Avi Kivity wrote:
H. Peter Anvin wrote:
H. Peter Anvin wrote:
Yes, although simulating the memory "pre-shadowed" works just as
well; then it should be marked readonly by the BIOS immediately prior
to running INT 19h.
On top of this, getting proper DDIM support and PCI expansion ROM into
the BIOS would be a good thing. A PCI expansion ROM is attached to a
PCI device as a BAR and mapped into high memory, it is then copied to
shadowed RAM by the BIOS and its initialization stub is run. This is
done one device at a time, so that the initialization code can be
discarded, per the DDIM spec.
I imagine it's necessary for proper pci device assignment.
Well, if nothing else it would permit PCI device ROMs to work
unmodified. I was rather disappointed when I found out I couldn't
simulate PXE ROMs, even from devices which we can emulate.
-hpa
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