Kconfig 15 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593
  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. select PCI if (!IA64_HP_SIM)
  11. select ACPI if (!IA64_HP_SIM)
  12. select PM if (!IA64_HP_SIM)
  13. select ARCH_SUPPORTS_MSI
  14. default y
  15. help
  16. The Itanium Processor Family is Intel's 64-bit successor to
  17. the 32-bit X86 line. The IA-64 Linux project has a home
  18. page at <http://www.linuxia64.org/> and a mailing list at
  19. <linux-ia64@vger.kernel.org>.
  20. config 64BIT
  21. bool
  22. select ATA_NONSTANDARD if ATA
  23. default y
  24. config ZONE_DMA
  25. def_bool y
  26. depends on !IA64_SGI_SN2
  27. config MMU
  28. bool
  29. default y
  30. config SWIOTLB
  31. bool
  32. config RWSEM_XCHGADD_ALGORITHM
  33. bool
  34. default y
  35. config ARCH_HAS_ILOG2_U32
  36. bool
  37. default n
  38. config ARCH_HAS_ILOG2_U64
  39. bool
  40. default n
  41. config GENERIC_FIND_NEXT_BIT
  42. bool
  43. default y
  44. config GENERIC_CALIBRATE_DELAY
  45. bool
  46. default y
  47. config TIME_INTERPOLATION
  48. bool
  49. default y
  50. config DMI
  51. bool
  52. default y
  53. config EFI
  54. bool
  55. default y
  56. config GENERIC_IOMAP
  57. bool
  58. default y
  59. config SCHED_NO_NO_OMIT_FRAME_POINTER
  60. bool
  61. default y
  62. config IA64_UNCACHED_ALLOCATOR
  63. bool
  64. select GENERIC_ALLOCATOR
  65. config AUDIT_ARCH
  66. bool
  67. default y
  68. choice
  69. prompt "System type"
  70. default IA64_GENERIC
  71. config IA64_GENERIC
  72. bool "generic"
  73. select NUMA
  74. select ACPI_NUMA
  75. select SWIOTLB
  76. help
  77. This selects the system type of your hardware. A "generic" kernel
  78. will run on any supported IA-64 system. However, if you configure
  79. a kernel for your specific system, it will be faster and smaller.
  80. generic For any supported IA-64 system
  81. DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
  82. HP-zx1/sx1000 For HP systems
  83. HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
  84. SGI-SN2 For SGI Altix systems
  85. Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
  86. If you don't know what to do, choose "generic".
  87. config IA64_DIG
  88. bool "DIG-compliant"
  89. select SWIOTLB
  90. config IA64_HP_ZX1
  91. bool "HP-zx1/sx1000"
  92. help
  93. Build a kernel that runs on HP zx1 and sx1000 systems. This adds
  94. support for the HP I/O MMU.
  95. config IA64_HP_ZX1_SWIOTLB
  96. bool "HP-zx1/sx1000 with software I/O TLB"
  97. select SWIOTLB
  98. help
  99. Build a kernel that runs on HP zx1 and sx1000 systems even when they
  100. have broken PCI devices which cannot DMA to full 32 bits. Apart
  101. from support for the HP I/O MMU, this includes support for the software
  102. I/O TLB, which allows supporting the broken devices at the expense of
  103. wasting some kernel memory (about 2MB by default).
  104. config IA64_SGI_SN2
  105. bool "SGI-SN2"
  106. help
  107. Selecting this option will optimize the kernel for use on sn2 based
  108. systems, but the resulting kernel binary will not run on other
  109. types of ia64 systems. If you have an SGI Altix system, it's safe
  110. to select this option. If in doubt, select ia64 generic support
  111. instead.
  112. config IA64_HP_SIM
  113. bool "Ski-simulator"
  114. select SWIOTLB
  115. endchoice
  116. choice
  117. prompt "Processor type"
  118. default ITANIUM
  119. config ITANIUM
  120. bool "Itanium"
  121. help
  122. Select your IA-64 processor type. The default is Itanium.
  123. This choice is safe for all IA-64 systems, but may not perform
  124. optimally on systems with, say, Itanium 2 or newer processors.
  125. config MCKINLEY
  126. bool "Itanium 2"
  127. help
  128. Select this to configure for an Itanium 2 (McKinley) processor.
  129. endchoice
  130. choice
  131. prompt "Kernel page size"
  132. default IA64_PAGE_SIZE_16KB
  133. config IA64_PAGE_SIZE_4KB
  134. bool "4KB"
  135. help
  136. This lets you select the page size of the kernel. For best IA-64
  137. performance, a page size of 8KB or 16KB is recommended. For best
  138. IA-32 compatibility, a page size of 4KB should be selected (the vast
  139. majority of IA-32 binaries work perfectly fine with a larger page
  140. size). For Itanium 2 or newer systems, a page size of 64KB can also
  141. be selected.
  142. 4KB For best IA-32 compatibility
  143. 8KB For best IA-64 performance
  144. 16KB For best IA-64 performance
  145. 64KB Requires Itanium 2 or newer processor.
  146. If you don't know what to do, choose 16KB.
  147. config IA64_PAGE_SIZE_8KB
  148. bool "8KB"
  149. config IA64_PAGE_SIZE_16KB
  150. bool "16KB"
  151. config IA64_PAGE_SIZE_64KB
  152. depends on !ITANIUM
  153. bool "64KB"
  154. endchoice
  155. choice
  156. prompt "Page Table Levels"
  157. default PGTABLE_3
  158. config PGTABLE_3
  159. bool "3 Levels"
  160. config PGTABLE_4
  161. depends on !IA64_PAGE_SIZE_64KB
  162. bool "4 Levels"
  163. endchoice
  164. source kernel/Kconfig.hz
  165. config IA64_BRL_EMU
  166. bool
  167. depends on ITANIUM
  168. default y
  169. # align cache-sensitive data to 128 bytes
  170. config IA64_L1_CACHE_SHIFT
  171. int
  172. default "7" if MCKINLEY
  173. default "6" if ITANIUM
  174. config IA64_CYCLONE
  175. bool "Cyclone (EXA) Time Source support"
  176. help
  177. Say Y here to enable support for IBM EXA Cyclone time source.
  178. If you're unsure, answer N.
  179. config IOSAPIC
  180. bool
  181. depends on !IA64_HP_SIM
  182. default y
  183. config IA64_SGI_SN_XP
  184. tristate "Support communication between SGI SSIs"
  185. depends on IA64_GENERIC || IA64_SGI_SN2
  186. select IA64_UNCACHED_ALLOCATOR
  187. help
  188. An SGI machine can be divided into multiple Single System
  189. Images which act independently of each other and have
  190. hardware based memory protection from the others. Enabling
  191. this feature will allow for direct communication between SSIs
  192. based on a network adapter and DMA messaging.
  193. config FORCE_MAX_ZONEORDER
  194. int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
  195. range 11 17 if !HUGETLB_PAGE
  196. default "17" if HUGETLB_PAGE
  197. default "11"
  198. config SMP
  199. bool "Symmetric multi-processing support"
  200. help
  201. This enables support for systems with more than one CPU. If you have
  202. a system with only one CPU, say N. If you have a system with more
  203. than one CPU, say Y.
  204. If you say N here, the kernel will run on single and multiprocessor
  205. systems, but will use only one CPU of a multiprocessor system. If
  206. you say Y here, the kernel will run on many, but not all,
  207. single processor systems. On a single processor system, the kernel
  208. will run faster if you say N here.
  209. See also the <file:Documentation/smp.txt> and the SMP-HOWTO
  210. available at <http://www.tldp.org/docs.html#howto>.
  211. If you don't know what to do here, say N.
  212. config NR_CPUS
  213. int "Maximum number of CPUs (2-1024)"
  214. range 2 1024
  215. depends on SMP
  216. default "1024"
  217. help
  218. You should set this to the number of CPUs in your system, but
  219. keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
  220. only use 2 CPUs on a >2 CPU system. Setting this to a value larger
  221. than 64 will cause the use of a CPU mask array, causing a small
  222. performance hit.
  223. config HOTPLUG_CPU
  224. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  225. depends on SMP && EXPERIMENTAL
  226. select HOTPLUG
  227. default n
  228. ---help---
  229. Say Y here to experiment with turning CPUs off and on. CPUs
  230. can be controlled through /sys/devices/system/cpu/cpu#.
  231. Say N if you want to disable CPU hotplug.
  232. config ARCH_ENABLE_MEMORY_HOTPLUG
  233. def_bool y
  234. config SCHED_SMT
  235. bool "SMT scheduler support"
  236. depends on SMP
  237. help
  238. Improves the CPU scheduler's decision making when dealing with
  239. Intel IA64 chips with MultiThreading at a cost of slightly increased
  240. overhead in some places. If unsure say N here.
  241. config PERMIT_BSP_REMOVE
  242. bool "Support removal of Bootstrap Processor"
  243. depends on HOTPLUG_CPU
  244. default n
  245. ---help---
  246. Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
  247. support.
  248. config FORCE_CPEI_RETARGET
  249. bool "Force assumption that CPEI can be re-targetted"
  250. depends on PERMIT_BSP_REMOVE
  251. default n
  252. ---help---
  253. Say Y if you need to force the assumption that CPEI can be re-targetted to
  254. any cpu in the system. This hint is available via ACPI 3.0 specifications.
  255. Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
  256. This option it useful to enable this feature on older BIOS's as well.
  257. You can also enable this by using boot command line option force_cpei=1.
  258. config PREEMPT
  259. bool "Preemptible Kernel"
  260. help
  261. This option reduces the latency of the kernel when reacting to
  262. real-time or interactive events by allowing a low priority process to
  263. be preempted even if it is in kernel mode executing a system call.
  264. This allows applications to run more reliably even when the system is
  265. under load.
  266. Say Y here if you are building a kernel for a desktop, embedded
  267. or real-time system. Say N if you are unsure.
  268. source "mm/Kconfig"
  269. config ARCH_SELECT_MEMORY_MODEL
  270. def_bool y
  271. config ARCH_DISCONTIGMEM_ENABLE
  272. def_bool y
  273. help
  274. Say Y to support efficient handling of discontiguous physical memory,
  275. for architectures which are either NUMA (Non-Uniform Memory Access)
  276. or have huge holes in the physical address space for other reasons.
  277. See <file:Documentation/vm/numa> for more.
  278. config ARCH_FLATMEM_ENABLE
  279. def_bool y
  280. config ARCH_SPARSEMEM_ENABLE
  281. def_bool y
  282. depends on ARCH_DISCONTIGMEM_ENABLE
  283. config ARCH_DISCONTIGMEM_DEFAULT
  284. def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
  285. depends on ARCH_DISCONTIGMEM_ENABLE
  286. config NUMA
  287. bool "NUMA support"
  288. depends on !IA64_HP_SIM && !FLATMEM
  289. default y if IA64_SGI_SN2
  290. select ACPI_NUMA if ACPI
  291. help
  292. Say Y to compile the kernel to support NUMA (Non-Uniform Memory
  293. Access). This option is for configuring high-end multiprocessor
  294. server systems. If in doubt, say N.
  295. config NODES_SHIFT
  296. int "Max num nodes shift(3-10)"
  297. range 3 10
  298. default "10"
  299. depends on NEED_MULTIPLE_NODES
  300. help
  301. This option specifies the maximum number of nodes in your SSI system.
  302. MAX_NUMNODES will be 2^(This value).
  303. If in doubt, use the default.
  304. config ARCH_POPULATES_NODE_MAP
  305. def_bool y
  306. # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
  307. # VIRTUAL_MEM_MAP has been retained for historical reasons.
  308. config VIRTUAL_MEM_MAP
  309. bool "Virtual mem map"
  310. depends on !SPARSEMEM
  311. default y if !IA64_HP_SIM
  312. help
  313. Say Y to compile the kernel with support for a virtual mem map.
  314. This code also only takes effect if a memory hole of greater than
  315. 1 Gb is found during boot. You must turn this option on if you
  316. require the DISCONTIGMEM option for your machine. If you are
  317. unsure, say Y.
  318. config HOLES_IN_ZONE
  319. bool
  320. default y if VIRTUAL_MEM_MAP
  321. config HAVE_ARCH_EARLY_PFN_TO_NID
  322. def_bool y
  323. depends on NEED_MULTIPLE_NODES
  324. config HAVE_ARCH_NODEDATA_EXTENSION
  325. def_bool y
  326. depends on NUMA
  327. config IA32_SUPPORT
  328. bool "Support for Linux/x86 binaries"
  329. help
  330. IA-64 processors can execute IA-32 (X86) instructions. By
  331. saying Y here, the kernel will include IA-32 system call
  332. emulation support which makes it possible to transparently
  333. run IA-32 Linux binaries on an IA-64 Linux system.
  334. If in doubt, say Y.
  335. config COMPAT
  336. bool
  337. depends on IA32_SUPPORT
  338. default y
  339. config IA64_MCA_RECOVERY
  340. tristate "MCA recovery from errors other than TLB."
  341. config PERFMON
  342. bool "Performance monitor support"
  343. help
  344. Selects whether support for the IA-64 performance monitor hardware
  345. is included in the kernel. This makes some kernel data-structures a
  346. little bigger and slows down execution a bit, but it is generally
  347. a good idea to turn this on. If you're unsure, say Y.
  348. config IA64_PALINFO
  349. tristate "/proc/pal support"
  350. help
  351. If you say Y here, you are able to get PAL (Processor Abstraction
  352. Layer) information in /proc/pal. This contains useful information
  353. about the processors in your systems, such as cache and TLB sizes
  354. and the PAL firmware version in use.
  355. To use this option, you have to ensure that the "/proc file system
  356. support" (CONFIG_PROC_FS) is enabled, too.
  357. config IA64_MC_ERR_INJECT
  358. tristate "MC error injection support"
  359. help
  360. Selets whether support for MC error injection. By enabling the
  361. support, kernel provide sysfs interface for user application to
  362. call MC error injection PAL procedure to inject various errors.
  363. This is a useful tool for MCA testing.
  364. If you're unsure, do not select this option.
  365. config SGI_SN
  366. def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
  367. config IA64_ESI
  368. bool "ESI (Extensible SAL Interface) support"
  369. help
  370. If you say Y here, support is built into the kernel to
  371. make ESI calls. ESI calls are used to support vendor-specific
  372. firmware extensions, such as the ability to inject memory-errors
  373. for test-purposes. If you're unsure, say N.
  374. source "drivers/sn/Kconfig"
  375. config KEXEC
  376. bool "kexec system call (EXPERIMENTAL)"
  377. depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
  378. help
  379. kexec is a system call that implements the ability to shutdown your
  380. current kernel, and to start another kernel. It is like a reboot
  381. but it is independent of the system firmware. And like a reboot
  382. you can start any kernel with it, not just Linux.
  383. The name comes from the similiarity to the exec system call.
  384. It is an ongoing process to be certain the hardware in a machine
  385. is properly shutdown, so do not be surprised if this code does not
  386. initially work for you. It may help to enable device hotplugging
  387. support. As of this writing the exact hardware interface is
  388. strongly in flux, so no good recommendation can be made.
  389. config CRASH_DUMP
  390. bool "kernel crash dumps (EXPERIMENTAL)"
  391. depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
  392. help
  393. Generate crash dump after being started by kexec.
  394. source "drivers/firmware/Kconfig"
  395. source "fs/Kconfig.binfmt"
  396. endmenu
  397. menu "Power management and ACPI"
  398. source "kernel/power/Kconfig"
  399. source "drivers/acpi/Kconfig"
  400. if PM
  401. source "arch/ia64/kernel/cpufreq/Kconfig"
  402. endif
  403. endmenu
  404. if !IA64_HP_SIM
  405. menu "Bus options (PCI, PCMCIA)"
  406. config PCI
  407. bool "PCI support"
  408. help
  409. Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
  410. here unless you are using a simulator without PCI support.
  411. config PCI_DOMAINS
  412. bool
  413. default PCI
  414. source "drivers/pci/pcie/Kconfig"
  415. source "drivers/pci/Kconfig"
  416. source "drivers/pci/hotplug/Kconfig"
  417. source "drivers/pcmcia/Kconfig"
  418. endmenu
  419. endif
  420. source "net/Kconfig"
  421. source "drivers/Kconfig"
  422. config MSPEC
  423. tristate "Memory special operations driver"
  424. depends on IA64
  425. select IA64_UNCACHED_ALLOCATOR
  426. help
  427. If you have an ia64 and you want to enable memory special
  428. operations support (formerly known as fetchop), say Y here,
  429. otherwise say N.
  430. source "fs/Kconfig"
  431. source "lib/Kconfig"
  432. #
  433. # Use the generic interrupt handling code in kernel/irq/:
  434. #
  435. config GENERIC_HARDIRQS
  436. bool
  437. default y
  438. config GENERIC_IRQ_PROBE
  439. bool
  440. default y
  441. config GENERIC_PENDING_IRQ
  442. bool
  443. depends on GENERIC_HARDIRQS && SMP
  444. default y
  445. config IRQ_PER_CPU
  446. bool
  447. default y
  448. source "arch/ia64/hp/sim/Kconfig"
  449. menu "Instrumentation Support"
  450. depends on EXPERIMENTAL
  451. source "arch/ia64/oprofile/Kconfig"
  452. config KPROBES
  453. bool "Kprobes (EXPERIMENTAL)"
  454. depends on KALLSYMS && EXPERIMENTAL && MODULES
  455. help
  456. Kprobes allows you to trap at almost any kernel address and
  457. execute a callback function. register_kprobe() establishes
  458. a probepoint and specifies the callback. Kprobes is useful
  459. for kernel debugging, non-intrusive instrumentation and testing.
  460. If in doubt, say "N".
  461. endmenu
  462. source "arch/ia64/Kconfig.debug"
  463. source "security/Kconfig"
  464. source "crypto/Kconfig"