u-boot: create spl loader (#72)

Author: henkwiedig

board/radxa/zero3/flash.mk

@@ -1,7 +1,7 @@
 # Paths
 RKTOOL          = $(HOST_DIR)/bin/rkdeveloptool
 RKBIN_BUILD_DIR  = $(BUILD_DIR)/rockchip-rkbin-custom
-LOADER_BIN       = $(RKBIN_BUILD_DIR)/bin/rk35/rk356x_spl_loader_v1.23.114.bin
+LOADER_BIN       = $(ROCKCHIP_RKBIN_DIR)/rk356x_spl_loader_v1.23.114.bin
 
 FLASH_IMG        = $(BINARIES_DIR)/sdcard.img
 ROOTFS_IMG       = $(BINARIES_DIR)/rootfs.squashfs

package/rockchip-rkbin/rockchip-rkbin.mk

@@ -0,0 +1,6 @@
+# Create loader bin to be used by rkdeveloptool
+define ROCKCHIP_RKBIN_MERGE_LOADER_BIN
+	cd $(@D) && \
+		./tools/boot_merger RKBOOT/RK3566MINIALL.ini
+endef
+ROCKCHIP_RKBIN_POST_BUILD_HOOKS += ROCKCHIP_RKBIN_MERGE_LOADER_BIN