Grall <jul...@xen.org>; > Nataliya Korovkina <malus.brandyw...@gmail.com> > Subject: UEFI support in ARM DomUs
We have made U-Boot run inside XEN DomU, but just only PV console part, not implement other frontend drivers currently. Would this help for your case if enable EFI in U-Boot? Regards, Peng. > > 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). > > So here's my first question: if there's anybody on this list who had a hand in > implementing OvmfPkg/OvmfXen can you please share your thoughts on how > much work that port may be (or whether it is even feasible -- I may totally be > missing something really obvious here). > > And as long as I've got your attention: two more questions: > 1.. compared to the above, would porting pvgrub to ARM be any > easier or more difficult? > > 2. same question for teaching u-boot about PV calls. > > Thanks, > Roman. > > P.S. Oh and I guess between: > 0. OvmfPkg/OvmfXen on ARM64 > 1. pvgrub on ARM64 > 2. u-boot/EFI emulation with PV calls backend I didn't miss any other > obvious way of making UEFI-aware VM images to boot on Xen ARM64 DomU, > right?
