[coreboot] Ability to remotely debug the grub menu in case of boot failure

[Taiidan at gmx.com]

On 10/03/2017 07:27 AM, Anshuman Aggarwal wrote:

> Hi,
> If a coreboot compatible motherboard is used and the right
> coreboot+plugins flashed, is there a way that can be used to view the
> linux terminal console during boot time in order to remotely
> debug/troubleshoot any grub level bootup issues (before the SSH or any
> other such daemon can load)?
>
> All the solutions I see so far seem to be proprietary to Intel and
> require Server motherboards.
>
> Since coreboot has a network debug log sending option, it stands to
> reason that it could theoretically connecting a terminal console over
> a compatible ethernet card?
>
> Thoughts anyone? Apologies if this has been asked but mailman does not
> make it easy to search archives.
>
> Regards
> Anshuman
>
I would get a KGPE-D16 or KCMA-D8, install raptor's OpenBMC port and use 
grub's serial output connected to the BMC's serial port - all entirely 
libre.

Your other choice is using another computer to view the grub serial 
output if you don't want to use the two above boards (although I 
recommenced getting one as they are the best last owner controlled x86 
motherboards)