[RFC: PATCH 08/13] powerpc/476: define specific cpu table entry for DD1 and DD1.1 cores

Dave Kleikamp shaggy at linux.vnet.ibm.com
Tue Mar 2 10:43:36 EST 2010


On Mon, 2010-03-01 at 15:24 -0500, Josh Boyer wrote:
> On Mon, Mar 01, 2010 at 02:13:52PM -0500, Dave Kleikamp wrote:
> >powerpc/476: define specific cpu table entry for DD1 and DD1.1 cores
> >
> >From: Benjamin Herrenschmidt <benh at kernel.crashing.org>
> >
> >There are still some unstable bits on the DD1 and DD1.1 cores.  Don't use
> >the FPU or the tlbivax operation.  Define CPU_FTR_476_DD1 and
> >CPU_FTR_476_DD1_1 for additional workarounds in later patches.
> >
> >The DD1 core requires workarounds triggered by both CPU_FTR_476_DD1
> >and CPU_FTR_476_DD1_1.  the DD1.1 core only needs CPU_FTR_476_DD1_1
> >defined.
> 
> DD1, DD1.1, and all others have the same PVR value?  How do you tell which
> core version you have?

I seemed to have lost the change to the DD1.1 PVR value.  I originally
coded it this way while I was waiting to find out what it was.  DD1.1 is
0x11A52040.  I don't know a value for the future versions, so that will
have to be filled in later.  Actually, I should probably use 0x11A52000,
since that's what's defined in reg.h.

Thanks,
Shaggy
-- 
David Kleikamp
IBM Linux Technology Center



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