[PATCH] CRIS update: new subarchitecture v32

New CRIS sub architecture named v32.

From: Dave Jones <davej@redhat.com>

	Fix swapped kmalloc args

Signed-off-by: Mikael Starvik <starvik@axis.com>
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

9 files changed, 716 insertions, 0 deletions

diff --git a/arch/cris/arch-v32/boot/Makefile b/arch/cris/arch-v32/boot/Makefile
new file mode 100644
index 000000000000..26f293ab9617
--- /dev/null
+++ b/arch/cris/arch-v32/boot/Makefile
@@ -0,0 +1,14 @@
+#
+# arch/cris/arch-v32/boot/Makefile
+#
+target = $(target_boot_dir)
+src    = $(src_boot_dir)
+
+zImage: compressed/vmlinuz
+
+compressed/vmlinuz: $(objtree)/vmlinux
+        @$(MAKE) -f $(src)/compressed/Makefile $(objtree)/vmlinuz
+
+clean:
+        rm -f zImage tools/build compressed/vmlinux.out
+        @$(MAKE) -f $(src)/compressed/Makefile clean
diff --git a/arch/cris/arch-v32/boot/compressed/Makefile b/arch/cris/arch-v32/boot/compressed/Makefile
new file mode 100644
index 000000000000..9f77eda914ba
--- /dev/null
+++ b/arch/cris/arch-v32/boot/compressed/Makefile
@@ -0,0 +1,41 @@
+#
+# lx25/arch/cris/arch-v32/boot/compressed/Makefile
+#
+# create a compressed vmlinux image from the original vmlinux files and romfs
+#
+
+target = $(target_compressed_dir)
+src    = $(src_compressed_dir)
+
+CC = gcc-cris -mlinux -march=v32 -I $(TOPDIR)/include
+CFLAGS = -O2
+LD = gcc-cris -mlinux -march=v32 -nostdlib
+OBJCOPY = objcopy-cris
+OBJCOPYFLAGS = -O binary --remove-section=.bss
+OBJECTS = $(target)/head.o $(target)/misc.o
+
+# files to compress
+SYSTEM = $(objtree)/vmlinux.bin
+
+all: vmlinuz
+
+$(target)/decompress.bin: $(OBJECTS)
+        $(LD) -T $(src)/decompress.ld -o $(target)/decompress.o $(OBJECTS)
+        $(OBJCOPY) $(OBJCOPYFLAGS) $(target)/decompress.o $(target)/decompress.bin
+
+$(objtree)/vmlinuz: $(target) piggy.img $(target)/decompress.bin
+        cat $(target)/decompress.bin piggy.img > $(objtree)/vmlinuz
+        rm -f piggy.img
+        cp $(objtree)/vmlinuz $(src)
+
+$(target)/head.o: $(src)/head.S
+        $(CC) -D__ASSEMBLY__ -c $< -o $@
+
+# gzip the kernel image
+
+piggy.img: $(SYSTEM)
+        cat $(SYSTEM) | gzip -f -9 > piggy.img
+
+clean:
+        rm -f piggy.img $(objtree)/vmlinuz vmlinuz.o decompress.o decompress.bin $(OBJECTS)
+
diff --git a/arch/cris/arch-v32/boot/compressed/README b/arch/cris/arch-v32/boot/compressed/README
new file mode 100644
index 000000000000..e33691d15c57
--- /dev/null
+++ b/arch/cris/arch-v32/boot/compressed/README
@@ -0,0 +1,25 @@
+Creation of the self-extracting compressed kernel image (vmlinuz)
+-----------------------------------------------------------------
+$Id: README,v 1.1 2003/08/21 09:37:03 johana Exp $
+
+This can be slightly confusing because it's a process with many steps.
+
+The kernel object built by the arch/etrax100/Makefile, vmlinux, is split
+by that makefile into text and data binary files, vmlinux.text and
+vmlinux.data.
+
+Those files together with a ROM filesystem can be catted together and
+burned into a flash or executed directly at the DRAM origin.
+
+They can also be catted together and compressed with gzip, which is what
+happens in this makefile. Together they make up piggy.img.
+
+The decompressor is built into the file decompress.o. It is turned into
+the binary file decompress.bin, which is catted together with piggy.img
+into the file vmlinuz. It can be executed in an arbitrary place in flash.
+
+Be careful - it assumes some things about free locations in DRAM. It
+assumes the DRAM starts at 0x40000000 and that it is at least 8 MB,
+so it puts its code at 0x40700000, and initial stack at 0x40800000.
+
+-Bjorn
diff --git a/arch/cris/arch-v32/boot/compressed/decompress.ld b/arch/cris/arch-v32/boot/compressed/decompress.ld
new file mode 100644
index 000000000000..3c837feca3ac
--- /dev/null
+++ b/arch/cris/arch-v32/boot/compressed/decompress.ld
@@ -0,0 +1,30 @@
+/*#OUTPUT_FORMAT(elf32-us-cris) */
+OUTPUT_ARCH (crisv32)
+
+MEMORY
+        {
+        dram : ORIGIN = 0x40700000,
+               LENGTH = 0x00100000
+        }
+
+SECTIONS
+{
+        .text :
+        {
+                _stext = . ;
+                *(.text)
+                *(.rodata)
+                *(.rodata.*)
+                _etext = . ;
+        } > dram
+        .data :
+        {
+                *(.data)
+                _edata = . ;
+        } > dram
+        .bss :
+        {
+                *(.bss)
+                _end = ALIGN( 0x10 ) ;
+        } > dram
+}
diff --git a/arch/cris/arch-v32/boot/compressed/head.S b/arch/cris/arch-v32/boot/compressed/head.S
new file mode 100644
index 000000000000..0c55b83b8287
--- /dev/null
+++ b/arch/cris/arch-v32/boot/compressed/head.S
@@ -0,0 +1,193 @@
+/*
+ *  Code that sets up the DRAM registers, calls the
+ *  decompressor to unpack the piggybacked kernel, and jumps.
+ *
+ *  Copyright (C) 1999 - 2003, Axis Communications AB
+ */
+
+#include <linux/config.h>
+#define ASSEMBLER_MACROS_ONLY
+#include <asm/arch/hwregs/asm/reg_map_asm.h>
+#include <asm/arch/hwregs/asm/gio_defs_asm.h>
+#include <asm/arch/hwregs/asm/config_defs_asm.h>
+
+#define RAM_INIT_MAGIC 0x56902387
+#define COMMAND_LINE_MAGIC 0x87109563
+
+        ;; Exported symbols
+
+        .globl  input_data
+
+        .text
+start:
+        di
+
+        ;; Start clocks for used blocks.
+        move.d REG_ADDR(config, regi_config, rw_clk_ctrl), $r1
+        move.d [$r1], $r0
+        or.d   REG_STATE(config, rw_clk_ctrl, cpu, yes) | \
+               REG_STATE(config, rw_clk_ctrl, bif, yes) | \
+               REG_STATE(config, rw_clk_ctrl, fix_io, yes), $r0
+        move.d $r0, [$r1]
+
+        ;; If booting from NAND flash we first have to copy some
+        ;; data from NAND flash to internal RAM to get the code
+        ;; that initializes the SDRAM. Lets copy 20 KB. This
+        ;; code executes at 0x38010000 if booting from NAND and
+        ;; we are guaranted that at least 0x200 bytes are good so
+        ;; lets start from there. The first 8192 bytes in the nand
+        ;; flash is spliced with zeroes and is thus 16384 bytes.
+        move.d 0x38010200, $r10
+        move.d 0x14200, $r11    ; Start offset in NAND flash 0x10200 + 16384
+        move.d 0x5000, $r12     ; Length of copy
+
+        ;; Before this code the tools add a partitiontable so the PC
+        ;; has an offset from the linked address.
+offset1:
+        lapcq  ., $r13          ; get PC
+        add.d   first_copy_complete-offset1, $r13
+
+#include "../../lib/nand_init.S"
+
+first_copy_complete:
+        ;; Initialze the DRAM registers.
+        cmp.d   RAM_INIT_MAGIC, $r8     ; Already initialized?
+        beq     dram_init_finished
+        nop
+
+#include "../../lib/dram_init.S"
+
+dram_init_finished:
+        lapcq  ., $r13          ; get PC
+        add.d   second_copy_complete-dram_init_finished, $r13
+
+        move.d REG_ADDR(config, regi_config, r_bootsel), $r0
+        move.d [$r0], $r0
+        and.d  REG_MASK(config, r_bootsel, boot_mode), $r0
+        cmp.d  REG_STATE(config, r_bootsel, boot_mode, nand), $r0
+        bne second_copy_complete ; No NAND boot
+        nop
+
+        ;; Copy 2MB from NAND flash to SDRAM (at 2-4MB into the SDRAM)
+        move.d 0x40204000, $r10
+        move.d 0x8000, $r11
+        move.d 0x200000, $r12
+        ba copy_nand_to_ram
+        nop
+second_copy_complete:
+
+        ;; Initiate the PA port.
+        move.d  CONFIG_ETRAX_DEF_GIO_PA_OUT, $r0
+        move.d  REG_ADDR(gio, regi_gio, rw_pa_dout), $r1
+        move.d  $r0, [$r1]
+
+        move.d  CONFIG_ETRAX_DEF_GIO_PA_OE, $r0
+        move.d  REG_ADDR(gio, regi_gio, rw_pa_oe), $r1
+        move.d  $r0, [$r1]
+
+        ;; Setup the stack to a suitably high address.
+        ;; We assume 8 MB is the minimum DRAM and put
+        ;; the SP at the top for now.
+
+        move.d  0x40800000, $sp
+
+        ;; Figure out where the compressed piggyback image is
+        ;; in the flash (since we wont try to copy it to DRAM
+        ;; before unpacking). It is at _edata, but in flash.
+        ;; Use (_edata - herami) as offset to the current PC.
+
+        move.d REG_ADDR(config, regi_config, r_bootsel), $r0
+        move.d [$r0], $r0
+        and.d  REG_MASK(config, r_bootsel, boot_mode), $r0
+        cmp.d  REG_STATE(config, r_bootsel, boot_mode, nand), $r0
+        beq hereami2
+        nop
+hereami:
+        lapcq   ., $r5          ; get PC
+        and.d   0x7fffffff, $r5 ; strip any non-cache bit
+        move.d  $r5, $r0        ; save for later - flash address of 'herami'
+        add.d   _edata, $r5
+        sub.d   hereami, $r5    ; r5 = flash address of '_edata'
+        move.d  hereami, $r1    ; destination
+        ba 2f
+        nop
+hereami2:
+        lapcq   ., $r5          ; get PC
+        and.d   0x00ffffff, $r5 ; strip any non-cache bit
+        move.d  $r5, $r6
+        or.d    0x40200000, $r6
+        move.d  $r6, $r0        ; save for later - flash address of 'herami'
+        add.d   _edata, $r5
+        sub.d   hereami2, $r5   ; r5 = flash address of '_edata'
+        add.d   0x40200000, $r5
+        move.d  hereami2, $r1   ; destination
+2:
+        ;; Copy text+data to DRAM
+
+        move.d  _edata, $r2     ; end destination
+1:      move.w  [$r0+], $r3
+        move.w  $r3, [$r1+]
+        cmp.d   $r2, $r1
+        bcs     1b
+        nop
+
+        move.d  input_data, $r0 ; for the decompressor
+        move.d  $r5, [$r0]      ; for the decompressor
+
+        ;; Clear the decompressors BSS (between _edata and _end)
+
+        moveq   0, $r0
+        move.d  _edata, $r1
+        move.d  _end, $r2
+1:      move.w  $r0, [$r1+]
+        cmp.d   $r2, $r1
+        bcs     1b
+        nop
+
+        ;;  Save command line magic and address.
+        move.d  _cmd_line_magic, $r12
+        move.d  $r10, [$r12]
+        move.d  _cmd_line_addr, $r12
+        move.d  $r11, [$r12]
+
+        ;; Do the decompression and save compressed size in _inptr
+
+        jsr     decompress_kernel
+        nop
+
+        ;; Restore command line magic and address.
+        move.d  _cmd_line_magic, $r10
+        move.d  [$r10], $r10
+        move.d  _cmd_line_addr, $r11
+        move.d  [$r11], $r11
+
+        ;; Put start address of root partition in r9 so the kernel can use it
+        ;; when mounting from flash
+        move.d  input_data, $r0
+        move.d  [$r0], $r9              ; flash address of compressed kernel
+        move.d  inptr, $r0
+        add.d   [$r0], $r9              ; size of compressed kernel
+        cmp.d   0x40200000, $r9
+        blo     enter_kernel
+        nop
+        sub.d   0x40200000, $r9
+        add.d   0x4000, $r9
+
+enter_kernel:
+        ;; Enter the decompressed kernel
+        move.d  RAM_INIT_MAGIC, $r8     ; Tell kernel that DRAM is initialized
+        jump    0x40004000      ; kernel is linked to this address
+        nop
+
+        .data
+
+input_data:
+        .dword  0               ; used by the decompressor
+_cmd_line_magic:
+        .dword 0
+_cmd_line_addr:
+        .dword 0
+is_nand_boot:
+        .dword  0
+
+#include "../../lib/hw_settings.S"
diff --git a/arch/cris/arch-v32/boot/compressed/misc.c b/arch/cris/arch-v32/boot/compressed/misc.c
new file mode 100644
index 000000000000..54644238ed59
--- /dev/null
+++ b/arch/cris/arch-v32/boot/compressed/misc.c
@@ -0,0 +1,318 @@
+/*
+ * misc.c
+ *
+ * $Id: misc.c,v 1.8 2005/04/24 18:34:29 starvik Exp $
+ *
+ * This is a collection of several routines from gzip-1.0.3
+ * adapted for Linux.
+ *
+ * malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994
+ * puts by Nick Holloway 1993, better puts by Martin Mares 1995
+ * adoptation for Linux/CRIS Axis Communications AB, 1999
+ *
+ */
+
+/* where the piggybacked kernel image expects itself to live.
+ * it is the same address we use when we network load an uncompressed
+ * image into DRAM, and it is the address the kernel is linked to live
+ * at by vmlinux.lds.S
+ */
+
+#define KERNEL_LOAD_ADR 0x40004000
+
+#include <linux/config.h>
+
+#include <linux/types.h>
+#include <asm/arch/hwregs/reg_rdwr.h>
+#include <asm/arch/hwregs/reg_map.h>
+#include <asm/arch/hwregs/ser_defs.h>
+
+/*
+ * gzip declarations
+ */
+
+#define OF(args)  args
+#define STATIC static
+
+void* memset(void* s, int c, size_t n);
+void* memcpy(void* __dest, __const void* __src,
+             size_t __n);
+
+#define memzero(s, n)     memset ((s), 0, (n))
+
+
+typedef unsigned char  uch;
+typedef unsigned short ush;
+typedef unsigned long  ulg;
+
+#define WSIZE 0x8000            /* Window size must be at least 32k, */
+                                /* and a power of two */
+
+static uch *inbuf;           /* input buffer */
+static uch window[WSIZE];    /* Sliding window buffer */
+
+unsigned inptr = 0;     /* index of next byte to be processed in inbuf
+                         * After decompression it will contain the
+                         * compressed size, and head.S will read it.
+                         */
+
+static unsigned outcnt = 0;  /* bytes in output buffer */
+
+/* gzip flag byte */
+#define ASCII_FLAG   0x01 /* bit 0 set: file probably ascii text */
+#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */
+#define EXTRA_FIELD  0x04 /* bit 2 set: extra field present */
+#define ORIG_NAME    0x08 /* bit 3 set: original file name present */
+#define COMMENT      0x10 /* bit 4 set: file comment present */
+#define ENCRYPTED    0x20 /* bit 5 set: file is encrypted */
+#define RESERVED     0xC0 /* bit 6,7:   reserved */
+
+#define get_byte() inbuf[inptr++]
+
+/* Diagnostic functions */
+#ifdef DEBUG
+#  define Assert(cond,msg) {if(!(cond)) error(msg);}
+#  define Trace(x) fprintf x
+#  define Tracev(x) {if (verbose) fprintf x ;}
+#  define Tracevv(x) {if (verbose>1) fprintf x ;}
+#  define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
+#  define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
+#else
+#  define Assert(cond,msg)
+#  define Trace(x)
+#  define Tracev(x)
+#  define Tracevv(x)
+#  define Tracec(c,x)
+#  define Tracecv(c,x)
+#endif
+
+static int  fill_inbuf(void);
+static void flush_window(void);
+static void error(char *m);
+static void gzip_mark(void **);
+static void gzip_release(void **);
+
+extern char *input_data;  /* lives in head.S */
+
+static long bytes_out = 0;
+static uch *output_data;
+static unsigned long output_ptr = 0;
+
+static void *malloc(int size);
+static void free(void *where);
+static void error(char *m);
+static void gzip_mark(void **);
+static void gzip_release(void **);
+
+static void puts(const char *);
+
+/* the "heap" is put directly after the BSS ends, at end */
+
+extern int _end;
+static long free_mem_ptr = (long)&_end;
+
+#include "../../../../../lib/inflate.c"
+
+static void *malloc(int size)
+{
+        void *p;
+
+        if (size <0) error("Malloc error");
+
+        free_mem_ptr = (free_mem_ptr + 3) & ~3; /* Align */
+
+        p = (void *)free_mem_ptr;
+        free_mem_ptr += size;
+
+        return p;
+}
+
+static void free(void *where)
+{       /* Don't care */
+}
+
+static void gzip_mark(void **ptr)
+{
+        *ptr = (void *) free_mem_ptr;
+}
+
+static void gzip_release(void **ptr)
+{
+        free_mem_ptr = (long) *ptr;
+}
+
+/* decompressor info and error messages to serial console */
+
+static inline void
+serout(const char *s, reg_scope_instances regi_ser)
+{
+        reg_ser_rs_stat_din rs;
+        reg_ser_rw_dout dout = {.data = *s};
+
+        do {
+                rs = REG_RD(ser, regi_ser, rs_stat_din);
+        }
+        while (!rs.tr_rdy);/* Wait for tranceiver. */
+
+        REG_WR(ser, regi_ser, rw_dout, dout);
+}
+
+static void
+puts(const char *s)
+{
+#ifndef CONFIG_ETRAX_DEBUG_PORT_NULL
+        while (*s) {
+#ifdef CONFIG_ETRAX_DEBUG_PORT0
+                serout(s, regi_ser0);
+#endif
+#ifdef CONFIG_ETRAX_DEBUG_PORT1
+                serout(s, regi_ser1);
+#endif
+#ifdef CONFIG_ETRAX_DEBUG_PORT2
+                serout(s, regi_ser2);
+#endif
+#ifdef CONFIG_ETRAX_DEBUG_PORT3
+                serout(s, regi_ser3);
+#endif
+                *s++;
+        }
+/* CONFIG_ETRAX_DEBUG_PORT_NULL */
+#endif
+}
+
+void*
+memset(void* s, int c, size_t n)
+{
+        int i;
+        char *ss = (char*)s;
+
+        for (i=0;i<n;i++) ss[i] = c;
+}
+
+void*
+memcpy(void* __dest, __const void* __src,
+                            size_t __n)
+{
+        int i;
+        char *d = (char *)__dest, *s = (char *)__src;
+
+        for (i=0;i<__n;i++) d[i] = s[i];
+}
+
+/* ===========================================================================
+ * Write the output window window[0..outcnt-1] and update crc and bytes_out.
+ * (Used for the decompressed data only.)
+ */
+
+static void
+flush_window()
+{
+    ulg c = crc;         /* temporary variable */
+    unsigned n;
+    uch *in, *out, ch;
+
+    in = window;
+    out = &output_data[output_ptr];
+    for (n = 0; n < outcnt; n++) {
+            ch = *out++ = *in++;
+            c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8);
+    }
+    crc = c;
+    bytes_out += (ulg)outcnt;
+    output_ptr += (ulg)outcnt;
+    outcnt = 0;
+}
+
+static void
+error(char *x)
+{
+        puts("\n\n");
+        puts(x);
+        puts("\n\n -- System halted\n");
+
+        while(1);       /* Halt */
+}
+
+void
+setup_normal_output_buffer()
+{
+        output_data = (char *)KERNEL_LOAD_ADR;
+}
+
+static inline void
+serial_setup(reg_scope_instances regi_ser)
+{
+        reg_ser_rw_xoff xoff;
+        reg_ser_rw_tr_ctrl tr_ctrl;
+        reg_ser_rw_rec_ctrl rec_ctrl;
+        reg_ser_rw_tr_baud_div tr_baud;
+        reg_ser_rw_rec_baud_div rec_baud;
+
+        /* Turn off XOFF. */
+        xoff = REG_RD(ser, regi_ser, rw_xoff);
+
+        xoff.chr = 0;
+        xoff.automatic = regk_ser_no;
+
+        REG_WR(ser, regi_ser, rw_xoff, xoff);
+
+        /* Set baudrate and stopbits. */
+        tr_ctrl = REG_RD(ser, regi_ser, rw_tr_ctrl);
+        rec_ctrl = REG_RD(ser, regi_ser, rw_rec_ctrl);
+        tr_baud = REG_RD(ser, regi_ser, rw_tr_baud_div);
+        rec_baud = REG_RD(ser, regi_ser, rw_rec_baud_div);
+
+        tr_ctrl.stop_bits = 1;  /* 2 stop bits. */
+
+        /*
+         * The baudrate setup is a bit fishy, but in the end the tranceiver is
+         * set to 4800 and the receiver to 115200. The magic value is
+         * 29.493 MHz.
+         */
+        tr_ctrl.base_freq = regk_ser_f29_493;
+        rec_ctrl.base_freq = regk_ser_f29_493;
+        tr_baud.div = (29493000 / 8) / 4800;
+        rec_baud.div = (29493000 / 8) / 115200;
+
+        REG_WR(ser, regi_ser, rw_tr_ctrl, tr_ctrl);
+        REG_WR(ser, regi_ser, rw_tr_baud_div, tr_baud);
+        REG_WR(ser, regi_ser, rw_rec_ctrl, rec_ctrl);
+        REG_WR(ser, regi_ser, rw_rec_baud_div, rec_baud);
+}
+
+void
+decompress_kernel()
+{
+        char revision;
+
+        /* input_data is set in head.S */
+        inbuf = input_data;
+
+#ifdef CONFIG_ETRAX_DEBUG_PORT0
+        serial_setup(regi_ser0);
+#endif
+#ifdef CONFIG_ETRAX_DEBUG_PORT1
+        serial_setup(regi_ser1);
+#endif
+#ifdef CONFIG_ETRAX_DEBUG_PORT2
+        serial_setup(regi_ser2);
+#endif
+#ifdef CONFIG_ETRAX_DEBUG_PORT3
+        serial_setup(regi_ser3);
+#endif
+
+        setup_normal_output_buffer();
+
+        makecrc();
+
+        __asm__ volatile ("move $vr,%0" : "=rm" (revision));
+        if (revision < 32)
+        {
+                puts("You need an ETRAX FS to run Linux 2.6/crisv32.\n");
+                while(1);
+        }
+
+        puts("Uncompressing Linux...\n");
+        gunzip();
+        puts("Done. Now booting the kernel.\n");
+}
diff --git a/arch/cris/arch-v32/boot/rescue/Makefile b/arch/cris/arch-v32/boot/rescue/Makefile
new file mode 100644
index 000000000000..f668a8198724
--- /dev/null
+++ b/arch/cris/arch-v32/boot/rescue/Makefile
@@ -0,0 +1,36 @@
+#
+# Makefile for rescue code
+#
+target = $(target_rescue_dir)
+src    = $(src_rescue_dir)
+
+CC = gcc-cris -mlinux -march=v32 $(LINUXINCLUDE)
+CFLAGS = -O2
+LD = gcc-cris -mlinux -march=v32 -nostdlib
+OBJCOPY = objcopy-cris
+OBJCOPYFLAGS = -O binary --remove-section=.bss
+
+all: $(target)/rescue.bin
+
+rescue: rescue.bin
+        # do nothing
+
+$(target)/rescue.bin: $(target) $(target)/head.o
+        $(LD) -T $(src)/rescue.ld -o $(target)/rescue.o $(target)/head.o
+        $(OBJCOPY) $(OBJCOPYFLAGS) $(target)/rescue.o $(target)/rescue.bin
+        cp -p $(target)/rescue.bin $(objtree)
+
+$(target):
+        mkdir -p $(target)
+
+$(target)/head.o: $(src)/head.S
+        $(CC) -D__ASSEMBLY__ -c $< -o $*.o
+
+clean:
+        rm -f $(target)/*.o $(target)/*.bin
+
+fastdep:
+
+modules:
+
+modules-install:
diff --git a/arch/cris/arch-v32/boot/rescue/head.S b/arch/cris/arch-v32/boot/rescue/head.S
new file mode 100644
index 000000000000..61ede5f30f99
--- /dev/null
+++ b/arch/cris/arch-v32/boot/rescue/head.S
@@ -0,0 +1,39 @@
+/* $Id: head.S,v 1.4 2004/11/01 16:10:28 starvik Exp $
+ *
+ * This used to be the rescue code but now that is handled by the
+ * RedBoot based RFL instead. Nothing to see here, move along.
+ */
+
+#include <linux/config.h>
+#include <asm/arch/hwregs/reg_map_asm.h>
+#include <asm/arch/hwregs/config_defs_asm.h>
+
+        .text
+
+        ;; Start clocks for used blocks.
+        move.d REG_ADDR(config, regi_config, rw_clk_ctrl), $r1
+        move.d [$r1], $r0
+        or.d   REG_STATE(config, rw_clk_ctrl, cpu, yes) | \
+               REG_STATE(config, rw_clk_ctrl, bif, yes) | \
+               REG_STATE(config, rw_clk_ctrl, fix_io, yes), $r0
+        move.d $r0, [$r1]
+
+        ;; Copy 68KB NAND flash to Internal RAM (if NAND boot)
+        move.d 0x38004000, $r10
+        move.d 0x8000, $r11
+        move.d 0x11000, $r12
+        move.d copy_complete, $r13
+        and.d  0x000fffff, $r13
+        or.d   0x38000000, $r13
+
+#include "../../lib/nand_init.S"
+
+        ;; No NAND found
+        move.d  CONFIG_ETRAX_PTABLE_SECTOR, $r10
+        jump    $r10 ; Jump to decompresser
+        nop
+
+copy_complete:
+        move.d  0x38000000 + CONFIG_ETRAX_PTABLE_SECTOR, $r10
+        jump    $r10 ; Jump to decompresser
+        nop
diff --git a/arch/cris/arch-v32/boot/rescue/rescue.ld b/arch/cris/arch-v32/boot/rescue/rescue.ld
new file mode 100644
index 000000000000..42b11aa122b2
--- /dev/null
+++ b/arch/cris/arch-v32/boot/rescue/rescue.ld
@@ -0,0 +1,20 @@
+MEMORY
+        {
+        flash : ORIGIN = 0x00000000,
+                LENGTH = 0x00100000
+        }
+
+SECTIONS
+{
+        .text :
+        {
+                stext = . ;
+                *(.text)
+                etext = . ;
+        } > flash
+        .data :
+        {
+                *(.data)
+                edata = . ;
+        } > flash
+}