Dear Arno Steffen,
In message AANLkTin-oAgoCD6_SK5T-Si9E16-HQdZM-E9F3v2oTKP@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