1# SPDX-License-Identifier: GPL-2.0+ 2 3VERSION = 2023 4PATCHLEVEL = 01 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# 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:%-=%)) 440GCC_TOOLCHAIN_DIR := $(dir $(shell which $(LD))) 441CLANG_PREFIX := --prefix=$(GCC_TOOLCHAIN_DIR) 442GCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..) 443endif 444ifneq ($(GCC_TOOLCHAIN),) 445CLANG_GCC_TC := --gcc-toolchain=$(GCC_TOOLCHAIN) 446endif 447KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) $(CLANG_PREFIX) 448KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) $(CLANG_PREFIX) 449KBUILD_CFLAGS += $(call cc-option, -no-integrated-as) 450KBUILD_AFLAGS += $(call cc-option, -no-integrated-as) 451endif 452 453# Don't generate position independent code 454KBUILD_CFLAGS += $(call cc-option,-fno-PIE) 455KBUILD_AFLAGS += $(call cc-option,-fno-PIE) 456 457# Read UBOOTRELEASE from include/config/uboot.release (if it exists) 458UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null) 459UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 460 461export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION 462export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR 463export CONFIG_SHELL HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC 464export CPP AR NM LDR STRIP OBJCOPY OBJDUMP KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS 465export MAKE LEX YACC AWK PERL PYTHON PYTHON2 PYTHON3 466export HOSTCXX KBUILD_HOSTCXXFLAGS CHECK CHECKFLAGS DTC DTC_FLAGS 467 468export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS 469export KBUILD_CFLAGS KBUILD_AFLAGS 470 471export CC_VERSION_TEXT := $(shell $(CC) --version | head -n 1) 472 473# When compiling out-of-tree modules, put MODVERDIR in the module 474# tree rather than in the kernel tree. The kernel tree might 475# even be read-only. 476export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 477 478# Files to ignore in find ... statements 479 480export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 481 -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 482 -prune -o 483export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ 484 --exclude CVS --exclude .pc --exclude .hg --exclude .git 485 486# =========================================================================== 487# Rules shared between *config targets and build targets 488 489# Basic helpers built in scripts/ 490PHONY += scripts_basic 491scripts_basic: 492 $(Q)$(MAKE) $(build)=scripts/basic 493 $(Q)rm -f .tmp_quiet_recordmcount 494 495# To avoid any implicit rule to kick in, define an empty command. 496scripts/basic/%: scripts_basic ; 497 498PHONY += outputmakefile 499# outputmakefile generates a Makefile in the output directory, if using a 500# separate output directory. This allows convenient use of make in the 501# output directory. 502outputmakefile: 503ifneq ($(KBUILD_SRC),) 504 $(Q)ln -fsn $(srctree) source 505 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree) 506endif 507 508# To make sure we do not include .config for any of the *config targets 509# catch them early, and hand them over to scripts/kconfig/Makefile 510# It is allowed to specify more targets when calling make, including 511# mixing *config targets and build targets. 512# For example 'make oldconfig all'. 513# Detect when mixed targets is specified, and make a second invocation 514# of make so .config is not included in this case either (for *config). 515 516version_h := include/generated/version_autogenerated.h 517timestamp_h := include/generated/timestamp_autogenerated.h 518defaultenv_h := include/generated/defaultenv_autogenerated.h 519dt_h := include/generated/dt.h 520env_h := include/generated/environment.h 521 522no-dot-config-targets := clean clobber mrproper distclean \ 523 help %docs check% coccicheck \ 524 ubootversion backup tests check pcheck qcheck tcheck \ 525 pylint pylint_err 526 527config-targets := 0 528mixed-targets := 0 529dot-config := 1 530 531ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 532 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 533 dot-config := 0 534 endif 535endif 536 537ifeq ($(KBUILD_EXTMOD),) 538 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 539 config-targets := 1 540 ifneq ($(words $(MAKECMDGOALS)),1) 541 mixed-targets := 1 542 endif 543 endif 544endif 545 546ifeq ($(mixed-targets),1) 547# =========================================================================== 548# We're called with mixed targets (*config and build targets). 549# Handle them one by one. 550 551PHONY += $(MAKECMDGOALS) __build_one_by_one 552 553$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one 554 @: 555 556__build_one_by_one: 557 $(Q)set -e; \ 558 for i in $(MAKECMDGOALS); do \ 559 $(MAKE) -f $(srctree)/Makefile $$i; \ 560 done 561 562else 563ifeq ($(config-targets),1) 564# =========================================================================== 565# *config targets only - make sure prerequisites are updated, and descend 566# in scripts/kconfig to make the *config target 567 568KBUILD_DEFCONFIG := sandbox_defconfig 569export KBUILD_DEFCONFIG KBUILD_KCONFIG 570 571config: scripts_basic outputmakefile FORCE 572 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 573 574%config: scripts_basic outputmakefile FORCE 575 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 576 577else 578# =========================================================================== 579# Build targets only - this includes vmlinux, arch specific targets, clean 580# targets and others. In general all targets except *config targets. 581 582# Additional helpers built in scripts/ 583# Carefully list dependencies so we do not try to build scripts twice 584# in parallel 585PHONY += scripts 586scripts: scripts_basic scripts_dtc include/config/auto.conf 587 $(Q)$(MAKE) $(build)=$(@) 588 589ifeq ($(dot-config),1) 590# Read in config 591-include include/config/auto.conf 592 593# Read in dependencies to all Kconfig* files, make sure to run 594# oldconfig if changes are detected. 595-include include/config/auto.conf.cmd 596 597# To avoid any implicit rule to kick in, define an empty command 598$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; 599 600# If .config is newer than include/config/auto.conf, someone tinkered 601# with it and forgot to run make oldconfig. 602# if auto.conf.cmd is missing then we are probably in a cleaned tree so 603# we execute the config step to be sure to catch updated Kconfig files 604include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd 605 $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig 606 @# If the following part fails, include/config/auto.conf should be 607 @# deleted so "make silentoldconfig" will be re-run on the next build. 608 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf || \ 609 { rm -f include/config/auto.conf; false; } 610 @# include/config.h has been updated after "make silentoldconfig". 611 @# We need to touch include/config/auto.conf so it gets newer 612 @# than include/config.h. 613 @# Otherwise, 'make silentoldconfig' would be invoked twice. 614 $(Q)touch include/config/auto.conf 615 616u-boot.cfg spl/u-boot.cfg tpl/u-boot.cfg: 617 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf $(@) 618 619-include include/autoconf.mk 620-include include/autoconf.mk.dep 621 622# We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf 623# is up-to-date. When we switch to a different board configuration, old CONFIG 624# macros are still remaining in include/config/auto.conf. Without the following 625# gimmick, wrong config.mk would be included leading nasty warnings/errors. 626ifneq ($(wildcard $(KCONFIG_CONFIG)),) 627ifneq ($(wildcard include/config/auto.conf),) 628autoconf_is_old := $(shell find . -path ./$(KCONFIG_CONFIG) -newer \ 629 include/config/auto.conf) 630ifeq ($(autoconf_is_old),) 631include config.mk 632include arch/$(ARCH)/Makefile 633endif 634endif 635endif 636 637# These are set by the arch-specific config.mk. Make sure they are exported 638# so they can be used when building an EFI application. 639export EFI_LDS # Filename of EFI link script in arch/$(ARCH)/lib 640export EFI_CRT0 # Filename of EFI CRT0 in arch/$(ARCH)/lib 641export EFI_RELOC # Filename of EFU relocation code in arch/$(ARCH)/lib 642export CFLAGS_EFI # Compiler flags to add when building EFI app 643export CFLAGS_NON_EFI # Compiler flags to remove when building EFI app 644export EFI_TARGET # binutils target if EFI is natively supported 645 646export LTO_ENABLE 647 648# This is y if LTO is enabled for this build. See NO_LTO=1 to disable LTO 649ifeq ($(NO_LTO),) 650LTO_ENABLE=$(if $(CONFIG_LTO),y) 651endif 652 653# If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use 654# that (or fail if absent). Otherwise, search for a linker script in a 655# standard location. 656 657ifndef LDSCRIPT 658 #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug 659 ifdef CONFIG_SYS_LDSCRIPT 660 # need to strip off double quotes 661 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%) 662 endif 663endif 664 665# If there is no specified link script, we look in a number of places for it 666ifndef LDSCRIPT 667 ifeq ($(wildcard $(LDSCRIPT)),) 668 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds 669 endif 670 ifeq ($(wildcard $(LDSCRIPT)),) 671 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds 672 endif 673 ifeq ($(wildcard $(LDSCRIPT)),) 674 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds 675 endif 676endif 677 678else 679# Dummy target needed, because used as prerequisite 680include/config/auto.conf: ; 681endif # $(dot-config) 682 683ifdef CONFIG_CC_OPTIMIZE_FOR_DEBUG 684KBUILD_HOSTCFLAGS := -Wall -Wstrict-prototypes -Og -g -fomit-frame-pointer \ 685 $(HOST_LFS_CFLAGS) $(HOSTCFLAGS) 686# Avoid false positives -Wmaybe-uninitialized 687# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78394 688KBUILD_HOSTCFLAGS += -Wno-maybe-uninitialized 689KBUILD_HOSTCXXFLAGS := -Og -g $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS) 690endif 691 692# 693# Xtensa linker script cannot be preprocessed with -ansi because of 694# preprocessor operations on strings that don't make C identifiers. 695# 696ifeq ($(CONFIG_XTENSA),) 697LDPPFLAGS += -ansi 698endif 699 700ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 701KBUILD_CFLAGS += -Os 702endif 703 704ifdef CONFIG_CC_OPTIMIZE_FOR_SPEED 705KBUILD_CFLAGS += -O2 706endif 707 708ifdef CONFIG_CC_OPTIMIZE_FOR_DEBUG 709KBUILD_CFLAGS += -Og -Wno-maybe-uninitialized 710# Avoid false positives -Wmaybe-uninitialized 711# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78394 712KBUILD_CFLAGS += -Wno-maybe-uninitialized 713endif 714 715LTO_CFLAGS := 716LTO_FINAL_LDFLAGS := 717export LTO_CFLAGS LTO_FINAL_LDFLAGS 718ifeq ($(LTO_ENABLE),y) 719 ifeq ($(cc-name),clang) 720 LTO_CFLAGS += -DLTO_ENABLE -flto 721 LTO_FINAL_LDFLAGS += -flto 722 723 AR = $(shell $(CC) -print-prog-name=llvm-ar) 724 NM = $(shell $(CC) -print-prog-name=llvm-nm) 725 else 726 NPROC := $(shell nproc 2>/dev/null || echo 1) 727 LTO_CFLAGS += -DLTO_ENABLE -flto=$(NPROC) 728 LTO_FINAL_LDFLAGS += -fuse-linker-plugin -flto=$(NPROC) 729 730 # use plugin aware tools 731 AR = $(CROSS_COMPILE)gcc-ar 732 NM = $(CROSS_COMPILE)gcc-nm 733 endif 734 735 CFLAGS_NON_EFI += $(LTO_CFLAGS) 736 737 KBUILD_CFLAGS += $(LTO_CFLAGS) 738endif 739 740ifeq ($(CONFIG_STACKPROTECTOR),y) 741KBUILD_CFLAGS += $(call cc-option,-fstack-protector-strong) 742CFLAGS_EFI += $(call cc-option,-fno-stack-protector) 743else 744KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) 745endif 746KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks) 747 748# disable pointer signed / unsigned warnings in gcc 4.0 749KBUILD_CFLAGS += -Wno-pointer-sign 750 751# disable stringop warnings in gcc 8+ 752KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) 753 754KBUILD_CFLAGS += $(call cc-disable-warning, zero-length-bounds) 755KBUILD_CFLAGS += $(call cc-disable-warning, array-bounds) 756KBUILD_CFLAGS += $(call cc-disable-warning, stringop-overflow) 757 758# Enabled with W=2, disabled by default as noisy 759KBUILD_CFLAGS += $(call cc-disable-warning, maybe-uninitialized) 760 761# change __FILE__ to the relative path from the srctree 762KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) 763 764KBUILD_CFLAGS += -g 765# $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format> 766# option to the assembler. 767KBUILD_AFLAGS += -g 768 769# Report stack usage if supported 770# ARC tools based on GCC 7.1 has an issue with stack usage 771# with naked functions, see commit message for more details 772ifndef CONFIG_ARC 773ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y) 774 KBUILD_CFLAGS += -fstack-usage 775endif 776endif 777 778KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral) 779KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) 780 781ifdef CONFIG_CC_IS_CLANG 782KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) 783KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) 784KBUILD_CFLAGS += $(call cc-disable-warning, gnu) 785KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) 786# Quiet clang warning: comparison of unsigned expression < 0 is always false 787KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare) 788# CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the 789# source of a reference will be _MergedGlobals and not on of the whitelisted names. 790# See modpost pattern 2 791KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,) 792KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) 793endif 794 795# These warnings generated too much noise in a regular build. 796# Use make W=1 to enable them (see scripts/Makefile.extrawarn) 797KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) 798 799# Prohibit date/time macros, which would make the build non-deterministic 800KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) 801 802include scripts/Makefile.extrawarn 803 804# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 805KBUILD_CPPFLAGS += $(KCPPFLAGS) 806KBUILD_AFLAGS += $(KAFLAGS) 807KBUILD_CFLAGS += $(KCFLAGS) 808 809KBUILD_HOSTCFLAGS += $(if $(CONFIG_TOOLS_DEBUG),-g) 810 811# Use UBOOTINCLUDE when you must reference the include/ directory. 812# Needed to be compatible with the O= option 813UBOOTINCLUDE := \ 814 -Iinclude \ 815 $(if $(KBUILD_SRC), -I$(srctree)/include) \ 816 $(if $(CONFIG_$(SPL_)SYS_THUMB_BUILD), \ 817 $(if $(CONFIG_HAS_THUMB2), \ 818 $(if $(CONFIG_CPU_V7M), \ 819 -I$(srctree)/arch/arm/thumb1/include), \ 820 -I$(srctree)/arch/arm/thumb1/include)) \ 821 -I$(srctree)/arch/$(ARCH)/include \ 822 -include $(srctree)/include/linux/kconfig.h 823 824NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 825 826# FIX ME 827cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \ 828 $(NOSTDINC_FLAGS) 829c_flags := $(KBUILD_CFLAGS) $(cpp_flags) 830 831######################################################################### 832# U-Boot objects....order is important (i.e. start must be first) 833 834HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n) 835 836libs-$(CONFIG_API) += api/ 837libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/ 838libs-y += boot/ 839libs-y += cmd/ 840libs-y += common/ 841libs-$(CONFIG_OF_EMBED) += dts/ 842libs-y += env/ 843libs-y += lib/ 844libs-y += fs/ 845libs-y += net/ 846libs-y += disk/ 847libs-y += drivers/ 848libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/ 849libs-$(CONFIG_SYS_FSL_MMDC) += drivers/ddr/fsl/ 850libs-$(CONFIG_$(SPL_)ALTERA_SDRAM) += drivers/ddr/altera/ 851libs-y += drivers/usb/cdns3/ 852libs-y += drivers/usb/dwc3/ 853libs-y += drivers/usb/common/ 854libs-y += drivers/usb/emul/ 855libs-y += drivers/usb/eth/ 856libs-$(CONFIG_USB_DEVICE) += drivers/usb/gadget/ 857libs-$(CONFIG_USB_GADGET) += drivers/usb/gadget/ 858libs-$(CONFIG_USB_GADGET) += drivers/usb/gadget/udc/ 859libs-y += drivers/usb/host/ 860libs-y += drivers/usb/mtu3/ 861libs-y += drivers/usb/musb/ 862libs-y += drivers/usb/musb-new/ 863libs-y += drivers/usb/isp1760/ 864libs-y += drivers/usb/phy/ 865libs-y += drivers/usb/ulpi/ 866ifdef CONFIG_POST 867libs-y += post/ 868endif 869libs-$(CONFIG_$(SPL_TPL_)UNIT_TEST) += test/ 870libs-$(CONFIG_UT_ENV) += test/env/ 871libs-$(CONFIG_UT_OPTEE) += test/optee/ 872libs-$(CONFIG_UT_OVERLAY) += test/overlay/ 873 874libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/) 875 876libs-y := $(sort $(libs-y)) 877 878u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples 879 880u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-)))) 881 882libs-y := $(patsubst %/, %/built-in.o, $(libs-y)) 883 884u-boot-init := $(head-y) 885u-boot-main := $(libs-y) 886 887 888# Add GCC lib 889ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y) 890PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a 891else 892PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc 893endif 894PLATFORM_LIBS += $(PLATFORM_LIBGCC) 895 896ifdef CONFIG_CC_COVERAGE 897KBUILD_CFLAGS += --coverage 898PLATFORM_LIBGCC += -lgcov 899endif 900 901export PLATFORM_LIBS 902export PLATFORM_LIBGCC 903 904# Special flags for CPP when processing the linker script. 905# Pass the version down so we can handle backwards compatibility 906# on the fly. 907LDPPFLAGS += \ 908 -include $(srctree)/include/u-boot/u-boot.lds.h \ 909 -DCPUDIR=$(CPUDIR) \ 910 $(shell $(LD) --version | \ 911 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p') 912 913######################################################################### 914######################################################################### 915 916ifneq ($(CONFIG_BOARD_SIZE_LIMIT),) 917BOARD_SIZE_CHECK= @ $(call size_check,$@,$(CONFIG_BOARD_SIZE_LIMIT)) 918else 919BOARD_SIZE_CHECK = 920endif 921 922ifneq ($(CONFIG_SPL_SIZE_LIMIT),0x0) 923SPL_SIZE_CHECK = @$(call size_check,$@,$$(tools/spl_size_limit)) 924else 925SPL_SIZE_CHECK = 926endif 927 928ifneq ($(CONFIG_TPL_SIZE_LIMIT),0x0) 929TPL_SIZE_CHECK = @$(call size_check,$@,$(CONFIG_TPL_SIZE_LIMIT)) 930else 931TPL_SIZE_CHECK = 932endif 933 934ifneq ($(CONFIG_VPL_SIZE_LIMIT),0x0) 935VPL_SIZE_CHECK = @$(call size_check,$@,$(CONFIG_VPL_SIZE_LIMIT)) 936else 937VPL_SIZE_CHECK = 938endif 939 940# Statically apply RELA-style relocations (currently arm64 only) 941# This is useful for arm64 where static relocation needs to be performed on 942# the raw binary, but certain simulators only accept an ELF file (but don't 943# do the relocation). 944ifneq ($(CONFIG_STATIC_RELA),) 945# $(2) is u-boot ELF, $(3) is u-boot bin, $(4) is text base 946quiet_cmd_static_rela = RELOC $@ 947cmd_static_rela = \ 948 tools/relocate-rela $(3) $(2) 949else 950quiet_cmd_static_rela = 951cmd_static_rela = 952endif 953 954# Always append INPUTS so that arch config.mk's can add custom ones 955INPUTS-y += u-boot.srec u-boot.bin u-boot.sym System.map binary_size_check 956 957INPUTS-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin 958ifeq ($(CONFIG_SPL_FSL_PBL),y) 959INPUTS-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin 960else 961ifneq ($(CONFIG_NXP_ESBC), y) 962# For Secure Boot The Image needs to be signed and Header must also 963# be included. So The image has to be built explicitly 964INPUTS-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl 965endif 966endif 967INPUTS-$(CONFIG_SPL) += spl/u-boot-spl.bin 968ifeq ($(CONFIG_MX6)$(CONFIG_IMX_HAB), yy) 969INPUTS-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img 970else 971ifeq ($(CONFIG_MX7)$(CONFIG_IMX_HAB), yy) 972INPUTS-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img 973else 974INPUTS-$(CONFIG_SPL_FRAMEWORK) += u-boot.img 975endif 976endif 977INPUTS-$(CONFIG_TPL) += tpl/u-boot-tpl.bin 978INPUTS-$(CONFIG_VPL) += vpl/u-boot-vpl.bin 979 980# Allow omitting the .dtb output if it is not normally used 981INPUTS-$(CONFIG_OF_SEPARATE) += $(if $(CONFIG_OF_OMIT_DTB),dts/dt.dtb,u-boot.dtb) 982ifeq ($(CONFIG_SPL_FRAMEWORK),y) 983INPUTS-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img 984endif 985INPUTS-$(CONFIG_SANDBOX) += u-boot.dtb 986ifneq ($(CONFIG_SPL_TARGET),) 987INPUTS-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%) 988endif 989INPUTS-$(CONFIG_REMAKE_ELF) += u-boot.elf 990INPUTS-$(CONFIG_EFI_APP) += u-boot-app.efi 991INPUTS-$(CONFIG_EFI_STUB) += u-boot-payload.efi 992 993# Generate this input file for binman 994ifeq ($(CONFIG_SPL),) 995INPUTS-$(CONFIG_ARCH_MEDIATEK) += u-boot-mtk.bin 996endif 997 998# Add optional build target if defined in board/cpu/soc headers 999ifneq ($(CONFIG_BUILD_TARGET),) 1000INPUTS-y += $(CONFIG_BUILD_TARGET:"%"=%)
1001endif 1002 1003ifeq ($(CONFIG_INIT_SP_RELATIVE)$(CONFIG_OF_SEPARATE),yy) 1004INPUTS-y += init_sp_bss_offset_check 1005endif 1006 1007ifeq ($(CONFIG_ARCH_ROCKCHIP)$(CONFIG_SPL),yy) 1008# Binman image dependencies 1009ifeq ($(CONFIG_ARM64),y) 1010INPUTS-y += u-boot.itb 1011else 1012INPUTS-y += u-boot.img 1013endif 1014endif 1015 1016INPUTS-$(CONFIG_X86) += u-boot-x86-start16.bin u-boot-x86-reset16.bin \ 1017 $(if $(CONFIG_SPL_X86_16BIT_INIT),spl/u-boot-spl.bin) \ 1018 $(if $(CONFIG_TPL_X86_16BIT_INIT),tpl/u-boot-tpl.bin) 1019 1020LDFLAGS_u-boot += $(LDFLAGS_FINAL) 1021 1022# Avoid 'Not enough room for program headers' error on binutils 2.28 onwards. 1023LDFLAGS_u-boot += $(call ld-option, --no-dynamic-linker) 1024 1025# ld.lld support 1026LDFLAGS_u-boot += -z notext $(call ld-option,--apply-dynamic-relocs) 1027 1028LDFLAGS_u-boot += --build-id=none 1029 1030ifeq ($(CONFIG_ARC)$(CONFIG_NIOS2)$(CONFIG_X86)$(CONFIG_XTENSA),) 1031LDFLAGS_u-boot += -Ttext $(CONFIG_TEXT_BASE) 1032endif 1033 1034# insure the checker run with the right endianness 1035CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian) 1036 1037# the checker needs the correct machine size 1038CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 1039 1040# Normally we fill empty space with 0xff 1041quiet_cmd_objcopy = OBJCOPY $@ 1042cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \ 1043 $(OBJCOPYFLAGS_$(@F)) $< $@ 1044 1045# Provide a version which does not do this, for use by EFI 1046quiet_cmd_zobjcopy = OBJCOPY $@ 1047cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ 1048 1049quiet_cmd_efipayload = OBJCOPY $@ 1050cmd_efipayload = $(OBJCOPY) -I binary -O $(EFIPAYLOAD_BFDTARGET) -B $(EFIPAYLOAD_BFDARCH) $< $@ 1051 1052MKIMAGEOUTPUT ?= /dev/null 1053 1054quiet_cmd_mkimage = MKIMAGE $@ 1055cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \ 1056 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT)) 1057 1058quiet_cmd_mkfitimage = MKIMAGE $@ 1059cmd_mkfitimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) \ 1060 -f $(U_BOOT_ITS) -p $(CONFIG_FIT_EXTERNAL_OFFSET) $@ \ 1061 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT)) 1062 1063quiet_cmd_cat = CAT $@ 1064cmd_cat = cat $(filter-out $(PHONY), $^) > $@ 1065 1066append = cat $(filter-out $< $(PHONY), $^) >> $@ 1067 1068quiet_cmd_pad_cat = CAT $@ 1069cmd_pad_cat = $(cmd_objcopy) && $(append) || { rm -f $@; false; } 1070 1071quiet_cmd_lzma = LZMA $@ 1072cmd_lzma = lzma -c -z -k -9 $< > $@ 1073 1074cfg: u-boot.cfg 1075 1076quiet_cmd_cfgcheck = CFGCHK $2 1077cmd_cfgcheck = $(srctree)/scripts/check-config.sh $2 \ 1078 $(srctree)/scripts/config_whitelist.txt $(srctree) 1079 1080quiet_cmd_ofcheck = OFCHK $2 1081cmd_ofcheck = $(srctree)/scripts/check-of.sh $2 \ 1082 $(srctree)/scripts/of_allowlist.txt 1083 1084# Concat the value of all the CONFIGs (result is 'y' or 'yy', etc. ) 1085got = $(foreach cfg,$(1),$($(cfg))) 1086 1087# expected value 'y for each one 1088expect = $(foreach cfg,$(1),y) 1089 1090# Show a deprecation message 1091# Args: 1092# 1: List of CONFIG_DM_... to migrate to (e.g. "CONFIG_DM_MMC CONFIG_BLK") 1093# 2: Name of component (e.g . "Ethernet drivers") 1094# 3: Release deadline (e.g. "v202.07") 1095# 4: Condition to require before checking (e.g. "$(CONFIG_NET)") 1096# Note: Script avoids bash construct, hence the strange double 'if' 1097# (patches welcome!) 1098define deprecated 1099 @if [ -n "$(strip $(4))" ]; then if [ "$(got)" != "$(expect)" ]; then \ 1100 echo >&2 "===================== WARNING ======================"; \ 1101 echo >&2 "This board does not use $(firstword $(1)) (Driver Model"; \ 1102 echo >&2 "for $(2)). Please update the board to use"; \ 1103 echo >&2 "$(firstword $(1)) before the $(3) release. Failure to"; \ 1104 echo >&2 "update by the deadline may result in board removal."; \ 1105 echo >&2 "See doc/develop/driver-model/migration.rst for more info."; \ 1106 echo >&2 "===================================================="; \ 1107 fi; fi 1108 1109endef 1110 1111# Timestamp file to make sure that binman always runs 1112.binman_stamp: $(INPUTS-y) FORCE 1113ifeq ($(CONFIG_BINMAN),y) 1114 $(call if_changed,binman) 1115endif 1116 @touch $@ 1117 1118all: .binman_stamp 1119 1120ifeq ($(CONFIG_DEPRECATED),y) 1121 $(warning "You have deprecated configuration options enabled in your .config! Please check your configuration.") 1122endif 1123ifeq ($(CONFIG_OF_EMBED)$(CONFIG_EFI_APP),y) 1124 @echo >&2 "===================== WARNING ======================" 1125 @echo >&2 "CONFIG_OF_EMBED is enabled. This option should only" 1126 @echo >&2 "be used for debugging purposes. Please use" 1127 @echo >&2 "CONFIG_OF_SEPARATE for boards in mainline." 1128 @echo >&2 "See doc/develop/devicetree/control.rst for more info." 1129 @echo >&2 "====================================================" 1130endif 1131ifneq ($(CONFIG_SPL_FIT_GENERATOR),) 1132 @echo >&2 "===================== WARNING ======================" 1133 @echo >&2 "This board uses CONFIG_SPL_FIT_GENERATOR. Please migrate" 1134 @echo >&2 "to binman instead, to avoid the proliferation of" 1135 @echo >&2 "arch-specific scripts with no tests." 1136 @echo >&2 "====================================================" 1137endif 1138 $(call deprecated,CONFIG_WDT,DM watchdog,v2019.10,\ 1139 $(CONFIG_WATCHDOG)$(CONFIG_HW_WATCHDOG)) 1140 $(call deprecated,CONFIG_DM_I2C,I2C drivers,v2022.04,$(CONFIG_SYS_I2C_LEGACY)) 1141 @# CONFIG_SYS_TIMER_RATE has brackets in it for some boards which 1142 @# confuses this rule. Use if() to send just a single character which 1143 @# is enable to tell 'deprecated' that one of these symbols exists 1144 $(call deprecated,CONFIG_TIMER,Timer drivers,v2023.01,$(if $(strip $(CONFIG_SYS_TIMER_RATE)$(CONFIG_SYS_TIMER_COUNTER)),x)) 1145 $(call deprecated,CONFIG_DM_SERIAL,Serial drivers,v2023.04,$(CONFIG_SERIAL)) 1146 $(call deprecated,CONFIG_DM_SCSI,SCSI drivers,v2023.04,$(CONFIG_SCSI)) 1147 @# Check that this build does not use CONFIG options that we do not 1148 @# know about unless they are in Kconfig. All the existing CONFIG 1149 @# options are whitelisted, so new ones should not be added. 1150 $(call cmd,cfgcheck,u-boot.cfg) 1151 @# Check that this build does not override OF_HAS_PRIOR_STAGE by 1152 @# disabling OF_BOARD. 1153 $(call cmd,ofcheck,$(KCONFIG_CONFIG)) 1154 1155PHONY += dtbs 1156dtbs: dts/dt.dtb 1157 @: 1158dts/dt.dtb: u-boot 1159 $(Q)$(MAKE) $(build)=dts dtbs 1160 1161quiet_cmd_copy = COPY $@ 1162 cmd_copy = cp $< $@ 1163 1164ifeq ($(CONFIG_MULTI_DTB_FIT),y) 1165 1166ifeq ($(CONFIG_MULTI_DTB_FIT_LZO),y) 1167FINAL_DTB_CONTAINER = fit-dtb.blob.lzo 1168else ifeq ($(CONFIG_MULTI_DTB_FIT_GZIP),y) 1169FINAL_DTB_CONTAINER = fit-dtb.blob.gz 1170else 1171FINAL_DTB_CONTAINER = fit-dtb.blob 1172endif 1173 1174fit-dtb.blob.gz: fit-dtb.blob 1175 @gzip -kf9 $< > $@ 1176 1177fit-dtb.blob.lzo: fit-dtb.blob 1178 @lzop -f9 $< > $@ 1179 1180fit-dtb.blob: dts/dt.dtb FORCE 1181 $(call if_changed,mkimage) 1182ifneq ($(SOURCE_DATE_EPOCH),) 1183 touch -d @$(SOURCE_DATE_EPOCH) fit-dtb.blob 1184 chmod 0600 fit-dtb.blob 1185endif 1186 1187MKIMAGEFLAGS_fit-dtb.blob = -f auto -A $(ARCH) -T firmware -C none -O u-boot \ 1188 -a 0 -e 0 -E \ 1189 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) -d /dev/null 1190 1191MKIMAGEFLAGS_fit-dtb.blob += -B 0x8 1192 1193ifneq ($(EXT_DTB),) 1194u-boot-fit-dtb.bin: u-boot-nodtb.bin $(EXT_DTB) 1195 $(call if_changed,cat) 1196else 1197u-boot-fit-dtb.bin: u-boot-nodtb.bin $(FINAL_DTB_CONTAINER) 1198 $(call if_changed,cat) 1199endif 1200 1201u-boot.bin: u-boot-fit-dtb.bin FORCE 1202 $(call if_changed,copy) 1203 1204u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE 1205 $(call if_changed,cat) 1206 1207else ifeq ($(CONFIG_OF_SEPARATE).$(CONFIG_OF_OMIT_DTB),y.) 1208u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE 1209 $(call if_changed,cat) 1210 1211ifneq ($(CONFIG_MPC85XX_HAVE_RESET_VECTOR)$(CONFIG_OF_SEPARATE),yy) 1212u-boot.bin: u-boot-dtb.bin FORCE 1213 $(call if_changed,copy) 1214endif 1215 1216else ifneq ($(CONFIG_MPC85XX_HAVE_RESET_VECTOR)$(CONFIG_OF_SEPARATE),yy) 1217u-boot.bin: u-boot-nodtb.bin FORCE 1218 $(call if_changed,copy) 1219endif 1220 1221# we call Makefile in arch/arm/mach-imx which 1222# has targets which are dependent on targets defined 1223# here. make could not resolve them and we must ensure 1224# that they are finished before calling imx targets 1225ifeq ($(CONFIG_MULTI_DTB_FIT),y) 1226IMX_DEPS = u-boot-fit-dtb.bin 1227endif 1228 1229%.imx: $(IMX_DEPS) %.bin 1230 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 1231 $(BOARD_SIZE_CHECK) 1232 1233%.vyb: %.imx 1234 $(Q)$(MAKE) $(build)=arch/arm/cpu/armv7/vf610 $@ 1235 1236quiet_cmd_copy = COPY $@ 1237 cmd_copy = cp $< $@ 1238 1239u-boot.dtb: dts/dt.dtb 1240 $(call cmd,copy) 1241 1242OBJCOPYFLAGS_u-boot.hex := -O ihex 1243 1244OBJCOPYFLAGS_u-boot.srec := -O srec 1245 1246u-boot.hex u-boot.srec: u-boot FORCE 1247 $(call if_changed,objcopy) 1248 1249OBJCOPYFLAGS_u-boot-elf.srec := $(OBJCOPYFLAGS_u-boot.srec) 1250 1251u-boot-elf.srec: u-boot.elf FORCE 1252 $(call if_changed,objcopy) 1253 1254OBJCOPYFLAGS_u-boot-spl.srec = $(OBJCOPYFLAGS_u-boot.srec) 1255 1256spl/u-boot-spl.srec: spl/u-boot-spl FORCE 1257 $(call if_changed,objcopy) 1258 1259%.scif: %.srec 1260 $(Q)$(MAKE) $(build)=arch/arm/mach-rmobile $@ 1261 1262OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \ 1263 $(if $(CONFIG_X86_16BIT_INIT),-R .start16 -R .resetvec) \ 1264 $(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR),$(if $(CONFIG_OF_SEPARATE),-R .bootpg -R .resetvec)) 1265 1266binary_size_check: u-boot-nodtb.bin FORCE 1267 @file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \ 1268 map_size=$(shell cat u-boot.map | \ 1269 awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \ 1270 | sed 's/0X//g' \ 1271 | bc); \ 1272 if [ "" != "$$map_size" ]; then \ 1273 if test $$map_size -ne $$file_size; then \ 1274 echo "u-boot.map shows a binary size of $$map_size" >&2 ; \ 1275 echo " but u-boot-nodtb.bin shows $$file_size" >&2 ; \ 1276 exit 1; \ 1277 fi; \ 1278 fi 1279 1280ifeq ($(CONFIG_INIT_SP_RELATIVE)$(CONFIG_OF_SEPARATE),yy) 1281ifneq ($(CONFIG_SYS_MALLOC_F_LEN),) 1282subtract_sys_malloc_f_len = space=$$(($${space} - $(CONFIG_SYS_MALLOC_F_LEN))) 1283else 1284subtract_sys_malloc_f_len = true 1285endif 1286# The 1/4 margin below is somewhat arbitrary. The likely initial SP usage is 1287# so low that the DTB could probably use 90%+ of the available space, for 1288# current values of CONFIG_SYS_INIT_SP_BSS_OFFSET at least. However, let's be 1289# safe for now and tweak this later if space becomes tight. 1290# A rejected alternative would be to check that some absolute minimum stack 1291# space was available. However, since CONFIG_SYS_INIT_SP_BSS_OFFSET is 1292# deliberately build-specific, to take account of build-to-build stack usage 1293# differences due to different feature sets, there is no common absolute value 1294# to check against. 1295init_sp_bss_offset_check: u-boot.dtb FORCE 1296 @dtb_size=$(shell wc -c u-boot.dtb | awk '{print $$1}') ; \ 1297 space=$(CONFIG_SYS_INIT_SP_BSS_OFFSET) ; \ 1298 $(subtract_sys_malloc_f_len) ; \ 1299 quarter_space=$$(($${space} / 4)) ; \ 1300 if [ $${dtb_size} -gt $${quarter_space} ]; then \ 1301 echo "u-boot.dtb is larger than 1 quarter of " >&2 ; \ 1302 echo "(CONFIG_SYS_INIT_SP_BSS_OFFSET - CONFIG_SYS_MALLOC_F_LEN)" >&2 ; \ 1303 exit 1 ; \ 1304 fi 1305endif 1306 1307shell_cmd = { $(call echo-cmd,$(1)) $(cmd_$(1)); } 1308 1309quiet_cmd_objcopy_uboot = OBJCOPY $@ 1310ifdef cmd_static_rela 1311cmd_objcopy_uboot = $(cmd_objcopy) && $(call shell_cmd,static_rela,$<,$@,$(CONFIG_TEXT_BASE)) || { rm -f $@; false; } 1312else 1313cmd_objcopy_uboot = $(cmd_objcopy) 1314endif 1315 1316u-boot-nodtb.bin: u-boot FORCE 1317 $(call if_changed,objcopy_uboot) 1318 $(BOARD_SIZE_CHECK) 1319 1320u-boot.ldr: u-boot 1321 $(CREATE_LDR_ENV) 1322 $(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS) 1323 $(BOARD_SIZE_CHECK) 1324 1325# binman 1326# --------------------------------------------------------------------------- 1327# Use 'make BINMAN_DEBUG=1' to enable debugging 1328# Use 'make BINMAN_VERBOSE=3' to set vebosity level 1329default_dt := $(if $(DEVICE_TREE),$(DEVICE_TREE),$(CONFIG_DEFAULT_DEVICE_TREE)) 1330 1331quiet_cmd_binman = BINMAN $@ 1332cmd_binman = $(srctree)/tools/binman/binman $(if $(BINMAN_DEBUG),-D) \ 1333 $(foreach f,$(BINMAN_TOOLPATHS),--toolpath $(f)) \ 1334 --toolpath $(objtree)/tools \ 1335 $(if $(BINMAN_VERBOSE),-v$(BINMAN_VERBOSE)) \ 1336 build -u -d u-boot.dtb -O . -m \ 1337 $(if $(BINMAN_ALLOW_MISSING),--allow-missing --ignore-missing) \ 1338 -I . -I $(srctree) -I $(srctree)/board/$(BOARDDIR) \ 1339 -I arch/$(ARCH)/dts -a of-list=$(CONFIG_OF_LIST) \ 1340 $(foreach f,$(BINMAN_INDIRS),-I $(f)) \ 1341 -a atf-bl31-path=${BL31} \ 1342 -a tee-os-path=${TEE} \ 1343 -a opensbi-path=${OPENSBI} \ 1344 -a default-dt=$(default_dt) \ 1345 -a scp-path=$(SCP) \ 1346 -a spl-bss-pad=$(if $(CONFIG_SPL_SEPARATE_BSS),,1) \ 1347 -a tpl-bss-pad=$(if $(CONFIG_TPL_SEPARATE_BSS),,1) \ 1348 -a spl-dtb=$(CONFIG_SPL_OF_REAL) \ 1349 -a tpl-dtb=$(CONFIG_TPL_OF_REAL) \ 1350 -a pre-load-key-path=${PRE_LOAD_KEY_PATH} \ 1351 $(BINMAN_$(@F)) 1352 1353OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex 1354 1355OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec 1356 1357u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE 1358 $(call if_changed,objcopy) 1359 1360# 1361# U-Boot entry point, needed for booting of full-blown U-Boot 1362# from the SPL U-Boot version. 1363# 1364ifndef CONFIG_SYS_UBOOT_START 1365CONFIG_SYS_UBOOT_START := $(CONFIG_TEXT_BASE) 1366endif 1367 1368# Boards with more complex image requirements can provide an .its source file 1369# or a generator script 1370# NOTE: Please do not use this. We are migrating away from Makefile rules to use 1371# binman instead. 1372ifneq ($(CONFIG_SPL_FIT_SOURCE),"") 1373U_BOOT_ITS := u-boot.its 1374$(U_BOOT_ITS): $(subst ",,$(CONFIG_SPL_FIT_SOURCE)) 1375 $(call if_changed,copy) 1376else 1377ifneq ($(CONFIG_USE_SPL_FIT_GENERATOR),) 1378U_BOOT_ITS := u-boot.its 1379ifeq ($(CONFIG_SPL_FIT_GENERATOR),"arch/arm/mach-rockchip/make_fit_atf.py") 1380U_BOOT_ITS_DEPS += u-boot 1381endif 1382$(U_BOOT_ITS): $(U_BOOT_ITS_DEPS) FORCE 1383 $(srctree)/$(CONFIG_SPL_FIT_GENERATOR) \ 1384 $(patsubst %,arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) > $@ 1385endif 1386endif 1387 1388ifdef CONFIG_SPL_LOAD_FIT 1389MKIMAGEFLAGS_u-boot.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \ 1390 -a $(CONFIG_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \ 1391 -p $(CONFIG_FIT_EXTERNAL_OFFSET) \ 1392 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \ 1393 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(DEVICE_TREE))) \ 1394 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) \ 1395 $(patsubst %,-b arch/$(ARCH)/dts/%.dtbo,$(subst ",,$(CONFIG_OF_OVERLAY_LIST))) 1396else 1397MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \ 1398 -a $(CONFIG_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \ 1399 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" 1400MKIMAGEFLAGS_u-boot-ivt.img = -A $(ARCH) -T firmware_ivt -C none -O u-boot \ 1401 -a $(CONFIG_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \ 1402 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" 1403u-boot-ivt.img: MKIMAGEOUTPUT = u-boot-ivt.img.log 1404endif 1405 1406MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img) 1407 1408# Some boards have the kwbimage.cfg file written in advance, while some 1409# other boards generate it on the fly during the build in the build tree. 1410# Let's check if the file exists in the build tree first, otherwise we 1411# fall back to use the one in the source tree. 1412KWD_CONFIG_FILE = $(shell \ 1413 if [ -f $(objtree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) ]; then \ 1414 echo -n $(objtree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%); \ 1415 else \ 1416 echo -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%); \ 1417 fi) 1418 1419MKIMAGEFLAGS_u-boot.kwb = -n $(KWD_CONFIG_FILE) \ 1420 -T kwbimage -a $(CONFIG_TEXT_BASE) -e $(CONFIG_TEXT_BASE) 1421 1422MKIMAGEFLAGS_u-boot-with-spl.kwb = -n $(KWD_CONFIG_FILE) \ 1423 -T kwbimage -a $(CONFIG_TEXT_BASE) -e $(CONFIG_TEXT_BASE) \ 1424 $(if $(KEYDIR),-k $(KEYDIR)) 1425 1426MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \ 1427 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -A $(ARCH) -T pblimage 1428 1429UBOOT_BIN := u-boot.bin 1430 1431MKIMAGEFLAGS_u-boot-lzma.img = -A $(ARCH) -T standalone -C lzma -O u-boot \ 1432 -a $(CONFIG_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \ 1433 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" 1434 1435u-boot.bin.lzma: u-boot.bin FORCE 1436 $(call if_changed,lzma) 1437 1438u-boot-lzma.img: u-boot.bin.lzma FORCE 1439 $(call if_changed,mkimage) 1440 1441u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl u-boot-ivt.img: \ 1442 $(if $(CONFIG_SPL_LOAD_FIT),u-boot-nodtb.bin \ 1443 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SANDBOX),dts/dt.dtb) \ 1444 ,$(UBOOT_BIN)) FORCE 1445 $(call if_changed,mkimage) 1446 $(BOARD_SIZE_CHECK) 1447 1448ifeq ($(CONFIG_SPL_LOAD_FIT_FULL),y) 1449MKIMAGEFLAGS_u-boot.itb = 1450else 1451MKIMAGEFLAGS_u-boot.itb = -E 1452endif 1453MKIMAGEFLAGS_u-boot.itb += -B 0x8 1454 1455ifdef U_BOOT_ITS 1456u-boot.itb: u-boot-nodtb.bin \ 1457 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SANDBOX),dts/dt.dtb) \ 1458 $(U_BOOT_ITS) FORCE 1459 $(call if_changed,mkfitimage) 1460 $(BOARD_SIZE_CHECK) 1461endif 1462 1463u-boot-with-spl.kwb: u-boot.bin spl/u-boot-spl.bin FORCE 1464 $(call if_changed,mkimage) 1465 $(BOARD_SIZE_CHECK) 1466 1467u-boot.sha1: u-boot.bin 1468 tools/ubsha1 u-boot.bin 1469 1470u-boot.dis: u-boot 1471 $(OBJDUMP) -d $< > $@ 1472 1473ifneq ($(CONFIG_SPL_PAYLOAD),) 1474SPL_PAYLOAD := $(CONFIG_SPL_PAYLOAD:"%"=%) 1475else 1476SPL_PAYLOAD := u-boot.bin 1477endif 1478 1479SPL_IMAGE := $(CONFIG_SPL_IMAGE:"%"=%) 1480 1481OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \ 1482 --pad-to=$(CONFIG_SPL_PAD_TO) 1483u-boot-with-spl.bin: $(SPL_IMAGE) $(SPL_PAYLOAD) FORCE 1484 $(call if_changed,pad_cat) 1485 1486 1487ifeq ($(CONFIG_ARCH_LPC32XX)$(CONFIG_SPL),yy) 1488MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE) 1489 1490lpc32xx-spl.img: spl/u-boot-spl.bin FORCE 1491 $(call if_changed,mkimage) 1492 1493OBJCOPYFLAGS_lpc32xx-boot-0.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) 1494 1495lpc32xx-boot-0.bin: lpc32xx-spl.img FORCE 1496 $(call if_changed,objcopy) 1497 1498OBJCOPYFLAGS_lpc32xx-boot-1.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) 1499 1500lpc32xx-boot-1.bin: lpc32xx-spl.img FORCE 1501 $(call if_changed,objcopy) 1502 1503lpc32xx-full.bin: lpc32xx-boot-0.bin lpc32xx-boot-1.bin u-boot.img FORCE 1504 $(call if_changed,cat) 1505 1506endif 1507 1508OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \ 1509 --pad-to=$(CONFIG_TPL_PAD_TO) 1510tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE 1511 $(call if_changed,pad_cat) 1512 1513SPL: spl/u-boot-spl.bin FORCE 1514 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 1515 1516#ifeq ($(CONFIG_ARCH_IMX8M)$(CONFIG_ARCH_IMX8), y) 1517ifeq ($(CONFIG_SPL_LOAD_IMX_CONTAINER), y) 1518u-boot.cnt: u-boot.bin FORCE 1519 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 1520 1521flash.bin: spl/u-boot-spl.bin u-boot.cnt FORCE 1522 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 1523else 1524ifeq ($(CONFIG_BINMAN),y) 1525flash.bin: spl/u-boot-spl.bin $(INPUTS-y) FORCE 1526 $(call if_changed,binman) 1527else 1528flash.bin: spl/u-boot-spl.bin u-boot.itb FORCE 1529 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ 1530endif 1531endif 1532#endif 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_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 1560MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \ 1561 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER 1562spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE 1563 $(call if_changed,mkimage) 1564 1565ifneq ($(CONFIG_ARCH_SOCFPGA),) 1566quiet_cmd_gensplx4 = GENSPLX4 $@ 1567cmd_gensplx4 = $(OBJCOPY) -I binary -O binary --gap-fill=0x0 \ 1568 --pad-to=$(CONFIG_SPL_PAD_TO) \ 1569 spl/u-boot-spl.sfp spl/u-boot-spl.sfp && \ 1570 cat spl/u-boot-spl.sfp spl/u-boot-spl.sfp \ 1571 spl/u-boot-spl.sfp spl/u-boot-spl.sfp > $@ || { rm -f $@; false; } 1572spl/u-boot-splx4.sfp: spl/u-boot-spl.sfp FORCE 1573 $(call if_changed,gensplx4) 1574 1575quiet_cmd_socboot = SOCBOOT $@ 1576cmd_socboot = cat spl/u-boot-splx4.sfp u-boot.img > $@ || { rm -f $@; false; } 1577u-boot-with-spl.sfp: spl/u-boot-splx4.sfp u-boot.img FORCE 1578 $(call if_changed,socboot) 1579 1580quiet_cmd_gensplpadx4 = GENSPLPADX4 $@ 1581cmd_gensplpadx4 = dd if=/dev/zero of=spl/u-boot-spl.pad bs=64 count=1024 ; \ 1582 cat spl/u-boot-spl.sfp spl/u-boot-spl.pad \ 1583 spl/u-boot-spl.sfp spl/u-boot-spl.pad \ 1584 spl/u-boot-spl.sfp spl/u-boot-spl.pad \ 1585 spl/u-boot-spl.sfp spl/u-boot-spl.pad > $@ || \ 1586 { rm -f $@ spl/u-boot-spl.pad; false; } 1587u-boot-spl-padx4.sfp: spl/u-boot-spl.sfp FORCE 1588 $(call if_changed,gensplpadx4) 1589 1590quiet_cmd_socnandboot = SOCNANDBOOT $@ 1591cmd_socnandboot = cat u-boot-spl-padx4.sfp u-boot.img > $@ || { rm -f $@; false; } 1592u-boot-with-nand-spl.sfp: u-boot-spl-padx4.sfp u-boot.img FORCE 1593 $(call if_changed,socnandboot) 1594 1595endif 1596 1597ifeq ($(CONFIG_MPC85XX_HAVE_RESET_VECTOR)$(CONFIG_OF_SEPARATE),yy) 1598u-boot.bin: u-boot-nodtb.bin u-boot.dtb u-boot-br.bin FORCE 1599 $(call if_changed,binman) 1600 1601OBJCOPYFLAGS_u-boot-br.bin := -O binary -j .bootpg -j .resetvec 1602u-boot-br.bin: u-boot FORCE 1603 $(call if_changed,objcopy) 1604endif 1605 1606quiet_cmd_ldr = LD $@ 1607cmd_ldr = $(LD) $(LDFLAGS_$(@F)) \ 1608 $(filter-out FORCE,$^) -o $@ 1609 1610ifdef CONFIG_X86 1611OBJCOPYFLAGS_u-boot-x86-start16.bin := -O binary -j .start16 1612u-boot-x86-start16.bin: u-boot FORCE 1613 $(call if_changed,objcopy) 1614 1615OBJCOPYFLAGS_u-boot-x86-reset16.bin := -O binary -j .resetvec 1616u-boot-x86-reset16.bin: u-boot FORCE 1617 $(call if_changed,objcopy) 1618 1619endif # CONFIG_X86 1620 1621OBJCOPYFLAGS_u-boot-app.efi := $(OBJCOPYFLAGS_EFI) 1622u-boot-app.efi: u-boot FORCE 1623 $(call if_changed,zobjcopy) 1624 1625u-boot.bin.o: u-boot.bin FORCE 1626 $(call if_changed,efipayload) 1627 1628u-boot-payload.lds: $(LDSCRIPT_EFI) FORCE 1629 $(call if_changed_dep,cpp_lds) 1630 1631# Rule to link the EFI payload which contains a stub and a U-Boot binary 1632quiet_cmd_u-boot_payload ?= LD $@ 1633 cmd_u-boot_payload ?= $(LD) $(LDFLAGS_EFI_PAYLOAD) -o $@ \ 1634 -T u-boot-payload.lds arch/x86/cpu/call32.o \ 1635 lib/efi/efi.o lib/efi/efi_stub.o u-boot.bin.o \ 1636 $(addprefix arch/$(ARCH)/lib/,$(EFISTUB)) 1637 1638u-boot-payload: u-boot.bin.o u-boot-payload.lds FORCE 1639 $(call if_changed,u-boot_payload) 1640 1641OBJCOPYFLAGS_u-boot-payload.efi := $(OBJCOPYFLAGS_EFI) 1642u-boot-payload.efi: u-boot-payload FORCE 1643 $(call if_changed,zobjcopy) 1644 1645u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE 1646 $(call if_changed,cat) 1647 1648#Add a target to create boot binary having SPL binary in PBI format 1649#concatenated with u-boot binary. It is need by PowerPC SoC having 1650#internal SRAM <= 512KB. 1651MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \ 1652 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \ 1653 -A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE) 1654 1655spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE 1656 $(call if_changed,mkimage) 1657 1658ifeq ($(ARCH),arm) 1659UBOOT_BINLOAD := u-boot.img 1660else 1661UBOOT_BINLOAD := u-boot.bin 1662endif 1663 1664OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \ 1665 --gap-fill=0xff 1666 1667u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE 1668 $(call if_changed,pad_cat) 1669 1670# PPC4xx needs the SPL at the end of the image, since the reset vector 1671# is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target 1672# and need to introduce a new build target with the full blown U-Boot 1673# at the start padded up to the start of the SPL image. And then concat 1674# the SPL image to the end. 1675 1676OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \ 1677 --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff 1678u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE 1679 $(call if_changed,pad_cat) 1680 1681quiet_cmd_u-boot-elf ?= LD $@ 1682 cmd_u-boot-elf ?= $(LD) u-boot-elf.o -o $@ \ 1683 $(if $(CONFIG_SYS_BIG_ENDIAN),-EB,-EL) \ 1684 -T u-boot-elf.lds --defsym=$(CONFIG_PLATFORM_ELFENTRY)=$(CONFIG_TEXT_BASE) \ 1685 -Ttext=$(CONFIG_TEXT_BASE) 1686u-boot.elf: u-boot.bin u-boot-elf.lds 1687 $(Q)$(OBJCOPY) -I binary $(PLATFORM_ELFFLAGS) $< u-boot-elf.o 1688 $(call if_changed,u-boot-elf) 1689 1690u-boot-elf.lds: arch/u-boot-elf.lds prepare FORCE 1691 $(call if_changed_dep,cpp_lds) 1692 1693# MediaTek's ARM-based u-boot needs a header to contains its load address 1694# which is parsed by the BootROM. 1695# If the SPL build is enabled, the header will be added to the spl binary, 1696# and the spl binary and the u-boot.img will be combined into one file. 1697# Otherwise the header will be added to the u-boot.bin directly. 1698 1699ifeq ($(CONFIG_SPL),y) 1700spl/u-boot-spl-mtk.bin: spl/u-boot-spl 1701 1702u-boot-mtk.bin: u-boot-with-spl.bin 1703 $(call if_changed,copy) 1704else 1705MKIMAGEFLAGS_u-boot-mtk.bin = -T mtk_image \ 1706 -a $(CONFIG_TEXT_BASE) -e $(CONFIG_TEXT_BASE) \ 1707 -n "$(patsubst "%",%,$(CONFIG_MTK_BROM_HEADER_INFO))" 1708 1709u-boot-mtk.bin: u-boot.bin FORCE 1710 $(call if_changed,mkimage) 1711endif 1712 1713quiet_cmd_endian_swap = SWAP $@ 1714 cmd_endian_swap = $(srctree)/tools/endian-swap.py $< $@ 1715 1716u-boot-swap.bin: u-boot.bin FORCE 1717 $(call if_changed,endian_swap) 1718 1719ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(ARCH)/Makefile.postlink) 1720 1721# Generate linker list symbols references to force compiler to not optimize 1722# them away when compiling with LTO 1723ifeq ($(LTO_ENABLE),y) 1724u-boot-keep-syms-lto := keep-syms-lto.o 1725u-boot-keep-syms-lto_c := $(patsubst %.o,%.c,$(u-boot-keep-syms-lto)) 1726 1727quiet_cmd_keep_syms_lto = KSL $@ 1728 cmd_keep_syms_lto = \ 1729 $(srctree)/scripts/gen_ll_addressable_symbols.sh $(NM) $^ > $@ 1730 1731quiet_cmd_keep_syms_lto_cc = KSLCC $@ 1732 cmd_keep_syms_lto_cc = \ 1733 $(CC) $(filter-out $(LTO_CFLAGS),$(c_flags)) -c -o $@ $< 1734 1735$(u-boot-keep-syms-lto_c): $(u-boot-main) 1736 $(call if_changed,keep_syms_lto) 1737$(u-boot-keep-syms-lto): $(u-boot-keep-syms-lto_c) 1738 $(call if_changed,keep_syms_lto_cc) 1739else 1740u-boot-keep-syms-lto := 1741endif 1742 1743# Rule to link u-boot 1744# May be overridden by arch/$(ARCH)/config.mk 1745ifeq ($(LTO_ENABLE),y) 1746quiet_cmd_u-boot__ ?= LTO $@ 1747 cmd_u-boot__ ?= \ 1748 $(CC) -nostdlib -nostartfiles \ 1749 $(LTO_FINAL_LDFLAGS) $(c_flags) \ 1750 $(KBUILD_LDFLAGS:%=-Wl,%) $(LDFLAGS_u-boot:%=-Wl,%) -o $@ \ 1751 -T u-boot.lds $(u-boot-init) \ 1752 -Wl,--whole-archive \ 1753 $(u-boot-main) \ 1754 $(u-boot-keep-syms-lto) \ 1755 $(PLATFORM_LIBS) \ 1756 -Wl,--no-whole-archive \ 1757 -Wl,-Map,u-boot.map; \ 1758 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) 1759else 1760quiet_cmd_u-boot__ ?= LD $@ 1761 cmd_u-boot__ ?= $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_u-boot) -o $@ \ 1762 -T u-boot.lds $(u-boot-init) \ 1763 --whole-archive \ 1764 $(u-boot-main) \ 1765 --no-whole-archive \ 1766 $(PLATFORM_LIBS) -Map u-boot.map; \ 1767 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) 1768endif 1769 1770quiet_cmd_smap = GEN common/system_map.o 1771cmd_smap = \ 1772 smap=`$(call SYSTEM_MAP,u-boot) | \ 1773 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \ 1774 $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \ 1775 -c $(srctree)/common/system_map.c -o common/system_map.o 1776 1777u-boot: $(u-boot-init) $(u-boot-main) $(u-boot-keep-syms-lto) u-boot.lds FORCE 1778 +$(call if_changed,u-boot__) 1779ifeq ($(CONFIG_KALLSYMS),y) 1780 $(call cmd,smap) 1781 $(call cmd,u-boot__) common/system_map.o 1782endif 1783 1784ifeq ($(CONFIG_RISCV),y) 1785 @tools/prelink-riscv $@ 0 1786endif 1787 1788quiet_cmd_sym ?= SYM $@ 1789 cmd_sym ?= $(OBJDUMP) -t $< > $@ 1790u-boot.sym: u-boot FORCE 1791 $(call if_changed,sym) 1792 1793# Environment processing 1794# --------------------------------------------------------------------------- 1795 1796# Directory where we expect the .env file, if it exists 1797ENV_DIR := $(srctree)/board/$(BOARDDIR) 1798 1799# Basename of .env file, stripping quotes 1800ENV_SOURCE_FILE := $(CONFIG_ENV_SOURCE_FILE:"%"=%) 1801 1802# Filename of .env file 1803ENV_FILE_CFG := $(ENV_DIR)/$(ENV_SOURCE_FILE).env 1804 1805# Default filename, if CONFIG_ENV_SOURCE_FILE is empty 1806ENV_FILE_BOARD := $(ENV_DIR)/$(CONFIG_SYS_BOARD:"%"=%).env 1807 1808# Select between the CONFIG_ENV_SOURCE_FILE and the default one 1809ENV_FILE := $(if $(ENV_SOURCE_FILE),$(ENV_FILE_CFG),$(wildcard $(ENV_FILE_BOARD))) 1810 1811# Run the environment text file through the preprocessor, but only if it is 1812# non-empty, to save time and possible build errors if something is wonky with 1813# the board. 1814# If there is no ENV_FILE, produce an empty output file, to prevent a previous 1815# build's file being used in the case of in-tree builds. 1816quiet_cmd_gen_envp = ENVP $@ 1817 cmd_gen_envp = \ 1818 if [ -s "$(ENV_FILE)" ]; then \ 1819 $(CPP) -P $(CFLAGS) -x assembler-with-cpp -D__ASSEMBLY__ \ 1820 -D__UBOOT_CONFIG__ \ 1821 -I . -I include -I $(srctree)/include \ 1822 -include linux/kconfig.h -include include/config.h \ 1823 -I$(srctree)/arch/$(ARCH)/include \ 1824 $< -o $@; \ 1825 else \ 1826 rm -f $@; \ 1827 touch $@ ; \ 1828 fi 1829include/generated/env.in: include/generated/env.txt FORCE 1830 $(call cmd,gen_envp) 1831 1832# Regenerate the environment if it changes 1833# We use 'wildcard' since the file is not required to exist (at present), in 1834# which case we don't want this dependency, but instead should create an empty 1835# file 1836# This rule is useful since it shows the source file for the environment 1837quiet_cmd_envc = ENVC $@ 1838 cmd_envc = \ 1839 if [ -f "$<" ]; then \ 1840 cat $< > $@; \ 1841 elif [ -n "$(ENV_SOURCE_FILE)" ]; then \ 1842 echo "Missing file $(ENV_FILE_CFG)"; \ 1843 else \ 1844 touch $@ ; \ 1845 fi 1846 1847include/generated/env.txt: $(wildcard $(ENV_FILE)) FORCE 1848 $(call cmd,envc) 1849 1850# Write out the resulting environment, converted to a C string 1851quiet_cmd_gen_envt = ENVT $@ 1852 cmd_gen_envt = \ 1853 awk -f $(srctree)/scripts/env2string.awk $< >$@ 1854$(env_h): include/generated/env.in 1855 $(call cmd,gen_envt) 1856 1857# --------------------------------------------------------------------------- 1858 1859# The actual objects are generated when descending, 1860# make sure no implicit rule kicks in 1861$(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ; 1862 1863# Handle descending into subdirectories listed in $(u-boot-dirs) 1864# Preset locale variables to speed up the build process. Limit locale 1865# tweaks to this spot to avoid wrong language settings when running 1866# make menuconfig etc. 1867# Error messages still appears in the original language 1868 1869PHONY += $(u-boot-dirs) 1870$(u-boot-dirs): prepare scripts 1871 $(Q)$(MAKE) $(build)=$@ 1872 1873tools: prepare 1874# The "tools" are needed early 1875$(filter-out tools, $(u-boot-dirs)): tools 1876# The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC 1877# is "yes"), so compile examples after U-Boot is compiled. 1878examples: $(filter-out examples, $(u-boot-dirs)) 1879 1880define filechk_uboot.release 1881 echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1882endef 1883 1884# Store (new) UBOOTRELEASE string in include/config/uboot.release 1885include/config/uboot.release: include/config/auto.conf FORCE 1886 $(call filechk,uboot.release) 1887 1888 1889# Things we need to do before we recursively start building the kernel 1890# or the modules are listed in "prepare". 1891# A multi level approach is used. prepareN is processed before prepareN-1. 1892# archprepare is used in arch Makefiles and when processed asm symlink, 1893# version.h and scripts_basic is processed / created. 1894 1895# Listed in dependency order 1896PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 1897 1898# prepare3 is used to check if we are building in a separate output directory, 1899# and if so do: 1900# 1) Check that make has not been executed in the kernel src $(srctree) 1901prepare3: include/config/uboot.release 1902ifneq ($(KBUILD_SRC),) 1903 @$(kecho) ' Using $(srctree) as source for U-Boot' 1904 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ 1905 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ 1906 echo >&2 " in the '$(srctree)' directory.";\ 1907 /bin/false; \ 1908 fi; 1909endif 1910 1911# prepare2 creates a makefile if using a separate output directory 1912prepare2: prepare3 outputmakefile cfg 1913 1914prepare1: prepare2 $(version_h) $(timestamp_h) $(dt_h) $(env_h) \ 1915 include/config/auto.conf 1916ifeq ($(wildcard $(LDSCRIPT)),) 1917 @echo >&2 " Could not find linker script." 1918 @/bin/false 1919endif 1920 1921ifeq ($(CONFIG_USE_DEFAULT_ENV_FILE),y) 1922prepare1: $(defaultenv_h) 1923 1924envtools: $(defaultenv_h) 1925endif 1926 1927archprepare: prepare1 scripts_basic 1928 1929prepare0: archprepare FORCE 1930 $(Q)$(MAKE) $(build)=. 1931 1932# All the preparing.. 1933prepare: prepare0 1934 1935# Generate some files 1936# --------------------------------------------------------------------------- 1937 1938# Use sed to remove leading zeros from PATCHLEVEL to avoid using octal numbers 1939define filechk_version.h 1940 (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \ 1941 echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \ 1942 echo \#define U_BOOT_VERSION_NUM $(VERSION); \ 1943 echo \#define U_BOOT_VERSION_NUM_PATCH $$(echo $(PATCHLEVEL) | \ 1944 sed -e "s/^0*//"); \ 1945 echo \#define CC_VERSION_STRING \"$$(LC_ALL=C $(CC) --version | head -n 1)\"; \ 1946 echo \#define LD_VERSION_STRING \"$$(LC_ALL=C $(LD) --version | head -n 1)\"; ) 1947endef 1948 1949# The SOURCE_DATE_EPOCH mechanism requires a date that behaves like GNU date. 1950# The BSD date on the other hand behaves different and would produce errors 1951# with the misused '-d' switch. Respect that and search a working date with 1952# well known pre- and suffixes for the GNU variant of date. 1953define filechk_timestamp.h 1954 (if test -n "$${SOURCE_DATE_EPOCH}"; then \ 1955 SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \ 1956 DATE=""; \ 1957 for date in gdate date.gnu date; do \ 1958 $${date} -u -d "$${SOURCE_DATE}" >/dev/null 2>&1 && DATE="$${date}"; \ 1959 done; \ 1960 if test -n "$${DATE}"; then \ 1961 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DATE "%b %d %C%y"'; \ 1962 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TIME "%T"'; \ 1963 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TZ "%z"'; \ 1964 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_EPOCH %s'; \ 1965 else \ 1966 return 42; \ 1967 fi; \ 1968 else \ 1969 LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \ 1970 LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \ 1971 LC_ALL=C date +'#define U_BOOT_TZ "%z"'; \ 1972 LC_ALL=C date +'#define U_BOOT_EPOCH %s'; \ 1973 fi) 1974endef 1975 1976define filechk_defaultenv.h 1977 ( { grep -v '^#' | grep -v '^$$' || true ; echo '' ; } | \ 1978 tr '\n' '\0' | \ 1979 sed -e 's/\\\x0\s*//g' | \ 1980 xxd -i ; ) 1981endef 1982 1983define filechk_dt.h 1984 (if test -n "$${DEVICE_TREE}"; then \ 1985 echo \#define DEVICE_TREE \"$(DEVICE_TREE)\"; \ 1986 else \ 1987 echo \#define DEVICE_TREE CONFIG_DEFAULT_DEVICE_TREE; \ 1988 fi) 1989endef 1990 1991$(version_h): include/config/uboot.release FORCE 1992 $(call filechk,version.h) 1993 1994$(timestamp_h): $(srctree)/Makefile FORCE 1995 $(call filechk,timestamp.h) 1996 1997$(dt_h): $(srctree)/Makefile FORCE 1998 $(call filechk,dt.h) 1999 2000$(defaultenv_h): $(CONFIG_DEFAULT_ENV_FILE:"%"=%) FORCE
2001 $(call filechk,defaultenv.h) 2002 2003# --------------------------------------------------------------------------- 2004# Devicetree files 2005 2006ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/boot/dts/),) 2007dtstree := arch/$(SRCARCH)/boot/dts 2008endif 2009 2010ifneq ($(dtstree),) 2011 2012%.dtb: prepare3 scripts_dtc 2013 $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ 2014 2015PHONY += dtbs dtbs_install 2016dtbs: prepare3 scripts_dtc 2017 $(Q)$(MAKE) $(build)=$(dtstree) 2018 2019dtbs_install: 2020 $(Q)$(MAKE) $(dtbinst)=$(dtstree) 2021 2022ifdef CONFIG_OF_EARLY_FLATTREE 2023all: dtbs 2024endif 2025 2026endif 2027 2028# Check dtc and pylibfdt, if DTC is provided, else build them 2029PHONY += scripts_dtc 2030scripts_dtc: scripts_basic 2031 $(Q)if test "$(DTC)" = "$(DTC_INTREE)"; then \ 2032 $(MAKE) $(build)=scripts/dtc; \ 2033 else \ 2034 if ! $(DTC) -v >/dev/null; then \ 2035 echo '*** Failed to check dtc version: $(DTC)'; \ 2036 false; \ 2037 else \ 2038 if test "$(call dtc-version)" -lt $(DTC_MIN_VERSION); then \ 2039 echo '*** Your dtc is too old, please upgrade to dtc $(DTC_MIN_VERSION) or newer'; \ 2040 false; \ 2041 else \ 2042 if [ -n "$(CONFIG_PYLIBFDT)" ]; then \ 2043 if ! echo "import libfdt" | $(PYTHON3) 2>/dev/null; then \ 2044 echo '*** pylibfdt does not seem to be available with $(PYTHON3)'; \ 2045 false; \ 2046 fi; \ 2047 fi; \ 2048 fi; \ 2049 fi; \ 2050 fi 2051 2052# --------------------------------------------------------------------------- 2053quiet_cmd_cpp_lds = LDS $@ 2054cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) \ 2055 -D__ASSEMBLY__ -x assembler-with-cpp -std=c99 -P -o $@ $< 2056 2057u-boot.lds: $(LDSCRIPT) prepare FORCE 2058 $(call if_changed_dep,cpp_lds) 2059 2060spl/u-boot-spl.bin: spl/u-boot-spl 2061 @: 2062 $(SPL_SIZE_CHECK) 2063 2064spl/u-boot-spl-dtb.bin: spl/u-boot-spl 2065 @: 2066 2067spl/u-boot-spl-dtb.hex: spl/u-boot-spl 2068 @: 2069 2070spl/u-boot-spl: tools prepare $(if $(CONFIG_SPL_OF_CONTROL),dts/dt.dtb) 2071 $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all 2072 2073spl/sunxi-spl.bin: spl/u-boot-spl 2074 @: 2075 2076spl/sunxi-spl-with-ecc.bin: spl/sunxi-spl.bin 2077 @: 2078 2079spl/u-boot-spl.sfp: spl/u-boot-spl 2080 @: 2081 2082spl/boot.bin: spl/u-boot-spl 2083 @: 2084 2085tpl/u-boot-tpl.bin: tpl/u-boot-tpl 2086 @: 2087 $(TPL_SIZE_CHECK) 2088 2089tpl/u-boot-tpl: tools prepare $(if $(CONFIG_TPL_OF_CONTROL),dts/dt.dtb) 2090 $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all 2091 2092vpl/u-boot-vpl.bin: vpl/u-boot-vpl 2093 @: 2094 $(VPL_SIZE_CHECK) 2095 2096vpl/u-boot-vpl: tools prepare $(if $(CONFIG_TPL_OF_CONTROL),dts/dt.dtb) 2097 $(Q)$(MAKE) obj=vpl -f $(srctree)/scripts/Makefile.spl all 2098 2099TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include) 2100 2101FIND := find 2102FINDFLAGS := -L 2103 2104tags ctags: 2105 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \ 2106 -name '*.[chS]' -print` 2107 ln -s ctags tags 2108 2109etags: 2110 etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \ 2111 -name '*.[chS]' -print` 2112cscope: 2113 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \ 2114 cscope.files 2115 @find $(TAG_SUBDIRS) -name '*.[chS]' -type l -print | \ 2116 grep -xvf - cscope.files > cscope.files.no-symlinks; \ 2117 mv cscope.files.no-symlinks cscope.files 2118 cscope -b -q -k 2119 2120SYSTEM_MAP = \ 2121 $(NM) $1 | \ 2122 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \ 2123 LC_ALL=C sort 2124System.map: u-boot 2125 @$(call SYSTEM_MAP,$<) > $@ 2126 2127######################################################################### 2128 2129# ARM relocations should all be R_ARM_RELATIVE (32-bit) or 2130# R_AARCH64_RELATIVE (64-bit). 2131checkarmreloc: u-boot 2132 @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \ 2133 grep R_A | sort -u`"; \ 2134 if test "$$RELOC" != "R_ARM_RELATIVE" -a \ 2135 "$$RELOC" != "R_AARCH64_RELATIVE"; then \ 2136 echo "$< contains unexpected relocations: $$RELOC"; \ 2137 false; \ 2138 fi 2139 2140tools/version.h: include/version.h 2141 $(Q)mkdir -p $(dir $@) 2142 $(call if_changed,copy) 2143 2144envtools: scripts_basic $(version_h) $(timestamp_h) tools/version.h 2145 $(Q)$(MAKE) $(build)=tools/env 2146 2147tools-only: export TOOLS_ONLY=y 2148tools-only: scripts_basic $(version_h) $(timestamp_h) tools/version.h 2149 $(Q)$(MAKE) $(build)=tools 2150 2151tools-all: export HOST_TOOLS_ALL=y 2152tools-all: envtools tools ; 2153 2154cross_tools: export CROSS_BUILD_TOOLS=y 2155cross_tools: tools ; 2156 2157.PHONY : CHANGELOG 2158CHANGELOG: 2159 git log --no-merges U-Boot-1_1_5.. | \ 2160 unexpand -a | sed -e 's/\s\s*$$//' > $@ 2161 2162######################################################################### 2163 2164### 2165# Cleaning is done on three levels. 2166# make clean Delete most generated files 2167# Leave enough to build external modules 2168# make mrproper Delete the current configuration, and all generated files 2169# make distclean Remove editor backup files, patch leftover files and the like 2170 2171# Directories & files removed with 'make clean' 2172CLEAN_DIRS += $(MODVERDIR) \ 2173 $(foreach d, spl tpl, $(patsubst %,$d/%, \ 2174 $(filter-out include, $(shell ls -1 $d 2>/dev/null)))) 2175 2176CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h \ 2177 include/generated/env.* drivers/video/u_boot_logo.S \ 2178 tools/version.h u-boot* MLO* SPL System.map fit-dtb.blob* \ 2179 u-boot-ivt.img.log u-boot-dtb.imx.log SPL.log u-boot.imx.log \ 2180 lpc32xx-* bl31.c bl31.elf bl31_*.bin image.map tispl.bin* \ 2181 idbloader.img flash.bin flash.log defconfig keep-syms-lto.c \ 2182 mkimage-out.spl.mkimage mkimage.spl.mkimage imx-boot.map \ 2183 itb.fit.fit itb.fit.itb itb.map spl.map mkimage-out.rom.mkimage \ 2184 mkimage.rom.mkimage rom.map simple-bin.map simple-bin-spi.map \ 2185 idbloader-spi.img 2186 2187# Directories & files removed with 'make mrproper' 2188MRPROPER_DIRS += include/config include/generated spl tpl \ 2189 .tmp_objdiff doc/output include/asm 2190 2191# Remove include/asm symlink created by U-Boot before v2014.01 2192MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \ 2193 ctags etags tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ 2194 drivers/video/fonts/*.S include/asm 2195 2196# clean - Delete most, but leave enough to build external modules 2197# 2198clean: rm-dirs := $(CLEAN_DIRS) 2199clean: rm-files := $(CLEAN_FILES) 2200 2201clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f)) 2202 2203clean-dirs := $(addprefix _clean_, $(clean-dirs)) 2204 2205PHONY += $(clean-dirs) clean archclean 2206$(clean-dirs): 2207 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 2208 2209clean: $(clean-dirs) 2210 $(call cmd,rmdirs) 2211 $(call cmd,rmfiles) 2212 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 2213 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 2214 -o -name '*.ko.*' -o -name '*.su' -o -name '*.pyc' \ 2215 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 2216 -o -name '*.lex.c' -o -name '*.tab.[ch]' \ 2217 -o -name '*.asn1.[ch]' \ 2218 -o -name '*.symtypes' -o -name 'modules.order' \ 2219 -o -name modules.builtin -o -name '.tmp_*.o.*' \ 2220 -o -name 'dsdt_generated.aml' -o -name 'dsdt_generated.asl.tmp' \ 2221 -o -name 'dsdt_generated.c' \ 2222 -o -name '*.efi' -o -name '*.gcno' -o -name '*.so' \) \ 2223 -type f -print | xargs rm -f 2224 2225# mrproper - Delete all generated files, including .config 2226# 2227mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 2228mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 2229mrproper-dirs := $(addprefix _mrproper_,scripts) 2230 2231PHONY += $(mrproper-dirs) mrproper archmrproper 2232$(mrproper-dirs): 2233 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 2234 2235mrproper: clean $(mrproper-dirs) 2236 $(call cmd,rmdirs) 2237 $(call cmd,rmfiles) 2238 @rm -f arch/*/include/asm/arch 2239 2240# distclean 2241# 2242PHONY += distclean 2243 2244distclean: mrproper 2245 @find $(srctree) $(RCS_FIND_IGNORE) \ 2246 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 2247 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 2248 -o -name '.*.rej' -o -name '*%' -o -name 'core' \ 2249 -o -name '*.pyc' \) \ 2250 -type f -print | xargs rm -f 2251 @rm -f boards.cfg CHANGELOG 2252 2253# See doc/develop/python_cq.rst 2254PHONY += pylint pylint_err 2255PYLINT_BASE := scripts/pylint.base 2256PYLINT_CUR := pylint.cur 2257PYLINT_DIFF := pylint.diff 2258pylint: 2259 $(Q)echo "Running pylint on all files (summary in $(PYLINT_CUR); output in pylint.out/)" 2260 $(Q)mkdir -p pylint.out 2261 $(Q)rm -f pylint.out/out* 2262 $(Q)find tools test -name "*.py" \ 2263 | xargs -n1 -P$(shell nproc 2>/dev/null || echo 1) \ 2264 sh -c 'pylint --reports=y --exit-zero -f parseable --ignore-imports=yes $$@ > pylint.out/$$(echo $$@ | tr / _ | sed s/.py//)' _ 2265 $(Q)rm -f $(PYLINT_CUR) 2266 $(Q)( cd pylint.out; for f in *; do \ 2267 sed -ne "s/Your code has been rated at \([-0-9.]*\).*/$$f \1/p" $$f; \ 2268 done ) | sort > $(PYLINT_CUR) 2269 $(Q)base=$$(mktemp) cur=$$(mktemp); cut -d' ' -f1 $(PYLINT_BASE) >$$base; \ 2270 cut -d' ' -f1 $(PYLINT_CUR) >$$cur; \ 2271 comm -3 $$base $$cur > $(PYLINT_DIFF); \ 2272 if [ -s $(PYLINT_DIFF) ]; then \ 2273 echo "Files have been added/removed. Try:\n\tcp $(PYLINT_CUR) $(PYLINT_BASE)"; \ 2274 echo; \ 2275 echo "Added files:"; \ 2276 comm -13 $$base $$cur; \ 2277 echo; \ 2278 echo "Removed files:"; \ 2279 comm -23 $$base $$cur; \ 2280 false; \ 2281 else \ 2282 rm $$base $$cur $(PYLINT_DIFF); \ 2283 fi 2284 $(Q)bad=false; while read base_file base_val <&3 && read cur_file cur_val <&4; do \ 2285 if awk "BEGIN {exit !($$cur_val < $$base_val)}"; then \ 2286 echo "$$base_file: Score was $$base_val, now $$cur_val"; \ 2287 bad=true; fi; \ 2288 done 3<$(PYLINT_BASE) 4<$(PYLINT_CUR); \ 2289 if $$bad; then \ 2290 echo "Some files have regressed, please fix"; \ 2291 false; \ 2292 else \ 2293 echo "No pylint regressions"; \ 2294 fi 2295 2296# Check for errors only 2297pylint_err: 2298 $(Q)pylint -E -j 0 --ignore-imports=yes \ 2299 $(shell find tools test -name "*.py") 2300 2301backup: 2302 F=`basename $(srctree)` ; cd .. ; \ 2303 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F 2304 2305help: 2306 @echo 'Cleaning targets:' 2307 @echo ' clean - Remove most generated files but keep the config' 2308 @echo ' mrproper - Remove all generated files + config + various backup files' 2309 @echo ' distclean - mrproper + remove editor backup and patch files' 2310 @echo '' 2311 @echo 'Configuration targets:' 2312 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 2313 @echo '' 2314 @echo 'Test targets:' 2315 @echo '' 2316 @echo ' check - Run all automated tests that use sandbox' 2317 @echo ' pcheck - Run quick automated tests in parallel' 2318 @echo ' qcheck - Run quick automated tests that use sandbox' 2319 @echo ' tcheck - Run quick automated tests on tools' 2320 @echo ' pylint - Run pylint on all Python files' 2321 @echo '' 2322 @echo 'Other generic targets:' 2323 @echo ' all - Build all necessary images depending on configuration' 2324 @echo ' tests - Build U-Boot for sandbox and run tests' 2325 @echo '* u-boot - Build the bare u-boot' 2326 @echo ' dir/ - Build all files in dir and below' 2327 @echo ' dir/file.[oisS] - Build specified target only' 2328 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 2329 @echo ' (requires a recent binutils and recent build (System.map))' 2330 @echo ' tags/ctags - Generate ctags file for editors' 2331 @echo ' etags - Generate etags file for editors' 2332 @echo ' cscope - Generate cscope index' 2333 @echo ' ubootrelease - Output the release version string (use with make -s)' 2334 @echo ' ubootversion - Output the version stored in Makefile (use with make -s)' 2335 @echo " cfg - Don't build, just create the .cfg files" 2336 @echo " envtools - Build only the target-side environment tools" 2337 @echo '' 2338 @echo 'Static analysers' 2339 @echo ' checkstack - Generate a list of stack hogs' 2340 @echo ' coccicheck - Execute static code analysis with Coccinelle' 2341 @echo '' 2342 @echo 'Documentation targets:' 2343 @$(MAKE) -f $(srctree)/doc/Makefile dochelp 2344 @echo '' 2345 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 2346 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 2347 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 2348 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 2349 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 2350 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 2351 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' 2352 @echo ' 1: warnings which may be relevant and do not occur too often' 2353 @echo ' 2: warnings which occur quite often but may still be relevant' 2354 @echo ' 3: more obscure warnings, can most likely be ignored' 2355 @echo ' Multiple levels can be combined with W=12 or W=123' 2356 @echo '' 2357 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 2358 @echo 'For further info see the ./README file' 2359 2360tests check: 2361 $(srctree)/test/run 2362 2363pcheck: 2364 $(srctree)/test/run parallel 2365 2366qcheck: 2367 $(srctree)/test/run quick 2368 2369tcheck: 2370 $(srctree)/test/run tools 2371 2372# Documentation targets 2373# --------------------------------------------------------------------------- 2374DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \ 2375 linkcheckdocs dochelp refcheckdocs texinfodocs infodocs 2376PHONY += $(DOC_TARGETS) 2377$(DOC_TARGETS): scripts_basic FORCE 2378 $(Q)$(MAKE) $(build)=doc $@ 2379 2380PHONY += checkstack ubootrelease ubootversion 2381 2382checkstack: 2383 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \ 2384 $(PERL) $(src)/scripts/checkstack.pl $(ARCH) 2385 2386ubootrelease: 2387 @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 2388 2389ubootversion: 2390 @echo $(UBOOTVERSION) 2391 2392# Single targets 2393# --------------------------------------------------------------------------- 2394# Single targets are compatible with: 2395# - build with mixed source and output 2396# - build with separate output dir 'make O=...' 2397# - external modules 2398# 2399# target-dir => where to store outputfile 2400# build-dir => directory in kernel source tree to use 2401 2402ifeq ($(KBUILD_EXTMOD),) 2403 build-dir = $(patsubst %/,%,$(dir $@)) 2404 target-dir = $(dir $@) 2405else 2406 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) 2407 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) 2408 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) 2409endif 2410 2411%.s: %.c prepare scripts FORCE 2412 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 2413%.i: %.c prepare scripts FORCE 2414 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 2415%.o: %.c prepare scripts FORCE 2416 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 2417%.lst: %.c prepare scripts FORCE 2418 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 2419%.s: %.S prepare scripts FORCE 2420 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 2421%.o: %.S prepare scripts FORCE 2422 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 2423%.symtypes: %.c prepare scripts FORCE 2424 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 2425 2426# Modules 2427/: prepare scripts FORCE 2428 $(cmd_crmodverdir) 2429 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 2430 $(build)=$(build-dir) 2431%/: prepare scripts FORCE 2432 $(cmd_crmodverdir) 2433 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 2434 $(build)=$(build-dir) 2435%.ko: prepare scripts FORCE 2436 $(cmd_crmodverdir) 2437 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 2438 $(build)=$(build-dir) $(@:.ko=.o) 2439 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 2440 2441quiet_cmd_genenv = GENENV $@ 2442cmd_genenv = $(OBJCOPY) --dump-section .rodata.default_environment=$@ env/common.o; \ 2443 sed --in-place -e 's/\x00/\x0A/g' $@; sed --in-place -e '/^\s*$$/d' $@; \ 2444 sort --field-separator== -k1,1 --stable $@ -o $@ 2445 2446u-boot-initial-env: u-boot.bin 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