blob: e6e4d3749a6e9d1eef343ec1f502c265a17c8e6d [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
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100115source "init/Kconfig"
116
117source "kernel/Kconfig.freezer"
118
Catalin Marinas1ae90e72012-09-05 17:47:44 +0100119menu "Platform selection"
120
121config ARCH_VEXPRESS
122 bool "ARMv8 software model (Versatile Express)"
123 select ARCH_REQUIRE_GPIOLIB
124 select COMMON_CLK_VERSATILE
Catalin Marinasaa1e8ec2013-02-28 18:14:37 +0000125 select POWER_RESET_VEXPRESS
Catalin Marinas1ae90e72012-09-05 17:47:44 +0100126 select VEXPRESS_CONFIG
127 help
128 This enables support for the ARMv8 software model (Versatile
129 Express).
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100130
Vinayak Kale15942852013-04-24 10:06:57 +0100131config ARCH_XGENE
132 bool "AppliedMicro X-Gene SOC Family"
133 help
134 This enables support for AppliedMicro X-Gene SOC Family
135
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100136endmenu
137
138menu "Bus support"
139
140config ARM_AMBA
141 bool
142
143endmenu
144
145menu "Kernel Features"
146
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100147config ARM64_64K_PAGES
148 bool "Enable 64KB pages support"
149 help
150 This feature enables 64KB pages support (4KB by default)
151 allowing only two levels of page tables and faster TLB
152 look-up. AArch32 emulation is not available when this feature
153 is enabled.
154
Will Deacona8720132013-10-11 14:52:19 +0100155config CPU_BIG_ENDIAN
156 bool "Build big-endian kernel"
157 help
158 Say Y if you plan on running a kernel in big-endian mode.
159
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100160config SMP
161 bool "Symmetric Multi-Processing"
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100162 help
163 This enables support for systems with more than one CPU. If
164 you say N here, the kernel will run on single and
165 multiprocessor machines, but will use only one CPU of a
166 multiprocessor machine. If you say Y here, the kernel will run
167 on many, but not all, single processor machines. On a single
168 processor machine, the kernel will run faster if you say N
169 here.
170
171 If you don't know what to do here, say N.
172
Mark Brownf6e763b2014-03-04 07:51:17 +0000173config SCHED_MC
174 bool "Multi-core scheduler support"
175 depends on SMP
176 help
177 Multi-core scheduler support improves the CPU scheduler's decision
178 making when dealing with multi-core CPU chips at a cost of slightly
179 increased overhead in some places. If unsure say N here.
180
181config SCHED_SMT
182 bool "SMT scheduler support"
183 depends on SMP
184 help
185 Improves the CPU scheduler's decision making when dealing with
186 MultiThreading at a cost of slightly increased overhead in some
187 places. If unsure say N here.
188
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100189config NR_CPUS
190 int "Maximum number of CPUs (2-32)"
191 range 2 32
192 depends on SMP
Vinayak Kale15942852013-04-24 10:06:57 +0100193 # These have to remain sorted largest to smallest
Rob Herring62aceb82013-11-22 21:07:31 +0000194 default "8"
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100195
Mark Rutland9327e2c2013-10-24 20:30:18 +0100196config HOTPLUG_CPU
197 bool "Support for hot-pluggable CPUs"
198 depends on SMP
199 help
200 Say Y here to experiment with turning CPUs off and on. CPUs
201 can be controlled through /sys/devices/system/cpu.
202
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100203source kernel/Kconfig.preempt
204
205config HZ
206 int
207 default 100
208
209config ARCH_HAS_HOLES_MEMORYMODEL
210 def_bool y if SPARSEMEM
211
212config ARCH_SPARSEMEM_ENABLE
213 def_bool y
214 select SPARSEMEM_VMEMMAP_ENABLE
215
216config ARCH_SPARSEMEM_DEFAULT
217 def_bool ARCH_SPARSEMEM_ENABLE
218
219config ARCH_SELECT_MEMORY_MODEL
220 def_bool ARCH_SPARSEMEM_ENABLE
221
222config HAVE_ARCH_PFN_VALID
223 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
224
225config HW_PERF_EVENTS
226 bool "Enable hardware performance counter support for perf events"
227 depends on PERF_EVENTS
228 default y
229 help
230 Enable hardware performance counter support for perf events. If
231 disabled, perf events will use software events only.
232
Steve Capper084bd292013-04-10 13:48:00 +0100233config SYS_SUPPORTS_HUGETLBFS
234 def_bool y
235
236config ARCH_WANT_GENERAL_HUGETLB
237 def_bool y
238
239config ARCH_WANT_HUGE_PMD_SHARE
240 def_bool y if !ARM64_64K_PAGES
241
Steve Capperaf074842013-04-19 16:23:57 +0100242config HAVE_ARCH_TRANSPARENT_HUGEPAGE
243 def_bool y
244
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100245source "mm/Kconfig"
246
Stefano Stabelliniaa42aa12013-06-03 17:05:43 +0000247config XEN_DOM0
248 def_bool y
249 depends on XEN
250
251config XEN
252 bool "Xen guest support on ARM64 (EXPERIMENTAL)"
253 depends on ARM64 && OF
Stefano Stabellini83862cc2013-10-10 13:40:44 +0000254 select SWIOTLB_XEN
Stefano Stabelliniaa42aa12013-06-03 17:05:43 +0000255 help
256 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
257
Steve Capperd03bb142013-04-25 15:19:21 +0100258config FORCE_MAX_ZONEORDER
259 int
260 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
261 default "11"
262
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100263endmenu
264
265menu "Boot options"
266
267config CMDLINE
268 string "Default kernel command string"
269 default ""
270 help
271 Provide a set of default command-line options at build time by
272 entering them here. As a minimum, you should specify the the
273 root device (e.g. root=/dev/nfs).
274
275config CMDLINE_FORCE
276 bool "Always use the default kernel command string"
277 help
278 Always use the default kernel command string, even if the boot
279 loader passes other arguments to the kernel.
280 This is useful if you cannot or don't want to change the
281 command-line options your boot loader passes to the kernel.
282
283endmenu
284
285menu "Userspace binary formats"
286
287source "fs/Kconfig.binfmt"
288
289config COMPAT
290 bool "Kernel support for 32-bit EL0"
291 depends on !ARM64_64K_PAGES
292 select COMPAT_BINFMT_ELF
Catalin Marinasaf1839e2012-10-08 16:28:08 -0700293 select HAVE_UID16
Al Viro84b9e9b2012-12-25 16:29:11 -0500294 select OLD_SIGSUSPEND3
Al Viro51682032012-12-25 19:31:29 -0500295 select COMPAT_OLD_SIGACTION
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100296 help
297 This option enables support for a 32-bit EL0 running under a 64-bit
298 kernel at EL1. AArch32-specific components such as system calls,
299 the user helper functions, VFP support and the ptrace interface are
300 handled appropriately by the kernel.
301
302 If you want to execute 32-bit userspace applications, say Y.
303
304config SYSVIPC_COMPAT
305 def_bool y
306 depends on COMPAT && SYSVIPC
307
308endmenu
309
Lorenzo Pieralisi166936b2013-11-07 18:37:14 +0000310menu "Power management options"
311
312source "kernel/power/Kconfig"
313
314config ARCH_SUSPEND_POSSIBLE
315 def_bool y
316
317config ARM64_CPU_SUSPEND
318 def_bool PM_SLEEP
319
320endmenu
321
Lorenzo Pieralisi13072202013-07-17 14:54:21 +0100322menu "CPU Power Management"
323
324source "drivers/cpuidle/Kconfig"
325
Rob Herring52e7e812014-02-24 11:27:57 +0900326source "kernel/power/Kconfig"
327
328source "drivers/cpufreq/Kconfig"
329
330endmenu
331
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100332source "net/Kconfig"
333
334source "drivers/Kconfig"
335
336source "fs/Kconfig"
337
Marc Zyngierc3eb5b12013-07-04 13:34:32 +0100338source "arch/arm64/kvm/Kconfig"
339
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100340source "arch/arm64/Kconfig.debug"
341
342source "security/Kconfig"
343
344source "crypto/Kconfig"
345
346source "lib/Kconfig"