Hi, OVMF is a project of tianocore: http://sourceforge.net/apps/mediawiki/tianocore/index.php?title=OVMF
OVMF could be UEFI bios of qemu (-bios OVMF.fd), it could boot a UEFI image and enter UEFI shell. I have build and test. it works well in qemu. So I think it could be a payload of coreboot. coreboot init hardware and pass control to OVMF. Does anyone do that? Is it possible?