Re: UEFI support in ARM DomUs

[Roman Shaposhnik <roman@zededa.com>]

On Mon, Jun 1, 2020 at 9:12 AM Stefano Stabellini
<sstabellini@kernel.org> wrote:
>
> + George
>
> On Sun, 31 May 2020, Roman Shaposhnik wrote:
> > Hi Julien!
> >
> > On Sun, May 31, 2020 at 3:24 PM Julien Grall <julien.grall.oss@gmail.com> wrote:
> > >
> > > On Sun, 31 May 2020 at 23:05, Roman Shaposhnik <roman@zededa.com> 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
> >
> > This is really, really awesome -- I guess it would be really helpful to document
> > this someplace on the ARM/Xen wiki (I can volunteer if someone can grant
> > me the karma).
>
> Regarding the wiki: yes please! Let George know if you don't have write access.

Hey Geroge -- FWIW: my wiki account name is rvs -- please let me know
once you enable whatever needs to be enabled for my write access.

Thanks,
Roman.