Re: new powerpc hardware

[Allen Briggs <briggs%netbsd.org@localhost>]

On Tue, Nov 11, 2008 at 09:06:25PM +0900, Toru Nishimura wrote:
> I think there are at least three different "MMU architectures" in
> Power/PowerPC and NetBSD currently supports only one of
> them.
> 
> 1. OEA (correct term?) in the original Power aspect of address
> space and PTE management; original PPC and G2/G3/e300/e600
> variants.
> 2. MPC860 32bit software controlled i/D TLB management scheme.
> 3. BookE specification, simplied 32bit address space management
> with software controlled i/D TLB.
> 
> In my knowledge the last one covers e500 and 440 while I am not
> sure how close they are in pmap.c coding practice.

The PowerPC 405 is in-tree and is similar to 440, but there are
some differences.  I'm not sure how similar e500 is.

-allen

-- 
Allen Briggs  |  http://www.ninthwonder.com/~briggs/  |  
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