arm64: dts: fix #address-cells for foundation-v8
[linux-2.6-block.git] / arch / arm64 / Kconfig
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1config ARM64
2 def_bool y
3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
9170100e 4 select ARCH_WANT_OPTIONAL_GPIOLIB
6212a512 5 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
b6f35981 6 select ARCH_WANT_FRAME_POINTERS
25c92a37 7 select ARM_AMBA
1aee5d7a 8 select ARM_ARCH_TIMER
c4188edc 9 select ARM_GIC
db2789b5 10 select CLONE_BACKWARDS
7ca2ef33 11 select COMMON_CLK
8c2c3df3 12 select GENERIC_CLOCKEVENTS
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13 select GENERIC_IOMAP
14 select GENERIC_IRQ_PROBE
15 select GENERIC_IRQ_SHOW
16 select GENERIC_SMP_IDLE_THREAD
17 select GENERIC_TIME_VSYSCALL
18 select HARDIRQS_SW_RESEND
19 select HAVE_ARCH_TRACEHOOK
9b2a60c4 20 select HAVE_DEBUG_BUGVERBOSE
b69ec42b 21 select HAVE_DEBUG_KMEMLEAK
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22 select HAVE_DMA_API_DEBUG
23 select HAVE_DMA_ATTRS
24 select HAVE_GENERIC_DMA_COHERENT
25 select HAVE_GENERIC_HARDIRQS
26 select HAVE_HW_BREAKPOINT if PERF_EVENTS
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27 select HAVE_MEMBLOCK
28 select HAVE_PERF_EVENTS
8c2c3df3 29 select IRQ_DOMAIN
fea2acaa 30 select MODULES_USE_ELF_RELA
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31 select NO_BOOTMEM
32 select OF
33 select OF_EARLY_FLATTREE
34 select PERF_USE_VMALLOC
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35 select POWER_RESET
36 select POWER_SUPPLY
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37 select RTC_LIB
38 select SPARSE_IRQ
7ac57a89 39 select SYSCTL_EXCEPTION_TRACE
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40 help
41 ARM 64-bit (AArch64) Linux support.
42
43config 64BIT
44 def_bool y
45
46config ARCH_PHYS_ADDR_T_64BIT
47 def_bool y
48
49config MMU
50 def_bool y
51
52config NO_IOPORT
53 def_bool y
54
55config STACKTRACE_SUPPORT
56 def_bool y
57
58config LOCKDEP_SUPPORT
59 def_bool y
60
61config TRACE_IRQFLAGS_SUPPORT
62 def_bool y
63
64config GENERIC_LOCKBREAK
65 def_bool y
66 depends on SMP && PREEMPT
67
68config RWSEM_GENERIC_SPINLOCK
69 def_bool y
70
71config GENERIC_HWEIGHT
72 def_bool y
73
74config GENERIC_CSUM
75 def_bool y
76
77config GENERIC_CALIBRATE_DELAY
78 def_bool y
79
80config ZONE_DMA32
81 def_bool y
82
83config ARCH_DMA_ADDR_T_64BIT
84 def_bool y
85
86config NEED_DMA_MAP_STATE
87 def_bool y
88
89config NEED_SG_DMA_LENGTH
90 def_bool y
91
92config SWIOTLB
93 def_bool y
94
95config IOMMU_HELPER
96 def_bool SWIOTLB
97
25c92a37 98config GENERIC_GPIO
9170100e 99 bool
25c92a37 100
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101source "init/Kconfig"
102
103source "kernel/Kconfig.freezer"
104
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105menu "Platform selection"
106
107config ARCH_VEXPRESS
108 bool "ARMv8 software model (Versatile Express)"
109 select ARCH_REQUIRE_GPIOLIB
110 select COMMON_CLK_VERSATILE
aa1e8ec1 111 select POWER_RESET_VEXPRESS
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112 select VEXPRESS_CONFIG
113 help
114 This enables support for the ARMv8 software model (Versatile
115 Express).
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116
117endmenu
118
119menu "Bus support"
120
121config ARM_AMBA
122 bool
123
124endmenu
125
126menu "Kernel Features"
127
128source "kernel/time/Kconfig"
129
130config ARM64_64K_PAGES
131 bool "Enable 64KB pages support"
132 help
133 This feature enables 64KB pages support (4KB by default)
134 allowing only two levels of page tables and faster TLB
135 look-up. AArch32 emulation is not available when this feature
136 is enabled.
137
138config SMP
139 bool "Symmetric Multi-Processing"
140 select USE_GENERIC_SMP_HELPERS
141 help
142 This enables support for systems with more than one CPU. If
143 you say N here, the kernel will run on single and
144 multiprocessor machines, but will use only one CPU of a
145 multiprocessor machine. If you say Y here, the kernel will run
146 on many, but not all, single processor machines. On a single
147 processor machine, the kernel will run faster if you say N
148 here.
149
150 If you don't know what to do here, say N.
151
152config NR_CPUS
153 int "Maximum number of CPUs (2-32)"
154 range 2 32
155 depends on SMP
156 default "4"
157
158source kernel/Kconfig.preempt
159
160config HZ
161 int
162 default 100
163
164config ARCH_HAS_HOLES_MEMORYMODEL
165 def_bool y if SPARSEMEM
166
167config ARCH_SPARSEMEM_ENABLE
168 def_bool y
169 select SPARSEMEM_VMEMMAP_ENABLE
170
171config ARCH_SPARSEMEM_DEFAULT
172 def_bool ARCH_SPARSEMEM_ENABLE
173
174config ARCH_SELECT_MEMORY_MODEL
175 def_bool ARCH_SPARSEMEM_ENABLE
176
177config HAVE_ARCH_PFN_VALID
178 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
179
180config HW_PERF_EVENTS
181 bool "Enable hardware performance counter support for perf events"
182 depends on PERF_EVENTS
183 default y
184 help
185 Enable hardware performance counter support for perf events. If
186 disabled, perf events will use software events only.
187
188source "mm/Kconfig"
189
190endmenu
191
192menu "Boot options"
193
194config CMDLINE
195 string "Default kernel command string"
196 default ""
197 help
198 Provide a set of default command-line options at build time by
199 entering them here. As a minimum, you should specify the the
200 root device (e.g. root=/dev/nfs).
201
202config CMDLINE_FORCE
203 bool "Always use the default kernel command string"
204 help
205 Always use the default kernel command string, even if the boot
206 loader passes other arguments to the kernel.
207 This is useful if you cannot or don't want to change the
208 command-line options your boot loader passes to the kernel.
209
210endmenu
211
212menu "Userspace binary formats"
213
214source "fs/Kconfig.binfmt"
215
216config COMPAT
217 bool "Kernel support for 32-bit EL0"
218 depends on !ARM64_64K_PAGES
219 select COMPAT_BINFMT_ELF
af1839eb 220 select HAVE_UID16
84b9e9b4 221 select OLD_SIGSUSPEND3
51682036 222 select COMPAT_OLD_SIGACTION
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223 help
224 This option enables support for a 32-bit EL0 running under a 64-bit
225 kernel at EL1. AArch32-specific components such as system calls,
226 the user helper functions, VFP support and the ptrace interface are
227 handled appropriately by the kernel.
228
229 If you want to execute 32-bit userspace applications, say Y.
230
231config SYSVIPC_COMPAT
232 def_bool y
233 depends on COMPAT && SYSVIPC
234
235endmenu
236
237source "net/Kconfig"
238
239source "drivers/Kconfig"
240
241source "fs/Kconfig"
242
243source "arch/arm64/Kconfig.debug"
244
245source "security/Kconfig"
246
247source "crypto/Kconfig"
248
249source "lib/Kconfig"