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 238fdc3fbbSCao jin# Determine modorder. 248fdc3fbbSCao jin# Unfortunately, we don't have information about ordering between -y 258fdc3fbbSCao jin# and -m subdirs. Just put -y's first. 268fdc3fbbSCao jinmodorder := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko)) 271da177e4SLinus Torvalds 281da177e4SLinus Torvalds# Handle objects in subdirs 291da177e4SLinus Torvalds# --------------------------------------------------------------------------- 30f49821eeSNicholas Piggin# o if we encounter foo/ in $(obj-y), replace it by foo/built-in.a 311da177e4SLinus Torvalds# and add the directory to the list of dirs to descend into: $(subdir-y) 321da177e4SLinus Torvalds# o if we encounter foo/ in $(obj-m), remove it from $(obj-m) 331da177e4SLinus Torvalds# and add the directory to the list of dirs to descend into: $(subdir-m) 341da177e4SLinus Torvalds__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y))) 351da177e4SLinus Torvaldssubdir-y += $(__subdir-y) 361da177e4SLinus Torvalds__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m))) 371da177e4SLinus Torvaldssubdir-m += $(__subdir-m) 38f49821eeSNicholas Pigginobj-y := $(patsubst %/, %/built-in.a, $(obj-y)) 391da177e4SLinus Torvaldsobj-m := $(filter-out %/, $(obj-m)) 401da177e4SLinus Torvalds 411da177e4SLinus Torvalds# Subdirectories we need to descend into 421da177e4SLinus Torvaldssubdir-ym := $(sort $(subdir-y) $(subdir-m)) 431da177e4SLinus Torvalds 448fdc3fbbSCao jin# if $(foo-objs), $(foo-y), or $(foo-m) exists, foo.o is a composite object 451da177e4SLinus Torvaldsmulti-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m)))) 46cf4f2193SMichal Marekmulti-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))), $(m)))) 471da177e4SLinus Torvaldsmulti-used := $(multi-used-y) $(multi-used-m) 481da177e4SLinus Torvaldssingle-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m))) 491da177e4SLinus Torvalds 50f5fb9765SSam Ravnborg# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to 51f5fb9765SSam Ravnborg# tell kbuild to descend 52f49821eeSNicholas Pigginsubdir-obj-y := $(filter %/built-in.a, $(obj-y)) 531da177e4SLinus Torvalds 54f98fe47cSMasahiro Yamada# Replace multi-part objects by their individual parts, 55f98fe47cSMasahiro Yamada# including built-in.a from subdirectories 56f98fe47cSMasahiro Yamadareal-obj-y := $(foreach m, $(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m))) 57f5f33681SMasahiro Yamadareal-obj-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))) 581da177e4SLinus Torvalds 597e7962ddSMasahiro Yamada# DTB 607e7962ddSMasahiro Yamada# If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built 617e7962ddSMasahiro Yamadaextra-y += $(dtb-y) 627e7962ddSMasahiro Yamadaextra-$(CONFIG_OF_ALL_DTBS) += $(dtb-) 637e7962ddSMasahiro Yamada 644f0e3a57SRob Herringifneq ($(CHECK_DTBS),) 654f0e3a57SRob Herringextra-y += $(patsubst %.dtb,%.dt.yaml, $(dtb-y)) 664f0e3a57SRob Herringextra-$(CONFIG_OF_ALL_DTBS) += $(patsubst %.dtb,%.dt.yaml, $(dtb-)) 674f0e3a57SRob Herringendif 684f0e3a57SRob Herring 691da177e4SLinus Torvalds# Add subdir path 701da177e4SLinus Torvalds 711da177e4SLinus Torvaldsextra-y := $(addprefix $(obj)/,$(extra-y)) 721da177e4SLinus Torvaldsalways := $(addprefix $(obj)/,$(always)) 731da177e4SLinus Torvaldstargets := $(addprefix $(obj)/,$(targets)) 74551559e1STejun Heomodorder := $(addprefix $(obj)/,$(modorder)) 751da177e4SLinus Torvaldsobj-m := $(addprefix $(obj)/,$(obj-m)) 761da177e4SLinus Torvaldslib-y := $(addprefix $(obj)/,$(lib-y)) 771da177e4SLinus Torvaldssubdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y)) 78f5f33681SMasahiro Yamadareal-obj-y := $(addprefix $(obj)/,$(real-obj-y)) 79f5f33681SMasahiro Yamadareal-obj-m := $(addprefix $(obj)/,$(real-obj-m)) 801da177e4SLinus Torvaldssingle-used-m := $(addprefix $(obj)/,$(single-used-m)) 811da177e4SLinus Torvaldsmulti-used-m := $(addprefix $(obj)/,$(multi-used-m)) 821da177e4SLinus Torvaldssubdir-ym := $(addprefix $(obj)/,$(subdir-ym)) 831da177e4SLinus Torvalds 84c0152e9aSMasahiro Yamada# Finds the multi-part object the current object will be linked into. 85c0152e9aSMasahiro Yamada# If the object belongs to two or more multi-part objects, all of them are 86c0152e9aSMasahiro Yamada# concatenated with a colon separator. 87c0152e9aSMasahiro Yamadamodname-multi = $(subst $(space),:,$(sort $(foreach m,$(multi-used),\ 88c0152e9aSMasahiro Yamada $(if $(filter $*.o, $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$(m:.o=))))) 89c0152e9aSMasahiro Yamada 90c0152e9aSMasahiro Yamadamodname = $(if $(modname-multi),$(modname-multi),$(basetarget)) 91c0152e9aSMasahiro Yamada 921da177e4SLinus Torvalds# These flags are needed for modversions and compiling, so we define them here 938fdc3fbbSCao jin# $(modname_flags) defines KBUILD_MODNAME as the name of the module it will 941da177e4SLinus Torvalds# end up in (or would, if it gets compiled in) 95b42841b7SMichal Marekname-fix = $(squote)$(quote)$(subst $(comma),_,$(subst -,_,$1))$(quote)$(squote) 96b42841b7SMichal Marekbasename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget)) 97aeacb019SMasahiro Yamadamodname_flags = -DKBUILD_MODNAME=$(call name-fix,$(modname)) 981da177e4SLinus Torvalds 994e13d47cSMasahiro Yamadaorig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) \ 100d8672b40SSam Ravnborg $(ccflags-y) $(CFLAGS_$(basetarget).o) 101656ee82cSSteven Rostedt_c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags)) 1024e13d47cSMasahiro Yamadaorig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) \ 103d8672b40SSam Ravnborg $(asflags-y) $(AFLAGS_$(basetarget).o) 104a7e137ebSHeiko Carstens_a_flags = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags)) 105f77bf014SSam Ravnborg_cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F)) 1061da177e4SLinus Torvalds 1072521f2c2SPeter Oberparleiter# 1082521f2c2SPeter Oberparleiter# Enable gcov profiling flags for a file, directory or for all files depending 1092521f2c2SPeter Oberparleiter# on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL 1102521f2c2SPeter Oberparleiter# (in this order) 1112521f2c2SPeter Oberparleiter# 1122521f2c2SPeter Oberparleiterifeq ($(CONFIG_GCOV_KERNEL),y) 1132521f2c2SPeter Oberparleiter_c_flags += $(if $(patsubst n%,, \ 1142521f2c2SPeter Oberparleiter $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \ 1152521f2c2SPeter Oberparleiter $(CFLAGS_GCOV)) 1162521f2c2SPeter Oberparleiterendif 1172521f2c2SPeter Oberparleiter 1180b24beccSAndrey Ryabinin# 1190b24beccSAndrey Ryabinin# Enable address sanitizer flags for kernel except some files or directories 1200b24beccSAndrey Ryabinin# we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE) 1210b24beccSAndrey Ryabinin# 1220b24beccSAndrey Ryabininifeq ($(CONFIG_KASAN),y) 1230b24beccSAndrey Ryabinin_c_flags += $(if $(patsubst n%,, \ 1240b24beccSAndrey Ryabinin $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \ 1250e410e15SAndrey Konovalov $(CFLAGS_KASAN), $(CFLAGS_KASAN_NOSANITIZE)) 1260b24beccSAndrey Ryabininendif 1270b24beccSAndrey Ryabinin 128c6d30853SAndrey Ryabininifeq ($(CONFIG_UBSAN),y) 129c6d30853SAndrey Ryabinin_c_flags += $(if $(patsubst n%,, \ 130c6d30853SAndrey Ryabinin $(UBSAN_SANITIZE_$(basetarget).o)$(UBSAN_SANITIZE)$(CONFIG_UBSAN_SANITIZE_ALL)), \ 131c6d30853SAndrey Ryabinin $(CFLAGS_UBSAN)) 132c6d30853SAndrey Ryabininendif 133c6d30853SAndrey Ryabinin 1345c9a8750SDmitry Vyukovifeq ($(CONFIG_KCOV),y) 1355c9a8750SDmitry Vyukov_c_flags += $(if $(patsubst n%,, \ 136a4691deaSVegard Nossum $(KCOV_INSTRUMENT_$(basetarget).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \ 1375c9a8750SDmitry Vyukov $(CFLAGS_KCOV)) 1385c9a8750SDmitry Vyukovendif 1395c9a8750SDmitry Vyukov 1401da177e4SLinus Torvalds__c_flags = $(_c_flags) 1411da177e4SLinus Torvalds__a_flags = $(_a_flags) 1421da177e4SLinus Torvalds__cpp_flags = $(_cpp_flags) 14358156ba4SMasahiro Yamada 14458156ba4SMasahiro Yamada# If building the kernel in a separate objtree expand all occurrences 14558156ba4SMasahiro Yamada# of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/'). 14658156ba4SMasahiro Yamadaifeq ($(KBUILD_EXTMOD),) 147*a9a49c2aSMasahiro Yamadaifneq ($(srctree),.) 1481da177e4SLinus Torvalds 1491da177e4SLinus Torvalds# -I$(obj) locates generated .h files 1501da177e4SLinus Torvalds# $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files 1511da177e4SLinus Torvalds# and locates generated .h files 1521da177e4SLinus Torvalds# FIXME: Replace both with specific CFLAGS* statements in the makefiles 1534607ebf0SAllan, Bruce W__c_flags = $(if $(obj),$(call addtree,-I$(src)) -I$(obj)) \ 154db547ef1SArnd Bergmann $(call flags,_c_flags) 1551da177e4SLinus Torvalds__a_flags = $(call flags,_a_flags) 1561da177e4SLinus Torvalds__cpp_flags = $(call flags,_cpp_flags) 1571da177e4SLinus Torvaldsendif 15858156ba4SMasahiro Yamadaendif 1591da177e4SLinus Torvalds 160d8672b40SSam Ravnborgc_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ 161a95b37e2SMasahiro Yamada -include $(srctree)/include/linux/compiler_types.h \ 1621da177e4SLinus Torvalds $(__c_flags) $(modkern_cflags) \ 163b42841b7SMichal Marek $(basename_flags) $(modname_flags) 1641da177e4SLinus Torvalds 165d8672b40SSam Ravnborga_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ 1661da177e4SLinus Torvalds $(__a_flags) $(modkern_aflags) 1671da177e4SLinus Torvalds 168d8672b40SSam Ravnborgcpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ 169d8672b40SSam Ravnborg $(__cpp_flags) 1701da177e4SLinus Torvalds 171d503ac53SMasahiro Yamadald_flags = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) 1721da177e4SLinus Torvalds 17350f9ddafSMasahiro YamadaDTC_INCLUDE := $(srctree)/scripts/dtc/include-prefixes 17450f9ddafSMasahiro Yamada 175b0a4d8b3SIan Campbelldtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \ 17650f9ddafSMasahiro Yamada $(addprefix -I,$(DTC_INCLUDE)) \ 177e570d7c1SStephen Warren -undef -D__DTS__ 178e570d7c1SStephen Warren 179c8589d1eSMasahiro Yamada# Useful for describing the dependency of composite objects 180c8589d1eSMasahiro Yamada# Usage: 181c8589d1eSMasahiro Yamada# $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add) 182c8589d1eSMasahiro Yamadadefine multi_depend 183c8589d1eSMasahiro Yamada$(foreach m, $(notdir $1), \ 184c8589d1eSMasahiro Yamada $(eval $(obj)/$m: \ 185c8589d1eSMasahiro Yamada $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s))))))) 186c8589d1eSMasahiro Yamadaendef 187c8589d1eSMasahiro Yamada 1887373f4f8SArnaud Lacombe# LEX 1897373f4f8SArnaud Lacombe# --------------------------------------------------------------------------- 1907373f4f8SArnaud Lacombequiet_cmd_flex = LEX $@ 191eea199b4SMasahiro Yamada cmd_flex = $(LEX) -o$@ -L $< 1927373f4f8SArnaud Lacombe 193833e6224SMasahiro Yamada$(obj)/%.lex.c: $(src)/%.l FORCE 194033dba2eSMasahiro Yamada $(call if_changed,flex) 1957373f4f8SArnaud Lacombe 1967373f4f8SArnaud Lacombe# YACC 1977373f4f8SArnaud Lacombe# --------------------------------------------------------------------------- 1987373f4f8SArnaud Lacombequiet_cmd_bison = YACC $@ 199eea199b4SMasahiro Yamada cmd_bison = $(YACC) -o$@ -t -l $< 2007373f4f8SArnaud Lacombe 201833e6224SMasahiro Yamada$(obj)/%.tab.c: $(src)/%.y FORCE 202033dba2eSMasahiro Yamada $(call if_changed,bison) 2037373f4f8SArnaud Lacombe 2047373f4f8SArnaud Lacombequiet_cmd_bison_h = YACC $@ 205d59fbbd0SMasahiro Yamada cmd_bison_h = $(YACC) -o/dev/null --defines=$@ -t -l $< 2067373f4f8SArnaud Lacombe 207833e6224SMasahiro Yamada$(obj)/%.tab.h: $(src)/%.y FORCE 208033dba2eSMasahiro Yamada $(call if_changed,bison_h) 209033dba2eSMasahiro Yamada 2101da177e4SLinus Torvalds# Shipped files 2111da177e4SLinus Torvalds# =========================================================================== 2121da177e4SLinus Torvalds 2131da177e4SLinus Torvaldsquiet_cmd_shipped = SHIPPED $@ 2141da177e4SLinus Torvaldscmd_shipped = cat $< > $@ 2151da177e4SLinus Torvalds 216991d76c9SArnaud Lacombe$(obj)/%: $(src)/%_shipped 2171da177e4SLinus Torvalds $(call cmd,shipped) 2181da177e4SLinus Torvalds 2191da177e4SLinus Torvalds# Commands useful for building a boot image 2201da177e4SLinus Torvalds# =========================================================================== 2211da177e4SLinus Torvalds# 2221da177e4SLinus Torvalds# Use as following: 2231da177e4SLinus Torvalds# 2241da177e4SLinus Torvalds# target: source(s) FORCE 2251da177e4SLinus Torvalds# $(if_changed,ld/objcopy/gzip) 2261da177e4SLinus Torvalds# 227836caba7SSam Ravnborg# and add target to extra-y so that we know we have to 2281da177e4SLinus Torvalds# read in the saved command line 2291da177e4SLinus Torvalds 2301da177e4SLinus Torvalds# Linking 2311da177e4SLinus Torvalds# --------------------------------------------------------------------------- 2321da177e4SLinus Torvalds 2331da177e4SLinus Torvaldsquiet_cmd_ld = LD $@ 234afa974b7SMasahiro Yamada cmd_ld = $(LD) $(ld_flags) $(real-prereqs) -o $@ 2351da177e4SLinus Torvalds 236898f5a00SMasahiro Yamada# Archive 237898f5a00SMasahiro Yamada# --------------------------------------------------------------------------- 238898f5a00SMasahiro Yamada 239898f5a00SMasahiro Yamadaquiet_cmd_ar = AR $@ 240898f5a00SMasahiro Yamada cmd_ar = rm -f $@; $(AR) rcsTP$(KBUILD_ARFLAGS) $@ $(real-prereqs) 241898f5a00SMasahiro Yamada 2421da177e4SLinus Torvalds# Objcopy 2431da177e4SLinus Torvalds# --------------------------------------------------------------------------- 2441da177e4SLinus Torvalds 2451da177e4SLinus Torvaldsquiet_cmd_objcopy = OBJCOPY $@ 2461da177e4SLinus Torvaldscmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ 2471da177e4SLinus Torvalds 2481da177e4SLinus Torvalds# Gzip 2491da177e4SLinus Torvalds# --------------------------------------------------------------------------- 2501da177e4SLinus Torvalds 2511da177e4SLinus Torvaldsquiet_cmd_gzip = GZIP $@ 252afa974b7SMasahiro Yamada cmd_gzip = cat $(real-prereqs) | gzip -n -f -9 > $@ 2531da177e4SLinus Torvalds 254aab94339SDirk Brandewie# DTC 255aab94339SDirk Brandewie# --------------------------------------------------------------------------- 2566b22b3d1SRob HerringDTC ?= $(objtree)/scripts/dtc/dtc 257aab94339SDirk Brandewie 258bc553986SRob Herring# Disable noisy checks by default 259f759625aSMasahiro Yamadaifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),) 2608654cb8dSRob HerringDTC_FLAGS += -Wno-unit_address_vs_reg \ 2618654cb8dSRob Herring -Wno-unit_address_format \ 2624fd98e37SRob Herring -Wno-avoid_unnecessary_addr_size \ 2634fd98e37SRob Herring -Wno-alias_paths \ 26474656b68SRob Herring -Wno-graph_child_address \ 26570523a3cSRob Herring -Wno-simple_bus_reg \ 26674656b68SRob Herring -Wno-unique_unit_address \ 2678654cb8dSRob Herring -Wno-pci_device_reg 268bc553986SRob Herringendif 269bc553986SRob Herring 270f759625aSMasahiro Yamadaifneq ($(findstring 2,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),) 2718654cb8dSRob HerringDTC_FLAGS += -Wnode_name_chars_strict \ 2728654cb8dSRob Herring -Wproperty_name_chars_strict 273aab94339SDirk Brandewieendif 274aab94339SDirk Brandewie 275331f7416SFrank RowandDTC_FLAGS += $(DTC_FLAGS_$(basetarget)) 276331f7416SFrank Rowand 277aab94339SDirk Brandewie# Generate an assembly file to wrap the output of the device tree compiler 278aab94339SDirk Brandewiequiet_cmd_dt_S_dtb= DTB $@ 279aab94339SDirk Brandewiecmd_dt_S_dtb= \ 280b79c6aa6SMasahiro Yamada{ \ 281aab94339SDirk Brandewie echo '\#include <asm-generic/vmlinux.lds.h>'; \ 282aab94339SDirk Brandewie echo '.section .dtb.init.rodata,"a"'; \ 283aab94339SDirk Brandewie echo '.balign STRUCT_ALIGNMENT'; \ 28455fe6da9SJames Hogan echo '.global __dtb_$(subst -,_,$(*F))_begin'; \ 28555fe6da9SJames Hogan echo '__dtb_$(subst -,_,$(*F))_begin:'; \ 286aab94339SDirk Brandewie echo '.incbin "$<" '; \ 28755fe6da9SJames Hogan echo '__dtb_$(subst -,_,$(*F))_end:'; \ 28855fe6da9SJames Hogan echo '.global __dtb_$(subst -,_,$(*F))_end'; \ 289aab94339SDirk Brandewie echo '.balign STRUCT_ALIGNMENT'; \ 290b79c6aa6SMasahiro Yamada} > $@ 291aab94339SDirk Brandewie 292a7f92419SMasahiro Yamada$(obj)/%.dtb.S: $(obj)/%.dtb FORCE 293a7f92419SMasahiro Yamada $(call if_changed,dt_S_dtb) 294aab94339SDirk Brandewie 295aab94339SDirk Brandewiequiet_cmd_dtc = DTC $@ 29677479b38SNathan Rossicmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \ 29737c8a5faSRob Herring $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ 2984f0e3a57SRob Herring $(DTC) -O $(2) -o $@ -b 0 \ 29950f9ddafSMasahiro Yamada $(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \ 300b0a4d8b3SIan Campbell -d $(depfile).dtc.tmp $(dtc-tmp) ; \ 301b0a4d8b3SIan Campbell cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) 3021da177e4SLinus Torvalds 303b8fc5b21SRob Herring$(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE 3044f0e3a57SRob Herring $(call if_changed_dep,dtc,dtb) 3054f0e3a57SRob Herring 3064f0e3a57SRob HerringDT_CHECKER ?= dt-validate 3074f0e3a57SRob HerringDT_BINDING_DIR := Documentation/devicetree/bindings 3084f0e3a57SRob HerringDT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml 3094f0e3a57SRob Herring 3104f0e3a57SRob Herringquiet_cmd_dtb_check = CHECK $@ 3114f0e3a57SRob Herring cmd_dtb_check = $(DT_CHECKER) -p $(DT_TMP_SCHEMA) $@ ; 3124f0e3a57SRob Herring 3134f0e3a57SRob Herringdefine rule_dtc_dt_yaml 314f5688663SMasahiro Yamada $(call cmd_and_fixdep,dtc,yaml) 315f5688663SMasahiro Yamada $(call cmd,dtb_check) 3164f0e3a57SRob Herringendef 3174f0e3a57SRob Herring 3184f0e3a57SRob Herring$(obj)/%.dt.yaml: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE 3194f0e3a57SRob Herring $(call if_changed_rule,dtc_dt_yaml) 32090b335fbSStephen Warren 321b0a4d8b3SIan Campbelldtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp) 32222435f38SStephen Warren 323bc22c17eSAlain Knaff# Bzip2 324bc22c17eSAlain Knaff# --------------------------------------------------------------------------- 325bc22c17eSAlain Knaff 326d3dd3b5aSH. Peter Anvin# Bzip2 and LZMA do not include size in file... so we have to fake that; 327d3dd3b5aSH. Peter Anvin# append the size as a 32-bit littleendian number as gzip does. 3284a2ff67cSMichael Tokarevsize_append = printf $(shell \ 329d3dd3b5aSH. Peter Anvindec_size=0; \ 330afa974b7SMasahiro Yamadafor F in $(real-prereqs); do \ 331a670b0b4SMichael Forney fsize=$$($(CONFIG_SHELL) $(srctree)/scripts/file-size.sh $$F); \ 332d3dd3b5aSH. Peter Anvin dec_size=$$(expr $$dec_size + $$fsize); \ 333d3dd3b5aSH. Peter Anvindone; \ 3341373411aSJonathan Niederprintf "%08x\n" $$dec_size | \ 3351373411aSJonathan Nieder sed 's/\(..\)/\1 /g' | { \ 3361373411aSJonathan Nieder read ch0 ch1 ch2 ch3; \ 3371373411aSJonathan Nieder for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \ 3381373411aSJonathan Nieder printf '%s%03o' '\\' $$((0x$$ch)); \ 3391373411aSJonathan Nieder done; \ 3401373411aSJonathan Nieder } \ 341d3dd3b5aSH. Peter Anvin) 342bc22c17eSAlain Knaff 343bc22c17eSAlain Knaffquiet_cmd_bzip2 = BZIP2 $@ 344b79c6aa6SMasahiro Yamada cmd_bzip2 = { cat $(real-prereqs) | bzip2 -9 && $(size_append); } > $@ 345bc22c17eSAlain Knaff 346bc22c17eSAlain Knaff# Lzma 347bc22c17eSAlain Knaff# --------------------------------------------------------------------------- 348bc22c17eSAlain Knaff 349bc22c17eSAlain Knaffquiet_cmd_lzma = LZMA $@ 350b79c6aa6SMasahiro Yamada cmd_lzma = { cat $(real-prereqs) | lzma -9 && $(size_append); } > $@ 3517dd65febSAlbin Tonnerre 3527dd65febSAlbin Tonnerrequiet_cmd_lzo = LZO $@ 353b79c6aa6SMasahiro Yamada cmd_lzo = { cat $(real-prereqs) | lzop -9 && $(size_append); } > $@ 354d61931d8SBorislav Petkov 355e76e1fdfSKyungsik Leequiet_cmd_lz4 = LZ4 $@ 356b79c6aa6SMasahiro Yamada cmd_lz4 = { cat $(real-prereqs) | lz4c -l -c1 stdin stdout && \ 357b79c6aa6SMasahiro Yamada $(size_append); } > $@ 358e76e1fdfSKyungsik Lee 359e3393645SStephen Warren# U-Boot mkimage 360e3393645SStephen Warren# --------------------------------------------------------------------------- 361e3393645SStephen Warren 362e3393645SStephen WarrenMKIMAGE := $(srctree)/scripts/mkuboot.sh 363e3393645SStephen Warren 364e3393645SStephen Warren# SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces 365e3393645SStephen Warren# the number of overrides in arch makefiles 366e3393645SStephen WarrenUIMAGE_ARCH ?= $(SRCARCH) 367e3393645SStephen WarrenUIMAGE_COMPRESSION ?= $(if $(2),$(2),none) 368e3393645SStephen WarrenUIMAGE_OPTS-y ?= 369e3393645SStephen WarrenUIMAGE_TYPE ?= kernel 370e3393645SStephen WarrenUIMAGE_LOADADDR ?= arch_must_set_this 371e3393645SStephen WarrenUIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR) 372e3393645SStephen WarrenUIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)' 373e3393645SStephen Warren 374786ac51aSMasahiro Yamadaquiet_cmd_uimage = UIMAGE $@ 375e3393645SStephen Warren cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \ 376e3393645SStephen Warren -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \ 377e3393645SStephen Warren -T $(UIMAGE_TYPE) \ 378e3393645SStephen Warren -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \ 379786ac51aSMasahiro Yamada -n $(UIMAGE_NAME) -d $< $@ 380e3393645SStephen Warren 38124fa0402SLasse Collin# XZ 38224fa0402SLasse Collin# --------------------------------------------------------------------------- 38324fa0402SLasse Collin# Use xzkern to compress the kernel image and xzmisc to compress other things. 38424fa0402SLasse Collin# 38524fa0402SLasse Collin# xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage 38624fa0402SLasse Collin# of the kernel decompressor. A BCJ filter is used if it is available for 38724fa0402SLasse Collin# the target architecture. xzkern also appends uncompressed size of the data 38824fa0402SLasse Collin# using size_append. The .xz format has the size information available at 38924fa0402SLasse Collin# the end of the file too, but it's in more complex format and it's good to 39024fa0402SLasse Collin# avoid changing the part of the boot code that reads the uncompressed size. 39124fa0402SLasse Collin# Note that the bytes added by size_append will make the xz tool think that 39224fa0402SLasse Collin# the file is corrupt. This is expected. 39324fa0402SLasse Collin# 39424fa0402SLasse Collin# xzmisc doesn't use size_append, so it can be used to create normal .xz 39524fa0402SLasse Collin# files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very 39624fa0402SLasse Collin# big dictionary would increase the memory usage too much in the multi-call 39724fa0402SLasse Collin# decompression mode. A BCJ filter isn't used either. 39824fa0402SLasse Collinquiet_cmd_xzkern = XZKERN $@ 399b79c6aa6SMasahiro Yamada cmd_xzkern = { cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh && \ 400b79c6aa6SMasahiro Yamada $(size_append); } > $@ 40124fa0402SLasse Collin 40224fa0402SLasse Collinquiet_cmd_xzmisc = XZMISC $@ 403b79c6aa6SMasahiro Yamada cmd_xzmisc = cat $(real-prereqs) | xz --check=crc32 --lzma2=dict=1MiB > $@ 404ebf003f0SMatthias Kaehlcke 405ebf003f0SMatthias Kaehlcke# ASM offsets 406ebf003f0SMatthias Kaehlcke# --------------------------------------------------------------------------- 407ebf003f0SMatthias Kaehlcke 408ebf003f0SMatthias Kaehlcke# Default sed regexp - multiline due to syntax constraints 409cf0c3e68SJeroen Hofstee# 410cf0c3e68SJeroen Hofstee# Use [:space:] because LLVM's integrated assembler inserts <tab> around 411cf0c3e68SJeroen Hofstee# the .ascii directive whereas GCC keeps the <space> as-is. 412ebf003f0SMatthias Kaehlckedefine sed-offsets 413cf0c3e68SJeroen Hofstee 's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \ 414cf0c3e68SJeroen Hofstee /^->/{s:->#\(.*\):/* \1 */:; \ 415ebf003f0SMatthias Kaehlcke s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ 416cf0c3e68SJeroen Hofstee s:->::; p;}' 417ebf003f0SMatthias Kaehlckeendef 418ebf003f0SMatthias Kaehlcke 419ebf003f0SMatthias Kaehlcke# Use filechk to avoid rebuilds when a header changes, but the resulting file 420ebf003f0SMatthias Kaehlcke# does not 421ebf003f0SMatthias Kaehlckedefine filechk_offsets 422ebf003f0SMatthias Kaehlcke echo "#ifndef $2"; \ 423ebf003f0SMatthias Kaehlcke echo "#define $2"; \ 424ebf003f0SMatthias Kaehlcke echo "/*"; \ 425ebf003f0SMatthias Kaehlcke echo " * DO NOT MODIFY."; \ 426ebf003f0SMatthias Kaehlcke echo " *"; \ 427ebf003f0SMatthias Kaehlcke echo " * This file was generated by Kbuild"; \ 428ebf003f0SMatthias Kaehlcke echo " */"; \ 429ebf003f0SMatthias Kaehlcke echo ""; \ 43043fee2b2SMasahiro Yamada sed -ne $(sed-offsets) < $<; \ 431ebf003f0SMatthias Kaehlcke echo ""; \ 432ad774086SMasahiro Yamada echo "#endif" 433ebf003f0SMatthias Kaehlckeendef 434