[Qemu-devel] [Bug 623852] Re: PPC emulation loops on booting a FreeBSD kernel

[Nigel Horne]

Latest version from git, using FreeBSD10.0:

qemu-system-ppc64 -cdrom FreeBSD-10.0-RELEASE-powerpc-disc1.iso -hda
freebsd10.0-ppc -m 256 -boot d -k en-us:


SLOF **********************************************************************
QEMU Starting
 Build Date = Mar 13 2015 22:37:28
 FW Version = git-c89b0df661c0a6bf
 Press "s" to enter Open Firmware.

Populating /vdevice methods
Populating /vdevice/address@hidden
Populating /vdevice/address@hidden
Populating /vdevice/address@hidden
Populating /vdevice/address@hidden
       SCSI: Looking for devices
          8000000000000000 DISK     : "QEMU     QEMU HARDDISK    2.3."
          8200000000000000 CD-ROM   : "QEMU     QEMU CD-ROM      2.3."
Populating /address@hidden
 Adapters on 0800000020000000
                     00 0000 (D) : 1234 1111    qemu vga
                     00 0800 (D) : 106b 003f    serial bus [ usb-ohci ]
No NVRAM common partition, re-initializing...
Installing QEMU fb


Scanning USB 
  OHCI: initializing
    USB Keyboard 
    USB mouse 
No console specified using screen & keyboard
     


  Welcome to Open Firmware

  Copyright (c) 2004, 2011 IBM Corporation All rights reserved.
  This program and the accompanying materials are made available
  under the terms of the BSD License available at
  http://www.opensource.org/licenses/bsd-license.php


Trying to load:  from: cdrom ...   Successfully loaded
Trying to write invalid spr 540 (0x21c) at 0000000000731954
 

( 700 ) Program Exception [ 7319dc ]


    R0 .. R7           R8 .. R15         R16 .. R23         R24 .. R31
0000000000000000   0000000000000000   0000000000000000   000000000048099c   
00000000009d9e50   0000000000000000   0000000000000000   00000000009d9ef4   
0000000000a5e160   000000000000bf30   0000000000000000   00000000007319dc   
00000000009d9f2c   0000000000000000   0000000000000000   000000000048099c   
000000000048099c   0000000000000000   0000000000c0a000   0000000000000000   
00000000007319dc   0000000000000000   0000000000000004   0000000000000000   
000000000048099c   0000000000000000   0000000000000000   0000000000002000   
00000000009d9ef4   0000000000000000   0000000000000000   00000000009d9e50   

    CR / XER           LR / CTR          SRR0 / SRR1        DAR / DSISR
        84000022   0000000000731a14   0000000000731954   0000000000000000   
0000000000000000   00000000007319dc   0000000000082000           00000000

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https://bugs.launchpad.net/bugs/623852

Title:
  PPC emulation loops on booting a FreeBSD kernel

Status in QEMU:
  New

Bug description:
  Has anyone tried booting FreeBSD8.1-ppc under QEMU (Linux x86_64 host;
  PPC guest)?  I can get Linux/PPC to run fine, and FreeBSD8.1-i386 as
  well; but there seems to be a problem with whatever the FreeBSD8.1
  kernel does, that QEMU's PPC emulation can't handle.

  I am using the latest version of QEMU from GIT as of 25/8/10.  I don't
  know how to get a "git commit hash", so I can't quote it.

  The kernel starts OK then loops after "Kernel entry at 0x100100 ...".

  The command I am running is

  qemu-system-ppc -cdrom FreeBSD-8.1-RELEASE-powerpc-disc1.iso -hda
  freebsd8.1-ppc -m 94 -boot d"

  I obtained the kernel from
  ftp://ftp.freebsd.org/pub/FreeBSD/releases/powerpc/ISO-
  IMAGES/8.1/FreeBSD-8.1-RELEASE-powerpc-disc1.iso.

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