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 = -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 := $(O)
 110 endif
 111
 112 ifeq ("$(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 cd $(KBUILD_OUTPUT) && /bin/pwd)
 128 $(if $(KBUILD_OUTPUT),, \
 129      $(error output directory "$(saved-output)" does not exist))
 130
 131 PHONY += $(MAKECMDGOALS) sub-make
 132
 133 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
 134         @:
 135
 136 sub-make: FORCE
 137         $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
 138         KBUILD_SRC=$(CURDIR) \
 139         KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
 140         $(filter-out _all sub-make,$(MAKECMDGOALS))
 141
 142 # Leave processing to above invocation of make
 143 skip-makefile := 1
 144 endif # ifneq ($(KBUILD_OUTPUT),)
 145 endif # ifeq ($(KBUILD_SRC),)
 146
 147 # We process the rest of the Makefile if this is the final invocation of make
 148 ifeq ($(skip-makefile),)
 149
 150 # If building an external module we do not care about the all: rule
 151 # but instead _all depend on modules
 152 PHONY += all
 153 ifeq ($(KBUILD_EXTMOD),)
 154 _all: all
 155 else
 156 _all: modules
 157 endif
 158
 159 srctree         := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
 160 objtree         := $(CURDIR)
 161 src             := $(srctree)
 162 obj             := $(objtree)
 163
 164 VPATH           := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
 165
 166 export srctree objtree VPATH
 167
 168 OBJTREE         := $(objtree)
 169 SPLTREE         := $(OBJTREE)/spl
 170 TPLTREE         := $(OBJTREE)/tpl
 171 SRCTREE         := $(srctree)
 172 TOPDIR          := $(SRCTREE)
 173 export  TOPDIR SRCTREE OBJTREE SPLTREE TPLTREE
 174
 175 MKCONFIG        := $(SRCTREE)/mkconfig
 176 export MKCONFIG
 177
 178 # Make sure CDPATH settings don't interfere
 179 unexport CDPATH
 180
 181 #########################################################################
 182
 183 HOSTARCH := $(shell uname -m | \
 184         sed -e s/i.86/x86/ \
 185             -e s/sun4u/sparc64/ \
 186             -e s/arm.*/arm/ \
 187             -e s/sa110/arm/ \
 188             -e s/ppc64/powerpc/ \
 189             -e s/ppc/powerpc/ \
 190             -e s/macppc/powerpc/\
 191             -e s/sh.*/sh/)
 192
 193 HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
 194             sed -e 's/\(cygwin\).*/cygwin/')
 195
 196 export  HOSTARCH HOSTOS
 197
 198 # Deal with colliding definitions from tcsh etc.
 199 VENDOR=
 200
 201 #########################################################################
 202
 203 # set default to nothing for native builds
 204 ifeq ($(HOSTARCH),$(ARCH))
 205 CROSS_COMPILE ?=
 206 endif
 207
 208 # SHELL used by kbuild
 209 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
 210           else if [ -x /bin/bash ]; then echo /bin/bash; \
 211           else echo sh; fi ; fi)
 212
 213 HOSTCC       = gcc
 214 HOSTCFLAGS   = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
 215
 216 ifeq ($(HOSTOS),cygwin)
 217 HOSTCFLAGS      += -ansi
 218 endif
 219
 220 # Mac OS X / Darwin's C preprocessor is Apple specific.  It
 221 # generates numerous errors and warnings.  We want to bypass it
 222 # and use GNU C's cpp.  To do this we pass the -traditional-cpp
 223 # option to the compiler.  Note that the -traditional-cpp flag
 224 # DOES NOT have the same semantics as GNU C's flag, all it does
 225 # is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
 226 #
 227 # Apple's linker is similar, thanks to the new 2 stage linking
 228 # multiple symbol definitions are treated as errors, hence the
 229 # -multiply_defined suppress option to turn off this error.
 230 #
 231 ifeq ($(HOSTOS),darwin)
 232 # get major and minor product version (e.g. '10' and '6' for Snow Leopard)
 233 DARWIN_MAJOR_VERSION    = $(shell sw_vers -productVersion | cut -f 1 -d '.')
 234 DARWIN_MINOR_VERSION    = $(shell sw_vers -productVersion | cut -f 2 -d '.')
 235
 236 os_x_before     = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
 237         $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
 238
 239 # Snow Leopards build environment has no longer restrictions as described above
 240 HOSTCC       = $(call os_x_before, 10, 5, "cc", "gcc")
 241 HOSTCFLAGS  += $(call os_x_before, 10, 4, "-traditional-cpp")
 242 HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
 243 endif
 244
 245 # Decide whether to build built-in, modular, or both.
 246 # Normally, just do built-in.
 247
 248 KBUILD_MODULES :=
 249 KBUILD_BUILTIN := 1
 250
 251 #       If we have only "make modules", don't compile built-in objects.
 252 #       When we're building modules with modversions, we need to consider
 253 #       the built-in objects during the descend as well, in order to
 254 #       make sure the checksums are up to date before we record them.
 255
 256 ifeq ($(MAKECMDGOALS),modules)
 257   KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
 258 endif
 259
 260 #       If we have "make <whatever> modules", compile modules
 261 #       in addition to whatever we do anyway.
 262 #       Just "make" or "make all" shall build modules as well
 263
 264 # U-Boot does not need modules
 265 #ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
 266 #  KBUILD_MODULES := 1
 267 #endif
 268
 269 #ifeq ($(MAKECMDGOALS),)
 270 #  KBUILD_MODULES := 1
 271 #endif
 272
 273 export KBUILD_MODULES KBUILD_BUILTIN
 274 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
 275
 276 # Beautify output
 277 # ---------------------------------------------------------------------------
 278 #
 279 # Normally, we echo the whole command before executing it. By making
 280 # that echo $($(quiet)$(cmd)), we now have the possibility to set
 281 # $(quiet) to choose other forms of output instead, e.g.
 282 #
 283 #         quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
 284 #         cmd_cc_o_c       = $(CC) $(c_flags) -c -o $@ $<
 285 #
 286 # If $(quiet) is empty, the whole command will be printed.
 287 # If it is set to "quiet_", only the short version will be printed.
 288 # If it is set to "silent_", nothing will be printed at all, since
 289 # the variable $(silent_cmd_cc_o_c) doesn't exist.
 290 #
 291 # A simple variant is to prefix commands with $(Q) - that's useful
 292 # for commands that shall be hidden in non-verbose mode.
 293 #
 294 #       $(Q)ln $@ :<
 295 #
 296 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
 297 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
 298
 299 ifeq ($(KBUILD_VERBOSE),1)
 300   quiet =
 301   Q =
 302 else
 303   quiet=quiet_
 304   Q = @
 305 endif
 306
 307 # If the user is running make -s (silent mode), suppress echoing of
 308 # commands
 309
 310 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
 311   quiet=silent_
 312 endif
 313
 314 export quiet Q KBUILD_VERBOSE
 315
 316
 317 # Look for make include files relative to root of kernel src
 318 MAKEFLAGS += --include-dir=$(srctree)
 319
 320 # We need some generic definitions (do not try to remake the file).
 321 $(srctree)/scripts/Kbuild.include: ;
 322 include $(srctree)/scripts/Kbuild.include
 323
 324 # Make variables (CC, etc...)
 325
 326 AS              = $(CROSS_COMPILE)as
 327 # Always use GNU ld
 328 ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
 329 LD              = $(CROSS_COMPILE)ld.bfd
 330 else
 331 LD              = $(CROSS_COMPILE)ld
 332 endif
 333 CC              = $(CROSS_COMPILE)gcc
 334 CPP             = $(CC) -E
 335 AR              = $(CROSS_COMPILE)ar
 336 NM              = $(CROSS_COMPILE)nm
 337 LDR             = $(CROSS_COMPILE)ldr
 338 STRIP           = $(CROSS_COMPILE)strip
 339 OBJCOPY         = $(CROSS_COMPILE)objcopy
 340 OBJDUMP         = $(CROSS_COMPILE)objdump
 341 AWK             = awk
 342 RANLIB          = $(CROSS_COMPILE)RANLIB
 343 DTC             = dtc
 344 CHECK           = sparse
 345
 346 CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
 347                   -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
 348
 349 KBUILD_CPPFLAGS := -D__KERNEL__
 350
 351 KBUILD_CFLAGS   := -Wall -Wstrict-prototypes \
 352                    -Wno-format-security \
 353                    -fno-builtin -ffreestanding
 354 KBUILD_AFLAGS   := -D__ASSEMBLY__
 355
 356 # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
 357 UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
 358 UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
 359
 360 export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
 361 export ARCH CPU BOARD VENDOR SOC
 362 export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
 363 export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
 364 export MAKE AWK
 365 export DTC CHECK CHECKFLAGS
 366
 367 export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE
 368 export KBUILD_CFLAGS KBUILD_AFLAGS
 369
 370 # When compiling out-of-tree modules, put MODVERDIR in the module
 371 # tree rather than in the kernel tree. The kernel tree might
 372 # even be read-only.
 373 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
 374
 375 # Files to ignore in find ... statements
 376
 377 RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS \
 378                    -o -name .pc -o -name .hg -o -name .git \) -prune -o
 379 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
 380                          --exclude CVS --exclude .pc --exclude .hg --exclude .git
 381
 382 # ===========================================================================
 383 # Rules shared between *config targets and build targets
 384
 385 # Basic helpers built in scripts/
 386 PHONY += scripts_basic
 387 scripts_basic:
 388         $(Q)$(MAKE) $(build)=scripts/basic
 389         $(Q)rm -f .tmp_quiet_recordmcount
 390
 391 # To avoid any implicit rule to kick in, define an empty command.
 392 scripts/basic/%: scripts_basic ;
 393
 394 PHONY += outputmakefile
 395 # outputmakefile generates a Makefile in the output directory, if using a
 396 # separate output directory. This allows convenient use of make in the
 397 # output directory.
 398 outputmakefile:
 399 ifneq ($(KBUILD_SRC),)
 400         $(Q)ln -fsn $(srctree) source
 401         $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
 402             $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
 403 endif
 404
 405 # To make sure we do not include .config for any of the *config targets
 406 # catch them early, and hand them over to scripts/kconfig/Makefile
 407 # It is allowed to specify more targets when calling make, including
 408 # mixing *config targets and build targets.
 409 # For example 'make oldconfig all'.
 410 # Detect when mixed targets is specified, and make a second invocation
 411 # of make so .config is not included in this case either (for *config).
 412
 413 version_h := include/generated/version_autogenerated.h
 414 timestamp_h := include/generated/timestamp_autogenerated.h
 415
 416 no-dot-config-targets := clean clobber mrproper distclean \
 417                          help %docs check% coccicheck \
 418                          ubootversion backup
 419
 420 config-targets := 0
 421 mixed-targets  := 0
 422 dot-config     := 1
 423
 424 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
 425         ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
 426                 dot-config := 0
 427         endif
 428 endif
 429
 430 ifeq ($(KBUILD_EXTMOD),)
 431         ifneq ($(filter config %config,$(MAKECMDGOALS)),)
 432                 config-targets := 1
 433                 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
 434                         mixed-targets := 1
 435                 endif
 436         endif
 437 endif
 438
 439 ifeq ($(mixed-targets),1)
 440 # ===========================================================================
 441 # We're called with mixed targets (*config and build targets).
 442 # Handle them one by one.
 443
 444 PHONY += $(MAKECMDGOALS) build-one-by-one
 445
 446 $(MAKECMDGOALS): build-one-by-one
 447         @:
 448
 449 build-one-by-one:
 450         $(Q)set -e; \
 451         for i in $(MAKECMDGOALS); do \
 452                 $(MAKE) -f $(srctree)/Makefile $$i; \
 453         done
 454
 455 else
 456 ifeq ($(config-targets),1)
 457 # ===========================================================================
 458 # *config targets only - make sure prerequisites are updated, and descend
 459 # in scripts/kconfig to make the *config target
 460
 461 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
 462 # KBUILD_DEFCONFIG may point out an alternative default configuration
 463 # used for 'make defconfig'
 464
 465 %_config:: outputmakefile
 466         @$(MKCONFIG) -A $(@:_config=)
 467
 468 else
 469 # ===========================================================================
 470 # Build targets only - this includes vmlinux, arch specific targets, clean
 471 # targets and others. In general all targets except *config targets.
 472
 473 # load ARCH, BOARD, and CPU configuration
 474 -include include/config.mk
 475
 476 ifeq ($(dot-config),1)
 477 # Read in config
 478 -include include/autoconf.mk
 479 -include include/autoconf.mk.dep
 480
 481 # load other configuration
 482 include $(srctree)/config.mk
 483
 484 ifeq ($(wildcard include/config.mk),)
 485 $(error "System not configured - see README")
 486 endif
 487
 488 ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
 489 ifneq ($(CONFIG_SYS_GENERIC_BOARD),)
 490 $(error Your architecture does not support generic board. \
 491 Please undefined CONFIG_SYS_GENERIC_BOARD in your board config file)
 492 endif
 493 endif
 494
 495 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
 496 # that (or fail if absent).  Otherwise, search for a linker script in a
 497 # standard location.
 498
 499 LDSCRIPT_MAKEFILE_DIR = $(dir $(LDSCRIPT))
 500
 501 ifndef LDSCRIPT
 502         #LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
 503         ifdef CONFIG_SYS_LDSCRIPT
 504                 # need to strip off double quotes
 505                 LDSCRIPT := $(CONFIG_SYS_LDSCRIPT:"%"=%)
 506         endif
 507 endif
 508
 509 # If there is no specified link script, we look in a number of places for it
 510 ifndef LDSCRIPT
 511         ifeq ($(CONFIG_NAND_U_BOOT),y)
 512                 LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
 513                 ifeq ($(wildcard $(LDSCRIPT)),)
 514                         LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot-nand.lds
 515                 endif
 516         endif
 517         ifeq ($(wildcard $(LDSCRIPT)),)
 518                 LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
 519         endif
 520         ifeq ($(wildcard $(LDSCRIPT)),)
 521                 LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot.lds
 522         endif
 523         ifeq ($(wildcard $(LDSCRIPT)),)
 524                 LDSCRIPT := $(TOPDIR)/arch/$(ARCH)/cpu/u-boot.lds
 525                 # We don't expect a Makefile here
 526                 LDSCRIPT_MAKEFILE_DIR =
 527         endif
 528         ifeq ($(wildcard $(LDSCRIPT)),)
 529 $(error could not find linker script)
 530         endif
 531 endif
 532
 533 else
 534
 535
 536 endif # $(dot-config)
 537
 538 KBUILD_CFLAGS += -Os #-fomit-frame-pointer
 539
 540 ifdef BUILD_TAG
 541 KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
 542 endif
 543
 544 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
 545
 546 KBUILD_CFLAGS   += -g
 547 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
 548 # option to the assembler.
 549 KBUILD_AFLAGS   += -g
 550
 551 # Report stack usage if supported
 552 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
 553         KBUILD_CFLAGS += -fstack-usage
 554 endif
 555
 556 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
 557
 558 # turn jbsr into jsr for m68k
 559 ifeq ($(ARCH),m68k)
 560 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
 561 KBUILD_AFLAGS += -Wa,-gstabs,-S
 562 endif
 563 endif
 564
 565 ifneq ($(CONFIG_SYS_TEXT_BASE),)
 566 KBUILD_CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
 567 endif
 568
 569 export CONFIG_SYS_TEXT_BASE
 570
 571 # Use UBOOTINCLUDE when you must reference the include/ directory.
 572 # Needed to be compatible with the O= option
 573 UBOOTINCLUDE    :=
 574 ifneq ($(OBJTREE),$(SRCTREE))
 575 UBOOTINCLUDE    += -I$(OBJTREE)/include
 576 endif
 577 UBOOTINCLUDE    += -I$(srctree)/include \
 578                 -I$(srctree)/arch/$(ARCH)/include
 579
 580 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
 581 CHECKFLAGS     += $(NOSTDINC_FLAGS)
 582
 583 # FIX ME
 584 cpp_flags := $(KBUILD_CPPFLAGS) $(CPPFLAGS) $(UBOOTINCLUDE) $(NOSTDINC_FLAGS)
 585 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
 586
 587 #########################################################################
 588 # U-Boot objects....order is important (i.e. start must be first)
 589
 590 head-y := $(CPUDIR)/start.o
 591 head-$(CONFIG_4xx) += arch/powerpc/cpu/ppc4xx/resetvec.o
 592 head-$(CONFIG_MPC85xx) += arch/powerpc/cpu/mpc85xx/resetvec.o
 593
 594 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
 595
 596 libs-y += lib/
 597 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
 598 libs-y += $(CPUDIR)/
 599 ifdef SOC
 600 libs-y += $(CPUDIR)/$(SOC)/
 601 endif
 602 libs-$(CONFIG_OF_EMBED) += dts/
 603 libs-y += arch/$(ARCH)/lib/
 604 libs-y += fs/
 605 libs-y += net/
 606 libs-y += disk/
 607 libs-y += drivers/
 608 libs-y += drivers/dma/
 609 libs-y += drivers/gpio/
 610 libs-y += drivers/i2c/
 611 libs-y += drivers/input/
 612 libs-y += drivers/mmc/
 613 libs-y += drivers/mtd/
 614 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
 615 libs-y += drivers/mtd/onenand/
 616 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
 617 libs-y += drivers/mtd/spi/
 618 libs-y += drivers/net/
 619 libs-y += drivers/net/phy/
 620 libs-y += drivers/pci/
 621 libs-y += drivers/power/ \
 622         drivers/power/fuel_gauge/ \
 623         drivers/power/mfd/ \
 624         drivers/power/pmic/ \
 625         drivers/power/battery/
 626 libs-y += drivers/spi/
 627 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
 628 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
 629 libs-y += drivers/serial/
 630 libs-y += drivers/usb/eth/
 631 libs-y += drivers/usb/gadget/
 632 libs-y += drivers/usb/host/
 633 libs-y += drivers/usb/musb/
 634 libs-y += drivers/usb/musb-new/
 635 libs-y += drivers/usb/phy/
 636 libs-y += drivers/usb/ulpi/
 637 libs-y += common/
 638 libs-y += lib/libfdt/
 639 libs-$(CONFIG_API) += api/
 640 libs-$(CONFIG_HAS_POST) += post/
 641 libs-y += test/
 642
 643 ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35 mxs vf610))
 644 libs-y += arch/$(ARCH)/imx-common/
 645 endif
 646
 647 libs-$(CONFIG_ARM) += arch/arm/cpu/
 648 libs-$(CONFIG_PPC) += arch/powerpc/cpu/
 649
 650 libs-y += board/$(BOARDDIR)/
 651
 652 libs-y := $(sort $(libs-y))
 653
 654 u-boot-dirs     := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
 655
 656 u-boot-alldirs  := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
 657
 658 libs-y          := $(patsubst %/, %/built-in.o, $(libs-y))
 659
 660 u-boot-init := $(head-y)
 661 u-boot-main := $(libs-y)
 662
 663
 664 # Add GCC lib
 665 ifdef USE_PRIVATE_LIBGCC
 666 ifeq ("$(USE_PRIVATE_LIBGCC)", "yes")
 667 PLATFORM_LIBGCC = $(OBJTREE)/arch/$(ARCH)/lib/lib.a
 668 else
 669 PLATFORM_LIBGCC = -L $(USE_PRIVATE_LIBGCC) -lgcc
 670 endif
 671 else
 672 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
 673 endif
 674 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
 675 export PLATFORM_LIBS
 676
 677 # Special flags for CPP when processing the linker script.
 678 # Pass the version down so we can handle backwards compatibility
 679 # on the fly.
 680 LDPPFLAGS += \
 681         -include $(TOPDIR)/include/u-boot/u-boot.lds.h \
 682         -DCPUDIR=$(CPUDIR) \
 683         $(shell $(LD) --version | \
 684           sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
 685
 686 #########################################################################
 687 #########################################################################
 688
 689 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
 690 BOARD_SIZE_CHECK = \
 691         @actual=`wc -c $@ | awk '{print $$1}'`; \
 692         limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
 693         if test $$actual -gt $$limit; then \
 694                 echo "$@ exceeds file size limit:" >&2 ; \
 695                 echo "  limit:  $$limit bytes" >&2 ; \
 696                 echo "  actual: $$actual bytes" >&2 ; \
 697                 echo "  excess: $$((actual - limit)) bytes" >&2; \
 698                 exit 1; \
 699         fi
 700 else
 701 BOARD_SIZE_CHECK =
 702 endif
 703
 704 # Statically apply RELA-style relocations (currently arm64 only)
 705 ifneq ($(CONFIG_STATIC_RELA),)
 706 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
 707 DO_STATIC_RELA = \
 708         start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
 709         end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
 710         tools/relocate-rela $(2) $(3) $$start $$end
 711 else
 712 DO_STATIC_RELA =
 713 endif
 714
 715 # Always append ALL so that arch config.mk's can add custom ones
 716 ALL-y += u-boot.srec u-boot.bin System.map
 717
 718 ALL-$(CONFIG_NAND_U_BOOT) += u-boot-nand.bin
 719 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
 720 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
 721 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
 722 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
 723 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
 724 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.bin
 725 ifneq ($(CONFIG_SPL_TARGET),)
 726 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
 727 endif
 728 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
 729
 730 # enable combined SPL/u-boot/dtb rules for tegra
 731 ifneq ($(CONFIG_TEGRA),)
 732 ifeq ($(CONFIG_SPL),y)
 733 ifeq ($(CONFIG_OF_SEPARATE),y)
 734 ALL-y += u-boot-dtb-tegra.bin
 735 else
 736 ALL-y += u-boot-nodtb-tegra.bin
 737 endif
 738 endif
 739 endif
 740
 741 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
 742 ifneq ($(CONFIG_SYS_TEXT_BASE),)
 743 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
 744 endif
 745
 746 quiet_cmd_objcopy = OBJCOPY $@
 747 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
 748
 749 quiet_cmd_mkimage = UIMAGE  $@
 750 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
 751         $(if $(KBUILD_VERBOSE:1=), >/dev/null)
 752
 753 quiet_cmd_cat = CAT     $@
 754 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
 755
 756 append = cat $(filter-out $< $(PHONY), $^) >> $@
 757
 758 quiet_cmd_pad_cat = CAT     $@
 759 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
 760
 761 all:            $(ALL-y)
 762
 763 PHONY += dtbs
 764 dtbs dts/dt.dtb: checkdtc u-boot
 765         $(Q)$(MAKE) $(build)=dts dtbs
 766
 767 u-boot-dtb.bin: u-boot.bin dts/dt.dtb FORCE
 768         $(call if_changed,cat)
 769
 770 OBJCOPYFLAGS_u-boot.hex := -O ihex
 771
 772 OBJCOPYFLAGS_u-boot.srec := -O srec
 773
 774 u-boot.hex u-boot.srec: u-boot FORCE
 775         $(call if_changed,objcopy)
 776
 777 OBJCOPYFLAGS_u-boot.bin := -O binary
 778
 779 u-boot.bin: u-boot FORCE
 780         $(call if_changed,objcopy)
 781         $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
 782         $(BOARD_SIZE_CHECK)
 783
 784 u-boot.ldr:     u-boot
 785                 $(CREATE_LDR_ENV)
 786                 $(LDR) -T $(CONFIG_BFIN_CPU) -c $@ $< $(LDR_FLAGS)
 787                 $(BOARD_SIZE_CHECK)
 788
 789 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
 790
 791 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
 792
 793 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
 794         $(call if_changed,objcopy)
 795
 796 #
 797 # U-Boot entry point, needed for booting of full-blown U-Boot
 798 # from the SPL U-Boot version.
 799 #
 800 ifndef CONFIG_SYS_UBOOT_START
 801 CONFIG_SYS_UBOOT_START := 0
 802 endif
 803
 804 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
 805         -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
 806         -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
 807
 808 MKIMAGEFLAGS_u-boot.kwb = -n $(CONFIG_SYS_KWD_CONFIG) -T kwbimage \
 809                 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
 810
 811 MKIMAGEFLAGS_u-boot.pbl = -n $(CONFIG_SYS_FSL_PBL_RCW) \
 812                 -R $(CONFIG_SYS_FSL_PBL_PBI) -T pblimage
 813
 814 u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE
 815         $(call if_changed,mkimage)
 816
 817 u-boot.imx: u-boot.bin
 818         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 819
 820 u-boot.sha1:    u-boot.bin
 821                 tools/ubsha1 u-boot.bin
 822
 823 u-boot.dis:     u-boot
 824                 $(OBJDUMP) -d $< > $@
 825
 826 ifdef CONFIG_TPL
 827 SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
 828 else
 829 SPL_PAYLOAD := u-boot.bin
 830 endif
 831
 832 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
 833                                    --pad-to=$(CONFIG_SPL_PAD_TO)
 834 u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
 835         $(call if_changed,pad_cat)
 836
 837 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
 838                                    --pad-to=$(CONFIG_TPL_PAD_TO)
 839 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
 840         $(call if_changed,pad_cat)
 841
 842 SPL: spl/u-boot-spl.bin FORCE
 843         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 844
 845 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
 846         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 847
 848 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
 849
 850 u-boot.ubl: u-boot-with-spl.bin FORCE
 851         $(call if_changed,mkimage)
 852
 853 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
 854         $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
 855         -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
 856 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
 857         $(call if_changed,mkimage)
 858
 859 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_MAX_SIZE)
 860 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
 861         $(call if_changed,pad_cat)
 862
 863 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
 864         $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs $(objtree)/u-boot.sb
 865
 866 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
 867 # Both images are created using mkimage (crc etc), so that the ROM
 868 # bootloader can check its integrity. Padding needs to be done to the
 869 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
 870 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
 871 # The resulting image containing both U-Boot images is called u-boot.spr
 872 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
 873         -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
 874 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
 875         $(call if_changed,mkimage)
 876
 877 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
 878                           --gap-fill=0xff
 879 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
 880         $(call if_changed,pad_cat)
 881
 882 ifneq ($(CONFIG_TEGRA),)
 883 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
 884 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
 885         $(call if_changed,pad_cat)
 886
 887 ifeq ($(CONFIG_OF_SEPARATE),y)
 888 u-boot-dtb-tegra.bin: u-boot-nodtb-tegra.bin dts/dt.dtb FORCE
 889         $(call if_changed,cat)
 890 endif
 891 endif
 892
 893 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
 894         $(call if_changed,cat)
 895
 896 # PPC4xx needs the SPL at the end of the image, since the reset vector
 897 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
 898 # and need to introduce a new build target with the full blown U-Boot
 899 # at the start padded up to the start of the SPL image. And then concat
 900 # the SPL image to the end.
 901
 902 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
 903         --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
 904 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
 905         $(call if_changed,pad_cat)
 906
 907 # Create a new ELF from a raw binary file.  This is useful for arm64
 908 # where static relocation needs to be performed on the raw binary,
 909 # but certain simulators only accept an ELF file (but don't do the
 910 # relocation).
 911 # FIXME refactor dts/Makefile to share target/arch detection
 912 u-boot.elf: u-boot.bin
 913         @$(OBJCOPY)  -B aarch64 -I binary -O elf64-littleaarch64 \
 914                 $< u-boot-elf.o
 915         @$(LD) u-boot-elf.o -o $@ \
 916                 --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
 917                 -Ttext=$(CONFIG_SYS_TEXT_BASE)
 918
 919 # Rule to link u-boot
 920 # May be overridden by arch/$(ARCH)/config.mk
 921 quiet_cmd_u-boot__ ?= LD      $@
 922       cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
 923       -T u-boot.lds $(u-boot-init)                             \
 924       --start-group $(u-boot-main) --end-group                 \
 925       $(PLATFORM_LIBS) -Map u-boot.map
 926
 927 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds
 928         $(call if_changed,u-boot__)
 929 ifeq ($(CONFIG_KALLSYMS),y)
 930         smap=`$(call SYSTEM_MAP,u-boot) | \
 931                 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
 932         $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
 933                 -c $(srctree)/common/system_map.c -o common/system_map.o
 934         $(call cmd,u-boot__) common/system_map.o
 935 endif
 936
 937 # The actual objects are generated when descending,
 938 # make sure no implicit rule kicks in
 939 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
 940
 941 # Handle descending into subdirectories listed in $(vmlinux-dirs)
 942 # Preset locale variables to speed up the build process. Limit locale
 943 # tweaks to this spot to avoid wrong language settings when running
 944 # make menuconfig etc.
 945 # Error messages still appears in the original language
 946
 947 PHONY += $(u-boot-dirs)
 948 $(u-boot-dirs): prepare scripts
 949         $(Q)$(MAKE) $(build)=$@
 950
 951 tools: prepare
 952 # The "tools" are needed early
 953 $(filter-out tools, $(u-boot-dirs)): tools
 954 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
 955 # is "yes"), so compile examples after U-Boot is compiled.
 956 examples: $(filter-out examples, $(u-boot-dirs))
 957
 958 define filechk_uboot.release
 959         echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
 960 endef
 961
 962 # Store (new) UBOOTRELEASE string in include/config/uboot.release
 963 include/config/uboot.release: Makefile FORCE
 964         $(call filechk,uboot.release)
 965
 966
 967 # Things we need to do before we recursively start building the kernel
 968 # or the modules are listed in "prepare".
 969 # A multi level approach is used. prepareN is processed before prepareN-1.
 970 # archprepare is used in arch Makefiles and when processed asm symlink,
 971 # version.h and scripts_basic is processed / created.
 972
 973 # Listed in dependency order
 974 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
 975
 976 # prepare3 is used to check if we are building in a separate output directory,
 977 # and if so do:
 978 # 1) Check that make has not been executed in the kernel src $(srctree)
 979 prepare3: include/config/uboot.release
 980 ifneq ($(KBUILD_SRC),)
 981         @$(kecho) '  Using $(srctree) as source for u-boot'
 982         $(Q)if [ -f $(srctree)/include/config.mk ]; then \
 983                 echo >&2 "  $(srctree) is not clean, please run 'make mrproper'"; \
 984                 echo >&2 "  in the '$(srctree)' directory.";\
 985                 /bin/false; \
 986         fi;
 987 endif
 988
 989 # prepare2 creates a makefile if using a separate output directory
 990 prepare2: prepare3 outputmakefile
 991
 992 prepare1: prepare2 $(version_h) $(timestamp_h)
 993         @:
 994
 995 archprepare: prepare1 scripts_basic
 996
 997 prepare0: archprepare FORCE
 998         $(Q)$(MAKE) $(build)=.
 999
1000 # All the preparing..
1001 prepare: prepare0
1002
1003 # Generate some files
1004 # ---------------------------------------------------------------------------
1005
1006 define filechk_version.h
1007         (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1008         echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1009         echo \#define CC_VERSION_STRING \"$$($(CC) --version | head -n 1)\"; \
1010         echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; )
1011 endef
1012
1013 define filechk_timestamp.h
1014         (LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1015         LC_ALL=C date +'#define U_BOOT_TIME "%T"')
1016 endef
1017
1018 $(version_h): $(srctree)/Makefile FORCE
1019         $(call filechk,version.h)
1020
1021 $(timestamp_h): $(srctree)/Makefile FORCE
1022         $(call filechk,timestamp.h)
1023
1024 #
1025 # Auto-generate the autoconf.mk file (which is included by all makefiles)
1026 #
1027 # This target actually generates 2 files; autoconf.mk and autoconf.mk.dep.
1028 # the dep file is only include in this top level makefile to determine when
1029 # to regenerate the autoconf.mk file.
1030
1031 quiet_cmd_autoconf_dep = GEN     $@
1032       cmd_autoconf_dep = $(CC) -x c -DDO_DEPS_ONLY -M $(c_flags) \
1033         -MQ include/autoconf.mk $(srctree)/include/common.h > $@ || rm $@
1034
1035 include/autoconf.mk.dep: include/config.h include/common.h
1036         $(call cmd,autoconf_dep)
1037
1038 quiet_cmd_autoconf = GEN     $@
1039       cmd_autoconf = \
1040         $(CPP) $(c_flags) -DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && \
1041         sed -n -f $(srctree)/tools/scripts/define2mk.sed $@.tmp > $@; \
1042         rm $@.tmp
1043
1044 include/autoconf.mk: include/config.h
1045         $(call cmd,autoconf)
1046
1047 # ---------------------------------------------------------------------------
1048
1049 PHONY += depend dep
1050 depend dep:
1051         @echo '*** Warning: make $@ is unnecessary now.'
1052
1053 # ---------------------------------------------------------------------------
1054 quiet_cmd_cpp_lds = LDS     $@
1055 cmd_cpp_lds = $(CPP) $(cpp_flags) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ \
1056                 -x assembler-with-cpp -P -o $@ $<
1057
1058 u-boot.lds: $(LDSCRIPT) prepare FORCE
1059         $(call if_changed,cpp_lds)
1060
1061 PHONY += nand_spl
1062 nand_spl: prepare
1063         $(Q)$(MAKE) $(build)=nand_spl/board/$(BOARDDIR) all
1064
1065 nand_spl/u-boot-spl-16k.bin: nand_spl
1066         @:
1067
1068 u-boot-nand.bin: nand_spl/u-boot-spl-16k.bin u-boot.bin FORCE
1069         $(call if_changed,cat)
1070
1071 spl/u-boot-spl.bin: spl/u-boot-spl
1072         @:
1073 spl/u-boot-spl: tools prepare
1074         $(Q)$(MAKE) obj=spl -f $(srctree)/spl/Makefile all
1075
1076 tpl/u-boot-tpl.bin: tools prepare
1077         $(Q)$(MAKE) obj=tpl -f $(srctree)/spl/Makefile all CONFIG_TPL_BUILD=y
1078
1079 TAG_SUBDIRS := $(u-boot-dirs) include
1080
1081 FIND := find
1082 FINDFLAGS := -L
1083
1084 tags ctags:
1085                 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1086                                                 -name '*.[chS]' -print`
1087
1088 etags:
1089                 etags -a -o $(obj)etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1090                                                 -name '*.[chS]' -print`
1091 cscope:
1092                 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1093                                                 cscope.files
1094                 cscope -b -q -k
1095
1096 SYSTEM_MAP = \
1097                 $(NM) $1 | \
1098                 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1099                 LC_ALL=C sort
1100 System.map:     u-boot
1101                 @$(call SYSTEM_MAP,$<) > $@
1102
1103 checkthumb:
1104         @if test $(call cc-version) -lt 0404; then \
1105                 echo -n '*** Your GCC does not produce working '; \
1106                 echo 'binaries in THUMB mode.'; \
1107                 echo '*** Your board is configured for THUMB mode.'; \
1108                 false; \
1109         fi
1110
1111 # GCC 3.x is reported to have problems generating the type of relocation
1112 # that U-Boot wants.
1113 # See http://lists.denx.de/pipermail/u-boot/2012-September/135156.html
1114 checkgcc4:
1115         @if test $(call cc-version) -lt 0400; then \
1116                 echo -n '*** Your GCC is too old, please upgrade to GCC 4.x or newer'; \
1117                 false; \
1118         fi
1119
1120 checkdtc:
1121         @if test $(call dtc-version) -lt 0104; then \
1122                 echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
1123                 false; \
1124         fi
1125
1126 #########################################################################
1127
1128 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1129 # R_AARCH64_RELATIVE (64-bit).
1130 checkarmreloc: u-boot
1131         @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1132                 grep R_A | sort -u`"; \
1133         if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1134                  "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1135                 echo "$< contains unexpected relocations: $$RELOC"; \
1136                 false; \
1137         fi
1138
1139 env: scripts_basic
1140         $(Q)$(MAKE) $(build)=tools/$@
1141
1142 tools-all: HOST_TOOLS_ALL=y
1143 tools-all: env tools ;
1144
1145 .PHONY : CHANGELOG
1146 CHANGELOG:
1147         git log --no-merges U-Boot-1_1_5.. | \
1148         unexpand -a | sed -e 's/\s\s*$$//' > $@
1149
1150 include/license.h: tools/bin2header COPYING
1151         cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h
1152 #########################################################################
1153
1154 ###
1155 # Cleaning is done on three levels.
1156 # make clean     Delete most generated files
1157 #                Leave enough to build external modules
1158 # make mrproper  Delete the current configuration, and all generated files
1159 # make distclean Remove editor backup files, patch leftover files and the like
1160
1161 # Directories & files removed with 'make clean'
1162 CLEAN_DIRS  += $(MODVERDIR)
1163 CLEAN_FILES += u-boot.lds include/bmp_logo.h include/bmp_logo_data.h \
1164                board/*/config.tmp board/*/*/config.tmp \
1165                include/autoconf.mk* include/spl-autoconf.mk \
1166                include/tpl-autoconf.mk
1167
1168 # Directories & files removed with 'make clobber'
1169 CLOBBER_DIRS  += $(patsubst %,spl/%, $(filter-out Makefile, \
1170                  $(shell ls -1 spl 2>/dev/null))) \
1171                  tpl
1172 CLOBBER_FILES += u-boot* MLO* SPL System.map nand_spl/u-boot*
1173
1174 # Directories & files removed with 'make mrproper'
1175 MRPROPER_DIRS  += include/config include/generated
1176 MRPROPER_FILES += .config .config.old \
1177                   tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1178                   include/config.h include/config.mk
1179
1180 # clean - Delete most, but leave enough to build external modules
1181 #
1182 clean: rm-dirs  := $(CLEAN_DIRS)
1183 clean: rm-files := $(CLEAN_FILES)
1184
1185 clean-dirs      := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $f/Makefile),$f))
1186
1187 clean-dirs      := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
1188
1189 PHONY += $(clean-dirs) clean archclean
1190 $(clean-dirs):
1191         $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1192
1193 # TODO: Do not use *.cfgtmp
1194 clean: $(clean-dirs)
1195         $(call cmd,rmdirs)
1196         $(call cmd,rmfiles)
1197         @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1198                 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1199                 -o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
1200                 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1201                 -o -name '*.symtypes' -o -name 'modules.order' \
1202                 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1203                 -o -name '*.gcno' \) -type f -print | xargs rm -f
1204         @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1205                 -path './nand_spl/*' -type l -print | xargs rm -f
1206
1207 # clobber
1208 #
1209 clobber: rm-dirs  := $(CLOBBER_DIRS)
1210 clobber: rm-files := $(CLOBBER_FILES)
1211
1212 PHONY += clobber
1213
1214 clobber: clean
1215         $(call cmd,rmdirs)
1216         $(call cmd,rmfiles)
1217
1218 # mrproper - Delete all generated files, including .config
1219 #
1220 mrproper: rm-dirs  := $(wildcard $(MRPROPER_DIRS))
1221 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1222 mrproper-dirs      := $(addprefix _mrproper_,scripts)
1223
1224 PHONY += $(mrproper-dirs) mrproper archmrproper
1225 $(mrproper-dirs):
1226         $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1227
1228 mrproper: clobber $(mrproper-dirs)
1229         $(call cmd,rmdirs)
1230         $(call cmd,rmfiles)
1231         @rm -f arch/*/include/asm/arch arch/*/include/asm/proc
1232
1233 # distclean
1234 #
1235 PHONY += distclean
1236
1237 distclean: mrproper
1238         @find $(srctree) $(RCS_FIND_IGNORE) \
1239                 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1240                 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1241                 -o -name '.*.rej' \
1242                 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
1243                 -type f -print | xargs rm -f
1244
1245 backup:
1246         F=`basename $(TOPDIR)` ; cd .. ; \
1247         gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1248
1249 help:
1250         @echo  'Cleaning targets:'
1251         @echo  '  clean           - Remove most generated files but keep the config and'
1252         @echo  '                    necessities for testing u-boot'
1253         @echo  '  clobber         - Remove most generated files but keep the config'
1254         @echo  '  mrproper        - Remove all generated files + config + various backup files'
1255         @echo  '  distclean       - mrproper + remove editor backup and patch files'
1256         @echo  ''
1257 # uncomment after adding Kconfig feature
1258 #       @echo  'Configuration targets:'
1259 #       @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1260 #       @echo  ''
1261         @echo  'Other generic targets:'
1262         @echo  '  all             - Build all necessary images depending on configuration'
1263         @echo  '  u-boot          - Build the bare u-boot'
1264         @echo  '  dir/            - Build all files in dir and below'
1265         @echo  '  dir/file.[oisS] - Build specified target only'
1266         @echo  '  dir/file.lst    - Build specified mixed source/assembly target only'
1267         @echo  '                    (requires a recent binutils and recent build (System.map))'
1268         @echo  '  tags/TAGS       - Generate tags file for editors'
1269         @echo  '  cscope          - Generate cscope index'
1270         @echo  '  ubootrelease    - Output the release version string'
1271         @echo  '  ubootversion    - Output the version stored in Makefile'
1272         @echo  ''
1273         @echo  'Static analysers'
1274         @echo  '  checkstack      - Generate a list of stack hogs'
1275         @echo  ''
1276         @echo  'Documentation targets:'
1277         @$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
1278         @echo  ''
1279         @echo  '  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1280         @echo  '  make V=2   [targets] 2 => give reason for rebuild of target'
1281         @echo  '  make O=dir [targets] Locate all output files in "dir", including .config'
1282         @echo  '  make C=1   [targets] Check all c source with $$CHECK (sparse by default)'
1283         @echo  '  make C=2   [targets] Force check of all c source with $$CHECK'
1284         @echo  '  make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1285         @echo  '  make W=n   [targets] Enable extra gcc checks, n=1,2,3 where'
1286         @echo  '                1: warnings which may be relevant and do not occur too often'
1287         @echo  '                2: warnings which occur quite often but may still be relevant'
1288         @echo  '                3: more obscure warnings, can most likely be ignored'
1289         @echo  '                Multiple levels can be combined with W=12 or W=123'
1290         @echo  ''
1291         @echo  'Execute "make" or "make all" to build all targets marked with [*] '
1292         @echo  'For further info see the ./README file'
1293
1294
1295 # Documentation targets
1296 # ---------------------------------------------------------------------------
1297 %docs: scripts_basic FORCE
1298         $(Q)$(MAKE) $(build)=scripts build_docproc
1299         $(Q)$(MAKE) $(build)=doc/DocBook $@
1300
1301 # Dummies...
1302 PHONY += prepare scripts
1303 prepare: ;
1304 scripts: ;
1305
1306 endif #ifeq ($(config-targets),1)
1307 endif #ifeq ($(mixed-targets),1)
1308
1309 PHONY += checkstack ubootrelease ubootversion
1310
1311 checkstack:
1312         $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1313         $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1314
1315 ubootrelease:
1316         @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1317
1318 ubootversion:
1319         @echo $(UBOOTVERSION)
1320
1321 # Single targets
1322 # ---------------------------------------------------------------------------
1323 # Single targets are compatible with:
1324 # - build with mixed source and output
1325 # - build with separate output dir 'make O=...'
1326 # - external modules
1327 #
1328 #  target-dir => where to store outputfile
1329 #  build-dir  => directory in kernel source tree to use
1330
1331 ifeq ($(KBUILD_EXTMOD),)
1332         build-dir  = $(patsubst %/,%,$(dir $@))
1333         target-dir = $(dir $@)
1334 else
1335         zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1336         build-dir  = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1337         target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1338 endif
1339
1340 %.s: %.c prepare scripts FORCE
1341         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1342 %.i: %.c prepare scripts FORCE
1343         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1344 %.o: %.c prepare scripts FORCE
1345         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1346 %.lst: %.c prepare scripts FORCE
1347         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1348 %.s: %.S prepare scripts FORCE
1349         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1350 %.o: %.S prepare scripts FORCE
1351         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1352 %.symtypes: %.c prepare scripts FORCE
1353         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1354
1355 # Modules
1356 /: prepare scripts FORCE
1357         $(cmd_crmodverdir)
1358         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1359         $(build)=$(build-dir)
1360 %/: prepare scripts FORCE
1361         $(cmd_crmodverdir)
1362         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1363         $(build)=$(build-dir)
1364 %.ko: prepare scripts FORCE
1365         $(cmd_crmodverdir)
1366         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1)   \
1367         $(build)=$(build-dir) $(@:.ko=.o)
1368         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1369
1370 # FIXME Should go into a make.lib or something
1371 # ===========================================================================
1372
1373 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN   $(wildcard $(rm-dirs)))
1374       cmd_rmdirs = rm -rf $(rm-dirs)
1375
1376 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files)))
1377       cmd_rmfiles = rm -f $(rm-files)
1378
1379 # read all saved command lines
1380
1381 targets := $(wildcard $(sort $(targets)))
1382 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1383
1384 ifneq ($(cmd_files),)
1385   $(cmd_files): ;       # Do not try to update included dependency files
1386   include $(cmd_files)
1387 endif
1388
1389 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1390 # Usage:
1391 # $(Q)$(MAKE) $(clean)=dir
1392 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1393
1394 endif   # skip-makefile
1395
1396 PHONY += FORCE
1397 FORCE:
1398
1399 # Declare the contents of the .PHONY variable as phony.  We keep that
1400 # information in a variable so we can use it in if_changed and friends.
1401 .PHONY: $(PHONY)