Kconfig 15 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. 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 QUICKLIST
  28. bool
  29. default y
  30. config MMU
  31. bool
  32. default y
  33. config SWIOTLB
  34. bool
  35. config GENERIC_LOCKBREAK
  36. bool
  37. default y
  38. depends on SMP && PREEMPT
  39. config RWSEM_XCHGADD_ALGORITHM
  40. bool
  41. default y
  42. config ARCH_HAS_ILOG2_U32
  43. bool
  44. default n
  45. config ARCH_HAS_ILOG2_U64
  46. bool
  47. default n
  48. config HUGETLB_PAGE_SIZE_VARIABLE
  49. bool
  50. depends on HUGETLB_PAGE
  51. default y
  52. config GENERIC_FIND_NEXT_BIT
  53. bool
  54. default y
  55. config GENERIC_CALIBRATE_DELAY
  56. bool
  57. default y
  58. config GENERIC_TIME
  59. bool
  60. default y
  61. config GENERIC_TIME_VSYSCALL
  62. bool
  63. default y
  64. config DMI
  65. bool
  66. default y
  67. config EFI
  68. bool
  69. default y
  70. config GENERIC_IOMAP
  71. bool
  72. default y
  73. config SCHED_NO_NO_OMIT_FRAME_POINTER
  74. bool
  75. default y
  76. config IA64_UNCACHED_ALLOCATOR
  77. bool
  78. select GENERIC_ALLOCATOR
  79. config AUDIT_ARCH
  80. bool
  81. default y
  82. choice
  83. prompt "System type"
  84. default IA64_GENERIC
  85. config IA64_GENERIC
  86. bool "generic"
  87. select NUMA
  88. select ACPI_NUMA
  89. select SWIOTLB
  90. help
  91. This selects the system type of your hardware. A "generic" kernel
  92. will run on any supported IA-64 system. However, if you configure
  93. a kernel for your specific system, it will be faster and smaller.
  94. generic For any supported IA-64 system
  95. DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
  96. HP-zx1/sx1000 For HP systems
  97. HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
  98. SGI-SN2 For SGI Altix systems
  99. Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
  100. If you don't know what to do, choose "generic".
  101. config IA64_DIG
  102. bool "DIG-compliant"
  103. select SWIOTLB
  104. config IA64_HP_ZX1
  105. bool "HP-zx1/sx1000"
  106. help
  107. Build a kernel that runs on HP zx1 and sx1000 systems. This adds
  108. support for the HP I/O MMU.
  109. config IA64_HP_ZX1_SWIOTLB
  110. bool "HP-zx1/sx1000 with software I/O TLB"
  111. select SWIOTLB
  112. help
  113. Build a kernel that runs on HP zx1 and sx1000 systems even when they
  114. have broken PCI devices which cannot DMA to full 32 bits. Apart
  115. from support for the HP I/O MMU, this includes support for the software
  116. I/O TLB, which allows supporting the broken devices at the expense of
  117. wasting some kernel memory (about 2MB by default).
  118. config IA64_SGI_SN2
  119. bool "SGI-SN2"
  120. help
  121. Selecting this option will optimize the kernel for use on sn2 based
  122. systems, but the resulting kernel binary will not run on other
  123. types of ia64 systems. If you have an SGI Altix system, it's safe
  124. to select this option. If in doubt, select ia64 generic support
  125. instead.
  126. config IA64_HP_SIM
  127. bool "Ski-simulator"
  128. select SWIOTLB
  129. endchoice
  130. choice
  131. prompt "Processor type"
  132. default ITANIUM
  133. config ITANIUM
  134. bool "Itanium"
  135. help
  136. Select your IA-64 processor type. The default is Itanium.
  137. This choice is safe for all IA-64 systems, but may not perform
  138. optimally on systems with, say, Itanium 2 or newer processors.
  139. config MCKINLEY
  140. bool "Itanium 2"
  141. help
  142. Select this to configure for an Itanium 2 (McKinley) processor.
  143. endchoice
  144. choice
  145. prompt "Kernel page size"
  146. default IA64_PAGE_SIZE_16KB
  147. config IA64_PAGE_SIZE_4KB
  148. bool "4KB"
  149. help
  150. This lets you select the page size of the kernel. For best IA-64
  151. performance, a page size of 8KB or 16KB is recommended. For best
  152. IA-32 compatibility, a page size of 4KB should be selected (the vast
  153. majority of IA-32 binaries work perfectly fine with a larger page
  154. size). For Itanium 2 or newer systems, a page size of 64KB can also
  155. be selected.
  156. 4KB For best IA-32 compatibility
  157. 8KB For best IA-64 performance
  158. 16KB For best IA-64 performance
  159. 64KB Requires Itanium 2 or newer processor.
  160. If you don't know what to do, choose 16KB.
  161. config IA64_PAGE_SIZE_8KB
  162. bool "8KB"
  163. config IA64_PAGE_SIZE_16KB
  164. bool "16KB"
  165. config IA64_PAGE_SIZE_64KB
  166. depends on !ITANIUM
  167. bool "64KB"
  168. endchoice
  169. choice
  170. prompt "Page Table Levels"
  171. default PGTABLE_3
  172. config PGTABLE_3
  173. bool "3 Levels"
  174. config PGTABLE_4
  175. depends on !IA64_PAGE_SIZE_64KB
  176. bool "4 Levels"
  177. endchoice
  178. source kernel/Kconfig.hz
  179. config IA64_BRL_EMU
  180. bool
  181. depends on ITANIUM
  182. default y
  183. # align cache-sensitive data to 128 bytes
  184. config IA64_L1_CACHE_SHIFT
  185. int
  186. default "7" if MCKINLEY
  187. default "6" if ITANIUM
  188. config IA64_CYCLONE
  189. bool "Cyclone (EXA) Time Source support"
  190. help
  191. Say Y here to enable support for IBM EXA Cyclone time source.
  192. If you're unsure, answer N.
  193. config IOSAPIC
  194. bool
  195. depends on !IA64_HP_SIM
  196. default y
  197. config IA64_SGI_SN_XP
  198. tristate "Support communication between SGI SSIs"
  199. depends on IA64_GENERIC || IA64_SGI_SN2
  200. select IA64_UNCACHED_ALLOCATOR
  201. help
  202. An SGI machine can be divided into multiple Single System
  203. Images which act independently of each other and have
  204. hardware based memory protection from the others. Enabling
  205. this feature will allow for direct communication between SSIs
  206. based on a network adapter and DMA messaging.
  207. config FORCE_MAX_ZONEORDER
  208. int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
  209. range 11 17 if !HUGETLB_PAGE
  210. default "17" if HUGETLB_PAGE
  211. default "11"
  212. config SMP
  213. bool "Symmetric multi-processing support"
  214. help
  215. This enables support for systems with more than one CPU. If you have
  216. a system with only one CPU, say N. If you have a system with more
  217. than one CPU, say Y.
  218. If you say N here, the kernel will run on single and multiprocessor
  219. systems, but will use only one CPU of a multiprocessor system. If
  220. you say Y here, the kernel will run on many, but not all,
  221. single processor systems. On a single processor system, the kernel
  222. will run faster if you say N here.
  223. See also the <file:Documentation/smp.txt> and the SMP-HOWTO
  224. available at <http://www.tldp.org/docs.html#howto>.
  225. If you don't know what to do here, say N.
  226. config NR_CPUS
  227. int "Maximum number of CPUs (2-1024)"
  228. range 2 1024
  229. depends on SMP
  230. default "1024"
  231. help
  232. You should set this to the number of CPUs in your system, but
  233. keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
  234. only use 2 CPUs on a >2 CPU system. Setting this to a value larger
  235. than 64 will cause the use of a CPU mask array, causing a small
  236. performance hit.
  237. config HOTPLUG_CPU
  238. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  239. depends on SMP && EXPERIMENTAL
  240. select HOTPLUG
  241. default n
  242. ---help---
  243. Say Y here to experiment with turning CPUs off and on. CPUs
  244. can be controlled through /sys/devices/system/cpu/cpu#.
  245. Say N if you want to disable CPU hotplug.
  246. config ARCH_ENABLE_MEMORY_HOTPLUG
  247. def_bool y
  248. config ARCH_ENABLE_MEMORY_HOTREMOVE
  249. def_bool y
  250. config SCHED_SMT
  251. bool "SMT scheduler support"
  252. depends on SMP
  253. help
  254. Improves the CPU scheduler's decision making when dealing with
  255. Intel IA64 chips with MultiThreading at a cost of slightly increased
  256. overhead in some places. If unsure say N here.
  257. config PERMIT_BSP_REMOVE
  258. bool "Support removal of Bootstrap Processor"
  259. depends on HOTPLUG_CPU
  260. default n
  261. ---help---
  262. Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
  263. support.
  264. config FORCE_CPEI_RETARGET
  265. bool "Force assumption that CPEI can be re-targetted"
  266. depends on PERMIT_BSP_REMOVE
  267. default n
  268. ---help---
  269. Say Y if you need to force the assumption that CPEI can be re-targetted to
  270. any cpu in the system. This hint is available via ACPI 3.0 specifications.
  271. Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
  272. This option it useful to enable this feature on older BIOS's as well.
  273. You can also enable this by using boot command line option force_cpei=1.
  274. source "kernel/Kconfig.preempt"
  275. source "mm/Kconfig"
  276. config ARCH_SELECT_MEMORY_MODEL
  277. def_bool y
  278. config ARCH_DISCONTIGMEM_ENABLE
  279. def_bool y
  280. help
  281. Say Y to support efficient handling of discontiguous physical memory,
  282. for architectures which are either NUMA (Non-Uniform Memory Access)
  283. or have huge holes in the physical address space for other reasons.
  284. See <file:Documentation/vm/numa> for more.
  285. config ARCH_FLATMEM_ENABLE
  286. def_bool y
  287. config ARCH_SPARSEMEM_ENABLE
  288. def_bool y
  289. depends on ARCH_DISCONTIGMEM_ENABLE
  290. select SPARSEMEM_VMEMMAP_ENABLE
  291. config ARCH_DISCONTIGMEM_DEFAULT
  292. def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
  293. depends on ARCH_DISCONTIGMEM_ENABLE
  294. config NUMA
  295. bool "NUMA support"
  296. depends on !IA64_HP_SIM && !FLATMEM
  297. default y if IA64_SGI_SN2
  298. select ACPI_NUMA if ACPI
  299. help
  300. Say Y to compile the kernel to support NUMA (Non-Uniform Memory
  301. Access). This option is for configuring high-end multiprocessor
  302. server systems. If in doubt, say N.
  303. config NODES_SHIFT
  304. int "Max num nodes shift(3-10)"
  305. range 3 10
  306. default "10"
  307. depends on NEED_MULTIPLE_NODES
  308. help
  309. This option specifies the maximum number of nodes in your SSI system.
  310. MAX_NUMNODES will be 2^(This value).
  311. If in doubt, use the default.
  312. config ARCH_POPULATES_NODE_MAP
  313. def_bool y
  314. # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
  315. # VIRTUAL_MEM_MAP has been retained for historical reasons.
  316. config VIRTUAL_MEM_MAP
  317. bool "Virtual mem map"
  318. depends on !SPARSEMEM
  319. default y if !IA64_HP_SIM
  320. help
  321. Say Y to compile the kernel with support for a virtual mem map.
  322. This code also only takes effect if a memory hole of greater than
  323. 1 Gb is found during boot. You must turn this option on if you
  324. require the DISCONTIGMEM option for your machine. If you are
  325. unsure, say Y.
  326. config HOLES_IN_ZONE
  327. bool
  328. default y if VIRTUAL_MEM_MAP
  329. config HAVE_ARCH_EARLY_PFN_TO_NID
  330. def_bool y
  331. depends on NEED_MULTIPLE_NODES
  332. config HAVE_ARCH_NODEDATA_EXTENSION
  333. def_bool y
  334. depends on NUMA
  335. config IA32_SUPPORT
  336. bool "Support for Linux/x86 binaries"
  337. help
  338. IA-64 processors can execute IA-32 (X86) instructions. By
  339. saying Y here, the kernel will include IA-32 system call
  340. emulation support which makes it possible to transparently
  341. run IA-32 Linux binaries on an IA-64 Linux system.
  342. If in doubt, say Y.
  343. config COMPAT
  344. bool
  345. depends on IA32_SUPPORT
  346. default y
  347. config COMPAT_FOR_U64_ALIGNMENT
  348. def_bool COMPAT
  349. config IA64_MCA_RECOVERY
  350. tristate "MCA recovery from errors other than TLB."
  351. config PERFMON
  352. bool "Performance monitor support"
  353. help
  354. Selects whether support for the IA-64 performance monitor hardware
  355. is included in the kernel. This makes some kernel data-structures a
  356. little bigger and slows down execution a bit, but it is generally
  357. a good idea to turn this on. If you're unsure, say Y.
  358. config IA64_PALINFO
  359. tristate "/proc/pal support"
  360. help
  361. If you say Y here, you are able to get PAL (Processor Abstraction
  362. Layer) information in /proc/pal. This contains useful information
  363. about the processors in your systems, such as cache and TLB sizes
  364. and the PAL firmware version in use.
  365. To use this option, you have to ensure that the "/proc file system
  366. support" (CONFIG_PROC_FS) is enabled, too.
  367. config IA64_MC_ERR_INJECT
  368. tristate "MC error injection support"
  369. help
  370. Adds support for MC error injection. If enabled, the kernel
  371. will provide a sysfs interface for user applications to
  372. call MC error injection PAL procedures to inject various errors.
  373. This is a useful tool for MCA testing.
  374. If you're unsure, do not select this option.
  375. config SGI_SN
  376. def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
  377. config IA64_ESI
  378. bool "ESI (Extensible SAL Interface) support"
  379. help
  380. If you say Y here, support is built into the kernel to
  381. make ESI calls. ESI calls are used to support vendor-specific
  382. firmware extensions, such as the ability to inject memory-errors
  383. for test-purposes. If you're unsure, say N.
  384. config IA64_HP_AML_NFW
  385. bool "Support ACPI AML calls to native firmware"
  386. help
  387. This driver installs a global ACPI Operation Region handler for
  388. region 0xA1. AML methods can use this OpRegion to call arbitrary
  389. native firmware functions. The driver installs the OpRegion
  390. handler if there is an HPQ5001 device or if the user supplies
  391. the "force" module parameter, e.g., with the "aml_nfw.force"
  392. kernel command line option.
  393. source "drivers/sn/Kconfig"
  394. config KEXEC
  395. bool "kexec system call (EXPERIMENTAL)"
  396. depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
  397. help
  398. kexec is a system call that implements the ability to shutdown your
  399. current kernel, and to start another kernel. It is like a reboot
  400. but it is independent of the system firmware. And like a reboot
  401. you can start any kernel with it, not just Linux.
  402. The name comes from the similarity to the exec system call.
  403. It is an ongoing process to be certain the hardware in a machine
  404. is properly shutdown, so do not be surprised if this code does not
  405. initially work for you. It may help to enable device hotplugging
  406. support. As of this writing the exact hardware interface is
  407. strongly in flux, so no good recommendation can be made.
  408. config CRASH_DUMP
  409. bool "kernel crash dumps (EXPERIMENTAL)"
  410. depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
  411. help
  412. Generate crash dump after being started by kexec.
  413. source "drivers/firmware/Kconfig"
  414. source "fs/Kconfig.binfmt"
  415. endmenu
  416. menu "Power management and ACPI"
  417. source "kernel/power/Kconfig"
  418. source "drivers/acpi/Kconfig"
  419. if PM
  420. source "arch/ia64/kernel/cpufreq/Kconfig"
  421. endif
  422. endmenu
  423. if !IA64_HP_SIM
  424. menu "Bus options (PCI, PCMCIA)"
  425. config PCI
  426. bool "PCI support"
  427. help
  428. Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
  429. here unless you are using a simulator without PCI support.
  430. config PCI_DOMAINS
  431. def_bool PCI
  432. config PCI_SYSCALL
  433. def_bool PCI
  434. source "drivers/pci/pcie/Kconfig"
  435. source "drivers/pci/Kconfig"
  436. source "drivers/pci/hotplug/Kconfig"
  437. source "drivers/pcmcia/Kconfig"
  438. endmenu
  439. endif
  440. source "net/Kconfig"
  441. source "drivers/Kconfig"
  442. config MSPEC
  443. tristate "Memory special operations driver"
  444. depends on IA64
  445. select IA64_UNCACHED_ALLOCATOR
  446. help
  447. If you have an ia64 and you want to enable memory special
  448. operations support (formerly known as fetchop), say Y here,
  449. otherwise say N.
  450. source "fs/Kconfig"
  451. source "lib/Kconfig"
  452. #
  453. # Use the generic interrupt handling code in kernel/irq/:
  454. #
  455. config GENERIC_HARDIRQS
  456. bool
  457. default y
  458. config GENERIC_IRQ_PROBE
  459. bool
  460. default y
  461. config GENERIC_PENDING_IRQ
  462. bool
  463. depends on GENERIC_HARDIRQS && SMP
  464. default y
  465. config IRQ_PER_CPU
  466. bool
  467. default y
  468. source "arch/ia64/hp/sim/Kconfig"
  469. source "kernel/Kconfig.instrumentation"
  470. source "arch/ia64/Kconfig.debug"
  471. source "security/Kconfig"
  472. source "crypto/Kconfig"