Kconfig 5.2 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 ARM_GIC
  10. select BUILDTIME_EXTABLE_SORT
  11. select CLONE_BACKWARDS
  12. select COMMON_CLK
  13. select GENERIC_CLOCKEVENTS
  14. select GENERIC_IOMAP
  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
  24. select HAVE_DMA_ATTRS
  25. select HAVE_GENERIC_DMA_COHERENT
  26. select HAVE_GENERIC_HARDIRQS
  27. select HAVE_HW_BREAKPOINT if PERF_EVENTS
  28. select HAVE_MEMBLOCK
  29. select HAVE_PERF_EVENTS
  30. select IRQ_DOMAIN
  31. select MODULES_USE_ELF_RELA
  32. select NO_BOOTMEM
  33. select OF
  34. select OF_EARLY_FLATTREE
  35. select PERF_USE_VMALLOC
  36. select POWER_RESET
  37. select POWER_SUPPLY
  38. select RTC_LIB
  39. select SPARSE_IRQ
  40. select SYSCTL_EXCEPTION_TRACE
  41. help
  42. ARM 64-bit (AArch64) Linux support.
  43. config 64BIT
  44. def_bool y
  45. config ARCH_PHYS_ADDR_T_64BIT
  46. def_bool y
  47. config MMU
  48. def_bool y
  49. config NO_IOPORT
  50. def_bool y
  51. config STACKTRACE_SUPPORT
  52. def_bool y
  53. config LOCKDEP_SUPPORT
  54. def_bool y
  55. config TRACE_IRQFLAGS_SUPPORT
  56. def_bool y
  57. config GENERIC_LOCKBREAK
  58. def_bool y
  59. depends on SMP && PREEMPT
  60. config RWSEM_GENERIC_SPINLOCK
  61. def_bool y
  62. config GENERIC_HWEIGHT
  63. def_bool y
  64. config GENERIC_CSUM
  65. def_bool y
  66. config GENERIC_CALIBRATE_DELAY
  67. def_bool y
  68. config ZONE_DMA32
  69. def_bool y
  70. config ARCH_DMA_ADDR_T_64BIT
  71. def_bool y
  72. config NEED_DMA_MAP_STATE
  73. def_bool y
  74. config NEED_SG_DMA_LENGTH
  75. def_bool y
  76. config SWIOTLB
  77. def_bool y
  78. config IOMMU_HELPER
  79. def_bool SWIOTLB
  80. source "init/Kconfig"
  81. source "kernel/Kconfig.freezer"
  82. menu "Platform selection"
  83. config ARCH_VEXPRESS
  84. bool "ARMv8 software model (Versatile Express)"
  85. select ARCH_REQUIRE_GPIOLIB
  86. select COMMON_CLK_VERSATILE
  87. select POWER_RESET_VEXPRESS
  88. select VEXPRESS_CONFIG
  89. help
  90. This enables support for the ARMv8 software model (Versatile
  91. Express).
  92. endmenu
  93. menu "Bus support"
  94. config ARM_AMBA
  95. bool
  96. endmenu
  97. menu "Kernel Features"
  98. config ARM64_64K_PAGES
  99. bool "Enable 64KB pages support"
  100. help
  101. This feature enables 64KB pages support (4KB by default)
  102. allowing only two levels of page tables and faster TLB
  103. look-up. AArch32 emulation is not available when this feature
  104. is enabled.
  105. config SMP
  106. bool "Symmetric Multi-Processing"
  107. select USE_GENERIC_SMP_HELPERS
  108. help
  109. This enables support for systems with more than one CPU. If
  110. you say N here, the kernel will run on single and
  111. multiprocessor machines, but will use only one CPU of a
  112. multiprocessor machine. If you say Y here, the kernel will run
  113. on many, but not all, single processor machines. On a single
  114. processor machine, the kernel will run faster if you say N
  115. here.
  116. If you don't know what to do here, say N.
  117. config NR_CPUS
  118. int "Maximum number of CPUs (2-32)"
  119. range 2 32
  120. depends on SMP
  121. default "4"
  122. source kernel/Kconfig.preempt
  123. config HZ
  124. int
  125. default 100
  126. config ARCH_HAS_HOLES_MEMORYMODEL
  127. def_bool y if SPARSEMEM
  128. config ARCH_SPARSEMEM_ENABLE
  129. def_bool y
  130. select SPARSEMEM_VMEMMAP_ENABLE
  131. config ARCH_SPARSEMEM_DEFAULT
  132. def_bool ARCH_SPARSEMEM_ENABLE
  133. config ARCH_SELECT_MEMORY_MODEL
  134. def_bool ARCH_SPARSEMEM_ENABLE
  135. config HAVE_ARCH_PFN_VALID
  136. def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
  137. config HW_PERF_EVENTS
  138. bool "Enable hardware performance counter support for perf events"
  139. depends on PERF_EVENTS
  140. default y
  141. help
  142. Enable hardware performance counter support for perf events. If
  143. disabled, perf events will use software events only.
  144. source "mm/Kconfig"
  145. config XEN_DOM0
  146. def_bool y
  147. depends on XEN
  148. config XEN
  149. bool "Xen guest support on ARM64 (EXPERIMENTAL)"
  150. depends on ARM64 && OF
  151. help
  152. Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
  153. endmenu
  154. menu "Boot options"
  155. config CMDLINE
  156. string "Default kernel command string"
  157. default ""
  158. help
  159. Provide a set of default command-line options at build time by
  160. entering them here. As a minimum, you should specify the the
  161. root device (e.g. root=/dev/nfs).
  162. config CMDLINE_FORCE
  163. bool "Always use the default kernel command string"
  164. help
  165. Always use the default kernel command string, even if the boot
  166. loader passes other arguments to the kernel.
  167. This is useful if you cannot or don't want to change the
  168. command-line options your boot loader passes to the kernel.
  169. endmenu
  170. menu "Userspace binary formats"
  171. source "fs/Kconfig.binfmt"
  172. config COMPAT
  173. bool "Kernel support for 32-bit EL0"
  174. depends on !ARM64_64K_PAGES
  175. select COMPAT_BINFMT_ELF
  176. select HAVE_UID16
  177. select OLD_SIGSUSPEND3
  178. select COMPAT_OLD_SIGACTION
  179. help
  180. This option enables support for a 32-bit EL0 running under a 64-bit
  181. kernel at EL1. AArch32-specific components such as system calls,
  182. the user helper functions, VFP support and the ptrace interface are
  183. handled appropriately by the kernel.
  184. If you want to execute 32-bit userspace applications, say Y.
  185. config SYSVIPC_COMPAT
  186. def_bool y
  187. depends on COMPAT && SYSVIPC
  188. endmenu
  189. source "net/Kconfig"
  190. source "drivers/Kconfig"
  191. source "fs/Kconfig"
  192. source "arch/arm64/Kconfig.debug"
  193. source "security/Kconfig"
  194. source "crypto/Kconfig"
  195. source "lib/Kconfig"