Re: UEFI support in ARM DomUs

[Julien Grall <julien.grall.oss@xxxxxxxxx>]

On Sun, 31 May 2020 at 23:05, Roman Shaposhnik <roman@xxxxxxxxxx> wrote:
> Hi!
>
> with a lot of help from Stefano, we're getting RPi4 support in
> Project EVE pretty much on par between KVM and Xen.
>
> One big area that still remains is supporting UEFI boot sequence
> for DomUs. With KVM, given the qemu virt device model this is
> as simple as using either stock UEFI build for arm or even U-Boot
> EFI emulation environment and passing it via -bios option.
>
> Obviously with Xen on ARM we don't have the device model so
> my understanding is that the easiest way we can support it would
> be to port UEFI's OvmfPkg/OvmfXen target to ARM (it seems to
> be currently exclusively X64).

EDK2 has been supporting Xen on Arm for the past 5 years. We don't use
OvmfPkg/OvmfXen but ArmVirtPkg/ArmVirtXen (see [1]).
I haven't tried to build it recently, but I should be able to help if
there is any issue with it.

Cheers,

[1] https://github.com/tianocore/edk2/blob/master/ArmVirtPkg/ArmVirtXen.fdf