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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 | # SPDX-License-Identifier: GPL-2.0 # # s390/Makefile # # This file is included by the global makefile so that you can add your own # architecture-specific flags and dependencies. Remember to do have actions # for "archclean" and "archdep" for cleaning up and making dependencies for # this architecture # # Copyright (C) 1994 by Linus Torvalds # LD_BFD := elf64-s390 KBUILD_LDFLAGS := -m elf64_s390 KBUILD_AFLAGS_MODULE += -fPIC KBUILD_CFLAGS_MODULE += -fPIC KBUILD_AFLAGS += -m64 KBUILD_CFLAGS += -m64 ifeq ($(CONFIG_RELOCATABLE),y) KBUILD_CFLAGS += -fPIE LDFLAGS_vmlinux := -pie endif aflags_dwarf := -Wa,-gdwarf-2 KBUILD_AFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -D__ASSEMBLY__ KBUILD_AFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),$(aflags_dwarf)) KBUILD_CFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -O2 KBUILD_CFLAGS_DECOMPRESSOR += -DDISABLE_BRANCH_PROFILING -D__NO_FORTIFY KBUILD_CFLAGS_DECOMPRESSOR += -fno-delete-null-pointer-checks -msoft-float KBUILD_CFLAGS_DECOMPRESSOR += -fno-asynchronous-unwind-tables KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-option,-ffreestanding) KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-disable-warning, address-of-packed-member) KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),-g) KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO_DWARF4), $(call cc-option, -gdwarf-4,)) UTS_MACHINE := s390x STACK_SIZE := $(if $(CONFIG_KASAN),65536,16384) CHECKFLAGS += -D__s390__ -D__s390x__ export LD_BFD mflags-$(CONFIG_MARCH_Z900) := -march=z900 mflags-$(CONFIG_MARCH_Z990) := -march=z990 mflags-$(CONFIG_MARCH_Z9_109) := -march=z9-109 mflags-$(CONFIG_MARCH_Z10) := -march=z10 mflags-$(CONFIG_MARCH_Z196) := -march=z196 mflags-$(CONFIG_MARCH_ZEC12) := -march=zEC12 mflags-$(CONFIG_MARCH_Z13) := -march=z13 mflags-$(CONFIG_MARCH_Z14) := -march=z14 mflags-$(CONFIG_MARCH_Z15) := -march=z15 export CC_FLAGS_MARCH := $(mflags-y) aflags-y += $(mflags-y) cflags-y += $(mflags-y) cflags-$(CONFIG_MARCH_Z900_TUNE) += -mtune=z900 cflags-$(CONFIG_MARCH_Z990_TUNE) += -mtune=z990 cflags-$(CONFIG_MARCH_Z9_109_TUNE) += -mtune=z9-109 cflags-$(CONFIG_MARCH_Z10_TUNE) += -mtune=z10 cflags-$(CONFIG_MARCH_Z196_TUNE) += -mtune=z196 cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mtune=zEC12 cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13 cflags-$(CONFIG_MARCH_Z14_TUNE) += -mtune=z14 cflags-$(CONFIG_MARCH_Z15_TUNE) += -mtune=z15 cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include # # Prevent tail-call optimizations, to get clearer backtraces: # cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls ifeq ($(call cc-option-yn,-mpacked-stack -mbackchain -msoft-float),y) cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK endif KBUILD_AFLAGS_DECOMPRESSOR += $(aflags-y) KBUILD_CFLAGS_DECOMPRESSOR += $(cflags-y) ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y) cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE) ifneq ($(call cc-option-yn,-mstack-size=8192),y) cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD) endif endif ifdef CONFIG_WARN_DYNAMIC_STACK ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y) KBUILD_CFLAGS += -mwarn-dynamicstack KBUILD_CFLAGS_DECOMPRESSOR += -mwarn-dynamicstack endif endif ifdef CONFIG_EXPOLINE ifeq ($(call cc-option-yn,$(CC_FLAGS_MARCH) -mindirect-branch=thunk),y) CC_FLAGS_EXPOLINE := -mindirect-branch=thunk CC_FLAGS_EXPOLINE += -mfunction-return=thunk CC_FLAGS_EXPOLINE += -mindirect-branch-table export CC_FLAGS_EXPOLINE cflags-y += $(CC_FLAGS_EXPOLINE) -DCC_USING_EXPOLINE aflags-y += -DCC_USING_EXPOLINE endif endif ifdef CONFIG_FUNCTION_TRACER ifeq ($(call cc-option-yn,-mfentry -mnop-mcount),n) # make use of hotpatch feature if the compiler supports it cc_hotpatch := -mhotpatch=0,3 ifeq ($(call cc-option-yn,$(cc_hotpatch)),y) CC_FLAGS_FTRACE := $(cc_hotpatch) KBUILD_AFLAGS += -DCC_USING_HOTPATCH KBUILD_CFLAGS += -DCC_USING_HOTPATCH endif endif endif # Test CFI features of binutils cfi := $(call as-instr,.cfi_startproc\n.cfi_val_offset 15$(comma)-160\n.cfi_endproc,-DCONFIG_AS_CFI_VAL_OFFSET=1) KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y) KBUILD_CFLAGS += -pipe -Wno-sign-compare KBUILD_CFLAGS += -fno-asynchronous-unwind-tables $(cfi) KBUILD_AFLAGS += $(aflags-y) $(cfi) export KBUILD_AFLAGS_DECOMPRESSOR export KBUILD_CFLAGS_DECOMPRESSOR OBJCOPYFLAGS := -O binary head-y := arch/s390/kernel/head64.o # See arch/s390/Kbuild for content of core part of the kernel core-y += arch/s390/ libs-y += arch/s390/lib/ drivers-y += drivers/s390/ # must be linked after kernel drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/ boot := arch/s390/boot syscalls := arch/s390/kernel/syscalls tools := arch/s390/tools all: bzImage #KBUILD_IMAGE is necessary for packaging targets like rpm-pkg, deb-pkg... KBUILD_IMAGE := $(boot)/bzImage install: $(Q)$(MAKE) $(build)=$(boot) $@ bzImage: vmlinux $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ zfcpdump: $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ vdso_install: $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ archclean: $(Q)$(MAKE) $(clean)=$(boot) $(Q)$(MAKE) $(clean)=$(tools) archheaders: $(Q)$(MAKE) $(build)=$(syscalls) uapi archprepare: $(Q)$(MAKE) $(build)=$(syscalls) kapi $(Q)$(MAKE) $(build)=$(tools) kapi # Don't use tabs in echo arguments define archhelp echo '* bzImage - Kernel image for IPL ($(boot)/bzImage)' echo ' install - Install kernel using' echo ' (your) ~/bin/$(INSTALLKERNEL) or' echo ' (distribution) /sbin/$(INSTALLKERNEL) or' echo ' install to $$(INSTALL_PATH)' endef |