Kconfig 31 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 "Linux Kernel Configuration"
  6. config ARM
  7. bool
  8. default y
  9. select HAVE_AOUT
  10. select HAVE_IDE
  11. select RTC_LIB
  12. select SYS_SUPPORTS_APM_EMULATION
  13. select HAVE_OPROFILE
  14. select HAVE_ARCH_KGDB
  15. select HAVE_KPROBES if (!XIP_KERNEL)
  16. select HAVE_KRETPROBES if (HAVE_KPROBES)
  17. select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  18. select HAVE_GENERIC_DMA_COHERENT
  19. help
  20. The ARM series is a line of low-power-consumption RISC chip designs
  21. licensed by ARM Ltd and targeted at embedded applications and
  22. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  23. manufactured, but legacy ARM-based PC hardware remains popular in
  24. Europe. There is an ARM Linux project with a web page at
  25. <http://www.arm.linux.org.uk/>.
  26. config HAVE_PWM
  27. bool
  28. config SYS_SUPPORTS_APM_EMULATION
  29. bool
  30. config GENERIC_GPIO
  31. bool
  32. default n
  33. config GENERIC_TIME
  34. bool
  35. default n
  36. config GENERIC_CLOCKEVENTS
  37. bool
  38. default n
  39. config GENERIC_CLOCKEVENTS_BROADCAST
  40. bool
  41. depends on GENERIC_CLOCKEVENTS
  42. default y if SMP && !LOCAL_TIMERS
  43. config MMU
  44. bool
  45. default y
  46. config NO_IOPORT
  47. bool
  48. default n
  49. config EISA
  50. bool
  51. ---help---
  52. The Extended Industry Standard Architecture (EISA) bus was
  53. developed as an open alternative to the IBM MicroChannel bus.
  54. The EISA bus provided some of the features of the IBM MicroChannel
  55. bus while maintaining backward compatibility with cards made for
  56. the older ISA bus. The EISA bus saw limited use between 1988 and
  57. 1995 when it was made obsolete by the PCI bus.
  58. Say Y here if you are building a kernel for an EISA-based machine.
  59. Otherwise, say N.
  60. config SBUS
  61. bool
  62. config MCA
  63. bool
  64. help
  65. MicroChannel Architecture is found in some IBM PS/2 machines and
  66. laptops. It is a bus system similar to PCI or ISA. See
  67. <file:Documentation/mca.txt> (and especially the web page given
  68. there) before attempting to build an MCA bus kernel.
  69. config GENERIC_HARDIRQS
  70. bool
  71. default y
  72. config STACKTRACE_SUPPORT
  73. bool
  74. default y
  75. config HAVE_LATENCYTOP_SUPPORT
  76. bool
  77. depends on !SMP
  78. default y
  79. config LOCKDEP_SUPPORT
  80. bool
  81. default y
  82. config TRACE_IRQFLAGS_SUPPORT
  83. bool
  84. default y
  85. config HARDIRQS_SW_RESEND
  86. bool
  87. default y
  88. config GENERIC_IRQ_PROBE
  89. bool
  90. default y
  91. config GENERIC_LOCKBREAK
  92. bool
  93. default y
  94. depends on SMP && PREEMPT
  95. config RWSEM_GENERIC_SPINLOCK
  96. bool
  97. default y
  98. config RWSEM_XCHGADD_ALGORITHM
  99. bool
  100. config ARCH_HAS_ILOG2_U32
  101. bool
  102. default n
  103. config ARCH_HAS_ILOG2_U64
  104. bool
  105. default n
  106. config GENERIC_HWEIGHT
  107. bool
  108. default y
  109. config GENERIC_CALIBRATE_DELAY
  110. bool
  111. default y
  112. config ARCH_MAY_HAVE_PC_FDC
  113. bool
  114. config ZONE_DMA
  115. bool
  116. config GENERIC_ISA_DMA
  117. bool
  118. config FIQ
  119. bool
  120. config ARCH_MTD_XIP
  121. bool
  122. config GENERIC_HARDIRQS_NO__DO_IRQ
  123. bool
  124. def_bool y
  125. if OPROFILE
  126. config OPROFILE_ARMV6
  127. def_bool y
  128. depends on CPU_V6 && !SMP
  129. select OPROFILE_ARM11_CORE
  130. config OPROFILE_MPCORE
  131. def_bool y
  132. depends on CPU_V6 && SMP
  133. select OPROFILE_ARM11_CORE
  134. config OPROFILE_ARM11_CORE
  135. bool
  136. config OPROFILE_ARMV7
  137. def_bool y
  138. depends on CPU_V7 && !SMP
  139. bool
  140. endif
  141. config VECTORS_BASE
  142. hex
  143. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  144. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  145. default 0x00000000
  146. help
  147. The base address of exception vectors.
  148. source "init/Kconfig"
  149. source "kernel/Kconfig.freezer"
  150. menu "System Type"
  151. choice
  152. prompt "ARM system type"
  153. default ARCH_VERSATILE
  154. config ARCH_AAEC2000
  155. bool "Agilent AAEC-2000 based"
  156. select ARM_AMBA
  157. select HAVE_CLK
  158. help
  159. This enables support for systems based on the Agilent AAEC-2000
  160. config ARCH_INTEGRATOR
  161. bool "ARM Ltd. Integrator family"
  162. select ARM_AMBA
  163. select HAVE_CLK
  164. select COMMON_CLKDEV
  165. select ICST525
  166. help
  167. Support for ARM's Integrator platform.
  168. config ARCH_REALVIEW
  169. bool "ARM Ltd. RealView family"
  170. select ARM_AMBA
  171. select HAVE_CLK
  172. select COMMON_CLKDEV
  173. select ICST307
  174. select GENERIC_TIME
  175. select GENERIC_CLOCKEVENTS
  176. help
  177. This enables support for ARM Ltd RealView boards.
  178. config ARCH_VERSATILE
  179. bool "ARM Ltd. Versatile family"
  180. select ARM_AMBA
  181. select ARM_VIC
  182. select HAVE_CLK
  183. select COMMON_CLKDEV
  184. select ICST307
  185. select GENERIC_TIME
  186. select GENERIC_CLOCKEVENTS
  187. help
  188. This enables support for ARM Ltd Versatile board.
  189. config ARCH_AT91
  190. bool "Atmel AT91"
  191. select GENERIC_GPIO
  192. select HAVE_CLK
  193. help
  194. This enables support for systems based on the Atmel AT91RM9200,
  195. AT91SAM9 and AT91CAP9 processors.
  196. config ARCH_CLPS7500
  197. bool "Cirrus CL-PS7500FE"
  198. select TIMER_ACORN
  199. select ISA
  200. select NO_IOPORT
  201. select ARCH_SPARSEMEM_ENABLE
  202. help
  203. Support for the Cirrus Logic PS7500FE system-on-a-chip.
  204. config ARCH_CLPS711X
  205. bool "Cirrus Logic CLPS711x/EP721x-based"
  206. help
  207. Support for Cirrus Logic 711x/721x based boards.
  208. config ARCH_EBSA110
  209. bool "EBSA-110"
  210. select ISA
  211. select NO_IOPORT
  212. help
  213. This is an evaluation board for the StrongARM processor available
  214. from Digital. It has limited hardware on-board, including an
  215. Ethernet interface, two PCMCIA sockets, two serial ports and a
  216. parallel port.
  217. config ARCH_EP93XX
  218. bool "EP93xx-based"
  219. select ARM_AMBA
  220. select ARM_VIC
  221. select GENERIC_GPIO
  222. select HAVE_CLK
  223. select ARCH_REQUIRE_GPIOLIB
  224. help
  225. This enables support for the Cirrus EP93xx series of CPUs.
  226. config ARCH_FOOTBRIDGE
  227. bool "FootBridge"
  228. select FOOTBRIDGE
  229. help
  230. Support for systems based on the DC21285 companion chip
  231. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  232. config ARCH_NETX
  233. bool "Hilscher NetX based"
  234. select ARM_VIC
  235. help
  236. This enables support for systems based on the Hilscher NetX Soc
  237. config ARCH_H720X
  238. bool "Hynix HMS720x-based"
  239. select ISA_DMA_API
  240. help
  241. This enables support for systems based on the Hynix HMS720x
  242. config ARCH_IMX
  243. bool "IMX"
  244. select GENERIC_GPIO
  245. select GENERIC_TIME
  246. select GENERIC_CLOCKEVENTS
  247. help
  248. Support for Motorola's i.MX family of processors (MX1, MXL).
  249. config ARCH_IOP13XX
  250. bool "IOP13xx-based"
  251. depends on MMU
  252. select PLAT_IOP
  253. select PCI
  254. select ARCH_SUPPORTS_MSI
  255. select VMSPLIT_1G
  256. help
  257. Support for Intel's IOP13XX (XScale) family of processors.
  258. config ARCH_IOP32X
  259. bool "IOP32x-based"
  260. depends on MMU
  261. select PLAT_IOP
  262. select PCI
  263. select GENERIC_GPIO
  264. select ARCH_REQUIRE_GPIOLIB
  265. help
  266. Support for Intel's 80219 and IOP32X (XScale) family of
  267. processors.
  268. config ARCH_IOP33X
  269. bool "IOP33x-based"
  270. depends on MMU
  271. select PLAT_IOP
  272. select PCI
  273. select GENERIC_GPIO
  274. select ARCH_REQUIRE_GPIOLIB
  275. help
  276. Support for Intel's IOP33X (XScale) family of processors.
  277. config ARCH_IXP23XX
  278. bool "IXP23XX-based"
  279. depends on MMU
  280. select PCI
  281. help
  282. Support for Intel's IXP23xx (XScale) family of processors.
  283. config ARCH_IXP2000
  284. bool "IXP2400/2800-based"
  285. depends on MMU
  286. select PCI
  287. help
  288. Support for Intel's IXP2400/2800 (XScale) family of processors.
  289. config ARCH_IXP4XX
  290. bool "IXP4xx-based"
  291. depends on MMU
  292. select GENERIC_GPIO
  293. select GENERIC_TIME
  294. select GENERIC_CLOCKEVENTS
  295. select DMABOUNCE if PCI
  296. help
  297. Support for Intel's IXP4XX (XScale) family of processors.
  298. config ARCH_L7200
  299. bool "LinkUp-L7200"
  300. select FIQ
  301. help
  302. Say Y here if you intend to run this kernel on a LinkUp Systems
  303. L7200 Software Development Board which uses an ARM720T processor.
  304. Information on this board can be obtained at:
  305. <http://www.linkupsys.com/>
  306. If you have any questions or comments about the Linux kernel port
  307. to this board, send e-mail to <sjhill@cotw.com>.
  308. config ARCH_KIRKWOOD
  309. bool "Marvell Kirkwood"
  310. select PCI
  311. select GENERIC_TIME
  312. select GENERIC_CLOCKEVENTS
  313. select PLAT_ORION
  314. help
  315. Support for the following Marvell Kirkwood series SoCs:
  316. 88F6180, 88F6192 and 88F6281.
  317. config ARCH_KS8695
  318. bool "Micrel/Kendin KS8695"
  319. select GENERIC_GPIO
  320. help
  321. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  322. System-on-Chip devices.
  323. config ARCH_NS9XXX
  324. bool "NetSilicon NS9xxx"
  325. select GENERIC_GPIO
  326. select GENERIC_TIME
  327. select GENERIC_CLOCKEVENTS
  328. select HAVE_CLK
  329. help
  330. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  331. System.
  332. <http://www.digi.com/products/microprocessors/index.jsp>
  333. config ARCH_LOKI
  334. bool "Marvell Loki (88RC8480)"
  335. select GENERIC_TIME
  336. select GENERIC_CLOCKEVENTS
  337. select PLAT_ORION
  338. help
  339. Support for the Marvell Loki (88RC8480) SoC.
  340. config ARCH_MV78XX0
  341. bool "Marvell MV78xx0"
  342. select PCI
  343. select GENERIC_TIME
  344. select GENERIC_CLOCKEVENTS
  345. select PLAT_ORION
  346. help
  347. Support for the following Marvell MV78xx0 series SoCs:
  348. MV781x0, MV782x0.
  349. config ARCH_MXC
  350. bool "Freescale MXC/iMX-based"
  351. select GENERIC_TIME
  352. select GENERIC_CLOCKEVENTS
  353. select ARCH_MTD_XIP
  354. select GENERIC_GPIO
  355. select ARCH_REQUIRE_GPIOLIB
  356. help
  357. Support for Freescale MXC/iMX-based family of processors
  358. config ARCH_ORION5X
  359. bool "Marvell Orion"
  360. depends on MMU
  361. select PCI
  362. select GENERIC_GPIO
  363. select GENERIC_TIME
  364. select GENERIC_CLOCKEVENTS
  365. select PLAT_ORION
  366. help
  367. Support for the following Marvell Orion 5x series SoCs:
  368. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  369. Orion-2 (5281), Orion-1-90 (6183).
  370. config ARCH_PNX4008
  371. bool "Philips Nexperia PNX4008 Mobile"
  372. select HAVE_CLK
  373. help
  374. This enables support for Philips PNX4008 mobile platform.
  375. config ARCH_PXA
  376. bool "PXA2xx/PXA3xx-based"
  377. depends on MMU
  378. select ARCH_MTD_XIP
  379. select GENERIC_GPIO
  380. select HAVE_CLK
  381. select ARCH_REQUIRE_GPIOLIB
  382. select GENERIC_TIME
  383. select GENERIC_CLOCKEVENTS
  384. select TICK_ONESHOT
  385. help
  386. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  387. config ARCH_RPC
  388. bool "RiscPC"
  389. select ARCH_ACORN
  390. select FIQ
  391. select TIMER_ACORN
  392. select ARCH_MAY_HAVE_PC_FDC
  393. select HAVE_PATA_PLATFORM
  394. select ISA_DMA_API
  395. select NO_IOPORT
  396. select ARCH_SPARSEMEM_ENABLE
  397. help
  398. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  399. CD-ROM interface, serial and parallel port, and the floppy drive.
  400. config ARCH_SA1100
  401. bool "SA1100-based"
  402. select ISA
  403. select ARCH_SPARSEMEM_ENABLE
  404. select ARCH_MTD_XIP
  405. select GENERIC_GPIO
  406. select GENERIC_TIME
  407. select GENERIC_CLOCKEVENTS
  408. select HAVE_CLK
  409. select TICK_ONESHOT
  410. select ARCH_REQUIRE_GPIOLIB
  411. help
  412. Support for StrongARM 11x0 based boards.
  413. config ARCH_S3C2410
  414. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  415. select GENERIC_GPIO
  416. select HAVE_CLK
  417. help
  418. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  419. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  420. the Samsung SMDK2410 development board (and derivatives).
  421. config ARCH_SHARK
  422. bool "Shark"
  423. select ISA
  424. select ISA_DMA
  425. select ZONE_DMA
  426. select PCI
  427. help
  428. Support for the StrongARM based Digital DNARD machine, also known
  429. as "Shark" (<http://www.shark-linux.de/shark.html>).
  430. config ARCH_LH7A40X
  431. bool "Sharp LH7A40X"
  432. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  433. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  434. help
  435. Say Y here for systems based on one of the Sharp LH7A40X
  436. System on a Chip processors. These CPUs include an ARM922T
  437. core with a wide array of integrated devices for
  438. hand-held and low-power applications.
  439. config ARCH_DAVINCI
  440. bool "TI DaVinci"
  441. select GENERIC_TIME
  442. select GENERIC_CLOCKEVENTS
  443. select GENERIC_GPIO
  444. select ARCH_REQUIRE_GPIOLIB
  445. select HAVE_CLK
  446. select ZONE_DMA
  447. help
  448. Support for TI's DaVinci platform.
  449. config ARCH_OMAP
  450. bool "TI OMAP"
  451. select GENERIC_GPIO
  452. select HAVE_CLK
  453. select ARCH_REQUIRE_GPIOLIB
  454. select GENERIC_TIME
  455. select GENERIC_CLOCKEVENTS
  456. help
  457. Support for TI's OMAP platform (OMAP1 and OMAP2).
  458. config ARCH_MSM
  459. bool "Qualcomm MSM"
  460. select GENERIC_TIME
  461. select GENERIC_CLOCKEVENTS
  462. help
  463. Support for Qualcomm MSM7K based systems. This runs on the ARM11
  464. apps processor of the MSM7K and depends on a shared memory
  465. interface to the ARM9 modem processor which runs the baseband stack
  466. and controls some vital subsystems (clock and power control, etc).
  467. endchoice
  468. source "arch/arm/mach-clps711x/Kconfig"
  469. source "arch/arm/mach-ep93xx/Kconfig"
  470. source "arch/arm/mach-footbridge/Kconfig"
  471. source "arch/arm/mach-integrator/Kconfig"
  472. source "arch/arm/mach-iop32x/Kconfig"
  473. source "arch/arm/mach-iop33x/Kconfig"
  474. source "arch/arm/mach-iop13xx/Kconfig"
  475. source "arch/arm/mach-ixp4xx/Kconfig"
  476. source "arch/arm/mach-ixp2000/Kconfig"
  477. source "arch/arm/mach-ixp23xx/Kconfig"
  478. source "arch/arm/mach-loki/Kconfig"
  479. source "arch/arm/mach-mv78xx0/Kconfig"
  480. source "arch/arm/mach-pxa/Kconfig"
  481. source "arch/arm/mach-sa1100/Kconfig"
  482. source "arch/arm/plat-omap/Kconfig"
  483. source "arch/arm/mach-omap1/Kconfig"
  484. source "arch/arm/mach-omap2/Kconfig"
  485. source "arch/arm/mach-orion5x/Kconfig"
  486. source "arch/arm/mach-kirkwood/Kconfig"
  487. source "arch/arm/plat-s3c24xx/Kconfig"
  488. source "arch/arm/plat-s3c/Kconfig"
  489. if ARCH_S3C2410
  490. source "arch/arm/mach-s3c2400/Kconfig"
  491. source "arch/arm/mach-s3c2410/Kconfig"
  492. source "arch/arm/mach-s3c2412/Kconfig"
  493. source "arch/arm/mach-s3c2440/Kconfig"
  494. source "arch/arm/mach-s3c2442/Kconfig"
  495. source "arch/arm/mach-s3c2443/Kconfig"
  496. endif
  497. source "arch/arm/mach-lh7a40x/Kconfig"
  498. source "arch/arm/mach-imx/Kconfig"
  499. source "arch/arm/mach-h720x/Kconfig"
  500. source "arch/arm/mach-versatile/Kconfig"
  501. source "arch/arm/mach-aaec2000/Kconfig"
  502. source "arch/arm/mach-realview/Kconfig"
  503. source "arch/arm/mach-at91/Kconfig"
  504. source "arch/arm/plat-mxc/Kconfig"
  505. source "arch/arm/mach-netx/Kconfig"
  506. source "arch/arm/mach-ns9xxx/Kconfig"
  507. source "arch/arm/mach-davinci/Kconfig"
  508. source "arch/arm/mach-ks8695/Kconfig"
  509. source "arch/arm/mach-msm/Kconfig"
  510. # Definitions to make life easier
  511. config ARCH_ACORN
  512. bool
  513. config PLAT_IOP
  514. bool
  515. config PLAT_ORION
  516. bool
  517. source arch/arm/mm/Kconfig
  518. config IWMMXT
  519. bool "Enable iWMMXt support"
  520. depends on CPU_XSCALE || CPU_XSC3
  521. default y if PXA27x || PXA3xx
  522. help
  523. Enable support for iWMMXt context switching at run time if
  524. running on a CPU that supports it.
  525. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  526. config XSCALE_PMU
  527. bool
  528. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  529. default y
  530. if !MMU
  531. source "arch/arm/Kconfig-nommu"
  532. endif
  533. endmenu
  534. source "arch/arm/common/Kconfig"
  535. config FORCE_MAX_ZONEORDER
  536. int
  537. depends on SA1111
  538. default "9"
  539. menu "Bus support"
  540. config ARM_AMBA
  541. bool
  542. config ISA
  543. bool
  544. help
  545. Find out whether you have ISA slots on your motherboard. ISA is the
  546. name of a bus system, i.e. the way the CPU talks to the other stuff
  547. inside your box. Other bus systems are PCI, EISA, MicroChannel
  548. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  549. newer boards don't support it. If you have ISA, say Y, otherwise N.
  550. # Select ISA DMA controller support
  551. config ISA_DMA
  552. bool
  553. select ISA_DMA_API
  554. # Select ISA DMA interface
  555. config ISA_DMA_API
  556. bool
  557. config PCI
  558. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  559. help
  560. Find out whether you have a PCI motherboard. PCI is the name of a
  561. bus system, i.e. the way the CPU talks to the other stuff inside
  562. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  563. VESA. If you have PCI, say Y, otherwise N.
  564. config PCI_SYSCALL
  565. def_bool PCI
  566. # Select the host bridge type
  567. config PCI_HOST_VIA82C505
  568. bool
  569. depends on PCI && ARCH_SHARK
  570. default y
  571. config PCI_HOST_ITE8152
  572. bool
  573. depends on PCI && MACH_ARMCORE
  574. default y
  575. select DMABOUNCE
  576. source "drivers/pci/Kconfig"
  577. source "drivers/pcmcia/Kconfig"
  578. endmenu
  579. menu "Kernel Features"
  580. source "kernel/time/Kconfig"
  581. config SMP
  582. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  583. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
  584. select USE_GENERIC_SMP_HELPERS
  585. help
  586. This enables support for systems with more than one CPU. If you have
  587. a system with only one CPU, like most personal computers, say N. If
  588. you have a system with more than one CPU, say Y.
  589. If you say N here, the kernel will run on single and multiprocessor
  590. machines, but will use only one CPU of a multiprocessor machine. If
  591. you say Y here, the kernel will run on many, but not all, single
  592. processor machines. On a single processor machine, the kernel will
  593. run faster if you say N here.
  594. See also <file:Documentation/i386/IO-APIC.txt>,
  595. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  596. <http://www.linuxdoc.org/docs.html#howto>.
  597. If you don't know what to do here, say N.
  598. choice
  599. prompt "Memory split"
  600. default VMSPLIT_3G
  601. help
  602. Select the desired split between kernel and user memory.
  603. If you are not absolutely sure what you are doing, leave this
  604. option alone!
  605. config VMSPLIT_3G
  606. bool "3G/1G user/kernel split"
  607. config VMSPLIT_2G
  608. bool "2G/2G user/kernel split"
  609. config VMSPLIT_1G
  610. bool "1G/3G user/kernel split"
  611. endchoice
  612. config PAGE_OFFSET
  613. hex
  614. default 0x40000000 if VMSPLIT_1G
  615. default 0x80000000 if VMSPLIT_2G
  616. default 0xC0000000
  617. config NR_CPUS
  618. int "Maximum number of CPUs (2-32)"
  619. range 2 32
  620. depends on SMP
  621. default "4"
  622. config HOTPLUG_CPU
  623. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  624. depends on SMP && HOTPLUG && EXPERIMENTAL
  625. help
  626. Say Y here to experiment with turning CPUs off and on. CPUs
  627. can be controlled through /sys/devices/system/cpu.
  628. config LOCAL_TIMERS
  629. bool "Use local timer interrupts"
  630. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
  631. default y
  632. help
  633. Enable support for local timers on SMP platforms, rather then the
  634. legacy IPI broadcast method. Local timers allows the system
  635. accounting to be spread across the timer interval, preventing a
  636. "thundering herd" at every timer tick.
  637. config PREEMPT
  638. bool "Preemptible Kernel (EXPERIMENTAL)"
  639. depends on EXPERIMENTAL
  640. help
  641. This option reduces the latency of the kernel when reacting to
  642. real-time or interactive events by allowing a low priority process to
  643. be preempted even if it is in kernel mode executing a system call.
  644. This allows applications to run more reliably even when the system is
  645. under load.
  646. Say Y here if you are building a kernel for a desktop, embedded
  647. or real-time system. Say N if you are unsure.
  648. config HZ
  649. int
  650. default 128 if ARCH_L7200
  651. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  652. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  653. default AT91_TIMER_HZ if ARCH_AT91
  654. default 100
  655. config AEABI
  656. bool "Use the ARM EABI to compile the kernel"
  657. help
  658. This option allows for the kernel to be compiled using the latest
  659. ARM ABI (aka EABI). This is only useful if you are using a user
  660. space environment that is also compiled with EABI.
  661. Since there are major incompatibilities between the legacy ABI and
  662. EABI, especially with regard to structure member alignment, this
  663. option also changes the kernel syscall calling convention to
  664. disambiguate both ABIs and allow for backward compatibility support
  665. (selected with CONFIG_OABI_COMPAT).
  666. To use this you need GCC version 4.0.0 or later.
  667. config OABI_COMPAT
  668. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  669. depends on AEABI && EXPERIMENTAL
  670. default y
  671. help
  672. This option preserves the old syscall interface along with the
  673. new (ARM EABI) one. It also provides a compatibility layer to
  674. intercept syscalls that have structure arguments which layout
  675. in memory differs between the legacy ABI and the new ARM EABI
  676. (only for non "thumb" binaries). This option adds a tiny
  677. overhead to all syscalls and produces a slightly larger kernel.
  678. If you know you'll be using only pure EABI user space then you
  679. can say N here. If this option is not selected and you attempt
  680. to execute a legacy ABI binary then the result will be
  681. UNPREDICTABLE (in fact it can be predicted that it won't work
  682. at all). If in doubt say Y.
  683. config ARCH_FLATMEM_HAS_HOLES
  684. bool
  685. default y
  686. depends on FLATMEM
  687. # Discontigmem is deprecated
  688. config ARCH_DISCONTIGMEM_ENABLE
  689. bool
  690. config ARCH_SPARSEMEM_ENABLE
  691. bool
  692. config ARCH_SPARSEMEM_DEFAULT
  693. def_bool ARCH_SPARSEMEM_ENABLE
  694. config ARCH_SELECT_MEMORY_MODEL
  695. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  696. config NODES_SHIFT
  697. int
  698. default "4" if ARCH_LH7A40X
  699. default "2"
  700. depends on NEED_MULTIPLE_NODES
  701. source "mm/Kconfig"
  702. config LEDS
  703. bool "Timer and CPU usage LEDs"
  704. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  705. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  706. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  707. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  708. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  709. ARCH_AT91 || ARCH_DAVINCI || \
  710. ARCH_KS8695 || MACH_RD88F5182
  711. help
  712. If you say Y here, the LEDs on your machine will be used
  713. to provide useful information about your current system status.
  714. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  715. be able to select which LEDs are active using the options below. If
  716. you are compiling a kernel for the EBSA-110 or the LART however, the
  717. red LED will simply flash regularly to indicate that the system is
  718. still functional. It is safe to say Y here if you have a CATS
  719. system, but the driver will do nothing.
  720. config LEDS_TIMER
  721. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  722. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  723. || MACH_OMAP_PERSEUS2
  724. depends on LEDS
  725. depends on !GENERIC_CLOCKEVENTS
  726. default y if ARCH_EBSA110
  727. help
  728. If you say Y here, one of the system LEDs (the green one on the
  729. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  730. will flash regularly to indicate that the system is still
  731. operational. This is mainly useful to kernel hackers who are
  732. debugging unstable kernels.
  733. The LART uses the same LED for both Timer LED and CPU usage LED
  734. functions. You may choose to use both, but the Timer LED function
  735. will overrule the CPU usage LED.
  736. config LEDS_CPU
  737. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  738. !ARCH_OMAP) \
  739. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  740. || MACH_OMAP_PERSEUS2
  741. depends on LEDS
  742. help
  743. If you say Y here, the red LED will be used to give a good real
  744. time indication of CPU usage, by lighting whenever the idle task
  745. is not currently executing.
  746. The LART uses the same LED for both Timer LED and CPU usage LED
  747. functions. You may choose to use both, but the Timer LED function
  748. will overrule the CPU usage LED.
  749. config ALIGNMENT_TRAP
  750. bool
  751. depends on CPU_CP15_MMU
  752. default y if !ARCH_EBSA110
  753. help
  754. ARM processors cannot fetch/store information which is not
  755. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  756. address divisible by 4. On 32-bit ARM processors, these non-aligned
  757. fetch/store instructions will be emulated in software if you say
  758. here, which has a severe performance impact. This is necessary for
  759. correct operation of some network protocols. With an IP-only
  760. configuration it is safe to say N, otherwise say Y.
  761. endmenu
  762. menu "Boot options"
  763. # Compressed boot loader in ROM. Yes, we really want to ask about
  764. # TEXT and BSS so we preserve their values in the config files.
  765. config ZBOOT_ROM_TEXT
  766. hex "Compressed ROM boot loader base address"
  767. default "0"
  768. help
  769. The physical address at which the ROM-able zImage is to be
  770. placed in the target. Platforms which normally make use of
  771. ROM-able zImage formats normally set this to a suitable
  772. value in their defconfig file.
  773. If ZBOOT_ROM is not enabled, this has no effect.
  774. config ZBOOT_ROM_BSS
  775. hex "Compressed ROM boot loader BSS address"
  776. default "0"
  777. help
  778. The base address of an area of read/write memory in the target
  779. for the ROM-able zImage which must be available while the
  780. decompressor is running. It must be large enough to hold the
  781. entire decompressed kernel plus an additional 128 KiB.
  782. Platforms which normally make use of ROM-able zImage formats
  783. normally set this to a suitable value in their defconfig file.
  784. If ZBOOT_ROM is not enabled, this has no effect.
  785. config ZBOOT_ROM
  786. bool "Compressed boot loader in ROM/flash"
  787. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  788. help
  789. Say Y here if you intend to execute your compressed kernel image
  790. (zImage) directly from ROM or flash. If unsure, say N.
  791. config CMDLINE
  792. string "Default kernel command string"
  793. default ""
  794. help
  795. On some architectures (EBSA110 and CATS), there is currently no way
  796. for the boot loader to pass arguments to the kernel. For these
  797. architectures, you should supply some command-line options at build
  798. time by entering them here. As a minimum, you should specify the
  799. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  800. config XIP_KERNEL
  801. bool "Kernel Execute-In-Place from ROM"
  802. depends on !ZBOOT_ROM
  803. help
  804. Execute-In-Place allows the kernel to run from non-volatile storage
  805. directly addressable by the CPU, such as NOR flash. This saves RAM
  806. space since the text section of the kernel is not loaded from flash
  807. to RAM. Read-write sections, such as the data section and stack,
  808. are still copied to RAM. The XIP kernel is not compressed since
  809. it has to run directly from flash, so it will take more space to
  810. store it. The flash address used to link the kernel object files,
  811. and for storing it, is configuration dependent. Therefore, if you
  812. say Y here, you must know the proper physical address where to
  813. store the kernel image depending on your own flash memory usage.
  814. Also note that the make target becomes "make xipImage" rather than
  815. "make zImage" or "make Image". The final kernel binary to put in
  816. ROM memory will be arch/arm/boot/xipImage.
  817. If unsure, say N.
  818. config XIP_PHYS_ADDR
  819. hex "XIP Kernel Physical Location"
  820. depends on XIP_KERNEL
  821. default "0x00080000"
  822. help
  823. This is the physical address in your flash memory the kernel will
  824. be linked for and stored to. This address is dependent on your
  825. own flash usage.
  826. config KEXEC
  827. bool "Kexec system call (EXPERIMENTAL)"
  828. depends on EXPERIMENTAL
  829. help
  830. kexec is a system call that implements the ability to shutdown your
  831. current kernel, and to start another kernel. It is like a reboot
  832. but it is independent of the system firmware. And like a reboot
  833. you can start any kernel with it, not just Linux.
  834. It is an ongoing process to be certain the hardware in a machine
  835. is properly shutdown, so do not be surprised if this code does not
  836. initially work for you. It may help to enable device hotplugging
  837. support.
  838. config ATAGS_PROC
  839. bool "Export atags in procfs"
  840. depends on KEXEC
  841. default y
  842. help
  843. Should the atags used to boot the kernel be exported in an "atags"
  844. file in procfs. Useful with kexec.
  845. endmenu
  846. menu "CPU Power Management"
  847. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
  848. source "drivers/cpufreq/Kconfig"
  849. config CPU_FREQ_SA1100
  850. bool
  851. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  852. default y
  853. config CPU_FREQ_SA1110
  854. bool
  855. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  856. default y
  857. config CPU_FREQ_INTEGRATOR
  858. tristate "CPUfreq driver for ARM Integrator CPUs"
  859. depends on ARCH_INTEGRATOR && CPU_FREQ
  860. default y
  861. help
  862. This enables the CPUfreq driver for ARM Integrator CPUs.
  863. For details, take a look at <file:Documentation/cpu-freq>.
  864. If in doubt, say Y.
  865. config CPU_FREQ_IMX
  866. tristate "CPUfreq driver for i.MX CPUs"
  867. depends on ARCH_IMX && CPU_FREQ
  868. default n
  869. help
  870. This enables the CPUfreq driver for i.MX CPUs.
  871. If in doubt, say N.
  872. config CPU_FREQ_PXA
  873. bool
  874. depends on CPU_FREQ && ARCH_PXA && PXA25x
  875. default y
  876. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  877. endif
  878. source "drivers/cpuidle/Kconfig"
  879. endmenu
  880. menu "Floating point emulation"
  881. comment "At least one emulation must be selected"
  882. config FPE_NWFPE
  883. bool "NWFPE math emulation"
  884. depends on !AEABI || OABI_COMPAT
  885. ---help---
  886. Say Y to include the NWFPE floating point emulator in the kernel.
  887. This is necessary to run most binaries. Linux does not currently
  888. support floating point hardware so you need to say Y here even if
  889. your machine has an FPA or floating point co-processor podule.
  890. You may say N here if you are going to load the Acorn FPEmulator
  891. early in the bootup.
  892. config FPE_NWFPE_XP
  893. bool "Support extended precision"
  894. depends on FPE_NWFPE
  895. help
  896. Say Y to include 80-bit support in the kernel floating-point
  897. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  898. Note that gcc does not generate 80-bit operations by default,
  899. so in most cases this option only enlarges the size of the
  900. floating point emulator without any good reason.
  901. You almost surely want to say N here.
  902. config FPE_FASTFPE
  903. bool "FastFPE math emulation (EXPERIMENTAL)"
  904. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  905. ---help---
  906. Say Y here to include the FAST floating point emulator in the kernel.
  907. This is an experimental much faster emulator which now also has full
  908. precision for the mantissa. It does not support any exceptions.
  909. It is very simple, and approximately 3-6 times faster than NWFPE.
  910. It should be sufficient for most programs. It may be not suitable
  911. for scientific calculations, but you have to check this for yourself.
  912. If you do not feel you need a faster FP emulation you should better
  913. choose NWFPE.
  914. config VFP
  915. bool "VFP-format floating point maths"
  916. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  917. help
  918. Say Y to include VFP support code in the kernel. This is needed
  919. if your hardware includes a VFP unit.
  920. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  921. release notes and additional status information.
  922. Say N if your target does not have VFP hardware.
  923. config VFPv3
  924. bool
  925. depends on VFP
  926. default y if CPU_V7
  927. config NEON
  928. bool "Advanced SIMD (NEON) Extension support"
  929. depends on VFPv3 && CPU_V7
  930. help
  931. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  932. Extension.
  933. endmenu
  934. menu "Userspace binary formats"
  935. source "fs/Kconfig.binfmt"
  936. config ARTHUR
  937. tristate "RISC OS personality"
  938. depends on !AEABI
  939. help
  940. Say Y here to include the kernel code necessary if you want to run
  941. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  942. experimental; if this sounds frightening, say N and sleep in peace.
  943. You can also say M here to compile this support as a module (which
  944. will be called arthur).
  945. endmenu
  946. menu "Power management options"
  947. source "kernel/power/Kconfig"
  948. config ARCH_SUSPEND_POSSIBLE
  949. def_bool y
  950. endmenu
  951. source "net/Kconfig"
  952. menu "Device Drivers"
  953. source "drivers/base/Kconfig"
  954. source "drivers/connector/Kconfig"
  955. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  956. source "drivers/mtd/Kconfig"
  957. endif
  958. source "drivers/parport/Kconfig"
  959. source "drivers/pnp/Kconfig"
  960. source "drivers/block/Kconfig"
  961. # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
  962. source "drivers/misc/Kconfig"
  963. source "drivers/ide/Kconfig"
  964. source "drivers/scsi/Kconfig"
  965. source "drivers/ata/Kconfig"
  966. source "drivers/md/Kconfig"
  967. source "drivers/message/fusion/Kconfig"
  968. source "drivers/ieee1394/Kconfig"
  969. source "drivers/message/i2o/Kconfig"
  970. source "drivers/net/Kconfig"
  971. source "drivers/isdn/Kconfig"
  972. # input before char - char/joystick depends on it. As does USB.
  973. source "drivers/input/Kconfig"
  974. source "drivers/char/Kconfig"
  975. source "drivers/i2c/Kconfig"
  976. source "drivers/spi/Kconfig"
  977. source "drivers/gpio/Kconfig"
  978. source "drivers/w1/Kconfig"
  979. source "drivers/power/Kconfig"
  980. source "drivers/hwmon/Kconfig"
  981. source "drivers/thermal/Kconfig"
  982. source "drivers/watchdog/Kconfig"
  983. source "drivers/ssb/Kconfig"
  984. #source "drivers/l3/Kconfig"
  985. source "drivers/mfd/Kconfig"
  986. source "drivers/media/Kconfig"
  987. source "drivers/video/Kconfig"
  988. source "sound/Kconfig"
  989. source "drivers/hid/Kconfig"
  990. source "drivers/usb/Kconfig"
  991. source "drivers/uwb/Kconfig"
  992. source "drivers/mmc/Kconfig"
  993. source "drivers/memstick/Kconfig"
  994. source "drivers/accessibility/Kconfig"
  995. source "drivers/leds/Kconfig"
  996. source "drivers/rtc/Kconfig"
  997. source "drivers/dma/Kconfig"
  998. source "drivers/dca/Kconfig"
  999. source "drivers/auxdisplay/Kconfig"
  1000. source "drivers/regulator/Kconfig"
  1001. source "drivers/uio/Kconfig"
  1002. endmenu
  1003. source "fs/Kconfig"
  1004. source "arch/arm/Kconfig.debug"
  1005. source "security/Kconfig"
  1006. source "crypto/Kconfig"
  1007. source "lib/Kconfig"