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