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_TIME_VSYSCALL
21 select HARDIRQS_SW_RESEND
22 select HAVE_ARCH_TRACEHOOK
23 select HAVE_DEBUG_BUGVERBOSE
24 select HAVE_DEBUG_KMEMLEAK
25 select HAVE_DMA_API_DEBUG
27 select HAVE_GENERIC_DMA_COHERENT
28 select HAVE_HW_BREAKPOINT if PERF_EVENTS
30 select HAVE_PERF_EVENTS
32 select MODULES_USE_ELF_RELA
35 select OF_EARLY_FLATTREE
36 select PERF_USE_VMALLOC
41 select SYSCTL_EXCEPTION_TRACE
43 ARM 64-bit (AArch64) Linux support.
48 config ARCH_PHYS_ADDR_T_64BIT
57 config STACKTRACE_SUPPORT
60 config LOCKDEP_SUPPORT
63 config TRACE_IRQFLAGS_SUPPORT
66 config RWSEM_GENERIC_SPINLOCK
69 config GENERIC_HWEIGHT
75 config GENERIC_CALIBRATE_DELAY
81 config ARCH_DMA_ADDR_T_64BIT
84 config NEED_DMA_MAP_STATE
87 config NEED_SG_DMA_LENGTH
96 config KERNEL_MODE_NEON
101 source "kernel/Kconfig.freezer"
103 menu "Platform selection"
106 bool "ARMv8 software model (Versatile Express)"
107 select ARCH_REQUIRE_GPIOLIB
108 select COMMON_CLK_VERSATILE
109 select POWER_RESET_VEXPRESS
110 select VEXPRESS_CONFIG
112 This enables support for the ARMv8 software model (Versatile
116 bool "AppliedMicro X-Gene SOC Family"
118 This enables support for AppliedMicro X-Gene SOC Family
129 menu "Kernel Features"
131 config ARM64_64K_PAGES
132 bool "Enable 64KB pages support"
134 This feature enables 64KB pages support (4KB by default)
135 allowing only two levels of page tables and faster TLB
136 look-up. AArch32 emulation is not available when this feature
139 config CPU_BIG_ENDIAN
140 bool "Build big-endian kernel"
142 Say Y if you plan on running a kernel in big-endian mode.
145 bool "Symmetric Multi-Processing"
146 select USE_GENERIC_SMP_HELPERS
148 This enables support for systems with more than one CPU. If
149 you say N here, the kernel will run on single and
150 multiprocessor machines, but will use only one CPU of a
151 multiprocessor machine. If you say Y here, the kernel will run
152 on many, but not all, single processor machines. On a single
153 processor machine, the kernel will run faster if you say N
156 If you don't know what to do here, say N.
159 int "Maximum number of CPUs (2-32)"
162 # These have to remain sorted largest to smallest
163 default "8" if ARCH_XGENE
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
225 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
227 config FORCE_MAX_ZONEORDER
229 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
237 string "Default kernel command string"
240 Provide a set of default command-line options at build time by
241 entering them here. As a minimum, you should specify the the
242 root device (e.g. root=/dev/nfs).
245 bool "Always use the default kernel command string"
247 Always use the default kernel command string, even if the boot
248 loader passes other arguments to the kernel.
249 This is useful if you cannot or don't want to change the
250 command-line options your boot loader passes to the kernel.
254 menu "Userspace binary formats"
256 source "fs/Kconfig.binfmt"
259 bool "Kernel support for 32-bit EL0"
260 depends on !ARM64_64K_PAGES
261 select COMPAT_BINFMT_ELF
263 select OLD_SIGSUSPEND3
264 select COMPAT_OLD_SIGACTION
266 This option enables support for a 32-bit EL0 running under a 64-bit
267 kernel at EL1. AArch32-specific components such as system calls,
268 the user helper functions, VFP support and the ptrace interface are
269 handled appropriately by the kernel.
271 If you want to execute 32-bit userspace applications, say Y.
273 config SYSVIPC_COMPAT
275 depends on COMPAT && SYSVIPC
281 source "drivers/Kconfig"
285 source "arch/arm64/kvm/Kconfig"
287 source "arch/arm64/Kconfig.debug"
289 source "security/Kconfig"
291 source "crypto/Kconfig"