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Diffstat (limited to 'livecd-functions.sh')
| -rwxr-xr-x | livecd-functions.sh | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/livecd-functions.sh b/livecd-functions.sh new file mode 100755 index 0000000..d35721c --- /dev/null +++ b/livecd-functions.sh @@ -0,0 +1,206 @@ +#!/bin/bash +# Copyright 1999-2004 Gentoo Foundation +# Distributed under the terms of the GNU General Public License v2 +# $Header: /var/cvsroot/gentoo/src/livecd-tools/livecd-functions.sh,v 1.1 2005/04/12 21:25:21 wolf31o2 Exp $ + +# Global Variables: +# CDBOOT -- is booting off CD +# LIVECD_CONSOLE -- console that is specified to kernel commandline +# -- (ttyS0, tty1, etc). Only defined if passed to kernel +# LIVECD_CONSOLE_BAUD -- console baudrate specified +# LIVECD_CONSOLE_PARITY -- console parity specified +# LIVECD_CONSOLE_DATABITS -- console databits specified + +livecd_parse_opt() { + case "$1" in + *\=*) + echo "$1" | cut -f2 -d=;; + esac +} + +livecd_console_settings() { + # scan for a valid baud rate + case "$1" in + 300*) + LIVECD_CONSOLE_BAUD=300 + ;; + 600*) + LIVECD_CONSOLE_BAUD=600 + ;; + 1200*) + LIVECD_CONSOLE_BAUD=1200 + ;; + 2400*) + LIVECD_CONSOLE_BAUD=2400 + ;; + 4800*) + LIVECD_CONSOLE_BAUD=4800 + ;; + 9600*) + LIVECD_CONSOLE_BAUD=9600 + ;; + 14400*) + LIVECD_CONSOLE_BAUD=14400 + ;; + 19200*) + LIVECD_CONSOLE_BAUD=19200 + ;; + 28800*) + LIVECD_CONSOLE_BAUD=28800 + ;; + 38400*) + LIVECD_CONSOLE_BAUD=38400 + ;; + 57600*) + LIVECD_CONSOLE_BAUD=57600 + ;; + 115200*) + LIVECD_CONSOLE_BAUD=115200 + ;; + esac + if [ "${LIVECD_CONSOLE_BAUD}" = "" ] + then + # If it's a virtual console, set baud to 38400, if it's a serial + # console, set it to 9600 (by default anyhow) + case ${LIVECD_CONSOLE} in + tty[0-9]) + LIVECD_CONSOLE_BAUD=38400 + ;; + *) + LIVECD_CONSOLE_BAUD=9600 + ;; + esac + fi + export LIVECD_CONSOLE_BAUD + + # scan for a valid parity + # If the second to last byte is a [n,e,o] set parity + local parity + parity=`echo $1 | rev | cut -b 2-2` + case "$parity" in + [neo]) + LIVECD_CONSOLE_PARITY=$parity + ;; + esac + export LIVECD_CONSOLE_PARITY + + # scan for databits + # Only set databits if second to last character is parity + if [ "${LIVECD_CONSOLE_PARITY}" != "" ] + then + LIVECD_CONSOLE_DATABITS=`echo $1 | rev | cut -b 1` + fi + export LIVECD_CONSOLE_DATABITS + return 0 +} + + +livecd_read_commandline() { + local CMDLINE + +# Line to be used for testing only. The formatting of the console= +# prompt can be found in /usr/src/linux/Documentation/serial-console.txt +# possible cmdline could look like this: CMDLINE="cdroot console=ttyS0,9600n8" + + CMDLINE=`cat /proc/cmdline` + + for x in ${CMDLINE} + do + case "${x}" in + cdroot) + CDBOOT="yes" + export CDBOOT + ;; + cdroot\=*) + CDBOOT="yes" + export CDBOOT + ;; + console\=*) + local live_console + live_console=`livecd_parse_opt "${x}"` + + # Parse the console line. No options specified if + # no comma + LIVECD_CONSOLE=`echo ${live_console} | cut -f1 -d,` + if [ "${LIVECD_CONSOLE}" = "" ] + then + # no options specified + LIVECD_CONSOLE=${live_console} + else + # there are options, we need to parse them + local livecd_console_opts + livecd_console_opts=`echo ${live_console} | cut -f2 -d,` + livecd_console_settings ${livecd_console_opts} + fi + export LIVECD_CONSOLE + ;; + esac + done + return 0 +} + + +livecd_fix_inittab() { + if [ "${CDBOOT}" = "" ] + then + return 1 + fi + + # Comment out current getty settings + sed -i -e '/^c[0-9]/ s/^/#/' /etc/inittab + + # SPARC & HPPA console magic + if [ "${HOSTTYPE}" = "sparc" -o "${HOSTTYPE}" = "hppa" -o "${HOSTTYPE}" = "ppc64" ] + then + # Mount openprom tree for user debugging purposes + if [ "${HOSTTYPE}" = "sparc" ] + then + mount -t openpromfs none /proc/openprom + fi + + # SPARC serial port A, HPPA mux / serial + if [ -c "/dev/tts/0" ] + then + LIVECD_CONSOLE_BAUD=`stty -F /dev/tts/0 speed` + echo "s0:12345:respawn:/sbin/agetty -nl /bin/bashlogin ${LIVECD_CONSOLE_BAUD} tts/0 vt100" >> /etc/inittab + fi + # HPPA software PDC console (K-models) + if [ "${LIVECD_CONSOLE}" = "ttyB0" ] + then + mknod /dev/ttyB0 c 11 0 + LIVECD_CONSOLE_BAUD=`stty -F /dev/ttyB0 speed` + echo "b0:12345:respawn:/sbin/agetty -nl /bin/bashlogin ${LIVECD_CONSOLE_BAUD} ttyB0 vt100" >> /etc/inittab + fi + # FB / STI console + if [ -c "/dev/vc/1" ] + then + for x in 1 2 3 4 5 6 + do + echo "c${x}:12345:respawn:/sbin/mingetty --noclear --autologin root tty${x}" >> /etc/inittab + done + fi + if [ -c "/dev/hvc/0" ] + then + ln -s /dev/hvc/0 /dev/hvc0 + echo "c0:12345:respawn:/sbin/agetty -nl /bin/bashlogin 9600 hvc0 vt320" >> /etc/inittab + fi + # The rest... + else + if [ "${LIVECD_CONSOLE}" = "tty0" -o "${LIVECD_CONSOLE}" = "" ] + then + for x in 1 2 3 4 5 6 + do + echo "c${x}:12345:respawn:/sbin/agetty -nl /bin/bashlogin 38400 tty${x} linux" >> /etc/inittab + done + else + if [ -c "/dev/hvc/0" ] + then + ln -s /dev/hvc/0 /dev/hvc0 + echo "c0:12345:respawn:/sbin/agetty -nl /bin/bashlogin 9600 hvc0 vt320" >> /etc/inittab + else + echo "c0:12345:respawn:/sbin/agetty -nl /bin/bashlogin ${LIVECD_CONSOLE_BAUD} ${LIVECD_CONSOLE} vt100" >> /etc/inittab + fi + fi + fi + return 0 +} |