Hi, ipxe just got a EFI_PXE_BASE_CODE_PROTOCOL implementation. I've updated ipxe and commented the EFI_DOWNGRADE_UX define in the qemu config. If you want to test this you can fetch the qemu branch with the updated roms here:
https://www.kraxel.org/cgit/qemu/log/?h=rebase/roms-next Ran a quick test. The good news are that shim.efi can now fetch files, it happily chainloads grub.efi. The bad news are that grub.efi has trouble loading files. It doesn't present the boot menu but greets me with a prompt, which usually happens if grub fails to load the config file. So things have improved, but there still is something broken ... cheers, Gerd