1# 2# Copyright (c) 2013-2015, ARM Limited and Contributors. All rights reserved. 3# 4# Redistribution and use in source and binary forms, with or without 5# modification, are permitted provided that the following conditions are met: 6# 7# Redistributions of source code must retain the above copyright notice, this 8# list of conditions and the following disclaimer. 9# 10# Redistributions in binary form must reproduce the above copyright notice, 11# this list of conditions and the following disclaimer in the documentation 12# and/or other materials provided with the distribution. 13# 14# Neither the name of ARM nor the names of its contributors may be used 15# to endorse or promote products derived from this software without specific 16# prior written permission. 17# 18# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28# POSSIBILITY OF SUCH DAMAGE. 29# 30 31# 32# Trusted Firmware Version 33# 34VERSION_MAJOR := 1 35VERSION_MINOR := 2 36 37# Default goal is build all images 38.DEFAULT_GOAL := all 39 40include make_helpers/build_macros.mk 41 42################################################################################ 43# Default values for build configurations 44################################################################################ 45 46# Build verbosity 47V := 0 48# Debug build 49DEBUG := 0 50# Build platform 51DEFAULT_PLAT := fvp 52PLAT := ${DEFAULT_PLAT} 53# SPD choice 54SPD := none 55# Base commit to perform code check on 56BASE_COMMIT := origin/master 57# NS timer register save and restore 58NS_TIMER_SWITCH := 0 59# By default, BL1 acts as the reset handler, not BL31 60RESET_TO_BL31 := 0 61# Include FP registers in cpu context 62CTX_INCLUDE_FPREGS := 0 63# Determine the version of ARM GIC architecture to use for interrupt management 64# in EL3. The platform port can change this value if needed. 65ARM_GIC_ARCH := 2 66# Determine the version of ARM CCI product used in the platform. The platform 67# port can change this value if needed. 68ARM_CCI_PRODUCT_ID := 400 69# Flag used to indicate if ASM_ASSERTION should be enabled for the build. 70# This defaults to being present in DEBUG builds only. 71ASM_ASSERTION := ${DEBUG} 72# Build option to choose whether Trusted firmware uses Coherent memory or not. 73USE_COHERENT_MEM := 1 74# Flag used to choose the power state format viz Extended State-ID or the Original 75# format. 76PSCI_EXTENDED_STATE_ID := 0 77# Default FIP file name 78FIP_NAME := fip.bin 79# Default FWU_FIP file name 80FWU_FIP_NAME := fwu_fip.bin 81# By default, use the -pedantic option in the gcc command line 82DISABLE_PEDANTIC := 0 83# Flags to generate the Chain of Trust 84GENERATE_COT := 0 85CREATE_KEYS := 1 86SAVE_KEYS := 0 87# Flags to build TF with Trusted Boot support 88TRUSTED_BOARD_BOOT := 0 89# By default, consider that the platform's reset address is not programmable. 90# The platform Makefile is free to override this value. 91PROGRAMMABLE_RESET_ADDRESS := 0 92# Build flag to treat usage of deprecated platform and framework APIs as error. 93ERROR_DEPRECATED := 0 94# By default, consider that the platform may release several CPUs out of reset. 95# The platform Makefile is free to override this value. 96COLD_BOOT_SINGLE_CPU := 0 97# Flag to introduce an infinite loop in BL1 just before it exits into the next 98# image. This is meant to help debugging the post-BL2 phase. 99SPIN_ON_BL1_EXIT := 0 100# Build PL011 UART driver in minimal generic UART mode 101PL011_GENERIC_UART := 0 102 103 104################################################################################ 105# Checkpatch script options 106################################################################################ 107 108CHECK_IGNORE := --ignore COMPLEX_MACRO \ 109 --ignore GERRIT_CHANGE_ID \ 110 --ignore GIT_COMMIT_ID 111CHECKPATCH_ARGS := --no-tree --no-signoff ${CHECK_IGNORE} 112CHECKCODE_ARGS := --no-patch --no-tree --no-signoff ${CHECK_IGNORE} 113# Do not check the coding style on C library files 114CHECK_PATHS := $(shell ls -I include -I lib) \ 115 $(addprefix include/,$(shell ls -I stdlib include)) \ 116 $(addprefix lib/,$(shell ls -I stdlib lib)) 117 118 119################################################################################ 120# Process build options 121################################################################################ 122 123# Verbose flag 124ifeq (${V},0) 125 Q=@ 126 CHECKCODE_ARGS += --no-summary --terse 127else 128 Q= 129endif 130export Q 131 132# Process Debug flag 133$(eval $(call add_define,DEBUG)) 134ifneq (${DEBUG}, 0) 135 BUILD_TYPE := debug 136 CFLAGS += -g 137 ASFLAGS += -g -Wa,--gdwarf-2 138 # Use LOG_LEVEL_INFO by default for debug builds 139 LOG_LEVEL := 40 140else 141 BUILD_TYPE := release 142 $(eval $(call add_define,NDEBUG)) 143 # Use LOG_LEVEL_NOTICE by default for release builds 144 LOG_LEVEL := 20 145endif 146 147# Default build string (git branch and commit) 148ifeq (${BUILD_STRING},) 149 BUILD_STRING := $(shell git log -n 1 --pretty=format:"%h") 150endif 151VERSION_STRING := v${VERSION_MAJOR}.${VERSION_MINOR}(${BUILD_TYPE}):${BUILD_STRING} 152 153# The cert_create tool cannot generate certificates individually, so we use the 154# target 'certificates' to create them all 155ifneq (${GENERATE_COT},0) 156 FIP_DEPS += certificates 157 FWU_FIP_DEPS += fwu_certificates 158endif 159 160 161################################################################################ 162# Toolchain 163################################################################################ 164 165CC := ${CROSS_COMPILE}gcc 166CPP := ${CROSS_COMPILE}cpp 167AS := ${CROSS_COMPILE}gcc 168AR := ${CROSS_COMPILE}ar 169LD := ${CROSS_COMPILE}ld 170OC := ${CROSS_COMPILE}objcopy 171OD := ${CROSS_COMPILE}objdump 172NM := ${CROSS_COMPILE}nm 173PP := ${CROSS_COMPILE}gcc -E 174 175ASFLAGS += -nostdinc -ffreestanding -Wa,--fatal-warnings \ 176 -Werror -Wmissing-include-dirs \ 177 -mgeneral-regs-only -D__ASSEMBLY__ \ 178 ${DEFINES} ${INCLUDES} 179CFLAGS += -nostdinc -ffreestanding -Wall \ 180 -Werror -Wmissing-include-dirs \ 181 -mgeneral-regs-only -mstrict-align \ 182 -std=c99 -c -Os \ 183 ${DEFINES} ${INCLUDES} 184CFLAGS += -ffunction-sections -fdata-sections 185 186LDFLAGS += --fatal-warnings -O1 187LDFLAGS += --gc-sections 188 189 190################################################################################ 191# Common sources and include directories 192################################################################################ 193 194BL_COMMON_SOURCES += common/bl_common.c \ 195 common/tf_printf.c \ 196 common/aarch64/debug.S \ 197 lib/aarch64/cache_helpers.S \ 198 lib/aarch64/misc_helpers.S \ 199 lib/aarch64/xlat_helpers.c \ 200 lib/stdlib/std.c \ 201 plat/common/aarch64/platform_helpers.S 202 203INCLUDES += -Iinclude/bl1 \ 204 -Iinclude/bl31 \ 205 -Iinclude/bl31/services \ 206 -Iinclude/common \ 207 -Iinclude/drivers \ 208 -Iinclude/drivers/arm \ 209 -Iinclude/drivers/auth \ 210 -Iinclude/drivers/io \ 211 -Iinclude/drivers/ti/uart \ 212 -Iinclude/lib \ 213 -Iinclude/lib/aarch64 \ 214 -Iinclude/lib/cpus/aarch64 \ 215 -Iinclude/plat/common \ 216 -Iinclude/stdlib \ 217 -Iinclude/stdlib/sys \ 218 ${PLAT_INCLUDES} \ 219 ${SPD_INCLUDES} 220 221 222################################################################################ 223# Generic definitions 224################################################################################ 225 226BUILD_BASE := ./build 227BUILD_PLAT := ${BUILD_BASE}/${PLAT}/${BUILD_TYPE} 228 229PLAT_MAKEFILE := platform.mk 230# Generate the platforms list by recursively searching for all directories 231# under /plat containing a PLAT_MAKEFILE. Append each platform with a `|` 232# char and strip out the final '|'. 233PLATFORMS := $(shell find plat/ -name '${PLAT_MAKEFILE}' -print0 | \ 234 sed -r 's%[^\x00]*\/([^/]*)\/${PLAT_MAKEFILE}\x00%\1|%g' | \ 235 sed -r 's/\|$$//') 236SPDS := $(shell ls -I none services/spd) 237 238# Platforms providing their own TBB makefile may override this value 239INCLUDE_TBBR_MK := 1 240 241 242################################################################################ 243# Include SPD Makefile if one has been specified 244################################################################################ 245 246ifneq (${SPD},none) 247ifdef EL3_PAYLOAD_BASE 248 $(warning "SPD and EL3_PAYLOAD_BASE are incompatible build options.") 249 $(warning "The SPD and its BL32 companion will be present but ignored.") 250endif 251 # We expect to locate an spd.mk under the specified SPD directory 252 SPD_MAKE := $(shell m="services/spd/${SPD}/${SPD}.mk"; [ -f "$$m" ] && echo "$$m") 253 254 ifeq (${SPD_MAKE},) 255 $(error Error: No services/spd/${SPD}/${SPD}.mk located) 256 endif 257 $(info Including ${SPD_MAKE}) 258 include ${SPD_MAKE} 259 260 # If there's BL32 companion for the chosen SPD, we expect that the SPD's 261 # Makefile would set NEED_BL32 to "yes". In this case, the build system 262 # supports two mutually exclusive options: 263 # * BL32 is built from source: then BL32_SOURCES must contain the list 264 # of source files to build BL32 265 # * BL32 is a prebuilt binary: then BL32 must point to the image file 266 # that will be included in the FIP 267 # If both BL32_SOURCES and BL32 are defined, the binary takes precedence 268 # over the sources. 269endif 270 271 272################################################################################ 273# Include the platform specific Makefile after the SPD Makefile (the platform 274# makefile may use all previous definitions in this file) 275################################################################################ 276 277ifeq (${PLAT},) 278 $(error "Error: Unknown platform. Please use PLAT=<platform name> to specify the platform") 279endif 280PLAT_MAKEFILE_FULL := $(shell find plat/ -wholename '*/${PLAT}/${PLAT_MAKEFILE}') 281ifeq ($(PLAT_MAKEFILE_FULL),) 282 $(error "Error: Invalid platform. The following platforms are available: ${PLATFORMS}") 283endif 284 285include ${PLAT_MAKEFILE_FULL} 286 287# If the platform has not defined ENABLE_PLAT_COMPAT, then enable it by default 288ifndef ENABLE_PLAT_COMPAT 289ENABLE_PLAT_COMPAT := 1 290endif 291 292# Include the platform compatibility helpers for PSCI 293ifneq (${ENABLE_PLAT_COMPAT}, 0) 294include plat/compat/plat_compat.mk 295endif 296 297# Include the CPU specific operations makefile. By default all CPU errata 298# workarounds and CPU specific optimisations are disabled. This can be 299# overridden by the platform. 300include lib/cpus/cpu-ops.mk 301 302 303################################################################################ 304# Process platform overrideable behaviour 305################################################################################ 306 307# Check if -pedantic option should be used 308ifeq (${DISABLE_PEDANTIC},0) 309 CFLAGS += -pedantic 310endif 311 312# Using the ARM Trusted Firmware BL2 implies that a BL33 image also needs to be 313# supplied for the FIP and Certificate generation tools. This flag can be 314# overridden by the platform. 315ifdef BL2_SOURCES 316ifndef EL3_PAYLOAD_BASE 317NEED_BL33 ?= yes 318else 319# The BL33 image is not needed when booting an EL3 payload. 320NEED_BL33 := no 321endif 322endif 323 324# Process TBB related flags 325ifneq (${GENERATE_COT},0) 326 # Common cert_create options 327 ifneq (${CREATE_KEYS},0) 328 $(eval CRT_ARGS += -n) 329 $(eval FWU_CRT_ARGS += -n) 330 ifneq (${SAVE_KEYS},0) 331 $(eval CRT_ARGS += -k) 332 $(eval FWU_CRT_ARGS += -k) 333 endif 334 endif 335 # Include TBBR makefile (unless the platform indicates otherwise) 336 ifeq (${INCLUDE_TBBR_MK},1) 337 include make_helpers/tbbr/tbbr_tools.mk 338 endif 339endif 340 341 342################################################################################ 343# Auxiliary tools (fip_create, cert_create, etc) 344################################################################################ 345 346# Variables for use with Certificate Generation Tool 347CRTTOOLPATH ?= tools/cert_create 348CRTTOOL ?= ${CRTTOOLPATH}/cert_create 349 350# Variables for use with Firmware Image Package 351FIPTOOLPATH ?= tools/fip_create 352FIPTOOL ?= ${FIPTOOLPATH}/fip_create 353 354 355################################################################################ 356# Build options checks 357################################################################################ 358 359$(eval $(call assert_boolean,DEBUG)) 360$(eval $(call assert_boolean,NS_TIMER_SWITCH)) 361$(eval $(call assert_boolean,RESET_TO_BL31)) 362$(eval $(call assert_boolean,CTX_INCLUDE_FPREGS)) 363$(eval $(call assert_boolean,ASM_ASSERTION)) 364$(eval $(call assert_boolean,USE_COHERENT_MEM)) 365$(eval $(call assert_boolean,DISABLE_PEDANTIC)) 366$(eval $(call assert_boolean,GENERATE_COT)) 367$(eval $(call assert_boolean,CREATE_KEYS)) 368$(eval $(call assert_boolean,SAVE_KEYS)) 369$(eval $(call assert_boolean,TRUSTED_BOARD_BOOT)) 370$(eval $(call assert_boolean,PROGRAMMABLE_RESET_ADDRESS)) 371$(eval $(call assert_boolean,COLD_BOOT_SINGLE_CPU)) 372$(eval $(call assert_boolean,PSCI_EXTENDED_STATE_ID)) 373$(eval $(call assert_boolean,ERROR_DEPRECATED)) 374$(eval $(call assert_boolean,ENABLE_PLAT_COMPAT)) 375$(eval $(call assert_boolean,SPIN_ON_BL1_EXIT)) 376$(eval $(call assert_boolean,PL011_GENERIC_UART)) 377 378 379################################################################################ 380# Add definitions to the cpp preprocessor based on the current build options. 381# This is done after including the platform specific makefile to allow the 382# platform to overwrite the default options 383################################################################################ 384 385$(eval $(call add_define,PLAT_${PLAT})) 386$(eval $(call add_define,NS_TIMER_SWITCH)) 387$(eval $(call add_define,RESET_TO_BL31)) 388$(eval $(call add_define,CTX_INCLUDE_FPREGS)) 389$(eval $(call add_define,ARM_GIC_ARCH)) 390$(eval $(call add_define,ARM_CCI_PRODUCT_ID)) 391$(eval $(call add_define,ASM_ASSERTION)) 392$(eval $(call add_define,LOG_LEVEL)) 393$(eval $(call add_define,USE_COHERENT_MEM)) 394$(eval $(call add_define,TRUSTED_BOARD_BOOT)) 395$(eval $(call add_define,PROGRAMMABLE_RESET_ADDRESS)) 396$(eval $(call add_define,COLD_BOOT_SINGLE_CPU)) 397$(eval $(call add_define,PSCI_EXTENDED_STATE_ID)) 398$(eval $(call add_define,ERROR_DEPRECATED)) 399$(eval $(call add_define,ENABLE_PLAT_COMPAT)) 400$(eval $(call add_define,SPIN_ON_BL1_EXIT)) 401# Define the EL3_PAYLOAD_BASE flag only if it is provided. 402ifdef EL3_PAYLOAD_BASE 403$(eval $(call add_define,EL3_PAYLOAD_BASE)) 404endif 405$(eval $(call add_define,PL011_GENERIC_UART)) 406 407 408################################################################################ 409# Include BL specific makefiles 410################################################################################ 411 412ifdef BL1_SOURCES 413NEED_BL1 := yes 414include bl1/bl1.mk 415endif 416 417ifdef BL2_SOURCES 418NEED_BL2 := yes 419include bl2/bl2.mk 420endif 421 422ifdef BL2U_SOURCES 423NEED_BL2U := yes 424include bl2u/bl2u.mk 425endif 426 427ifdef BL31_SOURCES 428# When booting an EL3 payload, there is no need to compile the BL31 image nor 429# put it in the FIP. 430ifndef EL3_PAYLOAD_BASE 431NEED_BL31 := yes 432include bl31/bl31.mk 433endif 434endif 435 436 437################################################################################ 438# Build targets 439################################################################################ 440 441.PHONY: all msg_start clean realclean distclean cscope locate-checkpatch checkcodebase checkpatch fiptool fip fwu_fip certtool 442.SUFFIXES: 443 444all: msg_start 445 446msg_start: 447 @echo "Building ${PLAT}" 448 449# Check if deprecated declarations should be treated as error or not. 450ifeq (${ERROR_DEPRECATED},0) 451 CFLAGS += -Wno-error=deprecated-declarations 452endif 453 454# Expand build macros for the different images 455ifeq (${NEED_BL1},yes) 456$(eval $(call MAKE_BL,1)) 457endif 458 459ifeq (${NEED_BL2},yes) 460$(if ${BL2}, $(eval $(call MAKE_TOOL_ARGS,2,${BL2},tb-fw)),\ 461 $(eval $(call MAKE_BL,2,tb-fw))) 462endif 463 464ifeq (${NEED_BL31},yes) 465BL31_SOURCES += ${SPD_SOURCES} 466$(if ${BL31}, $(eval $(call MAKE_TOOL_ARGS,31,${BL31},soc-fw)),\ 467 $(eval $(call MAKE_BL,31,soc-fw))) 468endif 469 470# If a BL32 image is needed but neither BL32 nor BL32_SOURCES is defined, the 471# build system will call FIP_ADD_IMG to print a warning message and abort the 472# process. Note that the dependency on BL32 applies to the FIP only. 473ifeq (${NEED_BL32},yes) 474$(if ${BL32}, $(eval $(call MAKE_TOOL_ARGS,32,${BL32},tos-fw)),\ 475 $(if ${BL32_SOURCES}, $(eval $(call MAKE_BL,32,tos-fw)),\ 476 $(eval $(call FIP_ADD_IMG,BL32,--tos-fw)))) 477endif 478 479# Add the BL33 image if required by the platform 480ifeq (${NEED_BL33},yes) 481$(eval $(call FIP_ADD_IMG,BL33,--nt-fw)) 482endif 483 484ifeq (${NEED_BL2U},yes) 485BL2U_PATH := $(if ${BL2U},${BL2U},$(call IMG_BIN,2u)) 486$(if ${BL2U}, ,$(eval $(call MAKE_BL,2u))) 487$(eval $(call FWU_FIP_ADD_PAYLOAD,${BL2U_PATH},--ap-fwu-cfg)) 488endif 489 490locate-checkpatch: 491ifndef CHECKPATCH 492 $(error "Please set CHECKPATCH to point to the Linux checkpatch.pl file, eg: CHECKPATCH=../linux/script/checkpatch.pl") 493else 494ifeq (,$(wildcard ${CHECKPATCH})) 495 $(error "The file CHECKPATCH points to cannot be found, use eg: CHECKPATCH=../linux/script/checkpatch.pl") 496endif 497endif 498 499clean: 500 @echo " CLEAN" 501 ${Q}rm -rf ${BUILD_PLAT} 502 ${Q}${MAKE} --no-print-directory -C ${FIPTOOLPATH} clean 503 ${Q}${MAKE} PLAT=${PLAT} --no-print-directory -C ${CRTTOOLPATH} clean 504 505realclean distclean: 506 @echo " REALCLEAN" 507 ${Q}rm -rf ${BUILD_BASE} 508 ${Q}rm -f ${CURDIR}/cscope.* 509 ${Q}${MAKE} --no-print-directory -C ${FIPTOOLPATH} clean 510 ${Q}${MAKE} PLAT=${PLAT} --no-print-directory -C ${CRTTOOLPATH} clean 511 512checkcodebase: locate-checkpatch 513 @echo " CHECKING STYLE" 514 @if test -d .git ; then \ 515 git ls-files | grep -v stdlib | while read GIT_FILE ; do ${CHECKPATCH} ${CHECKCODE_ARGS} -f $$GIT_FILE ; done ; \ 516 else \ 517 find . -type f -not -iwholename "*.git*" -not -iwholename "*build*" -not -iwholename "*stdlib*" -exec ${CHECKPATCH} ${CHECKCODE_ARGS} -f {} \; ; \ 518 fi 519 520checkpatch: locate-checkpatch 521 @echo " CHECKING STYLE" 522 ${Q}git log -p ${BASE_COMMIT}..HEAD -- ${CHECK_PATHS} | ${CHECKPATCH} ${CHECKPATCH_ARGS} - || true 523 524certtool: ${CRTTOOL} 525 526.PHONY: ${CRTTOOL} 527${CRTTOOL}: 528 ${Q}${MAKE} PLAT=${PLAT} --no-print-directory -C ${CRTTOOLPATH} 529 @echo 530 @echo "Built $@ successfully" 531 @echo 532 533ifneq (${GENERATE_COT},0) 534certificates: ${CRT_DEPS} ${CRTTOOL} 535 ${Q}${CRTTOOL} ${CRT_ARGS} 536 @echo 537 @echo "Built $@ successfully" 538 @echo "Certificates can be found in ${BUILD_PLAT}" 539 @echo 540endif 541 542${BUILD_PLAT}/${FIP_NAME}: ${FIP_DEPS} ${FIPTOOL} 543 ${Q}${FIPTOOL} --dump ${FIP_ARGS} $@ 544 @echo 545 @echo "Built $@ successfully" 546 @echo 547 548ifneq (${GENERATE_COT},0) 549fwu_certificates: ${FWU_CRT_DEPS} ${CRTTOOL} 550 ${Q}${CRTTOOL} ${FWU_CRT_ARGS} 551 @echo 552 @echo "Built $@ successfully" 553 @echo "FWU certificates can be found in ${BUILD_PLAT}" 554 @echo 555endif 556 557${BUILD_PLAT}/${FWU_FIP_NAME}: ${FWU_FIP_DEPS} ${FIPTOOL} 558 ${Q}${FIPTOOL} --dump ${FWU_FIP_ARGS} $@ 559 @echo 560 @echo "Built $@ successfully" 561 @echo 562 563fiptool: ${FIPTOOL} 564fip: ${BUILD_PLAT}/${FIP_NAME} 565fwu_fip: ${BUILD_PLAT}/${FWU_FIP_NAME} 566 567.PHONY: ${FIPTOOL} 568${FIPTOOL}: 569 ${Q}${MAKE} --no-print-directory -C ${FIPTOOLPATH} 570 571cscope: 572 @echo " CSCOPE" 573 ${Q}find ${CURDIR} -name "*.[chsS]" > cscope.files 574 ${Q}cscope -b -q -k 575 576help: 577 @echo "usage: ${MAKE} PLAT=<${PLATFORMS}> [OPTIONS] [TARGET]" 578 @echo "" 579 @echo "PLAT is used to specify which platform you wish to build." 580 @echo "If no platform is specified, PLAT defaults to: ${DEFAULT_PLAT}" 581 @echo "" 582 @echo "Please refer to the User Guide for a list of all supported options." 583 @echo "Note that the build system doesn't track dependencies for build " 584 @echo "options. Therefore, if any of the build options are changed " 585 @echo "from a previous build, a clean build must be performed." 586 @echo "" 587 @echo "Supported Targets:" 588 @echo " all Build all individual bootloader binaries" 589 @echo " bl1 Build the BL1 binary" 590 @echo " bl2 Build the BL2 binary" 591 @echo " bl2u Build the BL2U binary" 592 @echo " bl31 Build the BL31 binary" 593 @echo " bl32 Build the BL32 binary" 594 @echo " certificates Build the certificates (requires 'GENERATE_COT=1')" 595 @echo " fip Build the Firmware Image Package (FIP)" 596 @echo " fwu_fip Build the FWU Firmware Image Package (FIP)" 597 @echo " checkcodebase Check the coding style of the entire source tree" 598 @echo " checkpatch Check the coding style on changes in the current" 599 @echo " branch against BASE_COMMIT (default origin/master)" 600 @echo " clean Clean the build for the selected platform" 601 @echo " cscope Generate cscope index" 602 @echo " distclean Remove all build artifacts for all platforms" 603 @echo " certtool Build the Certificate generation tool" 604 @echo " fiptool Build the Firmware Image Package(FIP) creation tool" 605 @echo "" 606 @echo "Note: most build targets require PLAT to be set to a specific platform." 607 @echo "" 608 @echo "example: build all targets for the FVP platform:" 609 @echo " CROSS_COMPILE=aarch64-none-elf- make PLAT=fvp all" 610