Re: [Xenomai] Xenomai installation on P1020RDB

[Wolfgang Grandegger <wg@grandegger.com>]

Hi Lukasz,

On 07/25/2012 06:18 PM, Lukasz Zemla wrote:
> Hi Wolfgang,
> 
> Thank you for your mail, especially for sharing detailed latency results. 
> Find my answers below.
> 
>> -----Original Message-----
>> From: Wolfgang Grandegger [mailto:wg@grandegger.com]
>> Sent: Friday, July 20, 2012 8:25 PM
>> To: Lukasz Zemla
>> Cc: Xenomai@xenomai.org
>> Subject: Re: [Xenomai] Xenomai installation on P1020RDB
>>
>> Hi Lukasz,
>>
>> On 07/20/2012 04:31 PM, Lukasz Zemla wrote:
>>> Hello,
>>>
>>> Has anyone some experience with installing Xenomai on P1020RDB board?
>> I'd like to perform some benchmarks on this board.
>>> I'm trying to install it using the latest Freescale SDK 1.2 based on
>>> Yocto. But hints for SDK 1.0.3 would be also fine. Finally every way
>>> for getting it working... ;-)
>>>
>>> What I'm doing is getting Freescale kernel (3.0.34):
>>
>> If you can, use a *mainline* kernel. The latest Xenomai patch is for
>> Linux 3.2.21 and that version does well support the P1020RDB, IIRC.
> 
> I tried to install Xenomai on 3.2.21 - it boots, but waits about 76 seconds after initialization of first eth0 controller: 
> 
> 	[    0.905820] fsl-gianfar ethernet.1: eth0: TX BD ring size for Q[7]: 256
> 	[   77.451135] fsl-gianfar ethernet.2: eth1: mac: 00:04:9f:02:2d:11
> 
> There is no delay between eth1 and eth2. 
> 
> The vanilla 3.2.21 does not have any delays - it initializes eth0, eth1, eth2 immediately.

Strange. Could you please show us your .config. Is SMP enabled?

> [...]
> 
>>> Next I tried to install Xenomai on vanilla 3.1.10 kernel. I got
>> compilation error:
>>>
>>>         arch/powerpc/sysdev/fsl_lbc.c: In function
>> 'fsl_lbc_ctrl_irq':
>>>         arch/powerpc/sysdev/fsl_lbc.c:247:3: error: 'TASK_NORMAL'
>>> undeclared (first use in this function)
>>
>> That has nothing to do with Xenomai. Did you try to build the vanilla
>> kernel first?
> 
> The vanilla 3.1.10 kernel builds and boots properly.
> I double checked and confirm that 3.1.10 vanilla kernel after patching using adeos-ipipe-3.1.10-powerpc-2.13-08.patch has problem with compilation presented above.
> After fsl_lbc.c file correction I can compile it and boot (what I forgot last time was rebuilding DTB file ('make ARCH=powerpc CROSS_COMPILE=powerpc-fsl-linux-gnuspe- p1020rdb.dtb'). With the new DTB system goes further but hangs for some time rises exception:

I'm unable to reproduce that issue. What defconfig did you use? Could
you show use your .config. I used mpx85xx_smp_defconfig abd it compiled
fine.

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Wolfgang.