Makefile

   1 #
   2 # SPDX-License-Identifier:      GPL-2.0+
   3 #
   4
   5 VERSION = 2016
   6 PATCHLEVEL = 03
   7 SUBLEVEL =
   8 EXTRAVERSION = -rc1
   9 NAME =
  10
  11 # *DOCUMENTATION*
  12 # To see a list of typical targets execute "make help"
  13 # More info can be located in ./README
  14 # Comments in this file are targeted only to the developer, do not
  15 # expect to learn how to build the kernel reading this file.
  16
  17 # o Do not use make's built-in rules and variables
  18 #   (this increases performance and avoids hard-to-debug behaviour);
  19 # o Look for make include files relative to root of kernel src
  20 MAKEFLAGS += -rR --include-dir=$(CURDIR)
  21
  22 # Avoid funny character set dependencies
  23 unexport LC_ALL
  24 LC_COLLATE=C
  25 LC_NUMERIC=C
  26 export LC_COLLATE LC_NUMERIC
  27
  28 # Avoid interference with shell env settings
  29 unexport GREP_OPTIONS
  30
  31 # We are using a recursive build, so we need to do a little thinking
  32 # to get the ordering right.
  33 #
  34 # Most importantly: sub-Makefiles should only ever modify files in
  35 # their own directory. If in some directory we have a dependency on
  36 # a file in another dir (which doesn't happen often, but it's often
  37 # unavoidable when linking the built-in.o targets which finally
  38 # turn into vmlinux), we will call a sub make in that other dir, and
  39 # after that we are sure that everything which is in that other dir
  40 # is now up to date.
  41 #
  42 # The only cases where we need to modify files which have global
  43 # effects are thus separated out and done before the recursive
  44 # descending is started. They are now explicitly listed as the
  45 # prepare rule.
  46
  47 # Beautify output
  48 # ---------------------------------------------------------------------------
  49 #
  50 # Normally, we echo the whole command before executing it. By making
  51 # that echo $($(quiet)$(cmd)), we now have the possibility to set
  52 # $(quiet) to choose other forms of output instead, e.g.
  53 #
  54 #         quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
  55 #         cmd_cc_o_c       = $(CC) $(c_flags) -c -o $@ $<
  56 #
  57 # If $(quiet) is empty, the whole command will be printed.
  58 # If it is set to "quiet_", only the short version will be printed.
  59 # If it is set to "silent_", nothing will be printed at all, since
  60 # the variable $(silent_cmd_cc_o_c) doesn't exist.
  61 #
  62 # A simple variant is to prefix commands with $(Q) - that's useful
  63 # for commands that shall be hidden in non-verbose mode.
  64 #
  65 #       $(Q)ln $@ :<
  66 #
  67 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
  68 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
  69 #
  70 # To put more focus on warnings, be less verbose as default
  71 # Use 'make V=1' to see the full commands
  72
  73 ifeq ("$(origin V)", "command line")
  74   KBUILD_VERBOSE = $(V)
  75 endif
  76 ifndef KBUILD_VERBOSE
  77   KBUILD_VERBOSE = 0
  78 endif
  79
  80 ifeq ($(KBUILD_VERBOSE),1)
  81   quiet =
  82   Q =
  83 else
  84   quiet=quiet_
  85   Q = @
  86 endif
  87
  88 # If the user is running make -s (silent mode), suppress echoing of
  89 # commands
  90
  91 ifneq ($(filter 4.%,$(MAKE_VERSION)),)  # make-4
  92 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
  93   quiet=silent_
  94 endif
  95 else                                    # make-3.8x
  96 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
  97   quiet=silent_
  98 endif
  99 endif
 100
 101 export quiet Q KBUILD_VERBOSE
 102
 103 # kbuild supports saving output files in a separate directory.
 104 # To locate output files in a separate directory two syntaxes are supported.
 105 # In both cases the working directory must be the root of the kernel src.
 106 # 1) O=
 107 # Use "make O=dir/to/store/output/files/"
 108 #
 109 # 2) Set KBUILD_OUTPUT
 110 # Set the environment variable KBUILD_OUTPUT to point to the directory
 111 # where the output files shall be placed.
 112 # export KBUILD_OUTPUT=dir/to/store/output/files/
 113 # make
 114 #
 115 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
 116 # variable.
 117
 118 # KBUILD_SRC is set on invocation of make in OBJ directory
 119 # KBUILD_SRC is not intended to be used by the regular user (for now)
 120 ifeq ($(KBUILD_SRC),)
 121
 122 # OK, Make called in directory where kernel src resides
 123 # Do we want to locate output files in a separate directory?
 124 ifeq ("$(origin O)", "command line")
 125   KBUILD_OUTPUT := $(O)
 126 endif
 127
 128 # That's our default target when none is given on the command line
 129 PHONY := _all
 130 _all:
 131
 132 # Cancel implicit rules on top Makefile
 133 $(CURDIR)/Makefile Makefile: ;
 134
 135 ifneq ($(KBUILD_OUTPUT),)
 136 # Invoke a second make in the output directory, passing relevant variables
 137 # check that the output directory actually exists
 138 saved-output := $(KBUILD_OUTPUT)
 139 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
 140                                                                 && /bin/pwd)
 141 $(if $(KBUILD_OUTPUT),, \
 142      $(error failed to create output directory "$(saved-output)"))
 143
 144 PHONY += $(MAKECMDGOALS) sub-make
 145
 146 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
 147         @:
 148
 149 sub-make: FORCE
 150         $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
 151         -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS))
 152
 153 # Leave processing to above invocation of make
 154 skip-makefile := 1
 155 endif # ifneq ($(KBUILD_OUTPUT),)
 156 endif # ifeq ($(KBUILD_SRC),)
 157
 158 # We process the rest of the Makefile if this is the final invocation of make
 159 ifeq ($(skip-makefile),)
 160
 161 # Do not print "Entering directory ...",
 162 # but we want to display it when entering to the output directory
 163 # so that IDEs/editors are able to understand relative filenames.
 164 MAKEFLAGS += --no-print-directory
 165
 166 # Call a source code checker (by default, "sparse") as part of the
 167 # C compilation.
 168 #
 169 # Use 'make C=1' to enable checking of only re-compiled files.
 170 # Use 'make C=2' to enable checking of *all* source files, regardless
 171 # of whether they are re-compiled or not.
 172 #
 173 # See the file "Documentation/sparse.txt" for more details, including
 174 # where to get the "sparse" utility.
 175
 176 ifeq ("$(origin C)", "command line")
 177   KBUILD_CHECKSRC = $(C)
 178 endif
 179 ifndef KBUILD_CHECKSRC
 180   KBUILD_CHECKSRC = 0
 181 endif
 182
 183 # Use make M=dir to specify directory of external module to build
 184 # Old syntax make ... SUBDIRS=$PWD is still supported
 185 # Setting the environment variable KBUILD_EXTMOD take precedence
 186 ifdef SUBDIRS
 187   KBUILD_EXTMOD ?= $(SUBDIRS)
 188 endif
 189
 190 ifeq ("$(origin M)", "command line")
 191   KBUILD_EXTMOD := $(M)
 192 endif
 193
 194 # If building an external module we do not care about the all: rule
 195 # but instead _all depend on modules
 196 PHONY += all
 197 ifeq ($(KBUILD_EXTMOD),)
 198 _all: all
 199 else
 200 _all: modules
 201 endif
 202
 203 ifeq ($(KBUILD_SRC),)
 204         # building in the source tree
 205         srctree := .
 206 else
 207         ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
 208                 # building in a subdirectory of the source tree
 209                 srctree := ..
 210         else
 211                 srctree := $(KBUILD_SRC)
 212         endif
 213 endif
 214 objtree         := .
 215 src             := $(srctree)
 216 obj             := $(objtree)
 217
 218 VPATH           := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
 219
 220 export srctree objtree VPATH
 221
 222 # Make sure CDPATH settings don't interfere
 223 unexport CDPATH
 224
 225 #########################################################################
 226
 227 HOSTARCH := $(shell uname -m | \
 228         sed -e s/i.86/x86/ \
 229             -e s/sun4u/sparc64/ \
 230             -e s/arm.*/arm/ \
 231             -e s/sa110/arm/ \
 232             -e s/ppc64/powerpc/ \
 233             -e s/ppc/powerpc/ \
 234             -e s/macppc/powerpc/\
 235             -e s/sh.*/sh/)
 236
 237 HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
 238             sed -e 's/\(cygwin\).*/cygwin/')
 239
 240 export  HOSTARCH HOSTOS
 241
 242 #########################################################################
 243
 244 # set default to nothing for native builds
 245 ifeq ($(HOSTARCH),$(ARCH))
 246 CROSS_COMPILE ?=
 247 endif
 248
 249 KCONFIG_CONFIG  ?= .config
 250 export KCONFIG_CONFIG
 251
 252 # SHELL used by kbuild
 253 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
 254           else if [ -x /bin/bash ]; then echo /bin/bash; \
 255           else echo sh; fi ; fi)
 256
 257 HOSTCC       = cc
 258 HOSTCXX      = c++
 259 HOSTCFLAGS   = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
 260 HOSTCXXFLAGS = -O2
 261
 262 ifeq ($(HOSTOS),cygwin)
 263 HOSTCFLAGS      += -ansi
 264 endif
 265
 266 # Mac OS X / Darwin's C preprocessor is Apple specific.  It
 267 # generates numerous errors and warnings.  We want to bypass it
 268 # and use GNU C's cpp.  To do this we pass the -traditional-cpp
 269 # option to the compiler.  Note that the -traditional-cpp flag
 270 # DOES NOT have the same semantics as GNU C's flag, all it does
 271 # is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
 272 #
 273 # Apple's linker is similar, thanks to the new 2 stage linking
 274 # multiple symbol definitions are treated as errors, hence the
 275 # -multiply_defined suppress option to turn off this error.
 276 #
 277 ifeq ($(HOSTOS),darwin)
 278 # get major and minor product version (e.g. '10' and '6' for Snow Leopard)
 279 DARWIN_MAJOR_VERSION    = $(shell sw_vers -productVersion | cut -f 1 -d '.')
 280 DARWIN_MINOR_VERSION    = $(shell sw_vers -productVersion | cut -f 2 -d '.')
 281
 282 os_x_before     = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
 283         $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
 284
 285 # Snow Leopards build environment has no longer restrictions as described above
 286 HOSTCC       = $(call os_x_before, 10, 5, "cc", "gcc")
 287 HOSTCFLAGS  += $(call os_x_before, 10, 4, "-traditional-cpp")
 288 HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
 289
 290 # since Lion (10.7) ASLR is on by default, but we use linker generated lists
 291 # in some host tools which is a problem then ... so disable ASLR for these
 292 # tools
 293 HOSTLDFLAGS += $(call os_x_before, 10, 7, "", "-Xlinker -no_pie")
 294 endif
 295
 296 # Decide whether to build built-in, modular, or both.
 297 # Normally, just do built-in.
 298
 299 KBUILD_MODULES :=
 300 KBUILD_BUILTIN := 1
 301
 302 # If we have only "make modules", don't compile built-in objects.
 303 # When we're building modules with modversions, we need to consider
 304 # the built-in objects during the descend as well, in order to
 305 # make sure the checksums are up to date before we record them.
 306
 307 ifeq ($(MAKECMDGOALS),modules)
 308   KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
 309 endif
 310
 311 # If we have "make <whatever> modules", compile modules
 312 # in addition to whatever we do anyway.
 313 # Just "make" or "make all" shall build modules as well
 314
 315 # U-Boot does not need modules
 316 #ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
 317 #  KBUILD_MODULES := 1
 318 #endif
 319
 320 #ifeq ($(MAKECMDGOALS),)
 321 #  KBUILD_MODULES := 1
 322 #endif
 323
 324 export KBUILD_MODULES KBUILD_BUILTIN
 325 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
 326
 327 # We need some generic definitions (do not try to remake the file).
 328 scripts/Kbuild.include: ;
 329 include scripts/Kbuild.include
 330
 331 # Make variables (CC, etc...)
 332
 333 AS              = $(CROSS_COMPILE)as
 334 # Always use GNU ld
 335 ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
 336 LD              = $(CROSS_COMPILE)ld.bfd
 337 else
 338 LD              = $(CROSS_COMPILE)ld
 339 endif
 340 CC              = $(CROSS_COMPILE)gcc
 341 CPP             = $(CC) -E
 342 AR              = $(CROSS_COMPILE)ar
 343 NM              = $(CROSS_COMPILE)nm
 344 LDR             = $(CROSS_COMPILE)ldr
 345 STRIP           = $(CROSS_COMPILE)strip
 346 OBJCOPY         = $(CROSS_COMPILE)objcopy
 347 OBJDUMP         = $(CROSS_COMPILE)objdump
 348 AWK             = awk
 349 PERL            = perl
 350 PYTHON          = python
 351 DTC             = dtc
 352 CHECK           = sparse
 353
 354 CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
 355                   -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
 356
 357 KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__
 358
 359 KBUILD_CFLAGS   := -Wall -Wstrict-prototypes \
 360                    -Wno-format-security \
 361                    -fno-builtin -ffreestanding
 362 KBUILD_AFLAGS   := -D__ASSEMBLY__
 363
 364 # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
 365 UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
 366 UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
 367
 368 export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
 369 export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
 370 export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
 371 export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
 372 export MAKE AWK PERL PYTHON
 373 export HOSTCXX HOSTCXXFLAGS DTC CHECK CHECKFLAGS
 374
 375 export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
 376 export KBUILD_CFLAGS KBUILD_AFLAGS
 377
 378 # When compiling out-of-tree modules, put MODVERDIR in the module
 379 # tree rather than in the kernel tree. The kernel tree might
 380 # even be read-only.
 381 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
 382
 383 # Files to ignore in find ... statements
 384
 385 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o    \
 386                           -name CVS -o -name .pc -o -name .hg -o -name .git \) \
 387                           -prune -o
 388 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
 389                          --exclude CVS --exclude .pc --exclude .hg --exclude .git
 390
 391 # ===========================================================================
 392 # Rules shared between *config targets and build targets
 393
 394 # Basic helpers built in scripts/
 395 PHONY += scripts_basic
 396 scripts_basic:
 397         $(Q)$(MAKE) $(build)=scripts/basic
 398         $(Q)rm -f .tmp_quiet_recordmcount
 399
 400 # To avoid any implicit rule to kick in, define an empty command.
 401 scripts/basic/%: scripts_basic ;
 402
 403 PHONY += outputmakefile
 404 # outputmakefile generates a Makefile in the output directory, if using a
 405 # separate output directory. This allows convenient use of make in the
 406 # output directory.
 407 outputmakefile:
 408 ifneq ($(KBUILD_SRC),)
 409         $(Q)ln -fsn $(srctree) source
 410         $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
 411             $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
 412 endif
 413
 414 # To make sure we do not include .config for any of the *config targets
 415 # catch them early, and hand them over to scripts/kconfig/Makefile
 416 # It is allowed to specify more targets when calling make, including
 417 # mixing *config targets and build targets.
 418 # For example 'make oldconfig all'.
 419 # Detect when mixed targets is specified, and make a second invocation
 420 # of make so .config is not included in this case either (for *config).
 421
 422 version_h := include/generated/version_autogenerated.h
 423 timestamp_h := include/generated/timestamp_autogenerated.h
 424
 425 no-dot-config-targets := clean clobber mrproper distclean \
 426                          help %docs check% coccicheck \
 427                          ubootversion backup
 428
 429 config-targets := 0
 430 mixed-targets  := 0
 431 dot-config     := 1
 432
 433 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
 434         ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
 435                 dot-config := 0
 436         endif
 437 endif
 438
 439 ifeq ($(KBUILD_EXTMOD),)
 440         ifneq ($(filter config %config,$(MAKECMDGOALS)),)
 441                 config-targets := 1
 442                 ifneq ($(words $(MAKECMDGOALS)),1)
 443                         mixed-targets := 1
 444                 endif
 445         endif
 446 endif
 447
 448 ifeq ($(mixed-targets),1)
 449 # ===========================================================================
 450 # We're called with mixed targets (*config and build targets).
 451 # Handle them one by one.
 452
 453 PHONY += $(MAKECMDGOALS) __build_one_by_one
 454
 455 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
 456         @:
 457
 458 __build_one_by_one:
 459         $(Q)set -e; \
 460         for i in $(MAKECMDGOALS); do \
 461                 $(MAKE) -f $(srctree)/Makefile $$i; \
 462         done
 463
 464 else
 465 ifeq ($(config-targets),1)
 466 # ===========================================================================
 467 # *config targets only - make sure prerequisites are updated, and descend
 468 # in scripts/kconfig to make the *config target
 469
 470 KBUILD_DEFCONFIG := sandbox_defconfig
 471 export KBUILD_DEFCONFIG KBUILD_KCONFIG
 472
 473 config: scripts_basic outputmakefile FORCE
 474         $(Q)$(MAKE) $(build)=scripts/kconfig $@
 475
 476 %config: scripts_basic outputmakefile FORCE
 477         $(Q)$(MAKE) $(build)=scripts/kconfig $@
 478
 479 else
 480 # ===========================================================================
 481 # Build targets only - this includes vmlinux, arch specific targets, clean
 482 # targets and others. In general all targets except *config targets.
 483
 484 ifeq ($(dot-config),1)
 485 # Read in config
 486 -include include/config/auto.conf
 487
 488 # Read in dependencies to all Kconfig* files, make sure to run
 489 # oldconfig if changes are detected.
 490 -include include/config/auto.conf.cmd
 491
 492 # To avoid any implicit rule to kick in, define an empty command
 493 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
 494
 495 # If .config is newer than include/config/auto.conf, someone tinkered
 496 # with it and forgot to run make oldconfig.
 497 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
 498 # we execute the config step to be sure to catch updated Kconfig files
 499 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
 500         $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
 501         @# If the following part fails, include/config/auto.conf should be
 502         @# deleted so "make silentoldconfig" will be re-run on the next build.
 503         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf || \
 504                 { rm -f include/config/auto.conf; false; }
 505         @# include/config.h has been updated after "make silentoldconfig".
 506         @# We need to touch include/config/auto.conf so it gets newer
 507         @# than include/config.h.
 508         @# Otherwise, 'make silentoldconfig' would be invoked twice.
 509         $(Q)touch include/config/auto.conf
 510
 511 -include include/autoconf.mk
 512 -include include/autoconf.mk.dep
 513
 514 # We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf
 515 # is up-to-date. When we switch to a different board configuration, old CONFIG
 516 # macros are still remaining in include/config/auto.conf. Without the following
 517 # gimmick, wrong config.mk would be included leading nasty warnings/errors.
 518 ifneq ($(wildcard $(KCONFIG_CONFIG)),)
 519 ifneq ($(wildcard include/config/auto.conf),)
 520 autoconf_is_old := $(shell find . -path ./$(KCONFIG_CONFIG) -newer \
 521                                                 include/config/auto.conf)
 522 ifeq ($(autoconf_is_old),)
 523 include config.mk
 524 include arch/$(ARCH)/Makefile
 525 endif
 526 endif
 527 endif
 528
 529 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
 530 # that (or fail if absent).  Otherwise, search for a linker script in a
 531 # standard location.
 532
 533 ifndef LDSCRIPT
 534         #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
 535         ifdef CONFIG_SYS_LDSCRIPT
 536                 # need to strip off double quotes
 537                 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
 538         endif
 539 endif
 540
 541 # If there is no specified link script, we look in a number of places for it
 542 ifndef LDSCRIPT
 543         ifeq ($(wildcard $(LDSCRIPT)),)
 544                 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
 545         endif
 546         ifeq ($(wildcard $(LDSCRIPT)),)
 547                 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
 548         endif
 549         ifeq ($(wildcard $(LDSCRIPT)),)
 550                 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
 551         endif
 552 endif
 553
 554 else
 555 # Dummy target needed, because used as prerequisite
 556 include/config/auto.conf: ;
 557 endif # $(dot-config)
 558
 559 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
 560 KBUILD_CFLAGS   += -Os
 561 else
 562 KBUILD_CFLAGS   += -O2
 563 endif
 564
 565 ifdef BUILD_TAG
 566 KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
 567 endif
 568
 569 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
 570 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks)
 571
 572 KBUILD_CFLAGS   += -g
 573 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
 574 # option to the assembler.
 575 KBUILD_AFLAGS   += -g
 576
 577 # Report stack usage if supported
 578 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
 579         KBUILD_CFLAGS += -fstack-usage
 580 endif
 581
 582 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
 583
 584 # turn jbsr into jsr for m68k
 585 ifeq ($(ARCH),m68k)
 586 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
 587 KBUILD_AFLAGS += -Wa,-gstabs,-S
 588 endif
 589 endif
 590
 591 # Prohibit date/time macros, which would make the build non-deterministic
 592 KBUILD_CFLAGS   += $(call cc-option,-Werror=date-time)
 593
 594 include scripts/Makefile.extrawarn
 595
 596 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
 597 KBUILD_CPPFLAGS += $(KCPPFLAGS)
 598 KBUILD_AFLAGS += $(KAFLAGS)
 599 KBUILD_CFLAGS += $(KCFLAGS)
 600
 601 # Use UBOOTINCLUDE when you must reference the include/ directory.
 602 # Needed to be compatible with the O= option
 603 UBOOTINCLUDE    := \
 604                 -Iinclude \
 605                 $(if $(KBUILD_SRC), -I$(srctree)/include) \
 606                 $(if $(CONFIG_SYS_THUMB_BUILD), $(if $(CONFIG_HAS_THUMB2),, \
 607                         -I$(srctree)/arch/$(ARCH)/thumb1/include),) \
 608                 -I$(srctree)/arch/$(ARCH)/include \
 609                 -include $(srctree)/include/linux/kconfig.h
 610
 611 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
 612 CHECKFLAGS     += $(NOSTDINC_FLAGS)
 613
 614 # FIX ME
 615 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
 616                                                         $(NOSTDINC_FLAGS)
 617 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
 618
 619 #########################################################################
 620 # U-Boot objects....order is important (i.e. start must be first)
 621
 622 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
 623
 624 libs-y += lib/
 625 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
 626 libs-$(CONFIG_OF_EMBED) += dts/
 627 libs-y += fs/
 628 libs-y += net/
 629 libs-y += disk/
 630 libs-y += drivers/
 631 libs-y += drivers/dma/
 632 libs-y += drivers/gpio/
 633 libs-y += drivers/i2c/
 634 libs-y += drivers/mmc/
 635 libs-y += drivers/mtd/
 636 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
 637 libs-y += drivers/mtd/onenand/
 638 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
 639 libs-y += drivers/mtd/spi/
 640 libs-y += drivers/net/
 641 libs-y += drivers/net/phy/
 642 libs-y += drivers/pci/
 643 libs-y += drivers/power/ \
 644         drivers/power/fuel_gauge/ \
 645         drivers/power/mfd/ \
 646         drivers/power/pmic/ \
 647         drivers/power/battery/ \
 648         drivers/power/regulator/
 649 libs-y += drivers/spi/
 650 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
 651 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
 652 libs-$(CONFIG_ALTERA_SDRAM) += drivers/ddr/altera/
 653 libs-y += drivers/serial/
 654 libs-y += drivers/usb/dwc3/
 655 libs-y += drivers/usb/emul/
 656 libs-y += drivers/usb/eth/
 657 libs-y += drivers/usb/gadget/
 658 libs-y += drivers/usb/gadget/udc/
 659 libs-y += drivers/usb/host/
 660 libs-y += drivers/usb/musb/
 661 libs-y += drivers/usb/musb-new/
 662 libs-y += drivers/usb/phy/
 663 libs-y += drivers/usb/ulpi/
 664 libs-y += cmd/
 665 libs-y += common/
 666 libs-$(CONFIG_API) += api/
 667 libs-$(CONFIG_HAS_POST) += post/
 668 libs-y += test/
 669 libs-y += test/dm/
 670 libs-$(CONFIG_UT_ENV) += test/env/
 671
 672 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
 673
 674 libs-y := $(sort $(libs-y))
 675
 676 u-boot-dirs     := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
 677
 678 u-boot-alldirs  := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
 679
 680 libs-y          := $(patsubst %/, %/built-in.o, $(libs-y))
 681
 682 u-boot-init := $(head-y)
 683 u-boot-main := $(libs-y)
 684
 685
 686 # Add GCC lib
 687 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
 688 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
 689 else
 690 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
 691 endif
 692 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
 693 export PLATFORM_LIBS
 694 export PLATFORM_LIBGCC
 695
 696 # Special flags for CPP when processing the linker script.
 697 # Pass the version down so we can handle backwards compatibility
 698 # on the fly.
 699 LDPPFLAGS += \
 700         -include $(srctree)/include/u-boot/u-boot.lds.h \
 701         -DCPUDIR=$(CPUDIR) \
 702         $(shell $(LD) --version | \
 703           sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
 704
 705 #########################################################################
 706 #########################################################################
 707
 708 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
 709 BOARD_SIZE_CHECK = \
 710         @actual=`wc -c $@ | awk '{print $$1}'`; \
 711         limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
 712         if test $$actual -gt $$limit; then \
 713                 echo "$@ exceeds file size limit:" >&2 ; \
 714                 echo "  limit:  $$limit bytes" >&2 ; \
 715                 echo "  actual: $$actual bytes" >&2 ; \
 716                 echo "  excess: $$((actual - limit)) bytes" >&2; \
 717                 exit 1; \
 718         fi
 719 else
 720 BOARD_SIZE_CHECK =
 721 endif
 722
 723 # Statically apply RELA-style relocations (currently arm64 only)
 724 ifneq ($(CONFIG_STATIC_RELA),)
 725 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
 726 DO_STATIC_RELA = \
 727         start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
 728         end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
 729         tools/relocate-rela $(2) $(3) $$start $$end
 730 else
 731 DO_STATIC_RELA =
 732 endif
 733
 734 # Always append ALL so that arch config.mk's can add custom ones
 735 ALL-y += u-boot.srec u-boot.bin System.map u-boot.cfg binary_size_check
 736
 737 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
 738 ifeq ($(CONFIG_SPL_FSL_PBL),y)
 739 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
 740 else
 741 ifneq ($(CONFIG_SECURE_BOOT), y)
 742 # For Secure Boot The Image needs to be signed and Header must also
 743 # be included. So The image has to be built explicitly
 744 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
 745 endif
 746 endif
 747 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
 748 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
 749 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
 750 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb
 751 ifeq ($(CONFIG_SPL_FRAMEWORK),y)
 752 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
 753 endif
 754 ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
 755 ifneq ($(CONFIG_SPL_TARGET),)
 756 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
 757 endif
 758 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
 759 ALL-$(CONFIG_EFI_APP) += u-boot-app.efi
 760 ALL-$(CONFIG_EFI_STUB) += u-boot-payload.efi
 761
 762 ifneq ($(BUILD_ROM),)
 763 ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
 764 endif
 765
 766 # enable combined SPL/u-boot/dtb rules for tegra
 767 ifeq ($(CONFIG_TEGRA)$(CONFIG_SPL),yy)
 768 ALL-y += u-boot-tegra.bin u-boot-nodtb-tegra.bin
 769 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb-tegra.bin
 770 endif
 771
 772 # Add optional build target if defined in board/cpu/soc headers
 773 ifneq ($(CONFIG_BUILD_TARGET),)
 774 ALL-y += $(CONFIG_BUILD_TARGET:"%"=%)
 775 endif
 776
 777 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
 778 ifneq ($(CONFIG_SYS_TEXT_BASE),)
 779 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
 780 endif
 781
 782 # Normally we fill empty space with 0xff
 783 quiet_cmd_objcopy = OBJCOPY $@
 784 cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \
 785         $(OBJCOPYFLAGS_$(@F)) $< $@
 786
 787 # Provide a version which does not do this, for use by EFI
 788 quiet_cmd_zobjcopy = OBJCOPY $@
 789 cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
 790
 791 quiet_cmd_efipayload = OBJCOPY $@
 792 cmd_efipayload = $(OBJCOPY) -I binary -O $(EFIPAYLOAD_BFDTARGET) -B $(EFIPAYLOAD_BFDARCH) $< $@
 793
 794 quiet_cmd_mkimage = MKIMAGE $@
 795 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
 796         $(if $(KBUILD_VERBOSE:1=), >/dev/null)
 797
 798 quiet_cmd_cat = CAT     $@
 799 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
 800
 801 append = cat $(filter-out $< $(PHONY), $^) >> $@
 802
 803 quiet_cmd_pad_cat = CAT     $@
 804 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
 805
 806 all:            $(ALL-y)
 807 ifneq ($(CONFIG_SYS_GENERIC_BOARD),y)
 808         @echo "===================== WARNING ======================"
 809         @echo "Please convert this board to generic board."
 810         @echo "Otherwise it will be removed by the end of 2014."
 811         @echo "See doc/README.generic-board for further information"
 812         @echo "===================================================="
 813 endif
 814 ifeq ($(CONFIG_DM_I2C_COMPAT),y)
 815         @echo "===================== WARNING ======================"
 816         @echo "This board uses CONFIG_DM_I2C_COMPAT. Please remove"
 817         @echo "(possibly in a subsequent patch in your series)"
 818         @echo "before sending patches to the mailing list."
 819         @echo "===================================================="
 820 endif
 821
 822 PHONY += dtbs
 823 dtbs dts/dt.dtb: checkdtc u-boot
 824         $(Q)$(MAKE) $(build)=dts dtbs
 825
 826 quiet_cmd_copy = COPY    $@
 827       cmd_copy = cp $< $@
 828
 829 ifeq ($(CONFIG_OF_SEPARATE),y)
 830 u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE
 831         $(call if_changed,cat)
 832
 833 u-boot.bin: u-boot-dtb.bin FORCE
 834         $(call if_changed,copy)
 835 else
 836 u-boot.bin: u-boot-nodtb.bin FORCE
 837         $(call if_changed,copy)
 838 endif
 839
 840 %.imx: %.bin
 841         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 842
 843 u-boot.dtb: dts/dt.dtb
 844         $(call cmd,copy)
 845
 846 OBJCOPYFLAGS_u-boot.hex := -O ihex
 847
 848 OBJCOPYFLAGS_u-boot.srec := -O srec
 849
 850 u-boot.hex u-boot.srec: u-boot FORCE
 851         $(call if_changed,objcopy)
 852
 853 OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \
 854                 $(if $(CONFIG_X86_RESET_VECTOR),-R .start16 -R .resetvec)
 855
 856 binary_size_check: u-boot-nodtb.bin FORCE
 857         @file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \
 858         map_size=$(shell cat u-boot.map | \
 859                 awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
 860                 | sed 's/0X//g' \
 861                 | bc); \
 862         if [ "" != "$$map_size" ]; then \
 863                 if test $$map_size -ne $$file_size; then \
 864                         echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
 865                         echo "  but u-boot-nodtb.bin shows $$file_size" >&2 ; \
 866                         exit 1; \
 867                 fi \
 868         fi
 869
 870 u-boot-nodtb.bin: u-boot FORCE
 871         $(call if_changed,objcopy)
 872         $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
 873         $(BOARD_SIZE_CHECK)
 874
 875 u-boot.ldr:     u-boot
 876                 $(CREATE_LDR_ENV)
 877                 $(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS)
 878                 $(BOARD_SIZE_CHECK)
 879
 880 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
 881
 882 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
 883
 884 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
 885         $(call if_changed,objcopy)
 886
 887 #
 888 # U-Boot entry point, needed for booting of full-blown U-Boot
 889 # from the SPL U-Boot version.
 890 #
 891 ifndef CONFIG_SYS_UBOOT_START
 892 CONFIG_SYS_UBOOT_START := 0
 893 endif
 894
 895 # Create a file containing the configuration options the image was built with
 896 quiet_cmd_cpp_cfg = CFG     $@
 897 cmd_cpp_cfg = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
 898         -DDO_DEPS_ONLY -D__ASSEMBLY__ -x assembler-with-cpp -P -dM -E -o $@ $<
 899
 900 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
 901         -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
 902         -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
 903
 904 MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
 905
 906 MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
 907         -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
 908
 909 MKIMAGEFLAGS_u-boot-spl.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
 910         -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
 911
 912 MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
 913                 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
 914
 915 u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE
 916         $(call if_changed,mkimage)
 917
 918 u-boot-spl.kwb: u-boot.img spl/u-boot-spl.bin FORCE
 919         $(call if_changed,mkimage)
 920
 921 u-boot.sha1:    u-boot.bin
 922                 tools/ubsha1 u-boot.bin
 923
 924 u-boot.dis:     u-boot
 925                 $(OBJDUMP) -d $< > $@
 926
 927 u-boot.cfg:     include/config.h FORCE
 928         $(call if_changed,cpp_cfg)
 929
 930 ifdef CONFIG_TPL
 931 SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
 932 else
 933 SPL_PAYLOAD := u-boot.bin
 934 endif
 935
 936 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
 937                                    --pad-to=$(CONFIG_SPL_PAD_TO)
 938 u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
 939         $(call if_changed,pad_cat)
 940
 941 MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE)
 942
 943 lpc32xx-spl.img: spl/u-boot-spl.bin FORCE
 944         $(call if_changed,mkimage)
 945
 946 OBJCOPYFLAGS_lpc32xx-boot-0.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
 947
 948 lpc32xx-boot-0.bin: lpc32xx-spl.img FORCE
 949         $(call if_changed,objcopy)
 950
 951 OBJCOPYFLAGS_lpc32xx-boot-1.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
 952
 953 lpc32xx-boot-1.bin: lpc32xx-spl.img FORCE
 954         $(call if_changed,objcopy)
 955
 956 lpc32xx-full.bin: lpc32xx-boot-0.bin lpc32xx-boot-1.bin u-boot.img FORCE
 957         $(call if_changed,cat)
 958
 959 CLEAN_FILES += lpc32xx-*
 960
 961 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
 962                                    --pad-to=$(CONFIG_TPL_PAD_TO)
 963 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
 964         $(call if_changed,pad_cat)
 965
 966 SPL: spl/u-boot-spl.bin FORCE
 967         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 968
 969 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
 970         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 971
 972 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
 973
 974 u-boot.ubl: u-boot-with-spl.bin FORCE
 975         $(call if_changed,mkimage)
 976
 977 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
 978         $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
 979         -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
 980 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
 981         $(call if_changed,mkimage)
 982
 983 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
 984 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
 985         $(call if_changed,pad_cat)
 986
 987 u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
 988         $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
 989 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
 990         $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
 991
 992 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
 993 # Both images are created using mkimage (crc etc), so that the ROM
 994 # bootloader can check its integrity. Padding needs to be done to the
 995 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
 996 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
 997 # The resulting image containing both U-Boot images is called u-boot.spr
 998 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
 999         -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
1000 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
1001         $(call if_changed,mkimage)
1002
1003 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1004                           --gap-fill=0xff
1005 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
1006         $(call if_changed,pad_cat)
1007
1008 ifneq ($(CONFIG_ARCH_SOCFPGA),)
1009 quiet_cmd_socboot = SOCBOOT $@
1010 cmd_socboot = cat       spl/u-boot-spl.sfp spl/u-boot-spl.sfp   \
1011                         spl/u-boot-spl.sfp spl/u-boot-spl.sfp   \
1012                         u-boot.img > $@ || rm -f $@
1013 u-boot-with-spl.sfp: spl/u-boot-spl.sfp u-boot.img FORCE
1014         $(call if_changed,socboot)
1015 endif
1016
1017 # x86 uses a large ROM. We fill it with 0xff, put the 16-bit stuff (including
1018 # reset vector) at the top, Intel ME descriptor at the bottom, and U-Boot in
1019 # the middle.
1020 ifneq ($(CONFIG_X86_RESET_VECTOR),)
1021 rom: u-boot.rom FORCE
1022
1023 IFDTOOL=$(objtree)/tools/ifdtool
1024 IFDTOOL_FLAGS  = -f 0:$(objtree)/u-boot.dtb
1025 IFDTOOL_FLAGS += -m 0x$(shell $(NM) u-boot |grep _dt_ucode_base_size |cut -d' ' -f1)
1026 IFDTOOL_FLAGS += -U $(CONFIG_SYS_TEXT_BASE):$(objtree)/u-boot-nodtb.bin
1027 IFDTOOL_FLAGS += -w $(CONFIG_SYS_X86_START16):$(objtree)/u-boot-x86-16bit.bin
1028 IFDTOOL_FLAGS += -C
1029
1030 ifneq ($(CONFIG_HAVE_INTEL_ME),)
1031 IFDTOOL_ME_FLAGS  = -D $(srctree)/board/$(BOARDDIR)/descriptor.bin
1032 IFDTOOL_ME_FLAGS += -i ME:$(srctree)/board/$(BOARDDIR)/me.bin
1033 endif
1034
1035 ifneq ($(CONFIG_HAVE_MRC),)
1036 IFDTOOL_FLAGS += -w $(CONFIG_X86_MRC_ADDR):$(srctree)/board/$(BOARDDIR)/mrc.bin
1037 endif
1038
1039 ifneq ($(CONFIG_HAVE_FSP),)
1040 IFDTOOL_FLAGS += -w $(CONFIG_FSP_ADDR):$(srctree)/board/$(BOARDDIR)/$(CONFIG_FSP_FILE)
1041 endif
1042
1043 ifneq ($(CONFIG_HAVE_CMC),)
1044 IFDTOOL_FLAGS += -w $(CONFIG_CMC_ADDR):$(srctree)/board/$(BOARDDIR)/$(CONFIG_CMC_FILE)
1045 endif
1046
1047 ifneq ($(CONFIG_HAVE_VGA_BIOS),)
1048 IFDTOOL_FLAGS += -w $(CONFIG_VGA_BIOS_ADDR):$(srctree)/board/$(BOARDDIR)/$(CONFIG_VGA_BIOS_FILE)
1049 endif
1050
1051 quiet_cmd_ifdtool = IFDTOOL $@
1052 cmd_ifdtool  = $(IFDTOOL) -c -r $(CONFIG_ROM_SIZE) u-boot.tmp;
1053 ifneq ($(CONFIG_HAVE_INTEL_ME),)
1054 cmd_ifdtool += $(IFDTOOL) $(IFDTOOL_ME_FLAGS) u-boot.tmp;
1055 endif
1056 cmd_ifdtool += $(IFDTOOL) $(IFDTOOL_FLAGS) u-boot.tmp;
1057 cmd_ifdtool += mv u-boot.tmp $@
1058
1059 u-boot.rom: u-boot-x86-16bit.bin u-boot.bin FORCE
1060         $(call if_changed,ifdtool)
1061
1062 OBJCOPYFLAGS_u-boot-x86-16bit.bin := -O binary -j .start16 -j .resetvec
1063 u-boot-x86-16bit.bin: u-boot FORCE
1064         $(call if_changed,objcopy)
1065 endif
1066
1067 ifneq ($(CONFIG_SUNXI),)
1068 OBJCOPYFLAGS_u-boot-sunxi-with-spl.bin = -I binary -O binary \
1069                                    --pad-to=$(CONFIG_SPL_PAD_TO) --gap-fill=0xff
1070 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img FORCE
1071         $(call if_changed,pad_cat)
1072 endif
1073
1074 ifneq ($(CONFIG_TEGRA),)
1075 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1076 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot-nodtb.bin FORCE
1077         $(call if_changed,pad_cat)
1078
1079 OBJCOPYFLAGS_u-boot-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1080 u-boot-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
1081         $(call if_changed,pad_cat)
1082
1083 u-boot-dtb-tegra.bin: u-boot-tegra.bin FORCE
1084         $(call if_changed,copy)
1085 endif
1086
1087 OBJCOPYFLAGS_u-boot-app.efi := $(OBJCOPYFLAGS_EFI)
1088 u-boot-app.efi: u-boot FORCE
1089         $(call if_changed,zobjcopy)
1090
1091 u-boot.bin.o: u-boot.bin FORCE
1092         $(call if_changed,efipayload)
1093
1094 u-boot-payload.lds: $(LDSCRIPT_EFI) FORCE
1095         $(call if_changed_dep,cpp_lds)
1096
1097 # Rule to link the EFI payload which contains a stub and a U-Boot binary
1098 quiet_cmd_u-boot_payload ?= LD      $@
1099       cmd_u-boot_payload ?= $(LD) $(LDFLAGS_EFI_PAYLOAD) -o $@ \
1100       -T u-boot-payload.lds arch/x86/cpu/call32.o \
1101       lib/efi/efi.o lib/efi/efi_stub.o u-boot.bin.o \
1102       $(addprefix arch/$(ARCH)/lib/efi/,$(EFISTUB))
1103
1104 u-boot-payload: u-boot.bin.o u-boot-payload.lds FORCE
1105         $(call if_changed,u-boot_payload)
1106
1107 OBJCOPYFLAGS_u-boot-payload.efi := $(OBJCOPYFLAGS_EFI)
1108 u-boot-payload.efi: u-boot-payload FORCE
1109         $(call if_changed,zobjcopy)
1110
1111 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
1112         $(call if_changed,cat)
1113
1114 #Add a target to create boot binary having SPL binary in PBI format
1115 #concatenated with u-boot binary. It is need by PowerPC SoC having
1116 #internal SRAM <= 512KB.
1117 MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1118                 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \
1119                 -A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE)
1120
1121 spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
1122         $(call if_changed,mkimage)
1123
1124 ifeq ($(ARCH),arm)
1125 UBOOT_BINLOAD := u-boot.img
1126 else
1127 UBOOT_BINLOAD := u-boot.bin
1128 endif
1129
1130 OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1131                           --gap-fill=0xff
1132
1133 u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE
1134         $(call if_changed,pad_cat)
1135
1136 # PPC4xx needs the SPL at the end of the image, since the reset vector
1137 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
1138 # and need to introduce a new build target with the full blown U-Boot
1139 # at the start padded up to the start of the SPL image. And then concat
1140 # the SPL image to the end.
1141
1142 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
1143         --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
1144 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
1145         $(call if_changed,pad_cat)
1146
1147 # Create a new ELF from a raw binary file.  This is useful for arm64
1148 # where static relocation needs to be performed on the raw binary,
1149 # but certain simulators only accept an ELF file (but don't do the
1150 # relocation).
1151 # FIXME refactor dts/Makefile to share target/arch detection
1152 u-boot.elf: u-boot.bin
1153         @$(OBJCOPY)  -B aarch64 -I binary -O elf64-littleaarch64 \
1154                 $< u-boot-elf.o
1155         @$(LD) u-boot-elf.o -o $@ \
1156                 --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
1157                 -Ttext=$(CONFIG_SYS_TEXT_BASE)
1158
1159 # Rule to link u-boot
1160 # May be overridden by arch/$(ARCH)/config.mk
1161 quiet_cmd_u-boot__ ?= LD      $@
1162       cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
1163       -T u-boot.lds $(u-boot-init)                             \
1164       --start-group $(u-boot-main) --end-group                 \
1165       $(PLATFORM_LIBS) -Map u-boot.map
1166
1167 quiet_cmd_smap = GEN     common/system_map.o
1168 cmd_smap = \
1169         smap=`$(call SYSTEM_MAP,u-boot) | \
1170                 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
1171         $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
1172                 -c $(srctree)/common/system_map.c -o common/system_map.o
1173
1174 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds FORCE
1175         $(call if_changed,u-boot__)
1176 ifeq ($(CONFIG_KALLSYMS),y)
1177         $(call cmd,smap)
1178         $(call cmd,u-boot__) common/system_map.o
1179 endif
1180
1181 # The actual objects are generated when descending,
1182 # make sure no implicit rule kicks in
1183 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
1184
1185 # Handle descending into subdirectories listed in $(vmlinux-dirs)
1186 # Preset locale variables to speed up the build process. Limit locale
1187 # tweaks to this spot to avoid wrong language settings when running
1188 # make menuconfig etc.
1189 # Error messages still appears in the original language
1190
1191 PHONY += $(u-boot-dirs)
1192 $(u-boot-dirs): prepare scripts
1193         $(Q)$(MAKE) $(build)=$@
1194
1195 tools: prepare
1196 # The "tools" are needed early
1197 $(filter-out tools, $(u-boot-dirs)): tools
1198 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
1199 # is "yes"), so compile examples after U-Boot is compiled.
1200 examples: $(filter-out examples, $(u-boot-dirs))
1201
1202 define filechk_uboot.release
1203         echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1204 endef
1205
1206 # Store (new) UBOOTRELEASE string in include/config/uboot.release
1207 include/config/uboot.release: include/config/auto.conf FORCE
1208         $(call filechk,uboot.release)
1209
1210
1211 # Things we need to do before we recursively start building the kernel
1212 # or the modules are listed in "prepare".
1213 # A multi level approach is used. prepareN is processed before prepareN-1.
1214 # archprepare is used in arch Makefiles and when processed asm symlink,
1215 # version.h and scripts_basic is processed / created.
1216
1217 # Listed in dependency order
1218 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1219
1220 # prepare3 is used to check if we are building in a separate output directory,
1221 # and if so do:
1222 # 1) Check that make has not been executed in the kernel src $(srctree)
1223 prepare3: include/config/uboot.release
1224 ifneq ($(KBUILD_SRC),)
1225         @$(kecho) '  Using $(srctree) as source for U-Boot'
1226         $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
1227                 echo >&2 "  $(srctree) is not clean, please run 'make mrproper'"; \
1228                 echo >&2 "  in the '$(srctree)' directory.";\
1229                 /bin/false; \
1230         fi;
1231 endif
1232
1233 # prepare2 creates a makefile if using a separate output directory
1234 prepare2: prepare3 outputmakefile
1235
1236 prepare1: prepare2 $(version_h) $(timestamp_h) \
1237                    include/config/auto.conf
1238 ifeq ($(CONFIG_HAVE_GENERIC_BOARD),)
1239 ifeq ($(CONFIG_SYS_GENERIC_BOARD),y)
1240         @echo >&2 "  Your architecture does not support generic board."
1241         @echo >&2 "  Please undefine CONFIG_SYS_GENERIC_BOARD in your board config file."
1242         @/bin/false
1243 endif
1244 endif
1245 ifeq ($(wildcard $(LDSCRIPT)),)
1246         @echo >&2 "  Could not find linker script."
1247         @/bin/false
1248 endif
1249
1250 archprepare: prepare1 scripts_basic
1251
1252 prepare0: archprepare FORCE
1253         $(Q)$(MAKE) $(build)=.
1254
1255 # All the preparing..
1256 prepare: prepare0
1257
1258 # Generate some files
1259 # ---------------------------------------------------------------------------
1260
1261 define filechk_version.h
1262         (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1263         echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1264         echo \#define CC_VERSION_STRING \"$$($(CC) --version | head -n 1)\"; \
1265         echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; )
1266 endef
1267
1268 # The SOURCE_DATE_EPOCH mechanism requires a date that behaves like GNU date.
1269 # The BSD date on the other hand behaves different and would produce errors
1270 # with the misused '-d' switch.  Respect that and search a working date with
1271 # well known pre- and suffixes for the GNU variant of date.
1272 define filechk_timestamp.h
1273         (if test -n "$${SOURCE_DATE_EPOCH}"; then \
1274                 SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \
1275                 DATE=""; \
1276                 for date in gdate date.gnu date; do \
1277                         $${date} -u -d "$${SOURCE_DATE}" >/dev/null 2>&1 && DATE="$${date}"; \
1278                 done; \
1279                 if test -n "$${DATE}"; then \
1280                         LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DATE "%b %d %C%y"'; \
1281                         LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TIME "%T"'; \
1282                         LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TZ "%z"'; \
1283                         LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1284                 else \
1285                         return 42; \
1286                 fi; \
1287         else \
1288                 LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1289                 LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \
1290                 LC_ALL=C date +'#define U_BOOT_TZ "%z"'; \
1291                 LC_ALL=C date +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1292         fi)
1293 endef
1294
1295 $(version_h): include/config/uboot.release FORCE
1296         $(call filechk,version.h)
1297
1298 $(timestamp_h): $(srctree)/Makefile FORCE
1299         $(call filechk,timestamp.h)
1300
1301 # ---------------------------------------------------------------------------
1302 quiet_cmd_cpp_lds = LDS     $@
1303 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
1304                 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
1305
1306 u-boot.lds: $(LDSCRIPT) prepare FORCE
1307         $(call if_changed_dep,cpp_lds)
1308
1309 spl/u-boot-spl.bin: spl/u-boot-spl
1310         @:
1311 spl/u-boot-spl: tools prepare $(if $(CONFIG_OF_SEPARATE),dts/dt.dtb)
1312         $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all
1313
1314 spl/sunxi-spl.bin: spl/u-boot-spl
1315         @:
1316
1317 spl/u-boot-spl.sfp: spl/u-boot-spl
1318         @:
1319
1320 spl/boot.bin: spl/u-boot-spl
1321         @:
1322
1323 tpl/u-boot-tpl.bin: tools prepare
1324         $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
1325
1326 TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
1327
1328 FIND := find
1329 FINDFLAGS := -L
1330
1331 tags ctags:
1332                 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1333                                                 -name '*.[chS]' -print`
1334                 ln -s ctags tags
1335
1336 etags:
1337                 etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1338                                                 -name '*.[chS]' -print`
1339 cscope:
1340                 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1341                                                 cscope.files
1342                 cscope -b -q -k
1343
1344 SYSTEM_MAP = \
1345                 $(NM) $1 | \
1346                 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1347                 LC_ALL=C sort
1348 System.map:     u-boot
1349                 @$(call SYSTEM_MAP,$<) > $@
1350
1351 checkdtc:
1352         @if test $(call dtc-version) -lt 0104; then \
1353                 echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
1354                 false; \
1355         fi
1356
1357 #########################################################################
1358
1359 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1360 # R_AARCH64_RELATIVE (64-bit).
1361 checkarmreloc: u-boot
1362         @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1363                 grep R_A | sort -u`"; \
1364         if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1365                  "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1366                 echo "$< contains unexpected relocations: $$RELOC"; \
1367                 false; \
1368         fi
1369
1370 env: scripts_basic
1371         $(Q)$(MAKE) $(build)=tools/$@
1372
1373 tools-only: scripts_basic $(version_h) $(timestamp_h)
1374         $(Q)$(MAKE) $(build)=tools
1375
1376 tools-all: export HOST_TOOLS_ALL=y
1377 tools-all: env tools ;
1378
1379 cross_tools: export CROSS_BUILD_TOOLS=y
1380 cross_tools: tools ;
1381
1382 .PHONY : CHANGELOG
1383 CHANGELOG:
1384         git log --no-merges U-Boot-1_1_5.. | \
1385         unexpand -a | sed -e 's/\s\s*$$//' > $@
1386
1387 include/license.h: tools/bin2header COPYING
1388         cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h
1389 #########################################################################
1390
1391 ###
1392 # Cleaning is done on three levels.
1393 # make clean     Delete most generated files
1394 #                Leave enough to build external modules
1395 # make mrproper  Delete the current configuration, and all generated files
1396 # make distclean Remove editor backup files, patch leftover files and the like
1397
1398 # Directories & files removed with 'make clean'
1399 CLEAN_DIRS  += $(MODVERDIR) \
1400                $(foreach d, spl tpl, $(patsubst %,$d/%, \
1401                         $(filter-out include, $(shell ls -1 $d 2>/dev/null))))
1402
1403 CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h \
1404                boot* u-boot* MLO* SPL System.map
1405
1406 # Directories & files removed with 'make mrproper'
1407 MRPROPER_DIRS  += include/config include/generated spl tpl \
1408                   .tmp_objdiff
1409 MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \
1410                   ctags etags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
1411
1412 # clean - Delete most, but leave enough to build external modules
1413 #
1414 clean: rm-dirs  := $(CLEAN_DIRS)
1415 clean: rm-files := $(CLEAN_FILES)
1416
1417 clean-dirs      := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
1418
1419 clean-dirs      := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
1420
1421 PHONY += $(clean-dirs) clean archclean
1422 $(clean-dirs):
1423         $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1424
1425 # TODO: Do not use *.cfgtmp
1426 clean: $(clean-dirs)
1427         $(call cmd,rmdirs)
1428         $(call cmd,rmfiles)
1429         @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1430                 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1431                 -o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
1432                 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1433                 -o -name '*.symtypes' -o -name 'modules.order' \
1434                 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1435                 -o -name '*.gcno' \) -type f -print | xargs rm -f
1436
1437 # mrproper - Delete all generated files, including .config
1438 #
1439 mrproper: rm-dirs  := $(wildcard $(MRPROPER_DIRS))
1440 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1441 mrproper-dirs      := $(addprefix _mrproper_,scripts)
1442
1443 PHONY += $(mrproper-dirs) mrproper archmrproper
1444 $(mrproper-dirs):
1445         $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1446
1447 mrproper: clean $(mrproper-dirs)
1448         $(call cmd,rmdirs)
1449         $(call cmd,rmfiles)
1450         @rm -f arch/*/include/asm/arch
1451
1452 # distclean
1453 #
1454 PHONY += distclean
1455
1456 distclean: mrproper
1457         @find $(srctree) $(RCS_FIND_IGNORE) \
1458                 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1459                 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1460                 -o -name '.*.rej' -o -name '*%' -o -name 'core' \
1461                 -o -name '*.pyc' \) \
1462                 -type f -print | xargs rm -f
1463         @rm -f boards.cfg
1464
1465 backup:
1466         F=`basename $(srctree)` ; cd .. ; \
1467         gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1468
1469 help:
1470         @echo  'Cleaning targets:'
1471         @echo  '  clean           - Remove most generated files but keep the config'
1472         @echo  '  mrproper        - Remove all generated files + config + various backup files'
1473         @echo  '  distclean       - mrproper + remove editor backup and patch files'
1474         @echo  ''
1475         @echo  'Configuration targets:'
1476         @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1477         @echo  ''
1478         @echo  'Other generic targets:'
1479         @echo  '  all             - Build all necessary images depending on configuration'
1480         @echo  '* u-boot          - Build the bare u-boot'
1481         @echo  '  dir/            - Build all files in dir and below'
1482         @echo  '  dir/file.[oisS] - Build specified target only'
1483         @echo  '  dir/file.lst    - Build specified mixed source/assembly target only'
1484         @echo  '                    (requires a recent binutils and recent build (System.map))'
1485         @echo  '  tags/ctags      - Generate ctags file for editors'
1486         @echo  '  etags           - Generate etags file for editors'
1487         @echo  '  cscope          - Generate cscope index'
1488         @echo  '  ubootrelease    - Output the release version string (use with make -s)'
1489         @echo  '  ubootversion    - Output the version stored in Makefile (use with make -s)'
1490         @echo  ''
1491         @echo  'Static analysers'
1492         @echo  '  checkstack      - Generate a list of stack hogs'
1493         @echo  ''
1494         @echo  'Documentation targets:'
1495         @$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
1496         @echo  ''
1497         @echo  '  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1498         @echo  '  make V=2   [targets] 2 => give reason for rebuild of target'
1499         @echo  '  make O=dir [targets] Locate all output files in "dir", including .config'
1500         @echo  '  make C=1   [targets] Check all c source with $$CHECK (sparse by default)'
1501         @echo  '  make C=2   [targets] Force check of all c source with $$CHECK'
1502         @echo  '  make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1503         @echo  '  make W=n   [targets] Enable extra gcc checks, n=1,2,3 where'
1504         @echo  '                1: warnings which may be relevant and do not occur too often'
1505         @echo  '                2: warnings which occur quite often but may still be relevant'
1506         @echo  '                3: more obscure warnings, can most likely be ignored'
1507         @echo  '                Multiple levels can be combined with W=12 or W=123'
1508         @echo  ''
1509         @echo  'Execute "make" or "make all" to build all targets marked with [*] '
1510         @echo  'For further info see the ./README file'
1511
1512
1513 # Documentation targets
1514 # ---------------------------------------------------------------------------
1515 %docs: scripts_basic FORCE
1516         $(Q)$(MAKE) $(build)=scripts build_docproc
1517         $(Q)$(MAKE) $(build)=doc/DocBook $@
1518
1519 # Dummies...
1520 PHONY += prepare scripts
1521 prepare: ;
1522 scripts: ;
1523
1524 endif #ifeq ($(config-targets),1)
1525 endif #ifeq ($(mixed-targets),1)
1526
1527 PHONY += checkstack ubootrelease ubootversion
1528
1529 checkstack:
1530         $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1531         $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1532
1533 ubootrelease:
1534         @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1535
1536 ubootversion:
1537         @echo $(UBOOTVERSION)
1538
1539 # Single targets
1540 # ---------------------------------------------------------------------------
1541 # Single targets are compatible with:
1542 # - build with mixed source and output
1543 # - build with separate output dir 'make O=...'
1544 # - external modules
1545 #
1546 #  target-dir => where to store outputfile
1547 #  build-dir  => directory in kernel source tree to use
1548
1549 ifeq ($(KBUILD_EXTMOD),)
1550         build-dir  = $(patsubst %/,%,$(dir $@))
1551         target-dir = $(dir $@)
1552 else
1553         zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1554         build-dir  = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1555         target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1556 endif
1557
1558 %.s: %.c prepare scripts FORCE
1559         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1560 %.i: %.c prepare scripts FORCE
1561         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1562 %.o: %.c prepare scripts FORCE
1563         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1564 %.lst: %.c prepare scripts FORCE
1565         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1566 %.s: %.S prepare scripts FORCE
1567         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1568 %.o: %.S prepare scripts FORCE
1569         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1570 %.symtypes: %.c prepare scripts FORCE
1571         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1572
1573 # Modules
1574 /: prepare scripts FORCE
1575         $(cmd_crmodverdir)
1576         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1577         $(build)=$(build-dir)
1578 %/: prepare scripts FORCE
1579         $(cmd_crmodverdir)
1580         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1581         $(build)=$(build-dir)
1582 %.ko: prepare scripts FORCE
1583         $(cmd_crmodverdir)
1584         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1)   \
1585         $(build)=$(build-dir) $(@:.ko=.o)
1586         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1587
1588 # FIXME Should go into a make.lib or something
1589 # ===========================================================================
1590
1591 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN   $(wildcard $(rm-dirs)))
1592       cmd_rmdirs = rm -rf $(rm-dirs)
1593
1594 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files)))
1595       cmd_rmfiles = rm -f $(rm-files)
1596
1597 # read all saved command lines
1598
1599 targets := $(wildcard $(sort $(targets)))
1600 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1601
1602 ifneq ($(cmd_files),)
1603   $(cmd_files): ;       # Do not try to update included dependency files
1604   include $(cmd_files)
1605 endif
1606
1607 endif   # skip-makefile
1608
1609 PHONY += FORCE
1610 FORCE:
1611
1612 # Declare the contents of the .PHONY variable as phony.  We keep that
1613 # information in a variable so we can use it in if_changed and friends.
1614 .PHONY: $(PHONY)