Kconfig 10 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_CALIBRATE_DELAY
  29. bool
  30. default y
  31. config TIME_INTERPOLATION
  32. bool
  33. default y
  34. config EFI
  35. bool
  36. default y
  37. config GENERIC_IOMAP
  38. bool
  39. default y
  40. config SCHED_NO_NO_OMIT_FRAME_POINTER
  41. bool
  42. default y
  43. config IA64_UNCACHED_ALLOCATOR
  44. bool
  45. select GENERIC_ALLOCATOR
  46. choice
  47. prompt "System type"
  48. default IA64_GENERIC
  49. config IA64_GENERIC
  50. bool "generic"
  51. select ACPI
  52. select NUMA
  53. select ACPI_NUMA
  54. select VIRTUAL_MEM_MAP
  55. select DISCONTIGMEM
  56. help
  57. This selects the system type of your hardware. A "generic" kernel
  58. will run on any supported IA-64 system. However, if you configure
  59. a kernel for your specific system, it will be faster and smaller.
  60. generic For any supported IA-64 system
  61. DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
  62. HP-zx1/sx1000 For HP systems
  63. HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
  64. SGI-SN2 For SGI Altix systems
  65. Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
  66. If you don't know what to do, choose "generic".
  67. config IA64_DIG
  68. bool "DIG-compliant"
  69. config IA64_HP_ZX1
  70. bool "HP-zx1/sx1000"
  71. help
  72. Build a kernel that runs on HP zx1 and sx1000 systems. This adds
  73. support for the HP I/O MMU.
  74. config IA64_HP_ZX1_SWIOTLB
  75. bool "HP-zx1/sx1000 with software I/O TLB"
  76. help
  77. Build a kernel that runs on HP zx1 and sx1000 systems even when they
  78. have broken PCI devices which cannot DMA to full 32 bits. Apart
  79. from support for the HP I/O MMU, this includes support for the software
  80. I/O TLB, which allows supporting the broken devices at the expense of
  81. wasting some kernel memory (about 2MB by default).
  82. config IA64_SGI_SN2
  83. bool "SGI-SN2"
  84. help
  85. Selecting this option will optimize the kernel for use on sn2 based
  86. systems, but the resulting kernel binary will not run on other
  87. types of ia64 systems. If you have an SGI Altix system, it's safe
  88. to select this option. If in doubt, select ia64 generic support
  89. instead.
  90. config IA64_HP_SIM
  91. bool "Ski-simulator"
  92. endchoice
  93. choice
  94. prompt "Processor type"
  95. default ITANIUM
  96. config ITANIUM
  97. bool "Itanium"
  98. help
  99. Select your IA-64 processor type. The default is Itanium.
  100. This choice is safe for all IA-64 systems, but may not perform
  101. optimally on systems with, say, Itanium 2 or newer processors.
  102. config MCKINLEY
  103. bool "Itanium 2"
  104. help
  105. Select this to configure for an Itanium 2 (McKinley) processor.
  106. endchoice
  107. choice
  108. prompt "Kernel page size"
  109. default IA64_PAGE_SIZE_16KB
  110. config IA64_PAGE_SIZE_4KB
  111. bool "4KB"
  112. help
  113. This lets you select the page size of the kernel. For best IA-64
  114. performance, a page size of 8KB or 16KB is recommended. For best
  115. IA-32 compatibility, a page size of 4KB should be selected (the vast
  116. majority of IA-32 binaries work perfectly fine with a larger page
  117. size). For Itanium 2 or newer systems, a page size of 64KB can also
  118. be selected.
  119. 4KB For best IA-32 compatibility
  120. 8KB For best IA-64 performance
  121. 16KB For best IA-64 performance
  122. 64KB Requires Itanium 2 or newer processor.
  123. If you don't know what to do, choose 16KB.
  124. config IA64_PAGE_SIZE_8KB
  125. bool "8KB"
  126. config IA64_PAGE_SIZE_16KB
  127. bool "16KB"
  128. config IA64_PAGE_SIZE_64KB
  129. depends on !ITANIUM
  130. bool "64KB"
  131. endchoice
  132. source kernel/Kconfig.hz
  133. config IA64_BRL_EMU
  134. bool
  135. depends on ITANIUM
  136. default y
  137. # align cache-sensitive data to 128 bytes
  138. config IA64_L1_CACHE_SHIFT
  139. int
  140. default "7" if MCKINLEY
  141. default "6" if ITANIUM
  142. # align cache-sensitive data to 64 bytes
  143. config NUMA
  144. bool "NUMA support"
  145. depends on !IA64_HP_SIM
  146. default y if IA64_SGI_SN2
  147. select ACPI_NUMA
  148. help
  149. Say Y to compile the kernel to support NUMA (Non-Uniform Memory
  150. Access). This option is for configuring high-end multiprocessor
  151. server systems. If in doubt, say N.
  152. config VIRTUAL_MEM_MAP
  153. bool "Virtual mem map"
  154. default y if !IA64_HP_SIM
  155. help
  156. Say Y to compile the kernel with support for a virtual mem map.
  157. This code also only takes effect if a memory hole of greater than
  158. 1 Gb is found during boot. You must turn this option on if you
  159. require the DISCONTIGMEM option for your machine. If you are
  160. unsure, say Y.
  161. config HOLES_IN_ZONE
  162. bool
  163. default y if VIRTUAL_MEM_MAP
  164. config ARCH_DISCONTIGMEM_ENABLE
  165. bool "Discontiguous memory support"
  166. depends on (IA64_DIG || IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB) && NUMA && VIRTUAL_MEM_MAP
  167. default y if (IA64_SGI_SN2 || IA64_GENERIC) && NUMA
  168. help
  169. Say Y to support efficient handling of discontiguous physical memory,
  170. for architectures which are either NUMA (Non-Uniform Memory Access)
  171. or have huge holes in the physical address space for other reasons.
  172. See <file:Documentation/vm/numa> for more.
  173. config IA64_CYCLONE
  174. bool "Cyclone (EXA) Time Source support"
  175. help
  176. Say Y here to enable support for IBM EXA Cyclone time source.
  177. If you're unsure, answer N.
  178. config IOSAPIC
  179. bool
  180. depends on !IA64_HP_SIM
  181. default y
  182. config IA64_SGI_SN_XP
  183. tristate "Support communication between SGI SSIs"
  184. select IA64_UNCACHED_ALLOCATOR
  185. help
  186. An SGI machine can be divided into multiple Single System
  187. Images which act independently of each other and have
  188. hardware based memory protection from the others. Enabling
  189. this feature will allow for direct communication between SSIs
  190. based on a network adapter and DMA messaging.
  191. config FORCE_MAX_ZONEORDER
  192. int
  193. default "18"
  194. config SMP
  195. bool "Symmetric multi-processing support"
  196. help
  197. This enables support for systems with more than one CPU. If you have
  198. a system with only one CPU, say N. If you have a system with more
  199. than one CPU, say Y.
  200. If you say N here, the kernel will run on single and multiprocessor
  201. systems, but will use only one CPU of a multiprocessor system. If
  202. you say Y here, the kernel will run on many, but not all,
  203. single processor systems. On a single processor system, the kernel
  204. will run faster if you say N here.
  205. See also the <file:Documentation/smp.txt> and the SMP-HOWTO
  206. available at <http://www.tldp.org/docs.html#howto>.
  207. If you don't know what to do here, say N.
  208. config NR_CPUS
  209. int "Maximum number of CPUs (2-512)"
  210. range 2 512
  211. depends on SMP
  212. default "64"
  213. help
  214. You should set this to the number of CPUs in your system, but
  215. keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
  216. only use 2 CPUs on a >2 CPU system. Setting this to a value larger
  217. than 64 will cause the use of a CPU mask array, causing a small
  218. performance hit.
  219. config HOTPLUG_CPU
  220. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  221. depends on SMP && EXPERIMENTAL
  222. select HOTPLUG
  223. default n
  224. ---help---
  225. Say Y here to experiment with turning CPUs off and on. CPUs
  226. can be controlled through /sys/devices/system/cpu/cpu#.
  227. Say N if you want to disable CPU hotplug.
  228. config SCHED_SMT
  229. bool "SMT scheduler support"
  230. depends on SMP
  231. default off
  232. help
  233. Improves the CPU scheduler's decision making when dealing with
  234. Intel IA64 chips with MultiThreading at a cost of slightly increased
  235. overhead in some places. If unsure say N here.
  236. config PREEMPT
  237. bool "Preemptible Kernel"
  238. help
  239. This option reduces the latency of the kernel when reacting to
  240. real-time or interactive events by allowing a low priority process to
  241. be preempted even if it is in kernel mode executing a system call.
  242. This allows applications to run more reliably even when the system is
  243. under load.
  244. Say Y here if you are building a kernel for a desktop, embedded
  245. or real-time system. Say N if you are unsure.
  246. source "mm/Kconfig"
  247. config HAVE_DEC_LOCK
  248. bool
  249. depends on (SMP || PREEMPT)
  250. default y
  251. config IA32_SUPPORT
  252. bool "Support for Linux/x86 binaries"
  253. help
  254. IA-64 processors can execute IA-32 (X86) instructions. By
  255. saying Y here, the kernel will include IA-32 system call
  256. emulation support which makes it possible to transparently
  257. run IA-32 Linux binaries on an IA-64 Linux system.
  258. If in doubt, say Y.
  259. config COMPAT
  260. bool
  261. depends on IA32_SUPPORT
  262. default y
  263. config IA64_MCA_RECOVERY
  264. tristate "MCA recovery from errors other than TLB."
  265. config PERFMON
  266. bool "Performance monitor support"
  267. help
  268. Selects whether support for the IA-64 performance monitor hardware
  269. is included in the kernel. This makes some kernel data-structures a
  270. little bigger and slows down execution a bit, but it is generally
  271. a good idea to turn this on. If you're unsure, say Y.
  272. config IA64_PALINFO
  273. tristate "/proc/pal support"
  274. help
  275. If you say Y here, you are able to get PAL (Processor Abstraction
  276. Layer) information in /proc/pal. This contains useful information
  277. about the processors in your systems, such as cache and TLB sizes
  278. and the PAL firmware version in use.
  279. To use this option, you have to ensure that the "/proc file system
  280. support" (CONFIG_PROC_FS) is enabled, too.
  281. source "drivers/firmware/Kconfig"
  282. source "fs/Kconfig.binfmt"
  283. endmenu
  284. menu "Power management and ACPI"
  285. source "kernel/power/Kconfig"
  286. source "drivers/acpi/Kconfig"
  287. if PM
  288. source "arch/ia64/kernel/cpufreq/Kconfig"
  289. endif
  290. endmenu
  291. if !IA64_HP_SIM
  292. menu "Bus options (PCI, PCMCIA)"
  293. config PCI
  294. bool "PCI support"
  295. help
  296. Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
  297. here unless you are using a simulator without PCI support.
  298. config PCI_DOMAINS
  299. bool
  300. default PCI
  301. source "drivers/pci/Kconfig"
  302. source "drivers/pci/hotplug/Kconfig"
  303. source "drivers/pcmcia/Kconfig"
  304. endmenu
  305. endif
  306. source "net/Kconfig"
  307. source "drivers/Kconfig"
  308. source "fs/Kconfig"
  309. source "lib/Kconfig"
  310. #
  311. # Use the generic interrupt handling code in kernel/irq/:
  312. #
  313. config GENERIC_HARDIRQS
  314. bool
  315. default y
  316. config GENERIC_IRQ_PROBE
  317. bool
  318. default y
  319. config GENERIC_PENDING_IRQ
  320. bool
  321. depends on GENERIC_HARDIRQS && SMP
  322. default y
  323. source "arch/ia64/hp/sim/Kconfig"
  324. source "arch/ia64/oprofile/Kconfig"
  325. source "arch/ia64/Kconfig.debug"
  326. source "security/Kconfig"
  327. source "crypto/Kconfig"