Kconfig 13 KB

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  1. #
  2. # For a description of the syntax of this configuration file,
  3. # see Documentation/kbuild/kconfig-language.txt.
  4. #
  5. mainmenu "IA-64 Linux Kernel Configuration"
  6. source "init/Kconfig"
  7. menu "Processor type and features"
  8. config IA64
  9. bool
  10. default y
  11. help
  12. The Itanium Processor Family is Intel's 64-bit successor to
  13. the 32-bit X86 line. The IA-64 Linux project has a home
  14. page at <http://www.linuxia64.org/> and a mailing list at
  15. <linux-ia64@vger.kernel.org>.
  16. config 64BIT
  17. bool
  18. default y
  19. config MMU
  20. bool
  21. default y
  22. config SWIOTLB
  23. bool
  24. default y
  25. config RWSEM_XCHGADD_ALGORITHM
  26. bool
  27. default y
  28. config GENERIC_FIND_NEXT_BIT
  29. bool
  30. default y
  31. config GENERIC_CALIBRATE_DELAY
  32. bool
  33. default y
  34. config TIME_INTERPOLATION
  35. bool
  36. default y
  37. config DMI
  38. bool
  39. default y
  40. config EFI
  41. bool
  42. default y
  43. config GENERIC_IOMAP
  44. bool
  45. default y
  46. config SCHED_NO_NO_OMIT_FRAME_POINTER
  47. bool
  48. default y
  49. config IA64_UNCACHED_ALLOCATOR
  50. bool
  51. select GENERIC_ALLOCATOR
  52. config DMA_IS_DMA32
  53. bool
  54. default y
  55. choice
  56. prompt "System type"
  57. default IA64_GENERIC
  58. config IA64_GENERIC
  59. bool "generic"
  60. select ACPI
  61. select NUMA
  62. select ACPI_NUMA
  63. help
  64. This selects the system type of your hardware. A "generic" kernel
  65. will run on any supported IA-64 system. However, if you configure
  66. a kernel for your specific system, it will be faster and smaller.
  67. generic For any supported IA-64 system
  68. DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
  69. HP-zx1/sx1000 For HP systems
  70. HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
  71. SGI-SN2 For SGI Altix systems
  72. Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
  73. If you don't know what to do, choose "generic".
  74. config IA64_DIG
  75. bool "DIG-compliant"
  76. config IA64_HP_ZX1
  77. bool "HP-zx1/sx1000"
  78. help
  79. Build a kernel that runs on HP zx1 and sx1000 systems. This adds
  80. support for the HP I/O MMU.
  81. config IA64_HP_ZX1_SWIOTLB
  82. bool "HP-zx1/sx1000 with software I/O TLB"
  83. help
  84. Build a kernel that runs on HP zx1 and sx1000 systems even when they
  85. have broken PCI devices which cannot DMA to full 32 bits. Apart
  86. from support for the HP I/O MMU, this includes support for the software
  87. I/O TLB, which allows supporting the broken devices at the expense of
  88. wasting some kernel memory (about 2MB by default).
  89. config IA64_SGI_SN2
  90. bool "SGI-SN2"
  91. help
  92. Selecting this option will optimize the kernel for use on sn2 based
  93. systems, but the resulting kernel binary will not run on other
  94. types of ia64 systems. If you have an SGI Altix system, it's safe
  95. to select this option. If in doubt, select ia64 generic support
  96. instead.
  97. config IA64_HP_SIM
  98. bool "Ski-simulator"
  99. endchoice
  100. choice
  101. prompt "Processor type"
  102. default ITANIUM
  103. config ITANIUM
  104. bool "Itanium"
  105. help
  106. Select your IA-64 processor type. The default is Itanium.
  107. This choice is safe for all IA-64 systems, but may not perform
  108. optimally on systems with, say, Itanium 2 or newer processors.
  109. config MCKINLEY
  110. bool "Itanium 2"
  111. help
  112. Select this to configure for an Itanium 2 (McKinley) processor.
  113. endchoice
  114. choice
  115. prompt "Kernel page size"
  116. default IA64_PAGE_SIZE_16KB
  117. config IA64_PAGE_SIZE_4KB
  118. bool "4KB"
  119. help
  120. This lets you select the page size of the kernel. For best IA-64
  121. performance, a page size of 8KB or 16KB is recommended. For best
  122. IA-32 compatibility, a page size of 4KB should be selected (the vast
  123. majority of IA-32 binaries work perfectly fine with a larger page
  124. size). For Itanium 2 or newer systems, a page size of 64KB can also
  125. be selected.
  126. 4KB For best IA-32 compatibility
  127. 8KB For best IA-64 performance
  128. 16KB For best IA-64 performance
  129. 64KB Requires Itanium 2 or newer processor.
  130. If you don't know what to do, choose 16KB.
  131. config IA64_PAGE_SIZE_8KB
  132. bool "8KB"
  133. config IA64_PAGE_SIZE_16KB
  134. bool "16KB"
  135. config IA64_PAGE_SIZE_64KB
  136. depends on !ITANIUM
  137. bool "64KB"
  138. endchoice
  139. choice
  140. prompt "Page Table Levels"
  141. default PGTABLE_3
  142. config PGTABLE_3
  143. bool "3 Levels"
  144. config PGTABLE_4
  145. depends on !IA64_PAGE_SIZE_64KB
  146. bool "4 Levels"
  147. endchoice
  148. source kernel/Kconfig.hz
  149. config IA64_BRL_EMU
  150. bool
  151. depends on ITANIUM
  152. default y
  153. # align cache-sensitive data to 128 bytes
  154. config IA64_L1_CACHE_SHIFT
  155. int
  156. default "7" if MCKINLEY
  157. default "6" if ITANIUM
  158. config IA64_CYCLONE
  159. bool "Cyclone (EXA) Time Source support"
  160. help
  161. Say Y here to enable support for IBM EXA Cyclone time source.
  162. If you're unsure, answer N.
  163. config IOSAPIC
  164. bool
  165. depends on !IA64_HP_SIM
  166. default y
  167. config IA64_SGI_SN_XP
  168. tristate "Support communication between SGI SSIs"
  169. depends on IA64_GENERIC || IA64_SGI_SN2
  170. select IA64_UNCACHED_ALLOCATOR
  171. help
  172. An SGI machine can be divided into multiple Single System
  173. Images which act independently of each other and have
  174. hardware based memory protection from the others. Enabling
  175. this feature will allow for direct communication between SSIs
  176. based on a network adapter and DMA messaging.
  177. config FORCE_MAX_ZONEORDER
  178. int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
  179. range 11 17 if !HUGETLB_PAGE
  180. default "17" if HUGETLB_PAGE
  181. default "11"
  182. config SMP
  183. bool "Symmetric multi-processing support"
  184. help
  185. This enables support for systems with more than one CPU. If you have
  186. a system with only one CPU, say N. If you have a system with more
  187. than one CPU, say Y.
  188. If you say N here, the kernel will run on single and multiprocessor
  189. systems, but will use only one CPU of a multiprocessor system. If
  190. you say Y here, the kernel will run on many, but not all,
  191. single processor systems. On a single processor system, the kernel
  192. will run faster if you say N here.
  193. See also the <file:Documentation/smp.txt> and the SMP-HOWTO
  194. available at <http://www.tldp.org/docs.html#howto>.
  195. If you don't know what to do here, say N.
  196. config NR_CPUS
  197. int "Maximum number of CPUs (2-1024)"
  198. range 2 1024
  199. depends on SMP
  200. default "64"
  201. help
  202. You should set this to the number of CPUs in your system, but
  203. keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
  204. only use 2 CPUs on a >2 CPU system. Setting this to a value larger
  205. than 64 will cause the use of a CPU mask array, causing a small
  206. performance hit.
  207. config HOTPLUG_CPU
  208. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  209. depends on SMP && EXPERIMENTAL
  210. select HOTPLUG
  211. default n
  212. ---help---
  213. Say Y here to experiment with turning CPUs off and on. CPUs
  214. can be controlled through /sys/devices/system/cpu/cpu#.
  215. Say N if you want to disable CPU hotplug.
  216. config SCHED_SMT
  217. bool "SMT scheduler support"
  218. depends on SMP
  219. default off
  220. help
  221. Improves the CPU scheduler's decision making when dealing with
  222. Intel IA64 chips with MultiThreading at a cost of slightly increased
  223. overhead in some places. If unsure say N here.
  224. config PERMIT_BSP_REMOVE
  225. bool "Support removal of Bootstrap Processor"
  226. depends on HOTPLUG_CPU
  227. default n
  228. ---help---
  229. Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
  230. support.
  231. config FORCE_CPEI_RETARGET
  232. bool "Force assumption that CPEI can be re-targetted"
  233. depends on PERMIT_BSP_REMOVE
  234. default n
  235. ---help---
  236. Say Y if you need to force the assumption that CPEI can be re-targetted to
  237. any cpu in the system. This hint is available via ACPI 3.0 specifications.
  238. Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
  239. This option it useful to enable this feature on older BIOS's as well.
  240. You can also enable this by using boot command line option force_cpei=1.
  241. config PREEMPT
  242. bool "Preemptible Kernel"
  243. help
  244. This option reduces the latency of the kernel when reacting to
  245. real-time or interactive events by allowing a low priority process to
  246. be preempted even if it is in kernel mode executing a system call.
  247. This allows applications to run more reliably even when the system is
  248. under load.
  249. Say Y here if you are building a kernel for a desktop, embedded
  250. or real-time system. Say N if you are unsure.
  251. source "mm/Kconfig"
  252. config ARCH_SELECT_MEMORY_MODEL
  253. def_bool y
  254. config ARCH_DISCONTIGMEM_ENABLE
  255. def_bool y
  256. help
  257. Say Y to support efficient handling of discontiguous physical memory,
  258. for architectures which are either NUMA (Non-Uniform Memory Access)
  259. or have huge holes in the physical address space for other reasons.
  260. See <file:Documentation/vm/numa> for more.
  261. config ARCH_FLATMEM_ENABLE
  262. def_bool y
  263. config ARCH_SPARSEMEM_ENABLE
  264. def_bool y
  265. depends on ARCH_DISCONTIGMEM_ENABLE
  266. config ARCH_DISCONTIGMEM_DEFAULT
  267. def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
  268. depends on ARCH_DISCONTIGMEM_ENABLE
  269. config NUMA
  270. bool "NUMA support"
  271. depends on !IA64_HP_SIM && !FLATMEM
  272. default y if IA64_SGI_SN2
  273. help
  274. Say Y to compile the kernel to support NUMA (Non-Uniform Memory
  275. Access). This option is for configuring high-end multiprocessor
  276. server systems. If in doubt, say N.
  277. config NODES_SHIFT
  278. int "Max num nodes shift(3-10)"
  279. range 3 10
  280. default "8"
  281. depends on NEED_MULTIPLE_NODES
  282. help
  283. This option specifies the maximum number of nodes in your SSI system.
  284. MAX_NUMNODES will be 2^(This value).
  285. If in doubt, use the default.
  286. # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
  287. # VIRTUAL_MEM_MAP has been retained for historical reasons.
  288. config VIRTUAL_MEM_MAP
  289. bool "Virtual mem map"
  290. depends on !SPARSEMEM
  291. default y if !IA64_HP_SIM
  292. help
  293. Say Y to compile the kernel with support for a virtual mem map.
  294. This code also only takes effect if a memory hole of greater than
  295. 1 Gb is found during boot. You must turn this option on if you
  296. require the DISCONTIGMEM option for your machine. If you are
  297. unsure, say Y.
  298. config HOLES_IN_ZONE
  299. bool
  300. default y if VIRTUAL_MEM_MAP
  301. config HAVE_ARCH_EARLY_PFN_TO_NID
  302. def_bool y
  303. depends on NEED_MULTIPLE_NODES
  304. config IA32_SUPPORT
  305. bool "Support for Linux/x86 binaries"
  306. help
  307. IA-64 processors can execute IA-32 (X86) instructions. By
  308. saying Y here, the kernel will include IA-32 system call
  309. emulation support which makes it possible to transparently
  310. run IA-32 Linux binaries on an IA-64 Linux system.
  311. If in doubt, say Y.
  312. config COMPAT
  313. bool
  314. depends on IA32_SUPPORT
  315. default y
  316. config IA64_MCA_RECOVERY
  317. tristate "MCA recovery from errors other than TLB."
  318. config PERFMON
  319. bool "Performance monitor support"
  320. help
  321. Selects whether support for the IA-64 performance monitor hardware
  322. is included in the kernel. This makes some kernel data-structures a
  323. little bigger and slows down execution a bit, but it is generally
  324. a good idea to turn this on. If you're unsure, say Y.
  325. config IA64_PALINFO
  326. tristate "/proc/pal support"
  327. help
  328. If you say Y here, you are able to get PAL (Processor Abstraction
  329. Layer) information in /proc/pal. This contains useful information
  330. about the processors in your systems, such as cache and TLB sizes
  331. and the PAL firmware version in use.
  332. To use this option, you have to ensure that the "/proc file system
  333. support" (CONFIG_PROC_FS) is enabled, too.
  334. config SGI_SN
  335. def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
  336. source "drivers/firmware/Kconfig"
  337. source "fs/Kconfig.binfmt"
  338. endmenu
  339. menu "Power management and ACPI"
  340. source "kernel/power/Kconfig"
  341. source "drivers/acpi/Kconfig"
  342. if PM
  343. source "arch/ia64/kernel/cpufreq/Kconfig"
  344. endif
  345. endmenu
  346. if !IA64_HP_SIM
  347. menu "Bus options (PCI, PCMCIA)"
  348. config PCI
  349. bool "PCI support"
  350. help
  351. Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
  352. here unless you are using a simulator without PCI support.
  353. config PCI_DOMAINS
  354. bool
  355. default PCI
  356. source "drivers/pci/Kconfig"
  357. source "drivers/pci/hotplug/Kconfig"
  358. source "drivers/pcmcia/Kconfig"
  359. endmenu
  360. endif
  361. source "net/Kconfig"
  362. source "drivers/Kconfig"
  363. source "fs/Kconfig"
  364. source "lib/Kconfig"
  365. #
  366. # Use the generic interrupt handling code in kernel/irq/:
  367. #
  368. config GENERIC_HARDIRQS
  369. bool
  370. default y
  371. config GENERIC_IRQ_PROBE
  372. bool
  373. default y
  374. config GENERIC_PENDING_IRQ
  375. bool
  376. depends on GENERIC_HARDIRQS && SMP
  377. default y
  378. source "arch/ia64/hp/sim/Kconfig"
  379. menu "Instrumentation Support"
  380. depends on EXPERIMENTAL
  381. source "arch/ia64/oprofile/Kconfig"
  382. config KPROBES
  383. bool "Kprobes (EXPERIMENTAL)"
  384. depends on EXPERIMENTAL && MODULES
  385. help
  386. Kprobes allows you to trap at almost any kernel address and
  387. execute a callback function. register_kprobe() establishes
  388. a probepoint and specifies the callback. Kprobes is useful
  389. for kernel debugging, non-intrusive instrumentation and testing.
  390. If in doubt, say "N".
  391. endmenu
  392. source "arch/ia64/Kconfig.debug"
  393. source "security/Kconfig"
  394. source "crypto/Kconfig"