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|
# Handmade firmware Makefile
# Compiler and tools
CC = sdcc
AS = sdas8051
# Compiler flags
CFLAGS = -mmcs51 --model-small --opt-code-speed --allow-unsafe-read
CFLAGS += --std-c99
CFLAGS += -I$(SRC_DIR)
CFLAGS += --no-xinit-opt
CFLAGS += -DGIT_VERSION='"$(shell git rev-parse --short=8 HEAD)-$(if $(shell git status --porcelain),DIRTY,CLEAN)"'
# Memory model settings
LDFLAGS = --code-loc 0x0000 --code-size 0x10000
LDFLAGS += --xram-loc 0x0000 --xram-size 0x10000
LDFLAGS += --iram-size 0x100
# Directories
SRC_DIR = src
BUILD_DIR = build
OBJ_DIR = $(BUILD_DIR)/obj
# Source files
CRT0_SRC = $(SRC_DIR)/crt0.s
MAIN_SRC = $(SRC_DIR)/main.c
# Object files
CRT0_OBJ = $(OBJ_DIR)/crt0.rel
MAIN_OBJ = $(OBJ_DIR)/main.rel
OBJS = $(CRT0_OBJ) $(MAIN_OBJ)
# Output files
TARGET = $(BUILD_DIR)/firmware
HEX = $(TARGET).ihx
BIN = $(TARGET).bin
.PHONY: all clean flash wrapped uflash nflash
all: $(BIN)
@echo "Built: $(BIN)"
@ls -la $(BIN)
# Create directories
$(OBJ_DIR):
mkdir -p $(OBJ_DIR)
$(BUILD_DIR):
mkdir -p $(BUILD_DIR)
# Assemble startup code
$(CRT0_OBJ): $(CRT0_SRC) | $(OBJ_DIR)
$(AS) -l -o -s $<
mv $(SRC_DIR)/crt0.rel $(CRT0_OBJ)
-mv $(SRC_DIR)/crt0.lst $(OBJ_DIR)/ 2>/dev/null || true
-mv $(SRC_DIR)/crt0.sym $(OBJ_DIR)/ 2>/dev/null || true
# Compile main source. Header deps generated as a side effect via `sdcc -MM`
# (one extra preprocessor pass; SDCC has no -MMD/-MD).
$(MAIN_OBJ): $(MAIN_SRC) | $(OBJ_DIR)
$(CC) $(CFLAGS) -c $< -o $@
@$(CC) $(CFLAGS) -MM $< 2>/dev/null | sed 's|^[^:]*:|$@:|' > $(OBJ_DIR)/main.d
-include $(OBJ_DIR)/main.d
# Link object files to Intel HEX
$(HEX): $(OBJS) | $(BUILD_DIR)
$(CC) $(CFLAGS) $(LDFLAGS) $(OBJS) -o $@
# Convert Intel HEX to binary
$(BIN): $(HEX)
@echo "Converting HEX to BIN..."
@if command -v objcopy > /dev/null 2>&1; then \
objcopy -I ihex -O binary $< $@; \
elif command -v sdobjcopy > /dev/null 2>&1; then \
sdobjcopy -I ihex -O binary $< $@; \
else \
python3 -c "import sys; \
data = bytearray(0x10000); \
for line in open('$<'): \
if line[0] != ':': continue; \
n = int(line[1:3], 16); \
addr = int(line[3:7], 16); \
t = int(line[7:9], 16); \
if t == 0: \
for i in range(n): \
data[addr+i] = int(line[9+i*2:11+i*2], 16); \
open('$@', 'wb').write(bytes(data).rstrip(b'\x00'))"; \
fi
# Add ASM2464 firmware wrapper (body_len + body + magic + checksum + crc)
$(BUILD_DIR)/firmware_wrapped.bin: $(BIN)
@echo "Wrapping firmware with ASM2464 header..."
@python3 -c "\
import zlib; \
body = open('$<', 'rb').read(); \
body_len = len(body).to_bytes(4, 'little'); \
checksum = bytes([sum(body) & 0xFF]); \
crc = zlib.crc32(body).to_bytes(4, 'little'); \
magic = bytes([0xA5]); \
open('$@', 'wb').write(body_len + body + magic + checksum + crc)"
@echo "Built: $@"
@ls -la $@
wrapped: $(BUILD_DIR)/firmware_wrapped.bin
uflash: $(BUILD_DIR)/firmware_wrapped.bin
@python3 e4_flash.py $<
nflash: $(BUILD_DIR)/firmware_wrapped.bin
@echo "Resetting to bootloader..."
@python3 ../ftdi_debug.py -bn
@echo "Flashing firmware to device..."
@python3 ../flash.py $<
@python3 ../ftdi_debug.py -rn
# Flash to device
flash: $(BUILD_DIR)/firmware_wrapped.bin
@echo "Resetting to bootloader..."
@python3 ../ftdi_debug.py -bn
@echo "Flashing firmware to device..."
@python3 ../flash.py $<
@echo "Resetting device..."
@python3 ../ftdi_debug.py -rt 2
# Clean build artifacts
clean:
rm -rf $(BUILD_DIR)
rm -f $(SRC_DIR)/*.asm $(SRC_DIR)/*.lst $(SRC_DIR)/*.sym
rm -f $(SRC_DIR)/*.rel $(SRC_DIR)/*.rst $(SRC_DIR)/*.map
rm -f *.lk *.mem *.map
|
