[PATCH] ramips: fix Unifi 6 Lite boot failure with v5.15 kernels

[Bjørn Mork]

David Bauer <mail at david-bauer.net> writes:
> On 11/4/22 09:29, Bjørn Mork wrote:
>> You are right that the bootloader must be fixed.  But the vendor isn't
>> likely to do that as long as they run older kernels. I believe the
>> OpenWrt policy in such cases is to try to work around the issue.
>> Replacing the vendor bootloader is a last resort.  Please correct me if
>> I'm wrong.
>
> I haven't tried this yet, but I think we should be able to boot a FIT
> image configuration which only contains a kernel image. We could then simply
> use the legacy append-DT like we do for legacy uImage ramips.
>
> Not the nicest way, but considering we need it for the target anyways, i consider
> this the simpler solution.

Yes, that sounds acceptable if it is supported.  Which I guess it should
be.

I can test it the next time I get a chance.  But that might take a while
before I'm close enough to these APs to use the console.  Should have
had a console I could access remotely there, but I don't.


> Note however, that this has to be at least also applied to the ZyXEL NWAxxx and (i assume)
> all other FIT ramips boards.

Really?  You mean they all depend on this U-Boot feature, despite what
the U-Boot docs recommend?



Bjørn