Kconfig 34 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. 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 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 ARCH_REQUIRE_GPIOLIB
  193. select HAVE_CLK
  194. help
  195. This enables support for systems based on the Atmel AT91RM9200,
  196. AT91SAM9 and AT91CAP9 processors.
  197. config ARCH_CLPS711X
  198. bool "Cirrus Logic CLPS711x/EP721x-based"
  199. select CPU_ARM720T
  200. help
  201. Support for Cirrus Logic 711x/721x based boards.
  202. config ARCH_EBSA110
  203. bool "EBSA-110"
  204. select CPU_SA110
  205. select ISA
  206. select NO_IOPORT
  207. help
  208. This is an evaluation board for the StrongARM processor available
  209. from Digital. It has limited hardware on-board, including an
  210. Ethernet interface, two PCMCIA sockets, two serial ports and a
  211. parallel port.
  212. config ARCH_EP93XX
  213. bool "EP93xx-based"
  214. select CPU_ARM920T
  215. select ARM_AMBA
  216. select ARM_VIC
  217. select GENERIC_GPIO
  218. select HAVE_CLK
  219. select COMMON_CLKDEV
  220. select ARCH_REQUIRE_GPIOLIB
  221. help
  222. This enables support for the Cirrus EP93xx series of CPUs.
  223. config ARCH_GEMINI
  224. bool "Cortina Systems Gemini"
  225. select CPU_FA526
  226. select GENERIC_GPIO
  227. select ARCH_REQUIRE_GPIOLIB
  228. help
  229. Support for the Cortina Systems Gemini family SoCs
  230. config ARCH_FOOTBRIDGE
  231. bool "FootBridge"
  232. select CPU_SA110
  233. select FOOTBRIDGE
  234. help
  235. Support for systems based on the DC21285 companion chip
  236. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  237. config ARCH_NETX
  238. bool "Hilscher NetX based"
  239. select CPU_ARM926T
  240. select ARM_VIC
  241. select GENERIC_CLOCKEVENTS
  242. select GENERIC_TIME
  243. help
  244. This enables support for systems based on the Hilscher NetX Soc
  245. config ARCH_H720X
  246. bool "Hynix HMS720x-based"
  247. select CPU_ARM720T
  248. select ISA_DMA_API
  249. help
  250. This enables support for systems based on the Hynix HMS720x
  251. config ARCH_IMX
  252. bool "IMX"
  253. select CPU_ARM920T
  254. select GENERIC_GPIO
  255. select GENERIC_TIME
  256. select GENERIC_CLOCKEVENTS
  257. help
  258. Support for Motorola's i.MX family of processors (MX1, MXL).
  259. config ARCH_IOP13XX
  260. bool "IOP13xx-based"
  261. depends on MMU
  262. select CPU_XSC3
  263. select PLAT_IOP
  264. select PCI
  265. select ARCH_SUPPORTS_MSI
  266. select VMSPLIT_1G
  267. help
  268. Support for Intel's IOP13XX (XScale) family of processors.
  269. config ARCH_IOP32X
  270. bool "IOP32x-based"
  271. depends on MMU
  272. select CPU_XSCALE
  273. select PLAT_IOP
  274. select PCI
  275. select GENERIC_GPIO
  276. select ARCH_REQUIRE_GPIOLIB
  277. help
  278. Support for Intel's 80219 and IOP32X (XScale) family of
  279. processors.
  280. config ARCH_IOP33X
  281. bool "IOP33x-based"
  282. depends on MMU
  283. select CPU_XSCALE
  284. select PLAT_IOP
  285. select PCI
  286. select GENERIC_GPIO
  287. select ARCH_REQUIRE_GPIOLIB
  288. help
  289. Support for Intel's IOP33X (XScale) family of processors.
  290. config ARCH_IXP23XX
  291. bool "IXP23XX-based"
  292. depends on MMU
  293. select CPU_XSC3
  294. select PCI
  295. help
  296. Support for Intel's IXP23xx (XScale) family of processors.
  297. config ARCH_IXP2000
  298. bool "IXP2400/2800-based"
  299. depends on MMU
  300. select CPU_XSCALE
  301. select PCI
  302. help
  303. Support for Intel's IXP2400/2800 (XScale) family of processors.
  304. config ARCH_IXP4XX
  305. bool "IXP4xx-based"
  306. depends on MMU
  307. select CPU_XSCALE
  308. select GENERIC_GPIO
  309. select GENERIC_TIME
  310. select GENERIC_CLOCKEVENTS
  311. select DMABOUNCE if PCI
  312. help
  313. Support for Intel's IXP4XX (XScale) family of processors.
  314. config ARCH_L7200
  315. bool "LinkUp-L7200"
  316. select CPU_ARM720T
  317. select FIQ
  318. help
  319. Say Y here if you intend to run this kernel on a LinkUp Systems
  320. L7200 Software Development Board which uses an ARM720T processor.
  321. Information on this board can be obtained at:
  322. <http://www.linkupsys.com/>
  323. If you have any questions or comments about the Linux kernel port
  324. to this board, send e-mail to <sjhill@cotw.com>.
  325. config ARCH_KIRKWOOD
  326. bool "Marvell Kirkwood"
  327. select CPU_FEROCEON
  328. select PCI
  329. select GENERIC_GPIO
  330. select GENERIC_TIME
  331. select GENERIC_CLOCKEVENTS
  332. select PLAT_ORION
  333. help
  334. Support for the following Marvell Kirkwood series SoCs:
  335. 88F6180, 88F6192 and 88F6281.
  336. config ARCH_KS8695
  337. bool "Micrel/Kendin KS8695"
  338. select CPU_ARM922T
  339. select GENERIC_GPIO
  340. select ARCH_REQUIRE_GPIOLIB
  341. help
  342. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  343. System-on-Chip devices.
  344. config ARCH_NS9XXX
  345. bool "NetSilicon NS9xxx"
  346. select CPU_ARM926T
  347. select GENERIC_GPIO
  348. select GENERIC_TIME
  349. select GENERIC_CLOCKEVENTS
  350. select HAVE_CLK
  351. help
  352. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  353. System.
  354. <http://www.digi.com/products/microprocessors/index.jsp>
  355. config ARCH_LOKI
  356. bool "Marvell Loki (88RC8480)"
  357. select CPU_FEROCEON
  358. select GENERIC_TIME
  359. select GENERIC_CLOCKEVENTS
  360. select PLAT_ORION
  361. help
  362. Support for the Marvell Loki (88RC8480) SoC.
  363. config ARCH_MV78XX0
  364. bool "Marvell MV78xx0"
  365. select CPU_FEROCEON
  366. select PCI
  367. select GENERIC_GPIO
  368. select GENERIC_TIME
  369. select GENERIC_CLOCKEVENTS
  370. select PLAT_ORION
  371. help
  372. Support for the following Marvell MV78xx0 series SoCs:
  373. MV781x0, MV782x0.
  374. config ARCH_MXC
  375. bool "Freescale MXC/iMX-based"
  376. select GENERIC_TIME
  377. select GENERIC_CLOCKEVENTS
  378. select ARCH_MTD_XIP
  379. select GENERIC_GPIO
  380. select ARCH_REQUIRE_GPIOLIB
  381. help
  382. Support for Freescale MXC/iMX-based family of processors
  383. config ARCH_ORION5X
  384. bool "Marvell Orion"
  385. depends on MMU
  386. select CPU_FEROCEON
  387. select PCI
  388. select GENERIC_GPIO
  389. select GENERIC_TIME
  390. select GENERIC_CLOCKEVENTS
  391. select PLAT_ORION
  392. help
  393. Support for the following Marvell Orion 5x series SoCs:
  394. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  395. Orion-2 (5281), Orion-1-90 (6183).
  396. config ARCH_PNX4008
  397. bool "Philips Nexperia PNX4008 Mobile"
  398. select CPU_ARM926T
  399. select HAVE_CLK
  400. help
  401. This enables support for Philips PNX4008 mobile platform.
  402. config ARCH_PXA
  403. bool "PXA2xx/PXA3xx-based"
  404. depends on MMU
  405. select ARCH_MTD_XIP
  406. select GENERIC_GPIO
  407. select HAVE_CLK
  408. select COMMON_CLKDEV
  409. select ARCH_REQUIRE_GPIOLIB
  410. select GENERIC_TIME
  411. select GENERIC_CLOCKEVENTS
  412. select TICK_ONESHOT
  413. select PLAT_PXA
  414. help
  415. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  416. config ARCH_MMP
  417. bool "Marvell PXA168/910"
  418. depends on MMU
  419. select GENERIC_GPIO
  420. select ARCH_REQUIRE_GPIOLIB
  421. select HAVE_CLK
  422. select COMMON_CLKDEV
  423. select GENERIC_TIME
  424. select GENERIC_CLOCKEVENTS
  425. select TICK_ONESHOT
  426. select PLAT_PXA
  427. help
  428. Support for Marvell's PXA168/910 processor line.
  429. config ARCH_RPC
  430. bool "RiscPC"
  431. select ARCH_ACORN
  432. select FIQ
  433. select TIMER_ACORN
  434. select ARCH_MAY_HAVE_PC_FDC
  435. select HAVE_PATA_PLATFORM
  436. select ISA_DMA_API
  437. select NO_IOPORT
  438. select ARCH_SPARSEMEM_ENABLE
  439. help
  440. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  441. CD-ROM interface, serial and parallel port, and the floppy drive.
  442. config ARCH_SA1100
  443. bool "SA1100-based"
  444. select CPU_SA1100
  445. select ISA
  446. select ARCH_SPARSEMEM_ENABLE
  447. select ARCH_MTD_XIP
  448. select GENERIC_GPIO
  449. select GENERIC_TIME
  450. select GENERIC_CLOCKEVENTS
  451. select HAVE_CLK
  452. select TICK_ONESHOT
  453. select ARCH_REQUIRE_GPIOLIB
  454. help
  455. Support for StrongARM 11x0 based boards.
  456. config ARCH_S3C2410
  457. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  458. select GENERIC_GPIO
  459. select HAVE_CLK
  460. help
  461. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  462. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  463. the Samsung SMDK2410 development board (and derivatives).
  464. config ARCH_S3C64XX
  465. bool "Samsung S3C64XX"
  466. select GENERIC_GPIO
  467. select HAVE_CLK
  468. help
  469. Samsung S3C64XX series based systems
  470. config ARCH_SHARK
  471. bool "Shark"
  472. select CPU_SA110
  473. select ISA
  474. select ISA_DMA
  475. select ZONE_DMA
  476. select PCI
  477. help
  478. Support for the StrongARM based Digital DNARD machine, also known
  479. as "Shark" (<http://www.shark-linux.de/shark.html>).
  480. config ARCH_LH7A40X
  481. bool "Sharp LH7A40X"
  482. select CPU_ARM922T
  483. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  484. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  485. help
  486. Say Y here for systems based on one of the Sharp LH7A40X
  487. System on a Chip processors. These CPUs include an ARM922T
  488. core with a wide array of integrated devices for
  489. hand-held and low-power applications.
  490. config ARCH_DAVINCI
  491. bool "TI DaVinci"
  492. select CPU_ARM926T
  493. select GENERIC_TIME
  494. select GENERIC_CLOCKEVENTS
  495. select GENERIC_GPIO
  496. select ARCH_REQUIRE_GPIOLIB
  497. select HAVE_CLK
  498. select ZONE_DMA
  499. select HAVE_IDE
  500. select COMMON_CLKDEV
  501. help
  502. Support for TI's DaVinci platform.
  503. config ARCH_OMAP
  504. bool "TI OMAP"
  505. select GENERIC_GPIO
  506. select HAVE_CLK
  507. select ARCH_REQUIRE_GPIOLIB
  508. select GENERIC_TIME
  509. select GENERIC_CLOCKEVENTS
  510. help
  511. Support for TI's OMAP platform (OMAP1 and OMAP2).
  512. config ARCH_MSM
  513. bool "Qualcomm MSM"
  514. select CPU_V6
  515. select GENERIC_TIME
  516. select GENERIC_CLOCKEVENTS
  517. help
  518. Support for Qualcomm MSM7K based systems. This runs on the ARM11
  519. apps processor of the MSM7K and depends on a shared memory
  520. interface to the ARM9 modem processor which runs the baseband stack
  521. and controls some vital subsystems (clock and power control, etc).
  522. config ARCH_W90X900
  523. bool "Nuvoton W90X900 CPU"
  524. select CPU_ARM926T
  525. help
  526. Support for Nuvoton (Winbond logic dept.) ARM9 processor,You
  527. can login www.mcuos.com or www.nuvoton.com to know more.
  528. endchoice
  529. source "arch/arm/mach-clps711x/Kconfig"
  530. source "arch/arm/mach-ep93xx/Kconfig"
  531. source "arch/arm/mach-footbridge/Kconfig"
  532. source "arch/arm/mach-gemini/Kconfig"
  533. source "arch/arm/mach-integrator/Kconfig"
  534. source "arch/arm/mach-iop32x/Kconfig"
  535. source "arch/arm/mach-iop33x/Kconfig"
  536. source "arch/arm/mach-iop13xx/Kconfig"
  537. source "arch/arm/mach-ixp4xx/Kconfig"
  538. source "arch/arm/mach-ixp2000/Kconfig"
  539. source "arch/arm/mach-ixp23xx/Kconfig"
  540. source "arch/arm/mach-loki/Kconfig"
  541. source "arch/arm/mach-mv78xx0/Kconfig"
  542. source "arch/arm/mach-pxa/Kconfig"
  543. source "arch/arm/plat-pxa/Kconfig"
  544. source "arch/arm/mach-mmp/Kconfig"
  545. source "arch/arm/mach-sa1100/Kconfig"
  546. source "arch/arm/plat-omap/Kconfig"
  547. source "arch/arm/mach-omap1/Kconfig"
  548. source "arch/arm/mach-omap2/Kconfig"
  549. source "arch/arm/mach-orion5x/Kconfig"
  550. source "arch/arm/mach-kirkwood/Kconfig"
  551. source "arch/arm/plat-s3c24xx/Kconfig"
  552. source "arch/arm/plat-s3c64xx/Kconfig"
  553. source "arch/arm/plat-s3c/Kconfig"
  554. if ARCH_S3C2410
  555. source "arch/arm/mach-s3c2400/Kconfig"
  556. source "arch/arm/mach-s3c2410/Kconfig"
  557. source "arch/arm/mach-s3c2412/Kconfig"
  558. source "arch/arm/mach-s3c2440/Kconfig"
  559. source "arch/arm/mach-s3c2442/Kconfig"
  560. source "arch/arm/mach-s3c2443/Kconfig"
  561. endif
  562. if ARCH_S3C64XX
  563. source "arch/arm/mach-s3c6400/Kconfig"
  564. source "arch/arm/mach-s3c6410/Kconfig"
  565. endif
  566. source "arch/arm/mach-lh7a40x/Kconfig"
  567. source "arch/arm/mach-imx/Kconfig"
  568. source "arch/arm/mach-h720x/Kconfig"
  569. source "arch/arm/mach-versatile/Kconfig"
  570. source "arch/arm/mach-aaec2000/Kconfig"
  571. source "arch/arm/mach-realview/Kconfig"
  572. source "arch/arm/mach-at91/Kconfig"
  573. source "arch/arm/plat-mxc/Kconfig"
  574. source "arch/arm/mach-netx/Kconfig"
  575. source "arch/arm/mach-ns9xxx/Kconfig"
  576. source "arch/arm/mach-davinci/Kconfig"
  577. source "arch/arm/mach-ks8695/Kconfig"
  578. source "arch/arm/mach-msm/Kconfig"
  579. source "arch/arm/mach-w90x900/Kconfig"
  580. # Definitions to make life easier
  581. config ARCH_ACORN
  582. bool
  583. config PLAT_IOP
  584. bool
  585. config PLAT_ORION
  586. bool
  587. config PLAT_PXA
  588. bool
  589. source arch/arm/mm/Kconfig
  590. config IWMMXT
  591. bool "Enable iWMMXt support"
  592. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
  593. default y if PXA27x || PXA3xx || ARCH_MMP
  594. help
  595. Enable support for iWMMXt context switching at run time if
  596. running on a CPU that supports it.
  597. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  598. config XSCALE_PMU
  599. bool
  600. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  601. default y
  602. if !MMU
  603. source "arch/arm/Kconfig-nommu"
  604. endif
  605. config ARM_ERRATA_411920
  606. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  607. depends on CPU_V6 && !SMP
  608. help
  609. Invalidation of the Instruction Cache operation can
  610. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  611. It does not affect the MPCore. This option enables the ARM Ltd.
  612. recommended workaround.
  613. endmenu
  614. source "arch/arm/common/Kconfig"
  615. config FORCE_MAX_ZONEORDER
  616. int
  617. depends on SA1111
  618. default "9"
  619. menu "Bus support"
  620. config ARM_AMBA
  621. bool
  622. config ISA
  623. bool
  624. help
  625. Find out whether you have ISA slots on your motherboard. ISA is the
  626. name of a bus system, i.e. the way the CPU talks to the other stuff
  627. inside your box. Other bus systems are PCI, EISA, MicroChannel
  628. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  629. newer boards don't support it. If you have ISA, say Y, otherwise N.
  630. # Select ISA DMA controller support
  631. config ISA_DMA
  632. bool
  633. select ISA_DMA_API
  634. # Select ISA DMA interface
  635. config ISA_DMA_API
  636. bool
  637. config PCI
  638. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  639. help
  640. Find out whether you have a PCI motherboard. PCI is the name of a
  641. bus system, i.e. the way the CPU talks to the other stuff inside
  642. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  643. VESA. If you have PCI, say Y, otherwise N.
  644. config PCI_SYSCALL
  645. def_bool PCI
  646. # Select the host bridge type
  647. config PCI_HOST_VIA82C505
  648. bool
  649. depends on PCI && ARCH_SHARK
  650. default y
  651. config PCI_HOST_ITE8152
  652. bool
  653. depends on PCI && MACH_ARMCORE
  654. default y
  655. select DMABOUNCE
  656. source "drivers/pci/Kconfig"
  657. source "drivers/pcmcia/Kconfig"
  658. endmenu
  659. menu "Kernel Features"
  660. source "kernel/time/Kconfig"
  661. config SMP
  662. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  663. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
  664. select USE_GENERIC_SMP_HELPERS
  665. help
  666. This enables support for systems with more than one CPU. If you have
  667. a system with only one CPU, like most personal computers, say N. If
  668. you have a system with more than one CPU, say Y.
  669. If you say N here, the kernel will run on single and multiprocessor
  670. machines, but will use only one CPU of a multiprocessor machine. If
  671. you say Y here, the kernel will run on many, but not all, single
  672. processor machines. On a single processor machine, the kernel will
  673. run faster if you say N here.
  674. See also <file:Documentation/i386/IO-APIC.txt>,
  675. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  676. <http://www.linuxdoc.org/docs.html#howto>.
  677. If you don't know what to do here, say N.
  678. choice
  679. prompt "Memory split"
  680. default VMSPLIT_3G
  681. help
  682. Select the desired split between kernel and user memory.
  683. If you are not absolutely sure what you are doing, leave this
  684. option alone!
  685. config VMSPLIT_3G
  686. bool "3G/1G user/kernel split"
  687. config VMSPLIT_2G
  688. bool "2G/2G user/kernel split"
  689. config VMSPLIT_1G
  690. bool "1G/3G user/kernel split"
  691. endchoice
  692. config PAGE_OFFSET
  693. hex
  694. default 0x40000000 if VMSPLIT_1G
  695. default 0x80000000 if VMSPLIT_2G
  696. default 0xC0000000
  697. config NR_CPUS
  698. int "Maximum number of CPUs (2-32)"
  699. range 2 32
  700. depends on SMP
  701. default "4"
  702. config HOTPLUG_CPU
  703. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  704. depends on SMP && HOTPLUG && EXPERIMENTAL
  705. help
  706. Say Y here to experiment with turning CPUs off and on. CPUs
  707. can be controlled through /sys/devices/system/cpu.
  708. config LOCAL_TIMERS
  709. bool "Use local timer interrupts"
  710. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || REALVIEW_EB_A9MP)
  711. default y
  712. help
  713. Enable support for local timers on SMP platforms, rather then the
  714. legacy IPI broadcast method. Local timers allows the system
  715. accounting to be spread across the timer interval, preventing a
  716. "thundering herd" at every timer tick.
  717. config PREEMPT
  718. bool "Preemptible Kernel (EXPERIMENTAL)"
  719. depends on EXPERIMENTAL
  720. help
  721. This option reduces the latency of the kernel when reacting to
  722. real-time or interactive events by allowing a low priority process to
  723. be preempted even if it is in kernel mode executing a system call.
  724. This allows applications to run more reliably even when the system is
  725. under load.
  726. Say Y here if you are building a kernel for a desktop, embedded
  727. or real-time system. Say N if you are unsure.
  728. config HZ
  729. int
  730. default 128 if ARCH_L7200
  731. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  732. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  733. default AT91_TIMER_HZ if ARCH_AT91
  734. default 100
  735. config AEABI
  736. bool "Use the ARM EABI to compile the kernel"
  737. help
  738. This option allows for the kernel to be compiled using the latest
  739. ARM ABI (aka EABI). This is only useful if you are using a user
  740. space environment that is also compiled with EABI.
  741. Since there are major incompatibilities between the legacy ABI and
  742. EABI, especially with regard to structure member alignment, this
  743. option also changes the kernel syscall calling convention to
  744. disambiguate both ABIs and allow for backward compatibility support
  745. (selected with CONFIG_OABI_COMPAT).
  746. To use this you need GCC version 4.0.0 or later.
  747. config OABI_COMPAT
  748. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  749. depends on AEABI && EXPERIMENTAL
  750. default y
  751. help
  752. This option preserves the old syscall interface along with the
  753. new (ARM EABI) one. It also provides a compatibility layer to
  754. intercept syscalls that have structure arguments which layout
  755. in memory differs between the legacy ABI and the new ARM EABI
  756. (only for non "thumb" binaries). This option adds a tiny
  757. overhead to all syscalls and produces a slightly larger kernel.
  758. If you know you'll be using only pure EABI user space then you
  759. can say N here. If this option is not selected and you attempt
  760. to execute a legacy ABI binary then the result will be
  761. UNPREDICTABLE (in fact it can be predicted that it won't work
  762. at all). If in doubt say Y.
  763. config ARCH_FLATMEM_HAS_HOLES
  764. bool
  765. default y
  766. depends on FLATMEM
  767. # Discontigmem is deprecated
  768. config ARCH_DISCONTIGMEM_ENABLE
  769. bool
  770. config ARCH_SPARSEMEM_ENABLE
  771. bool
  772. config ARCH_SPARSEMEM_DEFAULT
  773. def_bool ARCH_SPARSEMEM_ENABLE
  774. config ARCH_SELECT_MEMORY_MODEL
  775. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  776. config NODES_SHIFT
  777. int
  778. default "4" if ARCH_LH7A40X
  779. default "2"
  780. depends on NEED_MULTIPLE_NODES
  781. config HIGHMEM
  782. bool "High Memory Support (EXPERIMENTAL)"
  783. depends on MMU && EXPERIMENTAL
  784. help
  785. The address space of ARM processors is only 4 Gigabytes large
  786. and it has to accommodate user address space, kernel address
  787. space as well as some memory mapped IO. That means that, if you
  788. have a large amount of physical memory and/or IO, not all of the
  789. memory can be "permanently mapped" by the kernel. The physical
  790. memory that is not permanently mapped is called "high memory".
  791. Depending on the selected kernel/user memory split, minimum
  792. vmalloc space and actual amount of RAM, you may not need this
  793. option which should result in a slightly faster kernel.
  794. If unsure, say n.
  795. source "mm/Kconfig"
  796. config LEDS
  797. bool "Timer and CPU usage LEDs"
  798. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  799. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  800. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  801. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  802. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  803. ARCH_AT91 || ARCH_DAVINCI || \
  804. ARCH_KS8695 || MACH_RD88F5182
  805. help
  806. If you say Y here, the LEDs on your machine will be used
  807. to provide useful information about your current system status.
  808. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  809. be able to select which LEDs are active using the options below. If
  810. you are compiling a kernel for the EBSA-110 or the LART however, the
  811. red LED will simply flash regularly to indicate that the system is
  812. still functional. It is safe to say Y here if you have a CATS
  813. system, but the driver will do nothing.
  814. config LEDS_TIMER
  815. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  816. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  817. || MACH_OMAP_PERSEUS2
  818. depends on LEDS
  819. depends on !GENERIC_CLOCKEVENTS
  820. default y if ARCH_EBSA110
  821. help
  822. If you say Y here, one of the system LEDs (the green one on the
  823. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  824. will flash regularly to indicate that the system is still
  825. operational. This is mainly useful to kernel hackers who are
  826. debugging unstable kernels.
  827. The LART uses the same LED for both Timer LED and CPU usage LED
  828. functions. You may choose to use both, but the Timer LED function
  829. will overrule the CPU usage LED.
  830. config LEDS_CPU
  831. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  832. !ARCH_OMAP) \
  833. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  834. || MACH_OMAP_PERSEUS2
  835. depends on LEDS
  836. help
  837. If you say Y here, the red LED will be used to give a good real
  838. time indication of CPU usage, by lighting whenever the idle task
  839. is not currently executing.
  840. The LART uses the same LED for both Timer LED and CPU usage LED
  841. functions. You may choose to use both, but the Timer LED function
  842. will overrule the CPU usage LED.
  843. config ALIGNMENT_TRAP
  844. bool
  845. depends on CPU_CP15_MMU
  846. default y if !ARCH_EBSA110
  847. help
  848. ARM processors cannot fetch/store information which is not
  849. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  850. address divisible by 4. On 32-bit ARM processors, these non-aligned
  851. fetch/store instructions will be emulated in software if you say
  852. here, which has a severe performance impact. This is necessary for
  853. correct operation of some network protocols. With an IP-only
  854. configuration it is safe to say N, otherwise say Y.
  855. endmenu
  856. menu "Boot options"
  857. # Compressed boot loader in ROM. Yes, we really want to ask about
  858. # TEXT and BSS so we preserve their values in the config files.
  859. config ZBOOT_ROM_TEXT
  860. hex "Compressed ROM boot loader base address"
  861. default "0"
  862. help
  863. The physical address at which the ROM-able zImage is to be
  864. placed in the target. Platforms which normally make use of
  865. ROM-able zImage formats normally set this to a suitable
  866. value in their defconfig file.
  867. If ZBOOT_ROM is not enabled, this has no effect.
  868. config ZBOOT_ROM_BSS
  869. hex "Compressed ROM boot loader BSS address"
  870. default "0"
  871. help
  872. The base address of an area of read/write memory in the target
  873. for the ROM-able zImage which must be available while the
  874. decompressor is running. It must be large enough to hold the
  875. entire decompressed kernel plus an additional 128 KiB.
  876. Platforms which normally make use of ROM-able zImage formats
  877. normally set this to a suitable value in their defconfig file.
  878. If ZBOOT_ROM is not enabled, this has no effect.
  879. config ZBOOT_ROM
  880. bool "Compressed boot loader in ROM/flash"
  881. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  882. help
  883. Say Y here if you intend to execute your compressed kernel image
  884. (zImage) directly from ROM or flash. If unsure, say N.
  885. config CMDLINE
  886. string "Default kernel command string"
  887. default ""
  888. help
  889. On some architectures (EBSA110 and CATS), there is currently no way
  890. for the boot loader to pass arguments to the kernel. For these
  891. architectures, you should supply some command-line options at build
  892. time by entering them here. As a minimum, you should specify the
  893. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  894. config XIP_KERNEL
  895. bool "Kernel Execute-In-Place from ROM"
  896. depends on !ZBOOT_ROM
  897. help
  898. Execute-In-Place allows the kernel to run from non-volatile storage
  899. directly addressable by the CPU, such as NOR flash. This saves RAM
  900. space since the text section of the kernel is not loaded from flash
  901. to RAM. Read-write sections, such as the data section and stack,
  902. are still copied to RAM. The XIP kernel is not compressed since
  903. it has to run directly from flash, so it will take more space to
  904. store it. The flash address used to link the kernel object files,
  905. and for storing it, is configuration dependent. Therefore, if you
  906. say Y here, you must know the proper physical address where to
  907. store the kernel image depending on your own flash memory usage.
  908. Also note that the make target becomes "make xipImage" rather than
  909. "make zImage" or "make Image". The final kernel binary to put in
  910. ROM memory will be arch/arm/boot/xipImage.
  911. If unsure, say N.
  912. config XIP_PHYS_ADDR
  913. hex "XIP Kernel Physical Location"
  914. depends on XIP_KERNEL
  915. default "0x00080000"
  916. help
  917. This is the physical address in your flash memory the kernel will
  918. be linked for and stored to. This address is dependent on your
  919. own flash usage.
  920. config KEXEC
  921. bool "Kexec system call (EXPERIMENTAL)"
  922. depends on EXPERIMENTAL
  923. help
  924. kexec is a system call that implements the ability to shutdown your
  925. current kernel, and to start another kernel. It is like a reboot
  926. but it is independent of the system firmware. And like a reboot
  927. you can start any kernel with it, not just Linux.
  928. It is an ongoing process to be certain the hardware in a machine
  929. is properly shutdown, so do not be surprised if this code does not
  930. initially work for you. It may help to enable device hotplugging
  931. support.
  932. config ATAGS_PROC
  933. bool "Export atags in procfs"
  934. depends on KEXEC
  935. default y
  936. help
  937. Should the atags used to boot the kernel be exported in an "atags"
  938. file in procfs. Useful with kexec.
  939. endmenu
  940. menu "CPU Power Management"
  941. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
  942. source "drivers/cpufreq/Kconfig"
  943. config CPU_FREQ_SA1100
  944. bool
  945. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  946. default y
  947. config CPU_FREQ_SA1110
  948. bool
  949. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  950. default y
  951. config CPU_FREQ_INTEGRATOR
  952. tristate "CPUfreq driver for ARM Integrator CPUs"
  953. depends on ARCH_INTEGRATOR && CPU_FREQ
  954. default y
  955. help
  956. This enables the CPUfreq driver for ARM Integrator CPUs.
  957. For details, take a look at <file:Documentation/cpu-freq>.
  958. If in doubt, say Y.
  959. config CPU_FREQ_IMX
  960. tristate "CPUfreq driver for i.MX CPUs"
  961. depends on ARCH_IMX && CPU_FREQ
  962. default n
  963. help
  964. This enables the CPUfreq driver for i.MX CPUs.
  965. If in doubt, say N.
  966. endif
  967. source "drivers/cpuidle/Kconfig"
  968. endmenu
  969. menu "Floating point emulation"
  970. comment "At least one emulation must be selected"
  971. config FPE_NWFPE
  972. bool "NWFPE math emulation"
  973. depends on !AEABI || OABI_COMPAT
  974. ---help---
  975. Say Y to include the NWFPE floating point emulator in the kernel.
  976. This is necessary to run most binaries. Linux does not currently
  977. support floating point hardware so you need to say Y here even if
  978. your machine has an FPA or floating point co-processor podule.
  979. You may say N here if you are going to load the Acorn FPEmulator
  980. early in the bootup.
  981. config FPE_NWFPE_XP
  982. bool "Support extended precision"
  983. depends on FPE_NWFPE
  984. help
  985. Say Y to include 80-bit support in the kernel floating-point
  986. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  987. Note that gcc does not generate 80-bit operations by default,
  988. so in most cases this option only enlarges the size of the
  989. floating point emulator without any good reason.
  990. You almost surely want to say N here.
  991. config FPE_FASTFPE
  992. bool "FastFPE math emulation (EXPERIMENTAL)"
  993. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  994. ---help---
  995. Say Y here to include the FAST floating point emulator in the kernel.
  996. This is an experimental much faster emulator which now also has full
  997. precision for the mantissa. It does not support any exceptions.
  998. It is very simple, and approximately 3-6 times faster than NWFPE.
  999. It should be sufficient for most programs. It may be not suitable
  1000. for scientific calculations, but you have to check this for yourself.
  1001. If you do not feel you need a faster FP emulation you should better
  1002. choose NWFPE.
  1003. config VFP
  1004. bool "VFP-format floating point maths"
  1005. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1006. help
  1007. Say Y to include VFP support code in the kernel. This is needed
  1008. if your hardware includes a VFP unit.
  1009. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1010. release notes and additional status information.
  1011. Say N if your target does not have VFP hardware.
  1012. config VFPv3
  1013. bool
  1014. depends on VFP
  1015. default y if CPU_V7
  1016. config NEON
  1017. bool "Advanced SIMD (NEON) Extension support"
  1018. depends on VFPv3 && CPU_V7
  1019. help
  1020. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1021. Extension.
  1022. endmenu
  1023. menu "Userspace binary formats"
  1024. source "fs/Kconfig.binfmt"
  1025. config ARTHUR
  1026. tristate "RISC OS personality"
  1027. depends on !AEABI
  1028. help
  1029. Say Y here to include the kernel code necessary if you want to run
  1030. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1031. experimental; if this sounds frightening, say N and sleep in peace.
  1032. You can also say M here to compile this support as a module (which
  1033. will be called arthur).
  1034. endmenu
  1035. menu "Power management options"
  1036. source "kernel/power/Kconfig"
  1037. config ARCH_SUSPEND_POSSIBLE
  1038. def_bool y
  1039. endmenu
  1040. source "net/Kconfig"
  1041. menu "Device Drivers"
  1042. source "drivers/base/Kconfig"
  1043. source "drivers/connector/Kconfig"
  1044. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  1045. source "drivers/mtd/Kconfig"
  1046. endif
  1047. source "drivers/parport/Kconfig"
  1048. source "drivers/pnp/Kconfig"
  1049. source "drivers/block/Kconfig"
  1050. # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
  1051. source "drivers/misc/Kconfig"
  1052. source "drivers/ide/Kconfig"
  1053. source "drivers/scsi/Kconfig"
  1054. source "drivers/ata/Kconfig"
  1055. source "drivers/md/Kconfig"
  1056. source "drivers/message/fusion/Kconfig"
  1057. source "drivers/ieee1394/Kconfig"
  1058. source "drivers/message/i2o/Kconfig"
  1059. source "drivers/net/Kconfig"
  1060. source "drivers/isdn/Kconfig"
  1061. # input before char - char/joystick depends on it. As does USB.
  1062. source "drivers/input/Kconfig"
  1063. source "drivers/char/Kconfig"
  1064. source "drivers/i2c/Kconfig"
  1065. source "drivers/spi/Kconfig"
  1066. source "drivers/gpio/Kconfig"
  1067. source "drivers/w1/Kconfig"
  1068. source "drivers/power/Kconfig"
  1069. source "drivers/hwmon/Kconfig"
  1070. source "drivers/thermal/Kconfig"
  1071. source "drivers/watchdog/Kconfig"
  1072. source "drivers/ssb/Kconfig"
  1073. #source "drivers/l3/Kconfig"
  1074. source "drivers/mfd/Kconfig"
  1075. source "drivers/media/Kconfig"
  1076. source "drivers/video/Kconfig"
  1077. source "sound/Kconfig"
  1078. source "drivers/hid/Kconfig"
  1079. source "drivers/usb/Kconfig"
  1080. source "drivers/uwb/Kconfig"
  1081. source "drivers/mmc/Kconfig"
  1082. source "drivers/memstick/Kconfig"
  1083. source "drivers/accessibility/Kconfig"
  1084. source "drivers/leds/Kconfig"
  1085. source "drivers/rtc/Kconfig"
  1086. source "drivers/dma/Kconfig"
  1087. source "drivers/dca/Kconfig"
  1088. source "drivers/auxdisplay/Kconfig"
  1089. source "drivers/regulator/Kconfig"
  1090. source "drivers/uio/Kconfig"
  1091. source "drivers/staging/Kconfig"
  1092. endmenu
  1093. source "fs/Kconfig"
  1094. source "arch/arm/Kconfig.debug"
  1095. source "security/Kconfig"
  1096. source "crypto/Kconfig"
  1097. source "lib/Kconfig"