RTEMS-libbsd freebsd-org submodule would require update in order to import genet drivers. Suggestions?

[Christian MAUDERER]

Hello Alan and Noor,

please note that updating libbsd to a newer FreeBSD version is a bit 
more work than pushing the hash of the freebsd-org submodule. The basic 
process is:

- use freebsd-to-rtems.py to copy changes from libbsd to the freebsd-org
- commit them there
- rebase to a newer release
- fix all problems during the rebase
- take a look at the changed subsystems in freebsd
- use freebsd-to-rtems.py to copy the changes back from freebsd-org to 
libbsd

Last time I talked to Sebastian about that, he estimated the update to 
the current release to be the work of a few weeks. Sebastian did all 
updates in the last years, so I think I can trust that estimation.

I think currently your best approach is to try to do a backport on a 
branch. If you have well isolated drivers, rebasing that backport on a 
newer libbsd version should be possible.

Please note that backports most likely won't be directly included in 
libbsd. They make the upgrade process a lot more complicated. So I'm 
sure that someone will object to include a backport in the master 
branch. Still: I think the backport on a branch is currently the best 
approach for your project.

Best regards

Christian

On 2023-06-04 19:18, Noor Aman wrote:
> Hi Alan,
> 
>     If you have not done so already, would it be worth trying to build
>     and initialize the current libbsd with a loopback driver?
> 
> 
> I haven't done it so far, This might help. Thanks.
> 
>     Are there other devices on the RPI4 such as the SD card or USB that
>     may be usable in the current libbsd on the Pi 4?
> 
> 
> The only thing which I think might be compatible would be arasan SD card 
> drivers. And every other peripheral's drivers isn't present in the 
> current rtems-libbsd state.
> 
>     I know it will not get you the ethernet driver you need, but having
>     an environment that runs on the board might be a step in the right
>     direction.
> 
>     How hard do you think it would be to backport the ethernet driver to
>     the current rtems-libbsd release?
> 
> 
> I'm not sure how difficult it would be to backport since it's a major 
> release (backporting from 13.x to 12.x). It will take a while to figure 
> all that out.
> 
> _______________________________________________
> devel mailing list
> devel at rtems.org
> http://lists.rtems.org/mailman/listinfo/devel

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