Re: BIOS Flashing

Hi Orion,

On 2024-04-09 18:25, Orion Brewer wrote:
> Is there a coreboot BIOS flash available for an unknown motherboard in a 
> customized PC? The motherboard is more than 10 years old. If there is a 
> coreboot BIOS flash for it, will it add secure boot and TPM 2.0?

It's impossible to say without more information about exactly what board 
it is. coreboot (and firmware in general) is board specific, and must be 
ported to each one individually. For a board port to be possible, 
coreboot also needs to have code to support critical components like the 
processor family and chipset.

Whether or not it will add secure boot depends on the payload. coreboot 
itself is only responsible for initializing the hardware, and then it 
hands off control to a payload, which is typically something capable of 
booting the operating system. Secure boot is part of UEFI, so you would 
need the edk2 payload, which is an implementation of the UEFI 
specification. As for the TPM, technically software or firmware based 
TPMs are possible, but I'm not aware of any implementation that works 
with coreboot. Often TPMs are dedicated chips soldered to the mainboard.

Cheers,
Nicholas

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