help needed to bringup init and shell
Maria Arpa
m_arpa84 at yahoo.com
Fri Apr 6 20:36:20 PDT 2007
Hello,
I need your help in bringing up busybox on my arm9 based platform. Here are some details:
1- I have Linux kernel 2.6.17 brought up on my arm9 based platform. I am able to put a small
program and get it executed as /sbin/init. This program opens a file descriptor at
"/dev/ttyS1" and is able to read and write.
2- My next step is to bringup a shell on my platform. I want to use busybox for this.
Following are some details:
- I use ramdisk.
Directories and files:
/etc/inittab
/etc/init.d/rcS
/dev/console
/dev/ttyS0
/dev/ttyS1
/sbin/init [symlink to busybox program in /bin/busybox]
/sbin/getty [symlink to busybox program in /bin/busybox]
/bin/busybox
/bin/* [commonly used programs - symlink to busybox]
- inittab file details
null::sysinit:/bin/mount -o remount,rw /
null::sysinit:/bin/mount -t proc proc /proc
null::sysinit:/bin/mount -a
ttyS1::sysinit:/etc/init.d/rcS
ttyS1::respawn:/sbin/getty 57600 ttyS1
- init.d/rcS file
#!/bin/sh
#nothing more here
3- I am stuck at following place:
I have kernel boot up and give control to init. I have busybox as my init. I donot see
the starting init message and the prompt doesn't come. I have a strange print as below,
sh: appl
(n
and then it gets stuck here.
Any suggestions on what I am doing wrong and guidance will greatly help.
Thankyou,
Maria
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