blob: f5f63b715d91bb8c5e563da6ea61db16b869dcb5 [file] [log] [blame]
Catalin Marinas8c2c3df2012-04-20 14:45:54 +01001config ARM64
2 def_bool y
3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
Will Deacon5686b062013-10-09 15:54:27 +01004 select ARCH_USE_CMPXCHG_LOCKREF
Lorenzo Pieralisi1f850082013-09-04 10:55:17 +01005 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
Arnd Bergmann91701002013-02-21 11:42:57 +01006 select ARCH_WANT_OPTIONAL_GPIOLIB
Will Deacon6212a512012-11-07 14:16:28 +00007 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
Catalin Marinasb6f35982013-01-29 18:25:41 +00008 select ARCH_WANT_FRAME_POINTERS
Catalin Marinas25c92a32012-12-18 15:26:13 +00009 select ARM_AMBA
Mark Rutland1aee5d72012-11-20 10:06:00 +000010 select ARM_ARCH_TIMER
Catalin Marinasc4188ed2013-01-14 12:39:31 +000011 select ARM_GIC
Will Deaconadace892013-05-08 17:29:24 +010012 select BUILDTIME_EXTABLE_SORT
Catalin Marinasdb2789b2012-12-18 15:27:25 +000013 select CLONE_BACKWARDS
Deepak Saxena7ca2ef32012-09-22 10:33:36 -070014 select COMMON_CLK
Lorenzo Pieralisi166936b2013-11-07 18:37:14 +000015 select CPU_PM if (SUSPEND || CPU_IDLE)
Will Deacon7bc13fd2013-11-06 19:32:13 +000016 select DCACHE_WORD_ACCESS
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010017 select GENERIC_CLOCKEVENTS
Lorenzo Pieralisi1f850082013-09-04 10:55:17 +010018 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
Ard Biesheuvel3be1a5c2014-03-04 01:10:04 +000019 select GENERIC_CPU_AUTOPROBE
Mark Salterbf4b5582014-04-07 15:39:52 -070020 select GENERIC_EARLY_IOREMAP
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010021 select GENERIC_IOMAP
22 select GENERIC_IRQ_PROBE
23 select GENERIC_IRQ_SHOW
Stephen Boyd65cd4f62013-07-18 16:21:18 -070024 select GENERIC_SCHED_CLOCK
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010025 select GENERIC_SMP_IDLE_THREAD
Will Deacon12a0ef72013-11-06 17:20:22 +000026 select GENERIC_STRNCPY_FROM_USER
27 select GENERIC_STRNLEN_USER
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010028 select GENERIC_TIME_VSYSCALL
29 select HARDIRQS_SW_RESEND
Jiang Liu9732caf2014-01-07 22:17:13 +080030 select HAVE_ARCH_JUMP_LABEL
Vijaya Kumar K95292472014-01-28 11:20:22 +000031 select HAVE_ARCH_KGDB
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010032 select HAVE_ARCH_TRACEHOOK
Catalin Marinas9b2a60c2012-10-08 16:28:13 -070033 select HAVE_DEBUG_BUGVERBOSE
Catalin Marinasb69ec422012-10-08 16:28:11 -070034 select HAVE_DEBUG_KMEMLEAK
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010035 select HAVE_DMA_API_DEBUG
36 select HAVE_DMA_ATTRS
Laura Abbott6ac21042013-12-12 19:28:33 +000037 select HAVE_DMA_CONTIGUOUS
Will Deacon50afc332013-12-16 17:50:08 +000038 select HAVE_EFFICIENT_UNALIGNED_ACCESS
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010039 select HAVE_GENERIC_DMA_COHERENT
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010040 select HAVE_HW_BREAKPOINT if PERF_EVENTS
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010041 select HAVE_MEMBLOCK
Mark Rutland55834a72014-02-07 17:12:45 +000042 select HAVE_PATA_PLATFORM
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010043 select HAVE_PERF_EVENTS
Jean Pihet2ee0d7f2014-02-03 19:18:27 +010044 select HAVE_PERF_REGS
45 select HAVE_PERF_USER_STACK_DUMP
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010046 select IRQ_DOMAIN
Catalin Marinasfea2aca2012-10-16 11:26:57 +010047 select MODULES_USE_ELF_RELA
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010048 select NO_BOOTMEM
49 select OF
50 select OF_EARLY_FLATTREE
Marek Szyprowski9bf14b72014-02-28 14:42:55 +010051 select OF_RESERVED_MEM
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010052 select PERF_USE_VMALLOC
Catalin Marinasaa1e8ec2013-02-28 18:14:37 +000053 select POWER_RESET
54 select POWER_SUPPLY
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010055 select RTC_LIB
56 select SPARSE_IRQ
Catalin Marinas7ac57a82012-10-08 16:28:16 -070057 select SYSCTL_EXCEPTION_TRACE
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010058 help
59 ARM 64-bit (AArch64) Linux support.
60
61config 64BIT
62 def_bool y
63
64config ARCH_PHYS_ADDR_T_64BIT
65 def_bool y
66
67config MMU
68 def_bool y
69
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -070070config NO_IOPORT_MAP
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010071 def_bool y
72
73config STACKTRACE_SUPPORT
74 def_bool y
75
76config LOCKDEP_SUPPORT
77 def_bool y
78
79config TRACE_IRQFLAGS_SUPPORT
80 def_bool y
81
Will Deaconc209f792014-03-14 17:47:05 +000082config RWSEM_XCHGADD_ALGORITHM
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010083 def_bool y
84
85config GENERIC_HWEIGHT
86 def_bool y
87
88config GENERIC_CSUM
89 def_bool y
90
91config GENERIC_CALIBRATE_DELAY
92 def_bool y
93
Catalin Marinas19e76402014-02-27 12:09:22 +000094config ZONE_DMA
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010095 def_bool y
96
97config ARCH_DMA_ADDR_T_64BIT
98 def_bool y
99
100config NEED_DMA_MAP_STATE
101 def_bool y
102
103config NEED_SG_DMA_LENGTH
104 def_bool y
105
106config SWIOTLB
107 def_bool y
108
109config IOMMU_HELPER
110 def_bool SWIOTLB
111
Ard Biesheuvel4cfb3612013-07-09 14:18:12 +0100112config KERNEL_MODE_NEON
113 def_bool y
114
Rob Herring92cc15f2014-04-18 17:19:59 -0500115config FIX_EARLYCON_MEM
116 def_bool y
117
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100118source "init/Kconfig"
119
120source "kernel/Kconfig.freezer"
121
Catalin Marinas1ae90e72012-09-05 17:47:44 +0100122menu "Platform selection"
123
124config ARCH_VEXPRESS
125 bool "ARMv8 software model (Versatile Express)"
126 select ARCH_REQUIRE_GPIOLIB
127 select COMMON_CLK_VERSATILE
Catalin Marinasaa1e8ec2013-02-28 18:14:37 +0000128 select POWER_RESET_VEXPRESS
Catalin Marinas1ae90e72012-09-05 17:47:44 +0100129 select VEXPRESS_CONFIG
130 help
131 This enables support for the ARMv8 software model (Versatile
132 Express).
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100133
Vinayak Kale15942852013-04-24 10:06:57 +0100134config ARCH_XGENE
135 bool "AppliedMicro X-Gene SOC Family"
136 help
137 This enables support for AppliedMicro X-Gene SOC Family
138
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100139endmenu
140
141menu "Bus support"
142
143config ARM_AMBA
144 bool
145
146endmenu
147
148menu "Kernel Features"
149
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100150config ARM64_64K_PAGES
151 bool "Enable 64KB pages support"
152 help
153 This feature enables 64KB pages support (4KB by default)
154 allowing only two levels of page tables and faster TLB
155 look-up. AArch32 emulation is not available when this feature
156 is enabled.
157
Will Deacona8720132013-10-11 14:52:19 +0100158config CPU_BIG_ENDIAN
159 bool "Build big-endian kernel"
160 help
161 Say Y if you plan on running a kernel in big-endian mode.
162
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100163config SMP
164 bool "Symmetric Multi-Processing"
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100165 help
166 This enables support for systems with more than one CPU. If
167 you say N here, the kernel will run on single and
168 multiprocessor machines, but will use only one CPU of a
169 multiprocessor machine. If you say Y here, the kernel will run
170 on many, but not all, single processor machines. On a single
171 processor machine, the kernel will run faster if you say N
172 here.
173
174 If you don't know what to do here, say N.
175
Mark Brownf6e763b2014-03-04 07:51:17 +0000176config SCHED_MC
177 bool "Multi-core scheduler support"
178 depends on SMP
179 help
180 Multi-core scheduler support improves the CPU scheduler's decision
181 making when dealing with multi-core CPU chips at a cost of slightly
182 increased overhead in some places. If unsure say N here.
183
184config SCHED_SMT
185 bool "SMT scheduler support"
186 depends on SMP
187 help
188 Improves the CPU scheduler's decision making when dealing with
189 MultiThreading at a cost of slightly increased overhead in some
190 places. If unsure say N here.
191
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100192config NR_CPUS
193 int "Maximum number of CPUs (2-32)"
194 range 2 32
195 depends on SMP
Vinayak Kale15942852013-04-24 10:06:57 +0100196 # These have to remain sorted largest to smallest
Rob Herring62aceb82013-11-22 21:07:31 +0000197 default "8"
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100198
Mark Rutland9327e2c2013-10-24 20:30:18 +0100199config HOTPLUG_CPU
200 bool "Support for hot-pluggable CPUs"
201 depends on SMP
202 help
203 Say Y here to experiment with turning CPUs off and on. CPUs
204 can be controlled through /sys/devices/system/cpu.
205
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100206source kernel/Kconfig.preempt
207
208config HZ
209 int
210 default 100
211
212config ARCH_HAS_HOLES_MEMORYMODEL
213 def_bool y if SPARSEMEM
214
215config ARCH_SPARSEMEM_ENABLE
216 def_bool y
217 select SPARSEMEM_VMEMMAP_ENABLE
218
219config ARCH_SPARSEMEM_DEFAULT
220 def_bool ARCH_SPARSEMEM_ENABLE
221
222config ARCH_SELECT_MEMORY_MODEL
223 def_bool ARCH_SPARSEMEM_ENABLE
224
225config HAVE_ARCH_PFN_VALID
226 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
227
228config HW_PERF_EVENTS
229 bool "Enable hardware performance counter support for perf events"
230 depends on PERF_EVENTS
231 default y
232 help
233 Enable hardware performance counter support for perf events. If
234 disabled, perf events will use software events only.
235
Steve Capper084bd292013-04-10 13:48:00 +0100236config SYS_SUPPORTS_HUGETLBFS
237 def_bool y
238
239config ARCH_WANT_GENERAL_HUGETLB
240 def_bool y
241
242config ARCH_WANT_HUGE_PMD_SHARE
243 def_bool y if !ARM64_64K_PAGES
244
Steve Capperaf074842013-04-19 16:23:57 +0100245config HAVE_ARCH_TRANSPARENT_HUGEPAGE
246 def_bool y
247
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100248source "mm/Kconfig"
249
Stefano Stabelliniaa42aa12013-06-03 17:05:43 +0000250config XEN_DOM0
251 def_bool y
252 depends on XEN
253
254config XEN
255 bool "Xen guest support on ARM64 (EXPERIMENTAL)"
256 depends on ARM64 && OF
Stefano Stabellini83862cc2013-10-10 13:40:44 +0000257 select SWIOTLB_XEN
Stefano Stabelliniaa42aa12013-06-03 17:05:43 +0000258 help
259 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
260
Steve Capperd03bb142013-04-25 15:19:21 +0100261config FORCE_MAX_ZONEORDER
262 int
263 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
264 default "11"
265
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100266endmenu
267
268menu "Boot options"
269
270config CMDLINE
271 string "Default kernel command string"
272 default ""
273 help
274 Provide a set of default command-line options at build time by
275 entering them here. As a minimum, you should specify the the
276 root device (e.g. root=/dev/nfs).
277
278config CMDLINE_FORCE
279 bool "Always use the default kernel command string"
280 help
281 Always use the default kernel command string, even if the boot
282 loader passes other arguments to the kernel.
283 This is useful if you cannot or don't want to change the
284 command-line options your boot loader passes to the kernel.
285
286endmenu
287
288menu "Userspace binary formats"
289
290source "fs/Kconfig.binfmt"
291
292config COMPAT
293 bool "Kernel support for 32-bit EL0"
294 depends on !ARM64_64K_PAGES
295 select COMPAT_BINFMT_ELF
Catalin Marinasaf1839e2012-10-08 16:28:08 -0700296 select HAVE_UID16
Al Viro84b9e9b2012-12-25 16:29:11 -0500297 select OLD_SIGSUSPEND3
Al Viro51682032012-12-25 19:31:29 -0500298 select COMPAT_OLD_SIGACTION
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100299 help
300 This option enables support for a 32-bit EL0 running under a 64-bit
301 kernel at EL1. AArch32-specific components such as system calls,
302 the user helper functions, VFP support and the ptrace interface are
303 handled appropriately by the kernel.
304
305 If you want to execute 32-bit userspace applications, say Y.
306
307config SYSVIPC_COMPAT
308 def_bool y
309 depends on COMPAT && SYSVIPC
310
311endmenu
312
Lorenzo Pieralisi166936b2013-11-07 18:37:14 +0000313menu "Power management options"
314
315source "kernel/power/Kconfig"
316
317config ARCH_SUSPEND_POSSIBLE
318 def_bool y
319
320config ARM64_CPU_SUSPEND
321 def_bool PM_SLEEP
322
323endmenu
324
Lorenzo Pieralisi13072202013-07-17 14:54:21 +0100325menu "CPU Power Management"
326
327source "drivers/cpuidle/Kconfig"
328
Rob Herring52e7e812014-02-24 11:27:57 +0900329source "drivers/cpufreq/Kconfig"
330
331endmenu
332
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100333source "net/Kconfig"
334
335source "drivers/Kconfig"
336
337source "fs/Kconfig"
338
Marc Zyngierc3eb5b12013-07-04 13:34:32 +0100339source "arch/arm64/kvm/Kconfig"
340
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100341source "arch/arm64/Kconfig.debug"
342
343source "security/Kconfig"
344
345source "crypto/Kconfig"
346
347source "lib/Kconfig"