uboot-envtools: add support for Bananapi BPi-R3

Create new mediatek_filogic file and add entries for environment on
MMC, UBI and NOR for the Bananapi BPi-R3.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

package/boot/uboot-envtools/files/mediatek_filogic

@@ -0,0 +1,45 @@
+#
+# Copyright (C) 2021 OpenWrt.org
+#
+
+[ -e /etc/config/ubootenv ] && exit 0
+
+touch /etc/config/ubootenv
+
+. /lib/uboot-envtools.sh
+. /lib/functions.sh
+
+board=$(board_name)
+
+case "$board" in
+bananapi,bpi-r3)
+	. /lib/upgrade/common.sh
+	export_bootdevice
+	export_partdevice rootdev 0
+	case "$rootdev" in
+	mmc*)
+		local envdev=$(find_mmc_part "ubootenv" $rootdev)
+		ubootenv_add_uci_config "$envdev" "0x0" "0x40000" "0x40000" "1"
+		ubootenv_add_uci_config "$envdev" "0x40000" "0x40000" "0x40000" "1"
+		;;
+	mtd*)
+		local envdev=/dev/mtd$(find_mtd_index "u-boot-env")
+		ubootenv_add_uci_config "$envdev" "0x0" "0x20000" "0x20000" "1"
+		ubootenv_add_uci_config "$envdev" "0x20000" "0x20000" "0x20000" "1"
+		;;
+	*)
+		. /lib/upgrade/nand.sh
+		local envubi=$(nand_find_ubi ubi)
+		local envdev=/dev/$(nand_find_volume $envubi ubootenv)
+		local envdev2=/dev/$(nand_find_volume $envubi ubootenv2)
+		ubootenv_add_uci_config "$envdev" "0x0" "0x1f000" "0x1f000" "1"
+		ubootenv_add_uci_config "$envdev2" "0x0" "0x1f000" "0x1f000" "1"
+		;;
+	esac
+	;;
+esac
+
+config_load ubootenv
+config_foreach ubootenv_add_app_config ubootenv
+
+exit 0