Makefile 53 KB

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  1. #
  2. # SPDX-License-Identifier: GPL-2.0+
  3. #
  4. VERSION = 2017
  5. PATCHLEVEL = 03
  6. SUBLEVEL =
  7. EXTRAVERSION = -rc1
  8. NAME =
  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. # o Do not use make's built-in rules and variables
  15. # (this increases performance and avoids hard-to-debug behaviour);
  16. # o Look for make include files relative to root of kernel src
  17. MAKEFLAGS += -rR --include-dir=$(CURDIR)
  18. # Avoid funny character set dependencies
  19. unexport LC_ALL
  20. LC_COLLATE=C
  21. LC_NUMERIC=C
  22. export LC_COLLATE LC_NUMERIC
  23. # Avoid interference with shell env settings
  24. unexport GREP_OPTIONS
  25. # We are using a recursive build, so we need to do a little thinking
  26. # to get the ordering right.
  27. #
  28. # Most importantly: sub-Makefiles should only ever modify files in
  29. # their own directory. If in some directory we have a dependency on
  30. # a file in another dir (which doesn't happen often, but it's often
  31. # unavoidable when linking the built-in.o targets which finally
  32. # turn into vmlinux), we will call a sub make in that other dir, and
  33. # after that we are sure that everything which is in that other dir
  34. # is now up to date.
  35. #
  36. # The only cases where we need to modify files which have global
  37. # effects are thus separated out and done before the recursive
  38. # descending is started. They are now explicitly listed as the
  39. # prepare rule.
  40. # Beautify output
  41. # ---------------------------------------------------------------------------
  42. #
  43. # Normally, we echo the whole command before executing it. By making
  44. # that echo $($(quiet)$(cmd)), we now have the possibility to set
  45. # $(quiet) to choose other forms of output instead, e.g.
  46. #
  47. # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
  48. # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
  49. #
  50. # If $(quiet) is empty, the whole command will be printed.
  51. # If it is set to "quiet_", only the short version will be printed.
  52. # If it is set to "silent_", nothing will be printed at all, since
  53. # the variable $(silent_cmd_cc_o_c) doesn't exist.
  54. #
  55. # A simple variant is to prefix commands with $(Q) - that's useful
  56. # for commands that shall be hidden in non-verbose mode.
  57. #
  58. # $(Q)ln $@ :<
  59. #
  60. # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
  61. # If KBUILD_VERBOSE equals 1 then the above command is displayed.
  62. #
  63. # To put more focus on warnings, be less verbose as default
  64. # Use 'make V=1' to see the full commands
  65. ifeq ("$(origin V)", "command line")
  66. KBUILD_VERBOSE = $(V)
  67. endif
  68. ifndef KBUILD_VERBOSE
  69. KBUILD_VERBOSE = 0
  70. endif
  71. ifeq ($(KBUILD_VERBOSE),1)
  72. quiet =
  73. Q =
  74. else
  75. quiet=quiet_
  76. Q = @
  77. endif
  78. # If the user is running make -s (silent mode), suppress echoing of
  79. # commands
  80. ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4
  81. ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
  82. quiet=silent_
  83. endif
  84. else # make-3.8x
  85. ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
  86. quiet=silent_
  87. endif
  88. endif
  89. export quiet Q KBUILD_VERBOSE
  90. # kbuild supports saving output files in a separate directory.
  91. # To locate output files in a separate directory two syntaxes are supported.
  92. # In both cases the working directory must be the root of the kernel src.
  93. # 1) O=
  94. # Use "make O=dir/to/store/output/files/"
  95. #
  96. # 2) Set KBUILD_OUTPUT
  97. # Set the environment variable KBUILD_OUTPUT to point to the directory
  98. # where the output files shall be placed.
  99. # export KBUILD_OUTPUT=dir/to/store/output/files/
  100. # make
  101. #
  102. # The O= assignment takes precedence over the KBUILD_OUTPUT environment
  103. # variable.
  104. # KBUILD_SRC is set on invocation of make in OBJ directory
  105. # KBUILD_SRC is not intended to be used by the regular user (for now)
  106. ifeq ($(KBUILD_SRC),)
  107. # OK, Make called in directory where kernel src resides
  108. # Do we want to locate output files in a separate directory?
  109. ifeq ("$(origin O)", "command line")
  110. KBUILD_OUTPUT := $(O)
  111. endif
  112. # That's our default target when none is given on the command line
  113. PHONY := _all
  114. _all:
  115. # Cancel implicit rules on top Makefile
  116. $(CURDIR)/Makefile Makefile: ;
  117. ifneq ($(KBUILD_OUTPUT),)
  118. # Invoke a second make in the output directory, passing relevant variables
  119. # check that the output directory actually exists
  120. saved-output := $(KBUILD_OUTPUT)
  121. KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
  122. && /bin/pwd)
  123. $(if $(KBUILD_OUTPUT),, \
  124. $(error failed to create output directory "$(saved-output)"))
  125. PHONY += $(MAKECMDGOALS) sub-make
  126. $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
  127. @:
  128. sub-make: FORCE
  129. $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
  130. -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS))
  131. # Leave processing to above invocation of make
  132. skip-makefile := 1
  133. endif # ifneq ($(KBUILD_OUTPUT),)
  134. endif # ifeq ($(KBUILD_SRC),)
  135. # We process the rest of the Makefile if this is the final invocation of make
  136. ifeq ($(skip-makefile),)
  137. # Do not print "Entering directory ...",
  138. # but we want to display it when entering to the output directory
  139. # so that IDEs/editors are able to understand relative filenames.
  140. MAKEFLAGS += --no-print-directory
  141. # Call a source code checker (by default, "sparse") as part of the
  142. # C compilation.
  143. #
  144. # Use 'make C=1' to enable checking of only re-compiled files.
  145. # Use 'make C=2' to enable checking of *all* source files, regardless
  146. # of whether they are re-compiled or not.
  147. #
  148. # See the file "Documentation/sparse.txt" for more details, including
  149. # where to get the "sparse" utility.
  150. ifeq ("$(origin C)", "command line")
  151. KBUILD_CHECKSRC = $(C)
  152. endif
  153. ifndef KBUILD_CHECKSRC
  154. KBUILD_CHECKSRC = 0
  155. endif
  156. # Use make M=dir to specify directory of external module to build
  157. # Old syntax make ... SUBDIRS=$PWD is still supported
  158. # Setting the environment variable KBUILD_EXTMOD take precedence
  159. ifdef SUBDIRS
  160. KBUILD_EXTMOD ?= $(SUBDIRS)
  161. endif
  162. ifeq ("$(origin M)", "command line")
  163. KBUILD_EXTMOD := $(M)
  164. endif
  165. # If building an external module we do not care about the all: rule
  166. # but instead _all depend on modules
  167. PHONY += all
  168. ifeq ($(KBUILD_EXTMOD),)
  169. _all: all
  170. else
  171. _all: modules
  172. endif
  173. ifeq ($(KBUILD_SRC),)
  174. # building in the source tree
  175. srctree := .
  176. else
  177. ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
  178. # building in a subdirectory of the source tree
  179. srctree := ..
  180. else
  181. srctree := $(KBUILD_SRC)
  182. endif
  183. endif
  184. objtree := .
  185. src := $(srctree)
  186. obj := $(objtree)
  187. VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
  188. export srctree objtree VPATH
  189. # Make sure CDPATH settings don't interfere
  190. unexport CDPATH
  191. #########################################################################
  192. HOSTARCH := $(shell uname -m | \
  193. sed -e s/i.86/x86/ \
  194. -e s/sun4u/sparc64/ \
  195. -e s/arm.*/arm/ \
  196. -e s/sa110/arm/ \
  197. -e s/ppc64/powerpc/ \
  198. -e s/ppc/powerpc/ \
  199. -e s/macppc/powerpc/\
  200. -e s/sh.*/sh/)
  201. HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
  202. sed -e 's/\(cygwin\).*/cygwin/')
  203. export HOSTARCH HOSTOS
  204. #########################################################################
  205. # set default to nothing for native builds
  206. ifeq ($(HOSTARCH),$(ARCH))
  207. CROSS_COMPILE ?=
  208. endif
  209. KCONFIG_CONFIG ?= .config
  210. export KCONFIG_CONFIG
  211. # SHELL used by kbuild
  212. CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
  213. else if [ -x /bin/bash ]; then echo /bin/bash; \
  214. else echo sh; fi ; fi)
  215. HOSTCC = cc
  216. HOSTCXX = c++
  217. HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \
  218. $(if $(CONFIG_TOOLS_DEBUG),-g)
  219. HOSTCXXFLAGS = -O2
  220. ifeq ($(HOSTOS),cygwin)
  221. HOSTCFLAGS += -ansi
  222. endif
  223. # Mac OS X / Darwin's C preprocessor is Apple specific. It
  224. # generates numerous errors and warnings. We want to bypass it
  225. # and use GNU C's cpp. To do this we pass the -traditional-cpp
  226. # option to the compiler. Note that the -traditional-cpp flag
  227. # DOES NOT have the same semantics as GNU C's flag, all it does
  228. # is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
  229. #
  230. # Apple's linker is similar, thanks to the new 2 stage linking
  231. # multiple symbol definitions are treated as errors, hence the
  232. # -multiply_defined suppress option to turn off this error.
  233. #
  234. ifeq ($(HOSTOS),darwin)
  235. # get major and minor product version (e.g. '10' and '6' for Snow Leopard)
  236. DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.')
  237. DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.')
  238. os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
  239. $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
  240. # Snow Leopards build environment has no longer restrictions as described above
  241. HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc")
  242. HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp")
  243. HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
  244. # since Lion (10.7) ASLR is on by default, but we use linker generated lists
  245. # in some host tools which is a problem then ... so disable ASLR for these
  246. # tools
  247. HOSTLDFLAGS += $(call os_x_before, 10, 7, "", "-Xlinker -no_pie")
  248. endif
  249. # Decide whether to build built-in, modular, or both.
  250. # Normally, just do built-in.
  251. KBUILD_MODULES :=
  252. KBUILD_BUILTIN := 1
  253. # If we have only "make modules", don't compile built-in objects.
  254. # When we're building modules with modversions, we need to consider
  255. # the built-in objects during the descend as well, in order to
  256. # make sure the checksums are up to date before we record them.
  257. ifeq ($(MAKECMDGOALS),modules)
  258. KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
  259. endif
  260. # If we have "make <whatever> modules", compile modules
  261. # in addition to whatever we do anyway.
  262. # Just "make" or "make all" shall build modules as well
  263. # U-Boot does not need modules
  264. #ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
  265. # KBUILD_MODULES := 1
  266. #endif
  267. #ifeq ($(MAKECMDGOALS),)
  268. # KBUILD_MODULES := 1
  269. #endif
  270. export KBUILD_MODULES KBUILD_BUILTIN
  271. export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
  272. # We need some generic definitions (do not try to remake the file).
  273. scripts/Kbuild.include: ;
  274. include scripts/Kbuild.include
  275. # Make variables (CC, etc...)
  276. AS = $(CROSS_COMPILE)as
  277. # Always use GNU ld
  278. ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
  279. LD = $(CROSS_COMPILE)ld.bfd
  280. else
  281. LD = $(CROSS_COMPILE)ld
  282. endif
  283. CC = $(CROSS_COMPILE)gcc
  284. CPP = $(CC) -E
  285. AR = $(CROSS_COMPILE)ar
  286. NM = $(CROSS_COMPILE)nm
  287. LDR = $(CROSS_COMPILE)ldr
  288. STRIP = $(CROSS_COMPILE)strip
  289. OBJCOPY = $(CROSS_COMPILE)objcopy
  290. OBJDUMP = $(CROSS_COMPILE)objdump
  291. AWK = awk
  292. PERL = perl
  293. PYTHON = python
  294. DTC = dtc
  295. CHECK = sparse
  296. CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
  297. -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
  298. KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__
  299. KBUILD_CFLAGS := -Wall -Wstrict-prototypes \
  300. -Wno-format-security \
  301. -fno-builtin -ffreestanding
  302. KBUILD_AFLAGS := -D__ASSEMBLY__
  303. # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
  304. UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
  305. UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
  306. export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
  307. export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
  308. export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
  309. export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
  310. export MAKE AWK PERL PYTHON
  311. export HOSTCXX HOSTCXXFLAGS DTC CHECK CHECKFLAGS
  312. export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
  313. export KBUILD_CFLAGS KBUILD_AFLAGS
  314. # When compiling out-of-tree modules, put MODVERDIR in the module
  315. # tree rather than in the kernel tree. The kernel tree might
  316. # even be read-only.
  317. export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
  318. # Files to ignore in find ... statements
  319. export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
  320. -name CVS -o -name .pc -o -name .hg -o -name .git \) \
  321. -prune -o
  322. export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
  323. --exclude CVS --exclude .pc --exclude .hg --exclude .git
  324. # ===========================================================================
  325. # Rules shared between *config targets and build targets
  326. # Basic helpers built in scripts/
  327. PHONY += scripts_basic
  328. scripts_basic:
  329. $(Q)$(MAKE) $(build)=scripts/basic
  330. $(Q)rm -f .tmp_quiet_recordmcount
  331. # To avoid any implicit rule to kick in, define an empty command.
  332. scripts/basic/%: scripts_basic ;
  333. PHONY += outputmakefile
  334. # outputmakefile generates a Makefile in the output directory, if using a
  335. # separate output directory. This allows convenient use of make in the
  336. # output directory.
  337. outputmakefile:
  338. ifneq ($(KBUILD_SRC),)
  339. $(Q)ln -fsn $(srctree) source
  340. $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
  341. $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
  342. endif
  343. # To make sure we do not include .config for any of the *config targets
  344. # catch them early, and hand them over to scripts/kconfig/Makefile
  345. # It is allowed to specify more targets when calling make, including
  346. # mixing *config targets and build targets.
  347. # For example 'make oldconfig all'.
  348. # Detect when mixed targets is specified, and make a second invocation
  349. # of make so .config is not included in this case either (for *config).
  350. version_h := include/generated/version_autogenerated.h
  351. timestamp_h := include/generated/timestamp_autogenerated.h
  352. no-dot-config-targets := clean clobber mrproper distclean \
  353. help %docs check% coccicheck \
  354. ubootversion backup tests
  355. config-targets := 0
  356. mixed-targets := 0
  357. dot-config := 1
  358. ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
  359. ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
  360. dot-config := 0
  361. endif
  362. endif
  363. ifeq ($(KBUILD_EXTMOD),)
  364. ifneq ($(filter config %config,$(MAKECMDGOALS)),)
  365. config-targets := 1
  366. ifneq ($(words $(MAKECMDGOALS)),1)
  367. mixed-targets := 1
  368. endif
  369. endif
  370. endif
  371. ifeq ($(mixed-targets),1)
  372. # ===========================================================================
  373. # We're called with mixed targets (*config and build targets).
  374. # Handle them one by one.
  375. PHONY += $(MAKECMDGOALS) __build_one_by_one
  376. $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
  377. @:
  378. __build_one_by_one:
  379. $(Q)set -e; \
  380. for i in $(MAKECMDGOALS); do \
  381. $(MAKE) -f $(srctree)/Makefile $$i; \
  382. done
  383. else
  384. ifeq ($(config-targets),1)
  385. # ===========================================================================
  386. # *config targets only - make sure prerequisites are updated, and descend
  387. # in scripts/kconfig to make the *config target
  388. KBUILD_DEFCONFIG := sandbox_defconfig
  389. export KBUILD_DEFCONFIG KBUILD_KCONFIG
  390. config: scripts_basic outputmakefile FORCE
  391. $(Q)$(MAKE) $(build)=scripts/kconfig $@
  392. %config: scripts_basic outputmakefile FORCE
  393. $(Q)$(MAKE) $(build)=scripts/kconfig $@
  394. else
  395. # ===========================================================================
  396. # Build targets only - this includes vmlinux, arch specific targets, clean
  397. # targets and others. In general all targets except *config targets.
  398. ifeq ($(dot-config),1)
  399. # Read in config
  400. -include include/config/auto.conf
  401. # Read in dependencies to all Kconfig* files, make sure to run
  402. # oldconfig if changes are detected.
  403. -include include/config/auto.conf.cmd
  404. # To avoid any implicit rule to kick in, define an empty command
  405. $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
  406. # If .config is newer than include/config/auto.conf, someone tinkered
  407. # with it and forgot to run make oldconfig.
  408. # if auto.conf.cmd is missing then we are probably in a cleaned tree so
  409. # we execute the config step to be sure to catch updated Kconfig files
  410. include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
  411. $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
  412. @# If the following part fails, include/config/auto.conf should be
  413. @# deleted so "make silentoldconfig" will be re-run on the next build.
  414. $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf || \
  415. { rm -f include/config/auto.conf; false; }
  416. @# include/config.h has been updated after "make silentoldconfig".
  417. @# We need to touch include/config/auto.conf so it gets newer
  418. @# than include/config.h.
  419. @# Otherwise, 'make silentoldconfig' would be invoked twice.
  420. $(Q)touch include/config/auto.conf
  421. -include include/autoconf.mk
  422. -include include/autoconf.mk.dep
  423. # We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf
  424. # is up-to-date. When we switch to a different board configuration, old CONFIG
  425. # macros are still remaining in include/config/auto.conf. Without the following
  426. # gimmick, wrong config.mk would be included leading nasty warnings/errors.
  427. ifneq ($(wildcard $(KCONFIG_CONFIG)),)
  428. ifneq ($(wildcard include/config/auto.conf),)
  429. autoconf_is_old := $(shell find . -path ./$(KCONFIG_CONFIG) -newer \
  430. include/config/auto.conf)
  431. ifeq ($(autoconf_is_old),)
  432. include config.mk
  433. include arch/$(ARCH)/Makefile
  434. endif
  435. endif
  436. endif
  437. # These are set by the arch-specific config.mk. Make sure they are exported
  438. # so they can be used when building an EFI application.
  439. export EFI_LDS # Filename of EFI link script in arch/$(ARCH)/lib
  440. export EFI_CRT0 # Filename of EFI CRT0 in arch/$(ARCH)/lib
  441. export EFI_RELOC # Filename of EFU relocation code in arch/$(ARCH)/lib
  442. export CFLAGS_EFI # Compiler flags to add when building EFI app
  443. export CFLAGS_NON_EFI # Compiler flags to remove when building EFI app
  444. export EFI_TARGET # binutils target if EFI is natively supported
  445. # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
  446. # that (or fail if absent). Otherwise, search for a linker script in a
  447. # standard location.
  448. ifndef LDSCRIPT
  449. #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
  450. ifdef CONFIG_SYS_LDSCRIPT
  451. # need to strip off double quotes
  452. LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
  453. endif
  454. endif
  455. # If there is no specified link script, we look in a number of places for it
  456. ifndef LDSCRIPT
  457. ifeq ($(wildcard $(LDSCRIPT)),)
  458. LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
  459. endif
  460. ifeq ($(wildcard $(LDSCRIPT)),)
  461. LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
  462. endif
  463. ifeq ($(wildcard $(LDSCRIPT)),)
  464. LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
  465. endif
  466. endif
  467. else
  468. # Dummy target needed, because used as prerequisite
  469. include/config/auto.conf: ;
  470. endif # $(dot-config)
  471. #
  472. # Xtensa linker script cannot be preprocessed with -ansi because of
  473. # preprocessor operations on strings that don't make C identifiers.
  474. #
  475. ifeq ($(CONFIG_XTENSA),)
  476. LDPPFLAGS += -ansi
  477. endif
  478. ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
  479. KBUILD_CFLAGS += -Os
  480. else
  481. KBUILD_CFLAGS += -O2
  482. endif
  483. KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
  484. KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks)
  485. KBUILD_CFLAGS += -g
  486. # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
  487. # option to the assembler.
  488. KBUILD_AFLAGS += -g
  489. # Report stack usage if supported
  490. ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
  491. KBUILD_CFLAGS += -fstack-usage
  492. endif
  493. KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
  494. # turn jbsr into jsr for m68k
  495. ifeq ($(ARCH),m68k)
  496. ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
  497. KBUILD_AFLAGS += -Wa,-gstabs,-S
  498. endif
  499. endif
  500. # Prohibit date/time macros, which would make the build non-deterministic
  501. KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
  502. include scripts/Makefile.extrawarn
  503. # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
  504. KBUILD_CPPFLAGS += $(KCPPFLAGS)
  505. KBUILD_AFLAGS += $(KAFLAGS)
  506. KBUILD_CFLAGS += $(KCFLAGS)
  507. # Use UBOOTINCLUDE when you must reference the include/ directory.
  508. # Needed to be compatible with the O= option
  509. UBOOTINCLUDE := \
  510. -Iinclude \
  511. $(if $(KBUILD_SRC), -I$(srctree)/include) \
  512. $(if $(CONFIG_SYS_THUMB_BUILD), $(if $(CONFIG_HAS_THUMB2),, \
  513. -I$(srctree)/arch/$(ARCH)/thumb1/include),) \
  514. -I$(srctree)/arch/$(ARCH)/include \
  515. -include $(srctree)/include/linux/kconfig.h
  516. NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
  517. CHECKFLAGS += $(NOSTDINC_FLAGS)
  518. # FIX ME
  519. cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
  520. $(NOSTDINC_FLAGS)
  521. c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
  522. #########################################################################
  523. # U-Boot objects....order is important (i.e. start must be first)
  524. HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
  525. libs-y += lib/
  526. libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
  527. libs-$(CONFIG_OF_EMBED) += dts/
  528. libs-y += fs/
  529. libs-y += net/
  530. libs-y += disk/
  531. libs-y += drivers/
  532. libs-y += drivers/dma/
  533. libs-y += drivers/gpio/
  534. libs-y += drivers/i2c/
  535. libs-y += drivers/mmc/
  536. libs-y += drivers/mtd/
  537. libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
  538. libs-y += drivers/mtd/onenand/
  539. libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
  540. libs-y += drivers/mtd/spi/
  541. libs-y += drivers/net/
  542. libs-y += drivers/net/phy/
  543. libs-y += drivers/pci/
  544. libs-y += drivers/power/ \
  545. drivers/power/domain/ \
  546. drivers/power/fuel_gauge/ \
  547. drivers/power/mfd/ \
  548. drivers/power/pmic/ \
  549. drivers/power/battery/ \
  550. drivers/power/regulator/
  551. libs-y += drivers/spi/
  552. libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
  553. libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
  554. libs-$(CONFIG_SYS_FSL_MMDC) += drivers/ddr/fsl/
  555. libs-$(CONFIG_ALTERA_SDRAM) += drivers/ddr/altera/
  556. libs-y += drivers/serial/
  557. libs-y += drivers/usb/dwc3/
  558. libs-y += drivers/usb/common/
  559. libs-y += drivers/usb/emul/
  560. libs-y += drivers/usb/eth/
  561. libs-y += drivers/usb/gadget/
  562. libs-y += drivers/usb/gadget/udc/
  563. libs-y += drivers/usb/host/
  564. libs-y += drivers/usb/musb/
  565. libs-y += drivers/usb/musb-new/
  566. libs-y += drivers/usb/phy/
  567. libs-y += drivers/usb/ulpi/
  568. libs-y += cmd/
  569. libs-y += common/
  570. libs-$(CONFIG_API) += api/
  571. libs-$(CONFIG_HAS_POST) += post/
  572. libs-y += test/
  573. libs-y += test/dm/
  574. libs-$(CONFIG_UT_ENV) += test/env/
  575. libs-$(CONFIG_UT_OVERLAY) += test/overlay/
  576. libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
  577. libs-y := $(sort $(libs-y))
  578. u-boot-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
  579. u-boot-alldirs := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
  580. libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
  581. u-boot-init := $(head-y)
  582. u-boot-main := $(libs-y)
  583. # Add GCC lib
  584. ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
  585. PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
  586. else
  587. PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
  588. endif
  589. PLATFORM_LIBS += $(PLATFORM_LIBGCC)
  590. export PLATFORM_LIBS
  591. export PLATFORM_LIBGCC
  592. # Special flags for CPP when processing the linker script.
  593. # Pass the version down so we can handle backwards compatibility
  594. # on the fly.
  595. LDPPFLAGS += \
  596. -include $(srctree)/include/u-boot/u-boot.lds.h \
  597. -DCPUDIR=$(CPUDIR) \
  598. $(shell $(LD) --version | \
  599. sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
  600. #########################################################################
  601. #########################################################################
  602. ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
  603. BOARD_SIZE_CHECK = \
  604. @actual=`wc -c $@ | awk '{print $$1}'`; \
  605. limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
  606. if test $$actual -gt $$limit; then \
  607. echo "$@ exceeds file size limit:" >&2 ; \
  608. echo " limit: $$limit bytes" >&2 ; \
  609. echo " actual: $$actual bytes" >&2 ; \
  610. echo " excess: $$((actual - limit)) bytes" >&2; \
  611. exit 1; \
  612. fi
  613. else
  614. BOARD_SIZE_CHECK =
  615. endif
  616. # Statically apply RELA-style relocations (currently arm64 only)
  617. ifneq ($(CONFIG_STATIC_RELA),)
  618. # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
  619. DO_STATIC_RELA = \
  620. start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
  621. end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
  622. tools/relocate-rela $(2) $(3) $$start $$end
  623. else
  624. DO_STATIC_RELA =
  625. endif
  626. # Always append ALL so that arch config.mk's can add custom ones
  627. ALL-y += u-boot.srec u-boot.bin u-boot.sym System.map binary_size_check
  628. ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
  629. ifeq ($(CONFIG_SPL_FSL_PBL),y)
  630. ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
  631. else
  632. ifneq ($(CONFIG_SECURE_BOOT), y)
  633. # For Secure Boot The Image needs to be signed and Header must also
  634. # be included. So The image has to be built explicitly
  635. ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
  636. endif
  637. endif
  638. ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
  639. ifeq ($(CONFIG_MX6)$(CONFIG_SECURE_BOOT), yy)
  640. ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot-ivt.img
  641. else
  642. ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
  643. endif
  644. ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
  645. ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb
  646. ifeq ($(CONFIG_SPL_FRAMEWORK),y)
  647. ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
  648. endif
  649. ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
  650. ifneq ($(CONFIG_SPL_TARGET),)
  651. ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
  652. endif
  653. ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
  654. ALL-$(CONFIG_EFI_APP) += u-boot-app.efi
  655. ALL-$(CONFIG_EFI_STUB) += u-boot-payload.efi
  656. ifneq ($(BUILD_ROM),)
  657. ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
  658. endif
  659. # enable combined SPL/u-boot/dtb rules for tegra
  660. ifeq ($(CONFIG_TEGRA)$(CONFIG_SPL),yy)
  661. ALL-y += u-boot-tegra.bin u-boot-nodtb-tegra.bin
  662. ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb-tegra.bin
  663. endif
  664. # Add optional build target if defined in board/cpu/soc headers
  665. ifneq ($(CONFIG_BUILD_TARGET),)
  666. ALL-y += $(CONFIG_BUILD_TARGET:"%"=%)
  667. endif
  668. LDFLAGS_u-boot += $(LDFLAGS_FINAL)
  669. ifneq ($(CONFIG_SYS_TEXT_BASE),)
  670. LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
  671. endif
  672. # Normally we fill empty space with 0xff
  673. quiet_cmd_objcopy = OBJCOPY $@
  674. cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \
  675. $(OBJCOPYFLAGS_$(@F)) $< $@
  676. # Provide a version which does not do this, for use by EFI
  677. quiet_cmd_zobjcopy = OBJCOPY $@
  678. cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
  679. quiet_cmd_efipayload = OBJCOPY $@
  680. cmd_efipayload = $(OBJCOPY) -I binary -O $(EFIPAYLOAD_BFDTARGET) -B $(EFIPAYLOAD_BFDARCH) $< $@
  681. MKIMAGEOUTPUT ?= /dev/null
  682. quiet_cmd_mkimage = MKIMAGE $@
  683. cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
  684. $(if $(KBUILD_VERBOSE:1=), >$(MKIMAGEOUTPUT))
  685. quiet_cmd_cat = CAT $@
  686. cmd_cat = cat $(filter-out $(PHONY), $^) > $@
  687. append = cat $(filter-out $< $(PHONY), $^) >> $@
  688. quiet_cmd_pad_cat = CAT $@
  689. cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
  690. cfg: u-boot.cfg
  691. all: $(ALL-y)
  692. ifeq ($(CONFIG_DM_I2C_COMPAT)$(CONFIG_SANDBOX),y)
  693. @echo "===================== WARNING ======================"
  694. @echo "This board uses CONFIG_DM_I2C_COMPAT. Please remove"
  695. @echo "(possibly in a subsequent patch in your series)"
  696. @echo "before sending patches to the mailing list."
  697. @echo "===================================================="
  698. endif
  699. @# Check that this build does not use CONFIG options that we do not
  700. @# know about unless they are in Kconfig. All the existing CONFIG
  701. @# options are whitelisted, so new ones should not be added.
  702. $(srctree)/scripts/check-config.sh u-boot.cfg \
  703. $(srctree)/scripts/config_whitelist.txt ${srctree} 1>&2
  704. PHONY += dtbs
  705. dtbs: dts/dt.dtb
  706. @:
  707. dts/dt.dtb: checkdtc u-boot
  708. $(Q)$(MAKE) $(build)=dts dtbs
  709. quiet_cmd_copy = COPY $@
  710. cmd_copy = cp $< $@
  711. ifeq ($(CONFIG_OF_SEPARATE),y)
  712. u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE
  713. $(call if_changed,cat)
  714. u-boot.bin: u-boot-dtb.bin FORCE
  715. $(call if_changed,copy)
  716. else
  717. u-boot.bin: u-boot-nodtb.bin FORCE
  718. $(call if_changed,copy)
  719. endif
  720. %.imx: %.bin
  721. $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
  722. %.vyb: %.imx
  723. $(Q)$(MAKE) $(build)=arch/arm/cpu/armv7/vf610 $@
  724. quiet_cmd_copy = COPY $@
  725. cmd_copy = cp $< $@
  726. u-boot.dtb: dts/dt.dtb
  727. $(call cmd,copy)
  728. OBJCOPYFLAGS_u-boot.hex := -O ihex
  729. OBJCOPYFLAGS_u-boot.srec := -O srec
  730. u-boot.hex u-boot.srec: u-boot FORCE
  731. $(call if_changed,objcopy)
  732. OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \
  733. $(if $(CONFIG_X86_RESET_VECTOR),-R .start16 -R .resetvec)
  734. binary_size_check: u-boot-nodtb.bin FORCE
  735. @file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \
  736. map_size=$(shell cat u-boot.map | \
  737. awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
  738. | sed 's/0X//g' \
  739. | bc); \
  740. if [ "" != "$$map_size" ]; then \
  741. if test $$map_size -ne $$file_size; then \
  742. echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
  743. echo " but u-boot-nodtb.bin shows $$file_size" >&2 ; \
  744. exit 1; \
  745. fi \
  746. fi
  747. u-boot-nodtb.bin: u-boot FORCE
  748. $(call if_changed,objcopy)
  749. $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
  750. $(BOARD_SIZE_CHECK)
  751. u-boot.ldr: u-boot
  752. $(CREATE_LDR_ENV)
  753. $(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS)
  754. $(BOARD_SIZE_CHECK)
  755. # binman
  756. # ---------------------------------------------------------------------------
  757. quiet_cmd_binman = BINMAN $@
  758. cmd_binman = $(srctree)/tools/binman/binman -d u-boot.dtb -O . \
  759. -I . -I $(srctree)/board/$(BOARDDIR) $<
  760. OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
  761. OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
  762. u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
  763. $(call if_changed,objcopy)
  764. #
  765. # U-Boot entry point, needed for booting of full-blown U-Boot
  766. # from the SPL U-Boot version.
  767. #
  768. ifndef CONFIG_SYS_UBOOT_START
  769. CONFIG_SYS_UBOOT_START := 0
  770. endif
  771. # Create a file containing the configuration options the image was built with
  772. quiet_cmd_cpp_cfg = CFG $@
  773. cmd_cpp_cfg = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
  774. -DDO_DEPS_ONLY -D__ASSEMBLY__ -x assembler-with-cpp -P -dM -E -o $@ $<
  775. ifdef CONFIG_SPL_LOAD_FIT
  776. MKIMAGEFLAGS_u-boot.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
  777. -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
  778. -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \
  779. $(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST)))
  780. else
  781. MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
  782. -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
  783. -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
  784. MKIMAGEFLAGS_u-boot-ivt.img = -A $(ARCH) -T firmware_ivt -C none -O u-boot \
  785. -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
  786. -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
  787. u-boot-ivt.img: MKIMAGEOUTPUT = u-boot-ivt.img.log
  788. CLEAN_FILES += u-boot-ivt.img.log u-boot-dtb.imx.log SPL.log u-boot.imx.log
  789. endif
  790. MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
  791. MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
  792. -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
  793. MKIMAGEFLAGS_u-boot-spl.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
  794. -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) \
  795. $(if $(KEYDIR),-k $(KEYDIR))
  796. MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
  797. -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
  798. u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl u-boot-ivt.img: \
  799. $(if $(CONFIG_SPL_LOAD_FIT),u-boot-nodtb.bin dts/dt.dtb,u-boot.bin) FORCE
  800. $(call if_changed,mkimage)
  801. u-boot-spl.kwb: u-boot.img spl/u-boot-spl.bin FORCE
  802. $(call if_changed,mkimage)
  803. u-boot.sha1: u-boot.bin
  804. tools/ubsha1 u-boot.bin
  805. u-boot.dis: u-boot
  806. $(OBJDUMP) -d $< > $@
  807. ifdef CONFIG_TPL
  808. SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
  809. else
  810. SPL_PAYLOAD := u-boot.bin
  811. endif
  812. OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
  813. --pad-to=$(CONFIG_SPL_PAD_TO)
  814. u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
  815. $(call if_changed,pad_cat)
  816. MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE)
  817. lpc32xx-spl.img: spl/u-boot-spl.bin FORCE
  818. $(call if_changed,mkimage)
  819. OBJCOPYFLAGS_lpc32xx-boot-0.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
  820. lpc32xx-boot-0.bin: lpc32xx-spl.img FORCE
  821. $(call if_changed,objcopy)
  822. OBJCOPYFLAGS_lpc32xx-boot-1.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
  823. lpc32xx-boot-1.bin: lpc32xx-spl.img FORCE
  824. $(call if_changed,objcopy)
  825. lpc32xx-full.bin: lpc32xx-boot-0.bin lpc32xx-boot-1.bin u-boot.img FORCE
  826. $(call if_changed,cat)
  827. CLEAN_FILES += lpc32xx-*
  828. OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
  829. --pad-to=$(CONFIG_TPL_PAD_TO)
  830. tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
  831. $(call if_changed,pad_cat)
  832. SPL: spl/u-boot-spl.bin FORCE
  833. $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
  834. u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
  835. $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
  836. MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
  837. u-boot.ubl: u-boot-with-spl.bin FORCE
  838. $(call if_changed,mkimage)
  839. MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
  840. $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
  841. -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
  842. spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
  843. $(call if_changed,mkimage)
  844. OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
  845. u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
  846. $(call if_changed,pad_cat)
  847. u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
  848. $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
  849. u-boot.sb: u-boot.bin spl/u-boot-spl.bin
  850. $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
  851. # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
  852. # Both images are created using mkimage (crc etc), so that the ROM
  853. # bootloader can check its integrity. Padding needs to be done to the
  854. # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
  855. # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
  856. # The resulting image containing both U-Boot images is called u-boot.spr
  857. MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
  858. -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
  859. spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
  860. $(call if_changed,mkimage)
  861. OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
  862. --gap-fill=0xff
  863. u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
  864. $(call if_changed,pad_cat)
  865. ifneq ($(CONFIG_ARCH_SOCFPGA),)
  866. quiet_cmd_socboot = SOCBOOT $@
  867. cmd_socboot = cat spl/u-boot-spl.sfp spl/u-boot-spl.sfp \
  868. spl/u-boot-spl.sfp spl/u-boot-spl.sfp \
  869. u-boot.img > $@ || rm -f $@
  870. u-boot-with-spl.sfp: spl/u-boot-spl.sfp u-boot.img FORCE
  871. $(call if_changed,socboot)
  872. endif
  873. # x86 uses a large ROM. We fill it with 0xff, put the 16-bit stuff (including
  874. # reset vector) at the top, Intel ME descriptor at the bottom, and U-Boot in
  875. # the middle. This is handled by binman based on an image description in the
  876. # board's device tree.
  877. ifneq ($(CONFIG_X86_RESET_VECTOR),)
  878. rom: u-boot.rom FORCE
  879. refcode.bin: $(srctree)/board/$(BOARDDIR)/refcode.bin FORCE
  880. $(call if_changed,copy)
  881. quiet_cmd_ldr = LD $@
  882. cmd_ldr = $(LD) $(LDFLAGS_$(@F)) \
  883. $(filter-out FORCE,$^) -o $@
  884. u-boot.rom: u-boot-x86-16bit.bin u-boot.bin FORCE \
  885. $(if $(CONFIG_HAVE_REFCODE),refcode.bin)
  886. $(call if_changed,binman)
  887. OBJCOPYFLAGS_u-boot-x86-16bit.bin := -O binary -j .start16 -j .resetvec
  888. u-boot-x86-16bit.bin: u-boot FORCE
  889. $(call if_changed,objcopy)
  890. endif
  891. ifneq ($(CONFIG_ARCH_SUNXI),)
  892. u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img u-boot.dtb FORCE
  893. $(call if_changed,binman)
  894. endif
  895. ifneq ($(CONFIG_TEGRA),)
  896. OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
  897. u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot-nodtb.bin FORCE
  898. $(call if_changed,pad_cat)
  899. OBJCOPYFLAGS_u-boot-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
  900. u-boot-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
  901. $(call if_changed,pad_cat)
  902. u-boot-dtb-tegra.bin: u-boot-tegra.bin FORCE
  903. $(call if_changed,copy)
  904. endif
  905. OBJCOPYFLAGS_u-boot-app.efi := $(OBJCOPYFLAGS_EFI)
  906. u-boot-app.efi: u-boot FORCE
  907. $(call if_changed,zobjcopy)
  908. u-boot.bin.o: u-boot.bin FORCE
  909. $(call if_changed,efipayload)
  910. u-boot-payload.lds: $(LDSCRIPT_EFI) FORCE
  911. $(call if_changed_dep,cpp_lds)
  912. # Rule to link the EFI payload which contains a stub and a U-Boot binary
  913. quiet_cmd_u-boot_payload ?= LD $@
  914. cmd_u-boot_payload ?= $(LD) $(LDFLAGS_EFI_PAYLOAD) -o $@ \
  915. -T u-boot-payload.lds arch/x86/cpu/call32.o \
  916. lib/efi/efi.o lib/efi/efi_stub.o u-boot.bin.o \
  917. $(addprefix arch/$(ARCH)/lib/,$(EFISTUB))
  918. u-boot-payload: u-boot.bin.o u-boot-payload.lds FORCE
  919. $(call if_changed,u-boot_payload)
  920. OBJCOPYFLAGS_u-boot-payload.efi := $(OBJCOPYFLAGS_EFI)
  921. u-boot-payload.efi: u-boot-payload FORCE
  922. $(call if_changed,zobjcopy)
  923. u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
  924. $(call if_changed,cat)
  925. #Add a target to create boot binary having SPL binary in PBI format
  926. #concatenated with u-boot binary. It is need by PowerPC SoC having
  927. #internal SRAM <= 512KB.
  928. MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
  929. -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \
  930. -A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE)
  931. spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
  932. $(call if_changed,mkimage)
  933. ifeq ($(ARCH),arm)
  934. UBOOT_BINLOAD := u-boot.img
  935. else
  936. UBOOT_BINLOAD := u-boot.bin
  937. endif
  938. OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
  939. --gap-fill=0xff
  940. u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE
  941. $(call if_changed,pad_cat)
  942. # PPC4xx needs the SPL at the end of the image, since the reset vector
  943. # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
  944. # and need to introduce a new build target with the full blown U-Boot
  945. # at the start padded up to the start of the SPL image. And then concat
  946. # the SPL image to the end.
  947. OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
  948. --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
  949. u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
  950. $(call if_changed,pad_cat)
  951. # Create a new ELF from a raw binary file. This is useful for arm64
  952. # where static relocation needs to be performed on the raw binary,
  953. # but certain simulators only accept an ELF file (but don't do the
  954. # relocation).
  955. # FIXME refactor dts/Makefile to share target/arch detection
  956. u-boot.elf: u-boot.bin
  957. @$(OBJCOPY) -B aarch64 -I binary -O elf64-littleaarch64 \
  958. $< u-boot-elf.o
  959. @$(LD) u-boot-elf.o -o $@ \
  960. --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
  961. -Ttext=$(CONFIG_SYS_TEXT_BASE)
  962. # Rule to link u-boot
  963. # May be overridden by arch/$(ARCH)/config.mk
  964. quiet_cmd_u-boot__ ?= LD $@
  965. cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
  966. -T u-boot.lds $(u-boot-init) \
  967. --start-group $(u-boot-main) --end-group \
  968. $(PLATFORM_LIBS) -Map u-boot.map
  969. quiet_cmd_smap = GEN common/system_map.o
  970. cmd_smap = \
  971. smap=`$(call SYSTEM_MAP,u-boot) | \
  972. awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
  973. $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
  974. -c $(srctree)/common/system_map.c -o common/system_map.o
  975. u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds FORCE
  976. $(call if_changed,u-boot__)
  977. ifeq ($(CONFIG_KALLSYMS),y)
  978. $(call cmd,smap)
  979. $(call cmd,u-boot__) common/system_map.o
  980. endif
  981. quiet_cmd_sym ?= SYM $@
  982. cmd_sym ?= $(OBJDUMP) -t $< > $@
  983. u-boot.sym: u-boot FORCE
  984. $(call if_changed,sym)
  985. # The actual objects are generated when descending,
  986. # make sure no implicit rule kicks in
  987. $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
  988. # Handle descending into subdirectories listed in $(vmlinux-dirs)
  989. # Preset locale variables to speed up the build process. Limit locale
  990. # tweaks to this spot to avoid wrong language settings when running
  991. # make menuconfig etc.
  992. # Error messages still appears in the original language
  993. PHONY += $(u-boot-dirs)
  994. $(u-boot-dirs): prepare scripts
  995. $(Q)$(MAKE) $(build)=$@
  996. tools: prepare
  997. # The "tools" are needed early
  998. $(filter-out tools, $(u-boot-dirs)): tools
  999. # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
  1000. # is "yes"), so compile examples after U-Boot is compiled.
  1001. examples: $(filter-out examples, $(u-boot-dirs))
  1002. define filechk_uboot.release
  1003. echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
  1004. endef
  1005. # Store (new) UBOOTRELEASE string in include/config/uboot.release
  1006. include/config/uboot.release: include/config/auto.conf FORCE
  1007. $(call filechk,uboot.release)
  1008. # Things we need to do before we recursively start building the kernel
  1009. # or the modules are listed in "prepare".
  1010. # A multi level approach is used. prepareN is processed before prepareN-1.
  1011. # archprepare is used in arch Makefiles and when processed asm symlink,
  1012. # version.h and scripts_basic is processed / created.
  1013. # Listed in dependency order
  1014. PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
  1015. # prepare3 is used to check if we are building in a separate output directory,
  1016. # and if so do:
  1017. # 1) Check that make has not been executed in the kernel src $(srctree)
  1018. prepare3: include/config/uboot.release
  1019. ifneq ($(KBUILD_SRC),)
  1020. @$(kecho) ' Using $(srctree) as source for U-Boot'
  1021. $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
  1022. echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
  1023. echo >&2 " in the '$(srctree)' directory.";\
  1024. /bin/false; \
  1025. fi;
  1026. endif
  1027. # prepare2 creates a makefile if using a separate output directory
  1028. prepare2: prepare3 outputmakefile
  1029. prepare1: prepare2 $(version_h) $(timestamp_h) \
  1030. include/config/auto.conf
  1031. ifeq ($(wildcard $(LDSCRIPT)),)
  1032. @echo >&2 " Could not find linker script."
  1033. @/bin/false
  1034. endif
  1035. archprepare: prepare1 scripts_basic
  1036. prepare0: archprepare FORCE
  1037. $(Q)$(MAKE) $(build)=.
  1038. # All the preparing..
  1039. prepare: prepare0
  1040. # Generate some files
  1041. # ---------------------------------------------------------------------------
  1042. define filechk_version.h
  1043. (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
  1044. echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
  1045. echo \#define CC_VERSION_STRING \"$$(LC_ALL=C $(CC) --version | head -n 1)\"; \
  1046. echo \#define LD_VERSION_STRING \"$$(LC_ALL=C $(LD) --version | head -n 1)\"; )
  1047. endef
  1048. # The SOURCE_DATE_EPOCH mechanism requires a date that behaves like GNU date.
  1049. # The BSD date on the other hand behaves different and would produce errors
  1050. # with the misused '-d' switch. Respect that and search a working date with
  1051. # well known pre- and suffixes for the GNU variant of date.
  1052. define filechk_timestamp.h
  1053. (if test -n "$${SOURCE_DATE_EPOCH}"; then \
  1054. SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \
  1055. DATE=""; \
  1056. for date in gdate date.gnu date; do \
  1057. $${date} -u -d "$${SOURCE_DATE}" >/dev/null 2>&1 && DATE="$${date}"; \
  1058. done; \
  1059. if test -n "$${DATE}"; then \
  1060. LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DATE "%b %d %C%y"'; \
  1061. LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TIME "%T"'; \
  1062. LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TZ "%z"'; \
  1063. LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
  1064. else \
  1065. return 42; \
  1066. fi; \
  1067. else \
  1068. LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
  1069. LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \
  1070. LC_ALL=C date +'#define U_BOOT_TZ "%z"'; \
  1071. LC_ALL=C date +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
  1072. fi)
  1073. endef
  1074. $(version_h): include/config/uboot.release FORCE
  1075. $(call filechk,version.h)
  1076. $(timestamp_h): $(srctree)/Makefile FORCE
  1077. $(call filechk,timestamp.h)
  1078. # ---------------------------------------------------------------------------
  1079. quiet_cmd_cpp_lds = LDS $@
  1080. cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) \
  1081. -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
  1082. u-boot.lds: $(LDSCRIPT) prepare FORCE
  1083. $(call if_changed_dep,cpp_lds)
  1084. spl/u-boot-spl.bin: spl/u-boot-spl
  1085. @:
  1086. spl/u-boot-spl: tools prepare \
  1087. $(if $(CONFIG_OF_SEPARATE)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb)
  1088. $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all
  1089. spl/sunxi-spl.bin: spl/u-boot-spl
  1090. @:
  1091. spl/u-boot-spl.sfp: spl/u-boot-spl
  1092. @:
  1093. spl/boot.bin: spl/u-boot-spl
  1094. @:
  1095. tpl/u-boot-tpl.bin: tools prepare
  1096. $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
  1097. TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
  1098. FIND := find
  1099. FINDFLAGS := -L
  1100. tags ctags:
  1101. ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
  1102. -name '*.[chS]' -print`
  1103. ln -s ctags tags
  1104. etags:
  1105. etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
  1106. -name '*.[chS]' -print`
  1107. cscope:
  1108. $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
  1109. cscope.files
  1110. cscope -b -q -k
  1111. SYSTEM_MAP = \
  1112. $(NM) $1 | \
  1113. grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
  1114. LC_ALL=C sort
  1115. System.map: u-boot
  1116. @$(call SYSTEM_MAP,$<) > $@
  1117. checkdtc:
  1118. @if test $(call dtc-version) -lt 0104; then \
  1119. echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
  1120. false; \
  1121. fi
  1122. #########################################################################
  1123. # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
  1124. # R_AARCH64_RELATIVE (64-bit).
  1125. checkarmreloc: u-boot
  1126. @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
  1127. grep R_A | sort -u`"; \
  1128. if test "$$RELOC" != "R_ARM_RELATIVE" -a \
  1129. "$$RELOC" != "R_AARCH64_RELATIVE"; then \
  1130. echo "$< contains unexpected relocations: $$RELOC"; \
  1131. false; \
  1132. fi
  1133. env: scripts_basic
  1134. $(Q)$(MAKE) $(build)=tools/$@
  1135. tools-only: scripts_basic $(version_h) $(timestamp_h)
  1136. $(Q)$(MAKE) $(build)=tools
  1137. tools-all: export HOST_TOOLS_ALL=y
  1138. tools-all: env tools ;
  1139. cross_tools: export CROSS_BUILD_TOOLS=y
  1140. cross_tools: tools ;
  1141. .PHONY : CHANGELOG
  1142. CHANGELOG:
  1143. git log --no-merges U-Boot-1_1_5.. | \
  1144. unexpand -a | sed -e 's/\s\s*$$//' > $@
  1145. #########################################################################
  1146. ###
  1147. # Cleaning is done on three levels.
  1148. # make clean Delete most generated files
  1149. # Leave enough to build external modules
  1150. # make mrproper Delete the current configuration, and all generated files
  1151. # make distclean Remove editor backup files, patch leftover files and the like
  1152. # Directories & files removed with 'make clean'
  1153. CLEAN_DIRS += $(MODVERDIR) \
  1154. $(foreach d, spl tpl, $(patsubst %,$d/%, \
  1155. $(filter-out include, $(shell ls -1 $d 2>/dev/null))))
  1156. CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h include/license.h \
  1157. boot* u-boot* MLO* SPL System.map
  1158. # Directories & files removed with 'make mrproper'
  1159. MRPROPER_DIRS += include/config include/generated spl tpl \
  1160. .tmp_objdiff
  1161. MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \
  1162. ctags etags tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
  1163. # clean - Delete most, but leave enough to build external modules
  1164. #
  1165. clean: rm-dirs := $(CLEAN_DIRS)
  1166. clean: rm-files := $(CLEAN_FILES)
  1167. clean-dirs := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
  1168. clean-dirs := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
  1169. PHONY += $(clean-dirs) clean archclean
  1170. $(clean-dirs):
  1171. $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
  1172. # TODO: Do not use *.cfgtmp
  1173. clean: $(clean-dirs)
  1174. $(call cmd,rmdirs)
  1175. $(call cmd,rmfiles)
  1176. @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
  1177. \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
  1178. -o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
  1179. -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
  1180. -o -name '*.symtypes' -o -name 'modules.order' \
  1181. -o -name modules.builtin -o -name '.tmp_*.o.*' \
  1182. -o -name 'dsdt.aml' -o -name 'dsdt.asl.tmp' -o -name 'dsdt.c' \
  1183. -o -name '*.gcno' \) -type f -print | xargs rm -f
  1184. # mrproper - Delete all generated files, including .config
  1185. #
  1186. mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
  1187. mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
  1188. mrproper-dirs := $(addprefix _mrproper_,scripts)
  1189. PHONY += $(mrproper-dirs) mrproper archmrproper
  1190. $(mrproper-dirs):
  1191. $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
  1192. mrproper: clean $(mrproper-dirs)
  1193. $(call cmd,rmdirs)
  1194. $(call cmd,rmfiles)
  1195. @rm -f arch/*/include/asm/arch
  1196. # distclean
  1197. #
  1198. PHONY += distclean
  1199. distclean: mrproper
  1200. @find $(srctree) $(RCS_FIND_IGNORE) \
  1201. \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
  1202. -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
  1203. -o -name '.*.rej' -o -name '*%' -o -name 'core' \
  1204. -o -name '*.pyc' \) \
  1205. -type f -print | xargs rm -f
  1206. @rm -f boards.cfg
  1207. backup:
  1208. F=`basename $(srctree)` ; cd .. ; \
  1209. gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
  1210. help:
  1211. @echo 'Cleaning targets:'
  1212. @echo ' clean - Remove most generated files but keep the config'
  1213. @echo ' mrproper - Remove all generated files + config + various backup files'
  1214. @echo ' distclean - mrproper + remove editor backup and patch files'
  1215. @echo ''
  1216. @echo 'Configuration targets:'
  1217. @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
  1218. @echo ''
  1219. @echo 'Other generic targets:'
  1220. @echo ' all - Build all necessary images depending on configuration'
  1221. @echo ' tests - Build U-Boot for sandbox and run tests'
  1222. @echo '* u-boot - Build the bare u-boot'
  1223. @echo ' dir/ - Build all files in dir and below'
  1224. @echo ' dir/file.[oisS] - Build specified target only'
  1225. @echo ' dir/file.lst - Build specified mixed source/assembly target only'
  1226. @echo ' (requires a recent binutils and recent build (System.map))'
  1227. @echo ' tags/ctags - Generate ctags file for editors'
  1228. @echo ' etags - Generate etags file for editors'
  1229. @echo ' cscope - Generate cscope index'
  1230. @echo ' ubootrelease - Output the release version string (use with make -s)'
  1231. @echo ' ubootversion - Output the version stored in Makefile (use with make -s)'
  1232. @echo " cfg - Don't build, just create the .cfg files"
  1233. @echo ''
  1234. @echo 'Static analysers'
  1235. @echo ' checkstack - Generate a list of stack hogs'
  1236. @echo ''
  1237. @echo 'Documentation targets:'
  1238. @$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
  1239. @echo ''
  1240. @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
  1241. @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
  1242. @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
  1243. @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
  1244. @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
  1245. @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
  1246. @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
  1247. @echo ' 1: warnings which may be relevant and do not occur too often'
  1248. @echo ' 2: warnings which occur quite often but may still be relevant'
  1249. @echo ' 3: more obscure warnings, can most likely be ignored'
  1250. @echo ' Multiple levels can be combined with W=12 or W=123'
  1251. @echo ''
  1252. @echo 'Execute "make" or "make all" to build all targets marked with [*] '
  1253. @echo 'For further info see the ./README file'
  1254. tests:
  1255. $(srctree)/test/run
  1256. # Documentation targets
  1257. # ---------------------------------------------------------------------------
  1258. %docs: scripts_basic FORCE
  1259. $(Q)$(MAKE) $(build)=scripts build_docproc
  1260. $(Q)$(MAKE) $(build)=doc/DocBook $@
  1261. # Dummies...
  1262. PHONY += prepare scripts
  1263. prepare: ;
  1264. scripts: ;
  1265. endif #ifeq ($(config-targets),1)
  1266. endif #ifeq ($(mixed-targets),1)
  1267. PHONY += checkstack ubootrelease ubootversion
  1268. checkstack:
  1269. $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
  1270. $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
  1271. ubootrelease:
  1272. @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
  1273. ubootversion:
  1274. @echo $(UBOOTVERSION)
  1275. # Single targets
  1276. # ---------------------------------------------------------------------------
  1277. # Single targets are compatible with:
  1278. # - build with mixed source and output
  1279. # - build with separate output dir 'make O=...'
  1280. # - external modules
  1281. #
  1282. # target-dir => where to store outputfile
  1283. # build-dir => directory in kernel source tree to use
  1284. ifeq ($(KBUILD_EXTMOD),)
  1285. build-dir = $(patsubst %/,%,$(dir $@))
  1286. target-dir = $(dir $@)
  1287. else
  1288. zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
  1289. build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
  1290. target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
  1291. endif
  1292. %.s: %.c prepare scripts FORCE
  1293. $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  1294. %.i: %.c prepare scripts FORCE
  1295. $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  1296. %.o: %.c prepare scripts FORCE
  1297. $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  1298. %.lst: %.c prepare scripts FORCE
  1299. $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  1300. %.s: %.S prepare scripts FORCE
  1301. $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  1302. %.o: %.S prepare scripts FORCE
  1303. $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  1304. %.symtypes: %.c prepare scripts FORCE
  1305. $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  1306. # Modules
  1307. /: prepare scripts FORCE
  1308. $(cmd_crmodverdir)
  1309. $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
  1310. $(build)=$(build-dir)
  1311. %/: prepare scripts FORCE
  1312. $(cmd_crmodverdir)
  1313. $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
  1314. $(build)=$(build-dir)
  1315. %.ko: prepare scripts FORCE
  1316. $(cmd_crmodverdir)
  1317. $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
  1318. $(build)=$(build-dir) $(@:.ko=.o)
  1319. $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
  1320. # FIXME Should go into a make.lib or something
  1321. # ===========================================================================
  1322. quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
  1323. cmd_rmdirs = rm -rf $(rm-dirs)
  1324. quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
  1325. cmd_rmfiles = rm -f $(rm-files)
  1326. # read all saved command lines
  1327. targets := $(wildcard $(sort $(targets)))
  1328. cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
  1329. ifneq ($(cmd_files),)
  1330. $(cmd_files): ; # Do not try to update included dependency files
  1331. include $(cmd_files)
  1332. endif
  1333. endif # skip-makefile
  1334. PHONY += FORCE
  1335. FORCE:
  1336. # Declare the contents of the .PHONY variable as phony. We keep that
  1337. # information in a variable so we can use it in if_changed and friends.
  1338. .PHONY: $(PHONY)