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 = 04
  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 := $(O)
 110 endif
 111
 112 ifeq ("$(origin W)", "command line")
 113   export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W)
 114 endif
 115
 116 # That's our default target when none is given on the command line
 117 PHONY := _all
 118 _all:
 119
 120 # Cancel implicit rules on top Makefile
 121 $(CURDIR)/Makefile Makefile: ;
 122
 123 ifneq ($(KBUILD_OUTPUT),)
 124 # Invoke a second make in the output directory, passing relevant variables
 125 # check that the output directory actually exists
 126 saved-output := $(KBUILD_OUTPUT)
 127 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
 128                                                                 && /bin/pwd)
 129 $(if $(KBUILD_OUTPUT),, \
 130      $(error failed to create output directory "$(saved-output)"))
 131
 132 PHONY += $(MAKECMDGOALS) sub-make
 133
 134 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
 135         @:
 136
 137 sub-make: FORCE
 138         $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
 139         KBUILD_SRC=$(CURDIR) \
 140         KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
 141         $(filter-out _all sub-make,$(MAKECMDGOALS))
 142
 143 # Leave processing to above invocation of make
 144 skip-makefile := 1
 145 endif # ifneq ($(KBUILD_OUTPUT),)
 146 endif # ifeq ($(KBUILD_SRC),)
 147
 148 # We process the rest of the Makefile if this is the final invocation of make
 149 ifeq ($(skip-makefile),)
 150
 151 # If building an external module we do not care about the all: rule
 152 # but instead _all depend on modules
 153 PHONY += all
 154 ifeq ($(KBUILD_EXTMOD),)
 155 _all: all
 156 else
 157 _all: modules
 158 endif
 159
 160 srctree         := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
 161 objtree         := $(CURDIR)
 162 src             := $(srctree)
 163 obj             := $(objtree)
 164
 165 VPATH           := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
 166
 167 export srctree objtree VPATH
 168
 169 MKCONFIG        := $(srctree)/mkconfig
 170 export MKCONFIG
 171
 172 # Make sure CDPATH settings don't interfere
 173 unexport CDPATH
 174
 175 #########################################################################
 176
 177 HOSTARCH := $(shell uname -m | \
 178         sed -e s/i.86/x86/ \
 179             -e s/sun4u/sparc64/ \
 180             -e s/arm.*/arm/ \
 181             -e s/sa110/arm/ \
 182             -e s/ppc64/powerpc/ \
 183             -e s/ppc/powerpc/ \
 184             -e s/macppc/powerpc/\
 185             -e s/sh.*/sh/)
 186
 187 HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
 188             sed -e 's/\(cygwin\).*/cygwin/')
 189
 190 export  HOSTARCH HOSTOS
 191
 192 # Deal with colliding definitions from tcsh etc.
 193 VENDOR=
 194
 195 #########################################################################
 196
 197 # set default to nothing for native builds
 198 ifeq ($(HOSTARCH),$(ARCH))
 199 CROSS_COMPILE ?=
 200 endif
 201
 202 # SHELL used by kbuild
 203 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
 204           else if [ -x /bin/bash ]; then echo /bin/bash; \
 205           else echo sh; fi ; fi)
 206
 207 HOSTCC       = gcc
 208 HOSTCXX      = g++
 209 HOSTCFLAGS   = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
 210 HOSTCXXFLAGS = -O2
 211
 212 ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1)
 213 HOSTCFLAGS  += -Wno-unused-value -Wno-unused-parameter \
 214                 -Wno-missing-field-initializers -fno-delete-null-pointer-checks
 215 endif
 216
 217 ifeq ($(HOSTOS),cygwin)
 218 HOSTCFLAGS      += -ansi
 219 endif
 220
 221 # Mac OS X / Darwin's C preprocessor is Apple specific.  It
 222 # generates numerous errors and warnings.  We want to bypass it
 223 # and use GNU C's cpp.  To do this we pass the -traditional-cpp
 224 # option to the compiler.  Note that the -traditional-cpp flag
 225 # DOES NOT have the same semantics as GNU C's flag, all it does
 226 # is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
 227 #
 228 # Apple's linker is similar, thanks to the new 2 stage linking
 229 # multiple symbol definitions are treated as errors, hence the
 230 # -multiply_defined suppress option to turn off this error.
 231 #
 232 ifeq ($(HOSTOS),darwin)
 233 # get major and minor product version (e.g. '10' and '6' for Snow Leopard)
 234 DARWIN_MAJOR_VERSION    = $(shell sw_vers -productVersion | cut -f 1 -d '.')
 235 DARWIN_MINOR_VERSION    = $(shell sw_vers -productVersion | cut -f 2 -d '.')
 236
 237 os_x_before     = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
 238         $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
 239
 240 # Snow Leopards build environment has no longer restrictions as described above
 241 HOSTCC       = $(call os_x_before, 10, 5, "cc", "gcc")
 242 HOSTCFLAGS  += $(call os_x_before, 10, 4, "-traditional-cpp")
 243 HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
 244 endif
 245
 246 # Decide whether to build built-in, modular, or both.
 247 # Normally, just do built-in.
 248
 249 KBUILD_MODULES :=
 250 KBUILD_BUILTIN := 1
 251
 252 #       If we have only "make modules", don't compile built-in objects.
 253 #       When we're building modules with modversions, we need to consider
 254 #       the built-in objects during the descend as well, in order to
 255 #       make sure the checksums are up to date before we record them.
 256
 257 ifeq ($(MAKECMDGOALS),modules)
 258   KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
 259 endif
 260
 261 #       If we have "make <whatever> modules", compile modules
 262 #       in addition to whatever we do anyway.
 263 #       Just "make" or "make all" shall build modules as well
 264
 265 # U-Boot does not need modules
 266 #ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
 267 #  KBUILD_MODULES := 1
 268 #endif
 269
 270 #ifeq ($(MAKECMDGOALS),)
 271 #  KBUILD_MODULES := 1
 272 #endif
 273
 274 export KBUILD_MODULES KBUILD_BUILTIN
 275 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
 276
 277 # Beautify output
 278 # ---------------------------------------------------------------------------
 279 #
 280 # Normally, we echo the whole command before executing it. By making
 281 # that echo $($(quiet)$(cmd)), we now have the possibility to set
 282 # $(quiet) to choose other forms of output instead, e.g.
 283 #
 284 #         quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
 285 #         cmd_cc_o_c       = $(CC) $(c_flags) -c -o $@ $<
 286 #
 287 # If $(quiet) is empty, the whole command will be printed.
 288 # If it is set to "quiet_", only the short version will be printed.
 289 # If it is set to "silent_", nothing will be printed at all, since
 290 # the variable $(silent_cmd_cc_o_c) doesn't exist.
 291 #
 292 # A simple variant is to prefix commands with $(Q) - that's useful
 293 # for commands that shall be hidden in non-verbose mode.
 294 #
 295 #       $(Q)ln $@ :<
 296 #
 297 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
 298 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
 299
 300 ifeq ($(KBUILD_VERBOSE),1)
 301   quiet =
 302   Q =
 303 else
 304   quiet=quiet_
 305   Q = @
 306 endif
 307
 308 # If the user is running make -s (silent mode), suppress echoing of
 309 # commands
 310
 311 ifneq ($(filter 4.%,$(MAKE_VERSION)),)  # make-4
 312 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
 313   quiet=silent_
 314 endif
 315 else                                    # make-3.8x
 316 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
 317   quiet=silent_
 318 endif
 319 endif
 320
 321 export quiet Q KBUILD_VERBOSE
 322
 323 ifneq ($(CC),)
 324 ifeq ($(shell $(CC) -v 2>&1 | grep -c "clang version"), 1)
 325 COMPILER := clang
 326 else
 327 COMPILER := gcc
 328 endif
 329 export COMPILER
 330 endif
 331
 332 # Look for make include files relative to root of kernel src
 333 MAKEFLAGS += --include-dir=$(srctree)
 334
 335 # We need some generic definitions (do not try to remake the file).
 336 $(srctree)/scripts/Kbuild.include: ;
 337 include $(srctree)/scripts/Kbuild.include
 338
 339 # Make variables (CC, etc...)
 340
 341 AS              = $(CROSS_COMPILE)as
 342 # Always use GNU ld
 343 ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
 344 LD              = $(CROSS_COMPILE)ld.bfd
 345 else
 346 LD              = $(CROSS_COMPILE)ld
 347 endif
 348 CC              = $(CROSS_COMPILE)gcc
 349 CPP             = $(CC) -E
 350 AR              = $(CROSS_COMPILE)ar
 351 NM              = $(CROSS_COMPILE)nm
 352 LDR             = $(CROSS_COMPILE)ldr
 353 STRIP           = $(CROSS_COMPILE)strip
 354 OBJCOPY         = $(CROSS_COMPILE)objcopy
 355 OBJDUMP         = $(CROSS_COMPILE)objdump
 356 AWK             = awk
 357 RANLIB          = $(CROSS_COMPILE)RANLIB
 358 DTC             = dtc
 359 CHECK           = sparse
 360
 361 CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
 362                   -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
 363
 364 KBUILD_CPPFLAGS := -D__KERNEL__
 365
 366 KBUILD_CFLAGS   := -Wall -Wstrict-prototypes \
 367                    -Wno-format-security \
 368                    -fno-builtin -ffreestanding
 369 KBUILD_AFLAGS   := -D__ASSEMBLY__
 370
 371 # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
 372 UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
 373 UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
 374
 375 export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
 376 export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
 377 export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
 378 export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
 379 export MAKE AWK
 380 export DTC CHECK CHECKFLAGS
 381
 382 export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
 383 export KBUILD_CFLAGS KBUILD_AFLAGS
 384
 385 # When compiling out-of-tree modules, put MODVERDIR in the module
 386 # tree rather than in the kernel tree. The kernel tree might
 387 # even be read-only.
 388 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
 389
 390 # Files to ignore in find ... statements
 391
 392 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o    \
 393                           -name CVS -o -name .pc -o -name .hg -o -name .git \) \
 394                           -prune -o
 395 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
 396                          --exclude CVS --exclude .pc --exclude .hg --exclude .git
 397
 398 # ===========================================================================
 399 # Rules shared between *config targets and build targets
 400
 401 # Basic helpers built in scripts/
 402 PHONY += scripts_basic
 403 scripts_basic:
 404         $(Q)$(MAKE) $(build)=scripts/basic
 405         $(Q)rm -f .tmp_quiet_recordmcount
 406
 407 # To avoid any implicit rule to kick in, define an empty command.
 408 scripts/basic/%: scripts_basic ;
 409
 410 PHONY += outputmakefile
 411 # outputmakefile generates a Makefile in the output directory, if using a
 412 # separate output directory. This allows convenient use of make in the
 413 # output directory.
 414 outputmakefile:
 415 ifneq ($(KBUILD_SRC),)
 416         $(Q)ln -fsn $(srctree) source
 417         $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
 418             $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
 419 endif
 420
 421 # To make sure we do not include .config for any of the *config targets
 422 # catch them early, and hand them over to scripts/kconfig/Makefile
 423 # It is allowed to specify more targets when calling make, including
 424 # mixing *config targets and build targets.
 425 # For example 'make oldconfig all'.
 426 # Detect when mixed targets is specified, and make a second invocation
 427 # of make so .config is not included in this case either (for *config).
 428
 429 version_h := include/generated/version_autogenerated.h
 430 timestamp_h := include/generated/timestamp_autogenerated.h
 431
 432 no-dot-config-targets := clean clobber mrproper distclean \
 433                          help %docs check% coccicheck \
 434                          ubootversion backup tools-only
 435
 436 config-targets := 0
 437 mixed-targets  := 0
 438 dot-config     := 1
 439
 440 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
 441         ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
 442                 dot-config := 0
 443         endif
 444 endif
 445
 446 ifeq ($(KBUILD_EXTMOD),)
 447         ifneq ($(filter config %config,$(MAKECMDGOALS)),)
 448                 config-targets := 1
 449                 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
 450                         mixed-targets := 1
 451                 endif
 452         endif
 453 endif
 454
 455 ifeq ($(mixed-targets),1)
 456 # ===========================================================================
 457 # We're called with mixed targets (*config and build targets).
 458 # Handle them one by one.
 459
 460 PHONY += $(MAKECMDGOALS) build-one-by-one
 461
 462 $(MAKECMDGOALS): build-one-by-one
 463         @:
 464
 465 build-one-by-one:
 466         $(Q)set -e; \
 467         for i in $(MAKECMDGOALS); do \
 468                 $(MAKE) -f $(srctree)/Makefile $$i; \
 469         done
 470
 471 else
 472 ifeq ($(config-targets),1)
 473 # ===========================================================================
 474 # *config targets only - make sure prerequisites are updated, and descend
 475 # in scripts/kconfig to make the *config target
 476
 477 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
 478 # KBUILD_DEFCONFIG may point out an alternative default configuration
 479 # used for 'make defconfig'
 480
 481 %_config:: outputmakefile
 482         @$(MKCONFIG) -A $(@:_config=)
 483
 484 else
 485 # ===========================================================================
 486 # Build targets only - this includes vmlinux, arch specific targets, clean
 487 # targets and others. In general all targets except *config targets.
 488
 489 # load ARCH, BOARD, and CPU configuration
 490 -include include/config.mk
 491
 492 ifeq ($(dot-config),1)
 493 # Read in config
 494 -include include/autoconf.mk
 495 -include include/autoconf.mk.dep
 496
 497 # load other configuration
 498 include $(srctree)/config.mk
 499
 500 ifeq ($(wildcard include/config.mk),)
 501 $(error "System not configured - see README")
 502 endif
 503
 504 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
 505 # that (or fail if absent).  Otherwise, search for a linker script in a
 506 # standard location.
 507
 508 ifndef LDSCRIPT
 509         #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
 510         ifdef CONFIG_SYS_LDSCRIPT
 511                 # need to strip off double quotes
 512                 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
 513         endif
 514 endif
 515
 516 # If there is no specified link script, we look in a number of places for it
 517 ifndef LDSCRIPT
 518         ifeq ($(CONFIG_NAND_U_BOOT),y)
 519                 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot-nand.lds
 520                 ifeq ($(wildcard $(LDSCRIPT)),)
 521                         LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot-nand.lds
 522                 endif
 523         endif
 524         ifeq ($(wildcard $(LDSCRIPT)),)
 525                 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
 526         endif
 527         ifeq ($(wildcard $(LDSCRIPT)),)
 528                 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
 529         endif
 530         ifeq ($(wildcard $(LDSCRIPT)),)
 531                 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
 532         endif
 533 endif
 534
 535 else
 536
 537
 538 endif # $(dot-config)
 539
 540 KBUILD_CFLAGS += -Os #-fomit-frame-pointer
 541
 542 ifdef BUILD_TAG
 543 KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
 544 endif
 545
 546 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
 547
 548 ifeq ($(COMPILER),clang)
 549 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
 550 KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,)
 551 KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable)
 552 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
 553 KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
 554 # Quiet clang warning: comparison of unsigned expression < 0 is always false
 555 KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
 556 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the
 557 # source of a reference will be _MergedGlobals and not on of the whitelisted names.
 558 # See modpost pattern 2
 559 KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
 560 endif
 561
 562 KBUILD_CFLAGS   += -g
 563 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
 564 # option to the assembler.
 565 KBUILD_AFLAGS   += -g
 566
 567 # Report stack usage if supported
 568 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
 569         KBUILD_CFLAGS += -fstack-usage
 570 endif
 571
 572 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
 573
 574 # turn jbsr into jsr for m68k
 575 ifeq ($(ARCH),m68k)
 576 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
 577 KBUILD_AFLAGS += -Wa,-gstabs,-S
 578 endif
 579 endif
 580
 581 ifneq ($(CONFIG_SYS_TEXT_BASE),)
 582 KBUILD_CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
 583 endif
 584
 585 export CONFIG_SYS_TEXT_BASE
 586
 587 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
 588 KBUILD_CPPFLAGS += $(KCPPFLAGS)
 589 KBUILD_AFLAGS += $(KAFLAGS)
 590 KBUILD_CFLAGS += $(KCFLAGS)
 591
 592 # Use UBOOTINCLUDE when you must reference the include/ directory.
 593 # Needed to be compatible with the O= option
 594 UBOOTINCLUDE    := \
 595                 -Iinclude \
 596                 $(if $(KBUILD_SRC), -I$(srctree)/include) \
 597                 -I$(srctree)/arch/$(ARCH)/include
 598
 599 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
 600 CHECKFLAGS     += $(NOSTDINC_FLAGS)
 601
 602 # FIX ME
 603 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
 604                                                         $(NOSTDINC_FLAGS)
 605 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
 606
 607 #########################################################################
 608 # U-Boot objects....order is important (i.e. start must be first)
 609
 610 head-y := $(CPUDIR)/start.o
 611 head-$(CONFIG_4xx) += arch/powerpc/cpu/ppc4xx/resetvec.o
 612 head-$(CONFIG_MPC85xx) += arch/powerpc/cpu/mpc85xx/resetvec.o
 613
 614 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
 615
 616 libs-y += lib/
 617 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
 618 libs-y += $(CPUDIR)/
 619 ifdef SOC
 620 libs-y += $(CPUDIR)/$(SOC)/
 621 endif
 622 libs-$(CONFIG_OF_EMBED) += dts/
 623 libs-y += arch/$(ARCH)/lib/
 624 libs-y += fs/
 625 libs-y += net/
 626 libs-y += disk/
 627 libs-y += drivers/
 628 libs-$(CONFIG_DM) += drivers/core/
 629 libs-y += drivers/dma/
 630 libs-y += drivers/gpio/
 631 libs-y += drivers/i2c/
 632 libs-y += drivers/input/
 633 libs-y += drivers/mmc/
 634 libs-y += drivers/mtd/
 635 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
 636 libs-y += drivers/mtd/onenand/
 637 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
 638 libs-y += drivers/mtd/spi/
 639 libs-y += drivers/net/
 640 libs-y += drivers/net/phy/
 641 libs-y += drivers/pci/
 642 libs-y += drivers/power/ \
 643         drivers/power/fuel_gauge/ \
 644         drivers/power/mfd/ \
 645         drivers/power/pmic/ \
 646         drivers/power/battery/
 647 libs-y += drivers/spi/
 648 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
 649 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
 650 libs-y += drivers/serial/
 651 libs-y += drivers/usb/eth/
 652 libs-y += drivers/usb/gadget/
 653 libs-y += drivers/usb/host/
 654 libs-y += drivers/usb/musb/
 655 libs-y += drivers/usb/musb-new/
 656 libs-y += drivers/usb/phy/
 657 libs-y += drivers/usb/ulpi/
 658 libs-y += common/
 659 libs-y += lib/libfdt/
 660 libs-$(CONFIG_API) += api/
 661 libs-$(CONFIG_HAS_POST) += post/
 662 libs-y += test/
 663 libs-y += test/dm/
 664 libs-$(CONFIG_DM_DEMO) += drivers/demo/
 665
 666 ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35 mxs vf610))
 667 libs-y += arch/$(ARCH)/imx-common/
 668 endif
 669
 670 libs-$(CONFIG_ARM) += arch/arm/cpu/
 671 libs-$(CONFIG_PPC) += arch/powerpc/cpu/
 672
 673 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
 674
 675 libs-y := $(sort $(libs-y))
 676
 677 u-boot-dirs     := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
 678
 679 u-boot-alldirs  := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
 680
 681 libs-y          := $(patsubst %/, %/built-in.o, $(libs-y))
 682
 683 u-boot-init := $(head-y)
 684 u-boot-main := $(libs-y)
 685
 686
 687 # Add GCC lib
 688 ifdef CONFIG_USE_PRIVATE_LIBGCC
 689 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
 690 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
 691 else
 692 PLATFORM_LIBGCC = -L $(CONFIG_USE_PRIVATE_LIBGCC) -lgcc
 693 endif
 694 else
 695 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
 696 endif
 697 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
 698 export PLATFORM_LIBS
 699
 700 # Special flags for CPP when processing the linker script.
 701 # Pass the version down so we can handle backwards compatibility
 702 # on the fly.
 703 LDPPFLAGS += \
 704         -include $(srctree)/include/u-boot/u-boot.lds.h \
 705         -DCPUDIR=$(CPUDIR) \
 706         $(shell $(LD) --version | \
 707           sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
 708
 709 #########################################################################
 710 #########################################################################
 711
 712 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
 713 BOARD_SIZE_CHECK = \
 714         @actual=`wc -c $@ | awk '{print $$1}'`; \
 715         limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
 716         if test $$actual -gt $$limit; then \
 717                 echo "$@ exceeds file size limit:" >&2 ; \
 718                 echo "  limit:  $$limit bytes" >&2 ; \
 719                 echo "  actual: $$actual bytes" >&2 ; \
 720                 echo "  excess: $$((actual - limit)) bytes" >&2; \
 721                 exit 1; \
 722         fi
 723 else
 724 BOARD_SIZE_CHECK =
 725 endif
 726
 727 # Statically apply RELA-style relocations (currently arm64 only)
 728 ifneq ($(CONFIG_STATIC_RELA),)
 729 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
 730 DO_STATIC_RELA = \
 731         start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
 732         end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
 733         tools/relocate-rela $(2) $(3) $$start $$end
 734 else
 735 DO_STATIC_RELA =
 736 endif
 737
 738 # Always append ALL so that arch config.mk's can add custom ones
 739 ALL-y += u-boot.srec u-boot.bin System.map
 740
 741 ALL-$(CONFIG_NAND_U_BOOT) += u-boot-nand.bin
 742 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
 743 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
 744 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
 745 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
 746 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
 747 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb u-boot-dtb.bin
 748 ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
 749 ifneq ($(CONFIG_SPL_TARGET),)
 750 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
 751 endif
 752 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
 753
 754 # enable combined SPL/u-boot/dtb rules for tegra
 755 ifneq ($(CONFIG_TEGRA),)
 756 ifeq ($(CONFIG_SPL),y)
 757 ifeq ($(CONFIG_OF_SEPARATE),y)
 758 ALL-y += u-boot-dtb-tegra.bin
 759 else
 760 ALL-y += u-boot-nodtb-tegra.bin
 761 endif
 762 endif
 763 endif
 764
 765 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
 766 ifneq ($(CONFIG_SYS_TEXT_BASE),)
 767 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
 768 endif
 769
 770 quiet_cmd_objcopy = OBJCOPY $@
 771 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
 772
 773 quiet_cmd_mkimage = MKIMAGE $@
 774 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
 775         $(if $(KBUILD_VERBOSE:1=), >/dev/null)
 776
 777 quiet_cmd_cat = CAT     $@
 778 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
 779
 780 append = cat $(filter-out $< $(PHONY), $^) >> $@
 781
 782 quiet_cmd_pad_cat = CAT     $@
 783 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
 784
 785 all:            $(ALL-y)
 786
 787 PHONY += dtbs
 788 dtbs dts/dt.dtb: checkdtc u-boot
 789         $(Q)$(MAKE) $(build)=dts dtbs
 790
 791 u-boot-dtb.bin: u-boot.bin dts/dt.dtb FORCE
 792         $(call if_changed,cat)
 793
 794 %.imx: %.bin
 795         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 796
 797 quiet_cmd_copy = COPY    $@
 798       cmd_copy = cp $< $@
 799
 800 u-boot.dtb: dts/dt.dtb
 801         $(call cmd,copy)
 802
 803 OBJCOPYFLAGS_u-boot.hex := -O ihex
 804
 805 OBJCOPYFLAGS_u-boot.srec := -O srec
 806
 807 u-boot.hex u-boot.srec: u-boot FORCE
 808         $(call if_changed,objcopy)
 809
 810 OBJCOPYFLAGS_u-boot.bin := -O binary
 811
 812 u-boot.bin: u-boot FORCE
 813         $(call if_changed,objcopy)
 814         $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
 815         $(BOARD_SIZE_CHECK)
 816
 817 u-boot.ldr:     u-boot
 818                 $(CREATE_LDR_ENV)
 819                 $(LDR) -T $(CONFIG_BFIN_CPU) -c $@ $< $(LDR_FLAGS)
 820                 $(BOARD_SIZE_CHECK)
 821
 822 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
 823
 824 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
 825
 826 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
 827         $(call if_changed,objcopy)
 828
 829 #
 830 # U-Boot entry point, needed for booting of full-blown U-Boot
 831 # from the SPL U-Boot version.
 832 #
 833 ifndef CONFIG_SYS_UBOOT_START
 834 CONFIG_SYS_UBOOT_START := 0
 835 endif
 836
 837 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
 838         -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
 839         -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
 840
 841 MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
 842         -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
 843
 844 MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
 845                 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
 846
 847 u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE
 848         $(call if_changed,mkimage)
 849
 850 u-boot.sha1:    u-boot.bin
 851                 tools/ubsha1 u-boot.bin
 852
 853 u-boot.dis:     u-boot
 854                 $(OBJDUMP) -d $< > $@
 855
 856 ifdef CONFIG_TPL
 857 SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
 858 else
 859 SPL_PAYLOAD := u-boot.bin
 860 endif
 861
 862 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
 863                                    --pad-to=$(CONFIG_SPL_PAD_TO)
 864 u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
 865         $(call if_changed,pad_cat)
 866
 867 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
 868                                    --pad-to=$(CONFIG_TPL_PAD_TO)
 869 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
 870         $(call if_changed,pad_cat)
 871
 872 SPL: spl/u-boot-spl.bin FORCE
 873         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 874
 875 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
 876         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 877
 878 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
 879
 880 u-boot.ubl: u-boot-with-spl.bin FORCE
 881         $(call if_changed,mkimage)
 882
 883 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
 884         $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
 885         -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
 886 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
 887         $(call if_changed,mkimage)
 888
 889 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_MAX_SIZE)
 890 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
 891         $(call if_changed,pad_cat)
 892
 893 u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
 894         $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
 895 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
 896         $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
 897
 898 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
 899 # Both images are created using mkimage (crc etc), so that the ROM
 900 # bootloader can check its integrity. Padding needs to be done to the
 901 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
 902 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
 903 # The resulting image containing both U-Boot images is called u-boot.spr
 904 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
 905         -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
 906 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
 907         $(call if_changed,mkimage)
 908
 909 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
 910                           --gap-fill=0xff
 911 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
 912         $(call if_changed,pad_cat)
 913
 914 ifneq ($(CONFIG_TEGRA),)
 915 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
 916 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
 917         $(call if_changed,pad_cat)
 918
 919 ifeq ($(CONFIG_OF_SEPARATE),y)
 920 u-boot-dtb-tegra.bin: u-boot-nodtb-tegra.bin dts/dt.dtb FORCE
 921         $(call if_changed,cat)
 922 endif
 923 endif
 924
 925 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
 926         $(call if_changed,cat)
 927
 928 # PPC4xx needs the SPL at the end of the image, since the reset vector
 929 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
 930 # and need to introduce a new build target with the full blown U-Boot
 931 # at the start padded up to the start of the SPL image. And then concat
 932 # the SPL image to the end.
 933
 934 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
 935         --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
 936 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
 937         $(call if_changed,pad_cat)
 938
 939 # Create a new ELF from a raw binary file.  This is useful for arm64
 940 # where static relocation needs to be performed on the raw binary,
 941 # but certain simulators only accept an ELF file (but don't do the
 942 # relocation).
 943 # FIXME refactor dts/Makefile to share target/arch detection
 944 u-boot.elf: u-boot.bin
 945         @$(OBJCOPY)  -B aarch64 -I binary -O elf64-littleaarch64 \
 946                 $< u-boot-elf.o
 947         @$(LD) u-boot-elf.o -o $@ \
 948                 --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
 949                 -Ttext=$(CONFIG_SYS_TEXT_BASE)
 950
 951 # Rule to link u-boot
 952 # May be overridden by arch/$(ARCH)/config.mk
 953 quiet_cmd_u-boot__ ?= LD      $@
 954       cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
 955       -T u-boot.lds $(u-boot-init)                             \
 956       --start-group $(u-boot-main) --end-group                 \
 957       $(PLATFORM_LIBS) -Map u-boot.map
 958
 959 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds
 960         $(call if_changed,u-boot__)
 961 ifeq ($(CONFIG_KALLSYMS),y)
 962         smap=`$(call SYSTEM_MAP,u-boot) | \
 963                 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
 964         $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
 965                 -c $(srctree)/common/system_map.c -o common/system_map.o
 966         $(call cmd,u-boot__) common/system_map.o
 967 endif
 968
 969 # The actual objects are generated when descending,
 970 # make sure no implicit rule kicks in
 971 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
 972
 973 # Handle descending into subdirectories listed in $(vmlinux-dirs)
 974 # Preset locale variables to speed up the build process. Limit locale
 975 # tweaks to this spot to avoid wrong language settings when running
 976 # make menuconfig etc.
 977 # Error messages still appears in the original language
 978
 979 PHONY += $(u-boot-dirs)
 980 $(u-boot-dirs): prepare scripts
 981         $(Q)$(MAKE) $(build)=$@
 982
 983 tools: prepare
 984 # The "tools" are needed early
 985 $(filter-out tools, $(u-boot-dirs)): tools
 986 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
 987 # is "yes"), so compile examples after U-Boot is compiled.
 988 examples: $(filter-out examples, $(u-boot-dirs))
 989
 990 define filechk_uboot.release
 991         echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
 992 endef
 993
 994 # Store (new) UBOOTRELEASE string in include/config/uboot.release
 995 include/config/uboot.release: Makefile FORCE
 996         $(call filechk,uboot.release)
 997
 998
 999 # Things we need to do before we recursively start building the kernel
1000 # or the modules are listed in "prepare".
1001 # A multi level approach is used. prepareN is processed before prepareN-1.
1002 # archprepare is used in arch Makefiles and when processed asm symlink,
1003 # version.h and scripts_basic is processed / created.
1004
1005 # Listed in dependency order
1006 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1007
1008 # prepare3 is used to check if we are building in a separate output directory,
1009 # and if so do:
1010 # 1) Check that make has not been executed in the kernel src $(srctree)
1011 prepare3: include/config/uboot.release
1012 ifneq ($(KBUILD_SRC),)
1013         @$(kecho) '  Using $(srctree) as source for u-boot'
1014         $(Q)if [ -f $(srctree)/include/config.mk ]; then \
1015                 echo >&2 "  $(srctree) is not clean, please run 'make mrproper'"; \
1016                 echo >&2 "  in the '$(srctree)' directory.";\
1017                 /bin/false; \
1018         fi;
1019 endif
1020
1021 # prepare2 creates a makefile if using a separate output directory
1022 prepare2: prepare3 outputmakefile
1023
1024 prepare1: prepare2 $(version_h) $(timestamp_h)
1025 ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
1026 ifeq ($(CONFIG_SYS_GENERIC_BOARD),y)
1027         @echo >&2 "  Your architecture does not support generic board."
1028         @echo >&2 "  Please undefine CONFIG_SYS_GENERIC_BOARD in your board config file."
1029         @/bin/false
1030 endif
1031 endif
1032 ifeq ($(wildcard $(LDSCRIPT)),)
1033         @echo >&2 "  Could not find linker script."
1034         @/bin/false
1035 endif
1036
1037 archprepare: prepare1 scripts_basic
1038
1039 prepare0: archprepare FORCE
1040         $(Q)$(MAKE) $(build)=.
1041
1042 # All the preparing..
1043 prepare: prepare0
1044
1045 # Generate some files
1046 # ---------------------------------------------------------------------------
1047
1048 define filechk_version.h
1049         (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1050         echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1051         echo \#define CC_VERSION_STRING \"$$($(CC) --version | head -n 1)\"; \
1052         echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; )
1053 endef
1054
1055 define filechk_timestamp.h
1056         (LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1057         LC_ALL=C date +'#define U_BOOT_TIME "%T"')
1058 endef
1059
1060 $(version_h): include/config/uboot.release FORCE
1061         $(call filechk,version.h)
1062
1063 $(timestamp_h): $(srctree)/Makefile FORCE
1064         $(call filechk,timestamp.h)
1065
1066 #
1067 # Auto-generate the autoconf.mk file (which is included by all makefiles)
1068 #
1069 # This target actually generates 2 files; autoconf.mk and autoconf.mk.dep.
1070 # the dep file is only include in this top level makefile to determine when
1071 # to regenerate the autoconf.mk file.
1072
1073 quiet_cmd_autoconf_dep = GEN     $@
1074       cmd_autoconf_dep = $(CC) -x c -DDO_DEPS_ONLY -M $(c_flags) \
1075         -MQ include/autoconf.mk $(srctree)/include/common.h > $@ || rm $@
1076
1077 include/autoconf.mk.dep: include/config.h include/common.h
1078         $(call cmd,autoconf_dep)
1079
1080 quiet_cmd_autoconf = GEN     $@
1081       cmd_autoconf = \
1082         $(CPP) $(c_flags) -DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && \
1083         sed -n -f $(srctree)/tools/scripts/define2mk.sed $@.tmp > $@; \
1084         rm $@.tmp
1085
1086 include/autoconf.mk: include/config.h
1087         $(call cmd,autoconf)
1088
1089 # ---------------------------------------------------------------------------
1090
1091 PHONY += depend dep
1092 depend dep:
1093         @echo '*** Warning: make $@ is unnecessary now.'
1094
1095 # ---------------------------------------------------------------------------
1096 quiet_cmd_cpp_lds = LDS     $@
1097 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
1098                 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
1099
1100 u-boot.lds: $(LDSCRIPT) prepare FORCE
1101         $(call if_changed_dep,cpp_lds)
1102
1103 PHONY += nand_spl
1104 nand_spl: prepare
1105         $(Q)$(MAKE) $(build)=nand_spl/board/$(BOARDDIR) all
1106         @echo >&2
1107         @echo >&2 "==================== WARNING ====================="
1108         @echo >&2 "nand_spl will not be included in v2014.07 release."
1109         @echo >&2 "Please switch over to SPL."
1110         @echo >&2 "Otherwise, this board will be removed."
1111         @echo >&2 "=================================================="
1112         @echo >&2
1113
1114 nand_spl/u-boot-spl-16k.bin: nand_spl
1115         @:
1116
1117 u-boot-nand.bin: nand_spl/u-boot-spl-16k.bin u-boot.bin FORCE
1118         $(call if_changed,cat)
1119
1120 spl/u-boot-spl.bin: spl/u-boot-spl
1121         @:
1122 spl/u-boot-spl: tools prepare
1123         $(Q)$(MAKE) obj=spl -f $(srctree)/spl/Makefile all
1124
1125 tpl/u-boot-tpl.bin: tools prepare
1126         $(Q)$(MAKE) obj=tpl -f $(srctree)/spl/Makefile all CONFIG_TPL_BUILD=y
1127
1128 TAG_SUBDIRS := $(u-boot-dirs) include
1129
1130 FIND := find
1131 FINDFLAGS := -L
1132
1133 tags ctags:
1134                 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1135                                                 -name '*.[chS]' -print`
1136
1137 etags:
1138                 etags -a -o $(obj)etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1139                                                 -name '*.[chS]' -print`
1140 cscope:
1141                 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1142                                                 cscope.files
1143                 cscope -b -q -k
1144
1145 SYSTEM_MAP = \
1146                 $(NM) $1 | \
1147                 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1148                 LC_ALL=C sort
1149 System.map:     u-boot
1150                 @$(call SYSTEM_MAP,$<) > $@
1151
1152 checkdtc:
1153         @if test $(call dtc-version) -lt 0104; then \
1154                 echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
1155                 false; \
1156         fi
1157
1158 #########################################################################
1159
1160 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1161 # R_AARCH64_RELATIVE (64-bit).
1162 checkarmreloc: u-boot
1163         @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1164                 grep R_A | sort -u`"; \
1165         if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1166                  "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1167                 echo "$< contains unexpected relocations: $$RELOC"; \
1168                 false; \
1169         fi
1170
1171 env: scripts_basic
1172         $(Q)$(MAKE) $(build)=tools/$@
1173
1174 tools-only: scripts_basic $(version_h) $(timestamp_h)
1175         $(Q)$(MAKE) $(build)=tools
1176
1177 tools-all: export HOST_TOOLS_ALL=y
1178 tools-all: env tools ;
1179
1180 cross_tools: export CROSS_BUILD_TOOLS=y
1181 cross_tools: tools ;
1182
1183 .PHONY : CHANGELOG
1184 CHANGELOG:
1185         git log --no-merges U-Boot-1_1_5.. | \
1186         unexpand -a | sed -e 's/\s\s*$$//' > $@
1187
1188 include/license.h: tools/bin2header COPYING
1189         cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h
1190 #########################################################################
1191
1192 ###
1193 # Cleaning is done on three levels.
1194 # make clean     Delete most generated files
1195 #                Leave enough to build external modules
1196 # make mrproper  Delete the current configuration, and all generated files
1197 # make distclean Remove editor backup files, patch leftover files and the like
1198
1199 # Directories & files removed with 'make clean'
1200 CLEAN_DIRS  += $(MODVERDIR)
1201 CLEAN_FILES += u-boot.lds include/bmp_logo.h include/bmp_logo_data.h \
1202                include/autoconf.mk* include/spl-autoconf.mk \
1203                include/tpl-autoconf.mk
1204
1205 # Directories & files removed with 'make clobber'
1206 CLOBBER_DIRS  += $(patsubst %,spl/%, $(filter-out Makefile, \
1207                  $(shell ls -1 spl 2>/dev/null))) \
1208                  tpl
1209 CLOBBER_FILES += u-boot* MLO* SPL System.map nand_spl/u-boot*
1210
1211 # Directories & files removed with 'make mrproper'
1212 MRPROPER_DIRS  += include/config include/generated          \
1213                   .tmp_objdiff
1214 MRPROPER_FILES += .config .config.old \
1215                   tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1216                   include/config.h include/config.mk
1217
1218 # clean - Delete most, but leave enough to build external modules
1219 #
1220 clean: rm-dirs  := $(CLEAN_DIRS)
1221 clean: rm-files := $(CLEAN_FILES)
1222
1223 clean-dirs      := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
1224
1225 clean-dirs      := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
1226
1227 PHONY += $(clean-dirs) clean archclean
1228 $(clean-dirs):
1229         $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1230
1231 # TODO: Do not use *.cfgtmp
1232 clean: $(clean-dirs)
1233         $(call cmd,rmdirs)
1234         $(call cmd,rmfiles)
1235         @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1236                 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1237                 -o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
1238                 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1239                 -o -name '*.symtypes' -o -name 'modules.order' \
1240                 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1241                 -o -name '*.gcno' \) -type f -print | xargs rm -f
1242         @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1243                 -path './nand_spl/*' -type l -print | xargs rm -f
1244
1245 # clobber
1246 #
1247 clobber: rm-dirs  := $(CLOBBER_DIRS)
1248 clobber: rm-files := $(CLOBBER_FILES)
1249
1250 PHONY += clobber
1251
1252 clobber: clean
1253         $(call cmd,rmdirs)
1254         $(call cmd,rmfiles)
1255
1256 # mrproper - Delete all generated files, including .config
1257 #
1258 mrproper: rm-dirs  := $(wildcard $(MRPROPER_DIRS))
1259 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1260 mrproper-dirs      := $(addprefix _mrproper_,scripts)
1261
1262 PHONY += $(mrproper-dirs) mrproper archmrproper
1263 $(mrproper-dirs):
1264         $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1265
1266 mrproper: clobber $(mrproper-dirs)
1267         $(call cmd,rmdirs)
1268         $(call cmd,rmfiles)
1269         @rm -f arch/*/include/asm/arch arch/*/include/asm/proc
1270
1271 # distclean
1272 #
1273 PHONY += distclean
1274
1275 distclean: mrproper
1276         @find $(srctree) $(RCS_FIND_IGNORE) \
1277                 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1278                 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1279                 -o -name '.*.rej' -o -name '*%' -o -name 'core' \
1280                 -o -name '*.pyc' \) \
1281                 -type f -print | xargs rm -f
1282
1283 backup:
1284         F=`basename $(srctree)` ; cd .. ; \
1285         gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1286
1287 help:
1288         @echo  'Cleaning targets:'
1289         @echo  '  clean           - Remove most generated files but keep the config and'
1290         @echo  '                    necessities for testing u-boot'
1291         @echo  '  clobber         - Remove most generated files but keep the config'
1292         @echo  '  mrproper        - Remove all generated files + config + various backup files'
1293         @echo  '  distclean       - mrproper + remove editor backup and patch files'
1294         @echo  ''
1295 # uncomment after adding Kconfig feature
1296 #       @echo  'Configuration targets:'
1297 #       @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1298 #       @echo  ''
1299         @echo  'Other generic targets:'
1300         @echo  '  all             - Build all necessary images depending on configuration'
1301         @echo  '  u-boot          - Build the bare u-boot'
1302         @echo  '  dir/            - Build all files in dir and below'
1303         @echo  '  dir/file.[oisS] - Build specified target only'
1304         @echo  '  dir/file.lst    - Build specified mixed source/assembly target only'
1305         @echo  '                    (requires a recent binutils and recent build (System.map))'
1306         @echo  '  tags/TAGS       - Generate tags file for editors'
1307         @echo  '  cscope          - Generate cscope index'
1308         @echo  '  ubootrelease    - Output the release version string'
1309         @echo  '  ubootversion    - Output the version stored in Makefile'
1310         @echo  ''
1311         @echo  'Static analysers'
1312         @echo  '  checkstack      - Generate a list of stack hogs'
1313         @echo  ''
1314         @echo  'Documentation targets:'
1315         @$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
1316         @echo  ''
1317         @echo  '  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1318         @echo  '  make V=2   [targets] 2 => give reason for rebuild of target'
1319         @echo  '  make O=dir [targets] Locate all output files in "dir", including .config'
1320         @echo  '  make C=1   [targets] Check all c source with $$CHECK (sparse by default)'
1321         @echo  '  make C=2   [targets] Force check of all c source with $$CHECK'
1322         @echo  '  make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1323         @echo  '  make W=n   [targets] Enable extra gcc checks, n=1,2,3 where'
1324         @echo  '                1: warnings which may be relevant and do not occur too often'
1325         @echo  '                2: warnings which occur quite often but may still be relevant'
1326         @echo  '                3: more obscure warnings, can most likely be ignored'
1327         @echo  '                Multiple levels can be combined with W=12 or W=123'
1328         @echo  ''
1329         @echo  'Execute "make" or "make all" to build all targets marked with [*] '
1330         @echo  'For further info see the ./README file'
1331
1332
1333 # Documentation targets
1334 # ---------------------------------------------------------------------------
1335 %docs: scripts_basic FORCE
1336         $(Q)$(MAKE) $(build)=scripts build_docproc
1337         $(Q)$(MAKE) $(build)=doc/DocBook $@
1338
1339 # Dummies...
1340 PHONY += prepare scripts
1341 prepare: ;
1342 scripts: ;
1343
1344 endif #ifeq ($(config-targets),1)
1345 endif #ifeq ($(mixed-targets),1)
1346
1347 PHONY += checkstack ubootrelease ubootversion
1348
1349 checkstack:
1350         $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1351         $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1352
1353 ubootrelease:
1354         @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1355
1356 ubootversion:
1357         @echo $(UBOOTVERSION)
1358
1359 # Single targets
1360 # ---------------------------------------------------------------------------
1361 # Single targets are compatible with:
1362 # - build with mixed source and output
1363 # - build with separate output dir 'make O=...'
1364 # - external modules
1365 #
1366 #  target-dir => where to store outputfile
1367 #  build-dir  => directory in kernel source tree to use
1368
1369 ifeq ($(KBUILD_EXTMOD),)
1370         build-dir  = $(patsubst %/,%,$(dir $@))
1371         target-dir = $(dir $@)
1372 else
1373         zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1374         build-dir  = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1375         target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1376 endif
1377
1378 %.s: %.c prepare scripts FORCE
1379         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1380 %.i: %.c prepare scripts FORCE
1381         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1382 %.o: %.c prepare scripts FORCE
1383         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1384 %.lst: %.c prepare scripts FORCE
1385         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1386 %.s: %.S prepare scripts FORCE
1387         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1388 %.o: %.S prepare scripts FORCE
1389         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1390 %.symtypes: %.c prepare scripts FORCE
1391         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1392
1393 # Modules
1394 /: prepare scripts FORCE
1395         $(cmd_crmodverdir)
1396         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1397         $(build)=$(build-dir)
1398 %/: prepare scripts FORCE
1399         $(cmd_crmodverdir)
1400         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1401         $(build)=$(build-dir)
1402 %.ko: prepare scripts FORCE
1403         $(cmd_crmodverdir)
1404         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1)   \
1405         $(build)=$(build-dir) $(@:.ko=.o)
1406         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1407
1408 # FIXME Should go into a make.lib or something
1409 # ===========================================================================
1410
1411 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN   $(wildcard $(rm-dirs)))
1412       cmd_rmdirs = rm -rf $(rm-dirs)
1413
1414 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files)))
1415       cmd_rmfiles = rm -f $(rm-files)
1416
1417 # read all saved command lines
1418
1419 targets := $(wildcard $(sort $(targets)))
1420 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1421
1422 ifneq ($(cmd_files),)
1423   $(cmd_files): ;       # Do not try to update included dependency files
1424   include $(cmd_files)
1425 endif
1426
1427 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1428 # Usage:
1429 # $(Q)$(MAKE) $(clean)=dir
1430 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1431
1432 endif   # skip-makefile
1433
1434 PHONY += FORCE
1435 FORCE:
1436
1437 # Declare the contents of the .PHONY variable as phony.  We keep that
1438 # information in a variable so we can use it in if_changed and friends.
1439 .PHONY: $(PHONY)