ifeq ($(strip $(DEVKITARM)),)
$(error "Please set DEVKITARM in your environment. export DEVKITARM=<path to>devkitARM")
endif

include $(DEVKITARM)/base_rules

################################################################################

IPL_LOAD_ADDR := 0x40008000

################################################################################

TARGET := aio_rcm
BUILDDIR := build
OUTPUTDIR := output
SOURCEDIR = bootloader
BDKDIR := bdk
BDKINC := -I./$(BDKDIR)
VPATH = $(dir ./$(SOURCEDIR)/) $(dir $(wildcard ./$(SOURCEDIR)/*/)) $(dir $(wildcard ./$(SOURCEDIR)/*/*/))
VPATH += $(dir $(wildcard ./$(BDKDIR)/)) $(dir $(wildcard ./$(BDKDIR)/*/)) $(dir $(wildcard ./$(BDKDIR)/*/*/))

# Main and graphics.
OBJS = $(addprefix $(BUILDDIR)/$(TARGET)/, \
	start.o exception_handlers.o \
	main.o heap.o \
	gfx.o \
)

# Hardware.
OBJS += $(addprefix $(BUILDDIR)/$(TARGET)/, \
	bpmp.o ccplex.o clock.o di.o gpio.o i2c.o irq.o mc.o sdram.o \
	pinmux.o pmc.o se.o smmu.o tsec.o uart.o \
	fuse.o kfuse.o minerva.o \
	sdmmc.o sdmmc_driver.o nx_sd.o \
	bq24193.o max17050.o max7762x.o max77620-rtc.o \
	hw_init.o \
)

# Utilities.
OBJS += $(addprefix $(BUILDDIR)/$(TARGET)/, \
	btn.o dirlist.o ianos.o util.o \
	config.o ini.o \
)

# Libraries.
OBJS += $(addprefix $(BUILDDIR)/$(TARGET)/, \
	lz.o blz.o \
	diskio.o ff.o ffunicode.o ffsystem.o \
	elfload.o elfreloc_arm.o \
)

GFX_INC   := '"../$(SOURCEDIR)/gfx/gfx.h"'
FFCFG_INC := '"../$(SOURCEDIR)/libs/fatfs/ffconf.h"'

################################################################################

CUSTOMDEFINES := -DIPL_LOAD_ADDR=$(IPL_LOAD_ADDR)
CUSTOMDEFINES += -DGFX_INC=$(GFX_INC) -DFFCFG_INC=$(FFCFG_INC)

# 0: UART_A, 1: UART_B.
#CUSTOMDEFINES += -DDEBUG_UART_PORT=0

#CUSTOMDEFINES += -DDEBUG

ARCH := -march=armv4t -mtune=arm7tdmi -mthumb -mthumb-interwork
CFLAGS = $(ARCH) -O2 -g -nostdlib -ffunction-sections -fdata-sections -fomit-frame-pointer -fno-inline -std=gnu11 -Wall $(CUSTOMDEFINES)
LDFLAGS = $(ARCH) -nostartfiles -lgcc -Wl,--nmagic,--gc-sections -Xlinker --defsym=IPL_LOAD_ADDR=$(IPL_LOAD_ADDR)

MODULEDIRS := $(wildcard modules/*)
NYXDIR := $(wildcard nyx)

################################################################################

.PHONY: all clean

all: $(TARGET).bin
	@printf ICTC49 >> $(OUTPUTDIR)/$(TARGET).bin
	@echo "--------------------------------------"
	@echo -n "Payload size: "
	$(eval BIN_SIZE = $(shell wc -c < $(OUTPUTDIR)/$(TARGET).bin))
	@echo $(BIN_SIZE)" Bytes"
	@echo "Payload Max:  126296 Bytes"
	@if [ ${BIN_SIZE} -gt 126296 ]; then echo "\e[1;33mPayload size exceeds limit!\e[0m"; fi
	@echo "--------------------------------------"

clean:
	@rm -rf $(OBJS)
	@rm -rf $(BUILDDIR)
	@rm -rf $(OUTPUTDIR)

$(TARGET).bin: $(BUILDDIR)/$(TARGET)/$(TARGET).elf
	$(OBJCOPY) -S -O binary $< $(OUTPUTDIR)/$@

$(BUILDDIR)/$(TARGET)/$(TARGET).elf: $(OBJS)
	@$(CC) $(LDFLAGS) -T $(SOURCEDIR)/link.ld $^ -o $@
	@echo "hekate was built with the following flags:\nCFLAGS:  "$(CFLAGS)"\nLDFLAGS: "$(LDFLAGS)

$(BUILDDIR)/$(TARGET)/%.o: %.c
	@echo Building $@
	@$(CC) $(CFLAGS) $(BDKINC) -c $< -o $@

$(BUILDDIR)/$(TARGET)/%.o: %.S
	@echo Building $@
	@$(CC) $(CFLAGS) -c $< -o $@

$(OBJS): $(BUILDDIR)/$(TARGET)

$(BUILDDIR)/$(TARGET):
	@mkdir -p "$(BUILDDIR)"
	@mkdir -p "$(BUILDDIR)/$(TARGET)"
	@mkdir -p "$(OUTPUTDIR)"