X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=dts%2FMakefile;h=3cf991eaf2f801b1f3886a9627d927296aa239ea;hb=127efc4fe8cfc3ed525650b1ccbad9c3402e8d5d;hp=8b13b2324563735cd24a6d6f47d0ce7b7afe5b20;hpb=82f45866ee90b5e6a8f63500ae6feada0864d821;p=u-boot

diff --git a/dts/Makefile b/dts/Makefile
index 8b13b23245..3cf991eaf2 100644
--- a/dts/Makefile
+++ b/dts/Makefile
@@ -1,23 +1,7 @@
 #
 # 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
+# SPDX-License-Identifier:	GPL-2.0+
 #
 
 # This Makefile builds the internal U-Boot fdt if CONFIG_OF_CONTROL is
@@ -27,16 +11,21 @@ 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))
 DEVICE_TREE = $(subst ",,$(CONFIG_DEFAULT_DEVICE_TREE))
+endif
+
+DTS_INCDIRS =  $(SRCTREE)/board/$(VENDOR)/$(BOARD)/dts
+DTS_INCDIRS += $(SRCTREE)/board/$(VENDOR)/dts
+DTS_INCDIRS += $(SRCTREE)/arch/$(ARCH)/dts
 
-$(if $(CONFIG_ARCH_DEVICE_TREE),,\
-$(error Your architecture does not have device tree support enabled. \
-Please define CONFIG_ARCH_DEVICE_TREE))
+DTS_CPPFLAGS := -x assembler-with-cpp -undef -D__DTS__ \
+		-nostdinc $(addprefix -I,$(DTS_INCDIRS))
 
-# We preprocess the device tree file provide a useful define
-DTS_CPPFLAGS := -DARCH_CPU_DTS=\"$(SRCTREE)/arch/$(ARCH)/dts/$(CONFIG_ARCH_DEVICE_TREE).dtsi\"
+DTC_FLAGS := -R 4 -p 0x1000 \
+	$(addprefix -i ,$(DTS_INCDIRS))
 
 all:	$(obj).depend $(LIB)
 
@@ -46,9 +35,8 @@ all:	$(obj).depend $(LIB)
 DT_BIN	:= $(obj)dt.dtb
 
 $(DT_BIN): $(TOPDIR)/board/$(VENDOR)/dts/$(DEVICE_TREE).dts
-	cat $< | $(CPP) -P $(DTS_CPPFLAGS) - >$@.tmp
-	$(DTC) -R 4 -p 0x1000 -O dtb -o ${DT_BIN} $@.tmp
-	rm $@.tmp
+	$(CPP) $(DTS_CPPFLAGS) $< -o $(DT_BIN).dts.tmp
+	$(DTC) $(DTC_FLAGS) -O dtb -o ${DT_BIN} $(DT_BIN).dts.tmp
 
 process_lds = \
 	$(1) | sed -r -n 's/^OUTPUT_$(2)[ ("]*([^")]*).*/\1/p'
@@ -62,8 +50,9 @@ $(obj)dt.o: $(DT_BIN)
 	# We look in the LDSCRIPT first.
 	# Then try the linker which should give us the answer.
 	# Then check it worked.
-	oformat=`$(call process_lds,cat $(LDSCRIPT),FORMAT)` ;\
-	oarch=`$(call process_lds,cat $(LDSCRIPT),ARCH)` ;\
+	[ -n "$(LDSCRIPT)" ] && \
+		oformat=`$(call process_lds,cat $(LDSCRIPT),FORMAT)` && \
+		oarch=`$(call process_lds,cat $(LDSCRIPT),ARCH)` ;\
 	\
 	[ -z $${oformat} ] && \
 		oformat=`$(call process_lds,$(GET_LDS),FORMAT)` ;\