3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
4 select ARCH_SUPPORTS_ATOMIC_RMW
5 select ARCH_WANT_OPTIONAL_GPIOLIB
6 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
7 select ARCH_WANT_FRAME_POINTERS
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
124 menu "Kernel Features"
126 config ARM64_64K_PAGES
127 bool "Enable 64KB pages support"
129 This feature enables 64KB pages support (4KB by default)
130 allowing only two levels of page tables and faster TLB
131 look-up. AArch32 emulation is not available when this feature
135 bool "Symmetric Multi-Processing"
136 select USE_GENERIC_SMP_HELPERS
138 This enables support for systems with more than one CPU. If
139 you say N here, the kernel will run on single and
140 multiprocessor machines, but will use only one CPU of a
141 multiprocessor machine. If you say Y here, the kernel will run
142 on many, but not all, single processor machines. On a single
143 processor machine, the kernel will run faster if you say N
146 If you don't know what to do here, say N.
149 int "Maximum number of CPUs (2-32)"
154 source kernel/Kconfig.preempt
160 config ARCH_HAS_HOLES_MEMORYMODEL
161 def_bool y if SPARSEMEM
163 config ARCH_SPARSEMEM_ENABLE
165 select SPARSEMEM_VMEMMAP_ENABLE
167 config ARCH_SPARSEMEM_DEFAULT
168 def_bool ARCH_SPARSEMEM_ENABLE
170 config ARCH_SELECT_MEMORY_MODEL
171 def_bool ARCH_SPARSEMEM_ENABLE
173 config HAVE_ARCH_PFN_VALID
174 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
176 config HW_PERF_EVENTS
177 bool "Enable hardware performance counter support for perf events"
178 depends on PERF_EVENTS
181 Enable hardware performance counter support for perf events. If
182 disabled, perf events will use software events only.
191 string "Default kernel command string"
194 Provide a set of default command-line options at build time by
195 entering them here. As a minimum, you should specify the the
196 root device (e.g. root=/dev/nfs).
199 bool "Always use the default kernel command string"
201 Always use the default kernel command string, even if the boot
202 loader passes other arguments to the kernel.
203 This is useful if you cannot or don't want to change the
204 command-line options your boot loader passes to the kernel.
208 menu "Userspace binary formats"
210 source "fs/Kconfig.binfmt"
213 bool "Kernel support for 32-bit EL0"
214 depends on !ARM64_64K_PAGES
215 select COMPAT_BINFMT_ELF
217 select OLD_SIGSUSPEND3
218 select COMPAT_OLD_SIGACTION
220 This option enables support for a 32-bit EL0 running under a 64-bit
221 kernel at EL1. AArch32-specific components such as system calls,
222 the user helper functions, VFP support and the ptrace interface are
223 handled appropriately by the kernel.
225 If you want to execute 32-bit userspace applications, say Y.
227 config SYSVIPC_COMPAT
229 depends on COMPAT && SYSVIPC
235 source "drivers/Kconfig"
239 source "arch/arm64/Kconfig.debug"
241 source "security/Kconfig"
243 source "crypto/Kconfig"