3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
4 select ARCH_USE_CMPXCHG_LOCKREF
5 select ARCH_WANT_OPTIONAL_GPIOLIB
6 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
7 select ARCH_WANT_FRAME_POINTERS
11 select BUILDTIME_EXTABLE_SORT
12 select CLONE_BACKWARDS
14 select DCACHE_WORD_ACCESS
15 select GENERIC_CLOCKEVENTS
17 select GENERIC_IRQ_PROBE
18 select GENERIC_IRQ_SHOW
19 select GENERIC_SCHED_CLOCK
20 select GENERIC_SMP_IDLE_THREAD
21 select GENERIC_STRNCPY_FROM_USER
22 select GENERIC_STRNLEN_USER
23 select GENERIC_TIME_VSYSCALL
24 select HARDIRQS_SW_RESEND
25 select HAVE_ARCH_TRACEHOOK
26 select HAVE_DEBUG_BUGVERBOSE
27 select HAVE_DEBUG_KMEMLEAK
28 select HAVE_DMA_API_DEBUG
30 select HAVE_DMA_CONTIGUOUS
31 select HAVE_EFFICIENT_UNALIGNED_ACCESS
32 select HAVE_GENERIC_DMA_COHERENT
33 select HAVE_HW_BREAKPOINT if PERF_EVENTS
35 select HAVE_PERF_EVENTS
37 select MODULES_USE_ELF_RELA
40 select OF_EARLY_FLATTREE
41 select PERF_USE_VMALLOC
46 select SYSCTL_EXCEPTION_TRACE
48 ARM 64-bit (AArch64) Linux support.
53 config ARCH_PHYS_ADDR_T_64BIT
62 config STACKTRACE_SUPPORT
65 config LOCKDEP_SUPPORT
68 config TRACE_IRQFLAGS_SUPPORT
71 config RWSEM_GENERIC_SPINLOCK
74 config GENERIC_HWEIGHT
80 config GENERIC_CALIBRATE_DELAY
86 config ARCH_DMA_ADDR_T_64BIT
89 config NEED_DMA_MAP_STATE
92 config NEED_SG_DMA_LENGTH
101 config KERNEL_MODE_NEON
104 source "init/Kconfig"
106 source "kernel/Kconfig.freezer"
108 menu "Platform selection"
111 bool "ARMv8 software model (Versatile Express)"
112 select ARCH_REQUIRE_GPIOLIB
113 select COMMON_CLK_VERSATILE
114 select POWER_RESET_VEXPRESS
115 select VEXPRESS_CONFIG
117 This enables support for the ARMv8 software model (Versatile
121 bool "AppliedMicro X-Gene SOC Family"
123 This enables support for AppliedMicro X-Gene SOC Family
134 menu "Kernel Features"
136 config ARM64_64K_PAGES
137 bool "Enable 64KB pages support"
139 This feature enables 64KB pages support (4KB by default)
140 allowing only two levels of page tables and faster TLB
141 look-up. AArch32 emulation is not available when this feature
144 config CPU_BIG_ENDIAN
145 bool "Build big-endian kernel"
147 Say Y if you plan on running a kernel in big-endian mode.
150 bool "Symmetric Multi-Processing"
152 This enables support for systems with more than one CPU. If
153 you say N here, the kernel will run on single and
154 multiprocessor machines, but will use only one CPU of a
155 multiprocessor machine. If you say Y here, the kernel will run
156 on many, but not all, single processor machines. On a single
157 processor machine, the kernel will run faster if you say N
160 If you don't know what to do here, say N.
163 int "Maximum number of CPUs (2-32)"
166 # These have to remain sorted largest to smallest
170 bool "Support for hot-pluggable CPUs"
173 Say Y here to experiment with turning CPUs off and on. CPUs
174 can be controlled through /sys/devices/system/cpu.
176 source kernel/Kconfig.preempt
182 config ARCH_HAS_HOLES_MEMORYMODEL
183 def_bool y if SPARSEMEM
185 config ARCH_SPARSEMEM_ENABLE
187 select SPARSEMEM_VMEMMAP_ENABLE
189 config ARCH_SPARSEMEM_DEFAULT
190 def_bool ARCH_SPARSEMEM_ENABLE
192 config ARCH_SELECT_MEMORY_MODEL
193 def_bool ARCH_SPARSEMEM_ENABLE
195 config HAVE_ARCH_PFN_VALID
196 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
198 config HW_PERF_EVENTS
199 bool "Enable hardware performance counter support for perf events"
200 depends on PERF_EVENTS
203 Enable hardware performance counter support for perf events. If
204 disabled, perf events will use software events only.
206 config SYS_SUPPORTS_HUGETLBFS
209 config ARCH_WANT_GENERAL_HUGETLB
212 config ARCH_WANT_HUGE_PMD_SHARE
213 def_bool y if !ARM64_64K_PAGES
215 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
225 bool "Xen guest support on ARM64 (EXPERIMENTAL)"
226 depends on ARM64 && OF
229 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
231 config FORCE_MAX_ZONEORDER
233 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
241 string "Default kernel command string"
244 Provide a set of default command-line options at build time by
245 entering them here. As a minimum, you should specify the the
246 root device (e.g. root=/dev/nfs).
249 bool "Always use the default kernel command string"
251 Always use the default kernel command string, even if the boot
252 loader passes other arguments to the kernel.
253 This is useful if you cannot or don't want to change the
254 command-line options your boot loader passes to the kernel.
258 menu "Userspace binary formats"
260 source "fs/Kconfig.binfmt"
263 bool "Kernel support for 32-bit EL0"
264 depends on !ARM64_64K_PAGES
265 select COMPAT_BINFMT_ELF
267 select OLD_SIGSUSPEND3
268 select COMPAT_OLD_SIGACTION
270 This option enables support for a 32-bit EL0 running under a 64-bit
271 kernel at EL1. AArch32-specific components such as system calls,
272 the user helper functions, VFP support and the ptrace interface are
273 handled appropriately by the kernel.
275 If you want to execute 32-bit userspace applications, say Y.
277 config SYSVIPC_COMPAT
279 depends on COMPAT && SYSVIPC
285 source "drivers/Kconfig"
289 source "arch/arm64/kvm/Kconfig"
291 source "arch/arm64/Kconfig.debug"
293 source "security/Kconfig"
295 source "crypto/Kconfig"