70 files changed, 10587 insertions, 0 deletions

diff --git a/arch/v850/Kconfig b/arch/v850/Kconfig
new file mode 100644
index 000000000000..90cd4baa75ee
--- /dev/null
+++ b/arch/v850/Kconfig
@@ -0,0 +1,316 @@
+#############################################################################
+#
+# For a description of the syntax of this configuration file,
+# see Documentation/kbuild/kconfig-language.txt.
+#
+#############################################################################
+
+mainmenu "uClinux/v850 (w/o MMU) Kernel Configuration"
+
+config MMU
+        bool
+        default n
+config UID16
+        bool
+        default n
+config RWSEM_GENERIC_SPINLOCK
+        bool
+        default y
+config RWSEM_XCHGADD_ALGORITHM
+        bool
+        default n
+config GENERIC_CALIBRATE_DELAY
+        bool
+        default y
+
+# Turn off some random 386 crap that can affect device config
+config ISA
+        bool
+        default n
+config ISAPNP
+        bool
+        default n
+config EISA
+        bool
+        default n
+config MCA
+        bool
+        default n
+
+
+#############################################################################
+#### v850-specific config
+
+# Define the architecture
+config V850
+        bool
+        default y
+
+menu "Processor type and features"
+
+   choice
+          prompt "Platform"
+          default GDB
+      config V850E_SIM
+             bool "GDB"
+      config RTE_CB_MA1
+             bool "RTE-V850E/MA1-CB"
+      config RTE_CB_NB85E
+             bool "RTE-V850E/NB85E-CB"
+      config RTE_CB_ME2
+             bool "RTE-V850E/ME2-CB"
+      config V850E_AS85EP1
+             bool "AS85EP1"
+      config V850E2_SIM85E2C
+             bool "sim85e2c"
+      config V850E2_SIM85E2S
+             bool "sim85e2s"
+      config V850E2_FPGA85E2C
+             bool "NA85E2C-FPGA"
+      config V850E2_ANNA
+             bool "Anna"
+   endchoice
+
+   #### V850E processor-specific config
+
+   # All CPUs currently supported use the v850e architecture
+   config V850E
+          bool
+          default y
+
+   # The RTE-V850E/MA1-CB is the only type of V850E/MA1 platform we
+   # currently support
+   config V850E_MA1
+          bool
+          depends RTE_CB_MA1
+          default y
+   # Similarly for the RTE-V850E/NB85E-CB - V850E/TEG
+   config V850E_TEG
+          bool
+          depends RTE_CB_NB85E
+          default y
+   # ... and the RTE-V850E/ME2-CB - V850E/ME2
+   config V850E_ME2
+          bool
+          depends RTE_CB_ME2
+          default y
+
+
+   #### sim85e2-specific config
+
+   config V850E2_SIM85E2
+          bool
+          depends V850E2_SIM85E2C || V850E2_SIM85E2S
+          default y
+
+
+   #### V850E2 processor-specific config
+
+   # V850E2 processors
+   config V850E2
+          bool
+          depends V850E2_SIM85E2 || V850E2_FPGA85E2C || V850E2_ANNA
+          default y
+
+
+   #### RTE-CB platform-specific config
+
+   # Boards in the RTE-x-CB series
+   config RTE_CB
+          bool
+          depends RTE_CB_MA1 || RTE_CB_NB85E || RTE_CB_ME2
+          default y
+
+   config RTE_CB_MULTI
+          bool
+          # RTE_CB_NB85E can either have multi ROM support or not, but
+          # other platforms (currently only RTE_CB_MA1) require it.
+          prompt "Multi monitor ROM support" if RTE_CB_NB85E
+          depends RTE_CB_MA1 || RTE_CB_NB85E
+          default y
+
+   config RTE_CB_MULTI_DBTRAP
+          bool "Pass illegal insn trap / dbtrap to kernel"
+          depends RTE_CB_MULTI
+          default n
+
+   config RTE_CB_MA1_KSRAM
+          bool "Kernel in SRAM (limits size of kernel)"
+          depends RTE_CB_MA1 && RTE_CB_MULTI
+          default n
+
+   config RTE_MB_A_PCI
+          bool "Mother-A PCI support"
+          depends RTE_CB
+          default y
+
+   # The GBUS is used to talk to the RTE-MOTHER-A board
+   config RTE_GBUS_INT
+          bool
+          depends RTE_MB_A_PCI
+          default y
+
+   # The only PCI bus we support is on the RTE-MOTHER-A board
+   config PCI
+          bool
+          default RTE_MB_A_PCI
+
+   #### Some feature-specific configs
+
+   # Everything except for the GDB simulator uses the same interrupt controller
+   config V850E_INTC
+          bool
+          default !V850E_SIM
+
+   # Everything except for the various simulators uses the "Timer D" unit
+   config V850E_TIMER_D
+          bool
+          default !V850E_SIM && !V850E2_SIM85E2
+
+   # Cache control used on some v850e1 processors
+   config V850E_CACHE
+          bool
+          default V850E_TEG || V850E_ME2
+
+   # Cache control used on v850e2 processors; I think this should
+   # actually apply to more, but currently only the SIM85E2S uses it
+   config V850E2_CACHE
+          bool
+          default V850E2_SIM85E2S
+
+   config NO_CACHE
+          bool
+          default !V850E_CACHE && !V850E2_CACHE
+
+   #### Misc config
+
+   config ROM_KERNEL
+          bool "Kernel in ROM"
+          depends V850E2_ANNA || V850E_AS85EP1 || RTE_CB_ME2
+
+   # Some platforms pre-zero memory, in which case the kernel doesn't need to
+   config ZERO_BSS
+          bool
+          depends !V850E2_SIM85E2C
+          default y
+
+   # The crappy-ass zone allocator requires that the start of allocatable
+   # memory be aligned to the largest possible allocation.
+   config FORCE_MAX_ZONEORDER
+          int
+          default 8 if V850E2_SIM85E2C || V850E2_FPGA85E2C
+
+   config V850E_HIGHRES_TIMER
+          bool "High resolution timer support"
+          depends V850E_TIMER_D
+   config TIME_BOOTUP
+          bool "Time bootup"
+          depends V850E_HIGHRES_TIMER
+
+   config RESET_GUARD
+          bool "Reset Guard"
+
+   config LARGE_ALLOCS
+          bool "Allow allocating large blocks (> 1MB) of memory"
+          help
+             Allow the slab memory allocator to keep chains for very large
+             memory sizes - upto 32MB. You may need this if your system has
+             a lot of RAM, and you need to able to allocate very large
+             contiguous chunks. If unsure, say N.
+
+endmenu
+
+
+#############################################################################
+
+source init/Kconfig
+
+#############################################################################
+
+menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"
+
+#    config PCI
+#          bool "PCI support"
+#          help
+#            Support for PCI bus.
+
+source "drivers/pci/Kconfig"
+
+source "drivers/pcmcia/Kconfig"
+
+source "drivers/pci/hotplug/Kconfig"
+
+endmenu
+
+menu "Executable file formats"
+
+source "fs/Kconfig.binfmt"
+
+endmenu
+
+#############################################################################
+
+source "drivers/base/Kconfig"
+
+source drivers/mtd/Kconfig
+
+source drivers/parport/Kconfig
+
+#source drivers/pnp/Kconfig
+
+source drivers/block/Kconfig
+
+#############################################################################
+
+menu "Disk device support"
+
+source "drivers/ide/Kconfig"
+
+source "drivers/scsi/Kconfig"
+
+endmenu
+
+#############################################################################
+
+
+source "drivers/md/Kconfig"
+
+source "drivers/message/fusion/Kconfig"
+
+source "drivers/ieee1394/Kconfig"
+
+source "drivers/message/i2o/Kconfig"
+
+source "net/Kconfig"
+
+source "drivers/isdn/Kconfig"
+
+#source "drivers/telephony/Kconfig"
+
+#
+# input before char - char/joystick depends on it. As does USB.
+#
+source "drivers/input/Kconfig"
+
+source "drivers/char/Kconfig"
+
+#source drivers/misc/Config.in
+source "drivers/media/Kconfig"
+
+source "fs/Kconfig"
+
+source "drivers/video/Kconfig"
+
+source "sound/Kconfig"
+
+source "drivers/usb/Kconfig"
+
+source "arch/v850/Kconfig.debug"
+
+source "security/Kconfig"
+
+source "crypto/Kconfig"
+
+source "lib/Kconfig"
+
+#############################################################################
diff --git a/arch/v850/Kconfig.debug b/arch/v850/Kconfig.debug
new file mode 100644
index 000000000000..4acfb9cca1ca
--- /dev/null
+++ b/arch/v850/Kconfig.debug
@@ -0,0 +1,10 @@
+menu "Kernel hacking"
+
+source "lib/Kconfig.debug"
+
+config NO_KERNEL_MSG
+        bool "Suppress Kernel BUG Messages"
+        help
+          Do not output any debug BUG messages within the kernel.
+
+endmenu
diff --git a/arch/v850/Makefile b/arch/v850/Makefile
new file mode 100644
index 000000000000..6edaed4a310e
--- /dev/null
+++ b/arch/v850/Makefile
@@ -0,0 +1,63 @@
+#
+# arch/v850/Makefile
+#
+#  Copyright (C) 2001,02,03  NEC Corporation
+#  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies. Remember to do have actions
+# for "archclean" and "archdep" for cleaning up and making dependencies for
+# this architecture
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License.  See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+
+arch_dir = arch/v850
+
+CFLAGS += -mv850e
+# r16 is a fixed pointer to the current task
+CFLAGS += -ffixed-r16 -mno-prolog-function
+CFLAGS += -fno-builtin
+CFLAGS += -D__linux__ -DUTS_SYSNAME=\"uClinux\"
+
+# This prevents the linker from consolidating the .gnu.linkonce.this_module
+# section into .text (which the v850 default linker script for -r does for
+# some reason)
+LDFLAGS_MODULE += --unique=.gnu.linkonce.this_module
+
+OBJCOPY_FLAGS_BLOB := -I binary -O elf32-little -B v850e
+
+
+head-y := $(arch_dir)/kernel/head.o $(arch_dir)/kernel/init_task.o
+core-y += $(arch_dir)/kernel/
+libs-y += $(arch_dir)/lib/
+
+
+# Deal with the initial contents of the root device
+ifdef ROOT_FS_IMAGE
+core-y += root_fs_image.o
+
+# Because the kernel build-system erases all explicit .o build rules, we
+# have to use an intermediate target to fool it into building for us.
+# This results in it being built anew each time, but that's alright.
+root_fs_image.o: root_fs_image_force
+
+root_fs_image_force: $(ROOT_FS_IMAGE)
+        $(OBJCOPY) $(OBJCOPY_FLAGS_BLOB) --rename-section .data=.root,alloc,load,readonly,data,contents $< root_fs_image.o
+endif
+
+
+prepare: include/asm-$(ARCH)/asm-consts.h
+
+# Generate constants from C code for use by asm files
+arch/$(ARCH)/kernel/asm-consts.s: include/asm include/linux/version.h \
+                                   include/config/MARKER
+
+include/asm-$(ARCH)/asm-consts.h: arch/$(ARCH)/kernel/asm-consts.s
+        $(call filechk,gen-asm-offsets)
+
+CLEAN_FILES += include/asm-$(ARCH)/asm-consts.h \
+               arch/$(ARCH)/kernel/asm-consts.s \
+               root_fs_image.o
diff --git a/arch/v850/README b/arch/v850/README
new file mode 100644
index 000000000000..01b98e290d4a
--- /dev/null
+++ b/arch/v850/README
@@ -0,0 +1,32 @@
+This port to the NEC V850E processor supports the following platforms:
+
+   + The gdb v850e simulator (CONFIG_V850E_SIM).
+
+   + The Midas labs RTE-V850E/MA1-CB and RTE-V850E/NB85E-CB evaluation boards
+     (CONFIG_RTE_CB_MA1 and CONFIG_RTE_CB_NB85E).  This support has only been
+     tested when running with the Multi-debugger monitor ROM (for the Green
+     Hills Multi debugger).  The optional NEC Solution Gear RTE-MOTHER-A
+     motherboard is also supported, which allows PCI boards to be used
+     (CONFIG_RTE_MB_A_PCI).
+
+   + The Midas labs RTE-V850E/ME2-CB evaluation board (CONFIG_RTE_CB_ME2).
+     This has only been tested using a kernel downloaded via an ICE connection
+     using the Multi debugger.  Support for the RTE-MOTHER-A is present, but
+     hasn't been tested (unlike the other Midas labs cpu boards, the
+     RTE-V850E/ME2-CB includes an ethernet adaptor).
+
+   + The NEC AS85EP1 V850E evaluation chip/board (CONFIG_V850E_AS85EP1).
+
+   + The NEC `Anna' (board/chip) implementation of the V850E2 processor
+     (CONFIG_V850E2_ANNA).
+
+   + The sim85e2c and sim85e2s simulators, which are verilog simulations of
+     the V850E2 NA85E2C/NA85E2S cpu cores (CONFIG_V850E2_SIM85E2C and
+     CONFIG_V850E2_SIM85E2S).
+
+   + A FPGA implementation of the V850E2 NA85E2C cpu core
+     (CONFIG_V850E2_FPGA85E2C).
+
+Porting to anything with a V850E/MA1 or MA2 processor should be simple.
+See the file <asm-v850/machdep.h> and the files it includes for an example of
+how to add platform/chip-specific support.
diff --git a/arch/v850/kernel/Makefile b/arch/v850/kernel/Makefile
new file mode 100644
index 000000000000..3930482bddc4
--- /dev/null
+++ b/arch/v850/kernel/Makefile
@@ -0,0 +1,40 @@
+#
+# arch/v850/kernel/Makefile
+#
+#  Copyright (C) 2001,02,03  NEC Electronics Corporation
+#  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License.  See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+
+extra-y := head.o init_task.o vmlinux.lds
+
+obj-y += intv.o entry.o process.o syscalls.o time.o semaphore.o setup.o \
+         signal.o irq.o mach.o ptrace.o bug.o
+obj-$(CONFIG_MODULES)           += module.o v850_ksyms.o
+# chip-specific code
+obj-$(CONFIG_V850E_MA1)         += ma.o
+obj-$(CONFIG_V850E_ME2)         += me2.o
+obj-$(CONFIG_V850E_TEG)         += teg.o
+obj-$(CONFIG_V850E_AS85EP1)     += as85ep1.o
+obj-$(CONFIG_V850E2_ANNA)       += anna.o
+# platform-specific code
+obj-$(CONFIG_V850E_SIM)         += sim.o simcons.o
+obj-$(CONFIG_V850E2_SIM85E2)    += sim85e2.o memcons.o
+obj-$(CONFIG_V850E2_FPGA85E2C)  += fpga85e2c.o memcons.o
+obj-$(CONFIG_RTE_CB)            += rte_cb.o rte_cb_leds.o
+obj-$(CONFIG_RTE_CB_MA1)        += rte_ma1_cb.o
+obj-$(CONFIG_RTE_CB_ME2)        += rte_me2_cb.o
+obj-$(CONFIG_RTE_CB_NB85E)      += rte_nb85e_cb.o
+obj-$(CONFIG_RTE_CB_MULTI)      += rte_cb_multi.o
+obj-$(CONFIG_RTE_MB_A_PCI)      += rte_mb_a_pci.o
+obj-$(CONFIG_RTE_GBUS_INT)      += gbus_int.o
+# feature-specific code
+obj-$(CONFIG_V850E_INTC)        += v850e_intc.o
+obj-$(CONFIG_V850E_TIMER_D)     += v850e_timer_d.o v850e_utils.o
+obj-$(CONFIG_V850E_CACHE)       += v850e_cache.o
+obj-$(CONFIG_V850E2_CACHE)      += v850e2_cache.o
+obj-$(CONFIG_V850E_HIGHRES_TIMER) += highres_timer.o
+obj-$(CONFIG_PROC_FS)           += procfs.o
diff --git a/arch/v850/kernel/anna-rom.ld b/arch/v850/kernel/anna-rom.ld
new file mode 100644
index 000000000000..7c54e7e3f1b1
--- /dev/null
+++ b/arch/v850/kernel/anna-rom.ld
@@ -0,0 +1,16 @@
+/* Linker script for the Midas labs Anna V850E2 evaluation board
+   (CONFIG_V850E2_ANNA), with kernel in ROM (CONFIG_ROM_KERNEL).  */
+
+MEMORY {
+        /* 8MB of flash ROM.  */
+        ROM   : ORIGIN = 0,          LENGTH = 0x00800000
+
+        /* 1MB of static RAM.  This memory is mirrored 64 times.  */
+        SRAM  : ORIGIN = SRAM_ADDR,  LENGTH = SRAM_SIZE
+        /* 64MB of DRAM.  */
+        SDRAM : ORIGIN = SDRAM_ADDR, LENGTH = SDRAM_SIZE
+}
+
+SECTIONS {
+        ROMK_SECTIONS(ROM, SRAM)
+}
diff --git a/arch/v850/kernel/anna.c b/arch/v850/kernel/anna.c
new file mode 100644
index 000000000000..6aaeab5e8a40
--- /dev/null
+++ b/arch/v850/kernel/anna.c
@@ -0,0 +1,208 @@
+/*
+ * arch/v850/kernel/anna.c -- Anna V850E2 evaluation chip/board
+ *
+ *  Copyright (C) 2002,03  NEC Electronics Corporation
+ *  Copyright (C) 2002,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/bootmem.h>
+#include <linux/major.h>
+#include <linux/irq.h>
+
+#include <asm/machdep.h>
+#include <asm/atomic.h>
+#include <asm/page.h>
+#include <asm/v850e_timer_d.h>
+#include <asm/v850e_uart.h>
+
+#include "mach.h"
+
+
+/* SRAM and SDRAM are vaguely contiguous (with a big hole in between; see
+   mach_reserve_bootmem for details); use both as one big area.  */
+#define RAM_START       SRAM_ADDR
+#define RAM_END         (SDRAM_ADDR + SDRAM_SIZE)
+
+/* The bits of this port are connected to an 8-LED bar-graph.  */
+#define LEDS_PORT       0
+
+
+static void anna_led_tick (void);
+
+
+void __init mach_early_init (void)
+{
+        ANNA_ILBEN    = 0;
+
+        V850E2_CSC(0) = 0x402F;
+        V850E2_CSC(1) = 0x4000;
+        V850E2_BPC    = 0;
+        V850E2_BSC    = 0xAAAA;
+        V850E2_BEC    = 0;
+
+#if 0
+        V850E2_BHC    = 0xFFFF; /* icache all memory, dcache all */
+#else
+        V850E2_BHC    = 0;      /* cache no memory */
+#endif
+        V850E2_BCT(0) = 0xB088;
+        V850E2_BCT(1) = 0x0008;
+        V850E2_DWC(0) = 0x0027;
+        V850E2_DWC(1) = 0;
+        V850E2_BCC    = 0x0006;
+        V850E2_ASC    = 0;
+        V850E2_LBS    = 0x0089;
+        V850E2_SCR(3) = 0x21A9;
+        V850E2_RFS(3) = 0x8121;
+
+        v850e_intc_disable_irqs ();
+}
+
+void __init mach_setup (char **cmdline)
+{
+        ANNA_PORT_PM (LEDS_PORT) = 0;   /* Make all LED pins output pins.  */
+        mach_tick = anna_led_tick;
+}
+
+void __init mach_get_physical_ram (unsigned long *ram_start,
+                                   unsigned long *ram_len)
+{
+        *ram_start = RAM_START;
+        *ram_len = RAM_END - RAM_START;
+}
+
+void __init mach_reserve_bootmem ()
+{
+        /* The space between SRAM and SDRAM is filled with duplicate
+           images of SRAM.  Prevent the kernel from using them.  */
+        reserve_bootmem (SRAM_ADDR + SRAM_SIZE,
+                         SDRAM_ADDR - (SRAM_ADDR + SRAM_SIZE));
+}
+
+void mach_gettimeofday (struct timespec *tv)
+{
+        tv->tv_sec = 0;
+        tv->tv_nsec = 0;
+}
+
+void __init mach_sched_init (struct irqaction *timer_action)
+{
+        /* Start hardware timer.  */
+        v850e_timer_d_configure (0, HZ);
+        /* Install timer interrupt handler.  */
+        setup_irq (IRQ_INTCMD(0), timer_action);
+}
+
+static struct v850e_intc_irq_init irq_inits[] = {
+        { "IRQ", 0,             NUM_MACH_IRQS,  1, 7 },
+        { "PIN", IRQ_INTP(0),   IRQ_INTP_NUM,   1, 4 },
+        { "CCC", IRQ_INTCCC(0), IRQ_INTCCC_NUM, 1, 5 },
+        { "CMD", IRQ_INTCMD(0), IRQ_INTCMD_NUM, 1, 5 },
+        { "DMA", IRQ_INTDMA(0), IRQ_INTDMA_NUM, 1, 2 },
+        { "DMXER", IRQ_INTDMXER,1,              1, 2 },
+        { "SRE", IRQ_INTSRE(0), IRQ_INTSRE_NUM, 3, 3 },
+        { "SR",  IRQ_INTSR(0),  IRQ_INTSR_NUM,  3, 4 },
+        { "ST",  IRQ_INTST(0),  IRQ_INTST_NUM,  3, 5 },
+        { 0 }
+};
+#define NUM_IRQ_INITS ((sizeof irq_inits / sizeof irq_inits[0]) - 1)
+
+static struct hw_interrupt_type hw_itypes[NUM_IRQ_INITS];
+
+void __init mach_init_irqs (void)
+{
+        v850e_intc_init_irq_types (irq_inits, hw_itypes);
+}
+
+void machine_restart (char *__unused)
+{
+#ifdef CONFIG_RESET_GUARD
+        disable_reset_guard ();
+#endif
+        asm ("jmp r0"); /* Jump to the reset vector.  */
+}
+
+EXPORT_SYMBOL(machine_restart);
+
+void machine_halt (void)
+{
+#ifdef CONFIG_RESET_GUARD
+        disable_reset_guard ();
+#endif
+        local_irq_disable ();   /* Ignore all interrupts.  */
+        ANNA_PORT_IO(LEDS_PORT) = 0xAA; /* Note that we halted.  */
+        for (;;)
+                asm ("halt; nop; nop; nop; nop; nop");
+}
+
+EXPORT_SYMBOL(machine_halt);
+
+void machine_power_off (void)
+{
+        machine_halt ();
+}
+
+EXPORT_SYMBOL(machine_power_off);
+
+/* Called before configuring an on-chip UART.  */
+void anna_uart_pre_configure (unsigned chan, unsigned cflags, unsigned baud)
+{
+        /* The Anna connects some general-purpose I/O pins on the CPU to
+           the RTS/CTS lines of UART 1's serial connection.  I/O pins P07
+           and P37 are RTS and CTS respectively.  */
+        if (chan == 1) {
+                ANNA_PORT_PM(0) &= ~0x80; /* P07 in output mode */
+                ANNA_PORT_PM(3) |=  0x80; /* P37 in input mode */
+        }
+}
+
+/* Minimum and maximum bounds for the moving upper LED boundary in the
+   clock tick display.  We can't use the last bit because it's used for
+   UART0's CTS output.  */
+#define MIN_MAX_POS 0
+#define MAX_MAX_POS 6
+
+/* There are MAX_MAX_POS^2 - MIN_MAX_POS^2 cycles in the animation, so if
+   we pick 6 and 0 as above, we get 49 cycles, which is when divided into
+   the standard 100 value for HZ, gives us an almost 1s total time.  */
+#define TICKS_PER_FRAME \
+        (HZ / (MAX_MAX_POS * MAX_MAX_POS - MIN_MAX_POS * MIN_MAX_POS))
+
+static void anna_led_tick ()
+{
+        static unsigned counter = 0;
+        
+        if (++counter == TICKS_PER_FRAME) {
+                static int pos = 0, max_pos = MAX_MAX_POS, dir = 1;
+
+                if (dir > 0 && pos == max_pos) {
+                        dir = -1;
+                        if (max_pos == MIN_MAX_POS)
+                                max_pos = MAX_MAX_POS;
+                        else
+                                max_pos--;
+                } else {
+                        if (dir < 0 && pos == 0)
+                                dir = 1;
+
+                        if (pos + dir <= max_pos) {
+                                /* Each bit of port 0 has a LED. */
+                                clear_bit (pos, &ANNA_PORT_IO(LEDS_PORT));
+                                pos += dir;
+                                set_bit (pos, &ANNA_PORT_IO(LEDS_PORT));
+                        }
+                }
+
+                counter = 0;
+        }
+}
diff --git a/arch/v850/kernel/anna.ld b/arch/v850/kernel/anna.ld
new file mode 100644
index 000000000000..df7f80f2833d
--- /dev/null
+++ b/arch/v850/kernel/anna.ld
@@ -0,0 +1,20 @@
+/* Linker script for the Midas labs Anna V850E2 evaluation board
+   (CONFIG_V850E2_ANNA).  */
+
+MEMORY {
+        /* 256KB of internal memory (followed by one mirror).  */
+        iMEM0 : ORIGIN = 0,          LENGTH = 0x00040000
+        /* 256KB of internal memory (followed by one mirror).  */
+        iMEM1 : ORIGIN = 0x00040000, LENGTH = 0x00040000
+
+        /* 1MB of static RAM.  This memory is mirrored 64 times.  */
+        SRAM  : ORIGIN = SRAM_ADDR,  LENGTH = SRAM_SIZE
+        /* 64MB of DRAM.  */
+        SDRAM : ORIGIN = SDRAM_ADDR, LENGTH = SDRAM_SIZE
+}
+
+SECTIONS {
+        .intv : { INTV_CONTENTS } > iMEM0
+        .sram : { RAMK_KRAM_CONTENTS } > SRAM
+        .root : { ROOT_FS_CONTENTS } > SDRAM
+}
diff --git a/arch/v850/kernel/as85ep1-rom.ld b/arch/v850/kernel/as85ep1-rom.ld
new file mode 100644
index 000000000000..fe2a9a3ab525
--- /dev/null
+++ b/arch/v850/kernel/as85ep1-rom.ld
@@ -0,0 +1,21 @@
+/* Linker script for the NEC AS85EP1 V850E evaluation board
+   (CONFIG_V850E_AS85EP1), with kernel in ROM (CONFIG_ROM_KERNEL).  */
+
+MEMORY {
+        /* 4MB of flash ROM.  */
+        ROM   : ORIGIN = 0,          LENGTH = 0x00400000
+
+        /* 1MB of static RAM.  */
+        SRAM  : ORIGIN = SRAM_ADDR,  LENGTH = SRAM_SIZE
+
+        /* About 58MB of DRAM.  This can actually be at one of two
+           positions, determined by jumper JP3; we have to use the first
+           position because the second is partially out of processor
+           instruction addressing range (though in the second position
+           there's actually 64MB available).  */
+        SDRAM : ORIGIN = SDRAM_ADDR, LENGTH = SDRAM_SIZE
+}
+
+SECTIONS {
+        ROMK_SECTIONS(ROM, SRAM)
+}
diff --git a/arch/v850/kernel/as85ep1.c b/arch/v850/kernel/as85ep1.c
new file mode 100644
index 000000000000..4059b1df11b5
--- /dev/null
+++ b/arch/v850/kernel/as85ep1.c
@@ -0,0 +1,240 @@
+/*
+ * arch/v850/kernel/as85ep1.c -- AS85EP1 V850E evaluation chip/board
+ *
+ *  Copyright (C) 2002,03  NEC Electronics Corporation
+ *  Copyright (C) 2002,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/bootmem.h>
+#include <linux/major.h>
+#include <linux/irq.h>
+
+#include <asm/machdep.h>
+#include <asm/atomic.h>
+#include <asm/page.h>
+#include <asm/v850e_timer_d.h>
+#include <asm/v850e_uart.h>
+
+#include "mach.h"
+
+
+/* SRAM and SDRAM are vaguely contiguous (with a big hole in between; see
+   mach_reserve_bootmem for details); use both as one big area.  */
+#define RAM_START       SRAM_ADDR
+#define RAM_END         (SDRAM_ADDR + SDRAM_SIZE)
+
+/* The bits of this port are connected to an 8-LED bar-graph.  */
+#define LEDS_PORT       4
+
+
+static void as85ep1_led_tick (void);
+
+extern char _intv_copy_src_start, _intv_copy_src_end;
+extern char _intv_copy_dst_start;
+
+
+void __init mach_early_init (void)
+{
+#ifndef CONFIG_ROM_KERNEL
+        const u32 *src;
+        register u32 *dst asm ("ep");
+#endif
+
+        AS85EP1_CSC(0) = 0x0403;
+        AS85EP1_BCT(0) = 0xB8B8;
+        AS85EP1_DWC(0) = 0x0104;
+        AS85EP1_BCC    = 0x0012;
+        AS85EP1_ASC    = 0;
+        AS85EP1_LBS    = 0x00A9;
+
+        AS85EP1_PORT_PMC(6)  = 0xFF; /* valid A0,A1,A20-A25 */
+        AS85EP1_PORT_PMC(7)  = 0x0E; /* valid CS1-CS3       */
+        AS85EP1_PORT_PMC(9)  = 0xFF; /* valid D16-D23       */
+        AS85EP1_PORT_PMC(10) = 0xFF; /* valid D24-D31       */
+
+        AS85EP1_RFS(1) = 0x800c;
+        AS85EP1_RFS(3) = 0x800c;
+        AS85EP1_SCR(1) = 0x20A9;
+        AS85EP1_SCR(3) = 0x20A9;
+
+#ifndef CONFIG_ROM_KERNEL
+        /* The early chip we have is buggy, and writing the interrupt
+           vectors into low RAM may screw up, so for non-ROM kernels, we
+           only rely on the reset vector being downloaded, and copy the
+           rest of the interrupt vectors into place here.  The specific bug
+           is that writing address N, where (N & 0x10) == 0x10, will _also_
+           write to address (N - 0x10).  We avoid this (effectively) by
+           writing in 16-byte chunks backwards from the end.  */
+
+        AS85EP1_IRAMM = 0x3;    /* "write-mode" for the internal instruction memory */
+
+        src = (u32 *)(((u32)&_intv_copy_src_end - 1) & ~0xF);
+        dst = (u32 *)&_intv_copy_dst_start
+                + (src - (u32 *)&_intv_copy_src_start);
+        do {
+                u32 t0 = src[0], t1 = src[1], t2 = src[2], t3 = src[3];
+                dst[0] = t0; dst[1] = t1; dst[2] = t2; dst[3] = t3;
+                dst -= 4;
+                src -= 4;
+        } while (src > (u32 *)&_intv_copy_src_start);
+
+        AS85EP1_IRAMM = 0x0;    /* "read-mode" for the internal instruction memory */
+#endif /* !CONFIG_ROM_KERNEL */
+
+        v850e_intc_disable_irqs ();
+}
+
+void __init mach_setup (char **cmdline)
+{
+        AS85EP1_PORT_PMC (LEDS_PORT) = 0; /* Make the LEDs port an I/O port. */
+        AS85EP1_PORT_PM (LEDS_PORT) = 0; /* Make all the bits output pins.  */
+        mach_tick = as85ep1_led_tick;
+}
+
+void __init mach_get_physical_ram (unsigned long *ram_start,
+                                   unsigned long *ram_len)
+{
+        *ram_start = RAM_START;
+        *ram_len = RAM_END - RAM_START;
+}
+
+/* Convenience macros.  */
+#define SRAM_END        (SRAM_ADDR + SRAM_SIZE)
+#define SDRAM_END       (SDRAM_ADDR + SDRAM_SIZE)
+
+void __init mach_reserve_bootmem ()
+{
+        if (SDRAM_ADDR < RAM_END && SDRAM_ADDR > RAM_START)
+                /* We can't use the space between SRAM and SDRAM, so
+                   prevent the kernel from trying.  */
+                reserve_bootmem (SRAM_END, SDRAM_ADDR - SRAM_END);
+}
+
+void mach_gettimeofday (struct timespec *tv)
+{
+        tv->tv_sec = 0;
+        tv->tv_nsec = 0;
+}
+
+void __init mach_sched_init (struct irqaction *timer_action)
+{
+        /* Start hardware timer.  */
+        v850e_timer_d_configure (0, HZ);
+        /* Install timer interrupt handler.  */
+        setup_irq (IRQ_INTCMD(0), timer_action);
+}
+
+static struct v850e_intc_irq_init irq_inits[] = {
+        { "IRQ", 0,             NUM_MACH_IRQS,  1, 7 },
+        { "CCC", IRQ_INTCCC(0), IRQ_INTCCC_NUM, 1, 5 },
+        { "CMD", IRQ_INTCMD(0), IRQ_INTCMD_NUM, 1, 5 },
+        { "SRE", IRQ_INTSRE(0), IRQ_INTSRE_NUM, 3, 3 },
+        { "SR",  IRQ_INTSR(0),  IRQ_INTSR_NUM,  3, 4 },
+        { "ST",  IRQ_INTST(0),  IRQ_INTST_NUM,  3, 5 },
+        { 0 }
+};
+#define NUM_IRQ_INITS ((sizeof irq_inits / sizeof irq_inits[0]) - 1)
+
+static struct hw_interrupt_type hw_itypes[NUM_IRQ_INITS];
+
+void __init mach_init_irqs (void)
+{
+        v850e_intc_init_irq_types (irq_inits, hw_itypes);
+}
+
+void machine_restart (char *__unused)
+{
+#ifdef CONFIG_RESET_GUARD
+        disable_reset_guard ();
+#endif
+        asm ("jmp r0"); /* Jump to the reset vector.  */
+}
+
+EXPORT_SYMBOL(machine_restart);
+
+void machine_halt (void)
+{
+#ifdef CONFIG_RESET_GUARD
+        disable_reset_guard ();
+#endif
+        local_irq_disable ();   /* Ignore all interrupts.  */
+        AS85EP1_PORT_IO (LEDS_PORT) = 0xAA;     /* Note that we halted.  */
+        for (;;)
+                asm ("halt; nop; nop; nop; nop; nop");
+}
+
+EXPORT_SYMBOL(machine_halt);
+
+void machine_power_off (void)
+{
+        machine_halt ();
+}
+
+EXPORT_SYMBOL(machine_power_off);
+
+/* Called before configuring an on-chip UART.  */
+void as85ep1_uart_pre_configure (unsigned chan, unsigned cflags, unsigned baud)
+{
+        /* Make the shared uart/port pins be uart pins.  */
+        AS85EP1_PORT_PMC(3) |= (0x5 << chan);
+
+        /* The AS85EP1 connects some general-purpose I/O pins on the CPU to
+           the RTS/CTS lines of UART 1's serial connection.  I/O pins P53
+           and P54 are RTS and CTS respectively.  */
+        if (chan == 1) {
+                /* Put P53 & P54 in I/O port mode.  */
+                AS85EP1_PORT_PMC(5) &= ~0x18;
+                /* Make P53 an output, and P54 an input.  */
+                AS85EP1_PORT_PM(5) |=  0x10;
+        }
+}
+
+/* Minimum and maximum bounds for the moving upper LED boundary in the
+   clock tick display.  */
+#define MIN_MAX_POS 0
+#define MAX_MAX_POS 7
+
+/* There are MAX_MAX_POS^2 - MIN_MAX_POS^2 cycles in the animation, so if
+   we pick 6 and 0 as above, we get 49 cycles, which is when divided into
+   the standard 100 value for HZ, gives us an almost 1s total time.  */
+#define TICKS_PER_FRAME \
+        (HZ / (MAX_MAX_POS * MAX_MAX_POS - MIN_MAX_POS * MIN_MAX_POS))
+
+static void as85ep1_led_tick ()
+{
+        static unsigned counter = 0;
+        
+        if (++counter == TICKS_PER_FRAME) {
+                static int pos = 0, max_pos = MAX_MAX_POS, dir = 1;
+
+                if (dir > 0 && pos == max_pos) {
+                        dir = -1;
+                        if (max_pos == MIN_MAX_POS)
+                                max_pos = MAX_MAX_POS;
+                        else
+                                max_pos--;
+                } else {
+                        if (dir < 0 && pos == 0)
+                                dir = 1;
+
+                        if (pos + dir <= max_pos) {
+                                /* Each bit of port 0 has a LED. */
+                                set_bit (pos, &AS85EP1_PORT_IO(LEDS_PORT));
+                                pos += dir;
+                                clear_bit (pos, &AS85EP1_PORT_IO(LEDS_PORT));
+                        }
+                }
+
+                counter = 0;
+        }
+}
diff --git a/arch/v850/kernel/as85ep1.ld b/arch/v850/kernel/as85ep1.ld
new file mode 100644
index 000000000000..ef2c4399063e
--- /dev/null
+++ b/arch/v850/kernel/as85ep1.ld
@@ -0,0 +1,49 @@
+/* Linker script for the NEC AS85EP1 V850E evaluation board
+   (CONFIG_V850E_AS85EP1).  */
+
+MEMORY {
+        /* 1MB of internal instruction memory. */
+        iMEM0 : ORIGIN = 0,          LENGTH = 0x00100000
+
+        /* 1MB of static RAM.  */
+        SRAM  : ORIGIN = SRAM_ADDR,  LENGTH = SRAM_SIZE
+
+        /* About 58MB of DRAM.  This can actually be at one of two
+           positions, determined by jump JP3; we have to use the first
+           position because the second is partially out of processor
+           instruction addressing range (though in the second position
+           there's actually 64MB available).  */
+        SDRAM : ORIGIN = SDRAM_ADDR, LENGTH = SDRAM_SIZE
+}
+
+SECTIONS {
+        .resetv : {
+                __intv_start = . ;
+                        *(.intv.reset)  /* Reset vector */
+        } > iMEM0
+
+        .sram : {
+                RAMK_KRAM_CONTENTS
+
+                /* We stick most of the interrupt vectors here; they'll be
+                   copied into the proper location by the early init code (we
+                   can't put them directly in the right place because of
+                   hardware bugs).  The vectors shouldn't need to be
+                   relocated, so we don't have to use `> ...  AT> ...' to
+                   split the load/vm addresses (and we can't because of
+                   problems with the loader).  */
+                . = ALIGN (0x10) ;
+                __intv_copy_src_start = . ;
+                        *(.intv.common) /* Vectors common to all v850e proc. */
+                        *(.intv.mach)   /* Machine-specific int. vectors.  */
+                . = ALIGN (0x10) ;
+                __intv_copy_src_end = . ;
+        } > SRAM
+
+        /* Where we end up putting the vectors.  */
+        __intv_copy_dst_start = 0x10 ;
+        __intv_copy_dst_end = __intv_copy_dst_start + (__intv_copy_src_end - __intv_copy_src_start) ;
+        __intv_end = __intv_copy_dst_end ;
+
+        .root : { ROOT_FS_CONTENTS } > SDRAM
+}
diff --git a/arch/v850/kernel/asm-consts.c b/arch/v850/kernel/asm-consts.c
new file mode 100644
index 000000000000..24f291369070
--- /dev/null
+++ b/arch/v850/kernel/asm-consts.c
@@ -0,0 +1,61 @@
+/*
+ * This program is used to generate definitions needed by
+ * assembly language modules.
+ *
+ * We use the technique used in the OSF Mach kernel code:
+ * generate asm statements containing #defines,
+ * compile this file to assembler, and then extract the
+ * #defines from the assembly-language output.
+ */
+
+#include <linux/stddef.h>
+#include <linux/sched.h>
+#include <linux/kernel_stat.h>
+#include <linux/ptrace.h>
+#include <linux/hardirq.h>
+#include <asm/irq.h>
+#include <asm/errno.h>
+
+#define DEFINE(sym, val) \
+        asm volatile("\n->" #sym " %0 " #val : : "i" (val))
+
+#define BLANK() asm volatile("\n->" : : )
+
+int main (void)
+{
+        /* offsets into the task struct */
+        DEFINE (TASK_STATE, offsetof (struct task_struct, state));
+        DEFINE (TASK_FLAGS, offsetof (struct task_struct, flags));
+        DEFINE (TASK_PTRACE, offsetof (struct task_struct, ptrace));
+        DEFINE (TASK_BLOCKED, offsetof (struct task_struct, blocked));
+        DEFINE (TASK_THREAD, offsetof (struct task_struct, thread));
+        DEFINE (TASK_THREAD_INFO, offsetof (struct task_struct, thread_info));
+        DEFINE (TASK_MM, offsetof (struct task_struct, mm));
+        DEFINE (TASK_ACTIVE_MM, offsetof (struct task_struct, active_mm));
+        DEFINE (TASK_PID, offsetof (struct task_struct, pid));
+
+        /* offsets into the kernel_stat struct */
+        DEFINE (STAT_IRQ, offsetof (struct kernel_stat, irqs));
+
+
+        /* signal defines */
+        DEFINE (SIGSEGV, SIGSEGV);
+        DEFINE (SEGV_MAPERR, SEGV_MAPERR);
+        DEFINE (SIGTRAP, SIGTRAP);
+        DEFINE (SIGCHLD, SIGCHLD);
+        DEFINE (SIGILL, SIGILL);
+        DEFINE (TRAP_TRACE, TRAP_TRACE);
+
+        /* ptrace flag bits */
+        DEFINE (PT_PTRACED, PT_PTRACED);
+        DEFINE (PT_DTRACE, PT_DTRACE);
+
+        /* error values */
+        DEFINE (ENOSYS, ENOSYS);
+
+        /* clone flag bits */
+        DEFINE (CLONE_VFORK, CLONE_VFORK);
+        DEFINE (CLONE_VM, CLONE_VM);
+
+        return 0;
+}
diff --git a/arch/v850/kernel/bug.c b/arch/v850/kernel/bug.c
new file mode 100644
index 000000000000..c78cf750915a
--- /dev/null
+++ b/arch/v850/kernel/bug.c
@@ -0,0 +1,142 @@
+/*
+ * arch/v850/kernel/bug.c -- Bug reporting functions
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/kernel.h>
+#include <linux/reboot.h>
+#include <linux/sched.h>
+#include <linux/module.h>
+
+#include <asm/errno.h>
+#include <asm/ptrace.h>
+#include <asm/processor.h>
+#include <asm/current.h>
+
+/* We should use __builtin_return_address, but it doesn't work in gcc-2.90
+   (which is currently our standard compiler on the v850).  */
+#define ret_addr() ({ register u32 lp asm ("lp"); lp; })
+#define stack_addr() ({ register u32 sp asm ("sp"); sp; })
+
+void __bug ()
+{
+        printk (KERN_CRIT "kernel BUG at PC 0x%x (SP ~0x%x)!\n",
+                ret_addr() - 4, /* - 4 for `jarl' */
+                stack_addr());
+        machine_halt ();
+}
+
+int bad_trap (int trap_num, struct pt_regs *regs)
+{
+        printk (KERN_CRIT
+                "unimplemented trap %d called at 0x%08lx, pid %d!\n",
+                trap_num, regs->pc, current->pid);
+        return -ENOSYS;
+}
+
+#ifdef CONFIG_RESET_GUARD
+void unexpected_reset (unsigned long ret_addr, unsigned long kmode,
+                       struct task_struct *task, unsigned long sp)
+{
+        printk (KERN_CRIT
+                "unexpected reset in %s mode, pid %d"
+                " (ret_addr = 0x%lx, sp = 0x%lx)\n",
+                kmode ? "kernel" : "user",
+                task ? task->pid : -1,
+                ret_addr, sp);
+
+        machine_halt ();
+}
+#endif /* CONFIG_RESET_GUARD */
+
+
+
+struct spec_reg_name {
+        const char *name;
+        int gpr;
+};
+
+struct spec_reg_name spec_reg_names[] = {
+        { "sp", GPR_SP },
+        { "gp", GPR_GP },
+        { "tp", GPR_TP },
+        { "ep", GPR_EP },
+        { "lp", GPR_LP },
+        { 0, 0 }
+};
+
+void show_regs (struct pt_regs *regs)
+{
+        int gpr_base, gpr_offs;
+
+        printk ("     pc 0x%08lx    psw 0x%08lx                       kernel_mode %d\n",
+                regs->pc, regs->psw, regs->kernel_mode);
+        printk ("   ctpc 0x%08lx  ctpsw 0x%08lx   ctbp 0x%08lx\n",
+                regs->ctpc, regs->ctpsw, regs->ctbp);
+
+        for (gpr_base = 0; gpr_base < NUM_GPRS; gpr_base += 4) {
+                for (gpr_offs = 0; gpr_offs < 4; gpr_offs++) {
+                        int gpr = gpr_base + gpr_offs;
+                        long val = regs->gpr[gpr];
+                        struct spec_reg_name *srn;
+
+                        for (srn = spec_reg_names; srn->name; srn++)
+                                if (srn->gpr == gpr)
+                                        break;
+
+                        if (srn->name)
+                                printk ("%7s 0x%08lx", srn->name, val);
+                        else
+                                printk ("    r%02d 0x%08lx", gpr, val);
+                }
+
+                printk ("\n");
+        }
+}
+
+/*
+ * TASK is a pointer to the task whose backtrace we want to see (or NULL
+ * for current task), SP is the stack pointer of the first frame that
+ * should be shown in the back trace (or NULL if the entire call-chain of
+ * the task should be shown).
+ */
+void show_stack (struct task_struct *task, unsigned long *sp)
+{
+        unsigned long addr, end;
+
+        if (sp)
+                addr = (unsigned long)sp;
+        else if (task)
+                addr = task_sp (task);
+        else
+                addr = stack_addr ();
+
+        addr = addr & ~3;
+        end = (addr + THREAD_SIZE - 1) & THREAD_MASK;
+
+        while (addr < end) {
+                printk ("%8lX: ", addr);
+                while (addr < end) {
+                        printk (" %8lX", *(unsigned long *)addr);
+                        addr += sizeof (unsigned long);
+                        if (! (addr & 0xF))
+                                break;
+                }
+                printk ("\n");
+        }
+}
+
+void dump_stack ()
+{
+        show_stack (0, 0);
+}
+
+EXPORT_SYMBOL(dump_stack);
diff --git a/arch/v850/kernel/entry.S b/arch/v850/kernel/entry.S
new file mode 100644
index 000000000000..895e27b1d839
--- /dev/null
+++ b/arch/v850/kernel/entry.S
@@ -0,0 +1,1121 @@
+/*
+ * arch/v850/kernel/entry.S -- Low-level system-call handling, trap handlers,
+ *      and context-switching
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/sys.h>
+
+#include <asm/entry.h>
+#include <asm/current.h>
+#include <asm/thread_info.h>
+#include <asm/clinkage.h>
+#include <asm/processor.h>
+#include <asm/irq.h>
+#include <asm/errno.h>
+
+#include <asm/asm-consts.h>
+
+
+/* Make a slightly more convenient alias for C_SYMBOL_NAME.  */
+#define CSYM    C_SYMBOL_NAME
+
+
+/* The offset of the struct pt_regs in a state-save-frame on the stack.  */
+#define PTO     STATE_SAVE_PT_OFFSET
+
+
+/* Save argument registers to the state-save-frame pointed to by EP.  */
+#define SAVE_ARG_REGS                                                         \
+        sst.w   r6, PTO+PT_GPR(6)[ep];                                        \
+        sst.w   r7, PTO+PT_GPR(7)[ep];                                        \
+        sst.w   r8, PTO+PT_GPR(8)[ep];                                        \
+        sst.w   r9, PTO+PT_GPR(9)[ep]
+/* Restore argument registers from the state-save-frame pointed to by EP.  */
+#define RESTORE_ARG_REGS                                                      \
+        sld.w   PTO+PT_GPR(6)[ep], r6;                                        \
+        sld.w   PTO+PT_GPR(7)[ep], r7;                                        \
+        sld.w   PTO+PT_GPR(8)[ep], r8;                                        \
+        sld.w   PTO+PT_GPR(9)[ep], r9
+
+/* Save value return registers to the state-save-frame pointed to by EP.  */
+#define SAVE_RVAL_REGS                                                        \
+        sst.w   r10, PTO+PT_GPR(10)[ep];                                      \
+        sst.w   r11, PTO+PT_GPR(11)[ep]
+/* Restore value return registers from the state-save-frame pointed to by EP.  */
+#define RESTORE_RVAL_REGS                                                     \
+        sld.w   PTO+PT_GPR(10)[ep], r10;                                      \
+        sld.w   PTO+PT_GPR(11)[ep], r11
+
+
+#define SAVE_CALL_CLOBBERED_REGS_BEFORE_ARGS                                  \
+        sst.w   r1, PTO+PT_GPR(1)[ep];                                        \
+        sst.w   r5, PTO+PT_GPR(5)[ep]
+#define SAVE_CALL_CLOBBERED_REGS_AFTER_RVAL                                   \
+        sst.w   r12, PTO+PT_GPR(12)[ep];                                      \
+        sst.w   r13, PTO+PT_GPR(13)[ep];                                      \
+        sst.w   r14, PTO+PT_GPR(14)[ep];                                      \
+        sst.w   r15, PTO+PT_GPR(15)[ep];                                      \
+        sst.w   r16, PTO+PT_GPR(16)[ep];                                      \
+        sst.w   r17, PTO+PT_GPR(17)[ep];                                      \
+        sst.w   r18, PTO+PT_GPR(18)[ep];                                      \
+        sst.w   r19, PTO+PT_GPR(19)[ep]
+#define RESTORE_CALL_CLOBBERED_REGS_BEFORE_ARGS                               \
+        sld.w   PTO+PT_GPR(1)[ep], r1;                                        \
+        sld.w   PTO+PT_GPR(5)[ep], r5
+#define RESTORE_CALL_CLOBBERED_REGS_AFTER_RVAL                                \
+        sld.w   PTO+PT_GPR(12)[ep], r12;                                      \
+        sld.w   PTO+PT_GPR(13)[ep], r13;                                      \
+        sld.w   PTO+PT_GPR(14)[ep], r14;                                      \
+        sld.w   PTO+PT_GPR(15)[ep], r15;                                      \
+        sld.w   PTO+PT_GPR(16)[ep], r16;                                      \
+        sld.w   PTO+PT_GPR(17)[ep], r17;                                      \
+        sld.w   PTO+PT_GPR(18)[ep], r18;                                      \
+        sld.w   PTO+PT_GPR(19)[ep], r19
+
+/* Save `call clobbered' registers to the state-save-frame pointed to by EP.  */
+#define SAVE_CALL_CLOBBERED_REGS                                              \
+        SAVE_CALL_CLOBBERED_REGS_BEFORE_ARGS;                                 \
+        SAVE_ARG_REGS;                                                        \
+        SAVE_RVAL_REGS;                                                       \
+        SAVE_CALL_CLOBBERED_REGS_AFTER_RVAL
+/* Restore `call clobbered' registers from the state-save-frame pointed to
+   by EP.  */
+#define RESTORE_CALL_CLOBBERED_REGS                                           \
+        RESTORE_CALL_CLOBBERED_REGS_BEFORE_ARGS;                              \
+        RESTORE_ARG_REGS;                                                     \
+        RESTORE_RVAL_REGS;                                                    \
+        RESTORE_CALL_CLOBBERED_REGS_AFTER_RVAL
+
+/* Save `call clobbered' registers except for the return-value registers
+   to the state-save-frame pointed to by EP.  */
+#define SAVE_CALL_CLOBBERED_REGS_NO_RVAL                                      \
+        SAVE_CALL_CLOBBERED_REGS_BEFORE_ARGS;                                 \
+        SAVE_ARG_REGS;                                                        \
+        SAVE_CALL_CLOBBERED_REGS_AFTER_RVAL
+/* Restore `call clobbered' registers except for the return-value registers
+   from the state-save-frame pointed to by EP.  */
+#define RESTORE_CALL_CLOBBERED_REGS_NO_RVAL                                   \
+        RESTORE_CALL_CLOBBERED_REGS_BEFORE_ARGS;                              \
+        RESTORE_ARG_REGS;                                                     \
+        RESTORE_CALL_CLOBBERED_REGS_AFTER_RVAL
+
+/* Save `call saved' registers to the state-save-frame pointed to by EP.  */
+#define SAVE_CALL_SAVED_REGS                                                  \
+        sst.w   r2, PTO+PT_GPR(2)[ep];                                        \
+        sst.w   r20, PTO+PT_GPR(20)[ep];                                      \
+        sst.w   r21, PTO+PT_GPR(21)[ep];                                      \
+        sst.w   r22, PTO+PT_GPR(22)[ep];                                      \
+        sst.w   r23, PTO+PT_GPR(23)[ep];                                      \
+        sst.w   r24, PTO+PT_GPR(24)[ep];                                      \
+        sst.w   r25, PTO+PT_GPR(25)[ep];                                      \
+        sst.w   r26, PTO+PT_GPR(26)[ep];                                      \
+        sst.w   r27, PTO+PT_GPR(27)[ep];                                      \
+        sst.w   r28, PTO+PT_GPR(28)[ep];                                      \
+        sst.w   r29, PTO+PT_GPR(29)[ep]
+/* Restore `call saved' registers from the state-save-frame pointed to by EP.  */
+#define RESTORE_CALL_SAVED_REGS                                               \
+        sld.w   PTO+PT_GPR(2)[ep], r2;                                        \
+        sld.w   PTO+PT_GPR(20)[ep], r20;                                      \
+        sld.w   PTO+PT_GPR(21)[ep], r21;                                      \
+        sld.w   PTO+PT_GPR(22)[ep], r22;                                      \
+        sld.w   PTO+PT_GPR(23)[ep], r23;                                      \
+        sld.w   PTO+PT_GPR(24)[ep], r24;                                      \
+        sld.w   PTO+PT_GPR(25)[ep], r25;                                      \
+        sld.w   PTO+PT_GPR(26)[ep], r26;                                      \
+        sld.w   PTO+PT_GPR(27)[ep], r27;                                      \
+        sld.w   PTO+PT_GPR(28)[ep], r28;                                      \
+        sld.w   PTO+PT_GPR(29)[ep], r29
+
+
+/* Save the PC stored in the special register SAVEREG to the state-save-frame
+   pointed to by EP.  r19 is clobbered.  */
+#define SAVE_PC(savereg)                                                      \
+        stsr    SR_ ## savereg, r19;                                          \
+        sst.w   r19, PTO+PT_PC[ep]
+/* Restore the PC from the state-save-frame pointed to by EP, to the special
+   register SAVEREG.  LP is clobbered (it is used as a scratch register
+   because the POP_STATE macro restores it, and this macro is usually used
+   inside POP_STATE).  */
+#define RESTORE_PC(savereg)                                                   \
+        sld.w   PTO+PT_PC[ep], lp;                                            \
+        ldsr    lp, SR_ ## savereg
+/* Save the PSW register stored in the special register SAVREG to the
+   state-save-frame pointed to by EP.  r19 is clobbered.  */
+#define SAVE_PSW(savereg)                                                     \
+        stsr    SR_ ## savereg, r19;                                          \
+        sst.w   r19, PTO+PT_PSW[ep]
+/* Restore the PSW register from the state-save-frame pointed to by EP, to
+   the special register SAVEREG.  LP is clobbered (it is used as a scratch
+   register because the POP_STATE macro restores it, and this macro is
+   usually used inside POP_STATE).  */
+#define RESTORE_PSW(savereg)                                                  \
+        sld.w   PTO+PT_PSW[ep], lp;                                           \
+        ldsr    lp, SR_ ## savereg
+
+/* Save CTPC/CTPSW/CTBP registers to the state-save-frame pointed to by REG.
+   r19 is clobbered.  */
+#define SAVE_CT_REGS                                                          \
+        stsr    SR_CTPC, r19;                                                 \
+        sst.w   r19, PTO+PT_CTPC[ep];                                         \
+        stsr    SR_CTPSW, r19;                                                \
+        sst.w   r19, PTO+PT_CTPSW[ep];                                        \
+        stsr    SR_CTBP, r19;                                                 \
+        sst.w   r19, PTO+PT_CTBP[ep]
+/* Restore CTPC/CTPSW/CTBP registers from the state-save-frame pointed to by EP.
+   LP is clobbered (it is used as a scratch register because the POP_STATE
+   macro restores it, and this macro is usually used inside POP_STATE).  */
+#define RESTORE_CT_REGS                                                       \
+        sld.w   PTO+PT_CTPC[ep], lp;                                          \
+        ldsr    lp, SR_CTPC;                                                  \
+        sld.w   PTO+PT_CTPSW[ep], lp;                                         \
+        ldsr    lp, SR_CTPSW;                                                 \
+        sld.w   PTO+PT_CTBP[ep], lp;                                          \
+        ldsr    lp, SR_CTBP
+
+
+/* Push register state, except for the stack pointer, on the stack in the
+   form of a state-save-frame (plus some extra padding), in preparation for
+   a system call.  This macro makes sure that the EP, GP, and LP
+   registers are saved, and TYPE identifies the set of extra registers to
+   be saved as well.  Also copies (the new value of) SP to EP.  */
+#define PUSH_STATE(type)                                                      \
+        addi    -STATE_SAVE_SIZE, sp, sp; /* Make room on the stack.  */      \
+        st.w    ep, PTO+PT_GPR(GPR_EP)[sp];                                   \
+        mov     sp, ep;                                                       \
+        sst.w   gp, PTO+PT_GPR(GPR_GP)[ep];                                   \
+        sst.w   lp, PTO+PT_GPR(GPR_LP)[ep];                                   \
+        type ## _STATE_SAVER
+/* Pop a register state pushed by PUSH_STATE, except for the stack pointer,
+   from the the stack.  */
+#define POP_STATE(type)                                                       \
+        mov     sp, ep;                                                       \
+        type ## _STATE_RESTORER;                                              \
+        sld.w   PTO+PT_GPR(GPR_GP)[ep], gp;                                   \
+        sld.w   PTO+PT_GPR(GPR_LP)[ep], lp;                                   \
+        sld.w   PTO+PT_GPR(GPR_EP)[ep], ep;                                   \
+        addi    STATE_SAVE_SIZE, sp, sp /* Clean up our stack space.  */
+
+
+/* Switch to the kernel stack if necessary, and push register state on the
+   stack in the form of a state-save-frame.  Also load the current task
+   pointer if switching from user mode.  The stack-pointer (r3) should have
+   already been saved to the memory location SP_SAVE_LOC (the reason for
+   this is that the interrupt vectors may be beyond a 22-bit signed offset
+   jump from the actual interrupt handler, and this allows them to save the
+   stack-pointer and use that register to do an indirect jump).  This macro
+   makes sure that `special' registers, system registers, and the stack
+   pointer are saved; TYPE identifies the set of extra registers to be
+   saved as well.  SYSCALL_NUM is the register in which the system-call
+   number this state is for is stored (r0 if this isn't a system call).
+   Interrupts should already be disabled when calling this.  */
+#define SAVE_STATE(type, syscall_num, sp_save_loc)                            \
+        tst1    0, KM;                  /* See if already in kernel mode.  */ \
+        bz      1f;                                                           \
+        ld.w    sp_save_loc, sp;        /* ... yes, use saved SP.  */         \
+        br      2f;                                                           \
+1:      ld.w    KSP, sp;                /* ... no, switch to kernel stack. */ \
+2:      PUSH_STATE(type);                                                     \
+        ld.b    KM, r19;                /* Remember old kernel-mode.  */      \
+        sst.w   r19, PTO+PT_KERNEL_MODE[ep];                                  \
+        ld.w    sp_save_loc, r19;       /* Remember old SP.  */               \
+        sst.w   r19, PTO+PT_GPR(GPR_SP)[ep];                                  \
+        mov     1, r19;                 /* Now definitely in kernel-mode. */  \
+        st.b    r19, KM;                                                      \
+        GET_CURRENT_TASK(CURRENT_TASK); /* Fetch the current task pointer. */ \
+        /* Save away the syscall number.  */                                  \
+        sst.w   syscall_num, PTO+PT_CUR_SYSCALL[ep]
+
+
+/* Save register state not normally saved by PUSH_STATE for TYPE, to the
+   state-save-frame on the stack; also copies SP to EP.  r19 may be trashed. */
+#define SAVE_EXTRA_STATE(type)                                                \
+        mov     sp, ep;                                                       \
+        type ## _EXTRA_STATE_SAVER
+/* Restore register state not normally restored by POP_STATE for TYPE,
+   from the state-save-frame on the stack; also copies SP to EP.
+   r19 may be trashed.  */
+#define RESTORE_EXTRA_STATE(type)                                             \
+        mov     sp, ep;                                                       \
+        type ## _EXTRA_STATE_RESTORER
+
+/* Save any call-clobbered registers not normally saved by PUSH_STATE for
+   TYPE, to the state-save-frame on the stack.
+   EP may be trashed, but is not guaranteed to contain a copy of SP
+   (unlike after most SAVE_... macros).  r19 may be trashed.  */
+#define SAVE_EXTRA_STATE_FOR_SCHEDULE(type)                                   \
+        type ## _SCHEDULE_EXTRA_STATE_SAVER
+/* Restore any call-clobbered registers not normally restored by
+   POP_STATE for TYPE, to the state-save-frame on the stack.
+   EP may be trashed, but is not guaranteed to contain a copy of SP
+   (unlike after most RESTORE_... macros).  r19 may be trashed.  */
+#define RESTORE_EXTRA_STATE_FOR_SCHEDULE(type)                                \
+        type ## _SCHEDULE_EXTRA_STATE_RESTORER
+
+
+/* These are extra_state_saver/restorer values for a user trap.  Note
+   that we save the argument registers so that restarted syscalls will
+   function properly (otherwise it wouldn't be necessary), and we must
+   _not_ restore the return-value registers (so that traps can return a
+   value!), but call-clobbered registers are not saved at all, as the
+   caller of the syscall function should have saved them.  */
+
+#define TRAP_RET reti
+/* Traps don't save call-clobbered registers (but do still save arg regs).
+   We preserve PSw to keep long-term state, namely interrupt status (for traps
+   from kernel-mode), and the single-step flag (for user traps).  */
+#define TRAP_STATE_SAVER                                                      \
+        SAVE_ARG_REGS;                                                        \
+        SAVE_PC(EIPC);                                                        \
+        SAVE_PSW(EIPSW)
+/* When traps return, they just leave call-clobbered registers (except for arg
+   regs) with whatever value they have from the kernel.  Traps don't preserve
+   the PSW, but we zero EIPSW to ensure it doesn't contain anything dangerous
+   (in particular, the single-step flag).  */
+#define TRAP_STATE_RESTORER                                                   \
+        RESTORE_ARG_REGS;                                                     \
+        RESTORE_PC(EIPC);                                                     \
+        RESTORE_PSW(EIPSW)
+/* Save registers not normally saved by traps.  We need to save r12, even
+   though it's nominally call-clobbered, because it's used when restarting
+   a system call (the signal-handling path uses SAVE_EXTRA_STATE, and
+   expects r12 to be restored when the trap returns).  */
+#define TRAP_EXTRA_STATE_SAVER                                                \
+        SAVE_RVAL_REGS;                                                       \
+        sst.w   r12, PTO+PT_GPR(12)[ep];                                      \
+        SAVE_CALL_SAVED_REGS;                                                 \
+        SAVE_CT_REGS
+#define TRAP_EXTRA_STATE_RESTORER                                             \
+        RESTORE_RVAL_REGS;                                                    \
+        sld.w   PTO+PT_GPR(12)[ep], r12;                                      \
+        RESTORE_CALL_SAVED_REGS;                                              \
+        RESTORE_CT_REGS
+/* Save registers prior to calling scheduler (just before trap returns).
+   We have to save the return-value registers to preserve the trap's return
+   value.  Note that ..._SCHEDULE_EXTRA_STATE_SAVER, unlike most ..._SAVER
+   macros, is required to setup EP itself if EP is needed (this is because
+   in many cases, the macro is empty).  */
+#define TRAP_SCHEDULE_EXTRA_STATE_SAVER                                       \
+        mov sp, ep;                                                           \
+        SAVE_RVAL_REGS
+/* Note that ..._SCHEDULE_EXTRA_STATE_RESTORER, unlike most ..._RESTORER
+   macros, is required to setup EP itself if EP is needed (this is because
+   in many cases, the macro is empty).  */
+#define TRAP_SCHEDULE_EXTRA_STATE_RESTORER                                    \
+        mov sp, ep;                                                           \
+        RESTORE_RVAL_REGS
+
+/* Register saving/restoring for maskable interrupts.  */
+#define IRQ_RET reti
+#define IRQ_STATE_SAVER                                                       \
+        SAVE_CALL_CLOBBERED_REGS;                                             \
+        SAVE_PC(EIPC);                                                        \
+        SAVE_PSW(EIPSW)
+#define IRQ_STATE_RESTORER                                                    \
+        RESTORE_CALL_CLOBBERED_REGS;                                          \
+        RESTORE_PC(EIPC);                                                     \
+        RESTORE_PSW(EIPSW)
+#define IRQ_EXTRA_STATE_SAVER                                                 \
+        SAVE_CALL_SAVED_REGS;                                                 \
+        SAVE_CT_REGS
+#define IRQ_EXTRA_STATE_RESTORER                                              \
+        RESTORE_CALL_SAVED_REGS;                                              \
+        RESTORE_CT_REGS
+#define IRQ_SCHEDULE_EXTRA_STATE_SAVER       /* nothing */
+#define IRQ_SCHEDULE_EXTRA_STATE_RESTORER    /* nothing */
+
+/* Register saving/restoring for non-maskable interrupts.  */
+#define NMI_RET reti
+#define NMI_STATE_SAVER                                                       \
+        SAVE_CALL_CLOBBERED_REGS;                                             \
+        SAVE_PC(FEPC);                                                        \
+        SAVE_PSW(FEPSW);
+#define NMI_STATE_RESTORER                                                    \
+        RESTORE_CALL_CLOBBERED_REGS;                                          \
+        RESTORE_PC(FEPC);                                                     \
+        RESTORE_PSW(FEPSW);
+#define NMI_EXTRA_STATE_SAVER                                                 \
+        SAVE_CALL_SAVED_REGS;                                                 \
+        SAVE_CT_REGS
+#define NMI_EXTRA_STATE_RESTORER                                              \
+        RESTORE_CALL_SAVED_REGS;                                              \
+        RESTORE_CT_REGS
+#define NMI_SCHEDULE_EXTRA_STATE_SAVER       /* nothing */
+#define NMI_SCHEDULE_EXTRA_STATE_RESTORER    /* nothing */
+
+/* Register saving/restoring for debug traps.  */
+#define DBTRAP_RET .long 0x014607E0 /* `dbret', but gas doesn't support it. */
+#define DBTRAP_STATE_SAVER                                                    \
+        SAVE_CALL_CLOBBERED_REGS;                                             \
+        SAVE_PC(DBPC);                                                        \
+        SAVE_PSW(DBPSW)
+#define DBTRAP_STATE_RESTORER                                                 \
+        RESTORE_CALL_CLOBBERED_REGS;                                          \
+        RESTORE_PC(DBPC);                                                     \
+        RESTORE_PSW(DBPSW)
+#define DBTRAP_EXTRA_STATE_SAVER                                              \
+        SAVE_CALL_SAVED_REGS;                                                 \
+        SAVE_CT_REGS
+#define DBTRAP_EXTRA_STATE_RESTORER                                           \
+        RESTORE_CALL_SAVED_REGS;                                              \
+        RESTORE_CT_REGS
+#define DBTRAP_SCHEDULE_EXTRA_STATE_SAVER       /* nothing */
+#define DBTRAP_SCHEDULE_EXTRA_STATE_RESTORER    /* nothing */
+
+/* Register saving/restoring for a context switch.  We don't need to save
+   too many registers, because context-switching looks like a function call
+   (via the function `switch_thread'), so callers will save any
+   call-clobbered registers themselves.  We do need to save the CT regs, as
+   they're normally not saved during kernel entry (the kernel doesn't use
+   them).  We save PSW so that interrupt-status state will correctly follow
+   each thread (mostly NMI vs. normal-IRQ/trap), though for the most part
+   it doesn't matter since threads are always in almost exactly the same
+   processor state during a context switch.  The stack pointer and return
+   value are handled by switch_thread itself.  */
+#define SWITCH_STATE_SAVER                                                    \
+        SAVE_CALL_SAVED_REGS;                                                 \
+        SAVE_PSW(PSW);                                                        \
+        SAVE_CT_REGS
+#define SWITCH_STATE_RESTORER                                                 \
+        RESTORE_CALL_SAVED_REGS;                                              \
+        RESTORE_PSW(PSW);                                                     \
+        RESTORE_CT_REGS
+
+
+/* Restore register state from the state-save-frame on the stack, switch back
+   to the user stack if necessary, and return from the trap/interrupt.
+   EXTRA_STATE_RESTORER is a sequence of assembly language statements to
+   restore anything not restored by this macro.  Only registers not saved by
+   the C compiler are restored (that is, R3(sp), R4(gp), R31(lp), and
+   anything restored by EXTRA_STATE_RESTORER).  */
+#define RETURN(type)                                                          \
+        ld.b    PTO+PT_KERNEL_MODE[sp], r19;                                  \
+        di;                             /* Disable interrupts */              \
+        cmp     r19, r0;                /* See if returning to kernel mode, */\
+        bne     2f;                     /* ... if so, skip resched &c.  */    \
+                                                                              \
+        /* We're returning to user mode, so check for various conditions that \
+           trigger rescheduling. */                                           \
+        GET_CURRENT_THREAD(r18);                                              \
+        ld.w    TI_FLAGS[r18], r19;                                           \
+        andi    _TIF_NEED_RESCHED, r19, r0;                                   \
+        bnz     3f;                     /* Call the scheduler.  */            \
+5:      andi    _TIF_SIGPENDING, r19, r18;                                    \
+        ld.w    TASK_PTRACE[CURRENT_TASK], r19; /* ptrace flags */            \
+        or      r18, r19;               /* see if either is non-zero */       \
+        bnz     4f;                     /* if so, handle them */              \
+                                                                              \
+/* Return to user state.  */                                                  \
+1:      st.b    r0, KM;                 /* Now officially in user state. */   \
+                                                                              \
+/* Final return.  The stack-pointer fiddling is not needed when returning     \
+   to kernel-mode, but they don't hurt, and this way we can share the         \
+   (sometimes rather lengthy) POP_STATE macro.  */                            \
+2:      POP_STATE(type);                                                      \
+        st.w    sp, KSP;                /* Save the kernel stack pointer. */  \
+        ld.w    PT_GPR(GPR_SP)-PT_SIZE[sp], sp; /* Restore stack pointer. */  \
+        type ## _RET;                   /* Return from the trap/interrupt. */ \
+                                                                              \
+/* Call the scheduler before returning from a syscall/trap. */                \
+3:      SAVE_EXTRA_STATE_FOR_SCHEDULE(type); /* Prepare to call scheduler. */ \
+        jarl    call_scheduler, lp;     /* Call scheduler */                  \
+        di;                             /* The scheduler enables interrupts */\
+        RESTORE_EXTRA_STATE_FOR_SCHEDULE(type);                               \
+        GET_CURRENT_THREAD(r18);                                              \
+        ld.w    TI_FLAGS[r18], r19;                                           \
+        br      5b;                     /* Continue with return path. */      \
+                                                                              \
+/* Handle a signal or ptraced process return.                                 \
+   r18 should be non-zero if there are pending signals.  */                   \
+4:      /* Not all registers are saved by the normal trap/interrupt entry     \
+           points (for instance, call-saved registers (because the normal     \
+           C-compiler calling sequence in the kernel makes sure they're       \
+           preserved), and call-clobbered registers in the case of            \
+           traps), but signal handlers may want to examine or change the      \
+           complete register state.  Here we save anything not saved by       \
+           the normal entry sequence, so that it may be safely restored       \
+           (in a possibly modified form) after do_signal returns.  */         \
+        SAVE_EXTRA_STATE(type);         /* Save state not saved by entry. */  \
+        jarl    handle_signal_or_ptrace_return, lp;                           \
+        RESTORE_EXTRA_STATE(type);      /* Restore extra regs.  */            \
+        br      1b
+
+
+/* Jump to the appropriate function for the system call number in r12
+   (r12 is not preserved), or return an error if r12 is not valid.  The
+   LP register should point to the location where the called function
+   should return.  [note that MAKE_SYS_CALL uses label 1]  */
+#define MAKE_SYS_CALL                                                         \
+        /* Figure out which function to use for this system call.  */         \
+        shl     2, r12;                                                       \
+        /* See if the system call number is valid.  */                        \
+        addi    lo(CSYM(sys_call_table) - sys_call_table_end), r12, r0;       \
+        bnh     1f;                                                           \
+        mov     hilo(CSYM(sys_call_table)), r19;                              \
+        add     r19, r12;                                                     \
+        ld.w    0[r12], r12;                                                  \
+        /* Make the system call.  */                                          \
+        jmp     [r12];                                                        \
+        /* The syscall number is invalid, return an error.  */                \
+1:      addi    -ENOSYS, r0, r10;                                             \
+        jmp     [lp]
+
+
+        .text
+
+/*
+ * User trap.
+ *
+ * Trap 0 system calls are also handled here.
+ *
+ * The stack-pointer (r3) should have already been saved to the memory
+ * location ENTRY_SP (the reason for this is that the interrupt vectors may be
+ * beyond a 22-bit signed offset jump from the actual interrupt handler, and
+ * this allows them to save the stack-pointer and use that register to do an
+ * indirect jump).
+ *
+ * Syscall protocol:
+ *   Syscall number in r12, args in r6-r9
+ *   Return value in r10
+ */
+G_ENTRY(trap):
+        SAVE_STATE (TRAP, r12, ENTRY_SP) // Save registers.
+        stsr    SR_ECR, r19             // Find out which trap it was.
+        ei                              // Enable interrupts.
+        mov     hilo(ret_from_trap), lp // where the trap should return
+
+        // The following two shifts (1) clear out extraneous NMI data in the
+        // upper 16-bits, (2) convert the 0x40 - 0x5f range of trap ECR
+        // numbers into the (0-31) << 2 range we want, (3) set the flags.
+        shl     27, r19                 // chop off all high bits
+        shr     25, r19                 // scale back down and then << 2
+        bnz     2f                      // See if not trap 0.
+
+        // Trap 0 is a `short' system call, skip general trap table.
+        MAKE_SYS_CALL                   // Jump to the syscall function.
+
+2:      // For other traps, use a table lookup.
+        mov     hilo(CSYM(trap_table)), r18
+        add     r19, r18
+        ld.w    0[r18], r18
+        jmp     [r18]                   // Jump to the trap handler.
+END(trap)
+
+/* This is just like ret_from_trap, but first restores extra registers
+   saved by some wrappers.  */
+L_ENTRY(restore_extra_regs_and_ret_from_trap):
+        RESTORE_EXTRA_STATE(TRAP)
+        // fall through
+END(restore_extra_regs_and_ret_from_trap)
+
+/* Entry point used to return from a syscall/trap.  */
+L_ENTRY(ret_from_trap):
+        RETURN(TRAP)
+END(ret_from_trap)
+
+
+/* This the initial entry point for a new child thread, with an appropriate
+   stack in place that makes it look the the child is in the middle of an
+   syscall.  This function is actually `returned to' from switch_thread
+   (copy_thread makes ret_from_fork the return address in each new thread's
+   saved context).  */
+C_ENTRY(ret_from_fork):
+        mov     r10, r6                 // switch_thread returns the prev task.
+        jarl    CSYM(schedule_tail), lp // ...which is schedule_tail's arg
+        mov     r0, r10                 // Child's fork call should return 0.
+        br      ret_from_trap           // Do normal trap return.
+C_END(ret_from_fork)
+
+
+/*
+ * Trap 1: `long' system calls
+ * `Long' syscall protocol:
+ *   Syscall number in r12, args in r6-r9, r13-r14
+ *   Return value in r10
+ */
+L_ENTRY(syscall_long):
+        // Push extra arguments on the stack.  Note that by default, the trap
+        // handler reserves enough stack space for 6 arguments, so we don't
+        // have to make any additional room.
+        st.w    r13, 16[sp]             // arg 5
+        st.w    r14, 20[sp]             // arg 6
+
+        // Make sure r13 and r14 are preserved, in case we have to restart a
+        // system call because of a signal (ep has already been set by caller).
+        st.w    r13, PTO+PT_GPR(13)[sp]
+        st.w    r14, PTO+PT_GPR(13)[sp]
+        mov     hilo(ret_from_long_syscall), lp
+
+        MAKE_SYS_CALL                   // Jump to the syscall function.
+END(syscall_long)
+
+/* Entry point used to return from a long syscall.  Only needed to restore
+   r13/r14 if the general trap mechanism doesnt' do so.  */
+L_ENTRY(ret_from_long_syscall):
+        ld.w    PTO+PT_GPR(13)[sp], r13 // Restore the extra registers
+        ld.w    PTO+PT_GPR(13)[sp], r14
+        br      ret_from_trap           // The rest is the same as other traps
+END(ret_from_long_syscall)
+
+
+/* These syscalls need access to the struct pt_regs on the stack, so we
+   implement them in assembly (they're basically all wrappers anyway).  */
+
+L_ENTRY(sys_fork_wrapper):
+#ifdef CONFIG_MMU
+        addi    SIGCHLD, r0, r6            // Arg 0: flags
+        ld.w    PTO+PT_GPR(GPR_SP)[sp], r7 // Arg 1: child SP (use parent's)
+        movea   PTO, sp, r8                // Arg 2: parent context
+        mov     r0, r9                     // Arg 3/4/5: 0
+        st.w    r0, 16[sp]
+        st.w    r0, 20[sp]
+        mov     hilo(CSYM(do_fork)), r18   // Where the real work gets done
+        br      save_extra_state_tramp     // Save state and go there
+#else
+        // fork almost works, enough to trick you into looking elsewhere :-(
+        addi    -EINVAL, r0, r10
+        jmp     [lp]
+#endif
+END(sys_fork_wrapper)
+
+L_ENTRY(sys_vfork_wrapper):
+        addi    CLONE_VFORK | CLONE_VM | SIGCHLD, r0, r6 // Arg 0: flags
+        ld.w    PTO+PT_GPR(GPR_SP)[sp], r7 // Arg 1: child SP (use parent's)
+        movea   PTO, sp, r8                // Arg 2: parent context
+        mov     r0, r9                     // Arg 3/4/5: 0
+        st.w    r0, 16[sp]
+        st.w    r0, 20[sp]
+        mov     hilo(CSYM(do_fork)), r18   // Where the real work gets done
+        br      save_extra_state_tramp     // Save state and go there
+END(sys_vfork_wrapper)
+
+L_ENTRY(sys_clone_wrapper):
+        ld.w    PTO+PT_GPR(GPR_SP)[sp], r19// parent's stack pointer
+        cmp     r7, r0                     // See if child SP arg (arg 1) is 0.
+        cmov    z, r19, r7, r7             // ... and use the parent's if so.
+        movea   PTO, sp, r8                // Arg 2: parent context
+        mov     r0, r9                     // Arg 3/4/5: 0
+        st.w    r0, 16[sp]
+        st.w    r0, 20[sp]
+        mov     hilo(CSYM(do_fork)), r18   // Where the real work gets done
+        br      save_extra_state_tramp     // Save state and go there
+END(sys_clone_wrapper)
+
+
+L_ENTRY(sys_execve_wrapper):
+        movea   PTO, sp, r9             // add user context as 4th arg
+        jr      CSYM(sys_execve)        // Do real work (tail-call).
+END(sys_execve_wrapper)
+
+
+L_ENTRY(sys_sigsuspend_wrapper):
+        movea   PTO, sp, r7             // add user context as 2nd arg
+        mov     hilo(CSYM(sys_sigsuspend)), r18 // syscall function
+        jarl    save_extra_state_tramp, lp      // Save state and do it
+        br      restore_extra_regs_and_ret_from_trap
+END(sys_sigsuspend_wrapper)
+L_ENTRY(sys_rt_sigsuspend_wrapper):
+        movea   PTO, sp, r8             // add user context as 3rd arg
+        mov     hilo(CSYM(sys_rt_sigsuspend)), r18 // syscall function
+        jarl    save_extra_state_tramp, lp         // Save state and do it
+        br      restore_extra_regs_and_ret_from_trap
+END(sys_rt_sigsuspend_wrapper)
+
+L_ENTRY(sys_sigreturn_wrapper):
+        movea   PTO, sp, r6             // add user context as 1st arg
+        mov     hilo(CSYM(sys_sigreturn)), r18  // syscall function
+        jarl    save_extra_state_tramp, lp      // Save state and do it
+        br      restore_extra_regs_and_ret_from_trap
+END(sys_sigreturn_wrapper)
+L_ENTRY(sys_rt_sigreturn_wrapper):
+        movea   PTO, sp, r6             // add user context as 1st arg
+        mov     hilo(CSYM(sys_rt_sigreturn)), r18// syscall function
+        jarl    save_extra_state_tramp, lp       // Save state and do it
+        br      restore_extra_regs_and_ret_from_trap
+END(sys_rt_sigreturn_wrapper)
+
+
+/* Save any state not saved by SAVE_STATE(TRAP), and jump to r18.
+   It's main purpose is to share the rather lengthy code sequence that
+   SAVE_STATE expands into among the above wrapper functions.  */
+L_ENTRY(save_extra_state_tramp):
+        SAVE_EXTRA_STATE(TRAP)          // Save state not saved by entry.
+        jmp     [r18]                   // Do the work the caller wants
+END(save_extra_state_tramp)
+
+
+/*
+ * Hardware maskable interrupts.
+ *
+ * The stack-pointer (r3) should have already been saved to the memory
+ * location ENTRY_SP (the reason for this is that the interrupt vectors may be
+ * beyond a 22-bit signed offset jump from the actual interrupt handler, and
+ * this allows them to save the stack-pointer and use that register to do an
+ * indirect jump).
+ */
+G_ENTRY(irq):
+        SAVE_STATE (IRQ, r0, ENTRY_SP)  // Save registers.
+
+        stsr    SR_ECR, r6              // Find out which interrupt it was.
+        movea   PTO, sp, r7             // User regs are arg2
+
+        // All v850 implementations I know about encode their interrupts as
+        // multiples of 0x10, starting at 0x80 (after NMIs and software
+        // interrupts).  Convert this number into a simple IRQ index for the
+        // rest of the kernel.  We also clear the upper 16 bits, which hold
+        // NMI info, and don't appear to be cleared when a NMI returns.
+        shl     16, r6                  // clear upper 16 bits
+        shr     20, r6                  // shift back, and remove lower nibble
+        add     -8, r6                  // remove bias for irqs
+
+        // Call the high-level interrupt handling code.
+        jarl    CSYM(handle_irq), lp
+
+        RETURN(IRQ)
+END(irq)
+
+
+/*
+ * Debug trap / illegal-instruction exception
+ *
+ * The stack-pointer (r3) should have already been saved to the memory
+ * location ENTRY_SP (the reason for this is that the interrupt vectors may be
+ * beyond a 22-bit signed offset jump from the actual interrupt handler, and
+ * this allows them to save the stack-pointer and use that register to do an
+ * indirect jump).
+ */
+G_ENTRY(dbtrap):
+        SAVE_STATE (DBTRAP, r0, ENTRY_SP)// Save registers.
+
+        /* First see if we came from kernel mode; if so, the dbtrap
+           instruction has a special meaning, to set the DIR (`debug
+           information register') register.  This is because the DIR register
+           can _only_ be manipulated/read while in `debug mode,' and debug
+           mode is only active while we're inside the dbtrap handler.  The
+           exact functionality is:  { DIR = (DIR | r6) & ~r7; return DIR; }. */
+        ld.b    PTO+PT_KERNEL_MODE[sp], r19
+        cmp     r19, r0
+        bz      1f
+
+        stsr    SR_DIR, r10
+        or      r6, r10
+        not     r7, r7
+        and     r7, r10
+        ldsr    r10, SR_DIR
+        stsr    SR_DIR, r10             // Confirm the value we set
+        st.w    r10, PTO+PT_GPR(10)[sp] // return it
+        br      3f
+
+1:      ei                              // Enable interrupts.
+
+        /* The default signal type we raise.  */
+        mov     SIGTRAP, r6
+
+        /* See if it's a single-step trap.  */
+        stsr    SR_DBPSW, r19
+        andi    0x0800, r19, r19
+        bnz     2f
+
+        /* Look to see if the preceding instruction was is a dbtrap or not,
+           to decide which signal we should use.  */
+        stsr    SR_DBPC, r19            // PC following trapping insn
+        ld.hu   -2[r19], r19
+        ori     0xf840, r0, r20         // DBTRAP insn
+        cmp     r19, r20                // Was this trap caused by DBTRAP?
+        cmov    ne, SIGILL, r6, r6      // Choose signal appropriately
+
+        /* Raise the desired signal.  */
+2:      mov     CURRENT_TASK, r7        // Arg 1: task
+        jarl    CSYM(send_sig), lp      // tail call
+
+3:      RETURN(DBTRAP)
+END(dbtrap)
+
+
+/*
+ * Hardware non-maskable interrupts.
+ *
+ * The stack-pointer (r3) should have already been saved to the memory
+ * location ENTRY_SP (the reason for this is that the interrupt vectors may be
+ * beyond a 22-bit signed offset jump from the actual interrupt handler, and
+ * this allows them to save the stack-pointer and use that register to do an
+ * indirect jump).
+ */
+G_ENTRY(nmi):
+        SAVE_STATE (NMI, r0, NMI_ENTRY_SP); /* Save registers.  */
+
+        stsr    SR_ECR, r6;             /* Find out which nmi it was.  */
+        shr     20, r6;                 /* Extract NMI code in bits 20-24. */
+        movea   PTO, sp, r7;            /* User regs are arg2.  */
+
+        /* Non-maskable interrupts always lie right after maskable interrupts.
+           Call the generic IRQ handler, with two arguments, the IRQ number,
+           and a pointer to the user registers, to handle the specifics.
+           (we subtract one because the first NMI has code 1).  */
+        addi    FIRST_NMI - 1, r6, r6
+        jarl    CSYM(handle_irq), lp
+
+        RETURN(NMI)
+END(nmi)
+
+
+/*
+ * Trap with no handler
+ */
+L_ENTRY(bad_trap_wrapper):
+        mov     r19, r6                 // Arg 0: trap number
+        movea   PTO, sp, r7             // Arg 1: user regs
+        jr      CSYM(bad_trap)          // tail call handler
+END(bad_trap_wrapper)
+
+
+/*
+ * Invoke the scheduler, called from the trap/irq kernel exit path.
+ *
+ * This basically just calls `schedule', but also arranges for extra
+ * registers to be saved for ptrace'd processes, so ptrace can modify them.
+ */
+L_ENTRY(call_scheduler):
+        ld.w    TASK_PTRACE[CURRENT_TASK], r19  // See if task is ptrace'd
+        cmp     r19, r0
+        bnz     1f                      // ... yes, do special stuff
+        jr      CSYM(schedule)          // ... no, just tail-call scheduler
+
+        // Save extra regs for ptrace'd task.  We want to save anything
+        // that would otherwise only be `implicitly' saved by the normal
+        // compiler calling-convention.
+1:      mov     sp, ep                  // Setup EP for SAVE_CALL_SAVED_REGS
+        SAVE_CALL_SAVED_REGS            // Save call-saved registers to stack
+        mov     lp, r20                 // Save LP in a callee-saved register
+
+        jarl    CSYM(schedule), lp      // Call scheduler
+
+        mov     r20, lp
+        mov     sp, ep                  // We can't rely on EP after return
+        RESTORE_CALL_SAVED_REGS         // Restore (possibly modified) regs
+        jmp     [lp]                    // Return to the return path
+END(call_scheduler)
+
+
+/*
+ * This is an out-of-line handler for two special cases during the kernel
+ * trap/irq exit sequence:
+ *
+ *  (1) If r18 is non-zero then a signal needs to be handled, which is
+ *      done, and then the caller returned to.
+ *
+ *  (2) If r18 is non-zero then we're returning to a ptraced process, which
+ *      has several special cases -- single-stepping and trap tracing, both
+ *      of which require using the `dbret' instruction to exit the kernel
+ *      instead of the normal `reti' (this is because the CPU not correctly
+ *      single-step after a reti).  In this case, of course, this handler
+ *      never returns to the caller.
+ *
+ * In either case, all registers should have been saved to the current
+ * state-save-frame on the stack, except for callee-saved registers.
+ *
+ * [These two different cases are combined merely to avoid bloating the
+ * macro-inlined code, not because they really make much sense together!]
+ */
+L_ENTRY(handle_signal_or_ptrace_return):
+        cmp     r18, r0                 // See if handling a signal
+        bz      1f                      // ... nope, go do ptrace return
+
+        // Handle a signal
+        mov     lp, r20                 // Save link-pointer
+        mov     r10, r21                // Save return-values (for trap)
+        mov     r11, r22
+
+        movea   PTO, sp, r6             // Arg 1: struct pt_regs *regs
+        mov     r0, r7                  // Arg 2: sigset_t *oldset
+        jarl    CSYM(do_signal), lp     // Handle the signal
+        di                              // sig handling enables interrupts
+
+        mov     r20, lp                 // Restore link-pointer
+        mov     r21, r10                // Restore return-values (for trap)
+        mov     r22, r11
+        ld.w    TASK_PTRACE[CURRENT_TASK], r19  // check ptrace flags too
+        cmp     r19, r0
+        bnz     1f                      // ... some set, so look more
+2:      jmp     [lp]                    // ... none set, so return normally
+
+        // ptrace return
+1:      ld.w    PTO+PT_PSW[sp], r19     // Look at user-processes's flags
+        andi    0x0800, r19, r19        // See if single-step flag is set
+        bz      2b                      // ... nope, return normally
+
+        // Return as if from a dbtrap insn
+        st.b    r0, KM                  // Now officially in user state.
+        POP_STATE(DBTRAP)               // Restore regs
+        st.w    sp, KSP                 // Save the kernel stack pointer.
+        ld.w    PT_GPR(GPR_SP)-PT_SIZE[sp], sp // Restore user stack pointer.
+        DBTRAP_RET                      // Return from the trap/interrupt.
+END(handle_signal_or_ptrace_return)
+
+
+/*
+ * This is where we switch between two threads.  The arguments are:
+ *   r6 -- pointer to the struct thread for the `current' process
+ *   r7 -- pointer to the struct thread for the `new' process.
+ * when this function returns, it will return to the new thread.
+ */
+C_ENTRY(switch_thread):
+        // Return the previous task (r10 is not clobbered by restore below)
+        mov     CURRENT_TASK, r10
+        // First, push the current processor state on the stack
+        PUSH_STATE(SWITCH)
+        // Now save the location of the kernel stack pointer for this thread;
+        // since we've pushed all other state on the stack, this is enough to
+        // restore it all later.
+        st.w    sp, THREAD_KSP[r6]
+        // Now restore the stack pointer from the new process
+        ld.w    THREAD_KSP[r7], sp
+        // ... and restore all state from that
+        POP_STATE(SWITCH)
+        // Update the current task pointer
+        GET_CURRENT_TASK(CURRENT_TASK)
+        // Now return into the new thread
+        jmp     [lp]
+C_END(switch_thread)
+
+
+        .data
+
+        .align 4
+C_DATA(trap_table):
+        .long bad_trap_wrapper          // trap 0, doesn't use trap table.
+        .long syscall_long              // trap 1, `long' syscall.
+        .long bad_trap_wrapper
+        .long bad_trap_wrapper
+        .long bad_trap_wrapper
+        .long bad_trap_wrapper
+        .long bad_trap_wrapper
+        .long bad_trap_wrapper
+        .long bad_trap_wrapper
+        .long bad_trap_wrapper
+        .long bad_trap_wrapper
+        .long bad_trap_wrapper
+        .long bad_trap_wrapper
+        .long bad_trap_wrapper
+        .long bad_trap_wrapper
+        .long bad_trap_wrapper
+C_END(trap_table)
+
+
+        .section .rodata
+
+        .align 4
+C_DATA(sys_call_table):
+        .long CSYM(sys_restart_syscall) // 0
+        .long CSYM(sys_exit)
+        .long sys_fork_wrapper
+        .long CSYM(sys_read)
+        .long CSYM(sys_write)
+        .long CSYM(sys_open)            // 5
+        .long CSYM(sys_close)
+        .long CSYM(sys_waitpid)
+        .long CSYM(sys_creat)
+        .long CSYM(sys_link)
+        .long CSYM(sys_unlink)          // 10
+        .long sys_execve_wrapper
+        .long CSYM(sys_chdir)
+        .long CSYM(sys_time)
+        .long CSYM(sys_mknod)
+        .long CSYM(sys_chmod)           // 15
+        .long CSYM(sys_chown)
+        .long CSYM(sys_ni_syscall)      // was: break
+        .long CSYM(sys_ni_syscall)      // was: oldstat (aka stat)
+        .long CSYM(sys_lseek)
+        .long CSYM(sys_getpid)          // 20
+        .long CSYM(sys_mount)
+        .long CSYM(sys_oldumount)
+        .long CSYM(sys_setuid)
+        .long CSYM(sys_getuid)
+        .long CSYM(sys_stime)           // 25
+        .long CSYM(sys_ptrace)
+        .long CSYM(sys_alarm)
+        .long CSYM(sys_ni_syscall)      // was: oldfstat (aka fstat)
+        .long CSYM(sys_pause)
+        .long CSYM(sys_utime)           // 30
+        .long CSYM(sys_ni_syscall)      // was: stty
+        .long CSYM(sys_ni_syscall)      // was: gtty
+        .long CSYM(sys_access)
+        .long CSYM(sys_nice)
+        .long CSYM(sys_ni_syscall)      // 35, was: ftime
+        .long CSYM(sys_sync)
+        .long CSYM(sys_kill)
+        .long CSYM(sys_rename)
+        .long CSYM(sys_mkdir)
+        .long CSYM(sys_rmdir)           // 40
+        .long CSYM(sys_dup)
+        .long CSYM(sys_pipe)
+        .long CSYM(sys_times)
+        .long CSYM(sys_ni_syscall)      // was: prof
+        .long CSYM(sys_brk)             // 45
+        .long CSYM(sys_setgid)
+        .long CSYM(sys_getgid)
+        .long CSYM(sys_signal)
+        .long CSYM(sys_geteuid)
+        .long CSYM(sys_getegid)         // 50
+        .long CSYM(sys_acct)
+        .long CSYM(sys_umount)          // recycled never used phys()
+        .long CSYM(sys_ni_syscall)      // was: lock
+        .long CSYM(sys_ioctl)
+        .long CSYM(sys_fcntl)           // 55
+        .long CSYM(sys_ni_syscall)      // was: mpx
+        .long CSYM(sys_setpgid)
+        .long CSYM(sys_ni_syscall)      // was: ulimit
+        .long CSYM(sys_ni_syscall)
+        .long CSYM(sys_umask)           // 60
+        .long CSYM(sys_chroot)
+        .long CSYM(sys_ustat)
+        .long CSYM(sys_dup2)
+        .long CSYM(sys_getppid)
+        .long CSYM(sys_getpgrp)         // 65
+        .long CSYM(sys_setsid)
+        .long CSYM(sys_sigaction)
+        .long CSYM(sys_sgetmask)
+        .long CSYM(sys_ssetmask)
+        .long CSYM(sys_setreuid)        // 70
+        .long CSYM(sys_setregid)
+        .long sys_sigsuspend_wrapper
+        .long CSYM(sys_sigpending)
+        .long CSYM(sys_sethostname)
+        .long CSYM(sys_setrlimit)       // 75
+        .long CSYM(sys_getrlimit)
+        .long CSYM(sys_getrusage)
+        .long CSYM(sys_gettimeofday)
+        .long CSYM(sys_settimeofday)
+        .long CSYM(sys_getgroups)       // 80
+        .long CSYM(sys_setgroups)
+        .long CSYM(sys_select)
+        .long CSYM(sys_symlink)
+        .long CSYM(sys_ni_syscall)      // was: oldlstat (aka lstat)
+        .long CSYM(sys_readlink)        // 85
+        .long CSYM(sys_uselib)
+        .long CSYM(sys_swapon)
+        .long CSYM(sys_reboot)
+        .long CSYM(old_readdir)
+        .long CSYM(sys_mmap)            // 90
+        .long CSYM(sys_munmap)
+        .long CSYM(sys_truncate)
+        .long CSYM(sys_ftruncate)
+        .long CSYM(sys_fchmod)
+        .long CSYM(sys_fchown)          // 95
+        .long CSYM(sys_getpriority)
+        .long CSYM(sys_setpriority)
+        .long CSYM(sys_ni_syscall)      // was: profil
+        .long CSYM(sys_statfs)
+        .long CSYM(sys_fstatfs)         // 100
+        .long CSYM(sys_ni_syscall)      // i386: ioperm
+        .long CSYM(sys_socketcall)
+        .long CSYM(sys_syslog)
+        .long CSYM(sys_setitimer)
+        .long CSYM(sys_getitimer)       // 105
+        .long CSYM(sys_newstat)
+        .long CSYM(sys_newlstat)
+        .long CSYM(sys_newfstat)
+        .long CSYM(sys_ni_syscall)      // was: olduname (aka uname)
+        .long CSYM(sys_ni_syscall)      // 110, i386: iopl
+        .long CSYM(sys_vhangup)
+        .long CSYM(sys_ni_syscall)      // was: idle
+        .long CSYM(sys_ni_syscall)      // i386: vm86old
+        .long CSYM(sys_wait4)
+        .long CSYM(sys_swapoff)         // 115
+        .long CSYM(sys_sysinfo)
+        .long CSYM(sys_ipc)
+        .long CSYM(sys_fsync)
+        .long sys_sigreturn_wrapper
+        .long sys_clone_wrapper         // 120
+        .long CSYM(sys_setdomainname)
+        .long CSYM(sys_newuname)
+        .long CSYM(sys_ni_syscall)      // i386: modify_ldt, m68k: cacheflush
+        .long CSYM(sys_adjtimex)
+        .long CSYM(sys_ni_syscall)      // 125 - sys_mprotect
+        .long CSYM(sys_sigprocmask)
+        .long CSYM(sys_ni_syscall)      // sys_create_module
+        .long CSYM(sys_init_module)
+        .long CSYM(sys_delete_module)
+        .long CSYM(sys_ni_syscall)      // 130 - sys_get_kernel_syms
+        .long CSYM(sys_quotactl)
+        .long CSYM(sys_getpgid)
+        .long CSYM(sys_fchdir)
+        .long CSYM(sys_bdflush)
+        .long CSYM(sys_sysfs)           // 135
+        .long CSYM(sys_personality)
+        .long CSYM(sys_ni_syscall)      // for afs_syscall
+        .long CSYM(sys_setfsuid)
+        .long CSYM(sys_setfsgid)
+        .long CSYM(sys_llseek)          // 140
+        .long CSYM(sys_getdents)
+        .long CSYM(sys_select)          // for backward compat; remove someday
+        .long CSYM(sys_flock)
+        .long CSYM(sys_ni_syscall)      // sys_msync
+        .long CSYM(sys_readv)           // 145
+        .long CSYM(sys_writev)
+        .long CSYM(sys_getsid)
+        .long CSYM(sys_fdatasync)
+        .long CSYM(sys_sysctl)
+        .long CSYM(sys_ni_syscall)      // 150 - sys_mlock
+        .long CSYM(sys_ni_syscall)      // sys_munlock
+        .long CSYM(sys_ni_syscall)      // sys_mlockall
+        .long CSYM(sys_ni_syscall)      // sys_munlockall
+        .long CSYM(sys_sched_setparam)
+        .long CSYM(sys_sched_getparam)  // 155
+        .long CSYM(sys_sched_setscheduler)
+        .long CSYM(sys_sched_getscheduler)
+        .long CSYM(sys_sched_yield)
+        .long CSYM(sys_sched_get_priority_max)
+        .long CSYM(sys_sched_get_priority_min)  // 160
+        .long CSYM(sys_sched_rr_get_interval)
+        .long CSYM(sys_nanosleep)
+        .long CSYM(sys_ni_syscall)      // sys_mremap
+        .long CSYM(sys_setresuid)
+        .long CSYM(sys_getresuid)       // 165
+        .long CSYM(sys_ni_syscall)      // for vm86
+        .long CSYM(sys_ni_syscall)      // sys_query_module
+        .long CSYM(sys_poll)
+        .long CSYM(sys_nfsservctl)
+        .long CSYM(sys_setresgid)       // 170
+        .long CSYM(sys_getresgid)
+        .long CSYM(sys_prctl)
+        .long sys_rt_sigreturn_wrapper
+        .long CSYM(sys_rt_sigaction)
+        .long CSYM(sys_rt_sigprocmask)  // 175
+        .long CSYM(sys_rt_sigpending)
+        .long CSYM(sys_rt_sigtimedwait)
+        .long CSYM(sys_rt_sigqueueinfo)
+        .long sys_rt_sigsuspend_wrapper
+        .long CSYM(sys_pread64)         // 180
+        .long CSYM(sys_pwrite64)
+        .long CSYM(sys_lchown)
+        .long CSYM(sys_getcwd)
+        .long CSYM(sys_capget)
+        .long CSYM(sys_capset)          // 185
+        .long CSYM(sys_sigaltstack)
+        .long CSYM(sys_sendfile)
+        .long CSYM(sys_ni_syscall)      // streams1
+        .long CSYM(sys_ni_syscall)      // streams2
+        .long sys_vfork_wrapper         // 190
+        .long CSYM(sys_ni_syscall)
+        .long CSYM(sys_mmap2)
+        .long CSYM(sys_truncate64)
+        .long CSYM(sys_ftruncate64)
+        .long CSYM(sys_stat64)          // 195
+        .long CSYM(sys_lstat64)
+        .long CSYM(sys_fstat64)
+        .long CSYM(sys_fcntl64)
+        .long CSYM(sys_getdents64)
+        .long CSYM(sys_pivot_root)      // 200
+        .long CSYM(sys_gettid)
+        .long CSYM(sys_tkill)
+sys_call_table_end:
+C_END(sys_call_table)
diff --git a/arch/v850/kernel/fpga85e2c.c b/arch/v850/kernel/fpga85e2c.c
new file mode 100644
index 000000000000..4bac5149b3c2
--- /dev/null
+++ b/arch/v850/kernel/fpga85e2c.c
@@ -0,0 +1,171 @@
+/*
+ * arch/v850/kernel/fpga85e2c.h -- Machine-dependent defs for
+ *      FPGA implementation of V850E2/NA85E2C
+ *
+ *  Copyright (C) 2002,03  NEC Electronics Corporation
+ *  Copyright (C) 2002,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/swap.h>
+#include <linux/bootmem.h>
+#include <linux/irq.h>
+#include <linux/bitops.h>
+
+#include <asm/atomic.h>
+#include <asm/page.h>
+#include <asm/machdep.h>
+
+#include "mach.h"
+
+extern void memcons_setup (void);
+
+
+#define REG_DUMP_ADDR           0x220000
+
+
+extern struct irqaction reg_snap_action; /* fwd decl */
+
+
+void __init mach_early_init (void)
+{
+        int i;
+        const u32 *src;
+        register u32 *dst asm ("ep");
+        extern u32 _intv_end, _intv_load_start;
+
+        /* Set bus sizes: CS0 32-bit, CS1 16-bit, CS7 8-bit,
+           everything else 32-bit.  */
+        V850E2_BSC = 0x2AA6;
+        for (i = 2; i <= 6; i++)
+                CSDEV(i) = 0;   /* 32 bit */
+
+        /* Ensure that the simulator halts on a panic, instead of going
+           into an infinite loop inside the panic function.  */
+        panic_timeout = -1;
+
+        /* Move the interrupt vectors into their real location.  Note that
+           any relocations there are relative to the real location, so we
+           don't have to fix anything up.  We use a loop instead of calling
+           memcpy to keep this a leaf function (to avoid a function
+           prologue being generated).  */
+        dst = 0x10;             /* &_intv_start + 0x10.  */
+        src = &_intv_load_start;
+        do {
+                u32 t0 = src[0], t1 = src[1], t2 = src[2], t3 = src[3];
+                u32 t4 = src[4], t5 = src[5], t6 = src[6], t7 = src[7];
+                dst[0] = t0; dst[1] = t1; dst[2] = t2; dst[3] = t3;
+                dst[4] = t4; dst[5] = t5; dst[6] = t6; dst[7] = t7;
+                dst += 8;
+                src += 8;
+        } while (dst < &_intv_end);
+}
+
+void __init mach_setup (char **cmdline)
+{
+        memcons_setup ();
+
+        /* Setup up NMI0 to copy the registers to a known memory location.
+           The FGPA board has a button that produces NMI0 when pressed, so
+           this allows us to push the button, and then look at memory to see
+           what's in the registers (there's no other way to easily do so).
+           We have to use `setup_irq' instead of `request_irq' because it's
+           still too early to do memory allocation.  */
+        setup_irq (IRQ_NMI (0), &reg_snap_action);
+}
+
+void mach_get_physical_ram (unsigned long *ram_start, unsigned long *ram_len)
+{
+        *ram_start = ERAM_ADDR;
+        *ram_len = ERAM_SIZE;
+}
+
+void __init mach_sched_init (struct irqaction *timer_action)
+{
+        /* Setup up the timer interrupt.  The FPGA peripheral control
+           registers _only_ work with single-bit writes (set1/clr1)!  */
+        __clear_bit (RPU_GTMC_CE_BIT, &RPU_GTMC);
+        __clear_bit (RPU_GTMC_CLK_BIT, &RPU_GTMC);
+        __set_bit (RPU_GTMC_CE_BIT, &RPU_GTMC);
+
+        /* We use the first RPU interrupt, which occurs every 8.192ms.  */
+        setup_irq (IRQ_RPU (0), timer_action);
+}
+
+
+void mach_gettimeofday (struct timespec *tv)
+{
+        tv->tv_sec = 0;
+        tv->tv_nsec = 0;
+}
+
+void machine_halt (void) __attribute__ ((noreturn));
+void machine_halt (void)
+{
+        for (;;) {
+                DWC(0) = 0x7777;
+                DWC(1) = 0x7777;
+                ASC = 0xffff;
+                FLGREG(0) = 1;  /* Halt immediately.  */
+                asm ("di; halt; nop; nop; nop; nop; nop");
+        }
+}
+
+EXPORT_SYMBOL(machine_halt);
+
+void machine_restart (char *__unused)
+{
+        machine_halt ();
+}
+
+EXPORT_SYMBOL(machine_restart);
+
+void machine_power_off (void)
+{
+        machine_halt ();
+}
+
+EXPORT_SYMBOL(machine_power_off);
+
+
+/* Interrupts */
+
+struct v850e_intc_irq_init irq_inits[] = {
+        { "IRQ", 0,             NUM_MACH_IRQS,  1, 7 },
+        { "RPU", IRQ_RPU(0),    IRQ_RPU_NUM,    1, 6 },
+        { 0 }
+};
+#define NUM_IRQ_INITS ((sizeof irq_inits / sizeof irq_inits[0]) - 1)
+
+struct hw_interrupt_type hw_itypes[NUM_IRQ_INITS];
+
+/* Initialize interrupts.  */
+void __init mach_init_irqs (void)
+{
+        v850e_intc_init_irq_types (irq_inits, hw_itypes);
+}
+
+
+/* An interrupt handler that copies the registers to a known memory location,
+   for debugging purposes.  */
+
+static void make_reg_snap (int irq, void *dummy, struct pt_regs *regs)
+{
+        (*(unsigned *)REG_DUMP_ADDR)++;
+        (*(struct pt_regs *)(REG_DUMP_ADDR + sizeof (unsigned))) = *regs;
+}
+
+static int reg_snap_dev_id;
+static struct irqaction reg_snap_action = {
+        make_reg_snap, 0, CPU_MASK_NONE, "reg_snap", &reg_snap_dev_id, 0
+};
diff --git a/arch/v850/kernel/fpga85e2c.ld b/arch/v850/kernel/fpga85e2c.ld
new file mode 100644
index 000000000000..b5d4578ae411
--- /dev/null
+++ b/arch/v850/kernel/fpga85e2c.ld
@@ -0,0 +1,62 @@
+/* Linker script for the FPGA implementation of the V850E2 NA85E2C cpu core
+   (CONFIG_V850E2_FPGA85E2C).  */
+
+MEMORY {
+        /* Reset vector.  */
+        RESET    : ORIGIN = 0, LENGTH = 0x10
+        /* Interrupt vectors.  */
+        INTV      : ORIGIN = 0x10, LENGTH = 0x470
+        /* The `window' in RAM were we're allowed to load stuff.  */
+        RAM_LOW   : ORIGIN = 0x480, LENGTH = 0x0005FB80
+        /* Some more ram above the window were we can put bss &c.  */
+        RAM_HIGH  : ORIGIN = 0x00060000, LENGTH = 0x000A0000
+        /* This is the area visible from the outside world (we can use
+           this only for uninitialized data).  */
+        VISIBLE   : ORIGIN = 0x00200000, LENGTH = 0x00060000
+}
+
+SECTIONS {
+        .reset : {
+                __kram_start = . ;
+                __intv_start = . ;
+                        *(.intv.reset)  /* Reset vector */
+        } > RESET
+
+        .ram_low : {
+                __r0_ram = . ;          /* Must be near address 0.  */
+                . = . + 32 ;
+
+                TEXT_CONTENTS
+                DATA_CONTENTS
+                ROOT_FS_CONTENTS
+                RAMK_INIT_CONTENTS_NO_END
+                INITRAMFS_CONTENTS
+        } > RAM_LOW
+
+        /* Where the interrupt vectors are initially loaded.  */
+        __intv_load_start = . ;
+
+        .intv : {
+                        *(.intv.common) /* Vectors common to all v850e proc. */
+                        *(.intv.mach)   /* Machine-specific int. vectors.  */
+                __intv_end = . ;
+        } > INTV  AT> RAM_LOW
+
+        .ram_high : {
+                /* This is here so that when we free init memory the
+                   load-time copy of the interrupt vectors and any empty
+                   space at the end of the `RAM_LOW' area is freed too.  */
+                . = ALIGN (4096);
+                __init_end = . ;
+
+                BSS_CONTENTS
+                __kram_end = . ;
+                BOOTMAP_CONTENTS
+        } > RAM_HIGH
+
+        .visible : {
+                _memcons_output = . ;
+                . = . + 0x8000 ;
+                _memcons_output_end = . ;
+        } > VISIBLE
+}
diff --git a/arch/v850/kernel/gbus_int.c b/arch/v850/kernel/gbus_int.c
new file mode 100644
index 000000000000..92918b8d89ef
--- /dev/null
+++ b/arch/v850/kernel/gbus_int.c
@@ -0,0 +1,271 @@
+/*
+ * arch/v850/kernel/gbus_int.c -- Midas labs GBUS interrupt support
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/signal.h>
+
+#include <asm/machdep.h>
+
+
+/* The number of shared GINT interrupts. */
+#define NUM_GINTS       4
+
+/* For each GINT interrupt, how many GBUS interrupts are using it.  */
+static unsigned gint_num_active_irqs[NUM_GINTS] = { 0 };
+
+/* A table of GINTn interrupts we actually use.
+   Note that we don't use GINT0 because all the boards we support treat it
+   specially.  */
+struct used_gint {
+        unsigned gint;
+        unsigned priority;
+} used_gint[] = {
+        { 1, GBUS_INT_PRIORITY_HIGH },
+        { 3, GBUS_INT_PRIORITY_LOW }
+};
+#define NUM_USED_GINTS  (sizeof used_gint / sizeof used_gint[0])
+
+/* A table of which GINT is used by each GBUS interrupts (they are
+   assigned based on priority).  */
+static unsigned char gbus_int_gint[IRQ_GBUS_INT_NUM];
+
+
+/* Interrupt enabling/disabling.  */
+
+/* Enable interrupt handling for interrupt IRQ.  */
+void gbus_int_enable_irq (unsigned irq)
+{
+        unsigned gint = gbus_int_gint[irq - GBUS_INT_BASE_IRQ];
+        GBUS_INT_ENABLE (GBUS_INT_IRQ_WORD(irq), gint)
+                |= GBUS_INT_IRQ_MASK (irq);
+}
+
+/* Disable interrupt handling for interrupt IRQ.  Note that any
+   interrupts received while disabled will be delivered once the
+   interrupt is enabled again, unless they are explicitly cleared using
+   `gbus_int_clear_pending_irq'.  */
+void gbus_int_disable_irq (unsigned irq)
+{
+        unsigned gint = gbus_int_gint[irq - GBUS_INT_BASE_IRQ];
+        GBUS_INT_ENABLE (GBUS_INT_IRQ_WORD(irq), gint)
+                &= ~GBUS_INT_IRQ_MASK (irq);
+}
+
+/* Return true if interrupt handling for interrupt IRQ is enabled.  */
+int gbus_int_irq_enabled (unsigned irq)
+{
+        unsigned gint = gbus_int_gint[irq - GBUS_INT_BASE_IRQ];
+        return (GBUS_INT_ENABLE (GBUS_INT_IRQ_WORD(irq), gint)
+                & GBUS_INT_IRQ_MASK(irq));
+}
+
+/* Disable all GBUS irqs.  */
+void gbus_int_disable_irqs ()
+{
+        unsigned w, n;
+        for (w = 0; w < GBUS_INT_NUM_WORDS; w++)
+                for (n = 0; n < IRQ_GINT_NUM; n++)
+                        GBUS_INT_ENABLE (w, n) = 0;
+}
+
+/* Clear any pending interrupts for IRQ.  */
+void gbus_int_clear_pending_irq (unsigned irq)
+{
+        GBUS_INT_CLEAR (GBUS_INT_IRQ_WORD(irq)) = GBUS_INT_IRQ_MASK (irq);
+}
+
+/* Return true if interrupt IRQ is pending (but disabled).  */
+int gbus_int_irq_pending (unsigned irq)
+{
+        return (GBUS_INT_STATUS (GBUS_INT_IRQ_WORD(irq))
+                & GBUS_INT_IRQ_MASK(irq));
+}
+
+
+/* Delegating interrupts.  */
+
+/* Handle a shared GINT interrupt by passing to the appropriate GBUS
+   interrupt handler.  */
+static irqreturn_t gbus_int_handle_irq (int irq, void *dev_id,
+                                        struct pt_regs *regs)
+{
+        unsigned w;
+        irqreturn_t rval = IRQ_NONE;
+        unsigned gint = irq - IRQ_GINT (0);
+
+        for (w = 0; w < GBUS_INT_NUM_WORDS; w++) {
+                unsigned status = GBUS_INT_STATUS (w);
+                unsigned enable = GBUS_INT_ENABLE (w, gint);
+
+                /* Only pay attention to enabled interrupts.  */
+                status &= enable;
+                if (status) {
+                        irq = IRQ_GBUS_INT (w * GBUS_INT_BITS_PER_WORD);
+                        do {
+                                /* There's an active interrupt in word
+                                   W, find out which one, and call its
+                                   handler.  */
+
+                                while (! (status & 0x1)) {
+                                        irq++;
+                                        status >>= 1;
+                                }
+                                status &= ~0x1;
+
+                                /* Recursively call handle_irq to handle it. */
+                                handle_irq (irq, regs);
+                                rval = IRQ_HANDLED;
+                        } while (status);
+                }
+        }
+
+        /* Toggle the `all enable' bit back and forth, which should cause
+           another edge transition if there are any other interrupts
+           still pending, and so result in another CPU interrupt.  */
+        GBUS_INT_ENABLE (0, gint) &= ~0x1;
+        GBUS_INT_ENABLE (0, gint) |=  0x1;
+
+        return rval;
+}
+
+
+/* Initialize GBUS interrupt sources.  */
+
+static void irq_nop (unsigned irq) { }
+
+static unsigned gbus_int_startup_irq (unsigned irq)
+{
+        unsigned gint = gbus_int_gint[irq - GBUS_INT_BASE_IRQ];
+
+        if (gint_num_active_irqs[gint] == 0) {
+                /* First enable the CPU interrupt.  */
+                int rval =
+                        request_irq (IRQ_GINT(gint), gbus_int_handle_irq,
+                                     SA_INTERRUPT,
+                                     "gbus_int_handler",
+                                     &gint_num_active_irqs[gint]);
+                if (rval != 0)
+                        return rval;
+        }
+
+        gint_num_active_irqs[gint]++;
+
+        gbus_int_clear_pending_irq (irq);
+        gbus_int_enable_irq (irq);
+
+        return 0;
+}
+
+static void gbus_int_shutdown_irq (unsigned irq)
+{
+        unsigned gint = gbus_int_gint[irq - GBUS_INT_BASE_IRQ];
+
+        gbus_int_disable_irq (irq);
+
+        if (--gint_num_active_irqs[gint] == 0)
+                /* Disable the CPU interrupt.  */
+                free_irq (IRQ_GINT(gint), &gint_num_active_irqs[gint]);
+}
+
+/* Initialize HW_IRQ_TYPES for INTC-controlled irqs described in array
+   INITS (which is terminated by an entry with the name field == 0).  */
+void __init gbus_int_init_irq_types (struct gbus_int_irq_init *inits,
+                                     struct hw_interrupt_type *hw_irq_types)
+{
+        struct gbus_int_irq_init *init;
+        for (init = inits; init->name; init++) {
+                unsigned i;
+                struct hw_interrupt_type *hwit = hw_irq_types++;
+
+                hwit->typename = init->name;
+
+                hwit->startup  = gbus_int_startup_irq;
+                hwit->shutdown = gbus_int_shutdown_irq;
+                hwit->enable   = gbus_int_enable_irq;
+                hwit->disable  = gbus_int_disable_irq;
+                hwit->ack      = irq_nop;
+                hwit->end      = irq_nop;
+                
+                /* Initialize kernel IRQ infrastructure for this interrupt.  */
+                init_irq_handlers(init->base, init->num, init->interval, hwit);
+
+                /* Set the interrupt priorities.  */
+                for (i = 0; i < init->num; i++) {
+                        unsigned j;
+                        for (j = 0; j < NUM_USED_GINTS; j++)
+                                if (used_gint[j].priority > init->priority)
+                                        break;
+                        /* Wherever we stopped looking is one past the
+                           GINT we want. */
+                        gbus_int_gint[init->base + i * init->interval
+                                      - GBUS_INT_BASE_IRQ]
+                                = used_gint[j > 0 ? j - 1 : 0].gint;
+                }
+        }
+}
+
+
+/* Initialize IRQS.  */
+
+/* Chip interrupts (GINTn) shared among GBUS interrupts.  */
+static struct hw_interrupt_type gint_hw_itypes[NUM_USED_GINTS];
+
+
+/* GBUS interrupts themselves.  */
+
+struct gbus_int_irq_init gbus_irq_inits[] __initdata = {
+        /* First set defaults.  */
+        { "GBUS_INT", IRQ_GBUS_INT(0), IRQ_GBUS_INT_NUM, 1, 6},
+        { 0 }
+};
+#define NUM_GBUS_IRQ_INITS  \
+   ((sizeof gbus_irq_inits / sizeof gbus_irq_inits[0]) - 1)
+
+static struct hw_interrupt_type gbus_hw_itypes[NUM_GBUS_IRQ_INITS];
+
+
+/* Initialize GBUS interrupts.  */
+void __init gbus_int_init_irqs (void)
+{
+        unsigned i;
+
+        /* First initialize the shared gint interrupts.  */
+        for (i = 0; i < NUM_USED_GINTS; i++) {
+                unsigned gint = used_gint[i].gint;
+                struct v850e_intc_irq_init gint_irq_init[2];
+
+                /* We initialize one GINT interrupt at a time.  */
+                gint_irq_init[0].name = "GINT";
+                gint_irq_init[0].base = IRQ_GINT (gint);
+                gint_irq_init[0].num = 1;
+                gint_irq_init[0].interval = 1;
+                gint_irq_init[0].priority = used_gint[i].priority;
+
+                gint_irq_init[1].name = 0; /* Terminate the vector.  */
+
+                v850e_intc_init_irq_types (gint_irq_init, gint_hw_itypes);
+        }
+
+        /* Then the GBUS interrupts.  */
+        gbus_int_disable_irqs ();
+        gbus_int_init_irq_types (gbus_irq_inits, gbus_hw_itypes);
+        /* Turn on the `all enable' bits, which are ANDed with
+           individual interrupt enable bits; we only want to bother with
+           the latter.  They are the first bit in the first word of each
+           interrupt-enable area.  */
+        for (i = 0; i < NUM_USED_GINTS; i++)
+                GBUS_INT_ENABLE (0, used_gint[i].gint) = 0x1;
+}
diff --git a/arch/v850/kernel/head.S b/arch/v850/kernel/head.S
new file mode 100644
index 000000000000..c490b937ef14
--- /dev/null
+++ b/arch/v850/kernel/head.S
@@ -0,0 +1,128 @@
+/*
+ * arch/v850/kernel/head.S -- Lowest-level startup code
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <asm/clinkage.h>
+#include <asm/current.h>
+#include <asm/entry.h>
+#include <asm/thread_info.h>
+#include <asm/irq.h>
+
+
+/* Make a slightly more convenient alias for C_SYMBOL_NAME.  */
+#define CSYM    C_SYMBOL_NAME
+
+
+        .text
+
+        // Define `mach_early_init' as a weak symbol
+        .global CSYM(mach_early_init)
+        .weak   CSYM(mach_early_init)
+
+C_ENTRY(start):
+        // Make sure interrupts are turned off, just in case
+        di
+
+#ifdef CONFIG_RESET_GUARD
+        // See if we got here via an unexpected reset
+        ld.w    RESET_GUARD, r19        // Check current value of reset guard
+        mov     RESET_GUARD_ACTIVE, r20
+        cmp     r19, r20
+        bne     1f                      // Guard was not active
+
+        // If we get here, the reset guard was active.  Load up some
+        // interesting values as arguments, and jump to the handler.
+        st.w    r0, RESET_GUARD         // Allow further resets to succeed
+        mov     lp, r6                  // Arg 0: return address
+        ld.b    KM, r7                  // Arg 1: kernel mode
+        mov     sp, r9                  // Arg 3: stack pointer
+        ld.w    KSP, r19                // maybe switch to kernel stack
+        cmp     r7, r0                  // see if already in kernel mode
+        cmov    z, r19, sp, sp          //  and switch to kernel stack if not
+        GET_CURRENT_TASK(r8)            // Arg 2: task pointer
+        jr      CSYM(unexpected_reset)
+
+1:      st.w    r20, RESET_GUARD        // Turn on reset guard
+#endif /* CONFIG_RESET_GUARD */
+
+        // Setup a temporary stack for doing pre-initialization function calls.
+        // 
+        // We can't use the initial kernel stack, because (1) it may be
+        // located in memory we're not allowed to touch, and (2) since
+        // it's in the data segment, calling memcpy to initialize that
+        // area from ROM will overwrite memcpy's return address.
+        mov     hilo(CSYM(_init_stack_end) - 4), sp
+
+        // See if there's a platform-specific early-initialization routine
+        // defined; it's a weak symbol, so it will have an address of zero if
+        // there's not.
+        mov     hilo(CSYM(mach_early_init)), r6
+        cmp     r6, r0
+        bz      3f
+
+        // There is one, so call it.  If this function is written in C, it
+        // should be very careful -- the stack pointer is valid, but very
+        // little else is (e.g., bss is not zeroed yet, and initialized data
+        // hasn't been).
+        jarl    2f, lp                  // first figure out return address
+2:      add     3f - ., lp
+        jmp     [r6]                    // do call
+3:
+
+#ifdef CONFIG_ROM_KERNEL
+        // Copy the data area from ROM to RAM
+        mov     hilo(CSYM(_rom_copy_dst_start)), r6
+        mov     hilo(CSYM(_rom_copy_src_start)), r7
+        mov     hilo(CSYM(_rom_copy_dst_end)), r8
+        sub     r6, r8
+        jarl    CSYM(memcpy), lp
+#endif
+
+        // Load the initial thread's stack, and current task pointer (in r16)
+        mov     hilo(CSYM(init_thread_union)), r19
+        movea   THREAD_SIZE, r19, sp
+        ld.w    TI_TASK[r19], CURRENT_TASK
+
+#ifdef CONFIG_TIME_BOOTUP
+        /* This stuff must come after mach_early_init, because interrupts may
+           not work until after its been called.  */
+        jarl    CSYM(highres_timer_reset), lp
+        jarl    CSYM(highres_timer_start), lp
+#endif
+
+        // Kernel stack pointer save location
+        st.w    sp, KSP
+
+        // Assert that we're in `kernel mode'
+        mov     1, r19
+        st.w    r19, KM
+
+#ifdef CONFIG_ZERO_BSS
+        // Zero bss area, since we can't rely upon any loader to do so
+        mov     hilo(CSYM(_sbss)), r6
+        mov     r0, r7
+        mov     hilo(CSYM(_ebss)), r8
+        sub     r6, r8
+        jarl    CSYM(memset), lp
+#endif
+
+        // What happens if the main kernel function returns (it shouldn't)
+        mov     hilo(CSYM(machine_halt)), lp
+
+        // Start the linux kernel.  We use an indirect jump to get extra
+        // range, because on some platforms this initial startup code
+        // (and the associated platform-specific code in mach_early_init)
+        // are located far away from the main kernel, e.g. so that they
+        // can initialize RAM first and copy the kernel or something.
+        mov     hilo(CSYM(start_kernel)), r12
+        jmp     [r12]
+C_END(start)
diff --git a/arch/v850/kernel/highres_timer.c b/arch/v850/kernel/highres_timer.c
new file mode 100644
index 000000000000..b16ad1eaf966
--- /dev/null
+++ b/arch/v850/kernel/highres_timer.c
@@ -0,0 +1,132 @@
+/*
+ * arch/v850/kernel/highres_timer.c -- High resolution timing routines
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <asm/system.h>
+#include <asm/v850e_timer_d.h>
+#include <asm/highres_timer.h>
+
+#define HIGHRES_TIMER_USEC_SHIFT   12
+
+/* Pre-calculated constant used for converting ticks to real time
+   units.  We initialize it to prevent it being put into BSS.  */
+static u32 highres_timer_usec_prescale = 1;
+
+void highres_timer_slow_tick_irq (void) __attribute__ ((noreturn));
+void highres_timer_slow_tick_irq (void)
+{
+        /* This is an interrupt handler, so it must be very careful to
+           not to trash any registers.  At this point, the stack-pointer
+           (r3) has been saved in the chip ram location ENTRY_SP by the
+           interrupt vector, so we can use it as a scratch register; we
+           must also restore it before returning.  */
+        asm ("ld.w      %0[r0], sp;"
+             "add       1, sp;"
+             "st.w      sp, %0[r0];"
+             "ld.w      %1[r0], sp;" /* restore pre-irq stack-pointer */
+             "reti"
+             ::
+              "i" (HIGHRES_TIMER_SLOW_TICKS_ADDR),
+              "i" (ENTRY_SP_ADDR)
+             : "memory");
+}
+
+void highres_timer_reset (void)
+{
+        V850E_TIMER_D_TMD (HIGHRES_TIMER_TIMER_D_UNIT) = 0;
+        HIGHRES_TIMER_SLOW_TICKS = 0;
+}
+
+void highres_timer_start (void)
+{
+        u32 fast_tick_rate;
+
+        /* Start hardware timer.  */
+        v850e_timer_d_configure (HIGHRES_TIMER_TIMER_D_UNIT,
+                                 HIGHRES_TIMER_SLOW_TICK_RATE);
+
+        fast_tick_rate =
+                (V850E_TIMER_D_BASE_FREQ
+                 >> V850E_TIMER_D_DIVLOG2 (HIGHRES_TIMER_TIMER_D_UNIT));
+
+        /* The obvious way of calculating microseconds from fast ticks
+           is to do:
+
+             usec = fast_ticks * 10^6 / fast_tick_rate
+
+           However, divisions are much slower than multiplications, and
+           the above calculation can overflow, so we do this instead:
+
+             usec = fast_ticks * (10^6 * 2^12 / fast_tick_rate) / 2^12
+
+           since we can pre-calculate (10^6 * (2^12 / fast_tick_rate))
+           and use a shift for dividing by 2^12, this avoids division,
+           and is almost as accurate (it differs by about 2 microseconds
+           at the extreme value of the fast-tick counter's ranger).  */
+        highres_timer_usec_prescale = ((1000000 << HIGHRES_TIMER_USEC_SHIFT)
+                                       / fast_tick_rate);
+
+        /* Enable the interrupt (which is hardwired to this use), and
+           give it the highest priority.  */
+        V850E_INTC_IC (IRQ_INTCMD (HIGHRES_TIMER_TIMER_D_UNIT)) = 0;
+}
+
+void highres_timer_stop (void)
+{
+        /* Stop the timer.  */
+        V850E_TIMER_D_TMCD (HIGHRES_TIMER_TIMER_D_UNIT) =
+                V850E_TIMER_D_TMCD_CAE;
+        /* Disable its interrupt, just in case.  */
+        v850e_intc_disable_irq (IRQ_INTCMD (HIGHRES_TIMER_TIMER_D_UNIT));
+}
+
+inline void highres_timer_read_ticks (u32 *slow_ticks, u32 *fast_ticks)
+{
+        int flags;
+        u32 fast_ticks_1, fast_ticks_2, _slow_ticks;
+
+        local_irq_save (flags);
+        fast_ticks_1 = V850E_TIMER_D_TMD (HIGHRES_TIMER_TIMER_D_UNIT);
+        _slow_ticks = HIGHRES_TIMER_SLOW_TICKS;
+        fast_ticks_2 = V850E_TIMER_D_TMD (HIGHRES_TIMER_TIMER_D_UNIT);
+        local_irq_restore (flags);
+
+        if (fast_ticks_2 < fast_ticks_1)
+                _slow_ticks++;
+
+        *slow_ticks = _slow_ticks;
+        *fast_ticks = fast_ticks_2;
+}
+
+inline void highres_timer_ticks_to_timeval (u32 slow_ticks, u32 fast_ticks,
+                                            struct timeval *tv)
+{
+        unsigned long sec, sec_rem, usec;
+
+        usec = ((fast_ticks * highres_timer_usec_prescale)
+                >> HIGHRES_TIMER_USEC_SHIFT);
+
+        sec = slow_ticks / HIGHRES_TIMER_SLOW_TICK_RATE;
+        sec_rem = slow_ticks % HIGHRES_TIMER_SLOW_TICK_RATE;
+
+        usec += sec_rem * (1000000 / HIGHRES_TIMER_SLOW_TICK_RATE);
+
+        tv->tv_sec = sec;
+        tv->tv_usec = usec;
+}
+
+void highres_timer_read (struct timeval *tv)
+{
+        u32 fast_ticks, slow_ticks;
+        highres_timer_read_ticks (&slow_ticks, &fast_ticks);
+        highres_timer_ticks_to_timeval (slow_ticks, fast_ticks, tv);
+}
diff --git a/arch/v850/kernel/init_task.c b/arch/v850/kernel/init_task.c
new file mode 100644
index 000000000000..ed2f93cf7c66
--- /dev/null
+++ b/arch/v850/kernel/init_task.c
@@ -0,0 +1,49 @@
+/*
+ * arch/v850/kernel/init_task.c -- Initial task/thread structures
+ *
+ *  Copyright (C) 2002,03  NEC Electronics Corporation
+ *  Copyright (C) 2002,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ */
+
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/init_task.h>
+#include <linux/fs.h>
+#include <linux/mqueue.h>
+
+#include <asm/uaccess.h>
+#include <asm/pgtable.h>
+
+static struct fs_struct init_fs = INIT_FS;
+static struct files_struct init_files = INIT_FILES;
+static struct signal_struct init_signals = INIT_SIGNALS (init_signals);
+static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
+struct mm_struct init_mm = INIT_MM (init_mm);
+
+EXPORT_SYMBOL(init_mm);
+
+/*
+ * Initial task structure.
+ *
+ * All other task structs will be allocated on slabs in fork.c
+ */
+struct task_struct init_task = INIT_TASK (init_task);
+
+EXPORT_SYMBOL(init_task);
+
+/*
+ * Initial thread structure.
+ *
+ * We need to make sure that this is 8192-byte aligned due to the
+ * way process stacks are handled. This is done by having a special
+ * "init_task" linker map entry.
+ */
+union thread_union init_thread_union 
+        __attribute__((__section__(".data.init_task"))) =
+                { INIT_THREAD_INFO(init_task) };
diff --git a/arch/v850/kernel/intv.S b/arch/v850/kernel/intv.S
new file mode 100644
index 000000000000..671e4c6150dd
--- /dev/null
+++ b/arch/v850/kernel/intv.S
@@ -0,0 +1,87 @@
+/*
+ * arch/v850/kernel/intv.S -- Interrupt vectors
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <asm/clinkage.h>
+#include <asm/irq.h>
+#include <asm/machdep.h>
+#include <asm/entry.h>
+
+#ifdef CONFIG_V850E_HIGHRES_TIMER
+#include <asm/highres_timer.h>
+#endif
+
+/* Jump to an interrupt/trap handler.  These handlers (defined in entry.S)
+   expect the stack-pointer to be saved in ENTRY_SP, so we use sp to do an
+   indirect jump (which avoids problems when the handler is more than a signed
+   22-bit offset away).  */
+#define JUMP_TO_HANDLER(name, sp_save_loc)                                    \
+        st.w    sp, sp_save_loc;                                              \
+        mov     hilo(name), sp;                                               \
+        jmp     [sp]
+
+
+        /* Reset vector.  */
+        .section        .intv.reset, "ax"
+        .org    0x0
+        mov     hilo(C_SYMBOL_NAME(start)), r1;
+        jmp     [r1]
+
+
+        /* Generic interrupt vectors.  */
+        .section        .intv.common, "ax"
+        .balign 0x10
+        JUMP_TO_HANDLER (nmi, NMI_ENTRY_SP)     // 0x10 - NMI0
+        .balign 0x10
+        JUMP_TO_HANDLER (nmi, NMI_ENTRY_SP)     // 0x20 - NMI1
+        .balign 0x10
+        JUMP_TO_HANDLER (nmi, NMI_ENTRY_SP)     // 0x30 - NMI2
+        
+        .balign 0x10
+        JUMP_TO_HANDLER (trap, ENTRY_SP)        // 0x40 - TRAP0n
+        .balign 0x10
+        JUMP_TO_HANDLER (trap, ENTRY_SP)        // 0x50 - TRAP1n
+
+        .balign 0x10
+        JUMP_TO_HANDLER (dbtrap, ENTRY_SP)      // 0x60 - Illegal op / DBTRAP insn
+
+
+        /* Hardware interrupt vectors.  */
+        .section        .intv.mach, "ax"
+        .org    0x0
+
+#if defined (CONFIG_V850E_HIGHRES_TIMER) && defined (IRQ_INTCMD)
+
+        /* Interrupts before the highres timer interrupt.  */
+        .rept   IRQ_INTCMD (HIGHRES_TIMER_TIMER_D_UNIT)
+        .balign 0x10
+        JUMP_TO_HANDLER (irq, ENTRY_SP)
+        .endr
+
+        /* The highres timer interrupt.  */
+        .balign 0x10
+        JUMP_TO_HANDLER (C_SYMBOL_NAME (highres_timer_slow_tick_irq), ENTRY_SP)
+
+        /* Interrupts after the highres timer interrupt.  */
+        .rept   NUM_CPU_IRQS - IRQ_INTCMD (HIGHRES_TIMER_TIMER_D_UNIT) - 1
+        .balign 0x10
+        JUMP_TO_HANDLER (irq, ENTRY_SP)
+        .endr
+
+#else /* No highres timer */
+
+        .rept   NUM_CPU_IRQS
+        .balign 0x10
+        JUMP_TO_HANDLER (irq, ENTRY_SP)
+        .endr
+
+#endif /* Highres timer */
diff --git a/arch/v850/kernel/irq.c b/arch/v850/kernel/irq.c
new file mode 100644
index 000000000000..336cbf21dc8f
--- /dev/null
+++ b/arch/v850/kernel/irq.c
@@ -0,0 +1,744 @@
+/*
+ * arch/v850/kernel/irq.c -- High-level interrupt handling
+ *
+ *  Copyright (C) 2001,02,03,04  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03,04  Miles Bader <miles@gnu.org>
+ *  Copyright (C) 1994-2000  Ralf Baechle
+ *  Copyright (C) 1992  Linus Torvalds
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * This file was was derived from the mips version, arch/mips/kernel/irq.c
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/irq.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel_stat.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/random.h>
+#include <linux/seq_file.h>
+
+#include <asm/system.h>
+
+/*
+ * Controller mappings for all interrupt sources:
+ */
+irq_desc_t irq_desc[NR_IRQS] __cacheline_aligned = {
+        [0 ... NR_IRQS-1] = {
+                .handler = &no_irq_type,
+                .lock = SPIN_LOCK_UNLOCKED
+        }
+};
+
+/*
+ * Special irq handlers.
+ */
+
+irqreturn_t no_action(int cpl, void *dev_id, struct pt_regs *regs)
+{
+        return IRQ_NONE;
+}
+
+/*
+ * Generic no controller code
+ */
+
+static void enable_none(unsigned int irq) { }
+static unsigned int startup_none(unsigned int irq) { return 0; }
+static void disable_none(unsigned int irq) { }
+static void ack_none(unsigned int irq)
+{
+        /*
+         * 'what should we do if we get a hw irq event on an illegal vector'.
+         * each architecture has to answer this themselves, it doesn't deserve
+         * a generic callback i think.
+         */
+        printk("received IRQ %d with unknown interrupt type\n", irq);
+}
+
+/* startup is the same as "enable", shutdown is same as "disable" */
+#define shutdown_none   disable_none
+#define end_none        enable_none
+
+struct hw_interrupt_type no_irq_type = {
+        "none",
+        startup_none,
+        shutdown_none,
+        enable_none,
+        disable_none,
+        ack_none,
+        end_none
+};
+
+volatile unsigned long irq_err_count, spurious_count;
+
+/*
+ * Generic, controller-independent functions:
+ */
+
+int show_interrupts(struct seq_file *p, void *v)
+{
+        int i = *(loff_t *) v;
+        struct irqaction * action;
+        unsigned long flags;
+
+        if (i == 0) {
+                seq_puts(p, "           ");
+                for (i=0; i < 1 /*smp_num_cpus*/; i++)
+                        seq_printf(p, "CPU%d       ", i);
+                seq_putc(p, '\n');
+        }
+
+        if (i < NR_IRQS) {
+                int j, count, num;
+                const char *type_name = irq_desc[i].handler->typename;
+                spin_lock_irqsave(&irq_desc[j].lock, flags);
+                action = irq_desc[i].action;
+                if (!action) 
+                        goto skip;
+
+                count = 0;
+                num = -1;
+                for (j = 0; j < NR_IRQS; j++)
+                        if (irq_desc[j].handler->typename == type_name) {
+                                if (i == j)
+                                        num = count;
+                                count++;
+                        }
+
+                seq_printf(p, "%3d: ",i);
+                seq_printf(p, "%10u ", kstat_irqs(i));
+                if (count > 1) {
+                        int prec = (num >= 100 ? 3 : num >= 10 ? 2 : 1);
+                        seq_printf(p, " %*s%d", 14 - prec, type_name, num);
+                } else
+                        seq_printf(p, " %14s", type_name);
+                
+                seq_printf(p, "  %s", action->name);
+                for (action=action->next; action; action = action->next)
+                        seq_printf(p, ", %s", action->name);
+                seq_putc(p, '\n');
+skip:
+                spin_unlock_irqrestore(&irq_desc[j].lock, flags);
+        } else if (i == NR_IRQS)
+                seq_printf(p, "ERR: %10lu\n", irq_err_count);
+        return 0;
+}
+
+/*
+ * This should really return information about whether
+ * we should do bottom half handling etc. Right now we
+ * end up _always_ checking the bottom half, which is a
+ * waste of time and is not what some drivers would
+ * prefer.
+ */
+int handle_IRQ_event(unsigned int irq, struct pt_regs * regs, struct irqaction * action)
+{
+        int status = 1; /* Force the "do bottom halves" bit */
+        int ret;
+
+        if (!(action->flags & SA_INTERRUPT))
+                local_irq_enable();
+
+        do {
+                ret = action->handler(irq, action->dev_id, regs);
+                if (ret == IRQ_HANDLED)
+                        status |= action->flags;
+                action = action->next;
+        } while (action);
+        if (status & SA_SAMPLE_RANDOM)
+                add_interrupt_randomness(irq);
+        local_irq_disable();
+
+        return status;
+}
+
+/*
+ * Generic enable/disable code: this just calls
+ * down into the PIC-specific version for the actual
+ * hardware disable after having gotten the irq
+ * controller lock. 
+ */
+ 
+/**
+ *      disable_irq_nosync - disable an irq without waiting
+ *      @irq: Interrupt to disable
+ *
+ *      Disable the selected interrupt line. Disables of an interrupt
+ *      stack. Unlike disable_irq(), this function does not ensure existing
+ *      instances of the IRQ handler have completed before returning.
+ *
+ *      This function may be called from IRQ context.
+ */
+ 
+void inline disable_irq_nosync(unsigned int irq)
+{
+        irq_desc_t *desc = irq_desc + irq;
+        unsigned long flags;
+
+        spin_lock_irqsave(&desc->lock, flags);
+        if (!desc->depth++) {
+                desc->status |= IRQ_DISABLED;
+                desc->handler->disable(irq);
+        }
+        spin_unlock_irqrestore(&desc->lock, flags);
+}
+
+/**
+ *      disable_irq - disable an irq and wait for completion
+ *      @irq: Interrupt to disable
+ *
+ *      Disable the selected interrupt line. Disables of an interrupt
+ *      stack. That is for two disables you need two enables. This
+ *      function waits for any pending IRQ handlers for this interrupt
+ *      to complete before returning. If you use this function while
+ *      holding a resource the IRQ handler may need you will deadlock.
+ *
+ *      This function may be called - with care - from IRQ context.
+ */
+ 
+void disable_irq(unsigned int irq)
+{
+        disable_irq_nosync(irq);
+        synchronize_irq(irq);
+}
+
+/**
+ *      enable_irq - enable interrupt handling on an irq
+ *      @irq: Interrupt to enable
+ *
+ *      Re-enables the processing of interrupts on this IRQ line
+ *      providing no disable_irq calls are now in effect.
+ *
+ *      This function may be called from IRQ context.
+ */
+ 
+void enable_irq(unsigned int irq)
+{
+        irq_desc_t *desc = irq_desc + irq;
+        unsigned long flags;
+
+        spin_lock_irqsave(&desc->lock, flags);
+        switch (desc->depth) {
+        case 1: {
+                unsigned int status = desc->status & ~IRQ_DISABLED;
+                desc->status = status;
+                if ((status & (IRQ_PENDING | IRQ_REPLAY)) == IRQ_PENDING) {
+                        desc->status = status | IRQ_REPLAY;
+                        hw_resend_irq(desc->handler,irq);
+                }
+                desc->handler->enable(irq);
+                /* fall-through */
+        }
+        default:
+                desc->depth--;
+                break;
+        case 0:
+                printk("enable_irq(%u) unbalanced from %p\n", irq,
+                       __builtin_return_address(0));
+        }
+        spin_unlock_irqrestore(&desc->lock, flags);
+}
+
+/* Handle interrupt IRQ.  REGS are the registers at the time of ther
+   interrupt.  */
+unsigned int handle_irq (int irq, struct pt_regs *regs)
+{
+        /* 
+         * We ack quickly, we don't want the irq controller
+         * thinking we're snobs just because some other CPU has
+         * disabled global interrupts (we have already done the
+         * INT_ACK cycles, it's too late to try to pretend to the
+         * controller that we aren't taking the interrupt).
+         *
+         * 0 return value means that this irq is already being
+         * handled by some other CPU. (or is disabled)
+         */
+        int cpu = smp_processor_id();
+        irq_desc_t *desc = irq_desc + irq;
+        struct irqaction * action;
+        unsigned int status;
+
+        irq_enter();
+        kstat_cpu(cpu).irqs[irq]++;
+        spin_lock(&desc->lock);
+        desc->handler->ack(irq);
+        /*
+           REPLAY is when Linux resends an IRQ that was dropped earlier
+           WAITING is used by probe to mark irqs that are being tested
+           */
+        status = desc->status & ~(IRQ_REPLAY | IRQ_WAITING);
+        status |= IRQ_PENDING; /* we _want_ to handle it */
+
+        /*
+         * If the IRQ is disabled for whatever reason, we cannot
+         * use the action we have.
+         */
+        action = NULL;
+        if (likely(!(status & (IRQ_DISABLED | IRQ_INPROGRESS)))) {
+                action = desc->action;
+                status &= ~IRQ_PENDING; /* we commit to handling */
+                status |= IRQ_INPROGRESS; /* we are handling it */
+        }
+        desc->status = status;
+
+        /*
+         * If there is no IRQ handler or it was disabled, exit early.
+           Since we set PENDING, if another processor is handling
+           a different instance of this same irq, the other processor
+           will take care of it.
+         */
+        if (unlikely(!action))
+                goto out;
+
+        /*
+         * Edge triggered interrupts need to remember
+         * pending events.
+         * This applies to any hw interrupts that allow a second
+         * instance of the same irq to arrive while we are in handle_irq
+         * or in the handler. But the code here only handles the _second_
+         * instance of the irq, not the third or fourth. So it is mostly
+         * useful for irq hardware that does not mask cleanly in an
+         * SMP environment.
+         */
+        for (;;) {
+                spin_unlock(&desc->lock);
+                handle_IRQ_event(irq, regs, action);
+                spin_lock(&desc->lock);
+                
+                if (likely(!(desc->status & IRQ_PENDING)))
+                        break;
+                desc->status &= ~IRQ_PENDING;
+        }
+        desc->status &= ~IRQ_INPROGRESS;
+
+out:
+        /*
+         * The ->end() handler has to deal with interrupts which got
+         * disabled while the handler was running.
+         */
+        desc->handler->end(irq);
+        spin_unlock(&desc->lock);
+
+        irq_exit();
+
+        return 1;
+}
+
+/**
+ *      request_irq - allocate an interrupt line
+ *      @irq: Interrupt line to allocate
+ *      @handler: Function to be called when the IRQ occurs
+ *      @irqflags: Interrupt type flags
+ *      @devname: An ascii name for the claiming device
+ *      @dev_id: A cookie passed back to the handler function
+ *
+ *      This call allocates interrupt resources and enables the
+ *      interrupt line and IRQ handling. From the point this
+ *      call is made your handler function may be invoked. Since
+ *      your handler function must clear any interrupt the board 
+ *      raises, you must take care both to initialise your hardware
+ *      and to set up the interrupt handler in the right order.
+ *
+ *      Dev_id must be globally unique. Normally the address of the
+ *      device data structure is used as the cookie. Since the handler
+ *      receives this value it makes sense to use it.
+ *
+ *      If your interrupt is shared you must pass a non NULL dev_id
+ *      as this is required when freeing the interrupt.
+ *
+ *      Flags:
+ *
+ *      SA_SHIRQ                Interrupt is shared
+ *
+ *      SA_INTERRUPT            Disable local interrupts while processing
+ *
+ *      SA_SAMPLE_RANDOM        The interrupt can be used for entropy
+ *
+ */
+ 
+int request_irq(unsigned int irq, 
+                irqreturn_t (*handler)(int, void *, struct pt_regs *),
+                unsigned long irqflags, 
+                const char * devname,
+                void *dev_id)
+{
+        int retval;
+        struct irqaction * action;
+
+#if 1
+        /*
+         * Sanity-check: shared interrupts should REALLY pass in
+         * a real dev-ID, otherwise we'll have trouble later trying
+         * to figure out which interrupt is which (messes up the
+         * interrupt freeing logic etc).
+         */
+        if (irqflags & SA_SHIRQ) {
+                if (!dev_id)
+                        printk("Bad boy: %s (at 0x%x) called us without a dev_id!\n", devname, (&irq)[-1]);
+        }
+#endif
+
+        if (irq >= NR_IRQS)
+                return -EINVAL;
+        if (!handler)
+                return -EINVAL;
+
+        action = (struct irqaction *)
+                        kmalloc(sizeof(struct irqaction), GFP_KERNEL);
+        if (!action)
+                return -ENOMEM;
+
+        action->handler = handler;
+        action->flags = irqflags;
+        cpus_clear(action->mask);
+        action->name = devname;
+        action->next = NULL;
+        action->dev_id = dev_id;
+
+        retval = setup_irq(irq, action);
+        if (retval)
+                kfree(action);
+        return retval;
+}
+
+EXPORT_SYMBOL(request_irq);
+
+/**
+ *      free_irq - free an interrupt
+ *      @irq: Interrupt line to free
+ *      @dev_id: Device identity to free
+ *
+ *      Remove an interrupt handler. The handler is removed and if the
+ *      interrupt line is no longer in use by any driver it is disabled.
+ *      On a shared IRQ the caller must ensure the interrupt is disabled
+ *      on the card it drives before calling this function. The function
+ *      does not return until any executing interrupts for this IRQ
+ *      have completed.
+ *
+ *      This function may be called from interrupt context. 
+ *
+ *      Bugs: Attempting to free an irq in a handler for the same irq hangs
+ *            the machine.
+ */
+ 
+void free_irq(unsigned int irq, void *dev_id)
+{
+        irq_desc_t *desc;
+        struct irqaction **p;
+        unsigned long flags;
+
+        if (irq >= NR_IRQS)
+                return;
+
+        desc = irq_desc + irq;
+        spin_lock_irqsave(&desc->lock,flags);
+        p = &desc->action;
+        for (;;) {
+                struct irqaction * action = *p;
+                if (action) {
+                        struct irqaction **pp = p;
+                        p = &action->next;
+                        if (action->dev_id != dev_id)
+                                continue;
+
+                        /* Found it - now remove it from the list of entries */
+                        *pp = action->next;
+                        if (!desc->action) {
+                                desc->status |= IRQ_DISABLED;
+                                desc->handler->shutdown(irq);
+                        }
+                        spin_unlock_irqrestore(&desc->lock,flags);
+
+                        synchronize_irq(irq);
+                        kfree(action);
+                        return;
+                }
+                printk("Trying to free free IRQ%d\n",irq);
+                spin_unlock_irqrestore(&desc->lock,flags);
+                return;
+        }
+}
+
+EXPORT_SYMBOL(free_irq);
+
+/*
+ * IRQ autodetection code..
+ *
+ * This depends on the fact that any interrupt that
+ * comes in on to an unassigned handler will get stuck
+ * with "IRQ_WAITING" cleared and the interrupt
+ * disabled.
+ */
+
+static DECLARE_MUTEX(probe_sem);
+
+/**
+ *      probe_irq_on    - begin an interrupt autodetect
+ *
+ *      Commence probing for an interrupt. The interrupts are scanned
+ *      and a mask of potential interrupt lines is returned.
+ *
+ */
+ 
+unsigned long probe_irq_on(void)
+{
+        unsigned int i;
+        irq_desc_t *desc;
+        unsigned long val;
+        unsigned long delay;
+
+        down(&probe_sem);
+        /* 
+         * something may have generated an irq long ago and we want to
+         * flush such a longstanding irq before considering it as spurious. 
+         */
+        for (i = NR_IRQS-1; i > 0; i--)  {
+                desc = irq_desc + i;
+
+                spin_lock_irq(&desc->lock);
+                if (!irq_desc[i].action) 
+                        irq_desc[i].handler->startup(i);
+                spin_unlock_irq(&desc->lock);
+        }
+
+        /* Wait for longstanding interrupts to trigger. */
+        for (delay = jiffies + HZ/50; time_after(delay, jiffies); )
+                /* about 20ms delay */ barrier();
+
+        /*
+         * enable any unassigned irqs
+         * (we must startup again here because if a longstanding irq
+         * happened in the previous stage, it may have masked itself)
+         */
+        for (i = NR_IRQS-1; i > 0; i--) {
+                desc = irq_desc + i;
+
+                spin_lock_irq(&desc->lock);
+                if (!desc->action) {
+                        desc->status |= IRQ_AUTODETECT | IRQ_WAITING;
+                        if (desc->handler->startup(i))
+                                desc->status |= IRQ_PENDING;
+                }
+                spin_unlock_irq(&desc->lock);
+        }
+
+        /*
+         * Wait for spurious interrupts to trigger
+         */
+        for (delay = jiffies + HZ/10; time_after(delay, jiffies); )
+                /* about 100ms delay */ barrier();
+
+        /*
+         * Now filter out any obviously spurious interrupts
+         */
+        val = 0;
+        for (i = 0; i < NR_IRQS; i++) {
+                irq_desc_t *desc = irq_desc + i;
+                unsigned int status;
+
+                spin_lock_irq(&desc->lock);
+                status = desc->status;
+
+                if (status & IRQ_AUTODETECT) {
+                        /* It triggered already - consider it spurious. */
+                        if (!(status & IRQ_WAITING)) {
+                                desc->status = status & ~IRQ_AUTODETECT;
+                                desc->handler->shutdown(i);
+                        } else
+                                if (i < 32)
+                                        val |= 1 << i;
+                }
+                spin_unlock_irq(&desc->lock);
+        }
+
+        return val;
+}
+
+EXPORT_SYMBOL(probe_irq_on);
+
+/*
+ * Return a mask of triggered interrupts (this
+ * can handle only legacy ISA interrupts).
+ */
+ 
+/**
+ *      probe_irq_mask - scan a bitmap of interrupt lines
+ *      @val:   mask of interrupts to consider
+ *
+ *      Scan the ISA bus interrupt lines and return a bitmap of
+ *      active interrupts. The interrupt probe logic state is then
+ *      returned to its previous value.
+ *
+ *      Note: we need to scan all the irq's even though we will
+ *      only return ISA irq numbers - just so that we reset them
+ *      all to a known state.
+ */
+unsigned int probe_irq_mask(unsigned long val)
+{
+        int i;
+        unsigned int mask;
+
+        mask = 0;
+        for (i = 0; i < NR_IRQS; i++) {
+                irq_desc_t *desc = irq_desc + i;
+                unsigned int status;
+
+                spin_lock_irq(&desc->lock);
+                status = desc->status;
+
+                if (status & IRQ_AUTODETECT) {
+                        if (i < 16 && !(status & IRQ_WAITING))
+                                mask |= 1 << i;
+
+                        desc->status = status & ~IRQ_AUTODETECT;
+                        desc->handler->shutdown(i);
+                }
+                spin_unlock_irq(&desc->lock);
+        }
+        up(&probe_sem);
+
+        return mask & val;
+}
+
+/*
+ * Return the one interrupt that triggered (this can
+ * handle any interrupt source).
+ */
+
+/**
+ *      probe_irq_off   - end an interrupt autodetect
+ *      @val: mask of potential interrupts (unused)
+ *
+ *      Scans the unused interrupt lines and returns the line which
+ *      appears to have triggered the interrupt. If no interrupt was
+ *      found then zero is returned. If more than one interrupt is
+ *      found then minus the first candidate is returned to indicate
+ *      their is doubt.
+ *
+ *      The interrupt probe logic state is returned to its previous
+ *      value.
+ *
+ *      BUGS: When used in a module (which arguably shouldnt happen)
+ *      nothing prevents two IRQ probe callers from overlapping. The
+ *      results of this are non-optimal.
+ */
+ 
+int probe_irq_off(unsigned long val)
+{
+        int i, irq_found, nr_irqs;
+
+        nr_irqs = 0;
+        irq_found = 0;
+        for (i = 0; i < NR_IRQS; i++) {
+                irq_desc_t *desc = irq_desc + i;
+                unsigned int status;
+
+                spin_lock_irq(&desc->lock);
+                status = desc->status;
+
+                if (status & IRQ_AUTODETECT) {
+                        if (!(status & IRQ_WAITING)) {
+                                if (!nr_irqs)
+                                        irq_found = i;
+                                nr_irqs++;
+                        }
+                        desc->status = status & ~IRQ_AUTODETECT;
+                        desc->handler->shutdown(i);
+                }
+                spin_unlock_irq(&desc->lock);
+        }
+        up(&probe_sem);
+
+        if (nr_irqs > 1)
+                irq_found = -irq_found;
+        return irq_found;
+}
+
+EXPORT_SYMBOL(probe_irq_off);
+
+/* this was setup_x86_irq but it seems pretty generic */
+int setup_irq(unsigned int irq, struct irqaction * new)
+{
+        int shared = 0;
+        unsigned long flags;
+        struct irqaction *old, **p;
+        irq_desc_t *desc = irq_desc + irq;
+
+        /*
+         * Some drivers like serial.c use request_irq() heavily,
+         * so we have to be careful not to interfere with a
+         * running system.
+         */
+        if (new->flags & SA_SAMPLE_RANDOM) {
+                /*
+                 * This function might sleep, we want to call it first,
+                 * outside of the atomic block.
+                 * Yes, this might clear the entropy pool if the wrong
+                 * driver is attempted to be loaded, without actually
+                 * installing a new handler, but is this really a problem,
+                 * only the sysadmin is able to do this.
+                 */
+                rand_initialize_irq(irq);
+        }
+
+        /*
+         * The following block of code has to be executed atomically
+         */
+        spin_lock_irqsave(&desc->lock,flags);
+        p = &desc->action;
+        if ((old = *p) != NULL) {
+                /* Can't share interrupts unless both agree to */
+                if (!(old->flags & new->flags & SA_SHIRQ)) {
+                        spin_unlock_irqrestore(&desc->lock,flags);
+                        return -EBUSY;
+                }
+
+                /* add new interrupt at end of irq queue */
+                do {
+                        p = &old->next;
+                        old = *p;
+                } while (old);
+                shared = 1;
+        }
+
+        *p = new;
+
+        if (!shared) {
+                desc->depth = 0;
+                desc->status &= ~(IRQ_DISABLED | IRQ_AUTODETECT | IRQ_WAITING | IRQ_INPROGRESS);
+                desc->handler->startup(irq);
+        }
+        spin_unlock_irqrestore(&desc->lock,flags);
+
+        /* register_irq_proc(irq); */
+        return 0;
+}
+
+/* Initialize irq handling for IRQs.
+   BASE_IRQ, BASE_IRQ+INTERVAL, ..., BASE_IRQ+NUM*INTERVAL
+   to IRQ_TYPE.  An IRQ_TYPE of 0 means to use a generic interrupt type.  */
+void __init
+init_irq_handlers (int base_irq, int num, int interval,
+                   struct hw_interrupt_type *irq_type)
+{
+        while (num-- > 0) {
+                irq_desc[base_irq].status  = IRQ_DISABLED;
+                irq_desc[base_irq].action  = NULL;
+                irq_desc[base_irq].depth   = 1;
+                irq_desc[base_irq].handler = irq_type;
+                base_irq += interval;
+        }
+}
+
+#if defined(CONFIG_PROC_FS) && defined(CONFIG_SYSCTL)
+void init_irq_proc(void)
+{
+}
+#endif /* CONFIG_PROC_FS && CONFIG_SYSCTL */
diff --git a/arch/v850/kernel/ma.c b/arch/v850/kernel/ma.c
new file mode 100644
index 000000000000..b3dfbc5d2f40
--- /dev/null
+++ b/arch/v850/kernel/ma.c
@@ -0,0 +1,70 @@
+/*
+ * arch/v850/kernel/ma.c -- V850E/MA series of cpu chips
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/swap.h>
+#include <linux/bootmem.h>
+#include <linux/irq.h>
+
+#include <asm/atomic.h>
+#include <asm/page.h>
+#include <asm/machdep.h>
+#include <asm/v850e_timer_d.h>
+
+#include "mach.h"
+
+void __init mach_sched_init (struct irqaction *timer_action)
+{
+        /* Start hardware timer.  */
+        v850e_timer_d_configure (0, HZ);
+        /* Install timer interrupt handler.  */
+        setup_irq (IRQ_INTCMD(0), timer_action);
+}
+
+static struct v850e_intc_irq_init irq_inits[] = {
+        { "IRQ", 0,             NUM_MACH_IRQS,  1, 7 },
+        { "CMD", IRQ_INTCMD(0), IRQ_INTCMD_NUM, 1, 5 },
+        { "DMA", IRQ_INTDMA(0), IRQ_INTDMA_NUM, 1, 2 },
+        { "CSI", IRQ_INTCSI(0), IRQ_INTCSI_NUM, 4, 4 },
+        { "SER", IRQ_INTSER(0), IRQ_INTSER_NUM, 4, 3 },
+        { "SR",  IRQ_INTSR(0),  IRQ_INTSR_NUM,  4, 4 },
+        { "ST",  IRQ_INTST(0),  IRQ_INTST_NUM,  4, 5 },
+        { 0 }
+};
+#define NUM_IRQ_INITS ((sizeof irq_inits / sizeof irq_inits[0]) - 1)
+
+static struct hw_interrupt_type hw_itypes[NUM_IRQ_INITS];
+
+/* Initialize MA chip interrupts.  */
+void __init ma_init_irqs (void)
+{
+        v850e_intc_init_irq_types (irq_inits, hw_itypes);
+}
+
+/* Called before configuring an on-chip UART.  */
+void ma_uart_pre_configure (unsigned chan, unsigned cflags, unsigned baud)
+{
+        /* We only know about the first two UART channels (though
+           specific chips may have more).  */
+        if (chan < 2) {
+                unsigned bits = 0x3 << (chan * 3);
+                /* Specify that the relevant pins on the chip should do
+                   serial I/O, not direct I/O.  */
+                MA_PORT4_PMC |= bits;
+                /* Specify that we're using the UART, not the CSI device.  */
+                MA_PORT4_PFC |= bits;
+        }
+}
diff --git a/arch/v850/kernel/mach.c b/arch/v850/kernel/mach.c
new file mode 100644
index 000000000000..b9db278d2b71
--- /dev/null
+++ b/arch/v850/kernel/mach.c
@@ -0,0 +1,17 @@
+/*
+ * arch/v850/kernel/mach.c -- Defaults for some things defined by "mach.h"
+ *
+ *  Copyright (C) 2001  NEC Corporation
+ *  Copyright (C) 2001  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include "mach.h"
+
+/* Called with each timer tick, if non-zero.  */
+void (*mach_tick)(void) = 0;
diff --git a/arch/v850/kernel/mach.h b/arch/v850/kernel/mach.h
new file mode 100644
index 000000000000..9e0e4816ec56
--- /dev/null
+++ b/arch/v850/kernel/mach.h
@@ -0,0 +1,56 @@
+/*
+ * arch/v850/kernel/mach.h -- Machine-dependent functions used by v850 port
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#ifndef __V850_MACH_H__
+#define __V850_MACH_H__
+
+#include <linux/kernel.h>
+#include <linux/time.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#include <linux/fs.h>
+#include <linux/seq_file.h>
+
+#include <asm/ptrace.h>
+#include <asm/entry.h>
+#include <asm/clinkage.h>
+
+void mach_setup (char **cmdline);
+void mach_gettimeofday (struct timespec *tv);
+void mach_sched_init (struct irqaction *timer_action);
+void mach_get_physical_ram (unsigned long *ram_start, unsigned long *ram_len);
+void mach_init_irqs (void);
+
+/* If defined, is called very early in the kernel initialization.  The
+   stack pointer is valid, but very little has been initialized (e.g.,
+   bss is not zeroed yet) when this is called, so care must taken.  */
+void mach_early_init (void);
+
+/* If defined, called after the bootmem allocator has been initialized,
+   to allow the platform-dependent code to reserve any areas of RAM that
+   the kernel shouldn't touch.  */
+void mach_reserve_bootmem (void) __attribute__ ((__weak__));
+
+/* Called with each timer tick, if non-zero.  */
+extern void (*mach_tick) (void);
+
+/* The following establishes aliases for various mach_ functions to the
+   name by which the rest of the kernel calls them.  These statements
+   should only have an effect in the file that defines the actual functions. */
+#define MACH_ALIAS(to, from)                                                  \
+   asm (".global " macrology_stringify (C_SYMBOL_NAME (to)) ";"               \
+        macrology_stringify (C_SYMBOL_NAME (to))                              \
+        " = " macrology_stringify (C_SYMBOL_NAME (from)))
+/* e.g.: MACH_ALIAS (kernel_name,       arch_spec_name);  */
+
+#endif /* __V850_MACH_H__ */
diff --git a/arch/v850/kernel/me2.c b/arch/v850/kernel/me2.c
new file mode 100644
index 000000000000..6527c218f91d
--- /dev/null
+++ b/arch/v850/kernel/me2.c
@@ -0,0 +1,74 @@
+/*
+ * arch/v850/kernel/me2.c -- V850E/ME2 chip-specific support
+ *
+ *  Copyright (C) 2003  NEC Corporation
+ *  Copyright (C) 2003  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/swap.h>
+#include <linux/bootmem.h>
+#include <linux/irq.h>
+
+#include <asm/atomic.h>
+#include <asm/page.h>
+#include <asm/machdep.h>
+#include <asm/v850e_timer_d.h>
+
+#include "mach.h"
+
+void __init mach_sched_init (struct irqaction *timer_action)
+{
+        /* Start hardware timer.  */
+        v850e_timer_d_configure (0, HZ);
+        /* Install timer interrupt handler.  */
+        setup_irq (IRQ_INTCMD(0), timer_action);
+}
+
+static struct v850e_intc_irq_init irq_inits[] = {
+        { "IRQ",    0,                NUM_CPU_IRQS,      1, 7 },
+        { "INTP",   IRQ_INTP(0),      IRQ_INTP_NUM,      1, 5 },
+        { "CMD",    IRQ_INTCMD(0),    IRQ_INTCMD_NUM,    1, 3 },
+        { "UBTIRE", IRQ_INTUBTIRE(0), IRQ_INTUBTIRE_NUM, 5, 4 },
+        { "UBTIR",  IRQ_INTUBTIR(0),  IRQ_INTUBTIR_NUM,  5, 4 },
+        { "UBTIT",  IRQ_INTUBTIT(0),  IRQ_INTUBTIT_NUM,  5, 4 },
+        { "UBTIF",  IRQ_INTUBTIF(0),  IRQ_INTUBTIF_NUM,  5, 4 },
+        { "UBTITO", IRQ_INTUBTITO(0), IRQ_INTUBTITO_NUM, 5, 4 },
+        { 0 }
+};
+#define NUM_IRQ_INITS ((sizeof irq_inits / sizeof irq_inits[0]) - 1)
+
+static struct hw_interrupt_type hw_itypes[NUM_IRQ_INITS];
+
+/* Initialize V850E/ME2 chip interrupts.  */
+void __init me2_init_irqs (void)
+{
+        v850e_intc_init_irq_types (irq_inits, hw_itypes);
+}
+
+/* Called before configuring an on-chip UART.  */
+void me2_uart_pre_configure (unsigned chan, unsigned cflags, unsigned baud)
+{
+        if (chan == 0) {
+                /* Specify that the relevent pins on the chip should do
+                   serial I/O, not direct I/O.  */
+                ME2_PORT1_PMC |= 0xC;
+                /* Specify that we're using the UART, not the CSI device. */
+                ME2_PORT1_PFC |= 0xC;
+        } else if (chan == 1) {
+                /* Specify that the relevent pins on the chip should do
+                   serial I/O, not direct I/O.  */
+                ME2_PORT2_PMC |= 0x6;
+                /* Specify that we're using the UART, not the CSI device. */
+                ME2_PORT2_PFC |= 0x6;
+        }
+}
diff --git a/arch/v850/kernel/memcons.c b/arch/v850/kernel/memcons.c
new file mode 100644
index 000000000000..491614c435cd
--- /dev/null
+++ b/arch/v850/kernel/memcons.c
@@ -0,0 +1,135 @@
+/*
+ * arch/v850/kernel/memcons.c -- Console I/O to a memory buffer
+ *
+ *  Copyright (C) 2001,02  NEC Corporation
+ *  Copyright (C) 2001,02  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/kernel.h>
+#include <linux/console.h>
+#include <linux/tty.h>
+#include <linux/tty_driver.h>
+#include <linux/init.h>
+
+/* If this device is enabled, the linker map should define start and
+   end points for its buffer. */
+extern char memcons_output[], memcons_output_end;
+
+/* Current offset into the buffer.  */
+static unsigned long memcons_offs = 0;
+
+/* Spinlock protecting memcons_offs.  */
+static DEFINE_SPINLOCK(memcons_lock);
+
+
+static size_t write (const char *buf, size_t len)
+{
+        int flags;
+        char *point;
+
+        spin_lock_irqsave (memcons_lock, flags);
+
+        point = memcons_output + memcons_offs;
+        if (point + len >= &memcons_output_end) {
+                len = &memcons_output_end - point;
+                memcons_offs = 0;
+        } else
+                memcons_offs += len;
+
+        spin_unlock_irqrestore (memcons_lock, flags);
+
+        memcpy (point, buf, len);
+
+        return len;
+}
+
+
+/*  Low-level console. */
+
+static void memcons_write (struct console *co, const char *buf, unsigned len)
+{
+        while (len > 0)
+                len -= write (buf, len);
+}
+
+static struct tty_driver *tty_driver;
+
+static struct tty_driver *memcons_device (struct console *co, int *index)
+{
+        *index = co->index;
+        return tty_driver;
+}
+
+static struct console memcons =
+{
+    .name       = "memcons",
+    .write      = memcons_write,
+    .device     = memcons_device,
+    .flags      = CON_PRINTBUFFER,
+    .index      = -1,
+};
+
+void memcons_setup (void)
+{
+        register_console (&memcons);
+        printk (KERN_INFO "Console: static memory buffer (memcons)\n");
+}
+
+/* Higher level TTY interface.  */
+
+int memcons_tty_open (struct tty_struct *tty, struct file *filp)
+{
+        return 0;
+}
+
+int memcons_tty_write (struct tty_struct *tty, const unsigned char *buf, int len)
+{
+        return write (buf, len);
+}
+
+int memcons_tty_write_room (struct tty_struct *tty)
+{
+        return &memcons_output_end - (memcons_output + memcons_offs);
+}
+
+int memcons_tty_chars_in_buffer (struct tty_struct *tty)
+{
+        /* We have no buffer.  */
+        return 0;
+}
+
+static struct tty_operations ops = {
+        .open = memcons_tty_open,
+        .write = memcons_tty_write,
+        .write_room = memcons_tty_write_room,
+        .chars_in_buffer = memcons_tty_chars_in_buffer,
+};
+
+int __init memcons_tty_init (void)
+{
+        int err;
+        struct tty_driver *driver = alloc_tty_driver(1);
+        if (!driver)
+                return -ENOMEM;
+
+        driver->name = "memcons";
+        driver->major = TTY_MAJOR;
+        driver->minor_start = 64;
+        driver->type = TTY_DRIVER_TYPE_SYSCONS;
+        driver->init_termios = tty_std_termios;
+        tty_set_operations(driver, &ops);
+        err = tty_register_driver(driver);
+        if (err) {
+                put_tty_driver(driver);
+                return err;
+        }
+        tty_driver = driver;
+        return 0;
+}
+__initcall (memcons_tty_init);
diff --git a/arch/v850/kernel/module.c b/arch/v850/kernel/module.c
new file mode 100644
index 000000000000..64aeb3e37c52
--- /dev/null
+++ b/arch/v850/kernel/module.c
@@ -0,0 +1,237 @@
+/*
+ * arch/v850/kernel/module.c -- Architecture-specific module functions
+ *
+ *  Copyright (C) 2002,03  NEC Electronics Corporation
+ *  Copyright (C) 2002,03  Miles Bader <miles@gnu.org>
+ *  Copyright (C) 2001,03  Rusty Russell
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ *
+ * Derived in part from arch/ppc/kernel/module.c
+ */
+
+#include <linux/kernel.h>
+#include <linux/vmalloc.h>
+#include <linux/moduleloader.h>
+#include <linux/elf.h>
+
+#if 0
+#define DEBUGP printk
+#else
+#define DEBUGP(fmt , ...)
+#endif
+
+void *module_alloc (unsigned long size)
+{
+        return size == 0 ? 0 : vmalloc (size);
+}
+
+void module_free (struct module *mod, void *module_region)
+{
+        vfree (module_region);
+        /* FIXME: If module_region == mod->init_region, trim exception
+           table entries. */
+}
+
+int module_finalize (const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs,
+                     struct module *mod)
+{
+        return 0;
+}
+
+/* Count how many different relocations (different symbol, different
+   addend) */
+static unsigned int count_relocs(const Elf32_Rela *rela, unsigned int num)
+{
+        unsigned int i, j, ret = 0;
+
+        /* Sure, this is order(n^2), but it's usually short, and not
+           time critical */
+        for (i = 0; i < num; i++) {
+                for (j = 0; j < i; j++) {
+                        /* If this addend appeared before, it's
+                           already been counted */
+                        if (ELF32_R_SYM(rela[i].r_info)
+                            == ELF32_R_SYM(rela[j].r_info)
+                            && rela[i].r_addend == rela[j].r_addend)
+                                break;
+                }
+                if (j == i) ret++;
+        }
+        return ret;
+}
+
+/* Get the potential trampolines size required of the init and
+   non-init sections */
+static unsigned long get_plt_size(const Elf32_Ehdr *hdr,
+                                  const Elf32_Shdr *sechdrs,
+                                  const char *secstrings,
+                                  int is_init)
+{
+        unsigned long ret = 0;
+        unsigned i;
+
+        /* Everything marked ALLOC (this includes the exported
+           symbols) */
+        for (i = 1; i < hdr->e_shnum; i++) {
+                /* If it's called *.init*, and we're not init, we're
+                   not interested */
+                if ((strstr(secstrings + sechdrs[i].sh_name, ".init") != 0)
+                    != is_init)
+                        continue;
+
+                if (sechdrs[i].sh_type == SHT_RELA) {
+                        DEBUGP("Found relocations in section %u\n", i);
+                        DEBUGP("Ptr: %p.  Number: %u\n",
+                               (void *)hdr + sechdrs[i].sh_offset,
+                               sechdrs[i].sh_size / sizeof(Elf32_Rela));
+                        ret += count_relocs((void *)hdr
+                                             + sechdrs[i].sh_offset,
+                                             sechdrs[i].sh_size
+                                             / sizeof(Elf32_Rela))
+                                * sizeof(struct v850_plt_entry);
+                }
+        }
+
+        return ret;
+}
+
+int module_frob_arch_sections(Elf32_Ehdr *hdr,
+                              Elf32_Shdr *sechdrs,
+                              char *secstrings,
+                              struct module *me)
+{
+        unsigned int i;
+
+        /* Find .plt and .pltinit sections */
+        for (i = 0; i < hdr->e_shnum; i++) {
+                if (strcmp(secstrings + sechdrs[i].sh_name, ".init.plt") == 0)
+                        me->arch.init_plt_section = i;
+                else if (strcmp(secstrings + sechdrs[i].sh_name, ".plt") == 0)
+                        me->arch.core_plt_section = i;
+        }
+        if (!me->arch.core_plt_section || !me->arch.init_plt_section) {
+                printk("Module doesn't contain .plt or .plt.init sections.\n");
+                return -ENOEXEC;
+        }
+
+        /* Override their sizes */
+        sechdrs[me->arch.core_plt_section].sh_size
+                = get_plt_size(hdr, sechdrs, secstrings, 0);
+        sechdrs[me->arch.init_plt_section].sh_size
+                = get_plt_size(hdr, sechdrs, secstrings, 1);
+        return 0;
+}
+
+int apply_relocate (Elf32_Shdr *sechdrs, const char *strtab,
+                    unsigned int symindex, unsigned int relsec,
+                    struct module *mod)
+{
+        printk ("Barf\n");
+        return -ENOEXEC;
+}
+
+/* Set up a trampoline in the PLT to bounce us to the distant function */
+static uint32_t do_plt_call (void *location, Elf32_Addr val,
+                             Elf32_Shdr *sechdrs, struct module *mod)
+{
+        struct v850_plt_entry *entry;
+        /* Instructions used to do the indirect jump.  */
+        uint32_t tramp[2];
+
+        /* We have to trash a register, so we assume that any control
+           transfer more than 21-bits away must be a function call
+           (so we can use a call-clobbered register).  */
+        tramp[0] = 0x0621 + ((val & 0xffff) << 16);   /* mov sym, r1 ... */
+        tramp[1] = ((val >> 16) & 0xffff) + 0x610000; /* ...; jmp r1 */
+
+        /* Init, or core PLT? */
+        if (location >= mod->module_core
+            && location < mod->module_core + mod->core_size)
+                entry = (void *)sechdrs[mod->arch.core_plt_section].sh_addr;
+        else
+                entry = (void *)sechdrs[mod->arch.init_plt_section].sh_addr;
+
+        /* Find this entry, or if that fails, the next avail. entry */
+        while (entry->tramp[0])
+                if (entry->tramp[0] == tramp[0] && entry->tramp[1] == tramp[1])
+                        return (uint32_t)entry;
+                else
+                        entry++;
+
+        entry->tramp[0] = tramp[0];
+        entry->tramp[1] = tramp[1];
+
+        return (uint32_t)entry;
+}
+
+int apply_relocate_add (Elf32_Shdr *sechdrs, const char *strtab,
+                        unsigned int symindex, unsigned int relsec,
+                        struct module *mod)
+{
+        unsigned int i;
+        Elf32_Rela *rela = (void *)sechdrs[relsec].sh_addr;
+
+        DEBUGP ("Applying relocate section %u to %u\n", relsec,
+                sechdrs[relsec].sh_info);
+
+        for (i = 0; i < sechdrs[relsec].sh_size / sizeof (*rela); i++) {
+                /* This is where to make the change */
+                uint32_t *loc
+                        = ((void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
+                           + rela[i].r_offset);
+                /* This is the symbol it is referring to.  Note that all
+                   undefined symbols have been resolved.  */
+                Elf32_Sym *sym
+                        = ((Elf32_Sym *)sechdrs[symindex].sh_addr
+                           + ELF32_R_SYM (rela[i].r_info));
+                uint32_t val = sym->st_value + rela[i].r_addend;
+
+                switch (ELF32_R_TYPE (rela[i].r_info)) {
+                case R_V850_32:
+                        /* We write two shorts instead of a long because even
+                           32-bit insns only need half-word alignment, but
+                           32-bit data writes need to be long-word aligned.  */
+                        val += ((uint16_t *)loc)[0];
+                        val += ((uint16_t *)loc)[1] << 16;
+                        ((uint16_t *)loc)[0] = val & 0xffff;
+                        ((uint16_t *)loc)[1] = (val >> 16) & 0xffff;
+                        break;
+
+                case R_V850_22_PCREL:
+                        /* Maybe jump indirectly via a PLT table entry.  */
+                        if ((int32_t)(val - (uint32_t)loc) > 0x1fffff
+                            || (int32_t)(val - (uint32_t)loc) < -0x200000)
+                                val = do_plt_call (loc, val, sechdrs, mod);
+
+                        val -= (uint32_t)loc;
+
+                        /* We write two shorts instead of a long because
+                           even 32-bit insns only need half-word alignment,
+                           but 32-bit data writes need to be long-word
+                           aligned.  */
+                        ((uint16_t *)loc)[0] =
+                                (*(uint16_t *)loc & 0xffc0) /* opcode + reg */
+                                | ((val >> 16) & 0xffc03f); /* offs high */
+                        ((uint16_t *)loc)[1] =
+                                (val & 0xffff);             /* offs low */
+                        break;
+
+                default:
+                        printk (KERN_ERR "module %s: Unknown reloc: %u\n",
+                                mod->name, ELF32_R_TYPE (rela[i].r_info));
+                        return -ENOEXEC;
+                }
+        }
+
+        return 0;
+}
+
+void
+module_arch_cleanup(struct module *mod)
+{
+}
diff --git a/arch/v850/kernel/process.c b/arch/v850/kernel/process.c
new file mode 100644
index 000000000000..9c708c32c1f0
--- /dev/null
+++ b/arch/v850/kernel/process.c
@@ -0,0 +1,236 @@
+/*
+ * arch/v850/kernel/process.c -- Arch-dependent process handling
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/stddef.h>
+#include <linux/unistd.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/user.h>
+#include <linux/a.out.h>
+#include <linux/reboot.h>
+
+#include <asm/uaccess.h>
+#include <asm/system.h>
+#include <asm/pgtable.h>
+
+extern void ret_from_fork (void);
+
+
+/* The idle loop.  */
+void default_idle (void)
+{
+        while (1) {
+                while (! need_resched ())
+                        asm ("halt; nop; nop; nop; nop; nop" ::: "cc");
+                schedule ();
+        }
+}
+
+void (*idle)(void) = default_idle;
+
+/*
+ * The idle thread. There's no useful work to be
+ * done, so just try to conserve power and have a
+ * low exit latency (ie sit in a loop waiting for
+ * somebody to say that they'd like to reschedule)
+ */
+void cpu_idle (void)
+{
+        /* endless idle loop with no priority at all */
+        (*idle) ();
+}
+
+/*
+ * This is the mechanism for creating a new kernel thread.
+ *
+ * NOTE! Only a kernel-only process (ie the swapper or direct descendants who
+ * haven't done an "execve()") should use this: it will work within a system
+ * call from a "real" process, but the process memory space will not be free'd
+ * until both the parent and the child have exited.
+ */
+int kernel_thread (int (*fn)(void *), void *arg, unsigned long flags)
+{
+        register mm_segment_t fs = get_fs ();
+        register unsigned long syscall asm (SYSCALL_NUM);
+        register unsigned long arg0 asm (SYSCALL_ARG0);
+        register unsigned long ret asm (SYSCALL_RET);
+
+        set_fs (KERNEL_DS);
+
+        /* Clone this thread.  Note that we don't pass the clone syscall's
+           second argument -- it's ignored for calls from kernel mode (the
+           child's SP is always set to the top of the kernel stack).  */
+        arg0 = flags | CLONE_VM;
+        syscall = __NR_clone;
+        asm volatile ("trap " SYSCALL_SHORT_TRAP
+                      : "=r" (ret), "=r" (syscall)
+                      : "1" (syscall), "r" (arg0)
+                      : SYSCALL_SHORT_CLOBBERS);
+
+        if (ret == 0) {
+                /* In child thread, call FN and exit.  */
+                arg0 = (*fn) (arg);
+                syscall = __NR_exit;
+                asm volatile ("trap " SYSCALL_SHORT_TRAP
+                              : "=r" (ret), "=r" (syscall)
+                              : "1" (syscall), "r" (arg0)
+                              : SYSCALL_SHORT_CLOBBERS);
+        }
+
+        /* In parent.  */
+        set_fs (fs);
+
+        return ret;
+}
+
+void flush_thread (void)
+{
+        set_fs (USER_DS);
+}
+
+int copy_thread (int nr, unsigned long clone_flags,
+                 unsigned long stack_start, unsigned long stack_size,
+                 struct task_struct *p, struct pt_regs *regs)
+{
+        /* Start pushing stuff from the top of the child's kernel stack.  */
+        unsigned long orig_ksp = (unsigned long)p->thread_info + THREAD_SIZE;
+        unsigned long ksp = orig_ksp;
+        /* We push two `state save' stack fames (see entry.S) on the new
+           kernel stack:
+             1) The innermost one is what switch_thread would have
+                pushed, and is used when we context switch to the child
+                thread for the first time.  It's set up to return to
+                ret_from_fork in entry.S.
+             2) The outermost one (nearest the top) is what a syscall
+                trap would have pushed, and is set up to return to the
+                same location as the parent thread, but with a return
+                value of 0. */
+        struct pt_regs *child_switch_regs, *child_trap_regs;
+
+        /* Trap frame.  */
+        ksp -= STATE_SAVE_SIZE;
+        child_trap_regs = (struct pt_regs *)(ksp + STATE_SAVE_PT_OFFSET);
+        /* Switch frame.  */
+        ksp -= STATE_SAVE_SIZE;
+        child_switch_regs = (struct pt_regs *)(ksp + STATE_SAVE_PT_OFFSET);
+
+        /* First copy parent's register state to child.  */
+        *child_switch_regs = *regs;
+        *child_trap_regs = *regs;
+
+        /* switch_thread returns to the restored value of the lp
+           register (r31), so we make that the place where we want to
+           jump when the child thread begins running.  */
+        child_switch_regs->gpr[GPR_LP] = (v850_reg_t)ret_from_fork;
+
+        if (regs->kernel_mode)
+                /* Since we're returning to kernel-mode, make sure the child's
+                   stored kernel stack pointer agrees with what the actual
+                   stack pointer will be at that point (the trap return code
+                   always restores the SP, even when returning to
+                   kernel-mode).  */
+                child_trap_regs->gpr[GPR_SP] = orig_ksp;
+        else
+                /* Set the child's user-mode stack-pointer (the name
+                   `stack_start' is a misnomer, it's just the initial SP
+                   value).  */
+                child_trap_regs->gpr[GPR_SP] = stack_start;
+
+        /* Thread state for the child (everything else is on the stack).  */
+        p->thread.ksp = ksp;
+
+        return 0;
+}
+
+/*
+ * fill in the user structure for a core dump..
+ */
+void dump_thread (struct pt_regs *regs, struct user *dump)
+{
+#if 0  /* Later.  XXX */
+        dump->magic = CMAGIC;
+        dump->start_code = 0;
+        dump->start_stack = regs->gpr[GPR_SP];
+        dump->u_tsize = ((unsigned long) current->mm->end_code) >> PAGE_SHIFT;
+        dump->u_dsize = ((unsigned long) (current->mm->brk +
+                                          (PAGE_SIZE-1))) >> PAGE_SHIFT;
+        dump->u_dsize -= dump->u_tsize;
+        dump->u_ssize = 0;
+
+        if (dump->start_stack < TASK_SIZE)
+                dump->u_ssize = ((unsigned long) (TASK_SIZE - dump->start_stack)) >> PAGE_SHIFT;
+
+        dump->u_ar0 = (struct user_regs_struct *)((int)&dump->regs - (int)dump);
+        dump->regs = *regs;
+        dump->u_fpvalid = 0;
+#endif
+}
+
+/*
+ * sys_execve() executes a new program.
+ */
+int sys_execve (char *name, char **argv, char **envp, struct pt_regs *regs)
+{
+        char *filename = getname (name);
+        int error = PTR_ERR (filename);
+
+        if (! IS_ERR (filename)) {
+                error = do_execve (filename, argv, envp, regs);
+                putname (filename);
+        }
+
+        return error;
+}
+
+
+/*
+ * These bracket the sleeping functions..
+ */
+#define first_sched     ((unsigned long)__sched_text_start)
+#define last_sched      ((unsigned long)__sched_text_end)
+
+unsigned long get_wchan (struct task_struct *p)
+{
+#if 0  /* Barf.  Figure out the stack-layout later.  XXX  */
+        unsigned long fp, pc;
+        int count = 0;
+
+        if (!p || p == current || p->state == TASK_RUNNING)
+                return 0;
+
+        pc = thread_saved_pc (p);
+
+        /* This quite disgusting function walks up the stack, following
+           saved return address, until it something that's out of bounds
+           (as defined by `first_sched' and `last_sched').  It then
+           returns the last PC that was in-bounds.  */
+        do {
+                if (fp < stack_page + sizeof (struct task_struct) ||
+                    fp >= 8184+stack_page)
+                        return 0;
+                pc = ((unsigned long *)fp)[1];
+                if (pc < first_sched || pc >= last_sched)
+                        return pc;
+                fp = *(unsigned long *) fp;
+        } while (count++ < 16);
+#endif
+
+        return 0;
+}
diff --git a/arch/v850/kernel/procfs.c b/arch/v850/kernel/procfs.c
new file mode 100644
index 000000000000..e6f9d060ad5b
--- /dev/null
+++ b/arch/v850/kernel/procfs.c
@@ -0,0 +1,67 @@
+/*
+ * arch/v850/kernel/procfs.c -- Introspection functions for /proc filesystem
+ *
+ *  Copyright (C) 2001,02  NEC Corporation
+ *  Copyright (C) 2001,02  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include "mach.h"
+
+static int cpuinfo_print (struct seq_file *m, void *v)
+{
+        extern unsigned long loops_per_jiffy;
+        
+        seq_printf (m, "CPU-Family:     v850\nCPU-Arch: %s\n", CPU_ARCH);
+
+#ifdef CPU_MODEL_LONG
+        seq_printf (m, "CPU-Model:      %s (%s)\n", CPU_MODEL, CPU_MODEL_LONG);
+#else
+        seq_printf (m, "CPU-Model:      %s\n", CPU_MODEL);
+#endif
+
+#ifdef CPU_CLOCK_FREQ
+        seq_printf (m, "CPU-Clock:      %ld (%ld MHz)\n",
+                    (long)CPU_CLOCK_FREQ,
+                    (long)CPU_CLOCK_FREQ / 1000000);
+#endif
+
+        seq_printf (m, "BogoMips:       %lu.%02lu\n",
+                    loops_per_jiffy/(500000/HZ),
+                    (loops_per_jiffy/(5000/HZ)) % 100);
+
+#ifdef PLATFORM_LONG
+        seq_printf (m, "Platform:       %s (%s)\n", PLATFORM, PLATFORM_LONG);
+#elif defined (PLATFORM)
+        seq_printf (m, "Platform:       %s\n", PLATFORM);
+#endif
+
+        return 0;
+}
+
+static void *cpuinfo_start (struct seq_file *m, loff_t *pos)
+{
+        return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
+}
+
+static void *cpuinfo_next (struct seq_file *m, void *v, loff_t *pos)
+{
+        ++*pos;
+        return cpuinfo_start (m, pos);
+}
+
+static void cpuinfo_stop (struct seq_file *m, void *v)
+{
+}
+
+struct seq_operations cpuinfo_op = {
+        .start  = cpuinfo_start,
+        .next   = cpuinfo_next,
+        .stop   = cpuinfo_stop,
+        .show   = cpuinfo_print
+};
diff --git a/arch/v850/kernel/ptrace.c b/arch/v850/kernel/ptrace.c
new file mode 100644
index 000000000000..8fa780757dcd
--- /dev/null
+++ b/arch/v850/kernel/ptrace.c
@@ -0,0 +1,282 @@
+/*
+ * arch/v850/kernel/ptrace.c -- `ptrace' system call
+ *
+ *  Copyright (C) 2002,03,04  NEC Electronics Corporation
+ *  Copyright (C) 2002,03,04  Miles Bader <miles@gnu.org>
+ *
+ * Derived from arch/mips/kernel/ptrace.c:
+ *
+ *  Copyright (C) 1992 Ross Biro
+ *  Copyright (C) Linus Torvalds
+ *  Copyright (C) 1994, 95, 96, 97, 98, 2000 Ralf Baechle
+ *  Copyright (C) 1996 David S. Miller
+ *  Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
+ *  Copyright (C) 1999 MIPS Technologies, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/smp_lock.h>
+#include <linux/ptrace.h>
+
+#include <asm/errno.h>
+#include <asm/ptrace.h>
+#include <asm/processor.h>
+#include <asm/uaccess.h>
+
+/* Returns the address where the register at REG_OFFS in P is stashed away.  */
+static v850_reg_t *reg_save_addr (unsigned reg_offs, struct task_struct *t)
+{
+        struct pt_regs *regs;
+
+        /* Three basic cases:
+
+           (1) A register normally saved before calling the scheduler, is
+               available in the kernel entry pt_regs structure at the top
+               of the kernel stack.  The kernel trap/irq exit path takes
+               care to save/restore almost all registers for ptrace'd
+               processes.
+
+           (2) A call-clobbered register, where the process P entered the
+               kernel via [syscall] trap, is not stored anywhere; that's
+               OK, because such registers are not expected to be preserved
+               when the trap returns anyway (so we don't actually bother to
+               test for this case).
+
+           (3) A few registers not used at all by the kernel, and so
+               normally never saved except by context-switches, are in the
+               context switch state.  */
+
+        if (reg_offs == PT_CTPC || reg_offs == PT_CTPSW || reg_offs == PT_CTBP)
+                /* Register saved during context switch.  */
+                regs = thread_saved_regs (t);
+        else
+                /* Register saved during kernel entry (or not available).  */
+                regs = task_regs (t);
+
+        return (v850_reg_t *)((char *)regs + reg_offs);
+}
+
+/* Set the bits SET and clear the bits CLEAR in the v850e DIR
+   (`debug information register').  Returns the new value of DIR.  */
+static inline v850_reg_t set_dir (v850_reg_t set, v850_reg_t clear)
+{
+        register v850_reg_t rval asm ("r10");
+        register v850_reg_t arg0 asm ("r6") = set;
+        register v850_reg_t arg1 asm ("r7") = clear;
+
+        /* The dbtrap handler has exactly this functionality when called
+           from kernel mode.  0xf840 is a `dbtrap' insn.  */
+        asm (".short 0xf840" : "=r" (rval) : "r" (arg0), "r" (arg1));
+
+        return rval;
+}
+
+/* Makes sure hardware single-stepping is (globally) enabled.
+   Returns true if successful.  */
+static inline int enable_single_stepping (void)
+{
+        static int enabled = 0; /* Remember whether we already did it.  */
+        if (! enabled) {
+                /* Turn on the SE (`single-step enable') bit, 0x100, in the
+                   DIR (`debug information register').  This may fail if a
+                   processor doesn't support it or something.  We also try
+                   to clear bit 0x40 (`INI'), which is necessary to use the
+                   debug stuff on the v850e2; on the v850e, clearing 0x40
+                   shouldn't cause any problem.  */
+                v850_reg_t dir = set_dir (0x100, 0x40);
+                /* Make sure it really got set.  */
+                if (dir & 0x100)
+                        enabled = 1;
+        }
+        return enabled;
+}
+
+/* Try to set CHILD's single-step flag to VAL.  Returns true if successful.  */
+static int set_single_step (struct task_struct *t, int val)
+{
+        v850_reg_t *psw_addr = reg_save_addr(PT_PSW, t);
+        if (val) {
+                /* Make sure single-stepping is enabled.  */
+                if (! enable_single_stepping ())
+                        return 0;
+                /* Set T's single-step flag.  */
+                *psw_addr |= 0x800;
+        } else
+                *psw_addr &= ~0x800;
+        return 1;
+}
+
+int sys_ptrace(long request, long pid, long addr, long data)
+{
+        struct task_struct *child;
+        int rval;
+
+        lock_kernel();
+
+        if (request == PTRACE_TRACEME) {
+                /* are we already being traced? */
+                if (current->ptrace & PT_PTRACED) {
+                        rval = -EPERM;
+                        goto out;
+                }
+                /* set the ptrace bit in the process flags. */
+                current->ptrace |= PT_PTRACED;
+                rval = 0;
+                goto out;
+        }
+        rval = -ESRCH;
+        read_lock(&tasklist_lock);
+        child = find_task_by_pid(pid);
+        if (child)
+                get_task_struct(child);
+        read_unlock(&tasklist_lock);
+        if (!child)
+                goto out;
+
+        rval = -EPERM;
+        if (pid == 1)           /* you may not mess with init */
+                goto out_tsk;
+
+        if (request == PTRACE_ATTACH) {
+                rval = ptrace_attach(child);
+                goto out_tsk;
+        }
+        rval = ptrace_check_attach(child, request == PTRACE_KILL);
+        if (rval < 0)
+                goto out_tsk;
+
+        switch (request) {
+                unsigned long val, copied;
+
+        case PTRACE_PEEKTEXT: /* read word at location addr. */
+        case PTRACE_PEEKDATA:
+                copied = access_process_vm(child, addr, &val, sizeof(val), 0);
+                rval = -EIO;
+                if (copied != sizeof(val))
+                        break;
+                rval = put_user(val, (unsigned long *)data);
+                goto out;
+
+        case PTRACE_POKETEXT: /* write the word at location addr. */
+        case PTRACE_POKEDATA:
+                rval = 0;
+                if (access_process_vm(child, addr, &data, sizeof(data), 1)
+                    == sizeof(data))
+                        break;
+                rval = -EIO;
+                goto out;
+
+        /* Read/write the word at location ADDR in the registers.  */
+        case PTRACE_PEEKUSR:
+        case PTRACE_POKEUSR:
+                rval = 0;
+                if (addr >= PT_SIZE && request == PTRACE_PEEKUSR) {
+                        /* Special requests that don't actually correspond
+                           to offsets in struct pt_regs.  */
+                        if (addr == PT_TEXT_ADDR)
+                                val = child->mm->start_code;
+                        else if (addr == PT_DATA_ADDR)
+                                val = child->mm->start_data;
+                        else if (addr == PT_TEXT_LEN)
+                                val = child->mm->end_code
+                                        - child->mm->start_code;
+                        else
+                                rval = -EIO;
+                } else if (addr >= 0 && addr < PT_SIZE && (addr & 0x3) == 0) {
+                        v850_reg_t *reg_addr = reg_save_addr(addr, child);
+                        if (request == PTRACE_PEEKUSR)
+                                val = *reg_addr;
+                        else
+                                *reg_addr = data;
+                } else
+                        rval = -EIO;
+
+                if (rval == 0 && request == PTRACE_PEEKUSR)
+                        rval = put_user (val, (unsigned long *)data);
+                goto out;
+
+        /* Continue and stop at next (return from) syscall */
+        case PTRACE_SYSCALL:
+        /* Restart after a signal.  */
+        case PTRACE_CONT:
+        /* Execute a single instruction. */
+        case PTRACE_SINGLESTEP:
+                rval = -EIO;
+                if ((unsigned long) data > _NSIG)
+                        break;
+
+                /* Turn CHILD's single-step flag on or off.  */
+                if (! set_single_step (child, request == PTRACE_SINGLESTEP))
+                        break;
+
+                if (request == PTRACE_SYSCALL)
+                        set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
+                else
+                        clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
+
+                child->exit_code = data;
+                wake_up_process(child);
+                rval = 0;
+                break;
+
+        /*
+         * make the child exit.  Best I can do is send it a sigkill.
+         * perhaps it should be put in the status that it wants to
+         * exit.
+         */
+        case PTRACE_KILL:
+                rval = 0;
+                if (child->exit_state == EXIT_ZOMBIE)   /* already dead */
+                        break;
+                child->exit_code = SIGKILL;
+                wake_up_process(child);
+                break;
+
+        case PTRACE_DETACH: /* detach a process that was attached. */
+                set_single_step (child, 0);  /* Clear single-step flag */
+                rval = ptrace_detach(child, data);
+                break;
+
+        default:
+                rval = -EIO;
+                goto out;
+        }
+
+out_tsk:
+        put_task_struct(child);
+out:
+        unlock_kernel();
+        return rval;
+}
+
+asmlinkage void syscall_trace(void)
+{
+        if (!test_thread_flag(TIF_SYSCALL_TRACE))
+                return;
+        if (!(current->ptrace & PT_PTRACED))
+                return;
+        /* The 0x80 provides a way for the tracing parent to distinguish
+           between a syscall stop and SIGTRAP delivery */
+        ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
+                                 ? 0x80 : 0));
+        /*
+         * this isn't the same as continuing with a signal, but it will do
+         * for normal use.  strace only continues with a signal if the
+         * stopping signal is not SIGTRAP.  -brl
+         */
+        if (current->exit_code) {
+                send_sig(current->exit_code, current, 1);
+                current->exit_code = 0;
+        }
+}
+
+void ptrace_disable (struct task_struct *child)
+{
+        /* nothing to do */
+}
diff --git a/arch/v850/kernel/rte_cb.c b/arch/v850/kernel/rte_cb.c
new file mode 100644
index 000000000000..7ba397f77aca
--- /dev/null
+++ b/arch/v850/kernel/rte_cb.c
@@ -0,0 +1,200 @@
+/*
+ * include/asm-v850/rte_cb.c -- Midas lab RTE-CB series of evaluation boards
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/fs.h>
+#include <linux/module.h>
+
+#include <asm/machdep.h>
+#include <asm/v850e_uart.h>
+
+#include "mach.h"
+
+static void led_tick (void);
+
+/* LED access routines.  */
+extern unsigned read_leds (int pos, char *buf, int len);
+extern unsigned write_leds (int pos, const char *buf, int len);
+
+#ifdef CONFIG_RTE_CB_MULTI
+extern void multi_init (void);
+#endif
+
+
+void __init rte_cb_early_init (void)
+{
+        v850e_intc_disable_irqs ();
+
+#ifdef CONFIG_RTE_CB_MULTI
+        multi_init ();
+#endif
+}
+
+void __init mach_setup (char **cmdline)
+{
+#ifdef CONFIG_RTE_MB_A_PCI
+        /* Probe for Mother-A, and print a message if we find it.  */
+        *(volatile unsigned long *)MB_A_SRAM_ADDR = 0xDEADBEEF;
+        if (*(volatile unsigned long *)MB_A_SRAM_ADDR == 0xDEADBEEF) {
+                *(volatile unsigned long *)MB_A_SRAM_ADDR = 0x12345678;
+                if (*(volatile unsigned long *)MB_A_SRAM_ADDR == 0x12345678)
+                        printk (KERN_INFO
+                                "          NEC SolutionGear/Midas lab"
+                                " RTE-MOTHER-A motherboard\n");
+        }
+#endif /* CONFIG_RTE_MB_A_PCI */
+
+        mach_tick = led_tick;
+}
+
+void machine_restart (char *__unused)
+{
+#ifdef CONFIG_RESET_GUARD
+        disable_reset_guard ();
+#endif
+        asm ("jmp r0"); /* Jump to the reset vector.  */
+}
+
+EXPORT_SYMBOL(machine_restart);
+
+/* This says `HALt.' in LEDese.  */
+static unsigned char halt_leds_msg[] = { 0x76, 0x77, 0x38, 0xF8 };
+
+void machine_halt (void)
+{
+#ifdef CONFIG_RESET_GUARD
+        disable_reset_guard ();
+#endif
+
+        /* Ignore all interrupts.  */
+        local_irq_disable ();
+
+        /* Write a little message.  */
+        write_leds (0, halt_leds_msg, sizeof halt_leds_msg);
+
+        /* Really halt.  */
+        for (;;)
+                asm ("halt; nop; nop; nop; nop; nop");
+}
+
+EXPORT_SYMBOL(machine_halt);
+
+void machine_power_off (void)
+{
+        machine_halt ();
+}
+
+EXPORT_SYMBOL(machine_power_off);
+
+
+/* Animated LED display for timer tick.  */
+
+#define TICK_UPD_FREQ   6
+static int tick_frames[][10] = {
+        { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, -1 },
+        { 0x63, 0x5c, -1 },
+        { 0x5c, 0x00, -1 },
+        { 0x63, 0x00, -1 },
+        { -1 }
+};
+
+static void led_tick ()
+{
+        static unsigned counter = 0;
+        
+        if (++counter == (HZ / TICK_UPD_FREQ)) {
+                /* Which frame we're currently displaying for each digit.  */
+                static unsigned frame_nums[LED_NUM_DIGITS] = { 0 };
+                /* Display image.  */
+                static unsigned char image[LED_NUM_DIGITS] = { 0 };
+                unsigned char prev_image[LED_NUM_DIGITS];
+                int write_to_leds = 1; /* true if we should actually display */
+                int digit;
+
+                /* We check to see if the physical LEDs contains what we last
+                   wrote to them; if not, we suppress display (this is so that
+                   users can write to the LEDs, and not have their output
+                   overwritten).  As a special case, we start writing again if
+                   all the LEDs are blank, or our display image is all zeros
+                   (indicating that this is the initial update, when the actual
+                   LEDs might contain random data).  */
+                read_leds (0, prev_image, LED_NUM_DIGITS);
+                for (digit = 0; digit < LED_NUM_DIGITS; digit++)
+                        if (image[digit] != prev_image[digit]
+                            && image[digit] && prev_image[digit])
+                        {
+                                write_to_leds = 0;
+                                break;
+                        }
+
+                /* Update display image.  */
+                for (digit = 0;
+                     digit < LED_NUM_DIGITS && tick_frames[digit][0] >= 0;
+                     digit++)
+                {
+                        int frame = tick_frames[digit][frame_nums[digit]];
+                        if (frame < 0) {
+                                image[digit] = tick_frames[digit][0];
+                                frame_nums[digit] = 1;
+                        } else {
+                                image[digit] = frame;
+                                frame_nums[digit]++;
+                                break;
+                        }
+                }
+
+                if (write_to_leds)
+                        /* Write the display image to the physical LEDs.  */
+                        write_leds (0, image, LED_NUM_DIGITS);
+
+                counter = 0;
+        }
+}
+
+
+/* Mother-A interrupts.  */
+
+#ifdef CONFIG_RTE_GBUS_INT
+
+#define L GBUS_INT_PRIORITY_LOW
+#define M GBUS_INT_PRIORITY_MEDIUM
+#define H GBUS_INT_PRIORITY_HIGH
+
+static struct gbus_int_irq_init gbus_irq_inits[] = {
+#ifdef CONFIG_RTE_MB_A_PCI
+        { "MB_A_LAN",   IRQ_MB_A_LAN,           1,                   1, L },
+        { "MB_A_PCI1",  IRQ_MB_A_PCI1(0),       IRQ_MB_A_PCI1_NUM,   1, L },
+        { "MB_A_PCI2",  IRQ_MB_A_PCI2(0),       IRQ_MB_A_PCI2_NUM,   1, L },
+        { "MB_A_EXT",   IRQ_MB_A_EXT(0),        IRQ_MB_A_EXT_NUM,    1, L },
+        { "MB_A_USB_OC",IRQ_MB_A_USB_OC(0),     IRQ_MB_A_USB_OC_NUM, 1, L },
+        { "MB_A_PCMCIA_OC",IRQ_MB_A_PCMCIA_OC,  1,                   1, L },
+#endif
+        { 0 }
+};
+#define NUM_GBUS_IRQ_INITS  \
+   ((sizeof gbus_irq_inits / sizeof gbus_irq_inits[0]) - 1)
+
+static struct hw_interrupt_type gbus_hw_itypes[NUM_GBUS_IRQ_INITS];
+
+#endif /* CONFIG_RTE_GBUS_INT */
+
+
+void __init rte_cb_init_irqs (void)
+{
+#ifdef CONFIG_RTE_GBUS_INT
+        gbus_int_init_irqs ();
+        gbus_int_init_irq_types (gbus_irq_inits, gbus_hw_itypes);
+#endif /* CONFIG_RTE_GBUS_INT */
+}
diff --git a/arch/v850/kernel/rte_cb_leds.c b/arch/v850/kernel/rte_cb_leds.c
new file mode 100644
index 000000000000..b662ad838940
--- /dev/null
+++ b/arch/v850/kernel/rte_cb_leds.c
@@ -0,0 +1,138 @@
+/*
+ * include/asm-v850/rte_cb_leds.c -- Midas lab RTE-CB board LED device support
+ *
+ *  Copyright (C) 2002,03  NEC Electronics Corporation
+ *  Copyright (C) 2002,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/fs.h>
+#include <linux/miscdevice.h>
+
+#include <asm/uaccess.h>
+
+#define LEDS_MINOR      169     /* Minor device number, using misc major.  */
+
+/* The actual LED hardware is write-only, so we hold the contents here too.  */
+static unsigned char leds_image[LED_NUM_DIGITS] = { 0 };
+
+/* Spinlock protecting the above leds.  */
+static DEFINE_SPINLOCK(leds_lock);
+
+/* Common body of LED read/write functions, checks POS and LEN for
+   correctness, declares a variable using IMG_DECL, initialized pointing at
+   the POS position in the LED image buffer, and and iterates COPY_EXPR
+   until BUF is equal to the last buffer position; finally, sets LEN to be
+   the amount actually copied.  IMG should be a variable declaration
+   (without an initializer or a terminating semicolon); POS, BUF, and LEN
+   should all be simple variables.  */
+#define DO_LED_COPY(img_decl, pos, buf, len, copy_expr)                 \
+do {                                                                    \
+        if (pos > LED_NUM_DIGITS)                                       \
+                len = 0;                                                \
+        else {                                                          \
+                if (pos + len > LED_NUM_DIGITS)                         \
+                        len = LED_NUM_DIGITS - pos;                     \
+                                                                        \
+                if (len > 0) {                                          \
+                        int _flags;                                     \
+                        const char *_end = buf + len;                   \
+                        img_decl = &leds_image[pos];                    \
+                                                                        \
+                        spin_lock_irqsave (leds_lock, _flags);          \
+                        do                                              \
+                                (copy_expr);                            \
+                        while (buf != _end);                            \
+                        spin_unlock_irqrestore (leds_lock, _flags);     \
+                }                                                       \
+        }                                                               \
+} while (0)
+
+/* Read LEN bytes from LEDs at position POS, into BUF.
+   Returns actual amount read.  */
+unsigned read_leds (unsigned pos, char *buf, unsigned len)
+{
+        DO_LED_COPY (const char *img, pos, buf, len, *buf++ = *img++);
+        return len;
+}
+
+/* Write LEN bytes to LEDs at position POS, from BUF.
+   Returns actual amount written.  */
+unsigned write_leds (unsigned pos, const char *buf, unsigned len)
+{
+        /* We write the actual LED values backwards, because
+           increasing memory addresses reflect LEDs right-to-left. */
+        volatile char *led = &LED (LED_NUM_DIGITS - pos - 1);
+        /* We invert the value written to the hardware, because 1 = off,
+           and 0 = on.  */
+        DO_LED_COPY (char *img, pos, buf, len,
+                     *led-- = 0xFF ^ (*img++ = *buf++));
+        return len;
+}
+
+
+/* Device functions.  */
+
+static ssize_t leds_dev_read (struct file *file, char *buf, size_t len,
+                              loff_t *pos)
+{
+        char temp_buf[LED_NUM_DIGITS];
+        len = read_leds (*pos, temp_buf, len);
+        if (copy_to_user (buf, temp_buf, len))
+                return -EFAULT;
+        *pos += len;
+        return len;
+}
+
+static ssize_t leds_dev_write (struct file *file, const char *buf, size_t len,
+                               loff_t *pos)
+{
+        char temp_buf[LED_NUM_DIGITS];
+        if (copy_from_user (temp_buf, buf, min_t(size_t, len, LED_NUM_DIGITS)))
+                return -EFAULT;
+        len = write_leds (*pos, temp_buf, len);
+        *pos += len;
+        return len;
+}
+
+static loff_t leds_dev_lseek (struct file *file, loff_t offs, int whence)
+{
+        if (whence == 1)
+                offs += file->f_pos; /* relative */
+        else if (whence == 2)
+                offs += LED_NUM_DIGITS; /* end-relative */
+
+        if (offs < 0 || offs > LED_NUM_DIGITS)
+                return -EINVAL;
+
+        file->f_pos = offs;
+
+        return 0;
+}
+
+static struct file_operations leds_fops = {
+        .read           = leds_dev_read,
+        .write          = leds_dev_write,
+        .llseek         = leds_dev_lseek
+};
+
+static struct miscdevice leds_miscdev = {
+        .name           = "leds",
+        .minor          = LEDS_MINOR,
+        .fops           = &leds_fops
+};
+
+int __init leds_dev_init (void)
+{
+        return misc_register (&leds_miscdev);
+}
+
+__initcall (leds_dev_init);
diff --git a/arch/v850/kernel/rte_cb_multi.c b/arch/v850/kernel/rte_cb_multi.c
new file mode 100644
index 000000000000..963d55ab34cc
--- /dev/null
+++ b/arch/v850/kernel/rte_cb_multi.c
@@ -0,0 +1,121 @@
+/*
+ * include/asm-v850/rte_multi.c -- Support for Multi debugger monitor ROM
+ *      on Midas lab RTE-CB series of evaluation boards
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/init.h>
+
+#include <asm/machdep.h>
+
+#define IRQ_ADDR(irq) (0x80 + (irq) * 0x10)
+
+/* A table of which interrupt vectors to install, since blindly
+   installing all of them makes the debugger stop working.  This is a
+   list of offsets in the interrupt vector area; each entry means to
+   copy that particular 16-byte vector.  An entry less than zero ends
+   the table.  */
+static long multi_intv_install_table[] = {
+        /* Trap vectors */
+        0x40, 0x50,             
+
+#ifdef CONFIG_RTE_CB_MULTI_DBTRAP
+        /* Illegal insn / dbtrap.  These are used by multi, so only handle
+           them if configured to do so.  */
+        0x60,
+#endif
+
+        /* GINT1 - GINT3 (note, not GINT0!) */
+        IRQ_ADDR (IRQ_GINT(1)),
+        IRQ_ADDR (IRQ_GINT(2)),
+        IRQ_ADDR (IRQ_GINT(3)),
+
+        /* Timer D interrupts (up to 4 timers) */
+        IRQ_ADDR (IRQ_INTCMD(0)),
+#if IRQ_INTCMD_NUM > 1
+        IRQ_ADDR (IRQ_INTCMD(1)),
+#if IRQ_INTCMD_NUM > 2
+        IRQ_ADDR (IRQ_INTCMD(2)),
+#if IRQ_INTCMD_NUM > 3
+        IRQ_ADDR (IRQ_INTCMD(3)),
+#endif
+#endif
+#endif
+        
+        /* UART interrupts (up to 3 channels) */
+        IRQ_ADDR (IRQ_INTSER (0)), /* err */
+        IRQ_ADDR (IRQ_INTSR  (0)), /* rx */
+        IRQ_ADDR (IRQ_INTST  (0)), /* tx */
+#if IRQ_INTSR_NUM > 1
+        IRQ_ADDR (IRQ_INTSER (1)), /* err */
+        IRQ_ADDR (IRQ_INTSR  (1)), /* rx */
+        IRQ_ADDR (IRQ_INTST  (1)), /* tx */
+#if IRQ_INTSR_NUM > 2
+        IRQ_ADDR (IRQ_INTSER (2)), /* err */
+        IRQ_ADDR (IRQ_INTSR  (2)), /* rx */
+        IRQ_ADDR (IRQ_INTST  (2)), /* tx */
+#endif
+#endif
+
+        -1
+};
+
+/* Early initialization for kernel using Multi debugger ROM monitor.  */
+void __init multi_init (void)
+{
+        /* We're using the Multi debugger monitor, so we have to install
+           the interrupt vectors.  The monitor doesn't allow them to be
+           initially downloaded into their final destination because
+           it's in the monitor's scratch-RAM area.  Unfortunately, Multi
+           also doesn't deal correctly with ELF sections where the LMA
+           and VMA differ -- it just ignores the LMA -- so we can't use
+           that feature to work around the problem.  What we do instead
+           is just put the interrupt vectors into a normal section, and
+           do the necessary copying and relocation here.  Since the
+           interrupt vector basically only contains `jr' instructions
+           and no-ops, it's not that hard.  */
+        extern unsigned long _intv_load_start, _intv_start;
+        register unsigned long *src = &_intv_load_start;
+        register unsigned long *dst = (unsigned long *)INTV_BASE;
+        register unsigned long jr_fixup = (char *)&_intv_start - (char *)dst;
+        register long *ii;
+
+        /* Copy interrupt vectors as instructed by multi_intv_install_table. */
+        for (ii = multi_intv_install_table; *ii >= 0; ii++) {
+                /* Copy 16-byte interrupt vector at offset *ii.  */
+                int boffs;
+                for (boffs = 0; boffs < 0x10; boffs += sizeof *src) {
+                        /* Copy a single word, fixing up the jump offs
+                           if it's a `jr' instruction.  */
+                        int woffs = (*ii + boffs) / sizeof *src;
+                        unsigned long word = src[woffs];
+
+                        if ((word & 0xFC0) == 0x780) {
+                                /* A `jr' insn, fix up its offset (and yes, the
+                                   weird half-word swapping is intentional). */
+                                unsigned short hi = word & 0xFFFF;
+                                unsigned short lo = word >> 16;
+                                unsigned long udisp22
+                                        = lo + ((hi & 0x3F) << 16);
+                                long disp22 = (long)(udisp22 << 10) >> 10;
+
+                                disp22 += jr_fixup;
+
+                                hi = ((disp22 >> 16) & 0x3F) | 0x780;
+                                lo = disp22 & 0xFFFF;
+
+                                word = hi + (lo << 16);
+                        }
+
+                        dst[woffs] = word;
+                }
+        }
+}
diff --git a/arch/v850/kernel/rte_ma1_cb-rom.ld b/arch/v850/kernel/rte_ma1_cb-rom.ld
new file mode 100644
index 000000000000..87b618f8253b
--- /dev/null
+++ b/arch/v850/kernel/rte_ma1_cb-rom.ld
@@ -0,0 +1,14 @@
+/* Linker script for the Midas labs RTE-V850E/MA1-CB evaluation board
+   (CONFIG_RTE_CB_MA1), with kernel in ROM.  */
+
+MEMORY {
+        ROM   : ORIGIN = 0x00000000, LENGTH = 0x00100000
+        /* 1MB of SRAM.  This memory is mirrored 4 times.  */
+        SRAM  : ORIGIN = SRAM_ADDR,  LENGTH = SRAM_SIZE
+        /* 32MB of SDRAM.  */
+        SDRAM : ORIGIN = SDRAM_ADDR, LENGTH = SDRAM_SIZE
+}
+
+SECTIONS {
+        ROMK_SECTIONS(ROM, SRAM)
+}
diff --git a/arch/v850/kernel/rte_ma1_cb.c b/arch/v850/kernel/rte_ma1_cb.c
new file mode 100644
index 000000000000..3873e276392f
--- /dev/null
+++ b/arch/v850/kernel/rte_ma1_cb.c
@@ -0,0 +1,106 @@
+/*
+ * arch/v850/kernel/rte_ma1_cb.c -- Midas labs RTE-V850E/MA1-CB board
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/bootmem.h>
+
+#include <asm/atomic.h>
+#include <asm/page.h>
+#include <asm/ma1.h>
+#include <asm/rte_ma1_cb.h>
+#include <asm/v850e_timer_c.h>
+
+#include "mach.h"
+
+
+/* SRAM and SDRAM are almost contiguous (with a small hole in between;
+   see mach_reserve_bootmem for details), so just use both as one big area.  */
+#define RAM_START       SRAM_ADDR
+#define RAM_END         (SDRAM_ADDR + SDRAM_SIZE)
+
+
+void __init mach_early_init (void)
+{
+        rte_cb_early_init ();
+}
+
+void __init mach_get_physical_ram (unsigned long *ram_start,
+                                   unsigned long *ram_len)
+{
+        *ram_start = RAM_START;
+        *ram_len = RAM_END - RAM_START;
+}
+
+void __init mach_reserve_bootmem ()
+{
+#ifdef CONFIG_RTE_CB_MULTI
+        /* Prevent the kernel from touching the monitor's scratch RAM.  */
+        reserve_bootmem (MON_SCRATCH_ADDR, MON_SCRATCH_SIZE);
+#endif
+
+        /* The space between SRAM and SDRAM is filled with duplicate
+           images of SRAM.  Prevent the kernel from using them.  */
+        reserve_bootmem (SRAM_ADDR + SRAM_SIZE,
+                         SDRAM_ADDR - (SRAM_ADDR + SRAM_SIZE));
+}
+
+void mach_gettimeofday (struct timespec *tv)
+{
+        tv->tv_sec = 0;
+        tv->tv_nsec = 0;
+}
+
+/* Called before configuring an on-chip UART.  */
+void rte_ma1_cb_uart_pre_configure (unsigned chan,
+                                    unsigned cflags, unsigned baud)
+{
+        /* The RTE-MA1-CB connects some general-purpose I/O pins on the
+           CPU to the RTS/CTS lines of UART 0's serial connection.
+           I/O pins P42 and P43 are RTS and CTS respectively.  */
+        if (chan == 0) {
+                /* Put P42 & P43 in I/O port mode.  */
+                MA_PORT4_PMC &= ~0xC;
+                /* Make P42 an output, and P43 an input.  */
+                MA_PORT4_PM = (MA_PORT4_PM & ~0xC) | 0x8;
+        }
+
+        /* Do pre-configuration for the actual UART.  */
+        ma_uart_pre_configure (chan, cflags, baud);
+}
+
+void __init mach_init_irqs (void)
+{
+        unsigned tc;
+
+        /* Initialize interrupts.  */
+        ma_init_irqs ();
+        rte_cb_init_irqs ();
+
+        /* Use falling-edge-sensitivity for interrupts .  */
+        V850E_TIMER_C_SESC (0) &= ~0xC;
+        V850E_TIMER_C_SESC (1) &= ~0xF;
+
+        /* INTP000-INTP011 are shared with `Timer C', so we have to set
+           up Timer C to pass them through as raw interrupts.  */
+        for (tc = 0; tc < 2; tc++)
+                /* Turn on the timer.  */
+                V850E_TIMER_C_TMCC0 (tc) |= V850E_TIMER_C_TMCC0_CAE;
+
+        /* Make sure the relevant port0/port1 pins are assigned
+           interrupt duty.  We used INTP001-INTP011 (don't screw with
+           INTP000 because the monitor uses it).  */
+        MA_PORT0_PMC |= 0x4;    /* P02 (INTP001) in IRQ mode.  */
+        MA_PORT1_PMC |= 0x6;    /* P11 (INTP010) & P12 (INTP011) in IRQ mode.*/
+}
diff --git a/arch/v850/kernel/rte_ma1_cb.ld b/arch/v850/kernel/rte_ma1_cb.ld
new file mode 100644
index 000000000000..c8e16d16be41
--- /dev/null
+++ b/arch/v850/kernel/rte_ma1_cb.ld
@@ -0,0 +1,57 @@
+/* Linker script for the Midas labs RTE-V850E/MA1-CB evaluation board
+   (CONFIG_RTE_CB_MA1), with kernel in SDRAM, under Multi debugger.  */
+
+MEMORY {
+        /* 1MB of SRAM; we can't use the last 32KB, because it's used by
+           the monitor scratch-RAM.  This memory is mirrored 4 times.  */
+        SRAM  : ORIGIN = SRAM_ADDR,  LENGTH = (SRAM_SIZE - MON_SCRATCH_SIZE)
+        /* Monitor scratch RAM; only the interrupt vectors should go here.  */
+        MRAM  : ORIGIN = MON_SCRATCH_ADDR,  LENGTH = MON_SCRATCH_SIZE
+        /* 32MB of SDRAM.  */
+        SDRAM : ORIGIN = SDRAM_ADDR, LENGTH = SDRAM_SIZE
+}
+
+#ifdef CONFIG_RTE_CB_MA1_KSRAM
+# define KRAM SRAM
+#else
+# define KRAM SDRAM
+#endif
+
+SECTIONS {
+        /* We can't use RAMK_KRAM_CONTENTS because that puts the whole
+           kernel in a single ELF segment, and the Multi debugger (which
+           we use to load the kernel) appears to have bizarre problems
+           dealing with it.  */
+
+        .text : {
+                __kram_start = . ;
+                TEXT_CONTENTS
+        } > KRAM
+
+        .data : {
+                DATA_CONTENTS
+                BSS_CONTENTS
+                RAMK_INIT_CONTENTS
+                __kram_end = . ;
+                BOOTMAP_CONTENTS
+
+                /* The address at which the interrupt vectors are initially
+                   loaded by the loader.  We can't load the interrupt vectors
+                   directly into their target location, because the monitor
+                   ROM for the GHS Multi debugger barfs if we try.
+                   Unfortunately, Multi also doesn't deal correctly with ELF
+                   sections where the LMA and VMA differ (it just ignores the
+                   LMA), so we can't use that feature to work around the
+                   problem!  What we do instead is just put the interrupt
+                   vectors into a normal section, and have the
+                   `mach_early_init' function for Midas boards do the
+                   necessary copying and relocation at runtime (this section
+                   basically only contains `jr' instructions, so it's not
+                   that hard).  */
+                . = ALIGN (0x10) ;
+                __intv_load_start = . ;
+                INTV_CONTENTS
+        } > KRAM
+
+        .root ALIGN (4096) : { ROOT_FS_CONTENTS } > SDRAM
+}
diff --git a/arch/v850/kernel/rte_mb_a_pci.c b/arch/v850/kernel/rte_mb_a_pci.c
new file mode 100644
index 000000000000..074b50abc89d
--- /dev/null
+++ b/arch/v850/kernel/rte_mb_a_pci.c
@@ -0,0 +1,796 @@
+/*
+ * arch/v850/kernel/mb_a_pci.c -- PCI support for Midas lab RTE-MOTHER-A board
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/pci.h>
+
+#include <asm/machdep.h>
+
+/* __nomods_init is like __devinit, but is a no-op when modules are enabled.
+   This is used by some routines that can be called either during boot
+   or by a module.  */
+#ifdef CONFIG_MODULES
+#define __nomods_init /*nothing*/
+#else
+#define __nomods_init __devinit
+#endif
+
+/* PCI devices on the Mother-A board can only do DMA to/from the MB SRAM
+   (the RTE-V850E/MA1-CB cpu board doesn't support PCI access to
+   CPU-board memory), and since linux DMA buffers are allocated in
+   normal kernel memory, we basically have to copy DMA blocks around
+   (this is like a `bounce buffer').  When a DMA block is `mapped', we
+   allocate an identically sized block in MB SRAM, and if we're doing
+   output to the device, copy the CPU-memory block to the MB-SRAM block.
+   When an active block is `unmapped', we will copy the block back to
+   CPU memory if necessary, and then deallocate the MB SRAM block.
+   Ack.  */
+
+/* Where the motherboard SRAM is in the PCI-bus address space (the
+   first 512K of it is also mapped at PCI address 0).  */
+#define PCI_MB_SRAM_ADDR 0x800000
+
+/* Convert CPU-view MB SRAM address to/from PCI-view addresses of the
+   same memory.  */
+#define MB_SRAM_TO_PCI(mb_sram_addr) \
+   ((dma_addr_t)mb_sram_addr - MB_A_SRAM_ADDR + PCI_MB_SRAM_ADDR)
+#define PCI_TO_MB_SRAM(pci_addr)     \
+   (void *)(pci_addr - PCI_MB_SRAM_ADDR + MB_A_SRAM_ADDR)
+
+static void pcibios_assign_resources (void);
+
+struct mb_pci_dev_irq {
+        unsigned dev;           /* PCI device number */
+        unsigned irq_base;      /* First IRQ  */
+        unsigned query_pin;     /* True if we should read the device's
+                                   Interrupt Pin info, and allocate
+                                   interrupt IRQ_BASE + PIN.  */
+};
+
+/* PCI interrupts are mapped statically to GBUS interrupts.  */
+static struct mb_pci_dev_irq mb_pci_dev_irqs[] = {
+        /* Motherboard SB82558 ethernet controller */
+        { 10,   IRQ_MB_A_LAN,           0 },
+        /* PCI slot 1 */
+        { 8,    IRQ_MB_A_PCI1(0),       1 },
+        /* PCI slot 2 */
+        { 9,    IRQ_MB_A_PCI2(0),       1 }
+};
+#define NUM_MB_PCI_DEV_IRQS \
+  (sizeof mb_pci_dev_irqs / sizeof mb_pci_dev_irqs[0])
+
+
+/* PCI configuration primitives.  */
+
+#define CONFIG_DMCFGA(bus, devfn, offs)                                 \
+   (0x80000000                                                          \
+    | ((offs) & ~0x3)                                                   \
+    | ((devfn) << 8)                                                    \
+    | ((bus)->number << 16))
+
+static int
+mb_pci_read (struct pci_bus *bus, unsigned devfn, int offs, int size, u32 *rval)
+{
+        u32 addr;
+        int flags;
+
+        local_irq_save (flags);
+
+        MB_A_PCI_PCICR = 0x7;
+        MB_A_PCI_DMCFGA = CONFIG_DMCFGA (bus, devfn, offs);
+
+        addr = MB_A_PCI_IO_ADDR + (offs & 0x3);
+
+        switch (size) {
+        case 1: *rval = *(volatile  u8 *)addr; break;
+        case 2: *rval = *(volatile u16 *)addr; break;
+        case 4: *rval = *(volatile u32 *)addr; break;
+        }
+
+        if (MB_A_PCI_PCISR & 0x2000) {
+                MB_A_PCI_PCISR = 0x2000;
+                *rval = ~0;
+        }
+
+        MB_A_PCI_DMCFGA = 0;
+
+        local_irq_restore (flags);
+
+        return PCIBIOS_SUCCESSFUL;
+}
+
+static int
+mb_pci_write (struct pci_bus *bus, unsigned devfn, int offs, int size, u32 val)
+{
+        u32 addr;
+        int flags;
+
+        local_irq_save (flags);
+
+        MB_A_PCI_PCICR = 0x7;
+        MB_A_PCI_DMCFGA = CONFIG_DMCFGA (bus, devfn, offs);
+
+        addr = MB_A_PCI_IO_ADDR + (offs & 0x3);
+
+        switch (size) {
+        case 1: *(volatile  u8 *)addr = val; break;
+        case 2: *(volatile u16 *)addr = val; break;
+        case 4: *(volatile u32 *)addr = val; break;
+        }
+
+        if (MB_A_PCI_PCISR & 0x2000)
+                MB_A_PCI_PCISR = 0x2000;
+
+        MB_A_PCI_DMCFGA = 0;
+
+        local_irq_restore (flags);
+
+        return PCIBIOS_SUCCESSFUL;
+}
+
+static struct pci_ops mb_pci_config_ops = {
+        .read   = mb_pci_read,
+        .write  = mb_pci_write,
+};
+
+
+/* PCI Initialization.  */
+
+static struct pci_bus *mb_pci_bus = 0;
+
+/* Do initial PCI setup.  */
+static int __devinit pcibios_init (void)
+{
+        u32 id = MB_A_PCI_PCIHIDR;
+        u16 vendor = id & 0xFFFF;
+        u16 device = (id >> 16) & 0xFFFF;
+
+        if (vendor == PCI_VENDOR_ID_PLX && device == PCI_DEVICE_ID_PLX_9080) {
+                printk (KERN_INFO
+                        "PCI: PLX Technology PCI9080 HOST/PCI bridge\n");
+
+                MB_A_PCI_PCICR = 0x147;
+
+                MB_A_PCI_PCIBAR0 = 0x007FFF00;
+                MB_A_PCI_PCIBAR1 = 0x0000FF00;
+                MB_A_PCI_PCIBAR2 = 0x00800000;
+
+                MB_A_PCI_PCILTR = 0x20;
+
+                MB_A_PCI_PCIPBAM |= 0x3;
+
+                MB_A_PCI_PCISR =  ~0; /* Clear errors.  */
+
+                /* Reprogram the motherboard's IO/config address space,
+                   as we don't support the GCS7 address space that the
+                   default uses.  */
+
+                /* Significant address bits used for decoding PCI GCS5 space
+                   accessess.  */
+                MB_A_PCI_DMRR = ~(MB_A_PCI_MEM_SIZE - 1);
+
+                /* I don't understand this, but the SolutionGear example code
+                   uses such an offset, and it doesn't work without it.  XXX */
+#if GCS5_SIZE == 0x00800000
+#define GCS5_CFG_OFFS 0x00800000
+#else
+#define GCS5_CFG_OFFS 0
+#endif
+
+                /* Address bit values for matching.  Note that we have to give
+                   the address from the motherboard's point of view, which is
+                   different than the CPU's.  */
+                /* PCI memory space.  */
+                MB_A_PCI_DMLBAM = GCS5_CFG_OFFS + 0x0;
+                /* PCI I/O space.  */
+                MB_A_PCI_DMLBAI =
+                        GCS5_CFG_OFFS + (MB_A_PCI_IO_ADDR - GCS5_ADDR);
+
+                mb_pci_bus = pci_scan_bus (0, &mb_pci_config_ops, 0);
+
+                pcibios_assign_resources ();
+        } else
+                printk (KERN_ERR "PCI: HOST/PCI bridge not found\n");
+
+        return 0;
+}
+
+subsys_initcall (pcibios_init);
+
+char __devinit *pcibios_setup (char *option)
+{
+        /* Don't handle any options. */
+        return option;
+}
+
+
+int __nomods_init pcibios_enable_device (struct pci_dev *dev, int mask)
+{
+        u16 cmd, old_cmd;
+        int idx;
+        struct resource *r;
+
+        pci_read_config_word(dev, PCI_COMMAND, &cmd);
+        old_cmd = cmd;
+        for (idx = 0; idx < 6; idx++) {
+                r = &dev->resource[idx];
+                if (!r->start && r->end) {
+                        printk(KERN_ERR "PCI: Device %s not available because "
+                               "of resource collisions\n", pci_name(dev));
+                        return -EINVAL;
+                }
+                if (r->flags & IORESOURCE_IO)
+                        cmd |= PCI_COMMAND_IO;
+                if (r->flags & IORESOURCE_MEM)
+                        cmd |= PCI_COMMAND_MEMORY;
+        }
+        if (cmd != old_cmd) {
+                printk("PCI: Enabling device %s (%04x -> %04x)\n",
+                       pci_name(dev), old_cmd, cmd);
+                pci_write_config_word(dev, PCI_COMMAND, cmd);
+        }
+        return 0;
+}
+
+
+/* Resource allocation.  */
+static void __devinit pcibios_assign_resources (void)
+{
+        struct pci_dev *dev = NULL;
+        struct resource *r;
+
+        for_each_pci_dev(dev) {
+                unsigned di_num;
+                unsigned class = dev->class >> 8;
+
+                if (class && class != PCI_CLASS_BRIDGE_HOST) {
+                        unsigned r_num;
+                        for(r_num = 0; r_num < 6; r_num++) {
+                                r = &dev->resource[r_num];
+                                if (!r->start && r->end)
+                                        pci_assign_resource (dev, r_num);
+                        }
+                }
+
+                /* Assign interrupts.  */
+                for (di_num = 0; di_num < NUM_MB_PCI_DEV_IRQS; di_num++) {
+                        struct mb_pci_dev_irq *di = &mb_pci_dev_irqs[di_num];
+
+                        if (di->dev == PCI_SLOT (dev->devfn)) {
+                                unsigned irq = di->irq_base;
+
+                                if (di->query_pin) {
+                                        /* Find out which interrupt pin
+                                           this device uses (each PCI
+                                           slot has 4).  */
+                                        u8 irq_pin;
+
+                                        pci_read_config_byte (dev,
+                                                             PCI_INTERRUPT_PIN,
+                                                              &irq_pin);
+
+                                        if (irq_pin == 0)
+                                                /* Doesn't use interrupts.  */ 
+                                                continue;
+                                        else
+                                                irq += irq_pin - 1;
+                                }
+
+                                pcibios_update_irq (dev, irq);
+                        }
+                }
+        }
+}
+
+void __devinit pcibios_update_irq (struct pci_dev *dev, int irq)
+{
+        dev->irq = irq;
+        pci_write_config_byte (dev, PCI_INTERRUPT_LINE, irq);
+}
+
+void __devinit
+pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
+                        struct resource *res)
+{
+        unsigned long offset = 0;
+
+        if (res->flags & IORESOURCE_IO) {
+                offset = MB_A_PCI_IO_ADDR;
+        } else if (res->flags & IORESOURCE_MEM) {
+                offset = MB_A_PCI_MEM_ADDR;
+        }
+
+        region->start = res->start - offset;
+        region->end = res->end - offset;
+}
+
+
+/* Stubs for things we don't use.  */
+
+/* Called after each bus is probed, but before its children are examined. */
+void pcibios_fixup_bus(struct pci_bus *b)
+{
+}
+
+void
+pcibios_align_resource (void *data, struct resource *res,
+                        unsigned long size, unsigned long align)
+{
+}
+
+void pcibios_set_master (struct pci_dev *dev)
+{
+}
+
+
+/* Mother-A SRAM memory allocation.  This is a simple first-fit allocator.  */
+
+/* A memory free-list node.  */
+struct mb_sram_free_area {
+        void *mem;
+        unsigned long size;
+        struct mb_sram_free_area *next;
+};
+
+/* The tail of the free-list, which starts out containing all the SRAM.  */
+static struct mb_sram_free_area mb_sram_free_tail = {
+        (void *)MB_A_SRAM_ADDR, MB_A_SRAM_SIZE, 0
+};
+
+/* The free-list.  */
+static struct mb_sram_free_area *mb_sram_free_areas = &mb_sram_free_tail;
+
+/* The free-list of free free-list nodes. (:-)  */
+static struct mb_sram_free_area *mb_sram_free_free_areas = 0;
+
+/* Spinlock protecting the above globals.  */
+static DEFINE_SPINLOCK(mb_sram_lock);
+
+/* Allocate a memory block at least SIZE bytes long in the Mother-A SRAM
+   space.  */
+static void *alloc_mb_sram (size_t size)
+{
+        struct mb_sram_free_area *prev, *fa;
+        int flags;
+        void *mem = 0;
+
+        spin_lock_irqsave (mb_sram_lock, flags);
+
+        /* Look for a free area that can contain SIZE bytes.  */
+        for (prev = 0, fa = mb_sram_free_areas; fa; prev = fa, fa = fa->next)
+                if (fa->size >= size) {
+                        /* Found one!  */
+                        mem = fa->mem;
+
+                        if (fa->size == size) {
+                                /* In fact, it fits exactly, so remove
+                                   this node from the free-list.  */
+                                if (prev)
+                                        prev->next = fa->next;
+                                else
+                                        mb_sram_free_areas = fa->next;
+                                /* Put it on the free-list-entry-free-list. */
+                                fa->next = mb_sram_free_free_areas;
+                                mb_sram_free_free_areas = fa;
+                        } else {
+                                /* FA is bigger than SIZE, so just
+                                   reduce its size to account for this
+                                   allocation.  */
+                                fa->mem += size;
+                                fa->size -= size;
+                        }
+
+                        break;
+                }
+
+        spin_unlock_irqrestore (mb_sram_lock, flags);
+
+        return mem;
+}
+
+/* Return the memory area MEM of size SIZE to the MB SRAM free pool.  */
+static void free_mb_sram (void *mem, size_t size)
+{
+        struct mb_sram_free_area *prev, *fa, *new_fa;
+        int flags;
+        void *end = mem + size;
+
+        spin_lock_irqsave (mb_sram_lock, flags);
+
+ retry:
+        /* Find an adjacent free-list entry.  */
+        for (prev = 0, fa = mb_sram_free_areas; fa; prev = fa, fa = fa->next)
+                if (fa->mem == end) {
+                        /* FA is just after MEM, grow down to encompass it. */
+                        fa->mem = mem;
+                        fa->size += size;
+                        goto done;
+                } else if (fa->mem + fa->size == mem) {
+                        struct mb_sram_free_area *next_fa = fa->next;
+
+                        /* FA is just before MEM, expand to encompass it. */
+                        fa->size += size;
+
+                        /* See if FA can now be merged with its successor. */
+                        if (next_fa && fa->mem + fa->size == next_fa->mem) {
+                                /* Yup; merge NEXT_FA's info into FA.  */
+                                fa->size += next_fa->size;
+                                fa->next = next_fa->next;
+                                /* Free NEXT_FA.  */
+                                next_fa->next = mb_sram_free_free_areas;
+                                mb_sram_free_free_areas = next_fa;
+                        }
+                        goto done;
+                } else if (fa->mem > mem)
+                        /* We've reached the right spot in the free-list
+                           without finding an adjacent free-area, so add
+                           a new free area to hold mem. */
+                        break;
+
+        /* Make a new free-list entry.  */
+
+        /* First, get a free-list entry.  */
+        if (! mb_sram_free_free_areas) {
+                /* There are none, so make some.  */
+                void *block;
+                size_t block_size = sizeof (struct mb_sram_free_area) * 8;
+
+                /* Don't hold the lock while calling kmalloc (I'm not
+                   sure whether it would be a problem, since we use
+                   GFP_ATOMIC, but it makes me nervous).  */
+                spin_unlock_irqrestore (mb_sram_lock, flags);
+
+                block = kmalloc (block_size, GFP_ATOMIC);
+                if (! block)
+                        panic ("free_mb_sram: can't allocate free-list entry");
+
+                /* Now get the lock back.  */
+                spin_lock_irqsave (mb_sram_lock, flags);
+
+                /* Add the new free free-list entries.  */
+                while (block_size > 0) {
+                        struct mb_sram_free_area *nfa = block;
+                        nfa->next = mb_sram_free_free_areas;
+                        mb_sram_free_free_areas = nfa;
+                        block += sizeof *nfa;
+                        block_size -= sizeof *nfa;
+                }
+
+                /* Since we dropped the lock to call kmalloc, the
+                   free-list could have changed, so retry from the
+                   beginning.  */
+                goto retry;
+        }
+
+        /* Remove NEW_FA from the free-list of free-list entries.  */
+        new_fa = mb_sram_free_free_areas;
+        mb_sram_free_free_areas = new_fa->next;
+
+        /* NEW_FA initially holds only MEM.  */
+        new_fa->mem = mem;
+        new_fa->size = size;
+
+        /* Insert NEW_FA in the free-list between PREV and FA. */
+        new_fa->next = fa;
+        if (prev)
+                prev->next = new_fa;
+        else
+                mb_sram_free_areas = new_fa;
+
+ done:
+        spin_unlock_irqrestore (mb_sram_lock, flags);
+}
+
+
+/* Maintainence of CPU -> Mother-A DMA mappings.  */
+
+struct dma_mapping {
+        void *cpu_addr;
+        void *mb_sram_addr;
+        size_t size;
+        struct dma_mapping *next;
+};
+
+/* A list of mappings from CPU addresses to MB SRAM addresses for active
+   DMA blocks (that have been `granted' to the PCI device).  */
+static struct dma_mapping *active_dma_mappings = 0;
+
+/* A list of free mapping objects.  */
+static struct dma_mapping *free_dma_mappings = 0;
+
+/* Spinlock protecting the above globals.  */
+static DEFINE_SPINLOCK(dma_mappings_lock);
+
+static struct dma_mapping *new_dma_mapping (size_t size)
+{
+        int flags;
+        struct dma_mapping *mapping;
+        void *mb_sram_block = alloc_mb_sram (size);
+
+        if (! mb_sram_block)
+                return 0;
+
+        spin_lock_irqsave (dma_mappings_lock, flags);
+
+        if (! free_dma_mappings) {
+                /* We're out of mapping structures, make more.  */
+                void *mblock;
+                size_t mblock_size = sizeof (struct dma_mapping) * 8;
+
+                /* Don't hold the lock while calling kmalloc (I'm not
+                   sure whether it would be a problem, since we use
+                   GFP_ATOMIC, but it makes me nervous).  */
+                spin_unlock_irqrestore (dma_mappings_lock, flags);
+
+                mblock = kmalloc (mblock_size, GFP_ATOMIC);
+                if (! mblock) {
+                        free_mb_sram (mb_sram_block, size);
+                        return 0;
+                }
+
+                /* Get the lock back.  */
+                spin_lock_irqsave (dma_mappings_lock, flags);
+
+                /* Add the new mapping structures to the free-list.  */
+                while (mblock_size > 0) {
+                        struct dma_mapping *fm = mblock;
+                        fm->next = free_dma_mappings;
+                        free_dma_mappings = fm;
+                        mblock += sizeof *fm;
+                        mblock_size -= sizeof *fm;
+                }
+        }
+
+        /* Get a mapping struct from the freelist.  */
+        mapping = free_dma_mappings;
+        free_dma_mappings = mapping->next;
+
+        /* Initialize the mapping.  Other fields should be filled in by
+           caller.  */
+        mapping->mb_sram_addr = mb_sram_block;
+        mapping->size = size;
+
+        /* Add it to the list of active mappings.  */
+        mapping->next = active_dma_mappings;
+        active_dma_mappings = mapping;
+
+        spin_unlock_irqrestore (dma_mappings_lock, flags);
+
+        return mapping;
+}
+
+static struct dma_mapping *find_dma_mapping (void *mb_sram_addr)
+{
+        int flags;
+        struct dma_mapping *mapping;
+
+        spin_lock_irqsave (dma_mappings_lock, flags);
+
+        for (mapping = active_dma_mappings; mapping; mapping = mapping->next)
+                if (mapping->mb_sram_addr == mb_sram_addr) {
+                        spin_unlock_irqrestore (dma_mappings_lock, flags);
+                        return mapping;
+                }
+
+        panic ("find_dma_mapping: unmapped PCI DMA addr 0x%x",
+               MB_SRAM_TO_PCI (mb_sram_addr));
+}
+
+static struct dma_mapping *deactivate_dma_mapping (void *mb_sram_addr)
+{
+        int flags;
+        struct dma_mapping *mapping, *prev;
+
+        spin_lock_irqsave (dma_mappings_lock, flags);
+
+        for (prev = 0, mapping = active_dma_mappings;
+             mapping;
+             prev = mapping, mapping = mapping->next)
+        {
+                if (mapping->mb_sram_addr == mb_sram_addr) {
+                        /* This is the MAPPING; deactivate it.  */
+                        if (prev)
+                                prev->next = mapping->next;
+                        else
+                                active_dma_mappings = mapping->next;
+
+                        spin_unlock_irqrestore (dma_mappings_lock, flags);
+
+                        return mapping;
+                }
+        }
+
+        panic ("deactivate_dma_mapping: unmapped PCI DMA addr 0x%x",
+               MB_SRAM_TO_PCI (mb_sram_addr));
+}
+
+/* Return MAPPING to the freelist.  */
+static inline void
+free_dma_mapping (struct dma_mapping *mapping)
+{
+        int flags;
+
+        free_mb_sram (mapping->mb_sram_addr, mapping->size);
+
+        spin_lock_irqsave (dma_mappings_lock, flags);
+
+        mapping->next = free_dma_mappings;
+        free_dma_mappings = mapping;
+
+        spin_unlock_irqrestore (dma_mappings_lock, flags);
+}
+
+
+/* Single PCI DMA mappings.  */
+
+/* `Grant' to PDEV the memory block at CPU_ADDR, for doing DMA.  The
+   32-bit PCI bus mastering address to use is returned.  the device owns
+   this memory until either pci_unmap_single or pci_dma_sync_single is
+   performed.  */
+dma_addr_t
+pci_map_single (struct pci_dev *pdev, void *cpu_addr, size_t size, int dir)
+{
+        struct dma_mapping *mapping = new_dma_mapping (size);
+
+        if (! mapping)
+                return 0;
+
+        mapping->cpu_addr = cpu_addr;
+
+        if (dir == PCI_DMA_BIDIRECTIONAL || dir == PCI_DMA_TODEVICE)
+                memcpy (mapping->mb_sram_addr, cpu_addr, size);
+
+        return MB_SRAM_TO_PCI (mapping->mb_sram_addr);
+}
+
+/* Return to the CPU the PCI DMA memory block previously `granted' to
+   PDEV, at DMA_ADDR.  */
+void pci_unmap_single (struct pci_dev *pdev, dma_addr_t dma_addr, size_t size,
+                       int dir)
+{
+        void *mb_sram_addr = PCI_TO_MB_SRAM (dma_addr);
+        struct dma_mapping *mapping = deactivate_dma_mapping (mb_sram_addr);
+
+        if (size != mapping->size)
+                panic ("pci_unmap_single: size (%d) doesn't match"
+                       " size of mapping at PCI DMA addr 0x%x (%d)\n",
+                       size, dma_addr, mapping->size);
+
+        /* Copy back the DMA'd contents if necessary.  */
+        if (dir == PCI_DMA_BIDIRECTIONAL || dir == PCI_DMA_FROMDEVICE)
+                memcpy (mapping->cpu_addr, mb_sram_addr, size);
+
+        /* Return mapping to the freelist.  */
+        free_dma_mapping (mapping);
+}
+
+/* Make physical memory consistent for a single streaming mode DMA
+   translation after a transfer.
+
+   If you perform a pci_map_single() but wish to interrogate the
+   buffer using the cpu, yet do not wish to teardown the PCI dma
+   mapping, you must call this function before doing so.  At the next
+   point you give the PCI dma address back to the card, you must first
+   perform a pci_dma_sync_for_device, and then the device again owns
+   the buffer.  */
+void
+pci_dma_sync_single_for_cpu (struct pci_dev *pdev, dma_addr_t dma_addr, size_t size,
+                     int dir)
+{
+        void *mb_sram_addr = PCI_TO_MB_SRAM (dma_addr);
+        struct dma_mapping *mapping = find_dma_mapping (mb_sram_addr);
+
+        /* Synchronize the DMA buffer with the CPU buffer if necessary.  */
+        if (dir == PCI_DMA_FROMDEVICE)
+                memcpy (mapping->cpu_addr, mb_sram_addr, size);
+        else if (dir == PCI_DMA_TODEVICE)
+                ; /* nothing to do */
+        else
+                panic("pci_dma_sync_single: unsupported sync dir: %d", dir);
+}
+
+void
+pci_dma_sync_single_for_device (struct pci_dev *pdev, dma_addr_t dma_addr, size_t size,
+                                int dir)
+{
+        void *mb_sram_addr = PCI_TO_MB_SRAM (dma_addr);
+        struct dma_mapping *mapping = find_dma_mapping (mb_sram_addr);
+
+        /* Synchronize the DMA buffer with the CPU buffer if necessary.  */
+        if (dir == PCI_DMA_FROMDEVICE)
+                ; /* nothing to do */
+        else if (dir == PCI_DMA_TODEVICE)
+                memcpy (mb_sram_addr, mapping->cpu_addr, size);
+        else
+                panic("pci_dma_sync_single: unsupported sync dir: %d", dir);
+}
+
+
+/* Scatter-gather PCI DMA mappings.  */
+
+/* Do multiple DMA mappings at once.  */
+int
+pci_map_sg (struct pci_dev *pdev, struct scatterlist *sg, int sg_len, int dir)
+{
+        BUG ();
+        return 0;
+}
+
+/* Unmap multiple DMA mappings at once.  */
+void
+pci_unmap_sg (struct pci_dev *pdev, struct scatterlist *sg, int sg_len,int dir)
+{
+        BUG ();
+}
+
+/* Make physical memory consistent for a set of streaming mode DMA
+   translations after a transfer.  The same as pci_dma_sync_single_* but
+   for a scatter-gather list, same rules and usage.  */
+
+void
+pci_dma_sync_sg_for_cpu (struct pci_dev *dev, struct scatterlist *sg, int sg_len,
+                 int dir)
+{
+        BUG ();
+}
+
+void
+pci_dma_sync_sg_for_device (struct pci_dev *dev, struct scatterlist *sg, int sg_len,
+                 int dir)
+{
+        BUG ();
+}
+
+
+/* PCI mem mapping.  */
+
+/* Allocate and map kernel buffer using consistent mode DMA for PCI
+   device.  Returns non-NULL cpu-view pointer to the buffer if
+   successful and sets *DMA_ADDR to the pci side dma address as well,
+   else DMA_ADDR is undefined.  */
+void *
+pci_alloc_consistent (struct pci_dev *pdev, size_t size, dma_addr_t *dma_addr)
+{
+        void *mb_sram_mem = alloc_mb_sram (size);
+        if (mb_sram_mem)
+                *dma_addr = MB_SRAM_TO_PCI (mb_sram_mem);
+        return mb_sram_mem;
+}
+
+/* Free and unmap a consistent DMA buffer.  CPU_ADDR and DMA_ADDR must
+   be values that were returned from pci_alloc_consistent.  SIZE must be
+   the same as what as passed into pci_alloc_consistent.  References to
+   the memory and mappings assosciated with CPU_ADDR or DMA_ADDR past
+   this call are illegal.  */
+void
+pci_free_consistent (struct pci_dev *pdev, size_t size, void *cpu_addr,
+                     dma_addr_t dma_addr)
+{
+        void *mb_sram_mem = PCI_TO_MB_SRAM (dma_addr);
+        free_mb_sram (mb_sram_mem, size);
+}
+
+
+/* symbol exports (for modules) */
+
+EXPORT_SYMBOL (pci_map_single);
+EXPORT_SYMBOL (pci_unmap_single);
+EXPORT_SYMBOL (pci_alloc_consistent);
+EXPORT_SYMBOL (pci_free_consistent);
+EXPORT_SYMBOL (pci_dma_sync_single_for_cpu);
+EXPORT_SYMBOL (pci_dma_sync_single_for_device);
diff --git a/arch/v850/kernel/rte_me2_cb.c b/arch/v850/kernel/rte_me2_cb.c
new file mode 100644
index 000000000000..faaf3d95e6cf
--- /dev/null
+++ b/arch/v850/kernel/rte_me2_cb.c
@@ -0,0 +1,300 @@
+/*
+ * arch/v850/kernel/rte_me2_cb.c -- Midas labs RTE-V850E/ME2-CB board
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/bootmem.h>
+#include <linux/irq.h>
+#include <linux/fs.h>
+#include <linux/major.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+
+#include <asm/atomic.h>
+#include <asm/page.h>
+#include <asm/me2.h>
+#include <asm/rte_me2_cb.h>
+#include <asm/machdep.h>
+#include <asm/v850e_intc.h>
+#include <asm/v850e_cache.h>
+#include <asm/irq.h>
+
+#include "mach.h"
+
+extern unsigned long *_intv_start;
+extern unsigned long *_intv_end;
+
+/* LED access routines.  */
+extern unsigned read_leds (int pos, char *buf, int len);
+extern unsigned write_leds (int pos, const char *buf, int len);
+
+
+/* SDRAM are almost contiguous (with a small hole in between;
+   see mach_reserve_bootmem for details), so just use both as one big area.  */
+#define RAM_START       SDRAM_ADDR
+#define RAM_END         (SDRAM_ADDR + SDRAM_SIZE)
+
+
+void __init mach_get_physical_ram (unsigned long *ram_start,
+                                   unsigned long *ram_len)
+{
+        *ram_start = RAM_START;
+        *ram_len = RAM_END - RAM_START;
+}
+
+void mach_gettimeofday (struct timespec *tv)
+{
+        tv->tv_sec = 0;
+        tv->tv_nsec = 0;
+}
+
+/* Called before configuring an on-chip UART.  */
+void rte_me2_cb_uart_pre_configure (unsigned chan,
+                                    unsigned cflags, unsigned baud)
+{
+        /* The RTE-V850E/ME2-CB connects some general-purpose I/O
+           pins on the CPU to the RTS/CTS lines of UARTB channel 0's
+           serial connection.
+           I/O pins P21 and P22 are RTS and CTS respectively.  */
+        if (chan == 0) {
+                /* Put P21 & P22 in I/O port mode.  */
+                ME2_PORT2_PMC &= ~0x6;
+                /* Make P21 and output, and P22 an input.  */
+                ME2_PORT2_PM = (ME2_PORT2_PM & ~0xC) | 0x4;
+        }
+
+        me2_uart_pre_configure (chan, cflags, baud);
+}
+
+void __init mach_init_irqs (void)
+{
+        /* Initialize interrupts.  */
+        me2_init_irqs ();
+        rte_me2_cb_init_irqs ();
+}
+
+#ifdef CONFIG_ROM_KERNEL
+/* Initialization for kernel in ROM.  */
+static inline rom_kernel_init (void)
+{
+        /* If the kernel is in ROM, we have to copy any initialized data
+           from ROM into RAM.  */
+        extern unsigned long _data_load_start, _sdata, _edata;
+        register unsigned long *src = &_data_load_start;
+        register unsigned long *dst = &_sdata, *end = &_edata;
+
+        while (dst != end)
+                *dst++ = *src++;
+}
+#endif /* CONFIG_ROM_KERNEL */
+
+static void install_interrupt_vectors (void)
+{
+        unsigned long *p1, *p2;
+
+        ME2_IRAMM = 0x03; /* V850E/ME2 iRAM write mode */
+
+        /* vector copy to iRAM */
+        p1 = (unsigned long *)0; /* v85x vector start */
+        p2 = (unsigned long *)&_intv_start;
+        while (p2 < (unsigned long *)&_intv_end)
+                *p1++ = *p2++;
+
+        ME2_IRAMM = 0x00; /* V850E/ME2 iRAM read mode */
+}
+
+/* CompactFlash */
+
+static void cf_power_on (void)
+{
+        /* CF card detected? */
+        if (CB_CF_STS0 & 0x0030)
+                return;
+
+        CB_CF_REG0 = 0x0002; /* reest on */
+        mdelay (10);
+        CB_CF_REG0 = 0x0003; /* power on */
+        mdelay (10);
+        CB_CF_REG0 = 0x0001; /* reset off */
+        mdelay (10);
+}
+
+static void cf_power_off (void)
+{
+        CB_CF_REG0 = 0x0003; /* power on */
+        mdelay (10);
+        CB_CF_REG0 = 0x0002; /* reest on */
+        mdelay (10);
+}
+
+void __init mach_early_init (void)
+{
+        install_interrupt_vectors ();
+
+        /* CS1 SDRAM instruction cache enable */
+        v850e_cache_enable (0x04, 0x03, 0);
+
+        rte_cb_early_init ();
+
+        /* CompactFlash power on */
+        cf_power_on ();
+
+#if defined (CONFIG_ROM_KERNEL)
+        rom_kernel_init ();
+#endif
+}
+
+
+/* RTE-V850E/ME2-CB Programmable Interrupt Controller.  */
+
+static struct cb_pic_irq_init cb_pic_irq_inits[] = {
+        { "CB_EXTTM0",       IRQ_CB_EXTTM0,       1, 1, 6 },
+        { "CB_EXTSIO",       IRQ_CB_EXTSIO,       1, 1, 6 },
+        { "CB_TOVER",        IRQ_CB_TOVER,        1, 1, 6 },
+        { "CB_GINT0",        IRQ_CB_GINT0,        1, 1, 6 },
+        { "CB_USB",          IRQ_CB_USB,          1, 1, 6 },
+        { "CB_LANC",         IRQ_CB_LANC,         1, 1, 6 },
+        { "CB_USB_VBUS_ON",  IRQ_CB_USB_VBUS_ON,  1, 1, 6 },
+        { "CB_USB_VBUS_OFF", IRQ_CB_USB_VBUS_OFF, 1, 1, 6 },
+        { "CB_EXTTM1",       IRQ_CB_EXTTM1,       1, 1, 6 },
+        { "CB_EXTTM2",       IRQ_CB_EXTTM2,       1, 1, 6 },
+        { 0 }
+};
+#define NUM_CB_PIC_IRQ_INITS  \
+   ((sizeof cb_pic_irq_inits / sizeof cb_pic_irq_inits[0]) - 1)
+
+static struct hw_interrupt_type cb_pic_hw_itypes[NUM_CB_PIC_IRQ_INITS];
+static unsigned char cb_pic_active_irqs = 0;
+
+void __init rte_me2_cb_init_irqs (void)
+{
+        cb_pic_init_irq_types (cb_pic_irq_inits, cb_pic_hw_itypes);
+
+        /* Initalize on board PIC1 (not PIC0) enable */
+        CB_PIC_INT0M  = 0x0000;
+        CB_PIC_INT1M  = 0x0000;
+        CB_PIC_INTR   = 0x0000;
+        CB_PIC_INTEN |= CB_PIC_INT1EN;
+
+        ME2_PORT2_PMC    |= 0x08;       /* INTP23/SCK1 mode */
+        ME2_PORT2_PFC    &= ~0x08;      /* INTP23 mode */
+        ME2_INTR(2)      &= ~0x08;      /* INTP23 falling-edge detect */
+        ME2_INTF(2)      &= ~0x08;      /*   " */
+
+        rte_cb_init_irqs ();    /* gbus &c */
+}
+
+
+/* Enable interrupt handling for interrupt IRQ.  */
+void cb_pic_enable_irq (unsigned irq)
+{
+        CB_PIC_INT1M |= 1 << (irq - CB_PIC_BASE_IRQ);
+}
+
+void cb_pic_disable_irq (unsigned irq)
+{
+        CB_PIC_INT1M &= ~(1 << (irq - CB_PIC_BASE_IRQ));
+}
+
+void cb_pic_shutdown_irq (unsigned irq)
+{
+        cb_pic_disable_irq (irq);
+
+        if (--cb_pic_active_irqs == 0)
+                free_irq (IRQ_CB_PIC, 0);
+
+        CB_PIC_INT1M &= ~(1 << (irq - CB_PIC_BASE_IRQ));
+}
+
+static irqreturn_t cb_pic_handle_irq (int irq, void *dev_id,
+                                      struct pt_regs *regs)
+{
+        irqreturn_t rval = IRQ_NONE;
+        unsigned status = CB_PIC_INTR;
+        unsigned enable = CB_PIC_INT1M;
+
+        /* Only pay attention to enabled interrupts.  */
+        status &= enable;
+
+        CB_PIC_INTEN &= ~CB_PIC_INT1EN;
+
+        if (status) {
+                unsigned mask = 1;
+
+                irq = CB_PIC_BASE_IRQ;
+                do {
+                        /* There's an active interrupt, find out which one,
+                           and call its handler.  */
+                        while (! (status & mask)) {
+                                irq++;
+                                mask <<= 1;
+                        }
+                        status &= ~mask;
+
+                        CB_PIC_INTR = mask;
+
+                        /* Recursively call handle_irq to handle it. */
+                        handle_irq (irq, regs);
+                        rval = IRQ_HANDLED;
+                } while (status);
+        }
+
+        CB_PIC_INTEN |= CB_PIC_INT1EN;
+
+        return rval;
+}
+
+
+static void irq_nop (unsigned irq) { }
+
+static unsigned cb_pic_startup_irq (unsigned irq)
+{
+        int rval;
+
+        if (cb_pic_active_irqs == 0) {
+                rval = request_irq (IRQ_CB_PIC, cb_pic_handle_irq,
+                                    SA_INTERRUPT, "cb_pic_handler", 0);
+                if (rval != 0)
+                        return rval;
+        }
+
+        cb_pic_active_irqs++;
+
+        cb_pic_enable_irq (irq);
+
+        return 0;
+}
+
+/* Initialize HW_IRQ_TYPES for INTC-controlled irqs described in array
+   INITS (which is terminated by an entry with the name field == 0).  */
+void __init cb_pic_init_irq_types (struct cb_pic_irq_init *inits,
+                                   struct hw_interrupt_type *hw_irq_types)
+{
+        struct cb_pic_irq_init *init;
+        for (init = inits; init->name; init++) {
+                struct hw_interrupt_type *hwit = hw_irq_types++;
+
+                hwit->typename = init->name;
+
+                hwit->startup  = cb_pic_startup_irq;
+                hwit->shutdown = cb_pic_shutdown_irq;
+                hwit->enable   = cb_pic_enable_irq;
+                hwit->disable  = cb_pic_disable_irq;
+                hwit->ack      = irq_nop;
+                hwit->end      = irq_nop;
+
+                /* Initialize kernel IRQ infrastructure for this interrupt.  */
+                init_irq_handlers(init->base, init->num, init->interval, hwit);
+        }
+}
diff --git a/arch/v850/kernel/rte_me2_cb.ld b/arch/v850/kernel/rte_me2_cb.ld
new file mode 100644
index 000000000000..cf0766065ec6
--- /dev/null
+++ b/arch/v850/kernel/rte_me2_cb.ld
@@ -0,0 +1,30 @@
+/* Linker script for the Midas labs RTE-V850E/ME2-CB evaluation board
+   (CONFIG_RTE_CB_ME2), with kernel in SDRAM.  */
+
+MEMORY {
+        /* 128Kbyte of IRAM */
+        IRAM : ORIGIN = 0x00000000, LENGTH = 0x00020000
+
+        /* 32MB of SDRAM.  */
+        SDRAM : ORIGIN = SDRAM_ADDR, LENGTH = SDRAM_SIZE
+}
+
+#define KRAM SDRAM
+
+SECTIONS {
+        .text : {
+                __kram_start = . ;
+                TEXT_CONTENTS
+                INTV_CONTENTS   /* copy to iRAM (0x0-0x620) */
+        } > KRAM
+
+        .data : {
+                DATA_CONTENTS
+                BSS_CONTENTS
+                RAMK_INIT_CONTENTS
+                __kram_end = . ;
+                BOOTMAP_CONTENTS
+        } > KRAM
+        
+        .root ALIGN (4096) : { ROOT_FS_CONTENTS } > SDRAM
+}
diff --git a/arch/v850/kernel/rte_nb85e_cb-multi.ld b/arch/v850/kernel/rte_nb85e_cb-multi.ld
new file mode 100644
index 000000000000..de347b4fffac
--- /dev/null
+++ b/arch/v850/kernel/rte_nb85e_cb-multi.ld
@@ -0,0 +1,57 @@
+/* Linker script for the Midas labs RTE-NB85E-CB evaluation board
+   (CONFIG_RTE_CB_NB85E), with the Multi debugger ROM monitor .  */
+
+MEMORY {
+        /* 1MB of SRAM; we can't use the last 96KB, because it's used by
+           the monitor scratch-RAM.  This memory is mirrored 4 times.  */
+        SRAM  : ORIGIN = SRAM_ADDR,  LENGTH = (SRAM_SIZE - MON_SCRATCH_SIZE)
+        /* Monitor scratch RAM; only the interrupt vectors should go here.  */
+        MRAM  : ORIGIN = MON_SCRATCH_ADDR,  LENGTH = MON_SCRATCH_SIZE
+        /* 16MB of SDRAM.  */
+        SDRAM : ORIGIN = SDRAM_ADDR, LENGTH = SDRAM_SIZE
+}
+
+#ifdef CONFIG_RTE_CB_NB85E_KSRAM
+# define KRAM SRAM
+#else
+# define KRAM SDRAM
+#endif
+
+SECTIONS {
+        /* We can't use RAMK_KRAM_CONTENTS because that puts the whole
+           kernel in a single ELF segment, and the Multi debugger (which
+           we use to load the kernel) appears to have bizarre problems
+           dealing with it.  */
+
+        .text : {
+                __kram_start = . ;
+                TEXT_CONTENTS
+        } > KRAM
+
+        .data : {
+                DATA_CONTENTS
+                BSS_CONTENTS
+                RAMK_INIT_CONTENTS
+                __kram_end = . ;
+                BOOTMAP_CONTENTS
+
+                /* The address at which the interrupt vectors are initially
+                   loaded by the loader.  We can't load the interrupt vectors
+                   directly into their target location, because the monitor
+                   ROM for the GHS Multi debugger barfs if we try.
+                   Unfortunately, Multi also doesn't deal correctly with ELF
+                   sections where the LMA and VMA differ (it just ignores the
+                   LMA), so we can't use that feature to work around the
+                   problem!  What we do instead is just put the interrupt
+                   vectors into a normal section, and have the
+                   `mach_early_init' function for Midas boards do the
+                   necessary copying and relocation at runtime (this section
+                   basically only contains `jr' instructions, so it's not
+                   that hard).  */
+                . = ALIGN (0x10) ;
+                __intv_load_start = . ;
+                INTV_CONTENTS
+        } > KRAM
+
+        .root ALIGN (4096) : { ROOT_FS_CONTENTS } > SDRAM
+}
diff --git a/arch/v850/kernel/rte_nb85e_cb.c b/arch/v850/kernel/rte_nb85e_cb.c
new file mode 100644
index 000000000000..990b20bffe47
--- /dev/null
+++ b/arch/v850/kernel/rte_nb85e_cb.c
@@ -0,0 +1,82 @@
+/*
+ * arch/v850/kernel/rte_nb85e_cb.c -- Midas labs RTE-V850E/NB85E-CB board
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/swap.h>
+#include <linux/bootmem.h>
+#include <linux/irq.h>
+
+#include <asm/atomic.h>
+#include <asm/page.h>
+#include <asm/v850e.h>
+#include <asm/rte_nb85e_cb.h>
+
+#include "mach.h"
+
+void __init mach_early_init (void)
+{
+        /* Configure caching; some possible settings:
+
+             BHC = 0x0000, DCC = 0x0000  -- all caching disabled
+             BHC = 0x0040, DCC = 0x0000  -- SDRAM: icache only
+             BHC = 0x0080, DCC = 0x0C00  -- SDRAM: write-back dcache only
+             BHC = 0x00C0, DCC = 0x0C00  -- SDRAM: icache + write-back dcache
+             BHC = 0x00C0, DCC = 0x0800  -- SDRAM: icache + write-thru dcache
+
+           We can only cache SDRAM (we can't use cache SRAM because it's in
+           the same memory region as the on-chip RAM and I/O space).
+
+           Unfortunately, the dcache seems to be buggy, so we only use the
+           icache for now.  */
+        v850e_cache_enable (0x0040 /*BHC*/, 0x0003 /*ICC*/, 0x0000 /*DCC*/);
+
+        rte_cb_early_init ();
+}
+
+void __init mach_get_physical_ram (unsigned long *ram_start,
+                                   unsigned long *ram_len)
+{
+        /* We just use SDRAM here.  */
+        *ram_start = SDRAM_ADDR;
+        *ram_len = SDRAM_SIZE;
+}
+
+void mach_gettimeofday (struct timespec *tv)
+{
+        tv->tv_sec = 0;
+        tv->tv_nsec = 0;
+}
+
+/* Called before configuring an on-chip UART.  */
+void rte_nb85e_cb_uart_pre_configure (unsigned chan,
+                                    unsigned cflags, unsigned baud)
+{
+        /* The RTE-NB85E-CB connects some general-purpose I/O pins on the
+           CPU to the RTS/CTS lines the UART's serial connection, as follows:
+           P00 = CTS (in), P01 = DSR (in), P02 = RTS (out), P03 = DTR (out). */
+
+        TEG_PORT0_PM = 0x03;    /* P00 and P01 inputs, P02 and P03 outputs */
+        TEG_PORT0_IO = 0x03;    /* Accept input */
+
+        /* Do pre-configuration for the actual UART.  */
+        teg_uart_pre_configure (chan, cflags, baud);
+}
+
+void __init mach_init_irqs (void)
+{
+        teg_init_irqs ();
+        rte_cb_init_irqs ();
+}
diff --git a/arch/v850/kernel/rte_nb85e_cb.ld b/arch/v850/kernel/rte_nb85e_cb.ld
new file mode 100644
index 000000000000..b672f484f085
--- /dev/null
+++ b/arch/v850/kernel/rte_nb85e_cb.ld
@@ -0,0 +1,22 @@
+/* Linker script for the Midas labs RTE-NB85E-CB evaluation board
+   (CONFIG_RTE_CB_NB85E).  */
+
+MEMORY {
+        LOW   : ORIGIN = 0x0,        LENGTH = 0x00100000
+        /* 1MB of SRAM  This memory is mirrored 4 times.  */
+        SRAM  : ORIGIN = SRAM_ADDR,  LENGTH = SRAM_SIZE
+        /* 16MB of SDRAM.  */
+        SDRAM : ORIGIN = SDRAM_ADDR, LENGTH = SDRAM_SIZE
+}
+
+#ifdef CONFIG_RTE_CB_NB85E_KSRAM
+# define KRAM SRAM
+#else
+# define KRAM SDRAM
+#endif
+
+SECTIONS {
+        .intv : { INTV_CONTENTS } > LOW
+        .sram : { RAMK_KRAM_CONTENTS } > KRAM
+        .root : { ROOT_FS_CONTENTS } > SDRAM
+}
diff --git a/arch/v850/kernel/semaphore.c b/arch/v850/kernel/semaphore.c
new file mode 100644
index 000000000000..fc89fd661c99
--- /dev/null
+++ b/arch/v850/kernel/semaphore.c
@@ -0,0 +1,166 @@
+/*
+ * arch/v850/kernel/semaphore.c -- Semaphore support
+ *
+ *  Copyright (C) 1998-2000  IBM Corporation
+ *  Copyright (C) 1999  Linus Torvalds
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * This file is a copy of the s390 version, arch/s390/kernel/semaphore.c
+ *    Author(s): Martin Schwidefsky
+ * which was derived from the i386 version, linux/arch/i386/kernel/semaphore.c
+ */
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+
+#include <asm/semaphore.h>
+
+/*
+ * Semaphores are implemented using a two-way counter:
+ * The "count" variable is decremented for each process
+ * that tries to acquire the semaphore, while the "sleeping"
+ * variable is a count of such acquires.
+ *
+ * Notably, the inline "up()" and "down()" functions can
+ * efficiently test if they need to do any extra work (up
+ * needs to do something only if count was negative before
+ * the increment operation.
+ *
+ * "sleeping" and the contention routine ordering is
+ * protected by the semaphore spinlock.
+ *
+ * Note that these functions are only called when there is
+ * contention on the lock, and as such all this is the
+ * "non-critical" part of the whole semaphore business. The
+ * critical part is the inline stuff in <asm/semaphore.h>
+ * where we want to avoid any extra jumps and calls.
+ */
+
+/*
+ * Logic:
+ *  - only on a boundary condition do we need to care. When we go
+ *    from a negative count to a non-negative, we wake people up.
+ *  - when we go from a non-negative count to a negative do we
+ *    (a) synchronize with the "sleeper" count and (b) make sure
+ *    that we're on the wakeup list before we synchronize so that
+ *    we cannot lose wakeup events.
+ */
+
+void __up(struct semaphore *sem)
+{
+        wake_up(&sem->wait);
+}
+
+static DEFINE_SPINLOCK(semaphore_lock);
+
+void __sched __down(struct semaphore * sem)
+{
+        struct task_struct *tsk = current;
+        DECLARE_WAITQUEUE(wait, tsk);
+        tsk->state = TASK_UNINTERRUPTIBLE;
+        add_wait_queue_exclusive(&sem->wait, &wait);
+
+        spin_lock_irq(&semaphore_lock);
+        sem->sleepers++;
+        for (;;) {
+                int sleepers = sem->sleepers;
+
+                /*
+                 * Add "everybody else" into it. They aren't
+                 * playing, because we own the spinlock.
+                 */
+                if (!atomic_add_negative(sleepers - 1, &sem->count)) {
+                        sem->sleepers = 0;
+                        break;
+                }
+                sem->sleepers = 1;      /* us - see -1 above */
+                spin_unlock_irq(&semaphore_lock);
+
+                schedule();
+                tsk->state = TASK_UNINTERRUPTIBLE;
+                spin_lock_irq(&semaphore_lock);
+        }
+        spin_unlock_irq(&semaphore_lock);
+        remove_wait_queue(&sem->wait, &wait);
+        tsk->state = TASK_RUNNING;
+        wake_up(&sem->wait);
+}
+
+int __sched __down_interruptible(struct semaphore * sem)
+{
+        int retval = 0;
+        struct task_struct *tsk = current;
+        DECLARE_WAITQUEUE(wait, tsk);
+        tsk->state = TASK_INTERRUPTIBLE;
+        add_wait_queue_exclusive(&sem->wait, &wait);
+
+        spin_lock_irq(&semaphore_lock);
+        sem->sleepers ++;
+        for (;;) {
+                int sleepers = sem->sleepers;
+
+                /*
+                 * With signals pending, this turns into
+                 * the trylock failure case - we won't be
+                 * sleeping, and we* can't get the lock as
+                 * it has contention. Just correct the count
+                 * and exit.
+                 */
+                if (signal_pending(current)) {
+                        retval = -EINTR;
+                        sem->sleepers = 0;
+                        atomic_add(sleepers, &sem->count);
+                        break;
+                }
+
+                /*
+                 * Add "everybody else" into it. They aren't
+                 * playing, because we own the spinlock. The
+                 * "-1" is because we're still hoping to get
+                 * the lock.
+                 */
+                if (!atomic_add_negative(sleepers - 1, &sem->count)) {
+                        sem->sleepers = 0;
+                        break;
+                }
+                sem->sleepers = 1;      /* us - see -1 above */
+                spin_unlock_irq(&semaphore_lock);
+
+                schedule();
+                tsk->state = TASK_INTERRUPTIBLE;
+                spin_lock_irq(&semaphore_lock);
+        }
+        spin_unlock_irq(&semaphore_lock);
+        tsk->state = TASK_RUNNING;
+        remove_wait_queue(&sem->wait, &wait);
+        wake_up(&sem->wait);
+        return retval;
+}
+
+/*
+ * Trylock failed - make sure we correct for
+ * having decremented the count.
+ */
+int __down_trylock(struct semaphore * sem)
+{
+        unsigned long flags;
+        int sleepers;
+
+        spin_lock_irqsave(&semaphore_lock, flags);
+        sleepers = sem->sleepers + 1;
+        sem->sleepers = 0;
+
+        /*
+         * Add "everybody else" and us into it. They aren't
+         * playing, because we own the spinlock.
+         */
+        if (!atomic_add_negative(sleepers, &sem->count))
+                wake_up(&sem->wait);
+
+        spin_unlock_irqrestore(&semaphore_lock, flags);
+        return 1;
+}
diff --git a/arch/v850/kernel/setup.c b/arch/v850/kernel/setup.c
new file mode 100644
index 000000000000..c41d72b01b88
--- /dev/null
+++ b/arch/v850/kernel/setup.c
@@ -0,0 +1,286 @@
+/*
+ * arch/v850/kernel/setup.c -- Arch-dependent initialization functions
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/mm.h>
+#include <linux/bootmem.h>
+#include <linux/swap.h>         /* we don't have swap, but for nr_free_pages */
+#include <linux/irq.h>
+#include <linux/reboot.h>
+#include <linux/personality.h>
+#include <linux/major.h>
+#include <linux/root_dev.h>
+#include <linux/mtd/mtd.h>
+#include <linux/init.h>
+
+#include <asm/irq.h>
+#include <asm/setup.h>
+
+#include "mach.h"
+
+/* These symbols are all defined in the linker map to delineate various
+   statically allocated regions of memory.  */
+
+extern char _intv_start, _intv_end;
+/* `kram' is only used if the kernel uses part of normal user RAM.  */
+extern char _kram_start __attribute__ ((__weak__));
+extern char _kram_end __attribute__ ((__weak__));
+extern char _init_start, _init_end;
+extern char _bootmap;
+extern char _stext, _etext, _sdata, _edata, _sbss, _ebss;
+/* Many platforms use an embedded root image.  */
+extern char _root_fs_image_start __attribute__ ((__weak__));
+extern char _root_fs_image_end __attribute__ ((__weak__));
+
+
+char command_line[COMMAND_LINE_SIZE];
+
+/* Memory not used by the kernel.  */
+static unsigned long total_ram_pages;
+
+/* System RAM.  */
+static unsigned long ram_start = 0, ram_len = 0;
+
+
+#define ADDR_TO_PAGE_UP(x)   ((((unsigned long)x) + PAGE_SIZE-1) >> PAGE_SHIFT)
+#define ADDR_TO_PAGE(x)      (((unsigned long)x) >> PAGE_SHIFT)
+#define PAGE_TO_ADDR(x)      (((unsigned long)x) << PAGE_SHIFT)
+
+static void init_mem_alloc (unsigned long ram_start, unsigned long ram_len);
+
+void set_mem_root (void *addr, size_t len, char *cmd_line);
+
+
+void __init setup_arch (char **cmdline)
+{
+        /* Keep a copy of command line */
+        *cmdline = command_line;
+        memcpy (saved_command_line, command_line, COMMAND_LINE_SIZE);
+        saved_command_line[COMMAND_LINE_SIZE - 1] = '\0';
+
+        console_verbose ();
+
+        init_mm.start_code = (unsigned long) &_stext;
+        init_mm.end_code = (unsigned long) &_etext;
+        init_mm.end_data = (unsigned long) &_edata;
+        init_mm.brk = (unsigned long) &_kram_end;
+
+        /* Find out what mem this machine has.  */
+        mach_get_physical_ram (&ram_start, &ram_len);
+        /* ... and tell the kernel about it.  */
+        init_mem_alloc (ram_start, ram_len);
+
+        printk (KERN_INFO "CPU: %s\nPlatform: %s\n",
+                CPU_MODEL_LONG, PLATFORM_LONG);
+
+        /* do machine-specific setups.  */
+        mach_setup (cmdline);
+
+#ifdef CONFIG_MTD
+        if (!ROOT_DEV && &_root_fs_image_end > &_root_fs_image_start)
+                set_mem_root (&_root_fs_image_start,
+                              &_root_fs_image_end - &_root_fs_image_start,
+                              *cmdline);
+#endif
+}
+
+void __init trap_init (void)
+{
+}
+
+#ifdef CONFIG_MTD
+/* Set the root filesystem to be the given memory region.
+   Some parameter may be appended to CMD_LINE.  */
+void set_mem_root (void *addr, size_t len, char *cmd_line)
+{
+        /* The only way to pass info to the MTD slram driver is via
+           the command line.  */
+        if (*cmd_line) {
+                cmd_line += strlen (cmd_line);
+                *cmd_line++ = ' ';
+        }
+        sprintf (cmd_line, "slram=root,0x%x,+0x%x", (u32)addr, (u32)len);
+
+        ROOT_DEV = MKDEV (MTD_BLOCK_MAJOR, 0);
+}
+#endif
+
+
+static void irq_nop (unsigned irq) { }
+static unsigned irq_zero (unsigned irq) { return 0; }
+
+static void nmi_end (unsigned irq)
+{
+        if (irq != IRQ_NMI (0)) {
+                printk (KERN_CRIT "NMI %d is unrecoverable; restarting...",
+                        irq - IRQ_NMI (0));
+                machine_restart (0);
+        }
+}
+
+static struct hw_interrupt_type nmi_irq_type = {
+        "NMI",
+        irq_zero,               /* startup */
+        irq_nop,                /* shutdown */
+        irq_nop,                /* enable */
+        irq_nop,                /* disable */
+        irq_nop,                /* ack */
+        nmi_end,                /* end */
+};
+
+void __init init_IRQ (void)
+{
+        init_irq_handlers (0, NUM_MACH_IRQS, 1, 0);
+        init_irq_handlers (IRQ_NMI (0), NUM_NMIS, 1, &nmi_irq_type);
+        mach_init_irqs ();
+}
+
+
+void __init mem_init (void)
+{
+        max_mapnr = MAP_NR (ram_start + ram_len);
+
+        num_physpages = ADDR_TO_PAGE (ram_len);
+
+        total_ram_pages = free_all_bootmem ();
+
+        printk (KERN_INFO
+                "Memory: %luK/%luK available"
+                " (%luK kernel code, %luK data)\n",
+                PAGE_TO_ADDR (nr_free_pages()) / 1024,
+                ram_len / 1024,
+                ((unsigned long)&_etext - (unsigned long)&_stext) / 1024,
+                ((unsigned long)&_ebss - (unsigned long)&_sdata) / 1024);
+}
+
+void free_initmem (void)
+{
+        unsigned long ram_end = ram_start + ram_len;
+        unsigned long start = PAGE_ALIGN ((unsigned long)(&_init_start));
+
+        if (start >= ram_start && start < ram_end) {
+                unsigned long addr;
+                unsigned long end = PAGE_ALIGN ((unsigned long)(&_init_end));
+
+                if (end > ram_end)
+                        end = ram_end;
+
+                printk("Freeing unused kernel memory: %ldK freed\n",
+                       (end - start) / 1024);
+
+                for (addr = start; addr < end; addr += PAGE_SIZE) {
+                        struct page *page = virt_to_page (addr);
+                        ClearPageReserved (page);
+                        set_page_count (page, 1);
+                        __free_page (page);
+                        total_ram_pages++;
+                }
+        }
+}
+
+
+/* Initialize the `bootmem allocator'.  RAM_START and RAM_LEN identify
+   what RAM may be used.  */
+static void __init
+init_bootmem_alloc (unsigned long ram_start, unsigned long ram_len)
+{
+        /* The part of the kernel that's in the same managed RAM space
+           used for general allocation.  */
+        unsigned long kram_start = (unsigned long)&_kram_start;
+        unsigned long kram_end = (unsigned long)&_kram_end;
+        /* End of the managed RAM space.  */
+        unsigned long ram_end = ram_start + ram_len;
+        /* Address range of the interrupt vector table.  */
+        unsigned long intv_start = (unsigned long)&_intv_start;
+        unsigned long intv_end = (unsigned long)&_intv_end;
+        /* True if the interrupt vectors are in the managed RAM area.  */
+        int intv_in_ram = (intv_end > ram_start && intv_start < ram_end);
+        /* True if the interrupt vectors are inside the kernel's RAM.  */
+        int intv_in_kram = (intv_end > kram_start && intv_start < kram_end);
+        /* A pointer to an optional function that reserves platform-specific
+           memory regions.  We declare the pointer `volatile' to avoid gcc
+           turning the call into a static call (the problem is that since
+           it's a weak symbol, a static call may end up trying to reference
+           the location 0x0, which is not always reachable).  */
+        void (*volatile mrb) (void) = mach_reserve_bootmem;
+        /* The bootmem allocator's allocation bitmap.  */
+        unsigned long bootmap = (unsigned long)&_bootmap;
+        unsigned long bootmap_len;
+
+        /* Round bootmap location up to next page.  */
+        bootmap = PAGE_TO_ADDR (ADDR_TO_PAGE_UP (bootmap));
+
+        /* Initialize bootmem allocator.  */
+        bootmap_len = init_bootmem_node (NODE_DATA (0),
+                                         ADDR_TO_PAGE (bootmap),
+                                         ADDR_TO_PAGE (PAGE_OFFSET),
+                                         ADDR_TO_PAGE (ram_end));
+
+        /* Now make the RAM actually allocatable (it starts out `reserved'). */
+        free_bootmem (ram_start, ram_len);
+
+        if (kram_end > kram_start)
+                /* Reserve the RAM part of the kernel's address space, so it
+                   doesn't get allocated.  */
+                reserve_bootmem (kram_start, kram_end - kram_start);
+        
+        if (intv_in_ram && !intv_in_kram)
+                /* Reserve the interrupt vector space.  */
+                reserve_bootmem (intv_start, intv_end - intv_start);
+
+        if (bootmap >= ram_start && bootmap < ram_end)
+                /* Reserve the bootmap space.  */
+                reserve_bootmem (bootmap, bootmap_len);
+
+        /* Reserve the memory used by the root filesystem image if it's
+           in RAM.  */
+        if (&_root_fs_image_end > &_root_fs_image_start
+            && (unsigned long)&_root_fs_image_start >= ram_start
+            && (unsigned long)&_root_fs_image_start < ram_end)
+                reserve_bootmem ((unsigned long)&_root_fs_image_start,
+                                 &_root_fs_image_end - &_root_fs_image_start);
+
+        /* Let the platform-dependent code reserve some too.  */
+        if (mrb)
+                (*mrb) ();
+}
+
+/* Tell the kernel about what RAM it may use for memory allocation.  */
+static void __init
+init_mem_alloc (unsigned long ram_start, unsigned long ram_len)
+{
+        unsigned i;
+        unsigned long zones_size[MAX_NR_ZONES];
+
+        init_bootmem_alloc (ram_start, ram_len);
+
+        for (i = 0; i < MAX_NR_ZONES; i++)
+                zones_size[i] = 0;
+
+        /* We stuff all the memory into one area, which includes the
+           initial gap from PAGE_OFFSET to ram_start.  */
+        zones_size[ZONE_DMA]
+                = ADDR_TO_PAGE (ram_len + (ram_start - PAGE_OFFSET));
+
+        /* The allocator is very picky about the address of the first
+           allocatable page -- it must be at least as aligned as the
+           maximum allocation -- so try to detect cases where it will get
+           confused and signal them at compile time (this is a common
+           problem when porting to a new platform with ).  There is a
+           similar runtime check in free_area_init_core.  */
+#if ((PAGE_OFFSET >> PAGE_SHIFT) & ((1UL << (MAX_ORDER - 1)) - 1))
+#error MAX_ORDER is too large for given PAGE_OFFSET (use CONFIG_FORCE_MAX_ZONEORDER to change it)
+#endif
+        NODE_DATA(0)->node_mem_map = NULL;
+        free_area_init_node (0, NODE_DATA(0), zones_size,
+                             ADDR_TO_PAGE (PAGE_OFFSET), 0);
+}
diff --git a/arch/v850/kernel/signal.c b/arch/v850/kernel/signal.c
new file mode 100644
index 000000000000..37061e32e1a4
--- /dev/null
+++ b/arch/v850/kernel/signal.c
@@ -0,0 +1,525 @@
+/*
+ * arch/v850/kernel/signal.c -- Signal handling
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *  Copyright (C) 1999,2000,2002  Niibe Yutaka & Kaz Kojima
+ *  Copyright (C) 1991,1992  Linus Torvalds
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * 1997-11-28  Modified for POSIX.1b signals by Richard Henderson
+ *
+ * This file was derived from the sh version, arch/sh/kernel/signal.c
+ */
+
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/errno.h>
+#include <linux/wait.h>
+#include <linux/ptrace.h>
+#include <linux/unistd.h>
+#include <linux/stddef.h>
+#include <linux/personality.h>
+#include <linux/tty.h>
+
+#include <asm/ucontext.h>
+#include <asm/uaccess.h>
+#include <asm/pgtable.h>
+#include <asm/pgalloc.h>
+#include <asm/thread_info.h>
+#include <asm/cacheflush.h>
+
+#define DEBUG_SIG 0
+
+#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
+
+asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset);
+
+/*
+ * Atomically swap in the new signal mask, and wait for a signal.
+ */
+asmlinkage int
+sys_sigsuspend(old_sigset_t mask, struct pt_regs *regs)
+{
+        sigset_t saveset;
+
+        mask &= _BLOCKABLE;
+        spin_lock_irq(&current->sighand->siglock);
+        saveset = current->blocked;
+        siginitset(&current->blocked, mask);
+        recalc_sigpending();
+        spin_unlock_irq(&current->sighand->siglock);
+
+        regs->gpr[GPR_RVAL] = -EINTR;
+        while (1) {
+                current->state = TASK_INTERRUPTIBLE;
+                schedule();
+                if (do_signal(regs, &saveset))
+                        return -EINTR;
+        }
+}
+
+asmlinkage int
+sys_rt_sigsuspend(sigset_t *unewset, size_t sigsetsize,
+                  struct pt_regs *regs)
+{
+        sigset_t saveset, newset;
+
+        /* XXX: Don't preclude handling different sized sigset_t's.  */
+        if (sigsetsize != sizeof(sigset_t))
+                return -EINVAL;
+
+        if (copy_from_user(&newset, unewset, sizeof(newset)))
+                return -EFAULT;
+        sigdelsetmask(&newset, ~_BLOCKABLE);
+        spin_lock_irq(&current->sighand->siglock);
+        saveset = current->blocked;
+        current->blocked = newset;
+        recalc_sigpending();
+        spin_unlock_irq(&current->sighand->siglock);
+
+        regs->gpr[GPR_RVAL] = -EINTR;
+        while (1) {
+                current->state = TASK_INTERRUPTIBLE;
+                schedule();
+                if (do_signal(regs, &saveset))
+                        return -EINTR;
+        }
+}
+
+asmlinkage int 
+sys_sigaction(int sig, const struct old_sigaction *act,
+              struct old_sigaction *oact)
+{
+        struct k_sigaction new_ka, old_ka;
+        int ret;
+
+        if (act) {
+                old_sigset_t mask;
+                if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
+                    __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
+                    __get_user(new_ka.sa.sa_restorer, &act->sa_restorer))
+                        return -EFAULT;
+                __get_user(new_ka.sa.sa_flags, &act->sa_flags);
+                __get_user(mask, &act->sa_mask);
+                siginitset(&new_ka.sa.sa_mask, mask);
+        }
+
+        ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+        if (!ret && oact) {
+                if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
+                    __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
+                    __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer))
+                        return -EFAULT;
+                __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
+                __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
+        }
+
+        return ret;
+}
+
+asmlinkage int
+sys_sigaltstack(const stack_t *uss, stack_t *uoss,
+                struct pt_regs *regs)
+{
+        return do_sigaltstack(uss, uoss, regs->gpr[GPR_SP]);
+}
+
+
+/*
+ * Do a signal return; undo the signal stack.
+ */
+
+struct sigframe
+{
+        struct sigcontext sc;
+        unsigned long extramask[_NSIG_WORDS-1];
+        unsigned long tramp[2]; /* signal trampoline */
+};
+
+struct rt_sigframe
+{
+        struct siginfo info;
+        struct ucontext uc;
+        unsigned long tramp[2]; /* signal trampoline */
+};
+
+static int
+restore_sigcontext(struct pt_regs *regs, struct sigcontext *sc, int *rval_p)
+{
+        unsigned int err = 0;
+
+#define COPY(x)         err |= __get_user(regs->x, &sc->regs.x)
+        COPY(gpr[0]);   COPY(gpr[1]);   COPY(gpr[2]);   COPY(gpr[3]);
+        COPY(gpr[4]);   COPY(gpr[5]);   COPY(gpr[6]);   COPY(gpr[7]);
+        COPY(gpr[8]);   COPY(gpr[9]);   COPY(gpr[10]);  COPY(gpr[11]);
+        COPY(gpr[12]);  COPY(gpr[13]);  COPY(gpr[14]);  COPY(gpr[15]);
+        COPY(gpr[16]);  COPY(gpr[17]);  COPY(gpr[18]);  COPY(gpr[19]);
+        COPY(gpr[20]);  COPY(gpr[21]);  COPY(gpr[22]);  COPY(gpr[23]);
+        COPY(gpr[24]);  COPY(gpr[25]);  COPY(gpr[26]);  COPY(gpr[27]);
+        COPY(gpr[28]);  COPY(gpr[29]);  COPY(gpr[30]);  COPY(gpr[31]);
+        COPY(pc);       COPY(psw);
+        COPY(ctpc);     COPY(ctpsw);    COPY(ctbp);
+#undef COPY
+
+        return err;
+}
+
+asmlinkage int sys_sigreturn(struct pt_regs *regs)
+{
+        struct sigframe *frame = (struct sigframe *)regs->gpr[GPR_SP];
+        sigset_t set;
+        int rval;
+
+        if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+                goto badframe;
+
+        if (__get_user(set.sig[0], &frame->sc.oldmask)
+            || (_NSIG_WORDS > 1
+                && __copy_from_user(&set.sig[1], &frame->extramask,
+                                    sizeof(frame->extramask))))
+                goto badframe;
+
+        sigdelsetmask(&set, ~_BLOCKABLE);
+        spin_lock_irq(&current->sighand->siglock);
+        current->blocked = set;
+        recalc_sigpending();
+        spin_unlock_irq(&current->sighand->siglock);
+
+        if (restore_sigcontext(regs, &frame->sc, &rval))
+                goto badframe;
+        return rval;
+
+badframe:
+        force_sig(SIGSEGV, current);
+        return 0;
+}
+
+asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
+{
+        struct rt_sigframe *frame = (struct rt_sigframe *)regs->gpr[GPR_SP];
+        sigset_t set;
+        stack_t st;
+        int rval;
+
+        if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+                goto badframe;
+
+        if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
+                goto badframe;
+
+        sigdelsetmask(&set, ~_BLOCKABLE);
+        spin_lock_irq(&current->sighand->siglock);
+        current->blocked = set;
+        recalc_sigpending();
+        spin_unlock_irq(&current->sighand->siglock);
+
+        if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &rval))
+                goto badframe;
+
+        if (__copy_from_user(&st, &frame->uc.uc_stack, sizeof(st)))
+                goto badframe;
+        /* It is more difficult to avoid calling this function than to
+           call it and ignore errors.  */
+        do_sigaltstack(&st, NULL, regs->gpr[GPR_SP]);
+
+        return rval;
+
+badframe:
+        force_sig(SIGSEGV, current);
+        return 0;
+}       
+
+/*
+ * Set up a signal frame.
+ */
+
+static int
+setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs,
+                 unsigned long mask)
+{
+        int err = 0;
+
+#define COPY(x)         err |= __put_user(regs->x, &sc->regs.x)
+        COPY(gpr[0]);   COPY(gpr[1]);   COPY(gpr[2]);   COPY(gpr[3]);
+        COPY(gpr[4]);   COPY(gpr[5]);   COPY(gpr[6]);   COPY(gpr[7]);
+        COPY(gpr[8]);   COPY(gpr[9]);   COPY(gpr[10]);  COPY(gpr[11]);
+        COPY(gpr[12]);  COPY(gpr[13]);  COPY(gpr[14]);  COPY(gpr[15]);
+        COPY(gpr[16]);  COPY(gpr[17]);  COPY(gpr[18]);  COPY(gpr[19]);
+        COPY(gpr[20]);  COPY(gpr[21]);  COPY(gpr[22]);  COPY(gpr[23]);
+        COPY(gpr[24]);  COPY(gpr[25]);  COPY(gpr[26]);  COPY(gpr[27]);
+        COPY(gpr[28]);  COPY(gpr[29]);  COPY(gpr[30]);  COPY(gpr[31]);
+        COPY(pc);       COPY(psw);
+        COPY(ctpc);     COPY(ctpsw);    COPY(ctbp);
+#undef COPY
+
+        err |= __put_user(mask, &sc->oldmask);
+
+        return err;
+}
+
+/*
+ * Determine which stack to use..
+ */
+static inline void *
+get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)
+{
+        /* Default to using normal stack */
+        unsigned long sp = regs->gpr[GPR_SP];
+
+        if ((ka->sa.sa_flags & SA_ONSTACK) != 0 && ! on_sig_stack(sp))
+                sp = current->sas_ss_sp + current->sas_ss_size;
+
+        return (void *)((sp - frame_size) & -8UL);
+}
+
+static void setup_frame(int sig, struct k_sigaction *ka,
+                        sigset_t *set, struct pt_regs *regs)
+{
+        struct sigframe *frame;
+        int err = 0;
+        int signal;
+
+        frame = get_sigframe(ka, regs, sizeof(*frame));
+
+        if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
+                goto give_sigsegv;
+
+        signal = current_thread_info()->exec_domain
+                && current_thread_info()->exec_domain->signal_invmap
+                && sig < 32
+                ? current_thread_info()->exec_domain->signal_invmap[sig]
+                : sig;
+
+        err |= setup_sigcontext(&frame->sc, regs, set->sig[0]);
+
+        if (_NSIG_WORDS > 1) {
+                err |= __copy_to_user(frame->extramask, &set->sig[1],
+                                      sizeof(frame->extramask));
+        }
+
+        /* Set up to return from userspace.  If provided, use a stub
+           already in userspace.  */
+        if (ka->sa.sa_flags & SA_RESTORER) {
+                regs->gpr[GPR_LP] = (unsigned long) ka->sa.sa_restorer;
+        } else {
+                /* Note, these encodings are _little endian_!  */
+
+                /* addi  __NR_sigreturn, r0, r12  */
+                err |= __put_user(0x6600 | (__NR_sigreturn << 16),
+                                  frame->tramp + 0);
+                /* trap 0 */
+                err |= __put_user(0x010007e0,
+                                  frame->tramp + 1);
+
+                regs->gpr[GPR_LP] = (unsigned long)frame->tramp;
+
+                flush_cache_sigtramp (regs->gpr[GPR_LP]);
+        }
+
+        if (err)
+                goto give_sigsegv;
+
+        /* Set up registers for signal handler.  */
+        regs->pc = (v850_reg_t) ka->sa.sa_handler;
+        regs->gpr[GPR_SP] = (v850_reg_t)frame;
+        /* Signal handler args:  */
+        regs->gpr[GPR_ARG0] = signal; /* arg 0: signum */
+        regs->gpr[GPR_ARG1] = (v850_reg_t)&frame->sc;/* arg 1: sigcontext */
+
+        set_fs(USER_DS);
+
+#if DEBUG_SIG
+        printk("SIG deliver (%s:%d): sp=%p pc=%08lx ra=%08lx\n",
+                current->comm, current->pid, frame, regs->pc, );
+#endif
+
+        return;
+
+give_sigsegv:
+        force_sigsegv(sig, current);
+}
+
+static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
+                           sigset_t *set, struct pt_regs *regs)
+{
+        struct rt_sigframe *frame;
+        int err = 0;
+        int signal;
+
+        frame = get_sigframe(ka, regs, sizeof(*frame));
+
+        if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
+                goto give_sigsegv;
+
+        signal = current_thread_info()->exec_domain
+                && current_thread_info()->exec_domain->signal_invmap
+                && sig < 32
+                ? current_thread_info()->exec_domain->signal_invmap[sig]
+                : sig;
+
+        err |= copy_siginfo_to_user(&frame->info, info);
+
+        /* Create the ucontext.  */
+        err |= __put_user(0, &frame->uc.uc_flags);
+        err |= __put_user(0, &frame->uc.uc_link);
+        err |= __put_user((void *)current->sas_ss_sp,
+                          &frame->uc.uc_stack.ss_sp);
+        err |= __put_user(sas_ss_flags(regs->gpr[GPR_SP]),
+                          &frame->uc.uc_stack.ss_flags);
+        err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
+        err |= setup_sigcontext(&frame->uc.uc_mcontext,
+                                regs, set->sig[0]);
+        err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
+
+        /* Set up to return from userspace.  If provided, use a stub
+           already in userspace.  */
+        if (ka->sa.sa_flags & SA_RESTORER) {
+                regs->gpr[GPR_LP] = (unsigned long) ka->sa.sa_restorer;
+        } else {
+                /* Note, these encodings are _little endian_!  */
+
+                /* addi  __NR_sigreturn, r0, r12  */
+                err |= __put_user(0x6600 | (__NR_sigreturn << 16),
+                                  frame->tramp + 0);
+                /* trap 0 */
+                err |= __put_user(0x010007e0,
+                                  frame->tramp + 1);
+
+                regs->gpr[GPR_LP] = (unsigned long)frame->tramp;
+
+                flush_cache_sigtramp (regs->gpr[GPR_LP]);
+        }
+
+        if (err)
+                goto give_sigsegv;
+
+        /* Set up registers for signal handler.  */
+        regs->pc = (v850_reg_t) ka->sa.sa_handler;
+        regs->gpr[GPR_SP] = (v850_reg_t)frame;
+        /* Signal handler args:  */
+        regs->gpr[GPR_ARG0] = signal; /* arg 0: signum */
+        regs->gpr[GPR_ARG1] = (v850_reg_t)&frame->info; /* arg 1: siginfo */
+        regs->gpr[GPR_ARG2] = (v850_reg_t)&frame->uc; /* arg 2: ucontext */
+
+        set_fs(USER_DS);
+
+#if DEBUG_SIG
+        printk("SIG deliver (%s:%d): sp=%p pc=%08lx pr=%08lx\n",
+                current->comm, current->pid, frame, regs->pc, regs->pr);
+#endif
+
+        return;
+
+give_sigsegv:
+        force_sigsegv(sig, current);
+}
+
+/*
+ * OK, we're invoking a handler
+ */     
+
+static void
+handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
+              sigset_t *oldset, struct pt_regs * regs)
+{
+        /* Are we from a system call? */
+        if (PT_REGS_SYSCALL (regs)) {
+                /* If so, check system call restarting.. */
+                switch (regs->gpr[GPR_RVAL]) {
+                case -ERESTART_RESTARTBLOCK:
+                        current_thread_info()->restart_block.fn =
+                                do_no_restart_syscall;
+                        /* fall through */
+                case -ERESTARTNOHAND:
+                        regs->gpr[GPR_RVAL] = -EINTR;
+                        break;
+
+                case -ERESTARTSYS:
+                        if (!(ka->sa.sa_flags & SA_RESTART)) {
+                                regs->gpr[GPR_RVAL] = -EINTR;
+                                break;
+                        }
+                        /* fallthrough */
+                case -ERESTARTNOINTR:
+                        regs->gpr[12] = PT_REGS_SYSCALL (regs);
+                        regs->pc -= 4; /* Size of `trap 0' insn.  */
+                }
+
+                PT_REGS_SET_SYSCALL (regs, 0);
+        }
+
+        /* Set up the stack frame */
+        if (ka->sa.sa_flags & SA_SIGINFO)
+                setup_rt_frame(sig, ka, info, oldset, regs);
+        else
+                setup_frame(sig, ka, oldset, regs);
+
+        if (!(ka->sa.sa_flags & SA_NODEFER)) {
+                spin_lock_irq(&current->sighand->siglock);
+                sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
+                sigaddset(&current->blocked,sig);
+                recalc_sigpending();
+                spin_unlock_irq(&current->sighand->siglock);
+        }
+}
+
+/*
+ * Note that 'init' is a special process: it doesn't get signals it doesn't
+ * want to handle. Thus you cannot kill init even with a SIGKILL even by
+ * mistake.
+ *
+ * Note that we go through the signals twice: once to check the signals that
+ * the kernel can handle, and then we build all the user-level signal handling
+ * stack-frames in one go after that.
+ */
+int do_signal(struct pt_regs *regs, sigset_t *oldset)
+{
+        siginfo_t info;
+        int signr;
+        struct k_sigaction ka;
+
+        /*
+         * We want the common case to go fast, which
+         * is why we may in certain cases get here from
+         * kernel mode. Just return without doing anything
+         * if so.
+         */
+        if (!user_mode(regs))
+                return 1;
+
+        if (!oldset)
+                oldset = &current->blocked;
+
+        signr = get_signal_to_deliver(&info, &ka, regs, NULL);
+        if (signr > 0) {
+                /* Whee!  Actually deliver the signal.  */
+                handle_signal(signr, &info, &ka, oldset, regs);
+                return 1;
+        }
+
+        /* Did we come from a system call? */
+        if (PT_REGS_SYSCALL (regs)) {
+                int rval = (int)regs->gpr[GPR_RVAL];
+                /* Restart the system call - no handlers present */
+                if (rval == -ERESTARTNOHAND
+                    || rval == -ERESTARTSYS
+                    || rval == -ERESTARTNOINTR)
+                {
+                        regs->gpr[12] = PT_REGS_SYSCALL (regs);
+                        regs->pc -= 4; /* Size of `trap 0' insn.  */
+                }
+                else if (rval == -ERESTART_RESTARTBLOCK) {
+                        regs->gpr[12] = __NR_restart_syscall;
+                        regs->pc -= 4; /* Size of `trap 0' insn.  */
+                }
+        }
+        return 0;
+}
diff --git a/arch/v850/kernel/sim.c b/arch/v850/kernel/sim.c
new file mode 100644
index 000000000000..4f31da962632
--- /dev/null
+++ b/arch/v850/kernel/sim.c
@@ -0,0 +1,179 @@
+/*
+ * arch/v850/kernel/sim.c -- Machine-specific stuff for GDB v850e simulator
+ *
+ *  Copyright (C) 2001,02  NEC Corporation
+ *  Copyright (C) 2001,02  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/swap.h>
+#include <linux/bootmem.h>
+#include <linux/irq.h>
+
+#include <asm/atomic.h>
+#include <asm/page.h>
+#include <asm/machdep.h>
+#include <asm/simsyscall.h>
+
+#include "mach.h"
+
+/* The name of a file containing the root filesystem.  */
+#define ROOT_FS "rootfs.image"
+
+extern void simcons_setup (void);
+extern void simcons_poll_ttys (void);
+extern void set_mem_root (void *addr, size_t len, char *cmd_line);
+
+static int read_file (const char *name,
+                      unsigned long *addr, unsigned long *len,
+                      const char **err);
+
+void __init mach_setup (char **cmdline)
+{
+        const char *err;
+        unsigned long root_dev_addr, root_dev_len;
+
+        simcons_setup ();
+
+        printk (KERN_INFO "Reading root filesystem: %s", ROOT_FS);
+
+        if (read_file (ROOT_FS, &root_dev_addr, &root_dev_len, &err)) {
+                printk (" (size %luK)\n", root_dev_len / 1024);
+                set_mem_root ((void *)root_dev_addr, (size_t)root_dev_len,
+                              *cmdline);
+        } else
+                printk ("...%s failed!\n", err);
+}
+
+void mach_get_physical_ram (unsigned long *ram_start, unsigned long *ram_len)
+{
+        *ram_start = RAM_ADDR;
+        *ram_len = RAM_SIZE;
+}
+
+void __init mach_sched_init (struct irqaction *timer_action)
+{
+        /* ...do magic timer initialization?...  */
+        mach_tick = simcons_poll_ttys;
+        setup_irq (0, timer_action);
+}
+
+
+static void irq_nop (unsigned irq) { }
+static unsigned irq_zero (unsigned irq) { return 0; }
+
+static struct hw_interrupt_type sim_irq_type = {
+        "IRQ",
+        irq_zero,               /* startup */
+        irq_nop,                /* shutdown */
+        irq_nop,                /* enable */
+        irq_nop,                /* disable */
+        irq_nop,                /* ack */
+        irq_nop,                /* end */
+};
+
+void __init mach_init_irqs (void)
+{
+        init_irq_handlers (0, NUM_MACH_IRQS, 1, &sim_irq_type);
+}
+
+
+void mach_gettimeofday (struct timespec *tv)
+{
+        long timeval[2], timezone[2];
+        int rval = V850_SIM_SYSCALL (gettimeofday, timeval, timezone);
+        if (rval == 0) {
+                tv->tv_sec = timeval[0];
+                tv->tv_nsec = timeval[1] * 1000;
+        }
+}
+
+void machine_restart (char *__unused)
+{
+        V850_SIM_SYSCALL (write, 1, "RESTART\n", 8);
+        V850_SIM_SYSCALL (exit, 0);
+}
+
+EXPORT_SYMBOL(machine_restart);
+
+void machine_halt (void)
+{
+        V850_SIM_SYSCALL (write, 1, "HALT\n", 5);
+        V850_SIM_SYSCALL (exit, 0);
+}
+
+EXPORT_SYMBOL(machine_halt);
+
+void machine_power_off (void)
+{
+        V850_SIM_SYSCALL (write, 1, "POWER OFF\n", 10);
+        V850_SIM_SYSCALL (exit, 0);
+}
+
+EXPORT_SYMBOL(machine_power_off);
+
+
+/* Load data from a file called NAME into ram.  The address and length
+   of the data image are returned in ADDR and LEN.  */
+static int __init
+read_file (const char *name,
+           unsigned long *addr, unsigned long *len,
+           const char **err)
+{
+        int rval, fd;
+        unsigned long cur, left;
+        /* Note this is not a normal stat buffer, it's an ad-hoc
+           structure defined by the simulator.  */
+        unsigned long stat_buf[10];
+
+        /* Stat the file to find out the length.  */
+        rval = V850_SIM_SYSCALL (stat, name, stat_buf);
+        if (rval < 0) {
+                if (err) *err = "stat";
+                return 0;
+        }
+        *len = stat_buf[4];
+
+        /* Open the file; `0' is O_RDONLY.  */
+        fd = V850_SIM_SYSCALL (open, name, 0);
+        if (fd < 0) {
+                if (err) *err = "open";
+                return 0;
+        }
+
+        *addr = (unsigned long)alloc_bootmem(*len);
+        if (! *addr) {
+                V850_SIM_SYSCALL (close, fd);
+                if (err) *err = "alloc_bootmem";
+                return 0;
+        }
+
+        cur = *addr;
+        left = *len;
+        while (left > 0) {
+                int chunk = V850_SIM_SYSCALL (read, fd, cur, left);
+                if (chunk <= 0)
+                        break;
+                cur += chunk;
+                left -= chunk;
+        }
+        V850_SIM_SYSCALL (close, fd);
+        if (left > 0) {
+                /* Some read failed.  */
+                free_bootmem (*addr, *len);
+                if (err) *err = "read";
+                return 0;
+        }
+
+        return 1;
+}
diff --git a/arch/v850/kernel/sim.ld b/arch/v850/kernel/sim.ld
new file mode 100644
index 000000000000..101885f3c9f0
--- /dev/null
+++ b/arch/v850/kernel/sim.ld
@@ -0,0 +1,13 @@
+/* Linker script for the gdb v850e simulator (CONFIG_V850E_SIM).  */
+
+MEMORY {
+        /* Interrupt vectors.  */
+        INTV  : ORIGIN = 0x0, LENGTH = 0xe0
+        /* Main RAM.  */
+        RAM   : ORIGIN = RAM_ADDR, LENGTH = RAM_SIZE
+}
+
+SECTIONS {
+        .intv : { INTV_CONTENTS } > INTV
+        .ram : { RAMK_KRAM_CONTENTS } > RAM
+}
diff --git a/arch/v850/kernel/sim85e2.c b/arch/v850/kernel/sim85e2.c
new file mode 100644
index 000000000000..93a722b516bb
--- /dev/null
+++ b/arch/v850/kernel/sim85e2.c
@@ -0,0 +1,201 @@
+/*
+ * arch/v850/kernel/sim85e2.c -- Machine-specific stuff for
+ *      V850E2 RTL simulator
+ *
+ *  Copyright (C) 2002,03  NEC Electronics Corporation
+ *  Copyright (C) 2002,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/swap.h>
+#include <linux/bootmem.h>
+#include <linux/irq.h>
+
+#include <asm/atomic.h>
+#include <asm/page.h>
+#include <asm/machdep.h>
+
+#include "mach.h"
+
+
+/* There are 4 possible areas we can use:
+
+     IRAM (1MB) is fast for instruction fetches, but slow for data
+     DRAM (1020KB) is fast for data, but slow for instructions
+     ERAM is cached, so should be fast for both insns and data
+     SDRAM is external DRAM, similar to ERAM
+*/
+
+#define INIT_MEMC_FOR_SDRAM
+#define USE_SDRAM_AREA
+#define KERNEL_IN_SDRAM_AREA
+
+#define DCACHE_MODE     V850E2_CACHE_BTSC_DCM_WT
+/*#define DCACHE_MODE   V850E2_CACHE_BTSC_DCM_WB_ALLOC*/
+
+#ifdef USE_SDRAM_AREA
+#define RAM_START       SDRAM_ADDR
+#define RAM_END         (SDRAM_ADDR + SDRAM_SIZE)
+#else
+/* When we use DRAM, we need to account for the fact that the end of it is
+   used for R0_RAM.  */
+#define RAM_START       DRAM_ADDR
+#define RAM_END         R0_RAM_ADDR
+#endif
+
+
+extern void memcons_setup (void);
+
+
+#ifdef KERNEL_IN_SDRAM_AREA
+#define EARLY_INIT_SECTION_ATTR __attribute__ ((section (".early.text")))
+#else
+#define EARLY_INIT_SECTION_ATTR __init
+#endif
+
+void EARLY_INIT_SECTION_ATTR mach_early_init (void)
+{
+        /* The sim85e2 simulator tracks `undefined' values, so to make
+           debugging easier, we begin by zeroing out all otherwise
+           undefined registers.  This is not strictly necessary.
+
+           The registers we zero are:
+               Every GPR except:
+                   stack-pointer (r3)
+                   task-pointer (r16)
+                   our return addr (r31)
+               Every system register (SPR) that we know about except for
+               the PSW (SPR 5), which we zero except for the
+               disable-interrupts bit.
+        */
+
+        /* GPRs */
+        asm volatile ("             mov r0, r1 ; mov r0, r2              ");
+        asm volatile ("mov r0, r4 ; mov r0, r5 ; mov r0, r6 ; mov r0, r7 ");
+        asm volatile ("mov r0, r8 ; mov r0, r9 ; mov r0, r10; mov r0, r11");
+        asm volatile ("mov r0, r12; mov r0, r13; mov r0, r14; mov r0, r15");
+        asm volatile ("             mov r0, r17; mov r0, r18; mov r0, r19");
+        asm volatile ("mov r0, r20; mov r0, r21; mov r0, r22; mov r0, r23");
+        asm volatile ("mov r0, r24; mov r0, r25; mov r0, r26; mov r0, r27");
+        asm volatile ("mov r0, r28; mov r0, r29; mov r0, r30");
+
+        /* SPRs */
+        asm volatile ("ldsr r0, 0;  ldsr r0, 1;  ldsr r0, 2;  ldsr r0, 3");
+        asm volatile ("ldsr r0, 4");
+        asm volatile ("addi 0x20, r0, r1; ldsr r1, 5"); /* PSW */
+        asm volatile ("ldsr r0, 16; ldsr r0, 17; ldsr r0, 18; ldsr r0, 19");
+        asm volatile ("ldsr r0, 20");
+
+
+#ifdef INIT_MEMC_FOR_SDRAM
+        /* Settings for SDRAM controller.  */
+        V850E2_VSWC   = 0x0042;
+        V850E2_BSC    = 0x9286;
+        V850E2_BCT(0) = 0xb000; /* was: 0 */
+        V850E2_BCT(1) = 0x000b;
+        V850E2_ASC    = 0;
+        V850E2_LBS    = 0xa9aa; /* was: 0xaaaa */
+        V850E2_LBC(0) = 0;
+        V850E2_LBC(1) = 0;      /* was: 0x3 */
+        V850E2_BCC    = 0;
+        V850E2_RFS(4) = 0x800a; /* was: 0xf109 */
+        V850E2_SCR(4) = 0x2091; /* was: 0x20a1 */
+        V850E2_RFS(3) = 0x800c;
+        V850E2_SCR(3) = 0x20a1;
+        V850E2_DWC(0) = 0;
+        V850E2_DWC(1) = 0;
+#endif
+
+#if 0
+#ifdef CONFIG_V850E2_SIM85E2S
+        /* Turn on the caches.  */
+        V850E2_CACHE_BTSC = V850E2_CACHE_BTSC_ICM | DCACHE_MODE;
+        V850E2_BHC  = 0x1010;
+#elif CONFIG_V850E2_SIM85E2C
+        V850E2_CACHE_BTSC |= (V850E2_CACHE_BTSC_ICM | V850E2_CACHE_BTSC_DCM0);
+        V850E2_BUSM_BHC = 0xFFFF;
+#endif
+#else
+        V850E2_BHC  = 0;
+#endif
+
+        /* Don't stop the simulator at `halt' instructions.  */
+        SIM85E2_NOTHAL = 1;
+
+        /* Ensure that the simulator halts on a panic, instead of going
+           into an infinite loop inside the panic function.  */
+        panic_timeout = -1;
+}
+
+void __init mach_setup (char **cmdline)
+{
+        memcons_setup ();
+}
+
+void mach_get_physical_ram (unsigned long *ram_start, unsigned long *ram_len)
+{
+        *ram_start = RAM_START;
+        *ram_len = RAM_END - RAM_START;
+}
+
+void __init mach_sched_init (struct irqaction *timer_action)
+{
+        /* The simulator actually cycles through all interrupts
+           periodically.  We just pay attention to IRQ0, which gives us
+           1/64 the rate of the periodic interrupts.  */
+        setup_irq (0, timer_action);
+}
+
+void mach_gettimeofday (struct timespec *tv)
+{
+        tv->tv_sec = 0;
+        tv->tv_nsec = 0;
+}
+
+/* Interrupts */
+
+struct v850e_intc_irq_init irq_inits[] = {
+        { "IRQ", 0, NUM_MACH_IRQS, 1, 7 },
+        { 0 }
+};
+struct hw_interrupt_type hw_itypes[1];
+
+/* Initialize interrupts.  */
+void __init mach_init_irqs (void)
+{
+        v850e_intc_init_irq_types (irq_inits, hw_itypes);
+}
+
+
+void machine_halt (void) __attribute__ ((noreturn));
+void machine_halt (void)
+{
+        SIM85E2_SIMFIN = 0;     /* Halt immediately.  */
+        for (;;) {}
+}
+
+EXPORT_SYMBOL(machine_halt);
+
+void machine_restart (char *__unused)
+{
+        machine_halt ();
+}
+
+EXPORT_SYMBOL(machine_restart);
+
+void machine_power_off (void)
+{
+        machine_halt ();
+}
+
+EXPORT_SYMBOL(machine_power_off);
diff --git a/arch/v850/kernel/sim85e2.ld b/arch/v850/kernel/sim85e2.ld
new file mode 100644
index 000000000000..7470fd2ffb5b
--- /dev/null
+++ b/arch/v850/kernel/sim85e2.ld
@@ -0,0 +1,36 @@
+/* Linker script for the sim85e2c simulator, which is a verilog simulation of
+   the V850E2 NA85E2C cpu core (CONFIG_V850E2_SIM85E2C).  */
+
+MEMORY {
+        /* 1MB of `instruction RAM', starting at 0.
+           Instruction fetches are much faster from IRAM than from DRAM.  */
+        IRAM : ORIGIN = IRAM_ADDR, LENGTH = IRAM_SIZE
+
+        /* 1MB of `data RAM', below and contiguous with the I/O space.
+           Data fetches are much faster from DRAM than from IRAM.  */
+        DRAM : ORIGIN = DRAM_ADDR, LENGTH = DRAM_SIZE
+
+        /* `external ram' (CS1 area), comes after IRAM.  */
+        ERAM : ORIGIN = ERAM_ADDR, LENGTH = ERAM_SIZE
+
+        /* Dynamic RAM; uses memory controller.  */
+        SDRAM : ORIGIN = SDRAM_ADDR, LENGTH = SDRAM_SIZE
+}
+
+SECTIONS {
+        .iram : {
+                INTV_CONTENTS
+                *arch/v850/kernel/head.o
+                *(.early.text)
+        } > IRAM
+        .dram : {
+                _memcons_output = . ;
+                . = . + 0x8000 ;
+                _memcons_output_end = . ;
+        } > DRAM
+        .sdram : {
+                /* We stick console output into a buffer here.  */
+                RAMK_KRAM_CONTENTS
+                ROOT_FS_CONTENTS
+        } > SDRAM
+}
diff --git a/arch/v850/kernel/simcons.c b/arch/v850/kernel/simcons.c
new file mode 100644
index 000000000000..7f0efaa025c9
--- /dev/null
+++ b/arch/v850/kernel/simcons.c
@@ -0,0 +1,166 @@
+/*
+ * arch/v850/kernel/simcons.c -- Console I/O for GDB v850e simulator
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/kernel.h>
+#include <linux/console.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/tty_driver.h>
+#include <linux/init.h>
+
+#include <asm/poll.h>
+#include <asm/string.h>
+#include <asm/simsyscall.h>
+
+
+/*  Low-level console. */
+
+static void simcons_write (struct console *co, const char *buf, unsigned len)
+{
+        V850_SIM_SYSCALL (write, 1, buf, len);
+}
+
+static int simcons_read (struct console *co, char *buf, unsigned len)
+{
+        return V850_SIM_SYSCALL (read, 0, buf, len);
+}
+
+static struct tty_driver *tty_driver;
+static struct tty_driver *simcons_device (struct console *c, int *index)
+{
+        *index = c->index;
+        return tty_driver;
+}
+
+static struct console simcons =
+{
+    .name       = "simcons",
+    .write      = simcons_write,
+    .read       = simcons_read,
+    .device     = simcons_device,
+    .flags      = CON_PRINTBUFFER,
+    .index      = -1,
+};
+
+/* Higher level TTY interface.  */
+
+int simcons_tty_open (struct tty_struct *tty, struct file *filp)
+{
+        return 0;
+}
+
+int simcons_tty_write (struct tty_struct *tty,
+                       const unsigned char *buf, int count)
+{
+        return V850_SIM_SYSCALL (write, 1, buf, count);
+}
+
+int simcons_tty_write_room (struct tty_struct *tty)
+{
+        /* Completely arbitrary.  */
+        return 0x100000;
+}
+
+int simcons_tty_chars_in_buffer (struct tty_struct *tty)
+{
+        /* We have no buffer.  */
+        return 0;
+}
+
+static struct tty_operations ops = {
+        .open = simcons_tty_open,
+        .write = simcons_tty_write,
+        .write_room = simcons_tty_write_room,
+        .chars_in_buffer = simcons_tty_chars_in_buffer,
+};
+
+int __init simcons_tty_init (void)
+{
+        struct tty_driver *driver = alloc_tty_driver(1);
+        int err;
+        if (!driver)
+                return -ENOMEM;
+        driver->name = "simcons";
+        driver->major = TTY_MAJOR;
+        driver->minor_start = 64;
+        driver->type = TTY_DRIVER_TYPE_SYSCONS;
+        driver->init_termios = tty_std_termios;
+        tty_set_operations(driver, &ops);
+        err = tty_register_driver(driver);
+        if (err) {
+                put_tty_driver(driver);
+                return err;
+        }
+        tty_driver = driver;
+        return 0;
+}
+/* We use `late_initcall' instead of just `__initcall' as a workaround for
+   the fact that (1) simcons_tty_init can't be called before tty_init,
+   (2) tty_init is called via `module_init', (3) if statically linked,
+   module_init == device_init, and (4) there's no ordering of init lists.
+   We can do this easily because simcons is always statically linked, but
+   other tty drivers that depend on tty_init and which must use
+   `module_init' to declare their init routines are likely to be broken.  */
+late_initcall(simcons_tty_init);
+
+/* Poll for input on the console, and if there's any, deliver it to the
+   tty driver.  */
+void simcons_poll_tty (struct tty_struct *tty)
+{
+        int flip = 0, send_break = 0;
+        struct pollfd pfd;
+        pfd.fd = 0;
+        pfd.events = POLLIN;
+
+        if (V850_SIM_SYSCALL (poll, &pfd, 1, 0) > 0) {
+                if (pfd.revents & POLLIN) {
+                        int left = TTY_FLIPBUF_SIZE - tty->flip.count;
+
+                        if (left > 0) {
+                                unsigned char *buf = tty->flip.char_buf_ptr;
+                                int rd = V850_SIM_SYSCALL (read, 0, buf, left);
+
+                                if (rd > 0) {
+                                        tty->flip.count += rd;
+                                        tty->flip.char_buf_ptr += rd;
+                                        memset (tty->flip.flag_buf_ptr, 0, rd);
+                                        tty->flip.flag_buf_ptr += rd;
+                                        flip = 1;
+                                } else
+                                        send_break = 1;
+                        }
+                } else if (pfd.revents & POLLERR)
+                        send_break = 1;
+        }
+
+        if (send_break) {
+                tty_insert_flip_char (tty, 0, TTY_BREAK);               
+                flip = 1;
+        }
+
+        if (flip)
+                tty_schedule_flip (tty);
+}
+
+void simcons_poll_ttys (void)
+{
+        if (tty_driver && tty_driver->ttys[0])
+                simcons_poll_tty (tty_driver->ttys[0]);
+}
+
+void simcons_setup (void)
+{
+        V850_SIM_SYSCALL (make_raw, 0);
+        register_console (&simcons);
+        printk (KERN_INFO "Console: GDB V850E simulator stdio\n");
+}
diff --git a/arch/v850/kernel/syscalls.c b/arch/v850/kernel/syscalls.c
new file mode 100644
index 000000000000..9224cb65f6ec
--- /dev/null
+++ b/arch/v850/kernel/syscalls.c
@@ -0,0 +1,197 @@
+/*
+ * arch/v850/kernel/syscalls.c -- Various system-call definitions not
+ *      defined in machine-independent code
+ *
+ *  Copyright (C) 2001,02  NEC Corporation
+ *  Copyright (C) 2001,02  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * This file was derived the ppc version, arch/ppc/kernel/syscalls.c
+ * ... which was derived from "arch/i386/kernel/sys_i386.c" by Gary Thomas;
+ *     modified by Cort Dougan (cort@cs.nmt.edu)
+ *     and Paul Mackerras (paulus@cs.anu.edu.au).
+ */
+
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/syscalls.h>
+#include <linux/sem.h>
+#include <linux/msg.h>
+#include <linux/shm.h>
+#include <linux/stat.h>
+#include <linux/mman.h>
+#include <linux/sys.h>
+#include <linux/ipc.h>
+#include <linux/utsname.h>
+#include <linux/file.h>
+
+#include <asm/uaccess.h>
+#include <asm/ipc.h>
+#include <asm/semaphore.h>
+
+/*
+ * sys_ipc() is the de-multiplexer for the SysV IPC calls..
+ *
+ * This is really horribly ugly.
+ */
+int
+sys_ipc (uint call, int first, int second, int third, void *ptr, long fifth)
+{
+        int version, ret;
+
+        version = call >> 16; /* hack for backward compatibility */
+        call &= 0xffff;
+
+        ret = -EINVAL;
+        switch (call) {
+        case SEMOP:
+                ret = sys_semop (first, (struct sembuf *)ptr, second);
+                break;
+        case SEMGET:
+                ret = sys_semget (first, second, third);
+                break;
+        case SEMCTL:
+        {
+                union semun fourth;
+
+                if (!ptr)
+                        break;
+                if ((ret = access_ok(VERIFY_READ, ptr, sizeof(long)) ? 0 : -EFAULT)
+                    || (ret = get_user(fourth.__pad, (void **)ptr)))
+                        break;
+                ret = sys_semctl (first, second, third, fourth);
+                break;
+        }
+        case MSGSND:
+                ret = sys_msgsnd (first, (struct msgbuf *) ptr, second, third);
+                break;
+        case MSGRCV:
+                switch (version) {
+                case 0: {
+                        struct ipc_kludge tmp;
+
+                        if (!ptr)
+                                break;
+                        if ((ret = access_ok(VERIFY_READ, ptr, sizeof(tmp)) ? 0 : -EFAULT)
+                            || (ret = copy_from_user(&tmp,
+                                                (struct ipc_kludge *) ptr,
+                                                sizeof (tmp))))
+                                break;
+                        ret = sys_msgrcv (first, tmp.msgp, second, tmp.msgtyp,
+                                          third);
+                        break;
+                        }
+                default:
+                        ret = sys_msgrcv (first, (struct msgbuf *) ptr,
+                                          second, fifth, third);
+                        break;
+                }
+                break;
+        case MSGGET:
+                ret = sys_msgget ((key_t) first, second);
+                break;
+        case MSGCTL:
+                ret = sys_msgctl (first, second, (struct msqid_ds *) ptr);
+                break;
+        case SHMAT:
+                switch (version) {
+                default: {
+                        ulong raddr;
+
+                        if ((ret = access_ok(VERIFY_WRITE, (ulong*) third,
+                                               sizeof(ulong)) ? 0 : -EFAULT))
+                                break;
+                        ret = do_shmat (first, (char *) ptr, second, &raddr);
+                        if (ret)
+                                break;
+                        ret = put_user (raddr, (ulong *) third);
+                        break;
+                        }
+                case 1: /* iBCS2 emulator entry point */
+                        if (!segment_eq(get_fs(), get_ds()))
+                                break;
+                        ret = do_shmat (first, (char *) ptr, second,
+                                         (ulong *) third);
+                        break;
+                }
+                break;
+        case SHMDT: 
+                ret = sys_shmdt ((char *)ptr);
+                break;
+        case SHMGET:
+                ret = sys_shmget (first, second, third);
+                break;
+        case SHMCTL:
+                ret = sys_shmctl (first, second, (struct shmid_ds *) ptr);
+                break;
+        }
+
+        return ret;
+}
+
+/*
+ * sys_pipe() is the normal C calling standard for creating
+ * a pipe. It's not the way unix traditionally does this, though.
+ */
+int sys_pipe (int *fildes)
+{
+        int fd[2];
+        int error;
+
+        error = do_pipe (fd);
+        if (!error) {
+                if (copy_to_user (fildes, fd, 2*sizeof (int)))
+                        error = -EFAULT;
+        }
+        return error;
+}
+
+static inline unsigned long
+do_mmap2 (unsigned long addr, size_t len,
+         unsigned long prot, unsigned long flags,
+         unsigned long fd, unsigned long pgoff)
+{
+        struct file * file = NULL;
+        int ret = -EBADF;
+
+        flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+        if (! (flags & MAP_ANONYMOUS)) {
+                if (!(file = fget (fd)))
+                        goto out;
+        }
+        
+        down_write (&current->mm->mmap_sem);
+        ret = do_mmap_pgoff (file, addr, len, prot, flags, pgoff);
+        up_write (&current->mm->mmap_sem);
+        if (file)
+                fput (file);
+out:
+        return ret;
+}
+
+unsigned long sys_mmap2 (unsigned long addr, size_t len,
+                        unsigned long prot, unsigned long flags,
+                        unsigned long fd, unsigned long pgoff)
+{
+        return do_mmap2 (addr, len, prot, flags, fd, pgoff);
+}
+
+unsigned long sys_mmap (unsigned long addr, size_t len,
+                       unsigned long prot, unsigned long flags,
+                       unsigned long fd, off_t offset)
+{
+        int err = -EINVAL;
+
+        if (offset & ~PAGE_MASK)
+                goto out;
+
+        err = do_mmap2 (addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
+out:
+        return err;
+}
diff --git a/arch/v850/kernel/teg.c b/arch/v850/kernel/teg.c
new file mode 100644
index 000000000000..495cf8f37bcb
--- /dev/null
+++ b/arch/v850/kernel/teg.c
@@ -0,0 +1,63 @@
+/*
+ * arch/v850/kernel/teg.c -- NB85E-TEG cpu chip
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/swap.h>
+#include <linux/bootmem.h>
+#include <linux/irq.h>
+
+#include <asm/atomic.h>
+#include <asm/page.h>
+#include <asm/machdep.h>
+#include <asm/v850e_timer_d.h>
+
+#include "mach.h"
+
+void __init mach_sched_init (struct irqaction *timer_action)
+{
+        /* Select timer interrupt instead of external pin.  */
+        TEG_ISS |= 0x1;
+        /* Start hardware timer.  */
+        v850e_timer_d_configure (0, HZ);
+        /* Install timer interrupt handler.  */
+        setup_irq (IRQ_INTCMD(0), timer_action);
+}
+
+static struct v850e_intc_irq_init irq_inits[] = {
+        { "IRQ", 0,             NUM_CPU_IRQS,   1, 7 },
+        { "CMD", IRQ_INTCMD(0), IRQ_INTCMD_NUM, 1, 5 },
+        { "SER", IRQ_INTSER(0), IRQ_INTSER_NUM, 1, 3 },
+        { "SR",  IRQ_INTSR(0),  IRQ_INTSR_NUM,  1, 4 },
+        { "ST",  IRQ_INTST(0),  IRQ_INTST_NUM,  1, 5 },
+        { 0 }
+};
+#define NUM_IRQ_INITS ((sizeof irq_inits / sizeof irq_inits[0]) - 1)
+
+static struct hw_interrupt_type hw_itypes[NUM_IRQ_INITS];
+
+/* Initialize MA chip interrupts.  */
+void __init teg_init_irqs (void)
+{
+        v850e_intc_init_irq_types (irq_inits, hw_itypes);
+}
+
+/* Called before configuring an on-chip UART.  */
+void teg_uart_pre_configure (unsigned chan, unsigned cflags, unsigned baud)
+{
+        /* Enable UART I/O pins instead of external interrupt pins, and
+           UART interrupts instead of external pin interrupts.  */
+        TEG_ISS |= 0x4E;
+}
diff --git a/arch/v850/kernel/time.c b/arch/v850/kernel/time.c
new file mode 100644
index 000000000000..f722a268238a
--- /dev/null
+++ b/arch/v850/kernel/time.c
@@ -0,0 +1,198 @@
+/*
+ * linux/arch/v850/kernel/time.c -- Arch-dependent timer functions
+ *
+ *  Copyright (C) 1991, 1992, 1995, 2001, 2002  Linus Torvalds
+ *
+ * This file contains the v850-specific time handling details.
+ * Most of the stuff is located in the machine specific files.
+ *
+ * 1997-09-10   Updated NTP code according to technical memorandum Jan '96
+ *              "A Kernel Model for Precision Timekeeping" by Dave Mills
+ */
+
+#include <linux/config.h> /* CONFIG_HEARTBEAT */
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/param.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/time.h>
+#include <linux/timex.h>
+#include <linux/profile.h>
+
+#include <asm/io.h>
+
+#include "mach.h"
+
+u64 jiffies_64 = INITIAL_JIFFIES;
+
+EXPORT_SYMBOL(jiffies_64);
+
+#define TICK_SIZE       (tick_nsec / 1000)
+
+/*
+ * Scheduler clock - returns current time in nanosec units.
+ */
+unsigned long long sched_clock(void)
+{
+        return (unsigned long long)jiffies * (1000000000 / HZ);
+}
+
+/*
+ * timer_interrupt() needs to keep up the real-time clock,
+ * as well as call the "do_timer()" routine every clocktick
+ */
+static irqreturn_t timer_interrupt (int irq, void *dummy, struct pt_regs *regs)
+{
+#if 0
+        /* last time the cmos clock got updated */
+        static long last_rtc_update=0;
+#endif
+
+        /* may need to kick the hardware timer */
+        if (mach_tick)
+          mach_tick ();
+
+        do_timer (regs);
+#ifndef CONFIG_SMP
+        update_process_times(user_mode(regs));
+#endif
+        profile_tick(CPU_PROFILING, regs);
+#if 0
+        /*
+         * If we have an externally synchronized Linux clock, then update
+         * CMOS clock accordingly every ~11 minutes. Set_rtc_mmss() has to be
+         * called as close as possible to 500 ms before the new second starts.
+         */
+        if ((time_status & STA_UNSYNC) == 0 &&
+            xtime.tv_sec > last_rtc_update + 660 &&
+            (xtime.tv_nsec / 1000) >= 500000 - ((unsigned) TICK_SIZE) / 2 &&
+            (xtime.tv_nsec / 1000) <= 500000 + ((unsigned) TICK_SIZE) / 2) {
+          if (set_rtc_mmss (xtime.tv_sec) == 0)
+            last_rtc_update = xtime.tv_sec;
+          else
+            last_rtc_update = xtime.tv_sec - 600; /* do it again in 60 s */
+        }
+#ifdef CONFIG_HEARTBEAT
+        /* use power LED as a heartbeat instead -- much more useful
+           for debugging -- based on the version for PReP by Cort */
+        /* acts like an actual heart beat -- ie thump-thump-pause... */
+        if (mach_heartbeat) {
+            static unsigned cnt = 0, period = 0, dist = 0;
+
+            if (cnt == 0 || cnt == dist)
+                mach_heartbeat ( 1 );
+            else if (cnt == 7 || cnt == dist+7)
+                mach_heartbeat ( 0 );
+
+            if (++cnt > period) {
+                cnt = 0;
+                /* The hyperbolic function below modifies the heartbeat period
+                 * length in dependency of the current (5min) load. It goes
+                 * through the points f(0)=126, f(1)=86, f(5)=51,
+                 * f(inf)->30. */
+                period = ((672<<FSHIFT)/(5*avenrun[0]+(7<<FSHIFT))) + 30;
+                dist = period / 4;
+            }
+        }
+#endif /* CONFIG_HEARTBEAT */
+#endif /* 0 */
+
+        return IRQ_HANDLED;
+}
+
+/*
+ * This version of gettimeofday has near microsecond resolution.
+ */
+void do_gettimeofday (struct timeval *tv)
+{
+#if 0 /* DAVIDM later if possible */
+        extern volatile unsigned long lost_ticks;
+        unsigned long lost;
+#endif
+        unsigned long flags;
+        unsigned long usec, sec;
+        unsigned long seq;
+
+        do {
+                seq = read_seqbegin_irqsave(&xtime_lock, flags);
+
+#if 0
+                usec = mach_gettimeoffset ? mach_gettimeoffset () : 0;
+#else
+                usec = 0;
+#endif
+#if 0 /* DAVIDM later if possible */
+                lost = lost_ticks;
+                if (lost)
+                        usec += lost * (1000000/HZ);
+#endif
+                sec = xtime.tv_sec;
+                usec += xtime.tv_nsec / 1000;
+        } while (read_seqretry_irqrestore(&xtime_lock, seq, flags));
+
+        while (usec >= 1000000) {
+                usec -= 1000000;
+                sec++;
+        }
+
+        tv->tv_sec = sec;
+        tv->tv_usec = usec;
+}
+
+EXPORT_SYMBOL(do_gettimeofday);
+
+int do_settimeofday(struct timespec *tv)
+{
+        if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
+                return -EINVAL;
+
+        write_seqlock_irq (&xtime_lock);
+
+        /* This is revolting. We need to set the xtime.tv_nsec
+         * correctly. However, the value in this location is
+         * is value at the last tick.
+         * Discover what correction gettimeofday
+         * would have done, and then undo it!
+         */
+#if 0
+        tv->tv_nsec -= mach_gettimeoffset() * 1000;
+#endif
+
+        while (tv->tv_nsec < 0) {
+                tv->tv_nsec += NSEC_PER_SEC;
+                tv->tv_sec--;
+        }
+
+        xtime.tv_sec = tv->tv_sec;
+        xtime.tv_nsec = tv->tv_nsec;
+
+        time_adjust = 0;                /* stop active adjtime () */
+        time_status |= STA_UNSYNC;
+        time_maxerror = NTP_PHASE_LIMIT;
+        time_esterror = NTP_PHASE_LIMIT;
+
+        write_sequnlock_irq (&xtime_lock);
+        clock_was_set();
+        return 0;
+}
+
+EXPORT_SYMBOL(do_settimeofday);
+
+static int timer_dev_id;
+static struct irqaction timer_irqaction = {
+        timer_interrupt,
+        SA_INTERRUPT,
+        CPU_MASK_NONE,
+        "timer",
+        &timer_dev_id,
+        NULL
+};
+
+void time_init (void)
+{
+        mach_gettimeofday (&xtime);
+        mach_sched_init (&timer_irqaction);
+}
diff --git a/arch/v850/kernel/v850_ksyms.c b/arch/v850/kernel/v850_ksyms.c
new file mode 100644
index 000000000000..0ca64900dd91
--- /dev/null
+++ b/arch/v850/kernel/v850_ksyms.c
@@ -0,0 +1,78 @@
+#include <linux/module.h>
+#include <linux/linkage.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/user.h>
+#include <linux/elfcore.h>
+#include <linux/in6.h>
+#include <linux/interrupt.h>
+#include <linux/config.h>
+
+#include <asm/pgalloc.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+#include <asm/semaphore.h>
+#include <asm/checksum.h>
+#include <asm/current.h>
+
+
+extern void *trap_table;
+EXPORT_SYMBOL (trap_table);
+
+/* platform dependent support */
+extern void dump_thread (struct pt_regs *, struct user *);
+EXPORT_SYMBOL (dump_thread);
+EXPORT_SYMBOL (kernel_thread);
+EXPORT_SYMBOL (enable_irq);
+EXPORT_SYMBOL (disable_irq);
+EXPORT_SYMBOL (disable_irq_nosync);
+EXPORT_SYMBOL (__bug);
+
+/* Networking helper routines. */
+EXPORT_SYMBOL (csum_partial_copy);
+EXPORT_SYMBOL (csum_partial_copy_from_user);
+EXPORT_SYMBOL (ip_compute_csum);
+EXPORT_SYMBOL (ip_fast_csum);
+
+/* string / mem functions */
+EXPORT_SYMBOL (strcpy);
+EXPORT_SYMBOL (strncpy);
+EXPORT_SYMBOL (strcat);
+EXPORT_SYMBOL (strncat);
+EXPORT_SYMBOL (strcmp);
+EXPORT_SYMBOL (strncmp);
+EXPORT_SYMBOL (strchr);
+EXPORT_SYMBOL (strlen);
+EXPORT_SYMBOL (strnlen);
+EXPORT_SYMBOL (strpbrk);
+EXPORT_SYMBOL (strrchr);
+EXPORT_SYMBOL (strstr);
+EXPORT_SYMBOL (memset);
+EXPORT_SYMBOL (memcpy);
+EXPORT_SYMBOL (memmove);
+EXPORT_SYMBOL (memcmp);
+EXPORT_SYMBOL (memscan);
+
+/* semaphores */
+EXPORT_SYMBOL (__down);
+EXPORT_SYMBOL (__down_interruptible);
+EXPORT_SYMBOL (__down_trylock);
+EXPORT_SYMBOL (__up);
+
+/*
+ * libgcc functions - functions that are used internally by the
+ * compiler...  (prototypes are not correct though, but that
+ * doesn't really matter since they're not versioned).
+ */
+extern void __ashldi3 (void);
+extern void __ashrdi3 (void);
+extern void __lshrdi3 (void);
+extern void __muldi3 (void);
+extern void __negdi2 (void);
+
+EXPORT_SYMBOL (__ashldi3);
+EXPORT_SYMBOL (__ashrdi3);
+EXPORT_SYMBOL (__lshrdi3);
+EXPORT_SYMBOL (__muldi3);
+EXPORT_SYMBOL (__negdi2);
diff --git a/arch/v850/kernel/v850e2_cache.c b/arch/v850/kernel/v850e2_cache.c
new file mode 100644
index 000000000000..4570312c689c
--- /dev/null
+++ b/arch/v850/kernel/v850e2_cache.c
@@ -0,0 +1,127 @@
+/*
+ * arch/v850/kernel/v850e2_cache.c -- Cache control for V850E2 cache
+ *      memories
+ *
+ *  Copyright (C) 2003  NEC Electronics Corporation
+ *  Copyright (C) 2003  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/mm.h>
+
+#include <asm/v850e2_cache.h>
+
+/* Cache operations we can do.  The encoding corresponds directly to the
+   value we need to write into the COPR register.  */
+enum cache_op {
+        OP_SYNC_IF_DIRTY           = V850E2_CACHE_COPR_CFC(0), /* 000 */
+        OP_SYNC_IF_VALID           = V850E2_CACHE_COPR_CFC(1), /* 001 */
+        OP_SYNC_IF_VALID_AND_CLEAR = V850E2_CACHE_COPR_CFC(3), /* 011 */
+        OP_WAY_CLEAR               = V850E2_CACHE_COPR_CFC(4), /* 100 */
+        OP_FILL                    = V850E2_CACHE_COPR_CFC(5), /* 101 */
+        OP_CLEAR                   = V850E2_CACHE_COPR_CFC(6), /* 110 */
+        OP_CREATE_DIRTY            = V850E2_CACHE_COPR_CFC(7)  /* 111 */
+};
+
+/* Which cache to use.  This encoding also corresponds directly to the
+   value we need to write into the COPR register. */
+enum cache {
+        ICACHE = 0,
+        DCACHE = V850E2_CACHE_COPR_LBSL
+};
+
+/* Returns ADDR rounded down to the beginning of its cache-line.  */
+#define CACHE_LINE_ADDR(addr)  \
+   ((addr) & ~(V850E2_CACHE_LINE_SIZE - 1))
+/* Returns END_ADDR rounded up to the `limit' of its cache-line.  */
+#define CACHE_LINE_END_ADDR(end_addr)  \
+   CACHE_LINE_ADDR(end_addr + (V850E2_CACHE_LINE_SIZE - 1))
+
+
+/* Low-level cache ops.  */
+
+/* Apply cache-op OP to all entries in CACHE.  */
+static inline void cache_op_all (enum cache_op op, enum cache cache)
+{
+        int cmd = op | cache | V850E2_CACHE_COPR_WSLE | V850E2_CACHE_COPR_STRT;
+
+        if (op != OP_WAY_CLEAR) {
+                /* The WAY_CLEAR operation does the whole way, but other
+                   ops take begin-index and count params; we just indicate
+                   the entire cache.  */
+                V850E2_CACHE_CADL = 0;
+                V850E2_CACHE_CADH = 0;
+                V850E2_CACHE_CCNT = V850E2_CACHE_WAY_SIZE - 1;
+        }
+
+        V850E2_CACHE_COPR = cmd | V850E2_CACHE_COPR_WSL(0); /* way 0 */
+        V850E2_CACHE_COPR = cmd | V850E2_CACHE_COPR_WSL(1); /* way 1 */
+        V850E2_CACHE_COPR = cmd | V850E2_CACHE_COPR_WSL(2); /* way 2 */
+        V850E2_CACHE_COPR = cmd | V850E2_CACHE_COPR_WSL(3); /* way 3 */
+}
+
+/* Apply cache-op OP to all entries in CACHE covering addresses ADDR
+   through ADDR+LEN.  */
+static inline void cache_op_range (enum cache_op op, u32 addr, u32 len,
+                                   enum cache cache)
+{
+        u32 start = CACHE_LINE_ADDR (addr);
+        u32 end = CACHE_LINE_END_ADDR (addr + len);
+        u32 num_lines = (end - start) >> V850E2_CACHE_LINE_SIZE_BITS;
+
+        V850E2_CACHE_CADL = start & 0xFFFF;
+        V850E2_CACHE_CADH = start >> 16;
+        V850E2_CACHE_CCNT = num_lines - 1;
+
+        V850E2_CACHE_COPR = op | cache | V850E2_CACHE_COPR_STRT;
+}
+
+
+/* High-level ops.  */
+
+static void cache_exec_after_store_all (void)
+{
+        cache_op_all (OP_SYNC_IF_DIRTY, DCACHE);
+        cache_op_all (OP_WAY_CLEAR, ICACHE);
+}
+
+static void cache_exec_after_store_range (u32 start, u32 len)
+{
+        cache_op_range (OP_SYNC_IF_DIRTY, start, len, DCACHE);
+        cache_op_range (OP_CLEAR, start, len, ICACHE);
+}
+
+
+/* Exported functions.  */
+
+void flush_icache (void)
+{
+        cache_exec_after_store_all ();
+}
+
+void flush_icache_range (unsigned long start, unsigned long end)
+{
+        cache_exec_after_store_range (start, end - start);
+}
+
+void flush_icache_page (struct vm_area_struct *vma, struct page *page)
+{
+        cache_exec_after_store_range (page_to_virt (page), PAGE_SIZE);
+}
+
+void flush_icache_user_range (struct vm_area_struct *vma, struct page *page,
+                              unsigned long addr, int len)
+{
+        cache_exec_after_store_range (addr, len);
+}
+
+void flush_cache_sigtramp (unsigned long addr)
+{
+        /* For the exact size, see signal.c, but 16 bytes should be enough.  */
+        cache_exec_after_store_range (addr, 16);
+}
diff --git a/arch/v850/kernel/v850e_cache.c b/arch/v850/kernel/v850e_cache.c
new file mode 100644
index 000000000000..ea3e51cfb259
--- /dev/null
+++ b/arch/v850/kernel/v850e_cache.c
@@ -0,0 +1,174 @@
+/*
+ * arch/v850/kernel/v850e_cache.c -- Cache control for V850E cache memories
+ *
+ *  Copyright (C) 2003  NEC Electronics Corporation
+ *  Copyright (C) 2003  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+/* This file implements cache control for the rather simple cache used on
+   some V850E CPUs, specifically the NB85E/TEG CPU-core and the V850E/ME2
+   CPU.  V850E2 processors have their own (better) cache
+   implementation.  */
+
+#include <asm/entry.h>
+#include <asm/cacheflush.h>
+#include <asm/v850e_cache.h>
+
+#define WAIT_UNTIL_CLEAR(value) while (value) {}
+
+/* Set caching params via the BHC and DCC registers.  */
+void v850e_cache_enable (u16 bhc, u16 icc, u16 dcc)
+{
+        unsigned long *r0_ram = (unsigned long *)R0_RAM_ADDR;
+        register u16 bhc_val asm ("r6") = bhc;
+
+        /* Read the instruction cache control register (ICC) and confirm
+           that bits 0 and 1 (TCLR0, TCLR1) are all cleared.  */
+        WAIT_UNTIL_CLEAR (V850E_CACHE_ICC & 0x3);
+        V850E_CACHE_ICC = icc;
+
+#ifdef V850E_CACHE_DCC
+        /* Configure data-cache.  */
+        V850E_CACHE_DCC = dcc;
+#endif /* V850E_CACHE_DCC */
+
+        /* Configure caching for various memory regions by writing the BHC
+           register.  The documentation says that an instruction _cannot_
+           enable/disable caching for the memory region in which the
+           instruction itself exists; to work around this, we store
+           appropriate instructions into the on-chip RAM area (which is never
+           cached), and briefly jump there to do the work.  */
+#ifdef V850E_CACHE_WRITE_IBS
+        *r0_ram++       = 0xf0720760;   /* st.h r0, 0xfffff072[r0] */
+#endif
+        *r0_ram++       = 0xf06a3760;   /* st.h r6, 0xfffff06a[r0] */
+        *r0_ram         = 0x5640006b;   /* jmp [r11] */
+
+        asm ("mov hilo(1f), r11; jmp [%1]; 1:;"
+             :: "r" (bhc_val), "r" (R0_RAM_ADDR) : "r11");
+}
+
+static void clear_icache (void)
+{
+        /* 1. Read the instruction cache control register (ICC) and confirm
+              that bits 0 and 1 (TCLR0, TCLR1) are all cleared.  */
+        WAIT_UNTIL_CLEAR (V850E_CACHE_ICC & 0x3);
+
+        /* 2. Read the ICC register and confirm that bit 12 (LOCK0) is
+              cleared.  Bit 13 of the ICC register is always cleared.  */
+        WAIT_UNTIL_CLEAR (V850E_CACHE_ICC & 0x1000);
+
+        /* 3. Set the TCLR0 and TCLR1 bits of the ICC register as follows,
+              when clearing way 0 and way 1 at the same time:
+                (a) Set the TCLR0 and TCLR1 bits.
+                (b) Read the TCLR0 and TCLR1 bits to confirm that these bits
+                    are cleared.
+                (c) Perform (a) and (b) above again.  */
+        V850E_CACHE_ICC |= 0x3;
+        WAIT_UNTIL_CLEAR (V850E_CACHE_ICC & 0x3);
+
+#ifdef V850E_CACHE_REPEAT_ICC_WRITE
+        /* Do it again.  */
+        V850E_CACHE_ICC |= 0x3;
+        WAIT_UNTIL_CLEAR (V850E_CACHE_ICC & 0x3);
+#endif
+}
+
+#ifdef V850E_CACHE_DCC
+/* Flush or clear (or both) the data cache, depending on the value of FLAGS;
+   the procedure is the same for both, just the control bits used differ (and
+   both may be performed simultaneously).  */
+static void dcache_op (unsigned short flags)
+{
+        /* 1. Read the data cache control register (DCC) and confirm that bits
+              0, 1, 4, and 5 (DC00, DC01, DC04, DC05) are all cleared.  */
+        WAIT_UNTIL_CLEAR (V850E_CACHE_DCC & 0x33);
+
+        /* 2. Clear DCC register bit 12 (DC12), bit 13 (DC13), or both
+              depending on the way for which tags are to be cleared.  */
+        V850E_CACHE_DCC &= ~0xC000;
+
+        /* 3. Set DCC register bit 0 (DC00), bit 1 (DC01) or both depending on
+              the way for which tags are to be cleared.
+              ...
+              Set DCC register bit 4 (DC04), bit 5 (DC05), or both depending
+              on the way to be data flushed.  */
+        V850E_CACHE_DCC |= flags;
+
+        /* 4. Read DCC register bit DC00, DC01 [DC04, DC05], or both depending
+              on the way for which tags were cleared [flushed] and confirm
+              that that bit is cleared.  */
+        WAIT_UNTIL_CLEAR (V850E_CACHE_DCC & flags);
+}
+#endif /* V850E_CACHE_DCC */
+
+/* Flushes the contents of the dcache to memory.  */
+static inline void flush_dcache (void)
+{
+#ifdef V850E_CACHE_DCC
+        /* We only need to do something if in write-back mode.  */
+        if (V850E_CACHE_DCC & 0x0400)
+                dcache_op (0x30);
+#endif /* V850E_CACHE_DCC */
+}
+
+/* Flushes the contents of the dcache to memory, and then clears it.  */
+static inline void clear_dcache (void)
+{
+#ifdef V850E_CACHE_DCC
+        /* We only need to do something if the dcache is enabled.  */
+        if (V850E_CACHE_DCC & 0x0C00)
+                dcache_op (0x33);
+#endif /* V850E_CACHE_DCC */
+}
+
+/* Clears the dcache without flushing to memory first.  */
+static inline void clear_dcache_no_flush (void)
+{
+#ifdef V850E_CACHE_DCC
+        /* We only need to do something if the dcache is enabled.  */
+        if (V850E_CACHE_DCC & 0x0C00)
+                dcache_op (0x3);
+#endif /* V850E_CACHE_DCC */
+}
+
+static inline void cache_exec_after_store (void)
+{
+        flush_dcache ();
+        clear_icache ();
+}
+
+
+/* Exported functions.  */
+
+void flush_icache (void)
+{
+        cache_exec_after_store ();
+}
+
+void flush_icache_range (unsigned long start, unsigned long end)
+{
+        cache_exec_after_store ();
+}
+
+void flush_icache_page (struct vm_area_struct *vma, struct page *page)
+{
+        cache_exec_after_store ();
+}
+
+void flush_icache_user_range (struct vm_area_struct *vma, struct page *page,
+                              unsigned long adr, int len)
+{
+        cache_exec_after_store ();
+}
+
+void flush_cache_sigtramp (unsigned long addr)
+{
+        cache_exec_after_store ();
+}
diff --git a/arch/v850/kernel/v850e_intc.c b/arch/v850/kernel/v850e_intc.c
new file mode 100644
index 000000000000..8d39a52ee6d1
--- /dev/null
+++ b/arch/v850/kernel/v850e_intc.c
@@ -0,0 +1,104 @@
+/*
+ * arch/v850/kernel/v850e_intc.c -- V850E interrupt controller (INTC)
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+
+#include <asm/v850e_intc.h>
+
+static void irq_nop (unsigned irq) { }
+
+static unsigned v850e_intc_irq_startup (unsigned irq)
+{
+        v850e_intc_clear_pending_irq (irq);
+        v850e_intc_enable_irq (irq);
+        return 0;
+}
+
+static void v850e_intc_end_irq (unsigned irq)
+{
+        unsigned long psw, temp;
+
+        /* Clear the highest-level bit in the In-service priority register
+           (ISPR), to allow this interrupt (or another of the same or
+           lesser priority) to happen again.
+
+           The `reti' instruction normally does this automatically when the
+           PSW bits EP and NP are zero, but we can't always rely on reti
+           being used consistently to return after an interrupt (another
+           process can be scheduled, for instance, which can delay the
+           associated reti for a long time, or this process may be being
+           single-stepped, which uses the `dbret' instruction to return
+           from the kernel).
+
+           We also set the PSW EP bit, which prevents reti from also
+           trying to modify the ISPR itself.  */
+
+        /* Get PSW and disable interrupts.  */
+        asm volatile ("stsr psw, %0; di" : "=r" (psw));
+        /* We don't want to do anything for NMIs (they don't use the ISPR).  */
+        if (! (psw & 0xC0)) {
+                /* Transition to `trap' state, so that an eventual real
+                   reti instruction won't modify the ISPR.  */
+                psw |= 0x40;
+                /* Fake an interrupt return, which automatically clears the
+                   appropriate bit in the ISPR.  */
+                asm volatile ("mov hilo(1f), %0;"
+                              "ldsr %0, eipc; ldsr %1, eipsw;"
+                              "reti;"
+                              "1:"
+                              : "=&r" (temp) : "r" (psw));
+        }
+}
+
+/* Initialize HW_IRQ_TYPES for INTC-controlled irqs described in array
+   INITS (which is terminated by an entry with the name field == 0).  */
+void __init v850e_intc_init_irq_types (struct v850e_intc_irq_init *inits,
+                                       struct hw_interrupt_type *hw_irq_types)
+{
+        struct v850e_intc_irq_init *init;
+        for (init = inits; init->name; init++) {
+                unsigned i;
+                struct hw_interrupt_type *hwit = hw_irq_types++;
+
+                hwit->typename = init->name;
+
+                hwit->startup  = v850e_intc_irq_startup;
+                hwit->shutdown = v850e_intc_disable_irq;
+                hwit->enable   = v850e_intc_enable_irq;
+                hwit->disable  = v850e_intc_disable_irq;
+                hwit->ack      = irq_nop;
+                hwit->end      = v850e_intc_end_irq;
+                
+                /* Initialize kernel IRQ infrastructure for this interrupt.  */
+                init_irq_handlers(init->base, init->num, init->interval, hwit);
+
+                /* Set the interrupt priorities.  */
+                for (i = 0; i < init->num; i++) {
+                        unsigned irq = init->base + i * init->interval;
+
+                        /* If the interrupt is currently enabled (all
+                           interrupts are initially disabled), then
+                           assume whoever enabled it has set things up
+                           properly, and avoid messing with it.  */
+                        if (! v850e_intc_irq_enabled (irq))
+                                /* This write also (1) disables the
+                                   interrupt, and (2) clears any pending
+                                   interrupts.  */
+                                V850E_INTC_IC (irq)
+                                        = (V850E_INTC_IC_PR (init->priority)
+                                           | V850E_INTC_IC_MK);
+                }
+        }
+}
diff --git a/arch/v850/kernel/v850e_timer_d.c b/arch/v850/kernel/v850e_timer_d.c
new file mode 100644
index 000000000000..d2a4ece2574c
--- /dev/null
+++ b/arch/v850/kernel/v850e_timer_d.c
@@ -0,0 +1,54 @@
+/*
+ * include/asm-v850/v850e_timer_d.c -- `Timer D' component often used
+ *      with V850E CPUs
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/kernel.h>
+
+#include <asm/v850e_utils.h>
+#include <asm/v850e_timer_d.h>
+
+/* Start interval timer TIMER (0-3).  The timer will issue the
+   corresponding INTCMD interrupt RATE times per second.
+   This function does not enable the interrupt.  */
+void v850e_timer_d_configure (unsigned timer, unsigned rate)
+{
+        unsigned divlog2, count;
+
+        /* Calculate params for timer.  */
+        if (! calc_counter_params (
+                    V850E_TIMER_D_BASE_FREQ, rate,
+                    V850E_TIMER_D_TMCD_CS_MIN, V850E_TIMER_D_TMCD_CS_MAX, 16,
+                    &divlog2, &count))
+                printk (KERN_WARNING
+                        "Cannot find interval timer %d setting suitable"
+                        " for rate of %dHz.\n"
+                        "Using rate of %dHz instead.\n",
+                        timer, rate,
+                        (V850E_TIMER_D_BASE_FREQ >> divlog2) >> 16);
+
+        /* Do the actual hardware timer initialization:  */
+
+        /* Enable timer.  */
+        V850E_TIMER_D_TMCD(timer) = V850E_TIMER_D_TMCD_CAE;
+        /* Set clock divider.  */
+        V850E_TIMER_D_TMCD(timer)
+                = V850E_TIMER_D_TMCD_CAE
+                | V850E_TIMER_D_TMCD_CS(divlog2);
+        /* Set timer compare register.  */
+        V850E_TIMER_D_CMD(timer) = count;
+        /* Start counting.  */
+        V850E_TIMER_D_TMCD(timer)
+                = V850E_TIMER_D_TMCD_CAE
+                | V850E_TIMER_D_TMCD_CS(divlog2)
+                | V850E_TIMER_D_TMCD_CE;
+}
diff --git a/arch/v850/kernel/v850e_utils.c b/arch/v850/kernel/v850e_utils.c
new file mode 100644
index 000000000000..e6807ef8dee6
--- /dev/null
+++ b/arch/v850/kernel/v850e_utils.c
@@ -0,0 +1,62 @@
+/*
+ * include/asm-v850/v850e_utils.h -- Utility functions associated with
+ *      V850E CPUs
+ *
+ *  Copyright (C) 2001,02,03  NEC Electronics Corporation
+ *  Copyright (C) 2001,02,03  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <asm/v850e_utils.h>
+
+/* Calculate counter clock-divider and count values to attain the
+   desired frequency RATE from the base frequency BASE_FREQ.  The
+   counter is expected to have a clock-divider, which can divide the
+   system cpu clock by a power of two value from MIN_DIVLOG2 to
+   MAX_DIV_LOG2, and a word-size of COUNTER_SIZE bits (the counter
+   counts up and resets whenever it's equal to the compare register,
+   generating an interrupt or whatever when it does so).  The returned
+   values are: *DIVLOG2 -- log2 of the desired clock divider and *COUNT
+   -- the counter compare value to use.  Returns true if it was possible
+   to find a reasonable value, otherwise false (and the other return
+   values will be set to be as good as possible).  */
+int calc_counter_params (unsigned long base_freq,
+                         unsigned long rate,
+                         unsigned min_divlog2, unsigned max_divlog2,
+                         unsigned counter_size,
+                         unsigned *divlog2, unsigned *count)
+{
+        unsigned _divlog2;
+        int ok = 0;
+
+        /* Find the lowest clock divider setting that can represent RATE.  */
+        for (_divlog2 = min_divlog2; _divlog2 <= max_divlog2; _divlog2++) {
+                /* Minimum interrupt rate possible using this divider.  */
+                unsigned min_int_rate
+                        = (base_freq >> _divlog2) >> counter_size;
+
+                if (min_int_rate <= rate) {
+                        /* This setting is the highest resolution
+                           setting that's slow enough enough to attain
+                           RATE interrupts per second, so use it.  */
+                        ok = 1;
+                        break;
+                }
+        }
+
+        if (_divlog2 > max_divlog2)
+                /* Can't find correct setting.  */
+                _divlog2 = max_divlog2;
+
+        if (divlog2)
+                *divlog2 = _divlog2;
+        if (count)
+                *count = ((base_freq >> _divlog2) + rate/2) / rate;
+
+        return ok;
+}
diff --git a/arch/v850/kernel/vmlinux.lds.S b/arch/v850/kernel/vmlinux.lds.S
new file mode 100644
index 000000000000..bbd3429bcffc
--- /dev/null
+++ b/arch/v850/kernel/vmlinux.lds.S
@@ -0,0 +1,285 @@
+/*
+ * arch/v850/vmlinux.lds.S -- kernel linker script for v850 platforms
+ *
+ *  Copyright (C) 2002,03,04  NEC Electronics Corporation
+ *  Copyright (C) 2002,03,04  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/config.h>
+#define VMLINUX_SYMBOL(_sym_) _##_sym_
+#include <asm-generic/vmlinux.lds.h>
+
+/* For most platforms, this will define useful things like RAM addr/size.  */
+#include <asm/machdep.h>
+
+
+/* The following macros contain the usual definitions for various data areas.
+   The prefix `RAMK_' is used to indicate macros suitable for kernels loaded
+   into RAM, and similarly `ROMK_' for ROM-resident kernels.  Note that all
+   symbols are prefixed with an extra `_' for compatibility with the v850
+   toolchain.  */
+
+        
+/* Interrupt vectors.  */
+#define INTV_CONTENTS                                                         \
+                . = ALIGN (0x10) ;                                            \
+                __intv_start = . ;                                            \
+                        *(.intv.reset)  /* Reset vector */                    \
+                . = __intv_start + 0x10 ;                                     \
+                        *(.intv.common) /* Vectors common to all v850e proc */\
+                . = __intv_start + 0x80 ;                                     \
+                        *(.intv.mach)   /* Machine-specific int. vectors.  */ \
+                __intv_end = . ;
+
+#define RODATA_CONTENTS                                                       \
+                . = ALIGN (16) ;                                              \
+                        *(.rodata) *(.rodata.*)                               \
+                        *(__vermagic)           /* Kernel version magic */    \
+                        *(.rodata1)                                           \
+                /* Kernel symbol table: Normal symbols */                     \
+                ___start___ksymtab = .;                                       \
+                        *(__ksymtab)                                          \
+                ___stop___ksymtab = .;                                        \
+                /* Kernel symbol table: GPL-only symbols */                   \
+                ___start___ksymtab_gpl = .;                                   \
+                        *(__ksymtab_gpl)                                      \
+                ___stop___ksymtab_gpl = .;                                    \
+                /* Kernel symbol table: strings */                            \
+                        *(__ksymtab_strings)                                  \
+                /* Kernel symbol table: Normal symbols */                     \
+                ___start___kcrctab = .;                                       \
+                        *(__kcrctab)                                          \
+                ___stop___kcrctab = .;                                        \
+                /* Kernel symbol table: GPL-only symbols */                   \
+                ___start___kcrctab_gpl = .;                                   \
+                        *(__kcrctab_gpl)                                      \
+                ___stop___kcrctab_gpl = .;                                    \
+                /* Built-in module parameters */                              \
+                ___start___param = .;                                         \
+                *(__param)                                                    \
+                ___stop___param = .;
+
+
+/* Kernel text segment, and some constant data areas.  */
+#define TEXT_CONTENTS                                                         \
+                __stext = . ;                                                 \
+                *(.text)                                                      \
+                SCHED_TEXT                                                    \
+                        *(.exit.text)   /* 2.5 convention */                  \
+                        *(.text.exit)   /* 2.4 convention */                  \
+                        *(.text.lock)                                         \
+                        *(.exitcall.exit)                                     \
+                __real_etext = . ;      /* There may be data after here.  */  \
+                RODATA_CONTENTS                                               \
+                . = ALIGN (4) ;                                               \
+                        *(.call_table_data)                                   \
+                        *(.call_table_text)                                   \
+                . = ALIGN (16) ;        /* Exception table.  */               \
+                ___start___ex_table = . ;                                     \
+                        *(__ex_table)                                         \
+                ___stop___ex_table = . ;                                      \
+                . = ALIGN (4) ;                                               \
+                __etext = . ;
+
+/* Kernel data segment.  */
+#define DATA_CONTENTS                                                         \
+                __sdata = . ;                                                 \
+                *(.data)                                                      \
+                        *(.exit.data)   /* 2.5 convention */                  \
+                        *(.data.exit)   /* 2.4 convention */                  \
+                . = ALIGN (16) ;                                              \
+                *(.data.cacheline_aligned)                                    \
+                . = ALIGN (0x2000) ;                                          \
+                *(.data.init_task)                                            \
+                . = ALIGN (0x2000) ;                                          \
+                __edata = . ;
+
+/* Kernel BSS segment.  */
+#define BSS_CONTENTS                                                          \
+                __sbss = . ;                                                  \
+                        *(.bss)                                               \
+                        *(COMMON)                                             \
+                . = ALIGN (4) ;                                               \
+                __init_stack_end = . ;                                        \
+                __ebss = . ;
+
+/* `initcall' tables.  */
+#define INITCALL_CONTENTS                                                     \
+                . = ALIGN (16) ;                                              \
+                ___setup_start = . ;                                          \
+                        *(.init.setup)  /* 2.5 convention */                  \
+                        *(.setup.init)  /* 2.4 convention */                  \
+                ___setup_end = . ;                                            \
+                ___initcall_start = . ;                                       \
+                        *(.initcall.init)                                     \
+                        *(.initcall1.init)                                    \
+                        *(.initcall2.init)                                    \
+                        *(.initcall3.init)                                    \
+                        *(.initcall4.init)                                    \
+                        *(.initcall5.init)                                    \
+                        *(.initcall6.init)                                    \
+                        *(.initcall7.init)                                    \
+                . = ALIGN (4) ;                                               \
+                ___initcall_end = . ;                                         \
+                ___con_initcall_start = .;                                    \
+                        *(.con_initcall.init)                                 \
+                ___con_initcall_end = .;
+
+/* Contents of `init' section for a kernel that's loaded into RAM.  */
+#define RAMK_INIT_CONTENTS                                                    \
+                RAMK_INIT_CONTENTS_NO_END                                     \
+                __init_end = . ;
+/* Same as RAMK_INIT_CONTENTS, but doesn't define the `__init_end' symbol.  */
+#define RAMK_INIT_CONTENTS_NO_END                                             \
+                . = ALIGN (4096) ;                                            \
+                __init_start = . ;                                            \
+                        __sinittext = .;                                      \
+                        *(.init.text)   /* 2.5 convention */                  \
+                        __einittext = .;                                      \
+                        *(.init.data)                                         \
+                        *(.text.init)   /* 2.4 convention */                  \
+                        *(.data.init)                                         \
+                INITCALL_CONTENTS                                             \
+                INITRAMFS_CONTENTS
+
+/* The contents of `init' section for a ROM-resident kernel which
+   should go into RAM.  */      
+#define ROMK_INIT_RAM_CONTENTS                                                \
+                . = ALIGN (4096) ;                                            \
+                __init_start = . ;                                            \
+                        *(.init.data)   /* 2.5 convention */                  \
+                        *(.data.init)   /* 2.4 convention */                  \
+                __init_end = . ;                                              \
+                . = ALIGN (4096) ;
+
+/* The contents of `init' section for a ROM-resident kernel which
+   should go into ROM.  */      
+#define ROMK_INIT_ROM_CONTENTS                                                \
+                        _sinittext = .;                                       \
+                        *(.init.text)   /* 2.5 convention */                  \
+                        _einittext = .;                                       \
+                        *(.text.init)   /* 2.4 convention */                  \
+                INITCALL_CONTENTS                                             \
+                INITRAMFS_CONTENTS
+
+/* A root filesystem image, for kernels with an embedded root filesystem.  */
+#define ROOT_FS_CONTENTS                                                      \
+                __root_fs_image_start = . ;                                   \
+                *(.root)                                                      \
+                __root_fs_image_end = . ;
+/* The initramfs archive.  */
+#define INITRAMFS_CONTENTS                                                    \
+                . = ALIGN (4) ;                                               \
+                ___initramfs_start = . ;                                      \
+                        *(.init.ramfs)                                        \
+                ___initramfs_end = . ;
+/* Where the initial bootmap (bitmap for the boot-time memory allocator) 
+   should be place.  */
+#define BOOTMAP_CONTENTS                                                      \
+                . = ALIGN (4096) ;                                            \
+                __bootmap = . ;                                               \
+                . = . + 4096 ;          /* enough for 128MB.   */
+
+/* The contents of a `typical' kram area for a kernel in RAM.  */
+#define RAMK_KRAM_CONTENTS                                                    \
+                __kram_start = . ;                                            \
+                TEXT_CONTENTS                                                 \
+                DATA_CONTENTS                                                 \
+                BSS_CONTENTS                                                  \
+                RAMK_INIT_CONTENTS                                            \
+                __kram_end = . ;                                              \
+                BOOTMAP_CONTENTS
+
+
+/* Define output sections normally used for a ROM-resident kernel.  
+   ROM and RAM should be appropriate memory areas to use for kernel
+   ROM and RAM data.  This assumes that ROM starts at 0 (and thus can
+   hold the interrupt vectors).  */
+#define ROMK_SECTIONS(ROM, RAM)                                               \
+        .rom : {                                                              \
+                INTV_CONTENTS                                                 \
+                TEXT_CONTENTS                                                 \
+                ROMK_INIT_ROM_CONTENTS                                        \
+                ROOT_FS_CONTENTS                                              \
+        } > ROM                                                               \
+                                                                              \
+        __rom_copy_src_start = . ;                                            \
+                                                                              \
+        .data : {                                                             \
+                __kram_start = . ;                                            \
+                __rom_copy_dst_start = . ;                                    \
+                DATA_CONTENTS                                                 \
+                ROMK_INIT_RAM_CONTENTS                                        \
+                __rom_copy_dst_end = . ;                                      \
+        } > RAM  AT> ROM                                                      \
+                                                                              \
+        .bss ALIGN (4) : {                                                    \
+                BSS_CONTENTS                                                  \
+                __kram_end = . ;                                              \
+                BOOTMAP_CONTENTS                                              \
+        } > RAM
+
+
+/* The 32-bit variable `jiffies' is just the lower 32-bits of `jiffies_64'.  */
+_jiffies = _jiffies_64 ;
+
+
+/* Include an appropriate platform-dependent linker-script (which
+   usually should use the above macros to do most of the work).  */
+
+#ifdef CONFIG_V850E_SIM
+# include "sim.ld"
+#endif
+
+#ifdef CONFIG_V850E2_SIM85E2
+# include "sim85e2.ld"
+#endif
+
+#ifdef CONFIG_V850E2_FPGA85E2C
+# include "fpga85e2c.ld"
+#endif
+
+#ifdef CONFIG_V850E2_ANNA
+# ifdef CONFIG_ROM_KERNEL
+#  include "anna-rom.ld"
+# else
+#  include "anna.ld"
+# endif
+#endif
+
+#ifdef CONFIG_V850E_AS85EP1
+# ifdef CONFIG_ROM_KERNEL
+#  include "as85ep1-rom.ld"
+# else
+#  include "as85ep1.ld"
+# endif
+#endif
+
+#ifdef CONFIG_RTE_CB_MA1
+# ifdef CONFIG_ROM_KERNEL
+#  include "rte_ma1_cb-rom.ld"
+# else
+#  include "rte_ma1_cb.ld"
+# endif
+#endif
+
+#ifdef CONFIG_RTE_CB_NB85E
+# ifdef CONFIG_ROM_KERNEL
+#  include "rte_nb85e_cb-rom.ld"
+# elif defined(CONFIG_RTE_CB_MULTI)
+#  include "rte_nb85e_cb-multi.ld"
+# else
+#  include "rte_nb85e_cb.ld"
+# endif
+#endif
+
+#ifdef CONFIG_RTE_CB_ME2
+#  include "rte_me2_cb.ld"
+#endif
+
diff --git a/arch/v850/lib/Makefile b/arch/v850/lib/Makefile
new file mode 100644
index 000000000000..1c78b728a117
--- /dev/null
+++ b/arch/v850/lib/Makefile
@@ -0,0 +1,6 @@
+#
+# arch/v850/lib/Makefile
+#
+
+lib-y  = ashrdi3.o ashldi3.o lshrdi3.o muldi3.o negdi2.o \
+         checksum.o memcpy.o memset.o
diff --git a/arch/v850/lib/ashldi3.c b/arch/v850/lib/ashldi3.c
new file mode 100644
index 000000000000..9e792d53f0e4
--- /dev/null
+++ b/arch/v850/lib/ashldi3.c
@@ -0,0 +1,62 @@
+/* ashldi3.c extracted from gcc-2.95.2/libgcc2.c which is: */
+/* Copyright (C) 1989, 92-98, 1999 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#define BITS_PER_UNIT 8
+
+typedef          int SItype     __attribute__ ((mode (SI)));
+typedef unsigned int USItype    __attribute__ ((mode (SI)));
+typedef          int DItype     __attribute__ ((mode (DI)));
+typedef int word_type __attribute__ ((mode (__word__)));
+
+struct DIstruct {SItype high, low;};
+
+typedef union
+{
+  struct DIstruct s;
+  DItype ll;
+} DIunion;
+
+DItype
+__ashldi3 (DItype u, word_type b)
+{
+  DIunion w;
+  word_type bm;
+  DIunion uu;
+
+  if (b == 0)
+    return u;
+
+  uu.ll = u;
+
+  bm = (sizeof (SItype) * BITS_PER_UNIT) - b;
+  if (bm <= 0)
+    {
+      w.s.low = 0;
+      w.s.high = (USItype)uu.s.low << -bm;
+    }
+  else
+    {
+      USItype carries = (USItype)uu.s.low >> bm;
+      w.s.low = (USItype)uu.s.low << b;
+      w.s.high = ((USItype)uu.s.high << b) | carries;
+    }
+
+  return w.ll;
+}
diff --git a/arch/v850/lib/ashrdi3.c b/arch/v850/lib/ashrdi3.c
new file mode 100644
index 000000000000..78efb65e315a
--- /dev/null
+++ b/arch/v850/lib/ashrdi3.c
@@ -0,0 +1,63 @@
+/* ashrdi3.c extracted from gcc-2.7.2/libgcc2.c which is: */
+/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#define BITS_PER_UNIT 8
+
+typedef          int SItype     __attribute__ ((mode (SI)));
+typedef unsigned int USItype    __attribute__ ((mode (SI)));
+typedef          int DItype     __attribute__ ((mode (DI)));
+typedef int word_type __attribute__ ((mode (__word__)));
+
+struct DIstruct {SItype high, low;};
+
+typedef union
+{
+  struct DIstruct s;
+  DItype ll;
+} DIunion;
+
+DItype
+__ashrdi3 (DItype u, word_type b)
+{
+  DIunion w;
+  word_type bm;
+  DIunion uu;
+
+  if (b == 0)
+    return u;
+
+  uu.ll = u;
+
+  bm = (sizeof (SItype) * BITS_PER_UNIT) - b;
+  if (bm <= 0)
+    {
+      /* w.s.high = 1..1 or 0..0 */
+      w.s.high = uu.s.high >> (sizeof (SItype) * BITS_PER_UNIT - 1);
+      w.s.low = uu.s.high >> -bm;
+    }
+  else
+    {
+      USItype carries = (USItype)uu.s.high << bm;
+      w.s.high = uu.s.high >> b;
+      w.s.low = ((USItype)uu.s.low >> b) | carries;
+    }
+
+  return w.ll;
+}
diff --git a/arch/v850/lib/checksum.c b/arch/v850/lib/checksum.c
new file mode 100644
index 000000000000..d308b724c023
--- /dev/null
+++ b/arch/v850/lib/checksum.c
@@ -0,0 +1,154 @@
+/*
+ * INET         An implementation of the TCP/IP protocol suite for the LINUX
+ *              operating system.  INET is implemented using the  BSD Socket
+ *              interface as the means of communication with the user level.
+ *
+ *              MIPS specific IP/TCP/UDP checksumming routines
+ *
+ * Authors:     Ralf Baechle, <ralf@waldorf-gmbh.de>
+ *              Lots of code moved from tcp.c and ip.c; see those files
+ *              for more names.
+ *
+ *              This program is free software; you can redistribute it and/or
+ *              modify it under the terms of the GNU General Public License
+ *              as published by the Free Software Foundation; either version
+ *              2 of the License, or (at your option) any later version.
+ *
+ * $Id: checksum.c,v 1.1 2002/09/28 14:58:40 gerg Exp $
+ */
+#include <net/checksum.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <asm/byteorder.h>
+#include <asm/string.h>
+#include <asm/uaccess.h>
+
+static inline unsigned short from32to16 (unsigned long sum)
+{
+        unsigned int result;
+        /*
+                                %0              %1
+              hsw %1, %0        H     L         L     H
+              add %1, %0        H     L         H+L+C H+L
+        */
+        asm ("hsw %1, %0; add %1, %0" : "=&r" (result) : "r" (sum));
+        return result >> 16;
+}
+
+static inline unsigned int do_csum(const unsigned char * buff, int len)
+{
+        int odd, count;
+        unsigned int result = 0;
+
+        if (len <= 0)
+                goto out;
+        odd = 1 & (unsigned long) buff;
+        if (odd) {
+                result = be16_to_cpu(*buff);
+                len--;
+                buff++;
+        }
+        count = len >> 1;               /* nr of 16-bit words.. */
+        if (count) {
+                if (2 & (unsigned long) buff) {
+                        result += *(unsigned short *) buff;
+                        count--;
+                        len -= 2;
+                        buff += 2;
+                }
+                count >>= 1;            /* nr of 32-bit words.. */
+                if (count) {
+                        unsigned int carry = 0;
+                        do {
+                                unsigned int w = *(unsigned int *) buff;
+                                count--;
+                                buff += 4;
+                                result += carry;
+                                result += w;
+                                carry = (w > result);
+                        } while (count);
+                        result += carry;
+                        result = (result & 0xffff) + (result >> 16);
+                }
+                if (len & 2) {
+                        result += *(unsigned short *) buff;
+                        buff += 2;
+                }
+        }
+        if (len & 1)
+                result += le16_to_cpu(*buff);
+        result = from32to16(result);
+        if (odd)
+                result = ((result >> 8) & 0xff) | ((result & 0xff) << 8);
+out:
+        return result;
+}
+
+/*
+ *      This is a version of ip_compute_csum() optimized for IP headers,
+ *      which always checksum on 4 octet boundaries.
+ */
+unsigned short ip_fast_csum(unsigned char * iph, unsigned int ihl)
+{
+        return ~do_csum(iph,ihl*4);
+}
+
+/*
+ * this routine is used for miscellaneous IP-like checksums, mainly
+ * in icmp.c
+ */
+unsigned short ip_compute_csum(const unsigned char * buff, int len)
+{
+        return ~do_csum(buff,len);
+}
+
+/*
+ * computes a partial checksum, e.g. for TCP/UDP fragments
+ */
+unsigned int csum_partial(const unsigned char *buff, int len, unsigned int sum)
+{
+        unsigned int result = do_csum(buff, len);
+
+        /* add in old sum, and carry.. */
+        result += sum;
+        if(sum > result)
+                result += 1;
+        return result;
+}
+
+EXPORT_SYMBOL(csum_partial);
+
+/*
+ * copy while checksumming, otherwise like csum_partial
+ */
+unsigned int csum_partial_copy(const unsigned char *src, unsigned char *dst,
+                               int len, unsigned int sum)
+{
+        /*
+         * It's 2:30 am and I don't feel like doing it real ...
+         * This is lots slower than the real thing (tm)
+         */
+        sum = csum_partial(src, len, sum);
+        memcpy(dst, src, len);
+
+        return sum;
+}
+
+/*
+ * Copy from userspace and compute checksum.  If we catch an exception
+ * then zero the rest of the buffer.
+ */
+unsigned int csum_partial_copy_from_user (const unsigned char *src, unsigned char *dst,
+                                          int len, unsigned int sum,
+                                          int *err_ptr)
+{
+        int missing;
+
+        missing = copy_from_user(dst, src, len);
+        if (missing) {
+                memset(dst + len - missing, 0, missing);
+                *err_ptr = -EFAULT;
+        }
+                
+        return csum_partial(dst, len, sum);
+}
diff --git a/arch/v850/lib/lshrdi3.c b/arch/v850/lib/lshrdi3.c
new file mode 100644
index 000000000000..93b1cb6fdee8
--- /dev/null
+++ b/arch/v850/lib/lshrdi3.c
@@ -0,0 +1,62 @@
+/* lshrdi3.c extracted from gcc-2.7.2/libgcc2.c which is: */
+/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#define BITS_PER_UNIT 8
+
+typedef          int SItype     __attribute__ ((mode (SI)));
+typedef unsigned int USItype    __attribute__ ((mode (SI)));
+typedef          int DItype     __attribute__ ((mode (DI)));
+typedef int word_type __attribute__ ((mode (__word__)));
+
+struct DIstruct {SItype high, low;};
+
+typedef union
+{
+  struct DIstruct s;
+  DItype ll;
+} DIunion;
+
+DItype
+__lshrdi3 (DItype u, word_type b)
+{
+  DIunion w;
+  word_type bm;
+  DIunion uu;
+
+  if (b == 0)
+    return u;
+
+  uu.ll = u;
+
+  bm = (sizeof (SItype) * BITS_PER_UNIT) - b;
+  if (bm <= 0)
+    {
+      w.s.high = 0;
+      w.s.low = (USItype)uu.s.high >> -bm;
+    }
+  else
+    {
+      USItype carries = (USItype)uu.s.high << bm;
+      w.s.high = (USItype)uu.s.high >> b;
+      w.s.low = ((USItype)uu.s.low >> b) | carries;
+    }
+
+  return w.ll;
+}
diff --git a/arch/v850/lib/memcpy.c b/arch/v850/lib/memcpy.c
new file mode 100644
index 000000000000..492847b3e612
--- /dev/null
+++ b/arch/v850/lib/memcpy.c
@@ -0,0 +1,92 @@
+/*
+ * arch/v850/lib/memcpy.c -- Memory copying
+ *
+ *  Copyright (C) 2001,02  NEC Corporation
+ *  Copyright (C) 2001,02  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/types.h>
+#include <asm/string.h>
+
+#define CHUNK_SIZE              32 /* bytes */
+#define CHUNK_ALIGNED(addr)     (((unsigned long)addr & 0x3) == 0)
+
+/* Note that this macro uses 8 call-clobbered registers (not including
+   R1), which are few enough so that the following functions don't need
+   to spill anything to memory.  It also uses R1, which is nominally
+   reserved for the assembler, but here it should be OK.  */
+#define COPY_CHUNK(src, dst)                    \
+   asm ("mov %0, ep;"                           \
+        "sld.w 0[ep], r1; sld.w 4[ep], r12;"    \
+        "sld.w 8[ep], r13; sld.w 12[ep], r14;"  \
+        "sld.w 16[ep], r15; sld.w 20[ep], r17;" \
+        "sld.w 24[ep], r18; sld.w 28[ep], r19;" \
+        "mov %1, ep;"                           \
+        "sst.w r1, 0[ep]; sst.w r12, 4[ep];"    \
+        "sst.w r13, 8[ep]; sst.w r14, 12[ep];"  \
+        "sst.w r15, 16[ep]; sst.w r17, 20[ep];" \
+        "sst.w r18, 24[ep]; sst.w r19, 28[ep]"  \
+        :: "r" (src), "r" (dst)                 \
+        : "r1", "r12", "r13", "r14", "r15",     \
+          "r17", "r18", "r19", "ep", "memory");
+
+void *memcpy (void *dst, const void *src, __kernel_size_t size)
+{
+        char *_dst = dst;
+        const char *_src = src;
+
+        if (size >= CHUNK_SIZE && CHUNK_ALIGNED(_src) && CHUNK_ALIGNED(_dst)) {
+                /* Copy large blocks efficiently.  */
+                unsigned count;
+                for (count = size / CHUNK_SIZE; count; count--) {
+                        COPY_CHUNK (_src, _dst);
+                        _src += CHUNK_SIZE;
+                        _dst += CHUNK_SIZE;
+                }
+                size %= CHUNK_SIZE;
+        }
+
+        if (size > 0)
+                do
+                        *_dst++ = *_src++;
+                while (--size);
+
+        return dst;
+}
+
+void *memmove (void *dst, const void *src, __kernel_size_t size)
+{
+        if ((unsigned long)dst < (unsigned long)src
+            || (unsigned long)src + size < (unsigned long)dst)
+                return memcpy (dst, src, size);
+        else {
+                char *_dst = dst + size;
+                const char *_src = src + size;
+
+                if (size >= CHUNK_SIZE
+                    && CHUNK_ALIGNED (_src) && CHUNK_ALIGNED (_dst))
+                {
+                        /* Copy large blocks efficiently.  */
+                        unsigned count;
+                        for (count = size / CHUNK_SIZE; count; count--) {
+                                _src -= CHUNK_SIZE;
+                                _dst -= CHUNK_SIZE;
+                                COPY_CHUNK (_src, _dst);
+                        }
+                        size %= CHUNK_SIZE;
+                }
+
+                if (size > 0)
+                        do
+                                *--_dst = *--_src;
+                        while (--size);
+
+                return _dst;
+        }
+}
diff --git a/arch/v850/lib/memset.c b/arch/v850/lib/memset.c
new file mode 100644
index 000000000000..d1b2ad821b15
--- /dev/null
+++ b/arch/v850/lib/memset.c
@@ -0,0 +1,68 @@
+/*
+ * arch/v850/lib/memset.c -- Memory initialization
+ *
+ *  Copyright (C) 2001,02,04  NEC Corporation
+ *  Copyright (C) 2001,02,04  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <linux/types.h>
+
+void *memset (void *dst, int val, __kernel_size_t count)
+{
+        if (count) {
+                register unsigned loop;
+                register void *ptr asm ("ep") = dst;
+
+                /* replicate VAL into a long.  */
+                val &= 0xff;
+                val |= val << 8;
+                val |= val << 16;
+
+                /* copy initial unaligned bytes.  */
+                if ((long)ptr & 1) {
+                        *(char *)ptr = val;
+                        ptr = (void *)((char *)ptr + 1);
+                        count--;
+                }
+                if (count > 2 && ((long)ptr & 2)) {
+                        *(short *)ptr = val;
+                        ptr = (void *)((short *)ptr + 1);
+                        count -= 2;
+                }
+
+                /* 32-byte copying loop.  */
+                for (loop = count / 32; loop; loop--) {
+                        asm ("sst.w %0, 0[ep]; sst.w %0, 4[ep];"
+                             "sst.w %0, 8[ep]; sst.w %0, 12[ep];"
+                             "sst.w %0, 16[ep]; sst.w %0, 20[ep];"
+                             "sst.w %0, 24[ep]; sst.w %0, 28[ep]"
+                             :: "r" (val) : "memory");
+                        ptr += 32;
+                }
+                count %= 32;
+
+                /* long copying loop.  */
+                for (loop = count / 4; loop; loop--) {
+                        *(long *)ptr = val;
+                        ptr = (void *)((long *)ptr + 1);
+                }
+                count %= 4;
+
+                /* finish up with any trailing bytes.  */
+                if (count & 2) {
+                        *(short *)ptr = val;
+                        ptr = (void *)((short *)ptr + 1);
+                }
+                if (count & 1) {
+                        *(char *)ptr = val;
+                }
+        }
+
+        return dst;
+}
diff --git a/arch/v850/lib/muldi3.c b/arch/v850/lib/muldi3.c
new file mode 100644
index 000000000000..277ca25c82c8
--- /dev/null
+++ b/arch/v850/lib/muldi3.c
@@ -0,0 +1,61 @@
+/* muldi3.c extracted from gcc-2.7.2.3/libgcc2.c and 
+                           gcc-2.7.2.3/longlong.h which is: */
+/* Copyright (C) 1989, 1992, 1993, 1994, 1995, 2001 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#define umul_ppmm(w1, w0, u, v) \
+  __asm__ ("mulu %3, %0, %1"                                            \
+           : "=r" ((USItype)(w0)),                                      \
+             "=r" ((USItype)(w1))                                       \
+           : "%0" ((USItype)(u)),                                       \
+             "r" ((USItype)(v)))
+
+#define __umulsidi3(u, v) \
+  ({DIunion __w;                                                        \
+    umul_ppmm (__w.s.high, __w.s.low, u, v);                            \
+    __w.ll; })
+
+typedef          int SItype     __attribute__ ((mode (SI)));
+typedef unsigned int USItype    __attribute__ ((mode (SI)));
+typedef          int DItype     __attribute__ ((mode (DI)));
+typedef int word_type __attribute__ ((mode (__word__)));
+
+struct DIstruct {SItype high, low;};
+
+typedef union
+{
+  struct DIstruct s;
+  DItype ll;
+} DIunion;
+
+DItype
+__muldi3 (DItype u, DItype v)
+{
+  DIunion w;
+  DIunion uu, vv;
+
+  uu.ll = u,
+  vv.ll = v;
+
+  w.ll = __umulsidi3 (uu.s.low, vv.s.low);
+  w.s.high += ((USItype) uu.s.low * (USItype) vv.s.high
+               + (USItype) uu.s.high * (USItype) vv.s.low);
+
+  return w.ll;
+}
diff --git a/arch/v850/lib/negdi2.c b/arch/v850/lib/negdi2.c
new file mode 100644
index 000000000000..571e04fc619a
--- /dev/null
+++ b/arch/v850/lib/negdi2.c
@@ -0,0 +1,25 @@
+/*
+ * arch/v850/lib/negdi2.c -- 64-bit negation
+ *
+ *  Copyright (C) 2001  NEC Corporation
+ *  Copyright (C) 2001  Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+typedef          int DItype     __attribute__ ((mode (DI)));
+
+DItype __negdi2 (DItype x)
+{
+        __asm__ __volatile__
+                ("not   r6, r10;"
+                 "add   1, r10;"
+                 "setf  c, r6;"
+                 "not   r7, r11;"
+                 "add   r6, r11"
+                 ::: "r6", "r7", "r10", "r11");
+}