Date: Sun, 30 Aug 2009 16:14:57 +0200 From: Daan Vreeken <Daan@vehosting.nl> To: freebsd-ppc@freebsd.org Cc: Michal Mazur <arg@semihalf.com>, Andrew Turner <andrew@fubar.geek.nz>, Hans Petter Selasky <hselasky@c2i.net> Subject: Re: FreeBSD/powerpc on MPC5200 Message-ID: <200908301614.58264.Daan@vehosting.nl> In-Reply-To: <200908301549.18407.Daan@vehosting.nl> References: <35914876-0CFF-427B-8F80-B1BEEA5A7A18@semihalf.com> <200908282146.28715.hselasky@c2i.net> <200908301549.18407.Daan@vehosting.nl>
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On Sunday 30 August 2009 15:49:17 Daan Vreeken wrote: > Hi Hans Petter, > > On Friday 28 August 2009 21:46:27 Hans Petter Selasky wrote: > > On Friday 28 August 2009 21:27:28 Daan Vreeken wrote: > > > Hi Rafal (and the list), > > > > > > On Sunday 24 May 2009 21:15:44 Rafal Jaworowski wrote: > > > > On 2009-05-23, at 07:21, Andrew Turner wrote: > > > > > On Fri, 22 May 2009 12:21:01 +0200 > > > > > > > > > > Rafal Jaworowski <raj@semihalf.com> wrote: > > > > >> On 2009-05-11, at 15:15, Peter Czanik wrote: > > > > >>> Rafal Jaworowski =EDrta: > > > > >>>> I'd like to let people know that FreeBSD/powerpc is now able to > > > > >>>> boot into single user on the Freescale MPC5200 system-on-chip > > > > >>>> (EFIKA board). The environment is very simplistic: RAM disk > > > > >>>> based root fs, as > > > > >>>> there's no peripherals drivers besides serial console and the > > > > >>>> built- in > > > > >>>> PIC. See this log: http://people.freebsd.org/~raj/logs/efika.l= og > > > > >>> > > > > >>> Wow, great news! Two questions: > > > > >>> - are there any plans to support additional devices? > > > > >> > > > > >> We don't have immediate plans for other devices drivers, but this > > > > >> basic support will be merged into SVN, and it would be greatly > > > > >> welcome to see people help with remaining items. > > > > > > > > > > Is there a patch available? I would like to get back to working on > > > > > the EFIKA. > > > > > > > > Preliminary diff against 2009.04.06 HEAD is here: > > > > http://people.freebsd.org/~raj/patches/powerpc/efika.diff > > > > > > > > Comments or questions welcome. Some bits need to be streamlined so > > > > that all AIM/OF variations work together, and the code has to be > > > > rebased against up-to-date HEAD. > > > > > > I have downloaded your diff and succesfully patched it to -HEAD > > > (checked out on 2009-08-25). > > > Right now I'm looking into getting the USB controller working. (That > > > would allow me to use network & disks all in one go.) > > > > > > I have written the OHCI attachment code (inspired by a mix of Warner's > > > atmel version, mpc5xxx/ic.c and uart_dev_psc.c) and gotten it to > > > succesfully attach to the OHCI controller when booting the Efika boar= d. > > > USB is not (yet) working correctly. Near the end of ohci_init(), the > > > board seems to halt completely for about 30 seconds and after that, t= he > > > OHCI controller sets the 'unrecoverable error' flag. > > > > > > A complete dmesg dump can be found here : > > > http://vehosting.nl/pub_diffs/efika-daan-2009-08-28-ohci_attaching_bu= t_ > > >fa il ing.txt The kernel that produced this can be downloaded here : > > > http://vehosting.nl/pub_diffs/efika-daan-2009-08-28-ohci_attaching_bu= t_ > > >fa il ing.kernel > > > > > > The files I added/changed to get the attachment of the OHCI controller > > > to 'work' can be found here : > > > http://vehosting.nl/pub_diffs/efika-daan-2009-08-28_changed_files.tar= =2Eg > > >z (Warning : Ugly! and full of printf's for now!) > > > (I could have missed one, let me know if you can't get it to work.) > > > > > > The above dmesg shows a number of printf's I've added to ohci.c . My > > > mutilated version can be found here : > > > http://vehosting.nl/pub_diffs/efika-daan-2009-08-28_ohci.c > > > > > > As you can see, I printf() the interrupt status register at various > > > points during ohci_init(). The 'unrecoverable error' flag gets set ju= st > > > a couple of miliseconds after the following command has been executed= : > > > > > > /* And finally start it! */ > > > OWRITE4(sc, OHCI_CONTROL, ctl); > > > > > > After that OWRITE4(), the board sits for about 30 seconds and then > > > continues. I'm just guessing what's going on here, but could it be th= at > > > (one of?) the endpoint lists isn't properly setup and that the OHCI > > > controller keeps the CPU from accessing memory while it's racing > > > through memory following corrupt/invalid 'next' pointers? > > > > Maybe busdma is not computing correct physical addresses for the kernel > > virtual memory loaded into DMA. > > I've looking closely at the logs I generated earlier and this doesn't seem > to be the case (I think). The physical address of the HCCA (Host Controll= er > Communications Area) looks the same and the frame_number counter is > advancing in this memory area as soon as the controller is enabled. > One thing that strikes me is the value of the frame number though : > > ohci_dumpregs:599: ohci_dumpregs: rev=3D0x00000010 control=3D0x00000093 > command=3D0x00000002 > ohci_dumpregs:603: intrstat=3D0x00000040 intre=3D0x8000005a intrd=3D0x80= 00005a > ohci_dumpregs:607: hcca=3D0x01c12a00 percur=3D0x48000060 ctrlhd=3D0x01c2= 0880 > ohci_dumpregs:611: ctrlcur=3D0x00000000 bulkhd=3D0x01c20800 bulkcur=3D0x= 00000000 > ohci_dumpregs:615: done=3D0x00000000 fmival=3D0xa7782edf fmrem=3D0x80002= 5e7 > ohci_dumpregs:619: fmnum=3D0x000000e5 perst=3D0x00002a2f lsthrs=3D0x0000= 0628 > ohci_dumpregs:623: desca=3D0x02001202 descb=3D0x00000000 stat=3D0x000000= 00 > ohci_dumpregs:626: port1=3D0x00100303 port2=3D0x00010101 > ohci_dumpregs:632: HCCA: frame_number=3D0x35fe0000 done_head=3D0x00000000 > > The frame number at this particular moment is '0x35fe0000', though the OH= CI > spec says it should be a 16 bit counter, followed by 16 bits of padding > (that should read back as '0'). > > Could it be a big-endian controller, while the USB code expects > little-endian? Yes, that was it. Changing every 'htole32' into 'htobe32' and every 'le32to= h'=20 into 'be32toh' in sys/dev/usb/controller/ohci.c gets the USB controller to= =20 work : ... Timecounter "decrementer" frequency 33000000 Hz quality 0 Timecounters tick every 10.000 msec usbus0: 12Mbps Full Speed USB v1.0 Root mount waiting for: usbus0 ugen0.1: <Freescale> at usbus0 uhub0: <Freescale OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbu= s0 uhub0: 2 ports with 2 removable, self powered Root mount waiting for: usbus0 ugen0.2: <Dell> at usbus0 Root mount waiting for: usbus0 ugen0.3: <Prolific Technology Inc.> at usbus0 (For those with an Efika board, here's a working kernel :=20 http://vehosting.nl/pub_diffs/efika-daan-2009-08-30-usb-working.kernel ) =2D-=20 Daan Vreeken VEHosting http://VEHosting.nl tel: +31-(0)40-7113050 / +31-(0)6-46210825 KvK nr: 17174380
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