1b2441318SGreg Kroah-Hartman# SPDX-License-Identifier: GPL-2.0 2f77bf014SSam Ravnborg# Backward compatibility 3f77bf014SSam Ravnborgasflags-y += $(EXTRA_AFLAGS) 4f77bf014SSam Ravnborgccflags-y += $(EXTRA_CFLAGS) 5f77bf014SSam Ravnborgcppflags-y += $(EXTRA_CPPFLAGS) 6f77bf014SSam Ravnborgldflags-y += $(EXTRA_LDFLAGS) 7f77bf014SSam Ravnborg 88fdc3fbbSCao jin# flags that take effect in current and sub directories 94e13d47cSMasahiro YamadaKBUILD_AFLAGS += $(subdir-asflags-y) 104e13d47cSMasahiro YamadaKBUILD_CFLAGS += $(subdir-ccflags-y) 11720097d8SSam Ravnborg 121da177e4SLinus Torvalds# Figure out what we need to build from the various variables 131da177e4SLinus Torvalds# =========================================================================== 141da177e4SLinus Torvalds 151da177e4SLinus Torvalds# When an object is listed to be built compiled-in and modular, 161da177e4SLinus Torvalds# only build the compiled-in version 171da177e4SLinus Torvaldsobj-m := $(filter-out $(obj-y),$(obj-m)) 181da177e4SLinus Torvalds 191da177e4SLinus Torvalds# Libraries are always collected in one lib file. 201da177e4SLinus Torvalds# Filter out objects already built-in 211da177e4SLinus Torvaldslib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m))) 221da177e4SLinus Torvalds 230a8820e7SMasahiro Yamada# Subdirectories we need to descend into 240a8820e7SMasahiro Yamadasubdir-ym := $(sort $(subdir-y) $(subdir-m) \ 250a8820e7SMasahiro Yamada $(patsubst %/,%, $(filter %/, $(obj-y) $(obj-m)))) 260a8820e7SMasahiro Yamada 27b2c88554SMasahiro Yamada# Handle objects in subdirs: 28b2c88554SMasahiro Yamada# - If we encounter foo/ in $(obj-y), replace it by foo/built-in.a and 29b2c88554SMasahiro Yamada# foo/modules.order 30b2c88554SMasahiro Yamada# - If we encounter foo/ in $(obj-m), replace it by foo/modules.order 31b2c88554SMasahiro Yamada# 32b2c88554SMasahiro Yamada# Generate modules.order to determine modorder. Unfortunately, we don't have 33b2c88554SMasahiro Yamada# information about ordering between -y and -m subdirs. Just put -y's first. 34b2c88554SMasahiro Yamada 35b2c88554SMasahiro Yamadaifdef need-modorder 36b2c88554SMasahiro Yamadaobj-m := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m)) 37b2c88554SMasahiro Yamadaelse 38b2c88554SMasahiro Yamadaobj-m := $(filter-out %/, $(obj-m)) 39b2c88554SMasahiro Yamadaendif 40b2c88554SMasahiro Yamada 4156d58936SMasahiro Yamadaifdef need-builtin 42f49821eeSNicholas Pigginobj-y := $(patsubst %/, %/built-in.a, $(obj-y)) 4356d58936SMasahiro Yamadaelse 4456d58936SMasahiro Yamadaobj-y := $(filter-out %/, $(obj-y)) 4556d58936SMasahiro Yamadaendif 461da177e4SLinus Torvalds 4744f87191SMasahiro Yamada# Expand $(foo-objs) $(foo-y) etc. by replacing their individuals 4844f87191SMasahiro Yamadasuffix-search = $(strip $(foreach s, $3, $($(1:%$(strip $2)=%$s)))) 4944f87191SMasahiro Yamada# List composite targets that are constructed by combining other targets 5044f87191SMasahiro Yamadamulti-search = $(sort $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -), $m))) 5144f87191SMasahiro Yamada# List primitive targets that are compiled from source files 5244f87191SMasahiro Yamadareal-search = $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -), $(call suffix-search, $m, $2, $3), $m)) 5344f87191SMasahiro Yamada 5433e84f2eSMasahiro Yamada# If $(foo-objs), $(foo-y), $(foo-m), or $(foo-) exists, foo.o is a composite object 5544f87191SMasahiro Yamadamulti-obj-y := $(call multi-search, $(obj-y), .o, -objs -y) 5644f87191SMasahiro Yamadamulti-obj-m := $(call multi-search, $(obj-m), .o, -objs -y -m) 57a6601e01SMasahiro Yamadamulti-obj-ym := $(multi-obj-y) $(multi-obj-m) 581da177e4SLinus Torvalds 59f98fe47cSMasahiro Yamada# Replace multi-part objects by their individual parts, 60f98fe47cSMasahiro Yamada# including built-in.a from subdirectories 6144f87191SMasahiro Yamadareal-obj-y := $(call real-search, $(obj-y), .o, -objs -y) 6244f87191SMasahiro Yamadareal-obj-m := $(call real-search, $(obj-m), .o, -objs -y -m) 631da177e4SLinus Torvalds 645f2fb52fSMasahiro Yamadaalways-y += $(always-m) 655f2fb52fSMasahiro Yamada 66faabed29SMasahiro Yamada# hostprogs-always-y += foo 67faabed29SMasahiro Yamada# ... is a shorthand for 68faabed29SMasahiro Yamada# hostprogs += foo 69faabed29SMasahiro Yamada# always-y += foo 70faabed29SMasahiro Yamadahostprogs += $(hostprogs-always-y) $(hostprogs-always-m) 71faabed29SMasahiro Yamadaalways-y += $(hostprogs-always-y) $(hostprogs-always-m) 72faabed29SMasahiro Yamada 73faabed29SMasahiro Yamada# userprogs-always-y is likewise. 74faabed29SMasahiro Yamadauserprogs += $(userprogs-always-y) $(userprogs-always-m) 75faabed29SMasahiro Yamadaalways-y += $(userprogs-always-y) $(userprogs-always-m) 76faabed29SMasahiro Yamada 777e7962ddSMasahiro Yamada# DTB 787e7962ddSMasahiro Yamada# If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built 799ca29e41SViresh Kumardtb-$(CONFIG_OF_ALL_DTBS) += $(dtb-) 809ca29e41SViresh Kumar 81bcf0c664SMasahiro Yamada# Composite DTB (i.e. DTB constructed by overlay) 82bcf0c664SMasahiro Yamadamulti-dtb-y := $(call multi-search, $(dtb-y), .dtb, -dtbs) 83bcf0c664SMasahiro Yamada# Primitive DTB compiled from *.dts 84bcf0c664SMasahiro Yamadareal-dtb-y := $(call real-search, $(dtb-y), .dtb, -dtbs) 85bcf0c664SMasahiro Yamada# Base DTB that overlay is applied onto (each first word of $(*-dtbs) expansion) 86bcf0c664SMasahiro Yamadabase-dtb-y := $(foreach m, $(multi-dtb-y), $(firstword $(call suffix-search, $m, .dtb, -dtbs))) 8715d16d6dSRob Herring 882047ace9SMasahiro Yamadaalways-y += $(dtb-y) 897e7962ddSMasahiro Yamada 904f0e3a57SRob Herringifneq ($(CHECK_DTBS),) 91bcf0c664SMasahiro Yamadaalways-y += $(patsubst %.dtb,%.dt.yaml, $(real-dtb-y)) 92bcf0c664SMasahiro Yamadaalways-y += $(patsubst %.dtbo,%.dt.yaml, $(real-dtb-y)) 934f0e3a57SRob Herringendif 944f0e3a57SRob Herring 951da177e4SLinus Torvalds# Add subdir path 961da177e4SLinus Torvalds 971da177e4SLinus Torvaldsextra-y := $(addprefix $(obj)/,$(extra-y)) 985f2fb52fSMasahiro Yamadaalways-y := $(addprefix $(obj)/,$(always-y)) 991da177e4SLinus Torvaldstargets := $(addprefix $(obj)/,$(targets)) 1001da177e4SLinus Torvaldsobj-m := $(addprefix $(obj)/,$(obj-m)) 1011da177e4SLinus Torvaldslib-y := $(addprefix $(obj)/,$(lib-y)) 102f5f33681SMasahiro Yamadareal-obj-y := $(addprefix $(obj)/,$(real-obj-y)) 103f5f33681SMasahiro Yamadareal-obj-m := $(addprefix $(obj)/,$(real-obj-m)) 104a6601e01SMasahiro Yamadamulti-obj-m := $(addprefix $(obj)/, $(multi-obj-m)) 105bcf0c664SMasahiro Yamadamulti-dtb-y := $(addprefix $(obj)/, $(multi-dtb-y)) 106bcf0c664SMasahiro Yamadareal-dtb-y := $(addprefix $(obj)/, $(real-dtb-y)) 1071da177e4SLinus Torvaldssubdir-ym := $(addprefix $(obj)/,$(subdir-ym)) 1081da177e4SLinus Torvalds 109c0152e9aSMasahiro Yamada# Finds the multi-part object the current object will be linked into. 1101664a377SMasahiro Yamada# If the object belongs to two or more multi-part objects, list them all. 111a6601e01SMasahiro Yamadamodname-multi = $(sort $(foreach m,$(multi-obj-ym),\ 112d4452837SMasahiro Yamada $(if $(filter $*.o, $(call suffix-search, $m, .o, -objs -y -m)),$(m:.o=)))) 113c0152e9aSMasahiro Yamada 1141664a377SMasahiro Yamada__modname = $(if $(modname-multi),$(modname-multi),$(basetarget)) 1151664a377SMasahiro Yamada 1161664a377SMasahiro Yamadamodname = $(subst $(space),:,$(__modname)) 1171664a377SMasahiro Yamadamodfile = $(addprefix $(obj)/,$(__modname)) 118c0152e9aSMasahiro Yamada 11954b8ae66SMasahiro Yamada# target with $(obj)/ and its suffix stripped 12054b8ae66SMasahiro Yamadatarget-stem = $(basename $(patsubst $(obj)/%,%,$@)) 12154b8ae66SMasahiro Yamada 1221da177e4SLinus Torvalds# These flags are needed for modversions and compiling, so we define them here 1238fdc3fbbSCao jin# $(modname_flags) defines KBUILD_MODNAME as the name of the module it will 1241da177e4SLinus Torvalds# end up in (or would, if it gets compiled in) 125a8cccdd9SSami Tolvanenname-fix-token = $(subst $(comma),_,$(subst -,_,$1)) 126a8cccdd9SSami Tolvanenname-fix = $(call stringify,$(call name-fix-token,$1)) 127b42841b7SMichal Marekbasename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget)) 128a8cccdd9SSami Tolvanenmodname_flags = -DKBUILD_MODNAME=$(call name-fix,$(modname)) \ 129a8cccdd9SSami Tolvanen -D__KBUILD_MODNAME=kmod_$(call name-fix-token,$(modname)) 1301664a377SMasahiro Yamadamodfile_flags = -DKBUILD_MODFILE=$(call stringify,$(modfile)) 1311da177e4SLinus Torvalds 13215d5761aSMasahiro Yamada_c_flags = $(filter-out $(CFLAGS_REMOVE_$(target-stem).o), \ 13315d5761aSMasahiro Yamada $(filter-out $(ccflags-remove-y), \ 13415d5761aSMasahiro Yamada $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(ccflags-y)) \ 13515d5761aSMasahiro Yamada $(CFLAGS_$(target-stem).o)) 13615d5761aSMasahiro Yamada_a_flags = $(filter-out $(AFLAGS_REMOVE_$(target-stem).o), \ 13715d5761aSMasahiro Yamada $(filter-out $(asflags-remove-y), \ 13815d5761aSMasahiro Yamada $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(asflags-y)) \ 13915d5761aSMasahiro Yamada $(AFLAGS_$(target-stem).o)) 14054b8ae66SMasahiro Yamada_cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(target-stem).lds) 1411da177e4SLinus Torvalds 1422521f2c2SPeter Oberparleiter# 1432521f2c2SPeter Oberparleiter# Enable gcov profiling flags for a file, directory or for all files depending 1442521f2c2SPeter Oberparleiter# on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL 1452521f2c2SPeter Oberparleiter# (in this order) 1462521f2c2SPeter Oberparleiter# 1472521f2c2SPeter Oberparleiterifeq ($(CONFIG_GCOV_KERNEL),y) 1482521f2c2SPeter Oberparleiter_c_flags += $(if $(patsubst n%,, \ 1492521f2c2SPeter Oberparleiter $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \ 1502521f2c2SPeter Oberparleiter $(CFLAGS_GCOV)) 1512521f2c2SPeter Oberparleiterendif 1522521f2c2SPeter Oberparleiter 1530b24beccSAndrey Ryabinin# 1540b24beccSAndrey Ryabinin# Enable address sanitizer flags for kernel except some files or directories 1550b24beccSAndrey Ryabinin# we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE) 1560b24beccSAndrey Ryabinin# 1570b24beccSAndrey Ryabininifeq ($(CONFIG_KASAN),y) 1580fea6e9aSAndrey Konovalovifneq ($(CONFIG_KASAN_HW_TAGS),y) 1590b24beccSAndrey Ryabinin_c_flags += $(if $(patsubst n%,, \ 1600b24beccSAndrey Ryabinin $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \ 1610e410e15SAndrey Konovalov $(CFLAGS_KASAN), $(CFLAGS_KASAN_NOSANITIZE)) 1620b24beccSAndrey Ryabininendif 1630fea6e9aSAndrey Konovalovendif 1640b24beccSAndrey Ryabinin 165c6d30853SAndrey Ryabininifeq ($(CONFIG_UBSAN),y) 166c6d30853SAndrey Ryabinin_c_flags += $(if $(patsubst n%,, \ 167c6d30853SAndrey Ryabinin $(UBSAN_SANITIZE_$(basetarget).o)$(UBSAN_SANITIZE)$(CONFIG_UBSAN_SANITIZE_ALL)), \ 168c6d30853SAndrey Ryabinin $(CFLAGS_UBSAN)) 169c6d30853SAndrey Ryabininendif 170c6d30853SAndrey Ryabinin 1715c9a8750SDmitry Vyukovifeq ($(CONFIG_KCOV),y) 1725c9a8750SDmitry Vyukov_c_flags += $(if $(patsubst n%,, \ 173a4691deaSVegard Nossum $(KCOV_INSTRUMENT_$(basetarget).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \ 1745c9a8750SDmitry Vyukov $(CFLAGS_KCOV)) 1755c9a8750SDmitry Vyukovendif 1765c9a8750SDmitry Vyukov 177dfd402a4SMarco Elver# 178dfd402a4SMarco Elver# Enable KCSAN flags except some files or directories we don't want to check 179dfd402a4SMarco Elver# (depends on variables KCSAN_SANITIZE_obj.o, KCSAN_SANITIZE) 180dfd402a4SMarco Elver# 181dfd402a4SMarco Elverifeq ($(CONFIG_KCSAN),y) 182dfd402a4SMarco Elver_c_flags += $(if $(patsubst n%,, \ 183dfd402a4SMarco Elver $(KCSAN_SANITIZE_$(basetarget).o)$(KCSAN_SANITIZE)y), \ 184dfd402a4SMarco Elver $(CFLAGS_KCSAN)) 185dfd402a4SMarco Elverendif 186dfd402a4SMarco Elver 187cdd750bfSMasahiro Yamada# $(srctree)/$(src) for including checkin headers from generated source files 188cdd750bfSMasahiro Yamada# $(objtree)/$(obj) for including generated headers from checkin source files 18958156ba4SMasahiro Yamadaifeq ($(KBUILD_EXTMOD),) 190051f278eSMasahiro Yamadaifdef building_out_of_srctree 191cdd750bfSMasahiro Yamada_c_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) 192cdd750bfSMasahiro Yamada_a_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) 193cdd750bfSMasahiro Yamada_cpp_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) 1941da177e4SLinus Torvaldsendif 19558156ba4SMasahiro Yamadaendif 1961da177e4SLinus Torvalds 197eb27ea5cSMasahiro Yamadapart-of-module = $(if $(filter $(basename $@).o, $(real-obj-m)),y) 198eb27ea5cSMasahiro Yamadaquiet_modtag = $(if $(part-of-module),[M], ) 199eb27ea5cSMasahiro Yamada 200eb27ea5cSMasahiro Yamadamodkern_cflags = \ 201eb27ea5cSMasahiro Yamada $(if $(part-of-module), \ 202eb27ea5cSMasahiro Yamada $(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \ 2031664a377SMasahiro Yamada $(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL) $(modfile_flags)) 204eb27ea5cSMasahiro Yamada 205eb27ea5cSMasahiro Yamadamodkern_aflags = $(if $(part-of-module), \ 206eb27ea5cSMasahiro Yamada $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE), \ 207eb27ea5cSMasahiro Yamada $(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL)) 208eb27ea5cSMasahiro Yamada 20930a77297SMasahiro Yamadac_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ 210a95b37e2SMasahiro Yamada -include $(srctree)/include/linux/compiler_types.h \ 211cdd750bfSMasahiro Yamada $(_c_flags) $(modkern_cflags) \ 212b42841b7SMichal Marek $(basename_flags) $(modname_flags) 2131da177e4SLinus Torvalds 21430a77297SMasahiro Yamadaa_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ 215cdd750bfSMasahiro Yamada $(_a_flags) $(modkern_aflags) 2161da177e4SLinus Torvalds 21730a77297SMasahiro Yamadacpp_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ 218cdd750bfSMasahiro Yamada $(_cpp_flags) 2191da177e4SLinus Torvalds 220d503ac53SMasahiro Yamadald_flags = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) 2211da177e4SLinus Torvalds 22250f9ddafSMasahiro YamadaDTC_INCLUDE := $(srctree)/scripts/dtc/include-prefixes 22350f9ddafSMasahiro Yamada 22430a77297SMasahiro Yamadadtc_cpp_flags = -Wp,-MMD,$(depfile).pre.tmp -nostdinc \ 22550f9ddafSMasahiro Yamada $(addprefix -I,$(DTC_INCLUDE)) \ 226e570d7c1SStephen Warren -undef -D__DTS__ 227e570d7c1SStephen Warren 228850ded46SSami Tolvanenifeq ($(CONFIG_LTO_CLANG),y) 229850ded46SSami Tolvanen# With CONFIG_LTO_CLANG, .o files in modules might be LLVM bitcode, so we 230850ded46SSami Tolvanen# need to run LTO to compile them into native code (.lto.o) before further 231850ded46SSami Tolvanen# processing. 232850ded46SSami Tolvanenmod-prelink-ext := .lto 233850ded46SSami Tolvanenendif 234850ded46SSami Tolvanen 235c8589d1eSMasahiro Yamada# Useful for describing the dependency of composite objects 236c8589d1eSMasahiro Yamada# Usage: 237c8589d1eSMasahiro Yamada# $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add) 238c8589d1eSMasahiro Yamadadefine multi_depend 239c8589d1eSMasahiro Yamada$(foreach m, $(notdir $1), \ 240c8589d1eSMasahiro Yamada $(eval $(obj)/$m: \ 241c8589d1eSMasahiro Yamada $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s))))))) 242c8589d1eSMasahiro Yamadaendef 243c8589d1eSMasahiro Yamada 244dee9c0b5SMasahiro Yamadaquiet_cmd_copy = COPY $@ 245dee9c0b5SMasahiro Yamada cmd_copy = cp $< $@ 246dee9c0b5SMasahiro Yamada 2471da177e4SLinus Torvalds# Shipped files 2481da177e4SLinus Torvalds# =========================================================================== 2493787b7daSMasahiro Yamada# 'cp' preserves permissions. If you use it to copy a file in read-only srctree, 2503787b7daSMasahiro Yamada# the copy would be read-only as well, leading to an error when executing the 2513787b7daSMasahiro Yamada# rule next time. Use 'cat' instead in order to generate a writable file. 2521da177e4SLinus Torvalds 2531da177e4SLinus Torvaldsquiet_cmd_shipped = SHIPPED $@ 2541da177e4SLinus Torvaldscmd_shipped = cat $< > $@ 2551da177e4SLinus Torvalds 256991d76c9SArnaud Lacombe$(obj)/%: $(src)/%_shipped 2571da177e4SLinus Torvalds $(call cmd,shipped) 2581da177e4SLinus Torvalds 2591da177e4SLinus Torvalds# Commands useful for building a boot image 2601da177e4SLinus Torvalds# =========================================================================== 2611da177e4SLinus Torvalds# 2621da177e4SLinus Torvalds# Use as following: 2631da177e4SLinus Torvalds# 2641da177e4SLinus Torvalds# target: source(s) FORCE 2651da177e4SLinus Torvalds# $(if_changed,ld/objcopy/gzip) 2661da177e4SLinus Torvalds# 2672047ace9SMasahiro Yamada# and add target to 'targets' so that we know we have to 2681da177e4SLinus Torvalds# read in the saved command line 2691da177e4SLinus Torvalds 2701da177e4SLinus Torvalds# Linking 2711da177e4SLinus Torvalds# --------------------------------------------------------------------------- 2721da177e4SLinus Torvalds 2731da177e4SLinus Torvaldsquiet_cmd_ld = LD $@ 274afa974b7SMasahiro Yamada cmd_ld = $(LD) $(ld_flags) $(real-prereqs) -o $@ 2751da177e4SLinus Torvalds 276898f5a00SMasahiro Yamada# Archive 277898f5a00SMasahiro Yamada# --------------------------------------------------------------------------- 278898f5a00SMasahiro Yamada 279898f5a00SMasahiro Yamadaquiet_cmd_ar = AR $@ 28013dc8c02SMasahiro Yamada cmd_ar = rm -f $@; $(AR) cDPrsT $@ $(real-prereqs) 281898f5a00SMasahiro Yamada 2821da177e4SLinus Torvalds# Objcopy 2831da177e4SLinus Torvalds# --------------------------------------------------------------------------- 2841da177e4SLinus Torvalds 2851da177e4SLinus Torvaldsquiet_cmd_objcopy = OBJCOPY $@ 2861da177e4SLinus Torvaldscmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ 2871da177e4SLinus Torvalds 2881da177e4SLinus Torvalds# Gzip 2891da177e4SLinus Torvalds# --------------------------------------------------------------------------- 2901da177e4SLinus Torvalds 2911da177e4SLinus Torvaldsquiet_cmd_gzip = GZIP $@ 292e4a42c82SDenis Efremov cmd_gzip = cat $(real-prereqs) | $(KGZIP) -n -f -9 > $@ 2931da177e4SLinus Torvalds 294aab94339SDirk Brandewie# DTC 295aab94339SDirk Brandewie# --------------------------------------------------------------------------- 2966b22b3d1SRob HerringDTC ?= $(objtree)/scripts/dtc/dtc 2973eb619b2SRob HerringDTC_FLAGS += -Wno-interrupt_provider 298aab94339SDirk Brandewie 299bc553986SRob Herring# Disable noisy checks by default 300e27128dbSMasahiro Yamadaifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),) 3018654cb8dSRob HerringDTC_FLAGS += -Wno-unit_address_vs_reg \ 3024fd98e37SRob Herring -Wno-avoid_unnecessary_addr_size \ 3034fd98e37SRob Herring -Wno-alias_paths \ 30474656b68SRob Herring -Wno-graph_child_address \ 30570523a3cSRob Herring -Wno-simple_bus_reg \ 3061ee7943cSRob Herring -Wno-unique_unit_address 307bc553986SRob Herringendif 308bc553986SRob Herring 309e27128dbSMasahiro Yamadaifneq ($(findstring 2,$(KBUILD_EXTRA_WARN)),) 3108654cb8dSRob HerringDTC_FLAGS += -Wnode_name_chars_strict \ 3113eb619b2SRob Herring -Wproperty_name_chars_strict \ 3123eb619b2SRob Herring -Winterrupt_provider 313aab94339SDirk Brandewieendif 314aab94339SDirk Brandewie 315331f7416SFrank RowandDTC_FLAGS += $(DTC_FLAGS_$(basetarget)) 316331f7416SFrank Rowand 317bcf0c664SMasahiro Yamada# Set -@ if the target is a base DTB that overlay is applied onto 318bcf0c664SMasahiro YamadaDTC_FLAGS += $(if $(filter $(patsubst $(obj)/%,%,$@), $(base-dtb-y)), -@) 319bcf0c664SMasahiro Yamada 320aab94339SDirk Brandewie# Generate an assembly file to wrap the output of the device tree compiler 321aab94339SDirk Brandewiequiet_cmd_dt_S_dtb= DTB $@ 322aab94339SDirk Brandewiecmd_dt_S_dtb= \ 323b79c6aa6SMasahiro Yamada{ \ 324aab94339SDirk Brandewie echo '\#include <asm-generic/vmlinux.lds.h>'; \ 325aab94339SDirk Brandewie echo '.section .dtb.init.rodata,"a"'; \ 326aab94339SDirk Brandewie echo '.balign STRUCT_ALIGNMENT'; \ 32755fe6da9SJames Hogan echo '.global __dtb_$(subst -,_,$(*F))_begin'; \ 32855fe6da9SJames Hogan echo '__dtb_$(subst -,_,$(*F))_begin:'; \ 329aab94339SDirk Brandewie echo '.incbin "$<" '; \ 33055fe6da9SJames Hogan echo '__dtb_$(subst -,_,$(*F))_end:'; \ 33155fe6da9SJames Hogan echo '.global __dtb_$(subst -,_,$(*F))_end'; \ 332aab94339SDirk Brandewie echo '.balign STRUCT_ALIGNMENT'; \ 333b79c6aa6SMasahiro Yamada} > $@ 334aab94339SDirk Brandewie 335a7f92419SMasahiro Yamada$(obj)/%.dtb.S: $(obj)/%.dtb FORCE 336a7f92419SMasahiro Yamada $(call if_changed,dt_S_dtb) 337aab94339SDirk Brandewie 338aab94339SDirk Brandewiequiet_cmd_dtc = DTC $@ 339dd7699e3SMasahiro Yamadacmd_dtc = $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ 34064bfc994SMasahiro Yamada $(DTC) -o $@ -b 0 \ 34150f9ddafSMasahiro Yamada $(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \ 342b0a4d8b3SIan Campbell -d $(depfile).dtc.tmp $(dtc-tmp) ; \ 343b0a4d8b3SIan Campbell cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) 3441da177e4SLinus Torvalds 345b8fc5b21SRob Herring$(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE 34678046fabSMasahiro Yamada $(call if_changed_dep,dtc) 3474f0e3a57SRob Herring 348ce88c9c7SViresh Kumar$(obj)/%.dtbo: $(src)/%.dts $(DTC) FORCE 349ce88c9c7SViresh Kumar $(call if_changed_dep,dtc) 350ce88c9c7SViresh Kumar 35115d16d6dSRob Herringquiet_cmd_fdtoverlay = DTOVL $@ 35215d16d6dSRob Herring cmd_fdtoverlay = $(objtree)/scripts/dtc/fdtoverlay -o $@ -i $(real-prereqs) 35315d16d6dSRob Herring 354bcf0c664SMasahiro Yamada$(multi-dtb-y): FORCE 35515d16d6dSRob Herring $(call if_changed,fdtoverlay) 356bcf0c664SMasahiro Yamada$(call multi_depend, $(multi-dtb-y), .dtb, -dtbs) 35715d16d6dSRob Herring 3584f0e3a57SRob HerringDT_CHECKER ?= dt-validate 359c59773d2SRob HerringDT_CHECKER_FLAGS ?= $(if $(DT_SCHEMA_FILES),,-m) 3604f0e3a57SRob HerringDT_BINDING_DIR := Documentation/devicetree/bindings 3612ba06cd8SRob Herring# DT_TMP_SCHEMA may be overridden from Documentation/devicetree/bindings/Makefile 362b8a49399SAndrei ZiureaevDT_TMP_SCHEMA ?= $(objtree)/$(DT_BINDING_DIR)/processed-schema.json 3634f0e3a57SRob Herring 3644f0e3a57SRob Herringquiet_cmd_dtb_check = CHECK $@ 365c59773d2SRob Herring cmd_dtb_check = $(DT_CHECKER) $(DT_CHECKER_FLAGS) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@ 3664f0e3a57SRob Herring 3677a049605SMasahiro Yamadadefine rule_dtc 36878046fabSMasahiro Yamada $(call cmd_and_fixdep,dtc) 369f5688663SMasahiro Yamada $(call cmd,dtb_check) 3704f0e3a57SRob Herringendef 3714f0e3a57SRob Herring 3724f0e3a57SRob Herring$(obj)/%.dt.yaml: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE 373285a65f1SMasahiro Yamada $(call if_changed_rule,dtc) 37490b335fbSStephen Warren 375b0a4d8b3SIan Campbelldtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp) 37622435f38SStephen Warren 377bc22c17eSAlain Knaff# Bzip2 378bc22c17eSAlain Knaff# --------------------------------------------------------------------------- 379bc22c17eSAlain Knaff 380d3dd3b5aSH. Peter Anvin# Bzip2 and LZMA do not include size in file... so we have to fake that; 381d3dd3b5aSH. Peter Anvin# append the size as a 32-bit littleendian number as gzip does. 3824a2ff67cSMichael Tokarevsize_append = printf $(shell \ 383d3dd3b5aSH. Peter Anvindec_size=0; \ 384afa974b7SMasahiro Yamadafor F in $(real-prereqs); do \ 385a670b0b4SMichael Forney fsize=$$($(CONFIG_SHELL) $(srctree)/scripts/file-size.sh $$F); \ 386d3dd3b5aSH. Peter Anvin dec_size=$$(expr $$dec_size + $$fsize); \ 387d3dd3b5aSH. Peter Anvindone; \ 3881373411aSJonathan Niederprintf "%08x\n" $$dec_size | \ 3891373411aSJonathan Nieder sed 's/\(..\)/\1 /g' | { \ 3901373411aSJonathan Nieder read ch0 ch1 ch2 ch3; \ 3911373411aSJonathan Nieder for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \ 3921373411aSJonathan Nieder printf '%s%03o' '\\' $$((0x$$ch)); \ 3931373411aSJonathan Nieder done; \ 3941373411aSJonathan Nieder } \ 395d3dd3b5aSH. Peter Anvin) 396bc22c17eSAlain Knaff 397bc22c17eSAlain Knaffquiet_cmd_bzip2 = BZIP2 $@ 398e4a42c82SDenis Efremov cmd_bzip2 = { cat $(real-prereqs) | $(KBZIP2) -9; $(size_append); } > $@ 399bc22c17eSAlain Knaff 400bc22c17eSAlain Knaff# Lzma 401bc22c17eSAlain Knaff# --------------------------------------------------------------------------- 402bc22c17eSAlain Knaff 403bc22c17eSAlain Knaffquiet_cmd_lzma = LZMA $@ 4048dfb61dcSDenis Efremov cmd_lzma = { cat $(real-prereqs) | $(LZMA) -9; $(size_append); } > $@ 4057dd65febSAlbin Tonnerre 4067dd65febSAlbin Tonnerrequiet_cmd_lzo = LZO $@ 407e4a42c82SDenis Efremov cmd_lzo = { cat $(real-prereqs) | $(KLZOP) -9; $(size_append); } > $@ 408d61931d8SBorislav Petkov 409e76e1fdfSKyungsik Leequiet_cmd_lz4 = LZ4 $@ 4108dfb61dcSDenis Efremov cmd_lz4 = { cat $(real-prereqs) | $(LZ4) -l -c1 stdin stdout; \ 411b79c6aa6SMasahiro Yamada $(size_append); } > $@ 412e76e1fdfSKyungsik Lee 413e3393645SStephen Warren# U-Boot mkimage 414e3393645SStephen Warren# --------------------------------------------------------------------------- 415e3393645SStephen Warren 416e3393645SStephen WarrenMKIMAGE := $(srctree)/scripts/mkuboot.sh 417e3393645SStephen Warren 418e3393645SStephen Warren# SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces 419e3393645SStephen Warren# the number of overrides in arch makefiles 420e3393645SStephen WarrenUIMAGE_ARCH ?= $(SRCARCH) 421e3393645SStephen WarrenUIMAGE_COMPRESSION ?= $(if $(2),$(2),none) 422e3393645SStephen WarrenUIMAGE_OPTS-y ?= 423e3393645SStephen WarrenUIMAGE_TYPE ?= kernel 424e3393645SStephen WarrenUIMAGE_LOADADDR ?= arch_must_set_this 425e3393645SStephen WarrenUIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR) 426e3393645SStephen WarrenUIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)' 427e3393645SStephen Warren 428786ac51aSMasahiro Yamadaquiet_cmd_uimage = UIMAGE $@ 429858805b3SMasahiro Yamada cmd_uimage = $(BASH) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \ 430e3393645SStephen Warren -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \ 431e3393645SStephen Warren -T $(UIMAGE_TYPE) \ 432e3393645SStephen Warren -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \ 433786ac51aSMasahiro Yamada -n $(UIMAGE_NAME) -d $< $@ 434e3393645SStephen Warren 43524fa0402SLasse Collin# XZ 43624fa0402SLasse Collin# --------------------------------------------------------------------------- 43724fa0402SLasse Collin# Use xzkern to compress the kernel image and xzmisc to compress other things. 43824fa0402SLasse Collin# 43924fa0402SLasse Collin# xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage 44024fa0402SLasse Collin# of the kernel decompressor. A BCJ filter is used if it is available for 44124fa0402SLasse Collin# the target architecture. xzkern also appends uncompressed size of the data 44224fa0402SLasse Collin# using size_append. The .xz format has the size information available at 44324fa0402SLasse Collin# the end of the file too, but it's in more complex format and it's good to 44424fa0402SLasse Collin# avoid changing the part of the boot code that reads the uncompressed size. 44524fa0402SLasse Collin# Note that the bytes added by size_append will make the xz tool think that 44624fa0402SLasse Collin# the file is corrupt. This is expected. 44724fa0402SLasse Collin# 44824fa0402SLasse Collin# xzmisc doesn't use size_append, so it can be used to create normal .xz 44924fa0402SLasse Collin# files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very 45024fa0402SLasse Collin# big dictionary would increase the memory usage too much in the multi-call 45124fa0402SLasse Collin# decompression mode. A BCJ filter isn't used either. 45224fa0402SLasse Collinquiet_cmd_xzkern = XZKERN $@ 453b956c7a6SHarald Seiler cmd_xzkern = { cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh; \ 454b79c6aa6SMasahiro Yamada $(size_append); } > $@ 45524fa0402SLasse Collin 45624fa0402SLasse Collinquiet_cmd_xzmisc = XZMISC $@ 4578dfb61dcSDenis Efremov cmd_xzmisc = cat $(real-prereqs) | $(XZ) --check=crc32 --lzma2=dict=1MiB > $@ 458ebf003f0SMatthias Kaehlcke 45948f7ddf7SNick Terrell# ZSTD 46048f7ddf7SNick Terrell# --------------------------------------------------------------------------- 46148f7ddf7SNick Terrell# Appends the uncompressed size of the data using size_append. The .zst 46248f7ddf7SNick Terrell# format has the size information available at the beginning of the file too, 46348f7ddf7SNick Terrell# but it's in a more complex format and it's good to avoid changing the part 46448f7ddf7SNick Terrell# of the boot code that reads the uncompressed size. 46548f7ddf7SNick Terrell# 46648f7ddf7SNick Terrell# Note that the bytes added by size_append will make the zstd tool think that 46748f7ddf7SNick Terrell# the file is corrupt. This is expected. 46848f7ddf7SNick Terrell# 46948f7ddf7SNick Terrell# zstd uses a maximum window size of 8 MB. zstd22 uses a maximum window size of 47048f7ddf7SNick Terrell# 128 MB. zstd22 is used for kernel compression because it is decompressed in a 47148f7ddf7SNick Terrell# single pass, so zstd doesn't need to allocate a window buffer. When streaming 47248f7ddf7SNick Terrell# decompression is used, like initramfs decompression, zstd22 should likely not 47348f7ddf7SNick Terrell# be used because it would require zstd to allocate a 128 MB buffer. 47448f7ddf7SNick Terrell 47548f7ddf7SNick Terrellquiet_cmd_zstd = ZSTD $@ 476*64d8aaa4SMasahiro Yamada cmd_zstd = cat $(real-prereqs) | $(ZSTD) -19 > $@ 47748f7ddf7SNick Terrell 47848f7ddf7SNick Terrellquiet_cmd_zstd22 = ZSTD22 $@ 47948f7ddf7SNick Terrell cmd_zstd22 = { cat $(real-prereqs) | $(ZSTD) -22 --ultra; $(size_append); } > $@ 48048f7ddf7SNick Terrell 481ebf003f0SMatthias Kaehlcke# ASM offsets 482ebf003f0SMatthias Kaehlcke# --------------------------------------------------------------------------- 483ebf003f0SMatthias Kaehlcke 484ebf003f0SMatthias Kaehlcke# Default sed regexp - multiline due to syntax constraints 485cf0c3e68SJeroen Hofstee# 486cf0c3e68SJeroen Hofstee# Use [:space:] because LLVM's integrated assembler inserts <tab> around 487cf0c3e68SJeroen Hofstee# the .ascii directive whereas GCC keeps the <space> as-is. 488ebf003f0SMatthias Kaehlckedefine sed-offsets 489cf0c3e68SJeroen Hofstee 's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \ 490cf0c3e68SJeroen Hofstee /^->/{s:->#\(.*\):/* \1 */:; \ 491ebf003f0SMatthias Kaehlcke s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ 492cf0c3e68SJeroen Hofstee s:->::; p;}' 493ebf003f0SMatthias Kaehlckeendef 494ebf003f0SMatthias Kaehlcke 495ebf003f0SMatthias Kaehlcke# Use filechk to avoid rebuilds when a header changes, but the resulting file 496ebf003f0SMatthias Kaehlcke# does not 497ebf003f0SMatthias Kaehlckedefine filechk_offsets 498ebf003f0SMatthias Kaehlcke echo "#ifndef $2"; \ 499ebf003f0SMatthias Kaehlcke echo "#define $2"; \ 500ebf003f0SMatthias Kaehlcke echo "/*"; \ 501ebf003f0SMatthias Kaehlcke echo " * DO NOT MODIFY."; \ 502ebf003f0SMatthias Kaehlcke echo " *"; \ 503ebf003f0SMatthias Kaehlcke echo " * This file was generated by Kbuild"; \ 504ebf003f0SMatthias Kaehlcke echo " */"; \ 505ebf003f0SMatthias Kaehlcke echo ""; \ 50643fee2b2SMasahiro Yamada sed -ne $(sed-offsets) < $<; \ 507ebf003f0SMatthias Kaehlcke echo ""; \ 508ad774086SMasahiro Yamada echo "#endif" 509ebf003f0SMatthias Kaehlckeendef 510