1# 2# Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved. 3# 4# SPDX-License-Identifier: BSD-3-Clause 5# 6 7# Report an error if the eval make function is not available. 8$(eval eval_available := T) 9ifneq (${eval_available},T) 10 $(error This makefile only works with a Make program that supports $$(eval)) 11endif 12 13# Some utility macros for manipulating awkward (whitespace) characters. 14blank := 15space :=${blank} ${blank} 16 17# A user defined function to recursively search for a filename below a directory 18# $1 is the directory root of the recursive search (blank for current directory). 19# $2 is the file name to search for. 20define rwildcard 21$(strip $(foreach d,$(wildcard ${1}*),$(call rwildcard,${d}/,${2}) $(filter $(subst *,%,%${2}),${d}))) 22endef 23 24# This table is used in converting lower case to upper case. 25uppercase_table:=a,A b,B c,C d,D e,E f,F g,G h,H i,I j,J k,K l,L m,M n,N o,O p,P q,Q r,R s,S t,T u,U v,V w,W x,X y,Y z,Z 26 27# Internal macro used for converting lower case to upper case. 28# $(1) = upper case table 29# $(2) = String to convert 30define uppercase_internal 31$(if $(1),$$(subst $(firstword $(1)),$(call uppercase_internal,$(wordlist 2,$(words $(1)),$(1)),$(2))),$(2)) 32endef 33 34# A macro for converting a string to upper case 35# $(1) = String to convert 36define uppercase 37$(eval uppercase_result:=$(call uppercase_internal,$(uppercase_table),$(1)))$(uppercase_result) 38endef 39 40# Convenience function for adding build definitions 41# $(eval $(call add_define,FOO)) will have: 42# -DFOO if $(FOO) is empty; -DFOO=$(FOO) otherwise 43define add_define 44 DEFINES += -D$(1)$(if $(value $(1)),=$(value $(1)),) 45endef 46 47# Convenience function for adding build definitions 48# $(eval $(call add_define_val,FOO,BAR)) will have: 49# -DFOO=BAR 50define add_define_val 51 DEFINES += -D$(1)=$(2) 52endef 53 54# Convenience function for verifying option has a boolean value 55# $(eval $(call assert_boolean,FOO)) will assert FOO is 0 or 1 56define assert_boolean 57 $(if $(filter-out 0 1,$($1)),$(error $1 must be boolean)) 58endef 59 600-9 := 0 1 2 3 4 5 6 7 8 9 61 62# Function to verify that a given option $(1) contains a numeric value 63define assert_numeric 64$(if $($(1)),,$(error $(1) must not be empty)) 65$(eval __numeric := $($(1))) 66$(foreach d,$(0-9),$(eval __numeric := $(subst $(d),,$(__numeric)))) 67$(if $(__numeric),$(error $(1) must be numeric)) 68endef 69 70# IMG_LINKERFILE defines the linker script corresponding to a BL stage 71# $(1) = BL stage (2, 30, 31, 32, 33) 72define IMG_LINKERFILE 73 ${BUILD_DIR}/bl$(1).ld 74endef 75 76# IMG_MAPFILE defines the output file describing the memory map corresponding 77# to a BL stage 78# $(1) = BL stage (2, 30, 31, 32, 33) 79define IMG_MAPFILE 80 ${BUILD_DIR}/bl$(1).map 81endef 82 83# IMG_ELF defines the elf file corresponding to a BL stage 84# $(1) = BL stage (2, 30, 31, 32, 33) 85define IMG_ELF 86 ${BUILD_DIR}/bl$(1).elf 87endef 88 89# IMG_DUMP defines the symbols dump file corresponding to a BL stage 90# $(1) = BL stage (2, 30, 31, 32, 33) 91define IMG_DUMP 92 ${BUILD_DIR}/bl$(1).dump 93endef 94 95# IMG_BIN defines the default image file corresponding to a BL stage 96# $(1) = BL stage (2, 30, 31, 32, 33) 97define IMG_BIN 98 ${BUILD_PLAT}/bl$(1).bin 99endef 100 101# TOOL_ADD_PAYLOAD appends the command line arguments required by fiptool to 102# package a new payload and/or by cert_create to generate certificate. 103# Optionally, it adds the dependency on this payload 104# $(1) = payload filename (i.e. bl31.bin) 105# $(2) = command line option for the specified payload (i.e. --soc-fw) 106# $(3) = tool target dependency (optional) (ex. build/fvp/release/bl31.bin) 107# $(4) = FIP prefix (optional) (if FWU_, target is fwu_fip instead of fip) 108define TOOL_ADD_PAYLOAD 109 $(4)FIP_ARGS += $(2) $(1) 110 $(if $(3),$(4)FIP_DEPS += $(3)) 111 $(4)CRT_ARGS += $(2) $(1) 112 $(if $(3),$(4)CRT_DEPS += $(3)) 113endef 114 115# TOOL_ADD_IMG_PAYLOAD works like TOOL_ADD_PAYLOAD, but applies image filters 116# before passing them to host tools if BL*_PRE_TOOL_FILTER is defined. 117# $(1) = image_type (scp_bl2, bl33, etc.) 118# $(2) = payload filepath (ex. build/fvp/release/bl31.bin) 119# $(3) = command line option for the specified payload (ex. --soc-fw) 120# $(4) = tool target dependency (optional) (ex. build/fvp/release/bl31.bin) 121# $(5) = FIP prefix (optional) (if FWU_, target is fwu_fip instead of fip) 122 123define TOOL_ADD_IMG_PAYLOAD 124 125$(eval PRE_TOOL_FILTER := $($(call uppercase,$(1))_PRE_TOOL_FILTER)) 126 127ifneq ($(PRE_TOOL_FILTER),) 128 129$(eval PROCESSED_PATH := $(BUILD_PLAT)/$(1).bin$($(PRE_TOOL_FILTER)_SUFFIX)) 130 131$(call $(PRE_TOOL_FILTER)_RULE,$(PROCESSED_PATH),$(2)) 132 133$(PROCESSED_PATH): $(4) 134 135$(call TOOL_ADD_PAYLOAD,$(PROCESSED_PATH),$(3),$(PROCESSED_PATH),$(5)) 136 137else 138$(call TOOL_ADD_PAYLOAD,$(2),$(3),$(4),$(5)) 139endif 140endef 141 142# CERT_ADD_CMD_OPT adds a new command line option to the cert_create invocation 143# $(1) = parameter filename 144# $(2) = cert_create command line option for the specified parameter 145# $(3) = FIP prefix (optional) (if FWU_, target is fwu_fip instead of fip) 146define CERT_ADD_CMD_OPT 147 $(3)CRT_ARGS += $(2) $(1) 148endef 149 150# TOOL_ADD_IMG allows the platform to specify an external image to be packed 151# in the FIP and/or for which certificate is generated. It also adds a 152# dependency on the image file, aborting the build if the file does not exist. 153# $(1) = image_type (scp_bl2, bl33, etc.) 154# $(2) = command line option for fiptool (--scp-fw, --nt-fw, etc) 155# $(3) = FIP prefix (optional) (if FWU_, target is fwu_fip instead of fip) 156# Example: 157# $(eval $(call TOOL_ADD_IMG,bl33,--nt-fw)) 158define TOOL_ADD_IMG 159 # Build option to specify the image filename (SCP_BL2, BL33, etc) 160 # This is the uppercase form of the first parameter 161 $(eval _V := $(call uppercase,$(1))) 162 163 $(3)CRT_DEPS += check_$(1) 164 $(3)FIP_DEPS += check_$(1) 165 $(call TOOL_ADD_IMG_PAYLOAD,$(1),$(value $(_V)),$(2),,$(3)) 166 167.PHONY: check_$(1) 168check_$(1): 169 $$(if $(value $(_V)),,$$(error "Platform '${PLAT}' requires $(_V). Please set $(_V) to point to the right file")) 170 $$(if $(wildcard $(value $(_V))),,$$(error '$(_V)=$(value $(_V))' was specified, but '$(value $(_V))' does not exist)) 171endef 172 173################################################################################ 174# Generic image processing filters 175################################################################################ 176 177# GZIP 178define GZIP_RULE 179$(1): $(2) 180 $(ECHO) " GZIP $$@" 181 $(Q)gzip -n -f -9 $$< --stdout > $$@ 182endef 183 184GZIP_SUFFIX := .gz 185 186################################################################################ 187# Auxiliary macros to build TF images from sources 188################################################################################ 189 190MAKE_DEP = -Wp,-MD,$(DEP) -MT $$@ -MP 191 192 193# MAKE_C_LIB builds a C source file and generates the dependency file 194# $(1) = output directory 195# $(2) = source file (%.c) 196# $(3) = library name 197define MAKE_C_LIB 198$(eval OBJ := $(1)/$(patsubst %.c,%.o,$(notdir $(2)))) 199$(eval DEP := $(patsubst %.o,%.d,$(OBJ))) 200 201$(OBJ): $(2) $(filter-out %.d,$(MAKEFILE_LIST)) | lib$(3)_dirs 202 $$(ECHO) " CC $$<" 203 $$(Q)$$(CC) $$(TF_CFLAGS) $$(CFLAGS) $(MAKE_DEP) -c $$< -o $$@ 204 205-include $(DEP) 206 207endef 208 209# MAKE_S_LIB builds an assembly source file and generates the dependency file 210# $(1) = output directory 211# $(2) = source file (%.S) 212# $(3) = library name 213define MAKE_S_LIB 214$(eval OBJ := $(1)/$(patsubst %.S,%.o,$(notdir $(2)))) 215$(eval DEP := $(patsubst %.o,%.d,$(OBJ))) 216 217$(OBJ): $(2) $(filter-out %.d,$(MAKEFILE_LIST)) | lib$(3)_dirs 218 $$(ECHO) " AS $$<" 219 $$(Q)$$(AS) $$(ASFLAGS) $(MAKE_DEP) -c $$< -o $$@ 220 221-include $(DEP) 222 223endef 224 225 226# MAKE_C builds a C source file and generates the dependency file 227# $(1) = output directory 228# $(2) = source file (%.c) 229# $(3) = BL stage (2, 2u, 30, 31, 32, 33) 230define MAKE_C 231 232$(eval OBJ := $(1)/$(patsubst %.c,%.o,$(notdir $(2)))) 233$(eval DEP := $(patsubst %.o,%.d,$(OBJ))) 234$(eval IMAGE := IMAGE_BL$(call uppercase,$(3))) 235$(eval BL_CFLAGS := $(BL$(call uppercase,$(3))_CFLAGS)) 236 237$(OBJ): $(2) $(filter-out %.d,$(MAKEFILE_LIST)) | bl$(3)_dirs 238 $$(ECHO) " CC $$<" 239 $$(Q)$$(CC) $$(LTO_CFLAGS) $$(TF_CFLAGS) $$(CFLAGS) $(BL_CFLAGS) -D$(IMAGE) $(MAKE_DEP) -c $$< -o $$@ 240 241-include $(DEP) 242 243endef 244 245 246# MAKE_S builds an assembly source file and generates the dependency file 247# $(1) = output directory 248# $(2) = assembly file (%.S) 249# $(3) = BL stage (2, 2u, 30, 31, 32, 33) 250define MAKE_S 251 252$(eval OBJ := $(1)/$(patsubst %.S,%.o,$(notdir $(2)))) 253$(eval DEP := $(patsubst %.o,%.d,$(OBJ))) 254$(eval IMAGE := IMAGE_BL$(call uppercase,$(3))) 255 256$(OBJ): $(2) $(filter-out %.d,$(MAKEFILE_LIST)) | bl$(3)_dirs 257 $$(ECHO) " AS $$<" 258 $$(Q)$$(AS) $$(ASFLAGS) -D$(IMAGE) $(MAKE_DEP) -c $$< -o $$@ 259 260-include $(DEP) 261 262endef 263 264 265# MAKE_LD generate the linker script using the C preprocessor 266# $(1) = output linker script 267# $(2) = input template 268# $(3) = BL stage (2, 2u, 30, 31, 32, 33) 269define MAKE_LD 270 271$(eval DEP := $(1).d) 272$(eval IMAGE := IMAGE_BL$(call uppercase,$(3))) 273 274$(1): $(2) $(filter-out %.d,$(MAKEFILE_LIST)) | bl$(3)_dirs 275 $$(ECHO) " PP $$<" 276 $$(Q)$$(CPP) $$(CPPFLAGS) $(TF_CFLAGS_$(ARCH)) -P -x assembler-with-cpp -D__LINKER__ $(MAKE_DEP) -D$(IMAGE) -o $$@ $$< 277 278-include $(DEP) 279 280endef 281 282# MAKE_LIB_OBJS builds both C and assembly source files 283# $(1) = output directory 284# $(2) = list of source files 285# $(3) = name of the library 286define MAKE_LIB_OBJS 287 $(eval C_OBJS := $(filter %.c,$(2))) 288 $(eval REMAIN := $(filter-out %.c,$(2))) 289 $(eval $(foreach obj,$(C_OBJS),$(call MAKE_C_LIB,$(1),$(obj),$(3)))) 290 291 $(eval S_OBJS := $(filter %.S,$(REMAIN))) 292 $(eval REMAIN := $(filter-out %.S,$(REMAIN))) 293 $(eval $(foreach obj,$(S_OBJS),$(call MAKE_S_LIB,$(1),$(obj),$(3)))) 294 295 $(and $(REMAIN),$(error Unexpected source files present: $(REMAIN))) 296endef 297 298 299# MAKE_OBJS builds both C and assembly source files 300# $(1) = output directory 301# $(2) = list of source files (both C and assembly) 302# $(3) = BL stage (2, 30, 31, 32, 33) 303define MAKE_OBJS 304 $(eval C_OBJS := $(filter %.c,$(2))) 305 $(eval REMAIN := $(filter-out %.c,$(2))) 306 $(eval $(foreach obj,$(C_OBJS),$(call MAKE_C,$(1),$(obj),$(3)))) 307 308 $(eval S_OBJS := $(filter %.S,$(REMAIN))) 309 $(eval REMAIN := $(filter-out %.S,$(REMAIN))) 310 $(eval $(foreach obj,$(S_OBJS),$(call MAKE_S,$(1),$(obj),$(3)))) 311 312 $(and $(REMAIN),$(error Unexpected source files present: $(REMAIN))) 313endef 314 315 316# NOTE: The line continuation '\' is required in the next define otherwise we 317# end up with a line-feed characer at the end of the last c filename. 318# Also bear this issue in mind if extending the list of supported filetypes. 319define SOURCES_TO_OBJS 320 $(notdir $(patsubst %.c,%.o,$(filter %.c,$(1)))) \ 321 $(notdir $(patsubst %.S,%.o,$(filter %.S,$(1)))) 322endef 323 324# Allow overriding the timestamp, for example for reproducible builds, or to 325# synchronize timestamps across multiple projects. 326# This must be set to a C string (including quotes where applicable). 327BUILD_MESSAGE_TIMESTAMP ?= __TIME__", "__DATE__ 328 329.PHONY: libraries 330 331# MAKE_LIB_DIRS macro defines the target for the directory where 332# libraries are created 333define MAKE_LIB_DIRS 334 $(eval LIB_DIR := ${BUILD_PLAT}/lib) 335 $(eval ROMLIB_DIR := ${BUILD_PLAT}/romlib) 336 $(eval LIBWRAPPER_DIR := ${BUILD_PLAT}/libwrapper) 337 $(eval $(call MAKE_PREREQ_DIR,${LIB_DIR},${BUILD_PLAT})) 338 $(eval $(call MAKE_PREREQ_DIR,${ROMLIB_DIR},${BUILD_PLAT})) 339 $(eval $(call MAKE_PREREQ_DIR,${LIBWRAPPER_DIR},${BUILD_PLAT})) 340endef 341 342# MAKE_LIB macro defines the targets and options to build each BL image. 343# Arguments: 344# $(1) = Library name 345define MAKE_LIB 346 $(eval BUILD_DIR := ${BUILD_PLAT}/lib$(1)) 347 $(eval LIB_DIR := ${BUILD_PLAT}/lib) 348 $(eval ROMLIB_DIR := ${BUILD_PLAT}/romlib) 349 $(eval SOURCES := $(LIB$(call uppercase,$(1))_SRCS)) 350 $(eval OBJS := $(addprefix $(BUILD_DIR)/,$(call SOURCES_TO_OBJS,$(SOURCES)))) 351 352$(eval $(call MAKE_PREREQ_DIR,${BUILD_DIR},${BUILD_PLAT})) 353$(eval $(call MAKE_LIB_OBJS,$(BUILD_DIR),$(SOURCES),$(1))) 354 355.PHONY : lib${1}_dirs 356lib${1}_dirs: | ${BUILD_DIR} ${LIB_DIR} ${ROMLIB_DIR} ${LIBWRAPPER_DIR} 357libraries: ${LIB_DIR}/lib$(1).a 358ifneq ($(findstring armlink,$(notdir $(LD))),) 359LDPATHS = --userlibpath=${LIB_DIR} 360LDLIBS += --library=$(1) 361else 362LDPATHS = -L${LIB_DIR} 363LDLIBS += -l$(1) 364endif 365 366ifeq ($(USE_ROMLIB),1) 367LIBWRAPPER = -lwrappers 368endif 369 370all: ${LIB_DIR}/lib$(1).a 371 372${LIB_DIR}/lib$(1).a: $(OBJS) 373 $$(ECHO) " AR $$@" 374 $$(Q)$$(AR) cr $$@ $$? 375endef 376 377# MAKE_BL macro defines the targets and options to build each BL image. 378# Arguments: 379# $(1) = BL stage (2, 2u, 30, 31, 32, 33) 380# $(2) = FIP command line option (if empty, image will not be included in the FIP) 381# $(3) = FIP prefix (optional) (if FWU_, target is fwu_fip instead of fip) 382define MAKE_BL 383 $(eval BUILD_DIR := ${BUILD_PLAT}/bl$(1)) 384 $(eval BL_SOURCES := $(BL$(call uppercase,$(1))_SOURCES)) 385 $(eval SOURCES := $(BL_SOURCES) $(BL_COMMON_SOURCES) $(PLAT_BL_COMMON_SOURCES)) 386 $(eval OBJS := $(addprefix $(BUILD_DIR)/,$(call SOURCES_TO_OBJS,$(SOURCES)))) 387 $(eval LINKERFILE := $(call IMG_LINKERFILE,$(1))) 388 $(eval MAPFILE := $(call IMG_MAPFILE,$(1))) 389 $(eval ELF := $(call IMG_ELF,$(1))) 390 $(eval DUMP := $(call IMG_DUMP,$(1))) 391 $(eval BIN := $(call IMG_BIN,$(1))) 392 $(eval BL_LINKERFILE := $(BL$(call uppercase,$(1))_LINKERFILE)) 393 $(eval BL_LIBS := $(BL$(call uppercase,$(1))_LIBS)) 394 # We use sort only to get a list of unique object directory names. 395 # ordering is not relevant but sort removes duplicates. 396 $(eval TEMP_OBJ_DIRS := $(sort $(dir ${OBJS} ${LINKERFILE}))) 397 # The $(dir ) function leaves a trailing / on the directory names 398 # Rip off the / to match directory names with make rule targets. 399 $(eval OBJ_DIRS := $(patsubst %/,%,$(TEMP_OBJ_DIRS))) 400 401# Create generators for object directory structure 402 403$(eval $(call MAKE_PREREQ_DIR,${BUILD_DIR},${BUILD_PLAT})) 404 405$(eval $(foreach objd,${OBJ_DIRS},$(call MAKE_PREREQ_DIR,${objd},${BUILD_DIR}))) 406 407.PHONY : bl${1}_dirs 408 409# We use order-only prerequisites to ensure that directories are created, 410# but do not cause re-builds every time a file is written. 411bl${1}_dirs: | ${OBJ_DIRS} 412 413$(eval $(call MAKE_OBJS,$(BUILD_DIR),$(SOURCES),$(1))) 414$(eval $(call MAKE_LD,$(LINKERFILE),$(BL_LINKERFILE),$(1))) 415$(eval BL_LDFLAGS := $(BL$(call uppercase,$(1))_LDFLAGS)) 416 417ifeq ($(USE_ROMLIB),1) 418$(ELF): romlib.bin 419endif 420 421$(ELF): $(OBJS) $(LINKERFILE) | bl$(1)_dirs libraries $(BL_LIBS) 422 $$(ECHO) " LD $$@" 423ifdef MAKE_BUILD_STRINGS 424 $(call MAKE_BUILD_STRINGS, $(BUILD_DIR)/build_message.o) 425else 426 @echo 'const char build_message[] = "Built : "$(BUILD_MESSAGE_TIMESTAMP); \ 427 const char version_string[] = "${VERSION_STRING}";' | \ 428 $$(CC) $$(TF_CFLAGS) $$(CFLAGS) -xc -c - -o $(BUILD_DIR)/build_message.o 429endif 430ifneq ($(findstring armlink,$(notdir $(LD))),) 431 $$(Q)$$(LD) -o $$@ $$(TF_LDFLAGS) $$(LDFLAGS) $(BL_LDFLAGS) --entry=bl${1}_entrypoint \ 432 --predefine="-D__LINKER__=$(__LINKER__)" \ 433 --predefine="-DTF_CFLAGS=$(TF_CFLAGS)" \ 434 --map --list="$(MAPFILE)" --scatter=${PLAT_DIR}/scat/bl${1}.scat \ 435 $(LDPATHS) $(LIBWRAPPER) $(LDLIBS) $(BL_LIBS) \ 436 $(BUILD_DIR)/build_message.o $(OBJS) 437else ifneq ($(findstring gcc,$(notdir $(LD))),) 438 $$(Q)$$(LD) -o $$@ $$(TF_LDFLAGS) $$(LDFLAGS) -Wl,-Map=$(MAPFILE) \ 439 -Wl,-T$(LINKERFILE) $(BUILD_DIR)/build_message.o \ 440 $(OBJS) $(LDPATHS) $(LIBWRAPPER) $(LDLIBS) $(BL_LIBS) 441else 442 $$(Q)$$(LD) -o $$@ $$(TF_LDFLAGS) $$(LDFLAGS) $(BL_LDFLAGS) -Map=$(MAPFILE) \ 443 --script $(LINKERFILE) $(BUILD_DIR)/build_message.o \ 444 $(OBJS) $(LDPATHS) $(LIBWRAPPER) $(LDLIBS) $(BL_LIBS) 445endif 446ifeq ($(DISABLE_BIN_GENERATION),1) 447 @${ECHO_BLANK_LINE} 448 @echo "Built $$@ successfully" 449 @${ECHO_BLANK_LINE} 450endif 451 452$(DUMP): $(ELF) 453 $${ECHO} " OD $$@" 454 $${Q}$${OD} -dx $$< > $$@ 455 456$(BIN): $(ELF) 457 $${ECHO} " BIN $$@" 458 $$(Q)$$(OC) -O binary $$< $$@ 459 @${ECHO_BLANK_LINE} 460 @echo "Built $$@ successfully" 461 @${ECHO_BLANK_LINE} 462 463.PHONY: bl$(1) 464ifeq ($(DISABLE_BIN_GENERATION),1) 465bl$(1): $(ELF) $(DUMP) 466else 467bl$(1): $(BIN) $(DUMP) 468endif 469 470all: bl$(1) 471 472$(if $(2),$(call TOOL_ADD_IMG_PAYLOAD,bl$(1),$(BIN),--$(2),$(BIN),$(3))) 473 474endef 475 476# Convert device tree source file names to matching blobs 477# $(1) = input dts 478define SOURCES_TO_DTBS 479 $(notdir $(patsubst %.dts,%.dtb,$(filter %.dts,$(1)))) 480endef 481 482# MAKE_FDT_DIRS macro creates the prerequisite directories that host the 483# FDT binaries 484# $(1) = output directory 485# $(2) = input dts 486define MAKE_FDT_DIRS 487 $(eval DTBS := $(addprefix $(1)/,$(call SOURCES_TO_DTBS,$(2)))) 488 $(eval TEMP_DTB_DIRS := $(sort $(dir ${DTBS}))) 489 # The $(dir ) function leaves a trailing / on the directory names 490 # Rip off the / to match directory names with make rule targets. 491 $(eval DTB_DIRS := $(patsubst %/,%,$(TEMP_DTB_DIRS))) 492 493$(eval $(foreach objd,${DTB_DIRS},$(call MAKE_PREREQ_DIR,${objd},${BUILD_DIR}))) 494 495fdt_dirs: ${DTB_DIRS} 496endef 497 498# MAKE_DTB generate the Flattened device tree binary 499# $(1) = output directory 500# $(2) = input dts 501define MAKE_DTB 502 503# List of DTB file(s) to generate, based on DTS file basename list 504$(eval DOBJ := $(addprefix $(1)/,$(call SOURCES_TO_DTBS,$(2)))) 505# List of the pre-compiled DTS file(s) 506$(eval DPRE := $(addprefix $(1)/,$(patsubst %.dts,%.pre.dts,$(notdir $(2))))) 507# Dependencies of the pre-compiled DTS file(s) on its source and included files 508$(eval DTSDEP := $(patsubst %.dtb,%.o.d,$(DOBJ))) 509# Dependencies of the DT compilation on its pre-compiled DTS 510$(eval DTBDEP := $(patsubst %.dtb,%.d,$(DOBJ))) 511 512$(DOBJ): $(2) $(filter-out %.d,$(MAKEFILE_LIST)) | fdt_dirs 513 $${ECHO} " CPP $$<" 514 $(eval DTBS := $(addprefix $(1)/,$(call SOURCES_TO_DTBS,$(2)))) 515 $$(Q)$$(PP) $$(DTC_CPPFLAGS) -MT $(DTBS) -MMD -MF $(DTSDEP) -o $(DPRE) $$< 516 $${ECHO} " DTC $$<" 517 $$(Q)$$(DTC) $$(DTC_FLAGS) -d $(DTBDEP) -o $$@ $(DPRE) 518 519-include $(DTBDEP) 520-include $(DTSDEP) 521 522endef 523 524# MAKE_DTBS builds flattened device tree sources 525# $(1) = output directory 526# $(2) = list of flattened device tree source files 527define MAKE_DTBS 528 $(eval DOBJS := $(filter %.dts,$(2))) 529 $(eval REMAIN := $(filter-out %.dts,$(2))) 530 $(and $(REMAIN),$(error FDT_SOURCES contain non-DTS files: $(REMAIN))) 531 $(eval $(foreach obj,$(DOBJS),$(call MAKE_DTB,$(1),$(obj)))) 532 533 $(eval $(call MAKE_FDT_DIRS,$(1),$(2))) 534 535dtbs: $(DTBS) 536all: dtbs 537endef 538