[Qemu-ppc] Booting Lubuntu 16.04 on qemu-system-ppc produces errors

[Andrew Randrianasulu]

Hello!

I was trying to to help Zoltan with his quest about implementing ati-vga 
device, and tried to boot PPC LiveCD.

First my 32-bit qemu from git build was just segfaulting, then I tried simpler 
iso (finnix) and found at least 
one error while booting to console:

./ppc-softmmu/qemu-system-ppc -M mac99,via=pmu -L ./pc-bios -cdrom 
~/finnix-ppc-110.iso -m 512  -display sdl,gl=on   -d guest_errors,unimp -boot d
invalid/unsupported opcode: 3f - 0e - 1a - 00 (fc200e9c) 204a73f0 1

Next, I tried similar line  but with G3 processor forced:

./ppc-softmmu/qemu-system-ppc -M mac99,via=pmu -L ../queue-vga/pc-bios -cdrom 
/mnt/sdb1/PPC-img/lubuntu-16.04-desktop-powerpc.iso -m 512  -display sdl,gl=on  
-device ati-vga,guest_hwcursor=true  -d guest_errors,unimp -boot d -cpu G3
invalid/unsupported opcode: 04 - 02 - 12 - 00 (10000484) 0fcf10f0 1
invalid/unsupported opcode: 04 - 02 - 12 - 00 (10000484) 1ffaf0f0 1
invalid/unsupported opcode: 04 - 02 - 12 - 00 (10000484) 204470f0 1
invalid/unsupported opcode: 04 - 02 - 12 - 00 (10000484) 0f95e0f0 1
invalid/unsupported opcode: 04 - 02 - 12 - 00 (10000484) 0f95e0f0 1


this booted up to (corrupted colors, but this was using fbdev X driver) LXde 
desktop.

qemu was up to commit f34edbc760b0f689deddd175fc08732ecb46665f

Currently will try to force r128 driver to load ....