Comment # 5 on bug 1219180 from Fabian Vogt

(In reply to Thomas Zimmermann from comment #4)
> (In reply to Fabian Vogt from comment #3)
> > (In reply to Thomas Zimmermann from comment #2)
> > > This uses virtio_gpu. I assume it runs in an emulator or virtual machine?
> > 
> > Correct. Other emulated hardware didn't work either (IIRC -vga std)
> 
> VGA requires a VGA BIOS, which is x86 code.

If the firmware interface and GRUB have video output, GOP is present, so this
shouldn't matter.

> Under regular aarch64 systems (e.g., Rpi) the firmware's framebuffer is
> listed in the device tree. But there is no DT here; just UEFI. 
> 
> I've installed MicroOS in Aarch64 qemu to test. The kernel config is
> correct. There is some support for graphics in the early boot stages (GRUB).

Does efifb need more than just EFI GOP availability?