scripts/Makefile.lib

   1 #
   2 # SPDX-License-Identifier:      GPL-2.0
   3 #
   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)
  33 # o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
  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
  52 # if $(foo-objs) exists, foo.o is a composite object
  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
  97 # $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will
  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
 107 orig_c_flags   = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \
 108                  $(ccflags-y) $(CFLAGS_$(basetarget).o)
 109 _c_flags       = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
 110 orig_a_flags   = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \
 111                  $(asflags-y) $(AFLAGS_$(basetarget).o)
 112 _a_flags       = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags))
 113 _cpp_flags     = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
 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                 $(CFLAGS_GCOV))
 124 endif
 125
 126 #
 127 # Enable address sanitizer flags for kernel except some files or directories
 128 # we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE)
 129 #
 130 ifeq ($(CONFIG_KASAN),y)
 131 _c_flags += $(if $(patsubst n%,, \
 132                 $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \
 133                 $(CFLAGS_KASAN))
 134 endif
 135
 136 # If building the kernel in a separate objtree expand all occurrences
 137 # of -Idir to -I$(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     =                          $(call flags,_cpp_flags)
 152 endif
 153
 154 # Modified for U-Boot: LINUXINCLUDE -> UBOOTINCLUDE
 155 c_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
 156                  $(__c_flags) $(modkern_cflags)                           \
 157                  -D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags)
 158
 159 a_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
 160                  $(__a_flags) $(modkern_aflags)
 161
 162 cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
 163                  $(__cpp_flags)
 164
 165 ld_flags       = $(LDFLAGS) $(ldflags-y)
 166
 167 # Try these files in order to find the U-Boot-specific .dtsi include file
 168 u_boot_dtsi_options = $(strip $(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))
 173
 174 u_boot_dtsi_options_raw = $(warning Automatic .dtsi inclusion: options: \
 175         $(dir $<)$(basename $(notdir $<))-u-boot.dtsi \
 176         $(dir $<)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi \
 177         $(dir $<)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi \
 178         $(dir $<)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi \
 179         $(dir $<)u-boot.dtsi ... \
 180         found: $(if $(u_boot_dtsi_options),"$(u_boot_dtsi_options)",nothing!))
 181
 182 # Uncomment for debugging
 183 # This shows all the files that were considered and the one that we chose.
 184 # u_boot_dtsi_options_debug = $(u_boot_dtsi_options_raw)
 185
 186 # We use the first match
 187 u_boot_dtsi = $(strip $(u_boot_dtsi_options_debug) \
 188         $(notdir $(firstword $(u_boot_dtsi_options))))
 189
 190 # Modified for U-Boot
 191 dtc_cpp_flags  = -Wp,-MD,$(depfile).pre.tmp -nostdinc                    \
 192                  -I$(srctree)/arch/$(ARCH)/dts                           \
 193                  -I$(srctree)/arch/$(ARCH)/dts/include                   \
 194                  -Iinclude                                               \
 195                  -I$(srctree)/include                                    \
 196                  -I$(srctree)/arch/$(ARCH)/include                       \
 197                  -include $(srctree)/include/linux/kconfig.h             \
 198                  -D__ASSEMBLY__                                          \
 199                  -undef -D__DTS__
 200
 201 # Finds the multi-part object the current object will be linked into
 202 modname-multi = $(sort $(foreach m,$(multi-used),\
 203                 $(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))
 204
 205 # Useful for describing the dependency of composite objects
 206 # Usage:
 207 #   $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add)
 208 define multi_depend
 209 $(foreach m, $(notdir $1), \
 210         $(eval $(obj)/$m: \
 211         $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
 212 endef
 213
 214 ifdef REGENERATE_PARSERS
 215
 216 # GPERF
 217 # ---------------------------------------------------------------------------
 218 quiet_cmd_gperf = GPERF $@
 219       cmd_gperf = gperf -t --output-file $@ -a -C -E -g -k 1,3,$$ -p -t $<
 220
 221 .PRECIOUS: $(src)/%.hash.c_shipped
 222 $(src)/%.hash.c_shipped: $(src)/%.gperf
 223         $(call cmd,gperf)
 224
 225 # LEX
 226 # ---------------------------------------------------------------------------
 227 LEX_PREFIX = $(if $(LEX_PREFIX_${baseprereq}),$(LEX_PREFIX_${baseprereq}),yy)
 228
 229 quiet_cmd_flex = LEX     $@
 230       cmd_flex = flex -o$@ -L -P $(LEX_PREFIX) $<
 231
 232 .PRECIOUS: $(src)/%.lex.c_shipped
 233 $(src)/%.lex.c_shipped: $(src)/%.l
 234         $(call cmd,flex)
 235
 236 # YACC
 237 # ---------------------------------------------------------------------------
 238 YACC_PREFIX = $(if $(YACC_PREFIX_${baseprereq}),$(YACC_PREFIX_${baseprereq}),yy)
 239
 240 quiet_cmd_bison = YACC    $@
 241       cmd_bison = bison -o$@ -t -l -p $(YACC_PREFIX) $<
 242
 243 .PRECIOUS: $(src)/%.tab.c_shipped
 244 $(src)/%.tab.c_shipped: $(src)/%.y
 245         $(call cmd,bison)
 246
 247 quiet_cmd_bison_h = YACC    $@
 248       cmd_bison_h = bison -o/dev/null --defines=$@ -t -l -p $(YACC_PREFIX) $<
 249
 250 .PRECIOUS: $(src)/%.tab.h_shipped
 251 $(src)/%.tab.h_shipped: $(src)/%.y
 252         $(call cmd,bison_h)
 253
 254 endif
 255
 256 # Shipped files
 257 # ===========================================================================
 258
 259 quiet_cmd_shipped = SHIPPED $@
 260 cmd_shipped = cat $< > $@
 261
 262 $(obj)/%: $(src)/%_shipped
 263         $(call cmd,shipped)
 264
 265 # Commands useful for building a boot image
 266 # ===========================================================================
 267 #
 268 #       Use as following:
 269 #
 270 #       target: source(s) FORCE
 271 #               $(if_changed,ld/objcopy/gzip)
 272 #
 273 #       and add target to extra-y so that we know we have to
 274 #       read in the saved command line
 275
 276 # Linking
 277 # ---------------------------------------------------------------------------
 278
 279 quiet_cmd_ld = LD      $@
 280 cmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \
 281                $(filter-out FORCE,$^) -o $@
 282
 283 # Objcopy
 284 # ---------------------------------------------------------------------------
 285
 286 quiet_cmd_objcopy = OBJCOPY $@
 287 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
 288
 289 # Gzip
 290 # ---------------------------------------------------------------------------
 291
 292 quiet_cmd_gzip = GZIP    $@
 293 cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \
 294         (rm -f $@ ; false)
 295
 296 # DTC
 297 # ---------------------------------------------------------------------------
 298
 299 # Generate an assembly file to wrap the output of the device tree compiler
 300 quiet_cmd_dt_S_dtb= DTB     $@
 301 # Modified for U-Boot
 302 cmd_dt_S_dtb=                                           \
 303 (                                                       \
 304         echo '.section .dtb.init.rodata,"a"';           \
 305         echo '.balign 16';                              \
 306         echo '.global __dtb_$(subst -,_,$(*F))_begin';  \
 307         echo '__dtb_$(subst -,_,$(*F))_begin:';         \
 308         echo '.incbin "$<" ';                           \
 309         echo '__dtb_$(subst -,_,$(*F))_end:';           \
 310         echo '.global __dtb_$(subst -,_,$(*F))_end';    \
 311         echo '.balign 16';                              \
 312 ) > $@
 313
 314 $(obj)/%.dtb.S: $(obj)/%.dtb
 315         $(call cmd,dt_S_dtb)
 316
 317 quiet_cmd_dtc = DTC     $@
 318 # Modified for U-Boot
 319 # Bring in any U-Boot-specific include at the end of the file
 320 cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
 321         (cat $<; $(if $(u_boot_dtsi),echo '\#include "$(u_boot_dtsi)"')) > $(pre-tmp); \
 322         $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $(pre-tmp) ; \
 323         $(DTC) -O dtb -o $@ -b 0 \
 324                 -i $(dir $<) $(DTC_FLAGS) \
 325                 -d $(depfile).dtc.tmp $(dtc-tmp) ; \
 326         cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
 327
 328 $(obj)/%.dtb: $(src)/%.dts FORCE
 329         $(call if_changed_dep,dtc)
 330
 331 pre-tmp = $(subst $(comma),_,$(dot-target).pre.tmp)
 332 dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
 333
 334 # DTCO
 335 # ---------------------------------------------------------------------------
 336
 337 quiet_cmd_dtco = DTCO    $@
 338 # Rule for objects only; does not put specific u-boot include at the end
 339 # No generation of assembly file either
 340 # Modified for U-Boot
 341 cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
 342         $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) - ; \
 343         $(DTC) -@ -O dtb -o $@ -b 0 \
 344                 -i $(dir $<) $(DTC_FLAGS) \
 345                 -d $(depfile).dtc.tmp $(dtc-tmp) ; \
 346         cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
 347
 348 $(obj)/%.dtbo: $(src)/%.dts FORCE
 349         $(call if_changed_dep,dtco)
 350
 351 # Fonts
 352 # ---------------------------------------------------------------------------
 353
 354 # Generate an assembly file to wrap the font data
 355 quiet_cmd_S_ttf= TTF     $@
 356 # Modified for U-Boot
 357 cmd_S_ttf=                                              \
 358 (                                                       \
 359         echo '.section .rodata.ttf.init,"a"';           \
 360         echo '.balign 16';                              \
 361         echo '.global __ttf_$(*F)_begin';               \
 362         echo '__ttf_$(*F)_begin:';                      \
 363         echo '.incbin "$<" ';                           \
 364         echo '__ttf_$(*F)_end:';                        \
 365         echo '.global __ttf_$(*F)_end';                 \
 366         echo '.balign 16';                              \
 367 ) > $@
 368
 369 $(obj)/%.S: $(src)/%.ttf
 370         $(call cmd,S_ttf)
 371
 372 # EFI applications
 373 # A Makefile target *.efi is built as EFI application.
 374 # A Makefile target *_efi.S wraps *.efi as built-in EFI application.
 375 # ---------------------------------------------------------------------------
 376
 377 # Generate an assembly file to wrap the EFI app
 378 cmd_S_efi=                                      \
 379 (                                               \
 380         echo '.section .rodata.$*.init,"a"';    \
 381         echo '.balign 16';                      \
 382         echo '.global __efi_$*_begin';          \
 383         echo '__efi_$*_begin:';                 \
 384         echo '.incbin "$<" ';                   \
 385         echo '__efi_$*_end:';                   \
 386         echo '.global __efi_$*_end';            \
 387         echo '.balign 16';                      \
 388 ) > $@
 389
 390 $(obj)/%_efi.S: $(obj)/%.efi
 391         $(call cmd,S_efi)
 392
 393 quiet_cmd_efi_objcopy = OBJCOPY $@
 394 cmd_efi_objcopy = $(OBJCOPY) -j .header -j .text -j .sdata -j .data -j \
 395                 .dynamic -j .dynsym  -j .rel* -j .rela* -j .reloc \
 396                 $(if $(EFI_TARGET),$(EFI_TARGET),-O binary) $^ $@
 397
 398 $(obj)/%.efi: $(obj)/%_efi.so
 399         $(call cmd,efi_objcopy)
 400
 401 quiet_cmd_efi_ld = LD      $@
 402 cmd_efi_ld = $(LD) -nostdlib -znocombreloc -T $(EFI_LDS_PATH) -shared \
 403                 -Bsymbolic $^ -o $@
 404
 405 EFI_LDS_PATH = $(srctree)/arch/$(ARCH)/lib/$(EFI_LDS)
 406
 407 $(obj)/%_efi.so: $(obj)/%.o arch/$(ARCH)/lib/$(EFI_CRT0) \
 408                 arch/$(ARCH)/lib/$(EFI_RELOC)
 409         $(call cmd,efi_ld)
 410
 411 # ACPI
 412 # ---------------------------------------------------------------------------
 413 quiet_cmd_acpi_c_asl= ASL     $<
 414 cmd_acpi_c_asl=         \
 415         $(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -P $(UBOOTINCLUDE) -o $<.tmp $<; \
 416         iasl -p $< -tc $<.tmp $(if $(KBUILD_VERBOSE:1=), >/dev/null) && \
 417         mv $(patsubst %.asl,%.hex,$<) $@
 418
 419 $(obj)/dsdt.c:    $(src)/dsdt.asl
 420         $(call cmd,acpi_c_asl)
 421
 422 # Bzip2
 423 # ---------------------------------------------------------------------------
 424
 425 # Bzip2 and LZMA do not include size in file... so we have to fake that;
 426 # append the size as a 32-bit littleendian number as gzip does.
 427 size_append = printf $(shell                                            \
 428 dec_size=0;                                                             \
 429 for F in $1; do                                                         \
 430         fsize=$$(stat -c "%s" $$F);                                     \
 431         dec_size=$$(expr $$dec_size + $$fsize);                         \
 432 done;                                                                   \
 433 printf "%08x\n" $$dec_size |                                            \
 434         sed 's/\(..\)/\1 /g' | {                                        \
 435                 read ch0 ch1 ch2 ch3;                                   \
 436                 for ch in $$ch3 $$ch2 $$ch1 $$ch0; do                   \
 437                         printf '%s%03o' '\\' $$((0x$$ch));              \
 438                 done;                                                   \
 439         }                                                               \
 440 )
 441
 442 quiet_cmd_bzip2 = BZIP2   $@
 443 cmd_bzip2 = (cat $(filter-out FORCE,$^) | \
 444         bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 445         (rm -f $@ ; false)
 446
 447 # Lzma
 448 # ---------------------------------------------------------------------------
 449
 450 quiet_cmd_lzma = LZMA    $@
 451 cmd_lzma = (cat $(filter-out FORCE,$^) | \
 452         lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 453         (rm -f $@ ; false)
 454
 455 quiet_cmd_lzo = LZO     $@
 456 cmd_lzo = (cat $(filter-out FORCE,$^) | \
 457         lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 458         (rm -f $@ ; false)
 459
 460 quiet_cmd_lz4 = LZ4     $@
 461 cmd_lz4 = (cat $(filter-out FORCE,$^) | \
 462         lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 463         (rm -f $@ ; false)
 464
 465 # U-Boot mkimage
 466 # ---------------------------------------------------------------------------
 467
 468 MKIMAGE := $(srctree)/scripts/mkuboot.sh
 469
 470 # SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces
 471 # the number of overrides in arch makefiles
 472 UIMAGE_ARCH ?= $(SRCARCH)
 473 UIMAGE_COMPRESSION ?= $(if $(2),$(2),none)
 474 UIMAGE_OPTS-y ?=
 475 UIMAGE_TYPE ?= kernel
 476 UIMAGE_LOADADDR ?= arch_must_set_this
 477 UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR)
 478 UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)'
 479 UIMAGE_IN ?= $<
 480 UIMAGE_OUT ?= $@
 481
 482 quiet_cmd_uimage = UIMAGE  $(UIMAGE_OUT)
 483       cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
 484                         -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \
 485                         -T $(UIMAGE_TYPE) \
 486                         -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \
 487                         -n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT)
 488
 489 # XZ
 490 # ---------------------------------------------------------------------------
 491 # Use xzkern to compress the kernel image and xzmisc to compress other things.
 492 #
 493 # xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
 494 # of the kernel decompressor. A BCJ filter is used if it is available for
 495 # the target architecture. xzkern also appends uncompressed size of the data
 496 # using size_append. The .xz format has the size information available at
 497 # the end of the file too, but it's in more complex format and it's good to
 498 # avoid changing the part of the boot code that reads the uncompressed size.
 499 # Note that the bytes added by size_append will make the xz tool think that
 500 # the file is corrupt. This is expected.
 501 #
 502 # xzmisc doesn't use size_append, so it can be used to create normal .xz
 503 # files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
 504 # big dictionary would increase the memory usage too much in the multi-call
 505 # decompression mode. A BCJ filter isn't used either.
 506 quiet_cmd_xzkern = XZKERN  $@
 507 cmd_xzkern = (cat $(filter-out FORCE,$^) | \
 508         sh $(srctree)/scripts/xz_wrap.sh && \
 509         $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 510         (rm -f $@ ; false)
 511
 512 quiet_cmd_xzmisc = XZMISC  $@
 513 cmd_xzmisc = (cat $(filter-out FORCE,$^) | \
 514         xz --check=crc32 --lzma2=dict=1MiB) > $@ || \
 515         (rm -f $@ ; false)
 516
 517 # Additional commands for U-Boot
 518 #
 519 # mkimage
 520 # ---------------------------------------------------------------------------
 521 MKIMAGEOUTPUT ?= /dev/null
 522 quiet_cmd_mkimage = MKIMAGE $@
 523 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
 524         $(if $(KBUILD_VERBOSE:1=), >$(MKIMAGEOUTPUT))
 525
 526 # fdtgrep
 527 # ---------------------------------------------------------------------------
 528 # Pass the original device tree file through fdtgrep twice. The first pass
 529 # removes any unwanted nodes (i.e. those which don't have the
 530 # 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second
 531 # pass removes various unused properties from the remaining nodes.
 532 # The output is typically a much smaller device tree file.
 533 ifeq ($(CONFIG_TPL_BUILD),y)
 534 fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl
 535 else
 536 fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-spl
 537 endif
 538 quiet_cmd_fdtgrep = FDTGREP $@
 539       cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -RT $< \
 540                 -n /chosen -n /config -O dtb | \
 541         $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
 542                 $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))