Just an addition:
I've looked into openembedded
https://github.com/openembedded/meta-openembedded/commits/master/meta-oe/recipes-extended/socketcan/can-isotp_git.bb
and iso-tp was blacklisted here:
https://github.com/openembedded/meta-openembedded/commit/649d491b213f19f4d7382cc20d824785d0965310#diff-a0aaa6de49c7f7360101571e2fe547248bb29c611c1bcf1f358667007c12f6b5
The recipe update is from 2019-08-29
https://github.com/openembedded/meta-openembedded/commit/d6b4dee1b16b6b2bf5c502f23be7eb05ad2f675e#diff-a0aaa6de49c7f7360101571e2fe547248bb29c611c1bcf1f358667007c12f6b5
So I wonder why isotp was blacklisted instead of upgrading the commit
hash to a more recent version of the can-isotp GitHub repo ...
¯\_(ツ)_/¯
Btw. they use the out-of-tree implementation instead of creating a
patch. Hm.
On 04.12.20 09:14, Oliver Hartkopp wrote:
Hello Jin,
On 03.12.20 23:50, Jin Park wrote:
I tried to build and load module and build image with Yocto frameworks
and it showed the error like this.
‘can-isotp was skipped: Recipe is blacklisted: Kernel module Needs
forward porting to kernel 5.2+’
Do you know whether CAN ISO-TP supports Yocto project?
the CAN ISO-TP support will be in mainline Linux starting with Linux
kernel 5.10.
For older kernels you may use the implementation for out-of-tree
compilation which is located here:
https://github.com/hartkopp/can-isotp (master branch)
There is also a more up-to-date version in the 4.17+ branch which I used
to prepare the mainline process.
But out-of-tree compilation is probably not to right way to integrate
iso-tp into Yocto. I would suggest to backport the current mainline code
to Kernel 5.4 and create a patch for it so that is applied to the kernel
code before the kernel compilation process.
(Is this already the process in Yocto to have a patch like this which
lead to the Yocto error message??)
Backporting the 5.10-rc mainline code to 5.4 is really easy as only one
thing needs to be changed/reverted:
https://github.com/hartkopp/can-isotp/commit/98986fc2f07cb5c7fa73a86d9b4b3ae417d35d79
I tried to bake module in below condition.
* Hardware: VAR-SOM-MX8M-NANO
* Yocto version: Dunfell Kernel 5.4.74
jin@jin-ThinkPad-P51:~/var-fslc-yocto$ bitbake can-isotp
WARNING: You have included the meta-virtualization layer, but
'virtualization' has not been enabled in your DISTRO_FEATURES. Some
bbappend files may not take effect. See the meta-virtualization README
for details on enabling virtualization support.
Loading cache: 100%
|#########################################################################################################################################################################|
Time: 0:00:00
Loaded 3848 entries from dependency cache.
ERROR: Nothing PROVIDES 'can-isotp'
can-isotp was skipped: Recipe is blacklisted: Kernel module Needs
forward porting to kernel 5.2+
I'm not familiar with Yocto. But when they created a kernel patch
including code/include/Kconfig/Makefile (as suggested above) it should
be easy to backport the mainline code as base for a 5.4 kernel patch.
Please let me know if you have problems creating such a 5.4 kernel patch.
Regards,
Oliver
