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 = -rc1
  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       = gcc
 201 HOSTCXX      = g++
 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__
 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) $(PATCHLEVEL)
 399 endif
 400
 401 # To make sure we do not include .config for any of the *config targets
 402 # catch them early, and hand them over to scripts/kconfig/Makefile
 403 # It is allowed to specify more targets when calling make, including
 404 # mixing *config targets and build targets.
 405 # For example 'make oldconfig all'.
 406 # Detect when mixed targets is specified, and make a second invocation
 407 # of make so .config is not included in this case either (for *config).
 408
 409 version_h := include/generated/version_autogenerated.h
 410 timestamp_h := include/generated/timestamp_autogenerated.h
 411
 412 no-dot-config-targets := clean clobber mrproper distclean \
 413                          help %docs check% coccicheck \
 414                          ubootversion backup tools-only
 415
 416 config-targets := 0
 417 mixed-targets  := 0
 418 dot-config     := 1
 419
 420 ifneq ($(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 ($(config-targets),1)
 453 # ===========================================================================
 454 # *config targets only - make sure prerequisites are updated, and descend
 455 # in scripts/kconfig to make the *config target
 456
 457 KBUILD_DEFCONFIG := sandbox_defconfig
 458 export KBUILD_DEFCONFIG KBUILD_KCONFIG
 459
 460 config: scripts_basic outputmakefile FORCE
 461         (Q)$(MAKE) $(build)=scripts/kconfig $@
 462
 463 %config: scripts_basic outputmakefile FORCE
 464         +$(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 # $(dot-config)
 531
 532 KBUILD_CFLAGS += -Os #-fomit-frame-pointer
 533
 534 ifdef BUILD_TAG
 535 KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
 536 endif
 537
 538 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
 539
 540 KBUILD_CFLAGS   += -g
 541 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
 542 # option to the assembler.
 543 KBUILD_AFLAGS   += -g
 544
 545 # Report stack usage if supported
 546 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
 547         KBUILD_CFLAGS += -fstack-usage
 548 endif
 549
 550 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
 551
 552 # turn jbsr into jsr for m68k
 553 ifeq ($(ARCH),m68k)
 554 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
 555 KBUILD_AFLAGS += -Wa,-gstabs,-S
 556 endif
 557 endif
 558
 559 # Prohibit date/time macros, which would make the build non-deterministic
 560 KBUILD_CFLAGS   += $(call cc-option,-Werror=date-time)
 561
 562 ifneq ($(CONFIG_SYS_TEXT_BASE),)
 563 KBUILD_CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
 564 endif
 565
 566 export CONFIG_SYS_TEXT_BASE
 567
 568 include $(srctree)/scripts/Makefile.extrawarn
 569
 570 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
 571 KBUILD_CPPFLAGS += $(KCPPFLAGS)
 572 KBUILD_AFLAGS += $(KAFLAGS)
 573 KBUILD_CFLAGS += $(KCFLAGS)
 574
 575 # Use UBOOTINCLUDE when you must reference the include/ directory.
 576 # Needed to be compatible with the O= option
 577 UBOOTINCLUDE    := \
 578                 -Iinclude \
 579                 $(if $(KBUILD_SRC), -I$(srctree)/include) \
 580                 -I$(srctree)/arch/$(ARCH)/include \
 581                 -include $(srctree)/include/linux/kconfig.h
 582
 583 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
 584 CHECKFLAGS     += $(NOSTDINC_FLAGS)
 585
 586 # FIX ME
 587 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
 588                                                         $(NOSTDINC_FLAGS)
 589 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
 590
 591 #########################################################################
 592 # U-Boot objects....order is important (i.e. start must be first)
 593
 594 head-y := $(CPUDIR)/start.o
 595 head-$(CONFIG_4xx) += arch/powerpc/cpu/ppc4xx/resetvec.o
 596 head-$(CONFIG_MPC85xx) += arch/powerpc/cpu/mpc85xx/resetvec.o
 597
 598 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
 599
 600 libs-y += lib/
 601 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
 602 libs-y += $(CPUDIR)/
 603 ifdef SOC
 604 libs-y += $(CPUDIR)/$(SOC)/
 605 endif
 606 libs-$(CONFIG_OF_EMBED) += dts/
 607 libs-y += arch/$(ARCH)/lib/
 608 libs-y += fs/
 609 libs-y += net/
 610 libs-y += disk/
 611 libs-y += drivers/
 612 libs-$(CONFIG_DM) += drivers/core/
 613 libs-y += drivers/dma/
 614 libs-y += drivers/gpio/
 615 libs-y += drivers/i2c/
 616 libs-y += drivers/input/
 617 libs-y += drivers/mmc/
 618 libs-y += drivers/mtd/
 619 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
 620 libs-y += drivers/mtd/onenand/
 621 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
 622 libs-y += drivers/mtd/spi/
 623 libs-y += drivers/net/
 624 libs-y += drivers/net/phy/
 625 libs-y += drivers/pci/
 626 libs-y += drivers/power/ \
 627         drivers/power/fuel_gauge/ \
 628         drivers/power/mfd/ \
 629         drivers/power/pmic/ \
 630         drivers/power/battery/
 631 libs-y += drivers/spi/
 632 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
 633 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
 634 libs-y += drivers/serial/
 635 libs-y += drivers/usb/eth/
 636 libs-y += drivers/usb/gadget/
 637 libs-y += drivers/usb/host/
 638 libs-y += drivers/usb/musb/
 639 libs-y += drivers/usb/musb-new/
 640 libs-y += drivers/usb/phy/
 641 libs-y += drivers/usb/ulpi/
 642 libs-y += common/
 643 libs-y += lib/libfdt/
 644 libs-$(CONFIG_API) += api/
 645 libs-$(CONFIG_HAS_POST) += post/
 646 libs-y += test/
 647 libs-y += test/dm/
 648 libs-$(CONFIG_DM_DEMO) += drivers/demo/
 649
 650 ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35 mxs vf610))
 651 libs-y += arch/$(ARCH)/imx-common/
 652 endif
 653
 654 libs-$(CONFIG_ARM) += arch/arm/cpu/
 655 libs-$(CONFIG_PPC) += arch/powerpc/cpu/
 656
 657 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
 658
 659 libs-y := $(sort $(libs-y))
 660
 661 u-boot-dirs     := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
 662
 663 u-boot-alldirs  := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
 664
 665 libs-y          := $(patsubst %/, %/built-in.o, $(libs-y))
 666
 667 u-boot-init := $(head-y)
 668 u-boot-main := $(libs-y)
 669
 670
 671 # Add GCC lib
 672 ifdef CONFIG_USE_PRIVATE_LIBGCC
 673 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
 674 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
 675 else
 676 PLATFORM_LIBGCC = -L $(CONFIG_USE_PRIVATE_LIBGCC) -lgcc
 677 endif
 678 else
 679 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
 680 endif
 681 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
 682 export PLATFORM_LIBS
 683 export PLATFORM_LIBGCC
 684
 685 # Special flags for CPP when processing the linker script.
 686 # Pass the version down so we can handle backwards compatibility
 687 # on the fly.
 688 LDPPFLAGS += \
 689         -include $(srctree)/include/u-boot/u-boot.lds.h \
 690         -DCPUDIR=$(CPUDIR) \
 691         $(shell $(LD) --version | \
 692           sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
 693
 694 #########################################################################
 695 #########################################################################
 696
 697 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
 698 BOARD_SIZE_CHECK = \
 699         @actual=`wc -c $@ | awk '{print $$1}'`; \
 700         limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
 701         if test $$actual -gt $$limit; then \
 702                 echo "$@ exceeds file size limit:" >&2 ; \
 703                 echo "  limit:  $$limit bytes" >&2 ; \
 704                 echo "  actual: $$actual bytes" >&2 ; \
 705                 echo "  excess: $$((actual - limit)) bytes" >&2; \
 706                 exit 1; \
 707         fi
 708 else
 709 BOARD_SIZE_CHECK =
 710 endif
 711
 712 # Statically apply RELA-style relocations (currently arm64 only)
 713 ifneq ($(CONFIG_STATIC_RELA),)
 714 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
 715 DO_STATIC_RELA = \
 716         start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
 717         end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
 718         tools/relocate-rela $(2) $(3) $$start $$end
 719 else
 720 DO_STATIC_RELA =
 721 endif
 722
 723 # Always append ALL so that arch config.mk's can add custom ones
 724 ALL-y += u-boot.srec u-boot.bin System.map binary_size_check
 725
 726 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
 727 ifeq ($(CONFIG_SPL_FSL_PBL),y)
 728 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
 729 else
 730 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
 731 endif
 732 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
 733 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
 734 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
 735 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb u-boot-dtb.bin
 736 ifeq ($(CONFIG_SPL_FRAMEWORK),y)
 737 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
 738 endif
 739 ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
 740 ifneq ($(CONFIG_SPL_TARGET),)
 741 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
 742 endif
 743 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
 744
 745 # enable combined SPL/u-boot/dtb rules for tegra
 746 ifneq ($(CONFIG_TEGRA),)
 747 ifeq ($(CONFIG_SPL),y)
 748 ifeq ($(CONFIG_OF_SEPARATE),y)
 749 ALL-y += u-boot-dtb-tegra.bin
 750 else
 751 ALL-y += u-boot-nodtb-tegra.bin
 752 endif
 753 endif
 754 endif
 755
 756 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
 757 ifneq ($(CONFIG_SYS_TEXT_BASE),)
 758 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
 759 endif
 760
 761 quiet_cmd_objcopy = OBJCOPY $@
 762 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
 763
 764 quiet_cmd_mkimage = MKIMAGE $@
 765 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
 766         $(if $(KBUILD_VERBOSE:1=), >/dev/null)
 767
 768 quiet_cmd_cat = CAT     $@
 769 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
 770
 771 append = cat $(filter-out $< $(PHONY), $^) >> $@
 772
 773 quiet_cmd_pad_cat = CAT     $@
 774 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
 775
 776 all:            $(ALL-y)
 777
 778 PHONY += dtbs
 779 dtbs dts/dt.dtb: checkdtc u-boot
 780         $(Q)$(MAKE) $(build)=dts dtbs
 781
 782 u-boot-dtb.bin: u-boot.bin dts/dt.dtb FORCE
 783         $(call if_changed,cat)
 784
 785 %.imx: %.bin
 786         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 787
 788 quiet_cmd_copy = COPY    $@
 789       cmd_copy = cp $< $@
 790
 791 u-boot.dtb: dts/dt.dtb
 792         $(call cmd,copy)
 793
 794 OBJCOPYFLAGS_u-boot.hex := -O ihex
 795
 796 OBJCOPYFLAGS_u-boot.srec := -O srec
 797
 798 u-boot.hex u-boot.srec: u-boot FORCE
 799         $(call if_changed,objcopy)
 800
 801 OBJCOPYFLAGS_u-boot.bin := -O binary
 802
 803 binary_size_check: u-boot.bin FORCE
 804         @file_size=$(shell wc -c u-boot.bin | awk '{print $$1}') ; \
 805         map_size=$(shell cat u-boot.map | \
 806                 awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
 807                 | sed 's/0X//g' \
 808                 | bc); \
 809         if [ "" != "$$map_size" ]; then \
 810                 if test $$map_size -ne $$file_size; then \
 811                         echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
 812                         echo "  but u-boot.bin shows $$file_size" >&2 ; \
 813                         exit 1; \
 814                 fi \
 815         fi
 816
 817 u-boot.bin: u-boot FORCE
 818         $(call if_changed,objcopy)
 819         $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
 820         $(BOARD_SIZE_CHECK)
 821
 822 u-boot.ldr:     u-boot
 823                 $(CREATE_LDR_ENV)
 824                 $(LDR) -T $(CONFIG_BFIN_CPU) -c $@ $< $(LDR_FLAGS)
 825                 $(BOARD_SIZE_CHECK)
 826
 827 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
 828
 829 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
 830
 831 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
 832         $(call if_changed,objcopy)
 833
 834 #
 835 # U-Boot entry point, needed for booting of full-blown U-Boot
 836 # from the SPL U-Boot version.
 837 #
 838 ifndef CONFIG_SYS_UBOOT_START
 839 CONFIG_SYS_UBOOT_START := 0
 840 endif
 841
 842 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
 843         -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
 844         -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
 845
 846 MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
 847         -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
 848
 849 MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
 850                 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
 851
 852 u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE
 853         $(call if_changed,mkimage)
 854
 855 MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
 856
 857 u-boot-dtb.img: u-boot-dtb.bin FORCE
 858         $(call if_changed,mkimage)
 859
 860 u-boot.sha1:    u-boot.bin
 861                 tools/ubsha1 u-boot.bin
 862
 863 u-boot.dis:     u-boot
 864                 $(OBJDUMP) -d $< > $@
 865
 866 ifdef CONFIG_TPL
 867 SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
 868 else
 869 SPL_PAYLOAD := u-boot.bin
 870 endif
 871
 872 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
 873                                    --pad-to=$(CONFIG_SPL_PAD_TO)
 874 u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
 875         $(call if_changed,pad_cat)
 876
 877 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
 878                                    --pad-to=$(CONFIG_TPL_PAD_TO)
 879 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
 880         $(call if_changed,pad_cat)
 881
 882 SPL: spl/u-boot-spl.bin FORCE
 883         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 884
 885 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
 886         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 887
 888 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
 889
 890 u-boot.ubl: u-boot-with-spl.bin FORCE
 891         $(call if_changed,mkimage)
 892
 893 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
 894         $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
 895         -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
 896 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
 897         $(call if_changed,mkimage)
 898
 899 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
 900 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
 901         $(call if_changed,pad_cat)
 902
 903 u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
 904         $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
 905 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
 906         $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
 907
 908 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
 909 # Both images are created using mkimage (crc etc), so that the ROM
 910 # bootloader can check its integrity. Padding needs to be done to the
 911 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
 912 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
 913 # The resulting image containing both U-Boot images is called u-boot.spr
 914 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
 915         -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
 916 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
 917         $(call if_changed,mkimage)
 918
 919 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
 920                           --gap-fill=0xff
 921 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
 922         $(call if_changed,pad_cat)
 923
 924 MKIMAGEFLAGS_u-boot-spl.gph = -A $(ARCH) -T gpimage -C none \
 925         -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n SPL
 926 spl/u-boot-spl.gph: spl/u-boot-spl.bin FORCE
 927         $(call if_changed,mkimage)
 928
 929 OBJCOPYFLAGS_u-boot-spi.gph = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
 930                           --gap-fill=0
 931 u-boot-spi.gph: spl/u-boot-spl.gph u-boot.img FORCE
 932         $(call if_changed,pad_cat)
 933
 934 MKIMAGEFLAGS_u-boot-nand.gph = -A $(ARCH) -T gpimage -C none \
 935         -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) -n U-Boot
 936 u-boot-nand.gph: u-boot.bin FORCE
 937         $(call if_changed,mkimage)
 938         @dd if=/dev/zero bs=8 count=1 2>/dev/null >> $@
 939
 940 ifneq ($(CONFIG_SUNXI),)
 941 OBJCOPYFLAGS_u-boot-sunxi-with-spl.bin = -I binary -O binary \
 942                                    --pad-to=$(CONFIG_SPL_PAD_TO) --gap-fill=0xff
 943 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img FORCE
 944         $(call if_changed,pad_cat)
 945 endif
 946
 947 ifneq ($(CONFIG_TEGRA),)
 948 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
 949 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
 950         $(call if_changed,pad_cat)
 951
 952 ifeq ($(CONFIG_OF_SEPARATE),y)
 953 u-boot-dtb-tegra.bin: u-boot-nodtb-tegra.bin dts/dt.dtb FORCE
 954         $(call if_changed,cat)
 955 endif
 956 endif
 957
 958 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
 959         $(call if_changed,cat)
 960
 961 #Add a target to create boot binary having SPL binary in PBI format
 962 #concatenated with u-boot binary. It is need by PowerPC SoC having
 963 #internal SRAM <= 512KB.
 964 MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
 965                 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
 966
 967 spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
 968         $(call if_changed,mkimage)
 969
 970 OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
 971                           --gap-fill=0xff
 972
 973 u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl u-boot.bin FORCE
 974         $(call if_changed,pad_cat)
 975
 976 # PPC4xx needs the SPL at the end of the image, since the reset vector
 977 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
 978 # and need to introduce a new build target with the full blown U-Boot
 979 # at the start padded up to the start of the SPL image. And then concat
 980 # the SPL image to the end.
 981
 982 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
 983         --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
 984 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
 985         $(call if_changed,pad_cat)
 986
 987 # Create a new ELF from a raw binary file.  This is useful for arm64
 988 # where static relocation needs to be performed on the raw binary,
 989 # but certain simulators only accept an ELF file (but don't do the
 990 # relocation).
 991 # FIXME refactor dts/Makefile to share target/arch detection
 992 u-boot.elf: u-boot.bin
 993         @$(OBJCOPY)  -B aarch64 -I binary -O elf64-littleaarch64 \
 994                 $< u-boot-elf.o
 995         @$(LD) u-boot-elf.o -o $@ \
 996                 --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
 997                 -Ttext=$(CONFIG_SYS_TEXT_BASE)
 998
 999 # Rule to link u-boot
1000 # May be overridden by arch/$(ARCH)/config.mk
1001 quiet_cmd_u-boot__ ?= LD      $@
1002       cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
1003       -T u-boot.lds $(u-boot-init)                             \
1004       --start-group $(u-boot-main) --end-group                 \
1005       $(PLATFORM_LIBS) -Map u-boot.map
1006
1007 quiet_cmd_smap = GEN     common/system_map.o
1008 cmd_smap = \
1009         smap=`$(call SYSTEM_MAP,u-boot) | \
1010                 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
1011         $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
1012                 -c $(srctree)/common/system_map.c -o common/system_map.o
1013
1014 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds
1015         $(call if_changed,u-boot__)
1016 ifeq ($(CONFIG_KALLSYMS),y)
1017         $(call cmd,smap)
1018         $(call cmd,u-boot__) common/system_map.o
1019 endif
1020
1021 # The actual objects are generated when descending,
1022 # make sure no implicit rule kicks in
1023 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
1024
1025 # Handle descending into subdirectories listed in $(vmlinux-dirs)
1026 # Preset locale variables to speed up the build process. Limit locale
1027 # tweaks to this spot to avoid wrong language settings when running
1028 # make menuconfig etc.
1029 # Error messages still appears in the original language
1030
1031 PHONY += $(u-boot-dirs)
1032 $(u-boot-dirs): prepare scripts
1033         $(Q)$(MAKE) $(build)=$@
1034
1035 tools: prepare
1036 # The "tools" are needed early
1037 $(filter-out tools, $(u-boot-dirs)): tools
1038 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
1039 # is "yes"), so compile examples after U-Boot is compiled.
1040 examples: $(filter-out examples, $(u-boot-dirs))
1041
1042 define filechk_uboot.release
1043         echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1044 endef
1045
1046 # Store (new) UBOOTRELEASE string in include/config/uboot.release
1047 include/config/uboot.release: include/config/auto.conf FORCE
1048         $(call filechk,uboot.release)
1049
1050
1051 # Things we need to do before we recursively start building the kernel
1052 # or the modules are listed in "prepare".
1053 # A multi level approach is used. prepareN is processed before prepareN-1.
1054 # archprepare is used in arch Makefiles and when processed asm symlink,
1055 # version.h and scripts_basic is processed / created.
1056
1057 # Listed in dependency order
1058 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1059
1060 # prepare3 is used to check if we are building in a separate output directory,
1061 # and if so do:
1062 # 1) Check that make has not been executed in the kernel src $(srctree)
1063 prepare3: include/config/uboot.release
1064 ifneq ($(KBUILD_SRC),)
1065         @$(kecho) '  Using $(srctree) as source for U-Boot'
1066         $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
1067                 echo >&2 "  $(srctree) is not clean, please run 'make mrproper'"; \
1068                 echo >&2 "  in the '$(srctree)' directory.";\
1069                 /bin/false; \
1070         fi;
1071 endif
1072
1073 # prepare2 creates a makefile if using a separate output directory
1074 prepare2: prepare3 outputmakefile
1075
1076 prepare1: prepare2 $(version_h) $(timestamp_h) \
1077                    include/config/auto.conf
1078 ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
1079 ifeq ($(CONFIG_SYS_GENERIC_BOARD),y)
1080         @echo >&2 "  Your architecture does not support generic board."
1081         @echo >&2 "  Please undefine CONFIG_SYS_GENERIC_BOARD in your board config file."
1082         @/bin/false
1083 endif
1084 endif
1085 ifeq ($(wildcard $(LDSCRIPT)),)
1086         @echo >&2 "  Could not find linker script."
1087         @/bin/false
1088 endif
1089
1090 archprepare: prepare1 scripts_basic
1091
1092 prepare0: archprepare FORCE
1093         $(Q)$(MAKE) $(build)=.
1094
1095 # All the preparing..
1096 prepare: prepare0
1097
1098 # Generate some files
1099 # ---------------------------------------------------------------------------
1100
1101 define filechk_version.h
1102         (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1103         echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1104         echo \#define CC_VERSION_STRING \"$$($(CC) --version | head -n 1)\"; \
1105         echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; )
1106 endef
1107
1108 define filechk_timestamp.h
1109         (LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1110         LC_ALL=C date +'#define U_BOOT_TIME "%T"')
1111 endef
1112
1113 $(version_h): include/config/uboot.release FORCE
1114         $(call filechk,version.h)
1115
1116 $(timestamp_h): $(srctree)/Makefile FORCE
1117         $(call filechk,timestamp.h)
1118
1119 # ---------------------------------------------------------------------------
1120
1121 PHONY += depend dep
1122 depend dep:
1123         @echo '*** Warning: make $@ is unnecessary now.'
1124
1125 # ---------------------------------------------------------------------------
1126 quiet_cmd_cpp_lds = LDS     $@
1127 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
1128                 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
1129
1130 u-boot.lds: $(LDSCRIPT) prepare FORCE
1131         $(call if_changed_dep,cpp_lds)
1132
1133 spl/u-boot-spl.bin: spl/u-boot-spl
1134         @:
1135 spl/u-boot-spl: tools prepare
1136         $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all
1137
1138 spl/sunxi-spl.bin: spl/u-boot-spl
1139         @:
1140
1141 tpl/u-boot-tpl.bin: tools prepare
1142         $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
1143
1144 TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
1145
1146 FIND := find
1147 FINDFLAGS := -L
1148
1149 tags ctags:
1150                 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1151                                                 -name '*.[chS]' -print`
1152
1153 etags:
1154                 etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1155                                                 -name '*.[chS]' -print`
1156 cscope:
1157                 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1158                                                 cscope.files
1159                 cscope -b -q -k
1160
1161 SYSTEM_MAP = \
1162                 $(NM) $1 | \
1163                 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1164                 LC_ALL=C sort
1165 System.map:     u-boot
1166                 @$(call SYSTEM_MAP,$<) > $@
1167
1168 checkdtc:
1169         @if test $(call dtc-version) -lt 0104; then \
1170                 echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
1171                 false; \
1172         fi
1173
1174 #########################################################################
1175
1176 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1177 # R_AARCH64_RELATIVE (64-bit).
1178 checkarmreloc: u-boot
1179         @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1180                 grep R_A | sort -u`"; \
1181         if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1182                  "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1183                 echo "$< contains unexpected relocations: $$RELOC"; \
1184                 false; \
1185         fi
1186
1187 env: scripts_basic
1188         $(Q)$(MAKE) $(build)=tools/$@
1189
1190 tools-only: scripts_basic $(version_h) $(timestamp_h)
1191         $(Q)$(MAKE) $(build)=tools
1192
1193 tools-all: export HOST_TOOLS_ALL=y
1194 tools-all: env tools ;
1195
1196 cross_tools: export CROSS_BUILD_TOOLS=y
1197 cross_tools: tools ;
1198
1199 .PHONY : CHANGELOG
1200 CHANGELOG:
1201         git log --no-merges U-Boot-1_1_5.. | \
1202         unexpand -a | sed -e 's/\s\s*$$//' > $@
1203
1204 include/license.h: tools/bin2header COPYING
1205         cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h
1206 #########################################################################
1207
1208 ###
1209 # Cleaning is done on three levels.
1210 # make clean     Delete most generated files
1211 #                Leave enough to build external modules
1212 # make mrproper  Delete the current configuration, and all generated files
1213 # make distclean Remove editor backup files, patch leftover files and the like
1214
1215 # Directories & files removed with 'make clean'
1216 CLEAN_DIRS  += $(MODVERDIR)
1217 CLEAN_FILES += u-boot.lds include/bmp_logo.h include/bmp_logo_data.h
1218
1219 # Directories & files removed with 'make clobber'
1220 CLOBBER_DIRS  += $(foreach d, spl tpl, $(patsubst %,$d/%, \
1221                         $(filter-out include, $(shell ls -1 $d 2>/dev/null))))
1222 CLOBBER_FILES += u-boot* MLO* SPL System.map
1223
1224 # Directories & files removed with 'make mrproper'
1225 MRPROPER_DIRS  += include/config include/generated spl tpl \
1226                   .tmp_objdiff
1227 MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \
1228                   ctags etags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
1229
1230 # clean - Delete most, but leave enough to build external modules
1231 #
1232 clean: rm-dirs  := $(CLEAN_DIRS)
1233 clean: rm-files := $(CLEAN_FILES)
1234
1235 clean-dirs      := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
1236
1237 clean-dirs      := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
1238
1239 PHONY += $(clean-dirs) clean archclean
1240 $(clean-dirs):
1241         $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1242
1243 # TODO: Do not use *.cfgtmp
1244 clean: $(clean-dirs)
1245         $(call cmd,rmdirs)
1246         $(call cmd,rmfiles)
1247         @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1248                 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1249                 -o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
1250                 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1251                 -o -name '*.symtypes' -o -name 'modules.order' \
1252                 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1253                 -o -name '*.gcno' \) -type f -print | xargs rm -f
1254
1255 # clobber
1256 #
1257 clobber: rm-dirs  := $(CLOBBER_DIRS)
1258 clobber: rm-files := $(CLOBBER_FILES)
1259
1260 PHONY += clobber
1261
1262 clobber: clean
1263         $(call cmd,rmdirs)
1264         $(call cmd,rmfiles)
1265
1266 # mrproper - Delete all generated files, including .config
1267 #
1268 mrproper: rm-dirs  := $(wildcard $(MRPROPER_DIRS))
1269 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1270 mrproper-dirs      := $(addprefix _mrproper_,scripts)
1271
1272 PHONY += $(mrproper-dirs) mrproper archmrproper
1273 $(mrproper-dirs):
1274         $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1275
1276 mrproper: clobber $(mrproper-dirs)
1277         $(call cmd,rmdirs)
1278         $(call cmd,rmfiles)
1279         @rm -f arch/*/include/asm/arch
1280
1281 # distclean
1282 #
1283 PHONY += distclean
1284
1285 distclean: mrproper
1286         @find $(srctree) $(RCS_FIND_IGNORE) \
1287                 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1288                 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1289                 -o -name '.*.rej' -o -name '*%' -o -name 'core' \
1290                 -o -name '*.pyc' \) \
1291                 -type f -print | xargs rm -f
1292         @rm -f boards.cfg
1293
1294 backup:
1295         F=`basename $(srctree)` ; cd .. ; \
1296         gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1297
1298 help:
1299         @echo  'Cleaning targets:'
1300         @echo  '  clean           - Remove most generated files but keep the config and'
1301         @echo  '                    necessities for testing u-boot'
1302         @echo  '  clobber         - Remove most generated files but keep the config'
1303         @echo  '  mrproper        - Remove all generated files + config + various backup files'
1304         @echo  '  distclean       - mrproper + remove editor backup and patch files'
1305         @echo  ''
1306         @echo  'Configuration targets:'
1307         @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1308         @echo  ''
1309         @echo  'Other generic targets:'
1310         @echo  '  all             - Build all necessary images depending on configuration'
1311         @echo  '  u-boot          - Build the bare u-boot'
1312         @echo  '  dir/            - Build all files in dir and below'
1313         @echo  '  dir/file.[oisS] - Build specified target only'
1314         @echo  '  dir/file.lst    - Build specified mixed source/assembly target only'
1315         @echo  '                    (requires a recent binutils and recent build (System.map))'
1316         @echo  '  tags/ctags      - Generate ctags file for editors'
1317         @echo  '  etags           - Generate etags file for editors'
1318         @echo  '  cscope          - Generate cscope index'
1319         @echo  '  ubootrelease    - Output the release version string'
1320         @echo  '  ubootversion    - Output the version stored in Makefile'
1321         @echo  ''
1322         @echo  'Static analysers'
1323         @echo  '  checkstack      - Generate a list of stack hogs'
1324         @echo  ''
1325         @echo  'Documentation targets:'
1326         @$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
1327         @echo  ''
1328         @echo  '  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1329         @echo  '  make V=2   [targets] 2 => give reason for rebuild of target'
1330         @echo  '  make O=dir [targets] Locate all output files in "dir", including .config'
1331         @echo  '  make C=1   [targets] Check all c source with $$CHECK (sparse by default)'
1332         @echo  '  make C=2   [targets] Force check of all c source with $$CHECK'
1333         @echo  '  make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1334         @echo  '  make W=n   [targets] Enable extra gcc checks, n=1,2,3 where'
1335         @echo  '                1: warnings which may be relevant and do not occur too often'
1336         @echo  '                2: warnings which occur quite often but may still be relevant'
1337         @echo  '                3: more obscure warnings, can most likely be ignored'
1338         @echo  '                Multiple levels can be combined with W=12 or W=123'
1339         @echo  ''
1340         @echo  'Execute "make" or "make all" to build all targets marked with [*] '
1341         @echo  'For further info see the ./README file'
1342
1343
1344 # Documentation targets
1345 # ---------------------------------------------------------------------------
1346 %docs: scripts_basic FORCE
1347         $(Q)$(MAKE) $(build)=scripts build_docproc
1348         $(Q)$(MAKE) $(build)=doc/DocBook $@
1349
1350 # Dummies...
1351 PHONY += prepare scripts
1352 prepare: ;
1353 scripts: ;
1354
1355 endif #ifeq ($(config-targets),1)
1356 endif #ifeq ($(mixed-targets),1)
1357
1358 PHONY += checkstack ubootrelease ubootversion
1359
1360 checkstack:
1361         $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1362         $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1363
1364 ubootrelease:
1365         @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1366
1367 ubootversion:
1368         @echo $(UBOOTVERSION)
1369
1370 # Single targets
1371 # ---------------------------------------------------------------------------
1372 # Single targets are compatible with:
1373 # - build with mixed source and output
1374 # - build with separate output dir 'make O=...'
1375 # - external modules
1376 #
1377 #  target-dir => where to store outputfile
1378 #  build-dir  => directory in kernel source tree to use
1379
1380 ifeq ($(KBUILD_EXTMOD),)
1381         build-dir  = $(patsubst %/,%,$(dir $@))
1382         target-dir = $(dir $@)
1383 else
1384         zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1385         build-dir  = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1386         target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1387 endif
1388
1389 %.s: %.c prepare scripts FORCE
1390         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1391 %.i: %.c prepare scripts FORCE
1392         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1393 %.o: %.c prepare scripts FORCE
1394         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1395 %.lst: %.c prepare scripts FORCE
1396         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1397 %.s: %.S prepare scripts FORCE
1398         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1399 %.o: %.S prepare scripts FORCE
1400         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1401 %.symtypes: %.c prepare scripts FORCE
1402         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1403
1404 # Modules
1405 /: prepare scripts FORCE
1406         $(cmd_crmodverdir)
1407         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1408         $(build)=$(build-dir)
1409 %/: prepare scripts FORCE
1410         $(cmd_crmodverdir)
1411         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1412         $(build)=$(build-dir)
1413 %.ko: prepare scripts FORCE
1414         $(cmd_crmodverdir)
1415         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1)   \
1416         $(build)=$(build-dir) $(@:.ko=.o)
1417         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1418
1419 # FIXME Should go into a make.lib or something
1420 # ===========================================================================
1421
1422 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN   $(wildcard $(rm-dirs)))
1423       cmd_rmdirs = rm -rf $(rm-dirs)
1424
1425 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files)))
1426       cmd_rmfiles = rm -f $(rm-files)
1427
1428 # read all saved command lines
1429
1430 targets := $(wildcard $(sort $(targets)))
1431 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1432
1433 ifneq ($(cmd_files),)
1434   $(cmd_files): ;       # Do not try to update included dependency files
1435   include $(cmd_files)
1436 endif
1437
1438 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1439 # Usage:
1440 # $(Q)$(MAKE) $(clean)=dir
1441 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1442
1443 endif   # skip-makefile
1444
1445 PHONY += FORCE
1446 FORCE:
1447
1448 # Declare the contents of the .PHONY variable as phony.  We keep that
1449 # information in a variable so we can use it in if_changed and friends.
1450 .PHONY: $(PHONY)