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CROSS_PREFIX=or1k-elf-
dirs-y += src/generic src/ar100 lib/ar100
CFLAGS += -O3
CFLAGS += -fno-builtin
CFLAGS += -fno-pie
CFLAGS += -ffreestanding
CFLAGS += -msfimm -mshftimm -msoft-div -msoft-mul
CFLAGS += -Ilib/ar100
CFLAGS_kutter.elf := $(CFLAGS) -T src/ar100/ar100.ld
CFLAGS_kutter.elf += -Wl,--gc-sections -static
CFLAGS_kutter.elf += -Wl,--no-dynamic-linker
SFLAGS = -nostdinc -MMD
SFLAGS += -Ilib/ar100
# Add source files
src-y += ar100/main.c ar100/gpio.c ar100/serial.c
src-y += ar100/util.c ar100/timer.c
src-y += generic/crc16_ccitt.c generic/timer_irq.c
OBJS_kutter.elf += $(OUT)lib/ar100/start.o
OBJS_kutter.elf += $(OUT)lib/ar100/runtime.o
# Build the AR100 binary
target-y += $(OUT)ar100.bin
$(OUT)lib/ar100/start.o:
@echo " Compiling $@"
$(Q)$(CC) $(SFLAGS) -c $(PWD)/lib/ar100/start.S -o $@
$(OUT)lib/ar100/runtime.o:
@echo " Compiling $@"
$(Q)$(CC) $(SFLAGS) -c $(PWD)/lib/ar100/runtime.S -o $@
$(OUT)ar100.bin: $(OUT)kutter.elf
@echo " Object copy $@"
$(OBJCOPY) -O binary -S --reverse-bytes 4 $(OUT)kutter.elf $@
truncate -s %8 $@
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