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_GENERIC_HARDIRQS
27 select HAVE_HW_BREAKPOINT if PERF_EVENTS
29 select HAVE_PERF_EVENTS
31 select MODULES_USE_ELF_RELA
34 select OF_EARLY_FLATTREE
35 select PERF_USE_VMALLOC
40 select SYSCTL_EXCEPTION_TRACE
42 ARM 64-bit (AArch64) Linux support.
47 config ARCH_PHYS_ADDR_T_64BIT
56 config STACKTRACE_SUPPORT
59 config LOCKDEP_SUPPORT
62 config TRACE_IRQFLAGS_SUPPORT
65 config GENERIC_LOCKBREAK
67 depends on SMP && PREEMPT
69 config RWSEM_GENERIC_SPINLOCK
72 config GENERIC_HWEIGHT
78 config GENERIC_CALIBRATE_DELAY
84 config ARCH_DMA_ADDR_T_64BIT
87 config NEED_DMA_MAP_STATE
90 config NEED_SG_DMA_LENGTH
101 source "kernel/Kconfig.freezer"
103 menu "Platform selection"
106 bool "ARMv8 software model (Versatile Express)"
107 select ARCH_REQUIRE_GPIOLIB
108 select COMMON_CLK_VERSATILE
109 select POWER_RESET_VEXPRESS
110 select VEXPRESS_CONFIG
112 This enables support for the ARMv8 software model (Versatile
116 bool "AppliedMicro X-Gene SOC Family"
118 This enables support for AppliedMicro X-Gene SOC Family
129 menu "Kernel Features"
131 config ARM64_64K_PAGES
132 bool "Enable 64KB pages support"
134 This feature enables 64KB pages support (4KB by default)
135 allowing only two levels of page tables and faster TLB
136 look-up. AArch32 emulation is not available when this feature
140 bool "Symmetric Multi-Processing"
141 select USE_GENERIC_SMP_HELPERS
143 This enables support for systems with more than one CPU. If
144 you say N here, the kernel will run on single and
145 multiprocessor machines, but will use only one CPU of a
146 multiprocessor machine. If you say Y here, the kernel will run
147 on many, but not all, single processor machines. On a single
148 processor machine, the kernel will run faster if you say N
151 If you don't know what to do here, say N.
154 int "Maximum number of CPUs (2-32)"
157 # These have to remain sorted largest to smallest
158 default "8" if ARCH_XGENE
161 source kernel/Kconfig.preempt
167 config ARCH_HAS_HOLES_MEMORYMODEL
168 def_bool y if SPARSEMEM
170 config ARCH_SPARSEMEM_ENABLE
172 select SPARSEMEM_VMEMMAP_ENABLE
174 config ARCH_SPARSEMEM_DEFAULT
175 def_bool ARCH_SPARSEMEM_ENABLE
177 config ARCH_SELECT_MEMORY_MODEL
178 def_bool ARCH_SPARSEMEM_ENABLE
180 config HAVE_ARCH_PFN_VALID
181 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
183 config HW_PERF_EVENTS
184 bool "Enable hardware performance counter support for perf events"
185 depends on PERF_EVENTS
188 Enable hardware performance counter support for perf events. If
189 disabled, perf events will use software events only.
191 config SYS_SUPPORTS_HUGETLBFS
194 config ARCH_WANT_GENERAL_HUGETLB
197 config ARCH_WANT_HUGE_PMD_SHARE
198 def_bool y if !ARM64_64K_PAGES
200 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
210 bool "Xen guest support on ARM64 (EXPERIMENTAL)"
211 depends on ARM64 && OF
213 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
215 config FORCE_MAX_ZONEORDER
217 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
225 string "Default kernel command string"
228 Provide a set of default command-line options at build time by
229 entering them here. As a minimum, you should specify the the
230 root device (e.g. root=/dev/nfs).
233 bool "Always use the default kernel command string"
235 Always use the default kernel command string, even if the boot
236 loader passes other arguments to the kernel.
237 This is useful if you cannot or don't want to change the
238 command-line options your boot loader passes to the kernel.
242 menu "Userspace binary formats"
244 source "fs/Kconfig.binfmt"
247 bool "Kernel support for 32-bit EL0"
248 depends on !ARM64_64K_PAGES
249 select COMPAT_BINFMT_ELF
251 select OLD_SIGSUSPEND3
252 select COMPAT_OLD_SIGACTION
254 This option enables support for a 32-bit EL0 running under a 64-bit
255 kernel at EL1. AArch32-specific components such as system calls,
256 the user helper functions, VFP support and the ptrace interface are
257 handled appropriately by the kernel.
259 If you want to execute 32-bit userspace applications, say Y.
261 config SYSVIPC_COMPAT
263 depends on COMPAT && SYSVIPC
269 source "drivers/Kconfig"
273 source "arch/arm64/kvm/Kconfig"
275 source "arch/arm64/Kconfig.debug"
277 source "security/Kconfig"
279 source "crypto/Kconfig"