xref: /openbmc/u-boot/Makefile (revision 4bb656e9)
1#
2# SPDX-License-Identifier:	GPL-2.0+
3#
4
5VERSION = 2016
6PATCHLEVEL = 03
7SUBLEVEL =
8EXTRAVERSION =
9NAME =
10
11# *DOCUMENTATION*
12# To see a list of typical targets execute "make help"
13# More info can be located in ./README
14# Comments in this file are targeted only to the developer, do not
15# expect to learn how to build the kernel reading this file.
16
17# o Do not use make's built-in rules and variables
18#   (this increases performance and avoids hard-to-debug behaviour);
19# o Look for make include files relative to root of kernel src
20MAKEFLAGS += -rR --include-dir=$(CURDIR)
21
22# Avoid funny character set dependencies
23unexport LC_ALL
24LC_COLLATE=C
25LC_NUMERIC=C
26export LC_COLLATE LC_NUMERIC
27
28# Avoid interference with shell env settings
29unexport GREP_OPTIONS
30
31# We are using a recursive build, so we need to do a little thinking
32# to get the ordering right.
33#
34# Most importantly: sub-Makefiles should only ever modify files in
35# their own directory. If in some directory we have a dependency on
36# a file in another dir (which doesn't happen often, but it's often
37# unavoidable when linking the built-in.o targets which finally
38# turn into vmlinux), we will call a sub make in that other dir, and
39# after that we are sure that everything which is in that other dir
40# is now up to date.
41#
42# The only cases where we need to modify files which have global
43# effects are thus separated out and done before the recursive
44# descending is started. They are now explicitly listed as the
45# prepare rule.
46
47# Beautify output
48# ---------------------------------------------------------------------------
49#
50# Normally, we echo the whole command before executing it. By making
51# that echo $($(quiet)$(cmd)), we now have the possibility to set
52# $(quiet) to choose other forms of output instead, e.g.
53#
54#         quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
55#         cmd_cc_o_c       = $(CC) $(c_flags) -c -o $@ $<
56#
57# If $(quiet) is empty, the whole command will be printed.
58# If it is set to "quiet_", only the short version will be printed.
59# If it is set to "silent_", nothing will be printed at all, since
60# the variable $(silent_cmd_cc_o_c) doesn't exist.
61#
62# A simple variant is to prefix commands with $(Q) - that's useful
63# for commands that shall be hidden in non-verbose mode.
64#
65#	$(Q)ln $@ :<
66#
67# If KBUILD_VERBOSE equals 0 then the above command will be hidden.
68# If KBUILD_VERBOSE equals 1 then the above command is displayed.
69#
70# To put more focus on warnings, be less verbose as default
71# Use 'make V=1' to see the full commands
72
73ifeq ("$(origin V)", "command line")
74  KBUILD_VERBOSE = $(V)
75endif
76ifndef KBUILD_VERBOSE
77  KBUILD_VERBOSE = 0
78endif
79
80ifeq ($(KBUILD_VERBOSE),1)
81  quiet =
82  Q =
83else
84  quiet=quiet_
85  Q = @
86endif
87
88# If the user is running make -s (silent mode), suppress echoing of
89# commands
90
91ifneq ($(filter 4.%,$(MAKE_VERSION)),)	# make-4
92ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
93  quiet=silent_
94endif
95else					# make-3.8x
96ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
97  quiet=silent_
98endif
99endif
100
101export quiet Q KBUILD_VERBOSE
102
103# kbuild supports saving output files in a separate directory.
104# To locate output files in a separate directory two syntaxes are supported.
105# In both cases the working directory must be the root of the kernel src.
106# 1) O=
107# Use "make O=dir/to/store/output/files/"
108#
109# 2) Set KBUILD_OUTPUT
110# Set the environment variable KBUILD_OUTPUT to point to the directory
111# where the output files shall be placed.
112# export KBUILD_OUTPUT=dir/to/store/output/files/
113# make
114#
115# The O= assignment takes precedence over the KBUILD_OUTPUT environment
116# variable.
117
118# KBUILD_SRC is set on invocation of make in OBJ directory
119# KBUILD_SRC is not intended to be used by the regular user (for now)
120ifeq ($(KBUILD_SRC),)
121
122# OK, Make called in directory where kernel src resides
123# Do we want to locate output files in a separate directory?
124ifeq ("$(origin O)", "command line")
125  KBUILD_OUTPUT := $(O)
126endif
127
128# That's our default target when none is given on the command line
129PHONY := _all
130_all:
131
132# Cancel implicit rules on top Makefile
133$(CURDIR)/Makefile Makefile: ;
134
135ifneq ($(KBUILD_OUTPUT),)
136# Invoke a second make in the output directory, passing relevant variables
137# check that the output directory actually exists
138saved-output := $(KBUILD_OUTPUT)
139KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
140								&& /bin/pwd)
141$(if $(KBUILD_OUTPUT),, \
142     $(error failed to create output directory "$(saved-output)"))
143
144PHONY += $(MAKECMDGOALS) sub-make
145
146$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
147	@:
148
149sub-make: FORCE
150	$(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
151	-f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS))
152
153# Leave processing to above invocation of make
154skip-makefile := 1
155endif # ifneq ($(KBUILD_OUTPUT),)
156endif # ifeq ($(KBUILD_SRC),)
157
158# We process the rest of the Makefile if this is the final invocation of make
159ifeq ($(skip-makefile),)
160
161# Do not print "Entering directory ...",
162# but we want to display it when entering to the output directory
163# so that IDEs/editors are able to understand relative filenames.
164MAKEFLAGS += --no-print-directory
165
166# Call a source code checker (by default, "sparse") as part of the
167# C compilation.
168#
169# Use 'make C=1' to enable checking of only re-compiled files.
170# Use 'make C=2' to enable checking of *all* source files, regardless
171# of whether they are re-compiled or not.
172#
173# See the file "Documentation/sparse.txt" for more details, including
174# where to get the "sparse" utility.
175
176ifeq ("$(origin C)", "command line")
177  KBUILD_CHECKSRC = $(C)
178endif
179ifndef KBUILD_CHECKSRC
180  KBUILD_CHECKSRC = 0
181endif
182
183# Use make M=dir to specify directory of external module to build
184# Old syntax make ... SUBDIRS=$PWD is still supported
185# Setting the environment variable KBUILD_EXTMOD take precedence
186ifdef SUBDIRS
187  KBUILD_EXTMOD ?= $(SUBDIRS)
188endif
189
190ifeq ("$(origin M)", "command line")
191  KBUILD_EXTMOD := $(M)
192endif
193
194# If building an external module we do not care about the all: rule
195# but instead _all depend on modules
196PHONY += all
197ifeq ($(KBUILD_EXTMOD),)
198_all: all
199else
200_all: modules
201endif
202
203ifeq ($(KBUILD_SRC),)
204        # building in the source tree
205        srctree := .
206else
207        ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
208                # building in a subdirectory of the source tree
209                srctree := ..
210        else
211                srctree := $(KBUILD_SRC)
212        endif
213endif
214objtree		:= .
215src		:= $(srctree)
216obj		:= $(objtree)
217
218VPATH		:= $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
219
220export srctree objtree VPATH
221
222# Make sure CDPATH settings don't interfere
223unexport CDPATH
224
225#########################################################################
226
227HOSTARCH := $(shell uname -m | \
228	sed -e s/i.86/x86/ \
229	    -e s/sun4u/sparc64/ \
230	    -e s/arm.*/arm/ \
231	    -e s/sa110/arm/ \
232	    -e s/ppc64/powerpc/ \
233	    -e s/ppc/powerpc/ \
234	    -e s/macppc/powerpc/\
235	    -e s/sh.*/sh/)
236
237HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
238	    sed -e 's/\(cygwin\).*/cygwin/')
239
240export	HOSTARCH HOSTOS
241
242#########################################################################
243
244# set default to nothing for native builds
245ifeq ($(HOSTARCH),$(ARCH))
246CROSS_COMPILE ?=
247endif
248
249KCONFIG_CONFIG	?= .config
250export KCONFIG_CONFIG
251
252# SHELL used by kbuild
253CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
254	  else if [ -x /bin/bash ]; then echo /bin/bash; \
255	  else echo sh; fi ; fi)
256
257HOSTCC       = cc
258HOSTCXX      = c++
259HOSTCFLAGS   = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
260HOSTCXXFLAGS = -O2
261
262ifeq ($(HOSTOS),cygwin)
263HOSTCFLAGS	+= -ansi
264endif
265
266# Mac OS X / Darwin's C preprocessor is Apple specific.  It
267# generates numerous errors and warnings.  We want to bypass it
268# and use GNU C's cpp.	To do this we pass the -traditional-cpp
269# option to the compiler.  Note that the -traditional-cpp flag
270# DOES NOT have the same semantics as GNU C's flag, all it does
271# is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
272#
273# Apple's linker is similar, thanks to the new 2 stage linking
274# multiple symbol definitions are treated as errors, hence the
275# -multiply_defined suppress option to turn off this error.
276#
277ifeq ($(HOSTOS),darwin)
278# get major and minor product version (e.g. '10' and '6' for Snow Leopard)
279DARWIN_MAJOR_VERSION	= $(shell sw_vers -productVersion | cut -f 1 -d '.')
280DARWIN_MINOR_VERSION	= $(shell sw_vers -productVersion | cut -f 2 -d '.')
281
282os_x_before	= $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
283	$(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
284
285# Snow Leopards build environment has no longer restrictions as described above
286HOSTCC       = $(call os_x_before, 10, 5, "cc", "gcc")
287HOSTCFLAGS  += $(call os_x_before, 10, 4, "-traditional-cpp")
288HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
289
290# since Lion (10.7) ASLR is on by default, but we use linker generated lists
291# in some host tools which is a problem then ... so disable ASLR for these
292# tools
293HOSTLDFLAGS += $(call os_x_before, 10, 7, "", "-Xlinker -no_pie")
294endif
295
296# Decide whether to build built-in, modular, or both.
297# Normally, just do built-in.
298
299KBUILD_MODULES :=
300KBUILD_BUILTIN := 1
301
302# If we have only "make modules", don't compile built-in objects.
303# When we're building modules with modversions, we need to consider
304# the built-in objects during the descend as well, in order to
305# make sure the checksums are up to date before we record them.
306
307ifeq ($(MAKECMDGOALS),modules)
308  KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
309endif
310
311# If we have "make <whatever> modules", compile modules
312# in addition to whatever we do anyway.
313# Just "make" or "make all" shall build modules as well
314
315# U-Boot does not need modules
316#ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
317#  KBUILD_MODULES := 1
318#endif
319
320#ifeq ($(MAKECMDGOALS),)
321#  KBUILD_MODULES := 1
322#endif
323
324export KBUILD_MODULES KBUILD_BUILTIN
325export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
326
327# We need some generic definitions (do not try to remake the file).
328scripts/Kbuild.include: ;
329include scripts/Kbuild.include
330
331# Make variables (CC, etc...)
332
333AS		= $(CROSS_COMPILE)as
334# Always use GNU ld
335ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
336LD		= $(CROSS_COMPILE)ld.bfd
337else
338LD		= $(CROSS_COMPILE)ld
339endif
340CC		= $(CROSS_COMPILE)gcc
341CPP		= $(CC) -E
342AR		= $(CROSS_COMPILE)ar
343NM		= $(CROSS_COMPILE)nm
344LDR		= $(CROSS_COMPILE)ldr
345STRIP		= $(CROSS_COMPILE)strip
346OBJCOPY		= $(CROSS_COMPILE)objcopy
347OBJDUMP		= $(CROSS_COMPILE)objdump
348AWK		= awk
349PERL		= perl
350PYTHON		= python
351DTC		= dtc
352CHECK		= sparse
353
354CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
355		  -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
356
357KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__
358
359KBUILD_CFLAGS   := -Wall -Wstrict-prototypes \
360		   -Wno-format-security \
361		   -fno-builtin -ffreestanding
362KBUILD_AFLAGS   := -D__ASSEMBLY__
363
364# Read UBOOTRELEASE from include/config/uboot.release (if it exists)
365UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
366UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
367
368export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
369export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
370export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
371export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
372export MAKE AWK PERL PYTHON
373export HOSTCXX HOSTCXXFLAGS DTC CHECK CHECKFLAGS
374
375export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
376export KBUILD_CFLAGS KBUILD_AFLAGS
377
378# When compiling out-of-tree modules, put MODVERDIR in the module
379# tree rather than in the kernel tree. The kernel tree might
380# even be read-only.
381export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
382
383# Files to ignore in find ... statements
384
385export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o    \
386			  -name CVS -o -name .pc -o -name .hg -o -name .git \) \
387			  -prune -o
388export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
389			 --exclude CVS --exclude .pc --exclude .hg --exclude .git
390
391# ===========================================================================
392# Rules shared between *config targets and build targets
393
394# Basic helpers built in scripts/
395PHONY += scripts_basic
396scripts_basic:
397	$(Q)$(MAKE) $(build)=scripts/basic
398	$(Q)rm -f .tmp_quiet_recordmcount
399
400# To avoid any implicit rule to kick in, define an empty command.
401scripts/basic/%: scripts_basic ;
402
403PHONY += outputmakefile
404# outputmakefile generates a Makefile in the output directory, if using a
405# separate output directory. This allows convenient use of make in the
406# output directory.
407outputmakefile:
408ifneq ($(KBUILD_SRC),)
409	$(Q)ln -fsn $(srctree) source
410	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
411	    $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
412endif
413
414# To make sure we do not include .config for any of the *config targets
415# catch them early, and hand them over to scripts/kconfig/Makefile
416# It is allowed to specify more targets when calling make, including
417# mixing *config targets and build targets.
418# For example 'make oldconfig all'.
419# Detect when mixed targets is specified, and make a second invocation
420# of make so .config is not included in this case either (for *config).
421
422version_h := include/generated/version_autogenerated.h
423timestamp_h := include/generated/timestamp_autogenerated.h
424
425no-dot-config-targets := clean clobber mrproper distclean \
426			 help %docs check% coccicheck \
427			 ubootversion backup
428
429config-targets := 0
430mixed-targets  := 0
431dot-config     := 1
432
433ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
434	ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
435		dot-config := 0
436	endif
437endif
438
439ifeq ($(KBUILD_EXTMOD),)
440        ifneq ($(filter config %config,$(MAKECMDGOALS)),)
441                config-targets := 1
442                ifneq ($(words $(MAKECMDGOALS)),1)
443                        mixed-targets := 1
444                endif
445        endif
446endif
447
448ifeq ($(mixed-targets),1)
449# ===========================================================================
450# We're called with mixed targets (*config and build targets).
451# Handle them one by one.
452
453PHONY += $(MAKECMDGOALS) __build_one_by_one
454
455$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
456	@:
457
458__build_one_by_one:
459	$(Q)set -e; \
460	for i in $(MAKECMDGOALS); do \
461		$(MAKE) -f $(srctree)/Makefile $$i; \
462	done
463
464else
465ifeq ($(config-targets),1)
466# ===========================================================================
467# *config targets only - make sure prerequisites are updated, and descend
468# in scripts/kconfig to make the *config target
469
470KBUILD_DEFCONFIG := sandbox_defconfig
471export KBUILD_DEFCONFIG KBUILD_KCONFIG
472
473config: scripts_basic outputmakefile FORCE
474	$(Q)$(MAKE) $(build)=scripts/kconfig $@
475
476%config: scripts_basic outputmakefile FORCE
477	$(Q)$(MAKE) $(build)=scripts/kconfig $@
478
479else
480# ===========================================================================
481# Build targets only - this includes vmlinux, arch specific targets, clean
482# targets and others. In general all targets except *config targets.
483
484ifeq ($(dot-config),1)
485# Read in config
486-include include/config/auto.conf
487
488# Read in dependencies to all Kconfig* files, make sure to run
489# oldconfig if changes are detected.
490-include include/config/auto.conf.cmd
491
492# To avoid any implicit rule to kick in, define an empty command
493$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
494
495# If .config is newer than include/config/auto.conf, someone tinkered
496# with it and forgot to run make oldconfig.
497# if auto.conf.cmd is missing then we are probably in a cleaned tree so
498# we execute the config step to be sure to catch updated Kconfig files
499include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
500	$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
501	@# If the following part fails, include/config/auto.conf should be
502	@# deleted so "make silentoldconfig" will be re-run on the next build.
503	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf || \
504		{ rm -f include/config/auto.conf; false; }
505	@# include/config.h has been updated after "make silentoldconfig".
506	@# We need to touch include/config/auto.conf so it gets newer
507	@# than include/config.h.
508	@# Otherwise, 'make silentoldconfig' would be invoked twice.
509	$(Q)touch include/config/auto.conf
510
511-include include/autoconf.mk
512-include include/autoconf.mk.dep
513
514# We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf
515# is up-to-date. When we switch to a different board configuration, old CONFIG
516# macros are still remaining in include/config/auto.conf. Without the following
517# gimmick, wrong config.mk would be included leading nasty warnings/errors.
518ifneq ($(wildcard $(KCONFIG_CONFIG)),)
519ifneq ($(wildcard include/config/auto.conf),)
520autoconf_is_old := $(shell find . -path ./$(KCONFIG_CONFIG) -newer \
521						include/config/auto.conf)
522ifeq ($(autoconf_is_old),)
523include config.mk
524include arch/$(ARCH)/Makefile
525endif
526endif
527endif
528
529# If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
530# that (or fail if absent).  Otherwise, search for a linker script in a
531# standard location.
532
533ifndef LDSCRIPT
534	#LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
535	ifdef CONFIG_SYS_LDSCRIPT
536		# need to strip off double quotes
537		LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
538	endif
539endif
540
541# If there is no specified link script, we look in a number of places for it
542ifndef LDSCRIPT
543	ifeq ($(wildcard $(LDSCRIPT)),)
544		LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
545	endif
546	ifeq ($(wildcard $(LDSCRIPT)),)
547		LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
548	endif
549	ifeq ($(wildcard $(LDSCRIPT)),)
550		LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
551	endif
552endif
553
554else
555# Dummy target needed, because used as prerequisite
556include/config/auto.conf: ;
557endif # $(dot-config)
558
559ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
560KBUILD_CFLAGS	+= -Os
561else
562KBUILD_CFLAGS	+= -O2
563endif
564
565KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
566KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks)
567
568KBUILD_CFLAGS	+= -g
569# $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
570# option to the assembler.
571KBUILD_AFLAGS	+= -g
572
573# Report stack usage if supported
574ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
575	KBUILD_CFLAGS += -fstack-usage
576endif
577
578KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
579
580# turn jbsr into jsr for m68k
581ifeq ($(ARCH),m68k)
582ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
583KBUILD_AFLAGS += -Wa,-gstabs,-S
584endif
585endif
586
587# Prohibit date/time macros, which would make the build non-deterministic
588KBUILD_CFLAGS   += $(call cc-option,-Werror=date-time)
589
590include scripts/Makefile.extrawarn
591
592# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
593KBUILD_CPPFLAGS += $(KCPPFLAGS)
594KBUILD_AFLAGS += $(KAFLAGS)
595KBUILD_CFLAGS += $(KCFLAGS)
596
597# Use UBOOTINCLUDE when you must reference the include/ directory.
598# Needed to be compatible with the O= option
599UBOOTINCLUDE    := \
600		-Iinclude \
601		$(if $(KBUILD_SRC), -I$(srctree)/include) \
602		$(if $(CONFIG_SYS_THUMB_BUILD), $(if $(CONFIG_HAS_THUMB2),, \
603			-I$(srctree)/arch/$(ARCH)/thumb1/include),) \
604		-I$(srctree)/arch/$(ARCH)/include \
605		-include $(srctree)/include/linux/kconfig.h
606
607NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
608CHECKFLAGS     += $(NOSTDINC_FLAGS)
609
610# FIX ME
611cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
612							$(NOSTDINC_FLAGS)
613c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
614
615#########################################################################
616# U-Boot objects....order is important (i.e. start must be first)
617
618HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
619
620libs-y += lib/
621libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
622libs-$(CONFIG_OF_EMBED) += dts/
623libs-y += fs/
624libs-y += net/
625libs-y += disk/
626libs-y += drivers/
627libs-y += drivers/dma/
628libs-y += drivers/gpio/
629libs-y += drivers/i2c/
630libs-y += drivers/mmc/
631libs-y += drivers/mtd/
632libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
633libs-y += drivers/mtd/onenand/
634libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
635libs-y += drivers/mtd/spi/
636libs-y += drivers/net/
637libs-y += drivers/net/phy/
638libs-y += drivers/pci/
639libs-y += drivers/power/ \
640	drivers/power/fuel_gauge/ \
641	drivers/power/mfd/ \
642	drivers/power/pmic/ \
643	drivers/power/battery/ \
644	drivers/power/regulator/
645libs-y += drivers/spi/
646libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
647libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
648libs-$(CONFIG_ALTERA_SDRAM) += drivers/ddr/altera/
649libs-y += drivers/serial/
650libs-y += drivers/usb/dwc3/
651libs-y += drivers/usb/emul/
652libs-y += drivers/usb/eth/
653libs-y += drivers/usb/gadget/
654libs-y += drivers/usb/gadget/udc/
655libs-y += drivers/usb/host/
656libs-y += drivers/usb/musb/
657libs-y += drivers/usb/musb-new/
658libs-y += drivers/usb/phy/
659libs-y += drivers/usb/ulpi/
660libs-y += cmd/
661libs-y += common/
662libs-$(CONFIG_API) += api/
663libs-$(CONFIG_HAS_POST) += post/
664libs-y += test/
665libs-y += test/dm/
666libs-$(CONFIG_UT_ENV) += test/env/
667
668libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
669
670libs-y := $(sort $(libs-y))
671
672u-boot-dirs	:= $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
673
674u-boot-alldirs	:= $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
675
676libs-y		:= $(patsubst %/, %/built-in.o, $(libs-y))
677
678u-boot-init := $(head-y)
679u-boot-main := $(libs-y)
680
681
682# Add GCC lib
683ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
684PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
685else
686PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
687endif
688PLATFORM_LIBS += $(PLATFORM_LIBGCC)
689export PLATFORM_LIBS
690export PLATFORM_LIBGCC
691
692# Special flags for CPP when processing the linker script.
693# Pass the version down so we can handle backwards compatibility
694# on the fly.
695LDPPFLAGS += \
696	-include $(srctree)/include/u-boot/u-boot.lds.h \
697	-DCPUDIR=$(CPUDIR) \
698	$(shell $(LD) --version | \
699	  sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
700
701#########################################################################
702#########################################################################
703
704ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
705BOARD_SIZE_CHECK = \
706	@actual=`wc -c $@ | awk '{print $$1}'`; \
707	limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
708	if test $$actual -gt $$limit; then \
709		echo "$@ exceeds file size limit:" >&2 ; \
710		echo "  limit:  $$limit bytes" >&2 ; \
711		echo "  actual: $$actual bytes" >&2 ; \
712		echo "  excess: $$((actual - limit)) bytes" >&2; \
713		exit 1; \
714	fi
715else
716BOARD_SIZE_CHECK =
717endif
718
719# Statically apply RELA-style relocations (currently arm64 only)
720ifneq ($(CONFIG_STATIC_RELA),)
721# $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
722DO_STATIC_RELA = \
723	start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
724	end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
725	tools/relocate-rela $(2) $(3) $$start $$end
726else
727DO_STATIC_RELA =
728endif
729
730# Always append ALL so that arch config.mk's can add custom ones
731ALL-y += u-boot.srec u-boot.bin u-boot.sym System.map u-boot.cfg binary_size_check
732
733ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
734ifeq ($(CONFIG_SPL_FSL_PBL),y)
735ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
736else
737ifneq ($(CONFIG_SECURE_BOOT), y)
738# For Secure Boot The Image needs to be signed and Header must also
739# be included. So The image has to be built explicitly
740ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
741endif
742endif
743ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
744ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
745ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
746ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb
747ifeq ($(CONFIG_SPL_FRAMEWORK),y)
748ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
749endif
750ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
751ifneq ($(CONFIG_SPL_TARGET),)
752ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
753endif
754ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
755ALL-$(CONFIG_EFI_APP) += u-boot-app.efi
756ALL-$(CONFIG_EFI_STUB) += u-boot-payload.efi
757
758ifneq ($(BUILD_ROM),)
759ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
760endif
761
762# enable combined SPL/u-boot/dtb rules for tegra
763ifeq ($(CONFIG_TEGRA)$(CONFIG_SPL),yy)
764ALL-y += u-boot-tegra.bin u-boot-nodtb-tegra.bin
765ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb-tegra.bin
766endif
767
768# Add optional build target if defined in board/cpu/soc headers
769ifneq ($(CONFIG_BUILD_TARGET),)
770ALL-y += $(CONFIG_BUILD_TARGET:"%"=%)
771endif
772
773LDFLAGS_u-boot += $(LDFLAGS_FINAL)
774ifneq ($(CONFIG_SYS_TEXT_BASE),)
775LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
776endif
777
778# Normally we fill empty space with 0xff
779quiet_cmd_objcopy = OBJCOPY $@
780cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \
781	$(OBJCOPYFLAGS_$(@F)) $< $@
782
783# Provide a version which does not do this, for use by EFI
784quiet_cmd_zobjcopy = OBJCOPY $@
785cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
786
787quiet_cmd_efipayload = OBJCOPY $@
788cmd_efipayload = $(OBJCOPY) -I binary -O $(EFIPAYLOAD_BFDTARGET) -B $(EFIPAYLOAD_BFDARCH) $< $@
789
790quiet_cmd_mkimage = MKIMAGE $@
791cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
792	$(if $(KBUILD_VERBOSE:1=), >/dev/null)
793
794quiet_cmd_cat = CAT     $@
795cmd_cat = cat $(filter-out $(PHONY), $^) > $@
796
797append = cat $(filter-out $< $(PHONY), $^) >> $@
798
799quiet_cmd_pad_cat = CAT     $@
800cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
801
802all:		$(ALL-y)
803ifneq ($(CONFIG_SYS_GENERIC_BOARD),y)
804	@echo "===================== WARNING ======================"
805	@echo "Please convert this board to generic board."
806	@echo "Otherwise it will be removed by the end of 2014."
807	@echo "See doc/README.generic-board for further information"
808	@echo "===================================================="
809endif
810ifeq ($(CONFIG_DM_I2C_COMPAT),y)
811	@echo "===================== WARNING ======================"
812	@echo "This board uses CONFIG_DM_I2C_COMPAT. Please remove"
813	@echo "(possibly in a subsequent patch in your series)"
814	@echo "before sending patches to the mailing list."
815	@echo "===================================================="
816endif
817
818PHONY += dtbs
819dtbs dts/dt.dtb: checkdtc u-boot
820	$(Q)$(MAKE) $(build)=dts dtbs
821
822quiet_cmd_copy = COPY    $@
823      cmd_copy = cp $< $@
824
825ifeq ($(CONFIG_OF_SEPARATE),y)
826u-boot-dtb.bin: u-boot-nodtb.bin dts/dt.dtb FORCE
827	$(call if_changed,cat)
828
829u-boot.bin: u-boot-dtb.bin FORCE
830	$(call if_changed,copy)
831else
832u-boot.bin: u-boot-nodtb.bin FORCE
833	$(call if_changed,copy)
834endif
835
836%.imx: %.bin
837	$(Q)$(MAKE) $(build)=arch/arm/imx-common $@
838
839u-boot.dtb: dts/dt.dtb
840	$(call cmd,copy)
841
842OBJCOPYFLAGS_u-boot.hex := -O ihex
843
844OBJCOPYFLAGS_u-boot.srec := -O srec
845
846u-boot.hex u-boot.srec: u-boot FORCE
847	$(call if_changed,objcopy)
848
849OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \
850		$(if $(CONFIG_X86_RESET_VECTOR),-R .start16 -R .resetvec)
851
852binary_size_check: u-boot-nodtb.bin FORCE
853	@file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \
854	map_size=$(shell cat u-boot.map | \
855		awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
856		| sed 's/0X//g' \
857		| bc); \
858	if [ "" != "$$map_size" ]; then \
859		if test $$map_size -ne $$file_size; then \
860			echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
861			echo "  but u-boot-nodtb.bin shows $$file_size" >&2 ; \
862			exit 1; \
863		fi \
864	fi
865
866u-boot-nodtb.bin: u-boot FORCE
867	$(call if_changed,objcopy)
868	$(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
869	$(BOARD_SIZE_CHECK)
870
871u-boot.ldr:	u-boot
872		$(CREATE_LDR_ENV)
873		$(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS)
874		$(BOARD_SIZE_CHECK)
875
876OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
877
878OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
879
880u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
881	$(call if_changed,objcopy)
882
883#
884# U-Boot entry point, needed for booting of full-blown U-Boot
885# from the SPL U-Boot version.
886#
887ifndef CONFIG_SYS_UBOOT_START
888CONFIG_SYS_UBOOT_START := 0
889endif
890
891# Create a file containing the configuration options the image was built with
892quiet_cmd_cpp_cfg = CFG     $@
893cmd_cpp_cfg = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
894	-DDO_DEPS_ONLY -D__ASSEMBLY__ -x assembler-with-cpp -P -dM -E -o $@ $<
895
896ifdef CONFIG_SPL_LOAD_FIT
897MKIMAGEFLAGS_u-boot.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
898	-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
899	-n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \
900	-b $(patsubst %,arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST)))
901else
902MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
903	-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
904	-n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
905endif
906
907MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
908
909MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
910	-T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
911
912MKIMAGEFLAGS_u-boot-spl.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
913	-T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
914
915MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
916		-R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
917
918u-boot-dtb.img u-boot.img u-boot.kwb u-boot.pbl: \
919		$(if $(CONFIG_SPL_LOAD_FIT),u-boot-nodtb.bin dts/dt.dtb,u-boot.bin) FORCE
920	$(call if_changed,mkimage)
921
922u-boot-spl.kwb: u-boot.img spl/u-boot-spl.bin FORCE
923	$(call if_changed,mkimage)
924
925u-boot.sha1:	u-boot.bin
926		tools/ubsha1 u-boot.bin
927
928u-boot.dis:	u-boot
929		$(OBJDUMP) -d $< > $@
930
931u-boot.cfg:	include/config.h FORCE
932	$(call if_changed,cpp_cfg)
933
934ifdef CONFIG_TPL
935SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
936else
937SPL_PAYLOAD := u-boot.bin
938endif
939
940OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
941				   --pad-to=$(CONFIG_SPL_PAD_TO)
942u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
943	$(call if_changed,pad_cat)
944
945MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE)
946
947lpc32xx-spl.img: spl/u-boot-spl.bin FORCE
948	$(call if_changed,mkimage)
949
950OBJCOPYFLAGS_lpc32xx-boot-0.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
951
952lpc32xx-boot-0.bin: lpc32xx-spl.img FORCE
953	$(call if_changed,objcopy)
954
955OBJCOPYFLAGS_lpc32xx-boot-1.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
956
957lpc32xx-boot-1.bin: lpc32xx-spl.img FORCE
958	$(call if_changed,objcopy)
959
960lpc32xx-full.bin: lpc32xx-boot-0.bin lpc32xx-boot-1.bin u-boot.img FORCE
961	$(call if_changed,cat)
962
963CLEAN_FILES += lpc32xx-*
964
965OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
966				   --pad-to=$(CONFIG_TPL_PAD_TO)
967tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
968	$(call if_changed,pad_cat)
969
970SPL: spl/u-boot-spl.bin FORCE
971	$(Q)$(MAKE) $(build)=arch/arm/imx-common $@
972
973u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
974	$(Q)$(MAKE) $(build)=arch/arm/imx-common $@
975
976MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
977
978u-boot.ubl: u-boot-with-spl.bin FORCE
979	$(call if_changed,mkimage)
980
981MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
982	$(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
983	-T aisimage -e $(CONFIG_SPL_TEXT_BASE)
984spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
985	$(call if_changed,mkimage)
986
987OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
988u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
989	$(call if_changed,pad_cat)
990
991u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
992	$(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
993u-boot.sb: u-boot.bin spl/u-boot-spl.bin
994	$(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
995
996# On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
997# Both images are created using mkimage (crc etc), so that the ROM
998# bootloader can check its integrity. Padding needs to be done to the
999# SPL image (with mkimage header) and not the binary. Otherwise the resulting image
1000# which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
1001# The resulting image containing both U-Boot images is called u-boot.spr
1002MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
1003	-a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
1004spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
1005	$(call if_changed,mkimage)
1006
1007OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1008			  --gap-fill=0xff
1009u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
1010	$(call if_changed,pad_cat)
1011
1012ifneq ($(CONFIG_ARCH_SOCFPGA),)
1013quiet_cmd_socboot = SOCBOOT $@
1014cmd_socboot = cat	spl/u-boot-spl.sfp spl/u-boot-spl.sfp	\
1015			spl/u-boot-spl.sfp spl/u-boot-spl.sfp	\
1016			u-boot.img > $@ || rm -f $@
1017u-boot-with-spl.sfp: spl/u-boot-spl.sfp u-boot.img FORCE
1018	$(call if_changed,socboot)
1019endif
1020
1021# x86 uses a large ROM. We fill it with 0xff, put the 16-bit stuff (including
1022# reset vector) at the top, Intel ME descriptor at the bottom, and U-Boot in
1023# the middle.
1024ifneq ($(CONFIG_X86_RESET_VECTOR),)
1025rom: u-boot.rom FORCE
1026
1027IFDTOOL=$(objtree)/tools/ifdtool
1028IFDTOOL_FLAGS  = -f 0:$(objtree)/u-boot.dtb
1029IFDTOOL_FLAGS += -m 0x$(shell $(NM) u-boot |grep _dt_ucode_base_size |cut -d' ' -f1)
1030IFDTOOL_FLAGS += -U $(CONFIG_SYS_TEXT_BASE):$(objtree)/u-boot-nodtb.bin
1031IFDTOOL_FLAGS += -w $(CONFIG_SYS_X86_START16):$(objtree)/u-boot-x86-16bit.bin
1032IFDTOOL_FLAGS += -C
1033
1034ifneq ($(CONFIG_HAVE_INTEL_ME),)
1035IFDTOOL_ME_FLAGS  = -D $(srctree)/board/$(BOARDDIR)/descriptor.bin
1036IFDTOOL_ME_FLAGS += -i ME:$(srctree)/board/$(BOARDDIR)/me.bin
1037endif
1038
1039ifneq ($(CONFIG_HAVE_MRC),)
1040IFDTOOL_FLAGS += -w $(CONFIG_X86_MRC_ADDR):$(srctree)/board/$(BOARDDIR)/mrc.bin
1041endif
1042
1043ifneq ($(CONFIG_HAVE_FSP),)
1044IFDTOOL_FLAGS += -w $(CONFIG_FSP_ADDR):$(srctree)/board/$(BOARDDIR)/$(CONFIG_FSP_FILE)
1045endif
1046
1047ifneq ($(CONFIG_HAVE_CMC),)
1048IFDTOOL_FLAGS += -w $(CONFIG_CMC_ADDR):$(srctree)/board/$(BOARDDIR)/$(CONFIG_CMC_FILE)
1049endif
1050
1051ifneq ($(CONFIG_HAVE_VGA_BIOS),)
1052IFDTOOL_FLAGS += -w $(CONFIG_VGA_BIOS_ADDR):$(srctree)/board/$(BOARDDIR)/$(CONFIG_VGA_BIOS_FILE)
1053endif
1054
1055ifneq ($(CONFIG_HAVE_REFCODE),)
1056IFDTOOL_FLAGS += -w $(CONFIG_X86_REFCODE_ADDR):refcode.bin
1057endif
1058
1059quiet_cmd_ifdtool = IFDTOOL $@
1060cmd_ifdtool  = $(IFDTOOL) -c -r $(CONFIG_ROM_SIZE) u-boot.tmp;
1061ifneq ($(CONFIG_HAVE_INTEL_ME),)
1062cmd_ifdtool += $(IFDTOOL) $(IFDTOOL_ME_FLAGS) u-boot.tmp;
1063endif
1064cmd_ifdtool += $(IFDTOOL) $(IFDTOOL_FLAGS) u-boot.tmp;
1065cmd_ifdtool += mv u-boot.tmp $@
1066
1067refcode.bin: $(srctree)/board/$(BOARDDIR)/refcode.bin FORCE
1068	$(call if_changed,copy)
1069
1070quiet_cmd_ldr = LD      $@
1071cmd_ldr = $(LD) $(LDFLAGS_$(@F)) \
1072	       $(filter-out FORCE,$^) -o $@
1073
1074u-boot.rom: u-boot-x86-16bit.bin u-boot.bin FORCE \
1075		$(if $(CONFIG_HAVE_REFCODE),refcode.bin)
1076	$(call if_changed,ifdtool)
1077
1078OBJCOPYFLAGS_u-boot-x86-16bit.bin := -O binary -j .start16 -j .resetvec
1079u-boot-x86-16bit.bin: u-boot FORCE
1080	$(call if_changed,objcopy)
1081endif
1082
1083ifneq ($(CONFIG_SUNXI),)
1084OBJCOPYFLAGS_u-boot-sunxi-with-spl.bin = -I binary -O binary \
1085				   --pad-to=$(CONFIG_SPL_PAD_TO) --gap-fill=0xff
1086u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img FORCE
1087	$(call if_changed,pad_cat)
1088endif
1089
1090ifneq ($(CONFIG_TEGRA),)
1091OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1092u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot-nodtb.bin FORCE
1093	$(call if_changed,pad_cat)
1094
1095OBJCOPYFLAGS_u-boot-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1096u-boot-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
1097	$(call if_changed,pad_cat)
1098
1099u-boot-dtb-tegra.bin: u-boot-tegra.bin FORCE
1100	$(call if_changed,copy)
1101endif
1102
1103OBJCOPYFLAGS_u-boot-app.efi := $(OBJCOPYFLAGS_EFI)
1104u-boot-app.efi: u-boot FORCE
1105	$(call if_changed,zobjcopy)
1106
1107u-boot.bin.o: u-boot.bin FORCE
1108	$(call if_changed,efipayload)
1109
1110u-boot-payload.lds: $(LDSCRIPT_EFI) FORCE
1111	$(call if_changed_dep,cpp_lds)
1112
1113# Rule to link the EFI payload which contains a stub and a U-Boot binary
1114quiet_cmd_u-boot_payload ?= LD      $@
1115      cmd_u-boot_payload ?= $(LD) $(LDFLAGS_EFI_PAYLOAD) -o $@ \
1116      -T u-boot-payload.lds arch/x86/cpu/call32.o \
1117      lib/efi/efi.o lib/efi/efi_stub.o u-boot.bin.o \
1118      $(addprefix arch/$(ARCH)/lib/efi/,$(EFISTUB))
1119
1120u-boot-payload: u-boot.bin.o u-boot-payload.lds FORCE
1121	$(call if_changed,u-boot_payload)
1122
1123OBJCOPYFLAGS_u-boot-payload.efi := $(OBJCOPYFLAGS_EFI)
1124u-boot-payload.efi: u-boot-payload FORCE
1125	$(call if_changed,zobjcopy)
1126
1127u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
1128	$(call if_changed,cat)
1129
1130#Add a target to create boot binary having SPL binary in PBI format
1131#concatenated with u-boot binary. It is need by PowerPC SoC having
1132#internal SRAM <= 512KB.
1133MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1134		-R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \
1135		-A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE)
1136
1137spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
1138	$(call if_changed,mkimage)
1139
1140ifeq ($(ARCH),arm)
1141UBOOT_BINLOAD := u-boot.img
1142else
1143UBOOT_BINLOAD := u-boot.bin
1144endif
1145
1146OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1147			  --gap-fill=0xff
1148
1149u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE
1150	$(call if_changed,pad_cat)
1151
1152# PPC4xx needs the SPL at the end of the image, since the reset vector
1153# is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
1154# and need to introduce a new build target with the full blown U-Boot
1155# at the start padded up to the start of the SPL image. And then concat
1156# the SPL image to the end.
1157
1158OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
1159	--pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
1160u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
1161	$(call if_changed,pad_cat)
1162
1163# Create a new ELF from a raw binary file.  This is useful for arm64
1164# where static relocation needs to be performed on the raw binary,
1165# but certain simulators only accept an ELF file (but don't do the
1166# relocation).
1167# FIXME refactor dts/Makefile to share target/arch detection
1168u-boot.elf: u-boot.bin
1169	@$(OBJCOPY)  -B aarch64 -I binary -O elf64-littleaarch64 \
1170		$< u-boot-elf.o
1171	@$(LD) u-boot-elf.o -o $@ \
1172		--defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
1173		-Ttext=$(CONFIG_SYS_TEXT_BASE)
1174
1175# Rule to link u-boot
1176# May be overridden by arch/$(ARCH)/config.mk
1177quiet_cmd_u-boot__ ?= LD      $@
1178      cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
1179      -T u-boot.lds $(u-boot-init)                             \
1180      --start-group $(u-boot-main) --end-group                 \
1181      $(PLATFORM_LIBS) -Map u-boot.map
1182
1183quiet_cmd_smap = GEN     common/system_map.o
1184cmd_smap = \
1185	smap=`$(call SYSTEM_MAP,u-boot) | \
1186		awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
1187	$(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
1188		-c $(srctree)/common/system_map.c -o common/system_map.o
1189
1190u-boot:	$(u-boot-init) $(u-boot-main) u-boot.lds FORCE
1191	$(call if_changed,u-boot__)
1192ifeq ($(CONFIG_KALLSYMS),y)
1193	$(call cmd,smap)
1194	$(call cmd,u-boot__) common/system_map.o
1195endif
1196
1197quiet_cmd_sym ?= SYM     $@
1198      cmd_sym ?= $(OBJDUMP) -t $< > $@
1199u-boot.sym: u-boot FORCE
1200	$(call if_changed,sym)
1201
1202# The actual objects are generated when descending,
1203# make sure no implicit rule kicks in
1204$(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
1205
1206# Handle descending into subdirectories listed in $(vmlinux-dirs)
1207# Preset locale variables to speed up the build process. Limit locale
1208# tweaks to this spot to avoid wrong language settings when running
1209# make menuconfig etc.
1210# Error messages still appears in the original language
1211
1212PHONY += $(u-boot-dirs)
1213$(u-boot-dirs): prepare scripts
1214	$(Q)$(MAKE) $(build)=$@
1215
1216tools: prepare
1217# The "tools" are needed early
1218$(filter-out tools, $(u-boot-dirs)): tools
1219# The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
1220# is "yes"), so compile examples after U-Boot is compiled.
1221examples: $(filter-out examples, $(u-boot-dirs))
1222
1223define filechk_uboot.release
1224	echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1225endef
1226
1227# Store (new) UBOOTRELEASE string in include/config/uboot.release
1228include/config/uboot.release: include/config/auto.conf FORCE
1229	$(call filechk,uboot.release)
1230
1231
1232# Things we need to do before we recursively start building the kernel
1233# or the modules are listed in "prepare".
1234# A multi level approach is used. prepareN is processed before prepareN-1.
1235# archprepare is used in arch Makefiles and when processed asm symlink,
1236# version.h and scripts_basic is processed / created.
1237
1238# Listed in dependency order
1239PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1240
1241# prepare3 is used to check if we are building in a separate output directory,
1242# and if so do:
1243# 1) Check that make has not been executed in the kernel src $(srctree)
1244prepare3: include/config/uboot.release
1245ifneq ($(KBUILD_SRC),)
1246	@$(kecho) '  Using $(srctree) as source for U-Boot'
1247	$(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
1248		echo >&2 "  $(srctree) is not clean, please run 'make mrproper'"; \
1249		echo >&2 "  in the '$(srctree)' directory.";\
1250		/bin/false; \
1251	fi;
1252endif
1253
1254# prepare2 creates a makefile if using a separate output directory
1255prepare2: prepare3 outputmakefile
1256
1257prepare1: prepare2 $(version_h) $(timestamp_h) \
1258                   include/config/auto.conf
1259ifeq ($(CONFIG_HAVE_GENERIC_BOARD),)
1260ifeq ($(CONFIG_SYS_GENERIC_BOARD),y)
1261	@echo >&2 "  Your architecture does not support generic board."
1262	@echo >&2 "  Please undefine CONFIG_SYS_GENERIC_BOARD in your board config file."
1263	@/bin/false
1264endif
1265endif
1266ifeq ($(wildcard $(LDSCRIPT)),)
1267	@echo >&2 "  Could not find linker script."
1268	@/bin/false
1269endif
1270
1271archprepare: prepare1 scripts_basic
1272
1273prepare0: archprepare FORCE
1274	$(Q)$(MAKE) $(build)=.
1275
1276# All the preparing..
1277prepare: prepare0
1278
1279# Generate some files
1280# ---------------------------------------------------------------------------
1281
1282define filechk_version.h
1283	(echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1284	echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1285	echo \#define CC_VERSION_STRING \"$$($(CC) --version | head -n 1)\"; \
1286	echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; )
1287endef
1288
1289# The SOURCE_DATE_EPOCH mechanism requires a date that behaves like GNU date.
1290# The BSD date on the other hand behaves different and would produce errors
1291# with the misused '-d' switch.  Respect that and search a working date with
1292# well known pre- and suffixes for the GNU variant of date.
1293define filechk_timestamp.h
1294	(if test -n "$${SOURCE_DATE_EPOCH}"; then \
1295		SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \
1296		DATE=""; \
1297		for date in gdate date.gnu date; do \
1298			$${date} -u -d "$${SOURCE_DATE}" >/dev/null 2>&1 && DATE="$${date}"; \
1299		done; \
1300		if test -n "$${DATE}"; then \
1301			LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DATE "%b %d %C%y"'; \
1302			LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TIME "%T"'; \
1303			LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TZ "%z"'; \
1304			LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1305		else \
1306			return 42; \
1307		fi; \
1308	else \
1309		LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1310		LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \
1311		LC_ALL=C date +'#define U_BOOT_TZ "%z"'; \
1312		LC_ALL=C date +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
1313	fi)
1314endef
1315
1316$(version_h): include/config/uboot.release FORCE
1317	$(call filechk,version.h)
1318
1319$(timestamp_h): $(srctree)/Makefile FORCE
1320	$(call filechk,timestamp.h)
1321
1322# ---------------------------------------------------------------------------
1323quiet_cmd_cpp_lds = LDS     $@
1324cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
1325		-D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
1326
1327u-boot.lds: $(LDSCRIPT) prepare FORCE
1328	$(call if_changed_dep,cpp_lds)
1329
1330spl/u-boot-spl.bin: spl/u-boot-spl
1331	@:
1332spl/u-boot-spl: tools prepare $(if $(CONFIG_OF_SEPARATE),dts/dt.dtb)
1333	$(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all
1334
1335spl/sunxi-spl.bin: spl/u-boot-spl
1336	@:
1337
1338spl/u-boot-spl.sfp: spl/u-boot-spl
1339	@:
1340
1341spl/boot.bin: spl/u-boot-spl
1342	@:
1343
1344tpl/u-boot-tpl.bin: tools prepare
1345	$(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
1346
1347TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
1348
1349FIND := find
1350FINDFLAGS := -L
1351
1352tags ctags:
1353		ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1354						-name '*.[chS]' -print`
1355		ln -s ctags tags
1356
1357etags:
1358		etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1359						-name '*.[chS]' -print`
1360cscope:
1361		$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1362						cscope.files
1363		cscope -b -q -k
1364
1365SYSTEM_MAP = \
1366		$(NM) $1 | \
1367		grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1368		LC_ALL=C sort
1369System.map:	u-boot
1370		@$(call SYSTEM_MAP,$<) > $@
1371
1372checkdtc:
1373	@if test $(call dtc-version) -lt 0104; then \
1374		echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
1375		false; \
1376	fi
1377
1378#########################################################################
1379
1380# ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1381# R_AARCH64_RELATIVE (64-bit).
1382checkarmreloc: u-boot
1383	@RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1384		grep R_A | sort -u`"; \
1385	if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1386		 "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1387		echo "$< contains unexpected relocations: $$RELOC"; \
1388		false; \
1389	fi
1390
1391env: scripts_basic
1392	$(Q)$(MAKE) $(build)=tools/$@
1393
1394tools-only: scripts_basic $(version_h) $(timestamp_h)
1395	$(Q)$(MAKE) $(build)=tools
1396
1397tools-all: export HOST_TOOLS_ALL=y
1398tools-all: env tools ;
1399
1400cross_tools: export CROSS_BUILD_TOOLS=y
1401cross_tools: tools ;
1402
1403.PHONY : CHANGELOG
1404CHANGELOG:
1405	git log --no-merges U-Boot-1_1_5.. | \
1406	unexpand -a | sed -e 's/\s\s*$$//' > $@
1407
1408#########################################################################
1409
1410###
1411# Cleaning is done on three levels.
1412# make clean     Delete most generated files
1413#                Leave enough to build external modules
1414# make mrproper  Delete the current configuration, and all generated files
1415# make distclean Remove editor backup files, patch leftover files and the like
1416
1417# Directories & files removed with 'make clean'
1418CLEAN_DIRS  += $(MODVERDIR) \
1419	       $(foreach d, spl tpl, $(patsubst %,$d/%, \
1420			$(filter-out include, $(shell ls -1 $d 2>/dev/null))))
1421
1422CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h include/license.h \
1423	       boot* u-boot* MLO* SPL System.map
1424
1425# Directories & files removed with 'make mrproper'
1426MRPROPER_DIRS  += include/config include/generated spl tpl \
1427		  .tmp_objdiff
1428MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \
1429		  ctags etags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
1430
1431# clean - Delete most, but leave enough to build external modules
1432#
1433clean: rm-dirs  := $(CLEAN_DIRS)
1434clean: rm-files := $(CLEAN_FILES)
1435
1436clean-dirs	:= $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
1437
1438clean-dirs      := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
1439
1440PHONY += $(clean-dirs) clean archclean
1441$(clean-dirs):
1442	$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1443
1444# TODO: Do not use *.cfgtmp
1445clean: $(clean-dirs)
1446	$(call cmd,rmdirs)
1447	$(call cmd,rmfiles)
1448	@find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1449		\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1450		-o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
1451		-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1452		-o -name '*.symtypes' -o -name 'modules.order' \
1453		-o -name modules.builtin -o -name '.tmp_*.o.*' \
1454		-o -name '*.gcno' \) -type f -print | xargs rm -f
1455
1456# mrproper - Delete all generated files, including .config
1457#
1458mrproper: rm-dirs  := $(wildcard $(MRPROPER_DIRS))
1459mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1460mrproper-dirs      := $(addprefix _mrproper_,scripts)
1461
1462PHONY += $(mrproper-dirs) mrproper archmrproper
1463$(mrproper-dirs):
1464	$(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1465
1466mrproper: clean $(mrproper-dirs)
1467	$(call cmd,rmdirs)
1468	$(call cmd,rmfiles)
1469	@rm -f arch/*/include/asm/arch
1470
1471# distclean
1472#
1473PHONY += distclean
1474
1475distclean: mrproper
1476	@find $(srctree) $(RCS_FIND_IGNORE) \
1477		\( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1478		-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1479		-o -name '.*.rej' -o -name '*%' -o -name 'core' \
1480		-o -name '*.pyc' \) \
1481		-type f -print | xargs rm -f
1482	@rm -f boards.cfg
1483
1484backup:
1485	F=`basename $(srctree)` ; cd .. ; \
1486	gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1487
1488help:
1489	@echo  'Cleaning targets:'
1490	@echo  '  clean		  - Remove most generated files but keep the config'
1491	@echo  '  mrproper	  - Remove all generated files + config + various backup files'
1492	@echo  '  distclean	  - mrproper + remove editor backup and patch files'
1493	@echo  ''
1494	@echo  'Configuration targets:'
1495	@$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1496	@echo  ''
1497	@echo  'Other generic targets:'
1498	@echo  '  all		  - Build all necessary images depending on configuration'
1499	@echo  '* u-boot	  - Build the bare u-boot'
1500	@echo  '  dir/            - Build all files in dir and below'
1501	@echo  '  dir/file.[oisS] - Build specified target only'
1502	@echo  '  dir/file.lst    - Build specified mixed source/assembly target only'
1503	@echo  '                    (requires a recent binutils and recent build (System.map))'
1504	@echo  '  tags/ctags	  - Generate ctags file for editors'
1505	@echo  '  etags		  - Generate etags file for editors'
1506	@echo  '  cscope	  - Generate cscope index'
1507	@echo  '  ubootrelease	  - Output the release version string (use with make -s)'
1508	@echo  '  ubootversion	  - Output the version stored in Makefile (use with make -s)'
1509	@echo  ''
1510	@echo  'Static analysers'
1511	@echo  '  checkstack      - Generate a list of stack hogs'
1512	@echo  ''
1513	@echo  'Documentation targets:'
1514	@$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
1515	@echo  ''
1516	@echo  '  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1517	@echo  '  make V=2   [targets] 2 => give reason for rebuild of target'
1518	@echo  '  make O=dir [targets] Locate all output files in "dir", including .config'
1519	@echo  '  make C=1   [targets] Check all c source with $$CHECK (sparse by default)'
1520	@echo  '  make C=2   [targets] Force check of all c source with $$CHECK'
1521	@echo  '  make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1522	@echo  '  make W=n   [targets] Enable extra gcc checks, n=1,2,3 where'
1523	@echo  '		1: warnings which may be relevant and do not occur too often'
1524	@echo  '		2: warnings which occur quite often but may still be relevant'
1525	@echo  '		3: more obscure warnings, can most likely be ignored'
1526	@echo  '		Multiple levels can be combined with W=12 or W=123'
1527	@echo  ''
1528	@echo  'Execute "make" or "make all" to build all targets marked with [*] '
1529	@echo  'For further info see the ./README file'
1530
1531
1532# Documentation targets
1533# ---------------------------------------------------------------------------
1534%docs: scripts_basic FORCE
1535	$(Q)$(MAKE) $(build)=scripts build_docproc
1536	$(Q)$(MAKE) $(build)=doc/DocBook $@
1537
1538# Dummies...
1539PHONY += prepare scripts
1540prepare: ;
1541scripts: ;
1542
1543endif #ifeq ($(config-targets),1)
1544endif #ifeq ($(mixed-targets),1)
1545
1546PHONY += checkstack ubootrelease ubootversion
1547
1548checkstack:
1549	$(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1550	$(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1551
1552ubootrelease:
1553	@echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1554
1555ubootversion:
1556	@echo $(UBOOTVERSION)
1557
1558# Single targets
1559# ---------------------------------------------------------------------------
1560# Single targets are compatible with:
1561# - build with mixed source and output
1562# - build with separate output dir 'make O=...'
1563# - external modules
1564#
1565#  target-dir => where to store outputfile
1566#  build-dir  => directory in kernel source tree to use
1567
1568ifeq ($(KBUILD_EXTMOD),)
1569        build-dir  = $(patsubst %/,%,$(dir $@))
1570        target-dir = $(dir $@)
1571else
1572        zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1573        build-dir  = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1574        target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1575endif
1576
1577%.s: %.c prepare scripts FORCE
1578	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1579%.i: %.c prepare scripts FORCE
1580	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1581%.o: %.c prepare scripts FORCE
1582	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1583%.lst: %.c prepare scripts FORCE
1584	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1585%.s: %.S prepare scripts FORCE
1586	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1587%.o: %.S prepare scripts FORCE
1588	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1589%.symtypes: %.c prepare scripts FORCE
1590	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1591
1592# Modules
1593/: prepare scripts FORCE
1594	$(cmd_crmodverdir)
1595	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1596	$(build)=$(build-dir)
1597%/: prepare scripts FORCE
1598	$(cmd_crmodverdir)
1599	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1600	$(build)=$(build-dir)
1601%.ko: prepare scripts FORCE
1602	$(cmd_crmodverdir)
1603	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1)   \
1604	$(build)=$(build-dir) $(@:.ko=.o)
1605	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1606
1607# FIXME Should go into a make.lib or something
1608# ===========================================================================
1609
1610quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN   $(wildcard $(rm-dirs)))
1611      cmd_rmdirs = rm -rf $(rm-dirs)
1612
1613quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files)))
1614      cmd_rmfiles = rm -f $(rm-files)
1615
1616# read all saved command lines
1617
1618targets := $(wildcard $(sort $(targets)))
1619cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1620
1621ifneq ($(cmd_files),)
1622  $(cmd_files): ;	# Do not try to update included dependency files
1623  include $(cmd_files)
1624endif
1625
1626endif	# skip-makefile
1627
1628PHONY += FORCE
1629FORCE:
1630
1631# Declare the contents of the .PHONY variable as phony.  We keep that
1632# information in a variable so we can use it in if_changed and friends.
1633.PHONY: $(PHONY)
1634