3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
4 select ARCH_USE_CMPXCHG_LOCKREF
5 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
6 select ARCH_WANT_OPTIONAL_GPIOLIB
7 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
8 select ARCH_WANT_FRAME_POINTERS
12 select BUILDTIME_EXTABLE_SORT
13 select CLONE_BACKWARDS
15 select CPU_PM if (SUSPEND || CPU_IDLE)
16 select DCACHE_WORD_ACCESS
17 select GENERIC_CLOCKEVENTS
18 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
20 select GENERIC_IRQ_PROBE
21 select GENERIC_IRQ_SHOW
22 select GENERIC_SCHED_CLOCK
23 select GENERIC_SMP_IDLE_THREAD
24 select GENERIC_STRNCPY_FROM_USER
25 select GENERIC_STRNLEN_USER
26 select GENERIC_TIME_VSYSCALL
27 select HARDIRQS_SW_RESEND
28 select HAVE_ARCH_JUMP_LABEL
30 select HAVE_ARCH_TRACEHOOK
31 select HAVE_DEBUG_BUGVERBOSE
32 select HAVE_DEBUG_KMEMLEAK
33 select HAVE_DMA_API_DEBUG
35 select HAVE_DMA_CONTIGUOUS
36 select HAVE_EFFICIENT_UNALIGNED_ACCESS
37 select HAVE_GENERIC_DMA_COHERENT
38 select HAVE_HW_BREAKPOINT if PERF_EVENTS
40 select HAVE_PATA_PLATFORM
41 select HAVE_PERF_EVENTS
43 select MODULES_USE_ELF_RELA
46 select OF_EARLY_FLATTREE
47 select PERF_USE_VMALLOC
52 select SYSCTL_EXCEPTION_TRACE
54 ARM 64-bit (AArch64) Linux support.
59 config ARCH_PHYS_ADDR_T_64BIT
68 config STACKTRACE_SUPPORT
71 config LOCKDEP_SUPPORT
74 config TRACE_IRQFLAGS_SUPPORT
77 config RWSEM_GENERIC_SPINLOCK
80 config GENERIC_HWEIGHT
86 config GENERIC_CALIBRATE_DELAY
92 config ARCH_DMA_ADDR_T_64BIT
95 config NEED_DMA_MAP_STATE
98 config NEED_SG_DMA_LENGTH
107 config KERNEL_MODE_NEON
110 source "init/Kconfig"
112 source "kernel/Kconfig.freezer"
114 menu "Platform selection"
117 bool "ARMv8 software model (Versatile Express)"
118 select ARCH_REQUIRE_GPIOLIB
119 select COMMON_CLK_VERSATILE
120 select POWER_RESET_VEXPRESS
121 select VEXPRESS_CONFIG
123 This enables support for the ARMv8 software model (Versatile
127 bool "AppliedMicro X-Gene SOC Family"
129 This enables support for AppliedMicro X-Gene SOC Family
140 menu "Kernel Features"
142 config ARM64_64K_PAGES
143 bool "Enable 64KB pages support"
145 This feature enables 64KB pages support (4KB by default)
146 allowing only two levels of page tables and faster TLB
147 look-up. AArch32 emulation is not available when this feature
150 config CPU_BIG_ENDIAN
151 bool "Build big-endian kernel"
153 Say Y if you plan on running a kernel in big-endian mode.
156 bool "Symmetric Multi-Processing"
158 This enables support for systems with more than one CPU. If
159 you say N here, the kernel will run on single and
160 multiprocessor machines, but will use only one CPU of a
161 multiprocessor machine. If you say Y here, the kernel will run
162 on many, but not all, single processor machines. On a single
163 processor machine, the kernel will run faster if you say N
166 If you don't know what to do here, say N.
169 int "Maximum number of CPUs (2-32)"
172 # These have to remain sorted largest to smallest
176 bool "Support for hot-pluggable CPUs"
179 Say Y here to experiment with turning CPUs off and on. CPUs
180 can be controlled through /sys/devices/system/cpu.
182 source kernel/Kconfig.preempt
188 config ARCH_HAS_HOLES_MEMORYMODEL
189 def_bool y if SPARSEMEM
191 config ARCH_SPARSEMEM_ENABLE
193 select SPARSEMEM_VMEMMAP_ENABLE
195 config ARCH_SPARSEMEM_DEFAULT
196 def_bool ARCH_SPARSEMEM_ENABLE
198 config ARCH_SELECT_MEMORY_MODEL
199 def_bool ARCH_SPARSEMEM_ENABLE
201 config HAVE_ARCH_PFN_VALID
202 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
204 config HW_PERF_EVENTS
205 bool "Enable hardware performance counter support for perf events"
206 depends on PERF_EVENTS
209 Enable hardware performance counter support for perf events. If
210 disabled, perf events will use software events only.
212 config SYS_SUPPORTS_HUGETLBFS
215 config ARCH_WANT_GENERAL_HUGETLB
218 config ARCH_WANT_HUGE_PMD_SHARE
219 def_bool y if !ARM64_64K_PAGES
221 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
231 bool "Xen guest support on ARM64 (EXPERIMENTAL)"
232 depends on ARM64 && OF
235 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
237 config FORCE_MAX_ZONEORDER
239 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
247 string "Default kernel command string"
250 Provide a set of default command-line options at build time by
251 entering them here. As a minimum, you should specify the the
252 root device (e.g. root=/dev/nfs).
255 bool "Always use the default kernel command string"
257 Always use the default kernel command string, even if the boot
258 loader passes other arguments to the kernel.
259 This is useful if you cannot or don't want to change the
260 command-line options your boot loader passes to the kernel.
264 menu "Userspace binary formats"
266 source "fs/Kconfig.binfmt"
269 bool "Kernel support for 32-bit EL0"
270 depends on !ARM64_64K_PAGES
271 select COMPAT_BINFMT_ELF
273 select OLD_SIGSUSPEND3
274 select COMPAT_OLD_SIGACTION
276 This option enables support for a 32-bit EL0 running under a 64-bit
277 kernel at EL1. AArch32-specific components such as system calls,
278 the user helper functions, VFP support and the ptrace interface are
279 handled appropriately by the kernel.
281 If you want to execute 32-bit userspace applications, say Y.
283 config SYSVIPC_COMPAT
285 depends on COMPAT && SYSVIPC
289 menu "Power management options"
291 source "kernel/power/Kconfig"
293 config ARCH_SUSPEND_POSSIBLE
296 config ARM64_CPU_SUSPEND
301 menu "CPU Power Management"
303 source "drivers/cpuidle/Kconfig"
309 source "drivers/Kconfig"
313 source "arch/arm64/kvm/Kconfig"
315 source "arch/arm64/Kconfig.debug"
317 source "security/Kconfig"
319 source "crypto/Kconfig"