On 18.01.2013 12:01, Vladimir 'φ-coder/phcoder' Serbinenko wrote:
Hello, all. I send a patch to make coreboot output console using system beeper and a corresponding code to interpret those beeps. I publish it under GPLv2+ but other licensing arrangements are possible. This was very useful to get console on X201 where I have neither serial nor EHCI debug.
This would need some improvements as currently it sometimes loses bits and it causes it to lose sync. I'll think how to do it.