ABL reset (#111)

* ABL reset

* update app

userspace/usr/comma/comma.sh

@@ -38,27 +38,18 @@ handle_setup_keys () {
   fi
 }
 
-# trigger factory reset if screen is pressed for 2s
-TOUCH_CNT=0
-for ((i=0; i < 100; i++)); do
-  # EV_KEY 330 = BTN_TOUCH, returns 10 when pressed
-  evtest --query /dev/input/by-path/platform-894000.i2c-event EV_KEY 330
-  if [ "$?" -eq 10 ]; then
-    ((TOUCH_CNT++))
-  fi
-  sleep 0.02
-done
-
-if [ -f "$RESET_TRIGGER" ] || (( TOUCH_CNT >= 10 )); then
-  echo "launching system reset"
+# factory reset handling
+if [ -f "$RESET_TRIGGER" ]; then
+  echo "launching system reset, reset trigger present"
   rm -f $RESET_TRIGGER
   $RESET
-fi
-
-# load system reset if userdata is not mounted
-if ! mountpoint -q /data; then
+elif ! mountpoint -q /data; then
   echo "userdata not mounted. loading system reset"
-  $RESET --recover
+  if [ "$(head -c 15 /dev/disk/by-partlabel/userdata)" == "COMMA_ABL_RESET" ]; then
+    $RESET --format
+  else
+    $RESET --recover
+  fi
 fi
 
 # symlink vscode to userdata