2 # SPDX-License-Identifier: GPL-2.0+
12 # To see a list of typical targets execute "make help"
13 # More info can be located in ./README
14 # Comments in this file are targeted only to the developer, do not
15 # expect to learn how to build the kernel reading this file.
17 # o Do not use make's built-in rules and variables
18 # (this increases performance and avoids hard-to-debug behaviour);
19 # o Look for make include files relative to root of kernel src
20 MAKEFLAGS += -rR --include-dir=$(CURDIR)
22 # Avoid funny character set dependencies
26 export LC_COLLATE LC_NUMERIC
28 # Avoid interference with shell env settings
31 # We are using a recursive build, so we need to do a little thinking
32 # to get the ordering right.
34 # Most importantly: sub-Makefiles should only ever modify files in
35 # their own directory. If in some directory we have a dependency on
36 # a file in another dir (which doesn't happen often, but it's often
37 # unavoidable when linking the built-in.o targets which finally
38 # turn into vmlinux), we will call a sub make in that other dir, and
39 # after that we are sure that everything which is in that other dir
42 # The only cases where we need to modify files which have global
43 # effects are thus separated out and done before the recursive
44 # descending is started. They are now explicitly listed as the
48 # ---------------------------------------------------------------------------
50 # Normally, we echo the whole command before executing it. By making
51 # that echo $($(quiet)$(cmd)), we now have the possibility to set
52 # $(quiet) to choose other forms of output instead, e.g.
54 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
55 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
57 # If $(quiet) is empty, the whole command will be printed.
58 # If it is set to "quiet_", only the short version will be printed.
59 # If it is set to "silent_", nothing will be printed at all, since
60 # the variable $(silent_cmd_cc_o_c) doesn't exist.
62 # A simple variant is to prefix commands with $(Q) - that's useful
63 # for commands that shall be hidden in non-verbose mode.
67 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
68 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
70 # To put more focus on warnings, be less verbose as default
71 # Use 'make V=1' to see the full commands
73 ifeq ("$(origin V)", "command line")
80 ifeq ($(KBUILD_VERBOSE),1)
88 # If the user is running make -s (silent mode), suppress echoing of
91 ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4
92 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
96 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
101 export quiet Q KBUILD_VERBOSE
103 # kbuild supports saving output files in a separate directory.
104 # To locate output files in a separate directory two syntaxes are supported.
105 # In both cases the working directory must be the root of the kernel src.
107 # Use "make O=dir/to/store/output/files/"
109 # 2) Set KBUILD_OUTPUT
110 # Set the environment variable KBUILD_OUTPUT to point to the directory
111 # where the output files shall be placed.
112 # export KBUILD_OUTPUT=dir/to/store/output/files/
115 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
118 # KBUILD_SRC is set on invocation of make in OBJ directory
119 # KBUILD_SRC is not intended to be used by the regular user (for now)
120 ifeq ($(KBUILD_SRC),)
122 # OK, Make called in directory where kernel src resides
123 # Do we want to locate output files in a separate directory?
124 ifeq ("$(origin O)", "command line")
125 KBUILD_OUTPUT := $(O)
128 # That's our default target when none is given on the command line
132 # Cancel implicit rules on top Makefile
133 $(CURDIR)/Makefile Makefile: ;
135 ifneq ($(KBUILD_OUTPUT),)
136 # Invoke a second make in the output directory, passing relevant variables
137 # check that the output directory actually exists
138 saved-output := $(KBUILD_OUTPUT)
139 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
141 $(if $(KBUILD_OUTPUT),, \
142 $(error failed to create output directory "$(saved-output)"))
144 PHONY += $(MAKECMDGOALS) sub-make
146 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
150 $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
151 -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS))
153 # Leave processing to above invocation of make
155 endif # ifneq ($(KBUILD_OUTPUT),)
156 endif # ifeq ($(KBUILD_SRC),)
158 # We process the rest of the Makefile if this is the final invocation of make
159 ifeq ($(skip-makefile),)
161 # Do not print "Entering directory ...",
162 # but we want to display it when entering to the output directory
163 # so that IDEs/editors are able to understand relative filenames.
164 MAKEFLAGS += --no-print-directory
166 # Call a source code checker (by default, "sparse") as part of the
169 # Use 'make C=1' to enable checking of only re-compiled files.
170 # Use 'make C=2' to enable checking of *all* source files, regardless
171 # of whether they are re-compiled or not.
173 # See the file "Documentation/sparse.txt" for more details, including
174 # where to get the "sparse" utility.
176 ifeq ("$(origin C)", "command line")
177 KBUILD_CHECKSRC = $(C)
179 ifndef KBUILD_CHECKSRC
183 # Use make M=dir to specify directory of external module to build
184 # Old syntax make ... SUBDIRS=$PWD is still supported
185 # Setting the environment variable KBUILD_EXTMOD take precedence
187 KBUILD_EXTMOD ?= $(SUBDIRS)
190 ifeq ("$(origin M)", "command line")
191 KBUILD_EXTMOD := $(M)
194 # If building an external module we do not care about the all: rule
195 # but instead _all depend on modules
197 ifeq ($(KBUILD_EXTMOD),)
203 ifeq ($(KBUILD_SRC),)
204 # building in the source tree
207 ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
208 # building in a subdirectory of the source tree
211 srctree := $(KBUILD_SRC)
218 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
220 export srctree objtree VPATH
222 # Make sure CDPATH settings don't interfere
225 #########################################################################
227 HOSTARCH := $(shell uname -m | \
229 -e s/sun4u/sparc64/ \
232 -e s/ppc64/powerpc/ \
234 -e s/macppc/powerpc/\
237 HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
238 sed -e 's/\(cygwin\).*/cygwin/')
240 export HOSTARCH HOSTOS
242 #########################################################################
244 # set default to nothing for native builds
245 ifeq ($(HOSTARCH),$(ARCH))
249 KCONFIG_CONFIG ?= .config
250 export KCONFIG_CONFIG
252 # SHELL used by kbuild
253 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
254 else if [ -x /bin/bash ]; then echo /bin/bash; \
255 else echo sh; fi ; fi)
259 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
262 ifeq ($(HOSTOS),cygwin)
266 # Mac OS X / Darwin's C preprocessor is Apple specific. It
267 # generates numerous errors and warnings. We want to bypass it
268 # and use GNU C's cpp. To do this we pass the -traditional-cpp
269 # option to the compiler. Note that the -traditional-cpp flag
270 # DOES NOT have the same semantics as GNU C's flag, all it does
271 # is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
273 # Apple's linker is similar, thanks to the new 2 stage linking
274 # multiple symbol definitions are treated as errors, hence the
275 # -multiply_defined suppress option to turn off this error.
277 ifeq ($(HOSTOS),darwin)
278 # get major and minor product version (e.g. '10' and '6' for Snow Leopard)
279 DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.')
280 DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.')
282 os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
283 $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
285 # Snow Leopards build environment has no longer restrictions as described above
286 HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc")
287 HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp")
288 HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
290 # since Lion (10.7) ASLR is on by default, but we use linker generated lists
291 # in some host tools which is a problem then ... so disable ASLR for these
293 HOSTLDFLAGS += $(call os_x_before, 10, 7, "", "-Xlinker -no_pie")
296 # Decide whether to build built-in, modular, or both.
297 # Normally, just do built-in.
302 # If we have only "make modules", don't compile built-in objects.
303 # When we're building modules with modversions, we need to consider
304 # the built-in objects during the descend as well, in order to
305 # make sure the checksums are up to date before we record them.
307 ifeq ($(MAKECMDGOALS),modules)
308 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
311 # If we have "make <whatever> modules", compile modules
312 # in addition to whatever we do anyway.
313 # Just "make" or "make all" shall build modules as well
315 # U-Boot does not need modules
316 #ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
317 # KBUILD_MODULES := 1
320 #ifeq ($(MAKECMDGOALS),)
321 # KBUILD_MODULES := 1
324 export KBUILD_MODULES KBUILD_BUILTIN
325 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
327 # We need some generic definitions (do not try to remake the file).
328 scripts/Kbuild.include: ;
329 include scripts/Kbuild.include
331 # Make variables (CC, etc...)
333 AS = $(CROSS_COMPILE)as
335 ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
336 LD = $(CROSS_COMPILE)ld.bfd
338 LD = $(CROSS_COMPILE)ld
340 CC = $(CROSS_COMPILE)gcc
342 AR = $(CROSS_COMPILE)ar
343 NM = $(CROSS_COMPILE)nm
344 LDR = $(CROSS_COMPILE)ldr
345 STRIP = $(CROSS_COMPILE)strip
346 OBJCOPY = $(CROSS_COMPILE)objcopy
347 OBJDUMP = $(CROSS_COMPILE)objdump
354 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
355 -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
357 KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__
359 KBUILD_CFLAGS := -Wall -Wstrict-prototypes \
360 -Wno-format-security \
361 -fno-builtin -ffreestanding
362 KBUILD_AFLAGS := -D__ASSEMBLY__
364 # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
365 UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
366 UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
368 export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
369 export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
370 export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
371 export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
372 export MAKE AWK PERL PYTHON
373 export HOSTCXX HOSTCXXFLAGS DTC CHECK CHECKFLAGS
375 export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
376 export KBUILD_CFLAGS KBUILD_AFLAGS
378 # When compiling out-of-tree modules, put MODVERDIR in the module
379 # tree rather than in the kernel tree. The kernel tree might
381 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
383 # Files to ignore in find ... statements
385 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
386 -name CVS -o -name .pc -o -name .hg -o -name .git \) \
388 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
389 --exclude CVS --exclude .pc --exclude .hg --exclude .git
391 # ===========================================================================
392 # Rules shared between *config targets and build targets
394 # Basic helpers built in scripts/
395 PHONY += scripts_basic
397 $(Q)$(MAKE) $(build)=scripts/basic
398 $(Q)rm -f .tmp_quiet_recordmcount
400 # To avoid any implicit rule to kick in, define an empty command.
401 scripts/basic/%: scripts_basic ;
403 PHONY += outputmakefile
404 # outputmakefile generates a Makefile in the output directory, if using a
405 # separate output directory. This allows convenient use of make in the
408 ifneq ($(KBUILD_SRC),)
409 $(Q)ln -fsn $(srctree) source
410 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
411 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
414 # To make sure we do not include .config for any of the *config targets
415 # catch them early, and hand them over to scripts/kconfig/Makefile
416 # It is allowed to specify more targets when calling make, including
417 # mixing *config targets and build targets.
418 # For example 'make oldconfig all'.
419 # Detect when mixed targets is specified, and make a second invocation
420 # of make so .config is not included in this case either (for *config).
422 version_h := include/generated/version_autogenerated.h
423 timestamp_h := include/generated/timestamp_autogenerated.h
425 no-dot-config-targets := clean clobber mrproper distclean \
426 help %docs check% coccicheck \
433 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
434 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
439 ifeq ($(KBUILD_EXTMOD),)
440 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
442 ifneq ($(words $(MAKECMDGOALS)),1)
448 ifeq ($(mixed-targets),1)
449 # ===========================================================================
450 # We're called with mixed targets (*config and build targets).
451 # Handle them one by one.
453 PHONY += $(MAKECMDGOALS) __build_one_by_one
455 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
460 for i in $(MAKECMDGOALS); do \
461 $(MAKE) -f $(srctree)/Makefile $$i; \
465 ifeq ($(config-targets),1)
466 # ===========================================================================
467 # *config targets only - make sure prerequisites are updated, and descend
468 # in scripts/kconfig to make the *config target
470 KBUILD_DEFCONFIG := sandbox_defconfig
471 export KBUILD_DEFCONFIG KBUILD_KCONFIG
473 config: scripts_basic outputmakefile FORCE
474 $(Q)$(MAKE) $(build)=scripts/kconfig $@
476 %config: scripts_basic outputmakefile FORCE
477 $(Q)$(MAKE) $(build)=scripts/kconfig $@
480 # ===========================================================================
481 # Build targets only - this includes vmlinux, arch specific targets, clean
482 # targets and others. In general all targets except *config targets.
484 ifeq ($(dot-config),1)
486 -include include/config/auto.conf
488 # Read in dependencies to all Kconfig* files, make sure to run
489 # oldconfig if changes are detected.
490 -include include/config/auto.conf.cmd
492 # To avoid any implicit rule to kick in, define an empty command
493 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
495 # If .config is newer than include/config/auto.conf, someone tinkered
496 # with it and forgot to run make oldconfig.
497 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
498 # we execute the config step to be sure to catch updated Kconfig files
499 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
500 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
501 @# If the following part fails, include/config/auto.conf should be
502 @# deleted so "make silentoldconfig" will be re-run on the next build.
503 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf || \
504 { rm -f include/config/auto.conf; false; }
505 @# include/config.h has been updated after "make silentoldconfig".
506 @# We need to touch include/config/auto.conf so it gets newer
507 @# than include/config.h.
508 @# Otherwise, 'make silentoldconfig' would be invoked twice.
509 $(Q)touch include/config/auto.conf
511 -include include/autoconf.mk
512 -include include/autoconf.mk.dep
514 # We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf
515 # is up-to-date. When we switch to a different board configuration, old CONFIG
516 # macros are still remaining in include/config/auto.conf. Without the following
517 # gimmick, wrong config.mk would be included leading nasty warnings/errors.
518 ifneq ($(wildcard $(KCONFIG_CONFIG)),)
519 ifneq ($(wildcard include/config/auto.conf),)
520 autoconf_is_old := $(shell find . -path ./$(KCONFIG_CONFIG) -newer \
521 include/config/auto.conf)
522 ifeq ($(autoconf_is_old),)
524 include arch/$(ARCH)/Makefile
529 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
530 # that (or fail if absent). Otherwise, search for a linker script in a
534 #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
535 ifdef CONFIG_SYS_LDSCRIPT
536 # need to strip off double quotes
537 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
541 # If there is no specified link script, we look in a number of places for it
543 ifeq ($(wildcard $(LDSCRIPT)),)
544 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
546 ifeq ($(wildcard $(LDSCRIPT)),)
547 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
549 ifeq ($(wildcard $(LDSCRIPT)),)
550 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
555 # Dummy target needed, because used as prerequisite
556 include/config/auto.conf: ;
557 endif # $(dot-config)
559 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
565 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
566 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks)
569 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
570 # option to the assembler.
573 # Report stack usage if supported
574 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
575 KBUILD_CFLAGS += -fstack-usage
578 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
580 # turn jbsr into jsr for m68k
582 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
583 KBUILD_AFLAGS += -Wa,-gstabs,-S
587 # Prohibit date/time macros, which would make the build non-deterministic
588 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
590 include scripts/Makefile.extrawarn
592 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
593 KBUILD_CPPFLAGS += $(KCPPFLAGS)
594 KBUILD_AFLAGS += $(KAFLAGS)
595 KBUILD_CFLAGS += $(KCFLAGS)
597 # Use UBOOTINCLUDE when you must reference the include/ directory.
598 # Needed to be compatible with the O= option
601 $(if $(KBUILD_SRC), -I$(srctree)/include) \
602 $(if $(CONFIG_SYS_THUMB_BUILD), $(if $(CONFIG_HAS_THUMB2),, \
603 -I$(srctree)/arch/$(ARCH)/thumb1/include),) \
604 -I$(srctree)/arch/$(ARCH)/include \
605 -include $(srctree)/include/linux/kconfig.h
607 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
608 CHECKFLAGS += $(NOSTDINC_FLAGS)
611 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
613 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
615 #########################################################################
616 # U-Boot objects....order is important (i.e. start must be first)
618 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
621 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
622 libs-$(CONFIG_OF_EMBED) += dts/
627 libs-y += drivers/dma/
628 libs-y += drivers/gpio/
629 libs-y += drivers/i2c/
630 libs-y += drivers/mmc/
631 libs-y += drivers/mtd/
632 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
633 libs-y += drivers/mtd/onenand/
634 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
635 libs-y += drivers/mtd/spi/
636 libs-y += drivers/net/
637 libs-y += drivers/net/phy/
638 libs-y += drivers/pci/
639 libs-y += drivers/power/ \
640 drivers/power/fuel_gauge/ \
642 drivers/power/pmic/ \
643 drivers/power/battery/ \
644 drivers/power/regulator/
645 libs-y += drivers/spi/
646 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
647 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
648 libs-$(CONFIG_ALTERA_SDRAM) += drivers/ddr/altera/
649 libs-y += drivers/serial/
650 libs-y += drivers/usb/dwc3/
651 libs-y += drivers/usb/common/
652 libs-y += drivers/usb/emul/
653 libs-y += drivers/usb/eth/
654 libs-y += drivers/usb/gadget/
655 libs-y += drivers/usb/gadget/udc/
656 libs-y += drivers/usb/host/
657 libs-y += drivers/usb/musb/
658 libs-y += drivers/usb/musb-new/
659 libs-y += drivers/usb/phy/
660 libs-y += drivers/usb/ulpi/
663 libs-$(CONFIG_API) += api/
664 libs-$(CONFIG_HAS_POST) += post/
667 libs-$(CONFIG_UT_ENV) += test/env/
669 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
671 libs-y := $(sort $(libs-y))
673 u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
675 u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
677 libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
679 u-boot-init := $(head-y)
680 u-boot-main := $(libs-y)
684 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
685 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
687 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
689 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
691 export PLATFORM_LIBGCC
693 # Special flags for CPP when processing the linker script.
694 # Pass the version down so we can handle backwards compatibility
697 -include $(srctree)/include/u-boot/u-boot.lds.h \
699 $(shell $(LD) --version | \
700 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
702 #########################################################################
703 #########################################################################
705 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
707 @actual=`wc -c $@ | awk '{print $$1}'`; \
708 limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
709 if test $$actual -gt $$limit; then \
710 echo "$@ exceeds file size limit:" >&2 ; \
711 echo " limit: $$limit bytes" >&2 ; \
712 echo " actual: $$actual bytes" >&2 ; \
713 echo " excess: $$((actual - limit)) bytes" >&2; \
720 # Statically apply RELA-style relocations (currently arm64 only)
721 ifneq ($(CONFIG_STATIC_RELA),)
722 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
724 start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
725 end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
726 tools/relocate-rela $(2) $(3) $$start $$end
731 # Always append ALL so that arch config.mk's can add custom ones
732 ALL-y += u-boot.srec u-boot.bin u-boot.sym System.map u-boot.cfg binary_size_check
734 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
735 ifeq ($(CONFIG_SPL_FSL_PBL),y)
736 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
738 ifneq ($(CONFIG_SECURE_BOOT), y)
739 # For Secure Boot The Image needs to be signed and Header must also
740 # be included. So The image has to be built explicitly
741 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
744 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
745 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
746 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
747 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb
748 ifeq ($(CONFIG_SPL_FRAMEWORK),y)
749 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
751 ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
752 ifneq ($(CONFIG_SPL_TARGET),)
753 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
755 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
756 ALL-$(CONFIG_EFI_APP) += u-boot-app.efi
757 ALL-$(CONFIG_EFI_STUB) += u-boot-payload.efi
759 ifneq ($(BUILD_ROM),)
760 ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
763 # enable combined SPL/u-boot/dtb rules for tegra
764 ifeq ($(CONFIG_TEGRA)$(CONFIG_SPL),yy)
765 ALL-y += u-boot-tegra.bin u-boot-nodtb-tegra.bin
766 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb-tegra.bin
769 # Add optional build target if defined in board/cpu/soc headers
770 ifneq ($(CONFIG_BUILD_TARGET),)
771 ALL-y += $(CONFIG_BUILD_TARGET:"%"=%)
774 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
775 ifneq ($(CONFIG_SYS_TEXT_BASE),)
776 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
779 # Normally we fill empty space with 0xff
780 quiet_cmd_objcopy = OBJCOPY $@
781 cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \
782 $(OBJCOPYFLAGS_$(@F)) $< $@
784 # Provide a version which does not do this, for use by EFI
785 quiet_cmd_zobjcopy = OBJCOPY $@
786 cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
788 quiet_cmd_efipayload = OBJCOPY $@
789 cmd_efipayload = $(OBJCOPY) -I binary -O $(EFIPAYLOAD_BFDTARGET) -B $(EFIPAYLOAD_BFDARCH) $< $@
791 quiet_cmd_mkimage = MKIMAGE $@
792 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
793 $(if $(KBUILD_VERBOSE:1=), >/dev/null)
795 quiet_cmd_cat = CAT $@
796 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
798 append = cat $(filter-out $< $(PHONY), $^) >> $@
800 quiet_cmd_pad_cat = CAT $@
801 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
804 ifeq ($(CONFIG_DM_I2C_COMPAT),y)
805 @echo "===================== WARNING ======================"
806 @echo "This board uses CONFIG_DM_I2C_COMPAT. Please remove"
807 @echo "(possibly in a subsequent patch in your series)"
808 @echo "before sending patches to the mailing list."
809 @echo "===================================================="
813 dtbs dts/dt.dtb: checkdtc u-boot
814 $(Q)$(MAKE) $(build)=dts dtbs
816 quiet_cmd_copy = COPY $@
819 ifeq ($(CONFIG_OF_SEPARATE),y)
820 u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE
821 $(call if_changed,cat)
823 u-boot.bin: u-boot-dtb.bin FORCE
824 $(call if_changed,copy)
826 u-boot.bin: u-boot-nodtb.bin FORCE
827 $(call if_changed,copy)
831 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
833 u-boot.dtb: dts/dt.dtb
836 OBJCOPYFLAGS_u-boot.hex := -O ihex
838 OBJCOPYFLAGS_u-boot.srec := -O srec
840 u-boot.hex u-boot.srec: u-boot FORCE
841 $(call if_changed,objcopy)
843 OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \
844 $(if $(CONFIG_X86_RESET_VECTOR),-R .start16 -R .resetvec)
846 binary_size_check: u-boot-nodtb.bin FORCE
847 @file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \
848 map_size=$(shell cat u-boot.map | \
849 awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
852 if [ "" != "$$map_size" ]; then \
853 if test $$map_size -ne $$file_size; then \
854 echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
855 echo " but u-boot-nodtb.bin shows $$file_size" >&2 ; \
860 u-boot-nodtb.bin: u-boot FORCE
861 $(call if_changed,objcopy)
862 $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
867 $(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS)
870 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
872 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
874 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
875 $(call if_changed,objcopy)
878 # U-Boot entry point, needed for booting of full-blown U-Boot
879 # from the SPL U-Boot version.
881 ifndef CONFIG_SYS_UBOOT_START
882 CONFIG_SYS_UBOOT_START := 0
885 # Create a file containing the configuration options the image was built with
886 quiet_cmd_cpp_cfg = CFG $@
887 cmd_cpp_cfg = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
888 -DDO_DEPS_ONLY -D__ASSEMBLY__ -x assembler-with-cpp -P -dM -E -o $@ $<
890 ifdef CONFIG_SPL_LOAD_FIT
891 MKIMAGEFLAGS_u-boot.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
892 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
893 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \
894 $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST)))
896 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
897 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
898 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
901 MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
903 MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
904 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
906 MKIMAGEFLAGS_u-boot-spl.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
907 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
909 MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
910 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
912 u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl: \
913 $(if $(CONFIG_SPL_LOAD_FIT),u-boot-nodtb.bin dts/dt.dtb,u-boot.bin) FORCE
914 $(call if_changed,mkimage)
916 u-boot-spl.kwb: u-boot.img spl/u-boot-spl.bin FORCE
917 $(call if_changed,mkimage)
919 u-boot.sha1: u-boot.bin
920 tools/ubsha1 u-boot.bin
923 $(OBJDUMP) -d $< > $@
925 u-boot.cfg: include/config.h FORCE
926 $(call if_changed,cpp_cfg)
929 SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
931 SPL_PAYLOAD := u-boot.bin
934 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
935 --pad-to=$(CONFIG_SPL_PAD_TO)
936 u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
937 $(call if_changed,pad_cat)
939 MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE)
941 lpc32xx-spl.img: spl/u-boot-spl.bin FORCE
942 $(call if_changed,mkimage)
944 OBJCOPYFLAGS_lpc32xx-boot-0.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
946 lpc32xx-boot-0.bin: lpc32xx-spl.img FORCE
947 $(call if_changed,objcopy)
949 OBJCOPYFLAGS_lpc32xx-boot-1.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
951 lpc32xx-boot-1.bin: lpc32xx-spl.img FORCE
952 $(call if_changed,objcopy)
954 lpc32xx-full.bin: lpc32xx-boot-0.bin lpc32xx-boot-1.bin u-boot.img FORCE
955 $(call if_changed,cat)
957 CLEAN_FILES += lpc32xx-*
959 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
960 --pad-to=$(CONFIG_TPL_PAD_TO)
961 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
962 $(call if_changed,pad_cat)
964 SPL: spl/u-boot-spl.bin FORCE
965 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
967 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
968 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
970 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
972 u-boot.ubl: u-boot-with-spl.bin FORCE
973 $(call if_changed,mkimage)
975 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
976 $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
977 -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
978 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
979 $(call if_changed,mkimage)
981 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
982 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
983 $(call if_changed,pad_cat)
985 u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
986 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
987 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
988 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
990 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
991 # Both images are created using mkimage (crc etc), so that the ROM
992 # bootloader can check its integrity. Padding needs to be done to the
993 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
994 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
995 # The resulting image containing both U-Boot images is called u-boot.spr
996 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
997 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
998 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
999 $(call if_changed,mkimage)
1001 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1003 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
1004 $(call if_changed,pad_cat)
1006 ifneq ($(CONFIG_ARCH_SOCFPGA),)
1007 quiet_cmd_socboot = SOCBOOT $@
1008 cmd_socboot = cat spl/u-boot-spl.sfp spl/u-boot-spl.sfp \
1009 spl/u-boot-spl.sfp spl/u-boot-spl.sfp \
1010 u-boot.img > $@ || rm -f $@
1011 u-boot-with-spl.sfp: spl/u-boot-spl.sfp u-boot.img FORCE
1012 $(call if_changed,socboot)
1015 # x86 uses a large ROM. We fill it with 0xff, put the 16-bit stuff (including
1016 # reset vector) at the top, Intel ME descriptor at the bottom, and U-Boot in
1018 ifneq ($(CONFIG_X86_RESET_VECTOR),)
1019 rom: u-boot.rom FORCE
1021 IFDTOOL=$(objtree)/tools/ifdtool
1022 IFDTOOL_FLAGS = -f 0:$(objtree)/u-boot.dtb
1023 IFDTOOL_FLAGS += -m 0x$(shell $(NM) u-boot |grep _dt_ucode_base_size |cut -d' ' -f1)
1024 IFDTOOL_FLAGS += -U $(CONFIG_SYS_TEXT_BASE):$(objtree)/u-boot-nodtb.bin
1025 IFDTOOL_FLAGS += -w $(CONFIG_SYS_X86_START16):$(objtree)/u-boot-x86-16bit.bin
1028 ifneq ($(CONFIG_HAVE_INTEL_ME),)
1029 IFDTOOL_ME_FLAGS = -D $(srctree)/board/$(BOARDDIR)/descriptor.bin
1030 IFDTOOL_ME_FLAGS += -i ME:$(srctree)/board/$(BOARDDIR)/me.bin
1033 ifneq ($(CONFIG_HAVE_MRC),)
1034 IFDTOOL_FLAGS += -w $(CONFIG_X86_MRC_ADDR):$(srctree)/board/$(BOARDDIR)/mrc.bin
1037 ifneq ($(CONFIG_HAVE_FSP),)
1038 IFDTOOL_FLAGS += -w $(CONFIG_FSP_ADDR):$(srctree)/board/$(BOARDDIR)/$(CONFIG_FSP_FILE)
1041 ifneq ($(CONFIG_HAVE_CMC),)
1042 IFDTOOL_FLAGS += -w $(CONFIG_CMC_ADDR):$(srctree)/board/$(BOARDDIR)/$(CONFIG_CMC_FILE)
1045 ifneq ($(CONFIG_HAVE_VGA_BIOS),)
1046 IFDTOOL_FLAGS += -w $(CONFIG_VGA_BIOS_ADDR):$(srctree)/board/$(BOARDDIR)/$(CONFIG_VGA_BIOS_FILE)
1049 ifneq ($(CONFIG_HAVE_REFCODE),)
1050 IFDTOOL_FLAGS += -w $(CONFIG_X86_REFCODE_ADDR):refcode.bin
1053 quiet_cmd_ifdtool = IFDTOOL $@
1054 cmd_ifdtool = $(IFDTOOL) -c -r $(CONFIG_ROM_SIZE) u-boot.tmp;
1055 ifneq ($(CONFIG_HAVE_INTEL_ME),)
1056 cmd_ifdtool += $(IFDTOOL) $(IFDTOOL_ME_FLAGS) u-boot.tmp;
1058 cmd_ifdtool += $(IFDTOOL) $(IFDTOOL_FLAGS) u-boot.tmp;
1059 cmd_ifdtool += mv u-boot.tmp $@
1061 refcode.bin: $(srctree)/board/$(BOARDDIR)/refcode.bin FORCE
1062 $(call if_changed,copy)
1064 quiet_cmd_ldr = LD $@
1065 cmd_ldr = $(LD) $(LDFLAGS_$(@F)) \
1066 $(filter-out FORCE,$^) -o $@
1068 u-boot.rom: u-boot-x86-16bit.bin u-boot.bin FORCE \
1069 $(if $(CONFIG_HAVE_REFCODE),refcode.bin)
1070 $(call if_changed,ifdtool)
1072 OBJCOPYFLAGS_u-boot-x86-16bit.bin := -O binary -j .start16 -j .resetvec
1073 u-boot-x86-16bit.bin: u-boot FORCE
1074 $(call if_changed,objcopy)
1077 ifneq ($(CONFIG_SUNXI),)
1078 OBJCOPYFLAGS_u-boot-sunxi-with-spl.bin = -I binary -O binary \
1079 --pad-to=$(CONFIG_SPL_PAD_TO) --gap-fill=0xff
1080 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img FORCE
1081 $(call if_changed,pad_cat)
1084 ifneq ($(CONFIG_TEGRA),)
1085 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1086 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot-nodtb.bin FORCE
1087 $(call if_changed,pad_cat)
1089 OBJCOPYFLAGS_u-boot-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1090 u-boot-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
1091 $(call if_changed,pad_cat)
1093 u-boot-dtb-tegra.bin: u-boot-tegra.bin FORCE
1094 $(call if_changed,copy)
1097 OBJCOPYFLAGS_u-boot-app.efi := $(OBJCOPYFLAGS_EFI)
1098 u-boot-app.efi: u-boot FORCE
1099 $(call if_changed,zobjcopy)
1101 u-boot.bin.o: u-boot.bin FORCE
1102 $(call if_changed,efipayload)
1104 u-boot-payload.lds: $(LDSCRIPT_EFI) FORCE
1105 $(call if_changed_dep,cpp_lds)
1107 # Rule to link the EFI payload which contains a stub and a U-Boot binary
1108 quiet_cmd_u-boot_payload ?= LD $@
1109 cmd_u-boot_payload ?= $(LD) $(LDFLAGS_EFI_PAYLOAD) -o $@ \
1110 -T u-boot-payload.lds arch/x86/cpu/call32.o \
1111 lib/efi/efi.o lib/efi/efi_stub.o u-boot.bin.o \
1112 $(addprefix arch/$(ARCH)/lib/efi/,$(EFISTUB))
1114 u-boot-payload: u-boot.bin.o u-boot-payload.lds FORCE
1115 $(call if_changed,u-boot_payload)
1117 OBJCOPYFLAGS_u-boot-payload.efi := $(OBJCOPYFLAGS_EFI)
1118 u-boot-payload.efi: u-boot-payload FORCE
1119 $(call if_changed,zobjcopy)
1121 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
1122 $(call if_changed,cat)
1124 #Add a target to create boot binary having SPL binary in PBI format
1125 #concatenated with u-boot binary. It is need by PowerPC SoC having
1126 #internal SRAM <= 512KB.
1127 MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1128 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \
1129 -A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE)
1131 spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
1132 $(call if_changed,mkimage)
1135 UBOOT_BINLOAD := u-boot.img
1137 UBOOT_BINLOAD := u-boot.bin
1140 OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1143 u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE
1144 $(call if_changed,pad_cat)
1146 # PPC4xx needs the SPL at the end of the image, since the reset vector
1147 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
1148 # and need to introduce a new build target with the full blown U-Boot
1149 # at the start padded up to the start of the SPL image. And then concat
1150 # the SPL image to the end.
1152 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
1153 --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
1154 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
1155 $(call if_changed,pad_cat)
1157 # Create a new ELF from a raw binary file. This is useful for arm64
1158 # where static relocation needs to be performed on the raw binary,
1159 # but certain simulators only accept an ELF file (but don't do the
1161 # FIXME refactor dts/Makefile to share target/arch detection
1162 u-boot.elf: u-boot.bin
1163 @$(OBJCOPY) -B aarch64 -I binary -O elf64-littleaarch64 \
1165 @$(LD) u-boot-elf.o -o $@ \
1166 --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
1167 -Ttext=$(CONFIG_SYS_TEXT_BASE)
1169 # Rule to link u-boot
1170 # May be overridden by arch/$(ARCH)/config.mk
1171 quiet_cmd_u-boot__ ?= LD $@
1172 cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
1173 -T u-boot.lds $(u-boot-init) \
1174 --start-group $(u-boot-main) --end-group \
1175 $(PLATFORM_LIBS) -Map u-boot.map
1177 quiet_cmd_smap = GEN common/system_map.o
1179 smap=`$(call SYSTEM_MAP,u-boot) | \
1180 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
1181 $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
1182 -c $(srctree)/common/system_map.c -o common/system_map.o
1184 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds FORCE
1185 $(call if_changed,u-boot__)
1186 ifeq ($(CONFIG_KALLSYMS),y)
1188 $(call cmd,u-boot__) common/system_map.o
1191 quiet_cmd_sym ?= SYM $@
1192 cmd_sym ?= $(OBJDUMP) -t $< > $@
1193 u-boot.sym: u-boot FORCE
1194 $(call if_changed,sym)
1196 # The actual objects are generated when descending,
1197 # make sure no implicit rule kicks in
1198 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
1200 # Handle descending into subdirectories listed in $(vmlinux-dirs)
1201 # Preset locale variables to speed up the build process. Limit locale
1202 # tweaks to this spot to avoid wrong language settings when running
1203 # make menuconfig etc.
1204 # Error messages still appears in the original language
1206 PHONY += $(u-boot-dirs)
1207 $(u-boot-dirs): prepare scripts
1208 $(Q)$(MAKE) $(build)=$@
1211 # The "tools" are needed early
1212 $(filter-out tools, $(u-boot-dirs)): tools
1213 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
1214 # is "yes"), so compile examples after U-Boot is compiled.
1215 examples: $(filter-out examples, $(u-boot-dirs))
1217 define filechk_uboot.release
1218 echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1221 # Store (new) UBOOTRELEASE string in include/config/uboot.release
1222 include/config/uboot.release: include/config/auto.conf FORCE
1223 $(call filechk,uboot.release)
1226 # Things we need to do before we recursively start building the kernel
1227 # or the modules are listed in "prepare".
1228 # A multi level approach is used. prepareN is processed before prepareN-1.
1229 # archprepare is used in arch Makefiles and when processed asm symlink,
1230 # version.h and scripts_basic is processed / created.
1232 # Listed in dependency order
1233 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1235 # prepare3 is used to check if we are building in a separate output directory,
1237 # 1) Check that make has not been executed in the kernel src $(srctree)
1238 prepare3: include/config/uboot.release
1239 ifneq ($(KBUILD_SRC),)
1240 @$(kecho) ' Using $(srctree) as source for U-Boot'
1241 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
1242 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
1243 echo >&2 " in the '$(srctree)' directory.";\
1248 # prepare2 creates a makefile if using a separate output directory
1249 prepare2: prepare3 outputmakefile
1251 prepare1: prepare2 $(version_h) $(timestamp_h) \
1252 include/config/auto.conf
1253 ifeq ($(wildcard $(LDSCRIPT)),)
1254 @echo >&2 " Could not find linker script."
1258 archprepare: prepare1 scripts_basic
1260 prepare0: archprepare FORCE
1261 $(Q)$(MAKE) $(build)=.
1263 # All the preparing..
1266 # Generate some files
1267 # ---------------------------------------------------------------------------
1269 define filechk_version.h
1270 (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1271 echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1272 echo \#define CC_VERSION_STRING \"$$($(CC) --version | head -n 1)\"; \
1273 echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; )
1276 # The SOURCE_DATE_EPOCH mechanism requires a date that behaves like GNU date.
1277 # The BSD date on the other hand behaves different and would produce errors
1278 # with the misused '-d' switch. Respect that and search a working date with
1279 # well known pre- and suffixes for the GNU variant of date.
1280 define filechk_timestamp.h
1281 (if test -n "$${SOURCE_DATE_EPOCH}"; then \
1282 SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \
1284 for date in gdate date.gnu date; do \
1285 $${date} -u -d "$${SOURCE_DATE}" >/dev/null 2>&1 && DATE="$${date}"; \
1287 if test -n "$${DATE}"; then \
1288 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DATE "%b %d %C%y"'; \
1289 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TIME "%T"'; \
1290 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TZ "%z"'; \
1291 LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1296 LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1297 LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \
1298 LC_ALL=C date +'#define U_BOOT_TZ "%z"'; \
1299 LC_ALL=C date +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1303 $(version_h): include/config/uboot.release FORCE
1304 $(call filechk,version.h)
1306 $(timestamp_h): $(srctree)/Makefile FORCE
1307 $(call filechk,timestamp.h)
1309 # ---------------------------------------------------------------------------
1310 quiet_cmd_cpp_lds = LDS $@
1311 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
1312 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
1314 u-boot.lds: $(LDSCRIPT) prepare FORCE
1315 $(call if_changed_dep,cpp_lds)
1317 spl/u-boot-spl.bin: spl/u-boot-spl
1319 spl/u-boot-spl: tools prepare $(if $(CONFIG_OF_SEPARATE),dts/dt.dtb)
1320 $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all
1322 spl/sunxi-spl.bin: spl/u-boot-spl
1325 spl/u-boot-spl.sfp: spl/u-boot-spl
1328 spl/boot.bin: spl/u-boot-spl
1331 tpl/u-boot-tpl.bin: tools prepare
1332 $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
1334 TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
1340 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1341 -name '*.[chS]' -print`
1345 etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1346 -name '*.[chS]' -print`
1348 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1354 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1357 @$(call SYSTEM_MAP,$<) > $@
1360 @if test $(call dtc-version) -lt 0104; then \
1361 echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
1365 #########################################################################
1367 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1368 # R_AARCH64_RELATIVE (64-bit).
1369 checkarmreloc: u-boot
1370 @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1371 grep R_A | sort -u`"; \
1372 if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1373 "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1374 echo "$< contains unexpected relocations: $$RELOC"; \
1379 $(Q)$(MAKE) $(build)=tools/$@
1381 tools-only: scripts_basic $(version_h) $(timestamp_h)
1382 $(Q)$(MAKE) $(build)=tools
1384 tools-all: export HOST_TOOLS_ALL=y
1385 tools-all: env tools ;
1387 cross_tools: export CROSS_BUILD_TOOLS=y
1388 cross_tools: tools ;
1392 git log --no-merges U-Boot-1_1_5.. | \
1393 unexpand -a | sed -e 's/\s\s*$$//' > $@
1395 #########################################################################
1398 # Cleaning is done on three levels.
1399 # make clean Delete most generated files
1400 # Leave enough to build external modules
1401 # make mrproper Delete the current configuration, and all generated files
1402 # make distclean Remove editor backup files, patch leftover files and the like
1404 # Directories & files removed with 'make clean'
1405 CLEAN_DIRS += $(MODVERDIR) \
1406 $(foreach d, spl tpl, $(patsubst %,$d/%, \
1407 $(filter-out include, $(shell ls -1 $d 2>/dev/null))))
1409 CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h include/license.h \
1410 boot* u-boot* MLO* SPL System.map
1412 # Directories & files removed with 'make mrproper'
1413 MRPROPER_DIRS += include/config include/generated spl tpl \
1415 MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \
1416 ctags etags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
1418 # clean - Delete most, but leave enough to build external modules
1420 clean: rm-dirs := $(CLEAN_DIRS)
1421 clean: rm-files := $(CLEAN_FILES)
1423 clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
1425 clean-dirs := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
1427 PHONY += $(clean-dirs) clean archclean
1429 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1431 # TODO: Do not use *.cfgtmp
1432 clean: $(clean-dirs)
1435 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1436 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1437 -o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
1438 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1439 -o -name '*.symtypes' -o -name 'modules.order' \
1440 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1441 -o -name 'dsdt.aml' -o -name 'dsdt.asl.tmp' -o -name 'dsdt.c' \
1442 -o -name '*.gcno' \) -type f -print | xargs rm -f
1444 # mrproper - Delete all generated files, including .config
1446 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1447 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1448 mrproper-dirs := $(addprefix _mrproper_,scripts)
1450 PHONY += $(mrproper-dirs) mrproper archmrproper
1452 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1454 mrproper: clean $(mrproper-dirs)
1457 @rm -f arch/*/include/asm/arch
1464 @find $(srctree) $(RCS_FIND_IGNORE) \
1465 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1466 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1467 -o -name '.*.rej' -o -name '*%' -o -name 'core' \
1468 -o -name '*.pyc' \) \
1469 -type f -print | xargs rm -f
1473 F=`basename $(srctree)` ; cd .. ; \
1474 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1477 @echo 'Cleaning targets:'
1478 @echo ' clean - Remove most generated files but keep the config'
1479 @echo ' mrproper - Remove all generated files + config + various backup files'
1480 @echo ' distclean - mrproper + remove editor backup and patch files'
1482 @echo 'Configuration targets:'
1483 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1485 @echo 'Other generic targets:'
1486 @echo ' all - Build all necessary images depending on configuration'
1487 @echo '* u-boot - Build the bare u-boot'
1488 @echo ' dir/ - Build all files in dir and below'
1489 @echo ' dir/file.[oisS] - Build specified target only'
1490 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1491 @echo ' (requires a recent binutils and recent build (System.map))'
1492 @echo ' tags/ctags - Generate ctags file for editors'
1493 @echo ' etags - Generate etags file for editors'
1494 @echo ' cscope - Generate cscope index'
1495 @echo ' ubootrelease - Output the release version string (use with make -s)'
1496 @echo ' ubootversion - Output the version stored in Makefile (use with make -s)'
1498 @echo 'Static analysers'
1499 @echo ' checkstack - Generate a list of stack hogs'
1501 @echo 'Documentation targets:'
1502 @$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
1504 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1505 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1506 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1507 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1508 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1509 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1510 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1511 @echo ' 1: warnings which may be relevant and do not occur too often'
1512 @echo ' 2: warnings which occur quite often but may still be relevant'
1513 @echo ' 3: more obscure warnings, can most likely be ignored'
1514 @echo ' Multiple levels can be combined with W=12 or W=123'
1516 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1517 @echo 'For further info see the ./README file'
1520 # Documentation targets
1521 # ---------------------------------------------------------------------------
1522 %docs: scripts_basic FORCE
1523 $(Q)$(MAKE) $(build)=scripts build_docproc
1524 $(Q)$(MAKE) $(build)=doc/DocBook $@
1527 PHONY += prepare scripts
1531 endif #ifeq ($(config-targets),1)
1532 endif #ifeq ($(mixed-targets),1)
1534 PHONY += checkstack ubootrelease ubootversion
1537 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1538 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1541 @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1544 @echo $(UBOOTVERSION)
1547 # ---------------------------------------------------------------------------
1548 # Single targets are compatible with:
1549 # - build with mixed source and output
1550 # - build with separate output dir 'make O=...'
1551 # - external modules
1553 # target-dir => where to store outputfile
1554 # build-dir => directory in kernel source tree to use
1556 ifeq ($(KBUILD_EXTMOD),)
1557 build-dir = $(patsubst %/,%,$(dir $@))
1558 target-dir = $(dir $@)
1560 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1561 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1562 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1565 %.s: %.c prepare scripts FORCE
1566 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1567 %.i: %.c prepare scripts FORCE
1568 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1569 %.o: %.c prepare scripts FORCE
1570 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1571 %.lst: %.c prepare scripts FORCE
1572 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1573 %.s: %.S prepare scripts FORCE
1574 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1575 %.o: %.S prepare scripts FORCE
1576 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1577 %.symtypes: %.c prepare scripts FORCE
1578 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1581 /: prepare scripts FORCE
1583 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1584 $(build)=$(build-dir)
1585 %/: prepare scripts FORCE
1587 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1588 $(build)=$(build-dir)
1589 %.ko: prepare scripts FORCE
1591 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1592 $(build)=$(build-dir) $(@:.ko=.o)
1593 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1595 # FIXME Should go into a make.lib or something
1596 # ===========================================================================
1598 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1599 cmd_rmdirs = rm -rf $(rm-dirs)
1601 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1602 cmd_rmfiles = rm -f $(rm-files)
1604 # read all saved command lines
1606 targets := $(wildcard $(sort $(targets)))
1607 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1609 ifneq ($(cmd_files),)
1610 $(cmd_files): ; # Do not try to update included dependency files
1611 include $(cmd_files)
1614 endif # skip-makefile
1619 # Declare the contents of the .PHONY variable as phony. We keep that
1620 # information in a variable so we can use it in if_changed and friends.