# # Copyright (c) 2013-2016, ARM Limited and Contributors. All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are met: # # Redistributions of source code must retain the above copyright notice, this # list of conditions and the following disclaimer. # # Redistributions in binary form must reproduce the above copyright notice, # this list of conditions and the following disclaimer in the documentation # and/or other materials provided with the distribution. # # Neither the name of ARM nor the names of its contributors may be used # to endorse or promote products derived from this software without specific # prior written permission. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE # POSSIBILITY OF SUCH DAMAGE. # # # Trusted Firmware Version # VERSION_MAJOR := 1 VERSION_MINOR := 2 # Default goal is build all images .DEFAULT_GOAL := all MAKE_HELPERS_DIRECTORY := make_helpers/ include ${MAKE_HELPERS_DIRECTORY}build_macros.mk include ${MAKE_HELPERS_DIRECTORY}build_env.mk ################################################################################ # Default values for build configurations ################################################################################ # Build verbosity V := 0 # Debug build DEBUG := 0 # Build platform DEFAULT_PLAT := fvp PLAT := ${DEFAULT_PLAT} # SPD choice SPD := none # Base commit to perform code check on BASE_COMMIT := origin/master # NS timer register save and restore NS_TIMER_SWITCH := 0 # By default, BL1 acts as the reset handler, not BL31 RESET_TO_BL31 := 0 # Include FP registers in cpu context CTX_INCLUDE_FPREGS := 0 # Build flag to include AArch32 registers in cpu context save and restore # during world switch. This flag must be set to 0 for AArch64-only platforms. CTX_INCLUDE_AARCH32_REGS := 1 # Determine the version of ARM GIC architecture to use for interrupt management # in EL3. The platform port can change this value if needed. ARM_GIC_ARCH := 2 # Determine the version of ARM CCI product used in the platform. The platform # port can change this value if needed. ARM_CCI_PRODUCT_ID := 400 # Flag used to indicate if ASM_ASSERTION should be enabled for the build. # This defaults to being present in DEBUG builds only. ASM_ASSERTION := ${DEBUG} # Build option to choose whether Trusted firmware uses Coherent memory or not. USE_COHERENT_MEM := 1 # Flag used to choose the power state format viz Extended State-ID or the Original # format. PSCI_EXTENDED_STATE_ID := 0 # Default FIP file name FIP_NAME := fip.bin # Default FWU_FIP file name FWU_FIP_NAME := fwu_fip.bin # By default, use the -pedantic option in the gcc command line DISABLE_PEDANTIC := 0 # Flags to generate the Chain of Trust GENERATE_COT := 0 CREATE_KEYS := 1 SAVE_KEYS := 0 # Flags to build TF with Trusted Boot support TRUSTED_BOARD_BOOT := 0 # By default, consider that the platform's reset address is not programmable. # The platform Makefile is free to override this value. PROGRAMMABLE_RESET_ADDRESS := 0 # Build flag to treat usage of deprecated platform and framework APIs as error. ERROR_DEPRECATED := 0 # By default, consider that the platform may release several CPUs out of reset. # The platform Makefile is free to override this value. COLD_BOOT_SINGLE_CPU := 0 # Flag to introduce an infinite loop in BL1 just before it exits into the next # image. This is meant to help debugging the post-BL2 phase. SPIN_ON_BL1_EXIT := 0 # Build PL011 UART driver in minimal generic UART mode PL011_GENERIC_UART := 0 # Flag to enable Performance Measurement Framework ENABLE_PMF := 0 # Flag to enable PSCI STATs functionality ENABLE_PSCI_STAT := 0 # Whether code and read-only data should be put on separate memory pages. # The platform Makefile is free to override this value. SEPARATE_CODE_AND_RODATA := 0 ################################################################################ # Checkpatch script options ################################################################################ CHECKCODE_ARGS := --no-patch # Do not check the coding style on imported library files or documentation files INC_LIB_DIRS_TO_CHECK := $(sort $(filter-out \ include/lib/libfdt \ include/lib/stdlib, \ $(wildcard include/lib/*))) INC_DIRS_TO_CHECK := $(sort $(filter-out \ include/lib, \ $(wildcard include/*))) LIB_DIRS_TO_CHECK := $(sort $(filter-out \ lib/libfdt \ lib/stdlib, \ $(wildcard lib/*))) ROOT_DIRS_TO_CHECK := $(sort $(filter-out \ lib \ include \ docs \ %.md, \ $(wildcard *))) CHECK_PATHS := ${ROOT_DIRS_TO_CHECK} \ ${INC_DIRS_TO_CHECK} \ ${INC_LIB_DIRS_TO_CHECK} \ ${LIB_DIRS_TO_CHECK} ################################################################################ # Process build options ################################################################################ # Verbose flag ifeq (${V},0) Q:=@ CHECKCODE_ARGS += --no-summary --terse else Q:= endif export Q # Process Debug flag $(eval $(call add_define,DEBUG)) ifneq (${DEBUG}, 0) BUILD_TYPE := debug TF_CFLAGS += -g ASFLAGS += -g -Wa,--gdwarf-2 # Use LOG_LEVEL_INFO by default for debug builds LOG_LEVEL := 40 else BUILD_TYPE := release $(eval $(call add_define,NDEBUG)) # Use LOG_LEVEL_NOTICE by default for release builds LOG_LEVEL := 20 endif # Default build string (git branch and commit) ifeq (${BUILD_STRING},) BUILD_STRING := $(shell git log -n 1 --pretty=format:"%h") endif VERSION_STRING := v${VERSION_MAJOR}.${VERSION_MINOR}(${BUILD_TYPE}):${BUILD_STRING} # The cert_create tool cannot generate certificates individually, so we use the # target 'certificates' to create them all ifneq (${GENERATE_COT},0) FIP_DEPS += certificates FWU_FIP_DEPS += fwu_certificates endif ################################################################################ # Toolchain ################################################################################ CC := ${CROSS_COMPILE}gcc CPP := ${CROSS_COMPILE}cpp AS := ${CROSS_COMPILE}gcc AR := ${CROSS_COMPILE}ar LD := ${CROSS_COMPILE}ld OC := ${CROSS_COMPILE}objcopy OD := ${CROSS_COMPILE}objdump NM := ${CROSS_COMPILE}nm PP := ${CROSS_COMPILE}gcc -E ASFLAGS += -nostdinc -ffreestanding -Wa,--fatal-warnings \ -Werror -Wmissing-include-dirs \ -mgeneral-regs-only -D__ASSEMBLY__ \ ${DEFINES} ${INCLUDES} TF_CFLAGS += -nostdinc -ffreestanding -Wall \ -Werror -Wmissing-include-dirs \ -mgeneral-regs-only -mstrict-align \ -std=c99 -c -Os \ ${DEFINES} ${INCLUDES} TF_CFLAGS += -ffunction-sections -fdata-sections LDFLAGS += --fatal-warnings -O1 LDFLAGS += --gc-sections ################################################################################ # Common sources and include directories ################################################################################ include lib/stdlib/stdlib.mk BL_COMMON_SOURCES += common/bl_common.c \ common/tf_printf.c \ common/aarch64/debug.S \ lib/aarch64/cache_helpers.S \ lib/aarch64/misc_helpers.S \ plat/common/aarch64/platform_helpers.S \ ${STDLIB_SRCS} INCLUDES += -Iinclude/bl1 \ -Iinclude/bl31 \ -Iinclude/common \ -Iinclude/common/aarch64 \ -Iinclude/drivers \ -Iinclude/drivers/arm \ -Iinclude/drivers/auth \ -Iinclude/drivers/io \ -Iinclude/drivers/ti/uart \ -Iinclude/lib \ -Iinclude/lib/aarch64 \ -Iinclude/lib/cpus/aarch64 \ -Iinclude/lib/el3_runtime \ -Iinclude/lib/el3_runtime/aarch64 \ -Iinclude/lib/psci \ -Iinclude/plat/common \ -Iinclude/services \ ${PLAT_INCLUDES} \ ${SPD_INCLUDES} ################################################################################ # Generic definitions ################################################################################ include ${MAKE_HELPERS_DIRECTORY}plat_helpers.mk BUILD_BASE := ./build BUILD_PLAT := ${BUILD_BASE}/${PLAT}/${BUILD_TYPE} SPDS := $(sort $(filter-out none, $(patsubst services/spd/%,%,$(wildcard services/spd/*)))) # Platforms providing their own TBB makefile may override this value INCLUDE_TBBR_MK := 1 ################################################################################ # Include SPD Makefile if one has been specified ################################################################################ ifneq (${SPD},none) ifdef EL3_PAYLOAD_BASE $(warning "SPD and EL3_PAYLOAD_BASE are incompatible build options.") $(warning "The SPD and its BL32 companion will be present but ignored.") endif # We expect to locate an spd.mk under the specified SPD directory SPD_MAKE := $(wildcard services/spd/${SPD}/${SPD}.mk) ifeq (${SPD_MAKE},) $(error Error: No services/spd/${SPD}/${SPD}.mk located) endif $(info Including ${SPD_MAKE}) include ${SPD_MAKE} # If there's BL32 companion for the chosen SPD, we expect that the SPD's # Makefile would set NEED_BL32 to "yes". In this case, the build system # supports two mutually exclusive options: # * BL32 is built from source: then BL32_SOURCES must contain the list # of source files to build BL32 # * BL32 is a prebuilt binary: then BL32 must point to the image file # that will be included in the FIP # If both BL32_SOURCES and BL32 are defined, the binary takes precedence # over the sources. endif ################################################################################ # Include the platform specific Makefile after the SPD Makefile (the platform # makefile may use all previous definitions in this file) ################################################################################ include ${PLAT_MAKEFILE_FULL} # If the platform has not defined ENABLE_PLAT_COMPAT, then enable it by default ifndef ENABLE_PLAT_COMPAT ENABLE_PLAT_COMPAT := 1 endif # Include the platform compatibility helpers for PSCI ifneq (${ENABLE_PLAT_COMPAT}, 0) include plat/compat/plat_compat.mk endif # Include the CPU specific operations makefile, which provides default # values for all CPU errata workarounds and CPU specific optimisations. # This can be overridden by the platform. include lib/cpus/cpu-ops.mk ################################################################################ # Check incompatible options ################################################################################ ifdef EL3_PAYLOAD_BASE ifdef PRELOADED_BL33_BASE $(warning "PRELOADED_BL33_BASE and EL3_PAYLOAD_BASE are \ incompatible build options. EL3_PAYLOAD_BASE has priority.") endif endif ifeq (${NEED_BL33},yes) ifdef EL3_PAYLOAD_BASE $(warning "BL33 image is not needed when option \ BL33_PAYLOAD_BASE is used and won't be added to the FIP file.") endif ifdef PRELOADED_BL33_BASE $(warning "BL33 image is not needed when option \ PRELOADED_BL33_BASE is used and won't be added to the FIP \ file.") endif endif ################################################################################ # Process platform overrideable behaviour ################################################################################ # Check if -pedantic option should be used ifeq (${DISABLE_PEDANTIC},0) TF_CFLAGS += -pedantic endif # Using the ARM Trusted Firmware BL2 implies that a BL33 image also needs to be # supplied for the FIP and Certificate generation tools. This flag can be # overridden by the platform. ifdef BL2_SOURCES ifdef EL3_PAYLOAD_BASE # If booting an EL3 payload there is no need for a BL33 image # in the FIP file. NEED_BL33 := no else ifdef PRELOADED_BL33_BASE # If booting a BL33 preloaded image there is no need of # another one in the FIP file. NEED_BL33 := no else NEED_BL33 ?= yes endif endif endif # Process TBB related flags ifneq (${GENERATE_COT},0) # Common cert_create options ifneq (${CREATE_KEYS},0) $(eval CRT_ARGS += -n) $(eval FWU_CRT_ARGS += -n) ifneq (${SAVE_KEYS},0) $(eval CRT_ARGS += -k) $(eval FWU_CRT_ARGS += -k) endif endif # Include TBBR makefile (unless the platform indicates otherwise) ifeq (${INCLUDE_TBBR_MK},1) include make_helpers/tbbr/tbbr_tools.mk endif endif # Make sure PMF is enabled if PSCI STAT is enabled. ifeq (${ENABLE_PSCI_STAT},1) ENABLE_PMF := 1 endif ################################################################################ # Auxiliary tools (fip_create, cert_create, etc) ################################################################################ # Variables for use with Certificate Generation Tool CRTTOOLPATH ?= tools/cert_create CRTTOOL ?= ${CRTTOOLPATH}/cert_create${BIN_EXT} # Variables for use with Firmware Image Package FIPTOOLPATH ?= tools/fip_create FIPTOOL ?= ${FIPTOOLPATH}/fip_create${BIN_EXT} ################################################################################ # Build options checks ################################################################################ $(eval $(call assert_boolean,DEBUG)) $(eval $(call assert_boolean,NS_TIMER_SWITCH)) $(eval $(call assert_boolean,RESET_TO_BL31)) $(eval $(call assert_boolean,CTX_INCLUDE_FPREGS)) $(eval $(call assert_boolean,CTX_INCLUDE_AARCH32_REGS)) $(eval $(call assert_boolean,ASM_ASSERTION)) $(eval $(call assert_boolean,USE_COHERENT_MEM)) $(eval $(call assert_boolean,DISABLE_PEDANTIC)) $(eval $(call assert_boolean,GENERATE_COT)) $(eval $(call assert_boolean,CREATE_KEYS)) $(eval $(call assert_boolean,SAVE_KEYS)) $(eval $(call assert_boolean,TRUSTED_BOARD_BOOT)) $(eval $(call assert_boolean,PROGRAMMABLE_RESET_ADDRESS)) $(eval $(call assert_boolean,COLD_BOOT_SINGLE_CPU)) $(eval $(call assert_boolean,PSCI_EXTENDED_STATE_ID)) $(eval $(call assert_boolean,ERROR_DEPRECATED)) $(eval $(call assert_boolean,ENABLE_PLAT_COMPAT)) $(eval $(call assert_boolean,SPIN_ON_BL1_EXIT)) $(eval $(call assert_boolean,PL011_GENERIC_UART)) $(eval $(call assert_boolean,ENABLE_PMF)) $(eval $(call assert_boolean,ENABLE_PSCI_STAT)) $(eval $(call assert_boolean,SEPARATE_CODE_AND_RODATA)) ################################################################################ # Add definitions to the cpp preprocessor based on the current build options. # This is done after including the platform specific makefile to allow the # platform to overwrite the default options ################################################################################ $(eval $(call add_define,PLAT_${PLAT})) $(eval $(call add_define,SPD_${SPD})) $(eval $(call add_define,NS_TIMER_SWITCH)) $(eval $(call add_define,RESET_TO_BL31)) $(eval $(call add_define,CTX_INCLUDE_FPREGS)) $(eval $(call add_define,CTX_INCLUDE_AARCH32_REGS)) $(eval $(call add_define,ARM_GIC_ARCH)) $(eval $(call add_define,ARM_CCI_PRODUCT_ID)) $(eval $(call add_define,ASM_ASSERTION)) $(eval $(call add_define,LOG_LEVEL)) $(eval $(call add_define,USE_COHERENT_MEM)) $(eval $(call add_define,TRUSTED_BOARD_BOOT)) $(eval $(call add_define,PROGRAMMABLE_RESET_ADDRESS)) $(eval $(call add_define,COLD_BOOT_SINGLE_CPU)) $(eval $(call add_define,PSCI_EXTENDED_STATE_ID)) $(eval $(call add_define,ERROR_DEPRECATED)) $(eval $(call add_define,ENABLE_PLAT_COMPAT)) $(eval $(call add_define,SPIN_ON_BL1_EXIT)) $(eval $(call add_define,PL011_GENERIC_UART)) $(eval $(call add_define,ENABLE_PMF)) $(eval $(call add_define,ENABLE_PSCI_STAT)) $(eval $(call add_define,SEPARATE_CODE_AND_RODATA)) # Define the EL3_PAYLOAD_BASE flag only if it is provided. ifdef EL3_PAYLOAD_BASE $(eval $(call add_define,EL3_PAYLOAD_BASE)) else # Define the PRELOADED_BL33_BASE flag only if it is provided and # EL3_PAYLOAD_BASE is not defined, as it has priority. ifdef PRELOADED_BL33_BASE $(eval $(call add_define,PRELOADED_BL33_BASE)) endif endif ################################################################################ # Include BL specific makefiles ################################################################################ ifdef BL1_SOURCES NEED_BL1 := yes include bl1/bl1.mk endif ifdef BL2_SOURCES NEED_BL2 := yes include bl2/bl2.mk endif ifdef BL2U_SOURCES NEED_BL2U := yes include bl2u/bl2u.mk endif ifdef BL31_SOURCES # When booting an EL3 payload, there is no need to compile the BL31 image nor # put it in the FIP. ifndef EL3_PAYLOAD_BASE NEED_BL31 := yes include bl31/bl31.mk endif endif ################################################################################ # Build targets ################################################################################ .PHONY: all msg_start clean realclean distclean cscope locate-checkpatch checkcodebase checkpatch fiptool fip fwu_fip certtool .SUFFIXES: all: msg_start msg_start: @echo "Building ${PLAT}" # Check if deprecated declarations should be treated as error or not. ifeq (${ERROR_DEPRECATED},0) TF_CFLAGS += -Wno-error=deprecated-declarations endif # Expand build macros for the different images ifeq (${NEED_BL1},yes) $(eval $(call MAKE_BL,1)) endif ifeq (${NEED_BL2},yes) $(if ${BL2}, $(eval $(call MAKE_TOOL_ARGS,2,${BL2},tb-fw)),\ $(eval $(call MAKE_BL,2,tb-fw))) endif ifeq (${NEED_BL31},yes) BL31_SOURCES += ${SPD_SOURCES} $(if ${BL31}, $(eval $(call MAKE_TOOL_ARGS,31,${BL31},soc-fw)),\ $(eval $(call MAKE_BL,31,soc-fw))) endif # If a BL32 image is needed but neither BL32 nor BL32_SOURCES is defined, the # build system will call FIP_ADD_IMG to print a warning message and abort the # process. Note that the dependency on BL32 applies to the FIP only. ifeq (${NEED_BL32},yes) $(if ${BL32}, $(eval $(call MAKE_TOOL_ARGS,32,${BL32},tos-fw)),\ $(if ${BL32_SOURCES}, $(eval $(call MAKE_BL,32,tos-fw)),\ $(eval $(call FIP_ADD_IMG,BL32,--tos-fw)))) endif # Add the BL33 image if required by the platform ifeq (${NEED_BL33},yes) $(eval $(call FIP_ADD_IMG,BL33,--nt-fw)) endif ifeq (${NEED_BL2U},yes) BL2U_PATH := $(if ${BL2U},${BL2U},$(call IMG_BIN,2u)) $(if ${BL2U}, ,$(eval $(call MAKE_BL,2u))) $(eval $(call FWU_FIP_ADD_PAYLOAD,${BL2U_PATH},--ap-fwu-cfg)) endif locate-checkpatch: ifndef CHECKPATCH $(error "Please set CHECKPATCH to point to the Linux checkpatch.pl file, eg: CHECKPATCH=../linux/script/checkpatch.pl") else ifeq (,$(wildcard ${CHECKPATCH})) $(error "The file CHECKPATCH points to cannot be found, use eg: CHECKPATCH=../linux/script/checkpatch.pl") endif endif clean: @echo " CLEAN" $(call SHELL_REMOVE_DIR,${BUILD_PLAT}) ${Q}${MAKE} --no-print-directory -C ${FIPTOOLPATH} clean ${Q}${MAKE} PLAT=${PLAT} --no-print-directory -C ${CRTTOOLPATH} clean realclean distclean: @echo " REALCLEAN" $(call SHELL_REMOVE_DIR,${BUILD_BASE}) $(call SHELL_DELETE_ALL, ${CURDIR}/cscope.*) ${Q}${MAKE} --no-print-directory -C ${FIPTOOLPATH} clean ${Q}${MAKE} PLAT=${PLAT} --no-print-directory -C ${CRTTOOLPATH} clean checkcodebase: locate-checkpatch @echo " CHECKING STYLE" @if test -d .git ; then \ git ls-files | grep -E -v libfdt\|stdlib\|docs\|\.md | \ while read GIT_FILE ; \ do ${CHECKPATCH} ${CHECKCODE_ARGS} -f $$GIT_FILE ; \ done ; \ else \ find . -type f -not -iwholename "*.git*" \ -not -iwholename "*build*" \ -not -iwholename "*libfdt*" \ -not -iwholename "*stdlib*" \ -not -iwholename "*docs*" \ -not -iwholename "*.md" \ -exec ${CHECKPATCH} ${CHECKCODE_ARGS} -f {} \; ; \ fi checkpatch: locate-checkpatch @echo " CHECKING STYLE" ${Q}git log -p ${BASE_COMMIT}..HEAD -- ${CHECK_PATHS} | ${CHECKPATCH} - || true certtool: ${CRTTOOL} .PHONY: ${CRTTOOL} ${CRTTOOL}: ${Q}${MAKE} PLAT=${PLAT} --no-print-directory -C ${CRTTOOLPATH} @${ECHO_BLANK_LINE} @echo "Built $@ successfully" @${ECHO_BLANK_LINE} ifneq (${GENERATE_COT},0) certificates: ${CRT_DEPS} ${CRTTOOL} ${Q}${CRTTOOL} ${CRT_ARGS} @${ECHO_BLANK_LINE} @echo "Built $@ successfully" @echo "Certificates can be found in ${BUILD_PLAT}" @${ECHO_BLANK_LINE} endif ${BUILD_PLAT}/${FIP_NAME}: ${FIP_DEPS} ${FIPTOOL} ${Q}${FIPTOOL} --dump ${FIP_ARGS} $@ @${ECHO_BLANK_LINE} @echo "Built $@ successfully" @${ECHO_BLANK_LINE} ifneq (${GENERATE_COT},0) fwu_certificates: ${FWU_CRT_DEPS} ${CRTTOOL} ${Q}${CRTTOOL} ${FWU_CRT_ARGS} @echo @echo "Built $@ successfully" @echo "FWU certificates can be found in ${BUILD_PLAT}" @echo endif ${BUILD_PLAT}/${FWU_FIP_NAME}: ${FWU_FIP_DEPS} ${FIPTOOL} ${Q}${FIPTOOL} --dump ${FWU_FIP_ARGS} $@ @echo @echo "Built $@ successfully" @echo fiptool: ${FIPTOOL} fip: ${BUILD_PLAT}/${FIP_NAME} fwu_fip: ${BUILD_PLAT}/${FWU_FIP_NAME} .PHONY: ${FIPTOOL} ${FIPTOOL}: ${Q}${MAKE} --no-print-directory -C ${FIPTOOLPATH} cscope: @echo " CSCOPE" ${Q}find ${CURDIR} -name "*.[chsS]" > cscope.files ${Q}cscope -b -q -k help: @echo "usage: ${MAKE} PLAT=<${PLATFORM_LIST}> [OPTIONS] [TARGET]" @echo "" @echo "PLAT is used to specify which platform you wish to build." @echo "If no platform is specified, PLAT defaults to: ${DEFAULT_PLAT}" @echo "" @echo "Please refer to the User Guide for a list of all supported options." @echo "Note that the build system doesn't track dependencies for build " @echo "options. Therefore, if any of the build options are changed " @echo "from a previous build, a clean build must be performed." @echo "" @echo "Supported Targets:" @echo " all Build all individual bootloader binaries" @echo " bl1 Build the BL1 binary" @echo " bl2 Build the BL2 binary" @echo " bl2u Build the BL2U binary" @echo " bl31 Build the BL31 binary" @echo " bl32 Build the BL32 binary" @echo " certificates Build the certificates (requires 'GENERATE_COT=1')" @echo " fip Build the Firmware Image Package (FIP)" @echo " fwu_fip Build the FWU Firmware Image Package (FIP)" @echo " checkcodebase Check the coding style of the entire source tree" @echo " checkpatch Check the coding style on changes in the current" @echo " branch against BASE_COMMIT (default origin/master)" @echo " clean Clean the build for the selected platform" @echo " cscope Generate cscope index" @echo " distclean Remove all build artifacts for all platforms" @echo " certtool Build the Certificate generation tool" @echo " fiptool Build the Firmware Image Package(FIP) creation tool" @echo "" @echo "Note: most build targets require PLAT to be set to a specific platform." @echo "" @echo "example: build all targets for the FVP platform:" @echo " CROSS_COMPILE=aarch64-none-elf- make PLAT=fvp all"