Am Sonntag, den 05.10.2014, 10:39 -0400 schrieb Kevin O'Connor:
On Sun, Oct 05, 2014 at 10:24:20AM +0200, Paul Menzel wrote:
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.
With that option, no QEMU window is opened at all.
$ qemu-system-i386 -bios 20141003--coreboot--qemu-seabios-seavgabios-not-working.rom -hda /dev/zero -serial stdio -device cirrus-vga,romfile= […] Scan for VGA option rom Running option rom at c000:0003 Start SeaVGABIOS (version rel-1.7.5-0-ge51488c-20141004_165959-mattotaupa) enter vga_post: a=00000000 b=0000ffff c=00000000 d=0000ffff ds=0000 es=f000 ss=0000 si=00000000 di=00007020 bp=00000000 sp=00006e1a cs=f000 ip=d32d f=0000 coreboot vga init Found FB @ fc000000 800x600 with 32 bpp (3200 stride) set VGA mode 140 Attempting to allocate VGA stack via pmm call to f000:d3a2 […]
Thanks,
Paul