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_loc = $(srctree)/arch/$(ARCH)/dts/
 163
 164 u_boot_dtsi_options = $(strip $(wildcard $(u_boot_dtsi_loc)$(basename $(notdir $<))-u-boot.dtsi) \
 165         $(wildcard $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi) \
 166         $(wildcard $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi) \
 167         $(wildcard $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi) \
 168         $(wildcard $(u_boot_dtsi_loc)u-boot.dtsi))
 169
 170 u_boot_dtsi_options_raw = $(warning Automatic .dtsi inclusion: options: \
 171         $(u_boot_dtsi_loc)$(basename $(notdir $<))-u-boot.dtsi \
 172         $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi \
 173         $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi \
 174         $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi \
 175         $(u_boot_dtsi_loc)u-boot.dtsi ... \
 176         found: $(if $(u_boot_dtsi_options),"$(u_boot_dtsi_options)",nothing!))
 177
 178 # Uncomment for debugging
 179 # This shows all the files that were considered and the one that we chose.
 180 ifdef DEVICE_TREE_DEBUG
 181 u_boot_dtsi_options_debug = $(warning $(u_boot_dtsi_options_raw))
 182 endif
 183
 184 # We use the first match to be included
 185 dtsi_include_list = $(strip $(u_boot_dtsi_options_debug) \
 186         $(notdir $(firstword $(u_boot_dtsi_options))))
 187
 188 # The CONFIG_DEVICE_TREE_INCLUDES also need to be included
 189 dtsi_include_list += $(CONFIG_DEVICE_TREE_INCLUDES)
 190
 191 # Modified for U-Boot
 192 upstream_dtsi_include = $(addprefix -I, $(srctree)/dts/upstream/src/ \
 193         $(sort $(dir $(wildcard $(srctree)/dts/upstream/src/$(ARCH)/*/*))) \
 194         $(if (CONFIG_ARM64), \
 195                  $(sort $(dir $(wildcard $(srctree)/dts/upstream/src/arm64/*/*)))))
 196 dtc_cpp_flags  = -Wp,-MD,$(depfile).pre.tmp -nostdinc                    \
 197                  $(UBOOTINCLUDE)                                         \
 198                  -I$(dir $<)                                             \
 199                  -I$(u_boot_dtsi_loc)                                     \
 200                  -I$(srctree)/arch/$(ARCH)/dts/include                   \
 201                  -I$(srctree)/include                                    \
 202                  $(upstream_dtsi_include)                                \
 203                  -D__ASSEMBLY__                                          \
 204                  -undef -D__DTS__
 205
 206 # Finds the multi-part object the current object will be linked into
 207 modname-multi = $(sort $(foreach m,$(multi-used),\
 208                 $(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))
 209
 210 # Useful for describing the dependency of composite objects
 211 # Usage:
 212 #   $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add)
 213 define multi_depend
 214 $(foreach m, $(notdir $1), \
 215         $(eval $(obj)/$m: \
 216         $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
 217 endef
 218
 219 # LEX
 220 # ---------------------------------------------------------------------------
 221 quiet_cmd_flex = LEX     $@
 222       cmd_flex = $(LEX) -o$@ -L $<
 223
 224 $(obj)/%.lex.c: $(src)/%.l FORCE
 225         $(call if_changed,flex)
 226
 227 # YACC
 228 # ---------------------------------------------------------------------------
 229 quiet_cmd_bison = YACC    $@
 230       cmd_bison = $(YACC) -o$@ -t -l $<
 231
 232 $(obj)/%.tab.c: $(src)/%.y FORCE
 233         $(call if_changed,bison)
 234
 235 quiet_cmd_bison_h = YACC    $@
 236       cmd_bison_h = $(YACC) -o/dev/null --defines=$@ -t -l $<
 237
 238 $(obj)/%.tab.h: $(src)/%.y FORCE
 239         $(call if_changed,bison_h)
 240
 241 # Shipped files
 242 # ===========================================================================
 243
 244 quiet_cmd_shipped = SHIPPED $@
 245 cmd_shipped = cat $< > $@
 246
 247 $(obj)/%: $(src)/%_shipped
 248         $(call cmd,shipped)
 249
 250 # Commands useful for building a boot image
 251 # ===========================================================================
 252 #
 253 #       Use as following:
 254 #
 255 #       target: source(s) FORCE
 256 #               $(if_changed,ld/objcopy/gzip)
 257 #
 258 #       and add target to extra-y so that we know we have to
 259 #       read in the saved command line
 260
 261 # Linking
 262 # ---------------------------------------------------------------------------
 263
 264 quiet_cmd_ld = LD      $@
 265 cmd_ld = $(LD) $(ld_flags) $(filter-out FORCE,$^) -o $@
 266
 267 # Objcopy
 268 # ---------------------------------------------------------------------------
 269
 270 quiet_cmd_objcopy = OBJCOPY $@
 271 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
 272
 273 # Gzip
 274 # ---------------------------------------------------------------------------
 275
 276 quiet_cmd_gzip = GZIP    $@
 277 cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \
 278         (rm -f $@ ; false)
 279
 280 # DTC
 281 # ---------------------------------------------------------------------------
 282
 283 # Disable noisy checks by default
 284 ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
 285 DTC_FLAGS += -Wno-unit_address_vs_reg \
 286         -Wno-unit_address_format \
 287         -Wno-avoid_unnecessary_addr_size \
 288         -Wno-alias_paths \
 289         -Wno-graph_child_address \
 290         -Wno-graph_port \
 291         -Wno-unique_unit_address \
 292         -Wno-simple_bus_reg \
 293         -Wno-pci_device_reg
 294
 295 # U-Boot specific disables
 296 DTC_FLAGS += -Wno-pci_bridge \
 297         -Wno-pci_device_bus_num
 298 endif
 299
 300 ifneq ($(findstring 2,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
 301 DTC_FLAGS += -Wnode_name_chars_strict \
 302         -Wproperty_name_chars_strict
 303 endif
 304
 305 DTC_FLAGS += $(DTC_FLAGS_$(basetarget))
 306
 307 # Generate an assembly file to wrap the output of the device tree compiler
 308 quiet_cmd_dt_S_dtb= DTBS    $@
 309 # Modified for U-Boot
 310 cmd_dt_S_dtb=                                           \
 311 (                                                       \
 312         echo '.section .dtb.init.rodata,"a"';           \
 313         echo '.balign 16';                              \
 314         echo '.global __dtb_$(subst -,_,$(*F))_begin';  \
 315         echo '__dtb_$(subst -,_,$(*F))_begin:';         \
 316         echo '.incbin "$<" ';                           \
 317         echo '__dtb_$(subst -,_,$(*F))_end:';           \
 318         echo '.global __dtb_$(subst -,_,$(*F))_end';    \
 319         echo '.balign 16';                              \
 320 ) > $@
 321
 322 $(obj)/%.dtb.S: $(obj)/%.dtb
 323         $(call cmd,dt_S_dtb)
 324
 325 # Generate an assembly file to wrap the output of the device tree compiler
 326 quiet_cmd_dt_S_dtbo= DTBOS   $@
 327 # Modified for U-Boot
 328 cmd_dt_S_dtbo=                                          \
 329 {                                                       \
 330         echo '.section .dtb.init.rodata,"a"';           \
 331         echo '.balign 16';                              \
 332         echo '.global __dtbo_$(subst -,_,$(*F))_begin'; \
 333         echo '__dtbo_$(subst -,_,$(*F))_begin:';        \
 334         echo '.incbin "$<" ';                           \
 335         echo '__dtbo_$(subst -,_,$(*F))_end:';          \
 336         echo '.global __dtbo_$(subst -,_,$(*F))_end';   \
 337         echo '.balign 16';                              \
 338 } > $@
 339
 340 $(obj)/%.dtbo.S: $(obj)/%.dtbo
 341         $(call cmd,dt_S_dtbo)
 342
 343 ifeq ($(CONFIG_OF_LIBFDT_OVERLAY),y)
 344 DTC_FLAGS += -@
 345 endif
 346
 347 quiet_cmd_dtc = DTC     $@
 348 # Modified for U-Boot
 349 # Bring in any U-Boot-specific include at the end of the file
 350 # And finally any custom .dtsi fragments specified with CONFIG_DEVICE_TREE_INCLUDES
 351 cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
 352         (cat $< > $(pre-tmp)); \
 353         $(foreach f,$(subst $(quote),,$(dtsi_include_list)), \
 354           echo '$(pound)include "$(f)"' >> $(pre-tmp);) \
 355         $(HOSTCC) -E $(dtc_cpp_flags) -I$(obj) -x assembler-with-cpp -o $(dtc-tmp) $(pre-tmp) ; \
 356         $(DTC) -O dtb -o $@ -b 0 \
 357                 -i $(dir $<) -i $(u_boot_dtsi_loc) $(DTC_FLAGS) \
 358                 -d $(depfile).dtc.tmp $(dtc-tmp) || \
 359                 (echo "Check $(shell pwd)/$(pre-tmp) for errors" && false) \
 360                 ; \
 361         sed "s:$(pre-tmp):$(<):" $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
 362
 363 capsule_esl_input_file=$(srctree)/lib/efi_loader/capsule_esl.dtsi.in
 364 capsule_crt_file=$(subst $(quote),,$(CONFIG_EFI_CAPSULE_CRT_FILE))
 365 capsule_esl_dtsi=.capsule_esl.dtsi
 366
 367 quiet_cmd_capsule_esl_gen = CAPSULE_ESL_GEN $@
 368 cmd_capsule_esl_gen = cert-to-efi-sig-list $< $@
 369
 370 $(obj)/capsule_esl_file: $(capsule_crt_file) FORCE
 371 ifeq ($(CONFIG_EFI_CAPSULE_CRT_FILE),"")
 372         $(error "CONFIG_EFI_CAPSULE_CRT_FILE is empty, EFI capsule authentication \
 373         public key must be specified when CONFIG_EFI_CAPSULE_AUTHENTICATE is enabled")
 374 else
 375         $(call cmd,capsule_esl_gen)
 376 endif
 377
 378 quiet_cmd_capsule_dtsi_gen = CAPSULE_DTSI_GEN $@
 379 cmd_capsule_dtsi_gen = \
 380         $(shell sed "s:ESL_BIN_FILE:$(abspath $<):" $(capsule_esl_input_file) > $@)
 381
 382 $(obj)/$(capsule_esl_dtsi): $(obj)/capsule_esl_file FORCE
 383         $(call cmd,capsule_dtsi_gen)
 384
 385 dtsi_include_list_deps := $(addprefix $(u_boot_dtsi_loc),$(subst $(quote),,$(dtsi_include_list)))
 386
 387 ifdef CONFIG_EFI_CAPSULE_AUTHENTICATE
 388 dtsi_include_list += $(capsule_esl_dtsi)
 389 dtsi_include_list_deps += $(obj)/$(capsule_esl_dtsi)
 390 endif
 391
 392 ifneq ($(CHECK_DTBS),)
 393 DT_CHECKER ?= dt-validate
 394 DT_CHECKER_FLAGS ?= $(if $(DT_SCHEMA_FILES),-l $(DT_SCHEMA_FILES),-m)
 395 DT_BINDING_DIR := dts/upstream/Bindings
 396 DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.json
 397
 398 quiet_cmd_dtb = DTC_CHK $@
 399       cmd_dtb = $(cmd_dtc) ; $(DT_CHECKER) $(DT_CHECKER_FLAGS) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@ || true
 400 else
 401 quiet_cmd_dtb = $(quiet_cmd_dtc)
 402       cmd_dtb = $(cmd_dtc)
 403 endif
 404
 405 $(obj)/%.dtb: $(src)/%.dts $(DTC) $(dtsi_include_list_deps) $(DT_TMP_SCHEMA) FORCE
 406         $(call if_changed_dep,dtb)
 407
 408 pre-tmp = $(subst $(comma),_,$(dot-target).pre.tmp)
 409 dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
 410
 411 # DTCO
 412 # ---------------------------------------------------------------------------
 413
 414 quiet_cmd_dtco = DTCO    $@
 415 # Rule for objects only; does not put specific u-boot include at the end
 416 # No generation of assembly file either
 417 # Modified for U-Boot
 418 cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
 419         $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
 420         $(DTC) -@ -O dtb -o $@ -b 0 \
 421                 -i $(dir $<) $(DTC_FLAGS) \
 422                 -d $(depfile).dtc.tmp $(dtc-tmp) ; \
 423         cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
 424
 425 $(obj)/%.dtbo: $(src)/%.dtso $(DTC) FORCE
 426         $(call if_changed_dep,dtco)
 427
 428 # Fonts
 429 # ---------------------------------------------------------------------------
 430
 431 # Generate an assembly file to wrap the font data
 432 quiet_cmd_S_ttf= TTF     $@
 433 # Modified for U-Boot
 434 cmd_S_ttf=                                              \
 435 (                                                       \
 436         echo '.section .rodata.ttf.init,"a"';           \
 437         echo '.balign 16';                              \
 438         echo '.global __ttf_$(*F)_begin';               \
 439         echo '__ttf_$(*F)_begin:';                      \
 440         echo '.incbin "$<" ';                           \
 441         echo '__ttf_$(*F)_end:';                        \
 442         echo '.global __ttf_$(*F)_end';                 \
 443         echo '.balign 16';                              \
 444 ) > $@
 445
 446 $(obj)/%.S: $(src)/%.ttf
 447         $(call cmd,S_ttf)
 448
 449 # Splash logos
 450 # ---------------------------------------------------------------------------
 451
 452 # Generate an assembly file to wrap the splash data
 453 quiet_cmd_S_splash= TTF     $@
 454 # Modified for U-Boot
 455 cmd_S_splash=                                           \
 456 (                                                       \
 457         echo '.section .rodata.splash.init,"a"';                \
 458         echo '.balign 16';                              \
 459         echo '.global __splash_$(*F)_begin';            \
 460         echo '__splash_$(*F)_begin:';                   \
 461         echo '.incbin "$<" ';                           \
 462         echo '__splash_$(*F)_end:';                     \
 463         echo '.global __splash_$(*F)_end';                      \
 464         echo '.balign 16';                              \
 465 ) > $@
 466
 467 $(obj)/%.S: $(src)/%.bmp
 468         $(call cmd,S_splash)
 469
 470 # EFI applications
 471 # A Makefile target *.efi is built as EFI application.
 472 # A Makefile target *_efi.S wraps *.efi as built-in EFI application.
 473 # ---------------------------------------------------------------------------
 474
 475 # Generate an assembly file to wrap the EFI app
 476 cmd_S_efi=                                      \
 477 (                                               \
 478         echo '.section .rodata.$*.init,"a"';    \
 479         echo '.balign 16';                      \
 480         echo '.global __efi_$*_begin';          \
 481         echo '__efi_$*_begin:';                 \
 482         echo '.incbin "$<" ';                   \
 483         echo '__efi_$*_end:';                   \
 484         echo '.global __efi_$*_end';            \
 485         echo '.balign 16';                      \
 486 ) > $@
 487
 488 $(obj)/%_efi.S: $(obj)/%.efi
 489         $(call cmd,S_efi)
 490
 491 quiet_cmd_efi_objcopy = OBJCOPY $@
 492 cmd_efi_objcopy = $(OBJCOPY) -j .header -j .text -j .sdata -j .data -j \
 493                 .dynamic -j .dynsym  -j .rel* -j .rela* -j .reloc \
 494                 $(if $(EFI_TARGET),$(EFI_TARGET),-O binary) $^ $@
 495
 496 $(obj)/%.efi: $(obj)/%_efi.so
 497         $(call cmd,efi_objcopy)
 498
 499 KBUILD_EFILDFLAGS = -nostdlib -zexecstack -znocombreloc -znorelro
 500 KBUILD_EFILDFLAGS += $(call ld-option,--no-warn-rwx-segments)
 501 quiet_cmd_efi_ld = LD      $@
 502 cmd_efi_ld = $(LD) $(KBUILD_EFILDFLAGS) -T $(EFI_LDS_PATH) \
 503                 -shared -Bsymbolic -s $^ -o $@
 504
 505 EFI_LDS_PATH = $(srctree)/arch/$(ARCH)/lib/$(EFI_LDS)
 506
 507 $(obj)/efi_crt0.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_CRT0:.o=.S) FORCE
 508         $(call if_changed_dep,as_o_S)
 509
 510 $(obj)/efi_reloc.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_RELOC:.o=.c) $(recordmcount_source) FORCE
 511         $(call cmd,force_checksrc)
 512         $(call if_changed_rule,cc_o_c)
 513
 514 $(obj)/%_efi.so: $(obj)/%.o $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o
 515         $(call cmd,efi_ld)
 516
 517 targets += $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o
 518
 519 CFLAGS_REMOVE_efi_reloc.o := $(LTO_CFLAGS)
 520 CFLAGS_REMOVE_efi_freestanding.o := $(LTO_CFLAGS)
 521
 522 # ACPI
 523 # ---------------------------------------------------------------------------
 524 #
 525 # This first sends the file (typically dsdt.asl) through the preprocessor
 526 # resolve includes and any CONFIG options used. This produces dsdt.asl.tmp
 527 # which is pure ASL code. The Intel ASL (ACPI (Advanced Configuration and Power
 528 # Interface) Source Language compiler (iasl) then converts this ASL code into a
 529 # C file containing the hex data to build into U-Boot. This file is called
 530 # dsdt_generated.hex (despite us setting the prefix to .../dsdt_generated.asl.tmp)
 531 # so must be renamed to dsdt_generated.c for consumption by the build system.
 532 ASL_TMP = $(patsubst %.c,%.asl.tmp,$@)
 533
 534 quiet_cmd_acpi_c_asl= ASL     $<
 535 cmd_acpi_c_asl=         \
 536         $(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -D__ACPI__ \
 537                 -P $(UBOOTINCLUDE) -o $(ASL_TMP) $< && \
 538         iasl -p $@ -I $(srctree)/board/$(BOARDDIR) -tc $(ASL_TMP) \
 539                 $(if $(KBUILD_VERBOSE:1=), >/dev/null) && \
 540         mv $(patsubst %.c,%.hex,$@) $@
 541
 542 $(obj)/dsdt_generated.c:    $(src)/dsdt.asl
 543         $(call cmd,acpi_c_asl)
 544         $(Q)sed -i -e "s,dsdt_generated_aml_code,AmlCode," $@
 545
 546 # Bzip2
 547 # ---------------------------------------------------------------------------
 548
 549 # Bzip2 and LZMA do not include size in file... so we have to fake that;
 550 # append the size as a 32-bit littleendian number as gzip does.
 551 size_append = printf $(shell                                            \
 552 dec_size=0;                                                             \
 553 for F in $1; do                                                         \
 554         fsize=$$(stat -c "%s" $$F);                                     \
 555         dec_size=$$(expr $$dec_size + $$fsize);                         \
 556 done;                                                                   \
 557 printf "%08x\n" $$dec_size |                                            \
 558         sed 's/\(..\)/\1 /g' | {                                        \
 559                 read ch0 ch1 ch2 ch3;                                   \
 560                 for ch in $$ch3 $$ch2 $$ch1 $$ch0; do                   \
 561                         printf '%s%03o' '\\' $$((0x$$ch));              \
 562                 done;                                                   \
 563         }                                                               \
 564 )
 565
 566 quiet_cmd_bzip2 = BZIP2   $@
 567 cmd_bzip2 = (cat $(filter-out FORCE,$^) | \
 568         bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 569         (rm -f $@ ; false)
 570
 571 # Lzma
 572 # ---------------------------------------------------------------------------
 573
 574 quiet_cmd_lzma = LZMA    $@
 575 cmd_lzma = (cat $(filter-out FORCE,$^) | \
 576         lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 577         (rm -f $@ ; false)
 578
 579 quiet_cmd_lzo = LZO     $@
 580 cmd_lzo = (cat $(filter-out FORCE,$^) | \
 581         lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 582         (rm -f $@ ; false)
 583
 584 quiet_cmd_lz4 = LZ4     $@
 585 cmd_lz4 = (cat $(filter-out FORCE,$^) | \
 586         lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 587         (rm -f $@ ; false)
 588
 589 # U-Boot mkimage
 590 # ---------------------------------------------------------------------------
 591
 592 MKIMAGE := $(srctree)/scripts/mkuboot.sh
 593
 594 # SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces
 595 # the number of overrides in arch makefiles
 596 UIMAGE_ARCH ?= $(SRCARCH)
 597 UIMAGE_COMPRESSION ?= $(if $(2),$(2),none)
 598 UIMAGE_OPTS-y ?=
 599 UIMAGE_TYPE ?= kernel
 600 UIMAGE_LOADADDR ?= arch_must_set_this
 601 UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR)
 602 UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)'
 603 UIMAGE_IN ?= $<
 604 UIMAGE_OUT ?= $@
 605
 606 quiet_cmd_uimage = UIMAGE  $(UIMAGE_OUT)
 607       cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
 608                         -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \
 609                         -T $(UIMAGE_TYPE) \
 610                         -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \
 611                         -n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT)
 612
 613 # XZ
 614 # ---------------------------------------------------------------------------
 615 # Use xzkern to compress the kernel image and xzmisc to compress other things.
 616 #
 617 # xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
 618 # of the kernel decompressor. A BCJ filter is used if it is available for
 619 # the target architecture. xzkern also appends uncompressed size of the data
 620 # using size_append. The .xz format has the size information available at
 621 # the end of the file too, but it's in more complex format and it's good to
 622 # avoid changing the part of the boot code that reads the uncompressed size.
 623 # Note that the bytes added by size_append will make the xz tool think that
 624 # the file is corrupt. This is expected.
 625 #
 626 # xzmisc doesn't use size_append, so it can be used to create normal .xz
 627 # files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
 628 # big dictionary would increase the memory usage too much in the multi-call
 629 # decompression mode. A BCJ filter isn't used either.
 630 quiet_cmd_xzkern = XZKERN  $@
 631 cmd_xzkern = (cat $(filter-out FORCE,$^) | \
 632         sh $(srctree)/scripts/xz_wrap.sh && \
 633         $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 634         (rm -f $@ ; false)
 635
 636 quiet_cmd_xzmisc = XZMISC  $@
 637 cmd_xzmisc = (cat $(filter-out FORCE,$^) | \
 638         xz --check=crc32 --lzma2=dict=1MiB) > $@ || \
 639         (rm -f $@ ; false)
 640
 641 # Additional commands for U-Boot
 642 #
 643 # bin2c
 644 # ---------------------------------------------------------------------------
 645 quiet_cmd_bin2c = BIN2C   $@
 646       cmd_bin2c = $(objtree)/scripts/bin2c $2 < $< > $@
 647
 648 # mkimage
 649 # ---------------------------------------------------------------------------
 650 MKIMAGEOUTPUT ?= /dev/null
 651 quiet_cmd_mkimage = MKIMAGE $@
 652 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
 653         >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
 654
 655 # fdtgrep
 656 # ---------------------------------------------------------------------------
 657 # Pass the original device tree file through fdtgrep twice. The first pass
 658 # removes any unwanted nodes (i.e. those which don't have the
 659 # 'bootph-all' property and thus are not needed by SPL. The second
 660 # pass removes various unused properties from the remaining nodes.
 661 # The output is typically a much smaller device tree file.
 662
 663 ifdef CONFIG_OF_TAG_MIGRATE
 664 # Support the old tags for a migration period
 665 migrate_tpl := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl
 666 migrate_vpl := -b u-boot,dm-pre-reloc -b u-boot,dm-vpl
 667 migrate_spl := -b u-boot,dm-pre-reloc -b u-boot,dm-spl
 668 migrate_all := -P u-boot,dm-pre-reloc \
 669         -P u-boot,dm-spl -P u-boot,dm-tpl -P u-boot,dm-vpl
 670 endif
 671
 672 ifeq ($(CONFIG_VPL_BUILD),y)
 673 fdtgrep_props := -b bootph-all -b bootph-verify $(migrate_vpl)
 674 else
 675 ifeq ($(CONFIG_TPL_BUILD),y)
 676 fdtgrep_props := -b bootph-all -b bootph-pre-sram $(migrate_tpl)
 677 else
 678 fdtgrep_props := -b bootph-all -b bootph-pre-ram $(migrate_spl)
 679 endif
 680 endif
 681
 682 # This rule produces the .dtb for an SPL build.
 683 #
 684 # The first fdtgrep keeps nodes with the above properties (with -u ensuring that
 685 # the properties are implied in all parents of a matching node). The root node
 686 # is always included, along with /chosen and /config nodes. Referenced aliases
 687 # (i.e. properties in /aliases which point to an incldued node) are also
 688 # included.
 689 #
 690 # The second fdtgrep removes all bootph properties along with unused strings
 691 # and any properties in CONFIG_OF_SPL_REMOVE_PROPS
 692 quiet_cmd_fdtgrep = FDTGREP $@
 693       cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -u -RT $< \
 694                 -n /chosen -n /config -O dtb | \
 695         $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
 696                 -P bootph-all -P bootph-pre-ram -P bootph-pre-sram \
 697                 -P bootph-verify -P bootph-some-ram \
 698                 $(migrate_all) \
 699                 $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
 700
 701 # fdt_rm_props
 702 # ---------------------------------------------------------------------------
 703 # Pass the original device tree file through fdtgrep. This removes various
 704 # unused properties. The output is typically a smaller device tree file.
 705 quiet_cmd_fdt_rm_props = FDTGREP $@
 706         cmd_fdt_rm_props = cat $< | $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
 707                         $(addprefix -P ,$(subst $\",,$(CONFIG_OF_REMOVE_PROPS)))
 708
 709 # ASM offsets
 710 # ---------------------------------------------------------------------------
 711
 712 # Default sed regexp - multiline due to syntax constraints
 713 define sed-offsets
 714         "s:[[:space:]]*\.ascii[[:space:]]*\"\(.*\)\":\1:; \
 715         /^->/{s:->#\(.*\):/* \1 */:; \
 716         s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
 717         s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
 718         s:->::; p;}"
 719 endef
 720
 721 # Use filechk to avoid rebuilds when a header changes, but the resulting file
 722 # does not
 723 define filechk_offsets
 724         (set -e; \
 725          echo "#ifndef $2"; \
 726          echo "#define $2"; \
 727          echo "/*"; \
 728          echo " * DO NOT MODIFY."; \
 729          echo " *"; \
 730          echo " * This file was generated by Kbuild"; \
 731          echo " */"; \
 732          echo ""; \
 733          sed -ne $(sed-offsets); \
 734          echo ""; \
 735          echo "#endif" )
 736 endef