Olaf Rempel
125bdc1729
- current firmware need more space -> reduce bootloader size from 4K => 2K
- remove timer ISR
- remove interrupt vectors from linked binary
- make avr910 bootloader entry command more robust (old: 'S', new: { 0x1B, 'S'} )
- add compat bootloader entry command (rx: { 0x1B, 0xAA } -> tx: 'MKBL')
- do not leave bootloader after upgrading twiboot slave
- do not erase local flash when upgrading twiboot slave
- remove readable chipinfo output from twiboot slaves
55 lines
1.4 KiB
Makefile
55 lines
1.4 KiB
Makefile
PRG = fc_boot
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OBJ = main.o
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MCU_TARGET = atmega644p
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OPTIMIZE = -Os
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DEFS =
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LIBS =
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LDSCRIPT_SRC := /usr/lib/ldscripts/avr5.x
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LDSCRIPT_DST := ldscript-no-vectors.x
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# Override is only needed by avr-lib build system.
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override CFLAGS = -g -Wall $(OPTIMIZE) -mmcu=$(MCU_TARGET) $(DEFS)
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override LDFLAGS = -Wl,-Map,$(PRG).map,--section-start=.text=0xF800,-T$(LDSCRIPT_DST)
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CC = avr-gcc
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OBJCOPY = avr-objcopy
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OBJDUMP = avr-objdump
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SIZE = avr-size
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#LDSCRIPT_SRC := $(shell LANG=C $(CC) $(CFLAGS) -Wl,--verbose 2> /dev/null | awk '/^opened script file (.*)$$/{ print $$4 }')
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all: $(PRG).elf lst text
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$(SIZE) -x -A $(PRG).elf
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$(PRG).elf: $(OBJ) | $(LDSCRIPT_DST)
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$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS)
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$(LDSCRIPT_DST): $(LDSCRIPT_SRC)
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# remove all lines with *vectors* and insert DISCARD line above .text declaration
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sed -e '/.*vectors.*/d' -e 's/\(^[ \t]*\)\(.text[ \t]*\:\)$$/\1\/DISCARD\/ : { *(.vectors) }\n\1\2/g' $^ > $@
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# -diff -uNr $^ $@ > $@.diff
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clean:
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rm -rf *.o $(PRG).lst $(PRG).map $(PRG).elf $(PRG).hex $(PRG).bin $(LDSCRIPT_DST)
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lst: $(PRG).lst
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%.lst: %.elf
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$(OBJDUMP) -h -S $< > $@
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text: hex bin
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hex: $(PRG).hex
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bin: $(PRG).bin
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%.hex: %.elf
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$(OBJCOPY) -j .text -j .data -O ihex $< $@
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%.bin: %.elf
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$(OBJCOPY) -j .text -j .data -O binary $< $@
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install: text
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avrdude -c dragon_isp -P usb -p m644p -V -U flash:w:$(PRG).hex
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