Re: [Xenomai] Building BeagleBone kernel from git

[Charles Steinkuehler <charles@steinkuehler.net>]

On 8/20/2013 3:25 PM, Charles Steinkuehler wrote:
> On 8/20/2013 2:55 PM, Gilles Chanteperdrix wrote:
>> On 08/20/2013 09:49 PM, Charles Steinkuehler wrote:
>>> Sorry if this is a total newbie question, but I see instructions
>>> for using the prepare-kernel.sh script on a kernel directory, and 
>>> instructions for using the ipipe kernel source directly, but not
>>> how to get from one to the other.
>>>
>> You want the I-pipe patch. To generate it, in the I-pipe tree, try:
>>
>> ./scripts/ipipe/genpatches.sh
>>
>> You should then find a file ipipe-core-3.8.13-arm-1.patch which you
>> can try and apply to another tree, possibly additionally patching with
>> pre and post patches (respectively before and after the I-pipe patch).
> 
> Yep, that sounds like exactly what I want!  Thanks for the help!!
> 
> I'll report back if I run into more issues or if everything works out
> OK.  I am trying to integrate the xenomai patches into a customized
> version of Robert C. Nelson's BeagleBone kernel build scripts:
> 
> https://github.com/cdsteinkuehler/linux-dev

Thanks again for the help!

I managed to get a working xenomai kernel from the automated builds.  I
have only done light testing so far, but there didn't look to be any
major issues with the process.

Additions to the "stock" RCN kernel build:

I pull the ipipe-3.8 branch from git and use it to generate an ipipe
patch file

The ipipe patch is applied to a BeagleBone patched kernel tree [1]

I pull xenomai 2.6 (master) from git and run it's setup_kernel.sh on the
ipipe patched source tree

...build continues as usual.

More testing needs to be done, but it looks good so far!

[1] There was one hunk I could not get to apply automatically.  The code
in gpmc.c has changed extensively enough that git apply doesn't work
with this file.  To work around this, I skip this file when applying the
ipipe patch, and use a manual fix-up of the trivial 2-line change:

https://github.com/cdsteinkuehler/linux-dev/blob/am33x-v3.8-bone26-xenomai/patches/xenomai/0001-ipipe-core-3.8.13-arm-1.gpmc.patch

There's probably a better way to work around this problem, but this
should do until the next official xenomai release comes out...any day
now, right?!?  :)  Anyway, it doesn't look like it will be that hard to
roll forward with updated ipipe or xenomai patches.

Thanks again!!

-- 
Charles Steinkuehler
charles@steinkuehler.net

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 261 bytes
Desc: OpenPGP digital signature
URL: <http://www.xenomai.org/pipermail/xenomai/attachments/20130821/bb1c91c7/attachment.pgp>