xref: /openbmc/u-boot/Makefile (revision dfb0a70a)
1# SPDX-License-Identifier: GPL-2.0+
2
3VERSION = 2019
4PATCHLEVEL = 01
5SUBLEVEL =
6EXTRAVERSION = -rc1
7NAME =
8
9# *DOCUMENTATION*
10# To see a list of typical targets execute "make help"
11# More info can be located in ./README
12# Comments in this file are targeted only to the developer, do not
13# expect to learn how to build the kernel reading this file.
14
15# o Do not use make's built-in rules and variables
16#   (this increases performance and avoids hard-to-debug behaviour);
17# o Look for make include files relative to root of kernel src
18MAKEFLAGS += -rR --include-dir=$(CURDIR)
19
20# Avoid funny character set dependencies
21unexport LC_ALL
22LC_COLLATE=C
23LC_NUMERIC=C
24export LC_COLLATE LC_NUMERIC
25
26# Avoid interference with shell env settings
27unexport GREP_OPTIONS
28
29# We are using a recursive build, so we need to do a little thinking
30# to get the ordering right.
31#
32# Most importantly: sub-Makefiles should only ever modify files in
33# their own directory. If in some directory we have a dependency on
34# a file in another dir (which doesn't happen often, but it's often
35# unavoidable when linking the built-in.o targets which finally
36# turn into vmlinux), we will call a sub make in that other dir, and
37# after that we are sure that everything which is in that other dir
38# is now up to date.
39#
40# The only cases where we need to modify files which have global
41# effects are thus separated out and done before the recursive
42# descending is started. They are now explicitly listed as the
43# prepare rule.
44
45# Beautify output
46# ---------------------------------------------------------------------------
47#
48# Normally, we echo the whole command before executing it. By making
49# that echo $($(quiet)$(cmd)), we now have the possibility to set
50# $(quiet) to choose other forms of output instead, e.g.
51#
52#         quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
53#         cmd_cc_o_c       = $(CC) $(c_flags) -c -o $@ $<
54#
55# If $(quiet) is empty, the whole command will be printed.
56# If it is set to "quiet_", only the short version will be printed.
57# If it is set to "silent_", nothing will be printed at all, since
58# the variable $(silent_cmd_cc_o_c) doesn't exist.
59#
60# A simple variant is to prefix commands with $(Q) - that's useful
61# for commands that shall be hidden in non-verbose mode.
62#
63#	$(Q)ln $@ :<
64#
65# If KBUILD_VERBOSE equals 0 then the above command will be hidden.
66# If KBUILD_VERBOSE equals 1 then the above command is displayed.
67#
68# To put more focus on warnings, be less verbose as default
69# Use 'make V=1' to see the full commands
70
71ifeq ("$(origin V)", "command line")
72  KBUILD_VERBOSE = $(V)
73endif
74ifndef KBUILD_VERBOSE
75  KBUILD_VERBOSE = 0
76endif
77
78ifeq ($(KBUILD_VERBOSE),1)
79  quiet =
80  Q =
81else
82  quiet=quiet_
83  Q = @
84endif
85
86# If the user is running make -s (silent mode), suppress echoing of
87# commands
88
89ifneq ($(filter 4.%,$(MAKE_VERSION)),)	# make-4
90ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
91  quiet=silent_
92endif
93else					# make-3.8x
94ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
95  quiet=silent_
96endif
97endif
98
99export quiet Q KBUILD_VERBOSE
100
101# kbuild supports saving output files in a separate directory.
102# To locate output files in a separate directory two syntaxes are supported.
103# In both cases the working directory must be the root of the kernel src.
104# 1) O=
105# Use "make O=dir/to/store/output/files/"
106#
107# 2) Set KBUILD_OUTPUT
108# Set the environment variable KBUILD_OUTPUT to point to the directory
109# where the output files shall be placed.
110# export KBUILD_OUTPUT=dir/to/store/output/files/
111# make
112#
113# The O= assignment takes precedence over the KBUILD_OUTPUT environment
114# variable.
115
116# KBUILD_SRC is set on invocation of make in OBJ directory
117# KBUILD_SRC is not intended to be used by the regular user (for now)
118ifeq ($(KBUILD_SRC),)
119
120# OK, Make called in directory where kernel src resides
121# Do we want to locate output files in a separate directory?
122ifeq ("$(origin O)", "command line")
123  KBUILD_OUTPUT := $(O)
124endif
125
126# That's our default target when none is given on the command line
127PHONY := _all
128_all:
129
130# Cancel implicit rules on top Makefile
131$(CURDIR)/Makefile Makefile: ;
132
133ifneq ($(KBUILD_OUTPUT),)
134# Invoke a second make in the output directory, passing relevant variables
135# check that the output directory actually exists
136saved-output := $(KBUILD_OUTPUT)
137KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
138								&& /bin/pwd)
139$(if $(KBUILD_OUTPUT),, \
140     $(error failed to create output directory "$(saved-output)"))
141
142PHONY += $(MAKECMDGOALS) sub-make
143
144$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
145	@:
146
147sub-make: FORCE
148	$(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
149	-f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS))
150
151# Leave processing to above invocation of make
152skip-makefile := 1
153endif # ifneq ($(KBUILD_OUTPUT),)
154endif # ifeq ($(KBUILD_SRC),)
155
156# We process the rest of the Makefile if this is the final invocation of make
157ifeq ($(skip-makefile),)
158
159# Do not print "Entering directory ...",
160# but we want to display it when entering to the output directory
161# so that IDEs/editors are able to understand relative filenames.
162MAKEFLAGS += --no-print-directory
163
164# Call a source code checker (by default, "sparse") as part of the
165# C compilation.
166#
167# Use 'make C=1' to enable checking of only re-compiled files.
168# Use 'make C=2' to enable checking of *all* source files, regardless
169# of whether they are re-compiled or not.
170#
171# See the file "Documentation/sparse.txt" for more details, including
172# where to get the "sparse" utility.
173
174ifeq ("$(origin C)", "command line")
175  KBUILD_CHECKSRC = $(C)
176endif
177ifndef KBUILD_CHECKSRC
178  KBUILD_CHECKSRC = 0
179endif
180
181# Use make M=dir to specify directory of external module to build
182# Old syntax make ... SUBDIRS=$PWD is still supported
183# Setting the environment variable KBUILD_EXTMOD take precedence
184ifdef SUBDIRS
185  KBUILD_EXTMOD ?= $(SUBDIRS)
186endif
187
188ifeq ("$(origin M)", "command line")
189  KBUILD_EXTMOD := $(M)
190endif
191
192# If building an external module we do not care about the all: rule
193# but instead _all depend on modules
194PHONY += all
195ifeq ($(KBUILD_EXTMOD),)
196_all: all
197else
198_all: modules
199endif
200
201ifeq ($(KBUILD_SRC),)
202        # building in the source tree
203        srctree := .
204else
205        ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
206                # building in a subdirectory of the source tree
207                srctree := ..
208        else
209                srctree := $(KBUILD_SRC)
210        endif
211endif
212objtree		:= .
213src		:= $(srctree)
214obj		:= $(objtree)
215
216VPATH		:= $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
217
218export srctree objtree VPATH
219
220# Make sure CDPATH settings don't interfere
221unexport CDPATH
222
223#########################################################################
224
225HOSTARCH := $(shell uname -m | \
226	sed -e s/i.86/x86/ \
227	    -e s/sun4u/sparc64/ \
228	    -e s/arm.*/arm/ \
229	    -e s/sa110/arm/ \
230	    -e s/ppc64/powerpc/ \
231	    -e s/ppc/powerpc/ \
232	    -e s/macppc/powerpc/\
233	    -e s/sh.*/sh/)
234
235HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
236	    sed -e 's/\(cygwin\).*/cygwin/')
237
238export	HOSTARCH HOSTOS
239
240#########################################################################
241
242# set default to nothing for native builds
243ifeq ($(HOSTARCH),$(ARCH))
244CROSS_COMPILE ?=
245endif
246
247KCONFIG_CONFIG	?= .config
248export KCONFIG_CONFIG
249
250# SHELL used by kbuild
251CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
252	  else if [ -x /bin/bash ]; then echo /bin/bash; \
253	  else echo sh; fi ; fi)
254
255HOSTCC       = cc
256HOSTCXX      = c++
257HOSTCFLAGS   = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \
258		$(if $(CONFIG_TOOLS_DEBUG),-g)
259HOSTCXXFLAGS = -O2
260
261# With the move to GCC 6, we have implicitly upgraded our language
262# standard to GNU11 (see https://gcc.gnu.org/gcc-5/porting_to.html).
263# Some Linux distributions (including RHEL7, SLES13, Debian 8) still
264# have older compilers as their default, so we make it explicit for
265# these that our host tools are GNU11 (i.e. C11 w/ GNU extensions).
266CSTD_FLAG := -std=gnu11
267ifeq ($(HOSTOS),linux)
268HOSTCFLAGS += $(CSTD_FLAG)
269endif
270
271ifeq ($(HOSTOS),cygwin)
272HOSTCFLAGS	+= -ansi
273endif
274
275# Mac OS X / Darwin's C preprocessor is Apple specific.  It
276# generates numerous errors and warnings.  We want to bypass it
277# and use GNU C's cpp.	To do this we pass the -traditional-cpp
278# option to the compiler.  Note that the -traditional-cpp flag
279# DOES NOT have the same semantics as GNU C's flag, all it does
280# is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
281#
282# Apple's linker is similar, thanks to the new 2 stage linking
283# multiple symbol definitions are treated as errors, hence the
284# -multiply_defined suppress option to turn off this error.
285#
286ifeq ($(HOSTOS),darwin)
287# get major and minor product version (e.g. '10' and '6' for Snow Leopard)
288DARWIN_MAJOR_VERSION	= $(shell sw_vers -productVersion | cut -f 1 -d '.')
289DARWIN_MINOR_VERSION	= $(shell sw_vers -productVersion | cut -f 2 -d '.')
290
291os_x_before	= $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
292	$(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
293
294# Snow Leopards build environment has no longer restrictions as described above
295HOSTCC       = $(call os_x_before, 10, 5, "cc", "gcc")
296HOSTCFLAGS  += $(call os_x_before, 10, 4, "-traditional-cpp")
297HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
298
299# since Lion (10.7) ASLR is on by default, but we use linker generated lists
300# in some host tools which is a problem then ... so disable ASLR for these
301# tools
302HOSTLDFLAGS += $(call os_x_before, 10, 7, "", "-Xlinker -no_pie")
303endif
304
305# Decide whether to build built-in, modular, or both.
306# Normally, just do built-in.
307
308KBUILD_MODULES :=
309KBUILD_BUILTIN := 1
310
311# If we have only "make modules", don't compile built-in objects.
312# When we're building modules with modversions, we need to consider
313# the built-in objects during the descend as well, in order to
314# make sure the checksums are up to date before we record them.
315
316ifeq ($(MAKECMDGOALS),modules)
317  KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
318endif
319
320# If we have "make <whatever> modules", compile modules
321# in addition to whatever we do anyway.
322# Just "make" or "make all" shall build modules as well
323
324# U-Boot does not need modules
325#ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
326#  KBUILD_MODULES := 1
327#endif
328
329#ifeq ($(MAKECMDGOALS),)
330#  KBUILD_MODULES := 1
331#endif
332
333export KBUILD_MODULES KBUILD_BUILTIN
334export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
335
336# We need some generic definitions (do not try to remake the file).
337scripts/Kbuild.include: ;
338include scripts/Kbuild.include
339
340# Make variables (CC, etc...)
341
342AS		= $(CROSS_COMPILE)as
343# Always use GNU ld
344ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
345LD		= $(CROSS_COMPILE)ld.bfd
346else
347LD		= $(CROSS_COMPILE)ld
348endif
349CC		= $(CROSS_COMPILE)gcc
350CPP		= $(CC) -E
351AR		= $(CROSS_COMPILE)ar
352NM		= $(CROSS_COMPILE)nm
353LDR		= $(CROSS_COMPILE)ldr
354STRIP		= $(CROSS_COMPILE)strip
355OBJCOPY		= $(CROSS_COMPILE)objcopy
356OBJDUMP		= $(CROSS_COMPILE)objdump
357LEX		= flex
358YACC		= bison
359AWK		= awk
360PERL		= perl
361PYTHON		?= python
362PYTHON2		= python2
363PYTHON3		= python3
364DTC		?= $(objtree)/scripts/dtc/dtc
365CHECK		= sparse
366
367CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
368		  -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
369
370KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__
371
372KBUILD_CFLAGS   := -Wall -Wstrict-prototypes \
373		   -Wno-format-security \
374		   -fno-builtin -ffreestanding $(CSTD_FLAG)
375KBUILD_CFLAGS	+= -fshort-wchar -fno-strict-aliasing
376KBUILD_AFLAGS   := -D__ASSEMBLY__
377
378# Don't generate position independent code
379KBUILD_CFLAGS	+= $(call cc-option,-fno-PIE)
380KBUILD_AFLAGS	+= $(call cc-option,-fno-PIE)
381
382# Read UBOOTRELEASE from include/config/uboot.release (if it exists)
383UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
384UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
385
386export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
387export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
388export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
389export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
390export MAKE LEX YACC AWK PERL PYTHON PYTHON2 PYTHON3
391export HOSTCXX HOSTCXXFLAGS CHECK CHECKFLAGS DTC DTC_FLAGS
392
393export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
394export KBUILD_CFLAGS KBUILD_AFLAGS
395
396# When compiling out-of-tree modules, put MODVERDIR in the module
397# tree rather than in the kernel tree. The kernel tree might
398# even be read-only.
399export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
400
401# Files to ignore in find ... statements
402
403export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o    \
404			  -name CVS -o -name .pc -o -name .hg -o -name .git \) \
405			  -prune -o
406export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
407			 --exclude CVS --exclude .pc --exclude .hg --exclude .git
408
409# ===========================================================================
410# Rules shared between *config targets and build targets
411
412# Basic helpers built in scripts/
413PHONY += scripts_basic
414scripts_basic:
415	$(Q)$(MAKE) $(build)=scripts/basic
416	$(Q)rm -f .tmp_quiet_recordmcount
417
418# To avoid any implicit rule to kick in, define an empty command.
419scripts/basic/%: scripts_basic ;
420
421PHONY += outputmakefile
422# outputmakefile generates a Makefile in the output directory, if using a
423# separate output directory. This allows convenient use of make in the
424# output directory.
425outputmakefile:
426ifneq ($(KBUILD_SRC),)
427	$(Q)ln -fsn $(srctree) source
428	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
429	    $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
430endif
431
432# To make sure we do not include .config for any of the *config targets
433# catch them early, and hand them over to scripts/kconfig/Makefile
434# It is allowed to specify more targets when calling make, including
435# mixing *config targets and build targets.
436# For example 'make oldconfig all'.
437# Detect when mixed targets is specified, and make a second invocation
438# of make so .config is not included in this case either (for *config).
439
440version_h := include/generated/version_autogenerated.h
441timestamp_h := include/generated/timestamp_autogenerated.h
442defaultenv_h := include/generated/defaultenv_autogenerated.h
443
444no-dot-config-targets := clean clobber mrproper distclean \
445			 help %docs check% coccicheck \
446			 ubootversion backup tests check qcheck
447
448config-targets := 0
449mixed-targets  := 0
450dot-config     := 1
451
452ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
453	ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
454		dot-config := 0
455	endif
456endif
457
458ifeq ($(KBUILD_EXTMOD),)
459        ifneq ($(filter config %config,$(MAKECMDGOALS)),)
460                config-targets := 1
461                ifneq ($(words $(MAKECMDGOALS)),1)
462                        mixed-targets := 1
463                endif
464        endif
465endif
466
467ifeq ($(mixed-targets),1)
468# ===========================================================================
469# We're called with mixed targets (*config and build targets).
470# Handle them one by one.
471
472PHONY += $(MAKECMDGOALS) __build_one_by_one
473
474$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
475	@:
476
477__build_one_by_one:
478	$(Q)set -e; \
479	for i in $(MAKECMDGOALS); do \
480		$(MAKE) -f $(srctree)/Makefile $$i; \
481	done
482
483else
484ifeq ($(config-targets),1)
485# ===========================================================================
486# *config targets only - make sure prerequisites are updated, and descend
487# in scripts/kconfig to make the *config target
488
489KBUILD_DEFCONFIG := sandbox_defconfig
490export KBUILD_DEFCONFIG KBUILD_KCONFIG
491
492config: scripts_basic outputmakefile FORCE
493	$(Q)$(MAKE) $(build)=scripts/kconfig $@
494
495%config: scripts_basic outputmakefile FORCE
496	$(Q)$(MAKE) $(build)=scripts/kconfig $@
497
498else
499# ===========================================================================
500# Build targets only - this includes vmlinux, arch specific targets, clean
501# targets and others. In general all targets except *config targets.
502
503# Additional helpers built in scripts/
504# Carefully list dependencies so we do not try to build scripts twice
505# in parallel
506PHONY += scripts
507scripts: scripts_basic include/config/auto.conf
508	$(Q)$(MAKE) $(build)=$(@)
509
510ifeq ($(dot-config),1)
511# Read in config
512-include include/config/auto.conf
513
514# Read in dependencies to all Kconfig* files, make sure to run
515# oldconfig if changes are detected.
516-include include/config/auto.conf.cmd
517
518# To avoid any implicit rule to kick in, define an empty command
519$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
520
521# If .config is newer than include/config/auto.conf, someone tinkered
522# with it and forgot to run make oldconfig.
523# if auto.conf.cmd is missing then we are probably in a cleaned tree so
524# we execute the config step to be sure to catch updated Kconfig files
525include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
526	$(Q)$(MAKE) -f $(srctree)/Makefile syncconfig
527	@# If the following part fails, include/config/auto.conf should be
528	@# deleted so "make silentoldconfig" will be re-run on the next build.
529	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf || \
530		{ rm -f include/config/auto.conf; false; }
531	@# include/config.h has been updated after "make silentoldconfig".
532	@# We need to touch include/config/auto.conf so it gets newer
533	@# than include/config.h.
534	@# Otherwise, 'make silentoldconfig' would be invoked twice.
535	$(Q)touch include/config/auto.conf
536
537u-boot.cfg spl/u-boot.cfg tpl/u-boot.cfg: include/config.h FORCE
538	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf $(@)
539
540-include include/autoconf.mk
541-include include/autoconf.mk.dep
542
543# We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf
544# is up-to-date. When we switch to a different board configuration, old CONFIG
545# macros are still remaining in include/config/auto.conf. Without the following
546# gimmick, wrong config.mk would be included leading nasty warnings/errors.
547ifneq ($(wildcard $(KCONFIG_CONFIG)),)
548ifneq ($(wildcard include/config/auto.conf),)
549autoconf_is_old := $(shell find . -path ./$(KCONFIG_CONFIG) -newer \
550						include/config/auto.conf)
551ifeq ($(autoconf_is_old),)
552include config.mk
553include arch/$(ARCH)/Makefile
554endif
555endif
556endif
557
558# These are set by the arch-specific config.mk. Make sure they are exported
559# so they can be used when building an EFI application.
560export EFI_LDS		# Filename of EFI link script in arch/$(ARCH)/lib
561export EFI_CRT0		# Filename of EFI CRT0 in arch/$(ARCH)/lib
562export EFI_RELOC	# Filename of EFU relocation code in arch/$(ARCH)/lib
563export CFLAGS_EFI	# Compiler flags to add when building EFI app
564export CFLAGS_NON_EFI	# Compiler flags to remove when building EFI app
565export EFI_TARGET	# binutils target if EFI is natively supported
566
567# If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
568# that (or fail if absent).  Otherwise, search for a linker script in a
569# standard location.
570
571ifndef LDSCRIPT
572	#LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
573	ifdef CONFIG_SYS_LDSCRIPT
574		# need to strip off double quotes
575		LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
576	endif
577endif
578
579# If there is no specified link script, we look in a number of places for it
580ifndef LDSCRIPT
581	ifeq ($(wildcard $(LDSCRIPT)),)
582		LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
583	endif
584	ifeq ($(wildcard $(LDSCRIPT)),)
585		LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
586	endif
587	ifeq ($(wildcard $(LDSCRIPT)),)
588		LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
589	endif
590endif
591
592else
593# Dummy target needed, because used as prerequisite
594include/config/auto.conf: ;
595endif # $(dot-config)
596
597#
598# Xtensa linker script cannot be preprocessed with -ansi because of
599# preprocessor operations on strings that don't make C identifiers.
600#
601ifeq ($(CONFIG_XTENSA),)
602LDPPFLAGS	+= -ansi
603endif
604
605ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
606KBUILD_CFLAGS	+= -Os
607else
608KBUILD_CFLAGS	+= -O2
609endif
610
611KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
612KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks)
613
614# change __FILE__ to the relative path from the srctree
615KBUILD_CFLAGS	+= $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
616
617KBUILD_CFLAGS	+= -g
618# $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
619# option to the assembler.
620KBUILD_AFLAGS	+= -g
621
622# Report stack usage if supported
623# ARC tools based on GCC 7.1 has an issue with stack usage
624# with naked functions, see commit message for more details
625ifndef CONFIG_ARC
626ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
627	KBUILD_CFLAGS += -fstack-usage
628endif
629endif
630
631KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
632ifeq ($(cc-name),clang)
633KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
634KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
635KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
636KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
637KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
638endif
639
640# turn jbsr into jsr for m68k
641ifeq ($(ARCH),m68k)
642ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
643KBUILD_AFLAGS += -Wa,-gstabs,-S
644endif
645endif
646
647# Prohibit date/time macros, which would make the build non-deterministic
648KBUILD_CFLAGS   += $(call cc-option,-Werror=date-time)
649
650include scripts/Makefile.extrawarn
651
652# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
653KBUILD_CPPFLAGS += $(KCPPFLAGS)
654KBUILD_AFLAGS += $(KAFLAGS)
655KBUILD_CFLAGS += $(KCFLAGS)
656
657# Use UBOOTINCLUDE when you must reference the include/ directory.
658# Needed to be compatible with the O= option
659UBOOTINCLUDE    := \
660		-Iinclude \
661		$(if $(KBUILD_SRC), -I$(srctree)/include) \
662		$(if $(CONFIG_$(SPL_)SYS_THUMB_BUILD), \
663			$(if $(CONFIG_HAS_THUMB2),, \
664				-I$(srctree)/arch/$(ARCH)/thumb1/include),) \
665		-I$(srctree)/arch/$(ARCH)/include \
666		-include $(srctree)/include/linux/kconfig.h
667
668NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
669CHECKFLAGS     += $(NOSTDINC_FLAGS)
670
671# FIX ME
672cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
673							$(NOSTDINC_FLAGS)
674c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
675
676#########################################################################
677# U-Boot objects....order is important (i.e. start must be first)
678
679HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
680
681libs-y += lib/
682libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
683libs-$(CONFIG_OF_EMBED) += dts/
684libs-y += fs/
685libs-y += net/
686libs-y += disk/
687libs-y += drivers/
688libs-y += drivers/dma/
689libs-y += drivers/gpio/
690libs-y += drivers/i2c/
691libs-y += drivers/mtd/
692libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/raw/
693libs-y += drivers/mtd/onenand/
694libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
695libs-y += drivers/mtd/spi/
696libs-y += drivers/net/
697libs-y += drivers/net/phy/
698libs-y += drivers/pci/
699libs-y += drivers/power/ \
700	drivers/power/domain/ \
701	drivers/power/fuel_gauge/ \
702	drivers/power/mfd/ \
703	drivers/power/pmic/ \
704	drivers/power/battery/ \
705	drivers/power/regulator/
706libs-y += drivers/spi/
707libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
708libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
709libs-$(CONFIG_SYS_FSL_MMDC) += drivers/ddr/fsl/
710libs-$(CONFIG_ALTERA_SDRAM) += drivers/ddr/altera/
711libs-y += drivers/serial/
712libs-y += drivers/usb/dwc3/
713libs-y += drivers/usb/common/
714libs-y += drivers/usb/emul/
715libs-y += drivers/usb/eth/
716libs-y += drivers/usb/gadget/
717libs-y += drivers/usb/gadget/udc/
718libs-y += drivers/usb/host/
719libs-y += drivers/usb/musb/
720libs-y += drivers/usb/musb-new/
721libs-y += drivers/usb/phy/
722libs-y += drivers/usb/ulpi/
723libs-y += cmd/
724libs-y += common/
725libs-y += env/
726libs-$(CONFIG_API) += api/
727libs-$(CONFIG_HAS_POST) += post/
728libs-y += test/
729libs-y += test/dm/
730libs-$(CONFIG_UT_ENV) += test/env/
731libs-$(CONFIG_UT_OVERLAY) += test/overlay/
732
733libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
734
735libs-y := $(sort $(libs-y))
736
737u-boot-dirs	:= $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
738
739u-boot-alldirs	:= $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
740
741libs-y		:= $(patsubst %/, %/built-in.o, $(libs-y))
742
743u-boot-init := $(head-y)
744u-boot-main := $(libs-y)
745
746
747# Add GCC lib
748ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
749PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
750else
751PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
752endif
753PLATFORM_LIBS += $(PLATFORM_LIBGCC)
754
755ifdef CONFIG_CC_COVERAGE
756KBUILD_CFLAGS += --coverage
757PLATFORM_LIBGCC += -lgcov
758endif
759
760export PLATFORM_LIBS
761export PLATFORM_LIBGCC
762
763# Special flags for CPP when processing the linker script.
764# Pass the version down so we can handle backwards compatibility
765# on the fly.
766LDPPFLAGS += \
767	-include $(srctree)/include/u-boot/u-boot.lds.h \
768	-DCPUDIR=$(CPUDIR) \
769	$(shell $(LD) --version | \
770	  sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
771
772#########################################################################
773#########################################################################
774
775ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
776BOARD_SIZE_CHECK = \
777	@actual=`wc -c $@ | awk '{print $$1}'`; \
778	limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
779	if test $$actual -gt $$limit; then \
780		echo "$@ exceeds file size limit:" >&2 ; \
781		echo "  limit:  $$limit bytes" >&2 ; \
782		echo "  actual: $$actual bytes" >&2 ; \
783		echo "  excess: $$((actual - limit)) bytes" >&2; \
784		exit 1; \
785	fi
786else
787BOARD_SIZE_CHECK =
788endif
789
790# Statically apply RELA-style relocations (currently arm64 only)
791# This is useful for arm64 where static relocation needs to be performed on
792# the raw binary, but certain simulators only accept an ELF file (but don't
793# do the relocation).
794ifneq ($(CONFIG_STATIC_RELA),)
795# $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
796DO_STATIC_RELA = \
797	start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
798	end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
799	tools/relocate-rela $(2) $(3) $$start $$end
800else
801DO_STATIC_RELA =
802endif
803
804# Always append ALL so that arch config.mk's can add custom ones
805ALL-y += u-boot.srec u-boot.bin u-boot.sym System.map binary_size_check
806
807ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
808ifeq ($(CONFIG_SPL_FSL_PBL),y)
809ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
810else
811ifneq ($(CONFIG_SECURE_BOOT), y)
812# For Secure Boot The Image needs to be signed and Header must also
813# be included. So The image has to be built explicitly
814ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
815endif
816endif
817ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
818ifeq ($(CONFIG_MX6)$(CONFIG_SECURE_BOOT), yy)
819ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img
820else
821ifeq ($(CONFIG_MX7)$(CONFIG_SECURE_BOOT), yy)
822ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img
823else
824ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
825endif
826endif
827ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
828ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb
829ifeq ($(CONFIG_SPL_FRAMEWORK),y)
830ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
831endif
832ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
833ifneq ($(CONFIG_SPL_TARGET),)
834ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
835endif
836ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
837ALL-$(CONFIG_EFI_APP) += u-boot-app.efi
838ALL-$(CONFIG_EFI_STUB) += u-boot-payload.efi
839
840ifneq ($(BUILD_ROM)$(CONFIG_BUILD_ROM),)
841ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
842endif
843
844# Build a combined spl + u-boot image for sunxi
845ifeq ($(CONFIG_ARCH_SUNXI)$(CONFIG_SPL),yy)
846ALL-y += u-boot-sunxi-with-spl.bin
847endif
848
849# enable combined SPL/u-boot/dtb rules for tegra
850ifeq ($(CONFIG_TEGRA)$(CONFIG_SPL),yy)
851ALL-y += u-boot-tegra.bin u-boot-nodtb-tegra.bin
852ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb-tegra.bin
853endif
854
855ALL-$(CONFIG_ARCH_MEDIATEK) += u-boot-mtk.bin
856
857# Add optional build target if defined in board/cpu/soc headers
858ifneq ($(CONFIG_BUILD_TARGET),)
859ALL-y += $(CONFIG_BUILD_TARGET:"%"=%)
860endif
861
862ifneq ($(CONFIG_SYS_INIT_SP_BSS_OFFSET),)
863ALL-y += init_sp_bss_offset_check
864endif
865
866ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
867ALL-y += u-boot-with-dtb.bin
868endif
869
870LDFLAGS_u-boot += $(LDFLAGS_FINAL)
871
872# Avoid 'Not enough room for program headers' error on binutils 2.28 onwards.
873LDFLAGS_u-boot += $(call ld-option, --no-dynamic-linker)
874
875ifeq ($(CONFIG_ARC)$(CONFIG_NIOS2)$(CONFIG_X86)$(CONFIG_XTENSA),)
876LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
877endif
878
879# Normally we fill empty space with 0xff
880quiet_cmd_objcopy = OBJCOPY $@
881cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \
882	$(OBJCOPYFLAGS_$(@F)) $< $@
883
884# Provide a version which does not do this, for use by EFI
885quiet_cmd_zobjcopy = OBJCOPY $@
886cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
887
888quiet_cmd_efipayload = OBJCOPY $@
889cmd_efipayload = $(OBJCOPY) -I binary -O $(EFIPAYLOAD_BFDTARGET) -B $(EFIPAYLOAD_BFDARCH) $< $@
890
891MKIMAGEOUTPUT ?= /dev/null
892
893quiet_cmd_mkimage = MKIMAGE $@
894cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
895	>$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
896
897quiet_cmd_mkfitimage = MKIMAGE $@
898cmd_mkfitimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -f $(U_BOOT_ITS) -E $@ \
899	>$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
900
901quiet_cmd_cat = CAT     $@
902cmd_cat = cat $(filter-out $(PHONY), $^) > $@
903
904append = cat $(filter-out $< $(PHONY), $^) >> $@
905
906quiet_cmd_pad_cat = CAT     $@
907cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
908
909cfg: u-boot.cfg
910
911quiet_cmd_cfgcheck = CFGCHK  $2
912cmd_cfgcheck = $(srctree)/scripts/check-config.sh $2 \
913		$(srctree)/scripts/config_whitelist.txt $(srctree)
914
915all:		$(ALL-y) cfg
916ifeq ($(CONFIG_DM_I2C_COMPAT)$(CONFIG_SANDBOX),y)
917	@echo "===================== WARNING ======================"
918	@echo "This board uses CONFIG_DM_I2C_COMPAT. Please remove"
919	@echo "(possibly in a subsequent patch in your series)"
920	@echo "before sending patches to the mailing list."
921	@echo "===================================================="
922endif
923ifeq ($(CONFIG_MMC),y)
924ifneq ($(CONFIG_DM_MMC)$(CONFIG_OF_CONTROL)$(CONFIG_BLK),yyy)
925	@echo "===================== WARNING ======================"
926	@echo "This board does not use CONFIG_DM_MMC. Please update"
927	@echo "the board to use CONFIG_DM_MMC before the v2019.04 release."
928	@echo "Failure to update by the deadline may result in board removal."
929	@echo "See doc/driver-model/MIGRATION.txt for more info."
930	@echo "===================================================="
931endif
932endif
933ifeq ($(CONFIG_USB),y)
934ifneq ($(CONFIG_DM_USB)$(CONFIG_OF_CONTROL)$(CONFIG_BLK),yyy)
935	@echo "===================== WARNING ======================"
936	@echo "This board does not use CONFIG_DM_USB. Please update"
937	@echo "the board to use CONFIG_DM_USB before the v2019.07 release."
938	@echo "Failure to update by the deadline may result in board removal."
939	@echo "See doc/driver-model/MIGRATION.txt for more info."
940	@echo "===================================================="
941endif
942endif
943ifeq ($(CONFIG_LIBATA)$(CONFIG_DM_SCSI)$(CONFIG_MVSATA_IDE),y)
944	@echo "===================== WARNING ======================"
945	@echo "This board does not use CONFIG_DM_SCSI. Please update"
946	@echo "the storage controller to use CONFIG_DM_SCSI before the v2019.07 release."
947	@echo "Failure to update by the deadline may result in board removal."
948	@echo "See doc/driver-model/MIGRATION.txt for more info."
949	@echo "===================================================="
950endif
951	@# Check that this build does not use CONFIG options that we do not
952	@# know about unless they are in Kconfig. All the existing CONFIG
953	@# options are whitelisted, so new ones should not be added.
954	$(call cmd,cfgcheck,u-boot.cfg)
955
956PHONY += dtbs
957dtbs: dts/dt.dtb
958	@:
959dts/dt.dtb: u-boot
960	$(Q)$(MAKE) $(build)=dts dtbs
961
962quiet_cmd_copy = COPY    $@
963      cmd_copy = cp $< $@
964
965ifeq ($(CONFIG_MULTI_DTB_FIT),y)
966
967fit-dtb.blob: dts/dt.dtb FORCE
968	$(call if_changed,mkimage)
969
970MKIMAGEFLAGS_fit-dtb.blob = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
971	-a 0 -e 0 -E \
972	$(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) -d /dev/null
973
974u-boot-fit-dtb.bin: u-boot-nodtb.bin fit-dtb.blob
975	$(call if_changed,cat)
976
977u-boot.bin: u-boot-fit-dtb.bin FORCE
978	$(call if_changed,copy)
979else ifeq ($(CONFIG_OF_SEPARATE),y)
980u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE
981	$(call if_changed,cat)
982
983u-boot.bin: u-boot-dtb.bin FORCE
984	$(call if_changed,copy)
985else
986u-boot.bin: u-boot-nodtb.bin FORCE
987	$(call if_changed,copy)
988endif
989
990%.imx: %.bin
991	$(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
992
993%.vyb: %.imx
994	$(Q)$(MAKE) $(build)=arch/arm/cpu/armv7/vf610 $@
995
996quiet_cmd_copy = COPY    $@
997      cmd_copy = cp $< $@
998
999u-boot.dtb: dts/dt.dtb
1000	$(call cmd,copy)
1001
1002OBJCOPYFLAGS_u-boot.hex := -O ihex
1003
1004OBJCOPYFLAGS_u-boot.srec := -O srec
1005
1006u-boot.hex u-boot.srec: u-boot FORCE
1007	$(call if_changed,objcopy)
1008
1009OBJCOPYFLAGS_u-boot-elf.srec := $(OBJCOPYFLAGS_u-boot.srec)
1010
1011u-boot-elf.srec: u-boot.elf FORCE
1012	$(call if_changed,objcopy)
1013
1014OBJCOPYFLAGS_u-boot-spl.srec = $(OBJCOPYFLAGS_u-boot.srec)
1015
1016spl/u-boot-spl.srec: spl/u-boot-spl FORCE
1017	$(call if_changed,objcopy)
1018
1019OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \
1020		$(if $(CONFIG_X86_16BIT_INIT),-R .start16 -R .resetvec) \
1021		$(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR),-R .bootpg -R .resetvec)
1022
1023OBJCOPYFLAGS_u-boot-spl.hex = $(OBJCOPYFLAGS_u-boot.hex)
1024
1025spl/u-boot-spl.hex: spl/u-boot-spl FORCE
1026	$(call if_changed,objcopy)
1027
1028binary_size_check: u-boot-nodtb.bin FORCE
1029	@file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \
1030	map_size=$(shell cat u-boot.map | \
1031		awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
1032		| sed 's/0X//g' \
1033		| bc); \
1034	if [ "" != "$$map_size" ]; then \
1035		if test $$map_size -ne $$file_size; then \
1036			echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
1037			echo "  but u-boot-nodtb.bin shows $$file_size" >&2 ; \
1038			exit 1; \
1039		fi \
1040	fi
1041
1042ifneq ($(CONFIG_SYS_INIT_SP_BSS_OFFSET),)
1043ifneq ($(CONFIG_SYS_MALLOC_F_LEN),)
1044subtract_sys_malloc_f_len = space=$$(($${space} - $(CONFIG_SYS_MALLOC_F_LEN)))
1045else
1046subtract_sys_malloc_f_len = true
1047endif
1048# The 1/4 margin below is somewhat arbitrary. The likely initial SP usage is
1049# so low that the DTB could probably use 90%+ of the available space, for
1050# current values of CONFIG_SYS_INIT_SP_BSS_OFFSET at least. However, let's be
1051# safe for now and tweak this later if space becomes tight.
1052# A rejected alternative would be to check that some absolute minimum stack
1053# space was available. However, since CONFIG_SYS_INIT_SP_BSS_OFFSET is
1054# deliberately build-specific, to take account of build-to-build stack usage
1055# differences due to different feature sets, there is no common absolute value
1056# to check against.
1057init_sp_bss_offset_check: u-boot.dtb FORCE
1058	@dtb_size=$(shell wc -c u-boot.dtb | awk '{print $$1}') ; \
1059	space=$(CONFIG_SYS_INIT_SP_BSS_OFFSET) ; \
1060	$(subtract_sys_malloc_f_len) ; \
1061	quarter_space=$$(($${space} / 4)) ; \
1062	if [ $${dtb_size} -gt $${quarter_space} ]; then \
1063		echo "u-boot.dtb is larger than 1 quarter of " >&2 ; \
1064		echo "(CONFIG_SYS_INIT_SP_BSS_OFFSET - CONFIG_SYS_MALLOC_F_LEN)" >&2 ; \
1065		exit 1 ; \
1066	fi
1067endif
1068
1069u-boot-nodtb.bin: u-boot FORCE
1070	$(call if_changed,objcopy)
1071	$(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
1072	$(BOARD_SIZE_CHECK)
1073
1074u-boot.ldr:	u-boot
1075		$(CREATE_LDR_ENV)
1076		$(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS)
1077		$(BOARD_SIZE_CHECK)
1078
1079# binman
1080# ---------------------------------------------------------------------------
1081# Use 'make BINMAN_DEBUG=1' to enable debugging
1082quiet_cmd_binman = BINMAN  $@
1083cmd_binman = $(srctree)/tools/binman/binman -u -d u-boot.dtb -O . -m \
1084		-I . -I $(srctree) -I $(srctree)/board/$(BOARDDIR) \
1085		$(if $(BINMAN_DEBUG),-D) $(BINMAN_$(@F)) $<
1086
1087OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
1088
1089OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
1090
1091u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
1092	$(call if_changed,objcopy)
1093
1094#
1095# U-Boot entry point, needed for booting of full-blown U-Boot
1096# from the SPL U-Boot version.
1097#
1098ifndef CONFIG_SYS_UBOOT_START
1099CONFIG_SYS_UBOOT_START := 0
1100endif
1101
1102# Boards with more complex image requirments can provide an .its source file
1103# or a generator script
1104ifneq ($(CONFIG_SPL_FIT_SOURCE),"")
1105U_BOOT_ITS = $(subst ",,$(CONFIG_SPL_FIT_SOURCE))
1106else
1107ifneq ($(CONFIG_SPL_FIT_GENERATOR),"")
1108U_BOOT_ITS := u-boot.its
1109ifeq ($(CONFIG_SPL_FIT_GENERATOR),"arch/arm/mach-rockchip/make_fit_atf.py")
1110U_BOOT_ITS_DEPS += u-boot
1111endif
1112$(U_BOOT_ITS): $(U_BOOT_ITS_DEPS) FORCE
1113	$(srctree)/$(CONFIG_SPL_FIT_GENERATOR) \
1114	$(patsubst %,arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST))) > $@
1115endif
1116endif
1117
1118ifdef CONFIG_SPL_LOAD_FIT
1119MKIMAGEFLAGS_u-boot.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
1120	-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1121	-n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \
1122	$(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST)))
1123else
1124MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
1125	-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1126	-n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
1127MKIMAGEFLAGS_u-boot-ivt.img = -A $(ARCH) -T firmware_ivt -C none -O u-boot \
1128	-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
1129	-n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
1130u-boot-ivt.img: MKIMAGEOUTPUT = u-boot-ivt.img.log
1131CLEAN_FILES += u-boot-ivt.img.log u-boot-dtb.imx.log SPL.log u-boot.imx.log
1132endif
1133
1134MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
1135
1136MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
1137	-T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
1138
1139MKIMAGEFLAGS_u-boot-spl.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
1140	-T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \
1141	$(if $(KEYDIR),-k $(KEYDIR))
1142
1143MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1144		-R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
1145
1146u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl u-boot-ivt.img: \
1147		$(if $(CONFIG_SPL_LOAD_FIT),u-boot-nodtb.bin dts/dt.dtb,u-boot.bin) FORCE
1148	$(call if_changed,mkimage)
1149
1150u-boot.itb: u-boot-nodtb.bin dts/dt.dtb $(U_BOOT_ITS) FORCE
1151	$(call if_changed,mkfitimage)
1152	$(BOARD_SIZE_CHECK)
1153
1154u-boot-spl.kwb: u-boot.img spl/u-boot-spl.bin FORCE
1155	$(call if_changed,mkimage)
1156
1157u-boot.sha1:	u-boot.bin
1158		tools/ubsha1 u-boot.bin
1159
1160u-boot.dis:	u-boot
1161		$(OBJDUMP) -d $< > $@
1162
1163ifneq ($(CONFIG_SPL_PAYLOAD),)
1164SPL_PAYLOAD := $(CONFIG_SPL_PAYLOAD:"%"=%)
1165else
1166SPL_PAYLOAD := u-boot.bin
1167endif
1168
1169OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
1170				   --pad-to=$(CONFIG_SPL_PAD_TO)
1171u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
1172	$(call if_changed,pad_cat)
1173
1174ifeq ($(CONFIG_ARCH_LPC32XX)$(CONFIG_SPL),yy)
1175MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE)
1176
1177lpc32xx-spl.img: spl/u-boot-spl.bin FORCE
1178	$(call if_changed,mkimage)
1179
1180OBJCOPYFLAGS_lpc32xx-boot-0.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1181
1182lpc32xx-boot-0.bin: lpc32xx-spl.img FORCE
1183	$(call if_changed,objcopy)
1184
1185OBJCOPYFLAGS_lpc32xx-boot-1.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1186
1187lpc32xx-boot-1.bin: lpc32xx-spl.img FORCE
1188	$(call if_changed,objcopy)
1189
1190lpc32xx-full.bin: lpc32xx-boot-0.bin lpc32xx-boot-1.bin u-boot.img FORCE
1191	$(call if_changed,cat)
1192
1193CLEAN_FILES += lpc32xx-*
1194endif
1195
1196OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
1197				   --pad-to=$(CONFIG_TPL_PAD_TO)
1198tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
1199	$(call if_changed,pad_cat)
1200
1201SPL: spl/u-boot-spl.bin FORCE
1202	$(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1203
1204u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
1205	$(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
1206
1207MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
1208
1209u-boot.ubl: u-boot-with-spl.bin FORCE
1210	$(call if_changed,mkimage)
1211
1212MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
1213	$(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
1214	-T aisimage -e $(CONFIG_SPL_TEXT_BASE)
1215spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
1216	$(call if_changed,mkimage)
1217
1218OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
1219u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
1220	$(call if_changed,pad_cat)
1221
1222u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
1223	$(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
1224u-boot.sb: u-boot.bin spl/u-boot-spl.bin
1225	$(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
1226
1227# On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
1228# Both images are created using mkimage (crc etc), so that the ROM
1229# bootloader can check its integrity. Padding needs to be done to the
1230# SPL image (with mkimage header) and not the binary. Otherwise the resulting image
1231# which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
1232# The resulting image containing both U-Boot images is called u-boot.spr
1233MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
1234	-a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
1235spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
1236	$(call if_changed,mkimage)
1237
1238OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1239			  --gap-fill=0xff
1240u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
1241	$(call if_changed,pad_cat)
1242
1243ifneq ($(CONFIG_ARCH_SOCFPGA),)
1244quiet_cmd_socboot = SOCBOOT $@
1245cmd_socboot = cat	spl/u-boot-spl.sfp spl/u-boot-spl.sfp	\
1246			spl/u-boot-spl.sfp spl/u-boot-spl.sfp	\
1247			u-boot.img > $@ || rm -f $@
1248u-boot-with-spl.sfp: spl/u-boot-spl.sfp u-boot.img FORCE
1249	$(call if_changed,socboot)
1250endif
1251
1252ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
1253u-boot-with-dtb.bin: u-boot.bin u-boot.dtb \
1254	$(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR), u-boot-br.bin) FORCE
1255	$(call if_changed,binman)
1256
1257ifeq ($(CONFIG_MPC85XX_HAVE_RESET_VECTOR),y)
1258OBJCOPYFLAGS_u-boot-br.bin := -O binary -j .bootpg -j .resetvec
1259u-boot-br.bin: u-boot FORCE
1260	$(call if_changed,objcopy)
1261endif
1262endif
1263
1264# x86 uses a large ROM. We fill it with 0xff, put the 16-bit stuff (including
1265# reset vector) at the top, Intel ME descriptor at the bottom, and U-Boot in
1266# the middle. This is handled by binman based on an image description in the
1267# board's device tree.
1268ifneq ($(CONFIG_X86_RESET_VECTOR),)
1269rom: u-boot.rom FORCE
1270
1271refcode.bin: $(srctree)/board/$(BOARDDIR)/refcode.bin FORCE
1272	$(call if_changed,copy)
1273
1274quiet_cmd_ldr = LD      $@
1275cmd_ldr = $(LD) $(LDFLAGS_$(@F)) \
1276	       $(filter-out FORCE,$^) -o $@
1277
1278u-boot.rom: u-boot-x86-16bit.bin u-boot.bin \
1279		$(if $(CONFIG_SPL_X86_16BIT_INIT),spl/u-boot-spl.bin) \
1280		$(if $(CONFIG_HAVE_REFCODE),refcode.bin) FORCE
1281	$(call if_changed,binman)
1282
1283OBJCOPYFLAGS_u-boot-x86-16bit.bin := -O binary -j .start16 -j .resetvec
1284u-boot-x86-16bit.bin: u-boot FORCE
1285	$(call if_changed,objcopy)
1286endif
1287
1288ifneq ($(CONFIG_ARCH_SUNXI),)
1289ifeq ($(CONFIG_ARM64),)
1290u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img u-boot.dtb FORCE
1291	$(call if_changed,binman)
1292else
1293u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.itb FORCE
1294	$(call if_changed,cat)
1295endif
1296endif
1297
1298ifneq ($(CONFIG_TEGRA),)
1299ifneq ($(CONFIG_BINMAN),)
1300# Makes u-boot-dtb-tegra.bin u-boot-tegra.bin u-boot-nodtb-tegra.bin
1301%-dtb-tegra.bin %-tegra.bin %-nodtb-tegra.bin: \
1302		spl/%-spl %.bin FORCE
1303	$(call if_changed,binman)
1304else
1305OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1306u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot-nodtb.bin FORCE
1307	$(call if_changed,pad_cat)
1308
1309OBJCOPYFLAGS_u-boot-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1310u-boot-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
1311	$(call if_changed,pad_cat)
1312
1313u-boot-dtb-tegra.bin: u-boot-tegra.bin FORCE
1314	$(call if_changed,copy)
1315endif  # binman
1316endif
1317
1318OBJCOPYFLAGS_u-boot-app.efi := $(OBJCOPYFLAGS_EFI)
1319u-boot-app.efi: u-boot FORCE
1320	$(call if_changed,zobjcopy)
1321
1322u-boot.bin.o: u-boot.bin FORCE
1323	$(call if_changed,efipayload)
1324
1325u-boot-payload.lds: $(LDSCRIPT_EFI) FORCE
1326	$(call if_changed_dep,cpp_lds)
1327
1328# Rule to link the EFI payload which contains a stub and a U-Boot binary
1329quiet_cmd_u-boot_payload ?= LD      $@
1330      cmd_u-boot_payload ?= $(LD) $(LDFLAGS_EFI_PAYLOAD) -o $@ \
1331      -T u-boot-payload.lds arch/x86/cpu/call32.o \
1332      lib/efi/efi.o lib/efi/efi_stub.o u-boot.bin.o \
1333      $(addprefix arch/$(ARCH)/lib/,$(EFISTUB))
1334
1335u-boot-payload: u-boot.bin.o u-boot-payload.lds FORCE
1336	$(call if_changed,u-boot_payload)
1337
1338OBJCOPYFLAGS_u-boot-payload.efi := $(OBJCOPYFLAGS_EFI)
1339u-boot-payload.efi: u-boot-payload FORCE
1340	$(call if_changed,zobjcopy)
1341
1342u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
1343	$(call if_changed,cat)
1344
1345#Add a target to create boot binary having SPL binary in PBI format
1346#concatenated with u-boot binary. It is need by PowerPC SoC having
1347#internal SRAM <= 512KB.
1348MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1349		-R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \
1350		-A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE)
1351
1352spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
1353	$(call if_changed,mkimage)
1354
1355ifeq ($(ARCH),arm)
1356UBOOT_BINLOAD := u-boot.img
1357else
1358ifeq ($(CONFIG_MPC85xx)$(CONFIG_OF_SEPARATE),yy)
1359UBOOT_BINLOAD := u-boot-with-dtb.bin
1360else
1361UBOOT_BINLOAD := u-boot.bin
1362endif
1363endif
1364
1365OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1366			  --gap-fill=0xff
1367
1368u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE
1369	$(call if_changed,pad_cat)
1370
1371# PPC4xx needs the SPL at the end of the image, since the reset vector
1372# is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
1373# and need to introduce a new build target with the full blown U-Boot
1374# at the start padded up to the start of the SPL image. And then concat
1375# the SPL image to the end.
1376
1377OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
1378	--pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
1379u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
1380	$(call if_changed,pad_cat)
1381
1382# Create a new ELF from a raw binary file.
1383ifndef PLATFORM_ELFENTRY
1384  PLATFORM_ELFENTRY = "_start"
1385endif
1386quiet_cmd_u-boot-elf ?= LD      $@
1387	cmd_u-boot-elf ?= $(LD) u-boot-elf.o -o $@ \
1388	--defsym=$(PLATFORM_ELFENTRY)=$(CONFIG_SYS_TEXT_BASE) \
1389	-Ttext=$(CONFIG_SYS_TEXT_BASE)
1390u-boot.elf: u-boot.bin
1391	$(Q)$(OBJCOPY) -I binary $(PLATFORM_ELFFLAGS) $< u-boot-elf.o
1392	$(call if_changed,u-boot-elf)
1393
1394# MediaTek's ARM-based u-boot needs a header to contains its load address
1395# which is parsed by the BootROM.
1396# If the SPL build is enabled, the header will be added to the spl binary,
1397# and the spl binary and the u-boot.img will be combined into one file.
1398# Otherwise the header will be added to the u-boot.bin directly.
1399
1400ifeq ($(CONFIG_SPL),y)
1401spl/u-boot-spl-mtk.bin: spl/u-boot-spl
1402
1403u-boot-mtk.bin: u-boot.dtb u-boot.img spl/u-boot-spl-mtk.bin FORCE
1404	$(call if_changed,binman)
1405else
1406MKIMAGEFLAGS_u-boot-mtk.bin = -T mtk_image \
1407	-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \
1408	-n "$(patsubst "%",%,$(CONFIG_MTK_BROM_HEADER_INFO))"
1409
1410u-boot-mtk.bin: u-boot.bin FORCE
1411	$(call if_changed,mkimage)
1412endif
1413
1414ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(ARCH)/Makefile.postlink)
1415
1416# Rule to link u-boot
1417# May be overridden by arch/$(ARCH)/config.mk
1418quiet_cmd_u-boot__ ?= LD      $@
1419      cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
1420      -T u-boot.lds $(u-boot-init)                             \
1421      --start-group $(u-boot-main) --end-group                 \
1422      $(PLATFORM_LIBS) -Map u-boot.map;                        \
1423      $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
1424
1425quiet_cmd_smap = GEN     common/system_map.o
1426cmd_smap = \
1427	smap=`$(call SYSTEM_MAP,u-boot) | \
1428		awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
1429	$(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
1430		-c $(srctree)/common/system_map.c -o common/system_map.o
1431
1432u-boot:	$(u-boot-init) $(u-boot-main) u-boot.lds FORCE
1433	+$(call if_changed,u-boot__)
1434ifeq ($(CONFIG_KALLSYMS),y)
1435	$(call cmd,smap)
1436	$(call cmd,u-boot__) common/system_map.o
1437endif
1438
1439ifeq ($(CONFIG_RISCV),y)
1440	@tools/prelink-riscv $@ 0
1441endif
1442
1443quiet_cmd_sym ?= SYM     $@
1444      cmd_sym ?= $(OBJDUMP) -t $< > $@
1445u-boot.sym: u-boot FORCE
1446	$(call if_changed,sym)
1447
1448# The actual objects are generated when descending,
1449# make sure no implicit rule kicks in
1450$(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
1451
1452# Handle descending into subdirectories listed in $(vmlinux-dirs)
1453# Preset locale variables to speed up the build process. Limit locale
1454# tweaks to this spot to avoid wrong language settings when running
1455# make menuconfig etc.
1456# Error messages still appears in the original language
1457
1458PHONY += $(u-boot-dirs)
1459$(u-boot-dirs): prepare scripts
1460	$(Q)$(MAKE) $(build)=$@
1461
1462tools: prepare
1463# The "tools" are needed early
1464$(filter-out tools, $(u-boot-dirs)): tools
1465# The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
1466# is "yes"), so compile examples after U-Boot is compiled.
1467examples: $(filter-out examples, $(u-boot-dirs))
1468
1469define filechk_uboot.release
1470	echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1471endef
1472
1473# Store (new) UBOOTRELEASE string in include/config/uboot.release
1474include/config/uboot.release: include/config/auto.conf FORCE
1475	$(call filechk,uboot.release)
1476
1477
1478# Things we need to do before we recursively start building the kernel
1479# or the modules are listed in "prepare".
1480# A multi level approach is used. prepareN is processed before prepareN-1.
1481# archprepare is used in arch Makefiles and when processed asm symlink,
1482# version.h and scripts_basic is processed / created.
1483
1484# Listed in dependency order
1485PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1486
1487# prepare3 is used to check if we are building in a separate output directory,
1488# and if so do:
1489# 1) Check that make has not been executed in the kernel src $(srctree)
1490prepare3: include/config/uboot.release
1491ifneq ($(KBUILD_SRC),)
1492	@$(kecho) '  Using $(srctree) as source for U-Boot'
1493	$(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
1494		echo >&2 "  $(srctree) is not clean, please run 'make mrproper'"; \
1495		echo >&2 "  in the '$(srctree)' directory.";\
1496		/bin/false; \
1497	fi;
1498endif
1499
1500# prepare2 creates a makefile if using a separate output directory
1501prepare2: prepare3 outputmakefile
1502
1503prepare1: prepare2 $(version_h) $(timestamp_h) \
1504                   include/config/auto.conf
1505ifeq ($(wildcard $(LDSCRIPT)),)
1506	@echo >&2 "  Could not find linker script."
1507	@/bin/false
1508endif
1509
1510ifeq ($(CONFIG_USE_DEFAULT_ENV_FILE),y)
1511prepare1: $(defaultenv_h)
1512endif
1513
1514archprepare: prepare1 scripts_basic
1515
1516prepare0: archprepare FORCE
1517	$(Q)$(MAKE) $(build)=.
1518
1519# All the preparing..
1520prepare: prepare0
1521
1522# Generate some files
1523# ---------------------------------------------------------------------------
1524
1525define filechk_version.h
1526	(echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1527	echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1528	echo \#define CC_VERSION_STRING \"$$(LC_ALL=C $(CC) --version | head -n 1)\"; \
1529	echo \#define LD_VERSION_STRING \"$$(LC_ALL=C $(LD) --version | head -n 1)\"; )
1530endef
1531
1532# The SOURCE_DATE_EPOCH mechanism requires a date that behaves like GNU date.
1533# The BSD date on the other hand behaves different and would produce errors
1534# with the misused '-d' switch.  Respect that and search a working date with
1535# well known pre- and suffixes for the GNU variant of date.
1536define filechk_timestamp.h
1537	(if test -n "$${SOURCE_DATE_EPOCH}"; then \
1538		SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \
1539		DATE=""; \
1540		for date in gdate date.gnu date; do \
1541			$${date} -u -d "$${SOURCE_DATE}" >/dev/null 2>&1 && DATE="$${date}"; \
1542		done; \
1543		if test -n "$${DATE}"; then \
1544			LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DATE "%b %d %C%y"'; \
1545			LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TIME "%T"'; \
1546			LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TZ "%z"'; \
1547			LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1548			LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \
1549		else \
1550			return 42; \
1551		fi; \
1552	else \
1553		LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1554		LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \
1555		LC_ALL=C date +'#define U_BOOT_TZ "%z"'; \
1556		LC_ALL=C date +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1557		LC_ALL=C date +'#define U_BOOT_BUILD_DATE 0x%Y%m%d'; \
1558	fi)
1559endef
1560
1561define filechk_defaultenv.h
1562	(grep -v '^#' | \
1563	 grep -v '^$$' | \
1564	 tr '\n' '\0' | \
1565	 sed -e 's/\\\x0/\n/' | \
1566	 xxd -i ; echo ", 0x00" ; )
1567endef
1568
1569$(version_h): include/config/uboot.release FORCE
1570	$(call filechk,version.h)
1571
1572$(timestamp_h): $(srctree)/Makefile FORCE
1573	$(call filechk,timestamp.h)
1574
1575$(defaultenv_h): $(CONFIG_DEFAULT_ENV_FILE:"%"=%) FORCE
1576	$(call filechk,defaultenv.h)
1577
1578# ---------------------------------------------------------------------------
1579quiet_cmd_cpp_lds = LDS     $@
1580cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) \
1581		-D__ASSEMBLY__ -x assembler-with-cpp -std=c99 -P -o $@ $<
1582
1583u-boot.lds: $(LDSCRIPT) prepare FORCE
1584	$(call if_changed_dep,cpp_lds)
1585
1586spl/u-boot-spl.bin: spl/u-boot-spl
1587	@:
1588spl/u-boot-spl: tools prepare \
1589		$(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb) \
1590		$(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_TPL_OF_PLATDATA),dts/dt.dtb)
1591	$(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all
1592
1593spl/sunxi-spl.bin: spl/u-boot-spl
1594	@:
1595
1596spl/sunxi-spl-with-ecc.bin: spl/sunxi-spl.bin
1597	@:
1598
1599spl/u-boot-spl.sfp: spl/u-boot-spl
1600	@:
1601
1602spl/boot.bin: spl/u-boot-spl
1603	@:
1604
1605tpl/u-boot-tpl.bin: tools prepare \
1606		$(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb)
1607	$(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
1608
1609TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
1610
1611FIND := find
1612FINDFLAGS := -L
1613
1614tags ctags:
1615		ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1616						-name '*.[chS]' -print`
1617		ln -s ctags tags
1618
1619etags:
1620		etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1621						-name '*.[chS]' -print`
1622cscope:
1623		$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1624						cscope.files
1625		cscope -b -q -k
1626
1627SYSTEM_MAP = \
1628		$(NM) $1 | \
1629		grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1630		LC_ALL=C sort
1631System.map:	u-boot
1632		@$(call SYSTEM_MAP,$<) > $@
1633
1634#########################################################################
1635
1636# ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1637# R_AARCH64_RELATIVE (64-bit).
1638checkarmreloc: u-boot
1639	@RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1640		grep R_A | sort -u`"; \
1641	if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1642		 "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1643		echo "$< contains unexpected relocations: $$RELOC"; \
1644		false; \
1645	fi
1646
1647envtools: scripts_basic $(version_h) $(timestamp_h)
1648	$(Q)$(MAKE) $(build)=tools/env
1649
1650tools-only: scripts_basic $(version_h) $(timestamp_h)
1651	$(Q)$(MAKE) $(build)=tools
1652
1653tools-all: export HOST_TOOLS_ALL=y
1654tools-all: envtools tools ;
1655
1656cross_tools: export CROSS_BUILD_TOOLS=y
1657cross_tools: tools ;
1658
1659.PHONY : CHANGELOG
1660CHANGELOG:
1661	git log --no-merges U-Boot-1_1_5.. | \
1662	unexpand -a | sed -e 's/\s\s*$$//' > $@
1663
1664#########################################################################
1665
1666###
1667# Cleaning is done on three levels.
1668# make clean     Delete most generated files
1669#                Leave enough to build external modules
1670# make mrproper  Delete the current configuration, and all generated files
1671# make distclean Remove editor backup files, patch leftover files and the like
1672
1673# Directories & files removed with 'make clean'
1674CLEAN_DIRS  += $(MODVERDIR) \
1675	       $(foreach d, spl tpl, $(patsubst %,$d/%, \
1676			$(filter-out include, $(shell ls -1 $d 2>/dev/null))))
1677
1678CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h \
1679	       boot* u-boot* MLO* SPL System.map fit-dtb.blob
1680
1681# Directories & files removed with 'make mrproper'
1682MRPROPER_DIRS  += include/config include/generated spl tpl \
1683		  .tmp_objdiff
1684MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \
1685		  ctags etags tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
1686
1687# clean - Delete most, but leave enough to build external modules
1688#
1689clean: rm-dirs  := $(CLEAN_DIRS)
1690clean: rm-files := $(CLEAN_FILES)
1691
1692clean-dirs	:= $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
1693
1694clean-dirs      := $(addprefix _clean_, $(clean-dirs))
1695
1696PHONY += $(clean-dirs) clean archclean
1697$(clean-dirs):
1698	$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1699
1700clean: $(clean-dirs)
1701	$(call cmd,rmdirs)
1702	$(call cmd,rmfiles)
1703	@find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1704		\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1705		-o -name '*.ko.*' -o -name '*.su' \
1706		-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1707		-o -name '*.lex.c' -o -name '*.tab.[ch]' \
1708		-o -name '*.symtypes' -o -name 'modules.order' \
1709		-o -name modules.builtin -o -name '.tmp_*.o.*' \
1710		-o -name 'dsdt.aml' -o -name 'dsdt.asl.tmp' -o -name 'dsdt.c' \
1711		-o -name '*.efi' -o -name '*.gcno' -o -name '*.so' \) \
1712		-type f -print | xargs rm -f
1713
1714# mrproper - Delete all generated files, including .config
1715#
1716mrproper: rm-dirs  := $(wildcard $(MRPROPER_DIRS))
1717mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1718mrproper-dirs      := $(addprefix _mrproper_,scripts)
1719
1720PHONY += $(mrproper-dirs) mrproper archmrproper
1721$(mrproper-dirs):
1722	$(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1723
1724mrproper: clean $(mrproper-dirs)
1725	$(call cmd,rmdirs)
1726	$(call cmd,rmfiles)
1727	@rm -f arch/*/include/asm/arch
1728
1729# distclean
1730#
1731PHONY += distclean
1732
1733distclean: mrproper
1734	@find $(srctree) $(RCS_FIND_IGNORE) \
1735		\( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1736		-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1737		-o -name '.*.rej' -o -name '*%' -o -name 'core' \
1738		-o -name '*.pyc' \) \
1739		-type f -print | xargs rm -f
1740	@rm -f boards.cfg
1741
1742backup:
1743	F=`basename $(srctree)` ; cd .. ; \
1744	gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1745
1746help:
1747	@echo  'Cleaning targets:'
1748	@echo  '  clean		  - Remove most generated files but keep the config'
1749	@echo  '  mrproper	  - Remove all generated files + config + various backup files'
1750	@echo  '  distclean	  - mrproper + remove editor backup and patch files'
1751	@echo  ''
1752	@echo  'Configuration targets:'
1753	@$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1754	@echo  ''
1755	@echo  'Test targets:'
1756	@echo  ''
1757	@echo  '  check           - Run all automated tests that use sandbox'
1758	@echo  '  qcheck          - Run quick automated tests that use sandbox'
1759	@echo  ''
1760	@echo  'Other generic targets:'
1761	@echo  '  all		  - Build all necessary images depending on configuration'
1762	@echo  '  tests		  - Build U-Boot for sandbox and run tests'
1763	@echo  '* u-boot	  - Build the bare u-boot'
1764	@echo  '  dir/            - Build all files in dir and below'
1765	@echo  '  dir/file.[oisS] - Build specified target only'
1766	@echo  '  dir/file.lst    - Build specified mixed source/assembly target only'
1767	@echo  '                    (requires a recent binutils and recent build (System.map))'
1768	@echo  '  tags/ctags	  - Generate ctags file for editors'
1769	@echo  '  etags		  - Generate etags file for editors'
1770	@echo  '  cscope	  - Generate cscope index'
1771	@echo  '  ubootrelease	  - Output the release version string (use with make -s)'
1772	@echo  '  ubootversion	  - Output the version stored in Makefile (use with make -s)'
1773	@echo  "  cfg		  - Don't build, just create the .cfg files"
1774	@echo  "  envtools	  - Build only the target-side environment tools"
1775	@echo  ''
1776	@echo  'Static analysers'
1777	@echo  '  checkstack      - Generate a list of stack hogs'
1778	@echo  '  coccicheck      - Execute static code analysis with Coccinelle'
1779	@echo  ''
1780	@echo  'Documentation targets:'
1781	@$(MAKE) -f $(srctree)/Documentation/Makefile dochelp
1782	@echo  ''
1783	@echo  '  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1784	@echo  '  make V=2   [targets] 2 => give reason for rebuild of target'
1785	@echo  '  make O=dir [targets] Locate all output files in "dir", including .config'
1786	@echo  '  make C=1   [targets] Check all c source with $$CHECK (sparse by default)'
1787	@echo  '  make C=2   [targets] Force check of all c source with $$CHECK'
1788	@echo  '  make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1789	@echo  '  make W=n   [targets] Enable extra gcc checks, n=1,2,3 where'
1790	@echo  '		1: warnings which may be relevant and do not occur too often'
1791	@echo  '		2: warnings which occur quite often but may still be relevant'
1792	@echo  '		3: more obscure warnings, can most likely be ignored'
1793	@echo  '		Multiple levels can be combined with W=12 or W=123'
1794	@echo  ''
1795	@echo  'Execute "make" or "make all" to build all targets marked with [*] '
1796	@echo  'For further info see the ./README file'
1797
1798tests check:
1799	$(srctree)/test/run
1800
1801qcheck:
1802	$(srctree)/test/run quick
1803
1804# Documentation targets
1805# ---------------------------------------------------------------------------
1806DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \
1807	       linkcheckdocs dochelp refcheckdocs
1808PHONY += $(DOC_TARGETS)
1809$(DOC_TARGETS): scripts_basic FORCE
1810	$(Q)$(MAKE) $(build)=Documentation $@
1811
1812endif #ifeq ($(config-targets),1)
1813endif #ifeq ($(mixed-targets),1)
1814
1815PHONY += checkstack ubootrelease ubootversion
1816
1817checkstack:
1818	$(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1819	$(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1820
1821ubootrelease:
1822	@echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1823
1824ubootversion:
1825	@echo $(UBOOTVERSION)
1826
1827# Single targets
1828# ---------------------------------------------------------------------------
1829# Single targets are compatible with:
1830# - build with mixed source and output
1831# - build with separate output dir 'make O=...'
1832# - external modules
1833#
1834#  target-dir => where to store outputfile
1835#  build-dir  => directory in kernel source tree to use
1836
1837ifeq ($(KBUILD_EXTMOD),)
1838        build-dir  = $(patsubst %/,%,$(dir $@))
1839        target-dir = $(dir $@)
1840else
1841        zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1842        build-dir  = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1843        target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1844endif
1845
1846%.s: %.c prepare scripts FORCE
1847	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1848%.i: %.c prepare scripts FORCE
1849	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1850%.o: %.c prepare scripts FORCE
1851	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1852%.lst: %.c prepare scripts FORCE
1853	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1854%.s: %.S prepare scripts FORCE
1855	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1856%.o: %.S prepare scripts FORCE
1857	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1858%.symtypes: %.c prepare scripts FORCE
1859	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1860
1861# Modules
1862/: prepare scripts FORCE
1863	$(cmd_crmodverdir)
1864	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1865	$(build)=$(build-dir)
1866%/: prepare scripts FORCE
1867	$(cmd_crmodverdir)
1868	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1869	$(build)=$(build-dir)
1870%.ko: prepare scripts FORCE
1871	$(cmd_crmodverdir)
1872	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1)   \
1873	$(build)=$(build-dir) $(@:.ko=.o)
1874	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1875
1876# Consistency checks
1877# ---------------------------------------------------------------------------
1878
1879PHONY += coccicheck
1880
1881coccicheck:
1882	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
1883
1884# FIXME Should go into a make.lib or something
1885# ===========================================================================
1886
1887quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN   $(wildcard $(rm-dirs)))
1888      cmd_rmdirs = rm -rf $(rm-dirs)
1889
1890quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files)))
1891      cmd_rmfiles = rm -f $(rm-files)
1892
1893# read all saved command lines
1894
1895targets := $(wildcard $(sort $(targets)))
1896cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1897
1898ifneq ($(cmd_files),)
1899  $(cmd_files): ;	# Do not try to update included dependency files
1900  include $(cmd_files)
1901endif
1902
1903endif	# skip-makefile
1904
1905PHONY += FORCE
1906FORCE:
1907
1908# Declare the contents of the .PHONY variable as phony.  We keep that
1909# information in a variable so we can use it in if_changed and friends.
1910.PHONY: $(PHONY)
1911