Add working ext4 support for BPI-R2, but dirty for now

root/package/boot/uboot-mediatek/Makefile

@@ -0,0 +1,58 @@
+#
+# Copyright (C) 2013-2019 OpenWrt.org
+# Copyright (C) 2019 Alexey Loukianov
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/kernel.mk
+
+PKG_VERSION:=2019.01
+
+PKG_HASH:=50bd7e5a466ab828914d080d5f6a432345b500e8fba1ad3b7b61e95e60d51c22
+
+PKG_MAINTAINER:=Alexey Loukianov <lx2@lexa2.ru>
+
+include $(INCLUDE_DIR)/u-boot.mk
+include $(INCLUDE_DIR)/package.mk
+
+define U-Boot/Default
+  BUILD_TARGET:=mediatek
+  UBOOT_IMAGE:=u-boot.bin
+  UENV:=default
+  HIDDEN:=1
+endef
+
+define U-Boot/mt7623n_bpir2
+  BUILD_SUBTARGET:=mt7623
+  NAME:=Bannana PI R2 (mt7623)
+  BUILD_DEVICES:=7623n-bananapi-bpi-r2
+endef
+
+UBOOT_TARGETS := \
+	mt7623n_bpir2
+
+UBOOT_CONFIGURE_VARS += USE_PRIVATE_LIBGCC=yes
+
+UBOOT_MAKE_FLAGS = \
+	HOSTCC="$(HOSTCC)" \
+	HOSTCFLAGS="$(HOST_CFLAGS) $(HOST_CPPFLAGS) -std=gnu11" \
+	HOSTLDFLAGS="$(HOST_LDFLAGS)"
+
+define Build/Prepare
+        $(call Build/Prepare/Default)
+	$(CP) uEnv-$(UENV).txt ${PKG_BUILD_DIR}/uEnv.txt
+endef
+
+define Build/InstallDev
+	$(INSTALL_DIR) $(STAGING_DIR_IMAGE)
+	$(CP) $(PKG_BUILD_DIR)/$(UBOOT_IMAGE) $(STAGING_DIR_IMAGE)/$(BUILD_DEVICES)-uboot-mediatek.bin
+	$(CP) $(PKG_BUILD_DIR)/uEnv.txt $(STAGING_DIR_IMAGE)/$(BUILD_DEVICES)-uEnv.txt
+endef
+
+define Package/u-boot/install/default
+endef
+
+$(eval $(call BuildPackage/U-Boot))