Hi,
> > (2) ia32 ovmf too? Will anybody use it?
>
> Then the next question is, what's the status of 32-bit UEFI OSes? Simple:
> [ summary: bad ]
Yep, that matches the impression I have.
Guess we don't want bother then.
> Enabling Secure Boot in the OVMF binary is orthogonal to all of the
> above, but it has a licensing impact. It embeds (a subset of) OpenSSL in
> the binary, and changes the terms from "2-clause BSDL" to "2-clause BSDL
> and OpenSSL license" ("and" in the restrictive, not permissive, sense).
> I'm unsure if QEMU is willing and able to distribute such binaries.
>
> For the widest and simplest usability, X64 (without the SMM driver stack
> and without Secure Boot) is likely the best.
Yes (also note the smm-enabled one doesn't run on i440fx).
So the options I see are (a) build without smm or (b) build two
variants.
> Anyway, I digress. Point is, GRUB is already UEFI capable (I don't know
> uboot), so GRUB should be able to look up the DTB sysconfig table, and
> use that. The sysconfig table in question is identified by the GUID
>
> B1B621D5-F19C-41A5-830B-D9152C69AAE0
grub already does that on aarch64, but not on arm.
So that should be fixable without too much effort.
u-boot is out for -M virt due to missing virtio drivers.
> $ qemu-system-(arm|aarch64) \
> -nographic -machine virt,dumpdtb=virt-dump.dtb
> $ dtc -I dtb -O dts <virt-dump.dtb | less
>
> but that's not the right way to carry the DTB from QEMU to guest code
Exactly. That just creates a reverse problem. Instead of copying the
kernel from the image you now have to copy the dtb file to the image.
> > There is one for the
> > vexpress boards, which actually works (for v9). But it lists only the
> > hardware physical vexpress boards have, any virtio-mmio devices you add
> > are not listed there.
>
> Right, the generated DTB lists all the virtio-mmio transports.
But u-boot looks for dtb files in /boot/dtbs/$kernelver/ instead of
using the one provided by qemu. So virtio isn't there (virtio-mmio @
vexpress works for a direct kernel boot).
cheers,
Gerd
