1# SPDX-License-Identifier: GPL-2.0+ 2 3VERSION = 2019 4PATCHLEVEL = 01 5SUBLEVEL = 6EXTRAVERSION = -rc3 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-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/ 695libs-y += drivers/mtd/spi/ 696libs-y += drivers/net/ 697libs-y += drivers/net/phy/ 698libs-y += drivers/power/ \ 699 drivers/power/domain/ \ 700 drivers/power/fuel_gauge/ \ 701 drivers/power/mfd/ \ 702 drivers/power/pmic/ \ 703 drivers/power/battery/ \ 704 drivers/power/regulator/ 705libs-y += drivers/spi/ 706libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/ 707libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/ 708libs-$(CONFIG_SYS_FSL_MMDC) += drivers/ddr/fsl/ 709libs-$(CONFIG_ALTERA_SDRAM) += drivers/ddr/altera/ 710libs-y += drivers/serial/ 711libs-y += drivers/usb/dwc3/ 712libs-y += drivers/usb/common/ 713libs-y += drivers/usb/emul/ 714libs-y += drivers/usb/eth/ 715libs-y += drivers/usb/gadget/ 716libs-y += drivers/usb/gadget/udc/ 717libs-y += drivers/usb/host/ 718libs-y += drivers/usb/musb/ 719libs-y += drivers/usb/musb-new/ 720libs-y += drivers/usb/phy/ 721libs-y += drivers/usb/ulpi/ 722libs-y += cmd/ 723libs-y += common/ 724libs-y += env/ 725libs-$(CONFIG_API) += api/ 726libs-$(CONFIG_HAS_POST) += post/ 727libs-$(CONFIG_UNIT_TEST) += test/ test/dm/ 728libs-$(CONFIG_UT_ENV) += test/env/ 729libs-$(CONFIG_UT_OVERLAY) += test/overlay/ 730 731libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/) 732 733libs-y := $(sort $(libs-y)) 734 735u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples 736 737u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-)))) 738 739libs-y := $(patsubst %/, %/built-in.o, $(libs-y)) 740 741u-boot-init := $(head-y) 742u-boot-main := $(libs-y) 743 744 745# Add GCC lib 746ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y) 747PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a 748else 749PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc 750endif 751PLATFORM_LIBS += $(PLATFORM_LIBGCC) 752 753ifdef CONFIG_CC_COVERAGE 754KBUILD_CFLAGS += --coverage 755PLATFORM_LIBGCC += -lgcov 756endif 757 758export PLATFORM_LIBS 759export PLATFORM_LIBGCC 760 761# Special flags for CPP when processing the linker script. 762# Pass the version down so we can handle backwards compatibility 763# on the fly. 764LDPPFLAGS += \ 765 -include $(srctree)/include/u-boot/u-boot.lds.h \ 766 -DCPUDIR=$(CPUDIR) \ 767 $(shell $(LD) --version | \ 768 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p') 769 770######################################################################### 771######################################################################### 772 773ifneq ($(CONFIG_BOARD_SIZE_LIMIT),) 774BOARD_SIZE_CHECK = \ 775 @actual=`wc -c $@ | awk '{print $$1}'`; \ 776 limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \ 777 if test $$actual -gt $$limit; then \ 778 echo "$@ exceeds file size limit:" >&2 ; \ 779 echo " limit: $$limit bytes" >&2 ; \ 780 echo " actual: $$actual bytes" >&2 ; \ 781 echo " excess: $$((actual - limit)) bytes" >&2; \ 782 exit 1; \ 783 fi 784else 785BOARD_SIZE_CHECK = 786endif 787 788# Statically apply RELA-style relocations (currently arm64 only) 789# This is useful for arm64 where static relocation needs to be performed on 790# the raw binary, but certain simulators only accept an ELF file (but don't 791# do the relocation). 792ifneq ($(CONFIG_STATIC_RELA),) 793# $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base 794DO_STATIC_RELA = \ 795 start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \ 796 end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \ 797 tools/relocate-rela $(2) $(3) $$start $$end 798else 799DO_STATIC_RELA = 800endif 801 802# Always append ALL so that arch config.mk's can add custom ones 803ALL-y += u-boot.srec u-boot.bin u-boot.sym System.map binary_size_check 804 805ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin 806ifeq ($(CONFIG_SPL_FSL_PBL),y) 807ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin 808else 809ifneq ($(CONFIG_SECURE_BOOT), y) 810# For Secure Boot The Image needs to be signed and Header must also 811# be included. So The image has to be built explicitly 812ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl 813endif 814endif 815ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin 816ifeq ($(CONFIG_MX6)$(CONFIG_SECURE_BOOT), yy) 817ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img 818else 819ifeq ($(CONFIG_MX7)$(CONFIG_SECURE_BOOT), yy) 820ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img 821else 822ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img 823endif 824endif 825ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin 826ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb 827ifeq ($(CONFIG_SPL_FRAMEWORK),y) 828ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img 829endif 830ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb 831ifneq ($(CONFIG_SPL_TARGET),) 832ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%) 833endif 834ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf 835ALL-$(CONFIG_EFI_APP) += u-boot-app.efi 836ALL-$(CONFIG_EFI_STUB) += u-boot-payload.efi 837 838ifneq ($(BUILD_ROM)$(CONFIG_BUILD_ROM),) 839ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom 840endif 841 842# Build a combined spl + u-boot image for sunxi 843ifeq ($(CONFIG_ARCH_SUNXI)$(CONFIG_SPL),yy) 844ALL-y += u-boot-sunxi-with-spl.bin 845endif 846 847# enable combined SPL/u-boot/dtb rules for tegra 848ifeq ($(CONFIG_TEGRA)$(CONFIG_SPL),yy) 849ALL-y += u-boot-tegra.bin u-boot-nodtb-tegra.bin 850ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb-tegra.bin 851endif 852 853ALL-$(CONFIG_ARCH_MEDIATEK) += u-boot-mtk.bin 854 855# Add optional build target if defined in board/cpu/soc headers 856ifneq ($(CONFIG_BUILD_TARGET),) 857ALL-y += $(CONFIG_BUILD_TARGET:"%"=%) 858endif 859 860ifneq ($(CONFIG_SYS_INIT_SP_BSS_OFFSET),) 861ALL-y += init_sp_bss_offset_check 862endif 863 864ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy) 865ALL-y += u-boot-with-dtb.bin 866endif 867 868LDFLAGS_u-boot += $(LDFLAGS_FINAL) 869 870# Avoid 'Not enough room for program headers' error on binutils 2.28 onwards. 871LDFLAGS_u-boot += $(call ld-option, --no-dynamic-linker) 872 873ifeq ($(CONFIG_ARC)$(CONFIG_NIOS2)$(CONFIG_X86)$(CONFIG_XTENSA),) 874LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE) 875endif 876 877# Normally we fill empty space with 0xff 878quiet_cmd_objcopy = OBJCOPY $@ 879cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \ 880 $(OBJCOPYFLAGS_$(@F)) $< $@ 881 882# Provide a version which does not do this, for use by EFI 883quiet_cmd_zobjcopy = OBJCOPY $@ 884cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ 885 886quiet_cmd_efipayload = OBJCOPY $@ 887cmd_efipayload = $(OBJCOPY) -I binary -O $(EFIPAYLOAD_BFDTARGET) -B $(EFIPAYLOAD_BFDARCH) $< $@ 888 889MKIMAGEOUTPUT ?= /dev/null 890 891quiet_cmd_mkimage = MKIMAGE $@ 892cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \ 893 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT)) 894 895quiet_cmd_mkfitimage = MKIMAGE $@ 896cmd_mkfitimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -f $(U_BOOT_ITS) -E $@ -p $(CONFIG_FIT_EXTERNAL_OFFSET)\ 897 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT)) 898 899quiet_cmd_cat = CAT $@ 900cmd_cat = cat $(filter-out $(PHONY), $^) > $@ 901 902append = cat $(filter-out $< $(PHONY), $^) >> $@ 903 904quiet_cmd_pad_cat = CAT $@ 905cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@ 906 907cfg: u-boot.cfg 908 909quiet_cmd_cfgcheck = CFGCHK $2 910cmd_cfgcheck = $(srctree)/scripts/check-config.sh $2 \ 911 $(srctree)/scripts/config_whitelist.txt $(srctree) 912 913all: $(ALL-y) cfg 914ifeq ($(CONFIG_DM_I2C_COMPAT)$(CONFIG_SANDBOX),y) 915 @echo >&2 "===================== WARNING ======================" 916 @echo >&2 "This board uses CONFIG_DM_I2C_COMPAT. Please remove" 917 @echo >&2 "(possibly in a subsequent patch in your series)" 918 @echo >&2 "before sending patches to the mailing list." 919 @echo >&2 "====================================================" 920endif 921ifeq ($(CONFIG_MMC),y) 922ifneq ($(CONFIG_DM_MMC)$(CONFIG_OF_CONTROL)$(CONFIG_BLK),yyy) 923 @echo >&2 "===================== WARNING ======================" 924 @echo >&2 "This board does not use CONFIG_DM_MMC. Please update" 925 @echo >&2 "the board to use CONFIG_DM_MMC before the v2019.04 release." 926 @echo >&2 "Failure to update by the deadline may result in board removal." 927 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info." 928 @echo >&2 "====================================================" 929endif 930endif 931ifeq ($(CONFIG_USB),y) 932ifneq ($(CONFIG_DM_USB)$(CONFIG_OF_CONTROL)$(CONFIG_BLK),yyy) 933 @echo >&2 "===================== WARNING ======================" 934 @echo >&2 "This board does not use CONFIG_DM_USB. Please update" 935 @echo >&2 "the board to use CONFIG_DM_USB before the v2019.07 release." 936 @echo >&2 "Failure to update by the deadline may result in board removal." 937 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info." 938 @echo >&2 "====================================================" 939endif 940endif 941ifeq ($(CONFIG_LIBATA)$(CONFIG_MVSATA_IDE),y) 942ifneq ($(CONFIG_DM_SCSI),y) 943 @echo >&2 "===================== WARNING ======================" 944 @echo >&2 "This board does not use CONFIG_DM_SCSI. Please update" 945 @echo >&2 "the storage controller to use CONFIG_DM_SCSI before the v2019.07 release." 946 @echo >&2 "Failure to update by the deadline may result in board removal." 947 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info." 948 @echo >&2 "====================================================" 949endif 950endif 951ifeq ($(CONFIG_PCI),y) 952ifneq ($(CONFIG_DM_PCI),y) 953 @echo >&2 "===================== WARNING ======================" 954 @echo >&2 "This board does not use CONFIG_DM_PCI Please update" 955 @echo >&2 "the board to use CONFIG_DM_PCI before the v2019.07 release." 956 @echo >&2 "Failure to update by the deadline may result in board removal." 957 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info." 958 @echo >&2 "====================================================" 959endif 960endif 961ifeq ($(CONFIG_OF_EMBED),y) 962 @echo >&2 "===================== WARNING ======================" 963 @echo >&2 "CONFIG_OF_EMBED is enabled. This option should only" 964 @echo >&2 "be used for debugging purposes. Please use" 965 @echo >&2 "CONFIG_OF_SEPARATE for boards in mainline." 966 @echo >&2 "See doc/README.fdt-control for more info." 967 @echo >&2 "====================================================" 968endif 969ifeq ($(CONFIG_SPI),y) 970ifneq ($(CONFIG_DM_SPI)$(CONFIG_OF_CONTROL),yy) 971 @echo >&2 "===================== WARNING ======================" 972 @echo >&2 "This board does not use CONFIG_DM_SPI. Please update" 973 @echo >&2 "the board before v2019.04 for no dm conversion" 974 @echo >&2 "and v2019.07 for partially dm converted drivers." 975 @echo >&2 "Failure to update can lead to driver/board removal" 976 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info." 977 @echo >&2 "====================================================" 978endif 979endif 980ifeq ($(CONFIG_SPI_FLASH),y) 981ifneq ($(CONFIG_DM_SPI_FLASH)$(CONFIG_OF_CONTROL),yy) 982 @echo >&2 "===================== WARNING ======================" 983 @echo >&2 "This board does not use CONFIG_DM_SPI_FLASH. Please update" 984 @echo >&2 "the board to use CONFIG_SPI_FLASH before the v2019.07 release." 985 @echo >&2 "Failure to update by the deadline may result in board removal." 986 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info." 987 @echo >&2 "====================================================" 988endif 989endif 990 @# Check that this build does not use CONFIG options that we do not 991 @# know about unless they are in Kconfig. All the existing CONFIG 992 @# options are whitelisted, so new ones should not be added. 993 $(call cmd,cfgcheck,u-boot.cfg) 994 995PHONY += dtbs 996dtbs: dts/dt.dtb 997 @: 998dts/dt.dtb: u-boot 999 $(Q)$(MAKE) $(build)=dts dtbs 1000 1001quiet_cmd_copy = COPY $@ 1002 cmd_copy = cp $< $@ 1003 1004ifeq ($(CONFIG_MULTI_DTB_FIT),y) 1005 1006fit-dtb.blob: dts/dt.dtb FORCE 1007 $(call if_changed,mkimage) 1008 1009MKIMAGEFLAGS_fit-dtb.blob = -f auto -A $(ARCH) -T firmware -C none -O u-boot \ 1010 -a 0 -e 0 -E \ 1011 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) -d /dev/null 1012 1013u-boot-fit-dtb.bin: u-boot-nodtb.bin fit-dtb.blob 1014 $(call if_changed,cat) 1015 1016u-boot.bin: u-boot-fit-dtb.bin FORCE 1017 $(call if_changed,copy) 1018else ifeq ($(CONFIG_OF_SEPARATE),y) 1019u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE 1020 $(call if_changed,cat) 1021 1022u-boot.bin: u-boot-dtb.bin FORCE 1023 $(call if_changed,copy) 1024else 1025u-boot.bin: u-boot-nodtb.bin FORCE 1026 $(call if_changed,copy) 1027endif 1028 1029%.imx: %.bin 1030 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 1031 1032%.vyb: %.imx 1033 $(Q)$(MAKE) $(build)=arch/arm/cpu/armv7/vf610 $@ 1034 1035quiet_cmd_copy = COPY $@ 1036 cmd_copy = cp $< $@ 1037 1038u-boot.dtb: dts/dt.dtb 1039 $(call cmd,copy) 1040 1041OBJCOPYFLAGS_u-boot.hex := -O ihex 1042 1043OBJCOPYFLAGS_u-boot.srec := -O srec 1044 1045u-boot.hex u-boot.srec: u-boot FORCE 1046 $(call if_changed,objcopy) 1047 1048OBJCOPYFLAGS_u-boot-elf.srec := $(OBJCOPYFLAGS_u-boot.srec) 1049 1050u-boot-elf.srec: u-boot.elf FORCE 1051 $(call if_changed,objcopy) 1052 1053OBJCOPYFLAGS_u-boot-spl.srec = $(OBJCOPYFLAGS_u-boot.srec) 1054 1055spl/u-boot-spl.srec: spl/u-boot-spl FORCE 1056 $(call if_changed,objcopy) 1057 1058OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \ 1059 $(if $(CONFIG_X86_16BIT_INIT),-R .start16 -R .resetvec) \ 1060 $(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR),-R .bootpg -R .resetvec) 1061 1062OBJCOPYFLAGS_u-boot-spl.hex = $(OBJCOPYFLAGS_u-boot.hex) 1063 1064spl/u-boot-spl.hex: spl/u-boot-spl FORCE 1065 $(call if_changed,objcopy) 1066 1067binary_size_check: u-boot-nodtb.bin FORCE 1068 @file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \ 1069 map_size=$(shell cat u-boot.map | \ 1070 awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \ 1071 | sed 's/0X//g' \ 1072 | bc); \ 1073 if [ "" != "$$map_size" ]; then \ 1074 if test $$map_size -ne $$file_size; then \ 1075 echo "u-boot.map shows a binary size of $$map_size" >&2 ; \ 1076 echo " but u-boot-nodtb.bin shows $$file_size" >&2 ; \ 1077 exit 1; \ 1078 fi \ 1079 fi 1080 1081ifneq ($(CONFIG_SYS_INIT_SP_BSS_OFFSET),) 1082ifneq ($(CONFIG_SYS_MALLOC_F_LEN),) 1083subtract_sys_malloc_f_len = space=$$(($${space} - $(CONFIG_SYS_MALLOC_F_LEN))) 1084else 1085subtract_sys_malloc_f_len = true 1086endif 1087# The 1/4 margin below is somewhat arbitrary. The likely initial SP usage is 1088# so low that the DTB could probably use 90%+ of the available space, for 1089# current values of CONFIG_SYS_INIT_SP_BSS_OFFSET at least. However, let's be 1090# safe for now and tweak this later if space becomes tight. 1091# A rejected alternative would be to check that some absolute minimum stack 1092# space was available. However, since CONFIG_SYS_INIT_SP_BSS_OFFSET is 1093# deliberately build-specific, to take account of build-to-build stack usage 1094# differences due to different feature sets, there is no common absolute value 1095# to check against. 1096init_sp_bss_offset_check: u-boot.dtb FORCE 1097 @dtb_size=$(shell wc -c u-boot.dtb | awk '{print $$1}') ; \ 1098 space=$(CONFIG_SYS_INIT_SP_BSS_OFFSET) ; \ 1099 $(subtract_sys_malloc_f_len) ; \ 1100 quarter_space=$$(($${space} / 4)) ; \ 1101 if [ $${dtb_size} -gt $${quarter_space} ]; then \ 1102 echo "u-boot.dtb is larger than 1 quarter of " >&2 ; \ 1103 echo "(CONFIG_SYS_INIT_SP_BSS_OFFSET - CONFIG_SYS_MALLOC_F_LEN)" >&2 ; \ 1104 exit 1 ; \ 1105 fi 1106endif 1107 1108u-boot-nodtb.bin: u-boot FORCE 1109 $(call if_changed,objcopy) 1110 $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE)) 1111 $(BOARD_SIZE_CHECK) 1112 1113u-boot.ldr: u-boot 1114 $(CREATE_LDR_ENV) 1115 $(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS) 1116 $(BOARD_SIZE_CHECK) 1117 1118# binman 1119# --------------------------------------------------------------------------- 1120# Use 'make BINMAN_DEBUG=1' to enable debugging 1121quiet_cmd_binman = BINMAN $@ 1122cmd_binman = $(srctree)/tools/binman/binman -u -d u-boot.dtb -O . -m \ 1123 -I . -I $(srctree) -I $(srctree)/board/$(BOARDDIR) \ 1124 $(if $(BINMAN_DEBUG),-D) $(BINMAN_$(@F)) $< 1125 1126OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex 1127 1128OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec 1129 1130u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE 1131 $(call if_changed,objcopy) 1132 1133# 1134# U-Boot entry point, needed for booting of full-blown U-Boot 1135# from the SPL U-Boot version. 1136# 1137ifndef CONFIG_SYS_UBOOT_START 1138CONFIG_SYS_UBOOT_START := 0 1139endif 1140 1141# Boards with more complex image requirments can provide an .its source file 1142# or a generator script 1143ifneq ($(CONFIG_SPL_FIT_SOURCE),"") 1144U_BOOT_ITS = $(subst ",,$(CONFIG_SPL_FIT_SOURCE)) 1145else 1146ifneq ($(CONFIG_SPL_FIT_GENERATOR),"") 1147U_BOOT_ITS := u-boot.its 1148ifeq ($(CONFIG_SPL_FIT_GENERATOR),"arch/arm/mach-rockchip/make_fit_atf.py") 1149U_BOOT_ITS_DEPS += u-boot 1150endif 1151$(U_BOOT_ITS): $(U_BOOT_ITS_DEPS) FORCE 1152 $(srctree)/$(CONFIG_SPL_FIT_GENERATOR) \ 1153 $(patsubst %,arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) > $@ 1154endif 1155endif 1156 1157ifdef CONFIG_SPL_LOAD_FIT 1158MKIMAGEFLAGS_u-boot.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \ 1159 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \ 1160 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \ 1161 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) 1162else 1163MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \ 1164 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \ 1165 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" 1166MKIMAGEFLAGS_u-boot-ivt.img = -A $(ARCH) -T firmware_ivt -C none -O u-boot \ 1167 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \ 1168 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" 1169u-boot-ivt.img: MKIMAGEOUTPUT = u-boot-ivt.img.log 1170CLEAN_FILES += u-boot-ivt.img.log u-boot-dtb.imx.log SPL.log u-boot.imx.log 1171endif 1172 1173MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img) 1174 1175MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \ 1176 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) 1177 1178MKIMAGEFLAGS_u-boot-spl.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \ 1179 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \ 1180 $(if $(KEYDIR),-k $(KEYDIR)) 1181 1182MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \ 1183 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage 1184 1185u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl u-boot-ivt.img: \ 1186 $(if $(CONFIG_SPL_LOAD_FIT),u-boot-nodtb.bin dts/dt.dtb,u-boot.bin) FORCE 1187 $(call if_changed,mkimage) 1188 1189u-boot.itb: u-boot-nodtb.bin dts/dt.dtb $(U_BOOT_ITS) FORCE 1190 $(call if_changed,mkfitimage) 1191 $(BOARD_SIZE_CHECK) 1192 1193u-boot-spl.kwb: u-boot.img spl/u-boot-spl.bin FORCE 1194 $(call if_changed,mkimage) 1195 1196u-boot.sha1: u-boot.bin 1197 tools/ubsha1 u-boot.bin 1198 1199u-boot.dis: u-boot 1200 $(OBJDUMP) -d $< > $@ 1201 1202ifneq ($(CONFIG_SPL_PAYLOAD),) 1203SPL_PAYLOAD := $(CONFIG_SPL_PAYLOAD:"%"=%) 1204else 1205SPL_PAYLOAD := u-boot.bin 1206endif 1207 1208OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \ 1209 --pad-to=$(CONFIG_SPL_PAD_TO) 1210u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE 1211 $(call if_changed,pad_cat) 1212 1213ifeq ($(CONFIG_ARCH_LPC32XX)$(CONFIG_SPL),yy) 1214MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE) 1215 1216lpc32xx-spl.img: spl/u-boot-spl.bin FORCE 1217 $(call if_changed,mkimage) 1218 1219OBJCOPYFLAGS_lpc32xx-boot-0.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) 1220 1221lpc32xx-boot-0.bin: lpc32xx-spl.img FORCE 1222 $(call if_changed,objcopy) 1223 1224OBJCOPYFLAGS_lpc32xx-boot-1.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) 1225 1226lpc32xx-boot-1.bin: lpc32xx-spl.img FORCE 1227 $(call if_changed,objcopy) 1228 1229lpc32xx-full.bin: lpc32xx-boot-0.bin lpc32xx-boot-1.bin u-boot.img FORCE 1230 $(call if_changed,cat) 1231 1232CLEAN_FILES += lpc32xx-* 1233endif 1234 1235OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \ 1236 --pad-to=$(CONFIG_TPL_PAD_TO) 1237tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE 1238 $(call if_changed,pad_cat) 1239 1240SPL: spl/u-boot-spl.bin FORCE 1241 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 1242 1243ifeq ($(CONFIG_ARCH_IMX8M), y) 1244flash.bin: spl/u-boot-spl.bin u-boot.itb FORCE 1245 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 1246endif 1247 1248u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE 1249 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 1250 1251MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE) 1252 1253u-boot.ubl: u-boot-with-spl.bin FORCE 1254 $(call if_changed,mkimage) 1255 1256MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \ 1257 $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \ 1258 -T aisimage -e $(CONFIG_SPL_TEXT_BASE) 1259spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE 1260 $(call if_changed,mkimage) 1261 1262OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) 1263u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE 1264 $(call if_changed,pad_cat) 1265 1266u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin 1267 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb 1268u-boot.sb: u-boot.bin spl/u-boot-spl.bin 1269 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb 1270 1271# On x600 (SPEAr600) U-Boot is appended to U-Boot SPL. 1272# Both images are created using mkimage (crc etc), so that the ROM 1273# bootloader can check its integrity. Padding needs to be done to the 1274# SPL image (with mkimage header) and not the binary. Otherwise the resulting image 1275# which is loaded/copied by the ROM bootloader to SRAM doesn't fit. 1276# The resulting image containing both U-Boot images is called u-boot.spr 1277MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \ 1278 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER 1279spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE 1280 $(call if_changed,mkimage) 1281 1282OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \ 1283 --gap-fill=0xff 1284u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE 1285 $(call if_changed,pad_cat) 1286 1287ifneq ($(CONFIG_ARCH_SOCFPGA),) 1288quiet_cmd_socboot = SOCBOOT $@ 1289cmd_socboot = cat spl/u-boot-spl.sfp spl/u-boot-spl.sfp \ 1290 spl/u-boot-spl.sfp spl/u-boot-spl.sfp \ 1291 u-boot.img > $@ || rm -f $@ 1292u-boot-with-spl.sfp: spl/u-boot-spl.sfp u-boot.img FORCE 1293 $(call if_changed,socboot) 1294endif 1295 1296ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy) 1297u-boot-with-dtb.bin: u-boot.bin u-boot.dtb \ 1298 $(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR), u-boot-br.bin) FORCE 1299 $(call if_changed,binman) 1300 1301ifeq ($(CONFIG_MPC85XX_HAVE_RESET_VECTOR),y) 1302OBJCOPYFLAGS_u-boot-br.bin := -O binary -j .bootpg -j .resetvec 1303u-boot-br.bin: u-boot FORCE 1304 $(call if_changed,objcopy) 1305endif 1306endif 1307 1308# x86 uses a large ROM. We fill it with 0xff, put the 16-bit stuff (including 1309# reset vector) at the top, Intel ME descriptor at the bottom, and U-Boot in 1310# the middle. This is handled by binman based on an image description in the 1311# board's device tree. 1312ifneq ($(CONFIG_X86_RESET_VECTOR),) 1313rom: u-boot.rom FORCE 1314 1315refcode.bin: $(srctree)/board/$(BOARDDIR)/refcode.bin FORCE 1316 $(call if_changed,copy) 1317 1318quiet_cmd_ldr = LD $@ 1319cmd_ldr = $(LD) $(LDFLAGS_$(@F)) \ 1320 $(filter-out FORCE,$^) -o $@ 1321 1322u-boot.rom: u-boot-x86-16bit.bin u-boot.bin \ 1323 $(if $(CONFIG_SPL_X86_16BIT_INIT),spl/u-boot-spl.bin) \ 1324 $(if $(CONFIG_HAVE_REFCODE),refcode.bin) FORCE 1325 $(call if_changed,binman) 1326 1327OBJCOPYFLAGS_u-boot-x86-16bit.bin := -O binary -j .start16 -j .resetvec 1328u-boot-x86-16bit.bin: u-boot FORCE 1329 $(call if_changed,objcopy) 1330endif 1331 1332ifneq ($(CONFIG_ARCH_SUNXI),) 1333ifeq ($(CONFIG_ARM64),) 1334u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img u-boot.dtb FORCE 1335 $(call if_changed,binman) 1336else 1337u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.itb FORCE 1338 $(call if_changed,cat) 1339endif 1340endif 1341 1342ifneq ($(CONFIG_TEGRA),) 1343ifneq ($(CONFIG_BINMAN),) 1344# Makes u-boot-dtb-tegra.bin u-boot-tegra.bin u-boot-nodtb-tegra.bin 1345%-dtb-tegra.bin %-tegra.bin %-nodtb-tegra.bin: \ 1346 spl/%-spl %.bin FORCE 1347 $(call if_changed,binman) 1348else 1349OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE) 1350u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot-nodtb.bin FORCE 1351 $(call if_changed,pad_cat) 1352 1353OBJCOPYFLAGS_u-boot-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE) 1354u-boot-tegra.bin: spl/u-boot-spl u-boot.bin FORCE 1355 $(call if_changed,pad_cat) 1356 1357u-boot-dtb-tegra.bin: u-boot-tegra.bin FORCE 1358 $(call if_changed,copy) 1359endif # binman 1360endif 1361 1362OBJCOPYFLAGS_u-boot-app.efi := $(OBJCOPYFLAGS_EFI) 1363u-boot-app.efi: u-boot FORCE 1364 $(call if_changed,zobjcopy) 1365 1366u-boot.bin.o: u-boot.bin FORCE 1367 $(call if_changed,efipayload) 1368 1369u-boot-payload.lds: $(LDSCRIPT_EFI) FORCE 1370 $(call if_changed_dep,cpp_lds) 1371 1372# Rule to link the EFI payload which contains a stub and a U-Boot binary 1373quiet_cmd_u-boot_payload ?= LD $@ 1374 cmd_u-boot_payload ?= $(LD) $(LDFLAGS_EFI_PAYLOAD) -o $@ \ 1375 -T u-boot-payload.lds arch/x86/cpu/call32.o \ 1376 lib/efi/efi.o lib/efi/efi_stub.o u-boot.bin.o \ 1377 $(addprefix arch/$(ARCH)/lib/,$(EFISTUB)) 1378 1379u-boot-payload: u-boot.bin.o u-boot-payload.lds FORCE 1380 $(call if_changed,u-boot_payload) 1381 1382OBJCOPYFLAGS_u-boot-payload.efi := $(OBJCOPYFLAGS_EFI) 1383u-boot-payload.efi: u-boot-payload FORCE 1384 $(call if_changed,zobjcopy) 1385 1386u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE 1387 $(call if_changed,cat) 1388 1389#Add a target to create boot binary having SPL binary in PBI format 1390#concatenated with u-boot binary. It is need by PowerPC SoC having 1391#internal SRAM <= 512KB. 1392MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \ 1393 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \ 1394 -A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE) 1395 1396spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE 1397 $(call if_changed,mkimage) 1398 1399ifeq ($(ARCH),arm) 1400UBOOT_BINLOAD := u-boot.img 1401else 1402ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy) 1403UBOOT_BINLOAD := u-boot-with-dtb.bin 1404else 1405UBOOT_BINLOAD := u-boot.bin 1406endif 1407endif 1408 1409OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \ 1410 --gap-fill=0xff 1411 1412u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE 1413 $(call if_changed,pad_cat) 1414 1415# PPC4xx needs the SPL at the end of the image, since the reset vector 1416# is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target 1417# and need to introduce a new build target with the full blown U-Boot 1418# at the start padded up to the start of the SPL image. And then concat 1419# the SPL image to the end. 1420 1421OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \ 1422 --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff 1423u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE 1424 $(call if_changed,pad_cat) 1425 1426# Create a new ELF from a raw binary file. 1427ifndef PLATFORM_ELFENTRY 1428 PLATFORM_ELFENTRY = "_start" 1429endif 1430quiet_cmd_u-boot-elf ?= LD $@ 1431 cmd_u-boot-elf ?= $(LD) u-boot-elf.o -o $@ \ 1432 --defsym=$(PLATFORM_ELFENTRY)=$(CONFIG_SYS_TEXT_BASE) \ 1433 -Ttext=$(CONFIG_SYS_TEXT_BASE) 1434u-boot.elf: u-boot.bin 1435 $(Q)$(OBJCOPY) -I binary $(PLATFORM_ELFFLAGS) $< u-boot-elf.o 1436 $(call if_changed,u-boot-elf) 1437 1438# MediaTek's ARM-based u-boot needs a header to contains its load address 1439# which is parsed by the BootROM. 1440# If the SPL build is enabled, the header will be added to the spl binary, 1441# and the spl binary and the u-boot.img will be combined into one file. 1442# Otherwise the header will be added to the u-boot.bin directly. 1443 1444ifeq ($(CONFIG_SPL),y) 1445spl/u-boot-spl-mtk.bin: spl/u-boot-spl 1446 1447u-boot-mtk.bin: u-boot.dtb u-boot.img spl/u-boot-spl-mtk.bin FORCE 1448 $(call if_changed,binman) 1449else 1450MKIMAGEFLAGS_u-boot-mtk.bin = -T mtk_image \ 1451 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \ 1452 -n "$(patsubst "%",%,$(CONFIG_MTK_BROM_HEADER_INFO))" 1453 1454u-boot-mtk.bin: u-boot.bin FORCE 1455 $(call if_changed,mkimage) 1456endif 1457 1458ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(ARCH)/Makefile.postlink) 1459 1460# Rule to link u-boot 1461# May be overridden by arch/$(ARCH)/config.mk 1462quiet_cmd_u-boot__ ?= LD $@ 1463 cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \ 1464 -T u-boot.lds $(u-boot-init) \ 1465 --start-group $(u-boot-main) --end-group \ 1466 $(PLATFORM_LIBS) -Map u-boot.map; \ 1467 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) 1468 1469quiet_cmd_smap = GEN common/system_map.o 1470cmd_smap = \ 1471 smap=`$(call SYSTEM_MAP,u-boot) | \ 1472 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \ 1473 $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \ 1474 -c $(srctree)/common/system_map.c -o common/system_map.o 1475 1476u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds FORCE 1477 +$(call if_changed,u-boot__) 1478ifeq ($(CONFIG_KALLSYMS),y) 1479 $(call cmd,smap) 1480 $(call cmd,u-boot__) common/system_map.o 1481endif 1482 1483ifeq ($(CONFIG_RISCV),y) 1484 @tools/prelink-riscv $@ 0 1485endif 1486 1487quiet_cmd_sym ?= SYM $@ 1488 cmd_sym ?= $(OBJDUMP) -t $< > $@ 1489u-boot.sym: u-boot FORCE 1490 $(call if_changed,sym) 1491 1492# The actual objects are generated when descending, 1493# make sure no implicit rule kicks in 1494$(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ; 1495 1496# Handle descending into subdirectories listed in $(vmlinux-dirs) 1497# Preset locale variables to speed up the build process. Limit locale 1498# tweaks to this spot to avoid wrong language settings when running 1499# make menuconfig etc. 1500# Error messages still appears in the original language 1501 1502PHONY += $(u-boot-dirs) 1503$(u-boot-dirs): prepare scripts 1504 $(Q)$(MAKE) $(build)=$@ 1505 1506tools: prepare 1507# The "tools" are needed early 1508$(filter-out tools, $(u-boot-dirs)): tools 1509# The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC 1510# is "yes"), so compile examples after U-Boot is compiled. 1511examples: $(filter-out examples, $(u-boot-dirs)) 1512 1513define filechk_uboot.release 1514 echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1515endef 1516 1517# Store (new) UBOOTRELEASE string in include/config/uboot.release 1518include/config/uboot.release: include/config/auto.conf FORCE 1519 $(call filechk,uboot.release) 1520 1521 1522# Things we need to do before we recursively start building the kernel 1523# or the modules are listed in "prepare". 1524# A multi level approach is used. prepareN is processed before prepareN-1. 1525# archprepare is used in arch Makefiles and when processed asm symlink, 1526# version.h and scripts_basic is processed / created. 1527 1528# Listed in dependency order 1529PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 1530 1531# prepare3 is used to check if we are building in a separate output directory, 1532# and if so do: 1533# 1) Check that make has not been executed in the kernel src $(srctree) 1534prepare3: include/config/uboot.release 1535ifneq ($(KBUILD_SRC),) 1536 @$(kecho) ' Using $(srctree) as source for U-Boot' 1537 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ 1538 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ 1539 echo >&2 " in the '$(srctree)' directory.";\ 1540 /bin/false; \ 1541 fi; 1542endif 1543 1544# prepare2 creates a makefile if using a separate output directory 1545prepare2: prepare3 outputmakefile 1546 1547prepare1: prepare2 $(version_h) $(timestamp_h) \ 1548 include/config/auto.conf 1549ifeq ($(wildcard $(LDSCRIPT)),) 1550 @echo >&2 " Could not find linker script." 1551 @/bin/false 1552endif 1553 1554ifeq ($(CONFIG_USE_DEFAULT_ENV_FILE),y) 1555prepare1: $(defaultenv_h) 1556endif 1557 1558archprepare: prepare1 scripts_basic 1559 1560prepare0: archprepare FORCE 1561 $(Q)$(MAKE) $(build)=. 1562 1563# All the preparing.. 1564prepare: prepare0 1565 1566# Generate some files 1567# --------------------------------------------------------------------------- 1568 1569define filechk_version.h 1570 (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \ 1571 echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \ 1572 echo \#define CC_VERSION_STRING \"$$(LC_ALL=C $(CC) --version | head -n 1)\"; \ 1573 echo \#define LD_VERSION_STRING \"$$(LC_ALL=C $(LD) --version | head -n 1)\"; ) 1574endef 1575 1576# The SOURCE_DATE_EPOCH mechanism requires a date that behaves like GNU date. 1577# The BSD date on the other hand behaves different and would produce errors 1578# with the misused '-d' switch. Respect that and search a working date with 1579# well known pre- and suffixes for the GNU variant of date. 1580define filechk_timestamp.h 1581 (if test -n "$${SOURCE_DATE_EPOCH}"; then \ 1582 SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \ 1583 DATE=""; \ 1584 for date in gdate date.gnu date; do \ 1585 $${date} -u -d "$${SOURCE_DATE}" >/dev/null 2>&1 && DATE="$${date}"; \ 1586 done; \ 1587 if test -n "$${DATE}"; then \ 1588 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DATE "%b %d %C%y"'; \ 1589 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TIME "%T"'; \ 1590 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TZ "%z"'; \ 1591 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \ 1592 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \ 1593 else \ 1594 return 42; \ 1595 fi; \ 1596 else \ 1597 LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \ 1598 LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \ 1599 LC_ALL=C date +'#define U_BOOT_TZ "%z"'; \ 1600 LC_ALL=C date +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \ 1601 LC_ALL=C date +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \ 1602 fi) 1603endef 1604 1605define filechk_defaultenv.h 1606 (grep -v '^#' | \ 1607 grep -v '^$$' | \ 1608 tr '\n' '\0' | \ 1609 sed -e 's/\\\x0/\n/' | \ 1610 xxd -i ; echo ", 0x00" ; ) 1611endef 1612 1613$(version_h): include/config/uboot.release FORCE 1614 $(call filechk,version.h) 1615 1616$(timestamp_h): $(srctree)/Makefile FORCE 1617 $(call filechk,timestamp.h) 1618 1619$(defaultenv_h): $(CONFIG_DEFAULT_ENV_FILE:"%"=%) FORCE 1620 $(call filechk,defaultenv.h) 1621 1622# --------------------------------------------------------------------------- 1623quiet_cmd_cpp_lds = LDS $@ 1624cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) \ 1625 -D__ASSEMBLY__ -x assembler-with-cpp -std=c99 -P -o $@ $< 1626 1627u-boot.lds: $(LDSCRIPT) prepare FORCE 1628 $(call if_changed_dep,cpp_lds) 1629 1630spl/u-boot-spl.bin: spl/u-boot-spl 1631 @: 1632spl/u-boot-spl: tools prepare \ 1633 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb) \ 1634 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_TPL_OF_PLATDATA),dts/dt.dtb) 1635 $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all 1636 1637spl/sunxi-spl.bin: spl/u-boot-spl 1638 @: 1639 1640spl/sunxi-spl-with-ecc.bin: spl/sunxi-spl.bin 1641 @: 1642 1643spl/u-boot-spl.sfp: spl/u-boot-spl 1644 @: 1645 1646spl/boot.bin: spl/u-boot-spl 1647 @: 1648 1649tpl/u-boot-tpl.bin: tools prepare \ 1650 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb) 1651 $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all 1652 1653TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include) 1654 1655FIND := find 1656FINDFLAGS := -L 1657 1658tags ctags: 1659 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \ 1660 -name '*.[chS]' -print` 1661 ln -s ctags tags 1662 1663etags: 1664 etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \ 1665 -name '*.[chS]' -print` 1666cscope: 1667 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \ 1668 cscope.files 1669 cscope -b -q -k 1670 1671SYSTEM_MAP = \ 1672 $(NM) $1 | \ 1673 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \ 1674 LC_ALL=C sort 1675System.map: u-boot 1676 @$(call SYSTEM_MAP,$<) > $@ 1677 1678######################################################################### 1679 1680# ARM relocations should all be R_ARM_RELATIVE (32-bit) or 1681# R_AARCH64_RELATIVE (64-bit). 1682checkarmreloc: u-boot 1683 @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \ 1684 grep R_A | sort -u`"; \ 1685 if test "$$RELOC" != "R_ARM_RELATIVE" -a \ 1686 "$$RELOC" != "R_AARCH64_RELATIVE"; then \ 1687 echo "$< contains unexpected relocations: $$RELOC"; \ 1688 false; \ 1689 fi 1690 1691envtools: scripts_basic $(version_h) $(timestamp_h) 1692 $(Q)$(MAKE) $(build)=tools/env 1693 1694tools-only: scripts_basic $(version_h) $(timestamp_h) 1695 $(Q)$(MAKE) $(build)=tools 1696 1697tools-all: export HOST_TOOLS_ALL=y 1698tools-all: envtools tools ; 1699 1700cross_tools: export CROSS_BUILD_TOOLS=y 1701cross_tools: tools ; 1702 1703.PHONY : CHANGELOG 1704CHANGELOG: 1705 git log --no-merges U-Boot-1_1_5.. | \ 1706 unexpand -a | sed -e 's/\s\s*$$//' > $@ 1707 1708######################################################################### 1709 1710### 1711# Cleaning is done on three levels. 1712# make clean Delete most generated files 1713# Leave enough to build external modules 1714# make mrproper Delete the current configuration, and all generated files 1715# make distclean Remove editor backup files, patch leftover files and the like 1716 1717# Directories & files removed with 'make clean' 1718CLEAN_DIRS += $(MODVERDIR) \ 1719 $(foreach d, spl tpl, $(patsubst %,$d/%, \ 1720 $(filter-out include, $(shell ls -1 $d 2>/dev/null)))) 1721 1722CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h \ 1723 boot* u-boot* MLO* SPL System.map fit-dtb.blob 1724 1725# Directories & files removed with 'make mrproper' 1726MRPROPER_DIRS += include/config include/generated spl tpl \ 1727 .tmp_objdiff 1728MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \ 1729 ctags etags tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS 1730 1731# clean - Delete most, but leave enough to build external modules 1732# 1733clean: rm-dirs := $(CLEAN_DIRS) 1734clean: rm-files := $(CLEAN_FILES) 1735 1736clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f)) 1737 1738clean-dirs := $(addprefix _clean_, $(clean-dirs)) 1739 1740PHONY += $(clean-dirs) clean archclean 1741$(clean-dirs): 1742 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1743 1744clean: $(clean-dirs) 1745 $(call cmd,rmdirs) 1746 $(call cmd,rmfiles) 1747 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1748 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1749 -o -name '*.ko.*' -o -name '*.su' \ 1750 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1751 -o -name '*.lex.c' -o -name '*.tab.[ch]' \ 1752 -o -name '*.symtypes' -o -name 'modules.order' \ 1753 -o -name modules.builtin -o -name '.tmp_*.o.*' \ 1754 -o -name 'dsdt.aml' -o -name 'dsdt.asl.tmp' -o -name 'dsdt.c' \ 1755 -o -name '*.efi' -o -name '*.gcno' -o -name '*.so' \) \ 1756 -type f -print | xargs rm -f 1757 1758# mrproper - Delete all generated files, including .config 1759# 1760mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 1761mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1762mrproper-dirs := $(addprefix _mrproper_,scripts) 1763 1764PHONY += $(mrproper-dirs) mrproper archmrproper 1765$(mrproper-dirs): 1766 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1767 1768mrproper: clean $(mrproper-dirs) 1769 $(call cmd,rmdirs) 1770 $(call cmd,rmfiles) 1771 @rm -f arch/*/include/asm/arch 1772 1773# distclean 1774# 1775PHONY += distclean 1776 1777distclean: mrproper 1778 @find $(srctree) $(RCS_FIND_IGNORE) \ 1779 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1780 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 1781 -o -name '.*.rej' -o -name '*%' -o -name 'core' \ 1782 -o -name '*.pyc' \) \ 1783 -type f -print | xargs rm -f 1784 @rm -f boards.cfg 1785 1786backup: 1787 F=`basename $(srctree)` ; cd .. ; \ 1788 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F 1789 1790help: 1791 @echo 'Cleaning targets:' 1792 @echo ' clean - Remove most generated files but keep the config' 1793 @echo ' mrproper - Remove all generated files + config + various backup files' 1794 @echo ' distclean - mrproper + remove editor backup and patch files' 1795 @echo '' 1796 @echo 'Configuration targets:' 1797 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1798 @echo '' 1799 @echo 'Test targets:' 1800 @echo '' 1801 @echo ' check - Run all automated tests that use sandbox' 1802 @echo ' qcheck - Run quick automated tests that use sandbox' 1803 @echo '' 1804 @echo 'Other generic targets:' 1805 @echo ' all - Build all necessary images depending on configuration' 1806 @echo ' tests - Build U-Boot for sandbox and run tests' 1807 @echo '* u-boot - Build the bare u-boot' 1808 @echo ' dir/ - Build all files in dir and below' 1809 @echo ' dir/file.[oisS] - Build specified target only' 1810 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1811 @echo ' (requires a recent binutils and recent build (System.map))' 1812 @echo ' tags/ctags - Generate ctags file for editors' 1813 @echo ' etags - Generate etags file for editors' 1814 @echo ' cscope - Generate cscope index' 1815 @echo ' ubootrelease - Output the release version string (use with make -s)' 1816 @echo ' ubootversion - Output the version stored in Makefile (use with make -s)' 1817 @echo " cfg - Don't build, just create the .cfg files" 1818 @echo " envtools - Build only the target-side environment tools" 1819 @echo '' 1820 @echo 'Static analysers' 1821 @echo ' checkstack - Generate a list of stack hogs' 1822 @echo ' coccicheck - Execute static code analysis with Coccinelle' 1823 @echo '' 1824 @echo 'Documentation targets:' 1825 @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp 1826 @echo '' 1827 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1828 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1829 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1830 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 1831 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1832 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1833 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' 1834 @echo ' 1: warnings which may be relevant and do not occur too often' 1835 @echo ' 2: warnings which occur quite often but may still be relevant' 1836 @echo ' 3: more obscure warnings, can most likely be ignored' 1837 @echo ' Multiple levels can be combined with W=12 or W=123' 1838 @echo '' 1839 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1840 @echo 'For further info see the ./README file' 1841 1842tests check: 1843 $(srctree)/test/run 1844 1845qcheck: 1846 $(srctree)/test/run quick 1847 1848# Documentation targets 1849# --------------------------------------------------------------------------- 1850DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \ 1851 linkcheckdocs dochelp refcheckdocs 1852PHONY += $(DOC_TARGETS) 1853$(DOC_TARGETS): scripts_basic FORCE 1854 $(Q)$(MAKE) $(build)=Documentation $@ 1855 1856endif #ifeq ($(config-targets),1) 1857endif #ifeq ($(mixed-targets),1) 1858 1859PHONY += checkstack ubootrelease ubootversion 1860 1861checkstack: 1862 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \ 1863 $(PERL) $(src)/scripts/checkstack.pl $(ARCH) 1864 1865ubootrelease: 1866 @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1867 1868ubootversion: 1869 @echo $(UBOOTVERSION) 1870 1871# Single targets 1872# --------------------------------------------------------------------------- 1873# Single targets are compatible with: 1874# - build with mixed source and output 1875# - build with separate output dir 'make O=...' 1876# - external modules 1877# 1878# target-dir => where to store outputfile 1879# build-dir => directory in kernel source tree to use 1880 1881ifeq ($(KBUILD_EXTMOD),) 1882 build-dir = $(patsubst %/,%,$(dir $@)) 1883 target-dir = $(dir $@) 1884else 1885 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) 1886 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) 1887 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) 1888endif 1889 1890%.s: %.c prepare scripts FORCE 1891 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1892%.i: %.c prepare scripts FORCE 1893 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1894%.o: %.c prepare scripts FORCE 1895 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1896%.lst: %.c prepare scripts FORCE 1897 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1898%.s: %.S prepare scripts FORCE 1899 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1900%.o: %.S prepare scripts FORCE 1901 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1902%.symtypes: %.c prepare scripts FORCE 1903 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1904 1905# Modules 1906/: prepare scripts FORCE 1907 $(cmd_crmodverdir) 1908 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1909 $(build)=$(build-dir) 1910%/: prepare scripts FORCE 1911 $(cmd_crmodverdir) 1912 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1913 $(build)=$(build-dir) 1914%.ko: prepare scripts FORCE 1915 $(cmd_crmodverdir) 1916 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1917 $(build)=$(build-dir) $(@:.ko=.o) 1918 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1919 1920# Consistency checks 1921# --------------------------------------------------------------------------- 1922 1923PHONY += coccicheck 1924 1925coccicheck: 1926 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ 1927 1928# FIXME Should go into a make.lib or something 1929# =========================================================================== 1930 1931quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 1932 cmd_rmdirs = rm -rf $(rm-dirs) 1933 1934quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 1935 cmd_rmfiles = rm -f $(rm-files) 1936 1937# read all saved command lines 1938 1939targets := $(wildcard $(sort $(targets))) 1940cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 1941 1942ifneq ($(cmd_files),) 1943 $(cmd_files): ; # Do not try to update included dependency files 1944 include $(cmd_files) 1945endif 1946 1947endif # skip-makefile 1948 1949PHONY += FORCE 1950FORCE: 1951 1952# Declare the contents of the .PHONY variable as phony. We keep that 1953# information in a variable so we can use it in if_changed and friends. 1954.PHONY: $(PHONY) 1955