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_XCHGADD_ALGORITHM
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 config FIX_EARLYCON_MEM
105 source "init/Kconfig"
107 source "kernel/Kconfig.freezer"
109 menu "Platform selection"
112 bool "ARMv8 software model (Versatile Express)"
113 select ARCH_REQUIRE_GPIOLIB
114 select COMMON_CLK_VERSATILE
115 select POWER_RESET_VEXPRESS
116 select VEXPRESS_CONFIG
118 This enables support for the ARMv8 software model (Versatile
122 bool "AppliedMicro X-Gene SOC Family"
124 This enables support for AppliedMicro X-Gene SOC Family
135 menu "Kernel Features"
137 config ARM64_64K_PAGES
138 bool "Enable 64KB pages support"
140 This feature enables 64KB pages support (4KB by default)
141 allowing only two levels of page tables and faster TLB
142 look-up. AArch32 emulation is not available when this feature
146 bool "Symmetric Multi-Processing"
147 select USE_GENERIC_SMP_HELPERS
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
217 config FORCE_MAX_ZONEORDER
219 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
227 string "Default kernel command string"
230 Provide a set of default command-line options at build time by
231 entering them here. As a minimum, you should specify the the
232 root device (e.g. root=/dev/nfs).
235 bool "Always use the default kernel command string"
237 Always use the default kernel command string, even if the boot
238 loader passes other arguments to the kernel.
239 This is useful if you cannot or don't want to change the
240 command-line options your boot loader passes to the kernel.
244 menu "Userspace binary formats"
246 source "fs/Kconfig.binfmt"
249 bool "Kernel support for 32-bit EL0"
250 depends on !ARM64_64K_PAGES
251 select COMPAT_BINFMT_ELF
253 select OLD_SIGSUSPEND3
254 select COMPAT_OLD_SIGACTION
256 This option enables support for a 32-bit EL0 running under a 64-bit
257 kernel at EL1. AArch32-specific components such as system calls,
258 the user helper functions, VFP support and the ptrace interface are
259 handled appropriately by the kernel.
261 If you want to execute 32-bit userspace applications, say Y.
263 config SYSVIPC_COMPAT
265 depends on COMPAT && SYSVIPC
271 source "drivers/Kconfig"
275 source "arch/arm64/Kconfig.debug"
277 source "security/Kconfig"
279 source "crypto/Kconfig"