[coreboot] Re: My Asus P2B-LS is still having fun with coreboot/SeaBIOS/flashrom. Now I have questions.

[Peter Stuge]

Keith Hui wrote:
> The hard disk booting stalled after SeaBIOS. Took me hours but
> eventually I found a line in my serial log that there has been a
> DMA timeout. Turning UDMA off in devicetree.cb and flash again made
> it boot again. So I would have to revert 576315e1 (aka CB:40961),
> but I'm hesitant because that seemed like the reasonable thing to
> do and it should have worked.

UDMA should only ever be enabled for a channel when an actual drive
that supports UDMA is connected. I don't believe it's a good idea to
enable UDMA on channels without a connected drive. And finally the
UDMA code can of course be buggy.

Regards

//Peter