[script] Flash all

And a list if device to NEVER flash
And more check

scripts/flash_all

@@ -1,6 +1,9 @@
 #!/bin/bash
 haveSerial=false
 serial=""
+used_serial=""
+forbidden_serials="b06474cb"
+
 function usage {
 	echo -e "Usage: $(basename $0) [-s serialNumber] [IMGLIST]"
 	echo -e "       IMGLIST is a list of file in .img separated by space"
@@ -8,6 +11,76 @@ function usage {
 	echo -e "       e.g. $(basename $0) -s 132456789 out/target/device/boot.img out/target/device/system.img"
 }
 
+function check_forbidden_serial {
+	if [[ $forbidden_serials =~ $1 ]]; then
+		echo "Error: You should not flash this device !"
+		echo "       Goodbye!"
+		exit 1
+	fi
+}
+
+function check_fastboot_serial {
+	serials=$(fastboot devices | grep "fastboot" | awk '{print $1}')
+	nb_device=$(fastboot devices | grep "fastboot" | wc -l)
+	if $haveSerial; then
+		if [[ ! $serials =~ $serial ]]; then
+			echo "Cannot find provided serial $serial: Expecting the device to be rebooting in fastboot mode "
+		fi
+		used_serial=$serial
+	elif [[ $nb_device != 1 ]]; then
+		echo "Error: Too much device connected!"
+		echo "       Provide a serial number with -s option or disconnect a device"
+		exit 1
+	else
+		used_serial=$serials
+	fi
+	check_forbidden_serial $used_serial
+}
+
+function reboot_and_wait_for_device {
+	check_forbidden_serial $1
+	adb -s $1 reboot bootloader;
+	fastboot devices | grep $1 >/dev/null 2>1
+	while [ $? == 1 ]; do
+		sleep 1;
+		echo "Waiting for $1 in fastboot mode..."
+		fastboot devices | grep $1 >/dev/null 2>1
+	done
+}
+
+function check_presence {
+	if $haveSerial ; then
+		fastboot devices | grep $serial >/dev/null 2>1
+		if [[ $? == 1 ]] ; then
+			adb devices | grep $serial >/dev/null 2>1
+			if [[ $? == 0 ]] ; then
+				reboot_and_wait_for_device $serial
+			else
+				echo "Error: Cannot found device $seial"
+				exit 1;
+			fi
+		fi
+	else
+		nb_dev=$(fastboot devices | grep "fastboot" | wc -l)
+		if [[ $nb_dev == 0 ]]; then
+			nb_dev=$(adb devices | grep "\<device\>"| wc -l )
+			if [[ $nb_dev == 0 ]]; then
+				echo "Error: Cannot found any device in fastboot or adb mode"
+				exit 1;
+			elif [[ $nb_dev == 1 ]]; then
+				dev=$(adb devices | grep "\<device\>" | awk '{print $1}')
+				echo "Reboot device $dev in fastboot mode"
+				serial=$dev
+				haveSerial=true
+				reboot_and_wait_for_device $serial
+			else
+				echo "Too much adb devices connected. Select one with -s or disconnect a device or reboot one in fastboot mode"
+				exit 1
+			fi
+		fi
+	fi
+}
+
 while getopts ":s:" opt; do
 	case $opt in
 		s) echo "Using Serial $OPTARG"
@@ -23,9 +96,13 @@ while getopts ":s:" opt; do
 done
 shift $(( OPTIND - 1 ))
 
+if $haveSerial ; then
+	check_forbidden_serial $serial
+fi
+
 if [ $# -eq 0 ];
 then
-	imgList=$(ls *.img)
+	imgList=$(ls *.img 2>/dev/null)
 	echo "Flashing all images in current path $imgList"
 else
 	imgList=$@
@@ -36,20 +113,12 @@ then
 	echo "No img to Flash"
 	exit 1
 else
-	echo "Reboot device in fastboot"
+	check_presence
-	if $haveSerial ; then
+	check_fastboot_serial
-		adb -s $serial reboot bootloader;
-	else
-		adb reboot bootloader;
-	fi
 	echo "Flashing images"
 	for img in $imgList; do
 		imageName=$(basename $img)
 		imageName=${imageName%.img}
-		if $haveSerial ; then
+		echo "fastboot -s $used_serial -S 256M flash ${imageName} $img;"
-			fastboot -s $serial -S 256M flash ${imageName} $img;
-		else
-			fastboot -S 256M flash ${imageName} $img;
-		fi
 	done && fastboot reboot
 fi