[coreboot] LED Postcode on Mainboard

Peter Stuge peter at stuge.se
Tue Sep 29 23:17:10 CEST 2009

Crankyadmin wrote:
> The FF means 'Boot attempt (INT 19h).'

I don't think this is it.

I would guess that instead there is a fatal error somewhere and the
last helpful value gets overwritten.

You really must get debug output in order to get help with this. We
need to see the messages.

Work out how to use USB debug device on another, working, board.
Possibly start with just using it for the Linux console on another
board, then you don't need coreboot at first. But do validate the USB
debug setup also with a known working board using coreboot, before
you try to use it for the MCP55 board.

Yes, it requires some money and effort, but trying to bring up a
coreboot board using nothing but POST codes is a waste of everyone's
time. :\


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