[coreboot] [PATCH] xcshell: serial shell for early debugging
c-d.hailfinger.devel.2006 at gmx.net
Tue Jul 14 21:54:30 CEST 2009
On 14.07.2009 11:23, Michael Gold wrote:
> I've been working on some code to ensure I can debug a system even if
> coreboot fails to boot an OS. The attached patch adds this code to the
> - serialprobe watches the serial port for about a second, and boots
> the system normally unless 32 consecutive null bytes are seen.
> - xcshell allows the CPU to be controlled via the serial port, using
> a binary protocol.
> The code assembles to about 1 KB, so it can be left in an image for
> emergency use. It's also modular in case someone wants to use it with
> something other than a serial port.
How does this relate to RemoteBIOS? AFAIK RemoteBIOS is explicitly
designed to be machine controllable even if CAR does not work.
More information about the coreboot