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
24 select HAVE_ARCH_TRACEHOOK
25 select HAVE_DEBUG_BUGVERBOSE
26 select HAVE_DEBUG_KMEMLEAK
27 select HAVE_DMA_API_DEBUG
29 select HAVE_EFFICIENT_UNALIGNED_ACCESS
30 select HAVE_GENERIC_DMA_COHERENT
31 select HAVE_GENERIC_HARDIRQS
32 select HAVE_HW_BREAKPOINT if PERF_EVENTS
34 select HAVE_PERF_EVENTS
36 select MODULES_USE_ELF_RELA
39 select OF_EARLY_FLATTREE
40 select PERF_USE_VMALLOC
45 select SYSCTL_EXCEPTION_TRACE
47 ARM 64-bit (AArch64) Linux support.
52 config ARCH_PHYS_ADDR_T_64BIT
61 config STACKTRACE_SUPPORT
64 config LOCKDEP_SUPPORT
67 config TRACE_IRQFLAGS_SUPPORT
70 config RWSEM_GENERIC_SPINLOCK
73 config GENERIC_HWEIGHT
79 config GENERIC_CALIBRATE_DELAY
85 config ARCH_DMA_ADDR_T_64BIT
88 config NEED_DMA_MAP_STATE
91 config NEED_SG_DMA_LENGTH
100 source "init/Kconfig"
102 source "kernel/Kconfig.freezer"
104 menu "Platform selection"
107 bool "ARMv8 software model (Versatile Express)"
108 select ARCH_REQUIRE_GPIOLIB
109 select COMMON_CLK_VERSATILE
110 select POWER_RESET_VEXPRESS
111 select VEXPRESS_CONFIG
113 This enables support for the ARMv8 software model (Versatile
117 bool "AppliedMicro X-Gene SOC Family"
119 This enables support for AppliedMicro X-Gene SOC Family
130 menu "Kernel Features"
132 config ARM64_64K_PAGES
133 bool "Enable 64KB pages support"
135 This feature enables 64KB pages support (4KB by default)
136 allowing only two levels of page tables and faster TLB
137 look-up. AArch32 emulation is not available when this feature
141 bool "Symmetric Multi-Processing"
142 select USE_GENERIC_SMP_HELPERS
144 This enables support for systems with more than one CPU. If
145 you say N here, the kernel will run on single and
146 multiprocessor machines, but will use only one CPU of a
147 multiprocessor machine. If you say Y here, the kernel will run
148 on many, but not all, single processor machines. On a single
149 processor machine, the kernel will run faster if you say N
152 If you don't know what to do here, say N.
155 int "Maximum number of CPUs (2-32)"
158 # These have to remain sorted largest to smallest
162 bool "Support for hot-pluggable CPUs"
165 Say Y here to experiment with turning CPUs off and on. CPUs
166 can be controlled through /sys/devices/system/cpu.
168 source kernel/Kconfig.preempt
174 config ARCH_HAS_HOLES_MEMORYMODEL
175 def_bool y if SPARSEMEM
177 config ARCH_SPARSEMEM_ENABLE
179 select SPARSEMEM_VMEMMAP_ENABLE
181 config ARCH_SPARSEMEM_DEFAULT
182 def_bool ARCH_SPARSEMEM_ENABLE
184 config ARCH_SELECT_MEMORY_MODEL
185 def_bool ARCH_SPARSEMEM_ENABLE
187 config HAVE_ARCH_PFN_VALID
188 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
190 config HW_PERF_EVENTS
191 bool "Enable hardware performance counter support for perf events"
192 depends on PERF_EVENTS
195 Enable hardware performance counter support for perf events. If
196 disabled, perf events will use software events only.
198 config SYS_SUPPORTS_HUGETLBFS
201 config ARCH_WANT_GENERAL_HUGETLB
204 config ARCH_WANT_HUGE_PMD_SHARE
205 def_bool y if !ARM64_64K_PAGES
207 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
212 config FORCE_MAX_ZONEORDER
214 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
222 string "Default kernel command string"
225 Provide a set of default command-line options at build time by
226 entering them here. As a minimum, you should specify the the
227 root device (e.g. root=/dev/nfs).
230 bool "Always use the default kernel command string"
232 Always use the default kernel command string, even if the boot
233 loader passes other arguments to the kernel.
234 This is useful if you cannot or don't want to change the
235 command-line options your boot loader passes to the kernel.
239 menu "Userspace binary formats"
241 source "fs/Kconfig.binfmt"
244 bool "Kernel support for 32-bit EL0"
245 depends on !ARM64_64K_PAGES
246 select COMPAT_BINFMT_ELF
248 select OLD_SIGSUSPEND3
249 select COMPAT_OLD_SIGACTION
251 This option enables support for a 32-bit EL0 running under a 64-bit
252 kernel at EL1. AArch32-specific components such as system calls,
253 the user helper functions, VFP support and the ptrace interface are
254 handled appropriately by the kernel.
256 If you want to execute 32-bit userspace applications, say Y.
258 config SYSVIPC_COMPAT
260 depends on COMPAT && SYSVIPC
266 source "drivers/Kconfig"
270 source "arch/arm64/Kconfig.debug"
272 source "security/Kconfig"
274 source "crypto/Kconfig"