[coreboot] Serial Console only starts after reset

Stefan Reinauer stefan.reinauer at coresystems.de
Tue Jun 15 14:13:24 CEST 2010

On 6/15/10 1:38 PM, Joseph Smith wrote:
> Hello,
> I have a strange thing happening on the i810 port I am working on. When I
> power the board on i do not get any serial console from coreboot. VGA turns
> on and works fine, but no serial output. The strange part is if I push the
> reset button, serial console comes up and works fine until the next power
> off. The SuperIO is SMSC LPC47M102 and I am using superio/smsc/smscsuperio.
> Just wondering if anyone else has encountered this before. Any help /
> thoughts would be appreciated.

Your Super IO chip is not initialized correctly. Compare the register
output after reset and from cold start.
Did you run the same coreboot image already when you pressed the reset
button, or did you initially boot with the BIOS?


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