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| | # SPDX-License-Identifier: EUPL-1.2
# SPDX-FileCopyrightText: 2021-2022 Alyssa Ross <hi@alyssa.is>
# qemu-kvm is non-standard, but is present in at least Fedora and
# Nixpkgs. If you don't have qemu-kvm, you'll need to set e.g.
# QEMU_KVM = qemu-system-x86_64 -enable-kvm.
QEMU_KVM = qemu-kvm
MCOPY = mcopy
MKFS_FAT = mkfs.fat
MMD = mmd
OBJCOPY = objcopy
SCRIPTS = ../../scripts
TRUNCATE = truncate
VERITYSETUP = veritysetup
build/live.img: $(SCRIPTS)/format-uuid.sh $(SCRIPTS)/make-gpt.sh build/boot.fat build/rootfs.verity.superblock build/rootfs.verity.roothash $(ROOT_FS) $(EXT_FS)
$(SCRIPTS)/make-gpt.sh $@.tmp \
build/boot.fat:c12a7328-f81f-11d2-ba4b-00a0c93ec93b \
build/rootfs.verity.superblock:2c7357ed-ebd2-46d9-aec1-23d437ec2bf5:$$($(SCRIPTS)/format-uuid.sh "$$(dd if=build/rootfs.verity.roothash bs=32 skip=1 count=1 status=none)") \
$(ROOT_FS):4f68bce3-e8cd-4db1-96e7-fbcaf984b709:$$($(SCRIPTS)/format-uuid.sh "$$(head -c 32 build/rootfs.verity.roothash)") \
$(EXT_FS):9293e1ff-cee4-4658-88be-898ec863944f
mv $@.tmp $@
build/spectrum.conf: build/rootfs.verity.roothash
printf "title Spectrum\n" > $@
printf "linux /spectrum/linux\n" >> $@
printf "initrd /spectrum/initrd\n" >> $@
printf "options ro console=ttyS0 roothash=" >> $@
cat build/rootfs.verity.roothash >> $@
build/boot.fat: $(KERNEL) $(INITRAMFS) $(SYSTEMD_BOOT_EFI) build/spectrum.conf
$(TRUNCATE) -s 220200960 $@
$(MKFS_FAT) $@
$(MMD) -i $@ ::/EFI ::/EFI/BOOT ::/loader ::/loader/entries ::/spectrum
$(MCOPY) -i $@ build/spectrum.conf ::/loader/entries
$(MCOPY) -i $@ $(KERNEL) ::/spectrum/linux
$(MCOPY) -i $@ $(INITRAMFS) ::/spectrum/initrd
$(MCOPY) -i $@ $(SYSTEMD_BOOT_EFI) ::/EFI/BOOT/BOOTX64.EFI
# veritysetup format produces two files, but Make only (portably)
# supports one output per rule, so we combine the two outputs then
# define two more rules to separate them again.
build/rootfs.verity: $(ROOT_FS)
mkdir -p build
$(VERITYSETUP) format $(ROOT_FS) build/rootfs.verity.superblock.tmp \
| awk -F ':[[:blank:]]*' '$$1 == "Root hash" {print $$2; exit}' \
> build/rootfs.verity.roothash.tmp
cat build/rootfs.verity.roothash.tmp build/rootfs.verity.superblock.tmp \
> $@
rm build/rootfs.verity.roothash.tmp build/rootfs.verity.superblock.tmp
build/rootfs.verity.roothash: build/rootfs.verity
head -n 1 build/rootfs.verity > $@
build/rootfs.verity.superblock: build/rootfs.verity
tail -n +2 build/rootfs.verity > $@
clean:
rm -rf build
.PHONY: clean
run: build/live.img
$(QEMU_KVM) -m 4G \
-cpu host \
-display gtk,gl=on \
-device virtio-vga-gl \
-device qemu-xhci \
-device usb-storage,drive=drive1,removable=true \
-drive file=$(OVMF_CODE),format=raw,if=pflash,readonly=true \
-drive file=build/live.img,id=drive1,format=raw,if=none,readonly=true
.PHONY: run
|