Date: Fri, 28 Aug 2009 21:27:28 +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: <200908282127.28482.Daan@vehosting.nl> In-Reply-To: <D94F0BDA-EEF4-4A74-AB82-A18B86A92241@semihalf.com> References: <35914876-0CFF-427B-8F80-B1BEEA5A7A18@semihalf.com> <20090523172128.2e0a3f2b@fubar.geek.nz> <D94F0BDA-EEF4-4A74-AB82-A18B86A92241@semihalf.com>
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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 írta: > >>>> 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.log > >>> > >>> 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 board. 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, the 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_but_failing.txt The kernel that produced this can be downloaded here : http://vehosting.nl/pub_diffs/efika-daan-2009-08-28-ohci_attaching_but_failing.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.gz (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 just 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 that (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? Regards, -- Daan Vreeken VEHosting http://VEHosting.nl tel: +31-(0)40-7113050 / +31-(0)6-46210825 KvK nr: 17174380home | help
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