1# SPDX-License-Identifier: GPL-2.0+ 2 3VERSION = 2019 4PATCHLEVEL = 01 5SUBLEVEL = 6EXTRAVERSION = -rc1 7NAME = 8 9# *DOCUMENTATION* 10# To see a list of typical targets execute "make help" 11# More info can be located in ./README 12# Comments in this file are targeted only to the developer, do not 13# expect to learn how to build the kernel reading this file. 14 15# o Do not use make's built-in rules and variables 16# (this increases performance and avoids hard-to-debug behaviour); 17# o Look for make include files relative to root of kernel src 18MAKEFLAGS += -rR --include-dir=$(CURDIR) 19 20# Avoid funny character set dependencies 21unexport LC_ALL 22LC_COLLATE=C 23LC_NUMERIC=C 24export LC_COLLATE LC_NUMERIC 25 26# Avoid interference with shell env settings 27unexport GREP_OPTIONS 28 29# We are using a recursive build, so we need to do a little thinking 30# to get the ordering right. 31# 32# Most importantly: sub-Makefiles should only ever modify files in 33# their own directory. If in some directory we have a dependency on 34# a file in another dir (which doesn't happen often, but it's often 35# unavoidable when linking the built-in.o targets which finally 36# turn into vmlinux), we will call a sub make in that other dir, and 37# after that we are sure that everything which is in that other dir 38# is now up to date. 39# 40# The only cases where we need to modify files which have global 41# effects are thus separated out and done before the recursive 42# descending is started. They are now explicitly listed as the 43# prepare rule. 44 45# Beautify output 46# --------------------------------------------------------------------------- 47# 48# Normally, we echo the whole command before executing it. By making 49# that echo $($(quiet)$(cmd)), we now have the possibility to set 50# $(quiet) to choose other forms of output instead, e.g. 51# 52# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 53# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 54# 55# If $(quiet) is empty, the whole command will be printed. 56# If it is set to "quiet_", only the short version will be printed. 57# If it is set to "silent_", nothing will be printed at all, since 58# the variable $(silent_cmd_cc_o_c) doesn't exist. 59# 60# A simple variant is to prefix commands with $(Q) - that's useful 61# for commands that shall be hidden in non-verbose mode. 62# 63# $(Q)ln $@ :< 64# 65# If KBUILD_VERBOSE equals 0 then the above command will be hidden. 66# If KBUILD_VERBOSE equals 1 then the above command is displayed. 67# 68# To put more focus on warnings, be less verbose as default 69# Use 'make V=1' to see the full commands 70 71ifeq ("$(origin V)", "command line") 72 KBUILD_VERBOSE = $(V) 73endif 74ifndef KBUILD_VERBOSE 75 KBUILD_VERBOSE = 0 76endif 77 78ifeq ($(KBUILD_VERBOSE),1) 79 quiet = 80 Q = 81else 82 quiet=quiet_ 83 Q = @ 84endif 85 86# If the user is running make -s (silent mode), suppress echoing of 87# commands 88 89ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4 90ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),) 91 quiet=silent_ 92endif 93else # make-3.8x 94ifneq ($(filter s% -s%,$(MAKEFLAGS)),) 95 quiet=silent_ 96endif 97endif 98 99export quiet Q KBUILD_VERBOSE 100 101# kbuild supports saving output files in a separate directory. 102# To locate output files in a separate directory two syntaxes are supported. 103# In both cases the working directory must be the root of the kernel src. 104# 1) O= 105# Use "make O=dir/to/store/output/files/" 106# 107# 2) Set KBUILD_OUTPUT 108# Set the environment variable KBUILD_OUTPUT to point to the directory 109# where the output files shall be placed. 110# export KBUILD_OUTPUT=dir/to/store/output/files/ 111# make 112# 113# The O= assignment takes precedence over the KBUILD_OUTPUT environment 114# variable. 115 116# KBUILD_SRC is set on invocation of make in OBJ directory 117# KBUILD_SRC is not intended to be used by the regular user (for now) 118ifeq ($(KBUILD_SRC),) 119 120# OK, Make called in directory where kernel src resides 121# Do we want to locate output files in a separate directory? 122ifeq ("$(origin O)", "command line") 123 KBUILD_OUTPUT := $(O) 124endif 125 126# That's our default target when none is given on the command line 127PHONY := _all 128_all: 129 130# Cancel implicit rules on top Makefile 131$(CURDIR)/Makefile Makefile: ; 132 133ifneq ($(KBUILD_OUTPUT),) 134# Invoke a second make in the output directory, passing relevant variables 135# check that the output directory actually exists 136saved-output := $(KBUILD_OUTPUT) 137KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ 138 && /bin/pwd) 139$(if $(KBUILD_OUTPUT),, \ 140 $(error failed to create output directory "$(saved-output)")) 141 142PHONY += $(MAKECMDGOALS) sub-make 143 144$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make 145 @: 146 147sub-make: FORCE 148 $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ 149 -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) 150 151# Leave processing to above invocation of make 152skip-makefile := 1 153endif # ifneq ($(KBUILD_OUTPUT),) 154endif # ifeq ($(KBUILD_SRC),) 155 156# We process the rest of the Makefile if this is the final invocation of make 157ifeq ($(skip-makefile),) 158 159# Do not print "Entering directory ...", 160# but we want to display it when entering to the output directory 161# so that IDEs/editors are able to understand relative filenames. 162MAKEFLAGS += --no-print-directory 163 164# Call a source code checker (by default, "sparse") as part of the 165# C compilation. 166# 167# Use 'make C=1' to enable checking of only re-compiled files. 168# Use 'make C=2' to enable checking of *all* source files, regardless 169# of whether they are re-compiled or not. 170# 171# See the file "Documentation/sparse.txt" for more details, including 172# where to get the "sparse" utility. 173 174ifeq ("$(origin C)", "command line") 175 KBUILD_CHECKSRC = $(C) 176endif 177ifndef KBUILD_CHECKSRC 178 KBUILD_CHECKSRC = 0 179endif 180 181# Use make M=dir to specify directory of external module to build 182# Old syntax make ... SUBDIRS=$PWD is still supported 183# Setting the environment variable KBUILD_EXTMOD take precedence 184ifdef SUBDIRS 185 KBUILD_EXTMOD ?= $(SUBDIRS) 186endif 187 188ifeq ("$(origin M)", "command line") 189 KBUILD_EXTMOD := $(M) 190endif 191 192# If building an external module we do not care about the all: rule 193# but instead _all depend on modules 194PHONY += all 195ifeq ($(KBUILD_EXTMOD),) 196_all: all 197else 198_all: modules 199endif 200 201ifeq ($(KBUILD_SRC),) 202 # building in the source tree 203 srctree := . 204else 205 ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR))) 206 # building in a subdirectory of the source tree 207 srctree := .. 208 else 209 srctree := $(KBUILD_SRC) 210 endif 211endif 212objtree := . 213src := $(srctree) 214obj := $(objtree) 215 216VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 217 218export srctree objtree VPATH 219 220# Make sure CDPATH settings don't interfere 221unexport CDPATH 222 223######################################################################### 224 225HOSTARCH := $(shell uname -m | \ 226 sed -e s/i.86/x86/ \ 227 -e s/sun4u/sparc64/ \ 228 -e s/arm.*/arm/ \ 229 -e s/sa110/arm/ \ 230 -e s/ppc64/powerpc/ \ 231 -e s/ppc/powerpc/ \ 232 -e s/macppc/powerpc/\ 233 -e s/sh.*/sh/) 234 235HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \ 236 sed -e 's/\(cygwin\).*/cygwin/') 237 238export HOSTARCH HOSTOS 239 240######################################################################### 241 242# set default to nothing for native builds 243ifeq ($(HOSTARCH),$(ARCH)) 244CROSS_COMPILE ?= 245endif 246 247KCONFIG_CONFIG ?= .config 248export KCONFIG_CONFIG 249 250# SHELL used by kbuild 251CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 252 else if [ -x /bin/bash ]; then echo /bin/bash; \ 253 else echo sh; fi ; fi) 254 255HOSTCC = cc 256HOSTCXX = c++ 257HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \ 258 $(if $(CONFIG_TOOLS_DEBUG),-g) 259HOSTCXXFLAGS = -O2 260 261# With the move to GCC 6, we have implicitly upgraded our language 262# standard to GNU11 (see https://gcc.gnu.org/gcc-5/porting_to.html). 263# Some Linux distributions (including RHEL7, SLES13, Debian 8) still 264# have older compilers as their default, so we make it explicit for 265# these that our host tools are GNU11 (i.e. C11 w/ GNU extensions). 266CSTD_FLAG := -std=gnu11 267ifeq ($(HOSTOS),linux) 268HOSTCFLAGS += $(CSTD_FLAG) 269endif 270 271ifeq ($(HOSTOS),cygwin) 272HOSTCFLAGS += -ansi 273endif 274 275# Mac OS X / Darwin's C preprocessor is Apple specific. It 276# generates numerous errors and warnings. We want to bypass it 277# and use GNU C's cpp. To do this we pass the -traditional-cpp 278# option to the compiler. Note that the -traditional-cpp flag 279# DOES NOT have the same semantics as GNU C's flag, all it does 280# is invoke the GNU preprocessor in stock ANSI/ISO C fashion. 281# 282# Apple's linker is similar, thanks to the new 2 stage linking 283# multiple symbol definitions are treated as errors, hence the 284# -multiply_defined suppress option to turn off this error. 285# 286ifeq ($(HOSTOS),darwin) 287# get major and minor product version (e.g. '10' and '6' for Snow Leopard) 288DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.') 289DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.') 290 291os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \ 292 $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;) 293 294# Snow Leopards build environment has no longer restrictions as described above 295HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc") 296HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp") 297HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress") 298 299# since Lion (10.7) ASLR is on by default, but we use linker generated lists 300# in some host tools which is a problem then ... so disable ASLR for these 301# tools 302HOSTLDFLAGS += $(call os_x_before, 10, 7, "", "-Xlinker -no_pie") 303endif 304 305# Decide whether to build built-in, modular, or both. 306# Normally, just do built-in. 307 308KBUILD_MODULES := 309KBUILD_BUILTIN := 1 310 311# If we have only "make modules", don't compile built-in objects. 312# When we're building modules with modversions, we need to consider 313# the built-in objects during the descend as well, in order to 314# make sure the checksums are up to date before we record them. 315 316ifeq ($(MAKECMDGOALS),modules) 317 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) 318endif 319 320# If we have "make <whatever> modules", compile modules 321# in addition to whatever we do anyway. 322# Just "make" or "make all" shall build modules as well 323 324# U-Boot does not need modules 325#ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) 326# KBUILD_MODULES := 1 327#endif 328 329#ifeq ($(MAKECMDGOALS),) 330# KBUILD_MODULES := 1 331#endif 332 333export KBUILD_MODULES KBUILD_BUILTIN 334export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD 335 336# We need some generic definitions (do not try to remake the file). 337scripts/Kbuild.include: ; 338include scripts/Kbuild.include 339 340# Make variables (CC, etc...) 341 342AS = $(CROSS_COMPILE)as 343# Always use GNU ld 344ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),) 345LD = $(CROSS_COMPILE)ld.bfd 346else 347LD = $(CROSS_COMPILE)ld 348endif 349CC = $(CROSS_COMPILE)gcc 350CPP = $(CC) -E 351AR = $(CROSS_COMPILE)ar 352NM = $(CROSS_COMPILE)nm 353LDR = $(CROSS_COMPILE)ldr 354STRIP = $(CROSS_COMPILE)strip 355OBJCOPY = $(CROSS_COMPILE)objcopy 356OBJDUMP = $(CROSS_COMPILE)objdump 357LEX = flex 358YACC = bison 359AWK = awk 360PERL = perl 361PYTHON ?= python 362PYTHON2 = python2 363PYTHON3 = python3 364DTC ?= $(objtree)/scripts/dtc/dtc 365CHECK = sparse 366 367CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 368 -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF) 369 370KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__ 371 372KBUILD_CFLAGS := -Wall -Wstrict-prototypes \ 373 -Wno-format-security \ 374 -fno-builtin -ffreestanding $(CSTD_FLAG) 375KBUILD_CFLAGS += -fshort-wchar -fno-strict-aliasing 376KBUILD_AFLAGS := -D__ASSEMBLY__ 377 378# Don't generate position independent code 379KBUILD_CFLAGS += $(call cc-option,-fno-PIE) 380KBUILD_AFLAGS += $(call cc-option,-fno-PIE) 381 382# Read UBOOTRELEASE from include/config/uboot.release (if it exists) 383UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null) 384UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 385 386export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION 387export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR 388export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC 389export CPP AR NM LDR STRIP OBJCOPY OBJDUMP 390export MAKE LEX YACC AWK PERL PYTHON PYTHON2 PYTHON3 391export HOSTCXX HOSTCXXFLAGS CHECK CHECKFLAGS DTC DTC_FLAGS 392 393export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS 394export KBUILD_CFLAGS KBUILD_AFLAGS 395 396# When compiling out-of-tree modules, put MODVERDIR in the module 397# tree rather than in the kernel tree. The kernel tree might 398# even be read-only. 399export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 400 401# Files to ignore in find ... statements 402 403export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 404 -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 405 -prune -o 406export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ 407 --exclude CVS --exclude .pc --exclude .hg --exclude .git 408 409# =========================================================================== 410# Rules shared between *config targets and build targets 411 412# Basic helpers built in scripts/ 413PHONY += scripts_basic 414scripts_basic: 415 $(Q)$(MAKE) $(build)=scripts/basic 416 $(Q)rm -f .tmp_quiet_recordmcount 417 418# To avoid any implicit rule to kick in, define an empty command. 419scripts/basic/%: scripts_basic ; 420 421PHONY += outputmakefile 422# outputmakefile generates a Makefile in the output directory, if using a 423# separate output directory. This allows convenient use of make in the 424# output directory. 425outputmakefile: 426ifneq ($(KBUILD_SRC),) 427 $(Q)ln -fsn $(srctree) source 428 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 429 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) 430endif 431 432# To make sure we do not include .config for any of the *config targets 433# catch them early, and hand them over to scripts/kconfig/Makefile 434# It is allowed to specify more targets when calling make, including 435# mixing *config targets and build targets. 436# For example 'make oldconfig all'. 437# Detect when mixed targets is specified, and make a second invocation 438# of make so .config is not included in this case either (for *config). 439 440version_h := include/generated/version_autogenerated.h 441timestamp_h := include/generated/timestamp_autogenerated.h 442defaultenv_h := include/generated/defaultenv_autogenerated.h 443 444no-dot-config-targets := clean clobber mrproper distclean \ 445 help %docs check% coccicheck \ 446 ubootversion backup tests check qcheck 447 448config-targets := 0 449mixed-targets := 0 450dot-config := 1 451 452ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 453 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 454 dot-config := 0 455 endif 456endif 457 458ifeq ($(KBUILD_EXTMOD),) 459 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 460 config-targets := 1 461 ifneq ($(words $(MAKECMDGOALS)),1) 462 mixed-targets := 1 463 endif 464 endif 465endif 466 467ifeq ($(mixed-targets),1) 468# =========================================================================== 469# We're called with mixed targets (*config and build targets). 470# Handle them one by one. 471 472PHONY += $(MAKECMDGOALS) __build_one_by_one 473 474$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one 475 @: 476 477__build_one_by_one: 478 $(Q)set -e; \ 479 for i in $(MAKECMDGOALS); do \ 480 $(MAKE) -f $(srctree)/Makefile $$i; \ 481 done 482 483else 484ifeq ($(config-targets),1) 485# =========================================================================== 486# *config targets only - make sure prerequisites are updated, and descend 487# in scripts/kconfig to make the *config target 488 489KBUILD_DEFCONFIG := sandbox_defconfig 490export KBUILD_DEFCONFIG KBUILD_KCONFIG 491 492config: scripts_basic outputmakefile FORCE 493 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 494 495%config: scripts_basic outputmakefile FORCE 496 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 497 498else 499# =========================================================================== 500# Build targets only - this includes vmlinux, arch specific targets, clean 501# targets and others. In general all targets except *config targets. 502 503# Additional helpers built in scripts/ 504# Carefully list dependencies so we do not try to build scripts twice 505# in parallel 506PHONY += scripts 507scripts: scripts_basic include/config/auto.conf 508 $(Q)$(MAKE) $(build)=$(@) 509 510ifeq ($(dot-config),1) 511# Read in config 512-include include/config/auto.conf 513 514# Read in dependencies to all Kconfig* files, make sure to run 515# oldconfig if changes are detected. 516-include include/config/auto.conf.cmd 517 518# To avoid any implicit rule to kick in, define an empty command 519$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; 520 521# If .config is newer than include/config/auto.conf, someone tinkered 522# with it and forgot to run make oldconfig. 523# if auto.conf.cmd is missing then we are probably in a cleaned tree so 524# we execute the config step to be sure to catch updated Kconfig files 525include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd 526 $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig 527 @# If the following part fails, include/config/auto.conf should be 528 @# deleted so "make silentoldconfig" will be re-run on the next build. 529 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf || \ 530 { rm -f include/config/auto.conf; false; } 531 @# include/config.h has been updated after "make silentoldconfig". 532 @# We need to touch include/config/auto.conf so it gets newer 533 @# than include/config.h. 534 @# Otherwise, 'make silentoldconfig' would be invoked twice. 535 $(Q)touch include/config/auto.conf 536 537u-boot.cfg spl/u-boot.cfg tpl/u-boot.cfg: include/config.h FORCE 538 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf $(@) 539 540-include include/autoconf.mk 541-include include/autoconf.mk.dep 542 543# We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf 544# is up-to-date. When we switch to a different board configuration, old CONFIG 545# macros are still remaining in include/config/auto.conf. Without the following 546# gimmick, wrong config.mk would be included leading nasty warnings/errors. 547ifneq ($(wildcard $(KCONFIG_CONFIG)),) 548ifneq ($(wildcard include/config/auto.conf),) 549autoconf_is_old := $(shell find . -path ./$(KCONFIG_CONFIG) -newer \ 550 include/config/auto.conf) 551ifeq ($(autoconf_is_old),) 552include config.mk 553include arch/$(ARCH)/Makefile 554endif 555endif 556endif 557 558# These are set by the arch-specific config.mk. Make sure they are exported 559# so they can be used when building an EFI application. 560export EFI_LDS # Filename of EFI link script in arch/$(ARCH)/lib 561export EFI_CRT0 # Filename of EFI CRT0 in arch/$(ARCH)/lib 562export EFI_RELOC # Filename of EFU relocation code in arch/$(ARCH)/lib 563export CFLAGS_EFI # Compiler flags to add when building EFI app 564export CFLAGS_NON_EFI # Compiler flags to remove when building EFI app 565export EFI_TARGET # binutils target if EFI is natively supported 566 567# If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use 568# that (or fail if absent). Otherwise, search for a linker script in a 569# standard location. 570 571ifndef LDSCRIPT 572 #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug 573 ifdef CONFIG_SYS_LDSCRIPT 574 # need to strip off double quotes 575 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%) 576 endif 577endif 578 579# If there is no specified link script, we look in a number of places for it 580ifndef LDSCRIPT 581 ifeq ($(wildcard $(LDSCRIPT)),) 582 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds 583 endif 584 ifeq ($(wildcard $(LDSCRIPT)),) 585 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds 586 endif 587 ifeq ($(wildcard $(LDSCRIPT)),) 588 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds 589 endif 590endif 591 592else 593# Dummy target needed, because used as prerequisite 594include/config/auto.conf: ; 595endif # $(dot-config) 596 597# 598# Xtensa linker script cannot be preprocessed with -ansi because of 599# preprocessor operations on strings that don't make C identifiers. 600# 601ifeq ($(CONFIG_XTENSA),) 602LDPPFLAGS += -ansi 603endif 604 605ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 606KBUILD_CFLAGS += -Os 607else 608KBUILD_CFLAGS += -O2 609endif 610 611KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) 612KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks) 613 614# change __FILE__ to the relative path from the srctree 615KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) 616 617KBUILD_CFLAGS += -g 618# $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format> 619# option to the assembler. 620KBUILD_AFLAGS += -g 621 622# Report stack usage if supported 623# ARC tools based on GCC 7.1 has an issue with stack usage 624# with naked functions, see commit message for more details 625ifndef CONFIG_ARC 626ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y) 627 KBUILD_CFLAGS += -fstack-usage 628endif 629endif 630 631KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral) 632ifeq ($(cc-name),clang) 633KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) 634KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) 635KBUILD_CFLAGS += $(call cc-disable-warning, gnu) 636KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) 637KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) 638endif 639 640# turn jbsr into jsr for m68k 641ifeq ($(ARCH),m68k) 642ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4) 643KBUILD_AFLAGS += -Wa,-gstabs,-S 644endif 645endif 646 647# Prohibit date/time macros, which would make the build non-deterministic 648KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) 649 650include scripts/Makefile.extrawarn 651 652# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 653KBUILD_CPPFLAGS += $(KCPPFLAGS) 654KBUILD_AFLAGS += $(KAFLAGS) 655KBUILD_CFLAGS += $(KCFLAGS) 656 657# Use UBOOTINCLUDE when you must reference the include/ directory. 658# Needed to be compatible with the O= option 659UBOOTINCLUDE := \ 660 -Iinclude \ 661 $(if $(KBUILD_SRC), -I$(srctree)/include) \ 662 $(if $(CONFIG_$(SPL_)SYS_THUMB_BUILD), \ 663 $(if $(CONFIG_HAS_THUMB2),, \ 664 -I$(srctree)/arch/$(ARCH)/thumb1/include),) \ 665 -I$(srctree)/arch/$(ARCH)/include \ 666 -include $(srctree)/include/linux/kconfig.h 667 668NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 669CHECKFLAGS += $(NOSTDINC_FLAGS) 670 671# FIX ME 672cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \ 673 $(NOSTDINC_FLAGS) 674c_flags := $(KBUILD_CFLAGS) $(cpp_flags) 675 676######################################################################### 677# U-Boot objects....order is important (i.e. start must be first) 678 679HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n) 680 681libs-y += lib/ 682libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/ 683libs-$(CONFIG_OF_EMBED) += dts/ 684libs-y += fs/ 685libs-y += net/ 686libs-y += disk/ 687libs-y += drivers/ 688libs-y += drivers/dma/ 689libs-y += drivers/gpio/ 690libs-y += drivers/i2c/ 691libs-y += drivers/mtd/ 692libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/raw/ 693libs-y += drivers/mtd/onenand/ 694libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/ 695libs-y += drivers/mtd/spi/ 696libs-y += drivers/net/ 697libs-y += drivers/net/phy/ 698libs-y += drivers/pci/ 699libs-y += drivers/power/ \ 700 drivers/power/domain/ \ 701 drivers/power/fuel_gauge/ \ 702 drivers/power/mfd/ \ 703 drivers/power/pmic/ \ 704 drivers/power/battery/ \ 705 drivers/power/regulator/ 706libs-y += drivers/spi/ 707libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/ 708libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/ 709libs-$(CONFIG_SYS_FSL_MMDC) += drivers/ddr/fsl/ 710libs-$(CONFIG_ALTERA_SDRAM) += drivers/ddr/altera/ 711libs-y += drivers/serial/ 712libs-y += drivers/usb/dwc3/ 713libs-y += drivers/usb/common/ 714libs-y += drivers/usb/emul/ 715libs-y += drivers/usb/eth/ 716libs-y += drivers/usb/gadget/ 717libs-y += drivers/usb/gadget/udc/ 718libs-y += drivers/usb/host/ 719libs-y += drivers/usb/musb/ 720libs-y += drivers/usb/musb-new/ 721libs-y += drivers/usb/phy/ 722libs-y += drivers/usb/ulpi/ 723libs-y += cmd/ 724libs-y += common/ 725libs-y += env/ 726libs-$(CONFIG_API) += api/ 727libs-$(CONFIG_HAS_POST) += post/ 728libs-y += test/ 729libs-y += test/dm/ 730libs-$(CONFIG_UT_ENV) += test/env/ 731libs-$(CONFIG_UT_OVERLAY) += test/overlay/ 732 733libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/) 734 735libs-y := $(sort $(libs-y)) 736 737u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples 738 739u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-)))) 740 741libs-y := $(patsubst %/, %/built-in.o, $(libs-y)) 742 743u-boot-init := $(head-y) 744u-boot-main := $(libs-y) 745 746 747# Add GCC lib 748ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y) 749PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a 750else 751PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc 752endif 753PLATFORM_LIBS += $(PLATFORM_LIBGCC) 754 755ifdef CONFIG_CC_COVERAGE 756KBUILD_CFLAGS += --coverage 757PLATFORM_LIBGCC += -lgcov 758endif 759 760export PLATFORM_LIBS 761export PLATFORM_LIBGCC 762 763# Special flags for CPP when processing the linker script. 764# Pass the version down so we can handle backwards compatibility 765# on the fly. 766LDPPFLAGS += \ 767 -include $(srctree)/include/u-boot/u-boot.lds.h \ 768 -DCPUDIR=$(CPUDIR) \ 769 $(shell $(LD) --version | \ 770 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p') 771 772######################################################################### 773######################################################################### 774 775ifneq ($(CONFIG_BOARD_SIZE_LIMIT),) 776BOARD_SIZE_CHECK = \ 777 @actual=`wc -c $@ | awk '{print $$1}'`; \ 778 limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \ 779 if test $$actual -gt $$limit; then \ 780 echo "$@ exceeds file size limit:" >&2 ; \ 781 echo " limit: $$limit bytes" >&2 ; \ 782 echo " actual: $$actual bytes" >&2 ; \ 783 echo " excess: $$((actual - limit)) bytes" >&2; \ 784 exit 1; \ 785 fi 786else 787BOARD_SIZE_CHECK = 788endif 789 790# Statically apply RELA-style relocations (currently arm64 only) 791# This is useful for arm64 where static relocation needs to be performed on 792# the raw binary, but certain simulators only accept an ELF file (but don't 793# do the relocation). 794ifneq ($(CONFIG_STATIC_RELA),) 795# $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base 796DO_STATIC_RELA = \ 797 start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \ 798 end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \ 799 tools/relocate-rela $(2) $(3) $$start $$end 800else 801DO_STATIC_RELA = 802endif 803 804# Always append ALL so that arch config.mk's can add custom ones 805ALL-y += u-boot.srec u-boot.bin u-boot.sym System.map binary_size_check 806 807ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin 808ifeq ($(CONFIG_SPL_FSL_PBL),y) 809ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin 810else 811ifneq ($(CONFIG_SECURE_BOOT), y) 812# For Secure Boot The Image needs to be signed and Header must also 813# be included. So The image has to be built explicitly 814ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl 815endif 816endif 817ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin 818ifeq ($(CONFIG_MX6)$(CONFIG_SECURE_BOOT), yy) 819ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img 820else 821ifeq ($(CONFIG_MX7)$(CONFIG_SECURE_BOOT), yy) 822ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img 823else 824ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img 825endif 826endif 827ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin 828ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb 829ifeq ($(CONFIG_SPL_FRAMEWORK),y) 830ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img 831endif 832ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb 833ifneq ($(CONFIG_SPL_TARGET),) 834ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%) 835endif 836ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf 837ALL-$(CONFIG_EFI_APP) += u-boot-app.efi 838ALL-$(CONFIG_EFI_STUB) += u-boot-payload.efi 839 840ifneq ($(BUILD_ROM)$(CONFIG_BUILD_ROM),) 841ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom 842endif 843 844# Build a combined spl + u-boot image for sunxi 845ifeq ($(CONFIG_ARCH_SUNXI)$(CONFIG_SPL),yy) 846ALL-y += u-boot-sunxi-with-spl.bin 847endif 848 849# enable combined SPL/u-boot/dtb rules for tegra 850ifeq ($(CONFIG_TEGRA)$(CONFIG_SPL),yy) 851ALL-y += u-boot-tegra.bin u-boot-nodtb-tegra.bin 852ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb-tegra.bin 853endif 854 855ALL-$(CONFIG_ARCH_MEDIATEK) += u-boot-mtk.bin 856 857# Add optional build target if defined in board/cpu/soc headers 858ifneq ($(CONFIG_BUILD_TARGET),) 859ALL-y += $(CONFIG_BUILD_TARGET:"%"=%) 860endif 861 862ifneq ($(CONFIG_SYS_INIT_SP_BSS_OFFSET),) 863ALL-y += init_sp_bss_offset_check 864endif 865 866ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy) 867ALL-y += u-boot-with-dtb.bin 868endif 869 870LDFLAGS_u-boot += $(LDFLAGS_FINAL) 871 872# Avoid 'Not enough room for program headers' error on binutils 2.28 onwards. 873LDFLAGS_u-boot += $(call ld-option, --no-dynamic-linker) 874 875ifeq ($(CONFIG_ARC)$(CONFIG_NIOS2)$(CONFIG_X86)$(CONFIG_XTENSA),) 876LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE) 877endif 878 879# Normally we fill empty space with 0xff 880quiet_cmd_objcopy = OBJCOPY $@ 881cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \ 882 $(OBJCOPYFLAGS_$(@F)) $< $@ 883 884# Provide a version which does not do this, for use by EFI 885quiet_cmd_zobjcopy = OBJCOPY $@ 886cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ 887 888quiet_cmd_efipayload = OBJCOPY $@ 889cmd_efipayload = $(OBJCOPY) -I binary -O $(EFIPAYLOAD_BFDTARGET) -B $(EFIPAYLOAD_BFDARCH) $< $@ 890 891MKIMAGEOUTPUT ?= /dev/null 892 893quiet_cmd_mkimage = MKIMAGE $@ 894cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \ 895 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT)) 896 897quiet_cmd_mkfitimage = MKIMAGE $@ 898cmd_mkfitimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -f $(U_BOOT_ITS) -E $@ \ 899 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT)) 900 901quiet_cmd_cat = CAT $@ 902cmd_cat = cat $(filter-out $(PHONY), $^) > $@ 903 904append = cat $(filter-out $< $(PHONY), $^) >> $@ 905 906quiet_cmd_pad_cat = CAT $@ 907cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@ 908 909cfg: u-boot.cfg 910 911quiet_cmd_cfgcheck = CFGCHK $2 912cmd_cfgcheck = $(srctree)/scripts/check-config.sh $2 \ 913 $(srctree)/scripts/config_whitelist.txt $(srctree) 914 915all: $(ALL-y) cfg 916ifeq ($(CONFIG_DM_I2C_COMPAT)$(CONFIG_SANDBOX),y) 917 @echo "===================== WARNING ======================" 918 @echo "This board uses CONFIG_DM_I2C_COMPAT. Please remove" 919 @echo "(possibly in a subsequent patch in your series)" 920 @echo "before sending patches to the mailing list." 921 @echo "====================================================" 922endif 923ifeq ($(CONFIG_MMC),y) 924ifneq ($(CONFIG_DM_MMC)$(CONFIG_OF_CONTROL)$(CONFIG_BLK),yyy) 925 @echo "===================== WARNING ======================" 926 @echo "This board does not use CONFIG_DM_MMC. Please update" 927 @echo "the board to use CONFIG_DM_MMC before the v2019.04 release." 928 @echo "Failure to update by the deadline may result in board removal." 929 @echo "See doc/driver-model/MIGRATION.txt for more info." 930 @echo "====================================================" 931endif 932endif 933ifeq ($(CONFIG_USB),y) 934ifneq ($(CONFIG_DM_USB)$(CONFIG_OF_CONTROL)$(CONFIG_BLK),yyy) 935 @echo "===================== WARNING ======================" 936 @echo "This board does not use CONFIG_DM_USB. Please update" 937 @echo "the board to use CONFIG_DM_USB before the v2019.07 release." 938 @echo "Failure to update by the deadline may result in board removal." 939 @echo "See doc/driver-model/MIGRATION.txt for more info." 940 @echo "====================================================" 941endif 942endif 943ifeq ($(CONFIG_LIBATA)$(CONFIG_DM_SCSI)$(CONFIG_MVSATA_IDE),y) 944 @echo "===================== WARNING ======================" 945 @echo "This board does not use CONFIG_DM_SCSI. Please update" 946 @echo "the storage controller to use CONFIG_DM_SCSI before the v2019.07 release." 947 @echo "Failure to update by the deadline may result in board removal." 948 @echo "See doc/driver-model/MIGRATION.txt for more info." 949 @echo "====================================================" 950endif 951 @# Check that this build does not use CONFIG options that we do not 952 @# know about unless they are in Kconfig. All the existing CONFIG 953 @# options are whitelisted, so new ones should not be added. 954 $(call cmd,cfgcheck,u-boot.cfg) 955 956PHONY += dtbs 957dtbs: dts/dt.dtb 958 @: 959dts/dt.dtb: u-boot 960 $(Q)$(MAKE) $(build)=dts dtbs 961 962quiet_cmd_copy = COPY $@ 963 cmd_copy = cp $< $@ 964 965ifeq ($(CONFIG_MULTI_DTB_FIT),y) 966 967fit-dtb.blob: dts/dt.dtb FORCE 968 $(call if_changed,mkimage) 969 970MKIMAGEFLAGS_fit-dtb.blob = -f auto -A $(ARCH) -T firmware -C none -O u-boot \ 971 -a 0 -e 0 -E \ 972 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) -d /dev/null 973 974u-boot-fit-dtb.bin: u-boot-nodtb.bin fit-dtb.blob 975 $(call if_changed,cat) 976 977u-boot.bin: u-boot-fit-dtb.bin FORCE 978 $(call if_changed,copy) 979else ifeq ($(CONFIG_OF_SEPARATE),y) 980u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE 981 $(call if_changed,cat) 982 983u-boot.bin: u-boot-dtb.bin FORCE 984 $(call if_changed,copy) 985else 986u-boot.bin: u-boot-nodtb.bin FORCE 987 $(call if_changed,copy) 988endif 989 990%.imx: %.bin 991 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 992 993%.vyb: %.imx 994 $(Q)$(MAKE) $(build)=arch/arm/cpu/armv7/vf610 $@ 995 996quiet_cmd_copy = COPY $@ 997 cmd_copy = cp $< $@ 998 999u-boot.dtb: dts/dt.dtb 1000 $(call cmd,copy) 1001 1002OBJCOPYFLAGS_u-boot.hex := -O ihex 1003 1004OBJCOPYFLAGS_u-boot.srec := -O srec 1005 1006u-boot.hex u-boot.srec: u-boot FORCE 1007 $(call if_changed,objcopy) 1008 1009OBJCOPYFLAGS_u-boot-elf.srec := $(OBJCOPYFLAGS_u-boot.srec) 1010 1011u-boot-elf.srec: u-boot.elf FORCE 1012 $(call if_changed,objcopy) 1013 1014OBJCOPYFLAGS_u-boot-spl.srec = $(OBJCOPYFLAGS_u-boot.srec) 1015 1016spl/u-boot-spl.srec: spl/u-boot-spl FORCE 1017 $(call if_changed,objcopy) 1018 1019OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \ 1020 $(if $(CONFIG_X86_16BIT_INIT),-R .start16 -R .resetvec) \ 1021 $(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR),-R .bootpg -R .resetvec) 1022 1023OBJCOPYFLAGS_u-boot-spl.hex = $(OBJCOPYFLAGS_u-boot.hex) 1024 1025spl/u-boot-spl.hex: spl/u-boot-spl FORCE 1026 $(call if_changed,objcopy) 1027 1028binary_size_check: u-boot-nodtb.bin FORCE 1029 @file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \ 1030 map_size=$(shell cat u-boot.map | \ 1031 awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \ 1032 | sed 's/0X//g' \ 1033 | bc); \ 1034 if [ "" != "$$map_size" ]; then \ 1035 if test $$map_size -ne $$file_size; then \ 1036 echo "u-boot.map shows a binary size of $$map_size" >&2 ; \ 1037 echo " but u-boot-nodtb.bin shows $$file_size" >&2 ; \ 1038 exit 1; \ 1039 fi \ 1040 fi 1041 1042ifneq ($(CONFIG_SYS_INIT_SP_BSS_OFFSET),) 1043ifneq ($(CONFIG_SYS_MALLOC_F_LEN),) 1044subtract_sys_malloc_f_len = space=$$(($${space} - $(CONFIG_SYS_MALLOC_F_LEN))) 1045else 1046subtract_sys_malloc_f_len = true 1047endif 1048# The 1/4 margin below is somewhat arbitrary. The likely initial SP usage is 1049# so low that the DTB could probably use 90%+ of the available space, for 1050# current values of CONFIG_SYS_INIT_SP_BSS_OFFSET at least. However, let's be 1051# safe for now and tweak this later if space becomes tight. 1052# A rejected alternative would be to check that some absolute minimum stack 1053# space was available. However, since CONFIG_SYS_INIT_SP_BSS_OFFSET is 1054# deliberately build-specific, to take account of build-to-build stack usage 1055# differences due to different feature sets, there is no common absolute value 1056# to check against. 1057init_sp_bss_offset_check: u-boot.dtb FORCE 1058 @dtb_size=$(shell wc -c u-boot.dtb | awk '{print $$1}') ; \ 1059 space=$(CONFIG_SYS_INIT_SP_BSS_OFFSET) ; \ 1060 $(subtract_sys_malloc_f_len) ; \ 1061 quarter_space=$$(($${space} / 4)) ; \ 1062 if [ $${dtb_size} -gt $${quarter_space} ]; then \ 1063 echo "u-boot.dtb is larger than 1 quarter of " >&2 ; \ 1064 echo "(CONFIG_SYS_INIT_SP_BSS_OFFSET - CONFIG_SYS_MALLOC_F_LEN)" >&2 ; \ 1065 exit 1 ; \ 1066 fi 1067endif 1068 1069u-boot-nodtb.bin: u-boot FORCE 1070 $(call if_changed,objcopy) 1071 $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE)) 1072 $(BOARD_SIZE_CHECK) 1073 1074u-boot.ldr: u-boot 1075 $(CREATE_LDR_ENV) 1076 $(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS) 1077 $(BOARD_SIZE_CHECK) 1078 1079# binman 1080# --------------------------------------------------------------------------- 1081# Use 'make BINMAN_DEBUG=1' to enable debugging 1082quiet_cmd_binman = BINMAN $@ 1083cmd_binman = $(srctree)/tools/binman/binman -u -d u-boot.dtb -O . -m \ 1084 -I . -I $(srctree) -I $(srctree)/board/$(BOARDDIR) \ 1085 $(if $(BINMAN_DEBUG),-D) $(BINMAN_$(@F)) $< 1086 1087OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex 1088 1089OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec 1090 1091u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE 1092 $(call if_changed,objcopy) 1093 1094# 1095# U-Boot entry point, needed for booting of full-blown U-Boot 1096# from the SPL U-Boot version. 1097# 1098ifndef CONFIG_SYS_UBOOT_START 1099CONFIG_SYS_UBOOT_START := 0 1100endif 1101 1102# Boards with more complex image requirments can provide an .its source file 1103# or a generator script 1104ifneq ($(CONFIG_SPL_FIT_SOURCE),"") 1105U_BOOT_ITS = $(subst ",,$(CONFIG_SPL_FIT_SOURCE)) 1106else 1107ifneq ($(CONFIG_SPL_FIT_GENERATOR),"") 1108U_BOOT_ITS := u-boot.its 1109ifeq ($(CONFIG_SPL_FIT_GENERATOR),"arch/arm/mach-rockchip/make_fit_atf.py") 1110U_BOOT_ITS_DEPS += u-boot 1111endif 1112$(U_BOOT_ITS): $(U_BOOT_ITS_DEPS) FORCE 1113 $(srctree)/$(CONFIG_SPL_FIT_GENERATOR) \ 1114 $(patsubst %,arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) > $@ 1115endif 1116endif 1117 1118ifdef CONFIG_SPL_LOAD_FIT 1119MKIMAGEFLAGS_u-boot.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \ 1120 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \ 1121 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \ 1122 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) 1123else 1124MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \ 1125 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \ 1126 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" 1127MKIMAGEFLAGS_u-boot-ivt.img = -A $(ARCH) -T firmware_ivt -C none -O u-boot \ 1128 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \ 1129 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" 1130u-boot-ivt.img: MKIMAGEOUTPUT = u-boot-ivt.img.log 1131CLEAN_FILES += u-boot-ivt.img.log u-boot-dtb.imx.log SPL.log u-boot.imx.log 1132endif 1133 1134MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img) 1135 1136MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \ 1137 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) 1138 1139MKIMAGEFLAGS_u-boot-spl.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \ 1140 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \ 1141 $(if $(KEYDIR),-k $(KEYDIR)) 1142 1143MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \ 1144 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage 1145 1146u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl u-boot-ivt.img: \ 1147 $(if $(CONFIG_SPL_LOAD_FIT),u-boot-nodtb.bin dts/dt.dtb,u-boot.bin) FORCE 1148 $(call if_changed,mkimage) 1149 1150u-boot.itb: u-boot-nodtb.bin dts/dt.dtb $(U_BOOT_ITS) FORCE 1151 $(call if_changed,mkfitimage) 1152 $(BOARD_SIZE_CHECK) 1153 1154u-boot-spl.kwb: u-boot.img spl/u-boot-spl.bin FORCE 1155 $(call if_changed,mkimage) 1156 1157u-boot.sha1: u-boot.bin 1158 tools/ubsha1 u-boot.bin 1159 1160u-boot.dis: u-boot 1161 $(OBJDUMP) -d $< > $@ 1162 1163ifneq ($(CONFIG_SPL_PAYLOAD),) 1164SPL_PAYLOAD := $(CONFIG_SPL_PAYLOAD:"%"=%) 1165else 1166SPL_PAYLOAD := u-boot.bin 1167endif 1168 1169OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \ 1170 --pad-to=$(CONFIG_SPL_PAD_TO) 1171u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE 1172 $(call if_changed,pad_cat) 1173 1174ifeq ($(CONFIG_ARCH_LPC32XX)$(CONFIG_SPL),yy) 1175MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE) 1176 1177lpc32xx-spl.img: spl/u-boot-spl.bin FORCE 1178 $(call if_changed,mkimage) 1179 1180OBJCOPYFLAGS_lpc32xx-boot-0.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) 1181 1182lpc32xx-boot-0.bin: lpc32xx-spl.img FORCE 1183 $(call if_changed,objcopy) 1184 1185OBJCOPYFLAGS_lpc32xx-boot-1.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) 1186 1187lpc32xx-boot-1.bin: lpc32xx-spl.img FORCE 1188 $(call if_changed,objcopy) 1189 1190lpc32xx-full.bin: lpc32xx-boot-0.bin lpc32xx-boot-1.bin u-boot.img FORCE 1191 $(call if_changed,cat) 1192 1193CLEAN_FILES += lpc32xx-* 1194endif 1195 1196OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \ 1197 --pad-to=$(CONFIG_TPL_PAD_TO) 1198tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE 1199 $(call if_changed,pad_cat) 1200 1201SPL: spl/u-boot-spl.bin FORCE 1202 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 1203 1204u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE 1205 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 1206 1207MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE) 1208 1209u-boot.ubl: u-boot-with-spl.bin FORCE 1210 $(call if_changed,mkimage) 1211 1212MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \ 1213 $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \ 1214 -T aisimage -e $(CONFIG_SPL_TEXT_BASE) 1215spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE 1216 $(call if_changed,mkimage) 1217 1218OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) 1219u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE 1220 $(call if_changed,pad_cat) 1221 1222u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin 1223 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb 1224u-boot.sb: u-boot.bin spl/u-boot-spl.bin 1225 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb 1226 1227# On x600 (SPEAr600) U-Boot is appended to U-Boot SPL. 1228# Both images are created using mkimage (crc etc), so that the ROM 1229# bootloader can check its integrity. Padding needs to be done to the 1230# SPL image (with mkimage header) and not the binary. Otherwise the resulting image 1231# which is loaded/copied by the ROM bootloader to SRAM doesn't fit. 1232# The resulting image containing both U-Boot images is called u-boot.spr 1233MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \ 1234 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER 1235spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE 1236 $(call if_changed,mkimage) 1237 1238OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \ 1239 --gap-fill=0xff 1240u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE 1241 $(call if_changed,pad_cat) 1242 1243ifneq ($(CONFIG_ARCH_SOCFPGA),) 1244quiet_cmd_socboot = SOCBOOT $@ 1245cmd_socboot = cat spl/u-boot-spl.sfp spl/u-boot-spl.sfp \ 1246 spl/u-boot-spl.sfp spl/u-boot-spl.sfp \ 1247 u-boot.img > $@ || rm -f $@ 1248u-boot-with-spl.sfp: spl/u-boot-spl.sfp u-boot.img FORCE 1249 $(call if_changed,socboot) 1250endif 1251 1252ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy) 1253u-boot-with-dtb.bin: u-boot.bin u-boot.dtb \ 1254 $(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR), u-boot-br.bin) FORCE 1255 $(call if_changed,binman) 1256 1257ifeq ($(CONFIG_MPC85XX_HAVE_RESET_VECTOR),y) 1258OBJCOPYFLAGS_u-boot-br.bin := -O binary -j .bootpg -j .resetvec 1259u-boot-br.bin: u-boot FORCE 1260 $(call if_changed,objcopy) 1261endif 1262endif 1263 1264# x86 uses a large ROM. We fill it with 0xff, put the 16-bit stuff (including 1265# reset vector) at the top, Intel ME descriptor at the bottom, and U-Boot in 1266# the middle. This is handled by binman based on an image description in the 1267# board's device tree. 1268ifneq ($(CONFIG_X86_RESET_VECTOR),) 1269rom: u-boot.rom FORCE 1270 1271refcode.bin: $(srctree)/board/$(BOARDDIR)/refcode.bin FORCE 1272 $(call if_changed,copy) 1273 1274quiet_cmd_ldr = LD $@ 1275cmd_ldr = $(LD) $(LDFLAGS_$(@F)) \ 1276 $(filter-out FORCE,$^) -o $@ 1277 1278u-boot.rom: u-boot-x86-16bit.bin u-boot.bin \ 1279 $(if $(CONFIG_SPL_X86_16BIT_INIT),spl/u-boot-spl.bin) \ 1280 $(if $(CONFIG_HAVE_REFCODE),refcode.bin) FORCE 1281 $(call if_changed,binman) 1282 1283OBJCOPYFLAGS_u-boot-x86-16bit.bin := -O binary -j .start16 -j .resetvec 1284u-boot-x86-16bit.bin: u-boot FORCE 1285 $(call if_changed,objcopy) 1286endif 1287 1288ifneq ($(CONFIG_ARCH_SUNXI),) 1289ifeq ($(CONFIG_ARM64),) 1290u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img u-boot.dtb FORCE 1291 $(call if_changed,binman) 1292else 1293u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.itb FORCE 1294 $(call if_changed,cat) 1295endif 1296endif 1297 1298ifneq ($(CONFIG_TEGRA),) 1299ifneq ($(CONFIG_BINMAN),) 1300# Makes u-boot-dtb-tegra.bin u-boot-tegra.bin u-boot-nodtb-tegra.bin 1301%-dtb-tegra.bin %-tegra.bin %-nodtb-tegra.bin: \ 1302 spl/%-spl %.bin FORCE 1303 $(call if_changed,binman) 1304else 1305OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE) 1306u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot-nodtb.bin FORCE 1307 $(call if_changed,pad_cat) 1308 1309OBJCOPYFLAGS_u-boot-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE) 1310u-boot-tegra.bin: spl/u-boot-spl u-boot.bin FORCE 1311 $(call if_changed,pad_cat) 1312 1313u-boot-dtb-tegra.bin: u-boot-tegra.bin FORCE 1314 $(call if_changed,copy) 1315endif # binman 1316endif 1317 1318OBJCOPYFLAGS_u-boot-app.efi := $(OBJCOPYFLAGS_EFI) 1319u-boot-app.efi: u-boot FORCE 1320 $(call if_changed,zobjcopy) 1321 1322u-boot.bin.o: u-boot.bin FORCE 1323 $(call if_changed,efipayload) 1324 1325u-boot-payload.lds: $(LDSCRIPT_EFI) FORCE 1326 $(call if_changed_dep,cpp_lds) 1327 1328# Rule to link the EFI payload which contains a stub and a U-Boot binary 1329quiet_cmd_u-boot_payload ?= LD $@ 1330 cmd_u-boot_payload ?= $(LD) $(LDFLAGS_EFI_PAYLOAD) -o $@ \ 1331 -T u-boot-payload.lds arch/x86/cpu/call32.o \ 1332 lib/efi/efi.o lib/efi/efi_stub.o u-boot.bin.o \ 1333 $(addprefix arch/$(ARCH)/lib/,$(EFISTUB)) 1334 1335u-boot-payload: u-boot.bin.o u-boot-payload.lds FORCE 1336 $(call if_changed,u-boot_payload) 1337 1338OBJCOPYFLAGS_u-boot-payload.efi := $(OBJCOPYFLAGS_EFI) 1339u-boot-payload.efi: u-boot-payload FORCE 1340 $(call if_changed,zobjcopy) 1341 1342u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE 1343 $(call if_changed,cat) 1344 1345#Add a target to create boot binary having SPL binary in PBI format 1346#concatenated with u-boot binary. It is need by PowerPC SoC having 1347#internal SRAM <= 512KB. 1348MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \ 1349 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \ 1350 -A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE) 1351 1352spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE 1353 $(call if_changed,mkimage) 1354 1355ifeq ($(ARCH),arm) 1356UBOOT_BINLOAD := u-boot.img 1357else 1358ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy) 1359UBOOT_BINLOAD := u-boot-with-dtb.bin 1360else 1361UBOOT_BINLOAD := u-boot.bin 1362endif 1363endif 1364 1365OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \ 1366 --gap-fill=0xff 1367 1368u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE 1369 $(call if_changed,pad_cat) 1370 1371# PPC4xx needs the SPL at the end of the image, since the reset vector 1372# is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target 1373# and need to introduce a new build target with the full blown U-Boot 1374# at the start padded up to the start of the SPL image. And then concat 1375# the SPL image to the end. 1376 1377OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \ 1378 --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff 1379u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE 1380 $(call if_changed,pad_cat) 1381 1382# Create a new ELF from a raw binary file. 1383ifndef PLATFORM_ELFENTRY 1384 PLATFORM_ELFENTRY = "_start" 1385endif 1386quiet_cmd_u-boot-elf ?= LD $@ 1387 cmd_u-boot-elf ?= $(LD) u-boot-elf.o -o $@ \ 1388 --defsym=$(PLATFORM_ELFENTRY)=$(CONFIG_SYS_TEXT_BASE) \ 1389 -Ttext=$(CONFIG_SYS_TEXT_BASE) 1390u-boot.elf: u-boot.bin 1391 $(Q)$(OBJCOPY) -I binary $(PLATFORM_ELFFLAGS) $< u-boot-elf.o 1392 $(call if_changed,u-boot-elf) 1393 1394# MediaTek's ARM-based u-boot needs a header to contains its load address 1395# which is parsed by the BootROM. 1396# If the SPL build is enabled, the header will be added to the spl binary, 1397# and the spl binary and the u-boot.img will be combined into one file. 1398# Otherwise the header will be added to the u-boot.bin directly. 1399 1400ifeq ($(CONFIG_SPL),y) 1401spl/u-boot-spl-mtk.bin: spl/u-boot-spl 1402 1403u-boot-mtk.bin: u-boot.dtb u-boot.img spl/u-boot-spl-mtk.bin FORCE 1404 $(call if_changed,binman) 1405else 1406MKIMAGEFLAGS_u-boot-mtk.bin = -T mtk_image \ 1407 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \ 1408 -n "$(patsubst "%",%,$(CONFIG_MTK_BROM_HEADER_INFO))" 1409 1410u-boot-mtk.bin: u-boot.bin FORCE 1411 $(call if_changed,mkimage) 1412endif 1413 1414ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(ARCH)/Makefile.postlink) 1415 1416# Rule to link u-boot 1417# May be overridden by arch/$(ARCH)/config.mk 1418quiet_cmd_u-boot__ ?= LD $@ 1419 cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \ 1420 -T u-boot.lds $(u-boot-init) \ 1421 --start-group $(u-boot-main) --end-group \ 1422 $(PLATFORM_LIBS) -Map u-boot.map; \ 1423 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) 1424 1425quiet_cmd_smap = GEN common/system_map.o 1426cmd_smap = \ 1427 smap=`$(call SYSTEM_MAP,u-boot) | \ 1428 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \ 1429 $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \ 1430 -c $(srctree)/common/system_map.c -o common/system_map.o 1431 1432u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds FORCE 1433 +$(call if_changed,u-boot__) 1434ifeq ($(CONFIG_KALLSYMS),y) 1435 $(call cmd,smap) 1436 $(call cmd,u-boot__) common/system_map.o 1437endif 1438 1439ifeq ($(CONFIG_RISCV),y) 1440 @tools/prelink-riscv $@ 0 1441endif 1442 1443quiet_cmd_sym ?= SYM $@ 1444 cmd_sym ?= $(OBJDUMP) -t $< > $@ 1445u-boot.sym: u-boot FORCE 1446 $(call if_changed,sym) 1447 1448# The actual objects are generated when descending, 1449# make sure no implicit rule kicks in 1450$(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ; 1451 1452# Handle descending into subdirectories listed in $(vmlinux-dirs) 1453# Preset locale variables to speed up the build process. Limit locale 1454# tweaks to this spot to avoid wrong language settings when running 1455# make menuconfig etc. 1456# Error messages still appears in the original language 1457 1458PHONY += $(u-boot-dirs) 1459$(u-boot-dirs): prepare scripts 1460 $(Q)$(MAKE) $(build)=$@ 1461 1462tools: prepare 1463# The "tools" are needed early 1464$(filter-out tools, $(u-boot-dirs)): tools 1465# The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC 1466# is "yes"), so compile examples after U-Boot is compiled. 1467examples: $(filter-out examples, $(u-boot-dirs)) 1468 1469define filechk_uboot.release 1470 echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1471endef 1472 1473# Store (new) UBOOTRELEASE string in include/config/uboot.release 1474include/config/uboot.release: include/config/auto.conf FORCE 1475 $(call filechk,uboot.release) 1476 1477 1478# Things we need to do before we recursively start building the kernel 1479# or the modules are listed in "prepare". 1480# A multi level approach is used. prepareN is processed before prepareN-1. 1481# archprepare is used in arch Makefiles and when processed asm symlink, 1482# version.h and scripts_basic is processed / created. 1483 1484# Listed in dependency order 1485PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 1486 1487# prepare3 is used to check if we are building in a separate output directory, 1488# and if so do: 1489# 1) Check that make has not been executed in the kernel src $(srctree) 1490prepare3: include/config/uboot.release 1491ifneq ($(KBUILD_SRC),) 1492 @$(kecho) ' Using $(srctree) as source for U-Boot' 1493 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ 1494 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ 1495 echo >&2 " in the '$(srctree)' directory.";\ 1496 /bin/false; \ 1497 fi; 1498endif 1499 1500# prepare2 creates a makefile if using a separate output directory 1501prepare2: prepare3 outputmakefile 1502 1503prepare1: prepare2 $(version_h) $(timestamp_h) \ 1504 include/config/auto.conf 1505ifeq ($(wildcard $(LDSCRIPT)),) 1506 @echo >&2 " Could not find linker script." 1507 @/bin/false 1508endif 1509 1510ifeq ($(CONFIG_USE_DEFAULT_ENV_FILE),y) 1511prepare1: $(defaultenv_h) 1512endif 1513 1514archprepare: prepare1 scripts_basic 1515 1516prepare0: archprepare FORCE 1517 $(Q)$(MAKE) $(build)=. 1518 1519# All the preparing.. 1520prepare: prepare0 1521 1522# Generate some files 1523# --------------------------------------------------------------------------- 1524 1525define filechk_version.h 1526 (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \ 1527 echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \ 1528 echo \#define CC_VERSION_STRING \"$$(LC_ALL=C $(CC) --version | head -n 1)\"; \ 1529 echo \#define LD_VERSION_STRING \"$$(LC_ALL=C $(LD) --version | head -n 1)\"; ) 1530endef 1531 1532# The SOURCE_DATE_EPOCH mechanism requires a date that behaves like GNU date. 1533# The BSD date on the other hand behaves different and would produce errors 1534# with the misused '-d' switch. Respect that and search a working date with 1535# well known pre- and suffixes for the GNU variant of date. 1536define filechk_timestamp.h 1537 (if test -n "$${SOURCE_DATE_EPOCH}"; then \ 1538 SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \ 1539 DATE=""; \ 1540 for date in gdate date.gnu date; do \ 1541 $${date} -u -d "$${SOURCE_DATE}" >/dev/null 2>&1 && DATE="$${date}"; \ 1542 done; \ 1543 if test -n "$${DATE}"; then \ 1544 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DATE "%b %d %C%y"'; \ 1545 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TIME "%T"'; \ 1546 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TZ "%z"'; \ 1547 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \ 1548 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \ 1549 else \ 1550 return 42; \ 1551 fi; \ 1552 else \ 1553 LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \ 1554 LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \ 1555 LC_ALL=C date +'#define U_BOOT_TZ "%z"'; \ 1556 LC_ALL=C date +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \ 1557 LC_ALL=C date +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \ 1558 fi) 1559endef 1560 1561define filechk_defaultenv.h 1562 (grep -v '^#' | \ 1563 grep -v '^$$' | \ 1564 tr '\n' '\0' | \ 1565 sed -e 's/\\\x0/\n/' | \ 1566 xxd -i ; echo ", 0x00" ; ) 1567endef 1568 1569$(version_h): include/config/uboot.release FORCE 1570 $(call filechk,version.h) 1571 1572$(timestamp_h): $(srctree)/Makefile FORCE 1573 $(call filechk,timestamp.h) 1574 1575$(defaultenv_h): $(CONFIG_DEFAULT_ENV_FILE:"%"=%) FORCE 1576 $(call filechk,defaultenv.h) 1577 1578# --------------------------------------------------------------------------- 1579quiet_cmd_cpp_lds = LDS $@ 1580cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) \ 1581 -D__ASSEMBLY__ -x assembler-with-cpp -std=c99 -P -o $@ $< 1582 1583u-boot.lds: $(LDSCRIPT) prepare FORCE 1584 $(call if_changed_dep,cpp_lds) 1585 1586spl/u-boot-spl.bin: spl/u-boot-spl 1587 @: 1588spl/u-boot-spl: tools prepare \ 1589 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb) \ 1590 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_TPL_OF_PLATDATA),dts/dt.dtb) 1591 $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all 1592 1593spl/sunxi-spl.bin: spl/u-boot-spl 1594 @: 1595 1596spl/sunxi-spl-with-ecc.bin: spl/sunxi-spl.bin 1597 @: 1598 1599spl/u-boot-spl.sfp: spl/u-boot-spl 1600 @: 1601 1602spl/boot.bin: spl/u-boot-spl 1603 @: 1604 1605tpl/u-boot-tpl.bin: tools prepare \ 1606 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb) 1607 $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all 1608 1609TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include) 1610 1611FIND := find 1612FINDFLAGS := -L 1613 1614tags ctags: 1615 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \ 1616 -name '*.[chS]' -print` 1617 ln -s ctags tags 1618 1619etags: 1620 etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \ 1621 -name '*.[chS]' -print` 1622cscope: 1623 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \ 1624 cscope.files 1625 cscope -b -q -k 1626 1627SYSTEM_MAP = \ 1628 $(NM) $1 | \ 1629 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \ 1630 LC_ALL=C sort 1631System.map: u-boot 1632 @$(call SYSTEM_MAP,$<) > $@ 1633 1634######################################################################### 1635 1636# ARM relocations should all be R_ARM_RELATIVE (32-bit) or 1637# R_AARCH64_RELATIVE (64-bit). 1638checkarmreloc: u-boot 1639 @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \ 1640 grep R_A | sort -u`"; \ 1641 if test "$$RELOC" != "R_ARM_RELATIVE" -a \ 1642 "$$RELOC" != "R_AARCH64_RELATIVE"; then \ 1643 echo "$< contains unexpected relocations: $$RELOC"; \ 1644 false; \ 1645 fi 1646 1647envtools: scripts_basic $(version_h) $(timestamp_h) 1648 $(Q)$(MAKE) $(build)=tools/env 1649 1650tools-only: scripts_basic $(version_h) $(timestamp_h) 1651 $(Q)$(MAKE) $(build)=tools 1652 1653tools-all: export HOST_TOOLS_ALL=y 1654tools-all: envtools tools ; 1655 1656cross_tools: export CROSS_BUILD_TOOLS=y 1657cross_tools: tools ; 1658 1659.PHONY : CHANGELOG 1660CHANGELOG: 1661 git log --no-merges U-Boot-1_1_5.. | \ 1662 unexpand -a | sed -e 's/\s\s*$$//' > $@ 1663 1664######################################################################### 1665 1666### 1667# Cleaning is done on three levels. 1668# make clean Delete most generated files 1669# Leave enough to build external modules 1670# make mrproper Delete the current configuration, and all generated files 1671# make distclean Remove editor backup files, patch leftover files and the like 1672 1673# Directories & files removed with 'make clean' 1674CLEAN_DIRS += $(MODVERDIR) \ 1675 $(foreach d, spl tpl, $(patsubst %,$d/%, \ 1676 $(filter-out include, $(shell ls -1 $d 2>/dev/null)))) 1677 1678CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h \ 1679 boot* u-boot* MLO* SPL System.map fit-dtb.blob 1680 1681# Directories & files removed with 'make mrproper' 1682MRPROPER_DIRS += include/config include/generated spl tpl \ 1683 .tmp_objdiff 1684MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \ 1685 ctags etags tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS 1686 1687# clean - Delete most, but leave enough to build external modules 1688# 1689clean: rm-dirs := $(CLEAN_DIRS) 1690clean: rm-files := $(CLEAN_FILES) 1691 1692clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f)) 1693 1694clean-dirs := $(addprefix _clean_, $(clean-dirs)) 1695 1696PHONY += $(clean-dirs) clean archclean 1697$(clean-dirs): 1698 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1699 1700clean: $(clean-dirs) 1701 $(call cmd,rmdirs) 1702 $(call cmd,rmfiles) 1703 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1704 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1705 -o -name '*.ko.*' -o -name '*.su' \ 1706 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1707 -o -name '*.lex.c' -o -name '*.tab.[ch]' \ 1708 -o -name '*.symtypes' -o -name 'modules.order' \ 1709 -o -name modules.builtin -o -name '.tmp_*.o.*' \ 1710 -o -name 'dsdt.aml' -o -name 'dsdt.asl.tmp' -o -name 'dsdt.c' \ 1711 -o -name '*.efi' -o -name '*.gcno' -o -name '*.so' \) \ 1712 -type f -print | xargs rm -f 1713 1714# mrproper - Delete all generated files, including .config 1715# 1716mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 1717mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1718mrproper-dirs := $(addprefix _mrproper_,scripts) 1719 1720PHONY += $(mrproper-dirs) mrproper archmrproper 1721$(mrproper-dirs): 1722 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1723 1724mrproper: clean $(mrproper-dirs) 1725 $(call cmd,rmdirs) 1726 $(call cmd,rmfiles) 1727 @rm -f arch/*/include/asm/arch 1728 1729# distclean 1730# 1731PHONY += distclean 1732 1733distclean: mrproper 1734 @find $(srctree) $(RCS_FIND_IGNORE) \ 1735 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1736 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 1737 -o -name '.*.rej' -o -name '*%' -o -name 'core' \ 1738 -o -name '*.pyc' \) \ 1739 -type f -print | xargs rm -f 1740 @rm -f boards.cfg 1741 1742backup: 1743 F=`basename $(srctree)` ; cd .. ; \ 1744 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F 1745 1746help: 1747 @echo 'Cleaning targets:' 1748 @echo ' clean - Remove most generated files but keep the config' 1749 @echo ' mrproper - Remove all generated files + config + various backup files' 1750 @echo ' distclean - mrproper + remove editor backup and patch files' 1751 @echo '' 1752 @echo 'Configuration targets:' 1753 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1754 @echo '' 1755 @echo 'Test targets:' 1756 @echo '' 1757 @echo ' check - Run all automated tests that use sandbox' 1758 @echo ' qcheck - Run quick automated tests that use sandbox' 1759 @echo '' 1760 @echo 'Other generic targets:' 1761 @echo ' all - Build all necessary images depending on configuration' 1762 @echo ' tests - Build U-Boot for sandbox and run tests' 1763 @echo '* u-boot - Build the bare u-boot' 1764 @echo ' dir/ - Build all files in dir and below' 1765 @echo ' dir/file.[oisS] - Build specified target only' 1766 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1767 @echo ' (requires a recent binutils and recent build (System.map))' 1768 @echo ' tags/ctags - Generate ctags file for editors' 1769 @echo ' etags - Generate etags file for editors' 1770 @echo ' cscope - Generate cscope index' 1771 @echo ' ubootrelease - Output the release version string (use with make -s)' 1772 @echo ' ubootversion - Output the version stored in Makefile (use with make -s)' 1773 @echo " cfg - Don't build, just create the .cfg files" 1774 @echo " envtools - Build only the target-side environment tools" 1775 @echo '' 1776 @echo 'Static analysers' 1777 @echo ' checkstack - Generate a list of stack hogs' 1778 @echo ' coccicheck - Execute static code analysis with Coccinelle' 1779 @echo '' 1780 @echo 'Documentation targets:' 1781 @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp 1782 @echo '' 1783 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1784 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1785 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1786 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 1787 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1788 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1789 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' 1790 @echo ' 1: warnings which may be relevant and do not occur too often' 1791 @echo ' 2: warnings which occur quite often but may still be relevant' 1792 @echo ' 3: more obscure warnings, can most likely be ignored' 1793 @echo ' Multiple levels can be combined with W=12 or W=123' 1794 @echo '' 1795 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1796 @echo 'For further info see the ./README file' 1797 1798tests check: 1799 $(srctree)/test/run 1800 1801qcheck: 1802 $(srctree)/test/run quick 1803 1804# Documentation targets 1805# --------------------------------------------------------------------------- 1806DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \ 1807 linkcheckdocs dochelp refcheckdocs 1808PHONY += $(DOC_TARGETS) 1809$(DOC_TARGETS): scripts_basic FORCE 1810 $(Q)$(MAKE) $(build)=Documentation $@ 1811 1812endif #ifeq ($(config-targets),1) 1813endif #ifeq ($(mixed-targets),1) 1814 1815PHONY += checkstack ubootrelease ubootversion 1816 1817checkstack: 1818 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \ 1819 $(PERL) $(src)/scripts/checkstack.pl $(ARCH) 1820 1821ubootrelease: 1822 @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1823 1824ubootversion: 1825 @echo $(UBOOTVERSION) 1826 1827# Single targets 1828# --------------------------------------------------------------------------- 1829# Single targets are compatible with: 1830# - build with mixed source and output 1831# - build with separate output dir 'make O=...' 1832# - external modules 1833# 1834# target-dir => where to store outputfile 1835# build-dir => directory in kernel source tree to use 1836 1837ifeq ($(KBUILD_EXTMOD),) 1838 build-dir = $(patsubst %/,%,$(dir $@)) 1839 target-dir = $(dir $@) 1840else 1841 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) 1842 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) 1843 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) 1844endif 1845 1846%.s: %.c prepare scripts FORCE 1847 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1848%.i: %.c prepare scripts FORCE 1849 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1850%.o: %.c prepare scripts FORCE 1851 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1852%.lst: %.c prepare scripts FORCE 1853 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1854%.s: %.S prepare scripts FORCE 1855 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1856%.o: %.S prepare scripts FORCE 1857 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1858%.symtypes: %.c prepare scripts FORCE 1859 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1860 1861# Modules 1862/: prepare scripts FORCE 1863 $(cmd_crmodverdir) 1864 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1865 $(build)=$(build-dir) 1866%/: prepare scripts FORCE 1867 $(cmd_crmodverdir) 1868 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1869 $(build)=$(build-dir) 1870%.ko: prepare scripts FORCE 1871 $(cmd_crmodverdir) 1872 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1873 $(build)=$(build-dir) $(@:.ko=.o) 1874 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1875 1876# Consistency checks 1877# --------------------------------------------------------------------------- 1878 1879PHONY += coccicheck 1880 1881coccicheck: 1882 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ 1883 1884# FIXME Should go into a make.lib or something 1885# =========================================================================== 1886 1887quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 1888 cmd_rmdirs = rm -rf $(rm-dirs) 1889 1890quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 1891 cmd_rmfiles = rm -f $(rm-files) 1892 1893# read all saved command lines 1894 1895targets := $(wildcard $(sort $(targets))) 1896cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 1897 1898ifneq ($(cmd_files),) 1899 $(cmd_files): ; # Do not try to update included dependency files 1900 include $(cmd_files) 1901endif 1902 1903endif # skip-makefile 1904 1905PHONY += FORCE 1906FORCE: 1907 1908# Declare the contents of the .PHONY variable as phony. We keep that 1909# information in a variable so we can use it in if_changed and friends. 1910.PHONY: $(PHONY) 1911