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Catalin Marinas8c2c3df2012-04-20 14:45:54 +01001config ARM64
2 def_bool y
3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
Laura Abbott308c09f2014-08-08 14:23:25 -07004 select ARCH_HAS_SG_CHAIN
Lorenzo Pieralisi1f850082013-09-04 10:55:17 +01005 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
Sudeep Hollac63c8702014-05-09 10:33:01 +01006 select ARCH_USE_CMPXCHG_LOCKREF
Peter Zijlstra4badad32014-06-06 19:53:16 +02007 select ARCH_SUPPORTS_ATOMIC_RMW
Arnd Bergmann91701002013-02-21 11:42:57 +01008 select ARCH_WANT_OPTIONAL_GPIOLIB
Will Deacon6212a512012-11-07 14:16:28 +00009 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
Catalin Marinasb6f35982013-01-29 18:25:41 +000010 select ARCH_WANT_FRAME_POINTERS
Catalin Marinas25c92a32012-12-18 15:26:13 +000011 select ARM_AMBA
Mark Rutland1aee5d72012-11-20 10:06:00 +000012 select ARM_ARCH_TIMER
Catalin Marinasc4188ed2013-01-14 12:39:31 +000013 select ARM_GIC
AKASHI Takahiro875cbf32014-07-04 08:28:30 +010014 select AUDIT_ARCH_COMPAT_GENERIC
Marc Zyngier021f6532014-06-30 16:01:31 +010015 select ARM_GIC_V3
Will Deaconadace892013-05-08 17:29:24 +010016 select BUILDTIME_EXTABLE_SORT
Catalin Marinasdb2789b2012-12-18 15:27:25 +000017 select CLONE_BACKWARDS
Deepak Saxena7ca2ef32012-09-22 10:33:36 -070018 select COMMON_CLK
Lorenzo Pieralisi166936b2013-11-07 18:37:14 +000019 select CPU_PM if (SUSPEND || CPU_IDLE)
Will Deacon7bc13fd2013-11-06 19:32:13 +000020 select DCACHE_WORD_ACCESS
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010021 select GENERIC_CLOCKEVENTS
Lorenzo Pieralisi1f850082013-09-04 10:55:17 +010022 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
Ard Biesheuvel3be1a5c2014-03-04 01:10:04 +000023 select GENERIC_CPU_AUTOPROBE
Mark Salterbf4b5582014-04-07 15:39:52 -070024 select GENERIC_EARLY_IOREMAP
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010025 select GENERIC_IOMAP
26 select GENERIC_IRQ_PROBE
27 select GENERIC_IRQ_SHOW
Stephen Boyd65cd4f62013-07-18 16:21:18 -070028 select GENERIC_SCHED_CLOCK
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010029 select GENERIC_SMP_IDLE_THREAD
Will Deacon12a0ef72013-11-06 17:20:22 +000030 select GENERIC_STRNCPY_FROM_USER
31 select GENERIC_STRNLEN_USER
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010032 select GENERIC_TIME_VSYSCALL
33 select HARDIRQS_SW_RESEND
AKASHI Takahiro875cbf32014-07-04 08:28:30 +010034 select HAVE_ARCH_AUDITSYSCALL
Jiang Liu9732caf2014-01-07 22:17:13 +080035 select HAVE_ARCH_JUMP_LABEL
Vijaya Kumar K95292472014-01-28 11:20:22 +000036 select HAVE_ARCH_KGDB
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010037 select HAVE_ARCH_TRACEHOOK
AKASHI Takahiroaf64d2a2014-04-30 10:54:32 +010038 select HAVE_C_RECORDMCOUNT
Laura Abbottc0c264a2014-06-25 23:55:03 +010039 select HAVE_CC_STACKPROTECTOR
Catalin Marinas9b2a60c2012-10-08 16:28:13 -070040 select HAVE_DEBUG_BUGVERBOSE
Catalin Marinasb69ec422012-10-08 16:28:11 -070041 select HAVE_DEBUG_KMEMLEAK
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010042 select HAVE_DMA_API_DEBUG
43 select HAVE_DMA_ATTRS
Laura Abbott6ac21042013-12-12 19:28:33 +000044 select HAVE_DMA_CONTIGUOUS
AKASHI Takahirobd7d38d2014-04-30 10:54:34 +010045 select HAVE_DYNAMIC_FTRACE
Will Deacon50afc332013-12-16 17:50:08 +000046 select HAVE_EFFICIENT_UNALIGNED_ACCESS
AKASHI Takahiroaf64d2a2014-04-30 10:54:32 +010047 select HAVE_FTRACE_MCOUNT_RECORD
AKASHI Takahiro819e50e2014-04-30 18:54:33 +090048 select HAVE_FUNCTION_TRACER
49 select HAVE_FUNCTION_GRAPH_TRACER
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010050 select HAVE_GENERIC_DMA_COHERENT
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010051 select HAVE_HW_BREAKPOINT if PERF_EVENTS
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010052 select HAVE_MEMBLOCK
Mark Rutland55834a72014-02-07 17:12:45 +000053 select HAVE_PATA_PLATFORM
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010054 select HAVE_PERF_EVENTS
Jean Pihet2ee0d7f2014-02-03 19:18:27 +010055 select HAVE_PERF_REGS
56 select HAVE_PERF_USER_STACK_DUMP
AKASHI Takahiro055b1212014-04-30 10:54:36 +010057 select HAVE_SYSCALL_TRACEPOINTS
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010058 select IRQ_DOMAIN
Catalin Marinasfea2aca2012-10-16 11:26:57 +010059 select MODULES_USE_ELF_RELA
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010060 select NO_BOOTMEM
61 select OF
62 select OF_EARLY_FLATTREE
Marek Szyprowski9bf14b72014-02-28 14:42:55 +010063 select OF_RESERVED_MEM
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010064 select PERF_USE_VMALLOC
Catalin Marinasaa1e8ec2013-02-28 18:14:37 +000065 select POWER_RESET
66 select POWER_SUPPLY
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010067 select RTC_LIB
68 select SPARSE_IRQ
Catalin Marinas7ac57a82012-10-08 16:28:16 -070069 select SYSCTL_EXCEPTION_TRACE
Larry Bassel6c81fe72014-05-30 12:34:15 -070070 select HAVE_CONTEXT_TRACKING
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010071 help
72 ARM 64-bit (AArch64) Linux support.
73
74config 64BIT
75 def_bool y
76
77config ARCH_PHYS_ADDR_T_64BIT
78 def_bool y
79
80config MMU
81 def_bool y
82
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -070083config NO_IOPORT_MAP
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010084 def_bool y
85
86config STACKTRACE_SUPPORT
87 def_bool y
88
89config LOCKDEP_SUPPORT
90 def_bool y
91
92config TRACE_IRQFLAGS_SUPPORT
93 def_bool y
94
Will Deaconc209f792014-03-14 17:47:05 +000095config RWSEM_XCHGADD_ALGORITHM
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010096 def_bool y
97
98config GENERIC_HWEIGHT
99 def_bool y
100
101config GENERIC_CSUM
102 def_bool y
103
104config GENERIC_CALIBRATE_DELAY
105 def_bool y
106
Catalin Marinas19e76402014-02-27 12:09:22 +0000107config ZONE_DMA
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100108 def_bool y
109
110config ARCH_DMA_ADDR_T_64BIT
111 def_bool y
112
113config NEED_DMA_MAP_STATE
114 def_bool y
115
116config NEED_SG_DMA_LENGTH
117 def_bool y
118
119config SWIOTLB
120 def_bool y
121
122config IOMMU_HELPER
123 def_bool SWIOTLB
124
Ard Biesheuvel4cfb3612013-07-09 14:18:12 +0100125config KERNEL_MODE_NEON
126 def_bool y
127
Rob Herring92cc15f2014-04-18 17:19:59 -0500128config FIX_EARLYCON_MEM
129 def_bool y
130
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100131source "init/Kconfig"
132
133source "kernel/Kconfig.freezer"
134
Catalin Marinas1ae90e72012-09-05 17:47:44 +0100135menu "Platform selection"
136
137config ARCH_VEXPRESS
138 bool "ARMv8 software model (Versatile Express)"
139 select ARCH_REQUIRE_GPIOLIB
140 select COMMON_CLK_VERSATILE
Catalin Marinasaa1e8ec2013-02-28 18:14:37 +0000141 select POWER_RESET_VEXPRESS
Catalin Marinas1ae90e72012-09-05 17:47:44 +0100142 select VEXPRESS_CONFIG
143 help
144 This enables support for the ARMv8 software model (Versatile
145 Express).
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100146
Vinayak Kale15942852013-04-24 10:06:57 +0100147config ARCH_XGENE
148 bool "AppliedMicro X-Gene SOC Family"
149 help
150 This enables support for AppliedMicro X-Gene SOC Family
151
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100152endmenu
153
154menu "Bus support"
155
156config ARM_AMBA
157 bool
158
159endmenu
160
161menu "Kernel Features"
162
Jungseok Leee41ceed2014-05-12 10:40:38 +0100163choice
164 prompt "Page size"
165 default ARM64_4K_PAGES
166 help
167 Page size (translation granule) configuration.
168
169config ARM64_4K_PAGES
170 bool "4KB"
171 help
172 This feature enables 4KB pages support.
173
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100174config ARM64_64K_PAGES
Jungseok Leee41ceed2014-05-12 10:40:38 +0100175 bool "64KB"
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100176 help
177 This feature enables 64KB pages support (4KB by default)
178 allowing only two levels of page tables and faster TLB
179 look-up. AArch32 emulation is not available when this feature
180 is enabled.
181
Jungseok Leee41ceed2014-05-12 10:40:38 +0100182endchoice
183
184choice
185 prompt "Virtual address space size"
186 default ARM64_VA_BITS_39 if ARM64_4K_PAGES
187 default ARM64_VA_BITS_42 if ARM64_64K_PAGES
188 help
189 Allows choosing one of multiple possible virtual address
190 space sizes. The level of translation table is determined by
191 a combination of page size and virtual address space size.
192
193config ARM64_VA_BITS_39
194 bool "39-bit"
195 depends on ARM64_4K_PAGES
196
197config ARM64_VA_BITS_42
198 bool "42-bit"
199 depends on ARM64_64K_PAGES
200
Jungseok Leec79b9542014-05-12 18:40:51 +0900201config ARM64_VA_BITS_48
202 bool "48-bit"
203 depends on BROKEN
204
Jungseok Leee41ceed2014-05-12 10:40:38 +0100205endchoice
206
207config ARM64_VA_BITS
208 int
209 default 39 if ARM64_VA_BITS_39
210 default 42 if ARM64_VA_BITS_42
Jungseok Leec79b9542014-05-12 18:40:51 +0900211 default 48 if ARM64_VA_BITS_48
Jungseok Leee41ceed2014-05-12 10:40:38 +0100212
Catalin Marinasabe669d2014-07-15 15:37:21 +0100213config ARM64_PGTABLE_LEVELS
214 int
215 default 2 if ARM64_64K_PAGES && ARM64_VA_BITS_42
Catalin Marinas383c2792014-07-21 15:54:50 +0100216 default 3 if ARM64_64K_PAGES && ARM64_VA_BITS_48
Catalin Marinasabe669d2014-07-15 15:37:21 +0100217 default 3 if ARM64_4K_PAGES && ARM64_VA_BITS_39
218 default 4 if ARM64_4K_PAGES && ARM64_VA_BITS_48
Jungseok Leec79b9542014-05-12 18:40:51 +0900219
Will Deacona8720132013-10-11 14:52:19 +0100220config CPU_BIG_ENDIAN
221 bool "Build big-endian kernel"
222 help
223 Say Y if you plan on running a kernel in big-endian mode.
224
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100225config SMP
226 bool "Symmetric Multi-Processing"
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100227 help
228 This enables support for systems with more than one CPU. If
229 you say N here, the kernel will run on single and
230 multiprocessor machines, but will use only one CPU of a
231 multiprocessor machine. If you say Y here, the kernel will run
232 on many, but not all, single processor machines. On a single
233 processor machine, the kernel will run faster if you say N
234 here.
235
236 If you don't know what to do here, say N.
237
Mark Brownf6e763b2014-03-04 07:51:17 +0000238config SCHED_MC
239 bool "Multi-core scheduler support"
240 depends on SMP
241 help
242 Multi-core scheduler support improves the CPU scheduler's decision
243 making when dealing with multi-core CPU chips at a cost of slightly
244 increased overhead in some places. If unsure say N here.
245
246config SCHED_SMT
247 bool "SMT scheduler support"
248 depends on SMP
249 help
250 Improves the CPU scheduler's decision making when dealing with
251 MultiThreading at a cost of slightly increased overhead in some
252 places. If unsure say N here.
253
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100254config NR_CPUS
255 int "Maximum number of CPUs (2-32)"
256 range 2 32
257 depends on SMP
Vinayak Kale15942852013-04-24 10:06:57 +0100258 # These have to remain sorted largest to smallest
Rob Herring62aceb82013-11-22 21:07:31 +0000259 default "8"
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100260
Mark Rutland9327e2c2013-10-24 20:30:18 +0100261config HOTPLUG_CPU
262 bool "Support for hot-pluggable CPUs"
263 depends on SMP
264 help
265 Say Y here to experiment with turning CPUs off and on. CPUs
266 can be controlled through /sys/devices/system/cpu.
267
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100268source kernel/Kconfig.preempt
269
270config HZ
271 int
272 default 100
273
274config ARCH_HAS_HOLES_MEMORYMODEL
275 def_bool y if SPARSEMEM
276
277config ARCH_SPARSEMEM_ENABLE
278 def_bool y
279 select SPARSEMEM_VMEMMAP_ENABLE
280
281config ARCH_SPARSEMEM_DEFAULT
282 def_bool ARCH_SPARSEMEM_ENABLE
283
284config ARCH_SELECT_MEMORY_MODEL
285 def_bool ARCH_SPARSEMEM_ENABLE
286
287config HAVE_ARCH_PFN_VALID
288 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
289
290config HW_PERF_EVENTS
291 bool "Enable hardware performance counter support for perf events"
292 depends on PERF_EVENTS
293 default y
294 help
295 Enable hardware performance counter support for perf events. If
296 disabled, perf events will use software events only.
297
Steve Capper084bd292013-04-10 13:48:00 +0100298config SYS_SUPPORTS_HUGETLBFS
299 def_bool y
300
301config ARCH_WANT_GENERAL_HUGETLB
302 def_bool y
303
304config ARCH_WANT_HUGE_PMD_SHARE
305 def_bool y if !ARM64_64K_PAGES
306
Steve Capperaf074842013-04-19 16:23:57 +0100307config HAVE_ARCH_TRANSPARENT_HUGEPAGE
308 def_bool y
309
Catalin Marinasa41dc0e2014-04-03 17:48:54 +0100310config ARCH_HAS_CACHE_LINE_SIZE
311 def_bool y
312
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100313source "mm/Kconfig"
314
Stefano Stabelliniaa42aa12013-06-03 17:05:43 +0000315config XEN_DOM0
316 def_bool y
317 depends on XEN
318
319config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -0700320 bool "Xen guest support on ARM64"
Stefano Stabelliniaa42aa12013-06-03 17:05:43 +0000321 depends on ARM64 && OF
Stefano Stabellini83862cc2013-10-10 13:40:44 +0000322 select SWIOTLB_XEN
Stefano Stabelliniaa42aa12013-06-03 17:05:43 +0000323 help
324 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
325
Steve Capperd03bb142013-04-25 15:19:21 +0100326config FORCE_MAX_ZONEORDER
327 int
328 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
329 default "11"
330
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100331endmenu
332
333menu "Boot options"
334
335config CMDLINE
336 string "Default kernel command string"
337 default ""
338 help
339 Provide a set of default command-line options at build time by
340 entering them here. As a minimum, you should specify the the
341 root device (e.g. root=/dev/nfs).
342
343config CMDLINE_FORCE
344 bool "Always use the default kernel command string"
345 help
346 Always use the default kernel command string, even if the boot
347 loader passes other arguments to the kernel.
348 This is useful if you cannot or don't want to change the
349 command-line options your boot loader passes to the kernel.
350
Ard Biesheuvelf4f75ad52014-07-02 14:54:43 +0200351config EFI_STUB
352 bool
353
Mark Salterf84d0272014-04-15 21:59:30 -0400354config EFI
355 bool "UEFI runtime support"
356 depends on OF && !CPU_BIG_ENDIAN
357 select LIBFDT
358 select UCS2_STRING
359 select EFI_PARAMS_FROM_FDT
Ard Biesheuvele15dd492014-07-04 19:41:53 +0200360 select EFI_RUNTIME_WRAPPERS
Ard Biesheuvelf4f75ad52014-07-02 14:54:43 +0200361 select EFI_STUB
362 select EFI_ARMSTUB
Mark Salterf84d0272014-04-15 21:59:30 -0400363 default y
364 help
365 This option provides support for runtime services provided
366 by UEFI firmware (such as non-volatile variables, realtime
Mark Salter3c7f2552014-04-15 22:47:52 -0400367 clock, and platform reset). A UEFI stub is also provided to
368 allow the kernel to be booted as an EFI application. This
369 is only useful on systems that have UEFI firmware.
Mark Salterf84d0272014-04-15 21:59:30 -0400370
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100371endmenu
372
373menu "Userspace binary formats"
374
375source "fs/Kconfig.binfmt"
376
377config COMPAT
378 bool "Kernel support for 32-bit EL0"
379 depends on !ARM64_64K_PAGES
380 select COMPAT_BINFMT_ELF
Catalin Marinasaf1839e2012-10-08 16:28:08 -0700381 select HAVE_UID16
Al Viro84b9e9b2012-12-25 16:29:11 -0500382 select OLD_SIGSUSPEND3
Al Viro51682032012-12-25 19:31:29 -0500383 select COMPAT_OLD_SIGACTION
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100384 help
385 This option enables support for a 32-bit EL0 running under a 64-bit
386 kernel at EL1. AArch32-specific components such as system calls,
387 the user helper functions, VFP support and the ptrace interface are
388 handled appropriately by the kernel.
389
390 If you want to execute 32-bit userspace applications, say Y.
391
392config SYSVIPC_COMPAT
393 def_bool y
394 depends on COMPAT && SYSVIPC
395
396endmenu
397
Lorenzo Pieralisi166936b2013-11-07 18:37:14 +0000398menu "Power management options"
399
400source "kernel/power/Kconfig"
401
402config ARCH_SUSPEND_POSSIBLE
403 def_bool y
404
405config ARM64_CPU_SUSPEND
406 def_bool PM_SLEEP
407
408endmenu
409
Lorenzo Pieralisi13072202013-07-17 14:54:21 +0100410menu "CPU Power Management"
411
412source "drivers/cpuidle/Kconfig"
413
Rob Herring52e7e812014-02-24 11:27:57 +0900414source "drivers/cpufreq/Kconfig"
415
416endmenu
417
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100418source "net/Kconfig"
419
420source "drivers/Kconfig"
421
Mark Salterf84d0272014-04-15 21:59:30 -0400422source "drivers/firmware/Kconfig"
423
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100424source "fs/Kconfig"
425
Marc Zyngierc3eb5b12013-07-04 13:34:32 +0100426source "arch/arm64/kvm/Kconfig"
427
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100428source "arch/arm64/Kconfig.debug"
429
430source "security/Kconfig"
431
432source "crypto/Kconfig"
Ard Biesheuvel2c988332014-03-06 16:23:33 +0800433if CRYPTO
434source "arch/arm64/crypto/Kconfig"
435endif
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100436
437source "lib/Kconfig"