[Buildroot] cannot log to my build root

[Thomas Petazzoni <thomas.petazzoni@free-electrons.com>]

On Tue, 14 Dec 2010 16:54:00 +0200
Diego Iastrubni <diegoiast@gmail.com> wrote:

> VFS: Mounted root (nfs filesystem) on device 0:12.
> Freeing init memory: 152K
> Populating /dev using udev: done
> Initializing random number generator... read-only file system
> detected...done
> Starting network...
> ip: RTNETLINK answers: File exists
> GPIO_M: init
> usbcore: registered new interface driver fjveincam
> v2.21:USB PalmVeinCam driver
> net eth0: MAC Address: 00:11:22:33:44:57
> */bin/sh: can't access tty; job control turned off*
> 
> The line before comes from some S90* init.d script (this is OK). I don't
> understand where does it come from.

This last line "can't access tty; job control turned off" means that
the shell has been started directly on /dev/console, which is normal is
you start a shell directly from an init.d script, because those scripts
are executed with /dev/console as the standard input, standard output,
standard err.

You really having *nothing* else on the serial line after what you
sent ?

According to your Buildroot configuration, your /etc/inittab should
contain a line :

ttyS0::respawn:/sbin/getty -L ttyS0 115200 vt100 # GENERIC_SERIAL

and you should see a login prompt on this serial line.

It's the /etc/inittab file that decides on which terminals a login
prompt should appear, by starting a getty program on those terminals.

What does your /etc/inittab look like ?

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com