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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 | |
6 | # architecture-specific flags and dependencies. Remember to do have actions | |
7 | # for "archclean" and "archdep" for cleaning up and making dependencies for | |
8 | # this architecture | |
9 | # | |
1da177e4 LT |
10 | # Copyright (C) 1994 by Linus Torvalds |
11 | # | |
12 | ||
1844c9bc | 13 | LD_BFD := elf64-s390 |
d503ac53 | 14 | KBUILD_LDFLAGS := -m elf64_s390 |
7bdc229f MS |
15 | KBUILD_AFLAGS_MODULE += -fPIC |
16 | KBUILD_CFLAGS_MODULE += -fPIC | |
222d394d | 17 | KBUILD_AFLAGS += -m64 |
76bf9d6c | 18 | KBUILD_CFLAGS += -m64 |
805bc0bc GS |
19 | ifeq ($(CONFIG_RELOCATABLE),y) |
20 | KBUILD_CFLAGS += -fPIE | |
21 | LDFLAGS_vmlinux := -pie | |
22 | endif | |
ee6d777d | 23 | aflags_dwarf := -Wa,-gdwarf-2 |
96fb54a1 | 24 | KBUILD_AFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -D__ASSEMBLY__ |
ee6d777d | 25 | KBUILD_AFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),$(aflags_dwarf)) |
96fb54a1 | 26 | KBUILD_CFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -O2 |
76bf9d6c VG |
27 | KBUILD_CFLAGS_DECOMPRESSOR += -DDISABLE_BRANCH_PROFILING -D__NO_FORTIFY |
28 | KBUILD_CFLAGS_DECOMPRESSOR += -fno-delete-null-pointer-checks -msoft-float | |
29 | KBUILD_CFLAGS_DECOMPRESSOR += -fno-asynchronous-unwind-tables | |
685969e0 | 30 | KBUILD_CFLAGS_DECOMPRESSOR += -ffreestanding |
f9364df3 | 31 | KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-disable-warning, address-of-packed-member) |
ee6d777d VG |
32 | KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),-g) |
33 | KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO_DWARF4), $(call cc-option, -gdwarf-4,)) | |
1da177e4 | 34 | UTS_MACHINE := s390x |
9fed920e | 35 | STACK_SIZE := $(if $(CONFIG_KASAN),65536,16384) |
14516765 | 36 | CHECKFLAGS += -D__s390__ -D__s390x__ |
1da177e4 | 37 | |
1844c9bc MS |
38 | export LD_BFD |
39 | ||
0f1b1ff5 HC |
40 | mflags-$(CONFIG_MARCH_Z900) := -march=z900 |
41 | mflags-$(CONFIG_MARCH_Z990) := -march=z990 | |
42 | mflags-$(CONFIG_MARCH_Z9_109) := -march=z9-109 | |
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 |
0f1b1ff5 | 49 | |
22362a0e MS |
50 | export CC_FLAGS_MARCH := $(mflags-y) |
51 | ||
0f1b1ff5 HC |
52 | aflags-y += $(mflags-y) |
53 | cflags-y += $(mflags-y) | |
1da177e4 | 54 | |
1db9e051 HC |
55 | cflags-$(CONFIG_MARCH_Z900_TUNE) += -mtune=z900 |
56 | cflags-$(CONFIG_MARCH_Z990_TUNE) += -mtune=z990 | |
57 | cflags-$(CONFIG_MARCH_Z9_109_TUNE) += -mtune=z9-109 | |
58 | cflags-$(CONFIG_MARCH_Z10_TUNE) += -mtune=z10 | |
59 | cflags-$(CONFIG_MARCH_Z196_TUNE) += -mtune=z196 | |
60 | cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mtune=zEC12 | |
6997c323 MS |
61 | cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13 |
62 | cflags-$(CONFIG_MARCH_Z14_TUNE) += -mtune=z14 | |
a0e22511 | 63 | cflags-$(CONFIG_MARCH_Z15_TUNE) += -mtune=z15 |
1db9e051 | 64 | |
c783b91e MS |
65 | cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include |
66 | ||
cbbd1fa7 HC |
67 | # |
68 | # Prevent tail-call optimizations, to get clearer backtraces: | |
69 | # | |
70 | cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls | |
71 | ||
253b3c4b | 72 | ifeq ($(call cc-option-yn,-mpacked-stack -mbackchain -msoft-float),y) |
1da177e4 LT |
73 | cflags-$(CONFIG_PACK_STACK) += -mpacked-stack -D__PACK_STACK |
74 | aflags-$(CONFIG_PACK_STACK) += -D__PACK_STACK | |
1da177e4 LT |
75 | endif |
76 | ||
76bf9d6c VG |
77 | KBUILD_AFLAGS_DECOMPRESSOR += $(aflags-y) |
78 | KBUILD_CFLAGS_DECOMPRESSOR += $(cflags-y) | |
79 | ||
1da177e4 LT |
80 | ifeq ($(call cc-option-yn,-mstack-size=8192 -mstack-guard=128),y) |
81 | cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE) | |
be796285 | 82 | ifneq ($(call cc-option-yn,-mstack-size=8192),y) |
1da177e4 LT |
83 | cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD) |
84 | endif | |
be796285 | 85 | endif |
1da177e4 | 86 | |
76bf9d6c VG |
87 | ifdef CONFIG_WARN_DYNAMIC_STACK |
88 | ifeq ($(call cc-option-yn,-mwarn-dynamicstack),y) | |
89 | KBUILD_CFLAGS += -mwarn-dynamicstack | |
90 | KBUILD_CFLAGS_DECOMPRESSOR += -mwarn-dynamicstack | |
91 | endif | |
1da177e4 LT |
92 | endif |
93 | ||
f19fbd5e MS |
94 | ifdef CONFIG_EXPOLINE |
95 | ifeq ($(call cc-option-yn,$(CC_FLAGS_MARCH) -mindirect-branch=thunk),y) | |
96 | CC_FLAGS_EXPOLINE := -mindirect-branch=thunk | |
97 | CC_FLAGS_EXPOLINE += -mfunction-return=thunk | |
98 | CC_FLAGS_EXPOLINE += -mindirect-branch-table | |
99 | export CC_FLAGS_EXPOLINE | |
6e179d64 | 100 | cflags-y += $(CC_FLAGS_EXPOLINE) -DCC_USING_EXPOLINE |
157484ab | 101 | aflags-y += -DCC_USING_EXPOLINE |
f19fbd5e MS |
102 | endif |
103 | endif | |
104 | ||
e6d60b36 | 105 | ifdef CONFIG_FUNCTION_TRACER |
d983c89c VG |
106 | ifeq ($(call cc-option-yn,-mfentry -mnop-mcount),n) |
107 | # make use of hotpatch feature if the compiler supports it | |
108 | cc_hotpatch := -mhotpatch=0,3 | |
109 | ifeq ($(call cc-option-yn,$(cc_hotpatch)),y) | |
110 | CC_FLAGS_FTRACE := $(cc_hotpatch) | |
111 | KBUILD_AFLAGS += -DCC_USING_HOTPATCH | |
112 | KBUILD_CFLAGS += -DCC_USING_HOTPATCH | |
113 | endif | |
114 | endif | |
e6d60b36 HC |
115 | endif |
116 | ||
7bceec4e HB |
117 | # Test CFI features of binutils |
118 | cfi := $(call as-instr,.cfi_startproc\n.cfi_val_offset 15$(comma)-160\n.cfi_endproc,-DCONFIG_AS_CFI_VAL_OFFSET=1) | |
119 | ||
a0f97e06 | 120 | KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y) |
c1afcaec | 121 | KBUILD_CFLAGS += -pipe -Wno-sign-compare |
7bceec4e HB |
122 | KBUILD_CFLAGS += -fno-asynchronous-unwind-tables $(cfi) |
123 | KBUILD_AFLAGS += $(aflags-y) $(cfi) | |
76bf9d6c VG |
124 | export KBUILD_AFLAGS_DECOMPRESSOR |
125 | export KBUILD_CFLAGS_DECOMPRESSOR | |
1da177e4 LT |
126 | |
127 | OBJCOPYFLAGS := -O binary | |
1da177e4 | 128 | |
8282cd64 | 129 | head-y := arch/s390/kernel/head64.o |
1da177e4 | 130 | |
01485943 HC |
131 | # See arch/s390/Kbuild for content of core part of the kernel |
132 | core-y += arch/s390/ | |
155af2f9 | 133 | |
4562c9ff | 134 | libs-y += arch/s390/lib/ |
1da177e4 | 135 | drivers-y += drivers/s390/ |
1da177e4 LT |
136 | |
137 | # must be linked after kernel | |
138 | drivers-$(CONFIG_OPROFILE) += arch/s390/oprofile/ | |
139 | ||
4562c9ff | 140 | boot := arch/s390/boot |
5c75824d | 141 | syscalls := arch/s390/kernel/syscalls |
c30f6828 | 142 | tools := arch/s390/tools |
1da177e4 | 143 | |
00f2fb57 | 144 | all: bzImage |
1da177e4 | 145 | |
e0aa099c VG |
146 | #KBUILD_IMAGE is necessary for packaging targets like rpm-pkg, deb-pkg... |
147 | KBUILD_IMAGE := $(boot)/bzImage | |
148 | ||
94e90f72 | 149 | install: |
1da177e4 LT |
150 | $(Q)$(MAKE) $(build)=$(boot) $@ |
151 | ||
00f2fb57 | 152 | bzImage: vmlinux |
1da177e4 LT |
153 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ |
154 | ||
411ed322 MH |
155 | zfcpdump: |
156 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ | |
157 | ||
f3cb31e4 | 158 | vdso_install: |
f3cb31e4 | 159 | $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ |
f3cb31e4 | 160 | |
1da177e4 LT |
161 | archclean: |
162 | $(Q)$(MAKE) $(clean)=$(boot) | |
c30f6828 HC |
163 | $(Q)$(MAKE) $(clean)=$(tools) |
164 | ||
5c75824d HB |
165 | archheaders: |
166 | $(Q)$(MAKE) $(build)=$(syscalls) uapi | |
167 | ||
c30f6828 | 168 | archprepare: |
5c75824d | 169 | $(Q)$(MAKE) $(build)=$(syscalls) kapi |
7fbf8315 | 170 | $(Q)$(MAKE) $(build)=$(tools) kapi |
1da177e4 | 171 | |
1da177e4 LT |
172 | # Don't use tabs in echo arguments |
173 | define archhelp | |
00f2fb57 | 174 | echo '* bzImage - Kernel image for IPL ($(boot)/bzImage)' |
b8eecf36 MH |
175 | echo ' install - Install kernel using' |
176 | echo ' (your) ~/bin/$(INSTALLKERNEL) or' | |
177 | echo ' (distribution) /sbin/$(INSTALLKERNEL) or' | |
178 | echo ' install to $$(INSTALL_PATH)' | |
1da177e4 | 179 | endef |