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) 112f7ab126SMiguel OjedaKBUILD_RUSTFLAGS += $(subdir-rustflags-y) 12720097d8SSam Ravnborg 131da177e4SLinus Torvalds# Figure out what we need to build from the various variables 141da177e4SLinus Torvalds# =========================================================================== 151da177e4SLinus Torvalds 161da177e4SLinus Torvalds# When an object is listed to be built compiled-in and modular, 171da177e4SLinus Torvalds# only build the compiled-in version 181da177e4SLinus Torvaldsobj-m := $(filter-out $(obj-y),$(obj-m)) 191da177e4SLinus Torvalds 201da177e4SLinus Torvalds# Libraries are always collected in one lib file. 211da177e4SLinus Torvalds# Filter out objects already built-in 221da177e4SLinus Torvaldslib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m))) 231da177e4SLinus Torvalds 240a8820e7SMasahiro Yamada# Subdirectories we need to descend into 250a8820e7SMasahiro Yamadasubdir-ym := $(sort $(subdir-y) $(subdir-m) \ 260a8820e7SMasahiro Yamada $(patsubst %/,%, $(filter %/, $(obj-y) $(obj-m)))) 270a8820e7SMasahiro Yamada 28b2c88554SMasahiro Yamada# Handle objects in subdirs: 29b2c88554SMasahiro Yamada# - If we encounter foo/ in $(obj-y), replace it by foo/built-in.a and 30b2c88554SMasahiro Yamada# foo/modules.order 31b2c88554SMasahiro Yamada# - If we encounter foo/ in $(obj-m), replace it by foo/modules.order 32b2c88554SMasahiro Yamada# 33b2c88554SMasahiro Yamada# Generate modules.order to determine modorder. Unfortunately, we don't have 34b2c88554SMasahiro Yamada# information about ordering between -y and -m subdirs. Just put -y's first. 35b2c88554SMasahiro Yamada 36b2c88554SMasahiro Yamadaifdef need-modorder 37b2c88554SMasahiro Yamadaobj-m := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m)) 38b2c88554SMasahiro Yamadaelse 39b2c88554SMasahiro Yamadaobj-m := $(filter-out %/, $(obj-m)) 40b2c88554SMasahiro Yamadaendif 41b2c88554SMasahiro Yamada 4256d58936SMasahiro Yamadaifdef need-builtin 43f49821eeSNicholas Pigginobj-y := $(patsubst %/, %/built-in.a, $(obj-y)) 4456d58936SMasahiro Yamadaelse 4556d58936SMasahiro Yamadaobj-y := $(filter-out %/, $(obj-y)) 4656d58936SMasahiro Yamadaendif 471da177e4SLinus Torvalds 4824507871SMasahiro Yamadaifdef need-dtbslist 4924507871SMasahiro Yamadadtb-y += $(addsuffix /dtbs-list, $(subdir-ym)) 5024507871SMasahiro Yamadaalways-y += dtbs-list 5124507871SMasahiro Yamadaendif 5224507871SMasahiro Yamada 5344f87191SMasahiro Yamada# Expand $(foo-objs) $(foo-y) etc. by replacing their individuals 5444f87191SMasahiro Yamadasuffix-search = $(strip $(foreach s, $3, $($(1:%$(strip $2)=%$s)))) 5544f87191SMasahiro Yamada# List composite targets that are constructed by combining other targets 5644f87191SMasahiro Yamadamulti-search = $(sort $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -), $m))) 5744f87191SMasahiro Yamada# List primitive targets that are compiled from source files 5844f87191SMasahiro Yamadareal-search = $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -), $(call suffix-search, $m, $2, $3), $m)) 5944f87191SMasahiro Yamada 6033e84f2eSMasahiro Yamada# If $(foo-objs), $(foo-y), $(foo-m), or $(foo-) exists, foo.o is a composite object 6144f87191SMasahiro Yamadamulti-obj-y := $(call multi-search, $(obj-y), .o, -objs -y) 6244f87191SMasahiro Yamadamulti-obj-m := $(call multi-search, $(obj-m), .o, -objs -y -m) 63a6601e01SMasahiro Yamadamulti-obj-ym := $(multi-obj-y) $(multi-obj-m) 641da177e4SLinus Torvalds 65f98fe47cSMasahiro Yamada# Replace multi-part objects by their individual parts, 66f98fe47cSMasahiro Yamada# including built-in.a from subdirectories 6744f87191SMasahiro Yamadareal-obj-y := $(call real-search, $(obj-y), .o, -objs -y) 6844f87191SMasahiro Yamadareal-obj-m := $(call real-search, $(obj-m), .o, -objs -y -m) 691da177e4SLinus Torvalds 705f2fb52fSMasahiro Yamadaalways-y += $(always-m) 715f2fb52fSMasahiro Yamada 72faabed29SMasahiro Yamada# hostprogs-always-y += foo 73faabed29SMasahiro Yamada# ... is a shorthand for 74faabed29SMasahiro Yamada# hostprogs += foo 75faabed29SMasahiro Yamada# always-y += foo 76faabed29SMasahiro Yamadahostprogs += $(hostprogs-always-y) $(hostprogs-always-m) 77faabed29SMasahiro Yamadaalways-y += $(hostprogs-always-y) $(hostprogs-always-m) 78faabed29SMasahiro Yamada 79faabed29SMasahiro Yamada# userprogs-always-y is likewise. 80faabed29SMasahiro Yamadauserprogs += $(userprogs-always-y) $(userprogs-always-m) 81faabed29SMasahiro Yamadaalways-y += $(userprogs-always-y) $(userprogs-always-m) 82faabed29SMasahiro Yamada 837e7962ddSMasahiro Yamada# DTB 847e7962ddSMasahiro Yamada# If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built 859ca29e41SViresh Kumardtb-$(CONFIG_OF_ALL_DTBS) += $(dtb-) 869ca29e41SViresh Kumar 87bcf0c664SMasahiro Yamada# Composite DTB (i.e. DTB constructed by overlay) 88bcf0c664SMasahiro Yamadamulti-dtb-y := $(call multi-search, $(dtb-y), .dtb, -dtbs) 89bcf0c664SMasahiro Yamada# Primitive DTB compiled from *.dts 90bcf0c664SMasahiro Yamadareal-dtb-y := $(call real-search, $(dtb-y), .dtb, -dtbs) 91cbe826b0SMasahiro Yamada# Base DTB that overlay is applied onto 92cbe826b0SMasahiro Yamadabase-dtb-y := $(filter %.dtb, $(call real-search, $(multi-dtb-y), .dtb, -dtbs)) 9315d16d6dSRob Herring 942047ace9SMasahiro Yamadaalways-y += $(dtb-y) 957e7962ddSMasahiro Yamada 961da177e4SLinus Torvalds# Add subdir path 971da177e4SLinus Torvalds 985750121aSMasahiro Yamadaifneq ($(obj),.) 991da177e4SLinus Torvaldsextra-y := $(addprefix $(obj)/,$(extra-y)) 1005f2fb52fSMasahiro Yamadaalways-y := $(addprefix $(obj)/,$(always-y)) 1011da177e4SLinus Torvaldstargets := $(addprefix $(obj)/,$(targets)) 1021da177e4SLinus Torvaldsobj-m := $(addprefix $(obj)/,$(obj-m)) 1031da177e4SLinus Torvaldslib-y := $(addprefix $(obj)/,$(lib-y)) 104f5f33681SMasahiro Yamadareal-obj-y := $(addprefix $(obj)/,$(real-obj-y)) 105f5f33681SMasahiro Yamadareal-obj-m := $(addprefix $(obj)/,$(real-obj-m)) 106a6601e01SMasahiro Yamadamulti-obj-m := $(addprefix $(obj)/, $(multi-obj-m)) 10724507871SMasahiro Yamadadtb-y := $(addprefix $(obj)/, $(dtb-y)) 108bcf0c664SMasahiro Yamadamulti-dtb-y := $(addprefix $(obj)/, $(multi-dtb-y)) 109bcf0c664SMasahiro Yamadareal-dtb-y := $(addprefix $(obj)/, $(real-dtb-y)) 1101da177e4SLinus Torvaldssubdir-ym := $(addprefix $(obj)/,$(subdir-ym)) 1115750121aSMasahiro Yamadaendif 1121da177e4SLinus Torvalds 113c0152e9aSMasahiro Yamada# Finds the multi-part object the current object will be linked into. 1141664a377SMasahiro Yamada# If the object belongs to two or more multi-part objects, list them all. 115a6601e01SMasahiro Yamadamodname-multi = $(sort $(foreach m,$(multi-obj-ym),\ 116d4452837SMasahiro Yamada $(if $(filter $*.o, $(call suffix-search, $m, .o, -objs -y -m)),$(m:.o=)))) 117c0152e9aSMasahiro Yamada 1185c816641SMasahiro Yamada__modname = $(or $(modname-multi),$(basetarget)) 1191664a377SMasahiro Yamada 1201664a377SMasahiro Yamadamodname = $(subst $(space),:,$(__modname)) 1211664a377SMasahiro Yamadamodfile = $(addprefix $(obj)/,$(__modname)) 122c0152e9aSMasahiro Yamada 12354b8ae66SMasahiro Yamada# target with $(obj)/ and its suffix stripped 12454b8ae66SMasahiro Yamadatarget-stem = $(basename $(patsubst $(obj)/%,%,$@)) 12554b8ae66SMasahiro Yamada 1261da177e4SLinus Torvalds# These flags are needed for modversions and compiling, so we define them here 1278fdc3fbbSCao jin# $(modname_flags) defines KBUILD_MODNAME as the name of the module it will 1281da177e4SLinus Torvalds# end up in (or would, if it gets compiled in) 129a8cccdd9SSami Tolvanenname-fix-token = $(subst $(comma),_,$(subst -,_,$1)) 130a8cccdd9SSami Tolvanenname-fix = $(call stringify,$(call name-fix-token,$1)) 131b42841b7SMichal Marekbasename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget)) 132a8cccdd9SSami Tolvanenmodname_flags = -DKBUILD_MODNAME=$(call name-fix,$(modname)) \ 133a8cccdd9SSami Tolvanen -D__KBUILD_MODNAME=kmod_$(call name-fix-token,$(modname)) 1341664a377SMasahiro Yamadamodfile_flags = -DKBUILD_MODFILE=$(call stringify,$(modfile)) 1351da177e4SLinus Torvalds 13615d5761aSMasahiro Yamada_c_flags = $(filter-out $(CFLAGS_REMOVE_$(target-stem).o), \ 13715d5761aSMasahiro Yamada $(filter-out $(ccflags-remove-y), \ 13815d5761aSMasahiro Yamada $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(ccflags-y)) \ 13915d5761aSMasahiro Yamada $(CFLAGS_$(target-stem).o)) 1402f7ab126SMiguel Ojeda_rust_flags = $(filter-out $(RUSTFLAGS_REMOVE_$(target-stem).o), \ 1412f7ab126SMiguel Ojeda $(filter-out $(rustflags-remove-y), \ 1422f7ab126SMiguel Ojeda $(KBUILD_RUSTFLAGS) $(rustflags-y)) \ 1432f7ab126SMiguel Ojeda $(RUSTFLAGS_$(target-stem).o)) 14415d5761aSMasahiro Yamada_a_flags = $(filter-out $(AFLAGS_REMOVE_$(target-stem).o), \ 14515d5761aSMasahiro Yamada $(filter-out $(asflags-remove-y), \ 14615d5761aSMasahiro Yamada $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(asflags-y)) \ 14715d5761aSMasahiro Yamada $(AFLAGS_$(target-stem).o)) 14854b8ae66SMasahiro Yamada_cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(target-stem).lds) 1491da177e4SLinus Torvalds 1502521f2c2SPeter Oberparleiter# 1512521f2c2SPeter Oberparleiter# Enable gcov profiling flags for a file, directory or for all files depending 1522521f2c2SPeter Oberparleiter# on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL 1532521f2c2SPeter Oberparleiter# (in this order) 1542521f2c2SPeter Oberparleiter# 1552521f2c2SPeter Oberparleiterifeq ($(CONFIG_GCOV_KERNEL),y) 1562521f2c2SPeter Oberparleiter_c_flags += $(if $(patsubst n%,, \ 1579c2d1328SMasahiro Yamada $(GCOV_PROFILE_$(target-stem).o)$(GCOV_PROFILE)$(if $(is-kernel-object),$(CONFIG_GCOV_PROFILE_ALL))), \ 1582521f2c2SPeter Oberparleiter $(CFLAGS_GCOV)) 1592521f2c2SPeter Oberparleiterendif 1602521f2c2SPeter Oberparleiter 1610b24beccSAndrey Ryabinin# 1620b24beccSAndrey Ryabinin# Enable address sanitizer flags for kernel except some files or directories 1630b24beccSAndrey Ryabinin# we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE) 1640b24beccSAndrey Ryabinin# 1650b24beccSAndrey Ryabininifeq ($(CONFIG_KASAN),y) 1660fea6e9aSAndrey Konovalovifneq ($(CONFIG_KASAN_HW_TAGS),y) 1670b24beccSAndrey Ryabinin_c_flags += $(if $(patsubst n%,, \ 1689c2d1328SMasahiro Yamada $(KASAN_SANITIZE_$(target-stem).o)$(KASAN_SANITIZE)$(is-kernel-object)), \ 1690e410e15SAndrey Konovalov $(CFLAGS_KASAN), $(CFLAGS_KASAN_NOSANITIZE)) 1700b24beccSAndrey Ryabininendif 1710fea6e9aSAndrey Konovalovendif 1720b24beccSAndrey Ryabinin 173f80be457SAlexander Potapenkoifeq ($(CONFIG_KMSAN),y) 174f80be457SAlexander Potapenko_c_flags += $(if $(patsubst n%,, \ 1759c2d1328SMasahiro Yamada $(KMSAN_SANITIZE_$(target-stem).o)$(KMSAN_SANITIZE)$(is-kernel-object)), \ 176f80be457SAlexander Potapenko $(CFLAGS_KMSAN)) 177f80be457SAlexander Potapenko_c_flags += $(if $(patsubst n%,, \ 1789c2d1328SMasahiro Yamada $(KMSAN_ENABLE_CHECKS_$(target-stem).o)$(KMSAN_ENABLE_CHECKS)$(is-kernel-object)), \ 179f80be457SAlexander Potapenko , -mllvm -msan-disable-checks=1) 180f80be457SAlexander Potapenkoendif 181f80be457SAlexander Potapenko 182c6d30853SAndrey Ryabininifeq ($(CONFIG_UBSAN),y) 183c6d30853SAndrey Ryabinin_c_flags += $(if $(patsubst n%,, \ 1849c2d1328SMasahiro Yamada $(UBSAN_SANITIZE_$(target-stem).o)$(UBSAN_SANITIZE)$(is-kernel-object)), \ 185c6d30853SAndrey Ryabinin $(CFLAGS_UBSAN)) 186557f8c58SKees Cook_c_flags += $(if $(patsubst n%,, \ 1879c2d1328SMasahiro Yamada $(UBSAN_SIGNED_WRAP_$(target-stem).o)$(UBSAN_SANITIZE_$(target-stem).o)$(UBSAN_SIGNED_WRAP)$(UBSAN_SANITIZE)$(is-kernel-object)), \ 188557f8c58SKees Cook $(CFLAGS_UBSAN_SIGNED_WRAP)) 189c6d30853SAndrey Ryabininendif 190c6d30853SAndrey Ryabinin 1915c9a8750SDmitry Vyukovifeq ($(CONFIG_KCOV),y) 1925c9a8750SDmitry Vyukov_c_flags += $(if $(patsubst n%,, \ 1939c2d1328SMasahiro Yamada $(KCOV_INSTRUMENT_$(target-stem).o)$(KCOV_INSTRUMENT)$(if $(is-kernel-object),$(CONFIG_KCOV_INSTRUMENT_ALL))), \ 1945c9a8750SDmitry Vyukov $(CFLAGS_KCOV)) 1955c9a8750SDmitry Vyukovendif 1965c9a8750SDmitry Vyukov 197dfd402a4SMarco Elver# 198dfd402a4SMarco Elver# Enable KCSAN flags except some files or directories we don't want to check 199dfd402a4SMarco Elver# (depends on variables KCSAN_SANITIZE_obj.o, KCSAN_SANITIZE) 200dfd402a4SMarco Elver# 201dfd402a4SMarco Elverifeq ($(CONFIG_KCSAN),y) 202dfd402a4SMarco Elver_c_flags += $(if $(patsubst n%,, \ 2039c2d1328SMasahiro Yamada $(KCSAN_SANITIZE_$(target-stem).o)$(KCSAN_SANITIZE)$(is-kernel-object)), \ 204dfd402a4SMarco Elver $(CFLAGS_KCSAN)) 20548c9e28eSMarco Elver# Some uninstrumented files provide implied barriers required to avoid false 20648c9e28eSMarco Elver# positives: set KCSAN_INSTRUMENT_BARRIERS for barrier instrumentation only. 20748c9e28eSMarco Elver_c_flags += $(if $(patsubst n%,, \ 208bf48d9b7SMasahiro Yamada $(KCSAN_INSTRUMENT_BARRIERS_$(target-stem).o)$(KCSAN_INSTRUMENT_BARRIERS)n), \ 20948c9e28eSMarco Elver -D__KCSAN_INSTRUMENT_BARRIERS__) 210dfd402a4SMarco Elverendif 211dfd402a4SMarco Elver 212b1992c37SMasahiro Yamada# $(src) for including checkin headers from generated source files 213b1992c37SMasahiro Yamada# $(obj) for including generated headers from checkin source files 21458156ba4SMasahiro Yamadaifeq ($(KBUILD_EXTMOD),) 215051f278eSMasahiro Yamadaifdef building_out_of_srctree 216b1992c37SMasahiro Yamada_c_flags += $(addprefix -I, $(src) $(obj)) 217b1992c37SMasahiro Yamada_a_flags += $(addprefix -I, $(src) $(obj)) 218b1992c37SMasahiro Yamada_cpp_flags += $(addprefix -I, $(src) $(obj)) 2191da177e4SLinus Torvaldsendif 22058156ba4SMasahiro Yamadaendif 2211da177e4SLinus Torvalds 2229c2d1328SMasahiro Yamada# If $(is-kernel-object) is 'y', this object will be linked to vmlinux or modules 2239c2d1328SMasahiro Yamadais-kernel-object = $(or $(part-of-builtin),$(part-of-module)) 2249c2d1328SMasahiro Yamada 2259c2d1328SMasahiro Yamadapart-of-builtin = $(if $(filter $(basename $@).o, $(real-obj-y) $(lib-y)),y) 226eb27ea5cSMasahiro Yamadapart-of-module = $(if $(filter $(basename $@).o, $(real-obj-m)),y) 227eb27ea5cSMasahiro Yamadaquiet_modtag = $(if $(part-of-module),[M], ) 228eb27ea5cSMasahiro Yamada 229eb27ea5cSMasahiro Yamadamodkern_cflags = \ 230eb27ea5cSMasahiro Yamada $(if $(part-of-module), \ 231eb27ea5cSMasahiro Yamada $(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \ 2321664a377SMasahiro Yamada $(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL) $(modfile_flags)) 233eb27ea5cSMasahiro Yamada 2342f7ab126SMiguel Ojedamodkern_rustflags = \ 2352f7ab126SMiguel Ojeda $(if $(part-of-module), \ 2362f7ab126SMiguel Ojeda $(KBUILD_RUSTFLAGS_MODULE) $(RUSTFLAGS_MODULE), \ 2372f7ab126SMiguel Ojeda $(KBUILD_RUSTFLAGS_KERNEL) $(RUSTFLAGS_KERNEL)) 2382f7ab126SMiguel Ojeda 239eb27ea5cSMasahiro Yamadamodkern_aflags = $(if $(part-of-module), \ 240eb27ea5cSMasahiro Yamada $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE), \ 241eb27ea5cSMasahiro Yamada $(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL)) 242eb27ea5cSMasahiro Yamada 24330a77297SMasahiro Yamadac_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ 244a95b37e2SMasahiro Yamada -include $(srctree)/include/linux/compiler_types.h \ 245cdd750bfSMasahiro Yamada $(_c_flags) $(modkern_cflags) \ 246b42841b7SMichal Marek $(basename_flags) $(modname_flags) 2471da177e4SLinus Torvalds 2482f7ab126SMiguel Ojedarust_flags = $(_rust_flags) $(modkern_rustflags) @$(objtree)/include/generated/rustc_cfg 2492f7ab126SMiguel Ojeda 25030a77297SMasahiro Yamadaa_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ 251cdd750bfSMasahiro Yamada $(_a_flags) $(modkern_aflags) 2521da177e4SLinus Torvalds 25330a77297SMasahiro Yamadacpp_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ 254cdd750bfSMasahiro Yamada $(_cpp_flags) 2551da177e4SLinus Torvalds 256d503ac53SMasahiro Yamadald_flags = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) 2571da177e4SLinus Torvalds 25850f9ddafSMasahiro YamadaDTC_INCLUDE := $(srctree)/scripts/dtc/include-prefixes 25950f9ddafSMasahiro Yamada 26030a77297SMasahiro Yamadadtc_cpp_flags = -Wp,-MMD,$(depfile).pre.tmp -nostdinc \ 26150f9ddafSMasahiro Yamada $(addprefix -I,$(DTC_INCLUDE)) \ 262e570d7c1SStephen Warren -undef -D__DTS__ 263e570d7c1SStephen Warren 264b42d2306SMasahiro Yamadaifdef CONFIG_OBJTOOL 265b42d2306SMasahiro Yamada 266b42d2306SMasahiro Yamadaobjtool := $(objtree)/tools/objtool/objtool 267b42d2306SMasahiro Yamada 2689ec6ab6eSMasahiro Yamadaobjtool-args-$(CONFIG_HAVE_JUMP_LABEL_HACK) += --hacks=jump_label 2699ec6ab6eSMasahiro Yamadaobjtool-args-$(CONFIG_HAVE_NOINSTR_HACK) += --hacks=noinstr 2705fa31af3SBreno Leitaoobjtool-args-$(CONFIG_MITIGATION_CALL_DEPTH_TRACKING) += --hacks=skylake 2719ec6ab6eSMasahiro Yamadaobjtool-args-$(CONFIG_X86_KERNEL_IBT) += --ibt 272931ab636SPeter Zijlstraobjtool-args-$(CONFIG_FINEIBT) += --cfi 2739ec6ab6eSMasahiro Yamadaobjtool-args-$(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL) += --mcount 274280981d6SSathvika Vasireddyifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL 275280981d6SSathvika Vasireddyobjtool-args-$(CONFIG_HAVE_OBJTOOL_NOP_MCOUNT) += --mnop 276280981d6SSathvika Vasireddyendif 2779ec6ab6eSMasahiro Yamadaobjtool-args-$(CONFIG_UNWINDER_ORC) += --orc 278aefb2f2eSBreno Leitaoobjtool-args-$(CONFIG_MITIGATION_RETPOLINE) += --retpoline 2790911b8c5SBreno Leitaoobjtool-args-$(CONFIG_MITIGATION_RETHUNK) += --rethunk 2807b75782fSBreno Leitaoobjtool-args-$(CONFIG_MITIGATION_SLS) += --sls 2819ec6ab6eSMasahiro Yamadaobjtool-args-$(CONFIG_STACK_VALIDATION) += --stackval 2829ec6ab6eSMasahiro Yamadaobjtool-args-$(CONFIG_HAVE_STATIC_CALL_INLINE) += --static-call 2839ec6ab6eSMasahiro Yamadaobjtool-args-$(CONFIG_HAVE_UACCESS_VALIDATION) += --uaccess 2849ec6ab6eSMasahiro Yamadaobjtool-args-$(CONFIG_GCOV_KERNEL) += --no-unreachable 285b341b20dSPeter Zijlstraobjtool-args-$(CONFIG_PREFIX_SYMBOLS) += --prefix=$(CONFIG_FUNCTION_PADDING_BYTES) 2869ec6ab6eSMasahiro Yamada 2879ec6ab6eSMasahiro Yamadaobjtool-args = $(objtool-args-y) \ 288b42d2306SMasahiro Yamada $(if $(delay-objtool), --link) \ 2899ec6ab6eSMasahiro Yamada $(if $(part-of-module), --module) 290b42d2306SMasahiro Yamada 291b42d2306SMasahiro Yamadadelay-objtool := $(or $(CONFIG_LTO_CLANG),$(CONFIG_X86_KERNEL_IBT)) 292b42d2306SMasahiro Yamada 2939ec6ab6eSMasahiro Yamadacmd_objtool = $(if $(objtool-enabled), ; $(objtool) $(objtool-args) $@) 294b42d2306SMasahiro Yamadacmd_gen_objtooldep = $(if $(objtool-enabled), { echo ; echo '$@: $$(wildcard $(objtool))' ; } >> $(dot-target).cmd) 295b42d2306SMasahiro Yamada 296b42d2306SMasahiro Yamadaendif # CONFIG_OBJTOOL 297b42d2306SMasahiro Yamada 298c8589d1eSMasahiro Yamada# Useful for describing the dependency of composite objects 299c8589d1eSMasahiro Yamada# Usage: 300c8589d1eSMasahiro Yamada# $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add) 301c8589d1eSMasahiro Yamadadefine multi_depend 302f97cf399SMasahiro Yamada$(foreach m, $1, \ 303f97cf399SMasahiro Yamada $(eval $m: \ 304f97cf399SMasahiro Yamada $(addprefix $(obj)/, $(call suffix-search, $(patsubst $(obj)/%,%,$m), $2, $3)))) 305c8589d1eSMasahiro Yamadaendef 306c8589d1eSMasahiro Yamada 307a5575df5SMasahiro Yamada# Copy a file 3081da177e4SLinus Torvalds# =========================================================================== 3093787b7daSMasahiro Yamada# 'cp' preserves permissions. If you use it to copy a file in read-only srctree, 3103787b7daSMasahiro Yamada# the copy would be read-only as well, leading to an error when executing the 3113787b7daSMasahiro Yamada# rule next time. Use 'cat' instead in order to generate a writable file. 312a5575df5SMasahiro Yamadaquiet_cmd_copy = COPY $@ 313a5575df5SMasahiro Yamada cmd_copy = cat $< > $@ 3141da177e4SLinus Torvalds 315991d76c9SArnaud Lacombe$(obj)/%: $(src)/%_shipped 316a5575df5SMasahiro Yamada $(call cmd,copy) 3171da177e4SLinus Torvalds 3181da177e4SLinus Torvalds# Commands useful for building a boot image 3191da177e4SLinus Torvalds# =========================================================================== 3201da177e4SLinus Torvalds# 3211da177e4SLinus Torvalds# Use as following: 3221da177e4SLinus Torvalds# 3231da177e4SLinus Torvalds# target: source(s) FORCE 3241da177e4SLinus Torvalds# $(if_changed,ld/objcopy/gzip) 3251da177e4SLinus Torvalds# 3262047ace9SMasahiro Yamada# and add target to 'targets' so that we know we have to 3271da177e4SLinus Torvalds# read in the saved command line 3281da177e4SLinus Torvalds 3291da177e4SLinus Torvalds# Linking 3301da177e4SLinus Torvalds# --------------------------------------------------------------------------- 3311da177e4SLinus Torvalds 3321da177e4SLinus Torvaldsquiet_cmd_ld = LD $@ 333afa974b7SMasahiro Yamada cmd_ld = $(LD) $(ld_flags) $(real-prereqs) -o $@ 3341da177e4SLinus Torvalds 335898f5a00SMasahiro Yamada# Archive 336898f5a00SMasahiro Yamada# --------------------------------------------------------------------------- 337898f5a00SMasahiro Yamada 338898f5a00SMasahiro Yamadaquiet_cmd_ar = AR $@ 33913dc8c02SMasahiro Yamada cmd_ar = rm -f $@; $(AR) cDPrsT $@ $(real-prereqs) 340898f5a00SMasahiro Yamada 3411da177e4SLinus Torvalds# Objcopy 3421da177e4SLinus Torvalds# --------------------------------------------------------------------------- 3431da177e4SLinus Torvalds 3441da177e4SLinus Torvaldsquiet_cmd_objcopy = OBJCOPY $@ 3451da177e4SLinus Torvaldscmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ 3461da177e4SLinus Torvalds 3471da177e4SLinus Torvalds# Gzip 3481da177e4SLinus Torvalds# --------------------------------------------------------------------------- 3491da177e4SLinus Torvalds 3501da177e4SLinus Torvaldsquiet_cmd_gzip = GZIP $@ 351e4a42c82SDenis Efremov cmd_gzip = cat $(real-prereqs) | $(KGZIP) -n -f -9 > $@ 3521da177e4SLinus Torvalds 353aab94339SDirk Brandewie# DTC 354aab94339SDirk Brandewie# --------------------------------------------------------------------------- 3556b22b3d1SRob HerringDTC ?= $(objtree)/scripts/dtc/dtc 356a8528f7fSRob HerringDTC_FLAGS += \ 357ae5a16c8SAlexandre Torgue -Wno-unique_unit_address 358aab94339SDirk Brandewie 359bc553986SRob Herring# Disable noisy checks by default 360e27128dbSMasahiro Yamadaifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),) 3618654cb8dSRob HerringDTC_FLAGS += -Wno-unit_address_vs_reg \ 3624fd98e37SRob Herring -Wno-avoid_unnecessary_addr_size \ 3634fd98e37SRob Herring -Wno-alias_paths \ 36474656b68SRob Herring -Wno-graph_child_address \ 365ae5a16c8SAlexandre Torgue -Wno-simple_bus_reg 366ae5a16c8SAlexandre Torgueelse 367ae5a16c8SAlexandre TorgueDTC_FLAGS += \ 368ae5a16c8SAlexandre Torgue -Wunique_unit_address_if_enabled 369bc553986SRob Herringendif 370bc553986SRob Herring 371e27128dbSMasahiro Yamadaifneq ($(findstring 2,$(KBUILD_EXTRA_WARN)),) 3728654cb8dSRob HerringDTC_FLAGS += -Wnode_name_chars_strict \ 3733eb619b2SRob Herring -Wproperty_name_chars_strict \ 374ae5a16c8SAlexandre Torgue -Wunique_unit_address 375aab94339SDirk Brandewieendif 376aab94339SDirk Brandewie 377223390b1SMasahiro YamadaDTC_FLAGS += $(DTC_FLAGS_$(target-stem)) 378331f7416SFrank Rowand 379bcf0c664SMasahiro Yamada# Set -@ if the target is a base DTB that overlay is applied onto 380bcf0c664SMasahiro YamadaDTC_FLAGS += $(if $(filter $(patsubst $(obj)/%,%,$@), $(base-dtb-y)), -@) 381bcf0c664SMasahiro Yamada 382aab94339SDirk Brandewie# Generate an assembly file to wrap the output of the device tree compiler 383ecd42fbaSMasahiro Yamadaquiet_cmd_wrap_S_dtb = WRAP $@ 384ecd42fbaSMasahiro Yamada cmd_wrap_S_dtb = { \ 385ecd42fbaSMasahiro Yamada symbase=__$(patsubst .%,%,$(suffix $<))_$(subst -,_,$(notdir $*)); \ 386aab94339SDirk Brandewie echo '\#include <asm-generic/vmlinux.lds.h>'; \ 387aab94339SDirk Brandewie echo '.section .dtb.init.rodata,"a"'; \ 388aab94339SDirk Brandewie echo '.balign STRUCT_ALIGNMENT'; \ 389ecd42fbaSMasahiro Yamada echo ".global $${symbase}_begin"; \ 390ecd42fbaSMasahiro Yamada echo "$${symbase}_begin:"; \ 391aab94339SDirk Brandewie echo '.incbin "$<" '; \ 392ecd42fbaSMasahiro Yamada echo ".global $${symbase}_end"; \ 393ecd42fbaSMasahiro Yamada echo "$${symbase}_end:"; \ 394aab94339SDirk Brandewie echo '.balign STRUCT_ALIGNMENT'; \ 395b79c6aa6SMasahiro Yamada } > $@ 396aab94339SDirk Brandewie 397a7f92419SMasahiro Yamada$(obj)/%.dtb.S: $(obj)/%.dtb FORCE 398ecd42fbaSMasahiro Yamada $(call if_changed,wrap_S_dtb) 399941214a5SAndrew Davis 400941214a5SAndrew Davis$(obj)/%.dtbo.S: $(obj)/%.dtbo FORCE 401ecd42fbaSMasahiro Yamada $(call if_changed,wrap_S_dtb) 402941214a5SAndrew Davis 403*8fcd8d1eSMasahiro Yamadaquiet_dtb_check_tag = $(if $(dtb-check-enabled),[C], ) 404*8fcd8d1eSMasahiro Yamadacmd_dtb_check = $(if $(dtb-check-enabled),; $(DT_CHECKER) $(DT_CHECKER_FLAGS) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@ || true) 405*8fcd8d1eSMasahiro Yamada 406*8fcd8d1eSMasahiro Yamadaquiet_cmd_dtc = DTC $(quiet_dtb_check_tag) $@ 407dd7699e3SMasahiro Yamadacmd_dtc = $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ 40864bfc994SMasahiro Yamada $(DTC) -o $@ -b 0 \ 40950f9ddafSMasahiro Yamada $(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \ 410b0a4d8b3SIan Campbell -d $(depfile).dtc.tmp $(dtc-tmp) ; \ 411*8fcd8d1eSMasahiro Yamada cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) \ 412*8fcd8d1eSMasahiro Yamada $(cmd_dtb_check) 41349636c56SDmitry Baryshkov 414712aba55SMasahiro Yamada# NOTE: 415712aba55SMasahiro Yamada# Do not replace $(filter %.dtb %.dtbo, $^) with $(real-prereqs). When a single 416712aba55SMasahiro Yamada# DTB is turned into a multi-blob DTB, $^ will contain header file dependencies 417712aba55SMasahiro Yamada# recorded in the .*.cmd file. 418*8fcd8d1eSMasahiro Yamadaquiet_cmd_fdtoverlay = OVL $(quiet_dtb_check_tag) $@ 419*8fcd8d1eSMasahiro Yamada cmd_fdtoverlay = $(objtree)/scripts/dtc/fdtoverlay -o $@ -i $(filter %.dtb %.dtbo, $^) $(cmd_dtb_check) 42015d16d6dSRob Herring 421bcf0c664SMasahiro Yamada$(multi-dtb-y): FORCE 42215d16d6dSRob Herring $(call if_changed,fdtoverlay) 423bcf0c664SMasahiro Yamada$(call multi_depend, $(multi-dtb-y), .dtb, -dtbs) 42415d16d6dSRob Herring 425604a57baSRob Herringifneq ($(CHECK_DTBS),) 4264f0e3a57SRob HerringDT_CHECKER ?= dt-validate 4272783a7f5SRob HerringDT_CHECKER_FLAGS ?= $(if $(DT_SCHEMA_FILES),-l $(DT_SCHEMA_FILES),-m) 4284f0e3a57SRob HerringDT_BINDING_DIR := Documentation/devicetree/bindings 4292783a7f5SRob HerringDT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.json 430*8fcd8d1eSMasahiro Yamadadtb-check-enabled = $(if $(filter %.dtb, $@),y) 431ef8795f3SRob Herringendif 4324f0e3a57SRob Herring 4339a0ebe50SMasahiro Yamada$(obj)/%.dtb: $(obj)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE 434*8fcd8d1eSMasahiro Yamada $(call if_changed_dep,dtc) 43590b335fbSStephen Warren 436363547d2SAndrew Davis$(obj)/%.dtbo: $(src)/%.dtso $(DTC) FORCE 437363547d2SAndrew Davis $(call if_changed_dep,dtc) 438363547d2SAndrew Davis 439b0a4d8b3SIan Campbelldtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp) 44022435f38SStephen Warren 441bc22c17eSAlain Knaff# Bzip2 442bc22c17eSAlain Knaff# --------------------------------------------------------------------------- 443bc22c17eSAlain Knaff 444d3dd3b5aSH. Peter Anvin# Bzip2 and LZMA do not include size in file... so we have to fake that; 445d3dd3b5aSH. Peter Anvin# append the size as a 32-bit littleendian number as gzip does. 4464a2ff67cSMichael Tokarevsize_append = printf $(shell \ 447d3dd3b5aSH. Peter Anvindec_size=0; \ 448afa974b7SMasahiro Yamadafor F in $(real-prereqs); do \ 449a670b0b4SMichael Forney fsize=$$($(CONFIG_SHELL) $(srctree)/scripts/file-size.sh $$F); \ 450d3dd3b5aSH. Peter Anvin dec_size=$$(expr $$dec_size + $$fsize); \ 451d3dd3b5aSH. Peter Anvindone; \ 4521373411aSJonathan Niederprintf "%08x\n" $$dec_size | \ 4531373411aSJonathan Nieder sed 's/\(..\)/\1 /g' | { \ 4541373411aSJonathan Nieder read ch0 ch1 ch2 ch3; \ 4551373411aSJonathan Nieder for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \ 4561373411aSJonathan Nieder printf '%s%03o' '\\' $$((0x$$ch)); \ 4571373411aSJonathan Nieder done; \ 4581373411aSJonathan Nieder } \ 459d3dd3b5aSH. Peter Anvin) 460bc22c17eSAlain Knaff 461c4d7f40bSMasahiro Yamadaquiet_cmd_file_size = GEN $@ 462c4d7f40bSMasahiro Yamada cmd_file_size = $(size_append) > $@ 463c4d7f40bSMasahiro Yamada 464bc22c17eSAlain Knaffquiet_cmd_bzip2 = BZIP2 $@ 4657ce7e984SMasahiro Yamada cmd_bzip2 = cat $(real-prereqs) | $(KBZIP2) -9 > $@ 4667ce7e984SMasahiro Yamada 4677ce7e984SMasahiro Yamadaquiet_cmd_bzip2_with_size = BZIP2 $@ 4687ce7e984SMasahiro Yamada cmd_bzip2_with_size = { cat $(real-prereqs) | $(KBZIP2) -9; $(size_append); } > $@ 469bc22c17eSAlain Knaff 470bc22c17eSAlain Knaff# Lzma 471bc22c17eSAlain Knaff# --------------------------------------------------------------------------- 472bc22c17eSAlain Knaff 473bc22c17eSAlain Knaffquiet_cmd_lzma = LZMA $@ 4747ce7e984SMasahiro Yamada cmd_lzma = cat $(real-prereqs) | $(LZMA) -9 > $@ 4757ce7e984SMasahiro Yamada 4767ce7e984SMasahiro Yamadaquiet_cmd_lzma_with_size = LZMA $@ 4777ce7e984SMasahiro Yamada cmd_lzma_with_size = { cat $(real-prereqs) | $(LZMA) -9; $(size_append); } > $@ 4787dd65febSAlbin Tonnerre 4797dd65febSAlbin Tonnerrequiet_cmd_lzo = LZO $@ 4807ce7e984SMasahiro Yamada cmd_lzo = cat $(real-prereqs) | $(KLZOP) -9 > $@ 4817ce7e984SMasahiro Yamada 4827ce7e984SMasahiro Yamadaquiet_cmd_lzo_with_size = LZO $@ 4837ce7e984SMasahiro Yamada cmd_lzo_with_size = { cat $(real-prereqs) | $(KLZOP) -9; $(size_append); } > $@ 484d61931d8SBorislav Petkov 485e76e1fdfSKyungsik Leequiet_cmd_lz4 = LZ4 $@ 4867ce7e984SMasahiro Yamada cmd_lz4 = cat $(real-prereqs) | $(LZ4) -l -c1 stdin stdout > $@ 4877ce7e984SMasahiro Yamada 4887ce7e984SMasahiro Yamadaquiet_cmd_lz4_with_size = LZ4 $@ 4897ce7e984SMasahiro Yamada cmd_lz4_with_size = { cat $(real-prereqs) | $(LZ4) -l -c1 stdin stdout; \ 490b79c6aa6SMasahiro Yamada $(size_append); } > $@ 491e76e1fdfSKyungsik Lee 492e3393645SStephen Warren# U-Boot mkimage 493e3393645SStephen Warren# --------------------------------------------------------------------------- 494e3393645SStephen Warren 495e3393645SStephen WarrenMKIMAGE := $(srctree)/scripts/mkuboot.sh 496e3393645SStephen Warren 497e3393645SStephen Warren# SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces 498e3393645SStephen Warren# the number of overrides in arch makefiles 499e3393645SStephen WarrenUIMAGE_ARCH ?= $(SRCARCH) 5005c816641SMasahiro YamadaUIMAGE_COMPRESSION ?= $(or $(2),none) 501e3393645SStephen WarrenUIMAGE_OPTS-y ?= 502e3393645SStephen WarrenUIMAGE_TYPE ?= kernel 503e3393645SStephen WarrenUIMAGE_LOADADDR ?= arch_must_set_this 504e3393645SStephen WarrenUIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR) 50576020731SSimon GlassUIMAGE_NAME ?= Linux-$(KERNELRELEASE) 506e3393645SStephen Warren 507786ac51aSMasahiro Yamadaquiet_cmd_uimage = UIMAGE $@ 508858805b3SMasahiro Yamada cmd_uimage = $(BASH) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \ 509e3393645SStephen Warren -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \ 510e3393645SStephen Warren -T $(UIMAGE_TYPE) \ 511e3393645SStephen Warren -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \ 51276020731SSimon Glass -n '$(UIMAGE_NAME)' -d $< $@ 513e3393645SStephen Warren 5147a23b027SSimon Glass# Flat Image Tree (FIT) 5157a23b027SSimon Glass# This allows for packaging of a kernel and all devicetrees files, using 5167a23b027SSimon Glass# compression. 5177a23b027SSimon Glass# --------------------------------------------------------------------------- 5187a23b027SSimon Glass 5197a23b027SSimon GlassMAKE_FIT := $(srctree)/scripts/make_fit.py 5207a23b027SSimon Glass 5217a23b027SSimon Glass# Use this to override the compression algorithm 5227a23b027SSimon GlassFIT_COMPRESSION ?= gzip 5237a23b027SSimon Glass 5247a23b027SSimon Glassquiet_cmd_fit = FIT $@ 5257a23b027SSimon Glass cmd_fit = $(MAKE_FIT) -o $@ --arch $(UIMAGE_ARCH) --os linux \ 5267a23b027SSimon Glass --name '$(UIMAGE_NAME)' \ 5277a23b027SSimon Glass $(if $(findstring 1,$(KBUILD_VERBOSE)),-v) \ 52817c31adeSChen-Yu Tsai $(if $(FIT_DECOMPOSE_DTBS),--decompose-dtbs) \ 5297a23b027SSimon Glass --compress $(FIT_COMPRESSION) -k $< @$(word 2,$^) 5307a23b027SSimon Glass 53124fa0402SLasse Collin# XZ 53224fa0402SLasse Collin# --------------------------------------------------------------------------- 53324fa0402SLasse Collin# Use xzkern to compress the kernel image and xzmisc to compress other things. 53424fa0402SLasse Collin# 53524fa0402SLasse Collin# xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage 53624fa0402SLasse Collin# of the kernel decompressor. A BCJ filter is used if it is available for 53724fa0402SLasse Collin# the target architecture. xzkern also appends uncompressed size of the data 53824fa0402SLasse Collin# using size_append. The .xz format has the size information available at 53924fa0402SLasse Collin# the end of the file too, but it's in more complex format and it's good to 54024fa0402SLasse Collin# avoid changing the part of the boot code that reads the uncompressed size. 54124fa0402SLasse Collin# Note that the bytes added by size_append will make the xz tool think that 54224fa0402SLasse Collin# the file is corrupt. This is expected. 54324fa0402SLasse Collin# 54424fa0402SLasse Collin# xzmisc doesn't use size_append, so it can be used to create normal .xz 54524fa0402SLasse Collin# files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very 54624fa0402SLasse Collin# big dictionary would increase the memory usage too much in the multi-call 54724fa0402SLasse Collin# decompression mode. A BCJ filter isn't used either. 54824fa0402SLasse Collinquiet_cmd_xzkern = XZKERN $@ 5497ce7e984SMasahiro Yamada cmd_xzkern = cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh > $@ 5507ce7e984SMasahiro Yamada 5517ce7e984SMasahiro Yamadaquiet_cmd_xzkern_with_size = XZKERN $@ 5527ce7e984SMasahiro Yamada cmd_xzkern_with_size = { cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh; \ 553b79c6aa6SMasahiro Yamada $(size_append); } > $@ 55424fa0402SLasse Collin 55524fa0402SLasse Collinquiet_cmd_xzmisc = XZMISC $@ 5568dfb61dcSDenis Efremov cmd_xzmisc = cat $(real-prereqs) | $(XZ) --check=crc32 --lzma2=dict=1MiB > $@ 557ebf003f0SMatthias Kaehlcke 55848f7ddf7SNick Terrell# ZSTD 55948f7ddf7SNick Terrell# --------------------------------------------------------------------------- 56048f7ddf7SNick Terrell# Appends the uncompressed size of the data using size_append. The .zst 56148f7ddf7SNick Terrell# format has the size information available at the beginning of the file too, 56248f7ddf7SNick Terrell# but it's in a more complex format and it's good to avoid changing the part 56348f7ddf7SNick Terrell# of the boot code that reads the uncompressed size. 56448f7ddf7SNick Terrell# 56548f7ddf7SNick Terrell# Note that the bytes added by size_append will make the zstd tool think that 56648f7ddf7SNick Terrell# the file is corrupt. This is expected. 56748f7ddf7SNick Terrell# 56848f7ddf7SNick Terrell# zstd uses a maximum window size of 8 MB. zstd22 uses a maximum window size of 56948f7ddf7SNick Terrell# 128 MB. zstd22 is used for kernel compression because it is decompressed in a 57048f7ddf7SNick Terrell# single pass, so zstd doesn't need to allocate a window buffer. When streaming 57148f7ddf7SNick Terrell# decompression is used, like initramfs decompression, zstd22 should likely not 57248f7ddf7SNick Terrell# be used because it would require zstd to allocate a 128 MB buffer. 57348f7ddf7SNick Terrell 57448f7ddf7SNick Terrellquiet_cmd_zstd = ZSTD $@ 57564d8aaa4SMasahiro Yamada cmd_zstd = cat $(real-prereqs) | $(ZSTD) -19 > $@ 57648f7ddf7SNick Terrell 57748f7ddf7SNick Terrellquiet_cmd_zstd22 = ZSTD22 $@ 5787ce7e984SMasahiro Yamada cmd_zstd22 = cat $(real-prereqs) | $(ZSTD) -22 --ultra > $@ 5797ce7e984SMasahiro Yamada 5807ce7e984SMasahiro Yamadaquiet_cmd_zstd22_with_size = ZSTD22 $@ 5817ce7e984SMasahiro Yamada cmd_zstd22_with_size = { cat $(real-prereqs) | $(ZSTD) -22 --ultra; $(size_append); } > $@ 58248f7ddf7SNick Terrell 583ebf003f0SMatthias Kaehlcke# ASM offsets 584ebf003f0SMatthias Kaehlcke# --------------------------------------------------------------------------- 585ebf003f0SMatthias Kaehlcke 586ebf003f0SMatthias Kaehlcke# Default sed regexp - multiline due to syntax constraints 587cf0c3e68SJeroen Hofstee# 588cf0c3e68SJeroen Hofstee# Use [:space:] because LLVM's integrated assembler inserts <tab> around 589cf0c3e68SJeroen Hofstee# the .ascii directive whereas GCC keeps the <space> as-is. 590ebf003f0SMatthias Kaehlckedefine sed-offsets 591cf0c3e68SJeroen Hofstee 's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \ 592cf0c3e68SJeroen Hofstee /^->/{s:->#\(.*\):/* \1 */:; \ 593ebf003f0SMatthias Kaehlcke s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ 594cf0c3e68SJeroen Hofstee s:->::; p;}' 595ebf003f0SMatthias Kaehlckeendef 596ebf003f0SMatthias Kaehlcke 597ebf003f0SMatthias Kaehlcke# Use filechk to avoid rebuilds when a header changes, but the resulting file 598ebf003f0SMatthias Kaehlcke# does not 599ebf003f0SMatthias Kaehlckedefine filechk_offsets 600ebf003f0SMatthias Kaehlcke echo "#ifndef $2"; \ 601ebf003f0SMatthias Kaehlcke echo "#define $2"; \ 602ebf003f0SMatthias Kaehlcke echo "/*"; \ 603ebf003f0SMatthias Kaehlcke echo " * DO NOT MODIFY."; \ 604ebf003f0SMatthias Kaehlcke echo " *"; \ 605ebf003f0SMatthias Kaehlcke echo " * This file was generated by Kbuild"; \ 606ebf003f0SMatthias Kaehlcke echo " */"; \ 607ebf003f0SMatthias Kaehlcke echo ""; \ 60843fee2b2SMasahiro Yamada sed -ne $(sed-offsets) < $<; \ 609ebf003f0SMatthias Kaehlcke echo ""; \ 610ad774086SMasahiro Yamada echo "#endif" 611ebf003f0SMatthias Kaehlckeendef 612