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
19 select GENERIC_CPU_AUTOPROBE
20 select GENERIC_EARLY_IOREMAP
22 select GENERIC_IRQ_PROBE
23 select GENERIC_IRQ_SHOW
24 select GENERIC_SCHED_CLOCK
25 select GENERIC_SMP_IDLE_THREAD
26 select GENERIC_STRNCPY_FROM_USER
27 select GENERIC_STRNLEN_USER
28 select GENERIC_TIME_VSYSCALL
29 select HARDIRQS_SW_RESEND
30 select HAVE_ARCH_JUMP_LABEL
32 select HAVE_ARCH_TRACEHOOK
33 select HAVE_C_RECORDMCOUNT
34 select HAVE_DEBUG_BUGVERBOSE
35 select HAVE_DEBUG_KMEMLEAK
36 select HAVE_DMA_API_DEBUG
38 select HAVE_DMA_CONTIGUOUS
39 select HAVE_DYNAMIC_FTRACE
40 select HAVE_EFFICIENT_UNALIGNED_ACCESS
41 select HAVE_FTRACE_MCOUNT_RECORD
42 select HAVE_FUNCTION_TRACER
43 select HAVE_FUNCTION_GRAPH_TRACER
44 select HAVE_GENERIC_DMA_COHERENT
45 select HAVE_HW_BREAKPOINT if PERF_EVENTS
47 select HAVE_PATA_PLATFORM
48 select HAVE_PERF_EVENTS
50 select HAVE_PERF_USER_STACK_DUMP
51 select HAVE_SYSCALL_TRACEPOINTS
53 select MODULES_USE_ELF_RELA
56 select OF_EARLY_FLATTREE
57 select OF_RESERVED_MEM
58 select PERF_USE_VMALLOC
63 select SYSCTL_EXCEPTION_TRACE
65 ARM 64-bit (AArch64) Linux support.
70 config ARCH_PHYS_ADDR_T_64BIT
79 config STACKTRACE_SUPPORT
82 config LOCKDEP_SUPPORT
85 config TRACE_IRQFLAGS_SUPPORT
88 config RWSEM_XCHGADD_ALGORITHM
91 config GENERIC_HWEIGHT
97 config GENERIC_CALIBRATE_DELAY
103 config ARCH_DMA_ADDR_T_64BIT
106 config NEED_DMA_MAP_STATE
109 config NEED_SG_DMA_LENGTH
118 config KERNEL_MODE_NEON
121 source "init/Kconfig"
123 source "kernel/Kconfig.freezer"
125 menu "Platform selection"
128 bool "ARMv8 software model (Versatile Express)"
129 select ARCH_REQUIRE_GPIOLIB
130 select COMMON_CLK_VERSATILE
131 select POWER_RESET_VEXPRESS
132 select VEXPRESS_CONFIG
134 This enables support for the ARMv8 software model (Versatile
138 bool "AppliedMicro X-Gene SOC Family"
140 This enables support for AppliedMicro X-Gene SOC Family
151 menu "Kernel Features"
153 config ARM64_64K_PAGES
154 bool "Enable 64KB pages support"
156 This feature enables 64KB pages support (4KB by default)
157 allowing only two levels of page tables and faster TLB
158 look-up. AArch32 emulation is not available when this feature
161 config CPU_BIG_ENDIAN
162 bool "Build big-endian kernel"
164 Say Y if you plan on running a kernel in big-endian mode.
167 bool "Symmetric Multi-Processing"
169 This enables support for systems with more than one CPU. If
170 you say N here, the kernel will run on single and
171 multiprocessor machines, but will use only one CPU of a
172 multiprocessor machine. If you say Y here, the kernel will run
173 on many, but not all, single processor machines. On a single
174 processor machine, the kernel will run faster if you say N
177 If you don't know what to do here, say N.
180 bool "Multi-core scheduler support"
183 Multi-core scheduler support improves the CPU scheduler's decision
184 making when dealing with multi-core CPU chips at a cost of slightly
185 increased overhead in some places. If unsure say N here.
188 bool "SMT scheduler support"
191 Improves the CPU scheduler's decision making when dealing with
192 MultiThreading at a cost of slightly increased overhead in some
193 places. If unsure say N here.
196 int "Maximum number of CPUs (2-32)"
199 # These have to remain sorted largest to smallest
203 bool "Support for hot-pluggable CPUs"
206 Say Y here to experiment with turning CPUs off and on. CPUs
207 can be controlled through /sys/devices/system/cpu.
209 source kernel/Kconfig.preempt
215 config ARCH_HAS_HOLES_MEMORYMODEL
216 def_bool y if SPARSEMEM
218 config ARCH_SPARSEMEM_ENABLE
220 select SPARSEMEM_VMEMMAP_ENABLE
222 config ARCH_SPARSEMEM_DEFAULT
223 def_bool ARCH_SPARSEMEM_ENABLE
225 config ARCH_SELECT_MEMORY_MODEL
226 def_bool ARCH_SPARSEMEM_ENABLE
228 config HAVE_ARCH_PFN_VALID
229 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
231 config HW_PERF_EVENTS
232 bool "Enable hardware performance counter support for perf events"
233 depends on PERF_EVENTS
236 Enable hardware performance counter support for perf events. If
237 disabled, perf events will use software events only.
239 config SYS_SUPPORTS_HUGETLBFS
242 config ARCH_WANT_GENERAL_HUGETLB
245 config ARCH_WANT_HUGE_PMD_SHARE
246 def_bool y if !ARM64_64K_PAGES
248 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
251 config ARCH_HAS_CACHE_LINE_SIZE
261 bool "Xen guest support on ARM64 (EXPERIMENTAL)"
262 depends on ARM64 && OF
265 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
267 config FORCE_MAX_ZONEORDER
269 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
277 string "Default kernel command string"
280 Provide a set of default command-line options at build time by
281 entering them here. As a minimum, you should specify the the
282 root device (e.g. root=/dev/nfs).
285 bool "Always use the default kernel command string"
287 Always use the default kernel command string, even if the boot
288 loader passes other arguments to the kernel.
289 This is useful if you cannot or don't want to change the
290 command-line options your boot loader passes to the kernel.
294 menu "Userspace binary formats"
296 source "fs/Kconfig.binfmt"
299 bool "Kernel support for 32-bit EL0"
300 depends on !ARM64_64K_PAGES
301 select COMPAT_BINFMT_ELF
303 select OLD_SIGSUSPEND3
304 select COMPAT_OLD_SIGACTION
306 This option enables support for a 32-bit EL0 running under a 64-bit
307 kernel at EL1. AArch32-specific components such as system calls,
308 the user helper functions, VFP support and the ptrace interface are
309 handled appropriately by the kernel.
311 If you want to execute 32-bit userspace applications, say Y.
313 config SYSVIPC_COMPAT
315 depends on COMPAT && SYSVIPC
319 menu "Power management options"
321 source "kernel/power/Kconfig"
323 config ARCH_SUSPEND_POSSIBLE
326 config ARM64_CPU_SUSPEND
331 menu "CPU Power Management"
333 source "drivers/cpuidle/Kconfig"
335 source "drivers/cpufreq/Kconfig"
341 source "drivers/Kconfig"
345 source "arch/arm64/kvm/Kconfig"
347 source "arch/arm64/Kconfig.debug"
349 source "security/Kconfig"
351 source "crypto/Kconfig"
353 source "arch/arm64/crypto/Kconfig"