[U-Boot] [PATCH] arm: add 8-byte alignment for ABI compliance before board_init_f

Graeme Russ
2010-11-12T09:47:11Z

On 12/11/10 19:50, Wolfgang Denk wrote:
> Dear Reinhard Meyer,
>
> In message <4CDCE769.8080209@emk-elektronik.de> you wrote:
>>
>> Is bootflag ever used? If not, why not change the parameter to
>> give the gd address to board_init_f?
>
> No, bootflag is never used and could / should be removed.
>
> Passing gd as parameter makes no sense, thoug, as it's global data and
> we reserve a register to store it's address, so it can always be used
> with minimal overhead.

Which is a really nice idea if you have a register to spare. Unfortunately,
x86 does not have this luxury, and the only way I can get gd (and as a
consequence upper memory bound for relocation) is to allocate it in
assembler and pass to C as a function argument

Regards,

Graeme