rootfile system porting for FPGA [/bin/sh: can't access tty; job control turned off]

[Anirban Roy]

did u check whether /dev/console is registered...it is possible that it is
not created
On 07-May-2012 6:21 PM, "pcuser p" <pcuser.mails at gmail.com> wrote:

> Hi,
> I am newbie to linux kernel,doing kernel porting on a arm926ej-s FPGA
> board (only timer & uart hardware is available in the board)
>
> I'm using busybox for rootfs(busy box binary is built with "static" option
> enabled)
>
> After file system is mounted,I can see the below message,
> "VFS: Mounted root (cramfs filesystem) readonly on device 1:0."
> "Freeing init memory: 80K"
>
> I am expecting to get to shell prompt and give some commands (ls,clear)
> after file system gets mounted.
>
> *I am ending up in the shell prompt with the message as below:*
> "entered linuxrc script"
> "/bin/sh: can't access tty; job control turned off
> / $"
>
> I am getting no response from terminal for any commands entered in the
> shel lafter this.
>
> I went through this FAQ in http://www.busybox.net/FAQ.html#job_control
> I could not follow this exactly.
>
> my kernel commad line is
> "mem=32M console=ttySAC0,115200 root=/dev/ram0 init=/linuxrc
> initrd=0x80800000,8M user_debug=31"
>
>
> *I could see 2 issues here:*
> 1. I am using shell on /dev/console which is not correct  as mentioned in
> busybox FAQ
> 2. linuxrc and /etc/inittab files may not be correct.
>
> I  think the problem could be in both above 2 cases.
>
>
> Below are my /linuxrc and /etc/inittab file contents
> *linuxrc:
>
> *#!/bin/sh
> /bin/echo "entered linuxrc script"
> /bin/sh
> exec /sbin/init
>
> *
> /etc/inittab:*
>
> id:3:initdefault:
> # System initialization.
> si::sysinit:/etc/rc.d/rc.
> sysinit
> l0:0:wait:/etc/rc.d/rc 0
> l1:1:wait:/etc/rc.d/rc 1
> l2:2:wait:/etc/rc.d/rc 2
> l3:3:wait:/etc/rc.d/rc 3
> l4:4:wait:/etc/rc.d/rc 4
> l5:5:wait:/etc/rc.d/rc 5
> l6:6:wait:/etc/rc.d/rc 6
>
> # Trap CTRL-ALT-DELETE
> ca::ctrlaltdel:/sbin/shutdown -t3 -r now
>
> # When our UPS tells us power has failed, assume we have a few minutes
> # of power left.  Schedule a shutdown for 2 minutes from now.
> # This does, of course, assume you have powerd installed and your
> # UPS connected and working correctly.
> pf::powerfail:/sbin/shutdown -f -h +2 "Power Failure; System Shutting Down"
>
> # If power was restored before the shutdown kicked in, cancel it.
> pr:12345:powerokwait:/sbin/shutdown -c "Power Restored; Shutdown Cancelled"
>
> # Run gettys in standard runlevels
> 3:2345:respawn:/sbin/getty 115200 ttySAC0
>
>
>
> Can some experts suggest how to fix this two problems and get a shell
> prompt working?
>
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>
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