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
29 select HAVE_ARCH_TRACEHOOK
30 select HAVE_DEBUG_BUGVERBOSE
31 select HAVE_DEBUG_KMEMLEAK
32 select HAVE_DMA_API_DEBUG
34 select HAVE_DMA_CONTIGUOUS
35 select HAVE_EFFICIENT_UNALIGNED_ACCESS
36 select HAVE_GENERIC_DMA_COHERENT
37 select HAVE_HW_BREAKPOINT if PERF_EVENTS
39 select HAVE_PERF_EVENTS
41 select MODULES_USE_ELF_RELA
44 select OF_EARLY_FLATTREE
45 select PERF_USE_VMALLOC
50 select SYSCTL_EXCEPTION_TRACE
52 ARM 64-bit (AArch64) Linux support.
57 config ARCH_PHYS_ADDR_T_64BIT
66 config STACKTRACE_SUPPORT
69 config LOCKDEP_SUPPORT
72 config TRACE_IRQFLAGS_SUPPORT
75 config RWSEM_GENERIC_SPINLOCK
78 config GENERIC_HWEIGHT
84 config GENERIC_CALIBRATE_DELAY
90 config ARCH_DMA_ADDR_T_64BIT
93 config NEED_DMA_MAP_STATE
96 config NEED_SG_DMA_LENGTH
105 config KERNEL_MODE_NEON
108 source "init/Kconfig"
110 source "kernel/Kconfig.freezer"
112 menu "Platform selection"
115 bool "ARMv8 software model (Versatile Express)"
116 select ARCH_REQUIRE_GPIOLIB
117 select COMMON_CLK_VERSATILE
118 select POWER_RESET_VEXPRESS
119 select VEXPRESS_CONFIG
121 This enables support for the ARMv8 software model (Versatile
125 bool "AppliedMicro X-Gene SOC Family"
127 This enables support for AppliedMicro X-Gene SOC Family
138 menu "Kernel Features"
140 config ARM64_64K_PAGES
141 bool "Enable 64KB pages support"
143 This feature enables 64KB pages support (4KB by default)
144 allowing only two levels of page tables and faster TLB
145 look-up. AArch32 emulation is not available when this feature
148 config CPU_BIG_ENDIAN
149 bool "Build big-endian kernel"
151 Say Y if you plan on running a kernel in big-endian mode.
154 bool "Symmetric Multi-Processing"
156 This enables support for systems with more than one CPU. If
157 you say N here, the kernel will run on single and
158 multiprocessor machines, but will use only one CPU of a
159 multiprocessor machine. If you say Y here, the kernel will run
160 on many, but not all, single processor machines. On a single
161 processor machine, the kernel will run faster if you say N
164 If you don't know what to do here, say N.
167 int "Maximum number of CPUs (2-32)"
170 # These have to remain sorted largest to smallest
174 bool "Support for hot-pluggable CPUs"
177 Say Y here to experiment with turning CPUs off and on. CPUs
178 can be controlled through /sys/devices/system/cpu.
180 source kernel/Kconfig.preempt
186 config ARCH_HAS_HOLES_MEMORYMODEL
187 def_bool y if SPARSEMEM
189 config ARCH_SPARSEMEM_ENABLE
191 select SPARSEMEM_VMEMMAP_ENABLE
193 config ARCH_SPARSEMEM_DEFAULT
194 def_bool ARCH_SPARSEMEM_ENABLE
196 config ARCH_SELECT_MEMORY_MODEL
197 def_bool ARCH_SPARSEMEM_ENABLE
199 config HAVE_ARCH_PFN_VALID
200 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
202 config HW_PERF_EVENTS
203 bool "Enable hardware performance counter support for perf events"
204 depends on PERF_EVENTS
207 Enable hardware performance counter support for perf events. If
208 disabled, perf events will use software events only.
210 config SYS_SUPPORTS_HUGETLBFS
213 config ARCH_WANT_GENERAL_HUGETLB
216 config ARCH_WANT_HUGE_PMD_SHARE
217 def_bool y if !ARM64_64K_PAGES
219 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
229 bool "Xen guest support on ARM64 (EXPERIMENTAL)"
230 depends on ARM64 && OF
233 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
235 config FORCE_MAX_ZONEORDER
237 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
245 string "Default kernel command string"
248 Provide a set of default command-line options at build time by
249 entering them here. As a minimum, you should specify the the
250 root device (e.g. root=/dev/nfs).
253 bool "Always use the default kernel command string"
255 Always use the default kernel command string, even if the boot
256 loader passes other arguments to the kernel.
257 This is useful if you cannot or don't want to change the
258 command-line options your boot loader passes to the kernel.
262 menu "Userspace binary formats"
264 source "fs/Kconfig.binfmt"
267 bool "Kernel support for 32-bit EL0"
268 depends on !ARM64_64K_PAGES
269 select COMPAT_BINFMT_ELF
271 select OLD_SIGSUSPEND3
272 select COMPAT_OLD_SIGACTION
274 This option enables support for a 32-bit EL0 running under a 64-bit
275 kernel at EL1. AArch32-specific components such as system calls,
276 the user helper functions, VFP support and the ptrace interface are
277 handled appropriately by the kernel.
279 If you want to execute 32-bit userspace applications, say Y.
281 config SYSVIPC_COMPAT
283 depends on COMPAT && SYSVIPC
287 menu "Power management options"
289 source "kernel/power/Kconfig"
291 config ARCH_SUSPEND_POSSIBLE
294 config ARM64_CPU_SUSPEND
299 menu "CPU Power Management"
301 source "drivers/cpuidle/Kconfig"
307 source "drivers/Kconfig"
311 source "arch/arm64/kvm/Kconfig"
313 source "arch/arm64/Kconfig.debug"
315 source "security/Kconfig"
317 source "crypto/Kconfig"