Makefile

# https://seisman.github.io/how-to-write-makefile/introduction.html

# Building
TARGET := riscv64gc-unknown-none-elf
MODE := release
KERNEL_ELF := target/$(TARGET)/$(MODE)/ros
KERNEL_BIN := $(KERNEL_ELF).bin
DISASM_TMP := target/$(TARGET)/$(MODE)/asm

# BOARD
BOOTLOADER := bootloader/rustsbi-qemu.bin

# KERNEL ENTRY
KERNEL_ENTRY_PA := 0x80200000

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

# Disassembly
DISASM ?= -x

build: env $(KERNEL_BIN)

env:
	(rustup target list | grep "riscv64gc-unknown-none-elf (installed)") || rustup target add $(TARGET)
	cargo install cargo-binutils --vers ~0.2
	rustup component add rust-src
	rustup component add llvm-tools-preview

kernel:
	@cargo build --release
	
disasm: kernel
	@$(OBJDUMP) $(DISASM) $(KERNEL_ELF) | less

disasm-vim: kernel
	@$(OBJDUMP) $(DISASM) $(KERNEL_ELF) > $(DISASM_TMP)
	@vim $(DISASM_TMP)
	@rm $(DISASM_TMP)

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

run: build
	@qemu-system-riscv64 \
		-smp 4 \
		-machine virt \
		-nographic \
		-bios $(BOOTLOADER) \
		-device loader,file=$(KERNEL_BIN),addr=$(KERNEL_ENTRY_PA)

debug: build
	@qemu-system-riscv64 \
		-s -S \
		-smp 4 \
		-machine virt \
		-nographic \
		-bios $(BOOTLOADER) \
		-device loader,file=$(KERNEL_BIN),addr=$(KERNEL_ENTRY_PA)

clean:
	@cargo clean


.PHONY: build env kernel clean disasm disasm-vim run-inner