[U-Boot] [U-Boot, v3] board_r - fixup functions table after relocation

Tom Rini trini at ti.com
Mon Jan 27 15:57:09 CET 2014


On Mon, Jan 20, 2014 at 02:30:39PM +0400, Alexey Brodkin wrote:

> This is only required for "PIC" relocation and doesn't apply to modern
> "PIE" relocation which does data relocation as well as code.
> 
> "init_sequence_r" is just an array that consists of compile-time
> adresses of init functions. Since this is basically an array of integers
> (pointers to "void" to be more precise) it won't be modified during
> relocation - it will be just copied to new location as it is.
> 
> As a consequence on execution after relocation "initcall_run_list" will
> be jumping to pre-relocation addresses. As long as we don't overwrite
> pre-relocation memory area init calls are executed correctly. But still
> it is dangerous because after relocation we don't expect initially used
> memory to stay untouched.
> 
> Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com>
> 
> Cc: Tom Rini <trini at ti.com>
> Cc: Simon Glass <sjg at chromium.org>
> Cc: Masahiro Yamada <yamada.m at jp.panasonic.com>
> Cc: Doug Anderson <dianders at chromium.org>
> Cc: Thomas Langer <thomas.langer at lantiq.com>
> Cc: Albert ARIBAUD <albert.u.boot at aribaud.net>

Applied to u-boot/master, thanks!

-- 
Tom
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