[U-Boot] Memory test post relocation

[DaveKucharczyk <david.kucharczyk@gmail.com>]

Hi Albert,
Thanks for the great information.

Albert ARIBAUD (U-Boot) wrote
>  Baaad, bad. The first time you change something in your code, your
> relocation offset might change and this will make U-Boot crash and burn in
> interesting ways.
> 
> Just define CONFIG_SYS_TEXT_BASE to some low address and let relocation
> happen. You can find your actual relocation address in the global data
> structure. 

If I set CONFIG_SYS_TEXT_BASE to a low address then I can't run a memory
test starting at the lowest address because that's where the U-Boot code
will be. 

I think the best thing would be to run a memory test on the full 2GB before
relocation happens. Is that possible? 

Albert ARIBAUD (U-Boot) wrote
> How do you know the lowest address used by your stack during your memory
> test?

I know the address of the stack pointer from DEBUG message...

I erroneously thought that was the beginning of the stack. The stack expands
down form that address, but how much?  I don't see a global data stack size
variable.

Before, we have #define CONFIG_STACKSIZE	(128 * 1024) set in the header
file.     

Basically what is the best way to run the memory test? If I can run it
before relocation then it would make things very simple. 



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