start.s 复制代码疑惑
2440start重定位有这样的代码：#ifndef CONFIG_SKIP_RELOCATE_UBOOT
relocate: /* relocate U-Boot to RAM */
adr r0, _start /* r0 <- current position of code */
ldr r1, _TEXT_BASE /* test if we run from flash or RAM */
cmp r0, r1 /* don't reloc during debug */
beq stack_setup
ldr r2, _armboot_start
ldr r3, _bss_start
sub r2, r3, r2 /* r2 <- size of armboot */
add r2, r0, r2 /* r2 <- source end address */
copy_loop:
ldmia r0!, {r3-r10} /* copy from source address */
stmia r1!, {r3-r10} /* copy to target address */
cmp r0, r2 /* until source end addreee */
ble copy_loop
#endif /* CONFIG_SKIP_RELOCATE_UBOOT
请问如果是从nandflash启动，复制又是怎么处理的呢，uboot的大小至少也是几十K啊，怎么全都复制到sdram中呢，请高手指点？ 回复 1# sylijinlei
参考我在另外一个论坛的帖子：
http://mcuos.com/thread-7137-1-1.html
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