[Buildroot] Unable to login to buildroot

[Guillaume Dargaud]

> There isn't any reason that these folders for containing something 
> because proc, sysfs, devpts and tmpfs (generally used on /tmp) are 
> virtual filesystems handled by the kernel ... there isn't anything 
> written on the disk.

OK, I suspected as much...

> If you didn't see anything it means that init get executed but the 
> console isn't started on the serial port.
> Do a simply test: set as init, on boot options, /bin/ls (for example), 
> just to see if something is showed on the serial console after the boot.

I'm not sure I understand.
sbin/init is already a symbolic link to bin/busybox. Should I make that a 
symbolic link to ls ?

If I add the following to inittab:
::wait:/bin/ls -alF / /tmp

I get:
...
[   33.070279] Freeing unused kernel memory: 108k init
/:
total 52
drwxr-xr-x   16 root     root          4096 Feb 24  2011 ./
drwxr-xr-x   16 root     root          4096 Feb 24  2011 ../
drwxr-xr-x    2 root     root          4096 Feb 24  2011 bin/
drwxr-xr-x    6 root     root          4096 Feb 24  2011 dev/
drwxr-xr-x    7 root     root          4096 Feb 24  2011 etc/
drwxr-xr-x    3 root     root          4096 Feb 24  2011 home/
drwxr-xr-x    2 root     root          4096 Feb 24  2011 lib/
lrwxrwxrwx    1 root     root            11 Feb 24  2011 linuxrc -> 
bin/busybox*
drwxr-xr-x    2 root     root          4096 Feb 24  2011 mnt/
drwxr-xr-x    2 root     root          4096 Feb 24  2011 opt/
dr-xr-xr-x   26 root     root             0 Jan  1 00:00 proc/
drwxr-xr-x    2 root     root          4096 Feb 24  2011 root/
drwxr-xr-x    2 root     root          4096 Feb 24  2011 sbin/
drwxr-xr-x   11 root     root             0 Jan  1 00:00 sys/
drwxrwxrwt    2 root     root            80 Jan  1 00:00 tmp/
drwxr-xr-x    6 root     root          4096 Feb 24  2011 usr/
drwxr-xr-x    3 root     root          4096 Feb 14  2011 var/

/tmp:
total 4
drwxrwxrwt    2 root     root            80 Jan  1 00:00 ./
drwxr-xr-x   16 root     root          4096 Feb 24  2011 ../
-rw-r--r--    1 root     root             0 Jan  1 00:00 messages
-rw-r--r--    1 root     root             0 Jan  1 00:00 utmp

Welcome to the Gandalf acquisition
gandalf login: root
Password:
Jan  1 00:00:57 login[255]: root login on 'ttyUL0'

Welcome to the Gandalf acquisition
gandalf login:

And still can't login.
And if it's only a tty problem, why is rcS not launched ?

> If something get showed, it means that, with high probability, the only 
> problem is that getty isn't started on the right console. Have you tried 
> to start getty on ttyUL1? Can be that ttyUL0 is used for something else 
> on the board (but really, i don't know).

That doesn't display anything after "Freeing unused kernel memory"
-- 
Guillaume Dargaud
http://www.gdargaud.net/