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 ($(skip-makefile),)
159 # Do not print "Entering directory ...",
160 # but we want to display it when entering to the output directory
161 # so that IDEs/editors are able to understand relative filenames.
162 MAKEFLAGS += --no-print-directory
164 # Call a source code checker (by default, "sparse") as part of the
167 # Use 'make C=1' to enable checking of only re-compiled files.
168 # Use 'make C=2' to enable checking of *all* source files, regardless
169 # of whether they are re-compiled or not.
171 # See the file "Documentation/sparse.txt" for more details, including
172 # where to get the "sparse" utility.
174 ifeq ("$(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 # Snow Leopards build environment has no longer restrictions as described above
295 HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc")
296 HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp")
297 HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
299 # since Lion (10.7) ASLR is on by default, but we use linker generated lists
300 # in some host tools which is a problem then ... so disable ASLR for these
302 HOSTLDFLAGS += $(call os_x_before, 10, 7, "", "-Xlinker -no_pie")
305 # Decide whether to build built-in, modular, or both.
306 # Normally, just do built-in.
311 # If we have only "make modules", don't compile built-in objects.
312 # When we're building modules with modversions, we need to consider
313 # the built-in objects during the descend as well, in order to
314 # make sure the checksums are up to date before we record them.
316 ifeq ($(MAKECMDGOALS),modules)
317 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
320 # If we have "make <whatever> modules", compile modules
321 # in addition to whatever we do anyway.
322 # Just "make" or "make all" shall build modules as well
324 # U-Boot does not need modules
325 #ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
326 # KBUILD_MODULES := 1
329 #ifeq ($(MAKECMDGOALS),)
330 # KBUILD_MODULES := 1
333 export KBUILD_MODULES KBUILD_BUILTIN
334 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
336 # We need some generic definitions (do not try to remake the file).
337 scripts/Kbuild.include: ;
338 include scripts/Kbuild.include
340 # Make variables (CC, etc...)
342 AS = $(CROSS_COMPILE)as
344 ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
345 LD = $(CROSS_COMPILE)ld.bfd
347 LD = $(CROSS_COMPILE)ld
349 CC = $(CROSS_COMPILE)gcc
351 AR = $(CROSS_COMPILE)ar
352 NM = $(CROSS_COMPILE)nm
353 LDR = $(CROSS_COMPILE)ldr
354 STRIP = $(CROSS_COMPILE)strip
355 OBJCOPY = $(CROSS_COMPILE)objcopy
356 OBJDUMP = $(CROSS_COMPILE)objdump
364 DTC ?= $(objtree)/scripts/dtc/dtc
367 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
368 -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
370 KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__
372 KBUILD_CFLAGS := -Wall -Wstrict-prototypes \
373 -Wno-format-security \
374 -fno-builtin -ffreestanding $(CSTD_FLAG)
375 KBUILD_CFLAGS += -fshort-wchar
376 KBUILD_AFLAGS := -D__ASSEMBLY__
378 # Don't generate position independent code
379 KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
380 KBUILD_AFLAGS += $(call cc-option,-fno-PIE)
382 # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
383 UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
384 UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
386 export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
387 export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
388 export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
389 export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
390 export MAKE LEX YACC AWK PERL PYTHON PYTHON2 PYTHON3
391 export HOSTCXX HOSTCXXFLAGS CHECK CHECKFLAGS DTC DTC_FLAGS
393 export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
394 export KBUILD_CFLAGS KBUILD_AFLAGS
396 # When compiling out-of-tree modules, put MODVERDIR in the module
397 # tree rather than in the kernel tree. The kernel tree might
399 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
401 # Files to ignore in find ... statements
403 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
404 -name CVS -o -name .pc -o -name .hg -o -name .git \) \
406 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
407 --exclude CVS --exclude .pc --exclude .hg --exclude .git
409 # ===========================================================================
410 # Rules shared between *config targets and build targets
412 # Basic helpers built in scripts/
413 PHONY += scripts_basic
415 $(Q)$(MAKE) $(build)=scripts/basic
416 $(Q)rm -f .tmp_quiet_recordmcount
418 # To avoid any implicit rule to kick in, define an empty command.
419 scripts/basic/%: scripts_basic ;
421 PHONY += outputmakefile
422 # outputmakefile generates a Makefile in the output directory, if using a
423 # separate output directory. This allows convenient use of make in the
426 ifneq ($(KBUILD_SRC),)
427 $(Q)ln -fsn $(srctree) source
428 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
429 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
432 # To make sure we do not include .config for any of the *config targets
433 # catch them early, and hand them over to scripts/kconfig/Makefile
434 # It is allowed to specify more targets when calling make, including
435 # mixing *config targets and build targets.
436 # For example 'make oldconfig all'.
437 # Detect when mixed targets is specified, and make a second invocation
438 # of make so .config is not included in this case either (for *config).
440 version_h := include/generated/version_autogenerated.h
441 timestamp_h := include/generated/timestamp_autogenerated.h
442 defaultenv_h := include/generated/defaultenv_autogenerated.h
444 no-dot-config-targets := clean clobber mrproper distclean \
445 help %docs check% coccicheck \
446 ubootversion backup tests
452 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
453 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
458 ifeq ($(KBUILD_EXTMOD),)
459 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
461 ifneq ($(words $(MAKECMDGOALS)),1)
467 ifeq ($(mixed-targets),1)
468 # ===========================================================================
469 # We're called with mixed targets (*config and build targets).
470 # Handle them one by one.
472 PHONY += $(MAKECMDGOALS) __build_one_by_one
474 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
479 for i in $(MAKECMDGOALS); do \
480 $(MAKE) -f $(srctree)/Makefile $$i; \
484 ifeq ($(config-targets),1)
485 # ===========================================================================
486 # *config targets only - make sure prerequisites are updated, and descend
487 # in scripts/kconfig to make the *config target
489 KBUILD_DEFCONFIG := sandbox_defconfig
490 export KBUILD_DEFCONFIG KBUILD_KCONFIG
492 config: scripts_basic outputmakefile FORCE
493 $(Q)$(MAKE) $(build)=scripts/kconfig $@
495 %config: scripts_basic outputmakefile FORCE
496 $(Q)$(MAKE) $(build)=scripts/kconfig $@
499 # ===========================================================================
500 # Build targets only - this includes vmlinux, arch specific targets, clean
501 # targets and others. In general all targets except *config targets.
503 # Additional helpers built in scripts/
504 # Carefully list dependencies so we do not try to build scripts twice
507 scripts: scripts_basic include/config/auto.conf
508 $(Q)$(MAKE) $(build)=$(@)
510 ifeq ($(dot-config),1)
512 -include include/config/auto.conf
514 # Read in dependencies to all Kconfig* files, make sure to run
515 # oldconfig if changes are detected.
516 -include include/config/auto.conf.cmd
518 # To avoid any implicit rule to kick in, define an empty command
519 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
521 # If .config is newer than include/config/auto.conf, someone tinkered
522 # with it and forgot to run make oldconfig.
523 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
524 # we execute the config step to be sure to catch updated Kconfig files
525 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
526 $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig
527 @# If the following part fails, include/config/auto.conf should be
528 @# deleted so "make silentoldconfig" will be re-run on the next build.
529 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf || \
530 { rm -f include/config/auto.conf; false; }
531 @# include/config.h has been updated after "make silentoldconfig".
532 @# We need to touch include/config/auto.conf so it gets newer
533 @# than include/config.h.
534 @# Otherwise, 'make silentoldconfig' would be invoked twice.
535 $(Q)touch include/config/auto.conf
537 u-boot.cfg spl/u-boot.cfg tpl/u-boot.cfg: include/config.h FORCE
538 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf $(@)
540 -include include/autoconf.mk
541 -include include/autoconf.mk.dep
543 # We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf
544 # is up-to-date. When we switch to a different board configuration, old CONFIG
545 # macros are still remaining in include/config/auto.conf. Without the following
546 # gimmick, wrong config.mk would be included leading nasty warnings/errors.
547 ifneq ($(wildcard $(KCONFIG_CONFIG)),)
548 ifneq ($(wildcard include/config/auto.conf),)
549 autoconf_is_old := $(shell find . -path ./$(KCONFIG_CONFIG) -newer \
550 include/config/auto.conf)
551 ifeq ($(autoconf_is_old),)
553 include arch/$(ARCH)/Makefile
558 # These are set by the arch-specific config.mk. Make sure they are exported
559 # so they can be used when building an EFI application.
560 export EFI_LDS # Filename of EFI link script in arch/$(ARCH)/lib
561 export EFI_CRT0 # Filename of EFI CRT0 in arch/$(ARCH)/lib
562 export EFI_RELOC # Filename of EFU relocation code in arch/$(ARCH)/lib
563 export CFLAGS_EFI # Compiler flags to add when building EFI app
564 export CFLAGS_NON_EFI # Compiler flags to remove when building EFI app
565 export EFI_TARGET # binutils target if EFI is natively supported
567 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
568 # that (or fail if absent). Otherwise, search for a linker script in a
572 #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
573 ifdef CONFIG_SYS_LDSCRIPT
574 # need to strip off double quotes
575 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
579 # If there is no specified link script, we look in a number of places for it
581 ifeq ($(wildcard $(LDSCRIPT)),)
582 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
584 ifeq ($(wildcard $(LDSCRIPT)),)
585 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
587 ifeq ($(wildcard $(LDSCRIPT)),)
588 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
593 # Dummy target needed, because used as prerequisite
594 include/config/auto.conf: ;
595 endif # $(dot-config)
598 # Xtensa linker script cannot be preprocessed with -ansi because of
599 # preprocessor operations on strings that don't make C identifiers.
601 ifeq ($(CONFIG_XTENSA),)
605 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
611 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
612 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks)
614 # change __FILE__ to the relative path from the srctree
615 KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
618 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
619 # option to the assembler.
622 # Report stack usage if supported
623 # ARC tools based on GCC 7.1 has an issue with stack usage
624 # with naked functions, see commit message for more details
626 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
627 KBUILD_CFLAGS += -fstack-usage
631 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
632 ifeq ($(cc-name),clang)
633 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
634 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
635 KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
636 KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
637 KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
640 # turn jbsr into jsr for m68k
642 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
643 KBUILD_AFLAGS += -Wa,-gstabs,-S
647 # Prohibit date/time macros, which would make the build non-deterministic
648 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
650 include scripts/Makefile.extrawarn
652 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
653 KBUILD_CPPFLAGS += $(KCPPFLAGS)
654 KBUILD_AFLAGS += $(KAFLAGS)
655 KBUILD_CFLAGS += $(KCFLAGS)
657 # Use UBOOTINCLUDE when you must reference the include/ directory.
658 # Needed to be compatible with the O= option
661 $(if $(KBUILD_SRC), -I$(srctree)/include) \
662 $(if $(CONFIG_$(SPL_)SYS_THUMB_BUILD), \
663 $(if $(CONFIG_HAS_THUMB2),, \
664 -I$(srctree)/arch/$(ARCH)/thumb1/include),) \
665 -I$(srctree)/arch/$(ARCH)/include \
666 -include $(srctree)/include/linux/kconfig.h
668 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
669 CHECKFLAGS += $(NOSTDINC_FLAGS)
672 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
674 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
676 #########################################################################
677 # U-Boot objects....order is important (i.e. start must be first)
679 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
682 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
683 libs-$(CONFIG_OF_EMBED) += dts/
688 libs-y += drivers/dma/
689 libs-y += drivers/gpio/
690 libs-y += drivers/i2c/
691 libs-y += drivers/mtd/
692 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
693 libs-y += drivers/mtd/onenand/
694 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
695 libs-y += drivers/mtd/spi/
696 libs-y += drivers/net/
697 libs-y += drivers/net/phy/
698 libs-y += drivers/pci/
699 libs-y += drivers/power/ \
700 drivers/power/domain/ \
701 drivers/power/fuel_gauge/ \
703 drivers/power/pmic/ \
704 drivers/power/battery/ \
705 drivers/power/regulator/
706 libs-y += drivers/spi/
707 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
708 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
709 libs-$(CONFIG_SYS_FSL_MMDC) += drivers/ddr/fsl/
710 libs-$(CONFIG_ALTERA_SDRAM) += drivers/ddr/altera/
711 libs-y += drivers/serial/
712 libs-y += drivers/usb/dwc3/
713 libs-y += drivers/usb/common/
714 libs-y += drivers/usb/emul/
715 libs-y += drivers/usb/eth/
716 libs-y += drivers/usb/gadget/
717 libs-y += drivers/usb/gadget/udc/
718 libs-y += drivers/usb/host/
719 libs-y += drivers/usb/musb/
720 libs-y += drivers/usb/musb-new/
721 libs-y += drivers/usb/phy/
722 libs-y += drivers/usb/ulpi/
726 libs-$(CONFIG_API) += api/
727 libs-$(CONFIG_HAS_POST) += post/
730 libs-$(CONFIG_UT_ENV) += test/env/
731 libs-$(CONFIG_UT_OVERLAY) += test/overlay/
733 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
735 libs-y := $(sort $(libs-y))
737 u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
739 u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
741 libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
743 u-boot-init := $(head-y)
744 u-boot-main := $(libs-y)
748 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
749 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
751 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
753 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
755 ifdef CONFIG_CC_COVERAGE
756 KBUILD_CFLAGS += --coverage
757 PLATFORM_LIBGCC += -lgcov
761 export PLATFORM_LIBGCC
763 # Special flags for CPP when processing the linker script.
764 # Pass the version down so we can handle backwards compatibility
767 -include $(srctree)/include/u-boot/u-boot.lds.h \
769 $(shell $(LD) --version | \
770 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
772 #########################################################################
773 #########################################################################
775 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
777 @actual=`wc -c $@ | awk '{print $$1}'`; \
778 limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
779 if test $$actual -gt $$limit; then \
780 echo "$@ exceeds file size limit:" >&2 ; \
781 echo " limit: $$limit bytes" >&2 ; \
782 echo " actual: $$actual bytes" >&2 ; \
783 echo " excess: $$((actual - limit)) bytes" >&2; \
790 # Statically apply RELA-style relocations (currently arm64 only)
791 # This is useful for arm64 where static relocation needs to be performed on
792 # the raw binary, but certain simulators only accept an ELF file (but don't
793 # do the relocation).
794 ifneq ($(CONFIG_STATIC_RELA),)
795 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
797 start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
798 end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
799 tools/relocate-rela $(2) $(3) $$start $$end
804 # Always append ALL so that arch config.mk's can add custom ones
805 ALL-y += u-boot.srec u-boot.bin u-boot.sym System.map binary_size_check
807 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
808 ifeq ($(CONFIG_SPL_FSL_PBL),y)
809 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
811 ifneq ($(CONFIG_SECURE_BOOT), y)
812 # For Secure Boot The Image needs to be signed and Header must also
813 # be included. So The image has to be built explicitly
814 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
817 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
818 ifeq ($(CONFIG_MX6)$(CONFIG_SECURE_BOOT), yy)
819 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img
821 ifeq ($(CONFIG_MX7)$(CONFIG_SECURE_BOOT), yy)
822 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img
824 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
827 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
828 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb
829 ifeq ($(CONFIG_SPL_FRAMEWORK),y)
830 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
832 ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
833 ifneq ($(CONFIG_SPL_TARGET),)
834 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
836 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
837 ALL-$(CONFIG_EFI_APP) += u-boot-app.efi
838 ALL-$(CONFIG_EFI_STUB) += u-boot-payload.efi
840 ifneq ($(BUILD_ROM)$(CONFIG_BUILD_ROM),)
841 ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
844 # Build a combined spl + u-boot image for sunxi
845 ifeq ($(CONFIG_ARCH_SUNXI)$(CONFIG_SPL),yy)
846 ALL-y += u-boot-sunxi-with-spl.bin
849 # enable combined SPL/u-boot/dtb rules for tegra
850 ifeq ($(CONFIG_TEGRA)$(CONFIG_SPL),yy)
851 ALL-y += u-boot-tegra.bin u-boot-nodtb-tegra.bin
852 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb-tegra.bin
855 # Add optional build target if defined in board/cpu/soc headers
856 ifneq ($(CONFIG_BUILD_TARGET),)
857 ALL-y += $(CONFIG_BUILD_TARGET:"%"=%)
860 ifneq ($(CONFIG_SYS_INIT_SP_BSS_OFFSET),)
861 ALL-y += init_sp_bss_offset_check
864 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
866 # Avoid 'Not enough room for program headers' error on binutils 2.28 onwards.
867 LDFLAGS_u-boot += $(call ld-option, --no-dynamic-linker)
869 ifeq ($(CONFIG_ARC)$(CONFIG_NIOS2)$(CONFIG_X86)$(CONFIG_XTENSA),)
870 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
873 # Normally we fill empty space with 0xff
874 quiet_cmd_objcopy = OBJCOPY $@
875 cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \
876 $(OBJCOPYFLAGS_$(@F)) $< $@
878 # Provide a version which does not do this, for use by EFI
879 quiet_cmd_zobjcopy = OBJCOPY $@
880 cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
882 quiet_cmd_efipayload = OBJCOPY $@
883 cmd_efipayload = $(OBJCOPY) -I binary -O $(EFIPAYLOAD_BFDTARGET) -B $(EFIPAYLOAD_BFDARCH) $< $@
885 MKIMAGEOUTPUT ?= /dev/null
887 quiet_cmd_mkimage = MKIMAGE $@
888 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
889 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
891 quiet_cmd_mkfitimage = MKIMAGE $@
892 cmd_mkfitimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -f $(U_BOOT_ITS) -E $@ \
893 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
895 quiet_cmd_cat = CAT $@
896 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
898 append = cat $(filter-out $< $(PHONY), $^) >> $@
900 quiet_cmd_pad_cat = CAT $@
901 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
905 quiet_cmd_cfgcheck = CFGCHK $2
906 cmd_cfgcheck = $(srctree)/scripts/check-config.sh $2 \
907 $(srctree)/scripts/config_whitelist.txt $(srctree)
910 ifeq ($(CONFIG_DM_I2C_COMPAT)$(CONFIG_SANDBOX),y)
911 @echo "===================== WARNING ======================"
912 @echo "This board uses CONFIG_DM_I2C_COMPAT. Please remove"
913 @echo "(possibly in a subsequent patch in your series)"
914 @echo "before sending patches to the mailing list."
915 @echo "===================================================="
917 @# Check that this build does not use CONFIG options that we do not
918 @# know about unless they are in Kconfig. All the existing CONFIG
919 @# options are whitelisted, so new ones should not be added.
920 $(call cmd,cfgcheck,u-boot.cfg)
926 $(Q)$(MAKE) $(build)=dts dtbs
928 quiet_cmd_copy = COPY $@
931 ifeq ($(CONFIG_MULTI_DTB_FIT),y)
933 fit-dtb.blob: dts/dt.dtb FORCE
934 $(call if_changed,mkimage)
936 MKIMAGEFLAGS_fit-dtb.blob = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
938 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) -d /dev/null
940 u-boot-fit-dtb.bin: u-boot-nodtb.bin fit-dtb.blob
941 $(call if_changed,cat)
943 u-boot.bin: u-boot-fit-dtb.bin FORCE
944 $(call if_changed,copy)
945 else ifeq ($(CONFIG_OF_SEPARATE),y)
946 u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE
947 $(call if_changed,cat)
949 u-boot.bin: u-boot-dtb.bin FORCE
950 $(call if_changed,copy)
952 u-boot.bin: u-boot-nodtb.bin FORCE
953 $(call if_changed,copy)
957 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
960 $(Q)$(MAKE) $(build)=arch/arm/cpu/armv7/vf610 $@
962 quiet_cmd_copy = COPY $@
965 u-boot.dtb: dts/dt.dtb
968 OBJCOPYFLAGS_u-boot.hex := -O ihex
970 OBJCOPYFLAGS_u-boot.srec := -O srec
972 u-boot.hex u-boot.srec: u-boot FORCE
973 $(call if_changed,objcopy)
975 OBJCOPYFLAGS_u-boot-elf.srec := $(OBJCOPYFLAGS_u-boot.srec)
977 u-boot-elf.srec: u-boot.elf FORCE
978 $(call if_changed,objcopy)
980 OBJCOPYFLAGS_u-boot-spl.srec = $(OBJCOPYFLAGS_u-boot.srec)
982 spl/u-boot-spl.srec: spl/u-boot-spl FORCE
983 $(call if_changed,objcopy)
985 OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \
986 $(if $(CONFIG_X86_16BIT_INIT),-R .start16 -R .resetvec)
988 binary_size_check: u-boot-nodtb.bin FORCE
989 @file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \
990 map_size=$(shell cat u-boot.map | \
991 awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
994 if [ "" != "$$map_size" ]; then \
995 if test $$map_size -ne $$file_size; then \
996 echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
997 echo " but u-boot-nodtb.bin shows $$file_size" >&2 ; \
1002 ifneq ($(CONFIG_SYS_INIT_SP_BSS_OFFSET),)
1003 ifneq ($(CONFIG_SYS_MALLOC_F_LEN),)
1004 subtract_sys_malloc_f_len = space=$$(($${space} - $(CONFIG_SYS_MALLOC_F_LEN)))
1006 subtract_sys_malloc_f_len = true
1008 # The 1/4 margin below is somewhat arbitrary. The likely initial SP usage is
1009 # so low that the DTB could probably use 90%+ of the available space, for
1010 # current values of CONFIG_SYS_INIT_SP_BSS_OFFSET at least. However, let's be
1011 # safe for now and tweak this later if space becomes tight.
1012 # A rejected alternative would be to check that some absolute minimum stack
1013 # space was available. However, since CONFIG_SYS_INIT_SP_BSS_OFFSET is
1014 # deliberately build-specific, to take account of build-to-build stack usage
1015 # differences due to different feature sets, there is no common absolute value
1017 init_sp_bss_offset_check: u-boot.dtb FORCE
1018 @dtb_size=$(shell wc -c u-boot.dtb | awk '{print $$1}') ; \
1019 space=$(CONFIG_SYS_INIT_SP_BSS_OFFSET) ; \
1020 $(subtract_sys_malloc_f_len) ; \
1021 quarter_space=$$(($${space} / 4)) ; \
1022 if [ $${dtb_size} -gt $${quarter_space} ]; then \
1023 echo "u-boot.dtb is larger than 1 quarter of " >&2 ; \
1024 echo "(CONFIG_SYS_INIT_SP_BSS_OFFSET - CONFIG_SYS_MALLOC_F_LEN)" >&2 ; \
1029 u-boot-nodtb.bin: u-boot FORCE
1030 $(call if_changed,objcopy)
1031 $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
1036 $(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS)
1040 # ---------------------------------------------------------------------------
1041 quiet_cmd_binman = BINMAN $@
1042 cmd_binman = $(srctree)/tools/binman/binman -d u-boot.dtb -O . \
1043 -I . -I $(srctree)/board/$(BOARDDIR) $<
1045 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
1047 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
1049 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
1050 $(call if_changed,objcopy)
1053 # U-Boot entry point, needed for booting of full-blown U-Boot
1054 # from the SPL U-Boot version.
1056 ifndef CONFIG_SYS_UBOOT_START
1057 CONFIG_SYS_UBOOT_START := 0
1060 # Boards with more complex image requirments can provide an .its source file
1061 # or a generator script
1062 ifneq ($(CONFIG_SPL_FIT_SOURCE),"")
1063 U_BOOT_ITS = $(subst ",,$(CONFIG_SPL_FIT_SOURCE))
1065 ifneq ($(CONFIG_SPL_FIT_GENERATOR),"")
1066 U_BOOT_ITS := u-boot.its
1067 $(U_BOOT_ITS): FORCE
1068 $(srctree)/$(CONFIG_SPL_FIT_GENERATOR) \
1069 $(patsubst %,arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) > $@
1073 ifdef CONFIG_SPL_LOAD_FIT
1074 MKIMAGEFLAGS_u-boot.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
1075 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1076 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \
1077 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST)))
1079 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
1080 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1081 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
1082 MKIMAGEFLAGS_u-boot-ivt.img = -A $(ARCH) -T firmware_ivt -C none -O u-boot \
1083 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1084 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
1085 u-boot-ivt.img: MKIMAGEOUTPUT = u-boot-ivt.img.log
1086 CLEAN_FILES += u-boot-ivt.img.log u-boot-dtb.imx.log SPL.log u-boot.imx.log
1089 MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
1091 MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
1092 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
1094 MKIMAGEFLAGS_u-boot-spl.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
1095 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \
1096 $(if $(KEYDIR),-k $(KEYDIR))
1098 MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1099 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
1101 u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl u-boot-ivt.img: \
1102 $(if $(CONFIG_SPL_LOAD_FIT),u-boot-nodtb.bin dts/dt.dtb,u-boot.bin) FORCE
1103 $(call if_changed,mkimage)
1105 u-boot.itb: u-boot-nodtb.bin dts/dt.dtb $(U_BOOT_ITS) FORCE
1106 $(call if_changed,mkfitimage)
1109 u-boot-spl.kwb: u-boot.img spl/u-boot-spl.bin FORCE
1110 $(call if_changed,mkimage)
1112 u-boot.sha1: u-boot.bin
1113 tools/ubsha1 u-boot.bin
1116 $(OBJDUMP) -d $< > $@
1118 ifneq ($(CONFIG_SPL_PAYLOAD),)
1119 SPL_PAYLOAD := $(CONFIG_SPL_PAYLOAD:"%"=%)
1121 SPL_PAYLOAD := u-boot.bin
1124 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
1125 --pad-to=$(CONFIG_SPL_PAD_TO)
1126 u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
1127 $(call if_changed,pad_cat)
1129 MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE)
1131 lpc32xx-spl.img: spl/u-boot-spl.bin FORCE
1132 $(call if_changed,mkimage)
1134 OBJCOPYFLAGS_lpc32xx-boot-0.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1136 lpc32xx-boot-0.bin: lpc32xx-spl.img FORCE
1137 $(call if_changed,objcopy)
1139 OBJCOPYFLAGS_lpc32xx-boot-1.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1141 lpc32xx-boot-1.bin: lpc32xx-spl.img FORCE
1142 $(call if_changed,objcopy)
1144 lpc32xx-full.bin: lpc32xx-boot-0.bin lpc32xx-boot-1.bin u-boot.img FORCE
1145 $(call if_changed,cat)
1147 CLEAN_FILES += lpc32xx-*
1149 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
1150 --pad-to=$(CONFIG_TPL_PAD_TO)
1151 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
1152 $(call if_changed,pad_cat)
1154 SPL: spl/u-boot-spl.bin FORCE
1155 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1157 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
1158 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1160 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
1162 u-boot.ubl: u-boot-with-spl.bin FORCE
1163 $(call if_changed,mkimage)
1165 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
1166 $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
1167 -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
1168 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
1169 $(call if_changed,mkimage)
1171 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1172 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
1173 $(call if_changed,pad_cat)
1175 u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
1176 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
1177 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
1178 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
1180 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
1181 # Both images are created using mkimage (crc etc), so that the ROM
1182 # bootloader can check its integrity. Padding needs to be done to the
1183 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
1184 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
1185 # The resulting image containing both U-Boot images is called u-boot.spr
1186 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
1187 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
1188 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
1189 $(call if_changed,mkimage)
1191 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1193 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
1194 $(call if_changed,pad_cat)
1196 ifneq ($(CONFIG_ARCH_SOCFPGA),)
1197 quiet_cmd_socboot = SOCBOOT $@
1198 cmd_socboot = cat spl/u-boot-spl.sfp spl/u-boot-spl.sfp \
1199 spl/u-boot-spl.sfp spl/u-boot-spl.sfp \
1200 u-boot.img > $@ || rm -f $@
1201 u-boot-with-spl.sfp: spl/u-boot-spl.sfp u-boot.img FORCE
1202 $(call if_changed,socboot)
1205 # x86 uses a large ROM. We fill it with 0xff, put the 16-bit stuff (including
1206 # reset vector) at the top, Intel ME descriptor at the bottom, and U-Boot in
1207 # the middle. This is handled by binman based on an image description in the
1208 # board's device tree.
1209 ifneq ($(CONFIG_X86_RESET_VECTOR),)
1210 rom: u-boot.rom FORCE
1212 refcode.bin: $(srctree)/board/$(BOARDDIR)/refcode.bin FORCE
1213 $(call if_changed,copy)
1215 quiet_cmd_ldr = LD $@
1216 cmd_ldr = $(LD) $(LDFLAGS_$(@F)) \
1217 $(filter-out FORCE,$^) -o $@
1219 u-boot.rom: u-boot-x86-16bit.bin u-boot.bin \
1220 $(if $(CONFIG_SPL_X86_16BIT_INIT),spl/u-boot-spl.bin) \
1221 $(if $(CONFIG_HAVE_REFCODE),refcode.bin) FORCE
1222 $(call if_changed,binman)
1224 OBJCOPYFLAGS_u-boot-x86-16bit.bin := -O binary -j .start16 -j .resetvec
1225 u-boot-x86-16bit.bin: u-boot FORCE
1226 $(call if_changed,objcopy)
1229 ifneq ($(CONFIG_ARCH_SUNXI),)
1230 ifeq ($(CONFIG_ARM64),)
1231 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img u-boot.dtb FORCE
1232 $(call if_changed,binman)
1234 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.itb FORCE
1235 $(call if_changed,cat)
1239 ifneq ($(CONFIG_TEGRA),)
1240 ifneq ($(CONFIG_BINMAN),)
1241 # Makes u-boot-dtb-tegra.bin u-boot-tegra.bin u-boot-nodtb-tegra.bin
1242 %-dtb-tegra.bin %-tegra.bin %-nodtb-tegra.bin: \
1243 spl/%-spl %.bin FORCE
1244 $(call if_changed,binman)
1246 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1247 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot-nodtb.bin FORCE
1248 $(call if_changed,pad_cat)
1250 OBJCOPYFLAGS_u-boot-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1251 u-boot-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
1252 $(call if_changed,pad_cat)
1254 u-boot-dtb-tegra.bin: u-boot-tegra.bin FORCE
1255 $(call if_changed,copy)
1259 OBJCOPYFLAGS_u-boot-app.efi := $(OBJCOPYFLAGS_EFI)
1260 u-boot-app.efi: u-boot FORCE
1261 $(call if_changed,zobjcopy)
1263 u-boot.bin.o: u-boot.bin FORCE
1264 $(call if_changed,efipayload)
1266 u-boot-payload.lds: $(LDSCRIPT_EFI) FORCE
1267 $(call if_changed_dep,cpp_lds)
1269 # Rule to link the EFI payload which contains a stub and a U-Boot binary
1270 quiet_cmd_u-boot_payload ?= LD $@
1271 cmd_u-boot_payload ?= $(LD) $(LDFLAGS_EFI_PAYLOAD) -o $@ \
1272 -T u-boot-payload.lds arch/x86/cpu/call32.o \
1273 lib/efi/efi.o lib/efi/efi_stub.o u-boot.bin.o \
1274 $(addprefix arch/$(ARCH)/lib/,$(EFISTUB))
1276 u-boot-payload: u-boot.bin.o u-boot-payload.lds FORCE
1277 $(call if_changed,u-boot_payload)
1279 OBJCOPYFLAGS_u-boot-payload.efi := $(OBJCOPYFLAGS_EFI)
1280 u-boot-payload.efi: u-boot-payload FORCE
1281 $(call if_changed,zobjcopy)
1283 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
1284 $(call if_changed,cat)
1286 #Add a target to create boot binary having SPL binary in PBI format
1287 #concatenated with u-boot binary. It is need by PowerPC SoC having
1288 #internal SRAM <= 512KB.
1289 MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1290 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \
1291 -A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE)
1293 spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
1294 $(call if_changed,mkimage)
1297 UBOOT_BINLOAD := u-boot.img
1299 UBOOT_BINLOAD := u-boot.bin
1302 OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1305 u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE
1306 $(call if_changed,pad_cat)
1308 # PPC4xx needs the SPL at the end of the image, since the reset vector
1309 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
1310 # and need to introduce a new build target with the full blown U-Boot
1311 # at the start padded up to the start of the SPL image. And then concat
1312 # the SPL image to the end.
1314 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
1315 --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
1316 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
1317 $(call if_changed,pad_cat)
1319 # Create a new ELF from a raw binary file.
1320 ifndef PLATFORM_ELFENTRY
1321 PLATFORM_ELFENTRY = "_start"
1323 quiet_cmd_u-boot-elf ?= LD $@
1324 cmd_u-boot-elf ?= $(LD) u-boot-elf.o -o $@ \
1325 --defsym=$(PLATFORM_ELFENTRY)=$(CONFIG_SYS_TEXT_BASE) \
1326 -Ttext=$(CONFIG_SYS_TEXT_BASE)
1327 u-boot.elf: u-boot.bin
1328 $(Q)$(OBJCOPY) -I binary $(PLATFORM_ELFFLAGS) $< u-boot-elf.o
1329 $(call if_changed,u-boot-elf)
1331 ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(ARCH)/Makefile.postlink)
1333 # Rule to link u-boot
1334 # May be overridden by arch/$(ARCH)/config.mk
1335 quiet_cmd_u-boot__ ?= LD $@
1336 cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
1337 -T u-boot.lds $(u-boot-init) \
1338 --start-group $(u-boot-main) --end-group \
1339 $(PLATFORM_LIBS) -Map u-boot.map; \
1340 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
1342 quiet_cmd_smap = GEN common/system_map.o
1344 smap=`$(call SYSTEM_MAP,u-boot) | \
1345 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
1346 $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
1347 -c $(srctree)/common/system_map.c -o common/system_map.o
1349 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds FORCE
1350 +$(call if_changed,u-boot__)
1351 ifeq ($(CONFIG_KALLSYMS),y)
1353 $(call cmd,u-boot__) common/system_map.o
1356 ifeq ($(CONFIG_RISCV),y)
1357 @tools/prelink-riscv $@ 0
1360 quiet_cmd_sym ?= SYM $@
1361 cmd_sym ?= $(OBJDUMP) -t $< > $@
1362 u-boot.sym: u-boot FORCE
1363 $(call if_changed,sym)
1365 # The actual objects are generated when descending,
1366 # make sure no implicit rule kicks in
1367 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
1369 # Handle descending into subdirectories listed in $(vmlinux-dirs)
1370 # Preset locale variables to speed up the build process. Limit locale
1371 # tweaks to this spot to avoid wrong language settings when running
1372 # make menuconfig etc.
1373 # Error messages still appears in the original language
1375 PHONY += $(u-boot-dirs)
1376 $(u-boot-dirs): prepare scripts
1377 $(Q)$(MAKE) $(build)=$@
1380 # The "tools" are needed early
1381 $(filter-out tools, $(u-boot-dirs)): tools
1382 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
1383 # is "yes"), so compile examples after U-Boot is compiled.
1384 examples: $(filter-out examples, $(u-boot-dirs))
1386 define filechk_uboot.release
1387 echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1390 # Store (new) UBOOTRELEASE string in include/config/uboot.release
1391 include/config/uboot.release: include/config/auto.conf FORCE
1392 $(call filechk,uboot.release)
1395 # Things we need to do before we recursively start building the kernel
1396 # or the modules are listed in "prepare".
1397 # A multi level approach is used. prepareN is processed before prepareN-1.
1398 # archprepare is used in arch Makefiles and when processed asm symlink,
1399 # version.h and scripts_basic is processed / created.
1401 # Listed in dependency order
1402 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1404 # prepare3 is used to check if we are building in a separate output directory,
1406 # 1) Check that make has not been executed in the kernel src $(srctree)
1407 prepare3: include/config/uboot.release
1408 ifneq ($(KBUILD_SRC),)
1409 @$(kecho) ' Using $(srctree) as source for U-Boot'
1410 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
1411 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
1412 echo >&2 " in the '$(srctree)' directory.";\
1417 # prepare2 creates a makefile if using a separate output directory
1418 prepare2: prepare3 outputmakefile
1420 prepare1: prepare2 $(version_h) $(timestamp_h) \
1421 include/config/auto.conf
1422 ifeq ($(wildcard $(LDSCRIPT)),)
1423 @echo >&2 " Could not find linker script."
1427 ifeq ($(CONFIG_USE_DEFAULT_ENV_FILE),y)
1428 prepare1: $(defaultenv_h)
1431 archprepare: prepare1 scripts_basic
1433 prepare0: archprepare FORCE
1434 $(Q)$(MAKE) $(build)=.
1436 # All the preparing..
1439 # Generate some files
1440 # ---------------------------------------------------------------------------
1442 define filechk_version.h
1443 (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1444 echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1445 echo \#define CC_VERSION_STRING \"$$(LC_ALL=C $(CC) --version | head -n 1)\"; \
1446 echo \#define LD_VERSION_STRING \"$$(LC_ALL=C $(LD) --version | head -n 1)\"; )
1449 # The SOURCE_DATE_EPOCH mechanism requires a date that behaves like GNU date.
1450 # The BSD date on the other hand behaves different and would produce errors
1451 # with the misused '-d' switch. Respect that and search a working date with
1452 # well known pre- and suffixes for the GNU variant of date.
1453 define filechk_timestamp.h
1454 (if test -n "$${SOURCE_DATE_EPOCH}"; then \
1455 SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \
1457 for date in gdate date.gnu date; do \
1458 $${date} -u -d "$${SOURCE_DATE}" >/dev/null 2>&1 && DATE="$${date}"; \
1460 if test -n "$${DATE}"; then \
1461 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DATE "%b %d %C%y"'; \
1462 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TIME "%T"'; \
1463 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TZ "%z"'; \
1464 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1465 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \
1470 LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1471 LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \
1472 LC_ALL=C date +'#define U_BOOT_TZ "%z"'; \
1473 LC_ALL=C date +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1474 LC_ALL=C date +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \
1478 define filechk_defaultenv.h
1482 sed -e 's/\\\x0/\n/' | \
1483 xxd -i ; echo ", 0x00" ; )
1486 $(version_h): include/config/uboot.release FORCE
1487 $(call filechk,version.h)
1489 $(timestamp_h): $(srctree)/Makefile FORCE
1490 $(call filechk,timestamp.h)
1492 $(defaultenv_h): $(CONFIG_DEFAULT_ENV_FILE:"%"=%) FORCE
1493 $(call filechk,defaultenv.h)
1495 # ---------------------------------------------------------------------------
1496 quiet_cmd_cpp_lds = LDS $@
1497 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) \
1498 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
1500 u-boot.lds: $(LDSCRIPT) prepare FORCE
1501 $(call if_changed_dep,cpp_lds)
1503 spl/u-boot-spl.bin: spl/u-boot-spl
1505 spl/u-boot-spl: tools prepare \
1506 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb) \
1507 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_TPL_OF_PLATDATA),dts/dt.dtb)
1508 $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all
1510 spl/sunxi-spl.bin: spl/u-boot-spl
1513 spl/sunxi-spl-with-ecc.bin: spl/sunxi-spl.bin
1516 spl/u-boot-spl.sfp: spl/u-boot-spl
1519 spl/boot.bin: spl/u-boot-spl
1522 tpl/u-boot-tpl.bin: tools prepare \
1523 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb)
1524 $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
1526 TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
1532 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1533 -name '*.[chS]' -print`
1537 etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1538 -name '*.[chS]' -print`
1540 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1546 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1549 @$(call SYSTEM_MAP,$<) > $@
1551 #########################################################################
1553 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1554 # R_AARCH64_RELATIVE (64-bit).
1555 checkarmreloc: u-boot
1556 @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1557 grep R_A | sort -u`"; \
1558 if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1559 "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1560 echo "$< contains unexpected relocations: $$RELOC"; \
1564 envtools: scripts_basic $(version_h) $(timestamp_h)
1565 $(Q)$(MAKE) $(build)=tools/env
1567 tools-only: scripts_basic $(version_h) $(timestamp_h)
1568 $(Q)$(MAKE) $(build)=tools
1570 tools-all: export HOST_TOOLS_ALL=y
1571 tools-all: envtools tools ;
1573 cross_tools: export CROSS_BUILD_TOOLS=y
1574 cross_tools: tools ;
1578 git log --no-merges U-Boot-1_1_5.. | \
1579 unexpand -a | sed -e 's/\s\s*$$//' > $@
1581 #########################################################################
1584 # Cleaning is done on three levels.
1585 # make clean Delete most generated files
1586 # Leave enough to build external modules
1587 # make mrproper Delete the current configuration, and all generated files
1588 # make distclean Remove editor backup files, patch leftover files and the like
1590 # Directories & files removed with 'make clean'
1591 CLEAN_DIRS += $(MODVERDIR) \
1592 $(foreach d, spl tpl, $(patsubst %,$d/%, \
1593 $(filter-out include, $(shell ls -1 $d 2>/dev/null))))
1595 CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h \
1596 boot* u-boot* MLO* SPL System.map fit-dtb.blob
1598 # Directories & files removed with 'make mrproper'
1599 MRPROPER_DIRS += include/config include/generated spl tpl \
1601 MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \
1602 ctags etags tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
1604 # clean - Delete most, but leave enough to build external modules
1606 clean: rm-dirs := $(CLEAN_DIRS)
1607 clean: rm-files := $(CLEAN_FILES)
1609 clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
1611 clean-dirs := $(addprefix _clean_, $(clean-dirs))
1613 PHONY += $(clean-dirs) clean archclean
1615 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1617 clean: $(clean-dirs)
1620 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1621 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1622 -o -name '*.ko.*' -o -name '*.su' \
1623 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1624 -o -name '*.lex.c' -o -name '*.tab.[ch]' \
1625 -o -name '*.symtypes' -o -name 'modules.order' \
1626 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1627 -o -name 'dsdt.aml' -o -name 'dsdt.asl.tmp' -o -name 'dsdt.c' \
1628 -o -name '*.efi' -o -name '*.gcno' -o -name '*.so' \) \
1629 -type f -print | xargs rm -f
1631 # mrproper - Delete all generated files, including .config
1633 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1634 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1635 mrproper-dirs := $(addprefix _mrproper_,scripts)
1637 PHONY += $(mrproper-dirs) mrproper archmrproper
1639 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1641 mrproper: clean $(mrproper-dirs)
1644 @rm -f arch/*/include/asm/arch
1651 @find $(srctree) $(RCS_FIND_IGNORE) \
1652 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1653 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1654 -o -name '.*.rej' -o -name '*%' -o -name 'core' \
1655 -o -name '*.pyc' \) \
1656 -type f -print | xargs rm -f
1660 F=`basename $(srctree)` ; cd .. ; \
1661 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1664 @echo 'Cleaning targets:'
1665 @echo ' clean - Remove most generated files but keep the config'
1666 @echo ' mrproper - Remove all generated files + config + various backup files'
1667 @echo ' distclean - mrproper + remove editor backup and patch files'
1669 @echo 'Configuration targets:'
1670 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1672 @echo 'Other generic targets:'
1673 @echo ' all - Build all necessary images depending on configuration'
1674 @echo ' tests - Build U-Boot for sandbox and run tests'
1675 @echo '* u-boot - Build the bare u-boot'
1676 @echo ' dir/ - Build all files in dir and below'
1677 @echo ' dir/file.[oisS] - Build specified target only'
1678 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1679 @echo ' (requires a recent binutils and recent build (System.map))'
1680 @echo ' tags/ctags - Generate ctags file for editors'
1681 @echo ' etags - Generate etags file for editors'
1682 @echo ' cscope - Generate cscope index'
1683 @echo ' ubootrelease - Output the release version string (use with make -s)'
1684 @echo ' ubootversion - Output the version stored in Makefile (use with make -s)'
1685 @echo " cfg - Don't build, just create the .cfg files"
1686 @echo " envtools - Build only the target-side environment tools"
1688 @echo 'Static analysers'
1689 @echo ' checkstack - Generate a list of stack hogs'
1690 @echo ' coccicheck - Execute static code analysis with Coccinelle'
1692 @echo 'Documentation targets:'
1693 @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp
1695 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1696 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1697 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1698 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1699 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1700 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1701 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1702 @echo ' 1: warnings which may be relevant and do not occur too often'
1703 @echo ' 2: warnings which occur quite often but may still be relevant'
1704 @echo ' 3: more obscure warnings, can most likely be ignored'
1705 @echo ' Multiple levels can be combined with W=12 or W=123'
1707 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1708 @echo 'For further info see the ./README file'
1713 # Documentation targets
1714 # ---------------------------------------------------------------------------
1715 DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \
1716 linkcheckdocs dochelp refcheckdocs
1717 PHONY += $(DOC_TARGETS)
1718 $(DOC_TARGETS): scripts_basic FORCE
1719 $(Q)$(MAKE) $(build)=Documentation $@
1721 endif #ifeq ($(config-targets),1)
1722 endif #ifeq ($(mixed-targets),1)
1724 PHONY += checkstack ubootrelease ubootversion
1727 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1728 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1731 @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1734 @echo $(UBOOTVERSION)
1737 # ---------------------------------------------------------------------------
1738 # Single targets are compatible with:
1739 # - build with mixed source and output
1740 # - build with separate output dir 'make O=...'
1741 # - external modules
1743 # target-dir => where to store outputfile
1744 # build-dir => directory in kernel source tree to use
1746 ifeq ($(KBUILD_EXTMOD),)
1747 build-dir = $(patsubst %/,%,$(dir $@))
1748 target-dir = $(dir $@)
1750 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1751 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1752 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1755 %.s: %.c prepare scripts FORCE
1756 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1757 %.i: %.c prepare scripts FORCE
1758 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1759 %.o: %.c prepare scripts FORCE
1760 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1761 %.lst: %.c prepare scripts FORCE
1762 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1763 %.s: %.S prepare scripts FORCE
1764 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1765 %.o: %.S prepare scripts FORCE
1766 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1767 %.symtypes: %.c prepare scripts FORCE
1768 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1771 /: prepare scripts FORCE
1773 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1774 $(build)=$(build-dir)
1775 %/: prepare scripts FORCE
1777 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1778 $(build)=$(build-dir)
1779 %.ko: prepare scripts FORCE
1781 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1782 $(build)=$(build-dir) $(@:.ko=.o)
1783 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1785 # Consistency checks
1786 # ---------------------------------------------------------------------------
1791 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
1793 # FIXME Should go into a make.lib or something
1794 # ===========================================================================
1796 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1797 cmd_rmdirs = rm -rf $(rm-dirs)
1799 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1800 cmd_rmfiles = rm -f $(rm-files)
1802 # read all saved command lines
1804 targets := $(wildcard $(sort $(targets)))
1805 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1807 ifneq ($(cmd_files),)
1808 $(cmd_files): ; # Do not try to update included dependency files
1809 include $(cmd_files)
1812 endif # skip-makefile
1817 # Declare the contents of the .PHONY variable as phony. We keep that
1818 # information in a variable so we can use it in if_changed and friends.