| | 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:.o=-m))), $(m)))) |
| | 53 | multi-used := $(multi-used-y) $(multi-used-m) |
| | 54 | single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m))) |
| | 55 | |
| | 56 | # Build list of the parts of our composite objects, our composite |
| | 57 | # objects depend on those (obviously) |
| | 58 | multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y))) |
| | 59 | multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y))) |
| | 60 | multi-objs := $(multi-objs-y) $(multi-objs-m) |
| | 61 | |
| | 62 | # $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to |
| | 63 | # tell kbuild to descend |
| | 64 | subdir-obj-y := $(filter %/built-in.o, $(obj-y)) |
| | 65 | |
| | 66 | # $(obj-dirs) is a list of directories that contain object files |
| | 67 | obj-dirs := $(dir $(multi-objs) $(obj-y)) |
| | 68 | |
| | 69 | # Replace multi-part objects by their individual parts, look at local dir only |
| | 70 | real-objs-y := $(foreach m, $(filter-out $(subdir-obj-y), $(obj-y)), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m))) $(extra-y) |
| | 71 | real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m))) |
| | 72 | |
| | 73 | # Add subdir path |
| | 74 | |
| | 75 | extra-y := $(addprefix $(obj)/,$(extra-y)) |
| | 76 | always := $(addprefix $(obj)/,$(always)) |
| | 77 | targets := $(addprefix $(obj)/,$(targets)) |
| | 78 | modorder := $(addprefix $(obj)/,$(modorder)) |
| | 79 | obj-y := $(addprefix $(obj)/,$(obj-y)) |
| | 80 | obj-m := $(addprefix $(obj)/,$(obj-m)) |
| | 81 | lib-y := $(addprefix $(obj)/,$(lib-y)) |
| | 82 | subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y)) |
| | 83 | real-objs-y := $(addprefix $(obj)/,$(real-objs-y)) |
| | 84 | real-objs-m := $(addprefix $(obj)/,$(real-objs-m)) |
| | 85 | single-used-m := $(addprefix $(obj)/,$(single-used-m)) |
| | 86 | multi-used-y := $(addprefix $(obj)/,$(multi-used-y)) |
| | 87 | multi-used-m := $(addprefix $(obj)/,$(multi-used-m)) |
| | 88 | multi-objs-y := $(addprefix $(obj)/,$(multi-objs-y)) |
| | 89 | multi-objs-m := $(addprefix $(obj)/,$(multi-objs-m)) |
| | 90 | subdir-ym := $(addprefix $(obj)/,$(subdir-ym)) |
| | 91 | obj-dirs := $(addprefix $(obj)/,$(obj-dirs)) |
| | 92 | |
| | 93 | # These flags are needed for modversions and compiling, so we define them here |
| | 94 | # already |
| | 95 | # $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will |
| | 96 | # end up in (or would, if it gets compiled in) |
| | 97 | # Note: Files that end up in two or more modules are compiled without the |
| | 98 | # KBUILD_MODNAME definition. The reason is that any made-up name would |
| | 99 | # differ in different configs. |
| | 100 | name-fix = $(squote)$(quote)$(subst $(comma),_,$(subst -,_,$1))$(quote)$(squote) |
| | 101 | basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget)) |
| | 102 | modname_flags = $(if $(filter 1,$(words $(modname))),\ |
| | 103 | -DKBUILD_MODNAME=$(call name-fix,$(modname))) |
| | 104 | |
| | 105 | orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \ |
| | 106 | $(ccflags-y) $(CFLAGS_$(basetarget).o) |
| | 107 | _c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags)) |
| | 108 | orig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \ |
| | 109 | $(asflags-y) $(AFLAGS_$(basetarget).o) |
| | 110 | _a_flags = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags)) |
| | 111 | _cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F)) |
| | 112 | |
| | 113 | # |
| | 114 | # Enable gcov profiling flags for a file, directory or for all files depending |
| | 115 | # on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL |
| | 116 | # (in this order) |
| | 117 | # |
| | 118 | ifeq ($(CONFIG_GCOV_KERNEL),y) |
| | 119 | _c_flags += $(if $(patsubst n%,, \ |
| | 120 | $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \ |
| | 121 | $(CFLAGS_GCOV)) |
| | 122 | endif |
| | 123 | |
| | 124 | # |
| | 125 | # Enable address sanitizer flags for kernel except some files or directories |
| | 126 | # we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE) |
| | 127 | # |
| | 128 | ifeq ($(CONFIG_KASAN),y) |
| | 129 | _c_flags += $(if $(patsubst n%,, \ |
| | 130 | $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \ |
| | 131 | $(CFLAGS_KASAN), $(CFLAGS_KASAN_NOSANITIZE)) |
| | 132 | endif |
| | 133 | |
| | 134 | ifeq ($(CONFIG_UBSAN),y) |
| | 135 | _c_flags += $(if $(patsubst n%,, \ |
| | 136 | $(UBSAN_SANITIZE_$(basetarget).o)$(UBSAN_SANITIZE)$(CONFIG_UBSAN_SANITIZE_ALL)), \ |
| | 137 | $(CFLAGS_UBSAN)) |
| | 138 | endif |
| | 139 | |
| | 140 | ifeq ($(CONFIG_KCOV),y) |
| | 141 | _c_flags += $(if $(patsubst n%,, \ |
| | 142 | $(KCOV_INSTRUMENT_$(basetarget).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \ |
| | 143 | $(CFLAGS_KCOV)) |
| | 144 | endif |
| | 145 | |
| | 146 | # If building the kernel in a separate objtree expand all occurrences |
| | 147 | # of -Idir to -I$(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 = $(call flags,_cpp_flags) |
| | 163 | endif |
| | 164 | |
| | 165 | c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
| | 166 | $(__c_flags) $(modkern_cflags) \ |
| | 167 | $(basename_flags) $(modname_flags) |
| | 168 | |
| | 169 | a_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
| | 170 | $(__a_flags) $(modkern_aflags) |
| | 171 | |
| | 172 | cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
| | 173 | $(__cpp_flags) |
| | 174 | |
| | 175 | ld_flags = $(LDFLAGS) $(ldflags-y) |
| | 176 | |
| | 177 | DTC_INCLUDE := $(srctree)/scripts/dtc/include-prefixes |
| | 178 | |
| | 179 | dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \ |
| | 180 | $(addprefix -I,$(DTC_INCLUDE)) \ |
| | 181 | -undef -D__DTS__ |
| | 182 | |
| | 183 | # Finds the multi-part object the current object will be linked into |
| | 184 | modname-multi = $(sort $(foreach m,$(multi-used),\ |
| | 185 | $(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=)))) |
| | 186 | |
| | 187 | # Useful for describing the dependency of composite objects |
| | 188 | # Usage: |
| | 189 | # $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add) |
| | 190 | define multi_depend |
| | 191 | $(foreach m, $(notdir $1), \ |
| | 192 | $(eval $(obj)/$m: \ |
| | 193 | $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s))))))) |
| | 194 | endef |
| | 195 | |
| | 196 | ifdef REGENERATE_PARSERS |
| | 197 | |
| | 198 | # LEX |
| | 199 | # --------------------------------------------------------------------------- |
| | 200 | LEX_PREFIX = $(if $(LEX_PREFIX_${baseprereq}),$(LEX_PREFIX_${baseprereq}),yy) |
| | 201 | |
| | 202 | quiet_cmd_flex = LEX $@ |
| | 203 | cmd_flex = flex -o$@ -L -P $(LEX_PREFIX) $< |
| | 204 | |
| | 205 | .PRECIOUS: $(src)/%.lex.c_shipped |
| | 206 | $(src)/%.lex.c_shipped: $(src)/%.l |
| | 207 | $(call cmd,flex) |
| | 208 | |
| | 209 | # YACC |
| | 210 | # --------------------------------------------------------------------------- |
| | 211 | YACC_PREFIX = $(if $(YACC_PREFIX_${baseprereq}),$(YACC_PREFIX_${baseprereq}),yy) |
| | 212 | |
| | 213 | quiet_cmd_bison = YACC $@ |
| | 214 | cmd_bison = bison -o$@ -t -l -p $(YACC_PREFIX) $< |
| | 215 | |
| | 216 | .PRECIOUS: $(src)/%.tab.c_shipped |
| | 217 | $(src)/%.tab.c_shipped: $(src)/%.y |
| | 218 | $(call cmd,bison) |
| | 219 | |
| | 220 | quiet_cmd_bison_h = YACC $@ |
| | 221 | cmd_bison_h = bison -o/dev/null --defines=$@ -t -l -p $(YACC_PREFIX) $< |
| | 222 | |
| | 223 | .PRECIOUS: $(src)/%.tab.h_shipped |
| | 224 | $(src)/%.tab.h_shipped: $(src)/%.y |
| | 225 | $(call cmd,bison_h) |
| | 226 | |
| | 227 | endif |
| | 228 | |
| | 229 | # Shipped files |
| | 230 | # =========================================================================== |
| | 231 | |
| | 232 | quiet_cmd_shipped = SHIPPED $@ |
| | 233 | cmd_shipped = cat $< > $@ |
| | 234 | |
| | 235 | $(obj)/%: $(src)/%_shipped |
| | 236 | $(call cmd,shipped) |
| | 237 | |
| | 238 | # Commands useful for building a boot image |
| | 239 | # =========================================================================== |
| | 240 | # |
| | 241 | # Use as following: |
| | 242 | # |
| | 243 | # target: source(s) FORCE |
| | 244 | # $(if_changed,ld/objcopy/gzip) |
| | 245 | # |
| | 246 | # and add target to extra-y so that we know we have to |
| | 247 | # read in the saved command line |
| | 248 | |
| | 249 | # Linking |
| | 250 | # --------------------------------------------------------------------------- |
| | 251 | |
| | 252 | quiet_cmd_ld = LD $@ |
| | 253 | cmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \ |
| | 254 | $(filter-out FORCE,$^) -o $@ |
| | 255 | |
| | 256 | # Objcopy |
| | 257 | # --------------------------------------------------------------------------- |
| | 258 | |
| | 259 | quiet_cmd_objcopy = OBJCOPY $@ |
| | 260 | cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ |
| | 261 | |
| | 262 | # Gzip |
| | 263 | # --------------------------------------------------------------------------- |
| | 264 | |
| | 265 | quiet_cmd_gzip = GZIP $@ |
| | 266 | cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \ |
| | 267 | (rm -f $@ ; false) |
| | 268 | |
| | 269 | # DTC |
| | 270 | # --------------------------------------------------------------------------- |
| | 271 | DTC ?= $(objtree)/scripts/dtc/dtc |
| | 272 | |
| | 273 | # Overlay support |
| | 274 | DTC_FLAGS += -@ |
| | 275 | |
| | 276 | # Disable noisy checks by default |
| | 277 | ifeq ($(KBUILD_ENABLE_EXTRA_GCC_CHECKS),) |
| | 278 | DTC_FLAGS += -Wno-unit_address_vs_reg \ |
| | 279 | -Wno-avoid_default_addr_size \ |
| | 280 | -Wno-reg_format |
| | 281 | endif |
| | 282 | |
| | 283 | # Generate an assembly file to wrap the output of the device tree compiler |
| | 284 | quiet_cmd_dt_S_dtb= DTB $@ |
| | 285 | cmd_dt_S_dtb= \ |
| | 286 | ( \ |
| | 287 | echo '\#include <asm-generic/vmlinux.lds.h>'; \ |
| | 288 | echo '.section .dtb.init.rodata,"a"'; \ |
| | 289 | echo '.balign STRUCT_ALIGNMENT'; \ |
| | 290 | echo '.global __dtb_$(subst -,_,$(*F))_begin'; \ |
| | 291 | echo '__dtb_$(subst -,_,$(*F))_begin:'; \ |
| | 292 | echo '.incbin "$<" '; \ |
| | 293 | echo '__dtb_$(subst -,_,$(*F))_end:'; \ |
| | 294 | echo '.global __dtb_$(subst -,_,$(*F))_end'; \ |
| | 295 | echo '.balign STRUCT_ALIGNMENT'; \ |
| | 296 | ) > $@ |
| | 297 | |
| | 298 | $(obj)/%.dtb.S: $(obj)/%.dtb |
| | 299 | $(call cmd,dt_S_dtb) |
| | 300 | |
| | 301 | quiet_cmd_dtc = DTC $@ |
| | 302 | cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \ |
| | 303 | $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ |
| | 304 | $(DTC) -O dtb -o $@ -b 0 \ |
| | 305 | $(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \ |
| | 306 | -d $(depfile).dtc.tmp $(dtc-tmp) ; \ |
| | 307 | cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) |
| | 308 | |
| | 309 | $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE |
| | 310 | $(call if_changed_dep,dtc) |
| | 311 | |
| | 312 | $(obj)/%.dtbo: $(src)/%.dts $(DTC) FORCE |
| | 313 | $(call if_changed_dep,dtc) |
| | 314 | |
| | 315 | dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp) |
| | 316 | |
| | 317 | # cat |
| | 318 | # --------------------------------------------------------------------------- |
| | 319 | # Concatentate multiple files together |
| | 320 | quiet_cmd_cat = CAT $@ |
| | 321 | cmd_cat = (cat $(filter-out FORCE,$^) > $@) || (rm -f $@; false) |
| | 322 | |
| | 323 | # Bzip2 |
| | 324 | # --------------------------------------------------------------------------- |
| | 325 | |
| | 326 | # Bzip2 and LZMA do not include size in file... so we have to fake that; |
| | 327 | # append the size as a 32-bit littleendian number as gzip does. |
| | 328 | size_append = printf $(shell \ |
| | 329 | dec_size=0; \ |
| | 330 | for F in $1; do \ |
| | 331 | fsize=$$(stat -c "%s" $$F); \ |
| | 332 | dec_size=$$(expr $$dec_size + $$fsize); \ |
| | 333 | done; \ |
| | 334 | printf "%08x\n" $$dec_size | \ |
| | 335 | sed 's/\(..\)/\1 /g' | { \ |
| | 336 | read ch0 ch1 ch2 ch3; \ |
| | 337 | for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \ |
| | 338 | printf '%s%03o' '\\' $$((0x$$ch)); \ |
| | 339 | done; \ |
| | 340 | } \ |
| | 341 | ) |
| | 342 | |
| | 343 | quiet_cmd_bzip2 = BZIP2 $@ |
| | 344 | cmd_bzip2 = (cat $(filter-out FORCE,$^) | \ |
| | 345 | bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ |
| | 346 | (rm -f $@ ; false) |
| | 347 | |
| | 348 | # Lzma |
| | 349 | # --------------------------------------------------------------------------- |
| | 350 | |
| | 351 | quiet_cmd_lzma = LZMA $@ |
| | 352 | cmd_lzma = (cat $(filter-out FORCE,$^) | \ |
| | 353 | lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ |
| | 354 | (rm -f $@ ; false) |
| | 355 | |
| | 356 | quiet_cmd_lzo = LZO $@ |
| | 357 | cmd_lzo = (cat $(filter-out FORCE,$^) | \ |
| | 358 | lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ |
| | 359 | (rm -f $@ ; false) |
| | 360 | |
| | 361 | quiet_cmd_lz4 = LZ4 $@ |
| | 362 | cmd_lz4 = (cat $(filter-out FORCE,$^) | \ |
| | 363 | lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ |
| | 364 | (rm -f $@ ; false) |
| | 365 | |
| | 366 | # U-Boot mkimage |
| | 367 | # --------------------------------------------------------------------------- |
| | 368 | |
| | 369 | MKIMAGE := $(srctree)/scripts/mkuboot.sh |
| | 370 | |
| | 371 | # SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces |
| | 372 | # the number of overrides in arch makefiles |
| | 373 | UIMAGE_ARCH ?= $(SRCARCH) |
| | 374 | UIMAGE_COMPRESSION ?= $(if $(2),$(2),none) |
| | 375 | UIMAGE_OPTS-y ?= |
| | 376 | UIMAGE_TYPE ?= kernel |
| | 377 | UIMAGE_LOADADDR ?= arch_must_set_this |
| | 378 | UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR) |
| | 379 | UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)' |
| | 380 | UIMAGE_IN ?= $< |
| | 381 | UIMAGE_OUT ?= $@ |
| | 382 | |
| | 383 | quiet_cmd_uimage = UIMAGE $(UIMAGE_OUT) |
| | 384 | cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \ |
| | 385 | -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \ |
| | 386 | -T $(UIMAGE_TYPE) \ |
| | 387 | -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \ |
| | 388 | -n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT) |
| | 389 | |
| | 390 | # XZ |
| | 391 | # --------------------------------------------------------------------------- |
| | 392 | # Use xzkern to compress the kernel image and xzmisc to compress other things. |
| | 393 | # |
| | 394 | # xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage |
| | 395 | # of the kernel decompressor. A BCJ filter is used if it is available for |
| | 396 | # the target architecture. xzkern also appends uncompressed size of the data |
| | 397 | # using size_append. The .xz format has the size information available at |
| | 398 | # the end of the file too, but it's in more complex format and it's good to |
| | 399 | # avoid changing the part of the boot code that reads the uncompressed size. |
| | 400 | # Note that the bytes added by size_append will make the xz tool think that |
| | 401 | # the file is corrupt. This is expected. |
| | 402 | # |
| | 403 | # xzmisc doesn't use size_append, so it can be used to create normal .xz |
| | 404 | # files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very |
| | 405 | # big dictionary would increase the memory usage too much in the multi-call |
| | 406 | # decompression mode. A BCJ filter isn't used either. |
| | 407 | quiet_cmd_xzkern = XZKERN $@ |
| | 408 | cmd_xzkern = (cat $(filter-out FORCE,$^) | \ |
| | 409 | sh $(srctree)/scripts/xz_wrap.sh && \ |
| | 410 | $(call size_append, $(filter-out FORCE,$^))) > $@ || \ |
| | 411 | (rm -f $@ ; false) |
| | 412 | |
| | 413 | quiet_cmd_xzmisc = XZMISC $@ |
| | 414 | cmd_xzmisc = (cat $(filter-out FORCE,$^) | \ |
| | 415 | xz --check=crc32 --lzma2=dict=1MiB) > $@ || \ |
| | 416 | (rm -f $@ ; false) |
| | 417 | |
| | 418 | # ASM offsets |
| | 419 | # --------------------------------------------------------------------------- |
| | 420 | |
| | 421 | # Default sed regexp - multiline due to syntax constraints |
| | 422 | # |
| | 423 | # Use [:space:] because LLVM's integrated assembler inserts <tab> around |
| | 424 | # the .ascii directive whereas GCC keeps the <space> as-is. |
| | 425 | define sed-offsets |
| | 426 | 's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \ |
| | 427 | /^->/{s:->#\(.*\):/* \1 */:; \ |
| | 428 | s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ |
| | 429 | s:->::; p;}' |
| | 430 | endef |
| | 431 | |
| | 432 | # Use filechk to avoid rebuilds when a header changes, but the resulting file |
| | 433 | # does not |
| | 434 | define filechk_offsets |
| | 435 | (set -e; \ |
| | 436 | echo "#ifndef $2"; \ |
| | 437 | echo "#define $2"; \ |
| | 438 | echo "/*"; \ |
| | 439 | echo " * DO NOT MODIFY."; \ |
| | 440 | echo " *"; \ |
| | 441 | echo " * This file was generated by Kbuild"; \ |
| | 442 | echo " */"; \ |
| | 443 | echo ""; \ |
| | 444 | sed -ne $(sed-offsets); \ |
| | 445 | echo ""; \ |
| | 446 | echo "#endif" ) |
| | 447 | endef |
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / blame_incremental