70 lines
1.8 KiB
Makefile
70 lines
1.8 KiB
Makefile
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CROSS_COMPILE = arm-none-eabi-
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# Use our cross-compile prefix to set up our basic cross compile environment.
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CC = $(CROSS_COMPILE)gcc
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LD = $(CROSS_COMPILE)ld
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OBJCOPY = $(CROSS_COMPILE)objcopy
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CFLAGS = \
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-mtune=arm7tdmi \
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-mlittle-endian \
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-fno-stack-protector \
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-fno-common \
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-fno-builtin \
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-ffreestanding \
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-std=gnu99 \
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-Werror \
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-Wall \
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-Wno-error=unused-function \
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-fomit-frame-pointer \
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-g \
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-Os \
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LDFLAGS =
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all: intermezzo.bin
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# The new address of the Intermezzo after copy
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INTERMEZZO_RELOCATED_ADDRESS := 0x4000F000
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# The address to which Intermezzo is to be loaded by the payload launcher.
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INTERMEZZO_ADDRESS := 0x40010000
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# The address we want the final payload to be located at.
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RELOCATION_TARGET := 0x40010000
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# The addrss and length of the data loaded by f-g.
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PAYLOAD_START_ADDR := 0x40010E40
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STACK_SPRAY_START := 0x40014E40
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STACK_SPRAY_END := 0x40017000
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BEFORE_SPRAY_LENGTH := $(shell echo $$(( $(STACK_SPRAY_START) - $(PAYLOAD_START_ADDR) )))
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AFTER_SPRAY_LENGTH := 0x30000
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ENTRY_POINT_ADDRESS := 0x40010000
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# Provide the definitions used in the intermezzo stub.
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DEFINES := \
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-DINTERMEZZO_RELOCATED_ADDRESS=$(INTERMEZZO_RELOCATED_ADDRESS) \
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-DRELOCATION_TARGET=$(RELOCATION_TARGET) \
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-DPAYLOAD_START_ADDR=$(PAYLOAD_START_ADDR) \
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-DSTACK_SPRAY_START=$(STACK_SPRAY_START) \
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-DSTACK_SPRAY_END=$(STACK_SPRAY_END) \
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-DBEFORE_SPRAY_LENGTH=$(BEFORE_SPRAY_LENGTH) \
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-DAFTER_SPRAY_LENGTH=$(AFTER_SPRAY_LENGTH) \
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-DENTRY_POINT_ADDRESS=$(ENTRY_POINT_ADDRESS)
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intermezzo.elf: intermezzo.o
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$(LD) -T intermezzo.lds --defsym LOAD_ADDR=$(INTERMEZZO_ADDRESS) $(LDFLAGS) $^ -o $@
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intermezzo.o: intermezzo.S
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$(CC) $(CFLAGS32) $(DEFINES) $< -c -o $@
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%.bin: %.elf
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$(OBJCOPY) -v -O binary $< $@
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clean:
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rm -f *.o *.elf *.bin
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.PHONY: all clean
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