UEFI trouble with OVMF under Xen - nothing boots

[Marcin Cieslak]

On Sat, 1 Apr 2017, Marcin Cieslak wrote:

> This is a follow up to the UEFI Windows boot problems
> reported after 4.7 got imported:
> 
> https://lists.freebsd.org/pipermail/freebsd-xen/2016-June/002745.html
> 
> I am using FreeBSD 12.0-CURRENT #6 r314708: Mon Mar  6 13:09:31 UTC 2017     root at o.saper.info:/usr/obj/usr/src/sys/GENERIC  amd64 as dom0
> 
> In the 4.5 times I could install and boot Windows 2016 Technical Preview 5 without
> major problems. In fact, I started using this as my default Windows
> environment - it was working very well and very fast.

A follow up to this:

I have tried a pure qemu installed from packages:

qemu-system-x86_64 \
        -bios /usr/local/share/ovmf/ovmf.bin \
        -no-shutdown \
        -nodefaults -no-user-config \
        -name Windows2016Pure -vnc 127.0.0.1:0,to=99 \
        -display none -device VGA,vgamem_mb=16 \
        -boot order=c \
        -usb -usbdevice tablet -smp 2,maxcpus=2 \
        -device rtl8139,id=nic0,netdev=net0,mac=00:16:3e:5d:0d:48 \
        -netdev type=tap,id=net0,ifname=tap0,script=no,downscript=no \
        -machine pc -m 4080 \
        -drive file=/dev/zvol/zroot/windows0,if=ide,index=0,media=disk,format=raw,cache=writeback

and the boot process goes easily past the OVMF and continues booting,
only to fail "Inaccessible boot device" Windows message much later (probably because
I was using XenPV drivers there).

Marcin