1 # SPDX-License-Identifier: GPL-2.0 <<
2 # 1 #
3 # s390/Makefile !! 2 # alpha/Makefile
4 # 3 #
5 # This file is included by the global makefile !! 4 # This file is subject to the terms and conditions of the GNU General Public
6 # architecture-specific flags and dependencies !! 5 # License. See the file "COPYING" in the main directory of this archive
>> 6 # for more details.
7 # 7 #
8 # Copyright (C) 1994 by Linus Torvalds 8 # Copyright (C) 1994 by Linus Torvalds
9 # 9 #
10 10
11 LD_BFD := elf64-s390 !! 11 NM := $(NM) -B
12 KBUILD_LDFLAGS := -m elf64_s390 !! 12
13 KBUILD_AFLAGS_MODULE += -fPIC !! 13 LDFLAGS_vmlinux := -static -N #-relax
14 KBUILD_CFLAGS_MODULE += -fPIC !! 14 cflags-y := -pipe -mno-fp-regs -ffixed-8
15 KBUILD_AFLAGS += -m64 !! 15
16 KBUILD_CFLAGS += -m64 !! 16 # Determine if we can use the BWX instructions with GAS.
17 KBUILD_CFLAGS += -fPIC !! 17 old_gas := $(shell if $(AS) --version 2>&1 | grep 'version 2.7' > /dev/null; then echo y; else echo n; fi)
18 LDFLAGS_vmlinux := -no-pie --emit-relocs --dis !! 18
19 extra_tools := relocs !! 19 ifeq ($(old_gas),y)
20 aflags_dwarf := -Wa,-gdwarf-2 !! 20 $(error The assembler '$(AS)' does not support the BWX instruction)
21 KBUILD_AFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) - <<
22 ifndef CONFIG_AS_IS_LLVM <<
23 KBUILD_AFLAGS_DECOMPRESSOR += $(if $(CONFIG_DE <<
24 endif 21 endif
25 KBUILD_CFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) - <<
26 KBUILD_CFLAGS_DECOMPRESSOR += -DDISABLE_BRANCH <<
27 KBUILD_CFLAGS_DECOMPRESSOR += -D__DECOMPRESSOR <<
28 KBUILD_CFLAGS_DECOMPRESSOR += -fno-delete-null <<
29 KBUILD_CFLAGS_DECOMPRESSOR += -fno-asynchronou <<
30 KBUILD_CFLAGS_DECOMPRESSOR += -ffreestanding <<
31 KBUILD_CFLAGS_DECOMPRESSOR += -fno-stack-prote <<
32 KBUILD_CFLAGS_DECOMPRESSOR += -fPIE <<
33 KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-disabl <<
34 KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DE <<
35 KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DE <<
36 KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_CC <<
37 <<
38 UTS_MACHINE := s390x <<
39 STACK_SIZE := $(if $(CONFIG_KASAN),65536, <<
40 CHECKFLAGS += -D__s390__ -D__s390x__ <<
41 <<
42 export LD_BFD <<
43 <<
44 mflags-$(CONFIG_MARCH_Z10) := -march=z10 <<
45 mflags-$(CONFIG_MARCH_Z196) := -march=z196 <<
46 mflags-$(CONFIG_MARCH_ZEC12) := -march=zEC12 <<
47 mflags-$(CONFIG_MARCH_Z13) := -march=z13 <<
48 mflags-$(CONFIG_MARCH_Z14) := -march=z14 <<
49 mflags-$(CONFIG_MARCH_Z15) := -march=z15 <<
50 mflags-$(CONFIG_MARCH_Z16) := -march=z16 <<
51 <<
52 export CC_FLAGS_MARCH := $(mflags-y) <<
53 <<
54 aflags-y += $(mflags-y) <<
55 cflags-y += $(mflags-y) <<
56 <<
57 cflags-$(CONFIG_MARCH_Z10_TUNE) += -mt <<
58 cflags-$(CONFIG_MARCH_Z196_TUNE) += -mt <<
59 cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mt <<
60 cflags-$(CONFIG_MARCH_Z13_TUNE) += -mt <<
61 cflags-$(CONFIG_MARCH_Z14_TUNE) += -mt <<
62 cflags-$(CONFIG_MARCH_Z15_TUNE) += -mt <<
63 cflags-$(CONFIG_MARCH_Z16_TUNE) += -mt <<
64 22
65 cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/incl !! 23 # Determine if GCC understands the -mcpu= option.
>> 24 have_mcpu := $(shell if $(CC) -mcpu=ev5 -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi)
66 25
67 # !! 26 have_mcpu_pca56 := $(shell if $(CC) -mcpu=pca56 -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi)
68 # Prevent tail-call optimizations, to get clea <<
69 # <<
70 cflags-$(CONFIG_FRAME_POINTER) += -fno-optimiz <<
71 27
72 KBUILD_AFLAGS_DECOMPRESSOR += $(aflags-y) !! 28 have_mcpu_ev6 := $(shell if $(CC) -mcpu=ev6 -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi)
73 KBUILD_CFLAGS_DECOMPRESSOR += $(cflags-y) <<
74 29
75 ifneq ($(call cc-option,-mstack-size=8192 -mst !! 30 have_mcpu_ev67 := $(shell if $(CC) -mcpu=ev67 -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi)
76 CC_FLAGS_CHECK_STACK := -mstack-size=$(STACK <<
77 ifeq ($(call cc-option,-mstack-size=8192),) <<
78 CC_FLAGS_CHECK_STACK += -mstack-guard=$(CO <<
79 endif <<
80 export CC_FLAGS_CHECK_STACK <<
81 cflags-$(CONFIG_CHECK_STACK) += $(CC_FLAGS_C <<
82 endif <<
83 31
84 ifdef CONFIG_EXPOLINE !! 32 have_msmall_data := $(shell if $(CC) -msmall-data -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi)
85 ifdef CONFIG_EXPOLINE_EXTERN !! 33
86 CC_FLAGS_EXPOLINE := -mindirect-branch=thu !! 34 cflags-$(have_msmall_data) += -msmall-data
87 CC_FLAGS_EXPOLINE += -mfunction-return=thu <<
88 else <<
89 CC_FLAGS_EXPOLINE := -mindirect-branch=thu <<
90 CC_FLAGS_EXPOLINE += -mfunction-return=thu <<
91 endif <<
92 CC_FLAGS_EXPOLINE += -mindirect-branch-table <<
93 export CC_FLAGS_EXPOLINE <<
94 cflags-y += $(CC_FLAGS_EXPOLINE) -DCC_USING_ <<
95 aflags-y += -DCC_USING_EXPOLINE <<
96 endif <<
97 35
98 ifdef CONFIG_FUNCTION_TRACER !! 36 # Turn on the proper cpu optimizations.
99 ifeq ($(call cc-option,-mfentry -mnop-mcount !! 37 ifeq ($(have_mcpu),y)
100 # make use of hotpatch feature if the comp !! 38 mcpu_done := n
101 cc_hotpatch := -mhotpatch=0,3 !! 39 # If GENERIC, make sure to turn off any instruction set extensions that
102 ifneq ($(call cc-option,$(cc_hotpatch)),) !! 40 # the host compiler might have on by default. Given that EV4 and EV5
103 CC_FLAGS_FTRACE := $(cc_hotpatch) !! 41 # have the same instruction set, prefer EV5 because an EV5 schedule is
104 KBUILD_AFLAGS += -DCC_USING_HOTPATCH !! 42 # more likely to keep an EV4 processor busy than vice-versa.
105 KBUILD_CFLAGS += -DCC_USING_HOTPATCH !! 43 ifeq ($(CONFIG_ALPHA_GENERIC),y)
>> 44 mcpu := ev5
>> 45 mcpu_done := y
>> 46 endif
>> 47 ifeq ($(mcpu_done)$(CONFIG_ALPHA_SX164)$(have_mcpu_pca56),nyy)
>> 48 mcpu := pca56
>> 49 mcpu_done := y
>> 50 endif
>> 51 ifeq ($(mcpu_done)$(CONFIG_ALPHA_POLARIS)$(have_mcpu_pca56),nyy)
>> 52 mcpu := pca56
>> 53 mcpu_done := y
>> 54 endif
>> 55 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV4),ny)
>> 56 mcpu := ev4
>> 57 mcpu_done := y
>> 58 endif
>> 59 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV56),ny)
>> 60 mcpu := ev56
>> 61 mcpu_done := y
>> 62 endif
>> 63 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV5),ny)
>> 64 mcpu := ev5
>> 65 mcpu_done := y
>> 66 endif
>> 67 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV67)$(have_mcpu_ev67),nyy)
>> 68 mcpu := ev67
>> 69 mcpu_done := y
>> 70 endif
>> 71 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV6),ny)
>> 72 ifeq ($(have_mcpu_ev6),y)
>> 73 mcpu := ev6
>> 74 else
>> 75 ifeq ($(have_mcpu_pca56),y)
>> 76 mcpu := pca56
>> 77 else
>> 78 mcpu=ev56
>> 79 endif
106 endif 80 endif
>> 81 mcpu_done := y
107 endif 82 endif
>> 83 cflags-$(mcpu_done) += -mcpu=$(mcpu)
108 endif 84 endif
109 85
110 # Test CFI features of binutils <<
111 cfi := $(call as-instr,.cfi_startproc\n.cfi_va <<
112 86
113 KBUILD_CFLAGS += -mpacked-stack -mbackchain !! 87 # For TSUNAMI, we must have the assembler not emulate our instructions.
114 KBUILD_CFLAGS += -pipe -Wno-sign-compare !! 88 # The same is true for IRONGATE, POLARIS, PYXIS.
115 KBUILD_CFLAGS += -fno-asynchronous-unwind-ta !! 89 # BWX is most important, but we don't really want any emulation ever.
116 KBUILD_AFLAGS += $(aflags-y) $(cfi) !! 90 CFLAGS += $(cflags-y) -Wa,-mev6
117 export KBUILD_AFLAGS_DECOMPRESSOR <<
118 export KBUILD_CFLAGS_DECOMPRESSOR <<
119 <<
120 OBJCOPYFLAGS := -O binary <<
121 <<
122 libs-y += arch/s390/lib/ <<
123 <<
124 boot := arch/s390/boot <<
125 syscalls := arch/s390/kernel/syscalls <<
126 tools := arch/s390/tools <<
127 <<
128 all: bzImage <<
129 <<
130 #KBUILD_IMAGE is necessary for packaging targe <<
131 KBUILD_IMAGE := $(boot)/bzImage <<
132 <<
133 install: <<
134 $(call cmd,install) <<
135 <<
136 bzImage: vmlinux <<
137 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$ <<
138 <<
139 zfcpdump: <<
140 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$ <<
141 <<
142 archheaders: <<
143 $(Q)$(MAKE) $(build)=$(syscalls) uapi <<
144 <<
145 archprepare: <<
146 $(Q)$(MAKE) $(build)=$(syscalls) kapi <<
147 $(Q)$(MAKE) $(build)=$(tools) kapi $(e <<
148 ifeq ($(KBUILD_EXTMOD),) <<
149 # We need to generate vdso-offsets.h before co <<
150 # In order to do that, we should use the archp <<
151 # asm-offsets.h is included in some files used <<
152 # asm-offsets.h is built in prepare0, for whic <<
153 # Therefore we need to generate the header aft <<
154 # this hack. <<
155 prepare: vdso_prepare <<
156 vdso_prepare: prepare0 <<
157 $(Q)$(MAKE) $(build)=arch/s390/kernel/ <<
158 $(if $(CONFIG_COMPAT),$(Q)$(MAKE) \ <<
159 $(build)=arch/s390/kernel/vdso <<
160 91
161 vdso-install-y += arch/s390/k !! 92 head-y := arch/alpha/kernel/head.o
162 vdso-install-$(CONFIG_COMPAT) += arch/s390/k <<
163 93
164 endif !! 94 core-y += arch/alpha/kernel/ arch/alpha/mm/
>> 95 core-$(CONFIG_MATHEMU) += arch/alpha/math-emu/
>> 96 drivers-$(CONFIG_OPROFILE) += arch/alpha/oprofile/
>> 97 libs-y += arch/alpha/lib/
>> 98
>> 99 # export what is needed by arch/alpha/boot/Makefile
>> 100 LIBS_Y := $(patsubst %/, %/lib.a, $(libs-y))
>> 101 export LIBS_Y
>> 102
>> 103 boot := arch/alpha/boot
>> 104
>> 105 #Default target when executing make with no arguments
>> 106 all boot: $(boot)/vmlinux.gz
>> 107
>> 108 $(boot)/vmlinux.gz: vmlinux
>> 109 $(Q)$(MAKE) -f scripts/Makefile.build obj=$(boot) $@
>> 110
>> 111 bootimage bootpfile bootpzfile: vmlinux
>> 112 $(Q)$(MAKE) -f scripts/Makefile.build obj=$(boot) $(boot)/$@
>> 113
>> 114
>> 115 prepare: include/asm-$(ARCH)/asm_offsets.h
>> 116
>> 117 arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
>> 118 include/config/MARKER
>> 119
>> 120 include/asm-$(ARCH)/asm_offsets.h: arch/$(ARCH)/kernel/asm-offsets.s
>> 121 $(call filechk,gen-asm-offsets)
>> 122
>> 123 archclean:
>> 124 $(Q)$(MAKE) -f scripts/Makefile.clean obj=$(boot)
>> 125
>> 126 CLEAN_FILES += include/asm-$(ARCH)/asm_offsets.h
165 127
166 # Don't use tabs in echo arguments <<
167 define archhelp 128 define archhelp
168 echo '* bzImage - Kernel image for !! 129 echo '* boot - Compressed kernel image (arch/alpha/boot/vmlinux.gz)'
169 echo ' install - Install kernel us !! 130 echo ' bootimage - SRM bootable image (arch/alpha/boot/bootimage)'
170 echo ' (your) ~/bin/$(IN !! 131 echo ' bootpfile - BOOTP bootable image (arch/alpha/boot/bootpfile)'
171 echo ' (distribution) /s !! 132 echo ' bootpzfile - compressed kernel BOOTP image (arch/alpha/boot/bootpzfile)'
172 echo ' install to $$(INS <<
173 endef 133 endef
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