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