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 $(error "System not configured - see README")
488 ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
489 ifneq ($(CONFIG_SYS_GENERIC_BOARD),)
490 $(error Your architecture does not support generic board. \
491 Please undefined CONFIG_SYS_GENERIC_BOARD in your board config file)
495 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
496 # that (or fail if absent). Otherwise, search for a linker script in a
499 LDSCRIPT_MAKEFILE_DIR = $(dir $(LDSCRIPT))
502 #LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
503 ifdef CONFIG_SYS_LDSCRIPT
504 # need to strip off double quotes
505 LDSCRIPT := $(CONFIG_SYS_LDSCRIPT:"%"=%)
509 # If there is no specified link script, we look in a number of places for it
511 ifeq ($(CONFIG_NAND_U_BOOT),y)
512 LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
513 ifeq ($(wildcard $(LDSCRIPT)),)
514 LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot-nand.lds
517 ifeq ($(wildcard $(LDSCRIPT)),)
518 LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
520 ifeq ($(wildcard $(LDSCRIPT)),)
521 LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot.lds
523 ifeq ($(wildcard $(LDSCRIPT)),)
524 LDSCRIPT := $(TOPDIR)/arch/$(ARCH)/cpu/u-boot.lds
525 # We don't expect a Makefile here
526 LDSCRIPT_MAKEFILE_DIR =
528 ifeq ($(wildcard $(LDSCRIPT)),)
529 $(error could not find linker script)
536 endif # $(dot-config)
538 KBUILD_CFLAGS += -Os #-fomit-frame-pointer
541 KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
544 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
547 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
548 # option to the assembler.
551 # Report stack usage if supported
552 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
553 KBUILD_CFLAGS += -fstack-usage
556 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
558 # turn jbsr into jsr for m68k
560 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
561 KBUILD_AFLAGS += -Wa,-gstabs,-S
565 ifneq ($(CONFIG_SYS_TEXT_BASE),)
566 KBUILD_CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
569 export CONFIG_SYS_TEXT_BASE
571 # Use UBOOTINCLUDE when you must reference the include/ directory.
572 # Needed to be compatible with the O= option
574 ifneq ($(OBJTREE),$(SRCTREE))
575 UBOOTINCLUDE += -I$(OBJTREE)/include
577 UBOOTINCLUDE += -I$(srctree)/include \
578 -I$(srctree)/arch/$(ARCH)/include
580 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
581 CHECKFLAGS += $(NOSTDINC_FLAGS)
584 cpp_flags := $(KBUILD_CPPFLAGS) $(CPPFLAGS) $(UBOOTINCLUDE) $(NOSTDINC_FLAGS)
585 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
587 #########################################################################
588 # U-Boot objects....order is important (i.e. start must be first)
590 head-y := $(CPUDIR)/start.o
591 head-$(CONFIG_4xx) += arch/powerpc/cpu/ppc4xx/resetvec.o
592 head-$(CONFIG_MPC85xx) += arch/powerpc/cpu/mpc85xx/resetvec.o
594 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
597 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
600 libs-y += $(CPUDIR)/$(SOC)/
602 libs-$(CONFIG_OF_EMBED) += dts/
603 libs-y += arch/$(ARCH)/lib/
608 libs-y += drivers/dma/
609 libs-y += drivers/gpio/
610 libs-y += drivers/i2c/
611 libs-y += drivers/input/
612 libs-y += drivers/mmc/
613 libs-y += drivers/mtd/
614 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
615 libs-y += drivers/mtd/onenand/
616 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
617 libs-y += drivers/mtd/spi/
618 libs-y += drivers/net/
619 libs-y += drivers/net/phy/
620 libs-y += drivers/pci/
621 libs-y += drivers/power/ \
622 drivers/power/fuel_gauge/ \
624 drivers/power/pmic/ \
625 drivers/power/battery/
626 libs-y += drivers/spi/
627 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
628 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
629 libs-y += drivers/serial/
630 libs-y += drivers/usb/eth/
631 libs-y += drivers/usb/gadget/
632 libs-y += drivers/usb/host/
633 libs-y += drivers/usb/musb/
634 libs-y += drivers/usb/musb-new/
635 libs-y += drivers/usb/phy/
636 libs-y += drivers/usb/ulpi/
638 libs-y += lib/libfdt/
639 libs-$(CONFIG_API) += api/
640 libs-$(CONFIG_HAS_POST) += post/
643 ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35 mxs vf610))
644 libs-y += arch/$(ARCH)/imx-common/
647 libs-$(CONFIG_ARM) += arch/arm/cpu/
648 libs-$(CONFIG_PPC) += arch/powerpc/cpu/
650 libs-y += board/$(BOARDDIR)/
652 libs-y := $(sort $(libs-y))
654 u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
656 u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
658 libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
660 u-boot-init := $(head-y)
661 u-boot-main := $(libs-y)
665 ifdef USE_PRIVATE_LIBGCC
666 ifeq ("$(USE_PRIVATE_LIBGCC)", "yes")
667 PLATFORM_LIBGCC = $(OBJTREE)/arch/$(ARCH)/lib/lib.a
669 PLATFORM_LIBGCC = -L $(USE_PRIVATE_LIBGCC) -lgcc
672 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
674 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
677 # Special flags for CPP when processing the linker script.
678 # Pass the version down so we can handle backwards compatibility
681 -include $(TOPDIR)/include/u-boot/u-boot.lds.h \
683 $(shell $(LD) --version | \
684 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
686 #########################################################################
687 #########################################################################
689 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
691 @actual=`wc -c $@ | awk '{print $$1}'`; \
692 limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
693 if test $$actual -gt $$limit; then \
694 echo "$@ exceeds file size limit:" >&2 ; \
695 echo " limit: $$limit bytes" >&2 ; \
696 echo " actual: $$actual bytes" >&2 ; \
697 echo " excess: $$((actual - limit)) bytes" >&2; \
704 # Statically apply RELA-style relocations (currently arm64 only)
705 ifneq ($(CONFIG_STATIC_RELA),)
706 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
708 start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
709 end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
710 tools/relocate-rela $(2) $(3) $$start $$end
715 # Always append ALL so that arch config.mk's can add custom ones
716 ALL-y += u-boot.srec u-boot.bin System.map
718 ALL-$(CONFIG_NAND_U_BOOT) += u-boot-nand.bin
719 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
720 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
721 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
722 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
723 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
724 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.bin
725 ifneq ($(CONFIG_SPL_TARGET),)
726 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
728 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
730 # enable combined SPL/u-boot/dtb rules for tegra
731 ifneq ($(CONFIG_TEGRA),)
732 ifeq ($(CONFIG_SPL),y)
733 ifeq ($(CONFIG_OF_SEPARATE),y)
734 ALL-y += u-boot-dtb-tegra.bin
736 ALL-y += u-boot-nodtb-tegra.bin
741 LDFLAGS_u-boot += -T u-boot.lds $(LDFLAGS_FINAL)
742 ifneq ($(CONFIG_SYS_TEXT_BASE),)
743 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
749 dtbs dts/dt.dtb: checkdtc u-boot
750 $(Q)$(MAKE) $(build)=dts dtbs
752 u-boot-dtb.bin: u-boot.bin dts/dt.dtb
756 $(OBJCOPY) $(OBJCOPYFLAGS) -O ihex $< $@
759 $(OBJCOPY) $(OBJCOPYFLAGS) -O srec $< $@
762 $(OBJCOPY) $(OBJCOPYFLAGS) -O binary $< $@
763 $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
768 $(LDR) -T $(CONFIG_BFIN_CPU) -c $@ $< $(LDR_FLAGS)
771 u-boot.ldr.hex: u-boot.ldr
772 $(OBJCOPY) $(OBJCOPYFLAGS) -O ihex $< $@ -I binary
774 u-boot.ldr.srec: u-boot.ldr
775 $(OBJCOPY) $(OBJCOPYFLAGS) -O srec $< $@ -I binary
778 # U-Boot entry point, needed for booting of full-blown U-Boot
779 # from the SPL U-Boot version.
781 ifndef CONFIG_SYS_UBOOT_START
782 CONFIG_SYS_UBOOT_START := 0
785 u-boot.img: u-boot.bin
786 tools/mkimage -A $(ARCH) -T firmware -C none \
787 -O u-boot -a $(CONFIG_SYS_TEXT_BASE) \
788 -e $(CONFIG_SYS_UBOOT_START) \
789 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" \
792 u-boot.imx: u-boot.bin
793 $(Q)$(MAKE) $(build)=arch/arm/imx-common $(objtree)/$@
795 u-boot.kwb: u-boot.bin
796 tools/mkimage -n $(CONFIG_SYS_KWD_CONFIG) -T kwbimage \
797 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) -d $< $@
799 u-boot.pbl: u-boot.bin
800 tools/mkimage -n $(CONFIG_SYS_FSL_PBL_RCW) \
801 -R $(CONFIG_SYS_FSL_PBL_PBI) -T pblimage \
804 u-boot.sha1: u-boot.bin
805 tools/ubsha1 u-boot.bin
808 $(OBJDUMP) -d $< > $@
810 # $@ is output, $(1) and $(2) are inputs, $(3) is padded intermediate,
813 $(OBJCOPY) $(OBJCOPYFLAGS) --pad-to=$(4) -I binary -O binary \
815 cat $(3) $(2) > $@; \
819 SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
821 SPL_PAYLOAD := u-boot.bin
824 u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD)
825 $(call SPL_PAD_APPEND,$<,$(SPL_PAYLOAD),spl/u-boot-spl-pad.bin,$(CONFIG_SPL_PAD_TO))
827 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin
828 $(call SPL_PAD_APPEND,$<,u-boot.bin,tpl/u-boot-tpl-pad.bin,$(CONFIG_TPL_PAD_TO))
830 u-boot-with-spl.imx u-boot-with-nand-spl.imx: spl/u-boot-spl.bin u-boot.bin
831 $(Q)$(MAKE) $(build)=arch/arm/imx-common $(objtree)/$@
833 u-boot.ubl: u-boot-with-spl.bin
834 tools/mkimage -n $(UBL_CONFIG) -T ublimage \
835 -e $(CONFIG_SYS_TEXT_BASE) -d $< u-boot.ubl
837 u-boot.ais: spl/u-boot-spl.bin u-boot.img
838 tools/mkimage -s -n $(if $(CONFIG_AIS_CONFIG_FILE),$(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
840 -e $(CONFIG_SPL_TEXT_BASE) \
841 -d spl/u-boot-spl.bin \
843 $(OBJCOPY) $(OBJCOPYFLAGS) -I binary \
844 --pad-to=$(CONFIG_SPL_MAX_SIZE) -O binary \
845 spl/u-boot-spl.ais spl/u-boot-spl-pad.ais
846 cat spl/u-boot-spl-pad.ais u-boot.img > u-boot.ais
849 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
850 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs $(objtree)/u-boot.sb
852 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
853 # Both images are created using mkimage (crc etc), so that the ROM
854 # bootloader can check its integrity. Padding needs to be done to the
855 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
856 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
857 # The resulting image containing both U-Boot images is called u-boot.spr
858 u-boot.spr: u-boot.img spl/u-boot-spl.bin
859 tools/mkimage -A $(ARCH) -T firmware -C none \
860 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER \
861 -d spl/u-boot-spl.bin $@
862 $(OBJCOPY) -I binary -O binary \
863 --pad-to=$(CONFIG_SPL_PAD_TO) --gap-fill=0xff $@
866 ifneq ($(CONFIG_TEGRA),)
867 u-boot-nodtb-tegra.bin: spl/u-boot-spl.bin u-boot.bin
868 $(OBJCOPY) $(OBJCOPYFLAGS) --pad-to=$(CONFIG_SYS_TEXT_BASE) -O binary spl/u-boot-spl spl/u-boot-spl-pad.bin
869 cat spl/u-boot-spl-pad.bin u-boot.bin > $@
870 rm spl/u-boot-spl-pad.bin
872 ifeq ($(CONFIG_OF_SEPARATE),y)
873 u-boot-dtb-tegra.bin: u-boot-nodtb-tegra.bin dts/dt.dtb
878 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img
879 cat spl/u-boot-spl.bin u-boot.img > $@
881 # PPC4xx needs the SPL at the end of the image, since the reset vector
882 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
883 # and need to introduce a new build target with the full blown U-Boot
884 # at the start padded up to the start of the SPL image. And then concat
885 # the SPL image to the end.
886 u-boot-img-spl-at-end.bin: spl/u-boot-spl.bin u-boot.img
887 $(OBJCOPY) -I binary -O binary --pad-to=$(CONFIG_UBOOT_PAD_TO) \
888 --gap-fill=0xff u-boot.img $@
889 cat spl/u-boot-spl.bin >> $@
891 # Create a new ELF from a raw binary file. This is useful for arm64
892 # where static relocation needs to be performed on the raw binary,
893 # but certain simulators only accept an ELF file (but don't do the
895 # FIXME refactor dts/Makefile to share target/arch detection
896 u-boot.elf: u-boot.bin
897 @$(OBJCOPY) -B aarch64 -I binary -O elf64-littleaarch64 \
899 @$(LD) u-boot-elf.o -o $@ \
900 --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
901 -Ttext=$(CONFIG_SYS_TEXT_BASE)
903 ifeq ($(CONFIG_SANDBOX),y)
905 $(CC) $(SYMS) -T u-boot.lds \
906 -Wl,--start-group $(u-boot-main) -Wl,--end-group \
907 $(PLATFORM_LIBS) -Wl,-Map -Wl,u-boot.map -o u-boot
910 $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) \
912 --start-group $(u-boot-main) --end-group $(PLATFORM_LIBS) \
913 -Map u-boot.map -o u-boot
916 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds
918 ifeq ($(CONFIG_KALLSYMS),y)
919 smap=`$(call SYSTEM_MAP,u-boot) | \
920 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
921 $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
922 -c $(srctree)/common/system_map.c -o common/system_map.o
923 $(GEN_UBOOT) common/system_map.o
926 # The actual objects are generated when descending,
927 # make sure no implicit rule kicks in
928 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
930 # Handle descending into subdirectories listed in $(vmlinux-dirs)
931 # Preset locale variables to speed up the build process. Limit locale
932 # tweaks to this spot to avoid wrong language settings when running
933 # make menuconfig etc.
934 # Error messages still appears in the original language
936 PHONY += $(u-boot-dirs)
937 $(u-boot-dirs): prepare scripts
938 $(Q)$(MAKE) $(build)=$@
941 # The "tools" are needed early
942 $(filter-out tools, $(u-boot-dirs)): tools
943 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
944 # is "yes"), so compile examples after U-Boot is compiled.
945 examples: $(filter-out examples, $(u-boot-dirs))
947 define filechk_uboot.release
948 echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
951 # Store (new) UBOOTRELEASE string in include/config/uboot.release
952 include/config/uboot.release: Makefile FORCE
953 $(call filechk,uboot.release)
956 # Things we need to do before we recursively start building the kernel
957 # or the modules are listed in "prepare".
958 # A multi level approach is used. prepareN is processed before prepareN-1.
959 # archprepare is used in arch Makefiles and when processed asm symlink,
960 # version.h and scripts_basic is processed / created.
962 # Listed in dependency order
963 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
965 # prepare3 is used to check if we are building in a separate output directory,
967 # 1) Check that make has not been executed in the kernel src $(srctree)
968 prepare3: include/config/uboot.release
969 ifneq ($(KBUILD_SRC),)
970 @$(kecho) ' Using $(srctree) as source for u-boot'
971 $(Q)if [ -f $(srctree)/include/config.mk ]; then \
972 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
973 echo >&2 " in the '$(srctree)' directory.";\
978 # prepare2 creates a makefile if using a separate output directory
979 prepare2: prepare3 outputmakefile
981 prepare1: prepare2 $(version_h) $(timestamp_h)
984 archprepare: prepare1 scripts_basic
986 prepare0: archprepare FORCE
987 $(Q)$(MAKE) $(build)=.
989 # All the preparing..
992 # Generate some files
993 # ---------------------------------------------------------------------------
995 define filechk_version.h
996 (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
997 echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
998 echo \#define CC_VERSION_STRING \"$$($(CC) --version | head -n 1)\"; \
999 echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; )
1002 define filechk_timestamp.h
1003 (LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1004 LC_ALL=C date +'#define U_BOOT_TIME "%T"')
1007 $(version_h): $(srctree)/Makefile FORCE
1008 $(call filechk,version.h)
1010 $(timestamp_h): $(srctree)/Makefile FORCE
1011 $(call filechk,timestamp.h)
1014 # Auto-generate the autoconf.mk file (which is included by all makefiles)
1016 # This target actually generates 2 files; autoconf.mk and autoconf.mk.dep.
1017 # the dep file is only include in this top level makefile to determine when
1018 # to regenerate the autoconf.mk file.
1020 quiet_cmd_autoconf_dep = GEN $@
1021 cmd_autoconf_dep = $(CC) -x c -DDO_DEPS_ONLY -M $(c_flags) \
1022 -MQ include/autoconf.mk $(srctree)/include/common.h > $@ || rm $@
1024 include/autoconf.mk.dep: include/config.h include/common.h
1025 $(call cmd,autoconf_dep)
1027 quiet_cmd_autoconf = GEN $@
1029 $(CPP) $(c_flags) -DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && \
1030 sed -n -f $(srctree)/tools/scripts/define2mk.sed $@.tmp > $@; \
1033 include/autoconf.mk: include/config.h
1034 $(call cmd,autoconf)
1036 # ---------------------------------------------------------------------------
1040 @echo '*** Warning: make $@ is unnecessary now.'
1042 # ---------------------------------------------------------------------------
1044 u-boot.lds: $(LDSCRIPT) prepare
1045 $(CPP) $(cpp_flags) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$< >$@
1048 $(Q)$(MAKE) $(build)=nand_spl/board/$(BOARDDIR) all
1050 u-boot-nand.bin: nand_spl u-boot.bin
1051 cat nand_spl/u-boot-spl-16k.bin u-boot.bin > u-boot-nand.bin
1053 spl/u-boot-spl.bin: tools prepare
1054 $(Q)$(MAKE) obj=spl -f $(srctree)/spl/Makefile all
1056 tpl/u-boot-tpl.bin: tools prepare
1057 $(Q)$(MAKE) obj=tpl -f $(srctree)/spl/Makefile all CONFIG_TPL_BUILD=y
1059 TAG_SUBDIRS := $(u-boot-dirs) include
1067 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1068 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1071 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1072 -name '*.[chS]' -print`
1075 etags -a -o $(obj)etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1076 -name '*.[chS]' -print`
1078 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1084 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1087 @$(call SYSTEM_MAP,$<) > $@
1090 @if test $(call cc-version) -lt 0404; then \
1091 echo -n '*** Your GCC does not produce working '; \
1092 echo 'binaries in THUMB mode.'; \
1093 echo '*** Your board is configured for THUMB mode.'; \
1097 # GCC 3.x is reported to have problems generating the type of relocation
1098 # that U-Boot wants.
1099 # See http://lists.denx.de/pipermail/u-boot/2012-September/135156.html
1101 @if test $(call cc-version) -lt 0400; then \
1102 echo -n '*** Your GCC is too old, please upgrade to GCC 4.x or newer'; \
1107 @if test $(call dtc-version) -lt 0104; then \
1108 echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
1112 #########################################################################
1114 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1115 # R_AARCH64_RELATIVE (64-bit).
1116 checkarmreloc: u-boot
1117 @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1118 grep R_A | sort -u`"; \
1119 if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1120 "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1121 echo "$< contains unexpected relocations: $$RELOC"; \
1126 $(Q)$(MAKE) $(build)=tools/$@
1128 tools-all: HOST_TOOLS_ALL=y
1129 tools-all: env tools ;
1133 git log --no-merges U-Boot-1_1_5.. | \
1134 unexpand -a | sed -e 's/\s\s*$$//' > $@
1136 include/license.h: tools/bin2header COPYING
1137 cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h
1138 #########################################################################
1141 # Cleaning is done on three levels.
1142 # make clean Delete most generated files
1143 # Leave enough to build external modules
1144 # make mrproper Delete the current configuration, and all generated files
1145 # make distclean Remove editor backup files, patch leftover files and the like
1147 # Directories & files removed with 'make clean'
1148 CLEAN_DIRS += $(MODVERDIR)
1149 CLEAN_FILES += u-boot.lds include/bmp_logo.h include/bmp_logo_data.h \
1150 board/*/config.tmp board/*/*/config.tmp \
1151 include/autoconf.mk* include/spl-autoconf.mk \
1152 include/tpl-autoconf.mk
1154 # Directories & files removed with 'make clobber'
1155 CLOBBER_DIRS += $(patsubst %,spl/%, $(filter-out Makefile, \
1156 $(shell ls -1 spl 2>/dev/null))) \
1158 CLOBBER_FILES += u-boot* MLO* SPL System.map nand_spl/u-boot*
1160 # Directories & files removed with 'make mrproper'
1161 MRPROPER_DIRS += include/config include/generated
1162 MRPROPER_FILES += .config .config.old \
1163 tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1164 include/config.h include/config.mk
1166 # clean - Delete most, but leave enough to build external modules
1168 clean: rm-dirs := $(CLEAN_DIRS)
1169 clean: rm-files := $(CLEAN_FILES)
1171 clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $f/Makefile),$f))
1173 clean-dirs := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
1175 PHONY += $(clean-dirs) clean archclean
1177 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1179 # TODO: Do not use *.cfgtmp
1180 clean: $(clean-dirs)
1183 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1184 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1185 -o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
1186 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1187 -o -name '*.symtypes' -o -name 'modules.order' \
1188 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1189 -o -name '*.gcno' \) -type f -print | xargs rm -f
1190 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1191 -path './nand_spl/*' -type l -print | xargs rm -f
1195 clobber: rm-dirs := $(CLOBBER_DIRS)
1196 clobber: rm-files := $(CLOBBER_FILES)
1204 # mrproper - Delete all generated files, including .config
1206 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1207 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1208 mrproper-dirs := $(addprefix _mrproper_,scripts)
1210 PHONY += $(mrproper-dirs) mrproper archmrproper
1212 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1214 mrproper: clobber $(mrproper-dirs)
1217 @rm -f arch/*/include/asm/arch arch/*/include/asm/proc
1224 @find $(srctree) $(RCS_FIND_IGNORE) \
1225 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1226 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1228 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
1229 -type f -print | xargs rm -f
1232 F=`basename $(TOPDIR)` ; cd .. ; \
1233 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1236 # Documentation targets
1237 # ---------------------------------------------------------------------------
1238 %docs: scripts_basic FORCE
1239 $(Q)$(MAKE) $(build)=scripts build_docproc
1240 $(Q)$(MAKE) $(build)=doc/DocBook $@
1243 PHONY += prepare scripts
1247 endif #ifeq ($(config-targets),1)
1248 endif #ifeq ($(mixed-targets),1)
1250 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1251 cmd_rmdirs = rm -rf $(rm-dirs)
1253 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1254 cmd_rmfiles = rm -f $(rm-files)
1256 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1258 # $(Q)$(MAKE) $(clean)=dir
1259 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1261 endif # skip-makefile
1266 # Declare the contents of the .PHONY variable as phony. We keep that
1267 # information in a variable so we can use it in if_changed and friends.