PL2: Build recovery installer as well

*Depends upon https://github.com/theimpulson/platform_manifest_twrp_omni/commit/43dfea1d8ccbe5b503eb01727ee8303099d96de9

BoardConfig.mk

@@ -62,6 +62,10 @@ TARGET_BOARD_PLATFORM_GPU := qcom-adreno508
 PLATFORM_VERSION := 16.1.0
 PLATFORM_SECURITY_PATCH := 2025-12-31
 
+# Installer
+USE_RECOVERY_INSTALLER := true
+RECOVERY_INSTALLER_PATH := $(LOCAL_PATH)/installer
+
 # Partitions
 BOARD_BOOTIMAGE_PARTITION_SIZE := 67108864
 BOARD_SYSTEMIMAGE_PARTITION_SIZE := 3036676096

installer/META-INF/com/google/android/update-binary

@@ -0,0 +1,85 @@
+#!/sbin/sh
+# LazyFlasher installer backend (for helper functions only)
+# Heavily modified by Dees_Troy and osm0sis
+
+tmp=/dev/tmp/twrp-install
+
+# detect when flashing in Magisk Manager
+ps | grep zygote | grep -v grep >/dev/null && BOOTMODE=true || BOOTMODE=false;
+$BOOTMODE || ps -A 2>/dev/null | grep zygote | grep -v grep >/dev/null && BOOTMODE=true;
+
+if [ "$3" ]; then
+	zip=$3
+	console=/proc/$$/fd/$2
+fi
+
+print() {
+	if $BOOTMODE; then
+		echo "$1"
+	else
+		if [ "$1" ]; then
+			echo "ui_print $1" > "$console"
+		else
+			echo "ui_print  " > "$console"
+		fi
+	fi
+}
+
+extract() {
+	rm -rf "$2"
+	mkdir -p "$2"
+	unzip -o "$1" -d "$2" || abort "Failed to extract zip to $2!"
+}
+
+print "########################################"
+print "#     TWRP installer for Nokia         #"
+print "#            by theimpulson            #"
+print "########################################"
+print
+
+# unpack the installer
+[ "$zip" ] && {
+	print "Unpacking the installer..."
+	extract "$zip" "$tmp"
+	print
+}
+cd "$tmp"
+toolname="/magiskboot"
+tool="$tmp$toolname"
+targetfile="/boot.img"
+target="$tmp$targetfile"
+recoverycpio=`(ls ramdisk-twrp.cpio || ls ramdisk-recovery.cpio) 2>/dev/null`
+
+chmod 755 "$tool"
+
+for slot in a b; do
+	print "Running boot image patcher on slot $slot..."
+	dd if=/dev/block/bootdevice/by-name/boot_$slot "of=$target"
+	"$tool" unpack -h boot.img
+
+	# kernel string want_initramfs -> skip_initramfs (Magisk)
+	"$tool" hexpatch kernel 77616E745F696E697472616D6673 736B69705F696E697472616D6673
+	# kernel string trip_initramfs -> skip_initramfs (SuperSU)
+	"$tool" hexpatch kernel 747269705F696E697472616D6673 736B69705F696E697472616D6673
+
+	# boot.img cmdline remove skip_override (flar2 patch)
+	sed -i "s|$(grep '^cmdline=' header | cut -d= -f2-)|$(grep '^cmdline=' header | cut -d= -f2- | sed -e 's/skip_override//' -e 's/  */ /g' -e 's/[ \t]*$//')|" header
+
+	cp -f $recoverycpio ramdisk.cpio
+	"$tool" repack boot.img
+	dd if=new-boot.img of=/dev/block/bootdevice/by-name/boot_$slot
+
+	"$tool" cleanup
+	rm -f new-boot.img
+done
+
+print
+print "Boot image patching complete!"
+
+cd /
+rm -rf /dev/tmp
+
+print
+print "Done installing TWRP!"
+print
+print "*** NOTE: You are now unrooted! ***"

installer/META-INF/com/google/android/updater-script

@@ -0,0 +1 @@
+#MAGISK