config ARM64 def_bool y select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE select ARCH_SUPPORTS_ATOMIC_RMW select ARCH_WANT_OPTIONAL_GPIOLIB select ARCH_WANT_COMPAT_IPC_PARSE_VERSION select ARCH_WANT_FRAME_POINTERS select ARM_AMBA select ARM_ARCH_TIMER select ARM_GIC select CLONE_BACKWARDS select COMMON_CLK select GENERIC_CLOCKEVENTS select GENERIC_IOMAP select GENERIC_IRQ_PROBE select GENERIC_IRQ_SHOW select GENERIC_SMP_IDLE_THREAD select GENERIC_TIME_VSYSCALL select HARDIRQS_SW_RESEND select HAVE_ARCH_TRACEHOOK select HAVE_DEBUG_BUGVERBOSE select HAVE_DEBUG_KMEMLEAK select HAVE_DMA_API_DEBUG select HAVE_DMA_ATTRS select HAVE_GENERIC_DMA_COHERENT select HAVE_GENERIC_HARDIRQS select HAVE_HW_BREAKPOINT if PERF_EVENTS select HAVE_MEMBLOCK select HAVE_PERF_EVENTS select IRQ_DOMAIN select MODULES_USE_ELF_RELA select NO_BOOTMEM select OF select OF_EARLY_FLATTREE select OF_RESERVED_MEM select PERF_USE_VMALLOC select POWER_RESET select POWER_SUPPLY select RTC_LIB select SPARSE_IRQ select SYSCTL_EXCEPTION_TRACE help ARM 64-bit (AArch64) Linux support. config 64BIT def_bool y config ARCH_PHYS_ADDR_T_64BIT def_bool y config MMU def_bool y config NO_IOPORT def_bool y config STACKTRACE_SUPPORT def_bool y config ILLEGAL_POINTER_VALUE hex default 0xdead000000000000 config LOCKDEP_SUPPORT def_bool y config TRACE_IRQFLAGS_SUPPORT def_bool y config GENERIC_LOCKBREAK def_bool y depends on SMP && PREEMPT config RWSEM_GENERIC_SPINLOCK def_bool y config GENERIC_HWEIGHT def_bool y config GENERIC_CSUM def_bool y config GENERIC_CALIBRATE_DELAY def_bool y config ZONE_DMA32 def_bool y config ARCH_DMA_ADDR_T_64BIT def_bool y config NEED_DMA_MAP_STATE def_bool y config NEED_SG_DMA_LENGTH def_bool y config SWIOTLB def_bool y config IOMMU_HELPER def_bool SWIOTLB source "init/Kconfig" source "kernel/Kconfig.freezer" menu "Platform selection" config ARCH_VEXPRESS bool "ARMv8 software model (Versatile Express)" select ARCH_REQUIRE_GPIOLIB select COMMON_CLK_VERSATILE select POWER_RESET_VEXPRESS select VEXPRESS_CONFIG help This enables support for the ARMv8 software model (Versatile Express). endmenu menu "Bus support" config ARM_AMBA bool endmenu menu "Kernel Features" config ARM64_64K_PAGES bool "Enable 64KB pages support" help This feature enables 64KB pages support (4KB by default) allowing only two levels of page tables and faster TLB look-up. AArch32 emulation is not available when this feature is enabled. config SMP bool "Symmetric Multi-Processing" select USE_GENERIC_SMP_HELPERS help This enables support for systems with more than one CPU. If you say N here, the kernel will run on single and multiprocessor machines, but will use only one CPU of a multiprocessor machine. If you say Y here, the kernel will run on many, but not all, single processor machines. On a single processor machine, the kernel will run faster if you say N here. If you don't know what to do here, say N. config NR_CPUS int "Maximum number of CPUs (2-32)" range 2 32 depends on SMP default "4" source kernel/Kconfig.preempt config HZ int default 100 config ARCH_HAS_HOLES_MEMORYMODEL def_bool y if SPARSEMEM config ARCH_SPARSEMEM_ENABLE def_bool y select SPARSEMEM_VMEMMAP_ENABLE config ARCH_SPARSEMEM_DEFAULT def_bool ARCH_SPARSEMEM_ENABLE config ARCH_SELECT_MEMORY_MODEL def_bool ARCH_SPARSEMEM_ENABLE config HAVE_ARCH_PFN_VALID def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM config HW_PERF_EVENTS bool "Enable hardware performance counter support for perf events" depends on PERF_EVENTS default y help Enable hardware performance counter support for perf events. If disabled, perf events will use software events only. source "mm/Kconfig" endmenu menu "Boot options" config CMDLINE string "Default kernel command string" default "" help Provide a set of default command-line options at build time by entering them here. As a minimum, you should specify the the root device (e.g. root=/dev/nfs). config CMDLINE_FORCE bool "Always use the default kernel command string" help Always use the default kernel command string, even if the boot loader passes other arguments to the kernel. This is useful if you cannot or don't want to change the command-line options your boot loader passes to the kernel. endmenu menu "Userspace binary formats" source "fs/Kconfig.binfmt" config COMPAT bool "Kernel support for 32-bit EL0" depends on !ARM64_64K_PAGES select COMPAT_BINFMT_ELF select HAVE_UID16 select OLD_SIGSUSPEND3 select COMPAT_OLD_SIGACTION help This option enables support for a 32-bit EL0 running under a 64-bit kernel at EL1. AArch32-specific components such as system calls, the user helper functions, VFP support and the ptrace interface are handled appropriately by the kernel. If you want to execute 32-bit userspace applications, say Y. config SYSVIPC_COMPAT def_bool y depends on COMPAT && SYSVIPC endmenu source "net/Kconfig" source "drivers/Kconfig" source "fs/Kconfig" source "arch/arm64/Kconfig.debug" source "security/Kconfig" source "crypto/Kconfig" source "lib/Kconfig"