Kconfig 4.8 KB

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  1. config ARM64
  2. def_bool y
  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
  7. select ARM_AMBA
  8. select ARM_ARCH_TIMER
  9. select CLONE_BACKWARDS
  10. select COMMON_CLK
  11. select GENERIC_CLOCKEVENTS
  12. select GENERIC_HARDIRQS_NO_DEPRECATED
  13. select GENERIC_IOMAP
  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
  23. select HAVE_DMA_ATTRS
  24. select HAVE_GENERIC_DMA_COHERENT
  25. select HAVE_GENERIC_HARDIRQS
  26. select HAVE_HW_BREAKPOINT if PERF_EVENTS
  27. select HAVE_MEMBLOCK
  28. select HAVE_PERF_EVENTS
  29. select IRQ_DOMAIN
  30. select MODULES_USE_ELF_RELA
  31. select NO_BOOTMEM
  32. select OF
  33. select OF_EARLY_FLATTREE
  34. select PERF_USE_VMALLOC
  35. select RTC_LIB
  36. select SPARSE_IRQ
  37. select SYSCTL_EXCEPTION_TRACE
  38. help
  39. ARM 64-bit (AArch64) Linux support.
  40. config 64BIT
  41. def_bool y
  42. config ARCH_PHYS_ADDR_T_64BIT
  43. def_bool y
  44. config MMU
  45. def_bool y
  46. config NO_IOPORT
  47. def_bool y
  48. config STACKTRACE_SUPPORT
  49. def_bool y
  50. config LOCKDEP_SUPPORT
  51. def_bool y
  52. config TRACE_IRQFLAGS_SUPPORT
  53. def_bool y
  54. config GENERIC_LOCKBREAK
  55. def_bool y
  56. depends on SMP && PREEMPT
  57. config RWSEM_GENERIC_SPINLOCK
  58. def_bool y
  59. config GENERIC_HWEIGHT
  60. def_bool y
  61. config GENERIC_CSUM
  62. def_bool y
  63. config GENERIC_CALIBRATE_DELAY
  64. def_bool y
  65. config ZONE_DMA32
  66. def_bool y
  67. config ARCH_DMA_ADDR_T_64BIT
  68. def_bool y
  69. config NEED_DMA_MAP_STATE
  70. def_bool y
  71. config NEED_SG_DMA_LENGTH
  72. def_bool y
  73. config SWIOTLB
  74. def_bool y
  75. config IOMMU_HELPER
  76. def_bool SWIOTLB
  77. config GENERIC_GPIO
  78. bool
  79. source "init/Kconfig"
  80. source "kernel/Kconfig.freezer"
  81. menu "System Type"
  82. endmenu
  83. menu "Bus support"
  84. config ARM_AMBA
  85. bool
  86. endmenu
  87. menu "Kernel Features"
  88. source "kernel/time/Kconfig"
  89. config ARM64_64K_PAGES
  90. bool "Enable 64KB pages support"
  91. help
  92. This feature enables 64KB pages support (4KB by default)
  93. allowing only two levels of page tables and faster TLB
  94. look-up. AArch32 emulation is not available when this feature
  95. is enabled.
  96. config SMP
  97. bool "Symmetric Multi-Processing"
  98. select USE_GENERIC_SMP_HELPERS
  99. help
  100. This enables support for systems with more than one CPU. If
  101. you say N here, the kernel will run on single and
  102. multiprocessor machines, but will use only one CPU of a
  103. multiprocessor machine. If you say Y here, the kernel will run
  104. on many, but not all, single processor machines. On a single
  105. processor machine, the kernel will run faster if you say N
  106. here.
  107. If you don't know what to do here, say N.
  108. config NR_CPUS
  109. int "Maximum number of CPUs (2-32)"
  110. range 2 32
  111. depends on SMP
  112. default "4"
  113. source kernel/Kconfig.preempt
  114. config HZ
  115. int
  116. default 100
  117. config ARCH_HAS_HOLES_MEMORYMODEL
  118. def_bool y if SPARSEMEM
  119. config ARCH_SPARSEMEM_ENABLE
  120. def_bool y
  121. select SPARSEMEM_VMEMMAP_ENABLE
  122. config ARCH_SPARSEMEM_DEFAULT
  123. def_bool ARCH_SPARSEMEM_ENABLE
  124. config ARCH_SELECT_MEMORY_MODEL
  125. def_bool ARCH_SPARSEMEM_ENABLE
  126. config HAVE_ARCH_PFN_VALID
  127. def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
  128. config HW_PERF_EVENTS
  129. bool "Enable hardware performance counter support for perf events"
  130. depends on PERF_EVENTS
  131. default y
  132. help
  133. Enable hardware performance counter support for perf events. If
  134. disabled, perf events will use software events only.
  135. source "mm/Kconfig"
  136. endmenu
  137. menu "Boot options"
  138. config CMDLINE
  139. string "Default kernel command string"
  140. default ""
  141. help
  142. Provide a set of default command-line options at build time by
  143. entering them here. As a minimum, you should specify the the
  144. root device (e.g. root=/dev/nfs).
  145. config CMDLINE_FORCE
  146. bool "Always use the default kernel command string"
  147. help
  148. Always use the default kernel command string, even if the boot
  149. loader passes other arguments to the kernel.
  150. This is useful if you cannot or don't want to change the
  151. command-line options your boot loader passes to the kernel.
  152. endmenu
  153. menu "Userspace binary formats"
  154. source "fs/Kconfig.binfmt"
  155. config COMPAT
  156. bool "Kernel support for 32-bit EL0"
  157. depends on !ARM64_64K_PAGES
  158. select COMPAT_BINFMT_ELF
  159. select HAVE_UID16
  160. select OLD_SIGSUSPEND3
  161. select COMPAT_OLD_SIGACTION
  162. help
  163. This option enables support for a 32-bit EL0 running under a 64-bit
  164. kernel at EL1. AArch32-specific components such as system calls,
  165. the user helper functions, VFP support and the ptrace interface are
  166. handled appropriately by the kernel.
  167. If you want to execute 32-bit userspace applications, say Y.
  168. config SYSVIPC_COMPAT
  169. def_bool y
  170. depends on COMPAT && SYSVIPC
  171. endmenu
  172. source "net/Kconfig"
  173. source "drivers/Kconfig"
  174. source "fs/Kconfig"
  175. source "arch/arm64/Kconfig.debug"
  176. source "security/Kconfig"
  177. source "crypto/Kconfig"
  178. source "lib/Kconfig"