blob: b8053be1d8036c95c2c184c7e6e7a28e1829c3ae [file] [log] [blame]
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
Laura Abbottd4932f92014-10-09 15:26:44 -070021 select GENERIC_ALLOCATOR
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010022 select GENERIC_CLOCKEVENTS
Lorenzo Pieralisi1f850082013-09-04 10:55:17 +010023 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
Ard Biesheuvel3be1a5c2014-03-04 01:10:04 +000024 select GENERIC_CPU_AUTOPROBE
Mark Salterbf4b5582014-04-07 15:39:52 -070025 select GENERIC_EARLY_IOREMAP
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010026 select GENERIC_IOMAP
27 select GENERIC_IRQ_PROBE
28 select GENERIC_IRQ_SHOW
Stephen Boyd65cd4f62013-07-18 16:21:18 -070029 select GENERIC_SCHED_CLOCK
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010030 select GENERIC_SMP_IDLE_THREAD
Will Deacon12a0ef72013-11-06 17:20:22 +000031 select GENERIC_STRNCPY_FROM_USER
32 select GENERIC_STRNLEN_USER
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010033 select GENERIC_TIME_VSYSCALL
Marc Zyngiera1ddc742014-08-26 11:03:17 +010034 select HANDLE_DOMAIN_IRQ
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010035 select HARDIRQS_SW_RESEND
AKASHI Takahiro875cbf32014-07-04 08:28:30 +010036 select HAVE_ARCH_AUDITSYSCALL
Jiang Liu9732caf2014-01-07 22:17:13 +080037 select HAVE_ARCH_JUMP_LABEL
Vijaya Kumar K95292472014-01-28 11:20:22 +000038 select HAVE_ARCH_KGDB
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010039 select HAVE_ARCH_TRACEHOOK
Zi Shen Lime54bcde2014-08-26 21:15:30 -070040 select HAVE_BPF_JIT
AKASHI Takahiroaf64d2a2014-04-30 10:54:32 +010041 select HAVE_C_RECORDMCOUNT
Laura Abbottc0c264a2014-06-25 23:55:03 +010042 select HAVE_CC_STACKPROTECTOR
Catalin Marinas9b2a60c2012-10-08 16:28:13 -070043 select HAVE_DEBUG_BUGVERBOSE
Catalin Marinasb69ec422012-10-08 16:28:11 -070044 select HAVE_DEBUG_KMEMLEAK
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010045 select HAVE_DMA_API_DEBUG
46 select HAVE_DMA_ATTRS
Laura Abbott6ac21042013-12-12 19:28:33 +000047 select HAVE_DMA_CONTIGUOUS
AKASHI Takahirobd7d38d2014-04-30 10:54:34 +010048 select HAVE_DYNAMIC_FTRACE
Will Deacon50afc332013-12-16 17:50:08 +000049 select HAVE_EFFICIENT_UNALIGNED_ACCESS
AKASHI Takahiroaf64d2a2014-04-30 10:54:32 +010050 select HAVE_FTRACE_MCOUNT_RECORD
AKASHI Takahiro819e50e2014-04-30 18:54:33 +090051 select HAVE_FUNCTION_TRACER
52 select HAVE_FUNCTION_GRAPH_TRACER
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010053 select HAVE_GENERIC_DMA_COHERENT
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010054 select HAVE_HW_BREAKPOINT if PERF_EVENTS
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010055 select HAVE_MEMBLOCK
Mark Rutland55834a72014-02-07 17:12:45 +000056 select HAVE_PATA_PLATFORM
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010057 select HAVE_PERF_EVENTS
Jean Pihet2ee0d7f2014-02-03 19:18:27 +010058 select HAVE_PERF_REGS
59 select HAVE_PERF_USER_STACK_DUMP
Steve Capper5e5f6dc2014-10-09 15:29:23 -070060 select HAVE_RCU_TABLE_FREE
AKASHI Takahiro055b1212014-04-30 10:54:36 +010061 select HAVE_SYSCALL_TRACEPOINTS
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010062 select IRQ_DOMAIN
Catalin Marinasfea2aca2012-10-16 11:26:57 +010063 select MODULES_USE_ELF_RELA
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010064 select NO_BOOTMEM
65 select OF
66 select OF_EARLY_FLATTREE
Marek Szyprowski9bf14b72014-02-28 14:42:55 +010067 select OF_RESERVED_MEM
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010068 select PERF_USE_VMALLOC
Catalin Marinasaa1e8ec2013-02-28 18:14:37 +000069 select POWER_RESET
70 select POWER_SUPPLY
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010071 select RTC_LIB
72 select SPARSE_IRQ
Catalin Marinas7ac57a82012-10-08 16:28:16 -070073 select SYSCTL_EXCEPTION_TRACE
Larry Bassel6c81fe72014-05-30 12:34:15 -070074 select HAVE_CONTEXT_TRACKING
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010075 help
76 ARM 64-bit (AArch64) Linux support.
77
78config 64BIT
79 def_bool y
80
81config ARCH_PHYS_ADDR_T_64BIT
82 def_bool y
83
84config MMU
85 def_bool y
86
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -070087config NO_IOPORT_MAP
Liviu Dudaud1e6dc92014-09-29 15:29:31 +010088 def_bool y if !PCI
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010089
90config STACKTRACE_SUPPORT
91 def_bool y
92
93config LOCKDEP_SUPPORT
94 def_bool y
95
96config TRACE_IRQFLAGS_SUPPORT
97 def_bool y
98
Will Deaconc209f792014-03-14 17:47:05 +000099config RWSEM_XCHGADD_ALGORITHM
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100100 def_bool y
101
102config GENERIC_HWEIGHT
103 def_bool y
104
105config GENERIC_CSUM
106 def_bool y
107
108config GENERIC_CALIBRATE_DELAY
109 def_bool y
110
Catalin Marinas19e76402014-02-27 12:09:22 +0000111config ZONE_DMA
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100112 def_bool y
113
Steve Capper29e56942014-10-09 15:29:25 -0700114config HAVE_GENERIC_RCU_GUP
115 def_bool y
116
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100117config ARCH_DMA_ADDR_T_64BIT
118 def_bool y
119
120config NEED_DMA_MAP_STATE
121 def_bool y
122
123config NEED_SG_DMA_LENGTH
124 def_bool y
125
126config SWIOTLB
127 def_bool y
128
129config IOMMU_HELPER
130 def_bool SWIOTLB
131
Ard Biesheuvel4cfb3612013-07-09 14:18:12 +0100132config KERNEL_MODE_NEON
133 def_bool y
134
Rob Herring92cc15f2014-04-18 17:19:59 -0500135config FIX_EARLYCON_MEM
136 def_bool y
137
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100138source "init/Kconfig"
139
140source "kernel/Kconfig.freezer"
141
Catalin Marinas1ae90e72012-09-05 17:47:44 +0100142menu "Platform selection"
143
Radha Mohan Chintakuntla28f74202014-04-08 18:47:51 +0530144config ARCH_THUNDER
145 bool "Cavium Inc. Thunder SoC Family"
146 help
147 This enables support for Cavium's Thunder Family of SoCs.
148
Catalin Marinas1ae90e72012-09-05 17:47:44 +0100149config ARCH_VEXPRESS
150 bool "ARMv8 software model (Versatile Express)"
151 select ARCH_REQUIRE_GPIOLIB
152 select COMMON_CLK_VERSATILE
Catalin Marinasaa1e8ec2013-02-28 18:14:37 +0000153 select POWER_RESET_VEXPRESS
Catalin Marinas1ae90e72012-09-05 17:47:44 +0100154 select VEXPRESS_CONFIG
155 help
156 This enables support for the ARMv8 software model (Versatile
157 Express).
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100158
Vinayak Kale15942852013-04-24 10:06:57 +0100159config ARCH_XGENE
160 bool "AppliedMicro X-Gene SOC Family"
161 help
162 This enables support for AppliedMicro X-Gene SOC Family
163
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100164endmenu
165
166menu "Bus support"
167
168config ARM_AMBA
169 bool
170
Liviu Dudaud1e6dc92014-09-29 15:29:31 +0100171config PCI
172 bool "PCI support"
173 help
174 This feature enables support for PCI bus system. If you say Y
175 here, the kernel will include drivers and infrastructure code
176 to support PCI bus devices.
177
178config PCI_DOMAINS
179 def_bool PCI
180
181config PCI_DOMAINS_GENERIC
182 def_bool PCI
183
184config PCI_SYSCALL
185 def_bool PCI
186
187source "drivers/pci/Kconfig"
188source "drivers/pci/pcie/Kconfig"
189source "drivers/pci/hotplug/Kconfig"
190
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100191endmenu
192
193menu "Kernel Features"
194
Jungseok Leee41ceed2014-05-12 10:40:38 +0100195choice
196 prompt "Page size"
197 default ARM64_4K_PAGES
198 help
199 Page size (translation granule) configuration.
200
201config ARM64_4K_PAGES
202 bool "4KB"
203 help
204 This feature enables 4KB pages support.
205
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100206config ARM64_64K_PAGES
Jungseok Leee41ceed2014-05-12 10:40:38 +0100207 bool "64KB"
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100208 help
209 This feature enables 64KB pages support (4KB by default)
210 allowing only two levels of page tables and faster TLB
211 look-up. AArch32 emulation is not available when this feature
212 is enabled.
213
Jungseok Leee41ceed2014-05-12 10:40:38 +0100214endchoice
215
216choice
217 prompt "Virtual address space size"
218 default ARM64_VA_BITS_39 if ARM64_4K_PAGES
219 default ARM64_VA_BITS_42 if ARM64_64K_PAGES
220 help
221 Allows choosing one of multiple possible virtual address
222 space sizes. The level of translation table is determined by
223 a combination of page size and virtual address space size.
224
225config ARM64_VA_BITS_39
226 bool "39-bit"
227 depends on ARM64_4K_PAGES
228
229config ARM64_VA_BITS_42
230 bool "42-bit"
231 depends on ARM64_64K_PAGES
232
Jungseok Leec79b9542014-05-12 18:40:51 +0900233config ARM64_VA_BITS_48
234 bool "48-bit"
Christoffer Dall04f905a2014-10-10 11:14:30 +0100235 depends on !ARM_SMMU
Jungseok Leec79b9542014-05-12 18:40:51 +0900236
Jungseok Leee41ceed2014-05-12 10:40:38 +0100237endchoice
238
239config ARM64_VA_BITS
240 int
241 default 39 if ARM64_VA_BITS_39
242 default 42 if ARM64_VA_BITS_42
Jungseok Leec79b9542014-05-12 18:40:51 +0900243 default 48 if ARM64_VA_BITS_48
Jungseok Leee41ceed2014-05-12 10:40:38 +0100244
Catalin Marinasabe669d2014-07-15 15:37:21 +0100245config ARM64_PGTABLE_LEVELS
246 int
247 default 2 if ARM64_64K_PAGES && ARM64_VA_BITS_42
Catalin Marinas383c2792014-07-21 15:54:50 +0100248 default 3 if ARM64_64K_PAGES && ARM64_VA_BITS_48
Catalin Marinasabe669d2014-07-15 15:37:21 +0100249 default 3 if ARM64_4K_PAGES && ARM64_VA_BITS_39
250 default 4 if ARM64_4K_PAGES && ARM64_VA_BITS_48
Jungseok Leec79b9542014-05-12 18:40:51 +0900251
Will Deacona8720132013-10-11 14:52:19 +0100252config CPU_BIG_ENDIAN
253 bool "Build big-endian kernel"
254 help
255 Say Y if you plan on running a kernel in big-endian mode.
256
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100257config SMP
258 bool "Symmetric Multi-Processing"
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100259 help
260 This enables support for systems with more than one CPU. If
261 you say N here, the kernel will run on single and
262 multiprocessor machines, but will use only one CPU of a
263 multiprocessor machine. If you say Y here, the kernel will run
264 on many, but not all, single processor machines. On a single
265 processor machine, the kernel will run faster if you say N
266 here.
267
268 If you don't know what to do here, say N.
269
Mark Brownf6e763b2014-03-04 07:51:17 +0000270config SCHED_MC
271 bool "Multi-core scheduler support"
272 depends on SMP
273 help
274 Multi-core scheduler support improves the CPU scheduler's decision
275 making when dealing with multi-core CPU chips at a cost of slightly
276 increased overhead in some places. If unsure say N here.
277
278config SCHED_SMT
279 bool "SMT scheduler support"
280 depends on SMP
281 help
282 Improves the CPU scheduler's decision making when dealing with
283 MultiThreading at a cost of slightly increased overhead in some
284 places. If unsure say N here.
285
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100286config NR_CPUS
Robert Richtere3672642014-09-08 12:44:48 +0100287 int "Maximum number of CPUs (2-64)"
288 range 2 64
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100289 depends on SMP
Vinayak Kale15942852013-04-24 10:06:57 +0100290 # These have to remain sorted largest to smallest
Robert Richtere3672642014-09-08 12:44:48 +0100291 default "64"
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100292
Mark Rutland9327e2c2013-10-24 20:30:18 +0100293config HOTPLUG_CPU
294 bool "Support for hot-pluggable CPUs"
295 depends on SMP
296 help
297 Say Y here to experiment with turning CPUs off and on. CPUs
298 can be controlled through /sys/devices/system/cpu.
299
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100300source kernel/Kconfig.preempt
301
302config HZ
303 int
304 default 100
305
306config ARCH_HAS_HOLES_MEMORYMODEL
307 def_bool y if SPARSEMEM
308
309config ARCH_SPARSEMEM_ENABLE
310 def_bool y
311 select SPARSEMEM_VMEMMAP_ENABLE
312
313config ARCH_SPARSEMEM_DEFAULT
314 def_bool ARCH_SPARSEMEM_ENABLE
315
316config ARCH_SELECT_MEMORY_MODEL
317 def_bool ARCH_SPARSEMEM_ENABLE
318
319config HAVE_ARCH_PFN_VALID
320 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
321
322config HW_PERF_EVENTS
323 bool "Enable hardware performance counter support for perf events"
324 depends on PERF_EVENTS
325 default y
326 help
327 Enable hardware performance counter support for perf events. If
328 disabled, perf events will use software events only.
329
Steve Capper084bd292013-04-10 13:48:00 +0100330config SYS_SUPPORTS_HUGETLBFS
331 def_bool y
332
333config ARCH_WANT_GENERAL_HUGETLB
334 def_bool y
335
336config ARCH_WANT_HUGE_PMD_SHARE
337 def_bool y if !ARM64_64K_PAGES
338
Steve Capperaf074842013-04-19 16:23:57 +0100339config HAVE_ARCH_TRANSPARENT_HUGEPAGE
340 def_bool y
341
Catalin Marinasa41dc0e2014-04-03 17:48:54 +0100342config ARCH_HAS_CACHE_LINE_SIZE
343 def_bool y
344
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100345source "mm/Kconfig"
346
Stefano Stabelliniaa42aa12013-06-03 17:05:43 +0000347config XEN_DOM0
348 def_bool y
349 depends on XEN
350
351config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -0700352 bool "Xen guest support on ARM64"
Stefano Stabelliniaa42aa12013-06-03 17:05:43 +0000353 depends on ARM64 && OF
Stefano Stabellini83862cc2013-10-10 13:40:44 +0000354 select SWIOTLB_XEN
Stefano Stabelliniaa42aa12013-06-03 17:05:43 +0000355 help
356 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
357
Steve Capperd03bb142013-04-25 15:19:21 +0100358config FORCE_MAX_ZONEORDER
359 int
360 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
361 default "11"
362
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100363endmenu
364
365menu "Boot options"
366
367config CMDLINE
368 string "Default kernel command string"
369 default ""
370 help
371 Provide a set of default command-line options at build time by
372 entering them here. As a minimum, you should specify the the
373 root device (e.g. root=/dev/nfs).
374
375config CMDLINE_FORCE
376 bool "Always use the default kernel command string"
377 help
378 Always use the default kernel command string, even if the boot
379 loader passes other arguments to the kernel.
380 This is useful if you cannot or don't want to change the
381 command-line options your boot loader passes to the kernel.
382
Ard Biesheuvelf4f75ad52014-07-02 14:54:43 +0200383config EFI_STUB
384 bool
385
Mark Salterf84d0272014-04-15 21:59:30 -0400386config EFI
387 bool "UEFI runtime support"
388 depends on OF && !CPU_BIG_ENDIAN
389 select LIBFDT
390 select UCS2_STRING
391 select EFI_PARAMS_FROM_FDT
Ard Biesheuvele15dd492014-07-04 19:41:53 +0200392 select EFI_RUNTIME_WRAPPERS
Ard Biesheuvelf4f75ad52014-07-02 14:54:43 +0200393 select EFI_STUB
394 select EFI_ARMSTUB
Mark Salterf84d0272014-04-15 21:59:30 -0400395 default y
396 help
397 This option provides support for runtime services provided
398 by UEFI firmware (such as non-volatile variables, realtime
Mark Salter3c7f2552014-04-15 22:47:52 -0400399 clock, and platform reset). A UEFI stub is also provided to
400 allow the kernel to be booted as an EFI application. This
401 is only useful on systems that have UEFI firmware.
Mark Salterf84d0272014-04-15 21:59:30 -0400402
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100403endmenu
404
405menu "Userspace binary formats"
406
407source "fs/Kconfig.binfmt"
408
409config COMPAT
410 bool "Kernel support for 32-bit EL0"
411 depends on !ARM64_64K_PAGES
412 select COMPAT_BINFMT_ELF
Catalin Marinasaf1839e2012-10-08 16:28:08 -0700413 select HAVE_UID16
Al Viro84b9e9b2012-12-25 16:29:11 -0500414 select OLD_SIGSUSPEND3
Al Viro51682032012-12-25 19:31:29 -0500415 select COMPAT_OLD_SIGACTION
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100416 help
417 This option enables support for a 32-bit EL0 running under a 64-bit
418 kernel at EL1. AArch32-specific components such as system calls,
419 the user helper functions, VFP support and the ptrace interface are
420 handled appropriately by the kernel.
421
422 If you want to execute 32-bit userspace applications, say Y.
423
424config SYSVIPC_COMPAT
425 def_bool y
426 depends on COMPAT && SYSVIPC
427
428endmenu
429
Lorenzo Pieralisi166936b2013-11-07 18:37:14 +0000430menu "Power management options"
431
432source "kernel/power/Kconfig"
433
434config ARCH_SUSPEND_POSSIBLE
435 def_bool y
436
437config ARM64_CPU_SUSPEND
438 def_bool PM_SLEEP
439
440endmenu
441
Lorenzo Pieralisi13072202013-07-17 14:54:21 +0100442menu "CPU Power Management"
443
444source "drivers/cpuidle/Kconfig"
445
Rob Herring52e7e812014-02-24 11:27:57 +0900446source "drivers/cpufreq/Kconfig"
447
448endmenu
449
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100450source "net/Kconfig"
451
452source "drivers/Kconfig"
453
Mark Salterf84d0272014-04-15 21:59:30 -0400454source "drivers/firmware/Kconfig"
455
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100456source "fs/Kconfig"
457
Marc Zyngierc3eb5b12013-07-04 13:34:32 +0100458source "arch/arm64/kvm/Kconfig"
459
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100460source "arch/arm64/Kconfig.debug"
461
462source "security/Kconfig"
463
464source "crypto/Kconfig"
Ard Biesheuvel2c988332014-03-06 16:23:33 +0800465if CRYPTO
466source "arch/arm64/crypto/Kconfig"
467endif
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100468
469source "lib/Kconfig"