Re: QEMU and E500

[BALATON Zoltan]

On Sun, 6 Aug 2023, Nicholas Piggin wrote:
> On Fri Aug 4, 2023 at 2:06 AM AEST, Andrea Palmatè wrote:
> > Of course I did..
> > There are no great examples that use that machine.. That link is one of the
> > few I've found online. And no one of them are using an ISO to boot via CD
>
> How is it not booting? Can you take the kernel from the ISO and boot it
> directly with -kernel? Linux needs CONFIG_PPC_QEMU_E500=y which might
> not be set.

This wasn't clear from the report and took me some time to get too but the 
keyword is -cpu e500v2 which looks like this CPU is not well supported by 
Linux so one needs to dig up some experimental kernel for it then find the 
problem that there's no user space for it too. I think that's the main 
problem here in my understanding but not too sure either.

Just e500 and e500mc boots OK with an appropriate distro that supports it.

Regards,
BALATON Zoltan

> > Il giorno gio 3 ago 2023 alle ore 17:10 BALATON Zoltan <balaton@eik.bme.hu>
> > ha scritto:
> >
> > > On Wed, 2 Aug 2023, Andrea Palmatè wrote:
> > > > I'm trying in all ways to emulate a machine with e500 using an x86 host.
> > > > I've tried several distro (SPE too) but no luck. The machine will not
> > > boot
> > > > using an ISO. I've tried both ppce500 and mpc8544ds. I need to emulate
> > > the
> > > > cpu e500v2 because I need to do some tests with linux.
> > > > If I add the ISO and also the HD they are seen in virtio info but there
> > > is
> > > > no way to boot from them.
> > >
> > > Have you tried what's documented here?
> > > https://www.qemu.org/docs/master/system/ppc/ppce500.html
> > >
> > > Regards,
> > > BALATON Zoltan