8 files changed, 602 insertions, 0 deletions

diff --git a/arch/mn10300/unit-asb2364/Makefile b/arch/mn10300/unit-asb2364/Makefile
new file mode 100644
index 000000000000..6dd27d65877a
--- /dev/null
+++ b/arch/mn10300/unit-asb2364/Makefile
@@ -0,0 +1,10 @@
+#
+# Makefile for the linux kernel.
+#
+# Note! Dependencies are done automagically by 'make dep', which also
+# removes any old dependencies. DON'T put your own dependencies here
+# unless it's something special (ie not a .c file).
+#
+# Note 2! The CFLAGS definitions are now in the main makefile...
+
+obj-y   := unit-init.o leds.o
diff --git a/arch/mn10300/unit-asb2364/include/unit/clock.h b/arch/mn10300/unit-asb2364/include/unit/clock.h
new file mode 100644
index 000000000000..d34ac9a7508b
--- /dev/null
+++ b/arch/mn10300/unit-asb2364/include/unit/clock.h
@@ -0,0 +1,29 @@
+/* clock.h: unit-specific clocks
+ *
+ * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * Modified by Matsushita Electric Industrial Co., Ltd.
+ * Modifications:
+ *      23-Feb-2007 MEI Add define for watchdog timer.
+ *
+ * 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.
+ */
+
+#ifndef _ASM_UNIT_CLOCK_H
+#define _ASM_UNIT_CLOCK_H
+
+#ifndef __ASSEMBLY__
+
+#define MN10300_IOCLK           100000000UL             /* for DDR800 */
+/*#define MN10300_IOCLK         83333333UL */           /* for DDR667 */
+#define MN10300_IOBCLK          MN10300_IOCLK           /* IOBCLK is equal to IOCLK */
+
+#endif /* !__ASSEMBLY__ */
+
+#define MN10300_WDCLK           27000000UL
+
+#endif /* _ASM_UNIT_CLOCK_H */
diff --git a/arch/mn10300/unit-asb2364/include/unit/fpga-regs.h b/arch/mn10300/unit-asb2364/include/unit/fpga-regs.h
new file mode 100644
index 000000000000..a039a50c91db
--- /dev/null
+++ b/arch/mn10300/unit-asb2364/include/unit/fpga-regs.h
@@ -0,0 +1,50 @@
+/* ASB2364 FPGA registers
+ */
+
+#ifndef _ASM_UNIT_FPGA_REGS_H
+#define _ASM_UNIT_FPGA_REGS_H
+
+#include <asm/cpu-regs.h>
+
+#ifdef __KERNEL__
+
+#define ASB2364_FPGA_REG_RESET_LAN      __SYSREG(0xa9001300, u16)
+#define ASB2364_FPGA_REG_RESET_UART     __SYSREG(0xa9001304, u16)
+#define ASB2364_FPGA_REG_RESET_I2C      __SYSREG(0xa9001308, u16)
+#define ASB2364_FPGA_REG_RESET_USB      __SYSREG(0xa900130c, u16)
+#define ASB2364_FPGA_REG_RESET_AV       __SYSREG(0xa9001310, u16)
+
+#define ASB2364_FPGA_REG_IRQ_LAN        __SYSREG(0xa9001510, u16)
+#define ASB2364_FPGA_REG_IRQ_UART       __SYSREG(0xa9001514, u16)
+#define ASB2364_FPGA_REG_IRQ_I2C        __SYSREG(0xa9001518, u16)
+#define ASB2364_FPGA_REG_IRQ_USB        __SYSREG(0xa900151c, u16)
+#define ASB2364_FPGA_REG_IRQ_FPGA       __SYSREG(0xa9001524, u16)
+
+#define ASB2364_FPGA_REG_MASK_LAN       __SYSREG(0xa9001590, u16)
+#define ASB2364_FPGA_REG_MASK_UART      __SYSREG(0xa9001594, u16)
+#define ASB2364_FPGA_REG_MASK_I2C       __SYSREG(0xa9001598, u16)
+#define ASB2364_FPGA_REG_MASK_USB       __SYSREG(0xa900159c, u16)
+#define ASB2364_FPGA_REG_MASK_FPGA      __SYSREG(0xa90015a4, u16)
+
+#define ASB2364_FPGA_REG_CPLD5_SET1     __SYSREG(0xa9002500, u16)
+#define ASB2364_FPGA_REG_CPLD5_SET2     __SYSREG(0xa9002504, u16)
+#define ASB2364_FPGA_REG_CPLD6_SET1     __SYSREG(0xa9002600, u16)
+#define ASB2364_FPGA_REG_CPLD6_SET2     __SYSREG(0xa9002604, u16)
+#define ASB2364_FPGA_REG_CPLD7_SET1     __SYSREG(0xa9002700, u16)
+#define ASB2364_FPGA_REG_CPLD7_SET2     __SYSREG(0xa9002704, u16)
+#define ASB2364_FPGA_REG_CPLD8_SET1     __SYSREG(0xa9002800, u16)
+#define ASB2364_FPGA_REG_CPLD8_SET2     __SYSREG(0xa9002804, u16)
+#define ASB2364_FPGA_REG_CPLD9_SET1     __SYSREG(0xa9002900, u16)
+#define ASB2364_FPGA_REG_CPLD9_SET2     __SYSREG(0xa9002904, u16)
+#define ASB2364_FPGA_REG_CPLD10_SET1    __SYSREG(0xa9002a00, u16)
+#define ASB2364_FPGA_REG_CPLD10_SET2    __SYSREG(0xa9002a04, u16)
+
+#define SyncExBus()                                     \
+        do {                                            \
+                unsigned short w;                       \
+                w = *(volatile short *)0xa9000000;      \
+        } while (0)
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_UNIT_FPGA_REGS_H */
diff --git a/arch/mn10300/unit-asb2364/include/unit/leds.h b/arch/mn10300/unit-asb2364/include/unit/leds.h
new file mode 100644
index 000000000000..03a3933ad323
--- /dev/null
+++ b/arch/mn10300/unit-asb2364/include/unit/leds.h
@@ -0,0 +1,54 @@
+/* Unit-specific leds
+ *
+ * Copyright (C) 2005 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * 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.
+ */
+
+#ifndef _ASM_UNIT_LEDS_H
+#define _ASM_UNIT_LEDS_H
+
+#include <asm/pio-regs.h>
+#include <asm/cpu-regs.h>
+#include <asm/exceptions.h>
+
+#define MN10300_USE_7SEGLEDS    0
+
+#define ASB2364_7SEGLEDS        __SYSREG(0xA9001630, u32)
+
+/*
+ * use the 7-segment LEDs to indicate states
+ */
+
+#if MN10300_USE_7SEGLEDS
+/* flip the 7-segment LEDs between "Gdb-" and "----" */
+#define mn10300_set_gdbleds(ONOFF)                                      \
+        do {                                                            \
+                ASB2364_7SEGLEDS = (ONOFF) ? 0x8543077f : 0x7f7f7f7f;   \
+        } while (0)
+#else
+#define mn10300_set_gdbleds(ONOFF) do {} while (0)
+#endif
+
+#if MN10300_USE_7SEGLEDS
+/* indicate double-fault by displaying "db-f" on the LEDs */
+#define mn10300_set_dbfleds                     \
+        mov     0x43077f1d,d0           ;       \
+        mov     d0,(ASB2364_7SEGLEDS)
+#else
+#define mn10300_set_dbfleds
+#endif
+
+#ifndef __ASSEMBLY__
+extern void peripheral_leds_display_exception(enum exception_code);
+extern void peripheral_leds_led_chase(void);
+extern void peripheral_leds7x4_display_dec(unsigned int, unsigned int);
+extern void peripheral_leds7x4_display_hex(unsigned int, unsigned int);
+extern void debug_to_serial(const char *, int);
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_UNIT_LEDS_H */
diff --git a/arch/mn10300/unit-asb2364/include/unit/serial.h b/arch/mn10300/unit-asb2364/include/unit/serial.h
new file mode 100644
index 000000000000..7f048bbfdfd7
--- /dev/null
+++ b/arch/mn10300/unit-asb2364/include/unit/serial.h
@@ -0,0 +1,151 @@
+/* Unit-specific 8250 serial ports
+ *
+ * Copyright (C) 2005 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * 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.
+ */
+
+#ifndef _ASM_UNIT_SERIAL_H
+#define _ASM_UNIT_SERIAL_H
+
+#include <asm/cpu-regs.h>
+#include <proc/irq.h>
+#include <unit/fpga-regs.h>
+#include <linux/serial_reg.h>
+
+#define SERIAL_PORT0_BASE_ADDRESS       0xA8200000
+
+#define SERIAL_IRQ      XIRQ1   /* single serial (TL16C550C)    (Lo) */
+
+/*
+ * The ASB2364 has an 12.288 MHz clock
+ * for your UART.
+ *
+ * It'd be nice if someone built a serial card with a 24.576 MHz
+ * clock, since the 16550A is capable of handling a top speed of 1.5
+ * megabits/second; but this requires the faster clock.
+ */
+#define BASE_BAUD (12288000 / 16)
+
+/*
+ * dispose of the /dev/ttyS0 and /dev/ttyS1 serial ports
+ */
+#ifndef CONFIG_GDBSTUB_ON_TTYSx
+
+#define SERIAL_PORT_DFNS                                                \
+        {                                                               \
+                .baud_base      = BASE_BAUD,                            \
+                .irq            = SERIAL_IRQ,                           \
+                .flags          = STD_COM_FLAGS,                        \
+                .iomem_base     = (u8 *) SERIAL_PORT0_BASE_ADDRESS,     \
+                .iomem_reg_shift = 1,                                   \
+                .io_type        = SERIAL_IO_MEM,                        \
+        },
+
+#ifndef __ASSEMBLY__
+
+static inline void __debug_to_serial(const char *p, int n)
+{
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#else /* CONFIG_GDBSTUB_ON_TTYSx */
+
+#define SERIAL_PORT_DFNS /* stolen by gdb-stub */
+
+#if defined(CONFIG_GDBSTUB_ON_TTYS0)
+#define GDBPORT_SERIAL_RX       __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_RX  * 4, u8)
+#define GDBPORT_SERIAL_TX       __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_TX  * 4, u8)
+#define GDBPORT_SERIAL_DLL      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLL * 4, u8)
+#define GDBPORT_SERIAL_DLM      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLM * 4, u8)
+#define GDBPORT_SERIAL_IER      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IER * 4, u8)
+#define GDBPORT_SERIAL_IIR      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IIR * 4, u8)
+#define GDBPORT_SERIAL_FCR      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_FCR * 4, u8)
+#define GDBPORT_SERIAL_LCR      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LCR * 4, u8)
+#define GDBPORT_SERIAL_MCR      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MCR * 4, u8)
+#define GDBPORT_SERIAL_LSR      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LSR * 4, u8)
+#define GDBPORT_SERIAL_MSR      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MSR * 4, u8)
+#define GDBPORT_SERIAL_SCR      __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_SCR * 4, u8)
+#define GDBPORT_SERIAL_IRQ      SERIAL_IRQ
+
+#elif defined(CONFIG_GDBSTUB_ON_TTYS1)
+#error The ASB2364 does not have a /dev/ttyS1
+#endif
+
+#ifndef __ASSEMBLY__
+
+static inline void __debug_to_serial(const char *p, int n)
+{
+        char ch;
+
+#define LSR_WAIT_FOR(STATE)     \
+        do {} while (!(GDBPORT_SERIAL_LSR & UART_LSR_##STATE))
+#define FLOWCTL_QUERY(LINE)     \
+        ({ GDBPORT_SERIAL_MSR & UART_MSR_##LINE; })
+#define FLOWCTL_WAIT_FOR(LINE)  \
+        do {} while (!(GDBPORT_SERIAL_MSR & UART_MSR_##LINE))
+#define FLOWCTL_CLEAR(LINE)     \
+        do { GDBPORT_SERIAL_MCR &= ~UART_MCR_##LINE; } while (0)
+#define FLOWCTL_SET(LINE)       \
+        do { GDBPORT_SERIAL_MCR |= UART_MCR_##LINE; } while (0)
+
+        FLOWCTL_SET(DTR);
+
+        for (; n > 0; n--) {
+                LSR_WAIT_FOR(THRE);
+                FLOWCTL_WAIT_FOR(CTS);
+
+                ch = *p++;
+                if (ch == 0x0a) {
+                        GDBPORT_SERIAL_TX = 0x0d;
+                        LSR_WAIT_FOR(THRE);
+                        FLOWCTL_WAIT_FOR(CTS);
+                }
+                GDBPORT_SERIAL_TX = ch;
+        }
+
+        FLOWCTL_CLEAR(DTR);
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* CONFIG_GDBSTUB_ON_TTYSx */
+
+#define SERIAL_INITIALIZE                                       \
+do {                                                            \
+        /* release reset */                                     \
+        ASB2364_FPGA_REG_RESET_UART = 0x0001;                   \
+        SyncExBus();                                            \
+} while (0)
+
+#define SERIAL_CHECK_INTERRUPT                                  \
+do {                                                            \
+        if ((ASB2364_FPGA_REG_IRQ_UART & 0x0001) == 0x0001) {   \
+                return IRQ_NONE;                                \
+        }                                                       \
+} while (0)
+
+#define SERIAL_CLEAR_INTERRUPT                                  \
+do {                                                            \
+        ASB2364_FPGA_REG_IRQ_UART = 0x0001;                     \
+        SyncExBus();                                            \
+} while (0)
+
+#define SERIAL_SET_INT_MASK                                     \
+do {                                                            \
+        ASB2364_FPGA_REG_MASK_UART = 0x0001;                    \
+        SyncExBus();                                            \
+} while (0)
+
+#define SERIAL_CLEAR_INT_MASK                                   \
+do {                                                            \
+        ASB2364_FPGA_REG_MASK_UART = 0x0000;                    \
+        SyncExBus();                                            \
+} while (0)
+
+#endif /* _ASM_UNIT_SERIAL_H */
diff --git a/arch/mn10300/unit-asb2364/include/unit/timex.h b/arch/mn10300/unit-asb2364/include/unit/timex.h
new file mode 100644
index 000000000000..b5223f705ef8
--- /dev/null
+++ b/arch/mn10300/unit-asb2364/include/unit/timex.h
@@ -0,0 +1,125 @@
+/* timex.h: MN2WS0038 architecture timer specifications
+ *
+ * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * 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.
+ */
+#ifndef _ASM_UNIT_TIMEX_H
+#define _ASM_UNIT_TIMEX_H
+
+#ifndef __ASSEMBLY__
+#include <linux/irq.h>
+#endif /* __ASSEMBLY__ */
+
+#include <asm/timer-regs.h>
+#include <unit/clock.h>
+#include <asm/param.h>
+
+/*
+ * jiffies counter specifications
+ */
+
+#define TMJCBR_MAX              0xffffff        /* 24bit */
+#define TMJCBC                  TMTBC
+
+#define TMJCMD                  TMTMD
+#define TMJCBR                  TMTBR
+#define TMJCIRQ                 TMTIRQ
+#define TMJCICR                 TMTICR
+
+#ifndef __ASSEMBLY__
+
+#define MN10300_SRC_IOBCLK      MN10300_IOBCLK
+
+#ifndef HZ
+# error HZ undeclared.
+#endif /* !HZ */
+
+#define MN10300_JCCLK           (MN10300_SRC_IOBCLK)
+#define MN10300_TSCCLK          (MN10300_SRC_IOBCLK)
+
+#define MN10300_JC_PER_HZ       ((MN10300_JCCLK + HZ / 2) / HZ)
+#define MN10300_TSC_PER_HZ      ((MN10300_TSCCLK + HZ / 2) / HZ)
+
+/* Check bit width of MTM interval value that sets base register */
+#if (MN10300_JC_PER_HZ - 1) > TMJCBR_MAX
+# error MTM tick timer interval value is overflow.
+#endif
+
+
+static inline void startup_jiffies_counter(void)
+{
+        u32 sync;
+
+        TMJCBR = MN10300_JC_PER_HZ - 1;
+        sync = TMJCBR;
+
+        TMJCMD = TMTMD_TMTLDE;
+        TMJCMD = TMTMD_TMTCNE;
+        sync = TMJCMD;
+
+        TMJCICR |= GxICR_ENABLE | GxICR_DETECT | GxICR_REQUEST;
+        sync = TMJCICR;
+}
+
+static inline void shutdown_jiffies_counter(void)
+{
+}
+
+#endif /* !__ASSEMBLY__ */
+
+
+/*
+ * timestamp counter specifications
+ */
+
+#define TMTSCBR_MAX     0xffffffff
+#define TMTSCMD         TMSMD
+#define TMTSCBR         TMSBR
+#define TMTSCBC         TMSBC
+#define TMTSCICR        TMSICR
+
+#ifndef __ASSEMBLY__
+
+static inline void startup_timestamp_counter(void)
+{
+        u32 sync;
+
+        /* set up TMS(Timestamp) 32bit timer register to count real time
+         * - count down from 4Gig-1 to 0 and wrap at IOBCLK rate
+         */
+
+        TMTSCBR = TMTSCBR_MAX;
+        sync = TMTSCBR;
+
+        TMTSCICR = 0;
+        sync = TMTSCICR;
+
+        TMTSCMD = TMTMD_TMTLDE;
+        TMTSCMD = TMTMD_TMTCNE;
+        sync = TMTSCMD;
+}
+
+static inline void shutdown_timestamp_counter(void)
+{
+        TMTSCMD = 0;
+}
+
+/*
+ * we use a cascaded pair of 16-bit down-counting timers to count I/O
+ * clock cycles for the purposes of time keeping
+ */
+typedef unsigned long cycles_t;
+
+static inline cycles_t read_timestamp_counter(void)
+{
+        return (cycles_t)TMTSCBC;
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* _ASM_UNIT_TIMEX_H */
diff --git a/arch/mn10300/unit-asb2364/leds.c b/arch/mn10300/unit-asb2364/leds.c
new file mode 100644
index 000000000000..1ff830c372b3
--- /dev/null
+++ b/arch/mn10300/unit-asb2364/leds.c
@@ -0,0 +1,98 @@
+/* leds.c: ASB2364 peripheral 7seg LEDs x4 support
+ *
+ * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/init.h>
+
+#include <asm/io.h>
+#include <asm/processor.h>
+#include <asm/intctl-regs.h>
+#include <asm/rtc-regs.h>
+#include <unit/leds.h>
+
+#if MN10300_USE_7SEGLEDS
+static const u8 asb2364_led_hex_tbl[16] = {
+        0x80, 0xf2, 0x48, 0x60, 0x32, 0x24, 0x04, 0xf0,
+        0x00, 0x20, 0x10, 0x06, 0x8c, 0x42, 0x0c, 0x1c
+};
+
+static const u32 asb2364_led_chase_tbl[6] = {
+        ~0x02020202,    /* top          - segA */
+        ~0x04040404,    /* right top    - segB */
+        ~0x08080808,    /* right bottom - segC */
+        ~0x10101010,    /* bottom       - segD */
+        ~0x20202020,    /* left bottom  - segE */
+        ~0x40404040,    /* left top     - segF */
+};
+
+static unsigned asb2364_led_chase;
+
+void peripheral_leds7x4_display_dec(unsigned int val, unsigned int points)
+{
+        u32 leds;
+
+        leds = asb2364_led_hex_tbl[(val/1000) % 10];
+        leds <<= 8;
+        leds |= asb2364_led_hex_tbl[(val/100) % 10];
+        leds <<= 8;
+        leds |= asb2364_led_hex_tbl[(val/10) % 10];
+        leds <<= 8;
+        leds |= asb2364_led_hex_tbl[val % 10];
+        leds |= points^0x01010101;
+
+        ASB2364_7SEGLEDS = leds;
+}
+
+void peripheral_leds7x4_display_hex(unsigned int val, unsigned int points)
+{
+        u32 leds;
+
+        leds = asb2364_led_hex_tbl[(val/1000) % 10];
+        leds <<= 8;
+        leds |= asb2364_led_hex_tbl[(val/100) % 10];
+        leds <<= 8;
+        leds |= asb2364_led_hex_tbl[(val/10) % 10];
+        leds <<= 8;
+        leds |= asb2364_led_hex_tbl[val % 10];
+        leds |= points^0x01010101;
+
+        ASB2364_7SEGLEDS = leds;
+}
+
+/* display triple horizontal bar and exception code */
+void peripheral_leds_display_exception(enum exception_code code)
+{
+        u32 leds;
+
+        leds = asb2364_led_hex_tbl[(code/0x100) % 0x10];
+        leds <<= 8;
+        leds |= asb2364_led_hex_tbl[(code/0x10) % 0x10];
+        leds <<= 8;
+        leds |= asb2364_led_hex_tbl[code % 0x10];
+        leds |= 0x6d010101;
+
+        ASB2364_7SEGLEDS = leds;
+}
+
+void peripheral_leds_led_chase(void)
+{
+        ASB2364_7SEGLEDS = asb2364_led_chase_tbl[asb2364_led_chase];
+        asb2364_led_chase++;
+        if (asb2364_led_chase >= 6)
+                asb2364_led_chase = 0;
+}
+#else  /* MN10300_USE_7SEGLEDS */
+void peripheral_leds7x4_display_dec(unsigned int val, unsigned int points) { }
+void peripheral_leds7x4_display_hex(unsigned int val, unsigned int points) { }
+void peripheral_leds_display_exception(enum exception_code code) { }
+void peripheral_leds_led_chase(void) { }
+#endif /* MN10300_USE_7SEGLEDS */
diff --git a/arch/mn10300/unit-asb2364/unit-init.c b/arch/mn10300/unit-asb2364/unit-init.c
new file mode 100644
index 000000000000..a3fc09b43f84
--- /dev/null
+++ b/arch/mn10300/unit-asb2364/unit-init.c
@@ -0,0 +1,85 @@
+/* ASB2364 initialisation
+ *
+ * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+
+#include <asm/io.h>
+#include <asm/setup.h>
+#include <asm/processor.h>
+#include <asm/irq.h>
+#include <asm/intctl-regs.h>
+
+/*
+ * initialise some of the unit hardware before gdbstub is set up
+ */
+asmlinkage void __init unit_init(void)
+{
+        /* set up the external interrupts */
+
+        /* XIRQ[0]: NAND RXBY */
+        /* SET_XIRQ_TRIGGER(0, XIRQ_TRIGGER_LOWLEVEL); */
+
+        /* XIRQ[1]: LAN, UART, I2C, USB, PCI, FPGA */
+        SET_XIRQ_TRIGGER(1, XIRQ_TRIGGER_LOWLEVEL);
+
+        /* XIRQ[2]: Extend Slot 1-9 */
+        /* SET_XIRQ_TRIGGER(2, XIRQ_TRIGGER_LOWLEVEL); */
+
+#if defined(CONFIG_EXT_SERIAL_IRQ_LEVEL) &&     \
+    defined(CONFIG_ETHERNET_IRQ_LEVEL) &&       \
+    (CONFIG_EXT_SERIAL_IRQ_LEVEL != CONFIG_ETHERNET_IRQ_LEVEL)
+# error CONFIG_EXT_SERIAL_IRQ_LEVEL != CONFIG_ETHERNET_IRQ_LEVEL
+#endif
+
+#if defined(CONFIG_EXT_SERIAL_IRQ_LEVEL)
+        set_intr_level(XIRQ1, NUM2GxICR_LEVEL(CONFIG_EXT_SERIAL_IRQ_LEVEL));
+#elif defined(CONFIG_ETHERNET_IRQ_LEVEL)
+        set_intr_level(XIRQ1, NUM2GxICR_LEVEL(CONFIG_ETHERNET_IRQ_LEVEL));
+#endif
+}
+
+/*
+ * initialise the rest of the unit hardware after gdbstub is ready
+ */
+asmlinkage void __init unit_setup(void)
+{
+
+}
+
+/*
+ * initialise the external interrupts used by a unit of this type
+ */
+void __init unit_init_IRQ(void)
+{
+        unsigned int extnum;
+
+        for (extnum = 0 ; extnum < NR_XIRQS ; extnum++) {
+                switch (GET_XIRQ_TRIGGER(extnum)) {
+                        /* LEVEL triggered interrupts should be made
+                         * post-ACK'able as they hold their lines until
+                         * serviced
+                         */
+                case XIRQ_TRIGGER_HILEVEL:
+                case XIRQ_TRIGGER_LOWLEVEL:
+                        mn10300_set_lateack_irq_type(XIRQ2IRQ(extnum));
+                        break;
+                default:
+                        break;
+                }
+        }
+
+#define IRQCTL  __SYSREG(0xd5000090, u32)
+        IRQCTL |= 0x02;
+}