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 mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
129 $(if $(KBUILD_OUTPUT),, \
130 $(error failed to create output directory "$(saved-output)"))
132 PHONY += $(MAKECMDGOALS) sub-make
134 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
138 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
139 KBUILD_SRC=$(CURDIR) \
140 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
141 $(filter-out _all sub-make,$(MAKECMDGOALS))
143 # Leave processing to above invocation of make
145 endif # ifneq ($(KBUILD_OUTPUT),)
146 endif # ifeq ($(KBUILD_SRC),)
148 # We process the rest of the Makefile if this is the final invocation of make
149 ifeq ($(skip-makefile),)
151 # If building an external module we do not care about the all: rule
152 # but instead _all depend on modules
154 ifeq ($(KBUILD_EXTMOD),)
160 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
165 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
167 export srctree objtree VPATH
169 MKCONFIG := $(srctree)/mkconfig
172 # Make sure CDPATH settings don't interfere
175 #########################################################################
177 HOSTARCH := $(shell uname -m | \
179 -e s/sun4u/sparc64/ \
182 -e s/ppc64/powerpc/ \
184 -e s/macppc/powerpc/\
187 HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
188 sed -e 's/\(cygwin\).*/cygwin/')
190 export HOSTARCH HOSTOS
192 # Deal with colliding definitions from tcsh etc.
195 #########################################################################
197 # set default to nothing for native builds
198 ifeq ($(HOSTARCH),$(ARCH))
202 # SHELL used by kbuild
203 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
204 else if [ -x /bin/bash ]; then echo /bin/bash; \
205 else echo sh; fi ; fi)
209 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
212 ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1)
213 HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \
214 -Wno-missing-field-initializers -fno-delete-null-pointer-checks
217 ifeq ($(HOSTOS),cygwin)
221 # Mac OS X / Darwin's C preprocessor is Apple specific. It
222 # generates numerous errors and warnings. We want to bypass it
223 # and use GNU C's cpp. To do this we pass the -traditional-cpp
224 # option to the compiler. Note that the -traditional-cpp flag
225 # DOES NOT have the same semantics as GNU C's flag, all it does
226 # is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
228 # Apple's linker is similar, thanks to the new 2 stage linking
229 # multiple symbol definitions are treated as errors, hence the
230 # -multiply_defined suppress option to turn off this error.
232 ifeq ($(HOSTOS),darwin)
233 # get major and minor product version (e.g. '10' and '6' for Snow Leopard)
234 DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.')
235 DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.')
237 os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
238 $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
240 # Snow Leopards build environment has no longer restrictions as described above
241 HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc")
242 HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp")
243 HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
246 # Decide whether to build built-in, modular, or both.
247 # Normally, just do built-in.
252 # If we have only "make modules", don't compile built-in objects.
253 # When we're building modules with modversions, we need to consider
254 # the built-in objects during the descend as well, in order to
255 # make sure the checksums are up to date before we record them.
257 ifeq ($(MAKECMDGOALS),modules)
258 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
261 # If we have "make <whatever> modules", compile modules
262 # in addition to whatever we do anyway.
263 # Just "make" or "make all" shall build modules as well
265 # U-Boot does not need modules
266 #ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
267 # KBUILD_MODULES := 1
270 #ifeq ($(MAKECMDGOALS),)
271 # KBUILD_MODULES := 1
274 export KBUILD_MODULES KBUILD_BUILTIN
275 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
278 # ---------------------------------------------------------------------------
280 # Normally, we echo the whole command before executing it. By making
281 # that echo $($(quiet)$(cmd)), we now have the possibility to set
282 # $(quiet) to choose other forms of output instead, e.g.
284 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
285 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
287 # If $(quiet) is empty, the whole command will be printed.
288 # If it is set to "quiet_", only the short version will be printed.
289 # If it is set to "silent_", nothing will be printed at all, since
290 # the variable $(silent_cmd_cc_o_c) doesn't exist.
292 # A simple variant is to prefix commands with $(Q) - that's useful
293 # for commands that shall be hidden in non-verbose mode.
297 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
298 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
300 ifeq ($(KBUILD_VERBOSE),1)
308 # If the user is running make -s (silent mode), suppress echoing of
311 ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4
312 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
316 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
321 export quiet Q KBUILD_VERBOSE
324 ifeq ($(shell $(CC) -v 2>&1 | grep -c "clang version"), 1)
332 # Look for make include files relative to root of kernel src
333 MAKEFLAGS += --include-dir=$(srctree)
335 # We need some generic definitions (do not try to remake the file).
336 $(srctree)/scripts/Kbuild.include: ;
337 include $(srctree)/scripts/Kbuild.include
339 # Make variables (CC, etc...)
341 AS = $(CROSS_COMPILE)as
343 ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
344 LD = $(CROSS_COMPILE)ld.bfd
346 LD = $(CROSS_COMPILE)ld
348 CC = $(CROSS_COMPILE)gcc
350 AR = $(CROSS_COMPILE)ar
351 NM = $(CROSS_COMPILE)nm
352 LDR = $(CROSS_COMPILE)ldr
353 STRIP = $(CROSS_COMPILE)strip
354 OBJCOPY = $(CROSS_COMPILE)objcopy
355 OBJDUMP = $(CROSS_COMPILE)objdump
357 RANLIB = $(CROSS_COMPILE)RANLIB
361 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
362 -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
364 KBUILD_CPPFLAGS := -D__KERNEL__
366 KBUILD_CFLAGS := -Wall -Wstrict-prototypes \
367 -Wno-format-security \
368 -fno-builtin -ffreestanding
369 KBUILD_AFLAGS := -D__ASSEMBLY__
371 # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
372 UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
373 UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
375 export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
376 export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
377 export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
378 export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
380 export DTC CHECK CHECKFLAGS
382 export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
383 export KBUILD_CFLAGS KBUILD_AFLAGS
385 # When compiling out-of-tree modules, put MODVERDIR in the module
386 # tree rather than in the kernel tree. The kernel tree might
388 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
390 # Files to ignore in find ... statements
392 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
393 -name CVS -o -name .pc -o -name .hg -o -name .git \) \
395 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
396 --exclude CVS --exclude .pc --exclude .hg --exclude .git
398 # ===========================================================================
399 # Rules shared between *config targets and build targets
401 # Basic helpers built in scripts/
402 PHONY += scripts_basic
404 $(Q)$(MAKE) $(build)=scripts/basic
405 $(Q)rm -f .tmp_quiet_recordmcount
407 # To avoid any implicit rule to kick in, define an empty command.
408 scripts/basic/%: scripts_basic ;
410 PHONY += outputmakefile
411 # outputmakefile generates a Makefile in the output directory, if using a
412 # separate output directory. This allows convenient use of make in the
415 ifneq ($(KBUILD_SRC),)
416 $(Q)ln -fsn $(srctree) source
417 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
418 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
421 # To make sure we do not include .config for any of the *config targets
422 # catch them early, and hand them over to scripts/kconfig/Makefile
423 # It is allowed to specify more targets when calling make, including
424 # mixing *config targets and build targets.
425 # For example 'make oldconfig all'.
426 # Detect when mixed targets is specified, and make a second invocation
427 # of make so .config is not included in this case either (for *config).
429 version_h := include/generated/version_autogenerated.h
430 timestamp_h := include/generated/timestamp_autogenerated.h
432 no-dot-config-targets := clean clobber mrproper distclean \
433 help %docs check% coccicheck \
434 ubootversion backup tools-only
440 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
441 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
446 ifeq ($(KBUILD_EXTMOD),)
447 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
449 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
455 ifeq ($(mixed-targets),1)
456 # ===========================================================================
457 # We're called with mixed targets (*config and build targets).
458 # Handle them one by one.
460 PHONY += $(MAKECMDGOALS) build-one-by-one
462 $(MAKECMDGOALS): build-one-by-one
467 for i in $(MAKECMDGOALS); do \
468 $(MAKE) -f $(srctree)/Makefile $$i; \
472 ifeq ($(config-targets),1)
473 # ===========================================================================
474 # *config targets only - make sure prerequisites are updated, and descend
475 # in scripts/kconfig to make the *config target
477 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
478 # KBUILD_DEFCONFIG may point out an alternative default configuration
479 # used for 'make defconfig'
481 %_config:: outputmakefile
482 @$(MKCONFIG) -A $(@:_config=)
485 # ===========================================================================
486 # Build targets only - this includes vmlinux, arch specific targets, clean
487 # targets and others. In general all targets except *config targets.
489 # load ARCH, BOARD, and CPU configuration
490 -include include/config.mk
492 ifeq ($(dot-config),1)
494 -include include/autoconf.mk
495 -include include/autoconf.mk.dep
497 # load other configuration
498 include $(srctree)/config.mk
500 ifeq ($(wildcard include/config.mk),)
501 $(error "System not configured - see README")
504 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
505 # that (or fail if absent). Otherwise, search for a linker script in a
509 #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
510 ifdef CONFIG_SYS_LDSCRIPT
511 # need to strip off double quotes
512 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
516 # If there is no specified link script, we look in a number of places for it
518 ifeq ($(CONFIG_NAND_U_BOOT),y)
519 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot-nand.lds
520 ifeq ($(wildcard $(LDSCRIPT)),)
521 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot-nand.lds
524 ifeq ($(wildcard $(LDSCRIPT)),)
525 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
527 ifeq ($(wildcard $(LDSCRIPT)),)
528 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
530 ifeq ($(wildcard $(LDSCRIPT)),)
531 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
538 endif # $(dot-config)
540 KBUILD_CFLAGS += -Os #-fomit-frame-pointer
543 KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
546 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
548 ifeq ($(COMPILER),clang)
549 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
550 KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,)
551 KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable)
552 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
553 KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
554 # Quiet clang warning: comparison of unsigned expression < 0 is always false
555 KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
556 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the
557 # source of a reference will be _MergedGlobals and not on of the whitelisted names.
558 # See modpost pattern 2
559 KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
563 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
564 # option to the assembler.
567 # Report stack usage if supported
568 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
569 KBUILD_CFLAGS += -fstack-usage
572 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
574 # turn jbsr into jsr for m68k
576 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
577 KBUILD_AFLAGS += -Wa,-gstabs,-S
581 # Prohibit date/time macros, which would make the build non-deterministic
582 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
584 ifneq ($(CONFIG_SYS_TEXT_BASE),)
585 KBUILD_CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
588 export CONFIG_SYS_TEXT_BASE
590 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
591 KBUILD_CPPFLAGS += $(KCPPFLAGS)
592 KBUILD_AFLAGS += $(KAFLAGS)
593 KBUILD_CFLAGS += $(KCFLAGS)
595 # Use UBOOTINCLUDE when you must reference the include/ directory.
596 # Needed to be compatible with the O= option
599 $(if $(KBUILD_SRC), -I$(srctree)/include) \
600 -I$(srctree)/arch/$(ARCH)/include
602 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
603 CHECKFLAGS += $(NOSTDINC_FLAGS)
606 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
608 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
610 #########################################################################
611 # U-Boot objects....order is important (i.e. start must be first)
613 head-y := $(CPUDIR)/start.o
614 head-$(CONFIG_4xx) += arch/powerpc/cpu/ppc4xx/resetvec.o
615 head-$(CONFIG_MPC85xx) += arch/powerpc/cpu/mpc85xx/resetvec.o
617 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
620 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
623 libs-y += $(CPUDIR)/$(SOC)/
625 libs-$(CONFIG_OF_EMBED) += dts/
626 libs-y += arch/$(ARCH)/lib/
631 libs-$(CONFIG_DM) += drivers/core/
632 libs-y += drivers/dma/
633 libs-y += drivers/gpio/
634 libs-y += drivers/i2c/
635 libs-y += drivers/input/
636 libs-y += drivers/mmc/
637 libs-y += drivers/mtd/
638 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
639 libs-y += drivers/mtd/onenand/
640 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
641 libs-y += drivers/mtd/spi/
642 libs-y += drivers/net/
643 libs-y += drivers/net/phy/
644 libs-y += drivers/pci/
645 libs-y += drivers/power/ \
646 drivers/power/fuel_gauge/ \
648 drivers/power/pmic/ \
649 drivers/power/battery/
650 libs-y += drivers/spi/
651 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
652 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
653 libs-y += drivers/serial/
654 libs-y += drivers/usb/eth/
655 libs-y += drivers/usb/gadget/
656 libs-y += drivers/usb/host/
657 libs-y += drivers/usb/musb/
658 libs-y += drivers/usb/musb-new/
659 libs-y += drivers/usb/phy/
660 libs-y += drivers/usb/ulpi/
662 libs-y += lib/libfdt/
663 libs-$(CONFIG_API) += api/
664 libs-$(CONFIG_HAS_POST) += post/
667 libs-$(CONFIG_DM_DEMO) += drivers/demo/
669 ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35 mxs vf610))
670 libs-y += arch/$(ARCH)/imx-common/
673 libs-$(CONFIG_ARM) += arch/arm/cpu/
674 libs-$(CONFIG_PPC) += arch/powerpc/cpu/
676 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
678 libs-y := $(sort $(libs-y))
680 u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
682 u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
684 libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
686 u-boot-init := $(head-y)
687 u-boot-main := $(libs-y)
691 ifdef CONFIG_USE_PRIVATE_LIBGCC
692 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
693 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
695 PLATFORM_LIBGCC = -L $(CONFIG_USE_PRIVATE_LIBGCC) -lgcc
698 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
700 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
702 export PLATFORM_LIBGCC
704 # Special flags for CPP when processing the linker script.
705 # Pass the version down so we can handle backwards compatibility
708 -include $(srctree)/include/u-boot/u-boot.lds.h \
710 $(shell $(LD) --version | \
711 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
713 #########################################################################
714 #########################################################################
716 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
718 @actual=`wc -c $@ | awk '{print $$1}'`; \
719 limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
720 if test $$actual -gt $$limit; then \
721 echo "$@ exceeds file size limit:" >&2 ; \
722 echo " limit: $$limit bytes" >&2 ; \
723 echo " actual: $$actual bytes" >&2 ; \
724 echo " excess: $$((actual - limit)) bytes" >&2; \
731 # Statically apply RELA-style relocations (currently arm64 only)
732 ifneq ($(CONFIG_STATIC_RELA),)
733 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
735 start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
736 end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
737 tools/relocate-rela $(2) $(3) $$start $$end
742 # Always append ALL so that arch config.mk's can add custom ones
743 ALL-y += u-boot.srec u-boot.bin System.map
745 ALL-$(CONFIG_NAND_U_BOOT) += u-boot-nand.bin
746 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
747 ifeq ($(CONFIG_SPL_FSL_PBL),y)
748 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
750 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
752 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
753 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
754 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
755 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb u-boot-dtb.bin
756 ifeq ($(CONFIG_SPL_FRAMEWORK),y)
757 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
759 ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
760 ifneq ($(CONFIG_SPL_TARGET),)
761 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
763 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
765 # enable combined SPL/u-boot/dtb rules for tegra
766 ifneq ($(CONFIG_TEGRA),)
767 ifeq ($(CONFIG_SPL),y)
768 ifeq ($(CONFIG_OF_SEPARATE),y)
769 ALL-y += u-boot-dtb-tegra.bin
771 ALL-y += u-boot-nodtb-tegra.bin
776 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
777 ifneq ($(CONFIG_SYS_TEXT_BASE),)
778 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
781 quiet_cmd_objcopy = OBJCOPY $@
782 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
784 quiet_cmd_mkimage = MKIMAGE $@
785 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
786 $(if $(KBUILD_VERBOSE:1=), >/dev/null)
788 quiet_cmd_cat = CAT $@
789 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
791 append = cat $(filter-out $< $(PHONY), $^) >> $@
793 quiet_cmd_pad_cat = CAT $@
794 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
799 dtbs dts/dt.dtb: checkdtc u-boot
800 $(Q)$(MAKE) $(build)=dts dtbs
802 u-boot-dtb.bin: u-boot.bin dts/dt.dtb FORCE
803 $(call if_changed,cat)
806 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
808 quiet_cmd_copy = COPY $@
811 u-boot.dtb: dts/dt.dtb
814 OBJCOPYFLAGS_u-boot.hex := -O ihex
816 OBJCOPYFLAGS_u-boot.srec := -O srec
818 u-boot.hex u-boot.srec: u-boot FORCE
819 $(call if_changed,objcopy)
821 OBJCOPYFLAGS_u-boot.bin := -O binary
823 u-boot.bin: u-boot FORCE
824 $(call if_changed,objcopy)
825 $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
830 $(LDR) -T $(CONFIG_BFIN_CPU) -c $@ $< $(LDR_FLAGS)
833 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
835 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
837 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
838 $(call if_changed,objcopy)
841 # U-Boot entry point, needed for booting of full-blown U-Boot
842 # from the SPL U-Boot version.
844 ifndef CONFIG_SYS_UBOOT_START
845 CONFIG_SYS_UBOOT_START := 0
848 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
849 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
850 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
852 MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
853 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
855 MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
856 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
858 u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE
859 $(call if_changed,mkimage)
861 MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
863 u-boot-dtb.img: u-boot-dtb.bin FORCE
864 $(call if_changed,mkimage)
866 u-boot.sha1: u-boot.bin
867 tools/ubsha1 u-boot.bin
870 $(OBJDUMP) -d $< > $@
873 SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
875 SPL_PAYLOAD := u-boot.bin
878 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
879 --pad-to=$(CONFIG_SPL_PAD_TO)
880 u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
881 $(call if_changed,pad_cat)
883 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
884 --pad-to=$(CONFIG_TPL_PAD_TO)
885 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
886 $(call if_changed,pad_cat)
888 SPL: spl/u-boot-spl.bin FORCE
889 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
891 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
892 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
894 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
896 u-boot.ubl: u-boot-with-spl.bin FORCE
897 $(call if_changed,mkimage)
899 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
900 $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
901 -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
902 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
903 $(call if_changed,mkimage)
905 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
906 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
907 $(call if_changed,pad_cat)
909 u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
910 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
911 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
912 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
914 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
915 # Both images are created using mkimage (crc etc), so that the ROM
916 # bootloader can check its integrity. Padding needs to be done to the
917 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
918 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
919 # The resulting image containing both U-Boot images is called u-boot.spr
920 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
921 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
922 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
923 $(call if_changed,mkimage)
925 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
927 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
928 $(call if_changed,pad_cat)
930 MKIMAGEFLAGS_u-boot-spl.gph = -A $(ARCH) -T gpimage -C none \
931 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n SPL
932 spl/u-boot-spl.gph: spl/u-boot-spl.bin FORCE
933 $(call if_changed,mkimage)
935 OBJCOPYFLAGS_u-boot-spi.gph = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
937 u-boot-spi.gph: spl/u-boot-spl.gph u-boot.img FORCE
938 $(call if_changed,pad_cat)
940 ifneq ($(CONFIG_SUNXI),)
941 OBJCOPYFLAGS_u-boot-sunxi-with-spl.bin = -I binary -O binary \
942 --pad-to=$(CONFIG_SPL_PAD_TO) --gap-fill=0xff
943 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img FORCE
944 $(call if_changed,pad_cat)
947 ifneq ($(CONFIG_TEGRA),)
948 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
949 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
950 $(call if_changed,pad_cat)
952 ifeq ($(CONFIG_OF_SEPARATE),y)
953 u-boot-dtb-tegra.bin: u-boot-nodtb-tegra.bin dts/dt.dtb FORCE
954 $(call if_changed,cat)
958 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
959 $(call if_changed,cat)
961 #Add a target to create boot binary having SPL binary in PBI format
962 #concatenated with u-boot binary. It is need by PowerPC SoC having
963 #internal SRAM <= 512KB.
964 MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
965 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
967 spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
968 $(call if_changed,mkimage)
970 OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
973 u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl u-boot.bin FORCE
974 $(call if_changed,pad_cat)
976 # PPC4xx needs the SPL at the end of the image, since the reset vector
977 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
978 # and need to introduce a new build target with the full blown U-Boot
979 # at the start padded up to the start of the SPL image. And then concat
980 # the SPL image to the end.
982 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
983 --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
984 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
985 $(call if_changed,pad_cat)
987 # Create a new ELF from a raw binary file. This is useful for arm64
988 # where static relocation needs to be performed on the raw binary,
989 # but certain simulators only accept an ELF file (but don't do the
991 # FIXME refactor dts/Makefile to share target/arch detection
992 u-boot.elf: u-boot.bin
993 @$(OBJCOPY) -B aarch64 -I binary -O elf64-littleaarch64 \
995 @$(LD) u-boot-elf.o -o $@ \
996 --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
997 -Ttext=$(CONFIG_SYS_TEXT_BASE)
999 # Rule to link u-boot
1000 # May be overridden by arch/$(ARCH)/config.mk
1001 quiet_cmd_u-boot__ ?= LD $@
1002 cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
1003 -T u-boot.lds $(u-boot-init) \
1004 --start-group $(u-boot-main) --end-group \
1005 $(PLATFORM_LIBS) -Map u-boot.map
1007 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds
1008 $(call if_changed,u-boot__)
1009 ifeq ($(CONFIG_KALLSYMS),y)
1010 smap=`$(call SYSTEM_MAP,u-boot) | \
1011 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
1012 $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
1013 -c $(srctree)/common/system_map.c -o common/system_map.o
1014 $(call cmd,u-boot__) common/system_map.o
1017 # The actual objects are generated when descending,
1018 # make sure no implicit rule kicks in
1019 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
1021 # Handle descending into subdirectories listed in $(vmlinux-dirs)
1022 # Preset locale variables to speed up the build process. Limit locale
1023 # tweaks to this spot to avoid wrong language settings when running
1024 # make menuconfig etc.
1025 # Error messages still appears in the original language
1027 PHONY += $(u-boot-dirs)
1028 $(u-boot-dirs): prepare scripts
1029 $(Q)$(MAKE) $(build)=$@
1032 # The "tools" are needed early
1033 $(filter-out tools, $(u-boot-dirs)): tools
1034 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
1035 # is "yes"), so compile examples after U-Boot is compiled.
1036 examples: $(filter-out examples, $(u-boot-dirs))
1038 define filechk_uboot.release
1039 echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1042 # Store (new) UBOOTRELEASE string in include/config/uboot.release
1043 include/config/uboot.release: Makefile FORCE
1044 $(call filechk,uboot.release)
1047 # Things we need to do before we recursively start building the kernel
1048 # or the modules are listed in "prepare".
1049 # A multi level approach is used. prepareN is processed before prepareN-1.
1050 # archprepare is used in arch Makefiles and when processed asm symlink,
1051 # version.h and scripts_basic is processed / created.
1053 # Listed in dependency order
1054 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1056 # prepare3 is used to check if we are building in a separate output directory,
1058 # 1) Check that make has not been executed in the kernel src $(srctree)
1059 prepare3: include/config/uboot.release
1060 ifneq ($(KBUILD_SRC),)
1061 @$(kecho) ' Using $(srctree) as source for u-boot'
1062 $(Q)if [ -f $(srctree)/include/config.mk ]; then \
1063 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
1064 echo >&2 " in the '$(srctree)' directory.";\
1069 # prepare2 creates a makefile if using a separate output directory
1070 prepare2: prepare3 outputmakefile
1072 prepare1: prepare2 $(version_h) $(timestamp_h)
1073 ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
1074 ifeq ($(CONFIG_SYS_GENERIC_BOARD),y)
1075 @echo >&2 " Your architecture does not support generic board."
1076 @echo >&2 " Please undefine CONFIG_SYS_GENERIC_BOARD in your board config file."
1080 ifeq ($(wildcard $(LDSCRIPT)),)
1081 @echo >&2 " Could not find linker script."
1085 archprepare: prepare1 scripts_basic
1087 prepare0: archprepare FORCE
1088 $(Q)$(MAKE) $(build)=.
1090 # All the preparing..
1093 # Generate some files
1094 # ---------------------------------------------------------------------------
1096 define filechk_version.h
1097 (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1098 echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1099 echo \#define CC_VERSION_STRING \"$$($(CC) --version | head -n 1)\"; \
1100 echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; )
1103 define filechk_timestamp.h
1104 (LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1105 LC_ALL=C date +'#define U_BOOT_TIME "%T"')
1108 $(version_h): include/config/uboot.release FORCE
1109 $(call filechk,version.h)
1111 $(timestamp_h): $(srctree)/Makefile FORCE
1112 $(call filechk,timestamp.h)
1115 # Auto-generate the autoconf.mk file (which is included by all makefiles)
1117 # This target actually generates 2 files; autoconf.mk and autoconf.mk.dep.
1118 # the dep file is only include in this top level makefile to determine when
1119 # to regenerate the autoconf.mk file.
1121 quiet_cmd_autoconf_dep = GEN $@
1122 cmd_autoconf_dep = $(CC) -x c -DDO_DEPS_ONLY -M $(c_flags) \
1123 -MQ include/autoconf.mk $(srctree)/include/common.h > $@ || rm $@
1125 include/autoconf.mk.dep: include/config.h include/common.h
1126 $(call cmd,autoconf_dep)
1128 quiet_cmd_autoconf = GEN $@
1130 $(CPP) $(c_flags) -DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && \
1131 sed -n -f $(srctree)/tools/scripts/define2mk.sed $@.tmp > $@; \
1134 include/autoconf.mk: include/config.h
1135 $(call cmd,autoconf)
1137 # ---------------------------------------------------------------------------
1141 @echo '*** Warning: make $@ is unnecessary now.'
1143 # ---------------------------------------------------------------------------
1144 quiet_cmd_cpp_lds = LDS $@
1145 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
1146 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
1148 u-boot.lds: $(LDSCRIPT) prepare FORCE
1149 $(call if_changed_dep,cpp_lds)
1153 $(Q)$(MAKE) $(build)=nand_spl/board/$(BOARDDIR) all
1155 @echo >&2 "==================== WARNING ====================="
1156 @echo >&2 "nand_spl will not be included in v2014.07 release."
1157 @echo >&2 "Please switch over to SPL."
1158 @echo >&2 "Otherwise, this board will be removed."
1159 @echo >&2 "=================================================="
1162 nand_spl/u-boot-spl-16k.bin: nand_spl
1165 u-boot-nand.bin: nand_spl/u-boot-spl-16k.bin u-boot.bin FORCE
1166 $(call if_changed,cat)
1168 spl/u-boot-spl.bin: spl/u-boot-spl
1170 spl/u-boot-spl: tools prepare
1171 $(Q)$(MAKE) obj=spl -f $(srctree)/spl/Makefile all
1173 spl/sunxi-spl.bin: spl/u-boot-spl
1176 tpl/u-boot-tpl.bin: tools prepare
1177 $(Q)$(MAKE) obj=tpl -f $(srctree)/spl/Makefile all CONFIG_TPL_BUILD=y
1179 TAG_SUBDIRS := $(u-boot-dirs) include
1185 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1186 -name '*.[chS]' -print`
1189 etags -a -o $(obj)etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1190 -name '*.[chS]' -print`
1192 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1198 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1201 @$(call SYSTEM_MAP,$<) > $@
1204 @if test $(call dtc-version) -lt 0104; then \
1205 echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
1209 #########################################################################
1211 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1212 # R_AARCH64_RELATIVE (64-bit).
1213 checkarmreloc: u-boot
1214 @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1215 grep R_A | sort -u`"; \
1216 if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1217 "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1218 echo "$< contains unexpected relocations: $$RELOC"; \
1223 $(Q)$(MAKE) $(build)=tools/$@
1225 tools-only: scripts_basic $(version_h) $(timestamp_h)
1226 $(Q)$(MAKE) $(build)=tools
1228 tools-all: export HOST_TOOLS_ALL=y
1229 tools-all: env tools ;
1231 cross_tools: export CROSS_BUILD_TOOLS=y
1232 cross_tools: tools ;
1236 git log --no-merges U-Boot-1_1_5.. | \
1237 unexpand -a | sed -e 's/\s\s*$$//' > $@
1239 include/license.h: tools/bin2header COPYING
1240 cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h
1241 #########################################################################
1244 # Cleaning is done on three levels.
1245 # make clean Delete most generated files
1246 # Leave enough to build external modules
1247 # make mrproper Delete the current configuration, and all generated files
1248 # make distclean Remove editor backup files, patch leftover files and the like
1250 # Directories & files removed with 'make clean'
1251 CLEAN_DIRS += $(MODVERDIR)
1252 CLEAN_FILES += u-boot.lds include/bmp_logo.h include/bmp_logo_data.h \
1253 include/autoconf.mk* include/spl-autoconf.mk \
1254 include/tpl-autoconf.mk
1256 # Directories & files removed with 'make clobber'
1257 CLOBBER_DIRS += $(patsubst %,spl/%, $(filter-out Makefile, \
1258 $(shell ls -1 spl 2>/dev/null))) \
1260 CLOBBER_FILES += u-boot* MLO* SPL System.map nand_spl/u-boot*
1262 # Directories & files removed with 'make mrproper'
1263 MRPROPER_DIRS += include/config include/generated \
1265 MRPROPER_FILES += .config .config.old \
1266 tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1267 include/config.h include/config.mk
1269 # clean - Delete most, but leave enough to build external modules
1271 clean: rm-dirs := $(CLEAN_DIRS)
1272 clean: rm-files := $(CLEAN_FILES)
1274 clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
1276 clean-dirs := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
1278 PHONY += $(clean-dirs) clean archclean
1280 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1282 # TODO: Do not use *.cfgtmp
1283 clean: $(clean-dirs)
1286 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1287 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1288 -o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
1289 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1290 -o -name '*.symtypes' -o -name 'modules.order' \
1291 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1292 -o -name '*.gcno' \) -type f -print | xargs rm -f
1293 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1294 -path './nand_spl/*' -type l -print | xargs rm -f
1298 clobber: rm-dirs := $(CLOBBER_DIRS)
1299 clobber: rm-files := $(CLOBBER_FILES)
1307 # mrproper - Delete all generated files, including .config
1309 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1310 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1311 mrproper-dirs := $(addprefix _mrproper_,scripts)
1313 PHONY += $(mrproper-dirs) mrproper archmrproper
1315 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1317 mrproper: clobber $(mrproper-dirs)
1320 @rm -f arch/*/include/asm/arch arch/*/include/asm/proc
1327 @find $(srctree) $(RCS_FIND_IGNORE) \
1328 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1329 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1330 -o -name '.*.rej' -o -name '*%' -o -name 'core' \
1331 -o -name '*.pyc' \) \
1332 -type f -print | xargs rm -f
1335 F=`basename $(srctree)` ; cd .. ; \
1336 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1339 @echo 'Cleaning targets:'
1340 @echo ' clean - Remove most generated files but keep the config and'
1341 @echo ' necessities for testing u-boot'
1342 @echo ' clobber - Remove most generated files but keep the config'
1343 @echo ' mrproper - Remove all generated files + config + various backup files'
1344 @echo ' distclean - mrproper + remove editor backup and patch files'
1346 # uncomment after adding Kconfig feature
1347 # @echo 'Configuration targets:'
1348 # @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1350 @echo 'Other generic targets:'
1351 @echo ' all - Build all necessary images depending on configuration'
1352 @echo ' u-boot - Build the bare u-boot'
1353 @echo ' dir/ - Build all files in dir and below'
1354 @echo ' dir/file.[oisS] - Build specified target only'
1355 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1356 @echo ' (requires a recent binutils and recent build (System.map))'
1357 @echo ' tags/TAGS - Generate tags file for editors'
1358 @echo ' cscope - Generate cscope index'
1359 @echo ' ubootrelease - Output the release version string'
1360 @echo ' ubootversion - Output the version stored in Makefile'
1362 @echo 'Static analysers'
1363 @echo ' checkstack - Generate a list of stack hogs'
1365 @echo 'Documentation targets:'
1366 @$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
1368 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1369 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1370 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1371 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1372 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1373 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1374 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1375 @echo ' 1: warnings which may be relevant and do not occur too often'
1376 @echo ' 2: warnings which occur quite often but may still be relevant'
1377 @echo ' 3: more obscure warnings, can most likely be ignored'
1378 @echo ' Multiple levels can be combined with W=12 or W=123'
1380 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1381 @echo 'For further info see the ./README file'
1384 # Documentation targets
1385 # ---------------------------------------------------------------------------
1386 %docs: scripts_basic FORCE
1387 $(Q)$(MAKE) $(build)=scripts build_docproc
1388 $(Q)$(MAKE) $(build)=doc/DocBook $@
1391 PHONY += prepare scripts
1395 endif #ifeq ($(config-targets),1)
1396 endif #ifeq ($(mixed-targets),1)
1398 PHONY += checkstack ubootrelease ubootversion
1401 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1402 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1405 @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1408 @echo $(UBOOTVERSION)
1411 # ---------------------------------------------------------------------------
1412 # Single targets are compatible with:
1413 # - build with mixed source and output
1414 # - build with separate output dir 'make O=...'
1415 # - external modules
1417 # target-dir => where to store outputfile
1418 # build-dir => directory in kernel source tree to use
1420 ifeq ($(KBUILD_EXTMOD),)
1421 build-dir = $(patsubst %/,%,$(dir $@))
1422 target-dir = $(dir $@)
1424 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1425 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1426 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1429 %.s: %.c prepare scripts FORCE
1430 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1431 %.i: %.c prepare scripts FORCE
1432 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1433 %.o: %.c prepare scripts FORCE
1434 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1435 %.lst: %.c prepare scripts FORCE
1436 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1437 %.s: %.S prepare scripts FORCE
1438 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1439 %.o: %.S prepare scripts FORCE
1440 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1441 %.symtypes: %.c prepare scripts FORCE
1442 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1445 /: prepare scripts FORCE
1447 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1448 $(build)=$(build-dir)
1449 %/: prepare scripts FORCE
1451 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1452 $(build)=$(build-dir)
1453 %.ko: prepare scripts FORCE
1455 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1456 $(build)=$(build-dir) $(@:.ko=.o)
1457 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1459 # FIXME Should go into a make.lib or something
1460 # ===========================================================================
1462 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1463 cmd_rmdirs = rm -rf $(rm-dirs)
1465 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1466 cmd_rmfiles = rm -f $(rm-files)
1468 # read all saved command lines
1470 targets := $(wildcard $(sort $(targets)))
1471 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1473 ifneq ($(cmd_files),)
1474 $(cmd_files): ; # Do not try to update included dependency files
1475 include $(cmd_files)
1478 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1480 # $(Q)$(MAKE) $(clean)=dir
1481 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1483 endif # skip-makefile
1488 # Declare the contents of the .PHONY variable as phony. We keep that
1489 # information in a variable so we can use it in if_changed and friends.