Re: [PATCH v3 00/13] Pegasos2 clean up and pegasos1 emulation

[Yogesh Vyas <yvyas1991@gmail.com>]

On 10/26/25 4:39 PM, BALATON Zoltan wrote:
> On Sun, 26 Oct 2025, Yogesh Vyas wrote:
>> On Sun, Oct 19, 2025 at 5:37 PM BALATON Zoltan <balaton@eik.bme.hu> 
>> wrote:
>>> On Sun, 19 Oct 2025, Yogesh Vyas wrote:
>>>> When I run QEMU with the ROM option, the machine boots successfully 
>>>> with
>>>> the below command:
>>>>
>>>> qemu-system-ppc64 -machine pegasos2 -bios pegasos2.rom \
>>>>                  -cdrom debian-8.11.0-powerpc-netinst.iso \
>>>>                  -device VGA,romfile="" -serial stdio
>>>>
>>>> However, when I try to boot the machine without the ROM using VOF, the
>>>> machine does not come up and no logs appear on stdout:
>>>>
>>>> qemu-system-ppc64 -machine pegasos2 -serial stdio \
>>>>                  -kernel vmlinuz-chrp.initrd -append "---" \
>>>>                  -cdrom debian-8.11.0-powerpc-netinst.iso
>>>>
>>>> Please let me know if I am missing any parameters or setup required 
>>>> for
>>>> booting via VOF on Pegasos2.
>>>>
>>>> Documentation referred: qemu/docs/system/ppc/amigang.rst
>>>
>>> Maybe you did not use the right vmlinuz-chrp.initrd. Pegasos2 is a 
>>> 32 bit
>>> machine so you need /install/powerpc/vmlinuz-chrp.initrd for it (see in
>>> the /install/pegasos script that is used with firmware). Even if you 
>>> call
>>> it from qemu-system-ppc64 which includes both 32 bit and 64 bit 
>>> machines
>>> but does not make 32 bit machines 64 bit so you still need the 32 
>>> bit OS.
>>>
>>>
>> Hi Balaton,
>> I am using 32bit images only and looks like VOF boot works with the 
>> distro
>> provided Qemu (both ppc and pp64), however doesn't work with upstream 
>> Qemu
>> for VOF.
>
> That's odd, it works for me with QEMU master so I can't reproduce this.
>
>> yogi@fedora:~/work/images$ file vmlinuz-chrp.initrd
>> vmlinuz-chrp.initrd: ELF 32-bit MSB executable, PowerPC or cisco 4500,
>> version 1 (SYSV), statically linked, not stripped
>
> The file command says 32-bit for both 
> /install/powerpc/vmlinuz-chrp.initrd and 
> /install/powerpc64/vmlinuz-chrp.initrd but only the first one should 
> work. Can you double check you have the right vmlinuz-chrp.initrd 
> file? But if you say the same file works with 9.2.4 I have no idea 
> why. I see these files on the CD
>
>   9301172 Jun 19  2018 /install/powerpc/vmlinuz-chrp.initrd
>  10534888 Jun 19  2018 /install/powerpc64/vmlinuz-chrp.initrd


I am also using the same file:

yogi@fedora:~/work/images$ ls -lrt vmlinuz-chrp.initrd
-r--r--r--. 1 yogi yogi 9301172 Oct 18 23:50 vmlinuz-chrp.initrd

>
> File command says:
>
> vmlinuz-chrp.initrd:   ELF 32-bit MSB executable, PowerPC or cisco 
> 4500, version 1 (SYSV), statically linked, not stripped
> vmlinuz-chrp.initrd64: ELF 32-bit MSB executable, PowerPC or cisco 
> 4500, version 1 (SYSV), statically linked, not stripped
>
> but only the first from the powerpc directory is supposed to work and 
> it does boot for me with QEMU master. You can also check following the 
> other way described in qemu/docs/system/ppc/amigang.rst using -bios 
> pegasos2.rom which loads the correct image from the CD. Does that work?

Yes, I had mentioned it in my first mail that ROM option works as 
expected. It is only an issue when using VOF with upstream Qemu.

Could you please share your Qemu command line if it's different from the 
one mentioned in the documentation.

Regards,

Yogesh Vyas

>
> Regards,
> BALATON Zoltan