1 # SPDX-License-Identifier: GPL-2.0+
10 # To see a list of typical targets execute "make help"
11 # More info can be located in ./README
12 # Comments in this file are targeted only to the developer, do not
13 # expect to learn how to build the kernel reading this file.
15 # o Do not use make's built-in rules and variables
16 # (this increases performance and avoids hard-to-debug behaviour);
17 # o Look for make include files relative to root of kernel src
18 MAKEFLAGS += -rR --include-dir=$(CURDIR)
20 # Avoid funny character set dependencies
24 export LC_COLLATE LC_NUMERIC
26 # Avoid interference with shell env settings
29 # We are using a recursive build, so we need to do a little thinking
30 # to get the ordering right.
32 # Most importantly: sub-Makefiles should only ever modify files in
33 # their own directory. If in some directory we have a dependency on
34 # a file in another dir (which doesn't happen often, but it's often
35 # unavoidable when linking the built-in.o targets which finally
36 # turn into vmlinux), we will call a sub make in that other dir, and
37 # after that we are sure that everything which is in that other dir
40 # The only cases where we need to modify files which have global
41 # effects are thus separated out and done before the recursive
42 # descending is started. They are now explicitly listed as the
46 # ---------------------------------------------------------------------------
48 # Normally, we echo the whole command before executing it. By making
49 # that echo $($(quiet)$(cmd)), we now have the possibility to set
50 # $(quiet) to choose other forms of output instead, e.g.
52 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
53 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
55 # If $(quiet) is empty, the whole command will be printed.
56 # If it is set to "quiet_", only the short version will be printed.
57 # If it is set to "silent_", nothing will be printed at all, since
58 # the variable $(silent_cmd_cc_o_c) doesn't exist.
60 # A simple variant is to prefix commands with $(Q) - that's useful
61 # for commands that shall be hidden in non-verbose mode.
65 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
66 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
68 # To put more focus on warnings, be less verbose as default
69 # Use 'make V=1' to see the full commands
71 ifeq ("$(origin V)", "command line")
78 ifeq ($(KBUILD_VERBOSE),1)
86 # If the user is running make -s (silent mode), suppress echoing of
89 ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4
90 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
94 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
99 export quiet Q KBUILD_VERBOSE
101 # kbuild supports saving output files in a separate directory.
102 # To locate output files in a separate directory two syntaxes are supported.
103 # In both cases the working directory must be the root of the kernel src.
105 # Use "make O=dir/to/store/output/files/"
107 # 2) Set KBUILD_OUTPUT
108 # Set the environment variable KBUILD_OUTPUT to point to the directory
109 # where the output files shall be placed.
110 # export KBUILD_OUTPUT=dir/to/store/output/files/
113 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
116 # KBUILD_SRC is set on invocation of make in OBJ directory
117 # KBUILD_SRC is not intended to be used by the regular user (for now)
118 ifeq ($(KBUILD_SRC),)
120 # OK, Make called in directory where kernel src resides
121 # Do we want to locate output files in a separate directory?
122 ifeq ("$(origin O)", "command line")
123 KBUILD_OUTPUT := $(O)
126 # That's our default target when none is given on the command line
130 # Cancel implicit rules on top Makefile
131 $(CURDIR)/Makefile Makefile: ;
133 ifneq ($(KBUILD_OUTPUT),)
134 # Invoke a second make in the output directory, passing relevant variables
135 # check that the output directory actually exists
136 saved-output := $(KBUILD_OUTPUT)
137 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
139 $(if $(KBUILD_OUTPUT),, \
140 $(error failed to create output directory "$(saved-output)"))
142 PHONY += $(MAKECMDGOALS) sub-make
144 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
148 $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
149 -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS))
151 # Leave processing to above invocation of make
153 endif # ifneq ($(KBUILD_OUTPUT),)
154 endif # ifeq ($(KBUILD_SRC),)
156 # We process the rest of the Makefile if this is the final invocation of make
157 ifeq ($(skip-makefile),)
159 # Do not print "Entering directory ...",
160 # but we want to display it when entering to the output directory
161 # so that IDEs/editors are able to understand relative filenames.
162 MAKEFLAGS += --no-print-directory
164 # Call a source code checker (by default, "sparse") as part of the
167 # Use 'make C=1' to enable checking of only re-compiled files.
168 # Use 'make C=2' to enable checking of *all* source files, regardless
169 # of whether they are re-compiled or not.
171 # See the file "doc/sparse.txt" for more details, including
172 # where to get the "sparse" utility.
174 ifeq ("$(origin C)", "command line")
175 KBUILD_CHECKSRC = $(C)
177 ifndef KBUILD_CHECKSRC
181 # Use make M=dir to specify directory of external module to build
182 # Old syntax make ... SUBDIRS=$PWD is still supported
183 # Setting the environment variable KBUILD_EXTMOD take precedence
185 KBUILD_EXTMOD ?= $(SUBDIRS)
188 ifeq ("$(origin M)", "command line")
189 KBUILD_EXTMOD := $(M)
192 # If building an external module we do not care about the all: rule
193 # but instead _all depend on modules
195 ifeq ($(KBUILD_EXTMOD),)
201 ifeq ($(KBUILD_SRC),)
202 # building in the source tree
205 ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
206 # building in a subdirectory of the source tree
209 srctree := $(KBUILD_SRC)
216 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
218 export srctree objtree VPATH
220 # Make sure CDPATH settings don't interfere
223 #########################################################################
225 HOSTARCH := $(shell uname -m | \
227 -e s/sun4u/sparc64/ \
230 -e s/ppc64/powerpc/ \
232 -e s/macppc/powerpc/\
235 HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
236 sed -e 's/\(cygwin\).*/cygwin/')
238 export HOSTARCH HOSTOS
240 #########################################################################
242 # set default to nothing for native builds
243 ifeq ($(HOSTARCH),$(ARCH))
247 KCONFIG_CONFIG ?= .config
248 export KCONFIG_CONFIG
250 # SHELL used by kbuild
251 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
252 else if [ -x /bin/bash ]; then echo /bin/bash; \
253 else echo sh; fi ; fi)
257 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \
258 $(if $(CONFIG_TOOLS_DEBUG),-g)
261 # With the move to GCC 6, we have implicitly upgraded our language
262 # standard to GNU11 (see https://gcc.gnu.org/gcc-5/porting_to.html).
263 # Some Linux distributions (including RHEL7, SLES13, Debian 8) still
264 # have older compilers as their default, so we make it explicit for
265 # these that our host tools are GNU11 (i.e. C11 w/ GNU extensions).
266 CSTD_FLAG := -std=gnu11
267 ifeq ($(HOSTOS),linux)
268 HOSTCFLAGS += $(CSTD_FLAG)
271 ifeq ($(HOSTOS),cygwin)
275 # Mac OS X / Darwin's C preprocessor is Apple specific. It
276 # generates numerous errors and warnings. We want to bypass it
277 # and use GNU C's cpp. To do this we pass the -traditional-cpp
278 # option to the compiler. Note that the -traditional-cpp flag
279 # DOES NOT have the same semantics as GNU C's flag, all it does
280 # is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
282 # Apple's linker is similar, thanks to the new 2 stage linking
283 # multiple symbol definitions are treated as errors, hence the
284 # -multiply_defined suppress option to turn off this error.
286 ifeq ($(HOSTOS),darwin)
287 # get major and minor product version (e.g. '10' and '6' for Snow Leopard)
288 DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.')
289 DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.')
291 os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
292 $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
294 os_x_after = $(shell if [ $(DARWIN_MAJOR_VERSION) -ge $(1) -a \
295 $(DARWIN_MINOR_VERSION) -ge $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
297 # Snow Leopards build environment has no longer restrictions as described above
298 HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc")
299 HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp")
300 HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
302 # since Lion (10.7) ASLR is on by default, but we use linker generated lists
303 # in some host tools which is a problem then ... so disable ASLR for these
305 HOSTLDFLAGS += $(call os_x_before, 10, 7, "", "-Xlinker -no_pie")
307 # macOS Mojave (10.14.X)
308 # Undefined symbols for architecture x86_64: "_PyArg_ParseTuple"
309 HOSTLDFLAGS += $(call os_x_after, 10, 14, "-lpython -dynamclib", "")
312 # Decide whether to build built-in, modular, or both.
313 # Normally, just do built-in.
318 # If we have only "make modules", don't compile built-in objects.
319 # When we're building modules with modversions, we need to consider
320 # the built-in objects during the descend as well, in order to
321 # make sure the checksums are up to date before we record them.
323 ifeq ($(MAKECMDGOALS),modules)
324 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
327 # If we have "make <whatever> modules", compile modules
328 # in addition to whatever we do anyway.
329 # Just "make" or "make all" shall build modules as well
331 # U-Boot does not need modules
332 #ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
333 # KBUILD_MODULES := 1
336 #ifeq ($(MAKECMDGOALS),)
337 # KBUILD_MODULES := 1
340 # Check ths size of a binary:
343 # #2: Size limit in bytes (decimal or 0xhex)
345 actual=$$( wc -c $1 | awk '{print $$1}'); \
346 limit=$$( printf "%d" $2 ); \
347 if test $$actual -gt $$limit; then \
348 echo "$1 exceeds file size limit:" >&2; \
349 echo " limit: $$(printf %#x $$limit) bytes" >&2; \
350 echo " actual: $$(printf %#x $$actual) bytes" >&2; \
351 echo " excess: $$(printf %#x $$((actual - limit))) bytes" >&2;\
357 export KBUILD_MODULES KBUILD_BUILTIN
358 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
360 # We need some generic definitions (do not try to remake the file).
361 scripts/Kbuild.include: ;
362 include scripts/Kbuild.include
364 # Make variables (CC, etc...)
366 AS = $(CROSS_COMPILE)as
368 ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
369 LD = $(CROSS_COMPILE)ld.bfd
371 LD = $(CROSS_COMPILE)ld
373 CC = $(CROSS_COMPILE)gcc
375 AR = $(CROSS_COMPILE)ar
376 NM = $(CROSS_COMPILE)nm
377 LDR = $(CROSS_COMPILE)ldr
378 STRIP = $(CROSS_COMPILE)strip
379 OBJCOPY = $(CROSS_COMPILE)objcopy
380 OBJDUMP = $(CROSS_COMPILE)objdump
388 DTC ?= $(objtree)/scripts/dtc/dtc
391 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
392 -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
394 KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__
396 KBUILD_CFLAGS := -Wall -Wstrict-prototypes \
397 -Wno-format-security \
398 -fno-builtin -ffreestanding $(CSTD_FLAG)
399 KBUILD_CFLAGS += -fshort-wchar -fno-strict-aliasing
400 KBUILD_AFLAGS := -D__ASSEMBLY__
402 # Don't generate position independent code
403 KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
404 KBUILD_AFLAGS += $(call cc-option,-fno-PIE)
406 # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
407 UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
408 UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
410 export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
411 export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
412 export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
413 export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
414 export MAKE LEX YACC AWK PERL PYTHON PYTHON2 PYTHON3
415 export HOSTCXX HOSTCXXFLAGS CHECK CHECKFLAGS DTC DTC_FLAGS
417 export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
418 export KBUILD_CFLAGS KBUILD_AFLAGS
420 # When compiling out-of-tree modules, put MODVERDIR in the module
421 # tree rather than in the kernel tree. The kernel tree might
423 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
425 # Files to ignore in find ... statements
427 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
428 -name CVS -o -name .pc -o -name .hg -o -name .git \) \
430 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
431 --exclude CVS --exclude .pc --exclude .hg --exclude .git
433 # ===========================================================================
434 # Rules shared between *config targets and build targets
436 # Basic helpers built in scripts/
437 PHONY += scripts_basic
439 $(Q)$(MAKE) $(build)=scripts/basic
440 $(Q)rm -f .tmp_quiet_recordmcount
442 # To avoid any implicit rule to kick in, define an empty command.
443 scripts/basic/%: scripts_basic ;
445 PHONY += outputmakefile
446 # outputmakefile generates a Makefile in the output directory, if using a
447 # separate output directory. This allows convenient use of make in the
450 ifneq ($(KBUILD_SRC),)
451 $(Q)ln -fsn $(srctree) source
452 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
453 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
456 # To make sure we do not include .config for any of the *config targets
457 # catch them early, and hand them over to scripts/kconfig/Makefile
458 # It is allowed to specify more targets when calling make, including
459 # mixing *config targets and build targets.
460 # For example 'make oldconfig all'.
461 # Detect when mixed targets is specified, and make a second invocation
462 # of make so .config is not included in this case either (for *config).
464 version_h := include/generated/version_autogenerated.h
465 timestamp_h := include/generated/timestamp_autogenerated.h
466 defaultenv_h := include/generated/defaultenv_autogenerated.h
468 no-dot-config-targets := clean clobber mrproper distclean \
469 help %docs check% coccicheck \
470 ubootversion backup tests check qcheck
476 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
477 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
482 ifeq ($(KBUILD_EXTMOD),)
483 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
485 ifneq ($(words $(MAKECMDGOALS)),1)
491 ifeq ($(mixed-targets),1)
492 # ===========================================================================
493 # We're called with mixed targets (*config and build targets).
494 # Handle them one by one.
496 PHONY += $(MAKECMDGOALS) __build_one_by_one
498 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
503 for i in $(MAKECMDGOALS); do \
504 $(MAKE) -f $(srctree)/Makefile $$i; \
508 ifeq ($(config-targets),1)
509 # ===========================================================================
510 # *config targets only - make sure prerequisites are updated, and descend
511 # in scripts/kconfig to make the *config target
513 KBUILD_DEFCONFIG := sandbox_defconfig
514 export KBUILD_DEFCONFIG KBUILD_KCONFIG
516 config: scripts_basic outputmakefile FORCE
517 $(Q)$(MAKE) $(build)=scripts/kconfig $@
519 %config: scripts_basic outputmakefile FORCE
520 $(Q)$(MAKE) $(build)=scripts/kconfig $@
523 # ===========================================================================
524 # Build targets only - this includes vmlinux, arch specific targets, clean
525 # targets and others. In general all targets except *config targets.
527 # Additional helpers built in scripts/
528 # Carefully list dependencies so we do not try to build scripts twice
531 scripts: scripts_basic include/config/auto.conf
532 $(Q)$(MAKE) $(build)=$(@)
534 ifeq ($(dot-config),1)
536 -include include/config/auto.conf
538 # Read in dependencies to all Kconfig* files, make sure to run
539 # oldconfig if changes are detected.
540 -include include/config/auto.conf.cmd
542 # To avoid any implicit rule to kick in, define an empty command
543 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
545 # If .config is newer than include/config/auto.conf, someone tinkered
546 # with it and forgot to run make oldconfig.
547 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
548 # we execute the config step to be sure to catch updated Kconfig files
549 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
550 $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig
551 @# If the following part fails, include/config/auto.conf should be
552 @# deleted so "make silentoldconfig" will be re-run on the next build.
553 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf || \
554 { rm -f include/config/auto.conf; false; }
555 @# include/config.h has been updated after "make silentoldconfig".
556 @# We need to touch include/config/auto.conf so it gets newer
557 @# than include/config.h.
558 @# Otherwise, 'make silentoldconfig' would be invoked twice.
559 $(Q)touch include/config/auto.conf
561 u-boot.cfg spl/u-boot.cfg tpl/u-boot.cfg:
562 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf $(@)
564 -include include/autoconf.mk
565 -include include/autoconf.mk.dep
567 # We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf
568 # is up-to-date. When we switch to a different board configuration, old CONFIG
569 # macros are still remaining in include/config/auto.conf. Without the following
570 # gimmick, wrong config.mk would be included leading nasty warnings/errors.
571 ifneq ($(wildcard $(KCONFIG_CONFIG)),)
572 ifneq ($(wildcard include/config/auto.conf),)
573 autoconf_is_old := $(shell find . -path ./$(KCONFIG_CONFIG) -newer \
574 include/config/auto.conf)
575 ifeq ($(autoconf_is_old),)
577 include arch/$(ARCH)/Makefile
582 # These are set by the arch-specific config.mk. Make sure they are exported
583 # so they can be used when building an EFI application.
584 export EFI_LDS # Filename of EFI link script in arch/$(ARCH)/lib
585 export EFI_CRT0 # Filename of EFI CRT0 in arch/$(ARCH)/lib
586 export EFI_RELOC # Filename of EFU relocation code in arch/$(ARCH)/lib
587 export CFLAGS_EFI # Compiler flags to add when building EFI app
588 export CFLAGS_NON_EFI # Compiler flags to remove when building EFI app
589 export EFI_TARGET # binutils target if EFI is natively supported
591 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
592 # that (or fail if absent). Otherwise, search for a linker script in a
596 #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
597 ifdef CONFIG_SYS_LDSCRIPT
598 # need to strip off double quotes
599 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
603 # If there is no specified link script, we look in a number of places for it
605 ifeq ($(wildcard $(LDSCRIPT)),)
606 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
608 ifeq ($(wildcard $(LDSCRIPT)),)
609 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
611 ifeq ($(wildcard $(LDSCRIPT)),)
612 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
617 # Dummy target needed, because used as prerequisite
618 include/config/auto.conf: ;
619 endif # $(dot-config)
622 # Xtensa linker script cannot be preprocessed with -ansi because of
623 # preprocessor operations on strings that don't make C identifiers.
625 ifeq ($(CONFIG_XTENSA),)
629 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
635 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
636 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks)
638 # change __FILE__ to the relative path from the srctree
639 KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
642 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
643 # option to the assembler.
646 # Report stack usage if supported
647 # ARC tools based on GCC 7.1 has an issue with stack usage
648 # with naked functions, see commit message for more details
650 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
651 KBUILD_CFLAGS += -fstack-usage
655 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
656 ifeq ($(cc-name),clang)
657 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
658 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
659 KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
660 KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
661 KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
664 # turn jbsr into jsr for m68k
666 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
667 KBUILD_AFLAGS += -Wa,-gstabs,-S
671 # Prohibit date/time macros, which would make the build non-deterministic
672 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
674 include scripts/Makefile.extrawarn
676 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
677 KBUILD_CPPFLAGS += $(KCPPFLAGS)
678 KBUILD_AFLAGS += $(KAFLAGS)
679 KBUILD_CFLAGS += $(KCFLAGS)
681 # Use UBOOTINCLUDE when you must reference the include/ directory.
682 # Needed to be compatible with the O= option
685 $(if $(KBUILD_SRC), -I$(srctree)/include) \
686 $(if $(CONFIG_$(SPL_)SYS_THUMB_BUILD), \
687 $(if $(CONFIG_HAS_THUMB2),, \
688 -I$(srctree)/arch/$(ARCH)/thumb1/include),) \
689 -I$(srctree)/arch/$(ARCH)/include \
690 -include $(srctree)/include/linux/kconfig.h
692 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
693 CHECKFLAGS += $(NOSTDINC_FLAGS)
696 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
698 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
700 #########################################################################
701 # U-Boot objects....order is important (i.e. start must be first)
703 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
706 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
707 libs-$(CONFIG_OF_EMBED) += dts/
712 libs-y += drivers/dma/
713 libs-y += drivers/gpio/
714 libs-y += drivers/i2c/
715 libs-y += drivers/mtd/
716 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/raw/
717 libs-y += drivers/mtd/onenand/
718 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
719 libs-y += drivers/mtd/spi/
720 libs-y += drivers/net/
721 libs-y += drivers/net/phy/
722 libs-y += drivers/power/ \
723 drivers/power/domain/ \
724 drivers/power/fuel_gauge/ \
726 drivers/power/pmic/ \
727 drivers/power/battery/ \
728 drivers/power/regulator/
729 libs-y += drivers/spi/
730 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
731 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
732 libs-$(CONFIG_SYS_FSL_MMDC) += drivers/ddr/fsl/
733 libs-$(CONFIG_$(SPL_)ALTERA_SDRAM) += drivers/ddr/altera/
734 libs-y += drivers/serial/
735 libs-y += drivers/usb/cdns3/
736 libs-y += drivers/usb/dwc3/
737 libs-y += drivers/usb/common/
738 libs-y += drivers/usb/emul/
739 libs-y += drivers/usb/eth/
740 libs-$(CONFIG_USB_GADGET) += drivers/usb/gadget/
741 libs-$(CONFIG_USB_GADGET) += drivers/usb/gadget/udc/
742 libs-y += drivers/usb/host/
743 libs-y += drivers/usb/musb/
744 libs-y += drivers/usb/musb-new/
745 libs-y += drivers/usb/phy/
746 libs-y += drivers/usb/ulpi/
750 libs-$(CONFIG_API) += api/
751 libs-$(CONFIG_HAS_POST) += post/
752 libs-$(CONFIG_UNIT_TEST) += test/ test/dm/
753 libs-$(CONFIG_UT_ENV) += test/env/
754 libs-$(CONFIG_UT_OVERLAY) += test/overlay/
756 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
758 libs-y := $(sort $(libs-y))
760 u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
762 u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
764 libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
766 u-boot-init := $(head-y)
767 u-boot-main := $(libs-y)
771 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
772 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
774 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
776 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
778 ifdef CONFIG_CC_COVERAGE
779 KBUILD_CFLAGS += --coverage
780 PLATFORM_LIBGCC += -lgcov
784 export PLATFORM_LIBGCC
786 # Special flags for CPP when processing the linker script.
787 # Pass the version down so we can handle backwards compatibility
790 -include $(srctree)/include/u-boot/u-boot.lds.h \
792 $(shell $(LD) --version | \
793 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
795 #########################################################################
796 #########################################################################
798 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
799 BOARD_SIZE_CHECK= @ $(call size_check,$@,$(CONFIG_BOARD_SIZE_LIMIT))
804 ifneq ($(CONFIG_SPL_SIZE_LIMIT),0)
805 SPL_SIZE_CHECK = @$(call size_check,$@,$$(tools/spl_size_limit))
810 ifneq ($(CONFIG_TPL_SIZE_LIMIT),0)
811 TPL_SIZE_CHECK = @$(call size_check,$@,$(CONFIG_TPL_SIZE_LIMIT))
816 # Statically apply RELA-style relocations (currently arm64 only)
817 # This is useful for arm64 where static relocation needs to be performed on
818 # the raw binary, but certain simulators only accept an ELF file (but don't
819 # do the relocation).
820 ifneq ($(CONFIG_STATIC_RELA),)
821 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
823 start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
824 end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
825 tools/relocate-rela $(2) $(3) $$start $$end
830 # Always append ALL so that arch config.mk's can add custom ones
831 ALL-y += u-boot.srec u-boot.bin u-boot.sym System.map binary_size_check
833 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
834 ifeq ($(CONFIG_SPL_FSL_PBL),y)
835 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
837 ifneq ($(CONFIG_SECURE_BOOT), y)
838 # For Secure Boot The Image needs to be signed and Header must also
839 # be included. So The image has to be built explicitly
840 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
843 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
844 ifeq ($(CONFIG_MX6)$(CONFIG_IMX_HAB), yy)
845 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img
847 ifeq ($(CONFIG_MX7)$(CONFIG_IMX_HAB), yy)
848 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img
850 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
853 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
854 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb
855 ifeq ($(CONFIG_SPL_FRAMEWORK),y)
856 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
858 ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
859 ifneq ($(CONFIG_SPL_TARGET),)
860 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
862 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
863 ALL-$(CONFIG_EFI_APP) += u-boot-app.efi
864 ALL-$(CONFIG_EFI_STUB) += u-boot-payload.efi
866 ifneq ($(BUILD_ROM)$(CONFIG_BUILD_ROM),)
867 ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
870 # Build a combined spl + u-boot image for sunxi
871 ifeq ($(CONFIG_ARCH_SUNXI)$(CONFIG_SPL),yy)
872 ALL-y += u-boot-sunxi-with-spl.bin
875 # enable combined SPL/u-boot/dtb rules for tegra
876 ifeq ($(CONFIG_TEGRA)$(CONFIG_SPL),yy)
877 ALL-y += u-boot-tegra.bin u-boot-nodtb-tegra.bin
878 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb-tegra.bin
881 ALL-$(CONFIG_ARCH_MEDIATEK) += u-boot-mtk.bin
883 # Add optional build target if defined in board/cpu/soc headers
884 ifneq ($(CONFIG_BUILD_TARGET),)
885 ALL-y += $(CONFIG_BUILD_TARGET:"%"=%)
888 ifdef CONFIG_INIT_SP_RELATIVE
889 ALL-y += init_sp_bss_offset_check
892 ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
893 ALL-y += u-boot-with-dtb.bin
896 ifeq ($(CONFIG_ARCH_ROCKCHIP)$(CONFIG_SPL)$(CONFIG_TPL),yyy)
897 ALL-y += idbloader.img
900 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
902 # Avoid 'Not enough room for program headers' error on binutils 2.28 onwards.
903 LDFLAGS_u-boot += $(call ld-option, --no-dynamic-linker)
905 ifeq ($(CONFIG_ARC)$(CONFIG_NIOS2)$(CONFIG_X86)$(CONFIG_XTENSA),)
906 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
909 # Normally we fill empty space with 0xff
910 quiet_cmd_objcopy = OBJCOPY $@
911 cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \
912 $(OBJCOPYFLAGS_$(@F)) $< $@
914 # Provide a version which does not do this, for use by EFI
915 quiet_cmd_zobjcopy = OBJCOPY $@
916 cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
918 quiet_cmd_efipayload = OBJCOPY $@
919 cmd_efipayload = $(OBJCOPY) -I binary -O $(EFIPAYLOAD_BFDTARGET) -B $(EFIPAYLOAD_BFDARCH) $< $@
921 MKIMAGEOUTPUT ?= /dev/null
923 quiet_cmd_mkimage = MKIMAGE $@
924 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
925 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
927 quiet_cmd_mkfitimage = MKIMAGE $@
928 cmd_mkfitimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -f $(U_BOOT_ITS) -p $(CONFIG_FIT_EXTERNAL_OFFSET) $@\
929 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
931 quiet_cmd_cat = CAT $@
932 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
934 append = cat $(filter-out $< $(PHONY), $^) >> $@
936 quiet_cmd_pad_cat = CAT $@
937 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
941 quiet_cmd_cfgcheck = CFGCHK $2
942 cmd_cfgcheck = $(srctree)/scripts/check-config.sh $2 \
943 $(srctree)/scripts/config_whitelist.txt $(srctree)
946 ifeq ($(CONFIG_DEPRECATED),y)
947 $(warning "You have deprecated configuration options enabled in your .config! Please check your configuration.")
948 ifeq ($(CONFIG_SPI),y)
949 ifneq ($(CONFIG_DM_SPI)$(CONFIG_OF_CONTROL),yy)
950 $(warning "The relevant config item with associated code will remove in v2019.07 release.")
954 ifneq ($(CONFIG_DM),y)
955 @echo >&2 "===================== WARNING ======================"
956 @echo >&2 "This board does not use CONFIG_DM. CONFIG_DM will be"
957 @echo >&2 "compulsory starting with the v2020.01 release."
958 @echo >&2 "Failure to update may result in board removal."
959 @echo >&2 "See doc/driver-model/migration.rst for more info."
960 @echo >&2 "===================================================="
962 ifeq ($(CONFIG_MMC),y)
963 ifneq ($(CONFIG_DM_MMC)$(CONFIG_OF_CONTROL)$(CONFIG_BLK),yyy)
964 @echo >&2 "===================== WARNING ======================"
965 @echo >&2 "This board does not use CONFIG_DM_MMC. Please update"
966 @echo >&2 "the board to use CONFIG_DM_MMC before the v2019.04 release."
967 @echo >&2 "Failure to update by the deadline may result in board removal."
968 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
969 @echo >&2 "===================================================="
972 ifeq ($(CONFIG_USB),y)
973 ifneq ($(CONFIG_DM_USB)$(CONFIG_OF_CONTROL)$(CONFIG_BLK),yyy)
974 @echo >&2 "===================== WARNING ======================"
975 @echo >&2 "This board does not use CONFIG_DM_USB. Please update"
976 @echo >&2 "the board to use CONFIG_DM_USB before the v2019.07 release."
977 @echo >&2 "Failure to update by the deadline may result in board removal."
978 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
979 @echo >&2 "===================================================="
982 ifeq ($(CONFIG_MVSATA_IDE),y)
983 @echo >&2 "===================== WARNING ======================"
984 @echo >&2 "This board does use CONFIG_MVSATA_IDE which is not"
985 @echo >&2 "ported to driver-model (DM) yet. Please update the storage"
986 @echo >&2 "controller driver to use CONFIG_AHCI before the v2019.07"
988 @echo >&2 "Failure to update by the deadline may result in board removal."
989 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
990 @echo >&2 "===================================================="
992 ifeq ($(CONFIG_LIBATA),y)
993 ifneq ($(CONFIG_AHCI),y)
994 @echo >&2 "===================== WARNING ======================"
995 @echo >&2 "This board does use CONFIG_LIBATA but has CONFIG_AHCI not"
996 @echo >&2 "enabled. Please update the storage controller driver to use"
997 @echo >&2 "CONFIG_AHCI before the v2019.07 release."
998 @echo >&2 "Failure to update by the deadline may result in board removal."
999 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
1000 @echo >&2 "===================================================="
1003 ifeq ($(CONFIG_PCI),y)
1004 ifneq ($(CONFIG_DM_PCI),y)
1005 @echo >&2 "===================== WARNING ======================"
1006 @echo >&2 "This board does not use CONFIG_DM_PCI Please update"
1007 @echo >&2 "the board to use CONFIG_DM_PCI before the v2019.07 release."
1008 @echo >&2 "Failure to update by the deadline may result in board removal."
1009 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
1010 @echo >&2 "===================================================="
1013 ifneq ($(CONFIG_LCD)$(CONFIG_VIDEO),)
1014 ifneq ($(CONFIG_DM_VIDEO),y)
1015 @echo >&2 "===================== WARNING ======================"
1016 @echo >&2 "This board does not use CONFIG_DM_VIDEO Please update"
1017 @echo >&2 "the board to use CONFIG_DM_VIDEO before the v2019.07 release."
1018 @echo >&2 "Failure to update by the deadline may result in board removal."
1019 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
1020 @echo >&2 "===================================================="
1023 ifeq ($(CONFIG_OF_EMBED),y)
1024 @echo >&2 "===================== WARNING ======================"
1025 @echo >&2 "CONFIG_OF_EMBED is enabled. This option should only"
1026 @echo >&2 "be used for debugging purposes. Please use"
1027 @echo >&2 "CONFIG_OF_SEPARATE for boards in mainline."
1028 @echo >&2 "See doc/README.fdt-control for more info."
1029 @echo >&2 "===================================================="
1031 ifeq ($(CONFIG_SPI_FLASH),y)
1032 ifneq ($(CONFIG_DM_SPI_FLASH)$(CONFIG_OF_CONTROL),yy)
1033 @echo >&2 "===================== WARNING ======================"
1034 @echo >&2 "This board does not use CONFIG_DM_SPI_FLASH. Please update"
1035 @echo >&2 "the board to use CONFIG_SPI_FLASH before the v2019.07 release."
1036 @echo >&2 "Failure to update by the deadline may result in board removal."
1037 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
1038 @echo >&2 "===================================================="
1041 ifneq ($(CONFIG_WATCHDOG)$(CONFIG_HW_WATCHDOG),)
1042 ifneq ($(CONFIG_WDT),y)
1043 @echo >&2 "===================== WARNING ======================"
1044 @echo >&2 "This board does not use CONFIG_WDT (DM watchdog support)."
1045 @echo >&2 "Please update the board to use CONFIG_WDT before the"
1046 @echo >&2 "v2019.10 release."
1047 @echo >&2 "Failure to update by the deadline may result in board removal."
1048 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
1049 @echo >&2 "===================================================="
1052 ifneq ($(CONFIG_NET),)
1053 ifneq ($(CONFIG_DM_ETH),y)
1054 @echo >&2 "===================== WARNING ======================"
1055 @echo >&2 "This board does not use CONFIG_DM_ETH (Driver Model"
1056 @echo >&2 "for Ethernet drivers). Please update the board to use"
1057 @echo >&2 "CONFIG_DM_ETH before the v2020.07 release. Failure to"
1058 @echo >&2 "update by the deadline may result in board removal."
1059 @echo >&2 "See doc/driver-model/migration.rst for more info."
1060 @echo >&2 "===================================================="
1063 @# Check that this build does not use CONFIG options that we do not
1064 @# know about unless they are in Kconfig. All the existing CONFIG
1065 @# options are whitelisted, so new ones should not be added.
1066 $(call cmd,cfgcheck,u-boot.cfg)
1072 $(Q)$(MAKE) $(build)=dts dtbs
1074 quiet_cmd_copy = COPY $@
1077 ifeq ($(CONFIG_MULTI_DTB_FIT),y)
1079 ifeq ($(CONFIG_MULTI_DTB_FIT_LZO),y)
1080 FINAL_DTB_CONTAINER = fit-dtb.blob.lzo
1081 else ifeq ($(CONFIG_MULTI_DTB_FIT_GZIP),y)
1082 FINAL_DTB_CONTAINER = fit-dtb.blob.gz
1084 FINAL_DTB_CONTAINER = fit-dtb.blob
1087 fit-dtb.blob.gz: fit-dtb.blob
1090 fit-dtb.blob.lzo: fit-dtb.blob
1093 fit-dtb.blob: dts/dt.dtb FORCE
1094 $(call if_changed,mkimage)
1095 ifneq ($(SOURCE_DATE_EPOCH),)
1096 touch -d @$(SOURCE_DATE_EPOCH) fit-dtb.blob
1097 chmod 0600 fit-dtb.blob
1100 MKIMAGEFLAGS_fit-dtb.blob = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
1102 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) -d /dev/null
1105 u-boot-fit-dtb.bin: u-boot-nodtb.bin $(EXT_DTB)
1106 $(call if_changed,cat)
1108 u-boot-fit-dtb.bin: u-boot-nodtb.bin $(FINAL_DTB_CONTAINER)
1109 $(call if_changed,cat)
1112 u-boot.bin: u-boot-fit-dtb.bin FORCE
1113 $(call if_changed,copy)
1115 u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE
1116 $(call if_changed,cat)
1118 else ifeq ($(CONFIG_OF_SEPARATE),y)
1119 u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE
1120 $(call if_changed,cat)
1122 u-boot.bin: u-boot-dtb.bin FORCE
1123 $(call if_changed,copy)
1125 u-boot.bin: u-boot-nodtb.bin FORCE
1126 $(call if_changed,copy)
1129 # we call Makefile in arch/arm/mach-imx which
1130 # has targets which are dependent on targets defined
1131 # here. make could not resolve them and we must ensure
1132 # that they are finished before calling imx targets
1133 ifeq ($(CONFIG_MULTI_DTB_FIT),y)
1134 IMX_DEPS = u-boot-fit-dtb.bin
1137 %.imx: $(IMX_DEPS) %.bin
1138 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1142 $(Q)$(MAKE) $(build)=arch/arm/cpu/armv7/vf610 $@
1144 quiet_cmd_copy = COPY $@
1147 u-boot.dtb: dts/dt.dtb
1150 OBJCOPYFLAGS_u-boot.hex := -O ihex
1152 OBJCOPYFLAGS_u-boot.srec := -O srec
1154 u-boot.hex u-boot.srec: u-boot FORCE
1155 $(call if_changed,objcopy)
1157 OBJCOPYFLAGS_u-boot-elf.srec := $(OBJCOPYFLAGS_u-boot.srec)
1159 u-boot-elf.srec: u-boot.elf FORCE
1160 $(call if_changed,objcopy)
1162 OBJCOPYFLAGS_u-boot-spl.srec = $(OBJCOPYFLAGS_u-boot.srec)
1164 spl/u-boot-spl.srec: spl/u-boot-spl FORCE
1165 $(call if_changed,objcopy)
1168 $(Q)$(MAKE) $(build)=arch/arm/mach-rmobile $@
1170 OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \
1171 $(if $(CONFIG_X86_16BIT_INIT),-R .start16 -R .resetvec) \
1172 $(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR),-R .bootpg -R .resetvec)
1174 OBJCOPYFLAGS_u-boot-spl.hex = $(OBJCOPYFLAGS_u-boot.hex)
1176 spl/u-boot-spl.hex: spl/u-boot-spl FORCE
1177 $(call if_changed,objcopy)
1179 binary_size_check: u-boot-nodtb.bin FORCE
1180 @file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \
1181 map_size=$(shell cat u-boot.map | \
1182 awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
1185 if [ "" != "$$map_size" ]; then \
1186 if test $$map_size -ne $$file_size; then \
1187 echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
1188 echo " but u-boot-nodtb.bin shows $$file_size" >&2 ; \
1193 ifdef CONFIG_INIT_SP_RELATIVE
1194 ifneq ($(CONFIG_SYS_MALLOC_F_LEN),)
1195 subtract_sys_malloc_f_len = space=$$(($${space} - $(CONFIG_SYS_MALLOC_F_LEN)))
1197 subtract_sys_malloc_f_len = true
1199 # The 1/4 margin below is somewhat arbitrary. The likely initial SP usage is
1200 # so low that the DTB could probably use 90%+ of the available space, for
1201 # current values of CONFIG_SYS_INIT_SP_BSS_OFFSET at least. However, let's be
1202 # safe for now and tweak this later if space becomes tight.
1203 # A rejected alternative would be to check that some absolute minimum stack
1204 # space was available. However, since CONFIG_SYS_INIT_SP_BSS_OFFSET is
1205 # deliberately build-specific, to take account of build-to-build stack usage
1206 # differences due to different feature sets, there is no common absolute value
1208 init_sp_bss_offset_check: u-boot.dtb FORCE
1209 @dtb_size=$(shell wc -c u-boot.dtb | awk '{print $$1}') ; \
1210 space=$(CONFIG_SYS_INIT_SP_BSS_OFFSET) ; \
1211 $(subtract_sys_malloc_f_len) ; \
1212 quarter_space=$$(($${space} / 4)) ; \
1213 if [ $${dtb_size} -gt $${quarter_space} ]; then \
1214 echo "u-boot.dtb is larger than 1 quarter of " >&2 ; \
1215 echo "(CONFIG_SYS_INIT_SP_BSS_OFFSET - CONFIG_SYS_MALLOC_F_LEN)" >&2 ; \
1220 u-boot-nodtb.bin: u-boot FORCE
1221 $(call if_changed,objcopy)
1222 $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
1227 $(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS)
1231 # ---------------------------------------------------------------------------
1232 # Use 'make BINMAN_DEBUG=1' to enable debugging
1233 quiet_cmd_binman = BINMAN $@
1234 cmd_binman = $(srctree)/tools/binman/binman $(if $(BINMAN_DEBUG),-D) \
1235 --toolpath $(objtree)/tools \
1236 $(if $(BINMAN_VERBOSE),-v$(BINMAN_VERBOSE)) \
1237 build -u -d u-boot.dtb -O . -m \
1238 -I . -I $(srctree) -I $(srctree)/board/$(BOARDDIR) \
1241 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
1243 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
1245 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
1246 $(call if_changed,objcopy)
1249 # U-Boot entry point, needed for booting of full-blown U-Boot
1250 # from the SPL U-Boot version.
1252 ifndef CONFIG_SYS_UBOOT_START
1253 CONFIG_SYS_UBOOT_START := 0
1256 # Boards with more complex image requirements can provide an .its source file
1257 # or a generator script
1258 ifneq ($(CONFIG_SPL_FIT_SOURCE),"")
1259 U_BOOT_ITS = $(subst ",,$(CONFIG_SPL_FIT_SOURCE))
1261 ifneq ($(CONFIG_SPL_FIT_GENERATOR),"")
1262 U_BOOT_ITS := u-boot.its
1263 ifeq ($(CONFIG_SPL_FIT_GENERATOR),"arch/arm/mach-imx/mkimage_fit_atf.sh")
1264 U_BOOT_ITS_DEPS += u-boot-nodtb.bin
1266 ifeq ($(CONFIG_SPL_FIT_GENERATOR),"arch/arm/mach-rockchip/make_fit_atf.py")
1267 U_BOOT_ITS_DEPS += u-boot
1269 $(U_BOOT_ITS): $(U_BOOT_ITS_DEPS) FORCE
1270 $(srctree)/$(CONFIG_SPL_FIT_GENERATOR) \
1271 $(patsubst %,arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) > $@
1275 ifdef CONFIG_SPL_LOAD_FIT
1276 MKIMAGEFLAGS_u-boot.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
1277 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1278 -p $(CONFIG_FIT_EXTERNAL_OFFSET) \
1279 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \
1280 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST)))
1282 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
1283 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1284 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
1285 MKIMAGEFLAGS_u-boot-ivt.img = -A $(ARCH) -T firmware_ivt -C none -O u-boot \
1286 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1287 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
1288 u-boot-ivt.img: MKIMAGEOUTPUT = u-boot-ivt.img.log
1289 CLEAN_FILES += u-boot-ivt.img.log u-boot-dtb.imx.log SPL.log u-boot.imx.log
1292 MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
1294 # Some boards have the kwbimage.cfg file written in advance, while some
1295 # other boards generate it on the fly during the build in the build tree.
1296 # Let's check if the file exists in the build tree first, otherwise we
1297 # fall back to use the one in the source tree.
1298 KWD_CONFIG_FILE = $(shell \
1299 if [ -f $(objtree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) ]; then \
1300 echo -n $(objtree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%); \
1302 echo -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%); \
1305 MKIMAGEFLAGS_u-boot.kwb = -n $(KWD_CONFIG_FILE) \
1306 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
1308 MKIMAGEFLAGS_u-boot-spl.kwb = -n $(KWD_CONFIG_FILE) \
1309 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \
1310 $(if $(KEYDIR),-k $(KEYDIR))
1312 MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1313 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
1315 ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
1316 UBOOT_BIN := u-boot-with-dtb.bin
1318 UBOOT_BIN := u-boot.bin
1321 u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl u-boot-ivt.img: \
1322 $(if $(CONFIG_SPL_LOAD_FIT),u-boot-nodtb.bin \
1323 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_OF_HOSTFILE),dts/dt.dtb) \
1324 ,$(UBOOT_BIN)) FORCE
1325 $(call if_changed,mkimage)
1328 ifeq ($(CONFIG_SPL_LOAD_FIT_FULL),y)
1329 MKIMAGEFLAGS_u-boot.itb =
1331 MKIMAGEFLAGS_u-boot.itb = -E
1334 u-boot.itb: u-boot-nodtb.bin \
1335 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_OF_HOSTFILE),dts/dt.dtb) \
1337 $(call if_changed,mkfitimage)
1340 u-boot-spl.kwb: u-boot.img spl/u-boot-spl.bin FORCE
1341 $(call if_changed,mkimage)
1343 u-boot.sha1: u-boot.bin
1344 tools/ubsha1 u-boot.bin
1347 $(OBJDUMP) -d $< > $@
1349 ifneq ($(CONFIG_SPL_PAYLOAD),)
1350 SPL_PAYLOAD := $(CONFIG_SPL_PAYLOAD:"%"=%)
1352 SPL_PAYLOAD := u-boot.bin
1355 SPL_IMAGE := $(CONFIG_SPL_IMAGE:"%"=%)
1357 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
1358 --pad-to=$(CONFIG_SPL_PAD_TO)
1359 u-boot-with-spl.bin: $(SPL_IMAGE) $(SPL_PAYLOAD) FORCE
1360 $(call if_changed,pad_cat)
1362 ifeq ($(CONFIG_ARCH_ROCKCHIP),y)
1363 MKIMAGEFLAGS_u-boot-tpl.img = -n $(CONFIG_SYS_SOC) -T rksd
1364 tpl/u-boot-tpl.img: tpl/u-boot-tpl.bin FORCE
1365 $(call if_changed,mkimage)
1366 idbloader.img: tpl/u-boot-tpl.img spl/u-boot-spl.bin FORCE
1367 $(call if_changed,cat)
1370 ifeq ($(CONFIG_ARCH_LPC32XX)$(CONFIG_SPL),yy)
1371 MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE)
1373 lpc32xx-spl.img: spl/u-boot-spl.bin FORCE
1374 $(call if_changed,mkimage)
1376 OBJCOPYFLAGS_lpc32xx-boot-0.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1378 lpc32xx-boot-0.bin: lpc32xx-spl.img FORCE
1379 $(call if_changed,objcopy)
1381 OBJCOPYFLAGS_lpc32xx-boot-1.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1383 lpc32xx-boot-1.bin: lpc32xx-spl.img FORCE
1384 $(call if_changed,objcopy)
1386 lpc32xx-full.bin: lpc32xx-boot-0.bin lpc32xx-boot-1.bin u-boot.img FORCE
1387 $(call if_changed,cat)
1389 CLEAN_FILES += lpc32xx-*
1392 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
1393 --pad-to=$(CONFIG_TPL_PAD_TO)
1394 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
1395 $(call if_changed,pad_cat)
1397 SPL: spl/u-boot-spl.bin FORCE
1398 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1400 ifeq ($(CONFIG_ARCH_IMX8M)$(CONFIG_ARCH_IMX8), y)
1401 ifeq ($(CONFIG_SPL_LOAD_IMX_CONTAINER), y)
1402 u-boot.cnt: u-boot.bin FORCE
1403 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1405 flash.bin: spl/u-boot-spl.bin u-boot.cnt FORCE
1406 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1408 flash.bin: spl/u-boot-spl.bin u-boot.itb FORCE
1409 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1413 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
1414 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1416 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
1418 u-boot.ubl: u-boot-with-spl.bin FORCE
1419 $(call if_changed,mkimage)
1421 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
1422 $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
1423 -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
1424 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
1425 $(call if_changed,mkimage)
1427 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1428 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
1429 $(call if_changed,pad_cat)
1431 u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
1432 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
1433 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
1434 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
1436 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
1437 # Both images are created using mkimage (crc etc), so that the ROM
1438 # bootloader can check its integrity. Padding needs to be done to the
1439 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
1440 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
1441 # The resulting image containing both U-Boot images is called u-boot.spr
1442 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
1443 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
1444 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
1445 $(call if_changed,mkimage)
1447 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1449 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
1450 $(call if_changed,pad_cat)
1452 ifneq ($(CONFIG_ARCH_SOCFPGA),)
1453 quiet_cmd_socboot = SOCBOOT $@
1454 cmd_socboot = cat spl/u-boot-spl.sfp spl/u-boot-spl.sfp \
1455 spl/u-boot-spl.sfp spl/u-boot-spl.sfp \
1456 u-boot.img > $@ || rm -f $@
1457 u-boot-with-spl.sfp: spl/u-boot-spl.sfp u-boot.img FORCE
1458 $(call if_changed,socboot)
1461 ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
1462 u-boot-with-dtb.bin: u-boot.bin u-boot.dtb \
1463 $(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR), u-boot-br.bin) FORCE
1464 $(call if_changed,binman)
1466 ifeq ($(CONFIG_MPC85XX_HAVE_RESET_VECTOR),y)
1467 OBJCOPYFLAGS_u-boot-br.bin := -O binary -j .bootpg -j .resetvec
1468 u-boot-br.bin: u-boot FORCE
1469 $(call if_changed,objcopy)
1473 # x86 uses a large ROM. We fill it with 0xff, put the 16-bit stuff (including
1474 # reset vector) at the top, Intel ME descriptor at the bottom, and U-Boot in
1475 # the middle. This is handled by binman based on an image description in the
1476 # board's device tree.
1477 ifneq ($(CONFIG_X86_RESET_VECTOR),)
1478 rom: u-boot.rom FORCE
1480 refcode.bin: $(srctree)/board/$(BOARDDIR)/refcode.bin FORCE
1481 $(call if_changed,copy)
1483 quiet_cmd_ldr = LD $@
1484 cmd_ldr = $(LD) $(LDFLAGS_$(@F)) \
1485 $(filter-out FORCE,$^) -o $@
1487 u-boot.rom: u-boot-x86-start16.bin u-boot-x86-reset16.bin u-boot.bin \
1488 $(if $(CONFIG_SPL_X86_16BIT_INIT),spl/u-boot-spl.bin) \
1489 $(if $(CONFIG_TPL_X86_16BIT_INIT),tpl/u-boot-tpl.bin) \
1490 $(if $(CONFIG_HAVE_REFCODE),refcode.bin) FORCE
1491 $(call if_changed,binman)
1493 OBJCOPYFLAGS_u-boot-x86-start16.bin := -O binary -j .start16
1494 u-boot-x86-start16.bin: u-boot FORCE
1495 $(call if_changed,objcopy)
1497 OBJCOPYFLAGS_u-boot-x86-reset16.bin := -O binary -j .resetvec
1498 u-boot-x86-reset16.bin: u-boot FORCE
1499 $(call if_changed,objcopy)
1502 ifneq ($(CONFIG_ARCH_SUNXI),)
1503 ifeq ($(CONFIG_ARM64),)
1504 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img u-boot.dtb FORCE
1505 $(call if_changed,binman)
1507 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.itb FORCE
1508 $(call if_changed,cat)
1512 ifneq ($(CONFIG_TEGRA),)
1513 ifneq ($(CONFIG_BINMAN),)
1514 # Makes u-boot-dtb-tegra.bin u-boot-tegra.bin u-boot-nodtb-tegra.bin
1515 %-dtb-tegra.bin %-tegra.bin %-nodtb-tegra.bin: \
1516 spl/%-spl %.bin FORCE
1517 $(call if_changed,binman)
1519 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1520 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot-nodtb.bin FORCE
1521 $(call if_changed,pad_cat)
1523 OBJCOPYFLAGS_u-boot-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1524 u-boot-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
1525 $(call if_changed,pad_cat)
1527 u-boot-dtb-tegra.bin: u-boot-tegra.bin FORCE
1528 $(call if_changed,copy)
1532 OBJCOPYFLAGS_u-boot-app.efi := $(OBJCOPYFLAGS_EFI)
1533 u-boot-app.efi: u-boot FORCE
1534 $(call if_changed,zobjcopy)
1536 u-boot.bin.o: u-boot.bin FORCE
1537 $(call if_changed,efipayload)
1539 u-boot-payload.lds: $(LDSCRIPT_EFI) FORCE
1540 $(call if_changed_dep,cpp_lds)
1542 # Rule to link the EFI payload which contains a stub and a U-Boot binary
1543 quiet_cmd_u-boot_payload ?= LD $@
1544 cmd_u-boot_payload ?= $(LD) $(LDFLAGS_EFI_PAYLOAD) -o $@ \
1545 -T u-boot-payload.lds arch/x86/cpu/call32.o \
1546 lib/efi/efi.o lib/efi/efi_stub.o u-boot.bin.o \
1547 $(addprefix arch/$(ARCH)/lib/,$(EFISTUB))
1549 u-boot-payload: u-boot.bin.o u-boot-payload.lds FORCE
1550 $(call if_changed,u-boot_payload)
1552 OBJCOPYFLAGS_u-boot-payload.efi := $(OBJCOPYFLAGS_EFI)
1553 u-boot-payload.efi: u-boot-payload FORCE
1554 $(call if_changed,zobjcopy)
1556 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
1557 $(call if_changed,cat)
1559 #Add a target to create boot binary having SPL binary in PBI format
1560 #concatenated with u-boot binary. It is need by PowerPC SoC having
1561 #internal SRAM <= 512KB.
1562 MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1563 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \
1564 -A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE)
1566 spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
1567 $(call if_changed,mkimage)
1570 UBOOT_BINLOAD := u-boot.img
1572 ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
1573 UBOOT_BINLOAD := u-boot-with-dtb.bin
1575 UBOOT_BINLOAD := u-boot.bin
1579 OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1582 u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE
1583 $(call if_changed,pad_cat)
1585 # PPC4xx needs the SPL at the end of the image, since the reset vector
1586 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
1587 # and need to introduce a new build target with the full blown U-Boot
1588 # at the start padded up to the start of the SPL image. And then concat
1589 # the SPL image to the end.
1591 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
1592 --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
1593 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
1594 $(call if_changed,pad_cat)
1596 # Create a new ELF from a raw binary file.
1597 ifndef PLATFORM_ELFENTRY
1598 PLATFORM_ELFENTRY = "_start"
1600 quiet_cmd_u-boot-elf ?= LD $@
1601 cmd_u-boot-elf ?= $(LD) u-boot-elf.o -o $@ \
1602 --defsym=$(PLATFORM_ELFENTRY)=$(CONFIG_SYS_TEXT_BASE) \
1603 -Ttext=$(CONFIG_SYS_TEXT_BASE)
1604 u-boot.elf: u-boot.bin
1605 $(Q)$(OBJCOPY) -I binary $(PLATFORM_ELFFLAGS) $< u-boot-elf.o
1606 $(call if_changed,u-boot-elf)
1608 # MediaTek's ARM-based u-boot needs a header to contains its load address
1609 # which is parsed by the BootROM.
1610 # If the SPL build is enabled, the header will be added to the spl binary,
1611 # and the spl binary and the u-boot.img will be combined into one file.
1612 # Otherwise the header will be added to the u-boot.bin directly.
1614 ifeq ($(CONFIG_SPL),y)
1615 spl/u-boot-spl-mtk.bin: spl/u-boot-spl
1617 u-boot-mtk.bin: u-boot.dtb u-boot.img spl/u-boot-spl-mtk.bin FORCE
1618 $(call if_changed,binman)
1620 MKIMAGEFLAGS_u-boot-mtk.bin = -T mtk_image \
1621 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \
1622 -n "$(patsubst "%",%,$(CONFIG_MTK_BROM_HEADER_INFO))"
1624 u-boot-mtk.bin: u-boot.bin FORCE
1625 $(call if_changed,mkimage)
1628 ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(ARCH)/Makefile.postlink)
1630 # Rule to link u-boot
1631 # May be overridden by arch/$(ARCH)/config.mk
1632 quiet_cmd_u-boot__ ?= LD $@
1633 cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
1634 -T u-boot.lds $(u-boot-init) \
1635 --start-group $(u-boot-main) --end-group \
1636 $(PLATFORM_LIBS) -Map u-boot.map; \
1637 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
1639 quiet_cmd_smap = GEN common/system_map.o
1641 smap=`$(call SYSTEM_MAP,u-boot) | \
1642 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
1643 $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
1644 -c $(srctree)/common/system_map.c -o common/system_map.o
1646 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds FORCE
1647 +$(call if_changed,u-boot__)
1648 ifeq ($(CONFIG_KALLSYMS),y)
1650 $(call cmd,u-boot__) common/system_map.o
1653 ifeq ($(CONFIG_RISCV),y)
1654 @tools/prelink-riscv $@ 0
1657 quiet_cmd_sym ?= SYM $@
1658 cmd_sym ?= $(OBJDUMP) -t $< > $@
1659 u-boot.sym: u-boot FORCE
1660 $(call if_changed,sym)
1662 # The actual objects are generated when descending,
1663 # make sure no implicit rule kicks in
1664 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
1666 # Handle descending into subdirectories listed in $(vmlinux-dirs)
1667 # Preset locale variables to speed up the build process. Limit locale
1668 # tweaks to this spot to avoid wrong language settings when running
1669 # make menuconfig etc.
1670 # Error messages still appears in the original language
1672 PHONY += $(u-boot-dirs)
1673 $(u-boot-dirs): prepare scripts
1674 $(Q)$(MAKE) $(build)=$@
1677 # The "tools" are needed early
1678 $(filter-out tools, $(u-boot-dirs)): tools
1679 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
1680 # is "yes"), so compile examples after U-Boot is compiled.
1681 examples: $(filter-out examples, $(u-boot-dirs))
1683 define filechk_uboot.release
1684 echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1687 # Store (new) UBOOTRELEASE string in include/config/uboot.release
1688 include/config/uboot.release: include/config/auto.conf FORCE
1689 $(call filechk,uboot.release)
1692 # Things we need to do before we recursively start building the kernel
1693 # or the modules are listed in "prepare".
1694 # A multi level approach is used. prepareN is processed before prepareN-1.
1695 # archprepare is used in arch Makefiles and when processed asm symlink,
1696 # version.h and scripts_basic is processed / created.
1698 # Listed in dependency order
1699 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1701 # prepare3 is used to check if we are building in a separate output directory,
1703 # 1) Check that make has not been executed in the kernel src $(srctree)
1704 prepare3: include/config/uboot.release
1705 ifneq ($(KBUILD_SRC),)
1706 @$(kecho) ' Using $(srctree) as source for U-Boot'
1707 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
1708 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
1709 echo >&2 " in the '$(srctree)' directory.";\
1714 # prepare2 creates a makefile if using a separate output directory
1715 prepare2: prepare3 outputmakefile cfg
1717 prepare1: prepare2 $(version_h) $(timestamp_h) \
1718 include/config/auto.conf
1719 ifeq ($(wildcard $(LDSCRIPT)),)
1720 @echo >&2 " Could not find linker script."
1724 ifeq ($(CONFIG_USE_DEFAULT_ENV_FILE),y)
1725 prepare1: $(defaultenv_h)
1728 archprepare: prepare1 scripts_basic
1730 prepare0: archprepare FORCE
1731 $(Q)$(MAKE) $(build)=.
1733 # All the preparing..
1736 # Generate some files
1737 # ---------------------------------------------------------------------------
1739 define filechk_version.h
1740 (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1741 echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1742 echo \#define CC_VERSION_STRING \"$$(LC_ALL=C $(CC) --version | head -n 1)\"; \
1743 echo \#define LD_VERSION_STRING \"$$(LC_ALL=C $(LD) --version | head -n 1)\"; )
1746 # The SOURCE_DATE_EPOCH mechanism requires a date that behaves like GNU date.
1747 # The BSD date on the other hand behaves different and would produce errors
1748 # with the misused '-d' switch. Respect that and search a working date with
1749 # well known pre- and suffixes for the GNU variant of date.
1750 define filechk_timestamp.h
1751 (if test -n "$${SOURCE_DATE_EPOCH}"; then \
1752 SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \
1754 for date in gdate date.gnu date; do \
1755 $${date} -u -d "$${SOURCE_DATE}" >/dev/null 2>&1 && DATE="$${date}"; \
1757 if test -n "$${DATE}"; then \
1758 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DATE "%b %d %C%y"'; \
1759 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TIME "%T"'; \
1760 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TZ "%z"'; \
1761 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1762 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \
1767 LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1768 LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \
1769 LC_ALL=C date +'#define U_BOOT_TZ "%z"'; \
1770 LC_ALL=C date +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1771 LC_ALL=C date +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \
1775 define filechk_defaultenv.h
1779 sed -e 's/\\\x0/\n/g' | \
1780 xxd -i ; echo ", 0x00" ; )
1783 $(version_h): include/config/uboot.release FORCE
1784 $(call filechk,version.h)
1786 $(timestamp_h): $(srctree)/Makefile FORCE
1787 $(call filechk,timestamp.h)
1789 $(defaultenv_h): $(CONFIG_DEFAULT_ENV_FILE:"%"=%) FORCE
1790 $(call filechk,defaultenv.h)
1792 # ---------------------------------------------------------------------------
1793 quiet_cmd_cpp_lds = LDS $@
1794 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) \
1795 -D__ASSEMBLY__ -x assembler-with-cpp -std=c99 -P -o $@ $<
1797 u-boot.lds: $(LDSCRIPT) prepare FORCE
1798 $(call if_changed_dep,cpp_lds)
1800 spl/u-boot-spl.bin: spl/u-boot-spl
1804 spl/u-boot-spl: tools prepare \
1805 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb) \
1806 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_TPL_OF_PLATDATA),dts/dt.dtb)
1807 $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all
1809 spl/sunxi-spl.bin: spl/u-boot-spl
1812 spl/sunxi-spl-with-ecc.bin: spl/sunxi-spl.bin
1815 spl/u-boot-spl.sfp: spl/u-boot-spl
1818 spl/boot.bin: spl/u-boot-spl
1821 tpl/u-boot-tpl.bin: tools prepare \
1822 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb)
1823 $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
1826 TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
1832 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1833 -name '*.[chS]' -print`
1837 etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1838 -name '*.[chS]' -print`
1840 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1842 @find $(TAG_SUBDIRS) -name '*.[chS]' -type l -print | \
1843 grep -xvf - cscope.files > cscope.files.no-symlinks; \
1844 mv cscope.files.no-symlinks cscope.files
1849 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1852 @$(call SYSTEM_MAP,$<) > $@
1854 #########################################################################
1856 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1857 # R_AARCH64_RELATIVE (64-bit).
1858 checkarmreloc: u-boot
1859 @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1860 grep R_A | sort -u`"; \
1861 if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1862 "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1863 echo "$< contains unexpected relocations: $$RELOC"; \
1867 tools/version.h: include/version.h
1868 $(call if_changed,copy)
1870 envtools: scripts_basic $(version_h) $(timestamp_h) tools/version.h
1871 $(Q)$(MAKE) $(build)=tools/env
1873 tools-only: export TOOLS_ONLY=y
1874 tools-only: scripts_basic $(version_h) $(timestamp_h) tools/version.h
1875 $(Q)$(MAKE) $(build)=tools
1877 tools-all: export HOST_TOOLS_ALL=y
1878 tools-all: envtools tools ;
1880 cross_tools: export CROSS_BUILD_TOOLS=y
1881 cross_tools: tools ;
1885 git log --no-merges U-Boot-1_1_5.. | \
1886 unexpand -a | sed -e 's/\s\s*$$//' > $@
1888 #########################################################################
1891 # Cleaning is done on three levels.
1892 # make clean Delete most generated files
1893 # Leave enough to build external modules
1894 # make mrproper Delete the current configuration, and all generated files
1895 # make distclean Remove editor backup files, patch leftover files and the like
1897 # Directories & files removed with 'make clean'
1898 CLEAN_DIRS += $(MODVERDIR) \
1899 $(foreach d, spl tpl, $(patsubst %,$d/%, \
1900 $(filter-out include, $(shell ls -1 $d 2>/dev/null))))
1902 CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h tools/version.h \
1903 boot* u-boot* MLO* SPL System.map fit-dtb.blob*
1905 # Directories & files removed with 'make mrproper'
1906 MRPROPER_DIRS += include/config include/generated spl tpl \
1908 MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \
1909 ctags etags tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1910 drivers/video/fonts/*.S
1912 # clean - Delete most, but leave enough to build external modules
1914 clean: rm-dirs := $(CLEAN_DIRS)
1915 clean: rm-files := $(CLEAN_FILES)
1917 clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
1919 clean-dirs := $(addprefix _clean_, $(clean-dirs))
1921 PHONY += $(clean-dirs) clean archclean
1923 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1925 clean: $(clean-dirs)
1928 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1929 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1930 -o -name '*.ko.*' -o -name '*.su' -o -name '*.pyc' \
1931 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1932 -o -name '*.lex.c' -o -name '*.tab.[ch]' \
1933 -o -name '*.symtypes' -o -name 'modules.order' \
1934 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1935 -o -name 'dsdt.aml' -o -name 'dsdt.asl.tmp' -o -name 'dsdt.c' \
1936 -o -name '*.efi' -o -name '*.gcno' -o -name '*.so' \) \
1937 -type f -print | xargs rm -f \
1938 bl31.c bl31.elf bl31_*.bin image.map tispl.bin*
1940 # mrproper - Delete all generated files, including .config
1942 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1943 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1944 mrproper-dirs := $(addprefix _mrproper_,scripts)
1946 PHONY += $(mrproper-dirs) mrproper archmrproper
1948 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1950 mrproper: clean $(mrproper-dirs)
1953 @rm -f arch/*/include/asm/arch
1960 @find $(srctree) $(RCS_FIND_IGNORE) \
1961 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1962 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1963 -o -name '.*.rej' -o -name '*%' -o -name 'core' \
1964 -o -name '*.pyc' \) \
1965 -type f -print | xargs rm -f
1966 @rm -f boards.cfg CHANGELOG
1969 F=`basename $(srctree)` ; cd .. ; \
1970 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1973 @echo 'Cleaning targets:'
1974 @echo ' clean - Remove most generated files but keep the config'
1975 @echo ' mrproper - Remove all generated files + config + various backup files'
1976 @echo ' distclean - mrproper + remove editor backup and patch files'
1978 @echo 'Configuration targets:'
1979 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1981 @echo 'Test targets:'
1983 @echo ' check - Run all automated tests that use sandbox'
1984 @echo ' qcheck - Run quick automated tests that use sandbox'
1986 @echo 'Other generic targets:'
1987 @echo ' all - Build all necessary images depending on configuration'
1988 @echo ' tests - Build U-Boot for sandbox and run tests'
1989 @echo '* u-boot - Build the bare u-boot'
1990 @echo ' dir/ - Build all files in dir and below'
1991 @echo ' dir/file.[oisS] - Build specified target only'
1992 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1993 @echo ' (requires a recent binutils and recent build (System.map))'
1994 @echo ' tags/ctags - Generate ctags file for editors'
1995 @echo ' etags - Generate etags file for editors'
1996 @echo ' cscope - Generate cscope index'
1997 @echo ' ubootrelease - Output the release version string (use with make -s)'
1998 @echo ' ubootversion - Output the version stored in Makefile (use with make -s)'
1999 @echo " cfg - Don't build, just create the .cfg files"
2000 @echo " envtools - Build only the target-side environment tools"
2002 @echo 'Static analysers'
2003 @echo ' checkstack - Generate a list of stack hogs'
2004 @echo ' coccicheck - Execute static code analysis with Coccinelle'
2006 @echo 'Documentation targets:'
2007 @$(MAKE) -f $(srctree)/doc/Makefile dochelp
2009 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
2010 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
2011 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
2012 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
2013 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
2014 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
2015 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
2016 @echo ' 1: warnings which may be relevant and do not occur too often'
2017 @echo ' 2: warnings which occur quite often but may still be relevant'
2018 @echo ' 3: more obscure warnings, can most likely be ignored'
2019 @echo ' Multiple levels can be combined with W=12 or W=123'
2021 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
2022 @echo 'For further info see the ./README file'
2028 $(srctree)/test/run quick
2030 # Documentation targets
2031 # ---------------------------------------------------------------------------
2032 DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \
2033 linkcheckdocs dochelp refcheckdocs
2034 PHONY += $(DOC_TARGETS)
2035 $(DOC_TARGETS): scripts_basic FORCE
2036 $(Q)$(MAKE) $(build)=doc $@
2038 endif #ifeq ($(config-targets),1)
2039 endif #ifeq ($(mixed-targets),1)
2041 PHONY += checkstack ubootrelease ubootversion
2044 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
2045 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
2048 @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
2051 @echo $(UBOOTVERSION)
2054 # ---------------------------------------------------------------------------
2055 # Single targets are compatible with:
2056 # - build with mixed source and output
2057 # - build with separate output dir 'make O=...'
2058 # - external modules
2060 # target-dir => where to store outputfile
2061 # build-dir => directory in kernel source tree to use
2063 ifeq ($(KBUILD_EXTMOD),)
2064 build-dir = $(patsubst %/,%,$(dir $@))
2065 target-dir = $(dir $@)
2067 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
2068 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
2069 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
2072 %.s: %.c prepare scripts FORCE
2073 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2074 %.i: %.c prepare scripts FORCE
2075 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2076 %.o: %.c prepare scripts FORCE
2077 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2078 %.lst: %.c prepare scripts FORCE
2079 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2080 %.s: %.S prepare scripts FORCE
2081 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2082 %.o: %.S prepare scripts FORCE
2083 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2084 %.symtypes: %.c prepare scripts FORCE
2085 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2088 /: prepare scripts FORCE
2090 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
2091 $(build)=$(build-dir)
2092 %/: prepare scripts FORCE
2094 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
2095 $(build)=$(build-dir)
2096 %.ko: prepare scripts FORCE
2098 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
2099 $(build)=$(build-dir) $(@:.ko=.o)
2100 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
2102 quiet_cmd_genenv = GENENV $@
2103 cmd_genenv = $(OBJCOPY) --dump-section .rodata.default_environment=$@ env/common.o; \
2104 sed --in-place -e 's/\x00/\x0A/g' $@
2106 u-boot-initial-env: u-boot.bin
2107 $(call if_changed,genenv)
2109 # Consistency checks
2110 # ---------------------------------------------------------------------------
2115 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
2117 # FIXME Should go into a make.lib or something
2118 # ===========================================================================
2120 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
2121 cmd_rmdirs = rm -rf $(rm-dirs)
2123 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
2124 cmd_rmfiles = rm -f $(rm-files)
2126 # read all saved command lines
2128 targets := $(wildcard $(sort $(targets)))
2129 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
2131 ifneq ($(cmd_files),)
2132 $(cmd_files): ; # Do not try to update included dependency files
2133 include $(cmd_files)
2136 endif # skip-makefile
2141 # Declare the contents of the .PHONY variable as phony. We keep that
2142 # information in a variable so we can use it in if_changed and friends.