On Fri, Dec 30, 2005 at 11:58:10AM -0600, Matt Sealey wrote:
>  
> 
> > -----Original Message-----
> > From: powerpc-discuss-bounces at opensolaris.org 
> > [mailto:powerpc-discuss-bounces at opensolaris.org] On Behalf Of 
> > Cyril Plisko
> > Sent: Friday, December 30, 2005 10:53 AM
> > To: Ken Mays
> > Cc: powerpc-discuss at opensolaris.org
> > Subject: Re: [powerpc-discuss] PowerPC MMU and Solaris 2.5.1 PPC
> > 
> > 
> > > 2. Is it 'possible' to get Solaris 2.5.1 PPC working at all 
> > on the Genesi ODW? What stops us from doing so if we brought 
> > in the right resources to make it happen??
> > 
> > That's interesting question... I think that at wouldn't run "as is".
> > When 2.5.1 was released there were PowerPC 601, 603 and 604. That is all. 
> > So the 
> > chances that it will "just run" are slim.
> 
> The 603 and G3/G4 cores don't have much difference in them when it
> comes to thinks like the MMU and so on - the PowerPC 32bit architecture
> is so rigidly defined to a point, that you should be able to run any
> old code on any of them. What might (and probably DOES) differ is cache
> setup since the 603 never had an L2 cache let alone L3, and perhaps the
> finer points of BAT registers (G4 has extended stuff) and some machine
> specific bits.

We run the exact same code on the efika as on the pegasos for example, and the
efika uses the MPC5200 which has a 603e core. The 601 i guess nobody wants to
use anymore, it was not yet really powerpc, and has a few things missing. The
linux kernel has a special case for the 601 for example.

Friendly,

Sven Luther


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