Correct /etc/gettydefs for a Serial Console
erick205 at umn.edu
Thu Apr 5 01:51:29 EST 2001
On Tue, 3 Apr 2001, Brian Kuschak wrote:
> Second issue first. You need to change the si line to this. This
> causes init to wait until this is finished before continuing.
> I use the following line in my gettydefs:
> # 9600 baud Dumb Terminal entry
> DT9600# B9600 CS8 CLOCAL # B9600 SANE -ISTRIP CLOCAL #@S login: #DT9600
> And this in my inittab:
> # Run gettys in standard runlevels
> cn1:123:respawn:/sbin/getty -h ttyS0 DT9600 vt100
> This works well on a custom PPC405 board.
Unfortunately, neither of these changes seemed to influence much. However,
what was different is that I'd previously specified my getty line as:
co:123:respawn:/sbin/getty console console
Changing it to:
co:123:respawn:/sbin/getty ttyS0 console
didn't do much to help my "CR/NL" problem as shown below. In playing with
it though, I did change ttyS0 to ttyS1 (the other serial port). This DID
fix the below "CR/NL" problem as desired; however, now the console login
prompt shows up on the wrong port.
What finally DID work was to move the 'co' inittab entry to the bottom,
AFTER all the 'l#' entries.
Thanks for the tip which got me going in the direction I needed!
> -----Original Message-----
> From: Grant Erickson [mailto:erick205 at umn.edu]
> Sent: Tuesday, April 03, 2001 8:58 AM
> To: linuxppc-embedded at lists.linuxppc.org
> Subject: Correct /etc/gettydefs for a Serial Console
> I am trying to debug two issues with the look and feel of a serial console
> on a IBM PowerPC 405GP Walnut board.
> Issue 1)
> - After the first few lines of text spew out for user-space
> process kick-off, the end-of-line characters get translated
> INIT: Entering runlevel: 3
> The system is coming up.
> Network daemons: portmap.
> NIS domain: borg-nis
> NIS daemons: ypbind.
> Linux (walnut)
> walnut console login: .
> NFS daemons: automount.
> Internet daemons:
> Log daemons: syslogd klogd.
> RPC daemons: rstatd rusersd.
> I suspect that the problem is with my /etc/gettydefs file:
> # Line settings and hunt sequences for TTY ports used by getty.
> # <speed># <init flags> # <final flags> #<login
> # Serial Console entry
> console# B9600 CLOCAL # B9600 SANE TAB3 CLOCAL #\r\n\n at S console
> login: #console
> Does anyone have a more reasonable /etc/gettydefs. I suspect I
> might need ONLCR?
> Issue 2)
> - The console prompt from getty comes up before the daemons
> executed by the scripts in /etc/rc.d/rc3.d are finished (see
> above example). I suspect that there's a possible problem in my
> # System V init run level process control file
> # Default run level
> # System initialization.
> # System console
> co:123:respawn:/sbin/getty console console
> l0:0:wait:/etc/rc.d/rc 0
> l1:1:wait:/etc/rc.d/rc 1
> l2:2:wait:/etc/rc.d/rc 2
> l3:3:wait:/etc/rc.d/rc 3
> l4:4:wait:/etc/rc.d/rc 4
> l5:5:wait:/etc/rc.d/rc 5
> l6:6:wait:/etc/rc.d/rc 6
> Any ideas?
> Grant Erickson
> Grant Erickson University of Minnesota Alumni
> o mail:erick205 at umn.edu 1996 BSEE
> o http://www.umn.edu/~erick205 1998 MSEE
Grant Erickson University of Minnesota Alumni
o mail:erick205 at umn.edu 1996 BSEE
o http://www.umn.edu/~erick205 1998 MSEE
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