Makefile

################################################################
# Root Makefile of the whole project
################################################################

################################################################
# Basic Definitions
################################################################
BOOT		:=
KERNEL		?= freertos

################################################################
# Directories and Files
################################################################
SHELL		:= /bin/bash
PWD		:= $(shell pwd)
PRJDIR		:= $(PWD)

app_DIR		:= $(PRJDIR)/apps
bootloader_DIR	:= $(PRJDIR)/$(BOOT)
build_DIR	:= $(PRJDIR)/build
docs_DIR	:= $(PRJDIR)/docs
kernel_DIR	:= $(PRJDIR)/kernel/$(KERNEL)
fw_DIR		:= $(PRJDIR)/firmware
product_DIR	:= $(PRJDIR)/products
sign_tool_DIR	:= $(PRJDIR)/tools/sign_tool
adnl_DIR	:= $(PRJDIR)/tools/adnl

BUILD_DIR		:= $(PRJDIR)/output/$(BOARD)-$(PRODUCT)
docs_BUILD_DIR		:= $(PRJDIR)/output/docs
bootloader_BUILD_DIR	:= $(BUILD_DIR)/$(BOOT)
kernel_BUILD_DIR	:= $(BUILD_DIR)/$(KERNEL)
sign_tool_BUILD_DIR	:= $(sign_tool_DIR)
adnl_BUILD_DIR		:= $(adnl_DIR)

bootloader_BIN		:= $(bootloader_BUILD_DIR)/$(BOOT)/ext/mcuboot/mcuboot.bin
kernel_BIN		:= $(kernel_BUILD_DIR)/$(KERNEL).bin
fw_BIN			:= $(fw_DIR)/wcn-modem.bin
adnl_BIN		:= $(adnl_BUILD_DIR)/adnl

DIST_DIR		:= $(BUILD_DIR)/images
bootloader_dist_BIN	:= $(DIST_DIR)/mcuboot-signed.bin
kernel_dist_BIN		:= $(DIST_DIR)/$(KERNEL)-signed.bin
fw_dist_BIN		:= $(DIST_DIR)/wcn-modem.bin
adnl_dist_BIN		:= $(DIST_DIR)/adnl

bootloader_KEYPATH	= $(build_DIR)/key/rsa/3072
kernel_KEYPATH		= $(build_DIR)/key/rsa/2048
SIGNTOOL		= $(sign_tool_DIR)/imgtool.py

SDK_BASE	:= $(PRJDIR)
toolchain_DIR	:= $(build_DIR)/toolchains/$(COMPILER)-$(TOOLCHAIN_KEYWORD)
CROSSTOOL	:= $(build_DIR)/toolchains/$(COMPILER)*$(TOOLCHAIN_KEYWORD)*.tar.xz
PATH		:= $(toolchain_DIR)/bin:$(PATH)

XTENSA_CORE = Amlogic_v9
XTENSA_HOME = /opt/xtensa/XtDevTools/install/tools/RI-2020.5-linux/XtensaTools
XTENSA_SYSTEM = /opt/xtensa/XtDevTools/install/builds/RI-2020.5-linux/${XTENSA_CORE}/config
PATH := ${XTENSA_HOME}/bin:${PATH}

export PATH ARCH SOC BOARD KERNEL SDK_BASE kernel_BUILD_DIR XTENSA_CORE XTENSA_HOME XTENSA_SYSTEM

################################################################
# Macros
################################################################
# MESSAGE Macro -- display a message in bold type
MESSAGE = echo "$(TERM_BOLD)>>> $(1)$(TERM_RESET)"
TERM_BOLD := $(shell tput smso 2>/dev/null)
TERM_RESET := ${shell tput rmso 2>/dev/null}

SDK_VERSION := "$(shell date +%g.%V.%u)"
RELEASE_VERSION := "$(shell date +%g.%V.%u_%H_%M_%S)"

# Macro of Generating Buildsystem
# $(1): Target
define GENERATE_BUILDSYSTEM
$($(1)_BUILD_DIR): project
	@ mkdir -p $($(1)_BUILD_DIR)
# Auto-generate root CMakeLists.txt and Kconfig
	@ ./scripts/setup.sh
	@ if [ ! -f $($(1)_BUILD_DIR)/build.ninja ]; then \
		cmake -G Ninja -DBOARD=$(BOARD) -DCMAKE_TOOLCHAIN_FILE=$(build_DIR)/cmake/toolchains/$(ARCH)-gcc.cmake -S $(product_DIR)/$(PRODUCT) -B $($(1)_BUILD_DIR); \
	fi
endef

# Macro of Building CMake Targets
# $(1): Target
define GENERATE_CMAKE_TARGET
.PHONY: $(1)
$(1): toolchain $($(1)_BUILD_DIR)
	@ $(call MESSAGE,"Building $(1)")
	@ (if [ $(1) == kernel ]; then \
		cmake --build $($(1)_BUILD_DIR); \
	else \
		if [ $(1) == bootloader ]; then \
			if [ ! -d $(kernel_KEYPATH) ]; then \
				mkdir -p $(kernel_KEYPATH); \
			fi; \
			if [ ! -f $(kernel_KEYPATH)/*private.pem -o ! -f $(kernel_KEYPATH)/*public.pem ]; then \
				$(call MESSAGE,"Generating kernel key pair ..."); \
				python3 $(SIGNTOOL) keygen -k $(kernel_KEYPATH) -t rsa-2048; \
			fi; \
			$(call MESSAGE,"Attach kernel public key"); \
			python3 $(SIGNTOOL) getpub -k $(kernel_KEYPATH)/rsa2048-private.pem > $($(1)_DIR)/bl2/ext/mcuboot/rsa_pub_key.h; \
			if [ ! -d $($(1)_KEYPATH) ]; then \
				$(call MESSAGE,"Generating $(1) key pair ..."); \
				mkdir -p $($(1)_KEYPATH); \
			fi; \
			if [ ! -f $($(1)_KEYPATH)/*private.pem -o ! -f $($(1)_KEYPATH)/*public.pem ]; then \
				python3 $(SIGNTOOL) keygen -k $($(1)_KEYPATH) -t rsa-3072; \
			fi; \
		fi; \
		cmake $($(1)_DIR)/ -G"Unix Makefiles" -DBOARD=$(BOARD) -DPRODUCT=$(PRODUCT) -DCOMPILER=$(ARCH)-gcc; \
		cmake --build ./ -- install; \
	fi \
	)
endef

# Macro of Building Targets
# $(1): Target
define GENERATE_MAKE_TARGET
.PHONY: $(1)
$(1): toolchain
	@ $(call MESSAGE,"Building $(1)")
	@ (cd $($(1)_DIR) && $(MAKE))
endef

# Macro of Menuconfig Targets
# $(1): Target
# $(2): Target suffix
define GENERATE_MENUCONFIG_TARGET
.PHONY: $(if $(2),$(1)-$(2),$(1))
$(if $(2),$(1)-$(2),$(1)): $($(1)_BUILD_DIR)
	@ cmake --build $($(1)_BUILD_DIR) --target $(2)
endef

# Macro of Building Dist Targets
# $(1): Target
# $(2): Target suffix
define GENERATE_DIST_TARGET
.PHONY: $(if $(2),$(1)-$(2),$(1))
$(if $(2),$(1)-$(2),$(1)): $(1) $(DIST_DIR)
	@ if [ -f $($(1)_BIN) ]; then install -p $($(1)_BIN) $($(1)_$(2)_BIN); fi
endef

# Macro of Cleaning Targets
# $(1): Target
# $(2): Target suffix
define GENERATE_CLEAN_TARGET
.PHONY: $(if $(2),$(1)-$(2),$(1))
$(if $(2),$(1)-$(2),$(1)):
	@ $(call MESSAGE,"Cleaning $(1)")
	@ if [ -d $($(1)_BUILD_DIR) ]; then cmake --build $($(1)_BUILD_DIR) --target $(2); fi
endef

# Macro of Signing Image
# $(1): target binary
# $(2): header length
define SIGN_IMAGE
	if [ $(1) == bootloader ]; then \
		python3 $(SIGNTOOL) sign_bl2 -P $($(1)_KEYPATH) -H $(2) $($(1)_BIN) $($(1)_dist_BIN); \
	else \
		python3 $(SIGNTOOL) sign -k $($(1)_KEYPATH)/rsa2048-private.pem -H $(2) $($(1)_BIN) $($(1)_dist_BIN); \
	fi
endef

################################################################
# Targets
################################################################
BUILDSYSTEM_TARGETS	:= kernel
CMAKE_TARGETS		:= kernel
#MAKE_TARGETS		:= adnl
MENUCONFIG_TARGETS	:= kernel
INSTALL_TARGETS		:= $(CMAKE_TARGETS)
ALL_TARGETS		:= $(CMAKE_TARGETS) $(MAKE_TARGETS)
DIST_TARGETS		:= $(addsuffix -dist,$(INSTALL_TARGETS))
CLEAN_TARGETS		:= $(addsuffix -clean,$(ALL_TARGETS))

.PHONY: dist
dist: all $(DIST_TARGETS)
#arch for riscv not used the rtos-uImage with the follow command now
#	mkimage -A $(ARCH) -O u-boot -T standalone -C none -a 0x1000 -e 0x1000 -n rtos -d $(kernel_dist_BIN) $(DIST_DIR)/rtos-uImage
#	$(call SIGN_IMAGE,bootloader,512)
#	$(call SIGN_IMAGE,kernel,1024)

$(DIST_DIR):
	@ install -d $(DIST_DIR)

.PHONY: all
all: $(ALL_TARGETS)

.PHONY: clean
clean: $(CLEAN_TARGETS)

.PHONY: distclean
distclean:
	@ if [ -d $(BUILD_DIR) ]; then rm -rf $(BUILD_DIR); fi
	@ rm -f CMakeLists.txt Kconfig

.PHONY: project
project:
ifndef ARCH
	$(error ARCH is not set, Please execute source scripts/env.sh)
endif
ifndef SOC
	$(error SOC is not set, Please execute source scripts/env.sh)
endif
ifndef BOARD
	$(error BOARD is not set, Please execute source scripts/env.sh)
endif
ifndef PRODUCT
	$(error PRODUCT is not set, Please execute source scripts/env.sh)
endif
	@ $(call MESSAGE,"Building $(BOARD) \($(SOC)\) $(PRODUCT)")

.PHONY: docs
docs:
	@ cmake $($(1)_DIR)
	@ cmake --build ./

################################################################
# Respective Targets
################################################################
# Buildsystem Targets
$(foreach target,$(BUILDSYSTEM_TARGETS),$(eval $(call GENERATE_BUILDSYSTEM,$(target))))

# CMake Build Targets
$(foreach target,$(CMAKE_TARGETS),$(eval $(call GENERATE_CMAKE_TARGET,$(target))))

# Build Targets
$(foreach target,$(MAKE_TARGETS),$(eval $(call GENERATE_MAKE_TARGET,$(target))))

# Menuconfig Targets
#$(foreach target,$(MENUCONFIG_TARGETS),$(eval $(call GENERATE_MENUCONFIG_TARGET,$(target),menuconfig)))

# Dist Targets
$(foreach target,$(ALL_TARGETS) fw,$(eval $(call GENERATE_DIST_TARGET,$(target),dist)))

# Clean Targets
$(foreach target,$(ALL_TARGETS),$(eval $(call GENERATE_CLEAN_TARGET,$(target),clean)))

.PHONY: toolchain
toolchain:
ifndef COMPILER
	$(error COMPILER is not set, Please execute source scripts/env.sh)
endif
	@ if [[ "$(TOOLCHAIN_KEYWORD)-$(COMPILER)" != "xt-xcc" ]]; then \
		if [ ! -d $($@_DIR) ]; then \
			$(call MESSAGE,"Preparing $@"); \
			mkdir -p $($@_DIR); \
			tar -xf $(CROSSTOOL) -C $($@_DIR) --strip-components=1; \
			touch $($@_DIR); \
		fi; \
		if ( find $(CROSSTOOL) -newer $($@_DIR) | grep -q $(CROSSTOOL) ); then \
			$(call MESSAGE,"Updating $@"); \
			rm -rf $($@_DIR)/*; \
			tar -xf $(CROSSTOOL) -C $($@_DIR) --strip-components=1; \
			touch $($@_DIR); \
		fi; \
	fi

.PHONY: menuconfig
menuconfig: $(kernel_BUILD_DIR)
	@ cmake --build $(kernel_BUILD_DIR) --target $@

.PHONY: flash
flash:
	@ if [ -d $(DIST_DIR) ]; then \
		(cd $(DIST_DIR) && \
		./update_fw.sh;) \
	fi

.PHONY: release
release:
	@ (cd .. && \
	tar --exclude-vcs --exclude=cscope.* --exclude=.repo --exclude=output --exclude=cmake-Linux-x86_64 --exclude=gcc-arm-none-eabi \
	-cJf rtos_sdk_$(RELEASE_VERSION).tar.xz $(notdir $(PRJDIR)); \
	rm -f $(product_DIR)/$(PRODUCT)/include/version.h; \
	mv rtos_sdk_$(RELEASE_VERSION).tar.xz $(PRJDIR))