Kconfig 11 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482
  1. #
  2. # For a description of the syntax of this configuration file,
  3. # see Documentation/kbuild/kconfig-language.txt.
  4. #
  5. config 64BIT
  6. def_bool y
  7. config MMU
  8. bool
  9. default y
  10. config UID16
  11. bool
  12. config RWSEM_GENERIC_SPINLOCK
  13. bool
  14. config RWSEM_XCHGADD_ALGORITHM
  15. bool
  16. default y
  17. config GENERIC_CALIBRATE_DELAY
  18. bool
  19. default y
  20. config GENERIC_ISA_DMA
  21. bool
  22. default y
  23. config HAVE_DEC_LOCK
  24. bool
  25. default y
  26. config EARLY_PRINTK
  27. bool
  28. default y
  29. config COMPAT
  30. bool
  31. default y
  32. config SCHED_NO_NO_OMIT_FRAME_POINTER
  33. bool
  34. default y
  35. # We optimistically allocate largepages from the VM, so make the limit
  36. # large enough (16MB). This badly named config option is actually
  37. # max order + 1
  38. config FORCE_MAX_ZONEORDER
  39. int
  40. default "13"
  41. source "init/Kconfig"
  42. config SYSVIPC_COMPAT
  43. bool
  44. depends on COMPAT && SYSVIPC
  45. default y
  46. menu "Platform support"
  47. choice
  48. prompt "Platform Type"
  49. default PPC_MULTIPLATFORM
  50. config PPC_ISERIES
  51. bool "IBM Legacy iSeries"
  52. config PPC_MULTIPLATFORM
  53. bool "Generic"
  54. endchoice
  55. config PPC_PSERIES
  56. depends on PPC_MULTIPLATFORM
  57. bool " IBM pSeries & new iSeries"
  58. default y
  59. config PPC_BPA
  60. bool " Broadband Processor Architecture"
  61. depends on PPC_MULTIPLATFORM
  62. config PPC_PMAC
  63. depends on PPC_MULTIPLATFORM
  64. bool " Apple G5 based machines"
  65. default y
  66. select U3_DART
  67. config PPC_MAPLE
  68. depends on PPC_MULTIPLATFORM
  69. bool " Maple 970FX Evaluation Board"
  70. select U3_DART
  71. select MPIC_BROKEN_U3
  72. default n
  73. help
  74. This option enables support for the Maple 970FX Evaluation Board.
  75. For more informations, refer to <http://www.970eval.com>
  76. config PPC
  77. bool
  78. default y
  79. config PPC64
  80. bool
  81. default y
  82. config PPC_OF
  83. depends on PPC_MULTIPLATFORM
  84. bool
  85. default y
  86. config XICS
  87. depends on PPC_PSERIES
  88. bool
  89. default y
  90. config MPIC
  91. depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE
  92. bool
  93. default y
  94. config BPA_IIC
  95. depends on PPC_BPA
  96. bool
  97. default y
  98. # VMX is pSeries only for now until somebody writes the iSeries
  99. # exception vectors for it
  100. config ALTIVEC
  101. bool "Support for VMX (Altivec) vector unit"
  102. depends on PPC_MULTIPLATFORM
  103. default y
  104. config PPC_SPLPAR
  105. depends on PPC_PSERIES
  106. bool "Support for shared-processor logical partitions"
  107. default n
  108. help
  109. Enabling this option will make the kernel run more efficiently
  110. on logically-partitioned pSeries systems which use shared
  111. processors, that is, which share physical processors between
  112. two or more partitions.
  113. config IBMVIO
  114. depends on PPC_PSERIES || PPC_ISERIES
  115. bool
  116. default y
  117. config U3_DART
  118. bool
  119. depends on PPC_MULTIPLATFORM
  120. default n
  121. config MPIC_BROKEN_U3
  122. bool
  123. depends on PPC_MAPLE
  124. default y
  125. config PPC_PMAC64
  126. bool
  127. depends on PPC_PMAC
  128. default y
  129. config BOOTX_TEXT
  130. bool "Support for early boot text console"
  131. depends PPC_OF
  132. help
  133. Say Y here to see progress messages from the boot firmware in text
  134. mode. Requires an Open Firmware compatible video card.
  135. config POWER4_ONLY
  136. bool "Optimize for POWER4"
  137. default n
  138. ---help---
  139. Cause the compiler to optimize for POWER4 processors. The resulting
  140. binary will not work on POWER3 or RS64 processors when compiled with
  141. binutils 2.15 or later.
  142. config IOMMU_VMERGE
  143. bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
  144. depends on EXPERIMENTAL
  145. default n
  146. help
  147. Cause IO segments sent to a device for DMA to be merged virtually
  148. by the IOMMU when they happen to have been allocated contiguously.
  149. This doesn't add pressure to the IOMMU allocator. However, some
  150. drivers don't support getting large merged segments coming back
  151. from *_map_sg(). Say Y if you know the drivers you are using are
  152. properly handling this case.
  153. config SMP
  154. bool "Symmetric multi-processing support"
  155. ---help---
  156. This enables support for systems with more than one CPU. If you have
  157. a system with only one CPU, say N. If you have a system with more
  158. than one CPU, say Y.
  159. If you say N here, the kernel will run on single and multiprocessor
  160. machines, but will use only one CPU of a multiprocessor machine. If
  161. you say Y here, the kernel will run on single-processor machines.
  162. On a single-processor machine, the kernel will run faster if you say
  163. N here.
  164. If you don't know what to do here, say Y.
  165. config NR_CPUS
  166. int "Maximum number of CPUs (2-128)"
  167. range 2 128
  168. depends on SMP
  169. default "32"
  170. config HMT
  171. bool "Hardware multithreading"
  172. depends on SMP && PPC_PSERIES && BROKEN
  173. help
  174. This option enables hardware multithreading on RS64 cpus.
  175. pSeries systems p620 and p660 have such a cpu type.
  176. config ARCH_SELECT_MEMORY_MODEL
  177. def_bool y
  178. config ARCH_FLATMEM_ENABLE
  179. def_bool y
  180. depends on !NUMA
  181. config ARCH_DISCONTIGMEM_ENABLE
  182. def_bool y
  183. depends on SMP && PPC_PSERIES
  184. config ARCH_DISCONTIGMEM_DEFAULT
  185. def_bool y
  186. depends on ARCH_DISCONTIGMEM_ENABLE
  187. config ARCH_FLATMEM_ENABLE
  188. def_bool y
  189. config ARCH_SPARSEMEM_ENABLE
  190. def_bool y
  191. depends on ARCH_DISCONTIGMEM_ENABLE
  192. source "mm/Kconfig"
  193. config HAVE_ARCH_EARLY_PFN_TO_NID
  194. def_bool y
  195. depends on NEED_MULTIPLE_NODES
  196. # Some NUMA nodes have memory ranges that span
  197. # other nodes. Even though a pfn is valid and
  198. # between a node's start and end pfns, it may not
  199. # reside on that node.
  200. #
  201. # This is a relatively temporary hack that should
  202. # be able to go away when sparsemem is fully in
  203. # place
  204. config NODES_SPAN_OTHER_NODES
  205. def_bool y
  206. depends on NEED_MULTIPLE_NODES
  207. config NUMA
  208. bool "NUMA support"
  209. default y if DISCONTIGMEM || SPARSEMEM
  210. config SCHED_SMT
  211. bool "SMT (Hyperthreading) scheduler support"
  212. depends on SMP
  213. default off
  214. help
  215. SMT scheduler support improves the CPU scheduler's decision making
  216. when dealing with POWER5 cpus at a cost of slightly increased
  217. overhead in some places. If unsure say N here.
  218. config PREEMPT
  219. bool "Preemptible Kernel"
  220. help
  221. This option reduces the latency of the kernel when reacting to
  222. real-time or interactive events by allowing a low priority process to
  223. be preempted even if it is in kernel mode executing a system call.
  224. Say Y here if you are building a kernel for a desktop, embedded
  225. or real-time system. Say N if you are unsure.
  226. config PREEMPT_BKL
  227. bool "Preempt The Big Kernel Lock"
  228. depends on PREEMPT
  229. default y
  230. help
  231. This option reduces the latency of the kernel by making the
  232. big kernel lock preemptible.
  233. Say Y here if you are building a kernel for a desktop system.
  234. Say N if you are unsure.
  235. config EEH
  236. bool "PCI Extended Error Handling (EEH)" if EMBEDDED
  237. depends on PPC_PSERIES
  238. default y if !EMBEDDED
  239. #
  240. # Use the generic interrupt handling code in kernel/irq/:
  241. #
  242. config GENERIC_HARDIRQS
  243. bool
  244. default y
  245. config MSCHUNKS
  246. bool
  247. depends on PPC_ISERIES
  248. default y
  249. config PPC_RTAS
  250. bool
  251. depends on PPC_PSERIES || PPC_BPA
  252. default y
  253. config RTAS_PROC
  254. bool "Proc interface to RTAS"
  255. depends on PPC_RTAS
  256. default y
  257. config RTAS_FLASH
  258. tristate "Firmware flash interface"
  259. depends on RTAS_PROC
  260. config SCANLOG
  261. tristate "Scanlog dump interface"
  262. depends on RTAS_PROC && PPC_PSERIES
  263. config LPARCFG
  264. tristate "LPAR Configuration Data"
  265. depends on PPC_PSERIES || PPC_ISERIES
  266. help
  267. Provide system capacity information via human readable
  268. <key word>=<value> pairs through a /proc/ppc64/lparcfg interface.
  269. config SECCOMP
  270. bool "Enable seccomp to safely compute untrusted bytecode"
  271. depends on PROC_FS
  272. default y
  273. help
  274. This kernel feature is useful for number crunching applications
  275. that may need to compute untrusted bytecode during their
  276. execution. By using pipes or other transports made available to
  277. the process as file descriptors supporting the read/write
  278. syscalls, it's possible to isolate those applications in
  279. their own address space using seccomp. Once seccomp is
  280. enabled via /proc/<pid>/seccomp, it cannot be disabled
  281. and the task is only allowed to execute a few safe syscalls
  282. defined by each seccomp mode.
  283. If unsure, say Y. Only embedded should say N here.
  284. endmenu
  285. config ISA_DMA_API
  286. bool
  287. default y
  288. menu "General setup"
  289. config ISA
  290. bool
  291. help
  292. Find out whether you have ISA slots on your motherboard. ISA is the
  293. name of a bus system, i.e. the way the CPU talks to the other stuff
  294. inside your box. If you have an Apple machine, say N here; if you
  295. have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
  296. you have an embedded board, consult your board documentation.
  297. config SBUS
  298. bool
  299. config MCA
  300. bool
  301. config EISA
  302. bool
  303. config PCI
  304. bool "support for PCI devices" if (EMBEDDED && PPC_ISERIES)
  305. default y
  306. help
  307. Find out whether your system includes a PCI bus. PCI is the name of
  308. a bus system, i.e. the way the CPU talks to the other stuff inside
  309. your box. If you say Y here, the kernel will include drivers and
  310. infrastructure code to support PCI bus devices.
  311. config PCI_DOMAINS
  312. bool
  313. default PCI
  314. source "fs/Kconfig.binfmt"
  315. source "drivers/pci/Kconfig"
  316. config HOTPLUG_CPU
  317. bool "Support for hot-pluggable CPUs"
  318. depends on SMP && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
  319. select HOTPLUG
  320. ---help---
  321. Say Y here to be able to turn CPUs off and on.
  322. Say N if you are unsure.
  323. source "drivers/pcmcia/Kconfig"
  324. source "drivers/pci/hotplug/Kconfig"
  325. config PROC_DEVICETREE
  326. bool "Support for Open Firmware device tree in /proc"
  327. depends on !PPC_ISERIES
  328. help
  329. This option adds a device-tree directory under /proc which contains
  330. an image of the device tree that the kernel copies from Open
  331. Firmware. If unsure, say Y here.
  332. config CMDLINE_BOOL
  333. bool "Default bootloader kernel arguments"
  334. depends on !PPC_ISERIES
  335. config CMDLINE
  336. string "Initial kernel command string"
  337. depends on CMDLINE_BOOL
  338. default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
  339. help
  340. On some platforms, there is currently no way for the boot loader to
  341. pass arguments to the kernel. For these platforms, you can supply
  342. some command-line options at build time by entering them here. In
  343. most cases you will need to specify the root device here.
  344. endmenu
  345. source "drivers/Kconfig"
  346. source "fs/Kconfig"
  347. menu "iSeries device drivers"
  348. depends on PPC_ISERIES
  349. config VIOCONS
  350. tristate "iSeries Virtual Console Support"
  351. config VIODASD
  352. tristate "iSeries Virtual I/O disk support"
  353. help
  354. If you are running on an iSeries system and you want to use
  355. virtual disks created and managed by OS/400, say Y.
  356. config VIOCD
  357. tristate "iSeries Virtual I/O CD support"
  358. help
  359. If you are running Linux on an IBM iSeries system and you want to
  360. read a CD drive owned by OS/400, say Y here.
  361. config VIOTAPE
  362. tristate "iSeries Virtual Tape Support"
  363. help
  364. If you are running Linux on an iSeries system and you want Linux
  365. to read and/or write a tape drive owned by OS/400, say Y here.
  366. endmenu
  367. config VIOPATH
  368. bool
  369. depends on VIOCONS || VIODASD || VIOCD || VIOTAPE || VETH
  370. default y
  371. source "arch/ppc64/oprofile/Kconfig"
  372. source "arch/ppc64/Kconfig.debug"
  373. source "security/Kconfig"
  374. config KEYS_COMPAT
  375. bool
  376. depends on COMPAT && KEYS
  377. default y
  378. source "crypto/Kconfig"
  379. source "lib/Kconfig"