Problem with Busybox shell

Scott Wood scottwood at
Wed Jan 19 07:59:31 EST 2011

On Tue, 18 Jan 2011 07:54:42 -0500
MohanReddy koppula <mohanreddykv at> wrote:

> Hi All,
> I am working on an MPC885 based custom board. I am able to boot up the
> linux (linux- I could see busybox shell (ash) prompt. But it
> is not accepting any inputs, I am not able to enter any command, it
> just hangs there. I am using ttyCPM0 terminal.
> I suspected if there was any problem in CPM driver interrupts
> generation and put some printk's in the interrupt handler and could
> see interrupts are raised and data is read, but shell is not taking
> the input.
> I wrote an init.c and opened the ttyCPM0 and tried to read from it,
> but couldn't. I am able to write to ttyCPM0 and see it on the host
> minicom.
> Please some one help me.

Check your pin and clock setup -- perhaps tx is set up correctly but rx


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