#
 # Makefile to build the device trees
 #
 # Copyright (c) 2016, Xilinx Inc
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are met:
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above copyright
 #       notice, this list of conditions and the following disclaimer in the
 #       documentation and/or other materials provided with the distribution.
 #     * Neither the name of the <organization> nor the
 #       names of its contributors may be used to endorse or promote products
 #       derived from this software without specific prior written permission.
 #
 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 # DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
 # DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

OUTDIR 	?= ./
GCC		?= gcc
DTC		?= dtc

SINGLE_ARCH_OUTDIR		:= $(OUTDIR)/LATEST/SINGLE_ARCH
MULTI_ARCH_OUTDIR 		:= $(OUTDIR)/LATEST/MULTI_ARCH
LQSPI_XIP_OUTDIR		:= $(OUTDIR)/LATEST/LQSPI_XIP

DTS_FILES			:= $(wildcard *.dts)
DTSI_FILES			:= $(wildcard *.dtsi)
HEADER_FILES		:= $(wildcard *.dtsh)

.PHONY:	all source

TARGETS = \
	$(patsubst %.dts,$(SINGLE_ARCH_OUTDIR)/%.$(1),$(DTS_FILES))    \
	$(patsubst %.dts,$(MULTI_ARCH_OUTDIR)/%.$(1),$(DTS_FILES))     \
	$(patsubst %.dts,$(LQSPI_XIP_OUTDIR)/%.$(1),$(DTS_FILES))

COMPILE = \
	@mkdir -p $(1); \
	$(GCC) -E -nostdinc -x assembler-with-cpp $(3) -o - $< | \
		$(DTC) -q -O $(2) -I dts -o $@ - -b 0;

all:	$(call TARGETS,dtb)

source:	all $(call TARGETS,dts)

$(SINGLE_ARCH_OUTDIR)/%.dtb:	%.dts $(DTSI_FILES) $(HEADER_FILES)
	$(call COMPILE,$(SINGLE_ARCH_OUTDIR),dtb)
$(SINGLE_ARCH_OUTDIR)/%.dts:	%.dts $(DTSI_FILES) $(HEADER_FILES)
	$(call COMPILE,$(SINGLE_ARCH_OUTDIR),dts)

$(MULTI_ARCH_OUTDIR)/%.dtb:	%.dts $(DTSI_FILES) $(HEADER_FILES)
	$(call COMPILE,$(MULTI_ARCH_OUTDIR),dtb,-DMULTI_ARCH)
$(MULTI_ARCH_OUTDIR)/%.dts:	%.dts $(DTSI_FILES) $(HEADER_FILES)
	$(call COMPILE,$(MULTI_ARCH_OUTDIR),dts,-DMULTI_ARCH)

$(LQSPI_XIP_OUTDIR)/%.dtb:	%.dts $(DTSI_FILES) $(HEADER_FILES)
	$(call COMPILE,$(LQSPI_XIP_OUTDIR),dtb,-DLQSPI_XIP)
$(LQSPI_XIP_OUTDIR)/%.dts:	%.dts $(DTSI_FILES) $(HEADER_FILES)
	$(call COMPILE,$(LQSPI_XIP_OUTDIR),dts,-DLQSPI_XIP)

clean:
	@rm -rf LATEST;