Add efivarfs module, Add check if iso booted in uefi mode

Makefile

@@ -2,4 +2,4 @@ iso:
 	sudo mkteaiso -o ${PWD}/out -p ${PWD}
 
 clean:
-	rm -f ${PWD}/out/*.iso
+	sudo rm -f ${PWD}/out/*.iso

airootfs/root/install.sh

@@ -106,6 +106,39 @@ function preChecks() {
     esac
   fi
 
+  # Check if booted in UEFI
+  if [ ! -d /sys/firmware/efi ]; then
+    dialog --stdout --clear --no-collapse --yes-label "Shutdown" --nolabel "Alpine shell" --yesno "The ISO hasn't been booted in UEFI mode. Please boot the ISO in UEFI to proceed installation" 6 50
+    case $? in
+    0)
+      clear
+      COUNTER=5
+      echo "NoveriaOS is shutting down in: "
+      while [ 1 ]; do
+          if [ ${COUNTER} -eq 0 ]; then
+              break
+          fi
+          echo -n "${COUNTER}"
+          COUNTER=$( echo "${COUNTER}-1" | bc )
+          sleep 0.2
+          for (( i=0; i<4; i++ )); do
+              echo -n "."
+              sleep 0.2
+          done
+      done
+      poweroff
+      ;;
+    1)
+      clear
+      exit 0
+      ;;
+    255)
+      clear
+      exit
+      ;;
+    esac
+  fi
+
   introDialogue
 }
 
@@ -300,7 +333,7 @@ function installation() {
   installationSubtaskTitle "Mount extra mounts for chroot"
   mount -t proc /proc "${INSTALLATION_MOUNTPOINT}/proc" || installationFailed
   mount -t sysfs /sys "${INSTALLATION_MOUNTPOINT}/sys" || installationFailed
-  mount -o bind /sys/firmware/efi/efivars "${INSTALLATION_MOUNTPOINT}/sys/firmware/efi/efivars/" || __installationFailed
+  mount -t efivarfs efivarfs "${INSTALLATION_MOUNTPOINT}/sys/firmware/efi/efivars" || installationFailed
   mount -o bind /dev "${INSTALLATION_MOUNTPOINT}/dev" || installationFailed
   mount -o bind /run "${INSTALLATION_MOUNTPOINT}/run" || installationFailed
 
@@ -336,6 +369,7 @@ function installation() {
 
   installationSubtaskTitle "Enable btrfs module"
   chroot "${INSTALLATION_MOUNTPOINT}" /bin/ash -c "echo 'btrfs' >> /etc/modules"
+  chroot "${INSTALLATION_MOUNTPOINT}" /bin/ash -c "echo 'efivarfs' >> /etc/modules"
 
   echo ""
   echo "┌──────────────────────────────────────────┐"

customize-airootfs.sh

@@ -26,3 +26,4 @@ sed -i 's~/sbin/getty 38400~/sbin/mingetty --autologin root --noclear~' /etc/ini
 
 # Add btrfs module
 echo "btrfs" | tee -a /etc/modules
+echo "efivarfs" | tee -a /etc/modules