Debuging kernel

Rafael Ignacio Zurita rafaelignacio.zurita at
Sat May 29 17:57:00 EDT 2010

  I need to read kernel messages on boot to debug Jlime.

I am testing booting from microSD, and because I do not have
all the necessary for this :
I have set console=tty0 in kernel .config. But, no luck, messages
do not appear.

If I boot a useful rootfs, for example from :
cat /proc/cmdline says :
mem=32M console=ttyS0,57600n8 rootfstype...

so I guessed that uboot has command line arguments inside. Is that right?
If so, is there some way easier to set command line arguments than rebuilding?

Thanks in advance.

Rafael Ignacio Zurita

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