[SeaBIOS] No graphics with QEMU, coreboot, SeaBIOS und SeaVGABIOS

[Kevin O'Connor]

On Sun, Oct 05, 2014 at 10:24:20AM +0200, Paul Menzel wrote:
> Dear SeaBIOS folks,
> 
> testing QEMU with coreboot built from commit a296f9e3 (Kconfig: Allow
> native vga init to be selectable for SeaBIOS payload) [1] and SeaBIOS
> and SeaVGABIOS (selected in coreboot’s Payload menu), SeaBIOS does not
> display any graphics although the console says, it has initialized it.
[...]
>         $ qemu-system-i386 -bios build/coreboot.rom -hda /dev/zero -serial stdio
>         […]
>         Scan for VGA option rom
>         Running option rom at c000:0003
>         pmm call arg1=0
>         Running option rom at c980:0003
>         Start SeaVGABIOS (version rel-1.7.5-0-ge51488c-20141004_165959-my-qemu-system)

Note the above shows that two vga option roms got executed.  One was
the onboard vga rom that QEMU provides, and the second was seavgabios.

Try adding "-device cirrus-vga,romfile=" to your qemu command line to
force qemu to not provide an option rom in the vga pci rom bar.

-Kevin