[Xenomai] Xenomai 2.X on Freescale QorIQ T2080 processor

[Xenomai] Xenomai 2.X on Freescale QorIQ T2080 processor

[Pampolini Matteo]

Hello there,

do you know if all around the world someone is working to port Xenomai 2.X on Freescale QorIQ T2080 processor?
Because this processor does not appear in the list of supported ones?

If yes, would it be possible to know which patch is used? And if no, may you please point me in the right direction
to create it by myself and then give it back to community?

Many thanks in advance for your answer,

Matteo
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Re: [Xenomai] Xenomai 2.X on Freescale QorIQ T2080 processor

[Philippe Gerum]

On 11/07/2014 02:00 PM, Pampolini Matteo wrote:
> Hello there,
> 
> do you know if all around the world someone is working to port Xenomai
> 2.X on Freescale QorIQ T2080 processor?
> Because this processor does not appear in the list of supported ones?
> 
> If yes, would it be possible to know which patch is used? And if no, may
> you please point me in the right direction
> to create it by myself and then give it back to community?
> 

You did not mention which kernel release was of interest, so I'll assume
3.14. This patch is the right starting point for 3.14:

http://download.gna.org/adeos/patches/v3.x/powerpc/ipipe-core-3.14.17-powerpc-4.patch

Then add the few commits that piled up in the I-pipe git tree since tag
"ipipe-core-3.14.17-powerpc-4", which the patch mentioned above
corresponds to: http://git.xenomai.org/ipipe.git/log/?h=ipipe-3.14
Or wait until drop -5 appears in the download area, they will be included.

Then have a look at the PIC code for making it aware of the interrupt
pipeline, this beast likely sports a MPIC (just a guess), in which case
the work to support the "generic" MPIC is done already. Having a look at
the error interrupt handling for freescale's PIC chips in sysdev/ may be
a good idea too.

Another interesting part is in head_fsl_booke.S, in case this platform
has additional exception vectors which might need to be pipelined.

There will be other issues, but this is a starting point.

-- 
Philippe.

Re: [Xenomai] Xenomai 2.X on Freescale QorIQ T2080 processor

[Pampolini Matteo]

Hi Philippe,

many many thanks for your quick and exhaustive reply, I will start
working on this,
in case of troubles I will ask again for your kind help.

Regards, Matteo

On 07/11/2014 21:34, Philippe Gerum wrote:
> On 11/07/2014 02:00 PM, Pampolini Matteo wrote:
>> Hello there,
>>
>> do you know if all around the world someone is working to port Xenomai
>> 2.X on Freescale QorIQ T2080 processor?
>> Because this processor does not appear in the list of supported ones?
>>
>> If yes, would it be possible to know which patch is used? And if no, may
>> you please point me in the right direction
>> to create it by myself and then give it back to community?
>>
> You did not mention which kernel release was of interest, so I'll assume
> 3.14. This patch is the right starting point for 3.14:
>
> http://download.gna.org/adeos/patches/v3.x/powerpc/ipipe-core-3.14.17-powerpc-4.patch
>
> Then add the few commits that piled up in the I-pipe git tree since tag
> "ipipe-core-3.14.17-powerpc-4", which the patch mentioned above
> corresponds to: http://git.xenomai.org/ipipe.git/log/?h=ipipe-3.14
> Or wait until drop -5 appears in the download area, they will be included.
>
> Then have a look at the PIC code for making it aware of the interrupt
> pipeline, this beast likely sports a MPIC (just a guess), in which case
> the work to support the "generic" MPIC is done already. Having a look at
> the error interrupt handling for freescale's PIC chips in sysdev/ may be
> a good idea too.
>
> Another interesting part is in head_fsl_booke.S, in case this platform
> has additional exception vectors which might need to be pipelined.
>
> There will be other issues, but this is a starting point.
>

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