[ELDK] ELDK Linux 2.6.29, MPC885ADS and early console

Vitaly Bordug vitb at kernel.crashing.org
Fri Apr 17 14:26:02 CEST 2009


В Fri, 17 Apr 2009 09:48:47 +0200
Sylvain ANDRE <sandre at assystem.com> пишет:

> Hi Detlev,
> 
> 
> I added only the option CONFIG_LOGBUFFER and compile, but the
> following error appeared : "undefined reference to
> 'setup_ext_logbuff_mem'"
>
um, why would you need that?
just try to follow the recipe on
http://www.denx.de/wiki/view/DULG/LinuxPostMortemAnalysis


if your box has JTAG, you can go ahead and peek  __log_buf via debugger,
or, if you have BDI, even use gdb to display that.

-Vitaly
> Actually I couldn't find this function definition __log_bufin the
> sources (itis only declared in logbuff.h).
> 
> I will download the last GIT Linux sources tonight.
> 
>      Best regards,
>      Sylvain ANDRE.
> 
> 
>  > Hi Sylvain,
> 
> >> I added concole=ttyCPM0 in the command line, but the console
> >> doesn't run :-(
> 
>  > Did you try to do a post-mortem inspection of the Linux
>  > logbuffer[1]?
> 
>  >Cheers
>  >  Detlev
> 


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