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
  61 # $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
  62 # tell kbuild to descend
  63 subdir-obj-y := $(filter %/built-in.o, $(obj-y))
  64
  65 # Replace multi-part objects by their individual parts, look at local dir only
  66 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)
  67 real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
  68
  69 # Add subdir path
  70
  71 extra-y         := $(addprefix $(obj)/,$(extra-y))
  72 always          := $(addprefix $(obj)/,$(always))
  73 targets         := $(addprefix $(obj)/,$(targets))
  74 modorder        := $(addprefix $(obj)/,$(modorder))
  75 obj-y           := $(addprefix $(obj)/,$(obj-y))
  76 obj-m           := $(addprefix $(obj)/,$(obj-m))
  77 lib-y           := $(addprefix $(obj)/,$(lib-y))
  78 subdir-obj-y    := $(addprefix $(obj)/,$(subdir-obj-y))
  79 real-objs-y     := $(addprefix $(obj)/,$(real-objs-y))
  80 real-objs-m     := $(addprefix $(obj)/,$(real-objs-m))
  81 single-used-m   := $(addprefix $(obj)/,$(single-used-m))
  82 multi-used-y    := $(addprefix $(obj)/,$(multi-used-y))
  83 multi-used-m    := $(addprefix $(obj)/,$(multi-used-m))
  84 multi-objs-y    := $(addprefix $(obj)/,$(multi-objs-y))
  85 multi-objs-m    := $(addprefix $(obj)/,$(multi-objs-m))
  86 subdir-ym       := $(addprefix $(obj)/,$(subdir-ym))
  87
  88 # These flags are needed for modversions and compiling, so we define them here
  89 # already
  90 # $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will
  91 # end up in (or would, if it gets compiled in)
  92 # Note: Files that end up in two or more modules are compiled without the
  93 #       KBUILD_MODNAME definition. The reason is that any made-up name would
  94 #       differ in different configs.
  95 name-fix = $(squote)$(quote)$(subst $(comma),_,$(subst -,_,$1))$(quote)$(squote)
  96 basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget))
  97 modname_flags  = $(if $(filter 1,$(words $(modname))),\
  98                  -DKBUILD_MODNAME=$(call name-fix,$(modname)))
  99
 100 orig_c_flags   = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \
 101                  $(ccflags-y) $(CFLAGS_$(basetarget).o)
 102 _c_flags       = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
 103 orig_a_flags   = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \
 104                  $(asflags-y) $(AFLAGS_$(basetarget).o)
 105 _a_flags       = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags))
 106 _cpp_flags     = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
 107
 108 #
 109 # Enable gcov profiling flags for a file, directory or for all files depending
 110 # on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL
 111 # (in this order)
 112 #
 113 ifeq ($(CONFIG_GCOV_KERNEL),y)
 114 _c_flags += $(if $(patsubst n%,, \
 115                 $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \
 116                 $(CFLAGS_GCOV))
 117 endif
 118
 119 #
 120 # Enable address sanitizer flags for kernel except some files or directories
 121 # we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE)
 122 #
 123 ifeq ($(CONFIG_KASAN),y)
 124 _c_flags += $(if $(patsubst n%,, \
 125                 $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \
 126                 $(CFLAGS_KASAN))
 127 endif
 128
 129 # If building the kernel in a separate objtree expand all occurrences
 130 # of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
 131
 132 ifeq ($(KBUILD_SRC),)
 133 __c_flags       = $(_c_flags)
 134 __a_flags       = $(_a_flags)
 135 __cpp_flags     = $(_cpp_flags)
 136 else
 137
 138 # -I$(obj) locates generated .h files
 139 # $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files
 140 #   and locates generated .h files
 141 # FIXME: Replace both with specific CFLAGS* statements in the makefiles
 142 __c_flags       = $(if $(obj),$(call addtree,-I$(src)) -I$(obj)) \
 143                   $(call flags,_c_flags)
 144 __a_flags       = $(call flags,_a_flags)
 145 __cpp_flags     = $(call flags,_cpp_flags)
 146 endif
 147
 148 # Modified for U-Boot: LINUXINCLUDE -> UBOOTINCLUDE
 149 c_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
 150                  $(__c_flags) $(modkern_cflags)                           \
 151                  $(basename_flags) $(modname_flags)
 152
 153 a_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
 154                  $(__a_flags) $(modkern_aflags)
 155
 156 cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
 157                  $(__cpp_flags)
 158
 159 ld_flags       = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F))
 160
 161 # Try these files in order to find the U-Boot-specific .dtsi include file
 162 u_boot_dtsi_options = $(strip $(wildcard $(dir $<)$(basename $(notdir $<))-u-boot.dtsi) \
 163         $(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi) \
 164         $(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi) \
 165         $(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi) \
 166         $(wildcard $(dir $<)u-boot.dtsi))
 167
 168 u_boot_dtsi_options_raw = $(warning Automatic .dtsi inclusion: options: \
 169         $(dir $<)$(basename $(notdir $<))-u-boot.dtsi \
 170         $(dir $<)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi \
 171         $(dir $<)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi \
 172         $(dir $<)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi \
 173         $(dir $<)u-boot.dtsi ... \
 174         found: $(if $(u_boot_dtsi_options),"$(u_boot_dtsi_options)",nothing!))
 175
 176 # Uncomment for debugging
 177 # This shows all the files that were considered and the one that we chose.
 178 ifdef DEVICE_TREE_DEBUG
 179 u_boot_dtsi_options_debug = $(warning $(u_boot_dtsi_options_raw))
 180 endif
 181
 182 # We use the first match to be included
 183 dtsi_include_list = $(strip $(u_boot_dtsi_options_debug) \
 184         $(notdir $(firstword $(u_boot_dtsi_options))))
 185
 186 # The CONFIG_DEVICE_TREE_INCLUDES also need to be included
 187 dtsi_include_list += $(CONFIG_DEVICE_TREE_INCLUDES)
 188
 189 # Modified for U-Boot
 190 dtc_cpp_flags  = -Wp,-MD,$(depfile).pre.tmp -nostdinc                    \
 191                  $(UBOOTINCLUDE)                                         \
 192                  -I$(dir $<)                                             \
 193                  -I$(srctree)/arch/$(ARCH)/dts/include                   \
 194                  -I$(srctree)/include                                    \
 195                  -D__ASSEMBLY__                                          \
 196                  -undef -D__DTS__
 197
 198 # Finds the multi-part object the current object will be linked into
 199 modname-multi = $(sort $(foreach m,$(multi-used),\
 200                 $(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))
 201
 202 # Useful for describing the dependency of composite objects
 203 # Usage:
 204 #   $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add)
 205 define multi_depend
 206 $(foreach m, $(notdir $1), \
 207         $(eval $(obj)/$m: \
 208         $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
 209 endef
 210
 211 # LEX
 212 # ---------------------------------------------------------------------------
 213 quiet_cmd_flex = LEX     $@
 214       cmd_flex = $(LEX) -o$@ -L $<
 215
 216 $(obj)/%.lex.c: $(src)/%.l FORCE
 217         $(call if_changed,flex)
 218
 219 # YACC
 220 # ---------------------------------------------------------------------------
 221 quiet_cmd_bison = YACC    $@
 222       cmd_bison = $(YACC) -o$@ -t -l $<
 223
 224 $(obj)/%.tab.c: $(src)/%.y FORCE
 225         $(call if_changed,bison)
 226
 227 quiet_cmd_bison_h = YACC    $@
 228       cmd_bison_h = $(YACC) -o/dev/null --defines=$@ -t -l $<
 229
 230 $(obj)/%.tab.h: $(src)/%.y FORCE
 231         $(call if_changed,bison_h)
 232
 233 # Shipped files
 234 # ===========================================================================
 235
 236 quiet_cmd_shipped = SHIPPED $@
 237 cmd_shipped = cat $< > $@
 238
 239 $(obj)/%: $(src)/%_shipped
 240         $(call cmd,shipped)
 241
 242 # Commands useful for building a boot image
 243 # ===========================================================================
 244 #
 245 #       Use as following:
 246 #
 247 #       target: source(s) FORCE
 248 #               $(if_changed,ld/objcopy/gzip)
 249 #
 250 #       and add target to extra-y so that we know we have to
 251 #       read in the saved command line
 252
 253 # Linking
 254 # ---------------------------------------------------------------------------
 255
 256 quiet_cmd_ld = LD      $@
 257 cmd_ld = $(LD) $(ld_flags) $(filter-out FORCE,$^) -o $@
 258
 259 # Objcopy
 260 # ---------------------------------------------------------------------------
 261
 262 quiet_cmd_objcopy = OBJCOPY $@
 263 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
 264
 265 # Gzip
 266 # ---------------------------------------------------------------------------
 267
 268 quiet_cmd_gzip = GZIP    $@
 269 cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \
 270         (rm -f $@ ; false)
 271
 272 # DTC
 273 # ---------------------------------------------------------------------------
 274
 275 # Disable noisy checks by default
 276 ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
 277 DTC_FLAGS += -Wno-unit_address_vs_reg \
 278         -Wno-unit_address_format \
 279         -Wno-avoid_unnecessary_addr_size \
 280         -Wno-alias_paths \
 281         -Wno-graph_child_address \
 282         -Wno-graph_port \
 283         -Wno-unique_unit_address \
 284         -Wno-simple_bus_reg \
 285         -Wno-pci_device_reg
 286
 287 # U-Boot specific disables
 288 DTC_FLAGS += -Wno-pci_bridge \
 289         -Wno-pci_device_bus_num
 290 endif
 291
 292 ifneq ($(findstring 2,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
 293 DTC_FLAGS += -Wnode_name_chars_strict \
 294         -Wproperty_name_chars_strict
 295 endif
 296
 297 DTC_FLAGS += $(DTC_FLAGS_$(basetarget))
 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         $(call cmd,dt_S_dtb)
 316
 317 ifeq ($(CONFIG_OF_LIBFDT_OVERLAY),y)
 318 DTC_FLAGS += -@
 319 endif
 320
 321 quiet_cmd_dtc = DTC     $@
 322 # Modified for U-Boot
 323 # Bring in any U-Boot-specific include at the end of the file
 324 # And finally any custom .dtsi fragments specified with CONFIG_DEVICE_TREE_INCLUDES
 325 cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
 326         (cat $< > $(pre-tmp)); \
 327         $(foreach f,$(subst $(quote),,$(dtsi_include_list)), \
 328           echo '$(pound)include "$(f)"' >> $(pre-tmp);) \
 329         $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $(pre-tmp) ; \
 330         $(DTC) -O dtb -o $@ -b 0 \
 331                 -i $(dir $<) $(DTC_FLAGS) \
 332                 -d $(depfile).dtc.tmp $(dtc-tmp) || \
 333                 (echo "Check $(shell pwd)/$(pre-tmp) for errors" && false) \
 334                 ; \
 335         sed "s:$(pre-tmp):$(<):" $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
 336
 337 quiet_cmd_capsule_esl_gen = CAPSULE_ESL_GEN $@
 338 cmd_capsule_esl_gen = \
 339         $(shell sed "s:ESL_BIN_FILE:$(capsule_esl_path):" $(capsule_esl_input_file) > $@)
 340
 341 $(obj)/.capsule_esl.dtsi: FORCE
 342 ifeq ($(CONFIG_EFI_CAPSULE_ESL_FILE),"")
 343         $(error "CONFIG_EFI_CAPSULE_ESL_FILE is empty, EFI capsule authentication \
 344         public key must be specified when CONFIG_EFI_CAPSULE_AUTHENTICATE is enabled")
 345 else
 346         $(call cmd_capsule_esl_gen)
 347 endif
 348
 349 capsule_esl_input_file=$(srctree)/lib/efi_loader/capsule_esl.dtsi.in
 350 capsule_esl_dtsi = .capsule_esl.dtsi
 351 capsule_esl_path=$(abspath $(srctree)/$(subst $(quote),,$(CONFIG_EFI_CAPSULE_ESL_FILE)))
 352
 353 ifdef CONFIG_EFI_CAPSULE_AUTHENTICATE
 354 dtsi_include_list += $(capsule_esl_dtsi)
 355 endif
 356
 357 dtsi_include_list_deps = $(addprefix $(obj)/,$(subst $(quote),,$(dtsi_include_list)))
 358
 359 $(obj)/%.dtb: $(src)/%.dts $(DTC) $(dtsi_include_list_deps) FORCE
 360         $(call if_changed_dep,dtc)
 361
 362 pre-tmp = $(subst $(comma),_,$(dot-target).pre.tmp)
 363 dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
 364
 365 # DTCO
 366 # ---------------------------------------------------------------------------
 367
 368 quiet_cmd_dtco = DTCO    $@
 369 # Rule for objects only; does not put specific u-boot include at the end
 370 # No generation of assembly file either
 371 # Modified for U-Boot
 372 cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
 373         $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
 374         $(DTC) -@ -O dtb -o $@ -b 0 \
 375                 -i $(dir $<) $(DTC_FLAGS) \
 376                 -d $(depfile).dtc.tmp $(dtc-tmp) ; \
 377         cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
 378
 379 $(obj)/%.dtbo: $(src)/%.dts $(DTC) FORCE
 380         $(call if_changed_dep,dtco)
 381
 382 $(obj)/%.dtbo: $(src)/%.dtso $(DTC) FORCE
 383         $(call if_changed_dep,dtco)
 384
 385 # Fonts
 386 # ---------------------------------------------------------------------------
 387
 388 # Generate an assembly file to wrap the font data
 389 quiet_cmd_S_ttf= TTF     $@
 390 # Modified for U-Boot
 391 cmd_S_ttf=                                              \
 392 (                                                       \
 393         echo '.section .rodata.ttf.init,"a"';           \
 394         echo '.balign 16';                              \
 395         echo '.global __ttf_$(*F)_begin';               \
 396         echo '__ttf_$(*F)_begin:';                      \
 397         echo '.incbin "$<" ';                           \
 398         echo '__ttf_$(*F)_end:';                        \
 399         echo '.global __ttf_$(*F)_end';                 \
 400         echo '.balign 16';                              \
 401 ) > $@
 402
 403 $(obj)/%.S: $(src)/%.ttf
 404         $(call cmd,S_ttf)
 405
 406 # Splash logos
 407 # ---------------------------------------------------------------------------
 408
 409 # Generate an assembly file to wrap the splash data
 410 quiet_cmd_S_splash= TTF     $@
 411 # Modified for U-Boot
 412 cmd_S_splash=                                           \
 413 (                                                       \
 414         echo '.section .rodata.splash.init,"a"';                \
 415         echo '.balign 16';                              \
 416         echo '.global __splash_$(*F)_begin';            \
 417         echo '__splash_$(*F)_begin:';                   \
 418         echo '.incbin "$<" ';                           \
 419         echo '__splash_$(*F)_end:';                     \
 420         echo '.global __splash_$(*F)_end';                      \
 421         echo '.balign 16';                              \
 422 ) > $@
 423
 424 $(obj)/%.S: $(src)/%.bmp
 425         $(call cmd,S_splash)
 426
 427 # EFI applications
 428 # A Makefile target *.efi is built as EFI application.
 429 # A Makefile target *_efi.S wraps *.efi as built-in EFI application.
 430 # ---------------------------------------------------------------------------
 431
 432 # Generate an assembly file to wrap the EFI app
 433 cmd_S_efi=                                      \
 434 (                                               \
 435         echo '.section .rodata.$*.init,"a"';    \
 436         echo '.balign 16';                      \
 437         echo '.global __efi_$*_begin';          \
 438         echo '__efi_$*_begin:';                 \
 439         echo '.incbin "$<" ';                   \
 440         echo '__efi_$*_end:';                   \
 441         echo '.global __efi_$*_end';            \
 442         echo '.balign 16';                      \
 443 ) > $@
 444
 445 $(obj)/%_efi.S: $(obj)/%.efi
 446         $(call cmd,S_efi)
 447
 448 quiet_cmd_efi_objcopy = OBJCOPY $@
 449 cmd_efi_objcopy = $(OBJCOPY) -j .header -j .text -j .sdata -j .data -j \
 450                 .dynamic -j .dynsym  -j .rel* -j .rela* -j .reloc \
 451                 $(if $(EFI_TARGET),$(EFI_TARGET),-O binary) $^ $@
 452
 453 $(obj)/%.efi: $(obj)/%_efi.so
 454         $(call cmd,efi_objcopy)
 455
 456 KBUILD_EFILDFLAGS = -nostdlib -zexecstack -znocombreloc -znorelro
 457 KBUILD_EFILDFLAGS += $(call ld-option,--no-warn-rwx-segments)
 458 quiet_cmd_efi_ld = LD      $@
 459 cmd_efi_ld = $(LD) $(KBUILD_EFILDFLAGS) -T $(EFI_LDS_PATH) \
 460                 -shared -Bsymbolic -s $^ -o $@
 461
 462 EFI_LDS_PATH = $(srctree)/arch/$(ARCH)/lib/$(EFI_LDS)
 463
 464 $(obj)/efi_crt0.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_CRT0:.o=.S) FORCE
 465         $(call if_changed_dep,as_o_S)
 466
 467 $(obj)/efi_reloc.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_RELOC:.o=.c) $(recordmcount_source) FORCE
 468         $(call cmd,force_checksrc)
 469         $(call if_changed_rule,cc_o_c)
 470
 471 $(obj)/%_efi.so: $(obj)/%.o $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o
 472         $(call cmd,efi_ld)
 473
 474 targets += $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o
 475
 476 CFLAGS_REMOVE_efi_reloc.o := $(LTO_CFLAGS)
 477 CFLAGS_REMOVE_efi_freestanding.o := $(LTO_CFLAGS)
 478
 479 # ACPI
 480 # ---------------------------------------------------------------------------
 481 #
 482 # This first sends the file (typically dsdt.asl) through the preprocessor
 483 # resolve includes and any CONFIG options used. This produces dsdt.asl.tmp
 484 # which is pure ASL code. The Intel ASL (ACPI (Advanced Configuration and Power
 485 # Interface) Source Language compiler (iasl) then converts this ASL code into a
 486 # C file containing the hex data to build into U-Boot. This file is called
 487 # dsdt_generated.hex (despite us setting the prefix to .../dsdt_generated.asl.tmp)
 488 # so must be renamed to dsdt_generated.c for consumption by the build system.
 489 ASL_TMP = $(patsubst %.c,%.asl.tmp,$@)
 490
 491 quiet_cmd_acpi_c_asl= ASL     $<
 492 cmd_acpi_c_asl=         \
 493         $(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -D__ACPI__ \
 494                 -P $(UBOOTINCLUDE) -o $(ASL_TMP) $< && \
 495         iasl -p $@ -I $(srctree)/board/$(BOARDDIR) -tc $(ASL_TMP) \
 496                 $(if $(KBUILD_VERBOSE:1=), >/dev/null) && \
 497         mv $(patsubst %.c,%.hex,$@) $@
 498
 499 $(obj)/dsdt_generated.c:    $(src)/dsdt.asl
 500         $(call cmd,acpi_c_asl)
 501         $(Q)sed -i -e "s,dsdt_generated_aml_code,AmlCode," $@
 502
 503 # Bzip2
 504 # ---------------------------------------------------------------------------
 505
 506 # Bzip2 and LZMA do not include size in file... so we have to fake that;
 507 # append the size as a 32-bit littleendian number as gzip does.
 508 size_append = printf $(shell                                            \
 509 dec_size=0;                                                             \
 510 for F in $1; do                                                         \
 511         fsize=$$(stat -c "%s" $$F);                                     \
 512         dec_size=$$(expr $$dec_size + $$fsize);                         \
 513 done;                                                                   \
 514 printf "%08x\n" $$dec_size |                                            \
 515         sed 's/\(..\)/\1 /g' | {                                        \
 516                 read ch0 ch1 ch2 ch3;                                   \
 517                 for ch in $$ch3 $$ch2 $$ch1 $$ch0; do                   \
 518                         printf '%s%03o' '\\' $$((0x$$ch));              \
 519                 done;                                                   \
 520         }                                                               \
 521 )
 522
 523 quiet_cmd_bzip2 = BZIP2   $@
 524 cmd_bzip2 = (cat $(filter-out FORCE,$^) | \
 525         bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 526         (rm -f $@ ; false)
 527
 528 # Lzma
 529 # ---------------------------------------------------------------------------
 530
 531 quiet_cmd_lzma = LZMA    $@
 532 cmd_lzma = (cat $(filter-out FORCE,$^) | \
 533         lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 534         (rm -f $@ ; false)
 535
 536 quiet_cmd_lzo = LZO     $@
 537 cmd_lzo = (cat $(filter-out FORCE,$^) | \
 538         lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 539         (rm -f $@ ; false)
 540
 541 quiet_cmd_lz4 = LZ4     $@
 542 cmd_lz4 = (cat $(filter-out FORCE,$^) | \
 543         lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 544         (rm -f $@ ; false)
 545
 546 # U-Boot mkimage
 547 # ---------------------------------------------------------------------------
 548
 549 MKIMAGE := $(srctree)/scripts/mkuboot.sh
 550
 551 # SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces
 552 # the number of overrides in arch makefiles
 553 UIMAGE_ARCH ?= $(SRCARCH)
 554 UIMAGE_COMPRESSION ?= $(if $(2),$(2),none)
 555 UIMAGE_OPTS-y ?=
 556 UIMAGE_TYPE ?= kernel
 557 UIMAGE_LOADADDR ?= arch_must_set_this
 558 UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR)
 559 UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)'
 560 UIMAGE_IN ?= $<
 561 UIMAGE_OUT ?= $@
 562
 563 quiet_cmd_uimage = UIMAGE  $(UIMAGE_OUT)
 564       cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
 565                         -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \
 566                         -T $(UIMAGE_TYPE) \
 567                         -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \
 568                         -n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT)
 569
 570 # XZ
 571 # ---------------------------------------------------------------------------
 572 # Use xzkern to compress the kernel image and xzmisc to compress other things.
 573 #
 574 # xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
 575 # of the kernel decompressor. A BCJ filter is used if it is available for
 576 # the target architecture. xzkern also appends uncompressed size of the data
 577 # using size_append. The .xz format has the size information available at
 578 # the end of the file too, but it's in more complex format and it's good to
 579 # avoid changing the part of the boot code that reads the uncompressed size.
 580 # Note that the bytes added by size_append will make the xz tool think that
 581 # the file is corrupt. This is expected.
 582 #
 583 # xzmisc doesn't use size_append, so it can be used to create normal .xz
 584 # files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
 585 # big dictionary would increase the memory usage too much in the multi-call
 586 # decompression mode. A BCJ filter isn't used either.
 587 quiet_cmd_xzkern = XZKERN  $@
 588 cmd_xzkern = (cat $(filter-out FORCE,$^) | \
 589         sh $(srctree)/scripts/xz_wrap.sh && \
 590         $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 591         (rm -f $@ ; false)
 592
 593 quiet_cmd_xzmisc = XZMISC  $@
 594 cmd_xzmisc = (cat $(filter-out FORCE,$^) | \
 595         xz --check=crc32 --lzma2=dict=1MiB) > $@ || \
 596         (rm -f $@ ; false)
 597
 598 # Additional commands for U-Boot
 599 #
 600 # bin2c
 601 # ---------------------------------------------------------------------------
 602 quiet_cmd_bin2c = BIN2C   $@
 603       cmd_bin2c = $(objtree)/scripts/bin2c $2 < $< > $@
 604
 605 # mkimage
 606 # ---------------------------------------------------------------------------
 607 MKIMAGEOUTPUT ?= /dev/null
 608 quiet_cmd_mkimage = MKIMAGE $@
 609 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
 610         >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
 611
 612 # fdtgrep
 613 # ---------------------------------------------------------------------------
 614 # Pass the original device tree file through fdtgrep twice. The first pass
 615 # removes any unwanted nodes (i.e. those which don't have the
 616 # 'bootph-all' property and thus are not needed by SPL. The second
 617 # pass removes various unused properties from the remaining nodes.
 618 # The output is typically a much smaller device tree file.
 619
 620 ifdef CONFIG_OF_TAG_MIGRATE
 621 # Support the old tags for a migration period
 622 migrate_tpl := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl
 623 migrate_vpl := -b u-boot,dm-pre-reloc -b u-boot,dm-vpl
 624 migrate_spl := -b u-boot,dm-pre-reloc -b u-boot,dm-spl
 625 migrate_all := -P u-boot,dm-pre-reloc \
 626         -P u-boot,dm-spl -P u-boot,dm-tpl -P u-boot,dm-vpl
 627 endif
 628
 629 ifeq ($(CONFIG_VPL_BUILD),y)
 630 fdtgrep_props := -b bootph-all -b bootph-verify $(migrate_vpl)
 631 else
 632 ifeq ($(CONFIG_TPL_BUILD),y)
 633 fdtgrep_props := -b bootph-all -b bootph-pre-sram $(migrate_tpl)
 634 else
 635 fdtgrep_props := -b bootph-all -b bootph-pre-ram $(migrate_spl)
 636 endif
 637 endif
 638
 639 # This rule produces the .dtb for an SPL build.
 640 #
 641 # The first fdtgrep keeps nodes with the above properties (with -u ensuring that
 642 # the properties are implied in all parents of a matching node). The root node
 643 # is always included, along with /chosen and /config nodes. Referenced aliases
 644 # (i.e. properties in /aliases which point to an incldued node) are also
 645 # included.
 646 #
 647 # The second fdtgrep removes all bootph properties along with unused strings
 648 # and any properties in CONFIG_OF_SPL_REMOVE_PROPS
 649 quiet_cmd_fdtgrep = FDTGREP $@
 650       cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -u -RT $< \
 651                 -n /chosen -n /config -O dtb | \
 652         $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
 653                 -P bootph-all -P bootph-pre-ram -P bootph-pre-sram \
 654                 -P bootph-verify \
 655                 $(migrate_all) \
 656                 $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
 657
 658 # fdt_rm_props
 659 # ---------------------------------------------------------------------------
 660 # Pass the original device tree file through fdtgrep. This removes various
 661 # unused properties. The output is typically a smaller device tree file.
 662 quiet_cmd_fdt_rm_props = FDTGREP $@
 663         cmd_fdt_rm_props = cat $< | $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
 664                         $(addprefix -P ,$(subst $\",,$(CONFIG_OF_REMOVE_PROPS)))
 665
 666 # ASM offsets
 667 # ---------------------------------------------------------------------------
 668
 669 # Default sed regexp - multiline due to syntax constraints
 670 define sed-offsets
 671         "s:[[:space:]]*\.ascii[[:space:]]*\"\(.*\)\":\1:; \
 672         /^->/{s:->#\(.*\):/* \1 */:; \
 673         s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
 674         s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
 675         s:->::; p;}"
 676 endef
 677
 678 # Use filechk to avoid rebuilds when a header changes, but the resulting file
 679 # does not
 680 define filechk_offsets
 681         (set -e; \
 682          echo "#ifndef $2"; \
 683          echo "#define $2"; \
 684          echo "/*"; \
 685          echo " * DO NOT MODIFY."; \
 686          echo " *"; \
 687          echo " * This file was generated by Kbuild"; \
 688          echo " */"; \
 689          echo ""; \
 690          sed -ne $(sed-offsets); \
 691          echo ""; \
 692          echo "#endif" )
 693 endef