PowerPC Cache Warning Help Request

[Gedare Bloom]

If you do the legwork now, they could make reasonable GCI tasks if we
decide to participate and are accepted.
-Gedare

On Mon, Oct 20, 2014 at 1:20 PM, Joel Sherrill
<joel.sherrill at oarcorp.com> wrote:
>
> On 10/20/2014 12:09 PM, Gedare Bloom wrote:
>> Cache manager implementations are a perennial open project.
> +1
>
> In this case,we only have ten RTEMS_CPU_MODELs which are not
> addressed.  There are currently two blocks of code in the file. One
> is protected by this:
>
> #if defined(ppc603) || defined(ppc603e) || defined(mpc8260)
>
> And the other by this:
>
> #elif ( defined(mpx8xx) || defined(mpc860) || defined(mpc821) )
>
> My guess with no research is that the first block of code is also
> appropriate for these RTEMS_CPU_MODELs:
>
> e500
> mpc604
> mpc7400 mpc7455 mpc750
> qoriq
> mpc55xx
>
> A quick google makes me pretty confident that the mpc690 and mpc7* models
> belong in the ppc603 HID0 block.
>
> I do not have a guess about these
>
> ppc405 ppc440 mpc555
>
> If we have to implement code to support something new, then I don't want
> to do it. If we have the code and just need to check to see if more needs to
> be added to the conditional, then we should.
>
> --joel
>
>> On Mon, Oct 20, 2014 at 11:19 AM, Joel Sherrill
>> <joel.sherrill at oarcorp.com> wrote:
>>> On 10/20/2014 10:08 AM, Sebastian Huber wrote:
>>>> On 20/10/14 16:58, Joel Sherrill wrote:
>>>>> On October 20, 2014 9:41:57 AM CDT, Sebastian Huber <sebastian.huber at embedded-brains.de> wrote:
>>>>>> Since nobody missed the unimplemented cache manager functions in
>>>>>> several years
>>>>>> it should be safe so simply remove this #warning.
>>>>> You didn't notice it for qoriq or e500 so years is an exaggeration for some models.
>>>> The QorIQ BSP is from 2011.
>>>>
>>>>> Take a look at the BSPs impacted. I don't care particularly about older CPU models but some are recent and should be addressed.
>>>>>
>>>>> After that dropping the warning is OK by me.
>>>>>
>>>> The useful functions are implemented and in case someone really needs the
>>>> exotic ones he should notice it if the function is a simple "blr".
>>>>
>>> OK. I will just remove the warning.
>>>
>>> Do we want to add a PR or Open Project idea for this?
>>>
>>> --
>>> Joel Sherrill, Ph.D.             Director of Research & Development
>>> joel.sherrill at OARcorp.com        On-Line Applications Research
>>> Ask me about RTEMS: a free RTOS  Huntsville AL 35805
>>> Support Available                (256) 722-9985
>>>
>>> _______________________________________________
>>> devel mailing list
>>> devel at rtems.org
>>> http://lists.rtems.org/mailman/listinfo/devel
>
> --
> Joel Sherrill, Ph.D.             Director of Research & Development
> joel.sherrill at OARcorp.com        On-Line Applications Research
> Ask me about RTEMS: a free RTOS  Huntsville AL 35805
> Support Available                (256) 722-9985
>
>