Hi, Albert, 2010/12/16 Albert ARIBAUD <albert.arib...@free.fr>: > Le 16/12/2010 04:04, Jason Liu a écrit : >> >> Hi, Albert, >> >> 2010/12/16 Albert ARIBAUD<albert.arib...@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.
It's not an IPL. The layout is that as the following, ---- ----- TEXT_BASE plug-in ---------- _start ---------- _end No matter what you adjusted the TEXT_BASE, the _star is not equal to it. The fix doe not affect the original functionality but just make it more flexible. > >> Thanks for your comments. Cheers, > > Amicalement, > -- > Albert. > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
