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f557468cb8
Usually, getty(8) does the trick, but if you just need a serial console without getty(8), here's how.
169 lines
5.0 KiB
Bash
169 lines
5.0 KiB
Bash
#!/bin/sh
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#
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# Copyright (c) 1996 Andrey A. Chernov
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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# PROVIDE: serial
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# REQUIRE: root
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# KEYWORD: nojail
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# Change some defaults for serial devices.
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# Standard defaults are:
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# dtrwait 300 drainwait `sysctl -n kern.drainwait`
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# initial cflag from <sys/ttydefaults.h> = cread cs8 hupcl
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# initial iflag, lflag and oflag all 0
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# speed 9600
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# special chars from <sys/ttydefaults.h>
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# nothing locked
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# except for serial consoles the initial iflag, lflag and oflag are from
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# <sys/ttydefaults.h> and clocal is locked on.
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default() {
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# Reset everything changed by the other functions to initial defaults.
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dc=$1; shift # device name character
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drainwait=`sysctl -n kern.drainwait`
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for i in $*
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do
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comcontrol /dev/tty${dc}${i} dtrwait 300 drainwait $drainwait
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stty < /dev/tty${dc}${i}.init -clocal crtscts hupcl 9600 reprint ^R
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stty < /dev/tty${dc}${i}.lock -clocal -crtscts -hupcl 0
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stty < /dev/cua${dc}${i}.init -clocal crtscts hupcl 9600 reprint ^R
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stty < /dev/cua${dc}${i}.lock -clocal -crtscts -hupcl 0
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done
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}
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maybe() {
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# Special settings.
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dc=$1; shift
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for i in $*
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do
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# Don't use ^R; it breaks bash's ^R when typed ahead.
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stty < /dev/tty${dc}${i}.init reprint undef
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stty < /dev/cua${dc}${i}.init reprint undef
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# Lock clocal off on dialin device for security.
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stty < /dev/tty${dc}${i}.lock clocal
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# Lock the speeds to use old binaries that don't support them.
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# Any legal speed works to lock the initial speed.
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stty < /dev/tty${dc}${i}.lock 300
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stty < /dev/cua${dc}${i}.lock 300
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done
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}
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modem() {
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# Modem that supports CTS and perhaps RTS handshaking.
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dc=$1; shift
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for i in $*
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do
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# may depend on modem
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comcontrol /dev/tty${dc}${i} dtrwait 100 drainwait 180
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# Lock crtscts on.
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# Speed reasonable for V42bis.
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stty < /dev/tty${dc}${i}.init crtscts 115200
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stty < /dev/tty${dc}${i}.lock crtscts
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stty < /dev/cua${dc}${i}.init crtscts 115200
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stty < /dev/cua${dc}${i}.lock crtscts
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done
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}
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mouse() {
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# Mouse on either callin or callout port.
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dc=$1; shift
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for i in $*
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do
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# Lock clocal on, hupcl off.
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# Standard speed for Microsoft mouse.
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stty < /dev/tty${dc}${i}.init clocal -hupcl 1200
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stty < /dev/tty${dc}${i}.lock clocal hupcl
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stty < /dev/cua${dc}${i}.init clocal -hupcl 1200
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stty < /dev/cua${dc}${i}.lock clocal hupcl
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done
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}
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terminal() {
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# Terminal that supports CTS and perhaps RTS handshaking
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# with the cable or terminal arranged so that DCD is on
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# at least while the terminal is on.
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# Also works for bidirectional communications to another pc
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# provided at most one side runs getty.
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# Same as modem() except we want a faster speed and no dtrwait.
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dc=$1; shift
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modem ${dc} $*
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for i in $*
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do
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comcontrol /dev/tty${dc}${i} dtrwait 0
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stty < /dev/tty${dc}${i}.init 115200
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stty < /dev/cua${dc}${i}.init 115200
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done
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}
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3wire() {
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# 3-wire serial terminals. These don't supply carrier, so
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# clocal needs to be set, and crtscts needs to be unset.
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dc=$1; shift
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terminal ${dc} $*
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for i in $*
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do
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stty < /dev/tty${dc}${i}.init clocal -crtscts
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stty < /dev/cua${dc}${i}.init clocal -crtscts
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done
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}
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# Don't use anything from this file unless you have some buggy programs
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# that require it.
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# Edit the functions and the examples to suit your system.
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# $1 is the device identifier, and the remainder of the line
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# lists the device numbers.
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# Initialize assorted 8250-16550 (sio) ports.
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# maybe d 0 1 2 3 4 5 6 7 8 9 a b c d e f g h i j k l m n o p q r s t u v
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# mouse d 2
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# modem d 1
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# terminal d 0
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# 3wire d 0
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# Initialize all ports on a Cyclades-8yo.
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# modem c 00 01 02 03 04 05 06 07
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# Initialize all ports on a Cyclades-16ye.
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# modem c 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
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# Initialize all ports on a Digiboard 8.
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# modem D 00 01 02 03 04 05 06 07
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