Date: Fri, 11 Dec 2015 18:06:37 +0200 From: Stanislav Galabov <sgalabov@gmail.com> To: freebsd-mips@freebsd.org Subject: Re: Interest in support for Mediatek/Ralink SoCs? Message-ID: <E4AEB37F-8E44-4371-8E2B-231711E08D17@gmail.com> In-Reply-To: <F35AF02A-DC31-4B5F-9349-26C2FF47F5C2@gmail.com> References: <F35AF02A-DC31-4B5F-9349-26C2FF47F5C2@gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
> On Dec 11, 2015, at 10:25, Stanislav Galabov <sgalabov@gmail.com> = wrote: >=20 > Hi all, >=20 > 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? >=20 > The first three are pretty standard in terms of CPU - they=E2=80=99re = all MIPS 24Kc based, so they should =E2=80=98just work=E2=80=99 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. >=20 > 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=E2=80=99t support SMP at the moment. >=20 > 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 :-) >=20 > 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=E2=80=A6 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=E2=80=A6 >=20 > So, anyone else interested in working on MT76xx support? >=20 > Best wishes, > Stanislav Hi all, I can put a single core kernel (uImage) somewhere (where?) so you guys = can download it and see if it starts up on your boards=E2=80=A6 It won=E2=80=99t do too much at the moment, unless you have a SATA disk = with root filesystem (UFS) attached on an ASMedia 1061 on PCIe. :-) Also, for the guys that mentioned they had MT7621 based boards: how much = RAM do you guys have on your boards? I have 512MB on mine, but I=E2=80=99v= e currently hard-coded the kernel to use 256MB. Best wishes, Stanislav=
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?E4AEB37F-8E44-4371-8E2B-231711E08D17>