Commit | Line | Data |
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0b73214f | 1 | # SPDX-License-Identifier: GPL-2.0 |
1da177e4 LT |
2 | # |
3 | # s390/Makefile | |
4 | # | |
5 | # This file is included by the global makefile so that you can add your own | |
8212f898 | 6 | # architecture-specific flags and dependencies. |
1da177e4 | 7 | # |
1da177e4 LT |
8 | # Copyright (C) 1994 by Linus Torvalds |
9 | # | |
10 | ||
1844c9bc | 11 | LD_BFD := elf64-s390 |
d503ac53 | 12 | KBUILD_LDFLAGS := -m elf64_s390 |
7bdc229f MS |
13 | KBUILD_AFLAGS_MODULE += -fPIC |
14 | KBUILD_CFLAGS_MODULE += -fPIC | |
222d394d | 15 | KBUILD_AFLAGS += -m64 |
76bf9d6c | 16 | KBUILD_CFLAGS += -m64 |
805bc0bc GS |
17 | ifeq ($(CONFIG_RELOCATABLE),y) |
18 | KBUILD_CFLAGS += -fPIE | |
19 | LDFLAGS_vmlinux := -pie | |
20 | endif | |
ee6d777d | 21 | aflags_dwarf := -Wa,-gdwarf-2 |
96fb54a1 | 22 | KBUILD_AFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -D__ASSEMBLY__ |
bb31074d | 23 | ifndef CONFIG_AS_IS_LLVM |
ee6d777d | 24 | KBUILD_AFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),$(aflags_dwarf)) |
bb31074d | 25 | endif |
42b01a55 | 26 | KBUILD_CFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -O2 -mpacked-stack |
76bf9d6c | 27 | KBUILD_CFLAGS_DECOMPRESSOR += -DDISABLE_BRANCH_PROFILING -D__NO_FORTIFY |
8977ab65 | 28 | KBUILD_CFLAGS_DECOMPRESSOR += -fno-delete-null-pointer-checks -msoft-float -mbackchain |
76bf9d6c | 29 | KBUILD_CFLAGS_DECOMPRESSOR += -fno-asynchronous-unwind-tables |
685969e0 | 30 | KBUILD_CFLAGS_DECOMPRESSOR += -ffreestanding |
42e8d652 | 31 | KBUILD_CFLAGS_DECOMPRESSOR += -fno-stack-protector |
f9364df3 | 32 | KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-disable-warning, address-of-packed-member) |
ee6d777d VG |
33 | KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),-g) |
34 | KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO_DWARF4), $(call cc-option, -gdwarf-4,)) | |
f0be87c4 | 35 | KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_CC_NO_ARRAY_BOUNDS),-Wno-array-bounds) |
8b202ee2 | 36 | |
1da177e4 | 37 | UTS_MACHINE := s390x |
9fed920e | 38 | STACK_SIZE := $(if $(CONFIG_KASAN),65536,16384) |
14516765 | 39 | CHECKFLAGS += -D__s390__ -D__s390x__ |
1da177e4 | 40 | |
1844c9bc MS |
41 | export LD_BFD |
42 | ||
0f1b1ff5 HC |
43 | mflags-$(CONFIG_MARCH_Z10) := -march=z10 |
44 | mflags-$(CONFIG_MARCH_Z196) := -march=z196 | |
45 | mflags-$(CONFIG_MARCH_ZEC12) := -march=zEC12 | |
6997c323 MS |
46 | mflags-$(CONFIG_MARCH_Z13) := -march=z13 |
47 | mflags-$(CONFIG_MARCH_Z14) := -march=z14 | |
a0e22511 | 48 | mflags-$(CONFIG_MARCH_Z15) := -march=z15 |
e69a7ff8 | 49 | mflags-$(CONFIG_MARCH_Z16) := -march=z16 |
0f1b1ff5 | 50 | |
22362a0e MS |
51 | export CC_FLAGS_MARCH := $(mflags-y) |
52 | ||
0f1b1ff5 HC |
53 | aflags-y += $(mflags-y) |
54 | cflags-y += $(mflags-y) | |
1da177e4 | 55 | |
1db9e051 HC |
56 | cflags-$(CONFIG_MARCH_Z10_TUNE) += -mtune=z10 |
57 | cflags-$(CONFIG_MARCH_Z196_TUNE) += -mtune=z196 | |
58 | cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mtune=zEC12 | |
6997c323 MS |
59 | cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13 |
60 | cflags-$(CONFIG_MARCH_Z14_TUNE) += -mtune=z14 | |
a0e22511 | 61 | cflags-$(CONFIG_MARCH_Z15_TUNE) += -mtune=z15 |
e69a7ff8 | 62 | cflags-$(CONFIG_MARCH_Z16_TUNE) += -mtune=z16 |
1db9e051 | 63 | |
c783b91e MS |
64 | cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include |
65 | ||
cbbd1fa7 HC |
66 | # |
67 | # Prevent tail-call optimizations, to get clearer backtraces: | |
68 | # | |
69 | cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls | |
70 | ||
76bf9d6c VG |
71 | KBUILD_AFLAGS_DECOMPRESSOR += $(aflags-y) |
72 | KBUILD_CFLAGS_DECOMPRESSOR += $(cflags-y) | |
73 | ||
ff00f64b | 74 | ifneq ($(call cc-option,-mstack-size=8192 -mstack-guard=128),) |
00b55eaf SS |
75 | CC_FLAGS_CHECK_STACK := -mstack-size=$(STACK_SIZE) |
76 | ifeq ($(call cc-option,-mstack-size=8192),) | |
77 | CC_FLAGS_CHECK_STACK += -mstack-guard=$(CONFIG_STACK_GUARD) | |
78 | endif | |
79 | export CC_FLAGS_CHECK_STACK | |
80 | cflags-$(CONFIG_CHECK_STACK) += $(CC_FLAGS_CHECK_STACK) | |
be796285 | 81 | endif |
1da177e4 | 82 | |
f19fbd5e | 83 | ifdef CONFIG_EXPOLINE |
1d2ad084 | 84 | ifdef CONFIG_EXPOLINE_EXTERN |
c4e78957 | 85 | KBUILD_LDFLAGS_MODULE += arch/s390/lib/expoline/expoline.o |
1d2ad084 VG |
86 | CC_FLAGS_EXPOLINE := -mindirect-branch=thunk-extern |
87 | CC_FLAGS_EXPOLINE += -mfunction-return=thunk-extern | |
88 | else | |
f19fbd5e MS |
89 | CC_FLAGS_EXPOLINE := -mindirect-branch=thunk |
90 | CC_FLAGS_EXPOLINE += -mfunction-return=thunk | |
f19fbd5e | 91 | endif |
1d2ad084 VG |
92 | CC_FLAGS_EXPOLINE += -mindirect-branch-table |
93 | export CC_FLAGS_EXPOLINE | |
94 | cflags-y += $(CC_FLAGS_EXPOLINE) -DCC_USING_EXPOLINE | |
95 | aflags-y += -DCC_USING_EXPOLINE | |
f19fbd5e MS |
96 | endif |
97 | ||
e6d60b36 | 98 | ifdef CONFIG_FUNCTION_TRACER |
ff00f64b | 99 | ifeq ($(call cc-option,-mfentry -mnop-mcount),) |
d983c89c VG |
100 | # make use of hotpatch feature if the compiler supports it |
101 | cc_hotpatch := -mhotpatch=0,3 | |
ff00f64b | 102 | ifneq ($(call cc-option,$(cc_hotpatch)),) |
d983c89c VG |
103 | CC_FLAGS_FTRACE := $(cc_hotpatch) |
104 | KBUILD_AFLAGS += -DCC_USING_HOTPATCH | |
105 | KBUILD_CFLAGS += -DCC_USING_HOTPATCH | |
106 | endif | |
107 | endif | |
e6d60b36 HC |
108 | endif |
109 | ||
7bceec4e HB |
110 | # Test CFI features of binutils |
111 | cfi := $(call as-instr,.cfi_startproc\n.cfi_val_offset 15$(comma)-160\n.cfi_endproc,-DCONFIG_AS_CFI_VAL_OFFSET=1) | |
112 | ||
42b01a55 | 113 | KBUILD_CFLAGS += -mpacked-stack -mbackchain -msoft-float $(cflags-y) |
c1afcaec | 114 | KBUILD_CFLAGS += -pipe -Wno-sign-compare |
7bceec4e HB |
115 | KBUILD_CFLAGS += -fno-asynchronous-unwind-tables $(cfi) |
116 | KBUILD_AFLAGS += $(aflags-y) $(cfi) | |
76bf9d6c VG |
117 | export KBUILD_AFLAGS_DECOMPRESSOR |
118 | export KBUILD_CFLAGS_DECOMPRESSOR | |
1da177e4 LT |
119 | |
120 | OBJCOPYFLAGS := -O binary | |
1da177e4 | 121 | |
8282cd64 | 122 | head-y := arch/s390/kernel/head64.o |
1da177e4 | 123 | |
4562c9ff | 124 | libs-y += arch/s390/lib/ |
1da177e4 | 125 | drivers-y += drivers/s390/ |
1da177e4 | 126 | |
4562c9ff | 127 | boot := arch/s390/boot |
5c75824d | 128 | syscalls := arch/s390/kernel/syscalls |
c30f6828 | 129 | tools := arch/s390/tools |
1da177e4 | 130 | |
00f2fb57 | 131 | all: bzImage |
1da177e4 | 132 | |
e0aa099c VG |
133 | #KBUILD_IMAGE is necessary for packaging targets like rpm-pkg, deb-pkg... |
134 | KBUILD_IMAGE := $(boot)/bzImage | |
135 | ||
94e90f72 | 136 | install: |
f774f5bb | 137 | $(call cmd,install) |
1da177e4 | 138 | |
00f2fb57 | 139 | bzImage: vmlinux |
1da177e4 LT |
140 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ |
141 | ||
411ed322 MH |
142 | zfcpdump: |
143 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ | |
144 | ||
f3cb31e4 | 145 | vdso_install: |
f3cb31e4 | 146 | $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ |
f3cb31e4 | 147 | |
5c75824d HB |
148 | archheaders: |
149 | $(Q)$(MAKE) $(build)=$(syscalls) uapi | |
150 | ||
c30f6828 | 151 | archprepare: |
5c75824d | 152 | $(Q)$(MAKE) $(build)=$(syscalls) kapi |
7fbf8315 | 153 | $(Q)$(MAKE) $(build)=$(tools) kapi |
779df224 SS |
154 | ifeq ($(KBUILD_EXTMOD),) |
155 | # We need to generate vdso-offsets.h before compiling certain files in kernel/. | |
156 | # In order to do that, we should use the archprepare target, but we can't since | |
157 | # asm-offsets.h is included in some files used to generate vdso-offsets.h, and | |
158 | # asm-offsets.h is built in prepare0, for which archprepare is a dependency. | |
159 | # Therefore we need to generate the header after prepare0 has been made, hence | |
160 | # this hack. | |
161 | prepare: vdso_prepare | |
162 | vdso_prepare: prepare0 | |
163 | $(Q)$(MAKE) $(build)=arch/s390/kernel/vdso64 include/generated/vdso64-offsets.h | |
164 | $(if $(CONFIG_COMPAT),$(Q)$(MAKE) \ | |
165 | $(build)=arch/s390/kernel/vdso32 include/generated/vdso32-offsets.h) | |
c4e78957 VG |
166 | |
167 | ifdef CONFIG_EXPOLINE_EXTERN | |
168 | modules_prepare: expoline_prepare | |
a0b0987a | 169 | expoline_prepare: |
c4e78957 VG |
170 | $(Q)$(MAKE) $(build)=arch/s390/lib/expoline arch/s390/lib/expoline/expoline.o |
171 | endif | |
779df224 | 172 | endif |
1da177e4 | 173 | |
1da177e4 LT |
174 | # Don't use tabs in echo arguments |
175 | define archhelp | |
00f2fb57 | 176 | echo '* bzImage - Kernel image for IPL ($(boot)/bzImage)' |
b8eecf36 MH |
177 | echo ' install - Install kernel using' |
178 | echo ' (your) ~/bin/$(INSTALLKERNEL) or' | |
179 | echo ' (distribution) /sbin/$(INSTALLKERNEL) or' | |
180 | echo ' install to $$(INSTALL_PATH)' | |
1da177e4 | 181 | endef |