Interest in support for Mediatek/Ralink SoCs?

[Kevin Lo]

On Fri, Dec 11, 2015 at 05:27:55PM +0800, Ganbold Tsagaankhuu wrote:
> Stanislav,
> 
> On Fri, Dec 11, 2015 at 4:25 PM, Stanislav Galabov <sgalabov at gmail.com>
> wrote:
> 
> > Hi all,
> >
> > Is there any interest on bringing support for Ralink/Mediatek more
> > up-to-date SoCs, such as MT7620, MT7628, MT7688 and, notably, MT7621 to
> > FreeBSD?
> >
> > The first three are pretty standard in terms of CPU - they’re all MIPS
> > 24Kc based, so they should ‘just work’ as far as booting FreeBSD goes.
> > The last one and, in my opinion, the most interesting one, the MT7621 is a
> > MIPS 1004Kc - dual core with dual hardware threads per core. It also
> > introduces new (to FreeBSD/mips) concepts such as the global interrupt
> > controller (gic) for example and could be interesting from this perspective
> > as well as it could pave the way for MIPS 1074K support as well.
> >
> > I am currently able to boot MT7621 single core to multi user. I can start
> > the rest of the cores and threads as well, but am still having difficulties
> > figuring out the proper cache and TLB management so it basically doesn’t
> > support SMP at the moment.
> >
> > I have also done some work on PCI support for the MT7621 and am currently
> > using userland on a SATA drive, connected to an ASMedia 1061 on the PCI
> > bus, which seems to be quite stable as well, although the code is nowhere
> > near ready to show to other people :-)
> >
> 
> Very nice.
> 
> 
> 
> >
> > The support for all the peripherals, however, is not something I would be
> > able to take on all by myself, due to lack of spare time.
> > There is some support in the tree for older Ralink systems (in
> > sys/mips/rt305x and in sys/dev/rt for the ethernet/switch peripheral), but
> > it needs work.
> > Also, the WiFi drivers do not seem to support the chipsets embedded in or
> > used with MT76xx, so this will be a major challenge it seems, especially
> > given the lack of documentation… however, a piece of good news is that
> > OpenWRT supports most/all of these chipsets, so at least we would have a
> > frame of reference…
> >
> > So, anyone else interested in working on MT76xx support?
> >
> 
> I think some developers in this list already have MT7621 board so maybe
> they have some interest and can test your changes.

I have a FireWRT and I'm willing to test Stanislav's changes and give 
feedback. :)

> Ganbold
> 
> 
> 
> >
> > Best wishes,
> > Stanislav

	Kevin