Re: [coreboot] [Qemu-devel] Release plan for 0.12.0

[Anthony Liguori <aliguori@us.ibm.com>]

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.

> If that is just as simple with OVMF, and easier to maintain, then it's
> hard to argue with that.
>   

I don't know enough about EFI, but my concern is that down the road, 
hardware devices will start to exist that require EFI because they 
implement EFI modules and not legacy option ROMs.  In order to support 
PCI passthrough of such devices, we will need to provide an EFI capable 
firmware.

It's really just a matter of how long before this becomes a problem for us.

-- 
Regards,

Anthony Liguori