MPC8245 vs XPC8245
PATCH 1/1 MPC8245 vs XPC8245
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PATCH 1/1 MPC8245 vs XPC8245
Review
Quoted 4 lines · In message <[email protected]> you wrote:
Quoted 1 line
(quoted diff) +3
-0+* Patch by Marc Leeman, 05 Nov 2003: + - enable all 4 PCMBRW buffers for the MPC8245 processor since it + only affects the XPC8245 processors
Please explain which problem you are trying to fix?
Best regards,
Wolfgang Denk
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PATCH 1/1 MPC8245 vs XPC8245
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Quoted 1 line
Please explain which problem you are trying to fix?
Not trying, is fixed :)
It concerns DMA operations where an external device is reading memory from the ppc.
The patch is already in your CVS since June (IIRC). Since then I noticed that the bug only affects XPC8245 processors (from the type numbers and the age of the boards, I would think they are old (prototype) versions).
The newer processors do not have this bug anymore and I have disabled this patch for 4 months now on our firmware: none of the newer production processors seems to be affected.
I don't know if many ppl are still working with XPC versions of the 8245. This is the reason I put #if 0 #endif around the silicon work around the code again. Feel free to suppress the code completely.
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ash nazg durbatul?k, ash nazg gimbatul,
ash nazg thrakatul?k agh burzum-ishi krimpatul
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ash nazg durbatul?k, ash nazg gimbatul, ash nazg thrakatul?k agh burzum-ishi krimpatul
PATCH 1/1 MPC8245 vs XPC8245
In reply to Marc LeemanQuoted 4 lines · In message <[email protected]> you wrote:
* Patch by Marc Leeman, 05 Nov 2003:
- enable all 4 PCMBRW buffers for the MPC8245 processor since it=20 only affects the XPC8245 processors
Thanks, added.
Best regards,
Wolfgang Denk
Signature · 3 lines
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