3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
4 select ARCH_WANT_OPTIONAL_GPIOLIB
5 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
6 select ARCH_WANT_FRAME_POINTERS
10 select BUILDTIME_EXTABLE_SORT
11 select CLONE_BACKWARDS
13 select GENERIC_CLOCKEVENTS
15 select GENERIC_IRQ_PROBE
16 select GENERIC_IRQ_SHOW
17 select GENERIC_SMP_IDLE_THREAD
18 select GENERIC_TIME_VSYSCALL
19 select HARDIRQS_SW_RESEND
20 select HAVE_ARCH_TRACEHOOK
21 select HAVE_DEBUG_BUGVERBOSE
22 select HAVE_DEBUG_KMEMLEAK
23 select HAVE_DMA_API_DEBUG
25 select HAVE_GENERIC_DMA_COHERENT
26 select HAVE_HW_BREAKPOINT if PERF_EVENTS
28 select HAVE_PERF_EVENTS
30 select MODULES_USE_ELF_RELA
33 select OF_EARLY_FLATTREE
34 select PERF_USE_VMALLOC
39 select SYSCTL_EXCEPTION_TRACE
41 ARM 64-bit (AArch64) Linux support.
46 config ARCH_PHYS_ADDR_T_64BIT
55 config STACKTRACE_SUPPORT
58 config LOCKDEP_SUPPORT
61 config TRACE_IRQFLAGS_SUPPORT
64 config GENERIC_LOCKBREAK
66 depends on SMP && PREEMPT
68 config RWSEM_GENERIC_SPINLOCK
71 config GENERIC_HWEIGHT
77 config GENERIC_CALIBRATE_DELAY
83 config ARCH_DMA_ADDR_T_64BIT
86 config NEED_DMA_MAP_STATE
89 config NEED_SG_DMA_LENGTH
98 config KERNEL_MODE_NEON
101 source "init/Kconfig"
103 source "kernel/Kconfig.freezer"
105 menu "Platform selection"
108 bool "ARMv8 software model (Versatile Express)"
109 select ARCH_REQUIRE_GPIOLIB
110 select COMMON_CLK_VERSATILE
111 select POWER_RESET_VEXPRESS
112 select VEXPRESS_CONFIG
114 This enables support for the ARMv8 software model (Versatile
118 bool "AppliedMicro X-Gene SOC Family"
120 This enables support for AppliedMicro X-Gene SOC Family
131 menu "Kernel Features"
133 config ARM64_64K_PAGES
134 bool "Enable 64KB pages support"
136 This feature enables 64KB pages support (4KB by default)
137 allowing only two levels of page tables and faster TLB
138 look-up. AArch32 emulation is not available when this feature
142 bool "Symmetric Multi-Processing"
143 select USE_GENERIC_SMP_HELPERS
145 This enables support for systems with more than one CPU. If
146 you say N here, the kernel will run on single and
147 multiprocessor machines, but will use only one CPU of a
148 multiprocessor machine. If you say Y here, the kernel will run
149 on many, but not all, single processor machines. On a single
150 processor machine, the kernel will run faster if you say N
153 If you don't know what to do here, say N.
156 int "Maximum number of CPUs (2-32)"
159 # These have to remain sorted largest to smallest
160 default "8" if ARCH_XGENE
163 source kernel/Kconfig.preempt
169 config ARCH_HAS_HOLES_MEMORYMODEL
170 def_bool y if SPARSEMEM
172 config ARCH_SPARSEMEM_ENABLE
174 select SPARSEMEM_VMEMMAP_ENABLE
176 config ARCH_SPARSEMEM_DEFAULT
177 def_bool ARCH_SPARSEMEM_ENABLE
179 config ARCH_SELECT_MEMORY_MODEL
180 def_bool ARCH_SPARSEMEM_ENABLE
182 config HAVE_ARCH_PFN_VALID
183 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
185 config HW_PERF_EVENTS
186 bool "Enable hardware performance counter support for perf events"
187 depends on PERF_EVENTS
190 Enable hardware performance counter support for perf events. If
191 disabled, perf events will use software events only.
193 config SYS_SUPPORTS_HUGETLBFS
196 config ARCH_WANT_GENERAL_HUGETLB
199 config ARCH_WANT_HUGE_PMD_SHARE
200 def_bool y if !ARM64_64K_PAGES
202 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
212 bool "Xen guest support on ARM64 (EXPERIMENTAL)"
213 depends on ARM64 && OF
215 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
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/kvm/Kconfig"
277 source "arch/arm64/Kconfig.debug"
279 source "security/Kconfig"
281 source "crypto/Kconfig"