Re: Issue observed when tried to launch qemu for ppc

[BALATON Zoltan]

On Fri, 13 Dec 2019, Murali Krishna wrote:
> Upon launching qemu-system-ppc ( 2.6.2 ) with 4.4.198 kernel compiled by

2.6.2 is quite old although for 405 emulation likely not much has changed.

> Error message observed:
> [osman@osci ~]$ qemu-system-ppc -nodefconfig -no-user-config -nodefaults
> -no-reboot -nographic -serial stdio -cpu 405D4 -m 2047 -net
> nic,model=virtio,macaddr=$macaddr -net user$QEMU_HOSTFWD -drive
> file=powerpc-qemu.img,if=virtio,index=0,format=qcow2 -drive
> file=scratch.img,if=virtio,index=1,format=qcow2 -virtfs
> local,id=work,path=`pwd`,security_model=none,mount_tag=work -boot menu=off
> -kernel ppcqemu-vmlinux-stable
> qemu-system-ppc: Bus model not supported on OldWorld Mac machine

The default machine emulated by qemu-system-ppc is a G3 Macintosh 
(g3beige) which does not work with a 405 CPU. See

qemu-system-ppc -machine help

You need a board that supports 405 CPU, probably only ref405ep and taihu 
do. See qemu/hw/ppc/ppc405_boards.c

Regards,
BALATON Zoltan