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Commit bdb144b6 authored by Jesper Nilsson's avatar Jesper Nilsson
Browse files

[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: default avatarJesper Nilsson <jesper.nilsson@axis.com>
parent 543cf4cb

arch/cris/arch-v10/boot/Makefile

+0 −1
Original line number Diff line number Diff line
@@ -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 −10
Original line number Diff line number Diff line
@@ -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

+2 −1
Original line number Diff line number Diff line 
OUTPUT_FORMAT(elf32-us-cris)

/* OUTPUT_FORMAT(elf32-us-cris) */

OUTPUT_FORMAT(elf32-cris)



MEMORY 

	{

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

+49 −49
Original line number Diff line number Diff line
@@ -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

+10 −13
Original line number Diff line number Diff line
@@ -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");