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 := $(O)
112 ifeq ("$(origin W)", "command line")
113 export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W)
116 # That's our default target when none is given on the command line
120 # Cancel implicit rules on top Makefile
121 $(CURDIR)/Makefile Makefile: ;
123 ifneq ($(KBUILD_OUTPUT),)
124 # Invoke a second make in the output directory, passing relevant variables
125 # check that the output directory actually exists
126 saved-output := $(KBUILD_OUTPUT)
127 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
128 $(if $(KBUILD_OUTPUT),, \
129 $(error output directory "$(saved-output)" does not exist))
131 PHONY += $(MAKECMDGOALS) sub-make
133 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
137 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
138 KBUILD_SRC=$(CURDIR) \
139 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
140 $(filter-out _all sub-make,$(MAKECMDGOALS))
142 # Leave processing to above invocation of make
144 endif # ifneq ($(KBUILD_OUTPUT),)
145 endif # ifeq ($(KBUILD_SRC),)
147 # We process the rest of the Makefile if this is the final invocation of make
148 ifeq ($(skip-makefile),)
150 # If building an external module we do not care about the all: rule
151 # but instead _all depend on modules
153 ifeq ($(KBUILD_EXTMOD),)
159 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
164 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
166 export srctree objtree VPATH
168 OBJTREE := $(objtree)
169 SPLTREE := $(OBJTREE)/spl
170 TPLTREE := $(OBJTREE)/tpl
171 SRCTREE := $(srctree)
173 export TOPDIR SRCTREE OBJTREE SPLTREE TPLTREE
175 MKCONFIG := $(SRCTREE)/mkconfig
178 # Make sure CDPATH settings don't interfere
181 #########################################################################
183 HOSTARCH := $(shell uname -m | \
185 -e s/sun4u/sparc64/ \
188 -e s/ppc64/powerpc/ \
190 -e s/macppc/powerpc/\
193 HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
194 sed -e 's/\(cygwin\).*/cygwin/')
196 export HOSTARCH HOSTOS
198 # Deal with colliding definitions from tcsh etc.
201 #########################################################################
203 # set default to nothing for native builds
204 ifeq ($(HOSTARCH),$(ARCH))
208 # SHELL used by kbuild
209 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
210 else if [ -x /bin/bash ]; then echo /bin/bash; \
211 else echo sh; fi ; fi)
214 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
216 ifeq ($(HOSTOS),cygwin)
220 # Mac OS X / Darwin's C preprocessor is Apple specific. It
221 # generates numerous errors and warnings. We want to bypass it
222 # and use GNU C's cpp. To do this we pass the -traditional-cpp
223 # option to the compiler. Note that the -traditional-cpp flag
224 # DOES NOT have the same semantics as GNU C's flag, all it does
225 # is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
227 # Apple's linker is similar, thanks to the new 2 stage linking
228 # multiple symbol definitions are treated as errors, hence the
229 # -multiply_defined suppress option to turn off this error.
231 ifeq ($(HOSTOS),darwin)
232 # get major and minor product version (e.g. '10' and '6' for Snow Leopard)
233 DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.')
234 DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.')
236 os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
237 $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
239 # Snow Leopards build environment has no longer restrictions as described above
240 HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc")
241 HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp")
242 HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
245 # Decide whether to build built-in, modular, or both.
246 # Normally, just do built-in.
251 # If we have only "make modules", don't compile built-in objects.
252 # When we're building modules with modversions, we need to consider
253 # the built-in objects during the descend as well, in order to
254 # make sure the checksums are up to date before we record them.
256 ifeq ($(MAKECMDGOALS),modules)
257 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
260 # If we have "make <whatever> modules", compile modules
261 # in addition to whatever we do anyway.
262 # Just "make" or "make all" shall build modules as well
264 # U-Boot does not need modules
265 #ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
266 # KBUILD_MODULES := 1
269 #ifeq ($(MAKECMDGOALS),)
270 # KBUILD_MODULES := 1
273 export KBUILD_MODULES KBUILD_BUILTIN
274 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
277 # ---------------------------------------------------------------------------
279 # Normally, we echo the whole command before executing it. By making
280 # that echo $($(quiet)$(cmd)), we now have the possibility to set
281 # $(quiet) to choose other forms of output instead, e.g.
283 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
284 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
286 # If $(quiet) is empty, the whole command will be printed.
287 # If it is set to "quiet_", only the short version will be printed.
288 # If it is set to "silent_", nothing will be printed at all, since
289 # the variable $(silent_cmd_cc_o_c) doesn't exist.
291 # A simple variant is to prefix commands with $(Q) - that's useful
292 # for commands that shall be hidden in non-verbose mode.
296 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
297 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
299 ifeq ($(KBUILD_VERBOSE),1)
307 # If the user is running make -s (silent mode), suppress echoing of
310 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
314 export quiet Q KBUILD_VERBOSE
317 # Look for make include files relative to root of kernel src
318 MAKEFLAGS += --include-dir=$(srctree)
320 # We need some generic definitions (do not try to remake the file).
321 $(srctree)/scripts/Kbuild.include: ;
322 include $(srctree)/scripts/Kbuild.include
324 # Make variables (CC, etc...)
326 AS = $(CROSS_COMPILE)as
328 ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
329 LD = $(CROSS_COMPILE)ld.bfd
331 LD = $(CROSS_COMPILE)ld
333 CC = $(CROSS_COMPILE)gcc
335 AR = $(CROSS_COMPILE)ar
336 NM = $(CROSS_COMPILE)nm
337 LDR = $(CROSS_COMPILE)ldr
338 STRIP = $(CROSS_COMPILE)strip
339 OBJCOPY = $(CROSS_COMPILE)objcopy
340 OBJDUMP = $(CROSS_COMPILE)objdump
342 RANLIB = $(CROSS_COMPILE)RANLIB
346 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
347 -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
349 KBUILD_CPPFLAGS := -D__KERNEL__
351 KBUILD_CFLAGS := -Wall -Wstrict-prototypes \
352 -Wno-format-security \
353 -fno-builtin -ffreestanding
354 KBUILD_AFLAGS := -D__ASSEMBLY__
356 # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
357 UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
358 UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
360 export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
361 export ARCH CPU BOARD VENDOR SOC
362 export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
363 export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
365 export DTC CHECK CHECKFLAGS
367 export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE
368 export KBUILD_CFLAGS KBUILD_AFLAGS
370 # When compiling out-of-tree modules, put MODVERDIR in the module
371 # tree rather than in the kernel tree. The kernel tree might
373 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
375 # Files to ignore in find ... statements
377 RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS \
378 -o -name .pc -o -name .hg -o -name .git \) -prune -o
379 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
380 --exclude CVS --exclude .pc --exclude .hg --exclude .git
382 # ===========================================================================
383 # Rules shared between *config targets and build targets
385 # Basic helpers built in scripts/
386 PHONY += scripts_basic
388 $(Q)$(MAKE) $(build)=scripts/basic
389 $(Q)rm -f .tmp_quiet_recordmcount
391 # To avoid any implicit rule to kick in, define an empty command.
392 scripts/basic/%: scripts_basic ;
394 PHONY += outputmakefile
395 # outputmakefile generates a Makefile in the output directory, if using a
396 # separate output directory. This allows convenient use of make in the
399 ifneq ($(KBUILD_SRC),)
400 $(Q)ln -fsn $(srctree) source
401 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
402 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
405 # To make sure we do not include .config for any of the *config targets
406 # catch them early, and hand them over to scripts/kconfig/Makefile
407 # It is allowed to specify more targets when calling make, including
408 # mixing *config targets and build targets.
409 # For example 'make oldconfig all'.
410 # Detect when mixed targets is specified, and make a second invocation
411 # of make so .config is not included in this case either (for *config).
413 version_h := include/generated/version_autogenerated.h
414 timestamp_h := include/generated/timestamp_autogenerated.h
416 no-dot-config-targets := clean clobber mrproper distclean \
417 help %docs check% coccicheck \
424 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
425 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
430 ifeq ($(KBUILD_EXTMOD),)
431 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
433 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
439 ifeq ($(mixed-targets),1)
440 # ===========================================================================
441 # We're called with mixed targets (*config and build targets).
442 # Handle them one by one.
444 PHONY += $(MAKECMDGOALS) build-one-by-one
446 $(MAKECMDGOALS): build-one-by-one
451 for i in $(MAKECMDGOALS); do \
452 $(MAKE) -f $(srctree)/Makefile $$i; \
456 ifeq ($(config-targets),1)
457 # ===========================================================================
458 # *config targets only - make sure prerequisites are updated, and descend
459 # in scripts/kconfig to make the *config target
461 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
462 # KBUILD_DEFCONFIG may point out an alternative default configuration
463 # used for 'make defconfig'
465 %_config:: outputmakefile
466 @$(MKCONFIG) -A $(@:_config=)
469 # ===========================================================================
470 # Build targets only - this includes vmlinux, arch specific targets, clean
471 # targets and others. In general all targets except *config targets.
473 # load ARCH, BOARD, and CPU configuration
474 -include include/config.mk
476 ifeq ($(dot-config),1)
478 -include include/autoconf.mk
479 -include include/autoconf.mk.dep
481 # load other configuration
482 include $(srctree)/config.mk
484 ifeq ($(wildcard include/config.mk),)
485 $(error "System not configured - see README")
488 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
489 # that (or fail if absent). Otherwise, search for a linker script in a
493 #LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
494 ifdef CONFIG_SYS_LDSCRIPT
495 # need to strip off double quotes
496 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
500 # If there is no specified link script, we look in a number of places for it
502 ifeq ($(CONFIG_NAND_U_BOOT),y)
503 LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
504 ifeq ($(wildcard $(LDSCRIPT)),)
505 LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot-nand.lds
508 ifeq ($(wildcard $(LDSCRIPT)),)
509 LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
511 ifeq ($(wildcard $(LDSCRIPT)),)
512 LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot.lds
514 ifeq ($(wildcard $(LDSCRIPT)),)
515 LDSCRIPT := $(TOPDIR)/arch/$(ARCH)/cpu/u-boot.lds
522 endif # $(dot-config)
524 KBUILD_CFLAGS += -Os #-fomit-frame-pointer
527 KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
530 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
533 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
534 # option to the assembler.
537 # Report stack usage if supported
538 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
539 KBUILD_CFLAGS += -fstack-usage
542 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
544 # turn jbsr into jsr for m68k
546 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
547 KBUILD_AFLAGS += -Wa,-gstabs,-S
551 ifneq ($(CONFIG_SYS_TEXT_BASE),)
552 KBUILD_CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
555 export CONFIG_SYS_TEXT_BASE
557 # Use UBOOTINCLUDE when you must reference the include/ directory.
558 # Needed to be compatible with the O= option
560 ifneq ($(OBJTREE),$(SRCTREE))
561 UBOOTINCLUDE += -I$(OBJTREE)/include
563 UBOOTINCLUDE += -I$(srctree)/include \
564 -I$(srctree)/arch/$(ARCH)/include
566 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
567 CHECKFLAGS += $(NOSTDINC_FLAGS)
570 cpp_flags := $(KBUILD_CPPFLAGS) $(CPPFLAGS) $(UBOOTINCLUDE) $(NOSTDINC_FLAGS)
571 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
573 #########################################################################
574 # U-Boot objects....order is important (i.e. start must be first)
576 head-y := $(CPUDIR)/start.o
577 head-$(CONFIG_4xx) += arch/powerpc/cpu/ppc4xx/resetvec.o
578 head-$(CONFIG_MPC85xx) += arch/powerpc/cpu/mpc85xx/resetvec.o
580 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
583 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
586 libs-y += $(CPUDIR)/$(SOC)/
588 libs-$(CONFIG_OF_EMBED) += dts/
589 libs-y += arch/$(ARCH)/lib/
594 libs-$(CONFIG_DM) += drivers/core/
595 libs-y += drivers/dma/
596 libs-y += drivers/gpio/
597 libs-y += drivers/i2c/
598 libs-y += drivers/input/
599 libs-y += drivers/mmc/
600 libs-y += drivers/mtd/
601 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
602 libs-y += drivers/mtd/onenand/
603 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
604 libs-y += drivers/mtd/spi/
605 libs-y += drivers/net/
606 libs-y += drivers/net/phy/
607 libs-y += drivers/pci/
608 libs-y += drivers/power/ \
609 drivers/power/fuel_gauge/ \
611 drivers/power/pmic/ \
612 drivers/power/battery/
613 libs-y += drivers/spi/
614 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
615 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
616 libs-y += drivers/serial/
617 libs-y += drivers/usb/eth/
618 libs-y += drivers/usb/gadget/
619 libs-y += drivers/usb/host/
620 libs-y += drivers/usb/musb/
621 libs-y += drivers/usb/musb-new/
622 libs-y += drivers/usb/phy/
623 libs-y += drivers/usb/ulpi/
625 libs-y += lib/libfdt/
626 libs-$(CONFIG_API) += api/
627 libs-$(CONFIG_HAS_POST) += post/
630 libs-$(CONFIG_DM_DEMO) += drivers/demo/
632 ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35 mxs vf610))
633 libs-y += arch/$(ARCH)/imx-common/
636 libs-$(CONFIG_ARM) += arch/arm/cpu/
637 libs-$(CONFIG_PPC) += arch/powerpc/cpu/
639 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
641 libs-y := $(sort $(libs-y))
643 u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
645 u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
647 libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
649 u-boot-init := $(head-y)
650 u-boot-main := $(libs-y)
654 ifdef USE_PRIVATE_LIBGCC
655 ifeq ("$(USE_PRIVATE_LIBGCC)", "yes")
656 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
658 PLATFORM_LIBGCC = -L $(USE_PRIVATE_LIBGCC) -lgcc
661 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
663 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
666 # Special flags for CPP when processing the linker script.
667 # Pass the version down so we can handle backwards compatibility
670 -include $(TOPDIR)/include/u-boot/u-boot.lds.h \
672 $(shell $(LD) --version | \
673 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
675 #########################################################################
676 #########################################################################
678 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
680 @actual=`wc -c $@ | awk '{print $$1}'`; \
681 limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
682 if test $$actual -gt $$limit; then \
683 echo "$@ exceeds file size limit:" >&2 ; \
684 echo " limit: $$limit bytes" >&2 ; \
685 echo " actual: $$actual bytes" >&2 ; \
686 echo " excess: $$((actual - limit)) bytes" >&2; \
693 # Statically apply RELA-style relocations (currently arm64 only)
694 ifneq ($(CONFIG_STATIC_RELA),)
695 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
697 start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
698 end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
699 tools/relocate-rela $(2) $(3) $$start $$end
704 # Always append ALL so that arch config.mk's can add custom ones
705 ALL-y += u-boot.srec u-boot.bin System.map
707 ALL-$(CONFIG_NAND_U_BOOT) += u-boot-nand.bin
708 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
709 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
710 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
711 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
712 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
713 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb u-boot-dtb.bin
714 ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
715 ifneq ($(CONFIG_SPL_TARGET),)
716 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
718 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
720 # enable combined SPL/u-boot/dtb rules for tegra
721 ifneq ($(CONFIG_TEGRA),)
722 ifeq ($(CONFIG_SPL),y)
723 ifeq ($(CONFIG_OF_SEPARATE),y)
724 ALL-y += u-boot-dtb-tegra.bin
726 ALL-y += u-boot-nodtb-tegra.bin
731 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
732 ifneq ($(CONFIG_SYS_TEXT_BASE),)
733 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
736 quiet_cmd_objcopy = OBJCOPY $@
737 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
739 quiet_cmd_mkimage = UIMAGE $@
740 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
741 $(if $(KBUILD_VERBOSE:1=), >/dev/null)
743 quiet_cmd_cat = CAT $@
744 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
746 append = cat $(filter-out $< $(PHONY), $^) >> $@
748 quiet_cmd_pad_cat = CAT $@
749 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
754 dtbs dts/dt.dtb: checkdtc u-boot
755 $(Q)$(MAKE) $(build)=dts dtbs
757 u-boot-dtb.bin: u-boot.bin dts/dt.dtb FORCE
758 $(call if_changed,cat)
760 quiet_cmd_copy = COPY $@
763 u-boot.dtb: dts/dt.dtb
766 OBJCOPYFLAGS_u-boot.hex := -O ihex
768 OBJCOPYFLAGS_u-boot.srec := -O srec
770 u-boot.hex u-boot.srec: u-boot FORCE
771 $(call if_changed,objcopy)
773 OBJCOPYFLAGS_u-boot.bin := -O binary
775 u-boot.bin: u-boot FORCE
776 $(call if_changed,objcopy)
777 $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
782 $(LDR) -T $(CONFIG_BFIN_CPU) -c $@ $< $(LDR_FLAGS)
785 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
787 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
789 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
790 $(call if_changed,objcopy)
793 # U-Boot entry point, needed for booting of full-blown U-Boot
794 # from the SPL U-Boot version.
796 ifndef CONFIG_SYS_UBOOT_START
797 CONFIG_SYS_UBOOT_START := 0
800 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
801 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
802 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
804 MKIMAGEFLAGS_u-boot.kwb = -n $(CONFIG_SYS_KWD_CONFIG) -T kwbimage \
805 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
807 MKIMAGEFLAGS_u-boot.pbl = -n $(CONFIG_SYS_FSL_PBL_RCW) \
808 -R $(CONFIG_SYS_FSL_PBL_PBI) -T pblimage
810 u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE
811 $(call if_changed,mkimage)
813 u-boot.imx: u-boot.bin
814 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
816 u-boot.sha1: u-boot.bin
817 tools/ubsha1 u-boot.bin
820 $(OBJDUMP) -d $< > $@
823 SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
825 SPL_PAYLOAD := u-boot.bin
828 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
829 --pad-to=$(CONFIG_SPL_PAD_TO)
830 u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
831 $(call if_changed,pad_cat)
833 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
834 --pad-to=$(CONFIG_TPL_PAD_TO)
835 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
836 $(call if_changed,pad_cat)
838 SPL: spl/u-boot-spl.bin FORCE
839 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
841 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
842 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
844 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
846 u-boot.ubl: u-boot-with-spl.bin FORCE
847 $(call if_changed,mkimage)
849 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
850 $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
851 -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
852 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
853 $(call if_changed,mkimage)
855 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_MAX_SIZE)
856 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
857 $(call if_changed,pad_cat)
859 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
860 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs $(objtree)/u-boot.sb
862 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
863 # Both images are created using mkimage (crc etc), so that the ROM
864 # bootloader can check its integrity. Padding needs to be done to the
865 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
866 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
867 # The resulting image containing both U-Boot images is called u-boot.spr
868 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
869 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
870 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
871 $(call if_changed,mkimage)
873 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
875 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
876 $(call if_changed,pad_cat)
878 ifneq ($(CONFIG_TEGRA),)
879 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
880 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
881 $(call if_changed,pad_cat)
883 ifeq ($(CONFIG_OF_SEPARATE),y)
884 u-boot-dtb-tegra.bin: u-boot-nodtb-tegra.bin dts/dt.dtb FORCE
885 $(call if_changed,cat)
889 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
890 $(call if_changed,cat)
892 # PPC4xx needs the SPL at the end of the image, since the reset vector
893 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
894 # and need to introduce a new build target with the full blown U-Boot
895 # at the start padded up to the start of the SPL image. And then concat
896 # the SPL image to the end.
898 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
899 --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
900 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
901 $(call if_changed,pad_cat)
903 # Create a new ELF from a raw binary file. This is useful for arm64
904 # where static relocation needs to be performed on the raw binary,
905 # but certain simulators only accept an ELF file (but don't do the
907 # FIXME refactor dts/Makefile to share target/arch detection
908 u-boot.elf: u-boot.bin
909 @$(OBJCOPY) -B aarch64 -I binary -O elf64-littleaarch64 \
911 @$(LD) u-boot-elf.o -o $@ \
912 --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
913 -Ttext=$(CONFIG_SYS_TEXT_BASE)
915 # Rule to link u-boot
916 # May be overridden by arch/$(ARCH)/config.mk
917 quiet_cmd_u-boot__ ?= LD $@
918 cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
919 -T u-boot.lds $(u-boot-init) \
920 --start-group $(u-boot-main) --end-group \
921 $(PLATFORM_LIBS) -Map u-boot.map
923 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds
924 $(call if_changed,u-boot__)
925 ifeq ($(CONFIG_KALLSYMS),y)
926 smap=`$(call SYSTEM_MAP,u-boot) | \
927 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
928 $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
929 -c $(srctree)/common/system_map.c -o common/system_map.o
930 $(call cmd,u-boot__) common/system_map.o
933 # The actual objects are generated when descending,
934 # make sure no implicit rule kicks in
935 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
937 # Handle descending into subdirectories listed in $(vmlinux-dirs)
938 # Preset locale variables to speed up the build process. Limit locale
939 # tweaks to this spot to avoid wrong language settings when running
940 # make menuconfig etc.
941 # Error messages still appears in the original language
943 PHONY += $(u-boot-dirs)
944 $(u-boot-dirs): prepare scripts
945 $(Q)$(MAKE) $(build)=$@
948 # The "tools" are needed early
949 $(filter-out tools, $(u-boot-dirs)): tools
950 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
951 # is "yes"), so compile examples after U-Boot is compiled.
952 examples: $(filter-out examples, $(u-boot-dirs))
954 define filechk_uboot.release
955 echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
958 # Store (new) UBOOTRELEASE string in include/config/uboot.release
959 include/config/uboot.release: Makefile FORCE
960 $(call filechk,uboot.release)
963 # Things we need to do before we recursively start building the kernel
964 # or the modules are listed in "prepare".
965 # A multi level approach is used. prepareN is processed before prepareN-1.
966 # archprepare is used in arch Makefiles and when processed asm symlink,
967 # version.h and scripts_basic is processed / created.
969 # Listed in dependency order
970 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
972 # prepare3 is used to check if we are building in a separate output directory,
974 # 1) Check that make has not been executed in the kernel src $(srctree)
975 prepare3: include/config/uboot.release
976 ifneq ($(KBUILD_SRC),)
977 @$(kecho) ' Using $(srctree) as source for u-boot'
978 $(Q)if [ -f $(srctree)/include/config.mk ]; then \
979 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
980 echo >&2 " in the '$(srctree)' directory.";\
985 # prepare2 creates a makefile if using a separate output directory
986 prepare2: prepare3 outputmakefile
988 prepare1: prepare2 $(version_h) $(timestamp_h)
989 ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
990 ifeq ($(CONFIG_SYS_GENERIC_BOARD),y)
991 @echo >&2 " Your architecture does not support generic board."
992 @echo >&2 " Please undefine CONFIG_SYS_GENERIC_BOARD in your board config file."
996 ifeq ($(wildcard $(LDSCRIPT)),)
997 @echo >&2 " Could not find linker script."
1001 archprepare: prepare1 scripts_basic
1003 prepare0: archprepare FORCE
1004 $(Q)$(MAKE) $(build)=.
1006 # All the preparing..
1009 # Generate some files
1010 # ---------------------------------------------------------------------------
1012 define filechk_version.h
1013 (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1014 echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1015 echo \#define CC_VERSION_STRING \"$$($(CC) --version | head -n 1)\"; \
1016 echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; )
1019 define filechk_timestamp.h
1020 (LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1021 LC_ALL=C date +'#define U_BOOT_TIME "%T"')
1024 $(version_h): $(srctree)/Makefile FORCE
1025 $(call filechk,version.h)
1027 $(timestamp_h): $(srctree)/Makefile FORCE
1028 $(call filechk,timestamp.h)
1031 # Auto-generate the autoconf.mk file (which is included by all makefiles)
1033 # This target actually generates 2 files; autoconf.mk and autoconf.mk.dep.
1034 # the dep file is only include in this top level makefile to determine when
1035 # to regenerate the autoconf.mk file.
1037 quiet_cmd_autoconf_dep = GEN $@
1038 cmd_autoconf_dep = $(CC) -x c -DDO_DEPS_ONLY -M $(c_flags) \
1039 -MQ include/autoconf.mk $(srctree)/include/common.h > $@ || rm $@
1041 include/autoconf.mk.dep: include/config.h include/common.h
1042 $(call cmd,autoconf_dep)
1044 quiet_cmd_autoconf = GEN $@
1046 $(CPP) $(c_flags) -DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && \
1047 sed -n -f $(srctree)/tools/scripts/define2mk.sed $@.tmp > $@; \
1050 include/autoconf.mk: include/config.h
1051 $(call cmd,autoconf)
1053 # ---------------------------------------------------------------------------
1057 @echo '*** Warning: make $@ is unnecessary now.'
1059 # ---------------------------------------------------------------------------
1060 quiet_cmd_cpp_lds = LDS $@
1061 cmd_cpp_lds = $(CPP) $(cpp_flags) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ \
1062 -x assembler-with-cpp -P -o $@ $<
1064 u-boot.lds: $(LDSCRIPT) prepare FORCE
1065 $(call if_changed,cpp_lds)
1069 $(Q)$(MAKE) $(build)=nand_spl/board/$(BOARDDIR) all
1071 @echo >&2 "==================== WARNING ====================="
1072 @echo >&2 "nand_spl will not be included in v2014.07 release."
1073 @echo >&2 "Please switch over to SPL."
1074 @echo >&2 "Otherwise, this board will be removed."
1075 @echo >&2 "=================================================="
1078 nand_spl/u-boot-spl-16k.bin: nand_spl
1081 u-boot-nand.bin: nand_spl/u-boot-spl-16k.bin u-boot.bin FORCE
1082 $(call if_changed,cat)
1084 spl/u-boot-spl.bin: spl/u-boot-spl
1086 spl/u-boot-spl: tools prepare
1087 $(Q)$(MAKE) obj=spl -f $(srctree)/spl/Makefile all
1089 tpl/u-boot-tpl.bin: tools prepare
1090 $(Q)$(MAKE) obj=tpl -f $(srctree)/spl/Makefile all CONFIG_TPL_BUILD=y
1092 TAG_SUBDIRS := $(u-boot-dirs) include
1098 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1099 -name '*.[chS]' -print`
1102 etags -a -o $(obj)etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1103 -name '*.[chS]' -print`
1105 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1111 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1114 @$(call SYSTEM_MAP,$<) > $@
1117 @if test $(call cc-version) -lt 0404; then \
1118 echo -n '*** Your GCC does not produce working '; \
1119 echo 'binaries in THUMB mode.'; \
1120 echo '*** Your board is configured for THUMB mode.'; \
1124 # GCC 3.x is reported to have problems generating the type of relocation
1125 # that U-Boot wants.
1126 # See http://lists.denx.de/pipermail/u-boot/2012-September/135156.html
1128 @if test $(call cc-version) -lt 0400; then \
1129 echo -n '*** Your GCC is too old, please upgrade to GCC 4.x or newer'; \
1134 @if test $(call dtc-version) -lt 0104; then \
1135 echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
1139 #########################################################################
1141 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1142 # R_AARCH64_RELATIVE (64-bit).
1143 checkarmreloc: u-boot
1144 @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1145 grep R_A | sort -u`"; \
1146 if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1147 "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1148 echo "$< contains unexpected relocations: $$RELOC"; \
1153 $(Q)$(MAKE) $(build)=tools/$@
1155 tools-all: export HOST_TOOLS_ALL=y
1156 tools-all: env tools ;
1158 cross_tools: export CROSS_BUILD_TOOLS=y
1159 cross_tools: tools ;
1163 git log --no-merges U-Boot-1_1_5.. | \
1164 unexpand -a | sed -e 's/\s\s*$$//' > $@
1166 include/license.h: tools/bin2header COPYING
1167 cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h
1168 #########################################################################
1171 # Cleaning is done on three levels.
1172 # make clean Delete most generated files
1173 # Leave enough to build external modules
1174 # make mrproper Delete the current configuration, and all generated files
1175 # make distclean Remove editor backup files, patch leftover files and the like
1177 # Directories & files removed with 'make clean'
1178 CLEAN_DIRS += $(MODVERDIR)
1179 CLEAN_FILES += u-boot.lds include/bmp_logo.h include/bmp_logo_data.h \
1180 include/autoconf.mk* include/spl-autoconf.mk \
1181 include/tpl-autoconf.mk
1183 # Directories & files removed with 'make clobber'
1184 CLOBBER_DIRS += $(patsubst %,spl/%, $(filter-out Makefile, \
1185 $(shell ls -1 spl 2>/dev/null))) \
1187 CLOBBER_FILES += u-boot* MLO* SPL System.map nand_spl/u-boot*
1189 # Directories & files removed with 'make mrproper'
1190 MRPROPER_DIRS += include/config include/generated
1191 MRPROPER_FILES += .config .config.old \
1192 tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1193 include/config.h include/config.mk
1195 # clean - Delete most, but leave enough to build external modules
1197 clean: rm-dirs := $(CLEAN_DIRS)
1198 clean: rm-files := $(CLEAN_FILES)
1200 clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $f/Makefile),$f))
1202 clean-dirs := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
1204 PHONY += $(clean-dirs) clean archclean
1206 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1208 # TODO: Do not use *.cfgtmp
1209 clean: $(clean-dirs)
1212 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1213 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1214 -o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
1215 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1216 -o -name '*.symtypes' -o -name 'modules.order' \
1217 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1218 -o -name '*.gcno' \) -type f -print | xargs rm -f
1219 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1220 -path './nand_spl/*' -type l -print | xargs rm -f
1224 clobber: rm-dirs := $(CLOBBER_DIRS)
1225 clobber: rm-files := $(CLOBBER_FILES)
1233 # mrproper - Delete all generated files, including .config
1235 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1236 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1237 mrproper-dirs := $(addprefix _mrproper_,scripts)
1239 PHONY += $(mrproper-dirs) mrproper archmrproper
1241 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1243 mrproper: clobber $(mrproper-dirs)
1246 @rm -f arch/*/include/asm/arch arch/*/include/asm/proc
1253 @find $(srctree) $(RCS_FIND_IGNORE) \
1254 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1255 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1257 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
1258 -type f -print | xargs rm -f
1261 F=`basename $(TOPDIR)` ; cd .. ; \
1262 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1265 @echo 'Cleaning targets:'
1266 @echo ' clean - Remove most generated files but keep the config and'
1267 @echo ' necessities for testing u-boot'
1268 @echo ' clobber - Remove most generated files but keep the config'
1269 @echo ' mrproper - Remove all generated files + config + various backup files'
1270 @echo ' distclean - mrproper + remove editor backup and patch files'
1272 # uncomment after adding Kconfig feature
1273 # @echo 'Configuration targets:'
1274 # @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1276 @echo 'Other generic targets:'
1277 @echo ' all - Build all necessary images depending on configuration'
1278 @echo ' u-boot - Build the bare u-boot'
1279 @echo ' dir/ - Build all files in dir and below'
1280 @echo ' dir/file.[oisS] - Build specified target only'
1281 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1282 @echo ' (requires a recent binutils and recent build (System.map))'
1283 @echo ' tags/TAGS - Generate tags file for editors'
1284 @echo ' cscope - Generate cscope index'
1285 @echo ' ubootrelease - Output the release version string'
1286 @echo ' ubootversion - Output the version stored in Makefile'
1288 @echo 'Static analysers'
1289 @echo ' checkstack - Generate a list of stack hogs'
1291 @echo 'Documentation targets:'
1292 @$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
1294 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1295 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1296 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1297 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1298 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1299 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1300 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1301 @echo ' 1: warnings which may be relevant and do not occur too often'
1302 @echo ' 2: warnings which occur quite often but may still be relevant'
1303 @echo ' 3: more obscure warnings, can most likely be ignored'
1304 @echo ' Multiple levels can be combined with W=12 or W=123'
1306 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1307 @echo 'For further info see the ./README file'
1310 # Documentation targets
1311 # ---------------------------------------------------------------------------
1312 %docs: scripts_basic FORCE
1313 $(Q)$(MAKE) $(build)=scripts build_docproc
1314 $(Q)$(MAKE) $(build)=doc/DocBook $@
1317 PHONY += prepare scripts
1321 endif #ifeq ($(config-targets),1)
1322 endif #ifeq ($(mixed-targets),1)
1324 PHONY += checkstack ubootrelease ubootversion
1327 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1328 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1331 @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1334 @echo $(UBOOTVERSION)
1337 # ---------------------------------------------------------------------------
1338 # Single targets are compatible with:
1339 # - build with mixed source and output
1340 # - build with separate output dir 'make O=...'
1341 # - external modules
1343 # target-dir => where to store outputfile
1344 # build-dir => directory in kernel source tree to use
1346 ifeq ($(KBUILD_EXTMOD),)
1347 build-dir = $(patsubst %/,%,$(dir $@))
1348 target-dir = $(dir $@)
1350 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1351 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1352 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1355 %.s: %.c prepare scripts FORCE
1356 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1357 %.i: %.c prepare scripts FORCE
1358 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1359 %.o: %.c prepare scripts FORCE
1360 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1361 %.lst: %.c prepare scripts FORCE
1362 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1363 %.s: %.S prepare scripts FORCE
1364 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1365 %.o: %.S prepare scripts FORCE
1366 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1367 %.symtypes: %.c prepare scripts FORCE
1368 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1371 /: prepare scripts FORCE
1373 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1374 $(build)=$(build-dir)
1375 %/: prepare scripts FORCE
1377 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1378 $(build)=$(build-dir)
1379 %.ko: prepare scripts FORCE
1381 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1382 $(build)=$(build-dir) $(@:.ko=.o)
1383 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1385 # FIXME Should go into a make.lib or something
1386 # ===========================================================================
1388 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1389 cmd_rmdirs = rm -rf $(rm-dirs)
1391 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1392 cmd_rmfiles = rm -f $(rm-files)
1394 # read all saved command lines
1396 targets := $(wildcard $(sort $(targets)))
1397 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1399 ifneq ($(cmd_files),)
1400 $(cmd_files): ; # Do not try to update included dependency files
1401 include $(cmd_files)
1404 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1406 # $(Q)$(MAKE) $(clean)=dir
1407 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1409 endif # skip-makefile
1414 # Declare the contents of the .PHONY variable as phony. We keep that
1415 # information in a variable so we can use it in if_changed and friends.