help with inittab

[Chris Dumoulin]

Hi Scott,
That is where my output stops. What was the cause of your interrupt 
problem? Were you able to fix it?

- Chris

Scott Coulter wrote:

>Chris,
>
>Does your serial output stop after "Freeing unused kernel memory..."
>
>If it does, you may have an interrupt problem with the UART.  I had to
>track down that very problem the other day.  As a test, even if my UART
>interrupt was purposely misconfigured, I still saw all of the output up
>to and including "Freeing unused kernel memory..."
>
>Scott
>
>
>
>
>___________________________________________________________________
>
>  Scott N. Coulter
>  Senior Software Engineer
>  
>  Cyclone Microsystems          
>  370 James Street              Phone:  203.786.5536 ext. 118
>  New Haven, CT 06513-3051      Email:  scott.coulter at cyclone.com
>  U.S.A.                        Web:    http://www.cyclone.com
>___________________________________________________________________
>
>-----Original Message-----
>From: linuxppc-embedded-bounces+scott.coulter=cyclone.com at ozlabs.org
>[mailto:linuxppc-embedded-bounces+scott.coulter=cyclone.com at ozlabs.org]
>On Behalf Of Chris Dumoulin
>Sent: Friday, June 09, 2006 3:15 PM
>To: Steve Iribarne (GMail)
>Cc: linuxppc-embedded at ozlabs.org
>Subject: Re: help with inittab
>
>The init is from Busybox. Since I'm getting output from my serial port 
>during the kernel boot process, I think it's safe to say that my 
>/dev/ttyS0 is properly configured. Besides passing the kernel argument 
>console=ttyS0,57600, is there anything else I need to do to properly 
>configure the console? I've looked through my kernel configuration to 
>make sure that any serial device or console related stuff was enabled 
>and configured.
>
>I'm feeling pretty stumped.
>
>- Chris
>
>Steve Iribarne (GMail) wrote:
>
>  
>
>>On 6/9/06, Chris Dumoulin <cdumoulin at ics-ltd.com> wrote:
>>
>>    
>>
>>>I've now determined that my kernel seems to stop in the following
>>>      
>>>
>line
>  
>
>>>of code, in the function init(void * unused), in init/main.c:
>>>run_init_process("/sbin/init");
>>>      
>>>
>>Who's init are  you using??
>>
>>Are you using Busyboxes or sysinit from GNU?
>>
>>
>>    
>>
>>>I've determined that it stops at this call by stepping through the
>>>      
>>>
>code
>  
>
>>>with a BDI2000.
>>>
>>>My boot arguments are:
>>>console=ttyS0,57600n8 ip=off root=/dev/ram0 rw
>>>
>>>My current inittab is:
>>>::sysinit:/etc/rc.sh
>>>::ctrlaltdel:/sbin/reboot
>>>::shutdown:/sbin/swapoff -a
>>>::shutdown:/bin/umount -a -r
>>>::restart:/sbin/init
>>>::respawn:/bin/sh
>>>
>>>I've tried adding an "echo" command to the /etc/rc.sh script that is
>>>called, but I don't see any output. I've also trying changing the
>>>::sysinit line in inittab to point to some non-existent script, to
>>>      
>>>
>see
>  
>
>>>if I'll get some error message, but I still see nothing. Is it
>>>      
>>>
>possible
>  
>
>>>that /sbin/init is dying before it gets to the point of reading
>>>      
>>>
>inittab?
>  
>
>>>Any ideas?
>>>
>>>Regards,
>>>Chris Dumoulin
>>>
>>>
>>>Wolfgang Denk wrote:
>>>
>>>      
>>>
>>>>In message <44888B92.40409 at ics-ltd.com> you wrote:
>>>>
>>>>
>>>>        
>>>>
>>>>>I am using the linux kernel 2.6.15 and initrd ramdisk image from
>>>>>          
>>>>>
>ELDK
>  
>
>>>>>4.0. Currently, I seem to be able to boot without errors, but after
>>>>>          
>>>>>
>
>  
>
>>>the
>>>      
>>>
>>>>>root filesystem is mounted, things just stop.
>>>>>
>>>>>
>>>>>          
>>>>>
>>>>And  what's  your  console  device?  Are  you  passing  any
>>>>        
>>>>
>console=
>  
>
>>>>arguments  on  the  command  line?  Is the corresponding device
>>>>        
>>>>
>entry
>  
>
>>>>present in the /dev/directory?
>>>>
>>>>Best regards,
>>>>
>>>>Wolfgang Denk
>>>>
>>>>
>>>>
>>>>        
>>>>
>>>-- 
>>>*--Christopher Dumoulin--*
>>>Software Team Leader
>>>
>>><http://ics-ltd.com/>
>>><http://ics-ltd.com/>
>>>
>>>Interactive Circuits and Systems Ltd.
>>>5430 Canotek Road
>>>Ottawa, ON
>>>K1J 9G2
>>>(613)749-9241
>>>1-800-267-9794 (USA only)
>>>
>>>
>>>      
>>>
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>
>
>  
>


-- 
*--Christopher Dumoulin--*
Software Team Leader

<http://ics-ltd.com/>
<http://ics-ltd.com/>

Interactive Circuits and Systems Ltd.
5430 Canotek Road
Ottawa, ON
K1J 9G2
(613)749-9241
1-800-267-9794 (USA only)

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