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   1# SPDX-License-Identifier: GPL-2.0+
   2
   3VERSION = 2021
   4PATCHLEVEL = 07
   5SUBLEVEL =
   6EXTRAVERSION =
   7NAME =
   8
   9# *DOCUMENTATION*
  10# To see a list of typical targets execute "make help"
  11# More info can be located in ./README
  12# Comments in this file are targeted only to the developer, do not
  13# expect to learn how to build the kernel reading this file.
  14
  15# o Do not use make's built-in rules and variables
  16#   (this increases performance and avoids hard-to-debug behaviour);
  17# o Look for make include files relative to root of kernel src
  18MAKEFLAGS += -rR --include-dir=$(CURDIR)
  19
  20# Determine target architecture for the sandbox
  21include include/host_arch.h
  22ifeq ("", "$(CROSS_COMPILE)")
  23  MK_ARCH="${shell uname -m}"
  24else
  25  MK_ARCH="${shell echo $(CROSS_COMPILE) | sed -n 's/^\s*\([^\/]*\/\)*\([^-]*\)-\S*/\2/p'}"
  26endif
  27unexport HOST_ARCH
  28ifeq ("x86_64", $(MK_ARCH))
  29  export HOST_ARCH=$(HOST_ARCH_X86_64)
  30else ifneq (,$(findstring $(MK_ARCH), "i386" "i486" "i586" "i686"))
  31  export HOST_ARCH=$(HOST_ARCH_X86)
  32else ifneq (,$(findstring $(MK_ARCH), "aarch64" "armv8l"))
  33  export HOST_ARCH=$(HOST_ARCH_AARCH64)
  34else ifneq (,$(findstring $(MK_ARCH), "arm" "armv7" "armv7l"))
  35  export HOST_ARCH=$(HOST_ARCH_ARM)
  36else ifeq ("riscv32", $(MK_ARCH))
  37  export HOST_ARCH=$(HOST_ARCH_RISCV32)
  38else ifeq ("riscv64", $(MK_ARCH))
  39  export HOST_ARCH=$(HOST_ARCH_RISCV64)
  40endif
  41undefine MK_ARCH
  42
  43# Avoid funny character set dependencies
  44unexport LC_ALL
  45LC_COLLATE=C
  46LC_NUMERIC=C
  47export LC_COLLATE LC_NUMERIC
  48
  49# Avoid interference with shell env settings
  50unexport GREP_OPTIONS
  51
  52# We are using a recursive build, so we need to do a little thinking
  53# to get the ordering right.
  54#
  55# Most importantly: sub-Makefiles should only ever modify files in
  56# their own directory. If in some directory we have a dependency on
  57# a file in another dir (which doesn't happen often, but it's often
  58# unavoidable when linking the built-in.o targets which finally
  59# turn into vmlinux), we will call a sub make in that other dir, and
  60# after that we are sure that everything which is in that other dir
  61# is now up to date.
  62#
  63# The only cases where we need to modify files which have global
  64# effects are thus separated out and done before the recursive
  65# descending is started. They are now explicitly listed as the
  66# prepare rule.
  67
  68# Beautify output
  69# ---------------------------------------------------------------------------
  70#
  71# Normally, we echo the whole command before executing it. By making
  72# that echo $($(quiet)$(cmd)), we now have the possibility to set
  73# $(quiet) to choose other forms of output instead, e.g.
  74#
  75#         quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
  76#         cmd_cc_o_c       = $(CC) $(c_flags) -c -o $@ $<
  77#
  78# If $(quiet) is empty, the whole command will be printed.
  79# If it is set to "quiet_", only the short version will be printed.
  80# If it is set to "silent_", nothing will be printed at all, since
  81# the variable $(silent_cmd_cc_o_c) doesn't exist.
  82#
  83# A simple variant is to prefix commands with $(Q) - that's useful
  84# for commands that shall be hidden in non-verbose mode.
  85#
  86#       $(Q)ln $@ :<
  87#
  88# If KBUILD_VERBOSE equals 0 then the above command will be hidden.
  89# If KBUILD_VERBOSE equals 1 then the above command is displayed.
  90#
  91# To put more focus on warnings, be less verbose as default
  92# Use 'make V=1' to see the full commands
  93
  94ifeq ("$(origin V)", "command line")
  95  KBUILD_VERBOSE = $(V)
  96endif
  97ifndef KBUILD_VERBOSE
  98  KBUILD_VERBOSE = 0
  99endif
 100
 101ifeq ($(KBUILD_VERBOSE),1)
 102  quiet =
 103  Q =
 104else
 105  quiet=quiet_
 106  Q = @
 107endif
 108
 109# If the user is running make -s (silent mode), suppress echoing of
 110# commands
 111
 112ifneq ($(filter 4.%,$(MAKE_VERSION)),)  # make-4
 113ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
 114  quiet=silent_
 115endif
 116else                                    # make-3.8x
 117ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
 118  quiet=silent_
 119endif
 120endif
 121
 122export quiet Q KBUILD_VERBOSE
 123
 124# kbuild supports saving output files in a separate directory.
 125# To locate output files in a separate directory two syntaxes are supported.
 126# In both cases the working directory must be the root of the kernel src.
 127# 1) O=
 128# Use "make O=dir/to/store/output/files/"
 129#
 130# 2) Set KBUILD_OUTPUT
 131# Set the environment variable KBUILD_OUTPUT to point to the directory
 132# where the output files shall be placed.
 133# export KBUILD_OUTPUT=dir/to/store/output/files/
 134# make
 135#
 136# The O= assignment takes precedence over the KBUILD_OUTPUT environment
 137# variable.
 138
 139# KBUILD_SRC is set on invocation of make in OBJ directory
 140# KBUILD_SRC is not intended to be used by the regular user (for now)
 141ifeq ($(KBUILD_SRC),)
 142
 143# OK, Make called in directory where kernel src resides
 144# Do we want to locate output files in a separate directory?
 145ifeq ("$(origin O)", "command line")
 146  KBUILD_OUTPUT := $(O)
 147endif
 148
 149# That's our default target when none is given on the command line
 150PHONY := _all
 151_all:
 152
 153# Cancel implicit rules on top Makefile
 154$(CURDIR)/Makefile Makefile: ;
 155
 156ifneq ($(KBUILD_OUTPUT),)
 157# Invoke a second make in the output directory, passing relevant variables
 158# check that the output directory actually exists
 159saved-output := $(KBUILD_OUTPUT)
 160KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
 161                                                                && /bin/pwd)
 162$(if $(KBUILD_OUTPUT),, \
 163     $(error failed to create output directory "$(saved-output)"))
 164
 165PHONY += $(MAKECMDGOALS) sub-make
 166
 167$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
 168        @:
 169
 170sub-make: FORCE
 171        $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
 172        -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS))
 173
 174# Leave processing to above invocation of make
 175skip-makefile := 1
 176endif # ifneq ($(KBUILD_OUTPUT),)
 177endif # ifeq ($(KBUILD_SRC),)
 178
 179# We process the rest of the Makefile if this is the final invocation of make
 180ifeq ($(skip-makefile),)
 181
 182# Do not print "Entering directory ...",
 183# but we want to display it when entering to the output directory
 184# so that IDEs/editors are able to understand relative filenames.
 185MAKEFLAGS += --no-print-directory
 186
 187# Call a source code checker (by default, "sparse") as part of the
 188# C compilation.
 189#
 190# Use 'make C=1' to enable checking of only re-compiled files.
 191# Use 'make C=2' to enable checking of *all* source files, regardless
 192# of whether they are re-compiled or not.
 193#
 194# See the file "doc/sparse.txt" for more details, including
 195# where to get the "sparse" utility.
 196
 197ifeq ("$(origin C)", "command line")
 198  KBUILD_CHECKSRC = $(C)
 199endif
 200ifndef KBUILD_CHECKSRC
 201  KBUILD_CHECKSRC = 0
 202endif
 203
 204# Use make M=dir to specify directory of external module to build
 205# Old syntax make ... SUBDIRS=$PWD is still supported
 206# Setting the environment variable KBUILD_EXTMOD take precedence
 207ifdef SUBDIRS
 208  KBUILD_EXTMOD ?= $(SUBDIRS)
 209endif
 210
 211ifeq ("$(origin M)", "command line")
 212  KBUILD_EXTMOD := $(M)
 213endif
 214
 215# If building an external module we do not care about the all: rule
 216# but instead _all depend on modules
 217PHONY += all
 218ifeq ($(KBUILD_EXTMOD),)
 219_all: all
 220else
 221_all: modules
 222endif
 223
 224ifeq ($(KBUILD_SRC),)
 225        # building in the source tree
 226        srctree := .
 227else
 228        ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
 229                # building in a subdirectory of the source tree
 230                srctree := ..
 231        else
 232                srctree := $(KBUILD_SRC)
 233        endif
 234endif
 235objtree         := .
 236src             := $(srctree)
 237obj             := $(objtree)
 238
 239VPATH           := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
 240
 241export srctree objtree VPATH
 242
 243# Make sure CDPATH settings don't interfere
 244unexport CDPATH
 245
 246#########################################################################
 247
 248HOSTARCH := $(shell uname -m | \
 249        sed -e s/i.86/x86/ \
 250            -e s/sun4u/sparc64/ \
 251            -e s/arm.*/arm/ \
 252            -e s/sa110/arm/ \
 253            -e s/ppc64/powerpc/ \
 254            -e s/ppc/powerpc/ \
 255            -e s/macppc/powerpc/\
 256            -e s/sh.*/sh/)
 257
 258HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
 259            sed -e 's/\(cygwin\).*/cygwin/')
 260
 261export  HOSTARCH HOSTOS
 262
 263#########################################################################
 264
 265# set default to nothing for native builds
 266ifeq ($(HOSTARCH),$(ARCH))
 267CROSS_COMPILE ?=
 268endif
 269
 270KCONFIG_CONFIG  ?= .config
 271export KCONFIG_CONFIG
 272
 273# SHELL used by kbuild
 274CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
 275          else if [ -x /bin/bash ]; then echo /bin/bash; \
 276          else echo sh; fi ; fi)
 277
 278HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null)
 279HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null)
 280HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null)
 281
 282HOSTCC       = cc
 283HOSTCXX      = c++
 284KBUILD_HOSTCFLAGS   := -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \
 285                $(HOST_LFS_CFLAGS) $(HOSTCFLAGS)
 286KBUILD_HOSTCXXFLAGS := -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS)
 287KBUILD_HOSTLDFLAGS  := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS)
 288KBUILD_HOSTLDLIBS   := $(HOST_LFS_LIBS) $(HOSTLDLIBS)
 289
 290# With the move to GCC 6, we have implicitly upgraded our language
 291# standard to GNU11 (see https://gcc.gnu.org/gcc-5/porting_to.html).
 292# Some Linux distributions (including RHEL7, SLES13, Debian 8) still
 293# have older compilers as their default, so we make it explicit for
 294# these that our host tools are GNU11 (i.e. C11 w/ GNU extensions).
 295CSTD_FLAG := -std=gnu11
 296ifeq ($(HOSTOS),linux)
 297KBUILD_HOSTCFLAGS += $(CSTD_FLAG)
 298endif
 299
 300ifeq ($(HOSTOS),cygwin)
 301KBUILD_HOSTCFLAGS       += -ansi
 302endif
 303
 304# Mac OS X / Darwin's C preprocessor is Apple specific.  It
 305# generates numerous errors and warnings.  We want to bypass it
 306# and use GNU C's cpp.  To do this we pass the -traditional-cpp
 307# option to the compiler.  Note that the -traditional-cpp flag
 308# DOES NOT have the same semantics as GNU C's flag, all it does
 309# is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
 310#
 311# Apple's linker is similar, thanks to the new 2 stage linking
 312# multiple symbol definitions are treated as errors, hence the
 313# -multiply_defined suppress option to turn off this error.
 314#
 315ifeq ($(HOSTOS),darwin)
 316# get major and minor product version (e.g. '10' and '6' for Snow Leopard)
 317DARWIN_MAJOR_VERSION    = $(shell sw_vers -productVersion | cut -f 1 -d '.')
 318DARWIN_MINOR_VERSION    = $(shell sw_vers -productVersion | cut -f 2 -d '.')
 319
 320os_x_before     = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
 321        $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
 322
 323os_x_after = $(shell if [ $(DARWIN_MAJOR_VERSION) -ge $(1) -a \
 324        $(DARWIN_MINOR_VERSION) -ge $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)  
 325
 326# Snow Leopards build environment has no longer restrictions as described above
 327HOSTCC       = $(call os_x_before, 10, 5, "cc", "gcc")
 328KBUILD_HOSTCFLAGS  += $(call os_x_before, 10, 4, "-traditional-cpp")
 329KBUILD_HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
 330
 331# macOS Mojave (10.14.X) 
 332# Undefined symbols for architecture x86_64: "_PyArg_ParseTuple"
 333KBUILD_HOSTLDFLAGS += $(call os_x_after, 10, 14, "-lpython -dynamclib", "")
 334endif
 335
 336# Decide whether to build built-in, modular, or both.
 337# Normally, just do built-in.
 338
 339KBUILD_MODULES :=
 340KBUILD_BUILTIN := 1
 341
 342# If we have only "make modules", don't compile built-in objects.
 343# When we're building modules with modversions, we need to consider
 344# the built-in objects during the descend as well, in order to
 345# make sure the checksums are up to date before we record them.
 346
 347ifeq ($(MAKECMDGOALS),modules)
 348  KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
 349endif
 350
 351# If we have "make <whatever> modules", compile modules
 352# in addition to whatever we do anyway.
 353# Just "make" or "make all" shall build modules as well
 354
 355# U-Boot does not need modules
 356#ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
 357#  KBUILD_MODULES := 1
 358#endif
 359
 360#ifeq ($(MAKECMDGOALS),)
 361#  KBUILD_MODULES := 1
 362#endif
 363
 364# Check ths size of a binary:
 365# Args:
 366#   $1: File to check
 367#   #2: Size limit in bytes (decimal or 0xhex)
 368define size_check
 369        actual=$$( wc -c $1 | awk '{print $$1}'); \
 370        limit=$$( printf "%d" $2 ); \
 371        if test $$actual -gt $$limit; then \
 372                echo "$1 exceeds file size limit:" >&2; \
 373                echo "  limit:  $$(printf %#x $$limit) bytes" >&2; \
 374                echo "  actual: $$(printf %#x $$actual) bytes" >&2; \
 375                echo "  excess: $$(printf %#x $$((actual - limit))) bytes" >&2;\
 376                exit 1; \
 377        fi
 378endef
 379export size_check
 380
 381export KBUILD_MODULES KBUILD_BUILTIN
 382export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
 383
 384# We need some generic definitions (do not try to remake the file).
 385scripts/Kbuild.include: ;
 386include scripts/Kbuild.include
 387
 388# Make variables (CC, etc...)
 389
 390AS              = $(CROSS_COMPILE)as
 391# Always use GNU ld
 392ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
 393LD              = $(CROSS_COMPILE)ld.bfd
 394else
 395LD              = $(CROSS_COMPILE)ld
 396endif
 397CC              = $(CROSS_COMPILE)gcc
 398CPP             = $(CC) -E
 399AR              = $(CROSS_COMPILE)ar
 400NM              = $(CROSS_COMPILE)nm
 401LDR             = $(CROSS_COMPILE)ldr
 402STRIP           = $(CROSS_COMPILE)strip
 403OBJCOPY         = $(CROSS_COMPILE)objcopy
 404OBJDUMP         = $(CROSS_COMPILE)objdump
 405LEX             = flex
 406YACC            = bison
 407AWK             = awk
 408PERL            = perl
 409PYTHON          ?= python
 410PYTHON2         = python2
 411PYTHON3         ?= python3
 412DTC             ?= $(objtree)/scripts/dtc/dtc
 413CHECK           = sparse
 414
 415CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
 416                  -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
 417
 418KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__
 419
 420KBUILD_CFLAGS   := -Wall -Wstrict-prototypes \
 421                   -Wno-format-security \
 422                   -fno-builtin -ffreestanding $(CSTD_FLAG)
 423KBUILD_CFLAGS   += -fshort-wchar -fno-strict-aliasing
 424KBUILD_AFLAGS   := -D__ASSEMBLY__
 425KBUILD_LDFLAGS  :=
 426
 427ifeq ($(cc-name),clang)
 428ifneq ($(CROSS_COMPILE),)
 429CLANG_TARGET    := --target=$(notdir $(CROSS_COMPILE:%-=%))
 430GCC_TOOLCHAIN_DIR := $(dir $(shell which $(LD)))
 431CLANG_PREFIX    := --prefix=$(GCC_TOOLCHAIN_DIR)
 432GCC_TOOLCHAIN   := $(realpath $(GCC_TOOLCHAIN_DIR)/..)
 433endif
 434ifneq ($(GCC_TOOLCHAIN),)
 435CLANG_GCC_TC    := --gcc-toolchain=$(GCC_TOOLCHAIN)
 436endif
 437KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) $(CLANG_PREFIX)
 438KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) $(CLANG_PREFIX)
 439KBUILD_CFLAGS += $(call cc-option, -no-integrated-as)
 440KBUILD_AFLAGS += $(call cc-option, -no-integrated-as)
 441endif
 442
 443# Don't generate position independent code
 444KBUILD_CFLAGS   += $(call cc-option,-fno-PIE)
 445KBUILD_AFLAGS   += $(call cc-option,-fno-PIE)
 446
 447# Read UBOOTRELEASE from include/config/uboot.release (if it exists)
 448UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
 449UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
 450
 451export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
 452export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
 453export CONFIG_SHELL HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC
 454export CPP AR NM LDR STRIP OBJCOPY OBJDUMP KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS
 455export MAKE LEX YACC AWK PERL PYTHON PYTHON2 PYTHON3
 456export HOSTCXX KBUILD_HOSTCXXFLAGS CHECK CHECKFLAGS DTC DTC_FLAGS
 457
 458export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS
 459export KBUILD_CFLAGS KBUILD_AFLAGS
 460
 461export CC_VERSION_TEXT := $(shell $(CC) --version | head -n 1)
 462
 463# When compiling out-of-tree modules, put MODVERDIR in the module
 464# tree rather than in the kernel tree. The kernel tree might
 465# even be read-only.
 466export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
 467
 468# Files to ignore in find ... statements
 469
 470export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o    \
 471                          -name CVS -o -name .pc -o -name .hg -o -name .git \) \
 472                          -prune -o
 473export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
 474                         --exclude CVS --exclude .pc --exclude .hg --exclude .git
 475
 476# ===========================================================================
 477# Rules shared between *config targets and build targets
 478
 479# Basic helpers built in scripts/
 480PHONY += scripts_basic
 481scripts_basic:
 482        $(Q)$(MAKE) $(build)=scripts/basic
 483        $(Q)rm -f .tmp_quiet_recordmcount
 484
 485# To avoid any implicit rule to kick in, define an empty command.
 486scripts/basic/%: scripts_basic ;
 487
 488PHONY += outputmakefile
 489# outputmakefile generates a Makefile in the output directory, if using a
 490# separate output directory. This allows convenient use of make in the
 491# output directory.
 492outputmakefile:
 493ifneq ($(KBUILD_SRC),)
 494        $(Q)ln -fsn $(srctree) source
 495        $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
 496            $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
 497endif
 498
 499# To make sure we do not include .config for any of the *config targets
 500# catch them early, and hand them over to scripts/kconfig/Makefile
 501# It is allowed to specify more targets when calling make, including
 502# mixing *config targets and build targets.
 503# For example 'make oldconfig all'.
 504# Detect when mixed targets is specified, and make a second invocation
 505# of make so .config is not included in this case either (for *config).
 506
 507version_h := include/generated/version_autogenerated.h
 508timestamp_h := include/generated/timestamp_autogenerated.h
 509defaultenv_h := include/generated/defaultenv_autogenerated.h
 510dt_h := include/generated/dt.h
 511
 512no-dot-config-targets := clean clobber mrproper distclean \
 513                         help %docs check% coccicheck \
 514                         ubootversion backup tests check qcheck tcheck
 515
 516config-targets := 0
 517mixed-targets  := 0
 518dot-config     := 1
 519
 520ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
 521        ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
 522                dot-config := 0
 523        endif
 524endif
 525
 526ifeq ($(KBUILD_EXTMOD),)
 527        ifneq ($(filter config %config,$(MAKECMDGOALS)),)
 528                config-targets := 1
 529                ifneq ($(words $(MAKECMDGOALS)),1)
 530                        mixed-targets := 1
 531                endif
 532        endif
 533endif
 534
 535ifeq ($(mixed-targets),1)
 536# ===========================================================================
 537# We're called with mixed targets (*config and build targets).
 538# Handle them one by one.
 539
 540PHONY += $(MAKECMDGOALS) __build_one_by_one
 541
 542$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
 543        @:
 544
 545__build_one_by_one:
 546        $(Q)set -e; \
 547        for i in $(MAKECMDGOALS); do \
 548                $(MAKE) -f $(srctree)/Makefile $$i; \
 549        done
 550
 551else
 552ifeq ($(config-targets),1)
 553# ===========================================================================
 554# *config targets only - make sure prerequisites are updated, and descend
 555# in scripts/kconfig to make the *config target
 556
 557KBUILD_DEFCONFIG := sandbox_defconfig
 558export KBUILD_DEFCONFIG KBUILD_KCONFIG
 559
 560config: scripts_basic outputmakefile FORCE
 561        $(Q)$(MAKE) $(build)=scripts/kconfig $@
 562
 563%config: scripts_basic outputmakefile FORCE
 564        $(Q)$(MAKE) $(build)=scripts/kconfig $@
 565
 566else
 567# ===========================================================================
 568# Build targets only - this includes vmlinux, arch specific targets, clean
 569# targets and others. In general all targets except *config targets.
 570
 571# Additional helpers built in scripts/
 572# Carefully list dependencies so we do not try to build scripts twice
 573# in parallel
 574PHONY += scripts
 575scripts: scripts_basic include/config/auto.conf
 576        $(Q)$(MAKE) $(build)=$(@)
 577
 578ifeq ($(dot-config),1)
 579# Read in config
 580-include include/config/auto.conf
 581
 582# Read in dependencies to all Kconfig* files, make sure to run
 583# oldconfig if changes are detected.
 584-include include/config/auto.conf.cmd
 585
 586# To avoid any implicit rule to kick in, define an empty command
 587$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
 588
 589# If .config is newer than include/config/auto.conf, someone tinkered
 590# with it and forgot to run make oldconfig.
 591# if auto.conf.cmd is missing then we are probably in a cleaned tree so
 592# we execute the config step to be sure to catch updated Kconfig files
 593include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
 594        $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig
 595        @# If the following part fails, include/config/auto.conf should be
 596        @# deleted so "make silentoldconfig" will be re-run on the next build.
 597        $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf || \
 598                { rm -f include/config/auto.conf; false; }
 599        @# include/config.h has been updated after "make silentoldconfig".
 600        @# We need to touch include/config/auto.conf so it gets newer
 601        @# than include/config.h.
 602        @# Otherwise, 'make silentoldconfig' would be invoked twice.
 603        $(Q)touch include/config/auto.conf
 604
 605u-boot.cfg spl/u-boot.cfg tpl/u-boot.cfg:
 606        $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf $(@)
 607
 608-include include/autoconf.mk
 609-include include/autoconf.mk.dep
 610
 611# We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf
 612# is up-to-date. When we switch to a different board configuration, old CONFIG
 613# macros are still remaining in include/config/auto.conf. Without the following
 614# gimmick, wrong config.mk would be included leading nasty warnings/errors.
 615ifneq ($(wildcard $(KCONFIG_CONFIG)),)
 616ifneq ($(wildcard include/config/auto.conf),)
 617autoconf_is_old := $(shell find . -path ./$(KCONFIG_CONFIG) -newer \
 618                                                include/config/auto.conf)
 619ifeq ($(autoconf_is_old),)
 620include config.mk
 621include arch/$(ARCH)/Makefile
 622endif
 623endif
 624endif
 625
 626# These are set by the arch-specific config.mk. Make sure they are exported
 627# so they can be used when building an EFI application.
 628export EFI_LDS          # Filename of EFI link script in arch/$(ARCH)/lib
 629export EFI_CRT0         # Filename of EFI CRT0 in arch/$(ARCH)/lib
 630export EFI_RELOC        # Filename of EFU relocation code in arch/$(ARCH)/lib
 631export CFLAGS_EFI       # Compiler flags to add when building EFI app
 632export CFLAGS_NON_EFI   # Compiler flags to remove when building EFI app
 633export EFI_TARGET       # binutils target if EFI is natively supported
 634
 635# If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
 636# that (or fail if absent).  Otherwise, search for a linker script in a
 637# standard location.
 638
 639ifndef LDSCRIPT
 640        #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
 641        ifdef CONFIG_SYS_LDSCRIPT
 642                # need to strip off double quotes
 643                LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
 644        endif
 645endif
 646
 647# If there is no specified link script, we look in a number of places for it
 648ifndef LDSCRIPT
 649        ifeq ($(wildcard $(LDSCRIPT)),)
 650                LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
 651        endif
 652        ifeq ($(wildcard $(LDSCRIPT)),)
 653                LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
 654        endif
 655        ifeq ($(wildcard $(LDSCRIPT)),)
 656                LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
 657        endif
 658endif
 659
 660else
 661# Dummy target needed, because used as prerequisite
 662include/config/auto.conf: ;
 663endif # $(dot-config)
 664
 665#
 666# Xtensa linker script cannot be preprocessed with -ansi because of
 667# preprocessor operations on strings that don't make C identifiers.
 668#
 669ifeq ($(CONFIG_XTENSA),)
 670LDPPFLAGS       += -ansi
 671endif
 672
 673ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
 674KBUILD_CFLAGS   += -Os
 675else
 676KBUILD_CFLAGS   += -O2
 677endif
 678
 679LTO_CFLAGS :=
 680LTO_FINAL_LDFLAGS :=
 681export LTO_CFLAGS LTO_FINAL_LDFLAGS
 682ifdef CONFIG_LTO
 683        ifeq ($(cc-name),clang)
 684                LTO_CFLAGS              += -flto
 685                LTO_FINAL_LDFLAGS       += -flto
 686
 687                AR                      = $(shell $(CC) -print-prog-name=llvm-ar)
 688                NM                      = $(shell $(CC) -print-prog-name=llvm-nm)
 689        else
 690                NPROC                   := $(shell nproc 2>/dev/null || echo 1)
 691                LTO_CFLAGS              += -flto=$(NPROC)
 692                LTO_FINAL_LDFLAGS       += -fuse-linker-plugin -flto=$(NPROC)
 693
 694                # use plugin aware tools
 695                AR                      = $(CROSS_COMPILE)gcc-ar
 696                NM                      = $(CROSS_COMPILE)gcc-nm
 697        endif
 698
 699        CFLAGS_NON_EFI                  += $(LTO_CFLAGS)
 700
 701        KBUILD_CFLAGS                   += $(LTO_CFLAGS)
 702endif
 703
 704ifeq ($(CONFIG_STACKPROTECTOR),y)
 705KBUILD_CFLAGS += $(call cc-option,-fstack-protector-strong)
 706CFLAGS_EFI += $(call cc-option,-fno-stack-protector)
 707else
 708KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
 709endif
 710KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks)
 711
 712# disable stringop warnings in gcc 8+
 713KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation)
 714
 715# Enabled with W=2, disabled by default as noisy
 716KBUILD_CFLAGS += $(call cc-disable-warning, maybe-uninitialized)
 717
 718# change __FILE__ to the relative path from the srctree
 719KBUILD_CFLAGS   += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
 720
 721KBUILD_CFLAGS   += -g
 722# $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
 723# option to the assembler.
 724KBUILD_AFLAGS   += -g
 725
 726# Report stack usage if supported
 727# ARC tools based on GCC 7.1 has an issue with stack usage
 728# with naked functions, see commit message for more details
 729ifndef CONFIG_ARC
 730ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
 731        KBUILD_CFLAGS += -fstack-usage
 732endif
 733endif
 734
 735KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
 736KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
 737
 738ifeq ($(cc-name),clang)
 739KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
 740KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
 741KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
 742KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
 743# Quiet clang warning: comparison of unsigned expression < 0 is always false
 744KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
 745# CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the
 746# source of a reference will be _MergedGlobals and not on of the whitelisted names.
 747# See modpost pattern 2
 748KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
 749KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
 750else
 751
 752# These warnings generated too much noise in a regular build.
 753# Use make W=1 to enable them (see scripts/Makefile.extrawarn)
 754KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
 755endif
 756
 757# Prohibit date/time macros, which would make the build non-deterministic
 758KBUILD_CFLAGS   += $(call cc-option,-Werror=date-time)
 759
 760include scripts/Makefile.extrawarn
 761
 762# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
 763KBUILD_CPPFLAGS += $(KCPPFLAGS)
 764KBUILD_AFLAGS += $(KAFLAGS)
 765KBUILD_CFLAGS += $(KCFLAGS)
 766
 767KBUILD_HOSTCFLAGS += $(if $(CONFIG_TOOLS_DEBUG),-g)
 768
 769# Use UBOOTINCLUDE when you must reference the include/ directory.
 770# Needed to be compatible with the O= option
 771UBOOTINCLUDE    := \
 772        -Iinclude \
 773        $(if $(KBUILD_SRC), -I$(srctree)/include) \
 774        $(if $(CONFIG_$(SPL_)SYS_THUMB_BUILD), \
 775                $(if $(CONFIG_HAS_THUMB2), \
 776                        $(if $(CONFIG_CPU_V7M), \
 777                                -I$(srctree)/arch/arm/thumb1/include), \
 778                        -I$(srctree)/arch/arm/thumb1/include)) \
 779        -I$(srctree)/arch/$(ARCH)/include \
 780        -include $(srctree)/include/linux/kconfig.h
 781
 782NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
 783
 784# FIX ME
 785cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
 786                                                        $(NOSTDINC_FLAGS)
 787c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
 788
 789#########################################################################
 790# U-Boot objects....order is important (i.e. start must be first)
 791
 792HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
 793
 794libs-y += lib/
 795libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
 796libs-$(CONFIG_OF_EMBED) += dts/
 797libs-y += fs/
 798libs-y += net/
 799libs-y += disk/
 800libs-y += drivers/
 801libs-y += drivers/dma/
 802libs-y += drivers/gpio/
 803libs-y += drivers/i2c/
 804libs-y += drivers/net/
 805libs-y += drivers/net/phy/
 806libs-y += drivers/power/ \
 807        drivers/power/domain/ \
 808        drivers/power/fuel_gauge/ \
 809        drivers/power/mfd/ \
 810        drivers/power/pmic/ \
 811        drivers/power/battery/ \
 812        drivers/power/regulator/
 813libs-y += drivers/spi/
 814libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
 815libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
 816libs-$(CONFIG_SYS_FSL_MMDC) += drivers/ddr/fsl/
 817libs-$(CONFIG_$(SPL_)ALTERA_SDRAM) += drivers/ddr/altera/
 818libs-y += drivers/serial/
 819libs-y += drivers/usb/cdns3/
 820libs-y += drivers/usb/dwc3/
 821libs-y += drivers/usb/common/
 822libs-y += drivers/usb/emul/
 823libs-y += drivers/usb/eth/
 824libs-$(CONFIG_USB_DEVICE) += drivers/usb/gadget/
 825libs-$(CONFIG_USB_GADGET) += drivers/usb/gadget/
 826libs-$(CONFIG_USB_GADGET) += drivers/usb/gadget/udc/
 827libs-y += drivers/usb/host/
 828libs-y += drivers/usb/mtu3/
 829libs-y += drivers/usb/musb/
 830libs-y += drivers/usb/musb-new/
 831libs-y += drivers/usb/phy/
 832libs-y += drivers/usb/ulpi/
 833libs-y += cmd/
 834libs-y += common/
 835libs-y += env/
 836libs-$(CONFIG_API) += api/
 837ifdef CONFIG_POST
 838libs-y += post/
 839endif
 840libs-$(CONFIG_UNIT_TEST) += test/
 841libs-$(CONFIG_UT_ENV) += test/env/
 842libs-$(CONFIG_UT_OPTEE) += test/optee/
 843libs-$(CONFIG_UT_OVERLAY) += test/overlay/
 844
 845libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
 846
 847libs-y := $(sort $(libs-y))
 848
 849u-boot-dirs     := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
 850
 851u-boot-alldirs  := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
 852
 853libs-y          := $(patsubst %/, %/built-in.o, $(libs-y))
 854
 855u-boot-init := $(head-y)
 856u-boot-main := $(libs-y)
 857
 858
 859# Add GCC lib
 860ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
 861PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
 862else
 863PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
 864endif
 865PLATFORM_LIBS += $(PLATFORM_LIBGCC)
 866
 867ifdef CONFIG_CC_COVERAGE
 868KBUILD_CFLAGS += --coverage
 869PLATFORM_LIBGCC += -lgcov
 870endif
 871
 872export PLATFORM_LIBS
 873export PLATFORM_LIBGCC
 874
 875# Special flags for CPP when processing the linker script.
 876# Pass the version down so we can handle backwards compatibility
 877# on the fly.
 878LDPPFLAGS += \
 879        -include $(srctree)/include/u-boot/u-boot.lds.h \
 880        -DCPUDIR=$(CPUDIR) \
 881        $(shell $(LD) --version | \
 882          sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
 883
 884#########################################################################
 885#########################################################################
 886
 887ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
 888BOARD_SIZE_CHECK= @ $(call size_check,$@,$(CONFIG_BOARD_SIZE_LIMIT))
 889else
 890BOARD_SIZE_CHECK =
 891endif
 892
 893ifneq ($(CONFIG_SPL_SIZE_LIMIT),0x0)
 894SPL_SIZE_CHECK = @$(call size_check,$@,$$(tools/spl_size_limit))
 895else
 896SPL_SIZE_CHECK =
 897endif
 898
 899ifneq ($(CONFIG_TPL_SIZE_LIMIT),0x0)
 900TPL_SIZE_CHECK = @$(call size_check,$@,$(CONFIG_TPL_SIZE_LIMIT))
 901else
 902TPL_SIZE_CHECK =
 903endif
 904
 905# Statically apply RELA-style relocations (currently arm64 only)
 906# This is useful for arm64 where static relocation needs to be performed on
 907# the raw binary, but certain simulators only accept an ELF file (but don't
 908# do the relocation).
 909ifneq ($(CONFIG_STATIC_RELA),)
 910# $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
 911quiet_cmd_static_rela = RELOC   $@
 912cmd_static_rela = \
 913        start=$$($(NM) $(2) | grep __rel_dyn_start | cut -f 1 -d ' '); \
 914        end=$$($(NM) $(2) | grep __rel_dyn_end | cut -f 1 -d ' '); \
 915        tools/relocate-rela $(3) $(4) $$start $$end
 916else
 917quiet_cmd_static_rela =
 918cmd_static_rela =
 919endif
 920
 921# Always append INPUTS so that arch config.mk's can add custom ones
 922INPUTS-y += u-boot.srec u-boot.bin u-boot.sym System.map binary_size_check
 923
 924INPUTS-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
 925ifeq ($(CONFIG_SPL_FSL_PBL),y)
 926INPUTS-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
 927else
 928ifneq ($(CONFIG_NXP_ESBC), y)
 929# For Secure Boot The Image needs to be signed and Header must also
 930# be included. So The image has to be built explicitly
 931INPUTS-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
 932endif
 933endif
 934INPUTS-$(CONFIG_SPL) += spl/u-boot-spl.bin
 935ifeq ($(CONFIG_MX6)$(CONFIG_IMX_HAB), yy)
 936INPUTS-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img
 937else
 938ifeq ($(CONFIG_MX7)$(CONFIG_IMX_HAB), yy)
 939INPUTS-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img
 940else
 941INPUTS-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
 942endif
 943endif
 944INPUTS-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
 945INPUTS-$(CONFIG_OF_SEPARATE) += u-boot.dtb
 946INPUTS-$(CONFIG_BINMAN_STANDALONE_FDT) += u-boot.dtb
 947ifeq ($(CONFIG_SPL_FRAMEWORK),y)
 948INPUTS-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
 949endif
 950INPUTS-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
 951ifneq ($(CONFIG_SPL_TARGET),)
 952INPUTS-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
 953endif
 954INPUTS-$(CONFIG_REMAKE_ELF) += u-boot.elf
 955INPUTS-$(CONFIG_EFI_APP) += u-boot-app.efi
 956INPUTS-$(CONFIG_EFI_STUB) += u-boot-payload.efi
 957
 958# Generate this input file for binman
 959ifeq ($(CONFIG_SPL),)
 960INPUTS-$(CONFIG_ARCH_MEDIATEK) += u-boot-mtk.bin
 961endif
 962
 963# Add optional build target if defined in board/cpu/soc headers
 964ifneq ($(CONFIG_BUILD_TARGET),)
 965INPUTS-y += $(CONFIG_BUILD_TARGET:"%"=%)
 966endif
 967
 968ifeq ($(CONFIG_INIT_SP_RELATIVE)$(CONFIG_OF_SEPARATE),yy)
 969INPUTS-y += init_sp_bss_offset_check
 970endif
 971
 972ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
 973INPUTS-y += u-boot-with-dtb.bin
 974endif
 975
 976ifeq ($(CONFIG_ARCH_ROCKCHIP),y)
 977# On ARM64 this target is produced by binman so we don't need this dep
 978ifeq ($(CONFIG_ARM64),y)
 979ifeq ($(CONFIG_SPL),y)
 980# TODO: Get binman to generate this too
 981INPUTS-y += u-boot-rockchip.bin
 982endif
 983else
 984ifeq ($(CONFIG_SPL),y)
 985# Generate these inputs for binman which will create the output files
 986INPUTS-y += idbloader.img u-boot.img
 987endif
 988endif
 989endif
 990
 991INPUTS-$(CONFIG_X86) += u-boot-x86-start16.bin u-boot-x86-reset16.bin \
 992        $(if $(CONFIG_SPL_X86_16BIT_INIT),spl/u-boot-spl.bin) \
 993        $(if $(CONFIG_TPL_X86_16BIT_INIT),tpl/u-boot-tpl.bin)
 994
 995LDFLAGS_u-boot += $(LDFLAGS_FINAL)
 996
 997# Avoid 'Not enough room for program headers' error on binutils 2.28 onwards.
 998LDFLAGS_u-boot += $(call ld-option, --no-dynamic-linker)
 999
1000LDFLAGS_u-boot += --build-id=none
1001
1002ifeq ($(CONFIG_ARC)$(CONFIG_NIOS2)$(CONFIG_X86)$(CONFIG_XTENSA),)
1003LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
1004endif
1005
1006# insure the checker run with the right endianness
1007CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian)
1008
1009# the checker needs the correct machine size
1010CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32)
1011
1012# Normally we fill empty space with 0xff
1013quiet_cmd_objcopy = OBJCOPY $@
1014cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \
1015        $(OBJCOPYFLAGS_$(@F)) $< $@
1016
1017# Provide a version which does not do this, for use by EFI
1018quiet_cmd_zobjcopy = OBJCOPY $@
1019cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
1020
1021quiet_cmd_efipayload = OBJCOPY $@
1022cmd_efipayload = $(OBJCOPY) -I binary -O $(EFIPAYLOAD_BFDTARGET) -B $(EFIPAYLOAD_BFDARCH) $< $@
1023
1024MKIMAGEOUTPUT ?= /dev/null
1025
1026quiet_cmd_mkimage = MKIMAGE $@
1027cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
1028        >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
1029
1030quiet_cmd_mkfitimage = MKIMAGE $@
1031cmd_mkfitimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) \
1032        -f $(U_BOOT_ITS) -p $(CONFIG_FIT_EXTERNAL_OFFSET) $@ \
1033        >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
1034
1035quiet_cmd_cat = CAT     $@
1036cmd_cat = cat $(filter-out $(PHONY), $^) > $@
1037
1038append = cat $(filter-out $< $(PHONY), $^) >> $@
1039
1040quiet_cmd_pad_cat = CAT     $@
1041cmd_pad_cat = $(cmd_objcopy) && $(append) || { rm -f $@; false; }
1042
1043quiet_cmd_lzma = LZMA    $@
1044cmd_lzma = lzma -c -z -k -9 $< > $@
1045
1046cfg: u-boot.cfg
1047
1048quiet_cmd_cfgcheck = CFGCHK  $2
1049cmd_cfgcheck = $(srctree)/scripts/check-config.sh $2 \
1050                $(srctree)/scripts/config_whitelist.txt $(srctree)
1051
1052# Concat the value of all the CONFIGs (result is 'y' or 'yy', etc. )
1053got = $(foreach cfg,$(1),$($(cfg)))
1054
1055# expected value 'y for each one
1056expect = $(foreach cfg,$(1),y)
1057
1058# Show a deprecation message
1059# Args:
1060# 1: List of CONFIG_DM_... to migrate to (e.g. "CONFIG_DM_MMC CONFIG_BLK")
1061# 2: Name of component (e.g . "Ethernet drivers")
1062# 3: Release deadline (e.g. "v202.07")
1063# 4: Condition to require before checking (e.g. "$(CONFIG_NET)")
1064# Note: Script avoids bash construct, hence the strange double 'if'
1065# (patches welcome!)
1066define deprecated
1067        @if [ -n "$(strip $(4))" ]; then if [ "$(got)" != "$(expect)" ]; then \
1068                echo >&2 "===================== WARNING ======================"; \
1069                echo >&2 "This board does not use $(firstword $(1)) (Driver Model"; \
1070                echo >&2 "for $(2)). Please update the board to use"; \
1071                echo >&2 "$(firstword $(1)) before the $(3) release. Failure to"; \
1072                echo >&2 "update by the deadline may result in board removal."; \
1073                echo >&2 "See doc/driver-model/migration.rst for more info."; \
1074                echo >&2 "===================================================="; \
1075        fi; fi
1076
1077endef
1078
1079PHONY += inputs
1080inputs: $(INPUTS-y)
1081
1082all: .binman_stamp inputs
1083ifeq ($(CONFIG_BINMAN),y)
1084        $(call if_changed,binman)
1085endif
1086
1087# Timestamp file to make sure that binman always runs
1088.binman_stamp: FORCE
1089        @touch $@
1090
1091ifeq ($(CONFIG_DEPRECATED),y)
1092        $(warning "You have deprecated configuration options enabled in your .config! Please check your configuration.")
1093endif
1094ifeq ($(CONFIG_OF_EMBED),y)
1095        @echo >&2 "===================== WARNING ======================"
1096        @echo >&2 "CONFIG_OF_EMBED is enabled. This option should only"
1097        @echo >&2 "be used for debugging purposes. Please use"
1098        @echo >&2 "CONFIG_OF_SEPARATE for boards in mainline."
1099        @echo >&2 "See doc/README.fdt-control for more info."
1100        @echo >&2 "===================================================="
1101endif
1102ifneq ($(CONFIG_SPL_FIT_GENERATOR),)
1103        @echo >&2 "===================== WARNING ======================"
1104        @echo >&2 "This board uses CONFIG_SPL_FIT_GENERATOR. Please migrate"
1105        @echo >&2 "to binman instead, to avoid the proliferation of"
1106        @echo >&2 "arch-specific scripts with no tests."
1107        @echo >&2 "===================================================="
1108endif
1109ifneq ($(CONFIG_DM),y)
1110        @echo >&2 "===================== WARNING ======================"
1111        @echo >&2 "This board does not use CONFIG_DM. CONFIG_DM will be"
1112        @echo >&2 "compulsory starting with the v2020.01 release."
1113        @echo >&2 "Failure to update may result in board removal."
1114        @echo >&2 "See doc/driver-model/migration.rst for more info."
1115        @echo >&2 "===================================================="
1116endif
1117        $(call deprecated,CONFIG_DM_USB CONFIG_OF_CONTROL CONFIG_BLK,\
1118                USB,v2019.07,$(CONFIG_USB))
1119        $(call deprecated,CONFIG_DM_PCI,PCI,v2019.07,$(CONFIG_PCI))
1120        $(call deprecated,CONFIG_DM_VIDEO,video,v2019.07,\
1121                $(CONFIG_LCD)$(CONFIG_VIDEO))
1122        $(call deprecated,CONFIG_DM_SPI_FLASH,SPI flash,v2019.07,\
1123                $(CONFIG_SPI_FLASH))
1124        $(call deprecated,CONFIG_WDT,DM watchdog,v2019.10,\
1125                $(CONFIG_WATCHDOG)$(CONFIG_HW_WATCHDOG))
1126        $(call deprecated,CONFIG_DM_ETH,Ethernet drivers,v2020.07,$(CONFIG_NET))
1127        $(call deprecated,CONFIG_DM_I2C,I2C drivers,v2022.04,$(CONFIG_I2C))
1128        @# Check that this build does not use CONFIG options that we do not
1129        @# know about unless they are in Kconfig. All the existing CONFIG
1130        @# options are whitelisted, so new ones should not be added.
1131        $(call cmd,cfgcheck,u-boot.cfg)
1132
1133PHONY += dtbs
1134dtbs: dts/dt.dtb
1135        @:
1136dts/dt.dtb: u-boot
1137        $(Q)$(MAKE) $(build)=dts dtbs
1138
1139quiet_cmd_copy = COPY    $@
1140      cmd_copy = cp $< $@
1141
1142ifeq ($(CONFIG_MULTI_DTB_FIT),y)
1143
1144ifeq ($(CONFIG_MULTI_DTB_FIT_LZO),y)
1145FINAL_DTB_CONTAINER = fit-dtb.blob.lzo
1146else ifeq ($(CONFIG_MULTI_DTB_FIT_GZIP),y)
1147FINAL_DTB_CONTAINER = fit-dtb.blob.gz
1148else
1149FINAL_DTB_CONTAINER = fit-dtb.blob
1150endif
1151
1152fit-dtb.blob.gz: fit-dtb.blob
1153        @gzip -kf9 $< > $@
1154
1155fit-dtb.blob.lzo: fit-dtb.blob
1156        @lzop -f9 $< > $@
1157
1158fit-dtb.blob: dts/dt.dtb FORCE
1159        $(call if_changed,mkimage)
1160ifneq ($(SOURCE_DATE_EPOCH),)
1161        touch -d @$(SOURCE_DATE_EPOCH) fit-dtb.blob
1162        chmod 0600 fit-dtb.blob
1163endif
1164
1165MKIMAGEFLAGS_fit-dtb.blob = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
1166        -a 0 -e 0 -E \
1167        $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) -d /dev/null
1168
1169ifneq ($(EXT_DTB),)
1170u-boot-fit-dtb.bin: u-boot-nodtb.bin $(EXT_DTB)
1171                $(call if_changed,cat)
1172else
1173u-boot-fit-dtb.bin: u-boot-nodtb.bin $(FINAL_DTB_CONTAINER)
1174        $(call if_changed,cat)
1175endif
1176
1177u-boot.bin: u-boot-fit-dtb.bin FORCE
1178        $(call if_changed,copy)
1179
1180u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE
1181        $(call if_changed,cat)
1182
1183else ifeq ($(CONFIG_OF_SEPARATE),y)
1184u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE
1185        $(call if_changed,cat)
1186
1187u-boot.bin: u-boot-dtb.bin FORCE
1188        $(call if_changed,copy)
1189else
1190u-boot.bin: u-boot-nodtb.bin FORCE
1191        $(call if_changed,copy)
1192endif
1193
1194# we call Makefile in arch/arm/mach-imx which
1195# has targets which are dependent on targets defined
1196# here. make could not resolve them and we must ensure
1197# that they are finished before calling imx targets
1198ifeq ($(CONFIG_MULTI_DTB_FIT),y)
1199IMX_DEPS = u-boot-fit-dtb.bin
1200endif
1201
1202%.imx: $(IMX_DEPS) %.bin
1203        $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1204        $(BOARD_SIZE_CHECK)
1205
1206%.vyb: %.imx
1207        $(Q)$(MAKE) $(build)=arch/arm/cpu/armv7/vf610 $@
1208
1209quiet_cmd_copy = COPY    $@
1210      cmd_copy = cp $< $@
1211
1212u-boot.dtb: dts/dt.dtb
1213        $(call cmd,copy)
1214
1215OBJCOPYFLAGS_u-boot.hex := -O ihex
1216
1217OBJCOPYFLAGS_u-boot.srec := -O srec
1218
1219u-boot.hex u-boot.srec: u-boot FORCE
1220        $(call if_changed,objcopy)
1221
1222OBJCOPYFLAGS_u-boot-elf.srec := $(OBJCOPYFLAGS_u-boot.srec)
1223
1224u-boot-elf.srec: u-boot.elf FORCE
1225        $(call if_changed,objcopy)
1226
1227OBJCOPYFLAGS_u-boot-spl.srec = $(OBJCOPYFLAGS_u-boot.srec)
1228
1229spl/u-boot-spl.srec: spl/u-boot-spl FORCE
1230        $(call if_changed,objcopy)
1231
1232%.scif: %.srec
1233        $(Q)$(MAKE) $(build)=arch/arm/mach-rmobile $@
1234
1235OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \
1236                $(if $(CONFIG_X86_16BIT_INIT),-R .start16 -R .resetvec) \
1237                $(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR),-R .bootpg -R .resetvec)
1238
1239binary_size_check: u-boot-nodtb.bin FORCE
1240        @file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \
1241        map_size=$(shell cat u-boot.map | \
1242                awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
1243                | sed 's/0X//g' \
1244                | bc); \
1245        if [ "" != "$$map_size" ]; then \
1246                if test $$map_size -ne $$file_size; then \
1247                        echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
1248                        echo "  but u-boot-nodtb.bin shows $$file_size" >&2 ; \
1249                        exit 1; \
1250                fi \
1251        fi
1252
1253ifeq ($(CONFIG_INIT_SP_RELATIVE)$(CONFIG_OF_SEPARATE),yy)
1254ifneq ($(CONFIG_SYS_MALLOC_F_LEN),)
1255subtract_sys_malloc_f_len = space=$$(($${space} - $(CONFIG_SYS_MALLOC_F_LEN)))
1256else
1257subtract_sys_malloc_f_len = true
1258endif
1259# The 1/4 margin below is somewhat arbitrary. The likely initial SP usage is
1260# so low that the DTB could probably use 90%+ of the available space, for
1261# current values of CONFIG_SYS_INIT_SP_BSS_OFFSET at least. However, let's be
1262# safe for now and tweak this later if space becomes tight.
1263# A rejected alternative would be to check that some absolute minimum stack
1264# space was available. However, since CONFIG_SYS_INIT_SP_BSS_OFFSET is
1265# deliberately build-specific, to take account of build-to-build stack usage
1266# differences due to different feature sets, there is no common absolute value
1267# to check against.
1268init_sp_bss_offset_check: u-boot.dtb FORCE
1269        @dtb_size=$(shell wc -c u-boot.dtb | awk '{print $$1}') ; \
1270        space=$(CONFIG_SYS_INIT_SP_BSS_OFFSET) ; \
1271        $(subtract_sys_malloc_f_len) ; \
1272        quarter_space=$$(($${space} / 4)) ; \
1273        if [ $${dtb_size} -gt $${quarter_space} ]; then \
1274                echo "u-boot.dtb is larger than 1 quarter of " >&2 ; \
1275                echo "(CONFIG_SYS_INIT_SP_BSS_OFFSET - CONFIG_SYS_MALLOC_F_LEN)" >&2 ; \
1276                exit 1 ; \
1277        fi
1278endif
1279
1280shell_cmd = { $(call echo-cmd,$(1)) $(cmd_$(1)); }
1281
1282quiet_cmd_objcopy_uboot = OBJCOPY $@
1283ifdef cmd_static_rela
1284cmd_objcopy_uboot = $(cmd_objcopy) && $(call shell_cmd,static_rela,$<,$@,$(CONFIG_SYS_TEXT_BASE)) || { rm -f $@; false; }
1285else
1286cmd_objcopy_uboot = $(cmd_objcopy)
1287endif
1288
1289u-boot-nodtb.bin: u-boot FORCE
1290        $(call if_changed,objcopy_uboot)
1291        $(BOARD_SIZE_CHECK)
1292
1293u-boot.ldr:     u-boot
1294                $(CREATE_LDR_ENV)
1295                $(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS)
1296                $(BOARD_SIZE_CHECK)
1297
1298# binman
1299# ---------------------------------------------------------------------------
1300# Use 'make BINMAN_DEBUG=1' to enable debugging
1301# Use 'make BINMAN_VERBOSE=3' to set vebosity level
1302default_dt := $(if $(DEVICE_TREE),$(DEVICE_TREE),$(CONFIG_DEFAULT_DEVICE_TREE))
1303
1304# Tell binman whether we have a devicetree for SPL and TPL
1305have_spl_dt := $(if $(CONFIG_SPL_OF_PLATDATA),,$(CONFIG_SPL_OF_CONTROL))
1306have_tpl_dt := $(if $(CONFIG_TPL_OF_PLATDATA),,$(CONFIG_TPL_OF_CONTROL))
1307
1308quiet_cmd_binman = BINMAN  $@
1309cmd_binman = $(srctree)/tools/binman/binman $(if $(BINMAN_DEBUG),-D) \
1310                --toolpath $(objtree)/tools \
1311                $(if $(BINMAN_VERBOSE),-v$(BINMAN_VERBOSE)) \
1312                build -u -d u-boot.dtb -O . -m --allow-missing \
1313                -I . -I $(srctree) -I $(srctree)/board/$(BOARDDIR) \
1314                -I arch/$(ARCH)/dts -a of-list=$(CONFIG_OF_LIST) \
1315                -a atf-bl31-path=${BL31} \
1316                -a opensbi-path=${OPENSBI} \
1317                -a default-dt=$(default_dt) \
1318                -a scp-path=$(SCP) \
1319                -a spl-bss-pad=$(if $(CONFIG_SPL_SEPARATE_BSS),,1) \
1320                -a tpl-bss-pad=$(if $(CONFIG_TPL_SEPARATE_BSS),,1) \
1321                -a spl-dtb=$(have_spl_dt) -a tpl-dtb=$(have_tpl_dt) \
1322                $(BINMAN_$(@F))
1323
1324OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
1325
1326OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
1327
1328u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
1329        $(call if_changed,objcopy)
1330
1331#
1332# U-Boot entry point, needed for booting of full-blown U-Boot
1333# from the SPL U-Boot version.
1334#
1335ifndef CONFIG_SYS_UBOOT_START
1336CONFIG_SYS_UBOOT_START := $(CONFIG_SYS_TEXT_BASE)
1337endif
1338
1339# Boards with more complex image requirements can provide an .its source file
1340# or a generator script
1341# NOTE: Please do not use this. We are migrating away from Makefile rules to use
1342# binman instead.
1343ifneq ($(CONFIG_SPL_FIT_SOURCE),"")
1344U_BOOT_ITS := u-boot.its
1345$(U_BOOT_ITS): $(subst ",,$(CONFIG_SPL_FIT_SOURCE))
1346        $(call if_changed,copy)
1347else
1348ifneq ($(CONFIG_USE_SPL_FIT_GENERATOR),)
1349U_BOOT_ITS := u-boot.its
1350ifeq ($(CONFIG_SPL_FIT_GENERATOR),"arch/arm/mach-imx/mkimage_fit_atf.sh")
1351U_BOOT_ITS_DEPS += u-boot-nodtb.bin
1352endif
1353ifeq ($(CONFIG_SPL_FIT_GENERATOR),"arch/arm/mach-rockchip/make_fit_atf.py")
1354U_BOOT_ITS_DEPS += u-boot
1355endif
1356$(U_BOOT_ITS): $(U_BOOT_ITS_DEPS) FORCE
1357        $(srctree)/$(CONFIG_SPL_FIT_GENERATOR) \
1358        $(patsubst %,arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) > $@
1359endif
1360endif
1361
1362ifdef CONFIG_SPL_LOAD_FIT
1363MKIMAGEFLAGS_u-boot.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
1364        -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1365        -p $(CONFIG_FIT_EXTERNAL_OFFSET) \
1366        -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \
1367        $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(DEVICE_TREE))) \
1368        $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) \
1369        $(patsubst %,-b arch/$(ARCH)/dts/%.dtbo,$(subst ",,$(CONFIG_OF_OVERLAY_LIST)))
1370else
1371MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
1372        -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1373        -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
1374MKIMAGEFLAGS_u-boot-ivt.img = -A $(ARCH) -T firmware_ivt -C none -O u-boot \
1375        -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1376        -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
1377u-boot-ivt.img: MKIMAGEOUTPUT = u-boot-ivt.img.log
1378endif
1379
1380MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
1381
1382# Some boards have the kwbimage.cfg file written in advance, while some
1383# other boards generate it on the fly during the build in the build tree.
1384# Let's check if the file exists in the build tree first, otherwise we
1385# fall back to use the one in the source tree.
1386KWD_CONFIG_FILE = $(shell \
1387        if [ -f $(objtree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) ]; then \
1388                echo -n $(objtree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%); \
1389        else \
1390                echo -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%); \
1391        fi)
1392
1393MKIMAGEFLAGS_u-boot.kwb = -n $(KWD_CONFIG_FILE) \
1394        -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
1395
1396MKIMAGEFLAGS_u-boot-spl.kwb = -n $(KWD_CONFIG_FILE) \
1397        -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \
1398        $(if $(KEYDIR),-k $(KEYDIR))
1399
1400MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1401                -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
1402
1403ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
1404UBOOT_BIN := u-boot-with-dtb.bin
1405else
1406UBOOT_BIN := u-boot.bin
1407endif
1408
1409MKIMAGEFLAGS_u-boot-lzma.img = -A $(ARCH) -T standalone -C lzma -O u-boot \
1410        -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1411        -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
1412
1413u-boot.bin.lzma: u-boot.bin FORCE
1414        $(call if_changed,lzma)
1415
1416u-boot-lzma.img: u-boot.bin.lzma FORCE
1417        $(call if_changed,mkimage)
1418
1419u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl u-boot-ivt.img: \
1420                $(if $(CONFIG_SPL_LOAD_FIT),u-boot-nodtb.bin \
1421                        $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_OF_HOSTFILE)$(CONFIG_BINMAN_STANDALONE_FDT),dts/dt.dtb) \
1422                ,$(UBOOT_BIN)) FORCE
1423        $(call if_changed,mkimage)
1424        $(BOARD_SIZE_CHECK)
1425
1426ifeq ($(CONFIG_SPL_LOAD_FIT_FULL),y)
1427MKIMAGEFLAGS_u-boot.itb =
1428else
1429MKIMAGEFLAGS_u-boot.itb = -E
1430endif
1431
1432ifdef U_BOOT_ITS
1433u-boot.itb: u-boot-nodtb.bin \
1434                $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_OF_HOSTFILE),dts/dt.dtb) \
1435                $(U_BOOT_ITS) FORCE
1436        $(call if_changed,mkfitimage)
1437        $(BOARD_SIZE_CHECK)
1438endif
1439
1440u-boot-spl.kwb: u-boot.img spl/u-boot-spl.bin FORCE
1441        $(call if_changed,mkimage)
1442
1443u-boot.sha1:    u-boot.bin
1444                tools/ubsha1 u-boot.bin
1445
1446u-boot.dis:     u-boot
1447                $(OBJDUMP) -d $< > $@
1448
1449ifneq ($(CONFIG_SPL_PAYLOAD),)
1450SPL_PAYLOAD := $(CONFIG_SPL_PAYLOAD:"%"=%)
1451else
1452SPL_PAYLOAD := u-boot.bin
1453endif
1454
1455SPL_IMAGE := $(CONFIG_SPL_IMAGE:"%"=%)
1456
1457OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
1458                                   --pad-to=$(CONFIG_SPL_PAD_TO)
1459u-boot-with-spl.bin: $(SPL_IMAGE) $(SPL_PAYLOAD) FORCE
1460        $(call if_changed,pad_cat)
1461
1462ifeq ($(CONFIG_ARCH_ROCKCHIP),y)
1463
1464# TPL + SPL
1465ifeq ($(CONFIG_SPL)$(CONFIG_TPL),yy)
1466MKIMAGEFLAGS_u-boot-tpl-rockchip.bin = -n $(CONFIG_SYS_SOC) -T rksd
1467tpl/u-boot-tpl-rockchip.bin: tpl/u-boot-tpl.bin FORCE
1468        $(call if_changed,mkimage)
1469idbloader.img: tpl/u-boot-tpl-rockchip.bin spl/u-boot-spl.bin FORCE
1470        $(call if_changed,cat)
1471else
1472MKIMAGEFLAGS_idbloader.img = -n $(CONFIG_SYS_SOC) -T rksd
1473idbloader.img: spl/u-boot-spl.bin FORCE
1474        $(call if_changed,mkimage)
1475endif
1476
1477ifeq ($(CONFIG_ARM64),y)
1478OBJCOPYFLAGS_u-boot-rockchip.bin = -I binary -O binary \
1479        --pad-to=$(CONFIG_SPL_PAD_TO) --gap-fill=0xff
1480u-boot-rockchip.bin: idbloader.img u-boot.itb FORCE
1481        $(call if_changed,pad_cat)
1482endif # CONFIG_ARM64
1483
1484endif # CONFIG_ARCH_ROCKCHIP
1485
1486ifeq ($(CONFIG_ARCH_LPC32XX)$(CONFIG_SPL),yy)
1487MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE)
1488
1489lpc32xx-spl.img: spl/u-boot-spl.bin FORCE
1490        $(call if_changed,mkimage)
1491
1492OBJCOPYFLAGS_lpc32xx-boot-0.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1493
1494lpc32xx-boot-0.bin: lpc32xx-spl.img FORCE
1495        $(call if_changed,objcopy)
1496
1497OBJCOPYFLAGS_lpc32xx-boot-1.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1498
1499lpc32xx-boot-1.bin: lpc32xx-spl.img FORCE
1500        $(call if_changed,objcopy)
1501
1502lpc32xx-full.bin: lpc32xx-boot-0.bin lpc32xx-boot-1.bin u-boot.img FORCE
1503        $(call if_changed,cat)
1504
1505endif
1506
1507OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
1508                                   --pad-to=$(CONFIG_TPL_PAD_TO)
1509tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
1510        $(call if_changed,pad_cat)
1511
1512SPL: spl/u-boot-spl.bin FORCE
1513        $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1514
1515ifeq ($(CONFIG_ARCH_IMX8M)$(CONFIG_ARCH_IMX8), y)
1516ifeq ($(CONFIG_SPL_LOAD_IMX_CONTAINER), y)
1517u-boot.cnt: u-boot.bin FORCE
1518        $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1519
1520flash.bin: spl/u-boot-spl.bin u-boot.cnt FORCE
1521        $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1522else
1523ifeq ($(CONFIG_BINMAN),y)
1524flash.bin: spl/u-boot-spl.bin $(INPUTS-y) FORCE
1525        $(call if_changed,binman)
1526        $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1527else
1528flash.bin: spl/u-boot-spl.bin u-boot.itb FORCE
1529        $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1530endif
1531endif
1532endif
1533
1534u-boot.uim: u-boot.bin FORCE
1535        $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1536
1537u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL $(if $(CONFIG_OF_SEPARATE),u-boot.img,u-boot.uim) FORCE
1538        $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1539
1540MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
1541
1542u-boot.ubl: u-boot-with-spl.bin FORCE
1543        $(call if_changed,mkimage)
1544
1545MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
1546        $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
1547        -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
1548spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
1549        $(call if_changed,mkimage)
1550
1551OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1552u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
1553        $(call if_changed,pad_cat)
1554
1555u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
1556        $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
1557u-boot.sb: u-boot.bin spl/u-boot-spl.bin
1558        $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
1559
1560# On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
1561# Both images are created using mkimage (crc etc), so that the ROM
1562# bootloader can check its integrity. Padding needs to be done to the
1563# SPL image (with mkimage header) and not the binary. Otherwise the resulting image
1564# which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
1565# The resulting image containing both U-Boot images is called u-boot.spr
1566MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
1567        -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
1568spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
1569        $(call if_changed,mkimage)
1570
1571OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1572                          --gap-fill=0xff
1573u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
1574        $(call if_changed,pad_cat)
1575
1576ifneq ($(CONFIG_ARCH_SOCFPGA),)
1577quiet_cmd_gensplx4 = GENSPLX4 $@
1578cmd_gensplx4 = $(OBJCOPY) -I binary -O binary --gap-fill=0x0            \
1579                        --pad-to=$(CONFIG_SPL_PAD_TO)                   \
1580                        spl/u-boot-spl.sfp spl/u-boot-spl.sfp &&        \
1581                cat     spl/u-boot-spl.sfp spl/u-boot-spl.sfp           \
1582                        spl/u-boot-spl.sfp spl/u-boot-spl.sfp > $@ || { rm -f $@; false; }
1583spl/u-boot-splx4.sfp: spl/u-boot-spl.sfp FORCE
1584        $(call if_changed,gensplx4)
1585
1586quiet_cmd_socboot = SOCBOOT $@
1587cmd_socboot = cat       spl/u-boot-splx4.sfp u-boot.img > $@ || { rm -f $@; false; }
1588u-boot-with-spl.sfp: spl/u-boot-splx4.sfp u-boot.img FORCE
1589        $(call if_changed,socboot)
1590
1591quiet_cmd_gensplpadx4 = GENSPLPADX4 $@
1592cmd_gensplpadx4 =  dd if=/dev/zero of=spl/u-boot-spl.pad bs=64 count=1024 ; \
1593                   cat  spl/u-boot-spl.sfp spl/u-boot-spl.pad \
1594                        spl/u-boot-spl.sfp spl/u-boot-spl.pad \
1595                        spl/u-boot-spl.sfp spl/u-boot-spl.pad \
1596                        spl/u-boot-spl.sfp spl/u-boot-spl.pad > $@ || \
1597                        { rm -f $@ spl/u-boot-spl.pad; false; }
1598u-boot-spl-padx4.sfp: spl/u-boot-spl.sfp FORCE
1599        $(call if_changed,gensplpadx4)
1600
1601quiet_cmd_socnandboot = SOCNANDBOOT $@
1602cmd_socnandboot = cat   u-boot-spl-padx4.sfp u-boot.img > $@ || { rm -f $@; false; }
1603u-boot-with-nand-spl.sfp: u-boot-spl-padx4.sfp u-boot.img FORCE
1604        $(call if_changed,socnandboot)
1605
1606endif
1607
1608ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
1609u-boot-with-dtb.bin: u-boot.bin u-boot.dtb \
1610        $(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR), u-boot-br.bin) FORCE
1611        $(call if_changed,binman)
1612
1613ifeq ($(CONFIG_MPC85XX_HAVE_RESET_VECTOR),y)
1614OBJCOPYFLAGS_u-boot-br.bin := -O binary -j .bootpg -j .resetvec
1615u-boot-br.bin: u-boot FORCE
1616        $(call if_changed,objcopy)
1617endif
1618endif
1619
1620quiet_cmd_ldr = LD      $@
1621cmd_ldr = $(LD) $(LDFLAGS_$(@F)) \
1622               $(filter-out FORCE,$^) -o $@
1623
1624ifdef CONFIG_X86
1625OBJCOPYFLAGS_u-boot-x86-start16.bin := -O binary -j .start16
1626u-boot-x86-start16.bin: u-boot FORCE
1627        $(call if_changed,objcopy)
1628
1629OBJCOPYFLAGS_u-boot-x86-reset16.bin := -O binary -j .resetvec
1630u-boot-x86-reset16.bin: u-boot FORCE
1631        $(call if_changed,objcopy)
1632
1633endif # CONFIG_X86
1634
1635OBJCOPYFLAGS_u-boot-app.efi := $(OBJCOPYFLAGS_EFI)
1636u-boot-app.efi: u-boot FORCE
1637        $(call if_changed,zobjcopy)
1638
1639u-boot.bin.o: u-boot.bin FORCE
1640        $(call if_changed,efipayload)
1641
1642u-boot-payload.lds: $(LDSCRIPT_EFI) FORCE
1643        $(call if_changed_dep,cpp_lds)
1644
1645# Rule to link the EFI payload which contains a stub and a U-Boot binary
1646quiet_cmd_u-boot_payload ?= LD      $@
1647      cmd_u-boot_payload ?= $(LD) $(LDFLAGS_EFI_PAYLOAD) -o $@ \
1648      -T u-boot-payload.lds arch/x86/cpu/call32.o \
1649      lib/efi/efi.o lib/efi/efi_stub.o u-boot.bin.o \
1650      $(addprefix arch/$(ARCH)/lib/,$(EFISTUB))
1651
1652u-boot-payload: u-boot.bin.o u-boot-payload.lds FORCE
1653        $(call if_changed,u-boot_payload)
1654
1655OBJCOPYFLAGS_u-boot-payload.efi := $(OBJCOPYFLAGS_EFI)
1656u-boot-payload.efi: u-boot-payload FORCE
1657        $(call if_changed,zobjcopy)
1658
1659u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
1660        $(call if_changed,cat)
1661
1662#Add a target to create boot binary having SPL binary in PBI format
1663#concatenated with u-boot binary. It is need by PowerPC SoC having
1664#internal SRAM <= 512KB.
1665MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1666                -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \
1667                -A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE)
1668
1669spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
1670        $(call if_changed,mkimage)
1671
1672ifeq ($(ARCH),arm)
1673UBOOT_BINLOAD := u-boot.img
1674else
1675ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
1676UBOOT_BINLOAD := u-boot-with-dtb.bin
1677else
1678UBOOT_BINLOAD := u-boot.bin
1679endif
1680endif
1681
1682OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1683                          --gap-fill=0xff
1684
1685u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE
1686        $(call if_changed,pad_cat)
1687
1688# PPC4xx needs the SPL at the end of the image, since the reset vector
1689# is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
1690# and need to introduce a new build target with the full blown U-Boot
1691# at the start padded up to the start of the SPL image. And then concat
1692# the SPL image to the end.
1693
1694OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
1695        --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
1696u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
1697        $(call if_changed,pad_cat)
1698
1699quiet_cmd_u-boot-elf ?= LD      $@
1700        cmd_u-boot-elf ?= $(LD) u-boot-elf.o -o $@ \
1701        -T u-boot-elf.lds --defsym=$(CONFIG_PLATFORM_ELFENTRY)=$(CONFIG_SYS_TEXT_BASE) \
1702        -Ttext=$(CONFIG_SYS_TEXT_BASE)
1703u-boot.elf: u-boot.bin u-boot-elf.lds
1704        $(Q)$(OBJCOPY) -I binary $(PLATFORM_ELFFLAGS) $< u-boot-elf.o
1705        $(call if_changed,u-boot-elf)
1706
1707u-boot-elf.lds: arch/u-boot-elf.lds prepare FORCE
1708        $(call if_changed_dep,cpp_lds)
1709
1710# MediaTek's ARM-based u-boot needs a header to contains its load address
1711# which is parsed by the BootROM.
1712# If the SPL build is enabled, the header will be added to the spl binary,
1713# and the spl binary and the u-boot.img will be combined into one file.
1714# Otherwise the header will be added to the u-boot.bin directly.
1715
1716ifeq ($(CONFIG_SPL),y)
1717spl/u-boot-spl-mtk.bin: spl/u-boot-spl
1718
1719u-boot-mtk.bin: u-boot-with-spl.bin
1720        $(call if_changed,copy)
1721else
1722MKIMAGEFLAGS_u-boot-mtk.bin = -T mtk_image \
1723        -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \
1724        -n "$(patsubst "%",%,$(CONFIG_MTK_BROM_HEADER_INFO))"
1725
1726u-boot-mtk.bin: u-boot.bin FORCE
1727        $(call if_changed,mkimage)
1728endif
1729
1730quiet_cmd_endian_swap = SWAP    $@
1731      cmd_endian_swap = $(srctree)/tools/endian-swap.py $< $@
1732
1733u-boot-swap.bin: u-boot.bin FORCE
1734        $(call if_changed,endian_swap)
1735
1736ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(ARCH)/Makefile.postlink)
1737
1738# Generate linker list symbols references to force compiler to not optimize
1739# them away when compiling with LTO
1740ifdef CONFIG_LTO
1741u-boot-keep-syms-lto := keep-syms-lto.o
1742u-boot-keep-syms-lto_c := $(patsubst %.o,%.c,$(u-boot-keep-syms-lto))
1743
1744quiet_cmd_keep_syms_lto = KSL     $@
1745      cmd_keep_syms_lto = \
1746        NM=$(NM) $(srctree)/scripts/gen_ll_addressable_symbols.sh $^ >$@
1747
1748quiet_cmd_keep_syms_lto_cc = KSLCC   $@
1749      cmd_keep_syms_lto_cc = \
1750        $(CC) $(filter-out $(LTO_CFLAGS),$(c_flags)) -c -o $@ $<
1751
1752$(u-boot-keep-syms-lto_c): $(u-boot-main)
1753        $(call if_changed,keep_syms_lto)
1754$(u-boot-keep-syms-lto): $(u-boot-keep-syms-lto_c)
1755        $(call if_changed,keep_syms_lto_cc)
1756else
1757u-boot-keep-syms-lto :=
1758endif
1759
1760# Rule to link u-boot
1761# May be overridden by arch/$(ARCH)/config.mk
1762ifdef CONFIG_LTO
1763quiet_cmd_u-boot__ ?= LTO     $@
1764      cmd_u-boot__ ?=                                                           \
1765                $(CC) -nostdlib -nostartfiles                                   \
1766                $(LTO_FINAL_LDFLAGS) $(c_flags)                                 \
1767                $(KBUILD_LDFLAGS:%=-Wl,%) $(LDFLAGS_u-boot:%=-Wl,%) -o $@       \
1768                -T u-boot.lds $(u-boot-init)                                    \
1769                -Wl,--whole-archive                                             \
1770                        $(u-boot-main)                                          \
1771                        $(u-boot-keep-syms-lto)                                 \
1772                        $(PLATFORM_LIBS)                                        \
1773                -Wl,--no-whole-archive                                          \
1774                -Wl,-Map,u-boot.map;                                            \
1775                $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
1776else
1777quiet_cmd_u-boot__ ?= LD      $@
1778      cmd_u-boot__ ?= $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_u-boot) -o $@           \
1779                -T u-boot.lds $(u-boot-init)                                    \
1780                --whole-archive                                                 \
1781                        $(u-boot-main)                                          \
1782                --no-whole-archive                                              \
1783                $(PLATFORM_LIBS) -Map u-boot.map;                               \
1784                $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
1785endif
1786
1787quiet_cmd_smap = GEN     common/system_map.o
1788cmd_smap = \
1789        smap=`$(call SYSTEM_MAP,u-boot) | \
1790                awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
1791        $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
1792                -c $(srctree)/common/system_map.c -o common/system_map.o
1793
1794u-boot: $(u-boot-init) $(u-boot-main) $(u-boot-keep-syms-lto) u-boot.lds FORCE
1795        +$(call if_changed,u-boot__)
1796ifeq ($(CONFIG_KALLSYMS),y)
1797        $(call cmd,smap)
1798        $(call cmd,u-boot__) common/system_map.o
1799endif
1800
1801ifeq ($(CONFIG_RISCV),y)
1802        @tools/prelink-riscv $@ 0
1803endif
1804
1805quiet_cmd_sym ?= SYM     $@
1806      cmd_sym ?= $(OBJDUMP) -t $< > $@
1807u-boot.sym: u-boot FORCE
1808        $(call if_changed,sym)
1809
1810# The actual objects are generated when descending,
1811# make sure no implicit rule kicks in
1812$(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
1813
1814# Handle descending into subdirectories listed in $(u-boot-dirs)
1815# Preset locale variables to speed up the build process. Limit locale
1816# tweaks to this spot to avoid wrong language settings when running
1817# make menuconfig etc.
1818# Error messages still appears in the original language
1819
1820PHONY += $(u-boot-dirs)
1821$(u-boot-dirs): prepare scripts
1822        $(Q)$(MAKE) $(build)=$@
1823
1824tools: prepare
1825# The "tools" are needed early
1826$(filter-out tools, $(u-boot-dirs)): tools
1827# The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
1828# is "yes"), so compile examples after U-Boot is compiled.
1829examples: $(filter-out examples, $(u-boot-dirs))
1830
1831define filechk_uboot.release
1832        echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1833endef
1834
1835# Store (new) UBOOTRELEASE string in include/config/uboot.release
1836include/config/uboot.release: include/config/auto.conf FORCE
1837        $(call filechk,uboot.release)
1838
1839
1840# Things we need to do before we recursively start building the kernel
1841# or the modules are listed in "prepare".
1842# A multi level approach is used. prepareN is processed before prepareN-1.
1843# archprepare is used in arch Makefiles and when processed asm symlink,
1844# version.h and scripts_basic is processed / created.
1845
1846# Listed in dependency order
1847PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1848
1849# prepare3 is used to check if we are building in a separate output directory,
1850# and if so do:
1851# 1) Check that make has not been executed in the kernel src $(srctree)
1852prepare3: include/config/uboot.release
1853ifneq ($(KBUILD_SRC),)
1854        @$(kecho) '  Using $(srctree) as source for U-Boot'
1855        $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
1856                echo >&2 "  $(srctree) is not clean, please run 'make mrproper'"; \
1857                echo >&2 "  in the '$(srctree)' directory.";\
1858                /bin/false; \
1859        fi;
1860endif
1861
1862# prepare2 creates a makefile if using a separate output directory
1863prepare2: prepare3 outputmakefile cfg
1864
1865prepare1: prepare2 $(version_h) $(timestamp_h) $(dt_h) \
1866                   include/config/auto.conf
1867ifeq ($(wildcard $(LDSCRIPT)),)
1868        @echo >&2 "  Could not find linker script."
1869        @/bin/false
1870endif
1871
1872ifeq ($(CONFIG_USE_DEFAULT_ENV_FILE),y)
1873prepare1: $(defaultenv_h)
1874endif
1875
1876archprepare: prepare1 scripts_basic
1877
1878prepare0: archprepare FORCE
1879        $(Q)$(MAKE) $(build)=.
1880
1881# All the preparing..
1882prepare: prepare0
1883
1884# Generate some files
1885# ---------------------------------------------------------------------------
1886
1887# Use sed to remove leading zeros from PATCHLEVEL to avoid using octal numbers
1888define filechk_version.h
1889        (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1890        echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1891        echo \#define U_BOOT_VERSION_NUM $(VERSION); \
1892        echo \#define U_BOOT_VERSION_NUM_PATCH $$(echo $(PATCHLEVEL) | \
1893                sed -e "s/^0*//"); \
1894        echo \#define CC_VERSION_STRING \"$$(LC_ALL=C $(CC) --version | head -n 1)\"; \
1895        echo \#define LD_VERSION_STRING \"$$(LC_ALL=C $(LD) --version | head -n 1)\"; )
1896endef
1897
1898# The SOURCE_DATE_EPOCH mechanism requires a date that behaves like GNU date.
1899# The BSD date on the other hand behaves different and would produce errors
1900# with the misused '-d' switch.  Respect that and search a working date with
1901# well known pre- and suffixes for the GNU variant of date.
1902define filechk_timestamp.h
1903        (if test -n "$${SOURCE_DATE_EPOCH}"; then \
1904                SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \
1905                DATE=""; \
1906                for date in gdate date.gnu date; do \
1907                        $${date} -u -d "$${SOURCE_DATE}" >/dev/null 2>&1 && DATE="$${date}"; \
1908                done; \
1909                if test -n "$${DATE}"; then \
1910                        LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DATE "%b %d %C%y"'; \
1911                        LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TIME "%T"'; \
1912                        LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TZ "%z"'; \
1913                        LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1914                        LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \
1915                        LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_EPOCH %s'; \
1916                else \
1917                        return 42; \
1918                fi; \
1919        else \
1920                LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1921                LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \
1922                LC_ALL=C date +'#define U_BOOT_TZ "%z"'; \
1923                LC_ALL=C date +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1924                LC_ALL=C date +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \
1925                LC_ALL=C date +'#define U_BOOT_EPOCH %s'; \
1926        fi)
1927endef
1928
1929define filechk_defaultenv.h
1930        ( { grep -v '^#' | grep -v '^$$' || true ; echo '' ; } | \
1931         tr '\n' '\0' | \
1932         sed -e 's/\\\x0\s*//g' | \
1933         xxd -i ; )
1934endef
1935
1936define filechk_dt.h
1937        (if test -n "$${DEVICE_TREE}"; then \
1938                echo \#define DEVICE_TREE \"$(DEVICE_TREE)\"; \
1939        else \
1940                echo \#define DEVICE_TREE CONFIG_DEFAULT_DEVICE_TREE; \
1941        fi)
1942endef
1943
1944$(version_h): include/config/uboot.release FORCE
1945        $(call filechk,version.h)
1946
1947$(timestamp_h): $(srctree)/Makefile FORCE
1948        $(call filechk,timestamp.h)
1949
1950$(dt_h): $(srctree)/Makefile FORCE
1951        $(call filechk,dt.h)
1952
1953$(defaultenv_h): $(CONFIG_DEFAULT_ENV_FILE:"%"=%) FORCE
1954        $(call filechk,defaultenv.h)
1955
1956# ---------------------------------------------------------------------------
1957quiet_cmd_cpp_lds = LDS     $@
1958cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) \
1959                -D__ASSEMBLY__ -x assembler-with-cpp -std=c99 -P -o $@ $<
1960
1961u-boot.lds: $(LDSCRIPT) prepare FORCE
1962        $(call if_changed_dep,cpp_lds)
1963
1964spl/u-boot-spl.bin: spl/u-boot-spl
1965        @:
1966        $(SPL_SIZE_CHECK)
1967
1968spl/u-boot-spl-dtb.bin: spl/u-boot-spl
1969        @:
1970
1971spl/u-boot-spl-dtb.hex: spl/u-boot-spl
1972        @:
1973
1974spl/u-boot-spl: tools prepare \
1975                $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb) \
1976                $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_TPL_OF_PLATDATA),dts/dt.dtb)
1977        $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all
1978
1979spl/sunxi-spl.bin: spl/u-boot-spl
1980        @:
1981
1982spl/sunxi-spl-with-ecc.bin: spl/sunxi-spl.bin
1983        @:
1984
1985spl/u-boot-spl.sfp: spl/u-boot-spl
1986        @:
1987
1988spl/boot.bin: spl/u-boot-spl
1989        @:
1990
1991tpl/u-boot-tpl.bin: tools prepare \
1992                $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb)
1993        $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
1994        $(TPL_SIZE_CHECK)
1995
1996TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
1997
1998FIND := find
1999FINDFLAGS := -L
2000
2001tags ctags:
2002                ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
2003                                                -name '*.[chS]' -print`
2004                ln -s ctags tags
2005
2006etags:
2007                etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
2008                                                -name '*.[chS]' -print`
2009cscope:
2010                $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
2011                                                cscope.files
2012                @find $(TAG_SUBDIRS) -name '*.[chS]' -type l -print | \
2013                        grep -xvf - cscope.files > cscope.files.no-symlinks; \
2014                mv cscope.files.no-symlinks cscope.files
2015                cscope -b -q -k
2016
2017SYSTEM_MAP = \
2018                $(NM) $1 | \
2019                grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
2020                LC_ALL=C sort
2021System.map:     u-boot
2022                @$(call SYSTEM_MAP,$<) > $@
2023
2024#########################################################################
2025
2026# ARM relocations should all be R_ARM_RELATIVE (32-bit) or
2027# R_AARCH64_RELATIVE (64-bit).
2028checkarmreloc: u-boot
2029        @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
2030                grep R_A | sort -u`"; \
2031        if test "$$RELOC" != "R_ARM_RELATIVE" -a \
2032                 "$$RELOC" != "R_AARCH64_RELATIVE"; then \
2033                echo "$< contains unexpected relocations: $$RELOC"; \
2034                false; \
2035        fi
2036
2037tools/version.h: include/version.h
2038        $(Q)mkdir -p $(dir $@)
2039        $(call if_changed,copy)
2040
2041envtools: scripts_basic $(version_h) $(timestamp_h) tools/version.h
2042        $(Q)$(MAKE) $(build)=tools/env
2043
2044tools-only: export TOOLS_ONLY=y
2045tools-only: scripts_basic $(version_h) $(timestamp_h) tools/version.h
2046        $(Q)$(MAKE) $(build)=tools
2047
2048tools-all: export HOST_TOOLS_ALL=y
2049tools-all: envtools tools ;
2050
2051cross_tools: export CROSS_BUILD_TOOLS=y
2052cross_tools: tools ;
2053
2054.PHONY : CHANGELOG
2055CHANGELOG:
2056        git log --no-merges U-Boot-1_1_5.. | \
2057        unexpand -a | sed -e 's/\s\s*$$//' > $@
2058
2059#########################################################################
2060
2061###
2062# Cleaning is done on three levels.
2063# make clean     Delete most generated files
2064#                Leave enough to build external modules
2065# make mrproper  Delete the current configuration, and all generated files
2066# make distclean Remove editor backup files, patch leftover files and the like
2067
2068# Directories & files removed with 'make clean'
2069CLEAN_DIRS  += $(MODVERDIR) \
2070               $(foreach d, spl tpl, $(patsubst %,$d/%, \
2071                        $(filter-out include, $(shell ls -1 $d 2>/dev/null))))
2072
2073CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h tools/version.h \
2074               boot* u-boot* MLO* SPL System.map fit-dtb.blob* \
2075               u-boot-ivt.img.log u-boot-dtb.imx.log SPL.log u-boot.imx.log \
2076               lpc32xx-* bl31.c bl31.elf bl31_*.bin image.map tispl.bin* \
2077               idbloader.img flash.bin flash.log defconfig keep-syms-lto.c
2078
2079# Directories & files removed with 'make mrproper'
2080MRPROPER_DIRS  += include/config include/generated spl tpl \
2081                  .tmp_objdiff doc/output
2082
2083# Remove include/asm symlink created by U-Boot before v2014.01
2084MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \
2085                  ctags etags tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
2086                  drivers/video/fonts/*.S include/asm
2087
2088# clean - Delete most, but leave enough to build external modules
2089#
2090clean: rm-dirs  := $(CLEAN_DIRS)
2091clean: rm-files := $(CLEAN_FILES)
2092
2093clean-dirs      := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
2094
2095clean-dirs      := $(addprefix _clean_, $(clean-dirs))
2096
2097PHONY += $(clean-dirs) clean archclean
2098$(clean-dirs):
2099        $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
2100
2101clean: $(clean-dirs)
2102        $(call cmd,rmdirs)
2103        $(call cmd,rmfiles)
2104        @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
2105                \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
2106                -o -name '*.ko.*' -o -name '*.su' -o -name '*.pyc' \
2107                -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
2108                -o -name '*.lex.c' -o -name '*.tab.[ch]' \
2109                -o -name '*.asn1.[ch]' \
2110                -o -name '*.symtypes' -o -name 'modules.order' \
2111                -o -name modules.builtin -o -name '.tmp_*.o.*' \
2112                -o -name 'dsdt.aml' -o -name 'dsdt.asl.tmp' -o -name 'dsdt.c' \
2113                -o -name '*.efi' -o -name '*.gcno' -o -name '*.so' \) \
2114                -type f -print | xargs rm -f
2115
2116# mrproper - Delete all generated files, including .config
2117#
2118mrproper: rm-dirs  := $(wildcard $(MRPROPER_DIRS))
2119mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
2120mrproper-dirs      := $(addprefix _mrproper_,scripts)
2121
2122PHONY += $(mrproper-dirs) mrproper archmrproper
2123$(mrproper-dirs):
2124        $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
2125
2126mrproper: clean $(mrproper-dirs)
2127        $(call cmd,rmdirs)
2128        $(call cmd,rmfiles)
2129        @rm -f arch/*/include/asm/arch
2130
2131# distclean
2132#
2133PHONY += distclean
2134
2135distclean: mrproper
2136        @find $(srctree) $(RCS_FIND_IGNORE) \
2137                \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
2138                -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
2139                -o -name '.*.rej' -o -name '*%' -o -name 'core' \
2140                -o -name '*.pyc' \) \
2141                -type f -print | xargs rm -f
2142        @rm -f boards.cfg CHANGELOG
2143
2144backup:
2145        F=`basename $(srctree)` ; cd .. ; \
2146        gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
2147
2148help:
2149        @echo  'Cleaning targets:'
2150        @echo  '  clean           - Remove most generated files but keep the config'
2151        @echo  '  mrproper        - Remove all generated files + config + various backup files'
2152        @echo  '  distclean       - mrproper + remove editor backup and patch files'
2153        @echo  ''
2154        @echo  'Configuration targets:'
2155        @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
2156        @echo  ''
2157        @echo  'Test targets:'
2158        @echo  ''
2159        @echo  '  check           - Run all automated tests that use sandbox'
2160        @echo  '  qcheck          - Run quick automated tests that use sandbox'
2161        @echo  '  tcheck          - Run quick automated tests on tools'
2162        @echo  ''
2163        @echo  'Other generic targets:'
2164        @echo  '  all             - Build all necessary images depending on configuration'
2165        @echo  '  tests           - Build U-Boot for sandbox and run tests'
2166        @echo  '* u-boot          - Build the bare u-boot'
2167        @echo  '  dir/            - Build all files in dir and below'
2168        @echo  '  dir/file.[oisS] - Build specified target only'
2169        @echo  '  dir/file.lst    - Build specified mixed source/assembly target only'
2170        @echo  '                    (requires a recent binutils and recent build (System.map))'
2171        @echo  '  tags/ctags      - Generate ctags file for editors'
2172        @echo  '  etags           - Generate etags file for editors'
2173        @echo  '  cscope          - Generate cscope index'
2174        @echo  '  ubootrelease    - Output the release version string (use with make -s)'
2175        @echo  '  ubootversion    - Output the version stored in Makefile (use with make -s)'
2176        @echo  "  cfg             - Don't build, just create the .cfg files"
2177        @echo  "  envtools        - Build only the target-side environment tools"
2178        @echo  ''
2179        @echo  'Static analysers'
2180        @echo  '  checkstack      - Generate a list of stack hogs'
2181        @echo  '  coccicheck      - Execute static code analysis with Coccinelle'
2182        @echo  ''
2183        @echo  'Documentation targets:'
2184        @$(MAKE) -f $(srctree)/doc/Makefile dochelp
2185        @echo  ''
2186        @echo  '  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
2187        @echo  '  make V=2   [targets] 2 => give reason for rebuild of target'
2188        @echo  '  make O=dir [targets] Locate all output files in "dir", including .config'
2189        @echo  '  make C=1   [targets] Check all c source with $$CHECK (sparse by default)'
2190        @echo  '  make C=2   [targets] Force check of all c source with $$CHECK'
2191        @echo  '  make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
2192        @echo  '  make W=n   [targets] Enable extra gcc checks, n=1,2,3 where'
2193        @echo  '                1: warnings which may be relevant and do not occur too often'
2194        @echo  '                2: warnings which occur quite often but may still be relevant'
2195        @echo  '                3: more obscure warnings, can most likely be ignored'
2196        @echo  '                Multiple levels can be combined with W=12 or W=123'
2197        @echo  ''
2198        @echo  'Execute "make" or "make all" to build all targets marked with [*] '
2199        @echo  'For further info see the ./README file'
2200
2201tests check:
2202        $(srctree)/test/run
2203
2204qcheck:
2205        $(srctree)/test/run quick
2206
2207tcheck:
2208        $(srctree)/test/run tools
2209
2210# Documentation targets
2211# ---------------------------------------------------------------------------
2212DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \
2213               linkcheckdocs dochelp refcheckdocs
2214PHONY += $(DOC_TARGETS)
2215$(DOC_TARGETS): scripts_basic FORCE
2216        $(Q)$(MAKE) $(build)=doc $@
2217
2218endif #ifeq ($(config-targets),1)
2219endif #ifeq ($(mixed-targets),1)
2220
2221PHONY += checkstack ubootrelease ubootversion
2222
2223checkstack:
2224        $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
2225        $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
2226
2227ubootrelease:
2228        @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
2229
2230ubootversion:
2231        @echo $(UBOOTVERSION)
2232
2233# Single targets
2234# ---------------------------------------------------------------------------
2235# Single targets are compatible with:
2236# - build with mixed source and output
2237# - build with separate output dir 'make O=...'
2238# - external modules
2239#
2240#  target-dir => where to store outputfile
2241#  build-dir  => directory in kernel source tree to use
2242
2243ifeq ($(KBUILD_EXTMOD),)
2244        build-dir  = $(patsubst %/,%,$(dir $@))
2245        target-dir = $(dir $@)
2246else
2247        zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
2248        build-dir  = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
2249        target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
2250endif
2251
2252%.s: %.c prepare scripts FORCE
2253        $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2254%.i: %.c prepare scripts FORCE
2255        $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2256%.o: %.c prepare scripts FORCE
2257        $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2258%.lst: %.c prepare scripts FORCE
2259        $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2260%.s: %.S prepare scripts FORCE
2261        $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2262%.o: %.S prepare scripts FORCE
2263        $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2264%.symtypes: %.c prepare scripts FORCE
2265        $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2266
2267# Modules
2268/: prepare scripts FORCE
2269        $(cmd_crmodverdir)
2270        $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
2271        $(build)=$(build-dir)
2272%/: prepare scripts FORCE
2273        $(cmd_crmodverdir)
2274        $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
2275        $(build)=$(build-dir)
2276%.ko: prepare scripts FORCE
2277        $(cmd_crmodverdir)
2278        $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1)   \
2279        $(build)=$(build-dir) $(@:.ko=.o)
2280        $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
2281
2282quiet_cmd_genenv = GENENV  $@
2283cmd_genenv = $(OBJCOPY) --dump-section .rodata.default_environment=$@ env/common.o; \
2284        sed --in-place -e 's/\x00/\x0A/g' $@
2285
2286u-boot-initial-env: u-boot.bin
2287        $(call if_changed,genenv)
2288
2289# Consistency checks
2290# ---------------------------------------------------------------------------
2291
2292PHONY += coccicheck
2293
2294coccicheck:
2295        $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
2296
2297# FIXME Should go into a make.lib or something
2298# ===========================================================================
2299
2300quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN   $(wildcard $(rm-dirs)))
2301      cmd_rmdirs = rm -rf $(rm-dirs)
2302
2303quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files)))
2304      cmd_rmfiles = rm -f $(rm-files)
2305
2306# read all saved command lines
2307
2308cmd_files := $(wildcard .*.cmd $(foreach f,$(sort $(targets)),$(dir $(f)).$(notdir $(f)).cmd))
2309
2310ifneq ($(cmd_files),)
2311  $(cmd_files): ;       # Do not try to update included dependency files
2312  include $(cmd_files)
2313endif
2314
2315endif   # skip-makefile
2316
2317PHONY += FORCE
2318FORCE:
2319
2320# Declare the contents of the PHONY variable as phony.  We keep that
2321# information in a variable so we can use it in if_changed and friends.
2322.PHONY: $(PHONY)
2323