| | 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 |
projects / thirdparty / u-boot.git / blame_incremental