1 files changed, 128 insertions, 0 deletions
diff --git a/recipes/initscripts/initscripts-openmoko/campgsm b/recipes/initscripts/initscripts-openmoko/campgsm
new file mode 100644
index 0000000000..5be67086c2
--- /dev/null
+++ b/recipes/initscripts/initscripts-openmoko/campgsm
@@ -0,0 +1,128 @@
+#!/bin/sh
+
+VERBOSE=no
+
+PIDS=`pidof -x "$0"`
+
+# make sure pidof sees us
+if [ -z "$PIDS" ]; then
+	exec "$0"
+	exit 1
+fi
+
+GSM_DEVICE="/dev/ttySAC0"
+GSM_POWER="/sys/devices/platform/neo1973-pm-gsm.0/power_on"
+GSM_RESET="/sys/devices/platform/neo1973-pm-gsm.0/reset"
+
+GSM_COMMANDS="Z E0V1 +CFUN=1 +COPS=0"
+
+gsm_running () {
+	if [ "$PIDS" != "$$" ]; then
+		return 0
+	else
+		return 1
+	fi
+}
+
+gsm_send () {
+	cmd="$1"
+	echo -ne "AT${cmd}\r" > "$GSM_DEVICE"
+}
+
+# this function might block forever
+gsm_wait () {
+	ret="UNKNOWN"
+
+	while read status; do
+		case "$status" in
+			OK*)
+				ret="OK"
+				;;
+			ERROR*)
+				ret="ERROR"
+				;;
+			*)
+				ret="UNKNOWN"
+				;;
+		esac
+		if [ "x$ret" != "xUNKNOWN" ]; then
+			break
+		fi
+	done < "$GSM_DEVICE"
+
+	if [ "x$ret" != "xOK" ]; then
+		return 1
+	fi
+
+	return 0
+}
+
+gsm_setup () {
+	[ $VERBOSE == "yes" ] && echo -n "Powering up GSM modem..."
+	echo 0 > "$GSM_POWER"; sleep 1
+	echo 1 > "$GSM_POWER"; sleep 1
+	echo 1 > "$GSM_RESET"; sleep 1
+	echo 0 > "$GSM_RESET"; sleep 4
+	[ $VERBOSE == "yes" ] && echo "done"
+
+	stty -F "$GSM_DEVICE" cooked -opost -echo crtscts 115200
+}
+
+gsm_wakeup () {
+	[ $VERBOSE == "yes" ] && echo "Waking up GSM modem"
+
+	# there is at most one OK/ERROR even if we send multiple commands
+	gsm_send ""
+	gsm_send ""
+	gsm_send ""
+
+	if gsm_wait; then
+		[ $VERBOSE == "yes" ] && echo "GSM modem awake"
+		return 0
+	else
+		echo "failed to wake up GSM modem"
+		return 1
+	fi
+}
+
+start () {
+	gsm_setup
+
+	if gsm_wakeup; then
+		for cmd in $GSM_COMMANDS
+		do
+			[ $VERBOSE == "yes" ] && echo "Sending AT$cmd"
+			gsm_send "$cmd"
+
+			if ! gsm_wait; then
+				echo "AT$cmd failed"
+				break
+			fi
+		done
+	fi
+}
+
+set -e
+
+case "$1" in
+	start)
+		if gsm_running; then
+			echo "Another instance is already running"
+			exit 1
+		fi
+
+		start &
+		;;
+	stop)
+		if gsm_running; then
+			PIDS=`pidof -x -o "$$" "$0"`
+			echo -n "Stopping other instances..."
+			kill $PIDS
+			echo "done"
+		fi
+		;;
+	*)
+		echo "Usage: $0 {start|stop}"
+		exit 1
+		;;
+esac