109 lines
2.3 KiB
Makefile
109 lines
2.3 KiB
Makefile
BUILD=./build
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# Default rule
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.PHONY: default
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default: all
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# Remove all build files
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.PHONY: clean
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clean:
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rm -drf $(BUILD)
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cd tetros; cargo clean
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# Make everything
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# (but don't run qemu)
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.PHONY: all
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all: img
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#
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# MARK: boot
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#
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# Compile tetros as library
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LIB_SRC = ./tetros/Cargo.toml ./tetros/Cargo.lock $(shell find ./tetros/src -type f)
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$(BUILD)/tetros.lib: $(LIB_SRC)
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@mkdir -p $(BUILD)
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cd tetros && \
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env RUSTFLAGS="-C soft-float" \
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cargo rustc \
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--manifest-path="./Cargo.toml" \
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-Z build-std=core,alloc \
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-Z build-std-features=compiler-builtins-mem \
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--target "./targets/x86-unknown-none.json" \
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--lib \
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--release \
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-- \
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--emit link="$(CURDIR)/$@"
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# Link tetros
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BIOS_LD = ./tetros/linkers/x86-unknown-none.ld
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$(BUILD)/tetros.elf: $(BUILD)/tetros.lib $(BIOS_LD)
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ld \
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-m elf_i386 \
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--gc-sections \
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-z max-page-size=0x1000 \
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-T "$(BIOS_LD)" \
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-o "$@" \
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"$<"
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objcopy --only-keep-debug "$@" "$@.sym"
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objcopy --strip-debug "$@"
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# Wrap tetros in three-stage BIOS loader
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# Parameters:
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# - BIOS_SRC: source directory of bios assembly
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# - STAGE3: path to linked stage 3 binary
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# - STAGE2_SECTOR: the index of the first sector of the stage 2 binary on the disk
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BIOS_SRC = ./bios
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STAGE2_SECTOR = 5
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STAGE3 = $(BUILD)/tetros.elf
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$(BUILD)/bios.bin: $(wildcard $(BIOS_SRC)/*.asm) $(STAGE3)
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@mkdir -p "$(BUILD)"
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nasm \
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-f bin \
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-D STAGE3=$(STAGE3) \
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-D STAGE2_SECTOR=$(STAGE2_SECTOR) \
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-o "$@" \
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-l "$@.lst" \
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-i "$(BIOS_SRC)" \
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"$(BIOS_SRC)/main.asm"
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# Extract full mbr (first 512 bytes)
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$(BUILD)/mbr.bin: $(BUILD)/bios.bin
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@mkdir -p "$(BUILD)"
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@echo ""
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dd if="$<" bs=512 count=1 of="$@"
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# Extract stage 2 (rest of file)
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$(BUILD)/stage2.bin: $(BUILD)/bios.bin
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@mkdir -p "$(BUILD)"
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@echo ""
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dd if="$<" bs=512 skip=1 of="$@"
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#
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# MARK: bundle
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#
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# Make full disk image
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.PHONY: img
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img: $(BUILD)/disk.img
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$(BUILD)/disk.img: $(BUILD)/mbr.bin $(BUILD)/stage2.bin
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@mkdir -p $(BUILD)
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@echo ""
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dd if=/dev/zero of=$@ bs=512 count=32
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dd if="$(BUILD)/mbr.bin" of=$@ conv=notrunc bs=512
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dd if="$(BUILD)/stage2.bin" of=$@ conv=notrunc seek=5 bs=512
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qemu: $(BUILD)/disk.img
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qemu-system-i386 \
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-d cpu_reset \
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-no-reboot \
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-smp 1 -m 2048 \
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-machine q35 \
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-net none \
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-serial stdio \
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-fda "$<"
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# -gdb tcp::26000 \
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# -S
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# -enable-kvm \
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# -cpu host \
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