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 -fno-strict-aliasing
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) $(PATCHLEVEL)
432 # To make sure we do not include .config for any of the *config targets
433 # catch them early, and hand them over to scripts/kconfig/Makefile
434 # It is allowed to specify more targets when calling make, including
435 # mixing *config targets and build targets.
436 # For example 'make oldconfig all'.
437 # Detect when mixed targets is specified, and make a second invocation
438 # of make so .config is not included in this case either (for *config).
440 version_h := include/generated/version_autogenerated.h
441 timestamp_h := include/generated/timestamp_autogenerated.h
442 defaultenv_h := include/generated/defaultenv_autogenerated.h
444 no-dot-config-targets := clean clobber mrproper distclean \
445 help %docs check% coccicheck \
446 ubootversion backup tests check qcheck
452 ifneq ($(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/raw/
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 ALL-$(CONFIG_ARCH_MEDIATEK) += u-boot-mtk.bin
857 # Add optional build target if defined in board/cpu/soc headers
858 ifneq ($(CONFIG_BUILD_TARGET),)
859 ALL-y += $(CONFIG_BUILD_TARGET:"%"=%)
862 ifneq ($(CONFIG_SYS_INIT_SP_BSS_OFFSET),)
863 ALL-y += init_sp_bss_offset_check
866 ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
867 ALL-y += u-boot-with-dtb.bin
870 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
872 # Avoid 'Not enough room for program headers' error on binutils 2.28 onwards.
873 LDFLAGS_u-boot += $(call ld-option, --no-dynamic-linker)
875 ifeq ($(CONFIG_ARC)$(CONFIG_NIOS2)$(CONFIG_X86)$(CONFIG_XTENSA),)
876 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
879 # Normally we fill empty space with 0xff
880 quiet_cmd_objcopy = OBJCOPY $@
881 cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \
882 $(OBJCOPYFLAGS_$(@F)) $< $@
884 # Provide a version which does not do this, for use by EFI
885 quiet_cmd_zobjcopy = OBJCOPY $@
886 cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
888 quiet_cmd_efipayload = OBJCOPY $@
889 cmd_efipayload = $(OBJCOPY) -I binary -O $(EFIPAYLOAD_BFDTARGET) -B $(EFIPAYLOAD_BFDARCH) $< $@
891 MKIMAGEOUTPUT ?= /dev/null
893 quiet_cmd_mkimage = MKIMAGE $@
894 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
895 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
897 quiet_cmd_mkfitimage = MKIMAGE $@
898 cmd_mkfitimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -f $(U_BOOT_ITS) -E $@ \
899 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
901 quiet_cmd_cat = CAT $@
902 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
904 append = cat $(filter-out $< $(PHONY), $^) >> $@
906 quiet_cmd_pad_cat = CAT $@
907 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
911 quiet_cmd_cfgcheck = CFGCHK $2
912 cmd_cfgcheck = $(srctree)/scripts/check-config.sh $2 \
913 $(srctree)/scripts/config_whitelist.txt $(srctree)
916 ifeq ($(CONFIG_DM_I2C_COMPAT)$(CONFIG_SANDBOX),y)
917 @echo "===================== WARNING ======================"
918 @echo "This board uses CONFIG_DM_I2C_COMPAT. Please remove"
919 @echo "(possibly in a subsequent patch in your series)"
920 @echo "before sending patches to the mailing list."
921 @echo "===================================================="
923 ifeq ($(CONFIG_MMC),y)
924 ifneq ($(CONFIG_DM_MMC)$(CONFIG_OF_CONTROL)$(CONFIG_BLK),yyy)
925 @echo "===================== WARNING ======================"
926 @echo "This board does not use CONFIG_DM_MMC. Please update"
927 @echo "the board to use CONFIG_DM_MMC before the v2019.04 release."
928 @echo "Failure to update by the deadline may result in board removal."
929 @echo "See doc/driver-model/MIGRATION.txt for more info."
930 @echo "===================================================="
933 ifeq ($(CONFIG_USB),y)
934 ifneq ($(CONFIG_DM_USB)$(CONFIG_OF_CONTROL)$(CONFIG_BLK),yyy)
935 @echo "===================== WARNING ======================"
936 @echo "This board does not use CONFIG_DM_USB. Please update"
937 @echo "the board to use CONFIG_DM_USB before the v2019.07 release."
938 @echo "Failure to update by the deadline may result in board removal."
939 @echo "See doc/driver-model/MIGRATION.txt for more info."
940 @echo "===================================================="
943 @# Check that this build does not use CONFIG options that we do not
944 @# know about unless they are in Kconfig. All the existing CONFIG
945 @# options are whitelisted, so new ones should not be added.
946 $(call cmd,cfgcheck,u-boot.cfg)
952 $(Q)$(MAKE) $(build)=dts dtbs
954 quiet_cmd_copy = COPY $@
957 ifeq ($(CONFIG_MULTI_DTB_FIT),y)
959 fit-dtb.blob: dts/dt.dtb FORCE
960 $(call if_changed,mkimage)
962 MKIMAGEFLAGS_fit-dtb.blob = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
964 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) -d /dev/null
966 u-boot-fit-dtb.bin: u-boot-nodtb.bin fit-dtb.blob
967 $(call if_changed,cat)
969 u-boot.bin: u-boot-fit-dtb.bin FORCE
970 $(call if_changed,copy)
971 else ifeq ($(CONFIG_OF_SEPARATE),y)
972 u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE
973 $(call if_changed,cat)
975 u-boot.bin: u-boot-dtb.bin FORCE
976 $(call if_changed,copy)
978 u-boot.bin: u-boot-nodtb.bin FORCE
979 $(call if_changed,copy)
983 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
986 $(Q)$(MAKE) $(build)=arch/arm/cpu/armv7/vf610 $@
988 quiet_cmd_copy = COPY $@
991 u-boot.dtb: dts/dt.dtb
994 OBJCOPYFLAGS_u-boot.hex := -O ihex
996 OBJCOPYFLAGS_u-boot.srec := -O srec
998 u-boot.hex u-boot.srec: u-boot FORCE
999 $(call if_changed,objcopy)
1001 OBJCOPYFLAGS_u-boot-elf.srec := $(OBJCOPYFLAGS_u-boot.srec)
1003 u-boot-elf.srec: u-boot.elf FORCE
1004 $(call if_changed,objcopy)
1006 OBJCOPYFLAGS_u-boot-spl.srec = $(OBJCOPYFLAGS_u-boot.srec)
1008 spl/u-boot-spl.srec: spl/u-boot-spl FORCE
1009 $(call if_changed,objcopy)
1011 OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \
1012 $(if $(CONFIG_X86_16BIT_INIT),-R .start16 -R .resetvec) \
1013 $(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR),-R .bootpg -R .resetvec)
1015 OBJCOPYFLAGS_u-boot-spl.hex = $(OBJCOPYFLAGS_u-boot.hex)
1017 spl/u-boot-spl.hex: spl/u-boot-spl FORCE
1018 $(call if_changed,objcopy)
1020 binary_size_check: u-boot-nodtb.bin FORCE
1021 @file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \
1022 map_size=$(shell cat u-boot.map | \
1023 awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
1026 if [ "" != "$$map_size" ]; then \
1027 if test $$map_size -ne $$file_size; then \
1028 echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
1029 echo " but u-boot-nodtb.bin shows $$file_size" >&2 ; \
1034 ifneq ($(CONFIG_SYS_INIT_SP_BSS_OFFSET),)
1035 ifneq ($(CONFIG_SYS_MALLOC_F_LEN),)
1036 subtract_sys_malloc_f_len = space=$$(($${space} - $(CONFIG_SYS_MALLOC_F_LEN)))
1038 subtract_sys_malloc_f_len = true
1040 # The 1/4 margin below is somewhat arbitrary. The likely initial SP usage is
1041 # so low that the DTB could probably use 90%+ of the available space, for
1042 # current values of CONFIG_SYS_INIT_SP_BSS_OFFSET at least. However, let's be
1043 # safe for now and tweak this later if space becomes tight.
1044 # A rejected alternative would be to check that some absolute minimum stack
1045 # space was available. However, since CONFIG_SYS_INIT_SP_BSS_OFFSET is
1046 # deliberately build-specific, to take account of build-to-build stack usage
1047 # differences due to different feature sets, there is no common absolute value
1049 init_sp_bss_offset_check: u-boot.dtb FORCE
1050 @dtb_size=$(shell wc -c u-boot.dtb | awk '{print $$1}') ; \
1051 space=$(CONFIG_SYS_INIT_SP_BSS_OFFSET) ; \
1052 $(subtract_sys_malloc_f_len) ; \
1053 quarter_space=$$(($${space} / 4)) ; \
1054 if [ $${dtb_size} -gt $${quarter_space} ]; then \
1055 echo "u-boot.dtb is larger than 1 quarter of " >&2 ; \
1056 echo "(CONFIG_SYS_INIT_SP_BSS_OFFSET - CONFIG_SYS_MALLOC_F_LEN)" >&2 ; \
1061 u-boot-nodtb.bin: u-boot FORCE
1062 $(call if_changed,objcopy)
1063 $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
1068 $(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS)
1072 # ---------------------------------------------------------------------------
1073 # Use 'make BINMAN_DEBUG=1' to enable debugging
1074 quiet_cmd_binman = BINMAN $@
1075 cmd_binman = $(srctree)/tools/binman/binman -u -d u-boot.dtb -O . -m \
1076 -I . -I $(srctree) -I $(srctree)/board/$(BOARDDIR) \
1077 $(if $(BINMAN_DEBUG),-D) $(BINMAN_$(@F)) $<
1079 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
1081 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
1083 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
1084 $(call if_changed,objcopy)
1087 # U-Boot entry point, needed for booting of full-blown U-Boot
1088 # from the SPL U-Boot version.
1090 ifndef CONFIG_SYS_UBOOT_START
1091 CONFIG_SYS_UBOOT_START := 0
1094 # Boards with more complex image requirments can provide an .its source file
1095 # or a generator script
1096 ifneq ($(CONFIG_SPL_FIT_SOURCE),"")
1097 U_BOOT_ITS = $(subst ",,$(CONFIG_SPL_FIT_SOURCE))
1099 ifneq ($(CONFIG_SPL_FIT_GENERATOR),"")
1100 U_BOOT_ITS := u-boot.its
1101 ifeq ($(CONFIG_SPL_FIT_GENERATOR),"arch/arm/mach-rockchip/make_fit_atf.py")
1102 U_BOOT_ITS_DEPS += u-boot
1104 $(U_BOOT_ITS): $(U_BOOT_ITS_DEPS) FORCE
1105 $(srctree)/$(CONFIG_SPL_FIT_GENERATOR) \
1106 $(patsubst %,arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) > $@
1110 ifdef CONFIG_SPL_LOAD_FIT
1111 MKIMAGEFLAGS_u-boot.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
1112 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1113 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \
1114 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST)))
1116 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
1117 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1118 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
1119 MKIMAGEFLAGS_u-boot-ivt.img = -A $(ARCH) -T firmware_ivt -C none -O u-boot \
1120 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1121 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
1122 u-boot-ivt.img: MKIMAGEOUTPUT = u-boot-ivt.img.log
1123 CLEAN_FILES += u-boot-ivt.img.log u-boot-dtb.imx.log SPL.log u-boot.imx.log
1126 MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
1128 MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
1129 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
1131 MKIMAGEFLAGS_u-boot-spl.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
1132 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \
1133 $(if $(KEYDIR),-k $(KEYDIR))
1135 MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1136 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
1138 u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl u-boot-ivt.img: \
1139 $(if $(CONFIG_SPL_LOAD_FIT),u-boot-nodtb.bin dts/dt.dtb,u-boot.bin) FORCE
1140 $(call if_changed,mkimage)
1142 u-boot.itb: u-boot-nodtb.bin dts/dt.dtb $(U_BOOT_ITS) FORCE
1143 $(call if_changed,mkfitimage)
1146 u-boot-spl.kwb: u-boot.img spl/u-boot-spl.bin FORCE
1147 $(call if_changed,mkimage)
1149 u-boot.sha1: u-boot.bin
1150 tools/ubsha1 u-boot.bin
1153 $(OBJDUMP) -d $< > $@
1155 ifneq ($(CONFIG_SPL_PAYLOAD),)
1156 SPL_PAYLOAD := $(CONFIG_SPL_PAYLOAD:"%"=%)
1158 SPL_PAYLOAD := u-boot.bin
1161 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
1162 --pad-to=$(CONFIG_SPL_PAD_TO)
1163 u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
1164 $(call if_changed,pad_cat)
1166 ifeq ($(CONFIG_ARCH_LPC32XX)$(CONFIG_SPL),yy)
1167 MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE)
1169 lpc32xx-spl.img: spl/u-boot-spl.bin FORCE
1170 $(call if_changed,mkimage)
1172 OBJCOPYFLAGS_lpc32xx-boot-0.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1174 lpc32xx-boot-0.bin: lpc32xx-spl.img FORCE
1175 $(call if_changed,objcopy)
1177 OBJCOPYFLAGS_lpc32xx-boot-1.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1179 lpc32xx-boot-1.bin: lpc32xx-spl.img FORCE
1180 $(call if_changed,objcopy)
1182 lpc32xx-full.bin: lpc32xx-boot-0.bin lpc32xx-boot-1.bin u-boot.img FORCE
1183 $(call if_changed,cat)
1185 CLEAN_FILES += lpc32xx-*
1188 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
1189 --pad-to=$(CONFIG_TPL_PAD_TO)
1190 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
1191 $(call if_changed,pad_cat)
1193 SPL: spl/u-boot-spl.bin FORCE
1194 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1196 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
1197 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1199 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
1201 u-boot.ubl: u-boot-with-spl.bin FORCE
1202 $(call if_changed,mkimage)
1204 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
1205 $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
1206 -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
1207 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
1208 $(call if_changed,mkimage)
1210 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1211 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
1212 $(call if_changed,pad_cat)
1214 u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
1215 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
1216 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
1217 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
1219 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
1220 # Both images are created using mkimage (crc etc), so that the ROM
1221 # bootloader can check its integrity. Padding needs to be done to the
1222 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
1223 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
1224 # The resulting image containing both U-Boot images is called u-boot.spr
1225 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
1226 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
1227 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
1228 $(call if_changed,mkimage)
1230 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1232 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
1233 $(call if_changed,pad_cat)
1235 ifneq ($(CONFIG_ARCH_SOCFPGA),)
1236 quiet_cmd_socboot = SOCBOOT $@
1237 cmd_socboot = cat spl/u-boot-spl.sfp spl/u-boot-spl.sfp \
1238 spl/u-boot-spl.sfp spl/u-boot-spl.sfp \
1239 u-boot.img > $@ || rm -f $@
1240 u-boot-with-spl.sfp: spl/u-boot-spl.sfp u-boot.img FORCE
1241 $(call if_changed,socboot)
1244 ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
1245 u-boot-with-dtb.bin: u-boot.bin u-boot.dtb \
1246 $(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR), u-boot-br.bin) FORCE
1247 $(call if_changed,binman)
1249 ifeq ($(CONFIG_MPC85XX_HAVE_RESET_VECTOR),y)
1250 OBJCOPYFLAGS_u-boot-br.bin := -O binary -j .bootpg -j .resetvec
1251 u-boot-br.bin: u-boot FORCE
1252 $(call if_changed,objcopy)
1256 # x86 uses a large ROM. We fill it with 0xff, put the 16-bit stuff (including
1257 # reset vector) at the top, Intel ME descriptor at the bottom, and U-Boot in
1258 # the middle. This is handled by binman based on an image description in the
1259 # board's device tree.
1260 ifneq ($(CONFIG_X86_RESET_VECTOR),)
1261 rom: u-boot.rom FORCE
1263 refcode.bin: $(srctree)/board/$(BOARDDIR)/refcode.bin FORCE
1264 $(call if_changed,copy)
1266 quiet_cmd_ldr = LD $@
1267 cmd_ldr = $(LD) $(LDFLAGS_$(@F)) \
1268 $(filter-out FORCE,$^) -o $@
1270 u-boot.rom: u-boot-x86-16bit.bin u-boot.bin \
1271 $(if $(CONFIG_SPL_X86_16BIT_INIT),spl/u-boot-spl.bin) \
1272 $(if $(CONFIG_HAVE_REFCODE),refcode.bin) FORCE
1273 $(call if_changed,binman)
1275 OBJCOPYFLAGS_u-boot-x86-16bit.bin := -O binary -j .start16 -j .resetvec
1276 u-boot-x86-16bit.bin: u-boot FORCE
1277 $(call if_changed,objcopy)
1280 ifneq ($(CONFIG_ARCH_SUNXI),)
1281 ifeq ($(CONFIG_ARM64),)
1282 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img u-boot.dtb FORCE
1283 $(call if_changed,binman)
1285 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.itb FORCE
1286 $(call if_changed,cat)
1290 ifneq ($(CONFIG_TEGRA),)
1291 ifneq ($(CONFIG_BINMAN),)
1292 # Makes u-boot-dtb-tegra.bin u-boot-tegra.bin u-boot-nodtb-tegra.bin
1293 %-dtb-tegra.bin %-tegra.bin %-nodtb-tegra.bin: \
1294 spl/%-spl %.bin FORCE
1295 $(call if_changed,binman)
1297 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1298 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot-nodtb.bin FORCE
1299 $(call if_changed,pad_cat)
1301 OBJCOPYFLAGS_u-boot-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1302 u-boot-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
1303 $(call if_changed,pad_cat)
1305 u-boot-dtb-tegra.bin: u-boot-tegra.bin FORCE
1306 $(call if_changed,copy)
1310 OBJCOPYFLAGS_u-boot-app.efi := $(OBJCOPYFLAGS_EFI)
1311 u-boot-app.efi: u-boot FORCE
1312 $(call if_changed,zobjcopy)
1314 u-boot.bin.o: u-boot.bin FORCE
1315 $(call if_changed,efipayload)
1317 u-boot-payload.lds: $(LDSCRIPT_EFI) FORCE
1318 $(call if_changed_dep,cpp_lds)
1320 # Rule to link the EFI payload which contains a stub and a U-Boot binary
1321 quiet_cmd_u-boot_payload ?= LD $@
1322 cmd_u-boot_payload ?= $(LD) $(LDFLAGS_EFI_PAYLOAD) -o $@ \
1323 -T u-boot-payload.lds arch/x86/cpu/call32.o \
1324 lib/efi/efi.o lib/efi/efi_stub.o u-boot.bin.o \
1325 $(addprefix arch/$(ARCH)/lib/,$(EFISTUB))
1327 u-boot-payload: u-boot.bin.o u-boot-payload.lds FORCE
1328 $(call if_changed,u-boot_payload)
1330 OBJCOPYFLAGS_u-boot-payload.efi := $(OBJCOPYFLAGS_EFI)
1331 u-boot-payload.efi: u-boot-payload FORCE
1332 $(call if_changed,zobjcopy)
1334 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
1335 $(call if_changed,cat)
1337 #Add a target to create boot binary having SPL binary in PBI format
1338 #concatenated with u-boot binary. It is need by PowerPC SoC having
1339 #internal SRAM <= 512KB.
1340 MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1341 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \
1342 -A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE)
1344 spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
1345 $(call if_changed,mkimage)
1348 UBOOT_BINLOAD := u-boot.img
1350 ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
1351 UBOOT_BINLOAD := u-boot-with-dtb.bin
1353 UBOOT_BINLOAD := u-boot.bin
1357 OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1360 u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE
1361 $(call if_changed,pad_cat)
1363 # PPC4xx needs the SPL at the end of the image, since the reset vector
1364 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
1365 # and need to introduce a new build target with the full blown U-Boot
1366 # at the start padded up to the start of the SPL image. And then concat
1367 # the SPL image to the end.
1369 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
1370 --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
1371 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
1372 $(call if_changed,pad_cat)
1374 # Create a new ELF from a raw binary file.
1375 ifndef PLATFORM_ELFENTRY
1376 PLATFORM_ELFENTRY = "_start"
1378 quiet_cmd_u-boot-elf ?= LD $@
1379 cmd_u-boot-elf ?= $(LD) u-boot-elf.o -o $@ \
1380 --defsym=$(PLATFORM_ELFENTRY)=$(CONFIG_SYS_TEXT_BASE) \
1381 -Ttext=$(CONFIG_SYS_TEXT_BASE)
1382 u-boot.elf: u-boot.bin
1383 $(Q)$(OBJCOPY) -I binary $(PLATFORM_ELFFLAGS) $< u-boot-elf.o
1384 $(call if_changed,u-boot-elf)
1386 # MediaTek's ARM-based u-boot needs a header to contains its load address
1387 # which is parsed by the BootROM.
1388 # If the SPL build is enabled, the header will be added to the spl binary,
1389 # and the spl binary and the u-boot.img will be combined into one file.
1390 # Otherwise the header will be added to the u-boot.bin directly.
1392 ifeq ($(CONFIG_SPL),y)
1393 spl/u-boot-spl-mtk.bin: spl/u-boot-spl
1395 u-boot-mtk.bin: u-boot.dtb u-boot.img spl/u-boot-spl-mtk.bin FORCE
1396 $(call if_changed,binman)
1398 MKIMAGEFLAGS_u-boot-mtk.bin = -T mtk_image \
1399 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \
1400 -n "$(patsubst "%",%,$(CONFIG_MTK_BROM_HEADER_INFO))"
1402 u-boot-mtk.bin: u-boot.bin FORCE
1403 $(call if_changed,mkimage)
1406 ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(ARCH)/Makefile.postlink)
1408 # Rule to link u-boot
1409 # May be overridden by arch/$(ARCH)/config.mk
1410 quiet_cmd_u-boot__ ?= LD $@
1411 cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
1412 -T u-boot.lds $(u-boot-init) \
1413 --start-group $(u-boot-main) --end-group \
1414 $(PLATFORM_LIBS) -Map u-boot.map; \
1415 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
1417 quiet_cmd_smap = GEN common/system_map.o
1419 smap=`$(call SYSTEM_MAP,u-boot) | \
1420 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
1421 $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
1422 -c $(srctree)/common/system_map.c -o common/system_map.o
1424 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds FORCE
1425 +$(call if_changed,u-boot__)
1426 ifeq ($(CONFIG_KALLSYMS),y)
1428 $(call cmd,u-boot__) common/system_map.o
1431 ifeq ($(CONFIG_RISCV),y)
1432 @tools/prelink-riscv $@ 0
1435 quiet_cmd_sym ?= SYM $@
1436 cmd_sym ?= $(OBJDUMP) -t $< > $@
1437 u-boot.sym: u-boot FORCE
1438 $(call if_changed,sym)
1440 # The actual objects are generated when descending,
1441 # make sure no implicit rule kicks in
1442 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
1444 # Handle descending into subdirectories listed in $(vmlinux-dirs)
1445 # Preset locale variables to speed up the build process. Limit locale
1446 # tweaks to this spot to avoid wrong language settings when running
1447 # make menuconfig etc.
1448 # Error messages still appears in the original language
1450 PHONY += $(u-boot-dirs)
1451 $(u-boot-dirs): prepare scripts
1452 $(Q)$(MAKE) $(build)=$@
1455 # The "tools" are needed early
1456 $(filter-out tools, $(u-boot-dirs)): tools
1457 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
1458 # is "yes"), so compile examples after U-Boot is compiled.
1459 examples: $(filter-out examples, $(u-boot-dirs))
1461 define filechk_uboot.release
1462 echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1465 # Store (new) UBOOTRELEASE string in include/config/uboot.release
1466 include/config/uboot.release: include/config/auto.conf FORCE
1467 $(call filechk,uboot.release)
1470 # Things we need to do before we recursively start building the kernel
1471 # or the modules are listed in "prepare".
1472 # A multi level approach is used. prepareN is processed before prepareN-1.
1473 # archprepare is used in arch Makefiles and when processed asm symlink,
1474 # version.h and scripts_basic is processed / created.
1476 # Listed in dependency order
1477 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1479 # prepare3 is used to check if we are building in a separate output directory,
1481 # 1) Check that make has not been executed in the kernel src $(srctree)
1482 prepare3: include/config/uboot.release
1483 ifneq ($(KBUILD_SRC),)
1484 @$(kecho) ' Using $(srctree) as source for U-Boot'
1485 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
1486 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
1487 echo >&2 " in the '$(srctree)' directory.";\
1492 # prepare2 creates a makefile if using a separate output directory
1493 prepare2: prepare3 outputmakefile
1495 prepare1: prepare2 $(version_h) $(timestamp_h) \
1496 include/config/auto.conf
1497 ifeq ($(wildcard $(LDSCRIPT)),)
1498 @echo >&2 " Could not find linker script."
1502 ifeq ($(CONFIG_USE_DEFAULT_ENV_FILE),y)
1503 prepare1: $(defaultenv_h)
1506 archprepare: prepare1 scripts_basic
1508 prepare0: archprepare FORCE
1509 $(Q)$(MAKE) $(build)=.
1511 # All the preparing..
1514 # Generate some files
1515 # ---------------------------------------------------------------------------
1517 define filechk_version.h
1518 (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1519 echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1520 echo \#define CC_VERSION_STRING \"$$(LC_ALL=C $(CC) --version | head -n 1)\"; \
1521 echo \#define LD_VERSION_STRING \"$$(LC_ALL=C $(LD) --version | head -n 1)\"; )
1524 # The SOURCE_DATE_EPOCH mechanism requires a date that behaves like GNU date.
1525 # The BSD date on the other hand behaves different and would produce errors
1526 # with the misused '-d' switch. Respect that and search a working date with
1527 # well known pre- and suffixes for the GNU variant of date.
1528 define filechk_timestamp.h
1529 (if test -n "$${SOURCE_DATE_EPOCH}"; then \
1530 SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \
1532 for date in gdate date.gnu date; do \
1533 $${date} -u -d "$${SOURCE_DATE}" >/dev/null 2>&1 && DATE="$${date}"; \
1535 if test -n "$${DATE}"; then \
1536 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DATE "%b %d %C%y"'; \
1537 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TIME "%T"'; \
1538 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TZ "%z"'; \
1539 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1540 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \
1545 LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1546 LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \
1547 LC_ALL=C date +'#define U_BOOT_TZ "%z"'; \
1548 LC_ALL=C date +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1549 LC_ALL=C date +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \
1553 define filechk_defaultenv.h
1557 sed -e 's/\\\x0/\n/' | \
1558 xxd -i ; echo ", 0x00" ; )
1561 $(version_h): include/config/uboot.release FORCE
1562 $(call filechk,version.h)
1564 $(timestamp_h): $(srctree)/Makefile FORCE
1565 $(call filechk,timestamp.h)
1567 $(defaultenv_h): $(CONFIG_DEFAULT_ENV_FILE:"%"=%) FORCE
1568 $(call filechk,defaultenv.h)
1570 # ---------------------------------------------------------------------------
1571 quiet_cmd_cpp_lds = LDS $@
1572 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) \
1573 -D__ASSEMBLY__ -x assembler-with-cpp -std=c99 -P -o $@ $<
1575 u-boot.lds: $(LDSCRIPT) prepare FORCE
1576 $(call if_changed_dep,cpp_lds)
1578 spl/u-boot-spl.bin: spl/u-boot-spl
1580 spl/u-boot-spl: tools prepare \
1581 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb) \
1582 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_TPL_OF_PLATDATA),dts/dt.dtb)
1583 $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all
1585 spl/sunxi-spl.bin: spl/u-boot-spl
1588 spl/sunxi-spl-with-ecc.bin: spl/sunxi-spl.bin
1591 spl/u-boot-spl.sfp: spl/u-boot-spl
1594 spl/boot.bin: spl/u-boot-spl
1597 tpl/u-boot-tpl.bin: tools prepare \
1598 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb)
1599 $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
1601 TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
1607 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1608 -name '*.[chS]' -print`
1612 etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1613 -name '*.[chS]' -print`
1615 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1621 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1624 @$(call SYSTEM_MAP,$<) > $@
1626 #########################################################################
1628 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1629 # R_AARCH64_RELATIVE (64-bit).
1630 checkarmreloc: u-boot
1631 @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1632 grep R_A | sort -u`"; \
1633 if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1634 "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1635 echo "$< contains unexpected relocations: $$RELOC"; \
1639 envtools: scripts_basic $(version_h) $(timestamp_h)
1640 $(Q)$(MAKE) $(build)=tools/env
1642 tools-only: scripts_basic $(version_h) $(timestamp_h)
1643 $(Q)$(MAKE) $(build)=tools
1645 tools-all: export HOST_TOOLS_ALL=y
1646 tools-all: envtools tools ;
1648 cross_tools: export CROSS_BUILD_TOOLS=y
1649 cross_tools: tools ;
1653 git log --no-merges U-Boot-1_1_5.. | \
1654 unexpand -a | sed -e 's/\s\s*$$//' > $@
1656 #########################################################################
1659 # Cleaning is done on three levels.
1660 # make clean Delete most generated files
1661 # Leave enough to build external modules
1662 # make mrproper Delete the current configuration, and all generated files
1663 # make distclean Remove editor backup files, patch leftover files and the like
1665 # Directories & files removed with 'make clean'
1666 CLEAN_DIRS += $(MODVERDIR) \
1667 $(foreach d, spl tpl, $(patsubst %,$d/%, \
1668 $(filter-out include, $(shell ls -1 $d 2>/dev/null))))
1670 CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h \
1671 boot* u-boot* MLO* SPL System.map fit-dtb.blob
1673 # Directories & files removed with 'make mrproper'
1674 MRPROPER_DIRS += include/config include/generated spl tpl \
1676 MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \
1677 ctags etags tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
1679 # clean - Delete most, but leave enough to build external modules
1681 clean: rm-dirs := $(CLEAN_DIRS)
1682 clean: rm-files := $(CLEAN_FILES)
1684 clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
1686 clean-dirs := $(addprefix _clean_, $(clean-dirs))
1688 PHONY += $(clean-dirs) clean archclean
1690 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1692 clean: $(clean-dirs)
1695 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1696 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1697 -o -name '*.ko.*' -o -name '*.su' \
1698 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1699 -o -name '*.lex.c' -o -name '*.tab.[ch]' \
1700 -o -name '*.symtypes' -o -name 'modules.order' \
1701 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1702 -o -name 'dsdt.aml' -o -name 'dsdt.asl.tmp' -o -name 'dsdt.c' \
1703 -o -name '*.efi' -o -name '*.gcno' -o -name '*.so' \) \
1704 -type f -print | xargs rm -f
1706 # mrproper - Delete all generated files, including .config
1708 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1709 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1710 mrproper-dirs := $(addprefix _mrproper_,scripts)
1712 PHONY += $(mrproper-dirs) mrproper archmrproper
1714 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1716 mrproper: clean $(mrproper-dirs)
1719 @rm -f arch/*/include/asm/arch
1726 @find $(srctree) $(RCS_FIND_IGNORE) \
1727 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1728 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1729 -o -name '.*.rej' -o -name '*%' -o -name 'core' \
1730 -o -name '*.pyc' \) \
1731 -type f -print | xargs rm -f
1735 F=`basename $(srctree)` ; cd .. ; \
1736 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1739 @echo 'Cleaning targets:'
1740 @echo ' clean - Remove most generated files but keep the config'
1741 @echo ' mrproper - Remove all generated files + config + various backup files'
1742 @echo ' distclean - mrproper + remove editor backup and patch files'
1744 @echo 'Configuration targets:'
1745 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1747 @echo 'Test targets:'
1749 @echo ' check - Run all automated tests that use sandbox'
1750 @echo ' qcheck - Run quick automated tests that use sandbox'
1752 @echo 'Other generic targets:'
1753 @echo ' all - Build all necessary images depending on configuration'
1754 @echo ' tests - Build U-Boot for sandbox and run tests'
1755 @echo '* u-boot - Build the bare u-boot'
1756 @echo ' dir/ - Build all files in dir and below'
1757 @echo ' dir/file.[oisS] - Build specified target only'
1758 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1759 @echo ' (requires a recent binutils and recent build (System.map))'
1760 @echo ' tags/ctags - Generate ctags file for editors'
1761 @echo ' etags - Generate etags file for editors'
1762 @echo ' cscope - Generate cscope index'
1763 @echo ' ubootrelease - Output the release version string (use with make -s)'
1764 @echo ' ubootversion - Output the version stored in Makefile (use with make -s)'
1765 @echo " cfg - Don't build, just create the .cfg files"
1766 @echo " envtools - Build only the target-side environment tools"
1768 @echo 'Static analysers'
1769 @echo ' checkstack - Generate a list of stack hogs'
1770 @echo ' coccicheck - Execute static code analysis with Coccinelle'
1772 @echo 'Documentation targets:'
1773 @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp
1775 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1776 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1777 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1778 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1779 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1780 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1781 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1782 @echo ' 1: warnings which may be relevant and do not occur too often'
1783 @echo ' 2: warnings which occur quite often but may still be relevant'
1784 @echo ' 3: more obscure warnings, can most likely be ignored'
1785 @echo ' Multiple levels can be combined with W=12 or W=123'
1787 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1788 @echo 'For further info see the ./README file'
1794 $(srctree)/test/run quick
1796 # Documentation targets
1797 # ---------------------------------------------------------------------------
1798 DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \
1799 linkcheckdocs dochelp refcheckdocs
1800 PHONY += $(DOC_TARGETS)
1801 $(DOC_TARGETS): scripts_basic FORCE
1802 $(Q)$(MAKE) $(build)=Documentation $@
1804 endif #ifeq ($(config-targets),1)
1805 endif #ifeq ($(mixed-targets),1)
1807 PHONY += checkstack ubootrelease ubootversion
1810 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1811 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1814 @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1817 @echo $(UBOOTVERSION)
1820 # ---------------------------------------------------------------------------
1821 # Single targets are compatible with:
1822 # - build with mixed source and output
1823 # - build with separate output dir 'make O=...'
1824 # - external modules
1826 # target-dir => where to store outputfile
1827 # build-dir => directory in kernel source tree to use
1829 ifeq ($(KBUILD_EXTMOD),)
1830 build-dir = $(patsubst %/,%,$(dir $@))
1831 target-dir = $(dir $@)
1833 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1834 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1835 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1838 %.s: %.c prepare scripts FORCE
1839 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1840 %.i: %.c prepare scripts FORCE
1841 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1842 %.o: %.c prepare scripts FORCE
1843 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1844 %.lst: %.c prepare scripts FORCE
1845 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1846 %.s: %.S prepare scripts FORCE
1847 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1848 %.o: %.S prepare scripts FORCE
1849 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1850 %.symtypes: %.c prepare scripts FORCE
1851 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1854 /: prepare scripts FORCE
1856 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1857 $(build)=$(build-dir)
1858 %/: prepare scripts FORCE
1860 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1861 $(build)=$(build-dir)
1862 %.ko: prepare scripts FORCE
1864 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1865 $(build)=$(build-dir) $(@:.ko=.o)
1866 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1868 # Consistency checks
1869 # ---------------------------------------------------------------------------
1874 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
1876 # FIXME Should go into a make.lib or something
1877 # ===========================================================================
1879 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1880 cmd_rmdirs = rm -rf $(rm-dirs)
1882 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1883 cmd_rmfiles = rm -f $(rm-files)
1885 # read all saved command lines
1887 targets := $(wildcard $(sort $(targets)))
1888 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1890 ifneq ($(cmd_files),)
1891 $(cmd_files): ; # Do not try to update included dependency files
1892 include $(cmd_files)
1895 endif # skip-makefile
1900 # Declare the contents of the .PHONY variable as phony. We keep that
1901 # information in a variable so we can use it in if_changed and friends.