[J-u-boot.git] / scripts / Makefile.lib

# Backward compatibility
asflags-y  += $(EXTRA_AFLAGS)
ccflags-y  += $(EXTRA_CFLAGS)
cppflags-y += $(EXTRA_CPPFLAGS)
ldflags-y  += $(EXTRA_LDFLAGS)

#
# flags that take effect in sub directories
export KBUILD_SUBDIR_ASFLAGS := $(KBUILD_SUBDIR_ASFLAGS) $(subdir-asflags-y)
export KBUILD_SUBDIR_CCFLAGS := $(KBUILD_SUBDIR_CCFLAGS) $(subdir-ccflags-y)

# Figure out what we need to build from the various variables
# ===========================================================================

# When an object is listed to be built compiled-in and modular,
# only build the compiled-in version

obj-m := $(filter-out $(obj-y),$(obj-m))

# Libraries are always collected in one lib file.
# Filter out objects already built-in

lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))


# Handle objects in subdirs
# ---------------------------------------------------------------------------
# o if we encounter foo/ in $(obj-y), replace it by foo/built-in.o
#   and add the directory to the list of dirs to descend into: $(subdir-y)
# o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
#   and add the directory to the list of dirs to descend into: $(subdir-m)

# Determine modorder.
# Unfortunately, we don't have information about ordering between -y
# and -m subdirs.  Just put -y's first.
modorder	:= $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))

__subdir-y	:= $(patsubst %/,%,$(filter %/, $(obj-y)))
subdir-y	+= $(__subdir-y)
__subdir-m	:= $(patsubst %/,%,$(filter %/, $(obj-m)))
subdir-m	+= $(__subdir-m)
obj-y		:= $(patsubst %/, %/built-in.o, $(obj-y))
obj-m		:= $(filter-out %/, $(obj-m))

# Subdirectories we need to descend into

subdir-ym	:= $(sort $(subdir-y) $(subdir-m))

# if $(foo-objs) exists, foo.o is a composite object
multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
multi-used   := $(multi-used-y) $(multi-used-m)
single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m)))

# Build list of the parts of our composite objects, our composite
# objects depend on those (obviously)
multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y)))
multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)))
multi-objs   := $(multi-objs-y) $(multi-objs-m)

# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
# tell kbuild to descend
subdir-obj-y := $(filter %/built-in.o, $(obj-y))

# $(obj-dirs) is a list of directories that contain object files
obj-dirs := $(dir $(multi-objs) $(obj-y))

# Replace multi-part objects by their individual parts, look at local dir only
real-objs-y := $(foreach m, $(filter-out $(subdir-obj-y), $(obj-y)), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m))) $(extra-y)
real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))

# Add subdir path

extra-y		:= $(addprefix $(obj)/,$(extra-y))
always		:= $(addprefix $(obj)/,$(always))
targets		:= $(addprefix $(obj)/,$(targets))
modorder	:= $(addprefix $(obj)/,$(modorder))
obj-y		:= $(addprefix $(obj)/,$(obj-y))
obj-m		:= $(addprefix $(obj)/,$(obj-m))
lib-y		:= $(addprefix $(obj)/,$(lib-y))
subdir-obj-y	:= $(addprefix $(obj)/,$(subdir-obj-y))
real-objs-y	:= $(addprefix $(obj)/,$(real-objs-y))
real-objs-m	:= $(addprefix $(obj)/,$(real-objs-m))
single-used-m	:= $(addprefix $(obj)/,$(single-used-m))
multi-used-y	:= $(addprefix $(obj)/,$(multi-used-y))
multi-used-m	:= $(addprefix $(obj)/,$(multi-used-m))
multi-objs-y	:= $(addprefix $(obj)/,$(multi-objs-y))
multi-objs-m	:= $(addprefix $(obj)/,$(multi-objs-m))
subdir-ym	:= $(addprefix $(obj)/,$(subdir-ym))
obj-dirs	:= $(addprefix $(obj)/,$(obj-dirs))

# These flags are needed for modversions and compiling, so we define them here
# already
# $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will
# end up in (or would, if it gets compiled in)
# Note: Files that end up in two or more modules are compiled without the
#       KBUILD_MODNAME definition. The reason is that any made-up name would
#       differ in different configs.
name-fix = $(subst $(comma),_,$(subst -,_,$1))
basename_flags = -D"KBUILD_BASENAME=KBUILD_STR($(call name-fix,$(basetarget)))"
modname_flags  = $(if $(filter 1,$(words $(modname))),\
                 -D"KBUILD_MODNAME=KBUILD_STR($(call name-fix,$(modname)))")

orig_c_flags   = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \
                 $(ccflags-y) $(CFLAGS_$(basetarget).o)
_c_flags       = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
orig_a_flags   = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \
                 $(asflags-y) $(AFLAGS_$(basetarget).o)
_a_flags       = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags))
_cpp_flags     = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))

#
# Enable gcov profiling flags for a file, directory or for all files depending
# on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL
# (in this order)
#
ifeq ($(CONFIG_GCOV_KERNEL),y)
_c_flags += $(if $(patsubst n%,, \
		$(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \
		$(CFLAGS_GCOV))
endif

#
# Enable address sanitizer flags for kernel except some files or directories
# we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE)
#
ifeq ($(CONFIG_KASAN),y)
_c_flags += $(if $(patsubst n%,, \
		$(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \
		$(CFLAGS_KASAN))
endif

# If building the kernel in a separate objtree expand all occurrences
# of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').

ifeq ($(KBUILD_SRC),)
__c_flags	= $(_c_flags)
__a_flags	= $(_a_flags)
__cpp_flags     = $(_cpp_flags)
else

# -I$(obj) locates generated .h files
# $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files
#   and locates generated .h files
# FIXME: Replace both with specific CFLAGS* statements in the makefiles
__c_flags	= $(call addtree,-I$(obj)) $(call flags,_c_flags)
__a_flags	=                          $(call flags,_a_flags)
__cpp_flags     =                          $(call flags,_cpp_flags)
endif

# Modified for U-Boot: LINUXINCLUDE -> UBOOTINCLUDE
c_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
		 $(__c_flags) $(modkern_cflags)                           \
		 -D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags)

a_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
		 $(__a_flags) $(modkern_aflags)

cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
		 $(__cpp_flags)

ld_flags       = $(LDFLAGS) $(ldflags-y)

# Modified for U-Boot
dtc_cpp_flags  = -Wp,-MD,$(depfile).pre.tmp -nostdinc                    \
		 -I$(srctree)/arch/$(ARCH)/dts                           \
		 -I$(srctree)/arch/$(ARCH)/dts/include                   \
		 -undef -D__DTS__

# Finds the multi-part object the current object will be linked into
modname-multi = $(sort $(foreach m,$(multi-used),\
		$(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))

# Useful for describing the dependency of composite objects
# Usage:
#   $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add)
define multi_depend
$(foreach m, $(notdir $1), \
	$(eval $(obj)/$m: \
	$(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
endef

ifdef REGENERATE_PARSERS

# GPERF
# ---------------------------------------------------------------------------
quiet_cmd_gperf = GPERF $@
      cmd_gperf = gperf -t --output-file $@ -a -C -E -g -k 1,3,$$ -p -t $<

.PRECIOUS: $(src)/%.hash.c_shipped
$(src)/%.hash.c_shipped: $(src)/%.gperf
	$(call cmd,gperf)

# LEX
# ---------------------------------------------------------------------------
LEX_PREFIX = $(if $(LEX_PREFIX_${baseprereq}),$(LEX_PREFIX_${baseprereq}),yy)

quiet_cmd_flex = LEX     $@
      cmd_flex = flex -o$@ -L -P $(LEX_PREFIX) $<

.PRECIOUS: $(src)/%.lex.c_shipped
$(src)/%.lex.c_shipped: $(src)/%.l
	$(call cmd,flex)

# YACC
# ---------------------------------------------------------------------------
YACC_PREFIX = $(if $(YACC_PREFIX_${baseprereq}),$(YACC_PREFIX_${baseprereq}),yy)

quiet_cmd_bison = YACC    $@
      cmd_bison = bison -o$@ -t -l -p $(YACC_PREFIX) $<

.PRECIOUS: $(src)/%.tab.c_shipped
$(src)/%.tab.c_shipped: $(src)/%.y
	$(call cmd,bison)

quiet_cmd_bison_h = YACC    $@
      cmd_bison_h = bison -o/dev/null --defines=$@ -t -l -p $(YACC_PREFIX) $<

.PRECIOUS: $(src)/%.tab.h_shipped
$(src)/%.tab.h_shipped: $(src)/%.y
	$(call cmd,bison_h)

endif

# Shipped files
# ===========================================================================

quiet_cmd_shipped = SHIPPED $@
cmd_shipped = cat $< > $@

$(obj)/%: $(src)/%_shipped
	$(call cmd,shipped)

# Commands useful for building a boot image
# ===========================================================================
#
#	Use as following:
#
#	target: source(s) FORCE
#		$(if_changed,ld/objcopy/gzip)
#
#	and add target to extra-y so that we know we have to
#	read in the saved command line

# Linking
# ---------------------------------------------------------------------------

quiet_cmd_ld = LD      $@
cmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \
	       $(filter-out FORCE,$^) -o $@

# Objcopy
# ---------------------------------------------------------------------------

quiet_cmd_objcopy = OBJCOPY $@
cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@

# Gzip
# ---------------------------------------------------------------------------

quiet_cmd_gzip = GZIP    $@
cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \
	(rm -f $@ ; false)

# DTC
# ---------------------------------------------------------------------------

# Generate an assembly file to wrap the output of the device tree compiler
quiet_cmd_dt_S_dtb= DTB     $@
# Modified for U-Boot
cmd_dt_S_dtb=						\
(							\
	echo '.section .dtb.init.rodata,"a"';		\
	echo '.balign 16';				\
	echo '.global __dtb_$(*F)_begin';		\
	echo '__dtb_$(*F)_begin:';			\
	echo '.incbin "$<" ';				\
	echo '__dtb_$(*F)_end:';			\
	echo '.global __dtb_$(*F)_end';			\
	echo '.balign 16';				\
) > $@

$(obj)/%.dtb.S: $(obj)/%.dtb
	$(call cmd,dt_S_dtb)

quiet_cmd_dtc = DTC     $@
# Modified for U-Boot
cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
	$(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
	$(DTC) -O dtb -o $@ -b 0 \
		-i $(dir $<) $(DTC_FLAGS) \
		-d $(depfile).dtc.tmp $(dtc-tmp) ; \
	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)

$(obj)/%.dtb: $(src)/%.dts FORCE
	$(call if_changed_dep,dtc)

dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)

# Bzip2
# ---------------------------------------------------------------------------

# Bzip2 and LZMA do not include size in file... so we have to fake that;
# append the size as a 32-bit littleendian number as gzip does.
size_append = printf $(shell						\
dec_size=0;								\
for F in $1; do								\
	fsize=$$(stat -c "%s" $$F);					\
	dec_size=$$(expr $$dec_size + $$fsize);				\
done;									\
printf "%08x\n" $$dec_size |						\
	sed 's/\(..\)/\1 /g' | {					\
		read ch0 ch1 ch2 ch3;					\
		for ch in $$ch3 $$ch2 $$ch1 $$ch0; do			\
			printf '%s%03o' '\\' $$((0x$$ch)); 		\
		done;							\
	}								\
)

quiet_cmd_bzip2 = BZIP2   $@
cmd_bzip2 = (cat $(filter-out FORCE,$^) | \
	bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
	(rm -f $@ ; false)

# Lzma
# ---------------------------------------------------------------------------

quiet_cmd_lzma = LZMA    $@
cmd_lzma = (cat $(filter-out FORCE,$^) | \
	lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
	(rm -f $@ ; false)

quiet_cmd_lzo = LZO     $@
cmd_lzo = (cat $(filter-out FORCE,$^) | \
	lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
	(rm -f $@ ; false)

quiet_cmd_lz4 = LZ4     $@
cmd_lz4 = (cat $(filter-out FORCE,$^) | \
	lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
	(rm -f $@ ; false)

# U-Boot mkimage
# ---------------------------------------------------------------------------

MKIMAGE := $(srctree)/scripts/mkuboot.sh

# SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces
# the number of overrides in arch makefiles
UIMAGE_ARCH ?= $(SRCARCH)
UIMAGE_COMPRESSION ?= $(if $(2),$(2),none)
UIMAGE_OPTS-y ?=
UIMAGE_TYPE ?= kernel
UIMAGE_LOADADDR ?= arch_must_set_this
UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR)
UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)'
UIMAGE_IN ?= $<
UIMAGE_OUT ?= $@

quiet_cmd_uimage = UIMAGE  $(UIMAGE_OUT)
      cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
			-C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \
			-T $(UIMAGE_TYPE) \
			-a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \
			-n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT)

# XZ
# ---------------------------------------------------------------------------
# Use xzkern to compress the kernel image and xzmisc to compress other things.
#
# xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
# of the kernel decompressor. A BCJ filter is used if it is available for
# the target architecture. xzkern also appends uncompressed size of the data
# using size_append. The .xz format has the size information available at
# the end of the file too, but it's in more complex format and it's good to
# avoid changing the part of the boot code that reads the uncompressed size.
# Note that the bytes added by size_append will make the xz tool think that
# the file is corrupt. This is expected.
#
# xzmisc doesn't use size_append, so it can be used to create normal .xz
# files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
# big dictionary would increase the memory usage too much in the multi-call
# decompression mode. A BCJ filter isn't used either.
quiet_cmd_xzkern = XZKERN  $@
cmd_xzkern = (cat $(filter-out FORCE,$^) | \
	sh $(srctree)/scripts/xz_wrap.sh && \
	$(call size_append, $(filter-out FORCE,$^))) > $@ || \
	(rm -f $@ ; false)

quiet_cmd_xzmisc = XZMISC  $@
cmd_xzmisc = (cat $(filter-out FORCE,$^) | \
	xz --check=crc32 --lzma2=dict=1MiB) > $@ || \
	(rm -f $@ ; false)

# Additional commands for U-Boot
#
# mkimage
# ---------------------------------------------------------------------------
quiet_cmd_mkimage = MKIMAGE $@
cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
	$(if $(KBUILD_VERBOSE:1=), >/dev/null)
Commit	Line	Data
22433fc5 MY	1	# Backward compatibility
	2	asflags-y += $(EXTRA_AFLAGS)
	3	ccflags-y += $(EXTRA_CFLAGS)
	4	cppflags-y += $(EXTRA_CPPFLAGS)
	5	ldflags-y += $(EXTRA_LDFLAGS)
	6
	7	#
	8	# flags that take effect in sub directories
	9	export KBUILD_SUBDIR_ASFLAGS := $(KBUILD_SUBDIR_ASFLAGS) $(subdir-asflags-y)
	10	export KBUILD_SUBDIR_CCFLAGS := $(KBUILD_SUBDIR_CCFLAGS) $(subdir-ccflags-y)
	11
	12	# Figure out what we need to build from the various variables
	13	# ===========================================================================
	14
	15	# When an object is listed to be built compiled-in and modular,
	16	# only build the compiled-in version
	17
	18	obj-m := $(filter-out $(obj-y),$(obj-m))
	19
	20	# Libraries are always collected in one lib file.
	21	# Filter out objects already built-in
	22
	23	lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
	24
	25
	26	# Handle objects in subdirs
	27	# ---------------------------------------------------------------------------
	28	# o if we encounter foo/ in $(obj-y), replace it by foo/built-in.o
	29	# and add the directory to the list of dirs to descend into: $(subdir-y)
45f0ad95	30	# o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
22433fc5 MY	31	# and add the directory to the list of dirs to descend into: $(subdir-m)
	32
	33	# Determine modorder.
	34	# Unfortunately, we don't have information about ordering between -y
	35	# and -m subdirs. Just put -y's first.
	36	modorder := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))
	37
	38	__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
	39	subdir-y += $(__subdir-y)
	40	__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
	41	subdir-m += $(__subdir-m)
	42	obj-y := $(patsubst %/, %/built-in.o, $(obj-y))
	43	obj-m := $(filter-out %/, $(obj-m))
	44
	45	# Subdirectories we need to descend into
	46
	47	subdir-ym := $(sort $(subdir-y) $(subdir-m))
	48
45f0ad95	49	# if $(foo-objs) exists, foo.o is a composite object
22433fc5 MY	50	multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
	51	multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
	52	multi-used := $(multi-used-y) $(multi-used-m)
	53	single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m)))
	54
	55	# Build list of the parts of our composite objects, our composite
	56	# objects depend on those (obviously)
	57	multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y)))
	58	multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)))
	59	multi-objs := $(multi-objs-y) $(multi-objs-m)
	60
	61	# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
	62	# tell kbuild to descend
	63	subdir-obj-y := $(filter %/built-in.o, $(obj-y))
	64
	65	# $(obj-dirs) is a list of directories that contain object files
	66	obj-dirs := $(dir $(multi-objs) $(obj-y))
	67
	68	# Replace multi-part objects by their individual parts, look at local dir only
	69	real-objs-y := $(foreach m, $(filter-out $(subdir-obj-y), $(obj-y)), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m))) $(extra-y)
	70	real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
	71
	72	# Add subdir path
	73
	74	extra-y := $(addprefix $(obj)/,$(extra-y))
	75	always := $(addprefix $(obj)/,$(always))
	76	targets := $(addprefix $(obj)/,$(targets))
	77	modorder := $(addprefix $(obj)/,$(modorder))
	78	obj-y := $(addprefix $(obj)/,$(obj-y))
	79	obj-m := $(addprefix $(obj)/,$(obj-m))
	80	lib-y := $(addprefix $(obj)/,$(lib-y))
	81	subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y))
	82	real-objs-y := $(addprefix $(obj)/,$(real-objs-y))
	83	real-objs-m := $(addprefix $(obj)/,$(real-objs-m))
	84	single-used-m := $(addprefix $(obj)/,$(single-used-m))
	85	multi-used-y := $(addprefix $(obj)/,$(multi-used-y))
	86	multi-used-m := $(addprefix $(obj)/,$(multi-used-m))
	87	multi-objs-y := $(addprefix $(obj)/,$(multi-objs-y))
	88	multi-objs-m := $(addprefix $(obj)/,$(multi-objs-m))
	89	subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
	90	obj-dirs := $(addprefix $(obj)/,$(obj-dirs))
	91
	92	# These flags are needed for modversions and compiling, so we define them here
	93	# already
45f0ad95	94	# $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will
22433fc5 MY	95	# end up in (or would, if it gets compiled in)
	96	# Note: Files that end up in two or more modules are compiled without the
	97	# KBUILD_MODNAME definition. The reason is that any made-up name would
	98	# differ in different configs.
	99	name-fix = $(subst $(comma),_,$(subst -,_,$1))
	100	basename_flags = -D"KBUILD_BASENAME=KBUILD_STR($(call name-fix,$(basetarget)))"
	101	modname_flags = $(if $(filter 1,$(words $(modname))),\
	102	-D"KBUILD_MODNAME=KBUILD_STR($(call name-fix,$(modname)))")
	103
026f9cf2	104	orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \
22433fc5 MY	105	$(ccflags-y) $(CFLAGS_$(basetarget).o)
22433fc5 MY	106	_c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
3834f417	107	orig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \
22433fc5	108	$(asflags-y) $(AFLAGS_$(basetarget).o)
3834f417	109	_a_flags = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags))
026f9cf2	110	_cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
22433fc5 MY	111
	112	#
	113	# Enable gcov profiling flags for a file, directory or for all files depending
	114	# on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL
	115	# (in this order)
	116	#
	117	ifeq ($(CONFIG_GCOV_KERNEL),y)
	118	_c_flags += $(if $(patsubst n%,, \
	119	$(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \
	120	$(CFLAGS_GCOV))
	121	endif
	122
98bd0e0d MY	123	#
	124	# Enable address sanitizer flags for kernel except some files or directories
	125	# we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE)
	126	#
	127	ifeq ($(CONFIG_KASAN),y)
	128	_c_flags += $(if $(patsubst n%,, \
	129	$(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \
	130	$(CFLAGS_KASAN))
	131	endif
	132
22433fc5 MY	133	# If building the kernel in a separate objtree expand all occurrences
	134	# of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
	135
	136	ifeq ($(KBUILD_SRC),)
	137	__c_flags = $(_c_flags)
	138	__a_flags = $(_a_flags)
	139	__cpp_flags = $(_cpp_flags)
	140	else
	141
	142	# -I$(obj) locates generated .h files
	143	# $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files
	144	# and locates generated .h files
	145	# FIXME: Replace both with specific CFLAGS* statements in the makefiles
	146	__c_flags = $(call addtree,-I$(obj)) $(call flags,_c_flags)
	147	__a_flags = $(call flags,_a_flags)
	148	__cpp_flags = $(call flags,_cpp_flags)
	149	endif
	150
6825a95b MY	151	# Modified for U-Boot: LINUXINCLUDE -> UBOOTINCLUDE
6825a95b MY	152	c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \
22433fc5 MY	153	$(__c_flags) $(modkern_cflags) \
	154	-D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags)
	155
6825a95b	156	a_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \
22433fc5 MY	157	$(__a_flags) $(modkern_aflags)
22433fc5 MY	158
6825a95b	159	cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \
22433fc5 MY	160	$(__cpp_flags)
	161
	162	ld_flags = $(LDFLAGS) $(ldflags-y)
	163
6ab6b2af	164	# Modified for U-Boot
22433fc5	165	dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \
6ab6b2af	166	-I$(srctree)/arch/$(ARCH)/dts \
5957ac2a	167	-I$(srctree)/arch/$(ARCH)/dts/include \
22433fc5 MY	168	-undef -D__DTS__
	169
	170	# Finds the multi-part object the current object will be linked into
	171	modname-multi = $(sort $(foreach m,$(multi-used),\
	172	$(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))
	173
cb6e7b0d MY	174	# Useful for describing the dependency of composite objects
	175	# Usage:
	176	# $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add)
	177	define multi_depend
	178	$(foreach m, $(notdir $1), \
	179	$(eval $(obj)/$m: \
	180	$(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
	181	endef
	182
22433fc5 MY	183	ifdef REGENERATE_PARSERS
	184
	185	# GPERF
	186	# ---------------------------------------------------------------------------
	187	quiet_cmd_gperf = GPERF $@
	188	cmd_gperf = gperf -t --output-file $@ -a -C -E -g -k 1,3,$$ -p -t $<
	189
	190	.PRECIOUS: $(src)/%.hash.c_shipped
	191	$(src)/%.hash.c_shipped: $(src)/%.gperf
	192	$(call cmd,gperf)
	193
	194	# LEX
	195	# ---------------------------------------------------------------------------
	196	LEX_PREFIX = $(if $(LEX_PREFIX_${baseprereq}),$(LEX_PREFIX_${baseprereq}),yy)
	197
	198	quiet_cmd_flex = LEX $@
	199	cmd_flex = flex -o$@ -L -P $(LEX_PREFIX) $<
	200
	201	.PRECIOUS: $(src)/%.lex.c_shipped
	202	$(src)/%.lex.c_shipped: $(src)/%.l
	203	$(call cmd,flex)
	204
	205	# YACC
	206	# ---------------------------------------------------------------------------
	207	YACC_PREFIX = $(if $(YACC_PREFIX_${baseprereq}),$(YACC_PREFIX_${baseprereq}),yy)
	208
	209	quiet_cmd_bison = YACC $@
	210	cmd_bison = bison -o$@ -t -l -p $(YACC_PREFIX) $<
	211
	212	.PRECIOUS: $(src)/%.tab.c_shipped
	213	$(src)/%.tab.c_shipped: $(src)/%.y
	214	$(call cmd,bison)
	215
	216	quiet_cmd_bison_h = YACC $@
	217	cmd_bison_h = bison -o/dev/null --defines=$@ -t -l -p $(YACC_PREFIX) $<
	218
	219	.PRECIOUS: $(src)/%.tab.h_shipped
	220	$(src)/%.tab.h_shipped: $(src)/%.y
	221	$(call cmd,bison_h)
	222
	223	endif
	224
	225	# Shipped files
	226	# ===========================================================================
	227
	228	quiet_cmd_shipped = SHIPPED $@
	229	cmd_shipped = cat $< > $@
	230
	231	$(obj)/%: $(src)/%_shipped
	232	$(call cmd,shipped)
	233
	234	# Commands useful for building a boot image
	235	# ===========================================================================
45f0ad95	236	#
22433fc5 MY	237	# Use as following:
	238	#
	239	# target: source(s) FORCE
	240	# $(if_changed,ld/objcopy/gzip)
	241	#
	242	# and add target to extra-y so that we know we have to
	243	# read in the saved command line
	244
	245	# Linking
	246	# ---------------------------------------------------------------------------
	247
	248	quiet_cmd_ld = LD $@
	249	cmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \
45f0ad95	250	$(filter-out FORCE,$^) -o $@
22433fc5 MY	251
	252	# Objcopy
	253	# ---------------------------------------------------------------------------
	254
	255	quiet_cmd_objcopy = OBJCOPY $@
	256	cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
	257
	258	# Gzip
	259	# ---------------------------------------------------------------------------
	260
	261	quiet_cmd_gzip = GZIP $@
	262	cmd_gzip = (cat $(filter-out FORCE,$^) \| gzip -n -f -9 > $@) \|\| \
	263	(rm -f $@ ; false)
	264
	265	# DTC
	266	# ---------------------------------------------------------------------------
	267
	268	# Generate an assembly file to wrap the output of the device tree compiler
	269	quiet_cmd_dt_S_dtb= DTB $@
6ab6b2af	270	# Modified for U-Boot
22433fc5 MY	271	cmd_dt_S_dtb= \
22433fc5 MY	272	( \
22433fc5	273	echo '.section .dtb.init.rodata,"a"'; \
5c30bf43	274	echo '.balign 16'; \
22433fc5 MY	275	echo '.global __dtb_$(*F)_begin'; \
	276	echo '__dtb_$(*F)_begin:'; \
	277	echo '.incbin "$<" '; \
	278	echo '__dtb_$(*F)_end:'; \
	279	echo '.global __dtb_$(*F)_end'; \
5c30bf43	280	echo '.balign 16'; \
22433fc5 MY	281	) > $@
	282
	283	$(obj)/%.dtb.S: $(obj)/%.dtb
	284	$(call cmd,dt_S_dtb)
	285
	286	quiet_cmd_dtc = DTC $@
6ab6b2af	287	# Modified for U-Boot
98bd0e0d MY	288	cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
98bd0e0d MY	289	$(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
c4aaf2e0	290	$(DTC) -O dtb -o $@ -b 0 \
22433fc5 MY	291	-i $(dir $<) $(DTC_FLAGS) \
	292	-d $(depfile).dtc.tmp $(dtc-tmp) ; \
	293	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
	294
	295	$(obj)/%.dtb: $(src)/%.dts FORCE
	296	$(call if_changed_dep,dtc)
	297
	298	dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
	299
	300	# Bzip2
	301	# ---------------------------------------------------------------------------
	302
	303	# Bzip2 and LZMA do not include size in file... so we have to fake that;
	304	# append the size as a 32-bit littleendian number as gzip does.
	305	size_append = printf $(shell \
	306	dec_size=0; \
	307	for F in $1; do \
	308	fsize=$$(stat -c "%s" $$F); \
	309	dec_size=$$(expr $$dec_size + $$fsize); \
	310	done; \
	311	printf "%08x\n" $$dec_size \| \
	312	sed 's/\(..\)/\1 /g' \| { \
	313	read ch0 ch1 ch2 ch3; \
	314	for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \
	315	printf '%s%03o' '\\' $$((0x$$ch)); \
	316	done; \
	317	} \
	318	)
	319
	320	quiet_cmd_bzip2 = BZIP2 $@
	321	cmd_bzip2 = (cat $(filter-out FORCE,$^) \| \
	322	bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ \|\| \
	323	(rm -f $@ ; false)
	324
	325	# Lzma
	326	# ---------------------------------------------------------------------------
	327
	328	quiet_cmd_lzma = LZMA $@
	329	cmd_lzma = (cat $(filter-out FORCE,$^) \| \
	330	lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ \|\| \
	331	(rm -f $@ ; false)
	332
	333	quiet_cmd_lzo = LZO $@
	334	cmd_lzo = (cat $(filter-out FORCE,$^) \| \
	335	lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ \|\| \
	336	(rm -f $@ ; false)
	337
	338	quiet_cmd_lz4 = LZ4 $@
	339	cmd_lz4 = (cat $(filter-out FORCE,$^) \| \
	340	lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ \|\| \
	341	(rm -f $@ ; false)
	342
	343	# U-Boot mkimage
	344	# ---------------------------------------------------------------------------
	345
	346	MKIMAGE := $(srctree)/scripts/mkuboot.sh
	347
	348	# SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces
	349	# the number of overrides in arch makefiles
	350	UIMAGE_ARCH ?= $(SRCARCH)
	351	UIMAGE_COMPRESSION ?= $(if $(2),$(2),none)
	352	UIMAGE_OPTS-y ?=
	353	UIMAGE_TYPE ?= kernel
	354	UIMAGE_LOADADDR ?= arch_must_set_this
355	UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR)
356	UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)'
357	UIMAGE_IN ?= $<
358	UIMAGE_OUT ?= $@
359
360	quiet_cmd_uimage = UIMAGE $(UIMAGE_OUT)
361	cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
362	-C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \
363	-T $(UIMAGE_TYPE) \
364	-a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \
365	-n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT)
366
367	# XZ
368	# ---------------------------------------------------------------------------
369	# Use xzkern to compress the kernel image and xzmisc to compress other things.
370	#
371	# xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
372	# of the kernel decompressor. A BCJ filter is used if it is available for
373	# the target architecture. xzkern also appends uncompressed size of the data
374	# using size_append. The .xz format has the size information available at
375	# the end of the file too, but it's in more complex format and it's good to
376	# avoid changing the part of the boot code that reads the uncompressed size.
377	# Note that the bytes added by size_append will make the xz tool think that
378	# the file is corrupt. This is expected.
379	#
380	# xzmisc doesn't use size_append, so it can be used to create normal .xz
381	# files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
382	# big dictionary would increase the memory usage too much in the multi-call
383	# decompression mode. A BCJ filter isn't used either.
384	quiet_cmd_xzkern = XZKERN $@
385	cmd_xzkern = (cat $(filter-out FORCE,$^) \| \
386	sh $(srctree)/scripts/xz_wrap.sh && \
387	$(call size_append, $(filter-out FORCE,$^))) > $@ \|\| \
388	(rm -f $@ ; false)
389
390	quiet_cmd_xzmisc = XZMISC $@
391	cmd_xzmisc = (cat $(filter-out FORCE,$^) \| \
392	xz --check=crc32 --lzma2=dict=1MiB) > $@ \|\| \
393	(rm -f $@ ; false)
ba8dd775 MY	394
	395	# Additional commands for U-Boot
	396	#
	397	# mkimage
	398	# ---------------------------------------------------------------------------
	399	quiet_cmd_mkimage = MKIMAGE $@
	400	cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
	401	$(if $(KBUILD_VERBOSE:1=), >/dev/null)