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__ |
ee6d777d | 23 | KBUILD_AFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),$(aflags_dwarf)) |
42b01a55 | 24 | KBUILD_CFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -O2 -mpacked-stack |
76bf9d6c | 25 | KBUILD_CFLAGS_DECOMPRESSOR += -DDISABLE_BRANCH_PROFILING -D__NO_FORTIFY |
8977ab65 | 26 | KBUILD_CFLAGS_DECOMPRESSOR += -fno-delete-null-pointer-checks -msoft-float -mbackchain |
76bf9d6c | 27 | KBUILD_CFLAGS_DECOMPRESSOR += -fno-asynchronous-unwind-tables |
685969e0 | 28 | KBUILD_CFLAGS_DECOMPRESSOR += -ffreestanding |
42e8d652 | 29 | KBUILD_CFLAGS_DECOMPRESSOR += -fno-stack-protector |
f9364df3 | 30 | KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-disable-warning, address-of-packed-member) |
ee6d777d VG |
31 | KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),-g) |
32 | KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO_DWARF4), $(call cc-option, -gdwarf-4,)) | |
1da177e4 | 33 | UTS_MACHINE := s390x |
9fed920e | 34 | STACK_SIZE := $(if $(CONFIG_KASAN),65536,16384) |
14516765 | 35 | CHECKFLAGS += -D__s390__ -D__s390x__ |
1da177e4 | 36 | |
1844c9bc MS |
37 | export LD_BFD |
38 | ||
0f1b1ff5 HC |
39 | mflags-$(CONFIG_MARCH_Z10) := -march=z10 |
40 | mflags-$(CONFIG_MARCH_Z196) := -march=z196 | |
41 | mflags-$(CONFIG_MARCH_ZEC12) := -march=zEC12 | |
6997c323 MS |
42 | mflags-$(CONFIG_MARCH_Z13) := -march=z13 |
43 | mflags-$(CONFIG_MARCH_Z14) := -march=z14 | |
a0e22511 | 44 | mflags-$(CONFIG_MARCH_Z15) := -march=z15 |
0f1b1ff5 | 45 | |
22362a0e MS |
46 | export CC_FLAGS_MARCH := $(mflags-y) |
47 | ||
0f1b1ff5 HC |
48 | aflags-y += $(mflags-y) |
49 | cflags-y += $(mflags-y) | |
1da177e4 | 50 | |
1db9e051 HC |
51 | cflags-$(CONFIG_MARCH_Z10_TUNE) += -mtune=z10 |
52 | cflags-$(CONFIG_MARCH_Z196_TUNE) += -mtune=z196 | |
53 | cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mtune=zEC12 | |
6997c323 MS |
54 | cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13 |
55 | cflags-$(CONFIG_MARCH_Z14_TUNE) += -mtune=z14 | |
a0e22511 | 56 | cflags-$(CONFIG_MARCH_Z15_TUNE) += -mtune=z15 |
1db9e051 | 57 | |
c783b91e MS |
58 | cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include |
59 | ||
cbbd1fa7 HC |
60 | # |
61 | # Prevent tail-call optimizations, to get clearer backtraces: | |
62 | # | |
63 | cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls | |
64 | ||
76bf9d6c VG |
65 | KBUILD_AFLAGS_DECOMPRESSOR += $(aflags-y) |
66 | KBUILD_CFLAGS_DECOMPRESSOR += $(cflags-y) | |
67 | ||
ff00f64b | 68 | ifneq ($(call cc-option,-mstack-size=8192 -mstack-guard=128),) |
00b55eaf SS |
69 | CC_FLAGS_CHECK_STACK := -mstack-size=$(STACK_SIZE) |
70 | ifeq ($(call cc-option,-mstack-size=8192),) | |
71 | CC_FLAGS_CHECK_STACK += -mstack-guard=$(CONFIG_STACK_GUARD) | |
72 | endif | |
73 | export CC_FLAGS_CHECK_STACK | |
74 | cflags-$(CONFIG_CHECK_STACK) += $(CC_FLAGS_CHECK_STACK) | |
be796285 | 75 | endif |
1da177e4 | 76 | |
f19fbd5e | 77 | ifdef CONFIG_EXPOLINE |
1d2ad084 VG |
78 | ifdef CONFIG_EXPOLINE_EXTERN |
79 | KBUILD_LDFLAGS_MODULE += arch/s390/lib/expoline.o | |
80 | CC_FLAGS_EXPOLINE := -mindirect-branch=thunk-extern | |
81 | CC_FLAGS_EXPOLINE += -mfunction-return=thunk-extern | |
82 | else | |
f19fbd5e MS |
83 | CC_FLAGS_EXPOLINE := -mindirect-branch=thunk |
84 | CC_FLAGS_EXPOLINE += -mfunction-return=thunk | |
f19fbd5e | 85 | endif |
1d2ad084 VG |
86 | CC_FLAGS_EXPOLINE += -mindirect-branch-table |
87 | export CC_FLAGS_EXPOLINE | |
88 | cflags-y += $(CC_FLAGS_EXPOLINE) -DCC_USING_EXPOLINE | |
89 | aflags-y += -DCC_USING_EXPOLINE | |
f19fbd5e MS |
90 | endif |
91 | ||
e6d60b36 | 92 | ifdef CONFIG_FUNCTION_TRACER |
ff00f64b | 93 | ifeq ($(call cc-option,-mfentry -mnop-mcount),) |
d983c89c VG |
94 | # make use of hotpatch feature if the compiler supports it |
95 | cc_hotpatch := -mhotpatch=0,3 | |
ff00f64b | 96 | ifneq ($(call cc-option,$(cc_hotpatch)),) |
d983c89c VG |
97 | CC_FLAGS_FTRACE := $(cc_hotpatch) |
98 | KBUILD_AFLAGS += -DCC_USING_HOTPATCH | |
99 | KBUILD_CFLAGS += -DCC_USING_HOTPATCH | |
100 | endif | |
101 | endif | |
e6d60b36 HC |
102 | endif |
103 | ||
7bceec4e HB |
104 | # Test CFI features of binutils |
105 | cfi := $(call as-instr,.cfi_startproc\n.cfi_val_offset 15$(comma)-160\n.cfi_endproc,-DCONFIG_AS_CFI_VAL_OFFSET=1) | |
106 | ||
42b01a55 | 107 | KBUILD_CFLAGS += -mpacked-stack -mbackchain -msoft-float $(cflags-y) |
c1afcaec | 108 | KBUILD_CFLAGS += -pipe -Wno-sign-compare |
7bceec4e HB |
109 | KBUILD_CFLAGS += -fno-asynchronous-unwind-tables $(cfi) |
110 | KBUILD_AFLAGS += $(aflags-y) $(cfi) | |
76bf9d6c VG |
111 | export KBUILD_AFLAGS_DECOMPRESSOR |
112 | export KBUILD_CFLAGS_DECOMPRESSOR | |
1da177e4 LT |
113 | |
114 | OBJCOPYFLAGS := -O binary | |
1da177e4 | 115 | |
8282cd64 | 116 | head-y := arch/s390/kernel/head64.o |
1da177e4 | 117 | |
4562c9ff | 118 | libs-y += arch/s390/lib/ |
1da177e4 | 119 | drivers-y += drivers/s390/ |
1da177e4 | 120 | |
4562c9ff | 121 | boot := arch/s390/boot |
5c75824d | 122 | syscalls := arch/s390/kernel/syscalls |
c30f6828 | 123 | tools := arch/s390/tools |
1da177e4 | 124 | |
00f2fb57 | 125 | all: bzImage |
1da177e4 | 126 | |
e0aa099c VG |
127 | #KBUILD_IMAGE is necessary for packaging targets like rpm-pkg, deb-pkg... |
128 | KBUILD_IMAGE := $(boot)/bzImage | |
129 | ||
94e90f72 | 130 | install: |
d80d3ea6 MY |
131 | sh -x $(srctree)/$(boot)/install.sh $(KERNELRELEASE) $(KBUILD_IMAGE) \ |
132 | System.map "$(INSTALL_PATH)" | |
1da177e4 | 133 | |
00f2fb57 | 134 | bzImage: vmlinux |
1da177e4 LT |
135 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ |
136 | ||
411ed322 MH |
137 | zfcpdump: |
138 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ | |
139 | ||
f3cb31e4 | 140 | vdso_install: |
f3cb31e4 | 141 | $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ |
f3cb31e4 | 142 | |
5c75824d HB |
143 | archheaders: |
144 | $(Q)$(MAKE) $(build)=$(syscalls) uapi | |
145 | ||
c30f6828 | 146 | archprepare: |
5c75824d | 147 | $(Q)$(MAKE) $(build)=$(syscalls) kapi |
7fbf8315 | 148 | $(Q)$(MAKE) $(build)=$(tools) kapi |
779df224 SS |
149 | ifeq ($(KBUILD_EXTMOD),) |
150 | # We need to generate vdso-offsets.h before compiling certain files in kernel/. | |
151 | # In order to do that, we should use the archprepare target, but we can't since | |
152 | # asm-offsets.h is included in some files used to generate vdso-offsets.h, and | |
153 | # asm-offsets.h is built in prepare0, for which archprepare is a dependency. | |
154 | # Therefore we need to generate the header after prepare0 has been made, hence | |
155 | # this hack. | |
156 | prepare: vdso_prepare | |
157 | vdso_prepare: prepare0 | |
158 | $(Q)$(MAKE) $(build)=arch/s390/kernel/vdso64 include/generated/vdso64-offsets.h | |
159 | $(if $(CONFIG_COMPAT),$(Q)$(MAKE) \ | |
160 | $(build)=arch/s390/kernel/vdso32 include/generated/vdso32-offsets.h) | |
161 | endif | |
1da177e4 | 162 | |
1da177e4 LT |
163 | # Don't use tabs in echo arguments |
164 | define archhelp | |
00f2fb57 | 165 | echo '* bzImage - Kernel image for IPL ($(boot)/bzImage)' |
b8eecf36 MH |
166 | echo ' install - Install kernel using' |
167 | echo ' (your) ~/bin/$(INSTALLKERNEL) or' | |
168 | echo ' (distribution) /sbin/$(INSTALLKERNEL) or' | |
169 | echo ' install to $$(INSTALL_PATH)' | |
1da177e4 | 170 | endef |