[U-Boot-Users] debug linux kernel hangs

Alex shi alex.shi at tom.com
Thu Jun 23 02:32:07 CEST 2005

Hi Denk:

    Thanks your help. Just because the serial console can not work on my 
board, so I step into kernel to trace.
I think maybe the kernel init sequence can not arrive the console_init(), so 
I can not get any message after run "bootm". It just told me "Uncompressing 
Kernel Image ... OK", then it hangs.
Bye the way, I only the u-boot 1.1.1 and linux kernel 2.4.22 in hand, where 
I can find the lastest code?

Thanks again!

----- Original Message ----- 
From: "Wolfgang Denk" <wd at denx.de>
To: "Alex shi" <alex.shi at tom.com>
Cc: <u-boot-users at lists.sourceforge.net>
Sent: Thursday, June 23, 2005 8:11 AM
Subject: Re: [U-Boot-Users] debug linux kernel hangs

> Hello,
> in message <021a01c57785$fc451a30$4500a8c0 at baniantealex> you wrote:
>>  My box is MPC8247
>> I use u-boot 1.1.1 to boot linux kernel 2.4.22, the bd_info are same in
> Both the versions of U-Boot and Linux kernel are very,  very  old.  I
> strongly recommend to use more current versions of the software.
>> 620             ppc_md.setup_arch();
>> (gdb) n
>> <<<<< long time wait and then press ctl + c.
> ...
>> #0  0xc0007e4c in __delay () at time.c:427
>> #1  0xc0015ae4 in panic (fmt=0x2bbbd "\001") at delay.h:42
> So your kernel has paniced.
>> and panic a message to me, isn't it?
> Indeed. And what was the panic message? What was the contents of  the
> log_buf area?
> I'm afraid you will have to type the commands to display the contents
> of the log buffer yourself - you did not give instructions how to log
> in on your system.
> See also http://www.denx.de/twiki/bin/view/DULG/LinuxPostMortemAnalysis
> And by the way: this is a Linux problem, so all of this is completely
> off topic on this list.
> Best regards,
> Wolfgang Denk
> -- 
> Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
> "'Tis true, 'tis pity, and pity 'tis 'tis true."
>    - Poloniouius, in Willie the Shake's _Hamlet, Prince of Darkness_

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