Excellent! Good to see you got the serial console working as well. There are a bunch of extra options like allowing custom nvram per-vm (normally it’s just one read-only nvram for all instances), but those aren’t important right now, basic EFI domu booting is pretty fair to get in Debian first.
John > On 1 Mar 2018, at 00:14, Hans van Kranenburg <h...@knorrie.org> wrote: > > Hey, > > On 02/28/2018 12:59 AM, John Keates wrote: >> >> [...] >> >> 1. Install Xen with OVMF support >> 2. Install OVMF (which basically just gets you the binary file, package is >> called ovmf) >> 3. Get an EFI-bootable image, the Debian Netinstall image will probably do >> fine >> 3. Create a domU config like this: >> >> name = 'uefi-domu-thingy' >> bios = "ovmf" >> builder = 'hvm' >> memory = '512' >> vcpus = 1 >> >> Then sudo xl create <whateveryoucalledit.cfg> >> >> This should start the domu, and since there is no disk, just get to the UEFI >> shell and idle around and not do much else. You can connect to it over VNC, >> but I’m sure it can be started in UEFI text mode too so you get UEFI access >> via the serial console. > > Ok, as promised, I tried. > > For Xen 4.10, I ended up with: > > name = 'uefi-domu-thingy' > bios = "ovmf" > type = 'hvm' > memory = '512' > vcpus = 1 > vnc=1 > vnclisten='0.0.0.0' > serial='pty' > > I installed the qemu packages that Mark Pryor already rebuilt as test > (which use libxen 4.10). > > When doing xen create -c on that, I get a serial console to it: > > UEFI Interactive Shell v2.2 > EDK II > UEFI v2.70 (EDK II, 0x00010000) > Mapping table > BLK0: Alias(s): > PciRoot(0x0)/Pci(0x1,0x0)/Floppy(0x0) > BLK1: Alias(s): > PciRoot(0x0)/Pci(0x1,0x0)/Floppy(0x1) > Press ESC in 1 seconds to skip startup.nsh or any other key to continue. > Shell> > > A vnc connection also shows an ugly screen which a copy of the output. > > Step 2: Use a disk > > I simply added... > disk = ['file:/yolo/ovmf/debian-9.3.0-amd64-netinst.iso,xvda'] > > and now the serial console shows a purple blinking cursor, and the vnc > connection shows a graphical Debian GNU/Linux UEFI Installer menu. > > Great success! > > Hans
