[OpenBIOS] SPARC64 device tree model - SBUS or PCI?

Mark Cave-Ayland mark.cave-ayland at ilande.co.uk
Sun Feb 26 13:13:43 CET 2012

Hi all,

I've been spending some time recently trying to figure out why the 
SPARC64 serial console doesn't appear to work outside of OpenBIOS under 
QEMU, and so was looking at the example device trees in the Debian 
sparc-utils package.

Now AFAICT the examples/ultra2 file represents an Ultra 2 SBUS which is 
different from QEMU which I believe is attempting to emulate an Ultra 2 
PCI (Sabre) system. I know there was some talk previously on the mailing 
list about which device model to use moving forward, but I don't 
remember a definite decision being made. If QEMU is going to continue to 
use a PCI-based system, does anyone have a copy of the prtconf output 
for such a system?



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