[U-Boot] i386 Full Relocation

[Graeme Russ]

On Sun, Oct 4, 2009 at 8:09 AM, Wolfgang Denk <wd at denx.de> wrote:
> Dear Graeme,
>
> In message <d66caabb0910030124x12a9958fl4536b55ed35aaca2 at mail.gmail.com> you wrote:
>>
>> Did you happen to see this patch set fly past your inbox?
>> (http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/68924)
>
> I've seenit, but had no time yet for a closer look.
>
>> The patch series is a bit dirty, and I would like to clean it up a bit,
>> but would appreciate some feedback on the approach I have taken first
>
> I'm afraid I don't have the slightest clue how this is supposed to
> work on x86. I always avoided to do any low-level fork for this
> architecture.

I don't actually think that the last patch (i.e. the actual relocation
patch itself) is specific to x86 (or any other arch) - I actually figured
it out from information I found at:

http://www.oit.uci.edu/dcslib/digital_unix/digital-v40d/APS31DTE/DOCU_002.HTM#reldyn_section

Which, as you might guess from the URL, is about Digital Unix and not
x86 Linux. This was an absolute gold mine of information in relation to
ELF relocation. I think as long as U-Boot is linked as an ELF executable,
and the necessary symbols are provided in the linker script to survive the
strip step, the method I have implemented should be very portable across
all architectures. It would be really good if someone(s) could give it a
try on other, currently non-relocating, arches

>
> Best regards,
>
> Wolfgang Denk

Regards,

Graeme