[coreboot] Serengeti VGA

Marc Jones Marc.Jones at amd.com
Mon Oct 20 21:48:41 CEST 2008

Myles Watson wrote:
> I've been trying to make the configuration spaces match between v2 and v3.
> The biggest difference left is the disabled/hidden devices which are not
> hidden in v3.
> Any chance that's causing the problem?
> I've also been trying to figure out where the legacy IO space (e.g. 0x3d4)
> gets routed to the card.  Does this happen automatically because the VGA bit
> is set in the bridge?
Yes, The vga bit on the subtractive bridge routes the graphics io.

How did you work around the vm86 problem? Did the graphics command 
register get re-enabled?


Marc Jones
Senior Firmware Engineer
(970) 226-9684 Office
mailto:Marc.Jones at amd.com

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