RISCV: configs: tizen_visionfive2: Enable DM_BOW feature
[platform/kernel/linux-starfive.git] / arch / s390 / Makefile
1 # SPDX-License-Identifier: GPL-2.0
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.
7 #
8 # Copyright (C) 1994 by Linus Torvalds
9 #
10
11 LD_BFD          := elf64-s390
12 KBUILD_LDFLAGS  := -m elf64_s390
13 KBUILD_AFLAGS_MODULE += -fPIC
14 KBUILD_CFLAGS_MODULE += -fPIC
15 KBUILD_AFLAGS   += -m64
16 KBUILD_CFLAGS   += -m64
17 KBUILD_CFLAGS   += -fPIE
18 LDFLAGS_vmlinux := -pie
19 aflags_dwarf    := -Wa,-gdwarf-2
20 KBUILD_AFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -D__ASSEMBLY__
21 ifndef CONFIG_AS_IS_LLVM
22 KBUILD_AFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),$(aflags_dwarf))
23 endif
24 KBUILD_CFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -O2 -mpacked-stack
25 KBUILD_CFLAGS_DECOMPRESSOR += -DDISABLE_BRANCH_PROFILING -D__NO_FORTIFY
26 KBUILD_CFLAGS_DECOMPRESSOR += -fno-delete-null-pointer-checks -msoft-float -mbackchain
27 KBUILD_CFLAGS_DECOMPRESSOR += -fno-asynchronous-unwind-tables
28 KBUILD_CFLAGS_DECOMPRESSOR += -ffreestanding
29 KBUILD_CFLAGS_DECOMPRESSOR += -fno-stack-protector
30 KBUILD_CFLAGS_DECOMPRESSOR += -fPIE
31 KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-disable-warning, address-of-packed-member)
32 KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),-g)
33 KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO_DWARF4), $(call cc-option, -gdwarf-4,))
34 KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_CC_NO_ARRAY_BOUNDS),-Wno-array-bounds)
35
36 UTS_MACHINE     := s390x
37 STACK_SIZE      := $(if $(CONFIG_KASAN),65536,16384)
38 CHECKFLAGS      += -D__s390__ -D__s390x__
39
40 export LD_BFD
41
42 mflags-$(CONFIG_MARCH_Z10)    := -march=z10
43 mflags-$(CONFIG_MARCH_Z196)   := -march=z196
44 mflags-$(CONFIG_MARCH_ZEC12)  := -march=zEC12
45 mflags-$(CONFIG_MARCH_Z13)    := -march=z13
46 mflags-$(CONFIG_MARCH_Z14)    := -march=z14
47 mflags-$(CONFIG_MARCH_Z15)    := -march=z15
48 mflags-$(CONFIG_MARCH_Z16)    := -march=z16
49
50 export CC_FLAGS_MARCH := $(mflags-y)
51
52 aflags-y += $(mflags-y)
53 cflags-y += $(mflags-y)
54
55 cflags-$(CONFIG_MARCH_Z10_TUNE)         += -mtune=z10
56 cflags-$(CONFIG_MARCH_Z196_TUNE)        += -mtune=z196
57 cflags-$(CONFIG_MARCH_ZEC12_TUNE)       += -mtune=zEC12
58 cflags-$(CONFIG_MARCH_Z13_TUNE)         += -mtune=z13
59 cflags-$(CONFIG_MARCH_Z14_TUNE)         += -mtune=z14
60 cflags-$(CONFIG_MARCH_Z15_TUNE)         += -mtune=z15
61 cflags-$(CONFIG_MARCH_Z16_TUNE)         += -mtune=z16
62
63 cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include
64
65 #
66 # Prevent tail-call optimizations, to get clearer backtraces:
67 #
68 cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
69
70 KBUILD_AFLAGS_DECOMPRESSOR += $(aflags-y)
71 KBUILD_CFLAGS_DECOMPRESSOR += $(cflags-y)
72
73 ifneq ($(call cc-option,-mstack-size=8192 -mstack-guard=128),)
74   CC_FLAGS_CHECK_STACK := -mstack-size=$(STACK_SIZE)
75   ifeq ($(call cc-option,-mstack-size=8192),)
76     CC_FLAGS_CHECK_STACK += -mstack-guard=$(CONFIG_STACK_GUARD)
77   endif
78   export CC_FLAGS_CHECK_STACK
79   cflags-$(CONFIG_CHECK_STACK) += $(CC_FLAGS_CHECK_STACK)
80 endif
81
82 ifdef CONFIG_EXPOLINE
83   ifdef CONFIG_EXPOLINE_EXTERN
84     KBUILD_LDFLAGS_MODULE += arch/s390/lib/expoline/expoline.o
85     CC_FLAGS_EXPOLINE := -mindirect-branch=thunk-extern
86     CC_FLAGS_EXPOLINE += -mfunction-return=thunk-extern
87   else
88     CC_FLAGS_EXPOLINE := -mindirect-branch=thunk
89     CC_FLAGS_EXPOLINE += -mfunction-return=thunk
90   endif
91   CC_FLAGS_EXPOLINE += -mindirect-branch-table
92   export CC_FLAGS_EXPOLINE
93   cflags-y += $(CC_FLAGS_EXPOLINE) -DCC_USING_EXPOLINE
94   aflags-y += -DCC_USING_EXPOLINE
95 endif
96
97 ifdef CONFIG_FUNCTION_TRACER
98   ifeq ($(call cc-option,-mfentry -mnop-mcount),)
99     # make use of hotpatch feature if the compiler supports it
100     cc_hotpatch := -mhotpatch=0,3
101     ifneq ($(call cc-option,$(cc_hotpatch)),)
102       CC_FLAGS_FTRACE := $(cc_hotpatch)
103       KBUILD_AFLAGS     += -DCC_USING_HOTPATCH
104       KBUILD_CFLAGS     += -DCC_USING_HOTPATCH
105     endif
106   endif
107 endif
108
109 # Test CFI features of binutils
110 cfi := $(call as-instr,.cfi_startproc\n.cfi_val_offset 15$(comma)-160\n.cfi_endproc,-DCONFIG_AS_CFI_VAL_OFFSET=1)
111
112 KBUILD_CFLAGS   += -mpacked-stack -mbackchain -msoft-float $(cflags-y)
113 KBUILD_CFLAGS   += -pipe -Wno-sign-compare
114 KBUILD_CFLAGS   += -fno-asynchronous-unwind-tables $(cfi)
115 KBUILD_AFLAGS   += $(aflags-y) $(cfi)
116 export KBUILD_AFLAGS_DECOMPRESSOR
117 export KBUILD_CFLAGS_DECOMPRESSOR
118
119 OBJCOPYFLAGS    := -O binary
120
121 libs-y          += arch/s390/lib/
122
123 boot            := arch/s390/boot
124 syscalls        := arch/s390/kernel/syscalls
125 tools           := arch/s390/tools
126
127 all: bzImage
128
129 #KBUILD_IMAGE is necessary for packaging targets like rpm-pkg, deb-pkg...
130 KBUILD_IMAGE    := $(boot)/bzImage
131
132 install:
133         $(call cmd,install)
134
135 bzImage: vmlinux
136         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
137
138 zfcpdump:
139         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
140
141 vdso_install:
142         $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
143
144 archheaders:
145         $(Q)$(MAKE) $(build)=$(syscalls) uapi
146
147 archprepare:
148         $(Q)$(MAKE) $(build)=$(syscalls) kapi
149         $(Q)$(MAKE) $(build)=$(tools) kapi
150 ifeq ($(KBUILD_EXTMOD),)
151 # We need to generate vdso-offsets.h before compiling certain files in kernel/.
152 # In order to do that, we should use the archprepare target, but we can't since
153 # asm-offsets.h is included in some files used to generate vdso-offsets.h, and
154 # asm-offsets.h is built in prepare0, for which archprepare is a dependency.
155 # Therefore we need to generate the header after prepare0 has been made, hence
156 # this hack.
157 prepare: vdso_prepare
158 vdso_prepare: prepare0
159         $(Q)$(MAKE) $(build)=arch/s390/kernel/vdso64 include/generated/vdso64-offsets.h
160         $(if $(CONFIG_COMPAT),$(Q)$(MAKE) \
161                 $(build)=arch/s390/kernel/vdso32 include/generated/vdso32-offsets.h)
162
163 ifdef CONFIG_EXPOLINE_EXTERN
164 modules_prepare: expoline_prepare
165 expoline_prepare: scripts
166         $(Q)$(MAKE) $(build)=arch/s390/lib/expoline arch/s390/lib/expoline/expoline.o
167 endif
168 endif
169
170 # Don't use tabs in echo arguments
171 define archhelp
172   echo  '* bzImage         - Kernel image for IPL ($(boot)/bzImage)'
173   echo  '  install         - Install kernel using'
174   echo  '                    (your) ~/bin/$(INSTALLKERNEL) or'
175   echo  '                    (distribution) /sbin/$(INSTALLKERNEL) or'
176   echo  '                    install to $$(INSTALL_PATH)'
177 endef