Hi Mark,

> I have done some work on adding support for EFI runtime services on
> OpenBSD/amd64, based on the code for OpenBSD/arm64.  My plan was to
> implement an ioctl(2) interface that is compatible with FreeBSD's
> <sys/efiio.h> interface.  Theo objected to putting EFI-related headers
> in /usr/include/sys, so the EFI-related headers will probably end up
> in /usr/include/dev/efi (so you'd be include <dev/efi/efiio.h>
> instead).

Great to hear that you went with FreeBSD's API.  It's a natural choice
for DragonBSD, and NetBSD chose compatible API on AArch64, so it sounds
like all BSDs will have an almost identical API.  Having header in a
different location is a minor thing.

I too was trying to make EFI RT work in [1], it doesn't crash the
kernel by now, but GetTime() doesn't return proper data either.

[1]: 
https://github.com/3mdeb/openbsd-src/compare/esrt...3mdeb:openbsd-src:efi-vars

> I hope to have some time to make progress on this next week, so let me
> come back to you then.

Is the code available anywhere?

By the way, do you plan to have something like `libefivar` provided as
part of OpenBSD?

Cheers,
Sergii

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