In message <20030116044911.1234.qmail at web41201.mail.yahoo.com> you wrote:
>
> 1. How can i see the contents of a ramdisk? I
> downloaded one from denx and i want to see what is in
> there?
1. [in case of PPCBoot image:] strip header
2. Uncompress
3. Mount using the loopback device
For example:
# dd if=simple-ramdisk.PPCBoot of=simple-ramdisk.gz bs=64 skip=1
8874+1 records in
8874+1 records out
# gunzip simple-ramdisk.gz
# mount -o loop simple-ramdisk /mnt
# ls -lR /mnt
/mnt:
total 17
drwxr-xr-x 2 root root 1024 Jun 4 1999 bin
drwxr-xr-x 2 root root 1024 Oct 2 2000 dev
drwxr-xr-x 2 root root 1024 Jun 4 1999 etc
drwxr-xr-x 2 root root 1024 Jun 4 1999 lib
-rwxr-xr-x 1 root root 136 Jan 11 1999 linuxrc
drwxr-xr-x 2 root root 12288 Jun 4 1999 lost+found
/mnt/bin:
total 463
-rwxr-xr-x 1 root root 37480 Mar 1 1998 date
-rwxr-xr-x 1 root root 54584 Sep 8 1998 ls
-rwxr-xr-x 1 root root 375704 Sep 8 1998 sh
/mnt/dev:
total 0
crw-r--r-- 1 root root 5, 1 Mar 22 2000 console
crw-rw-rw- 1 root root 5, 0 Jun 4 1999 tty
crw-rw-rw- 1 root root 4, 64 Jun 4 1999 ttyS0
/mnt/etc:
total 0
-rw-r--r-- 1 root root 0 Jan 11 1999 mtab
/mnt/lib:
total 1042
-rwxr-xr-x 1 root root 83138 Apr 24 2001 ld.so.1
-rwxr-xr-x 1 root root 825404 Sep 8 1998 libc-1.99.so
-rw-r--r-- 1 root root 53356 Jan 11 1999 libcrypt.so.1
lrwxrwxrwx 1 root root 12 Jun 4 1999 libc.so.6 ->
libc-1.99.so
-rw-r--r-- 1 root root 61586 Jan 11 1999 libproc.so.1.2.6
lrwxrwxrwx 1 root root 19 Jun 4 1999 libtermcap.so.2 ->
libtermcap.so.2.0.8
-rwxr-xr-x 1 root root 30152 Sep 8 1998 libtermcap.so.2.0.8
/mnt/lost+found:
total 0
#
> 2. In ${LINUX_ROOT}/init/main.c -> init(), after
> prepare_namespace (which basically does the inintrd
> mount), open syscall on '/dev/console' fails. But
> still control goes further and executes
> 'execve("/bin/sh")'. My question is where does the
> output of /bin/sh execution goes? Not to my dumb
> terminal? I see nothing. Infact my dumb terminal just
> stops there. No kernel panic. Any clues?
Solve problems sequentially. Why does open '/dev/console' fail ?
> Note: In my case i do not have enough infrastructure
> to have the standard NS16550 is working. So i have to
> port some other driver as my serial driver. ANything
> related to this?
There may be some other problems. Sorry for being vague - I'm as
precise as you are with your statement about "some other driver". If
you want helpful answers you must provide all the little details.
Best regards,
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de
"Probably the best operating system in the world is the [operating
system] made for the PDP-11 by Bell Laboratories."
- Ted Nelson, October 1977
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