Stefan Reinauer wrote:
Anthony Liguori wrote:
Patrick Georgi wrote:
With coreboot, seabios and Duet, it should be reasonably simple to provide a single BIOS image that selects (based on nvram - ie. configuration) which interface to provide: PCBIOS or UEFI.
That isn't terribly useful for QEMU because it implies that QEMU needs to make the decision about which one to use. If QEMU was capable of making that decision without user intervention, then we could just select to load PCBIOS or UEFI.
Are you guys sure you want to go down that road rather than using an UEFI with a CSM?
We'll I've been advocating UEFI + CSM (based on SeaBIOS) so I'm not sure what you meant by 'that road'.
This was attempted for Open Firmware and never happened during its life time. I doubt there is any incentive for vendors to ship devices without legacy option roms, especially since there is no advantage in doing so.
We'll be stuck with legacy option roms for a long, long time. But I also expect there will be a few devices out there that only provide EFI modules.