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

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- 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>
This commit is contained in:
Jesper Nilsson 2008-06-29 23:15:19 +02:00
parent 543cf4cb3f
commit bdb144b67a
9 changed files with 65 additions and 85 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/cris/arch-v10/boot/Makefile
View File

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

12
arch/cris/arch-v10/boot/compressed/Makefile
View File

@ -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)

3
arch/cris/arch-v10/boot/compressed/decompress.ld
View File

@ -1,4 +1,5 @@
OUTPUT_FORMAT(elf32-us-cris)
/* OUTPUT_FORMAT(elf32-us-cris) */
OUTPUT_FORMAT(elf32-cris)
MEMORY
{

98
arch/cris/arch-v10/boot/compressed/head.S
View File

@ -15,77 +15,77 @@
#define COMMAND_LINE_MAGIC 0x87109563
;; Exported symbols
.globl _input_data
.globl input_data
.text
nop
di
;; 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
#include "../../lib/dram_init.S"
dram_init_finished:
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
@ -94,16 +94,16 @@ basse: move.d pc, r5
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
;; Put start address of root partition in r9 so the kernel can use it
;; Do the decompression and save compressed size in inptr
jsr decompress_kernel
;; 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

23
arch/cris/arch-v10/boot/compressed/misc.c
View File

@ -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");

7
arch/cris/arch-v10/boot/rescue/Makefile
View File

@ -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

1
arch/cris/arch-v32/boot/Makefile
View File

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

4
arch/cris/arch-v32/boot/compressed/Makefile
View File

@ -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 $@

1
arch/cris/arch-v32/boot/rescue/Makefile
View File

@ -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