# source directories
SRCDIR_MP = vendor/micropython
SRCDIR_FW = micropython

# target directory
PROJECT ?= boardloader
BUILD ?= micropython/$(PROJECT)/build

# include py core make definitions
include $(SRCDIR_MP)/py/mkenv.mk

# sources
# =====================================

BUILD_MP = $(BUILD)/$(SRCDIR_MP)
BUILD_FW = $(BUILD)/$(SRCDIR_FW)
BUILD_HDR = $(BUILD)/genhdr

CFLAGS_MOD += \
	-I$(SRCDIR_FW)/extmod/modtrezorcrypto/trezor-crypto \
	-I$(SRCDIR_FW)/extmod/modtrezorcrypto/trezor-crypto/ed25519-donna \
	-DAES_128 \
	-DAES_192 \
	-DUSE_KECCAK=1 \
	-DED25519_NO_PRECOMP=1 \
	-Wno-sequence-point

# OBJ vendor/micropython
OBJ_MICROPYTHON += $(addprefix $(BUILD_MP)/,\
	lib/libc/string0.o \
	stmhal/startup_stm32.o \
	)

# OBJ vendor/micropython
OBJ_STMHAL += $(addprefix $(BUILD_MP)/,\
	stmhal/hal/f4/src/stm32f4xx_hal_adc_ex.o \
	stmhal/hal/f4/src/stm32f4xx_hal_adc.o \
	stmhal/hal/f4/src/stm32f4xx_hal_can.o \
	stmhal/hal/f4/src/stm32f4xx_hal_cortex.o \
	stmhal/hal/f4/src/stm32f4xx_hal_dac_ex.o \
	stmhal/hal/f4/src/stm32f4xx_hal_dac.o \
	stmhal/hal/f4/src/stm32f4xx_hal_dma.o \
	stmhal/hal/f4/src/stm32f4xx_hal_flash_ex.o \
	stmhal/hal/f4/src/stm32f4xx_hal_flash.o \
	stmhal/hal/f4/src/stm32f4xx_hal_gpio.o \
	stmhal/hal/f4/src/stm32f4xx_hal_i2c.o \
	stmhal/hal/f4/src/stm32f4xx_hal_pcd_ex.o \
	stmhal/hal/f4/src/stm32f4xx_hal_pcd.o \
	stmhal/hal/f4/src/stm32f4xx_hal_pwr_ex.o \
	stmhal/hal/f4/src/stm32f4xx_hal_pwr.o \
	stmhal/hal/f4/src/stm32f4xx_hal_rcc_ex.o \
	stmhal/hal/f4/src/stm32f4xx_hal_rcc.o \
	stmhal/hal/f4/src/stm32f4xx_hal_rng.o \
	stmhal/hal/f4/src/stm32f4xx_hal_rtc_ex.o \
	stmhal/hal/f4/src/stm32f4xx_hal_rtc.o \
	stmhal/hal/f4/src/stm32f4xx_hal_sd.o \
	stmhal/hal/f4/src/stm32f4xx_hal_spi.o \
	stmhal/hal/f4/src/stm32f4xx_hal_tim_ex.o \
	stmhal/hal/f4/src/stm32f4xx_hal_tim.o \
	stmhal/hal/f4/src/stm32f4xx_hal_uart.o \
	stmhal/hal/f4/src/stm32f4xx_hal.o \
	stmhal/hal/f4/src/stm32f4xx_ll_sdmmc.o \
	stmhal/hal/f4/src/stm32f4xx_ll_usb.o \
	)

# OBJ micropython/
OBJ_BOARDLOADER += $(addprefix $(BUILD_FW)/, \
	boardloader/main.o \
	extmod/modtrezorcrypto/trezor-crypto/ed25519-donna/ed25519.o \
	extmod/modtrezorcrypto/trezor-crypto/blake2s.o \
	extmod/modtrezorcrypto/trezor-crypto/sha2.o \
	extmod/modtrezorui/display.o \
	extmod/modtrezorui/font_bitmap.o \
	)

OBJ_TREZORHAL += $(addprefix $(BUILD_FW)/, \
	trezorhal/common.o \
	trezorhal/image.o \
	trezorhal/flash.o \
	trezorhal/sdcard.o \
	trezorhal/stm32_it.o \
	trezorhal/stm32_system.o \
	trezorhal/hal/stm32f4xx_hal_sram.o \
	trezorhal/hal/stm32f4xx_ll_fsmc.o \
	)

OBJ = $(OBJ_MICROPYTHON) $(OBJ_STMHAL) $(OBJ_TREZORHAL)
OBJ += $(OBJ_BOARDLOADER)

# comp flags
# =====================================

CROSS_COMPILE = arm-none-eabi-

INC += -I.
INC += -I$(SRCDIR_FW)/$(PROJECT)
INC += -I$(SRCDIR_FW)/extmod/modtrezorui
INC += -I$(SRCDIR_FW)/trezorhal
INC += -I$(SRCDIR_FW)/trezorhal/hal
INC += -I$(SRCDIR_MP)
INC += -I$(SRCDIR_MP)/stmhal
INC += -I$(SRCDIR_MP)/stmhal/cmsis
INC += -I$(SRCDIR_MP)/stmhal/hal/f4/inc
INC += -I$(SRCDIR_MP)/lib/cmsis/inc
INC += -I$(BUILD)

ifeq ($(DEBUG), 1)
CFLAGS += -Os -ggdb
else
CFLAGS += -Os -DNDEBUG
endif

CFLAGS += $(INC) $(CFLAGS_MOD) $(CFLAGS_EXTRA)
CFLAGS += -std=gnu99 -nostdlib -Wall -Werror -Wdouble-promotion -Wpointer-arith
CFLAGS += -mthumb -mtune=cortex-m4 -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard -fsingle-precision-constant
CFLAGS += -DSTM32F405xx -DMCU_SERIES_F4
CFLAGS += -DSTM32_HAL_H='<stm32f4xx_hal.h>'
CFLAGS += -DTREZOR_STM32

LIBS = $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)

LDFLAGS = -nostdlib -T $(SRCDIR_FW)/$(PROJECT)/memory.ld -Map=$@.map --cref

# remove uncalled code from the final image
CFLAGS += -fdata-sections -ffunction-sections
LDFLAGS += --gc-sections

# comp rules
# =====================================

all: $(BUILD)/$(PROJECT).bin

$(BUILD)/$(PROJECT).elf: $(OBJ)
	$(ECHO) "LINK $@"
	$(Q)$(LD) $(LDFLAGS) -o $@ $^ $(LIBS)
	$(Q)$(SIZE) $@

$(BUILD)/$(PROJECT).bin: $(BUILD)/$(PROJECT).elf
	$(Q)$(OBJCOPY) -O binary -j .header -j .flash -j .data $^ $(BUILD)/$(PROJECT).bin

$(BUILD)/%.o: %.S
	$(ECHO) "CC $<"
	$(Q)$(CC) $(CFLAGS) -c -o $@ $<

$(BUILD)/%.o: %.s
	$(ECHO) "AS $<"
	$(Q)$(AS) -o $@ $<

$(BUILD)/%.o: %.c
	$(ECHO) "CC $<"
	$(Q)$(CC) $(CFLAGS) -c -MD -o $@ $<

OBJ_DIRS = $(sort $(dir $(OBJ)))
$(OBJ): | $(OBJ_DIRS)
$(OBJ_DIRS) $(BUILD_HDR):
	$(MKDIR) -p $@

$(OBJ): | $(BUILD_HDR)/qstrdefs.generated.h

$(BUILD_HDR)/qstrdefs.generated.h: | $(BUILD_HDR)
	touch $(BUILD_HDR)/qstrdefs.generated.h

clean:
	$(RM) -rf $(BUILD)

.PHONY: all clean