1# SPDX-License-Identifier: GPL-2.0+ 2 3VERSION = 2023 4PATCHLEVEL = 07 5SUBLEVEL = 6EXTRAVERSION = -rc6 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# Do not use make's built-in rules and variables 16# (this increases performance and avoids hard-to-debug behaviour) 17MAKEFLAGS += -rR 18 19# Determine target architecture for the sandbox 20include include/host_arch.h 21ifeq ("", "$(CROSS_COMPILE)") 22 MK_ARCH="${shell uname -m}" 23else 24 MK_ARCH="${shell echo $(CROSS_COMPILE) | sed -n 's/^[[:space:]]*\([^\/]*\/\)*\([^-]*\)-[^[:space:]]*/\2/p'}" 25endif 26unexport HOST_ARCH 27ifeq ("x86_64", $(MK_ARCH)) 28 export HOST_ARCH=$(HOST_ARCH_X86_64) 29else ifneq (,$(findstring $(MK_ARCH), "i386" "i486" "i586" "i686")) 30 export HOST_ARCH=$(HOST_ARCH_X86) 31else ifneq (,$(findstring $(MK_ARCH), "aarch64" "armv8l")) 32 export HOST_ARCH=$(HOST_ARCH_AARCH64) 33else ifneq (,$(findstring $(MK_ARCH), "arm" "armv7" "armv7a" "armv7l")) 34 export HOST_ARCH=$(HOST_ARCH_ARM) 35else ifeq ("riscv32", $(MK_ARCH)) 36 export HOST_ARCH=$(HOST_ARCH_RISCV32) 37else ifeq ("riscv64", $(MK_ARCH)) 38 export HOST_ARCH=$(HOST_ARCH_RISCV64) 39endif 40undefine MK_ARCH 41 42# Avoid funny character set dependencies 43unexport LC_ALL 44LC_COLLATE=C 45LC_NUMERIC=C 46export LC_COLLATE LC_NUMERIC 47 48# Avoid interference with shell env settings 49unexport GREP_OPTIONS 50 51# We are using a recursive build, so we need to do a little thinking 52# to get the ordering right. 53# 54# Most importantly: sub-Makefiles should only ever modify files in 55# their own directory. If in some directory we have a dependency on 56# a file in another dir (which doesn't happen often, but it's often 57# unavoidable when linking the built-in.o targets which finally 58# turn into vmlinux), we will call a sub make in that other dir, and 59# after that we are sure that everything which is in that other dir 60# is now up to date. 61# 62# The only cases where we need to modify files which have global 63# effects are thus separated out and done before the recursive 64# descending is started. They are now explicitly listed as the 65# prepare rule. 66 67# Beautify output 68# --------------------------------------------------------------------------- 69# 70# Normally, we echo the whole command before executing it. By making 71# that echo $($(quiet)$(cmd)), we now have the possibility to set 72# $(quiet) to choose other forms of output instead, e.g. 73# 74# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 75# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 76# 77# If $(quiet) is empty, the whole command will be printed. 78# If it is set to "quiet_", only the short version will be printed. 79# If it is set to "silent_", nothing will be printed at all, since 80# the variable $(silent_cmd_cc_o_c) doesn't exist. 81# 82# A simple variant is to prefix commands with $(Q) - that's useful 83# for commands that shall be hidden in non-verbose mode. 84# 85# $(Q)ln $@ :< 86# 87# If KBUILD_VERBOSE equals 0 then the above command will be hidden. 88# If KBUILD_VERBOSE equals 1 then the above command is displayed. 89# 90# To put more focus on warnings, be less verbose as default 91# Use 'make V=1' to see the full commands 92 93ifeq ("$(origin V)", "command line") 94 KBUILD_VERBOSE = $(V) 95endif 96ifndef KBUILD_VERBOSE 97 KBUILD_VERBOSE = 0 98endif 99 100ifeq ($(KBUILD_VERBOSE),1) 101 quiet = 102 Q = 103else 104 quiet=quiet_ 105 Q = @ 106endif 107 108# If the user is running make -s (silent mode), suppress echoing of 109# commands 110 111ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4 112ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),) 113 quiet=silent_ 114endif 115else # make-3.8x 116ifneq ($(filter s% -s%,$(MAKEFLAGS)),) 117 quiet=silent_ 118endif 119endif 120 121export quiet Q KBUILD_VERBOSE 122 123# kbuild supports saving output files in a separate directory. 124# To locate output files in a separate directory two syntaxes are supported. 125# In both cases the working directory must be the root of the kernel src. 126# 1) O= 127# Use "make O=dir/to/store/output/files/" 128# 129# 2) Set KBUILD_OUTPUT 130# Set the environment variable KBUILD_OUTPUT to point to the directory 131# where the output files shall be placed. 132# export KBUILD_OUTPUT=dir/to/store/output/files/ 133# make 134# 135# The O= assignment takes precedence over the KBUILD_OUTPUT environment 136# variable. 137 138# KBUILD_SRC is set on invocation of make in OBJ directory 139# KBUILD_SRC is not intended to be used by the regular user (for now) 140ifeq ($(KBUILD_SRC),) 141 142# OK, Make called in directory where kernel src resides 143# Do we want to locate output files in a separate directory? 144ifeq ("$(origin O)", "command line") 145 KBUILD_OUTPUT := $(O) 146endif 147 148# That's our default target when none is given on the command line 149PHONY := _all 150_all: 151 152# Cancel implicit rules on top Makefile 153$(CURDIR)/Makefile Makefile: ; 154 155ifneq ($(KBUILD_OUTPUT),) 156# Invoke a second make in the output directory, passing relevant variables 157# check that the output directory actually exists 158saved-output := $(KBUILD_OUTPUT) 159KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ 160 && /bin/pwd) 161$(if $(KBUILD_OUTPUT),, \ 162 $(error failed to create output directory "$(saved-output)")) 163 164# Look for make include files relative to root of kernel src 165# 166# This does not become effective immediately because MAKEFLAGS is re-parsed 167# once after the Makefile is read. It is OK since we are going to invoke 168# 'sub-make' below. 169MAKEFLAGS += --include-dir=$(CURDIR) 170 171PHONY += $(MAKECMDGOALS) sub-make 172 173$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make 174 @: 175 176sub-make: FORCE 177 $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ 178 -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) 179 180# Leave processing to above invocation of make 181skip-makefile := 1 182endif # ifneq ($(KBUILD_OUTPUT),) 183endif # ifeq ($(KBUILD_SRC),) 184 185# We process the rest of the Makefile if this is the final invocation of make 186ifeq ($(skip-makefile),) 187 188# Do not print "Entering directory ...", 189# but we want to display it when entering to the output directory 190# so that IDEs/editors are able to understand relative filenames. 191MAKEFLAGS += --no-print-directory 192 193# Call a source code checker (by default, "sparse") as part of the 194# C compilation. 195# 196# Use 'make C=1' to enable checking of only re-compiled files. 197# Use 'make C=2' to enable checking of *all* source files, regardless 198# of whether they are re-compiled or not. 199# 200# See the file "doc/sparse.txt" for more details, including 201# where to get the "sparse" utility. 202 203ifeq ("$(origin C)", "command line") 204 KBUILD_CHECKSRC = $(C) 205endif 206ifndef KBUILD_CHECKSRC 207 KBUILD_CHECKSRC = 0 208endif 209 210# Use make M=dir to specify directory of external module to build 211# Old syntax make ... SUBDIRS=$PWD is still supported 212# Setting the environment variable KBUILD_EXTMOD take precedence 213ifdef SUBDIRS 214 KBUILD_EXTMOD ?= $(SUBDIRS) 215endif 216 217ifeq ("$(origin M)", "command line") 218 KBUILD_EXTMOD := $(M) 219endif 220 221# If building an external module we do not care about the all: rule 222# but instead _all depend on modules 223PHONY += all 224ifeq ($(KBUILD_EXTMOD),) 225_all: all 226else 227_all: modules 228endif 229 230ifeq ($(KBUILD_SRC),) 231 # building in the source tree 232 srctree := . 233else 234 ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR))) 235 # building in a subdirectory of the source tree 236 srctree := .. 237 else 238 srctree := $(KBUILD_SRC) 239 endif 240endif 241objtree := . 242src := $(srctree) 243obj := $(objtree) 244 245VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 246 247export srctree objtree VPATH 248 249# Make sure CDPATH settings don't interfere 250unexport CDPATH 251 252######################################################################### 253 254HOSTARCH := $(shell uname -m | \ 255 sed -e s/i.86/x86/ \ 256 -e s/sun4u/sparc64/ \ 257 -e s/arm.*/arm/ \ 258 -e s/sa110/arm/ \ 259 -e s/ppc64/powerpc/ \ 260 -e s/ppc/powerpc/ \ 261 -e s/macppc/powerpc/\ 262 -e s/sh.*/sh/) 263 264HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \ 265 sed -e 's/\(cygwin\).*/cygwin/') 266 267export HOSTARCH HOSTOS 268 269######################################################################### 270 271# set default to nothing for native builds 272ifeq ($(HOSTARCH),$(ARCH)) 273CROSS_COMPILE ?= 274endif 275 276KCONFIG_CONFIG ?= .config 277export KCONFIG_CONFIG 278 279# SHELL used by kbuild 280CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 281 else if [ -x /bin/bash ]; then echo /bin/bash; \ 282 else echo sh; fi ; fi) 283 284HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null) 285HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null) 286HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null) 287 288HOSTCC = cc 289HOSTCXX = c++ 290KBUILD_HOSTCFLAGS := -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \ 291 $(HOST_LFS_CFLAGS) $(HOSTCFLAGS) 292KBUILD_HOSTCXXFLAGS := -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS) 293KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS) 294KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS) 295 296# With the move to GCC 6, we have implicitly upgraded our language 297# standard to GNU11 (see https://gcc.gnu.org/gcc-5/porting_to.html). 298# Some Linux distributions (including RHEL7, SLES13, Debian 8) still 299# have older compilers as their default, so we make it explicit for 300# these that our host tools are GNU11 (i.e. C11 w/ GNU extensions). 301CSTD_FLAG := -std=gnu11 302KBUILD_HOSTCFLAGS += $(CSTD_FLAG) 303 304ifeq ($(HOSTOS),cygwin) 305KBUILD_HOSTCFLAGS += -ansi 306endif 307 308# Mac OS X / Darwin's C preprocessor is Apple specific. It 309# generates numerous errors and warnings. We want to bypass it 310# and use GNU C's cpp. To do this we pass the -traditional-cpp 311# option to the compiler. Note that the -traditional-cpp flag 312# DOES NOT have the same semantics as GNU C's flag, all it does 313# is invoke the GNU preprocessor in stock ANSI/ISO C fashion. 314# 315# Apple's linker is similar, thanks to the new 2 stage linking 316# multiple symbol definitions are treated as errors, hence the 317# -multiply_defined suppress option to turn off this error. 318# 319ifeq ($(HOSTOS),darwin) 320# get major and minor product version (e.g. '10' and '6' for Snow Leopard) 321DARWIN_MAJOR_VERSION := $(shell sw_vers -productVersion | cut -f 1 -d '.') 322DARWIN_MINOR_VERSION := $(shell sw_vers -productVersion | cut -f 2 -d '.') 323 324os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \ 325 $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;) 326 327os_x_after = $(shell if [ $(DARWIN_MAJOR_VERSION) -ge $(1) -a \ 328 $(DARWIN_MINOR_VERSION) -ge $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;) 329 330# Snow Leopards build environment has no longer restrictions as described above 331HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc") 332KBUILD_HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp") 333KBUILD_HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress") 334 335# macOS Mojave (10.14.X) 336# Undefined symbols for architecture x86_64: "_PyArg_ParseTuple" 337KBUILD_HOSTLDFLAGS += $(call os_x_after, 10, 14, "-lpython -dynamclib", "") 338endif 339 340# Decide whether to build built-in, modular, or both. 341# Normally, just do built-in. 342 343KBUILD_MODULES := 344KBUILD_BUILTIN := 1 345 346# If we have only "make modules", don't compile built-in objects. 347# When we're building modules with modversions, we need to consider 348# the built-in objects during the descend as well, in order to 349# make sure the checksums are up to date before we record them. 350 351ifeq ($(MAKECMDGOALS),modules) 352 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) 353endif 354 355# If we have "make <whatever> modules", compile modules 356# in addition to whatever we do anyway. 357# Just "make" or "make all" shall build modules as well 358 359# U-Boot does not need modules 360#ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) 361# KBUILD_MODULES := 1 362#endif 363 364#ifeq ($(MAKECMDGOALS),) 365# KBUILD_MODULES := 1 366#endif 367 368# Check ths size of a binary: 369# Args: 370# $1: File to check 371# #2: Size limit in bytes (decimal or 0xhex) 372define size_check 373 actual=$$( wc -c $1 | awk '{print $$1}'); \ 374 limit=$$( printf "%d" $2 ); \ 375 if test $$actual -gt $$limit; then \ 376 echo "$1 exceeds file size limit:" >&2; \ 377 echo " limit: $$(printf %#x $$limit) bytes" >&2; \ 378 echo " actual: $$(printf %#x $$actual) bytes" >&2; \ 379 echo " excess: $$(printf %#x $$((actual - limit))) bytes" >&2;\ 380 exit 1; \ 381 fi 382endef 383export size_check 384 385export KBUILD_MODULES KBUILD_BUILTIN 386export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD 387 388# We need some generic definitions (do not try to remake the file). 389scripts/Kbuild.include: ; 390include scripts/Kbuild.include 391 392# Make variables (CC, etc...) 393 394AS = $(CROSS_COMPILE)as 395# Always use GNU ld 396ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),) 397LD = $(CROSS_COMPILE)ld.bfd 398else 399LD = $(CROSS_COMPILE)ld 400endif 401CC = $(CROSS_COMPILE)gcc 402CPP = $(CC) -E 403AR = $(CROSS_COMPILE)ar 404NM = $(CROSS_COMPILE)nm 405LDR = $(CROSS_COMPILE)ldr 406STRIP = $(CROSS_COMPILE)strip 407OBJCOPY = $(CROSS_COMPILE)objcopy 408OBJDUMP = $(CROSS_COMPILE)objdump 409LEX = flex 410YACC = bison 411AWK = awk 412PERL = perl 413PYTHON ?= python 414PYTHON2 = python2 415PYTHON3 ?= python3 416 417# The devicetree compiler and pylibfdt are automatically built unless DTC is 418# provided. If DTC is provided, it is assumed the pylibfdt is available too. 419DTC_INTREE := $(objtree)/scripts/dtc/dtc 420DTC ?= $(DTC_INTREE) 421DTC_MIN_VERSION := 010406 422 423CHECK = sparse 424 425CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 426 -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF) 427 428KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__ 429 430KBUILD_CFLAGS := -Wall -Wstrict-prototypes \ 431 -Wno-format-security \ 432 -fno-builtin -ffreestanding $(CSTD_FLAG) 433KBUILD_CFLAGS += -fshort-wchar -fno-strict-aliasing 434KBUILD_AFLAGS := -D__ASSEMBLY__ 435KBUILD_LDFLAGS := 436 437ifeq ($(cc-name),clang) 438ifneq ($(CROSS_COMPILE),) 439CLANG_TARGET := --target=$(notdir $(CROSS_COMPILE:%-=%)) 440LDPPFLAGS += $(CLANG_TARGET) 441GCC_TOOLCHAIN_DIR := $(dir $(shell which $(LD))) 442CLANG_PREFIX := --prefix=$(GCC_TOOLCHAIN_DIR) 443GCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..) 444endif 445ifneq ($(GCC_TOOLCHAIN),) 446CLANG_GCC_TC := --gcc-toolchain=$(GCC_TOOLCHAIN) 447endif 448KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) $(CLANG_PREFIX) 449KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) $(CLANG_PREFIX) 450KBUILD_CFLAGS += $(call cc-option, -no-integrated-as) 451KBUILD_AFLAGS += $(call cc-option, -no-integrated-as) 452endif 453 454# Don't generate position independent code 455KBUILD_CFLAGS += $(call cc-option,-fno-PIE) 456KBUILD_AFLAGS += $(call cc-option,-fno-PIE) 457 458# Read UBOOTRELEASE from include/config/uboot.release (if it exists) 459UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null) 460UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 461 462export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION 463export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR 464export CONFIG_SHELL HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC 465export CPP AR NM LDR STRIP OBJCOPY OBJDUMP KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS 466export MAKE LEX YACC AWK PERL PYTHON PYTHON2 PYTHON3 467export HOSTCXX KBUILD_HOSTCXXFLAGS CHECK CHECKFLAGS DTC DTC_FLAGS 468 469export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS 470export KBUILD_CFLAGS KBUILD_AFLAGS 471 472export CC_VERSION_TEXT := $(shell $(CC) --version | head -n 1) 473 474# When compiling out-of-tree modules, put MODVERDIR in the module 475# tree rather than in the kernel tree. The kernel tree might 476# even be read-only. 477export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 478 479# Files to ignore in find ... statements 480 481export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 482 -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 483 -prune -o 484export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ 485 --exclude CVS --exclude .pc --exclude .hg --exclude .git 486 487# =========================================================================== 488# Rules shared between *config targets and build targets 489 490# Basic helpers built in scripts/ 491PHONY += scripts_basic 492scripts_basic: 493 $(Q)$(MAKE) $(build)=scripts/basic 494 $(Q)rm -f .tmp_quiet_recordmcount 495 496# To avoid any implicit rule to kick in, define an empty command. 497scripts/basic/%: scripts_basic ; 498 499PHONY += outputmakefile 500# outputmakefile generates a Makefile in the output directory, if using a 501# separate output directory. This allows convenient use of make in the 502# output directory. 503outputmakefile: 504ifneq ($(KBUILD_SRC),) 505 $(Q)ln -fsn $(srctree) source 506 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree) 507endif 508 509# To make sure we do not include .config for any of the *config targets 510# catch them early, and hand them over to scripts/kconfig/Makefile 511# It is allowed to specify more targets when calling make, including 512# mixing *config targets and build targets. 513# For example 'make oldconfig all'. 514# Detect when mixed targets is specified, and make a second invocation 515# of make so .config is not included in this case either (for *config). 516 517version_h := include/generated/version_autogenerated.h 518timestamp_h := include/generated/timestamp_autogenerated.h 519defaultenv_h := include/generated/defaultenv_autogenerated.h 520dt_h := include/generated/dt.h 521env_h := include/generated/environment.h 522 523no-dot-config-targets := clean clobber mrproper distclean \ 524 help %docs check% coccicheck \ 525 ubootversion backup tests check pcheck qcheck tcheck \ 526 pylint pylint_err _pip pip pip_test pip_release 527 528config-targets := 0 529mixed-targets := 0 530dot-config := 1 531 532ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 533 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 534 dot-config := 0 535 endif 536endif 537 538ifeq ($(KBUILD_EXTMOD),) 539 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 540 config-targets := 1 541 ifneq ($(words $(MAKECMDGOALS)),1) 542 mixed-targets := 1 543 endif 544 endif 545endif 546 547ifeq ($(mixed-targets),1) 548# =========================================================================== 549# We're called with mixed targets (*config and build targets). 550# Handle them one by one. 551 552PHONY += $(MAKECMDGOALS) __build_one_by_one 553 554$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one 555 @: 556 557__build_one_by_one: 558 $(Q)set -e; \ 559 for i in $(MAKECMDGOALS); do \ 560 $(MAKE) -f $(srctree)/Makefile $$i; \ 561 done 562 563else 564ifeq ($(config-targets),1) 565# =========================================================================== 566# *config targets only - make sure prerequisites are updated, and descend 567# in scripts/kconfig to make the *config target 568 569KBUILD_DEFCONFIG := sandbox_defconfig 570export KBUILD_DEFCONFIG KBUILD_KCONFIG 571 572config: scripts_basic outputmakefile FORCE 573 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 574 575%config: scripts_basic outputmakefile FORCE 576 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 577 578else 579# =========================================================================== 580# Build targets only - this includes vmlinux, arch specific targets, clean 581# targets and others. In general all targets except *config targets. 582 583# Additional helpers built in scripts/ 584# Carefully list dependencies so we do not try to build scripts twice 585# in parallel 586PHONY += scripts 587scripts: scripts_basic scripts_dtc include/config/auto.conf 588 $(Q)$(MAKE) $(build)=$(@) 589 590ifeq ($(dot-config),1) 591# Read in config 592-include include/config/auto.conf 593 594# Read in dependencies to all Kconfig* files, make sure to run 595# oldconfig if changes are detected. 596-include include/config/auto.conf.cmd 597 598# To avoid any implicit rule to kick in, define an empty command 599$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; 600 601# If .config is newer than include/config/auto.conf, someone tinkered 602# with it and forgot to run make oldconfig. 603# if auto.conf.cmd is missing then we are probably in a cleaned tree so 604# we execute the config step to be sure to catch updated Kconfig files 605include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd 606 $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig 607 @# If the following part fails, include/config/auto.conf should be 608 @# deleted so "make silentoldconfig" will be re-run on the next build. 609 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf || \ 610 { rm -f include/config/auto.conf; false; } 611 @# include/config.h has been updated after "make silentoldconfig". 612 @# We need to touch include/config/auto.conf so it gets newer 613 @# than include/config.h. 614 @# Otherwise, 'make silentoldconfig' would be invoked twice. 615 $(Q)touch include/config/auto.conf 616 617u-boot.cfg spl/u-boot.cfg tpl/u-boot.cfg: 618 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf $(@) 619 620-include include/autoconf.mk 621-include include/autoconf.mk.dep 622 623# We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf 624# is up-to-date. When we switch to a different board configuration, old CONFIG 625# macros are still remaining in include/config/auto.conf. Without the following 626# gimmick, wrong config.mk would be included leading nasty warnings/errors. 627ifneq ($(wildcard $(KCONFIG_CONFIG)),) 628ifneq ($(wildcard include/config/auto.conf),) 629autoconf_is_old := $(shell find . -path ./$(KCONFIG_CONFIG) -newer \ 630 include/config/auto.conf) 631ifeq ($(autoconf_is_old),) 632include config.mk 633include arch/$(ARCH)/Makefile 634endif 635endif 636endif 637 638# These are set by the arch-specific config.mk. Make sure they are exported 639# so they can be used when building an EFI application. 640export EFI_LDS # Filename of EFI link script in arch/$(ARCH)/lib 641export EFI_CRT0 # Filename of EFI CRT0 in arch/$(ARCH)/lib 642export EFI_RELOC # Filename of EFU relocation code in arch/$(ARCH)/lib 643export CFLAGS_EFI # Compiler flags to add when building EFI app 644export CFLAGS_NON_EFI # Compiler flags to remove when building EFI app 645export EFI_TARGET # binutils target if EFI is natively supported 646 647export LTO_ENABLE 648 649# This is y if LTO is enabled for this build. See NO_LTO=1 to disable LTO 650ifeq ($(NO_LTO),) 651LTO_ENABLE=$(if $(CONFIG_LTO),y) 652endif 653 654# If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use 655# that (or fail if absent). Otherwise, search for a linker script in a 656# standard location. 657 658ifndef LDSCRIPT 659 #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug 660 ifdef CONFIG_SYS_LDSCRIPT 661 # need to strip off double quotes 662 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%) 663 endif 664endif 665 666# If there is no specified link script, we look in a number of places for it 667ifndef LDSCRIPT 668 ifeq ($(wildcard $(LDSCRIPT)),) 669 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds 670 endif 671 ifeq ($(wildcard $(LDSCRIPT)),) 672 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds 673 endif 674 ifeq ($(wildcard $(LDSCRIPT)),) 675 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds 676 endif 677endif 678 679else 680# Dummy target needed, because used as prerequisite 681include/config/auto.conf: ; 682endif # $(dot-config) 683 684ifdef CONFIG_CC_OPTIMIZE_FOR_DEBUG 685KBUILD_HOSTCFLAGS := -Wall -Wstrict-prototypes -Og -g -fomit-frame-pointer \ 686 $(HOST_LFS_CFLAGS) $(HOSTCFLAGS) 687# Avoid false positives -Wmaybe-uninitialized 688# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78394 689KBUILD_HOSTCFLAGS += -Wno-maybe-uninitialized 690KBUILD_HOSTCXXFLAGS := -Og -g $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS) 691endif 692 693# 694# Xtensa linker script cannot be preprocessed with -ansi because of 695# preprocessor operations on strings that don't make C identifiers. 696# 697ifeq ($(CONFIG_XTENSA),) 698LDPPFLAGS += -ansi 699endif 700 701ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 702KBUILD_CFLAGS += -Os 703endif 704 705ifdef CONFIG_CC_OPTIMIZE_FOR_SPEED 706KBUILD_CFLAGS += -O2 707endif 708 709ifdef CONFIG_CC_OPTIMIZE_FOR_DEBUG 710KBUILD_CFLAGS += -Og -Wno-maybe-uninitialized 711# Avoid false positives -Wmaybe-uninitialized 712# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78394 713KBUILD_CFLAGS += -Wno-maybe-uninitialized 714endif 715 716LTO_CFLAGS := 717LTO_FINAL_LDFLAGS := 718export LTO_CFLAGS LTO_FINAL_LDFLAGS 719ifeq ($(LTO_ENABLE),y) 720 ifeq ($(cc-name),clang) 721 LTO_CFLAGS += -DLTO_ENABLE -flto 722 LTO_FINAL_LDFLAGS += -flto 723 724 AR = $(shell $(CC) -print-prog-name=llvm-ar) 725 NM = $(shell $(CC) -print-prog-name=llvm-nm) 726 else 727 NPROC := $(shell nproc 2>/dev/null || echo 1) 728 LTO_CFLAGS += -DLTO_ENABLE -flto=$(NPROC) 729 LTO_FINAL_LDFLAGS += -fuse-linker-plugin -flto=$(NPROC) 730 731 # use plugin aware tools 732 AR = $(CROSS_COMPILE)gcc-ar 733 NM = $(CROSS_COMPILE)gcc-nm 734 endif 735 736 CFLAGS_NON_EFI += $(LTO_CFLAGS) 737 738 KBUILD_CFLAGS += $(LTO_CFLAGS) 739endif 740 741ifeq ($(CONFIG_STACKPROTECTOR),y) 742KBUILD_CFLAGS += $(call cc-option,-fstack-protector-strong) 743CFLAGS_EFI += $(call cc-option,-fno-stack-protector) 744else 745KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) 746endif 747KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks) 748 749# disable pointer signed / unsigned warnings in gcc 4.0 750KBUILD_CFLAGS += -Wno-pointer-sign 751 752# disable stringop warnings in gcc 8+ 753KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) 754 755KBUILD_CFLAGS += $(call cc-disable-warning, zero-length-bounds) 756KBUILD_CFLAGS += $(call cc-disable-warning, array-bounds) 757KBUILD_CFLAGS += $(call cc-disable-warning, stringop-overflow) 758 759# Enabled with W=2, disabled by default as noisy 760KBUILD_CFLAGS += $(call cc-disable-warning, maybe-uninitialized) 761 762# change __FILE__ to the relative path from the srctree 763KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) 764 765KBUILD_CFLAGS += -gdwarf-4 766# $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format> 767# option to the assembler. 768KBUILD_AFLAGS += -gdwarf-4 769 770# Report stack usage if supported 771# ARC tools based on GCC 7.1 has an issue with stack usage 772# with naked functions, see commit message for more details 773ifndef CONFIG_ARC 774ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y) 775 KBUILD_CFLAGS += -fstack-usage 776endif 777endif 778 779KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral) 780KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) 781 782ifdef CONFIG_CC_IS_CLANG 783KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) 784KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) 785KBUILD_CFLAGS += $(call cc-disable-warning, gnu) 786KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) 787# Quiet clang warning: comparison of unsigned expression < 0 is always false 788KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare) 789# CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the 790# source of a reference will be _MergedGlobals and not on of the whitelisted names. 791# See modpost pattern 2 792KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,) 793KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) 794KBUILD_CFLAGS += $(call cc-disable-warning, deprecated-non-prototype) 795endif 796 797# These warnings generated too much noise in a regular build. 798# Use make W=1 to enable them (see scripts/Makefile.extrawarn) 799KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) 800 801# Prohibit date/time macros, which would make the build non-deterministic 802KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) 803 804include scripts/Makefile.extrawarn 805 806# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 807KBUILD_CPPFLAGS += $(KCPPFLAGS) 808KBUILD_AFLAGS += $(KAFLAGS) 809KBUILD_CFLAGS += $(KCFLAGS) 810 811KBUILD_LDFLAGS += -z noexecstack 812KBUILD_LDFLAGS += $(call ld-option,--no-warn-rwx-segments) 813 814KBUILD_HOSTCFLAGS += $(if $(CONFIG_TOOLS_DEBUG),-g) 815 816# Use UBOOTINCLUDE when you must reference the include/ directory. 817# Needed to be compatible with the O= option 818UBOOTINCLUDE := \ 819 -Iinclude \ 820 $(if $(KBUILD_SRC), -I$(srctree)/include) \ 821 $(if $(CONFIG_$(SPL_)SYS_THUMB_BUILD), \ 822 $(if $(CONFIG_HAS_THUMB2), \ 823 $(if $(CONFIG_CPU_V7M), \ 824 -I$(srctree)/arch/arm/thumb1/include), \ 825 -I$(srctree)/arch/arm/thumb1/include)) \ 826 -I$(srctree)/arch/$(ARCH)/include \ 827 -include $(srctree)/include/linux/kconfig.h 828 829NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 830 831# FIX ME 832cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \ 833 $(NOSTDINC_FLAGS) 834c_flags := $(KBUILD_CFLAGS) $(cpp_flags) 835 836######################################################################### 837# U-Boot objects....order is important (i.e. start must be first) 838 839HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n) 840 841libs-$(CONFIG_API) += api/ 842libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/ 843libs-y += boot/ 844libs-y += cmd/ 845libs-y += common/ 846libs-$(CONFIG_OF_EMBED) += dts/ 847libs-y += env/ 848libs-y += lib/ 849libs-y += fs/ 850libs-y += net/ 851libs-y += disk/ 852libs-y += drivers/ 853libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/ 854libs-$(CONFIG_SYS_FSL_MMDC) += drivers/ddr/fsl/ 855libs-$(CONFIG_$(SPL_)ALTERA_SDRAM) += drivers/ddr/altera/ 856libs-y += drivers/usb/cdns3/ 857libs-y += drivers/usb/dwc3/ 858libs-y += drivers/usb/common/ 859libs-y += drivers/usb/emul/ 860libs-y += drivers/usb/eth/ 861libs-$(CONFIG_USB_DEVICE) += drivers/usb/gadget/ 862libs-$(CONFIG_USB_GADGET) += drivers/usb/gadget/ 863libs-$(CONFIG_USB_GADGET) += drivers/usb/gadget/udc/ 864libs-y += drivers/usb/host/ 865libs-y += drivers/usb/mtu3/ 866libs-y += drivers/usb/musb/ 867libs-y += drivers/usb/musb-new/ 868libs-y += drivers/usb/isp1760/ 869libs-y += drivers/usb/phy/ 870libs-y += drivers/usb/ulpi/ 871ifdef CONFIG_POST 872libs-y += post/ 873endif 874libs-$(CONFIG_$(SPL_TPL_)UNIT_TEST) += test/ 875libs-$(CONFIG_UT_ENV) += test/env/ 876libs-$(CONFIG_UT_OPTEE) += test/optee/ 877libs-$(CONFIG_UT_OVERLAY) += test/overlay/ 878 879libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/) 880 881libs-y := $(sort $(libs-y)) 882 883u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples 884 885u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-)))) 886 887libs-y := $(patsubst %/, %/built-in.o, $(libs-y)) 888 889u-boot-init := $(head-y) 890u-boot-main := $(libs-y) 891 892 893# Add GCC lib 894ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y) 895PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a 896else 897ifndef CONFIG_CC_IS_CLANG 898PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc 899endif 900endif 901PLATFORM_LIBS += $(PLATFORM_LIBGCC) 902 903ifdef CONFIG_CC_COVERAGE 904KBUILD_CFLAGS += --coverage 905PLATFORM_LIBGCC += -lgcov 906endif 907 908export PLATFORM_LIBS 909export PLATFORM_LIBGCC 910 911# Special flags for CPP when processing the linker script. 912# Pass the version down so we can handle backwards compatibility 913# on the fly. 914LDPPFLAGS += \ 915 -include $(srctree)/include/u-boot/u-boot.lds.h \ 916 -DCPUDIR=$(CPUDIR) \ 917 $(shell $(LD) --version | \ 918 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p') 919 920######################################################################### 921######################################################################### 922 923ifneq ($(CONFIG_BOARD_SIZE_LIMIT),) 924BOARD_SIZE_CHECK= @ $(call size_check,$@,$(CONFIG_BOARD_SIZE_LIMIT)) 925else 926BOARD_SIZE_CHECK = 927endif 928 929ifneq ($(CONFIG_SPL_SIZE_LIMIT),0x0) 930SPL_SIZE_CHECK = @$(call size_check,$@,$$(tools/spl_size_limit)) 931else 932SPL_SIZE_CHECK = 933endif 934 935ifneq ($(CONFIG_TPL_SIZE_LIMIT),0x0) 936TPL_SIZE_CHECK = @$(call size_check,$@,$(CONFIG_TPL_SIZE_LIMIT)) 937else 938TPL_SIZE_CHECK = 939endif 940 941ifneq ($(CONFIG_VPL_SIZE_LIMIT),0x0) 942VPL_SIZE_CHECK = @$(call size_check,$@,$(CONFIG_VPL_SIZE_LIMIT)) 943else 944VPL_SIZE_CHECK = 945endif 946 947# Statically apply RELA-style relocations (currently arm64 only) 948# This is useful for arm64 where static relocation needs to be performed on 949# the raw binary, but certain simulators only accept an ELF file (but don't 950# do the relocation). 951ifneq ($(CONFIG_STATIC_RELA),) 952# $(2) is u-boot ELF, $(3) is u-boot bin, $(4) is text base 953quiet_cmd_static_rela = RELOC $@ 954cmd_static_rela = \ 955 tools/relocate-rela $(3) $(2) 956else 957quiet_cmd_static_rela = 958cmd_static_rela = 959endif 960 961# Always append INPUTS so that arch config.mk's can add custom ones 962INPUTS-y += u-boot.srec u-boot.bin u-boot.sym System.map binary_size_check 963 964ifeq ($(CONFIG_SPL_FSL_PBL),y) 965INPUTS-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin 966else 967ifneq ($(CONFIG_NXP_ESBC), y) 968# For Secure Boot The Image needs to be signed and Header must also 969# be included. So The image has to be built explicitly 970INPUTS-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl 971endif 972endif 973INPUTS-$(CONFIG_SPL) += spl/u-boot-spl.bin 974ifeq ($(CONFIG_MX6)$(CONFIG_IMX_HAB), yy) 975INPUTS-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img 976else 977ifeq ($(CONFIG_MX7)$(CONFIG_IMX_HAB), yy) 978INPUTS-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img 979else 980INPUTS-$(CONFIG_SPL_FRAMEWORK) += u-boot.img 981endif 982endif 983INPUTS-$(CONFIG_TPL) += tpl/u-boot-tpl.bin 984INPUTS-$(CONFIG_VPL) += vpl/u-boot-vpl.bin 985 986# Allow omitting the .dtb output if it is not normally used 987INPUTS-$(CONFIG_OF_SEPARATE) += $(if $(CONFIG_OF_OMIT_DTB),dts/dt.dtb,u-boot.dtb) 988ifeq ($(CONFIG_SPL_FRAMEWORK),y) 989INPUTS-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img 990endif 991INPUTS-$(CONFIG_SANDBOX) += u-boot.dtb 992ifneq ($(CONFIG_SPL_TARGET),) 993INPUTS-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%) 994endif 995INPUTS-$(CONFIG_REMAKE_ELF) += u-boot.elf 996INPUTS-$(CONFIG_EFI_APP) += u-boot-app.efi 997INPUTS-$(CONFIG_EFI_STUB) += u-boot-payload.efi 998 999# Generate this input file for binman 1000ifeq ($(CONFIG_SPL),)
1001INPUTS-$(CONFIG_ARCH_MEDIATEK) += u-boot-mtk.bin 1002endif 1003 1004# Add optional build target if defined in board/cpu/soc headers 1005ifneq ($(CONFIG_BUILD_TARGET),) 1006INPUTS-y += $(CONFIG_BUILD_TARGET:"%"=%) 1007endif 1008 1009ifeq ($(CONFIG_INIT_SP_RELATIVE)$(CONFIG_OF_SEPARATE),yy) 1010INPUTS-y += init_sp_bss_offset_check 1011endif 1012 1013ifeq ($(CONFIG_ARCH_ROCKCHIP)_$(CONFIG_SPL_FRAMEWORK),y_) 1014INPUTS-y += u-boot.img 1015endif 1016 1017INPUTS-$(CONFIG_X86) += u-boot-x86-start16.bin u-boot-x86-reset16.bin \ 1018 $(if $(CONFIG_SPL_X86_16BIT_INIT),spl/u-boot-spl.bin) \ 1019 $(if $(CONFIG_TPL_X86_16BIT_INIT),tpl/u-boot-tpl.bin) 1020 1021LDFLAGS_u-boot += $(LDFLAGS_FINAL) 1022 1023# Avoid 'Not enough room for program headers' error on binutils 2.28 onwards. 1024LDFLAGS_u-boot += $(call ld-option, --no-dynamic-linker) 1025 1026# ld.lld support 1027LDFLAGS_u-boot += -z notext $(call ld-option,--apply-dynamic-relocs) 1028 1029LDFLAGS_u-boot += --build-id=none 1030 1031ifeq ($(CONFIG_ARC)$(CONFIG_NIOS2)$(CONFIG_X86)$(CONFIG_XTENSA),) 1032LDFLAGS_u-boot += -Ttext $(CONFIG_TEXT_BASE) 1033endif 1034 1035# insure the checker run with the right endianness 1036CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian) 1037 1038# the checker needs the correct machine size 1039CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 1040 1041# Normally we fill empty space with 0xff 1042quiet_cmd_objcopy = OBJCOPY $@ 1043cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \ 1044 $(OBJCOPYFLAGS_$(@F)) $< $@ 1045 1046# Provide a version which does not do this, for use by EFI 1047quiet_cmd_zobjcopy = OBJCOPY $@ 1048cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ 1049 1050quiet_cmd_efipayload = OBJCOPY $@ 1051cmd_efipayload = $(OBJCOPY) -I binary -O $(EFIPAYLOAD_BFDTARGET) -B $(EFIPAYLOAD_BFDARCH) $< $@ 1052 1053MKIMAGEOUTPUT ?= /dev/null 1054 1055quiet_cmd_mkimage = MKIMAGE $@ 1056cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \ 1057 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT)) 1058 1059quiet_cmd_mkfitimage = MKIMAGE $@ 1060cmd_mkfitimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) \ 1061 -f $(U_BOOT_ITS) -p $(CONFIG_FIT_EXTERNAL_OFFSET) $@ \ 1062 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT)) 1063 1064quiet_cmd_cat = CAT $@ 1065cmd_cat = cat $(filter-out $(PHONY), $^) > $@ 1066 1067append = cat $(filter-out $< $(PHONY), $^) >> $@ 1068 1069quiet_cmd_pad_cat = CAT $@ 1070cmd_pad_cat = $(cmd_objcopy) && $(append) || { rm -f $@; false; } 1071 1072quiet_cmd_lzma = LZMA $@ 1073cmd_lzma = lzma -c -z -k -9 $< > $@ 1074 1075cfg: u-boot.cfg 1076 1077quiet_cmd_ofcheck = OFCHK $2 1078cmd_ofcheck = $(srctree)/scripts/check-of.sh $2 \ 1079 $(srctree)/scripts/of_allowlist.txt 1080 1081# Concat the value of all the CONFIGs (result is 'y' or 'yy', etc. ) 1082got = $(foreach cfg,$(1),$($(cfg))) 1083 1084# expected value 'y for each one 1085expect = $(foreach cfg,$(1),y) 1086 1087# Show a deprecation message 1088# Args: 1089# 1: List of options to migrate to (e.g. "CONFIG_DM_MMC CONFIG_BLK") 1090# 2: Name of component (e.g . "Ethernet drivers") 1091# 3: Release deadline (e.g. "v202.07") 1092# 4: Condition to require before checking (e.g. "$(CONFIG_NET)") 1093# Note: Script avoids bash construct, hence the strange double 'if' 1094# (patches welcome!) 1095define deprecated 1096 @if [ -n "$(strip $(4))" ]; then if [ "$(got)" != "$(expect)" ]; then \ 1097 echo >&2 "===================== WARNING ======================"; \ 1098 echo >&2 "This board does not use $(firstword $(1)) (Driver Model"; \ 1099 echo >&2 "for $(2)). Please update the board to use"; \ 1100 echo >&2 "$(firstword $(1)) before the $(3) release. Failure to"; \ 1101 echo >&2 "update by the deadline may result in board removal."; \ 1102 echo >&2 "See doc/develop/driver-model/migration.rst for more info."; \ 1103 echo >&2 "===================================================="; \ 1104 fi; fi 1105 1106endef 1107 1108# Timestamp file to make sure that binman always runs 1109.binman_stamp: $(INPUTS-y) FORCE 1110ifeq ($(CONFIG_BINMAN),y) 1111 $(call if_changed,binman) 1112endif 1113 @touch $@ 1114 1115all: .binman_stamp 1116 1117ifeq ($(CONFIG_DEPRECATED),y) 1118 $(warning "You have deprecated configuration options enabled in your .config! Please check your configuration.") 1119endif 1120ifeq ($(CONFIG_OF_EMBED)$(CONFIG_EFI_APP),y) 1121 @echo >&2 "===================== WARNING ======================" 1122 @echo >&2 "CONFIG_OF_EMBED is enabled. This option should only" 1123 @echo >&2 "be used for debugging purposes. Please use" 1124 @echo >&2 "CONFIG_OF_SEPARATE for boards in mainline." 1125 @echo >&2 "See doc/develop/devicetree/control.rst for more info." 1126 @echo >&2 "====================================================" 1127endif 1128ifneq ($(CONFIG_SPL_FIT_GENERATOR),) 1129 @echo >&2 "===================== WARNING ======================" 1130 @echo >&2 "This board uses CONFIG_SPL_FIT_GENERATOR. Please migrate" 1131 @echo >&2 "to binman instead, to avoid the proliferation of" 1132 @echo >&2 "arch-specific scripts with no tests." 1133 @echo >&2 "====================================================" 1134endif 1135 $(call deprecated,CONFIG_WDT,DM watchdog,v2019.10,\ 1136 $(CONFIG_WATCHDOG)$(CONFIG_HW_WATCHDOG)) 1137 $(call deprecated,CONFIG_DM_I2C,I2C drivers,v2022.04,$(CONFIG_SYS_I2C_LEGACY)) 1138 @# CFG_SYS_TIMER_RATE has brackets in it for some boards which 1139 @# confuses this rule. Use if() to send just a single character which 1140 @# is enable to tell 'deprecated' that one of these symbols exists 1141 $(call deprecated,CONFIG_TIMER,Timer drivers,v2023.01,$(if $(strip $(CFG_SYS_TIMER_RATE)$(CFG_SYS_TIMER_COUNTER)),x)) 1142 $(call deprecated,CONFIG_DM_SERIAL,Serial drivers,v2023.04,$(CONFIG_SERIAL)) 1143 $(call deprecated,CONFIG_DM_SCSI,SCSI drivers,v2023.04,$(CONFIG_SCSI)) 1144 @# Check that this build does not override OF_HAS_PRIOR_STAGE by 1145 @# disabling OF_BOARD. 1146 $(call cmd,ofcheck,$(KCONFIG_CONFIG)) 1147 1148PHONY += dtbs 1149dtbs: dts/dt.dtb 1150 @: 1151dts/dt.dtb: u-boot 1152 $(Q)$(MAKE) $(build)=dts dtbs 1153 1154quiet_cmd_copy = COPY $@ 1155 cmd_copy = cp $< $@ 1156 1157ifeq ($(CONFIG_MULTI_DTB_FIT),y) 1158 1159ifeq ($(CONFIG_MULTI_DTB_FIT_LZO),y) 1160FINAL_DTB_CONTAINER = fit-dtb.blob.lzo 1161else ifeq ($(CONFIG_MULTI_DTB_FIT_GZIP),y) 1162FINAL_DTB_CONTAINER = fit-dtb.blob.gz 1163else 1164FINAL_DTB_CONTAINER = fit-dtb.blob 1165endif 1166 1167fit-dtb.blob.gz: fit-dtb.blob 1168 @gzip -kf9 $< > $@ 1169 1170fit-dtb.blob.lzo: fit-dtb.blob 1171 @lzop -f9 $< > $@ 1172 1173fit-dtb.blob: dts/dt.dtb FORCE 1174 $(call if_changed,mkimage) 1175ifneq ($(SOURCE_DATE_EPOCH),) 1176 touch -d @$(SOURCE_DATE_EPOCH) fit-dtb.blob 1177 chmod 0600 fit-dtb.blob 1178endif 1179 1180MKIMAGEFLAGS_fit-dtb.blob = -f auto -A $(ARCH) -T firmware -C none -O u-boot \ 1181 -a 0 -e 0 -E \ 1182 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) -d /dev/null 1183 1184MKIMAGEFLAGS_fit-dtb.blob += -B 0x8 1185 1186ifneq ($(EXT_DTB),) 1187u-boot-fit-dtb.bin: u-boot-nodtb.bin $(EXT_DTB) 1188 $(call if_changed,cat) 1189else 1190u-boot-fit-dtb.bin: u-boot-nodtb.bin $(FINAL_DTB_CONTAINER) 1191 $(call if_changed,cat) 1192endif 1193 1194u-boot.bin: u-boot-fit-dtb.bin FORCE 1195 $(call if_changed,copy) 1196 1197ifneq ($(CONFIG_MPC85XX_HAVE_RESET_VECTOR)$(CONFIG_OF_SEPARATE),yy) 1198u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE 1199 $(call if_changed,cat) 1200endif 1201 1202else ifeq ($(CONFIG_OF_SEPARATE).$(CONFIG_OF_OMIT_DTB),y.) 1203 1204ifneq ($(CONFIG_MPC85XX_HAVE_RESET_VECTOR)$(CONFIG_OF_SEPARATE),yy) 1205u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE 1206 $(call if_changed,cat) 1207endif 1208 1209u-boot.bin: u-boot-dtb.bin FORCE 1210 $(call if_changed,copy) 1211 1212else 1213u-boot.bin: u-boot-nodtb.bin FORCE 1214 $(call if_changed,copy) 1215endif 1216 1217# we call Makefile in arch/arm/mach-imx which 1218# has targets which are dependent on targets defined 1219# here. make could not resolve them and we must ensure 1220# that they are finished before calling imx targets 1221ifeq ($(CONFIG_MULTI_DTB_FIT),y) 1222IMX_DEPS = u-boot-fit-dtb.bin 1223endif 1224 1225%.imx: $(IMX_DEPS) %.bin 1226 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 1227 $(BOARD_SIZE_CHECK) 1228 1229%.vyb: %.imx 1230 $(Q)$(MAKE) $(build)=arch/arm/cpu/armv7/vf610 $@ 1231 1232quiet_cmd_copy = COPY $@ 1233 cmd_copy = cp $< $@ 1234 1235u-boot.dtb: dts/dt.dtb 1236 $(call cmd,copy) 1237 1238OBJCOPYFLAGS_u-boot.hex := -O ihex 1239 1240OBJCOPYFLAGS_u-boot.srec := -O srec 1241 1242u-boot.hex u-boot.srec: u-boot FORCE 1243 $(call if_changed,objcopy) 1244 1245OBJCOPYFLAGS_u-boot-elf.srec := $(OBJCOPYFLAGS_u-boot.srec) 1246 1247u-boot-elf.srec: u-boot.elf FORCE 1248 $(call if_changed,objcopy) 1249 1250OBJCOPYFLAGS_u-boot-spl.srec = $(OBJCOPYFLAGS_u-boot.srec) 1251 1252spl/u-boot-spl.srec: spl/u-boot-spl FORCE 1253 $(call if_changed,objcopy) 1254 1255%.scif: %.srec 1256 $(Q)$(MAKE) $(build)=arch/arm/mach-rmobile $@ 1257 1258OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \ 1259 $(if $(CONFIG_X86_16BIT_INIT),-R .start16 -R .resetvec) \ 1260 $(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR),$(if $(CONFIG_OF_SEPARATE),-R .bootpg -R .resetvec)) 1261 1262binary_size_check: u-boot-nodtb.bin FORCE 1263 @file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \ 1264 map_size=$(shell cat u-boot.map | \ 1265 awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \ 1266 | sed 's/0X//g' \ 1267 | bc); \ 1268 if [ "" != "$$map_size" ]; then \ 1269 if test $$map_size -ne $$file_size; then \ 1270 echo "u-boot.map shows a binary size of $$map_size" >&2 ; \ 1271 echo " but u-boot-nodtb.bin shows $$file_size" >&2 ; \ 1272 exit 1; \ 1273 fi; \ 1274 fi 1275 1276ifeq ($(CONFIG_INIT_SP_RELATIVE)$(CONFIG_OF_SEPARATE),yy) 1277ifneq ($(CONFIG_SYS_MALLOC_F_LEN),) 1278subtract_sys_malloc_f_len = space=$$(($${space} - $(CONFIG_SYS_MALLOC_F_LEN))) 1279else 1280subtract_sys_malloc_f_len = true 1281endif 1282# The 1/4 margin below is somewhat arbitrary. The likely initial SP usage is 1283# so low that the DTB could probably use 90%+ of the available space, for 1284# current values of CONFIG_SYS_INIT_SP_BSS_OFFSET at least. However, let's be 1285# safe for now and tweak this later if space becomes tight. 1286# A rejected alternative would be to check that some absolute minimum stack 1287# space was available. However, since CONFIG_SYS_INIT_SP_BSS_OFFSET is 1288# deliberately build-specific, to take account of build-to-build stack usage 1289# differences due to different feature sets, there is no common absolute value 1290# to check against. 1291init_sp_bss_offset_check: u-boot.dtb FORCE 1292 @dtb_size=$(shell wc -c u-boot.dtb | awk '{print $$1}') ; \ 1293 space=$(CONFIG_SYS_INIT_SP_BSS_OFFSET) ; \ 1294 $(subtract_sys_malloc_f_len) ; \ 1295 quarter_space=$$(($${space} / 4)) ; \ 1296 if [ $${dtb_size} -gt $${quarter_space} ]; then \ 1297 echo "u-boot.dtb is larger than 1 quarter of " >&2 ; \ 1298 echo "(CONFIG_SYS_INIT_SP_BSS_OFFSET - CONFIG_SYS_MALLOC_F_LEN)" >&2 ; \ 1299 exit 1 ; \ 1300 fi 1301endif 1302 1303shell_cmd = { $(call echo-cmd,$(1)) $(cmd_$(1)); } 1304 1305quiet_cmd_objcopy_uboot = OBJCOPY $@ 1306ifdef cmd_static_rela 1307cmd_objcopy_uboot = $(cmd_objcopy) && $(call shell_cmd,static_rela,$<,$@,$(CONFIG_TEXT_BASE)) || { rm -f $@; false; } 1308else 1309cmd_objcopy_uboot = $(cmd_objcopy) 1310endif 1311 1312u-boot-nodtb.bin: u-boot FORCE 1313 $(call if_changed,objcopy_uboot) 1314 $(BOARD_SIZE_CHECK) 1315 1316u-boot.ldr: u-boot 1317 $(CREATE_LDR_ENV) 1318 $(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS) 1319 $(BOARD_SIZE_CHECK) 1320 1321# binman 1322# --------------------------------------------------------------------------- 1323# Use 'make BINMAN_DEBUG=1' to enable debugging 1324# Use 'make BINMAN_VERBOSE=3' to set vebosity level 1325default_dt := $(if $(DEVICE_TREE),$(DEVICE_TREE),$(CONFIG_DEFAULT_DEVICE_TREE)) 1326 1327quiet_cmd_binman = BINMAN $@ 1328cmd_binman = $(srctree)/tools/binman/binman $(if $(BINMAN_DEBUG),-D) \ 1329 $(foreach f,$(BINMAN_TOOLPATHS),--toolpath $(f)) \ 1330 --toolpath $(objtree)/tools \ 1331 $(if $(BINMAN_VERBOSE),-v$(BINMAN_VERBOSE)) \ 1332 build -u -d u-boot.dtb -O . -m \ 1333 $(if $(BINMAN_ALLOW_MISSING),--allow-missing --ignore-missing) \ 1334 -I . -I $(srctree) -I $(srctree)/board/$(BOARDDIR) \ 1335 -I arch/$(ARCH)/dts -a of-list=$(CONFIG_OF_LIST) \ 1336 $(foreach f,$(BINMAN_INDIRS),-I $(f)) \ 1337 -a atf-bl31-path=${BL31} \ 1338 -a tee-os-path=${TEE} \ 1339 -a opensbi-path=${OPENSBI} \ 1340 -a default-dt=$(default_dt) \ 1341 -a scp-path=$(SCP) \ 1342 -a rockchip-tpl-path=$(ROCKCHIP_TPL) \ 1343 -a spl-bss-pad=$(if $(CONFIG_SPL_SEPARATE_BSS),,1) \ 1344 -a tpl-bss-pad=$(if $(CONFIG_TPL_SEPARATE_BSS),,1) \ 1345 -a spl-dtb=$(CONFIG_SPL_OF_REAL) \ 1346 -a tpl-dtb=$(CONFIG_TPL_OF_REAL) \ 1347 -a pre-load-key-path=${PRE_LOAD_KEY_PATH} \ 1348 $(BINMAN_$(@F)) 1349 1350OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex 1351 1352OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec 1353 1354u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE 1355 $(call if_changed,objcopy) 1356 1357# 1358# U-Boot entry point, needed for booting of full-blown U-Boot 1359# from the SPL U-Boot version. 1360# 1361ifndef CFG_SYS_UBOOT_START 1362CFG_SYS_UBOOT_START := $(CONFIG_TEXT_BASE) 1363endif 1364 1365# Boards with more complex image requirements can provide an .its source file 1366# or a generator script 1367# NOTE: Please do not use this. We are migrating away from Makefile rules to use 1368# binman instead. 1369ifneq ($(CONFIG_SPL_FIT_SOURCE),"") 1370U_BOOT_ITS := u-boot.its 1371$(U_BOOT_ITS): $(subst ",,$(CONFIG_SPL_FIT_SOURCE)) 1372 $(call if_changed,copy) 1373else 1374ifneq ($(CONFIG_USE_SPL_FIT_GENERATOR),) 1375U_BOOT_ITS := u-boot.its 1376$(U_BOOT_ITS): $(U_BOOT_ITS_DEPS) FORCE 1377 $(srctree)/$(CONFIG_SPL_FIT_GENERATOR) \ 1378 $(patsubst %,arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) > $@ 1379endif 1380endif 1381 1382ifdef CONFIG_SPL_LOAD_FIT 1383MKIMAGEFLAGS_u-boot.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \ 1384 -a $(CONFIG_TEXT_BASE) -e $(CFG_SYS_UBOOT_START) \ 1385 -p $(CONFIG_FIT_EXTERNAL_OFFSET) \ 1386 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \ 1387 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(DEVICE_TREE))) \ 1388 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) \ 1389 $(patsubst %,-b arch/$(ARCH)/dts/%.dtbo,$(subst ",,$(CONFIG_OF_OVERLAY_LIST))) 1390else 1391MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \ 1392 -a $(CONFIG_TEXT_BASE) -e $(CFG_SYS_UBOOT_START) \ 1393 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" 1394MKIMAGEFLAGS_u-boot-ivt.img = -A $(ARCH) -T firmware_ivt -C none -O u-boot \ 1395 -a $(CONFIG_TEXT_BASE) -e $(CFG_SYS_UBOOT_START) \ 1396 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" 1397u-boot-ivt.img: MKIMAGEOUTPUT = u-boot-ivt.img.log 1398endif 1399 1400MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img) 1401 1402# Some boards have the kwbimage.cfg file written in advance, while some 1403# other boards generate it on the fly during the build in the build tree. 1404# Let's check if the file exists in the build tree first, otherwise we 1405# fall back to use the one in the source tree. 1406KWD_CONFIG_FILE = $(shell \ 1407 if [ -f $(objtree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) ]; then \ 1408 echo -n $(objtree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%); \ 1409 else \ 1410 echo -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%); \ 1411 fi) 1412 1413MKIMAGEFLAGS_u-boot.kwb = -n $(KWD_CONFIG_FILE) \ 1414 -T kwbimage -a $(CONFIG_TEXT_BASE) -e $(CONFIG_TEXT_BASE) 1415 1416MKIMAGEFLAGS_u-boot-with-spl.kwb = -n $(KWD_CONFIG_FILE) \ 1417 -T kwbimage -a $(CONFIG_TEXT_BASE) -e $(CONFIG_TEXT_BASE) \ 1418 $(if $(KEYDIR),-k $(KEYDIR)) 1419 1420MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \ 1421 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -A $(ARCH) -T pblimage 1422 1423UBOOT_BIN := u-boot.bin 1424 1425MKIMAGEFLAGS_u-boot-lzma.img = -A $(ARCH) -T standalone -C lzma -O u-boot \ 1426 -a $(CONFIG_TEXT_BASE) -e $(CFG_SYS_UBOOT_START) \ 1427 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" 1428 1429u-boot.bin.lzma: u-boot.bin FORCE 1430 $(call if_changed,lzma) 1431 1432u-boot-lzma.img: u-boot.bin.lzma FORCE 1433 $(call if_changed,mkimage) 1434 1435u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl u-boot-ivt.img: \ 1436 $(if $(CONFIG_SPL_LOAD_FIT),u-boot-nodtb.bin \ 1437 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SANDBOX),dts/dt.dtb) \ 1438 ,$(UBOOT_BIN)) FORCE 1439 $(call if_changed,mkimage) 1440 $(BOARD_SIZE_CHECK) 1441 1442ifeq ($(CONFIG_SPL_LOAD_FIT_FULL),y) 1443MKIMAGEFLAGS_u-boot.itb = 1444else 1445MKIMAGEFLAGS_u-boot.itb = -E 1446endif 1447MKIMAGEFLAGS_u-boot.itb += -B 0x8 1448 1449ifdef U_BOOT_ITS 1450u-boot.itb: u-boot-nodtb.bin \ 1451 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SANDBOX),dts/dt.dtb) \ 1452 $(if $(CONFIG_MULTI_DTB_FIT),$(FINAL_DTB_CONTAINER)) \ 1453 $(U_BOOT_ITS) FORCE 1454 $(call if_changed,mkfitimage) 1455 $(BOARD_SIZE_CHECK) 1456endif 1457 1458u-boot-with-spl.kwb: u-boot.bin spl/u-boot-spl.bin FORCE 1459 $(call if_changed,mkimage) 1460 $(BOARD_SIZE_CHECK) 1461 1462u-boot.dis: u-boot 1463 $(OBJDUMP) -d $< > $@ 1464 1465ifneq ($(CONFIG_SPL_PAYLOAD),) 1466SPL_PAYLOAD := $(CONFIG_SPL_PAYLOAD:"%"=%) 1467else 1468SPL_PAYLOAD := u-boot.bin 1469endif 1470 1471SPL_IMAGE := $(CONFIG_SPL_IMAGE:"%"=%) 1472 1473OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \ 1474 --pad-to=$(CONFIG_SPL_PAD_TO) 1475u-boot-with-spl.bin: $(SPL_IMAGE) $(SPL_PAYLOAD) FORCE 1476 $(call if_changed,pad_cat) 1477 1478ifeq ($(CONFIG_ARCH_LPC32XX)$(CONFIG_SPL),yy) 1479MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE) 1480 1481lpc32xx-spl.img: spl/u-boot-spl.bin FORCE 1482 $(call if_changed,mkimage) 1483 1484OBJCOPYFLAGS_lpc32xx-boot-0.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) 1485 1486lpc32xx-boot-0.bin: lpc32xx-spl.img FORCE 1487 $(call if_changed,objcopy) 1488 1489OBJCOPYFLAGS_lpc32xx-boot-1.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) 1490 1491lpc32xx-boot-1.bin: lpc32xx-spl.img FORCE 1492 $(call if_changed,objcopy) 1493 1494lpc32xx-full.bin: lpc32xx-boot-0.bin lpc32xx-boot-1.bin u-boot.img FORCE 1495 $(call if_changed,cat) 1496 1497endif 1498 1499OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \ 1500 --pad-to=$(CONFIG_TPL_PAD_TO) 1501tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE 1502 $(call if_changed,pad_cat) 1503 1504SPL: spl/u-boot-spl.bin FORCE 1505 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 1506 1507#ifeq ($(CONFIG_ARCH_IMX8M)$(CONFIG_ARCH_IMX8), y) 1508ifeq ($(CONFIG_SPL_LOAD_IMX_CONTAINER), y) 1509u-boot.cnt: u-boot.bin FORCE 1510 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 1511 1512flash.bin: spl/u-boot-spl.bin u-boot.cnt FORCE 1513 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 1514else 1515ifeq ($(CONFIG_BINMAN),y) 1516flash.bin: spl/u-boot-spl.bin $(INPUTS-y) FORCE 1517 $(call if_changed,binman) 1518else 1519flash.bin: spl/u-boot-spl.bin u-boot.itb FORCE 1520 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 1521endif 1522endif 1523#endif 1524 1525u-boot.uim: u-boot.bin FORCE 1526 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 1527 1528u-boot-nand.imx: u-boot.imx FORCE 1529 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 1530 1531u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL $(if $(CONFIG_OF_SEPARATE),u-boot.img,u-boot.uim) FORCE 1532 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 1533 1534MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_TEXT_BASE) 1535 1536u-boot.ubl: u-boot-with-spl.bin FORCE 1537 $(call if_changed,mkimage) 1538 1539MKIMAGEFLAGS_u-boot-spl.ais = -s -n "/dev/null" \ 1540 -T aisimage -e $(CONFIG_SPL_TEXT_BASE) 1541spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE 1542 $(call if_changed,mkimage) 1543 1544OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) 1545u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE 1546 $(call if_changed,pad_cat) 1547 1548u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin 1549 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb 1550u-boot.sb: u-boot.bin spl/u-boot-spl.bin 1551 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb 1552 1553MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \ 1554 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER 1555spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE 1556 $(call if_changed,mkimage) 1557 1558ifneq ($(CONFIG_ARCH_SOCFPGA),) 1559quiet_cmd_gensplx4 = GENSPLX4 $@ 1560cmd_gensplx4 = $(OBJCOPY) -I binary -O binary --gap-fill=0x0 \ 1561 --pad-to=$(CONFIG_SPL_PAD_TO) \ 1562 spl/u-boot-spl.sfp spl/u-boot-spl.sfp && \ 1563 cat spl/u-boot-spl.sfp spl/u-boot-spl.sfp \ 1564 spl/u-boot-spl.sfp spl/u-boot-spl.sfp > $@ || { rm -f $@; false; } 1565spl/u-boot-splx4.sfp: spl/u-boot-spl.sfp FORCE 1566 $(call if_changed,gensplx4) 1567 1568quiet_cmd_socboot = SOCBOOT $@ 1569cmd_socboot = cat spl/u-boot-splx4.sfp u-boot.img > $@ || { rm -f $@; false; } 1570u-boot-with-spl.sfp: spl/u-boot-splx4.sfp u-boot.img FORCE 1571 $(call if_changed,socboot) 1572 1573quiet_cmd_gensplpadx4 = GENSPLPADX4 $@ 1574cmd_gensplpadx4 = dd if=/dev/zero of=spl/u-boot-spl.pad bs=64 count=1024 ; \ 1575 cat spl/u-boot-spl.sfp spl/u-boot-spl.pad \ 1576 spl/u-boot-spl.sfp spl/u-boot-spl.pad \ 1577 spl/u-boot-spl.sfp spl/u-boot-spl.pad \ 1578 spl/u-boot-spl.sfp spl/u-boot-spl.pad > $@ || \ 1579 { rm -f $@ spl/u-boot-spl.pad; false; } 1580u-boot-spl-padx4.sfp: spl/u-boot-spl.sfp FORCE 1581 $(call if_changed,gensplpadx4) 1582 1583quiet_cmd_socnandboot = SOCNANDBOOT $@ 1584cmd_socnandboot = cat u-boot-spl-padx4.sfp u-boot.img > $@ || { rm -f $@; false; } 1585u-boot-with-nand-spl.sfp: u-boot-spl-padx4.sfp u-boot.img FORCE 1586 $(call if_changed,socnandboot) 1587 1588endif 1589 1590ifeq ($(CONFIG_MPC85XX_HAVE_RESET_VECTOR)$(CONFIG_OF_SEPARATE),yy) 1591u-boot-dtb.bin: u-boot-nodtb.bin u-boot.dtb u-boot-br.bin FORCE 1592 $(call if_changed,binman) 1593 1594OBJCOPYFLAGS_u-boot-br.bin := -O binary -j .bootpg -j .resetvec 1595u-boot-br.bin: u-boot FORCE 1596 $(call if_changed,objcopy) 1597endif 1598 1599quiet_cmd_ldr = LD $@ 1600cmd_ldr = $(LD) $(LDFLAGS_$(@F)) \ 1601 $(filter-out FORCE,$^) -o $@ 1602 1603ifdef CONFIG_X86 1604OBJCOPYFLAGS_u-boot-x86-start16.bin := -O binary -j .start16 1605u-boot-x86-start16.bin: u-boot FORCE 1606 $(call if_changed,objcopy) 1607 1608OBJCOPYFLAGS_u-boot-x86-reset16.bin := -O binary -j .resetvec 1609u-boot-x86-reset16.bin: u-boot FORCE 1610 $(call if_changed,objcopy) 1611 1612endif # CONFIG_X86 1613 1614OBJCOPYFLAGS_u-boot-app.efi := $(OBJCOPYFLAGS_EFI) 1615u-boot-app.efi: u-boot FORCE 1616 $(call if_changed,zobjcopy) 1617 1618u-boot.bin.o: u-boot.bin FORCE 1619 $(call if_changed,efipayload) 1620 1621u-boot-payload.lds: $(LDSCRIPT_EFI) FORCE 1622 $(call if_changed_dep,cpp_lds) 1623 1624# Rule to link the EFI payload which contains a stub and a U-Boot binary 1625quiet_cmd_u-boot_payload ?= LD $@ 1626 cmd_u-boot_payload ?= $(LD) $(LDFLAGS_EFI_PAYLOAD) -o $@ \ 1627 -T u-boot-payload.lds arch/x86/cpu/call32.o \ 1628 lib/efi/efi.o lib/efi/efi_stub.o u-boot.bin.o \ 1629 $(addprefix arch/$(ARCH)/lib/,$(EFISTUB)) 1630 1631u-boot-payload: u-boot.bin.o u-boot-payload.lds FORCE 1632 $(call if_changed,u-boot_payload) 1633 1634OBJCOPYFLAGS_u-boot-payload.efi := $(OBJCOPYFLAGS_EFI) 1635u-boot-payload.efi: u-boot-payload FORCE 1636 $(call if_changed,zobjcopy) 1637 1638u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE 1639 $(call if_changed,cat) 1640 1641#Add a target to create boot binary having SPL binary in PBI format 1642#concatenated with u-boot binary. It is need by PowerPC SoC having 1643#internal SRAM <= 512KB. 1644MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \ 1645 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \ 1646 -A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE) 1647 1648spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE 1649 $(call if_changed,mkimage) 1650 1651ifeq ($(ARCH),arm) 1652UBOOT_BINLOAD := u-boot.img 1653else 1654UBOOT_BINLOAD := u-boot.bin 1655endif 1656 1657OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \ 1658 --gap-fill=0xff 1659 1660u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE 1661 $(call if_changed,pad_cat) 1662 1663quiet_cmd_u-boot-elf ?= LD $@ 1664 cmd_u-boot-elf ?= $(LD) u-boot-elf.o -o $@ \ 1665 $(if $(CONFIG_SYS_BIG_ENDIAN),-EB,-EL) \ 1666 -T u-boot-elf.lds --defsym=$(CONFIG_PLATFORM_ELFENTRY)=$(CONFIG_TEXT_BASE) \ 1667 -Ttext=$(CONFIG_TEXT_BASE) 1668u-boot.elf: u-boot.bin u-boot-elf.lds 1669 $(Q)$(OBJCOPY) -I binary $(PLATFORM_ELFFLAGS) $< u-boot-elf.o 1670 $(call if_changed,u-boot-elf) 1671 1672u-boot-elf.lds: arch/u-boot-elf.lds prepare FORCE 1673 $(call if_changed_dep,cpp_lds) 1674 1675# MediaTek's ARM-based u-boot needs a header to contains its load address 1676# which is parsed by the BootROM. 1677# If the SPL build is enabled, the header will be added to the spl binary, 1678# and the spl binary and the u-boot.img will be combined into one file. 1679# Otherwise the header will be added to the u-boot.bin directly. 1680 1681ifeq ($(CONFIG_SPL),y) 1682spl/u-boot-spl-mtk.bin: spl/u-boot-spl 1683 1684u-boot-mtk.bin: u-boot-with-spl.bin 1685 $(call if_changed,copy) 1686else 1687MKIMAGEFLAGS_u-boot-mtk.bin = -T mtk_image \ 1688 -a $(CONFIG_TEXT_BASE) -e $(CONFIG_TEXT_BASE) \ 1689 -n "$(patsubst "%",%,$(CONFIG_MTK_BROM_HEADER_INFO))" 1690 1691u-boot-mtk.bin: u-boot.bin FORCE 1692 $(call if_changed,mkimage) 1693endif 1694 1695quiet_cmd_endian_swap = SWAP $@ 1696 cmd_endian_swap = $(srctree)/tools/endian-swap.py $< $@ 1697 1698u-boot-swap.bin: u-boot.bin FORCE 1699 $(call if_changed,endian_swap) 1700 1701ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(ARCH)/Makefile.postlink) 1702 1703# Generate linker list symbols references to force compiler to not optimize 1704# them away when compiling with LTO 1705ifeq ($(LTO_ENABLE),y) 1706u-boot-keep-syms-lto := keep-syms-lto.o 1707u-boot-keep-syms-lto_c := $(patsubst %.o,%.c,$(u-boot-keep-syms-lto)) 1708 1709quiet_cmd_keep_syms_lto = KSL $@ 1710 cmd_keep_syms_lto = \ 1711 $(srctree)/scripts/gen_ll_addressable_symbols.sh $(NM) $^ > $@ 1712 1713quiet_cmd_keep_syms_lto_cc = KSLCC $@ 1714 cmd_keep_syms_lto_cc = \ 1715 $(CC) $(filter-out $(LTO_CFLAGS),$(c_flags)) -c -o $@ $< 1716 1717$(u-boot-keep-syms-lto_c): $(u-boot-main) 1718 $(call if_changed,keep_syms_lto) 1719$(u-boot-keep-syms-lto): $(u-boot-keep-syms-lto_c) 1720 $(call if_changed,keep_syms_lto_cc) 1721else 1722u-boot-keep-syms-lto := 1723endif 1724 1725# Rule to link u-boot 1726# May be overridden by arch/$(ARCH)/config.mk 1727ifeq ($(LTO_ENABLE),y) 1728quiet_cmd_u-boot__ ?= LTO $@ 1729 cmd_u-boot__ ?= \ 1730 $(CC) -nostdlib -nostartfiles \ 1731 $(LTO_FINAL_LDFLAGS) $(c_flags) \ 1732 $(KBUILD_LDFLAGS:%=-Wl,%) $(LDFLAGS_u-boot:%=-Wl,%) -o $@ \ 1733 -T u-boot.lds $(u-boot-init) \ 1734 -Wl,--whole-archive \ 1735 $(u-boot-main) \ 1736 $(u-boot-keep-syms-lto) \ 1737 $(PLATFORM_LIBS) \ 1738 -Wl,--no-whole-archive \ 1739 -Wl,-Map,u-boot.map; \ 1740 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) 1741else 1742quiet_cmd_u-boot__ ?= LD $@ 1743 cmd_u-boot__ ?= $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_u-boot) -o $@ \ 1744 -T u-boot.lds $(u-boot-init) \ 1745 --whole-archive \ 1746 $(u-boot-main) \ 1747 --no-whole-archive \ 1748 $(PLATFORM_LIBS) -Map u-boot.map; \ 1749 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) 1750endif 1751 1752quiet_cmd_smap = GEN common/system_map.o 1753cmd_smap = \ 1754 smap=`$(call SYSTEM_MAP,u-boot) | \ 1755 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \ 1756 $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \ 1757 -c $(srctree)/common/system_map.c -o common/system_map.o 1758 1759u-boot: $(u-boot-init) $(u-boot-main) $(u-boot-keep-syms-lto) u-boot.lds FORCE 1760 +$(call if_changed,u-boot__) 1761ifeq ($(CONFIG_KALLSYMS),y) 1762 $(call cmd,smap) 1763 $(call cmd,u-boot__) common/system_map.o 1764endif 1765 1766ifeq ($(CONFIG_RISCV),y) 1767 @tools/prelink-riscv $@ 1768endif 1769 1770quiet_cmd_sym ?= SYM $@ 1771 cmd_sym ?= $(OBJDUMP) -t $< > $@ 1772u-boot.sym: u-boot FORCE 1773 $(call if_changed,sym) 1774 1775# Environment processing 1776# --------------------------------------------------------------------------- 1777 1778# Directory where we expect the .env file, if it exists 1779ENV_DIR := $(srctree)/board/$(BOARDDIR) 1780 1781# Basename of .env file, stripping quotes 1782ENV_SOURCE_FILE := $(CONFIG_ENV_SOURCE_FILE:"%"=%) 1783 1784# Filename of .env file 1785ENV_FILE_CFG := $(ENV_DIR)/$(ENV_SOURCE_FILE).env 1786 1787# Default filename, if CONFIG_ENV_SOURCE_FILE is empty 1788ENV_FILE_BOARD := $(ENV_DIR)/$(CONFIG_SYS_BOARD:"%"=%).env 1789 1790# Select between the CONFIG_ENV_SOURCE_FILE and the default one 1791ENV_FILE := $(if $(ENV_SOURCE_FILE),$(ENV_FILE_CFG),$(wildcard $(ENV_FILE_BOARD))) 1792 1793# Run the environment text file through the preprocessor, but only if it is 1794# non-empty, to save time and possible build errors if something is wonky with 1795# the board. 1796# If there is no ENV_FILE, produce an empty output file, to prevent a previous 1797# build's file being used in the case of in-tree builds. 1798quiet_cmd_gen_envp = ENVP $@ 1799 cmd_gen_envp = \ 1800 if [ -s "$(ENV_FILE)" ]; then \ 1801 $(CPP) -P $(CFLAGS) -x assembler-with-cpp -D__ASSEMBLY__ \ 1802 -D__UBOOT_CONFIG__ \ 1803 -I . -I include -I $(srctree)/include \ 1804 -include linux/kconfig.h -include include/config.h \ 1805 -I$(srctree)/arch/$(ARCH)/include \ 1806 $< -o $@; \ 1807 else \ 1808 rm -f $@; \ 1809 touch $@ ; \ 1810 fi 1811include/generated/env.in: include/generated/env.txt FORCE 1812 $(call cmd,gen_envp) 1813 1814# Regenerate the environment if it changes 1815# We use 'wildcard' since the file is not required to exist (at present), in 1816# which case we don't want this dependency, but instead should create an empty 1817# file 1818# This rule is useful since it shows the source file for the environment 1819quiet_cmd_envc = ENVC $@ 1820 cmd_envc = \ 1821 if [ -f "$<" ]; then \ 1822 cat $< > $@; \ 1823 elif [ -n "$(ENV_SOURCE_FILE)" ]; then \ 1824 echo "Missing file $(ENV_FILE_CFG)"; \ 1825 else \ 1826 touch $@ ; \ 1827 fi 1828 1829include/generated/env.txt: $(wildcard $(ENV_FILE)) FORCE 1830 $(call cmd,envc) 1831 1832# Write out the resulting environment, converted to a C string 1833quiet_cmd_gen_envt = ENVT $@ 1834 cmd_gen_envt = \ 1835 awk -f $(srctree)/scripts/env2string.awk $< >$@ 1836$(env_h): include/generated/env.in 1837 $(call cmd,gen_envt) 1838 1839# --------------------------------------------------------------------------- 1840 1841# The actual objects are generated when descending, 1842# make sure no implicit rule kicks in 1843$(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ; 1844 1845# Handle descending into subdirectories listed in $(u-boot-dirs) 1846# Preset locale variables to speed up the build process. Limit locale 1847# tweaks to this spot to avoid wrong language settings when running 1848# make menuconfig etc. 1849# Error messages still appears in the original language 1850 1851PHONY += $(u-boot-dirs) 1852$(u-boot-dirs): prepare scripts 1853 $(Q)$(MAKE) $(build)=$@ 1854 1855tools: prepare 1856# The "tools" are needed early 1857$(filter-out tools, $(u-boot-dirs)): tools 1858# The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC 1859# is "yes"), so compile examples after U-Boot is compiled. 1860examples: $(filter-out examples, $(u-boot-dirs)) 1861 1862define filechk_uboot.release 1863 echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1864endef 1865 1866# Store (new) UBOOTRELEASE string in include/config/uboot.release 1867include/config/uboot.release: include/config/auto.conf FORCE 1868 $(call filechk,uboot.release) 1869 1870 1871# Things we need to do before we recursively start building the kernel 1872# or the modules are listed in "prepare". 1873# A multi level approach is used. prepareN is processed before prepareN-1. 1874# archprepare is used in arch Makefiles and when processed asm symlink, 1875# version.h and scripts_basic is processed / created. 1876 1877# Listed in dependency order 1878PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 1879 1880# prepare3 is used to check if we are building in a separate output directory, 1881# and if so do: 1882# 1) Check that make has not been executed in the kernel src $(srctree) 1883prepare3: include/config/uboot.release 1884ifneq ($(KBUILD_SRC),) 1885 @$(kecho) ' Using $(srctree) as source for U-Boot' 1886 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ 1887 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ 1888 echo >&2 " in the '$(srctree)' directory.";\ 1889 /bin/false; \ 1890 fi; 1891endif 1892 1893# prepare2 creates a makefile if using a separate output directory 1894prepare2: prepare3 outputmakefile cfg 1895 1896prepare1: prepare2 $(version_h) $(timestamp_h) $(dt_h) $(env_h) \ 1897 include/config/auto.conf 1898ifeq ($(wildcard $(LDSCRIPT)),) 1899 @echo >&2 " Could not find linker script." 1900 @/bin/false 1901endif 1902 1903ifeq ($(CONFIG_USE_DEFAULT_ENV_FILE),y) 1904prepare1: $(defaultenv_h) 1905 1906envtools: $(defaultenv_h) 1907endif 1908 1909archprepare: prepare1 scripts_basic 1910 1911prepare0: archprepare FORCE 1912 $(Q)$(MAKE) $(build)=. 1913 1914# All the preparing.. 1915prepare: prepare0 1916 1917# Generate some files 1918# --------------------------------------------------------------------------- 1919 1920# Use sed to remove leading zeros from PATCHLEVEL to avoid using octal numbers 1921define filechk_version.h 1922 (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \ 1923 echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \ 1924 echo \#define U_BOOT_VERSION_NUM $(VERSION); \ 1925 echo \#define U_BOOT_VERSION_NUM_PATCH $$(echo $(PATCHLEVEL) | \ 1926 sed -e "s/^0*//"); \ 1927 echo \#define CC_VERSION_STRING \"$$(LC_ALL=C $(CC) --version | head -n 1)\"; \ 1928 echo \#define LD_VERSION_STRING \"$$(LC_ALL=C $(LD) --version | head -n 1)\"; ) 1929endef 1930 1931# The SOURCE_DATE_EPOCH mechanism requires a date that behaves like GNU date. 1932# The BSD date on the other hand behaves different and would produce errors 1933# with the misused '-d' switch. Respect that and search a working date with 1934# well known pre- and suffixes for the GNU variant of date. 1935define filechk_timestamp.h 1936 (if test -n "$${SOURCE_DATE_EPOCH}"; then \ 1937 SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \ 1938 DATE=""; \ 1939 for date in gdate date.gnu date; do \ 1940 $${date} -u -d "$${SOURCE_DATE}" >/dev/null 2>&1 && DATE="$${date}"; \ 1941 done; \ 1942 if test -n "$${DATE}"; then \ 1943 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DATE "%b %d %C%y"'; \ 1944 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TIME "%T"'; \ 1945 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TZ "%z"'; \ 1946 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_EPOCH %s'; \ 1947 else \ 1948 return 42; \ 1949 fi; \ 1950 else \ 1951 LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \ 1952 LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \ 1953 LC_ALL=C date +'#define U_BOOT_TZ "%z"'; \ 1954 LC_ALL=C date +'#define U_BOOT_EPOCH %s'; \ 1955 fi) 1956endef 1957 1958define filechk_defaultenv.h 1959 ( { grep -v '^#' | grep -v '^$$' || true ; echo '' ; } | \ 1960 tr '\n' '\0' | \ 1961 sed -e 's/\\\x0\s*//g' | \ 1962 xxd -i ; ) 1963endef 1964 1965define filechk_dt.h 1966 (if test -n "$${DEVICE_TREE}"; then \ 1967 echo \#define DEVICE_TREE \"$(DEVICE_TREE)\"; \ 1968 else \ 1969 echo \#define DEVICE_TREE CONFIG_DEFAULT_DEVICE_TREE; \ 1970 fi) 1971endef 1972 1973$(version_h): include/config/uboot.release FORCE 1974 $(call filechk,version.h) 1975 1976$(timestamp_h): $(srctree)/Makefile FORCE 1977 $(call filechk,timestamp.h) 1978 1979$(dt_h): $(srctree)/Makefile FORCE 1980 $(call filechk,dt.h) 1981 1982$(defaultenv_h): $(CONFIG_DEFAULT_ENV_FILE:"%"=%) FORCE 1983 $(call filechk,defaultenv.h) 1984 1985# --------------------------------------------------------------------------- 1986# Devicetree files 1987 1988ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/boot/dts/),) 1989dtstree := arch/$(SRCARCH)/boot/dts 1990endif 1991 1992ifneq ($(dtstree),) 1993 1994%.dtb: prepare3 scripts_dtc 1995 $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ 1996 1997PHONY += dtbs dtbs_install 1998dtbs: prepare3 scripts_dtc 1999 $(Q)$(MAKE) $(build)=$(dtstree) 2000
2001dtbs_install: 2002 $(Q)$(MAKE) $(dtbinst)=$(dtstree) 2003 2004endif 2005 2006# Check dtc and pylibfdt, if DTC is provided, else build them 2007PHONY += scripts_dtc 2008scripts_dtc: scripts_basic 2009 $(Q)if test "$(DTC)" = "$(DTC_INTREE)"; then \ 2010 $(MAKE) $(build)=scripts/dtc; \ 2011 else \ 2012 if ! $(DTC) -v >/dev/null; then \ 2013 echo '*** Failed to check dtc version: $(DTC)'; \ 2014 false; \ 2015 else \ 2016 if test "$(call dtc-version)" -lt $(DTC_MIN_VERSION); then \ 2017 echo '*** Your dtc is too old, please upgrade to dtc $(DTC_MIN_VERSION) or newer'; \ 2018 false; \ 2019 else \ 2020 if [ -n "$(CONFIG_PYLIBFDT)" ]; then \ 2021 if ! echo "import libfdt" | $(PYTHON3) 2>/dev/null; then \ 2022 echo '*** pylibfdt does not seem to be available with $(PYTHON3)'; \ 2023 false; \ 2024 fi; \ 2025 fi; \ 2026 fi; \ 2027 fi; \ 2028 fi 2029 2030# --------------------------------------------------------------------------- 2031quiet_cmd_cpp_lds = LDS $@ 2032cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) \ 2033 -D__ASSEMBLY__ -x assembler-with-cpp -std=c99 -P -o $@ $< 2034 2035u-boot.lds: $(LDSCRIPT) prepare FORCE 2036 $(call if_changed_dep,cpp_lds) 2037 2038spl/u-boot-spl.bin: spl/u-boot-spl 2039 @: 2040 $(SPL_SIZE_CHECK) 2041 2042spl/u-boot-spl-dtb.bin: spl/u-boot-spl 2043 @: 2044 2045spl/u-boot-spl-dtb.hex: spl/u-boot-spl 2046 @: 2047 2048spl/u-boot-spl: tools prepare $(if $(CONFIG_SPL_OF_CONTROL),dts/dt.dtb) 2049 $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all 2050 2051spl/sunxi-spl.bin: spl/u-boot-spl 2052 @: 2053 2054spl/sunxi-spl-with-ecc.bin: spl/sunxi-spl.bin 2055 @: 2056 2057spl/u-boot-spl.sfp: spl/u-boot-spl 2058 @: 2059 2060spl/boot.bin: spl/u-boot-spl 2061 @: 2062 2063tpl/u-boot-tpl.bin: tpl/u-boot-tpl 2064 @: 2065 $(TPL_SIZE_CHECK) 2066 2067tpl/u-boot-tpl: tools prepare $(if $(CONFIG_TPL_OF_CONTROL),dts/dt.dtb) 2068 $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all 2069 2070vpl/u-boot-vpl.bin: vpl/u-boot-vpl 2071 @: 2072 $(VPL_SIZE_CHECK) 2073 2074vpl/u-boot-vpl: tools prepare $(if $(CONFIG_TPL_OF_CONTROL),dts/dt.dtb) 2075 $(Q)$(MAKE) obj=vpl -f $(srctree)/scripts/Makefile.spl all 2076 2077TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include) 2078 2079FIND := find 2080FINDFLAGS := -L 2081 2082tags ctags: 2083 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \ 2084 -name '*.[chS]' -print` 2085 ln -s ctags tags 2086 2087etags: 2088 etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \ 2089 -name '*.[chS]' -print` 2090cscope: 2091 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \ 2092 cscope.files 2093 @find $(TAG_SUBDIRS) -name '*.[chS]' -type l -print | \ 2094 grep -xvf - cscope.files > cscope.files.no-symlinks; \ 2095 mv cscope.files.no-symlinks cscope.files 2096 cscope -b -q -k 2097 2098SYSTEM_MAP = \ 2099 $(NM) $1 | \ 2100 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \ 2101 LC_ALL=C sort 2102System.map: u-boot 2103 @$(call SYSTEM_MAP,$<) > $@ 2104 2105######################################################################### 2106 2107# ARM relocations should all be R_ARM_RELATIVE (32-bit) or 2108# R_AARCH64_RELATIVE (64-bit). 2109checkarmreloc: u-boot 2110 @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \ 2111 grep R_A | sort -u`"; \ 2112 if test "$$RELOC" != "R_ARM_RELATIVE" -a \ 2113 "$$RELOC" != "R_AARCH64_RELATIVE"; then \ 2114 echo "$< contains unexpected relocations: $$RELOC"; \ 2115 false; \ 2116 fi 2117 2118tools/version.h: include/version.h 2119 $(Q)mkdir -p $(dir $@) 2120 $(call if_changed,copy) 2121 2122envtools: u-boot-initial-env scripts_basic $(version_h) $(timestamp_h) tools/version.h 2123 $(Q)$(MAKE) $(build)=tools/env 2124 2125tools-only: export TOOLS_ONLY=y 2126tools-only: scripts_basic $(version_h) $(timestamp_h) tools/version.h 2127 $(Q)$(MAKE) $(build)=tools 2128 2129tools-all: export HOST_TOOLS_ALL=y 2130tools-all: envtools tools ; 2131 2132cross_tools: export CROSS_BUILD_TOOLS=y 2133cross_tools: tools ; 2134 2135.PHONY : CHANGELOG 2136CHANGELOG: 2137 git log --no-merges U-Boot-1_1_5.. | \ 2138 unexpand -a | sed -e 's/\s\s*$$//' > $@ 2139 2140######################################################################### 2141 2142### 2143# Cleaning is done on three levels. 2144# make clean Delete most generated files 2145# Leave enough to build external modules 2146# make mrproper Delete the current configuration, and all generated files 2147# make distclean Remove editor backup files, patch leftover files and the like 2148 2149# Directories & files removed with 'make clean' 2150CLEAN_DIRS += $(MODVERDIR) \ 2151 $(foreach d, spl tpl, $(patsubst %,$d/%, \ 2152 $(filter-out include, $(shell ls -1 $d 2>/dev/null)))) 2153 2154CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h \ 2155 include/generated/env.* drivers/video/u_boot_logo.S \ 2156 tools/version.h u-boot* MLO* SPL System.map fit-dtb.blob* \ 2157 u-boot-ivt.img.log u-boot-dtb.imx.log SPL.log u-boot.imx.log \ 2158 lpc32xx-* bl31.c bl31.elf bl31_*.bin image.map tispl.bin* \ 2159 idbloader.img flash.bin flash.log defconfig keep-syms-lto.c \ 2160 mkimage-out.spl.mkimage mkimage.spl.mkimage imx-boot.map \ 2161 itb.fit.fit itb.fit.itb itb.map spl.map mkimage-out.rom.mkimage \ 2162 mkimage.rom.mkimage rom.map simple-bin.map simple-bin-spi.map \ 2163 idbloader-spi.img lib/efi_loader/helloworld_efi.S 2164 2165# Directories & files removed with 'make mrproper' 2166MRPROPER_DIRS += include/config include/generated spl tpl \ 2167 .tmp_objdiff doc/output include/asm 2168 2169# Remove include/asm symlink created by U-Boot before v2014.01 2170MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \ 2171 ctags etags tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ 2172 drivers/video/fonts/*.S include/asm 2173 2174# clean - Delete most, but leave enough to build external modules 2175# 2176clean: rm-dirs := $(CLEAN_DIRS) 2177clean: rm-files := $(CLEAN_FILES) 2178 2179clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f)) 2180 2181clean-dirs := $(addprefix _clean_, $(clean-dirs)) 2182 2183PHONY += $(clean-dirs) clean archclean 2184$(clean-dirs): 2185 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 2186 2187clean: $(clean-dirs) 2188 $(call cmd,rmdirs) 2189 $(call cmd,rmfiles) 2190 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 2191 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 2192 -o -name '*.ko.*' -o -name '*.su' -o -name '*.pyc' \ 2193 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 2194 -o -name '*.lex.c' -o -name '*.tab.[ch]' \ 2195 -o -name '*.asn1.[ch]' \ 2196 -o -name '*.symtypes' -o -name 'modules.order' \ 2197 -o -name modules.builtin -o -name '.tmp_*.o.*' \ 2198 -o -name 'dsdt_generated.aml' -o -name 'dsdt_generated.asl.tmp' \ 2199 -o -name 'dsdt_generated.c' \ 2200 -o -name '*.efi' -o -name '*.gcno' -o -name '*.so' \) \ 2201 -type f -print | xargs rm -f 2202 2203# mrproper - Delete all generated files, including .config 2204# 2205mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 2206mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 2207mrproper-dirs := $(addprefix _mrproper_,scripts) 2208 2209PHONY += $(mrproper-dirs) mrproper archmrproper 2210$(mrproper-dirs): 2211 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 2212 2213mrproper: clean $(mrproper-dirs) 2214 $(call cmd,rmdirs) 2215 $(call cmd,rmfiles) 2216 @rm -f arch/*/include/asm/arch 2217 2218# distclean 2219# 2220PHONY += distclean 2221 2222distclean: mrproper 2223 @find $(srctree) $(RCS_FIND_IGNORE) \ 2224 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 2225 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 2226 -o -name '.*.rej' -o -name '*%' -o -name 'core' \ 2227 -o -name '*.pyc' \) \ 2228 -type f -print | xargs rm -f 2229 @rm -f boards.cfg CHANGELOG 2230 2231# See doc/develop/python_cq.rst 2232PHONY += pylint pylint_err 2233PYLINT_BASE := scripts/pylint.base 2234PYLINT_CUR := pylint.cur 2235PYLINT_DIFF := pylint.diff 2236pylint: 2237 $(Q)echo "Running pylint on all files (summary in $(PYLINT_CUR); output in pylint.out/)" 2238 $(Q)mkdir -p pylint.out 2239 $(Q)rm -f pylint.out/out* 2240 $(Q)find tools test -name "*.py" \ 2241 | xargs -n1 -P$(shell nproc 2>/dev/null || echo 1) \ 2242 sh -c 'pylint --reports=y --exit-zero -f parseable --ignore-imports=yes $$@ > pylint.out/$$(echo $$@ | tr / _ | sed s/.py//)' _ 2243 $(Q)rm -f $(PYLINT_CUR) 2244 $(Q)( cd pylint.out; for f in *; do \ 2245 sed -ne "s/Your code has been rated at \([-0-9.]*\).*/$$f \1/p" $$f; \ 2246 done ) | sort > $(PYLINT_CUR) 2247 $(Q)base=$$(mktemp) cur=$$(mktemp); cut -d' ' -f1 $(PYLINT_BASE) >$$base; \ 2248 cut -d' ' -f1 $(PYLINT_CUR) >$$cur; \ 2249 comm -3 $$base $$cur > $(PYLINT_DIFF); \ 2250 if [ -s $(PYLINT_DIFF) ]; then \ 2251 echo "Files have been added/removed. Try:\n\tcp $(PYLINT_CUR) $(PYLINT_BASE)"; \ 2252 echo; \ 2253 echo "Added files:"; \ 2254 comm -13 $$base $$cur; \ 2255 echo; \ 2256 echo "Removed files:"; \ 2257 comm -23 $$base $$cur; \ 2258 false; \ 2259 else \ 2260 rm $$base $$cur $(PYLINT_DIFF); \ 2261 fi 2262 $(Q)bad=false; while read base_file base_val <&3 && read cur_file cur_val <&4; do \ 2263 if awk "BEGIN {exit !($$cur_val < $$base_val)}"; then \ 2264 echo "$$base_file: Score was $$base_val, now $$cur_val"; \ 2265 bad=true; fi; \ 2266 done 3<$(PYLINT_BASE) 4<$(PYLINT_CUR); \ 2267 if $$bad; then \ 2268 echo "Some files have regressed, please fix"; \ 2269 false; \ 2270 else \ 2271 echo "No pylint regressions"; \ 2272 fi 2273 2274# Check for errors only 2275pylint_err: 2276 $(Q)pylint -E -j 0 --ignore-imports=yes \ 2277 $(shell find tools test -name "*.py") 2278 2279backup: 2280 F=`basename $(srctree)` ; cd .. ; \ 2281 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F 2282 2283PHONY += _pip pip pip_release 2284 2285pip_release: PIP_ARGS="--real" 2286pip_test: PIP_ARGS="" 2287pip: PIP_ARGS="-n" 2288 2289pip pip_test pip_release: _pip 2290 2291_pip: 2292 scripts/make_pip.sh u_boot_pylib ${PIP_ARGS} 2293 scripts/make_pip.sh patman ${PIP_ARGS} 2294 scripts/make_pip.sh buildman ${PIP_ARGS} 2295 scripts/make_pip.sh dtoc ${PIP_ARGS} 2296 scripts/make_pip.sh binman ${PIP_ARGS} 2297 2298help: 2299 @echo 'Cleaning targets:' 2300 @echo ' clean - Remove most generated files but keep the config' 2301 @echo ' mrproper - Remove all generated files + config + various backup files' 2302 @echo ' distclean - mrproper + remove editor backup and patch files' 2303 @echo '' 2304 @echo 'Configuration targets:' 2305 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 2306 @echo '' 2307 @echo 'Test targets:' 2308 @echo '' 2309 @echo ' check - Run all automated tests that use sandbox' 2310 @echo ' pcheck - Run quick automated tests in parallel' 2311 @echo ' qcheck - Run quick automated tests that use sandbox' 2312 @echo ' tcheck - Run quick automated tests on tools' 2313 @echo ' pylint - Run pylint on all Python files' 2314 @echo '' 2315 @echo 'Other generic targets:' 2316 @echo ' all - Build all necessary images depending on configuration' 2317 @echo ' tests - Build U-Boot for sandbox and run tests' 2318 @echo '* u-boot - Build the bare u-boot' 2319 @echo ' dir/ - Build all files in dir and below' 2320 @echo ' dir/file.[oisS] - Build specified target only' 2321 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 2322 @echo ' (requires a recent binutils and recent build (System.map))' 2323 @echo ' tags/ctags - Generate ctags file for editors' 2324 @echo ' etags - Generate etags file for editors' 2325 @echo ' cscope - Generate cscope index' 2326 @echo ' ubootrelease - Output the release version string (use with make -s)' 2327 @echo ' ubootversion - Output the version stored in Makefile (use with make -s)' 2328 @echo " cfg - Don't build, just create the .cfg files" 2329 @echo " envtools - Build only the target-side environment tools" 2330 @echo '' 2331 @echo 'PyPi / pip targets:' 2332 @echo ' pip - Check building of PyPi packages' 2333 @echo ' pip_test - Build PyPi pakages and upload to test server' 2334 @echo ' pip_release - Build PyPi pakages and upload to release server' 2335 @echo '' 2336 @echo 'Static analysers' 2337 @echo ' checkstack - Generate a list of stack hogs' 2338 @echo ' coccicheck - Execute static code analysis with Coccinelle' 2339 @echo '' 2340 @echo 'Documentation targets:' 2341 @$(MAKE) -f $(srctree)/doc/Makefile dochelp 2342 @echo '' 2343 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 2344 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 2345 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 2346 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 2347 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 2348 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 2349 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' 2350 @echo ' 1: warnings which may be relevant and do not occur too often' 2351 @echo ' 2: warnings which occur quite often but may still be relevant' 2352 @echo ' 3: more obscure warnings, can most likely be ignored' 2353 @echo ' Multiple levels can be combined with W=12 or W=123' 2354 @echo '' 2355 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 2356 @echo 'For further info see the ./README file' 2357 2358tests check: 2359 $(srctree)/test/run 2360 2361pcheck: 2362 $(srctree)/test/run parallel 2363 2364qcheck: 2365 $(srctree)/test/run quick 2366 2367tcheck: 2368 $(srctree)/test/run tools 2369 2370# Documentation targets 2371# --------------------------------------------------------------------------- 2372DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \ 2373 linkcheckdocs dochelp refcheckdocs texinfodocs infodocs 2374PHONY += $(DOC_TARGETS) 2375$(DOC_TARGETS): scripts_basic FORCE 2376 $(Q)$(MAKE) $(build)=doc $@ 2377 2378PHONY += checkstack ubootrelease ubootversion 2379 2380checkstack: 2381 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \ 2382 $(PERL) $(src)/scripts/checkstack.pl $(ARCH) 2383 2384ubootrelease: 2385 @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 2386 2387ubootversion: 2388 @echo $(UBOOTVERSION) 2389 2390# Single targets 2391# --------------------------------------------------------------------------- 2392# Single targets are compatible with: 2393# - build with mixed source and output 2394# - build with separate output dir 'make O=...' 2395# - external modules 2396# 2397# target-dir => where to store outputfile 2398# build-dir => directory in kernel source tree to use 2399 2400ifeq ($(KBUILD_EXTMOD),) 2401 build-dir = $(patsubst %/,%,$(dir $@)) 2402 target-dir = $(dir $@) 2403else 2404 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) 2405 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) 2406 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) 2407endif 2408 2409%.s: %.c prepare scripts FORCE 2410 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 2411%.i: %.c prepare scripts FORCE 2412 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 2413%.o: %.c prepare scripts FORCE 2414 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 2415%.lst: %.c prepare scripts FORCE 2416 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 2417%.s: %.S prepare scripts FORCE 2418 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 2419%.o: %.S prepare scripts FORCE 2420 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 2421%.symtypes: %.c prepare scripts FORCE 2422 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 2423 2424# Modules 2425/: prepare scripts FORCE 2426 $(cmd_crmodverdir) 2427 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 2428 $(build)=$(build-dir) 2429%/: prepare scripts FORCE 2430 $(cmd_crmodverdir) 2431 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 2432 $(build)=$(build-dir) 2433%.ko: prepare scripts FORCE 2434 $(cmd_crmodverdir) 2435 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 2436 $(build)=$(build-dir) $(@:.ko=.o) 2437 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 2438 2439quiet_cmd_genenv = GENENV $@ 2440cmd_genenv = \ 2441 $(objtree)/tools/printinitialenv | \ 2442 sed -e '/^\s*$$/d' | \ 2443 sort --field-separator== -k1,1 --stable -o $@ 2444 2445u-boot-initial-env: $(env_h) FORCE 2446 $(Q)$(MAKE) $(build)=tools $(objtree)/tools/printinitialenv 2447 $(call if_changed,genenv) 2448 2449# Consistency checks 2450# --------------------------------------------------------------------------- 2451 2452PHONY += coccicheck 2453 2454coccicheck: 2455 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ 2456 2457# FIXME Should go into a make.lib or something 2458# =========================================================================== 2459 2460quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 2461 cmd_rmdirs = rm -rf $(rm-dirs) 2462 2463quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 2464 cmd_rmfiles = rm -f $(rm-files) 2465 2466# read all saved command lines 2467 2468cmd_files := $(wildcard .*.cmd) 2469 2470ifneq ($(cmd_files),) 2471 $(cmd_files): ; # Do not try to update included dependency files 2472 include $(cmd_files) 2473endif 2474 2475endif #ifeq ($(config-targets),1) 2476endif #ifeq ($(mixed-targets),1) 2477endif # skip-makefile 2478 2479PHONY += FORCE 2480FORCE: 2481 2482# Declare the contents of the PHONY variable as phony. We keep that 2483# information in a variable so we can use it in if_changed and friends. 2484.PHONY: $(PHONY) 2485