Re: serial console
Hi;
I rebuild the kernel with BOOTX_TEXT set and tried with 4 types of
command lines and all of them gives good serial console printout during
bootup until the point when it prints out "Freeing unused kernel memory:
232k init 4k prep". After
that, the serial console output is garbled. No login prompt.
(1) console=tts/0,115200n8 OR console=ttyCPM0,115200n8
(2) without "console=" OR console=ttyS0,115200n8
So this has not solved my problem. I need more advice. Here are some
more questions and observations:
(1) Martin Habets' comment:
If the init scripts don't set the tty speed it will probably default to
9600n8. Maybe adding an stty early on will help.
I need more help on this. Do you refer to sbin/init or some scripts
in /etc/ folder? Where should I set it?
[root@ShrekII etc 24]# pwd
/fadsroot/etc
[root@ShrekII etc 25]# grep -rn stty *
grep: alternatives/awk: No such file or directory
grep: alternatives/awk.1.gz: No such file or directory
grep: alternatives/builtins.7.gz: No such file or directory
grep: alternatives/editor: No such file or directory
grep: alternatives/editor.1.gz: No such file or directory
grep: alternatives/mt: No such file or directory
grep: alternatives/mt.1.gz: No such file or directory
grep: alternatives/nawk: No such file or directory
grep: alternatives/nawk.1.gz: No such file or directory
grep: alternatives/rmt: No such file or directory
grep: alternatives/rmt.8.gz: No such file or directory
grep: alternatives/traceroute: No such file or directory
grep: alternatives/traceroute.8.gz: No such file or directory
grep: alternatives/traceroute.sbin: No such file or directory
grep: alternatives/w: No such file or directory
grep: alternatives/w.1.gz: No such file or directory
grep: apache2/mods-enabled/userdir.conf: No such file or directory
grep: apache2/mods-enabled/userdir.load: No such file or directory
grep: apache2/sites-enabled/default: No such file or directory
init.d/rc:39: stty onlcr 0>&1
grep: network/run: No such file or directory
[root@ShrekII etc 26]#
To answer Sven Luther's question. yes I am runnning 2.4.26 on
PQ2FADS-ZU with MPC8280 on board. The serial port is an CPM SCC serial
device.
Thanks for any input and advice.
Regards,
TEH
Martin Habets <errandir_news@mph.eclipse.co.uk>@mph.eclipse.co.uk> on
10/05/2005 12:20:56 AM
Sent by: Martin Habets <mhabets@mph.eclipse.co.uk>
To: debian-powerpc@lists.debian.org
cc:
Subject: Re: serial console
On Tue, Oct 04, 2005 at 02:56:54PM +0800, KokHow Teh wrote:
> When I pass "console=tts/0,115200n8" to the kernel, I don't get any
> console output until the login prompt which I set to 115200 in
> /etc/inittab.
Make sure you have the BOOTX_TEXT config option set.
> This is what I end up without "console=" option passed to the
kernel:
>
> <snip>
> Mounted devfs on /dev
> Freeing unused kernel memory: 232k init 4k prep
>
..���.�...��������.��.�...�...���......�..�...���..�.�.��.��.....��[42;124H.
If the init scripts don't set the tty speed it will probably default to
9600n8. Maybe adding an stty early on will help.
--
Martin
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