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_PATA_PLATFORM
40 select HAVE_PERF_EVENTS
42 select MODULES_USE_ELF_RELA
45 select OF_EARLY_FLATTREE
46 select PERF_USE_VMALLOC
51 select SYSCTL_EXCEPTION_TRACE
53 ARM 64-bit (AArch64) Linux support.
58 config ARCH_PHYS_ADDR_T_64BIT
67 config STACKTRACE_SUPPORT
70 config LOCKDEP_SUPPORT
73 config TRACE_IRQFLAGS_SUPPORT
76 config RWSEM_GENERIC_SPINLOCK
79 config GENERIC_HWEIGHT
85 config GENERIC_CALIBRATE_DELAY
91 config ARCH_DMA_ADDR_T_64BIT
94 config NEED_DMA_MAP_STATE
97 config NEED_SG_DMA_LENGTH
106 config KERNEL_MODE_NEON
109 source "init/Kconfig"
111 source "kernel/Kconfig.freezer"
113 menu "Platform selection"
116 bool "ARMv8 software model (Versatile Express)"
117 select ARCH_REQUIRE_GPIOLIB
118 select COMMON_CLK_VERSATILE
119 select POWER_RESET_VEXPRESS
120 select VEXPRESS_CONFIG
122 This enables support for the ARMv8 software model (Versatile
126 bool "AppliedMicro X-Gene SOC Family"
128 This enables support for AppliedMicro X-Gene SOC Family
139 menu "Kernel Features"
141 config ARM64_64K_PAGES
142 bool "Enable 64KB pages support"
144 This feature enables 64KB pages support (4KB by default)
145 allowing only two levels of page tables and faster TLB
146 look-up. AArch32 emulation is not available when this feature
149 config CPU_BIG_ENDIAN
150 bool "Build big-endian kernel"
152 Say Y if you plan on running a kernel in big-endian mode.
155 bool "Symmetric Multi-Processing"
157 This enables support for systems with more than one CPU. If
158 you say N here, the kernel will run on single and
159 multiprocessor machines, but will use only one CPU of a
160 multiprocessor machine. If you say Y here, the kernel will run
161 on many, but not all, single processor machines. On a single
162 processor machine, the kernel will run faster if you say N
165 If you don't know what to do here, say N.
168 int "Maximum number of CPUs (2-32)"
171 # These have to remain sorted largest to smallest
175 bool "Support for hot-pluggable CPUs"
178 Say Y here to experiment with turning CPUs off and on. CPUs
179 can be controlled through /sys/devices/system/cpu.
181 source kernel/Kconfig.preempt
187 config ARCH_HAS_HOLES_MEMORYMODEL
188 def_bool y if SPARSEMEM
190 config ARCH_SPARSEMEM_ENABLE
192 select SPARSEMEM_VMEMMAP_ENABLE
194 config ARCH_SPARSEMEM_DEFAULT
195 def_bool ARCH_SPARSEMEM_ENABLE
197 config ARCH_SELECT_MEMORY_MODEL
198 def_bool ARCH_SPARSEMEM_ENABLE
200 config HAVE_ARCH_PFN_VALID
201 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
203 config HW_PERF_EVENTS
204 bool "Enable hardware performance counter support for perf events"
205 depends on PERF_EVENTS
208 Enable hardware performance counter support for perf events. If
209 disabled, perf events will use software events only.
211 config SYS_SUPPORTS_HUGETLBFS
214 config ARCH_WANT_GENERAL_HUGETLB
217 config ARCH_WANT_HUGE_PMD_SHARE
218 def_bool y if !ARM64_64K_PAGES
220 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
230 bool "Xen guest support on ARM64 (EXPERIMENTAL)"
231 depends on ARM64 && OF
234 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
236 config FORCE_MAX_ZONEORDER
238 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
246 string "Default kernel command string"
249 Provide a set of default command-line options at build time by
250 entering them here. As a minimum, you should specify the the
251 root device (e.g. root=/dev/nfs).
254 bool "Always use the default kernel command string"
256 Always use the default kernel command string, even if the boot
257 loader passes other arguments to the kernel.
258 This is useful if you cannot or don't want to change the
259 command-line options your boot loader passes to the kernel.
263 menu "Userspace binary formats"
265 source "fs/Kconfig.binfmt"
268 bool "Kernel support for 32-bit EL0"
269 depends on !ARM64_64K_PAGES
270 select COMPAT_BINFMT_ELF
272 select OLD_SIGSUSPEND3
273 select COMPAT_OLD_SIGACTION
275 This option enables support for a 32-bit EL0 running under a 64-bit
276 kernel at EL1. AArch32-specific components such as system calls,
277 the user helper functions, VFP support and the ptrace interface are
278 handled appropriately by the kernel.
280 If you want to execute 32-bit userspace applications, say Y.
282 config SYSVIPC_COMPAT
284 depends on COMPAT && SYSVIPC
288 menu "Power management options"
290 source "kernel/power/Kconfig"
292 config ARCH_SUSPEND_POSSIBLE
295 config ARM64_CPU_SUSPEND
300 menu "CPU Power Management"
302 source "drivers/cpuidle/Kconfig"
308 source "drivers/Kconfig"
312 source "arch/arm64/kvm/Kconfig"
314 source "arch/arm64/Kconfig.debug"
316 source "security/Kconfig"
318 source "crypto/Kconfig"