[people/ms/u-boot.git] / scripts / Makefile.lib

#
# SPDX-License-Identifier:	GPL-2.0
#
# 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)

# Try these files in order to find the U-Boot-specific .dtsi include file
u_boot_dtsi_options = $(wildcard $(dir $<)$(basename $(notdir $<))-u-boot.dtsi) \
	$(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi) \
	$(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi) \
	$(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi) \
	$(wildcard $(dir $<)u-boot.dtsi)

# Uncomment for debugging
# $(warning u_boot_dtsi_options: $(u_boot_dtsi_options))

# We use the first match
u_boot_dtsi = $(firstword $(u_boot_dtsi_options))

# Modified for U-Boot
dtc_cpp_flags  = -Wp,-MD,$(depfile).pre.tmp -nostdinc                    \
		 -I$(srctree)/arch/$(ARCH)/dts                           \
		 -I$(srctree)/arch/$(ARCH)/dts/include                   \
		 -Iinclude                                               \
		 -I$(srctree)/include                                    \
		 -I$(srctree)/arch/$(ARCH)/include                       \
		 -include $(srctree)/include/linux/kconfig.h             \
		 -D__ASSEMBLY__                                          \
		 -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     $@
# Modified for U-Boot
cmd_dt_S_dtb=						\
(							\
	echo '.section .dtb.init.rodata,"a"';		\
	echo '.balign 16';				\
	echo '.global __dtb_$(subst -,_,$(*F))_begin';	\
	echo '__dtb_$(subst -,_,$(*F))_begin:';		\
	echo '.incbin "$<" ';				\
	echo '__dtb_$(subst -,_,$(*F))_end:';		\
	echo '.global __dtb_$(subst -,_,$(*F))_end';	\
	echo '.balign 16';				\
) > $@

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

quiet_cmd_dtc = DTC     $@
# Modified for U-Boot
# Bring in any U-Boot-specific include at the end of the file
cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
	cat $< $(if $(u_boot_dtsi),\
		| sed "$$ a\#include \"$(u_boot_dtsi)\"") | \
		$(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)

# Fonts
# ---------------------------------------------------------------------------

# Generate an assembly file to wrap the font data
quiet_cmd_S_ttf= TTF     $@
# Modified for U-Boot
cmd_S_ttf=						\
(							\
	echo '.section .rodata.ttf.init,"a"';		\
	echo '.balign 16';				\
	echo '.global __ttf_$(*F)_begin';		\
	echo '__ttf_$(*F)_begin:';			\
	echo '.incbin "$<" ';				\
	echo '__ttf_$(*F)_end:';			\
	echo '.global __ttf_$(*F)_end';			\
	echo '.balign 16';				\
) > $@

$(obj)/%.S: $(src)/%.ttf
	$(call cmd,S_ttf)

# EFI Hello World application
# ---------------------------------------------------------------------------

# Generate an assembly file to wrap the EFI app
cmd_S_efi=						\
(							\
	echo '.section .rodata.efi.init,"a"';		\
	echo '.balign 16';				\
	echo '.global __efi_hello_world_begin';		\
	echo '__efi_hello_world_begin:';		\
	echo '.incbin "$<" ';				\
	echo '__efi_hello_world_end:';			\
	echo '.global __efi_hello_world_end';		\
	echo '.balign 16';				\
) > $@

$(obj)/%_efi.S: $(obj)/%.efi
	$(call cmd,S_efi)

quiet_cmd_efi_objcopy = OBJCOPY $@
cmd_efi_objcopy = $(OBJCOPY) -j .header -j .text -j .sdata -j .data -j \
		.dynamic -j .dynsym  -j .rel* -j .rela* -j .reloc \
		$(if $(EFI_TARGET),$(EFI_TARGET),-O binary) $^ $@

$(obj)/%.efi: $(obj)/%.so
	$(call cmd,efi_objcopy)

quiet_cmd_efi_ld = LD      $@
cmd_efi_ld = $(LD) -nostdlib -znocombreloc -T $(EFI_LDS_PATH) -shared \
		-Bsymbolic $^ -o $@

EFI_LDS_PATH = $(srctree)/arch/$(ARCH)/lib/$(EFI_LDS)

$(obj)/helloworld.so: $(EFI_LDS_PATH)

$(obj)/helloworld.so: $(obj)/helloworld.o arch/$(ARCH)/lib/$(EFI_CRT0) \
		arch/$(ARCH)/lib/$(EFI_RELOC)
	$(call cmd,efi_ld)

# ACPI
# ---------------------------------------------------------------------------
quiet_cmd_acpi_c_asl= ASL     $<
cmd_acpi_c_asl=         \
	$(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -P $(UBOOTINCLUDE) -o $<.tmp $<; \
	iasl -p $< -tc $<.tmp $(if $(KBUILD_VERBOSE:1=), >/dev/null) && \
	mv $(patsubst %.asl,%.hex,$<) $@

$(obj)/dsdt.c:    $(src)/dsdt.asl
	$(call cmd,acpi_c_asl)

# 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
# ---------------------------------------------------------------------------
MKIMAGEOUTPUT ?= /dev/null
quiet_cmd_mkimage = MKIMAGE $@
cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
	$(if $(KBUILD_VERBOSE:1=), >$(MKIMAGEOUTPUT))
Commit	Line	Data
f32c8649 TR	1	#
	2	# SPDX-License-Identifier: GPL-2.0
	3	#
22433fc5 MY	4	# Backward compatibility
	5	asflags-y += $(EXTRA_AFLAGS)
	6	ccflags-y += $(EXTRA_CFLAGS)
	7	cppflags-y += $(EXTRA_CPPFLAGS)
	8	ldflags-y += $(EXTRA_LDFLAGS)
	9
	10	#
	11	# flags that take effect in sub directories
	12	export KBUILD_SUBDIR_ASFLAGS := $(KBUILD_SUBDIR_ASFLAGS) $(subdir-asflags-y)
	13	export KBUILD_SUBDIR_CCFLAGS := $(KBUILD_SUBDIR_CCFLAGS) $(subdir-ccflags-y)
	14
	15	# Figure out what we need to build from the various variables
	16	# ===========================================================================
	17
	18	# When an object is listed to be built compiled-in and modular,
	19	# only build the compiled-in version
	20
	21	obj-m := $(filter-out $(obj-y),$(obj-m))
	22
	23	# Libraries are always collected in one lib file.
	24	# Filter out objects already built-in
	25
	26	lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
	27
	28
	29	# Handle objects in subdirs
	30	# ---------------------------------------------------------------------------
	31	# o if we encounter foo/ in $(obj-y), replace it by foo/built-in.o
	32	# and add the directory to the list of dirs to descend into: $(subdir-y)
45f0ad95	33	# o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
22433fc5 MY	34	# and add the directory to the list of dirs to descend into: $(subdir-m)
	35
	36	# Determine modorder.
	37	# Unfortunately, we don't have information about ordering between -y
	38	# and -m subdirs. Just put -y's first.
	39	modorder := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))
	40
	41	__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
	42	subdir-y += $(__subdir-y)
	43	__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
	44	subdir-m += $(__subdir-m)
	45	obj-y := $(patsubst %/, %/built-in.o, $(obj-y))
	46	obj-m := $(filter-out %/, $(obj-m))
	47
	48	# Subdirectories we need to descend into
	49
	50	subdir-ym := $(sort $(subdir-y) $(subdir-m))
	51
45f0ad95	52	# if $(foo-objs) exists, foo.o is a composite object
22433fc5 MY	53	multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
	54	multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
	55	multi-used := $(multi-used-y) $(multi-used-m)
	56	single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m)))
	57
	58	# Build list of the parts of our composite objects, our composite
	59	# objects depend on those (obviously)
	60	multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y)))
	61	multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)))
	62	multi-objs := $(multi-objs-y) $(multi-objs-m)
	63
	64	# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
	65	# tell kbuild to descend
	66	subdir-obj-y := $(filter %/built-in.o, $(obj-y))
	67
	68	# $(obj-dirs) is a list of directories that contain object files
	69	obj-dirs := $(dir $(multi-objs) $(obj-y))
	70
	71	# Replace multi-part objects by their individual parts, look at local dir only
	72	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)
	73	real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
	74
	75	# Add subdir path
	76
	77	extra-y := $(addprefix $(obj)/,$(extra-y))
	78	always := $(addprefix $(obj)/,$(always))
	79	targets := $(addprefix $(obj)/,$(targets))
	80	modorder := $(addprefix $(obj)/,$(modorder))
	81	obj-y := $(addprefix $(obj)/,$(obj-y))
	82	obj-m := $(addprefix $(obj)/,$(obj-m))
	83	lib-y := $(addprefix $(obj)/,$(lib-y))
	84	subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y))
	85	real-objs-y := $(addprefix $(obj)/,$(real-objs-y))
	86	real-objs-m := $(addprefix $(obj)/,$(real-objs-m))
	87	single-used-m := $(addprefix $(obj)/,$(single-used-m))
	88	multi-used-y := $(addprefix $(obj)/,$(multi-used-y))
	89	multi-used-m := $(addprefix $(obj)/,$(multi-used-m))
	90	multi-objs-y := $(addprefix $(obj)/,$(multi-objs-y))
	91	multi-objs-m := $(addprefix $(obj)/,$(multi-objs-m))
	92	subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
	93	obj-dirs := $(addprefix $(obj)/,$(obj-dirs))
	94
	95	# These flags are needed for modversions and compiling, so we define them here
	96	# already
45f0ad95	97	# $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will
22433fc5 MY	98	# end up in (or would, if it gets compiled in)
	99	# Note: Files that end up in two or more modules are compiled without the
	100	# KBUILD_MODNAME definition. The reason is that any made-up name would
	101	# differ in different configs.
	102	name-fix = $(subst $(comma),_,$(subst -,_,$1))
	103	basename_flags = -D"KBUILD_BASENAME=KBUILD_STR($(call name-fix,$(basetarget)))"
	104	modname_flags = $(if $(filter 1,$(words $(modname))),\
	105	-D"KBUILD_MODNAME=KBUILD_STR($(call name-fix,$(modname)))")
	106
026f9cf2	107	orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \
22433fc5 MY	108	$(ccflags-y) $(CFLAGS_$(basetarget).o)
22433fc5 MY	109	_c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
3834f417	110	orig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \
22433fc5	111	$(asflags-y) $(AFLAGS_$(basetarget).o)
3834f417	112	_a_flags = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags))
026f9cf2	113	_cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
22433fc5 MY	114
	115	#
	116	# Enable gcov profiling flags for a file, directory or for all files depending
	117	# on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL
	118	# (in this order)
	119	#
	120	ifeq ($(CONFIG_GCOV_KERNEL),y)
	121	_c_flags += $(if $(patsubst n%,, \
	122	$(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \
	123	$(CFLAGS_GCOV))
	124	endif
	125
98bd0e0d MY	126	#
	127	# Enable address sanitizer flags for kernel except some files or directories
	128	# we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE)
	129	#
	130	ifeq ($(CONFIG_KASAN),y)
	131	_c_flags += $(if $(patsubst n%,, \
	132	$(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \
	133	$(CFLAGS_KASAN))
	134	endif
	135
22433fc5 MY	136	# If building the kernel in a separate objtree expand all occurrences
	137	# of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
	138
	139	ifeq ($(KBUILD_SRC),)
	140	__c_flags = $(_c_flags)
	141	__a_flags = $(_a_flags)
	142	__cpp_flags = $(_cpp_flags)
	143	else
	144
	145	# -I$(obj) locates generated .h files
	146	# $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files
	147	# and locates generated .h files
	148	# FIXME: Replace both with specific CFLAGS* statements in the makefiles
	149	__c_flags = $(call addtree,-I$(obj)) $(call flags,_c_flags)
	150	__a_flags = $(call flags,_a_flags)
	151	__cpp_flags = $(call flags,_cpp_flags)
	152	endif
	153
6825a95b MY	154	# Modified for U-Boot: LINUXINCLUDE -> UBOOTINCLUDE
6825a95b MY	155	c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \
22433fc5 MY	156	$(__c_flags) $(modkern_cflags) \
	157	-D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags)
	158
6825a95b	159	a_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \
22433fc5 MY	160	$(__a_flags) $(modkern_aflags)
22433fc5 MY	161
6825a95b	162	cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \
22433fc5 MY	163	$(__cpp_flags)
	164
	165	ld_flags = $(LDFLAGS) $(ldflags-y)
	166
6d427c6b	167	# Try these files in order to find the U-Boot-specific .dtsi include file
0f7faf03 TR	168	u_boot_dtsi_options = $(wildcard $(dir $<)$(basename $(notdir $<))-u-boot.dtsi) \
	169	$(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi) \
	170	$(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi) \
	171	$(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi) \
	172	$(wildcard $(dir $<)u-boot.dtsi)
6d427c6b SG	173
	174	# Uncomment for debugging
	175	# $(warning u_boot_dtsi_options: $(u_boot_dtsi_options))
	176
	177	# We use the first match
	178	u_boot_dtsi = $(firstword $(u_boot_dtsi_options))
	179
6ab6b2af	180	# Modified for U-Boot
22433fc5	181	dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \
6ab6b2af	182	-I$(srctree)/arch/$(ARCH)/dts \
5957ac2a	183	-I$(srctree)/arch/$(ARCH)/dts/include \
b116aff2 SG	184	-Iinclude \
	185	-I$(srctree)/include \
	186	-I$(srctree)/arch/$(ARCH)/include \
	187	-include $(srctree)/include/linux/kconfig.h \
	188	-D__ASSEMBLY__ \
22433fc5 MY	189	-undef -D__DTS__
	190
	191	# Finds the multi-part object the current object will be linked into
	192	modname-multi = $(sort $(foreach m,$(multi-used),\
	193	$(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))
	194
cb6e7b0d MY	195	# Useful for describing the dependency of composite objects
	196	# Usage:
	197	# $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add)
	198	define multi_depend
	199	$(foreach m, $(notdir $1), \
	200	$(eval $(obj)/$m: \
	201	$(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
	202	endef
	203
22433fc5 MY	204	ifdef REGENERATE_PARSERS
	205
	206	# GPERF
	207	# ---------------------------------------------------------------------------
	208	quiet_cmd_gperf = GPERF $@
	209	cmd_gperf = gperf -t --output-file $@ -a -C -E -g -k 1,3,$$ -p -t $<
	210
	211	.PRECIOUS: $(src)/%.hash.c_shipped
	212	$(src)/%.hash.c_shipped: $(src)/%.gperf
	213	$(call cmd,gperf)
	214
	215	# LEX
	216	# ---------------------------------------------------------------------------
	217	LEX_PREFIX = $(if $(LEX_PREFIX_${baseprereq}),$(LEX_PREFIX_${baseprereq}),yy)
	218
	219	quiet_cmd_flex = LEX $@
	220	cmd_flex = flex -o$@ -L -P $(LEX_PREFIX) $<
	221
	222	.PRECIOUS: $(src)/%.lex.c_shipped
	223	$(src)/%.lex.c_shipped: $(src)/%.l
	224	$(call cmd,flex)
	225
	226	# YACC
	227	# ---------------------------------------------------------------------------
	228	YACC_PREFIX = $(if $(YACC_PREFIX_${baseprereq}),$(YACC_PREFIX_${baseprereq}),yy)
	229
	230	quiet_cmd_bison = YACC $@
	231	cmd_bison = bison -o$@ -t -l -p $(YACC_PREFIX) $<
	232
	233	.PRECIOUS: $(src)/%.tab.c_shipped
	234	$(src)/%.tab.c_shipped: $(src)/%.y
	235	$(call cmd,bison)
	236
	237	quiet_cmd_bison_h = YACC $@
	238	cmd_bison_h = bison -o/dev/null --defines=$@ -t -l -p $(YACC_PREFIX) $<
	239
	240	.PRECIOUS: $(src)/%.tab.h_shipped
	241	$(src)/%.tab.h_shipped: $(src)/%.y
	242	$(call cmd,bison_h)
	243
	244	endif
	245
	246	# Shipped files
	247	# ===========================================================================
	248
	249	quiet_cmd_shipped = SHIPPED $@
	250	cmd_shipped = cat $< > $@
	251
	252	$(obj)/%: $(src)/%_shipped
	253	$(call cmd,shipped)
	254
	255	# Commands useful for building a boot image
	256	# ===========================================================================
45f0ad95	257	#
22433fc5 MY	258	# Use as following:
	259	#
	260	# target: source(s) FORCE
	261	# $(if_changed,ld/objcopy/gzip)
	262	#
	263	# and add target to extra-y so that we know we have to
	264	# read in the saved command line
	265
	266	# Linking
	267	# ---------------------------------------------------------------------------
	268
	269	quiet_cmd_ld = LD $@
	270	cmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \
45f0ad95	271	$(filter-out FORCE,$^) -o $@
22433fc5 MY	272
	273	# Objcopy
	274	# ---------------------------------------------------------------------------
	275
	276	quiet_cmd_objcopy = OBJCOPY $@
	277	cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
	278
	279	# Gzip
	280	# ---------------------------------------------------------------------------
	281
	282	quiet_cmd_gzip = GZIP $@
	283	cmd_gzip = (cat $(filter-out FORCE,$^) \| gzip -n -f -9 > $@) \|\| \
	284	(rm -f $@ ; false)
	285
	286	# DTC
	287	# ---------------------------------------------------------------------------
	288
	289	# Generate an assembly file to wrap the output of the device tree compiler
	290	quiet_cmd_dt_S_dtb= DTB $@
6ab6b2af	291	# Modified for U-Boot
22433fc5 MY	292	cmd_dt_S_dtb= \
22433fc5 MY	293	( \
22433fc5	294	echo '.section .dtb.init.rodata,"a"'; \
5c30bf43	295	echo '.balign 16'; \
716f9085 MR	296	echo '.global __dtb_$(subst -,_,$(*F))_begin'; \
716f9085 MR	297	echo '__dtb_$(subst -,_,$(*F))_begin:'; \
22433fc5	298	echo '.incbin "$<" '; \
716f9085 MR	299	echo '__dtb_$(subst -,_,$(*F))_end:'; \
716f9085 MR	300	echo '.global __dtb_$(subst -,_,$(*F))_end'; \
5c30bf43	301	echo '.balign 16'; \
22433fc5 MY	302	) > $@
	303
	304	$(obj)/%.dtb.S: $(obj)/%.dtb
	305	$(call cmd,dt_S_dtb)
	306
	307	quiet_cmd_dtc = DTC $@
6ab6b2af	308	# Modified for U-Boot
7452946e	309	# Bring in any U-Boot-specific include at the end of the file
98bd0e0d	310	cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
61b994a3	311	cat $< $(if $(u_boot_dtsi),\
7452946e	312	\| sed "$$ a\#include \"$(u_boot_dtsi)\"") \| \
6d427c6b	313	$(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) - ; \
c4aaf2e0	314	$(DTC) -O dtb -o $@ -b 0 \
22433fc5 MY	315	-i $(dir $<) $(DTC_FLAGS) \
	316	-d $(depfile).dtc.tmp $(dtc-tmp) ; \
	317	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
	318
	319	$(obj)/%.dtb: $(src)/%.dts FORCE
	320	$(call if_changed_dep,dtc)
	321
	322	dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
	323
30a1dcad SG	324	# Fonts
	325	# ---------------------------------------------------------------------------
	326
	327	# Generate an assembly file to wrap the font data
	328	quiet_cmd_S_ttf= TTF $@
	329	# Modified for U-Boot
	330	cmd_S_ttf= \
	331	( \
	332	echo '.section .rodata.ttf.init,"a"'; \
	333	echo '.balign 16'; \
	334	echo '.global __ttf_$(*F)_begin'; \
	335	echo '__ttf_$(*F)_begin:'; \
	336	echo '.incbin "$<" '; \
	337	echo '__ttf_$(*F)_end:'; \
	338	echo '.global __ttf_$(*F)_end'; \
	339	echo '.balign 16'; \
	340	) > $@
	341
	342	$(obj)/%.S: $(src)/%.ttf
	343	$(call cmd,S_ttf)
	344
c7ae3dfd SG	345	# EFI Hello World application
	346	# ---------------------------------------------------------------------------
	347
	348	# Generate an assembly file to wrap the EFI app
	349	cmd_S_efi= \
	350	( \
	351	echo '.section .rodata.efi.init,"a"'; \
	352	echo '.balign 16'; \
	353	echo '.global __efi_hello_world_begin'; \
	354	echo '__efi_hello_world_begin:'; \
	355	echo '.incbin "$<" '; \
	356	echo '__efi_hello_world_end:'; \
	357	echo '.global __efi_hello_world_end'; \
	358	echo '.balign 16'; \
	359	) > $@
	360
	361	$(obj)/%_efi.S: $(obj)/%.efi
	362	$(call cmd,S_efi)
	363
f19f1315 AD	364	quiet_cmd_efi_objcopy = OBJCOPY $@
	365	cmd_efi_objcopy = $(OBJCOPY) -j .header -j .text -j .sdata -j .data -j \
	366	.dynamic -j .dynsym -j .rel* -j .rela* -j .reloc \
c7ae3dfd SG	367	$(if $(EFI_TARGET),$(EFI_TARGET),-O binary) $^ $@
c7ae3dfd SG	368
f19f1315 AD	369	$(obj)/%.efi: $(obj)/%.so
	370	$(call cmd,efi_objcopy)
	371
	372	quiet_cmd_efi_ld = LD $@
	373	cmd_efi_ld = $(LD) -nostdlib -znocombreloc -T $(EFI_LDS_PATH) -shared \
	374	-Bsymbolic $^ -o $@
	375
c7ae3dfd SG	376	EFI_LDS_PATH = $(srctree)/arch/$(ARCH)/lib/$(EFI_LDS)
	377
	378	$(obj)/helloworld.so: $(EFI_LDS_PATH)
	379
	380	$(obj)/helloworld.so: $(obj)/helloworld.o arch/$(ARCH)/lib/$(EFI_CRT0) \
	381	arch/$(ARCH)/lib/$(EFI_RELOC)
f19f1315	382	$(call cmd,efi_ld)
c7ae3dfd	383
867bcb63 SS	384	# ACPI
867bcb63 SS	385	# ---------------------------------------------------------------------------
68af8d88	386	quiet_cmd_acpi_c_asl= ASL $<
867bcb63	387	cmd_acpi_c_asl= \
6683584c	388	$(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -P $(UBOOTINCLUDE) -o $<.tmp $<; \
06054b1a	389	iasl -p $< -tc $<.tmp $(if $(KBUILD_VERBOSE:1=), >/dev/null) && \
867bcb63 SS	390	mv $(patsubst %.asl,%.hex,$<) $@
867bcb63 SS	391
3a2a3d0b	392	$(obj)/dsdt.c: $(src)/dsdt.asl
867bcb63 SS	393	$(call cmd,acpi_c_asl)
867bcb63 SS	394
22433fc5 MY	395	# Bzip2
	396	# ---------------------------------------------------------------------------
	397
	398	# Bzip2 and LZMA do not include size in file... so we have to fake that;
	399	# append the size as a 32-bit littleendian number as gzip does.
	400	size_append = printf $(shell \
	401	dec_size=0; \
	402	for F in $1; do \
	403	fsize=$$(stat -c "%s" $$F); \
	404	dec_size=$$(expr $$dec_size + $$fsize); \
	405	done; \
	406	printf "%08x\n" $$dec_size \| \
	407	sed 's/\(..\)/\1 /g' \| { \
	408	read ch0 ch1 ch2 ch3; \
	409	for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \
	410	printf '%s%03o' '\\' $$((0x$$ch)); \
	411	done; \
	412	} \
	413	)
	414
	415	quiet_cmd_bzip2 = BZIP2 $@
	416	cmd_bzip2 = (cat $(filter-out FORCE,$^) \| \
	417	bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ \|\| \
	418	(rm -f $@ ; false)
	419
	420	# Lzma
	421	# ---------------------------------------------------------------------------
	422
	423	quiet_cmd_lzma = LZMA $@
	424	cmd_lzma = (cat $(filter-out FORCE,$^) \| \
	425	lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ \|\| \
	426	(rm -f $@ ; false)
	427
	428	quiet_cmd_lzo = LZO $@
	429	cmd_lzo = (cat $(filter-out FORCE,$^) \| \
	430	lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ \|\| \
	431	(rm -f $@ ; false)
	432
	433	quiet_cmd_lz4 = LZ4 $@
	434	cmd_lz4 = (cat $(filter-out FORCE,$^) \| \
	435	lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ \|\| \
	436	(rm -f $@ ; false)
	437
	438	# U-Boot mkimage
	439	# ---------------------------------------------------------------------------
	440
	441	MKIMAGE := $(srctree)/scripts/mkuboot.sh
	442
	443	# SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces
	444	# the number of overrides in arch makefiles
	445	UIMAGE_ARCH ?= $(SRCARCH)
	446	UIMAGE_COMPRESSION ?= $(if $(2),$(2),none)
	447	UIMAGE_OPTS-y ?=
	448	UIMAGE_TYPE ?= kernel
	449	UIMAGE_LOADADDR ?= arch_must_set_this
	450	UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR)
	451	UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)'
	452	UIMAGE_IN ?= $<
	453	UIMAGE_OUT ?= $@
	454
	455	quiet_cmd_uimage = UIMAGE $(UIMAGE_OUT)
	456	cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
	457	-C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \
	458	-T $(UIMAGE_TYPE) \
459	-a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \
460	-n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT)
461
462	# XZ
463	# ---------------------------------------------------------------------------
464	# Use xzkern to compress the kernel image and xzmisc to compress other things.
465	#
466	# xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
467	# of the kernel decompressor. A BCJ filter is used if it is available for
468	# the target architecture. xzkern also appends uncompressed size of the data
469	# using size_append. The .xz format has the size information available at
470	# the end of the file too, but it's in more complex format and it's good to
471	# avoid changing the part of the boot code that reads the uncompressed size.
472	# Note that the bytes added by size_append will make the xz tool think that
473	# the file is corrupt. This is expected.
474	#
475	# xzmisc doesn't use size_append, so it can be used to create normal .xz
476	# files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
477	# big dictionary would increase the memory usage too much in the multi-call
478	# decompression mode. A BCJ filter isn't used either.
479	quiet_cmd_xzkern = XZKERN $@
480	cmd_xzkern = (cat $(filter-out FORCE,$^) \| \
481	sh $(srctree)/scripts/xz_wrap.sh && \
482	$(call size_append, $(filter-out FORCE,$^))) > $@ \|\| \
483	(rm -f $@ ; false)
484
485	quiet_cmd_xzmisc = XZMISC $@
486	cmd_xzmisc = (cat $(filter-out FORCE,$^) \| \
487	xz --check=crc32 --lzma2=dict=1MiB) > $@ \|\| \
488	(rm -f $@ ; false)
ba8dd775 MY	489
	490	# Additional commands for U-Boot
	491	#
	492	# mkimage
	493	# ---------------------------------------------------------------------------
1f6a6648	494	MKIMAGEOUTPUT ?= /dev/null
ba8dd775 MY	495	quiet_cmd_mkimage = MKIMAGE $@
ba8dd775 MY	496	cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
1f6a6648	497	$(if $(KBUILD_VERBOSE:1=), >$(MKIMAGEOUTPUT))