[CRIS] Build fixes for compressed and rescue images for v10 and v32:

- Use the normal cross gcc instead of using an elf specific cris toolchain.
  This removes the dependency of this second toolchain.

- Use the normal cross objcopy instead of overriding it to use elf-toolchain.
  This allows compiling using "CROSS_COMPILE=$CRIS_GCC/cris-axis-linux-gnu-"
  instead of just "CROSS_COMPILE=$CRIS_GCC/cris-axis-linux-gnu/bin/"

- Remove redundant rules for compiling, the implicit rules are sufficient.

- Convert the arch/cris/arch-v10/boot/compressed/head.S to format
  accepted by the cris-axis-linux-gnu-gcc (registers must be prefixed
  with '$', remove explicit underscore on exported symbols)

- Remove a number of unused (and duplicated) prototypes from
  arch/cris/arch-v10/boot/compressed/misc.c.

- Correct memcpy and memset return values (actually return them!)
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>

arch/cris/arch-v10/boot/Makefile

@@ -2,7 +2,6 @@
 # arch/cris/arch-v10/boot/Makefile
 #
 
-OBJCOPY = objcopy-cris
 OBJCOPYFLAGS = -O binary --remove-section=.bss
 
 subdir- := compressed rescue

arch/cris/arch-v10/boot/compressed/Makefile

@@ -2,12 +2,10 @@
 # arch/cris/arch-v10/boot/compressed/Makefile
 #
 
-CC = gcc-cris -melf $(LINUXINCLUDE)
-ccflags-y += -O2
-LD = ld-cris
+asflags-y += $(LINUXINCLUDE)
+ccflags-y += -O2 $(LINUXINCLUDE)
 ldflags-y += -T $(obj)/decompress.ld
 OBJECTS = $(obj)/head.o $(obj)/misc.o
-OBJCOPY = objcopy-cris
 OBJCOPYFLAGS = -O binary --remove-section=.bss
 
 quiet_cmd_image = BUILD   $@
@@ -21,12 +19,6 @@ $(obj)/decompress.o: $(OBJECTS) FORCE
 $(obj)/decompress.bin: $(obj)/decompress.o FORCE
 	$(call if_changed,objcopy)
 
-$(obj)/head.o: $(obj)/head.S .config
-	@$(CC) -D__ASSEMBLY__ -traditional -c $< -o $@
-
-$(obj)/misc.o: $(obj)/misc.c .config
-	@$(CC) -D__KERNEL__ -c $< -o $@
-
 $(obj)/vmlinux: $(obj)/piggy.gz $(obj)/decompress.bin FORCE
 	$(call if_changed,image)
 

arch/cris/arch-v10/boot/compressed/decompress.ld

-OUTPUT_FORMAT(elf32-us-cris)
+/* OUTPUT_FORMAT(elf32-us-cris) */
+OUTPUT_FORMAT(elf32-cris)
 
 MEMORY 
 	{

arch/cris/arch-v10/boot/compressed/head.S

@@ -16,7 +16,7 @@
 
 	;; Exported symbols
 
-	.globl	_input_data
+	.globl	input_data
 
 
 	.text
@@ -26,7 +26,7 @@
 
 ;; We need to initialze DRAM registers before we start using the DRAM
 
-	cmp.d	RAM_INIT_MAGIC, r8	; Already initialized?
+	cmp.d	RAM_INIT_MAGIC, $r8	; Already initialized?
 	beq	dram_init_finished
 	nop
 
@@ -36,56 +36,56 @@ dram_init_finished:
 
 	;; Initiate the PA and PB ports
 
-	move.b   CONFIG_ETRAX_DEF_R_PORT_PA_DATA, r0
-	move.b   r0, [R_PORT_PA_DATA]
+	move.b   CONFIG_ETRAX_DEF_R_PORT_PA_DATA, $r0
+	move.b   $r0, [R_PORT_PA_DATA]
 
-	move.b   CONFIG_ETRAX_DEF_R_PORT_PA_DIR, r0
-	move.b   r0, [R_PORT_PA_DIR]
+	move.b   CONFIG_ETRAX_DEF_R_PORT_PA_DIR, $r0
+	move.b   $r0, [R_PORT_PA_DIR]
 
-	move.b   CONFIG_ETRAX_DEF_R_PORT_PB_DATA, r0
-	move.b   r0, [R_PORT_PB_DATA]
+	move.b   CONFIG_ETRAX_DEF_R_PORT_PB_DATA, $r0
+	move.b   $r0, [R_PORT_PB_DATA]
 
-	move.b   CONFIG_ETRAX_DEF_R_PORT_PB_DIR, r0
-	move.b   r0, [R_PORT_PB_DIR]
+	move.b   CONFIG_ETRAX_DEF_R_PORT_PB_DIR, $r0
+	move.b   $r0, [R_PORT_PB_DIR]
 
 	;; Setup the stack to a suitably high address.
 	;; We assume 8 MB is the minimum DRAM in an eLinux
 	;; product and put the sp at the top for now.
 
-	move.d	0x40800000, sp
+	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 - basse) as offset to the current PC.
 
-basse:	move.d	pc, r5
-	and.d	0x7fffffff, r5	; strip any non-cache bit
-	subq	2, r5		; compensate for the move.d pc instr
-	move.d	r5, r0		; save for later - flash address of 'basse'
-	add.d	_edata, r5
-	sub.d	basse, r5	; r5 = flash address of '_edata'
+basse:	move.d	$pc, $r5
+	and.d	0x7fffffff, $r5	; strip any non-cache bit
+	subq	2, $r5		; compensate for the move.d $pc instr
+	move.d	$r5, $r0		; save for later - flash address of 'basse'
+	add.d	_edata, $r5
+	sub.d	basse, $r5	; $r5 = flash address of '_edata'
 
 	;; Copy text+data to DRAM
 
-	move.d	basse, r1	; destination
-	move.d	_edata, r2	; end destination
-1:	move.w	[r0+], r3
-	move.w	r3, [r1+]
-	cmp.d	r2, r1
+	move.d	basse, $r1	; destination
+	move.d	_edata, $r2	; end destination
+1:	move.w	[$r0+], $r3
+	move.w	$r3, [$r1+]
+	cmp.d	$r2, $r1
 	bcs	1b
 	nop
 
-	move.d	r5, [_input_data] ; for the decompressor
+	move.d	$r5, [input_data] ; 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
+	moveq	0, $r0
+	move.d	_edata, $r1
+	move.d	_end, $r2
+1:	move.w	$r0, [$r1+]
+	cmp.d	$r2, $r1
 	bcs	1b
 	nop
 
@@ -95,15 +95,15 @@ basse:	move.d	pc, r5
 	move.d	_cmd_line_addr, $r12
 	move.d  $r11, [$r12]
 
-	;; Do the decompression and save compressed size in _inptr
+	;; Do the decompression and save compressed size in inptr
 
-	jsr	_decompress_kernel
+	jsr	decompress_kernel
 
-	;; Put start address of root partition in r9 so the kernel can use it
+	;; Put start address of root partition in $r9 so the kernel can use it
 	;; when mounting from flash
 
-	move.d	[_input_data], r9	; flash address of compressed kernel
-	add.d	[_inptr], r9		; size of compressed kernel
+	move.d	[input_data], $r9	; flash address of compressed kernel
+	add.d	[inptr], $r9		; size of compressed kernel
 
 	;; Restore command line magic and address.
 	move.d  _cmd_line_magic, $r10
@@ -112,12 +112,12 @@ basse:	move.d	pc, r5
 	move.d  [$r11], $r11
 
 	;; Enter the decompressed kernel
-	move.d	RAM_INIT_MAGIC, r8	; Tell kernel that DRAM is initialized
+	move.d	RAM_INIT_MAGIC, $r8	; Tell kernel that DRAM is initialized
 	jump	0x40004000	; kernel is linked to this address
 
 	.data
 
-_input_data:
+input_data:
 	.dword	0		; used by the decompressor
 _cmd_line_magic:
 	.dword 0

arch/cris/arch-v10/boot/compressed/misc.c

@@ -30,8 +30,7 @@
 #define STATIC static
 
 void* memset(void* s, int c, size_t n);
-void* memcpy(void* __dest, __const void* __src,
-	     size_t __n);
+void* memcpy(void* __dest, __const void* __src, size_t __n);
 
 #define memzero(s, n)     memset ((s), 0, (n))
 
@@ -81,11 +80,8 @@ static unsigned outcnt = 0;  /* bytes in output buffer */
 #  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 */
 
@@ -95,7 +91,6 @@ 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 **);
  
@@ -103,8 +98,8 @@ 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;
+extern int _end;
+static long free_mem_ptr = (long)&_end;
  
 #include "../../../../../lib/inflate.c"
 
@@ -170,6 +165,8 @@ memset(void* s, int c, size_t n)
 	char *ss = (char*)s;
 
 	for (i=0;i<n;i++) ss[i] = c;
+
+   return s;
 }
 
 void*
@@ -180,6 +177,8 @@ memcpy(void* __dest, __const void* __src,
 	char *d = (char *)__dest, *s = (char *)__src;
 
 	for (i=0;i<__n;i++) d[i] = s[i];
+
+   return __dest;
 }
 
 /* ===========================================================================
@@ -216,14 +215,12 @@ error(char *x)
 	while(1);	/* Halt */
 }
 
-void
-setup_normal_output_buffer()
+void setup_normal_output_buffer(void)
 {
 	output_data = (char *)KERNEL_LOAD_ADR;
 }
 
-void
-decompress_kernel()
+void decompress_kernel(void)
 {
 	char revision;
 	
@@ -257,7 +254,7 @@ decompress_kernel()
 
 	makecrc();
 
-	__asm__ volatile ("move vr,%0" : "=rm" (revision));
+	__asm__ volatile ("move $vr,%0" : "=rm" (revision));
 	if (revision < 10)
 	{
 		puts("You need an ETRAX 100LX to run linux 2.6\n");

arch/cris/arch-v10/boot/rescue/Makefile

@@ -2,12 +2,9 @@
 # Makefile for rescue (bootstrap) code
 #
 
-CC = gcc-cris -mlinux $(LINUXINCLUDE)
-ccflags-y += -O2
-asflags-y += -traditional
-LD = gcc-cris -mlinux -nostdlib
+ccflags-y += -O2 $(LINUXINCLUDE)
+asflags-y += $(LINUXINCLUDE)
 ldflags-y += -T $(obj)/rescue.ld
-OBJCOPY = objcopy-cris
 OBJCOPYFLAGS = -O binary --remove-section=.bss
 obj-$(CONFIG_ETRAX_AXISFLASHMAP) = head.o
 OBJECT := $(obj)/head.o

arch/cris/arch-v32/boot/Makefile

@@ -2,7 +2,6 @@
 # arch/cris/arch-v32/boot/Makefile
 #
 
-OBJCOPY = objcopy-cris
 OBJCOPYFLAGS = -O binary -R .note -R .comment
 
 subdir- := compressed rescue

arch/cris/arch-v32/boot/compressed/Makefile

@@ -2,14 +2,10 @@
 # arch/cris/arch-v32/boot/compressed/Makefile
 #
 
-CC = gcc-cris -mlinux -march=v32 $(LINUXINCLUDE)
 asflags-y += -I $(srctree)/include/asm/mach/ -I $(srctree)/include/asm/arch
 ccflags-y += -O2 -I $(srctree)/include/asm/mach/ -I $(srctree)/include/asm/arch
-LD = gcc-cris -mlinux -march=v32 -nostdlib
 ldflags-y += -T $(obj)/decompress.ld
-obj-y = head.o misc.o
 OBJECTS = $(obj)/head.o $(obj)/misc.o
-OBJCOPY = objcopy-cris
 OBJCOPYFLAGS = -O binary --remove-section=.bss
 
 quiet_cmd_image = BUILD   $@

arch/cris/arch-v32/boot/rescue/Makefile

@@ -9,7 +9,6 @@ asflags-y += -I $(srctree)/include/asm/arch/mach/ -I $(srctree)/include/asm/arch
 LD = gcc-cris -mlinux -march=v32 -nostdlib
 ldflags-y += -T $(obj)/rescue.ld
 LDPOSTFLAGS = -lgcc
-OBJCOPY = objcopy-cris
 OBJCOPYFLAGS = -O binary --remove-section=.bss
 obj-$(CONFIG_ETRAX_AXISFLASHMAP) = head.o
 OBJECT := $(obj)/head.o