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 # Expand $(foo-objs) $(foo-y) etc. by replacing their individuals
  51 suffix-search = $(strip $(foreach s, $3, $($(1:%$(strip $2)=%$s))))
  52 # List composite targets that are constructed by combining other targets
  53 multi-search = $(sort $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -), $m)))
  54 # List primitive targets that are compiled from source files
  55 real-search = $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -), $(call suffix-search, $m, $2, $3), $m))
  56
  57 # if $(foo-objs) exists, foo.o is a composite object
  58 multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
  59 multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
  60 multi-used   := $(multi-used-y) $(multi-used-m)
  61 single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m)))
  62
  63 # Build list of the parts of our composite objects, our composite
  64 # objects depend on those (obviously)
  65 multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y)))
  66 multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)))
  67
  68 # Composite DTB (i.e. DTB constructed by overlay)
  69 multi-dtb-y := $(call multi-search, $(dtb-y), .dtb, -dtbs)
  70 # Primitive DTB compiled from *.dts
  71 real-dtb-y := $(call real-search, $(dtb-y), .dtb, -dtbs)
  72 # Base DTB that overlay is applied onto (each first word of $(*-dtbs) expansion)
  73 base-dtb-y := $(foreach m, $(multi-dtb-y), $(firstword $(call suffix-search, $m, .dtb, -dtbs)))
  74
  75 # $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
  76 # tell kbuild to descend
  77 subdir-obj-y := $(filter %/built-in.o, $(obj-y))
  78
  79 # Replace multi-part objects by their individual parts, look at local dir only
  80 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)
  81 real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
  82
  83 # Add subdir path
  84
  85 extra-y         := $(addprefix $(obj)/,$(extra-y))
  86 always-y        := $(addprefix $(obj)/,$(always-y))
  87 always          := $(addprefix $(obj)/,$(always))
  88 targets         := $(addprefix $(obj)/,$(targets))
  89 modorder        := $(addprefix $(obj)/,$(modorder))
  90 obj-y           := $(addprefix $(obj)/,$(obj-y))
  91 obj-m           := $(addprefix $(obj)/,$(obj-m))
  92 lib-y           := $(addprefix $(obj)/,$(lib-y))
  93 subdir-obj-y    := $(addprefix $(obj)/,$(subdir-obj-y))
  94 real-objs-y     := $(addprefix $(obj)/,$(real-objs-y))
  95 real-objs-m     := $(addprefix $(obj)/,$(real-objs-m))
  96 single-used-m   := $(addprefix $(obj)/,$(single-used-m))
  97 multi-used-y    := $(addprefix $(obj)/,$(multi-used-y))
  98 multi-used-m    := $(addprefix $(obj)/,$(multi-used-m))
  99 multi-objs-y    := $(addprefix $(obj)/,$(multi-objs-y))
 100 multi-objs-m    := $(addprefix $(obj)/,$(multi-objs-m))
 101 multi-dtb-y     := $(addprefix $(obj)/,$(multi-dtb-y))
 102 real-dtb-y      := $(addprefix $(obj)/,$(real-dtb-y))
 103 subdir-ym       := $(addprefix $(obj)/,$(subdir-ym))
 104
 105 # These flags are needed for modversions and compiling, so we define them here
 106 # already
 107 # $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will
 108 # end up in (or would, if it gets compiled in)
 109 # Note: Files that end up in two or more modules are compiled without the
 110 #       KBUILD_MODNAME definition. The reason is that any made-up name would
 111 #       differ in different configs.
 112 name-fix = $(squote)$(quote)$(subst $(comma),_,$(subst -,_,$1))$(quote)$(squote)
 113 basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget))
 114 modname_flags  = $(if $(filter 1,$(words $(modname))),\
 115                  -DKBUILD_MODNAME=$(call name-fix,$(modname)))
 116
 117 orig_c_flags   = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \
 118                  $(ccflags-y) $(CFLAGS_$(basetarget).o)
 119 _c_flags       = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
 120 orig_a_flags   = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \
 121                  $(asflags-y) $(AFLAGS_$(basetarget).o)
 122 _a_flags       = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags))
 123 _cpp_flags     = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
 124
 125 #
 126 # Enable gcov profiling flags for a file, directory or for all files depending
 127 # on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL
 128 # (in this order)
 129 #
 130 ifeq ($(CONFIG_GCOV_KERNEL),y)
 131 _c_flags += $(if $(patsubst n%,, \
 132                 $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \
 133                 $(CFLAGS_GCOV))
 134 endif
 135
 136 #
 137 # Enable address sanitizer flags for kernel except some files or directories
 138 # we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE)
 139 #
 140 ifeq ($(CONFIG_KASAN),y)
 141 _c_flags += $(if $(patsubst n%,, \
 142                 $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \
 143                 $(CFLAGS_KASAN))
 144 endif
 145
 146 # If building the kernel in a separate objtree expand all occurrences
 147 # of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
 148
 149 ifeq ($(KBUILD_SRC),)
 150 __c_flags       = $(_c_flags)
 151 __a_flags       = $(_a_flags)
 152 __cpp_flags     = $(_cpp_flags)
 153 else
 154
 155 # -I$(obj) locates generated .h files
 156 # $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files
 157 #   and locates generated .h files
 158 # FIXME: Replace both with specific CFLAGS* statements in the makefiles
 159 __c_flags       = $(if $(obj),$(call addtree,-I$(src)) -I$(obj)) \
 160                   $(call flags,_c_flags)
 161 __a_flags       = $(call flags,_a_flags)
 162 __cpp_flags     = $(call flags,_cpp_flags)
 163 endif
 164
 165 # Modified for U-Boot: LINUXINCLUDE -> UBOOTINCLUDE
 166 c_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
 167                  $(__c_flags) $(modkern_cflags)                           \
 168                  $(basename_flags) $(modname_flags)
 169
 170 a_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
 171                  $(__a_flags) $(modkern_aflags)
 172
 173 cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
 174                  $(__cpp_flags)
 175
 176 ld_flags       = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F))
 177
 178 # Try these files in order to find the U-Boot-specific .dtsi include file
 179 u_boot_dtsi_loc = $(srctree)/arch/$(ARCH)/dts/
 180
 181 u_boot_dtsi_options = $(strip $(wildcard $(u_boot_dtsi_loc)$(basename $(notdir $<))-u-boot.dtsi) \
 182         $(wildcard $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi) \
 183         $(wildcard $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi) \
 184         $(wildcard $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi) \
 185         $(wildcard $(u_boot_dtsi_loc)u-boot.dtsi))
 186
 187 u_boot_dtsi_options_raw = $(warning Automatic .dtsi inclusion: options: \
 188         $(u_boot_dtsi_loc)$(basename $(notdir $<))-u-boot.dtsi \
 189         $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi \
 190         $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi \
 191         $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi \
 192         $(u_boot_dtsi_loc)u-boot.dtsi ... \
 193         found: $(if $(u_boot_dtsi_options),"$(u_boot_dtsi_options)",nothing!))
 194
 195 # Uncomment for debugging
 196 # This shows all the files that were considered and the one that we chose.
 197 ifdef DEVICE_TREE_DEBUG
 198 u_boot_dtsi_options_debug = $(warning $(u_boot_dtsi_options_raw))
 199 endif
 200
 201 # We use the first match to be included
 202 dtsi_include_list = $(strip $(u_boot_dtsi_options_debug) \
 203         $(notdir $(firstword $(u_boot_dtsi_options))))
 204
 205 # Modified for U-Boot
 206 upstream_dtsi_include = $(addprefix -I, $(srctree)/dts/upstream/src/ \
 207         $(sort $(dir $(wildcard $(srctree)/dts/upstream/src/$(ARCH)/*/*))) \
 208         $(if (CONFIG_ARM64), \
 209                  $(sort $(dir $(wildcard $(srctree)/dts/upstream/src/arm64/*/*)))))
 210 dtc_cpp_flags  = -Wp,-MD,$(depfile).pre.tmp -nostdinc                    \
 211                  $(UBOOTINCLUDE)                                         \
 212                  -I$(dir $<)                                             \
 213                  -I$(u_boot_dtsi_loc)                                     \
 214                  -I$(srctree)/arch/$(ARCH)/dts/include                   \
 215                  -I$(srctree)/include                                    \
 216                  $(upstream_dtsi_include)                                \
 217                  -D__ASSEMBLY__                                          \
 218                  -undef -D__DTS__
 219
 220 # Finds the multi-part object the current object will be linked into
 221 modname-multi = $(sort $(foreach m,$(multi-used),\
 222                 $(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))
 223
 224 # Useful for describing the dependency of composite objects
 225 # Usage:
 226 #   $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add)
 227 define multi_depend
 228 $(foreach m, $(notdir $1), \
 229         $(eval $(obj)/$m: \
 230         $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
 231 endef
 232
 233 # LEX
 234 # ---------------------------------------------------------------------------
 235 quiet_cmd_flex = LEX     $@
 236       cmd_flex = $(LEX) -o$@ -L $<
 237
 238 $(obj)/%.lex.c: $(src)/%.l FORCE
 239         $(call if_changed,flex)
 240
 241 # YACC
 242 # ---------------------------------------------------------------------------
 243 quiet_cmd_bison = YACC    $@
 244       cmd_bison = $(YACC) -o$@ -t -l $<
 245
 246 $(obj)/%.tab.c: $(src)/%.y FORCE
 247         $(call if_changed,bison)
 248
 249 quiet_cmd_bison_h = YACC    $@
 250       cmd_bison_h = $(YACC) -o/dev/null --defines=$@ -t -l $<
 251
 252 $(obj)/%.tab.h: $(src)/%.y FORCE
 253         $(call if_changed,bison_h)
 254
 255 # Shipped files
 256 # ===========================================================================
 257
 258 quiet_cmd_shipped = SHIPPED $@
 259 cmd_shipped = cat $< > $@
 260
 261 $(obj)/%: $(src)/%_shipped
 262         $(call cmd,shipped)
 263
 264 # Commands useful for building a boot image
 265 # ===========================================================================
 266 #
 267 #       Use as following:
 268 #
 269 #       target: source(s) FORCE
 270 #               $(if_changed,ld/objcopy/gzip)
 271 #
 272 #       and add target to extra-y so that we know we have to
 273 #       read in the saved command line
 274
 275 # Linking
 276 # ---------------------------------------------------------------------------
 277
 278 quiet_cmd_ld = LD      $@
 279 cmd_ld = $(LD) $(ld_flags) $(filter-out FORCE,$^) -o $@
 280
 281 # Objcopy
 282 # ---------------------------------------------------------------------------
 283
 284 quiet_cmd_objcopy = OBJCOPY $@
 285 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
 286
 287 # Gzip
 288 # ---------------------------------------------------------------------------
 289
 290 quiet_cmd_gzip = GZIP    $@
 291 cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \
 292         (rm -f $@ ; false)
 293
 294 # DTC
 295 # ---------------------------------------------------------------------------
 296
 297 # Disable noisy checks by default
 298 ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
 299 DTC_FLAGS += -Wno-unit_address_vs_reg \
 300         -Wno-unit_address_format \
 301         -Wno-avoid_unnecessary_addr_size \
 302         -Wno-alias_paths \
 303         -Wno-graph_child_address \
 304         -Wno-graph_port \
 305         -Wno-unique_unit_address \
 306         -Wno-simple_bus_reg \
 307         -Wno-pci_device_reg
 308
 309 # U-Boot specific disables
 310 DTC_FLAGS += -Wno-pci_bridge \
 311         -Wno-pci_device_bus_num
 312 endif
 313
 314 ifneq ($(findstring 2,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
 315 DTC_FLAGS += -Wnode_name_chars_strict \
 316         -Wproperty_name_chars_strict
 317 endif
 318
 319 DTC_FLAGS += $(DTC_FLAGS_$(basetarget))
 320
 321 # Set -@ if the target is a base DTB that overlay is applied onto
 322 DTC_FLAGS += $(if $(filter $(patsubst $(obj)/%,%,$@), $(base-dtb-y)), -@)
 323
 324 # Generate an assembly file to wrap the output of the device tree compiler
 325 quiet_cmd_dt_S_dtb= DTBS    $@
 326 # Modified for U-Boot
 327 cmd_dt_S_dtb=                                           \
 328 (                                                       \
 329         echo '.section .dtb.init.rodata,"a"';           \
 330         echo '.balign 16';                              \
 331         echo '.global __dtb_$(subst -,_,$(*F))_begin';  \
 332         echo '__dtb_$(subst -,_,$(*F))_begin:';         \
 333         echo '.incbin "$<" ';                           \
 334         echo '__dtb_$(subst -,_,$(*F))_end:';           \
 335         echo '.global __dtb_$(subst -,_,$(*F))_end';    \
 336         echo '.balign 16';                              \
 337 ) > $@
 338
 339 $(obj)/%.dtb.S: $(obj)/%.dtb
 340         $(call cmd,dt_S_dtb)
 341
 342 # Generate an assembly file to wrap the output of the device tree compiler
 343 quiet_cmd_dt_S_dtbo= DTBOS   $@
 344 # Modified for U-Boot
 345 cmd_dt_S_dtbo=                                          \
 346 {                                                       \
 347         echo '.section .dtb.init.rodata,"a"';           \
 348         echo '.balign 16';                              \
 349         echo '.global __dtbo_$(subst -,_,$(*F))_begin'; \
 350         echo '__dtbo_$(subst -,_,$(*F))_begin:';        \
 351         echo '.incbin "$<" ';                           \
 352         echo '__dtbo_$(subst -,_,$(*F))_end:';          \
 353         echo '.global __dtbo_$(subst -,_,$(*F))_end';   \
 354         echo '.balign 16';                              \
 355 } > $@
 356
 357 $(obj)/%.dtbo.S: $(obj)/%.dtbo
 358         $(call cmd,dt_S_dtbo)
 359
 360 ifeq ($(CONFIG_OF_LIBFDT_OVERLAY),y)
 361 DTC_FLAGS += -@
 362 endif
 363
 364 quiet_cmd_dtc = DTC     $@
 365 # Modified for U-Boot
 366 # Bring in any U-Boot-specific include at the end of the file
 367 # And finally any custom .dtsi fragments specified with CONFIG_DEVICE_TREE_INCLUDES
 368 cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
 369         (cat $< > $(pre-tmp)); \
 370         $(foreach f,$(subst $(quote),,$(dtsi_include_list) $(CONFIG_DEVICE_TREE_INCLUDES)), \
 371           echo '$(pound)include "$(f)"' >> $(pre-tmp);) \
 372         $(HOSTCC) -E $(dtc_cpp_flags) -I$(obj) -x assembler-with-cpp -o $(dtc-tmp) $(pre-tmp) ; \
 373         $(DTC) -O dtb -o $@ -b 0 \
 374                 -i $(dir $<) -i $(u_boot_dtsi_loc) $(DTC_FLAGS) \
 375                 -d $(depfile).dtc.tmp $(dtc-tmp) || \
 376                 (echo "Check $(shell pwd)/$(pre-tmp) for errors" && false) \
 377                 ; \
 378         sed "s:$(pre-tmp):$(<):" $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
 379
 380 dtsi_include_list_deps := $(addprefix $(u_boot_dtsi_loc),$(subst $(quote),,$(dtsi_include_list)))
 381
 382 ifneq ($(CHECK_DTBS),)
 383 DT_CHECKER ?= dt-validate
 384 DT_CHECKER_FLAGS ?= $(if $(DT_SCHEMA_FILES),-l $(DT_SCHEMA_FILES),-m)
 385 DT_BINDING_DIR := dts/upstream/Bindings
 386 DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.json
 387
 388 quiet_cmd_dtb = DTC_CHK $@
 389       cmd_dtb = $(cmd_dtc) ; $(DT_CHECKER) $(DT_CHECKER_FLAGS) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@ || true
 390 else
 391 quiet_cmd_dtb = $(quiet_cmd_dtc)
 392       cmd_dtb = $(cmd_dtc)
 393 endif
 394
 395 $(obj)/%.dtb: $(src)/%.dts $(DTC) $(dtsi_include_list_deps) $(DT_TMP_SCHEMA) FORCE
 396         $(call if_changed_dep,dtb)
 397
 398 pre-tmp = $(subst $(comma),_,$(dot-target).pre.tmp)
 399 dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
 400
 401 # DTCO
 402 # ---------------------------------------------------------------------------
 403
 404 quiet_cmd_dtco = DTCO    $@
 405 # Rule for objects only; does not put specific u-boot include at the end
 406 # No generation of assembly file either
 407 # Modified for U-Boot
 408 cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
 409         $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
 410         $(DTC) -@ -O dtb -o $@ -b 0 \
 411                 -i $(dir $<) $(DTC_FLAGS) \
 412                 -d $(depfile).dtc.tmp $(dtc-tmp) ; \
 413         cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
 414
 415 $(obj)/%.dtbo: $(src)/%.dtso $(DTC) FORCE
 416         $(call if_changed_dep,dtco)
 417
 418 quiet_cmd_fdtoverlay = DTOVL   $@
 419            cmd_fdtoverlay = fdtoverlay -o $@ -i $(real-prereqs)
 420
 421 $(multi-dtb-y): FORCE
 422         $(call if_changed,fdtoverlay)
 423 $(call multi_depend, $(multi-dtb-y), .dtb, -dtbs)
 424
 425 # Fonts
 426 # ---------------------------------------------------------------------------
 427
 428 # Generate an assembly file to wrap the font data
 429 quiet_cmd_S_ttf= TTF     $@
 430 # Modified for U-Boot
 431 cmd_S_ttf=                                              \
 432 (                                                       \
 433         echo '.section .rodata.ttf.init,"a"';           \
 434         echo '.balign 16';                              \
 435         echo '.global __ttf_$(*F)_begin';               \
 436         echo '__ttf_$(*F)_begin:';                      \
 437         echo '.incbin "$<" ';                           \
 438         echo '__ttf_$(*F)_end:';                        \
 439         echo '.global __ttf_$(*F)_end';                 \
 440         echo '.balign 16';                              \
 441 ) > $@
 442
 443 $(obj)/%.S: $(src)/%.ttf
 444         $(call cmd,S_ttf)
 445
 446 # Splash logos
 447 # ---------------------------------------------------------------------------
 448
 449 # Generate an assembly file to wrap the splash data
 450 quiet_cmd_S_splash= TTF     $@
 451 # Modified for U-Boot
 452 cmd_S_splash=                                           \
 453 (                                                       \
 454         echo '.section .rodata.splash.init,"a"';                \
 455         echo '.balign 16';                              \
 456         echo '.global __splash_$(*F)_begin';            \
 457         echo '__splash_$(*F)_begin:';                   \
 458         echo '.incbin "$<" ';                           \
 459         echo '__splash_$(*F)_end:';                     \
 460         echo '.global __splash_$(*F)_end';                      \
 461         echo '.balign 16';                              \
 462 ) > $@
 463
 464 $(obj)/%.S: $(src)/%.bmp
 465         $(call cmd,S_splash)
 466
 467 # EFI applications
 468 # A Makefile target *.efi is built as EFI application.
 469 # A Makefile target *_efi.S wraps *.efi as built-in EFI application.
 470 # ---------------------------------------------------------------------------
 471
 472 # Generate an assembly file to wrap the EFI app
 473 cmd_S_efi=                                      \
 474 (                                               \
 475         echo '.section .rodata.$*.init,"a"';    \
 476         echo '.balign 16';                      \
 477         echo '.global __efi_$*_begin';          \
 478         echo '__efi_$*_begin:';                 \
 479         echo '.incbin "$<" ';                   \
 480         echo '__efi_$*_end:';                   \
 481         echo '.global __efi_$*_end';            \
 482         echo '.balign 16';                      \
 483 ) > $@
 484
 485 $(obj)/%_efi.S: $(obj)/%.efi
 486         $(call cmd,S_efi)
 487
 488 quiet_cmd_efi_objcopy = OBJCOPY $@
 489 cmd_efi_objcopy = $(OBJCOPY) -j .header -j .text -j .sdata -j .data \
 490                 -j .dynamic -j .dynstr  -j .dynsym -j .rel* -j .reloc \
 491                 $(if $(EFI_TARGET),$(EFI_TARGET),-O binary) $^ $@
 492
 493 $(obj)/%.efi: $(obj)/%_efi.so
 494         $(call cmd,efi_objcopy)
 495
 496 KBUILD_EFILDFLAGS = -nostdlib -zexecstack -znocombreloc -znorelro
 497 KBUILD_EFILDFLAGS += $(call ld-option,--no-warn-rwx-segments)
 498 quiet_cmd_efi_ld = LD      $@
 499 cmd_efi_ld = $(LD) $(KBUILD_EFILDFLAGS) -L $(srctree) -T $(EFI_LDS_PATH) \
 500                 -shared -Bsymbolic -s $^ $(PLATFORM_LIBGCC) -o $@
 501
 502 EFI_LDS_PATH = arch/$(ARCH)/lib/$(EFI_LDS)
 503
 504 $(obj)/efi_crt0.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_CRT0:.o=.S) FORCE
 505         $(call if_changed_dep,as_o_S)
 506
 507 $(obj)/efi_reloc.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_RELOC:.o=.c) $(recordmcount_source) FORCE
 508         $(call cmd,force_checksrc)
 509         $(call if_changed_rule,cc_o_c)
 510
 511 $(obj)/%_efi.so: $(obj)/%.o $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o
 512         $(call cmd,efi_ld)
 513
 514 targets += $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o
 515
 516 CFLAGS_REMOVE_efi_reloc.o := $(LTO_CFLAGS)
 517 CFLAGS_REMOVE_efi_freestanding.o := $(LTO_CFLAGS)
 518
 519 # ACPI
 520 # ---------------------------------------------------------------------------
 521 #
 522 # This first sends the file (typically dsdt.asl) through the preprocessor
 523 # resolve includes and any CONFIG options used. This produces dsdt.asl.tmp
 524 # which is pure ASL code. The Intel ASL (ACPI (Advanced Configuration and Power
 525 # Interface) Source Language compiler (iasl) then converts this ASL code into a
 526 # C file containing the hex data to build into U-Boot. This file is called
 527 # dsdt_generated.hex (despite us setting the prefix to .../dsdt_generated.asl.tmp)
 528 # so must be renamed to dsdt_generated.c for consumption by the build system.
 529 ASL_TMP = $(patsubst %.c,%.asl.tmp,$@)
 530
 531 quiet_cmd_acpi_c_asl= ASL     $<
 532 cmd_acpi_c_asl=         \
 533         $(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -D__ACPI__ \
 534                 -P $(UBOOTINCLUDE) -o $(ASL_TMP) $< && \
 535         iasl -p $@ -I $(srctree)/board/$(BOARDDIR) -tc $(ASL_TMP) \
 536                 $(if $(KBUILD_VERBOSE:1=), >/dev/null) && \
 537         mv $(patsubst %.c,%.hex,$@) $@
 538
 539 $(obj)/dsdt_generated.c:    $(src)/dsdt.asl
 540         $(call cmd,acpi_c_asl)
 541         $(Q)sed -i -e "s,dsdt_generated_aml_code,AmlCode," $@
 542
 543 # Bzip2
 544 # ---------------------------------------------------------------------------
 545
 546 # Bzip2 and LZMA do not include size in file... so we have to fake that;
 547 # append the size as a 32-bit littleendian number as gzip does.
 548 size_append = printf $(shell                                            \
 549 dec_size=0;                                                             \
 550 for F in $1; do                                                         \
 551         fsize=$$(stat -c "%s" $$F);                                     \
 552         dec_size=$$(expr $$dec_size + $$fsize);                         \
 553 done;                                                                   \
 554 printf "%08x\n" $$dec_size |                                            \
 555         sed 's/\(..\)/\1 /g' | {                                        \
 556                 read ch0 ch1 ch2 ch3;                                   \
 557                 for ch in $$ch3 $$ch2 $$ch1 $$ch0; do                   \
 558                         printf '%s%03o' '\\' $$((0x$$ch));              \
 559                 done;                                                   \
 560         }                                                               \
 561 )
 562
 563 quiet_cmd_bzip2 = BZIP2   $@
 564 cmd_bzip2 = (cat $(filter-out FORCE,$^) | \
 565         bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 566         (rm -f $@ ; false)
 567
 568 # Lzma
 569 # ---------------------------------------------------------------------------
 570
 571 quiet_cmd_lzma = LZMA    $@
 572 cmd_lzma = (cat $(filter-out FORCE,$^) | \
 573         lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 574         (rm -f $@ ; false)
 575
 576 quiet_cmd_lzo = LZO     $@
 577 cmd_lzo = (cat $(filter-out FORCE,$^) | \
 578         lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 579         (rm -f $@ ; false)
 580
 581 quiet_cmd_lz4 = LZ4     $@
 582 cmd_lz4 = (cat $(filter-out FORCE,$^) | \
 583         lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 584         (rm -f $@ ; false)
 585
 586 # U-Boot mkimage
 587 # ---------------------------------------------------------------------------
 588
 589 MKIMAGE := $(srctree)/scripts/mkuboot.sh
 590
 591 # SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces
 592 # the number of overrides in arch makefiles
 593 UIMAGE_ARCH ?= $(SRCARCH)
 594 UIMAGE_COMPRESSION ?= $(if $(2),$(2),none)
 595 UIMAGE_OPTS-y ?=
 596 UIMAGE_TYPE ?= kernel
 597 UIMAGE_LOADADDR ?= arch_must_set_this
 598 UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR)
 599 UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)'
 600 UIMAGE_IN ?= $<
 601 UIMAGE_OUT ?= $@
 602
 603 quiet_cmd_uimage = UIMAGE  $(UIMAGE_OUT)
 604       cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
 605                         -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \
 606                         -T $(UIMAGE_TYPE) \
 607                         -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \
 608                         -n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT)
 609
 610 # XZ
 611 # ---------------------------------------------------------------------------
 612 # Use xzkern to compress the kernel image and xzmisc to compress other things.
 613 #
 614 # xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
 615 # of the kernel decompressor. A BCJ filter is used if it is available for
 616 # the target architecture. xzkern also appends uncompressed size of the data
 617 # using size_append. The .xz format has the size information available at
 618 # the end of the file too, but it's in more complex format and it's good to
 619 # avoid changing the part of the boot code that reads the uncompressed size.
 620 # Note that the bytes added by size_append will make the xz tool think that
 621 # the file is corrupt. This is expected.
 622 #
 623 # xzmisc doesn't use size_append, so it can be used to create normal .xz
 624 # files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
 625 # big dictionary would increase the memory usage too much in the multi-call
 626 # decompression mode. A BCJ filter isn't used either.
 627 quiet_cmd_xzkern = XZKERN  $@
 628 cmd_xzkern = (cat $(filter-out FORCE,$^) | \
 629         sh $(srctree)/scripts/xz_wrap.sh && \
 630         $(call size_append, $(filter-out FORCE,$^))) > $@ || \
 631         (rm -f $@ ; false)
 632
 633 quiet_cmd_xzmisc = XZMISC  $@
 634 cmd_xzmisc = (cat $(filter-out FORCE,$^) | \
 635         xz --check=crc32 --lzma2=dict=1MiB) > $@ || \
 636         (rm -f $@ ; false)
 637
 638 # Additional commands for U-Boot
 639 #
 640 # bin2c
 641 # ---------------------------------------------------------------------------
 642 quiet_cmd_bin2c = BIN2C   $@
 643       cmd_bin2c = $(objtree)/scripts/bin2c $2 < $< > $@
 644
 645 # mkimage
 646 # ---------------------------------------------------------------------------
 647 MKIMAGEOUTPUT ?= /dev/null
 648 quiet_cmd_mkimage = MKIMAGE $@
 649 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
 650         >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
 651
 652 # fdtgrep
 653 # ---------------------------------------------------------------------------
 654 # Pass the original device tree file through fdtgrep twice. The first pass
 655 # removes any unwanted nodes (i.e. those which don't have the
 656 # 'bootph-all' property and thus are not needed by SPL. The second
 657 # pass removes various unused properties from the remaining nodes.
 658 # The output is typically a much smaller device tree file.
 659
 660 ifdef CONFIG_OF_TAG_MIGRATE
 661 # Support the old tags for a migration period
 662 migrate_tpl := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl
 663 migrate_vpl := -b u-boot,dm-pre-reloc -b u-boot,dm-vpl
 664 migrate_spl := -b u-boot,dm-pre-reloc -b u-boot,dm-spl
 665 migrate_all := -P u-boot,dm-pre-reloc \
 666         -P u-boot,dm-spl -P u-boot,dm-tpl -P u-boot,dm-vpl
 667 endif
 668
 669 ifeq ($(CONFIG_VPL_BUILD),y)
 670 fdtgrep_props := -b bootph-all -b bootph-verify $(migrate_vpl)
 671 else
 672 ifeq ($(CONFIG_TPL_BUILD),y)
 673 fdtgrep_props := -b bootph-all -b bootph-pre-sram $(migrate_tpl)
 674 else
 675 fdtgrep_props := -b bootph-all -b bootph-pre-ram $(migrate_spl)
 676 endif
 677 endif
 678
 679 # This rule produces the .dtb for an SPL build.
 680 #
 681 # The first fdtgrep keeps nodes with the above properties (with -u ensuring that
 682 # the properties are implied in all parents of a matching node). The root node
 683 # is always included, along with /chosen and /config nodes. Referenced aliases
 684 # (i.e. properties in /aliases which point to an incldued node) are also
 685 # included.
 686 #
 687 # The second fdtgrep removes all bootph properties along with unused strings
 688 # and any properties in CONFIG_OF_SPL_REMOVE_PROPS
 689 quiet_cmd_fdtgrep = FDTGREP $@
 690       cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -u -RT $< \
 691                 -n /chosen -n /config -O dtb | \
 692         $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
 693                 -P bootph-all -P bootph-pre-ram -P bootph-pre-sram \
 694                 -P bootph-verify -P bootph-some-ram \
 695                 $(migrate_all) \
 696                 $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
 697
 698 # fdt_rm_props
 699 # ---------------------------------------------------------------------------
 700 # Pass the original device tree file through fdtgrep. This removes various
 701 # unused properties. The output is typically a smaller device tree file.
 702 quiet_cmd_fdt_rm_props = FDTGREP $@
 703         cmd_fdt_rm_props = cat $< | $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
 704                         $(addprefix -P ,$(subst $\",,$(CONFIG_OF_REMOVE_PROPS)))
 705
 706 # ASM offsets
 707 # ---------------------------------------------------------------------------
 708
 709 # Default sed regexp - multiline due to syntax constraints
 710 define sed-offsets
 711         "s:[[:space:]]*\.ascii[[:space:]]*\"\(.*\)\":\1:; \
 712         /^->/{s:->#\(.*\):/* \1 */:; \
 713         s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
 714         s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
 715         s:->::; p;}"
 716 endef
 717
 718 # Use filechk to avoid rebuilds when a header changes, but the resulting file
 719 # does not
 720 define filechk_offsets
 721         (set -e; \
 722          echo "#ifndef $2"; \
 723          echo "#define $2"; \
 724          echo "/*"; \
 725          echo " * DO NOT MODIFY."; \
 726          echo " *"; \
 727          echo " * This file was generated by Kbuild"; \
 728          echo " */"; \
 729          echo ""; \
 730          sed -ne $(sed-offsets); \
 731          echo ""; \
 732          echo "#endif" )
 733 endef