10b73214fSGreg Kroah-Hartman# SPDX-License-Identifier: GPL-2.0 21da177e4SLinus Torvalds# 31da177e4SLinus Torvalds# s390/Makefile 41da177e4SLinus Torvalds# 51da177e4SLinus Torvalds# This file is included by the global makefile so that you can add your own 68212f898SMasahiro Yamada# architecture-specific flags and dependencies. 71da177e4SLinus Torvalds# 81da177e4SLinus Torvalds# Copyright (C) 1994 by Linus Torvalds 91da177e4SLinus Torvalds# 101da177e4SLinus Torvalds 111844c9bcSMartin SchwidefskyLD_BFD := elf64-s390 12d503ac53SMasahiro YamadaKBUILD_LDFLAGS := -m elf64_s390 137bdc229fSMartin SchwidefskyKBUILD_AFLAGS_MODULE += -fPIC 147bdc229fSMartin SchwidefskyKBUILD_CFLAGS_MODULE += -fPIC 15222d394dSSam RavnborgKBUILD_AFLAGS += -m64 1676bf9d6cSVasily GorbikKBUILD_CFLAGS += -m64 17805bc0bcSGerald Schaeferifeq ($(CONFIG_RELOCATABLE),y) 18805bc0bcSGerald SchaeferKBUILD_CFLAGS += -fPIE 19805bc0bcSGerald SchaeferLDFLAGS_vmlinux := -pie 20805bc0bcSGerald Schaeferendif 21ee6d777dSVasily Gorbikaflags_dwarf := -Wa,-gdwarf-2 2296fb54a1SArnd BergmannKBUILD_AFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -D__ASSEMBLY__ 23bb31074dSHeiko Carstensifndef CONFIG_AS_IS_LLVM 24ee6d777dSVasily GorbikKBUILD_AFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),$(aflags_dwarf)) 25bb31074dSHeiko Carstensendif 2642b01a55SVasily GorbikKBUILD_CFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -O2 -mpacked-stack 2776bf9d6cSVasily GorbikKBUILD_CFLAGS_DECOMPRESSOR += -DDISABLE_BRANCH_PROFILING -D__NO_FORTIFY 288977ab65SVasily GorbikKBUILD_CFLAGS_DECOMPRESSOR += -fno-delete-null-pointer-checks -msoft-float -mbackchain 2976bf9d6cSVasily GorbikKBUILD_CFLAGS_DECOMPRESSOR += -fno-asynchronous-unwind-tables 30685969e0SMasahiro YamadaKBUILD_CFLAGS_DECOMPRESSOR += -ffreestanding 3142e8d652SFabrice FontaineKBUILD_CFLAGS_DECOMPRESSOR += -fno-stack-protector 32f9364df3SHeiko CarstensKBUILD_CFLAGS_DECOMPRESSOR += $(call cc-disable-warning, address-of-packed-member) 33ee6d777dSVasily GorbikKBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),-g) 34ee6d777dSVasily GorbikKBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO_DWARF4), $(call cc-option, -gdwarf-4,)) 35*f0be87c4SLinus TorvaldsKBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_CC_NO_ARRAY_BOUNDS),-Wno-array-bounds) 368b202ee2SSven Schnelle 371da177e4SLinus TorvaldsUTS_MACHINE := s390x 389fed920eSVasily GorbikSTACK_SIZE := $(if $(CONFIG_KASAN),65536,16384) 3914516765SLuc Van OostenryckCHECKFLAGS += -D__s390__ -D__s390x__ 401da177e4SLinus Torvalds 411844c9bcSMartin Schwidefskyexport LD_BFD 421844c9bcSMartin Schwidefsky 430f1b1ff5SHeiko Carstensmflags-$(CONFIG_MARCH_Z10) := -march=z10 440f1b1ff5SHeiko Carstensmflags-$(CONFIG_MARCH_Z196) := -march=z196 450f1b1ff5SHeiko Carstensmflags-$(CONFIG_MARCH_ZEC12) := -march=zEC12 46f8b2dcbdSMartin Schwidefskymflags-$(CONFIG_MARCH_Z13) := -march=z13 476997c323SMartin Schwidefskymflags-$(CONFIG_MARCH_Z14) := -march=z14 48a0e22511SMartin Schwidefskymflags-$(CONFIG_MARCH_Z15) := -march=z15 49e69a7ff8SHeiko Carstensmflags-$(CONFIG_MARCH_Z16) := -march=z16 500f1b1ff5SHeiko Carstens 5122362a0eSMartin Schwidefskyexport CC_FLAGS_MARCH := $(mflags-y) 5222362a0eSMartin Schwidefsky 530f1b1ff5SHeiko Carstensaflags-y += $(mflags-y) 540f1b1ff5SHeiko Carstenscflags-y += $(mflags-y) 551da177e4SLinus Torvalds 561db9e051SHeiko Carstenscflags-$(CONFIG_MARCH_Z10_TUNE) += -mtune=z10 571db9e051SHeiko Carstenscflags-$(CONFIG_MARCH_Z196_TUNE) += -mtune=z196 581db9e051SHeiko Carstenscflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mtune=zEC12 59f8b2dcbdSMartin Schwidefskycflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13 606997c323SMartin Schwidefskycflags-$(CONFIG_MARCH_Z14_TUNE) += -mtune=z14 61a0e22511SMartin Schwidefskycflags-$(CONFIG_MARCH_Z15_TUNE) += -mtune=z15 62e69a7ff8SHeiko Carstenscflags-$(CONFIG_MARCH_Z16_TUNE) += -mtune=z16 631db9e051SHeiko Carstens 64c783b91eSMartin Schwidefskycflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include 65c783b91eSMartin Schwidefsky 66cbbd1fa7SHeiko Carstens# 67cbbd1fa7SHeiko Carstens# Prevent tail-call optimizations, to get clearer backtraces: 68cbbd1fa7SHeiko Carstens# 69cbbd1fa7SHeiko Carstenscflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls 70cbbd1fa7SHeiko Carstens 7176bf9d6cSVasily GorbikKBUILD_AFLAGS_DECOMPRESSOR += $(aflags-y) 7276bf9d6cSVasily GorbikKBUILD_CFLAGS_DECOMPRESSOR += $(cflags-y) 7376bf9d6cSVasily Gorbik 74ff00f64bSNick Desaulniersifneq ($(call cc-option,-mstack-size=8192 -mstack-guard=128),) 7500b55eafSSven Schnelle CC_FLAGS_CHECK_STACK := -mstack-size=$(STACK_SIZE) 76ff00f64bSNick Desaulniers ifeq ($(call cc-option,-mstack-size=8192),) 7700b55eafSSven Schnelle CC_FLAGS_CHECK_STACK += -mstack-guard=$(CONFIG_STACK_GUARD) 781da177e4SLinus Torvalds endif 7900b55eafSSven Schnelle export CC_FLAGS_CHECK_STACK 8000b55eafSSven Schnelle cflags-$(CONFIG_CHECK_STACK) += $(CC_FLAGS_CHECK_STACK) 81be796285SMartin Schwidefskyendif 821da177e4SLinus Torvalds 83f19fbd5eSMartin Schwidefskyifdef CONFIG_EXPOLINE 841d2ad084SVasily Gorbik ifdef CONFIG_EXPOLINE_EXTERN 851d2ad084SVasily Gorbik KBUILD_LDFLAGS_MODULE += arch/s390/lib/expoline.o 861d2ad084SVasily Gorbik CC_FLAGS_EXPOLINE := -mindirect-branch=thunk-extern 871d2ad084SVasily Gorbik CC_FLAGS_EXPOLINE += -mfunction-return=thunk-extern 881d2ad084SVasily Gorbik else 89f19fbd5eSMartin Schwidefsky CC_FLAGS_EXPOLINE := -mindirect-branch=thunk 90f19fbd5eSMartin Schwidefsky CC_FLAGS_EXPOLINE += -mfunction-return=thunk 911d2ad084SVasily Gorbik endif 92f19fbd5eSMartin Schwidefsky CC_FLAGS_EXPOLINE += -mindirect-branch-table 93f19fbd5eSMartin Schwidefsky export CC_FLAGS_EXPOLINE 946e179d64SMartin Schwidefsky cflags-y += $(CC_FLAGS_EXPOLINE) -DCC_USING_EXPOLINE 95157484abSVasily Gorbik aflags-y += -DCC_USING_EXPOLINE 96f19fbd5eSMartin Schwidefskyendif 97f19fbd5eSMartin Schwidefsky 98e6d60b36SHeiko Carstensifdef CONFIG_FUNCTION_TRACER 99ff00f64bSNick Desaulniers ifeq ($(call cc-option,-mfentry -mnop-mcount),) 100e6d60b36SHeiko Carstens # make use of hotpatch feature if the compiler supports it 101e6d60b36SHeiko Carstens cc_hotpatch := -mhotpatch=0,3 102ff00f64bSNick Desaulniers ifneq ($(call cc-option,$(cc_hotpatch)),) 103e6d60b36SHeiko Carstens CC_FLAGS_FTRACE := $(cc_hotpatch) 104e6d60b36SHeiko Carstens KBUILD_AFLAGS += -DCC_USING_HOTPATCH 105e6d60b36SHeiko Carstens KBUILD_CFLAGS += -DCC_USING_HOTPATCH 106e6d60b36SHeiko Carstens endif 107e6d60b36SHeiko Carstens endif 108d983c89cSVasily Gorbikendif 109e6d60b36SHeiko Carstens 1107bceec4eSHendrik Brueckner# Test CFI features of binutils 1117bceec4eSHendrik Bruecknercfi := $(call as-instr,.cfi_startproc\n.cfi_val_offset 15$(comma)-160\n.cfi_endproc,-DCONFIG_AS_CFI_VAL_OFFSET=1) 1127bceec4eSHendrik Brueckner 11342b01a55SVasily GorbikKBUILD_CFLAGS += -mpacked-stack -mbackchain -msoft-float $(cflags-y) 114c1afcaecSArnd BergmannKBUILD_CFLAGS += -pipe -Wno-sign-compare 1157bceec4eSHendrik BruecknerKBUILD_CFLAGS += -fno-asynchronous-unwind-tables $(cfi) 1167bceec4eSHendrik BruecknerKBUILD_AFLAGS += $(aflags-y) $(cfi) 11776bf9d6cSVasily Gorbikexport KBUILD_AFLAGS_DECOMPRESSOR 11876bf9d6cSVasily Gorbikexport KBUILD_CFLAGS_DECOMPRESSOR 1191da177e4SLinus Torvalds 1201da177e4SLinus TorvaldsOBJCOPYFLAGS := -O binary 1211da177e4SLinus Torvalds 1228282cd64SVasily Gorbikhead-y := arch/s390/kernel/head64.o 1231da177e4SLinus Torvalds 1244562c9ffSMichael Holzheulibs-y += arch/s390/lib/ 1251da177e4SLinus Torvaldsdrivers-y += drivers/s390/ 1261da177e4SLinus Torvalds 1274562c9ffSMichael Holzheuboot := arch/s390/boot 1285c75824dSHendrik Bruecknersyscalls := arch/s390/kernel/syscalls 129c30f6828SHeiko Carstenstools := arch/s390/tools 1301da177e4SLinus Torvalds 13100f2fb57SVasily Gorbikall: bzImage 1321da177e4SLinus Torvalds 133e0aa099cSVasily Gorbik#KBUILD_IMAGE is necessary for packaging targets like rpm-pkg, deb-pkg... 134e0aa099cSVasily GorbikKBUILD_IMAGE := $(boot)/bzImage 135e0aa099cSVasily Gorbik 13694e90f72SMasahiro Yamadainstall: 137f774f5bbSMasahiro Yamada $(call cmd,install) 1381da177e4SLinus Torvalds 13900f2fb57SVasily GorbikbzImage: vmlinux 1401da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 1411da177e4SLinus Torvalds 142411ed322SMichael Holzheuzfcpdump: 143411ed322SMichael Holzheu $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 144411ed322SMichael Holzheu 145f3cb31e4SHendrik Bruecknervdso_install: 146f3cb31e4SHendrik Brueckner $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ 147f3cb31e4SHendrik Brueckner 1485c75824dSHendrik Bruecknerarchheaders: 1495c75824dSHendrik Brueckner $(Q)$(MAKE) $(build)=$(syscalls) uapi 1505c75824dSHendrik Brueckner 151c30f6828SHeiko Carstensarchprepare: 1525c75824dSHendrik Brueckner $(Q)$(MAKE) $(build)=$(syscalls) kapi 1537fbf8315SHendrik Brueckner $(Q)$(MAKE) $(build)=$(tools) kapi 154779df224SSven Schnelleifeq ($(KBUILD_EXTMOD),) 155779df224SSven Schnelle# We need to generate vdso-offsets.h before compiling certain files in kernel/. 156779df224SSven Schnelle# In order to do that, we should use the archprepare target, but we can't since 157779df224SSven Schnelle# asm-offsets.h is included in some files used to generate vdso-offsets.h, and 158779df224SSven Schnelle# asm-offsets.h is built in prepare0, for which archprepare is a dependency. 159779df224SSven Schnelle# Therefore we need to generate the header after prepare0 has been made, hence 160779df224SSven Schnelle# this hack. 161779df224SSven Schnelleprepare: vdso_prepare 162779df224SSven Schnellevdso_prepare: prepare0 163779df224SSven Schnelle $(Q)$(MAKE) $(build)=arch/s390/kernel/vdso64 include/generated/vdso64-offsets.h 164779df224SSven Schnelle $(if $(CONFIG_COMPAT),$(Q)$(MAKE) \ 165779df224SSven Schnelle $(build)=arch/s390/kernel/vdso32 include/generated/vdso32-offsets.h) 166779df224SSven Schnelleendif 1671da177e4SLinus Torvalds 1681da177e4SLinus Torvalds# Don't use tabs in echo arguments 1691da177e4SLinus Torvaldsdefine archhelp 17000f2fb57SVasily Gorbik echo '* bzImage - Kernel image for IPL ($(boot)/bzImage)' 171b8eecf36SMichael Holzheu echo ' install - Install kernel using' 172b8eecf36SMichael Holzheu echo ' (your) ~/bin/$(INSTALLKERNEL) or' 173b8eecf36SMichael Holzheu echo ' (distribution) /sbin/$(INSTALLKERNEL) or' 174b8eecf36SMichael Holzheu echo ' install to $$(INSTALL_PATH)' 1751da177e4SLinus Torvaldsendef 176