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1 #
2 # (C) Copyright 2000-2013
3 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 #
5 # SPDX-License-Identifier: GPL-2.0+
6 #
7
8 VERSION = 2014
9 PATCHLEVEL = 04
10 SUBLEVEL =
11 EXTRAVERSION =
12 NAME =
13
14 # *DOCUMENTATION*
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.
19
20 # Do not:
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
25
26 # Avoid funny character set dependencies
27 unexport LC_ALL
28 LC_COLLATE=C
29 LC_NUMERIC=C
30 export LC_COLLATE LC_NUMERIC
31
32 # We are using a recursive build, so we need to do a little thinking
33 # to get the ordering right.
34 #
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
41 # is now up to date.
42 #
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
46 # prepare rule.
47
48 # To put more focus on warnings, be less verbose as default
49 # Use 'make V=1' to see the full commands
50
51 ifeq ("$(origin V)", "command line")
52 KBUILD_VERBOSE = $(V)
53 endif
54 ifndef KBUILD_VERBOSE
55 KBUILD_VERBOSE = 0
56 endif
57
58 # Call a source code checker (by default, "sparse") as part of the
59 # C compilation.
60 #
61 # Use 'make C=1' to enable checking of only re-compiled files.
62 # Use 'make C=2' to enable checking of *all* source files, regardless
63 # of whether they are re-compiled or not.
64 #
65 # See the file "Documentation/sparse.txt" for more details, including
66 # where to get the "sparse" utility.
67
68 ifeq ("$(origin C)", "command line")
69 KBUILD_CHECKSRC = $(C)
70 endif
71 ifndef KBUILD_CHECKSRC
72 KBUILD_CHECKSRC = 0
73 endif
74
75 # Use make M=dir to specify directory of external module to build
76 # Old syntax make ... SUBDIRS=$PWD is still supported
77 # Setting the environment variable KBUILD_EXTMOD take precedence
78 ifdef SUBDIRS
79 KBUILD_EXTMOD ?= $(SUBDIRS)
80 endif
81
82 ifeq ("$(origin M)", "command line")
83 KBUILD_EXTMOD := $(M)
84 endif
85
86 # kbuild supports saving output files in a separate directory.
87 # To locate output files in a separate directory two syntaxes are supported.
88 # In both cases the working directory must be the root of the kernel src.
89 # 1) O=
90 # Use "make O=dir/to/store/output/files/"
91 #
92 # 2) Set KBUILD_OUTPUT
93 # Set the environment variable KBUILD_OUTPUT to point to the directory
94 # where the output files shall be placed.
95 # export KBUILD_OUTPUT=dir/to/store/output/files/
96 # make
97 #
98 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
99 # variable.
100
101
102 # KBUILD_SRC is set on invocation of make in OBJ directory
103 # KBUILD_SRC is not intended to be used by the regular user (for now)
104 ifeq ($(KBUILD_SRC),)
105
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 := $(O)
110 endif
111
112 ifeq ("$(origin W)", "command line")
113 export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W)
114 endif
115
116 # That's our default target when none is given on the command line
117 PHONY := _all
118 _all:
119
120 # Cancel implicit rules on top Makefile
121 $(CURDIR)/Makefile Makefile: ;
122
123 ifneq ($(KBUILD_OUTPUT),)
124 # Invoke a second make in the output directory, passing relevant variables
125 # check that the output directory actually exists
126 saved-output := $(KBUILD_OUTPUT)
127 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
128 && /bin/pwd)
129 $(if $(KBUILD_OUTPUT),, \
130 $(error failed to create output directory "$(saved-output)"))
131
132 PHONY += $(MAKECMDGOALS) sub-make
133
134 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
135 @:
136
137 sub-make: FORCE
138 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
139 KBUILD_SRC=$(CURDIR) \
140 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
141 $(filter-out _all sub-make,$(MAKECMDGOALS))
142
143 # Leave processing to above invocation of make
144 skip-makefile := 1
145 endif # ifneq ($(KBUILD_OUTPUT),)
146 endif # ifeq ($(KBUILD_SRC),)
147
148 # We process the rest of the Makefile if this is the final invocation of make
149 ifeq ($(skip-makefile),)
150
151 # If building an external module we do not care about the all: rule
152 # but instead _all depend on modules
153 PHONY += all
154 ifeq ($(KBUILD_EXTMOD),)
155 _all: all
156 else
157 _all: modules
158 endif
159
160 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
161 objtree := $(CURDIR)
162 src := $(srctree)
163 obj := $(objtree)
164
165 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
166
167 export srctree objtree VPATH
168
169 MKCONFIG := $(srctree)/mkconfig
170 export MKCONFIG
171
172 # Make sure CDPATH settings don't interfere
173 unexport CDPATH
174
175 #########################################################################
176
177 HOSTARCH := $(shell uname -m | \
178 sed -e s/i.86/x86/ \
179 -e s/sun4u/sparc64/ \
180 -e s/arm.*/arm/ \
181 -e s/sa110/arm/ \
182 -e s/ppc64/powerpc/ \
183 -e s/ppc/powerpc/ \
184 -e s/macppc/powerpc/\
185 -e s/sh.*/sh/)
186
187 HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
188 sed -e 's/\(cygwin\).*/cygwin/')
189
190 export HOSTARCH HOSTOS
191
192 # Deal with colliding definitions from tcsh etc.
193 VENDOR=
194
195 #########################################################################
196
197 # set default to nothing for native builds
198 ifeq ($(HOSTARCH),$(ARCH))
199 CROSS_COMPILE ?=
200 endif
201
202 # SHELL used by kbuild
203 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
204 else if [ -x /bin/bash ]; then echo /bin/bash; \
205 else echo sh; fi ; fi)
206
207 HOSTCC = gcc
208 HOSTCXX = g++
209 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
210 HOSTCXXFLAGS = -O2
211
212 ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1)
213 HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \
214 -Wno-missing-field-initializers -fno-delete-null-pointer-checks
215 endif
216
217 ifeq ($(HOSTOS),cygwin)
218 HOSTCFLAGS += -ansi
219 endif
220
221 # Mac OS X / Darwin's C preprocessor is Apple specific. It
222 # generates numerous errors and warnings. We want to bypass it
223 # and use GNU C's cpp. To do this we pass the -traditional-cpp
224 # option to the compiler. Note that the -traditional-cpp flag
225 # DOES NOT have the same semantics as GNU C's flag, all it does
226 # is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
227 #
228 # Apple's linker is similar, thanks to the new 2 stage linking
229 # multiple symbol definitions are treated as errors, hence the
230 # -multiply_defined suppress option to turn off this error.
231 #
232 ifeq ($(HOSTOS),darwin)
233 # get major and minor product version (e.g. '10' and '6' for Snow Leopard)
234 DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.')
235 DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.')
236
237 os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
238 $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
239
240 # Snow Leopards build environment has no longer restrictions as described above
241 HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc")
242 HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp")
243 HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
244 endif
245
246 # Decide whether to build built-in, modular, or both.
247 # Normally, just do built-in.
248
249 KBUILD_MODULES :=
250 KBUILD_BUILTIN := 1
251
252 # If we have only "make modules", don't compile built-in objects.
253 # When we're building modules with modversions, we need to consider
254 # the built-in objects during the descend as well, in order to
255 # make sure the checksums are up to date before we record them.
256
257 ifeq ($(MAKECMDGOALS),modules)
258 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
259 endif
260
261 # If we have "make <whatever> modules", compile modules
262 # in addition to whatever we do anyway.
263 # Just "make" or "make all" shall build modules as well
264
265 # U-Boot does not need modules
266 #ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
267 # KBUILD_MODULES := 1
268 #endif
269
270 #ifeq ($(MAKECMDGOALS),)
271 # KBUILD_MODULES := 1
272 #endif
273
274 export KBUILD_MODULES KBUILD_BUILTIN
275 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
276
277 # Beautify output
278 # ---------------------------------------------------------------------------
279 #
280 # Normally, we echo the whole command before executing it. By making
281 # that echo $($(quiet)$(cmd)), we now have the possibility to set
282 # $(quiet) to choose other forms of output instead, e.g.
283 #
284 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
285 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
286 #
287 # If $(quiet) is empty, the whole command will be printed.
288 # If it is set to "quiet_", only the short version will be printed.
289 # If it is set to "silent_", nothing will be printed at all, since
290 # the variable $(silent_cmd_cc_o_c) doesn't exist.
291 #
292 # A simple variant is to prefix commands with $(Q) - that's useful
293 # for commands that shall be hidden in non-verbose mode.
294 #
295 # $(Q)ln $@ :<
296 #
297 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
298 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
299
300 ifeq ($(KBUILD_VERBOSE),1)
301 quiet =
302 Q =
303 else
304 quiet=quiet_
305 Q = @
306 endif
307
308 # If the user is running make -s (silent mode), suppress echoing of
309 # commands
310
311 ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4
312 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
313 quiet=silent_
314 endif
315 else # make-3.8x
316 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
317 quiet=silent_
318 endif
319 endif
320
321 export quiet Q KBUILD_VERBOSE
322
323 ifneq ($(CC),)
324 ifeq ($(shell $(CC) -v 2>&1 | grep -c "clang version"), 1)
325 COMPILER := clang
326 else
327 COMPILER := gcc
328 endif
329 export COMPILER
330 endif
331
332 # Look for make include files relative to root of kernel src
333 MAKEFLAGS += --include-dir=$(srctree)
334
335 # We need some generic definitions (do not try to remake the file).
336 $(srctree)/scripts/Kbuild.include: ;
337 include $(srctree)/scripts/Kbuild.include
338
339 # Make variables (CC, etc...)
340
341 AS = $(CROSS_COMPILE)as
342 # Always use GNU ld
343 ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
344 LD = $(CROSS_COMPILE)ld.bfd
345 else
346 LD = $(CROSS_COMPILE)ld
347 endif
348 CC = $(CROSS_COMPILE)gcc
349 CPP = $(CC) -E
350 AR = $(CROSS_COMPILE)ar
351 NM = $(CROSS_COMPILE)nm
352 LDR = $(CROSS_COMPILE)ldr
353 STRIP = $(CROSS_COMPILE)strip
354 OBJCOPY = $(CROSS_COMPILE)objcopy
355 OBJDUMP = $(CROSS_COMPILE)objdump
356 AWK = awk
357 RANLIB = $(CROSS_COMPILE)RANLIB
358 DTC = dtc
359 CHECK = sparse
360
361 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
362 -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
363
364 KBUILD_CPPFLAGS := -D__KERNEL__
365
366 KBUILD_CFLAGS := -Wall -Wstrict-prototypes \
367 -Wno-format-security \
368 -fno-builtin -ffreestanding
369 KBUILD_AFLAGS := -D__ASSEMBLY__
370
371 # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
372 UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
373 UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
374
375 export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
376 export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
377 export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
378 export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
379 export MAKE AWK
380 export DTC CHECK CHECKFLAGS
381
382 export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
383 export KBUILD_CFLAGS KBUILD_AFLAGS
384
385 # When compiling out-of-tree modules, put MODVERDIR in the module
386 # tree rather than in the kernel tree. The kernel tree might
387 # even be read-only.
388 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
389
390 # Files to ignore in find ... statements
391
392 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
393 -name CVS -o -name .pc -o -name .hg -o -name .git \) \
394 -prune -o
395 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
396 --exclude CVS --exclude .pc --exclude .hg --exclude .git
397
398 # ===========================================================================
399 # Rules shared between *config targets and build targets
400
401 # Basic helpers built in scripts/
402 PHONY += scripts_basic
403 scripts_basic:
404 $(Q)$(MAKE) $(build)=scripts/basic
405 $(Q)rm -f .tmp_quiet_recordmcount
406
407 # To avoid any implicit rule to kick in, define an empty command.
408 scripts/basic/%: scripts_basic ;
409
410 PHONY += outputmakefile
411 # outputmakefile generates a Makefile in the output directory, if using a
412 # separate output directory. This allows convenient use of make in the
413 # output directory.
414 outputmakefile:
415 ifneq ($(KBUILD_SRC),)
416 $(Q)ln -fsn $(srctree) source
417 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
418 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
419 endif
420
421 # To make sure we do not include .config for any of the *config targets
422 # catch them early, and hand them over to scripts/kconfig/Makefile
423 # It is allowed to specify more targets when calling make, including
424 # mixing *config targets and build targets.
425 # For example 'make oldconfig all'.
426 # Detect when mixed targets is specified, and make a second invocation
427 # of make so .config is not included in this case either (for *config).
428
429 version_h := include/generated/version_autogenerated.h
430 timestamp_h := include/generated/timestamp_autogenerated.h
431
432 no-dot-config-targets := clean clobber mrproper distclean \
433 help %docs check% coccicheck \
434 ubootversion backup tools-only
435
436 config-targets := 0
437 mixed-targets := 0
438 dot-config := 1
439
440 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
441 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
442 dot-config := 0
443 endif
444 endif
445
446 ifeq ($(KBUILD_EXTMOD),)
447 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
448 config-targets := 1
449 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
450 mixed-targets := 1
451 endif
452 endif
453 endif
454
455 ifeq ($(mixed-targets),1)
456 # ===========================================================================
457 # We're called with mixed targets (*config and build targets).
458 # Handle them one by one.
459
460 PHONY += $(MAKECMDGOALS) build-one-by-one
461
462 $(MAKECMDGOALS): build-one-by-one
463 @:
464
465 build-one-by-one:
466 $(Q)set -e; \
467 for i in $(MAKECMDGOALS); do \
468 $(MAKE) -f $(srctree)/Makefile $$i; \
469 done
470
471 else
472 ifeq ($(config-targets),1)
473 # ===========================================================================
474 # *config targets only - make sure prerequisites are updated, and descend
475 # in scripts/kconfig to make the *config target
476
477 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
478 # KBUILD_DEFCONFIG may point out an alternative default configuration
479 # used for 'make defconfig'
480
481 %_config:: outputmakefile
482 @$(MKCONFIG) -A $(@:_config=)
483
484 else
485 # ===========================================================================
486 # Build targets only - this includes vmlinux, arch specific targets, clean
487 # targets and others. In general all targets except *config targets.
488
489 # load ARCH, BOARD, and CPU configuration
490 -include include/config.mk
491
492 ifeq ($(dot-config),1)
493 # Read in config
494 -include include/autoconf.mk
495 -include include/autoconf.mk.dep
496
497 # load other configuration
498 include $(srctree)/config.mk
499
500 ifeq ($(wildcard include/config.mk),)
501 $(error "System not configured - see README")
502 endif
503
504 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
505 # that (or fail if absent). Otherwise, search for a linker script in a
506 # standard location.
507
508 ifndef LDSCRIPT
509 #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
510 ifdef CONFIG_SYS_LDSCRIPT
511 # need to strip off double quotes
512 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
513 endif
514 endif
515
516 # If there is no specified link script, we look in a number of places for it
517 ifndef LDSCRIPT
518 ifeq ($(CONFIG_NAND_U_BOOT),y)
519 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot-nand.lds
520 ifeq ($(wildcard $(LDSCRIPT)),)
521 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot-nand.lds
522 endif
523 endif
524 ifeq ($(wildcard $(LDSCRIPT)),)
525 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
526 endif
527 ifeq ($(wildcard $(LDSCRIPT)),)
528 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
529 endif
530 ifeq ($(wildcard $(LDSCRIPT)),)
531 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
532 endif
533 endif
534
535 else
536
537
538 endif # $(dot-config)
539
540 KBUILD_CFLAGS += -Os #-fomit-frame-pointer
541
542 ifdef BUILD_TAG
543 KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
544 endif
545
546 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
547
548 ifeq ($(COMPILER),clang)
549 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
550 KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,)
551 KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable)
552 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
553 KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
554 # Quiet clang warning: comparison of unsigned expression < 0 is always false
555 KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
556 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the
557 # source of a reference will be _MergedGlobals and not on of the whitelisted names.
558 # See modpost pattern 2
559 KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
560 endif
561
562 KBUILD_CFLAGS += -g
563 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
564 # option to the assembler.
565 KBUILD_AFLAGS += -g
566
567 # Report stack usage if supported
568 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
569 KBUILD_CFLAGS += -fstack-usage
570 endif
571
572 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
573
574 # turn jbsr into jsr for m68k
575 ifeq ($(ARCH),m68k)
576 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
577 KBUILD_AFLAGS += -Wa,-gstabs,-S
578 endif
579 endif
580
581 ifneq ($(CONFIG_SYS_TEXT_BASE),)
582 KBUILD_CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
583 endif
584
585 export CONFIG_SYS_TEXT_BASE
586
587 # Use UBOOTINCLUDE when you must reference the include/ directory.
588 # Needed to be compatible with the O= option
589 UBOOTINCLUDE := \
590 -Iinclude \
591 $(if $(KBUILD_SRC), -I$(srctree)/include) \
592 -I$(srctree)/arch/$(ARCH)/include
593
594 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
595 CHECKFLAGS += $(NOSTDINC_FLAGS)
596
597 # FIX ME
598 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
599 $(NOSTDINC_FLAGS)
600 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
601
602 #########################################################################
603 # U-Boot objects....order is important (i.e. start must be first)
604
605 head-y := $(CPUDIR)/start.o
606 head-$(CONFIG_4xx) += arch/powerpc/cpu/ppc4xx/resetvec.o
607 head-$(CONFIG_MPC85xx) += arch/powerpc/cpu/mpc85xx/resetvec.o
608
609 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
610
611 libs-y += lib/
612 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
613 libs-y += $(CPUDIR)/
614 ifdef SOC
615 libs-y += $(CPUDIR)/$(SOC)/
616 endif
617 libs-$(CONFIG_OF_EMBED) += dts/
618 libs-y += arch/$(ARCH)/lib/
619 libs-y += fs/
620 libs-y += net/
621 libs-y += disk/
622 libs-y += drivers/
623 libs-$(CONFIG_DM) += drivers/core/
624 libs-y += drivers/dma/
625 libs-y += drivers/gpio/
626 libs-y += drivers/i2c/
627 libs-y += drivers/input/
628 libs-y += drivers/mmc/
629 libs-y += drivers/mtd/
630 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
631 libs-y += drivers/mtd/onenand/
632 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
633 libs-y += drivers/mtd/spi/
634 libs-y += drivers/net/
635 libs-y += drivers/net/phy/
636 libs-y += drivers/pci/
637 libs-y += drivers/power/ \
638 drivers/power/fuel_gauge/ \
639 drivers/power/mfd/ \
640 drivers/power/pmic/ \
641 drivers/power/battery/
642 libs-y += drivers/spi/
643 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
644 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
645 libs-y += drivers/serial/
646 libs-y += drivers/usb/eth/
647 libs-y += drivers/usb/gadget/
648 libs-y += drivers/usb/host/
649 libs-y += drivers/usb/musb/
650 libs-y += drivers/usb/musb-new/
651 libs-y += drivers/usb/phy/
652 libs-y += drivers/usb/ulpi/
653 libs-y += common/
654 libs-y += lib/libfdt/
655 libs-$(CONFIG_API) += api/
656 libs-$(CONFIG_HAS_POST) += post/
657 libs-y += test/
658 libs-y += test/dm/
659 libs-$(CONFIG_DM_DEMO) += drivers/demo/
660
661 ifneq (,$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35 mxs vf610))
662 libs-y += arch/$(ARCH)/imx-common/
663 endif
664
665 libs-$(CONFIG_ARM) += arch/arm/cpu/
666 libs-$(CONFIG_PPC) += arch/powerpc/cpu/
667
668 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
669
670 libs-y := $(sort $(libs-y))
671
672 u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
673
674 u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
675
676 libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
677
678 u-boot-init := $(head-y)
679 u-boot-main := $(libs-y)
680
681
682 # Add GCC lib
683 ifdef CONFIG_USE_PRIVATE_LIBGCC
684 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
685 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
686 else
687 PLATFORM_LIBGCC = -L $(CONFIG_USE_PRIVATE_LIBGCC) -lgcc
688 endif
689 else
690 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
691 endif
692 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
693 export PLATFORM_LIBS
694
695 # Special flags for CPP when processing the linker script.
696 # Pass the version down so we can handle backwards compatibility
697 # on the fly.
698 LDPPFLAGS += \
699 -include $(srctree)/include/u-boot/u-boot.lds.h \
700 -DCPUDIR=$(CPUDIR) \
701 $(shell $(LD) --version | \
702 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
703
704 #########################################################################
705 #########################################################################
706
707 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
708 BOARD_SIZE_CHECK = \
709 @actual=`wc -c $@ | awk '{print $$1}'`; \
710 limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
711 if test $$actual -gt $$limit; then \
712 echo "$@ exceeds file size limit:" >&2 ; \
713 echo " limit: $$limit bytes" >&2 ; \
714 echo " actual: $$actual bytes" >&2 ; \
715 echo " excess: $$((actual - limit)) bytes" >&2; \
716 exit 1; \
717 fi
718 else
719 BOARD_SIZE_CHECK =
720 endif
721
722 # Statically apply RELA-style relocations (currently arm64 only)
723 ifneq ($(CONFIG_STATIC_RELA),)
724 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
725 DO_STATIC_RELA = \
726 start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
727 end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
728 tools/relocate-rela $(2) $(3) $$start $$end
729 else
730 DO_STATIC_RELA =
731 endif
732
733 # Always append ALL so that arch config.mk's can add custom ones
734 ALL-y += u-boot.srec u-boot.bin System.map
735
736 ALL-$(CONFIG_NAND_U_BOOT) += u-boot-nand.bin
737 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
738 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
739 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
740 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
741 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
742 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb u-boot-dtb.bin
743 ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
744 ifneq ($(CONFIG_SPL_TARGET),)
745 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
746 endif
747 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
748
749 # enable combined SPL/u-boot/dtb rules for tegra
750 ifneq ($(CONFIG_TEGRA),)
751 ifeq ($(CONFIG_SPL),y)
752 ifeq ($(CONFIG_OF_SEPARATE),y)
753 ALL-y += u-boot-dtb-tegra.bin
754 else
755 ALL-y += u-boot-nodtb-tegra.bin
756 endif
757 endif
758 endif
759
760 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
761 ifneq ($(CONFIG_SYS_TEXT_BASE),)
762 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
763 endif
764
765 quiet_cmd_objcopy = OBJCOPY $@
766 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
767
768 quiet_cmd_mkimage = MKIMAGE $@
769 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
770 $(if $(KBUILD_VERBOSE:1=), >/dev/null)
771
772 quiet_cmd_cat = CAT $@
773 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
774
775 append = cat $(filter-out $< $(PHONY), $^) >> $@
776
777 quiet_cmd_pad_cat = CAT $@
778 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
779
780 all: $(ALL-y)
781
782 PHONY += dtbs
783 dtbs dts/dt.dtb: checkdtc u-boot
784 $(Q)$(MAKE) $(build)=dts dtbs
785
786 u-boot-dtb.bin: u-boot.bin dts/dt.dtb FORCE
787 $(call if_changed,cat)
788
789 %.imx: %.bin
790 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
791
792 quiet_cmd_copy = COPY $@
793 cmd_copy = cp $< $@
794
795 u-boot.dtb: dts/dt.dtb
796 $(call cmd,copy)
797
798 OBJCOPYFLAGS_u-boot.hex := -O ihex
799
800 OBJCOPYFLAGS_u-boot.srec := -O srec
801
802 u-boot.hex u-boot.srec: u-boot FORCE
803 $(call if_changed,objcopy)
804
805 OBJCOPYFLAGS_u-boot.bin := -O binary
806
807 u-boot.bin: u-boot FORCE
808 $(call if_changed,objcopy)
809 $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
810 $(BOARD_SIZE_CHECK)
811
812 u-boot.ldr: u-boot
813 $(CREATE_LDR_ENV)
814 $(LDR) -T $(CONFIG_BFIN_CPU) -c $@ $< $(LDR_FLAGS)
815 $(BOARD_SIZE_CHECK)
816
817 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
818
819 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
820
821 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
822 $(call if_changed,objcopy)
823
824 #
825 # U-Boot entry point, needed for booting of full-blown U-Boot
826 # from the SPL U-Boot version.
827 #
828 ifndef CONFIG_SYS_UBOOT_START
829 CONFIG_SYS_UBOOT_START := 0
830 endif
831
832 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
833 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
834 -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
835
836 MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
837 -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
838
839 MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
840 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
841
842 u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE
843 $(call if_changed,mkimage)
844
845 u-boot.sha1: u-boot.bin
846 tools/ubsha1 u-boot.bin
847
848 u-boot.dis: u-boot
849 $(OBJDUMP) -d $< > $@
850
851 ifdef CONFIG_TPL
852 SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
853 else
854 SPL_PAYLOAD := u-boot.bin
855 endif
856
857 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
858 --pad-to=$(CONFIG_SPL_PAD_TO)
859 u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
860 $(call if_changed,pad_cat)
861
862 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
863 --pad-to=$(CONFIG_TPL_PAD_TO)
864 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
865 $(call if_changed,pad_cat)
866
867 SPL: spl/u-boot-spl.bin FORCE
868 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
869
870 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
871 $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
872
873 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
874
875 u-boot.ubl: u-boot-with-spl.bin FORCE
876 $(call if_changed,mkimage)
877
878 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
879 $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
880 -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
881 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
882 $(call if_changed,mkimage)
883
884 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_MAX_SIZE)
885 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
886 $(call if_changed,pad_cat)
887
888 u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
889 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
890 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
891 $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
892
893 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
894 # Both images are created using mkimage (crc etc), so that the ROM
895 # bootloader can check its integrity. Padding needs to be done to the
896 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
897 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
898 # The resulting image containing both U-Boot images is called u-boot.spr
899 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
900 -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
901 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
902 $(call if_changed,mkimage)
903
904 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
905 --gap-fill=0xff
906 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
907 $(call if_changed,pad_cat)
908
909 ifneq ($(CONFIG_TEGRA),)
910 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
911 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
912 $(call if_changed,pad_cat)
913
914 ifeq ($(CONFIG_OF_SEPARATE),y)
915 u-boot-dtb-tegra.bin: u-boot-nodtb-tegra.bin dts/dt.dtb FORCE
916 $(call if_changed,cat)
917 endif
918 endif
919
920 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
921 $(call if_changed,cat)
922
923 # PPC4xx needs the SPL at the end of the image, since the reset vector
924 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
925 # and need to introduce a new build target with the full blown U-Boot
926 # at the start padded up to the start of the SPL image. And then concat
927 # the SPL image to the end.
928
929 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
930 --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
931 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
932 $(call if_changed,pad_cat)
933
934 # Create a new ELF from a raw binary file. This is useful for arm64
935 # where static relocation needs to be performed on the raw binary,
936 # but certain simulators only accept an ELF file (but don't do the
937 # relocation).
938 # FIXME refactor dts/Makefile to share target/arch detection
939 u-boot.elf: u-boot.bin
940 @$(OBJCOPY) -B aarch64 -I binary -O elf64-littleaarch64 \
941 $< u-boot-elf.o
942 @$(LD) u-boot-elf.o -o $@ \
943 --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
944 -Ttext=$(CONFIG_SYS_TEXT_BASE)
945
946 # Rule to link u-boot
947 # May be overridden by arch/$(ARCH)/config.mk
948 quiet_cmd_u-boot__ ?= LD $@
949 cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
950 -T u-boot.lds $(u-boot-init) \
951 --start-group $(u-boot-main) --end-group \
952 $(PLATFORM_LIBS) -Map u-boot.map
953
954 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds
955 $(call if_changed,u-boot__)
956 ifeq ($(CONFIG_KALLSYMS),y)
957 smap=`$(call SYSTEM_MAP,u-boot) | \
958 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
959 $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
960 -c $(srctree)/common/system_map.c -o common/system_map.o
961 $(call cmd,u-boot__) common/system_map.o
962 endif
963
964 # The actual objects are generated when descending,
965 # make sure no implicit rule kicks in
966 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
967
968 # Handle descending into subdirectories listed in $(vmlinux-dirs)
969 # Preset locale variables to speed up the build process. Limit locale
970 # tweaks to this spot to avoid wrong language settings when running
971 # make menuconfig etc.
972 # Error messages still appears in the original language
973
974 PHONY += $(u-boot-dirs)
975 $(u-boot-dirs): prepare scripts
976 $(Q)$(MAKE) $(build)=$@
977
978 tools: prepare
979 # The "tools" are needed early
980 $(filter-out tools, $(u-boot-dirs)): tools
981 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
982 # is "yes"), so compile examples after U-Boot is compiled.
983 examples: $(filter-out examples, $(u-boot-dirs))
984
985 define filechk_uboot.release
986 echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
987 endef
988
989 # Store (new) UBOOTRELEASE string in include/config/uboot.release
990 include/config/uboot.release: Makefile FORCE
991 $(call filechk,uboot.release)
992
993
994 # Things we need to do before we recursively start building the kernel
995 # or the modules are listed in "prepare".
996 # A multi level approach is used. prepareN is processed before prepareN-1.
997 # archprepare is used in arch Makefiles and when processed asm symlink,
998 # version.h and scripts_basic is processed / created.
999
1000 # Listed in dependency order
1001 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1002
1003 # prepare3 is used to check if we are building in a separate output directory,
1004 # and if so do:
1005 # 1) Check that make has not been executed in the kernel src $(srctree)
1006 prepare3: include/config/uboot.release
1007 ifneq ($(KBUILD_SRC),)
1008 @$(kecho) ' Using $(srctree) as source for u-boot'
1009 $(Q)if [ -f $(srctree)/include/config.mk ]; then \
1010 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
1011 echo >&2 " in the '$(srctree)' directory.";\
1012 /bin/false; \
1013 fi;
1014 endif
1015
1016 # prepare2 creates a makefile if using a separate output directory
1017 prepare2: prepare3 outputmakefile
1018
1019 prepare1: prepare2 $(version_h) $(timestamp_h)
1020 ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
1021 ifeq ($(CONFIG_SYS_GENERIC_BOARD),y)
1022 @echo >&2 " Your architecture does not support generic board."
1023 @echo >&2 " Please undefine CONFIG_SYS_GENERIC_BOARD in your board config file."
1024 @/bin/false
1025 endif
1026 endif
1027 ifeq ($(wildcard $(LDSCRIPT)),)
1028 @echo >&2 " Could not find linker script."
1029 @/bin/false
1030 endif
1031
1032 archprepare: prepare1 scripts_basic
1033
1034 prepare0: archprepare FORCE
1035 $(Q)$(MAKE) $(build)=.
1036
1037 # All the preparing..
1038 prepare: prepare0
1039
1040 # Generate some files
1041 # ---------------------------------------------------------------------------
1042
1043 define filechk_version.h
1044 (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1045 echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1046 echo \#define CC_VERSION_STRING \"$$($(CC) --version | head -n 1)\"; \
1047 echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; )
1048 endef
1049
1050 define filechk_timestamp.h
1051 (LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1052 LC_ALL=C date +'#define U_BOOT_TIME "%T"')
1053 endef
1054
1055 $(version_h): include/config/uboot.release FORCE
1056 $(call filechk,version.h)
1057
1058 $(timestamp_h): $(srctree)/Makefile FORCE
1059 $(call filechk,timestamp.h)
1060
1061 #
1062 # Auto-generate the autoconf.mk file (which is included by all makefiles)
1063 #
1064 # This target actually generates 2 files; autoconf.mk and autoconf.mk.dep.
1065 # the dep file is only include in this top level makefile to determine when
1066 # to regenerate the autoconf.mk file.
1067
1068 quiet_cmd_autoconf_dep = GEN $@
1069 cmd_autoconf_dep = $(CC) -x c -DDO_DEPS_ONLY -M $(c_flags) \
1070 -MQ include/autoconf.mk $(srctree)/include/common.h > $@ || rm $@
1071
1072 include/autoconf.mk.dep: include/config.h include/common.h
1073 $(call cmd,autoconf_dep)
1074
1075 quiet_cmd_autoconf = GEN $@
1076 cmd_autoconf = \
1077 $(CPP) $(c_flags) -DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && \
1078 sed -n -f $(srctree)/tools/scripts/define2mk.sed $@.tmp > $@; \
1079 rm $@.tmp
1080
1081 include/autoconf.mk: include/config.h
1082 $(call cmd,autoconf)
1083
1084 # ---------------------------------------------------------------------------
1085
1086 PHONY += depend dep
1087 depend dep:
1088 @echo '*** Warning: make $@ is unnecessary now.'
1089
1090 # ---------------------------------------------------------------------------
1091 quiet_cmd_cpp_lds = LDS $@
1092 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
1093 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
1094
1095 u-boot.lds: $(LDSCRIPT) prepare FORCE
1096 $(call if_changed_dep,cpp_lds)
1097
1098 PHONY += nand_spl
1099 nand_spl: prepare
1100 $(Q)$(MAKE) $(build)=nand_spl/board/$(BOARDDIR) all
1101 @echo >&2
1102 @echo >&2 "==================== WARNING ====================="
1103 @echo >&2 "nand_spl will not be included in v2014.07 release."
1104 @echo >&2 "Please switch over to SPL."
1105 @echo >&2 "Otherwise, this board will be removed."
1106 @echo >&2 "=================================================="
1107 @echo >&2
1108
1109 nand_spl/u-boot-spl-16k.bin: nand_spl
1110 @:
1111
1112 u-boot-nand.bin: nand_spl/u-boot-spl-16k.bin u-boot.bin FORCE
1113 $(call if_changed,cat)
1114
1115 spl/u-boot-spl.bin: spl/u-boot-spl
1116 @:
1117 spl/u-boot-spl: tools prepare
1118 $(Q)$(MAKE) obj=spl -f $(srctree)/spl/Makefile all
1119
1120 tpl/u-boot-tpl.bin: tools prepare
1121 $(Q)$(MAKE) obj=tpl -f $(srctree)/spl/Makefile all CONFIG_TPL_BUILD=y
1122
1123 TAG_SUBDIRS := $(u-boot-dirs) include
1124
1125 FIND := find
1126 FINDFLAGS := -L
1127
1128 tags ctags:
1129 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1130 -name '*.[chS]' -print`
1131
1132 etags:
1133 etags -a -o $(obj)etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1134 -name '*.[chS]' -print`
1135 cscope:
1136 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1137 cscope.files
1138 cscope -b -q -k
1139
1140 SYSTEM_MAP = \
1141 $(NM) $1 | \
1142 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1143 LC_ALL=C sort
1144 System.map: u-boot
1145 @$(call SYSTEM_MAP,$<) > $@
1146
1147 checkdtc:
1148 @if test $(call dtc-version) -lt 0104; then \
1149 echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
1150 false; \
1151 fi
1152
1153 #########################################################################
1154
1155 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1156 # R_AARCH64_RELATIVE (64-bit).
1157 checkarmreloc: u-boot
1158 @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1159 grep R_A | sort -u`"; \
1160 if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1161 "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1162 echo "$< contains unexpected relocations: $$RELOC"; \
1163 false; \
1164 fi
1165
1166 env: scripts_basic
1167 $(Q)$(MAKE) $(build)=tools/$@
1168
1169 tools-only: scripts_basic $(version_h) $(timestamp_h)
1170 $(Q)$(MAKE) $(build)=tools
1171
1172 tools-all: export HOST_TOOLS_ALL=y
1173 tools-all: env tools ;
1174
1175 cross_tools: export CROSS_BUILD_TOOLS=y
1176 cross_tools: tools ;
1177
1178 .PHONY : CHANGELOG
1179 CHANGELOG:
1180 git log --no-merges U-Boot-1_1_5.. | \
1181 unexpand -a | sed -e 's/\s\s*$$//' > $@
1182
1183 include/license.h: tools/bin2header COPYING
1184 cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h
1185 #########################################################################
1186
1187 ###
1188 # Cleaning is done on three levels.
1189 # make clean Delete most generated files
1190 # Leave enough to build external modules
1191 # make mrproper Delete the current configuration, and all generated files
1192 # make distclean Remove editor backup files, patch leftover files and the like
1193
1194 # Directories & files removed with 'make clean'
1195 CLEAN_DIRS += $(MODVERDIR)
1196 CLEAN_FILES += u-boot.lds include/bmp_logo.h include/bmp_logo_data.h \
1197 include/autoconf.mk* include/spl-autoconf.mk \
1198 include/tpl-autoconf.mk
1199
1200 # Directories & files removed with 'make clobber'
1201 CLOBBER_DIRS += $(patsubst %,spl/%, $(filter-out Makefile, \
1202 $(shell ls -1 spl 2>/dev/null))) \
1203 tpl
1204 CLOBBER_FILES += u-boot* MLO* SPL System.map nand_spl/u-boot*
1205
1206 # Directories & files removed with 'make mrproper'
1207 MRPROPER_DIRS += include/config include/generated \
1208 .tmp_objdiff
1209 MRPROPER_FILES += .config .config.old \
1210 tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1211 include/config.h include/config.mk
1212
1213 # clean - Delete most, but leave enough to build external modules
1214 #
1215 clean: rm-dirs := $(CLEAN_DIRS)
1216 clean: rm-files := $(CLEAN_FILES)
1217
1218 clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
1219
1220 clean-dirs := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
1221
1222 PHONY += $(clean-dirs) clean archclean
1223 $(clean-dirs):
1224 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1225
1226 # TODO: Do not use *.cfgtmp
1227 clean: $(clean-dirs)
1228 $(call cmd,rmdirs)
1229 $(call cmd,rmfiles)
1230 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1231 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1232 -o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
1233 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1234 -o -name '*.symtypes' -o -name 'modules.order' \
1235 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1236 -o -name '*.gcno' \) -type f -print | xargs rm -f
1237 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1238 -path './nand_spl/*' -type l -print | xargs rm -f
1239
1240 # clobber
1241 #
1242 clobber: rm-dirs := $(CLOBBER_DIRS)
1243 clobber: rm-files := $(CLOBBER_FILES)
1244
1245 PHONY += clobber
1246
1247 clobber: clean
1248 $(call cmd,rmdirs)
1249 $(call cmd,rmfiles)
1250
1251 # mrproper - Delete all generated files, including .config
1252 #
1253 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1254 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1255 mrproper-dirs := $(addprefix _mrproper_,scripts)
1256
1257 PHONY += $(mrproper-dirs) mrproper archmrproper
1258 $(mrproper-dirs):
1259 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1260
1261 mrproper: clobber $(mrproper-dirs)
1262 $(call cmd,rmdirs)
1263 $(call cmd,rmfiles)
1264 @rm -f arch/*/include/asm/arch arch/*/include/asm/proc
1265
1266 # distclean
1267 #
1268 PHONY += distclean
1269
1270 distclean: mrproper
1271 @find $(srctree) $(RCS_FIND_IGNORE) \
1272 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1273 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1274 -o -name '.*.rej' -o -name '*%' -o -name 'core' \
1275 -o -name '*.pyc' \) \
1276 -type f -print | xargs rm -f
1277
1278 backup:
1279 F=`basename $(srctree)` ; cd .. ; \
1280 gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1281
1282 help:
1283 @echo 'Cleaning targets:'
1284 @echo ' clean - Remove most generated files but keep the config and'
1285 @echo ' necessities for testing u-boot'
1286 @echo ' clobber - Remove most generated files but keep the config'
1287 @echo ' mrproper - Remove all generated files + config + various backup files'
1288 @echo ' distclean - mrproper + remove editor backup and patch files'
1289 @echo ''
1290 # uncomment after adding Kconfig feature
1291 # @echo 'Configuration targets:'
1292 # @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1293 # @echo ''
1294 @echo 'Other generic targets:'
1295 @echo ' all - Build all necessary images depending on configuration'
1296 @echo ' u-boot - Build the bare u-boot'
1297 @echo ' dir/ - Build all files in dir and below'
1298 @echo ' dir/file.[oisS] - Build specified target only'
1299 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1300 @echo ' (requires a recent binutils and recent build (System.map))'
1301 @echo ' tags/TAGS - Generate tags file for editors'
1302 @echo ' cscope - Generate cscope index'
1303 @echo ' ubootrelease - Output the release version string'
1304 @echo ' ubootversion - Output the version stored in Makefile'
1305 @echo ''
1306 @echo 'Static analysers'
1307 @echo ' checkstack - Generate a list of stack hogs'
1308 @echo ''
1309 @echo 'Documentation targets:'
1310 @$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
1311 @echo ''
1312 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1313 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1314 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1315 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1316 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1317 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1318 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1319 @echo ' 1: warnings which may be relevant and do not occur too often'
1320 @echo ' 2: warnings which occur quite often but may still be relevant'
1321 @echo ' 3: more obscure warnings, can most likely be ignored'
1322 @echo ' Multiple levels can be combined with W=12 or W=123'
1323 @echo ''
1324 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1325 @echo 'For further info see the ./README file'
1326
1327
1328 # Documentation targets
1329 # ---------------------------------------------------------------------------
1330 %docs: scripts_basic FORCE
1331 $(Q)$(MAKE) $(build)=scripts build_docproc
1332 $(Q)$(MAKE) $(build)=doc/DocBook $@
1333
1334 # Dummies...
1335 PHONY += prepare scripts
1336 prepare: ;
1337 scripts: ;
1338
1339 endif #ifeq ($(config-targets),1)
1340 endif #ifeq ($(mixed-targets),1)
1341
1342 PHONY += checkstack ubootrelease ubootversion
1343
1344 checkstack:
1345 $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1346 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1347
1348 ubootrelease:
1349 @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1350
1351 ubootversion:
1352 @echo $(UBOOTVERSION)
1353
1354 # Single targets
1355 # ---------------------------------------------------------------------------
1356 # Single targets are compatible with:
1357 # - build with mixed source and output
1358 # - build with separate output dir 'make O=...'
1359 # - external modules
1360 #
1361 # target-dir => where to store outputfile
1362 # build-dir => directory in kernel source tree to use
1363
1364 ifeq ($(KBUILD_EXTMOD),)
1365 build-dir = $(patsubst %/,%,$(dir $@))
1366 target-dir = $(dir $@)
1367 else
1368 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1369 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1370 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1371 endif
1372
1373 %.s: %.c prepare scripts FORCE
1374 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1375 %.i: %.c prepare scripts FORCE
1376 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1377 %.o: %.c prepare scripts FORCE
1378 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1379 %.lst: %.c prepare scripts FORCE
1380 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1381 %.s: %.S prepare scripts FORCE
1382 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1383 %.o: %.S prepare scripts FORCE
1384 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1385 %.symtypes: %.c prepare scripts FORCE
1386 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1387
1388 # Modules
1389 /: prepare scripts FORCE
1390 $(cmd_crmodverdir)
1391 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1392 $(build)=$(build-dir)
1393 %/: prepare scripts FORCE
1394 $(cmd_crmodverdir)
1395 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1396 $(build)=$(build-dir)
1397 %.ko: prepare scripts FORCE
1398 $(cmd_crmodverdir)
1399 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1400 $(build)=$(build-dir) $(@:.ko=.o)
1401 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1402
1403 # FIXME Should go into a make.lib or something
1404 # ===========================================================================
1405
1406 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1407 cmd_rmdirs = rm -rf $(rm-dirs)
1408
1409 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1410 cmd_rmfiles = rm -f $(rm-files)
1411
1412 # read all saved command lines
1413
1414 targets := $(wildcard $(sort $(targets)))
1415 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1416
1417 ifneq ($(cmd_files),)
1418 $(cmd_files): ; # Do not try to update included dependency files
1419 include $(cmd_files)
1420 endif
1421
1422 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1423 # Usage:
1424 # $(Q)$(MAKE) $(clean)=dir
1425 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1426
1427 endif # skip-makefile
1428
1429 PHONY += FORCE
1430 FORCE:
1431
1432 # Declare the contents of the .PHONY variable as phony. We keep that
1433 # information in a variable so we can use it in if_changed and friends.
1434 .PHONY: $(PHONY)
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