[U-Boot-Users] [PPC] PLEASE READ - was: [PATCH] Fix linker scripts: add NOLOAD atribute to .bss/.sbss sections

[Wolfgang Denk]

In message <47A76677.6080308 at freescale.com> you wrote:
> 
> > Except for the declaration of the variable itself, *nothing* changes.
> > What do you mean would become simpler?
> 
> A normal global variable is simpler than one that's tied to a specific register, 
> wouldn't you say?  I wasn't trying to be that insightful.

No, I wouldn't say that. To me a pointer that can live all the time in
a register is simpler than one that lives somewhere in a memory
location and has to be loaded for use - you can see this from the code
size as well.

Also, it's pretty convenient for debugging, for example when you need
to figure out where U-Boot was relocated to in RAM  -  just  add  the
offset  in struct global_data and you have the relocation offset, for
example.

Best regards,

Wolfgang Denk

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