CROSS_COMPILE	?= arm-linux-gnueabihf-
JOBS		?= $(shell nproc)

src_dir		:= $(CURDIR)
build_root	:= $(src_dir)/build-ux500
output_dir	:= $(src_dir)/ste-ux500-samsung-bin

boards := \
	ste-ux500-samsung-codina \
	ste-ux500-samsung-codina-tmo \
	ste-ux500-samsung-gavini \
	ste-ux500-samsung-golden \
	ste-ux500-samsung-janice \
	ste-ux500-samsung-kyle \
	ste-ux500-samsung-skomer

binaries := $(boards:%=$(output_dir)/%.bin)
images := $(boards:%=$(output_dir)/%.img)

.PHONY: build clean have-tools FORCE
.SECONDARY: $(binaries)

build: have-tools $(images)

have-tools:
	@printf "Check that $(CROSS_COMPILE)gcc is available..."
	@command -v $(CROSS_COMPILE)gcc >/dev/null || { \
		echo "ERROR"; \
		echo "Cross-compiler $(CROSS_COMPILE)gcc is not in PATH=$(PATH)"; \
		exit 1; \
	}
	@echo "OK"
	@printf "Check that abootimg is available..."
	@command -v abootimg >/dev/null || { \
		echo "ERROR"; \
		echo "abootimg is not in PATH=$(PATH)"; \
		exit 1; \
	}
	@echo "OK"

$(output_dir):
	mkdir -p $@

$(output_dir)/%.bin: FORCE | $(output_dir)
	rm -rf $(build_root)/$*
	$(MAKE) O=$(build_root)/$* CROSS_COMPILE=$(CROSS_COMPILE) \
		stemmy_defconfig
	scripts/config --file $(build_root)/$*/.config --set-str \
		DEFAULT_DEVICE_TREE "st/$*"
	$(MAKE) O=$(build_root)/$* CROSS_COMPILE=$(CROSS_COMPILE) \
		olddefconfig
	$(MAKE) -j$(JOBS) O=$(build_root)/$* \
		CROSS_COMPILE=$(CROSS_COMPILE)
	cp $(build_root)/$*/u-boot.bin $@

$(output_dir)/%.img: $(output_dir)/%.bin
	printf 'dummy\n' >$(build_root)/$*/null-initrd
	abootimg --create $@ -k $< -r $(build_root)/$*/null-initrd \
		-c "bootsize=0x80000" -c "pagesize=0x800" \
		-c "kerneladdr=0x100000" -c "ramdiskaddr=0x2000000" \
		-c "secondaddr=0xf00000" -c "tagsaddr=0x100"

clean:
	rm -rf $(build_root) $(output_dir)

FORCE: