[U-Boot] Rescue /alternative boot

[Wolfgang Denk]

Dear Arno Steffen,

In message <AANLkTin-oAgoCD6_SK5T-Si9E16-HQdZM-E9F3v2oTKP at mail.gmail.com> you wrote:
> 
> This sounds even more complicated to me. In fact - I don't have any
> clue, what and howto measure and reset the environment. This system
> doesn't even had a reset buttom... so it is always a cold boot.

So how will you find out if there is something wrong, and a reset to a
default state is indeed wanted?

> > You could eventually use netconsole.
> 
> Netconsole requires (afaik) a linux kernel, that is working.

We have netconsole support in U-Boot.

> But here I am at the beginning. How to listen on a network port ( I
> know what to don in linux, but in uboot?) and howto make this change
> in uboot environment to a certain state. (this can boot a system via
> tftp then instead of a flash file system)

Consider using netconsole then.

Best regards,

Wolfgang Denk

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