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kernel/linux-imx6_3.14.28/arch/arm64/Kconfig 6.67 KB
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  config ARM64
  	def_bool y
  	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
  	select ARCH_USE_CMPXCHG_LOCKREF
  	select ARCH_SUPPORTS_ATOMIC_RMW
  	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
  	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 BUILDTIME_EXTABLE_SORT
  	select CLONE_BACKWARDS
  	select COMMON_CLK
  	select CPU_PM if (SUSPEND || CPU_IDLE)
  	select DCACHE_WORD_ACCESS
  	select GENERIC_CLOCKEVENTS
  	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  	select GENERIC_IOMAP
  	select GENERIC_IRQ_PROBE
  	select GENERIC_IRQ_SHOW
  	select GENERIC_SCHED_CLOCK
  	select GENERIC_SMP_IDLE_THREAD
  	select GENERIC_STRNCPY_FROM_USER
  	select GENERIC_STRNLEN_USER
  	select GENERIC_TIME_VSYSCALL
  	select HARDIRQS_SW_RESEND
  	select HAVE_ARCH_JUMP_LABEL
  	select HAVE_ARCH_TRACEHOOK
  	select HAVE_DEBUG_BUGVERBOSE
  	select HAVE_DEBUG_KMEMLEAK
  	select HAVE_DMA_API_DEBUG
  	select HAVE_DMA_ATTRS
  	select HAVE_DMA_CONTIGUOUS
  	select HAVE_EFFICIENT_UNALIGNED_ACCESS
  	select HAVE_GENERIC_DMA_COHERENT
  	select HAVE_HW_BREAKPOINT if PERF_EVENTS
  	select HAVE_MEMBLOCK
  	select HAVE_PATA_PLATFORM
  	select HAVE_PERF_EVENTS
  	select IRQ_DOMAIN
  	select MODULES_USE_ELF_RELA
  	select NO_BOOTMEM
  	select OF
  	select OF_EARLY_FLATTREE
  	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 LOCKDEP_SUPPORT
  	def_bool y
  
  config TRACE_IRQFLAGS_SUPPORT
  	def_bool y
  
  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
  
  config KERNEL_MODE_NEON
  	def_bool y
  
  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).
  
  config ARCH_XGENE
  	bool "AppliedMicro X-Gene SOC Family"
  	help
  	  This enables support for AppliedMicro X-Gene SOC Family
  
  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 CPU_BIG_ENDIAN
         bool "Build big-endian kernel"
         help
           Say Y if you plan on running a kernel in big-endian mode.
  
  config SMP
  	bool "Symmetric Multi-Processing"
  	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
  	# These have to remain sorted largest to smallest
  	default "8"
  
  config HOTPLUG_CPU
  	bool "Support for hot-pluggable CPUs"
  	depends on SMP
  	help
  	  Say Y here to experiment with turning CPUs off and on.  CPUs
  	  can be controlled through /sys/devices/system/cpu.
  
  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.
  
  config SYS_SUPPORTS_HUGETLBFS
  	def_bool y
  
  config ARCH_WANT_GENERAL_HUGETLB
  	def_bool y
  
  config ARCH_WANT_HUGE_PMD_SHARE
  	def_bool y if !ARM64_64K_PAGES
  
  config HAVE_ARCH_TRANSPARENT_HUGEPAGE
  	def_bool y
  
  source "mm/Kconfig"
  
  config XEN_DOM0
  	def_bool y
  	depends on XEN
  
  config XEN
  	bool "Xen guest support on ARM64 (EXPERIMENTAL)"
  	depends on ARM64 && OF
  	select SWIOTLB_XEN
  	help
  	  Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
  
  config FORCE_MAX_ZONEORDER
  	int
  	default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
  	default "11"
  
  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
  
  menu "Power management options"
  
  source "kernel/power/Kconfig"
  
  config ARCH_SUSPEND_POSSIBLE
  	def_bool y
  
  config ARM64_CPU_SUSPEND
  	def_bool PM_SLEEP
  
  endmenu
  
  menu "CPU Power Management"
  
  source "drivers/cpuidle/Kconfig"
  
  endmenu
  
  source "net/Kconfig"
  
  source "drivers/Kconfig"
  
  source "fs/Kconfig"
  
  source "arch/arm64/kvm/Kconfig"
  
  source "arch/arm64/Kconfig.debug"
  
  source "security/Kconfig"
  
  source "crypto/Kconfig"
  
  source "lib/Kconfig"