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_SMP_IDLE_THREAD
20 select GENERIC_STRNCPY_FROM_USER
21 select GENERIC_STRNLEN_USER
22 select GENERIC_TIME_VSYSCALL
23 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_EFFICIENT_UNALIGNED_ACCESS
31 select HAVE_GENERIC_DMA_COHERENT
32 select HAVE_GENERIC_HARDIRQS
33 select HAVE_HW_BREAKPOINT if PERF_EVENTS
35 select HAVE_PATA_PLATFORM
36 select HAVE_PERF_EVENTS
38 select MODULES_USE_ELF_RELA
41 select OF_EARLY_FLATTREE
42 select PERF_USE_VMALLOC
47 select SYSCTL_EXCEPTION_TRACE
49 ARM 64-bit (AArch64) Linux support.
54 config ARCH_PHYS_ADDR_T_64BIT
63 config STACKTRACE_SUPPORT
66 config LOCKDEP_SUPPORT
69 config TRACE_IRQFLAGS_SUPPORT
72 config RWSEM_GENERIC_SPINLOCK
75 config GENERIC_HWEIGHT
81 config GENERIC_CALIBRATE_DELAY
87 config ARCH_DMA_ADDR_T_64BIT
90 config NEED_DMA_MAP_STATE
93 config NEED_SG_DMA_LENGTH
102 source "init/Kconfig"
104 source "kernel/Kconfig.freezer"
106 menu "Platform selection"
109 bool "ARMv8 software model (Versatile Express)"
110 select ARCH_REQUIRE_GPIOLIB
111 select COMMON_CLK_VERSATILE
112 select POWER_RESET_VEXPRESS
113 select VEXPRESS_CONFIG
115 This enables support for the ARMv8 software model (Versatile
119 bool "AppliedMicro X-Gene SOC Family"
121 This enables support for AppliedMicro X-Gene SOC Family
132 menu "Kernel Features"
134 config ARM64_64K_PAGES
135 bool "Enable 64KB pages support"
137 This feature enables 64KB pages support (4KB by default)
138 allowing only two levels of page tables and faster TLB
139 look-up. AArch32 emulation is not available when this feature
143 bool "Symmetric Multi-Processing"
144 select USE_GENERIC_SMP_HELPERS
146 This enables support for systems with more than one CPU. If
147 you say N here, the kernel will run on single and
148 multiprocessor machines, but will use only one CPU of a
149 multiprocessor machine. If you say Y here, the kernel will run
150 on many, but not all, single processor machines. On a single
151 processor machine, the kernel will run faster if you say N
154 If you don't know what to do here, say N.
157 int "Maximum number of CPUs (2-32)"
160 # These have to remain sorted largest to smallest
164 bool "Support for hot-pluggable CPUs"
167 Say Y here to experiment with turning CPUs off and on. CPUs
168 can be controlled through /sys/devices/system/cpu.
170 source kernel/Kconfig.preempt
176 config ARCH_HAS_HOLES_MEMORYMODEL
177 def_bool y if SPARSEMEM
179 config ARCH_SPARSEMEM_ENABLE
181 select SPARSEMEM_VMEMMAP_ENABLE
183 config ARCH_SPARSEMEM_DEFAULT
184 def_bool ARCH_SPARSEMEM_ENABLE
186 config ARCH_SELECT_MEMORY_MODEL
187 def_bool ARCH_SPARSEMEM_ENABLE
189 config HAVE_ARCH_PFN_VALID
190 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
192 config HW_PERF_EVENTS
193 bool "Enable hardware performance counter support for perf events"
194 depends on PERF_EVENTS
197 Enable hardware performance counter support for perf events. If
198 disabled, perf events will use software events only.
200 config SYS_SUPPORTS_HUGETLBFS
203 config ARCH_WANT_GENERAL_HUGETLB
206 config ARCH_WANT_HUGE_PMD_SHARE
207 def_bool y if !ARM64_64K_PAGES
209 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
214 config FORCE_MAX_ZONEORDER
216 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
224 string "Default kernel command string"
227 Provide a set of default command-line options at build time by
228 entering them here. As a minimum, you should specify the the
229 root device (e.g. root=/dev/nfs).
232 bool "Always use the default kernel command string"
234 Always use the default kernel command string, even if the boot
235 loader passes other arguments to the kernel.
236 This is useful if you cannot or don't want to change the
237 command-line options your boot loader passes to the kernel.
241 menu "Userspace binary formats"
243 source "fs/Kconfig.binfmt"
246 bool "Kernel support for 32-bit EL0"
247 depends on !ARM64_64K_PAGES
248 select COMPAT_BINFMT_ELF
250 select OLD_SIGSUSPEND3
251 select COMPAT_OLD_SIGACTION
253 This option enables support for a 32-bit EL0 running under a 64-bit
254 kernel at EL1. AArch32-specific components such as system calls,
255 the user helper functions, VFP support and the ptrace interface are
256 handled appropriately by the kernel.
258 If you want to execute 32-bit userspace applications, say Y.
260 config SYSVIPC_COMPAT
262 depends on COMPAT && SYSVIPC
268 source "drivers/Kconfig"
272 source "arch/arm64/Kconfig.debug"
274 source "security/Kconfig"
276 source "crypto/Kconfig"