Current master cc35a44cf7b522b, QEMU is not able to boot an stuck in SeaBIOS (only SeaBIOS version was printed) when started with "-device pvscsi" CLI option.
I've used following CLI in my test case: qemu-system-x86_64 -enable-kvm -m 1024 -snapshot -monitor stdio -device pvscsi,id=pvscsi -drive if=none,id=fc,file=fc18x64 -device scsi-disk,drive=fc,bus=pvscsi.0