#
# 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
# enabled. See doc/README.fdt-control for more details.
-include $(TOPDIR)/config.mk
-
-LIB = $(obj)libdts.o
-
+DEVICE_TREE ?= $(CONFIG_DEFAULT_DEVICE_TREE:"%"=%)
ifeq ($(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))
+DEVICE_TREE := unset
endif
-$(if $(CONFIG_ARCH_DEVICE_TREE),,\
-$(error Your architecture does not have device tree support enabled. \
-Please define CONFIG_ARCH_DEVICE_TREE))
-
-# We preprocess the device tree file provide a useful define
-DTS_CPPFLAGS := -x assembler-with-cpp \
- -DARCH_CPU_DTS=\"$(SRCTREE)/arch/$(ARCH)/dts/$(CONFIG_ARCH_DEVICE_TREE).dtsi\" \
- -DBOARD_DTS=\"$(SRCTREE)/board/$(VENDOR)/$(BOARD)/dts/$(DEVICE_TREE).dts\" \
- -I$(SRCTREE)/board/$(VENDOR)/dts -I$(SRCTREE)/arch/$(ARCH)/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 := $(obj)dt.dtb
+ARCH_PATH := arch/$(ARCH)/dts
+dtb_depends := arch-dtbs
-$(DT_BIN): $(TOPDIR)/board/$(VENDOR)/dts/$(DEVICE_TREE).dts
- rc=$$( \
- cat $< | $(CPP) -P $(DTS_CPPFLAGS) - | \
- { { $(DTC) -R 4 -p 0x1000 -O dtb -o ${DT_BIN} - 2>&1 ; \
- echo $$? >&3 ; } | \
- grep -v '^DTC: dts->dtb on file' ; \
- } 3>&1 1>&2 ) ; \
- exit $$rc
-
-process_lds = \
- $(1) | sed -r -n 's/^OUTPUT_$(2)[ ("]*([^")]*).*/\1/p'
-
-# Run the compiler and get the link script from the linker
-GET_LDS = $(CC) $(CFLAGS) $(LDFLAGS) -Wl,--verbose 2>&1
-
-$(obj)dt.o: $(DT_BIN)
- # We want the output format and arch.
- # We also hope to win a prize for ugliest Makefile / shell interaction
- # We look in the LDSCRIPT first.
- # Then try the linker which should give us the answer.
- # Then check it worked.
- [ -n "$(LDSCRIPT)" ] && \
- oformat=`$(call process_lds,cat $(LDSCRIPT),FORMAT)` && \
- oarch=`$(call process_lds,cat $(LDSCRIPT),ARCH)` ;\
- \
- [ -z $${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 := $(OBJS-y)
+ifneq ($(EXT_DTB),)
+DTB := $(EXT_DTB)
+else
+DTB := $(ARCH_PATH)/$(DEVICE_TREE).dtb
+dtb_depends += $(DTB:.dtb=.dts)
+endif
-OBJS := $(addprefix $(obj),$(COBJS))
+$(obj)/dt-spl.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
+ $(call if_changed,fdtgrep)
-binary: $(DT_BIN)
+$(obj)/dt.dtb: $(DTB) FORCE
+ $(call if_changed,shipped)
-$(LIB): $(OBJS) $(DTB)
- $(call cmd_link_o_target, $(OBJS))
+targets += dt.dtb dt-spl.dtb
-#########################################################################
+$(DTB): $(dtb_depends)
+ifeq ($(EXT_DTB),)
+ $(Q)$(MAKE) $(build)=$(ARCH_PATH) $@
+endif
+ $(Q)test -e $@ || ( \
+ echo >&2; \
+ echo >&2 "Device Tree Source is not correctly specified."; \
+ echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'"; \
+ echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument"; \
+ echo >&2; \
+ /bin/false)
+
+arch-dtbs:
+ $(Q)$(MAKE) $(build)=$(ARCH_PATH) dtbs
+
+.SECONDARY: $(obj)/dt.dtb.S $(obj)/dt-spl.dtb.S
+
+
+ifeq ($(CONFIG_SPL_BUILD),y)
+obj-$(CONFIG_OF_EMBED) := dt-spl.dtb.o
+# support "out-of-tree" build for dtb-spl
+$(obj)/dt-spl.dtb.o: $(obj)/dt-spl.dtb.S FORCE
+ $(call if_changed_dep,as_o_S)
+else
+obj-$(CONFIG_OF_EMBED) := dt.dtb.o
+endif
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
+dtbs: $(obj)/dt.dtb $(obj)/dt-spl.dtb
+ @:
-sinclude $(obj).depend
+clean-files := dt.dtb.S dt-spl.dtb.S
-#########################################################################
+# Let clean descend into dts directories
+subdir- += ../arch/arm/dts ../arch/microblaze/dts ../arch/mips/dts ../arch/sandbox/dts ../arch/x86/dts
projects / people / ms / u-boot.git / blobdiff