scripts/Makefile.lib

   1 # SPDX-License-Identifier: GPL-2.0
   2 # Backward compatibility
   3 asflags-y  += $(EXTRA_AFLAGS)
   4 ccflags-y  += $(EXTRA_CFLAGS)
   5 cppflags-y += $(EXTRA_CPPFLAGS)
   6 ldflags-y  += $(EXTRA_LDFLAGS)
   7
   8 #
   9 # flags that take effect in sub directories
  10 export KBUILD_SUBDIR_ASFLAGS := $(KBUILD_SUBDIR_ASFLAGS) $(subdir-asflags-y)
  11 export KBUILD_SUBDIR_CCFLAGS := $(KBUILD_SUBDIR_CCFLAGS) $(subdir-ccflags-y)
  12
  13 # Figure out what we need to build from the various variables
  14 # ===========================================================================
  15
  16 # When an object is listed to be built compiled-in and modular,
  17 # only build the compiled-in version
  18
  19 obj-m := $(filter-out $(obj-y),$(obj-m))
  20
  21 # Libraries are always collected in one lib file.
  22 # Filter out objects already built-in
  23
  24 lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
  25
  26
  27 # Handle objects in subdirs
  28 # ---------------------------------------------------------------------------
  29 # o if we encounter foo/ in $(obj-y), replace it by foo/built-in.o
  30 #   and add the directory to the list of dirs to descend into: $(subdir-y)
  31 # o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
  32 #   and add the directory to the list of dirs to descend into: $(subdir-m)
  33
  34 # Determine modorder.
  35 # Unfortunately, we don't have information about ordering between -y
  36 # and -m subdirs.  Just put -y's first.
  37 modorder        := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))
  38
  39 __subdir-y      := $(patsubst %/,%,$(filter %/, $(obj-y)))
  40 subdir-y        += $(__subdir-y)
  41 __subdir-m      := $(patsubst %/,%,$(filter %/, $(obj-m)))
  42 subdir-m        += $(__subdir-m)
  43 obj-y           := $(patsubst %/, %/built-in.o, $(obj-y))
  44 obj-m           := $(filter-out %/, $(obj-m))
  45
  46 # Subdirectories we need to descend into
  47
  48 subdir-ym       := $(sort $(subdir-y) $(subdir-m))
  49
  50 # if $(foo-objs) exists, foo.o is a composite object
  51 multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
  52 multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
  53 multi-used   := $(multi-used-y) $(multi-used-m)
  54 single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m)))
  55
  56 # Build list of the parts of our composite objects, our composite
  57 # objects depend on those (obviously)
  58 multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y)))
  59 multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)))
  60 multi-objs   := $(multi-objs-y) $(multi-objs-m)
  61
  62 # $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
  63 # tell kbuild to descend
  64 subdir-obj-y := $(filter %/built-in.o, $(obj-y))
  65
  66 # $(obj-dirs) is a list of directories that contain object files
  67 obj-dirs := $(dir $(multi-objs) $(obj-y))
  68
  69 # Replace multi-part objects by their individual parts, look at local dir only
  70 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)
  71 real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
  72
  73 # Add subdir path
  74
  75 extra-y         := $(addprefix $(obj)/,$(extra-y))
  76 always          := $(addprefix $(obj)/,$(always))
  77 targets         := $(addprefix $(obj)/,$(targets))
  78 modorder        := $(addprefix $(obj)/,$(modorder))
  79 obj-y           := $(addprefix $(obj)/,$(obj-y))
  80 obj-m           := $(addprefix $(obj)/,$(obj-m))
  81 lib-y           := $(addprefix $(obj)/,$(lib-y))
  82 subdir-obj-y    := $(addprefix $(obj)/,$(subdir-obj-y))
  83 real-objs-y     := $(addprefix $(obj)/,$(real-objs-y))
  84 real-objs-m     := $(addprefix $(obj)/,$(real-objs-m))
  85 single-used-m   := $(addprefix $(obj)/,$(single-used-m))
  86 multi-used-y    := $(addprefix $(obj)/,$(multi-used-y))
  87 multi-used-m    := $(addprefix $(obj)/,$(multi-used-m))
  88 multi-objs-y    := $(addprefix $(obj)/,$(multi-objs-y))
  89 multi-objs-m    := $(addprefix $(obj)/,$(multi-objs-m))
  90 subdir-ym       := $(addprefix $(obj)/,$(subdir-ym))
  91 obj-dirs        := $(addprefix $(obj)/,$(obj-dirs))
  92
  93 # These flags are needed for modversions and compiling, so we define them here
  94 # already
  95 # $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will
  96 # end up in (or would, if it gets compiled in)
  97 # Note: Files that end up in two or more modules are compiled without the
  98 #       KBUILD_MODNAME definition. The reason is that any made-up name would
  99 #       differ in different configs.
 100 name-fix = $(subst $(comma),_,$(subst -,_,$1))
 101 basename_flags = -D"KBUILD_BASENAME=KBUILD_STR($(call name-fix,$(basetarget)))"
 102 modname_flags  = $(if $(filter 1,$(words $(modname))),\
 103                  -D"KBUILD_MODNAME=KBUILD_STR($(call name-fix,$(modname)))")
 104
 105 orig_c_flags   = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \
 106                  $(ccflags-y) $(CFLAGS_$(basetarget).o)
 107 _c_flags       = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
 108 orig_a_flags   = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \
 109                  $(asflags-y) $(AFLAGS_$(basetarget).o)
 110 _a_flags       = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags))
 111 _cpp_flags     = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
 112
 113 #
 114 # Enable gcov profiling flags for a file, directory or for all files depending
 115 # on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL
 116 # (in this order)
 117 #
 118 ifeq ($(CONFIG_GCOV_KERNEL),y)
 119 _c_flags += $(if $(patsubst n%,, \
 120                 $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \
 121                 $(CFLAGS_GCOV))
 122 endif
 123
 124 #
 125 # Enable address sanitizer flags for kernel except some files or directories
 126 # we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE)
 127 #
 128 ifeq ($(CONFIG_KASAN),y)
 129 _c_flags += $(if $(patsubst n%,, \
 130                 $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \
 131                 $(CFLAGS_KASAN))
 132 endif
 133
 134 # If building the kernel in a separate objtree expand all occurrences
 135 # of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
 136
 137 ifeq ($(KBUILD_SRC),)
 138 __c_flags       = $(_c_flags)
 139 __a_flags       = $(_a_flags)
 140 __cpp_flags     = $(_cpp_flags)
 141 else
 142
 143 # -I$(obj) locates generated .h files
 144 # $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files
 145 #   and locates generated .h files
 146 # FIXME: Replace both with specific CFLAGS* statements in the makefiles
 147 __c_flags       = $(call addtree,-I$(obj)) $(call flags,_c_flags)
 148 __a_flags       =                          $(call flags,_a_flags)
 149 __cpp_flags     =                          $(call flags,_cpp_flags)
 150 endif
 151
 152 # Modified for U-Boot: LINUXINCLUDE -> UBOOTINCLUDE
 153 c_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
 154                  $(__c_flags) $(modkern_cflags)                           \
 155                  -D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags)
 156
 157 a_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
 158                  $(__a_flags) $(modkern_aflags)
 159
 160 cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
 161                  $(__cpp_flags)
 162
 163 ld_flags       = $(LDFLAGS) $(ldflags-y)
 164
 165 # Try these files in order to find the U-Boot-specific .dtsi include file
 166 u_boot_dtsi_options = $(strip $(wildcard $(dir $<)$(basename $(notdir $<))-u-boot.dtsi) \
 167         $(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi) \
 168         $(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi) \
 169         $(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi) \
 170         $(wildcard $(dir $<)u-boot.dtsi))
 171
 172 u_boot_dtsi_options_raw = $(warning Automatic .dtsi inclusion: options: \
 173         $(dir $<)$(basename $(notdir $<))-u-boot.dtsi \
 174         $(dir $<)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi \
 175         $(dir $<)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi \
 176         $(dir $<)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi \
 177         $(dir $<)u-boot.dtsi ... \
 178         found: $(if $(u_boot_dtsi_options),"$(u_boot_dtsi_options)",nothing!))
 179
 180 # Uncomment for debugging
 181 # This shows all the files that were considered and the one that we chose.
 182 # u_boot_dtsi_options_debug = $(u_boot_dtsi_options_raw)
 183
 184 # We use the first match
 185 u_boot_dtsi = $(strip $(u_boot_dtsi_options_debug) \
 186         $(notdir $(firstword $(u_boot_dtsi_options))))
 187
 188 # Modified for U-Boot
 189 dtc_cpp_flags  = -Wp,-MD,$(depfile).pre.tmp -nostdinc                    \
 190                  -I$(srctree)/arch/$(ARCH)/dts                           \
 191                  -I$(srctree)/arch/$(ARCH)/dts/include                   \
 192                  -Iinclude                                               \
 193                  -I$(srctree)/include                                    \
 194                  -I$(srctree)/arch/$(ARCH)/include                       \
 195                  -include $(srctree)/include/linux/kconfig.h             \
 196                  -D__ASSEMBLY__                                          \
 197                  -undef -D__DTS__
 198
 199 # Finds the multi-part object the current object will be linked into
 200 modname-multi = $(sort $(foreach m,$(multi-used),\
 201                 $(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))
 202
 203 # Useful for describing the dependency of composite objects
 204 # Usage:
 205 #   $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add)
 206 define multi_depend
 207 $(foreach m, $(notdir $1), \
 208         $(eval $(obj)/$m: \
 209         $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
 210 endef
 211
 212 # LEX
 213 # ---------------------------------------------------------------------------
 214 quiet_cmd_flex = LEX     $@
 215       cmd_flex = $(LEX) -o$@ -L $<
 216
 217 $(obj)/%.lex.c: $(src)/%.l FORCE
 218         $(call if_changed,flex)
 219
 220 # YACC
 221 # ---------------------------------------------------------------------------
 222 quiet_cmd_bison = YACC    $@
 223       cmd_bison = $(YACC) -o$@ -t -l $<
 224
 225 $(obj)/%.tab.c: $(src)/%.y FORCE
 226         $(call if_changed,bison)
 227
 228 quiet_cmd_bison_h = YACC    $@
 229       cmd_bison_h = $(YACC) -o/dev/null --defines=$@ -t -l $<
 230
 231 $(obj)/%.tab.h: $(src)/%.y FORCE
 232         $(call if_changed,bison_h)
 233
 234 # Shipped files
 235 # ===========================================================================
 236
 237 quiet_cmd_shipped = SHIPPED $@
 238 cmd_shipped = cat $< > $@
 239
 240 $(obj)/%: $(src)/%_shipped
 241         $(call cmd,shipped)
 242
 243 # Commands useful for building a boot image
 244 # ===========================================================================
 245 #
 246 #       Use as following:
 247 #
 248 #       target: source(s) FORCE
 249 #               $(if_changed,ld/objcopy/gzip)
 250 #
 251 #       and add target to extra-y so that we know we have to
 252 #       read in the saved command line
 253
 254 # Linking
 255 # ---------------------------------------------------------------------------
 256
 257 quiet_cmd_ld = LD      $@
 258 cmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \
 259                $(filter-out FORCE,$^) -o $@
 260
 261 # Objcopy
 262 # ---------------------------------------------------------------------------
 263
 264 quiet_cmd_objcopy = OBJCOPY $@
 265 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
 266
 267 # Gzip
 268 # ---------------------------------------------------------------------------
 269
 270 quiet_cmd_gzip = GZIP    $@
 271 cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \
 272         (rm -f $@ ; false)
 273
 274 # DTC
 275 # ---------------------------------------------------------------------------
 276
 277 # Generate an assembly file to wrap the output of the device tree compiler
 278 quiet_cmd_dt_S_dtb= DTB     $@
 279 # Modified for U-Boot
 280 cmd_dt_S_dtb=                                           \
 281 (                                                       \
 282         echo '.section .dtb.init.rodata,"a"';           \
 283         echo '.balign 16';                              \
 284         echo '.global __dtb_$(subst -,_,$(*F))_begin';  \
 285         echo '__dtb_$(subst -,_,$(*F))_begin:';         \
 286         echo '.incbin "$<" ';                           \
 287         echo '__dtb_$(subst -,_,$(*F))_end:';           \
 288         echo '.global __dtb_$(subst -,_,$(*F))_end';    \
 289         echo '.balign 16';                              \
 290 ) > $@
 291
 292 $(obj)/%.dtb.S: $(obj)/%.dtb
 293         $(call cmd,dt_S_dtb)
 294
 295 quiet_cmd_dtc = DTC     $@
 296 # Modified for U-Boot
 297 # Bring in any U-Boot-specific include at the end of the file
 298 cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
 299         (cat $<; $(if $(u_boot_dtsi),echo '$(pound)include "$(u_boot_dtsi)"')) > $(pre-tmp); \
 300         $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $(pre-tmp) ; \
 301         $(DTC) -O dtb -o $@ -b 0 \
 302                 -i $(dir $<) $(DTC_FLAGS) \
 303                 -d $(depfile).dtc.tmp $(dtc-tmp) ; \
 304         cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) ; \
 305         sed -i "s:$(pre-tmp):$(<):" $(depfile)
 306
 307 $(obj)/%.dtb: $(src)/%.dts FORCE
 308         $(call if_changed_dep,dtc)
 309
 310 pre-tmp = $(subst $(comma),_,$(dot-target).pre.tmp)
 311 dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
 312
 313 # DTCO
 314 # ---------------------------------------------------------------------------
 315
 316 quiet_cmd_dtco = DTCO    $@
 317 # Rule for objects only; does not put specific u-boot include at the end
 318 # No generation of assembly file either
 319 # Modified for U-Boot
 320 cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
 321         $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
 322         $(DTC) -@ -O dtb -o $@ -b 0 \
 323                 -i $(dir $<) $(DTC_FLAGS) \
 324                 -d $(depfile).dtc.tmp $(dtc-tmp) ; \
 325         cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
 326
 327 $(obj)/%.dtbo: $(src)/%.dts FORCE
 328         $(call if_changed_dep,dtco)
 329
 330 # Fonts
 331 # ---------------------------------------------------------------------------
 332
 333 # Generate an assembly file to wrap the font data
 334 quiet_cmd_S_ttf= TTF     $@
 335 # Modified for U-Boot
 336 cmd_S_ttf=                                              \
 337 (                                                       \
 338         echo '.section .rodata.ttf.init,"a"';           \
 339         echo '.balign 16';                              \
 340         echo '.global __ttf_$(*F)_begin';               \
 341         echo '__ttf_$(*F)_begin:';                      \
 342         echo '.incbin "$<" ';                           \
 343         echo '__ttf_$(*F)_end:';                        \
 344         echo '.global __ttf_$(*F)_end';                 \
 345         echo '.balign 16';                              \
 346 ) > $@
 347
 348 $(obj)/%.S: $(src)/%.ttf
 349         $(call cmd,S_ttf)
 350
 351 # EFI applications
 352 # A Makefile target *.efi is built as EFI application.
 353 # A Makefile target *_efi.S wraps *.efi as built-in EFI application.
 354 # ---------------------------------------------------------------------------
 355
 356 # Generate an assembly file to wrap the EFI app
 357 cmd_S_efi=                                      \
 358 (                                               \
 359         echo '.section .rodata.$*.init,"a"';    \
 360         echo '.balign 16';                      \
 361         echo '.global __efi_$*_begin';          \
 362         echo '__efi_$*_begin:';                 \
 363         echo '.incbin "$<" ';                   \
 364         echo '__efi_$*_end:';                   \
 365         echo '.global __efi_$*_end';            \
 366         echo '.balign 16';                      \
 367 ) > $@
 368
 369 $(obj)/%_efi.S: $(obj)/%.efi
 370         $(call cmd,S_efi)
 371
 372 quiet_cmd_efi_objcopy = OBJCOPY $@
 373 cmd_efi_objcopy = $(OBJCOPY) -j .header -j .text -j .sdata -j .data -j \
 374                 .dynamic -j .dynsym  -j .rel* -j .rela* -j .reloc \
 375                 $(if $(EFI_TARGET),$(EFI_TARGET),-O binary) $^ $@
 376
 377 $(obj)/%.efi: $(obj)/%_efi.so
 378         $(call cmd,efi_objcopy)
 379
 380 quiet_cmd_efi_ld = LD      $@
 381 cmd_efi_ld = $(LD) -nostdlib -znocombreloc -T $(EFI_LDS_PATH) -shared \
 382                 -Bsymbolic -s $^ -o $@
 383
 384 EFI_LDS_PATH = $(srctree)/arch/$(ARCH)/lib/$(EFI_LDS)
 385
 386 $(obj)/efi_crt0.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_CRT0:.o=.S)
 387         $(call if_changed_dep,as_o_S)
 388
 389 $(obj)/efi_reloc.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_RELOC:.o=.c) $(recordmcount_source) FORCE
 390         $(call cmd,force_checksrc)
 391         $(call if_changed_rule,cc_o_c)
 392
 393 $(obj)/%_efi.so: $(obj)/%.o $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o
 394         $(call cmd,efi_ld)
 395
 396 # ACPI
 397 # ---------------------------------------------------------------------------
 398 quiet_cmd_acpi_c_asl= ASL     $<
 399 cmd_acpi_c_asl=         \
 400         $(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -P $(UBOOTINCLUDE) -o $<.tmp $<; \
 401         iasl -p $< -tc $<.tmp $(if $(KBUILD_VERBOSE:1=), >/dev/null) && \
 402         mv $(patsubst %.asl,%.hex,$<) $@
 403
 404 $(obj)/dsdt.c:    $(src)/dsdt.asl
 405         $(call cmd,acpi_c_asl)
 406         $(Q)sed -i -e "s,dsdt_aml_code,AmlCode," $@
 407
 408 # Bzip2
 409 # ---------------------------------------------------------------------------
 410
 411 # Bzip2 and LZMA do not include size in file... so we have to fake that;
 412 # append the size as a 32-bit littleendian number as gzip does.
 413 size_append = printf $(shell                                            \
 414 dec_size=0;                                                             \
 415 for F in $1; do                                                         \
 416         fsize=$$(stat -c "%s" $$F);                                     \
 417         dec_size=$$(expr $$dec_size + $$fsize);                         \
 418 done;                                                                   \
 419 printf "%08x\n" $$dec_size |                                            \
 420         sed 's/\(..\)/\1 /g' | {                                        \
 421                 read ch0 ch1 ch2 ch3;                                   \
 422                 for ch in $$ch3 $$ch2 $$ch1 $$ch0; do                   \
 423                         printf '%s%03o' '\\' $$((0x$$ch));              \
 424                 done;                                                   \
 425         }                                                               \
 426 )
 427
 428 quiet_cmd_bzip2 = BZIP2   $@
 429 cmd_bzip2 = (cat $(filter-out FORCE,$^) | \
 430         bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 431         (rm -f $@ ; false)
 432
 433 # Lzma
 434 # ---------------------------------------------------------------------------
 435
 436 quiet_cmd_lzma = LZMA    $@
 437 cmd_lzma = (cat $(filter-out FORCE,$^) | \
 438         lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 439         (rm -f $@ ; false)
 440
 441 quiet_cmd_lzo = LZO     $@
 442 cmd_lzo = (cat $(filter-out FORCE,$^) | \
 443         lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 444         (rm -f $@ ; false)
 445
 446 quiet_cmd_lz4 = LZ4     $@
 447 cmd_lz4 = (cat $(filter-out FORCE,$^) | \
 448         lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 449         (rm -f $@ ; false)
 450
 451 # U-Boot mkimage
 452 # ---------------------------------------------------------------------------
 453
 454 MKIMAGE := $(srctree)/scripts/mkuboot.sh
 455
 456 # SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces
 457 # the number of overrides in arch makefiles
 458 UIMAGE_ARCH ?= $(SRCARCH)
 459 UIMAGE_COMPRESSION ?= $(if $(2),$(2),none)
 460 UIMAGE_OPTS-y ?=
 461 UIMAGE_TYPE ?= kernel
 462 UIMAGE_LOADADDR ?= arch_must_set_this
 463 UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR)
 464 UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)'
 465 UIMAGE_IN ?= $<
 466 UIMAGE_OUT ?= $@
 467
 468 quiet_cmd_uimage = UIMAGE  $(UIMAGE_OUT)
 469       cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
 470                         -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \
 471                         -T $(UIMAGE_TYPE) \
 472                         -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \
 473                         -n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT)
 474
 475 # XZ
 476 # ---------------------------------------------------------------------------
 477 # Use xzkern to compress the kernel image and xzmisc to compress other things.
 478 #
 479 # xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
 480 # of the kernel decompressor. A BCJ filter is used if it is available for
 481 # the target architecture. xzkern also appends uncompressed size of the data
 482 # using size_append. The .xz format has the size information available at
 483 # the end of the file too, but it's in more complex format and it's good to
 484 # avoid changing the part of the boot code that reads the uncompressed size.
 485 # Note that the bytes added by size_append will make the xz tool think that
 486 # the file is corrupt. This is expected.
 487 #
 488 # xzmisc doesn't use size_append, so it can be used to create normal .xz
 489 # files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
 490 # big dictionary would increase the memory usage too much in the multi-call
 491 # decompression mode. A BCJ filter isn't used either.
 492 quiet_cmd_xzkern = XZKERN  $@
 493 cmd_xzkern = (cat $(filter-out FORCE,$^) | \
 494         sh $(srctree)/scripts/xz_wrap.sh && \
 495         $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 496         (rm -f $@ ; false)
 497
 498 quiet_cmd_xzmisc = XZMISC  $@
 499 cmd_xzmisc = (cat $(filter-out FORCE,$^) | \
 500         xz --check=crc32 --lzma2=dict=1MiB) > $@ || \
 501         (rm -f $@ ; false)
 502
 503 # Additional commands for U-Boot
 504 #
 505 # mkimage
 506 # ---------------------------------------------------------------------------
 507 MKIMAGEOUTPUT ?= /dev/null
 508 quiet_cmd_mkimage = MKIMAGE $@
 509 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
 510         >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
 511
 512 # fdtgrep
 513 # ---------------------------------------------------------------------------
 514 # Pass the original device tree file through fdtgrep twice. The first pass
 515 # removes any unwanted nodes (i.e. those which don't have the
 516 # 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second
 517 # pass removes various unused properties from the remaining nodes.
 518 # The output is typically a much smaller device tree file.
 519 ifeq ($(CONFIG_TPL_BUILD),y)
 520 fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl
 521 else
 522 fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-spl
 523 endif
 524 quiet_cmd_fdtgrep = FDTGREP $@
 525       cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -RT $< \
 526                 -n /chosen -n /config -O dtb | \
 527         $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
 528                 -P u-boot,dm-pre-reloc -P u-boot,dm-spl -P u-boot,dm-tpl \
 529                 $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))