Re: Issue observed when tried to launch qemu for ppc

[Murali Krishna]

Thanks for the response.

I tried to launch the qemu with ref405ep and got the below error.

[osman@osci ~]$ qemu-system-ppc -nodefconfig -no-user-config -nodefaults -no-reboot -nographic -serial stdio -cpu 405D2 -machine ref405ep -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: Could not load PowerPC BIOS 'ppc405_rom.bin'
[osman@osci ~]$
[osman@osci ~]$ qemu-system-ppc -nodefconfig -no-user-config -nodefaults -no-reboot -nographic -serial stdio -machine ref405ep -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: Could not load PowerPC BIOS 'ppc405_rom.bin'
[osman@osci ~]$

Same error message is observed even with "taihu" as well.

Thanks & Regards,

Muralikrishna CH

On Fri, Dec 13, 2019 at 5:56 PM BALATON Zoltan <address@hidden> wrote:

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

--

Thanks & Regards,
Muralikrishna CH