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# Generic Makefile fragment for Blue Pill devices and LibOpenCM3
#
# Parameters:
#
# STM32LIB path to root of the stm32lib
# OPENCM3_DIR path to root of libopencm3
# BINARY binary to build (without extension)
# OBJS list of object files
# LIB_OBJS list of library object files
# WITH_BOOT_LOADER define if code origin should be shifted by 8K for boot loader
# WITH_DFU_FLASH flashing uses dfu-util
# WITH_SERIAL_FLASH flashing uses the built-in serial boot-loader
# MAX_SIZE complain if the built firmware exceeds this size
#
vpath %.c $(STM32LIB)/lib
OBJS += $(LIB_OBJS)
DEVICE?=stm32f103x8
.PHONY: all
all:: $(BINARY).elf
.PHONY: flash
flash: $(BINARY).flash
ifneq ($(V),1)
Q := @
NULL := 2>/dev/null
endif
include $(OPENCM3_DIR)/mk/genlink-config.mk
ifdef WITH_BOOT_LOADER
# We want to generate a linked script for a different ROM start address
UCW_LDSCRIPT=bootloader-$(DEVICE).ld
bootloader-$(DEVICE).ld: generated.$(DEVICE).ld
@printf " GENLNK2 $@\n"
$(Q)sed '/^ rom /s/ORIGIN = 0x08000000/ORIGIN = 0x08002000/' <$< >$@
else
UCW_LDSCRIPT=$(LDSCRIPT)
endif
PREFIX ?= arm-none-eabi
CC := $(PREFIX)-gcc
CXX := $(PREFIX)-g++
LD := $(PREFIX)-gcc
AR := $(PREFIX)-ar
AS := $(PREFIX)-as
OBJCOPY := $(PREFIX)-objcopy
OBJDUMP := $(PREFIX)-objdump
GDB := $(PREFIX)-gdb
OPT := -Os
DEBUG := -ggdb3
CSTD ?= -std=gnu99
TGT_CFLAGS += $(OPT) $(CSTD) $(DEBUG)
TGT_CFLAGS += $(ARCH_FLAGS)
TGT_CFLAGS += -Wall -Wextra -Wshadow -Wimplicit-function-declaration
TGT_CFLAGS += -Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes -Wno-parentheses
TGT_CFLAGS += -fno-common -ffunction-sections -fdata-sections
TGT_CFLAGS += -I. -I$(STM32LIB)/lib
TGT_CPPFLAGS += -MD
TGT_LDFLAGS += --static -nostartfiles
TGT_LDFLAGS += -T$(UCW_LDSCRIPT)
TGT_LDFLAGS += $(ARCH_FLAGS) $(DEBUG)
TGT_LDFLAGS += -Wl,-Map=$(*).map -Wl,--cref
TGT_LDFLAGS += -Wl,--gc-sections
ifeq ($(V),99)
TGT_LDFLAGS += -Wl,--print-gc-sections
endif
LDLIBS += -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group
include $(OPENCM3_DIR)/mk/genlink-rules.mk
%.bin: %.elf
@printf " OBJCOPY $< -> $@\n"
$(Q)$(OBJCOPY) -Obinary $< $@
ifdef MAX_SIZE
$(Q)if [ $$(stat -c '%s' $@) -gt $(MAX_SIZE) ] ; then echo >&2 "Output too exceeds $(MAX_SIZE) bytes!" ; false ; fi
endif
%.elf: $(OBJS) $(UCW_LDSCRIPT)
@printf " LD $(*).elf\n"
$(Q)$(LD) $(TGT_LDFLAGS) $(LDFLAGS) $(OBJS) $(LDLIBS) -o $*.elf
%.o: %.c
@printf " CC $(*).c\n"
$(Q)$(CC) $(TGT_CFLAGS) $(CFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $@ -c $<
.PHONY: clean
clean:
@printf " CLEAN\n"
$(Q)rm -f *.elf *.bin *.dfu *.o *.d *.map $(LDSCRIPT) $(UCW_LDSCRIPT)
ifdef WITH_DFU_FLASH
HAVE_FLASH := 1
all:: $(BINARY).dfu
%.flash: %.dfu
@printf " FLASH $<\n"
$(Q)dfu-util $(DFU_ARGS) -D $<
# For the STM32duino-bootloader, we used:
#%.flash: %.bin
# @printf " FLASH $<\n"
# $(Q)dfu-util -a2 -D $(*).bin
endif
ifdef WITH_SERIAL_FLASH
HAVE_FLASH := 1
all:: $(BINARY).bin
BOOT_SERIAL ?= /dev/ttyUSB0
%.flash: %.bin
@printf " FLASH $<\n"
$(Q)stm32flash $(BOOT_SERIAL) -i 'dtr,-dtr' -w $< -g 0
.PHONY: reset
reset: all
$(Q)stm32flash $(BOOT_SERIAL) -i 'dtr,-dtr' -g 0
endif
ifdef WITH_MODBUS_FLASH
HAVE_FLASH := 1
all:: $(BINARY).dfu
%.flash: %.dfu
@printf " FLASH $<\n"
$(Q)$(STM32LIB)/tools/modbus-flash $(MODBUS_FLASH_ARGS) --flash $<
endif
ifndef HAVE_FLASH
all:: $(BINARY).bin
%.flash: %.bin
@printf " FLASH $<\n"
$(Q)st-flash write $(*).bin 0x8000000
.PHONY: reset
reset:
st-flash reset
endif
%.dfu: %.bin $(STM32LIB)/tools/dfu-sign
@printf " SIGN $< -> $@\n"
$(Q)$(STM32LIB)/tools/dfu-sign $< $@
$(STM32LIB)/tools/dfu-sign:
make -C $(STM32LIB)/tools
.SECONDEXPANSION:
.SECONDARY:
-include $(OBJS:.o=.d)