From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from p15137414.pureserver.info (matrixvision.de [217.160.213.229]) by ozlabs.org (Postfix) with ESMTP id B3C08DE08D for ; Wed, 9 Apr 2008 05:59:25 +1000 (EST) Message-ID: <47FBCE99.8050108@matrix-vision.de> Date: Tue, 08 Apr 2008 21:59:21 +0200 From: =?ISO-8859-1?Q?Andr=E9_Schwarz?= MIME-Version: 1.0 To: Scott Wood Subject: Re: MPC8343 - "unable to handle paging request @ 0" References: <47F73625.9040903@matrix-vision.de> <20080407161036.GA2688@loki.buserror.net> <47FB7822.6090401@matrix-vision.de> <20080408164853.GH2552@loki.buserror.net> In-Reply-To: <20080408164853.GH2552@loki.buserror.net> Content-Type: multipart/alternative; boundary="------------030706020002060401000602" Cc: linuxppc-dev@ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This is a multi-part message in MIME format. --------------030706020002060401000602 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Scott Wood wrote: > On Tue, Apr 08, 2008 at 03:50:26PM +0200, Andre Schwarz wrote: > =20 >> after building a debug kernel and attaching the bdi2000 it looks like = =20 >> the crash occurs during "console_init()" ... >> =20 > > Does your device tree have a /chosen node after u-boot is done with it?= =20 > find_legacy_serial_ports() can crash otherwise (we really should fix th= at). > > =20 latest u-boot does add the chosen node. As far as I know it's for initrd setup ... don't know if it's complete. >> Since we're using a dtb I omit the "console=3D..." argument for the =20 >> kernel. Is this correct ? >> =20 > > It's OK if you have /chosen/linux,stdout-path. > > =20 that sounds promising ! Haven't seen this and will have a closer look. >> If "console=3D/dev/ttyS0,115200N8" argument is given the serial consol= e =20 >> stops working after console_init.... >> >> >> On other PowerPC system I could see something like this during boot : >> >> -> find_legacy_serial_port() >> stdout is /soc8568@e0000000/serial@4600 >> legacy_serial_console =3D 1 >> default console speed =3D 115340 >> <- find_legacy_serial_port() >> >> >> Should I see this message also ? >> =20 > > Only if you enable debug messages in legacy_serial.c. > > =20 ok. >> Have I misconfigured anything ? >> =20 > > One thing that sticks out from the above is that you ask for ttyS0, but= the > stdout you list from the other system corresponds to ttyS1. Is this ju= st a > difference between the two systems? > > =20 Yes - the log from the MPC8568 is a copy&paste from another posting.=20 It's not my system. I want ttyS0. > -Scott > =20 I appreciate your help ! Thanks, Andr=E9 MATRIX VISION GmbH, Talstra=DFe 16, DE-71570 Oppenweiler - Registergeric= ht: Amtsgericht Stuttgart, HRB 271090 Gesch=E4ftsf=FChrer: Gerhard Thullner, Werner Armingeon, Uwe Furtner --------------030706020002060401000602 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Scott Wood wrote:

On Tue, Apr 08, 2008 at 03:50:26PM +0200, Andre Schwarz wrote:

after building a debug kernel and attaching the bdi2000 it looks like  
the crash occurs during "console_init()" ...


Does your device tree have a /chosen node after u-boot is done with it? 
find_legacy_serial_ports() can crash otherwise (we really should fix that).

latest u-boot does add the chosen node.
As far as I know it's for initrd setup ... don't know if it's complete.

Since we're using a dtb I omit the "console=..." argument for the  
kernel. Is this correct ?


It's OK if you have /chosen/linux,stdout-path.

that sounds promising ! Haven't seen this and will have a closer look.

If "console=/dev/ttyS0,115200N8" argument is given the serial console  
stops working after console_init....


On other PowerPC system I could see something like this during boot :

-> find_legacy_serial_port()
stdout is /soc8568@e0000000/serial@4600
legacy_serial_console = 1
default console speed = 115340
<- find_legacy_serial_port()


Should I see this message also ?


Only if you enable debug messages in legacy_serial.c.

ok.

Have I misconfigured anything ?


One thing that sticks out from the above is that you ask for ttyS0, but the
stdout you list from the other system corresponds to ttyS1.  Is this just a
difference between the two systems?

Yes - the log from the MPC8568 is a copy&paste from another posting. It's not my system.
I want ttyS0.

-Scott

I appreciate your help !

Thanks,
André

MATRIX VISION GmbH, Talstraße 16, DE-71570 Oppenweiler - Registergericht: Amtsgericht Stuttgart, HRB 271090 Geschäftsführer: Gerhard Thullner, Werner Armingeon, Uwe Furtner
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