Date: Tue, 15 Oct 2019 22:46:18 +0200 From: Emmanuel Vadot <manu@bidouilliste.com> To: =?ISO-8859-1?Q?S=F8ren?= Schmidt <soren.schmidt@gmail.com> Cc: freebsd-arm <freebsd-arm@freebsd.org> Subject: Re: Trouble starting AP cpu's on all winner R40/V40 chip, help needed? Message-ID: <20191015224618.3448bd3496ec15df60b64f58@bidouilliste.com> In-Reply-To: <184A8618-F027-42F2-B930-C3331DB43A50@gmail.com> References: <0AE907CC-0CBC-4A8A-A2D3-71EF37330503@gmail.com> <20191015140210.82d406d7a7b86720e4771206@bidouilliste.com> <C3E6AB41-30DA-4BB7-A6E8-533D536413E2@gmail.com> <07E4329F-3DFD-49FB-A3BC-A63790DCC798@gmail.com> <184A8618-F027-42F2-B930-C3331DB43A50@gmail.com>
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On Tue, 15 Oct 2019 22:26:35 +0200 S=F8ren Schmidt <soren.schmidt@gmail.com> wrote: >=20 >=20 > >>=20 > >>>=20 > >>> R40 seems to use different registers for cpu bringup, so you will need > >>> to define a new platform for it in aw_machdep.c and defines some new > >>> function for ap bringup in aw_mp.c > >>> The User Manual section 3.2 of the R40 have all the needed info. > >>>=20 > >>=20 > >> Yeps, already did that, and I can reset the cores etc, that seems to w= ork (register bits flips), but there are no mention of regs to put the star= ting address into. > >>=20 > >> Chap 3.2 doesn?t mention anything in that regard (at least in the docs= I?ve found online) its moved to chap 4.2 in the latest R40/V40/T3 docs I?v= e found bu still no mention of starting address. > >>=20 > >> I looks somewhat like the A20 ie it has control for 2 cpu?s the last t= wo are missing from the register ref, which suggests to me that the docs mi= ght be inaccurate at best. > >>=20 > >> I looked into ?Tina-linux? that they made for it, but I havn?t found o= ut how they start it there either.. > >>=20 > >> I might also just have stared me blind at it :) > >=20 > > Found that the start adresse is somewhere else: > >=20 > > CPU software entry register offset 00bc in sysctl instead of cpuctl? > >=20 > > I?ll try that when I get home later today,,, >=20 > Success, I now have all 4 cores running, took a little experimenting thou= gh, release the power switch/clamp is non-std too. Cool. > Now to the last part, the gmac 1G ether controller :) What's missing ? is it dwc or awg ? > PS: I have had to add devices to the .dtsi and dts files for the r40/v40 = for this to work at all, std-linux doesn?t support this setup either. What was missing ? > PPS: when this is all done, any chance for it to get into the official so= urces ? (Yeah I retired my src commit bit long ago :))=20 Sure open a review on phabricator and add me as a reviewer. > -S=F8ren >=20 >=20 --=20 Emmanuel Vadot <manu@bidouilliste.com>
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