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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
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
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010019 select GENERIC_IOMAP
20 select GENERIC_IRQ_PROBE
21 select GENERIC_IRQ_SHOW
Stephen Boyd65cd4f62013-07-18 16:21:18 -070022 select GENERIC_SCHED_CLOCK
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010023 select GENERIC_SMP_IDLE_THREAD
Will Deacon12a0ef72013-11-06 17:20:22 +000024 select GENERIC_STRNCPY_FROM_USER
25 select GENERIC_STRNLEN_USER
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010026 select GENERIC_TIME_VSYSCALL
27 select HARDIRQS_SW_RESEND
Jiang Liu9732caf2014-01-07 22:17:13 +080028 select HAVE_ARCH_JUMP_LABEL
Vijaya Kumar K95292472014-01-28 11:20:22 +000029 select HAVE_ARCH_KGDB
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010030 select HAVE_ARCH_TRACEHOOK
Catalin Marinas9b2a60c2012-10-08 16:28:13 -070031 select HAVE_DEBUG_BUGVERBOSE
Catalin Marinasb69ec422012-10-08 16:28:11 -070032 select HAVE_DEBUG_KMEMLEAK
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010033 select HAVE_DMA_API_DEBUG
34 select HAVE_DMA_ATTRS
Laura Abbott6ac21042013-12-12 19:28:33 +000035 select HAVE_DMA_CONTIGUOUS
Will Deacon50afc332013-12-16 17:50:08 +000036 select HAVE_EFFICIENT_UNALIGNED_ACCESS
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010037 select HAVE_GENERIC_DMA_COHERENT
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010038 select HAVE_HW_BREAKPOINT if PERF_EVENTS
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010039 select HAVE_MEMBLOCK
Mark Rutland55834a72014-02-07 17:12:45 +000040 select HAVE_PATA_PLATFORM
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010041 select HAVE_PERF_EVENTS
Jean Pihet2ee0d7f2014-02-03 19:18:27 +010042 select HAVE_PERF_REGS
43 select HAVE_PERF_USER_STACK_DUMP
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010044 select IRQ_DOMAIN
Catalin Marinasfea2aca2012-10-16 11:26:57 +010045 select MODULES_USE_ELF_RELA
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010046 select NO_BOOTMEM
47 select OF
48 select OF_EARLY_FLATTREE
49 select PERF_USE_VMALLOC
Catalin Marinasaa1e8ec2013-02-28 18:14:37 +000050 select POWER_RESET
51 select POWER_SUPPLY
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010052 select RTC_LIB
53 select SPARSE_IRQ
Catalin Marinas7ac57a82012-10-08 16:28:16 -070054 select SYSCTL_EXCEPTION_TRACE
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010055 help
56 ARM 64-bit (AArch64) Linux support.
57
58config 64BIT
59 def_bool y
60
61config ARCH_PHYS_ADDR_T_64BIT
62 def_bool y
63
64config MMU
65 def_bool y
66
67config NO_IOPORT
68 def_bool y
69
70config STACKTRACE_SUPPORT
71 def_bool y
72
73config LOCKDEP_SUPPORT
74 def_bool y
75
76config TRACE_IRQFLAGS_SUPPORT
77 def_bool y
78
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010079config RWSEM_GENERIC_SPINLOCK
80 def_bool y
81
82config GENERIC_HWEIGHT
83 def_bool y
84
85config GENERIC_CSUM
86 def_bool y
87
88config GENERIC_CALIBRATE_DELAY
89 def_bool y
90
Catalin Marinas19e76402014-02-27 12:09:22 +000091config ZONE_DMA
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010092 def_bool y
93
94config ARCH_DMA_ADDR_T_64BIT
95 def_bool y
96
97config NEED_DMA_MAP_STATE
98 def_bool y
99
100config NEED_SG_DMA_LENGTH
101 def_bool y
102
103config SWIOTLB
104 def_bool y
105
106config IOMMU_HELPER
107 def_bool SWIOTLB
108
Ard Biesheuvel4cfb3612013-07-09 14:18:12 +0100109config KERNEL_MODE_NEON
110 def_bool y
111
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100112source "init/Kconfig"
113
114source "kernel/Kconfig.freezer"
115
Catalin Marinas1ae90e72012-09-05 17:47:44 +0100116menu "Platform selection"
117
118config ARCH_VEXPRESS
119 bool "ARMv8 software model (Versatile Express)"
120 select ARCH_REQUIRE_GPIOLIB
121 select COMMON_CLK_VERSATILE
Catalin Marinasaa1e8ec2013-02-28 18:14:37 +0000122 select POWER_RESET_VEXPRESS
Catalin Marinas1ae90e72012-09-05 17:47:44 +0100123 select VEXPRESS_CONFIG
124 help
125 This enables support for the ARMv8 software model (Versatile
126 Express).
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100127
Vinayak Kale15942852013-04-24 10:06:57 +0100128config ARCH_XGENE
129 bool "AppliedMicro X-Gene SOC Family"
130 help
131 This enables support for AppliedMicro X-Gene SOC Family
132
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100133endmenu
134
135menu "Bus support"
136
137config ARM_AMBA
138 bool
139
140endmenu
141
142menu "Kernel Features"
143
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100144config ARM64_64K_PAGES
145 bool "Enable 64KB pages support"
146 help
147 This feature enables 64KB pages support (4KB by default)
148 allowing only two levels of page tables and faster TLB
149 look-up. AArch32 emulation is not available when this feature
150 is enabled.
151
Will Deacona8720132013-10-11 14:52:19 +0100152config CPU_BIG_ENDIAN
153 bool "Build big-endian kernel"
154 help
155 Say Y if you plan on running a kernel in big-endian mode.
156
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100157config SMP
158 bool "Symmetric Multi-Processing"
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100159 help
160 This enables support for systems with more than one CPU. If
161 you say N here, the kernel will run on single and
162 multiprocessor machines, but will use only one CPU of a
163 multiprocessor machine. If you say Y here, the kernel will run
164 on many, but not all, single processor machines. On a single
165 processor machine, the kernel will run faster if you say N
166 here.
167
168 If you don't know what to do here, say N.
169
Mark Brownf6e763b2014-03-04 07:51:17 +0000170config SCHED_MC
171 bool "Multi-core scheduler support"
172 depends on SMP
173 help
174 Multi-core scheduler support improves the CPU scheduler's decision
175 making when dealing with multi-core CPU chips at a cost of slightly
176 increased overhead in some places. If unsure say N here.
177
178config SCHED_SMT
179 bool "SMT scheduler support"
180 depends on SMP
181 help
182 Improves the CPU scheduler's decision making when dealing with
183 MultiThreading at a cost of slightly increased overhead in some
184 places. If unsure say N here.
185
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100186config NR_CPUS
187 int "Maximum number of CPUs (2-32)"
188 range 2 32
189 depends on SMP
Vinayak Kale15942852013-04-24 10:06:57 +0100190 # These have to remain sorted largest to smallest
Rob Herring62aceb82013-11-22 21:07:31 +0000191 default "8"
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100192
Mark Rutland9327e2c2013-10-24 20:30:18 +0100193config HOTPLUG_CPU
194 bool "Support for hot-pluggable CPUs"
195 depends on SMP
196 help
197 Say Y here to experiment with turning CPUs off and on. CPUs
198 can be controlled through /sys/devices/system/cpu.
199
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100200source kernel/Kconfig.preempt
201
202config HZ
203 int
204 default 100
205
206config ARCH_HAS_HOLES_MEMORYMODEL
207 def_bool y if SPARSEMEM
208
209config ARCH_SPARSEMEM_ENABLE
210 def_bool y
211 select SPARSEMEM_VMEMMAP_ENABLE
212
213config ARCH_SPARSEMEM_DEFAULT
214 def_bool ARCH_SPARSEMEM_ENABLE
215
216config ARCH_SELECT_MEMORY_MODEL
217 def_bool ARCH_SPARSEMEM_ENABLE
218
219config HAVE_ARCH_PFN_VALID
220 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
221
222config HW_PERF_EVENTS
223 bool "Enable hardware performance counter support for perf events"
224 depends on PERF_EVENTS
225 default y
226 help
227 Enable hardware performance counter support for perf events. If
228 disabled, perf events will use software events only.
229
Steve Capper084bd292013-04-10 13:48:00 +0100230config SYS_SUPPORTS_HUGETLBFS
231 def_bool y
232
233config ARCH_WANT_GENERAL_HUGETLB
234 def_bool y
235
236config ARCH_WANT_HUGE_PMD_SHARE
237 def_bool y if !ARM64_64K_PAGES
238
Steve Capperaf074842013-04-19 16:23:57 +0100239config HAVE_ARCH_TRANSPARENT_HUGEPAGE
240 def_bool y
241
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100242source "mm/Kconfig"
243
Stefano Stabelliniaa42aa12013-06-03 17:05:43 +0000244config XEN_DOM0
245 def_bool y
246 depends on XEN
247
248config XEN
249 bool "Xen guest support on ARM64 (EXPERIMENTAL)"
250 depends on ARM64 && OF
Stefano Stabellini83862cc2013-10-10 13:40:44 +0000251 select SWIOTLB_XEN
Stefano Stabelliniaa42aa12013-06-03 17:05:43 +0000252 help
253 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
254
Steve Capperd03bb142013-04-25 15:19:21 +0100255config FORCE_MAX_ZONEORDER
256 int
257 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
258 default "11"
259
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100260endmenu
261
262menu "Boot options"
263
264config CMDLINE
265 string "Default kernel command string"
266 default ""
267 help
268 Provide a set of default command-line options at build time by
269 entering them here. As a minimum, you should specify the the
270 root device (e.g. root=/dev/nfs).
271
272config CMDLINE_FORCE
273 bool "Always use the default kernel command string"
274 help
275 Always use the default kernel command string, even if the boot
276 loader passes other arguments to the kernel.
277 This is useful if you cannot or don't want to change the
278 command-line options your boot loader passes to the kernel.
279
280endmenu
281
282menu "Userspace binary formats"
283
284source "fs/Kconfig.binfmt"
285
286config COMPAT
287 bool "Kernel support for 32-bit EL0"
288 depends on !ARM64_64K_PAGES
289 select COMPAT_BINFMT_ELF
Catalin Marinasaf1839e2012-10-08 16:28:08 -0700290 select HAVE_UID16
Al Viro84b9e9b2012-12-25 16:29:11 -0500291 select OLD_SIGSUSPEND3
Al Viro51682032012-12-25 19:31:29 -0500292 select COMPAT_OLD_SIGACTION
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100293 help
294 This option enables support for a 32-bit EL0 running under a 64-bit
295 kernel at EL1. AArch32-specific components such as system calls,
296 the user helper functions, VFP support and the ptrace interface are
297 handled appropriately by the kernel.
298
299 If you want to execute 32-bit userspace applications, say Y.
300
301config SYSVIPC_COMPAT
302 def_bool y
303 depends on COMPAT && SYSVIPC
304
305endmenu
306
Lorenzo Pieralisi166936b2013-11-07 18:37:14 +0000307menu "Power management options"
308
309source "kernel/power/Kconfig"
310
311config ARCH_SUSPEND_POSSIBLE
312 def_bool y
313
314config ARM64_CPU_SUSPEND
315 def_bool PM_SLEEP
316
317endmenu
318
Lorenzo Pieralisi13072202013-07-17 14:54:21 +0100319menu "CPU Power Management"
320
321source "drivers/cpuidle/Kconfig"
322
323endmenu
324
Rob Herringaddea9ef02014-02-24 02:27:57 +0000325menu "Power management options"
326
327source "kernel/power/Kconfig"
328
329source "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"