[U-Boot] RFC: Aligning arch initialisation sequences

[Albert ARIBAUD]

Le 13/11/2010 05:16, Graeme Russ a écrit :

> I essence, the gd pointer is a unique global variable available prior to
> relocation. On all other arches, this is achieved by using a reserved
> register which I do not have the luxury of on x86 :(

Dusting off ooooold knowledge of x86 and without even a glance at x86 
u-boot... Since GD is the only global used pre-reloc, can you not ensure 
it always ends up first in the data segment, and then manage two values 
for the DS segment reg, one pre-reloc where only gd can be used, and one 
post-reloc where gd and all the other globals can be accessed?

> Regards,
>
> Graeme

Amicalement,
-- 
Albert.