porting linux --> printk fails in start_kernel()

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Hi list,
I need some help!!!
I am currently involved in porting the linux SH kernel to an new board. Upto now, i have been succesfull in writing a monitor program which loads my linux kernel (vmlinux.bin format) to RAM and starts executing it. So for i have been able to step into the start_kernel() function, but i have noticed that printk fails. This happens at the very first instance of the printk in the kernel at


printk(linux_banner); , in init/main.c

Any ideas on as to WHY printk is failing?
did anyone out here have similar experiences with printk before ?

anticipating a reply!!
Thanks in advance.

regards,
Vishal

p.s: i am using the 2.4.10-pre6 shlinux.






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