[U-Boot] [PATCH 1/5] Add basic errno support.

[Wolfgang Denk]

Dear Jerry Van Baren,

In message <4C42F8DE.5040009 at gmail.com> you wrote:
>
> > drop the "= 0" so that errno ends up in the bss ?
> > -mike
> 
> Is this going to be a problem during early startup (pre-relocation) vs. 
> normal running?  Pre-relocation, we only have a temporary stack and RAM 
> is not set up initially.
> 
> I have not looked at when RAM gets initialized vs. when env. variables 
> get used.  It is probably OK.  Wolfgang?

AFAICT the relevant code runs all only after relocation to RAM, i. e.
the use of errno (whether in BSS or not) should be no problem.

But you are right - using it before relocation will not work as is. We
could make it a global data entry, if needed.

Best regards,

Wolfgang Denk

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