dts/Makefile - chromiumos/third_party/u-boot - Git at Google

 #
 # Copyright (c) 2011 The Chromium OS Authors.
 #
 # See file CREDITS for list of people who contributed to this
 # project.
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License as
 # published by the Free Software Foundatio; either version 2 of
 # the License, or (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 # MA 02111-1307 USA
 #

 # This Makefile builds the internal U-Boot fdt if CONFIG_OF_CONTROL is
 # enabled. See doc/README.fdt-control for more details.

 include $(TOPDIR)/config.mk

 LIB	= $(obj)libdts.o

 ifeq ($(DEVICE_TREE),)

 $(if $(CONFIG_DEFAULT_DEVICE_TREE),,\
 $(error Please define CONFIG_DEFAULT_DEVICE_TREE in your board header file))

 DEFAULT_TREE := $(subst ",,$(obj)$(CONFIG_DEFAULT_DEVICE_TREE).dtb)

 ifeq ($(CONFIG_DEVICE_TREE_LIST),)
 DEV_TREE_LIST := $(subst ",,$(CONFIG_DEFAULT_DEVICE_TREE))
 else
 DEV_TREE_LIST := $(subst ",,$(CONFIG_DEVICE_TREE_LIST))
 endif

 else  # DEVICE_TREE ^^^ empty  vvvvv set

 # If DEVICE_TREE is defined, it will be the only tree built
 DEV_TREE_LIST := $(DEVICE_TREE)
 DEFAULT_TREE := $(obj)$(DEVICE_TREE).dtb)

 endif

 $(if $(CONFIG_ARCH_DEVICE_TREE),,\
 $(error Your architecture does not have device tree support enabled. \
 Please define CONFIG_ARCH_DEVICE_TREE))

 # Provide a list of include directories for dtc
 DTS_INCS-y := -i $(SRCTREE)/arch/$(ARCH)/dts

 DTS_INCS-y += -i $(SRCTREE)/board/$(VENDOR)/dts

 DTS_INCS-y += -i $(SRCTREE)/cros/dts

 # Check if our dtc includes
 DTS_FLAGS := $(shell if ! dtc -i 2>&1 | grep -q "invalid option"; then \
 		echo $(DTS_INCS-y); fi)

 # We preprocess the device tree file provide a useful define
 # Undefine 'linux' since it might be used in device tree files
 DTS_CPPFLAGS := -x assembler-with-cpp -Ulinux \
 		-DARCH_CPU_DTS=\"$(SRCTREE)/arch/$(ARCH)/dts/$(CONFIG_ARCH_DEVICE_TREE).dtsi\" \
 		-D__ASSEMBLY__ -I$(OBJTREE)/include -I$(SRCTREE)/include \
 		-I$(OBJTREE)/include2 \
 		-I$(SRCTREE)/board/$(VENDOR)/dts -I$(SRCTREE)/arch/$(ARCH)/dts \
 		-include $(OBJTREE)/include/config.h

 DTS_DIR := $(TOPDIR)/board/$(VENDOR)/dts

 all:	$(obj).depend $(LIB)

 # Use a constant name for this so we can access it from C code.
 # objcopy doesn't seem to allow us to set the symbol name independently of
 # the filename.
 DT_BIN	:= $(obj)dt.dtb

 DT_SOURCES := $(addsuffix .dts,$(DEV_TREE_LIST))

 DT_BINS := $(addprefix $(obj),$(addsuffix .dtb,$(basename $(DT_SOURCES)))) \
 	$(DT_BIN)

 $(obj)dt.dtb: $(DEFAULT_TREE)
 	cp $< $@

 # Get preprocessed version of the tree.
 $(obj)%.dts.in : $(DTS_DIR)/%.dts
 	$(CPP) -P $(DTS_CPPFLAGS) -DBOARD_DTS=$< $< -o $@

 # Compile the preprocessed device tree. Some DTC versions insist on sending
 # output to stderr even when everything is fine, which wrecs havoc on
 # automated testing tools watching for stderr output.
 #
 # To address this issue collect all DTC output in a file and send the file to
 # stderr only if there has been a DTC error. '&& false' enforces a make error.
 #
 $(obj)%.dtb : $(obj)%.dts.in
 	$(DTC) -R 4 -p 0x1000 -O dtb $(DTS_FLAGS) -o $@ $< > $@.errmsg 2>&1 || \
 	(export rc=$$? && cat $@.errmsg >&2 && exit $$rc)
 	rm -f $@.errmsg

 process_lds = \
 	$(1) | sed -r -n 's/^OUTPUT_$(2)[ ("]*([^")]*).*/\1/p'

 # Run the compiler and get the link script from the linker
 GET_LDS = $(CC) $(CFLAGS) $(LDFLAGS) -Wl,--verbose 2>&1

 $(obj)dt.o: $(DT_BIN)
 	# We want the output format and arch.
 	# We also hope to win a prize for ugliest Makefile / shell interaction
 	# We look in the LDSCRIPT first.
 	# Then try the linker which should give us the answer.
 	# Then check it worked.
 	[ -n "$(LDSCRIPT)" ] && \
 		oformat=`$(call process_lds,cat $(LDSCRIPT),FORMAT)` && \
 		oarch=`$(call process_lds,cat $(LDSCRIPT),ARCH)` ;\
 	\
 	[ -z $${oformat} ] && \
 		oformat=`$(call process_lds,$(GET_LDS),FORMAT)` ;\
 	[ -z $${oarch} ] && \
 		oarch=`$(call process_lds,$(GET_LDS),ARCH)` ;\
 	\
 	[ -z $${oformat} ] && \
 		echo "Cannot read OUTPUT_FORMAT from lds file $(LDSCRIPT)" && \
 		exit 1 || true ;\
 	[ -z $${oarch} ] && \
 		echo "Cannot read OUTPUT_ARCH from lds file $(LDSCRIPT)" && \
 		exit 1 || true ;\
 	\
 	cd $(dir ${DT_BIN}) && \
 	$(OBJCOPY) -I binary -O $${oformat} -B $${oarch} \
 		$(notdir ${DT_BIN}) $@
 	rm $(DT_BIN)

 OBJS-$(CONFIG_OF_EMBED)	:= dt.o

 COBJS	:= $(OBJS-y)

 OBJS	:= $(addprefix $(obj),$(COBJS))

 binary:	$(DT_BINS)

 $(LIB):	$(OBJS) $(DTB)
 	$(call cmd_link_o_target, $(OBJS))

 #########################################################################

 # defines $(obj).depend target
 include $(SRCTREE)/rules.mk

 sinclude $(obj).depend

 #########################################################################
	#
	# Copyright (c) 2011 The Chromium OS Authors.
	#
	# See file CREDITS for list of people who contributed to this
	# project.
	#
	# This program is free software; you can redistribute it and/or
	# modify it under the terms of the GNU General Public License as
	# published by the Free Software Foundatio; either version 2 of
	# the License, or (at your option) any later version.
	#
	# This program is distributed in the hope that it will be useful,
	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	# GNU General Public License for more details.
	#
	# You should have received a copy of the GNU General Public License
	# along with this program; if not, write to the Free Software
	# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	# MA 02111-1307 USA
	#

	# This Makefile builds the internal U-Boot fdt if CONFIG_OF_CONTROL is
	# enabled. See doc/README.fdt-control for more details.

	include $(TOPDIR)/config.mk

	LIB = $(obj)libdts.o

	ifeq ($(DEVICE_TREE),)

	$(if $(CONFIG_DEFAULT_DEVICE_TREE),,\
	$(error Please define CONFIG_DEFAULT_DEVICE_TREE in your board header file))

	DEFAULT_TREE := $(subst ",,$(obj)$(CONFIG_DEFAULT_DEVICE_TREE).dtb)

	ifeq ($(CONFIG_DEVICE_TREE_LIST),)
	DEV_TREE_LIST := $(subst ",,$(CONFIG_DEFAULT_DEVICE_TREE))
	else
	DEV_TREE_LIST := $(subst ",,$(CONFIG_DEVICE_TREE_LIST))
	endif

	else # DEVICE_TREE ^^^ empty vvvvv set

	# If DEVICE_TREE is defined, it will be the only tree built
	DEV_TREE_LIST := $(DEVICE_TREE)
	DEFAULT_TREE := $(obj)$(DEVICE_TREE).dtb)

	endif

	$(if $(CONFIG_ARCH_DEVICE_TREE),,\
	$(error Your architecture does not have device tree support enabled. \
	Please define CONFIG_ARCH_DEVICE_TREE))

	# Provide a list of include directories for dtc
	DTS_INCS-y := -i $(SRCTREE)/arch/$(ARCH)/dts

	DTS_INCS-y += -i $(SRCTREE)/board/$(VENDOR)/dts

	DTS_INCS-y += -i $(SRCTREE)/cros/dts

	# Check if our dtc includes
	DTS_FLAGS := $(shell if ! dtc -i 2>&1 \| grep -q "invalid option"; then \
	echo $(DTS_INCS-y); fi)

	# We preprocess the device tree file provide a useful define
	# Undefine 'linux' since it might be used in device tree files
	DTS_CPPFLAGS := -x assembler-with-cpp -Ulinux \
	-DARCH_CPU_DTS=\"$(SRCTREE)/arch/$(ARCH)/dts/$(CONFIG_ARCH_DEVICE_TREE).dtsi\" \
	-D__ASSEMBLY__ -I$(OBJTREE)/include -I$(SRCTREE)/include \
	-I$(OBJTREE)/include2 \
	-I$(SRCTREE)/board/$(VENDOR)/dts -I$(SRCTREE)/arch/$(ARCH)/dts \
	-include $(OBJTREE)/include/config.h

	DTS_DIR := $(TOPDIR)/board/$(VENDOR)/dts

	all: $(obj).depend $(LIB)

	# Use a constant name for this so we can access it from C code.
	# objcopy doesn't seem to allow us to set the symbol name independently of
	# the filename.
	DT_BIN := $(obj)dt.dtb

	DT_SOURCES := $(addsuffix .dts,$(DEV_TREE_LIST))

	DT_BINS := $(addprefix $(obj),$(addsuffix .dtb,$(basename $(DT_SOURCES)))) \
	$(DT_BIN)

	$(obj)dt.dtb: $(DEFAULT_TREE)
	cp $< $@

	# Get preprocessed version of the tree.
	$(obj)%.dts.in : $(DTS_DIR)/%.dts
	$(CPP) -P $(DTS_CPPFLAGS) -DBOARD_DTS=$< $< -o $@

	# Compile the preprocessed device tree. Some DTC versions insist on sending
	# output to stderr even when everything is fine, which wrecs havoc on
	# automated testing tools watching for stderr output.
	#
	# To address this issue collect all DTC output in a file and send the file to
	# stderr only if there has been a DTC error. '&& false' enforces a make error.
	#
	$(obj)%.dtb : $(obj)%.dts.in
	$(DTC) -R 4 -p 0x1000 -O dtb $(DTS_FLAGS) -o $@ $< > $@.errmsg 2>&1 \|\| \
	(export rc=$$? && cat $@.errmsg >&2 && exit $$rc)
	rm -f $@.errmsg

	process_lds = \
	$(1) \| sed -r -n 's/^OUTPUT_$(2)[ ("]([^")]).*/\1/p'

	# Run the compiler and get the link script from the linker
	GET_LDS = $(CC) $(CFLAGS) $(LDFLAGS) -Wl,--verbose 2>&1

	$(obj)dt.o: $(DT_BIN)
	# We want the output format and arch.
	# We also hope to win a prize for ugliest Makefile / shell interaction
	# We look in the LDSCRIPT first.
	# Then try the linker which should give us the answer.
	# Then check it worked.
	[ -n "$(LDSCRIPT)" ] && \
	oformat=`$(call process_lds,cat $(LDSCRIPT),FORMAT)` && \
	oarch=`$(call process_lds,cat $(LDSCRIPT),ARCH)` ;\
	\
	[ -z $${oformat} ] && \
	oformat=`$(call process_lds,$(GET_LDS),FORMAT)` ;\
	[ -z $${oarch} ] && \
	oarch=`$(call process_lds,$(GET_LDS),ARCH)` ;\
	\
	[ -z $${oformat} ] && \
	echo "Cannot read OUTPUT_FORMAT from lds file $(LDSCRIPT)" && \
	exit 1 \|\| true ;\
	[ -z $${oarch} ] && \
	echo "Cannot read OUTPUT_ARCH from lds file $(LDSCRIPT)" && \
	exit 1 \|\| true ;\
	\
	cd $(dir ${DT_BIN}) && \
	$(OBJCOPY) -I binary -O $${oformat} -B $${oarch} \
	$(notdir ${DT_BIN}) $@
	rm $(DT_BIN)

	OBJS-$(CONFIG_OF_EMBED) := dt.o

	COBJS := $(OBJS-y)

	OBJS := $(addprefix $(obj),$(COBJS))

	binary: $(DT_BINS)

	$(LIB): $(OBJS) $(DTB)
	$(call cmd_link_o_target, $(OBJS))

	#########################################################################

	# defines $(obj).depend target
	include $(SRCTREE)/rules.mk

	sinclude $(obj).depend

	#########################################################################