Xenomai-Support with SDK1.8 and Linux-3.12.37

[jonathanweinert]

Hello,

I have a running system with Linux ls1021atwr 3.12.37-rt51+ls1+gf488de6 #11 SMP Thu Jun 22 17:12:20 CST 2017 armv7l GNU/Linux.

I'm using the 1.8 SDK for the LS1021A-TWR.

I wanted to apply the xenomai-kernel but I noticed that there isn't a ipipe-patch for the kernel-Version 3.12.37.

But there is  a patch for 3.10 or 3.14. My question is: How can I upgrade or downgrade the kernel Version running at the ls1021A-TWR.

My first steps were to add a recipe in recipes-kernel of the meta-fsl-arm folder which fetches the 3.10 kernel-version of the freescale linux.git repository. Unfortunately I couldn't start the kernel, it hangs on "Starting Kernel". Are there any further conditions which to be set to get an older kernel working?

U-Boot 2015.01+ls1+g6ba8eed (Jun 21 2017 - 18:47:08)

CPU:   Freescale LayerScape UnknownE, Version: 1.0, (0x87081310)
Clock Configuration:
       CPU0(ARMV7):1000 MHz,
       Bus:300  MHz, DDR:800  MHz (1600 MT/s data rate),
Reset Configuration Word (RCW):
       00000000: 0608000a 00000000 00000000 00000000
       00000010: 20000000 00407900 60040a00 21046000
       00000020: 00000000 00000000 00000000 00038000
       00000030: 00080000 281b7340 00000000 00000000
Board: LS1021ATWR

Thanks!

Best regards

J. Weinert

[jeffsteinheider]

We also have Xenomai available on our LS1021ATSN board through the OpenIL distribution (Open Industrial Linux), running on the LS1021A processor there.  If you would like to download that SDK, it is available from the LS1021ATSN page.

Time-Sensitive Networking Solution for Industrial IoT|NXP 

[yipingwang]

Hello J. Weinert,

Probably some LS1021A platform related patches have not been pushed to 3.10 upstream Kernel source.

You could consider back porting the Xenomai ipipe-patch  for Kernel 3.14 to Kernel 3.12.  Please refer to this discussion [Xenomai] kernel 3.12 .

Have a great day,
TIC

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