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 # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
379 UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
380 UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
382 export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
383 export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
384 export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
385 export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
386 export MAKE LEX YACC AWK PERL PYTHON PYTHON2 PYTHON3
387 export HOSTCXX HOSTCXXFLAGS CHECK CHECKFLAGS DTC DTC_FLAGS
389 export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
390 export KBUILD_CFLAGS KBUILD_AFLAGS
392 # When compiling out-of-tree modules, put MODVERDIR in the module
393 # tree rather than in the kernel tree. The kernel tree might
395 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
397 # Files to ignore in find ... statements
399 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
400 -name CVS -o -name .pc -o -name .hg -o -name .git \) \
402 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
403 --exclude CVS --exclude .pc --exclude .hg --exclude .git
405 # ===========================================================================
406 # Rules shared between *config targets and build targets
408 # Basic helpers built in scripts/
409 PHONY += scripts_basic
411 $(Q)$(MAKE) $(build)=scripts/basic
412 $(Q)rm -f .tmp_quiet_recordmcount
414 # To avoid any implicit rule to kick in, define an empty command.
415 scripts/basic/%: scripts_basic ;
417 PHONY += outputmakefile
418 # outputmakefile generates a Makefile in the output directory, if using a
419 # separate output directory. This allows convenient use of make in the
422 ifneq ($(KBUILD_SRC),)
423 $(Q)ln -fsn $(srctree) source
424 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
425 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
428 # To make sure we do not include .config for any of the *config targets
429 # catch them early, and hand them over to scripts/kconfig/Makefile
430 # It is allowed to specify more targets when calling make, including
431 # mixing *config targets and build targets.
432 # For example 'make oldconfig all'.
433 # Detect when mixed targets is specified, and make a second invocation
434 # of make so .config is not included in this case either (for *config).
436 version_h := include/generated/version_autogenerated.h
437 timestamp_h := include/generated/timestamp_autogenerated.h
438 defaultenv_h := include/generated/defaultenv_autogenerated.h
440 no-dot-config-targets := clean clobber mrproper distclean \
441 help %docs check% coccicheck \
442 ubootversion backup tests
448 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
449 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
454 ifeq ($(KBUILD_EXTMOD),)
455 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
457 ifneq ($(words $(MAKECMDGOALS)),1)
463 ifeq ($(mixed-targets),1)
464 # ===========================================================================
465 # We're called with mixed targets (*config and build targets).
466 # Handle them one by one.
468 PHONY += $(MAKECMDGOALS) __build_one_by_one
470 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
475 for i in $(MAKECMDGOALS); do \
476 $(MAKE) -f $(srctree)/Makefile $$i; \
480 ifeq ($(config-targets),1)
481 # ===========================================================================
482 # *config targets only - make sure prerequisites are updated, and descend
483 # in scripts/kconfig to make the *config target
485 KBUILD_DEFCONFIG := sandbox_defconfig
486 export KBUILD_DEFCONFIG KBUILD_KCONFIG
488 config: scripts_basic outputmakefile FORCE
489 $(Q)$(MAKE) $(build)=scripts/kconfig $@
491 %config: scripts_basic outputmakefile FORCE
492 $(Q)$(MAKE) $(build)=scripts/kconfig $@
495 # ===========================================================================
496 # Build targets only - this includes vmlinux, arch specific targets, clean
497 # targets and others. In general all targets except *config targets.
499 # Additional helpers built in scripts/
500 # Carefully list dependencies so we do not try to build scripts twice
503 scripts: scripts_basic include/config/auto.conf
504 $(Q)$(MAKE) $(build)=$(@)
506 ifeq ($(dot-config),1)
508 -include include/config/auto.conf
510 # Read in dependencies to all Kconfig* files, make sure to run
511 # oldconfig if changes are detected.
512 -include include/config/auto.conf.cmd
514 # To avoid any implicit rule to kick in, define an empty command
515 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
517 # If .config is newer than include/config/auto.conf, someone tinkered
518 # with it and forgot to run make oldconfig.
519 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
520 # we execute the config step to be sure to catch updated Kconfig files
521 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
522 $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig
523 @# If the following part fails, include/config/auto.conf should be
524 @# deleted so "make silentoldconfig" will be re-run on the next build.
525 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf || \
526 { rm -f include/config/auto.conf; false; }
527 @# include/config.h has been updated after "make silentoldconfig".
528 @# We need to touch include/config/auto.conf so it gets newer
529 @# than include/config.h.
530 @# Otherwise, 'make silentoldconfig' would be invoked twice.
531 $(Q)touch include/config/auto.conf
533 u-boot.cfg spl/u-boot.cfg tpl/u-boot.cfg: include/config.h FORCE
534 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf $(@)
536 -include include/autoconf.mk
537 -include include/autoconf.mk.dep
539 # We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf
540 # is up-to-date. When we switch to a different board configuration, old CONFIG
541 # macros are still remaining in include/config/auto.conf. Without the following
542 # gimmick, wrong config.mk would be included leading nasty warnings/errors.
543 ifneq ($(wildcard $(KCONFIG_CONFIG)),)
544 ifneq ($(wildcard include/config/auto.conf),)
545 autoconf_is_old := $(shell find . -path ./$(KCONFIG_CONFIG) -newer \
546 include/config/auto.conf)
547 ifeq ($(autoconf_is_old),)
549 include arch/$(ARCH)/Makefile
554 # These are set by the arch-specific config.mk. Make sure they are exported
555 # so they can be used when building an EFI application.
556 export EFI_LDS # Filename of EFI link script in arch/$(ARCH)/lib
557 export EFI_CRT0 # Filename of EFI CRT0 in arch/$(ARCH)/lib
558 export EFI_RELOC # Filename of EFU relocation code in arch/$(ARCH)/lib
559 export CFLAGS_EFI # Compiler flags to add when building EFI app
560 export CFLAGS_NON_EFI # Compiler flags to remove when building EFI app
561 export EFI_TARGET # binutils target if EFI is natively supported
563 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
564 # that (or fail if absent). Otherwise, search for a linker script in a
568 #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
569 ifdef CONFIG_SYS_LDSCRIPT
570 # need to strip off double quotes
571 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
575 # If there is no specified link script, we look in a number of places for it
577 ifeq ($(wildcard $(LDSCRIPT)),)
578 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
580 ifeq ($(wildcard $(LDSCRIPT)),)
581 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
583 ifeq ($(wildcard $(LDSCRIPT)),)
584 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
589 # Dummy target needed, because used as prerequisite
590 include/config/auto.conf: ;
591 endif # $(dot-config)
594 # Xtensa linker script cannot be preprocessed with -ansi because of
595 # preprocessor operations on strings that don't make C identifiers.
597 ifeq ($(CONFIG_XTENSA),)
601 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
607 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
608 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks)
610 # change __FILE__ to the relative path from the srctree
611 KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
614 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
615 # option to the assembler.
618 # Report stack usage if supported
619 # ARC tools based on GCC 7.1 has an issue with stack usage
620 # with naked functions, see commit message for more details
622 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
623 KBUILD_CFLAGS += -fstack-usage
627 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
628 ifeq ($(cc-name),clang)
629 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
630 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
631 KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
632 KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
633 KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
636 # turn jbsr into jsr for m68k
638 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
639 KBUILD_AFLAGS += -Wa,-gstabs,-S
643 # Prohibit date/time macros, which would make the build non-deterministic
644 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
646 include scripts/Makefile.extrawarn
648 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
649 KBUILD_CPPFLAGS += $(KCPPFLAGS)
650 KBUILD_AFLAGS += $(KAFLAGS)
651 KBUILD_CFLAGS += $(KCFLAGS)
653 # Use UBOOTINCLUDE when you must reference the include/ directory.
654 # Needed to be compatible with the O= option
657 $(if $(KBUILD_SRC), -I$(srctree)/include) \
658 $(if $(CONFIG_$(SPL_)SYS_THUMB_BUILD), \
659 $(if $(CONFIG_HAS_THUMB2),, \
660 -I$(srctree)/arch/$(ARCH)/thumb1/include),) \
661 -I$(srctree)/arch/$(ARCH)/include \
662 -include $(srctree)/include/linux/kconfig.h
664 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
665 CHECKFLAGS += $(NOSTDINC_FLAGS)
668 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
670 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
672 #########################################################################
673 # U-Boot objects....order is important (i.e. start must be first)
675 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
678 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
679 libs-$(CONFIG_OF_EMBED) += dts/
684 libs-y += drivers/dma/
685 libs-y += drivers/gpio/
686 libs-y += drivers/i2c/
687 libs-y += drivers/mtd/
688 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
689 libs-y += drivers/mtd/onenand/
690 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
691 libs-y += drivers/mtd/spi/
692 libs-y += drivers/net/
693 libs-y += drivers/net/phy/
694 libs-y += drivers/pci/
695 libs-y += drivers/power/ \
696 drivers/power/domain/ \
697 drivers/power/fuel_gauge/ \
699 drivers/power/pmic/ \
700 drivers/power/battery/ \
701 drivers/power/regulator/
702 libs-y += drivers/spi/
703 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
704 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
705 libs-$(CONFIG_SYS_FSL_MMDC) += drivers/ddr/fsl/
706 libs-$(CONFIG_ALTERA_SDRAM) += drivers/ddr/altera/
707 libs-y += drivers/serial/
708 libs-y += drivers/usb/dwc3/
709 libs-y += drivers/usb/common/
710 libs-y += drivers/usb/emul/
711 libs-y += drivers/usb/eth/
712 libs-y += drivers/usb/gadget/
713 libs-y += drivers/usb/gadget/udc/
714 libs-y += drivers/usb/host/
715 libs-y += drivers/usb/musb/
716 libs-y += drivers/usb/musb-new/
717 libs-y += drivers/usb/phy/
718 libs-y += drivers/usb/ulpi/
722 libs-$(CONFIG_API) += api/
723 libs-$(CONFIG_HAS_POST) += post/
726 libs-$(CONFIG_UT_ENV) += test/env/
727 libs-$(CONFIG_UT_OVERLAY) += test/overlay/
729 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
731 libs-y := $(sort $(libs-y))
733 u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
735 u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
737 libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
739 u-boot-init := $(head-y)
740 u-boot-main := $(libs-y)
744 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
745 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
747 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
749 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
751 ifdef CONFIG_CC_COVERAGE
752 KBUILD_CFLAGS += --coverage
753 PLATFORM_LIBGCC += -lgcov
757 export PLATFORM_LIBGCC
759 # Special flags for CPP when processing the linker script.
760 # Pass the version down so we can handle backwards compatibility
763 -include $(srctree)/include/u-boot/u-boot.lds.h \
765 $(shell $(LD) --version | \
766 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
768 #########################################################################
769 #########################################################################
771 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
773 @actual=`wc -c $@ | awk '{print $$1}'`; \
774 limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
775 if test $$actual -gt $$limit; then \
776 echo "$@ exceeds file size limit:" >&2 ; \
777 echo " limit: $$limit bytes" >&2 ; \
778 echo " actual: $$actual bytes" >&2 ; \
779 echo " excess: $$((actual - limit)) bytes" >&2; \
786 # Statically apply RELA-style relocations (currently arm64 only)
787 # This is useful for arm64 where static relocation needs to be performed on
788 # the raw binary, but certain simulators only accept an ELF file (but don't
789 # do the relocation).
790 ifneq ($(CONFIG_STATIC_RELA),)
791 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
793 start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
794 end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
795 tools/relocate-rela $(2) $(3) $$start $$end
800 # Always append ALL so that arch config.mk's can add custom ones
801 ALL-y += u-boot.srec u-boot.bin u-boot.sym System.map binary_size_check
803 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
804 ifeq ($(CONFIG_SPL_FSL_PBL),y)
805 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
807 ifneq ($(CONFIG_SECURE_BOOT), y)
808 # For Secure Boot The Image needs to be signed and Header must also
809 # be included. So The image has to be built explicitly
810 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
813 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
814 ifeq ($(CONFIG_MX6)$(CONFIG_SECURE_BOOT), yy)
815 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img
817 ifeq ($(CONFIG_MX7)$(CONFIG_SECURE_BOOT), yy)
818 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img
820 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
823 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
824 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb
825 ifeq ($(CONFIG_SPL_FRAMEWORK),y)
826 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
828 ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
829 ifneq ($(CONFIG_SPL_TARGET),)
830 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
832 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
833 ALL-$(CONFIG_EFI_APP) += u-boot-app.efi
834 ALL-$(CONFIG_EFI_STUB) += u-boot-payload.efi
836 ifneq ($(BUILD_ROM)$(CONFIG_BUILD_ROM),)
837 ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
840 # Build a combined spl + u-boot image for sunxi
841 ifeq ($(CONFIG_ARCH_SUNXI)$(CONFIG_SPL),yy)
842 ALL-y += u-boot-sunxi-with-spl.bin
845 # enable combined SPL/u-boot/dtb rules for tegra
846 ifeq ($(CONFIG_TEGRA)$(CONFIG_SPL),yy)
847 ALL-y += u-boot-tegra.bin u-boot-nodtb-tegra.bin
848 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb-tegra.bin
851 # Add optional build target if defined in board/cpu/soc headers
852 ifneq ($(CONFIG_BUILD_TARGET),)
853 ALL-y += $(CONFIG_BUILD_TARGET:"%"=%)
856 ifneq ($(CONFIG_SYS_INIT_SP_BSS_OFFSET),)
857 ALL-y += init_sp_bss_offset_check
860 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
862 # Avoid 'Not enough room for program headers' error on binutils 2.28 onwards.
863 LDFLAGS_u-boot += $(call ld-option, --no-dynamic-linker)
865 ifeq ($(CONFIG_ARC)$(CONFIG_NIOS2)$(CONFIG_X86)$(CONFIG_XTENSA),)
866 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
869 # Normally we fill empty space with 0xff
870 quiet_cmd_objcopy = OBJCOPY $@
871 cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \
872 $(OBJCOPYFLAGS_$(@F)) $< $@
874 # Provide a version which does not do this, for use by EFI
875 quiet_cmd_zobjcopy = OBJCOPY $@
876 cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
878 quiet_cmd_efipayload = OBJCOPY $@
879 cmd_efipayload = $(OBJCOPY) -I binary -O $(EFIPAYLOAD_BFDTARGET) -B $(EFIPAYLOAD_BFDARCH) $< $@
881 MKIMAGEOUTPUT ?= /dev/null
883 quiet_cmd_mkimage = MKIMAGE $@
884 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
885 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
887 quiet_cmd_mkfitimage = MKIMAGE $@
888 cmd_mkfitimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -f $(U_BOOT_ITS) -E $@ \
889 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
891 quiet_cmd_cat = CAT $@
892 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
894 append = cat $(filter-out $< $(PHONY), $^) >> $@
896 quiet_cmd_pad_cat = CAT $@
897 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
901 quiet_cmd_cfgcheck = CFGCHK $2
902 cmd_cfgcheck = $(srctree)/scripts/check-config.sh $2 \
903 $(srctree)/scripts/config_whitelist.txt $(srctree)
906 ifeq ($(CONFIG_DM_I2C_COMPAT)$(CONFIG_SANDBOX),y)
907 @echo "===================== WARNING ======================"
908 @echo "This board uses CONFIG_DM_I2C_COMPAT. Please remove"
909 @echo "(possibly in a subsequent patch in your series)"
910 @echo "before sending patches to the mailing list."
911 @echo "===================================================="
913 @# Check that this build does not use CONFIG options that we do not
914 @# know about unless they are in Kconfig. All the existing CONFIG
915 @# options are whitelisted, so new ones should not be added.
916 $(call cmd,cfgcheck,u-boot.cfg)
922 $(Q)$(MAKE) $(build)=dts dtbs
924 quiet_cmd_copy = COPY $@
927 ifeq ($(CONFIG_MULTI_DTB_FIT),y)
929 fit-dtb.blob: dts/dt.dtb FORCE
930 $(call if_changed,mkimage)
932 MKIMAGEFLAGS_fit-dtb.blob = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
934 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) -d /dev/null
936 u-boot-fit-dtb.bin: u-boot-nodtb.bin fit-dtb.blob
937 $(call if_changed,cat)
939 u-boot.bin: u-boot-fit-dtb.bin FORCE
940 $(call if_changed,copy)
941 else ifeq ($(CONFIG_OF_SEPARATE),y)
942 u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE
943 $(call if_changed,cat)
945 u-boot.bin: u-boot-dtb.bin FORCE
946 $(call if_changed,copy)
948 u-boot.bin: u-boot-nodtb.bin FORCE
949 $(call if_changed,copy)
953 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
956 $(Q)$(MAKE) $(build)=arch/arm/cpu/armv7/vf610 $@
958 quiet_cmd_copy = COPY $@
961 u-boot.dtb: dts/dt.dtb
964 OBJCOPYFLAGS_u-boot.hex := -O ihex
966 OBJCOPYFLAGS_u-boot.srec := -O srec
968 u-boot.hex u-boot.srec: u-boot FORCE
969 $(call if_changed,objcopy)
971 OBJCOPYFLAGS_u-boot-elf.srec := $(OBJCOPYFLAGS_u-boot.srec)
973 u-boot-elf.srec: u-boot.elf FORCE
974 $(call if_changed,objcopy)
976 OBJCOPYFLAGS_u-boot-spl.srec = $(OBJCOPYFLAGS_u-boot.srec)
978 spl/u-boot-spl.srec: spl/u-boot-spl FORCE
979 $(call if_changed,objcopy)
981 OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \
982 $(if $(CONFIG_X86_16BIT_INIT),-R .start16 -R .resetvec)
984 binary_size_check: u-boot-nodtb.bin FORCE
985 @file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \
986 map_size=$(shell cat u-boot.map | \
987 awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
990 if [ "" != "$$map_size" ]; then \
991 if test $$map_size -ne $$file_size; then \
992 echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
993 echo " but u-boot-nodtb.bin shows $$file_size" >&2 ; \
998 ifneq ($(CONFIG_SYS_INIT_SP_BSS_OFFSET),)
999 ifneq ($(CONFIG_SYS_MALLOC_F_LEN),)
1000 subtract_sys_malloc_f_len = space=$$(($${space} - $(CONFIG_SYS_MALLOC_F_LEN)))
1002 subtract_sys_malloc_f_len = true
1004 # The 1/4 margin below is somewhat arbitrary. The likely initial SP usage is
1005 # so low that the DTB could probably use 90%+ of the available space, for
1006 # current values of CONFIG_SYS_INIT_SP_BSS_OFFSET at least. However, let's be
1007 # safe for now and tweak this later if space becomes tight.
1008 # A rejected alternative would be to check that some absolute minimum stack
1009 # space was available. However, since CONFIG_SYS_INIT_SP_BSS_OFFSET is
1010 # deliberately build-specific, to take account of build-to-build stack usage
1011 # differences due to different feature sets, there is no common absolute value
1013 init_sp_bss_offset_check: u-boot.dtb FORCE
1014 @dtb_size=$(shell wc -c u-boot.dtb | awk '{print $$1}') ; \
1015 space=$(CONFIG_SYS_INIT_SP_BSS_OFFSET) ; \
1016 $(subtract_sys_malloc_f_len) ; \
1017 quarter_space=$$(($${space} / 4)) ; \
1018 if [ $${dtb_size} -gt $${quarter_space} ]; then \
1019 echo "u-boot.dtb is larger than 1 quarter of " >&2 ; \
1020 echo "(CONFIG_SYS_INIT_SP_BSS_OFFSET - CONFIG_SYS_MALLOC_F_LEN)" >&2 ; \
1025 u-boot-nodtb.bin: u-boot FORCE
1026 $(call if_changed,objcopy)
1027 $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
1032 $(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS)
1036 # ---------------------------------------------------------------------------
1037 quiet_cmd_binman = BINMAN $@
1038 cmd_binman = $(srctree)/tools/binman/binman -d u-boot.dtb -O . \
1039 -I . -I $(srctree)/board/$(BOARDDIR) $<
1041 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
1043 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
1045 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
1046 $(call if_changed,objcopy)
1049 # U-Boot entry point, needed for booting of full-blown U-Boot
1050 # from the SPL U-Boot version.
1052 ifndef CONFIG_SYS_UBOOT_START
1053 CONFIG_SYS_UBOOT_START := 0
1056 # Boards with more complex image requirments can provide an .its source file
1057 # or a generator script
1058 ifneq ($(CONFIG_SPL_FIT_SOURCE),"")
1059 U_BOOT_ITS = $(subst ",,$(CONFIG_SPL_FIT_SOURCE))
1061 ifneq ($(CONFIG_SPL_FIT_GENERATOR),"")
1062 U_BOOT_ITS := u-boot.its
1063 $(U_BOOT_ITS): FORCE
1064 $(srctree)/$(CONFIG_SPL_FIT_GENERATOR) \
1065 $(patsubst %,arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) > $@
1069 ifdef CONFIG_SPL_LOAD_FIT
1070 MKIMAGEFLAGS_u-boot.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
1071 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1072 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \
1073 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST)))
1075 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
1076 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1077 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
1078 MKIMAGEFLAGS_u-boot-ivt.img = -A $(ARCH) -T firmware_ivt -C none -O u-boot \
1079 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1080 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
1081 u-boot-ivt.img: MKIMAGEOUTPUT = u-boot-ivt.img.log
1082 CLEAN_FILES += u-boot-ivt.img.log u-boot-dtb.imx.log SPL.log u-boot.imx.log
1085 MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
1087 MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
1088 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
1090 MKIMAGEFLAGS_u-boot-spl.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
1091 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \
1092 $(if $(KEYDIR),-k $(KEYDIR))
1094 MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1095 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
1097 u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl u-boot-ivt.img: \
1098 $(if $(CONFIG_SPL_LOAD_FIT),u-boot-nodtb.bin dts/dt.dtb,u-boot.bin) FORCE
1099 $(call if_changed,mkimage)
1101 u-boot.itb: u-boot-nodtb.bin dts/dt.dtb $(U_BOOT_ITS) FORCE
1102 $(call if_changed,mkfitimage)
1105 u-boot-spl.kwb: u-boot.img spl/u-boot-spl.bin FORCE
1106 $(call if_changed,mkimage)
1108 u-boot.sha1: u-boot.bin
1109 tools/ubsha1 u-boot.bin
1112 $(OBJDUMP) -d $< > $@
1115 SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
1117 SPL_PAYLOAD := u-boot.bin
1120 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
1121 --pad-to=$(CONFIG_SPL_PAD_TO)
1122 u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
1123 $(call if_changed,pad_cat)
1125 MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE)
1127 lpc32xx-spl.img: spl/u-boot-spl.bin FORCE
1128 $(call if_changed,mkimage)
1130 OBJCOPYFLAGS_lpc32xx-boot-0.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1132 lpc32xx-boot-0.bin: lpc32xx-spl.img FORCE
1133 $(call if_changed,objcopy)
1135 OBJCOPYFLAGS_lpc32xx-boot-1.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1137 lpc32xx-boot-1.bin: lpc32xx-spl.img FORCE
1138 $(call if_changed,objcopy)
1140 lpc32xx-full.bin: lpc32xx-boot-0.bin lpc32xx-boot-1.bin u-boot.img FORCE
1141 $(call if_changed,cat)
1143 CLEAN_FILES += lpc32xx-*
1145 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
1146 --pad-to=$(CONFIG_TPL_PAD_TO)
1147 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
1148 $(call if_changed,pad_cat)
1150 SPL: spl/u-boot-spl.bin FORCE
1151 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1153 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
1154 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1156 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
1158 u-boot.ubl: u-boot-with-spl.bin FORCE
1159 $(call if_changed,mkimage)
1161 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
1162 $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
1163 -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
1164 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
1165 $(call if_changed,mkimage)
1167 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1168 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
1169 $(call if_changed,pad_cat)
1171 u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
1172 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
1173 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
1174 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
1176 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
1177 # Both images are created using mkimage (crc etc), so that the ROM
1178 # bootloader can check its integrity. Padding needs to be done to the
1179 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
1180 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
1181 # The resulting image containing both U-Boot images is called u-boot.spr
1182 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
1183 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
1184 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
1185 $(call if_changed,mkimage)
1187 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1189 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
1190 $(call if_changed,pad_cat)
1192 ifneq ($(CONFIG_ARCH_SOCFPGA),)
1193 quiet_cmd_socboot = SOCBOOT $@
1194 cmd_socboot = cat spl/u-boot-spl.sfp spl/u-boot-spl.sfp \
1195 spl/u-boot-spl.sfp spl/u-boot-spl.sfp \
1196 u-boot.img > $@ || rm -f $@
1197 u-boot-with-spl.sfp: spl/u-boot-spl.sfp u-boot.img FORCE
1198 $(call if_changed,socboot)
1201 # x86 uses a large ROM. We fill it with 0xff, put the 16-bit stuff (including
1202 # reset vector) at the top, Intel ME descriptor at the bottom, and U-Boot in
1203 # the middle. This is handled by binman based on an image description in the
1204 # board's device tree.
1205 ifneq ($(CONFIG_X86_RESET_VECTOR),)
1206 rom: u-boot.rom FORCE
1208 refcode.bin: $(srctree)/board/$(BOARDDIR)/refcode.bin FORCE
1209 $(call if_changed,copy)
1211 quiet_cmd_ldr = LD $@
1212 cmd_ldr = $(LD) $(LDFLAGS_$(@F)) \
1213 $(filter-out FORCE,$^) -o $@
1215 u-boot.rom: u-boot-x86-16bit.bin u-boot.bin \
1216 $(if $(CONFIG_SPL_X86_16BIT_INIT),spl/u-boot-spl.bin) \
1217 $(if $(CONFIG_HAVE_REFCODE),refcode.bin) FORCE
1218 $(call if_changed,binman)
1220 OBJCOPYFLAGS_u-boot-x86-16bit.bin := -O binary -j .start16 -j .resetvec
1221 u-boot-x86-16bit.bin: u-boot FORCE
1222 $(call if_changed,objcopy)
1225 ifneq ($(CONFIG_ARCH_SUNXI),)
1226 ifeq ($(CONFIG_ARM64),)
1227 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img u-boot.dtb FORCE
1228 $(call if_changed,binman)
1230 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.itb FORCE
1231 $(call if_changed,cat)
1235 ifneq ($(CONFIG_TEGRA),)
1236 ifneq ($(CONFIG_BINMAN),)
1237 u-boot-dtb-tegra.bin u-boot-tegra.bin u-boot-nodtb-tegra.bin: \
1238 spl/u-boot-spl u-boot.bin FORCE
1239 $(call if_changed,binman)
1241 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1242 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot-nodtb.bin FORCE
1243 $(call if_changed,pad_cat)
1245 OBJCOPYFLAGS_u-boot-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1246 u-boot-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
1247 $(call if_changed,pad_cat)
1249 u-boot-dtb-tegra.bin: u-boot-tegra.bin FORCE
1250 $(call if_changed,copy)
1254 OBJCOPYFLAGS_u-boot-app.efi := $(OBJCOPYFLAGS_EFI)
1255 u-boot-app.efi: u-boot FORCE
1256 $(call if_changed,zobjcopy)
1258 u-boot.bin.o: u-boot.bin FORCE
1259 $(call if_changed,efipayload)
1261 u-boot-payload.lds: $(LDSCRIPT_EFI) FORCE
1262 $(call if_changed_dep,cpp_lds)
1264 # Rule to link the EFI payload which contains a stub and a U-Boot binary
1265 quiet_cmd_u-boot_payload ?= LD $@
1266 cmd_u-boot_payload ?= $(LD) $(LDFLAGS_EFI_PAYLOAD) -o $@ \
1267 -T u-boot-payload.lds arch/x86/cpu/call32.o \
1268 lib/efi/efi.o lib/efi/efi_stub.o u-boot.bin.o \
1269 $(addprefix arch/$(ARCH)/lib/,$(EFISTUB))
1271 u-boot-payload: u-boot.bin.o u-boot-payload.lds FORCE
1272 $(call if_changed,u-boot_payload)
1274 OBJCOPYFLAGS_u-boot-payload.efi := $(OBJCOPYFLAGS_EFI)
1275 u-boot-payload.efi: u-boot-payload FORCE
1276 $(call if_changed,zobjcopy)
1278 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
1279 $(call if_changed,cat)
1281 #Add a target to create boot binary having SPL binary in PBI format
1282 #concatenated with u-boot binary. It is need by PowerPC SoC having
1283 #internal SRAM <= 512KB.
1284 MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1285 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \
1286 -A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE)
1288 spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
1289 $(call if_changed,mkimage)
1292 UBOOT_BINLOAD := u-boot.img
1294 UBOOT_BINLOAD := u-boot.bin
1297 OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1300 u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE
1301 $(call if_changed,pad_cat)
1303 # PPC4xx needs the SPL at the end of the image, since the reset vector
1304 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
1305 # and need to introduce a new build target with the full blown U-Boot
1306 # at the start padded up to the start of the SPL image. And then concat
1307 # the SPL image to the end.
1309 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
1310 --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
1311 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
1312 $(call if_changed,pad_cat)
1314 # Create a new ELF from a raw binary file.
1315 ifndef PLATFORM_ELFENTRY
1316 PLATFORM_ELFENTRY = "_start"
1318 quiet_cmd_u-boot-elf ?= LD $@
1319 cmd_u-boot-elf ?= $(LD) u-boot-elf.o -o $@ \
1320 --defsym=$(PLATFORM_ELFENTRY)=$(CONFIG_SYS_TEXT_BASE) \
1321 -Ttext=$(CONFIG_SYS_TEXT_BASE)
1322 u-boot.elf: u-boot.bin
1323 $(Q)$(OBJCOPY) -I binary $(PLATFORM_ELFFLAGS) $< u-boot-elf.o
1324 $(call if_changed,u-boot-elf)
1326 ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(ARCH)/Makefile.postlink)
1328 # Rule to link u-boot
1329 # May be overridden by arch/$(ARCH)/config.mk
1330 quiet_cmd_u-boot__ ?= LD $@
1331 cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
1332 -T u-boot.lds $(u-boot-init) \
1333 --start-group $(u-boot-main) --end-group \
1334 $(PLATFORM_LIBS) -Map u-boot.map; \
1335 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
1337 quiet_cmd_smap = GEN common/system_map.o
1339 smap=`$(call SYSTEM_MAP,u-boot) | \
1340 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
1341 $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
1342 -c $(srctree)/common/system_map.c -o common/system_map.o
1344 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds FORCE
1345 +$(call if_changed,u-boot__)
1346 ifeq ($(CONFIG_KALLSYMS),y)
1348 $(call cmd,u-boot__) common/system_map.o
1351 ifeq ($(CONFIG_RISCV),y)
1352 @tools/prelink-riscv $@ 0
1355 quiet_cmd_sym ?= SYM $@
1356 cmd_sym ?= $(OBJDUMP) -t $< > $@
1357 u-boot.sym: u-boot FORCE
1358 $(call if_changed,sym)
1360 # The actual objects are generated when descending,
1361 # make sure no implicit rule kicks in
1362 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
1364 # Handle descending into subdirectories listed in $(vmlinux-dirs)
1365 # Preset locale variables to speed up the build process. Limit locale
1366 # tweaks to this spot to avoid wrong language settings when running
1367 # make menuconfig etc.
1368 # Error messages still appears in the original language
1370 PHONY += $(u-boot-dirs)
1371 $(u-boot-dirs): prepare scripts
1372 $(Q)$(MAKE) $(build)=$@
1375 # The "tools" are needed early
1376 $(filter-out tools, $(u-boot-dirs)): tools
1377 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
1378 # is "yes"), so compile examples after U-Boot is compiled.
1379 examples: $(filter-out examples, $(u-boot-dirs))
1381 define filechk_uboot.release
1382 echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1385 # Store (new) UBOOTRELEASE string in include/config/uboot.release
1386 include/config/uboot.release: include/config/auto.conf FORCE
1387 $(call filechk,uboot.release)
1390 # Things we need to do before we recursively start building the kernel
1391 # or the modules are listed in "prepare".
1392 # A multi level approach is used. prepareN is processed before prepareN-1.
1393 # archprepare is used in arch Makefiles and when processed asm symlink,
1394 # version.h and scripts_basic is processed / created.
1396 # Listed in dependency order
1397 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1399 # prepare3 is used to check if we are building in a separate output directory,
1401 # 1) Check that make has not been executed in the kernel src $(srctree)
1402 prepare3: include/config/uboot.release
1403 ifneq ($(KBUILD_SRC),)
1404 @$(kecho) ' Using $(srctree) as source for U-Boot'
1405 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
1406 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
1407 echo >&2 " in the '$(srctree)' directory.";\
1412 # prepare2 creates a makefile if using a separate output directory
1413 prepare2: prepare3 outputmakefile
1415 prepare1: prepare2 $(version_h) $(timestamp_h) \
1416 include/config/auto.conf
1417 ifeq ($(wildcard $(LDSCRIPT)),)
1418 @echo >&2 " Could not find linker script."
1422 ifeq ($(CONFIG_USE_DEFAULT_ENV_FILE),y)
1423 prepare1: $(defaultenv_h)
1426 archprepare: prepare1 scripts_basic
1428 prepare0: archprepare FORCE
1429 $(Q)$(MAKE) $(build)=.
1431 # All the preparing..
1434 # Generate some files
1435 # ---------------------------------------------------------------------------
1437 define filechk_version.h
1438 (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1439 echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1440 echo \#define CC_VERSION_STRING \"$$(LC_ALL=C $(CC) --version | head -n 1)\"; \
1441 echo \#define LD_VERSION_STRING \"$$(LC_ALL=C $(LD) --version | head -n 1)\"; )
1444 # The SOURCE_DATE_EPOCH mechanism requires a date that behaves like GNU date.
1445 # The BSD date on the other hand behaves different and would produce errors
1446 # with the misused '-d' switch. Respect that and search a working date with
1447 # well known pre- and suffixes for the GNU variant of date.
1448 define filechk_timestamp.h
1449 (if test -n "$${SOURCE_DATE_EPOCH}"; then \
1450 SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \
1452 for date in gdate date.gnu date; do \
1453 $${date} -u -d "$${SOURCE_DATE}" >/dev/null 2>&1 && DATE="$${date}"; \
1455 if test -n "$${DATE}"; then \
1456 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DATE "%b %d %C%y"'; \
1457 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TIME "%T"'; \
1458 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TZ "%z"'; \
1459 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1460 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \
1465 LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1466 LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \
1467 LC_ALL=C date +'#define U_BOOT_TZ "%z"'; \
1468 LC_ALL=C date +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1469 LC_ALL=C date +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \
1473 define filechk_defaultenv.h
1477 sed -e 's/\\\x0/\n/' | \
1478 xxd -i ; echo ", 0x00" ; )
1481 $(version_h): include/config/uboot.release FORCE
1482 $(call filechk,version.h)
1484 $(timestamp_h): $(srctree)/Makefile FORCE
1485 $(call filechk,timestamp.h)
1487 $(defaultenv_h): $(CONFIG_DEFAULT_ENV_FILE:"%"=%) FORCE
1488 $(call filechk,defaultenv.h)
1490 # ---------------------------------------------------------------------------
1491 quiet_cmd_cpp_lds = LDS $@
1492 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) \
1493 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
1495 u-boot.lds: $(LDSCRIPT) prepare FORCE
1496 $(call if_changed_dep,cpp_lds)
1498 spl/u-boot-spl.bin: spl/u-boot-spl
1500 spl/u-boot-spl: tools prepare \
1501 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb) \
1502 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_TPL_OF_PLATDATA),dts/dt.dtb)
1503 $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all
1505 spl/sunxi-spl.bin: spl/u-boot-spl
1508 spl/sunxi-spl-with-ecc.bin: spl/sunxi-spl.bin
1511 spl/u-boot-spl.sfp: spl/u-boot-spl
1514 spl/boot.bin: spl/u-boot-spl
1517 tpl/u-boot-tpl.bin: tools prepare \
1518 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb)
1519 $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
1521 TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
1527 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1528 -name '*.[chS]' -print`
1532 etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1533 -name '*.[chS]' -print`
1535 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1541 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1544 @$(call SYSTEM_MAP,$<) > $@
1546 #########################################################################
1548 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1549 # R_AARCH64_RELATIVE (64-bit).
1550 checkarmreloc: u-boot
1551 @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1552 grep R_A | sort -u`"; \
1553 if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1554 "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1555 echo "$< contains unexpected relocations: $$RELOC"; \
1559 envtools: scripts_basic $(version_h) $(timestamp_h)
1560 $(Q)$(MAKE) $(build)=tools/env
1562 tools-only: scripts_basic $(version_h) $(timestamp_h)
1563 $(Q)$(MAKE) $(build)=tools
1565 tools-all: export HOST_TOOLS_ALL=y
1566 tools-all: envtools tools ;
1568 cross_tools: export CROSS_BUILD_TOOLS=y
1569 cross_tools: tools ;
1573 git log --no-merges U-Boot-1_1_5.. | \
1574 unexpand -a | sed -e 's/\s\s*$$//' > $@
1576 #########################################################################
1579 # Cleaning is done on three levels.
1580 # make clean Delete most generated files
1581 # Leave enough to build external modules
1582 # make mrproper Delete the current configuration, and all generated files
1583 # make distclean Remove editor backup files, patch leftover files and the like
1585 # Directories & files removed with 'make clean'
1586 CLEAN_DIRS += $(MODVERDIR) \
1587 $(foreach d, spl tpl, $(patsubst %,$d/%, \
1588 $(filter-out include, $(shell ls -1 $d 2>/dev/null))))
1590 CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h \
1591 boot* u-boot* MLO* SPL System.map fit-dtb.blob
1593 # Directories & files removed with 'make mrproper'
1594 MRPROPER_DIRS += include/config include/generated spl tpl \
1596 MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \
1597 ctags etags tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
1599 # clean - Delete most, but leave enough to build external modules
1601 clean: rm-dirs := $(CLEAN_DIRS)
1602 clean: rm-files := $(CLEAN_FILES)
1604 clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
1606 clean-dirs := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
1608 PHONY += $(clean-dirs) clean archclean
1610 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1612 clean: $(clean-dirs)
1615 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1616 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1617 -o -name '*.ko.*' -o -name '*.su' \
1618 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1619 -o -name '*.lex.c' -o -name '*.tab.[ch]' \
1620 -o -name '*.symtypes' -o -name 'modules.order' \
1621 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1622 -o -name 'dsdt.aml' -o -name 'dsdt.asl.tmp' -o -name 'dsdt.c' \
1623 -o -name '*.efi' -o -name '*.gcno' -o -name '*.so' \) \
1624 -type f -print | xargs rm -f
1626 # mrproper - Delete all generated files, including .config
1628 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1629 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1630 mrproper-dirs := $(addprefix _mrproper_,scripts)
1632 PHONY += $(mrproper-dirs) mrproper archmrproper
1634 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1636 mrproper: clean $(mrproper-dirs)
1639 @rm -f arch/*/include/asm/arch
1646 @find $(srctree) $(RCS_FIND_IGNORE) \
1647 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1648 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1649 -o -name '.*.rej' -o -name '*%' -o -name 'core' \
1650 -o -name '*.pyc' \) \
1651 -type f -print | xargs rm -f
1655 F=`basename $(srctree)` ; cd .. ; \
1656 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1659 @echo 'Cleaning targets:'
1660 @echo ' clean - Remove most generated files but keep the config'
1661 @echo ' mrproper - Remove all generated files + config + various backup files'
1662 @echo ' distclean - mrproper + remove editor backup and patch files'
1664 @echo 'Configuration targets:'
1665 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1667 @echo 'Other generic targets:'
1668 @echo ' all - Build all necessary images depending on configuration'
1669 @echo ' tests - Build U-Boot for sandbox and run tests'
1670 @echo '* u-boot - Build the bare u-boot'
1671 @echo ' dir/ - Build all files in dir and below'
1672 @echo ' dir/file.[oisS] - Build specified target only'
1673 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1674 @echo ' (requires a recent binutils and recent build (System.map))'
1675 @echo ' tags/ctags - Generate ctags file for editors'
1676 @echo ' etags - Generate etags file for editors'
1677 @echo ' cscope - Generate cscope index'
1678 @echo ' ubootrelease - Output the release version string (use with make -s)'
1679 @echo ' ubootversion - Output the version stored in Makefile (use with make -s)'
1680 @echo " cfg - Don't build, just create the .cfg files"
1681 @echo " envtools - Build only the target-side environment tools"
1683 @echo 'Static analysers'
1684 @echo ' checkstack - Generate a list of stack hogs'
1685 @echo ' coccicheck - Execute static code analysis with Coccinelle'
1687 @echo 'Documentation targets:'
1688 @$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
1690 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1691 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1692 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1693 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1694 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1695 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1696 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1697 @echo ' 1: warnings which may be relevant and do not occur too often'
1698 @echo ' 2: warnings which occur quite often but may still be relevant'
1699 @echo ' 3: more obscure warnings, can most likely be ignored'
1700 @echo ' Multiple levels can be combined with W=12 or W=123'
1702 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1703 @echo 'For further info see the ./README file'
1708 # Documentation targets
1709 # ---------------------------------------------------------------------------
1710 %docs: scripts_basic FORCE
1711 $(Q)$(MAKE) $(build)=scripts build_docproc
1712 $(Q)$(MAKE) $(build)=doc/DocBook $@
1714 endif #ifeq ($(config-targets),1)
1715 endif #ifeq ($(mixed-targets),1)
1717 PHONY += checkstack ubootrelease ubootversion
1720 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1721 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1724 @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1727 @echo $(UBOOTVERSION)
1730 # ---------------------------------------------------------------------------
1731 # Single targets are compatible with:
1732 # - build with mixed source and output
1733 # - build with separate output dir 'make O=...'
1734 # - external modules
1736 # target-dir => where to store outputfile
1737 # build-dir => directory in kernel source tree to use
1739 ifeq ($(KBUILD_EXTMOD),)
1740 build-dir = $(patsubst %/,%,$(dir $@))
1741 target-dir = $(dir $@)
1743 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1744 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1745 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1748 %.s: %.c prepare scripts FORCE
1749 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1750 %.i: %.c prepare scripts FORCE
1751 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1752 %.o: %.c prepare scripts FORCE
1753 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1754 %.lst: %.c prepare scripts FORCE
1755 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1756 %.s: %.S prepare scripts FORCE
1757 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1758 %.o: %.S prepare scripts FORCE
1759 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1760 %.symtypes: %.c prepare scripts FORCE
1761 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1764 /: prepare scripts FORCE
1766 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1767 $(build)=$(build-dir)
1768 %/: prepare scripts FORCE
1770 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1771 $(build)=$(build-dir)
1772 %.ko: prepare scripts FORCE
1774 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1775 $(build)=$(build-dir) $(@:.ko=.o)
1776 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1778 # Consistency checks
1779 # ---------------------------------------------------------------------------
1784 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
1786 # FIXME Should go into a make.lib or something
1787 # ===========================================================================
1789 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1790 cmd_rmdirs = rm -rf $(rm-dirs)
1792 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1793 cmd_rmfiles = rm -f $(rm-files)
1795 # read all saved command lines
1797 targets := $(wildcard $(sort $(targets)))
1798 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1800 ifneq ($(cmd_files),)
1801 $(cmd_files): ; # Do not try to update included dependency files
1802 include $(cmd_files)
1805 endif # skip-makefile
1810 # Declare the contents of the .PHONY variable as phony. We keep that
1811 # information in a variable so we can use it in if_changed and friends.