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 COMMON_CLKDEV
  224. select ARCH_REQUIRE_GPIOLIB
  225. help
  226. This enables support for the Cirrus EP93xx series of CPUs.
  227. config ARCH_FOOTBRIDGE
  228. bool "FootBridge"
  229. select FOOTBRIDGE
  230. help
  231. Support for systems based on the DC21285 companion chip
  232. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  233. config ARCH_NETX
  234. bool "Hilscher NetX based"
  235. select ARM_VIC
  236. help
  237. This enables support for systems based on the Hilscher NetX Soc
  238. config ARCH_H720X
  239. bool "Hynix HMS720x-based"
  240. select ISA_DMA_API
  241. help
  242. This enables support for systems based on the Hynix HMS720x
  243. config ARCH_IMX
  244. bool "IMX"
  245. select GENERIC_GPIO
  246. select GENERIC_TIME
  247. select GENERIC_CLOCKEVENTS
  248. help
  249. Support for Motorola's i.MX family of processors (MX1, MXL).
  250. config ARCH_IOP13XX
  251. bool "IOP13xx-based"
  252. depends on MMU
  253. select PLAT_IOP
  254. select PCI
  255. select ARCH_SUPPORTS_MSI
  256. select VMSPLIT_1G
  257. help
  258. Support for Intel's IOP13XX (XScale) family of processors.
  259. config ARCH_IOP32X
  260. bool "IOP32x-based"
  261. depends on MMU
  262. select PLAT_IOP
  263. select PCI
  264. select GENERIC_GPIO
  265. select ARCH_REQUIRE_GPIOLIB
  266. help
  267. Support for Intel's 80219 and IOP32X (XScale) family of
  268. processors.
  269. config ARCH_IOP33X
  270. bool "IOP33x-based"
  271. depends on MMU
  272. select PLAT_IOP
  273. select PCI
  274. select GENERIC_GPIO
  275. select ARCH_REQUIRE_GPIOLIB
  276. help
  277. Support for Intel's IOP33X (XScale) family of processors.
  278. config ARCH_IXP23XX
  279. bool "IXP23XX-based"
  280. depends on MMU
  281. select PCI
  282. help
  283. Support for Intel's IXP23xx (XScale) family of processors.
  284. config ARCH_IXP2000
  285. bool "IXP2400/2800-based"
  286. depends on MMU
  287. select PCI
  288. help
  289. Support for Intel's IXP2400/2800 (XScale) family of processors.
  290. config ARCH_IXP4XX
  291. bool "IXP4xx-based"
  292. depends on MMU
  293. select GENERIC_GPIO
  294. select GENERIC_TIME
  295. select GENERIC_CLOCKEVENTS
  296. select DMABOUNCE if PCI
  297. help
  298. Support for Intel's IXP4XX (XScale) family of processors.
  299. config ARCH_L7200
  300. bool "LinkUp-L7200"
  301. select FIQ
  302. help
  303. Say Y here if you intend to run this kernel on a LinkUp Systems
  304. L7200 Software Development Board which uses an ARM720T processor.
  305. Information on this board can be obtained at:
  306. <http://www.linkupsys.com/>
  307. If you have any questions or comments about the Linux kernel port
  308. to this board, send e-mail to <sjhill@cotw.com>.
  309. config ARCH_KIRKWOOD
  310. bool "Marvell Kirkwood"
  311. select PCI
  312. select GENERIC_TIME
  313. select GENERIC_CLOCKEVENTS
  314. select PLAT_ORION
  315. help
  316. Support for the following Marvell Kirkwood series SoCs:
  317. 88F6180, 88F6192 and 88F6281.
  318. config ARCH_KS8695
  319. bool "Micrel/Kendin KS8695"
  320. select GENERIC_GPIO
  321. help
  322. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  323. System-on-Chip devices.
  324. config ARCH_NS9XXX
  325. bool "NetSilicon NS9xxx"
  326. select GENERIC_GPIO
  327. select GENERIC_TIME
  328. select GENERIC_CLOCKEVENTS
  329. select HAVE_CLK
  330. help
  331. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  332. System.
  333. <http://www.digi.com/products/microprocessors/index.jsp>
  334. config ARCH_LOKI
  335. bool "Marvell Loki (88RC8480)"
  336. select GENERIC_TIME
  337. select GENERIC_CLOCKEVENTS
  338. select PLAT_ORION
  339. help
  340. Support for the Marvell Loki (88RC8480) SoC.
  341. config ARCH_MV78XX0
  342. bool "Marvell MV78xx0"
  343. select PCI
  344. select GENERIC_TIME
  345. select GENERIC_CLOCKEVENTS
  346. select PLAT_ORION
  347. help
  348. Support for the following Marvell MV78xx0 series SoCs:
  349. MV781x0, MV782x0.
  350. config ARCH_MXC
  351. bool "Freescale MXC/iMX-based"
  352. select GENERIC_TIME
  353. select GENERIC_CLOCKEVENTS
  354. select ARCH_MTD_XIP
  355. select GENERIC_GPIO
  356. select ARCH_REQUIRE_GPIOLIB
  357. help
  358. Support for Freescale MXC/iMX-based family of processors
  359. config ARCH_ORION5X
  360. bool "Marvell Orion"
  361. depends on MMU
  362. select PCI
  363. select GENERIC_GPIO
  364. select GENERIC_TIME
  365. select GENERIC_CLOCKEVENTS
  366. select PLAT_ORION
  367. help
  368. Support for the following Marvell Orion 5x series SoCs:
  369. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  370. Orion-2 (5281), Orion-1-90 (6183).
  371. config ARCH_PNX4008
  372. bool "Philips Nexperia PNX4008 Mobile"
  373. select HAVE_CLK
  374. help
  375. This enables support for Philips PNX4008 mobile platform.
  376. config ARCH_PXA
  377. bool "PXA2xx/PXA3xx-based"
  378. depends on MMU
  379. select ARCH_MTD_XIP
  380. select GENERIC_GPIO
  381. select HAVE_CLK
  382. select COMMON_CLKDEV
  383. select ARCH_REQUIRE_GPIOLIB
  384. select GENERIC_TIME
  385. select GENERIC_CLOCKEVENTS
  386. select TICK_ONESHOT
  387. help
  388. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  389. config ARCH_RPC
  390. bool "RiscPC"
  391. select ARCH_ACORN
  392. select FIQ
  393. select TIMER_ACORN
  394. select ARCH_MAY_HAVE_PC_FDC
  395. select HAVE_PATA_PLATFORM
  396. select ISA_DMA_API
  397. select NO_IOPORT
  398. select ARCH_SPARSEMEM_ENABLE
  399. help
  400. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  401. CD-ROM interface, serial and parallel port, and the floppy drive.
  402. config ARCH_SA1100
  403. bool "SA1100-based"
  404. select ISA
  405. select ARCH_SPARSEMEM_ENABLE
  406. select ARCH_MTD_XIP
  407. select GENERIC_GPIO
  408. select GENERIC_TIME
  409. select GENERIC_CLOCKEVENTS
  410. select HAVE_CLK
  411. select TICK_ONESHOT
  412. select ARCH_REQUIRE_GPIOLIB
  413. help
  414. Support for StrongARM 11x0 based boards.
  415. config ARCH_S3C2410
  416. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  417. select GENERIC_GPIO
  418. select HAVE_CLK
  419. help
  420. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  421. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  422. the Samsung SMDK2410 development board (and derivatives).
  423. config ARCH_SHARK
  424. bool "Shark"
  425. select ISA
  426. select ISA_DMA
  427. select ZONE_DMA
  428. select PCI
  429. help
  430. Support for the StrongARM based Digital DNARD machine, also known
  431. as "Shark" (<http://www.shark-linux.de/shark.html>).
  432. config ARCH_LH7A40X
  433. bool "Sharp LH7A40X"
  434. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  435. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  436. help
  437. Say Y here for systems based on one of the Sharp LH7A40X
  438. System on a Chip processors. These CPUs include an ARM922T
  439. core with a wide array of integrated devices for
  440. hand-held and low-power applications.
  441. config ARCH_DAVINCI
  442. bool "TI DaVinci"
  443. select GENERIC_TIME
  444. select GENERIC_CLOCKEVENTS
  445. select GENERIC_GPIO
  446. select ARCH_REQUIRE_GPIOLIB
  447. select HAVE_CLK
  448. select ZONE_DMA
  449. help
  450. Support for TI's DaVinci platform.
  451. config ARCH_OMAP
  452. bool "TI OMAP"
  453. select GENERIC_GPIO
  454. select HAVE_CLK
  455. select ARCH_REQUIRE_GPIOLIB
  456. select GENERIC_TIME
  457. select GENERIC_CLOCKEVENTS
  458. help
  459. Support for TI's OMAP platform (OMAP1 and OMAP2).
  460. config ARCH_MSM
  461. bool "Qualcomm MSM"
  462. select GENERIC_TIME
  463. select GENERIC_CLOCKEVENTS
  464. help
  465. Support for Qualcomm MSM7K based systems. This runs on the ARM11
  466. apps processor of the MSM7K and depends on a shared memory
  467. interface to the ARM9 modem processor which runs the baseband stack
  468. and controls some vital subsystems (clock and power control, etc).
  469. endchoice
  470. source "arch/arm/mach-clps711x/Kconfig"
  471. source "arch/arm/mach-ep93xx/Kconfig"
  472. source "arch/arm/mach-footbridge/Kconfig"
  473. source "arch/arm/mach-integrator/Kconfig"
  474. source "arch/arm/mach-iop32x/Kconfig"
  475. source "arch/arm/mach-iop33x/Kconfig"
  476. source "arch/arm/mach-iop13xx/Kconfig"
  477. source "arch/arm/mach-ixp4xx/Kconfig"
  478. source "arch/arm/mach-ixp2000/Kconfig"
  479. source "arch/arm/mach-ixp23xx/Kconfig"
  480. source "arch/arm/mach-loki/Kconfig"
  481. source "arch/arm/mach-mv78xx0/Kconfig"
  482. source "arch/arm/mach-pxa/Kconfig"
  483. source "arch/arm/mach-sa1100/Kconfig"
  484. source "arch/arm/plat-omap/Kconfig"
  485. source "arch/arm/mach-omap1/Kconfig"
  486. source "arch/arm/mach-omap2/Kconfig"
  487. source "arch/arm/mach-orion5x/Kconfig"
  488. source "arch/arm/mach-kirkwood/Kconfig"
  489. source "arch/arm/plat-s3c24xx/Kconfig"
  490. source "arch/arm/plat-s3c/Kconfig"
  491. if ARCH_S3C2410
  492. source "arch/arm/mach-s3c2400/Kconfig"
  493. source "arch/arm/mach-s3c2410/Kconfig"
  494. source "arch/arm/mach-s3c2412/Kconfig"
  495. source "arch/arm/mach-s3c2440/Kconfig"
  496. source "arch/arm/mach-s3c2442/Kconfig"
  497. source "arch/arm/mach-s3c2443/Kconfig"
  498. endif
  499. source "arch/arm/mach-lh7a40x/Kconfig"
  500. source "arch/arm/mach-imx/Kconfig"
  501. source "arch/arm/mach-h720x/Kconfig"
  502. source "arch/arm/mach-versatile/Kconfig"
  503. source "arch/arm/mach-aaec2000/Kconfig"
  504. source "arch/arm/mach-realview/Kconfig"
  505. source "arch/arm/mach-at91/Kconfig"
  506. source "arch/arm/plat-mxc/Kconfig"
  507. source "arch/arm/mach-netx/Kconfig"
  508. source "arch/arm/mach-ns9xxx/Kconfig"
  509. source "arch/arm/mach-davinci/Kconfig"
  510. source "arch/arm/mach-ks8695/Kconfig"
  511. source "arch/arm/mach-msm/Kconfig"
  512. # Definitions to make life easier
  513. config ARCH_ACORN
  514. bool
  515. config PLAT_IOP
  516. bool
  517. config PLAT_ORION
  518. bool
  519. source arch/arm/mm/Kconfig
  520. config IWMMXT
  521. bool "Enable iWMMXt support"
  522. depends on CPU_XSCALE || CPU_XSC3
  523. default y if PXA27x || PXA3xx
  524. help
  525. Enable support for iWMMXt context switching at run time if
  526. running on a CPU that supports it.
  527. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  528. config XSCALE_PMU
  529. bool
  530. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  531. default y
  532. if !MMU
  533. source "arch/arm/Kconfig-nommu"
  534. endif
  535. endmenu
  536. source "arch/arm/common/Kconfig"
  537. config FORCE_MAX_ZONEORDER
  538. int
  539. depends on SA1111
  540. default "9"
  541. menu "Bus support"
  542. config ARM_AMBA
  543. bool
  544. config ISA
  545. bool
  546. help
  547. Find out whether you have ISA slots on your motherboard. ISA is the
  548. name of a bus system, i.e. the way the CPU talks to the other stuff
  549. inside your box. Other bus systems are PCI, EISA, MicroChannel
  550. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  551. newer boards don't support it. If you have ISA, say Y, otherwise N.
  552. # Select ISA DMA controller support
  553. config ISA_DMA
  554. bool
  555. select ISA_DMA_API
  556. # Select ISA DMA interface
  557. config ISA_DMA_API
  558. bool
  559. config PCI
  560. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  561. help
  562. Find out whether you have a PCI motherboard. PCI is the name of a
  563. bus system, i.e. the way the CPU talks to the other stuff inside
  564. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  565. VESA. If you have PCI, say Y, otherwise N.
  566. config PCI_SYSCALL
  567. def_bool PCI
  568. # Select the host bridge type
  569. config PCI_HOST_VIA82C505
  570. bool
  571. depends on PCI && ARCH_SHARK
  572. default y
  573. config PCI_HOST_ITE8152
  574. bool
  575. depends on PCI && MACH_ARMCORE
  576. default y
  577. select DMABOUNCE
  578. source "drivers/pci/Kconfig"
  579. source "drivers/pcmcia/Kconfig"
  580. endmenu
  581. menu "Kernel Features"
  582. source "kernel/time/Kconfig"
  583. config SMP
  584. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  585. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
  586. select USE_GENERIC_SMP_HELPERS
  587. help
  588. This enables support for systems with more than one CPU. If you have
  589. a system with only one CPU, like most personal computers, say N. If
  590. you have a system with more than one CPU, say Y.
  591. If you say N here, the kernel will run on single and multiprocessor
  592. machines, but will use only one CPU of a multiprocessor machine. If
  593. you say Y here, the kernel will run on many, but not all, single
  594. processor machines. On a single processor machine, the kernel will
  595. run faster if you say N here.
  596. See also <file:Documentation/i386/IO-APIC.txt>,
  597. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  598. <http://www.linuxdoc.org/docs.html#howto>.
  599. If you don't know what to do here, say N.
  600. choice
  601. prompt "Memory split"
  602. default VMSPLIT_3G
  603. help
  604. Select the desired split between kernel and user memory.
  605. If you are not absolutely sure what you are doing, leave this
  606. option alone!
  607. config VMSPLIT_3G
  608. bool "3G/1G user/kernel split"
  609. config VMSPLIT_2G
  610. bool "2G/2G user/kernel split"
  611. config VMSPLIT_1G
  612. bool "1G/3G user/kernel split"
  613. endchoice
  614. config PAGE_OFFSET
  615. hex
  616. default 0x40000000 if VMSPLIT_1G
  617. default 0x80000000 if VMSPLIT_2G
  618. default 0xC0000000
  619. config NR_CPUS
  620. int "Maximum number of CPUs (2-32)"
  621. range 2 32
  622. depends on SMP
  623. default "4"
  624. config HOTPLUG_CPU
  625. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  626. depends on SMP && HOTPLUG && EXPERIMENTAL
  627. help
  628. Say Y here to experiment with turning CPUs off and on. CPUs
  629. can be controlled through /sys/devices/system/cpu.
  630. config LOCAL_TIMERS
  631. bool "Use local timer interrupts"
  632. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
  633. default y
  634. help
  635. Enable support for local timers on SMP platforms, rather then the
  636. legacy IPI broadcast method. Local timers allows the system
  637. accounting to be spread across the timer interval, preventing a
  638. "thundering herd" at every timer tick.
  639. config PREEMPT
  640. bool "Preemptible Kernel (EXPERIMENTAL)"
  641. depends on EXPERIMENTAL
  642. help
  643. This option reduces the latency of the kernel when reacting to
  644. real-time or interactive events by allowing a low priority process to
  645. be preempted even if it is in kernel mode executing a system call.
  646. This allows applications to run more reliably even when the system is
  647. under load.
  648. Say Y here if you are building a kernel for a desktop, embedded
  649. or real-time system. Say N if you are unsure.
  650. config HZ
  651. int
  652. default 128 if ARCH_L7200
  653. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  654. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  655. default AT91_TIMER_HZ if ARCH_AT91
  656. default 100
  657. config AEABI
  658. bool "Use the ARM EABI to compile the kernel"
  659. help
  660. This option allows for the kernel to be compiled using the latest
  661. ARM ABI (aka EABI). This is only useful if you are using a user
  662. space environment that is also compiled with EABI.
  663. Since there are major incompatibilities between the legacy ABI and
  664. EABI, especially with regard to structure member alignment, this
  665. option also changes the kernel syscall calling convention to
  666. disambiguate both ABIs and allow for backward compatibility support
  667. (selected with CONFIG_OABI_COMPAT).
  668. To use this you need GCC version 4.0.0 or later.
  669. config OABI_COMPAT
  670. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  671. depends on AEABI && EXPERIMENTAL
  672. default y
  673. help
  674. This option preserves the old syscall interface along with the
  675. new (ARM EABI) one. It also provides a compatibility layer to
  676. intercept syscalls that have structure arguments which layout
  677. in memory differs between the legacy ABI and the new ARM EABI
  678. (only for non "thumb" binaries). This option adds a tiny
  679. overhead to all syscalls and produces a slightly larger kernel.
  680. If you know you'll be using only pure EABI user space then you
  681. can say N here. If this option is not selected and you attempt
  682. to execute a legacy ABI binary then the result will be
  683. UNPREDICTABLE (in fact it can be predicted that it won't work
  684. at all). If in doubt say Y.
  685. config ARCH_FLATMEM_HAS_HOLES
  686. bool
  687. default y
  688. depends on FLATMEM
  689. # Discontigmem is deprecated
  690. config ARCH_DISCONTIGMEM_ENABLE
  691. bool
  692. config ARCH_SPARSEMEM_ENABLE
  693. bool
  694. config ARCH_SPARSEMEM_DEFAULT
  695. def_bool ARCH_SPARSEMEM_ENABLE
  696. config ARCH_SELECT_MEMORY_MODEL
  697. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  698. config NODES_SHIFT
  699. int
  700. default "4" if ARCH_LH7A40X
  701. default "2"
  702. depends on NEED_MULTIPLE_NODES
  703. source "mm/Kconfig"
  704. config LEDS
  705. bool "Timer and CPU usage LEDs"
  706. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  707. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  708. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  709. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  710. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  711. ARCH_AT91 || ARCH_DAVINCI || \
  712. ARCH_KS8695 || MACH_RD88F5182
  713. help
  714. If you say Y here, the LEDs on your machine will be used
  715. to provide useful information about your current system status.
  716. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  717. be able to select which LEDs are active using the options below. If
  718. you are compiling a kernel for the EBSA-110 or the LART however, the
  719. red LED will simply flash regularly to indicate that the system is
  720. still functional. It is safe to say Y here if you have a CATS
  721. system, but the driver will do nothing.
  722. config LEDS_TIMER
  723. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  724. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  725. || MACH_OMAP_PERSEUS2
  726. depends on LEDS
  727. depends on !GENERIC_CLOCKEVENTS
  728. default y if ARCH_EBSA110
  729. help
  730. If you say Y here, one of the system LEDs (the green one on the
  731. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  732. will flash regularly to indicate that the system is still
  733. operational. This is mainly useful to kernel hackers who are
  734. debugging unstable kernels.
  735. The LART uses the same LED for both Timer LED and CPU usage LED
  736. functions. You may choose to use both, but the Timer LED function
  737. will overrule the CPU usage LED.
  738. config LEDS_CPU
  739. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  740. !ARCH_OMAP) \
  741. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  742. || MACH_OMAP_PERSEUS2
  743. depends on LEDS
  744. help
  745. If you say Y here, the red LED will be used to give a good real
  746. time indication of CPU usage, by lighting whenever the idle task
  747. is not currently executing.
  748. The LART uses the same LED for both Timer LED and CPU usage LED
  749. functions. You may choose to use both, but the Timer LED function
  750. will overrule the CPU usage LED.
  751. config ALIGNMENT_TRAP
  752. bool
  753. depends on CPU_CP15_MMU
  754. default y if !ARCH_EBSA110
  755. help
  756. ARM processors cannot fetch/store information which is not
  757. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  758. address divisible by 4. On 32-bit ARM processors, these non-aligned
  759. fetch/store instructions will be emulated in software if you say
  760. here, which has a severe performance impact. This is necessary for
  761. correct operation of some network protocols. With an IP-only
  762. configuration it is safe to say N, otherwise say Y.
  763. endmenu
  764. menu "Boot options"
  765. # Compressed boot loader in ROM. Yes, we really want to ask about
  766. # TEXT and BSS so we preserve their values in the config files.
  767. config ZBOOT_ROM_TEXT
  768. hex "Compressed ROM boot loader base address"
  769. default "0"
  770. help
  771. The physical address at which the ROM-able zImage is to be
  772. placed in the target. Platforms which normally make use of
  773. ROM-able zImage formats normally set this to a suitable
  774. value in their defconfig file.
  775. If ZBOOT_ROM is not enabled, this has no effect.
  776. config ZBOOT_ROM_BSS
  777. hex "Compressed ROM boot loader BSS address"
  778. default "0"
  779. help
  780. The base address of an area of read/write memory in the target
  781. for the ROM-able zImage which must be available while the
  782. decompressor is running. It must be large enough to hold the
  783. entire decompressed kernel plus an additional 128 KiB.
  784. Platforms which normally make use of ROM-able zImage formats
  785. normally set this to a suitable value in their defconfig file.
  786. If ZBOOT_ROM is not enabled, this has no effect.
  787. config ZBOOT_ROM
  788. bool "Compressed boot loader in ROM/flash"
  789. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  790. help
  791. Say Y here if you intend to execute your compressed kernel image
  792. (zImage) directly from ROM or flash. If unsure, say N.
  793. config CMDLINE
  794. string "Default kernel command string"
  795. default ""
  796. help
  797. On some architectures (EBSA110 and CATS), there is currently no way
  798. for the boot loader to pass arguments to the kernel. For these
  799. architectures, you should supply some command-line options at build
  800. time by entering them here. As a minimum, you should specify the
  801. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  802. config XIP_KERNEL
  803. bool "Kernel Execute-In-Place from ROM"
  804. depends on !ZBOOT_ROM
  805. help
  806. Execute-In-Place allows the kernel to run from non-volatile storage
  807. directly addressable by the CPU, such as NOR flash. This saves RAM
  808. space since the text section of the kernel is not loaded from flash
  809. to RAM. Read-write sections, such as the data section and stack,
  810. are still copied to RAM. The XIP kernel is not compressed since
  811. it has to run directly from flash, so it will take more space to
  812. store it. The flash address used to link the kernel object files,
  813. and for storing it, is configuration dependent. Therefore, if you
  814. say Y here, you must know the proper physical address where to
  815. store the kernel image depending on your own flash memory usage.
  816. Also note that the make target becomes "make xipImage" rather than
  817. "make zImage" or "make Image". The final kernel binary to put in
  818. ROM memory will be arch/arm/boot/xipImage.
  819. If unsure, say N.
  820. config XIP_PHYS_ADDR
  821. hex "XIP Kernel Physical Location"
  822. depends on XIP_KERNEL
  823. default "0x00080000"
  824. help
  825. This is the physical address in your flash memory the kernel will
  826. be linked for and stored to. This address is dependent on your
  827. own flash usage.
  828. config KEXEC
  829. bool "Kexec system call (EXPERIMENTAL)"
  830. depends on EXPERIMENTAL
  831. help
  832. kexec is a system call that implements the ability to shutdown your
  833. current kernel, and to start another kernel. It is like a reboot
  834. but it is independent of the system firmware. And like a reboot
  835. you can start any kernel with it, not just Linux.
  836. It is an ongoing process to be certain the hardware in a machine
  837. is properly shutdown, so do not be surprised if this code does not
  838. initially work for you. It may help to enable device hotplugging
  839. support.
  840. config ATAGS_PROC
  841. bool "Export atags in procfs"
  842. depends on KEXEC
  843. default y
  844. help
  845. Should the atags used to boot the kernel be exported in an "atags"
  846. file in procfs. Useful with kexec.
  847. endmenu
  848. menu "CPU Power Management"
  849. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
  850. source "drivers/cpufreq/Kconfig"
  851. config CPU_FREQ_SA1100
  852. bool
  853. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  854. default y
  855. config CPU_FREQ_SA1110
  856. bool
  857. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  858. default y
  859. config CPU_FREQ_INTEGRATOR
  860. tristate "CPUfreq driver for ARM Integrator CPUs"
  861. depends on ARCH_INTEGRATOR && CPU_FREQ
  862. default y
  863. help
  864. This enables the CPUfreq driver for ARM Integrator CPUs.
  865. For details, take a look at <file:Documentation/cpu-freq>.
  866. If in doubt, say Y.
  867. config CPU_FREQ_IMX
  868. tristate "CPUfreq driver for i.MX CPUs"
  869. depends on ARCH_IMX && CPU_FREQ
  870. default n
  871. help
  872. This enables the CPUfreq driver for i.MX CPUs.
  873. If in doubt, say N.
  874. config CPU_FREQ_PXA
  875. bool
  876. depends on CPU_FREQ && ARCH_PXA && PXA25x
  877. default y
  878. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  879. endif
  880. source "drivers/cpuidle/Kconfig"
  881. endmenu
  882. menu "Floating point emulation"
  883. comment "At least one emulation must be selected"
  884. config FPE_NWFPE
  885. bool "NWFPE math emulation"
  886. depends on !AEABI || OABI_COMPAT
  887. ---help---
  888. Say Y to include the NWFPE floating point emulator in the kernel.
  889. This is necessary to run most binaries. Linux does not currently
  890. support floating point hardware so you need to say Y here even if
  891. your machine has an FPA or floating point co-processor podule.
  892. You may say N here if you are going to load the Acorn FPEmulator
  893. early in the bootup.
  894. config FPE_NWFPE_XP
  895. bool "Support extended precision"
  896. depends on FPE_NWFPE
  897. help
  898. Say Y to include 80-bit support in the kernel floating-point
  899. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  900. Note that gcc does not generate 80-bit operations by default,
  901. so in most cases this option only enlarges the size of the
  902. floating point emulator without any good reason.
  903. You almost surely want to say N here.
  904. config FPE_FASTFPE
  905. bool "FastFPE math emulation (EXPERIMENTAL)"
  906. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  907. ---help---
  908. Say Y here to include the FAST floating point emulator in the kernel.
  909. This is an experimental much faster emulator which now also has full
  910. precision for the mantissa. It does not support any exceptions.
  911. It is very simple, and approximately 3-6 times faster than NWFPE.
  912. It should be sufficient for most programs. It may be not suitable
  913. for scientific calculations, but you have to check this for yourself.
  914. If you do not feel you need a faster FP emulation you should better
  915. choose NWFPE.
  916. config VFP
  917. bool "VFP-format floating point maths"
  918. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  919. help
  920. Say Y to include VFP support code in the kernel. This is needed
  921. if your hardware includes a VFP unit.
  922. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  923. release notes and additional status information.
  924. Say N if your target does not have VFP hardware.
  925. config VFPv3
  926. bool
  927. depends on VFP
  928. default y if CPU_V7
  929. config NEON
  930. bool "Advanced SIMD (NEON) Extension support"
  931. depends on VFPv3 && CPU_V7
  932. help
  933. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  934. Extension.
  935. endmenu
  936. menu "Userspace binary formats"
  937. source "fs/Kconfig.binfmt"
  938. config ARTHUR
  939. tristate "RISC OS personality"
  940. depends on !AEABI
  941. help
  942. Say Y here to include the kernel code necessary if you want to run
  943. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  944. experimental; if this sounds frightening, say N and sleep in peace.
  945. You can also say M here to compile this support as a module (which
  946. will be called arthur).
  947. endmenu
  948. menu "Power management options"
  949. source "kernel/power/Kconfig"
  950. config ARCH_SUSPEND_POSSIBLE
  951. def_bool y
  952. endmenu
  953. source "net/Kconfig"
  954. menu "Device Drivers"
  955. source "drivers/base/Kconfig"
  956. source "drivers/connector/Kconfig"
  957. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  958. source "drivers/mtd/Kconfig"
  959. endif
  960. source "drivers/parport/Kconfig"
  961. source "drivers/pnp/Kconfig"
  962. source "drivers/block/Kconfig"
  963. # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
  964. source "drivers/misc/Kconfig"
  965. source "drivers/ide/Kconfig"
  966. source "drivers/scsi/Kconfig"
  967. source "drivers/ata/Kconfig"
  968. source "drivers/md/Kconfig"
  969. source "drivers/message/fusion/Kconfig"
  970. source "drivers/ieee1394/Kconfig"
  971. source "drivers/message/i2o/Kconfig"
  972. source "drivers/net/Kconfig"
  973. source "drivers/isdn/Kconfig"
  974. # input before char - char/joystick depends on it. As does USB.
  975. source "drivers/input/Kconfig"
  976. source "drivers/char/Kconfig"
  977. source "drivers/i2c/Kconfig"
  978. source "drivers/spi/Kconfig"
  979. source "drivers/gpio/Kconfig"
  980. source "drivers/w1/Kconfig"
  981. source "drivers/power/Kconfig"
  982. source "drivers/hwmon/Kconfig"
  983. source "drivers/thermal/Kconfig"
  984. source "drivers/watchdog/Kconfig"
  985. source "drivers/ssb/Kconfig"
  986. #source "drivers/l3/Kconfig"
  987. source "drivers/mfd/Kconfig"
  988. source "drivers/media/Kconfig"
  989. source "drivers/video/Kconfig"
  990. source "sound/Kconfig"
  991. source "drivers/hid/Kconfig"
  992. source "drivers/usb/Kconfig"
  993. source "drivers/uwb/Kconfig"
  994. source "drivers/mmc/Kconfig"
  995. source "drivers/memstick/Kconfig"
  996. source "drivers/accessibility/Kconfig"
  997. source "drivers/leds/Kconfig"
  998. source "drivers/rtc/Kconfig"
  999. source "drivers/dma/Kconfig"
  1000. source "drivers/dca/Kconfig"
  1001. source "drivers/auxdisplay/Kconfig"
  1002. source "drivers/regulator/Kconfig"
  1003. source "drivers/uio/Kconfig"
  1004. endmenu
  1005. source "fs/Kconfig"
  1006. source "arch/arm/Kconfig.debug"
  1007. source "security/Kconfig"
  1008. source "crypto/Kconfig"
  1009. source "lib/Kconfig"