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 GENERIC_CLOCKEVENTS
16 select GENERIC_IRQ_PROBE
17 select GENERIC_IRQ_SHOW
18 select GENERIC_SMP_IDLE_THREAD
19 select GENERIC_TIME_VSYSCALL
20 select HARDIRQS_SW_RESEND
21 select HAVE_ARCH_TRACEHOOK
22 select HAVE_DEBUG_BUGVERBOSE
23 select HAVE_DEBUG_KMEMLEAK
24 select HAVE_DMA_API_DEBUG
26 select HAVE_GENERIC_DMA_COHERENT
27 select HAVE_GENERIC_HARDIRQS
28 select HAVE_HW_BREAKPOINT if PERF_EVENTS
30 select HAVE_PERF_EVENTS
32 select MODULES_USE_ELF_RELA
35 select OF_EARLY_FLATTREE
36 select PERF_USE_VMALLOC
41 select SYSCTL_EXCEPTION_TRACE
43 ARM 64-bit (AArch64) Linux support.
48 config ARCH_PHYS_ADDR_T_64BIT
57 config STACKTRACE_SUPPORT
60 config LOCKDEP_SUPPORT
63 config TRACE_IRQFLAGS_SUPPORT
66 config RWSEM_GENERIC_SPINLOCK
69 config GENERIC_HWEIGHT
75 config GENERIC_CALIBRATE_DELAY
81 config ARCH_DMA_ADDR_T_64BIT
84 config NEED_DMA_MAP_STATE
87 config NEED_SG_DMA_LENGTH
98 source "kernel/Kconfig.freezer"
100 menu "Platform selection"
103 bool "ARMv8 software model (Versatile Express)"
104 select ARCH_REQUIRE_GPIOLIB
105 select COMMON_CLK_VERSATILE
106 select POWER_RESET_VEXPRESS
107 select VEXPRESS_CONFIG
109 This enables support for the ARMv8 software model (Versatile
113 bool "AppliedMicro X-Gene SOC Family"
115 This enables support for AppliedMicro X-Gene SOC Family
126 menu "Kernel Features"
128 config ARM64_64K_PAGES
129 bool "Enable 64KB pages support"
131 This feature enables 64KB pages support (4KB by default)
132 allowing only two levels of page tables and faster TLB
133 look-up. AArch32 emulation is not available when this feature
137 bool "Symmetric Multi-Processing"
138 select USE_GENERIC_SMP_HELPERS
140 This enables support for systems with more than one CPU. If
141 you say N here, the kernel will run on single and
142 multiprocessor machines, but will use only one CPU of a
143 multiprocessor machine. If you say Y here, the kernel will run
144 on many, but not all, single processor machines. On a single
145 processor machine, the kernel will run faster if you say N
148 If you don't know what to do here, say N.
151 int "Maximum number of CPUs (2-32)"
154 # These have to remain sorted largest to smallest
155 default "8" if ARCH_XGENE
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.
188 config SYS_SUPPORTS_HUGETLBFS
191 config ARCH_WANT_GENERAL_HUGETLB
194 config ARCH_WANT_HUGE_PMD_SHARE
195 def_bool y if !ARM64_64K_PAGES
197 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
202 config FORCE_MAX_ZONEORDER
204 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
212 string "Default kernel command string"
215 Provide a set of default command-line options at build time by
216 entering them here. As a minimum, you should specify the the
217 root device (e.g. root=/dev/nfs).
220 bool "Always use the default kernel command string"
222 Always use the default kernel command string, even if the boot
223 loader passes other arguments to the kernel.
224 This is useful if you cannot or don't want to change the
225 command-line options your boot loader passes to the kernel.
229 menu "Userspace binary formats"
231 source "fs/Kconfig.binfmt"
234 bool "Kernel support for 32-bit EL0"
235 depends on !ARM64_64K_PAGES
236 select COMPAT_BINFMT_ELF
238 select OLD_SIGSUSPEND3
239 select COMPAT_OLD_SIGACTION
241 This option enables support for a 32-bit EL0 running under a 64-bit
242 kernel at EL1. AArch32-specific components such as system calls,
243 the user helper functions, VFP support and the ptrace interface are
244 handled appropriately by the kernel.
246 If you want to execute 32-bit userspace applications, say Y.
248 config SYSVIPC_COMPAT
250 depends on COMPAT && SYSVIPC
256 source "drivers/Kconfig"
260 source "arch/arm64/Kconfig.debug"
262 source "security/Kconfig"
264 source "crypto/Kconfig"