Red Bear OS
3cc7ed909c
Rust nightly requires -Zunstable-options for custom target JSON specs (such as x86-unknown-none.json). Without it, the build fails with: error: error loading target specification: custom targets are unstable and require `-Zunstable-options` UEFI already uses the built-in x86_64-unknown-uefi target, so it didn't need this flag. The kernel recipe already has this fix; the bootloader BIOS Makefile was missing it.
66 lines
2.0 KiB
Makefile
66 lines
2.0 KiB
Makefile
export LD?=ld
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export OBJCOPY?=objcopy
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export PARTED?=parted
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export QEMU?=qemu-system-x86_64
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all: $(BUILD)/bootloader.bin
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$(BUILD)/libbootloader.a: $(SOURCE)/Cargo.toml $(SOURCE)/Cargo.lock $(shell find $(SOURCE)/src -type f)
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mkdir -p "$(BUILD)"
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env RUSTFLAGS="--cfg aes_force_soft -Zunstable-options" \
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cargo rustc \
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--manifest-path="$<" \
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-Z build-std=core,alloc \
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-Z build-std-features=compiler-builtins-mem \
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--target "$(TARGET)" \
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--lib \
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--release \
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-- \
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--emit link="$@"
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$(BUILD)/libbootloader-live.a: $(SOURCE)/Cargo.toml $(SOURCE)/Cargo.lock $(shell find $(SOURCE)/src -type f)
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mkdir -p "$(BUILD)"
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env RUSTFLAGS="--cfg aes_force_soft -Zunstable-options" \
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cargo rustc \
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--manifest-path="$<" \
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-Z build-std=core,alloc \
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-Z build-std-features=compiler-builtins-mem \
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--target "$(TARGET)" \
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--lib \
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--release \
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--features live \
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-- \
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--emit link="$@"
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$(BUILD)/%.elf: $(BUILD)/lib%.a $(SOURCE)/linkers/$(TARGET).ld
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$(LD) -m elf_i386 --gc-sections -z max-page-size=0x1000 -T "$(SOURCE)/linkers/$(TARGET).ld" -o "$@" "$<"
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$(OBJCOPY) --only-keep-debug "$@" "$@.sym"
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$(OBJCOPY) --strip-debug "$@"
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$(BUILD)/%.bin: $(BUILD)/%.elf $(shell find $(SOURCE)/asm/$(TARGET) -type f)
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nasm -f bin -o "$@" -l "$@.lst" -D STAGE3="$<" -i"$(SOURCE)/asm/$(TARGET)/" "$(SOURCE)/asm/$(TARGET)/bootloader.asm"
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$(BUILD)/harddrive.bin: $(BUILD)/bootloader.bin $(BUILD)/filesystem.bin
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rm -f "$@.partial"
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fallocate -l 256MiB "$@.partial"
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$(PARTED) -s -a minimal "$@.partial" mklabel msdos
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$(PARTED) -s -a minimal "$@.partial" mkpart primary 2MiB 100%
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dd if="$<" of="$@.partial" bs=1 count=446 conv=notrunc
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dd if="$<" of="$@.partial" bs=512 skip=1 seek=1 conv=notrunc
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dd if="$(BUILD)/filesystem.bin" of="$@.partial" bs=1MiB seek=2 conv=notrunc
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mv "$@.partial" "$@"
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qemu: $(BUILD)/harddrive.bin
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$(QEMU) \
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-d cpu_reset \
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-no-reboot \
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-smp 4 -m 2048 \
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-chardev stdio,id=debug,signal=off,mux=on \
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-serial chardev:debug \
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-mon chardev=debug \
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-machine q35 \
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-net none \
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-enable-kvm \
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-cpu host \
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-drive file="$<",format=raw
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