Re: [PATCH qemu] spapr: Force 32bit when resetting a core

[Mark Cave-Ayland]

On 17/01/2022 14:52, Cédric Le Goater wrote:

> Initially, I installed a debian11 ppc64 on a QEMU mac99/970 machine.
> Something went wrong with the bootloader at installation and I was
> stuck with memory boot. I didn't manage to restore a decent boot
> setup even after that.

Interesting. I had a similar issue using the debian ports images on mac99/ppc32: 
everything went well all up until the bootloader installation which failed. When I 
looked at the installer logs IIRC there was a kernel panic somewhere in the hfs 
module which I figured is likely an emulation bug somewhere.

> I stole the HFS partition from a real G5 and after some manual tweaks
> on the disk, I got it working.
>
> There are a few harmless errors :
>      >> =============================================================
>      >> OpenBIOS 1.1 [Jan 15 2022 14:23]
>      >> Configuration device id QEMU version 1 machine id 3
>      >> CPUs: 1
>      >> Memory: 1024M
>      >> UUID: 00000000-0000-0000-0000-000000000000
>      >> CPU type PowerPC,970
>      milliseconds isn't unique.
>      Welcome to OpenBIOS v1.1 built on Jan 15 2022 14:23
>      Trying hd:,\\:tbxi...
>      >> switching to new context:
>      call-method color!: exception -21
>      >> call-method color! failed with error ffffffdf
>      call-method color!: exception -21
>      ...
>      call-method block-size: exception -21
>      >> call-method block-size failed with error ffffffdf
>      call-method block-size: exception -21
>      >> call-method block-size failed with error ffffffdf
>
> I guess the initial problem is in the debian installer. I will report.
>
> > I can certainly help out if you get stuck. If this is a more obscure combination 
> > then is it worth adding a tiny image for use with avocado?
>
> No. It is really a standard setup :
>
>      root@vm02:~# mac-fdisk -l /dev/sda
>      /dev/sda
>              #                    type name                length   base    ( size )  
> system
>      /dev/sda1     Apple_partition_map Apple                   63 @ 1       ( 31.5k)  
> Partition map
>      /dev/sda2               Apple_HFS bootstrap           500001 @ 64      (244.1M)  
> HFS
>      /dev/sda3         Apple_UNIX_SVR2 untitled           39634766 @ 500065  ( 
> 18.9G)  Linux native
>      /dev/sda4         Apple_UNIX_SVR2 swap               1808208 @ 40134831 
> (882.9M)  Linux swap
>      /dev/sda5              Apple_Free Extra                    1 @ 41943039 (  
> 0.5k)  Free space
>      Block size=512, Number of Blocks=41943040
>      DeviceType=0x0, DeviceId=0x0
>      root@vm02:~# cat /proc/cpuinfo
>      processor    : 0
>      cpu        : PPC970, altivec supported
>      clock        : 900.000000MHz
>      revision    : 2.2 (pvr 0039 0202)
>      timebase    : 100000000
>      platform    : PowerMac
>      model        : PowerMac3,1
>      machine        : PowerMac3,1
>      motherboard    : PowerMac3,1 MacRISC MacRISC2 Power Macintosh
>      detected as    : 0 ((null))
>      pmac flags    : 00000000
>      pmac-generation    : NewWorld
>      root@vm02:~# uname -a
>      Linux vm02 5.15.0-2-powerpc64 #1 SMP Debian 5.15.5-2 (2021-12-18) ppc64 
> GNU/Linux

Fantastic! Glad everything is all working for you :)


ATB,

Mark.