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140 lines
3.6 KiB

CC := avr-gcc
LD := avr-ld
OBJCOPY := avr-objcopy
OBJDUMP := avr-objdump
SIZE := avr-size
TARGET = uartboot
SOURCE = $(wildcard *.c)
#CONFIG = ispprog
#CONFIG = flightctrl
#CONFIG = funkstuff88
#CONFIG = funkstuff168
#CONFIG = ispprog2
#CONFIG = avrnetio
CONFIG = funkbridge
AVRDUDE_PROG := -c avr910 -b 115200 -P /dev/ispprog
#AVRDUDE_PROG := -c dragon_isp -P usb
# ---------------------------------------------------------------------------
ifeq ($(CONFIG), ispprog)
MCU=atmega16
AVRDUDE_MCU=m16
# (7.3728MHz ext. crystal)
AVRDUDE_FUSES=lfuse:w:0xff:m hfuse:w:0xda:m
BOOTLOADER_START=0x3C00
endif
# -------------------------
ifeq ($(CONFIG), flightctrl)
MCU=atmega644p
AVRDUDE_MCU=m644p
# (20MHz ext. Crystal, 2.7V BOD)
AVRDUDE_FUSES=lfuse:w:0xff:m hfuse:w:0xdc:m efuse:w:0xfd:m
BOOTLOADER_START=0xF800
endif
# -------------------------
ifeq ($(CONFIG), funkstuff88)
MCU=atmega88
AVRDUDE_MCU=m88 -F
# (8MHz internal osc., 2.7V BOD)
AVRDUDE_FUSES=lfuse:w:0xe2:m hfuse:w:0xdd:m efuse:w:0x02:m
BOOTLOADER_START=0x1C00
endif
# -------------------------
ifeq ($(CONFIG), funkstuff168)
MCU=atmega168
AVRDUDE_MCU=m168 -F
# (ext. crystal 16MHz, 2.7V BOD)
AVRDUDE_FUSES=lfuse:w:0xff:m hfuse:w:0xdd:m efuse:w:0x02:m
BOOTLOADER_START=0x3C00
endif
# -------------------------
ifeq ($(CONFIG), ispprog2)
MCU=atmega328p
AVRDUDE_MCU=m328p -F
# (8MHz internal osc., 2.7V BOD)
AVRDUDE_FUSES=lfuse:w:0xe2:m hfuse:w:0xdc:m efuse:w:0x02:m
BOOTLOADER_START=0x7C00
endif
# -------------------------
ifeq ($(CONFIG), avrnetio)
MCU=atmega644
AVRDUDE_MCU=m644
# (16MHz ext. crystal, 2.7V BOD)
AVRDUDE_FUSES=lfuse:w:0xd7:m hfuse:w:0xdc:m efuse:w:0xfd:m
BOOTLOADER_START=0xF800
endif
# -------------------------
ifeq ($(CONFIG), funkbridge)
MCU=atmega328p
AVRDUDE_MCU=m328p -F
# (16MHz ext. crystal, 2.7V BOD)
AVRDUDE_FUSES=lfuse:w:0xff:m hfuse:w:0xdc:m efuse:w:0x02:m
BOOTLOADER_START=0x7C00
endif
# ---------------------------------------------------------------------------
CFLAGS = -pipe -g -Os -mmcu=$(MCU) -Wall
CFLAGS += -fdata-sections -ffunction-sections
CFLAGS += -Wa,-adhlns=$(*F).lst
CFLAGS += -DBOOTLOADER_START=$(BOOTLOADER_START) -DCONFIG_$(CONFIG)=1
LDFLAGS = -Wl,-Map,$(@:.elf=.map),--cref,--section-start=.text=$(BOOTLOADER_START)
LDFLAGS += -Wl,--relax,--gc-sections
LDSCRIPT := $(shell LANG=C $(CC) $(CFLAGS) -Wl,--verbose 2> /dev/null | awk '/^opened script file (.*)$$/{ print $$4 }')
LDSCRIPT_NOVECT := ldscript-no-vectors-$(notdir $(LDSCRIPT))
# ---------------------------------------------------------------------------
$(TARGET): $(TARGET).elf
@$(SIZE) -B -x --mcu=$(MCU) $<
$(TARGET).elf: $(SOURCE:.c=.o) | $(LDSCRIPT_NOVECT)
@echo " Linking file: $@"
@$(CC) $(CFLAGS) $(LDFLAGS) -Wl,-T$(LDSCRIPT_NOVECT) -o $@ $^ 2> /dev/null
@$(OBJDUMP) -h -S $@ > $(@:.elf=.lss)
@$(OBJCOPY) -j .text -j .data -O ihex $@ $(@:.elf=.hex)
@$(OBJCOPY) -j .text -j .data -O binary $@ $(@:.elf=.bin)
%.o: %.c $(MAKEFILE_LIST)
@echo " Building file: $<"
@$(CC) $(CFLAGS) -o $@ -c $<
# remove interrupt vector section from avr-libc linker script
# (remove all lines with *vectors* and insert DISCARD line above .text declaration)
$(LDSCRIPT_NOVECT): $(LDSCRIPT) $(MAKEFILE_LIST)
@echo " Creating: $@"
@sed -e '/.*vectors.*/d' -e 's/\(^[ \t]*\)\(.text[ \t]*\:\)$$/\1\/DISCARD\/ : { *(.vectors) }\n\1\2/g' $< > $@
# -@diff -uNr $< $@ > $@.diff
clean:
rm -rf $(SOURCE:.c=.o) $(SOURCE:.c=.lst) $(addprefix $(TARGET), .elf .map .lss .hex .bin) ldscript-no-vectors-*
install: $(TARGET).elf
avrdude $(AVRDUDE_PROG) -p $(AVRDUDE_MCU) -U flash:w:$(<:.elf=.hex)
fuses:
avrdude $(AVRDUDE_PROG) -p $(AVRDUDE_MCU) $(patsubst %,-U %, $(AVRDUDE_FUSES))