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# --------------------------------------------------------------------------- 301da177e4SLinus Torvalds# o if we encounter foo/ in $(obj-y), replace it by foo/built-in.o 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) 381da177e4SLinus Torvaldsobj-y := $(patsubst %/, %/built-in.o, $(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 501da177e4SLinus Torvalds# Build list of the parts of our composite objects, our composite 511da177e4SLinus Torvalds# objects depend on those (obviously) 521da177e4SLinus Torvaldsmulti-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y))) 531da177e4SLinus Torvaldsmulti-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y))) 541da177e4SLinus Torvalds 55f5fb9765SSam Ravnborg# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to 56f5fb9765SSam Ravnborg# tell kbuild to descend 57f5fb9765SSam Ravnborgsubdir-obj-y := $(filter %/built-in.o, $(obj-y)) 581da177e4SLinus Torvalds 591da177e4SLinus Torvalds# Replace multi-part objects by their individual parts, look at local dir only 6010aaa3b7SMasahiro Yamadareal-objs-y := $(foreach m, $(filter-out $(subdir-obj-y), $(obj-y)), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m))) 61cf4f2193SMichal Marekreal-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m))) 621da177e4SLinus Torvalds 637e7962ddSMasahiro Yamada# DTB 647e7962ddSMasahiro Yamada# If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built 657e7962ddSMasahiro Yamadaextra-y += $(dtb-y) 667e7962ddSMasahiro Yamadaextra-$(CONFIG_OF_ALL_DTBS) += $(dtb-) 677e7962ddSMasahiro Yamada 681da177e4SLinus Torvalds# Add subdir path 691da177e4SLinus Torvalds 701da177e4SLinus Torvaldsextra-y := $(addprefix $(obj)/,$(extra-y)) 711da177e4SLinus Torvaldsalways := $(addprefix $(obj)/,$(always)) 721da177e4SLinus Torvaldstargets := $(addprefix $(obj)/,$(targets)) 73551559e1STejun Heomodorder := $(addprefix $(obj)/,$(modorder)) 741da177e4SLinus Torvaldsobj-y := $(addprefix $(obj)/,$(obj-y)) 751da177e4SLinus Torvaldsobj-m := $(addprefix $(obj)/,$(obj-m)) 761da177e4SLinus Torvaldslib-y := $(addprefix $(obj)/,$(lib-y)) 771da177e4SLinus Torvaldssubdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y)) 781da177e4SLinus Torvaldsreal-objs-y := $(addprefix $(obj)/,$(real-objs-y)) 791da177e4SLinus Torvaldsreal-objs-m := $(addprefix $(obj)/,$(real-objs-m)) 801da177e4SLinus Torvaldssingle-used-m := $(addprefix $(obj)/,$(single-used-m)) 811da177e4SLinus Torvaldsmulti-used-y := $(addprefix $(obj)/,$(multi-used-y)) 821da177e4SLinus Torvaldsmulti-used-m := $(addprefix $(obj)/,$(multi-used-m)) 831da177e4SLinus Torvaldsmulti-objs-y := $(addprefix $(obj)/,$(multi-objs-y)) 841da177e4SLinus Torvaldsmulti-objs-m := $(addprefix $(obj)/,$(multi-objs-m)) 851da177e4SLinus Torvaldssubdir-ym := $(addprefix $(obj)/,$(subdir-ym)) 861da177e4SLinus Torvalds 871da177e4SLinus Torvalds# These flags are needed for modversions and compiling, so we define them here 888fdc3fbbSCao jin# $(modname_flags) defines KBUILD_MODNAME as the name of the module it will 891da177e4SLinus Torvalds# end up in (or would, if it gets compiled in) 905bb0571bSMichal Marek# Note: Files that end up in two or more modules are compiled without the 915bb0571bSMichal Marek# KBUILD_MODNAME definition. The reason is that any made-up name would 925bb0571bSMichal Marek# differ in different configs. 93b42841b7SMichal Marekname-fix = $(squote)$(quote)$(subst $(comma),_,$(subst -,_,$1))$(quote)$(squote) 94b42841b7SMichal Marekbasename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget)) 95f83b5e32SUstyugov Romanmodname_flags = $(if $(filter 1,$(words $(modname))),\ 96b42841b7SMichal Marek -DKBUILD_MODNAME=$(call name-fix,$(modname))) 971da177e4SLinus Torvalds 984e13d47cSMasahiro Yamadaorig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) \ 99d8672b40SSam Ravnborg $(ccflags-y) $(CFLAGS_$(basetarget).o) 100656ee82cSSteven Rostedt_c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags)) 1014e13d47cSMasahiro Yamadaorig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) \ 102d8672b40SSam Ravnborg $(asflags-y) $(AFLAGS_$(basetarget).o) 103a7e137ebSHeiko Carstens_a_flags = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags)) 104f77bf014SSam Ravnborg_cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F)) 1051da177e4SLinus Torvalds 1062521f2c2SPeter Oberparleiter# 1072521f2c2SPeter Oberparleiter# Enable gcov profiling flags for a file, directory or for all files depending 1082521f2c2SPeter Oberparleiter# on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL 1092521f2c2SPeter Oberparleiter# (in this order) 1102521f2c2SPeter Oberparleiter# 1112521f2c2SPeter Oberparleiterifeq ($(CONFIG_GCOV_KERNEL),y) 1122521f2c2SPeter Oberparleiter_c_flags += $(if $(patsubst n%,, \ 1132521f2c2SPeter Oberparleiter $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \ 1142521f2c2SPeter Oberparleiter $(CFLAGS_GCOV)) 1152521f2c2SPeter Oberparleiterendif 1162521f2c2SPeter Oberparleiter 1170b24beccSAndrey Ryabinin# 1180b24beccSAndrey Ryabinin# Enable address sanitizer flags for kernel except some files or directories 1190b24beccSAndrey Ryabinin# we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE) 1200b24beccSAndrey Ryabinin# 1210b24beccSAndrey Ryabininifeq ($(CONFIG_KASAN),y) 1220b24beccSAndrey Ryabinin_c_flags += $(if $(patsubst n%,, \ 1230b24beccSAndrey Ryabinin $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \ 1240b24beccSAndrey Ryabinin $(CFLAGS_KASAN)) 1250b24beccSAndrey Ryabininendif 1260b24beccSAndrey Ryabinin 127c6d30853SAndrey Ryabininifeq ($(CONFIG_UBSAN),y) 128c6d30853SAndrey Ryabinin_c_flags += $(if $(patsubst n%,, \ 129c6d30853SAndrey Ryabinin $(UBSAN_SANITIZE_$(basetarget).o)$(UBSAN_SANITIZE)$(CONFIG_UBSAN_SANITIZE_ALL)), \ 130c6d30853SAndrey Ryabinin $(CFLAGS_UBSAN)) 131c6d30853SAndrey Ryabininendif 132c6d30853SAndrey Ryabinin 1335c9a8750SDmitry Vyukovifeq ($(CONFIG_KCOV),y) 1345c9a8750SDmitry Vyukov_c_flags += $(if $(patsubst n%,, \ 135a4691deaSVegard Nossum $(KCOV_INSTRUMENT_$(basetarget).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \ 1365c9a8750SDmitry Vyukov $(CFLAGS_KCOV)) 1375c9a8750SDmitry Vyukovendif 1385c9a8750SDmitry Vyukov 1391da177e4SLinus Torvalds# If building the kernel in a separate objtree expand all occurrences 1401da177e4SLinus Torvalds# of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/'). 1411da177e4SLinus Torvalds 1421da177e4SLinus Torvaldsifeq ($(KBUILD_SRC),) 1431da177e4SLinus Torvalds__c_flags = $(_c_flags) 1441da177e4SLinus Torvalds__a_flags = $(_a_flags) 1451da177e4SLinus Torvalds__cpp_flags = $(_cpp_flags) 1461da177e4SLinus Torvaldselse 1471da177e4SLinus Torvalds 1481da177e4SLinus Torvalds# -I$(obj) locates generated .h files 1491da177e4SLinus Torvalds# $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files 1501da177e4SLinus Torvalds# and locates generated .h files 1511da177e4SLinus Torvalds# FIXME: Replace both with specific CFLAGS* statements in the makefiles 1524607ebf0SAllan, Bruce W__c_flags = $(if $(obj),$(call addtree,-I$(src)) -I$(obj)) \ 153db547ef1SArnd Bergmann $(call flags,_c_flags) 1541da177e4SLinus Torvalds__a_flags = $(call flags,_a_flags) 1551da177e4SLinus Torvalds__cpp_flags = $(call flags,_cpp_flags) 1561da177e4SLinus Torvaldsendif 1571da177e4SLinus Torvalds 158d8672b40SSam Ravnborgc_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ 1591da177e4SLinus Torvalds $(__c_flags) $(modkern_cflags) \ 160b42841b7SMichal Marek $(basename_flags) $(modname_flags) 1611da177e4SLinus Torvalds 162d8672b40SSam Ravnborga_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ 1631da177e4SLinus Torvalds $(__a_flags) $(modkern_aflags) 1641da177e4SLinus Torvalds 165d8672b40SSam Ravnborgcpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ 166d8672b40SSam Ravnborg $(__cpp_flags) 1671da177e4SLinus Torvalds 168f77bf014SSam Ravnborgld_flags = $(LDFLAGS) $(ldflags-y) 1691da177e4SLinus Torvalds 17050f9ddafSMasahiro YamadaDTC_INCLUDE := $(srctree)/scripts/dtc/include-prefixes 17150f9ddafSMasahiro Yamada 172b0a4d8b3SIan Campbelldtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \ 17350f9ddafSMasahiro Yamada $(addprefix -I,$(DTC_INCLUDE)) \ 174e570d7c1SStephen Warren -undef -D__DTS__ 175e570d7c1SStephen Warren 1761da177e4SLinus Torvalds# Finds the multi-part object the current object will be linked into 1771da177e4SLinus Torvaldsmodname-multi = $(sort $(foreach m,$(multi-used),\ 1781da177e4SLinus Torvalds $(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=)))) 1791da177e4SLinus Torvalds 180c8589d1eSMasahiro Yamada# Useful for describing the dependency of composite objects 181c8589d1eSMasahiro Yamada# Usage: 182c8589d1eSMasahiro Yamada# $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add) 183c8589d1eSMasahiro Yamadadefine multi_depend 184c8589d1eSMasahiro Yamada$(foreach m, $(notdir $1), \ 185c8589d1eSMasahiro Yamada $(eval $(obj)/$m: \ 186c8589d1eSMasahiro Yamada $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s))))))) 187c8589d1eSMasahiro Yamadaendef 188c8589d1eSMasahiro Yamada 1897373f4f8SArnaud Lacombeifdef REGENERATE_PARSERS 1907373f4f8SArnaud Lacombe 1917373f4f8SArnaud Lacombe# LEX 1927373f4f8SArnaud Lacombe# --------------------------------------------------------------------------- 1937373f4f8SArnaud LacombeLEX_PREFIX = $(if $(LEX_PREFIX_${baseprereq}),$(LEX_PREFIX_${baseprereq}),yy) 1947373f4f8SArnaud Lacombe 1957373f4f8SArnaud Lacombequiet_cmd_flex = LEX $@ 1967373f4f8SArnaud Lacombe cmd_flex = flex -o$@ -L -P $(LEX_PREFIX) $< 1977373f4f8SArnaud Lacombe 19858238c81SPeter Foley.PRECIOUS: $(src)/%.lex.c_shipped 1997373f4f8SArnaud Lacombe$(src)/%.lex.c_shipped: $(src)/%.l 2007373f4f8SArnaud Lacombe $(call cmd,flex) 2017373f4f8SArnaud Lacombe 2027373f4f8SArnaud Lacombe# YACC 2037373f4f8SArnaud Lacombe# --------------------------------------------------------------------------- 2047373f4f8SArnaud LacombeYACC_PREFIX = $(if $(YACC_PREFIX_${baseprereq}),$(YACC_PREFIX_${baseprereq}),yy) 2057373f4f8SArnaud Lacombe 2067373f4f8SArnaud Lacombequiet_cmd_bison = YACC $@ 2077373f4f8SArnaud Lacombe cmd_bison = bison -o$@ -t -l -p $(YACC_PREFIX) $< 2087373f4f8SArnaud Lacombe 20958238c81SPeter Foley.PRECIOUS: $(src)/%.tab.c_shipped 2107373f4f8SArnaud Lacombe$(src)/%.tab.c_shipped: $(src)/%.y 2117373f4f8SArnaud Lacombe $(call cmd,bison) 2127373f4f8SArnaud Lacombe 2137373f4f8SArnaud Lacombequiet_cmd_bison_h = YACC $@ 2147373f4f8SArnaud Lacombe cmd_bison_h = bison -o/dev/null --defines=$@ -t -l -p $(YACC_PREFIX) $< 2157373f4f8SArnaud Lacombe 21658238c81SPeter Foley.PRECIOUS: $(src)/%.tab.h_shipped 2177373f4f8SArnaud Lacombe$(src)/%.tab.h_shipped: $(src)/%.y 2187373f4f8SArnaud Lacombe $(call cmd,bison_h) 2197373f4f8SArnaud Lacombe 2207373f4f8SArnaud Lacombeendif 2217373f4f8SArnaud Lacombe 2221da177e4SLinus Torvalds# Shipped files 2231da177e4SLinus Torvalds# =========================================================================== 2241da177e4SLinus Torvalds 2251da177e4SLinus Torvaldsquiet_cmd_shipped = SHIPPED $@ 2261da177e4SLinus Torvaldscmd_shipped = cat $< > $@ 2271da177e4SLinus Torvalds 228991d76c9SArnaud Lacombe$(obj)/%: $(src)/%_shipped 2291da177e4SLinus Torvalds $(call cmd,shipped) 2301da177e4SLinus Torvalds 2311da177e4SLinus Torvalds# Commands useful for building a boot image 2321da177e4SLinus Torvalds# =========================================================================== 2331da177e4SLinus Torvalds# 2341da177e4SLinus Torvalds# Use as following: 2351da177e4SLinus Torvalds# 2361da177e4SLinus Torvalds# target: source(s) FORCE 2371da177e4SLinus Torvalds# $(if_changed,ld/objcopy/gzip) 2381da177e4SLinus Torvalds# 239836caba7SSam Ravnborg# and add target to extra-y so that we know we have to 2401da177e4SLinus Torvalds# read in the saved command line 2411da177e4SLinus Torvalds 2421da177e4SLinus Torvalds# Linking 2431da177e4SLinus Torvalds# --------------------------------------------------------------------------- 2441da177e4SLinus Torvalds 2451da177e4SLinus Torvaldsquiet_cmd_ld = LD $@ 246f77bf014SSam Ravnborgcmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \ 2471da177e4SLinus Torvalds $(filter-out FORCE,$^) -o $@ 2481da177e4SLinus Torvalds 2491da177e4SLinus Torvalds# Objcopy 2501da177e4SLinus Torvalds# --------------------------------------------------------------------------- 2511da177e4SLinus Torvalds 2521da177e4SLinus Torvaldsquiet_cmd_objcopy = OBJCOPY $@ 2531da177e4SLinus Torvaldscmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ 2541da177e4SLinus Torvalds 2551da177e4SLinus Torvalds# Gzip 2561da177e4SLinus Torvalds# --------------------------------------------------------------------------- 2571da177e4SLinus Torvalds 2581da177e4SLinus Torvaldsquiet_cmd_gzip = GZIP $@ 2596ae9ecb8SMichal Marekcmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \ 260d3dd3b5aSH. Peter Anvin (rm -f $@ ; false) 2611da177e4SLinus Torvalds 262aab94339SDirk Brandewie# DTC 263aab94339SDirk Brandewie# --------------------------------------------------------------------------- 2646b22b3d1SRob HerringDTC ?= $(objtree)/scripts/dtc/dtc 265aab94339SDirk Brandewie 266bc553986SRob Herring# Disable noisy checks by default 267*f759625aSMasahiro Yamadaifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),) 2688654cb8dSRob HerringDTC_FLAGS += -Wno-unit_address_vs_reg \ 2698654cb8dSRob Herring -Wno-simple_bus_reg \ 2708654cb8dSRob Herring -Wno-unit_address_format \ 2718654cb8dSRob Herring -Wno-pci_bridge \ 2728654cb8dSRob Herring -Wno-pci_device_bus_num \ 2738654cb8dSRob Herring -Wno-pci_device_reg 274bc553986SRob Herringendif 275bc553986SRob Herring 276*f759625aSMasahiro Yamadaifneq ($(findstring 2,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),) 2778654cb8dSRob HerringDTC_FLAGS += -Wnode_name_chars_strict \ 2788654cb8dSRob Herring -Wproperty_name_chars_strict 279aab94339SDirk Brandewieendif 280aab94339SDirk Brandewie 281331f7416SFrank RowandDTC_FLAGS += $(DTC_FLAGS_$(basetarget)) 282331f7416SFrank Rowand 283aab94339SDirk Brandewie# Generate an assembly file to wrap the output of the device tree compiler 284aab94339SDirk Brandewiequiet_cmd_dt_S_dtb= DTB $@ 285aab94339SDirk Brandewiecmd_dt_S_dtb= \ 286aab94339SDirk Brandewie( \ 287aab94339SDirk Brandewie echo '\#include <asm-generic/vmlinux.lds.h>'; \ 288aab94339SDirk Brandewie echo '.section .dtb.init.rodata,"a"'; \ 289aab94339SDirk Brandewie echo '.balign STRUCT_ALIGNMENT'; \ 290aab94339SDirk Brandewie echo '.global __dtb_$(*F)_begin'; \ 291aab94339SDirk Brandewie echo '__dtb_$(*F)_begin:'; \ 292aab94339SDirk Brandewie echo '.incbin "$<" '; \ 293aab94339SDirk Brandewie echo '__dtb_$(*F)_end:'; \ 294aab94339SDirk Brandewie echo '.global __dtb_$(*F)_end'; \ 295aab94339SDirk Brandewie echo '.balign STRUCT_ALIGNMENT'; \ 296aab94339SDirk Brandewie) > $@ 297aab94339SDirk Brandewie 298aab94339SDirk Brandewie$(obj)/%.dtb.S: $(obj)/%.dtb 299aab94339SDirk Brandewie $(call cmd,dt_S_dtb) 300aab94339SDirk Brandewie 301aab94339SDirk Brandewiequiet_cmd_dtc = DTC $@ 30277479b38SNathan Rossicmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \ 30377479b38SNathan Rossi $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ 3046b22b3d1SRob Herring $(DTC) -O dtb -o $@ -b 0 \ 30550f9ddafSMasahiro Yamada $(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \ 306b0a4d8b3SIan Campbell -d $(depfile).dtc.tmp $(dtc-tmp) ; \ 307b0a4d8b3SIan Campbell cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) 3081da177e4SLinus Torvalds 30990b335fbSStephen Warren$(obj)/%.dtb: $(src)/%.dts FORCE 31090b335fbSStephen Warren $(call if_changed_dep,dtc) 31190b335fbSStephen Warren 312b0a4d8b3SIan Campbelldtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp) 31322435f38SStephen Warren 314bc22c17eSAlain Knaff# Bzip2 315bc22c17eSAlain Knaff# --------------------------------------------------------------------------- 316bc22c17eSAlain Knaff 317d3dd3b5aSH. Peter Anvin# Bzip2 and LZMA do not include size in file... so we have to fake that; 318d3dd3b5aSH. Peter Anvin# append the size as a 32-bit littleendian number as gzip does. 3194a2ff67cSMichael Tokarevsize_append = printf $(shell \ 320d3dd3b5aSH. Peter Anvindec_size=0; \ 321d3dd3b5aSH. Peter Anvinfor F in $1; do \ 322d3dd3b5aSH. Peter Anvin fsize=$$(stat -c "%s" $$F); \ 323d3dd3b5aSH. Peter Anvin dec_size=$$(expr $$dec_size + $$fsize); \ 324d3dd3b5aSH. Peter Anvindone; \ 3251373411aSJonathan Niederprintf "%08x\n" $$dec_size | \ 3261373411aSJonathan Nieder sed 's/\(..\)/\1 /g' | { \ 3271373411aSJonathan Nieder read ch0 ch1 ch2 ch3; \ 3281373411aSJonathan Nieder for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \ 3291373411aSJonathan Nieder printf '%s%03o' '\\' $$((0x$$ch)); \ 3301373411aSJonathan Nieder done; \ 3311373411aSJonathan Nieder } \ 332d3dd3b5aSH. Peter Anvin) 333bc22c17eSAlain Knaff 334bc22c17eSAlain Knaffquiet_cmd_bzip2 = BZIP2 $@ 335d3dd3b5aSH. Peter Anvincmd_bzip2 = (cat $(filter-out FORCE,$^) | \ 336d3dd3b5aSH. Peter Anvin bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ 337d3dd3b5aSH. Peter Anvin (rm -f $@ ; false) 338bc22c17eSAlain Knaff 339bc22c17eSAlain Knaff# Lzma 340bc22c17eSAlain Knaff# --------------------------------------------------------------------------- 341bc22c17eSAlain Knaff 342bc22c17eSAlain Knaffquiet_cmd_lzma = LZMA $@ 343d3dd3b5aSH. Peter Anvincmd_lzma = (cat $(filter-out FORCE,$^) | \ 344d3dd3b5aSH. Peter Anvin lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ 345d3dd3b5aSH. Peter Anvin (rm -f $@ ; false) 3467dd65febSAlbin Tonnerre 3477dd65febSAlbin Tonnerrequiet_cmd_lzo = LZO $@ 3487dd65febSAlbin Tonnerrecmd_lzo = (cat $(filter-out FORCE,$^) | \ 3497dd65febSAlbin Tonnerre lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ 3507dd65febSAlbin Tonnerre (rm -f $@ ; false) 351d61931d8SBorislav Petkov 352e76e1fdfSKyungsik Leequiet_cmd_lz4 = LZ4 $@ 353e76e1fdfSKyungsik Leecmd_lz4 = (cat $(filter-out FORCE,$^) | \ 354e76e1fdfSKyungsik Lee lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ 355e76e1fdfSKyungsik Lee (rm -f $@ ; false) 356e76e1fdfSKyungsik Lee 357e3393645SStephen Warren# U-Boot mkimage 358e3393645SStephen Warren# --------------------------------------------------------------------------- 359e3393645SStephen Warren 360e3393645SStephen WarrenMKIMAGE := $(srctree)/scripts/mkuboot.sh 361e3393645SStephen Warren 362e3393645SStephen Warren# SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces 363e3393645SStephen Warren# the number of overrides in arch makefiles 364e3393645SStephen WarrenUIMAGE_ARCH ?= $(SRCARCH) 365e3393645SStephen WarrenUIMAGE_COMPRESSION ?= $(if $(2),$(2),none) 366e3393645SStephen WarrenUIMAGE_OPTS-y ?= 367e3393645SStephen WarrenUIMAGE_TYPE ?= kernel 368e3393645SStephen WarrenUIMAGE_LOADADDR ?= arch_must_set_this 369e3393645SStephen WarrenUIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR) 370e3393645SStephen WarrenUIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)' 371e3393645SStephen WarrenUIMAGE_IN ?= $< 372e3393645SStephen WarrenUIMAGE_OUT ?= $@ 373e3393645SStephen Warren 374e3393645SStephen Warrenquiet_cmd_uimage = UIMAGE $(UIMAGE_OUT) 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) \ 379e3393645SStephen Warren -n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT) 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 $@ 39924fa0402SLasse Collincmd_xzkern = (cat $(filter-out FORCE,$^) | \ 40024fa0402SLasse Collin sh $(srctree)/scripts/xz_wrap.sh && \ 40124fa0402SLasse Collin $(call size_append, $(filter-out FORCE,$^))) > $@ || \ 40224fa0402SLasse Collin (rm -f $@ ; false) 40324fa0402SLasse Collin 40424fa0402SLasse Collinquiet_cmd_xzmisc = XZMISC $@ 40524fa0402SLasse Collincmd_xzmisc = (cat $(filter-out FORCE,$^) | \ 40624fa0402SLasse Collin xz --check=crc32 --lzma2=dict=1MiB) > $@ || \ 40724fa0402SLasse Collin (rm -f $@ ; false) 408ebf003f0SMatthias Kaehlcke 409ebf003f0SMatthias Kaehlcke# ASM offsets 410ebf003f0SMatthias Kaehlcke# --------------------------------------------------------------------------- 411ebf003f0SMatthias Kaehlcke 412ebf003f0SMatthias Kaehlcke# Default sed regexp - multiline due to syntax constraints 413cf0c3e68SJeroen Hofstee# 414cf0c3e68SJeroen Hofstee# Use [:space:] because LLVM's integrated assembler inserts <tab> around 415cf0c3e68SJeroen Hofstee# the .ascii directive whereas GCC keeps the <space> as-is. 416ebf003f0SMatthias Kaehlckedefine sed-offsets 417cf0c3e68SJeroen Hofstee 's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \ 418cf0c3e68SJeroen Hofstee /^->/{s:->#\(.*\):/* \1 */:; \ 419ebf003f0SMatthias Kaehlcke s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ 420cf0c3e68SJeroen Hofstee s:->::; p;}' 421ebf003f0SMatthias Kaehlckeendef 422ebf003f0SMatthias Kaehlcke 423ebf003f0SMatthias Kaehlcke# Use filechk to avoid rebuilds when a header changes, but the resulting file 424ebf003f0SMatthias Kaehlcke# does not 425ebf003f0SMatthias Kaehlckedefine filechk_offsets 426ebf003f0SMatthias Kaehlcke (set -e; \ 427ebf003f0SMatthias Kaehlcke echo "#ifndef $2"; \ 428ebf003f0SMatthias Kaehlcke echo "#define $2"; \ 429ebf003f0SMatthias Kaehlcke echo "/*"; \ 430ebf003f0SMatthias Kaehlcke echo " * DO NOT MODIFY."; \ 431ebf003f0SMatthias Kaehlcke echo " *"; \ 432ebf003f0SMatthias Kaehlcke echo " * This file was generated by Kbuild"; \ 433ebf003f0SMatthias Kaehlcke echo " */"; \ 434ebf003f0SMatthias Kaehlcke echo ""; \ 435ebf003f0SMatthias Kaehlcke sed -ne $(sed-offsets); \ 436ebf003f0SMatthias Kaehlcke echo ""; \ 437ebf003f0SMatthias Kaehlcke echo "#endif" ) 438ebf003f0SMatthias Kaehlckeendef 439