58 строки
885 B
ArmAsm
58 строки
885 B
ArmAsm
/* romfs move to __ebss */
|
|
|
|
#include <asm/linkage.h>
|
|
|
|
#if defined(__H8300H__)
|
|
.h8300h
|
|
#endif
|
|
#if defined(__H8300S__)
|
|
.h8300s
|
|
#endif
|
|
|
|
#define BLKOFFSET 512
|
|
|
|
.text
|
|
.globl __move_romfs
|
|
_romfs_sig_len = 8
|
|
|
|
__move_romfs:
|
|
mov.l #__sbss,er0
|
|
mov.l #_romfs_sig,er1
|
|
mov.b #_romfs_sig_len,r3l
|
|
1: /* check romfs image */
|
|
mov.b @er0+,r2l
|
|
mov.b @er1+,r2h
|
|
cmp.b r2l,r2h
|
|
bne 2f
|
|
dec.b r3l
|
|
bne 1b
|
|
|
|
/* find romfs image */
|
|
mov.l @__sbss+8,er0 /* romfs length(be) */
|
|
mov.l #__sbss,er1
|
|
add.l er0,er1 /* romfs image end */
|
|
mov.l #__ebss,er2
|
|
add.l er0,er2 /* distination address */
|
|
#if defined(CONFIG_INTELFLASH)
|
|
add.l #BLKOFFSET,er2
|
|
#endif
|
|
adds #2,er0
|
|
adds #1,er0
|
|
shlr er0
|
|
shlr er0 /* transfer length */
|
|
1:
|
|
mov.l @er1,er3 /* copy image */
|
|
mov.l er3,@er2
|
|
subs #4,er1
|
|
subs #4,er2
|
|
dec.l #1,er0
|
|
bpl 1b
|
|
2:
|
|
rts
|
|
|
|
.section .rodata
|
|
_romfs_sig:
|
|
.ascii "-rom1fs-"
|
|
|
|
.end
|