Re: [coreboot] Fwd: POST cards, I/O ports and M.2 to MiniPCIe

[Nico Huber]

On 03.04.2018 23:29, Trammell Hudson wrote:
> What ended up working for me was the PC speaker since there is no other
> I/O available so early.  I'd really like to thank Uwe Hermann and the
> other devs of libpayload/speaker.c -- I was able to port their driver
> functions to execute very soon after the reset vector and confirm code
> execution with beeps and busy waiting.

You might have missed `src/drivers/pc80/pc/spkmodem.c` [1].

Nico

[1] https://www.coreboot.org/Spkmodem