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 $(CONFIG_TOOLS_DEBUG),-g)
261 # With the move to GCC 6, we have implicitly upgraded our language
262 # standard to GNU11 (see https://gcc.gnu.org/gcc-5/porting_to.html).
263 # Some Linux distributions (including RHEL7, SLES13, Debian 8) still
264 # have older compilers as their default, so we make it explicit for
265 # these that our host tools are GNU11 (i.e. C11 w/ GNU extensions).
266 ifeq ($(HOSTOS),linux)
267 HOSTCFLAGS += --std=gnu11
270 ifeq ($(HOSTOS),cygwin)
274 # Mac OS X / Darwin's C preprocessor is Apple specific. It
275 # generates numerous errors and warnings. We want to bypass it
276 # and use GNU C's cpp. To do this we pass the -traditional-cpp
277 # option to the compiler. Note that the -traditional-cpp flag
278 # DOES NOT have the same semantics as GNU C's flag, all it does
279 # is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
281 # Apple's linker is similar, thanks to the new 2 stage linking
282 # multiple symbol definitions are treated as errors, hence the
283 # -multiply_defined suppress option to turn off this error.
285 ifeq ($(HOSTOS),darwin)
286 # get major and minor product version (e.g. '10' and '6' for Snow Leopard)
287 DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.')
288 DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.')
290 os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
291 $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
293 # Snow Leopards build environment has no longer restrictions as described above
294 HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc")
295 HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp")
296 HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
298 # since Lion (10.7) ASLR is on by default, but we use linker generated lists
299 # in some host tools which is a problem then ... so disable ASLR for these
301 HOSTLDFLAGS += $(call os_x_before, 10, 7, "", "-Xlinker -no_pie")
304 # Decide whether to build built-in, modular, or both.
305 # Normally, just do built-in.
310 # If we have only "make modules", don't compile built-in objects.
311 # When we're building modules with modversions, we need to consider
312 # the built-in objects during the descend as well, in order to
313 # make sure the checksums are up to date before we record them.
315 ifeq ($(MAKECMDGOALS),modules)
316 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
319 # If we have "make <whatever> modules", compile modules
320 # in addition to whatever we do anyway.
321 # Just "make" or "make all" shall build modules as well
323 # U-Boot does not need modules
324 #ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
325 # KBUILD_MODULES := 1
328 #ifeq ($(MAKECMDGOALS),)
329 # KBUILD_MODULES := 1
332 export KBUILD_MODULES KBUILD_BUILTIN
333 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
335 # We need some generic definitions (do not try to remake the file).
336 scripts/Kbuild.include: ;
337 include scripts/Kbuild.include
339 # Make variables (CC, etc...)
341 AS = $(CROSS_COMPILE)as
343 ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
344 LD = $(CROSS_COMPILE)ld.bfd
346 LD = $(CROSS_COMPILE)ld
348 CC = $(CROSS_COMPILE)gcc
350 AR = $(CROSS_COMPILE)ar
351 NM = $(CROSS_COMPILE)nm
352 LDR = $(CROSS_COMPILE)ldr
353 STRIP = $(CROSS_COMPILE)strip
354 OBJCOPY = $(CROSS_COMPILE)objcopy
355 OBJDUMP = $(CROSS_COMPILE)objdump
359 DTC ?= $(objtree)/scripts/dtc/dtc
362 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
363 -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
365 KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__
367 KBUILD_CFLAGS := -Wall -Wstrict-prototypes \
368 -Wno-format-security \
369 -fno-builtin -ffreestanding
370 KBUILD_CFLAGS += -fshort-wchar
371 KBUILD_AFLAGS := -D__ASSEMBLY__
373 # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
374 UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
375 UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
377 export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
378 export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
379 export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
380 export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
381 export MAKE AWK PERL PYTHON
382 export HOSTCXX HOSTCXXFLAGS CHECK CHECKFLAGS DTC DTC_FLAGS
384 export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
385 export KBUILD_CFLAGS KBUILD_AFLAGS
387 # When compiling out-of-tree modules, put MODVERDIR in the module
388 # tree rather than in the kernel tree. The kernel tree might
390 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
392 # Files to ignore in find ... statements
394 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
395 -name CVS -o -name .pc -o -name .hg -o -name .git \) \
397 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
398 --exclude CVS --exclude .pc --exclude .hg --exclude .git
400 # ===========================================================================
401 # Rules shared between *config targets and build targets
403 # Basic helpers built in scripts/
404 PHONY += scripts_basic
406 $(Q)$(MAKE) $(build)=scripts/basic
407 $(Q)rm -f .tmp_quiet_recordmcount
409 # To avoid any implicit rule to kick in, define an empty command.
410 scripts/basic/%: scripts_basic ;
412 PHONY += outputmakefile
413 # outputmakefile generates a Makefile in the output directory, if using a
414 # separate output directory. This allows convenient use of make in the
417 ifneq ($(KBUILD_SRC),)
418 $(Q)ln -fsn $(srctree) source
419 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
420 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
423 # To make sure we do not include .config for any of the *config targets
424 # catch them early, and hand them over to scripts/kconfig/Makefile
425 # It is allowed to specify more targets when calling make, including
426 # mixing *config targets and build targets.
427 # For example 'make oldconfig all'.
428 # Detect when mixed targets is specified, and make a second invocation
429 # of make so .config is not included in this case either (for *config).
431 version_h := include/generated/version_autogenerated.h
432 timestamp_h := include/generated/timestamp_autogenerated.h
433 defaultenv_h := include/generated/defaultenv_autogenerated.h
435 no-dot-config-targets := clean clobber mrproper distclean \
436 help %docs check% coccicheck \
437 ubootversion backup tests
443 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
444 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
449 ifeq ($(KBUILD_EXTMOD),)
450 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
452 ifneq ($(words $(MAKECMDGOALS)),1)
458 ifeq ($(mixed-targets),1)
459 # ===========================================================================
460 # We're called with mixed targets (*config and build targets).
461 # Handle them one by one.
463 PHONY += $(MAKECMDGOALS) __build_one_by_one
465 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
470 for i in $(MAKECMDGOALS); do \
471 $(MAKE) -f $(srctree)/Makefile $$i; \
475 ifeq ($(config-targets),1)
476 # ===========================================================================
477 # *config targets only - make sure prerequisites are updated, and descend
478 # in scripts/kconfig to make the *config target
480 KBUILD_DEFCONFIG := sandbox_defconfig
481 export KBUILD_DEFCONFIG KBUILD_KCONFIG
483 config: scripts_basic outputmakefile FORCE
484 $(Q)$(MAKE) $(build)=scripts/kconfig $@
486 %config: scripts_basic outputmakefile FORCE
487 $(Q)$(MAKE) $(build)=scripts/kconfig $@
490 # ===========================================================================
491 # Build targets only - this includes vmlinux, arch specific targets, clean
492 # targets and others. In general all targets except *config targets.
494 # Additional helpers built in scripts/
495 # Carefully list dependencies so we do not try to build scripts twice
498 scripts: scripts_basic include/config/auto.conf
499 $(Q)$(MAKE) $(build)=$(@)
501 ifeq ($(dot-config),1)
503 -include include/config/auto.conf
505 # Read in dependencies to all Kconfig* files, make sure to run
506 # oldconfig if changes are detected.
507 -include include/config/auto.conf.cmd
509 # To avoid any implicit rule to kick in, define an empty command
510 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
512 # If .config is newer than include/config/auto.conf, someone tinkered
513 # with it and forgot to run make oldconfig.
514 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
515 # we execute the config step to be sure to catch updated Kconfig files
516 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
517 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
518 @# If the following part fails, include/config/auto.conf should be
519 @# deleted so "make silentoldconfig" will be re-run on the next build.
520 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf || \
521 { rm -f include/config/auto.conf; false; }
522 @# include/config.h has been updated after "make silentoldconfig".
523 @# We need to touch include/config/auto.conf so it gets newer
524 @# than include/config.h.
525 @# Otherwise, 'make silentoldconfig' would be invoked twice.
526 $(Q)touch include/config/auto.conf
528 u-boot.cfg spl/u-boot.cfg tpl/u-boot.cfg: include/config.h FORCE
529 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf $(@)
531 -include include/autoconf.mk
532 -include include/autoconf.mk.dep
534 # We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf
535 # is up-to-date. When we switch to a different board configuration, old CONFIG
536 # macros are still remaining in include/config/auto.conf. Without the following
537 # gimmick, wrong config.mk would be included leading nasty warnings/errors.
538 ifneq ($(wildcard $(KCONFIG_CONFIG)),)
539 ifneq ($(wildcard include/config/auto.conf),)
540 autoconf_is_old := $(shell find . -path ./$(KCONFIG_CONFIG) -newer \
541 include/config/auto.conf)
542 ifeq ($(autoconf_is_old),)
544 include arch/$(ARCH)/Makefile
549 # These are set by the arch-specific config.mk. Make sure they are exported
550 # so they can be used when building an EFI application.
551 export EFI_LDS # Filename of EFI link script in arch/$(ARCH)/lib
552 export EFI_CRT0 # Filename of EFI CRT0 in arch/$(ARCH)/lib
553 export EFI_RELOC # Filename of EFU relocation code in arch/$(ARCH)/lib
554 export CFLAGS_EFI # Compiler flags to add when building EFI app
555 export CFLAGS_NON_EFI # Compiler flags to remove when building EFI app
556 export EFI_TARGET # binutils target if EFI is natively supported
558 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
559 # that (or fail if absent). Otherwise, search for a linker script in a
563 #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
564 ifdef CONFIG_SYS_LDSCRIPT
565 # need to strip off double quotes
566 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
570 # If there is no specified link script, we look in a number of places for it
572 ifeq ($(wildcard $(LDSCRIPT)),)
573 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
575 ifeq ($(wildcard $(LDSCRIPT)),)
576 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
578 ifeq ($(wildcard $(LDSCRIPT)),)
579 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
584 # Dummy target needed, because used as prerequisite
585 include/config/auto.conf: ;
586 endif # $(dot-config)
589 # Xtensa linker script cannot be preprocessed with -ansi because of
590 # preprocessor operations on strings that don't make C identifiers.
592 ifeq ($(CONFIG_XTENSA),)
596 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
602 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
603 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks)
605 # change __FILE__ to the relative path from the srctree
606 KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
609 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
610 # option to the assembler.
613 # Report stack usage if supported
614 # ARC tools based on GCC 7.1 has an issue with stack usage
615 # with naked functions, see commit message for more details
617 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
618 KBUILD_CFLAGS += -fstack-usage
622 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
623 ifeq ($(cc-name),clang)
624 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
625 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
626 KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
627 KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
628 KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
631 # turn jbsr into jsr for m68k
633 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
634 KBUILD_AFLAGS += -Wa,-gstabs,-S
638 # Prohibit date/time macros, which would make the build non-deterministic
639 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
641 include scripts/Makefile.extrawarn
643 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
644 KBUILD_CPPFLAGS += $(KCPPFLAGS)
645 KBUILD_AFLAGS += $(KAFLAGS)
646 KBUILD_CFLAGS += $(KCFLAGS)
648 # Use UBOOTINCLUDE when you must reference the include/ directory.
649 # Needed to be compatible with the O= option
652 $(if $(KBUILD_SRC), -I$(srctree)/include) \
653 $(if $(CONFIG_$(SPL_)SYS_THUMB_BUILD), \
654 $(if $(CONFIG_HAS_THUMB2),, \
655 -I$(srctree)/arch/$(ARCH)/thumb1/include),) \
656 -I$(srctree)/arch/$(ARCH)/include \
657 -include $(srctree)/include/linux/kconfig.h
659 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
660 CHECKFLAGS += $(NOSTDINC_FLAGS)
663 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
665 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
667 #########################################################################
668 # U-Boot objects....order is important (i.e. start must be first)
670 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
673 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
674 libs-$(CONFIG_OF_EMBED) += dts/
679 libs-y += drivers/dma/
680 libs-y += drivers/gpio/
681 libs-y += drivers/i2c/
682 libs-y += drivers/mtd/
683 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
684 libs-y += drivers/mtd/onenand/
685 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
686 libs-y += drivers/mtd/spi/
687 libs-y += drivers/net/
688 libs-y += drivers/net/phy/
689 libs-y += drivers/pci/
690 libs-y += drivers/power/ \
691 drivers/power/domain/ \
692 drivers/power/fuel_gauge/ \
694 drivers/power/pmic/ \
695 drivers/power/battery/ \
696 drivers/power/regulator/
697 libs-y += drivers/spi/
698 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
699 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
700 libs-$(CONFIG_SYS_FSL_MMDC) += drivers/ddr/fsl/
701 libs-$(CONFIG_ALTERA_SDRAM) += drivers/ddr/altera/
702 libs-y += drivers/serial/
703 libs-y += drivers/usb/dwc3/
704 libs-y += drivers/usb/common/
705 libs-y += drivers/usb/emul/
706 libs-y += drivers/usb/eth/
707 libs-y += drivers/usb/gadget/
708 libs-y += drivers/usb/gadget/udc/
709 libs-y += drivers/usb/host/
710 libs-y += drivers/usb/musb/
711 libs-y += drivers/usb/musb-new/
712 libs-y += drivers/usb/phy/
713 libs-y += drivers/usb/ulpi/
717 libs-$(CONFIG_API) += api/
718 libs-$(CONFIG_HAS_POST) += post/
721 libs-$(CONFIG_UT_ENV) += test/env/
722 libs-$(CONFIG_UT_OVERLAY) += test/overlay/
724 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
726 libs-y := $(sort $(libs-y))
728 u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
730 u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
732 libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
734 u-boot-init := $(head-y)
735 u-boot-main := $(libs-y)
739 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
740 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
742 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
744 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
746 ifdef CONFIG_CC_COVERAGE
747 KBUILD_CFLAGS += --coverage
748 PLATFORM_LIBGCC += -lgcov
752 export PLATFORM_LIBGCC
754 # Special flags for CPP when processing the linker script.
755 # Pass the version down so we can handle backwards compatibility
758 -include $(srctree)/include/u-boot/u-boot.lds.h \
760 $(shell $(LD) --version | \
761 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
763 #########################################################################
764 #########################################################################
766 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
768 @actual=`wc -c $@ | awk '{print $$1}'`; \
769 limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
770 if test $$actual -gt $$limit; then \
771 echo "$@ exceeds file size limit:" >&2 ; \
772 echo " limit: $$limit bytes" >&2 ; \
773 echo " actual: $$actual bytes" >&2 ; \
774 echo " excess: $$((actual - limit)) bytes" >&2; \
781 # Statically apply RELA-style relocations (currently arm64 only)
782 # This is useful for arm64 where static relocation needs to be performed on
783 # the raw binary, but certain simulators only accept an ELF file (but don't
784 # do the relocation).
785 ifneq ($(CONFIG_STATIC_RELA),)
786 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
788 start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
789 end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
790 tools/relocate-rela $(2) $(3) $$start $$end
795 # Always append ALL so that arch config.mk's can add custom ones
796 ALL-y += u-boot.srec u-boot.bin u-boot.sym System.map binary_size_check
798 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
799 ifeq ($(CONFIG_SPL_FSL_PBL),y)
800 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
802 ifneq ($(CONFIG_SECURE_BOOT), y)
803 # For Secure Boot The Image needs to be signed and Header must also
804 # be included. So The image has to be built explicitly
805 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
808 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
809 ifeq ($(CONFIG_MX6)$(CONFIG_SECURE_BOOT), yy)
810 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img
812 ifeq ($(CONFIG_MX7)$(CONFIG_SECURE_BOOT), yy)
813 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img
815 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
818 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
819 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb
820 ifeq ($(CONFIG_SPL_FRAMEWORK),y)
821 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
823 ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
824 ifneq ($(CONFIG_SPL_TARGET),)
825 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
827 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
828 ALL-$(CONFIG_EFI_APP) += u-boot-app.efi
829 ALL-$(CONFIG_EFI_STUB) += u-boot-payload.efi
831 ifneq ($(BUILD_ROM)$(CONFIG_BUILD_ROM),)
832 ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
835 # Build a combined spl + u-boot image for sunxi
836 ifeq ($(CONFIG_ARCH_SUNXI)$(CONFIG_SPL),yy)
837 ALL-y += u-boot-sunxi-with-spl.bin
840 # enable combined SPL/u-boot/dtb rules for tegra
841 ifeq ($(CONFIG_TEGRA)$(CONFIG_SPL),yy)
842 ALL-y += u-boot-tegra.bin u-boot-nodtb-tegra.bin
843 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb-tegra.bin
846 # Add optional build target if defined in board/cpu/soc headers
847 ifneq ($(CONFIG_BUILD_TARGET),)
848 ALL-y += $(CONFIG_BUILD_TARGET:"%"=%)
851 ifneq ($(CONFIG_SYS_INIT_SP_BSS_OFFSET),)
852 ALL-y += init_sp_bss_offset_check
855 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
857 # Avoid 'Not enough room for program headers' error on binutils 2.28 onwards.
858 LDFLAGS_u-boot += $(call ld-option, --no-dynamic-linker)
860 ifeq ($(CONFIG_ARC)$(CONFIG_NIOS2)$(CONFIG_X86)$(CONFIG_XTENSA),)
861 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
864 # Normally we fill empty space with 0xff
865 quiet_cmd_objcopy = OBJCOPY $@
866 cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \
867 $(OBJCOPYFLAGS_$(@F)) $< $@
869 # Provide a version which does not do this, for use by EFI
870 quiet_cmd_zobjcopy = OBJCOPY $@
871 cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
873 quiet_cmd_efipayload = OBJCOPY $@
874 cmd_efipayload = $(OBJCOPY) -I binary -O $(EFIPAYLOAD_BFDTARGET) -B $(EFIPAYLOAD_BFDARCH) $< $@
876 MKIMAGEOUTPUT ?= /dev/null
878 quiet_cmd_mkimage = MKIMAGE $@
879 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
880 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
882 quiet_cmd_mkfitimage = MKIMAGE $@
883 cmd_mkfitimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -f $(U_BOOT_ITS) -E $@ \
884 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
886 quiet_cmd_cat = CAT $@
887 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
889 append = cat $(filter-out $< $(PHONY), $^) >> $@
891 quiet_cmd_pad_cat = CAT $@
892 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
896 quiet_cmd_cfgcheck = CFGCHK $2
897 cmd_cfgcheck = $(srctree)/scripts/check-config.sh $2 \
898 $(srctree)/scripts/config_whitelist.txt $(srctree)
901 ifeq ($(CONFIG_DM_I2C_COMPAT)$(CONFIG_SANDBOX),y)
902 @echo "===================== WARNING ======================"
903 @echo "This board uses CONFIG_DM_I2C_COMPAT. Please remove"
904 @echo "(possibly in a subsequent patch in your series)"
905 @echo "before sending patches to the mailing list."
906 @echo "===================================================="
908 @# Check that this build does not use CONFIG options that we do not
909 @# know about unless they are in Kconfig. All the existing CONFIG
910 @# options are whitelisted, so new ones should not be added.
911 $(call cmd,cfgcheck,u-boot.cfg)
917 $(Q)$(MAKE) $(build)=dts dtbs
919 quiet_cmd_copy = COPY $@
922 ifeq ($(CONFIG_MULTI_DTB_FIT),y)
924 fit-dtb.blob: dts/dt.dtb FORCE
925 $(call if_changed,mkimage)
927 MKIMAGEFLAGS_fit-dtb.blob = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
929 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) -d /dev/null
931 u-boot-fit-dtb.bin: u-boot-nodtb.bin fit-dtb.blob
932 $(call if_changed,cat)
934 u-boot.bin: u-boot-fit-dtb.bin FORCE
935 $(call if_changed,copy)
936 else ifeq ($(CONFIG_OF_SEPARATE),y)
937 u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE
938 $(call if_changed,cat)
940 u-boot.bin: u-boot-dtb.bin FORCE
941 $(call if_changed,copy)
943 u-boot.bin: u-boot-nodtb.bin FORCE
944 $(call if_changed,copy)
948 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
951 $(Q)$(MAKE) $(build)=arch/arm/cpu/armv7/vf610 $@
953 quiet_cmd_copy = COPY $@
956 u-boot.dtb: dts/dt.dtb
959 OBJCOPYFLAGS_u-boot.hex := -O ihex
961 OBJCOPYFLAGS_u-boot.srec := -O srec
963 u-boot.hex u-boot.srec: u-boot FORCE
964 $(call if_changed,objcopy)
966 OBJCOPYFLAGS_u-boot-elf.srec := $(OBJCOPYFLAGS_u-boot.srec)
968 u-boot-elf.srec: u-boot.elf FORCE
969 $(call if_changed,objcopy)
971 OBJCOPYFLAGS_u-boot-spl.srec = $(OBJCOPYFLAGS_u-boot.srec)
973 spl/u-boot-spl.srec: spl/u-boot-spl FORCE
974 $(call if_changed,objcopy)
976 OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \
977 $(if $(CONFIG_X86_16BIT_INIT),-R .start16 -R .resetvec)
979 binary_size_check: u-boot-nodtb.bin FORCE
980 @file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \
981 map_size=$(shell cat u-boot.map | \
982 awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
985 if [ "" != "$$map_size" ]; then \
986 if test $$map_size -ne $$file_size; then \
987 echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
988 echo " but u-boot-nodtb.bin shows $$file_size" >&2 ; \
993 ifneq ($(CONFIG_SYS_INIT_SP_BSS_OFFSET),)
994 ifneq ($(CONFIG_SYS_MALLOC_F_LEN),)
995 subtract_sys_malloc_f_len = space=$$(($${space} - $(CONFIG_SYS_MALLOC_F_LEN)))
997 subtract_sys_malloc_f_len = true
999 # The 1/4 margin below is somewhat arbitrary. The likely initial SP usage is
1000 # so low that the DTB could probably use 90%+ of the available space, for
1001 # current values of CONFIG_SYS_INIT_SP_BSS_OFFSET at least. However, let's be
1002 # safe for now and tweak this later if space becomes tight.
1003 # A rejected alternative would be to check that some absolute minimum stack
1004 # space was available. However, since CONFIG_SYS_INIT_SP_BSS_OFFSET is
1005 # deliberately build-specific, to take account of build-to-build stack usage
1006 # differences due to different feature sets, there is no common absolute value
1008 init_sp_bss_offset_check: u-boot.dtb FORCE
1009 @dtb_size=$(shell wc -c u-boot.dtb | awk '{print $$1}') ; \
1010 space=$(CONFIG_SYS_INIT_SP_BSS_OFFSET) ; \
1011 $(subtract_sys_malloc_f_len) ; \
1012 quarter_space=$$(($${space} / 4)) ; \
1013 if [ $${dtb_size} -gt $${quarter_space} ]; then \
1014 echo "u-boot.dtb is larger than 1 quarter of " >&2 ; \
1015 echo "(CONFIG_SYS_INIT_SP_BSS_OFFSET - CONFIG_SYS_MALLOC_F_LEN)" >&2 ; \
1020 u-boot-nodtb.bin: u-boot FORCE
1021 $(call if_changed,objcopy)
1022 $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
1027 $(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS)
1031 # ---------------------------------------------------------------------------
1032 quiet_cmd_binman = BINMAN $@
1033 cmd_binman = $(srctree)/tools/binman/binman -d u-boot.dtb -O . \
1034 -I . -I $(srctree)/board/$(BOARDDIR) $<
1036 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
1038 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
1040 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
1041 $(call if_changed,objcopy)
1044 # U-Boot entry point, needed for booting of full-blown U-Boot
1045 # from the SPL U-Boot version.
1047 ifndef CONFIG_SYS_UBOOT_START
1048 CONFIG_SYS_UBOOT_START := 0
1051 # Create a file containing the configuration options the image was built with
1052 quiet_cmd_cpp_cfg = CFG $@
1053 cmd_cpp_cfg = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
1054 -DDO_DEPS_ONLY -D__ASSEMBLY__ -x assembler-with-cpp -P -dM -E -o $@ $<
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 # TODO: Do not use *.cfgtmp
1613 clean: $(clean-dirs)
1616 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1617 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1618 -o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
1619 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1620 -o -name '*.symtypes' -o -name 'modules.order' \
1621 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1622 -o -name 'dsdt.aml' -o -name 'dsdt.asl.tmp' -o -name 'dsdt.c' \
1623 -o -name '*.gcno' \) -type f -print | xargs rm -f
1625 # mrproper - Delete all generated files, including .config
1627 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1628 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1629 mrproper-dirs := $(addprefix _mrproper_,scripts)
1631 PHONY += $(mrproper-dirs) mrproper archmrproper
1633 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1635 mrproper: clean $(mrproper-dirs)
1638 @rm -f arch/*/include/asm/arch
1645 @find $(srctree) $(RCS_FIND_IGNORE) \
1646 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1647 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1648 -o -name '.*.rej' -o -name '*%' -o -name 'core' \
1649 -o -name '*.pyc' \) \
1650 -type f -print | xargs rm -f
1654 F=`basename $(srctree)` ; cd .. ; \
1655 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1658 @echo 'Cleaning targets:'
1659 @echo ' clean - Remove most generated files but keep the config'
1660 @echo ' mrproper - Remove all generated files + config + various backup files'
1661 @echo ' distclean - mrproper + remove editor backup and patch files'
1663 @echo 'Configuration targets:'
1664 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1666 @echo 'Other generic targets:'
1667 @echo ' all - Build all necessary images depending on configuration'
1668 @echo ' tests - Build U-Boot for sandbox and run tests'
1669 @echo '* u-boot - Build the bare u-boot'
1670 @echo ' dir/ - Build all files in dir and below'
1671 @echo ' dir/file.[oisS] - Build specified target only'
1672 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1673 @echo ' (requires a recent binutils and recent build (System.map))'
1674 @echo ' tags/ctags - Generate ctags file for editors'
1675 @echo ' etags - Generate etags file for editors'
1676 @echo ' cscope - Generate cscope index'
1677 @echo ' ubootrelease - Output the release version string (use with make -s)'
1678 @echo ' ubootversion - Output the version stored in Makefile (use with make -s)'
1679 @echo " cfg - Don't build, just create the .cfg files"
1680 @echo " envtools - Build only the target-side environment tools"
1682 @echo 'Static analysers'
1683 @echo ' checkstack - Generate a list of stack hogs'
1684 @echo ' coccicheck - Execute static code analysis with Coccinelle'
1686 @echo 'Documentation targets:'
1687 @$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
1689 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1690 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1691 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1692 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1693 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1694 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1695 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1696 @echo ' 1: warnings which may be relevant and do not occur too often'
1697 @echo ' 2: warnings which occur quite often but may still be relevant'
1698 @echo ' 3: more obscure warnings, can most likely be ignored'
1699 @echo ' Multiple levels can be combined with W=12 or W=123'
1701 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1702 @echo 'For further info see the ./README file'
1707 # Documentation targets
1708 # ---------------------------------------------------------------------------
1709 %docs: scripts_basic FORCE
1710 $(Q)$(MAKE) $(build)=scripts build_docproc
1711 $(Q)$(MAKE) $(build)=doc/DocBook $@
1713 endif #ifeq ($(config-targets),1)
1714 endif #ifeq ($(mixed-targets),1)
1716 PHONY += checkstack ubootrelease ubootversion
1719 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1720 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1723 @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1726 @echo $(UBOOTVERSION)
1729 # ---------------------------------------------------------------------------
1730 # Single targets are compatible with:
1731 # - build with mixed source and output
1732 # - build with separate output dir 'make O=...'
1733 # - external modules
1735 # target-dir => where to store outputfile
1736 # build-dir => directory in kernel source tree to use
1738 ifeq ($(KBUILD_EXTMOD),)
1739 build-dir = $(patsubst %/,%,$(dir $@))
1740 target-dir = $(dir $@)
1742 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1743 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1744 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1747 %.s: %.c prepare scripts FORCE
1748 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1749 %.i: %.c prepare scripts FORCE
1750 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1751 %.o: %.c prepare scripts FORCE
1752 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1753 %.lst: %.c prepare scripts FORCE
1754 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1755 %.s: %.S prepare scripts FORCE
1756 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1757 %.o: %.S prepare scripts FORCE
1758 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1759 %.symtypes: %.c prepare scripts FORCE
1760 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1763 /: prepare scripts FORCE
1765 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1766 $(build)=$(build-dir)
1767 %/: prepare scripts FORCE
1769 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1770 $(build)=$(build-dir)
1771 %.ko: prepare scripts FORCE
1773 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1774 $(build)=$(build-dir) $(@:.ko=.o)
1775 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1777 # Consistency checks
1778 # ---------------------------------------------------------------------------
1783 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
1785 # FIXME Should go into a make.lib or something
1786 # ===========================================================================
1788 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1789 cmd_rmdirs = rm -rf $(rm-dirs)
1791 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1792 cmd_rmfiles = rm -f $(rm-files)
1794 # read all saved command lines
1796 targets := $(wildcard $(sort $(targets)))
1797 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1799 ifneq ($(cmd_files),)
1800 $(cmd_files): ; # Do not try to update included dependency files
1801 include $(cmd_files)
1804 endif # skip-makefile
1809 # Declare the contents of the .PHONY variable as phony. We keep that
1810 # information in a variable so we can use it in if_changed and friends.