[J-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)

dts_dir = $(srctree)/arch/$(ARCH)/dts

# Try these files in order to find the U-Boot-specific .dtsi include file
u_boot_dtsi_options = $(wildcard $(dts_dir)/$(basename $(notdir $<))-u-boot.dtsi) \
	$(wildcard $(dts_dir)/$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi) \
	$(wildcard $(dts_dir)/$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi) \
	$(wildcard $(dts_dir)/$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi) \
	$(wildcard $(dts_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 after the '/dts-v1/;' header
cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
	cat $< $(if $(u_boot_dtsi),\
		| sed '/^\/ {$$/{x;s%$$%\#include \"$(u_boot_dtsi)\"%;G;}') | \
		$(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 SG	167	dts_dir = $(srctree)/arch/$(ARCH)/dts
	168
	169	# Try these files in order to find the U-Boot-specific .dtsi include file
	170	u_boot_dtsi_options = $(wildcard $(dts_dir)/$(basename $(notdir $<))-u-boot.dtsi) \
	171	$(wildcard $(dts_dir)/$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi) \
	172	$(wildcard $(dts_dir)/$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi) \
	173	$(wildcard $(dts_dir)/$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi) \
	174	$(wildcard $(dts_dir)/u-boot.dtsi)
	175
	176	# Uncomment for debugging
	177	# $(warning u_boot_dtsi_options: $(u_boot_dtsi_options))
	178
	179	# We use the first match
	180	u_boot_dtsi = $(firstword $(u_boot_dtsi_options))
	181
6ab6b2af	182	# Modified for U-Boot
22433fc5	183	dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \
6ab6b2af	184	-I$(srctree)/arch/$(ARCH)/dts \
5957ac2a	185	-I$(srctree)/arch/$(ARCH)/dts/include \
b116aff2 SG	186	-Iinclude \
	187	-I$(srctree)/include \
	188	-I$(srctree)/arch/$(ARCH)/include \
	189	-include $(srctree)/include/linux/kconfig.h \
	190	-D__ASSEMBLY__ \
22433fc5 MY	191	-undef -D__DTS__
	192
	193	# Finds the multi-part object the current object will be linked into
	194	modname-multi = $(sort $(foreach m,$(multi-used),\
	195	$(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))
	196
cb6e7b0d MY	197	# Useful for describing the dependency of composite objects
	198	# Usage:
	199	# $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add)
	200	define multi_depend
	201	$(foreach m, $(notdir $1), \
	202	$(eval $(obj)/$m: \
	203	$(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
	204	endef
	205
22433fc5 MY	206	ifdef REGENERATE_PARSERS
	207
	208	# GPERF
	209	# ---------------------------------------------------------------------------
	210	quiet_cmd_gperf = GPERF $@
	211	cmd_gperf = gperf -t --output-file $@ -a -C -E -g -k 1,3,$$ -p -t $<
	212
	213	.PRECIOUS: $(src)/%.hash.c_shipped
	214	$(src)/%.hash.c_shipped: $(src)/%.gperf
	215	$(call cmd,gperf)
	216
	217	# LEX
	218	# ---------------------------------------------------------------------------
	219	LEX_PREFIX = $(if $(LEX_PREFIX_${baseprereq}),$(LEX_PREFIX_${baseprereq}),yy)
	220
	221	quiet_cmd_flex = LEX $@
	222	cmd_flex = flex -o$@ -L -P $(LEX_PREFIX) $<
	223
	224	.PRECIOUS: $(src)/%.lex.c_shipped
	225	$(src)/%.lex.c_shipped: $(src)/%.l
	226	$(call cmd,flex)
	227
	228	# YACC
	229	# ---------------------------------------------------------------------------
	230	YACC_PREFIX = $(if $(YACC_PREFIX_${baseprereq}),$(YACC_PREFIX_${baseprereq}),yy)
	231
	232	quiet_cmd_bison = YACC $@
	233	cmd_bison = bison -o$@ -t -l -p $(YACC_PREFIX) $<
	234
	235	.PRECIOUS: $(src)/%.tab.c_shipped
	236	$(src)/%.tab.c_shipped: $(src)/%.y
	237	$(call cmd,bison)
	238
	239	quiet_cmd_bison_h = YACC $@
	240	cmd_bison_h = bison -o/dev/null --defines=$@ -t -l -p $(YACC_PREFIX) $<
	241
	242	.PRECIOUS: $(src)/%.tab.h_shipped
	243	$(src)/%.tab.h_shipped: $(src)/%.y
	244	$(call cmd,bison_h)
	245
	246	endif
	247
	248	# Shipped files
	249	# ===========================================================================
	250
	251	quiet_cmd_shipped = SHIPPED $@
	252	cmd_shipped = cat $< > $@
	253
	254	$(obj)/%: $(src)/%_shipped
	255	$(call cmd,shipped)
	256
	257	# Commands useful for building a boot image
	258	# ===========================================================================
45f0ad95	259	#
22433fc5 MY	260	# Use as following:
	261	#
	262	# target: source(s) FORCE
	263	# $(if_changed,ld/objcopy/gzip)
	264	#
	265	# and add target to extra-y so that we know we have to
	266	# read in the saved command line
	267
	268	# Linking
	269	# ---------------------------------------------------------------------------
	270
	271	quiet_cmd_ld = LD $@
	272	cmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \
45f0ad95	273	$(filter-out FORCE,$^) -o $@
22433fc5 MY	274
	275	# Objcopy
	276	# ---------------------------------------------------------------------------
	277
	278	quiet_cmd_objcopy = OBJCOPY $@
	279	cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
	280
	281	# Gzip
	282	# ---------------------------------------------------------------------------
	283
	284	quiet_cmd_gzip = GZIP $@
	285	cmd_gzip = (cat $(filter-out FORCE,$^) \| gzip -n -f -9 > $@) \|\| \
	286	(rm -f $@ ; false)
	287
	288	# DTC
	289	# ---------------------------------------------------------------------------
	290
	291	# Generate an assembly file to wrap the output of the device tree compiler
	292	quiet_cmd_dt_S_dtb= DTB $@
6ab6b2af	293	# Modified for U-Boot
22433fc5 MY	294	cmd_dt_S_dtb= \
22433fc5 MY	295	( \
22433fc5	296	echo '.section .dtb.init.rodata,"a"'; \
5c30bf43	297	echo '.balign 16'; \
716f9085 MR	298	echo '.global __dtb_$(subst -,_,$(*F))_begin'; \
716f9085 MR	299	echo '__dtb_$(subst -,_,$(*F))_begin:'; \
22433fc5	300	echo '.incbin "$<" '; \
716f9085 MR	301	echo '__dtb_$(subst -,_,$(*F))_end:'; \
716f9085 MR	302	echo '.global __dtb_$(subst -,_,$(*F))_end'; \
5c30bf43	303	echo '.balign 16'; \
22433fc5 MY	304	) > $@
	305
	306	$(obj)/%.dtb.S: $(obj)/%.dtb
	307	$(call cmd,dt_S_dtb)
	308
	309	quiet_cmd_dtc = DTC $@
6ab6b2af	310	# Modified for U-Boot
6d427c6b	311	# Bring in any U-Boot-specific include after the '/dts-v1/;' header
98bd0e0d	312	cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
61b994a3	313	cat $< $(if $(u_boot_dtsi),\
208db781	314	\| sed '/^\/ {$$/{x;s%$$%\#include \"$(u_boot_dtsi)\"%;G;}') \| \
6d427c6b	315	$(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) - ; \
c4aaf2e0	316	$(DTC) -O dtb -o $@ -b 0 \
22433fc5 MY	317	-i $(dir $<) $(DTC_FLAGS) \
	318	-d $(depfile).dtc.tmp $(dtc-tmp) ; \
	319	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
	320
	321	$(obj)/%.dtb: $(src)/%.dts FORCE
	322	$(call if_changed_dep,dtc)
	323
	324	dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
	325
30a1dcad SG	326	# Fonts
	327	# ---------------------------------------------------------------------------
	328
	329	# Generate an assembly file to wrap the font data
	330	quiet_cmd_S_ttf= TTF $@
	331	# Modified for U-Boot
	332	cmd_S_ttf= \
	333	( \
	334	echo '.section .rodata.ttf.init,"a"'; \
	335	echo '.balign 16'; \
	336	echo '.global __ttf_$(*F)_begin'; \
	337	echo '__ttf_$(*F)_begin:'; \
	338	echo '.incbin "$<" '; \
	339	echo '__ttf_$(*F)_end:'; \
	340	echo '.global __ttf_$(*F)_end'; \
	341	echo '.balign 16'; \
	342	) > $@
	343
	344	$(obj)/%.S: $(src)/%.ttf
	345	$(call cmd,S_ttf)
	346
c7ae3dfd SG	347	# EFI Hello World application
	348	# ---------------------------------------------------------------------------
	349
	350	# Generate an assembly file to wrap the EFI app
	351	cmd_S_efi= \
	352	( \
	353	echo '.section .rodata.efi.init,"a"'; \
	354	echo '.balign 16'; \
	355	echo '.global __efi_hello_world_begin'; \
	356	echo '__efi_hello_world_begin:'; \
	357	echo '.incbin "$<" '; \
	358	echo '__efi_hello_world_end:'; \
	359	echo '.global __efi_hello_world_end'; \
	360	echo '.balign 16'; \
	361	) > $@
	362
	363	$(obj)/%_efi.S: $(obj)/%.efi
	364	$(call cmd,S_efi)
	365
f19f1315 AD	366	quiet_cmd_efi_objcopy = OBJCOPY $@
	367	cmd_efi_objcopy = $(OBJCOPY) -j .header -j .text -j .sdata -j .data -j \
	368	.dynamic -j .dynsym -j .rel* -j .rela* -j .reloc \
c7ae3dfd SG	369	$(if $(EFI_TARGET),$(EFI_TARGET),-O binary) $^ $@
c7ae3dfd SG	370
f19f1315 AD	371	$(obj)/%.efi: $(obj)/%.so
	372	$(call cmd,efi_objcopy)
	373
	374	quiet_cmd_efi_ld = LD $@
	375	cmd_efi_ld = $(LD) -nostdlib -znocombreloc -T $(EFI_LDS_PATH) -shared \
	376	-Bsymbolic $^ -o $@
	377
c7ae3dfd SG	378	EFI_LDS_PATH = $(srctree)/arch/$(ARCH)/lib/$(EFI_LDS)
	379
	380	$(obj)/helloworld.so: $(EFI_LDS_PATH)
	381
	382	$(obj)/helloworld.so: $(obj)/helloworld.o arch/$(ARCH)/lib/$(EFI_CRT0) \
	383	arch/$(ARCH)/lib/$(EFI_RELOC)
f19f1315	384	$(call cmd,efi_ld)
c7ae3dfd	385
867bcb63 SS	386	# ACPI
867bcb63 SS	387	# ---------------------------------------------------------------------------
68af8d88	388	quiet_cmd_acpi_c_asl= ASL $<
867bcb63	389	cmd_acpi_c_asl= \
6683584c	390	$(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -P $(UBOOTINCLUDE) -o $<.tmp $<; \
bb68dd52	391	iasl -p $< -tc $<.tmp $(if $(KBUILD_VERBOSE:1=), >/dev/null); \
867bcb63 SS	392	mv $(patsubst %.asl,%.hex,$<) $@
867bcb63 SS	393
3a2a3d0b	394	$(obj)/dsdt.c: $(src)/dsdt.asl
867bcb63 SS	395	$(call cmd,acpi_c_asl)
867bcb63 SS	396
22433fc5 MY	397	# Bzip2
	398	# ---------------------------------------------------------------------------
	399
	400	# Bzip2 and LZMA do not include size in file... so we have to fake that;
	401	# append the size as a 32-bit littleendian number as gzip does.
	402	size_append = printf $(shell \
	403	dec_size=0; \
	404	for F in $1; do \
	405	fsize=$$(stat -c "%s" $$F); \
	406	dec_size=$$(expr $$dec_size + $$fsize); \
	407	done; \
	408	printf "%08x\n" $$dec_size \| \
	409	sed 's/\(..\)/\1 /g' \| { \
	410	read ch0 ch1 ch2 ch3; \
	411	for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \
	412	printf '%s%03o' '\\' $$((0x$$ch)); \
	413	done; \
	414	} \
	415	)
	416
	417	quiet_cmd_bzip2 = BZIP2 $@
	418	cmd_bzip2 = (cat $(filter-out FORCE,$^) \| \
	419	bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ \|\| \
	420	(rm -f $@ ; false)
	421
	422	# Lzma
	423	# ---------------------------------------------------------------------------
	424
	425	quiet_cmd_lzma = LZMA $@
	426	cmd_lzma = (cat $(filter-out FORCE,$^) \| \
	427	lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ \|\| \
	428	(rm -f $@ ; false)
	429
	430	quiet_cmd_lzo = LZO $@
	431	cmd_lzo = (cat $(filter-out FORCE,$^) \| \
	432	lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ \|\| \
	433	(rm -f $@ ; false)
	434
	435	quiet_cmd_lz4 = LZ4 $@
	436	cmd_lz4 = (cat $(filter-out FORCE,$^) \| \
	437	lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ \|\| \
	438	(rm -f $@ ; false)
	439
	440	# U-Boot mkimage
	441	# ---------------------------------------------------------------------------
	442
	443	MKIMAGE := $(srctree)/scripts/mkuboot.sh
	444
	445	# SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces
	446	# the number of overrides in arch makefiles
	447	UIMAGE_ARCH ?= $(SRCARCH)
	448	UIMAGE_COMPRESSION ?= $(if $(2),$(2),none)
	449	UIMAGE_OPTS-y ?=
	450	UIMAGE_TYPE ?= kernel
	451	UIMAGE_LOADADDR ?= arch_must_set_this
	452	UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR)
	453	UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)'
	454	UIMAGE_IN ?= $<
	455	UIMAGE_OUT ?= $@
	456
	457	quiet_cmd_uimage = UIMAGE $(UIMAGE_OUT)
	458	cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
	459	-C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \
	460	-T $(UIMAGE_TYPE) \
461	-a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \
462	-n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT)
463
464	# XZ
465	# ---------------------------------------------------------------------------
466	# Use xzkern to compress the kernel image and xzmisc to compress other things.
467	#
468	# xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
469	# of the kernel decompressor. A BCJ filter is used if it is available for
470	# the target architecture. xzkern also appends uncompressed size of the data
471	# using size_append. The .xz format has the size information available at
472	# the end of the file too, but it's in more complex format and it's good to
473	# avoid changing the part of the boot code that reads the uncompressed size.
474	# Note that the bytes added by size_append will make the xz tool think that
475	# the file is corrupt. This is expected.
476	#
477	# xzmisc doesn't use size_append, so it can be used to create normal .xz
478	# files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
479	# big dictionary would increase the memory usage too much in the multi-call
480	# decompression mode. A BCJ filter isn't used either.
481	quiet_cmd_xzkern = XZKERN $@
482	cmd_xzkern = (cat $(filter-out FORCE,$^) \| \
483	sh $(srctree)/scripts/xz_wrap.sh && \
484	$(call size_append, $(filter-out FORCE,$^))) > $@ \|\| \
485	(rm -f $@ ; false)
486
487	quiet_cmd_xzmisc = XZMISC $@
488	cmd_xzmisc = (cat $(filter-out FORCE,$^) \| \
489	xz --check=crc32 --lzma2=dict=1MiB) > $@ \|\| \
490	(rm -f $@ ; false)
ba8dd775 MY	491
	492	# Additional commands for U-Boot
	493	#
	494	# mkimage
	495	# ---------------------------------------------------------------------------
1f6a6648	496	MKIMAGEOUTPUT ?= /dev/null
ba8dd775 MY	497	quiet_cmd_mkimage = MKIMAGE $@
ba8dd775 MY	498	cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
1f6a6648	499	$(if $(KBUILD_VERBOSE:1=), >$(MKIMAGEOUTPUT))