Kconfig 39 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. config GENERIC_TIME
  33. bool
  34. config GENERIC_CLOCKEVENTS
  35. bool
  36. config GENERIC_CLOCKEVENTS_BROADCAST
  37. bool
  38. depends on GENERIC_CLOCKEVENTS
  39. default y if SMP && !LOCAL_TIMERS
  40. config MMU
  41. bool
  42. default y
  43. config NO_IOPORT
  44. bool
  45. config EISA
  46. bool
  47. ---help---
  48. The Extended Industry Standard Architecture (EISA) bus was
  49. developed as an open alternative to the IBM MicroChannel bus.
  50. The EISA bus provided some of the features of the IBM MicroChannel
  51. bus while maintaining backward compatibility with cards made for
  52. the older ISA bus. The EISA bus saw limited use between 1988 and
  53. 1995 when it was made obsolete by the PCI bus.
  54. Say Y here if you are building a kernel for an EISA-based machine.
  55. Otherwise, say N.
  56. config SBUS
  57. bool
  58. config MCA
  59. bool
  60. help
  61. MicroChannel Architecture is found in some IBM PS/2 machines and
  62. laptops. It is a bus system similar to PCI or ISA. See
  63. <file:Documentation/mca.txt> (and especially the web page given
  64. there) before attempting to build an MCA bus kernel.
  65. config GENERIC_HARDIRQS
  66. bool
  67. default y
  68. config STACKTRACE_SUPPORT
  69. bool
  70. default y
  71. config HAVE_LATENCYTOP_SUPPORT
  72. bool
  73. depends on !SMP
  74. default y
  75. config LOCKDEP_SUPPORT
  76. bool
  77. default y
  78. config TRACE_IRQFLAGS_SUPPORT
  79. bool
  80. default y
  81. config HARDIRQS_SW_RESEND
  82. bool
  83. default y
  84. config GENERIC_IRQ_PROBE
  85. bool
  86. default y
  87. config GENERIC_LOCKBREAK
  88. bool
  89. default y
  90. depends on SMP && PREEMPT
  91. config RWSEM_GENERIC_SPINLOCK
  92. bool
  93. default y
  94. config RWSEM_XCHGADD_ALGORITHM
  95. bool
  96. config ARCH_HAS_ILOG2_U32
  97. bool
  98. config ARCH_HAS_ILOG2_U64
  99. bool
  100. config ARCH_HAS_CPUFREQ
  101. bool
  102. help
  103. Internal node to signify that the ARCH has CPUFREQ support
  104. and that the relevant menu configurations are displayed for
  105. it.
  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. def_bool y
  124. if OPROFILE
  125. config OPROFILE_ARMV6
  126. def_bool y
  127. depends on CPU_V6 && !SMP
  128. select OPROFILE_ARM11_CORE
  129. config OPROFILE_MPCORE
  130. def_bool y
  131. depends on CPU_V6 && SMP
  132. select OPROFILE_ARM11_CORE
  133. config OPROFILE_ARM11_CORE
  134. bool
  135. config OPROFILE_ARMV7
  136. def_bool y
  137. depends on CPU_V7 && !SMP
  138. bool
  139. endif
  140. config VECTORS_BASE
  141. hex
  142. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  143. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  144. default 0x00000000
  145. help
  146. The base address of exception vectors.
  147. source "init/Kconfig"
  148. source "kernel/Kconfig.freezer"
  149. menu "System Type"
  150. choice
  151. prompt "ARM system type"
  152. default ARCH_VERSATILE
  153. config ARCH_AAEC2000
  154. bool "Agilent AAEC-2000 based"
  155. select CPU_ARM920T
  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 ARCH_HAS_CPUFREQ
  164. select HAVE_CLK
  165. select COMMON_CLKDEV
  166. select ICST525
  167. help
  168. Support for ARM's Integrator platform.
  169. config ARCH_REALVIEW
  170. bool "ARM Ltd. RealView family"
  171. select ARM_AMBA
  172. select HAVE_CLK
  173. select COMMON_CLKDEV
  174. select ICST307
  175. select GENERIC_TIME
  176. select GENERIC_CLOCKEVENTS
  177. help
  178. This enables support for ARM Ltd RealView boards.
  179. config ARCH_VERSATILE
  180. bool "ARM Ltd. Versatile family"
  181. select ARM_AMBA
  182. select ARM_VIC
  183. select HAVE_CLK
  184. select COMMON_CLKDEV
  185. select ICST307
  186. select GENERIC_TIME
  187. select GENERIC_CLOCKEVENTS
  188. help
  189. This enables support for ARM Ltd Versatile board.
  190. config ARCH_AT91
  191. bool "Atmel AT91"
  192. select GENERIC_GPIO
  193. select ARCH_REQUIRE_GPIOLIB
  194. select HAVE_CLK
  195. help
  196. This enables support for systems based on the Atmel AT91RM9200,
  197. AT91SAM9 and AT91CAP9 processors.
  198. config ARCH_CLPS711X
  199. bool "Cirrus Logic CLPS711x/EP721x-based"
  200. select CPU_ARM720T
  201. help
  202. Support for Cirrus Logic 711x/721x based boards.
  203. config ARCH_GEMINI
  204. bool "Cortina Systems Gemini"
  205. select CPU_FA526
  206. select GENERIC_GPIO
  207. select ARCH_REQUIRE_GPIOLIB
  208. help
  209. Support for the Cortina Systems Gemini family SoCs
  210. config ARCH_EBSA110
  211. bool "EBSA-110"
  212. select CPU_SA110
  213. select ISA
  214. select NO_IOPORT
  215. help
  216. This is an evaluation board for the StrongARM processor available
  217. from Digital. It has limited hardware on-board, including an
  218. Ethernet interface, two PCMCIA sockets, two serial ports and a
  219. parallel port.
  220. config ARCH_EP93XX
  221. bool "EP93xx-based"
  222. select CPU_ARM920T
  223. select ARM_AMBA
  224. select ARM_VIC
  225. select GENERIC_GPIO
  226. select HAVE_CLK
  227. select COMMON_CLKDEV
  228. select ARCH_REQUIRE_GPIOLIB
  229. select ARCH_HAS_HOLES_MEMORYMODEL
  230. help
  231. This enables support for the Cirrus EP93xx series of CPUs.
  232. config ARCH_FOOTBRIDGE
  233. bool "FootBridge"
  234. select CPU_SA110
  235. select FOOTBRIDGE
  236. help
  237. Support for systems based on the DC21285 companion chip
  238. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  239. config ARCH_MXC
  240. bool "Freescale MXC/iMX-based"
  241. select GENERIC_TIME
  242. select GENERIC_CLOCKEVENTS
  243. select ARCH_MTD_XIP
  244. select GENERIC_GPIO
  245. select ARCH_REQUIRE_GPIOLIB
  246. select HAVE_CLK
  247. help
  248. Support for Freescale MXC/iMX-based family of processors
  249. config ARCH_STMP3XXX
  250. bool "Freescale STMP3xxx"
  251. select CPU_ARM926T
  252. select HAVE_CLK
  253. select COMMON_CLKDEV
  254. select ARCH_REQUIRE_GPIOLIB
  255. select GENERIC_TIME
  256. select GENERIC_CLOCKEVENTS
  257. select GENERIC_GPIO
  258. select USB_ARCH_HAS_EHCI
  259. help
  260. Support for systems based on the Freescale 3xxx CPUs.
  261. config ARCH_NETX
  262. bool "Hilscher NetX based"
  263. select CPU_ARM926T
  264. select ARM_VIC
  265. select GENERIC_CLOCKEVENTS
  266. select GENERIC_TIME
  267. help
  268. This enables support for systems based on the Hilscher NetX Soc
  269. config ARCH_H720X
  270. bool "Hynix HMS720x-based"
  271. select CPU_ARM720T
  272. select ISA_DMA_API
  273. help
  274. This enables support for systems based on the Hynix HMS720x
  275. config ARCH_IOP13XX
  276. bool "IOP13xx-based"
  277. depends on MMU
  278. select CPU_XSC3
  279. select PLAT_IOP
  280. select PCI
  281. select ARCH_SUPPORTS_MSI
  282. select VMSPLIT_1G
  283. help
  284. Support for Intel's IOP13XX (XScale) family of processors.
  285. config ARCH_IOP32X
  286. bool "IOP32x-based"
  287. depends on MMU
  288. select CPU_XSCALE
  289. select PLAT_IOP
  290. select PCI
  291. select GENERIC_GPIO
  292. select ARCH_REQUIRE_GPIOLIB
  293. help
  294. Support for Intel's 80219 and IOP32X (XScale) family of
  295. processors.
  296. config ARCH_IOP33X
  297. bool "IOP33x-based"
  298. depends on MMU
  299. select CPU_XSCALE
  300. select PLAT_IOP
  301. select PCI
  302. select GENERIC_GPIO
  303. select ARCH_REQUIRE_GPIOLIB
  304. help
  305. Support for Intel's IOP33X (XScale) family of processors.
  306. config ARCH_IXP23XX
  307. bool "IXP23XX-based"
  308. depends on MMU
  309. select CPU_XSC3
  310. select PCI
  311. help
  312. Support for Intel's IXP23xx (XScale) family of processors.
  313. config ARCH_IXP2000
  314. bool "IXP2400/2800-based"
  315. depends on MMU
  316. select CPU_XSCALE
  317. select PCI
  318. help
  319. Support for Intel's IXP2400/2800 (XScale) family of processors.
  320. config ARCH_IXP4XX
  321. bool "IXP4xx-based"
  322. depends on MMU
  323. select CPU_XSCALE
  324. select GENERIC_GPIO
  325. select GENERIC_TIME
  326. select GENERIC_CLOCKEVENTS
  327. select DMABOUNCE if PCI
  328. help
  329. Support for Intel's IXP4XX (XScale) family of processors.
  330. config ARCH_L7200
  331. bool "LinkUp-L7200"
  332. select CPU_ARM720T
  333. select FIQ
  334. help
  335. Say Y here if you intend to run this kernel on a LinkUp Systems
  336. L7200 Software Development Board which uses an ARM720T processor.
  337. Information on this board can be obtained at:
  338. <http://www.linkupsys.com/>
  339. If you have any questions or comments about the Linux kernel port
  340. to this board, send e-mail to <sjhill@cotw.com>.
  341. config ARCH_KIRKWOOD
  342. bool "Marvell Kirkwood"
  343. select CPU_FEROCEON
  344. select PCI
  345. select GENERIC_GPIO
  346. select ARCH_REQUIRE_GPIOLIB
  347. select GENERIC_TIME
  348. select GENERIC_CLOCKEVENTS
  349. select PLAT_ORION
  350. help
  351. Support for the following Marvell Kirkwood series SoCs:
  352. 88F6180, 88F6192 and 88F6281.
  353. config ARCH_LOKI
  354. bool "Marvell Loki (88RC8480)"
  355. select CPU_FEROCEON
  356. select GENERIC_TIME
  357. select GENERIC_CLOCKEVENTS
  358. select PLAT_ORION
  359. help
  360. Support for the Marvell Loki (88RC8480) SoC.
  361. config ARCH_MV78XX0
  362. bool "Marvell MV78xx0"
  363. select CPU_FEROCEON
  364. select PCI
  365. select GENERIC_GPIO
  366. select ARCH_REQUIRE_GPIOLIB
  367. select GENERIC_TIME
  368. select GENERIC_CLOCKEVENTS
  369. select PLAT_ORION
  370. help
  371. Support for the following Marvell MV78xx0 series SoCs:
  372. MV781x0, MV782x0.
  373. config ARCH_ORION5X
  374. bool "Marvell Orion"
  375. depends on MMU
  376. select CPU_FEROCEON
  377. select PCI
  378. select GENERIC_GPIO
  379. select ARCH_REQUIRE_GPIOLIB
  380. select GENERIC_TIME
  381. select GENERIC_CLOCKEVENTS
  382. select PLAT_ORION
  383. help
  384. Support for the following Marvell Orion 5x series SoCs:
  385. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  386. Orion-2 (5281), Orion-1-90 (6183).
  387. config ARCH_MMP
  388. bool "Marvell PXA168/910"
  389. depends on MMU
  390. select GENERIC_GPIO
  391. select ARCH_REQUIRE_GPIOLIB
  392. select HAVE_CLK
  393. select COMMON_CLKDEV
  394. select GENERIC_TIME
  395. select GENERIC_CLOCKEVENTS
  396. select TICK_ONESHOT
  397. select PLAT_PXA
  398. help
  399. Support for Marvell's PXA168/910 processor line.
  400. config ARCH_KS8695
  401. bool "Micrel/Kendin KS8695"
  402. select CPU_ARM922T
  403. select GENERIC_GPIO
  404. select ARCH_REQUIRE_GPIOLIB
  405. help
  406. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  407. System-on-Chip devices.
  408. config ARCH_NS9XXX
  409. bool "NetSilicon NS9xxx"
  410. select CPU_ARM926T
  411. select GENERIC_GPIO
  412. select GENERIC_TIME
  413. select GENERIC_CLOCKEVENTS
  414. select HAVE_CLK
  415. help
  416. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  417. System.
  418. <http://www.digi.com/products/microprocessors/index.jsp>
  419. config ARCH_W90X900
  420. bool "Nuvoton W90X900 CPU"
  421. select CPU_ARM926T
  422. select ARCH_REQUIRE_GPIOLIB
  423. select GENERIC_GPIO
  424. select COMMON_CLKDEV
  425. help
  426. Support for Nuvoton (Winbond logic dept.) ARM9 processor,You
  427. can login www.mcuos.com or www.nuvoton.com to know more.
  428. config ARCH_PNX4008
  429. bool "Philips Nexperia PNX4008 Mobile"
  430. select CPU_ARM926T
  431. select HAVE_CLK
  432. help
  433. This enables support for Philips PNX4008 mobile platform.
  434. config ARCH_PXA
  435. bool "PXA2xx/PXA3xx-based"
  436. depends on MMU
  437. select ARCH_MTD_XIP
  438. select ARCH_HAS_CPUFREQ
  439. select GENERIC_GPIO
  440. select HAVE_CLK
  441. select COMMON_CLKDEV
  442. select ARCH_REQUIRE_GPIOLIB
  443. select GENERIC_TIME
  444. select GENERIC_CLOCKEVENTS
  445. select TICK_ONESHOT
  446. select PLAT_PXA
  447. help
  448. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  449. config ARCH_MSM
  450. bool "Qualcomm MSM"
  451. select CPU_V6
  452. select GENERIC_TIME
  453. select GENERIC_CLOCKEVENTS
  454. help
  455. Support for Qualcomm MSM7K based systems. This runs on the ARM11
  456. apps processor of the MSM7K and depends on a shared memory
  457. interface to the ARM9 modem processor which runs the baseband stack
  458. and controls some vital subsystems (clock and power control, etc).
  459. config ARCH_RPC
  460. bool "RiscPC"
  461. select ARCH_ACORN
  462. select FIQ
  463. select TIMER_ACORN
  464. select ARCH_MAY_HAVE_PC_FDC
  465. select HAVE_PATA_PLATFORM
  466. select ISA_DMA_API
  467. select NO_IOPORT
  468. select ARCH_SPARSEMEM_ENABLE
  469. help
  470. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  471. CD-ROM interface, serial and parallel port, and the floppy drive.
  472. config ARCH_SA1100
  473. bool "SA1100-based"
  474. select CPU_SA1100
  475. select ISA
  476. select ARCH_SPARSEMEM_ENABLE
  477. select ARCH_MTD_XIP
  478. select ARCH_HAS_CPUFREQ
  479. select GENERIC_GPIO
  480. select GENERIC_TIME
  481. select GENERIC_CLOCKEVENTS
  482. select HAVE_CLK
  483. select TICK_ONESHOT
  484. select ARCH_REQUIRE_GPIOLIB
  485. help
  486. Support for StrongARM 11x0 based boards.
  487. config ARCH_S3C2410
  488. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  489. select GENERIC_GPIO
  490. select ARCH_HAS_CPUFREQ
  491. select HAVE_CLK
  492. help
  493. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  494. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  495. the Samsung SMDK2410 development board (and derivatives).
  496. config ARCH_S3C64XX
  497. bool "Samsung S3C64XX"
  498. select GENERIC_GPIO
  499. select HAVE_CLK
  500. select ARCH_HAS_CPUFREQ
  501. help
  502. Samsung S3C64XX series based systems
  503. config ARCH_SHARK
  504. bool "Shark"
  505. select CPU_SA110
  506. select ISA
  507. select ISA_DMA
  508. select ZONE_DMA
  509. select PCI
  510. help
  511. Support for the StrongARM based Digital DNARD machine, also known
  512. as "Shark" (<http://www.shark-linux.de/shark.html>).
  513. config ARCH_LH7A40X
  514. bool "Sharp LH7A40X"
  515. select CPU_ARM922T
  516. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  517. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  518. help
  519. Say Y here for systems based on one of the Sharp LH7A40X
  520. System on a Chip processors. These CPUs include an ARM922T
  521. core with a wide array of integrated devices for
  522. hand-held and low-power applications.
  523. config ARCH_U300
  524. bool "ST-Ericsson U300 Series"
  525. depends on MMU
  526. select CPU_ARM926T
  527. select ARM_AMBA
  528. select ARM_VIC
  529. select GENERIC_TIME
  530. select GENERIC_CLOCKEVENTS
  531. select HAVE_CLK
  532. select COMMON_CLKDEV
  533. select GENERIC_GPIO
  534. help
  535. Support for ST-Ericsson U300 series mobile platforms.
  536. config ARCH_DAVINCI
  537. bool "TI DaVinci"
  538. select CPU_ARM926T
  539. select GENERIC_TIME
  540. select GENERIC_CLOCKEVENTS
  541. select GENERIC_GPIO
  542. select ARCH_REQUIRE_GPIOLIB
  543. select HAVE_CLK
  544. select ZONE_DMA
  545. select HAVE_IDE
  546. select COMMON_CLKDEV
  547. select GENERIC_ALLOCATOR
  548. help
  549. Support for TI's DaVinci platform.
  550. config ARCH_OMAP
  551. bool "TI OMAP"
  552. select GENERIC_GPIO
  553. select HAVE_CLK
  554. select ARCH_REQUIRE_GPIOLIB
  555. select ARCH_HAS_CPUFREQ
  556. select GENERIC_TIME
  557. select GENERIC_CLOCKEVENTS
  558. help
  559. Support for TI's OMAP platform (OMAP1 and OMAP2).
  560. endchoice
  561. source "arch/arm/mach-clps711x/Kconfig"
  562. source "arch/arm/mach-ep93xx/Kconfig"
  563. source "arch/arm/mach-footbridge/Kconfig"
  564. source "arch/arm/mach-gemini/Kconfig"
  565. source "arch/arm/mach-integrator/Kconfig"
  566. source "arch/arm/mach-iop32x/Kconfig"
  567. source "arch/arm/mach-iop33x/Kconfig"
  568. source "arch/arm/mach-iop13xx/Kconfig"
  569. source "arch/arm/mach-ixp4xx/Kconfig"
  570. source "arch/arm/mach-ixp2000/Kconfig"
  571. source "arch/arm/mach-ixp23xx/Kconfig"
  572. source "arch/arm/mach-loki/Kconfig"
  573. source "arch/arm/mach-mv78xx0/Kconfig"
  574. source "arch/arm/mach-pxa/Kconfig"
  575. source "arch/arm/plat-pxa/Kconfig"
  576. source "arch/arm/mach-mmp/Kconfig"
  577. source "arch/arm/mach-sa1100/Kconfig"
  578. source "arch/arm/plat-omap/Kconfig"
  579. source "arch/arm/mach-omap1/Kconfig"
  580. source "arch/arm/mach-omap2/Kconfig"
  581. source "arch/arm/mach-orion5x/Kconfig"
  582. source "arch/arm/mach-kirkwood/Kconfig"
  583. source "arch/arm/plat-s3c24xx/Kconfig"
  584. source "arch/arm/plat-s3c64xx/Kconfig"
  585. source "arch/arm/plat-s3c/Kconfig"
  586. if ARCH_S3C2410
  587. source "arch/arm/mach-s3c2400/Kconfig"
  588. source "arch/arm/mach-s3c2410/Kconfig"
  589. source "arch/arm/mach-s3c2412/Kconfig"
  590. source "arch/arm/mach-s3c2440/Kconfig"
  591. source "arch/arm/mach-s3c2442/Kconfig"
  592. source "arch/arm/mach-s3c2443/Kconfig"
  593. endif
  594. if ARCH_S3C64XX
  595. source "arch/arm/mach-s3c6400/Kconfig"
  596. source "arch/arm/mach-s3c6410/Kconfig"
  597. endif
  598. source "arch/arm/plat-stmp3xxx/Kconfig"
  599. source "arch/arm/mach-lh7a40x/Kconfig"
  600. source "arch/arm/mach-h720x/Kconfig"
  601. source "arch/arm/mach-versatile/Kconfig"
  602. source "arch/arm/mach-aaec2000/Kconfig"
  603. source "arch/arm/mach-realview/Kconfig"
  604. source "arch/arm/mach-at91/Kconfig"
  605. source "arch/arm/plat-mxc/Kconfig"
  606. source "arch/arm/mach-netx/Kconfig"
  607. source "arch/arm/mach-ns9xxx/Kconfig"
  608. source "arch/arm/mach-davinci/Kconfig"
  609. source "arch/arm/mach-ks8695/Kconfig"
  610. source "arch/arm/mach-msm/Kconfig"
  611. source "arch/arm/mach-u300/Kconfig"
  612. source "arch/arm/mach-w90x900/Kconfig"
  613. # Definitions to make life easier
  614. config ARCH_ACORN
  615. bool
  616. config PLAT_IOP
  617. bool
  618. config PLAT_ORION
  619. bool
  620. config PLAT_PXA
  621. bool
  622. source arch/arm/mm/Kconfig
  623. config IWMMXT
  624. bool "Enable iWMMXt support"
  625. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
  626. default y if PXA27x || PXA3xx || ARCH_MMP
  627. help
  628. Enable support for iWMMXt context switching at run time if
  629. running on a CPU that supports it.
  630. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  631. config XSCALE_PMU
  632. bool
  633. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  634. default y
  635. if !MMU
  636. source "arch/arm/Kconfig-nommu"
  637. endif
  638. config ARM_ERRATA_411920
  639. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  640. depends on CPU_V6 && !SMP
  641. help
  642. Invalidation of the Instruction Cache operation can
  643. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  644. It does not affect the MPCore. This option enables the ARM Ltd.
  645. recommended workaround.
  646. config ARM_ERRATA_430973
  647. bool "ARM errata: Stale prediction on replaced interworking branch"
  648. depends on CPU_V7
  649. help
  650. This option enables the workaround for the 430973 Cortex-A8
  651. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  652. interworking branch is replaced with another code sequence at the
  653. same virtual address, whether due to self-modifying code or virtual
  654. to physical address re-mapping, Cortex-A8 does not recover from the
  655. stale interworking branch prediction. This results in Cortex-A8
  656. executing the new code sequence in the incorrect ARM or Thumb state.
  657. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  658. and also flushes the branch target cache at every context switch.
  659. Note that setting specific bits in the ACTLR register may not be
  660. available in non-secure mode.
  661. config ARM_ERRATA_458693
  662. bool "ARM errata: Processor deadlock when a false hazard is created"
  663. depends on CPU_V7
  664. help
  665. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  666. erratum. For very specific sequences of memory operations, it is
  667. possible for a hazard condition intended for a cache line to instead
  668. be incorrectly associated with a different cache line. This false
  669. hazard might then cause a processor deadlock. The workaround enables
  670. the L1 caching of the NEON accesses and disables the PLD instruction
  671. in the ACTLR register. Note that setting specific bits in the ACTLR
  672. register may not be available in non-secure mode.
  673. config ARM_ERRATA_460075
  674. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  675. depends on CPU_V7
  676. help
  677. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  678. erratum. Any asynchronous access to the L2 cache may encounter a
  679. situation in which recent store transactions to the L2 cache are lost
  680. and overwritten with stale memory contents from external memory. The
  681. workaround disables the write-allocate mode for the L2 cache via the
  682. ACTLR register. Note that setting specific bits in the ACTLR register
  683. may not be available in non-secure mode.
  684. endmenu
  685. source "arch/arm/common/Kconfig"
  686. config FORCE_MAX_ZONEORDER
  687. int
  688. depends on SA1111
  689. default "9"
  690. menu "Bus support"
  691. config ARM_AMBA
  692. bool
  693. config ISA
  694. bool
  695. help
  696. Find out whether you have ISA slots on your motherboard. ISA is the
  697. name of a bus system, i.e. the way the CPU talks to the other stuff
  698. inside your box. Other bus systems are PCI, EISA, MicroChannel
  699. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  700. newer boards don't support it. If you have ISA, say Y, otherwise N.
  701. # Select ISA DMA controller support
  702. config ISA_DMA
  703. bool
  704. select ISA_DMA_API
  705. # Select ISA DMA interface
  706. config ISA_DMA_API
  707. bool
  708. config PCI
  709. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  710. help
  711. Find out whether you have a PCI motherboard. PCI is the name of a
  712. bus system, i.e. the way the CPU talks to the other stuff inside
  713. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  714. VESA. If you have PCI, say Y, otherwise N.
  715. config PCI_SYSCALL
  716. def_bool PCI
  717. # Select the host bridge type
  718. config PCI_HOST_VIA82C505
  719. bool
  720. depends on PCI && ARCH_SHARK
  721. default y
  722. config PCI_HOST_ITE8152
  723. bool
  724. depends on PCI && MACH_ARMCORE
  725. default y
  726. select DMABOUNCE
  727. source "drivers/pci/Kconfig"
  728. source "drivers/pcmcia/Kconfig"
  729. endmenu
  730. menu "Kernel Features"
  731. source "kernel/time/Kconfig"
  732. config SMP
  733. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  734. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
  735. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
  736. depends on GENERIC_CLOCKEVENTS
  737. select USE_GENERIC_SMP_HELPERS
  738. select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4)
  739. help
  740. This enables support for systems with more than one CPU. If you have
  741. a system with only one CPU, like most personal computers, say N. If
  742. you have a system with more than one CPU, say Y.
  743. If you say N here, the kernel will run on single and multiprocessor
  744. machines, but will use only one CPU of a multiprocessor machine. If
  745. you say Y here, the kernel will run on many, but not all, single
  746. processor machines. On a single processor machine, the kernel will
  747. run faster if you say N here.
  748. See also <file:Documentation/i386/IO-APIC.txt>,
  749. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  750. <http://www.linuxdoc.org/docs.html#howto>.
  751. If you don't know what to do here, say N.
  752. config HAVE_ARM_SCU
  753. bool
  754. depends on SMP
  755. help
  756. This option enables support for the ARM system coherency unit
  757. config HAVE_ARM_TWD
  758. bool
  759. depends on SMP
  760. help
  761. This options enables support for the ARM timer and watchdog unit
  762. choice
  763. prompt "Memory split"
  764. default VMSPLIT_3G
  765. help
  766. Select the desired split between kernel and user memory.
  767. If you are not absolutely sure what you are doing, leave this
  768. option alone!
  769. config VMSPLIT_3G
  770. bool "3G/1G user/kernel split"
  771. config VMSPLIT_2G
  772. bool "2G/2G user/kernel split"
  773. config VMSPLIT_1G
  774. bool "1G/3G user/kernel split"
  775. endchoice
  776. config PAGE_OFFSET
  777. hex
  778. default 0x40000000 if VMSPLIT_1G
  779. default 0x80000000 if VMSPLIT_2G
  780. default 0xC0000000
  781. config NR_CPUS
  782. int "Maximum number of CPUs (2-32)"
  783. range 2 32
  784. depends on SMP
  785. default "4"
  786. config HOTPLUG_CPU
  787. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  788. depends on SMP && HOTPLUG && EXPERIMENTAL
  789. help
  790. Say Y here to experiment with turning CPUs off and on. CPUs
  791. can be controlled through /sys/devices/system/cpu.
  792. config LOCAL_TIMERS
  793. bool "Use local timer interrupts"
  794. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
  795. REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
  796. default y
  797. select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4)
  798. help
  799. Enable support for local timers on SMP platforms, rather then the
  800. legacy IPI broadcast method. Local timers allows the system
  801. accounting to be spread across the timer interval, preventing a
  802. "thundering herd" at every timer tick.
  803. config PREEMPT
  804. bool "Preemptible Kernel (EXPERIMENTAL)"
  805. depends on EXPERIMENTAL
  806. help
  807. This option reduces the latency of the kernel when reacting to
  808. real-time or interactive events by allowing a low priority process to
  809. be preempted even if it is in kernel mode executing a system call.
  810. This allows applications to run more reliably even when the system is
  811. under load.
  812. Say Y here if you are building a kernel for a desktop, embedded
  813. or real-time system. Say N if you are unsure.
  814. config HZ
  815. int
  816. default 128 if ARCH_L7200
  817. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  818. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  819. default AT91_TIMER_HZ if ARCH_AT91
  820. default 100
  821. config AEABI
  822. bool "Use the ARM EABI to compile the kernel"
  823. help
  824. This option allows for the kernel to be compiled using the latest
  825. ARM ABI (aka EABI). This is only useful if you are using a user
  826. space environment that is also compiled with EABI.
  827. Since there are major incompatibilities between the legacy ABI and
  828. EABI, especially with regard to structure member alignment, this
  829. option also changes the kernel syscall calling convention to
  830. disambiguate both ABIs and allow for backward compatibility support
  831. (selected with CONFIG_OABI_COMPAT).
  832. To use this you need GCC version 4.0.0 or later.
  833. config OABI_COMPAT
  834. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  835. depends on AEABI && EXPERIMENTAL
  836. default y
  837. help
  838. This option preserves the old syscall interface along with the
  839. new (ARM EABI) one. It also provides a compatibility layer to
  840. intercept syscalls that have structure arguments which layout
  841. in memory differs between the legacy ABI and the new ARM EABI
  842. (only for non "thumb" binaries). This option adds a tiny
  843. overhead to all syscalls and produces a slightly larger kernel.
  844. If you know you'll be using only pure EABI user space then you
  845. can say N here. If this option is not selected and you attempt
  846. to execute a legacy ABI binary then the result will be
  847. UNPREDICTABLE (in fact it can be predicted that it won't work
  848. at all). If in doubt say Y.
  849. config ARCH_HAS_HOLES_MEMORYMODEL
  850. bool
  851. # Discontigmem is deprecated
  852. config ARCH_DISCONTIGMEM_ENABLE
  853. bool
  854. config ARCH_SPARSEMEM_ENABLE
  855. bool
  856. config ARCH_SPARSEMEM_DEFAULT
  857. def_bool ARCH_SPARSEMEM_ENABLE
  858. config ARCH_SELECT_MEMORY_MODEL
  859. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  860. config NODES_SHIFT
  861. int
  862. default "4" if ARCH_LH7A40X
  863. default "2"
  864. depends on NEED_MULTIPLE_NODES
  865. config HIGHMEM
  866. bool "High Memory Support (EXPERIMENTAL)"
  867. depends on MMU && EXPERIMENTAL
  868. help
  869. The address space of ARM processors is only 4 Gigabytes large
  870. and it has to accommodate user address space, kernel address
  871. space as well as some memory mapped IO. That means that, if you
  872. have a large amount of physical memory and/or IO, not all of the
  873. memory can be "permanently mapped" by the kernel. The physical
  874. memory that is not permanently mapped is called "high memory".
  875. Depending on the selected kernel/user memory split, minimum
  876. vmalloc space and actual amount of RAM, you may not need this
  877. option which should result in a slightly faster kernel.
  878. If unsure, say n.
  879. source "mm/Kconfig"
  880. config LEDS
  881. bool "Timer and CPU usage LEDs"
  882. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  883. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  884. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  885. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  886. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  887. ARCH_AT91 || ARCH_DAVINCI || \
  888. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  889. help
  890. If you say Y here, the LEDs on your machine will be used
  891. to provide useful information about your current system status.
  892. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  893. be able to select which LEDs are active using the options below. If
  894. you are compiling a kernel for the EBSA-110 or the LART however, the
  895. red LED will simply flash regularly to indicate that the system is
  896. still functional. It is safe to say Y here if you have a CATS
  897. system, but the driver will do nothing.
  898. config LEDS_TIMER
  899. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  900. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  901. || MACH_OMAP_PERSEUS2
  902. depends on LEDS
  903. depends on !GENERIC_CLOCKEVENTS
  904. default y if ARCH_EBSA110
  905. help
  906. If you say Y here, one of the system LEDs (the green one on the
  907. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  908. will flash regularly to indicate that the system is still
  909. operational. This is mainly useful to kernel hackers who are
  910. debugging unstable kernels.
  911. The LART uses the same LED for both Timer LED and CPU usage LED
  912. functions. You may choose to use both, but the Timer LED function
  913. will overrule the CPU usage LED.
  914. config LEDS_CPU
  915. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  916. !ARCH_OMAP) \
  917. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  918. || MACH_OMAP_PERSEUS2
  919. depends on LEDS
  920. help
  921. If you say Y here, the red LED will be used to give a good real
  922. time indication of CPU usage, by lighting whenever the idle task
  923. is not currently executing.
  924. The LART uses the same LED for both Timer LED and CPU usage LED
  925. functions. You may choose to use both, but the Timer LED function
  926. will overrule the CPU usage LED.
  927. config ALIGNMENT_TRAP
  928. bool
  929. depends on CPU_CP15_MMU
  930. default y if !ARCH_EBSA110
  931. help
  932. ARM processors cannot fetch/store information which is not
  933. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  934. address divisible by 4. On 32-bit ARM processors, these non-aligned
  935. fetch/store instructions will be emulated in software if you say
  936. here, which has a severe performance impact. This is necessary for
  937. correct operation of some network protocols. With an IP-only
  938. configuration it is safe to say N, otherwise say Y.
  939. config UACCESS_WITH_MEMCPY
  940. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  941. depends on MMU && EXPERIMENTAL
  942. default y if CPU_FEROCEON
  943. help
  944. Implement faster copy_to_user and clear_user methods for CPU
  945. cores where a 8-word STM instruction give significantly higher
  946. memory write throughput than a sequence of individual 32bit stores.
  947. A possible side effect is a slight increase in scheduling latency
  948. between threads sharing the same address space if they invoke
  949. such copy operations with large buffers.
  950. However, if the CPU data cache is using a write-allocate mode,
  951. this option is unlikely to provide any performance gain.
  952. endmenu
  953. menu "Boot options"
  954. # Compressed boot loader in ROM. Yes, we really want to ask about
  955. # TEXT and BSS so we preserve their values in the config files.
  956. config ZBOOT_ROM_TEXT
  957. hex "Compressed ROM boot loader base address"
  958. default "0"
  959. help
  960. The physical address at which the ROM-able zImage is to be
  961. placed in the target. Platforms which normally make use of
  962. ROM-able zImage formats normally set this to a suitable
  963. value in their defconfig file.
  964. If ZBOOT_ROM is not enabled, this has no effect.
  965. config ZBOOT_ROM_BSS
  966. hex "Compressed ROM boot loader BSS address"
  967. default "0"
  968. help
  969. The base address of an area of read/write memory in the target
  970. for the ROM-able zImage which must be available while the
  971. decompressor is running. It must be large enough to hold the
  972. entire decompressed kernel plus an additional 128 KiB.
  973. Platforms which normally make use of ROM-able zImage formats
  974. normally set this to a suitable value in their defconfig file.
  975. If ZBOOT_ROM is not enabled, this has no effect.
  976. config ZBOOT_ROM
  977. bool "Compressed boot loader in ROM/flash"
  978. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  979. help
  980. Say Y here if you intend to execute your compressed kernel image
  981. (zImage) directly from ROM or flash. If unsure, say N.
  982. config CMDLINE
  983. string "Default kernel command string"
  984. default ""
  985. help
  986. On some architectures (EBSA110 and CATS), there is currently no way
  987. for the boot loader to pass arguments to the kernel. For these
  988. architectures, you should supply some command-line options at build
  989. time by entering them here. As a minimum, you should specify the
  990. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  991. config XIP_KERNEL
  992. bool "Kernel Execute-In-Place from ROM"
  993. depends on !ZBOOT_ROM
  994. help
  995. Execute-In-Place allows the kernel to run from non-volatile storage
  996. directly addressable by the CPU, such as NOR flash. This saves RAM
  997. space since the text section of the kernel is not loaded from flash
  998. to RAM. Read-write sections, such as the data section and stack,
  999. are still copied to RAM. The XIP kernel is not compressed since
  1000. it has to run directly from flash, so it will take more space to
  1001. store it. The flash address used to link the kernel object files,
  1002. and for storing it, is configuration dependent. Therefore, if you
  1003. say Y here, you must know the proper physical address where to
  1004. store the kernel image depending on your own flash memory usage.
  1005. Also note that the make target becomes "make xipImage" rather than
  1006. "make zImage" or "make Image". The final kernel binary to put in
  1007. ROM memory will be arch/arm/boot/xipImage.
  1008. If unsure, say N.
  1009. config XIP_PHYS_ADDR
  1010. hex "XIP Kernel Physical Location"
  1011. depends on XIP_KERNEL
  1012. default "0x00080000"
  1013. help
  1014. This is the physical address in your flash memory the kernel will
  1015. be linked for and stored to. This address is dependent on your
  1016. own flash usage.
  1017. config KEXEC
  1018. bool "Kexec system call (EXPERIMENTAL)"
  1019. depends on EXPERIMENTAL
  1020. help
  1021. kexec is a system call that implements the ability to shutdown your
  1022. current kernel, and to start another kernel. It is like a reboot
  1023. but it is independent of the system firmware. And like a reboot
  1024. you can start any kernel with it, not just Linux.
  1025. It is an ongoing process to be certain the hardware in a machine
  1026. is properly shutdown, so do not be surprised if this code does not
  1027. initially work for you. It may help to enable device hotplugging
  1028. support.
  1029. config ATAGS_PROC
  1030. bool "Export atags in procfs"
  1031. depends on KEXEC
  1032. default y
  1033. help
  1034. Should the atags used to boot the kernel be exported in an "atags"
  1035. file in procfs. Useful with kexec.
  1036. endmenu
  1037. menu "CPU Power Management"
  1038. if ARCH_HAS_CPUFREQ
  1039. source "drivers/cpufreq/Kconfig"
  1040. config CPU_FREQ_SA1100
  1041. bool
  1042. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  1043. default y
  1044. config CPU_FREQ_SA1110
  1045. bool
  1046. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  1047. default y
  1048. config CPU_FREQ_INTEGRATOR
  1049. tristate "CPUfreq driver for ARM Integrator CPUs"
  1050. depends on ARCH_INTEGRATOR && CPU_FREQ
  1051. default y
  1052. help
  1053. This enables the CPUfreq driver for ARM Integrator CPUs.
  1054. For details, take a look at <file:Documentation/cpu-freq>.
  1055. If in doubt, say Y.
  1056. config CPU_FREQ_PXA
  1057. bool
  1058. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1059. default y
  1060. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1061. config CPU_FREQ_S3C64XX
  1062. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1063. depends on CPU_FREQ && CPU_S3C6410
  1064. config CPU_FREQ_S3C
  1065. bool
  1066. help
  1067. Internal configuration node for common cpufreq on Samsung SoC
  1068. config CPU_FREQ_S3C24XX
  1069. bool "CPUfreq driver for Samsung S3C24XX series CPUs"
  1070. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1071. select CPU_FREQ_S3C
  1072. help
  1073. This enables the CPUfreq driver for the Samsung S3C24XX family
  1074. of CPUs.
  1075. For details, take a look at <file:Documentation/cpu-freq>.
  1076. If in doubt, say N.
  1077. config CPU_FREQ_S3C24XX_PLL
  1078. bool "Support CPUfreq changing of PLL frequency"
  1079. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1080. help
  1081. Compile in support for changing the PLL frequency from the
  1082. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1083. after a frequency change, so by default it is not enabled.
  1084. This also means that the PLL tables for the selected CPU(s) will
  1085. be built which may increase the size of the kernel image.
  1086. config CPU_FREQ_S3C24XX_DEBUG
  1087. bool "Debug CPUfreq Samsung driver core"
  1088. depends on CPU_FREQ_S3C24XX
  1089. help
  1090. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1091. config CPU_FREQ_S3C24XX_IODEBUG
  1092. bool "Debug CPUfreq Samsung driver IO timing"
  1093. depends on CPU_FREQ_S3C24XX
  1094. help
  1095. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1096. config CPU_FREQ_S3C24XX_DEBUGFS
  1097. bool "Export debugfs for CPUFreq"
  1098. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1099. help
  1100. Export status information via debugfs.
  1101. endif
  1102. source "drivers/cpuidle/Kconfig"
  1103. endmenu
  1104. menu "Floating point emulation"
  1105. comment "At least one emulation must be selected"
  1106. config FPE_NWFPE
  1107. bool "NWFPE math emulation"
  1108. depends on !AEABI || OABI_COMPAT
  1109. ---help---
  1110. Say Y to include the NWFPE floating point emulator in the kernel.
  1111. This is necessary to run most binaries. Linux does not currently
  1112. support floating point hardware so you need to say Y here even if
  1113. your machine has an FPA or floating point co-processor podule.
  1114. You may say N here if you are going to load the Acorn FPEmulator
  1115. early in the bootup.
  1116. config FPE_NWFPE_XP
  1117. bool "Support extended precision"
  1118. depends on FPE_NWFPE
  1119. help
  1120. Say Y to include 80-bit support in the kernel floating-point
  1121. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1122. Note that gcc does not generate 80-bit operations by default,
  1123. so in most cases this option only enlarges the size of the
  1124. floating point emulator without any good reason.
  1125. You almost surely want to say N here.
  1126. config FPE_FASTFPE
  1127. bool "FastFPE math emulation (EXPERIMENTAL)"
  1128. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1129. ---help---
  1130. Say Y here to include the FAST floating point emulator in the kernel.
  1131. This is an experimental much faster emulator which now also has full
  1132. precision for the mantissa. It does not support any exceptions.
  1133. It is very simple, and approximately 3-6 times faster than NWFPE.
  1134. It should be sufficient for most programs. It may be not suitable
  1135. for scientific calculations, but you have to check this for yourself.
  1136. If you do not feel you need a faster FP emulation you should better
  1137. choose NWFPE.
  1138. config VFP
  1139. bool "VFP-format floating point maths"
  1140. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1141. help
  1142. Say Y to include VFP support code in the kernel. This is needed
  1143. if your hardware includes a VFP unit.
  1144. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1145. release notes and additional status information.
  1146. Say N if your target does not have VFP hardware.
  1147. config VFPv3
  1148. bool
  1149. depends on VFP
  1150. default y if CPU_V7
  1151. config NEON
  1152. bool "Advanced SIMD (NEON) Extension support"
  1153. depends on VFPv3 && CPU_V7
  1154. help
  1155. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1156. Extension.
  1157. endmenu
  1158. menu "Userspace binary formats"
  1159. source "fs/Kconfig.binfmt"
  1160. config ARTHUR
  1161. tristate "RISC OS personality"
  1162. depends on !AEABI
  1163. help
  1164. Say Y here to include the kernel code necessary if you want to run
  1165. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1166. experimental; if this sounds frightening, say N and sleep in peace.
  1167. You can also say M here to compile this support as a module (which
  1168. will be called arthur).
  1169. endmenu
  1170. menu "Power management options"
  1171. source "kernel/power/Kconfig"
  1172. config ARCH_SUSPEND_POSSIBLE
  1173. def_bool y
  1174. endmenu
  1175. source "net/Kconfig"
  1176. menu "Device Drivers"
  1177. source "drivers/base/Kconfig"
  1178. source "drivers/connector/Kconfig"
  1179. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  1180. source "drivers/mtd/Kconfig"
  1181. endif
  1182. source "drivers/parport/Kconfig"
  1183. source "drivers/pnp/Kconfig"
  1184. source "drivers/block/Kconfig"
  1185. # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
  1186. source "drivers/misc/Kconfig"
  1187. source "drivers/ide/Kconfig"
  1188. source "drivers/scsi/Kconfig"
  1189. source "drivers/ata/Kconfig"
  1190. source "drivers/md/Kconfig"
  1191. source "drivers/message/fusion/Kconfig"
  1192. source "drivers/ieee1394/Kconfig"
  1193. source "drivers/message/i2o/Kconfig"
  1194. source "drivers/net/Kconfig"
  1195. source "drivers/isdn/Kconfig"
  1196. # input before char - char/joystick depends on it. As does USB.
  1197. source "drivers/input/Kconfig"
  1198. source "drivers/char/Kconfig"
  1199. source "drivers/i2c/Kconfig"
  1200. source "drivers/spi/Kconfig"
  1201. source "drivers/gpio/Kconfig"
  1202. source "drivers/w1/Kconfig"
  1203. source "drivers/power/Kconfig"
  1204. source "drivers/hwmon/Kconfig"
  1205. source "drivers/thermal/Kconfig"
  1206. source "drivers/watchdog/Kconfig"
  1207. source "drivers/ssb/Kconfig"
  1208. #source "drivers/l3/Kconfig"
  1209. source "drivers/mfd/Kconfig"
  1210. source "drivers/media/Kconfig"
  1211. source "drivers/video/Kconfig"
  1212. source "sound/Kconfig"
  1213. source "drivers/hid/Kconfig"
  1214. source "drivers/usb/Kconfig"
  1215. source "drivers/uwb/Kconfig"
  1216. source "drivers/mmc/Kconfig"
  1217. source "drivers/memstick/Kconfig"
  1218. source "drivers/accessibility/Kconfig"
  1219. source "drivers/leds/Kconfig"
  1220. source "drivers/rtc/Kconfig"
  1221. source "drivers/dma/Kconfig"
  1222. source "drivers/dca/Kconfig"
  1223. source "drivers/auxdisplay/Kconfig"
  1224. source "drivers/regulator/Kconfig"
  1225. source "drivers/uio/Kconfig"
  1226. source "drivers/staging/Kconfig"
  1227. endmenu
  1228. source "fs/Kconfig"
  1229. source "arch/arm/Kconfig.debug"
  1230. source "security/Kconfig"
  1231. source "crypto/Kconfig"
  1232. source "lib/Kconfig"