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-$(CONFIG_UT_OPTEE) += test/optee/
755 libs-$(CONFIG_UT_OVERLAY) += test/overlay/
757 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
759 libs-y := $(sort $(libs-y))
761 u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
763 u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
765 libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
767 u-boot-init := $(head-y)
768 u-boot-main := $(libs-y)
772 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
773 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
775 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
777 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
779 ifdef CONFIG_CC_COVERAGE
780 KBUILD_CFLAGS += --coverage
781 PLATFORM_LIBGCC += -lgcov
785 export PLATFORM_LIBGCC
787 # Special flags for CPP when processing the linker script.
788 # Pass the version down so we can handle backwards compatibility
791 -include $(srctree)/include/u-boot/u-boot.lds.h \
793 $(shell $(LD) --version | \
794 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
796 #########################################################################
797 #########################################################################
799 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
800 BOARD_SIZE_CHECK= @ $(call size_check,$@,$(CONFIG_BOARD_SIZE_LIMIT))
805 ifneq ($(CONFIG_SPL_SIZE_LIMIT),0)
806 SPL_SIZE_CHECK = @$(call size_check,$@,$$(tools/spl_size_limit))
811 ifneq ($(CONFIG_TPL_SIZE_LIMIT),0)
812 TPL_SIZE_CHECK = @$(call size_check,$@,$(CONFIG_TPL_SIZE_LIMIT))
817 # Statically apply RELA-style relocations (currently arm64 only)
818 # This is useful for arm64 where static relocation needs to be performed on
819 # the raw binary, but certain simulators only accept an ELF file (but don't
820 # do the relocation).
821 ifneq ($(CONFIG_STATIC_RELA),)
822 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
824 start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
825 end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
826 tools/relocate-rela $(2) $(3) $$start $$end
831 # Always append ALL so that arch config.mk's can add custom ones
832 ALL-y += u-boot.srec u-boot.bin u-boot.sym System.map binary_size_check
834 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
835 ifeq ($(CONFIG_SPL_FSL_PBL),y)
836 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
838 ifneq ($(CONFIG_SECURE_BOOT), y)
839 # For Secure Boot The Image needs to be signed and Header must also
840 # be included. So The image has to be built explicitly
841 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
844 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
845 ifeq ($(CONFIG_MX6)$(CONFIG_IMX_HAB), yy)
846 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img
848 ifeq ($(CONFIG_MX7)$(CONFIG_IMX_HAB), yy)
849 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img
851 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
854 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
855 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb
856 ifeq ($(CONFIG_SPL_FRAMEWORK),y)
857 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
859 ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
860 ifneq ($(CONFIG_SPL_TARGET),)
861 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
863 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
864 ALL-$(CONFIG_EFI_APP) += u-boot-app.efi
865 ALL-$(CONFIG_EFI_STUB) += u-boot-payload.efi
867 ifneq ($(BUILD_ROM)$(CONFIG_BUILD_ROM),)
868 ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
871 # Build a combined spl + u-boot image for sunxi
872 ifeq ($(CONFIG_ARCH_SUNXI)$(CONFIG_SPL),yy)
873 ALL-y += u-boot-sunxi-with-spl.bin
876 # enable combined SPL/u-boot/dtb rules for tegra
877 ifeq ($(CONFIG_TEGRA)$(CONFIG_SPL),yy)
878 ALL-y += u-boot-tegra.bin u-boot-nodtb-tegra.bin
879 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb-tegra.bin
882 ALL-$(CONFIG_ARCH_MEDIATEK) += u-boot-mtk.bin
884 # Add optional build target if defined in board/cpu/soc headers
885 ifneq ($(CONFIG_BUILD_TARGET),)
886 ALL-y += $(CONFIG_BUILD_TARGET:"%"=%)
889 ifdef CONFIG_INIT_SP_RELATIVE
890 ALL-y += init_sp_bss_offset_check
893 ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
894 ALL-y += u-boot-with-dtb.bin
897 ifeq ($(CONFIG_ARCH_ROCKCHIP)$(CONFIG_SPL)$(CONFIG_TPL),yyy)
898 ALL-y += idbloader.img
901 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
903 # Avoid 'Not enough room for program headers' error on binutils 2.28 onwards.
904 LDFLAGS_u-boot += $(call ld-option, --no-dynamic-linker)
906 ifeq ($(CONFIG_ARC)$(CONFIG_NIOS2)$(CONFIG_X86)$(CONFIG_XTENSA),)
907 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
910 # Normally we fill empty space with 0xff
911 quiet_cmd_objcopy = OBJCOPY $@
912 cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \
913 $(OBJCOPYFLAGS_$(@F)) $< $@
915 # Provide a version which does not do this, for use by EFI
916 quiet_cmd_zobjcopy = OBJCOPY $@
917 cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
919 quiet_cmd_efipayload = OBJCOPY $@
920 cmd_efipayload = $(OBJCOPY) -I binary -O $(EFIPAYLOAD_BFDTARGET) -B $(EFIPAYLOAD_BFDARCH) $< $@
922 MKIMAGEOUTPUT ?= /dev/null
924 quiet_cmd_mkimage = MKIMAGE $@
925 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
926 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
928 quiet_cmd_mkfitimage = MKIMAGE $@
929 cmd_mkfitimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -f $(U_BOOT_ITS) -p $(CONFIG_FIT_EXTERNAL_OFFSET) $@\
930 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
932 quiet_cmd_cat = CAT $@
933 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
935 append = cat $(filter-out $< $(PHONY), $^) >> $@
937 quiet_cmd_pad_cat = CAT $@
938 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
942 quiet_cmd_cfgcheck = CFGCHK $2
943 cmd_cfgcheck = $(srctree)/scripts/check-config.sh $2 \
944 $(srctree)/scripts/config_whitelist.txt $(srctree)
947 ifeq ($(CONFIG_DEPRECATED),y)
948 $(warning "You have deprecated configuration options enabled in your .config! Please check your configuration.")
949 ifeq ($(CONFIG_SPI),y)
950 ifneq ($(CONFIG_DM_SPI)$(CONFIG_OF_CONTROL),yy)
951 $(warning "The relevant config item with associated code will remove in v2019.07 release.")
955 ifneq ($(CONFIG_DM),y)
956 @echo >&2 "===================== WARNING ======================"
957 @echo >&2 "This board does not use CONFIG_DM. CONFIG_DM will be"
958 @echo >&2 "compulsory starting with the v2020.01 release."
959 @echo >&2 "Failure to update may result in board removal."
960 @echo >&2 "See doc/driver-model/migration.rst for more info."
961 @echo >&2 "===================================================="
963 ifeq ($(CONFIG_MMC),y)
964 ifneq ($(CONFIG_DM_MMC)$(CONFIG_OF_CONTROL)$(CONFIG_BLK),yyy)
965 @echo >&2 "===================== WARNING ======================"
966 @echo >&2 "This board does not use CONFIG_DM_MMC. Please update"
967 @echo >&2 "the board to use CONFIG_DM_MMC before the v2019.04 release."
968 @echo >&2 "Failure to update by the deadline may result in board removal."
969 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
970 @echo >&2 "===================================================="
973 ifeq ($(CONFIG_USB),y)
974 ifneq ($(CONFIG_DM_USB)$(CONFIG_OF_CONTROL)$(CONFIG_BLK),yyy)
975 @echo >&2 "===================== WARNING ======================"
976 @echo >&2 "This board does not use CONFIG_DM_USB. Please update"
977 @echo >&2 "the board to use CONFIG_DM_USB before the v2019.07 release."
978 @echo >&2 "Failure to update by the deadline may result in board removal."
979 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
980 @echo >&2 "===================================================="
983 ifeq ($(CONFIG_MVSATA_IDE),y)
984 @echo >&2 "===================== WARNING ======================"
985 @echo >&2 "This board does use CONFIG_MVSATA_IDE which is not"
986 @echo >&2 "ported to driver-model (DM) yet. Please update the storage"
987 @echo >&2 "controller driver to use CONFIG_AHCI before the v2019.07"
989 @echo >&2 "Failure to update by the deadline may result in board removal."
990 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
991 @echo >&2 "===================================================="
993 ifeq ($(CONFIG_LIBATA),y)
994 ifneq ($(CONFIG_AHCI),y)
995 @echo >&2 "===================== WARNING ======================"
996 @echo >&2 "This board does use CONFIG_LIBATA but has CONFIG_AHCI not"
997 @echo >&2 "enabled. Please update the storage controller driver to use"
998 @echo >&2 "CONFIG_AHCI before the v2019.07 release."
999 @echo >&2 "Failure to update by the deadline may result in board removal."
1000 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
1001 @echo >&2 "===================================================="
1004 ifeq ($(CONFIG_PCI),y)
1005 ifneq ($(CONFIG_DM_PCI),y)
1006 @echo >&2 "===================== WARNING ======================"
1007 @echo >&2 "This board does not use CONFIG_DM_PCI Please update"
1008 @echo >&2 "the board to use CONFIG_DM_PCI before the v2019.07 release."
1009 @echo >&2 "Failure to update by the deadline may result in board removal."
1010 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
1011 @echo >&2 "===================================================="
1014 ifneq ($(CONFIG_LCD)$(CONFIG_VIDEO),)
1015 ifneq ($(CONFIG_DM_VIDEO),y)
1016 @echo >&2 "===================== WARNING ======================"
1017 @echo >&2 "This board does not use CONFIG_DM_VIDEO Please update"
1018 @echo >&2 "the board to use CONFIG_DM_VIDEO before the v2019.07 release."
1019 @echo >&2 "Failure to update by the deadline may result in board removal."
1020 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
1021 @echo >&2 "===================================================="
1024 ifeq ($(CONFIG_OF_EMBED),y)
1025 @echo >&2 "===================== WARNING ======================"
1026 @echo >&2 "CONFIG_OF_EMBED is enabled. This option should only"
1027 @echo >&2 "be used for debugging purposes. Please use"
1028 @echo >&2 "CONFIG_OF_SEPARATE for boards in mainline."
1029 @echo >&2 "See doc/README.fdt-control for more info."
1030 @echo >&2 "===================================================="
1032 ifeq ($(CONFIG_SPI_FLASH),y)
1033 ifneq ($(CONFIG_DM_SPI_FLASH)$(CONFIG_OF_CONTROL),yy)
1034 @echo >&2 "===================== WARNING ======================"
1035 @echo >&2 "This board does not use CONFIG_DM_SPI_FLASH. Please update"
1036 @echo >&2 "the board to use CONFIG_SPI_FLASH before the v2019.07 release."
1037 @echo >&2 "Failure to update by the deadline may result in board removal."
1038 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
1039 @echo >&2 "===================================================="
1042 ifneq ($(CONFIG_WATCHDOG)$(CONFIG_HW_WATCHDOG),)
1043 ifneq ($(CONFIG_WDT),y)
1044 @echo >&2 "===================== WARNING ======================"
1045 @echo >&2 "This board does not use CONFIG_WDT (DM watchdog support)."
1046 @echo >&2 "Please update the board to use CONFIG_WDT before the"
1047 @echo >&2 "v2019.10 release."
1048 @echo >&2 "Failure to update by the deadline may result in board removal."
1049 @echo >&2 "See doc/driver-model/MIGRATION.txt for more info."
1050 @echo >&2 "===================================================="
1053 ifneq ($(CONFIG_NET),)
1054 ifneq ($(CONFIG_DM_ETH),y)
1055 @echo >&2 "===================== WARNING ======================"
1056 @echo >&2 "This board does not use CONFIG_DM_ETH (Driver Model"
1057 @echo >&2 "for Ethernet drivers). Please update the board to use"
1058 @echo >&2 "CONFIG_DM_ETH before the v2020.07 release. Failure to"
1059 @echo >&2 "update by the deadline may result in board removal."
1060 @echo >&2 "See doc/driver-model/migration.rst for more info."
1061 @echo >&2 "===================================================="
1064 @# Check that this build does not use CONFIG options that we do not
1065 @# know about unless they are in Kconfig. All the existing CONFIG
1066 @# options are whitelisted, so new ones should not be added.
1067 $(call cmd,cfgcheck,u-boot.cfg)
1073 $(Q)$(MAKE) $(build)=dts dtbs
1075 quiet_cmd_copy = COPY $@
1078 ifeq ($(CONFIG_MULTI_DTB_FIT),y)
1080 ifeq ($(CONFIG_MULTI_DTB_FIT_LZO),y)
1081 FINAL_DTB_CONTAINER = fit-dtb.blob.lzo
1082 else ifeq ($(CONFIG_MULTI_DTB_FIT_GZIP),y)
1083 FINAL_DTB_CONTAINER = fit-dtb.blob.gz
1085 FINAL_DTB_CONTAINER = fit-dtb.blob
1088 fit-dtb.blob.gz: fit-dtb.blob
1091 fit-dtb.blob.lzo: fit-dtb.blob
1094 fit-dtb.blob: dts/dt.dtb FORCE
1095 $(call if_changed,mkimage)
1096 ifneq ($(SOURCE_DATE_EPOCH),)
1097 touch -d @$(SOURCE_DATE_EPOCH) fit-dtb.blob
1098 chmod 0600 fit-dtb.blob
1101 MKIMAGEFLAGS_fit-dtb.blob = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
1103 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) -d /dev/null
1106 u-boot-fit-dtb.bin: u-boot-nodtb.bin $(EXT_DTB)
1107 $(call if_changed,cat)
1109 u-boot-fit-dtb.bin: u-boot-nodtb.bin $(FINAL_DTB_CONTAINER)
1110 $(call if_changed,cat)
1113 u-boot.bin: u-boot-fit-dtb.bin FORCE
1114 $(call if_changed,copy)
1116 u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE
1117 $(call if_changed,cat)
1119 else ifeq ($(CONFIG_OF_SEPARATE),y)
1120 u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE
1121 $(call if_changed,cat)
1123 u-boot.bin: u-boot-dtb.bin FORCE
1124 $(call if_changed,copy)
1126 u-boot.bin: u-boot-nodtb.bin FORCE
1127 $(call if_changed,copy)
1130 # we call Makefile in arch/arm/mach-imx which
1131 # has targets which are dependent on targets defined
1132 # here. make could not resolve them and we must ensure
1133 # that they are finished before calling imx targets
1134 ifeq ($(CONFIG_MULTI_DTB_FIT),y)
1135 IMX_DEPS = u-boot-fit-dtb.bin
1138 %.imx: $(IMX_DEPS) %.bin
1139 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1143 $(Q)$(MAKE) $(build)=arch/arm/cpu/armv7/vf610 $@
1145 quiet_cmd_copy = COPY $@
1148 u-boot.dtb: dts/dt.dtb
1151 OBJCOPYFLAGS_u-boot.hex := -O ihex
1153 OBJCOPYFLAGS_u-boot.srec := -O srec
1155 u-boot.hex u-boot.srec: u-boot FORCE
1156 $(call if_changed,objcopy)
1158 OBJCOPYFLAGS_u-boot-elf.srec := $(OBJCOPYFLAGS_u-boot.srec)
1160 u-boot-elf.srec: u-boot.elf FORCE
1161 $(call if_changed,objcopy)
1163 OBJCOPYFLAGS_u-boot-spl.srec = $(OBJCOPYFLAGS_u-boot.srec)
1165 spl/u-boot-spl.srec: spl/u-boot-spl FORCE
1166 $(call if_changed,objcopy)
1169 $(Q)$(MAKE) $(build)=arch/arm/mach-rmobile $@
1171 OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \
1172 $(if $(CONFIG_X86_16BIT_INIT),-R .start16 -R .resetvec) \
1173 $(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR),-R .bootpg -R .resetvec)
1175 OBJCOPYFLAGS_u-boot-spl.hex = $(OBJCOPYFLAGS_u-boot.hex)
1177 spl/u-boot-spl.hex: spl/u-boot-spl FORCE
1178 $(call if_changed,objcopy)
1180 binary_size_check: u-boot-nodtb.bin FORCE
1181 @file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \
1182 map_size=$(shell cat u-boot.map | \
1183 awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
1186 if [ "" != "$$map_size" ]; then \
1187 if test $$map_size -ne $$file_size; then \
1188 echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
1189 echo " but u-boot-nodtb.bin shows $$file_size" >&2 ; \
1194 ifdef CONFIG_INIT_SP_RELATIVE
1195 ifneq ($(CONFIG_SYS_MALLOC_F_LEN),)
1196 subtract_sys_malloc_f_len = space=$$(($${space} - $(CONFIG_SYS_MALLOC_F_LEN)))
1198 subtract_sys_malloc_f_len = true
1200 # The 1/4 margin below is somewhat arbitrary. The likely initial SP usage is
1201 # so low that the DTB could probably use 90%+ of the available space, for
1202 # current values of CONFIG_SYS_INIT_SP_BSS_OFFSET at least. However, let's be
1203 # safe for now and tweak this later if space becomes tight.
1204 # A rejected alternative would be to check that some absolute minimum stack
1205 # space was available. However, since CONFIG_SYS_INIT_SP_BSS_OFFSET is
1206 # deliberately build-specific, to take account of build-to-build stack usage
1207 # differences due to different feature sets, there is no common absolute value
1209 init_sp_bss_offset_check: u-boot.dtb FORCE
1210 @dtb_size=$(shell wc -c u-boot.dtb | awk '{print $$1}') ; \
1211 space=$(CONFIG_SYS_INIT_SP_BSS_OFFSET) ; \
1212 $(subtract_sys_malloc_f_len) ; \
1213 quarter_space=$$(($${space} / 4)) ; \
1214 if [ $${dtb_size} -gt $${quarter_space} ]; then \
1215 echo "u-boot.dtb is larger than 1 quarter of " >&2 ; \
1216 echo "(CONFIG_SYS_INIT_SP_BSS_OFFSET - CONFIG_SYS_MALLOC_F_LEN)" >&2 ; \
1221 u-boot-nodtb.bin: u-boot FORCE
1222 $(call if_changed,objcopy)
1223 $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
1228 $(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS)
1232 # ---------------------------------------------------------------------------
1233 # Use 'make BINMAN_DEBUG=1' to enable debugging
1234 quiet_cmd_binman = BINMAN $@
1235 cmd_binman = $(srctree)/tools/binman/binman $(if $(BINMAN_DEBUG),-D) \
1236 --toolpath $(objtree)/tools \
1237 $(if $(BINMAN_VERBOSE),-v$(BINMAN_VERBOSE)) \
1238 build -u -d u-boot.dtb -O . -m \
1239 -I . -I $(srctree) -I $(srctree)/board/$(BOARDDIR) \
1242 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
1244 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
1246 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
1247 $(call if_changed,objcopy)
1250 # U-Boot entry point, needed for booting of full-blown U-Boot
1251 # from the SPL U-Boot version.
1253 ifndef CONFIG_SYS_UBOOT_START
1254 CONFIG_SYS_UBOOT_START := 0
1257 # Boards with more complex image requirements can provide an .its source file
1258 # or a generator script
1259 ifneq ($(CONFIG_SPL_FIT_SOURCE),"")
1260 U_BOOT_ITS = $(subst ",,$(CONFIG_SPL_FIT_SOURCE))
1262 ifneq ($(CONFIG_SPL_FIT_GENERATOR),"")
1263 U_BOOT_ITS := u-boot.its
1264 ifeq ($(CONFIG_SPL_FIT_GENERATOR),"arch/arm/mach-imx/mkimage_fit_atf.sh")
1265 U_BOOT_ITS_DEPS += u-boot-nodtb.bin
1267 ifeq ($(CONFIG_SPL_FIT_GENERATOR),"arch/arm/mach-rockchip/make_fit_atf.py")
1268 U_BOOT_ITS_DEPS += u-boot
1270 $(U_BOOT_ITS): $(U_BOOT_ITS_DEPS) FORCE
1271 $(srctree)/$(CONFIG_SPL_FIT_GENERATOR) \
1272 $(patsubst %,arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) > $@
1276 ifdef CONFIG_SPL_LOAD_FIT
1277 MKIMAGEFLAGS_u-boot.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
1278 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1279 -p $(CONFIG_FIT_EXTERNAL_OFFSET) \
1280 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \
1281 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST)))
1283 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
1284 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1285 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
1286 MKIMAGEFLAGS_u-boot-ivt.img = -A $(ARCH) -T firmware_ivt -C none -O u-boot \
1287 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1288 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
1289 u-boot-ivt.img: MKIMAGEOUTPUT = u-boot-ivt.img.log
1290 CLEAN_FILES += u-boot-ivt.img.log u-boot-dtb.imx.log SPL.log u-boot.imx.log
1293 MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
1295 # Some boards have the kwbimage.cfg file written in advance, while some
1296 # other boards generate it on the fly during the build in the build tree.
1297 # Let's check if the file exists in the build tree first, otherwise we
1298 # fall back to use the one in the source tree.
1299 KWD_CONFIG_FILE = $(shell \
1300 if [ -f $(objtree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) ]; then \
1301 echo -n $(objtree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%); \
1303 echo -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%); \
1306 MKIMAGEFLAGS_u-boot.kwb = -n $(KWD_CONFIG_FILE) \
1307 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
1309 MKIMAGEFLAGS_u-boot-spl.kwb = -n $(KWD_CONFIG_FILE) \
1310 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \
1311 $(if $(KEYDIR),-k $(KEYDIR))
1313 MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1314 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
1316 ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
1317 UBOOT_BIN := u-boot-with-dtb.bin
1319 UBOOT_BIN := u-boot.bin
1322 u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl u-boot-ivt.img: \
1323 $(if $(CONFIG_SPL_LOAD_FIT),u-boot-nodtb.bin \
1324 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_OF_HOSTFILE),dts/dt.dtb) \
1325 ,$(UBOOT_BIN)) FORCE
1326 $(call if_changed,mkimage)
1329 ifeq ($(CONFIG_SPL_LOAD_FIT_FULL),y)
1330 MKIMAGEFLAGS_u-boot.itb =
1332 MKIMAGEFLAGS_u-boot.itb = -E
1335 u-boot.itb: u-boot-nodtb.bin \
1336 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_OF_HOSTFILE),dts/dt.dtb) \
1338 $(call if_changed,mkfitimage)
1341 u-boot-spl.kwb: u-boot.img spl/u-boot-spl.bin FORCE
1342 $(call if_changed,mkimage)
1344 u-boot.sha1: u-boot.bin
1345 tools/ubsha1 u-boot.bin
1348 $(OBJDUMP) -d $< > $@
1350 ifneq ($(CONFIG_SPL_PAYLOAD),)
1351 SPL_PAYLOAD := $(CONFIG_SPL_PAYLOAD:"%"=%)
1353 SPL_PAYLOAD := u-boot.bin
1356 SPL_IMAGE := $(CONFIG_SPL_IMAGE:"%"=%)
1358 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
1359 --pad-to=$(CONFIG_SPL_PAD_TO)
1360 u-boot-with-spl.bin: $(SPL_IMAGE) $(SPL_PAYLOAD) FORCE
1361 $(call if_changed,pad_cat)
1363 ifeq ($(CONFIG_ARCH_ROCKCHIP),y)
1364 MKIMAGEFLAGS_u-boot-tpl.img = -n $(CONFIG_SYS_SOC) -T rksd
1365 tpl/u-boot-tpl.img: tpl/u-boot-tpl.bin FORCE
1366 $(call if_changed,mkimage)
1367 idbloader.img: tpl/u-boot-tpl.img spl/u-boot-spl.bin FORCE
1368 $(call if_changed,cat)
1371 ifeq ($(CONFIG_ARCH_LPC32XX)$(CONFIG_SPL),yy)
1372 MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE)
1374 lpc32xx-spl.img: spl/u-boot-spl.bin FORCE
1375 $(call if_changed,mkimage)
1377 OBJCOPYFLAGS_lpc32xx-boot-0.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1379 lpc32xx-boot-0.bin: lpc32xx-spl.img FORCE
1380 $(call if_changed,objcopy)
1382 OBJCOPYFLAGS_lpc32xx-boot-1.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1384 lpc32xx-boot-1.bin: lpc32xx-spl.img FORCE
1385 $(call if_changed,objcopy)
1387 lpc32xx-full.bin: lpc32xx-boot-0.bin lpc32xx-boot-1.bin u-boot.img FORCE
1388 $(call if_changed,cat)
1390 CLEAN_FILES += lpc32xx-*
1393 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
1394 --pad-to=$(CONFIG_TPL_PAD_TO)
1395 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
1396 $(call if_changed,pad_cat)
1398 SPL: spl/u-boot-spl.bin FORCE
1399 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1401 ifeq ($(CONFIG_ARCH_IMX8M)$(CONFIG_ARCH_IMX8), y)
1402 ifeq ($(CONFIG_SPL_LOAD_IMX_CONTAINER), y)
1403 u-boot.cnt: u-boot.bin FORCE
1404 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1406 flash.bin: spl/u-boot-spl.bin u-boot.cnt FORCE
1407 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1409 flash.bin: spl/u-boot-spl.bin u-boot.itb FORCE
1410 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1414 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
1415 $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1417 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
1419 u-boot.ubl: u-boot-with-spl.bin FORCE
1420 $(call if_changed,mkimage)
1422 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
1423 $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
1424 -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
1425 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
1426 $(call if_changed,mkimage)
1428 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1429 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
1430 $(call if_changed,pad_cat)
1432 u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
1433 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
1434 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
1435 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
1437 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
1438 # Both images are created using mkimage (crc etc), so that the ROM
1439 # bootloader can check its integrity. Padding needs to be done to the
1440 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
1441 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
1442 # The resulting image containing both U-Boot images is called u-boot.spr
1443 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
1444 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
1445 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
1446 $(call if_changed,mkimage)
1448 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1450 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
1451 $(call if_changed,pad_cat)
1453 ifneq ($(CONFIG_ARCH_SOCFPGA),)
1454 quiet_cmd_socboot = SOCBOOT $@
1455 cmd_socboot = cat spl/u-boot-spl.sfp spl/u-boot-spl.sfp \
1456 spl/u-boot-spl.sfp spl/u-boot-spl.sfp \
1457 u-boot.img > $@ || rm -f $@
1458 u-boot-with-spl.sfp: spl/u-boot-spl.sfp u-boot.img FORCE
1459 $(call if_changed,socboot)
1462 ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
1463 u-boot-with-dtb.bin: u-boot.bin u-boot.dtb \
1464 $(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR), u-boot-br.bin) FORCE
1465 $(call if_changed,binman)
1467 ifeq ($(CONFIG_MPC85XX_HAVE_RESET_VECTOR),y)
1468 OBJCOPYFLAGS_u-boot-br.bin := -O binary -j .bootpg -j .resetvec
1469 u-boot-br.bin: u-boot FORCE
1470 $(call if_changed,objcopy)
1474 # x86 uses a large ROM. We fill it with 0xff, put the 16-bit stuff (including
1475 # reset vector) at the top, Intel ME descriptor at the bottom, and U-Boot in
1476 # the middle. This is handled by binman based on an image description in the
1477 # board's device tree.
1478 ifneq ($(CONFIG_X86_RESET_VECTOR),)
1479 rom: u-boot.rom FORCE
1481 refcode.bin: $(srctree)/board/$(BOARDDIR)/refcode.bin FORCE
1482 $(call if_changed,copy)
1484 quiet_cmd_ldr = LD $@
1485 cmd_ldr = $(LD) $(LDFLAGS_$(@F)) \
1486 $(filter-out FORCE,$^) -o $@
1488 u-boot.rom: u-boot-x86-start16.bin u-boot-x86-reset16.bin u-boot.bin \
1489 $(if $(CONFIG_SPL_X86_16BIT_INIT),spl/u-boot-spl.bin) \
1490 $(if $(CONFIG_TPL_X86_16BIT_INIT),tpl/u-boot-tpl.bin) \
1491 $(if $(CONFIG_HAVE_REFCODE),refcode.bin) FORCE
1492 $(call if_changed,binman)
1494 OBJCOPYFLAGS_u-boot-x86-start16.bin := -O binary -j .start16
1495 u-boot-x86-start16.bin: u-boot FORCE
1496 $(call if_changed,objcopy)
1498 OBJCOPYFLAGS_u-boot-x86-reset16.bin := -O binary -j .resetvec
1499 u-boot-x86-reset16.bin: u-boot FORCE
1500 $(call if_changed,objcopy)
1503 ifneq ($(CONFIG_ARCH_SUNXI),)
1504 ifeq ($(CONFIG_ARM64),)
1505 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img u-boot.dtb FORCE
1506 $(call if_changed,binman)
1508 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.itb FORCE
1509 $(call if_changed,cat)
1513 ifneq ($(CONFIG_TEGRA),)
1514 ifneq ($(CONFIG_BINMAN),)
1515 # Makes u-boot-dtb-tegra.bin u-boot-tegra.bin u-boot-nodtb-tegra.bin
1516 %-dtb-tegra.bin %-tegra.bin %-nodtb-tegra.bin: \
1517 spl/%-spl %.bin FORCE
1518 $(call if_changed,binman)
1520 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1521 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot-nodtb.bin FORCE
1522 $(call if_changed,pad_cat)
1524 OBJCOPYFLAGS_u-boot-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1525 u-boot-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
1526 $(call if_changed,pad_cat)
1528 u-boot-dtb-tegra.bin: u-boot-tegra.bin FORCE
1529 $(call if_changed,copy)
1533 OBJCOPYFLAGS_u-boot-app.efi := $(OBJCOPYFLAGS_EFI)
1534 u-boot-app.efi: u-boot FORCE
1535 $(call if_changed,zobjcopy)
1537 u-boot.bin.o: u-boot.bin FORCE
1538 $(call if_changed,efipayload)
1540 u-boot-payload.lds: $(LDSCRIPT_EFI) FORCE
1541 $(call if_changed_dep,cpp_lds)
1543 # Rule to link the EFI payload which contains a stub and a U-Boot binary
1544 quiet_cmd_u-boot_payload ?= LD $@
1545 cmd_u-boot_payload ?= $(LD) $(LDFLAGS_EFI_PAYLOAD) -o $@ \
1546 -T u-boot-payload.lds arch/x86/cpu/call32.o \
1547 lib/efi/efi.o lib/efi/efi_stub.o u-boot.bin.o \
1548 $(addprefix arch/$(ARCH)/lib/,$(EFISTUB))
1550 u-boot-payload: u-boot.bin.o u-boot-payload.lds FORCE
1551 $(call if_changed,u-boot_payload)
1553 OBJCOPYFLAGS_u-boot-payload.efi := $(OBJCOPYFLAGS_EFI)
1554 u-boot-payload.efi: u-boot-payload FORCE
1555 $(call if_changed,zobjcopy)
1557 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
1558 $(call if_changed,cat)
1560 #Add a target to create boot binary having SPL binary in PBI format
1561 #concatenated with u-boot binary. It is need by PowerPC SoC having
1562 #internal SRAM <= 512KB.
1563 MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1564 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \
1565 -A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE)
1567 spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
1568 $(call if_changed,mkimage)
1571 UBOOT_BINLOAD := u-boot.img
1573 ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
1574 UBOOT_BINLOAD := u-boot-with-dtb.bin
1576 UBOOT_BINLOAD := u-boot.bin
1580 OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1583 u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE
1584 $(call if_changed,pad_cat)
1586 # PPC4xx needs the SPL at the end of the image, since the reset vector
1587 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
1588 # and need to introduce a new build target with the full blown U-Boot
1589 # at the start padded up to the start of the SPL image. And then concat
1590 # the SPL image to the end.
1592 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
1593 --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
1594 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
1595 $(call if_changed,pad_cat)
1597 # Create a new ELF from a raw binary file.
1598 ifndef PLATFORM_ELFENTRY
1599 PLATFORM_ELFENTRY = "_start"
1601 quiet_cmd_u-boot-elf ?= LD $@
1602 cmd_u-boot-elf ?= $(LD) u-boot-elf.o -o $@ \
1603 --defsym=$(PLATFORM_ELFENTRY)=$(CONFIG_SYS_TEXT_BASE) \
1604 -Ttext=$(CONFIG_SYS_TEXT_BASE)
1605 u-boot.elf: u-boot.bin
1606 $(Q)$(OBJCOPY) -I binary $(PLATFORM_ELFFLAGS) $< u-boot-elf.o
1607 $(call if_changed,u-boot-elf)
1609 # MediaTek's ARM-based u-boot needs a header to contains its load address
1610 # which is parsed by the BootROM.
1611 # If the SPL build is enabled, the header will be added to the spl binary,
1612 # and the spl binary and the u-boot.img will be combined into one file.
1613 # Otherwise the header will be added to the u-boot.bin directly.
1615 ifeq ($(CONFIG_SPL),y)
1616 spl/u-boot-spl-mtk.bin: spl/u-boot-spl
1618 u-boot-mtk.bin: u-boot.dtb u-boot.img spl/u-boot-spl-mtk.bin FORCE
1619 $(call if_changed,binman)
1621 MKIMAGEFLAGS_u-boot-mtk.bin = -T mtk_image \
1622 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \
1623 -n "$(patsubst "%",%,$(CONFIG_MTK_BROM_HEADER_INFO))"
1625 u-boot-mtk.bin: u-boot.bin FORCE
1626 $(call if_changed,mkimage)
1629 ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(ARCH)/Makefile.postlink)
1631 # Rule to link u-boot
1632 # May be overridden by arch/$(ARCH)/config.mk
1633 quiet_cmd_u-boot__ ?= LD $@
1634 cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
1635 -T u-boot.lds $(u-boot-init) \
1636 --start-group $(u-boot-main) --end-group \
1637 $(PLATFORM_LIBS) -Map u-boot.map; \
1638 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
1640 quiet_cmd_smap = GEN common/system_map.o
1642 smap=`$(call SYSTEM_MAP,u-boot) | \
1643 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
1644 $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
1645 -c $(srctree)/common/system_map.c -o common/system_map.o
1647 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds FORCE
1648 +$(call if_changed,u-boot__)
1649 ifeq ($(CONFIG_KALLSYMS),y)
1651 $(call cmd,u-boot__) common/system_map.o
1654 ifeq ($(CONFIG_RISCV),y)
1655 @tools/prelink-riscv $@ 0
1658 quiet_cmd_sym ?= SYM $@
1659 cmd_sym ?= $(OBJDUMP) -t $< > $@
1660 u-boot.sym: u-boot FORCE
1661 $(call if_changed,sym)
1663 # The actual objects are generated when descending,
1664 # make sure no implicit rule kicks in
1665 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
1667 # Handle descending into subdirectories listed in $(vmlinux-dirs)
1668 # Preset locale variables to speed up the build process. Limit locale
1669 # tweaks to this spot to avoid wrong language settings when running
1670 # make menuconfig etc.
1671 # Error messages still appears in the original language
1673 PHONY += $(u-boot-dirs)
1674 $(u-boot-dirs): prepare scripts
1675 $(Q)$(MAKE) $(build)=$@
1678 # The "tools" are needed early
1679 $(filter-out tools, $(u-boot-dirs)): tools
1680 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
1681 # is "yes"), so compile examples after U-Boot is compiled.
1682 examples: $(filter-out examples, $(u-boot-dirs))
1684 define filechk_uboot.release
1685 echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1688 # Store (new) UBOOTRELEASE string in include/config/uboot.release
1689 include/config/uboot.release: include/config/auto.conf FORCE
1690 $(call filechk,uboot.release)
1693 # Things we need to do before we recursively start building the kernel
1694 # or the modules are listed in "prepare".
1695 # A multi level approach is used. prepareN is processed before prepareN-1.
1696 # archprepare is used in arch Makefiles and when processed asm symlink,
1697 # version.h and scripts_basic is processed / created.
1699 # Listed in dependency order
1700 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1702 # prepare3 is used to check if we are building in a separate output directory,
1704 # 1) Check that make has not been executed in the kernel src $(srctree)
1705 prepare3: include/config/uboot.release
1706 ifneq ($(KBUILD_SRC),)
1707 @$(kecho) ' Using $(srctree) as source for U-Boot'
1708 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
1709 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
1710 echo >&2 " in the '$(srctree)' directory.";\
1715 # prepare2 creates a makefile if using a separate output directory
1716 prepare2: prepare3 outputmakefile cfg
1718 prepare1: prepare2 $(version_h) $(timestamp_h) \
1719 include/config/auto.conf
1720 ifeq ($(wildcard $(LDSCRIPT)),)
1721 @echo >&2 " Could not find linker script."
1725 ifeq ($(CONFIG_USE_DEFAULT_ENV_FILE),y)
1726 prepare1: $(defaultenv_h)
1729 archprepare: prepare1 scripts_basic
1731 prepare0: archprepare FORCE
1732 $(Q)$(MAKE) $(build)=.
1734 # All the preparing..
1737 # Generate some files
1738 # ---------------------------------------------------------------------------
1740 define filechk_version.h
1741 (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1742 echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1743 echo \#define CC_VERSION_STRING \"$$(LC_ALL=C $(CC) --version | head -n 1)\"; \
1744 echo \#define LD_VERSION_STRING \"$$(LC_ALL=C $(LD) --version | head -n 1)\"; )
1747 # The SOURCE_DATE_EPOCH mechanism requires a date that behaves like GNU date.
1748 # The BSD date on the other hand behaves different and would produce errors
1749 # with the misused '-d' switch. Respect that and search a working date with
1750 # well known pre- and suffixes for the GNU variant of date.
1751 define filechk_timestamp.h
1752 (if test -n "$${SOURCE_DATE_EPOCH}"; then \
1753 SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \
1755 for date in gdate date.gnu date; do \
1756 $${date} -u -d "$${SOURCE_DATE}" >/dev/null 2>&1 && DATE="$${date}"; \
1758 if test -n "$${DATE}"; then \
1759 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DATE "%b %d %C%y"'; \
1760 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TIME "%T"'; \
1761 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TZ "%z"'; \
1762 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1763 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \
1768 LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1769 LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \
1770 LC_ALL=C date +'#define U_BOOT_TZ "%z"'; \
1771 LC_ALL=C date +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1772 LC_ALL=C date +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \
1776 define filechk_defaultenv.h
1780 sed -e 's/\\\x0/\n/g' | \
1781 xxd -i ; echo ", 0x00" ; )
1784 $(version_h): include/config/uboot.release FORCE
1785 $(call filechk,version.h)
1787 $(timestamp_h): $(srctree)/Makefile FORCE
1788 $(call filechk,timestamp.h)
1790 $(defaultenv_h): $(CONFIG_DEFAULT_ENV_FILE:"%"=%) FORCE
1791 $(call filechk,defaultenv.h)
1793 # ---------------------------------------------------------------------------
1794 quiet_cmd_cpp_lds = LDS $@
1795 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) \
1796 -D__ASSEMBLY__ -x assembler-with-cpp -std=c99 -P -o $@ $<
1798 u-boot.lds: $(LDSCRIPT) prepare FORCE
1799 $(call if_changed_dep,cpp_lds)
1801 spl/u-boot-spl.bin: spl/u-boot-spl
1805 spl/u-boot-spl: tools prepare \
1806 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb) \
1807 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_TPL_OF_PLATDATA),dts/dt.dtb)
1808 $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all
1810 spl/sunxi-spl.bin: spl/u-boot-spl
1813 spl/sunxi-spl-with-ecc.bin: spl/sunxi-spl.bin
1816 spl/u-boot-spl.sfp: spl/u-boot-spl
1819 spl/boot.bin: spl/u-boot-spl
1822 tpl/u-boot-tpl.bin: tools prepare \
1823 $(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb)
1824 $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
1827 TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
1833 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1834 -name '*.[chS]' -print`
1838 etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1839 -name '*.[chS]' -print`
1841 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1843 @find $(TAG_SUBDIRS) -name '*.[chS]' -type l -print | \
1844 grep -xvf - cscope.files > cscope.files.no-symlinks; \
1845 mv cscope.files.no-symlinks cscope.files
1850 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1853 @$(call SYSTEM_MAP,$<) > $@
1855 #########################################################################
1857 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1858 # R_AARCH64_RELATIVE (64-bit).
1859 checkarmreloc: u-boot
1860 @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1861 grep R_A | sort -u`"; \
1862 if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1863 "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1864 echo "$< contains unexpected relocations: $$RELOC"; \
1868 tools/version.h: include/version.h
1869 $(call if_changed,copy)
1871 envtools: scripts_basic $(version_h) $(timestamp_h) tools/version.h
1872 $(Q)$(MAKE) $(build)=tools/env
1874 tools-only: export TOOLS_ONLY=y
1875 tools-only: scripts_basic $(version_h) $(timestamp_h) tools/version.h
1876 $(Q)$(MAKE) $(build)=tools
1878 tools-all: export HOST_TOOLS_ALL=y
1879 tools-all: envtools tools ;
1881 cross_tools: export CROSS_BUILD_TOOLS=y
1882 cross_tools: tools ;
1886 git log --no-merges U-Boot-1_1_5.. | \
1887 unexpand -a | sed -e 's/\s\s*$$//' > $@
1889 #########################################################################
1892 # Cleaning is done on three levels.
1893 # make clean Delete most generated files
1894 # Leave enough to build external modules
1895 # make mrproper Delete the current configuration, and all generated files
1896 # make distclean Remove editor backup files, patch leftover files and the like
1898 # Directories & files removed with 'make clean'
1899 CLEAN_DIRS += $(MODVERDIR) \
1900 $(foreach d, spl tpl, $(patsubst %,$d/%, \
1901 $(filter-out include, $(shell ls -1 $d 2>/dev/null))))
1903 CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h tools/version.h \
1904 boot* u-boot* MLO* SPL System.map fit-dtb.blob*
1906 # Directories & files removed with 'make mrproper'
1907 MRPROPER_DIRS += include/config include/generated spl tpl \
1909 MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \
1910 ctags etags tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1911 drivers/video/fonts/*.S
1913 # clean - Delete most, but leave enough to build external modules
1915 clean: rm-dirs := $(CLEAN_DIRS)
1916 clean: rm-files := $(CLEAN_FILES)
1918 clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
1920 clean-dirs := $(addprefix _clean_, $(clean-dirs))
1922 PHONY += $(clean-dirs) clean archclean
1924 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1926 clean: $(clean-dirs)
1929 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1930 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1931 -o -name '*.ko.*' -o -name '*.su' -o -name '*.pyc' \
1932 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1933 -o -name '*.lex.c' -o -name '*.tab.[ch]' \
1934 -o -name '*.symtypes' -o -name 'modules.order' \
1935 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1936 -o -name 'dsdt.aml' -o -name 'dsdt.asl.tmp' -o -name 'dsdt.c' \
1937 -o -name '*.efi' -o -name '*.gcno' -o -name '*.so' \) \
1938 -type f -print | xargs rm -f \
1939 bl31.c bl31.elf bl31_*.bin image.map tispl.bin*
1941 # mrproper - Delete all generated files, including .config
1943 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1944 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1945 mrproper-dirs := $(addprefix _mrproper_,scripts)
1947 PHONY += $(mrproper-dirs) mrproper archmrproper
1949 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1951 mrproper: clean $(mrproper-dirs)
1954 @rm -f arch/*/include/asm/arch
1961 @find $(srctree) $(RCS_FIND_IGNORE) \
1962 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1963 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1964 -o -name '.*.rej' -o -name '*%' -o -name 'core' \
1965 -o -name '*.pyc' \) \
1966 -type f -print | xargs rm -f
1967 @rm -f boards.cfg CHANGELOG
1970 F=`basename $(srctree)` ; cd .. ; \
1971 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1974 @echo 'Cleaning targets:'
1975 @echo ' clean - Remove most generated files but keep the config'
1976 @echo ' mrproper - Remove all generated files + config + various backup files'
1977 @echo ' distclean - mrproper + remove editor backup and patch files'
1979 @echo 'Configuration targets:'
1980 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1982 @echo 'Test targets:'
1984 @echo ' check - Run all automated tests that use sandbox'
1985 @echo ' qcheck - Run quick automated tests that use sandbox'
1987 @echo 'Other generic targets:'
1988 @echo ' all - Build all necessary images depending on configuration'
1989 @echo ' tests - Build U-Boot for sandbox and run tests'
1990 @echo '* u-boot - Build the bare u-boot'
1991 @echo ' dir/ - Build all files in dir and below'
1992 @echo ' dir/file.[oisS] - Build specified target only'
1993 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1994 @echo ' (requires a recent binutils and recent build (System.map))'
1995 @echo ' tags/ctags - Generate ctags file for editors'
1996 @echo ' etags - Generate etags file for editors'
1997 @echo ' cscope - Generate cscope index'
1998 @echo ' ubootrelease - Output the release version string (use with make -s)'
1999 @echo ' ubootversion - Output the version stored in Makefile (use with make -s)'
2000 @echo " cfg - Don't build, just create the .cfg files"
2001 @echo " envtools - Build only the target-side environment tools"
2003 @echo 'Static analysers'
2004 @echo ' checkstack - Generate a list of stack hogs'
2005 @echo ' coccicheck - Execute static code analysis with Coccinelle'
2007 @echo 'Documentation targets:'
2008 @$(MAKE) -f $(srctree)/doc/Makefile dochelp
2010 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
2011 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
2012 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
2013 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
2014 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
2015 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
2016 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
2017 @echo ' 1: warnings which may be relevant and do not occur too often'
2018 @echo ' 2: warnings which occur quite often but may still be relevant'
2019 @echo ' 3: more obscure warnings, can most likely be ignored'
2020 @echo ' Multiple levels can be combined with W=12 or W=123'
2022 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
2023 @echo 'For further info see the ./README file'
2029 $(srctree)/test/run quick
2031 # Documentation targets
2032 # ---------------------------------------------------------------------------
2033 DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \
2034 linkcheckdocs dochelp refcheckdocs
2035 PHONY += $(DOC_TARGETS)
2036 $(DOC_TARGETS): scripts_basic FORCE
2037 $(Q)$(MAKE) $(build)=doc $@
2039 endif #ifeq ($(config-targets),1)
2040 endif #ifeq ($(mixed-targets),1)
2042 PHONY += checkstack ubootrelease ubootversion
2045 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
2046 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
2049 @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
2052 @echo $(UBOOTVERSION)
2055 # ---------------------------------------------------------------------------
2056 # Single targets are compatible with:
2057 # - build with mixed source and output
2058 # - build with separate output dir 'make O=...'
2059 # - external modules
2061 # target-dir => where to store outputfile
2062 # build-dir => directory in kernel source tree to use
2064 ifeq ($(KBUILD_EXTMOD),)
2065 build-dir = $(patsubst %/,%,$(dir $@))
2066 target-dir = $(dir $@)
2068 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
2069 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
2070 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
2073 %.s: %.c prepare scripts FORCE
2074 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2075 %.i: %.c prepare scripts FORCE
2076 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2077 %.o: %.c prepare scripts FORCE
2078 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2079 %.lst: %.c prepare scripts FORCE
2080 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2081 %.s: %.S prepare scripts FORCE
2082 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2083 %.o: %.S prepare scripts FORCE
2084 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2085 %.symtypes: %.c prepare scripts FORCE
2086 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
2089 /: prepare scripts FORCE
2091 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
2092 $(build)=$(build-dir)
2093 %/: prepare scripts FORCE
2095 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
2096 $(build)=$(build-dir)
2097 %.ko: prepare scripts FORCE
2099 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
2100 $(build)=$(build-dir) $(@:.ko=.o)
2101 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
2103 quiet_cmd_genenv = GENENV $@
2104 cmd_genenv = $(OBJCOPY) --dump-section .rodata.default_environment=$@ env/common.o; \
2105 sed --in-place -e 's/\x00/\x0A/g' $@
2107 u-boot-initial-env: u-boot.bin
2108 $(call if_changed,genenv)
2110 # Consistency checks
2111 # ---------------------------------------------------------------------------
2116 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
2118 # FIXME Should go into a make.lib or something
2119 # ===========================================================================
2121 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
2122 cmd_rmdirs = rm -rf $(rm-dirs)
2124 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
2125 cmd_rmfiles = rm -f $(rm-files)
2127 # read all saved command lines
2129 targets := $(wildcard $(sort $(targets)))
2130 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
2132 ifneq ($(cmd_files),)
2133 $(cmd_files): ; # Do not try to update included dependency files
2134 include $(cmd_files)
2137 endif # skip-makefile
2142 # Declare the contents of the .PHONY variable as phony. We keep that
2143 # information in a variable so we can use it in if_changed and friends.