Thank you for your responses, Wolfgang.

I still have some confusion; I was able to build and run a xenomai 2.2.0 patched linux 2.6.14 kernel on a Apple EMac, which has a 7447A processor in it - with no changes, and was able to get good latency results in my tests.


I am currently playing with a 8641D dual core power pc, it is basically two 7448 processors in one package which is almost identical to the 7447A, along with peripherals (ethernet/serial/pcie). Yet I can't seem to get xenomai compiled for it, even in non-smp mode. The 8641D needs a newer kernel than 2.6.14 ( 2.6.19 is okay ).
What should I do?

Regards,
Jeff Koftinoff

Wolfgang Grandegger wrote:
Heikki Lindholm wrote:
Jeff Koftinoff kirjoitti:
Hi Everyone. I would really like to get Xenomai working on the new Freescale 8641D dual core G4.

I see that for linux 2.6.19, Xenomai does not support CONFIG_PPC_MERGE or architectures=powerpc instead of 'ppc'.

Weren't there some experimental powerpc ports already posted some time ago (by Wolfgang, I think)? See the list archive.

I started porting to the powerpc tree some time ago but realized that it was not straight-forward. My quick hack didn't boot and then I stopped because of lack of free time.

Please forgive my ignorance; What exactly is the difference between arch=ppc and arch=powerpc?

Mainly the use of the generic IRQ layer and time of day. It requires an
in-depth review and design of the corresponding Adeos/I-pipe implementation. Well, the general design is already there for x86 implemented by Philippe but needs to be adapted. Nevertheless, the port is planned for the near future. Funding would help, of course.

What is involved in changing adeos to work under arch=powerpc on the 8641D in single core mode?

How much more work is involved in changing adeos to support SMP on powerpc?

The 64-bit powerpc target is under powerpc and supports SMP. The work required somewhat depends on the specific architecture implementation of SMP, but shouldn't be too difficult.

That's also my impression, and a system for porting and testing is also required.

Wolfgang.



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