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microblaze: Clean up reset asm code

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- Remove code copying
- Reset address is setup from first stage bootloader
- Support reset vector setup on little endian

Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Michal Simek 2011-08-30 15:22:24 +02:00
parent f3090fce77
commit 5562bcc241
1 changed files with 5 additions and 20 deletions
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25
arch/microblaze/cpu/start.S
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@ -67,26 +67,11 @@ _start:
addik r6, r0, CONFIG_SYS_RESET_ADDRESS addik r6, r0, CONFIG_SYS_RESET_ADDRESS
sw r6, r1, r0 sw r6, r1, r0
lhu r7, r1, r0 lhu r7, r1, r10
shi r7, r0, 0x2 rsubi r8, r10, 0x2
shi r6, r0, 0x6 sh r7, r0, r8
/* rsubi r8, r10, 0x6
* Copy U-Boot code to CONFIG_SYS_TEXT_BASE sh r6, r0, r8
* solve problem with sbrk_base
*/
#if (CONFIG_SYS_RESET_ADDRESS != CONFIG_SYS_TEXT_BASE)
addi r4, r0, __end
addi r5, r0, __text_start
rsub r4, r5, r4 /* size = __end - __text_start */
addi r6, r0, CONFIG_SYS_RESET_ADDRESS /* source address */
addi r7, r0, 0 /* counter */
4:
lw r8, r6, r7
sw r8, r5, r7
addi r7, r7, 0x4
cmp r8, r4, r7
blti r8, 4b
#endif
#endif #endif
#ifdef CONFIG_SYS_USR_EXCEP #ifdef CONFIG_SYS_USR_EXCEP