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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
sw r6, r1, r0
lhu r7, r1, r0
shi r7, r0, 0x2
shi r6, r0, 0x6
/*
* Copy U-Boot code to CONFIG_SYS_TEXT_BASE
* 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
lhu r7, r1, r10
rsubi r8, r10, 0x2
sh r7, r0, r8
rsubi r8, r10, 0x6
sh r6, r0, r8
#endif
#ifdef CONFIG_SYS_USR_EXCEP