On Mon, Mar 07, 2005 at 08:13:54 -0500, Michael wrote:

> OBP 3.x and OpenFirmware seem very similar, in fact similar enough
> that macppc and sparc64 can share some drivers which need limited
> OF/OBP access, [...]
[...]
> The firmware itself ( OBP 2.something ) seems a little different
> too,

OBP2 is OpenBoot from before OFW.  It's different.  The only Sparc OFW
machines that I know of are Javastations.


> - how can I access device properties from the OBP 2.x prompt?

.attribites


> - for cgsix ( more hard-coded geometry, I've seen more than one
> cgsix running in something else than 1152x900 so we should probably
> get rid of this ) - which forth words/properties return display
> geometry information and exist on both OBP2 and 3? 

You'd better get OBP2 docs from doc.sun.com.



> - what exactly is the difference between prom_getprop() and
> OF_getprop()? The latter works on sparc64 and macppc, the former
> apparently on sparc and sparc64 - is there something that works on
> all three?

prom_getprop can handle different prom versions.  See
sys/arch/sparc/sparc/promlib.c


SY, Uwe
-- 
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