# Copyright (c) 2015-2016, NORDUnet A/S
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# absolute path, because we're going to be passing things to sub-makes
export TOPLEVEL = $(shell pwd)

# define board: dev-bridge or alpha
BOARD = TARGET_CRYPTECH_ALPHA

# Location of the Libraries folder from the STM32F4 Standard Peripheral Library
LIBS_DIR = $(TOPLEVEL)/libraries
MBED_DIR = $(LIBS_DIR)/mbed
CMSIS_DIR = $(MBED_DIR)/targets/cmsis/TARGET_STM/TARGET_STM32F4
BOARD_DIR = $(CMSIS_DIR)/$(BOARD)
RTOS_DIR = $(MBED_DIR)/rtos
export LIBTFM_DIR = $(LIBS_DIR)/thirdparty/libtfm
export LIBHAL_DIR = $(LIBS_DIR)/libhal
export LIBCLI_DIR = $(LIBS_DIR)/libcli

export LIBS = $(MBED_DIR)/libstmf4.a $(RTOS_DIR)/librtos.a

# linker script
export LDSCRIPT = $(BOARD_DIR)/TOOLCHAIN_GCC_ARM/STM32F429BI.ld
export BOOTLOADER_LDSCRIPT = $(BOARD_DIR)/TOOLCHAIN_GCC_ARM/STM32F429BI_bootloader.ld

# board-specific objects, to link into every project
BOARD_OBJS = \
	$(TOPLEVEL)/stm-init.o \
	$(TOPLEVEL)/stm-fmc.o \
	$(TOPLEVEL)/stm-uart.o \
	$(TOPLEVEL)/syscalls.o \
	$(BOARD_DIR)/TOOLCHAIN_GCC_ARM/startup_stm32f429xx.o \
	$(BOARD_DIR)/system_stm32f4xx.o \
	$(BOARD_DIR)/stm32f4xx_hal_msp.o \
	$(BOARD_DIR)/stm32f4xx_it.o
ifeq (${BOARD},TARGET_CRYPTECH_ALPHA)
BOARD_OBJS += \
	$(TOPLEVEL)/stm-rtc.o \
	$(TOPLEVEL)/spiflash_n25q128.o \
	$(TOPLEVEL)/stm-fpgacfg.o \
	$(TOPLEVEL)/stm-keystore.o \
	$(TOPLEVEL)/stm-sdram.o \
	$(TOPLEVEL)/stm-flash.o
endif
export BOARD_OBJS

# cross-building tools
PREFIX=arm-none-eabi-
export CC=$(PREFIX)gcc
export AS=$(PREFIX)as
export AR=$(PREFIX)ar
export OBJCOPY=$(PREFIX)objcopy
export OBJDUMP=$(PREFIX)objdump
export SIZE=$(PREFIX)size

# whew, that's a lot of cflags
CFLAGS  = -ggdb -O2 -Wall -Warray-bounds #-Wextra
CFLAGS += -mcpu=cortex-m4 -mthumb -mlittle-endian -mthumb-interwork
CFLAGS += -mfloat-abi=hard -mfpu=fpv4-sp-d16
CFLAGS += -DUSE_STDPERIPH_DRIVER -DSTM32F4XX -DSTM32F429xx
CFLAGS += -D__CORTEX_M4 -DTARGET_STM -DTARGET_STM32F4 -DTARGET_STM32F429ZI -DTOOLCHAIN_GCC -D__FPU_PRESENT=1 -D$(BOARD)
CFLAGS += -ffunction-sections -fdata-sections -Wl,--gc-sections
CFLAGS += -std=c99
CFLAGS += -I $(TOPLEVEL)
CFLAGS += -I $(MBED_DIR)/api
CFLAGS += -I $(MBED_DIR)/rtos/rtos
CFLAGS += -I $(MBED_DIR)/rtos/rtx/TARGET_CORTEX_M
CFLAGS += -I $(MBED_DIR)/targets/cmsis
CFLAGS += -I $(MBED_DIR)/targets/cmsis/TARGET_STM/TARGET_STM32F4
CFLAGS += -I $(MBED_DIR)/targets/cmsis/TARGET_STM/TARGET_STM32F4/$(BOARD)
CFLAGS += -I $(MBED_DIR)/targets/hal/TARGET_STM/TARGET_STM32F4
CFLAGS += -I $(MBED_DIR)/targets/hal/TARGET_STM/TARGET_STM32F4/$(BOARD)
export CFLAGS

%.o : %.c
	$(CC) $(CFLAGS) -c -o $@ $<

%.o : %.S
	$(CC) $(CFLAGS) -c -o $@ $<

all: board-test cli-test libhal-test hsm

init:
	git submodule update --init --recursive --remote

$(MBED_DIR)/libstmf4.a:
	$(MAKE) -C $(MBED_DIR)

board-test: $(BOARD_OBJS) $(LIBS)
	$(MAKE) -C projects/board-test

cli-test: $(BOARD_OBJS) $(LIBS) $(LIBCLI_DIR)/libcli.a
	$(MAKE) -C projects/cli-test

$(RTOS_DIR)/librtos.a:
	$(MAKE) -C $(RTOS_DIR)

rtos-test: $(RTOS_OBJS) $(LIBS)
	$(MAKE) -C projects/rtos-test

$(LIBTFM_DIR)/libtfm.a:
	$(MAKE) -C $(LIBTFM_DIR) PREFIX=$(PREFIX)

$(LIBHAL_DIR)/libhal.a: $(LIBTFM_DIR)/libtfm.a
	$(MAKE) -C $(LIBHAL_DIR) IO_BUS=fmc RPC_SERVER=yes RPC_TRANSPORT=serial KS=volatile libhal.a

$(LIBCLI_DIR)/libcli.a:
	$(MAKE) -C $(LIBCLI_DIR)

libhal-test: $(BOARD_OBJS) $(LIBS) $(LIBHAL_DIR)/libhal.a
	$(MAKE) -C projects/libhal-test

hsm: $(BOARD_OBJS) $(LIBS) $(LIBHAL_DIR)/libhal.a
	$(MAKE) -C projects/hsm

bootloader: $(BOARD_OBJS) $(LIBS)
	$(MAKE) -C projects/bootloader

# don't automatically delete objects, to avoid a lot of unnecessary rebuilding
.SECONDARY: $(BOARD_OBJS)

.PHONY: board-test rtos-test libhal-test cli-test

clean:
	rm -f $(BOARD_OBJS)
	$(MAKE) -C projects/board-test clean
	$(MAKE) -C projects/cli-test clean
	$(MAKE) -C projects/rtos-test clean
	$(MAKE) -C projects/libhal-test clean
	$(MAKE) -C projects/hsm clean

distclean: clean
	$(MAKE) -C $(MBED_DIR) clean
	$(MAKE) -C $(RTOS_DIR) clean
	$(MAKE) -C $(LIBHAL_DIR) clean
	$(MAKE) -C $(LIBTFM_DIR) clean