From owner-freebsd-ppc@FreeBSD.ORG Sat Aug 29 00:25:59 2009 Return-Path: Delivered-To: freebsd-ppc@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id AED281065673 for ; Sat, 29 Aug 2009 00:25:59 +0000 (UTC) (envelope-from Daan@vehosting.nl) Received: from VM01.VEHosting.nl (unknown [IPv6:2001:470:1f14:32d::1:140]) by mx1.freebsd.org (Postfix) with ESMTP id 49C638FC1B for ; Sat, 29 Aug 2009 00:25:59 +0000 (UTC) Received: from [192.168.45.11] (129-251.ftth.onsbrabantnet.nl [88.159.251.129] (may be forged)) (authenticated bits=0) by VM01.VEHosting.nl (8.14.3/8.13.8) with ESMTP id n7T0Q0Z3026348; Sat, 29 Aug 2009 02:26:00 +0200 (CEST) (envelope-from Daan@vehosting.nl) From: Daan Vreeken Organization: VEHosting.nl To: freebsd-ppc@freebsd.org Date: Sat, 29 Aug 2009 02:25:58 +0200 User-Agent: KMail/1.9.10 References: <35914876-0CFF-427B-8F80-B1BEEA5A7A18@semihalf.com> <200908282127.28482.Daan@vehosting.nl> <200908282146.28715.hselasky@c2i.net> In-Reply-To: <200908282146.28715.hselasky@c2i.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-2" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Message-Id: <200908290225.59094.Daan@vehosting.nl> x-ve-auth-version: mi-1.0.3 2008-05-30 - Copyright (c) 2008 - Daan Vreeken - VEHosting x-ve-auth: authenticated as 'pa4dan' on VM01.VEHosting.nl Cc: Michal Mazur , Andrew Turner , Hans Petter Selasky Subject: Re: FreeBSD/powerpc on MPC5200 X-BeenThere: freebsd-ppc@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the PowerPC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 29 Aug 2009 00:25:59 -0000 Hi, 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 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.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_= 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_but_= 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.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? > > Maybe busdma is not computing correct physical addresses for the kernel > virtual memory loaded into DMA. Sounds plausible. ohci_dumpregs() shows the following : ohci_dumpregs:584: ohci_dumpregs: rev=3D0x00000010 control=3D0x000000bf command=3D0x00000000 ohci_dumpregs:588: intrstat=3D0x00000054 intre=3D0x8000005a intrd=3D0x80000= 05a ohci_dumpregs:592: hcca=3D0x01c12a00 percur=3D0x0017c500 ctrlhd=3D0x01c20880 ohci_dumpregs:596: ctrlcur=3D0x00000000 bulkhd=3D0x01c20800 bulkcur=3D0x000= 00000 ohci_dumpregs:600: done=3D0x00000000 fmival=3D0xa7782edf fmrem=3D0x8000151b ohci_dumpregs:604: fmnum=3D0x0000fe72 perst=3D0x00002a2f lsthrs=3D0x00000628 ohci_dumpregs:608: desca=3D0x02001202 descb=3D0x00000000 stat=3D0x00000000 ohci_dumpregs:611: port1=3D0x00010301 port2=3D0x00010101 ohci_dumpregs:617: HCCA: frame_number=3D0x35fe0000 done_head=3D0x00000000 In ohci_init() I've added a printf() directly after the following two lines= : usbd_get_page(&sc->sc_hw.hcca_pc, 0, &buf_res); sc->sc_hcca_p =3D buf_res.buffer; that prints the virtual and physical address of the HCCA : printf("hcca: buf_res.buffer=3D%p, buf_res.physaddr=3D%x\n", buf_res.buffer, buf_res.physaddr); This gives the following line in the dmesg output : hcca: buf_res.buffer=3D0x1c12a00, buf_res.physaddr=3D1c12a00 = =20 I'm not a powerpc VM guru, but it looks as if the virtual and physical addr= ess=20 are the same. Are they mapped 1:1 or is there something going wrong? Anyone? Regards =2D-=20 Daan Vreeken VEHosting http://VEHosting.nl tel: +31-(0)40-7113050 / +31-(0)6-46210825 KvK nr: 17174380