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 CLONE_BACKWARDS
12 select GENERIC_CLOCKEVENTS
14 select GENERIC_IRQ_PROBE
15 select GENERIC_IRQ_SHOW
16 select GENERIC_SMP_IDLE_THREAD
17 select GENERIC_TIME_VSYSCALL
18 select HARDIRQS_SW_RESEND
19 select HAVE_ARCH_TRACEHOOK
20 select HAVE_DEBUG_BUGVERBOSE
21 select HAVE_DEBUG_KMEMLEAK
22 select HAVE_DMA_API_DEBUG
24 select HAVE_GENERIC_DMA_COHERENT
25 select HAVE_GENERIC_HARDIRQS
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
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
126 menu "Kernel Features"
128 source "kernel/time/Kconfig"
130 config ARM64_64K_PAGES
131 bool "Enable 64KB pages support"
133 This feature enables 64KB pages support (4KB by default)
134 allowing only two levels of page tables and faster TLB
135 look-up. AArch32 emulation is not available when this feature
139 bool "Symmetric Multi-Processing"
140 select USE_GENERIC_SMP_HELPERS
142 This enables support for systems with more than one CPU. If
143 you say N here, the kernel will run on single and
144 multiprocessor machines, but will use only one CPU of a
145 multiprocessor machine. If you say Y here, the kernel will run
146 on many, but not all, single processor machines. On a single
147 processor machine, the kernel will run faster if you say N
150 If you don't know what to do here, say N.
153 int "Maximum number of CPUs (2-32)"
158 source kernel/Kconfig.preempt
164 config ARCH_HAS_HOLES_MEMORYMODEL
165 def_bool y if SPARSEMEM
167 config ARCH_SPARSEMEM_ENABLE
169 select SPARSEMEM_VMEMMAP_ENABLE
171 config ARCH_SPARSEMEM_DEFAULT
172 def_bool ARCH_SPARSEMEM_ENABLE
174 config ARCH_SELECT_MEMORY_MODEL
175 def_bool ARCH_SPARSEMEM_ENABLE
177 config HAVE_ARCH_PFN_VALID
178 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
180 config HW_PERF_EVENTS
181 bool "Enable hardware performance counter support for perf events"
182 depends on PERF_EVENTS
185 Enable hardware performance counter support for perf events. If
186 disabled, perf events will use software events only.
195 string "Default kernel command string"
198 Provide a set of default command-line options at build time by
199 entering them here. As a minimum, you should specify the the
200 root device (e.g. root=/dev/nfs).
203 bool "Always use the default kernel command string"
205 Always use the default kernel command string, even if the boot
206 loader passes other arguments to the kernel.
207 This is useful if you cannot or don't want to change the
208 command-line options your boot loader passes to the kernel.
212 menu "Userspace binary formats"
214 source "fs/Kconfig.binfmt"
217 bool "Kernel support for 32-bit EL0"
218 depends on !ARM64_64K_PAGES
219 select COMPAT_BINFMT_ELF
221 select OLD_SIGSUSPEND3
222 select COMPAT_OLD_SIGACTION
224 This option enables support for a 32-bit EL0 running under a 64-bit
225 kernel at EL1. AArch32-specific components such as system calls,
226 the user helper functions, VFP support and the ptrace interface are
227 handled appropriately by the kernel.
229 If you want to execute 32-bit userspace applications, say Y.
231 config SYSVIPC_COMPAT
233 depends on COMPAT && SYSVIPC
239 source "drivers/Kconfig"
243 source "arch/arm64/Kconfig.debug"
245 source "security/Kconfig"
247 source "crypto/Kconfig"