Help about Cogent CSB637 Board.

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Hi Everyone,
I am working with Cogent CSB637 Board for last 2 weeks.But I am Stuck a
one point. I am trying to Port Linux on it. I took latest patches from  and . I applie
them on kernels (2.4 /2.6). Then I configure the kernel with
make ARCH=arm CROSS_COMPILE=arm-linux- xconfig
In configuration I am enabling general features only. I have enable
Serial Console Support for AT91RM9200.Since I am viewing my output o
and compiled the kernel with
make ARCH=arm CROSS_COMPILE=arm-linux- zImage
then I send the zImage created by it to my board. then i run this imag
with this command
which is a shell script (which is correct).
Then the problem begins.My kernel shows

Uncompressing Linux.................................................
done, booting the kernel.
Then nothing happens.I have tried many kernels and many patches but th
problem is same.But when I use kernel given at It goes littl
further and shows
"kmod: failed to exec /sbin/modprobe -s -k block-major-31, errno = 2    
VFS: Cannot open root device "1f                              
Please append a correct "root=" boot option                              
Kernel panic: VFS: Unable to mount root fs on 1f:04
Can anyone tell me what is wrong in my steps.
I have another problem. If I successfully booted the linux . What abou
the file system (like  /bin /proc /sbin). How it will be created? what
the steps to create it? Please guide in this issue.
Please forward all your suggessions to gaurav
Waiting for your reply.
Gaurav Sarode.

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