- Implemented makefile for standalone freertos (neneco)

- Adjusted U-Boot config to support cach commands
-  Updated freertos nenco submodule

Makefile

@@ -8,14 +8,15 @@ srcPath:=$(curPath)/src
 imgPath:=$(curPath)/sdcard
 confPath:=$(curPath)/configs
 
-all: dir platform freertos linux bao
+all: dir platform freertos freertos_standalone linux bao
 
 dir:
 	@mkdir -p $(imgPath)
 
 include platform.mk
 include freertos.mk
+include freertos_standalone.mk
 include linux.mk
 include bao.mk
 
-.PHONY: dir all freertos
+.PHONY: dir all freertos freertos_standalone

freertos_standalone.mk

@@ -0,0 +1,6 @@
+freertos_st_src:=$(srcPath)/freertos-neneco-hartstone
+freertos_st_dest_image:=$(imgPath)/freertos_standalone.elf
+
+freertos_standalone $(freertos_st_dest_image): $(freertos_st_src)
+	$(MAKE) -C $(freertos_st_src)/RPI4_drivers/neneco
+	cp $(freertos_st_src)/RPI4_drivers/neneco/neneco.elf $(freertos_st_dest_image)

platform.mk

@@ -18,6 +18,7 @@ atf $(atf_dest_image): $(atf_src)
 
 u-boot $(uboot_dest_image): $(uboot_src)
 	$(MAKE) -C $(uboot_src) $(uboot_defconfig)
+	echo 'CONFIG_CMD_CACHE=y' >> $(uboot_src)/.config
 	$(MAKE) -C $(uboot_src) -j$(nproc) 
 	cp $(uboot_src)/u-boot.bin $(uboot_dest_image)