[U-Boot] environment access before relocation does not work on (some) arm

[Wolfgang Denk]

Dear Matthias Fuchs,

In message <4FED7877.2020505 at esd.eu> you wrote:
> 
> I just noticed that using getenv (and friends)
> does not work on ARM (namely i.MX28) from board_init_f()
> after running through the init_sequence.

This is normal, and documented.  Before relocation, you must not use
getenv().  

> Env access does not work before env_relocate() in board_init_r().

It does, but you have to play by the rules, i. e. use getenv_f()
instead.

> Didn't this behave different sometimes before? Even after the big
> env rework?

No. The use of getenv() before relocation has never been supported.
It may have worked (by pure chance) on some systems, but that's all.

Best regards,

Wolfgang Denk

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