Makefile

   1 #
   2 # Copyright (c) 2013-2019, ARM Limited and Contributors. All rights reserved.
   3 #
   4 # SPDX-License-Identifier: BSD-3-Clause
   5 #
   6
   7 #
   8 # Trusted Firmware Version
   9 #
  10 VERSION_MAJOR                   := 2
  11 VERSION_MINOR                   := 1
  12
  13 # Default goal is build all images
  14 .DEFAULT_GOAL                   := all
  15
  16 # Avoid any implicit propagation of command line variable definitions to
  17 # sub-Makefiles, like CFLAGS that we reserved for the firmware images'
  18 # usage. Other command line options like "-s" are still propagated as usual.
  19 MAKEOVERRIDES =
  20
  21 MAKE_HELPERS_DIRECTORY := make_helpers/
  22 include ${MAKE_HELPERS_DIRECTORY}build_macros.mk
  23 include ${MAKE_HELPERS_DIRECTORY}build_env.mk
  24
  25 ################################################################################
  26 # Default values for build configurations, and their dependencies
  27 ################################################################################
  28
  29 include ${MAKE_HELPERS_DIRECTORY}defaults.mk
  30
  31 # Assertions enabled for DEBUG builds by default
  32 ENABLE_ASSERTIONS               := ${DEBUG}
  33 ENABLE_PMF                      := ${ENABLE_RUNTIME_INSTRUMENTATION}
  34 PLAT                            := ${DEFAULT_PLAT}
  35
  36 ################################################################################
  37 # Checkpatch script options
  38 ################################################################################
  39
  40 CHECKCODE_ARGS          :=      --no-patch
  41 # Do not check the coding style on imported library files or documentation files
  42 INC_LIB_DIRS_TO_CHECK   :=      $(sort $(filter-out                     \
  43                                         include/lib/libfdt              \
  44                                         include/lib/libc,               \
  45                                         $(wildcard include/lib/*)))
  46 INC_DIRS_TO_CHECK       :=      $(sort $(filter-out                     \
  47                                         include/lib,                    \
  48                                         $(wildcard include/*)))
  49 LIB_DIRS_TO_CHECK       :=      $(sort $(filter-out                     \
  50                                         lib/compiler-rt                 \
  51                                         lib/libfdt%                     \
  52                                         lib/libc,                       \
  53                                         $(wildcard lib/*)))
  54 ROOT_DIRS_TO_CHECK      :=      $(sort $(filter-out                     \
  55                                         lib                             \
  56                                         include                         \
  57                                         docs                            \
  58                                         %.rst,                          \
  59                                         $(wildcard *)))
  60 CHECK_PATHS             :=      ${ROOT_DIRS_TO_CHECK}                   \
  61                                 ${INC_DIRS_TO_CHECK}                    \
  62                                 ${INC_LIB_DIRS_TO_CHECK}                \
  63                                 ${LIB_DIRS_TO_CHECK}
  64
  65
  66 ################################################################################
  67 # Process build options
  68 ################################################################################
  69
  70 # Verbose flag
  71 ifeq (${V},0)
  72         Q:=@
  73         ECHO:=@echo
  74         CHECKCODE_ARGS  +=      --no-summary --terse
  75 else
  76         Q:=
  77         ECHO:=$(ECHO_QUIET)
  78 endif
  79
  80 ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),)
  81         Q:=@
  82         ECHO:=$(ECHO_QUIET)
  83 endif
  84
  85 export Q ECHO
  86
  87 # Process Debug flag
  88 $(eval $(call add_define,DEBUG))
  89 ifneq (${DEBUG}, 0)
  90         BUILD_TYPE      :=      debug
  91         TF_CFLAGS       +=      -g
  92
  93         ifneq ($(findstring clang,$(notdir $(CC))),)
  94              ASFLAGS            +=      -g
  95         else
  96              ASFLAGS            +=      -g -Wa,--gdwarf-2
  97         endif
  98
  99         # Use LOG_LEVEL_INFO by default for debug builds
 100         LOG_LEVEL       :=      40
 101 else
 102         BUILD_TYPE      :=      release
 103         # Use LOG_LEVEL_NOTICE by default for release builds
 104         LOG_LEVEL       :=      20
 105 endif
 106
 107 # Default build string (git branch and commit)
 108 ifeq (${BUILD_STRING},)
 109         BUILD_STRING    :=      $(shell git describe --always --dirty --tags 2> /dev/null)
 110 endif
 111 VERSION_STRING          :=      v${VERSION_MAJOR}.${VERSION_MINOR}(${BUILD_TYPE}):${BUILD_STRING}
 112
 113 # The cert_create tool cannot generate certificates individually, so we use the
 114 # target 'certificates' to create them all
 115 ifneq (${GENERATE_COT},0)
 116         FIP_DEPS += certificates
 117         FWU_FIP_DEPS += fwu_certificates
 118 endif
 119
 120 # Process BRANCH_PROTECTION value and set
 121 # Pointer Authentication and Branch Target Identification flags
 122 ifeq (${BRANCH_PROTECTION},0)
 123         # Default value turns off all types of branch protection
 124         BP_OPTION := none
 125 else ifneq (${ARCH},aarch64)
 126         $(error BRANCH_PROTECTION requires AArch64)
 127 else ifeq (${BRANCH_PROTECTION},1)
 128         # Enables all types of branch protection features
 129         BP_OPTION := standard
 130         ENABLE_BTI := 1
 131         ENABLE_PAUTH := 1
 132 else ifeq (${BRANCH_PROTECTION},2)
 133         # Return address signing to its standard level
 134         BP_OPTION := pac-ret
 135         ENABLE_PAUTH := 1
 136 else ifeq (${BRANCH_PROTECTION},3)
 137         # Extend the signing to include leaf functions
 138         BP_OPTION := pac-ret+leaf
 139         ENABLE_PAUTH := 1
 140 else
 141         $(error Unknown BRANCH_PROTECTION value ${BRANCH_PROTECTION})
 142 endif
 143
 144 # USE_SPINLOCK_CAS requires AArch64 build
 145 ifeq (${USE_SPINLOCK_CAS},1)
 146 ifneq (${ARCH},aarch64)
 147         $(error USE_SPINLOCK_CAS requires AArch64)
 148 else
 149         $(info USE_SPINLOCK_CAS is an experimental feature)
 150 endif
 151 endif
 152
 153 ################################################################################
 154 # Toolchain
 155 ################################################################################
 156
 157 HOSTCC                  :=      gcc
 158 export HOSTCC
 159
 160 CC                      :=      ${CROSS_COMPILE}gcc
 161 CPP                     :=      ${CROSS_COMPILE}cpp
 162 AS                      :=      ${CROSS_COMPILE}gcc
 163 AR                      :=      ${CROSS_COMPILE}ar
 164 LINKER                  :=      ${CROSS_COMPILE}ld
 165 OC                      :=      ${CROSS_COMPILE}objcopy
 166 OD                      :=      ${CROSS_COMPILE}objdump
 167 NM                      :=      ${CROSS_COMPILE}nm
 168 PP                      :=      ${CROSS_COMPILE}gcc -E
 169 DTC                     :=      dtc
 170
 171 # Use ${LD}.bfd instead if it exists (as absolute path or together with $PATH).
 172 ifneq ($(strip $(wildcard ${LD}.bfd) \
 173         $(foreach dir,$(subst :, ,${PATH}),$(wildcard ${dir}/${LINKER}.bfd))),)
 174 LINKER                  :=      ${LINKER}.bfd
 175 endif
 176
 177 ifeq (${ARM_ARCH_MAJOR},7)
 178 target32-directive      =       -target arm-none-eabi
 179 # Will set march32-directive from platform configuration
 180 else
 181 target32-directive      =       -target armv8a-none-eabi
 182
 183 # Set the compiler's target architecture profile based on ARM_ARCH_MINOR option
 184 ifeq (${ARM_ARCH_MINOR},0)
 185 march32-directive       =       -march=armv8-a
 186 march64-directive       =       -march=armv8-a
 187 else
 188 march32-directive       =       -march=armv8.${ARM_ARCH_MINOR}-a
 189 march64-directive       =       -march=armv8.${ARM_ARCH_MINOR}-a
 190 endif
 191 endif
 192
 193 ifneq ($(findstring armclang,$(notdir $(CC))),)
 194 TF_CFLAGS_aarch32       =       -target arm-arm-none-eabi $(march32-directive)
 195 TF_CFLAGS_aarch64       =       -target aarch64-arm-none-eabi $(march64-directive)
 196 LD                      =       $(LINKER)
 197 AS                      =       $(CC) -c -x assembler-with-cpp $(TF_CFLAGS_$(ARCH))
 198 CPP                     =       $(CC) -E $(TF_CFLAGS_$(ARCH))
 199 PP                      =       $(CC) -E $(TF_CFLAGS_$(ARCH))
 200 else ifneq ($(findstring clang,$(notdir $(CC))),)
 201 TF_CFLAGS_aarch32       =       $(target32-directive) $(march32-directive)
 202 TF_CFLAGS_aarch64       =       -target aarch64-elf $(march64-directive)
 203 LD                      =       $(LINKER)
 204 AS                      =       $(CC) -c -x assembler-with-cpp $(TF_CFLAGS_$(ARCH))
 205 CPP                     =       $(CC) -E
 206 PP                      =       $(CC) -E
 207 else
 208 TF_CFLAGS_aarch32       =       $(march32-directive)
 209 TF_CFLAGS_aarch64       =       $(march64-directive)
 210 LD                      =       $(LINKER)
 211 endif
 212
 213 ifeq (${AARCH32_INSTRUCTION_SET},A32)
 214 TF_CFLAGS_aarch32       +=      -marm
 215 else ifeq (${AARCH32_INSTRUCTION_SET},T32)
 216 TF_CFLAGS_aarch32       +=      -mthumb
 217 else
 218 $(error Error: Unknown AArch32 instruction set ${AARCH32_INSTRUCTION_SET})
 219 endif
 220
 221 TF_CFLAGS_aarch32       +=      -mno-unaligned-access
 222 TF_CFLAGS_aarch64       +=      -mgeneral-regs-only -mstrict-align
 223
 224 ifneq (${BP_OPTION},none)
 225 TF_CFLAGS_aarch64       +=      -mbranch-protection=${BP_OPTION}
 226 endif
 227
 228 ASFLAGS_aarch32         =       $(march32-directive)
 229 ASFLAGS_aarch64         =       $(march64-directive)
 230
 231 WARNING1 := -Wextra
 232 WARNING1 += -Wmissing-declarations
 233 WARNING1 += -Wmissing-format-attribute
 234 WARNING1 += -Wmissing-prototypes
 235 WARNING1 += -Wold-style-definition
 236 WARNING1 += -Wunused-const-variable
 237
 238 WARNING2 := -Waggregate-return
 239 WARNING2 += -Wcast-align
 240 WARNING2 += -Wnested-externs
 241 WARNING2 += -Wshadow
 242 WARNING2 += -Wlogical-op
 243 WARNING2 += -Wmissing-field-initializers
 244 WARNING2 += -Wsign-compare
 245
 246 WARNING3 := -Wbad-function-cast
 247 WARNING3 += -Wcast-qual
 248 WARNING3 += -Wconversion
 249 WARNING3 += -Wpacked
 250 WARNING3 += -Wpadded
 251 WARNING3 += -Wpointer-arith
 252 WARNING3 += -Wredundant-decls
 253 WARNING3 += -Wswitch-default
 254
 255 ifeq (${W},1)
 256 WARNINGS := $(WARNING1)
 257 else ifeq (${W},2)
 258 WARNINGS := $(WARNING1) $(WARNING2)
 259 else ifeq (${W},3)
 260 WARNINGS := $(WARNING1) $(WARNING2) $(WARNING3)
 261 endif
 262
 263 WARNINGS        +=              -Wunused -Wno-unused-parameter  \
 264                                 -Wdisabled-optimization         \
 265                                 -Wvla
 266
 267 ifeq ($(findstring clang,$(notdir $(CC))),)
 268 # not using clang
 269 WARNINGS        +=              -Wunused-but-set-variable       \
 270                                 -Wmaybe-uninitialized           \
 271                                 -Wpacked-bitfield-compat        \
 272                                 -Wshift-overflow=2
 273 else
 274 # using clang
 275 WARNINGS        +=              -Wshift-overflow -Wshift-sign-overflow
 276 endif
 277
 278 ifneq (${E},0)
 279 ERRORS := -Werror
 280 endif
 281
 282 CPPFLAGS                =       ${DEFINES} ${INCLUDES} ${MBEDTLS_INC} -nostdinc         \
 283                                 -Wmissing-include-dirs $(ERRORS) $(WARNINGS)
 284 ASFLAGS                 +=      $(CPPFLAGS) $(ASFLAGS_$(ARCH))                  \
 285                                 -ffreestanding -Wa,--fatal-warnings
 286 TF_CFLAGS               +=      $(CPPFLAGS) $(TF_CFLAGS_$(ARCH))                \
 287                                 -ffreestanding -fno-builtin -Wall -std=gnu99    \
 288                                 -Os -ffunction-sections -fdata-sections
 289
 290 ifeq (${SANITIZE_UB},on)
 291 TF_CFLAGS               +=      -fsanitize=undefined -fno-sanitize-recover
 292 endif
 293 ifeq (${SANITIZE_UB},trap)
 294 TF_CFLAGS               +=      -fsanitize=undefined -fno-sanitize-recover      \
 295                                 -fsanitize-undefined-trap-on-error
 296 endif
 297
 298 GCC_V_OUTPUT            :=      $(shell $(CC) -v 2>&1)
 299
 300 ifneq ($(findstring armlink,$(notdir $(LD))),)
 301 TF_LDFLAGS              +=      --diag_error=warning --lto_level=O1
 302 TF_LDFLAGS              +=      --remove --info=unused,unusedsymbols
 303 else
 304 TF_LDFLAGS              +=      --fatal-warnings -O1
 305 TF_LDFLAGS              +=      --gc-sections
 306 endif
 307 TF_LDFLAGS              +=      $(TF_LDFLAGS_$(ARCH))
 308
 309 DTC_FLAGS               +=      -I dts -O dtb
 310 DTC_CPPFLAGS            +=      -nostdinc -Iinclude -undef -x assembler-with-cpp
 311
 312 ################################################################################
 313 # Common sources and include directories
 314 ################################################################################
 315 include lib/compiler-rt/compiler-rt.mk
 316
 317 BL_COMMON_SOURCES       +=      common/bl_common.c                      \
 318                                 common/tf_log.c                         \
 319                                 common/${ARCH}/debug.S                  \
 320                                 drivers/console/multi_console.c         \
 321                                 lib/${ARCH}/cache_helpers.S             \
 322                                 lib/${ARCH}/misc_helpers.S              \
 323                                 plat/common/plat_bl_common.c            \
 324                                 plat/common/plat_log_common.c           \
 325                                 plat/common/${ARCH}/plat_common.c       \
 326                                 plat/common/${ARCH}/platform_helpers.S  \
 327                                 ${COMPILER_RT_SRCS}
 328
 329 ifeq ($(notdir $(CC)),armclang)
 330 BL_COMMON_SOURCES       +=      lib/${ARCH}/armclang_printf.S
 331 endif
 332
 333 ifeq (${SANITIZE_UB},on)
 334 BL_COMMON_SOURCES       +=      plat/common/ubsan.c
 335 endif
 336
 337 INCLUDES                +=      -Iinclude                               \
 338                                 -Iinclude/arch/${ARCH}                  \
 339                                 -Iinclude/lib/cpus/${ARCH}              \
 340                                 -Iinclude/lib/el3_runtime/${ARCH}       \
 341                                 ${PLAT_INCLUDES}                        \
 342                                 ${SPD_INCLUDES}
 343
 344 include common/backtrace/backtrace.mk
 345
 346 ################################################################################
 347 # Generic definitions
 348 ################################################################################
 349
 350 include ${MAKE_HELPERS_DIRECTORY}plat_helpers.mk
 351
 352 BUILD_BASE              :=      ./build
 353 BUILD_PLAT              :=      ${BUILD_BASE}/${PLAT}/${BUILD_TYPE}
 354
 355 SPDS                    :=      $(sort $(filter-out none, $(patsubst services/spd/%,%,$(wildcard services/spd/*))))
 356
 357 # Platforms providing their own TBB makefile may override this value
 358 INCLUDE_TBBR_MK         :=      1
 359
 360
 361 ################################################################################
 362 # Include SPD Makefile if one has been specified
 363 ################################################################################
 364
 365 ifneq (${SPD},none)
 366 ifeq (${ARCH},aarch32)
 367         $(error "Error: SPD is incompatible with AArch32.")
 368 endif
 369 ifdef EL3_PAYLOAD_BASE
 370         $(warning "SPD and EL3_PAYLOAD_BASE are incompatible build options.")
 371         $(warning "The SPD and its BL32 companion will be present but ignored.")
 372 endif
 373         # We expect to locate an spd.mk under the specified SPD directory
 374         SPD_MAKE        :=      $(wildcard services/spd/${SPD}/${SPD}.mk)
 375
 376         ifeq (${SPD_MAKE},)
 377                 $(error Error: No services/spd/${SPD}/${SPD}.mk located)
 378         endif
 379         $(info Including ${SPD_MAKE})
 380         include ${SPD_MAKE}
 381
 382         # If there's BL32 companion for the chosen SPD, we expect that the SPD's
 383         # Makefile would set NEED_BL32 to "yes". In this case, the build system
 384         # supports two mutually exclusive options:
 385         # * BL32 is built from source: then BL32_SOURCES must contain the list
 386         #   of source files to build BL32
 387         # * BL32 is a prebuilt binary: then BL32 must point to the image file
 388         #   that will be included in the FIP
 389         # If both BL32_SOURCES and BL32 are defined, the binary takes precedence
 390         # over the sources.
 391 endif
 392
 393 ################################################################################
 394 # Include the platform specific Makefile after the SPD Makefile (the platform
 395 # makefile may use all previous definitions in this file)
 396 ################################################################################
 397
 398 include ${PLAT_MAKEFILE_FULL}
 399
 400 $(eval $(call MAKE_PREREQ_DIR,${BUILD_PLAT}))
 401
 402 ifeq (${ARM_ARCH_MAJOR},7)
 403 include make_helpers/armv7-a-cpus.mk
 404 endif
 405
 406 ifeq ($(ENABLE_PIE),1)
 407     TF_CFLAGS           +=      -fpie
 408     TF_LDFLAGS          +=      -pie --no-dynamic-linker
 409 else
 410     PIE_FOUND           :=      $(findstring --enable-default-pie,${GCC_V_OUTPUT})
 411     ifneq ($(PIE_FOUND),)
 412         TF_CFLAGS               +=      -fno-PIE
 413     endif
 414 endif
 415
 416 # Include the CPU specific operations makefile, which provides default
 417 # values for all CPU errata workarounds and CPU specific optimisations.
 418 # This can be overridden by the platform.
 419 include lib/cpus/cpu-ops.mk
 420
 421 ifeq (${ARCH},aarch32)
 422 NEED_BL32 := yes
 423
 424 ################################################################################
 425 # Build `AARCH32_SP` as BL32 image for AArch32
 426 ################################################################################
 427 ifneq (${AARCH32_SP},none)
 428 # We expect to locate an sp.mk under the specified AARCH32_SP directory
 429 AARCH32_SP_MAKE :=      $(wildcard bl32/${AARCH32_SP}/${AARCH32_SP}.mk)
 430
 431 ifeq (${AARCH32_SP_MAKE},)
 432   $(error Error: No bl32/${AARCH32_SP}/${AARCH32_SP}.mk located)
 433 endif
 434
 435 $(info Including ${AARCH32_SP_MAKE})
 436 include ${AARCH32_SP_MAKE}
 437 endif
 438
 439 endif
 440
 441 ################################################################################
 442 # Include libc if not overridden
 443 ################################################################################
 444 ifeq (${OVERRIDE_LIBC},0)
 445 include lib/libc/libc.mk
 446 endif
 447
 448 ################################################################################
 449 # Check incompatible options
 450 ################################################################################
 451
 452 ifdef EL3_PAYLOAD_BASE
 453         ifdef PRELOADED_BL33_BASE
 454                 $(warning "PRELOADED_BL33_BASE and EL3_PAYLOAD_BASE are \
 455                 incompatible build options. EL3_PAYLOAD_BASE has priority.")
 456         endif
 457         ifneq (${GENERATE_COT},0)
 458                 $(error "GENERATE_COT and EL3_PAYLOAD_BASE are incompatible build options.")
 459         endif
 460         ifneq (${TRUSTED_BOARD_BOOT},0)
 461                 $(error "TRUSTED_BOARD_BOOT and EL3_PAYLOAD_BASE are incompatible build options.")
 462         endif
 463 endif
 464
 465 ifeq (${NEED_BL33},yes)
 466         ifdef EL3_PAYLOAD_BASE
 467                 $(warning "BL33 image is not needed when option \
 468                 BL33_PAYLOAD_BASE is used and won't be added to the FIP file.")
 469         endif
 470         ifdef PRELOADED_BL33_BASE
 471                 $(warning "BL33 image is not needed when option \
 472                 PRELOADED_BL33_BASE is used and won't be added to the FIP \
 473                 file.")
 474         endif
 475 endif
 476
 477 # When building for systems with hardware-assisted coherency, there's no need to
 478 # use USE_COHERENT_MEM. Require that USE_COHERENT_MEM must be set to 0 too.
 479 ifeq ($(HW_ASSISTED_COHERENCY)-$(USE_COHERENT_MEM),1-1)
 480 $(error USE_COHERENT_MEM cannot be enabled with HW_ASSISTED_COHERENCY)
 481 endif
 482
 483 #For now, BL2_IN_XIP_MEM is only supported when BL2_AT_EL3 is 1.
 484 ifeq ($(BL2_AT_EL3)-$(BL2_IN_XIP_MEM),0-1)
 485 $(error "BL2_IN_XIP_MEM is only supported when BL2_AT_EL3 is enabled")
 486 endif
 487
 488 # For RAS_EXTENSION, require that EAs are handled in EL3 first
 489 ifeq ($(RAS_EXTENSION),1)
 490     ifneq ($(HANDLE_EA_EL3_FIRST),1)
 491         $(error For RAS_EXTENSION, HANDLE_EA_EL3_FIRST must also be 1)
 492     endif
 493 endif
 494
 495 # When FAULT_INJECTION_SUPPORT is used, require that RAS_EXTENSION is enabled
 496 ifeq ($(FAULT_INJECTION_SUPPORT),1)
 497     ifneq ($(RAS_EXTENSION),1)
 498         $(error For FAULT_INJECTION_SUPPORT, RAS_EXTENSION must also be 1)
 499     endif
 500 endif
 501
 502 # DYN_DISABLE_AUTH can be set only when TRUSTED_BOARD_BOOT=1
 503 ifeq ($(DYN_DISABLE_AUTH), 1)
 504     ifeq (${TRUSTED_BOARD_BOOT}, 0)
 505         $(error "TRUSTED_BOARD_BOOT must be enabled for DYN_DISABLE_AUTH to be set.")
 506     endif
 507 endif
 508
 509 # If pointer authentication is used in the firmware, make sure that all the
 510 # registers associated to it are also saved and restored.
 511 # Not doing it would leak the value of the keys used by EL3 to EL1 and S-EL1.
 512 ifeq ($(ENABLE_PAUTH),1)
 513     ifeq ($(CTX_INCLUDE_PAUTH_REGS),0)
 514         $(error Pointer Authentication requires CTX_INCLUDE_PAUTH_REGS=1)
 515     endif
 516 endif
 517
 518 ifeq ($(CTX_INCLUDE_PAUTH_REGS),1)
 519     ifneq (${ARCH},aarch64)
 520         $(error CTX_INCLUDE_PAUTH_REGS requires AArch64)
 521     else
 522         $(info CTX_INCLUDE_PAUTH_REGS is an experimental feature)
 523     endif
 524 endif
 525
 526 ifeq ($(ENABLE_PAUTH),1)
 527     $(info Pointer Authentication is an experimental feature)
 528 endif
 529
 530 ifeq ($(ENABLE_BTI),1)
 531     $(info Branch Protection is an experimental feature)
 532 endif
 533
 534 ifeq ($(CTX_INCLUDE_MTE_REGS),1)
 535     ifneq (${ARCH},aarch64)
 536         $(error CTX_INCLUDE_MTE_REGS requires AArch64)
 537     else
 538         $(info CTX_INCLUDE_MTE_REGS is an experimental feature)
 539     endif
 540 endif
 541
 542 ################################################################################
 543 # Process platform overrideable behaviour
 544 ################################################################################
 545
 546 # Using BL2 implies that a BL33 image also needs to be supplied for the FIP and
 547 # Certificate generation tools. This flag can be overridden by the platform.
 548 ifdef BL2_SOURCES
 549         ifdef EL3_PAYLOAD_BASE
 550                 # If booting an EL3 payload there is no need for a BL33 image
 551                 # in the FIP file.
 552                 NEED_BL33               :=      no
 553         else
 554                 ifdef PRELOADED_BL33_BASE
 555                         # If booting a BL33 preloaded image there is no need of
 556                         # another one in the FIP file.
 557                         NEED_BL33               :=      no
 558                 else
 559                         NEED_BL33               ?=      yes
 560                 endif
 561         endif
 562 endif
 563
 564 # If SCP_BL2 is given, we always want FIP to include it.
 565 ifdef SCP_BL2
 566         NEED_SCP_BL2            :=      yes
 567 endif
 568
 569 # For AArch32, BL31 is not currently supported.
 570 ifneq (${ARCH},aarch32)
 571     ifdef BL31_SOURCES
 572         # When booting an EL3 payload, there is no need to compile the BL31 image nor
 573         # put it in the FIP.
 574         ifndef EL3_PAYLOAD_BASE
 575             NEED_BL31 := yes
 576         endif
 577     endif
 578 endif
 579
 580 # Process TBB related flags
 581 ifneq (${GENERATE_COT},0)
 582         # Common cert_create options
 583         ifneq (${CREATE_KEYS},0)
 584                 $(eval CRT_ARGS += -n)
 585                 $(eval FWU_CRT_ARGS += -n)
 586                 ifneq (${SAVE_KEYS},0)
 587                         $(eval CRT_ARGS += -k)
 588                         $(eval FWU_CRT_ARGS += -k)
 589                 endif
 590         endif
 591         # Include TBBR makefile (unless the platform indicates otherwise)
 592         ifeq (${INCLUDE_TBBR_MK},1)
 593                 include make_helpers/tbbr/tbbr_tools.mk
 594         endif
 595 endif
 596
 597 ifneq (${FIP_ALIGN},0)
 598 FIP_ARGS += --align ${FIP_ALIGN}
 599 endif
 600
 601 ################################################################################
 602 # Include libraries' Makefile that are used in all BL
 603 ################################################################################
 604
 605 include lib/stack_protector/stack_protector.mk
 606
 607 ################################################################################
 608 # Auxiliary tools (fiptool, cert_create, etc)
 609 ################################################################################
 610
 611 # Variables for use with Certificate Generation Tool
 612 CRTTOOLPATH             ?=      tools/cert_create
 613 CRTTOOL                 ?=      ${CRTTOOLPATH}/cert_create${BIN_EXT}
 614
 615 # Variables for use with Firmware Image Package
 616 FIPTOOLPATH             ?=      tools/fiptool
 617 FIPTOOL                 ?=      ${FIPTOOLPATH}/fiptool${BIN_EXT}
 618
 619 # Variables for use with sptool
 620 SPTOOLPATH              ?=      tools/sptool
 621 SPTOOL                  ?=      ${SPTOOLPATH}/sptool${BIN_EXT}
 622
 623 # Variables for use with ROMLIB
 624 ROMLIBPATH              ?=      lib/romlib
 625
 626 ################################################################################
 627 # Include BL specific makefiles
 628 ################################################################################
 629 ifdef BL1_SOURCES
 630 NEED_BL1 := yes
 631 include bl1/bl1.mk
 632 endif
 633
 634 ifdef BL2_SOURCES
 635 NEED_BL2 := yes
 636 include bl2/bl2.mk
 637 endif
 638
 639 ifdef BL2U_SOURCES
 640 NEED_BL2U := yes
 641 include bl2u/bl2u.mk
 642 endif
 643
 644 ifeq (${NEED_BL31},yes)
 645 ifdef BL31_SOURCES
 646 include bl31/bl31.mk
 647 endif
 648 endif
 649
 650 ifdef FDT_SOURCES
 651 NEED_FDT := yes
 652 endif
 653
 654 ################################################################################
 655 # Build options checks
 656 ################################################################################
 657
 658 $(eval $(call assert_boolean,COLD_BOOT_SINGLE_CPU))
 659 $(eval $(call assert_boolean,CREATE_KEYS))
 660 $(eval $(call assert_boolean,CTX_INCLUDE_AARCH32_REGS))
 661 $(eval $(call assert_boolean,CTX_INCLUDE_FPREGS))
 662 $(eval $(call assert_boolean,CTX_INCLUDE_PAUTH_REGS))
 663 $(eval $(call assert_boolean,CTX_INCLUDE_MTE_REGS))
 664 $(eval $(call assert_boolean,DEBUG))
 665 $(eval $(call assert_boolean,DYN_DISABLE_AUTH))
 666 $(eval $(call assert_boolean,EL3_EXCEPTION_HANDLING))
 667 $(eval $(call assert_boolean,ENABLE_AMU))
 668 $(eval $(call assert_boolean,ENABLE_ASSERTIONS))
 669 $(eval $(call assert_boolean,ENABLE_MPAM_FOR_LOWER_ELS))
 670 $(eval $(call assert_boolean,ENABLE_PIE))
 671 $(eval $(call assert_boolean,ENABLE_PMF))
 672 $(eval $(call assert_boolean,ENABLE_PSCI_STAT))
 673 $(eval $(call assert_boolean,ENABLE_RUNTIME_INSTRUMENTATION))
 674 $(eval $(call assert_boolean,ENABLE_SPE_FOR_LOWER_ELS))
 675 $(eval $(call assert_boolean,ENABLE_SPM))
 676 $(eval $(call assert_boolean,ENABLE_SVE_FOR_NS))
 677 $(eval $(call assert_boolean,ERROR_DEPRECATED))
 678 $(eval $(call assert_boolean,FAULT_INJECTION_SUPPORT))
 679 $(eval $(call assert_boolean,GENERATE_COT))
 680 $(eval $(call assert_boolean,GICV2_G0_FOR_EL3))
 681 $(eval $(call assert_boolean,HANDLE_EA_EL3_FIRST))
 682 $(eval $(call assert_boolean,HW_ASSISTED_COHERENCY))
 683 $(eval $(call assert_boolean,NS_TIMER_SWITCH))
 684 $(eval $(call assert_boolean,OVERRIDE_LIBC))
 685 $(eval $(call assert_boolean,PL011_GENERIC_UART))
 686 $(eval $(call assert_boolean,PROGRAMMABLE_RESET_ADDRESS))
 687 $(eval $(call assert_boolean,PSCI_EXTENDED_STATE_ID))
 688 $(eval $(call assert_boolean,RAS_EXTENSION))
 689 $(eval $(call assert_boolean,RESET_TO_BL31))
 690 $(eval $(call assert_boolean,SAVE_KEYS))
 691 $(eval $(call assert_boolean,SEPARATE_CODE_AND_RODATA))
 692 $(eval $(call assert_boolean,SPIN_ON_BL1_EXIT))
 693 $(eval $(call assert_boolean,SPM_MM))
 694 $(eval $(call assert_boolean,TRUSTED_BOARD_BOOT))
 695 $(eval $(call assert_boolean,USE_COHERENT_MEM))
 696 $(eval $(call assert_boolean,USE_ROMLIB))
 697 $(eval $(call assert_boolean,USE_TBBR_DEFS))
 698 $(eval $(call assert_boolean,WARMBOOT_ENABLE_DCACHE_EARLY))
 699 $(eval $(call assert_boolean,BL2_AT_EL3))
 700 $(eval $(call assert_boolean,BL2_IN_XIP_MEM))
 701 $(eval $(call assert_boolean,BL2_INV_DCACHE))
 702 $(eval $(call assert_boolean,USE_SPINLOCK_CAS))
 703
 704 $(eval $(call assert_numeric,ARM_ARCH_MAJOR))
 705 $(eval $(call assert_numeric,ARM_ARCH_MINOR))
 706 $(eval $(call assert_numeric,BRANCH_PROTECTION))
 707
 708 ifdef KEY_SIZE
 709         $(eval $(call assert_numeric,KEY_SIZE))
 710 endif
 711
 712 ifeq ($(filter $(SANITIZE_UB), on off trap),)
 713         $(error "Invalid value for SANITIZE_UB: can be one of on, off, trap")
 714 endif
 715
 716 ################################################################################
 717 # Add definitions to the cpp preprocessor based on the current build options.
 718 # This is done after including the platform specific makefile to allow the
 719 # platform to overwrite the default options
 720 ################################################################################
 721
 722 $(eval $(call add_define,ARM_ARCH_MAJOR))
 723 $(eval $(call add_define,ARM_ARCH_MINOR))
 724 $(eval $(call add_define,COLD_BOOT_SINGLE_CPU))
 725 $(eval $(call add_define,CTX_INCLUDE_AARCH32_REGS))
 726 $(eval $(call add_define,CTX_INCLUDE_FPREGS))
 727 $(eval $(call add_define,CTX_INCLUDE_PAUTH_REGS))
 728 $(eval $(call add_define,EL3_EXCEPTION_HANDLING))
 729 $(eval $(call add_define,CTX_INCLUDE_MTE_REGS))
 730 $(eval $(call add_define,ENABLE_AMU))
 731 $(eval $(call add_define,ENABLE_ASSERTIONS))
 732 $(eval $(call add_define,ENABLE_BTI))
 733 $(eval $(call add_define,ENABLE_MPAM_FOR_LOWER_ELS))
 734 $(eval $(call add_define,ENABLE_PAUTH))
 735 $(eval $(call add_define,ENABLE_PIE))
 736 $(eval $(call add_define,ENABLE_PMF))
 737 $(eval $(call add_define,ENABLE_PSCI_STAT))
 738 $(eval $(call add_define,ENABLE_RUNTIME_INSTRUMENTATION))
 739 $(eval $(call add_define,ENABLE_SPE_FOR_LOWER_ELS))
 740 $(eval $(call add_define,ENABLE_SPM))
 741 $(eval $(call add_define,ENABLE_SVE_FOR_NS))
 742 $(eval $(call add_define,ERROR_DEPRECATED))
 743 $(eval $(call add_define,FAULT_INJECTION_SUPPORT))
 744 $(eval $(call add_define,GICV2_G0_FOR_EL3))
 745 $(eval $(call add_define,HANDLE_EA_EL3_FIRST))
 746 $(eval $(call add_define,HW_ASSISTED_COHERENCY))
 747 $(eval $(call add_define,LOG_LEVEL))
 748 $(eval $(call add_define,NS_TIMER_SWITCH))
 749 $(eval $(call add_define,PL011_GENERIC_UART))
 750 $(eval $(call add_define,PLAT_${PLAT}))
 751 $(eval $(call add_define,PROGRAMMABLE_RESET_ADDRESS))
 752 $(eval $(call add_define,PSCI_EXTENDED_STATE_ID))
 753 $(eval $(call add_define,RAS_EXTENSION))
 754 $(eval $(call add_define,RESET_TO_BL31))
 755 $(eval $(call add_define,SEPARATE_CODE_AND_RODATA))
 756 $(eval $(call add_define,RECLAIM_INIT_CODE))
 757 $(eval $(call add_define,SPD_${SPD}))
 758 $(eval $(call add_define,SPIN_ON_BL1_EXIT))
 759 $(eval $(call add_define,SPM_MM))
 760 $(eval $(call add_define,TRUSTED_BOARD_BOOT))
 761 $(eval $(call add_define,USE_COHERENT_MEM))
 762 $(eval $(call add_define,USE_ROMLIB))
 763 $(eval $(call add_define,USE_TBBR_DEFS))
 764 $(eval $(call add_define,WARMBOOT_ENABLE_DCACHE_EARLY))
 765 $(eval $(call add_define,BL2_AT_EL3))
 766 $(eval $(call add_define,BL2_IN_XIP_MEM))
 767 $(eval $(call add_define,BL2_INV_DCACHE))
 768 $(eval $(call add_define,USE_SPINLOCK_CAS))
 769
 770 ifeq (${SANITIZE_UB},trap)
 771         $(eval $(call add_define,MONITOR_TRAPS))
 772 endif
 773
 774 # Define the EL3_PAYLOAD_BASE flag only if it is provided.
 775 ifdef EL3_PAYLOAD_BASE
 776         $(eval $(call add_define,EL3_PAYLOAD_BASE))
 777 else
 778         # Define the PRELOADED_BL33_BASE flag only if it is provided and
 779         # EL3_PAYLOAD_BASE is not defined, as it has priority.
 780         ifdef PRELOADED_BL33_BASE
 781                 $(eval $(call add_define,PRELOADED_BL33_BASE))
 782         endif
 783 endif
 784
 785 # Define the DYN_DISABLE_AUTH flag only if set.
 786 ifeq (${DYN_DISABLE_AUTH},1)
 787 $(eval $(call add_define,DYN_DISABLE_AUTH))
 788 endif
 789
 790 ifneq ($(findstring armlink,$(notdir $(LD))),)
 791 $(eval $(call add_define,USE_ARM_LINK))
 792 endif
 793
 794 ################################################################################
 795 # Build targets
 796 ################################################################################
 797
 798 .PHONY: all msg_start clean realclean distclean cscope locate-checkpatch checkcodebase checkpatch fiptool sptool fip fwu_fip certtool dtbs
 799 .SUFFIXES:
 800
 801 all: msg_start
 802
 803 msg_start:
 804         @echo "Building ${PLAT}"
 805
 806 ifeq (${ERROR_DEPRECATED},0)
 807 # Check if deprecated declarations and cpp warnings should be treated as error or not.
 808 ifneq ($(findstring clang,$(notdir $(CC))),)
 809     CPPFLAGS            +=      -Wno-error=deprecated-declarations
 810 else
 811     CPPFLAGS            +=      -Wno-error=deprecated-declarations -Wno-error=cpp
 812 endif
 813 # __ASSEMBLY__ is deprecated in favor of the compiler-builtin __ASSEMBLER__.
 814 ASFLAGS += -D__ASSEMBLY__
 815 # AARCH32/AARCH64 macros are deprecated in favor of the compiler-builtin __aarch64__.
 816 ifeq (${ARCH},aarch32)
 817         $(eval $(call add_define,AARCH32))
 818 else
 819         $(eval $(call add_define,AARCH64))
 820 endif
 821 endif # !ERROR_DEPRECATED
 822
 823 $(eval $(call MAKE_LIB_DIRS))
 824 $(eval $(call MAKE_LIB,c))
 825
 826 # Expand build macros for the different images
 827 ifeq (${NEED_BL1},yes)
 828 $(eval $(call MAKE_BL,1))
 829 endif
 830
 831 ifeq (${NEED_BL2},yes)
 832 ifeq (${BL2_AT_EL3}, 0)
 833 FIP_BL2_ARGS := tb-fw
 834 endif
 835
 836 $(if ${BL2}, $(eval $(call TOOL_ADD_IMG,bl2,--${FIP_BL2_ARGS})),\
 837         $(eval $(call MAKE_BL,2,${FIP_BL2_ARGS})))
 838 endif
 839
 840 ifeq (${NEED_SCP_BL2},yes)
 841 $(eval $(call TOOL_ADD_IMG,scp_bl2,--scp-fw))
 842 endif
 843
 844 ifeq (${NEED_BL31},yes)
 845 BL31_SOURCES += ${SPD_SOURCES}
 846 $(if ${BL31}, $(eval $(call TOOL_ADD_IMG,bl31,--soc-fw)),\
 847         $(eval $(call MAKE_BL,31,soc-fw)))
 848 endif
 849
 850 # If a BL32 image is needed but neither BL32 nor BL32_SOURCES is defined, the
 851 # build system will call TOOL_ADD_IMG to print a warning message and abort the
 852 # process. Note that the dependency on BL32 applies to the FIP only.
 853 ifeq (${NEED_BL32},yes)
 854
 855 BUILD_BL32 := $(if $(BL32),,$(if $(BL32_SOURCES),1))
 856
 857 $(if ${BUILD_BL32}, $(eval $(call MAKE_BL,32,tos-fw)),\
 858         $(eval $(call TOOL_ADD_IMG,bl32,--tos-fw)))
 859 endif
 860
 861 # Add the BL33 image if required by the platform
 862 ifeq (${NEED_BL33},yes)
 863 $(eval $(call TOOL_ADD_IMG,bl33,--nt-fw))
 864 endif
 865
 866 ifeq (${NEED_BL2U},yes)
 867 $(if ${BL2U}, $(eval $(call TOOL_ADD_IMG,bl2u,--ap-fwu-cfg,FWU_)),\
 868         $(eval $(call MAKE_BL,2u,ap-fwu-cfg,FWU_)))
 869 endif
 870
 871 # Expand build macros for the different images
 872 ifeq (${NEED_FDT},yes)
 873     $(eval $(call MAKE_DTBS,$(BUILD_PLAT)/fdts,$(FDT_SOURCES)))
 874 endif
 875
 876 locate-checkpatch:
 877 ifndef CHECKPATCH
 878         $(error "Please set CHECKPATCH to point to the Linux checkpatch.pl file, eg: CHECKPATCH=../linux/scripts/checkpatch.pl")
 879 else
 880 ifeq (,$(wildcard ${CHECKPATCH}))
 881         $(error "The file CHECKPATCH points to cannot be found, use eg: CHECKPATCH=../linux/scripts/checkpatch.pl")
 882 endif
 883 endif
 884
 885 clean:
 886         @echo "  CLEAN"
 887         $(call SHELL_REMOVE_DIR,${BUILD_PLAT})
 888         ${Q}${MAKE} --no-print-directory -C ${FIPTOOLPATH} clean
 889         ${Q}${MAKE} PLAT=${PLAT} --no-print-directory -C ${CRTTOOLPATH} clean
 890         ${Q}${MAKE} --no-print-directory -C ${ROMLIBPATH} clean
 891
 892 realclean distclean:
 893         @echo "  REALCLEAN"
 894         $(call SHELL_REMOVE_DIR,${BUILD_BASE})
 895         $(call SHELL_DELETE_ALL, ${CURDIR}/cscope.*)
 896         ${Q}${MAKE} --no-print-directory -C ${FIPTOOLPATH} clean
 897         ${Q}${MAKE} --no-print-directory -C ${SPTOOLPATH} clean
 898         ${Q}${MAKE} PLAT=${PLAT} --no-print-directory -C ${CRTTOOLPATH} clean
 899         ${Q}${MAKE} --no-print-directory -C ${ROMLIBPATH} clean
 900
 901 checkcodebase:          locate-checkpatch
 902         @echo "  CHECKING STYLE"
 903         @if test -d .git ; then                                         \
 904                 git ls-files | grep -E -v 'libfdt|libc|docs|\.rst' |    \
 905                 while read GIT_FILE ;                                   \
 906                 do ${CHECKPATCH} ${CHECKCODE_ARGS} -f $$GIT_FILE ;      \
 907                 done ;                                                  \
 908         else                                                            \
 909                  find . -type f -not -iwholename "*.git*"               \
 910                  -not -iwholename "*build*"                             \
 911                  -not -iwholename "*libfdt*"                            \
 912                  -not -iwholename "*libc*"                              \
 913                  -not -iwholename "*docs*"                              \
 914                  -not -iwholename "*.rst"                               \
 915                  -exec ${CHECKPATCH} ${CHECKCODE_ARGS} -f {} \; ;       \
 916         fi
 917
 918 checkpatch:             locate-checkpatch
 919         @echo "  CHECKING STYLE"
 920         @if test -n "${CHECKPATCH_OPTS}"; then                          \
 921                 echo "    with ${CHECKPATCH_OPTS} option(s)";           \
 922         fi
 923         ${Q}COMMON_COMMIT=$$(git merge-base HEAD ${BASE_COMMIT});       \
 924         for commit in `git rev-list $$COMMON_COMMIT..HEAD`; do          \
 925                 printf "\n[*] Checking style of '$$commit'\n\n";        \
 926                 git log --format=email "$$commit~..$$commit"            \
 927                         -- ${CHECK_PATHS} |                             \
 928                         ${CHECKPATCH} ${CHECKPATCH_OPTS} - || true;     \
 929                 git diff --format=email "$$commit~..$$commit"           \
 930                         -- ${CHECK_PATHS} |                             \
 931                         ${CHECKPATCH}  ${CHECKPATCH_OPTS} - || true;    \
 932         done
 933
 934 certtool: ${CRTTOOL}
 935
 936 .PHONY: ${CRTTOOL}
 937 ${CRTTOOL}:
 938         ${Q}${MAKE} PLAT=${PLAT} USE_TBBR_DEFS=${USE_TBBR_DEFS} --no-print-directory -C ${CRTTOOLPATH}
 939         @${ECHO_BLANK_LINE}
 940         @echo "Built $@ successfully"
 941         @${ECHO_BLANK_LINE}
 942
 943 ifneq (${GENERATE_COT},0)
 944 certificates: ${CRT_DEPS} ${CRTTOOL}
 945         ${Q}${CRTTOOL} ${CRT_ARGS}
 946         @${ECHO_BLANK_LINE}
 947         @echo "Built $@ successfully"
 948         @echo "Certificates can be found in ${BUILD_PLAT}"
 949         @${ECHO_BLANK_LINE}
 950 endif
 951
 952 ${BUILD_PLAT}/${FIP_NAME}: ${FIP_DEPS} ${FIPTOOL}
 953         ${Q}${FIPTOOL} create ${FIP_ARGS} $@
 954         ${Q}${FIPTOOL} info $@
 955         @${ECHO_BLANK_LINE}
 956         @echo "Built $@ successfully"
 957         @${ECHO_BLANK_LINE}
 958
 959 ifneq (${GENERATE_COT},0)
 960 fwu_certificates: ${FWU_CRT_DEPS} ${CRTTOOL}
 961         ${Q}${CRTTOOL} ${FWU_CRT_ARGS}
 962         @${ECHO_BLANK_LINE}
 963         @echo "Built $@ successfully"
 964         @echo "FWU certificates can be found in ${BUILD_PLAT}"
 965         @${ECHO_BLANK_LINE}
 966 endif
 967
 968 ${BUILD_PLAT}/${FWU_FIP_NAME}: ${FWU_FIP_DEPS} ${FIPTOOL}
 969         ${Q}${FIPTOOL} create ${FWU_FIP_ARGS} $@
 970         ${Q}${FIPTOOL} info $@
 971         @${ECHO_BLANK_LINE}
 972         @echo "Built $@ successfully"
 973         @${ECHO_BLANK_LINE}
 974
 975 fiptool: ${FIPTOOL}
 976 fip: ${BUILD_PLAT}/${FIP_NAME}
 977 fwu_fip: ${BUILD_PLAT}/${FWU_FIP_NAME}
 978
 979 .PHONY: ${FIPTOOL}
 980 ${FIPTOOL}:
 981         ${Q}${MAKE} CPPFLAGS="-DVERSION='\"${VERSION_STRING}\"'" --no-print-directory -C ${FIPTOOLPATH}
 982
 983 sptool: ${SPTOOL}
 984 .PHONY: ${SPTOOL}
 985 ${SPTOOL}:
 986         ${Q}${MAKE} CPPFLAGS="-DVERSION='\"${VERSION_STRING}\"'" --no-print-directory -C ${SPTOOLPATH}
 987
 988 .PHONY: libraries
 989 romlib.bin: libraries
 990         ${Q}${MAKE} PLAT_DIR=${PLAT_DIR} BUILD_PLAT=${BUILD_PLAT} ENABLE_BTI=${ENABLE_BTI} ARM_ARCH_MINOR=${ARM_ARCH_MINOR} INCLUDES='${INCLUDES}' DEFINES='${DEFINES}' --no-print-directory -C ${ROMLIBPATH} all
 991
 992 cscope:
 993         @echo "  CSCOPE"
 994         ${Q}find ${CURDIR} -name "*.[chsS]" > cscope.files
 995         ${Q}cscope -b -q -k
 996
 997 help:
 998         @echo "usage: ${MAKE} [PLAT=<platform>] [OPTIONS] [TARGET]"
 999         @echo ""
1000         @echo "PLAT is used to specify which platform you wish to build."
1001         @echo "If no platform is specified, PLAT defaults to: ${DEFAULT_PLAT}"
1002         @echo ""
1003         @echo "platform = ${PLATFORM_LIST}"
1004         @echo ""
1005         @echo "Please refer to the User Guide for a list of all supported options."
1006         @echo "Note that the build system doesn't track dependencies for build "
1007         @echo "options. Therefore, if any of the build options are changed "
1008         @echo "from a previous build, a clean build must be performed."
1009         @echo ""
1010         @echo "Supported Targets:"
1011         @echo "  all            Build all individual bootloader binaries"
1012         @echo "  bl1            Build the BL1 binary"
1013         @echo "  bl2            Build the BL2 binary"
1014         @echo "  bl2u           Build the BL2U binary"
1015         @echo "  bl31           Build the BL31 binary"
1016         @echo "  bl32           Build the BL32 binary. If ARCH=aarch32, then "
1017         @echo "                 this builds secure payload specified by AARCH32_SP"
1018         @echo "  certificates   Build the certificates (requires 'GENERATE_COT=1')"
1019         @echo "  fip            Build the Firmware Image Package (FIP)"
1020         @echo "  fwu_fip        Build the FWU Firmware Image Package (FIP)"
1021         @echo "  checkcodebase  Check the coding style of the entire source tree"
1022         @echo "  checkpatch     Check the coding style on changes in the current"
1023         @echo "                 branch against BASE_COMMIT (default origin/master)"
1024         @echo "  clean          Clean the build for the selected platform"
1025         @echo "  cscope         Generate cscope index"
1026         @echo "  distclean      Remove all build artifacts for all platforms"
1027         @echo "  certtool       Build the Certificate generation tool"
1028         @echo "  fiptool        Build the Firmware Image Package (FIP) creation tool"
1029         @echo "  sptool         Build the Secure Partition Package creation tool"
1030         @echo "  dtbs           Build the Device Tree Blobs (if required for the platform)"
1031         @echo ""
1032         @echo "Note: most build targets require PLAT to be set to a specific platform."
1033         @echo ""
1034         @echo "example: build all targets for the FVP platform:"
1035         @echo "  CROSS_COMPILE=aarch64-none-elf- make PLAT=fvp all"