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" <[email protected]> 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? > > _______________________________________________ > Kernelnewbies mailing list > [email protected] > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > >
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