include config.mk

# Nuke built-in rules and variables.
MAKEFLAGS += -rR
.SUFFIXES:

override QEMUFLAGS := -m $(MEMORY)
override IMAGE_NAME := XunilOS-$(KARCH)

.PHONY: all
all: $(IMAGE_NAME).iso

.PHONY: all-hdd
all-hdd: $(IMAGE_NAME).hdd

.PHONY: run
run: run-$(KARCH)

.PHONY: run-hdd
run-hdd: run-hdd-$(KARCH)

.PHONY: run-x86_64
run-x86_64: edk2-ovmf $(IMAGE_NAME).iso
	qemu-system-$(KARCH) \
		-M q35 \
		-serial stdio \
		-drive if=pflash,unit=0,format=raw,file=edk2-ovmf/ovmf-code-$(KARCH).fd,readonly=on \
		-cdrom $(IMAGE_NAME).iso \
		$(QEMUFLAGS)

.PHONY: run-hdd-x86_64
run-hdd-x86_64: edk2-ovmf $(IMAGE_NAME).hdd
	qemu-system-$(KARCH) \
		-M q35 \
		-drive if=pflash,unit=0,format=raw,file=edk2-ovmf/ovmf-code-$(KARCH).fd,readonly=on \
		-hda $(IMAGE_NAME).hdd \
		$(QEMUFLAGS)

.PHONY: run-aarch64
run-aarch64: edk2-ovmf $(IMAGE_NAME).iso
	qemu-system-$(KARCH) \
		-M virt \
		-cpu cortex-a72 \
		-device ramfb \
		-device qemu-xhci \
		-device usb-kbd \
		-device usb-mouse \
		-serial stdio \
		-drive if=pflash,unit=0,format=raw,file=edk2-ovmf/ovmf-code-$(KARCH).fd,readonly=on \
		-cdrom $(IMAGE_NAME).iso \
		-semihosting-config enable=on,target=native \
		$(QEMUFLAGS)

.PHONY: run-hdd-aarch64
run-hdd-aarch64: edk2-ovmf $(IMAGE_NAME).hdd
	qemu-system-$(KARCH) \
		-M virt \
		-cpu cortex-a72 \
		-device ramfb \
		-device qemu-xhci \
		-device usb-kbd \
		-device usb-mouse \
		-drive if=pflash,unit=0,format=raw,file=edk2-ovmf/ovmf-code-$(KARCH).fd,readonly=on \
		-hda $(IMAGE_NAME).hdd \
		$(QEMUFLAGS)

.PHONY: run-riscv64
run-riscv64: edk2-ovmf $(IMAGE_NAME).iso
	qemu-system-$(KARCH) \
		-M virt \
		-cpu rv64 \
		-device ramfb \
		-device qemu-xhci \
		-device usb-kbd \
		-device usb-mouse \
		-drive if=pflash,unit=0,format=raw,file=edk2-ovmf/ovmf-code-$(KARCH).fd,readonly=on \
		-cdrom $(IMAGE_NAME).iso \
		$(QEMUFLAGS)

.PHONY: run-hdd-riscv64
run-hdd-riscv64: edk2-ovmf $(IMAGE_NAME).hdd
	qemu-system-$(KARCH) \
		-M virt \
		-cpu rv64 \
		-device ramfb \
		-device qemu-xhci \
		-device usb-kbd \
		-device usb-mouse \
		-drive if=pflash,unit=0,format=raw,file=edk2-ovmf/ovmf-code-$(KARCH).fd,readonly=on \
		-hda $(IMAGE_NAME).hdd \
		$(QEMUFLAGS)

.PHONY: run-loongarch64
run-loongarch64: edk2-ovmf $(IMAGE_NAME).iso
	qemu-system-$(KARCH) \
		-M virt \
		-cpu la464 \
		-device ramfb \
		-device qemu-xhci \
		-device usb-kbd \
		-device usb-mouse \
		-drive if=pflash,unit=0,format=raw,file=edk2-ovmf/ovmf-code-$(KARCH).fd,readonly=on \
		-cdrom $(IMAGE_NAME).iso \
		$(QEMUFLAGS)

.PHONY: run-hdd-loongarch64
run-hdd-loongarch64: edk2-ovmf $(IMAGE_NAME).hdd
	qemu-system-$(KARCH) \
		-M virt \
		-cpu la464 \
		-device ramfb \
		-device qemu-xhci \
		-device usb-kbd \
		-device usb-mouse \
		-drive if=pflash,unit=0,format=raw,file=edk2-ovmf/ovmf-code-$(KARCH).fd,readonly=on \
		-hda $(IMAGE_NAME).hdd \
		$(QEMUFLAGS)


.PHONY: run-bios
run-bios: $(IMAGE_NAME).iso
	qemu-system-$(KARCH) \
		-M q35 \
		-cdrom $(IMAGE_NAME).iso \
		-boot d \
		$(QEMUFLAGS)

.PHONY: run-hdd-bios
run-hdd-bios: $(IMAGE_NAME).hdd
	qemu-system-$(KARCH) \
		-M q35 \
		-hda $(IMAGE_NAME).hdd \
		$(QEMUFLAGS)

edk2-ovmf:
		curl -L https://github.com/osdev0/edk2-ovmf-nightly/releases/latest/download/edk2-ovmf.tar.gz | gunzip | tar -xf -

limine/limine:
	rm -rf limine
	git clone https://github.com/limine-bootloader/limine.git --branch=v10.x-binary --depth=1
	$(MAKE) -C limine

.PHONY: kernel
kernel:
	$(MAKE) -C kernel

$(IMAGE_NAME).iso: limine/limine kernel
	rm -rf iso_root
	mkdir -p iso_root/boot
	cp -v kernel/kernel iso_root/boot/
	mkdir -p iso_root/boot/limine
	cp -v limine.conf iso_root/boot/limine/
	mkdir -p iso_root/EFI/BOOT
ifeq ($(KARCH),x86_64)
	cp -v limine/limine-bios.sys limine/limine-bios-cd.bin limine/limine-uefi-cd.bin iso_root/boot/limine/
	cp -v limine/BOOTX64.EFI iso_root/EFI/BOOT/
	cp -v limine/BOOTIA32.EFI iso_root/EFI/BOOT/
	xorriso -as mkisofs -b boot/limine/limine-bios-cd.bin \
		-no-emul-boot -boot-load-size 4 -boot-info-table \
		--efi-boot boot/limine/limine-uefi-cd.bin \
		-efi-boot-part --efi-boot-image --protective-msdos-label \
		iso_root -o $(IMAGE_NAME).iso
	./limine/limine bios-install $(IMAGE_NAME).iso
endif
ifeq ($(KARCH),aarch64)
	cp -v limine/limine-uefi-cd.bin iso_root/boot/limine/
	cp -v limine/BOOTAA64.EFI iso_root/EFI/BOOT/
	xorriso -as mkisofs \
		--efi-boot boot/limine/limine-uefi-cd.bin \
		-efi-boot-part --efi-boot-image --protective-msdos-label \
		iso_root -o $(IMAGE_NAME).iso
endif
ifeq ($(KARCH),riscv64)
	cp -v limine/limine-uefi-cd.bin iso_root/boot/limine/
	cp -v limine/BOOTRISCV64.EFI iso_root/EFI/BOOT/
	xorriso -as mkisofs \
		--efi-boot boot/limine/limine-uefi-cd.bin \
		-efi-boot-part --efi-boot-image --protective-msdos-label \
		iso_root -o $(IMAGE_NAME).iso
endif
ifeq ($(KARCH),loongarch64)
	cp -v limine/limine-uefi-cd.bin iso_root/boot/limine/
	cp -v limine/BOOTLOONGARCH64.EFI iso_root/EFI/BOOT/
	xorriso -as mkisofs \
		--efi-boot boot/limine/limine-uefi-cd.bin \
		-efi-boot-part --efi-boot-image --protective-msdos-label \
		iso_root -o $(IMAGE_NAME).iso
endif
	rm -rf iso_root

$(IMAGE_NAME).hdd: limine/limine kernel
	rm -f $(IMAGE_NAME).hdd
	dd if=/dev/zero bs=1M count=0 seek=64 of=$(IMAGE_NAME).hdd
	sgdisk $(IMAGE_NAME).hdd -n 1:2048 -t 1:ef00
ifeq ($(KARCH),x86_64)
	./limine/limine bios-install $(IMAGE_NAME).hdd
endif
	mformat -i $(IMAGE_NAME).hdd@@1M
	mmd -i $(IMAGE_NAME).hdd@@1M ::/EFI ::/EFI/BOOT ::/boot ::/boot/limine
	mcopy -i $(IMAGE_NAME).hdd@@1M kernel/bin-$(KARCH)/kernel ::/boot
	mcopy -i $(IMAGE_NAME).hdd@@1M limine.conf ::/boot/limine
ifeq ($(KARCH),x86_64)
	mcopy -i $(IMAGE_NAME).hdd@@1M limine/limine-bios.sys ::/boot/limine
	mcopy -i $(IMAGE_NAME).hdd@@1M limine/BOOTX64.EFI ::/EFI/BOOT
	mcopy -i $(IMAGE_NAME).hdd@@1M limine/BOOTIA32.EFI ::/EFI/BOOT
endif
ifeq ($(KARCH),aarch64)
	mcopy -i $(IMAGE_NAME).hdd@@1M limine/BOOTAA64.EFI ::/EFI/BOOT
endif
ifeq ($(KARCH),riscv64)
	mcopy -i $(IMAGE_NAME).hdd@@1M limine/BOOTRISCV64.EFI ::/EFI/BOOT
endif
ifeq ($(KARCH),loongarch64)
	mcopy -i $(IMAGE_NAME).hdd@@1M limine/BOOTLOONGARCH64.EFI ::/EFI/BOOT
endif

.PHONY: clean
clean:
	$(MAKE) -C kernel clean
	rm -rf iso_root $(IMAGE_NAME).iso $(IMAGE_NAME).hdd

.PHONY: distclean
distclean: clean
	$(MAKE) -C kernel distclean
	rm -rf limine ovmf
