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Re: Powerpc grub_func_test never exits

From: John Paul Adrian Glaubitz
Subject: Re: Powerpc grub_func_test never exits
Date: Fri, 14 Jan 2022 09:45:15 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.4.1

Hi Glenn!

On 1/8/22 01:34, Glenn Washburn wrote:
> I've attached an iso that will reproduce this issue in Debian's QEMU
> 5.2 and 6.1. The QEMU command to run is (not all options may be needed):
> $ qemu-system-ppc -M mac99,via=pmu -m 2048M -nographic -monitor
>     file:/dev/null -fw_cfg name=etc/sercon-port,string=0 -serial null
>     -serial file:/dev/stdout -hda grub.iso -boot c
> This issue is not present in other QEMU tests, which could indicate a
> GRUB issue. But if so, it doesn't seem to present itself on any other
> target that I've been testing. I suspect there's a bug in GRUB that is
> PPC specific that corrupts firmware memory such that halt doesn't
> happen.
> I'm curious how this would behave on real hardware, does it still hang?
> Getting this resolved will allow my testing to properly see this as a
> test failure and not a non-test error.

I have burnt the ISO to a CD-R now and booted my iBook G4 with it.

It boots but gets stuck at "Welcome to GRUB!". I can hear CD-ROM access noises
from time to time but no changes on the screen so far. I'll let it running
for some time.

Let me know if you want me to try anything else.


 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer -
`. `'   Freie Universitaet Berlin -
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913

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