COMPONENTS = kernel

ARCH ?= x86_64

KERNEL_HDD = kornos.img

.PHONY: clean all $(COMPONENTS) run bochs
.DEFAULT_GOAL = $(KERNEL_HDD)

$(COMPONENTS):
	$(MAKE) -C $@ bin/$@-$(ARCH)

disk: $(KERNEL_HDD)
run: $(KERNEL_HDD)
	qemu-system-$(ARCH) \
	-m 16M \
	-drive file=$(KERNEL_HDD),format=raw \
	-smp 2 \
	-enable-kvm \
	$(QEMUFLAGS)

bochs: $(KERNEL_HDD) ext/bochsrc
	rm -f $(KERNEL_HDD).lock
	bochs -qf ext/bochsrc
	rm bochsout.txt

ext/limine/limine-install:
	$(MAKE) -C ext/limine/ limine-install
ext/echfs/echfs-utils:
	$(MAKE) -C ext/echfs/ echfs-utils

$(KERNEL_HDD): ext/limine/limine-install ext/echfs/echfs-utils $(COMPONENTS)
	@rm -f $(KERNEL_HDD)
	@echo Creating $(KERNEL_HDD)
	@dd if=/dev/zero bs=1M count=0 seek=64 of=$(KERNEL_HDD) status=none
	@parted -s $(KERNEL_HDD) mklabel msdos
	@parted -s $(KERNEL_HDD) mkpart primary 1 100%
	@ext/echfs/echfs-utils -m -p0 $(KERNEL_HDD) quick-format 32768 > /dev/null # silence UUID
	@for f in $(COMPONENTS); do echo "Installing $$f ($$(du -h $$f/bin/$$f-$(ARCH) | cut -f1))"; ext/echfs/echfs-utils -m -p0 $@ import $$f/bin/$$f-$(ARCH) $$f; done
	@echo Installing bootloader
	@ext/echfs/echfs-utils -m -p0 $(KERNEL_HDD) import ext/limine.cfg limine.cfg
	@ext/limine/limine-install ext/limine/limine.bin $(KERNEL_HDD)

clean:
	rm -f $(KERNEL_HDD)
	for f in $(COMPONENTS); do $(MAKE) -C $$f clean; done