Merge tag 'xtensa-next-20121008' of git://github.com/czankel/xtensa-linux

Pull Xtensa patchset from Chris Zankel:
 "The Xtensa tree has been broken for some time now, and this patchset
  brings it back to life.  It has been part of the linux-next tree for
  some time.

  Most changes are inside the xtensa subdirectory; the other changes
  mostly add another rule to already existing #ifdefs to exclude Xtensa,
  where required.  The only 'common' change is to add two more sections
  ('.xt.prop' and '.xt.lit') to the white list in modpost."

* tag 'xtensa-next-20121008' of git://github.com/czankel/xtensa-linux: (27 commits)
  xtensa: Setup CROSS_COMPILE at the top
  xtensa: drop CONFIG_EMBEDDED_RAMDISK
  xtensa: fix TIOCGSERIAL and TIOCSSERIAL definitions
  xtensa: provide dummy gcc intrinsics
  xtensa: add missing symbol exports
  parport: disable for xtensa arch
  xtensa: rename MISC SR definition to avoid name clashes
  hisax: disable build for big-endian xtensa
  xtensa: fix CODA build
  xtensa: fix parallel make
  xtensa: ISS: drop unused io.c
  xtensa: ISS: exit simulator in case of halt or poweroff
  xtensa: ISS: change keyboard polling rate
  xtensa: ISS: add platform_pcibios_init
  xtensa: ISS: add dummy serial.h for ISS platform
  xtensa: change default platform clock frequency to 10MHz
  xtensa: add ARCH_WANT_OPTIONAL_GPIOLIB to xtensa config
  xtensa: set NO_IOPORT to 'n' by default
  xtensa: adopt generic io routines
  xtensa: fix ioremap
  ...

29 files changed, 157 insertions, 469 deletions

diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 744f5ee4ba4..cdcb48adee4 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -11,6 +11,9 @@ config XTENSA
         select HAVE_GENERIC_HARDIRQS
         select GENERIC_IRQ_SHOW
         select GENERIC_CPU_DEVICES
+        select MODULES_USE_ELF_RELA
+        select GENERIC_PCI_IOMAP
+        select ARCH_WANT_OPTIONAL_GPIOLIB
         help
           Xtensa processors are 32-bit RISC machines designed by Tensilica
           primarily for embedded systems.  These processors are both
@@ -35,7 +38,7 @@ config ARCH_HAS_ILOG2_U64
         def_bool n
 
 config NO_IOPORT
-        def_bool y
+        def_bool n
 
 config HZ
         int
@@ -142,6 +145,7 @@ config XTENSA_PLATFORM_XT2000
 config XTENSA_PLATFORM_S6105
         bool "S6105"
         select SERIAL_CONSOLE
+        select NO_IOPORT
 
 endchoice
 
@@ -205,23 +209,6 @@ source "drivers/Kconfig"
 
 source "fs/Kconfig"
 
-menu "Xtensa initrd options"
-        depends on BLK_DEV_INITRD
-
-config EMBEDDED_RAMDISK
-        bool "Embed root filesystem ramdisk into the kernel"
-
-config EMBEDDED_RAMDISK_IMAGE
-        string "Filename of gzipped ramdisk image"
-        depends on EMBEDDED_RAMDISK
-        default "ramdisk.gz"
-        help
-          This is the filename of the ramdisk image to be built into the
-          kernel.  Relative pathnames are relative to arch/xtensa/boot/ramdisk/.
-          The ramdisk image is not part of the kernel distribution; you must
-          provide one yourself.
-endmenu
-
 source "arch/xtensa/Kconfig.debug"
 
 source "security/Kconfig"
diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile
index f973754ddf9..bb5ba61723f 100644
--- a/arch/xtensa/Makefile
+++ b/arch/xtensa/Makefile
@@ -21,6 +21,18 @@ variant-$(CONFIG_XTENSA_VARIANT_LINUX_CUSTOM)	:= custom
 VARIANT = $(variant-y)
 export VARIANT
 
+# Test for cross compiling
+
+ifneq ($(VARIANT),)
+  COMPILE_ARCH = $(shell uname -m)
+
+  ifneq ($(COMPILE_ARCH), xtensa)
+    ifndef CROSS_COMPILE
+      CROSS_COMPILE = xtensa_$(VARIANT)-
+    endif
+  endif
+endif
+
 # Platform configuration
 
 platform-$(CONFIG_XTENSA_PLATFORM_XT2000)       := xt2000
@@ -31,7 +43,7 @@ PLATFORM = $(platform-y)
 export PLATFORM
 
 # temporarily until string.h is fixed
-KBUILD_CFLAGS += -ffreestanding
+KBUILD_CFLAGS += -ffreestanding -D__linux__
 
 KBUILD_CFLAGS += -pipe -mlongcalls
 
@@ -48,24 +60,6 @@ endif
 
 KBUILD_DEFCONFIG := iss_defconfig
 
-# ramdisk/initrd support
-# You need a compressed ramdisk image, named ramdisk.gz in
-# arch/xtensa/boot/ramdisk
-
-core-$(CONFIG_EMBEDDED_RAMDISK) += arch/xtensa/boot/ramdisk/
-
-# Test for cross compiling
-
-ifneq ($(VARIANT),)
-  COMPILE_ARCH = $(shell uname -m)
-
-  ifneq ($(COMPILE_ARCH), xtensa)
-    ifndef CROSS_COMPILE
-      CROSS_COMPILE = xtensa_$(VARIANT)-
-    endif
-  endif
-endif
-
 # Only build variant and/or platform if it includes a Makefile
 
 buildvar := $(shell test -e $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/)
@@ -87,7 +81,7 @@ all: zImage
 
 bzImage : zImage
 
-zImage zImage.initrd: vmlinux
+zImage: vmlinux
         $(Q)$(MAKE) $(build)=$(boot) $@
 
 define archhelp
diff --git a/arch/xtensa/boot/Makefile b/arch/xtensa/boot/Makefile
index 70fd1453e17..4018f899419 100644
--- a/arch/xtensa/boot/Makefile
+++ b/arch/xtensa/boot/Makefile
@@ -25,7 +25,7 @@ bootdir-$(CONFIG_XTENSA_PLATFORM_ISS)	 += boot-elf
 bootdir-$(CONFIG_XTENSA_PLATFORM_XT2000) += boot-redboot boot-elf
 
 
-zImage zImage.initrd Image Image.initrd: $(bootdir-y)
+zImage Image: $(bootdir-y)
 
 $(bootdir-y): $(addprefix $(obj)/,$(subdir-y)) \
               $(addprefix $(obj)/,$(host-progs))
diff --git a/arch/xtensa/boot/boot-elf/Makefile b/arch/xtensa/boot/boot-elf/Makefile
index 08e8814f8c7..f10992b8902 100644
--- a/arch/xtensa/boot/boot-elf/Makefile
+++ b/arch/xtensa/boot/boot-elf/Makefile
@@ -20,34 +20,18 @@ boot-y		:= bootstrap.o
 
 OBJS            := $(addprefix $(obj)/,$(boot-y))
 
-Image:  vmlinux $(OBJS) arch/$(ARCH)/boot/boot-elf/boot.lds
+vmlinux.tmp: vmlinux
         $(OBJCOPY) --strip-all -R .comment -R .note.gnu.build-id -O binary \
-                vmlinux vmlinux.tmp
-        $(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
-                --add-section image=vmlinux.tmp \
-                --set-section-flags image=contents,alloc,load,load,data \
-                $(OBJS) $@.tmp
-        $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) \
-                -T arch/$(ARCH)/boot/boot-elf/boot.lds \
-                -o arch/$(ARCH)/boot/$@.elf $@.tmp
-        rm -f $@.tmp vmlinux.tmp
+                $^ $@
 
-Image.initrd:   vmlinux $(OBJS)
-        $(OBJCOPY) --strip-all -R .comment -R .note.gnu.build-id -O binary \
-                --add-section .initrd=arch/$(ARCH)/boot/ramdisk \
-                --set-section-flags .initrd=contents,alloc,load,load,data \
-                vmlinux vmlinux.tmp
+Image:  vmlinux.tmp $(OBJS) arch/$(ARCH)/boot/boot-elf/boot.lds
         $(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
                 --add-section image=vmlinux.tmp \
                 --set-section-flags image=contents,alloc,load,load,data \
                 $(OBJS) $@.tmp
         $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) \
-                -T $(srctree)/arch/$(ARCH)/boot/boot-elf/boot.ld \
+                -T arch/$(ARCH)/boot/boot-elf/boot.lds \
                 -o arch/$(ARCH)/boot/$@.elf $@.tmp
-        rm -f $@.tmp vmlinux.tmp
-
 
 zImage: Image
 
-zImage.initrd:  Image.initrd
-
diff --git a/arch/xtensa/boot/boot-elf/boot.lds.S b/arch/xtensa/boot/boot-elf/boot.lds.S
index 4e53b74dc44..7b646e0a648 100644
--- a/arch/xtensa/boot/boot-elf/boot.lds.S
+++ b/arch/xtensa/boot/boot-elf/boot.lds.S
@@ -33,13 +33,6 @@ SECTIONS
 
         __reloc_end = . ;
 
-        .initrd ALIGN(0x10) :
-        {
-                boot_initrd_start = . ;
-                *(.initrd)
-                boot_initrd_end = .;
-        }
-
         . = ALIGN(0x10);
         __image_load = . ;
         .image 0xd0001000:
diff --git a/arch/xtensa/boot/boot-redboot/Makefile b/arch/xtensa/boot/boot-redboot/Makefile
index 872029b8443..25a78c6b153 100644
--- a/arch/xtensa/boot/boot-redboot/Makefile
+++ b/arch/xtensa/boot/boot-redboot/Makefile
@@ -21,15 +21,17 @@ LIBS	:= arch/xtensa/boot/lib/lib.a arch/xtensa/lib/lib.a
 
 LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
 
-zImage: vmlinux $(OBJS) $(LIBS)
+vmlinux.tmp: vmlinux
         $(OBJCOPY) --strip-all -R .comment -R .note.gnu.build-id -O binary \
-                vmlinux vmlinux.tmp
-        gzip -vf9 vmlinux.tmp
+                $^ $@
+
+vmlinux.tmp.gz: vmlinux.tmp
+        $(GZIP) $(GZIP_FLAGS) $^ > $@
+
+zImage: vmlinux.tmp.gz $(OBJS) $(LIBS)
         $(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
                 --add-section image=vmlinux.tmp.gz \
                 --set-section-flags image=contents,alloc,load,load,data \
                 $(OBJS) $@.tmp
         $(LD) $(LD_ARGS) -o $@.elf $@.tmp $(LIBS) -L/xtensa-elf/lib $(LIBGCC)
         $(OBJCOPY) -S -O binary $@.elf arch/$(ARCH)/boot/$@.redboot
-        rm -f $@.tmp $@.elf vmlinux.tmp.gz
-
diff --git a/arch/xtensa/boot/boot-redboot/boot.ld b/arch/xtensa/boot/boot-redboot/boot.ld
index 774db20d11f..5bbcaf9e830 100644
--- a/arch/xtensa/boot/boot-redboot/boot.ld
+++ b/arch/xtensa/boot/boot-redboot/boot.ld
@@ -31,13 +31,6 @@ SECTIONS
 
         __reloc_end = . ;
 
-        .initrd ALIGN(0x10) :
-        {
-                boot_initrd_start = . ;
-                *(.initrd)
-                boot_initrd_end = .;
-        }
-
         . = ALIGN(0x10);
         __image_load = . ;
         .image 0xd0001000: AT(__image_load)
diff --git a/arch/xtensa/boot/boot-redboot/bootstrap.S b/arch/xtensa/boot/boot-redboot/bootstrap.S
index 5582e8cfac8..4c316cd28a5 100644
--- a/arch/xtensa/boot/boot-redboot/bootstrap.S
+++ b/arch/xtensa/boot/boot-redboot/bootstrap.S
@@ -226,17 +226,7 @@ _reloc:
 
         isync
 
-        movi    a5, __start
-        movi    a3, boot_initrd_start
-        movi    a4, boot_initrd_end
-        sub     a3, a3, a5
-        sub     a4, a4, a5
-        add     a3, a0, a3
-        add     a4, a0, a4
-
         # a2  Boot parameter list
-        # a3  initrd_start (virtual load address)
-        # a4  initrd_end   (virtual load address)
 
         movi    a0, _image_start
         jx      a0
diff --git a/arch/xtensa/boot/ramdisk/Makefile b/arch/xtensa/boot/ramdisk/Makefile
deleted file mode 100644
index b12f7635243..00000000000
--- a/arch/xtensa/boot/ramdisk/Makefile
+++ /dev/null
@@ -1,23 +0,0 @@
-#
-# Makefile for a ramdisk image
-#
-
-BIG_ENDIAN      := $(shell echo -e "\#ifdef __XTENSA_EL__\nint little;\n\#else\nint big;\n\#endif" | $(CC) -E -|grep -c big)
-
-ifeq ($(BIG_ENDIAN),1)
-OBJCOPY_ARGS    := -O elf32-xtensa-be
-else
-OBJCOPY_ARGS    := -O elf32-xtensa-le
-endif
-
-obj-y = ramdisk.o
-
-RAMDISK_IMAGE = arch/$(ARCH)/boot/ramdisk/$(CONFIG_EMBEDDED_RAMDISK_IMAGE)
-
-arch/$(ARCH)/boot/ramdisk/ramdisk.o:
-        $(Q)echo -e "dummy:" | $(AS) -o $@;
-        $(Q)$(OBJCOPY) $(OBJCOPY_ARGS)                                      \
-                --add-section .initrd=$(RAMDISK_IMAGE)                      \
-                --set-section-flags .initrd=contents,alloc,load,load,data   \
-                arch/$(ARCH)/boot/ramdisk/ramdisk.o $@
-
diff --git a/arch/xtensa/configs/s6105_defconfig b/arch/xtensa/configs/s6105_defconfig
index 550e8ed5b5c..eaf1b8fc655 100644
--- a/arch/xtensa/configs/s6105_defconfig
+++ b/arch/xtensa/configs/s6105_defconfig
@@ -541,11 +541,6 @@ CONFIG_MSDOS_PARTITION=y
 # CONFIG_DLM is not set
 
 #
-# Xtensa initrd options
-#
-# CONFIG_EMBEDDED_RAMDISK is not set
-
-#
 # Kernel hacking
 #
 CONFIG_PRINTK_TIME=y
diff --git a/arch/xtensa/include/asm/io.h b/arch/xtensa/include/asm/io.h
index 4beb43c087d..e6be5b9091c 100644
--- a/arch/xtensa/include/asm/io.h
+++ b/arch/xtensa/include/asm/io.h
@@ -25,184 +25,54 @@
 #define XCHAL_KIO_SIZE          0x10000000
 
 #define IOADDR(x)               (XCHAL_KIO_BYPASS_VADDR + (x))
+#define IO_SPACE_LIMIT ~0
 
+#ifdef CONFIG_MMU
 /*
- * swap functions to change byte order from little-endian to big-endian and
- * vice versa.
- */
-
-static inline unsigned short _swapw (unsigned short v)
-{
-        return (v << 8) | (v >> 8);
-}
-
-static inline unsigned int _swapl (unsigned int v)
-{
-        return (v << 24) | ((v & 0xff00) << 8) | ((v >> 8) & 0xff00) | (v >> 24);
-}
-
-/*
- * Change virtual addresses to physical addresses and vv.
- * These are trivial on the 1:1 Linux/Xtensa mapping
- */
-
-static inline unsigned long virt_to_phys(volatile void * address)
-{
-        return __pa(address);
-}
-
-static inline void * phys_to_virt(unsigned long address)
-{
-        return __va(address);
-}
-
-/*
- * virt_to_bus and bus_to_virt are deprecated.
- */
-
-#define virt_to_bus(x)  virt_to_phys(x)
-#define bus_to_virt(x)  phys_to_virt(x)
-
-/*
- * Return the virtual (cached) address for the specified bus memory.
+ * Return the virtual address for the specified bus memory.
  * Note that we currently don't support any address outside the KIO segment.
  */
-
-static inline void *ioremap(unsigned long offset, unsigned long size)
+static inline void __iomem *ioremap_nocache(unsigned long offset,
+                unsigned long size)
 {
-#ifdef CONFIG_MMU
         if (offset >= XCHAL_KIO_PADDR
-            && offset < XCHAL_KIO_PADDR + XCHAL_KIO_SIZE)
+            && offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE)
                 return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_BYPASS_VADDR);
         else
                 BUG();
-#else
-        return (void *)offset;
-#endif
 }
 
-static inline void *ioremap_nocache(unsigned long offset, unsigned long size)
+static inline void __iomem *ioremap_cache(unsigned long offset,
+                unsigned long size)
 {
-#ifdef CONFIG_MMU
         if (offset >= XCHAL_KIO_PADDR
-            && offset < XCHAL_KIO_PADDR + XCHAL_KIO_SIZE)
+            && offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE)
                 return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_CACHED_VADDR);
         else
                 BUG();
-#else
-        return (void *)offset;
-#endif
-}
-
-static inline void iounmap(void *addr)
-{
 }
 
-/*
- * Generic I/O
- */
-
-#define readb(addr) \
-        ({ unsigned char __v = (*(volatile unsigned char *)(addr)); __v; })
-#define readw(addr) \
-        ({ unsigned short __v = (*(volatile unsigned short *)(addr)); __v; })
-#define readl(addr) \
-        ({ unsigned int __v = (*(volatile unsigned int *)(addr)); __v; })
-#define writeb(b, addr) (void)((*(volatile unsigned char *)(addr)) = (b))
-#define writew(b, addr) (void)((*(volatile unsigned short *)(addr)) = (b))
-#define writel(b, addr) (void)((*(volatile unsigned int *)(addr)) = (b))
+#define ioremap_wc ioremap_nocache
 
-static inline __u8 __raw_readb(const volatile void __iomem *addr)
-{
-          return *(__force volatile __u8 *)(addr);
-}
-static inline __u16 __raw_readw(const volatile void __iomem *addr)
-{
-          return *(__force volatile __u16 *)(addr);
-}
-static inline __u32 __raw_readl(const volatile void __iomem *addr)
+static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
 {
-          return *(__force volatile __u32 *)(addr);
+        return ioremap_nocache(offset, size);
 }
-static inline void __raw_writeb(__u8 b, volatile void __iomem *addr)
-{
-          *(__force volatile __u8 *)(addr) = b;
-}
-static inline void __raw_writew(__u16 b, volatile void __iomem *addr)
-{
-          *(__force volatile __u16 *)(addr) = b;
-}
-static inline void __raw_writel(__u32 b, volatile void __iomem *addr)
+
+static inline void iounmap(volatile void __iomem *addr)
 {
-          *(__force volatile __u32 *)(addr) = b;
 }
-
-/* These are the definitions for the x86 IO instructions
- * inb/inw/inl/outb/outw/outl, the "string" versions
- * insb/insw/insl/outsb/outsw/outsl, and the "pausing" versions
- * inb_p/inw_p/...
- * The macros don't do byte-swapping.
- */
-
-#define inb(port)               readb((u8 *)((port)))
-#define outb(val, port)         writeb((val),(u8 *)((unsigned long)(port)))
-#define inw(port)               readw((u16 *)((port)))
-#define outw(val, port)         writew((val),(u16 *)((unsigned long)(port)))
-#define inl(port)               readl((u32 *)((port)))
-#define outl(val, port)         writel((val),(u32 *)((unsigned long)(port)))
-
-#define inb_p(port)             inb((port))
-#define outb_p(val, port)       outb((val), (port))
-#define inw_p(port)             inw((port))
-#define outw_p(val, port)       outw((val), (port))
-#define inl_p(port)             inl((port))
-#define outl_p(val, port)       outl((val), (port))
-
-extern void insb (unsigned long port, void *dst, unsigned long count);
-extern void insw (unsigned long port, void *dst, unsigned long count);
-extern void insl (unsigned long port, void *dst, unsigned long count);
-extern void outsb (unsigned long port, const void *src, unsigned long count);
-extern void outsw (unsigned long port, const void *src, unsigned long count);
-extern void outsl (unsigned long port, const void *src, unsigned long count);
-
-#define IO_SPACE_LIMIT ~0
-
-#define memset_io(a,b,c)       memset((void *)(a),(b),(c))
-#define memcpy_fromio(a,b,c)   memcpy((a),(void *)(b),(c))
-#define memcpy_toio(a,b,c)      memcpy((void *)(a),(b),(c))
-
-/* At this point the Xtensa doesn't provide byte swap instructions */
-
-#ifdef __XTENSA_EB__
-# define in_8(addr) (*(u8*)(addr))
-# define in_le16(addr) _swapw(*(u16*)(addr))
-# define in_le32(addr) _swapl(*(u32*)(addr))
-# define out_8(b, addr) *(u8*)(addr) = (b)
-# define out_le16(b, addr) *(u16*)(addr) = _swapw(b)
-# define out_le32(b, addr) *(u32*)(addr) = _swapl(b)
-#elif defined(__XTENSA_EL__)
-# define in_8(addr)  (*(u8*)(addr))
-# define in_le16(addr) (*(u16*)(addr))
-# define in_le32(addr) (*(u32*)(addr))
-# define out_8(b, addr) *(u8*)(addr) = (b)
-# define out_le16(b, addr) *(u16*)(addr) = (b)
-# define out_le32(b, addr) *(u32*)(addr) = (b)
-#else
-# error processor byte order undefined!
-#endif
-
-
-/*
- * Convert a physical pointer to a virtual kernel pointer for /dev/mem access
- */
-#define xlate_dev_mem_ptr(p)    __va(p)
+#endif /* CONFIG_MMU */
 
 /*
- * Convert a virtual cached pointer to an uncached pointer
+ * Generic I/O
  */
-#define xlate_dev_kmem_ptr(p)   p
-
+#define readb_relaxed readb
+#define readw_relaxed readw
+#define readl_relaxed readl
 
 #endif  /* __KERNEL__ */
 
+#include <asm-generic/io.h>
+
 #endif  /* _XTENSA_IO_H */
diff --git a/arch/xtensa/include/asm/ioctls.h b/arch/xtensa/include/asm/ioctls.h
index fd1d1369a40..2aa4cd9f0ce 100644
--- a/arch/xtensa/include/asm/ioctls.h
+++ b/arch/xtensa/include/asm/ioctls.h
@@ -71,8 +71,8 @@
 #define TIOCSSOFTCAR    _IOW('T', 26, unsigned int)
 #define TIOCLINUX       _IOW('T', 28, char)
 #define TIOCCONS        _IO('T', 29)
-#define TIOCGSERIAL     _IOR('T', 30, struct serial_struct)
-#define TIOCSSERIAL     _IOW('T', 31, struct serial_struct)
+#define TIOCGSERIAL     0x803C541E      /*_IOR('T', 30, struct serial_struct)*/
+#define TIOCSSERIAL     0x403C541F      /*_IOW('T', 31, struct serial_struct)*/
 #define TIOCPKT         _IOW('T', 32, int)
 # define TIOCPKT_DATA            0
 # define TIOCPKT_FLUSHREAD       1
diff --git a/arch/xtensa/include/asm/regs.h b/arch/xtensa/include/asm/regs.h
index d4baed24692..a3075b12aff 100644
--- a/arch/xtensa/include/asm/regs.h
+++ b/arch/xtensa/include/asm/regs.h
@@ -66,7 +66,7 @@
 #define ICOUNTLEVEL     237
 #define EXCVADDR        238
 #define CCOMPARE        240
-#define MISC            244
+#define MISC_SR         244
 
 /*  Special names for read-only and write-only interrupt registers.  */
 
diff --git a/arch/xtensa/kernel/Makefile b/arch/xtensa/kernel/Makefile
index 59fc3fe1557..f36cef5a62f 100644
--- a/arch/xtensa/kernel/Makefile
+++ b/arch/xtensa/kernel/Makefile
@@ -6,7 +6,7 @@ extra-y := head.o vmlinux.lds
 
 obj-y := align.o entry.o irq.o coprocessor.o process.o ptrace.o \
          setup.o signal.o syscall.o time.o traps.o vectors.o platform.o  \
-         pci-dma.o io.o
+         pci-dma.o
 
 obj-$(CONFIG_KGDB) += xtensa-stub.o
 obj-$(CONFIG_PCI) += pci.o
@@ -24,6 +24,7 @@ obj-$(CONFIG_MODULES) += xtensa_ksyms.o module.o
 # Replicate rules in scripts/Makefile.build
 
 sed-y = -e 's/\*(\(\.[a-z]*it\|\.ref\|\)\.text)/*(\1.literal \1.text)/g'    \
+        -e 's/\.text\.unlikely/.literal.unlikely .text.unlikely/g' \
         -e 's/\*(\(\.text\.[a-z]*\))/*(\1.literal \1)/g'
 
 quiet_cmd__cpp_lds_S = LDS     $@
diff --git a/arch/xtensa/kernel/io.c b/arch/xtensa/kernel/io.c
deleted file mode 100644
index 5b65269b1d2..00000000000
--- a/arch/xtensa/kernel/io.c
+++ /dev/null
@@ -1,75 +0,0 @@
-/*
- * arch/xtensa/io.c
- *
- * IO primitives
- *
- * 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.
- *
- * Copied from sparc.
- *
- * Chris Zankel <chris@zankel.net>
- *
- */
-
-#include <asm/io.h>
-#include <asm/byteorder.h>
-
-void outsb(unsigned long addr, const void *src, unsigned long count) {
-        while (count) {
-                count -= 1;
-                writeb(*(const char *)src, addr);
-                src += 1;
-                addr += 1;
-        }
-}
-
-void outsw(unsigned long addr, const void *src, unsigned long count) {
-        while (count) {
-                count -= 2;
-                writew(*(const short *)src, addr);
-                src += 2;
-                addr += 2;
-        }
-}
-
-void outsl(unsigned long addr, const void *src, unsigned long count) {
-        while (count) {
-                count -= 4;
-                writel(*(const long *)src, addr);
-                src += 4;
-                addr += 4;
-        }
-}
-
-void insb(unsigned long addr, void *dst, unsigned long count) {
-        while (count) {
-                count -= 1;
-                *(unsigned char *)dst = readb(addr);
-                dst += 1;
-                addr += 1;
-        }
-}
-
-void insw(unsigned long addr, void *dst, unsigned long count) {
-        while (count) {
-                count -= 2;
-                *(unsigned short *)dst = readw(addr);
-                dst += 2;
-                addr += 2;
-        }
-}
-
-void insl(unsigned long addr, void *dst, unsigned long count) {
-        while (count) {
-                count -= 4;
-                /*
-                 * XXX I am sure we are in for an unaligned trap here.
-                 */
-                *(unsigned long *)dst = readl(addr);
-                dst += 4;
-                addr += 4;
-        }
-}
diff --git a/arch/xtensa/kernel/irq.c b/arch/xtensa/kernel/irq.c
index 4340ee076bd..98e77c3ef1c 100644
--- a/arch/xtensa/kernel/irq.c
+++ b/arch/xtensa/kernel/irq.c
@@ -84,12 +84,12 @@ static void xtensa_irq_unmask(struct irq_data *d)
 static void xtensa_irq_enable(struct irq_data *d)
 {
         variant_irq_enable(d->irq);
-        xtensa_irq_unmask(d->irq);
+        xtensa_irq_unmask(d);
 }
 
 static void xtensa_irq_disable(struct irq_data *d)
 {
-        xtensa_irq_mask(d->irq);
+        xtensa_irq_mask(d);
         variant_irq_disable(d->irq);
 }
 
diff --git a/arch/xtensa/kernel/pci-dma.c b/arch/xtensa/kernel/pci-dma.c
index 2783fda76dd..2d9cc6dbfd7 100644
--- a/arch/xtensa/kernel/pci-dma.c
+++ b/arch/xtensa/kernel/pci-dma.c
@@ -21,6 +21,7 @@
 #include <linux/string.h>
 #include <linux/pci.h>
 #include <linux/gfp.h>
+#include <linux/module.h>
 #include <asm/io.h>
 #include <asm/cacheflush.h>
 
@@ -62,6 +63,7 @@ dma_alloc_coherent(struct device *dev,size_t size,dma_addr_t *handle,gfp_t flag)
 
         return (void*)uncached;
 }
+EXPORT_SYMBOL(dma_alloc_coherent);
 
 void dma_free_coherent(struct device *hwdev, size_t size,
                          void *vaddr, dma_addr_t dma_handle)
@@ -73,6 +75,7 @@ void dma_free_coherent(struct device *hwdev, size_t size,
 
         free_pages(addr, get_order(size));
 }
+EXPORT_SYMBOL(dma_free_coherent);
 
 
 void consistent_sync(void *vaddr, size_t size, int direction)
@@ -92,3 +95,4 @@ void consistent_sync(void *vaddr, size_t size, int direction)
                 break;
         }
 }
+EXPORT_SYMBOL(consistent_sync);
diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c
index 54354de38a7..126c1883940 100644
--- a/arch/xtensa/kernel/pci.c
+++ b/arch/xtensa/kernel/pci.c
@@ -333,7 +333,7 @@ __pci_mmap_set_pgprot(struct pci_dev *dev, struct vm_area_struct *vma,
         int prot = pgprot_val(vma->vm_page_prot);
 
         /* Set to write-through */
-        prot &= ~_PAGE_NO_CACHE;
+        prot = (prot & _PAGE_CA_MASK) | _PAGE_CA_WT;
 #if 0
         if (!write_combine)
                 prot |= _PAGE_WRITETHRU;
diff --git a/arch/xtensa/kernel/platform.c b/arch/xtensa/kernel/platform.c
index 1b91a97f1d8..97230e46cbe 100644
--- a/arch/xtensa/kernel/platform.c
+++ b/arch/xtensa/kernel/platform.c
@@ -40,8 +40,8 @@ _F(int,  pcibios_fixup, (void), { return 0; });
 #ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
 _F(void, calibrate_ccount, (void),
 {
-  printk ("ERROR: Cannot calibrate cpu frequency! Assuming 100MHz.\n");
-  ccount_per_jiffy = 100 * (1000000UL/HZ);
+        pr_err("ERROR: Cannot calibrate cpu frequency! Assuming 10MHz.\n");
+        ccount_per_jiffy = 10 * (1000000UL/HZ);
 });
 #endif
 
diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index 17e746f7be6..270360d9806 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -60,8 +60,6 @@ struct rtc_ops *rtc_ops;
 #ifdef CONFIG_BLK_DEV_INITRD
 extern void *initrd_start;
 extern void *initrd_end;
-extern void *__initrd_start;
-extern void *__initrd_end;
 int initrd_is_mapped = 0;
 extern int initrd_below_start_ok;
 #endif
@@ -79,10 +77,6 @@ static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE;
 
 sysmem_info_t __initdata sysmem;
 
-#ifdef CONFIG_BLK_DEV_INITRD
-int initrd_is_mapped;
-#endif
-
 #ifdef CONFIG_MMU
 extern void init_mmu(void);
 #else
@@ -197,12 +191,6 @@ static int __init parse_bootparam(const bp_tag_t* tag)
 
 void __init init_arch(bp_tag_t *bp_start)
 {
-
-#ifdef CONFIG_BLK_DEV_INITRD
-        initrd_start = &__initrd_start;
-        initrd_end = &__initrd_end;
-#endif
-
         sysmem.nr_banks = 0;
 
 #ifdef CONFIG_CMDLINE_BOOL
diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S
index ee2e2089483..255154f820b 100644
--- a/arch/xtensa/kernel/vmlinux.lds.S
+++ b/arch/xtensa/kernel/vmlinux.lds.S
@@ -222,11 +222,6 @@ SECTIONS
   . = ALIGN(0x10);
   .bootstrap : { *(.bootstrap.literal .bootstrap.text .bootstrap.data) }
 
-  . = ALIGN(0x1000);
-  __initrd_start = .;
-  .initrd : { *(.initrd) }
-  __initrd_end = .;
-
   .ResetVector.text XCHAL_RESET_VECTOR_VADDR :
   {
     *(.ResetVector.text)
diff --git a/arch/xtensa/kernel/xtensa_ksyms.c b/arch/xtensa/kernel/xtensa_ksyms.c
index c9a7c5b74a0..a8b9f1fd1e1 100644
--- a/arch/xtensa/kernel/xtensa_ksyms.c
+++ b/arch/xtensa/kernel/xtensa_ksyms.c
@@ -39,8 +39,12 @@
 EXPORT_SYMBOL(memset);
 EXPORT_SYMBOL(memcpy);
 EXPORT_SYMBOL(memmove);
+EXPORT_SYMBOL(__strncpy_user);
+EXPORT_SYMBOL(clear_page);
+EXPORT_SYMBOL(copy_page);
 
 EXPORT_SYMBOL(kernel_thread);
+EXPORT_SYMBOL(empty_zero_page);
 
 /*
  * gcc internal math functions
@@ -56,6 +60,7 @@ extern unsigned int __udivsi3(unsigned int, unsigned int);
 extern unsigned int __umodsi3(unsigned int, unsigned int);
 extern unsigned long long __umoddi3(unsigned long long, unsigned long long);
 extern unsigned long long __udivdi3(unsigned long long, unsigned long long);
+extern int __ucmpdi2(int, int);
 
 EXPORT_SYMBOL(__ashldi3);
 EXPORT_SYMBOL(__ashrdi3);
@@ -68,11 +73,31 @@ EXPORT_SYMBOL(__udivsi3);
 EXPORT_SYMBOL(__umodsi3);
 EXPORT_SYMBOL(__udivdi3);
 EXPORT_SYMBOL(__umoddi3);
+EXPORT_SYMBOL(__ucmpdi2);
+
+void __xtensa_libgcc_window_spill(void)
+{
+        BUG();
+}
+EXPORT_SYMBOL(__xtensa_libgcc_window_spill);
+
+unsigned long __sync_fetch_and_and_4(unsigned long *p, unsigned long v)
+{
+        BUG();
+}
+EXPORT_SYMBOL(__sync_fetch_and_and_4);
+
+unsigned long __sync_fetch_and_or_4(unsigned long *p, unsigned long v)
+{
+        BUG();
+}
+EXPORT_SYMBOL(__sync_fetch_and_or_4);
 
 #ifdef CONFIG_NET
 /*
  * Networking support
  */
+EXPORT_SYMBOL(csum_partial);
 EXPORT_SYMBOL(csum_partial_copy_generic);
 #endif /* CONFIG_NET */
 
diff --git a/arch/xtensa/platforms/iss/Makefile b/arch/xtensa/platforms/iss/Makefile
index af96e314d71..b7d1a5c0ff7 100644
--- a/arch/xtensa/platforms/iss/Makefile
+++ b/arch/xtensa/platforms/iss/Makefile
@@ -4,5 +4,5 @@
 # "prom monitor" library routines under Linux.
 #
 
-obj-y                   = io.o console.o setup.o network.o
-
+obj-y                   = console.o setup.o
+obj-$(CONFIG_NET)       += network.o
diff --git a/arch/xtensa/platforms/iss/console.c b/arch/xtensa/platforms/iss/console.c
index 2cd3d3a3400..8ab47edd7c8 100644
--- a/arch/xtensa/platforms/iss/console.c
+++ b/arch/xtensa/platforms/iss/console.c
@@ -33,7 +33,7 @@
 #endif
 
 #define SERIAL_MAX_NUM_LINES 1
-#define SERIAL_TIMER_VALUE (20 * HZ)
+#define SERIAL_TIMER_VALUE (HZ / 10)
 
 static struct tty_driver *serial_driver;
 static struct tty_port serial_port;
@@ -41,19 +41,6 @@ static struct timer_list serial_timer;
 
 static DEFINE_SPINLOCK(timer_lock);
 
-int errno;
-
-static int __simc (int a, int b, int c, int d, int e, int f) __attribute__((__noinline__));
-static int __simc (int a, int b, int c, int d, int e, int f)
-{
-        int ret;
-        __asm__ __volatile__ ("simcall\n"
-                        "mov %0, a2\n"
-                        "mov %1, a3\n" : "=a" (ret), "=a" (errno)
-                        : : "a2", "a3");
-        return ret;
-}
-
 static char *serial_version = "0.1";
 static char *serial_name = "ISS serial driver";
 
diff --git a/arch/xtensa/platforms/iss/include/platform/serial.h b/arch/xtensa/platforms/iss/include/platform/serial.h
new file mode 100644
index 00000000000..e69de29bb2d
--- /dev/null
+++ b/arch/xtensa/platforms/iss/include/platform/serial.h
diff --git a/arch/xtensa/platforms/iss/include/platform/simcall.h b/arch/xtensa/platforms/iss/include/platform/simcall.h
index b7952c06a2b..8c43bfea05e 100644
--- a/arch/xtensa/platforms/iss/include/platform/simcall.h
+++ b/arch/xtensa/platforms/iss/include/platform/simcall.h
@@ -57,6 +57,59 @@
 #define  XTISS_SELECT_ONE_WRITE   2
 #define  XTISS_SELECT_ONE_EXCEPT  3
 
+static int errno;
+
+static inline int __simc(int a, int b, int c, int d, int e, int f)
+{
+        int ret;
+        register int a1 asm("a2") = a;
+        register int b1 asm("a3") = b;
+        register int c1 asm("a4") = c;
+        register int d1 asm("a5") = d;
+        register int e1 asm("a6") = e;
+        register int f1 asm("a7") = f;
+        __asm__ __volatile__ (
+                        "simcall\n"
+                        "mov %0, a2\n"
+                        "mov %1, a3\n"
+                        : "=a" (ret), "=a" (errno), "+r"(a1), "+r"(b1)
+                        : "r"(c1), "r"(d1), "r"(e1), "r"(f1)
+                        : );
+        return ret;
+}
+
+static inline int simc_open(char *file, int flags, int mode)
+{
+        return __simc(SYS_open, (int) file, flags, mode, 0, 0);
+}
+
+static inline int simc_close(int fd)
+{
+        return __simc(SYS_close, fd, 0, 0, 0, 0);
+}
+
+static inline int simc_ioctl(int fd, int request, void *arg)
+{
+        return __simc(SYS_ioctl, fd, request, (int) arg, 0, 0);
+}
+
+static inline int simc_read(int fd, void *buf, size_t count)
+{
+        return __simc(SYS_read, fd, (int) buf, count, 0, 0);
+}
+
+static inline int simc_write(int fd, void *buf, size_t count)
+{
+        return __simc(SYS_write, fd, (int) buf, count, 0, 0);
+}
+
+static inline int simc_poll(int fd)
+{
+        struct timeval tv = { .tv_sec = 0, .tv_usec = 0 };
+
+        return __simc(SYS_select_one, fd, XTISS_SELECT_ONE_READ, (int)&tv,
+                        0, 0);
+}
 
 #endif /* _XTENSA_PLATFORM_ISS_SIMCALL_H */
 
diff --git a/arch/xtensa/platforms/iss/io.c b/arch/xtensa/platforms/iss/io.c
deleted file mode 100644
index 571d0b24f89..00000000000
--- a/arch/xtensa/platforms/iss/io.c
+++ /dev/null
@@ -1,32 +0,0 @@
-/* This file isn't really needed right now. */
-
-#if 0
-
-#include <asm/io.h>
-#include <platform/platform-iss/simcall.h>
-
-extern int __simc ();
-
-
-char iss_serial_getc()
-{
-  char c;
-  __simc( SYS_read, 0, &c, 1 );
-  return c;
-}
-
-void iss_serial_putc( char c )
-{
-  __simc( SYS_write, 1, &c, 1 );
-}
-
-void iss_serial_puts( char *s )
-{
-  if( s != 0 && *s != 0 )
-    __simc( SYS_write, 1, s, strlen(s) );
-}
-
-/*#error Need I/O ports to specific hardware!*/
-
-#endif
-
diff --git a/arch/xtensa/platforms/iss/network.c b/arch/xtensa/platforms/iss/network.c
index 7dde2445642..7d0fea6d7f2 100644
--- a/arch/xtensa/platforms/iss/network.c
+++ b/arch/xtensa/platforms/iss/network.c
@@ -101,55 +101,6 @@ struct iss_net_private {
 
 };
 
-/* ======================= ISS SIMCALL INTERFACE =========================== */
-
-/* Note: __simc must _not_ be declared inline! */
-
-static int errno;
-
-static int __simc (int a, int b, int c, int d, int e, int f) __attribute__((__noinline__));
-static int __simc (int a, int b, int c, int d, int e, int f)
-{
-        int ret;
-        __asm__ __volatile__ ("simcall\n"
-                              "mov %0, a2\n"
-                              "mov %1, a3\n" : "=a" (ret), "=a" (errno)
-                              : : "a2", "a3");
-        return ret;
-}
-
-static int inline simc_open(char *file, int flags, int mode)
-{
-        return __simc(SYS_open, (int) file, flags, mode, 0, 0);
-}
-
-static int inline simc_close(int fd)
-{
-        return __simc(SYS_close, fd, 0, 0, 0, 0);
-}
-
-static int inline simc_ioctl(int fd, int request, void *arg)
-{
-        return __simc(SYS_ioctl, fd, request, (int) arg, 0, 0);
-}
-
-static int inline simc_read(int fd, void *buf, size_t count)
-{
-        return __simc(SYS_read, fd, (int) buf, count, 0, 0);
-}
-
-static int inline simc_write(int fd, void *buf, size_t count)
-{
-        return __simc(SYS_write, fd, (int) buf, count, 0, 0);
-}
-
-static int inline simc_poll(int fd)
-{
-        struct timeval tv = { .tv_sec = 0, .tv_usec = 0 };
-
-        return __simc(SYS_select_one, fd, XTISS_SELECT_ONE_READ, (int)&tv,0,0);
-}
-
 /* ================================ HELPERS ================================ */
 
 
diff --git a/arch/xtensa/platforms/iss/setup.c b/arch/xtensa/platforms/iss/setup.c
index f60c8cf6dfb..927acf378ea 100644
--- a/arch/xtensa/platforms/iss/setup.c
+++ b/arch/xtensa/platforms/iss/setup.c
@@ -38,16 +38,22 @@ void __init platform_init(bp_tag_t* bootparam)
 
 }
 
+#ifdef CONFIG_PCI
+void platform_pcibios_init(void)
+{
+}
+#endif
+
 void platform_halt(void)
 {
-        printk (" ** Called platform_halt(), looping forever! **\n");
-        while (1);
+        pr_info(" ** Called platform_halt() **\n");
+        __asm__ __volatile__("movi a2, 1\nsimcall\n");
 }
 
 void platform_power_off(void)
 {
-        printk (" ** Called platform_power_off(), looping forever! **\n");
-        while (1);
+        pr_info(" ** Called platform_power_off() **\n");
+        __asm__ __volatile__("movi a2, 1\nsimcall\n");
 }
 void platform_restart(void)
 {