bugGNU GRUB - Bugs: bug #52629, ieee1275 for 64-bit PowerPC (big...


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bug #52629: ieee1275 for 64-bit PowerPC (big endian): Invalid memory access on Power Mac G5

Submitted by:  A. Wilcox <awilfox>
Submitted on:  Sat 09 Dec 2017 05:23:51 AM UTC  
Category:  Booting Severity:  Major
Priority:  5 - Normal Item Group:  Hardware-specific
Status:  None Privacy:  Public
Assigned to:  None Originator Name: 
Open/Closed:  Open Release: 
Release:  2.02 Reproducibility:  Every Time
Planned Release:  None

Sat 09 Dec 2017 10:14:38 PM UTC, comment #1: 

I can confirm that an unhandled trap is also hit by OpenBIOS when trying to boot this ISO in qemu-system-ppc64 (with both OpenBIOS 1.1, and current git master).

A. Wilcox <awilfox>
Sat 09 Dec 2017 05:23:51 AM UTC, original submission:  

I'm the ppc64 maintainer for the Adélie Linux distribution.  We're trying to craft a bootable CD for the Power Mac G5 and IBM pSeries.  We don't have the pSeries here yet for testing, but we do have a Power Mac G5 (dual 2.0 GHz, PCI-X).

I'm seeing the following on-screen when booting either from OF (boot cd:,\boot\grubcore.img) or letting the machine boot from CD "normally" using the "C" key (tbxi):

Welcome to GRUB!

Invalid memory access at  %SRR0: 00000000.00000f20  %SRR1: 90000000.00810000

  1. >

This happens very early on.  The 32-bit PowerPC build that we have of grub 2.02 boots fine on the same hardware, so it seems specific to the 64-bit port.

I added "set debug=all" to the embedded image "early" config file, and rebooted.  I received the exact same output.  Please let me know if there is another (possibly undocumented?) method of causing GRUB to print more debug information.

A. Wilcox <awilfox>


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