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_DMA_CONTIGUOUS
32 select HAVE_EFFICIENT_UNALIGNED_ACCESS
33 select HAVE_GENERIC_DMA_COHERENT
34 select HAVE_GENERIC_HARDIRQS
35 select HAVE_HW_BREAKPOINT if PERF_EVENTS
37 select HAVE_PATA_PLATFORM
38 select HAVE_PERF_EVENTS
40 select MODULES_USE_ELF_RELA
43 select OF_EARLY_FLATTREE
44 select OF_RESERVED_MEM
45 select PERF_USE_VMALLOC
50 select SYSCTL_EXCEPTION_TRACE
52 ARM 64-bit (AArch64) Linux support.
57 config ARCH_PHYS_ADDR_T_64BIT
66 config STACKTRACE_SUPPORT
69 config LOCKDEP_SUPPORT
72 config TRACE_IRQFLAGS_SUPPORT
75 config RWSEM_XCHGADD_ALGORITHM
78 config GENERIC_HWEIGHT
84 config GENERIC_CALIBRATE_DELAY
90 config ARCH_DMA_ADDR_T_64BIT
93 config NEED_DMA_MAP_STATE
96 config NEED_SG_DMA_LENGTH
105 config FIX_EARLYCON_MEM
108 source "init/Kconfig"
110 source "kernel/Kconfig.freezer"
112 menu "Platform selection"
115 bool "ARMv8 software model (Versatile Express)"
116 select ARCH_REQUIRE_GPIOLIB
117 select COMMON_CLK_VERSATILE
118 select POWER_RESET_VEXPRESS
119 select VEXPRESS_CONFIG
121 This enables support for the ARMv8 software model (Versatile
125 bool "AppliedMicro X-Gene SOC Family"
127 This enables support for AppliedMicro X-Gene SOC Family
138 menu "Kernel Features"
140 config ARM64_64K_PAGES
141 bool "Enable 64KB pages support"
143 This feature enables 64KB pages support (4KB by default)
144 allowing only two levels of page tables and faster TLB
145 look-up. AArch32 emulation is not available when this feature
149 bool "Symmetric Multi-Processing"
150 select USE_GENERIC_SMP_HELPERS
152 This enables support for systems with more than one CPU. If
153 you say N here, the kernel will run on single and
154 multiprocessor machines, but will use only one CPU of a
155 multiprocessor machine. If you say Y here, the kernel will run
156 on many, but not all, single processor machines. On a single
157 processor machine, the kernel will run faster if you say N
160 If you don't know what to do here, say N.
163 int "Maximum number of CPUs (2-32)"
166 # These have to remain sorted largest to smallest
170 bool "Support for hot-pluggable CPUs"
173 Say Y here to experiment with turning CPUs off and on. CPUs
174 can be controlled through /sys/devices/system/cpu.
176 source kernel/Kconfig.preempt
182 config ARCH_HAS_HOLES_MEMORYMODEL
183 def_bool y if SPARSEMEM
185 config ARCH_SPARSEMEM_ENABLE
187 select SPARSEMEM_VMEMMAP_ENABLE
189 config ARCH_SPARSEMEM_DEFAULT
190 def_bool ARCH_SPARSEMEM_ENABLE
192 config ARCH_SELECT_MEMORY_MODEL
193 def_bool ARCH_SPARSEMEM_ENABLE
195 config HAVE_ARCH_PFN_VALID
196 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
198 config HW_PERF_EVENTS
199 bool "Enable hardware performance counter support for perf events"
200 depends on PERF_EVENTS
203 Enable hardware performance counter support for perf events. If
204 disabled, perf events will use software events only.
206 config SYS_SUPPORTS_HUGETLBFS
209 config ARCH_WANT_GENERAL_HUGETLB
212 config ARCH_WANT_HUGE_PMD_SHARE
213 def_bool y if !ARM64_64K_PAGES
215 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
220 config FORCE_MAX_ZONEORDER
222 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
230 string "Default kernel command string"
233 Provide a set of default command-line options at build time by
234 entering them here. As a minimum, you should specify the the
235 root device (e.g. root=/dev/nfs).
238 bool "Always use the default kernel command string"
240 Always use the default kernel command string, even if the boot
241 loader passes other arguments to the kernel.
242 This is useful if you cannot or don't want to change the
243 command-line options your boot loader passes to the kernel.
247 menu "Userspace binary formats"
249 source "fs/Kconfig.binfmt"
252 bool "Kernel support for 32-bit EL0"
253 depends on !ARM64_64K_PAGES
254 select COMPAT_BINFMT_ELF
256 select OLD_SIGSUSPEND3
257 select COMPAT_OLD_SIGACTION
259 This option enables support for a 32-bit EL0 running under a 64-bit
260 kernel at EL1. AArch32-specific components such as system calls,
261 the user helper functions, VFP support and the ptrace interface are
262 handled appropriately by the kernel.
264 If you want to execute 32-bit userspace applications, say Y.
266 config SYSVIPC_COMPAT
268 depends on COMPAT && SYSVIPC
274 source "drivers/Kconfig"
278 source "arch/arm64/Kconfig.debug"
280 source "security/Kconfig"
282 source "crypto/Kconfig"