[Xenomai] Support of Beagleboard xm rev C on 3.14-ipipe

Gilles Chanteperdrix gilles.chanteperdrix at xenomai.org
Mon Jun 30 18:13:03 CEST 2014


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On 06/30/2014 06:06 PM, Arnaud Degroote wrote:
> On 30/Jun - 17:48, Gilles Chanteperdrix wrote:
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>> On 06/30/2014 05:45 PM, Arnaud Degroote wrote:
>>> On 30/Jun - 17:26, Gilles Chanteperdrix wrote:
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>>>> On 06/30/2014 05:18 PM, Arnaud Degroote wrote:
>>>>> On 30/Jun - 14:37, Arnaud Degroote wrote: [snip]
>>>>>>> Have you checked that the exact same kernel 
>>>>>>> configuration, only without CONFIG_IPIPE and 
>>>>>>> CONFIG_XENOMAI runs correctly under load?
>>>>>> 
>>>>>> The system seems to hang even without CONFIG_IPIPE. The 
>>>>>> linux-yocto kernel seems to work properly (it looks like 
>>>>>> a 3.14rc8), I will check precisely against linux kernel 
>>>>>> v3.14.
>>>>> 
>>>>> Some additional information
>>>>> 
>>>>> linux mainstream kernel on tag v3.14 runs fine on the 
>>>>> platform. The system hangs with ipipe branch ipipe-3.14 
>>>>> (without xenomai stuff, and without CONFIG_IPIPE).
>>>> 
>>>> In the two cases the configuration is exactly the same?
>>>> 
>>> Yes, there are no semantic difference. The only diff are
>>> 
>>> CONFIG_LOCALVERSION
>>> 
>>> and the ipipe kernel has the extra line
>>> 
>>> # CONFIG_IPIPE is not set
>>> 
>> If you have a rootfs without hardfp (based on the codesourcery 
>> toolchain for instance), could you try to boot without 
>> CONFIG_VFP?
> 
> I don't have such toolchain for the moment, but I can try to hack 
> my current yocto toolchain to test without hardfp.

The codesourcery toolchain is available for download, already compiled.

> Still, I have compiled a kernel without CONFIG_VFP but it still
> hangs in the same place, so I don't think it is related to the
> current issue.

If you are running a rootfs with hardfp with a kernel without
CONFIG_VFP, the system should not finish booting.

Where does the system hang exactly? We were talking about a hang when
running switchtest. How do you produce the hang on a system without
CONFIG_XENOMAI, since obviously you can not run switchtest?

- -- 
                                                                Gilles.
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