[Qemu-devel] SPARC64: unable to boot OpenBIOS from git master

[Mark Cave-Ayland]

Hi all,

I've been experimenting with SPARC64 under QEMU, and with current git 
master I am unable to boot OpenBIOS at all with the following error:

OpenBIOS for Sparc64
Unhandled Exception 0x0000000000000032
PC = 0x00000000ffd19d84 NPC = 0x00000000ffd19d88
Stopping execution

Using git bisect indicates that the problem lies with the following commit:


commit d5f27e88699f14c802d66c01de70e5ea37b7153a
Author: Michael S. Tsirkin <address@hidden>
Date:   Tue Feb 21 15:57:58 2012 +0200

    pci: set memory type for memory behind the bridge

    As we make upper bits in IO and prefetcheable memory
    registers writeable, we should declare support
    for 64 bit prefetcheable memory and 32 bit io
    in the bridge.

    This changes the default for apb, dec, but I'm guessing
    they got the defaults wrong by accident.
    Alternatively, we could let bridges declare lack of
    64 bit support and make the upper bits read-only zero.

    With this applied, we can drop these bits
    from express code.

    Reported-by: Gerd Hoffmann <address@hidden>
    Signed-off-by: Michael S. Tsirkin <address@hidden>

    Could someone familiar with apb,dec ack this please?
    Signed-off-by: Anthony Liguori <address@hidden>


Does anyone have an idea as to whether this is something that needs to 
be fixed in QEMU or OpenBIOS?


Many thanks,

Mark.