[Buildroot] understanding and using buildroot

[Ravi Kumar Kulkarni]

On Thu, Mar 25, 2010 at 12:27 PM, Ravi Kumar Kulkarni
<ravilinux4u at gmail.com> wrote:
> On Thu, Mar 25, 2010 at 12:30 PM, Lionel Landwerlin
> <llandwerlin at gmail.com> wrote:
>> Le jeudi 25 mars 2010 à 12:22 +0545, Ravi Kumar Kulkarni a écrit :
>>> Hi all,
>>>
>>> On Wed, Mar 24, 2010 at 1:34 AM, Lionel Landwerlin
>>> <llandwerlin at gmail.com> wrote:
>>> > Le mercredi 24 mars 2010 à 00:44 +0530, Ravi Kumar Kulkarni a écrit :
>>> >> On Wed, Mar 24, 2010 at 12:27 AM, Paulius Zaleckas
>>> >> <paulius.zaleckas at gmail.com> wrote:
>>> >> > On 03/23/2010 07:53 PM, Ravi Kumar Kulkarni wrote:
>>> >> >>
>>> >> >> Hello everybody,
>>> >> >> finally after 2 weeks of struggling i managed to build buildroot!
>>> >> >>  i have some doubts to clarify on usage of buildroot and regarding some
>>> >> >> packages
>>> >> >> i have built buildroot jffs2 image from using daily snapshot and
>>> >> >> booted onto target.
>>> >> >> but
>>> >> >> a)when i get login prompt what password should i enter for a user and for
>>> >> >> root?
>>> >> >
>>> >> > Initially password for root is empty. Just press Enter when you get asked
>>> >> > for password.
>>> >>  i pressed enter but it is again comin back to login only.any idea wat
>>> >> might be wrong?
>>> >
>>> > Same problem here ... I do not
>>> > Boot your kernel with option init=/bin/sh, then change the root
>>> > password.
>>> >
>>> >>
>>> >> >> b)and what should be enabled to so as to login as root?
>>> >> >
>>> >
>>> > You can edit the /etc/inittab file to login automatically as root by
>>> > default on the console. Like this :
>>> >
>>> > tty0::respawn:/bin/sh # GENERIC_SERIAL
>>> >
>>> > Quite useful for people doing development on your board.
>>> >
>>> I tried the above possible options but no luck !!  :( and im getting
>>> out of ideas!.
>>>
>>> this is what my console gives me when i tried to login
>>>
>>>
>>> (none) login: root
>>> Dec 31 17:01:01 (none) auth.info login[63]: root login on 'ttyS0'
>>> Dec 31 17:01:01 (none) daemon.info init: process '/sbin/getty -L ttyS0
>>> 115200 vt100 ' (pid 63) exited. Scheduling for restart.
>>> Dec 31 17:01:01 (none) daemon.info init: starting pid 64, tty
>>> '/dev/ttyS0': '/sbin/getty -L ttyS0 115200
>>>
>>>
>>>
>>> (none) login: user
>>> Password:
>>> Dec 31 17:01:08 (none) daemon.info init: process '/sbin/
>>>
>>> my /etc/ inittab file is shown below.
>>> # /etc/inittab
>>> #
>>> # Copyright (C) 2001 Erik Andersen <andersen at codepoet.org>
>>> #
>>> # Note: BusyBox init doesn't support runlevels.  The runlevels field is
>>> # completely ignored by BusyBox init. If you want runlevels, use
>>> # sysvinit.
>>> #
>>> # Format for each entry: <id>:<runlevels>:<action>:<process>
>>> #
>>> # id        == tty to run on, or empty for /dev/console
>>> # runlevels == ignored
>>> # action    == one of sysinit, respawn, askfirst, wait, and once
>>> # process   == program to run
>>>
>>> # Startup the system
>>> null::sysinit:/bin/mount -t proc none /proc
>>> null::sysinit:/bin/mount -t sysfs none /sys
>>> null::sysinit:/bin/mount -t tmpfs -o size=64k,mode=0755 none /dev
>>> null::sysinit:/bin/mkdir /dev/pts
>>> null::sysinit:/bin/mount -t devpts devpts /dev/pts
>>> null::sysinit:/bin/echo /sbin/mdev > /proc/sys/kernel/hotplug
>>> null::sysinit:/sbin/mdev -s
>>> null::sysinit:/bin/mount -o remount,rw /
>>> null::sysinit:/bin/mount -a
>>> null::sysinit:/bin/hostname -F /etc/hostname
>>> null::sysinit:/sbin/ifconfig lo 127.0.0.1 up
>>> null::sysinit:/sbin/route add -net 127.0.0.0 netmask 255.0.0.0 lo
>>> # now run any rc scripts
>>> null::sysinit:/etc/init.d/rcS
>>>
>>> # Set up a couple of getty's
>>> tty1::respawn:/sbin/getty 38400 tty1
>>> tty2::respawn:/sbin/getty 38400 tty2
>>>
>>>
>>>
>>> # Put a getty on the serial port
>>> ttyS0::respawn:/sbin/getty -L ttyS0 115200 vt100 # GENERIC_SERIAL
>>
>> Replace previous line by :
>>
>> ttyS0::respawn:/bin/sh
>
> i did  now im not login prompt also. im  gettin ths
>
>  17:00:12 (none) daemon.info init: process '/bin/sh' (pid 63) exited.
> Scheduling for restart.
>  17:00:12 (none) daemon.info init: starting pid 64, tty '/dev/ttyS0': '/bin/sh'
>
>>>
>>> # Logging junk
>>> null::sysinit:/bin/touch /var/log/messages
>>> null::respawn:/sbin/syslogd -n
>>> null::respawn:/sbin/klogd -n
>>> tty3::respawn:/usr/bin/tail -f /var/log/messages
>>>
>>> # Stuff to do for the 3-finger salute
>>> ::ctrlaltdel:/sbin/reboot
>>>
>>> # Stuff to do before rebooting
>>> null::shutdown:/usr/bin/killall klogd
>>> null::shutdown:/usr/bin/killall syslogd
>>> null::shutdown:/bin/umount -a -r
>>> null::shutdown:/sbin/swapoff -a
>>>
>

SOLVED ! The problem was in kernel config. kernel was not recognising
getty . now its working like a charm. thanks to buildroot
which allows to build filesystems at this ease.:) now im off to build
TinyX and hope to get xserver working.
warm regards,
Ravi Kulkarni