xtensa: move headers files to arch/xtensa/include

Move all header files for xtensa to arch/xtensa/include and platform and
variant header files to the appropriate arch/xtensa/platforms/ and
arch/xtensa/variants/ directories.

Moving the files gets also rid of all uses of symlinks in the Makefile.

This has been completed already for the majority of the architectures
and xtensa is one out of six missing.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Chris Zankel <chris@zankel.net>

98 files changed, 8054 insertions, 0 deletions

diff --git a/arch/xtensa/include/asm/Kbuild b/arch/xtensa/include/asm/Kbuild
new file mode 100644
index 000000000000..c68e1680da01
--- /dev/null
+++ b/arch/xtensa/include/asm/Kbuild
@@ -0,0 +1 @@
+include include/asm-generic/Kbuild.asm
diff --git a/arch/xtensa/include/asm/asmmacro.h b/arch/xtensa/include/asm/asmmacro.h
new file mode 100644
index 000000000000..755320f6e0bc
--- /dev/null
+++ b/arch/xtensa/include/asm/asmmacro.h
@@ -0,0 +1,153 @@
+/*
+ * include/asm-xtensa/asmmacro.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_ASMMACRO_H
+#define _XTENSA_ASMMACRO_H
+
+#include <variant/core.h>
+
+/*
+ * Some little helpers for loops. Use zero-overhead-loops
+ * where applicable and if supported by the processor.
+ *
+ * __loopi ar, at, size, inc
+ *         ar   register initialized with the start address
+ *         at   scratch register used by macro
+ *         size size immediate value
+ *         inc  increment
+ *
+ * __loops ar, as, at, inc_log2[, mask_log2][, cond][, ncond]
+ *         ar   register initialized with the start address
+ *         as   register initialized with the size
+ *         at   scratch register use by macro
+ *         inc_log2     increment [in log2]
+ *         mask_log2    mask [in log2]
+ *         cond         true condition (used in loop'cond')
+ *         ncond        false condition (used in b'ncond')
+ *
+ * __loop  as
+ *         restart loop. 'as' register must not have been modified!
+ *
+ * __endla ar, at, incr
+ *         ar   start address (modified)
+ *         as   scratch register used by macro
+ *         inc  increment
+ */
+
+/*
+ * loop for given size as immediate
+ */
+
+        .macro  __loopi ar, at, size, incr
+
+#if XCHAL_HAVE_LOOPS
+                movi    \at, ((\size + \incr - 1) / (\incr))
+                loop    \at, 99f
+#else
+                addi    \at, \ar, \size
+                98:
+#endif
+
+        .endm
+
+/*
+ * loop for given size in register
+ */
+
+        .macro  __loops ar, as, at, incr_log2, mask_log2, cond, ncond
+
+#if XCHAL_HAVE_LOOPS
+                .ifgt \incr_log2 - 1
+                        addi    \at, \as, (1 << \incr_log2) - 1
+                        .ifnc \mask_log2,
+                                extui   \at, \at, \incr_log2, \mask_log2
+                        .else
+                                srli    \at, \at, \incr_log2
+                        .endif
+                .endif
+                loop\cond       \at, 99f
+#else
+                .ifnc \mask_log2,
+                        extui   \at, \as, \incr_log2, \mask_log2
+                .else
+                        .ifnc \ncond,
+                                srli    \at, \as, \incr_log2
+                        .endif
+                .endif
+                .ifnc \ncond,
+                        b\ncond \at, 99f
+
+                .endif
+                .ifnc \mask_log2,
+                        slli    \at, \at, \incr_log2
+                        add     \at, \ar, \at
+                .else
+                        add     \at, \ar, \as
+                .endif
+#endif
+                98:
+
+        .endm
+
+/*
+ * loop from ar to ax
+ */
+
+        .macro  __loopt ar, as, at, incr_log2
+
+#if XCHAL_HAVE_LOOPS
+                sub     \at, \as, \ar
+                .ifgt   \incr_log2 - 1
+                        addi    \at, \at, (1 << \incr_log2) - 1
+                        srli    \at, \at, \incr_log2
+                .endif
+                loop    \at, 99f
+#else
+                98:
+#endif
+
+        .endm
+
+/*
+ * restart loop. registers must be unchanged
+ */
+
+        .macro  __loop  as
+
+#if XCHAL_HAVE_LOOPS
+                loop    \as, 99f
+#else
+                98:
+#endif
+
+        .endm
+
+/*
+ * end of loop with no increment of the address.
+ */
+
+        .macro  __endl  ar, as
+#if !XCHAL_HAVE_LOOPS
+                bltu    \ar, \as, 98b
+#endif
+                99:
+        .endm
+
+/*
+ * end of loop with increment of the address.
+ */
+
+        .macro  __endla ar, as, incr
+                addi    \ar, \ar, \incr
+                __endl  \ar \as
+        .endm
+
+
+#endif /* _XTENSA_ASMMACRO_H */
diff --git a/arch/xtensa/include/asm/atomic.h b/arch/xtensa/include/asm/atomic.h
new file mode 100644
index 000000000000..b3b23540f14d
--- /dev/null
+++ b/arch/xtensa/include/asm/atomic.h
@@ -0,0 +1,300 @@
+/*
+ * include/asm-xtensa/atomic.h
+ *
+ * Atomic operations that C can't guarantee us.  Useful for resource counting..
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_ATOMIC_H
+#define _XTENSA_ATOMIC_H
+
+#include <linux/stringify.h>
+
+typedef struct { volatile int counter; } atomic_t;
+
+#ifdef __KERNEL__
+#include <asm/processor.h>
+#include <asm/system.h>
+
+#define ATOMIC_INIT(i)  { (i) }
+
+/*
+ * This Xtensa implementation assumes that the right mechanism
+ * for exclusion is for locking interrupts to level 1.
+ *
+ * Locking interrupts looks like this:
+ *
+ *    rsil a15, 1
+ *    <code>
+ *    wsr  a15, PS
+ *    rsync
+ *
+ * Note that a15 is used here because the register allocation
+ * done by the compiler is not guaranteed and a window overflow
+ * may not occur between the rsil and wsr instructions. By using
+ * a15 in the rsil, the machine is guaranteed to be in a state
+ * where no register reference will cause an overflow.
+ */
+
+/**
+ * atomic_read - read atomic variable
+ * @v: pointer of type atomic_t
+ *
+ * Atomically reads the value of @v.
+ */
+#define atomic_read(v)          ((v)->counter)
+
+/**
+ * atomic_set - set atomic variable
+ * @v: pointer of type atomic_t
+ * @i: required value
+ *
+ * Atomically sets the value of @v to @i.
+ */
+#define atomic_set(v,i)         ((v)->counter = (i))
+
+/**
+ * atomic_add - add integer to atomic variable
+ * @i: integer value to add
+ * @v: pointer of type atomic_t
+ *
+ * Atomically adds @i to @v.
+ */
+static inline void atomic_add(int i, atomic_t * v)
+{
+    unsigned int vval;
+
+    __asm__ __volatile__(
+        "rsil    a15, "__stringify(LOCKLEVEL)"\n\t"
+        "l32i    %0, %2, 0              \n\t"
+        "add     %0, %0, %1             \n\t"
+        "s32i    %0, %2, 0              \n\t"
+        "wsr     a15, "__stringify(PS)"       \n\t"
+        "rsync                          \n"
+        : "=&a" (vval)
+        : "a" (i), "a" (v)
+        : "a15", "memory"
+        );
+}
+
+/**
+ * atomic_sub - subtract the atomic variable
+ * @i: integer value to subtract
+ * @v: pointer of type atomic_t
+ *
+ * Atomically subtracts @i from @v.
+ */
+static inline void atomic_sub(int i, atomic_t *v)
+{
+    unsigned int vval;
+
+    __asm__ __volatile__(
+        "rsil    a15, "__stringify(LOCKLEVEL)"\n\t"
+        "l32i    %0, %2, 0              \n\t"
+        "sub     %0, %0, %1             \n\t"
+        "s32i    %0, %2, 0              \n\t"
+        "wsr     a15, "__stringify(PS)"       \n\t"
+        "rsync                          \n"
+        : "=&a" (vval)
+        : "a" (i), "a" (v)
+        : "a15", "memory"
+        );
+}
+
+/*
+ * We use atomic_{add|sub}_return to define other functions.
+ */
+
+static inline int atomic_add_return(int i, atomic_t * v)
+{
+     unsigned int vval;
+
+    __asm__ __volatile__(
+        "rsil    a15,"__stringify(LOCKLEVEL)"\n\t"
+        "l32i    %0, %2, 0             \n\t"
+        "add     %0, %0, %1            \n\t"
+        "s32i    %0, %2, 0             \n\t"
+        "wsr     a15, "__stringify(PS)"      \n\t"
+        "rsync                         \n"
+        : "=&a" (vval)
+        : "a" (i), "a" (v)
+        : "a15", "memory"
+        );
+
+    return vval;
+}
+
+static inline int atomic_sub_return(int i, atomic_t * v)
+{
+    unsigned int vval;
+
+    __asm__ __volatile__(
+        "rsil    a15,"__stringify(LOCKLEVEL)"\n\t"
+        "l32i    %0, %2, 0             \n\t"
+        "sub     %0, %0, %1            \n\t"
+        "s32i    %0, %2, 0             \n\t"
+        "wsr     a15, "__stringify(PS)"       \n\t"
+        "rsync                         \n"
+        : "=&a" (vval)
+        : "a" (i), "a" (v)
+        : "a15", "memory"
+        );
+
+    return vval;
+}
+
+/**
+ * atomic_sub_and_test - subtract value from variable and test result
+ * @i: integer value to subtract
+ * @v: pointer of type atomic_t
+ *
+ * Atomically subtracts @i from @v and returns
+ * true if the result is zero, or false for all
+ * other cases.
+ */
+#define atomic_sub_and_test(i,v) (atomic_sub_return((i),(v)) == 0)
+
+/**
+ * atomic_inc - increment atomic variable
+ * @v: pointer of type atomic_t
+ *
+ * Atomically increments @v by 1.
+ */
+#define atomic_inc(v) atomic_add(1,(v))
+
+/**
+ * atomic_inc - increment atomic variable
+ * @v: pointer of type atomic_t
+ *
+ * Atomically increments @v by 1.
+ */
+#define atomic_inc_return(v) atomic_add_return(1,(v))
+
+/**
+ * atomic_dec - decrement atomic variable
+ * @v: pointer of type atomic_t
+ *
+ * Atomically decrements @v by 1.
+ */
+#define atomic_dec(v) atomic_sub(1,(v))
+
+/**
+ * atomic_dec_return - decrement atomic variable
+ * @v: pointer of type atomic_t
+ *
+ * Atomically decrements @v by 1.
+ */
+#define atomic_dec_return(v) atomic_sub_return(1,(v))
+
+/**
+ * atomic_dec_and_test - decrement and test
+ * @v: pointer of type atomic_t
+ *
+ * Atomically decrements @v by 1 and
+ * returns true if the result is 0, or false for all other
+ * cases.
+ */
+#define atomic_dec_and_test(v) (atomic_sub_return(1,(v)) == 0)
+
+/**
+ * atomic_inc_and_test - increment and test
+ * @v: pointer of type atomic_t
+ *
+ * Atomically increments @v by 1
+ * and returns true if the result is zero, or false for all
+ * other cases.
+ */
+#define atomic_inc_and_test(v) (atomic_add_return(1,(v)) == 0)
+
+/**
+ * atomic_add_negative - add and test if negative
+ * @v: pointer of type atomic_t
+ * @i: integer value to add
+ *
+ * Atomically adds @i to @v and returns true
+ * if the result is negative, or false when
+ * result is greater than or equal to zero.
+ */
+#define atomic_add_negative(i,v) (atomic_add_return((i),(v)) < 0)
+
+#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
+/**
+ * atomic_add_unless - add unless the number is a given value
+ * @v: pointer of type atomic_t
+ * @a: the amount to add to v...
+ * @u: ...unless v is equal to u.
+ *
+ * Atomically adds @a to @v, so long as it was not @u.
+ * Returns non-zero if @v was not @u, and zero otherwise.
+ */
+static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+{
+        int c, old;
+        c = atomic_read(v);
+        for (;;) {
+                if (unlikely(c == (u)))
+                        break;
+                old = atomic_cmpxchg((v), c, c + (a));
+                if (likely(old == c))
+                        break;
+                c = old;
+        }
+        return c != (u);
+}
+
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
+static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)
+{
+    unsigned int all_f = -1;
+    unsigned int vval;
+
+    __asm__ __volatile__(
+        "rsil    a15,"__stringify(LOCKLEVEL)"\n\t"
+        "l32i    %0, %2, 0             \n\t"
+        "xor     %1, %4, %3            \n\t"
+        "and     %0, %0, %4            \n\t"
+        "s32i    %0, %2, 0             \n\t"
+        "wsr     a15, "__stringify(PS)"      \n\t"
+        "rsync                         \n"
+        : "=&a" (vval), "=a" (mask)
+        : "a" (v), "a" (all_f), "1" (mask)
+        : "a15", "memory"
+        );
+}
+
+static inline void atomic_set_mask(unsigned int mask, atomic_t *v)
+{
+    unsigned int vval;
+
+    __asm__ __volatile__(
+        "rsil    a15,"__stringify(LOCKLEVEL)"\n\t"
+        "l32i    %0, %2, 0             \n\t"
+        "or      %0, %0, %1            \n\t"
+        "s32i    %0, %2, 0             \n\t"
+        "wsr     a15, "__stringify(PS)"       \n\t"
+        "rsync                         \n"
+        : "=&a" (vval)
+        : "a" (mask), "a" (v)
+        : "a15", "memory"
+        );
+}
+
+/* Atomic operations are already serializing */
+#define smp_mb__before_atomic_dec()     barrier()
+#define smp_mb__after_atomic_dec()      barrier()
+#define smp_mb__before_atomic_inc()     barrier()
+#define smp_mb__after_atomic_inc()      barrier()
+
+#include <asm-generic/atomic.h>
+#endif /* __KERNEL__ */
+
+#endif /* _XTENSA_ATOMIC_H */
+
diff --git a/arch/xtensa/include/asm/auxvec.h b/arch/xtensa/include/asm/auxvec.h
new file mode 100644
index 000000000000..257dec75c5af
--- /dev/null
+++ b/arch/xtensa/include/asm/auxvec.h
@@ -0,0 +1,4 @@
+#ifndef __XTENSA_AUXVEC_H
+#define __XTENSA_AUXVEC_H
+
+#endif
diff --git a/arch/xtensa/include/asm/bitops.h b/arch/xtensa/include/asm/bitops.h
new file mode 100644
index 000000000000..23261e8f2e5a
--- /dev/null
+++ b/arch/xtensa/include/asm/bitops.h
@@ -0,0 +1,121 @@
+/*
+ * include/asm-xtensa/bitops.h
+ *
+ * Atomic operations that C can't guarantee us.Useful for resource counting etc.
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_BITOPS_H
+#define _XTENSA_BITOPS_H
+
+#ifdef __KERNEL__
+
+#ifndef _LINUX_BITOPS_H
+#error only <linux/bitops.h> can be included directly
+#endif
+
+#include <asm/processor.h>
+#include <asm/byteorder.h>
+#include <asm/system.h>
+
+#ifdef CONFIG_SMP
+# error SMP not supported on this architecture
+#endif
+
+#define smp_mb__before_clear_bit()      barrier()
+#define smp_mb__after_clear_bit()       barrier()
+
+#include <asm-generic/bitops/atomic.h>
+#include <asm-generic/bitops/non-atomic.h>
+
+#if XCHAL_HAVE_NSA
+
+static inline unsigned long __cntlz (unsigned long x)
+{
+        int lz;
+        asm ("nsau %0, %1" : "=r" (lz) : "r" (x));
+        return lz;
+}
+
+/*
+ * ffz: Find first zero in word. Undefined if no zero exists.
+ * bit 0 is the LSB of addr; bit 32 is the LSB of (addr+1).
+ */
+
+static inline int ffz(unsigned long x)
+{
+        return 31 - __cntlz(~x & -~x);
+}
+
+/*
+ * __ffs: Find first bit set in word. Return 0 for bit 0
+ */
+
+static inline int __ffs(unsigned long x)
+{
+        return 31 - __cntlz(x & -x);
+}
+
+/*
+ * ffs: Find first bit set in word. This is defined the same way as
+ * the libc and compiler builtin ffs routines, therefore
+ * differs in spirit from the above ffz (man ffs).
+ */
+
+static inline int ffs(unsigned long x)
+{
+        return 32 - __cntlz(x & -x);
+}
+
+/*
+ * fls: Find last (most-significant) bit set in word.
+ * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
+ */
+
+static inline int fls (unsigned int x)
+{
+        return 32 - __cntlz(x);
+}
+
+#else
+
+/* Use the generic implementation if we don't have the nsa/nsau instructions. */
+
+# include <asm-generic/bitops/ffs.h>
+# include <asm-generic/bitops/__ffs.h>
+# include <asm-generic/bitops/ffz.h>
+# include <asm-generic/bitops/fls.h>
+
+#endif
+
+#include <asm-generic/bitops/fls64.h>
+#include <asm-generic/bitops/find.h>
+#include <asm-generic/bitops/ext2-non-atomic.h>
+
+#ifdef __XTENSA_EL__
+# define ext2_set_bit_atomic(lock,nr,addr)                              \
+        test_and_set_bit((nr), (unsigned long*)(addr))
+# define ext2_clear_bit_atomic(lock,nr,addr)                            \
+        test_and_clear_bit((nr), (unsigned long*)(addr))
+#elif defined(__XTENSA_EB__)
+# define ext2_set_bit_atomic(lock,nr,addr)                              \
+        test_and_set_bit((nr) ^ 0x18, (unsigned long*)(addr))
+# define ext2_clear_bit_atomic(lock,nr,addr)                            \
+        test_and_clear_bit((nr) ^ 0x18, (unsigned long*)(addr))
+#else
+# error processor byte order undefined!
+#endif
+
+#include <asm-generic/bitops/hweight.h>
+#include <asm-generic/bitops/lock.h>
+#include <asm-generic/bitops/sched.h>
+#include <asm-generic/bitops/minix.h>
+
+#endif  /* __KERNEL__ */
+
+#endif  /* _XTENSA_BITOPS_H */
diff --git a/arch/xtensa/include/asm/bootparam.h b/arch/xtensa/include/asm/bootparam.h
new file mode 100644
index 000000000000..9983f2c1b7ee
--- /dev/null
+++ b/arch/xtensa/include/asm/bootparam.h
@@ -0,0 +1,61 @@
+/*
+ * include/asm-xtensa/bootparam.h
+ *
+ * Definition of the Linux/Xtensa boot parameter structure
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005  Tensilica Inc.
+ *
+ * (Concept borrowed from the 68K port)
+ */
+
+#ifndef _XTENSA_BOOTPARAM_H
+#define _XTENSA_BOOTPARAM_H
+
+#define BP_VERSION 0x0001
+
+#define BP_TAG_COMMAND_LINE     0x1001  /* command line (0-terminated string)*/
+#define BP_TAG_INITRD           0x1002  /* ramdisk addr and size (bp_meminfo) */
+#define BP_TAG_MEMORY           0x1003  /* memory addr and size (bp_meminfo) */
+#define BP_TAG_SERIAL_BAUSRATE  0x1004  /* baud rate of current console. */
+#define BP_TAG_SERIAL_PORT      0x1005  /* serial device of current console */
+
+#define BP_TAG_FIRST            0x7B0B  /* first tag with a version number */
+#define BP_TAG_LAST             0x7E0B  /* last tag */
+
+#ifndef __ASSEMBLY__
+
+/* All records are aligned to 4 bytes */
+
+typedef struct bp_tag {
+  unsigned short id;            /* tag id */
+  unsigned short size;          /* size of this record excluding the structure*/
+  unsigned long data[0];        /* data */
+} bp_tag_t;
+
+typedef struct meminfo {
+  unsigned long type;
+  unsigned long start;
+  unsigned long end;
+} meminfo_t;
+
+#define SYSMEM_BANKS_MAX 5
+
+#define MEMORY_TYPE_CONVENTIONAL        0x1000
+#define MEMORY_TYPE_NONE                0x2000
+
+typedef struct sysmem_info {
+  int nr_banks;
+  meminfo_t bank[SYSMEM_BANKS_MAX];
+} sysmem_info_t;
+
+extern sysmem_info_t sysmem;
+
+#endif
+#endif
+
+
+
diff --git a/arch/xtensa/include/asm/bug.h b/arch/xtensa/include/asm/bug.h
new file mode 100644
index 000000000000..3e52d72712f1
--- /dev/null
+++ b/arch/xtensa/include/asm/bug.h
@@ -0,0 +1,18 @@
+/*
+ * include/asm-xtensa/bug.h
+ *
+ * Macros to cause a 'bug' message.
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_BUG_H
+#define _XTENSA_BUG_H
+
+#include <asm-generic/bug.h>
+
+#endif  /* _XTENSA_BUG_H */
diff --git a/arch/xtensa/include/asm/bugs.h b/arch/xtensa/include/asm/bugs.h
new file mode 100644
index 000000000000..69b29d198249
--- /dev/null
+++ b/arch/xtensa/include/asm/bugs.h
@@ -0,0 +1,18 @@
+/*
+ * include/asm-xtensa/bugs.h
+ *
+ * This is included by init/main.c to check for architecture-dependent bugs.
+ *
+ * Xtensa processors don't have any bugs.  :)
+ *
+ * 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.
+ */
+
+#ifndef _XTENSA_BUGS_H
+#define _XTENSA_BUGS_H
+
+static void check_bugs(void) { }
+
+#endif /* _XTENSA_BUGS_H */
diff --git a/arch/xtensa/include/asm/byteorder.h b/arch/xtensa/include/asm/byteorder.h
new file mode 100644
index 000000000000..07d10ad364d1
--- /dev/null
+++ b/arch/xtensa/include/asm/byteorder.h
@@ -0,0 +1,80 @@
+/*
+ * include/asm-xtensa/byteorder.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_BYTEORDER_H
+#define _XTENSA_BYTEORDER_H
+
+#include <asm/types.h>
+#include <linux/compiler.h>
+
+#ifdef __XTENSA_EL__
+# define __LITTLE_ENDIAN
+#elif defined(__XTENSA_EB__)
+# define __BIG_ENDIAN
+#else
+# error processor byte order undefined!
+#endif
+
+#define __SWAB_64_THRU_32__
+
+static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
+{
+    __u32 res;
+    /* instruction sequence from Xtensa ISA release 2/2000 */
+    __asm__("ssai     8           \n\t"
+            "srli     %0, %1, 16  \n\t"
+            "src      %0, %0, %1  \n\t"
+            "src      %0, %0, %0  \n\t"
+            "src      %0, %1, %0  \n"
+            : "=&a" (res)
+            : "a" (x)
+            );
+    return res;
+}
+#define __arch_swab32 __arch_swab32
+
+static inline __attribute_const__ __u16 __arch_swab16(__u16 x)
+{
+    /* Given that 'short' values are signed (i.e., can be negative),
+     * we cannot assume that the upper 16-bits of the register are
+     * zero.  We are careful to mask values after shifting.
+     */
+
+    /* There exists an anomaly between xt-gcc and xt-xcc.  xt-gcc
+     * inserts an extui instruction after putting this function inline
+     * to ensure that it uses only the least-significant 16 bits of
+     * the result.  xt-xcc doesn't use an extui, but assumes the
+     * __asm__ macro follows convention that the upper 16 bits of an
+     * 'unsigned short' result are still zero.  This macro doesn't
+     * follow convention; indeed, it leaves garbage in the upport 16
+     * bits of the register.
+
+     * Declaring the temporary variables 'res' and 'tmp' to be 32-bit
+     * types while the return type of the function is a 16-bit type
+     * forces both compilers to insert exactly one extui instruction
+     * (or equivalent) to mask off the upper 16 bits. */
+
+    __u32 res;
+    __u32 tmp;
+
+    __asm__("extui    %1, %2, 8, 8\n\t"
+            "slli     %0, %2, 8   \n\t"
+            "or       %0, %0, %1  \n"
+            : "=&a" (res), "=&a" (tmp)
+            : "a" (x)
+            );
+
+    return res;
+}
+#define __arch_swab16 __arch_swab16
+
+#include <linux/byteorder.h>
+
+#endif /* _XTENSA_BYTEORDER_H */
diff --git a/arch/xtensa/include/asm/cache.h b/arch/xtensa/include/asm/cache.h
new file mode 100644
index 000000000000..f04c9891142f
--- /dev/null
+++ b/arch/xtensa/include/asm/cache.h
@@ -0,0 +1,33 @@
+/*
+ * include/asm-xtensa/cache.h
+ *
+ * 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.
+ *
+ * (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CACHE_H
+#define _XTENSA_CACHE_H
+
+#include <variant/core.h>
+
+#define L1_CACHE_SHIFT  XCHAL_DCACHE_LINEWIDTH
+#define L1_CACHE_BYTES  XCHAL_DCACHE_LINESIZE
+#define SMP_CACHE_BYTES L1_CACHE_BYTES
+
+#define DCACHE_WAY_SIZE (XCHAL_DCACHE_SIZE/XCHAL_DCACHE_WAYS)
+#define ICACHE_WAY_SIZE (XCHAL_ICACHE_SIZE/XCHAL_ICACHE_WAYS)
+#define DCACHE_WAY_SHIFT (XCHAL_DCACHE_SETWIDTH + XCHAL_DCACHE_LINEWIDTH)
+#define ICACHE_WAY_SHIFT (XCHAL_ICACHE_SETWIDTH + XCHAL_ICACHE_LINEWIDTH)
+
+/* Maximum cache size per way. */
+#if DCACHE_WAY_SIZE >= ICACHE_WAY_SIZE
+# define CACHE_WAY_SIZE DCACHE_WAY_SIZE
+#else
+# define CACHE_WAY_SIZE ICACHE_WAY_SIZE
+#endif
+
+
+#endif  /* _XTENSA_CACHE_H */
diff --git a/arch/xtensa/include/asm/cacheasm.h b/arch/xtensa/include/asm/cacheasm.h
new file mode 100644
index 000000000000..2c20a58f94cd
--- /dev/null
+++ b/arch/xtensa/include/asm/cacheasm.h
@@ -0,0 +1,177 @@
+/*
+ * include/asm-xtensa/cacheasm.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2006 Tensilica Inc.
+ */
+
+#include <asm/cache.h>
+#include <asm/asmmacro.h>
+#include <linux/stringify.h>
+
+/*
+ * Define cache functions as macros here so that they can be used
+ * by the kernel and boot loader. We should consider moving them to a
+ * library that can be linked by both.
+ *
+ * Locking
+ *
+ *   ___unlock_dcache_all
+ *   ___unlock_icache_all
+ *
+ * Flush and invaldating
+ *
+ *   ___flush_invalidate_dcache_{all|range|page}
+ *   ___flush_dcache_{all|range|page}
+ *   ___invalidate_dcache_{all|range|page}
+ *   ___invalidate_icache_{all|range|page}
+ *
+ */
+
+        .macro  __loop_cache_all ar at insn size line_width
+
+        movi    \ar, 0
+
+        __loopi \ar, \at, \size, (4 << (\line_width))
+        \insn   \ar, 0 << (\line_width)
+        \insn   \ar, 1 << (\line_width)
+        \insn   \ar, 2 << (\line_width)
+        \insn   \ar, 3 << (\line_width)
+        __endla \ar, \at, 4 << (\line_width)
+
+        .endm
+
+
+        .macro  __loop_cache_range ar as at insn line_width
+
+        extui   \at, \ar, 0, \line_width
+        add     \as, \as, \at
+
+        __loops \ar, \as, \at, \line_width
+        \insn   \ar, 0
+        __endla \ar, \at, (1 << (\line_width))
+
+        .endm
+
+
+        .macro  __loop_cache_page ar at insn line_width
+
+        __loopi \ar, \at, PAGE_SIZE, 4 << (\line_width)
+        \insn   \ar, 0 << (\line_width)
+        \insn   \ar, 1 << (\line_width)
+        \insn   \ar, 2 << (\line_width)
+        \insn   \ar, 3 << (\line_width)
+        __endla \ar, \at, 4 << (\line_width)
+
+        .endm
+
+
+#if XCHAL_DCACHE_LINE_LOCKABLE
+
+        .macro  ___unlock_dcache_all ar at
+
+        __loop_cache_all \ar \at diu XCHAL_DCACHE_SIZE XCHAL_DCACHE_LINEWIDTH
+
+        .endm
+
+#endif
+
+#if XCHAL_ICACHE_LINE_LOCKABLE
+
+        .macro  ___unlock_icache_all ar at
+
+        __loop_cache_all \ar \at iiu XCHAL_ICACHE_SIZE XCHAL_ICACHE_LINEWIDTH
+
+        .endm
+#endif
+
+        .macro  ___flush_invalidate_dcache_all ar at
+
+        __loop_cache_all \ar \at diwbi XCHAL_DCACHE_SIZE XCHAL_DCACHE_LINEWIDTH
+
+        .endm
+
+
+        .macro  ___flush_dcache_all ar at
+
+        __loop_cache_all \ar \at diwb XCHAL_DCACHE_SIZE XCHAL_DCACHE_LINEWIDTH
+
+        .endm
+
+
+        .macro  ___invalidate_dcache_all ar at
+
+        __loop_cache_all \ar \at dii __stringify(DCACHE_WAY_SIZE) \
+                         XCHAL_DCACHE_LINEWIDTH
+
+        .endm
+
+
+        .macro  ___invalidate_icache_all ar at
+
+        __loop_cache_all \ar \at iii __stringify(ICACHE_WAY_SIZE) \
+                         XCHAL_ICACHE_LINEWIDTH
+
+        .endm
+
+
+
+        .macro  ___flush_invalidate_dcache_range ar as at
+
+        __loop_cache_range \ar \as \at dhwbi XCHAL_DCACHE_LINEWIDTH
+
+        .endm
+
+
+        .macro  ___flush_dcache_range ar as at
+
+        __loop_cache_range \ar \as \at dhwb XCHAL_DCACHE_LINEWIDTH
+
+        .endm
+
+
+        .macro  ___invalidate_dcache_range ar as at
+
+        __loop_cache_range \ar \as \at dhi XCHAL_DCACHE_LINEWIDTH
+
+        .endm
+
+
+        .macro  ___invalidate_icache_range ar as at
+
+        __loop_cache_range \ar \as \at ihi XCHAL_ICACHE_LINEWIDTH
+
+        .endm
+
+
+
+        .macro  ___flush_invalidate_dcache_page ar as
+
+        __loop_cache_page \ar \as dhwbi XCHAL_DCACHE_LINEWIDTH
+
+        .endm
+
+
+        .macro ___flush_dcache_page ar as
+
+        __loop_cache_page \ar \as dhwb XCHAL_DCACHE_LINEWIDTH
+
+        .endm
+
+
+        .macro  ___invalidate_dcache_page ar as
+
+        __loop_cache_page \ar \as dhi XCHAL_DCACHE_LINEWIDTH
+
+        .endm
+
+
+        .macro  ___invalidate_icache_page ar as
+
+        __loop_cache_page \ar \as ihi XCHAL_ICACHE_LINEWIDTH
+
+        .endm
+
diff --git a/arch/xtensa/include/asm/cacheflush.h b/arch/xtensa/include/asm/cacheflush.h
new file mode 100644
index 000000000000..94c4c53a099e
--- /dev/null
+++ b/arch/xtensa/include/asm/cacheflush.h
@@ -0,0 +1,155 @@
+/*
+ * include/asm-xtensa/cacheflush.h
+ *
+ * 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.
+ *
+ * (C) 2001 - 2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CACHEFLUSH_H
+#define _XTENSA_CACHEFLUSH_H
+
+#ifdef __KERNEL__
+
+#include <linux/mm.h>
+#include <asm/processor.h>
+#include <asm/page.h>
+
+/*
+ * Lo-level routines for cache flushing.
+ *
+ * invalidate data or instruction cache:
+ *
+ * __invalidate_icache_all()
+ * __invalidate_icache_page(adr)
+ * __invalidate_dcache_page(adr)
+ * __invalidate_icache_range(from,size)
+ * __invalidate_dcache_range(from,size)
+ *
+ * flush data cache:
+ *
+ * __flush_dcache_page(adr)
+ *
+ * flush and invalidate data cache:
+ *
+ * __flush_invalidate_dcache_all()
+ * __flush_invalidate_dcache_page(adr)
+ * __flush_invalidate_dcache_range(from,size)
+ *
+ * specials for cache aliasing:
+ *
+ * __flush_invalidate_dcache_page_alias(vaddr,paddr)
+ * __invalidate_icache_page_alias(vaddr,paddr)
+ */
+
+extern void __invalidate_dcache_all(void);
+extern void __invalidate_icache_all(void);
+extern void __invalidate_dcache_page(unsigned long);
+extern void __invalidate_icache_page(unsigned long);
+extern void __invalidate_icache_range(unsigned long, unsigned long);
+extern void __invalidate_dcache_range(unsigned long, unsigned long);
+
+
+#if XCHAL_DCACHE_IS_WRITEBACK
+extern void __flush_invalidate_dcache_all(void);
+extern void __flush_dcache_page(unsigned long);
+extern void __flush_dcache_range(unsigned long, unsigned long);
+extern void __flush_invalidate_dcache_page(unsigned long);
+extern void __flush_invalidate_dcache_range(unsigned long, unsigned long);
+#else
+# define __flush_dcache_range(p,s)              do { } while(0)
+# define __flush_dcache_page(p)                 do { } while(0)
+# define __flush_invalidate_dcache_page(p)      __invalidate_dcache_page(p)
+# define __flush_invalidate_dcache_range(p,s)   __invalidate_dcache_range(p,s)
+#endif
+
+#if (DCACHE_WAY_SIZE > PAGE_SIZE)
+extern void __flush_invalidate_dcache_page_alias(unsigned long, unsigned long);
+#endif
+#if (ICACHE_WAY_SIZE > PAGE_SIZE)
+extern void __invalidate_icache_page_alias(unsigned long, unsigned long);
+#else
+# define __invalidate_icache_page_alias(v,p)    do { } while(0)
+#endif
+
+/*
+ * We have physically tagged caches - nothing to do here -
+ * unless we have cache aliasing.
+ *
+ * Pages can get remapped. Because this might change the 'color' of that page,
+ * we have to flush the cache before the PTE is changed.
+ * (see also Documentation/cachetlb.txt)
+ */
+
+#if (DCACHE_WAY_SIZE > PAGE_SIZE)
+
+#define flush_cache_all()                                               \
+        do {                                                            \
+                __flush_invalidate_dcache_all();                        \
+                __invalidate_icache_all();                              \
+        } while (0)
+
+#define flush_cache_mm(mm)              flush_cache_all()
+#define flush_cache_dup_mm(mm)          flush_cache_mm(mm)
+
+#define flush_cache_vmap(start,end)     flush_cache_all()
+#define flush_cache_vunmap(start,end)   flush_cache_all()
+
+extern void flush_dcache_page(struct page*);
+extern void flush_cache_range(struct vm_area_struct*, ulong, ulong);
+extern void flush_cache_page(struct vm_area_struct*, unsigned long, unsigned long);
+
+#else
+
+#define flush_cache_all()                               do { } while (0)
+#define flush_cache_mm(mm)                              do { } while (0)
+#define flush_cache_dup_mm(mm)                          do { } while (0)
+
+#define flush_cache_vmap(start,end)                     do { } while (0)
+#define flush_cache_vunmap(start,end)                   do { } while (0)
+
+#define flush_dcache_page(page)                         do { } while (0)
+
+#define flush_cache_page(vma,addr,pfn)                  do { } while (0)
+#define flush_cache_range(vma,start,end)                do { } while (0)
+
+#endif
+
+/* Ensure consistency between data and instruction cache. */
+#define flush_icache_range(start,end)                                   \
+        do {                                                            \
+                __flush_dcache_range(start, (end) - (start));           \
+                __invalidate_icache_range(start,(end) - (start));       \
+        } while (0)
+
+/* This is not required, see Documentation/cachetlb.txt */
+#define flush_icache_page(vma,page)                     do { } while (0)
+
+#define flush_dcache_mmap_lock(mapping)                 do { } while (0)
+#define flush_dcache_mmap_unlock(mapping)               do { } while (0)
+
+#if (DCACHE_WAY_SIZE > PAGE_SIZE)
+
+extern void copy_to_user_page(struct vm_area_struct*, struct page*,
+                unsigned long, void*, const void*, unsigned long);
+extern void copy_from_user_page(struct vm_area_struct*, struct page*,
+                unsigned long, void*, const void*, unsigned long);
+
+#else
+
+#define copy_to_user_page(vma, page, vaddr, dst, src, len)              \
+        do {                                                            \
+                memcpy(dst, src, len);                                  \
+                __flush_dcache_range((unsigned long) dst, len);         \
+                __invalidate_icache_range((unsigned long) dst, len);    \
+        } while (0)
+
+#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
+        memcpy(dst, src, len)
+
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* _XTENSA_CACHEFLUSH_H */
diff --git a/arch/xtensa/include/asm/checksum.h b/arch/xtensa/include/asm/checksum.h
new file mode 100644
index 000000000000..f84d3f00774a
--- /dev/null
+++ b/arch/xtensa/include/asm/checksum.h
@@ -0,0 +1,250 @@
+/*
+ * include/asm-xtensa/checksum.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CHECKSUM_H
+#define _XTENSA_CHECKSUM_H
+
+#include <linux/in6.h>
+#include <variant/core.h>
+
+/*
+ * computes the checksum of a memory block at buff, length len,
+ * and adds in "sum" (32-bit)
+ *
+ * returns a 32-bit number suitable for feeding into itself
+ * or csum_tcpudp_magic
+ *
+ * this function must be called with even lengths, except
+ * for the last fragment, which may be odd
+ *
+ * it's best to have buff aligned on a 32-bit boundary
+ */
+asmlinkage __wsum csum_partial(const void *buff, int len, __wsum sum);
+
+/*
+ * the same as csum_partial, but copies from src while it
+ * checksums, and handles user-space pointer exceptions correctly, when needed.
+ *
+ * here even more important to align src and dst on a 32-bit (or even
+ * better 64-bit) boundary
+ */
+
+asmlinkage __wsum csum_partial_copy_generic(const void *src, void *dst, int len, __wsum sum,
+                                                   int *src_err_ptr, int *dst_err_ptr);
+
+/*
+ *      Note: when you get a NULL pointer exception here this means someone
+ *      passed in an incorrect kernel address to one of these functions.
+ *
+ *      If you use these functions directly please don't forget the access_ok().
+ */
+static inline
+__wsum csum_partial_copy_nocheck(const void *src, void *dst,
+                                        int len, __wsum sum)
+{
+        return csum_partial_copy_generic(src, dst, len, sum, NULL, NULL);
+}
+
+static inline
+__wsum csum_partial_copy_from_user(const void __user *src, void *dst,
+                                                int len, __wsum sum, int *err_ptr)
+{
+        return csum_partial_copy_generic((__force const void *)src, dst,
+                                        len, sum, err_ptr, NULL);
+}
+
+/*
+ *      Fold a partial checksum
+ */
+
+static __inline__ __sum16 csum_fold(__wsum sum)
+{
+        unsigned int __dummy;
+        __asm__("extui  %1, %0, 16, 16\n\t"
+                "extui  %0 ,%0, 0, 16\n\t"
+                "add    %0, %0, %1\n\t"
+                "slli   %1, %0, 16\n\t"
+                "add    %0, %0, %1\n\t"
+                "extui  %0, %0, 16, 16\n\t"
+                "neg    %0, %0\n\t"
+                "addi   %0, %0, -1\n\t"
+                "extui  %0, %0, 0, 16\n\t"
+                : "=r" (sum), "=&r" (__dummy)
+                : "0" (sum));
+        return (__force __sum16)sum;
+}
+
+/*
+ *      This is a version of ip_compute_csum() optimized for IP headers,
+ *      which always checksum on 4 octet boundaries.
+ */
+static __inline__ __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
+{
+        unsigned int sum, tmp, endaddr;
+
+        __asm__ __volatile__(
+                "sub            %0, %0, %0\n\t"
+#if XCHAL_HAVE_LOOPS
+                "loopgtz        %2, 2f\n\t"
+#else
+                "beqz           %2, 2f\n\t"
+                "slli           %4, %2, 2\n\t"
+                "add            %4, %4, %1\n\t"
+                "0:\t"
+#endif
+                "l32i           %3, %1, 0\n\t"
+                "add            %0, %0, %3\n\t"
+                "bgeu           %0, %3, 1f\n\t"
+                "addi           %0, %0, 1\n\t"
+                "1:\t"
+                "addi           %1, %1, 4\n\t"
+#if !XCHAL_HAVE_LOOPS
+                "blt            %1, %4, 0b\n\t"
+#endif
+                "2:\t"
+        /* Since the input registers which are loaded with iph and ihl
+           are modified, we must also specify them as outputs, or gcc
+           will assume they contain their original values. */
+                : "=r" (sum), "=r" (iph), "=r" (ihl), "=&r" (tmp), "=&r" (endaddr)
+                : "1" (iph), "2" (ihl));
+
+        return  csum_fold(sum);
+}
+
+static __inline__ __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
+                                                   unsigned short len,
+                                                   unsigned short proto,
+                                                   __wsum sum)
+{
+
+#ifdef __XTENSA_EL__
+        unsigned long len_proto = (len + proto) << 8;
+#elif defined(__XTENSA_EB__)
+        unsigned long len_proto = len + proto;
+#else
+# error processor byte order undefined!
+#endif
+        __asm__("add    %0, %0, %1\n\t"
+                "bgeu   %0, %1, 1f\n\t"
+                "addi   %0, %0, 1\n\t"
+                "1:\t"
+                "add    %0, %0, %2\n\t"
+                "bgeu   %0, %2, 1f\n\t"
+                "addi   %0, %0, 1\n\t"
+                "1:\t"
+                "add    %0, %0, %3\n\t"
+                "bgeu   %0, %3, 1f\n\t"
+                "addi   %0, %0, 1\n\t"
+                "1:\t"
+                : "=r" (sum), "=r" (len_proto)
+                : "r" (daddr), "r" (saddr), "1" (len_proto), "0" (sum));
+        return sum;
+}
+
+/*
+ * computes the checksum of the TCP/UDP pseudo-header
+ * returns a 16-bit checksum, already complemented
+ */
+static __inline__ __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr,
+                                                       unsigned short len,
+                                                       unsigned short proto,
+                                                       __wsum sum)
+{
+        return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum));
+}
+
+/*
+ * this routine is used for miscellaneous IP-like checksums, mainly
+ * in icmp.c
+ */
+
+static __inline__ __sum16 ip_compute_csum(const void *buff, int len)
+{
+    return csum_fold (csum_partial(buff, len, 0));
+}
+
+#define _HAVE_ARCH_IPV6_CSUM
+static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
+                                          const struct in6_addr *daddr,
+                                          __u32 len, unsigned short proto,
+                                          __wsum sum)
+{
+        unsigned int __dummy;
+        __asm__("l32i   %1, %2, 0\n\t"
+                "add    %0, %0, %1\n\t"
+                "bgeu   %0, %1, 1f\n\t"
+                "addi   %0, %0, 1\n\t"
+                "1:\t"
+                "l32i   %1, %2, 4\n\t"
+                "add    %0, %0, %1\n\t"
+                "bgeu   %0, %1, 1f\n\t"
+                "addi   %0, %0, 1\n\t"
+                "1:\t"
+                "l32i   %1, %2, 8\n\t"
+                "add    %0, %0, %1\n\t"
+                "bgeu   %0, %1, 1f\n\t"
+                "addi   %0, %0, 1\n\t"
+                "1:\t"
+                "l32i   %1, %2, 12\n\t"
+                "add    %0, %0, %1\n\t"
+                "bgeu   %0, %1, 1f\n\t"
+                "addi   %0, %0, 1\n\t"
+                "1:\t"
+                "l32i   %1, %3, 0\n\t"
+                "add    %0, %0, %1\n\t"
+                "bgeu   %0, %1, 1f\n\t"
+                "addi   %0, %0, 1\n\t"
+                "1:\t"
+                "l32i   %1, %3, 4\n\t"
+                "add    %0, %0, %1\n\t"
+                "bgeu   %0, %1, 1f\n\t"
+                "addi   %0, %0, 1\n\t"
+                "1:\t"
+                "l32i   %1, %3, 8\n\t"
+                "add    %0, %0, %1\n\t"
+                "bgeu   %0, %1, 1f\n\t"
+                "addi   %0, %0, 1\n\t"
+                "1:\t"
+                "l32i   %1, %3, 12\n\t"
+                "add    %0, %0, %1\n\t"
+                "bgeu   %0, %1, 1f\n\t"
+                "addi   %0, %0, 1\n\t"
+                "1:\t"
+                "add    %0, %0, %4\n\t"
+                "bgeu   %0, %4, 1f\n\t"
+                "addi   %0, %0, 1\n\t"
+                "1:\t"
+                "add    %0, %0, %5\n\t"
+                "bgeu   %0, %5, 1f\n\t"
+                "addi   %0, %0, 1\n\t"
+                "1:\t"
+                : "=r" (sum), "=&r" (__dummy)
+                : "r" (saddr), "r" (daddr),
+                  "r" (htonl(len)), "r" (htonl(proto)), "0" (sum));
+
+        return csum_fold(sum);
+}
+
+/*
+ *      Copy and checksum to user
+ */
+#define HAVE_CSUM_COPY_USER
+static __inline__ __wsum csum_and_copy_to_user(const void *src, void __user *dst,
+                                    int len, __wsum sum, int *err_ptr)
+{
+        if (access_ok(VERIFY_WRITE, dst, len))
+                return csum_partial_copy_generic(src, dst, len, sum, NULL, err_ptr);
+
+        if (len)
+                *err_ptr = -EFAULT;
+
+        return (__force __wsum)-1; /* invalid checksum */
+}
+#endif
diff --git a/arch/xtensa/include/asm/coprocessor.h b/arch/xtensa/include/asm/coprocessor.h
new file mode 100644
index 000000000000..65a285d8d3fb
--- /dev/null
+++ b/arch/xtensa/include/asm/coprocessor.h
@@ -0,0 +1,177 @@
+/*
+ * include/asm-xtensa/coprocessor.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2003 - 2007 Tensilica Inc.
+ */
+
+
+#ifndef _XTENSA_COPROCESSOR_H
+#define _XTENSA_COPROCESSOR_H
+
+#include <linux/stringify.h>
+#include <variant/tie.h>
+#include <asm/types.h>
+
+#ifdef __ASSEMBLY__
+# include <variant/tie-asm.h>
+
+.macro  xchal_sa_start  a b
+        .set .Lxchal_pofs_, 0
+        .set .Lxchal_ofs_, 0
+.endm
+
+.macro  xchal_sa_align  ptr minofs maxofs ofsalign totalign
+        .set    .Lxchal_ofs_, .Lxchal_ofs_ + .Lxchal_pofs_ + \totalign - 1
+        .set    .Lxchal_ofs_, (.Lxchal_ofs_ & -\totalign) - .Lxchal_pofs_
+.endm
+
+#define _SELECT (  XTHAL_SAS_TIE | XTHAL_SAS_OPT \
+                 | XTHAL_SAS_CC \
+                 | XTHAL_SAS_CALR | XTHAL_SAS_CALE )
+
+.macro save_xtregs_opt ptr clb at1 at2 at3 at4 offset
+        .if XTREGS_OPT_SIZE > 0
+                addi    \clb, \ptr, \offset
+                xchal_ncp_store \clb \at1 \at2 \at3 \at4 select=_SELECT
+        .endif
+.endm
+
+.macro load_xtregs_opt ptr clb at1 at2 at3 at4 offset
+        .if XTREGS_OPT_SIZE > 0
+                addi    \clb, \ptr, \offset
+                xchal_ncp_load \clb \at1 \at2 \at3 \at4 select=_SELECT
+        .endif
+.endm
+#undef _SELECT
+
+#define _SELECT (  XTHAL_SAS_TIE | XTHAL_SAS_OPT \
+                 | XTHAL_SAS_NOCC \
+                 | XTHAL_SAS_CALR | XTHAL_SAS_CALE | XTHAL_SAS_GLOB )
+
+.macro save_xtregs_user ptr clb at1 at2 at3 at4 offset
+        .if XTREGS_USER_SIZE > 0
+                addi    \clb, \ptr, \offset
+                xchal_ncp_store \clb \at1 \at2 \at3 \at4 select=_SELECT
+        .endif
+.endm
+
+.macro load_xtregs_user ptr clb at1 at2 at3 at4 offset
+        .if XTREGS_USER_SIZE > 0
+                addi    \clb, \ptr, \offset
+                xchal_ncp_load \clb \at1 \at2 \at3 \at4 select=_SELECT
+        .endif
+.endm
+#undef _SELECT
+
+
+
+#endif  /* __ASSEMBLY__ */
+
+/*
+ * XTENSA_HAVE_COPROCESSOR(x) returns 1 if coprocessor x is configured.
+ *
+ * XTENSA_HAVE_IO_PORT(x) returns 1 if io-port x is configured.
+ *
+ */
+
+#define XTENSA_HAVE_COPROCESSOR(x)                                      \
+        ((XCHAL_CP_MASK ^ XCHAL_CP_PORT_MASK) & (1 << (x)))
+#define XTENSA_HAVE_COPROCESSORS                                        \
+        (XCHAL_CP_MASK ^ XCHAL_CP_PORT_MASK)
+#define XTENSA_HAVE_IO_PORT(x)                                          \
+        (XCHAL_CP_PORT_MASK & (1 << (x)))
+#define XTENSA_HAVE_IO_PORTS                                            \
+        XCHAL_CP_PORT_MASK
+
+#ifndef __ASSEMBLY__
+
+
+#if XCHAL_HAVE_CP
+
+#define RSR_CPENABLE(x) do {                                              \
+        __asm__ __volatile__("rsr %0," __stringify(CPENABLE) : "=a" (x)); \
+        } while(0);
+#define WSR_CPENABLE(x) do {                                              \
+        __asm__ __volatile__("wsr %0," __stringify(CPENABLE) "; rsync"    \
+                             :: "a" (x));                                 \
+        } while(0);
+
+#endif /* XCHAL_HAVE_CP */
+
+
+/*
+ * Additional registers.
+ * We define three types of additional registers:
+ *  ext: extra registers that are used by the compiler
+ *  cpn: optional registers that can be used by a user application
+ *  cpX: coprocessor registers that can only be used if the corresponding
+ *       CPENABLE bit is set.
+ */
+
+#define XCHAL_SA_REG(list,cc,abi,type,y,name,z,align,size,...)  \
+        __REG ## list (cc, abi, type, name, size, align)
+
+#define __REG0(cc,abi,t,name,s,a)       __REG0_ ## cc (abi,name)
+#define __REG1(cc,abi,t,name,s,a)       __REG1_ ## cc (name)
+#define __REG2(cc,abi,type,...)         __REG2_ ## type (__VA_ARGS__)
+
+#define __REG0_0(abi,name)
+#define __REG0_1(abi,name)              __REG0_1 ## abi (name)
+#define __REG0_10(name) __u32 name;
+#define __REG0_11(name) __u32 name;
+#define __REG0_12(name)
+
+#define __REG1_0(name)  __u32 name;
+#define __REG1_1(name)
+
+#define __REG2_0(n,s,a) __u32 name;
+#define __REG2_1(n,s,a) unsigned char n[s] __attribute__ ((aligned(a)));
+#define __REG2_2(n,s,a) unsigned char n[s] __attribute__ ((aligned(a)));
+
+typedef struct { XCHAL_NCP_SA_LIST(0) } xtregs_opt_t
+        __attribute__ ((aligned (XCHAL_NCP_SA_ALIGN)));
+typedef struct { XCHAL_NCP_SA_LIST(1) } xtregs_user_t
+        __attribute__ ((aligned (XCHAL_NCP_SA_ALIGN)));
+
+#if XTENSA_HAVE_COPROCESSORS
+
+typedef struct { XCHAL_CP0_SA_LIST(2) } xtregs_cp0_t
+        __attribute__ ((aligned (XCHAL_CP0_SA_ALIGN)));
+typedef struct { XCHAL_CP1_SA_LIST(2) } xtregs_cp1_t
+        __attribute__ ((aligned (XCHAL_CP1_SA_ALIGN)));
+typedef struct { XCHAL_CP2_SA_LIST(2) } xtregs_cp2_t
+        __attribute__ ((aligned (XCHAL_CP2_SA_ALIGN)));
+typedef struct { XCHAL_CP3_SA_LIST(2) } xtregs_cp3_t
+        __attribute__ ((aligned (XCHAL_CP3_SA_ALIGN)));
+typedef struct { XCHAL_CP4_SA_LIST(2) } xtregs_cp4_t
+        __attribute__ ((aligned (XCHAL_CP4_SA_ALIGN)));
+typedef struct { XCHAL_CP5_SA_LIST(2) } xtregs_cp5_t
+        __attribute__ ((aligned (XCHAL_CP5_SA_ALIGN)));
+typedef struct { XCHAL_CP6_SA_LIST(2) } xtregs_cp6_t
+        __attribute__ ((aligned (XCHAL_CP6_SA_ALIGN)));
+typedef struct { XCHAL_CP7_SA_LIST(2) } xtregs_cp7_t
+        __attribute__ ((aligned (XCHAL_CP7_SA_ALIGN)));
+
+extern struct thread_info* coprocessor_owner[XCHAL_CP_MAX];
+extern void coprocessor_save(void*, int);
+extern void coprocessor_load(void*, int);
+extern void coprocessor_flush(struct thread_info*, int);
+extern void coprocessor_restore(struct thread_info*, int);
+
+extern void coprocessor_release_all(struct thread_info*);
+extern void coprocessor_flush_all(struct thread_info*);
+
+static inline void coprocessor_clear_cpenable(void)
+{
+        unsigned long i = 0;
+        WSR_CPENABLE(i);
+}
+
+#endif  /* XTENSA_HAVE_COPROCESSORS */
+
+#endif  /* !__ASSEMBLY__ */
+#endif  /* _XTENSA_COPROCESSOR_H */
diff --git a/arch/xtensa/include/asm/cpumask.h b/arch/xtensa/include/asm/cpumask.h
new file mode 100644
index 000000000000..ebeede397db3
--- /dev/null
+++ b/arch/xtensa/include/asm/cpumask.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/cpumask.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CPUMASK_H
+#define _XTENSA_CPUMASK_H
+
+#include <asm-generic/cpumask.h>
+
+#endif /* _XTENSA_CPUMASK_H */
diff --git a/arch/xtensa/include/asm/cputime.h b/arch/xtensa/include/asm/cputime.h
new file mode 100644
index 000000000000..a7fb864a50ae
--- /dev/null
+++ b/arch/xtensa/include/asm/cputime.h
@@ -0,0 +1,6 @@
+#ifndef _XTENSA_CPUTIME_H
+#define _XTENSA_CPUTIME_H
+
+#include <asm-generic/cputime.h>
+
+#endif /* _XTENSA_CPUTIME_H */
diff --git a/arch/xtensa/include/asm/current.h b/arch/xtensa/include/asm/current.h
new file mode 100644
index 000000000000..8d1eb5d78649
--- /dev/null
+++ b/arch/xtensa/include/asm/current.h
@@ -0,0 +1,38 @@
+/*
+ * include/asm-xtensa/current.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CURRENT_H
+#define _XTENSA_CURRENT_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/thread_info.h>
+
+struct task_struct;
+
+static inline struct task_struct *get_current(void)
+{
+        return current_thread_info()->task;
+}
+
+#define current get_current()
+
+#else
+
+#define CURRENT_SHIFT 13
+
+#define GET_CURRENT(reg,sp)             \
+        GET_THREAD_INFO(reg,sp);        \
+        l32i reg, reg, TI_TASK          \
+
+#endif
+
+
+#endif /* XTENSA_CURRENT_H */
diff --git a/arch/xtensa/include/asm/delay.h b/arch/xtensa/include/asm/delay.h
new file mode 100644
index 000000000000..e1d8c9e010c1
--- /dev/null
+++ b/arch/xtensa/include/asm/delay.h
@@ -0,0 +1,49 @@
+/*
+ * include/asm-xtensa/delay.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ *
+ */
+
+#ifndef _XTENSA_DELAY_H
+#define _XTENSA_DELAY_H
+
+#include <asm/processor.h>
+#include <asm/param.h>
+
+extern unsigned long loops_per_jiffy;
+
+static inline void __delay(unsigned long loops)
+{
+  /* 2 cycles per loop. */
+  __asm__ __volatile__ ("1: addi %0, %0, -2; bgeui %0, 2, 1b"
+                        : "=r" (loops) : "0" (loops));
+}
+
+static __inline__ u32 xtensa_get_ccount(void)
+{
+        u32 ccount;
+        asm volatile ("rsr %0, 234; # CCOUNT\n" : "=r" (ccount));
+        return ccount;
+}
+
+/* For SMP/NUMA systems, change boot_cpu_data to something like
+ * local_cpu_data->... where local_cpu_data points to the current
+ * cpu. */
+
+static __inline__ void udelay (unsigned long usecs)
+{
+        unsigned long start = xtensa_get_ccount();
+        unsigned long cycles = usecs * (loops_per_jiffy / (1000000UL / HZ));
+
+        /* Note: all variables are unsigned (can wrap around)! */
+        while (((unsigned long)xtensa_get_ccount()) - start < cycles)
+                ;
+}
+
+#endif
+
diff --git a/arch/xtensa/include/asm/device.h b/arch/xtensa/include/asm/device.h
new file mode 100644
index 000000000000..d8f9872b0e2d
--- /dev/null
+++ b/arch/xtensa/include/asm/device.h
@@ -0,0 +1,7 @@
+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+
diff --git a/arch/xtensa/include/asm/div64.h b/arch/xtensa/include/asm/div64.h
new file mode 100644
index 000000000000..f35678cb0a9b
--- /dev/null
+++ b/arch/xtensa/include/asm/div64.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/div64.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_DIV64_H
+#define _XTENSA_DIV64_H
+
+#include <asm-generic/div64.h>
+
+#endif /* _XTENSA_DIV64_H */
diff --git a/arch/xtensa/include/asm/dma-mapping.h b/arch/xtensa/include/asm/dma-mapping.h
new file mode 100644
index 000000000000..51882ae3db4d
--- /dev/null
+++ b/arch/xtensa/include/asm/dma-mapping.h
@@ -0,0 +1,179 @@
+/*
+ * include/asm-xtensa/dma-mapping.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2003 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_DMA_MAPPING_H
+#define _XTENSA_DMA_MAPPING_H
+
+#include <asm/cache.h>
+#include <asm/io.h>
+#include <linux/mm.h>
+#include <linux/scatterlist.h>
+
+/*
+ * DMA-consistent mapping functions.
+ */
+
+extern void *consistent_alloc(int, size_t, dma_addr_t, unsigned long);
+extern void consistent_free(void*, size_t, dma_addr_t);
+extern void consistent_sync(void*, size_t, int);
+
+#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
+#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
+
+void *dma_alloc_coherent(struct device *dev, size_t size,
+                           dma_addr_t *dma_handle, gfp_t flag);
+
+void dma_free_coherent(struct device *dev, size_t size,
+                         void *vaddr, dma_addr_t dma_handle);
+
+static inline dma_addr_t
+dma_map_single(struct device *dev, void *ptr, size_t size,
+               enum dma_data_direction direction)
+{
+        BUG_ON(direction == DMA_NONE);
+        consistent_sync(ptr, size, direction);
+        return virt_to_phys(ptr);
+}
+
+static inline void
+dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
+                 enum dma_data_direction direction)
+{
+        BUG_ON(direction == DMA_NONE);
+}
+
+static inline int
+dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
+           enum dma_data_direction direction)
+{
+        int i;
+
+        BUG_ON(direction == DMA_NONE);
+
+        for (i = 0; i < nents; i++, sg++ ) {
+                BUG_ON(!sg_page(sg));
+
+                sg->dma_address = sg_phys(sg);
+                consistent_sync(sg_virt(sg), sg->length, direction);
+        }
+
+        return nents;
+}
+
+static inline dma_addr_t
+dma_map_page(struct device *dev, struct page *page, unsigned long offset,
+             size_t size, enum dma_data_direction direction)
+{
+        BUG_ON(direction == DMA_NONE);
+        return (dma_addr_t)(page_to_pfn(page)) * PAGE_SIZE + offset;
+}
+
+static inline void
+dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
+               enum dma_data_direction direction)
+{
+        BUG_ON(direction == DMA_NONE);
+}
+
+
+static inline void
+dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
+             enum dma_data_direction direction)
+{
+        BUG_ON(direction == DMA_NONE);
+}
+
+static inline void
+dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
+                enum dma_data_direction direction)
+{
+        consistent_sync((void *)bus_to_virt(dma_handle), size, direction);
+}
+
+static inline void
+dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size,
+                enum dma_data_direction direction)
+{
+        consistent_sync((void *)bus_to_virt(dma_handle), size, direction);
+}
+
+static inline void
+dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
+                      unsigned long offset, size_t size,
+                      enum dma_data_direction direction)
+{
+
+        consistent_sync((void *)bus_to_virt(dma_handle)+offset,size,direction);
+}
+
+static inline void
+dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
+                      unsigned long offset, size_t size,
+                      enum dma_data_direction direction)
+{
+
+        consistent_sync((void *)bus_to_virt(dma_handle)+offset,size,direction);
+}
+static inline void
+dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
+                 enum dma_data_direction dir)
+{
+        int i;
+        for (i = 0; i < nelems; i++, sg++)
+                consistent_sync(sg_virt(sg), sg->length, dir);
+}
+
+static inline void
+dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
+                 enum dma_data_direction dir)
+{
+        int i;
+        for (i = 0; i < nelems; i++, sg++)
+                consistent_sync(sg_virt(sg), sg->length, dir);
+}
+static inline int
+dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
+{
+        return 0;
+}
+
+static inline int
+dma_supported(struct device *dev, u64 mask)
+{
+        return 1;
+}
+
+static inline int
+dma_set_mask(struct device *dev, u64 mask)
+{
+        if(!dev->dma_mask || !dma_supported(dev, mask))
+                return -EIO;
+
+        *dev->dma_mask = mask;
+
+        return 0;
+}
+
+static inline int
+dma_get_cache_alignment(void)
+{
+        return L1_CACHE_BYTES;
+}
+
+#define dma_is_consistent(d, h) (1)
+
+static inline void
+dma_cache_sync(struct device *dev, void *vaddr, size_t size,
+               enum dma_data_direction direction)
+{
+        consistent_sync(vaddr, size, direction);
+}
+
+#endif  /* _XTENSA_DMA_MAPPING_H */
diff --git a/arch/xtensa/include/asm/dma.h b/arch/xtensa/include/asm/dma.h
new file mode 100644
index 000000000000..e30f3abf48f0
--- /dev/null
+++ b/arch/xtensa/include/asm/dma.h
@@ -0,0 +1,61 @@
+/*
+ * include/asm-xtensa/dma.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2003 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_DMA_H
+#define _XTENSA_DMA_H
+
+#include <asm/io.h>             /* need byte IO */
+
+/*
+ * This is only to be defined if we have PC-like DMA.
+ * By default this is not true on an Xtensa processor,
+ * however on boards with a PCI bus, such functionality
+ * might be emulated externally.
+ *
+ * NOTE:  there still exists driver code that assumes
+ * this is defined, eg. drivers/sound/soundcard.c (as of 2.4).
+ */
+#define MAX_DMA_CHANNELS        8
+
+/*
+ * The maximum virtual address to which DMA transfers
+ * can be performed on this platform.
+ *
+ * NOTE: This is board (platform) specific, not processor-specific!
+ *
+ * NOTE: This assumes DMA transfers can only be performed on
+ *      the section of physical memory contiguously mapped in virtual
+ *      space for the kernel.  For the Xtensa architecture, this
+ *      means the maximum possible size of this DMA area is
+ *      the size of the statically mapped kernel segment
+ *      (XCHAL_KSEG_{CACHED,BYPASS}_SIZE), ie. 128 MB.
+ *
+ * NOTE: When the entire KSEG area is DMA capable, we substract
+ *      one from the max address so that the virt_to_phys() macro
+ *      works correctly on the address (otherwise the address
+ *      enters another area, and virt_to_phys() may not return
+ *      the value desired).
+ */
+
+#define MAX_DMA_ADDRESS         (PAGE_OFFSET + XCHAL_KIO_SIZE - 1)
+
+
+/* Reserve and release a DMA channel */
+extern int request_dma(unsigned int dmanr, const char * device_id);
+extern void free_dma(unsigned int dmanr);
+
+#ifdef CONFIG_PCI
+extern int isa_dma_bridge_buggy;
+#else
+#define isa_dma_bridge_buggy    (0)
+#endif
+
+
+#endif
diff --git a/arch/xtensa/include/asm/elf.h b/arch/xtensa/include/asm/elf.h
new file mode 100644
index 000000000000..c3f53e755ca5
--- /dev/null
+++ b/arch/xtensa/include/asm/elf.h
@@ -0,0 +1,205 @@
+/*
+ * include/asm-xtensa/elf.h
+ *
+ * ELF register definitions
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_ELF_H
+#define _XTENSA_ELF_H
+
+#include <asm/ptrace.h>
+
+/* Xtensa processor ELF architecture-magic number */
+
+#define EM_XTENSA       94
+#define EM_XTENSA_OLD   0xABC7
+
+/* Xtensa relocations defined by the ABIs */
+
+#define R_XTENSA_NONE           0
+#define R_XTENSA_32             1
+#define R_XTENSA_RTLD           2
+#define R_XTENSA_GLOB_DAT       3
+#define R_XTENSA_JMP_SLOT       4
+#define R_XTENSA_RELATIVE       5
+#define R_XTENSA_PLT            6
+#define R_XTENSA_OP0            8
+#define R_XTENSA_OP1            9
+#define R_XTENSA_OP2            10
+#define R_XTENSA_ASM_EXPAND     11
+#define R_XTENSA_ASM_SIMPLIFY   12
+#define R_XTENSA_GNU_VTINHERIT  15
+#define R_XTENSA_GNU_VTENTRY    16
+#define R_XTENSA_DIFF8          17
+#define R_XTENSA_DIFF16         18
+#define R_XTENSA_DIFF32         19
+#define R_XTENSA_SLOT0_OP       20
+#define R_XTENSA_SLOT1_OP       21
+#define R_XTENSA_SLOT2_OP       22
+#define R_XTENSA_SLOT3_OP       23
+#define R_XTENSA_SLOT4_OP       24
+#define R_XTENSA_SLOT5_OP       25
+#define R_XTENSA_SLOT6_OP       26
+#define R_XTENSA_SLOT7_OP       27
+#define R_XTENSA_SLOT8_OP       28
+#define R_XTENSA_SLOT9_OP       29
+#define R_XTENSA_SLOT10_OP      30
+#define R_XTENSA_SLOT11_OP      31
+#define R_XTENSA_SLOT12_OP      32
+#define R_XTENSA_SLOT13_OP      33
+#define R_XTENSA_SLOT14_OP      34
+#define R_XTENSA_SLOT0_ALT      35
+#define R_XTENSA_SLOT1_ALT      36
+#define R_XTENSA_SLOT2_ALT      37
+#define R_XTENSA_SLOT3_ALT      38
+#define R_XTENSA_SLOT4_ALT      39
+#define R_XTENSA_SLOT5_ALT      40
+#define R_XTENSA_SLOT6_ALT      41
+#define R_XTENSA_SLOT7_ALT      42
+#define R_XTENSA_SLOT8_ALT      43
+#define R_XTENSA_SLOT9_ALT      44
+#define R_XTENSA_SLOT10_ALT     45
+#define R_XTENSA_SLOT11_ALT     46
+#define R_XTENSA_SLOT12_ALT     47
+#define R_XTENSA_SLOT13_ALT     48
+#define R_XTENSA_SLOT14_ALT     49
+
+/* ELF register definitions. This is needed for core dump support.  */
+
+typedef unsigned long elf_greg_t;
+
+typedef struct {
+        elf_greg_t pc;
+        elf_greg_t ps;
+        elf_greg_t lbeg;
+        elf_greg_t lend;
+        elf_greg_t lcount;
+        elf_greg_t sar;
+        elf_greg_t windowstart;
+        elf_greg_t windowbase;
+        elf_greg_t reserved[8+48];
+        elf_greg_t a[64];
+} xtensa_gregset_t;
+
+#define ELF_NGREG       (sizeof(xtensa_gregset_t) / sizeof(elf_greg_t))
+
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+#define ELF_NFPREG      18
+
+typedef unsigned int elf_fpreg_t;
+typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
+
+#define ELF_CORE_COPY_REGS(_eregs, _pregs)                              \
+        xtensa_elf_core_copy_regs ((xtensa_gregset_t*)&(_eregs), _pregs);
+
+extern void xtensa_elf_core_copy_regs (xtensa_gregset_t *, struct pt_regs *);
+
+/*
+ * This is used to ensure we don't load something for the wrong architecture.
+ */
+
+#define elf_check_arch(x) ( ( (x)->e_machine == EM_XTENSA )  || \
+                            ( (x)->e_machine == EM_XTENSA_OLD ) )
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+
+#ifdef __XTENSA_EL__
+# define ELF_DATA       ELFDATA2LSB
+#elif defined(__XTENSA_EB__)
+# define ELF_DATA       ELFDATA2MSB
+#else
+# error processor byte order undefined!
+#endif
+
+#define ELF_CLASS       ELFCLASS32
+#define ELF_ARCH        EM_XTENSA
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE       PAGE_SIZE
+
+/*
+ * This is the location that an ET_DYN program is loaded if exec'ed.  Typical
+ * use of this is to invoke "./ld.so someprog" to test out a new version of
+ * the loader.  We need to make sure that it is out of the way of the program
+ * that it will "exec", and that there is sufficient room for the brk.
+ */
+
+#define ELF_ET_DYN_BASE         (2 * TASK_SIZE / 3)
+
+/*
+ * This yields a mask that user programs can use to figure out what
+ * instruction set this CPU supports.  This could be done in user space,
+ * but it's not easy, and we've already done it here.
+ */
+
+#define ELF_HWCAP       (0)
+
+/*
+ * This yields a string that ld.so will use to load implementation
+ * specific libraries for optimization.  This is more specific in
+ * intent than poking at uname or /proc/cpuinfo.
+ * For the moment, we have only optimizations for the Intel generations,
+ * but that could change...
+ */
+
+#define ELF_PLATFORM  (NULL)
+
+/*
+ * The Xtensa processor ABI says that when the program starts, a2
+ * contains a pointer to a function which might be registered using
+ * `atexit'.  This provides a mean for the dynamic linker to call
+ * DT_FINI functions for shared libraries that have been loaded before
+ * the code runs.
+ *
+ * A value of 0 tells we have no such handler.
+ *
+ * We might as well make sure everything else is cleared too (except
+ * for the stack pointer in a1), just to make things more
+ * deterministic.  Also, clearing a0 terminates debugger backtraces.
+ */
+
+#define ELF_PLAT_INIT(_r, load_addr) \
+  do { _r->areg[0]=0; /*_r->areg[1]=0;*/ _r->areg[2]=0;  _r->areg[3]=0;  \
+       _r->areg[4]=0;  _r->areg[5]=0;    _r->areg[6]=0;  _r->areg[7]=0;  \
+       _r->areg[8]=0;  _r->areg[9]=0;    _r->areg[10]=0; _r->areg[11]=0; \
+       _r->areg[12]=0; _r->areg[13]=0;   _r->areg[14]=0; _r->areg[15]=0; \
+  } while (0)
+
+typedef struct {
+        xtregs_opt_t    opt;
+        xtregs_user_t   user;
+#if XTENSA_HAVE_COPROCESSORS
+        xtregs_cp0_t    cp0;
+        xtregs_cp1_t    cp1;
+        xtregs_cp2_t    cp2;
+        xtregs_cp3_t    cp3;
+        xtregs_cp4_t    cp4;
+        xtregs_cp5_t    cp5;
+        xtregs_cp6_t    cp6;
+        xtregs_cp7_t    cp7;
+#endif
+} elf_xtregs_t;
+
+#define SET_PERSONALITY(ex) set_personality(PER_LINUX_32BIT)
+
+struct task_struct;
+
+extern void do_copy_regs (xtensa_gregset_t*, struct pt_regs*,
+                          struct task_struct*);
+extern void do_restore_regs (xtensa_gregset_t*, struct pt_regs*,
+                             struct task_struct*);
+extern void do_save_fpregs (elf_fpregset_t*, struct pt_regs*,
+                            struct task_struct*);
+extern int do_restore_fpregs (elf_fpregset_t*, struct pt_regs*,
+                              struct task_struct*);
+
+#endif  /* _XTENSA_ELF_H */
diff --git a/arch/xtensa/include/asm/emergency-restart.h b/arch/xtensa/include/asm/emergency-restart.h
new file mode 100644
index 000000000000..108d8c48e42e
--- /dev/null
+++ b/arch/xtensa/include/asm/emergency-restart.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_EMERGENCY_RESTART_H
+#define _ASM_EMERGENCY_RESTART_H
+
+#include <asm-generic/emergency-restart.h>
+
+#endif /* _ASM_EMERGENCY_RESTART_H */
diff --git a/arch/xtensa/include/asm/errno.h b/arch/xtensa/include/asm/errno.h
new file mode 100644
index 000000000000..a0f3b96b79b4
--- /dev/null
+++ b/arch/xtensa/include/asm/errno.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/errno.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2002 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_ERRNO_H
+#define _XTENSA_ERRNO_H
+
+#include <asm-generic/errno.h>
+
+#endif  /* _XTENSA_ERRNO_H */
diff --git a/arch/xtensa/include/asm/fb.h b/arch/xtensa/include/asm/fb.h
new file mode 100644
index 000000000000..c7df38030992
--- /dev/null
+++ b/arch/xtensa/include/asm/fb.h
@@ -0,0 +1,12 @@
+#ifndef _ASM_FB_H_
+#define _ASM_FB_H_
+#include <linux/fb.h>
+
+#define fb_pgprotect(...) do {} while (0)
+
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+        return 0;
+}
+
+#endif /* _ASM_FB_H_ */
diff --git a/arch/xtensa/include/asm/fcntl.h b/arch/xtensa/include/asm/fcntl.h
new file mode 100644
index 000000000000..46ab12db5739
--- /dev/null
+++ b/arch/xtensa/include/asm/fcntl.h
@@ -0,0 +1 @@
+#include <asm-generic/fcntl.h>
diff --git a/arch/xtensa/include/asm/futex.h b/arch/xtensa/include/asm/futex.h
new file mode 100644
index 000000000000..0b745828f42b
--- /dev/null
+++ b/arch/xtensa/include/asm/futex.h
@@ -0,0 +1 @@
+#include <asm-generic/futex.h>
diff --git a/arch/xtensa/include/asm/hardirq.h b/arch/xtensa/include/asm/hardirq.h
new file mode 100644
index 000000000000..87cb19d1b10c
--- /dev/null
+++ b/arch/xtensa/include/asm/hardirq.h
@@ -0,0 +1,28 @@
+/*
+ * include/asm-xtensa/hardirq.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2002 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_HARDIRQ_H
+#define _XTENSA_HARDIRQ_H
+
+#include <linux/cache.h>
+#include <asm/irq.h>
+
+/* headers.S is sensitive to the offsets of these fields */
+typedef struct {
+        unsigned int __softirq_pending;
+        unsigned int __syscall_count;
+        struct task_struct * __ksoftirqd_task; /* waitqueue is too large */
+        unsigned int __nmi_count;              /* arch dependent */
+} ____cacheline_aligned irq_cpustat_t;
+
+void ack_bad_irq(unsigned int irq);
+#include <linux/irq_cpustat.h>  /* Standard mappings for irq_cpustat_t above */
+
+#endif  /* _XTENSA_HARDIRQ_H */
diff --git a/arch/xtensa/include/asm/highmem.h b/arch/xtensa/include/asm/highmem.h
new file mode 100644
index 000000000000..0a046ca5a687
--- /dev/null
+++ b/arch/xtensa/include/asm/highmem.h
@@ -0,0 +1,17 @@
+/*
+ * include/asm-xtensa/highmem.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2003 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_HIGHMEM_H
+#define _XTENSA_HIGHMEM_H
+
+extern void flush_cache_kmaps(void);
+
+#endif
+
diff --git a/arch/xtensa/include/asm/hw_irq.h b/arch/xtensa/include/asm/hw_irq.h
new file mode 100644
index 000000000000..3ddbea759b2b
--- /dev/null
+++ b/arch/xtensa/include/asm/hw_irq.h
@@ -0,0 +1,14 @@
+/*
+ * include/asm-xtensa/hw_irq.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2002 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_HW_IRQ_H
+#define _XTENSA_HW_IRQ_H
+
+#endif
diff --git a/arch/xtensa/include/asm/io.h b/arch/xtensa/include/asm/io.h
new file mode 100644
index 000000000000..07b7299dab20
--- /dev/null
+++ b/arch/xtensa/include/asm/io.h
@@ -0,0 +1,200 @@
+/*
+ * include/asm-xtensa/io.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_IO_H
+#define _XTENSA_IO_H
+
+#ifdef __KERNEL__
+#include <asm/byteorder.h>
+#include <asm/page.h>
+#include <linux/kernel.h>
+
+#include <linux/types.h>
+
+#define XCHAL_KIO_CACHED_VADDR  0xe0000000
+#define XCHAL_KIO_BYPASS_VADDR  0xf0000000
+#define XCHAL_KIO_PADDR         0xf0000000
+#define XCHAL_KIO_SIZE          0x10000000
+
+#define IOADDR(x)               (XCHAL_KIO_BYPASS_VADDR + (x))
+
+/*
+ * 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.
+ * Note that we currently don't support any address outside the KIO segment.
+ */
+
+static inline void *ioremap(unsigned long offset, unsigned long size)
+{
+        if (offset >= XCHAL_KIO_PADDR
+            && offset < XCHAL_KIO_PADDR + XCHAL_KIO_SIZE)
+                return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_BYPASS_VADDR);
+
+        else
+                BUG();
+}
+
+static inline void *ioremap_nocache(unsigned long offset, unsigned long size)
+{
+        if (offset >= XCHAL_KIO_PADDR
+            && offset < XCHAL_KIO_PADDR + XCHAL_KIO_SIZE)
+                return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_CACHED_VADDR);
+        else
+                BUG();
+}
+
+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))
+
+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)
+{
+          return *(__force volatile __u32 *)(addr);
+}
+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)
+{
+          *(__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)
+
+/*
+ * Convert a virtual cached pointer to an uncached pointer
+ */
+#define xlate_dev_kmem_ptr(p)   p
+
+
+#endif  /* __KERNEL__ */
+
+#endif  /* _XTENSA_IO_H */
diff --git a/arch/xtensa/include/asm/ioctl.h b/arch/xtensa/include/asm/ioctl.h
new file mode 100644
index 000000000000..b279fe06dfe5
--- /dev/null
+++ b/arch/xtensa/include/asm/ioctl.h
@@ -0,0 +1 @@
+#include <asm-generic/ioctl.h>
diff --git a/arch/xtensa/include/asm/ioctls.h b/arch/xtensa/include/asm/ioctls.h
new file mode 100644
index 000000000000..0ffa942954b9
--- /dev/null
+++ b/arch/xtensa/include/asm/ioctls.h
@@ -0,0 +1,116 @@
+/*
+ * include/asm-xtensa/ioctls.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2003 - 2005 Tensilica Inc.
+ *
+ * Derived from "include/asm-i386/ioctls.h"
+ */
+
+#ifndef _XTENSA_IOCTLS_H
+#define _XTENSA_IOCTLS_H
+
+#include <asm/ioctl.h>
+
+#define FIOCLEX         _IO('f', 1)
+#define FIONCLEX        _IO('f', 2)
+#define FIOASYNC        _IOW('f', 125, int)
+#define FIONBIO         _IOW('f', 126, int)
+#define FIONREAD        _IOR('f', 127, int)
+#define TIOCINQ         FIONREAD
+#define FIOQSIZE        _IOR('f', 128, loff_t)
+
+#define TCGETS          0x5401
+#define TCSETS          0x5402
+#define TCSETSW         0x5403
+#define TCSETSF         0x5404
+
+#define TCGETA          _IOR('t', 23, struct termio)
+#define TCSETA          _IOW('t', 24, struct termio)
+#define TCSETAW         _IOW('t', 25, struct termio)
+#define TCSETAF         _IOW('t', 28, struct termio)
+
+#define TCSBRK          _IO('t', 29)
+#define TCXONC          _IO('t', 30)
+#define TCFLSH          _IO('t', 31)
+
+#define TIOCSWINSZ      _IOW('t', 103, struct winsize)
+#define TIOCGWINSZ      _IOR('t', 104, struct winsize)
+#define TIOCSTART       _IO('t', 110)           /* start output, like ^Q */
+#define TIOCSTOP        _IO('t', 111)           /* stop output, like ^S */
+#define TIOCOUTQ        _IOR('t', 115, int)     /* output queue size */
+
+#define TIOCSPGRP       _IOW('t', 118, int)
+#define TIOCGPGRP       _IOR('t', 119, int)
+
+#define TIOCEXCL        _IO('T', 12)
+#define TIOCNXCL        _IO('T', 13)
+#define TIOCSCTTY       _IO('T', 14)
+
+#define TIOCSTI         _IOW('T', 18, char)
+#define TIOCMGET        _IOR('T', 21, unsigned int)
+#define TIOCMBIS        _IOW('T', 22, unsigned int)
+#define TIOCMBIC        _IOW('T', 23, unsigned int)
+#define TIOCMSET        _IOW('T', 24, unsigned int)
+# define TIOCM_LE       0x001
+# define TIOCM_DTR      0x002
+# define TIOCM_RTS      0x004
+# define TIOCM_ST       0x008
+# define TIOCM_SR       0x010
+# define TIOCM_CTS      0x020
+# define TIOCM_CAR      0x040
+# define TIOCM_RNG      0x080
+# define TIOCM_DSR      0x100
+# define TIOCM_CD       TIOCM_CAR
+# define TIOCM_RI       TIOCM_RNG
+
+#define TIOCGSOFTCAR    _IOR('T', 25, unsigned int)
+#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 TIOCPKT         _IOW('T', 32, int)
+# define TIOCPKT_DATA            0
+# define TIOCPKT_FLUSHREAD       1
+# define TIOCPKT_FLUSHWRITE      2
+# define TIOCPKT_STOP            4
+# define TIOCPKT_START           8
+# define TIOCPKT_NOSTOP         16
+# define TIOCPKT_DOSTOP         32
+
+
+#define TIOCNOTTY       _IO('T', 34)
+#define TIOCSETD        _IOW('T', 35, int)
+#define TIOCGETD        _IOR('T', 36, int)
+#define TCSBRKP         _IOW('T', 37, int)   /* Needed for POSIX tcsendbreak()*/
+#define TIOCTTYGSTRUCT  _IOR('T', 38, struct tty_struct) /* For debugging only*/
+#define TIOCSBRK        _IO('T', 39)         /* BSD compatibility */
+#define TIOCCBRK        _IO('T', 40)         /* BSD compatibility */
+#define TIOCGSID        _IOR('T', 41, pid_t) /* Return the session ID of FD*/
+#define TCGETS2         _IOR('T', 42, struct termios2)
+#define TCSETS2         _IOW('T', 43, struct termios2)
+#define TCSETSW2        _IOW('T', 44, struct termios2)
+#define TCSETSF2        _IOW('T', 45, struct termios2)
+#define TIOCGPTN        _IOR('T',0x30, unsigned int) /* Get Pty Number (of pty-mux device) */
+#define TIOCSPTLCK      _IOW('T',0x31, int)  /* Lock/unlock Pty */
+
+#define TIOCSERCONFIG   _IO('T', 83)
+#define TIOCSERGWILD    _IOR('T', 84,  int)
+#define TIOCSERSWILD    _IOW('T', 85,  int)
+#define TIOCGLCKTRMIOS  0x5456
+#define TIOCSLCKTRMIOS  0x5457
+#define TIOCSERGSTRUCT  0x5458               /* For debugging only */
+#define TIOCSERGETLSR   _IOR('T', 89, unsigned int) /* Get line status reg. */
+  /* ioctl (fd, TIOCSERGETLSR, &result) where result may be as below */
+# define TIOCSER_TEMT    0x01                /* Transmitter physically empty */
+#define TIOCSERGETMULTI _IOR('T', 90, struct serial_multiport_struct) /* Get multiport config  */
+#define TIOCSERSETMULTI _IOW('T', 91, struct serial_multiport_struct) /* Set multiport config */
+
+#define TIOCMIWAIT      _IO('T', 92) /* wait for a change on serial input line(s) */
+#define TIOCGICOUNT     0x545D  /* read serial port inline interrupt counts */
+
+#endif /* _XTENSA_IOCTLS_H */
diff --git a/arch/xtensa/include/asm/ipcbuf.h b/arch/xtensa/include/asm/ipcbuf.h
new file mode 100644
index 000000000000..c33aa6a42145
--- /dev/null
+++ b/arch/xtensa/include/asm/ipcbuf.h
@@ -0,0 +1,37 @@
+/*
+ * include/asm-xtensa/ipcbuf.h
+ *
+ * The ipc64_perm structure for the Xtensa architecture.
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_IPCBUF_H
+#define _XTENSA_IPCBUF_H
+
+/*
+ * Pad space is left for:
+ * - 32-bit mode_t and seq
+ * - 2 miscellaneous 32-bit values
+ *
+ * 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.
+ */
+
+struct ipc64_perm
+{
+        __kernel_key_t          key;
+        __kernel_uid32_t        uid;
+        __kernel_gid32_t        gid;
+        __kernel_uid32_t        cuid;
+        __kernel_gid32_t        cgid;
+        __kernel_mode_t         mode;
+        unsigned long           seq;
+        unsigned long           __unused1;
+        unsigned long           __unused2;
+};
+
+#endif /* _XTENSA_IPCBUF_H */
diff --git a/arch/xtensa/include/asm/irq.h b/arch/xtensa/include/asm/irq.h
new file mode 100644
index 000000000000..1620d1e0e695
--- /dev/null
+++ b/arch/xtensa/include/asm/irq.h
@@ -0,0 +1,30 @@
+/*
+ * include/asm-xtensa/irq.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_IRQ_H
+#define _XTENSA_IRQ_H
+
+#include <platform/hardware.h>
+#include <variant/core.h>
+
+#ifndef PLATFORM_NR_IRQS
+# define PLATFORM_NR_IRQS 0
+#endif
+#define XTENSA_NR_IRQS XCHAL_NUM_INTERRUPTS
+#define NR_IRQS (XTENSA_NR_IRQS + PLATFORM_NR_IRQS)
+
+static __inline__ int irq_canonicalize(int irq)
+{
+        return (irq);
+}
+
+struct irqaction;
+
+#endif  /* _XTENSA_IRQ_H */
diff --git a/arch/xtensa/include/asm/irq_regs.h b/arch/xtensa/include/asm/irq_regs.h
new file mode 100644
index 000000000000..3dd9c0b70270
--- /dev/null
+++ b/arch/xtensa/include/asm/irq_regs.h
@@ -0,0 +1 @@
+#include <asm-generic/irq_regs.h>
diff --git a/arch/xtensa/include/asm/kdebug.h b/arch/xtensa/include/asm/kdebug.h
new file mode 100644
index 000000000000..6ece1b037665
--- /dev/null
+++ b/arch/xtensa/include/asm/kdebug.h
@@ -0,0 +1 @@
+#include <asm-generic/kdebug.h>
diff --git a/arch/xtensa/include/asm/kmap_types.h b/arch/xtensa/include/asm/kmap_types.h
new file mode 100644
index 000000000000..9e822d2e3bce
--- /dev/null
+++ b/arch/xtensa/include/asm/kmap_types.h
@@ -0,0 +1,31 @@
+/*
+ * include/asm-xtensa/kmap_types.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_KMAP_TYPES_H
+#define _XTENSA_KMAP_TYPES_H
+
+enum km_type {
+  KM_BOUNCE_READ,
+  KM_SKB_SUNRPC_DATA,
+  KM_SKB_DATA_SOFTIRQ,
+  KM_USER0,
+  KM_USER1,
+  KM_BIO_SRC_IRQ,
+  KM_BIO_DST_IRQ,
+  KM_PTE0,
+  KM_PTE1,
+  KM_IRQ0,
+  KM_IRQ1,
+  KM_SOFTIRQ0,
+  KM_SOFTIRQ1,
+  KM_TYPE_NR
+};
+
+#endif  /* _XTENSA_KMAP_TYPES_H */
diff --git a/arch/xtensa/include/asm/linkage.h b/arch/xtensa/include/asm/linkage.h
new file mode 100644
index 000000000000..bf2128a99d79
--- /dev/null
+++ b/arch/xtensa/include/asm/linkage.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/linkage.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_LINKAGE_H
+#define _XTENSA_LINKAGE_H
+
+/* Nothing to do here ... */
+
+#endif  /* _XTENSA_LINKAGE_H */
diff --git a/arch/xtensa/include/asm/local.h b/arch/xtensa/include/asm/local.h
new file mode 100644
index 000000000000..48723e550d14
--- /dev/null
+++ b/arch/xtensa/include/asm/local.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/local.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_LOCAL_H
+#define _XTENSA_LOCAL_H
+
+#include <asm-generic/local.h>
+
+#endif /* _XTENSA_LOCAL_H */
diff --git a/arch/xtensa/include/asm/mman.h b/arch/xtensa/include/asm/mman.h
new file mode 100644
index 000000000000..9b92620c8a1e
--- /dev/null
+++ b/arch/xtensa/include/asm/mman.h
@@ -0,0 +1,84 @@
+/*
+ * include/asm-xtensa/mman.h
+ *
+ * Xtensa Processor memory-manager definitions
+ *
+ * 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.
+ *
+ * Copyright (C) 1995 by Ralf Baechle
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_MMAN_H
+#define _XTENSA_MMAN_H
+
+/*
+ * Protections are chosen from these bits, OR'd together.  The
+ * implementation does not necessarily support PROT_EXEC or PROT_WRITE
+ * without PROT_READ.  The only guarantees are that no writing will be
+ * allowed without PROT_WRITE and no access will be allowed for PROT_NONE.
+ */
+
+#define PROT_NONE       0x0             /* page can not be accessed */
+#define PROT_READ       0x1             /* page can be read */
+#define PROT_WRITE      0x2             /* page can be written */
+#define PROT_EXEC       0x4             /* page can be executed */
+
+#define PROT_SEM        0x10            /* page may be used for atomic ops */
+#define PROT_GROWSDOWN  0x01000000      /* mprotect flag: extend change to start of growsdown vma */
+#define PROT_GROWSUP    0x02000000      /* mprotect flag: extend change to end fo growsup vma */
+
+/*
+ * Flags for mmap
+ */
+#define MAP_SHARED      0x001           /* Share changes */
+#define MAP_PRIVATE     0x002           /* Changes are private */
+#define MAP_TYPE        0x00f           /* Mask for type of mapping */
+#define MAP_FIXED       0x010           /* Interpret addr exactly */
+
+/* not used by linux, but here to make sure we don't clash with ABI defines */
+#define MAP_RENAME      0x020           /* Assign page to file */
+#define MAP_AUTOGROW    0x040           /* File may grow by writing */
+#define MAP_LOCAL       0x080           /* Copy on fork/sproc */
+#define MAP_AUTORSRV    0x100           /* Logical swap reserved on demand */
+
+/* These are linux-specific */
+#define MAP_NORESERVE   0x0400          /* don't check for reservations */
+#define MAP_ANONYMOUS   0x0800          /* don't use a file */
+#define MAP_GROWSDOWN   0x1000          /* stack-like segment */
+#define MAP_DENYWRITE   0x2000          /* ETXTBSY */
+#define MAP_EXECUTABLE  0x4000          /* mark it as an executable */
+#define MAP_LOCKED      0x8000          /* pages are locked */
+#define MAP_POPULATE    0x10000         /* populate (prefault) pagetables */
+#define MAP_NONBLOCK    0x20000         /* do not block on IO */
+
+/*
+ * Flags for msync
+ */
+#define MS_ASYNC        0x0001          /* sync memory asynchronously */
+#define MS_INVALIDATE   0x0002          /* invalidate mappings & caches */
+#define MS_SYNC         0x0004          /* synchronous memory sync */
+
+/*
+ * Flags for mlockall
+ */
+#define MCL_CURRENT     1               /* lock all current mappings */
+#define MCL_FUTURE      2               /* lock all future mappings */
+
+#define MADV_NORMAL     0               /* no further special treatment */
+#define MADV_RANDOM     1               /* expect random page references */
+#define MADV_SEQUENTIAL 2               /* expect sequential page references */
+#define MADV_WILLNEED   3               /* will need these pages */
+#define MADV_DONTNEED   4               /* don't need these pages */
+
+/* common parameters: try to keep these consistent across architectures */
+#define MADV_REMOVE     9               /* remove these pages & resources */
+#define MADV_DONTFORK   10              /* don't inherit across fork */
+#define MADV_DOFORK     11              /* do inherit across fork */
+
+/* compatibility flags */
+#define MAP_FILE        0
+
+#endif /* _XTENSA_MMAN_H */
diff --git a/arch/xtensa/include/asm/mmu.h b/arch/xtensa/include/asm/mmu.h
new file mode 100644
index 000000000000..44c5bb04c55c
--- /dev/null
+++ b/arch/xtensa/include/asm/mmu.h
@@ -0,0 +1,17 @@
+/*
+ * include/asm-xtensa/mmu.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_MMU_H
+#define _XTENSA_MMU_H
+
+/* Default "unsigned long" context */
+typedef unsigned long mm_context_t;
+
+#endif  /* _XTENSA_MMU_H */
diff --git a/arch/xtensa/include/asm/mmu_context.h b/arch/xtensa/include/asm/mmu_context.h
new file mode 100644
index 000000000000..c0fd8e5b4513
--- /dev/null
+++ b/arch/xtensa/include/asm/mmu_context.h
@@ -0,0 +1,136 @@
+/*
+ * include/asm-xtensa/mmu_context.h
+ *
+ * Switch an MMU context.
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_MMU_CONTEXT_H
+#define _XTENSA_MMU_CONTEXT_H
+
+#include <linux/stringify.h>
+#include <linux/sched.h>
+
+#include <asm/pgtable.h>
+#include <asm/cacheflush.h>
+#include <asm/tlbflush.h>
+#include <asm-generic/mm_hooks.h>
+
+#define XCHAL_MMU_ASID_BITS     8
+
+#if (XCHAL_HAVE_TLBS != 1)
+# error "Linux must have an MMU!"
+#endif
+
+extern unsigned long asid_cache;
+
+/*
+ * NO_CONTEXT is the invalid ASID value that we don't ever assign to
+ * any user or kernel context.
+ *
+ * 0 invalid
+ * 1 kernel
+ * 2 reserved
+ * 3 reserved
+ * 4...255 available
+ */
+
+#define NO_CONTEXT      0
+#define ASID_USER_FIRST 4
+#define ASID_MASK       ((1 << XCHAL_MMU_ASID_BITS) - 1)
+#define ASID_INSERT(x)  (0x03020001 | (((x) & ASID_MASK) << 8))
+
+static inline void set_rasid_register (unsigned long val)
+{
+        __asm__ __volatile__ (" wsr %0, "__stringify(RASID)"\n\t"
+                              " isync\n" : : "a" (val));
+}
+
+static inline unsigned long get_rasid_register (void)
+{
+        unsigned long tmp;
+        __asm__ __volatile__ (" rsr %0,"__stringify(RASID)"\n\t" : "=a" (tmp));
+        return tmp;
+}
+
+static inline void
+__get_new_mmu_context(struct mm_struct *mm)
+{
+        extern void flush_tlb_all(void);
+        if (! (++asid_cache & ASID_MASK) ) {
+                flush_tlb_all(); /* start new asid cycle */
+                asid_cache += ASID_USER_FIRST;
+        }
+        mm->context = asid_cache;
+}
+
+static inline void
+__load_mmu_context(struct mm_struct *mm)
+{
+        set_rasid_register(ASID_INSERT(mm->context));
+        invalidate_page_directory();
+}
+
+/*
+ * Initialize the context related info for a new mm_struct
+ * instance.
+ */
+
+static inline int
+init_new_context(struct task_struct *tsk, struct mm_struct *mm)
+{
+        mm->context = NO_CONTEXT;
+        return 0;
+}
+
+/*
+ * After we have set current->mm to a new value, this activates
+ * the context for the new mm so we see the new mappings.
+ */
+static inline void
+activate_mm(struct mm_struct *prev, struct mm_struct *next)
+{
+        /* Unconditionally get a new ASID.  */
+
+        __get_new_mmu_context(next);
+        __load_mmu_context(next);
+}
+
+
+static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
+                             struct task_struct *tsk)
+{
+        unsigned long asid = asid_cache;
+
+        /* Check if our ASID is of an older version and thus invalid */
+
+        if (next->context == NO_CONTEXT || ((next->context^asid) & ~ASID_MASK))
+                __get_new_mmu_context(next);
+
+        __load_mmu_context(next);
+}
+
+#define deactivate_mm(tsk, mm)  do { } while(0)
+
+/*
+ * Destroy context related info for an mm_struct that is about
+ * to be put to rest.
+ */
+static inline void destroy_context(struct mm_struct *mm)
+{
+        invalidate_page_directory();
+}
+
+
+static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
+{
+        /* Nothing to do. */
+
+}
+
+#endif /* _XTENSA_MMU_CONTEXT_H */
diff --git a/arch/xtensa/include/asm/module.h b/arch/xtensa/include/asm/module.h
new file mode 100644
index 000000000000..d9b34bee4d42
--- /dev/null
+++ b/arch/xtensa/include/asm/module.h
@@ -0,0 +1,27 @@
+/*
+ * include/asm-xtensa/module.h
+ *
+ * This file contains the module code specific to the Xtensa 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_MODULE_H
+#define _XTENSA_MODULE_H
+
+struct mod_arch_specific
+{
+        /* No special elements, yet. */
+};
+
+#define MODULE_ARCH_VERMAGIC "xtensa-" __stringify(XCHAL_CORE_ID) " "
+
+#define Elf_Shdr Elf32_Shdr
+#define Elf_Sym Elf32_Sym
+#define Elf_Ehdr Elf32_Ehdr
+
+#endif  /* _XTENSA_MODULE_H */
diff --git a/arch/xtensa/include/asm/msgbuf.h b/arch/xtensa/include/asm/msgbuf.h
new file mode 100644
index 000000000000..693c96755280
--- /dev/null
+++ b/arch/xtensa/include/asm/msgbuf.h
@@ -0,0 +1,48 @@
+/*
+ * include/asm-xtensa/msgbuf.h
+ *
+ * The msqid64_ds structure for the Xtensa architecture.
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space.
+ *
+ * Pad space is left for:
+ * - 64-bit time_t to solve y2038 problem
+ * - 2 miscellaneous 32-bit values
+ *
+ * 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.
+ */
+
+#ifndef _XTENSA_MSGBUF_H
+#define _XTENSA_MSGBUF_H
+
+struct msqid64_ds {
+        struct ipc64_perm msg_perm;
+#ifdef __XTENSA_EB__
+        unsigned int    __unused1;
+        __kernel_time_t msg_stime;      /* last msgsnd time */
+        unsigned int    __unused2;
+        __kernel_time_t msg_rtime;      /* last msgrcv time */
+        unsigned int    __unused3;
+        __kernel_time_t msg_ctime;      /* last change time */
+#elif defined(__XTENSA_EL__)
+        __kernel_time_t msg_stime;      /* last msgsnd time */
+        unsigned int    __unused1;
+        __kernel_time_t msg_rtime;      /* last msgrcv time */
+        unsigned int    __unused2;
+        __kernel_time_t msg_ctime;      /* last change time */
+        unsigned int    __unused3;
+#else
+# error processor byte order undefined!
+#endif
+        unsigned long  msg_cbytes;      /* current number of bytes on queue */
+        unsigned long  msg_qnum;        /* number of messages in queue */
+        unsigned long  msg_qbytes;      /* max number of bytes on queue */
+        __kernel_pid_t msg_lspid;       /* pid of last msgsnd */
+        __kernel_pid_t msg_lrpid;       /* last receive pid */
+        unsigned long  __unused4;
+        unsigned long  __unused5;
+};
+
+#endif  /* _XTENSA_MSGBUF_H */
diff --git a/arch/xtensa/include/asm/mutex.h b/arch/xtensa/include/asm/mutex.h
new file mode 100644
index 000000000000..458c1f7fbc18
--- /dev/null
+++ b/arch/xtensa/include/asm/mutex.h
@@ -0,0 +1,9 @@
+/*
+ * Pull in the generic implementation for the mutex fastpath.
+ *
+ * TODO: implement optimized primitives instead, or leave the generic
+ * implementation in place, or pick the atomic_xchg() based generic
+ * implementation. (see asm-generic/mutex-xchg.h for details)
+ */
+
+#include <asm-generic/mutex-dec.h>
diff --git a/arch/xtensa/include/asm/page.h b/arch/xtensa/include/asm/page.h
new file mode 100644
index 000000000000..11f7dc2dbec7
--- /dev/null
+++ b/arch/xtensa/include/asm/page.h
@@ -0,0 +1,174 @@
+/*
+ * include/asm-xtensa/page.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version2 as
+ * published by the Free Software Foundation.
+ *
+ * Copyright (C) 2001 - 2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PAGE_H
+#define _XTENSA_PAGE_H
+
+#include <asm/processor.h>
+#include <asm/types.h>
+#include <asm/cache.h>
+
+/*
+ * Fixed TLB translations in the processor.
+ */
+
+#define XCHAL_KSEG_CACHED_VADDR 0xd0000000
+#define XCHAL_KSEG_BYPASS_VADDR 0xd8000000
+#define XCHAL_KSEG_PADDR        0x00000000
+#define XCHAL_KSEG_SIZE         0x08000000
+
+/*
+ * PAGE_SHIFT determines the page size
+ */
+
+#define PAGE_SHIFT              12
+#define PAGE_SIZE               (__XTENSA_UL_CONST(1) << PAGE_SHIFT)
+#define PAGE_MASK               (~(PAGE_SIZE-1))
+
+#define PAGE_OFFSET             XCHAL_KSEG_CACHED_VADDR
+#define MAX_MEM_PFN             XCHAL_KSEG_SIZE
+#define PGTABLE_START           0x80000000
+
+/*
+ * Cache aliasing:
+ *
+ * If the cache size for one way is greater than the page size, we have to
+ * deal with cache aliasing. The cache index is wider than the page size:
+ *
+ * |    |cache| cache index
+ * | pfn  |off| virtual address
+ * |xxxx:X|zzz|
+ * |    : |   |
+ * | \  / |   |
+ * |trans.|   |
+ * | /  \ |   |
+ * |yyyy:Y|zzz| physical address
+ *
+ * When the page number is translated to the physical page address, the lowest
+ * bit(s) (X) that are part of the cache index are also translated (Y).
+ * If this translation changes bit(s) (X), the cache index is also afected,
+ * thus resulting in a different cache line than before.
+ * The kernel does not provide a mechanism to ensure that the page color
+ * (represented by this bit) remains the same when allocated or when pages
+ * are remapped. When user pages are mapped into kernel space, the color of
+ * the page might also change.
+ *
+ * We use the address space VMALLOC_END ... VMALLOC_END + DCACHE_WAY_SIZE * 2
+ * to temporarily map a patch so we can match the color.
+ */
+
+#if DCACHE_WAY_SIZE > PAGE_SIZE
+# define DCACHE_ALIAS_ORDER     (DCACHE_WAY_SHIFT - PAGE_SHIFT)
+# define DCACHE_ALIAS_MASK      (PAGE_MASK & (DCACHE_WAY_SIZE - 1))
+# define DCACHE_ALIAS(a)        (((a) & DCACHE_ALIAS_MASK) >> PAGE_SHIFT)
+# define DCACHE_ALIAS_EQ(a,b)   ((((a) ^ (b)) & DCACHE_ALIAS_MASK) == 0)
+#else
+# define DCACHE_ALIAS_ORDER     0
+#endif
+
+#if ICACHE_WAY_SIZE > PAGE_SIZE
+# define ICACHE_ALIAS_ORDER     (ICACHE_WAY_SHIFT - PAGE_SHIFT)
+# define ICACHE_ALIAS_MASK      (PAGE_MASK & (ICACHE_WAY_SIZE - 1))
+# define ICACHE_ALIAS(a)        (((a) & ICACHE_ALIAS_MASK) >> PAGE_SHIFT)
+# define ICACHE_ALIAS_EQ(a,b)   ((((a) ^ (b)) & ICACHE_ALIAS_MASK) == 0)
+#else
+# define ICACHE_ALIAS_ORDER     0
+#endif
+
+
+#ifdef __ASSEMBLY__
+
+#define __pgprot(x)     (x)
+
+#else
+
+/*
+ * These are used to make use of C type-checking..
+ */
+
+typedef struct { unsigned long pte; } pte_t;            /* page table entry */
+typedef struct { unsigned long pgd; } pgd_t;            /* PGD table entry */
+typedef struct { unsigned long pgprot; } pgprot_t;
+typedef struct page *pgtable_t;
+
+#define pte_val(x)      ((x).pte)
+#define pgd_val(x)      ((x).pgd)
+#define pgprot_val(x)   ((x).pgprot)
+
+#define __pte(x)        ((pte_t) { (x) } )
+#define __pgd(x)        ((pgd_t) { (x) } )
+#define __pgprot(x)     ((pgprot_t) { (x) } )
+
+/*
+ * Pure 2^n version of get_order
+ * Use 'nsau' instructions if supported by the processor or the generic version.
+ */
+
+#if XCHAL_HAVE_NSA
+
+static inline __attribute_const__ int get_order(unsigned long size)
+{
+        int lz;
+        asm ("nsau %0, %1" : "=r" (lz) : "r" ((size - 1) >> PAGE_SHIFT));
+        return 32 - lz;
+}
+
+#else
+
+# include <asm-generic/page.h>
+
+#endif
+
+struct page;
+extern void clear_page(void *page);
+extern void copy_page(void *to, void *from);
+
+/*
+ * If we have cache aliasing and writeback caches, we might have to do
+ * some extra work
+ */
+
+#if DCACHE_WAY_SIZE > PAGE_SIZE
+extern void clear_user_page(void*, unsigned long, struct page*);
+extern void copy_user_page(void*, void*, unsigned long, struct page*);
+#else
+# define clear_user_page(page, vaddr, pg)       clear_page(page)
+# define copy_user_page(to, from, vaddr, pg)    copy_page(to, from)
+#endif
+
+/*
+ * This handles the memory map.  We handle pages at
+ * XCHAL_KSEG_CACHED_VADDR for kernels with 32 bit address space.
+ * These macros are for conversion of kernel address, not user
+ * addresses.
+ */
+
+#define __pa(x)                 ((unsigned long) (x) - PAGE_OFFSET)
+#define __va(x)                 ((void *)((unsigned long) (x) + PAGE_OFFSET))
+#define pfn_valid(pfn)          ((unsigned long)pfn < max_mapnr)
+#ifdef CONFIG_DISCONTIGMEM
+# error CONFIG_DISCONTIGMEM not supported
+#endif
+
+#define virt_to_page(kaddr)     pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
+#define page_to_virt(page)      __va(page_to_pfn(page) << PAGE_SHIFT)
+#define virt_addr_valid(kaddr)  pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
+#define page_to_phys(page)      (page_to_pfn(page) << PAGE_SHIFT)
+
+#define WANT_PAGE_VIRTUAL
+
+
+#endif /* __ASSEMBLY__ */
+
+#define VM_DATA_DEFAULT_FLAGS   (VM_READ | VM_WRITE | VM_EXEC | \
+                                 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+
+#include <asm-generic/memory_model.h>
+#endif /* _XTENSA_PAGE_H */
diff --git a/arch/xtensa/include/asm/param.h b/arch/xtensa/include/asm/param.h
new file mode 100644
index 000000000000..ba03d5aeab6b
--- /dev/null
+++ b/arch/xtensa/include/asm/param.h
@@ -0,0 +1,34 @@
+/*
+ * include/asm-xtensa/param.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PARAM_H
+#define _XTENSA_PARAM_H
+
+#ifdef __KERNEL__
+# define HZ             CONFIG_HZ       /* internal timer frequency */
+# define USER_HZ        100             /* for user interfaces in "ticks" */
+# define CLOCKS_PER_SEC (USER_HZ)       /* frequnzy at which times() counts */
+#else
+# define HZ             100
+#endif
+
+#define EXEC_PAGESIZE   4096
+
+#ifndef NGROUPS
+#define NGROUPS         32
+#endif
+
+#ifndef NOGROUP
+#define NOGROUP         (-1)
+#endif
+
+#define MAXHOSTNAMELEN  64      /* max length of hostname */
+
+#endif /* _XTENSA_PARAM_H */
diff --git a/arch/xtensa/include/asm/pci-bridge.h b/arch/xtensa/include/asm/pci-bridge.h
new file mode 100644
index 000000000000..00fcbd7c534a
--- /dev/null
+++ b/arch/xtensa/include/asm/pci-bridge.h
@@ -0,0 +1,88 @@
+/*
+ * include/asm-xtensa/pci-bridge.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PCI_BRIDGE_H
+#define _XTENSA_PCI_BRIDGE_H
+
+#ifdef __KERNEL__
+
+struct device_node;
+struct pci_controller;
+
+/*
+ * pciauto_bus_scan() enumerates the pci space.
+ */
+
+extern int pciauto_bus_scan(struct pci_controller *, int);
+
+struct pci_space {
+        unsigned long start;
+        unsigned long end;
+        unsigned long base;
+};
+
+/*
+ * Structure of a PCI controller (host bridge)
+ */
+
+struct pci_controller {
+        int index;                      /* used for pci_controller_num */
+        struct pci_controller *next;
+        struct pci_bus *bus;
+        void *arch_data;
+
+        int first_busno;
+        int last_busno;
+
+        struct pci_ops *ops;
+        volatile unsigned int *cfg_addr;
+        volatile unsigned char *cfg_data;
+
+        /* Currently, we limit ourselves to 1 IO range and 3 mem
+         * ranges since the common pci_bus structure can't handle more
+         */
+        struct resource io_resource;
+        struct resource mem_resources[3];
+        int mem_resource_count;
+
+        /* Host bridge I/O and Memory space
+         * Used for BAR placement algorithms
+         */
+        struct pci_space io_space;
+        struct pci_space mem_space;
+
+        /* Return the interrupt number fo a device. */
+        int (*map_irq)(struct pci_dev*, u8, u8);
+
+};
+
+static inline void pcibios_init_resource(struct resource *res,
+                unsigned long start, unsigned long end, int flags, char *name)
+{
+        res->start = start;
+        res->end = end;
+        res->flags = flags;
+        res->name = name;
+        res->parent = NULL;
+        res->sibling = NULL;
+        res->child = NULL;
+}
+
+
+/* These are used for config access before all the PCI probing has been done. */
+int early_read_config_byte(struct pci_controller*, int, int, int, u8*);
+int early_read_config_word(struct pci_controller*, int, int, int, u16*);
+int early_read_config_dword(struct pci_controller*, int, int, int, u32*);
+int early_write_config_byte(struct pci_controller*, int, int, int, u8);
+int early_write_config_word(struct pci_controller*, int, int, int, u16);
+int early_write_config_dword(struct pci_controller*, int, int, int, u32);
+
+#endif  /* __KERNEL__ */
+#endif  /* _XTENSA_PCI_BRIDGE_H */
diff --git a/arch/xtensa/include/asm/pci.h b/arch/xtensa/include/asm/pci.h
new file mode 100644
index 000000000000..66410acf18b4
--- /dev/null
+++ b/arch/xtensa/include/asm/pci.h
@@ -0,0 +1,82 @@
+/*
+ * linux/include/asm-xtensa/pci.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PCI_H
+#define _XTENSA_PCI_H
+
+#ifdef __KERNEL__
+
+/* Can be used to override the logic in pci_scan_bus for skipping
+ * already-configured bus numbers - to be used for buggy BIOSes
+ * or architectures with incomplete PCI setup by the loader
+ */
+
+#define pcibios_assign_all_busses()     0
+
+extern struct pci_controller* pcibios_alloc_controller(void);
+
+static inline void pcibios_set_master(struct pci_dev *dev)
+{
+        /* No special bus mastering setup handling */
+}
+
+static inline void pcibios_penalize_isa_irq(int irq)
+{
+        /* We don't do dynamic PCI IRQ allocation */
+}
+
+/* Assume some values. (We should revise them, if necessary) */
+
+#define PCIBIOS_MIN_IO          0x2000
+#define PCIBIOS_MIN_MEM         0x10000000
+
+/* Dynamic DMA mapping stuff.
+ * Xtensa has everything mapped statically like x86.
+ */
+
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <asm/scatterlist.h>
+#include <linux/string.h>
+#include <asm/io.h>
+
+struct pci_dev;
+
+/* The PCI address space does equal the physical memory address space.
+ * The networking and block device layers use this boolean for bounce buffer
+ * decisions.
+ */
+
+#define PCI_DMA_BUS_IS_PHYS     (1)
+
+/* pci_unmap_{page,single} is a no-op, so */
+#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
+#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
+#define pci_unmap_addr(PTR, ADDR_NAME)          (0)
+#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
+#define pci_ubnmap_len(PTR, LEN_NAME)           (0)
+#define pci_unmap_len_set(PTR, LEN_NAME, VAL)   do { } while (0)
+
+/* Map a range of PCI memory or I/O space for a device into user space */
+int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
+                        enum pci_mmap_state mmap_state, int write_combine);
+
+/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
+#define HAVE_PCI_MMAP   1
+
+#endif /* __KERNEL__ */
+
+/* Implement the pci_ DMA API in terms of the generic device dma_ one */
+#include <asm-generic/pci-dma-compat.h>
+
+/* Generic PCI */
+#include <asm-generic/pci.h>
+
+#endif  /* _XTENSA_PCI_H */
diff --git a/arch/xtensa/include/asm/percpu.h b/arch/xtensa/include/asm/percpu.h
new file mode 100644
index 000000000000..6d2bc2ada9d1
--- /dev/null
+++ b/arch/xtensa/include/asm/percpu.h
@@ -0,0 +1,16 @@
+/*
+ * linux/include/asm-xtensa/percpu.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PERCPU__
+#define _XTENSA_PERCPU__
+
+#include <asm-generic/percpu.h>
+
+#endif /* _XTENSA_PERCPU__ */
diff --git a/arch/xtensa/include/asm/pgalloc.h b/arch/xtensa/include/asm/pgalloc.h
new file mode 100644
index 000000000000..4f4a7987eded
--- /dev/null
+++ b/arch/xtensa/include/asm/pgalloc.h
@@ -0,0 +1,73 @@
+/*
+ * include/asm-xtensa/pgalloc.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Copyright (C) 2001-2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PGALLOC_H
+#define _XTENSA_PGALLOC_H
+
+#ifdef __KERNEL__
+
+#include <linux/highmem.h>
+
+/*
+ * Allocating and freeing a pmd is trivial: the 1-entry pmd is
+ * inside the pgd, so has no extra memory associated with it.
+ */
+
+#define pmd_populate_kernel(mm, pmdp, ptep)                                  \
+        (pmd_val(*(pmdp)) = ((unsigned long)ptep))
+#define pmd_populate(mm, pmdp, page)                                         \
+        (pmd_val(*(pmdp)) = ((unsigned long)page_to_virt(page)))
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+static inline pgd_t*
+pgd_alloc(struct mm_struct *mm)
+{
+        return (pgd_t*) __get_free_pages(GFP_KERNEL | __GFP_ZERO, PGD_ORDER);
+}
+
+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+        free_page((unsigned long)pgd);
+}
+
+/* Use a slab cache for the pte pages (see also sparc64 implementation) */
+
+extern struct kmem_cache *pgtable_cache;
+
+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, 
+                                         unsigned long address)
+{
+        return kmem_cache_alloc(pgtable_cache, GFP_KERNEL|__GFP_REPEAT);
+}
+
+static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
+                                        unsigned long addr)
+{
+        struct page *page;
+
+        page = virt_to_page(pte_alloc_one_kernel(mm, addr));
+        pgtable_page_ctor(page);
+        return page;
+}
+
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+        kmem_cache_free(pgtable_cache, pte);
+}
+
+static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
+{
+        pgtable_page_dtor(pte);
+        kmem_cache_free(pgtable_cache, page_address(pte));
+}
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+#endif /* __KERNEL__ */
+#endif /* _XTENSA_PGALLOC_H */
diff --git a/arch/xtensa/include/asm/pgtable.h b/arch/xtensa/include/asm/pgtable.h
new file mode 100644
index 000000000000..8014d96b21f1
--- /dev/null
+++ b/arch/xtensa/include/asm/pgtable.h
@@ -0,0 +1,416 @@
+/*
+ * include/asm-xtensa/pgtable.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Copyright (C) 2001 - 2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PGTABLE_H
+#define _XTENSA_PGTABLE_H
+
+#include <asm-generic/pgtable-nopmd.h>
+#include <asm/page.h>
+
+/*
+ * We only use two ring levels, user and kernel space.
+ */
+
+#define USER_RING               1       /* user ring level */
+#define KERNEL_RING             0       /* kernel ring level */
+
+/*
+ * The Xtensa architecture port of Linux has a two-level page table system,
+ * i.e. the logical three-level Linux page table layout is folded.
+ * Each task has the following memory page tables:
+ *
+ *   PGD table (page directory), ie. 3rd-level page table:
+ *      One page (4 kB) of 1024 (PTRS_PER_PGD) pointers to PTE tables
+ *      (Architectures that don't have the PMD folded point to the PMD tables)
+ *
+ *      The pointer to the PGD table for a given task can be retrieved from
+ *      the task structure (struct task_struct*) t, e.g. current():
+ *        (t->mm ? t->mm : t->active_mm)->pgd
+ *
+ *   PMD tables (page middle-directory), ie. 2nd-level page tables:
+ *      Absent for the Xtensa architecture (folded, PTRS_PER_PMD == 1).
+ *
+ *   PTE tables (page table entry), ie. 1st-level page tables:
+ *      One page (4 kB) of 1024 (PTRS_PER_PTE) PTEs with a special PTE
+ *      invalid_pte_table for absent mappings.
+ *
+ * The individual pages are 4 kB big with special pages for the empty_zero_page.
+ */
+
+#define PGDIR_SHIFT     22
+#define PGDIR_SIZE      (1UL << PGDIR_SHIFT)
+#define PGDIR_MASK      (~(PGDIR_SIZE-1))
+
+/*
+ * Entries per page directory level: we use two-level, so
+ * we don't really have any PMD directory physically.
+ */
+#define PTRS_PER_PTE            1024
+#define PTRS_PER_PTE_SHIFT      10
+#define PTRS_PER_PGD            1024
+#define PGD_ORDER               0
+#define USER_PTRS_PER_PGD       (TASK_SIZE/PGDIR_SIZE)
+#define FIRST_USER_ADDRESS      0
+#define FIRST_USER_PGD_NR       (FIRST_USER_ADDRESS >> PGDIR_SHIFT)
+
+/*
+ * Virtual memory area. We keep a distance to other memory regions to be
+ * on the safe side. We also use this area for cache aliasing.
+ */
+
+#define VMALLOC_START           0xC0000000
+#define VMALLOC_END             0xC7FEFFFF
+#define TLBTEMP_BASE_1          0xC7FF0000
+#define TLBTEMP_BASE_2          0xC7FF8000
+
+/*
+ * Xtensa Linux config PTE layout (when present):
+ *      31-12:  PPN
+ *      11-6:   Software
+ *      5-4:    RING
+ *      3-0:    CA
+ *
+ * Similar to the Alpha and MIPS ports, we need to keep track of the ref
+ * and mod bits in software.  We have a software "you can read
+ * from this page" bit, and a hardware one which actually lets the
+ * process read from the page.  On the same token we have a software
+ * writable bit and the real hardware one which actually lets the
+ * process write to the page.
+ *
+ * See further below for PTE layout for swapped-out pages.
+ */
+
+#define _PAGE_HW_EXEC           (1<<0)  /* hardware: page is executable */
+#define _PAGE_HW_WRITE          (1<<1)  /* hardware: page is writable */
+
+#define _PAGE_FILE              (1<<1)  /* non-linear mapping, if !present */
+#define _PAGE_PROTNONE          (3<<0)  /* special case for VM_PROT_NONE */
+
+/* None of these cache modes include MP coherency:  */
+#define _PAGE_CA_BYPASS         (0<<2)  /* bypass, non-speculative */
+#define _PAGE_CA_WB             (1<<2)  /* write-back */
+#define _PAGE_CA_WT             (2<<2)  /* write-through */
+#define _PAGE_CA_MASK           (3<<2)
+#define _PAGE_INVALID           (3<<2)
+
+#define _PAGE_USER              (1<<4)  /* user access (ring=1) */
+
+/* Software */
+#define _PAGE_WRITABLE_BIT      6
+#define _PAGE_WRITABLE          (1<<6)  /* software: page writable */
+#define _PAGE_DIRTY             (1<<7)  /* software: page dirty */
+#define _PAGE_ACCESSED          (1<<8)  /* software: page accessed (read) */
+
+/* On older HW revisions, we always have to set bit 0 */
+#if XCHAL_HW_VERSION_MAJOR < 2000
+# define _PAGE_VALID            (1<<0)
+#else
+# define _PAGE_VALID            0
+#endif
+
+#define _PAGE_CHG_MASK  (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
+#define _PAGE_PRESENT   (_PAGE_VALID | _PAGE_CA_WB | _PAGE_ACCESSED)
+
+#ifdef CONFIG_MMU
+
+#define PAGE_NONE          __pgprot(_PAGE_INVALID | _PAGE_USER | _PAGE_PROTNONE)
+#define PAGE_COPY          __pgprot(_PAGE_PRESENT | _PAGE_USER)
+#define PAGE_COPY_EXEC     __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_HW_EXEC)
+#define PAGE_READONLY      __pgprot(_PAGE_PRESENT | _PAGE_USER)
+#define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_HW_EXEC)
+#define PAGE_SHARED        __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_WRITABLE)
+#define PAGE_SHARED_EXEC \
+        __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_WRITABLE | _PAGE_HW_EXEC)
+#define PAGE_KERNEL        __pgprot(_PAGE_PRESENT | _PAGE_HW_WRITE)
+#define PAGE_KERNEL_EXEC   __pgprot(_PAGE_PRESENT|_PAGE_HW_WRITE|_PAGE_HW_EXEC)
+
+#if (DCACHE_WAY_SIZE > PAGE_SIZE)
+# define _PAGE_DIRECTORY (_PAGE_VALID | _PAGE_ACCESSED)
+#else
+# define _PAGE_DIRECTORY (_PAGE_VALID | _PAGE_ACCESSED | _PAGE_CA_WB)
+#endif
+
+#else /* no mmu */
+
+# define PAGE_NONE       __pgprot(0)
+# define PAGE_SHARED     __pgprot(0)
+# define PAGE_COPY       __pgprot(0)
+# define PAGE_READONLY   __pgprot(0)
+# define PAGE_KERNEL     __pgprot(0)
+
+#endif
+
+/*
+ * On certain configurations of Xtensa MMUs (eg. the initial Linux config),
+ * the MMU can't do page protection for execute, and considers that the same as
+ * read.  Also, write permissions may imply read permissions.
+ * What follows is the closest we can get by reasonable means..
+ * See linux/mm/mmap.c for protection_map[] array that uses these definitions.
+ */
+#define __P000  PAGE_NONE               /* private --- */
+#define __P001  PAGE_READONLY           /* private --r */
+#define __P010  PAGE_COPY               /* private -w- */
+#define __P011  PAGE_COPY               /* private -wr */
+#define __P100  PAGE_READONLY_EXEC      /* private x-- */
+#define __P101  PAGE_READONLY_EXEC      /* private x-r */
+#define __P110  PAGE_COPY_EXEC          /* private xw- */
+#define __P111  PAGE_COPY_EXEC          /* private xwr */
+
+#define __S000  PAGE_NONE               /* shared  --- */
+#define __S001  PAGE_READONLY           /* shared  --r */
+#define __S010  PAGE_SHARED             /* shared  -w- */
+#define __S011  PAGE_SHARED             /* shared  -wr */
+#define __S100  PAGE_READONLY_EXEC      /* shared  x-- */
+#define __S101  PAGE_READONLY_EXEC      /* shared  x-r */
+#define __S110  PAGE_SHARED_EXEC        /* shared  xw- */
+#define __S111  PAGE_SHARED_EXEC        /* shared  xwr */
+
+#ifndef __ASSEMBLY__
+
+#define pte_ERROR(e) \
+        printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
+#define pgd_ERROR(e) \
+        printk("%s:%d: bad pgd entry %08lx.\n", __FILE__, __LINE__, pgd_val(e))
+
+extern unsigned long empty_zero_page[1024];
+
+#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
+
+extern pgd_t swapper_pg_dir[PAGE_SIZE/sizeof(pgd_t)];
+
+/*
+ * The pmd contains the kernel virtual address of the pte page.
+ */
+#define pmd_page_vaddr(pmd) ((unsigned long)(pmd_val(pmd) & PAGE_MASK))
+#define pmd_page(pmd) virt_to_page(pmd_val(pmd))
+
+/*
+ * pte status.
+ */
+#define pte_none(pte)    (pte_val(pte) == _PAGE_INVALID)
+#define pte_present(pte)                                                \
+        (((pte_val(pte) & _PAGE_CA_MASK) != _PAGE_INVALID)              \
+         || ((pte_val(pte) & _PAGE_PROTNONE) == _PAGE_PROTNONE))
+#define pte_clear(mm,addr,ptep)                                         \
+        do { update_pte(ptep, __pte(_PAGE_INVALID)); } while(0)
+
+#define pmd_none(pmd)    (!pmd_val(pmd))
+#define pmd_present(pmd) (pmd_val(pmd) & PAGE_MASK)
+#define pmd_bad(pmd)     (pmd_val(pmd) & ~PAGE_MASK)
+#define pmd_clear(pmdp)  do { set_pmd(pmdp, __pmd(0)); } while (0)
+
+static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITABLE; }
+static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
+static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
+static inline int pte_file(pte_t pte)  { return pte_val(pte) & _PAGE_FILE; }
+static inline int pte_special(pte_t pte) { return 0; }
+
+static inline pte_t pte_wrprotect(pte_t pte)    
+        { pte_val(pte) &= ~(_PAGE_WRITABLE | _PAGE_HW_WRITE); return pte; }
+static inline pte_t pte_mkclean(pte_t pte)
+        { pte_val(pte) &= ~(_PAGE_DIRTY | _PAGE_HW_WRITE); return pte; }
+static inline pte_t pte_mkold(pte_t pte)
+        { pte_val(pte) &= ~_PAGE_ACCESSED; return pte; }
+static inline pte_t pte_mkdirty(pte_t pte)
+        { pte_val(pte) |= _PAGE_DIRTY; return pte; }
+static inline pte_t pte_mkyoung(pte_t pte)
+        { pte_val(pte) |= _PAGE_ACCESSED; return pte; }
+static inline pte_t pte_mkwrite(pte_t pte)
+        { pte_val(pte) |= _PAGE_WRITABLE; return pte; }
+static inline pte_t pte_mkspecial(pte_t pte)
+        { return pte; }
+
+/*
+ * Conversion functions: convert a page and protection to a page entry,
+ * and a page entry and page directory to the page they refer to.
+ */
+
+#define pte_pfn(pte)            (pte_val(pte) >> PAGE_SHIFT)
+#define pte_same(a,b)           (pte_val(a) == pte_val(b))
+#define pte_page(x)             pfn_to_page(pte_pfn(x))
+#define pfn_pte(pfn, prot)      __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
+#define mk_pte(page, prot)      pfn_pte(page_to_pfn(page), prot)
+
+static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
+{
+        return __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot));
+}
+
+/*
+ * Certain architectures need to do special things when pte's
+ * within a page table are directly modified.  Thus, the following
+ * hook is made available.
+ */
+static inline void update_pte(pte_t *ptep, pte_t pteval)
+{
+        *ptep = pteval;
+#if (DCACHE_WAY_SIZE > PAGE_SIZE) && XCHAL_DCACHE_IS_WRITEBACK
+        __asm__ __volatile__ ("dhwb %0, 0" :: "a" (ptep));
+#endif
+
+}
+
+struct mm_struct;
+
+static inline void
+set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pteval)
+{
+        update_pte(ptep, pteval);
+}
+
+
+static inline void
+set_pmd(pmd_t *pmdp, pmd_t pmdval)
+{
+        *pmdp = pmdval;
+}
+
+struct vm_area_struct;
+
+static inline int
+ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned long addr,
+                          pte_t *ptep)
+{
+        pte_t pte = *ptep;
+        if (!pte_young(pte))
+                return 0;
+        update_pte(ptep, pte_mkold(pte));
+        return 1;
+}
+
+static inline pte_t
+ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
+{
+        pte_t pte = *ptep;
+        pte_clear(mm, addr, ptep);
+        return pte;
+}
+
+static inline void
+ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
+{
+        pte_t pte = *ptep;
+        update_pte(ptep, pte_wrprotect(pte));
+}
+
+/* to find an entry in a kernel page-table-directory */
+#define pgd_offset_k(address)   pgd_offset(&init_mm, address)
+
+/* to find an entry in a page-table-directory */
+#define pgd_offset(mm,address)  ((mm)->pgd + pgd_index(address))
+
+#define pgd_index(address)      ((address) >> PGDIR_SHIFT)
+
+/* Find an entry in the second-level page table.. */
+#define pmd_offset(dir,address) ((pmd_t*)(dir))
+
+/* Find an entry in the third-level page table.. */
+#define pte_index(address)      (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
+#define pte_offset_kernel(dir,addr)                                     \
+        ((pte_t*) pmd_page_vaddr(*(dir)) + pte_index(addr))
+#define pte_offset_map(dir,addr)        pte_offset_kernel((dir),(addr))
+#define pte_offset_map_nested(dir,addr) pte_offset_kernel((dir),(addr))
+
+#define pte_unmap(pte)          do { } while (0)
+#define pte_unmap_nested(pte)   do { } while (0)
+
+
+/*
+ * Encode and decode a swap entry.
+ *
+ * Format of swap pte:
+ *  bit    0       MBZ
+ *  bit    1       page-file (must be zero)
+ *  bits   2 -  3  page hw access mode (must be 11: _PAGE_INVALID)
+ *  bits   4 -  5  ring protection (must be 01: _PAGE_USER)
+ *  bits   6 - 10  swap type (5 bits -> 32 types)
+ *  bits  11 - 31  swap offset / PAGE_SIZE (21 bits -> 8GB)
+ 
+ * Format of file pte:
+ *  bit    0       MBZ
+ *  bit    1       page-file (must be one: _PAGE_FILE)
+ *  bits   2 -  3  page hw access mode (must be 11: _PAGE_INVALID)
+ *  bits   4 -  5  ring protection (must be 01: _PAGE_USER)
+ *  bits   6 - 31  file offset / PAGE_SIZE
+ */
+
+#define __swp_type(entry)       (((entry).val >> 6) & 0x1f)
+#define __swp_offset(entry)     ((entry).val >> 11)
+#define __swp_entry(type,offs)  \
+        ((swp_entry_t) {((type) << 6) | ((offs) << 11) | _PAGE_INVALID})
+#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
+#define __swp_entry_to_pte(x)   ((pte_t) { (x).val })
+
+#define PTE_FILE_MAX_BITS       28
+#define pte_to_pgoff(pte)       (pte_val(pte) >> 4)
+#define pgoff_to_pte(off)       \
+        ((pte_t) { ((off) << 4) | _PAGE_INVALID | _PAGE_FILE })
+
+#endif /*  !defined (__ASSEMBLY__) */
+
+
+#ifdef __ASSEMBLY__
+
+/* Assembly macro _PGD_INDEX is the same as C pgd_index(unsigned long),
+ *                _PGD_OFFSET as C pgd_offset(struct mm_struct*, unsigned long),
+ *                _PMD_OFFSET as C pmd_offset(pgd_t*, unsigned long)
+ *                _PTE_OFFSET as C pte_offset(pmd_t*, unsigned long)
+ *
+ * Note: We require an additional temporary register which can be the same as
+ *       the register that holds the address.
+ *
+ * ((pte_t*) ((unsigned long)(pmd_val(*pmd) & PAGE_MASK)) + pte_index(addr))
+ *
+ */
+#define _PGD_INDEX(rt,rs)       extui   rt, rs, PGDIR_SHIFT, 32-PGDIR_SHIFT
+#define _PTE_INDEX(rt,rs)       extui   rt, rs, PAGE_SHIFT, PTRS_PER_PTE_SHIFT
+
+#define _PGD_OFFSET(mm,adr,tmp)         l32i    mm, mm, MM_PGD;         \
+                                        _PGD_INDEX(tmp, adr);           \
+                                        addx4   mm, tmp, mm
+
+#define _PTE_OFFSET(pmd,adr,tmp)        _PTE_INDEX(tmp, adr);           \
+                                        srli    pmd, pmd, PAGE_SHIFT;   \
+                                        slli    pmd, pmd, PAGE_SHIFT;   \
+                                        addx4   pmd, tmp, pmd
+
+#else
+
+extern void paging_init(void);
+
+#define kern_addr_valid(addr)   (1)
+
+extern  void update_mmu_cache(struct vm_area_struct * vma,
+                              unsigned long address, pte_t pte);
+
+/*
+ * remap a physical page `pfn' of size `size' with page protection `prot'
+ * into virtual address `from'
+ */
+
+#define io_remap_pfn_range(vma,from,pfn,size,prot) \
+                remap_pfn_range(vma, from, pfn, size, prot)
+
+
+extern void pgtable_cache_init(void);
+
+typedef pte_t *pte_addr_t;
+
+#endif /* !defined (__ASSEMBLY__) */
+
+#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
+#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
+#define __HAVE_ARCH_PTEP_SET_WRPROTECT
+#define __HAVE_ARCH_PTEP_MKDIRTY
+#define __HAVE_ARCH_PTE_SAME
+
+#include <asm-generic/pgtable.h>
+
+#endif /* _XTENSA_PGTABLE_H */
diff --git a/arch/xtensa/include/asm/platform.h b/arch/xtensa/include/asm/platform.h
new file mode 100644
index 000000000000..e3d5a48ad495
--- /dev/null
+++ b/arch/xtensa/include/asm/platform.h
@@ -0,0 +1,89 @@
+/*
+ * Platform specific functions
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PLATFORM_H
+#define _XTENSA_PLATFORM_H
+
+#include <linux/types.h>
+#include <linux/pci.h>
+
+#include <asm/bootparam.h>
+
+/*
+ * platform_init is called before the mmu is initialized to give the
+ * platform a early hook-up. bp_tag_t is a list of configuration tags
+ * passed from the boot-loader.
+ */
+extern void platform_init(bp_tag_t*);
+
+/*
+ * platform_setup is called from setup_arch with a pointer to the command-line
+ * string.
+ */
+extern void platform_setup (char **);
+
+/*
+ * platform_init_irq is called from init_IRQ.
+ */
+extern void platform_init_irq (void);
+
+/*
+ * platform_restart is called to restart the system.
+ */
+extern void platform_restart (void);
+
+/*
+ * platform_halt is called to stop the system and halt.
+ */
+extern void platform_halt (void);
+
+/*
+ * platform_power_off is called to stop the system and power it off.
+ */
+extern void platform_power_off (void);
+
+/*
+ * platform_idle is called from the idle function.
+ */
+extern void platform_idle (void);
+
+/*
+ * platform_heartbeat is called every HZ
+ */
+extern void platform_heartbeat (void);
+
+/*
+ * platform_pcibios_init is called to allow the platform to setup the pci bus.
+ */
+extern void platform_pcibios_init (void);
+
+/*
+ * platform_pcibios_fixup allows to modify the PCI configuration.
+ */
+extern int platform_pcibios_fixup (void);
+
+/*
+ * platform_calibrate_ccount calibrates cpu clock freq (CONFIG_XTENSA_CALIBRATE)
+ */
+extern void platform_calibrate_ccount (void);
+
+/*
+ * platform_get_rtc_time returns RTC seconds (returns 0 for no error)
+ */
+extern int platform_get_rtc_time(time_t*);
+
+/*
+ * platform_set_rtc_time set RTC seconds (returns 0 for no error)
+ */
+extern int platform_set_rtc_time(time_t);
+
+
+#endif  /* _XTENSA_PLATFORM_H */
+
diff --git a/arch/xtensa/include/asm/poll.h b/arch/xtensa/include/asm/poll.h
new file mode 100644
index 000000000000..9d2d5993f068
--- /dev/null
+++ b/arch/xtensa/include/asm/poll.h
@@ -0,0 +1,20 @@
+/*
+ * include/asm-xtensa/poll.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_POLL_H
+#define _XTENSA_POLL_H
+
+#define POLLWRNORM      POLLOUT
+#define POLLWRBAND      0x0100
+#define POLLREMOVE      0x0800
+
+#include <asm-generic/poll.h>
+
+#endif /* _XTENSA_POLL_H */
diff --git a/arch/xtensa/include/asm/posix_types.h b/arch/xtensa/include/asm/posix_types.h
new file mode 100644
index 000000000000..43f9dd1126a4
--- /dev/null
+++ b/arch/xtensa/include/asm/posix_types.h
@@ -0,0 +1,122 @@
+/*
+ * include/asm-xtensa/posix_types.h
+ *
+ * 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.
+ *
+ * Largely copied from include/asm-ppc/posix_types.h
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_POSIX_TYPES_H
+#define _XTENSA_POSIX_TYPES_H
+
+/*
+ * This file is generally used by user-level software, so you need to
+ * be a little careful about namespace pollution etc.  Also, we cannot
+ * assume GCC is being used.
+ */
+
+typedef unsigned long   __kernel_ino_t;
+typedef unsigned int    __kernel_mode_t;
+typedef unsigned long   __kernel_nlink_t;
+typedef long            __kernel_off_t;
+typedef int             __kernel_pid_t;
+typedef unsigned short  __kernel_ipc_pid_t;
+typedef unsigned int    __kernel_uid_t;
+typedef unsigned int    __kernel_gid_t;
+typedef unsigned int    __kernel_size_t;
+typedef int             __kernel_ssize_t;
+typedef long            __kernel_ptrdiff_t;
+typedef long            __kernel_time_t;
+typedef long            __kernel_suseconds_t;
+typedef long            __kernel_clock_t;
+typedef int             __kernel_timer_t;
+typedef int             __kernel_clockid_t;
+typedef int             __kernel_daddr_t;
+typedef char *          __kernel_caddr_t;
+typedef unsigned short  __kernel_uid16_t;
+typedef unsigned short  __kernel_gid16_t;
+typedef unsigned int    __kernel_uid32_t;
+typedef unsigned int    __kernel_gid32_t;
+
+typedef unsigned short  __kernel_old_uid_t;
+typedef unsigned short  __kernel_old_gid_t;
+typedef unsigned short  __kernel_old_dev_t;
+
+#ifdef __GNUC__
+typedef long long       __kernel_loff_t;
+#endif
+
+typedef struct {
+        int     val[2];
+} __kernel_fsid_t;
+
+#ifndef __GNUC__
+
+#define __FD_SET(d, set)        ((set)->fds_bits[__FDELT(d)] |= __FDMASK(d))
+#define __FD_CLR(d, set)        ((set)->fds_bits[__FDELT(d)] &= ~__FDMASK(d))
+#define __FD_ISSET(d, set)      ((set)->fds_bits[__FDELT(d)] & __FDMASK(d))
+#define __FD_ZERO(set)  \
+  ((void) memset ((void *) (set), 0, sizeof (__kernel_fd_set)))
+
+#else /* __GNUC__ */
+
+#if defined(__KERNEL__)
+/* With GNU C, use inline functions instead so args are evaluated only once: */
+
+#undef __FD_SET
+static __inline__ void __FD_SET(unsigned long fd, __kernel_fd_set *fdsetp)
+{
+        unsigned long _tmp = fd / __NFDBITS;
+        unsigned long _rem = fd % __NFDBITS;
+        fdsetp->fds_bits[_tmp] |= (1UL<<_rem);
+}
+
+#undef __FD_CLR
+static __inline__ void __FD_CLR(unsigned long fd, __kernel_fd_set *fdsetp)
+{
+        unsigned long _tmp = fd / __NFDBITS;
+        unsigned long _rem = fd % __NFDBITS;
+        fdsetp->fds_bits[_tmp] &= ~(1UL<<_rem);
+}
+
+#undef __FD_ISSET
+static __inline__ int __FD_ISSET(unsigned long fd, __kernel_fd_set *p)
+{
+        unsigned long _tmp = fd / __NFDBITS;
+        unsigned long _rem = fd % __NFDBITS;
+        return (p->fds_bits[_tmp] & (1UL<<_rem)) != 0;
+}
+
+/*
+ * This will unroll the loop for the normal constant case (8 ints,
+ * for a 256-bit fd_set)
+ */
+#undef __FD_ZERO
+static __inline__ void __FD_ZERO(__kernel_fd_set *p)
+{
+        unsigned int *tmp = (unsigned int *)p->fds_bits;
+        int i;
+
+        if (__builtin_constant_p(__FDSET_LONGS)) {
+                switch (__FDSET_LONGS) {
+                        case 8:
+                                tmp[0] = 0; tmp[1] = 0; tmp[2] = 0; tmp[3] = 0;
+                                tmp[4] = 0; tmp[5] = 0; tmp[6] = 0; tmp[7] = 0;
+                                return;
+                }
+        }
+        i = __FDSET_LONGS;
+        while (i) {
+                i--;
+                *tmp = 0;
+                tmp++;
+        }
+}
+
+#endif /* defined(__KERNEL__) */
+#endif /* __GNUC__ */
+#endif /* _XTENSA_POSIX_TYPES_H */
diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h
new file mode 100644
index 000000000000..07387d3b99f4
--- /dev/null
+++ b/arch/xtensa/include/asm/processor.h
@@ -0,0 +1,193 @@
+/*
+ * include/asm-xtensa/processor.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PROCESSOR_H
+#define _XTENSA_PROCESSOR_H
+
+#include <variant/core.h>
+#include <asm/coprocessor.h>
+
+#include <linux/compiler.h>
+#include <asm/ptrace.h>
+#include <asm/types.h>
+#include <asm/regs.h>
+
+/* Assertions. */
+
+#if (XCHAL_HAVE_WINDOWED != 1)
+# error Linux requires the Xtensa Windowed Registers Option.
+#endif
+
+/*
+ * User space process size: 1 GB.
+ * Windowed call ABI requires caller and callee to be located within the same
+ * 1 GB region. The C compiler places trampoline code on the stack for sources
+ * that take the address of a nested C function (a feature used by glibc), so
+ * the 1 GB requirement applies to the stack as well.
+ */
+
+#define TASK_SIZE       __XTENSA_UL_CONST(0x40000000)
+#define STACK_TOP       TASK_SIZE
+#define STACK_TOP_MAX   STACK_TOP
+
+/*
+ * General exception cause assigned to debug exceptions. Debug exceptions go
+ * to their own vector, rather than the general exception vectors (user,
+ * kernel, double); and their specific causes are reported via DEBUGCAUSE
+ * rather than EXCCAUSE.  However it is sometimes convenient to redirect debug
+ * exceptions to the general exception mechanism.  To do this, an otherwise
+ * unused EXCCAUSE value was assigned to debug exceptions for this purpose.
+ */
+
+#define EXCCAUSE_MAPPED_DEBUG   63
+
+/*
+ * We use DEPC also as a flag to distinguish between double and regular
+ * exceptions. For performance reasons, DEPC might contain the value of
+ * EXCCAUSE for regular exceptions, so we use this definition to mark a
+ * valid double exception address.
+ * (Note: We use it in bgeui, so it should be 64, 128, or 256)
+ */
+
+#define VALID_DOUBLE_EXCEPTION_ADDRESS  64
+
+/* LOCKLEVEL defines the interrupt level that masks all
+ * general-purpose interrupts.
+ */
+#define LOCKLEVEL 1
+
+/* WSBITS and WBBITS are the width of the WINDOWSTART and WINDOWBASE
+ * registers
+ */
+#define WSBITS  (XCHAL_NUM_AREGS / 4)      /* width of WINDOWSTART in bits */
+#define WBBITS  (XCHAL_NUM_AREGS_LOG2 - 2) /* width of WINDOWBASE in bits */
+
+#ifndef __ASSEMBLY__
+
+/* Build a valid return address for the specified call winsize.
+ * winsize must be 1 (call4), 2 (call8), or 3 (call12)
+ */
+#define MAKE_RA_FOR_CALL(ra,ws)   (((ra) & 0x3fffffff) | (ws) << 30)
+
+/* Convert return address to a valid pc
+ * Note: We assume that the stack pointer is in the same 1GB ranges as the ra
+ */
+#define MAKE_PC_FROM_RA(ra,sp)    (((ra) & 0x3fffffff) | ((sp) & 0xc0000000))
+
+typedef struct {
+    unsigned long seg;
+} mm_segment_t;
+
+struct thread_struct {
+
+        /* kernel's return address and stack pointer for context switching */
+        unsigned long ra; /* kernel's a0: return address and window call size */
+        unsigned long sp; /* kernel's a1: stack pointer */
+
+        mm_segment_t current_ds;    /* see uaccess.h for example uses */
+
+        /* struct xtensa_cpuinfo info; */
+
+        unsigned long bad_vaddr; /* last user fault */
+        unsigned long bad_uaddr; /* last kernel fault accessing user space */
+        unsigned long error_code;
+
+        unsigned long ibreak[XCHAL_NUM_IBREAK];
+        unsigned long dbreaka[XCHAL_NUM_DBREAK];
+        unsigned long dbreakc[XCHAL_NUM_DBREAK];
+
+        /* Make structure 16 bytes aligned. */
+        int align[0] __attribute__ ((aligned(16)));
+};
+
+
+/*
+ * Default implementation of macro that returns current
+ * instruction pointer ("program counter").
+ */
+#define current_text_addr()  ({ __label__ _l; _l: &&_l;})
+
+
+/* This decides where the kernel will search for a free chunk of vm
+ * space during mmap's.
+ */
+#define TASK_UNMAPPED_BASE      (TASK_SIZE / 2)
+
+#define INIT_THREAD  \
+{                                                                       \
+        ra:             0,                                              \
+        sp:             sizeof(init_stack) + (long) &init_stack,        \
+        current_ds:     {0},                                            \
+        /*info:         {0}, */                                         \
+        bad_vaddr:      0,                                              \
+        bad_uaddr:      0,                                              \
+        error_code:     0,                                              \
+}
+
+
+/*
+ * Do necessary setup to start up a newly executed thread.
+ * Note: We set-up ps as if we did a call4 to the new pc.
+ *       set_thread_state in signal.c depends on it.
+ */
+#define USER_PS_VALUE ((1 << PS_WOE_BIT) |                              \
+                       (1 << PS_CALLINC_SHIFT) |                        \
+                       (USER_RING << PS_RING_SHIFT) |                   \
+                       (1 << PS_UM_BIT) |                               \
+                       (1 << PS_EXCM_BIT))
+
+/* Clearing a0 terminates the backtrace. */
+#define start_thread(regs, new_pc, new_sp) \
+        regs->pc = new_pc; \
+        regs->ps = USER_PS_VALUE; \
+        regs->areg[1] = new_sp; \
+        regs->areg[0] = 0; \
+        regs->wmask = 1; \
+        regs->depc = 0; \
+        regs->windowbase = 0; \
+        regs->windowstart = 1;
+
+/* Forward declaration */
+struct task_struct;
+struct mm_struct;
+
+/* Free all resources held by a thread. */
+#define release_thread(thread) do { } while(0)
+
+/* Prepare to copy thread state - unlazy all lazy status */
+extern void prepare_to_copy(struct task_struct*);
+
+/* Create a kernel thread without removing it from tasklists */
+extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
+
+/* Copy and release all segment info associated with a VM */
+#define copy_segments(p, mm)    do { } while(0)
+#define release_segments(mm)    do { } while(0)
+#define forget_segments()       do { } while (0)
+
+#define thread_saved_pc(tsk)    (task_pt_regs(tsk)->pc)
+
+extern unsigned long get_wchan(struct task_struct *p);
+
+#define KSTK_EIP(tsk)           (task_pt_regs(tsk)->pc)
+#define KSTK_ESP(tsk)           (task_pt_regs(tsk)->areg[1])
+
+#define cpu_relax()  barrier()
+
+/* Special register access. */
+
+#define WSR(v,sr) __asm__ __volatile__ ("wsr %0,"__stringify(sr) :: "a"(v));
+#define RSR(v,sr) __asm__ __volatile__ ("rsr %0,"__stringify(sr) : "=a"(v));
+
+#define set_sr(x,sr) ({unsigned int v=(unsigned int)x; WSR(v,sr);})
+#define get_sr(sr) ({unsigned int v; RSR(v,sr); v; })
+
+#endif  /* __ASSEMBLY__ */
+#endif  /* _XTENSA_PROCESSOR_H */
diff --git a/arch/xtensa/include/asm/ptrace.h b/arch/xtensa/include/asm/ptrace.h
new file mode 100644
index 000000000000..905e1e619654
--- /dev/null
+++ b/arch/xtensa/include/asm/ptrace.h
@@ -0,0 +1,135 @@
+/*
+ * include/asm-xtensa/ptrace.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PTRACE_H
+#define _XTENSA_PTRACE_H
+
+/*
+ * Kernel stack
+ *
+ *              +-----------------------+  -------- STACK_SIZE
+ *              |     register file     |  |
+ *              +-----------------------+  |
+ *              |    struct pt_regs     |  |
+ *              +-----------------------+  | ------ PT_REGS_OFFSET
+ * double       :  16 bytes spill area  :  |  ^
+ * excetion     :- - - - - - - - - - - -:  |  |
+ * frame        :    struct pt_regs     :  |  |
+ *              :- - - - - - - - - - - -:  |  |
+ *              |                       |  |  |
+ *              |     memory stack      |  |  |
+ *              |                       |  |  |
+ *              ~                       ~  ~  ~
+ *              ~                       ~  ~  ~
+ *              |                       |  |  |
+ *              |                       |  |  |
+ *              +-----------------------+  |  | --- STACK_BIAS
+ *              |  struct task_struct   |  |  |  ^
+ *  current --> +-----------------------+  |  |  |
+ *              |  struct thread_info   |  |  |  |
+ *              +-----------------------+ --------
+ */
+
+#define KERNEL_STACK_SIZE (2 * PAGE_SIZE)
+
+/*  Offsets for exception_handlers[] (3 x 64-entries x 4-byte tables). */
+
+#define EXC_TABLE_KSTK          0x004   /* Kernel Stack */
+#define EXC_TABLE_DOUBLE_SAVE   0x008   /* Double exception save area for a0 */
+#define EXC_TABLE_FIXUP         0x00c   /* Fixup handler */
+#define EXC_TABLE_PARAM         0x010   /* For passing a parameter to fixup */
+#define EXC_TABLE_SYSCALL_SAVE  0x014   /* For fast syscall handler */
+#define EXC_TABLE_FAST_USER     0x100   /* Fast user exception handler */
+#define EXC_TABLE_FAST_KERNEL   0x200   /* Fast kernel exception handler */
+#define EXC_TABLE_DEFAULT       0x300   /* Default C-Handler */
+#define EXC_TABLE_SIZE          0x400
+
+/* Registers used by strace */
+
+#define REG_A_BASE      0x0000
+#define REG_AR_BASE     0x0100
+#define REG_PC          0x0020
+#define REG_PS          0x02e6
+#define REG_WB          0x0248
+#define REG_WS          0x0249
+#define REG_LBEG        0x0200
+#define REG_LEND        0x0201
+#define REG_LCOUNT      0x0202
+#define REG_SAR         0x0203
+
+#define SYSCALL_NR      0x00ff
+
+/* Other PTRACE_ values defined in <linux/ptrace.h> using values 0-9,16,17,24 */
+
+#define PTRACE_GETREGS          12
+#define PTRACE_SETREGS          13
+#define PTRACE_GETXTREGS        18
+#define PTRACE_SETXTREGS        19
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+
+/*
+ * This struct defines the way the registers are stored on the
+ * kernel stack during a system call or other kernel entry.
+ */
+struct pt_regs {
+        unsigned long pc;               /*   4 */
+        unsigned long ps;               /*   8 */
+        unsigned long depc;             /*  12 */
+        unsigned long exccause;         /*  16 */
+        unsigned long excvaddr;         /*  20 */
+        unsigned long debugcause;       /*  24 */
+        unsigned long wmask;            /*  28 */
+        unsigned long lbeg;             /*  32 */
+        unsigned long lend;             /*  36 */
+        unsigned long lcount;           /*  40 */
+        unsigned long sar;              /*  44 */
+        unsigned long windowbase;       /*  48 */
+        unsigned long windowstart;      /*  52 */
+        unsigned long syscall;          /*  56 */
+        unsigned long icountlevel;      /*  60 */
+        int reserved[1];                /*  64 */
+
+        /* Additional configurable registers that are used by the compiler. */
+        xtregs_opt_t xtregs_opt;
+
+        /* Make sure the areg field is 16 bytes aligned. */
+        int align[0] __attribute__ ((aligned(16)));
+
+        /* current register frame.
+         * Note: The ESF for kernel exceptions ends after 16 registers!
+         */
+        unsigned long areg[16];         /* 128 (64) */
+};
+
+#include <variant/core.h>
+
+# define task_pt_regs(tsk) ((struct pt_regs*) \
+  (task_stack_page(tsk) + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4) - 1)
+# define user_mode(regs) (((regs)->ps & 0x00000020)!=0)
+# define instruction_pointer(regs) ((regs)->pc)
+extern void show_regs(struct pt_regs *);
+
+# ifndef CONFIG_SMP
+#  define profile_pc(regs) instruction_pointer(regs)
+# endif
+
+#else   /* __ASSEMBLY__ */
+
+# include <asm/asm-offsets.h>
+#define PT_REGS_OFFSET    (KERNEL_STACK_SIZE - PT_USER_SIZE)
+
+#endif  /* !__ASSEMBLY__ */
+
+#endif  /* __KERNEL__ */
+
+#endif  /* _XTENSA_PTRACE_H */
diff --git a/arch/xtensa/include/asm/regs.h b/arch/xtensa/include/asm/regs.h
new file mode 100644
index 000000000000..d4baed246928
--- /dev/null
+++ b/arch/xtensa/include/asm/regs.h
@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2006 Tensilica, Inc.  All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2.1 of the GNU Lesser General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * Further, this software is distributed without any warranty that it is
+ * free of the rightful claim of any third person regarding infringement
+ * or the like.  Any license provided herein, whether implied or
+ * otherwise, applies only to this software file.  Patent licenses, if
+ * any, provided herein do not apply to combinations of this program with
+ * other software, or any other product whatsoever.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, write the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307,
+ * USA.
+ */
+
+#ifndef _XTENSA_REGS_H
+#define _XTENSA_REGS_H
+
+/*  Special registers.  */
+
+#define LBEG            0
+#define LEND            1
+#define LCOUNT          2
+#define SAR             3
+#define BR              4
+#define SCOMPARE1       12
+#define ACCHI           16
+#define ACCLO           17
+#define MR              32
+#define WINDOWBASE      72
+#define WINDOWSTART     73
+#define PTEVADDR        83
+#define RASID           90
+#define ITLBCFG         91
+#define DTLBCFG         92
+#define IBREAKENABLE    96
+#define DDR             104
+#define IBREAKA         128
+#define DBREAKA         144
+#define DBREAKC         160
+#define EPC             176
+#define EPC_1           177
+#define DEPC            192
+#define EPS             192
+#define EPS_1           193
+#define EXCSAVE         208
+#define EXCSAVE_1       209
+#define INTERRUPT       226
+#define INTENABLE       228
+#define PS              230
+#define THREADPTR       231
+#define EXCCAUSE        232
+#define DEBUGCAUSE      233
+#define CCOUNT          234
+#define PRID            235
+#define ICOUNT          236
+#define ICOUNTLEVEL     237
+#define EXCVADDR        238
+#define CCOMPARE        240
+#define MISC            244
+
+/*  Special names for read-only and write-only interrupt registers.  */
+
+#define INTREAD         226
+#define INTSET          226
+#define INTCLEAR        227
+
+/*  EXCCAUSE register fields  */
+
+#define EXCCAUSE_EXCCAUSE_SHIFT 0
+#define EXCCAUSE_EXCCAUSE_MASK  0x3F
+
+#define EXCCAUSE_ILLEGAL_INSTRUCTION            0
+#define EXCCAUSE_SYSTEM_CALL                    1
+#define EXCCAUSE_INSTRUCTION_FETCH_ERROR        2
+#define EXCCAUSE_LOAD_STORE_ERROR               3
+#define EXCCAUSE_LEVEL1_INTERRUPT               4
+#define EXCCAUSE_ALLOCA                         5
+#define EXCCAUSE_INTEGER_DIVIDE_BY_ZERO         6
+#define EXCCAUSE_SPECULATION                    7
+#define EXCCAUSE_PRIVILEGED                     8
+#define EXCCAUSE_UNALIGNED                      9
+#define EXCCAUSE_ITLB_MISS                      16
+#define EXCCAUSE_ITLB_MULTIHIT                  17
+#define EXCCAUSE_ITLB_PRIVILEGE                 18
+#define EXCCAUSE_ITLB_SIZE_RESTRICTION          19
+#define EXCCAUSE_FETCH_CACHE_ATTRIBUTE          20
+#define EXCCAUSE_DTLB_MISS                      24
+#define EXCCAUSE_DTLB_MULTIHIT                  25
+#define EXCCAUSE_DTLB_PRIVILEGE                 26
+#define EXCCAUSE_DTLB_SIZE_RESTRICTION          27
+#define EXCCAUSE_LOAD_CACHE_ATTRIBUTE           28
+#define EXCCAUSE_STORE_CACHE_ATTRIBUTE          29
+#define EXCCAUSE_COPROCESSOR0_DISABLED          32
+#define EXCCAUSE_COPROCESSOR1_DISABLED          33
+#define EXCCAUSE_COPROCESSOR2_DISABLED          34
+#define EXCCAUSE_COPROCESSOR3_DISABLED          35
+#define EXCCAUSE_COPROCESSOR4_DISABLED          36
+#define EXCCAUSE_COPROCESSOR5_DISABLED          37
+#define EXCCAUSE_COPROCESSOR6_DISABLED          38
+#define EXCCAUSE_COPROCESSOR7_DISABLED          39
+
+/*  PS register fields.  */
+
+#define PS_WOE_BIT              18
+#define PS_CALLINC_SHIFT        16
+#define PS_CALLINC_MASK         0x00030000
+#define PS_OWB_SHIFT            8
+#define PS_OWB_MASK             0x00000F00
+#define PS_RING_SHIFT           6
+#define PS_RING_MASK            0x000000C0
+#define PS_UM_BIT               5
+#define PS_EXCM_BIT             4
+#define PS_INTLEVEL_SHIFT       0
+#define PS_INTLEVEL_MASK        0x0000000F
+
+/*  DBREAKCn register fields.  */
+
+#define DBREAKC_MASK_BIT                0
+#define DBREAKC_MASK_MASK               0x0000003F
+#define DBREAKC_LOAD_BIT                30
+#define DBREAKC_LOAD_MASK               0x40000000
+#define DBREAKC_STOR_BIT                31
+#define DBREAKC_STOR_MASK               0x80000000
+
+/*  DEBUGCAUSE register fields.  */
+
+#define DEBUGCAUSE_DEBUGINT_BIT         5       /* External debug interrupt */
+#define DEBUGCAUSE_BREAKN_BIT           4       /* BREAK.N instruction */
+#define DEBUGCAUSE_BREAK_BIT            3       /* BREAK instruction */
+#define DEBUGCAUSE_DBREAK_BIT           2       /* DBREAK match */
+#define DEBUGCAUSE_IBREAK_BIT           1       /* IBREAK match */
+#define DEBUGCAUSE_ICOUNT_BIT           0       /* ICOUNT would incr. to zero */
+
+#endif /* _XTENSA_SPECREG_H */
+
diff --git a/arch/xtensa/include/asm/resource.h b/arch/xtensa/include/asm/resource.h
new file mode 100644
index 000000000000..17b5ab311771
--- /dev/null
+++ b/arch/xtensa/include/asm/resource.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/resource.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_RESOURCE_H
+#define _XTENSA_RESOURCE_H
+
+#include <asm-generic/resource.h>
+
+#endif  /* _XTENSA_RESOURCE_H */
diff --git a/arch/xtensa/include/asm/rmap.h b/arch/xtensa/include/asm/rmap.h
new file mode 100644
index 000000000000..649588b7e9ad
--- /dev/null
+++ b/arch/xtensa/include/asm/rmap.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/rmap.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_RMAP_H
+#define _XTENSA_RMAP_H
+
+#include <asm-generic/rmap.h>
+
+#endif
diff --git a/arch/xtensa/include/asm/rwsem.h b/arch/xtensa/include/asm/rwsem.h
new file mode 100644
index 000000000000..e39edf5c86f2
--- /dev/null
+++ b/arch/xtensa/include/asm/rwsem.h
@@ -0,0 +1,168 @@
+/*
+ * include/asm-xtensa/rwsem.h
+ *
+ * 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.
+ *
+ * Largely copied from include/asm-ppc/rwsem.h
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_RWSEM_H
+#define _XTENSA_RWSEM_H
+
+#ifndef _LINUX_RWSEM_H
+#error "Please don't include <asm/rwsem.h> directly, use <linux/rwsem.h> instead."
+#endif
+
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <asm/atomic.h>
+#include <asm/system.h>
+
+/*
+ * the semaphore definition
+ */
+struct rw_semaphore {
+        signed long             count;
+#define RWSEM_UNLOCKED_VALUE            0x00000000
+#define RWSEM_ACTIVE_BIAS               0x00000001
+#define RWSEM_ACTIVE_MASK               0x0000ffff
+#define RWSEM_WAITING_BIAS              (-0x00010000)
+#define RWSEM_ACTIVE_READ_BIAS          RWSEM_ACTIVE_BIAS
+#define RWSEM_ACTIVE_WRITE_BIAS         (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
+        spinlock_t              wait_lock;
+        struct list_head        wait_list;
+};
+
+#define __RWSEM_INITIALIZER(name) \
+        { RWSEM_UNLOCKED_VALUE, SPIN_LOCK_UNLOCKED, \
+          LIST_HEAD_INIT((name).wait_list) }
+
+#define DECLARE_RWSEM(name)             \
+        struct rw_semaphore name = __RWSEM_INITIALIZER(name)
+
+extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
+extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
+extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem);
+extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
+
+static inline void init_rwsem(struct rw_semaphore *sem)
+{
+        sem->count = RWSEM_UNLOCKED_VALUE;
+        spin_lock_init(&sem->wait_lock);
+        INIT_LIST_HEAD(&sem->wait_list);
+}
+
+/*
+ * lock for reading
+ */
+static inline void __down_read(struct rw_semaphore *sem)
+{
+        if (atomic_add_return(1,(atomic_t *)(&sem->count)) > 0)
+                smp_wmb();
+        else
+                rwsem_down_read_failed(sem);
+}
+
+static inline int __down_read_trylock(struct rw_semaphore *sem)
+{
+        int tmp;
+
+        while ((tmp = sem->count) >= 0) {
+                if (tmp == cmpxchg(&sem->count, tmp,
+                                   tmp + RWSEM_ACTIVE_READ_BIAS)) {
+                        smp_wmb();
+                        return 1;
+                }
+        }
+        return 0;
+}
+
+/*
+ * lock for writing
+ */
+static inline void __down_write(struct rw_semaphore *sem)
+{
+        int tmp;
+
+        tmp = atomic_add_return(RWSEM_ACTIVE_WRITE_BIAS,
+                                (atomic_t *)(&sem->count));
+        if (tmp == RWSEM_ACTIVE_WRITE_BIAS)
+                smp_wmb();
+        else
+                rwsem_down_write_failed(sem);
+}
+
+static inline int __down_write_trylock(struct rw_semaphore *sem)
+{
+        int tmp;
+
+        tmp = cmpxchg(&sem->count, RWSEM_UNLOCKED_VALUE,
+                      RWSEM_ACTIVE_WRITE_BIAS);
+        smp_wmb();
+        return tmp == RWSEM_UNLOCKED_VALUE;
+}
+
+/*
+ * unlock after reading
+ */
+static inline void __up_read(struct rw_semaphore *sem)
+{
+        int tmp;
+
+        smp_wmb();
+        tmp = atomic_sub_return(1,(atomic_t *)(&sem->count));
+        if (tmp < -1 && (tmp & RWSEM_ACTIVE_MASK) == 0)
+                rwsem_wake(sem);
+}
+
+/*
+ * unlock after writing
+ */
+static inline void __up_write(struct rw_semaphore *sem)
+{
+        smp_wmb();
+        if (atomic_sub_return(RWSEM_ACTIVE_WRITE_BIAS,
+                              (atomic_t *)(&sem->count)) < 0)
+                rwsem_wake(sem);
+}
+
+/*
+ * implement atomic add functionality
+ */
+static inline void rwsem_atomic_add(int delta, struct rw_semaphore *sem)
+{
+        atomic_add(delta, (atomic_t *)(&sem->count));
+}
+
+/*
+ * downgrade write lock to read lock
+ */
+static inline void __downgrade_write(struct rw_semaphore *sem)
+{
+        int tmp;
+
+        smp_wmb();
+        tmp = atomic_add_return(-RWSEM_WAITING_BIAS, (atomic_t *)(&sem->count));
+        if (tmp < 0)
+                rwsem_downgrade_wake(sem);
+}
+
+/*
+ * implement exchange and add functionality
+ */
+static inline int rwsem_atomic_update(int delta, struct rw_semaphore *sem)
+{
+        smp_mb();
+        return atomic_add_return(delta, (atomic_t *)(&sem->count));
+}
+
+static inline int rwsem_is_locked(struct rw_semaphore *sem)
+{
+        return (sem->count != 0);
+}
+
+#endif  /* _XTENSA_RWSEM_H */
diff --git a/arch/xtensa/include/asm/scatterlist.h b/arch/xtensa/include/asm/scatterlist.h
new file mode 100644
index 000000000000..810080bb0a2b
--- /dev/null
+++ b/arch/xtensa/include/asm/scatterlist.h
@@ -0,0 +1,39 @@
+/*
+ * include/asm-xtensa/scatterlist.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SCATTERLIST_H
+#define _XTENSA_SCATTERLIST_H
+
+#include <asm/types.h>
+
+struct scatterlist {
+#ifdef CONFIG_DEBUG_SG
+        unsigned long   sg_magic;
+#endif
+        unsigned long   page_link;
+        unsigned int    offset;
+        dma_addr_t      dma_address;
+        unsigned int    length;
+};
+
+/*
+ * These macros should be used after a pci_map_sg call has been done
+ * to get bus addresses of each of the SG entries and their lengths.
+ * You should only work with the number of sg entries pci_map_sg
+ * returns, or alternatively stop on the first sg_dma_len(sg) which
+ * is 0.
+ */
+#define sg_dma_address(sg)      ((sg)->dma_address)
+#define sg_dma_len(sg)          ((sg)->length)
+
+
+#define ISA_DMA_THRESHOLD (~0UL)
+
+#endif  /* _XTENSA_SCATTERLIST_H */
diff --git a/arch/xtensa/include/asm/sections.h b/arch/xtensa/include/asm/sections.h
new file mode 100644
index 000000000000..40b5191b55a2
--- /dev/null
+++ b/arch/xtensa/include/asm/sections.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/sections.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SECTIONS_H
+#define _XTENSA_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+#endif  /* _XTENSA_SECTIONS_H */
diff --git a/arch/xtensa/include/asm/segment.h b/arch/xtensa/include/asm/segment.h
new file mode 100644
index 000000000000..a2eb547a1a75
--- /dev/null
+++ b/arch/xtensa/include/asm/segment.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/segment.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SEGMENT_H
+#define _XTENSA_SEGMENT_H
+
+#include <asm/uaccess.h>
+
+#endif  /* _XTENSA_SEGEMENT_H */
diff --git a/arch/xtensa/include/asm/sembuf.h b/arch/xtensa/include/asm/sembuf.h
new file mode 100644
index 000000000000..c15870493b33
--- /dev/null
+++ b/arch/xtensa/include/asm/sembuf.h
@@ -0,0 +1,44 @@
+/*
+ * include/asm-xtensa/sembuf.h
+ *
+ * The semid64_ds structure for Xtensa 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ *
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space.
+ *
+ * Pad space is left for:
+ * - 64-bit time_t to solve y2038 problem
+ * - 2 miscellaneous 32-bit values
+ *
+ */
+
+#ifndef _XTENSA_SEMBUF_H
+#define _XTENSA_SEMBUF_H
+
+#include <asm/byteorder.h>
+
+struct semid64_ds {
+        struct ipc64_perm sem_perm;             /* permissions .. see ipc.h */
+#ifdef __XTENSA_EL__
+        __kernel_time_t sem_otime;              /* last semop time */
+        unsigned long   __unused1;
+        __kernel_time_t sem_ctime;              /* last change time */
+        unsigned long   __unused2;
+#else
+        unsigned long   __unused1;
+        __kernel_time_t sem_otime;              /* last semop time */
+        unsigned long   __unused2;
+        __kernel_time_t sem_ctime;              /* last change time */
+#endif
+        unsigned long   sem_nsems;              /* no. of semaphores in array */
+        unsigned long   __unused3;
+        unsigned long   __unused4;
+};
+
+#endif /* __ASM_XTENSA_SEMBUF_H */
diff --git a/arch/xtensa/include/asm/serial.h b/arch/xtensa/include/asm/serial.h
new file mode 100644
index 000000000000..a8a2493260f6
--- /dev/null
+++ b/arch/xtensa/include/asm/serial.h
@@ -0,0 +1,18 @@
+/*
+ * include/asm-xtensa/serial.h
+ *
+ * Configuration details for 8250, 16450, 16550, etc. serial ports
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SERIAL_H
+#define _XTENSA_SERIAL_H
+
+#include <platform/serial.h>
+
+#endif  /* _XTENSA_SERIAL_H */
diff --git a/arch/xtensa/include/asm/setup.h b/arch/xtensa/include/asm/setup.h
new file mode 100644
index 000000000000..e3636520d8cc
--- /dev/null
+++ b/arch/xtensa/include/asm/setup.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/setup.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SETUP_H
+#define _XTENSA_SETUP_H
+
+#define COMMAND_LINE_SIZE       256
+
+#endif
diff --git a/arch/xtensa/include/asm/shmbuf.h b/arch/xtensa/include/asm/shmbuf.h
new file mode 100644
index 000000000000..ad4b0121782c
--- /dev/null
+++ b/arch/xtensa/include/asm/shmbuf.h
@@ -0,0 +1,71 @@
+/*
+ * include/asm-xtensa/shmbuf.h
+ *
+ * The shmid64_ds structure for Xtensa architecture.
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space.
+ *
+ * Pad space is left for:
+ * - 64-bit time_t to solve y2038 problem
+ * - 2 miscellaneous 32-bit values
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SHMBUF_H
+#define _XTENSA_SHMBUF_H
+
+#if defined (__XTENSA_EL__)
+struct shmid64_ds {
+        struct ipc64_perm       shm_perm;       /* operation perms */
+        size_t                  shm_segsz;      /* size of segment (bytes) */
+        __kernel_time_t         shm_atime;      /* last attach time */
+        unsigned long           __unused1;
+        __kernel_time_t         shm_dtime;      /* last detach time */
+        unsigned long           __unused2;
+        __kernel_time_t         shm_ctime;      /* last change time */
+        unsigned long           __unused3;
+        __kernel_pid_t          shm_cpid;       /* pid of creator */
+        __kernel_pid_t          shm_lpid;       /* pid of last operator */
+        unsigned long           shm_nattch;     /* no. of current attaches */
+        unsigned long           __unused4;
+        unsigned long           __unused5;
+};
+#elif defined (__XTENSA_EB__)
+struct shmid64_ds {
+        struct ipc64_perm       shm_perm;       /* operation perms */
+        size_t                  shm_segsz;      /* size of segment (bytes) */
+        __kernel_time_t         shm_atime;      /* last attach time */
+        unsigned long           __unused1;
+        __kernel_time_t         shm_dtime;      /* last detach time */
+        unsigned long           __unused2;
+        __kernel_time_t         shm_ctime;      /* last change time */
+        unsigned long           __unused3;
+        __kernel_pid_t          shm_cpid;       /* pid of creator */
+        __kernel_pid_t          shm_lpid;       /* pid of last operator */
+        unsigned long           shm_nattch;     /* no. of current attaches */
+        unsigned long           __unused4;
+        unsigned long           __unused5;
+};
+#else
+# error endian order not defined
+#endif
+
+
+struct shminfo64 {
+        unsigned long   shmmax;
+        unsigned long   shmmin;
+        unsigned long   shmmni;
+        unsigned long   shmseg;
+        unsigned long   shmall;
+        unsigned long   __unused1;
+        unsigned long   __unused2;
+        unsigned long   __unused3;
+        unsigned long   __unused4;
+};
+
+#endif  /* _XTENSA_SHMBUF_H */
diff --git a/arch/xtensa/include/asm/shmparam.h b/arch/xtensa/include/asm/shmparam.h
new file mode 100644
index 000000000000..c8cc16c3da9e
--- /dev/null
+++ b/arch/xtensa/include/asm/shmparam.h
@@ -0,0 +1,21 @@
+/*
+ * include/asm-xtensa/shmparam.h
+ *
+ * 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.
+ */
+
+#ifndef _XTENSA_SHMPARAM_H
+#define _XTENSA_SHMPARAM_H
+
+/*
+ * Xtensa can have variable size caches, and if
+ * the size of single way is larger than the page size,
+ * then we have to start worrying about cache aliasing
+ * problems.
+ */
+
+#define SHMLBA  ((PAGE_SIZE > DCACHE_WAY_SIZE)? PAGE_SIZE : DCACHE_WAY_SIZE)
+
+#endif /* _XTENSA_SHMPARAM_H */
diff --git a/arch/xtensa/include/asm/sigcontext.h b/arch/xtensa/include/asm/sigcontext.h
new file mode 100644
index 000000000000..03383af8c3b7
--- /dev/null
+++ b/arch/xtensa/include/asm/sigcontext.h
@@ -0,0 +1,28 @@
+/*
+ * include/asm-xtensa/sigcontext.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SIGCONTEXT_H
+#define _XTENSA_SIGCONTEXT_H
+
+
+struct sigcontext {
+        unsigned long sc_pc;
+        unsigned long sc_ps;
+        unsigned long sc_lbeg;
+        unsigned long sc_lend;
+        unsigned long sc_lcount;
+        unsigned long sc_sar;
+        unsigned long sc_acclo;
+        unsigned long sc_acchi;
+        unsigned long sc_a[16];
+        void *sc_xtregs;
+};
+
+#endif /* _XTENSA_SIGCONTEXT_H */
diff --git a/arch/xtensa/include/asm/siginfo.h b/arch/xtensa/include/asm/siginfo.h
new file mode 100644
index 000000000000..6916248295df
--- /dev/null
+++ b/arch/xtensa/include/asm/siginfo.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/siginfo.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SIGINFO_H
+#define _XTENSA_SIGINFO_H
+
+#include <asm-generic/siginfo.h>
+
+#endif  /* _XTENSA_SIGINFO_H */
diff --git a/arch/xtensa/include/asm/signal.h b/arch/xtensa/include/asm/signal.h
new file mode 100644
index 000000000000..633ba73bc4d2
--- /dev/null
+++ b/arch/xtensa/include/asm/signal.h
@@ -0,0 +1,172 @@
+/*
+ * include/asm-xtensa/signal.h
+ *
+ * Swiped from SH.
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SIGNAL_H
+#define _XTENSA_SIGNAL_H
+
+
+#define _NSIG           64
+#define _NSIG_BPW       32
+#define _NSIG_WORDS     (_NSIG / _NSIG_BPW)
+
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+
+/* Avoid too many header ordering problems.  */
+struct siginfo;
+typedef unsigned long old_sigset_t;             /* at least 32 bits */
+typedef struct {
+        unsigned long sig[_NSIG_WORDS];
+} sigset_t;
+
+#endif
+
+#define SIGHUP           1
+#define SIGINT           2
+#define SIGQUIT          3
+#define SIGILL           4
+#define SIGTRAP          5
+#define SIGABRT          6
+#define SIGIOT           6
+#define SIGBUS           7
+#define SIGFPE           8
+#define SIGKILL          9
+#define SIGUSR1         10
+#define SIGSEGV         11
+#define SIGUSR2         12
+#define SIGPIPE         13
+#define SIGALRM         14
+#define SIGTERM         15
+#define SIGSTKFLT       16
+#define SIGCHLD         17
+#define SIGCONT         18
+#define SIGSTOP         19
+#define SIGTSTP         20
+#define SIGTTIN         21
+#define SIGTTOU         22
+#define SIGURG          23
+#define SIGXCPU         24
+#define SIGXFSZ         25
+#define SIGVTALRM       26
+#define SIGPROF         27
+#define SIGWINCH        28
+#define SIGIO           29
+#define SIGPOLL         SIGIO
+/* #define SIGLOST              29 */
+#define SIGPWR          30
+#define SIGSYS          31
+#define SIGUNUSED       31
+
+/* These should not be considered constants from userland.  */
+#define SIGRTMIN        32
+#define SIGRTMAX        (_NSIG-1)
+
+/*
+ * SA_FLAGS values:
+ *
+ * SA_ONSTACK indicates that a registered stack_t will be used.
+ * SA_RESTART flag to get restarting signals (which were the default long ago)
+ * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
+ * SA_RESETHAND clears the handler when the signal is delivered.
+ * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
+ * SA_NODEFER prevents the current signal from being masked in the handler.
+ *
+ * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
+ * Unix names RESETHAND and NODEFER respectively.
+ */
+#define SA_NOCLDSTOP    0x00000001
+#define SA_NOCLDWAIT    0x00000002 /* not supported yet */
+#define SA_SIGINFO      0x00000004
+#define SA_ONSTACK      0x08000000
+#define SA_RESTART      0x10000000
+#define SA_NODEFER      0x40000000
+#define SA_RESETHAND    0x80000000
+
+#define SA_NOMASK       SA_NODEFER
+#define SA_ONESHOT      SA_RESETHAND
+
+#define SA_RESTORER     0x04000000
+
+/*
+ * sigaltstack controls
+ */
+#define SS_ONSTACK      1
+#define SS_DISABLE      2
+
+#define MINSIGSTKSZ     2048
+#define SIGSTKSZ        8192
+
+#ifndef __ASSEMBLY__
+
+#define SIG_BLOCK          0    /* for blocking signals */
+#define SIG_UNBLOCK        1    /* for unblocking signals */
+#define SIG_SETMASK        2    /* for setting the signal mask */
+
+/* Type of a signal handler.  */
+typedef void (*__sighandler_t)(int);
+
+#define SIG_DFL ((__sighandler_t)0)     /* default signal handling */
+#define SIG_IGN ((__sighandler_t)1)     /* ignore signal */
+#define SIG_ERR ((__sighandler_t)-1)    /* error return from signal */
+
+#ifdef __KERNEL__
+struct old_sigaction {
+        __sighandler_t sa_handler;
+        old_sigset_t sa_mask;
+        unsigned long sa_flags;
+        void (*sa_restorer)(void);
+};
+
+struct sigaction {
+        __sighandler_t sa_handler;
+        unsigned long sa_flags;
+        void (*sa_restorer)(void);
+        sigset_t sa_mask;               /* mask last for extensibility */
+};
+
+struct k_sigaction {
+        struct sigaction sa;
+};
+
+#else
+
+/* Here we must cater to libcs that poke about in kernel headers.  */
+
+struct sigaction {
+        union {
+          __sighandler_t _sa_handler;
+          void (*_sa_sigaction)(int, struct siginfo *, void *);
+        } _u;
+        sigset_t sa_mask;
+        unsigned long sa_flags;
+        void (*sa_restorer)(void);
+};
+
+#define sa_handler      _u._sa_handler
+#define sa_sigaction    _u._sa_sigaction
+
+#endif /* __KERNEL__ */
+
+typedef struct sigaltstack {
+        void *ss_sp;
+        int ss_flags;
+        size_t ss_size;
+} stack_t;
+
+#ifdef __KERNEL__
+#include <asm/sigcontext.h>
+#define ptrace_signal_deliver(regs, cookie) do { } while (0)
+
+#endif  /* __KERNEL__ */
+#endif  /* __ASSEMBLY__ */
+#endif  /* _XTENSA_SIGNAL_H */
diff --git a/arch/xtensa/include/asm/smp.h b/arch/xtensa/include/asm/smp.h
new file mode 100644
index 000000000000..83c569e3bdbd
--- /dev/null
+++ b/arch/xtensa/include/asm/smp.h
@@ -0,0 +1,27 @@
+/*
+ * include/asm-xtensa/smp.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SMP_H
+#define _XTENSA_SMP_H
+
+extern struct xtensa_cpuinfo boot_cpu_data;
+
+#define cpu_data (&boot_cpu_data)
+#define current_cpu_data boot_cpu_data
+
+struct xtensa_cpuinfo {
+        unsigned long   *pgd_cache;
+        unsigned long   *pte_cache;
+        unsigned long   pgtable_cache_sz;
+};
+
+#define cpu_logical_map(cpu)    (cpu)
+
+#endif  /* _XTENSA_SMP_H */
diff --git a/arch/xtensa/include/asm/socket.h b/arch/xtensa/include/asm/socket.h
new file mode 100644
index 000000000000..6100682b1da2
--- /dev/null
+++ b/arch/xtensa/include/asm/socket.h
@@ -0,0 +1,68 @@
+/*
+ * include/asm-xtensa/socket.h
+ *
+ * Copied from i386.
+ *
+ * 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.
+ */
+
+#ifndef _XTENSA_SOCKET_H
+#define _XTENSA_SOCKET_H
+
+#include <asm/sockios.h>
+
+/* For setsockoptions(2) */
+#define SOL_SOCKET      1
+
+#define SO_DEBUG        1
+#define SO_REUSEADDR    2
+#define SO_TYPE         3
+#define SO_ERROR        4
+#define SO_DONTROUTE    5
+#define SO_BROADCAST    6
+#define SO_SNDBUF       7
+#define SO_RCVBUF       8
+#define SO_SNDBUFFORCE  32
+#define SO_RCVBUFFORCE  33
+#define SO_KEEPALIVE    9
+#define SO_OOBINLINE    10
+#define SO_NO_CHECK     11
+#define SO_PRIORITY     12
+#define SO_LINGER       13
+#define SO_BSDCOMPAT    14
+/* To add :#define SO_REUSEPORT 15 */
+#define SO_PASSCRED     16
+#define SO_PEERCRED     17
+#define SO_RCVLOWAT     18
+#define SO_SNDLOWAT     19
+#define SO_RCVTIMEO     20
+#define SO_SNDTIMEO     21
+
+/* Security levels - as per NRL IPv6 - don't actually do anything */
+
+#define SO_SECURITY_AUTHENTICATION              22
+#define SO_SECURITY_ENCRYPTION_TRANSPORT        23
+#define SO_SECURITY_ENCRYPTION_NETWORK          24
+
+#define SO_BINDTODEVICE 25
+
+/* Socket filtering */
+
+#define SO_ATTACH_FILTER        26
+#define SO_DETACH_FILTER        27
+
+#define SO_PEERNAME             28
+#define SO_TIMESTAMP            29
+#define SCM_TIMESTAMP           SO_TIMESTAMP
+
+#define SO_ACCEPTCONN           30
+#define SO_PEERSEC              31
+#define SO_PASSSEC              34
+#define SO_TIMESTAMPNS          35
+#define SCM_TIMESTAMPNS         SO_TIMESTAMPNS
+
+#define SO_MARK                 36
+
+#endif  /* _XTENSA_SOCKET_H */
diff --git a/arch/xtensa/include/asm/sockios.h b/arch/xtensa/include/asm/sockios.h
new file mode 100644
index 000000000000..efe0af379f01
--- /dev/null
+++ b/arch/xtensa/include/asm/sockios.h
@@ -0,0 +1,31 @@
+/*
+ * include/asm-xtensa/sockios.h
+ *
+ * Socket-level I/O control calls.  Copied from MIPS.
+ *
+ * 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.
+ *
+ * Copyright (C) 1995 by Ralf Baechle
+ * Copyright (C) 2001 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SOCKIOS_H
+#define _XTENSA_SOCKIOS_H
+
+#include <asm/ioctl.h>
+
+/* Socket-level I/O control calls. */
+
+#define FIOGETOWN       _IOR('f', 123, int)
+#define FIOSETOWN       _IOW('f', 124, int)
+
+#define SIOCATMARK      _IOR('s', 7, int)
+#define SIOCSPGRP       _IOW('s', 8, pid_t)
+#define SIOCGPGRP       _IOR('s', 9, pid_t)
+
+#define SIOCGSTAMP      0x8906          /* Get stamp (timeval) */
+#define SIOCGSTAMPNS    0x8907          /* Get stamp (timespec) */
+
+#endif  /* _XTENSA_SOCKIOS_H */
diff --git a/arch/xtensa/include/asm/spinlock.h b/arch/xtensa/include/asm/spinlock.h
new file mode 100644
index 000000000000..8ff23649581b
--- /dev/null
+++ b/arch/xtensa/include/asm/spinlock.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/spinlock.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SPINLOCK_H
+#define _XTENSA_SPINLOCK_H
+
+#include <linux/spinlock.h>
+
+#endif  /* _XTENSA_SPINLOCK_H */
diff --git a/arch/xtensa/include/asm/stat.h b/arch/xtensa/include/asm/stat.h
new file mode 100644
index 000000000000..c4992038cee0
--- /dev/null
+++ b/arch/xtensa/include/asm/stat.h
@@ -0,0 +1,59 @@
+/*
+ * include/asm-xtensa/stat.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_STAT_H
+#define _XTENSA_STAT_H
+
+#define STAT_HAVE_NSEC 1
+
+struct stat {
+        unsigned long   st_dev;
+        unsigned long   st_ino;
+        unsigned int    st_mode;
+        unsigned int    st_nlink;
+        unsigned int    st_uid;
+        unsigned int    st_gid;
+        unsigned long   st_rdev;
+        long            st_size;
+        unsigned long   st_blksize;
+        unsigned long   st_blocks;
+        unsigned long   st_atime;
+        unsigned long   st_atime_nsec;
+        unsigned long   st_mtime;
+        unsigned long   st_mtime_nsec;
+        unsigned long   st_ctime;
+        unsigned long   st_ctime_nsec;
+        unsigned long   __unused4;
+        unsigned long   __unused5;
+};
+
+struct stat64  {
+        unsigned long long st_dev;      /* Device */
+        unsigned long long st_ino;      /* File serial number */
+        unsigned int  st_mode;          /* File mode. */
+        unsigned int  st_nlink;         /* Link count. */
+        unsigned int  st_uid;           /* User ID of the file's owner. */
+        unsigned int  st_gid;           /* Group ID of the file's group. */
+        unsigned long long st_rdev;     /* Device number, if device. */
+        long long st_size;              /* Size of file, in bytes. */
+        unsigned long st_blksize;       /* Optimal block size for I/O. */
+        unsigned long __unused2;
+        unsigned long long st_blocks;   /* Number 512-byte blocks allocated. */
+        unsigned long st_atime;         /* Time of last access. */
+        unsigned long st_atime_nsec;
+        unsigned long st_mtime;         /* Time of last modification. */
+        unsigned long st_mtime_nsec;
+        unsigned long st_ctime;         /* Time of last status change. */
+        unsigned long st_ctime_nsec;
+        unsigned long __unused4;
+        unsigned long __unused5;
+};
+
+#endif  /* _XTENSA_STAT_H */
diff --git a/arch/xtensa/include/asm/statfs.h b/arch/xtensa/include/asm/statfs.h
new file mode 100644
index 000000000000..9c3d1a213136
--- /dev/null
+++ b/arch/xtensa/include/asm/statfs.h
@@ -0,0 +1,17 @@
+/*
+ * include/asm-xtensa/statfs.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_STATFS_H
+#define _XTENSA_STATFS_H
+
+#include <asm-generic/statfs.h>
+
+#endif  /* _XTENSA_STATFS_H */
+
diff --git a/arch/xtensa/include/asm/string.h b/arch/xtensa/include/asm/string.h
new file mode 100644
index 000000000000..5fb8c27cbef5
--- /dev/null
+++ b/arch/xtensa/include/asm/string.h
@@ -0,0 +1,124 @@
+/*
+ * include/asm-xtensa/string.h
+ *
+ * These trivial string functions are considered part of the public domain.
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+/* We should optimize these. See arch/xtensa/lib/strncpy_user.S */
+
+#ifndef _XTENSA_STRING_H
+#define _XTENSA_STRING_H
+
+#define __HAVE_ARCH_STRCPY
+static inline char *strcpy(char *__dest, const char *__src)
+{
+        register char *__xdest = __dest;
+        unsigned long __dummy;
+
+        __asm__ __volatile__("1:\n\t"
+                "l8ui   %2, %1, 0\n\t"
+                "s8i    %2, %0, 0\n\t"
+                "addi   %1, %1, 1\n\t"
+                "addi   %0, %0, 1\n\t"
+                "bnez   %2, 1b\n\t"
+                : "=r" (__dest), "=r" (__src), "=&r" (__dummy)
+                : "0" (__dest), "1" (__src)
+                : "memory");
+
+        return __xdest;
+}
+
+#define __HAVE_ARCH_STRNCPY
+static inline char *strncpy(char *__dest, const char *__src, size_t __n)
+{
+        register char *__xdest = __dest;
+        unsigned long __dummy;
+
+        if (__n == 0)
+                return __xdest;
+
+        __asm__ __volatile__(
+                "1:\n\t"
+                "l8ui   %2, %1, 0\n\t"
+                "s8i    %2, %0, 0\n\t"
+                "addi   %1, %1, 1\n\t"
+                "addi   %0, %0, 1\n\t"
+                "beqz   %2, 2f\n\t"
+                "bne    %1, %5, 1b\n"
+                "2:"
+                : "=r" (__dest), "=r" (__src), "=&r" (__dummy)
+                : "0" (__dest), "1" (__src), "r" (__src+__n)
+                : "memory");
+
+        return __xdest;
+}
+
+#define __HAVE_ARCH_STRCMP
+static inline int strcmp(const char *__cs, const char *__ct)
+{
+        register int __res;
+        unsigned long __dummy;
+
+        __asm__ __volatile__(
+                "1:\n\t"
+                "l8ui   %3, %1, 0\n\t"
+                "addi   %1, %1, 1\n\t"
+                "l8ui   %2, %0, 0\n\t"
+                "addi   %0, %0, 1\n\t"
+                "beqz   %2, 2f\n\t"
+                "beq    %2, %3, 1b\n"
+                "2:\n\t"
+                "sub    %2, %3, %2"
+                : "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&r" (__dummy)
+                : "0" (__cs), "1" (__ct));
+
+        return __res;
+}
+
+#define __HAVE_ARCH_STRNCMP
+static inline int strncmp(const char *__cs, const char *__ct, size_t __n)
+{
+        register int __res;
+        unsigned long __dummy;
+
+        __asm__ __volatile__(
+                "mov    %2, %3\n"
+                "1:\n\t"
+                "beq    %0, %6, 2f\n\t"
+                "l8ui   %3, %1, 0\n\t"
+                "addi   %1, %1, 1\n\t"
+                "l8ui   %2, %0, 0\n\t"
+                "addi   %0, %0, 1\n\t"
+                "beqz   %2, 2f\n\t"
+                "beqz   %3, 2f\n\t"
+                "beq    %2, %3, 1b\n"
+                "2:\n\t"
+                "sub    %2, %3, %2"
+                : "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&r" (__dummy)
+                : "0" (__cs), "1" (__ct), "r" (__cs+__n));
+
+        return __res;
+}
+
+#define __HAVE_ARCH_MEMSET
+extern void *memset(void *__s, int __c, size_t __count);
+
+#define __HAVE_ARCH_MEMCPY
+extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
+
+#define __HAVE_ARCH_MEMMOVE
+extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
+
+/* Don't build bcopy at all ...  */
+#define __HAVE_ARCH_BCOPY
+
+#define __HAVE_ARCH_MEMSCAN
+#define memscan memchr
+
+#endif  /* _XTENSA_STRING_H */
diff --git a/arch/xtensa/include/asm/syscall.h b/arch/xtensa/include/asm/syscall.h
new file mode 100644
index 000000000000..05cebf8f62b1
--- /dev/null
+++ b/arch/xtensa/include/asm/syscall.h
@@ -0,0 +1,42 @@
+/*
+ * include/asm-xtensa/syscall.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2007 Tensilica Inc.
+ */
+
+struct pt_regs;
+struct sigaction;
+asmlinkage long xtensa_execve(char*, char**, char**, struct pt_regs*);
+asmlinkage long xtensa_clone(unsigned long, unsigned long, struct pt_regs*);
+asmlinkage long xtensa_pipe(int __user *);
+asmlinkage long xtensa_mmap2(unsigned long, unsigned long, unsigned long,
+                             unsigned long, unsigned long, unsigned long);
+asmlinkage long xtensa_ptrace(long, long, long, long);
+asmlinkage long xtensa_sigreturn(struct pt_regs*);
+asmlinkage long xtensa_rt_sigreturn(struct pt_regs*);
+asmlinkage long xtensa_sigsuspend(struct pt_regs*);
+asmlinkage long xtensa_rt_sigsuspend(struct pt_regs*);
+asmlinkage long xtensa_sigaction(int, const struct old_sigaction*,
+                                 struct old_sigaction*);
+asmlinkage long xtensa_sigaltstack(struct pt_regs *regs);
+asmlinkage long sys_rt_sigaction(int,
+                                 const struct sigaction __user *,
+                                 struct sigaction __user *,
+                                 size_t);
+asmlinkage long xtensa_shmat(int, char __user *, int);
+asmlinkage long xtensa_fadvise64_64(int, int,
+                                    unsigned long long, unsigned long long);
+
+/* Should probably move to linux/syscalls.h */
+struct pollfd;
+asmlinkage long sys_pselect6(int n, fd_set __user *inp, fd_set __user *outp,
+        fd_set __user *exp, struct timespec __user *tsp, void __user *sig);
+asmlinkage long sys_ppoll(struct pollfd __user *ufds, unsigned int nfds,
+        struct timespec __user *tsp, const sigset_t __user *sigmask,
+        size_t sigsetsize);
+
+
diff --git a/arch/xtensa/include/asm/system.h b/arch/xtensa/include/asm/system.h
new file mode 100644
index 000000000000..62b1e8f3c13c
--- /dev/null
+++ b/arch/xtensa/include/asm/system.h
@@ -0,0 +1,215 @@
+/*
+ * include/asm-xtensa/system.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SYSTEM_H
+#define _XTENSA_SYSTEM_H
+
+#include <linux/stringify.h>
+
+#include <asm/processor.h>
+
+/* interrupt control */
+
+#define local_save_flags(x)                                             \
+        __asm__ __volatile__ ("rsr %0,"__stringify(PS) : "=a" (x));
+#define local_irq_restore(x)    do {                                    \
+        __asm__ __volatile__ ("wsr %0, "__stringify(PS)" ; rsync"       \
+                              :: "a" (x) : "memory"); } while(0);
+#define local_irq_save(x)       do {                                    \
+        __asm__ __volatile__ ("rsil %0, "__stringify(LOCKLEVEL)         \
+                              : "=a" (x) :: "memory");} while(0);
+
+static inline void local_irq_disable(void)
+{
+        unsigned long flags;
+        __asm__ __volatile__ ("rsil %0, "__stringify(LOCKLEVEL)
+                              : "=a" (flags) :: "memory");
+}
+static inline void local_irq_enable(void)
+{
+        unsigned long flags;
+        __asm__ __volatile__ ("rsil %0, 0" : "=a" (flags) :: "memory");
+
+}
+
+static inline int irqs_disabled(void)
+{
+        unsigned long flags;
+        local_save_flags(flags);
+        return flags & 0xf;
+}
+
+
+#define smp_read_barrier_depends() do { } while(0)
+#define read_barrier_depends() do { } while(0)
+
+#define mb()  barrier()
+#define rmb() mb()
+#define wmb() mb()
+
+#ifdef CONFIG_SMP
+#error smp_* not defined
+#else
+#define smp_mb()        barrier()
+#define smp_rmb()       barrier()
+#define smp_wmb()       barrier()
+#endif
+
+#define set_mb(var, value)      do { var = value; mb(); } while (0)
+
+#if !defined (__ASSEMBLY__)
+
+/* * switch_to(n) should switch tasks to task nr n, first
+ * checking that n isn't the current task, in which case it does nothing.
+ */
+extern void *_switch_to(void *last, void *next);
+
+#endif  /* __ASSEMBLY__ */
+
+#define switch_to(prev,next,last)               \
+do {                                            \
+        (last) = _switch_to(prev, next);        \
+} while(0)
+
+/*
+ * cmpxchg
+ */
+
+static inline unsigned long
+__cmpxchg_u32(volatile int *p, int old, int new)
+{
+  __asm__ __volatile__("rsil    a15, "__stringify(LOCKLEVEL)"\n\t"
+                       "l32i    %0, %1, 0              \n\t"
+                       "bne     %0, %2, 1f             \n\t"
+                       "s32i    %3, %1, 0              \n\t"
+                       "1:                             \n\t"
+                       "wsr     a15, "__stringify(PS)" \n\t"
+                       "rsync                          \n\t"
+                       : "=&a" (old)
+                       : "a" (p), "a" (old), "r" (new)
+                       : "a15", "memory");
+  return old;
+}
+/* This function doesn't exist, so you'll get a linker error
+ * if something tries to do an invalid cmpxchg(). */
+
+extern void __cmpxchg_called_with_bad_pointer(void);
+
+static __inline__ unsigned long
+__cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
+{
+        switch (size) {
+        case 4:  return __cmpxchg_u32(ptr, old, new);
+        default: __cmpxchg_called_with_bad_pointer();
+                 return old;
+        }
+}
+
+#define cmpxchg(ptr,o,n)                                                      \
+        ({ __typeof__(*(ptr)) _o_ = (o);                                      \
+           __typeof__(*(ptr)) _n_ = (n);                                      \
+           (__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_,          \
+                                        (unsigned long)_n_, sizeof (*(ptr))); \
+        })
+
+#include <asm-generic/cmpxchg-local.h>
+
+static inline unsigned long __cmpxchg_local(volatile void *ptr,
+                                      unsigned long old,
+                                      unsigned long new, int size)
+{
+        switch (size) {
+        case 4:
+                return __cmpxchg_u32(ptr, old, new);
+        default:
+                return __cmpxchg_local_generic(ptr, old, new, size);
+        }
+
+        return old;
+}
+
+/*
+ * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make
+ * them available.
+ */
+#define cmpxchg_local(ptr, o, n)                                               \
+        ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\
+                        (unsigned long)(n), sizeof(*(ptr))))
+#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
+
+/*
+ * xchg_u32
+ *
+ * Note that a15 is used here because the register allocation
+ * done by the compiler is not guaranteed and a window overflow
+ * may not occur between the rsil and wsr instructions. By using
+ * a15 in the rsil, the machine is guaranteed to be in a state
+ * where no register reference will cause an overflow.
+ */
+
+static inline unsigned long xchg_u32(volatile int * m, unsigned long val)
+{
+  unsigned long tmp;
+  __asm__ __volatile__("rsil    a15, "__stringify(LOCKLEVEL)"\n\t"
+                       "l32i    %0, %1, 0              \n\t"
+                       "s32i    %2, %1, 0              \n\t"
+                       "wsr     a15, "__stringify(PS)" \n\t"
+                       "rsync                          \n\t"
+                       : "=&a" (tmp)
+                       : "a" (m), "a" (val)
+                       : "a15", "memory");
+  return tmp;
+}
+
+#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
+
+/*
+ * This only works if the compiler isn't horribly bad at optimizing.
+ * gcc-2.5.8 reportedly can't handle this, but I define that one to
+ * be dead anyway.
+ */
+
+extern void __xchg_called_with_bad_pointer(void);
+
+static __inline__ unsigned long
+__xchg(unsigned long x, volatile void * ptr, int size)
+{
+        switch (size) {
+                case 4:
+                        return xchg_u32(ptr, x);
+        }
+        __xchg_called_with_bad_pointer();
+        return x;
+}
+
+extern void set_except_vector(int n, void *addr);
+
+static inline void spill_registers(void)
+{
+        unsigned int a0, ps;
+
+        __asm__ __volatile__ (
+                "movi   a14," __stringify (PS_EXCM_BIT) " | 1\n\t"
+                "mov    a12, a0\n\t"
+                "rsr    a13," __stringify(SAR) "\n\t"
+                "xsr    a14," __stringify(PS) "\n\t"
+                "movi   a0, _spill_registers\n\t"
+                "rsync\n\t"
+                "callx0 a0\n\t"
+                "mov    a0, a12\n\t"
+                "wsr    a13," __stringify(SAR) "\n\t"
+                "wsr    a14," __stringify(PS) "\n\t"
+                :: "a" (&a0), "a" (&ps)
+                : "a2", "a3", "a4", "a7", "a11", "a12", "a13", "a14", "a15", "memory");
+}
+
+#define arch_align_stack(x) (x)
+
+#endif  /* _XTENSA_SYSTEM_H */
diff --git a/arch/xtensa/include/asm/termbits.h b/arch/xtensa/include/asm/termbits.h
new file mode 100644
index 000000000000..85aa6a3c0b6e
--- /dev/null
+++ b/arch/xtensa/include/asm/termbits.h
@@ -0,0 +1,219 @@
+/*
+ * include/asm-xtensa/termbits.h
+ *
+ * Copied from SH.
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_TERMBITS_H
+#define _XTENSA_TERMBITS_H
+
+
+#include <linux/posix_types.h>
+
+typedef unsigned char   cc_t;
+typedef unsigned int    speed_t;
+typedef unsigned int    tcflag_t;
+
+#define NCCS 19
+struct termios {
+        tcflag_t c_iflag;               /* input mode flags */
+        tcflag_t c_oflag;               /* output mode flags */
+        tcflag_t c_cflag;               /* control mode flags */
+        tcflag_t c_lflag;               /* local mode flags */
+        cc_t c_line;                    /* line discipline */
+        cc_t c_cc[NCCS];                /* control characters */
+};
+
+struct termios2 {
+        tcflag_t c_iflag;               /* input mode flags */
+        tcflag_t c_oflag;               /* output mode flags */
+        tcflag_t c_cflag;               /* control mode flags */
+        tcflag_t c_lflag;               /* local mode flags */
+        cc_t c_line;                    /* line discipline */
+        cc_t c_cc[NCCS];                /* control characters */
+        speed_t c_ispeed;               /* input speed */
+        speed_t c_ospeed;               /* output speed */
+};
+
+struct ktermios {
+        tcflag_t c_iflag;               /* input mode flags */
+        tcflag_t c_oflag;               /* output mode flags */
+        tcflag_t c_cflag;               /* control mode flags */
+        tcflag_t c_lflag;               /* local mode flags */
+        cc_t c_line;                    /* line discipline */
+        cc_t c_cc[NCCS];                /* control characters */
+        speed_t c_ispeed;               /* input speed */
+        speed_t c_ospeed;               /* output speed */
+};
+
+/* c_cc characters */
+
+#define VINTR 0
+#define VQUIT 1
+#define VERASE 2
+#define VKILL 3
+#define VEOF 4
+#define VTIME 5
+#define VMIN 6
+#define VSWTC 7
+#define VSTART 8
+#define VSTOP 9
+#define VSUSP 10
+#define VEOL 11
+#define VREPRINT 12
+#define VDISCARD 13
+#define VWERASE 14
+#define VLNEXT 15
+#define VEOL2 16
+
+/* c_iflag bits */
+
+#define IGNBRK  0000001
+#define BRKINT  0000002
+#define IGNPAR  0000004
+#define PARMRK  0000010
+#define INPCK   0000020
+#define ISTRIP  0000040
+#define INLCR   0000100
+#define IGNCR   0000200
+#define ICRNL   0000400
+#define IUCLC   0001000
+#define IXON    0002000
+#define IXANY   0004000
+#define IXOFF   0010000
+#define IMAXBEL 0020000
+#define IUTF8   0040000
+
+/* c_oflag bits */
+
+#define OPOST   0000001
+#define OLCUC   0000002
+#define ONLCR   0000004
+#define OCRNL   0000010
+#define ONOCR   0000020
+#define ONLRET  0000040
+#define OFILL   0000100
+#define OFDEL   0000200
+#define NLDLY   0000400
+#define   NL0   0000000
+#define   NL1   0000400
+#define CRDLY   0003000
+#define   CR0   0000000
+#define   CR1   0001000
+#define   CR2   0002000
+#define   CR3   0003000
+#define TABDLY  0014000
+#define   TAB0  0000000
+#define   TAB1  0004000
+#define   TAB2  0010000
+#define   TAB3  0014000
+#define   XTABS 0014000
+#define BSDLY   0020000
+#define   BS0   0000000
+#define   BS1   0020000
+#define VTDLY   0040000
+#define   VT0   0000000
+#define   VT1   0040000
+#define FFDLY   0100000
+#define   FF0   0000000
+#define   FF1   0100000
+
+/* c_cflag bit meaning */
+
+#define CBAUD   0010017
+#define  B0     0000000         /* hang up */
+#define  B50    0000001
+#define  B75    0000002
+#define  B110   0000003
+#define  B134   0000004
+#define  B150   0000005
+#define  B200   0000006
+#define  B300   0000007
+#define  B600   0000010
+#define  B1200  0000011
+#define  B1800  0000012
+#define  B2400  0000013
+#define  B4800  0000014
+#define  B9600  0000015
+#define  B19200 0000016
+#define  B38400 0000017
+#define EXTA B19200
+#define EXTB B38400
+#define CSIZE   0000060
+#define   CS5   0000000
+#define   CS6   0000020
+#define   CS7   0000040
+#define   CS8   0000060
+#define CSTOPB  0000100
+#define CREAD   0000200
+#define PARENB  0000400
+#define PARODD  0001000
+#define HUPCL   0002000
+#define CLOCAL  0004000
+#define CBAUDEX 0010000
+#define    BOTHER 0010000
+#define    B57600 0010001
+#define   B115200 0010002
+#define   B230400 0010003
+#define   B460800 0010004
+#define   B500000 0010005
+#define   B576000 0010006
+#define   B921600 0010007
+#define  B1000000 0010010
+#define  B1152000 0010011
+#define  B1500000 0010012
+#define  B2000000 0010013
+#define  B2500000 0010014
+#define  B3000000 0010015
+#define  B3500000 0010016
+#define  B4000000 0010017
+#define CIBAUD    002003600000          /* input baud rate */
+#define CMSPAR    010000000000          /* mark or space (stick) parity */
+#define CRTSCTS   020000000000          /* flow control */
+
+#define IBSHIFT 16              /* Shift from CBAUD to CIBAUD */
+
+/* c_lflag bits */
+
+#define ISIG    0000001
+#define ICANON  0000002
+#define XCASE   0000004
+#define ECHO    0000010
+#define ECHOE   0000020
+#define ECHOK   0000040
+#define ECHONL  0000100
+#define NOFLSH  0000200
+#define TOSTOP  0000400
+#define ECHOCTL 0001000
+#define ECHOPRT 0002000
+#define ECHOKE  0004000
+#define FLUSHO  0010000
+#define PENDIN  0040000
+#define IEXTEN  0100000
+
+/* tcflow() and TCXONC use these */
+
+#define TCOOFF          0
+#define TCOON           1
+#define TCIOFF          2
+#define TCION           3
+
+/* tcflush() and TCFLSH use these */
+
+#define TCIFLUSH        0
+#define TCOFLUSH        1
+#define TCIOFLUSH       2
+
+/* tcsetattr uses these */
+
+#define TCSANOW         0
+#define TCSADRAIN       1
+#define TCSAFLUSH       2
+
+#endif  /* _XTENSA_TERMBITS_H */
diff --git a/arch/xtensa/include/asm/termios.h b/arch/xtensa/include/asm/termios.h
new file mode 100644
index 000000000000..4673f42f88a7
--- /dev/null
+++ b/arch/xtensa/include/asm/termios.h
@@ -0,0 +1,105 @@
+/*
+ * include/asm-xtensa/termios.h
+ *
+ * Copied from SH.
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_TERMIOS_H
+#define _XTENSA_TERMIOS_H
+
+#include <asm/termbits.h>
+#include <asm/ioctls.h>
+
+struct winsize {
+        unsigned short ws_row;
+        unsigned short ws_col;
+        unsigned short ws_xpixel;
+        unsigned short ws_ypixel;
+};
+
+#define NCC 8
+struct termio {
+        unsigned short c_iflag;         /* input mode flags */
+        unsigned short c_oflag;         /* output mode flags */
+        unsigned short c_cflag;         /* control mode flags */
+        unsigned short c_lflag;         /* local mode flags */
+        unsigned char c_line;           /* line discipline */
+        unsigned char c_cc[NCC];        /* control characters */
+};
+
+/* Modem lines */
+
+#define TIOCM_LE        0x001
+#define TIOCM_DTR       0x002
+#define TIOCM_RTS       0x004
+#define TIOCM_ST        0x008
+#define TIOCM_SR        0x010
+#define TIOCM_CTS       0x020
+#define TIOCM_CAR       0x040
+#define TIOCM_RNG       0x080
+#define TIOCM_DSR       0x100
+#define TIOCM_CD        TIOCM_CAR
+#define TIOCM_RI        TIOCM_RNG
+#define TIOCM_OUT1      0x2000
+#define TIOCM_OUT2      0x4000
+#define TIOCM_LOOP      0x8000
+
+/* ioctl (fd, TIOCSERGETLSR, &result) where result may be as below */
+
+#ifdef __KERNEL__
+
+/*      intr=^C         quit=^\         erase=del       kill=^U
+        eof=^D          vtime=\0        vmin=\1         sxtc=\0
+        start=^Q        stop=^S         susp=^Z         eol=\0
+        reprint=^R      discard=^U      werase=^W       lnext=^V
+        eol2=\0
+*/
+#define INIT_C_CC "\003\034\177\025\004\0\1\0\021\023\032\0\022\017\027\026\0"
+
+/*
+ * Translate a "termio" structure into a "termios". Ugh.
+ */
+
+#define SET_LOW_TERMIOS_BITS(termios, termio, x) { \
+        unsigned short __tmp; \
+        get_user(__tmp,&(termio)->x); \
+        *(unsigned short *) &(termios)->x = __tmp; \
+}
+
+#define user_termio_to_kernel_termios(termios, termio) \
+({ \
+        SET_LOW_TERMIOS_BITS(termios, termio, c_iflag); \
+        SET_LOW_TERMIOS_BITS(termios, termio, c_oflag); \
+        SET_LOW_TERMIOS_BITS(termios, termio, c_cflag); \
+        SET_LOW_TERMIOS_BITS(termios, termio, c_lflag); \
+        copy_from_user((termios)->c_cc, (termio)->c_cc, NCC); \
+})
+
+/*
+ * Translate a "termios" structure into a "termio". Ugh.
+ */
+
+#define kernel_termios_to_user_termio(termio, termios) \
+({ \
+        put_user((termios)->c_iflag, &(termio)->c_iflag); \
+        put_user((termios)->c_oflag, &(termio)->c_oflag); \
+        put_user((termios)->c_cflag, &(termio)->c_cflag); \
+        put_user((termios)->c_lflag, &(termio)->c_lflag); \
+        put_user((termios)->c_line,  &(termio)->c_line); \
+        copy_to_user((termio)->c_cc, (termios)->c_cc, NCC); \
+})
+
+#define user_termios_to_kernel_termios(k, u) copy_from_user(k, u, sizeof(struct termios2))
+#define kernel_termios_to_user_termios(u, k) copy_to_user(u, k, sizeof(struct termios2))
+#define user_termios_to_kernel_termios_1(k, u) copy_from_user(k, u, sizeof(struct termios))
+#define kernel_termios_to_user_termios_1(u, k) copy_to_user(u, k, sizeof(struct termios))
+
+#endif  /* __KERNEL__ */
+
+#endif  /* _XTENSA_TERMIOS_H */
diff --git a/arch/xtensa/include/asm/thread_info.h b/arch/xtensa/include/asm/thread_info.h
new file mode 100644
index 000000000000..0f4fe1faf9ba
--- /dev/null
+++ b/arch/xtensa/include/asm/thread_info.h
@@ -0,0 +1,164 @@
+/*
+ * include/asm-xtensa/thread_info.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_THREAD_INFO_H
+#define _XTENSA_THREAD_INFO_H
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+# include <asm/processor.h>
+#endif
+
+/*
+ * low level task data that entry.S needs immediate access to
+ * - this struct should fit entirely inside of one cache line
+ * - this struct shares the supervisor stack pages
+ * - if the contents of this structure are changed, the assembly constants
+ *   must also be changed
+ */
+
+#ifndef __ASSEMBLY__
+
+#if XTENSA_HAVE_COPROCESSORS
+
+typedef struct xtregs_coprocessor {
+        xtregs_cp0_t cp0;
+        xtregs_cp1_t cp1;
+        xtregs_cp2_t cp2;
+        xtregs_cp3_t cp3;
+        xtregs_cp4_t cp4;
+        xtregs_cp5_t cp5;
+        xtregs_cp6_t cp6;
+        xtregs_cp7_t cp7;
+} xtregs_coprocessor_t;
+
+#endif
+
+struct thread_info {
+        struct task_struct      *task;          /* main task structure */
+        struct exec_domain      *exec_domain;   /* execution domain */
+        unsigned long           flags;          /* low level flags */
+        unsigned long           status;         /* thread-synchronous flags */
+        __u32                   cpu;            /* current CPU */
+        __s32                   preempt_count;  /* 0 => preemptable,< 0 => BUG*/
+
+        mm_segment_t            addr_limit;     /* thread address space */
+        struct restart_block    restart_block;
+
+        unsigned long           cpenable;
+
+        /* Allocate storage for extra user states and coprocessor states. */
+#if XTENSA_HAVE_COPROCESSORS
+        xtregs_coprocessor_t    xtregs_cp;
+#endif
+        xtregs_user_t           xtregs_user;
+};
+
+#else /* !__ASSEMBLY__ */
+
+/* offsets into the thread_info struct for assembly code access */
+#define TI_TASK          0x00000000
+#define TI_EXEC_DOMAIN   0x00000004
+#define TI_FLAGS         0x00000008
+#define TI_STATUS        0x0000000C
+#define TI_CPU           0x00000010
+#define TI_PRE_COUNT     0x00000014
+#define TI_ADDR_LIMIT    0x00000018
+#define TI_RESTART_BLOCK 0x000001C
+
+#endif
+
+#define PREEMPT_ACTIVE          0x10000000
+
+/*
+ * macros/functions for gaining access to the thread information structure
+ *
+ * preempt_count needs to be 1 initially, until the scheduler is functional.
+ */
+
+#ifndef __ASSEMBLY__
+
+#define INIT_THREAD_INFO(tsk)                   \
+{                                               \
+        .task           = &tsk,                 \
+        .exec_domain    = &default_exec_domain, \
+        .flags          = 0,                    \
+        .cpu            = 0,                    \
+        .preempt_count  = 1,                    \
+        .addr_limit     = KERNEL_DS,            \
+        .restart_block = {                      \
+                .fn = do_no_restart_syscall,    \
+        },                                      \
+}
+
+#define init_thread_info        (init_thread_union.thread_info)
+#define init_stack              (init_thread_union.stack)
+
+/* how to get the thread information struct from C */
+static inline struct thread_info *current_thread_info(void)
+{
+        struct thread_info *ti;
+         __asm__("extui %0,a1,0,13\n\t"
+                 "xor %0, a1, %0" : "=&r" (ti) : );
+        return ti;
+}
+
+#else /* !__ASSEMBLY__ */
+
+/* how to get the thread information struct from ASM */
+#define GET_THREAD_INFO(reg,sp) \
+        extui reg, sp, 0, 13; \
+        xor   reg, sp, reg
+#endif
+
+
+/*
+ * thread information flags
+ * - these are process state flags that various assembly files may need to access
+ * - pending work-to-be-done flags are in LSW
+ * - other flags in MSW
+ */
+#define TIF_SYSCALL_TRACE       0       /* syscall trace active */
+#define TIF_SIGPENDING          1       /* signal pending */
+#define TIF_NEED_RESCHED        2       /* rescheduling necessary */
+#define TIF_SINGLESTEP          3       /* restore singlestep on return to user mode */
+#define TIF_IRET                4       /* return with iret */
+#define TIF_MEMDIE              5
+#define TIF_RESTORE_SIGMASK     6       /* restore signal mask in do_signal() */
+#define TIF_POLLING_NRFLAG      16      /* true if poll_idle() is polling TIF_NEED_RESCHED */
+#define TIF_FREEZE              17      /* is freezing for suspend */
+
+#define _TIF_SYSCALL_TRACE      (1<<TIF_SYSCALL_TRACE)
+#define _TIF_SIGPENDING         (1<<TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED       (1<<TIF_NEED_RESCHED)
+#define _TIF_SINGLESTEP         (1<<TIF_SINGLESTEP)
+#define _TIF_IRET               (1<<TIF_IRET)
+#define _TIF_POLLING_NRFLAG     (1<<TIF_POLLING_NRFLAG)
+#define _TIF_RESTORE_SIGMASK    (1<<TIF_RESTORE_SIGMASK)
+#define _TIF_FREEZE             (1<<TIF_FREEZE)
+
+#define _TIF_WORK_MASK          0x0000FFFE      /* work to do on interrupt/exception return */
+#define _TIF_ALLWORK_MASK       0x0000FFFF      /* work to do on any return to u-space */
+
+/*
+ * Thread-synchronous status.
+ *
+ * This is different from the flags in that nobody else
+ * ever touches our thread-synchronous status, so we don't
+ * have to worry about atomic accesses.
+ */
+#define TS_USEDFPU              0x0001  /* FPU was used by this task this quantum (SMP) */
+
+#define THREAD_SIZE 8192        //(2*PAGE_SIZE)
+#define THREAD_SIZE_ORDER 1
+
+#endif  /* __KERNEL__ */
+#endif  /* _XTENSA_THREAD_INFO */
diff --git a/arch/xtensa/include/asm/timex.h b/arch/xtensa/include/asm/timex.h
new file mode 100644
index 000000000000..b83a8181d448
--- /dev/null
+++ b/arch/xtensa/include/asm/timex.h
@@ -0,0 +1,96 @@
+/*
+ * include/asm-xtensa/timex.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_TIMEX_H
+#define _XTENSA_TIMEX_H
+
+#ifdef __KERNEL__
+
+#include <asm/processor.h>
+#include <linux/stringify.h>
+
+#define _INTLEVEL(x)    XCHAL_INT ## x ## _LEVEL
+#define INTLEVEL(x)     _INTLEVEL(x)
+
+#if INTLEVEL(XCHAL_TIMER0_INTERRUPT) == 1
+# define LINUX_TIMER     0
+# define LINUX_TIMER_INT XCHAL_TIMER0_INTERRUPT
+#elif INTLEVEL(XCHAL_TIMER1_INTERRUPT) == 1
+# define LINUX_TIMER     1
+# define LINUX_TIMER_INT XCHAL_TIMER1_INTERRUPT
+#elif INTLEVEL(XCHAL_TIMER2_INTERRUPT) == 1
+# define LINUX_TIMER     2
+# define LINUX_TIMER_INT XCHAL_TIMER2_INTERRUPT
+#else
+# error "Bad timer number for Linux configurations!"
+#endif
+
+#define LINUX_TIMER_MASK        (1L << LINUX_TIMER_INT)
+
+#define CLOCK_TICK_RATE         1193180 /* (everyone is using this value) */
+#define CLOCK_TICK_FACTOR       20 /* Factor of both 10^6 and CLOCK_TICK_RATE */
+
+#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
+extern unsigned long ccount_per_jiffy;
+extern unsigned long ccount_nsec;
+#define CCOUNT_PER_JIFFY ccount_per_jiffy
+#define NSEC_PER_CCOUNT  ccount_nsec
+#else
+#define CCOUNT_PER_JIFFY (CONFIG_XTENSA_CPU_CLOCK*(1000000UL/HZ))
+#define NSEC_PER_CCOUNT (1000UL / CONFIG_XTENSA_CPU_CLOCK)
+#endif
+
+
+typedef unsigned long long cycles_t;
+
+/*
+ * Only used for SMP.
+ */
+
+extern cycles_t cacheflush_time;
+
+#define get_cycles()    (0)
+
+
+/*
+ * Register access.
+ */
+
+#define WSR_CCOUNT(r)     asm volatile ("wsr %0,"__stringify(CCOUNT) :: "a" (r))
+#define RSR_CCOUNT(r)     asm volatile ("rsr %0,"__stringify(CCOUNT) : "=a" (r))
+#define WSR_CCOMPARE(x,r) asm volatile ("wsr %0,"__stringify(CCOMPARE)"+"__stringify(x) :: "a"(r))
+#define RSR_CCOMPARE(x,r) asm volatile ("rsr %0,"__stringify(CCOMPARE)"+"__stringify(x) : "=a"(r))
+
+static inline unsigned long get_ccount (void)
+{
+        unsigned long ccount;
+        RSR_CCOUNT(ccount);
+        return ccount;
+}
+
+static inline void set_ccount (unsigned long ccount)
+{
+        WSR_CCOUNT(ccount);
+}
+
+static inline unsigned long get_linux_timer (void)
+{
+        unsigned ccompare;
+        RSR_CCOMPARE(LINUX_TIMER, ccompare);
+        return ccompare;
+}
+
+static inline void set_linux_timer (unsigned long ccompare)
+{
+        WSR_CCOMPARE(LINUX_TIMER, ccompare);
+}
+
+#endif  /* __KERNEL__ */
+#endif  /* _XTENSA_TIMEX_H */
diff --git a/arch/xtensa/include/asm/tlb.h b/arch/xtensa/include/asm/tlb.h
new file mode 100644
index 000000000000..31c220faca02
--- /dev/null
+++ b/arch/xtensa/include/asm/tlb.h
@@ -0,0 +1,47 @@
+/*
+ * include/asm-xtensa/tlb.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_TLB_H
+#define _XTENSA_TLB_H
+
+#include <asm/cache.h>
+#include <asm/page.h>
+
+#if (DCACHE_WAY_SIZE <= PAGE_SIZE)
+
+/* Note, read http://lkml.org/lkml/2004/1/15/6 */
+
+# define tlb_start_vma(tlb,vma)                 do { } while (0)
+# define tlb_end_vma(tlb,vma)                   do { } while (0)
+
+#else
+
+# define tlb_start_vma(tlb, vma)                                              \
+        do {                                                                  \
+                if (!tlb->fullmm)                                             \
+                        flush_cache_range(vma, vma->vm_start, vma->vm_end);   \
+        } while(0)
+
+# define tlb_end_vma(tlb, vma)                                                \
+        do {                                                                  \
+                if (!tlb->fullmm)                                             \
+                        flush_tlb_range(vma, vma->vm_start, vma->vm_end);     \
+        } while(0)
+
+#endif
+
+#define __tlb_remove_tlb_entry(tlb,pte,addr)    do { } while (0)
+#define tlb_flush(tlb)                          flush_tlb_mm((tlb)->mm)
+
+#include <asm-generic/tlb.h>
+
+#define __pte_free_tlb(tlb, pte)                pte_free((tlb)->mm, pte)
+
+#endif  /* _XTENSA_TLB_H */
diff --git a/arch/xtensa/include/asm/tlbflush.h b/arch/xtensa/include/asm/tlbflush.h
new file mode 100644
index 000000000000..46d240074f74
--- /dev/null
+++ b/arch/xtensa/include/asm/tlbflush.h
@@ -0,0 +1,191 @@
+/*
+ * include/asm-xtensa/tlbflush.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_TLBFLUSH_H
+#define _XTENSA_TLBFLUSH_H
+
+#ifdef __KERNEL__
+
+#include <linux/stringify.h>
+#include <asm/processor.h>
+
+#define DTLB_WAY_PGD    7
+
+#define ITLB_ARF_WAYS   4
+#define DTLB_ARF_WAYS   4
+
+#define ITLB_HIT_BIT    3
+#define DTLB_HIT_BIT    4
+
+#ifndef __ASSEMBLY__
+
+/* TLB flushing:
+ *
+ *  - flush_tlb_all() flushes all processes TLB entries
+ *  - flush_tlb_mm(mm) flushes the specified mm context TLB entries
+ *  - flush_tlb_page(mm, vmaddr) flushes a single page
+ *  - flush_tlb_range(mm, start, end) flushes a range of pages
+ */
+
+extern void flush_tlb_all(void);
+extern void flush_tlb_mm(struct mm_struct*);
+extern void flush_tlb_page(struct vm_area_struct*,unsigned long);
+extern void flush_tlb_range(struct vm_area_struct*,unsigned long,unsigned long);
+
+#define flush_tlb_kernel_range(start,end) flush_tlb_all()
+
+/* TLB operations. */
+
+static inline unsigned long itlb_probe(unsigned long addr)
+{
+        unsigned long tmp;
+        __asm__ __volatile__("pitlb  %0, %1\n\t" : "=a" (tmp) : "a" (addr));
+        return tmp;
+}
+
+static inline unsigned long dtlb_probe(unsigned long addr)
+{
+        unsigned long tmp;
+        __asm__ __volatile__("pdtlb  %0, %1\n\t" : "=a" (tmp) : "a" (addr));
+        return tmp;
+}
+
+static inline void invalidate_itlb_entry (unsigned long probe)
+{
+        __asm__ __volatile__("iitlb  %0; isync\n\t" : : "a" (probe));
+}
+
+static inline void invalidate_dtlb_entry (unsigned long probe)
+{
+        __asm__ __volatile__("idtlb  %0; dsync\n\t" : : "a" (probe));
+}
+
+/* Use the .._no_isync functions with caution.  Generally, these are
+ * handy for bulk invalidates followed by a single 'isync'.  The
+ * caller must follow up with an 'isync', which can be relatively
+ * expensive on some Xtensa implementations.
+ */
+static inline void invalidate_itlb_entry_no_isync (unsigned entry)
+{
+        /* Caller must follow up with 'isync'. */
+        __asm__ __volatile__ ("iitlb  %0\n" : : "a" (entry) );
+}
+
+static inline void invalidate_dtlb_entry_no_isync (unsigned entry)
+{
+        /* Caller must follow up with 'isync'. */
+        __asm__ __volatile__ ("idtlb  %0\n" : : "a" (entry) );
+}
+
+static inline void set_itlbcfg_register (unsigned long val)
+{
+        __asm__ __volatile__("wsr  %0, "__stringify(ITLBCFG)"\n\t" "isync\n\t"
+                             : : "a" (val));
+}
+
+static inline void set_dtlbcfg_register (unsigned long val)
+{
+        __asm__ __volatile__("wsr  %0, "__stringify(DTLBCFG)"; dsync\n\t"
+                             : : "a" (val));
+}
+
+static inline void set_ptevaddr_register (unsigned long val)
+{
+        __asm__ __volatile__(" wsr  %0, "__stringify(PTEVADDR)"; isync\n"
+                             : : "a" (val));
+}
+
+static inline unsigned long read_ptevaddr_register (void)
+{
+        unsigned long tmp;
+        __asm__ __volatile__("rsr  %0, "__stringify(PTEVADDR)"\n\t" : "=a" (tmp));
+        return tmp;
+}
+
+static inline void write_dtlb_entry (pte_t entry, int way)
+{
+        __asm__ __volatile__("wdtlb  %1, %0; dsync\n\t"
+                             : : "r" (way), "r" (entry) );
+}
+
+static inline void write_itlb_entry (pte_t entry, int way)
+{
+        __asm__ __volatile__("witlb  %1, %0; isync\n\t"
+                             : : "r" (way), "r" (entry) );
+}
+
+static inline void invalidate_page_directory (void)
+{
+        invalidate_dtlb_entry (DTLB_WAY_PGD);
+        invalidate_dtlb_entry (DTLB_WAY_PGD+1);
+        invalidate_dtlb_entry (DTLB_WAY_PGD+2);
+}
+
+static inline void invalidate_itlb_mapping (unsigned address)
+{
+        unsigned long tlb_entry;
+        if (((tlb_entry = itlb_probe(address)) & (1 << ITLB_HIT_BIT)) != 0)
+                invalidate_itlb_entry(tlb_entry);
+}
+
+static inline void invalidate_dtlb_mapping (unsigned address)
+{
+        unsigned long tlb_entry;
+        if (((tlb_entry = dtlb_probe(address)) & (1 << DTLB_HIT_BIT)) != 0)
+                invalidate_dtlb_entry(tlb_entry);
+}
+
+#define check_pgt_cache()       do { } while (0)
+
+
+/*
+ * DO NOT USE THESE FUNCTIONS.  These instructions aren't part of the Xtensa
+ * ISA and exist only for test purposes..
+ * You may find it helpful for MMU debugging, however.
+ *
+ * 'at' is the unmodified input register
+ * 'as' is the output register, as follows (specific to the Linux config):
+ *
+ *      as[31..12] contain the virtual address
+ *      as[11..08] are meaningless
+ *      as[07..00] contain the asid
+ */
+
+static inline unsigned long read_dtlb_virtual (int way)
+{
+        unsigned long tmp;
+        __asm__ __volatile__("rdtlb0  %0, %1\n\t" : "=a" (tmp), "+a" (way));
+        return tmp;
+}
+
+static inline unsigned long read_dtlb_translation (int way)
+{
+        unsigned long tmp;
+        __asm__ __volatile__("rdtlb1  %0, %1\n\t" : "=a" (tmp), "+a" (way));
+        return tmp;
+}
+
+static inline unsigned long read_itlb_virtual (int way)
+{
+        unsigned long tmp;
+        __asm__ __volatile__("ritlb0  %0, %1\n\t" : "=a" (tmp), "+a" (way));
+        return tmp;
+}
+
+static inline unsigned long read_itlb_translation (int way)
+{
+        unsigned long tmp;
+        __asm__ __volatile__("ritlb1  %0, %1\n\t" : "=a" (tmp), "+a" (way));
+        return tmp;
+}
+
+#endif  /* __ASSEMBLY__ */
+#endif  /* __KERNEL__ */
+#endif  /* _XTENSA_TLBFLUSH_H */
diff --git a/arch/xtensa/include/asm/topology.h b/arch/xtensa/include/asm/topology.h
new file mode 100644
index 000000000000..7309e38a0ccb
--- /dev/null
+++ b/arch/xtensa/include/asm/topology.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/topology.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_TOPOLOGY_H
+#define _XTENSA_TOPOLOGY_H
+
+#include <asm-generic/topology.h>
+
+#endif  /* _XTENSA_TOPOLOGY_H */
diff --git a/arch/xtensa/include/asm/types.h b/arch/xtensa/include/asm/types.h
new file mode 100644
index 000000000000..c89569a8da0c
--- /dev/null
+++ b/arch/xtensa/include/asm/types.h
@@ -0,0 +1,42 @@
+/*
+ * include/asm-xtensa/types.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_TYPES_H
+#define _XTENSA_TYPES_H
+
+#include <asm-generic/int-ll64.h>
+
+#ifdef __ASSEMBLY__
+# define __XTENSA_UL(x)         (x)
+# define __XTENSA_UL_CONST(x)   x
+#else
+# define __XTENSA_UL(x)         ((unsigned long)(x))
+# define __XTENSA_UL_CONST(x)   x##UL
+#endif
+
+#ifndef __ASSEMBLY__
+
+typedef unsigned short umode_t;
+
+/*
+ * These aren't exported outside the kernel to avoid name space clashes
+ */
+#ifdef __KERNEL__
+
+#define BITS_PER_LONG 32
+
+/* Dma addresses are 32-bits wide.  */
+
+typedef u32 dma_addr_t;
+
+#endif  /* __KERNEL__ */
+#endif
+
+#endif  /* _XTENSA_TYPES_H */
diff --git a/arch/xtensa/include/asm/uaccess.h b/arch/xtensa/include/asm/uaccess.h
new file mode 100644
index 000000000000..b8528426ab1f
--- /dev/null
+++ b/arch/xtensa/include/asm/uaccess.h
@@ -0,0 +1,500 @@
+/*
+ * include/asm-xtensa/uaccess.h
+ *
+ * User space memory access functions
+ *
+ * These routines provide basic accessing functions to the user memory
+ * space for the kernel. This header file provides fuctions such as:
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_UACCESS_H
+#define _XTENSA_UACCESS_H
+
+#include <linux/errno.h>
+
+#define VERIFY_READ    0
+#define VERIFY_WRITE   1
+
+#ifdef __ASSEMBLY__
+
+#include <asm/current.h>
+#include <asm/asm-offsets.h>
+#include <asm/processor.h>
+#include <asm/types.h>
+
+/*
+ * These assembly macros mirror the C macros that follow below.  They
+ * should always have identical functionality.  See
+ * arch/xtensa/kernel/sys.S for usage.
+ */
+
+#define KERNEL_DS       0
+#define USER_DS         1
+
+#define get_ds          (KERNEL_DS)
+
+/*
+ * get_fs reads current->thread.current_ds into a register.
+ * On Entry:
+ *      <ad>    anything
+ *      <sp>    stack
+ * On Exit:
+ *      <ad>    contains current->thread.current_ds
+ */
+        .macro  get_fs  ad, sp
+        GET_CURRENT(\ad,\sp)
+        l32i    \ad, \ad, THREAD_CURRENT_DS
+        .endm
+
+/*
+ * set_fs sets current->thread.current_ds to some value.
+ * On Entry:
+ *      <at>    anything (temp register)
+ *      <av>    value to write
+ *      <sp>    stack
+ * On Exit:
+ *      <at>    destroyed (actually, current)
+ *      <av>    preserved, value to write
+ */
+        .macro  set_fs  at, av, sp
+        GET_CURRENT(\at,\sp)
+        s32i    \av, \at, THREAD_CURRENT_DS
+        .endm
+
+/*
+ * kernel_ok determines whether we should bypass addr/size checking.
+ * See the equivalent C-macro version below for clarity.
+ * On success, kernel_ok branches to a label indicated by parameter
+ * <success>.  This implies that the macro falls through to the next
+ * insruction on an error.
+ *
+ * Note that while this macro can be used independently, we designed
+ * in for optimal use in the access_ok macro below (i.e., we fall
+ * through on error).
+ *
+ * On Entry:
+ *      <at>            anything (temp register)
+ *      <success>       label to branch to on success; implies
+ *                      fall-through macro on error
+ *      <sp>            stack pointer
+ * On Exit:
+ *      <at>            destroyed (actually, current->thread.current_ds)
+ */
+
+#if ((KERNEL_DS != 0) || (USER_DS == 0))
+# error Assembly macro kernel_ok fails
+#endif
+        .macro  kernel_ok  at, sp, success
+        get_fs  \at, \sp
+        beqz    \at, \success
+        .endm
+
+/*
+ * user_ok determines whether the access to user-space memory is allowed.
+ * See the equivalent C-macro version below for clarity.
+ *
+ * On error, user_ok branches to a label indicated by parameter
+ * <error>.  This implies that the macro falls through to the next
+ * instruction on success.
+ *
+ * Note that while this macro can be used independently, we designed
+ * in for optimal use in the access_ok macro below (i.e., we fall
+ * through on success).
+ *
+ * On Entry:
+ *      <aa>    register containing memory address
+ *      <as>    register containing memory size
+ *      <at>    temp register
+ *      <error> label to branch to on error; implies fall-through
+ *              macro on success
+ * On Exit:
+ *      <aa>    preserved
+ *      <as>    preserved
+ *      <at>    destroyed (actually, (TASK_SIZE + 1 - size))
+ */
+        .macro  user_ok aa, as, at, error
+        movi    \at, __XTENSA_UL_CONST(TASK_SIZE)
+        bgeu    \as, \at, \error
+        sub     \at, \at, \as
+        bgeu    \aa, \at, \error
+        .endm
+
+/*
+ * access_ok determines whether a memory access is allowed.  See the
+ * equivalent C-macro version below for clarity.
+ *
+ * On error, access_ok branches to a label indicated by parameter
+ * <error>.  This implies that the macro falls through to the next
+ * instruction on success.
+ *
+ * Note that we assume success is the common case, and we optimize the
+ * branch fall-through case on success.
+ *
+ * On Entry:
+ *      <aa>    register containing memory address
+ *      <as>    register containing memory size
+ *      <at>    temp register
+ *      <sp>
+ *      <error> label to branch to on error; implies fall-through
+ *              macro on success
+ * On Exit:
+ *      <aa>    preserved
+ *      <as>    preserved
+ *      <at>    destroyed
+ */
+        .macro  access_ok  aa, as, at, sp, error
+        kernel_ok  \at, \sp, .Laccess_ok_\@
+        user_ok    \aa, \as, \at, \error
+.Laccess_ok_\@:
+        .endm
+
+#else /* __ASSEMBLY__ not defined */
+
+#include <linux/sched.h>
+#include <asm/types.h>
+
+/*
+ * The fs value determines whether argument validity checking should
+ * be performed or not.  If get_fs() == USER_DS, checking is
+ * performed, with get_fs() == KERNEL_DS, checking is bypassed.
+ *
+ * For historical reasons (Data Segment Register?), these macros are
+ * grossly misnamed.
+ */
+
+#define KERNEL_DS       ((mm_segment_t) { 0 })
+#define USER_DS         ((mm_segment_t) { 1 })
+
+#define get_ds()        (KERNEL_DS)
+#define get_fs()        (current->thread.current_ds)
+#define set_fs(val)     (current->thread.current_ds = (val))
+
+#define segment_eq(a,b) ((a).seg == (b).seg)
+
+#define __kernel_ok (segment_eq(get_fs(), KERNEL_DS))
+#define __user_ok(addr,size) (((size) <= TASK_SIZE)&&((addr) <= TASK_SIZE-(size)))
+#define __access_ok(addr,size) (__kernel_ok || __user_ok((addr),(size)))
+#define access_ok(type,addr,size) __access_ok((unsigned long)(addr),(size))
+
+/*
+ * These are the main single-value transfer routines.  They
+ * automatically use the right size if we just have the right pointer
+ * type.
+ *
+ * This gets kind of ugly. We want to return _two_ values in
+ * "get_user()" and yet we don't want to do any pointers, because that
+ * is too much of a performance impact. Thus we have a few rather ugly
+ * macros here, and hide all the uglyness from the user.
+ *
+ * Careful to not
+ * (a) re-use the arguments for side effects (sizeof is ok)
+ * (b) require any knowledge of processes at this stage
+ */
+#define put_user(x,ptr) __put_user_check((x),(ptr),sizeof(*(ptr)))
+#define get_user(x,ptr) __get_user_check((x),(ptr),sizeof(*(ptr)))
+
+/*
+ * The "__xxx" versions of the user access functions are versions that
+ * do not verify the address space, that must have been done previously
+ * with a separate "access_ok()" call (this is used when we do multiple
+ * accesses to the same area of user memory).
+ */
+#define __put_user(x,ptr) __put_user_nocheck((x),(ptr),sizeof(*(ptr)))
+#define __get_user(x,ptr) __get_user_nocheck((x),(ptr),sizeof(*(ptr)))
+
+
+extern long __put_user_bad(void);
+
+#define __put_user_nocheck(x,ptr,size)                  \
+({                                                      \
+        long __pu_err;                                  \
+        __put_user_size((x),(ptr),(size),__pu_err);     \
+        __pu_err;                                       \
+})
+
+#define __put_user_check(x,ptr,size)                            \
+({                                                              \
+        long __pu_err = -EFAULT;                                \
+        __typeof__(*(ptr)) *__pu_addr = (ptr);                  \
+        if (access_ok(VERIFY_WRITE,__pu_addr,size))             \
+                __put_user_size((x),__pu_addr,(size),__pu_err); \
+        __pu_err;                                               \
+})
+
+#define __put_user_size(x,ptr,size,retval)                              \
+do {                                                                    \
+        int __cb;                                                       \
+        retval = 0;                                                     \
+        switch (size) {                                                 \
+        case 1: __put_user_asm(x,ptr,retval,1,"s8i",__cb);  break;      \
+        case 2: __put_user_asm(x,ptr,retval,2,"s16i",__cb); break;      \
+        case 4: __put_user_asm(x,ptr,retval,4,"s32i",__cb); break;      \
+        case 8: {                                                       \
+                     __typeof__(*ptr) __v64 = x;                        \
+                     retval = __copy_to_user(ptr,&__v64,8);             \
+                     break;                                             \
+                }                                                       \
+        default: __put_user_bad();                                      \
+        }                                                               \
+} while (0)
+
+
+/*
+ * Consider a case of a user single load/store would cause both an
+ * unaligned exception and an MMU-related exception (unaligned
+ * exceptions happen first):
+ *
+ * User code passes a bad variable ptr to a system call.
+ * Kernel tries to access the variable.
+ * Unaligned exception occurs.
+ * Unaligned exception handler tries to make aligned accesses.
+ * Double exception occurs for MMU-related cause (e.g., page not mapped).
+ * do_page_fault() thinks the fault address belongs to the kernel, not the
+ * user, and panics.
+ *
+ * The kernel currently prohibits user unaligned accesses.  We use the
+ * __check_align_* macros to check for unaligned addresses before
+ * accessing user space so we don't crash the kernel.  Both
+ * __put_user_asm and __get_user_asm use these alignment macros, so
+ * macro-specific labels such as 0f, 1f, %0, %2, and %3 must stay in
+ * sync.
+ */
+
+#define __check_align_1  ""
+
+#define __check_align_2                         \
+        "   _bbci.l %3,  0, 1f          \n"     \
+        "   movi    %0, %4              \n"     \
+        "   _j      2f                  \n"
+
+#define __check_align_4                         \
+        "   _bbsi.l %3,  0, 0f          \n"     \
+        "   _bbci.l %3,  1, 1f          \n"     \
+        "0: movi    %0, %4              \n"     \
+        "   _j      2f                  \n"
+
+
+/*
+ * We don't tell gcc that we are accessing memory, but this is OK
+ * because we do not write to any memory gcc knows about, so there
+ * are no aliasing issues.
+ *
+ * WARNING: If you modify this macro at all, verify that the
+ * __check_align_* macros still work.
+ */
+#define __put_user_asm(x, addr, err, align, insn, cb)   \
+   __asm__ __volatile__(                                \
+        __check_align_##align                           \
+        "1: "insn"  %2, %3, 0           \n"             \
+        "2:                             \n"             \
+        "   .section  .fixup,\"ax\"     \n"             \
+        "   .align 4                    \n"             \
+        "4:                             \n"             \
+        "   .long  2b                   \n"             \
+        "5:                             \n"             \
+        "   l32r   %1, 4b               \n"             \
+        "   movi   %0, %4               \n"             \
+        "   jx     %1                   \n"             \
+        "   .previous                   \n"             \
+        "   .section  __ex_table,\"a\"  \n"             \
+        "   .long       1b, 5b          \n"             \
+        "   .previous"                                  \
+        :"=r" (err), "=r" (cb)                          \
+        :"r" ((int)(x)), "r" (addr), "i" (-EFAULT), "0" (err))
+
+#define __get_user_nocheck(x,ptr,size)                          \
+({                                                              \
+        long __gu_err, __gu_val;                                \
+        __get_user_size(__gu_val,(ptr),(size),__gu_err);        \
+        (x) = (__typeof__(*(ptr)))__gu_val;                     \
+        __gu_err;                                               \
+})
+
+#define __get_user_check(x,ptr,size)                                    \
+({                                                                      \
+        long __gu_err = -EFAULT, __gu_val = 0;                          \
+        const __typeof__(*(ptr)) *__gu_addr = (ptr);                    \
+        if (access_ok(VERIFY_READ,__gu_addr,size))                      \
+                __get_user_size(__gu_val,__gu_addr,(size),__gu_err);    \
+        (x) = (__typeof__(*(ptr)))__gu_val;                             \
+        __gu_err;                                                       \
+})
+
+extern long __get_user_bad(void);
+
+#define __get_user_size(x,ptr,size,retval)                              \
+do {                                                                    \
+        int __cb;                                                       \
+        retval = 0;                                                     \
+        switch (size) {                                                 \
+          case 1: __get_user_asm(x,ptr,retval,1,"l8ui",__cb);  break;   \
+          case 2: __get_user_asm(x,ptr,retval,2,"l16ui",__cb); break;   \
+          case 4: __get_user_asm(x,ptr,retval,4,"l32i",__cb);  break;   \
+          case 8: retval = __copy_from_user(&x,ptr,8);    break;        \
+          default: (x) = __get_user_bad();                              \
+        }                                                               \
+} while (0)
+
+
+/*
+ * WARNING: If you modify this macro at all, verify that the
+ * __check_align_* macros still work.
+ */
+#define __get_user_asm(x, addr, err, align, insn, cb) \
+   __asm__ __volatile__(                        \
+        __check_align_##align                   \
+        "1: "insn"  %2, %3, 0           \n"     \
+        "2:                             \n"     \
+        "   .section  .fixup,\"ax\"     \n"     \
+        "   .align 4                    \n"     \
+        "4:                             \n"     \
+        "   .long  2b                   \n"     \
+        "5:                             \n"     \
+        "   l32r   %1, 4b               \n"     \
+        "   movi   %2, 0                \n"     \
+        "   movi   %0, %4               \n"     \
+        "   jx     %1                   \n"     \
+        "   .previous                   \n"     \
+        "   .section  __ex_table,\"a\"  \n"     \
+        "   .long       1b, 5b          \n"     \
+        "   .previous"                          \
+        :"=r" (err), "=r" (cb), "=r" (x)        \
+        :"r" (addr), "i" (-EFAULT), "0" (err))
+
+
+/*
+ * Copy to/from user space
+ */
+
+/*
+ * We use a generic, arbitrary-sized copy subroutine.  The Xtensa
+ * architecture would cause heavy code bloat if we tried to inline
+ * these functions and provide __constant_copy_* equivalents like the
+ * i386 versions.  __xtensa_copy_user is quite efficient.  See the
+ * .fixup section of __xtensa_copy_user for a discussion on the
+ * X_zeroing equivalents for Xtensa.
+ */
+
+extern unsigned __xtensa_copy_user(void *to, const void *from, unsigned n);
+#define __copy_user(to,from,size) __xtensa_copy_user(to,from,size)
+
+
+static inline unsigned long
+__generic_copy_from_user_nocheck(void *to, const void *from, unsigned long n)
+{
+        return __copy_user(to,from,n);
+}
+
+static inline unsigned long
+__generic_copy_to_user_nocheck(void *to, const void *from, unsigned long n)
+{
+        return __copy_user(to,from,n);
+}
+
+static inline unsigned long
+__generic_copy_to_user(void *to, const void *from, unsigned long n)
+{
+        prefetch(from);
+        if (access_ok(VERIFY_WRITE, to, n))
+                return __copy_user(to,from,n);
+        return n;
+}
+
+static inline unsigned long
+__generic_copy_from_user(void *to, const void *from, unsigned long n)
+{
+        prefetchw(to);
+        if (access_ok(VERIFY_READ, from, n))
+                return __copy_user(to,from,n);
+        else
+                memset(to, 0, n);
+        return n;
+}
+
+#define copy_to_user(to,from,n) __generic_copy_to_user((to),(from),(n))
+#define copy_from_user(to,from,n) __generic_copy_from_user((to),(from),(n))
+#define __copy_to_user(to,from,n) __generic_copy_to_user_nocheck((to),(from),(n))
+#define __copy_from_user(to,from,n) __generic_copy_from_user_nocheck((to),(from),(n))
+#define __copy_to_user_inatomic __copy_to_user
+#define __copy_from_user_inatomic __copy_from_user
+
+
+/*
+ * We need to return the number of bytes not cleared.  Our memset()
+ * returns zero if a problem occurs while accessing user-space memory.
+ * In that event, return no memory cleared.  Otherwise, zero for
+ * success.
+ */
+
+static inline unsigned long
+__xtensa_clear_user(void *addr, unsigned long size)
+{
+        if ( ! memset(addr, 0, size) )
+                return size;
+        return 0;
+}
+
+static inline unsigned long
+clear_user(void *addr, unsigned long size)
+{
+        if (access_ok(VERIFY_WRITE, addr, size))
+                return __xtensa_clear_user(addr, size);
+        return size ? -EFAULT : 0;
+}
+
+#define __clear_user  __xtensa_clear_user
+
+
+extern long __strncpy_user(char *, const char *, long);
+#define __strncpy_from_user __strncpy_user
+
+static inline long
+strncpy_from_user(char *dst, const char *src, long count)
+{
+        if (access_ok(VERIFY_READ, src, 1))
+                return __strncpy_from_user(dst, src, count);
+        return -EFAULT;
+}
+
+
+#define strlen_user(str) strnlen_user((str), TASK_SIZE - 1)
+
+/*
+ * Return the size of a string (including the ending 0!)
+ */
+extern long __strnlen_user(const char *, long);
+
+static inline long strnlen_user(const char *str, long len)
+{
+        unsigned long top = __kernel_ok ? ~0UL : TASK_SIZE - 1;
+
+        if ((unsigned long)str > top)
+                return 0;
+        return __strnlen_user(str, len);
+}
+
+
+struct exception_table_entry
+{
+        unsigned long insn, fixup;
+};
+
+/* Returns 0 if exception not found and fixup.unit otherwise.  */
+
+extern unsigned long search_exception_table(unsigned long addr);
+extern void sort_exception_table(void);
+
+/* Returns the new pc */
+#define fixup_exception(map_reg, fixup_unit, pc)                \
+({                                                              \
+        fixup_unit;                                             \
+})
+
+#endif  /* __ASSEMBLY__ */
+#endif  /* _XTENSA_UACCESS_H */
diff --git a/arch/xtensa/include/asm/ucontext.h b/arch/xtensa/include/asm/ucontext.h
new file mode 100644
index 000000000000..94c94ed3e00a
--- /dev/null
+++ b/arch/xtensa/include/asm/ucontext.h
@@ -0,0 +1,22 @@
+/*
+ * include/asm-xtensa/ucontext.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_UCONTEXT_H
+#define _XTENSA_UCONTEXT_H
+
+struct ucontext {
+        unsigned long     uc_flags;
+        struct ucontext  *uc_link;
+        stack_t           uc_stack;
+        struct sigcontext uc_mcontext;
+        sigset_t          uc_sigmask;   /* mask last for extensibility */
+};
+
+#endif /* _XTENSA_UCONTEXT_H */
diff --git a/arch/xtensa/include/asm/unaligned.h b/arch/xtensa/include/asm/unaligned.h
new file mode 100644
index 000000000000..8f3424fc5d18
--- /dev/null
+++ b/arch/xtensa/include/asm/unaligned.h
@@ -0,0 +1,29 @@
+/*
+ * Xtensa doesn't handle unaligned accesses efficiently.
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+#ifndef _ASM_XTENSA_UNALIGNED_H
+#define _ASM_XTENSA_UNALIGNED_H
+
+#ifdef __XTENSA_EL__
+# include <linux/unaligned/le_memmove.h>
+# include <linux/unaligned/be_byteshift.h>
+# include <linux/unaligned/generic.h>
+# define get_unaligned  __get_unaligned_le
+# define put_unaligned  __put_unaligned_le
+#elif defined(__XTENSA_EB__)
+# include <linux/unaligned/be_memmove.h>
+# include <linux/unaligned/le_byteshift.h>
+# include <linux/unaligned/generic.h>
+# define get_unaligned  __get_unaligned_be
+# define put_unaligned  __put_unaligned_be
+#else
+# error processor byte order undefined!
+#endif
+
+#endif  /* _ASM_XTENSA_UNALIGNED_H */
diff --git a/arch/xtensa/include/asm/unistd.h b/arch/xtensa/include/asm/unistd.h
new file mode 100644
index 000000000000..c092c8fbb2cf
--- /dev/null
+++ b/arch/xtensa/include/asm/unistd.h
@@ -0,0 +1,735 @@
+/*
+ * include/asm-xtensa/unistd.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_UNISTD_H
+#define _XTENSA_UNISTD_H
+
+#ifndef __SYSCALL
+# define __SYSCALL(nr,func,nargs)
+#endif
+
+#define __NR_spill                                0
+__SYSCALL(  0, sys_ni_syscall, 0)
+#define __NR_xtensa                               1
+__SYSCALL(  1, sys_ni_syscall, 0)
+#define __NR_available4                           2
+__SYSCALL(  2, sys_ni_syscall, 0)
+#define __NR_available5                           3
+__SYSCALL(  3, sys_ni_syscall, 0)
+#define __NR_available6                           4
+__SYSCALL(  4, sys_ni_syscall, 0)
+#define __NR_available7                           5
+__SYSCALL(  5, sys_ni_syscall, 0)
+#define __NR_available8                           6
+__SYSCALL(  6, sys_ni_syscall, 0)
+#define __NR_available9                           7
+__SYSCALL(  7, sys_ni_syscall, 0)
+
+/* File Operations */
+
+#define __NR_open                                 8
+__SYSCALL(  8, sys_open, 3)
+#define __NR_close                                9
+__SYSCALL(  9, sys_close, 1)
+#define __NR_dup                                 10
+__SYSCALL( 10, sys_dup, 1)
+#define __NR_dup2                                11
+__SYSCALL( 11, sys_dup2, 2)
+#define __NR_read                                12
+__SYSCALL( 12, sys_read, 3)
+#define __NR_write                               13
+__SYSCALL( 13, sys_write, 3)
+#define __NR_select                              14
+__SYSCALL( 14, sys_select, 5)
+#define __NR_lseek                               15
+__SYSCALL( 15, sys_lseek, 3)
+#define __NR_poll                                16
+__SYSCALL( 16, sys_poll, 3)
+#define __NR__llseek                             17
+__SYSCALL( 17, sys_llseek, 5)
+#define __NR_epoll_wait                          18
+__SYSCALL( 18, sys_epoll_wait, 4)
+#define __NR_epoll_ctl                           19
+__SYSCALL( 19, sys_epoll_ctl, 4)
+#define __NR_epoll_create                        20
+__SYSCALL( 20, sys_epoll_create, 1)
+#define __NR_creat                               21
+__SYSCALL( 21, sys_creat, 2)
+#define __NR_truncate                            22
+__SYSCALL( 22, sys_truncate, 2)
+#define __NR_ftruncate                           23
+__SYSCALL( 23, sys_ftruncate, 2)
+#define __NR_readv                               24
+__SYSCALL( 24, sys_readv, 3)
+#define __NR_writev                              25
+__SYSCALL( 25, sys_writev, 3)
+#define __NR_fsync                               26
+__SYSCALL( 26, sys_fsync, 1)
+#define __NR_fdatasync                           27
+__SYSCALL( 27, sys_fdatasync, 1)
+#define __NR_truncate64                          28
+__SYSCALL( 28, sys_truncate64, 2)
+#define __NR_ftruncate64                         29
+__SYSCALL( 29, sys_ftruncate64, 2)
+#define __NR_pread64                             30
+__SYSCALL( 30, sys_pread64, 6)
+#define __NR_pwrite64                            31
+__SYSCALL( 31, sys_pwrite64, 6)
+
+#define __NR_link                                32
+__SYSCALL( 32, sys_link, 2)
+#define __NR_rename                              33
+__SYSCALL( 33, sys_rename, 2)
+#define __NR_symlink                             34
+__SYSCALL( 34, sys_symlink, 2)
+#define __NR_readlink                            35
+__SYSCALL( 35, sys_readlink, 3)
+#define __NR_mknod                               36
+__SYSCALL( 36, sys_mknod, 3)
+#define __NR_pipe                                37
+__SYSCALL( 37, xtensa_pipe, 1)
+#define __NR_unlink                              38
+__SYSCALL( 38, sys_unlink, 1)
+#define __NR_rmdir                               39
+__SYSCALL( 39, sys_rmdir, 1)
+
+#define __NR_mkdir                               40
+__SYSCALL( 40, sys_mkdir, 2)
+#define __NR_chdir                               41
+__SYSCALL( 41, sys_chdir, 1)
+#define __NR_fchdir                              42
+__SYSCALL( 42, sys_fchdir, 1)
+#define __NR_getcwd                              43
+__SYSCALL( 43, sys_getcwd, 2)
+
+#define __NR_chmod                               44
+__SYSCALL( 44, sys_chmod, 2)
+#define __NR_chown                               45
+__SYSCALL( 45, sys_chown, 3)
+#define __NR_stat                                46
+__SYSCALL( 46, sys_newstat, 2)
+#define __NR_stat64                              47
+__SYSCALL( 47, sys_stat64, 2)
+
+#define __NR_lchown                              48
+__SYSCALL( 48, sys_lchown, 3)
+#define __NR_lstat                               49
+__SYSCALL( 49, sys_newlstat, 2)
+#define __NR_lstat64                             50
+__SYSCALL( 50, sys_lstat64, 2)
+#define __NR_available51                         51
+__SYSCALL( 51, sys_ni_syscall, 0)
+
+#define __NR_fchmod                              52
+__SYSCALL( 52, sys_fchmod, 2)
+#define __NR_fchown                              53
+__SYSCALL( 53, sys_fchown, 3)
+#define __NR_fstat                               54
+__SYSCALL( 54, sys_newfstat, 2)
+#define __NR_fstat64                             55
+__SYSCALL( 55, sys_fstat64, 2)
+
+#define __NR_flock                               56
+__SYSCALL( 56, sys_flock, 2)
+#define __NR_access                              57
+__SYSCALL( 57, sys_access, 2)
+#define __NR_umask                               58
+__SYSCALL( 58, sys_umask, 1)
+#define __NR_getdents                            59
+__SYSCALL( 59, sys_getdents, 3)
+#define __NR_getdents64                          60
+__SYSCALL( 60, sys_getdents64, 3)
+#define __NR_fcntl64                             61
+__SYSCALL( 61, sys_fcntl64, 3)
+#define __NR_available62                         62
+__SYSCALL( 62, sys_ni_syscall, 0)
+#define __NR_fadvise64_64                        63
+__SYSCALL( 63, xtensa_fadvise64_64, 6)
+#define __NR_utime                               64     /* glibc 2.3.3 ?? */
+__SYSCALL( 64, sys_utime, 2)
+#define __NR_utimes                              65
+__SYSCALL( 65, sys_utimes, 2)
+#define __NR_ioctl                               66
+__SYSCALL( 66, sys_ioctl, 3)
+#define __NR_fcntl                               67
+__SYSCALL( 67, sys_fcntl, 3)
+
+#define __NR_setxattr                            68
+__SYSCALL( 68, sys_setxattr, 5)
+#define __NR_getxattr                            69
+__SYSCALL( 69, sys_getxattr, 4)
+#define __NR_listxattr                           70
+__SYSCALL( 70, sys_listxattr, 3)
+#define __NR_removexattr                         71
+__SYSCALL( 71, sys_removexattr, 2)
+#define __NR_lsetxattr                           72
+__SYSCALL( 72, sys_lsetxattr, 5)
+#define __NR_lgetxattr                           73
+__SYSCALL( 73, sys_lgetxattr, 4)
+#define __NR_llistxattr                          74
+__SYSCALL( 74, sys_llistxattr, 3)
+#define __NR_lremovexattr                        75
+__SYSCALL( 75, sys_lremovexattr, 2)
+#define __NR_fsetxattr                           76
+__SYSCALL( 76, sys_fsetxattr, 5)
+#define __NR_fgetxattr                           77
+__SYSCALL( 77, sys_fgetxattr, 4)
+#define __NR_flistxattr                          78
+__SYSCALL( 78, sys_flistxattr, 3)
+#define __NR_fremovexattr                        79
+__SYSCALL( 79, sys_fremovexattr, 2)
+
+/* File Map / Shared Memory Operations */
+
+#define __NR_mmap2                               80
+__SYSCALL( 80, xtensa_mmap2, 6)
+#define __NR_munmap                              81
+__SYSCALL( 81, sys_munmap, 2)
+#define __NR_mprotect                            82
+__SYSCALL( 82, sys_mprotect, 3)
+#define __NR_brk                                 83
+__SYSCALL( 83, sys_brk, 1)
+#define __NR_mlock                               84
+__SYSCALL( 84, sys_mlock, 2)
+#define __NR_munlock                             85
+__SYSCALL( 85, sys_munlock, 2)
+#define __NR_mlockall                            86
+__SYSCALL( 86, sys_mlockall, 1)
+#define __NR_munlockall                          87
+__SYSCALL( 87, sys_munlockall, 0)
+#define __NR_mremap                              88
+__SYSCALL( 88, sys_mremap, 4)
+#define __NR_msync                               89
+__SYSCALL( 89, sys_msync, 3)
+#define __NR_mincore                             90
+__SYSCALL( 90, sys_mincore, 3)
+#define __NR_madvise                             91
+__SYSCALL( 91, sys_madvise, 3)
+#define __NR_shmget                              92
+__SYSCALL( 92, sys_shmget, 4)
+#define __NR_shmat                               93
+__SYSCALL( 93, xtensa_shmat, 4)
+#define __NR_shmctl                              94
+__SYSCALL( 94, sys_shmctl, 4)
+#define __NR_shmdt                               95
+__SYSCALL( 95, sys_shmdt, 4)
+
+/* Socket Operations */
+
+#define __NR_socket                              96
+__SYSCALL( 96, sys_socket, 3)
+#define __NR_setsockopt                          97
+__SYSCALL( 97, sys_setsockopt, 5)
+#define __NR_getsockopt                          98
+__SYSCALL( 98, sys_getsockopt, 5)
+#define __NR_shutdown                            99
+__SYSCALL( 99, sys_shutdown, 2)
+
+#define __NR_bind                               100
+__SYSCALL(100, sys_bind, 3)
+#define __NR_connect                            101
+__SYSCALL(101, sys_connect, 3)
+#define __NR_listen                             102
+__SYSCALL(102, sys_listen, 2)
+#define __NR_accept                             103
+__SYSCALL(103, sys_accept, 3)
+
+#define __NR_getsockname                        104
+__SYSCALL(104, sys_getsockname, 3)
+#define __NR_getpeername                        105
+__SYSCALL(105, sys_getpeername, 3)
+#define __NR_sendmsg                            106
+__SYSCALL(106, sys_sendmsg, 3)
+#define __NR_recvmsg                            107
+__SYSCALL(107, sys_recvmsg, 3)
+#define __NR_send                               108
+__SYSCALL(108, sys_send, 4)
+#define __NR_recv                               109
+__SYSCALL(109, sys_recv, 4)
+#define __NR_sendto                             110
+__SYSCALL(110, sys_sendto, 6)
+#define __NR_recvfrom                           111
+__SYSCALL(111, sys_recvfrom, 6)
+
+#define __NR_socketpair                         112
+__SYSCALL(112, sys_socketpair, 4)
+#define __NR_sendfile                           113
+__SYSCALL(113, sys_sendfile, 4)
+#define __NR_sendfile64                         114
+__SYSCALL(114, sys_sendfile64, 4)
+#define __NR_available115                       115
+__SYSCALL(115, sys_ni_syscall, 0)
+
+/* Process Operations */
+
+#define __NR_clone                              116
+__SYSCALL(116, xtensa_clone, 5)
+#define __NR_execve                             117
+__SYSCALL(117, xtensa_execve, 3)
+#define __NR_exit                               118
+__SYSCALL(118, sys_exit, 1)
+#define __NR_exit_group                         119
+__SYSCALL(119, sys_exit_group, 1)
+#define __NR_getpid                             120
+__SYSCALL(120, sys_getpid, 0)
+#define __NR_wait4                              121
+__SYSCALL(121, sys_wait4, 4)
+#define __NR_waitid                             122
+__SYSCALL(122, sys_waitid, 5)
+#define __NR_kill                               123
+__SYSCALL(123, sys_kill, 2)
+#define __NR_tkill                              124
+__SYSCALL(124, sys_tkill, 2)
+#define __NR_tgkill                             125
+__SYSCALL(125, sys_tgkill, 3)
+#define __NR_set_tid_address                    126
+__SYSCALL(126, sys_set_tid_address, 1)
+#define __NR_gettid                             127
+__SYSCALL(127, sys_gettid, 0)
+#define __NR_setsid                             128
+__SYSCALL(128, sys_setsid, 0)
+#define __NR_getsid                             129
+__SYSCALL(129, sys_getsid, 1)
+#define __NR_prctl                              130
+__SYSCALL(130, sys_prctl, 5)
+#define __NR_personality                        131
+__SYSCALL(131, sys_personality, 1)
+#define __NR_getpriority                        132
+__SYSCALL(132, sys_getpriority, 2)
+#define __NR_setpriority                        133
+__SYSCALL(133, sys_setpriority, 3)
+#define __NR_setitimer                          134
+__SYSCALL(134, sys_setitimer, 3)
+#define __NR_getitimer                          135
+__SYSCALL(135, sys_getitimer, 2)
+#define __NR_setuid                             136
+__SYSCALL(136, sys_setuid, 1)
+#define __NR_getuid                             137
+__SYSCALL(137, sys_getuid, 0)
+#define __NR_setgid                             138
+__SYSCALL(138, sys_setgid, 1)
+#define __NR_getgid                             139
+__SYSCALL(139, sys_getgid, 0)
+#define __NR_geteuid                            140
+__SYSCALL(140, sys_geteuid, 0)
+#define __NR_getegid                            141
+__SYSCALL(141, sys_getegid, 0)
+#define __NR_setreuid                           142
+__SYSCALL(142, sys_setreuid, 2)
+#define __NR_setregid                           143
+__SYSCALL(143, sys_setregid, 2)
+#define __NR_setresuid                          144
+__SYSCALL(144, sys_setresuid, 3)
+#define __NR_getresuid                          145
+__SYSCALL(145, sys_getresuid, 3)
+#define __NR_setresgid                          146
+__SYSCALL(146, sys_setresgid, 3)
+#define __NR_getresgid                          147
+__SYSCALL(147, sys_getresgid, 3)
+#define __NR_setpgid                            148
+__SYSCALL(148, sys_setpgid, 2)
+#define __NR_getpgid                            149
+__SYSCALL(149, sys_getpgid, 1)
+#define __NR_getppid                            150
+__SYSCALL(150, sys_getppid, 0)
+#define __NR_getpgrp                            151
+__SYSCALL(151, sys_getpgrp, 0)
+
+#define __NR_reserved152                        152     /* set_thread_area */
+__SYSCALL(152, sys_ni_syscall, 0)
+#define __NR_reserved153                        153     /* get_thread_area */
+__SYSCALL(153, sys_ni_syscall, 0)
+#define __NR_times                              154
+__SYSCALL(154, sys_times, 1)
+#define __NR_acct                               155
+__SYSCALL(155, sys_acct, 1)
+#define __NR_sched_setaffinity                  156
+__SYSCALL(156, sys_sched_setaffinity, 3)
+#define __NR_sched_getaffinity                  157
+__SYSCALL(157, sys_sched_getaffinity, 3)
+#define __NR_capget                             158
+__SYSCALL(158, sys_capget, 2)
+#define __NR_capset                             159
+__SYSCALL(159, sys_capset, 2)
+#define __NR_ptrace                             160
+__SYSCALL(160, sys_ptrace, 4)
+#define __NR_semtimedop                         161
+__SYSCALL(161, sys_semtimedop, 5)
+#define __NR_semget                             162
+__SYSCALL(162, sys_semget, 4)
+#define __NR_semop                              163
+__SYSCALL(163, sys_semop, 4)
+#define __NR_semctl                             164
+__SYSCALL(164, sys_semctl, 4)
+#define __NR_available165                       165
+__SYSCALL(165, sys_ni_syscall, 0)
+#define __NR_msgget                             166
+__SYSCALL(166, sys_msgget, 4)
+#define __NR_msgsnd                             167
+__SYSCALL(167, sys_msgsnd, 4)
+#define __NR_msgrcv                             168
+__SYSCALL(168, sys_msgrcv, 4)
+#define __NR_msgctl                             169
+__SYSCALL(169, sys_msgctl, 4)
+#define __NR_available170                       170
+__SYSCALL(170, sys_ni_syscall, 0)
+#define __NR_available171                       171
+__SYSCALL(171, sys_ni_syscall, 0)
+
+/* File System */
+
+#define __NR_mount                              172
+__SYSCALL(172, sys_mount, 5)
+#define __NR_swapon                             173
+__SYSCALL(173, sys_swapon, 2)
+#define __NR_chroot                             174
+__SYSCALL(174, sys_chroot, 1)
+#define __NR_pivot_root                         175
+__SYSCALL(175, sys_pivot_root, 2)
+#define __NR_umount                             176
+__SYSCALL(176, sys_umount, 2)
+#define __NR_swapoff                            177
+__SYSCALL(177, sys_swapoff, 1)
+#define __NR_sync                               178
+__SYSCALL(178, sys_sync, 0)
+#define __NR_available179                       179
+__SYSCALL(179, sys_ni_syscall, 0)
+#define __NR_setfsuid                           180
+__SYSCALL(180, sys_setfsuid, 1)
+#define __NR_setfsgid                           181
+__SYSCALL(181, sys_setfsgid, 1)
+#define __NR_sysfs                              182
+__SYSCALL(182, sys_sysfs, 3)
+#define __NR_ustat                              183
+__SYSCALL(183, sys_ustat, 2)
+#define __NR_statfs                             184
+__SYSCALL(184, sys_statfs, 2)
+#define __NR_fstatfs                            185
+__SYSCALL(185, sys_fstatfs, 2)
+#define __NR_statfs64                           186
+__SYSCALL(186, sys_statfs64, 3)
+#define __NR_fstatfs64                          187
+__SYSCALL(187, sys_fstatfs64, 3)
+
+/* System */
+
+#define __NR_setrlimit                          188
+__SYSCALL(188, sys_setrlimit, 2)
+#define __NR_getrlimit                          189
+__SYSCALL(189, sys_getrlimit, 2)
+#define __NR_getrusage                          190
+__SYSCALL(190, sys_getrusage, 2)
+#define __NR_futex                              191
+__SYSCALL(191, sys_futex, 5)
+#define __NR_gettimeofday                       192
+__SYSCALL(192, sys_gettimeofday, 2)
+#define __NR_settimeofday                       193
+__SYSCALL(193, sys_settimeofday, 2)
+#define __NR_adjtimex                           194
+__SYSCALL(194, sys_adjtimex, 1)
+#define __NR_nanosleep                          195
+__SYSCALL(195, sys_nanosleep, 2)
+#define __NR_getgroups                          196
+__SYSCALL(196, sys_getgroups, 2)
+#define __NR_setgroups                          197
+__SYSCALL(197, sys_setgroups, 2)
+#define __NR_sethostname                        198
+__SYSCALL(198, sys_sethostname, 2)
+#define __NR_setdomainname                      199
+__SYSCALL(199, sys_setdomainname, 2)
+#define __NR_syslog                             200
+__SYSCALL(200, sys_syslog, 3)
+#define __NR_vhangup                            201
+__SYSCALL(201, sys_vhangup, 0)
+#define __NR_uselib                             202
+__SYSCALL(202, sys_uselib, 1)
+#define __NR_reboot                             203
+__SYSCALL(203, sys_reboot, 3)
+#define __NR_quotactl                           204
+__SYSCALL(204, sys_quotactl, 4)
+#define __NR_nfsservctl                         205
+__SYSCALL(205, sys_nfsservctl, 3)
+#define __NR__sysctl                            206
+__SYSCALL(206, sys_sysctl, 1)
+#define __NR_bdflush                            207
+__SYSCALL(207, sys_bdflush, 2)
+#define __NR_uname                              208
+__SYSCALL(208, sys_newuname, 1)
+#define __NR_sysinfo                            209
+__SYSCALL(209, sys_sysinfo, 1)
+#define __NR_init_module                        210
+__SYSCALL(210, sys_init_module, 2)
+#define __NR_delete_module                      211
+__SYSCALL(211, sys_delete_module, 1)
+
+#define __NR_sched_setparam                     212
+__SYSCALL(212, sys_sched_setparam, 2)
+#define __NR_sched_getparam                     213
+__SYSCALL(213, sys_sched_getparam, 2)
+#define __NR_sched_setscheduler                 214
+__SYSCALL(214, sys_sched_setscheduler, 3)
+#define __NR_sched_getscheduler                 215
+__SYSCALL(215, sys_sched_getscheduler, 1)
+#define __NR_sched_get_priority_max             216
+__SYSCALL(216, sys_sched_get_priority_max, 1)
+#define __NR_sched_get_priority_min             217
+__SYSCALL(217, sys_sched_get_priority_min, 1)
+#define __NR_sched_rr_get_interval              218
+__SYSCALL(218, sys_sched_rr_get_interval, 2)
+#define __NR_sched_yield                        219
+__SYSCALL(219, sys_sched_yield, 0)
+#define __NR_available222                       222
+__SYSCALL(222, sys_ni_syscall, 0)
+
+/* Signal Handling */
+
+#define __NR_restart_syscall                    223
+__SYSCALL(223, sys_restart_syscall, 0)
+#define __NR_sigaltstack                        224
+__SYSCALL(224, xtensa_sigaltstack, 2)
+#define __NR_rt_sigreturn                       225
+__SYSCALL(225, xtensa_rt_sigreturn, 1)
+#define __NR_rt_sigaction                       226
+__SYSCALL(226, sys_rt_sigaction, 4)
+#define __NR_rt_sigprocmask                     227
+__SYSCALL(227, sys_rt_sigprocmask, 4)
+#define __NR_rt_sigpending                      228
+__SYSCALL(228, sys_rt_sigpending, 2)
+#define __NR_rt_sigtimedwait                    229
+__SYSCALL(229, sys_rt_sigtimedwait, 4)
+#define __NR_rt_sigqueueinfo                    230
+__SYSCALL(230, sys_rt_sigqueueinfo, 3)
+#define __NR_rt_sigsuspend                      231
+__SYSCALL(231, xtensa_rt_sigsuspend, 2)
+
+/* Message */
+
+#define __NR_mq_open                            232
+__SYSCALL(232, sys_mq_open, 4)
+#define __NR_mq_unlink                          233
+__SYSCALL(233, sys_mq_unlink, 1)
+#define __NR_mq_timedsend                       234
+__SYSCALL(234, sys_mq_timedsend, 5)
+#define __NR_mq_timedreceive                    235
+__SYSCALL(235, sys_mq_timedreceive, 5)
+#define __NR_mq_notify                          236
+__SYSCALL(236, sys_mq_notify, 2)
+#define __NR_mq_getsetattr                      237
+__SYSCALL(237, sys_mq_getsetattr, 3)
+#define __NR_available238                       238
+__SYSCALL(238, sys_ni_syscall, 0)
+
+/* IO */
+
+#define __NR_io_setup                           239
+__SYSCALL(239, sys_io_setup, 2)
+#define __NR_io_destroy                         240
+__SYSCALL(240, sys_io_destroy, 1)
+#define __NR_io_submit                          241
+__SYSCALL(241, sys_io_submit, 3)
+#define __NR_io_getevents                       242
+__SYSCALL(242, sys_io_getevents, 5)
+#define __NR_io_cancel                          243
+__SYSCALL(243, sys_io_cancel, 3)
+#define __NR_clock_settime                      244
+__SYSCALL(244, sys_clock_settime, 2)
+#define __NR_clock_gettime                      245
+__SYSCALL(245, sys_clock_gettime, 2)
+#define __NR_clock_getres                       246
+__SYSCALL(246, sys_clock_getres, 2)
+#define __NR_clock_nanosleep                    247
+__SYSCALL(247, sys_clock_nanosleep, 4)
+
+/* Timer */
+
+#define __NR_timer_create                       248
+__SYSCALL(248, sys_timer_create, 3)
+#define __NR_timer_delete                       249
+__SYSCALL(249, sys_timer_delete, 1)
+#define __NR_timer_settime                      250
+__SYSCALL(250, sys_timer_settime, 4)
+#define __NR_timer_gettime                      251
+__SYSCALL(251, sys_timer_gettime, 2)
+#define __NR_timer_getoverrun                   252
+__SYSCALL(252, sys_timer_getoverrun, 1)
+
+/* System */
+
+#define __NR_reserved244                        253
+__SYSCALL(253, sys_ni_syscall, 0)
+#define __NR_lookup_dcookie                     254
+__SYSCALL(254, sys_lookup_dcookie, 4)
+#define __NR_available255                       255
+__SYSCALL(255, sys_ni_syscall, 0)
+#define __NR_add_key                            256
+__SYSCALL(256, sys_add_key, 5)
+#define __NR_request_key                        257
+__SYSCALL(257, sys_request_key, 5)
+#define __NR_keyctl                             258
+__SYSCALL(258, sys_keyctl, 5)
+#define __NR_available259                       259
+__SYSCALL(259, sys_ni_syscall, 0)
+
+
+#define __NR_readahead                          260
+__SYSCALL(260, sys_readahead, 5)
+#define __NR_remap_file_pages                   261
+__SYSCALL(261, sys_remap_file_pages, 5)
+#define __NR_migrate_pages                      262
+__SYSCALL(262, sys_migrate_pages, 0)
+#define __NR_mbind                              263
+__SYSCALL(263, sys_mbind, 6)
+#define __NR_get_mempolicy                      264
+__SYSCALL(264, sys_get_mempolicy, 5)
+#define __NR_set_mempolicy                      265
+__SYSCALL(265, sys_set_mempolicy, 3)
+#define __NR_unshare                            266
+__SYSCALL(266, sys_unshare, 1)
+#define __NR_move_pages                         267
+__SYSCALL(267, sys_move_pages, 0)
+#define __NR_splice                             268
+__SYSCALL(268, sys_splice, 0)
+#define __NR_tee                                269
+__SYSCALL(269, sys_tee, 0)
+#define __NR_vmsplice                           270
+__SYSCALL(270, sys_vmsplice, 0)
+#define __NR_available271                       271
+__SYSCALL(271, sys_ni_syscall, 0)
+
+#define __NR_pselect6                           272
+__SYSCALL(272, sys_pselect6, 0)
+#define __NR_ppoll                              273
+__SYSCALL(273, sys_ppoll, 0)
+#define __NR_epoll_pwait                        274
+__SYSCALL(274, sys_epoll_pwait, 0)
+#define __NR_available275                       275
+__SYSCALL(275, sys_ni_syscall, 0)
+
+#define __NR_inotify_init                       276
+__SYSCALL(276, sys_inotify_init, 0)
+#define __NR_inotify_add_watch                  277
+__SYSCALL(277, sys_inotify_add_watch, 3)
+#define __NR_inotify_rm_watch                   278
+__SYSCALL(278, sys_inotify_rm_watch, 2)
+#define __NR_available279                       279
+__SYSCALL(279, sys_ni_syscall, 0)
+
+#define __NR_getcpu                             280
+__SYSCALL(280, sys_getcpu, 0)
+#define __NR_kexec_load                         281
+__SYSCALL(281, sys_ni_syscall, 0)
+
+#define __NR_ioprio_set                         282
+__SYSCALL(282, sys_ioprio_set, 2)
+#define __NR_ioprio_get                         283
+__SYSCALL(283, sys_ioprio_get, 3)
+
+#define __NR_set_robust_list                    284
+__SYSCALL(284, sys_set_robust_list, 3)
+#define __NR_get_robust_list                    285
+__SYSCALL(285, sys_get_robust_list, 3)
+#define __NR_reserved286                        286     /* sync_file_rangeX */
+__SYSCALL(286, sys_ni_syscall, 3)
+#define __NR_available287                       287
+__SYSCALL(287, sys_faccessat, 0)
+
+/* Relative File Operations */
+
+#define __NR_openat                             288
+__SYSCALL(288, sys_openat, 4)
+#define __NR_mkdirat                            289
+__SYSCALL(289, sys_mkdirat, 3)
+#define __NR_mknodat                            290
+__SYSCALL(290, sys_mknodat, 4)
+#define __NR_unlinkat                           291
+__SYSCALL(291, sys_unlinkat, 3)
+#define __NR_renameat                           292
+__SYSCALL(292, sys_renameat, 4)
+#define __NR_linkat                             293
+__SYSCALL(293, sys_linkat, 5)
+#define __NR_symlinkat                          294
+__SYSCALL(294, sys_symlinkat, 3)
+#define __NR_readlinkat                         295
+__SYSCALL(295, sys_readlinkat, 4)
+#define __NR_utimensat                          296
+__SYSCALL(296, sys_utimensat, 0)
+#define __NR_fchownat                           297
+__SYSCALL(297, sys_fchownat, 5)
+#define __NR_futimesat                          298
+__SYSCALL(298, sys_futimesat, 4)
+#define __NR_fstatat64                          299
+__SYSCALL(299, sys_fstatat64, 0)
+#define __NR_fchmodat                           300
+__SYSCALL(300, sys_fchmodat, 4)
+#define __NR_faccessat                          301
+__SYSCALL(301, sys_faccessat, 4)
+#define __NR_available302                       302
+__SYSCALL(302, sys_ni_syscall, 0)
+#define __NR_available303                       303
+__SYSCALL(303, sys_ni_syscall, 0)
+
+#define __NR_signalfd                           304
+__SYSCALL(304, sys_signalfd, 3)
+/*  305 was __NR_timerfd  */
+__SYSCALL(305, sys_ni_syscall, 0)
+#define __NR_eventfd                            306
+__SYSCALL(306, sys_eventfd, 1)
+
+#define __NR_syscall_count                      307
+
+/*
+ * sysxtensa syscall handler
+ *
+ * int sysxtensa (SYS_XTENSA_ATOMIC_SET,     ptr, val,    unused);
+ * int sysxtensa (SYS_XTENSA_ATOMIC_ADD,     ptr, val,    unused);
+ * int sysxtensa (SYS_XTENSA_ATOMIC_EXG_ADD, ptr, val,    unused);
+ * int sysxtensa (SYS_XTENSA_ATOMIC_CMP_SWP, ptr, oldval, newval);
+ *        a2            a6                   a3    a4      a5
+ */
+
+#define SYS_XTENSA_RESERVED               0     /* don't use this */
+#define SYS_XTENSA_ATOMIC_SET             1     /* set variable */
+#define SYS_XTENSA_ATOMIC_EXG_ADD         2     /* exchange memory and add */
+#define SYS_XTENSA_ATOMIC_ADD             3     /* add to memory */
+#define SYS_XTENSA_ATOMIC_CMP_SWP         4     /* compare and swap */
+
+#define SYS_XTENSA_COUNT                  5     /* count */
+
+#ifdef __KERNEL__
+
+/*
+ * "Conditional" syscalls
+ *
+ * What we want is __attribute__((weak,alias("sys_ni_syscall"))),
+ * but it doesn't work on all toolchains, so we just do it by hand
+ */
+#define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall");
+
+#define __ARCH_WANT_STAT64
+#define __ARCH_WANT_SYS_UTIME
+#define __ARCH_WANT_SYS_LLSEEK
+#define __ARCH_WANT_SYS_RT_SIGACTION
+#define __ARCH_WANT_SYS_RT_SIGSUSPEND
+#define __ARCH_WANT_SYS_GETPGRP
+
+/* 
+ * Ignore legacy system calls in the checksyscalls.sh script
+ */
+
+#define __IGNORE_fork                           /* use clone */
+#define __IGNORE_time
+#define __IGNORE_alarm                          /* use setitimer */
+#define __IGNORE_pause
+#define __IGNORE_mmap                           /* use mmap2 */
+#define __IGNORE_vfork                          /* use clone */
+#define __IGNORE_fadvise64                      /* use fadvise64_64 */
+
+#endif  /* __KERNEL__ */
+#endif  /* _XTENSA_UNISTD_H */
diff --git a/arch/xtensa/include/asm/user.h b/arch/xtensa/include/asm/user.h
new file mode 100644
index 000000000000..2c3ed23354a8
--- /dev/null
+++ b/arch/xtensa/include/asm/user.h
@@ -0,0 +1,20 @@
+/*
+ * include/asm-xtensa/user.h
+ *
+ * Xtensa Processor version.
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_USER_H
+#define _XTENSA_USER_H
+
+/* This file usually defines a 'struct user' structure. However, it it only
+ * used for a.out file, which are not supported on Xtensa.
+ */
+
+#endif  /* _XTENSA_USER_H */
diff --git a/arch/xtensa/include/asm/vga.h b/arch/xtensa/include/asm/vga.h
new file mode 100644
index 000000000000..1fd8cab3a297
--- /dev/null
+++ b/arch/xtensa/include/asm/vga.h
@@ -0,0 +1,19 @@
+/*
+ * include/asm-xtensa/vga.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_VGA_H
+#define _XTENSA_VGA_H
+
+#define VGA_MAP_MEM(x,s) (unsigned long)phys_to_virt(x)
+
+#define vga_readb(x)    (*(x))
+#define vga_writeb(x,y) (*(y) = (x))
+
+#endif
diff --git a/arch/xtensa/include/asm/xor.h b/arch/xtensa/include/asm/xor.h
new file mode 100644
index 000000000000..e7b1f083991d
--- /dev/null
+++ b/arch/xtensa/include/asm/xor.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/xor.h
+ *
+ * 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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_XOR_H
+#define _XTENSA_XOR_H
+
+#include <asm-generic/xor.h>
+
+#endif