[PATCH] General CHRP/MPC5K2 Platform and drivers support - to comment

Becky Bruce Becky.Bruce at freescale.com
Wed Oct 25 02:01:56 EST 2006

On Oct 24, 2006, at 10:44 AM, Matt Sealey wrote:

> Paul Mackerras wrote:
>> Matt Sealey writes:
>> "PowerPC" is the name of the instruction set architecture, "POWER" is
>> the name of some specific implementations of the PowerPC architecture
>> made by a certain large multinational computer company.  Unless  
>> you're
>> talking about the really really old ISA that was the predecessor of
>> PowerPC, that is. :)
> http://www.power.org/news/articles/new_brand/#isa
> I'm talking about the one they consolidated from all the different  
> specs
> Freescale, AMCC and IBM had about what makes a PowerPC processor.  
> Since
> POWER is part of it and it's all Power.org now.. they seem to have  
> changed
> the name.
> I don't think they have actually added anything new, that wasn't there
> before, just consolidated it. You won't seen an IBM chip with SPE  
> or VLE
> unless they license the gaggle of patents Freescale have on those
> units, maybe.. but there is always a possibility. All new chips are
> being called Power (not POWER).

The ISA version 2.03 that you are talking about does, in fact, rename  
it to "Power ISA" (big "P" little "ower") from "PowerPC ISA".  This  
spec is mostly a big glom of all of FSL and IBM's architecure  
documentation, although there were some minor changes made and some  
things were added.  If you read the spec carefully (which, btw, I do  
*not* recommend, as it is about 900 pages of spaghetti  
documentation), you will find things in there that do not exist in  
any implemented processor to date.


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