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# CREATE_SEQ is a recursive function to create sequence of numbers from 1 to 71# $(2) and assign the sequence to $(1) 72define CREATE_SEQ 73$(if $(word $(2), $($(1))),\ 74 $(eval $(1) += $(words $($(1))))\ 75 $(eval $(1) := $(filter-out 0,$($(1)))),\ 76 $(eval $(1) += $(words $($(1))))\ 77 $(call CREATE_SEQ,$(1),$(2))\ 78) 79endef 80 81# IMG_LINKERFILE defines the linker script corresponding to a BL stage 82# $(1) = BL stage (2, 30, 31, 32, 33) 83define IMG_LINKERFILE 84 ${BUILD_DIR}/bl$(1).ld 85endef 86 87# IMG_MAPFILE defines the output file describing the memory map corresponding 88# to a BL stage 89# $(1) = BL stage (2, 30, 31, 32, 33) 90define IMG_MAPFILE 91 ${BUILD_DIR}/bl$(1).map 92endef 93 94# IMG_ELF defines the elf file corresponding to a BL stage 95# $(1) = BL stage (2, 30, 31, 32, 33) 96define IMG_ELF 97 ${BUILD_DIR}/bl$(1).elf 98endef 99 100# IMG_DUMP defines the symbols dump file corresponding to a BL stage 101# $(1) = BL stage (2, 30, 31, 32, 33) 102define IMG_DUMP 103 ${BUILD_DIR}/bl$(1).dump 104endef 105 106# IMG_BIN defines the default image file corresponding to a BL stage 107# $(1) = BL stage (2, 30, 31, 32, 33) 108define IMG_BIN 109 ${BUILD_PLAT}/bl$(1).bin 110endef 111 112# TOOL_ADD_PAYLOAD appends the command line arguments required by fiptool to 113# package a new payload and/or by cert_create to generate certificate. 114# Optionally, it adds the dependency on this payload 115# $(1) = payload filename (i.e. bl31.bin) 116# $(2) = command line option for the specified payload (i.e. --soc-fw) 117# $(3) = tool target dependency (optional) (ex. build/fvp/release/bl31.bin) 118# $(4) = FIP prefix (optional) (if FWU_, target is fwu_fip instead of fip) 119define TOOL_ADD_PAYLOAD 120 $(4)FIP_ARGS += $(2) $(1) 121 $(if $(3),$(4)FIP_DEPS += $(3)) 122 $(4)CRT_ARGS += $(2) $(1) 123 $(if $(3),$(4)CRT_DEPS += $(3)) 124endef 125 126# TOOL_ADD_IMG_PAYLOAD works like TOOL_ADD_PAYLOAD, but applies image filters 127# before passing them to host tools if BL*_PRE_TOOL_FILTER is defined. 128# $(1) = image_type (scp_bl2, bl33, etc.) 129# $(2) = payload filepath (ex. build/fvp/release/bl31.bin) 130# $(3) = command line option for the specified payload (ex. --soc-fw) 131# $(4) = tool target dependency (optional) (ex. build/fvp/release/bl31.bin) 132# $(5) = FIP prefix (optional) (if FWU_, target is fwu_fip instead of fip) 133 134define TOOL_ADD_IMG_PAYLOAD 135 136$(eval PRE_TOOL_FILTER := $($(call uppercase,$(1))_PRE_TOOL_FILTER)) 137 138ifneq ($(PRE_TOOL_FILTER),) 139 140$(eval PROCESSED_PATH := $(BUILD_PLAT)/$(1).bin$($(PRE_TOOL_FILTER)_SUFFIX)) 141 142$(call $(PRE_TOOL_FILTER)_RULE,$(PROCESSED_PATH),$(2)) 143 144$(PROCESSED_PATH): $(4) 145 146$(call TOOL_ADD_PAYLOAD,$(PROCESSED_PATH),$(3),$(PROCESSED_PATH),$(5)) 147 148else 149$(call TOOL_ADD_PAYLOAD,$(2),$(3),$(4),$(5)) 150endif 151endef 152 153# CERT_ADD_CMD_OPT adds a new command line option to the cert_create invocation 154# $(1) = parameter filename 155# $(2) = cert_create command line option for the specified parameter 156# $(3) = FIP prefix (optional) (if FWU_, target is fwu_fip instead of fip) 157define CERT_ADD_CMD_OPT 158 $(3)CRT_ARGS += $(2) $(1) 159endef 160 161# TOOL_ADD_IMG allows the platform to specify an external image to be packed 162# in the FIP and/or for which certificate is generated. It also adds a 163# dependency on the image file, aborting the build if the file does not exist. 164# $(1) = image_type (scp_bl2, bl33, etc.) 165# $(2) = command line option for fiptool (--scp-fw, --nt-fw, etc) 166# $(3) = FIP prefix (optional) (if FWU_, target is fwu_fip instead of fip) 167# Example: 168# $(eval $(call TOOL_ADD_IMG,bl33,--nt-fw)) 169define TOOL_ADD_IMG 170 # Build option to specify the image filename (SCP_BL2, BL33, etc) 171 # This is the uppercase form of the first parameter 172 $(eval _V := $(call uppercase,$(1))) 173 174 $(3)CRT_DEPS += check_$(1) 175 $(3)FIP_DEPS += check_$(1) 176 $(call TOOL_ADD_IMG_PAYLOAD,$(1),$(value $(_V)),$(2),,$(3)) 177 178.PHONY: check_$(1) 179check_$(1): 180 $$(if $(value $(_V)),,$$(error "Platform '${PLAT}' requires $(_V). Please set $(_V) to point to the right file")) 181 $$(if $(wildcard $(value $(_V))),,$$(error '$(_V)=$(value $(_V))' was specified, but '$(value $(_V))' does not exist)) 182endef 183 184################################################################################ 185# Generic image processing filters 186################################################################################ 187 188# GZIP 189define GZIP_RULE 190$(1): $(2) 191 $(ECHO) " GZIP $$@" 192 $(Q)gzip -n -f -9 $$< --stdout > $$@ 193endef 194 195GZIP_SUFFIX := .gz 196 197################################################################################ 198# Auxiliary macros to build TF images from sources 199################################################################################ 200 201MAKE_DEP = -Wp,-MD,$(DEP) -MT $$@ -MP 202 203 204# MAKE_C_LIB builds a C source file and generates the dependency file 205# $(1) = output directory 206# $(2) = source file (%.c) 207# $(3) = library name 208define MAKE_C_LIB 209$(eval OBJ := $(1)/$(patsubst %.c,%.o,$(notdir $(2)))) 210$(eval DEP := $(patsubst %.o,%.d,$(OBJ))) 211 212$(OBJ): $(2) $(filter-out %.d,$(MAKEFILE_LIST)) | lib$(3)_dirs 213 $$(ECHO) " CC $$<" 214 $$(Q)$$(CC) $$(TF_CFLAGS) $$(CFLAGS) $(MAKE_DEP) -c $$< -o $$@ 215 216-include $(DEP) 217 218endef 219 220# MAKE_S_LIB builds an assembly source file and generates the dependency file 221# $(1) = output directory 222# $(2) = source file (%.S) 223# $(3) = library name 224define MAKE_S_LIB 225$(eval OBJ := $(1)/$(patsubst %.S,%.o,$(notdir $(2)))) 226$(eval DEP := $(patsubst %.o,%.d,$(OBJ))) 227 228$(OBJ): $(2) $(filter-out %.d,$(MAKEFILE_LIST)) | lib$(3)_dirs 229 $$(ECHO) " AS $$<" 230 $$(Q)$$(AS) $$(ASFLAGS) $(MAKE_DEP) -c $$< -o $$@ 231 232-include $(DEP) 233 234endef 235 236 237# MAKE_C builds a C source file and generates the dependency file 238# $(1) = output directory 239# $(2) = source file (%.c) 240# $(3) = BL stage (2, 2u, 30, 31, 32, 33) 241define MAKE_C 242 243$(eval OBJ := $(1)/$(patsubst %.c,%.o,$(notdir $(2)))) 244$(eval DEP := $(patsubst %.o,%.d,$(OBJ))) 245$(eval IMAGE := IMAGE_BL$(call uppercase,$(3))) 246$(eval BL_CFLAGS := $(BL$(call uppercase,$(3))_CFLAGS)) 247 248$(OBJ): $(2) $(filter-out %.d,$(MAKEFILE_LIST)) | bl$(3)_dirs 249 $$(ECHO) " CC $$<" 250 $$(Q)$$(CC) $$(LTO_CFLAGS) $$(TF_CFLAGS) $$(CFLAGS) $(BL_CFLAGS) -D$(IMAGE) $(MAKE_DEP) -c $$< -o $$@ 251 252-include $(DEP) 253 254endef 255 256 257# MAKE_S builds an assembly source file and generates the dependency file 258# $(1) = output directory 259# $(2) = assembly file (%.S) 260# $(3) = BL stage (2, 2u, 30, 31, 32, 33) 261define MAKE_S 262 263$(eval OBJ := $(1)/$(patsubst %.S,%.o,$(notdir $(2)))) 264$(eval DEP := $(patsubst %.o,%.d,$(OBJ))) 265$(eval IMAGE := IMAGE_BL$(call uppercase,$(3))) 266 267$(OBJ): $(2) $(filter-out %.d,$(MAKEFILE_LIST)) | bl$(3)_dirs 268 $$(ECHO) " AS $$<" 269 $$(Q)$$(AS) $$(ASFLAGS) -D$(IMAGE) $(MAKE_DEP) -c $$< -o $$@ 270 271-include $(DEP) 272 273endef 274 275 276# MAKE_LD generate the linker script using the C preprocessor 277# $(1) = output linker script 278# $(2) = input template 279# $(3) = BL stage (2, 2u, 30, 31, 32, 33) 280define MAKE_LD 281 282$(eval DEP := $(1).d) 283$(eval IMAGE := IMAGE_BL$(call uppercase,$(3))) 284 285$(1): $(2) $(filter-out %.d,$(MAKEFILE_LIST)) | bl$(3)_dirs 286 $$(ECHO) " PP $$<" 287 $$(Q)$$(CPP) $$(CPPFLAGS) $(TF_CFLAGS_$(ARCH)) -P -x assembler-with-cpp -D__LINKER__ $(MAKE_DEP) -D$(IMAGE) -o $$@ $$< 288 289-include $(DEP) 290 291endef 292 293# MAKE_LIB_OBJS builds both C and assembly source files 294# $(1) = output directory 295# $(2) = list of source files 296# $(3) = name of the library 297define MAKE_LIB_OBJS 298 $(eval C_OBJS := $(filter %.c,$(2))) 299 $(eval REMAIN := $(filter-out %.c,$(2))) 300 $(eval $(foreach obj,$(C_OBJS),$(call MAKE_C_LIB,$(1),$(obj),$(3)))) 301 302 $(eval S_OBJS := $(filter %.S,$(REMAIN))) 303 $(eval REMAIN := $(filter-out %.S,$(REMAIN))) 304 $(eval $(foreach obj,$(S_OBJS),$(call MAKE_S_LIB,$(1),$(obj),$(3)))) 305 306 $(and $(REMAIN),$(error Unexpected source files present: $(REMAIN))) 307endef 308 309 310# MAKE_OBJS builds both C and assembly source files 311# $(1) = output directory 312# $(2) = list of source files (both C and assembly) 313# $(3) = BL stage (2, 30, 31, 32, 33) 314define MAKE_OBJS 315 $(eval C_OBJS := $(filter %.c,$(2))) 316 $(eval REMAIN := $(filter-out %.c,$(2))) 317 $(eval $(foreach obj,$(C_OBJS),$(call MAKE_C,$(1),$(obj),$(3)))) 318 319 $(eval S_OBJS := $(filter %.S,$(REMAIN))) 320 $(eval REMAIN := $(filter-out %.S,$(REMAIN))) 321 $(eval $(foreach obj,$(S_OBJS),$(call MAKE_S,$(1),$(obj),$(3)))) 322 323 $(and $(REMAIN),$(error Unexpected source files present: $(REMAIN))) 324endef 325 326 327# NOTE: The line continuation '\' is required in the next define otherwise we 328# end up with a line-feed characer at the end of the last c filename. 329# Also bear this issue in mind if extending the list of supported filetypes. 330define SOURCES_TO_OBJS 331 $(notdir $(patsubst %.c,%.o,$(filter %.c,$(1)))) \ 332 $(notdir $(patsubst %.S,%.o,$(filter %.S,$(1)))) 333endef 334 335# Allow overriding the timestamp, for example for reproducible builds, or to 336# synchronize timestamps across multiple projects. 337# This must be set to a C string (including quotes where applicable). 338BUILD_MESSAGE_TIMESTAMP ?= __TIME__", "__DATE__ 339 340.PHONY: libraries 341 342# MAKE_LIB_DIRS macro defines the target for the directory where 343# libraries are created 344define MAKE_LIB_DIRS 345 $(eval LIB_DIR := ${BUILD_PLAT}/lib) 346 $(eval ROMLIB_DIR := ${BUILD_PLAT}/romlib) 347 $(eval LIBWRAPPER_DIR := ${BUILD_PLAT}/libwrapper) 348 $(eval $(call MAKE_PREREQ_DIR,${LIB_DIR},${BUILD_PLAT})) 349 $(eval $(call MAKE_PREREQ_DIR,${ROMLIB_DIR},${BUILD_PLAT})) 350 $(eval $(call MAKE_PREREQ_DIR,${LIBWRAPPER_DIR},${BUILD_PLAT})) 351endef 352 353# MAKE_LIB macro defines the targets and options to build each BL image. 354# Arguments: 355# $(1) = Library name 356define MAKE_LIB 357 $(eval BUILD_DIR := ${BUILD_PLAT}/lib$(1)) 358 $(eval LIB_DIR := ${BUILD_PLAT}/lib) 359 $(eval ROMLIB_DIR := ${BUILD_PLAT}/romlib) 360 $(eval SOURCES := $(LIB$(call uppercase,$(1))_SRCS)) 361 $(eval OBJS := $(addprefix $(BUILD_DIR)/,$(call SOURCES_TO_OBJS,$(SOURCES)))) 362 363$(eval $(call MAKE_PREREQ_DIR,${BUILD_DIR},${BUILD_PLAT})) 364$(eval $(call MAKE_LIB_OBJS,$(BUILD_DIR),$(SOURCES),$(1))) 365 366.PHONY : lib${1}_dirs 367lib${1}_dirs: | ${BUILD_DIR} ${LIB_DIR} ${ROMLIB_DIR} ${LIBWRAPPER_DIR} 368libraries: ${LIB_DIR}/lib$(1).a 369ifneq ($(findstring armlink,$(notdir $(LD))),) 370LDPATHS = --userlibpath=${LIB_DIR} 371LDLIBS += --library=$(1) 372else 373LDPATHS = -L${LIB_DIR} 374LDLIBS += -l$(1) 375endif 376 377ifeq ($(USE_ROMLIB),1) 378LIBWRAPPER = -lwrappers 379endif 380 381all: ${LIB_DIR}/lib$(1).a 382 383${LIB_DIR}/lib$(1).a: $(OBJS) 384 $$(ECHO) " AR $$@" 385 $$(Q)$$(AR) cr $$@ $$? 386endef 387 388# MAKE_BL macro defines the targets and options to build each BL image. 389# Arguments: 390# $(1) = BL stage (2, 2u, 30, 31, 32, 33) 391# $(2) = FIP command line option (if empty, image will not be included in the FIP) 392# $(3) = FIP prefix (optional) (if FWU_, target is fwu_fip instead of fip) 393define MAKE_BL 394 $(eval BUILD_DIR := ${BUILD_PLAT}/bl$(1)) 395 $(eval BL_SOURCES := $(BL$(call uppercase,$(1))_SOURCES)) 396 $(eval SOURCES := $(BL_SOURCES) $(BL_COMMON_SOURCES) $(PLAT_BL_COMMON_SOURCES)) 397 $(eval OBJS := $(addprefix $(BUILD_DIR)/,$(call SOURCES_TO_OBJS,$(SOURCES)))) 398 $(eval LINKERFILE := $(call IMG_LINKERFILE,$(1))) 399 $(eval MAPFILE := $(call IMG_MAPFILE,$(1))) 400 $(eval ELF := $(call IMG_ELF,$(1))) 401 $(eval DUMP := $(call IMG_DUMP,$(1))) 402 $(eval BIN := $(call IMG_BIN,$(1))) 403 $(eval BL_LINKERFILE := $(BL$(call uppercase,$(1))_LINKERFILE)) 404 $(eval BL_LIBS := $(BL$(call uppercase,$(1))_LIBS)) 405 # We use sort only to get a list of unique object directory names. 406 # ordering is not relevant but sort removes duplicates. 407 $(eval TEMP_OBJ_DIRS := $(sort $(dir ${OBJS} ${LINKERFILE}))) 408 # The $(dir ) function leaves a trailing / on the directory names 409 # Rip off the / to match directory names with make rule targets. 410 $(eval OBJ_DIRS := $(patsubst %/,%,$(TEMP_OBJ_DIRS))) 411 412# Create generators for object directory structure 413 414$(eval $(call MAKE_PREREQ_DIR,${BUILD_DIR},${BUILD_PLAT})) 415 416$(eval $(foreach objd,${OBJ_DIRS},$(call MAKE_PREREQ_DIR,${objd},${BUILD_DIR}))) 417 418.PHONY : bl${1}_dirs 419 420# We use order-only prerequisites to ensure that directories are created, 421# but do not cause re-builds every time a file is written. 422bl${1}_dirs: | ${OBJ_DIRS} 423 424$(eval $(call MAKE_OBJS,$(BUILD_DIR),$(SOURCES),$(1))) 425$(eval $(call MAKE_LD,$(LINKERFILE),$(BL_LINKERFILE),$(1))) 426$(eval BL_LDFLAGS := $(BL$(call uppercase,$(1))_LDFLAGS)) 427 428ifeq ($(USE_ROMLIB),1) 429$(ELF): romlib.bin 430endif 431 432$(ELF): $(OBJS) $(LINKERFILE) | bl$(1)_dirs libraries $(BL_LIBS) 433 $$(ECHO) " LD $$@" 434ifdef MAKE_BUILD_STRINGS 435 $(call MAKE_BUILD_STRINGS, $(BUILD_DIR)/build_message.o) 436else 437 @echo 'const char build_message[] = "Built : "$(BUILD_MESSAGE_TIMESTAMP); \ 438 const char version_string[] = "${VERSION_STRING}";' | \ 439 $$(CC) $$(TF_CFLAGS) $$(CFLAGS) -xc -c - -o $(BUILD_DIR)/build_message.o 440endif 441ifneq ($(findstring armlink,$(notdir $(LD))),) 442 $$(Q)$$(LD) -o $$@ $$(TF_LDFLAGS) $$(LDFLAGS) $(BL_LDFLAGS) --entry=bl${1}_entrypoint \ 443 --predefine="-D__LINKER__=$(__LINKER__)" \ 444 --predefine="-DTF_CFLAGS=$(TF_CFLAGS)" \ 445 --map --list="$(MAPFILE)" --scatter=${PLAT_DIR}/scat/bl${1}.scat \ 446 $(LDPATHS) $(LIBWRAPPER) $(LDLIBS) $(BL_LIBS) \ 447 $(BUILD_DIR)/build_message.o $(OBJS) 448else ifneq ($(findstring gcc,$(notdir $(LD))),) 449 $$(Q)$$(LD) -o $$@ $$(TF_LDFLAGS) $$(LDFLAGS) -Wl,-Map=$(MAPFILE) \ 450 -Wl,-T$(LINKERFILE) $(BUILD_DIR)/build_message.o \ 451 $(OBJS) $(LDPATHS) $(LIBWRAPPER) $(LDLIBS) $(BL_LIBS) 452else 453 $$(Q)$$(LD) -o $$@ $$(TF_LDFLAGS) $$(LDFLAGS) $(BL_LDFLAGS) -Map=$(MAPFILE) \ 454 --script $(LINKERFILE) $(BUILD_DIR)/build_message.o \ 455 $(OBJS) $(LDPATHS) $(LIBWRAPPER) $(LDLIBS) $(BL_LIBS) 456endif 457ifeq ($(DISABLE_BIN_GENERATION),1) 458 @${ECHO_BLANK_LINE} 459 @echo "Built $$@ successfully" 460 @${ECHO_BLANK_LINE} 461endif 462 463$(DUMP): $(ELF) 464 $${ECHO} " OD $$@" 465 $${Q}$${OD} -dx $$< > $$@ 466 467$(BIN): $(ELF) 468 $${ECHO} " BIN $$@" 469 $$(Q)$$(OC) -O binary $$< $$@ 470 @${ECHO_BLANK_LINE} 471 @echo "Built $$@ successfully" 472 @${ECHO_BLANK_LINE} 473 474.PHONY: bl$(1) 475ifeq ($(DISABLE_BIN_GENERATION),1) 476bl$(1): $(ELF) $(DUMP) 477else 478bl$(1): $(BIN) $(DUMP) 479endif 480 481all: bl$(1) 482 483$(if $(2),$(call TOOL_ADD_IMG_PAYLOAD,bl$(1),$(BIN),--$(2),$(BIN),$(3))) 484 485endef 486 487# Convert device tree source file names to matching blobs 488# $(1) = input dts 489define SOURCES_TO_DTBS 490 $(notdir $(patsubst %.dts,%.dtb,$(filter %.dts,$(1)))) 491endef 492 493# MAKE_FDT_DIRS macro creates the prerequisite directories that host the 494# FDT binaries 495# $(1) = output directory 496# $(2) = input dts 497define MAKE_FDT_DIRS 498 $(eval DTBS := $(addprefix $(1)/,$(call SOURCES_TO_DTBS,$(2)))) 499 $(eval TEMP_DTB_DIRS := $(sort $(dir ${DTBS}))) 500 # The $(dir ) function leaves a trailing / on the directory names 501 # Rip off the / to match directory names with make rule targets. 502 $(eval DTB_DIRS := $(patsubst %/,%,$(TEMP_DTB_DIRS))) 503 504$(eval $(foreach objd,${DTB_DIRS},$(call MAKE_PREREQ_DIR,${objd},${BUILD_DIR}))) 505 506fdt_dirs: ${DTB_DIRS} 507endef 508 509# MAKE_DTB generate the Flattened device tree binary 510# $(1) = output directory 511# $(2) = input dts 512define MAKE_DTB 513 514# List of DTB file(s) to generate, based on DTS file basename list 515$(eval DOBJ := $(addprefix $(1)/,$(call SOURCES_TO_DTBS,$(2)))) 516# List of the pre-compiled DTS file(s) 517$(eval DPRE := $(addprefix $(1)/,$(patsubst %.dts,%.pre.dts,$(notdir $(2))))) 518# Dependencies of the pre-compiled DTS file(s) on its source and included files 519$(eval DTSDEP := $(patsubst %.dtb,%.o.d,$(DOBJ))) 520# Dependencies of the DT compilation on its pre-compiled DTS 521$(eval DTBDEP := $(patsubst %.dtb,%.d,$(DOBJ))) 522 523$(DOBJ): $(2) $(filter-out %.d,$(MAKEFILE_LIST)) | fdt_dirs 524 $${ECHO} " CPP $$<" 525 $(eval DTBS := $(addprefix $(1)/,$(call SOURCES_TO_DTBS,$(2)))) 526 $$(Q)$$(PP) $$(DTC_CPPFLAGS) -MT $(DTBS) -MMD -MF $(DTSDEP) -o $(DPRE) $$< 527 $${ECHO} " DTC $$<" 528 $$(Q)$$(DTC) $$(DTC_FLAGS) -d $(DTBDEP) -o $$@ $(DPRE) 529 530-include $(DTBDEP) 531-include $(DTSDEP) 532 533endef 534 535# MAKE_DTBS builds flattened device tree sources 536# $(1) = output directory 537# $(2) = list of flattened device tree source files 538define MAKE_DTBS 539 $(eval DOBJS := $(filter %.dts,$(2))) 540 $(eval REMAIN := $(filter-out %.dts,$(2))) 541 $(and $(REMAIN),$(error FDT_SOURCES contain non-DTS files: $(REMAIN))) 542 $(eval $(foreach obj,$(DOBJS),$(call MAKE_DTB,$(1),$(obj)))) 543 544 $(eval $(call MAKE_FDT_DIRS,$(1),$(2))) 545 546dtbs: $(DTBS) 547all: dtbs 548endef 549