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Achin Gupta4f6ad662013-10-25 09:08:21 +01001#
Antonio Nino Diazcbccdbf2019-01-21 11:53:29 +00002# Copyright (c) 2013-2019, ARM Limited and Contributors. All rights reserved.
Achin Gupta4f6ad662013-10-25 09:08:21 +01003#
dp-armfa3cf0b2017-05-03 09:38:09 +01004# SPDX-License-Identifier: BSD-3-Clause
Achin Gupta4f6ad662013-10-25 09:08:21 +01005#
6
Jeenu Viswambharan19a0ace2014-05-15 14:40:58 +01007#
Juan Castillo04be3a52014-06-30 11:41:46 +01008# Trusted Firmware Version
9#
Soby Mathewd42eaee2018-10-01 16:16:34 +010010VERSION_MAJOR := 2
Soby Mathew1ca22762019-03-26 15:51:59 +000011VERSION_MINOR := 1
Juan Castillo04be3a52014-06-30 11:41:46 +010012
Juan Castillo396644b2015-10-22 11:34:44 +010013# Default goal is build all images
14.DEFAULT_GOAL := all
15
Douglas Raillard527cd902016-12-28 14:47:50 +000016# 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.
19MAKEOVERRIDES =
20
Evan Lloydf2697142015-12-02 18:17:37 +000021MAKE_HELPERS_DIRECTORY := make_helpers/
22include ${MAKE_HELPERS_DIRECTORY}build_macros.mk
Evan Lloyda71d2592015-12-02 18:56:06 +000023include ${MAKE_HELPERS_DIRECTORY}build_env.mk
Juan Castilloa3487d12015-08-18 14:23:04 +010024
25################################################################################
Jeenu Viswambharan615ff392016-10-24 14:31:51 +010026# Default values for build configurations, and their dependencies
Juan Castilloa3487d12015-08-18 14:23:04 +010027################################################################################
Jeenu Viswambharan19a0ace2014-05-15 14:40:58 +010028
Jeenu Viswambharan615ff392016-10-24 14:31:51 +010029include ${MAKE_HELPERS_DIRECTORY}defaults.mk
dp-arm3cac7862016-09-19 11:18:44 +010030
Antonio Nino Diaz808c2292017-04-18 15:16:05 +010031# Assertions enabled for DEBUG builds by default
Antonio Nino Diaz808c2292017-04-18 15:16:05 +010032ENABLE_ASSERTIONS := ${DEBUG}
Jeenu Viswambharan615ff392016-10-24 14:31:51 +010033ENABLE_PMF := ${ENABLE_RUNTIME_INSTRUMENTATION}
34PLAT := ${DEFAULT_PLAT}
Achin Gupta4f6ad662013-10-25 09:08:21 +010035
Juan Castilloa3487d12015-08-18 14:23:04 +010036################################################################################
37# Checkpatch script options
38################################################################################
39
Sandrine Bailleux0b5a1582016-06-02 11:19:59 +010040CHECKCODE_ARGS := --no-patch
Dan Handleyd7b59e42016-06-02 17:15:13 +010041# Do not check the coding style on imported library files or documentation files
42INC_LIB_DIRS_TO_CHECK := $(sort $(filter-out \
Dan Handley3a355712016-06-02 18:21:02 +010043 include/lib/libfdt \
Roberto Vargas0f8f9852018-05-08 10:27:10 +010044 include/lib/libc, \
Dan Handleyd7b59e42016-06-02 17:15:13 +010045 $(wildcard include/lib/*)))
46INC_DIRS_TO_CHECK := $(sort $(filter-out \
47 include/lib, \
48 $(wildcard include/*)))
49LIB_DIRS_TO_CHECK := $(sort $(filter-out \
dp-arme3cc8382017-05-04 12:15:35 +010050 lib/compiler-rt \
Antonio Nino Diazd84f88e2017-01-16 17:20:45 +000051 lib/libfdt% \
Roberto Vargas0f8f9852018-05-08 10:27:10 +010052 lib/libc, \
Dan Handleyd7b59e42016-06-02 17:15:13 +010053 $(wildcard lib/*)))
54ROOT_DIRS_TO_CHECK := $(sort $(filter-out \
55 lib \
56 include \
57 docs \
Paul Beesleyadfab5b2019-03-07 16:42:31 +000058 %.rst, \
Dan Handleyd7b59e42016-06-02 17:15:13 +010059 $(wildcard *)))
60CHECK_PATHS := ${ROOT_DIRS_TO_CHECK} \
61 ${INC_DIRS_TO_CHECK} \
62 ${INC_LIB_DIRS_TO_CHECK} \
63 ${LIB_DIRS_TO_CHECK}
Ian Spray36eaaf32014-01-30 17:25:28 +000064
Juan Castilloa3487d12015-08-18 14:23:04 +010065
66################################################################################
67# Process build options
68################################################################################
69
70# Verbose flag
Jeenu Viswambharan19a0ace2014-05-15 14:40:58 +010071ifeq (${V},0)
Evan Lloydf4ba5ca2015-12-03 09:47:51 +000072 Q:=@
Andre Przywaracf2bb082018-09-27 10:56:05 +010073 ECHO:=@echo
Juan Castilloa3487d12015-08-18 14:23:04 +010074 CHECKCODE_ARGS += --no-summary --terse
Achin Gupta4f6ad662013-10-25 09:08:21 +010075else
Evan Lloydf4ba5ca2015-12-03 09:47:51 +000076 Q:=
Antonio Nino Diazffd122b2018-10-19 15:44:30 +010077 ECHO:=$(ECHO_QUIET)
Andre Przywaracf2bb082018-09-27 10:56:05 +010078endif
79
80ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),)
81 Q:=@
Antonio Nino Diazffd122b2018-10-19 15:44:30 +010082 ECHO:=$(ECHO_QUIET)
Achin Gupta4f6ad662013-10-25 09:08:21 +010083endif
Andre Przywaracf2bb082018-09-27 10:56:05 +010084
85export Q ECHO
Jeenu Viswambharan2f2cef42014-02-19 09:38:18 +000086
Juan Castilloa3487d12015-08-18 14:23:04 +010087# Process Debug flag
88$(eval $(call add_define,DEBUG))
James Morrisseyeaaeece2013-11-01 13:56:59 +000089ifneq (${DEBUG}, 0)
Juan Castilloa3487d12015-08-18 14:23:04 +010090 BUILD_TYPE := debug
Sandrine Bailleuxf5fdbcc2016-04-11 13:01:17 +010091 TF_CFLAGS += -g
Roberto Vargas69a01e72018-04-16 11:29:45 +010092
93 ifneq ($(findstring clang,$(notdir $(CC))),)
94 ASFLAGS += -g
95 else
96 ASFLAGS += -g -Wa,--gdwarf-2
97 endif
98
Juan Castilloa3487d12015-08-18 14:23:04 +010099 # Use LOG_LEVEL_INFO by default for debug builds
100 LOG_LEVEL := 40
James Morrisseyeaaeece2013-11-01 13:56:59 +0000101else
Juan Castilloa3487d12015-08-18 14:23:04 +0100102 BUILD_TYPE := release
Juan Castilloa3487d12015-08-18 14:23:04 +0100103 # Use LOG_LEVEL_NOTICE by default for release builds
104 LOG_LEVEL := 20
James Morrisseyeaaeece2013-11-01 13:56:59 +0000105endif
106
Juan Castillo04be3a52014-06-30 11:41:46 +0100107# Default build string (git branch and commit)
108ifeq (${BUILD_STRING},)
Masahiro Yamadaf10adde2017-02-03 11:47:27 +0900109 BUILD_STRING := $(shell git describe --always --dirty --tags 2> /dev/null)
Juan Castillo04be3a52014-06-30 11:41:46 +0100110endif
Juan Castillo04be3a52014-06-30 11:41:46 +0100111VERSION_STRING := v${VERSION_MAJOR}.${VERSION_MINOR}(${BUILD_TYPE}):${BUILD_STRING}
112
Juan Castilloa3487d12015-08-18 14:23:04 +0100113# The cert_create tool cannot generate certificates individually, so we use the
114# target 'certificates' to create them all
115ifneq (${GENERATE_COT},0)
116 FIP_DEPS += certificates
Yatharth Kochard1a93432015-10-12 12:33:47 +0100117 FWU_FIP_DEPS += fwu_certificates
Juan Castilloa3487d12015-08-18 14:23:04 +0100118endif
119
120
121################################################################################
122# Toolchain
123################################################################################
124
dp-arme95aaa62017-05-02 11:09:11 +0100125HOSTCC := gcc
126export HOSTCC
127
Juan Castilloa3487d12015-08-18 14:23:04 +0100128CC := ${CROSS_COMPILE}gcc
129CPP := ${CROSS_COMPILE}cpp
130AS := ${CROSS_COMPILE}gcc
131AR := ${CROSS_COMPILE}ar
Roberto Vargas1fd0d1b2018-04-13 14:26:47 +0100132LINKER := ${CROSS_COMPILE}ld
Juan Castilloa3487d12015-08-18 14:23:04 +0100133OC := ${CROSS_COMPILE}objcopy
134OD := ${CROSS_COMPILE}objdump
135NM := ${CROSS_COMPILE}nm
136PP := ${CROSS_COMPILE}gcc -E
Soby Mathewab4181d2017-12-14 17:44:56 +0000137DTC := dtc
Juan Castilloa3487d12015-08-18 14:23:04 +0100138
Julius Wernerb1f64a72018-01-10 15:12:47 -0800139# Use ${LD}.bfd instead if it exists (as absolute path or together with $PATH).
140ifneq ($(strip $(wildcard ${LD}.bfd) \
Roberto Vargas1fd0d1b2018-04-13 14:26:47 +0100141 $(foreach dir,$(subst :, ,${PATH}),$(wildcard ${dir}/${LINKER}.bfd))),)
142LINKER := ${LINKER}.bfd
Julius Wernerb1f64a72018-01-10 15:12:47 -0800143endif
144
Etienne Carriere1374fcb2017-11-08 13:48:40 +0100145ifeq (${ARM_ARCH_MAJOR},7)
146target32-directive = -target arm-none-eabi
147# Will set march32-directive from platform configuration
148else
149target32-directive = -target armv8a-none-eabi
Alexei Fedorovb567e5d2019-03-11 16:51:47 +0000150
151# Set the compiler's target architecture profile based on ARM_ARCH_MINOR option
152ifeq (${ARM_ARCH_MINOR},0)
Sandrine Bailleux896da5b2017-11-24 08:43:40 +0000153march32-directive = -march=armv8-a
Alexei Fedorovb567e5d2019-03-11 16:51:47 +0000154march64-directive = -march=armv8-a
155else
156march32-directive = -march=armv8.${ARM_ARCH_MINOR}-a
157march64-directive = -march=armv8.${ARM_ARCH_MINOR}-a
158endif
Etienne Carriere1374fcb2017-11-08 13:48:40 +0100159endif
160
Varun Wadekardbbca2f2018-12-12 15:22:27 -0800161ifneq ($(findstring armclang,$(notdir $(CC))),)
Etienne Carriere1374fcb2017-11-08 13:48:40 +0100162TF_CFLAGS_aarch32 = -target arm-arm-none-eabi $(march32-directive)
Alexei Fedorovb567e5d2019-03-11 16:51:47 +0000163TF_CFLAGS_aarch64 = -target aarch64-arm-none-eabi $(march64-directive)
Roberto Vargas1fd0d1b2018-04-13 14:26:47 +0100164LD = $(LINKER)
Roberto Vargas69a01e72018-04-16 11:29:45 +0100165AS = $(CC) -c -x assembler-with-cpp $(TF_CFLAGS_$(ARCH))
Roberto Vargas48df32d2018-05-10 13:38:19 +0100166CPP = $(CC) -E $(TF_CFLAGS_$(ARCH))
167PP = $(CC) -E $(TF_CFLAGS_$(ARCH))
dp-armb3bfd342017-05-03 16:30:32 +0100168else ifneq ($(findstring clang,$(notdir $(CC))),)
Yann Gautier60af71c2018-12-18 10:46:34 +0100169TF_CFLAGS_aarch32 = $(target32-directive) $(march32-directive)
Alexei Fedorovb567e5d2019-03-11 16:51:47 +0000170TF_CFLAGS_aarch64 = -target aarch64-elf $(march64-directive)
Roberto Vargas1fd0d1b2018-04-13 14:26:47 +0100171LD = $(LINKER)
Roberto Vargas69a01e72018-04-16 11:29:45 +0100172AS = $(CC) -c -x assembler-with-cpp $(TF_CFLAGS_$(ARCH))
Roberto Vargas48df32d2018-05-10 13:38:19 +0100173CPP = $(CC) -E
174PP = $(CC) -E
dp-arm320e8442017-05-02 12:00:08 +0100175else
Etienne Carriere1374fcb2017-11-08 13:48:40 +0100176TF_CFLAGS_aarch32 = $(march32-directive)
Alexei Fedorovb567e5d2019-03-11 16:51:47 +0000177TF_CFLAGS_aarch64 = $(march64-directive)
Roberto Vargas1fd0d1b2018-04-13 14:26:47 +0100178LD = $(LINKER)
dp-arm320e8442017-05-02 12:00:08 +0100179endif
180
Antonio Nino Diaz80914a82018-08-08 16:28:43 +0100181ifeq (${AARCH32_INSTRUCTION_SET},A32)
182TF_CFLAGS_aarch32 += -marm
183else ifeq (${AARCH32_INSTRUCTION_SET},T32)
184TF_CFLAGS_aarch32 += -mthumb
185else
186$(error Error: Unknown AArch32 instruction set ${AARCH32_INSTRUCTION_SET})
187endif
188
Sandrine Bailleux1aa72ec2018-07-03 09:14:45 +0200189TF_CFLAGS_aarch32 += -mno-unaligned-access
dp-arm320e8442017-05-02 12:00:08 +0100190TF_CFLAGS_aarch64 += -mgeneral-regs-only -mstrict-align
Soby Mathewa1941252016-05-05 14:33:33 +0100191
Etienne Carriere1374fcb2017-11-08 13:48:40 +0100192ASFLAGS_aarch32 = $(march32-directive)
Alexei Fedorovb567e5d2019-03-11 16:51:47 +0000193ASFLAGS_aarch64 = $(march64-directive)
Antonio Nino Diaz25cda672019-02-19 11:53:51 +0000194
Yann Gautier82b2f8c2018-12-10 18:00:26 +0100195WARNING1 := -Wextra
196WARNING1 += -Wunused -Wno-unused-parameter
197WARNING1 += -Wmissing-declarations
198WARNING1 += -Wmissing-format-attribute
199WARNING1 += -Wmissing-prototypes
200WARNING1 += -Wold-style-definition
201WARNING1 += -Wunused-but-set-variable
202WARNING1 += -Wunused-const-variable
203
204WARNING2 := -Waggregate-return
205WARNING2 += -Wcast-align
206WARNING2 += -Wdisabled-optimization
207WARNING2 += -Wnested-externs
208WARNING2 += -Wshadow
209WARNING2 += -Wlogical-op
210WARNING2 += -Wmissing-field-initializers
211WARNING2 += -Wsign-compare
212WARNING2 += -Wmaybe-uninitialized
213
214WARNING3 := -Wbad-function-cast
215WARNING3 += -Wcast-qual
216WARNING3 += -Wconversion
217WARNING3 += -Wpacked
218WARNING3 += -Wpadded
219WARNING3 += -Wpointer-arith
220WARNING3 += -Wredundant-decls
221WARNING3 += -Wswitch-default
222WARNING3 += -Wpacked-bitfield-compat
223WARNING3 += -Wvla
224
225ifeq (${W},1)
226WARNINGS := $(WARNING1)
227else ifeq (${W},2)
228WARNINGS := $(WARNING1) $(WARNING2)
229else ifeq (${W},3)
230WARNINGS := $(WARNING1) $(WARNING2) $(WARNING3)
231endif
232
Yann Gautier957c3532018-12-10 18:08:53 +0100233ifneq (${E},0)
234ERRORS := -Werror
235endif
236
Roberto Vargasd51207e2018-06-04 15:15:04 +0100237CPPFLAGS = ${DEFINES} ${INCLUDES} ${MBEDTLS_INC} -nostdinc \
Yann Gautier957c3532018-12-10 18:08:53 +0100238 -Wmissing-include-dirs $(ERRORS) $(WARNINGS)
Masahiro Yamada0dec9fa2016-12-22 12:51:53 +0900239ASFLAGS += $(CPPFLAGS) $(ASFLAGS_$(ARCH)) \
240 -D__ASSEMBLY__ -ffreestanding \
241 -Wa,--fatal-warnings
242TF_CFLAGS += $(CPPFLAGS) $(TF_CFLAGS_$(ARCH)) \
dp-armc8898cf2017-05-03 16:30:54 +0100243 -ffreestanding -fno-builtin -Wall -std=gnu99 \
244 -Os -ffunction-sections -fdata-sections
Juan Castilloa3487d12015-08-18 14:23:04 +0100245
david cunado34ab6092017-11-30 21:58:01 +0000246GCC_V_OUTPUT := $(shell $(CC) -v 2>&1)
david cunado34ab6092017-11-30 21:58:01 +0000247
Varun Wadekar4d034c52019-01-11 14:47:48 -0800248ifneq ($(findstring armlink,$(notdir $(LD))),)
249TF_LDFLAGS += --diag_error=warning --lto_level=O1
250TF_LDFLAGS += --remove --info=unused,unusedsymbols
251else
Douglas Raillardd0c82732017-06-22 14:44:48 +0100252TF_LDFLAGS += --fatal-warnings -O1
253TF_LDFLAGS += --gc-sections
Varun Wadekar4d034c52019-01-11 14:47:48 -0800254endif
Douglas Raillardd0c82732017-06-22 14:44:48 +0100255TF_LDFLAGS += $(TF_LDFLAGS_$(ARCH))
Juan Castilloa3487d12015-08-18 14:23:04 +0100256
Nishanth Menon4ac02ba2016-10-14 01:13:57 +0000257DTC_FLAGS += -I dts -O dtb
Manish Pandeye6c5a232019-01-21 14:50:10 +0000258DTC_CPPFLAGS += -nostdinc -Iinclude -undef -x assembler-with-cpp
Nishanth Menon4ac02ba2016-10-14 01:13:57 +0000259
Juan Castilloa3487d12015-08-18 14:23:04 +0100260################################################################################
261# Common sources and include directories
262################################################################################
dp-arme3cc8382017-05-04 12:15:35 +0100263include lib/compiler-rt/compiler-rt.mk
Juan Castilloa3487d12015-08-18 14:23:04 +0100264
265BL_COMMON_SOURCES += common/bl_common.c \
Soby Mathewaaf15f52017-09-04 11:49:29 +0100266 common/tf_log.c \
Soby Mathewa1941252016-05-05 14:33:33 +0100267 common/${ARCH}/debug.S \
Julius Werner03020da2018-11-27 22:10:56 -0800268 drivers/console/multi_console.c \
Soby Mathewa1941252016-05-05 14:33:33 +0100269 lib/${ARCH}/cache_helpers.S \
270 lib/${ARCH}/misc_helpers.S \
Soby Mathew2f38ce32018-02-08 17:45:12 +0000271 plat/common/plat_bl_common.c \
Soby Mathewaaf15f52017-09-04 11:49:29 +0100272 plat/common/plat_log_common.c \
dp-arm230011c2017-03-07 11:02:47 +0000273 plat/common/${ARCH}/plat_common.c \
Soby Mathewa1941252016-05-05 14:33:33 +0100274 plat/common/${ARCH}/platform_helpers.S \
Roberto Vargas0f8f9852018-05-08 10:27:10 +0100275 ${COMPILER_RT_SRCS}
Ryan Harkind7a6b0f2014-01-13 14:40:13 +0000276
Antonio Nino Diazeea20fc2018-08-16 15:42:44 +0100277ifeq ($(notdir $(CC)),armclang)
278BL_COMMON_SOURCES += lib/${ARCH}/armclang_printf.S
279endif
280
Yann Gautier2cf1dbc2018-06-18 16:00:23 +0200281INCLUDES += -Iinclude \
Antonio Nino Diaz8d1ade62018-12-17 17:20:57 +0000282 -Iinclude/arch/${ARCH} \
Antonio Nino Diaze0f90632018-12-14 00:18:21 +0000283 -Iinclude/lib/cpus/${ARCH} \
284 -Iinclude/lib/el3_runtime/${ARCH} \
285 ${PLAT_INCLUDES} \
286 ${SPD_INCLUDES}
287
Antonio Nino Diazc3a2cf22018-11-19 11:48:30 +0000288include common/backtrace/backtrace.mk
289
Juan Castilloa3487d12015-08-18 14:23:04 +0100290################################################################################
291# Generic definitions
292################################################################################
293
Evan Lloydf2697142015-12-02 18:17:37 +0000294include ${MAKE_HELPERS_DIRECTORY}plat_helpers.mk
295
Ryan Harkin25cff832014-01-13 12:37:03 +0000296BUILD_BASE := ./build
297BUILD_PLAT := ${BUILD_BASE}/${PLAT}/${BUILD_TYPE}
Achin Gupta4f6ad662013-10-25 09:08:21 +0100298
Evan Lloydf2697142015-12-02 18:17:37 +0000299SPDS := $(sort $(filter-out none, $(patsubst services/spd/%,%,$(wildcard services/spd/*))))
Ryan Harkin72ee3312014-01-15 16:55:07 +0000300
Juan Castilloa3487d12015-08-18 14:23:04 +0100301# Platforms providing their own TBB makefile may override this value
302INCLUDE_TBBR_MK := 1
303
Jeenu Viswambharane5c39fd2014-05-16 11:38:10 +0100304
Juan Castilloa3487d12015-08-18 14:23:04 +0100305################################################################################
306# Include SPD Makefile if one has been specified
307################################################################################
308
309ifneq (${SPD},none)
Soby Mathewa1941252016-05-05 14:33:33 +0100310ifeq (${ARCH},aarch32)
Sandrine Bailleux247e3392018-10-03 14:56:38 +0200311 $(error "Error: SPD is incompatible with AArch32.")
Soby Mathewa1941252016-05-05 14:33:33 +0100312endif
Sandrine Bailleux03897bb2015-11-26 16:31:34 +0000313ifdef EL3_PAYLOAD_BASE
314 $(warning "SPD and EL3_PAYLOAD_BASE are incompatible build options.")
315 $(warning "The SPD and its BL32 companion will be present but ignored.")
316endif
Juan Castilloa3487d12015-08-18 14:23:04 +0100317 # We expect to locate an spd.mk under the specified SPD directory
Evan Lloydf2697142015-12-02 18:17:37 +0000318 SPD_MAKE := $(wildcard services/spd/${SPD}/${SPD}.mk)
Juan Castilloa3487d12015-08-18 14:23:04 +0100319
320 ifeq (${SPD_MAKE},)
321 $(error Error: No services/spd/${SPD}/${SPD}.mk located)
322 endif
323 $(info Including ${SPD_MAKE})
324 include ${SPD_MAKE}
325
Juan Castillo671b8db2015-11-12 10:59:26 +0000326 # If there's BL32 companion for the chosen SPD, we expect that the SPD's
327 # Makefile would set NEED_BL32 to "yes". In this case, the build system
328 # supports two mutually exclusive options:
329 # * BL32 is built from source: then BL32_SOURCES must contain the list
330 # of source files to build BL32
331 # * BL32 is a prebuilt binary: then BL32 must point to the image file
332 # that will be included in the FIP
333 # If both BL32_SOURCES and BL32 are defined, the binary takes precedence
334 # over the sources.
Juan Castilloa3487d12015-08-18 14:23:04 +0100335endif
336
Douglas Raillard306593d2017-02-24 18:14:15 +0000337################################################################################
Juan Castilloa3487d12015-08-18 14:23:04 +0100338# Include the platform specific Makefile after the SPD Makefile (the platform
339# makefile may use all previous definitions in this file)
340################################################################################
Jeenu Viswambharane5c39fd2014-05-16 11:38:10 +0100341
Dan Handley81be1002015-03-27 17:44:35 +0000342include ${PLAT_MAKEFILE_FULL}
Jon Medhurst66573cb2014-02-13 15:19:28 +0000343
Masahiro Yamadae2395b42017-11-04 03:12:28 +0900344$(eval $(call MAKE_PREREQ_DIR,${BUILD_PLAT}))
345
Etienne Carriere1374fcb2017-11-08 13:48:40 +0100346ifeq (${ARM_ARCH_MAJOR},7)
347include make_helpers/armv7-a-cpus.mk
348endif
349
Soby Mathew078f1a42018-08-28 11:13:55 +0100350ifeq ($(ENABLE_PIE),1)
351 TF_CFLAGS += -fpie
Louis Mayencourt9f1150c2019-03-05 17:08:46 +0000352 TF_LDFLAGS += -pie --no-dynamic-linker
Soby Mathew078f1a42018-08-28 11:13:55 +0100353else
354 PIE_FOUND := $(findstring --enable-default-pie,${GCC_V_OUTPUT})
355 ifneq ($(PIE_FOUND),)
356 TF_CFLAGS += -fno-PIE
357 endif
358endif
359
Sandrine Bailleuxd4817592016-01-13 14:57:38 +0000360# Include the CPU specific operations makefile, which provides default
361# values for all CPU errata workarounds and CPU specific optimisations.
362# This can be overridden by the platform.
Soby Mathew937488b2014-09-22 14:13:34 +0100363include lib/cpus/cpu-ops.mk
Soby Mathew802f8652014-08-14 16:19:29 +0100364
dp-armcdd03cb2017-02-15 11:07:55 +0000365ifeq (${ARCH},aarch32)
366NEED_BL32 := yes
367
368################################################################################
369# Build `AARCH32_SP` as BL32 image for AArch32
370################################################################################
371ifneq (${AARCH32_SP},none)
372# We expect to locate an sp.mk under the specified AARCH32_SP directory
373AARCH32_SP_MAKE := $(wildcard bl32/${AARCH32_SP}/${AARCH32_SP}.mk)
374
375ifeq (${AARCH32_SP_MAKE},)
376 $(error Error: No bl32/${AARCH32_SP}/${AARCH32_SP}.mk located)
377endif
378
379$(info Including ${AARCH32_SP_MAKE})
380include ${AARCH32_SP_MAKE}
381endif
382
Varun Wadekar3f9002c2019-01-31 09:22:30 -0800383endif
384
385################################################################################
386# Include libc if not overridden
387################################################################################
388ifeq (${OVERRIDE_LIBC},0)
389include lib/libc/libc.mk
dp-armcdd03cb2017-02-15 11:07:55 +0000390endif
Juan Castilloa3487d12015-08-18 14:23:04 +0100391
392################################################################################
Antonio Nino Diazfaf573a2016-02-15 14:53:10 +0000393# Check incompatible options
394################################################################################
395
396ifdef EL3_PAYLOAD_BASE
Antonio Nino Diaz2b8277b2016-04-06 17:31:57 +0100397 ifdef PRELOADED_BL33_BASE
398 $(warning "PRELOADED_BL33_BASE and EL3_PAYLOAD_BASE are \
399 incompatible build options. EL3_PAYLOAD_BASE has priority.")
Antonio Nino Diazfaf573a2016-02-15 14:53:10 +0000400 endif
Qixiang Xube9bd9d2017-08-24 11:03:23 +0800401 ifneq (${GENERATE_COT},0)
402 $(error "GENERATE_COT and EL3_PAYLOAD_BASE are incompatible build options.")
403 endif
404 ifneq (${TRUSTED_BOARD_BOOT},0)
405 $(error "TRUSTED_BOARD_BOOT and EL3_PAYLOAD_BASE are incompatible build options.")
406 endif
Antonio Nino Diazfaf573a2016-02-15 14:53:10 +0000407endif
408
409ifeq (${NEED_BL33},yes)
410 ifdef EL3_PAYLOAD_BASE
411 $(warning "BL33 image is not needed when option \
412 BL33_PAYLOAD_BASE is used and won't be added to the FIP file.")
413 endif
Antonio Nino Diaz2b8277b2016-04-06 17:31:57 +0100414 ifdef PRELOADED_BL33_BASE
415 $(warning "BL33 image is not needed when option \
416 PRELOADED_BL33_BASE is used and won't be added to the FIP \
417 file.")
Antonio Nino Diazfaf573a2016-02-15 14:53:10 +0000418 endif
419endif
420
Jeenu Viswambharan7ed2cbc2017-01-06 16:14:42 +0000421# When building for systems with hardware-assisted coherency, there's no need to
422# use USE_COHERENT_MEM. Require that USE_COHERENT_MEM must be set to 0 too.
423ifeq ($(HW_ASSISTED_COHERENCY)-$(USE_COHERENT_MEM),1-1)
424$(error USE_COHERENT_MEM cannot be enabled with HW_ASSISTED_COHERENCY)
425endif
Yatharth Kocharf528faf2016-06-28 16:58:26 +0100426
Jiafei Pan43a7bf42018-03-21 07:20:09 +0000427#For now, BL2_IN_XIP_MEM is only supported when BL2_AT_EL3 is 1.
428ifeq ($(BL2_AT_EL3)-$(BL2_IN_XIP_MEM),0-1)
429$(error "BL2_IN_XIP_MEM is only supported when BL2_AT_EL3 is enabled")
430endif
431
Jeenu Viswambharan9a7ce2f2018-04-04 16:07:11 +0100432# For RAS_EXTENSION, require that EAs are handled in EL3 first
433ifeq ($(RAS_EXTENSION),1)
434 ifneq ($(HANDLE_EA_EL3_FIRST),1)
435 $(error For RAS_EXTENSION, HANDLE_EA_EL3_FIRST must also be 1)
436 endif
437endif
438
Jeenu Viswambharanf00da742017-12-08 12:13:51 +0000439# When FAULT_INJECTION_SUPPORT is used, require that RAS_EXTENSION is enabled
440ifeq ($(FAULT_INJECTION_SUPPORT),1)
441 ifneq ($(RAS_EXTENSION),1)
442 $(error For FAULT_INJECTION_SUPPORT, RAS_EXTENSION must also be 1)
443 endif
444endif
445
Roberto Vargas025946a2018-09-24 17:20:48 +0100446# DYN_DISABLE_AUTH can be set only when TRUSTED_BOARD_BOOT=1
Soby Mathew9fe88042018-03-26 12:43:37 +0100447ifeq ($(DYN_DISABLE_AUTH), 1)
448 ifeq (${TRUSTED_BOARD_BOOT}, 0)
449 $(error "TRUSTED_BOARD_BOOT must be enabled for DYN_DISABLE_AUTH to be set.")
450 endif
Soby Mathew9fe88042018-03-26 12:43:37 +0100451endif
452
Antonio Nino Diaz25cda672019-02-19 11:53:51 +0000453# If pointer authentication is used in the firmware, make sure that all the
454# registers associated to it are also saved and restored. Not doing it would
455# leak the value of the key used by EL3 to EL1 and S-EL1.
456ifeq ($(ENABLE_PAUTH),1)
John Tsichritzis1d93c352019-05-07 14:09:09 +0100457 ifneq ($(ARCH),aarch64)
458 $(error ENABLE_PAUTH=1 requires AArch64)
459 else ifeq ($(CTX_INCLUDE_PAUTH_REGS),0)
Antonio Nino Diaz25cda672019-02-19 11:53:51 +0000460 $(error ENABLE_PAUTH=1 requires CTX_INCLUDE_PAUTH_REGS=1)
Alexei Fedorov2831d582019-03-13 11:05:07 +0000461 else
462 $(info ENABLE_PAUTH and CTX_INCLUDE_PAUTH_REGS are experimental features)
463 endif
464else
465 ifeq ($(CTX_INCLUDE_PAUTH_REGS),1)
John Tsichritzis1d93c352019-05-07 14:09:09 +0100466 ifneq ($(ARCH),aarch64)
467 $(error CTX_INCLUDE_PAUTH_REGS=1 requires AArch64)
468 else
469 $(info CTX_INCLUDE_PAUTH_REGS is an experimental feature)
470 endif
Antonio Nino Diaz25cda672019-02-19 11:53:51 +0000471 endif
472endif
473
Antonio Nino Diazfaf573a2016-02-15 14:53:10 +0000474################################################################################
Juan Castilloa3487d12015-08-18 14:23:04 +0100475# Process platform overrideable behaviour
476################################################################################
477
Sandrine Bailleuxf4119ec2015-12-17 13:58:58 +0000478# Using the ARM Trusted Firmware BL2 implies that a BL33 image also needs to be
Juan Castilloa3487d12015-08-18 14:23:04 +0100479# supplied for the FIP and Certificate generation tools. This flag can be
480# overridden by the platform.
Jon Medhurst66573cb2014-02-13 15:19:28 +0000481ifdef BL2_SOURCES
Antonio Nino Diazfaf573a2016-02-15 14:53:10 +0000482 ifdef EL3_PAYLOAD_BASE
483 # If booting an EL3 payload there is no need for a BL33 image
484 # in the FIP file.
485 NEED_BL33 := no
486 else
Antonio Nino Diaz2b8277b2016-04-06 17:31:57 +0100487 ifdef PRELOADED_BL33_BASE
Antonio Nino Diazfaf573a2016-02-15 14:53:10 +0000488 # If booting a BL33 preloaded image there is no need of
489 # another one in the FIP file.
490 NEED_BL33 := no
491 else
492 NEED_BL33 ?= yes
493 endif
494 endif
Jon Medhurst66573cb2014-02-13 15:19:28 +0000495endif
Achin Gupta4f6ad662013-10-25 09:08:21 +0100496
Masahiro Yamadae76b4f82017-04-05 19:11:41 +0900497# If SCP_BL2 is given, we always want FIP to include it.
498ifdef SCP_BL2
499 NEED_SCP_BL2 := yes
500endif
501
Soby Mathewbf169232017-11-14 14:10:10 +0000502# For AArch32, BL31 is not currently supported.
503ifneq (${ARCH},aarch32)
504 ifdef BL31_SOURCES
505 # When booting an EL3 payload, there is no need to compile the BL31 image nor
506 # put it in the FIP.
507 ifndef EL3_PAYLOAD_BASE
508 NEED_BL31 := yes
509 endif
510 endif
511endif
512
Juan Castilloa3487d12015-08-18 14:23:04 +0100513# Process TBB related flags
514ifneq (${GENERATE_COT},0)
515 # Common cert_create options
516 ifneq (${CREATE_KEYS},0)
517 $(eval CRT_ARGS += -n)
Yatharth Kochard1a93432015-10-12 12:33:47 +0100518 $(eval FWU_CRT_ARGS += -n)
Juan Castilloa3487d12015-08-18 14:23:04 +0100519 ifneq (${SAVE_KEYS},0)
520 $(eval CRT_ARGS += -k)
Yatharth Kochard1a93432015-10-12 12:33:47 +0100521 $(eval FWU_CRT_ARGS += -k)
Juan Castilloa3487d12015-08-18 14:23:04 +0100522 endif
523 endif
524 # Include TBBR makefile (unless the platform indicates otherwise)
525 ifeq (${INCLUDE_TBBR_MK},1)
526 include make_helpers/tbbr/tbbr_tools.mk
527 endif
Ryan Harkin25cff832014-01-13 12:37:03 +0000528endif
Achin Gupta4f6ad662013-10-25 09:08:21 +0100529
Masahiro Yamada4d87eb42016-12-25 13:52:22 +0900530ifneq (${FIP_ALIGN},0)
531FIP_ARGS += --align ${FIP_ALIGN}
532endif
533
Juan Castilloa3487d12015-08-18 14:23:04 +0100534################################################################################
Michalis Pappas0f223c52018-03-20 13:01:27 +0800535# Include libraries' Makefile that are used in all BL
536################################################################################
537
538include lib/stack_protector/stack_protector.mk
539
540################################################################################
dp-arm4972ec52016-05-25 16:20:20 +0100541# Auxiliary tools (fiptool, cert_create, etc)
Juan Castilloa3487d12015-08-18 14:23:04 +0100542################################################################################
Achin Gupta375f5382014-02-18 18:12:48 +0000543
Juan Castilloa3487d12015-08-18 14:23:04 +0100544# Variables for use with Certificate Generation Tool
545CRTTOOLPATH ?= tools/cert_create
Evan Lloyd004c9a52015-12-03 11:35:40 +0000546CRTTOOL ?= ${CRTTOOLPATH}/cert_create${BIN_EXT}
Achin Gupta375f5382014-02-18 18:12:48 +0000547
Juan Castilloa3487d12015-08-18 14:23:04 +0100548# Variables for use with Firmware Image Package
dp-arm4972ec52016-05-25 16:20:20 +0100549FIPTOOLPATH ?= tools/fiptool
550FIPTOOL ?= ${FIPTOOLPATH}/fiptool${BIN_EXT}
James Morrisseyeaaeece2013-11-01 13:56:59 +0000551
Antonio Nino Diaza830a4d2018-11-27 14:58:04 +0000552# Variables for use with sptool
553SPTOOLPATH ?= tools/sptool
554SPTOOL ?= ${SPTOOLPATH}/sptool${BIN_EXT}
555
Roberto Vargase92111a2018-05-22 16:05:42 +0100556# Variables for use with ROMLIB
557ROMLIBPATH ?= lib/romlib
558
Soby Mathew574e01e2017-02-14 10:05:07 +0000559################################################################################
560# Include BL specific makefiles
561################################################################################
562ifdef BL1_SOURCES
563NEED_BL1 := yes
564include bl1/bl1.mk
565endif
566
567ifdef BL2_SOURCES
568NEED_BL2 := yes
569include bl2/bl2.mk
570endif
571
Soby Mathew574e01e2017-02-14 10:05:07 +0000572ifdef BL2U_SOURCES
573NEED_BL2U := yes
574include bl2u/bl2u.mk
575endif
576
Soby Mathewbf169232017-11-14 14:10:10 +0000577ifeq (${NEED_BL31},yes)
Soby Mathew574e01e2017-02-14 10:05:07 +0000578ifdef BL31_SOURCES
Soby Mathew574e01e2017-02-14 10:05:07 +0000579include bl31/bl31.mk
580endif
581endif
Soby Mathew574e01e2017-02-14 10:05:07 +0000582
Nishanth Menon4ac02ba2016-10-14 01:13:57 +0000583ifdef FDT_SOURCES
584NEED_FDT := yes
585endif
586
Soby Mathew574e01e2017-02-14 10:05:07 +0000587################################################################################
Juan Castilloa3487d12015-08-18 14:23:04 +0100588# Build options checks
589################################################################################
590
Sandrine Bailleuxb21b02f2015-10-30 15:05:17 +0000591$(eval $(call assert_boolean,COLD_BOOT_SINGLE_CPU))
Jeenu Viswambharan615ff392016-10-24 14:31:51 +0100592$(eval $(call assert_boolean,CREATE_KEYS))
593$(eval $(call assert_boolean,CTX_INCLUDE_AARCH32_REGS))
594$(eval $(call assert_boolean,CTX_INCLUDE_FPREGS))
Antonio Nino Diaz594811b2019-01-31 11:58:00 +0000595$(eval $(call assert_boolean,CTX_INCLUDE_PAUTH_REGS))
Jeenu Viswambharan615ff392016-10-24 14:31:51 +0100596$(eval $(call assert_boolean,DEBUG))
Soby Mathew9fe88042018-03-26 12:43:37 +0100597$(eval $(call assert_boolean,DYN_DISABLE_AUTH))
Jeenu Viswambharanef29b452018-02-06 07:50:18 +0000598$(eval $(call assert_boolean,EL3_EXCEPTION_HANDLING))
Dimitris Papastamosfcedb692017-10-16 11:40:10 +0100599$(eval $(call assert_boolean,ENABLE_AMU))
Antonio Nino Diaz808c2292017-04-18 15:16:05 +0100600$(eval $(call assert_boolean,ENABLE_ASSERTIONS))
Jeenu Viswambharan2da918c2018-07-31 16:13:33 +0100601$(eval $(call assert_boolean,ENABLE_MPAM_FOR_LOWER_ELS))
Antonio Nino Diaz25cda672019-02-19 11:53:51 +0000602$(eval $(call assert_boolean,ENABLE_PAUTH))
Soby Mathew078f1a42018-08-28 11:13:55 +0100603$(eval $(call assert_boolean,ENABLE_PIE))
Yatharth Kochar9518d022016-03-11 14:20:19 +0000604$(eval $(call assert_boolean,ENABLE_PMF))
Yatharth Kochar241ec6c2016-05-09 18:26:35 +0100605$(eval $(call assert_boolean,ENABLE_PSCI_STAT))
dp-arm3cac7862016-09-19 11:18:44 +0100606$(eval $(call assert_boolean,ENABLE_RUNTIME_INSTRUMENTATION))
Jeenu Viswambharand73dcf32017-07-19 13:52:12 +0100607$(eval $(call assert_boolean,ENABLE_SPE_FOR_LOWER_ELS))
Antonio Nino Diazfa8f0f42018-03-26 15:57:17 +0100608$(eval $(call assert_boolean,ENABLE_SPM))
David Cunadoce88eee2017-10-20 11:30:57 +0100609$(eval $(call assert_boolean,ENABLE_SVE_FOR_NS))
Jeenu Viswambharan615ff392016-10-24 14:31:51 +0100610$(eval $(call assert_boolean,ERROR_DEPRECATED))
Jeenu Viswambharanf00da742017-12-08 12:13:51 +0000611$(eval $(call assert_boolean,FAULT_INJECTION_SUPPORT))
Jeenu Viswambharan615ff392016-10-24 14:31:51 +0100612$(eval $(call assert_boolean,GENERATE_COT))
Jeenu Viswambharanc06f05c2017-09-22 08:32:09 +0100613$(eval $(call assert_boolean,GICV2_G0_FOR_EL3))
Jeenu Viswambharan96c7df02017-11-30 12:54:15 +0000614$(eval $(call assert_boolean,HANDLE_EA_EL3_FIRST))
Jeenu Viswambharana10d64e2017-01-04 13:51:42 +0000615$(eval $(call assert_boolean,HW_ASSISTED_COHERENCY))
Julius Werner94f89072017-07-31 18:15:11 -0700616$(eval $(call assert_boolean,MULTI_CONSOLE_API))
Jeenu Viswambharan615ff392016-10-24 14:31:51 +0100617$(eval $(call assert_boolean,NS_TIMER_SWITCH))
Varun Wadekar3f9002c2019-01-31 09:22:30 -0800618$(eval $(call assert_boolean,OVERRIDE_LIBC))
Jeenu Viswambharan615ff392016-10-24 14:31:51 +0100619$(eval $(call assert_boolean,PL011_GENERIC_UART))
620$(eval $(call assert_boolean,PROGRAMMABLE_RESET_ADDRESS))
621$(eval $(call assert_boolean,PSCI_EXTENDED_STATE_ID))
Jeenu Viswambharan9a7ce2f2018-04-04 16:07:11 +0100622$(eval $(call assert_boolean,RAS_EXTENSION))
Jeenu Viswambharan615ff392016-10-24 14:31:51 +0100623$(eval $(call assert_boolean,RESET_TO_BL31))
624$(eval $(call assert_boolean,SAVE_KEYS))
625$(eval $(call assert_boolean,SEPARATE_CODE_AND_RODATA))
626$(eval $(call assert_boolean,SPIN_ON_BL1_EXIT))
Antonio Nino Diazcbccdbf2019-01-21 11:53:29 +0000627$(eval $(call assert_boolean,SPM_MM))
Jeenu Viswambharan615ff392016-10-24 14:31:51 +0100628$(eval $(call assert_boolean,TRUSTED_BOARD_BOOT))
629$(eval $(call assert_boolean,USE_COHERENT_MEM))
Roberto Vargase92111a2018-05-22 16:05:42 +0100630$(eval $(call assert_boolean,USE_ROMLIB))
Masahiro Yamadaa27c1662017-05-22 12:11:24 +0900631$(eval $(call assert_boolean,USE_TBBR_DEFS))
Soby Mathew043fe9c2017-04-10 22:35:42 +0100632$(eval $(call assert_boolean,WARMBOOT_ENABLE_DCACHE_EARLY))
Roberto Vargase0e99462017-10-30 14:43:43 +0000633$(eval $(call assert_boolean,BL2_AT_EL3))
Jiafei Pan43a7bf42018-03-21 07:20:09 +0000634$(eval $(call assert_boolean,BL2_IN_XIP_MEM))
Dan Handley81be1002015-03-27 17:44:35 +0000635
Jeenu Viswambharanfca76802017-01-16 16:52:35 +0000636$(eval $(call assert_numeric,ARM_ARCH_MAJOR))
637$(eval $(call assert_numeric,ARM_ARCH_MINOR))
638
Juan Castilloa3487d12015-08-18 14:23:04 +0100639################################################################################
640# Add definitions to the cpp preprocessor based on the current build options.
641# This is done after including the platform specific makefile to allow the
642# platform to overwrite the default options
643################################################################################
Jeenu Viswambharand1b60152014-05-12 15:28:47 +0100644
Jeenu Viswambharanfca76802017-01-16 16:52:35 +0000645$(eval $(call add_define,ARM_ARCH_MAJOR))
646$(eval $(call add_define,ARM_ARCH_MINOR))
Sandrine Bailleuxb21b02f2015-10-30 15:05:17 +0000647$(eval $(call add_define,COLD_BOOT_SINGLE_CPU))
Jeenu Viswambharan615ff392016-10-24 14:31:51 +0100648$(eval $(call add_define,CTX_INCLUDE_AARCH32_REGS))
649$(eval $(call add_define,CTX_INCLUDE_FPREGS))
Antonio Nino Diaz594811b2019-01-31 11:58:00 +0000650$(eval $(call add_define,CTX_INCLUDE_PAUTH_REGS))
Jeenu Viswambharanef29b452018-02-06 07:50:18 +0000651$(eval $(call add_define,EL3_EXCEPTION_HANDLING))
Dimitris Papastamosfcedb692017-10-16 11:40:10 +0100652$(eval $(call add_define,ENABLE_AMU))
Antonio Nino Diaz808c2292017-04-18 15:16:05 +0100653$(eval $(call add_define,ENABLE_ASSERTIONS))
Jeenu Viswambharan2da918c2018-07-31 16:13:33 +0100654$(eval $(call add_define,ENABLE_MPAM_FOR_LOWER_ELS))
Antonio Nino Diaz25cda672019-02-19 11:53:51 +0000655$(eval $(call add_define,ENABLE_PAUTH))
Soby Mathew078f1a42018-08-28 11:13:55 +0100656$(eval $(call add_define,ENABLE_PIE))
Yatharth Kochar9518d022016-03-11 14:20:19 +0000657$(eval $(call add_define,ENABLE_PMF))
Yatharth Kochar241ec6c2016-05-09 18:26:35 +0100658$(eval $(call add_define,ENABLE_PSCI_STAT))
dp-arm3cac7862016-09-19 11:18:44 +0100659$(eval $(call add_define,ENABLE_RUNTIME_INSTRUMENTATION))
Jeenu Viswambharand73dcf32017-07-19 13:52:12 +0100660$(eval $(call add_define,ENABLE_SPE_FOR_LOWER_ELS))
Antonio Nino Diazfa8f0f42018-03-26 15:57:17 +0100661$(eval $(call add_define,ENABLE_SPM))
David Cunadoce88eee2017-10-20 11:30:57 +0100662$(eval $(call add_define,ENABLE_SVE_FOR_NS))
Jeenu Viswambharan615ff392016-10-24 14:31:51 +0100663$(eval $(call add_define,ERROR_DEPRECATED))
Jeenu Viswambharanf00da742017-12-08 12:13:51 +0000664$(eval $(call add_define,FAULT_INJECTION_SUPPORT))
Jeenu Viswambharanc06f05c2017-09-22 08:32:09 +0100665$(eval $(call add_define,GICV2_G0_FOR_EL3))
Jeenu Viswambharan96c7df02017-11-30 12:54:15 +0000666$(eval $(call add_define,HANDLE_EA_EL3_FIRST))
Jeenu Viswambharana10d64e2017-01-04 13:51:42 +0000667$(eval $(call add_define,HW_ASSISTED_COHERENCY))
Jeenu Viswambharan615ff392016-10-24 14:31:51 +0100668$(eval $(call add_define,LOG_LEVEL))
Julius Werner94f89072017-07-31 18:15:11 -0700669$(eval $(call add_define,MULTI_CONSOLE_API))
Jeenu Viswambharan615ff392016-10-24 14:31:51 +0100670$(eval $(call add_define,NS_TIMER_SWITCH))
671$(eval $(call add_define,PL011_GENERIC_UART))
672$(eval $(call add_define,PLAT_${PLAT}))
673$(eval $(call add_define,PROGRAMMABLE_RESET_ADDRESS))
674$(eval $(call add_define,PSCI_EXTENDED_STATE_ID))
Jeenu Viswambharan9a7ce2f2018-04-04 16:07:11 +0100675$(eval $(call add_define,RAS_EXTENSION))
Jeenu Viswambharan615ff392016-10-24 14:31:51 +0100676$(eval $(call add_define,RESET_TO_BL31))
677$(eval $(call add_define,SEPARATE_CODE_AND_RODATA))
Daniel Boulby468f0d72018-09-18 11:45:51 +0100678$(eval $(call add_define,RECLAIM_INIT_CODE))
Jeenu Viswambharan615ff392016-10-24 14:31:51 +0100679$(eval $(call add_define,SPD_${SPD}))
680$(eval $(call add_define,SPIN_ON_BL1_EXIT))
Antonio Nino Diazcbccdbf2019-01-21 11:53:29 +0000681$(eval $(call add_define,SPM_MM))
Jeenu Viswambharan615ff392016-10-24 14:31:51 +0100682$(eval $(call add_define,TRUSTED_BOARD_BOOT))
683$(eval $(call add_define,USE_COHERENT_MEM))
Roberto Vargase92111a2018-05-22 16:05:42 +0100684$(eval $(call add_define,USE_ROMLIB))
Masahiro Yamadaa27c1662017-05-22 12:11:24 +0900685$(eval $(call add_define,USE_TBBR_DEFS))
Soby Mathew043fe9c2017-04-10 22:35:42 +0100686$(eval $(call add_define,WARMBOOT_ENABLE_DCACHE_EARLY))
Roberto Vargase0e99462017-10-30 14:43:43 +0000687$(eval $(call add_define,BL2_AT_EL3))
Jiafei Pan43a7bf42018-03-21 07:20:09 +0000688$(eval $(call add_define,BL2_IN_XIP_MEM))
Jeenu Viswambharan615ff392016-10-24 14:31:51 +0100689
Sandrine Bailleux03897bb2015-11-26 16:31:34 +0000690# Define the EL3_PAYLOAD_BASE flag only if it is provided.
691ifdef EL3_PAYLOAD_BASE
Antonio Nino Diazfaf573a2016-02-15 14:53:10 +0000692 $(eval $(call add_define,EL3_PAYLOAD_BASE))
693else
Antonio Nino Diaz2b8277b2016-04-06 17:31:57 +0100694 # Define the PRELOADED_BL33_BASE flag only if it is provided and
695 # EL3_PAYLOAD_BASE is not defined, as it has priority.
696 ifdef PRELOADED_BL33_BASE
697 $(eval $(call add_define,PRELOADED_BL33_BASE))
Antonio Nino Diazfaf573a2016-02-15 14:53:10 +0000698 endif
Sandrine Bailleux03897bb2015-11-26 16:31:34 +0000699endif
Soby Mathewc6820d12016-05-09 17:49:55 +0100700# Define the AARCH32/AARCH64 flag based on the ARCH flag
701ifeq (${ARCH},aarch32)
702 $(eval $(call add_define,AARCH32))
703else
704 $(eval $(call add_define,AARCH64))
705endif
Soby Mathew85dbf5a2015-04-07 12:16:56 +0100706
Soby Mathew9fe88042018-03-26 12:43:37 +0100707# Define the DYN_DISABLE_AUTH flag only if set.
708ifeq (${DYN_DISABLE_AUTH},1)
709$(eval $(call add_define,DYN_DISABLE_AUTH))
710endif
711
Varun Wadekar4d034c52019-01-11 14:47:48 -0800712ifneq ($(findstring armlink,$(notdir $(LD))),)
713$(eval $(call add_define,USE_ARM_LINK))
714endif
715
Juan Castilloa3487d12015-08-18 14:23:04 +0100716################################################################################
Juan Castilloa3487d12015-08-18 14:23:04 +0100717# Build targets
718################################################################################
Achin Gupta4f6ad662013-10-25 09:08:21 +0100719
Antonio Nino Diaza830a4d2018-11-27 14:58:04 +0000720.PHONY: all msg_start clean realclean distclean cscope locate-checkpatch checkcodebase checkpatch fiptool sptool fip fwu_fip certtool dtbs
Juan Castilloa3487d12015-08-18 14:23:04 +0100721.SUFFIXES:
Achin Gupta4f6ad662013-10-25 09:08:21 +0100722
Juan Castilloa3487d12015-08-18 14:23:04 +0100723all: msg_start
Harry Liebelf58ad362014-01-10 18:00:33 +0000724
Juan Castilloa3487d12015-08-18 14:23:04 +0100725msg_start:
726 @echo "Building ${PLAT}"
Juan Castillo11abdcd2014-10-21 11:30:42 +0100727
Dan Handley6fa89a22018-02-27 16:03:58 +0000728# Check if deprecated declarations and cpp warnings should be treated as error or not.
Soby Mathew18a62042015-10-26 14:29:21 +0000729ifeq (${ERROR_DEPRECATED},0)
Varun Wadekar4d034c52019-01-11 14:47:48 -0800730ifneq ($(findstring clang,$(notdir $(CC))),)
731 CPPFLAGS += -Wno-error=deprecated-declarations
732else
Dan Handley6fa89a22018-02-27 16:03:58 +0000733 CPPFLAGS += -Wno-error=deprecated-declarations -Wno-error=cpp
Soby Mathew18a62042015-10-26 14:29:21 +0000734endif
Varun Wadekar4d034c52019-01-11 14:47:48 -0800735endif
Soby Mathew18a62042015-10-26 14:29:21 +0000736
Roberto Vargase92111a2018-05-22 16:05:42 +0100737$(eval $(call MAKE_LIB_DIRS))
Roberto Vargas0f8f9852018-05-08 10:27:10 +0100738$(eval $(call MAKE_LIB,c))
Roberto Vargas21360f32018-05-08 10:27:10 +0100739
Juan Castilloa3487d12015-08-18 14:23:04 +0100740# Expand build macros for the different images
741ifeq (${NEED_BL1},yes)
742$(eval $(call MAKE_BL,1))
743endif
Juan Castillo11abdcd2014-10-21 11:30:42 +0100744
Juan Castilloa3487d12015-08-18 14:23:04 +0100745ifeq (${NEED_BL2},yes)
Roberto Vargas53c052b2018-01-02 11:23:41 +0000746ifeq (${BL2_AT_EL3}, 0)
747FIP_BL2_ARGS := tb-fw
748endif
749
Masahiro Yamada9c5ca522018-01-26 11:42:01 +0900750$(if ${BL2}, $(eval $(call TOOL_ADD_IMG,bl2,--${FIP_BL2_ARGS})),\
Roberto Vargas53c052b2018-01-02 11:23:41 +0000751 $(eval $(call MAKE_BL,2,${FIP_BL2_ARGS})))
Juan Castilloa3487d12015-08-18 14:23:04 +0100752endif
Juan Castillo11abdcd2014-10-21 11:30:42 +0100753
Masahiro Yamadae76b4f82017-04-05 19:11:41 +0900754ifeq (${NEED_SCP_BL2},yes)
Masahiro Yamada9c5ca522018-01-26 11:42:01 +0900755$(eval $(call TOOL_ADD_IMG,scp_bl2,--scp-fw))
Masahiro Yamadae76b4f82017-04-05 19:11:41 +0900756endif
757
Juan Castilloa3487d12015-08-18 14:23:04 +0100758ifeq (${NEED_BL31},yes)
759BL31_SOURCES += ${SPD_SOURCES}
Masahiro Yamada9c5ca522018-01-26 11:42:01 +0900760$(if ${BL31}, $(eval $(call TOOL_ADD_IMG,bl31,--soc-fw)),\
Juan Castillo8e04dec2016-01-05 11:55:36 +0000761 $(eval $(call MAKE_BL,31,soc-fw)))
Juan Castilloa3487d12015-08-18 14:23:04 +0100762endif
Juan Castillo379954c2014-11-04 17:36:40 +0000763
Juan Castillo671b8db2015-11-12 10:59:26 +0000764# If a BL32 image is needed but neither BL32 nor BL32_SOURCES is defined, the
Masahiro Yamada4d156802018-01-26 11:42:01 +0900765# build system will call TOOL_ADD_IMG to print a warning message and abort the
Juan Castillo671b8db2015-11-12 10:59:26 +0000766# process. Note that the dependency on BL32 applies to the FIP only.
Juan Castilloa3487d12015-08-18 14:23:04 +0100767ifeq (${NEED_BL32},yes)
Masahiro Yamada6ced1b22018-01-26 11:42:01 +0900768
769BUILD_BL32 := $(if $(BL32),,$(if $(BL32_SOURCES),1))
770
771$(if ${BUILD_BL32}, $(eval $(call MAKE_BL,32,tos-fw)),\
Masahiro Yamada9c5ca522018-01-26 11:42:01 +0900772 $(eval $(call TOOL_ADD_IMG,bl32,--tos-fw)))
Juan Castillo11abdcd2014-10-21 11:30:42 +0100773endif
774
Juan Castilloa3487d12015-08-18 14:23:04 +0100775# Add the BL33 image if required by the platform
776ifeq (${NEED_BL33},yes)
Masahiro Yamada9c5ca522018-01-26 11:42:01 +0900777$(eval $(call TOOL_ADD_IMG,bl33,--nt-fw))
Juan Castillo9c25a402015-01-13 12:21:04 +0000778endif
779
Yatharth Kocharb1c2fe02015-10-14 15:27:24 +0100780ifeq (${NEED_BL2U},yes)
Masahiro Yamada9c5ca522018-01-26 11:42:01 +0900781$(if ${BL2U}, $(eval $(call TOOL_ADD_IMG,bl2u,--ap-fwu-cfg,FWU_)),\
Masahiro Yamadacd7711d2018-01-26 11:42:01 +0900782 $(eval $(call MAKE_BL,2u,ap-fwu-cfg,FWU_)))
Yatharth Kocharb1c2fe02015-10-14 15:27:24 +0100783endif
784
Nishanth Menon4ac02ba2016-10-14 01:13:57 +0000785# Expand build macros for the different images
786ifeq (${NEED_FDT},yes)
Soby Mathewab4181d2017-12-14 17:44:56 +0000787 $(eval $(call MAKE_DTBS,$(BUILD_PLAT)/fdts,$(FDT_SOURCES)))
Nishanth Menon4ac02ba2016-10-14 01:13:57 +0000788endif
789
Ian Spray36eaaf32014-01-30 17:25:28 +0000790locate-checkpatch:
791ifndef CHECKPATCH
Etienne Carrieref5657572017-08-23 15:44:01 +0200792 $(error "Please set CHECKPATCH to point to the Linux checkpatch.pl file, eg: CHECKPATCH=../linux/scripts/checkpatch.pl")
Ian Spray36eaaf32014-01-30 17:25:28 +0000793else
794ifeq (,$(wildcard ${CHECKPATCH}))
Etienne Carrieref5657572017-08-23 15:44:01 +0200795 $(error "The file CHECKPATCH points to cannot be found, use eg: CHECKPATCH=../linux/scripts/checkpatch.pl")
Ian Spray36eaaf32014-01-30 17:25:28 +0000796endif
797endif
798
Achin Gupta4f6ad662013-10-25 09:08:21 +0100799clean:
Juan Castilloa3487d12015-08-18 14:23:04 +0100800 @echo " CLEAN"
Evan Lloyd26c6cb42015-12-02 18:33:55 +0000801 $(call SHELL_REMOVE_DIR,${BUILD_PLAT})
Juan Castilloa3487d12015-08-18 14:23:04 +0100802 ${Q}${MAKE} --no-print-directory -C ${FIPTOOLPATH} clean
803 ${Q}${MAKE} PLAT=${PLAT} --no-print-directory -C ${CRTTOOLPATH} clean
Roberto Vargase92111a2018-05-22 16:05:42 +0100804 ${Q}${MAKE} --no-print-directory -C ${ROMLIBPATH} clean
Achin Gupta4f6ad662013-10-25 09:08:21 +0100805
James Morrisseyeaaeece2013-11-01 13:56:59 +0000806realclean distclean:
Juan Castilloa3487d12015-08-18 14:23:04 +0100807 @echo " REALCLEAN"
Evan Lloyd26c6cb42015-12-02 18:33:55 +0000808 $(call SHELL_REMOVE_DIR,${BUILD_BASE})
809 $(call SHELL_DELETE_ALL, ${CURDIR}/cscope.*)
Juan Castilloa3487d12015-08-18 14:23:04 +0100810 ${Q}${MAKE} --no-print-directory -C ${FIPTOOLPATH} clean
Antonio Nino Diaza830a4d2018-11-27 14:58:04 +0000811 ${Q}${MAKE} --no-print-directory -C ${SPTOOLPATH} clean
Juan Castilloa3487d12015-08-18 14:23:04 +0100812 ${Q}${MAKE} PLAT=${PLAT} --no-print-directory -C ${CRTTOOLPATH} clean
Roberto Vargase92111a2018-05-22 16:05:42 +0100813 ${Q}${MAKE} --no-print-directory -C ${ROMLIBPATH} clean
Achin Gupta4f6ad662013-10-25 09:08:21 +0100814
Ian Spray36eaaf32014-01-30 17:25:28 +0000815checkcodebase: locate-checkpatch
Juan Castilloa3487d12015-08-18 14:23:04 +0100816 @echo " CHECKING STYLE"
Dan Handley3a355712016-06-02 18:21:02 +0100817 @if test -d .git ; then \
Paul Beesleyadfab5b2019-03-07 16:42:31 +0000818 git ls-files | grep -E -v 'libfdt|libc|docs|\.rst' | \
Dan Handley3a355712016-06-02 18:21:02 +0100819 while read GIT_FILE ; \
820 do ${CHECKPATCH} ${CHECKCODE_ARGS} -f $$GIT_FILE ; \
821 done ; \
822 else \
823 find . -type f -not -iwholename "*.git*" \
824 -not -iwholename "*build*" \
825 -not -iwholename "*libfdt*" \
Roberto Vargas0f8f9852018-05-08 10:27:10 +0100826 -not -iwholename "*libc*" \
Dan Handley3a355712016-06-02 18:21:02 +0100827 -not -iwholename "*docs*" \
Paul Beesleyadfab5b2019-03-07 16:42:31 +0000828 -not -iwholename "*.rst" \
Dan Handley3a355712016-06-02 18:21:02 +0100829 -exec ${CHECKPATCH} ${CHECKCODE_ARGS} -f {} \; ; \
830 fi
Ian Spray36eaaf32014-01-30 17:25:28 +0000831
832checkpatch: locate-checkpatch
Juan Castilloa3487d12015-08-18 14:23:04 +0100833 @echo " CHECKING STYLE"
Yann Gautier0c26a2a2019-03-08 15:44:00 +0100834 @if test -n "${CHECKPATCH_OPTS}"; then \
835 echo " with ${CHECKPATCH_OPTS} option(s)"; \
836 fi
Antonio Nino Diaz2cd4b582018-01-29 12:00:31 +0000837 ${Q}COMMON_COMMIT=$$(git merge-base HEAD ${BASE_COMMIT}); \
838 for commit in `git rev-list $$COMMON_COMMIT..HEAD`; do \
839 printf "\n[*] Checking style of '$$commit'\n\n"; \
840 git log --format=email "$$commit~..$$commit" \
Yann Gautier0c26a2a2019-03-08 15:44:00 +0100841 -- ${CHECK_PATHS} | \
842 ${CHECKPATCH} ${CHECKPATCH_OPTS} - || true; \
Antonio Nino Diaz2cd4b582018-01-29 12:00:31 +0000843 git diff --format=email "$$commit~..$$commit" \
Yann Gautier0c26a2a2019-03-08 15:44:00 +0100844 -- ${CHECK_PATHS} | \
845 ${CHECKPATCH} ${CHECKPATCH_OPTS} - || true; \
Antonio Nino Diaz2cd4b582018-01-29 12:00:31 +0000846 done
Juan Castilloa3487d12015-08-18 14:23:04 +0100847
848certtool: ${CRTTOOL}
Ian Spray36eaaf32014-01-30 17:25:28 +0000849
Juan Castillo11abdcd2014-10-21 11:30:42 +0100850.PHONY: ${CRTTOOL}
851${CRTTOOL}:
Masahiro Yamadaa27c1662017-05-22 12:11:24 +0900852 ${Q}${MAKE} PLAT=${PLAT} USE_TBBR_DEFS=${USE_TBBR_DEFS} --no-print-directory -C ${CRTTOOLPATH}
Evan Lloyd26c6cb42015-12-02 18:33:55 +0000853 @${ECHO_BLANK_LINE}
Juan Castilloa3487d12015-08-18 14:23:04 +0100854 @echo "Built $@ successfully"
Evan Lloyd26c6cb42015-12-02 18:33:55 +0000855 @${ECHO_BLANK_LINE}
Jon Medhurst407a95c2014-02-12 15:54:48 +0000856
Juan Castillo11abdcd2014-10-21 11:30:42 +0100857ifneq (${GENERATE_COT},0)
Juan Castilloa3487d12015-08-18 14:23:04 +0100858certificates: ${CRT_DEPS} ${CRTTOOL}
859 ${Q}${CRTTOOL} ${CRT_ARGS}
Evan Lloyd26c6cb42015-12-02 18:33:55 +0000860 @${ECHO_BLANK_LINE}
Juan Castilloa3487d12015-08-18 14:23:04 +0100861 @echo "Built $@ successfully"
862 @echo "Certificates can be found in ${BUILD_PLAT}"
Evan Lloyd26c6cb42015-12-02 18:33:55 +0000863 @${ECHO_BLANK_LINE}
Juan Castillo11abdcd2014-10-21 11:30:42 +0100864endif
865
Juan Castilloa3487d12015-08-18 14:23:04 +0100866${BUILD_PLAT}/${FIP_NAME}: ${FIP_DEPS} ${FIPTOOL}
dp-arm4972ec52016-05-25 16:20:20 +0100867 ${Q}${FIPTOOL} create ${FIP_ARGS} $@
868 ${Q}${FIPTOOL} info $@
Evan Lloyd26c6cb42015-12-02 18:33:55 +0000869 @${ECHO_BLANK_LINE}
Juan Castilloa3487d12015-08-18 14:23:04 +0100870 @echo "Built $@ successfully"
Evan Lloyd26c6cb42015-12-02 18:33:55 +0000871 @${ECHO_BLANK_LINE}
Soby Mathewdbee7fc2014-09-08 17:51:01 +0100872
Yatharth Kochard1a93432015-10-12 12:33:47 +0100873ifneq (${GENERATE_COT},0)
874fwu_certificates: ${FWU_CRT_DEPS} ${CRTTOOL}
875 ${Q}${CRTTOOL} ${FWU_CRT_ARGS}
Evan Lloyd1c5f3602017-04-11 16:52:00 +0100876 @${ECHO_BLANK_LINE}
Yatharth Kochard1a93432015-10-12 12:33:47 +0100877 @echo "Built $@ successfully"
878 @echo "FWU certificates can be found in ${BUILD_PLAT}"
Evan Lloyd1c5f3602017-04-11 16:52:00 +0100879 @${ECHO_BLANK_LINE}
Yatharth Kochard1a93432015-10-12 12:33:47 +0100880endif
881
882${BUILD_PLAT}/${FWU_FIP_NAME}: ${FWU_FIP_DEPS} ${FIPTOOL}
dp-arm4972ec52016-05-25 16:20:20 +0100883 ${Q}${FIPTOOL} create ${FWU_FIP_ARGS} $@
884 ${Q}${FIPTOOL} info $@
Evan Lloyd1c5f3602017-04-11 16:52:00 +0100885 @${ECHO_BLANK_LINE}
Yatharth Kochard1a93432015-10-12 12:33:47 +0100886 @echo "Built $@ successfully"
Evan Lloyd1c5f3602017-04-11 16:52:00 +0100887 @${ECHO_BLANK_LINE}
Yatharth Kochard1a93432015-10-12 12:33:47 +0100888
Juan Castilloa3487d12015-08-18 14:23:04 +0100889fiptool: ${FIPTOOL}
890fip: ${BUILD_PLAT}/${FIP_NAME}
Yatharth Kochard1a93432015-10-12 12:33:47 +0100891fwu_fip: ${BUILD_PLAT}/${FWU_FIP_NAME}
Harry Liebelf58ad362014-01-10 18:00:33 +0000892
Juan Castilloa3487d12015-08-18 14:23:04 +0100893.PHONY: ${FIPTOOL}
894${FIPTOOL}:
dp-arm4972ec52016-05-25 16:20:20 +0100895 ${Q}${MAKE} CPPFLAGS="-DVERSION='\"${VERSION_STRING}\"'" --no-print-directory -C ${FIPTOOLPATH}
Harry Liebelf58ad362014-01-10 18:00:33 +0000896
Antonio Nino Diaza830a4d2018-11-27 14:58:04 +0000897sptool: ${SPTOOL}
898.PHONY: ${SPTOOL}
899${SPTOOL}:
900 ${Q}${MAKE} CPPFLAGS="-DVERSION='\"${VERSION_STRING}\"'" --no-print-directory -C ${SPTOOLPATH}
901
Roberto Vargase92111a2018-05-22 16:05:42 +0100902.PHONY: libraries
903romlib.bin: libraries
Sathees Balyad6839ef2018-10-31 14:05:08 +0000904 ${Q}${MAKE} PLAT_DIR=${PLAT_DIR} BUILD_PLAT=${BUILD_PLAT} INCLUDES='${INCLUDES}' DEFINES='${DEFINES}' --no-print-directory -C ${ROMLIBPATH} all
Roberto Vargase92111a2018-05-22 16:05:42 +0100905
Joakim Bech35fab8c2014-01-23 14:51:49 +0100906cscope:
907 @echo " CSCOPE"
908 ${Q}find ${CURDIR} -name "*.[chsS]" > cscope.files
909 ${Q}cscope -b -q -k
910
Ryan Harkin72ee3312014-01-15 16:55:07 +0000911help:
Evan Lloydf2697142015-12-02 18:17:37 +0000912 @echo "usage: ${MAKE} PLAT=<${PLATFORM_LIST}> [OPTIONS] [TARGET]"
Ryan Harkin72ee3312014-01-15 16:55:07 +0000913 @echo ""
914 @echo "PLAT is used to specify which platform you wish to build."
Sandrine Bailleuxa08588a2014-03-21 13:16:35 +0000915 @echo "If no platform is specified, PLAT defaults to: ${DEFAULT_PLAT}"
Ryan Harkin72ee3312014-01-15 16:55:07 +0000916 @echo ""
Sandrine Bailleuxcf8afbd2015-02-18 16:18:00 +0000917 @echo "Please refer to the User Guide for a list of all supported options."
918 @echo "Note that the build system doesn't track dependencies for build "
919 @echo "options. Therefore, if any of the build options are changed "
920 @echo "from a previous build, a clean build must be performed."
921 @echo ""
Ryan Harkin72ee3312014-01-15 16:55:07 +0000922 @echo "Supported Targets:"
Sandrine Bailleuxcf8afbd2015-02-18 16:18:00 +0000923 @echo " all Build all individual bootloader binaries"
Ian Spray36eaaf32014-01-30 17:25:28 +0000924 @echo " bl1 Build the BL1 binary"
Jeenu Viswambharan8aa559c2014-02-21 11:42:08 +0000925 @echo " bl2 Build the BL2 binary"
Yatharth Kocharb1c2fe02015-10-14 15:27:24 +0100926 @echo " bl2u Build the BL2U binary"
Juan Castillo7d199412015-12-14 09:35:25 +0000927 @echo " bl31 Build the BL31 binary"
Soby Mathewa1941252016-05-05 14:33:33 +0100928 @echo " bl32 Build the BL32 binary. If ARCH=aarch32, then "
929 @echo " this builds secure payload specified by AARCH32_SP"
Juan Castilloa3487d12015-08-18 14:23:04 +0100930 @echo " certificates Build the certificates (requires 'GENERATE_COT=1')"
Sandrine Bailleuxcf8afbd2015-02-18 16:18:00 +0000931 @echo " fip Build the Firmware Image Package (FIP)"
Yatharth Kochard1a93432015-10-12 12:33:47 +0100932 @echo " fwu_fip Build the FWU Firmware Image Package (FIP)"
Ian Spray36eaaf32014-01-30 17:25:28 +0000933 @echo " checkcodebase Check the coding style of the entire source tree"
934 @echo " checkpatch Check the coding style on changes in the current"
935 @echo " branch against BASE_COMMIT (default origin/master)"
936 @echo " clean Clean the build for the selected platform"
Harry Liebelf58ad362014-01-10 18:00:33 +0000937 @echo " cscope Generate cscope index"
Ian Spray36eaaf32014-01-30 17:25:28 +0000938 @echo " distclean Remove all build artifacts for all platforms"
Juan Castillo11abdcd2014-10-21 11:30:42 +0100939 @echo " certtool Build the Certificate generation tool"
Andreas Färberec82cfb2016-10-10 05:18:49 +0200940 @echo " fiptool Build the Firmware Image Package (FIP) creation tool"
Antonio Nino Diaza830a4d2018-11-27 14:58:04 +0000941 @echo " sptool Build the Secure Partition Package creation tool"
Soby Mathewab4181d2017-12-14 17:44:56 +0000942 @echo " dtbs Build the Device Tree Blobs (if required for the platform)"
Ryan Harkin72ee3312014-01-15 16:55:07 +0000943 @echo ""
Sandrine Bailleuxcf8afbd2015-02-18 16:18:00 +0000944 @echo "Note: most build targets require PLAT to be set to a specific platform."
Ryan Harkin72ee3312014-01-15 16:55:07 +0000945 @echo ""
946 @echo "example: build all targets for the FVP platform:"
947 @echo " CROSS_COMPILE=aarch64-none-elf- make PLAT=fvp all"