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
16 select GENERIC_EARLY_IOREMAP
18 select GENERIC_IRQ_PROBE
19 select GENERIC_IRQ_SHOW
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
26 select HAVE_ARCH_TRACEHOOK
27 select HAVE_DEBUG_BUGVERBOSE
28 select HAVE_DEBUG_KMEMLEAK
29 select HAVE_DMA_API_DEBUG
31 select HAVE_EFFICIENT_UNALIGNED_ACCESS
32 select HAVE_GENERIC_DMA_COHERENT
33 select HAVE_GENERIC_HARDIRQS
34 select HAVE_HW_BREAKPOINT if PERF_EVENTS
36 select HAVE_PATA_PLATFORM
37 select HAVE_PERF_EVENTS
39 select MODULES_USE_ELF_RELA
42 select OF_EARLY_FLATTREE
43 select PERF_USE_VMALLOC
48 select SYSCTL_EXCEPTION_TRACE
50 ARM 64-bit (AArch64) Linux support.
55 config ARCH_PHYS_ADDR_T_64BIT
64 config STACKTRACE_SUPPORT
67 config LOCKDEP_SUPPORT
70 config TRACE_IRQFLAGS_SUPPORT
73 config RWSEM_XCHGADD_ALGORITHM
76 config GENERIC_HWEIGHT
82 config GENERIC_CALIBRATE_DELAY
88 config ARCH_DMA_ADDR_T_64BIT
91 config NEED_DMA_MAP_STATE
94 config NEED_SG_DMA_LENGTH
103 config FIX_EARLYCON_MEM
106 source "init/Kconfig"
108 source "kernel/Kconfig.freezer"
110 menu "Platform selection"
113 bool "ARMv8 software model (Versatile Express)"
114 select ARCH_REQUIRE_GPIOLIB
115 select COMMON_CLK_VERSATILE
116 select POWER_RESET_VEXPRESS
117 select VEXPRESS_CONFIG
119 This enables support for the ARMv8 software model (Versatile
123 bool "AppliedMicro X-Gene SOC Family"
125 This enables support for AppliedMicro X-Gene SOC Family
136 menu "Kernel Features"
138 config ARM64_64K_PAGES
139 bool "Enable 64KB pages support"
141 This feature enables 64KB pages support (4KB by default)
142 allowing only two levels of page tables and faster TLB
143 look-up. AArch32 emulation is not available when this feature
147 bool "Symmetric Multi-Processing"
148 select USE_GENERIC_SMP_HELPERS
150 This enables support for systems with more than one CPU. If
151 you say N here, the kernel will run on single and
152 multiprocessor machines, but will use only one CPU of a
153 multiprocessor machine. If you say Y here, the kernel will run
154 on many, but not all, single processor machines. On a single
155 processor machine, the kernel will run faster if you say N
158 If you don't know what to do here, say N.
161 int "Maximum number of CPUs (2-32)"
164 # These have to remain sorted largest to smallest
168 bool "Support for hot-pluggable CPUs"
171 Say Y here to experiment with turning CPUs off and on. CPUs
172 can be controlled through /sys/devices/system/cpu.
174 source kernel/Kconfig.preempt
180 config ARCH_HAS_HOLES_MEMORYMODEL
181 def_bool y if SPARSEMEM
183 config ARCH_SPARSEMEM_ENABLE
185 select SPARSEMEM_VMEMMAP_ENABLE
187 config ARCH_SPARSEMEM_DEFAULT
188 def_bool ARCH_SPARSEMEM_ENABLE
190 config ARCH_SELECT_MEMORY_MODEL
191 def_bool ARCH_SPARSEMEM_ENABLE
193 config HAVE_ARCH_PFN_VALID
194 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
196 config HW_PERF_EVENTS
197 bool "Enable hardware performance counter support for perf events"
198 depends on PERF_EVENTS
201 Enable hardware performance counter support for perf events. If
202 disabled, perf events will use software events only.
204 config SYS_SUPPORTS_HUGETLBFS
207 config ARCH_WANT_GENERAL_HUGETLB
210 config ARCH_WANT_HUGE_PMD_SHARE
211 def_bool y if !ARM64_64K_PAGES
213 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
218 config FORCE_MAX_ZONEORDER
220 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
228 string "Default kernel command string"
231 Provide a set of default command-line options at build time by
232 entering them here. As a minimum, you should specify the the
233 root device (e.g. root=/dev/nfs).
236 bool "Always use the default kernel command string"
238 Always use the default kernel command string, even if the boot
239 loader passes other arguments to the kernel.
240 This is useful if you cannot or don't want to change the
241 command-line options your boot loader passes to the kernel.
245 menu "Userspace binary formats"
247 source "fs/Kconfig.binfmt"
250 bool "Kernel support for 32-bit EL0"
251 depends on !ARM64_64K_PAGES
252 select COMPAT_BINFMT_ELF
254 select OLD_SIGSUSPEND3
255 select COMPAT_OLD_SIGACTION
257 This option enables support for a 32-bit EL0 running under a 64-bit
258 kernel at EL1. AArch32-specific components such as system calls,
259 the user helper functions, VFP support and the ptrace interface are
260 handled appropriately by the kernel.
262 If you want to execute 32-bit userspace applications, say Y.
264 config SYSVIPC_COMPAT
266 depends on COMPAT && SYSVIPC
272 source "drivers/Kconfig"
276 source "arch/arm64/Kconfig.debug"
278 source "security/Kconfig"
280 source "crypto/Kconfig"