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. select HAVE_IDE
  15. select HAVE_OPROFILE
  16. select HAVE_KPROBES
  17. select HAVE_KRETPROBES
  18. default y
  19. help
  20. The Itanium Processor Family is Intel's 64-bit successor to
  21. the 32-bit X86 line. The IA-64 Linux project has a home
  22. page at <http://www.linuxia64.org/> and a mailing list at
  23. <linux-ia64@vger.kernel.org>.
  24. config 64BIT
  25. bool
  26. select ATA_NONSTANDARD if ATA
  27. default y
  28. config ZONE_DMA
  29. def_bool y
  30. depends on !IA64_SGI_SN2
  31. config QUICKLIST
  32. bool
  33. default y
  34. config MMU
  35. bool
  36. default y
  37. config SWIOTLB
  38. bool
  39. config GENERIC_LOCKBREAK
  40. bool
  41. default y
  42. depends on SMP && PREEMPT
  43. config RWSEM_XCHGADD_ALGORITHM
  44. bool
  45. default y
  46. config ARCH_HAS_ILOG2_U32
  47. bool
  48. default n
  49. config ARCH_HAS_ILOG2_U64
  50. bool
  51. default n
  52. config HUGETLB_PAGE_SIZE_VARIABLE
  53. bool
  54. depends on HUGETLB_PAGE
  55. default y
  56. config GENERIC_FIND_NEXT_BIT
  57. bool
  58. default y
  59. config GENERIC_CALIBRATE_DELAY
  60. bool
  61. default y
  62. config GENERIC_TIME
  63. bool
  64. default y
  65. config GENERIC_TIME_VSYSCALL
  66. bool
  67. default y
  68. config HAVE_SETUP_PER_CPU_AREA
  69. def_bool y
  70. config DMI
  71. bool
  72. default y
  73. config EFI
  74. bool
  75. default y
  76. config GENERIC_IOMAP
  77. bool
  78. default y
  79. config SCHED_NO_NO_OMIT_FRAME_POINTER
  80. bool
  81. default y
  82. config IA64_UNCACHED_ALLOCATOR
  83. bool
  84. select GENERIC_ALLOCATOR
  85. config AUDIT_ARCH
  86. bool
  87. default y
  88. choice
  89. prompt "System type"
  90. default IA64_GENERIC
  91. config IA64_GENERIC
  92. bool "generic"
  93. select NUMA
  94. select ACPI_NUMA
  95. select SWIOTLB
  96. help
  97. This selects the system type of your hardware. A "generic" kernel
  98. will run on any supported IA-64 system. However, if you configure
  99. a kernel for your specific system, it will be faster and smaller.
  100. generic For any supported IA-64 system
  101. DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
  102. HP-zx1/sx1000 For HP systems
  103. HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
  104. SGI-SN2 For SGI Altix systems
  105. Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
  106. If you don't know what to do, choose "generic".
  107. config IA64_DIG
  108. bool "DIG-compliant"
  109. select SWIOTLB
  110. config IA64_HP_ZX1
  111. bool "HP-zx1/sx1000"
  112. help
  113. Build a kernel that runs on HP zx1 and sx1000 systems. This adds
  114. support for the HP I/O MMU.
  115. config IA64_HP_ZX1_SWIOTLB
  116. bool "HP-zx1/sx1000 with software I/O TLB"
  117. select SWIOTLB
  118. help
  119. Build a kernel that runs on HP zx1 and sx1000 systems even when they
  120. have broken PCI devices which cannot DMA to full 32 bits. Apart
  121. from support for the HP I/O MMU, this includes support for the software
  122. I/O TLB, which allows supporting the broken devices at the expense of
  123. wasting some kernel memory (about 2MB by default).
  124. config IA64_SGI_SN2
  125. bool "SGI-SN2"
  126. select NUMA
  127. select ACPI_NUMA
  128. help
  129. Selecting this option will optimize the kernel for use on sn2 based
  130. systems, but the resulting kernel binary will not run on other
  131. types of ia64 systems. If you have an SGI Altix system, it's safe
  132. to select this option. If in doubt, select ia64 generic support
  133. instead.
  134. config IA64_HP_SIM
  135. bool "Ski-simulator"
  136. select SWIOTLB
  137. endchoice
  138. choice
  139. prompt "Processor type"
  140. default ITANIUM
  141. config ITANIUM
  142. bool "Itanium"
  143. help
  144. Select your IA-64 processor type. The default is Itanium.
  145. This choice is safe for all IA-64 systems, but may not perform
  146. optimally on systems with, say, Itanium 2 or newer processors.
  147. config MCKINLEY
  148. bool "Itanium 2"
  149. help
  150. Select this to configure for an Itanium 2 (McKinley) processor.
  151. endchoice
  152. choice
  153. prompt "Kernel page size"
  154. default IA64_PAGE_SIZE_16KB
  155. config IA64_PAGE_SIZE_4KB
  156. bool "4KB"
  157. help
  158. This lets you select the page size of the kernel. For best IA-64
  159. performance, a page size of 8KB or 16KB is recommended. For best
  160. IA-32 compatibility, a page size of 4KB should be selected (the vast
  161. majority of IA-32 binaries work perfectly fine with a larger page
  162. size). For Itanium 2 or newer systems, a page size of 64KB can also
  163. be selected.
  164. 4KB For best IA-32 compatibility
  165. 8KB For best IA-64 performance
  166. 16KB For best IA-64 performance
  167. 64KB Requires Itanium 2 or newer processor.
  168. If you don't know what to do, choose 16KB.
  169. config IA64_PAGE_SIZE_8KB
  170. bool "8KB"
  171. config IA64_PAGE_SIZE_16KB
  172. bool "16KB"
  173. config IA64_PAGE_SIZE_64KB
  174. depends on !ITANIUM
  175. bool "64KB"
  176. endchoice
  177. choice
  178. prompt "Page Table Levels"
  179. default PGTABLE_3
  180. config PGTABLE_3
  181. bool "3 Levels"
  182. config PGTABLE_4
  183. depends on !IA64_PAGE_SIZE_64KB
  184. bool "4 Levels"
  185. endchoice
  186. if IA64_HP_SIM
  187. config HZ
  188. default 32
  189. endif
  190. if !IA64_HP_SIM
  191. source kernel/Kconfig.hz
  192. endif
  193. config IA64_BRL_EMU
  194. bool
  195. depends on ITANIUM
  196. default y
  197. # align cache-sensitive data to 128 bytes
  198. config IA64_L1_CACHE_SHIFT
  199. int
  200. default "7" if MCKINLEY
  201. default "6" if ITANIUM
  202. config IA64_CYCLONE
  203. bool "Cyclone (EXA) Time Source support"
  204. help
  205. Say Y here to enable support for IBM EXA Cyclone time source.
  206. If you're unsure, answer N.
  207. config IOSAPIC
  208. bool
  209. depends on !IA64_HP_SIM
  210. default y
  211. config FORCE_MAX_ZONEORDER
  212. int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
  213. range 11 17 if !HUGETLB_PAGE
  214. default "17" if HUGETLB_PAGE
  215. default "11"
  216. config VIRT_CPU_ACCOUNTING
  217. bool "Deterministic task and CPU time accounting"
  218. default n
  219. help
  220. Select this option to enable more accurate task and CPU time
  221. accounting. This is done by reading a CPU counter on each
  222. kernel entry and exit and on transitions within the kernel
  223. between system, softirq and hardirq state, so there is a
  224. small performance impact.
  225. If in doubt, say N here.
  226. config SMP
  227. bool "Symmetric multi-processing support"
  228. help
  229. This enables support for systems with more than one CPU. If you have
  230. a system with only one CPU, say N. If you have a system with more
  231. than one CPU, say Y.
  232. If you say N here, the kernel will run on single and multiprocessor
  233. systems, but will use only one CPU of a multiprocessor system. If
  234. you say Y here, the kernel will run on many, but not all,
  235. single processor systems. On a single processor system, the kernel
  236. will run faster if you say N here.
  237. See also the SMP-HOWTO available at
  238. <http://www.tldp.org/docs.html#howto>.
  239. If you don't know what to do here, say N.
  240. config NR_CPUS
  241. int "Maximum number of CPUs (2-1024)"
  242. range 2 1024
  243. depends on SMP
  244. default "1024"
  245. help
  246. You should set this to the number of CPUs in your system, but
  247. keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
  248. only use 2 CPUs on a >2 CPU system. Setting this to a value larger
  249. than 64 will cause the use of a CPU mask array, causing a small
  250. performance hit.
  251. config HOTPLUG_CPU
  252. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  253. depends on SMP && EXPERIMENTAL
  254. select HOTPLUG
  255. default n
  256. ---help---
  257. Say Y here to experiment with turning CPUs off and on. CPUs
  258. can be controlled through /sys/devices/system/cpu/cpu#.
  259. Say N if you want to disable CPU hotplug.
  260. config ARCH_ENABLE_MEMORY_HOTPLUG
  261. def_bool y
  262. config ARCH_ENABLE_MEMORY_HOTREMOVE
  263. def_bool y
  264. config SCHED_SMT
  265. bool "SMT scheduler support"
  266. depends on SMP
  267. help
  268. Improves the CPU scheduler's decision making when dealing with
  269. Intel IA64 chips with MultiThreading at a cost of slightly increased
  270. overhead in some places. If unsure say N here.
  271. config PERMIT_BSP_REMOVE
  272. bool "Support removal of Bootstrap Processor"
  273. depends on HOTPLUG_CPU
  274. default n
  275. ---help---
  276. Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
  277. support.
  278. config FORCE_CPEI_RETARGET
  279. bool "Force assumption that CPEI can be re-targetted"
  280. depends on PERMIT_BSP_REMOVE
  281. default n
  282. ---help---
  283. Say Y if you need to force the assumption that CPEI can be re-targetted to
  284. any cpu in the system. This hint is available via ACPI 3.0 specifications.
  285. Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
  286. This option it useful to enable this feature on older BIOS's as well.
  287. You can also enable this by using boot command line option force_cpei=1.
  288. source "kernel/Kconfig.preempt"
  289. source "mm/Kconfig"
  290. config ARCH_SELECT_MEMORY_MODEL
  291. def_bool y
  292. config ARCH_DISCONTIGMEM_ENABLE
  293. def_bool y
  294. help
  295. Say Y to support efficient handling of discontiguous physical memory,
  296. for architectures which are either NUMA (Non-Uniform Memory Access)
  297. or have huge holes in the physical address space for other reasons.
  298. See <file:Documentation/vm/numa> for more.
  299. config ARCH_FLATMEM_ENABLE
  300. def_bool y
  301. config ARCH_SPARSEMEM_ENABLE
  302. def_bool y
  303. depends on ARCH_DISCONTIGMEM_ENABLE
  304. select SPARSEMEM_VMEMMAP_ENABLE
  305. config ARCH_DISCONTIGMEM_DEFAULT
  306. def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
  307. depends on ARCH_DISCONTIGMEM_ENABLE
  308. config NUMA
  309. bool "NUMA support"
  310. depends on !IA64_HP_SIM && !FLATMEM
  311. default y if IA64_SGI_SN2
  312. select ACPI_NUMA if ACPI
  313. help
  314. Say Y to compile the kernel to support NUMA (Non-Uniform Memory
  315. Access). This option is for configuring high-end multiprocessor
  316. server systems. If in doubt, say N.
  317. config NODES_SHIFT
  318. int "Max num nodes shift(3-10)"
  319. range 3 10
  320. default "10"
  321. depends on NEED_MULTIPLE_NODES
  322. help
  323. This option specifies the maximum number of nodes in your SSI system.
  324. MAX_NUMNODES will be 2^(This value).
  325. If in doubt, use the default.
  326. config ARCH_POPULATES_NODE_MAP
  327. def_bool y
  328. # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
  329. # VIRTUAL_MEM_MAP has been retained for historical reasons.
  330. config VIRTUAL_MEM_MAP
  331. bool "Virtual mem map"
  332. depends on !SPARSEMEM
  333. default y if !IA64_HP_SIM
  334. help
  335. Say Y to compile the kernel with support for a virtual mem map.
  336. This code also only takes effect if a memory hole of greater than
  337. 1 Gb is found during boot. You must turn this option on if you
  338. require the DISCONTIGMEM option for your machine. If you are
  339. unsure, say Y.
  340. config HOLES_IN_ZONE
  341. bool
  342. default y if VIRTUAL_MEM_MAP
  343. config HAVE_ARCH_EARLY_PFN_TO_NID
  344. def_bool y
  345. depends on NEED_MULTIPLE_NODES
  346. config HAVE_ARCH_NODEDATA_EXTENSION
  347. def_bool y
  348. depends on NUMA
  349. config IA32_SUPPORT
  350. bool "Support for Linux/x86 binaries"
  351. help
  352. IA-64 processors can execute IA-32 (X86) instructions. By
  353. saying Y here, the kernel will include IA-32 system call
  354. emulation support which makes it possible to transparently
  355. run IA-32 Linux binaries on an IA-64 Linux system.
  356. If in doubt, say Y.
  357. config COMPAT
  358. bool
  359. depends on IA32_SUPPORT
  360. default y
  361. config COMPAT_FOR_U64_ALIGNMENT
  362. def_bool COMPAT
  363. config IA64_MCA_RECOVERY
  364. tristate "MCA recovery from errors other than TLB."
  365. config PERFMON
  366. bool "Performance monitor support"
  367. help
  368. Selects whether support for the IA-64 performance monitor hardware
  369. is included in the kernel. This makes some kernel data-structures a
  370. little bigger and slows down execution a bit, but it is generally
  371. a good idea to turn this on. If you're unsure, say Y.
  372. config IA64_PALINFO
  373. tristate "/proc/pal support"
  374. help
  375. If you say Y here, you are able to get PAL (Processor Abstraction
  376. Layer) information in /proc/pal. This contains useful information
  377. about the processors in your systems, such as cache and TLB sizes
  378. and the PAL firmware version in use.
  379. To use this option, you have to ensure that the "/proc file system
  380. support" (CONFIG_PROC_FS) is enabled, too.
  381. config IA64_MC_ERR_INJECT
  382. tristate "MC error injection support"
  383. help
  384. Adds support for MC error injection. If enabled, the kernel
  385. will provide a sysfs interface for user applications to
  386. call MC error injection PAL procedures to inject various errors.
  387. This is a useful tool for MCA testing.
  388. If you're unsure, do not select this option.
  389. config SGI_SN
  390. def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
  391. config IA64_ESI
  392. bool "ESI (Extensible SAL Interface) support"
  393. help
  394. If you say Y here, support is built into the kernel to
  395. make ESI calls. ESI calls are used to support vendor-specific
  396. firmware extensions, such as the ability to inject memory-errors
  397. for test-purposes. If you're unsure, say N.
  398. config IA64_HP_AML_NFW
  399. bool "Support ACPI AML calls to native firmware"
  400. help
  401. This driver installs a global ACPI Operation Region handler for
  402. region 0xA1. AML methods can use this OpRegion to call arbitrary
  403. native firmware functions. The driver installs the OpRegion
  404. handler if there is an HPQ5001 device or if the user supplies
  405. the "force" module parameter, e.g., with the "aml_nfw.force"
  406. kernel command line option.
  407. source "drivers/sn/Kconfig"
  408. config KEXEC
  409. bool "kexec system call (EXPERIMENTAL)"
  410. depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
  411. help
  412. kexec is a system call that implements the ability to shutdown your
  413. current kernel, and to start another kernel. It is like a reboot
  414. but it is independent of the system firmware. And like a reboot
  415. you can start any kernel with it, not just Linux.
  416. The name comes from the similarity to the exec system call.
  417. It is an ongoing process to be certain the hardware in a machine
  418. is properly shutdown, so do not be surprised if this code does not
  419. initially work for you. It may help to enable device hotplugging
  420. support. As of this writing the exact hardware interface is
  421. strongly in flux, so no good recommendation can be made.
  422. config CRASH_DUMP
  423. bool "kernel crash dumps (EXPERIMENTAL)"
  424. depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
  425. help
  426. Generate crash dump after being started by kexec.
  427. source "drivers/firmware/Kconfig"
  428. source "fs/Kconfig.binfmt"
  429. endmenu
  430. menu "Power management and ACPI"
  431. source "kernel/power/Kconfig"
  432. source "drivers/acpi/Kconfig"
  433. if PM
  434. source "arch/ia64/kernel/cpufreq/Kconfig"
  435. endif
  436. endmenu
  437. if !IA64_HP_SIM
  438. menu "Bus options (PCI, PCMCIA)"
  439. config PCI
  440. bool "PCI support"
  441. help
  442. Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
  443. here unless you are using a simulator without PCI support.
  444. config PCI_DOMAINS
  445. def_bool PCI
  446. config PCI_SYSCALL
  447. def_bool PCI
  448. source "drivers/pci/pcie/Kconfig"
  449. source "drivers/pci/Kconfig"
  450. source "drivers/pci/hotplug/Kconfig"
  451. source "drivers/pcmcia/Kconfig"
  452. endmenu
  453. endif
  454. source "net/Kconfig"
  455. source "drivers/Kconfig"
  456. config MSPEC
  457. tristate "Memory special operations driver"
  458. depends on IA64
  459. select IA64_UNCACHED_ALLOCATOR
  460. help
  461. If you have an ia64 and you want to enable memory special
  462. operations support (formerly known as fetchop), say Y here,
  463. otherwise say N.
  464. source "fs/Kconfig"
  465. source "lib/Kconfig"
  466. #
  467. # Use the generic interrupt handling code in kernel/irq/:
  468. #
  469. config GENERIC_HARDIRQS
  470. bool
  471. default y
  472. config GENERIC_IRQ_PROBE
  473. bool
  474. default y
  475. config GENERIC_PENDING_IRQ
  476. bool
  477. depends on GENERIC_HARDIRQS && SMP
  478. default y
  479. config IRQ_PER_CPU
  480. bool
  481. default y
  482. config IOMMU_HELPER
  483. def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC)
  484. source "arch/ia64/hp/sim/Kconfig"
  485. source "arch/ia64/Kconfig.debug"
  486. source "security/Kconfig"
  487. source "crypto/Kconfig"