No console output when booting linux from uboot

[Qin, Laigui (GE EntSol, Security)]

Hi all,

I am trying to boot linux kernel (2.6.23) from uboot (1.3.2) for my
custom board. The uboot works well, the kernel booting hit the
start_kernel(). But there is nothing output from console. 

With debugger, I saw that the printk() functions were called many times
without any console output. Tracing into the source code, I found that
the printk() called "con->write" operation... 

Can anyone guide me to solve this?

Mike Qin
GE Security

GE imagination at work

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