busybox output to lcd display

[Sudipta GHOSH]

Hi,

many thanks for the reply.

If I try like sh 1>&2 > /dev/tty0, is working. then I saw prompt and
programs output in lcd display.

I dont have any /etc/inittab.

I pass the following parameters to kernel during boot.

console=tty0 root=/dev/mtdblock4 rootfstype=jffs2 init=/bin/sh.

So how I can make it so the busybox shell prompt and programs output
will be in the lcd display.

I mean how kernel can start the busybox shell in tty0.

Regards,
-SG

2008/11/23 Denys Vlasenko <vda.linux at googlemail.com>:
> On Saturday 22 November 2008 19:56, Sudipta GHOSH wrote:
>> What I am missing or any info you want?
>>
>> In my development board, I use uboot as boot loader.
>>  busybox files are in flash.
>> when I boot , I can see the boot logo (peguin) in the lcd display and
>> all "printk" output.
>>
>> But I am unable to see the busybox in the lcd display.
>
> This is the confusing part. It's unclear what do you mean by
> "unable to see the busybox [output]". There is no "busybox"
> output per se, you can only see some output if some program
> (be it busybox applet or not) outputs something.
>
> So, you need to tell us _which_ busybox applet do you run
> and see its output on the wrong device, and from where and how
> (what command line parameters etc) do you run it.
>
>> busybox prompt and all output from busybox is going to the serial port.
>> Like  if I do ls, then I see the output of "ls" in my serial port
>> (teraterm/hyper terminal).
>
> I assume this actually means "shell prompt and everything
> I type in is seen on serial console".
>
>> How I can see busybox prompt and all output to my lcd display.
>
> By finding out where shell (which is most likely a busybox applet)
> is started, and what tty is given to it. Then fix tty name there.
>
>> I use console=tty0 in the bootargs.
>
> I assume you mean "I have 'console=tty0' on kernel command line".
> This merely makes your /dev/console be the same as /dev/tty0
> (as opposed to, say, serial console /dev/ttyS0).
>
> If your shell is given different tty to be on, kernel parameter
> does not matter.
>
> For example, if shell is started by init using /dev/inittab
> line like this:
>
> ttyS0::respawn:/bin/ash
>
> it will be on ttyS0.
> --
> vda
>