2 # (C) Copyright 2000-2013
3 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 # SPDX-License-Identifier: GPL-2.0+
15 # To see a list of typical targets execute "make help"
16 # More info can be located in ./README
17 # Comments in this file are targeted only to the developer, do not
18 # expect to learn how to build the kernel reading this file.
21 # o use make's built-in rules and variables
22 # (this increases performance and avoids hard-to-debug behaviour);
23 # o print "Entering directory ...";
24 MAKEFLAGS += -rR --no-print-directory
26 # Avoid funny character set dependencies
30 export LC_COLLATE LC_NUMERIC
32 # We are using a recursive build, so we need to do a little thinking
33 # to get the ordering right.
35 # Most importantly: sub-Makefiles should only ever modify files in
36 # their own directory. If in some directory we have a dependency on
37 # a file in another dir (which doesn't happen often, but it's often
38 # unavoidable when linking the built-in.o targets which finally
39 # turn into vmlinux), we will call a sub make in that other dir, and
40 # after that we are sure that everything which is in that other dir
43 # The only cases where we need to modify files which have global
44 # effects are thus separated out and done before the recursive
45 # descending is started. They are now explicitly listed as the
48 # To put more focus on warnings, be less verbose as default
49 # Use 'make V=1' to see the full commands
51 ifeq ("$(origin V)", "command line")
58 # Call a source code checker (by default, "sparse") as part of the
61 # Use 'make C=1' to enable checking of only re-compiled files.
62 # Use 'make C=2' to enable checking of *all* source files, regardless
63 # of whether they are re-compiled or not.
65 # See the file "Documentation/sparse.txt" for more details, including
66 # where to get the "sparse" utility.
68 ifeq ("$(origin C)", "command line")
69 KBUILD_CHECKSRC = $(C)
71 ifndef KBUILD_CHECKSRC
75 # Use make M=dir to specify directory of external module to build
76 # Old syntax make ... SUBDIRS=$PWD is still supported
77 # Setting the environment variable KBUILD_EXTMOD take precedence
79 KBUILD_EXTMOD ?= $(SUBDIRS)
82 ifeq ("$(origin M)", "command line")
86 # kbuild supports saving output files in a separate directory.
87 # To locate output files in a separate directory two syntaxes are supported.
88 # In both cases the working directory must be the root of the kernel src.
90 # Use "make O=dir/to/store/output/files/"
92 # 2) Set KBUILD_OUTPUT
93 # Set the environment variable KBUILD_OUTPUT to point to the directory
94 # where the output files shall be placed.
95 # export KBUILD_OUTPUT=dir/to/store/output/files/
98 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
102 # KBUILD_SRC is set on invocation of make in OBJ directory
103 # KBUILD_SRC is not intended to be used by the regular user (for now)
104 ifeq ($(KBUILD_SRC),)
106 # OK, Make called in directory where kernel src resides
107 # Do we want to locate output files in a separate directory?
108 ifeq ("$(origin O)", "command line")
109 KBUILD_OUTPUT := $(O)
112 # That's our default target when none is given on the command line
116 # Cancel implicit rules on top Makefile
117 $(CURDIR)/Makefile Makefile: ;
119 ifneq ($(KBUILD_OUTPUT),)
120 # Invoke a second make in the output directory, passing relevant variables
121 # check that the output directory actually exists
122 saved-output := $(KBUILD_OUTPUT)
123 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
125 $(if $(KBUILD_OUTPUT),, \
126 $(error failed to create output directory "$(saved-output)"))
128 PHONY += $(MAKECMDGOALS) sub-make
130 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
134 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
135 KBUILD_SRC=$(CURDIR) \
136 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
137 $(filter-out _all sub-make,$(MAKECMDGOALS))
139 # Leave processing to above invocation of make
141 endif # ifneq ($(KBUILD_OUTPUT),)
142 endif # ifeq ($(KBUILD_SRC),)
144 # We process the rest of the Makefile if this is the final invocation of make
145 ifeq ($(skip-makefile),)
147 # If building an external module we do not care about the all: rule
148 # but instead _all depend on modules
150 ifeq ($(KBUILD_EXTMOD),)
156 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
161 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
163 export srctree objtree VPATH
165 # Make sure CDPATH settings don't interfere
168 #########################################################################
170 HOSTARCH := $(shell uname -m | \
172 -e s/sun4u/sparc64/ \
175 -e s/ppc64/powerpc/ \
177 -e s/macppc/powerpc/\
180 HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
181 sed -e 's/\(cygwin\).*/cygwin/')
183 export HOSTARCH HOSTOS
185 #########################################################################
187 # set default to nothing for native builds
188 ifeq ($(HOSTARCH),$(ARCH))
192 KCONFIG_CONFIG ?= .config
193 export KCONFIG_CONFIG
195 # SHELL used by kbuild
196 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
197 else if [ -x /bin/bash ]; then echo /bin/bash; \
198 else echo sh; fi ; fi)
202 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
205 ifeq ($(HOSTOS),cygwin)
209 # Mac OS X / Darwin's C preprocessor is Apple specific. It
210 # generates numerous errors and warnings. We want to bypass it
211 # and use GNU C's cpp. To do this we pass the -traditional-cpp
212 # option to the compiler. Note that the -traditional-cpp flag
213 # DOES NOT have the same semantics as GNU C's flag, all it does
214 # is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
216 # Apple's linker is similar, thanks to the new 2 stage linking
217 # multiple symbol definitions are treated as errors, hence the
218 # -multiply_defined suppress option to turn off this error.
220 ifeq ($(HOSTOS),darwin)
221 # get major and minor product version (e.g. '10' and '6' for Snow Leopard)
222 DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.')
223 DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.')
225 os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
226 $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
228 # Snow Leopards build environment has no longer restrictions as described above
229 HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc")
230 HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp")
231 HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
234 # Decide whether to build built-in, modular, or both.
235 # Normally, just do built-in.
240 # If we have only "make modules", don't compile built-in objects.
241 # When we're building modules with modversions, we need to consider
242 # the built-in objects during the descend as well, in order to
243 # make sure the checksums are up to date before we record them.
245 ifeq ($(MAKECMDGOALS),modules)
246 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
249 # If we have "make <whatever> modules", compile modules
250 # in addition to whatever we do anyway.
251 # Just "make" or "make all" shall build modules as well
253 # U-Boot does not need modules
254 #ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
255 # KBUILD_MODULES := 1
258 #ifeq ($(MAKECMDGOALS),)
259 # KBUILD_MODULES := 1
262 export KBUILD_MODULES KBUILD_BUILTIN
263 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
266 # ---------------------------------------------------------------------------
268 # Normally, we echo the whole command before executing it. By making
269 # that echo $($(quiet)$(cmd)), we now have the possibility to set
270 # $(quiet) to choose other forms of output instead, e.g.
272 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
273 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
275 # If $(quiet) is empty, the whole command will be printed.
276 # If it is set to "quiet_", only the short version will be printed.
277 # If it is set to "silent_", nothing will be printed at all, since
278 # the variable $(silent_cmd_cc_o_c) doesn't exist.
280 # A simple variant is to prefix commands with $(Q) - that's useful
281 # for commands that shall be hidden in non-verbose mode.
285 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
286 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
288 ifeq ($(KBUILD_VERBOSE),1)
296 # If the user is running make -s (silent mode), suppress echoing of
299 ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4
300 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
304 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
309 export quiet Q KBUILD_VERBOSE
311 # Look for make include files relative to root of kernel src
312 MAKEFLAGS += --include-dir=$(srctree)
314 # We need some generic definitions (do not try to remake the file).
315 $(srctree)/scripts/Kbuild.include: ;
316 include $(srctree)/scripts/Kbuild.include
318 # Make variables (CC, etc...)
320 AS = $(CROSS_COMPILE)as
322 ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
323 LD = $(CROSS_COMPILE)ld.bfd
325 LD = $(CROSS_COMPILE)ld
327 CC = $(CROSS_COMPILE)gcc
329 AR = $(CROSS_COMPILE)ar
330 NM = $(CROSS_COMPILE)nm
331 LDR = $(CROSS_COMPILE)ldr
332 STRIP = $(CROSS_COMPILE)strip
333 OBJCOPY = $(CROSS_COMPILE)objcopy
334 OBJDUMP = $(CROSS_COMPILE)objdump
341 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
342 -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
344 KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__
346 KBUILD_CFLAGS := -Wall -Wstrict-prototypes \
347 -Wno-format-security \
348 -fno-builtin -ffreestanding
349 KBUILD_AFLAGS := -D__ASSEMBLY__
351 # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
352 UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
353 UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
355 export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
356 export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
357 export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
358 export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
359 export MAKE AWK PERL PYTHON
360 export HOSTCXX HOSTCXXFLAGS DTC CHECK CHECKFLAGS
362 export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
363 export KBUILD_CFLAGS KBUILD_AFLAGS
365 # When compiling out-of-tree modules, put MODVERDIR in the module
366 # tree rather than in the kernel tree. The kernel tree might
368 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
370 # Files to ignore in find ... statements
372 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
373 -name CVS -o -name .pc -o -name .hg -o -name .git \) \
375 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
376 --exclude CVS --exclude .pc --exclude .hg --exclude .git
378 # ===========================================================================
379 # Rules shared between *config targets and build targets
381 # Basic helpers built in scripts/
382 PHONY += scripts_basic
384 $(Q)$(MAKE) $(build)=scripts/basic
385 $(Q)rm -f .tmp_quiet_recordmcount
387 # To avoid any implicit rule to kick in, define an empty command.
388 scripts/basic/%: scripts_basic ;
390 PHONY += outputmakefile
391 # outputmakefile generates a Makefile in the output directory, if using a
392 # separate output directory. This allows convenient use of make in the
395 ifneq ($(KBUILD_SRC),)
396 $(Q)ln -fsn $(srctree) source
397 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
398 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
401 # To make sure we do not include .config for any of the *config targets
402 # catch them early, and hand them over to scripts/kconfig/Makefile
403 # It is allowed to specify more targets when calling make, including
404 # mixing *config targets and build targets.
405 # For example 'make oldconfig all'.
406 # Detect when mixed targets is specified, and make a second invocation
407 # of make so .config is not included in this case either (for *config).
409 version_h := include/generated/version_autogenerated.h
410 timestamp_h := include/generated/timestamp_autogenerated.h
412 no-dot-config-targets := clean clobber mrproper distclean \
413 help %docs check% coccicheck \
420 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
421 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
426 ifeq ($(KBUILD_EXTMOD),)
427 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
429 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
435 ifeq ($(mixed-targets),1)
436 # ===========================================================================
437 # We're called with mixed targets (*config and build targets).
438 # Handle them one by one.
440 PHONY += $(MAKECMDGOALS) __build_one_by_one
442 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
447 for i in $(MAKECMDGOALS); do \
448 $(MAKE) -f $(srctree)/Makefile $$i; \
452 ifeq ($(config-targets),1)
453 # ===========================================================================
454 # *config targets only - make sure prerequisites are updated, and descend
455 # in scripts/kconfig to make the *config target
457 KBUILD_DEFCONFIG := sandbox_defconfig
458 export KBUILD_DEFCONFIG KBUILD_KCONFIG
460 config: scripts_basic outputmakefile FORCE
461 +$(Q)$(CONFIG_SHELL) $(srctree)/scripts/multiconfig.sh $@
463 %config: scripts_basic outputmakefile FORCE
464 +$(Q)$(CONFIG_SHELL) $(srctree)/scripts/multiconfig.sh $@
467 # ===========================================================================
468 # Build targets only - this includes vmlinux, arch specific targets, clean
469 # targets and others. In general all targets except *config targets.
471 ifeq ($(dot-config),1)
473 -include include/config/auto.conf
475 # Read in dependencies to all Kconfig* files, make sure to run
476 # oldconfig if changes are detected.
477 -include include/config/auto.conf.cmd
479 # To avoid any implicit rule to kick in, define an empty command
480 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
482 # If .config is newer than include/config/auto.conf, someone tinkered
483 # with it and forgot to run make oldconfig.
484 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
485 # we execute the config step to be sure to catch updated Kconfig files
486 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
487 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
489 -include include/autoconf.mk
490 -include include/autoconf.mk.dep
492 # We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf
493 # is up-to-date. When we switch to a different board configuration, old CONFIG
494 # macros are still remaining in include/config/auto.conf. Without the following
495 # gimmick, wrong config.mk would be included leading nasty warnings/errors.
496 autoconf_is_current := $(if $(wildcard $(KCONFIG_CONFIG)),$(shell find . \
497 -path ./include/config/auto.conf -newer $(KCONFIG_CONFIG)))
498 ifneq ($(autoconf_is_current),)
499 include $(srctree)/config.mk
502 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
503 # that (or fail if absent). Otherwise, search for a linker script in a
507 #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
508 ifdef CONFIG_SYS_LDSCRIPT
509 # need to strip off double quotes
510 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
514 # If there is no specified link script, we look in a number of places for it
516 ifeq ($(wildcard $(LDSCRIPT)),)
517 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
519 ifeq ($(wildcard $(LDSCRIPT)),)
520 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
522 ifeq ($(wildcard $(LDSCRIPT)),)
523 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
528 # Dummy target needed, because used as prerequisite
529 include/config/auto.conf: ;
530 endif # $(dot-config)
532 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
539 KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
542 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
545 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
546 # option to the assembler.
549 # Report stack usage if supported
550 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
551 KBUILD_CFLAGS += -fstack-usage
554 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
556 # turn jbsr into jsr for m68k
558 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
559 KBUILD_AFLAGS += -Wa,-gstabs,-S
563 # Prohibit date/time macros, which would make the build non-deterministic
564 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
566 ifneq ($(CONFIG_SYS_TEXT_BASE),)
567 KBUILD_CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
570 export CONFIG_SYS_TEXT_BASE
572 include $(srctree)/scripts/Makefile.extrawarn
574 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
575 KBUILD_CPPFLAGS += $(KCPPFLAGS)
576 KBUILD_AFLAGS += $(KAFLAGS)
577 KBUILD_CFLAGS += $(KCFLAGS)
579 # Use UBOOTINCLUDE when you must reference the include/ directory.
580 # Needed to be compatible with the O= option
583 $(if $(KBUILD_SRC), -I$(srctree)/include) \
584 -I$(srctree)/arch/$(ARCH)/include \
585 -include $(srctree)/include/linux/kconfig.h
587 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
588 CHECKFLAGS += $(NOSTDINC_FLAGS)
591 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
593 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
595 #########################################################################
596 # U-Boot objects....order is important (i.e. start must be first)
598 head-y := $(CPUDIR)/start.o
599 head-$(CONFIG_4xx) += arch/powerpc/cpu/ppc4xx/resetvec.o
600 head-$(CONFIG_MPC85xx) += arch/powerpc/cpu/mpc85xx/resetvec.o
602 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
605 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
608 libs-y += $(CPUDIR)/$(SOC)/
610 libs-$(CONFIG_OF_EMBED) += dts/
611 libs-y += arch/$(ARCH)/lib/
616 libs-y += drivers/dma/
617 libs-y += drivers/gpio/
618 libs-y += drivers/i2c/
619 libs-y += drivers/mmc/
620 libs-y += drivers/mtd/
621 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
622 libs-y += drivers/mtd/onenand/
623 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
624 libs-y += drivers/mtd/spi/
625 libs-y += drivers/net/
626 libs-y += drivers/net/phy/
627 libs-y += drivers/pci/
628 libs-y += drivers/power/ \
629 drivers/power/fuel_gauge/ \
631 drivers/power/pmic/ \
632 drivers/power/battery/
633 libs-y += drivers/spi/
634 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
635 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
636 libs-y += drivers/serial/
637 libs-y += drivers/usb/eth/
638 libs-y += drivers/usb/gadget/
639 libs-y += drivers/usb/host/
640 libs-y += drivers/usb/musb/
641 libs-y += drivers/usb/musb-new/
642 libs-y += drivers/usb/phy/
643 libs-y += drivers/usb/ulpi/
645 libs-y += lib/libfdt/
646 libs-$(CONFIG_API) += api/
647 libs-$(CONFIG_HAS_POST) += post/
651 ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35 mxs vf610))
652 libs-y += arch/$(ARCH)/imx-common/
655 ifneq (,$(filter $(SOC), armada-xp kirkwood))
656 libs-y += arch/$(ARCH)/mvebu-common/
659 libs-$(CONFIG_ARM) += arch/arm/cpu/
660 libs-$(CONFIG_PPC) += arch/powerpc/cpu/
662 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
664 libs-y := $(sort $(libs-y))
666 u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
668 u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
670 libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
672 u-boot-init := $(head-y)
673 u-boot-main := $(libs-y)
677 ifdef CONFIG_USE_PRIVATE_LIBGCC
678 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
679 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
681 PLATFORM_LIBGCC = -L $(CONFIG_USE_PRIVATE_LIBGCC) -lgcc
684 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
686 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
688 export PLATFORM_LIBGCC
690 # Special flags for CPP when processing the linker script.
691 # Pass the version down so we can handle backwards compatibility
694 -include $(srctree)/include/u-boot/u-boot.lds.h \
696 $(shell $(LD) --version | \
697 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
699 #########################################################################
700 #########################################################################
702 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
704 @actual=`wc -c $@ | awk '{print $$1}'`; \
705 limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
706 if test $$actual -gt $$limit; then \
707 echo "$@ exceeds file size limit:" >&2 ; \
708 echo " limit: $$limit bytes" >&2 ; \
709 echo " actual: $$actual bytes" >&2 ; \
710 echo " excess: $$((actual - limit)) bytes" >&2; \
717 # Statically apply RELA-style relocations (currently arm64 only)
718 ifneq ($(CONFIG_STATIC_RELA),)
719 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
721 start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
722 end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
723 tools/relocate-rela $(2) $(3) $$start $$end
728 # Always append ALL so that arch config.mk's can add custom ones
729 ALL-y += u-boot.srec u-boot.bin System.map binary_size_check
731 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
732 ifeq ($(CONFIG_SPL_FSL_PBL),y)
733 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
735 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
737 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
738 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
739 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
740 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb u-boot-dtb.bin
741 ifeq ($(CONFIG_SPL_FRAMEWORK),y)
742 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
744 ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
745 ifneq ($(CONFIG_SPL_TARGET),)
746 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
748 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
750 # enable combined SPL/u-boot/dtb rules for tegra
751 ifneq ($(CONFIG_TEGRA),)
752 ifeq ($(CONFIG_SPL),y)
753 ifeq ($(CONFIG_OF_SEPARATE),y)
754 ALL-y += u-boot-dtb-tegra.bin
756 ALL-y += u-boot-nodtb-tegra.bin
761 # Add optional build target if defined in board/cpu/soc headers
762 ifneq ($(CONFIG_BUILD_TARGET),)
763 ALL-y += $(CONFIG_BUILD_TARGET:"%"=%)
766 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
767 ifneq ($(CONFIG_SYS_TEXT_BASE),)
768 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
771 quiet_cmd_objcopy = OBJCOPY $@
772 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
774 quiet_cmd_mkimage = MKIMAGE $@
775 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
776 $(if $(KBUILD_VERBOSE:1=), >/dev/null)
778 quiet_cmd_cat = CAT $@
779 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
781 append = cat $(filter-out $< $(PHONY), $^) >> $@
783 quiet_cmd_pad_cat = CAT $@
784 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
789 dtbs dts/dt.dtb: checkdtc u-boot
790 $(Q)$(MAKE) $(build)=dts dtbs
792 u-boot-dtb.bin: u-boot.bin dts/dt.dtb FORCE
793 $(call if_changed,cat)
796 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
798 quiet_cmd_copy = COPY $@
801 u-boot.dtb: dts/dt.dtb
804 OBJCOPYFLAGS_u-boot.hex := -O ihex
806 OBJCOPYFLAGS_u-boot.srec := -O srec
808 u-boot.hex u-boot.srec: u-boot FORCE
809 $(call if_changed,objcopy)
811 OBJCOPYFLAGS_u-boot.bin := -O binary
813 binary_size_check: u-boot.bin FORCE
814 @file_size=$(shell wc -c u-boot.bin | awk '{print $$1}') ; \
815 map_size=$(shell cat u-boot.map | \
816 awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
819 if [ "" != "$$map_size" ]; then \
820 if test $$map_size -ne $$file_size; then \
821 echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
822 echo " but u-boot.bin shows $$file_size" >&2 ; \
827 u-boot.bin: u-boot FORCE
828 $(call if_changed,objcopy)
829 $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
834 $(LDR) -T $(CONFIG_BFIN_CPU) -c $@ $< $(LDR_FLAGS)
837 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
839 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
841 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
842 $(call if_changed,objcopy)
845 # U-Boot entry point, needed for booting of full-blown U-Boot
846 # from the SPL U-Boot version.
848 ifndef CONFIG_SYS_UBOOT_START
849 CONFIG_SYS_UBOOT_START := 0
852 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
853 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
854 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
856 MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
857 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
859 MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
860 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
862 u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE
863 $(call if_changed,mkimage)
865 MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
867 u-boot-dtb.img: u-boot-dtb.bin FORCE
868 $(call if_changed,mkimage)
870 u-boot.sha1: u-boot.bin
871 tools/ubsha1 u-boot.bin
874 $(OBJDUMP) -d $< > $@
877 SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
879 SPL_PAYLOAD := u-boot.bin
882 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
883 --pad-to=$(CONFIG_SPL_PAD_TO)
884 u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
885 $(call if_changed,pad_cat)
887 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
888 --pad-to=$(CONFIG_TPL_PAD_TO)
889 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
890 $(call if_changed,pad_cat)
892 SPL: spl/u-boot-spl.bin FORCE
893 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
895 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
896 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
898 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
900 u-boot.ubl: u-boot-with-spl.bin FORCE
901 $(call if_changed,mkimage)
903 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
904 $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
905 -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
906 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
907 $(call if_changed,mkimage)
909 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
910 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
911 $(call if_changed,pad_cat)
913 u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
914 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
915 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
916 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
918 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
919 # Both images are created using mkimage (crc etc), so that the ROM
920 # bootloader can check its integrity. Padding needs to be done to the
921 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
922 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
923 # The resulting image containing both U-Boot images is called u-boot.spr
924 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
925 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
926 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
927 $(call if_changed,mkimage)
929 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
931 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
932 $(call if_changed,pad_cat)
934 MKIMAGEFLAGS_u-boot-spl.gph = -A $(ARCH) -T gpimage -C none \
935 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n SPL
936 spl/u-boot-spl.gph: spl/u-boot-spl.bin FORCE
937 $(call if_changed,mkimage)
939 OBJCOPYFLAGS_u-boot-spi.gph = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
941 u-boot-spi.gph: spl/u-boot-spl.gph u-boot.img FORCE
942 $(call if_changed,pad_cat)
944 MKIMAGEFLAGS_u-boot-nand.gph = -A $(ARCH) -T gpimage -C none \
945 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) -n U-Boot
946 u-boot-nand.gph: u-boot.bin FORCE
947 $(call if_changed,mkimage)
948 @dd if=/dev/zero bs=8 count=1 2>/dev/null >> $@
950 ifneq ($(CONFIG_SUNXI),)
951 OBJCOPYFLAGS_u-boot-sunxi-with-spl.bin = -I binary -O binary \
952 --pad-to=$(CONFIG_SPL_PAD_TO) --gap-fill=0xff
953 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img FORCE
954 $(call if_changed,pad_cat)
957 ifneq ($(CONFIG_TEGRA),)
958 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
959 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
960 $(call if_changed,pad_cat)
962 ifeq ($(CONFIG_OF_SEPARATE),y)
963 u-boot-dtb-tegra.bin: u-boot-nodtb-tegra.bin dts/dt.dtb FORCE
964 $(call if_changed,cat)
968 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
969 $(call if_changed,cat)
971 #Add a target to create boot binary having SPL binary in PBI format
972 #concatenated with u-boot binary. It is need by PowerPC SoC having
973 #internal SRAM <= 512KB.
974 MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
975 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
977 spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
978 $(call if_changed,mkimage)
980 OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
983 u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl u-boot.bin FORCE
984 $(call if_changed,pad_cat)
986 # PPC4xx needs the SPL at the end of the image, since the reset vector
987 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
988 # and need to introduce a new build target with the full blown U-Boot
989 # at the start padded up to the start of the SPL image. And then concat
990 # the SPL image to the end.
992 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
993 --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
994 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
995 $(call if_changed,pad_cat)
997 # Create a new ELF from a raw binary file. This is useful for arm64
998 # where static relocation needs to be performed on the raw binary,
999 # but certain simulators only accept an ELF file (but don't do the
1001 # FIXME refactor dts/Makefile to share target/arch detection
1002 u-boot.elf: u-boot.bin
1003 @$(OBJCOPY) -B aarch64 -I binary -O elf64-littleaarch64 \
1005 @$(LD) u-boot-elf.o -o $@ \
1006 --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
1007 -Ttext=$(CONFIG_SYS_TEXT_BASE)
1009 # Rule to link u-boot
1010 # May be overridden by arch/$(ARCH)/config.mk
1011 quiet_cmd_u-boot__ ?= LD $@
1012 cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
1013 -T u-boot.lds $(u-boot-init) \
1014 --start-group $(u-boot-main) --end-group \
1015 $(PLATFORM_LIBS) -Map u-boot.map
1017 quiet_cmd_smap = GEN common/system_map.o
1019 smap=`$(call SYSTEM_MAP,u-boot) | \
1020 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
1021 $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
1022 -c $(srctree)/common/system_map.c -o common/system_map.o
1024 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds
1025 $(call if_changed,u-boot__)
1026 ifeq ($(CONFIG_KALLSYMS),y)
1028 $(call cmd,u-boot__) common/system_map.o
1031 # The actual objects are generated when descending,
1032 # make sure no implicit rule kicks in
1033 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
1035 # Handle descending into subdirectories listed in $(vmlinux-dirs)
1036 # Preset locale variables to speed up the build process. Limit locale
1037 # tweaks to this spot to avoid wrong language settings when running
1038 # make menuconfig etc.
1039 # Error messages still appears in the original language
1041 PHONY += $(u-boot-dirs)
1042 $(u-boot-dirs): prepare scripts
1043 $(Q)$(MAKE) $(build)=$@
1046 # The "tools" are needed early
1047 $(filter-out tools, $(u-boot-dirs)): tools
1048 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
1049 # is "yes"), so compile examples after U-Boot is compiled.
1050 examples: $(filter-out examples, $(u-boot-dirs))
1052 define filechk_uboot.release
1053 echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1056 # Store (new) UBOOTRELEASE string in include/config/uboot.release
1057 include/config/uboot.release: include/config/auto.conf FORCE
1058 $(call filechk,uboot.release)
1061 # Things we need to do before we recursively start building the kernel
1062 # or the modules are listed in "prepare".
1063 # A multi level approach is used. prepareN is processed before prepareN-1.
1064 # archprepare is used in arch Makefiles and when processed asm symlink,
1065 # version.h and scripts_basic is processed / created.
1067 # Listed in dependency order
1068 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1070 # prepare3 is used to check if we are building in a separate output directory,
1072 # 1) Check that make has not been executed in the kernel src $(srctree)
1073 prepare3: include/config/uboot.release
1074 ifneq ($(KBUILD_SRC),)
1075 @$(kecho) ' Using $(srctree) as source for U-Boot'
1076 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
1077 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
1078 echo >&2 " in the '$(srctree)' directory.";\
1083 # prepare2 creates a makefile if using a separate output directory
1084 prepare2: prepare3 outputmakefile
1086 prepare1: prepare2 $(version_h) $(timestamp_h) \
1087 include/config/auto.conf
1088 ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
1089 ifeq ($(CONFIG_SYS_GENERIC_BOARD),y)
1090 @echo >&2 " Your architecture does not support generic board."
1091 @echo >&2 " Please undefine CONFIG_SYS_GENERIC_BOARD in your board config file."
1095 ifeq ($(wildcard $(LDSCRIPT)),)
1096 @echo >&2 " Could not find linker script."
1100 archprepare: prepare1 scripts_basic
1102 prepare0: archprepare FORCE
1103 $(Q)$(MAKE) $(build)=.
1105 # All the preparing..
1108 # Generate some files
1109 # ---------------------------------------------------------------------------
1111 define filechk_version.h
1112 (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1113 echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1114 echo \#define CC_VERSION_STRING \"$$($(CC) --version | head -n 1)\"; \
1115 echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; )
1118 define filechk_timestamp.h
1119 (LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1120 LC_ALL=C date +'#define U_BOOT_TIME "%T"')
1123 $(version_h): include/config/uboot.release FORCE
1124 $(call filechk,version.h)
1126 $(timestamp_h): $(srctree)/Makefile FORCE
1127 $(call filechk,timestamp.h)
1129 # ---------------------------------------------------------------------------
1133 @echo '*** Warning: make $@ is unnecessary now.'
1135 # ---------------------------------------------------------------------------
1136 quiet_cmd_cpp_lds = LDS $@
1137 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
1138 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
1140 u-boot.lds: $(LDSCRIPT) prepare FORCE
1141 $(call if_changed_dep,cpp_lds)
1143 spl/u-boot-spl.bin: spl/u-boot-spl
1145 spl/u-boot-spl: tools prepare
1146 $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all
1148 spl/sunxi-spl.bin: spl/u-boot-spl
1151 tpl/u-boot-tpl.bin: tools prepare
1152 $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
1154 TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
1160 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1161 -name '*.[chS]' -print`
1164 etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1165 -name '*.[chS]' -print`
1167 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1173 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1176 @$(call SYSTEM_MAP,$<) > $@
1179 @if test $(call dtc-version) -lt 0104; then \
1180 echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
1184 #########################################################################
1186 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1187 # R_AARCH64_RELATIVE (64-bit).
1188 checkarmreloc: u-boot
1189 @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1190 grep R_A | sort -u`"; \
1191 if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1192 "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1193 echo "$< contains unexpected relocations: $$RELOC"; \
1198 $(Q)$(MAKE) $(build)=tools/$@
1200 tools-only: scripts_basic $(version_h) $(timestamp_h)
1201 $(Q)$(MAKE) $(build)=tools
1203 tools-all: export HOST_TOOLS_ALL=y
1204 tools-all: env tools ;
1206 cross_tools: export CROSS_BUILD_TOOLS=y
1207 cross_tools: tools ;
1211 git log --no-merges U-Boot-1_1_5.. | \
1212 unexpand -a | sed -e 's/\s\s*$$//' > $@
1214 include/license.h: tools/bin2header COPYING
1215 cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h
1216 #########################################################################
1219 # Cleaning is done on three levels.
1220 # make clean Delete most generated files
1221 # Leave enough to build external modules
1222 # make mrproper Delete the current configuration, and all generated files
1223 # make distclean Remove editor backup files, patch leftover files and the like
1225 # Directories & files removed with 'make clean'
1226 CLEAN_DIRS += $(MODVERDIR)
1227 CLEAN_FILES += u-boot.lds include/bmp_logo.h include/bmp_logo_data.h
1229 # Directories & files removed with 'make clobber'
1230 CLOBBER_DIRS += $(foreach d, spl tpl, $(patsubst %,$d/%, \
1231 $(filter-out include, $(shell ls -1 $d 2>/dev/null))))
1232 CLOBBER_FILES += u-boot* MLO* SPL System.map
1234 # Directories & files removed with 'make mrproper'
1235 MRPROPER_DIRS += include/config include/generated spl tpl \
1237 MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \
1238 ctags etags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
1240 # clean - Delete most, but leave enough to build external modules
1242 clean: rm-dirs := $(CLEAN_DIRS)
1243 clean: rm-files := $(CLEAN_FILES)
1245 clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
1247 clean-dirs := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
1249 PHONY += $(clean-dirs) clean archclean
1251 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1253 # TODO: Do not use *.cfgtmp
1254 clean: $(clean-dirs)
1257 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1258 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1259 -o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
1260 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1261 -o -name '*.symtypes' -o -name 'modules.order' \
1262 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1263 -o -name '*.gcno' \) -type f -print | xargs rm -f
1267 clobber: rm-dirs := $(CLOBBER_DIRS)
1268 clobber: rm-files := $(CLOBBER_FILES)
1276 # mrproper - Delete all generated files, including .config
1278 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1279 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1280 mrproper-dirs := $(addprefix _mrproper_,scripts)
1282 PHONY += $(mrproper-dirs) mrproper archmrproper
1284 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1286 mrproper: clobber $(mrproper-dirs)
1289 @rm -f arch/*/include/asm/arch
1296 @find $(srctree) $(RCS_FIND_IGNORE) \
1297 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1298 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1299 -o -name '.*.rej' -o -name '*%' -o -name 'core' \
1300 -o -name '*.pyc' \) \
1301 -type f -print | xargs rm -f
1305 F=`basename $(srctree)` ; cd .. ; \
1306 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1309 @echo 'Cleaning targets:'
1310 @echo ' clean - Remove most generated files but keep the config and'
1311 @echo ' necessities for testing u-boot'
1312 @echo ' clobber - Remove most generated files but keep the config'
1313 @echo ' mrproper - Remove all generated files + config + various backup files'
1314 @echo ' distclean - mrproper + remove editor backup and patch files'
1316 @echo 'Configuration targets:'
1317 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1319 @echo 'Other generic targets:'
1320 @echo ' all - Build all necessary images depending on configuration'
1321 @echo ' u-boot - Build the bare u-boot'
1322 @echo ' dir/ - Build all files in dir and below'
1323 @echo ' dir/file.[oisS] - Build specified target only'
1324 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1325 @echo ' (requires a recent binutils and recent build (System.map))'
1326 @echo ' tags/ctags - Generate ctags file for editors'
1327 @echo ' etags - Generate etags file for editors'
1328 @echo ' cscope - Generate cscope index'
1329 @echo ' ubootrelease - Output the release version string'
1330 @echo ' ubootversion - Output the version stored in Makefile'
1332 @echo 'Static analysers'
1333 @echo ' checkstack - Generate a list of stack hogs'
1335 @echo 'Documentation targets:'
1336 @$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
1338 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1339 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1340 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1341 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1342 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1343 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1344 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1345 @echo ' 1: warnings which may be relevant and do not occur too often'
1346 @echo ' 2: warnings which occur quite often but may still be relevant'
1347 @echo ' 3: more obscure warnings, can most likely be ignored'
1348 @echo ' Multiple levels can be combined with W=12 or W=123'
1350 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1351 @echo 'For further info see the ./README file'
1354 # Documentation targets
1355 # ---------------------------------------------------------------------------
1356 %docs: scripts_basic FORCE
1357 $(Q)$(MAKE) $(build)=scripts build_docproc
1358 $(Q)$(MAKE) $(build)=doc/DocBook $@
1361 PHONY += prepare scripts
1365 endif #ifeq ($(config-targets),1)
1366 endif #ifeq ($(mixed-targets),1)
1368 PHONY += checkstack ubootrelease ubootversion
1371 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1372 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1375 @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1378 @echo $(UBOOTVERSION)
1381 # ---------------------------------------------------------------------------
1382 # Single targets are compatible with:
1383 # - build with mixed source and output
1384 # - build with separate output dir 'make O=...'
1385 # - external modules
1387 # target-dir => where to store outputfile
1388 # build-dir => directory in kernel source tree to use
1390 ifeq ($(KBUILD_EXTMOD),)
1391 build-dir = $(patsubst %/,%,$(dir $@))
1392 target-dir = $(dir $@)
1394 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1395 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1396 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1399 %.s: %.c prepare scripts FORCE
1400 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1401 %.i: %.c prepare scripts FORCE
1402 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1403 %.o: %.c prepare scripts FORCE
1404 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1405 %.lst: %.c prepare scripts FORCE
1406 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1407 %.s: %.S prepare scripts FORCE
1408 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1409 %.o: %.S prepare scripts FORCE
1410 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1411 %.symtypes: %.c prepare scripts FORCE
1412 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1415 /: prepare scripts FORCE
1417 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1418 $(build)=$(build-dir)
1419 %/: prepare scripts FORCE
1421 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1422 $(build)=$(build-dir)
1423 %.ko: prepare scripts FORCE
1425 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1426 $(build)=$(build-dir) $(@:.ko=.o)
1427 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1429 # FIXME Should go into a make.lib or something
1430 # ===========================================================================
1432 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1433 cmd_rmdirs = rm -rf $(rm-dirs)
1435 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1436 cmd_rmfiles = rm -f $(rm-files)
1438 # read all saved command lines
1440 targets := $(wildcard $(sort $(targets)))
1441 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1443 ifneq ($(cmd_files),)
1444 $(cmd_files): ; # Do not try to update included dependency files
1445 include $(cmd_files)
1448 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1450 # $(Q)$(MAKE) $(clean)=dir
1451 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1453 endif # skip-makefile
1458 # Declare the contents of the .PHONY variable as phony. We keep that
1459 # information in a variable so we can use it in if_changed and friends.