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"
147 This enables support for systems with more than one CPU. If
148 you say N here, the kernel will run on single and
149 multiprocessor machines, but will use only one CPU of a
150 multiprocessor machine. If you say Y here, the kernel will run
151 on many, but not all, single processor machines. On a single
152 processor machine, the kernel will run faster if you say N
155 If you don't know what to do here, say N.
158 int "Maximum number of CPUs (2-32)"
161 # These have to remain sorted largest to smallest
165 bool "Support for hot-pluggable CPUs"
168 Say Y here to experiment with turning CPUs off and on. CPUs
169 can be controlled through /sys/devices/system/cpu.
171 source kernel/Kconfig.preempt
177 config ARCH_HAS_HOLES_MEMORYMODEL
178 def_bool y if SPARSEMEM
180 config ARCH_SPARSEMEM_ENABLE
182 select SPARSEMEM_VMEMMAP_ENABLE
184 config ARCH_SPARSEMEM_DEFAULT
185 def_bool ARCH_SPARSEMEM_ENABLE
187 config ARCH_SELECT_MEMORY_MODEL
188 def_bool ARCH_SPARSEMEM_ENABLE
190 config HAVE_ARCH_PFN_VALID
191 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
193 config HW_PERF_EVENTS
194 bool "Enable hardware performance counter support for perf events"
195 depends on PERF_EVENTS
198 Enable hardware performance counter support for perf events. If
199 disabled, perf events will use software events only.
201 config SYS_SUPPORTS_HUGETLBFS
204 config ARCH_WANT_GENERAL_HUGETLB
207 config ARCH_WANT_HUGE_PMD_SHARE
208 def_bool y if !ARM64_64K_PAGES
210 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
220 bool "Xen guest support on ARM64 (EXPERIMENTAL)"
221 depends on ARM64 && OF
224 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
226 config FORCE_MAX_ZONEORDER
228 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
236 string "Default kernel command string"
239 Provide a set of default command-line options at build time by
240 entering them here. As a minimum, you should specify the the
241 root device (e.g. root=/dev/nfs).
244 bool "Always use the default kernel command string"
246 Always use the default kernel command string, even if the boot
247 loader passes other arguments to the kernel.
248 This is useful if you cannot or don't want to change the
249 command-line options your boot loader passes to the kernel.
253 menu "Userspace binary formats"
255 source "fs/Kconfig.binfmt"
258 bool "Kernel support for 32-bit EL0"
259 depends on !ARM64_64K_PAGES
260 select COMPAT_BINFMT_ELF
262 select OLD_SIGSUSPEND3
263 select COMPAT_OLD_SIGACTION
265 This option enables support for a 32-bit EL0 running under a 64-bit
266 kernel at EL1. AArch32-specific components such as system calls,
267 the user helper functions, VFP support and the ptrace interface are
268 handled appropriately by the kernel.
270 If you want to execute 32-bit userspace applications, say Y.
272 config SYSVIPC_COMPAT
274 depends on COMPAT && SYSVIPC
280 source "drivers/Kconfig"
284 source "arch/arm64/kvm/Kconfig"
286 source "arch/arm64/Kconfig.debug"
288 source "security/Kconfig"
290 source "crypto/Kconfig"