hi, after someone brought it up on IRC, i recently revisited UEFI PXE booting OpenBSD. i've only tested amd64 BOOTX64.EFI here, but i've tried a few scenarios and they all pretty much result in the same mystifying issue: BOOTX64.EFI loads and the machine immediately resets.
test scenarios are mostly under OVMF in QEMU, but i also tried my thinkpad A485 also with no joy. i've tried multiple versions of QEMU (10.0.2, 10.0.8, 10.2.0), EDK2/OVMF, and also tried each BOOTX64.EFI from OpenBSD 7.2 thru 7.8, and BOOTX64.EFI from snapshots dated 04-Apr-2026. all have the same results, the vm just resets and boots the OVMF firmware again. on the other hand, if i instead boot ipxe.efi built from https://ipxe.org/download#uefi, it loads fine. if i try "chain BOOTX64.EFI" from iPXE, it will chain and get me to a boot prompt. however, this has the unfortunate result that BOOTX64.EFI can't actually load anything else like bsd.rd - in this state the tftp protocol seems missing. before i go debugging further, i wanted to write and see if anyone knows if i did something wrong - has anyone had UEFI PXE boot working recently? thanks, nick
