1# SPDX-License-Identifier: GPL-2.0 2# Backward compatibility 3asflags-y += $(EXTRA_AFLAGS) 4ccflags-y += $(EXTRA_CFLAGS) 5cppflags-y += $(EXTRA_CPPFLAGS) 6ldflags-y += $(EXTRA_LDFLAGS) 7 8# 9# flags that take effect in sub directories 10export KBUILD_SUBDIR_ASFLAGS := $(KBUILD_SUBDIR_ASFLAGS) $(subdir-asflags-y) 11export 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 19obj-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 24lib-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. 37modorder := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko)) 38 39__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y))) 40subdir-y += $(__subdir-y) 41__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m))) 42subdir-m += $(__subdir-m) 43obj-y := $(patsubst %/, %/built-in.o, $(obj-y)) 44obj-m := $(filter-out %/, $(obj-m)) 45 46# Subdirectories we need to descend into 47 48subdir-ym := $(sort $(subdir-y) $(subdir-m)) 49 50# if $(foo-objs) exists, foo.o is a composite object 51multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m)))) 52multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m)))) 53multi-used := $(multi-used-y) $(multi-used-m) 54single-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) 58multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y))) 59multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y))) 60multi-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 64subdir-obj-y := $(filter %/built-in.o, $(obj-y)) 65 66# $(obj-dirs) is a list of directories that contain object files 67obj-dirs := $(dir $(multi-objs) $(obj-y)) 68 69# Replace multi-part objects by their individual parts, look at local dir only 70real-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) 71real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m))) 72 73# Add subdir path 74 75extra-y := $(addprefix $(obj)/,$(extra-y)) 76always := $(addprefix $(obj)/,$(always)) 77targets := $(addprefix $(obj)/,$(targets)) 78modorder := $(addprefix $(obj)/,$(modorder)) 79obj-y := $(addprefix $(obj)/,$(obj-y)) 80obj-m := $(addprefix $(obj)/,$(obj-m)) 81lib-y := $(addprefix $(obj)/,$(lib-y)) 82subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y)) 83real-objs-y := $(addprefix $(obj)/,$(real-objs-y)) 84real-objs-m := $(addprefix $(obj)/,$(real-objs-m)) 85single-used-m := $(addprefix $(obj)/,$(single-used-m)) 86multi-used-y := $(addprefix $(obj)/,$(multi-used-y)) 87multi-used-m := $(addprefix $(obj)/,$(multi-used-m)) 88multi-objs-y := $(addprefix $(obj)/,$(multi-objs-y)) 89multi-objs-m := $(addprefix $(obj)/,$(multi-objs-m)) 90subdir-ym := $(addprefix $(obj)/,$(subdir-ym)) 91obj-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. 100name-fix = $(subst $(comma),_,$(subst -,_,$1)) 101basename_flags = -D"KBUILD_BASENAME=KBUILD_STR($(call name-fix,$(basetarget)))" 102modname_flags = $(if $(filter 1,$(words $(modname))),\ 103 -D"KBUILD_MODNAME=KBUILD_STR($(call name-fix,$(modname)))") 104 105orig_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)) 108orig_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# 118ifeq ($(CONFIG_GCOV_KERNEL),y) 119_c_flags += $(if $(patsubst n%,, \ 120 $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \ 121 $(CFLAGS_GCOV)) 122endif 123 124# 125# Enable address sanitizer flags for kernel except some files or directories 126# we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE) 127# 128ifeq ($(CONFIG_KASAN),y) 129_c_flags += $(if $(patsubst n%,, \ 130 $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \ 131 $(CFLAGS_KASAN)) 132endif 133 134# If building the kernel in a separate objtree expand all occurrences 135# of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/'). 136 137ifeq ($(KBUILD_SRC),) 138__c_flags = $(_c_flags) 139__a_flags = $(_a_flags) 140__cpp_flags = $(_cpp_flags) 141else 142 143# -I$(obj) locates generated .h files 144# $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files 145# and locates generated .h files 146# FIXME: Replace both with specific CFLAGS* statements in the makefiles 147__c_flags = $(call addtree,-I$(obj)) $(call flags,_c_flags) 148__a_flags = $(call flags,_a_flags) 149__cpp_flags = $(call flags,_cpp_flags) 150endif 151 152# Modified for U-Boot: LINUXINCLUDE -> UBOOTINCLUDE 153c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \ 154 $(__c_flags) $(modkern_cflags) \ 155 -D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags) 156 157a_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \ 158 $(__a_flags) $(modkern_aflags) 159 160cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \ 161 $(__cpp_flags) 162 163ld_flags = $(LDFLAGS) $(ldflags-y) 164 165# Try these files in order to find the U-Boot-specific .dtsi include file 166u_boot_dtsi_options = $(strip $(wildcard $(dir $<)$(basename $(notdir $<))-u-boot.dtsi) \ 167 $(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi) \ 168 $(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi) \ 169 $(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi) \ 170 $(wildcard $(dir $<)u-boot.dtsi)) 171 172u_boot_dtsi_options_raw = $(warning Automatic .dtsi inclusion: options: \ 173 $(dir $<)$(basename $(notdir $<))-u-boot.dtsi \ 174 $(dir $<)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi \ 175 $(dir $<)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi \ 176 $(dir $<)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi \ 177 $(dir $<)u-boot.dtsi ... \ 178 found: $(if $(u_boot_dtsi_options),"$(u_boot_dtsi_options)",nothing!)) 179 180# Uncomment for debugging 181# This shows all the files that were considered and the one that we chose. 182# u_boot_dtsi_options_debug = $(u_boot_dtsi_options_raw) 183 184# We use the first match 185u_boot_dtsi = $(strip $(u_boot_dtsi_options_debug) \ 186 $(notdir $(firstword $(u_boot_dtsi_options)))) 187 188# Modified for U-Boot 189dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \ 190 -I$(srctree)/arch/$(ARCH)/dts \ 191 -I$(srctree)/arch/$(ARCH)/dts/include \ 192 -Iinclude \ 193 -I$(srctree)/include \ 194 -I$(srctree)/arch/$(ARCH)/include \ 195 -include $(srctree)/include/linux/kconfig.h \ 196 -D__ASSEMBLY__ \ 197 -undef -D__DTS__ 198 199# Finds the multi-part object the current object will be linked into 200modname-multi = $(sort $(foreach m,$(multi-used),\ 201 $(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=)))) 202 203# Useful for describing the dependency of composite objects 204# Usage: 205# $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add) 206define multi_depend 207$(foreach m, $(notdir $1), \ 208 $(eval $(obj)/$m: \ 209 $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s))))))) 210endef 211 212# LEX 213# --------------------------------------------------------------------------- 214quiet_cmd_flex = LEX $@ 215 cmd_flex = $(LEX) -o$@ -L $< 216 217.PRECIOUS: $(obj)/%.lex.c 218$(obj)/%.lex.c: $(src)/%.l FORCE 219 $(call if_changed,flex) 220 221# YACC 222# --------------------------------------------------------------------------- 223quiet_cmd_bison = YACC $@ 224 cmd_bison = $(YACC) -o$@ -t -l $< 225 226.PRECIOUS: $(obj)/%.tab.c 227$(obj)/%.tab.c: $(src)/%.y FORCE 228 $(call if_changed,bison) 229 230quiet_cmd_bison_h = YACC $@ 231 cmd_bison_h = $(YACC) -o/dev/null --defines=$@ -t -l $< 232 233.PRECIOUS: $(obj)/%.tab.h 234$(obj)/%.tab.h: $(src)/%.y FORCE 235 $(call if_changed,bison_h) 236 237# Shipped files 238# =========================================================================== 239 240quiet_cmd_shipped = SHIPPED $@ 241cmd_shipped = cat $< > $@ 242 243$(obj)/%: $(src)/%_shipped 244 $(call cmd,shipped) 245 246# Commands useful for building a boot image 247# =========================================================================== 248# 249# Use as following: 250# 251# target: source(s) FORCE 252# $(if_changed,ld/objcopy/gzip) 253# 254# and add target to extra-y so that we know we have to 255# read in the saved command line 256 257# Linking 258# --------------------------------------------------------------------------- 259 260quiet_cmd_ld = LD $@ 261cmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \ 262 $(filter-out FORCE,$^) -o $@ 263 264# Objcopy 265# --------------------------------------------------------------------------- 266 267quiet_cmd_objcopy = OBJCOPY $@ 268cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ 269 270# Gzip 271# --------------------------------------------------------------------------- 272 273quiet_cmd_gzip = GZIP $@ 274cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \ 275 (rm -f $@ ; false) 276 277# DTC 278# --------------------------------------------------------------------------- 279 280# Generate an assembly file to wrap the output of the device tree compiler 281quiet_cmd_dt_S_dtb= DTB $@ 282# Modified for U-Boot 283cmd_dt_S_dtb= \ 284( \ 285 echo '.section .dtb.init.rodata,"a"'; \ 286 echo '.balign 16'; \ 287 echo '.global __dtb_$(subst -,_,$(*F))_begin'; \ 288 echo '__dtb_$(subst -,_,$(*F))_begin:'; \ 289 echo '.incbin "$<" '; \ 290 echo '__dtb_$(subst -,_,$(*F))_end:'; \ 291 echo '.global __dtb_$(subst -,_,$(*F))_end'; \ 292 echo '.balign 16'; \ 293) > $@ 294 295$(obj)/%.dtb.S: $(obj)/%.dtb 296 $(call cmd,dt_S_dtb) 297 298quiet_cmd_dtc = DTC $@ 299# Modified for U-Boot 300# Bring in any U-Boot-specific include at the end of the file 301cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \ 302 (cat $<; $(if $(u_boot_dtsi),echo '$(pound)include "$(u_boot_dtsi)"')) > $(pre-tmp); \ 303 $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $(pre-tmp) ; \ 304 $(DTC) -O dtb -o $@ -b 0 \ 305 -i $(dir $<) $(DTC_FLAGS) \ 306 -d $(depfile).dtc.tmp $(dtc-tmp) ; \ 307 cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) 308 309$(obj)/%.dtb: $(src)/%.dts FORCE 310 $(call if_changed_dep,dtc) 311 312pre-tmp = $(subst $(comma),_,$(dot-target).pre.tmp) 313dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp) 314 315# DTCO 316# --------------------------------------------------------------------------- 317 318quiet_cmd_dtco = DTCO $@ 319# Rule for objects only; does not put specific u-boot include at the end 320# No generation of assembly file either 321# Modified for U-Boot 322cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \ 323 $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) - ; \ 324 $(DTC) -@ -O dtb -o $@ -b 0 \ 325 -i $(dir $<) $(DTC_FLAGS) \ 326 -d $(depfile).dtc.tmp $(dtc-tmp) ; \ 327 cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) 328 329$(obj)/%.dtbo: $(src)/%.dts FORCE 330 $(call if_changed_dep,dtco) 331 332# Fonts 333# --------------------------------------------------------------------------- 334 335# Generate an assembly file to wrap the font data 336quiet_cmd_S_ttf= TTF $@ 337# Modified for U-Boot 338cmd_S_ttf= \ 339( \ 340 echo '.section .rodata.ttf.init,"a"'; \ 341 echo '.balign 16'; \ 342 echo '.global __ttf_$(*F)_begin'; \ 343 echo '__ttf_$(*F)_begin:'; \ 344 echo '.incbin "$<" '; \ 345 echo '__ttf_$(*F)_end:'; \ 346 echo '.global __ttf_$(*F)_end'; \ 347 echo '.balign 16'; \ 348) > $@ 349 350$(obj)/%.S: $(src)/%.ttf 351 $(call cmd,S_ttf) 352 353# EFI applications 354# A Makefile target *.efi is built as EFI application. 355# A Makefile target *_efi.S wraps *.efi as built-in EFI application. 356# --------------------------------------------------------------------------- 357 358# Generate an assembly file to wrap the EFI app 359cmd_S_efi= \ 360( \ 361 echo '.section .rodata.$*.init,"a"'; \ 362 echo '.balign 16'; \ 363 echo '.global __efi_$*_begin'; \ 364 echo '__efi_$*_begin:'; \ 365 echo '.incbin "$<" '; \ 366 echo '__efi_$*_end:'; \ 367 echo '.global __efi_$*_end'; \ 368 echo '.balign 16'; \ 369) > $@ 370 371$(obj)/%_efi.S: $(obj)/%.efi 372 $(call cmd,S_efi) 373 374quiet_cmd_efi_objcopy = OBJCOPY $@ 375cmd_efi_objcopy = $(OBJCOPY) -j .header -j .text -j .sdata -j .data -j \ 376 .dynamic -j .dynsym -j .rel* -j .rela* -j .reloc \ 377 $(if $(EFI_TARGET),$(EFI_TARGET),-O binary) $^ $@ 378 379$(obj)/%.efi: $(obj)/%_efi.so 380 $(call cmd,efi_objcopy) 381 382quiet_cmd_efi_ld = LD $@ 383cmd_efi_ld = $(LD) -nostdlib -znocombreloc -T $(EFI_LDS_PATH) -shared \ 384 -Bsymbolic $^ -o $@ 385 386EFI_LDS_PATH = $(srctree)/arch/$(ARCH)/lib/$(EFI_LDS) 387 388$(obj)/efi_crt0.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_CRT0:.o=.S) 389 $(call if_changed_dep,as_o_S) 390 391$(obj)/efi_reloc.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_RELOC:.o=.c) $(recordmcount_source) FORCE 392 $(call cmd,force_checksrc) 393 $(call if_changed_rule,cc_o_c) 394 395$(obj)/%_efi.so: $(obj)/%.o $(obj)/efi_crt0.o $(obj)/efi_reloc.o 396 $(call cmd,efi_ld) 397 398# ACPI 399# --------------------------------------------------------------------------- 400quiet_cmd_acpi_c_asl= ASL $< 401cmd_acpi_c_asl= \ 402 $(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -P $(UBOOTINCLUDE) -o $<.tmp $<; \ 403 iasl -p $< -tc $<.tmp $(if $(KBUILD_VERBOSE:1=), >/dev/null) && \ 404 mv $(patsubst %.asl,%.hex,$<) $@ 405 406$(obj)/dsdt.c: $(src)/dsdt.asl 407 $(call cmd,acpi_c_asl) 408 $(Q)sed -i -e "s,dsdt_aml_code,AmlCode," $@ 409 410# Bzip2 411# --------------------------------------------------------------------------- 412 413# Bzip2 and LZMA do not include size in file... so we have to fake that; 414# append the size as a 32-bit littleendian number as gzip does. 415size_append = printf $(shell \ 416dec_size=0; \ 417for F in $1; do \ 418 fsize=$$(stat -c "%s" $$F); \ 419 dec_size=$$(expr $$dec_size + $$fsize); \ 420done; \ 421printf "%08x\n" $$dec_size | \ 422 sed 's/\(..\)/\1 /g' | { \ 423 read ch0 ch1 ch2 ch3; \ 424 for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \ 425 printf '%s%03o' '\\' $$((0x$$ch)); \ 426 done; \ 427 } \ 428) 429 430quiet_cmd_bzip2 = BZIP2 $@ 431cmd_bzip2 = (cat $(filter-out FORCE,$^) | \ 432 bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ 433 (rm -f $@ ; false) 434 435# Lzma 436# --------------------------------------------------------------------------- 437 438quiet_cmd_lzma = LZMA $@ 439cmd_lzma = (cat $(filter-out FORCE,$^) | \ 440 lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ 441 (rm -f $@ ; false) 442 443quiet_cmd_lzo = LZO $@ 444cmd_lzo = (cat $(filter-out FORCE,$^) | \ 445 lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ 446 (rm -f $@ ; false) 447 448quiet_cmd_lz4 = LZ4 $@ 449cmd_lz4 = (cat $(filter-out FORCE,$^) | \ 450 lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ 451 (rm -f $@ ; false) 452 453# U-Boot mkimage 454# --------------------------------------------------------------------------- 455 456MKIMAGE := $(srctree)/scripts/mkuboot.sh 457 458# SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces 459# the number of overrides in arch makefiles 460UIMAGE_ARCH ?= $(SRCARCH) 461UIMAGE_COMPRESSION ?= $(if $(2),$(2),none) 462UIMAGE_OPTS-y ?= 463UIMAGE_TYPE ?= kernel 464UIMAGE_LOADADDR ?= arch_must_set_this 465UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR) 466UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)' 467UIMAGE_IN ?= $< 468UIMAGE_OUT ?= $@ 469 470quiet_cmd_uimage = UIMAGE $(UIMAGE_OUT) 471 cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \ 472 -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \ 473 -T $(UIMAGE_TYPE) \ 474 -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \ 475 -n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT) 476 477# XZ 478# --------------------------------------------------------------------------- 479# Use xzkern to compress the kernel image and xzmisc to compress other things. 480# 481# xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage 482# of the kernel decompressor. A BCJ filter is used if it is available for 483# the target architecture. xzkern also appends uncompressed size of the data 484# using size_append. The .xz format has the size information available at 485# the end of the file too, but it's in more complex format and it's good to 486# avoid changing the part of the boot code that reads the uncompressed size. 487# Note that the bytes added by size_append will make the xz tool think that 488# the file is corrupt. This is expected. 489# 490# xzmisc doesn't use size_append, so it can be used to create normal .xz 491# files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very 492# big dictionary would increase the memory usage too much in the multi-call 493# decompression mode. A BCJ filter isn't used either. 494quiet_cmd_xzkern = XZKERN $@ 495cmd_xzkern = (cat $(filter-out FORCE,$^) | \ 496 sh $(srctree)/scripts/xz_wrap.sh && \ 497 $(call size_append, $(filter-out FORCE,$^))) > $@ || \ 498 (rm -f $@ ; false) 499 500quiet_cmd_xzmisc = XZMISC $@ 501cmd_xzmisc = (cat $(filter-out FORCE,$^) | \ 502 xz --check=crc32 --lzma2=dict=1MiB) > $@ || \ 503 (rm -f $@ ; false) 504 505# Additional commands for U-Boot 506# 507# mkimage 508# --------------------------------------------------------------------------- 509MKIMAGEOUTPUT ?= /dev/null 510quiet_cmd_mkimage = MKIMAGE $@ 511cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \ 512 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT)) 513 514# fdtgrep 515# --------------------------------------------------------------------------- 516# Pass the original device tree file through fdtgrep twice. The first pass 517# removes any unwanted nodes (i.e. those which don't have the 518# 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second 519# pass removes various unused properties from the remaining nodes. 520# The output is typically a much smaller device tree file. 521ifeq ($(CONFIG_TPL_BUILD),y) 522fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl 523else 524fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-spl 525endif 526quiet_cmd_fdtgrep = FDTGREP $@ 527 cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -RT $< \ 528 -n /chosen -n /config -O dtb | \ 529 $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \ 530 $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS))) 531