1 # SPDX-License-Identifier: GPL-2.0+
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.
15 # o Do not use make's built-in rules and variables
16 # (this increases performance and avoids hard-to-debug behaviour);
17 # o Look for make include files relative to root of kernel src
18 MAKEFLAGS += -rR --include-dir=$(CURDIR)
20 # Avoid funny character set dependencies
24 export LC_COLLATE LC_NUMERIC
26 # Avoid interference with shell env settings
29 # We are using a recursive build, so we need to do a little thinking
30 # to get the ordering right.
32 # Most importantly: sub-Makefiles should only ever modify files in
33 # their own directory. If in some directory we have a dependency on
34 # a file in another dir (which doesn't happen often, but it's often
35 # unavoidable when linking the built-in.o targets which finally
36 # turn into vmlinux), we will call a sub make in that other dir, and
37 # after that we are sure that everything which is in that other dir
40 # The only cases where we need to modify files which have global
41 # effects are thus separated out and done before the recursive
42 # descending is started. They are now explicitly listed as the
46 # ---------------------------------------------------------------------------
48 # Normally, we echo the whole command before executing it. By making
49 # that echo $($(quiet)$(cmd)), we now have the possibility to set
50 # $(quiet) to choose other forms of output instead, e.g.
52 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
53 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
55 # If $(quiet) is empty, the whole command will be printed.
56 # If it is set to "quiet_", only the short version will be printed.
57 # If it is set to "silent_", nothing will be printed at all, since
58 # the variable $(silent_cmd_cc_o_c) doesn't exist.
60 # A simple variant is to prefix commands with $(Q) - that's useful
61 # for commands that shall be hidden in non-verbose mode.
65 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
66 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
68 # To put more focus on warnings, be less verbose as default
69 # Use 'make V=1' to see the full commands
71 ifeq ("$(origin V)", "command line")
78 ifeq ($(KBUILD_VERBOSE),1)
86 # If the user is running make -s (silent mode), suppress echoing of
89 ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4
90 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
94 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
99 export quiet Q KBUILD_VERBOSE
101 # kbuild supports saving output files in a separate directory.
102 # To locate output files in a separate directory two syntaxes are supported.
103 # In both cases the working directory must be the root of the kernel src.
105 # Use "make O=dir/to/store/output/files/"
107 # 2) Set KBUILD_OUTPUT
108 # Set the environment variable KBUILD_OUTPUT to point to the directory
109 # where the output files shall be placed.
110 # export KBUILD_OUTPUT=dir/to/store/output/files/
113 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
116 # KBUILD_SRC is set on invocation of make in OBJ directory
117 # KBUILD_SRC is not intended to be used by the regular user (for now)
118 ifeq ($(KBUILD_SRC),)
120 # OK, Make called in directory where kernel src resides
121 # Do we want to locate output files in a separate directory?
122 ifeq ("$(origin O)", "command line")
123 KBUILD_OUTPUT := $(O)
126 # That's our default target when none is given on the command line
130 # Cancel implicit rules on top Makefile
131 $(CURDIR)/Makefile Makefile: ;
133 ifneq ($(KBUILD_OUTPUT),)
134 # Invoke a second make in the output directory, passing relevant variables
135 # check that the output directory actually exists
136 saved-output := $(KBUILD_OUTPUT)
137 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
139 $(if $(KBUILD_OUTPUT),, \
140 $(error failed to create output directory "$(saved-output)"))
142 PHONY += $(MAKECMDGOALS) sub-make
144 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
148 $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
149 -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS))
151 # Leave processing to above invocation of make
153 endif # ifneq ($(KBUILD_OUTPUT),)
154 endif # ifeq ($(KBUILD_SRC),)
156 # We process the rest of the Makefile if this is the final invocation of make
157 ifeq ($(skip-makefile),)
159 # Do not print "Entering directory ...",
160 # but we want to display it when entering to the output directory
161 # so that IDEs/editors are able to understand relative filenames.
162 MAKEFLAGS += --no-print-directory
164 # Call a source code checker (by default, "sparse") as part of the
167 # Use 'make C=1' to enable checking of only re-compiled files.
168 # Use 'make C=2' to enable checking of *all* source files, regardless
169 # of whether they are re-compiled or not.
171 # See the file "doc/sparse.txt" for more details, including
172 # where to get the "sparse" utility.
174 ifeq ("$(origin C)", "command line")
175 KBUILD_CHECKSRC = $(C)
177 ifndef KBUILD_CHECKSRC
181 # Use make M=dir to specify directory of external module to build
182 # Old syntax make ... SUBDIRS=$PWD is still supported
183 # Setting the environment variable KBUILD_EXTMOD take precedence
185 KBUILD_EXTMOD ?= $(SUBDIRS)
188 ifeq ("$(origin M)", "command line")
189 KBUILD_EXTMOD := $(M)
192 # If building an external module we do not care about the all: rule
193 # but instead _all depend on modules
195 ifeq ($(KBUILD_EXTMOD),)
201 ifeq ($(KBUILD_SRC),)
202 # building in the source tree
205 ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
206 # building in a subdirectory of the source tree
209 srctree := $(KBUILD_SRC)
216 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
218 export srctree objtree VPATH
220 # Make sure CDPATH settings don't interfere
223 #########################################################################
225 HOSTARCH := $(shell uname -m | \
227 -e s/sun4u/sparc64/ \
230 -e s/ppc64/powerpc/ \
232 -e s/macppc/powerpc/\
235 HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
236 sed -e 's/\(cygwin\).*/cygwin/')
238 export HOSTARCH HOSTOS
240 #########################################################################
242 # set default to nothing for native builds
243 ifeq ($(HOSTARCH),$(ARCH))
247 KCONFIG_CONFIG ?= .config
248 export KCONFIG_CONFIG
250 # SHELL used by kbuild
251 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
252 else if [ -x /bin/bash ]; then echo /bin/bash; \
253 else echo sh; fi ; fi)
257 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \
258 $(if $(CONFIG_TOOLS_DEBUG),-g)
261 # With the move to GCC 6, we have implicitly upgraded our language
262 # standard to GNU11 (see https://gcc.gnu.org/gcc-5/porting_to.html).
263 # Some Linux distributions (including RHEL7, SLES13, Debian 8) still
264 # have older compilers as their default, so we make it explicit for
265 # these that our host tools are GNU11 (i.e. C11 w/ GNU extensions).
266 CSTD_FLAG := -std=gnu11
267 ifeq ($(HOSTOS),linux)
268 HOSTCFLAGS += $(CSTD_FLAG)
271 ifeq ($(HOSTOS),cygwin)
275 # Mac OS X / Darwin's C preprocessor is Apple specific. It
276 # generates numerous errors and warnings. We want to bypass it
277 # and use GNU C's cpp. To do this we pass the -traditional-cpp
278 # option to the compiler. Note that the -traditional-cpp flag
279 # DOES NOT have the same semantics as GNU C's flag, all it does
280 # is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
282 # Apple's linker is similar, thanks to the new 2 stage linking
283 # multiple symbol definitions are treated as errors, hence the
284 # -multiply_defined suppress option to turn off this error.
286 ifeq ($(HOSTOS),darwin)
287 # get major and minor product version (e.g. '10' and '6' for Snow Leopard)
288 DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.')
289 DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.')
291 os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
292 $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
294 os_x_after = $(shell if [ $(DARWIN_MAJOR_VERSION) -ge $(1) -a \
295 $(DARWIN_MINOR_VERSION) -ge $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
297 # Snow Leopards build environment has no longer restrictions as described above
298 HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc")
299 HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp")
300 HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
302 # since Lion (10.7) ASLR is on by default, but we use linker generated lists
303 # in some host tools which is a problem then ... so disable ASLR for these
305 HOSTLDFLAGS += $(call os_x_before, 10, 7, "", "-Xlinker -no_pie")
307 # macOS Mojave (10.14.X)
308 # Undefined symbols for architecture x86_64: "_PyArg_ParseTuple"
309 HOSTLDFLAGS += $(call os_x_after, 10, 14, "-lpython -dynamclib", "")
312 # Decide whether to build built-in, modular, or both.
313 # Normally, just do built-in.
318 # If we have only "make modules", don't compile built-in objects.
319 # When we're building modules with modversions, we need to consider
320 # the built-in objects during the descend as well, in order to
321 # make sure the checksums are up to date before we record them.
323 ifeq ($(MAKECMDGOALS),modules)
324 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
327 # If we have "make <whatever> modules", compile modules
328 # in addition to whatever we do anyway.
329 # Just "make" or "make all" shall build modules as well
331 # U-Boot does not need modules
332 #ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
333 # KBUILD_MODULES := 1
336 #ifeq ($(MAKECMDGOALS),)
337 # KBUILD_MODULES := 1
340 # Check ths size of a binary:
343 # #2: Size limit in bytes (decimal or 0xhex)
345 actual=$$( wc -c $1 | awk '{print $$1}'); \
346 limit=$$( printf "%d" $2 ); \
347 if test $$actual -gt $$limit; then \
348 echo "$1 exceeds file size limit:" >&2; \
349 echo " limit: $$(printf %#x bytes $$limit) bytes" >&2; \
350 echo " actual: $$(printf %#x $$actual) bytes" >&2; \
351 echo " excess: $$(printf %#x $$((actual - limit))) bytes" >&2;\
357 export KBUILD_MODULES KBUILD_BUILTIN
358 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
360 # We need some generic definitions (do not try to remake the file).
361 scripts/Kbuild.include: ;
362 include scripts/Kbuild.include
364 # Make variables (CC, etc...)
366 AS = $(CROSS_COMPILE)as
368 ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
369 LD = $(CROSS_COMPILE)ld.bfd
371 LD = $(CROSS_COMPILE)ld
373 CC = $(CROSS_COMPILE)gcc
375 AR = $(CROSS_COMPILE)ar
376 NM = $(CROSS_COMPILE)nm
377 LDR = $(CROSS_COMPILE)ldr
378 STRIP = $(CROSS_COMPILE)strip
379 OBJCOPY = $(CROSS_COMPILE)objcopy
380 OBJDUMP = $(CROSS_COMPILE)objdump
388 DTC ?= $(objtree)/scripts/dtc/dtc
391 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
392 -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
394 KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__
396 KBUILD_CFLAGS := -Wall -Wstrict-prototypes \
397 -Wno-format-security \
398 -fno-builtin -ffreestanding $(CSTD_FLAG)
399 KBUILD_CFLAGS += -fshort-wchar -fno-strict-aliasing
400 KBUILD_AFLAGS := -D__ASSEMBLY__
402 # Don't generate position independent code
403 KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
404 KBUILD_AFLAGS += $(call cc-option,-fno-PIE)
406 # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
407 UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
408 UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
410 export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
411 export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
412 export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
413 export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
414 export MAKE LEX YACC AWK PERL PYTHON PYTHON2 PYTHON3
415 export HOSTCXX HOSTCXXFLAGS CHECK CHECKFLAGS DTC DTC_FLAGS
417 export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
418 export KBUILD_CFLAGS KBUILD_AFLAGS
420 # When compiling out-of-tree modules, put MODVERDIR in the module
421 # tree rather than in the kernel tree. The kernel tree might
423 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
425 # Files to ignore in find ... statements
427 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
428 -name CVS -o -name .pc -o -name .hg -o -name .git \) \
430 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
431 --exclude CVS --exclude .pc --exclude .hg --exclude .git
433 # ===========================================================================
434 # Rules shared between *config targets and build targets
436 # Basic helpers built in scripts/
437 PHONY += scripts_basic
439 $(Q)$(MAKE) $(build)=scripts/basic
440 $(Q)rm -f .tmp_quiet_recordmcount
442 # To avoid any implicit rule to kick in, define an empty command.
443 scripts/basic/%: scripts_basic ;
445 PHONY += outputmakefile
446 # outputmakefile generates a Makefile in the output directory, if using a
447 # separate output directory. This allows convenient use of make in the
450 ifneq ($(KBUILD_SRC),)
451 $(Q)ln -fsn $(srctree) source
452 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
453 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
456 # To make sure we do not include .config for any of the *config targets
457 # catch them early, and hand them over to scripts/kconfig/Makefile
458 # It is allowed to specify more targets when calling make, including
459 # mixing *config targets and build targets.
460 # For example 'make oldconfig all'.
461 # Detect when mixed targets is specified, and make a second invocation
462 # of make so .config is not included in this case either (for *config).
464 version_h := include/generated/version_autogenerated.h
465 timestamp_h := include/generated/timestamp_autogenerated.h
466 defaultenv_h := include/generated/defaultenv_autogenerated.h
468 no-dot-config-targets := clean clobber mrproper distclean \
469 help %docs check% coccicheck \
470 ubootversion backup tests check qcheck
476 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
477 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
482 ifeq ($(KBUILD_EXTMOD),)
483 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
485 ifneq ($(words $(MAKECMDGOALS)),1)
491 ifeq ($(mixed-targets),1)
492 # ===========================================================================
493 # We're called with mixed targets (*config and build targets).
494 # Handle them one by one.
496 PHONY += $(MAKECMDGOALS) __build_one_by_one
498 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
503 for i in $(MAKECMDGOALS); do \
504 $(MAKE) -f $(srctree)/Makefile $$i; \
508 ifeq ($(config-targets),1)
509 # ===========================================================================
510 # *config targets only - make sure prerequisites are updated, and descend
511 # in scripts/kconfig to make the *config target
513 KBUILD_DEFCONFIG := sandbox_defconfig
514 export KBUILD_DEFCONFIG KBUILD_KCONFIG
516 config: scripts_basic outputmakefile FORCE
517 $(Q)$(MAKE) $(build)=scripts/kconfig $@
519 %config: scripts_basic outputmakefile FORCE
520 $(Q)$(MAKE) $(build)=scripts/kconfig $@
523 # ===========================================================================
524 # Build targets only - this includes vmlinux, arch specific targets, clean
525 # targets and others. In general all targets except *config targets.
527 # Additional helpers built in scripts/
528 # Carefully list dependencies so we do not try to build scripts twice
531 scripts: scripts_basic include/config/auto.conf
532 $(Q)$(MAKE) $(build)=$(@)
534 ifeq ($(dot-config),1)
536 -include include/config/auto.conf
538 # Read in dependencies to all Kconfig* files, make sure to run
539 # oldconfig if changes are detected.
540 -include include/config/auto.conf.cmd
542 # To avoid any implicit rule to kick in, define an empty command
543 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
545 # If .config is newer than include/config/auto.conf, someone tinkered
546 # with it and forgot to run make oldconfig.
547 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
548 # we execute the config step to be sure to catch updated Kconfig files
549 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
550 $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig
551 @# If the following part fails, include/config/auto.conf should be
552 @# deleted so "make silentoldconfig" will be re-run on the next build.
553 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf || \
554 { rm -f include/config/auto.conf; false; }
555 @# include/config.h has been updated after "make silentoldconfig".
556 @# We need to touch include/config/auto.conf so it gets newer
557 @# than include/config.h.
558 @# Otherwise, 'make silentoldconfig' would be invoked twice.
559 $(Q)touch include/config/auto.conf
561 u-boot.cfg spl/u-boot.cfg tpl/u-boot.cfg:
562 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf $(@)
564 -include include/autoconf.mk
565 -include include/autoconf.mk.dep
567 # We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf
568 # is up-to-date. When we switch to a different board configuration, old CONFIG
569 # macros are still remaining in include/config/auto.conf. Without the following
570 # gimmick, wrong config.mk would be included leading nasty warnings/errors.
571 ifneq ($(wildcard $(KCONFIG_CONFIG)),)
572 ifneq ($(wildcard include/config/auto.conf),)
573 autoconf_is_old := $(shell find . -path ./$(KCONFIG_CONFIG) -newer \
574 include/config/auto.conf)
575 ifeq ($(autoconf_is_old),)
577 include arch/$(ARCH)/Makefile
582 # These are set by the arch-specific config.mk. Make sure they are exported
583 # so they can be used when building an EFI application.
584 export EFI_LDS # Filename of EFI link script in arch/$(ARCH)/lib
585 export EFI_CRT0 # Filename of EFI CRT0 in arch/$(ARCH)/lib
586 export EFI_RELOC # Filename of EFU relocation code in arch/$(ARCH)/lib
587 export CFLAGS_EFI # Compiler flags to add when building EFI app
588 export CFLAGS_NON_EFI # Compiler flags to remove when building EFI app
589 export EFI_TARGET # binutils target if EFI is natively supported
591 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
592 # that (or fail if absent). Otherwise, search for a linker script in a
596 #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
597 ifdef CONFIG_SYS_LDSCRIPT
598 # need to strip off double quotes
599 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
603 # If there is no specified link script, we look in a number of places for it
605 ifeq ($(wildcard $(LDSCRIPT)),)
606 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
608 ifeq ($(wildcard $(LDSCRIPT)),)
609 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
611 ifeq ($(wildcard $(LDSCRIPT)),)
612 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
617 # Dummy target needed, because used as prerequisite
618 include/config/auto.conf: ;
619 endif # $(dot-config)
622 # Xtensa linker script cannot be preprocessed with -ansi because of
623 # preprocessor operations on strings that don't make C identifiers.
625 ifeq ($(CONFIG_XTENSA),)
629 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
635 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
636 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks)
638 # change __FILE__ to the relative path from the srctree
639 KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
642 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
643 # option to the assembler.
646 # Report stack usage if supported
647 # ARC tools based on GCC 7.1 has an issue with stack usage
648 # with naked functions, see commit message for more details
650 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
651 KBUILD_CFLAGS += -fstack-usage
655 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
656 ifeq ($(cc-name),clang)
657 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
658 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
659 KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
660 KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
661 KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
664 # turn jbsr into jsr for m68k
666 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
667 KBUILD_AFLAGS += -Wa,-gstabs,-S
671 # Prohibit date/time macros, which would make the build non-deterministic
672 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
674 include scripts/Makefile.extrawarn
676 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
677 KBUILD_CPPFLAGS += $(KCPPFLAGS)
678 KBUILD_AFLAGS += $(KAFLAGS)
679 KBUILD_CFLAGS += $(KCFLAGS)
681 # Use UBOOTINCLUDE when you must reference the include/ directory.
682 # Needed to be compatible with the O= option
685 $(if $(KBUILD_SRC), -I$(srctree)/include) \
686 $(if $(CONFIG_$(SPL_)SYS_THUMB_BUILD), \
687 $(if $(CONFIG_HAS_THUMB2),, \
688 -I$(srctree)/arch/$(ARCH)/thumb1/include),) \
689 -I$(srctree)/arch/$(ARCH)/include \
690 -include $(srctree)/include/linux/kconfig.h
692 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
693 CHECKFLAGS += $(NOSTDINC_FLAGS)
696 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
698 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
700 #########################################################################
701 # U-Boot objects....order is important (i.e. start must be first)
703 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
706 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
707 libs-$(CONFIG_OF_EMBED) += dts/
712 libs-y += drivers/dma/
713 libs-y += drivers/gpio/
714 libs-y += drivers/i2c/
715 libs-y += drivers/mtd/
716 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/raw/
717 libs-y += drivers/mtd/onenand/
718 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
719 libs-y += drivers/mtd/spi/
720 libs-y += drivers/net/
721 libs-y += drivers/net/phy/
722 libs-y += drivers/power/ \
723 drivers/power/domain/ \
724 drivers/power/fuel_gauge/ \
726 drivers/power/pmic/ \
727 drivers/power/battery/ \
728 drivers/power/regulator/
729 libs-y += drivers/spi/
730 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
731 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
732 libs-$(CONFIG_SYS_FSL_MMDC) += drivers/ddr/fsl/
733 libs-$(CONFIG_$(SPL_)ALTERA_SDRAM) += drivers/ddr/altera/
734 libs-y += drivers/serial/
735 libs-y += drivers/usb/dwc3/
736 libs-y += drivers/usb/common/
737 libs-y += drivers/usb/emul/
738 libs-y += drivers/usb/eth/
739 libs-$(CONFIG_USB_GADGET) += drivers/usb/gadget/
740 libs-$(CONFIG_USB_GADGET) += drivers/usb/gadget/udc/
741 libs-y += drivers/usb/host/
742 libs-y += drivers/usb/musb/
743 libs-y += drivers/usb/musb-new/
744 libs-y += drivers/usb/phy/
745 libs-y += drivers/usb/ulpi/
749 libs-$(CONFIG_API) += api/
750 libs-$(CONFIG_HAS_POST) += post/
751 libs-$(CONFIG_UNIT_TEST) += test/ test/dm/
752 libs-$(CONFIG_UT_ENV) += test/env/
753 libs-$(CONFIG_UT_OVERLAY) += test/overlay/
755 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
757 libs-y := $(sort $(libs-y))
759 u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
761 u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
763 libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
765 u-boot-init := $(head-y)
766 u-boot-main := $(libs-y)
770 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
771 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
773 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
775 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
777 ifdef CONFIG_CC_COVERAGE
778 KBUILD_CFLAGS += --coverage
779 PLATFORM_LIBGCC += -lgcov
783 export PLATFORM_LIBGCC
785 # Special flags for CPP when processing the linker script.
786 # Pass the version down so we can handle backwards compatibility
789 -include $(srctree)/include/u-boot/u-boot.lds.h \
791 $(shell $(LD) --version | \
792 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
794 #########################################################################
795 #########################################################################
797 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
798 BOARD_SIZE_CHECK= @ $(call size_check,$@,$(CONFIG_BOARD_SIZE_LIMIT))
803 ifneq ($(CONFIG_SPL_SIZE_LIMIT),0)
804 SPL_SIZE_CHECK = @$(call size_check,$@,$$(tools/spl_size_limit))
809 # Statically apply RELA-style relocations (currently arm64 only)
810 # This is useful for arm64 where static relocation needs to be performed on
811 # the raw binary, but certain simulators only accept an ELF file (but don't
812 # do the relocation).
813 ifneq ($(CONFIG_STATIC_RELA),)
814 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
816 start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
817 end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
818 tools/relocate-rela $(2) $(3) $$start $$end
823 # Always append ALL so that arch config.mk's can add custom ones
824 ALL-y += u-boot.srec u-boot.bin u-boot.sym System.map binary_size_check
826 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
827 ifeq ($(CONFIG_SPL_FSL_PBL),y)
828 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
830 ifneq ($(CONFIG_SECURE_BOOT), y)
831 # For Secure Boot The Image needs to be signed and Header must also
832 # be included. So The image has to be built explicitly
833 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
836 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
837 ifeq ($(CONFIG_MX6)$(CONFIG_IMX_HAB), yy)
838 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img
840 ifeq ($(CONFIG_MX7)$(CONFIG_IMX_HAB), yy)
841 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img
843 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
846 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
847 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb
848 ifeq ($(CONFIG_SPL_FRAMEWORK),y)
849 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
851 ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
852 ifneq ($(CONFIG_SPL_TARGET),)
853 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
855 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
856 ALL-$(CONFIG_EFI_APP) += u-boot-app.efi
857 ALL-$(CONFIG_EFI_STUB) += u-boot-payload.efi
859 ifneq ($(BUILD_ROM)$(CONFIG_BUILD_ROM),)
860 ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
863 # Build a combined spl + u-boot image for sunxi
864 ifeq ($(CONFIG_ARCH_SUNXI)$(CONFIG_SPL),yy)
865 ALL-y += u-boot-sunxi-with-spl.bin
868 # enable combined SPL/u-boot/dtb rules for tegra
869 ifeq ($(CONFIG_TEGRA)$(CONFIG_SPL),yy)
870 ALL-y += u-boot-tegra.bin u-boot-nodtb-tegra.bin
871 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb-tegra.bin
874 ALL-$(CONFIG_ARCH_MEDIATEK) += u-boot-mtk.bin
876 # Add optional build target if defined in board/cpu/soc headers
877 ifneq ($(CONFIG_BUILD_TARGET),)
878 ALL-y += $(CONFIG_BUILD_TARGET:"%"=%)
881 ifdef CONFIG_INIT_SP_RELATIVE
882 ALL-y += init_sp_bss_offset_check
885 ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
886 ALL-y += u-boot-with-dtb.bin
889 ifeq ($(CONFIG_ARCH_ROCKCHIP)$(CONFIG_SPL)$(CONFIG_TPL),yyy)
890 ALL-y += idbloader.img
893 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
895 # Avoid 'Not enough room for program headers' error on binutils 2.28 onwards.
896 LDFLAGS_u-boot += $(call ld-option, --no-dynamic-linker)
898 ifeq ($(CONFIG_ARC)$(CONFIG_NIOS2)$(CONFIG_X86)$(CONFIG_XTENSA),)
899 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
902 # Normally we fill empty space with 0xff
903 quiet_cmd_objcopy = OBJCOPY $@
904 cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \
905 $(OBJCOPYFLAGS_$(@F)) $< $@
907 # Provide a version which does not do this, for use by EFI
908 quiet_cmd_zobjcopy = OBJCOPY $@
909 cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
911 quiet_cmd_efipayload = OBJCOPY $@
912 cmd_efipayload = $(OBJCOPY) -I binary -O $(EFIPAYLOAD_BFDTARGET) -B $(EFIPAYLOAD_BFDARCH) $< $@
914 MKIMAGEOUTPUT ?= /dev/null
916 quiet_cmd_mkimage = MKIMAGE $@
917 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
918 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
920 quiet_cmd_mkfitimage = MKIMAGE $@
921 cmd_mkfitimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -f $(U_BOOT_ITS) -p $(CONFIG_FIT_EXTERNAL_OFFSET) $@\
922 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
924 quiet_cmd_cat = CAT $@
925 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
927 append = cat $(filter-out $< $(PHONY), $^) >> $@
929 quiet_cmd_pad_cat = CAT $@
930 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
934 quiet_cmd_cfgcheck = CFGCHK $2
935 cmd_cfgcheck = $(srctree)/scripts/check-config.sh $2 \
936 $(srctree)/scripts/config_whitelist.txt $(srctree)
939 ifeq ($(CONFIG_DEPRECATED),y)
940 $(warning "You have deprecated configuration options enabled in your .config! Please check your configuration.")
941 ifeq ($(CONFIG_SPI),y)
942 ifneq ($(CONFIG_DM_SPI)$(CONFIG_OF_CONTROL),yy)
943 $(warning "The relevant config item with associated code will remove in v2019.07 release.")
947 ifneq ($(CONFIG_DM),y)
948 @echo >&2 "===================== WARNING ======================"
949 @echo >&2 "This board does not use CONFIG_DM. CONFIG_DM will be"
950 @echo >&2 "compulsory starting with the v2020.01 release."
951 @echo >&2 "Failure to update may result in board removal."
952 @echo >&2 "See doc/driver-model/migration.rst for more info."
953 @echo >&2 "===================================================="
955 ifeq ($(CONFIG_MMC),y)
956 ifneq ($(CONFIG_DM_MMC)$(CONFIG_OF_CONTROL)$(CONFIG_BLK),yyy)
957 @echo >&2 "===================== WARNING ======================"
958 @echo >&2 "This board does not use CONFIG_DM_MMC. Please update"
959 @echo >&2 "the board to use CONFIG_DM_MMC before the v2019.04 release."
960 @echo >&2 "Failure to update by the deadline may result in board removal."
961 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
962 @echo >&2 "===================================================="
965 ifeq ($(CONFIG_USB),y)
966 ifneq ($(CONFIG_DM_USB)$(CONFIG_OF_CONTROL)$(CONFIG_BLK),yyy)
967 @echo >&2 "===================== WARNING ======================"
968 @echo >&2 "This board does not use CONFIG_DM_USB. Please update"
969 @echo >&2 "the board to use CONFIG_DM_USB before the v2019.07 release."
970 @echo >&2 "Failure to update by the deadline may result in board removal."
971 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
972 @echo >&2 "===================================================="
975 ifeq ($(CONFIG_MVSATA_IDE),y)
976 @echo >&2 "===================== WARNING ======================"
977 @echo >&2 "This board does use CONFIG_MVSATA_IDE which is not"
978 @echo >&2 "ported to driver-model (DM) yet. Please update the storage"
979 @echo >&2 "controller driver to use CONFIG_AHCI before the v2019.07"
981 @echo >&2 "Failure to update by the deadline may result in board removal."
982 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
983 @echo >&2 "===================================================="
985 ifeq ($(CONFIG_LIBATA),y)
986 ifneq ($(CONFIG_AHCI),y)
987 @echo >&2 "===================== WARNING ======================"
988 @echo >&2 "This board does use CONFIG_LIBATA but has CONFIG_AHCI not"
989 @echo >&2 "enabled. Please update the storage controller driver to use"
990 @echo >&2 "CONFIG_AHCI before the v2019.07 release."
991 @echo >&2 "Failure to update by the deadline may result in board removal."
992 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
993 @echo >&2 "===================================================="
996 ifeq ($(CONFIG_PCI),y)
997 ifneq ($(CONFIG_DM_PCI),y)
998 @echo >&2 "===================== WARNING ======================"
999 @echo >&2 "This board does not use CONFIG_DM_PCI Please update"
1000 @echo >&2 "the board to use CONFIG_DM_PCI before the v2019.07 release."
1001 @echo >&2 "Failure to update by the deadline may result in board removal."
1002 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
1003 @echo >&2 "===================================================="
1006 ifneq ($(CONFIG_LCD)$(CONFIG_VIDEO),)
1007 ifneq ($(CONFIG_DM_VIDEO),y)
1008 @echo >&2 "===================== WARNING ======================"
1009 @echo >&2 "This board does not use CONFIG_DM_VIDEO Please update"
1010 @echo >&2 "the board to use CONFIG_DM_VIDEO before the v2019.07 release."
1011 @echo >&2 "Failure to update by the deadline may result in board removal."
1012 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
1013 @echo >&2 "===================================================="
1016 ifeq ($(CONFIG_OF_EMBED),y)
1017 @echo >&2 "===================== WARNING ======================"
1018 @echo >&2 "CONFIG_OF_EMBED is enabled. This option should only"
1019 @echo >&2 "be used for debugging purposes. Please use"
1020 @echo >&2 "CONFIG_OF_SEPARATE for boards in mainline."
1021 @echo >&2 "See doc/README.fdt-control for more info."
1022 @echo >&2 "===================================================="
1024 ifeq ($(CONFIG_SPI_FLASH),y)
1025 ifneq ($(CONFIG_DM_SPI_FLASH)$(CONFIG_OF_CONTROL),yy)
1026 @echo >&2 "===================== WARNING ======================"
1027 @echo >&2 "This board does not use CONFIG_DM_SPI_FLASH. Please update"
1028 @echo >&2 "the board to use CONFIG_SPI_FLASH before the v2019.07 release."
1029 @echo >&2 "Failure to update by the deadline may result in board removal."
1030 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
1031 @echo >&2 "===================================================="
1034 ifneq ($(CONFIG_WATCHDOG)$(CONFIG_HW_WATCHDOG),)
1035 ifneq ($(CONFIG_WDT),y)
1036 @echo >&2 "===================== WARNING ======================"
1037 @echo >&2 "This board does not use CONFIG_WDT (DM watchdog support)."
1038 @echo >&2 "Please update the board to use CONFIG_WDT before the"
1039 @echo >&2 "v2019.10 release."
1040 @echo >&2 "Failure to update by the deadline may result in board removal."
1041 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
1042 @echo >&2 "===================================================="
1045 ifneq ($(CONFIG_NET),)
1046 ifneq ($(CONFIG_DM_ETH),y)
1047 @echo >&2 "===================== WARNING ======================"
1048 @echo >&2 "This board does not use CONFIG_DM_ETH (Driver Model"
1049 @echo >&2 "for Ethernet drivers). Please update the board to use"
1050 @echo >&2 "CONFIG_DM_ETH before the v2020.07 release. Failure to"
1051 @echo >&2 "update by the deadline may result in board removal."
1052 @echo >&2 "See doc/driver-model/migration.rst for more info."
1053 @echo >&2 "===================================================="
1056 @# Check that this build does not use CONFIG options that we do not
1057 @# know about unless they are in Kconfig. All the existing CONFIG
1058 @# options are whitelisted, so new ones should not be added.
1059 $(call cmd,cfgcheck,u-boot.cfg)
1065 $(Q)$(MAKE) $(build)=dts dtbs
1067 quiet_cmd_copy = COPY $@
1070 ifeq ($(CONFIG_MULTI_DTB_FIT),y)
1072 ifeq ($(CONFIG_MULTI_DTB_FIT_LZO),y)
1073 FINAL_DTB_CONTAINER = fit-dtb.blob.lzo
1074 else ifeq ($(CONFIG_MULTI_DTB_FIT_GZIP),y)
1075 FINAL_DTB_CONTAINER = fit-dtb.blob.gz
1077 FINAL_DTB_CONTAINER = fit-dtb.blob
1080 fit-dtb.blob.gz: fit-dtb.blob
1083 fit-dtb.blob.lzo: fit-dtb.blob
1086 fit-dtb.blob: dts/dt.dtb FORCE
1087 $(call if_changed,mkimage)
1088 ifneq ($(SOURCE_DATE_EPOCH),)
1089 touch -d @$(SOURCE_DATE_EPOCH) fit-dtb.blob
1090 chmod 0600 fit-dtb.blob
1093 MKIMAGEFLAGS_fit-dtb.blob = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
1095 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) -d /dev/null
1098 u-boot-fit-dtb.bin: u-boot-nodtb.bin $(EXT_DTB)
1099 $(call if_changed,cat)
1101 u-boot-fit-dtb.bin: u-boot-nodtb.bin $(FINAL_DTB_CONTAINER)
1102 $(call if_changed,cat)
1105 u-boot.bin: u-boot-fit-dtb.bin FORCE
1106 $(call if_changed,copy)
1108 u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE
1109 $(call if_changed,cat)
1111 else ifeq ($(CONFIG_OF_SEPARATE),y)
1112 u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE
1113 $(call if_changed,cat)
1115 u-boot.bin: u-boot-dtb.bin FORCE
1116 $(call if_changed,copy)
1118 u-boot.bin: u-boot-nodtb.bin FORCE
1119 $(call if_changed,copy)
1123 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1127 $(Q)$(MAKE) $(build)=arch/arm/cpu/armv7/vf610 $@
1129 quiet_cmd_copy = COPY $@
1132 u-boot.dtb: dts/dt.dtb
1135 OBJCOPYFLAGS_u-boot.hex := -O ihex
1137 OBJCOPYFLAGS_u-boot.srec := -O srec
1139 u-boot.hex u-boot.srec: u-boot FORCE
1140 $(call if_changed,objcopy)
1142 OBJCOPYFLAGS_u-boot-elf.srec := $(OBJCOPYFLAGS_u-boot.srec)
1144 u-boot-elf.srec: u-boot.elf FORCE
1145 $(call if_changed,objcopy)
1147 OBJCOPYFLAGS_u-boot-spl.srec = $(OBJCOPYFLAGS_u-boot.srec)
1149 spl/u-boot-spl.srec: spl/u-boot-spl FORCE
1150 $(call if_changed,objcopy)
1153 $(Q)$(MAKE) $(build)=arch/arm/mach-rmobile $@
1155 OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \
1156 $(if $(CONFIG_X86_16BIT_INIT),-R .start16 -R .resetvec) \
1157 $(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR),-R .bootpg -R .resetvec)
1159 OBJCOPYFLAGS_u-boot-spl.hex = $(OBJCOPYFLAGS_u-boot.hex)
1161 spl/u-boot-spl.hex: spl/u-boot-spl FORCE
1162 $(call if_changed,objcopy)
1164 binary_size_check: u-boot-nodtb.bin FORCE
1165 @file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \
1166 map_size=$(shell cat u-boot.map | \
1167 awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
1170 if [ "" != "$$map_size" ]; then \
1171 if test $$map_size -ne $$file_size; then \
1172 echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
1173 echo " but u-boot-nodtb.bin shows $$file_size" >&2 ; \
1178 ifdef CONFIG_INIT_SP_RELATIVE
1179 ifneq ($(CONFIG_SYS_MALLOC_F_LEN),)
1180 subtract_sys_malloc_f_len = space=$$(($${space} - $(CONFIG_SYS_MALLOC_F_LEN)))
1182 subtract_sys_malloc_f_len = true
1184 # The 1/4 margin below is somewhat arbitrary. The likely initial SP usage is
1185 # so low that the DTB could probably use 90%+ of the available space, for
1186 # current values of CONFIG_SYS_INIT_SP_BSS_OFFSET at least. However, let's be
1187 # safe for now and tweak this later if space becomes tight.
1188 # A rejected alternative would be to check that some absolute minimum stack
1189 # space was available. However, since CONFIG_SYS_INIT_SP_BSS_OFFSET is
1190 # deliberately build-specific, to take account of build-to-build stack usage
1191 # differences due to different feature sets, there is no common absolute value
1193 init_sp_bss_offset_check: u-boot.dtb FORCE
1194 @dtb_size=$(shell wc -c u-boot.dtb | awk '{print $$1}') ; \
1195 space=$(CONFIG_SYS_INIT_SP_BSS_OFFSET) ; \
1196 $(subtract_sys_malloc_f_len) ; \
1197 quarter_space=$$(($${space} / 4)) ; \
1198 if [ $${dtb_size} -gt $${quarter_space} ]; then \
1199 echo "u-boot.dtb is larger than 1 quarter of " >&2 ; \
1200 echo "(CONFIG_SYS_INIT_SP_BSS_OFFSET - CONFIG_SYS_MALLOC_F_LEN)" >&2 ; \
1205 u-boot-nodtb.bin: u-boot FORCE
1206 $(call if_changed,objcopy)
1207 $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
1212 $(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS)
1216 # ---------------------------------------------------------------------------
1217 # Use 'make BINMAN_DEBUG=1' to enable debugging
1218 quiet_cmd_binman = BINMAN $@
1219 cmd_binman = $(srctree)/tools/binman/binman $(if $(BINMAN_DEBUG),-D) \
1220 --toolpath $(objtree)/tools \
1221 $(if $(BINMAN_VERBOSE),-v$(BINMAN_VERBOSE)) \
1222 build -u -d u-boot.dtb -O . -m \
1223 -I . -I $(srctree) -I $(srctree)/board/$(BOARDDIR) \
1226 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
1228 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
1230 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
1231 $(call if_changed,objcopy)
1234 # U-Boot entry point, needed for booting of full-blown U-Boot
1235 # from the SPL U-Boot version.
1237 ifndef CONFIG_SYS_UBOOT_START
1238 CONFIG_SYS_UBOOT_START := 0
1241 # Boards with more complex image requirements can provide an .its source file
1242 # or a generator script
1243 ifneq ($(CONFIG_SPL_FIT_SOURCE),"")
1244 U_BOOT_ITS = $(subst ",,$(CONFIG_SPL_FIT_SOURCE))
1246 ifneq ($(CONFIG_SPL_FIT_GENERATOR),"")
1247 U_BOOT_ITS := u-boot.its
1248 ifeq ($(CONFIG_SPL_FIT_GENERATOR),"arch/arm/mach-imx/mkimage_fit_atf.sh")
1249 U_BOOT_ITS_DEPS += u-boot-nodtb.bin
1251 ifeq ($(CONFIG_SPL_FIT_GENERATOR),"arch/arm/mach-rockchip/make_fit_atf.py")
1252 U_BOOT_ITS_DEPS += u-boot
1254 $(U_BOOT_ITS): $(U_BOOT_ITS_DEPS) FORCE
1255 $(srctree)/$(CONFIG_SPL_FIT_GENERATOR) \
1256 $(patsubst %,arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) > $@
1260 ifdef CONFIG_SPL_LOAD_FIT
1261 MKIMAGEFLAGS_u-boot.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
1262 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1263 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \
1264 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST)))
1266 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
1267 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1268 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
1269 MKIMAGEFLAGS_u-boot-ivt.img = -A $(ARCH) -T firmware_ivt -C none -O u-boot \
1270 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1271 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
1272 u-boot-ivt.img: MKIMAGEOUTPUT = u-boot-ivt.img.log
1273 CLEAN_FILES += u-boot-ivt.img.log u-boot-dtb.imx.log SPL.log u-boot.imx.log
1276 MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
1278 MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
1279 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
1281 MKIMAGEFLAGS_u-boot-spl.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
1282 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \
1283 $(if $(KEYDIR),-k $(KEYDIR))
1285 MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1286 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
1288 ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
1289 UBOOT_BIN := u-boot-with-dtb.bin
1291 UBOOT_BIN := u-boot.bin
1294 u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl u-boot-ivt.img: \
1295 $(if $(CONFIG_SPL_LOAD_FIT),u-boot-nodtb.bin \
1296 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_OF_HOSTFILE),dts/dt.dtb) \
1297 ,$(UBOOT_BIN)) FORCE
1298 $(call if_changed,mkimage)
1301 ifeq ($(CONFIG_SPL_LOAD_FIT_FULL),y)
1302 MKIMAGEFLAGS_u-boot.itb =
1304 MKIMAGEFLAGS_u-boot.itb = -E
1307 u-boot.itb: u-boot-nodtb.bin \
1308 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_OF_HOSTFILE),dts/dt.dtb) \
1310 $(call if_changed,mkfitimage)
1313 u-boot-spl.kwb: u-boot.img spl/u-boot-spl.bin FORCE
1314 $(call if_changed,mkimage)
1316 u-boot.sha1: u-boot.bin
1317 tools/ubsha1 u-boot.bin
1320 $(OBJDUMP) -d $< > $@
1322 ifneq ($(CONFIG_SPL_PAYLOAD),)
1323 SPL_PAYLOAD := $(CONFIG_SPL_PAYLOAD:"%"=%)
1325 SPL_PAYLOAD := u-boot.bin
1328 SPL_IMAGE := $(CONFIG_SPL_IMAGE:"%"=%)
1330 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
1331 --pad-to=$(CONFIG_SPL_PAD_TO)
1332 u-boot-with-spl.bin: $(SPL_IMAGE) $(SPL_PAYLOAD) FORCE
1333 $(call if_changed,pad_cat)
1335 ifeq ($(CONFIG_ARCH_ROCKCHIP),y)
1336 MKIMAGEFLAGS_u-boot-tpl.img = -n $(CONFIG_SYS_SOC) -T rksd
1337 tpl/u-boot-tpl.img: tpl/u-boot-tpl.bin FORCE
1338 $(call if_changed,mkimage)
1339 idbloader.img: tpl/u-boot-tpl.img spl/u-boot-spl.bin FORCE
1340 $(call if_changed,cat)
1343 ifeq ($(CONFIG_ARCH_LPC32XX)$(CONFIG_SPL),yy)
1344 MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE)
1346 lpc32xx-spl.img: spl/u-boot-spl.bin FORCE
1347 $(call if_changed,mkimage)
1349 OBJCOPYFLAGS_lpc32xx-boot-0.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1351 lpc32xx-boot-0.bin: lpc32xx-spl.img FORCE
1352 $(call if_changed,objcopy)
1354 OBJCOPYFLAGS_lpc32xx-boot-1.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1356 lpc32xx-boot-1.bin: lpc32xx-spl.img FORCE
1357 $(call if_changed,objcopy)
1359 lpc32xx-full.bin: lpc32xx-boot-0.bin lpc32xx-boot-1.bin u-boot.img FORCE
1360 $(call if_changed,cat)
1362 CLEAN_FILES += lpc32xx-*
1365 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
1366 --pad-to=$(CONFIG_TPL_PAD_TO)
1367 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
1368 $(call if_changed,pad_cat)
1370 SPL: spl/u-boot-spl.bin FORCE
1371 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1373 ifeq ($(CONFIG_ARCH_IMX8M)$(CONFIG_ARCH_IMX8), y)
1374 ifeq ($(CONFIG_SPL_LOAD_IMX_CONTAINER), y)
1375 u-boot.cnt: u-boot.bin FORCE
1376 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1378 flash.bin: spl/u-boot-spl.bin u-boot.cnt FORCE
1379 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1381 flash.bin: spl/u-boot-spl.bin u-boot.itb FORCE
1382 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1386 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
1387 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1389 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
1391 u-boot.ubl: u-boot-with-spl.bin FORCE
1392 $(call if_changed,mkimage)
1394 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
1395 $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
1396 -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
1397 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
1398 $(call if_changed,mkimage)
1400 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1401 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
1402 $(call if_changed,pad_cat)
1404 u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
1405 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
1406 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
1407 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
1409 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
1410 # Both images are created using mkimage (crc etc), so that the ROM
1411 # bootloader can check its integrity. Padding needs to be done to the
1412 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
1413 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
1414 # The resulting image containing both U-Boot images is called u-boot.spr
1415 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
1416 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
1417 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
1418 $(call if_changed,mkimage)
1420 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1422 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
1423 $(call if_changed,pad_cat)
1425 ifneq ($(CONFIG_ARCH_SOCFPGA),)
1426 quiet_cmd_socboot = SOCBOOT $@
1427 cmd_socboot = cat spl/u-boot-spl.sfp spl/u-boot-spl.sfp \
1428 spl/u-boot-spl.sfp spl/u-boot-spl.sfp \
1429 u-boot.img > $@ || rm -f $@
1430 u-boot-with-spl.sfp: spl/u-boot-spl.sfp u-boot.img FORCE
1431 $(call if_changed,socboot)
1434 ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
1435 u-boot-with-dtb.bin: u-boot.bin u-boot.dtb \
1436 $(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR), u-boot-br.bin) FORCE
1437 $(call if_changed,binman)
1439 ifeq ($(CONFIG_MPC85XX_HAVE_RESET_VECTOR),y)
1440 OBJCOPYFLAGS_u-boot-br.bin := -O binary -j .bootpg -j .resetvec
1441 u-boot-br.bin: u-boot FORCE
1442 $(call if_changed,objcopy)
1446 # x86 uses a large ROM. We fill it with 0xff, put the 16-bit stuff (including
1447 # reset vector) at the top, Intel ME descriptor at the bottom, and U-Boot in
1448 # the middle. This is handled by binman based on an image description in the
1449 # board's device tree.
1450 ifneq ($(CONFIG_X86_RESET_VECTOR),)
1451 rom: u-boot.rom FORCE
1453 refcode.bin: $(srctree)/board/$(BOARDDIR)/refcode.bin FORCE
1454 $(call if_changed,copy)
1456 quiet_cmd_ldr = LD $@
1457 cmd_ldr = $(LD) $(LDFLAGS_$(@F)) \
1458 $(filter-out FORCE,$^) -o $@
1460 u-boot.rom: u-boot-x86-16bit.bin u-boot.bin \
1461 $(if $(CONFIG_SPL_X86_16BIT_INIT),spl/u-boot-spl.bin) \
1462 $(if $(CONFIG_TPL_X86_16BIT_INIT),tpl/u-boot-tpl.bin) \
1463 $(if $(CONFIG_HAVE_REFCODE),refcode.bin) FORCE
1464 $(call if_changed,binman)
1466 OBJCOPYFLAGS_u-boot-x86-16bit.bin := -O binary -j .start16 -j .resetvec
1467 u-boot-x86-16bit.bin: u-boot FORCE
1468 $(call if_changed,objcopy)
1471 ifneq ($(CONFIG_ARCH_SUNXI),)
1472 ifeq ($(CONFIG_ARM64),)
1473 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img u-boot.dtb FORCE
1474 $(call if_changed,binman)
1476 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.itb FORCE
1477 $(call if_changed,cat)
1481 ifneq ($(CONFIG_TEGRA),)
1482 ifneq ($(CONFIG_BINMAN),)
1483 # Makes u-boot-dtb-tegra.bin u-boot-tegra.bin u-boot-nodtb-tegra.bin
1484 %-dtb-tegra.bin %-tegra.bin %-nodtb-tegra.bin: \
1485 spl/%-spl %.bin FORCE
1486 $(call if_changed,binman)
1488 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1489 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot-nodtb.bin FORCE
1490 $(call if_changed,pad_cat)
1492 OBJCOPYFLAGS_u-boot-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1493 u-boot-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
1494 $(call if_changed,pad_cat)
1496 u-boot-dtb-tegra.bin: u-boot-tegra.bin FORCE
1497 $(call if_changed,copy)
1501 OBJCOPYFLAGS_u-boot-app.efi := $(OBJCOPYFLAGS_EFI)
1502 u-boot-app.efi: u-boot FORCE
1503 $(call if_changed,zobjcopy)
1505 u-boot.bin.o: u-boot.bin FORCE
1506 $(call if_changed,efipayload)
1508 u-boot-payload.lds: $(LDSCRIPT_EFI) FORCE
1509 $(call if_changed_dep,cpp_lds)
1511 # Rule to link the EFI payload which contains a stub and a U-Boot binary
1512 quiet_cmd_u-boot_payload ?= LD $@
1513 cmd_u-boot_payload ?= $(LD) $(LDFLAGS_EFI_PAYLOAD) -o $@ \
1514 -T u-boot-payload.lds arch/x86/cpu/call32.o \
1515 lib/efi/efi.o lib/efi/efi_stub.o u-boot.bin.o \
1516 $(addprefix arch/$(ARCH)/lib/,$(EFISTUB))
1518 u-boot-payload: u-boot.bin.o u-boot-payload.lds FORCE
1519 $(call if_changed,u-boot_payload)
1521 OBJCOPYFLAGS_u-boot-payload.efi := $(OBJCOPYFLAGS_EFI)
1522 u-boot-payload.efi: u-boot-payload FORCE
1523 $(call if_changed,zobjcopy)
1525 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
1526 $(call if_changed,cat)
1528 #Add a target to create boot binary having SPL binary in PBI format
1529 #concatenated with u-boot binary. It is need by PowerPC SoC having
1530 #internal SRAM <= 512KB.
1531 MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1532 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \
1533 -A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE)
1535 spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
1536 $(call if_changed,mkimage)
1539 UBOOT_BINLOAD := u-boot.img
1541 ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
1542 UBOOT_BINLOAD := u-boot-with-dtb.bin
1544 UBOOT_BINLOAD := u-boot.bin
1548 OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1551 u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE
1552 $(call if_changed,pad_cat)
1554 # PPC4xx needs the SPL at the end of the image, since the reset vector
1555 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
1556 # and need to introduce a new build target with the full blown U-Boot
1557 # at the start padded up to the start of the SPL image. And then concat
1558 # the SPL image to the end.
1560 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
1561 --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
1562 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
1563 $(call if_changed,pad_cat)
1565 # Create a new ELF from a raw binary file.
1566 ifndef PLATFORM_ELFENTRY
1567 PLATFORM_ELFENTRY = "_start"
1569 quiet_cmd_u-boot-elf ?= LD $@
1570 cmd_u-boot-elf ?= $(LD) u-boot-elf.o -o $@ \
1571 --defsym=$(PLATFORM_ELFENTRY)=$(CONFIG_SYS_TEXT_BASE) \
1572 -Ttext=$(CONFIG_SYS_TEXT_BASE)
1573 u-boot.elf: u-boot.bin
1574 $(Q)$(OBJCOPY) -I binary $(PLATFORM_ELFFLAGS) $< u-boot-elf.o
1575 $(call if_changed,u-boot-elf)
1577 # MediaTek's ARM-based u-boot needs a header to contains its load address
1578 # which is parsed by the BootROM.
1579 # If the SPL build is enabled, the header will be added to the spl binary,
1580 # and the spl binary and the u-boot.img will be combined into one file.
1581 # Otherwise the header will be added to the u-boot.bin directly.
1583 ifeq ($(CONFIG_SPL),y)
1584 spl/u-boot-spl-mtk.bin: spl/u-boot-spl
1586 u-boot-mtk.bin: u-boot.dtb u-boot.img spl/u-boot-spl-mtk.bin FORCE
1587 $(call if_changed,binman)
1589 MKIMAGEFLAGS_u-boot-mtk.bin = -T mtk_image \
1590 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \
1591 -n "$(patsubst "%",%,$(CONFIG_MTK_BROM_HEADER_INFO))"
1593 u-boot-mtk.bin: u-boot.bin FORCE
1594 $(call if_changed,mkimage)
1597 ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(ARCH)/Makefile.postlink)
1599 # Rule to link u-boot
1600 # May be overridden by arch/$(ARCH)/config.mk
1601 quiet_cmd_u-boot__ ?= LD $@
1602 cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
1603 -T u-boot.lds $(u-boot-init) \
1604 --start-group $(u-boot-main) --end-group \
1605 $(PLATFORM_LIBS) -Map u-boot.map; \
1606 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
1608 quiet_cmd_smap = GEN common/system_map.o
1610 smap=`$(call SYSTEM_MAP,u-boot) | \
1611 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
1612 $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
1613 -c $(srctree)/common/system_map.c -o common/system_map.o
1615 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds FORCE
1616 +$(call if_changed,u-boot__)
1617 ifeq ($(CONFIG_KALLSYMS),y)
1619 $(call cmd,u-boot__) common/system_map.o
1622 ifeq ($(CONFIG_RISCV),y)
1623 @tools/prelink-riscv $@ 0
1626 quiet_cmd_sym ?= SYM $@
1627 cmd_sym ?= $(OBJDUMP) -t $< > $@
1628 u-boot.sym: u-boot FORCE
1629 $(call if_changed,sym)
1631 # The actual objects are generated when descending,
1632 # make sure no implicit rule kicks in
1633 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
1635 # Handle descending into subdirectories listed in $(vmlinux-dirs)
1636 # Preset locale variables to speed up the build process. Limit locale
1637 # tweaks to this spot to avoid wrong language settings when running
1638 # make menuconfig etc.
1639 # Error messages still appears in the original language
1641 PHONY += $(u-boot-dirs)
1642 $(u-boot-dirs): prepare scripts
1643 $(Q)$(MAKE) $(build)=$@
1646 # The "tools" are needed early
1647 $(filter-out tools, $(u-boot-dirs)): tools
1648 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
1649 # is "yes"), so compile examples after U-Boot is compiled.
1650 examples: $(filter-out examples, $(u-boot-dirs))
1652 define filechk_uboot.release
1653 echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1656 # Store (new) UBOOTRELEASE string in include/config/uboot.release
1657 include/config/uboot.release: include/config/auto.conf FORCE
1658 $(call filechk,uboot.release)
1661 # Things we need to do before we recursively start building the kernel
1662 # or the modules are listed in "prepare".
1663 # A multi level approach is used. prepareN is processed before prepareN-1.
1664 # archprepare is used in arch Makefiles and when processed asm symlink,
1665 # version.h and scripts_basic is processed / created.
1667 # Listed in dependency order
1668 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1670 # prepare3 is used to check if we are building in a separate output directory,
1672 # 1) Check that make has not been executed in the kernel src $(srctree)
1673 prepare3: include/config/uboot.release
1674 ifneq ($(KBUILD_SRC),)
1675 @$(kecho) ' Using $(srctree) as source for U-Boot'
1676 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
1677 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
1678 echo >&2 " in the '$(srctree)' directory.";\
1683 # prepare2 creates a makefile if using a separate output directory
1684 prepare2: prepare3 outputmakefile cfg
1686 prepare1: prepare2 $(version_h) $(timestamp_h) \
1687 include/config/auto.conf
1688 ifeq ($(wildcard $(LDSCRIPT)),)
1689 @echo >&2 " Could not find linker script."
1693 ifeq ($(CONFIG_USE_DEFAULT_ENV_FILE),y)
1694 prepare1: $(defaultenv_h)
1697 archprepare: prepare1 scripts_basic
1699 prepare0: archprepare FORCE
1700 $(Q)$(MAKE) $(build)=.
1702 # All the preparing..
1705 # Generate some files
1706 # ---------------------------------------------------------------------------
1708 define filechk_version.h
1709 (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1710 echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1711 echo \#define CC_VERSION_STRING \"$$(LC_ALL=C $(CC) --version | head -n 1)\"; \
1712 echo \#define LD_VERSION_STRING \"$$(LC_ALL=C $(LD) --version | head -n 1)\"; )
1715 # The SOURCE_DATE_EPOCH mechanism requires a date that behaves like GNU date.
1716 # The BSD date on the other hand behaves different and would produce errors
1717 # with the misused '-d' switch. Respect that and search a working date with
1718 # well known pre- and suffixes for the GNU variant of date.
1719 define filechk_timestamp.h
1720 (if test -n "$${SOURCE_DATE_EPOCH}"; then \
1721 SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \
1723 for date in gdate date.gnu date; do \
1724 $${date} -u -d "$${SOURCE_DATE}" >/dev/null 2>&1 && DATE="$${date}"; \
1726 if test -n "$${DATE}"; then \
1727 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DATE "%b %d %C%y"'; \
1728 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TIME "%T"'; \
1729 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TZ "%z"'; \
1730 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1731 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \
1736 LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1737 LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \
1738 LC_ALL=C date +'#define U_BOOT_TZ "%z"'; \
1739 LC_ALL=C date +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1740 LC_ALL=C date +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \
1744 define filechk_defaultenv.h
1748 sed -e 's/\\\x0/\n/g' | \
1749 xxd -i ; echo ", 0x00" ; )
1752 $(version_h): include/config/uboot.release FORCE
1753 $(call filechk,version.h)
1755 $(timestamp_h): $(srctree)/Makefile FORCE
1756 $(call filechk,timestamp.h)
1758 $(defaultenv_h): $(CONFIG_DEFAULT_ENV_FILE:"%"=%) FORCE
1759 $(call filechk,defaultenv.h)
1761 # ---------------------------------------------------------------------------
1762 quiet_cmd_cpp_lds = LDS $@
1763 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) \
1764 -D__ASSEMBLY__ -x assembler-with-cpp -std=c99 -P -o $@ $<
1766 u-boot.lds: $(LDSCRIPT) prepare FORCE
1767 $(call if_changed_dep,cpp_lds)
1769 spl/u-boot-spl.bin: spl/u-boot-spl
1773 spl/u-boot-spl: tools prepare \
1774 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb) \
1775 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_TPL_OF_PLATDATA),dts/dt.dtb)
1776 $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all
1778 spl/sunxi-spl.bin: spl/u-boot-spl
1781 spl/sunxi-spl-with-ecc.bin: spl/sunxi-spl.bin
1784 spl/u-boot-spl.sfp: spl/u-boot-spl
1787 spl/boot.bin: spl/u-boot-spl
1790 tpl/u-boot-tpl.bin: tools prepare \
1791 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb)
1792 $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
1794 TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
1800 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1801 -name '*.[chS]' -print`
1805 etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1806 -name '*.[chS]' -print`
1808 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1814 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1817 @$(call SYSTEM_MAP,$<) > $@
1819 #########################################################################
1821 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1822 # R_AARCH64_RELATIVE (64-bit).
1823 checkarmreloc: u-boot
1824 @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1825 grep R_A | sort -u`"; \
1826 if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1827 "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1828 echo "$< contains unexpected relocations: $$RELOC"; \
1832 envtools: scripts_basic $(version_h) $(timestamp_h)
1833 $(Q)$(MAKE) $(build)=tools/env
1835 tools-only: export TOOLS_ONLY=y
1836 tools-only: scripts_basic $(version_h) $(timestamp_h)
1837 $(Q)$(MAKE) $(build)=tools
1839 tools-all: export HOST_TOOLS_ALL=y
1840 tools-all: envtools tools ;
1842 cross_tools: export CROSS_BUILD_TOOLS=y
1843 cross_tools: tools ;
1847 git log --no-merges U-Boot-1_1_5.. | \
1848 unexpand -a | sed -e 's/\s\s*$$//' > $@
1850 #########################################################################
1853 # Cleaning is done on three levels.
1854 # make clean Delete most generated files
1855 # Leave enough to build external modules
1856 # make mrproper Delete the current configuration, and all generated files
1857 # make distclean Remove editor backup files, patch leftover files and the like
1859 # Directories & files removed with 'make clean'
1860 CLEAN_DIRS += $(MODVERDIR) \
1861 $(foreach d, spl tpl, $(patsubst %,$d/%, \
1862 $(filter-out include, $(shell ls -1 $d 2>/dev/null))))
1864 CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h \
1865 boot* u-boot* MLO* SPL System.map fit-dtb.blob*
1867 # Directories & files removed with 'make mrproper'
1868 MRPROPER_DIRS += include/config include/generated spl tpl \
1870 MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \
1871 ctags etags tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1872 drivers/video/fonts/*.S
1874 # clean - Delete most, but leave enough to build external modules
1876 clean: rm-dirs := $(CLEAN_DIRS)
1877 clean: rm-files := $(CLEAN_FILES)
1879 clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
1881 clean-dirs := $(addprefix _clean_, $(clean-dirs))
1883 PHONY += $(clean-dirs) clean archclean
1885 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1887 clean: $(clean-dirs)
1890 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1891 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1892 -o -name '*.ko.*' -o -name '*.su' -o -name '*.pyc' \
1893 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1894 -o -name '*.lex.c' -o -name '*.tab.[ch]' \
1895 -o -name '*.symtypes' -o -name 'modules.order' \
1896 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1897 -o -name 'dsdt.aml' -o -name 'dsdt.asl.tmp' -o -name 'dsdt.c' \
1898 -o -name '*.efi' -o -name '*.gcno' -o -name '*.so' \) \
1899 -type f -print | xargs rm -f \
1900 bl31.c bl31.elf bl31_*.bin image.map tispl.bin*
1902 # mrproper - Delete all generated files, including .config
1904 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1905 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1906 mrproper-dirs := $(addprefix _mrproper_,scripts)
1908 PHONY += $(mrproper-dirs) mrproper archmrproper
1910 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1912 mrproper: clean $(mrproper-dirs)
1915 @rm -f arch/*/include/asm/arch
1922 @find $(srctree) $(RCS_FIND_IGNORE) \
1923 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1924 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1925 -o -name '.*.rej' -o -name '*%' -o -name 'core' \
1926 -o -name '*.pyc' \) \
1927 -type f -print | xargs rm -f
1928 @rm -f boards.cfg CHANGELOG
1931 F=`basename $(srctree)` ; cd .. ; \
1932 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1935 @echo 'Cleaning targets:'
1936 @echo ' clean - Remove most generated files but keep the config'
1937 @echo ' mrproper - Remove all generated files + config + various backup files'
1938 @echo ' distclean - mrproper + remove editor backup and patch files'
1940 @echo 'Configuration targets:'
1941 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1943 @echo 'Test targets:'
1945 @echo ' check - Run all automated tests that use sandbox'
1946 @echo ' qcheck - Run quick automated tests that use sandbox'
1948 @echo 'Other generic targets:'
1949 @echo ' all - Build all necessary images depending on configuration'
1950 @echo ' tests - Build U-Boot for sandbox and run tests'
1951 @echo '* u-boot - Build the bare u-boot'
1952 @echo ' dir/ - Build all files in dir and below'
1953 @echo ' dir/file.[oisS] - Build specified target only'
1954 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1955 @echo ' (requires a recent binutils and recent build (System.map))'
1956 @echo ' tags/ctags - Generate ctags file for editors'
1957 @echo ' etags - Generate etags file for editors'
1958 @echo ' cscope - Generate cscope index'
1959 @echo ' ubootrelease - Output the release version string (use with make -s)'
1960 @echo ' ubootversion - Output the version stored in Makefile (use with make -s)'
1961 @echo " cfg - Don't build, just create the .cfg files"
1962 @echo " envtools - Build only the target-side environment tools"
1964 @echo 'Static analysers'
1965 @echo ' checkstack - Generate a list of stack hogs'
1966 @echo ' coccicheck - Execute static code analysis with Coccinelle'
1968 @echo 'Documentation targets:'
1969 @$(MAKE) -f $(srctree)/doc/Makefile dochelp
1971 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1972 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1973 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1974 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1975 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1976 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1977 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1978 @echo ' 1: warnings which may be relevant and do not occur too often'
1979 @echo ' 2: warnings which occur quite often but may still be relevant'
1980 @echo ' 3: more obscure warnings, can most likely be ignored'
1981 @echo ' Multiple levels can be combined with W=12 or W=123'
1983 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1984 @echo 'For further info see the ./README file'
1990 $(srctree)/test/run quick
1992 # Documentation targets
1993 # ---------------------------------------------------------------------------
1994 DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \
1995 linkcheckdocs dochelp refcheckdocs
1996 PHONY += $(DOC_TARGETS)
1997 $(DOC_TARGETS): scripts_basic FORCE
1998 $(Q)$(MAKE) $(build)=doc $@
2000 endif #ifeq ($(config-targets),1)
2001 endif #ifeq ($(mixed-targets),1)
2003 PHONY += checkstack ubootrelease ubootversion
2006 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
2007 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
2010 @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
2013 @echo $(UBOOTVERSION)
2016 # ---------------------------------------------------------------------------
2017 # Single targets are compatible with:
2018 # - build with mixed source and output
2019 # - build with separate output dir 'make O=...'
2020 # - external modules
2022 # target-dir => where to store outputfile
2023 # build-dir => directory in kernel source tree to use
2025 ifeq ($(KBUILD_EXTMOD),)
2026 build-dir = $(patsubst %/,%,$(dir $@))
2027 target-dir = $(dir $@)
2029 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
2030 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
2031 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
2034 %.s: %.c prepare scripts FORCE
2035 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2036 %.i: %.c prepare scripts FORCE
2037 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2038 %.o: %.c prepare scripts FORCE
2039 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2040 %.lst: %.c prepare scripts FORCE
2041 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2042 %.s: %.S prepare scripts FORCE
2043 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2044 %.o: %.S prepare scripts FORCE
2045 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2046 %.symtypes: %.c prepare scripts FORCE
2047 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2050 /: prepare scripts FORCE
2052 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
2053 $(build)=$(build-dir)
2054 %/: prepare scripts FORCE
2056 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
2057 $(build)=$(build-dir)
2058 %.ko: prepare scripts FORCE
2060 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
2061 $(build)=$(build-dir) $(@:.ko=.o)
2062 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
2064 quiet_cmd_genenv = GENENV $@
2065 cmd_genenv = $(OBJCOPY) --dump-section .rodata.default_environment=$@ env/common.o; \
2066 sed --in-place -e 's/\x00/\x0A/g' $@
2068 u-boot-initial-env: u-boot.bin
2069 $(call if_changed,genenv)
2071 # Consistency checks
2072 # ---------------------------------------------------------------------------
2077 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
2079 # FIXME Should go into a make.lib or something
2080 # ===========================================================================
2082 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
2083 cmd_rmdirs = rm -rf $(rm-dirs)
2085 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
2086 cmd_rmfiles = rm -f $(rm-files)
2088 # read all saved command lines
2090 targets := $(wildcard $(sort $(targets)))
2091 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
2093 ifneq ($(cmd_files),)
2094 $(cmd_files): ; # Do not try to update included dependency files
2095 include $(cmd_files)
2098 endif # skip-makefile
2103 # Declare the contents of the .PHONY variable as phony. We keep that
2104 # information in a variable so we can use it in if_changed and friends.