[OpenBIOS] [sparc64] Problematic pci at 0 and pci nodes in the device tree

Mark Cave-Ayland mark.cave-ayland at siriusit.co.uk
Thu Jan 22 12:33:13 CET 2009

 > Hi,
 > I have the following problem with the OpenBIOS device tree (the
 > current Qemu version):
 > In the root directory, there are currently two pci nodes:
 > ffd97778 pci at 0
 > ffd98808 pci
 > The "screen" alias is defined as:
 > /pci/pci/pci/QEMU,VGA
 > When HelenOS attempts to lookup this path, it fails, because it
 > matches /pci instead of /pci at 0 and /pci does not have any 
children. > HelenOS is normally designed to cope with ambiguous node 
names, but in > this case the /pci node matches and sends it to the 
wrong direction. I > think the "screen" alias should be either defined 
using the
 > non-ambiguous pci at 0 path components or the /pci node should not
 > exist at all.
 > Can you confirm this is a problem in the tree?

Hi Jakub,

I too am interested in getting Sparc64 working in Qemu in order to 
resurrect some old Solaris disk images I have here. Can you explain some 
more about the debugging methods you are using to analyse the forth 

At the moment I am struggling in that when running Qemu with "-vnc :1" 
on the command line, qemu-system-sparc64 simply hangs :(

Many thanks,


Mark Cave-Ayland
Sirius Corporation - The Open Source Experts
T: +44 870 608 0063

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