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

Gregg Levine gregg.drwho8 at gmail.com
Fri Oct 6 07:05:01 CEST 2017


Hello!
Peter something else that needs to be mentioned is that the backend
you've mentioned here, and of course is (partially) documented on the
Wiki, is that according to Google Code, it is in archive only status.
That means that everything there is in its final status. Nothing new
will be committed, unless someone on our list had the foresight to
export it to Github prior to that event.
-----
Gregg C Levine gregg.drwho8 at gmail.com
"This signature fought the Time Wars, time and again."


On Thu, Oct 5, 2017 at 3:56 PM, Peter Stuge <peter at stuge.se> wrote:
> Anshuman Aggarwal wrote:
>> Out of curiosity, is this a limitation to what is possible in the BIOS
>> or that nobody has found the need to do this sort of remote control
>> using the BIOS yet?
>
> There are a few things that you would need to consider.
>
> For legacy compatibility you require a VGA BIOS with a network backend.
>
> For a better solution, do what Ron suggested and put Linux in flash.
>
>
> For the legacy solution, there exists a VGA BIOS with a serial port
> backend called SGABIOS, which you could build upon. SGABIOS is open
> source.
>
> You would have to develop packet drivers for the network adapters
> which you want to work. You also need an IP stack. And you would
> have to make it all work in a BIOS environment, without any OS.
>
> It is doable, but it is no small task.
>
>
> //Peter
>
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