TARGET := riscv64gc-unknown-none-elf
MODE := release
KERNEL_ELF := target/$(TARGET)/$(MODE)/cg-tg-rcore-tutorial-ch4
KERNEL_BIN := $(KERNEL_ELF).bin
DISASM_TMP := target/$(TARGET)/$(MODE)/asm
FS_IMG := user/target/$(TARGET)/$(MODE)/fs.img
APPS := user/src/bin/*
OFFLINE :=

BOARD := qemu
SBI ?= rustsbi
BOOTLOADER := bootloader/$(SBI)-$(BOARD).bin

ifeq ($(MODE), release)
	MODE_ARG := --release
endif

KERNEL_ENTRY_PA := 0x80200000

OBJDUMP := rust-objdump --arch-name=riscv64
OBJCOPY := rust-objcopy --binary-architecture=riscv64

CHAPTER ?= 4
TEST ?= $(CHAPTER)
BASE ?= 1
DISASM ?= -x

build: env $(KERNEL_BIN) fs-img

env:
ifeq ($(OFFLINE),)
	(rustup target list | grep "riscv64gc-unknown-none-elf (installed)") || rustup target add $(TARGET)
	cargo install cargo-binutils --locked
	rustup component add rust-src
	rustup component add llvm-tools-preview
endif

$(KERNEL_BIN): kernel
	@$(OBJCOPY) $(KERNEL_ELF) --strip-all -O binary $@

fs-img: $(APPS)
	@make -C user build TEST=$(TEST) CHAPTER=$(CHAPTER) BASE=$(BASE)
	@rm -f $(FS_IMG)
	@cd easy-fs-fuse && cargo run --release -- -s ../user/build/app/ -t ../user/target/riscv64gc-unknown-none-elf/release/

kernel:
	@make -C user build TEST=$(TEST) CHAPTER=$(CHAPTER) BASE=$(BASE)
	@echo Platform: $(BOARD)
	@cargo build $(MODE_ARG)

run: build run-inner

run-inner:
	@qemu-system-riscv64 \
		-machine virt \
		-nographic \
		-bios $(BOOTLOADER) \
		-device loader,file=$(KERNEL_BIN),addr=$(KERNEL_ENTRY_PA) \
		-drive file=$(FS_IMG),if=none,format=raw,id=x0 \
		-device virtio-blk-device,drive=x0,bus=virtio-mmio-bus.0

check:
	@cargo check

fmt:
	@cargo fmt

clean:
	@cargo clean

.PHONY: build env fs-img kernel run run-inner check fmt clean
