Le 09/10/2010 11:08, Lei Wen a écrit :
Ok, I know what the difference between our opinion now... You means the uboot should always loaded to TEXT_BASE(for nand case, as you said). So when we run to board_init_f, we don't need any relocation.
I am just feel put the code arrange like this would lose a good feature as original, tftp the uboot to a different place and use the go command to debug it.
This does not lose said feature. You can still disable relocation altogether by defining CONFIG_SKIP_RELOCATE_UBOOT (watch out then; you're responsible for linking u-boot for its intended *final* location).
Another question here, why the original implementation now call as CONFIG_SYS_ARM_WITHOUT_RELOC?
Means "this ARM build is without relocation", which is what the option does.
I think CONFIG_SYS_ARM_WITH_RELOC is correct, for it do the relocation at the very begining. :-p
Read the code carefully. You'll see that the old code is used when CONFIG_SYS_ARM_WITHOUT_RELOC is defined, and the new (reloc) code used when CONFIG_SYS_ARM_WITHOUT_RELOC is not define.
Best regards, Lei
Amicalement,