[Xenomai-help] Unable to use Xenomai-Services on ARM/S3C2410

[Xenomai-help] Unable to use Xenomai-Services on ARM/S3C2410

[p.vonbrunn]

Hi guys,

I am currently trying to enable Real-Time-Support on my embedded NetDCU10
board (S3C2410), but with a lot of problems remaining so far... I am using
Kernel 2.6.19 delivered and pre-patched (some board-specific changes) with
my board. This kernel is configured, compiled and working well on the
target.

After this I tried to get Xenomai running on the machine. I am using
Xenomai 2.3.1 with Adeos-Patch ARM 2.6.19 1.70 (latest), which compiled
well (nucleus, skins etc. built in the kernel) but isn't working
correctly: "dmesg" tells me that the Xenomai-Domain has been registered by
I-pipe and the Xenomai-Services have been started, but I cannot run any
(i.e. trivial_periodic) of the Xenomai-Examples. They fail with "Xenomai
or XENO_OPT_PERVASIVE disabled", but Pervasive is enabled in the .config.
Did I miss anything?

I thank you for any response and suggestions!

(Shall I post my shell-script for Xenomai-compilation and/or the
config?)


Regards,
Patrick

Re: [Xenomai-help] Unable to use Xenomai-Services on ARM/S3C2410

[Gilles Chanteperdrix]

p.vonbrunn@domain.hid wrote:
> Hi guys,
> 
> I am currently trying to enable Real-Time-Support on my embedded NetDCU10
> board (S3C2410), but with a lot of problems remaining so far... I am using
> Kernel 2.6.19 delivered and pre-patched (some board-specific changes) with
> my board. This kernel is configured, compiled and working well on the
> target.
> 
> After this I tried to get Xenomai running on the machine. I am using
> Xenomai 2.3.1 with Adeos-Patch ARM 2.6.19 1.70 (latest), which compiled
> well (nucleus, skins etc. built in the kernel) but isn't working
> correctly: "dmesg" tells me that the Xenomai-Domain has been registered by
> I-pipe and the Xenomai-Services have been started, but I cannot run any
> (i.e. trivial_periodic) of the Xenomai-Examples. They fail with "Xenomai
> or XENO_OPT_PERVASIVE disabled", but Pervasive is enabled in the .config.
> Did I miss anything?
> 
> I thank you for any response and suggestions!
> 
> (Shall I post my shell-script for Xenomai-compilation and/or the
> config?)

These are really old versions. Could you test if you get the same bug
with the latest version?

-- 
                                                 Gilles.

Re: [Xenomai-help] Unable to use Xenomai-Services on ARM/S3C2410

[Gilles Chanteperdrix]

p.vonbrunn@domain.hid wrote:
> Hi guys,
> 
> I am currently trying to enable Real-Time-Support on my embedded NetDCU10
> board (S3C2410), but with a lot of problems remaining so far... I am using
> Kernel 2.6.19 delivered and pre-patched (some board-specific changes) with
> my board. This kernel is configured, compiled and working well on the
> target.
> 
> After this I tried to get Xenomai running on the machine. I am using
> Xenomai 2.3.1 with Adeos-Patch ARM 2.6.19 1.70 (latest), which compiled
> well (nucleus, skins etc. built in the kernel) but isn't working
> correctly: "dmesg" tells me that the Xenomai-Domain has been registered by
> I-pipe and the Xenomai-Services have been started, but I cannot run any
> (i.e. trivial_periodic) of the Xenomai-Examples. They fail with "Xenomai
> or XENO_OPT_PERVASIVE disabled", but Pervasive is enabled in the .config.
> Did I miss anything?
> 
> I thank you for any response and suggestions!
> 
> (Shall I post my shell-script for Xenomai-compilation and/or the
> config?)

Also, does the built-in "latency" test run?

-- 
                                                 Gilles.

Re: [Xenomai-help] Unable to use Xenomai-Services on ARM/S3C2410

[p.vonbrunn]

The problem with updating the kernel is the platform-specific patch
(additional devices etc.), which is very huge and only available for
2.6.19. The latency-test doesn't seem to run: Illegal Instruction is the
output I get. Did I miss anything?

Patrick

Re: [Xenomai-help] Unable to use Xenomai-Services on ARM/S3C2410

[Gilles Chanteperdrix]

p.vonbrunn@domain.hid wrote:
> The problem with updating the kernel is the platform-specific patch
> (additional devices etc.), which is very huge and only available for
> 2.6.19. The latency-test doesn't seem to run: Illegal Instruction is the
> output I get. Did I miss anything?

I do not intend to spend time on bugs which have already been fixed.

And nobody asks you to port your whole board-specific support to 2.6.28
to just run latency. You only need support for serial port, and maybe
ethernet driver if you intend to run the test over NFS.

Now, the only two bugs which come to my mind are:
- EABI setting
- gcc version (you can only use gcc up to 4.1 with this revision of
xenomai).

Also note that nowadays, maintaining forks of the Linux kernel for
specific boards is considered a bad way of getting linux to support your
board, one reason being precisely the one you invoke: upgrading becomes
difficult.
See http://lwn.net/Articles/230831/

-- 
                                                 Gilles.