RE: Frozen ! any idea ?

RE: Frozen ! any idea ?

[Stefano Bodini]

Hi all ... just my little testimonial about the problem.
Well, Linux and the little board were always working.
The freeze actually was minicom on the host, used to "speak" to the console !!!
I don't know why minicom freeze after 1 minute but sure I will not use it
anymore !

So Linux is working well on the board.

Now I have to solve the problem to have the kernel running if compiled with
the gdbserver option enabled.

In order to try to debug something I enabled the KDGB in the kernel
(following the instructions on the MontaVista documentation).

I recompiled the kernel, no errors .. but when I try to load and start it :

[Go 00400000]
loaded at: 00410000 004A81F4
relocated to: 00400000 004981F4
board data at: 00495128 00495144
relocated to: 004052C4 004052E0
zimage at: 00405960 004945AA
avail ram: 00499000 01000000

Linux/PPC load: root=/dev/nfs rw ip=auto
Uncompressing Linux...done.
Now booting the kernel

That's it.
Stops. No warning, no errors .. just stops.
I'm sure this is not a minicom problem this time ... any ideas ?

Many many thanks in advance

C'ya
	Steve


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Re: Frozen ! any idea ?

[Dave Wilhardt]

You might try disabling minicom's hardware and software flow control.  Been
there...

- Dave

Stefano Bodini wrote:

> Hi all ... just my little testimonial about the problem.
> Well, Linux and the little board were always working.
> The freeze actually was minicom on the host, used to "speak" to the console !!!
> I don't know why minicom freeze after 1 minute but sure I will not use it
> anymore !
>
> So Linux is working well on the board.
>
> Now I have to solve the problem to have the kernel running if compiled with
> the gdbserver option enabled.
>
> In order to try to debug something I enabled the KDGB in the kernel
> (following the instructions on the MontaVista documentation).
>
> I recompiled the kernel, no errors .. but when I try to load and start it :
>
> [Go 00400000]
> loaded at: 00410000 004A81F4
> relocated to: 00400000 004981F4
> board data at: 00495128 00495144
> relocated to: 004052C4 004052E0
> zimage at: 00405960 004945AA
> avail ram: 00499000 01000000
>
> Linux/PPC load: root=/dev/nfs rw ip=auto
> Uncompressing Linux...done.
> Now booting the kernel
>
> That's it.
> Stops. No warning, no errors .. just stops.
> I'm sure this is not a minicom problem this time ... any ideas ?
>
> Many many thanks in advance
>
> C'ya
>         Steve
>


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Re: Frozen ! any idea ?

[Matt Porter]

On Thu, Dec 05, 2002 at 01:28:31PM -0500, Stefano Bodini wrote:
> In order to try to debug something I enabled the KDGB in the kernel
> (following the instructions on the MontaVista documentation).
>
> I recompiled the kernel, no errors .. but when I try to load and start it :
>
> [Go 00400000]
> loaded at: 00410000 004A81F4
> relocated to: 00400000 004981F4
> board data at: 00495128 00495144
> relocated to: 004052C4 004052E0
> zimage at: 00405960 004945AA
> avail ram: 00499000 01000000
>
> Linux/PPC load: root=/dev/nfs rw ip=auto
> Uncompressing Linux...done.
> Now booting the kernel
>
> That's it.
> Stops. No warning, no errors .. just stops.
> I'm sure this is not a minicom problem this time ... any ideas ?

There is an early default breakpoint set when you enable KGDB on
PPC.  You've hit it and need to be communicating with the in-kernel
stub to continue.

Regards,
--
Matt Porter
porter@cox.net
This is Linux Country. On a quiet night, you can hear Windows reboot.

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RE: Frozen ! any idea ?

[Steven Blakeslee]

Do you have the watch dog timer enabled?  This could be the problem.

-----Original Message-----
From: Stefano Bodini [mailto:s.bodini@comcast.net]
Sent: Monday, November 25, 2002 2:45 PM
To: linuxppc-embedded@lists.linuxppc.org
Subject: Frozen ! any idea ?



Hi all !

I have (for me) a curious problem.
I have an Embedded Planet RXP Classic credit card (ppc860) loaded with a
2.4.17 kernel (compiled with MontaVista Pro 2.1).
I'm able to load correctly the kernel and the filesystem .. all is working
just fine, but after 1 minute since the last command issued, the system
just freeze.
1 minute without any command issued and the system is gone .. no errors, no
messages, no logs, nothing.
Just doesn't accept anymore commands .. even the echo on the tty port is
gone.

About the 1 minute value, I did some tests to figure out the timing and is
more or less 1 minute.
Up to 30-45 secs. and the system still react, after (50-70 secs) the system
freeze.
If you continue to issue commands the system doesn't freeze .. but it do it
as long as you stop to issue commands.

I tried to load also the default kernel image for that board .. same result.
It seems a kind of watch dog or timer .. but I don't understand why all is
frozen !

Any idea ?

Thanks in advance

C'ya
	Steve


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RE: Frozen ! any idea ?

[Stefano Bodini]

At 09:00 AM 12/02/2002 -0500, Steven Blakeslee wrote:

>Do you have the watch dog timer enabled?  This could be the problem.

On the kernel or on the board ?
On the board is disabled and on the kernel I didn't find any option about
the watchdog.

Thanks
         Steve


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Frozen ! any idea ?

[Stefano Bodini]

Hi all !

I have (for me) a curious problem.
I have an Embedded Planet RXP Classic credit card (ppc860) loaded with a
2.4.17 kernel (compiled with MontaVista Pro 2.1).
I'm able to load correctly the kernel and the filesystem .. all is working
just fine, but after 1 minute since the last command issued, the system
just freeze.
1 minute without any command issued and the system is gone .. no errors, no
messages, no logs, nothing.
Just doesn't accept anymore commands .. even the echo on the tty port is gone.

About the 1 minute value, I did some tests to figure out the timing and is
more or less 1 minute.
Up to 30-45 secs. and the system still react, after (50-70 secs) the system
freeze.
If you continue to issue commands the system doesn't freeze .. but it do it
as long as you stop to issue commands.

I tried to load also the default kernel image for that board .. same result.
It seems a kind of watch dog or timer .. but I don't understand why all is
frozen !

Any idea ?

Thanks in advance

C'ya
	Steve


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/