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 GENERIC_CLOCKEVENTS
16 select GENERIC_IRQ_PROBE
17 select GENERIC_IRQ_SHOW
18 select GENERIC_SCHED_CLOCK
19 select GENERIC_SMP_IDLE_THREAD
20 select GENERIC_STRNCPY_FROM_USER
21 select GENERIC_STRNLEN_USER
22 select GENERIC_TIME_VSYSCALL
23 select HARDIRQS_SW_RESEND
24 select HAVE_ARCH_TRACEHOOK
25 select HAVE_DEBUG_BUGVERBOSE
26 select HAVE_DEBUG_KMEMLEAK
27 select HAVE_DMA_API_DEBUG
29 select HAVE_GENERIC_DMA_COHERENT
30 select HAVE_HW_BREAKPOINT if PERF_EVENTS
32 select HAVE_PERF_EVENTS
34 select MODULES_USE_ELF_RELA
37 select OF_EARLY_FLATTREE
38 select PERF_USE_VMALLOC
43 select SYSCTL_EXCEPTION_TRACE
45 ARM 64-bit (AArch64) Linux support.
50 config ARCH_PHYS_ADDR_T_64BIT
59 config STACKTRACE_SUPPORT
62 config LOCKDEP_SUPPORT
65 config TRACE_IRQFLAGS_SUPPORT
68 config RWSEM_GENERIC_SPINLOCK
71 config GENERIC_HWEIGHT
77 config GENERIC_CALIBRATE_DELAY
83 config ARCH_DMA_ADDR_T_64BIT
86 config NEED_DMA_MAP_STATE
89 config NEED_SG_DMA_LENGTH
98 config KERNEL_MODE_NEON
101 source "init/Kconfig"
103 source "kernel/Kconfig.freezer"
105 menu "Platform selection"
108 bool "ARMv8 software model (Versatile Express)"
109 select ARCH_REQUIRE_GPIOLIB
110 select COMMON_CLK_VERSATILE
111 select POWER_RESET_VEXPRESS
112 select VEXPRESS_CONFIG
114 This enables support for the ARMv8 software model (Versatile
118 bool "AppliedMicro X-Gene SOC Family"
120 This enables support for AppliedMicro X-Gene SOC Family
131 menu "Kernel Features"
133 config ARM64_64K_PAGES
134 bool "Enable 64KB pages support"
136 This feature enables 64KB pages support (4KB by default)
137 allowing only two levels of page tables and faster TLB
138 look-up. AArch32 emulation is not available when this feature
141 config CPU_BIG_ENDIAN
142 bool "Build big-endian kernel"
144 Say Y if you plan on running a kernel in big-endian mode.
147 bool "Symmetric Multi-Processing"
149 This enables support for systems with more than one CPU. If
150 you say N here, the kernel will run on single and
151 multiprocessor machines, but will use only one CPU of a
152 multiprocessor machine. If you say Y here, the kernel will run
153 on many, but not all, single processor machines. On a single
154 processor machine, the kernel will run faster if you say N
157 If you don't know what to do here, say N.
160 int "Maximum number of CPUs (2-32)"
163 # These have to remain sorted largest to smallest
167 bool "Support for hot-pluggable CPUs"
170 Say Y here to experiment with turning CPUs off and on. CPUs
171 can be controlled through /sys/devices/system/cpu.
173 source kernel/Kconfig.preempt
179 config ARCH_HAS_HOLES_MEMORYMODEL
180 def_bool y if SPARSEMEM
182 config ARCH_SPARSEMEM_ENABLE
184 select SPARSEMEM_VMEMMAP_ENABLE
186 config ARCH_SPARSEMEM_DEFAULT
187 def_bool ARCH_SPARSEMEM_ENABLE
189 config ARCH_SELECT_MEMORY_MODEL
190 def_bool ARCH_SPARSEMEM_ENABLE
192 config HAVE_ARCH_PFN_VALID
193 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
195 config HW_PERF_EVENTS
196 bool "Enable hardware performance counter support for perf events"
197 depends on PERF_EVENTS
200 Enable hardware performance counter support for perf events. If
201 disabled, perf events will use software events only.
203 config SYS_SUPPORTS_HUGETLBFS
206 config ARCH_WANT_GENERAL_HUGETLB
209 config ARCH_WANT_HUGE_PMD_SHARE
210 def_bool y if !ARM64_64K_PAGES
212 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
222 bool "Xen guest support on ARM64 (EXPERIMENTAL)"
223 depends on ARM64 && OF
226 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
228 config FORCE_MAX_ZONEORDER
230 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
238 string "Default kernel command string"
241 Provide a set of default command-line options at build time by
242 entering them here. As a minimum, you should specify the the
243 root device (e.g. root=/dev/nfs).
246 bool "Always use the default kernel command string"
248 Always use the default kernel command string, even if the boot
249 loader passes other arguments to the kernel.
250 This is useful if you cannot or don't want to change the
251 command-line options your boot loader passes to the kernel.
255 menu "Userspace binary formats"
257 source "fs/Kconfig.binfmt"
260 bool "Kernel support for 32-bit EL0"
261 depends on !ARM64_64K_PAGES
262 select COMPAT_BINFMT_ELF
264 select OLD_SIGSUSPEND3
265 select COMPAT_OLD_SIGACTION
267 This option enables support for a 32-bit EL0 running under a 64-bit
268 kernel at EL1. AArch32-specific components such as system calls,
269 the user helper functions, VFP support and the ptrace interface are
270 handled appropriately by the kernel.
272 If you want to execute 32-bit userspace applications, say Y.
274 config SYSVIPC_COMPAT
276 depends on COMPAT && SYSVIPC
282 source "drivers/Kconfig"
286 source "arch/arm64/kvm/Kconfig"
288 source "arch/arm64/Kconfig.debug"
290 source "security/Kconfig"
292 source "crypto/Kconfig"