Kconfig 16 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. select HAVE_DMA_ATTRS
  19. select HAVE_KVM
  20. default y
  21. help
  22. The Itanium Processor Family is Intel's 64-bit successor to
  23. the 32-bit X86 line. The IA-64 Linux project has a home
  24. page at <http://www.linuxia64.org/> and a mailing list at
  25. <linux-ia64@vger.kernel.org>.
  26. config 64BIT
  27. bool
  28. select ATA_NONSTANDARD if ATA
  29. default y
  30. config ZONE_DMA
  31. def_bool y
  32. depends on !IA64_SGI_SN2
  33. config QUICKLIST
  34. bool
  35. default y
  36. config MMU
  37. bool
  38. default y
  39. config SWIOTLB
  40. bool
  41. config IOMMU_HELPER
  42. bool
  43. config GENERIC_LOCKBREAK
  44. bool
  45. default y
  46. depends on SMP && PREEMPT
  47. config RWSEM_XCHGADD_ALGORITHM
  48. bool
  49. default y
  50. config HUGETLB_PAGE_SIZE_VARIABLE
  51. bool
  52. depends on HUGETLB_PAGE
  53. default y
  54. config GENERIC_FIND_NEXT_BIT
  55. bool
  56. default y
  57. config GENERIC_CALIBRATE_DELAY
  58. bool
  59. default y
  60. config GENERIC_TIME
  61. bool
  62. default y
  63. config GENERIC_TIME_VSYSCALL
  64. bool
  65. default y
  66. config HAVE_SETUP_PER_CPU_AREA
  67. def_bool y
  68. config DMI
  69. bool
  70. default y
  71. config EFI
  72. bool
  73. default y
  74. config GENERIC_IOMAP
  75. bool
  76. default y
  77. config SCHED_NO_NO_OMIT_FRAME_POINTER
  78. bool
  79. default y
  80. config IA64_UNCACHED_ALLOCATOR
  81. bool
  82. select GENERIC_ALLOCATOR
  83. config AUDIT_ARCH
  84. bool
  85. default y
  86. menuconfig PARAVIRT_GUEST
  87. bool "Paravirtualized guest support"
  88. help
  89. Say Y here to get to see options related to running Linux under
  90. various hypervisors. This option alone does not add any kernel code.
  91. If you say N, all options in this submenu will be skipped and disabled.
  92. if PARAVIRT_GUEST
  93. config PARAVIRT
  94. bool "Enable paravirtualization code"
  95. depends on PARAVIRT_GUEST
  96. default y
  97. bool
  98. default y
  99. help
  100. This changes the kernel so it can modify itself when it is run
  101. under a hypervisor, potentially improving performance significantly
  102. over full virtualization. However, when run without a hypervisor
  103. the kernel is theoretically slower and slightly larger.
  104. source "arch/ia64/xen/Kconfig"
  105. endif
  106. choice
  107. prompt "System type"
  108. default IA64_GENERIC
  109. config IA64_GENERIC
  110. bool "generic"
  111. select NUMA
  112. select ACPI_NUMA
  113. select SWIOTLB
  114. help
  115. This selects the system type of your hardware. A "generic" kernel
  116. will run on any supported IA-64 system. However, if you configure
  117. a kernel for your specific system, it will be faster and smaller.
  118. generic For any supported IA-64 system
  119. DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
  120. HP-zx1/sx1000 For HP systems
  121. HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
  122. SGI-SN2 For SGI Altix systems
  123. SGI-UV For SGI UV systems
  124. Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
  125. Xen-domU For xen domU system
  126. If you don't know what to do, choose "generic".
  127. config IA64_DIG
  128. bool "DIG-compliant"
  129. select SWIOTLB
  130. config IA64_HP_ZX1
  131. bool "HP-zx1/sx1000"
  132. help
  133. Build a kernel that runs on HP zx1 and sx1000 systems. This adds
  134. support for the HP I/O MMU.
  135. config IA64_HP_ZX1_SWIOTLB
  136. bool "HP-zx1/sx1000 with software I/O TLB"
  137. select SWIOTLB
  138. help
  139. Build a kernel that runs on HP zx1 and sx1000 systems even when they
  140. have broken PCI devices which cannot DMA to full 32 bits. Apart
  141. from support for the HP I/O MMU, this includes support for the software
  142. I/O TLB, which allows supporting the broken devices at the expense of
  143. wasting some kernel memory (about 2MB by default).
  144. config IA64_SGI_SN2
  145. bool "SGI-SN2"
  146. select NUMA
  147. select ACPI_NUMA
  148. help
  149. Selecting this option will optimize the kernel for use on sn2 based
  150. systems, but the resulting kernel binary will not run on other
  151. types of ia64 systems. If you have an SGI Altix system, it's safe
  152. to select this option. If in doubt, select ia64 generic support
  153. instead.
  154. config IA64_SGI_UV
  155. bool "SGI-UV"
  156. select NUMA
  157. select ACPI_NUMA
  158. select SWIOTLB
  159. help
  160. Selecting this option will optimize the kernel for use on UV based
  161. systems, but the resulting kernel binary will not run on other
  162. types of ia64 systems. If you have an SGI UV system, it's safe
  163. to select this option. If in doubt, select ia64 generic support
  164. instead.
  165. config IA64_HP_SIM
  166. bool "Ski-simulator"
  167. select SWIOTLB
  168. config IA64_XEN_GUEST
  169. bool "Xen guest"
  170. depends on XEN
  171. endchoice
  172. choice
  173. prompt "Processor type"
  174. default ITANIUM
  175. config ITANIUM
  176. bool "Itanium"
  177. help
  178. Select your IA-64 processor type. The default is Itanium.
  179. This choice is safe for all IA-64 systems, but may not perform
  180. optimally on systems with, say, Itanium 2 or newer processors.
  181. config MCKINLEY
  182. bool "Itanium 2"
  183. help
  184. Select this to configure for an Itanium 2 (McKinley) processor.
  185. endchoice
  186. choice
  187. prompt "Kernel page size"
  188. default IA64_PAGE_SIZE_16KB
  189. config IA64_PAGE_SIZE_4KB
  190. bool "4KB"
  191. help
  192. This lets you select the page size of the kernel. For best IA-64
  193. performance, a page size of 8KB or 16KB is recommended. For best
  194. IA-32 compatibility, a page size of 4KB should be selected (the vast
  195. majority of IA-32 binaries work perfectly fine with a larger page
  196. size). For Itanium 2 or newer systems, a page size of 64KB can also
  197. be selected.
  198. 4KB For best IA-32 compatibility
  199. 8KB For best IA-64 performance
  200. 16KB For best IA-64 performance
  201. 64KB Requires Itanium 2 or newer processor.
  202. If you don't know what to do, choose 16KB.
  203. config IA64_PAGE_SIZE_8KB
  204. bool "8KB"
  205. config IA64_PAGE_SIZE_16KB
  206. bool "16KB"
  207. config IA64_PAGE_SIZE_64KB
  208. depends on !ITANIUM
  209. bool "64KB"
  210. endchoice
  211. choice
  212. prompt "Page Table Levels"
  213. default PGTABLE_3
  214. config PGTABLE_3
  215. bool "3 Levels"
  216. config PGTABLE_4
  217. depends on !IA64_PAGE_SIZE_64KB
  218. bool "4 Levels"
  219. endchoice
  220. if IA64_HP_SIM
  221. config HZ
  222. default 32
  223. endif
  224. if !IA64_HP_SIM
  225. source kernel/Kconfig.hz
  226. endif
  227. config IA64_BRL_EMU
  228. bool
  229. depends on ITANIUM
  230. default y
  231. # align cache-sensitive data to 128 bytes
  232. config IA64_L1_CACHE_SHIFT
  233. int
  234. default "7" if MCKINLEY
  235. default "6" if ITANIUM
  236. config IA64_CYCLONE
  237. bool "Cyclone (EXA) Time Source support"
  238. help
  239. Say Y here to enable support for IBM EXA Cyclone time source.
  240. If you're unsure, answer N.
  241. config IOSAPIC
  242. bool
  243. depends on !IA64_HP_SIM
  244. default y
  245. config FORCE_MAX_ZONEORDER
  246. int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
  247. range 11 17 if !HUGETLB_PAGE
  248. default "17" if HUGETLB_PAGE
  249. default "11"
  250. config VIRT_CPU_ACCOUNTING
  251. bool "Deterministic task and CPU time accounting"
  252. default n
  253. help
  254. Select this option to enable more accurate task and CPU time
  255. accounting. This is done by reading a CPU counter on each
  256. kernel entry and exit and on transitions within the kernel
  257. between system, softirq and hardirq state, so there is a
  258. small performance impact.
  259. If in doubt, say N here.
  260. config SMP
  261. bool "Symmetric multi-processing support"
  262. select USE_GENERIC_SMP_HELPERS
  263. help
  264. This enables support for systems with more than one CPU. If you have
  265. a system with only one CPU, say N. If you have a system with more
  266. than one CPU, say Y.
  267. If you say N here, the kernel will run on single and multiprocessor
  268. systems, but will use only one CPU of a multiprocessor system. If
  269. you say Y here, the kernel will run on many, but not all,
  270. single processor systems. On a single processor system, the kernel
  271. will run faster if you say N here.
  272. See also the SMP-HOWTO available at
  273. <http://www.tldp.org/docs.html#howto>.
  274. If you don't know what to do here, say N.
  275. config NR_CPUS
  276. int "Maximum number of CPUs (2-4096)"
  277. range 2 4096
  278. depends on SMP
  279. default "4096"
  280. help
  281. You should set this to the number of CPUs in your system, but
  282. keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
  283. only use 2 CPUs on a >2 CPU system. Setting this to a value larger
  284. than 64 will cause the use of a CPU mask array, causing a small
  285. performance hit.
  286. config HOTPLUG_CPU
  287. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  288. depends on SMP && EXPERIMENTAL
  289. select HOTPLUG
  290. default n
  291. ---help---
  292. Say Y here to experiment with turning CPUs off and on. CPUs
  293. can be controlled through /sys/devices/system/cpu/cpu#.
  294. Say N if you want to disable CPU hotplug.
  295. config ARCH_ENABLE_MEMORY_HOTPLUG
  296. def_bool y
  297. config ARCH_ENABLE_MEMORY_HOTREMOVE
  298. def_bool y
  299. config SCHED_SMT
  300. bool "SMT scheduler support"
  301. depends on SMP
  302. help
  303. Improves the CPU scheduler's decision making when dealing with
  304. Intel IA64 chips with MultiThreading at a cost of slightly increased
  305. overhead in some places. If unsure say N here.
  306. config PERMIT_BSP_REMOVE
  307. bool "Support removal of Bootstrap Processor"
  308. depends on HOTPLUG_CPU
  309. default n
  310. ---help---
  311. Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
  312. support.
  313. config FORCE_CPEI_RETARGET
  314. bool "Force assumption that CPEI can be re-targetted"
  315. depends on PERMIT_BSP_REMOVE
  316. default n
  317. ---help---
  318. Say Y if you need to force the assumption that CPEI can be re-targetted to
  319. any cpu in the system. This hint is available via ACPI 3.0 specifications.
  320. Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
  321. This option it useful to enable this feature on older BIOS's as well.
  322. You can also enable this by using boot command line option force_cpei=1.
  323. source "kernel/Kconfig.preempt"
  324. source "mm/Kconfig"
  325. config ARCH_SELECT_MEMORY_MODEL
  326. def_bool y
  327. config ARCH_DISCONTIGMEM_ENABLE
  328. def_bool y
  329. help
  330. Say Y to support efficient handling of discontiguous physical memory,
  331. for architectures which are either NUMA (Non-Uniform Memory Access)
  332. or have huge holes in the physical address space for other reasons.
  333. See <file:Documentation/vm/numa> for more.
  334. config ARCH_FLATMEM_ENABLE
  335. def_bool y
  336. config ARCH_SPARSEMEM_ENABLE
  337. def_bool y
  338. depends on ARCH_DISCONTIGMEM_ENABLE
  339. select SPARSEMEM_VMEMMAP_ENABLE
  340. config ARCH_DISCONTIGMEM_DEFAULT
  341. def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
  342. depends on ARCH_DISCONTIGMEM_ENABLE
  343. config NUMA
  344. bool "NUMA support"
  345. depends on !IA64_HP_SIM && !FLATMEM
  346. default y if IA64_SGI_SN2
  347. select ACPI_NUMA if ACPI
  348. help
  349. Say Y to compile the kernel to support NUMA (Non-Uniform Memory
  350. Access). This option is for configuring high-end multiprocessor
  351. server systems. If in doubt, say N.
  352. config NODES_SHIFT
  353. int "Max num nodes shift(3-10)"
  354. range 3 10
  355. default "10"
  356. depends on NEED_MULTIPLE_NODES
  357. help
  358. This option specifies the maximum number of nodes in your SSI system.
  359. MAX_NUMNODES will be 2^(This value).
  360. If in doubt, use the default.
  361. config ARCH_POPULATES_NODE_MAP
  362. def_bool y
  363. # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
  364. # VIRTUAL_MEM_MAP has been retained for historical reasons.
  365. config VIRTUAL_MEM_MAP
  366. bool "Virtual mem map"
  367. depends on !SPARSEMEM
  368. default y if !IA64_HP_SIM
  369. help
  370. Say Y to compile the kernel with support for a virtual mem map.
  371. This code also only takes effect if a memory hole of greater than
  372. 1 Gb is found during boot. You must turn this option on if you
  373. require the DISCONTIGMEM option for your machine. If you are
  374. unsure, say Y.
  375. config HOLES_IN_ZONE
  376. bool
  377. default y if VIRTUAL_MEM_MAP
  378. config HAVE_ARCH_EARLY_PFN_TO_NID
  379. def_bool y
  380. depends on NEED_MULTIPLE_NODES
  381. config HAVE_ARCH_NODEDATA_EXTENSION
  382. def_bool y
  383. depends on NUMA
  384. config IA32_SUPPORT
  385. bool "Support for Linux/x86 binaries"
  386. help
  387. IA-64 processors can execute IA-32 (X86) instructions. By
  388. saying Y here, the kernel will include IA-32 system call
  389. emulation support which makes it possible to transparently
  390. run IA-32 Linux binaries on an IA-64 Linux system.
  391. If in doubt, say Y.
  392. config COMPAT
  393. bool
  394. depends on IA32_SUPPORT
  395. default y
  396. config COMPAT_FOR_U64_ALIGNMENT
  397. def_bool COMPAT
  398. config IA64_MCA_RECOVERY
  399. tristate "MCA recovery from errors other than TLB."
  400. config PERFMON
  401. bool "Performance monitor support"
  402. help
  403. Selects whether support for the IA-64 performance monitor hardware
  404. is included in the kernel. This makes some kernel data-structures a
  405. little bigger and slows down execution a bit, but it is generally
  406. a good idea to turn this on. If you're unsure, say Y.
  407. config IA64_PALINFO
  408. tristate "/proc/pal support"
  409. help
  410. If you say Y here, you are able to get PAL (Processor Abstraction
  411. Layer) information in /proc/pal. This contains useful information
  412. about the processors in your systems, such as cache and TLB sizes
  413. and the PAL firmware version in use.
  414. To use this option, you have to ensure that the "/proc file system
  415. support" (CONFIG_PROC_FS) is enabled, too.
  416. config IA64_MC_ERR_INJECT
  417. tristate "MC error injection support"
  418. help
  419. Adds support for MC error injection. If enabled, the kernel
  420. will provide a sysfs interface for user applications to
  421. call MC error injection PAL procedures to inject various errors.
  422. This is a useful tool for MCA testing.
  423. If you're unsure, do not select this option.
  424. config SGI_SN
  425. def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
  426. config IA64_ESI
  427. bool "ESI (Extensible SAL Interface) support"
  428. help
  429. If you say Y here, support is built into the kernel to
  430. make ESI calls. ESI calls are used to support vendor-specific
  431. firmware extensions, such as the ability to inject memory-errors
  432. for test-purposes. If you're unsure, say N.
  433. config IA64_HP_AML_NFW
  434. bool "Support ACPI AML calls to native firmware"
  435. help
  436. This driver installs a global ACPI Operation Region handler for
  437. region 0xA1. AML methods can use this OpRegion to call arbitrary
  438. native firmware functions. The driver installs the OpRegion
  439. handler if there is an HPQ5001 device or if the user supplies
  440. the "force" module parameter, e.g., with the "aml_nfw.force"
  441. kernel command line option.
  442. source "drivers/sn/Kconfig"
  443. config KEXEC
  444. bool "kexec system call (EXPERIMENTAL)"
  445. depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
  446. help
  447. kexec is a system call that implements the ability to shutdown your
  448. current kernel, and to start another kernel. It is like a reboot
  449. but it is independent of the system firmware. And like a reboot
  450. you can start any kernel with it, not just Linux.
  451. The name comes from the similarity to the exec system call.
  452. It is an ongoing process to be certain the hardware in a machine
  453. is properly shutdown, so do not be surprised if this code does not
  454. initially work for you. It may help to enable device hotplugging
  455. support. As of this writing the exact hardware interface is
  456. strongly in flux, so no good recommendation can be made.
  457. config CRASH_DUMP
  458. bool "kernel crash dumps"
  459. depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
  460. help
  461. Generate crash dump after being started by kexec.
  462. source "drivers/firmware/Kconfig"
  463. source "fs/Kconfig.binfmt"
  464. endmenu
  465. menu "Power management and ACPI"
  466. source "kernel/power/Kconfig"
  467. source "drivers/acpi/Kconfig"
  468. if PM
  469. source "arch/ia64/kernel/cpufreq/Kconfig"
  470. endif
  471. endmenu
  472. if !IA64_HP_SIM
  473. menu "Bus options (PCI, PCMCIA)"
  474. config PCI
  475. bool "PCI support"
  476. help
  477. Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
  478. here unless you are using a simulator without PCI support.
  479. config PCI_DOMAINS
  480. def_bool PCI
  481. config PCI_SYSCALL
  482. def_bool PCI
  483. source "drivers/pci/pcie/Kconfig"
  484. source "drivers/pci/Kconfig"
  485. source "drivers/pci/hotplug/Kconfig"
  486. source "drivers/pcmcia/Kconfig"
  487. endmenu
  488. endif
  489. source "net/Kconfig"
  490. source "drivers/Kconfig"
  491. config MSPEC
  492. tristate "Memory special operations driver"
  493. depends on IA64
  494. select IA64_UNCACHED_ALLOCATOR
  495. help
  496. If you have an ia64 and you want to enable memory special
  497. operations support (formerly known as fetchop), say Y here,
  498. otherwise say N.
  499. source "fs/Kconfig"
  500. source "arch/ia64/kvm/Kconfig"
  501. source "lib/Kconfig"
  502. #
  503. # Use the generic interrupt handling code in kernel/irq/:
  504. #
  505. config GENERIC_HARDIRQS
  506. bool
  507. default y
  508. config GENERIC_IRQ_PROBE
  509. bool
  510. default y
  511. config GENERIC_PENDING_IRQ
  512. bool
  513. depends on GENERIC_HARDIRQS && SMP
  514. default y
  515. config IRQ_PER_CPU
  516. bool
  517. default y
  518. config IOMMU_HELPER
  519. def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)
  520. source "arch/ia64/hp/sim/Kconfig"
  521. source "arch/ia64/Kconfig.debug"
  522. source "security/Kconfig"
  523. source "crypto/Kconfig"