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

Peter Stuge peter at stuge.se
Thu Oct 5 21:56:25 CEST 2017

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

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.


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