PPC405GPr with RTEMS + Support?

[Joel Sherrill <joel@OARcorp.com>]

Greg Broten wrote:
> Joel:
>   I can understand Gene's confusion since RTEMS lists support for the
> PPC 4xx series.  IBM defines about 8 processors in this series starting
> with the 403GCX, ranging to the 440GP.  
>  Without downloading RTEMS is there anyway of determining which specific
> chip/board combinations are supported? 

The best way without a full download is probably to just browse CVS.

http://www.rtems.com/cgi-bin/cvsweb.cgi/rtems/c/src/lib/libcpu/powerpc/

is the libcpu directory where the model specific issues are addressed.
configure.ac looks at the RTEMS_CPU_MODEL and picks the subdirectories
that are needed.  It looks to me that the 405 is supported as a
variant of the 403 and uses the same ppc403 subdirectory.

http://www.rtems.com/cgi-bin/cvsweb.cgi/rtems/c/src/lib/libbsp/powerpc/

is where all the full PowerPC BSPs are found.  Sometimes a support
for a CPU model is submitted without an accompanying BSP.  This is
common when a board is proprietary.

Thomas Doerfler provides BSP development and wrote the helas403
BSP originally.  He would be a good resource also.  Wow! Thomas
submitted that in Sept 98.  Time flies.

--joel

> Greg B.
> 
> And the major difference between the 405GP and 405GPr seems to be speed
> (up to 400MHz from 266MHz)
>   
> On Thu, 2004-08-05 at 10:13, Joel Sherrill  wrote:
> 
>>I must have missed the initial post. :(
>>
>>There is a 405GP BSP in the tree now.  How is this part different?
>>
>>And yes.  Joel/OAR still offers support and development.
>>At this point, there are also others who offer BSP
>>development.
>>
>>--joel
>>
>>
>>Greg Broten wrote:
>>
>>>Gene:
>>>  David Querbach, at Real Time Systems, did the port of RTEMS to the
>>>MPC555.  He certainly could help you with the 405Gpr.
>>>  See this website:  http://www.realtime.bc.ca/
>>>
>>>Greg B.
>>>
>>>PS
>>>Love to see RTEMS for the PPC405Gpr.  And by the way if you are looking
>>>at a board such at the 405Gpr from Embedded Planet, you can download
>>>TimeSys Linux for free for that board.
>>>
>>>
>>>On Wed, 2004-08-04 at 14:04, Smith, Gene wrote:
>>>
>>>
>>>>Does anybody on the list know if the IBM (but soon to be AMCC) PowerPC 
>>>>device PPC405GPr will run RTEMS? It also has a built-in ethernet 
>>>>controller. The part is described here:
>>>>
>>>>http://www-3.ibm.com/chips/techlib/techlib.nsf/products/PowerPC_405GP_Embedded_Processor
>>>>
>>>>There is (or was) a demo/eval board available commonly called "walnut" 
>>>>but I don't see a BSP on RTEMS site for it. Seems to be mostly supported 
>>>>by QNX.
>>>>
>>>>Also, does OAR or Joel still provide RTEMS support?
>>>>
>>>>Thanks,
>>>>-gene
>>>
>>>
> 


-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel at OARcorp.com                 On-Line Applications Research
Ask me about RTEMS: a free RTOS  Huntsville AL 35805
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