Le 16/12/2010 04:04, Jason Liu a écrit :
Hi, Albert,
2010/12/16 Albert ARIBAUDalbert.aribaud@free.fr:
Hi Jason,
Le 15/12/2010 14:57, Jason Liu a écrit :
There will have issue if the _start not equal TEXT_BASE when enable relocation.
In what case does this happen?
Some ARM SOC ROM need run the plug-in code first in IRAM and the plugin-in code need appear at the beginning of the u-boot. ROM will check the plugin-in header to do security check and run the plug-in code to init the DDR etc. In this case the _start will be not the same as TEXT_BASE.
I still don't see why u-boot would not end up where specified.
The fact that there is a "plug-in" (I assume it's what I would call an IPL) does not change the fact that its payload (u-boot) can and will be loaded where specified, i.e. at TEXT_BASE -- and if it is loaded elsewhere, it is at a fixed address, so TEXT_BASE can be adjusted) All IPLs that I know of put their payload where specified.
Thanks for your comments. Cheers,
Amicalement,