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
360 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
361 -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
363 KBUILD_CPPFLAGS := -D__KERNEL__
365 KBUILD_CFLAGS := -Wall -Wstrict-prototypes \
366 -Wno-format-security \
367 -fno-builtin -ffreestanding
368 KBUILD_AFLAGS := -D__ASSEMBLY__
370 # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
371 UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
372 UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
374 export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
375 export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
376 export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
377 export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
379 export DTC CHECK CHECKFLAGS
381 export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
382 export KBUILD_CFLAGS KBUILD_AFLAGS
384 # When compiling out-of-tree modules, put MODVERDIR in the module
385 # tree rather than in the kernel tree. The kernel tree might
387 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
389 # Files to ignore in find ... statements
391 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
392 -name CVS -o -name .pc -o -name .hg -o -name .git \) \
394 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
395 --exclude CVS --exclude .pc --exclude .hg --exclude .git
397 # ===========================================================================
398 # Rules shared between *config targets and build targets
400 # Basic helpers built in scripts/
401 PHONY += scripts_basic
403 $(Q)$(MAKE) $(build)=scripts/basic
404 $(Q)rm -f .tmp_quiet_recordmcount
406 # To avoid any implicit rule to kick in, define an empty command.
407 scripts/basic/%: scripts_basic ;
409 PHONY += outputmakefile
410 # outputmakefile generates a Makefile in the output directory, if using a
411 # separate output directory. This allows convenient use of make in the
414 ifneq ($(KBUILD_SRC),)
415 $(Q)ln -fsn $(srctree) source
416 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
417 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
420 # To make sure we do not include .config for any of the *config targets
421 # catch them early, and hand them over to scripts/kconfig/Makefile
422 # It is allowed to specify more targets when calling make, including
423 # mixing *config targets and build targets.
424 # For example 'make oldconfig all'.
425 # Detect when mixed targets is specified, and make a second invocation
426 # of make so .config is not included in this case either (for *config).
428 version_h := include/generated/version_autogenerated.h
429 timestamp_h := include/generated/timestamp_autogenerated.h
431 no-dot-config-targets := clean clobber mrproper distclean \
432 help %docs check% coccicheck \
433 ubootversion backup tools-only
439 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
440 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
445 ifeq ($(KBUILD_EXTMOD),)
446 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
448 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
454 ifeq ($(mixed-targets),1)
455 # ===========================================================================
456 # We're called with mixed targets (*config and build targets).
457 # Handle them one by one.
459 PHONY += $(MAKECMDGOALS) build-one-by-one
461 $(MAKECMDGOALS): build-one-by-one
466 for i in $(MAKECMDGOALS); do \
467 $(MAKE) -f $(srctree)/Makefile $$i; \
471 ifeq ($(config-targets),1)
472 # ===========================================================================
473 # *config targets only - make sure prerequisites are updated, and descend
474 # in scripts/kconfig to make the *config target
476 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
477 # KBUILD_DEFCONFIG may point out an alternative default configuration
478 # used for 'make defconfig'
480 %_config:: outputmakefile
481 @$(MKCONFIG) -A $(@:_config=)
484 # ===========================================================================
485 # Build targets only - this includes vmlinux, arch specific targets, clean
486 # targets and others. In general all targets except *config targets.
488 # load ARCH, BOARD, and CPU configuration
489 -include include/config.mk
491 ifeq ($(dot-config),1)
493 -include include/autoconf.mk
494 -include include/autoconf.mk.dep
496 # load other configuration
497 include $(srctree)/config.mk
499 ifeq ($(wildcard include/config.mk),)
500 $(error "System not configured - see README")
503 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
504 # that (or fail if absent). Otherwise, search for a linker script in a
508 #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
509 ifdef CONFIG_SYS_LDSCRIPT
510 # need to strip off double quotes
511 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
515 # If there is no specified link script, we look in a number of places for it
517 ifeq ($(CONFIG_NAND_U_BOOT),y)
518 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot-nand.lds
519 ifeq ($(wildcard $(LDSCRIPT)),)
520 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot-nand.lds
523 ifeq ($(wildcard $(LDSCRIPT)),)
524 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
526 ifeq ($(wildcard $(LDSCRIPT)),)
527 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
529 ifeq ($(wildcard $(LDSCRIPT)),)
530 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
537 endif # $(dot-config)
539 KBUILD_CFLAGS += -Os #-fomit-frame-pointer
542 KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
545 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
547 ifeq ($(COMPILER),clang)
548 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
549 KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,)
550 KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable)
551 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
552 KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
553 # Quiet clang warning: comparison of unsigned expression < 0 is always false
554 KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
555 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the
556 # source of a reference will be _MergedGlobals and not on of the whitelisted names.
557 # See modpost pattern 2
558 KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
562 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
563 # option to the assembler.
566 # Report stack usage if supported
567 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
568 KBUILD_CFLAGS += -fstack-usage
571 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
573 # turn jbsr into jsr for m68k
575 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
576 KBUILD_AFLAGS += -Wa,-gstabs,-S
580 # Prohibit date/time macros, which would make the build non-deterministic
581 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
583 ifneq ($(CONFIG_SYS_TEXT_BASE),)
584 KBUILD_CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
587 export CONFIG_SYS_TEXT_BASE
589 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
590 KBUILD_CPPFLAGS += $(KCPPFLAGS)
591 KBUILD_AFLAGS += $(KAFLAGS)
592 KBUILD_CFLAGS += $(KCFLAGS)
594 # Use UBOOTINCLUDE when you must reference the include/ directory.
595 # Needed to be compatible with the O= option
598 $(if $(KBUILD_SRC), -I$(srctree)/include) \
599 -I$(srctree)/arch/$(ARCH)/include
601 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
602 CHECKFLAGS += $(NOSTDINC_FLAGS)
605 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
607 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
609 #########################################################################
610 # U-Boot objects....order is important (i.e. start must be first)
612 head-y := $(CPUDIR)/start.o
613 head-$(CONFIG_4xx) += arch/powerpc/cpu/ppc4xx/resetvec.o
614 head-$(CONFIG_MPC85xx) += arch/powerpc/cpu/mpc85xx/resetvec.o
616 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
619 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
622 libs-y += $(CPUDIR)/$(SOC)/
624 libs-$(CONFIG_OF_EMBED) += dts/
625 libs-y += arch/$(ARCH)/lib/
630 libs-$(CONFIG_DM) += drivers/core/
631 libs-y += drivers/dma/
632 libs-y += drivers/gpio/
633 libs-y += drivers/i2c/
634 libs-y += drivers/input/
635 libs-y += drivers/mmc/
636 libs-y += drivers/mtd/
637 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
638 libs-y += drivers/mtd/onenand/
639 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
640 libs-y += drivers/mtd/spi/
641 libs-y += drivers/net/
642 libs-y += drivers/net/phy/
643 libs-y += drivers/pci/
644 libs-y += drivers/power/ \
645 drivers/power/fuel_gauge/ \
647 drivers/power/pmic/ \
648 drivers/power/battery/
649 libs-y += drivers/spi/
650 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
651 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
652 libs-y += drivers/serial/
653 libs-y += drivers/usb/eth/
654 libs-y += drivers/usb/gadget/
655 libs-y += drivers/usb/host/
656 libs-y += drivers/usb/musb/
657 libs-y += drivers/usb/musb-new/
658 libs-y += drivers/usb/phy/
659 libs-y += drivers/usb/ulpi/
661 libs-y += lib/libfdt/
662 libs-$(CONFIG_API) += api/
663 libs-$(CONFIG_HAS_POST) += post/
666 libs-$(CONFIG_DM_DEMO) += drivers/demo/
668 ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35 mxs vf610))
669 libs-y += arch/$(ARCH)/imx-common/
672 libs-$(CONFIG_ARM) += arch/arm/cpu/
673 libs-$(CONFIG_PPC) += arch/powerpc/cpu/
675 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
677 libs-y := $(sort $(libs-y))
679 u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
681 u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
683 libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
685 u-boot-init := $(head-y)
686 u-boot-main := $(libs-y)
690 ifdef CONFIG_USE_PRIVATE_LIBGCC
691 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
692 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
694 PLATFORM_LIBGCC = -L $(CONFIG_USE_PRIVATE_LIBGCC) -lgcc
697 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
699 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
701 export PLATFORM_LIBGCC
703 # Special flags for CPP when processing the linker script.
704 # Pass the version down so we can handle backwards compatibility
707 -include $(srctree)/include/u-boot/u-boot.lds.h \
709 $(shell $(LD) --version | \
710 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
712 #########################################################################
713 #########################################################################
715 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
717 @actual=`wc -c $@ | awk '{print $$1}'`; \
718 limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
719 if test $$actual -gt $$limit; then \
720 echo "$@ exceeds file size limit:" >&2 ; \
721 echo " limit: $$limit bytes" >&2 ; \
722 echo " actual: $$actual bytes" >&2 ; \
723 echo " excess: $$((actual - limit)) bytes" >&2; \
730 # Statically apply RELA-style relocations (currently arm64 only)
731 ifneq ($(CONFIG_STATIC_RELA),)
732 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
734 start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
735 end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
736 tools/relocate-rela $(2) $(3) $$start $$end
741 # Always append ALL so that arch config.mk's can add custom ones
742 ALL-y += u-boot.srec u-boot.bin System.map
744 ALL-$(CONFIG_NAND_U_BOOT) += u-boot-nand.bin
745 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
746 ifeq ($(CONFIG_SPL_FSL_PBL),y)
747 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
749 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
751 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
752 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
753 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
754 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb u-boot-dtb.bin
755 ifeq ($(CONFIG_SPL_FRAMEWORK),y)
756 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
758 ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
759 ifneq ($(CONFIG_SPL_TARGET),)
760 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
762 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
764 # enable combined SPL/u-boot/dtb rules for tegra
765 ifneq ($(CONFIG_TEGRA),)
766 ifeq ($(CONFIG_SPL),y)
767 ifeq ($(CONFIG_OF_SEPARATE),y)
768 ALL-y += u-boot-dtb-tegra.bin
770 ALL-y += u-boot-nodtb-tegra.bin
775 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
776 ifneq ($(CONFIG_SYS_TEXT_BASE),)
777 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
780 quiet_cmd_objcopy = OBJCOPY $@
781 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
783 quiet_cmd_mkimage = MKIMAGE $@
784 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
785 $(if $(KBUILD_VERBOSE:1=), >/dev/null)
787 quiet_cmd_cat = CAT $@
788 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
790 append = cat $(filter-out $< $(PHONY), $^) >> $@
792 quiet_cmd_pad_cat = CAT $@
793 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
798 dtbs dts/dt.dtb: checkdtc u-boot
799 $(Q)$(MAKE) $(build)=dts dtbs
801 u-boot-dtb.bin: u-boot.bin dts/dt.dtb FORCE
802 $(call if_changed,cat)
805 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
807 quiet_cmd_copy = COPY $@
810 u-boot.dtb: dts/dt.dtb
813 OBJCOPYFLAGS_u-boot.hex := -O ihex
815 OBJCOPYFLAGS_u-boot.srec := -O srec
817 u-boot.hex u-boot.srec: u-boot FORCE
818 $(call if_changed,objcopy)
820 OBJCOPYFLAGS_u-boot.bin := -O binary
822 u-boot.bin: u-boot FORCE
823 $(call if_changed,objcopy)
824 $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
829 $(LDR) -T $(CONFIG_BFIN_CPU) -c $@ $< $(LDR_FLAGS)
832 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
834 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
836 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
837 $(call if_changed,objcopy)
840 # U-Boot entry point, needed for booting of full-blown U-Boot
841 # from the SPL U-Boot version.
843 ifndef CONFIG_SYS_UBOOT_START
844 CONFIG_SYS_UBOOT_START := 0
847 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
848 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
849 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
851 MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
852 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
854 MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
855 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
857 u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE
858 $(call if_changed,mkimage)
860 MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
862 u-boot-dtb.img: u-boot-dtb.bin FORCE
863 $(call if_changed,mkimage)
865 u-boot.sha1: u-boot.bin
866 tools/ubsha1 u-boot.bin
869 $(OBJDUMP) -d $< > $@
872 SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
874 SPL_PAYLOAD := u-boot.bin
877 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
878 --pad-to=$(CONFIG_SPL_PAD_TO)
879 u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
880 $(call if_changed,pad_cat)
882 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
883 --pad-to=$(CONFIG_TPL_PAD_TO)
884 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
885 $(call if_changed,pad_cat)
887 SPL: spl/u-boot-spl.bin FORCE
888 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
890 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
891 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
893 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
895 u-boot.ubl: u-boot-with-spl.bin FORCE
896 $(call if_changed,mkimage)
898 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
899 $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
900 -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
901 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
902 $(call if_changed,mkimage)
904 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
905 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
906 $(call if_changed,pad_cat)
908 u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
909 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
910 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
911 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
913 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
914 # Both images are created using mkimage (crc etc), so that the ROM
915 # bootloader can check its integrity. Padding needs to be done to the
916 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
917 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
918 # The resulting image containing both U-Boot images is called u-boot.spr
919 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
920 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
921 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
922 $(call if_changed,mkimage)
924 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
926 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
927 $(call if_changed,pad_cat)
929 MKIMAGEFLAGS_u-boot-spl.gph = -A $(ARCH) -T gpimage -C none \
930 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n SPL
931 spl/u-boot-spl.gph: spl/u-boot-spl.bin FORCE
932 $(call if_changed,mkimage)
934 OBJCOPYFLAGS_u-boot-spi.gph = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
936 u-boot-spi.gph: spl/u-boot-spl.gph u-boot.img FORCE
937 $(call if_changed,pad_cat)
939 ifneq ($(CONFIG_SUNXI),)
940 OBJCOPYFLAGS_u-boot-sunxi-with-spl.bin = -I binary -O binary \
941 --pad-to=$(CONFIG_SPL_PAD_TO) --gap-fill=0xff
942 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img FORCE
943 $(call if_changed,pad_cat)
946 ifneq ($(CONFIG_TEGRA),)
947 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
948 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
949 $(call if_changed,pad_cat)
951 ifeq ($(CONFIG_OF_SEPARATE),y)
952 u-boot-dtb-tegra.bin: u-boot-nodtb-tegra.bin dts/dt.dtb FORCE
953 $(call if_changed,cat)
957 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
958 $(call if_changed,cat)
960 #Add a target to create boot binary having SPL binary in PBI format
961 #concatenated with u-boot binary. It is need by PowerPC SoC having
962 #internal SRAM <= 512KB.
963 MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
964 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
966 spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
967 $(call if_changed,mkimage)
969 OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
972 u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl u-boot.bin FORCE
973 $(call if_changed,pad_cat)
975 # PPC4xx needs the SPL at the end of the image, since the reset vector
976 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
977 # and need to introduce a new build target with the full blown U-Boot
978 # at the start padded up to the start of the SPL image. And then concat
979 # the SPL image to the end.
981 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
982 --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
983 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
984 $(call if_changed,pad_cat)
986 # Create a new ELF from a raw binary file. This is useful for arm64
987 # where static relocation needs to be performed on the raw binary,
988 # but certain simulators only accept an ELF file (but don't do the
990 # FIXME refactor dts/Makefile to share target/arch detection
991 u-boot.elf: u-boot.bin
992 @$(OBJCOPY) -B aarch64 -I binary -O elf64-littleaarch64 \
994 @$(LD) u-boot-elf.o -o $@ \
995 --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
996 -Ttext=$(CONFIG_SYS_TEXT_BASE)
998 # Rule to link u-boot
999 # May be overridden by arch/$(ARCH)/config.mk
1000 quiet_cmd_u-boot__ ?= LD $@
1001 cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
1002 -T u-boot.lds $(u-boot-init) \
1003 --start-group $(u-boot-main) --end-group \
1004 $(PLATFORM_LIBS) -Map u-boot.map
1006 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds
1007 $(call if_changed,u-boot__)
1008 ifeq ($(CONFIG_KALLSYMS),y)
1009 smap=`$(call SYSTEM_MAP,u-boot) | \
1010 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
1011 $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
1012 -c $(srctree)/common/system_map.c -o common/system_map.o
1013 $(call cmd,u-boot__) common/system_map.o
1016 # The actual objects are generated when descending,
1017 # make sure no implicit rule kicks in
1018 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
1020 # Handle descending into subdirectories listed in $(vmlinux-dirs)
1021 # Preset locale variables to speed up the build process. Limit locale
1022 # tweaks to this spot to avoid wrong language settings when running
1023 # make menuconfig etc.
1024 # Error messages still appears in the original language
1026 PHONY += $(u-boot-dirs)
1027 $(u-boot-dirs): prepare scripts
1028 $(Q)$(MAKE) $(build)=$@
1031 # The "tools" are needed early
1032 $(filter-out tools, $(u-boot-dirs)): tools
1033 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
1034 # is "yes"), so compile examples after U-Boot is compiled.
1035 examples: $(filter-out examples, $(u-boot-dirs))
1037 define filechk_uboot.release
1038 echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1041 # Store (new) UBOOTRELEASE string in include/config/uboot.release
1042 include/config/uboot.release: Makefile FORCE
1043 $(call filechk,uboot.release)
1046 # Things we need to do before we recursively start building the kernel
1047 # or the modules are listed in "prepare".
1048 # A multi level approach is used. prepareN is processed before prepareN-1.
1049 # archprepare is used in arch Makefiles and when processed asm symlink,
1050 # version.h and scripts_basic is processed / created.
1052 # Listed in dependency order
1053 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1055 # prepare3 is used to check if we are building in a separate output directory,
1057 # 1) Check that make has not been executed in the kernel src $(srctree)
1058 prepare3: include/config/uboot.release
1059 ifneq ($(KBUILD_SRC),)
1060 @$(kecho) ' Using $(srctree) as source for u-boot'
1061 $(Q)if [ -f $(srctree)/include/config.mk ]; then \
1062 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
1063 echo >&2 " in the '$(srctree)' directory.";\
1068 # prepare2 creates a makefile if using a separate output directory
1069 prepare2: prepare3 outputmakefile
1071 prepare1: prepare2 $(version_h) $(timestamp_h)
1072 ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
1073 ifeq ($(CONFIG_SYS_GENERIC_BOARD),y)
1074 @echo >&2 " Your architecture does not support generic board."
1075 @echo >&2 " Please undefine CONFIG_SYS_GENERIC_BOARD in your board config file."
1079 ifeq ($(wildcard $(LDSCRIPT)),)
1080 @echo >&2 " Could not find linker script."
1084 archprepare: prepare1 scripts_basic
1086 prepare0: archprepare FORCE
1087 $(Q)$(MAKE) $(build)=.
1089 # All the preparing..
1092 # Generate some files
1093 # ---------------------------------------------------------------------------
1095 define filechk_version.h
1096 (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1097 echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1098 echo \#define CC_VERSION_STRING \"$$($(CC) --version | head -n 1)\"; \
1099 echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; )
1102 define filechk_timestamp.h
1103 (LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1104 LC_ALL=C date +'#define U_BOOT_TIME "%T"')
1107 $(version_h): include/config/uboot.release FORCE
1108 $(call filechk,version.h)
1110 $(timestamp_h): $(srctree)/Makefile FORCE
1111 $(call filechk,timestamp.h)
1114 # Auto-generate the autoconf.mk file (which is included by all makefiles)
1116 # This target actually generates 2 files; autoconf.mk and autoconf.mk.dep.
1117 # the dep file is only include in this top level makefile to determine when
1118 # to regenerate the autoconf.mk file.
1120 quiet_cmd_autoconf_dep = GEN $@
1121 cmd_autoconf_dep = $(CC) -x c -DDO_DEPS_ONLY -M $(c_flags) \
1122 -MQ include/autoconf.mk $(srctree)/include/common.h > $@ || rm $@
1124 include/autoconf.mk.dep: include/config.h include/common.h
1125 $(call cmd,autoconf_dep)
1127 quiet_cmd_autoconf = GEN $@
1129 $(CPP) $(c_flags) -DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && \
1130 sed -n -f $(srctree)/tools/scripts/define2mk.sed $@.tmp > $@; \
1133 include/autoconf.mk: include/config.h
1134 $(call cmd,autoconf)
1136 # ---------------------------------------------------------------------------
1140 @echo '*** Warning: make $@ is unnecessary now.'
1142 # ---------------------------------------------------------------------------
1143 quiet_cmd_cpp_lds = LDS $@
1144 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
1145 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
1147 u-boot.lds: $(LDSCRIPT) prepare FORCE
1148 $(call if_changed_dep,cpp_lds)
1152 $(Q)$(MAKE) $(build)=nand_spl/board/$(BOARDDIR) all
1154 @echo >&2 "==================== WARNING ====================="
1155 @echo >&2 "nand_spl will not be included in v2014.07 release."
1156 @echo >&2 "Please switch over to SPL."
1157 @echo >&2 "Otherwise, this board will be removed."
1158 @echo >&2 "=================================================="
1161 nand_spl/u-boot-spl-16k.bin: nand_spl
1164 u-boot-nand.bin: nand_spl/u-boot-spl-16k.bin u-boot.bin FORCE
1165 $(call if_changed,cat)
1167 spl/u-boot-spl.bin: spl/u-boot-spl
1169 spl/u-boot-spl: tools prepare
1170 $(Q)$(MAKE) obj=spl -f $(srctree)/spl/Makefile all
1172 spl/sunxi-spl.bin: spl/u-boot-spl
1175 tpl/u-boot-tpl.bin: tools prepare
1176 $(Q)$(MAKE) obj=tpl -f $(srctree)/spl/Makefile all CONFIG_TPL_BUILD=y
1178 TAG_SUBDIRS := $(u-boot-dirs) include
1184 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1185 -name '*.[chS]' -print`
1188 etags -a -o $(obj)etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1189 -name '*.[chS]' -print`
1191 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1197 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1200 @$(call SYSTEM_MAP,$<) > $@
1203 @if test $(call dtc-version) -lt 0104; then \
1204 echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
1208 #########################################################################
1210 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1211 # R_AARCH64_RELATIVE (64-bit).
1212 checkarmreloc: u-boot
1213 @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1214 grep R_A | sort -u`"; \
1215 if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1216 "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1217 echo "$< contains unexpected relocations: $$RELOC"; \
1222 $(Q)$(MAKE) $(build)=tools/$@
1224 tools-only: scripts_basic $(version_h) $(timestamp_h)
1225 $(Q)$(MAKE) $(build)=tools
1227 tools-all: export HOST_TOOLS_ALL=y
1228 tools-all: env tools ;
1230 cross_tools: export CROSS_BUILD_TOOLS=y
1231 cross_tools: tools ;
1235 git log --no-merges U-Boot-1_1_5.. | \
1236 unexpand -a | sed -e 's/\s\s*$$//' > $@
1238 include/license.h: tools/bin2header COPYING
1239 cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h
1240 #########################################################################
1243 # Cleaning is done on three levels.
1244 # make clean Delete most generated files
1245 # Leave enough to build external modules
1246 # make mrproper Delete the current configuration, and all generated files
1247 # make distclean Remove editor backup files, patch leftover files and the like
1249 # Directories & files removed with 'make clean'
1250 CLEAN_DIRS += $(MODVERDIR)
1251 CLEAN_FILES += u-boot.lds include/bmp_logo.h include/bmp_logo_data.h \
1252 include/autoconf.mk* include/spl-autoconf.mk \
1253 include/tpl-autoconf.mk
1255 # Directories & files removed with 'make clobber'
1256 CLOBBER_DIRS += $(patsubst %,spl/%, $(filter-out Makefile, \
1257 $(shell ls -1 spl 2>/dev/null))) \
1259 CLOBBER_FILES += u-boot* MLO* SPL System.map nand_spl/u-boot*
1261 # Directories & files removed with 'make mrproper'
1262 MRPROPER_DIRS += include/config include/generated \
1264 MRPROPER_FILES += .config .config.old \
1265 tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1266 include/config.h include/config.mk
1268 # clean - Delete most, but leave enough to build external modules
1270 clean: rm-dirs := $(CLEAN_DIRS)
1271 clean: rm-files := $(CLEAN_FILES)
1273 clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
1275 clean-dirs := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
1277 PHONY += $(clean-dirs) clean archclean
1279 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1281 # TODO: Do not use *.cfgtmp
1282 clean: $(clean-dirs)
1285 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1286 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1287 -o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
1288 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1289 -o -name '*.symtypes' -o -name 'modules.order' \
1290 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1291 -o -name '*.gcno' \) -type f -print | xargs rm -f
1292 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1293 -path './nand_spl/*' -type l -print | xargs rm -f
1297 clobber: rm-dirs := $(CLOBBER_DIRS)
1298 clobber: rm-files := $(CLOBBER_FILES)
1306 # mrproper - Delete all generated files, including .config
1308 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1309 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1310 mrproper-dirs := $(addprefix _mrproper_,scripts)
1312 PHONY += $(mrproper-dirs) mrproper archmrproper
1314 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1316 mrproper: clobber $(mrproper-dirs)
1319 @rm -f arch/*/include/asm/arch arch/*/include/asm/proc
1326 @find $(srctree) $(RCS_FIND_IGNORE) \
1327 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1328 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1329 -o -name '.*.rej' -o -name '*%' -o -name 'core' \
1330 -o -name '*.pyc' \) \
1331 -type f -print | xargs rm -f
1334 F=`basename $(srctree)` ; cd .. ; \
1335 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1338 @echo 'Cleaning targets:'
1339 @echo ' clean - Remove most generated files but keep the config and'
1340 @echo ' necessities for testing u-boot'
1341 @echo ' clobber - Remove most generated files but keep the config'
1342 @echo ' mrproper - Remove all generated files + config + various backup files'
1343 @echo ' distclean - mrproper + remove editor backup and patch files'
1345 # uncomment after adding Kconfig feature
1346 # @echo 'Configuration targets:'
1347 # @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1349 @echo 'Other generic targets:'
1350 @echo ' all - Build all necessary images depending on configuration'
1351 @echo ' u-boot - Build the bare u-boot'
1352 @echo ' dir/ - Build all files in dir and below'
1353 @echo ' dir/file.[oisS] - Build specified target only'
1354 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1355 @echo ' (requires a recent binutils and recent build (System.map))'
1356 @echo ' tags/TAGS - Generate tags file for editors'
1357 @echo ' cscope - Generate cscope index'
1358 @echo ' ubootrelease - Output the release version string'
1359 @echo ' ubootversion - Output the version stored in Makefile'
1361 @echo 'Static analysers'
1362 @echo ' checkstack - Generate a list of stack hogs'
1364 @echo 'Documentation targets:'
1365 @$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
1367 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1368 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1369 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1370 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1371 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1372 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1373 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1374 @echo ' 1: warnings which may be relevant and do not occur too often'
1375 @echo ' 2: warnings which occur quite often but may still be relevant'
1376 @echo ' 3: more obscure warnings, can most likely be ignored'
1377 @echo ' Multiple levels can be combined with W=12 or W=123'
1379 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1380 @echo 'For further info see the ./README file'
1383 # Documentation targets
1384 # ---------------------------------------------------------------------------
1385 %docs: scripts_basic FORCE
1386 $(Q)$(MAKE) $(build)=scripts build_docproc
1387 $(Q)$(MAKE) $(build)=doc/DocBook $@
1390 PHONY += prepare scripts
1394 endif #ifeq ($(config-targets),1)
1395 endif #ifeq ($(mixed-targets),1)
1397 PHONY += checkstack ubootrelease ubootversion
1400 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1401 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1404 @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1407 @echo $(UBOOTVERSION)
1410 # ---------------------------------------------------------------------------
1411 # Single targets are compatible with:
1412 # - build with mixed source and output
1413 # - build with separate output dir 'make O=...'
1414 # - external modules
1416 # target-dir => where to store outputfile
1417 # build-dir => directory in kernel source tree to use
1419 ifeq ($(KBUILD_EXTMOD),)
1420 build-dir = $(patsubst %/,%,$(dir $@))
1421 target-dir = $(dir $@)
1423 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1424 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1425 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1428 %.s: %.c prepare scripts FORCE
1429 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1430 %.i: %.c prepare scripts FORCE
1431 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1432 %.o: %.c prepare scripts FORCE
1433 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1434 %.lst: %.c prepare scripts FORCE
1435 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1436 %.s: %.S prepare scripts FORCE
1437 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1438 %.o: %.S prepare scripts FORCE
1439 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1440 %.symtypes: %.c prepare scripts FORCE
1441 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1444 /: prepare scripts FORCE
1446 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1447 $(build)=$(build-dir)
1448 %/: prepare scripts FORCE
1450 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1451 $(build)=$(build-dir)
1452 %.ko: prepare scripts FORCE
1454 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1455 $(build)=$(build-dir) $(@:.ko=.o)
1456 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1458 # FIXME Should go into a make.lib or something
1459 # ===========================================================================
1461 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1462 cmd_rmdirs = rm -rf $(rm-dirs)
1464 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1465 cmd_rmfiles = rm -f $(rm-files)
1467 # read all saved command lines
1469 targets := $(wildcard $(sort $(targets)))
1470 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1472 ifneq ($(cmd_files),)
1473 $(cmd_files): ; # Do not try to update included dependency files
1474 include $(cmd_files)
1477 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1479 # $(Q)$(MAKE) $(clean)=dir
1480 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1482 endif # skip-makefile
1487 # Declare the contents of the .PHONY variable as phony. We keep that
1488 # information in a variable so we can use it in if_changed and friends.