Makefile

   1 #
   2 # (C) Copyright 2000-2013
   3 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 #
   5 # SPDX-License-Identifier:      GPL-2.0+
   6 #
   7
   8 VERSION = 2014
   9 PATCHLEVEL = 10
  10 SUBLEVEL =
  11 EXTRAVERSION =
  12 NAME =
  13
  14 # *DOCUMENTATION*
  15 # To see a list of typical targets execute "make help"
  16 # More info can be located in ./README
  17 # Comments in this file are targeted only to the developer, do not
  18 # expect to learn how to build the kernel reading this file.
  19
  20 # Do not:
  21 # o  use make's built-in rules and variables
  22 #    (this increases performance and avoids hard-to-debug behaviour);
  23 # o  print "Entering directory ...";
  24 MAKEFLAGS += -rR --no-print-directory
  25
  26 # Avoid funny character set dependencies
  27 unexport LC_ALL
  28 LC_COLLATE=C
  29 LC_NUMERIC=C
  30 export LC_COLLATE LC_NUMERIC
  31
  32 # We are using a recursive build, so we need to do a little thinking
  33 # to get the ordering right.
  34 #
  35 # Most importantly: sub-Makefiles should only ever modify files in
  36 # their own directory. If in some directory we have a dependency on
  37 # a file in another dir (which doesn't happen often, but it's often
  38 # unavoidable when linking the built-in.o targets which finally
  39 # turn into vmlinux), we will call a sub make in that other dir, and
  40 # after that we are sure that everything which is in that other dir
  41 # is now up to date.
  42 #
  43 # The only cases where we need to modify files which have global
  44 # effects are thus separated out and done before the recursive
  45 # descending is started. They are now explicitly listed as the
  46 # prepare rule.
  47
  48 # To put more focus on warnings, be less verbose as default
  49 # Use 'make V=1' to see the full commands
  50
  51 ifeq ("$(origin V)", "command line")
  52   KBUILD_VERBOSE = $(V)
  53 endif
  54 ifndef KBUILD_VERBOSE
  55   KBUILD_VERBOSE = 0
  56 endif
  57
  58 # Call a source code checker (by default, "sparse") as part of the
  59 # C compilation.
  60 #
  61 # Use 'make C=1' to enable checking of only re-compiled files.
  62 # Use 'make C=2' to enable checking of *all* source files, regardless
  63 # of whether they are re-compiled or not.
  64 #
  65 # See the file "Documentation/sparse.txt" for more details, including
  66 # where to get the "sparse" utility.
  67
  68 ifeq ("$(origin C)", "command line")
  69   KBUILD_CHECKSRC = $(C)
  70 endif
  71 ifndef KBUILD_CHECKSRC
  72   KBUILD_CHECKSRC = 0
  73 endif
  74
  75 # Use make M=dir to specify directory of external module to build
  76 # Old syntax make ... SUBDIRS=$PWD is still supported
  77 # Setting the environment variable KBUILD_EXTMOD take precedence
  78 ifdef SUBDIRS
  79   KBUILD_EXTMOD ?= $(SUBDIRS)
  80 endif
  81
  82 ifeq ("$(origin M)", "command line")
  83   KBUILD_EXTMOD := $(M)
  84 endif
  85
  86 # kbuild supports saving output files in a separate directory.
  87 # To locate output files in a separate directory two syntaxes are supported.
  88 # In both cases the working directory must be the root of the kernel src.
  89 # 1) O=
  90 # Use "make O=dir/to/store/output/files/"
  91 #
  92 # 2) Set KBUILD_OUTPUT
  93 # Set the environment variable KBUILD_OUTPUT to point to the directory
  94 # where the output files shall be placed.
  95 # export KBUILD_OUTPUT=dir/to/store/output/files/
  96 # make
  97 #
  98 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
  99 # variable.
 100
 101
 102 # KBUILD_SRC is set on invocation of make in OBJ directory
 103 # KBUILD_SRC is not intended to be used by the regular user (for now)
 104 ifeq ($(KBUILD_SRC),)
 105
 106 # OK, Make called in directory where kernel src resides
 107 # Do we want to locate output files in a separate directory?
 108 ifeq ("$(origin O)", "command line")
 109   KBUILD_OUTPUT := $(O)
 110 endif
 111
 112 # That's our default target when none is given on the command line
 113 PHONY := _all
 114 _all:
 115
 116 # Cancel implicit rules on top Makefile
 117 $(CURDIR)/Makefile Makefile: ;
 118
 119 ifneq ($(KBUILD_OUTPUT),)
 120 # Invoke a second make in the output directory, passing relevant variables
 121 # check that the output directory actually exists
 122 saved-output := $(KBUILD_OUTPUT)
 123 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
 124                                                                 && /bin/pwd)
 125 $(if $(KBUILD_OUTPUT),, \
 126      $(error failed to create output directory "$(saved-output)"))
 127
 128 PHONY += $(MAKECMDGOALS) sub-make
 129
 130 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
 131         @:
 132
 133 sub-make: FORCE
 134         $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
 135         KBUILD_SRC=$(CURDIR) \
 136         KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
 137         $(filter-out _all sub-make,$(MAKECMDGOALS))
 138
 139 # Leave processing to above invocation of make
 140 skip-makefile := 1
 141 endif # ifneq ($(KBUILD_OUTPUT),)
 142 endif # ifeq ($(KBUILD_SRC),)
 143
 144 # We process the rest of the Makefile if this is the final invocation of make
 145 ifeq ($(skip-makefile),)
 146
 147 # If building an external module we do not care about the all: rule
 148 # but instead _all depend on modules
 149 PHONY += all
 150 ifeq ($(KBUILD_EXTMOD),)
 151 _all: all
 152 else
 153 _all: modules
 154 endif
 155
 156 srctree         := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
 157 objtree         := $(CURDIR)
 158 src             := $(srctree)
 159 obj             := $(objtree)
 160
 161 VPATH           := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
 162
 163 export srctree objtree VPATH
 164
 165 # Make sure CDPATH settings don't interfere
 166 unexport CDPATH
 167
 168 #########################################################################
 169
 170 HOSTARCH := $(shell uname -m | \
 171         sed -e s/i.86/x86/ \
 172             -e s/sun4u/sparc64/ \
 173             -e s/arm.*/arm/ \
 174             -e s/sa110/arm/ \
 175             -e s/ppc64/powerpc/ \
 176             -e s/ppc/powerpc/ \
 177             -e s/macppc/powerpc/\
 178             -e s/sh.*/sh/)
 179
 180 HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
 181             sed -e 's/\(cygwin\).*/cygwin/')
 182
 183 export  HOSTARCH HOSTOS
 184
 185 #########################################################################
 186
 187 # set default to nothing for native builds
 188 ifeq ($(HOSTARCH),$(ARCH))
 189 CROSS_COMPILE ?=
 190 endif
 191
 192 KCONFIG_CONFIG  ?= .config
 193 export KCONFIG_CONFIG
 194
 195 # SHELL used by kbuild
 196 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
 197           else if [ -x /bin/bash ]; then echo /bin/bash; \
 198           else echo sh; fi ; fi)
 199
 200 HOSTCC       = cc
 201 HOSTCXX      = c++
 202 HOSTCFLAGS   = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
 203 HOSTCXXFLAGS = -O2
 204
 205 ifeq ($(HOSTOS),cygwin)
 206 HOSTCFLAGS      += -ansi
 207 endif
 208
 209 # Mac OS X / Darwin's C preprocessor is Apple specific.  It
 210 # generates numerous errors and warnings.  We want to bypass it
 211 # and use GNU C's cpp.  To do this we pass the -traditional-cpp
 212 # option to the compiler.  Note that the -traditional-cpp flag
 213 # DOES NOT have the same semantics as GNU C's flag, all it does
 214 # is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
 215 #
 216 # Apple's linker is similar, thanks to the new 2 stage linking
 217 # multiple symbol definitions are treated as errors, hence the
 218 # -multiply_defined suppress option to turn off this error.
 219 #
 220 ifeq ($(HOSTOS),darwin)
 221 # get major and minor product version (e.g. '10' and '6' for Snow Leopard)
 222 DARWIN_MAJOR_VERSION    = $(shell sw_vers -productVersion | cut -f 1 -d '.')
 223 DARWIN_MINOR_VERSION    = $(shell sw_vers -productVersion | cut -f 2 -d '.')
 224
 225 os_x_before     = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
 226         $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
 227
 228 # Snow Leopards build environment has no longer restrictions as described above
 229 HOSTCC       = $(call os_x_before, 10, 5, "cc", "gcc")
 230 HOSTCFLAGS  += $(call os_x_before, 10, 4, "-traditional-cpp")
 231 HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
 232 endif
 233
 234 # Decide whether to build built-in, modular, or both.
 235 # Normally, just do built-in.
 236
 237 KBUILD_MODULES :=
 238 KBUILD_BUILTIN := 1
 239
 240 # If we have only "make modules", don't compile built-in objects.
 241 # When we're building modules with modversions, we need to consider
 242 # the built-in objects during the descend as well, in order to
 243 # make sure the checksums are up to date before we record them.
 244
 245 ifeq ($(MAKECMDGOALS),modules)
 246   KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
 247 endif
 248
 249 # If we have "make <whatever> modules", compile modules
 250 # in addition to whatever we do anyway.
 251 # Just "make" or "make all" shall build modules as well
 252
 253 # U-Boot does not need modules
 254 #ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
 255 #  KBUILD_MODULES := 1
 256 #endif
 257
 258 #ifeq ($(MAKECMDGOALS),)
 259 #  KBUILD_MODULES := 1
 260 #endif
 261
 262 export KBUILD_MODULES KBUILD_BUILTIN
 263 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
 264
 265 # Beautify output
 266 # ---------------------------------------------------------------------------
 267 #
 268 # Normally, we echo the whole command before executing it. By making
 269 # that echo $($(quiet)$(cmd)), we now have the possibility to set
 270 # $(quiet) to choose other forms of output instead, e.g.
 271 #
 272 #         quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
 273 #         cmd_cc_o_c       = $(CC) $(c_flags) -c -o $@ $<
 274 #
 275 # If $(quiet) is empty, the whole command will be printed.
 276 # If it is set to "quiet_", only the short version will be printed.
 277 # If it is set to "silent_", nothing will be printed at all, since
 278 # the variable $(silent_cmd_cc_o_c) doesn't exist.
 279 #
 280 # A simple variant is to prefix commands with $(Q) - that's useful
 281 # for commands that shall be hidden in non-verbose mode.
 282 #
 283 #       $(Q)ln $@ :<
 284 #
 285 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
 286 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
 287
 288 ifeq ($(KBUILD_VERBOSE),1)
 289   quiet =
 290   Q =
 291 else
 292   quiet=quiet_
 293   Q = @
 294 endif
 295
 296 # If the user is running make -s (silent mode), suppress echoing of
 297 # commands
 298
 299 ifneq ($(filter 4.%,$(MAKE_VERSION)),)  # make-4
 300 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
 301   quiet=silent_
 302 endif
 303 else                                    # make-3.8x
 304 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
 305   quiet=silent_
 306 endif
 307 endif
 308
 309 export quiet Q KBUILD_VERBOSE
 310
 311 # Look for make include files relative to root of kernel src
 312 MAKEFLAGS += --include-dir=$(srctree)
 313
 314 # We need some generic definitions (do not try to remake the file).
 315 $(srctree)/scripts/Kbuild.include: ;
 316 include $(srctree)/scripts/Kbuild.include
 317
 318 # Make variables (CC, etc...)
 319
 320 AS              = $(CROSS_COMPILE)as
 321 # Always use GNU ld
 322 ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
 323 LD              = $(CROSS_COMPILE)ld.bfd
 324 else
 325 LD              = $(CROSS_COMPILE)ld
 326 endif
 327 CC              = $(CROSS_COMPILE)gcc
 328 CPP             = $(CC) -E
 329 AR              = $(CROSS_COMPILE)ar
 330 NM              = $(CROSS_COMPILE)nm
 331 LDR             = $(CROSS_COMPILE)ldr
 332 STRIP           = $(CROSS_COMPILE)strip
 333 OBJCOPY         = $(CROSS_COMPILE)objcopy
 334 OBJDUMP         = $(CROSS_COMPILE)objdump
 335 AWK             = awk
 336 PERL            = perl
 337 PYTHON          = python
 338 DTC             = dtc
 339 CHECK           = sparse
 340
 341 CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
 342                   -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
 343
 344 KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__
 345
 346 KBUILD_CFLAGS   := -Wall -Wstrict-prototypes \
 347                    -Wno-format-security \
 348                    -fno-builtin -ffreestanding
 349 KBUILD_AFLAGS   := -D__ASSEMBLY__
 350
 351 # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
 352 UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
 353 UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
 354
 355 export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
 356 export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
 357 export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
 358 export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
 359 export MAKE AWK PERL PYTHON
 360 export HOSTCXX HOSTCXXFLAGS DTC CHECK CHECKFLAGS
 361
 362 export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
 363 export KBUILD_CFLAGS KBUILD_AFLAGS
 364
 365 # When compiling out-of-tree modules, put MODVERDIR in the module
 366 # tree rather than in the kernel tree. The kernel tree might
 367 # even be read-only.
 368 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
 369
 370 # Files to ignore in find ... statements
 371
 372 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o    \
 373                           -name CVS -o -name .pc -o -name .hg -o -name .git \) \
 374                           -prune -o
 375 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
 376                          --exclude CVS --exclude .pc --exclude .hg --exclude .git
 377
 378 # ===========================================================================
 379 # Rules shared between *config targets and build targets
 380
 381 # Basic helpers built in scripts/
 382 PHONY += scripts_basic
 383 scripts_basic:
 384         $(Q)$(MAKE) $(build)=scripts/basic
 385         $(Q)rm -f .tmp_quiet_recordmcount
 386
 387 # To avoid any implicit rule to kick in, define an empty command.
 388 scripts/basic/%: scripts_basic ;
 389
 390 PHONY += outputmakefile
 391 # outputmakefile generates a Makefile in the output directory, if using a
 392 # separate output directory. This allows convenient use of make in the
 393 # output directory.
 394 outputmakefile:
 395 ifneq ($(KBUILD_SRC),)
 396         $(Q)ln -fsn $(srctree) source
 397         $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
 398             $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
 399 endif
 400
 401 # To make sure we do not include .config for any of the *config targets
 402 # catch them early, and hand them over to scripts/kconfig/Makefile
 403 # It is allowed to specify more targets when calling make, including
 404 # mixing *config targets and build targets.
 405 # For example 'make oldconfig all'.
 406 # Detect when mixed targets is specified, and make a second invocation
 407 # of make so .config is not included in this case either (for *config).
 408
 409 version_h := include/generated/version_autogenerated.h
 410 timestamp_h := include/generated/timestamp_autogenerated.h
 411
 412 no-dot-config-targets := clean clobber mrproper distclean \
 413                          help %docs check% coccicheck \
 414                          ubootversion backup
 415
 416 config-targets := 0
 417 mixed-targets  := 0
 418 dot-config     := 1
 419
 420 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
 421         ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
 422                 dot-config := 0
 423         endif
 424 endif
 425
 426 ifeq ($(KBUILD_EXTMOD),)
 427         ifneq ($(filter config %config,$(MAKECMDGOALS)),)
 428                 config-targets := 1
 429                 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
 430                         mixed-targets := 1
 431                 endif
 432         endif
 433 endif
 434
 435 ifeq ($(mixed-targets),1)
 436 # ===========================================================================
 437 # We're called with mixed targets (*config and build targets).
 438 # Handle them one by one.
 439
 440 PHONY += $(MAKECMDGOALS) __build_one_by_one
 441
 442 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
 443         @:
 444
 445 __build_one_by_one:
 446         $(Q)set -e; \
 447         for i in $(MAKECMDGOALS); do \
 448                 $(MAKE) -f $(srctree)/Makefile $$i; \
 449         done
 450
 451 else
 452 ifeq ($(config-targets),1)
 453 # ===========================================================================
 454 # *config targets only - make sure prerequisites are updated, and descend
 455 # in scripts/kconfig to make the *config target
 456
 457 KBUILD_DEFCONFIG := sandbox_defconfig
 458 export KBUILD_DEFCONFIG KBUILD_KCONFIG
 459
 460 config: scripts_basic outputmakefile FORCE
 461         +$(Q)$(CONFIG_SHELL) $(srctree)/scripts/multiconfig.sh $@
 462
 463 %config: scripts_basic outputmakefile FORCE
 464         +$(Q)$(CONFIG_SHELL) $(srctree)/scripts/multiconfig.sh $@
 465
 466 else
 467 # ===========================================================================
 468 # Build targets only - this includes vmlinux, arch specific targets, clean
 469 # targets and others. In general all targets except *config targets.
 470
 471 ifeq ($(dot-config),1)
 472 # Read in config
 473 -include include/config/auto.conf
 474
 475 # Read in dependencies to all Kconfig* files, make sure to run
 476 # oldconfig if changes are detected.
 477 -include include/config/auto.conf.cmd
 478
 479 # To avoid any implicit rule to kick in, define an empty command
 480 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
 481
 482 # If .config is newer than include/config/auto.conf, someone tinkered
 483 # with it and forgot to run make oldconfig.
 484 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
 485 # we execute the config step to be sure to catch updated Kconfig files
 486 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
 487         $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
 488
 489 -include include/autoconf.mk
 490 -include include/autoconf.mk.dep
 491
 492 # We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf
 493 # is up-to-date. When we switch to a different board configuration, old CONFIG
 494 # macros are still remaining in include/config/auto.conf. Without the following
 495 # gimmick, wrong config.mk would be included leading nasty warnings/errors.
 496 autoconf_is_current := $(if $(wildcard $(KCONFIG_CONFIG)),$(shell find . \
 497                 -path ./include/config/auto.conf -newer $(KCONFIG_CONFIG)))
 498 ifneq ($(autoconf_is_current),)
 499 include $(srctree)/config.mk
 500 endif
 501
 502 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
 503 # that (or fail if absent).  Otherwise, search for a linker script in a
 504 # standard location.
 505
 506 ifndef LDSCRIPT
 507         #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
 508         ifdef CONFIG_SYS_LDSCRIPT
 509                 # need to strip off double quotes
 510                 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
 511         endif
 512 endif
 513
 514 # If there is no specified link script, we look in a number of places for it
 515 ifndef LDSCRIPT
 516         ifeq ($(wildcard $(LDSCRIPT)),)
 517                 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
 518         endif
 519         ifeq ($(wildcard $(LDSCRIPT)),)
 520                 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
 521         endif
 522         ifeq ($(wildcard $(LDSCRIPT)),)
 523                 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
 524         endif
 525 endif
 526
 527 else
 528 # Dummy target needed, because used as prerequisite
 529 include/config/auto.conf: ;
 530 endif # $(dot-config)
 531
 532 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
 533 KBUILD_CFLAGS   += -Os
 534 else
 535 KBUILD_CFLAGS   += -O2
 536 endif
 537
 538 ifdef BUILD_TAG
 539 KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
 540 endif
 541
 542 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
 543
 544 KBUILD_CFLAGS   += -g
 545 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
 546 # option to the assembler.
 547 KBUILD_AFLAGS   += -g
 548
 549 # Report stack usage if supported
 550 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
 551         KBUILD_CFLAGS += -fstack-usage
 552 endif
 553
 554 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
 555
 556 # turn jbsr into jsr for m68k
 557 ifeq ($(ARCH),m68k)
 558 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
 559 KBUILD_AFLAGS += -Wa,-gstabs,-S
 560 endif
 561 endif
 562
 563 # Prohibit date/time macros, which would make the build non-deterministic
 564 KBUILD_CFLAGS   += $(call cc-option,-Werror=date-time)
 565
 566 ifneq ($(CONFIG_SYS_TEXT_BASE),)
 567 KBUILD_CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
 568 endif
 569
 570 export CONFIG_SYS_TEXT_BASE
 571
 572 include $(srctree)/scripts/Makefile.extrawarn
 573
 574 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
 575 KBUILD_CPPFLAGS += $(KCPPFLAGS)
 576 KBUILD_AFLAGS += $(KAFLAGS)
 577 KBUILD_CFLAGS += $(KCFLAGS)
 578
 579 # Use UBOOTINCLUDE when you must reference the include/ directory.
 580 # Needed to be compatible with the O= option
 581 UBOOTINCLUDE    := \
 582                 -Iinclude \
 583                 $(if $(KBUILD_SRC), -I$(srctree)/include) \
 584                 -I$(srctree)/arch/$(ARCH)/include \
 585                 -include $(srctree)/include/linux/kconfig.h
 586
 587 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
 588 CHECKFLAGS     += $(NOSTDINC_FLAGS)
 589
 590 # FIX ME
 591 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
 592                                                         $(NOSTDINC_FLAGS)
 593 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
 594
 595 #########################################################################
 596 # U-Boot objects....order is important (i.e. start must be first)
 597
 598 head-y := $(CPUDIR)/start.o
 599 head-$(CONFIG_4xx) += arch/powerpc/cpu/ppc4xx/resetvec.o
 600 head-$(CONFIG_MPC85xx) += arch/powerpc/cpu/mpc85xx/resetvec.o
 601
 602 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
 603
 604 libs-y += lib/
 605 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
 606 libs-y += $(CPUDIR)/
 607 ifdef SOC
 608 libs-y += $(CPUDIR)/$(SOC)/
 609 endif
 610 libs-$(CONFIG_OF_EMBED) += dts/
 611 libs-y += arch/$(ARCH)/lib/
 612 libs-y += fs/
 613 libs-y += net/
 614 libs-y += disk/
 615 libs-y += drivers/
 616 libs-y += drivers/dma/
 617 libs-y += drivers/gpio/
 618 libs-y += drivers/i2c/
 619 libs-y += drivers/mmc/
 620 libs-y += drivers/mtd/
 621 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
 622 libs-y += drivers/mtd/onenand/
 623 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
 624 libs-y += drivers/mtd/spi/
 625 libs-y += drivers/net/
 626 libs-y += drivers/net/phy/
 627 libs-y += drivers/pci/
 628 libs-y += drivers/power/ \
 629         drivers/power/fuel_gauge/ \
 630         drivers/power/mfd/ \
 631         drivers/power/pmic/ \
 632         drivers/power/battery/
 633 libs-y += drivers/spi/
 634 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
 635 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
 636 libs-y += drivers/serial/
 637 libs-y += drivers/usb/eth/
 638 libs-y += drivers/usb/gadget/
 639 libs-y += drivers/usb/host/
 640 libs-y += drivers/usb/musb/
 641 libs-y += drivers/usb/musb-new/
 642 libs-y += drivers/usb/phy/
 643 libs-y += drivers/usb/ulpi/
 644 libs-y += common/
 645 libs-y += lib/libfdt/
 646 libs-$(CONFIG_API) += api/
 647 libs-$(CONFIG_HAS_POST) += post/
 648 libs-y += test/
 649 libs-y += test/dm/
 650
 651 ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35 mxs vf610))
 652 libs-y += arch/$(ARCH)/imx-common/
 653 endif
 654
 655 libs-$(CONFIG_ARM) += arch/arm/cpu/
 656 libs-$(CONFIG_PPC) += arch/powerpc/cpu/
 657
 658 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
 659
 660 libs-y := $(sort $(libs-y))
 661
 662 u-boot-dirs     := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
 663
 664 u-boot-alldirs  := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
 665
 666 libs-y          := $(patsubst %/, %/built-in.o, $(libs-y))
 667
 668 u-boot-init := $(head-y)
 669 u-boot-main := $(libs-y)
 670
 671
 672 # Add GCC lib
 673 ifdef CONFIG_USE_PRIVATE_LIBGCC
 674 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
 675 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
 676 else
 677 PLATFORM_LIBGCC = -L $(CONFIG_USE_PRIVATE_LIBGCC) -lgcc
 678 endif
 679 else
 680 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
 681 endif
 682 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
 683 export PLATFORM_LIBS
 684 export PLATFORM_LIBGCC
 685
 686 # Special flags for CPP when processing the linker script.
 687 # Pass the version down so we can handle backwards compatibility
 688 # on the fly.
 689 LDPPFLAGS += \
 690         -include $(srctree)/include/u-boot/u-boot.lds.h \
 691         -DCPUDIR=$(CPUDIR) \
 692         $(shell $(LD) --version | \
 693           sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
 694
 695 #########################################################################
 696 #########################################################################
 697
 698 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
 699 BOARD_SIZE_CHECK = \
 700         @actual=`wc -c $@ | awk '{print $$1}'`; \
 701         limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
 702         if test $$actual -gt $$limit; then \
 703                 echo "$@ exceeds file size limit:" >&2 ; \
 704                 echo "  limit:  $$limit bytes" >&2 ; \
 705                 echo "  actual: $$actual bytes" >&2 ; \
 706                 echo "  excess: $$((actual - limit)) bytes" >&2; \
 707                 exit 1; \
 708         fi
 709 else
 710 BOARD_SIZE_CHECK =
 711 endif
 712
 713 # Statically apply RELA-style relocations (currently arm64 only)
 714 ifneq ($(CONFIG_STATIC_RELA),)
 715 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
 716 DO_STATIC_RELA = \
 717         start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
 718         end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
 719         tools/relocate-rela $(2) $(3) $$start $$end
 720 else
 721 DO_STATIC_RELA =
 722 endif
 723
 724 # Always append ALL so that arch config.mk's can add custom ones
 725 ALL-y += u-boot.srec u-boot.bin System.map binary_size_check
 726
 727 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
 728 ifeq ($(CONFIG_SPL_FSL_PBL),y)
 729 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
 730 else
 731 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
 732 endif
 733 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
 734 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
 735 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
 736 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb u-boot-dtb.bin
 737 ifeq ($(CONFIG_SPL_FRAMEWORK),y)
 738 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
 739 endif
 740 ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
 741 ifneq ($(CONFIG_SPL_TARGET),)
 742 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
 743 endif
 744 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
 745
 746 # enable combined SPL/u-boot/dtb rules for tegra
 747 ifneq ($(CONFIG_TEGRA),)
 748 ifeq ($(CONFIG_SPL),y)
 749 ifeq ($(CONFIG_OF_SEPARATE),y)
 750 ALL-y += u-boot-dtb-tegra.bin
 751 else
 752 ALL-y += u-boot-nodtb-tegra.bin
 753 endif
 754 endif
 755 endif
 756
 757 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
 758 ifneq ($(CONFIG_SYS_TEXT_BASE),)
 759 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
 760 endif
 761
 762 quiet_cmd_objcopy = OBJCOPY $@
 763 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
 764
 765 quiet_cmd_mkimage = MKIMAGE $@
 766 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
 767         $(if $(KBUILD_VERBOSE:1=), >/dev/null)
 768
 769 quiet_cmd_cat = CAT     $@
 770 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
 771
 772 append = cat $(filter-out $< $(PHONY), $^) >> $@
 773
 774 quiet_cmd_pad_cat = CAT     $@
 775 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
 776
 777 all:            $(ALL-y)
 778
 779 PHONY += dtbs
 780 dtbs dts/dt.dtb: checkdtc u-boot
 781         $(Q)$(MAKE) $(build)=dts dtbs
 782
 783 u-boot-dtb.bin: u-boot.bin dts/dt.dtb FORCE
 784         $(call if_changed,cat)
 785
 786 %.imx: %.bin
 787         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 788
 789 quiet_cmd_copy = COPY    $@
 790       cmd_copy = cp $< $@
 791
 792 u-boot.dtb: dts/dt.dtb
 793         $(call cmd,copy)
 794
 795 OBJCOPYFLAGS_u-boot.hex := -O ihex
 796
 797 OBJCOPYFLAGS_u-boot.srec := -O srec
 798
 799 u-boot.hex u-boot.srec: u-boot FORCE
 800         $(call if_changed,objcopy)
 801
 802 OBJCOPYFLAGS_u-boot.bin := -O binary
 803
 804 binary_size_check: u-boot.bin FORCE
 805         @file_size=$(shell wc -c u-boot.bin | awk '{print $$1}') ; \
 806         map_size=$(shell cat u-boot.map | \
 807                 awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
 808                 | sed 's/0X//g' \
 809                 | bc); \
 810         if [ "" != "$$map_size" ]; then \
 811                 if test $$map_size -ne $$file_size; then \
 812                         echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
 813                         echo "  but u-boot.bin shows $$file_size" >&2 ; \
 814                         exit 1; \
 815                 fi \
 816         fi
 817
 818 u-boot.bin: u-boot FORCE
 819         $(call if_changed,objcopy)
 820         $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
 821         $(BOARD_SIZE_CHECK)
 822
 823 u-boot.ldr:     u-boot
 824                 $(CREATE_LDR_ENV)
 825                 $(LDR) -T $(CONFIG_BFIN_CPU) -c $@ $< $(LDR_FLAGS)
 826                 $(BOARD_SIZE_CHECK)
 827
 828 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
 829
 830 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
 831
 832 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
 833         $(call if_changed,objcopy)
 834
 835 #
 836 # U-Boot entry point, needed for booting of full-blown U-Boot
 837 # from the SPL U-Boot version.
 838 #
 839 ifndef CONFIG_SYS_UBOOT_START
 840 CONFIG_SYS_UBOOT_START := 0
 841 endif
 842
 843 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
 844         -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
 845         -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
 846
 847 MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
 848         -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
 849
 850 MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
 851                 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
 852
 853 u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE
 854         $(call if_changed,mkimage)
 855
 856 MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
 857
 858 u-boot-dtb.img: u-boot-dtb.bin FORCE
 859         $(call if_changed,mkimage)
 860
 861 u-boot.sha1:    u-boot.bin
 862                 tools/ubsha1 u-boot.bin
 863
 864 u-boot.dis:     u-boot
 865                 $(OBJDUMP) -d $< > $@
 866
 867 ifdef CONFIG_TPL
 868 SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
 869 else
 870 SPL_PAYLOAD := u-boot.bin
 871 endif
 872
 873 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
 874                                    --pad-to=$(CONFIG_SPL_PAD_TO)
 875 u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
 876         $(call if_changed,pad_cat)
 877
 878 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
 879                                    --pad-to=$(CONFIG_TPL_PAD_TO)
 880 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
 881         $(call if_changed,pad_cat)
 882
 883 SPL: spl/u-boot-spl.bin FORCE
 884         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 885
 886 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
 887         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 888
 889 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
 890
 891 u-boot.ubl: u-boot-with-spl.bin FORCE
 892         $(call if_changed,mkimage)
 893
 894 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
 895         $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
 896         -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
 897 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
 898         $(call if_changed,mkimage)
 899
 900 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
 901 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
 902         $(call if_changed,pad_cat)
 903
 904 u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
 905         $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
 906 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
 907         $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
 908
 909 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
 910 # Both images are created using mkimage (crc etc), so that the ROM
 911 # bootloader can check its integrity. Padding needs to be done to the
 912 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
 913 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
 914 # The resulting image containing both U-Boot images is called u-boot.spr
 915 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
 916         -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
 917 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
 918         $(call if_changed,mkimage)
 919
 920 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
 921                           --gap-fill=0xff
 922 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
 923         $(call if_changed,pad_cat)
 924
 925 MKIMAGEFLAGS_u-boot-spl.gph = -A $(ARCH) -T gpimage -C none \
 926         -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n SPL
 927 spl/u-boot-spl.gph: spl/u-boot-spl.bin FORCE
 928         $(call if_changed,mkimage)
 929
 930 OBJCOPYFLAGS_u-boot-spi.gph = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
 931                           --gap-fill=0
 932 u-boot-spi.gph: spl/u-boot-spl.gph u-boot.img FORCE
 933         $(call if_changed,pad_cat)
 934
 935 MKIMAGEFLAGS_u-boot-nand.gph = -A $(ARCH) -T gpimage -C none \
 936         -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) -n U-Boot
 937 u-boot-nand.gph: u-boot.bin FORCE
 938         $(call if_changed,mkimage)
 939         @dd if=/dev/zero bs=8 count=1 2>/dev/null >> $@
 940
 941 ifneq ($(CONFIG_SUNXI),)
 942 OBJCOPYFLAGS_u-boot-sunxi-with-spl.bin = -I binary -O binary \
 943                                    --pad-to=$(CONFIG_SPL_PAD_TO) --gap-fill=0xff
 944 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img FORCE
 945         $(call if_changed,pad_cat)
 946 endif
 947
 948 ifneq ($(CONFIG_TEGRA),)
 949 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
 950 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
 951         $(call if_changed,pad_cat)
 952
 953 ifeq ($(CONFIG_OF_SEPARATE),y)
 954 u-boot-dtb-tegra.bin: u-boot-nodtb-tegra.bin dts/dt.dtb FORCE
 955         $(call if_changed,cat)
 956 endif
 957 endif
 958
 959 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
 960         $(call if_changed,cat)
 961
 962 #Add a target to create boot binary having SPL binary in PBI format
 963 #concatenated with u-boot binary. It is need by PowerPC SoC having
 964 #internal SRAM <= 512KB.
 965 MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
 966                 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
 967
 968 spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
 969         $(call if_changed,mkimage)
 970
 971 OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
 972                           --gap-fill=0xff
 973
 974 u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl u-boot.bin FORCE
 975         $(call if_changed,pad_cat)
 976
 977 # PPC4xx needs the SPL at the end of the image, since the reset vector
 978 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
 979 # and need to introduce a new build target with the full blown U-Boot
 980 # at the start padded up to the start of the SPL image. And then concat
 981 # the SPL image to the end.
 982
 983 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
 984         --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
 985 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
 986         $(call if_changed,pad_cat)
 987
 988 # Create a new ELF from a raw binary file.  This is useful for arm64
 989 # where static relocation needs to be performed on the raw binary,
 990 # but certain simulators only accept an ELF file (but don't do the
 991 # relocation).
 992 # FIXME refactor dts/Makefile to share target/arch detection
 993 u-boot.elf: u-boot.bin
 994         @$(OBJCOPY)  -B aarch64 -I binary -O elf64-littleaarch64 \
 995                 $< u-boot-elf.o
 996         @$(LD) u-boot-elf.o -o $@ \
 997                 --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
 998                 -Ttext=$(CONFIG_SYS_TEXT_BASE)
 999
1000 # Rule to link u-boot
1001 # May be overridden by arch/$(ARCH)/config.mk
1002 quiet_cmd_u-boot__ ?= LD      $@
1003       cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
1004       -T u-boot.lds $(u-boot-init)                             \
1005       --start-group $(u-boot-main) --end-group                 \
1006       $(PLATFORM_LIBS) -Map u-boot.map
1007
1008 quiet_cmd_smap = GEN     common/system_map.o
1009 cmd_smap = \
1010         smap=`$(call SYSTEM_MAP,u-boot) | \
1011                 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
1012         $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
1013                 -c $(srctree)/common/system_map.c -o common/system_map.o
1014
1015 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds
1016         $(call if_changed,u-boot__)
1017 ifeq ($(CONFIG_KALLSYMS),y)
1018         $(call cmd,smap)
1019         $(call cmd,u-boot__) common/system_map.o
1020 endif
1021
1022 # The actual objects are generated when descending,
1023 # make sure no implicit rule kicks in
1024 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
1025
1026 # Handle descending into subdirectories listed in $(vmlinux-dirs)
1027 # Preset locale variables to speed up the build process. Limit locale
1028 # tweaks to this spot to avoid wrong language settings when running
1029 # make menuconfig etc.
1030 # Error messages still appears in the original language
1031
1032 PHONY += $(u-boot-dirs)
1033 $(u-boot-dirs): prepare scripts
1034         $(Q)$(MAKE) $(build)=$@
1035
1036 tools: prepare
1037 # The "tools" are needed early
1038 $(filter-out tools, $(u-boot-dirs)): tools
1039 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
1040 # is "yes"), so compile examples after U-Boot is compiled.
1041 examples: $(filter-out examples, $(u-boot-dirs))
1042
1043 define filechk_uboot.release
1044         echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1045 endef
1046
1047 # Store (new) UBOOTRELEASE string in include/config/uboot.release
1048 include/config/uboot.release: include/config/auto.conf FORCE
1049         $(call filechk,uboot.release)
1050
1051
1052 # Things we need to do before we recursively start building the kernel
1053 # or the modules are listed in "prepare".
1054 # A multi level approach is used. prepareN is processed before prepareN-1.
1055 # archprepare is used in arch Makefiles and when processed asm symlink,
1056 # version.h and scripts_basic is processed / created.
1057
1058 # Listed in dependency order
1059 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1060
1061 # prepare3 is used to check if we are building in a separate output directory,
1062 # and if so do:
1063 # 1) Check that make has not been executed in the kernel src $(srctree)
1064 prepare3: include/config/uboot.release
1065 ifneq ($(KBUILD_SRC),)
1066         @$(kecho) '  Using $(srctree) as source for U-Boot'
1067         $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
1068                 echo >&2 "  $(srctree) is not clean, please run 'make mrproper'"; \
1069                 echo >&2 "  in the '$(srctree)' directory.";\
1070                 /bin/false; \
1071         fi;
1072 endif
1073
1074 # prepare2 creates a makefile if using a separate output directory
1075 prepare2: prepare3 outputmakefile
1076
1077 prepare1: prepare2 $(version_h) $(timestamp_h) \
1078                    include/config/auto.conf
1079 ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
1080 ifeq ($(CONFIG_SYS_GENERIC_BOARD),y)
1081         @echo >&2 "  Your architecture does not support generic board."
1082         @echo >&2 "  Please undefine CONFIG_SYS_GENERIC_BOARD in your board config file."
1083         @/bin/false
1084 endif
1085 endif
1086 ifeq ($(wildcard $(LDSCRIPT)),)
1087         @echo >&2 "  Could not find linker script."
1088         @/bin/false
1089 endif
1090
1091 archprepare: prepare1 scripts_basic
1092
1093 prepare0: archprepare FORCE
1094         $(Q)$(MAKE) $(build)=.
1095
1096 # All the preparing..
1097 prepare: prepare0
1098
1099 # Generate some files
1100 # ---------------------------------------------------------------------------
1101
1102 define filechk_version.h
1103         (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1104         echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1105         echo \#define CC_VERSION_STRING \"$$($(CC) --version | head -n 1)\"; \
1106         echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; )
1107 endef
1108
1109 define filechk_timestamp.h
1110         (LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1111         LC_ALL=C date +'#define U_BOOT_TIME "%T"')
1112 endef
1113
1114 $(version_h): include/config/uboot.release FORCE
1115         $(call filechk,version.h)
1116
1117 $(timestamp_h): $(srctree)/Makefile FORCE
1118         $(call filechk,timestamp.h)
1119
1120 # ---------------------------------------------------------------------------
1121
1122 PHONY += depend dep
1123 depend dep:
1124         @echo '*** Warning: make $@ is unnecessary now.'
1125
1126 # ---------------------------------------------------------------------------
1127 quiet_cmd_cpp_lds = LDS     $@
1128 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
1129                 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
1130
1131 u-boot.lds: $(LDSCRIPT) prepare FORCE
1132         $(call if_changed_dep,cpp_lds)
1133
1134 spl/u-boot-spl.bin: spl/u-boot-spl
1135         @:
1136 spl/u-boot-spl: tools prepare
1137         $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all
1138
1139 spl/sunxi-spl.bin: spl/u-boot-spl
1140         @:
1141
1142 tpl/u-boot-tpl.bin: tools prepare
1143         $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
1144
1145 TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
1146
1147 FIND := find
1148 FINDFLAGS := -L
1149
1150 tags ctags:
1151                 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1152                                                 -name '*.[chS]' -print`
1153
1154 etags:
1155                 etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1156                                                 -name '*.[chS]' -print`
1157 cscope:
1158                 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1159                                                 cscope.files
1160                 cscope -b -q -k
1161
1162 SYSTEM_MAP = \
1163                 $(NM) $1 | \
1164                 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1165                 LC_ALL=C sort
1166 System.map:     u-boot
1167                 @$(call SYSTEM_MAP,$<) > $@
1168
1169 checkdtc:
1170         @if test $(call dtc-version) -lt 0104; then \
1171                 echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
1172                 false; \
1173         fi
1174
1175 #########################################################################
1176
1177 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1178 # R_AARCH64_RELATIVE (64-bit).
1179 checkarmreloc: u-boot
1180         @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1181                 grep R_A | sort -u`"; \
1182         if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1183                  "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1184                 echo "$< contains unexpected relocations: $$RELOC"; \
1185                 false; \
1186         fi
1187
1188 env: scripts_basic
1189         $(Q)$(MAKE) $(build)=tools/$@
1190
1191 tools-only: scripts_basic $(version_h) $(timestamp_h)
1192         $(Q)$(MAKE) $(build)=tools
1193
1194 tools-all: export HOST_TOOLS_ALL=y
1195 tools-all: env tools ;
1196
1197 cross_tools: export CROSS_BUILD_TOOLS=y
1198 cross_tools: tools ;
1199
1200 .PHONY : CHANGELOG
1201 CHANGELOG:
1202         git log --no-merges U-Boot-1_1_5.. | \
1203         unexpand -a | sed -e 's/\s\s*$$//' > $@
1204
1205 include/license.h: tools/bin2header COPYING
1206         cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h
1207 #########################################################################
1208
1209 ###
1210 # Cleaning is done on three levels.
1211 # make clean     Delete most generated files
1212 #                Leave enough to build external modules
1213 # make mrproper  Delete the current configuration, and all generated files
1214 # make distclean Remove editor backup files, patch leftover files and the like
1215
1216 # Directories & files removed with 'make clean'
1217 CLEAN_DIRS  += $(MODVERDIR)
1218 CLEAN_FILES += u-boot.lds include/bmp_logo.h include/bmp_logo_data.h
1219
1220 # Directories & files removed with 'make clobber'
1221 CLOBBER_DIRS  += $(foreach d, spl tpl, $(patsubst %,$d/%, \
1222                         $(filter-out include, $(shell ls -1 $d 2>/dev/null))))
1223 CLOBBER_FILES += u-boot* MLO* SPL System.map
1224
1225 # Directories & files removed with 'make mrproper'
1226 MRPROPER_DIRS  += include/config include/generated spl tpl \
1227                   .tmp_objdiff
1228 MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \
1229                   ctags etags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
1230
1231 # clean - Delete most, but leave enough to build external modules
1232 #
1233 clean: rm-dirs  := $(CLEAN_DIRS)
1234 clean: rm-files := $(CLEAN_FILES)
1235
1236 clean-dirs      := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
1237
1238 clean-dirs      := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
1239
1240 PHONY += $(clean-dirs) clean archclean
1241 $(clean-dirs):
1242         $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1243
1244 # TODO: Do not use *.cfgtmp
1245 clean: $(clean-dirs)
1246         $(call cmd,rmdirs)
1247         $(call cmd,rmfiles)
1248         @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1249                 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1250                 -o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
1251                 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1252                 -o -name '*.symtypes' -o -name 'modules.order' \
1253                 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1254                 -o -name '*.gcno' \) -type f -print | xargs rm -f
1255
1256 # clobber
1257 #
1258 clobber: rm-dirs  := $(CLOBBER_DIRS)
1259 clobber: rm-files := $(CLOBBER_FILES)
1260
1261 PHONY += clobber
1262
1263 clobber: clean
1264         $(call cmd,rmdirs)
1265         $(call cmd,rmfiles)
1266
1267 # mrproper - Delete all generated files, including .config
1268 #
1269 mrproper: rm-dirs  := $(wildcard $(MRPROPER_DIRS))
1270 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1271 mrproper-dirs      := $(addprefix _mrproper_,scripts)
1272
1273 PHONY += $(mrproper-dirs) mrproper archmrproper
1274 $(mrproper-dirs):
1275         $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1276
1277 mrproper: clobber $(mrproper-dirs)
1278         $(call cmd,rmdirs)
1279         $(call cmd,rmfiles)
1280         @rm -f arch/*/include/asm/arch
1281
1282 # distclean
1283 #
1284 PHONY += distclean
1285
1286 distclean: mrproper
1287         @find $(srctree) $(RCS_FIND_IGNORE) \
1288                 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1289                 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1290                 -o -name '.*.rej' -o -name '*%' -o -name 'core' \
1291                 -o -name '*.pyc' \) \
1292                 -type f -print | xargs rm -f
1293         @rm -f boards.cfg
1294
1295 backup:
1296         F=`basename $(srctree)` ; cd .. ; \
1297         gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1298
1299 help:
1300         @echo  'Cleaning targets:'
1301         @echo  '  clean           - Remove most generated files but keep the config and'
1302         @echo  '                    necessities for testing u-boot'
1303         @echo  '  clobber         - Remove most generated files but keep the config'
1304         @echo  '  mrproper        - Remove all generated files + config + various backup files'
1305         @echo  '  distclean       - mrproper + remove editor backup and patch files'
1306         @echo  ''
1307         @echo  'Configuration targets:'
1308         @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1309         @echo  ''
1310         @echo  'Other generic targets:'
1311         @echo  '  all             - Build all necessary images depending on configuration'
1312         @echo  '  u-boot          - Build the bare u-boot'
1313         @echo  '  dir/            - Build all files in dir and below'
1314         @echo  '  dir/file.[oisS] - Build specified target only'
1315         @echo  '  dir/file.lst    - Build specified mixed source/assembly target only'
1316         @echo  '                    (requires a recent binutils and recent build (System.map))'
1317         @echo  '  tags/ctags      - Generate ctags file for editors'
1318         @echo  '  etags           - Generate etags file for editors'
1319         @echo  '  cscope          - Generate cscope index'
1320         @echo  '  ubootrelease    - Output the release version string'
1321         @echo  '  ubootversion    - Output the version stored in Makefile'
1322         @echo  ''
1323         @echo  'Static analysers'
1324         @echo  '  checkstack      - Generate a list of stack hogs'
1325         @echo  ''
1326         @echo  'Documentation targets:'
1327         @$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
1328         @echo  ''
1329         @echo  '  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1330         @echo  '  make V=2   [targets] 2 => give reason for rebuild of target'
1331         @echo  '  make O=dir [targets] Locate all output files in "dir", including .config'
1332         @echo  '  make C=1   [targets] Check all c source with $$CHECK (sparse by default)'
1333         @echo  '  make C=2   [targets] Force check of all c source with $$CHECK'
1334         @echo  '  make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1335         @echo  '  make W=n   [targets] Enable extra gcc checks, n=1,2,3 where'
1336         @echo  '                1: warnings which may be relevant and do not occur too often'
1337         @echo  '                2: warnings which occur quite often but may still be relevant'
1338         @echo  '                3: more obscure warnings, can most likely be ignored'
1339         @echo  '                Multiple levels can be combined with W=12 or W=123'
1340         @echo  ''
1341         @echo  'Execute "make" or "make all" to build all targets marked with [*] '
1342         @echo  'For further info see the ./README file'
1343
1344
1345 # Documentation targets
1346 # ---------------------------------------------------------------------------
1347 %docs: scripts_basic FORCE
1348         $(Q)$(MAKE) $(build)=scripts build_docproc
1349         $(Q)$(MAKE) $(build)=doc/DocBook $@
1350
1351 # Dummies...
1352 PHONY += prepare scripts
1353 prepare: ;
1354 scripts: ;
1355
1356 endif #ifeq ($(config-targets),1)
1357 endif #ifeq ($(mixed-targets),1)
1358
1359 PHONY += checkstack ubootrelease ubootversion
1360
1361 checkstack:
1362         $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1363         $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1364
1365 ubootrelease:
1366         @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1367
1368 ubootversion:
1369         @echo $(UBOOTVERSION)
1370
1371 # Single targets
1372 # ---------------------------------------------------------------------------
1373 # Single targets are compatible with:
1374 # - build with mixed source and output
1375 # - build with separate output dir 'make O=...'
1376 # - external modules
1377 #
1378 #  target-dir => where to store outputfile
1379 #  build-dir  => directory in kernel source tree to use
1380
1381 ifeq ($(KBUILD_EXTMOD),)
1382         build-dir  = $(patsubst %/,%,$(dir $@))
1383         target-dir = $(dir $@)
1384 else
1385         zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1386         build-dir  = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1387         target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1388 endif
1389
1390 %.s: %.c prepare scripts FORCE
1391         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1392 %.i: %.c prepare scripts FORCE
1393         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1394 %.o: %.c prepare scripts FORCE
1395         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1396 %.lst: %.c prepare scripts FORCE
1397         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1398 %.s: %.S prepare scripts FORCE
1399         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1400 %.o: %.S prepare scripts FORCE
1401         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1402 %.symtypes: %.c prepare scripts FORCE
1403         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1404
1405 # Modules
1406 /: prepare scripts FORCE
1407         $(cmd_crmodverdir)
1408         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1409         $(build)=$(build-dir)
1410 %/: prepare scripts FORCE
1411         $(cmd_crmodverdir)
1412         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1413         $(build)=$(build-dir)
1414 %.ko: prepare scripts FORCE
1415         $(cmd_crmodverdir)
1416         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1)   \
1417         $(build)=$(build-dir) $(@:.ko=.o)
1418         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1419
1420 # FIXME Should go into a make.lib or something
1421 # ===========================================================================
1422
1423 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN   $(wildcard $(rm-dirs)))
1424       cmd_rmdirs = rm -rf $(rm-dirs)
1425
1426 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files)))
1427       cmd_rmfiles = rm -f $(rm-files)
1428
1429 # read all saved command lines
1430
1431 targets := $(wildcard $(sort $(targets)))
1432 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1433
1434 ifneq ($(cmd_files),)
1435   $(cmd_files): ;       # Do not try to update included dependency files
1436   include $(cmd_files)
1437 endif
1438
1439 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1440 # Usage:
1441 # $(Q)$(MAKE) $(clean)=dir
1442 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1443
1444 endif   # skip-makefile
1445
1446 PHONY += FORCE
1447 FORCE:
1448
1449 # Declare the contents of the .PHONY variable as phony.  We keep that
1450 # information in a variable so we can use it in if_changed and friends.
1451 .PHONY: $(PHONY)