Kconfig 33 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 HAVE_CLK
  193. help
  194. This enables support for systems based on the Atmel AT91RM9200,
  195. AT91SAM9 and AT91CAP9 processors.
  196. config ARCH_CLPS711X
  197. bool "Cirrus Logic CLPS711x/EP721x-based"
  198. select CPU_ARM720T
  199. help
  200. Support for Cirrus Logic 711x/721x based boards.
  201. config ARCH_EBSA110
  202. bool "EBSA-110"
  203. select CPU_SA110
  204. select ISA
  205. select NO_IOPORT
  206. help
  207. This is an evaluation board for the StrongARM processor available
  208. from Digital. It has limited hardware on-board, including an
  209. Ethernet interface, two PCMCIA sockets, two serial ports and a
  210. parallel port.
  211. config ARCH_EP93XX
  212. bool "EP93xx-based"
  213. select CPU_ARM920T
  214. select ARM_AMBA
  215. select ARM_VIC
  216. select GENERIC_GPIO
  217. select HAVE_CLK
  218. select COMMON_CLKDEV
  219. select ARCH_REQUIRE_GPIOLIB
  220. help
  221. This enables support for the Cirrus EP93xx series of CPUs.
  222. config ARCH_GEMINI
  223. bool "Cortina Systems Gemini"
  224. select CPU_FA526
  225. help
  226. Support for the Cortina Systems Gemini family SoCs
  227. config ARCH_FOOTBRIDGE
  228. bool "FootBridge"
  229. select CPU_SA110
  230. select FOOTBRIDGE
  231. help
  232. Support for systems based on the DC21285 companion chip
  233. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  234. config ARCH_NETX
  235. bool "Hilscher NetX based"
  236. select CPU_ARM926T
  237. select ARM_VIC
  238. select GENERIC_CLOCKEVENTS
  239. select GENERIC_TIME
  240. help
  241. This enables support for systems based on the Hilscher NetX Soc
  242. config ARCH_H720X
  243. bool "Hynix HMS720x-based"
  244. select CPU_ARM720T
  245. select ISA_DMA_API
  246. help
  247. This enables support for systems based on the Hynix HMS720x
  248. config ARCH_IMX
  249. bool "IMX"
  250. select CPU_ARM920T
  251. select GENERIC_GPIO
  252. select GENERIC_TIME
  253. select GENERIC_CLOCKEVENTS
  254. help
  255. Support for Motorola's i.MX family of processors (MX1, MXL).
  256. config ARCH_IOP13XX
  257. bool "IOP13xx-based"
  258. depends on MMU
  259. select CPU_XSC3
  260. select PLAT_IOP
  261. select PCI
  262. select ARCH_SUPPORTS_MSI
  263. select VMSPLIT_1G
  264. help
  265. Support for Intel's IOP13XX (XScale) family of processors.
  266. config ARCH_IOP32X
  267. bool "IOP32x-based"
  268. depends on MMU
  269. select CPU_XSCALE
  270. select PLAT_IOP
  271. select PCI
  272. select GENERIC_GPIO
  273. select ARCH_REQUIRE_GPIOLIB
  274. help
  275. Support for Intel's 80219 and IOP32X (XScale) family of
  276. processors.
  277. config ARCH_IOP33X
  278. bool "IOP33x-based"
  279. depends on MMU
  280. select CPU_XSCALE
  281. select PLAT_IOP
  282. select PCI
  283. select GENERIC_GPIO
  284. select ARCH_REQUIRE_GPIOLIB
  285. help
  286. Support for Intel's IOP33X (XScale) family of processors.
  287. config ARCH_IXP23XX
  288. bool "IXP23XX-based"
  289. depends on MMU
  290. select CPU_XSC3
  291. select PCI
  292. help
  293. Support for Intel's IXP23xx (XScale) family of processors.
  294. config ARCH_IXP2000
  295. bool "IXP2400/2800-based"
  296. depends on MMU
  297. select CPU_XSCALE
  298. select PCI
  299. help
  300. Support for Intel's IXP2400/2800 (XScale) family of processors.
  301. config ARCH_IXP4XX
  302. bool "IXP4xx-based"
  303. depends on MMU
  304. select CPU_XSCALE
  305. select GENERIC_GPIO
  306. select GENERIC_TIME
  307. select GENERIC_CLOCKEVENTS
  308. select DMABOUNCE if PCI
  309. help
  310. Support for Intel's IXP4XX (XScale) family of processors.
  311. config ARCH_L7200
  312. bool "LinkUp-L7200"
  313. select CPU_ARM720T
  314. select FIQ
  315. help
  316. Say Y here if you intend to run this kernel on a LinkUp Systems
  317. L7200 Software Development Board which uses an ARM720T processor.
  318. Information on this board can be obtained at:
  319. <http://www.linkupsys.com/>
  320. If you have any questions or comments about the Linux kernel port
  321. to this board, send e-mail to <sjhill@cotw.com>.
  322. config ARCH_KIRKWOOD
  323. bool "Marvell Kirkwood"
  324. select CPU_FEROCEON
  325. select PCI
  326. select GENERIC_GPIO
  327. select GENERIC_TIME
  328. select GENERIC_CLOCKEVENTS
  329. select PLAT_ORION
  330. help
  331. Support for the following Marvell Kirkwood series SoCs:
  332. 88F6180, 88F6192 and 88F6281.
  333. config ARCH_KS8695
  334. bool "Micrel/Kendin KS8695"
  335. select CPU_ARM922T
  336. select GENERIC_GPIO
  337. select ARCH_REQUIRE_GPIOLIB
  338. help
  339. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  340. System-on-Chip devices.
  341. config ARCH_NS9XXX
  342. bool "NetSilicon NS9xxx"
  343. select CPU_ARM926T
  344. select GENERIC_GPIO
  345. select GENERIC_TIME
  346. select GENERIC_CLOCKEVENTS
  347. select HAVE_CLK
  348. help
  349. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  350. System.
  351. <http://www.digi.com/products/microprocessors/index.jsp>
  352. config ARCH_LOKI
  353. bool "Marvell Loki (88RC8480)"
  354. select CPU_FEROCEON
  355. select GENERIC_TIME
  356. select GENERIC_CLOCKEVENTS
  357. select PLAT_ORION
  358. help
  359. Support for the Marvell Loki (88RC8480) SoC.
  360. config ARCH_MV78XX0
  361. bool "Marvell MV78xx0"
  362. select CPU_FEROCEON
  363. select PCI
  364. select GENERIC_GPIO
  365. select GENERIC_TIME
  366. select GENERIC_CLOCKEVENTS
  367. select PLAT_ORION
  368. help
  369. Support for the following Marvell MV78xx0 series SoCs:
  370. MV781x0, MV782x0.
  371. config ARCH_MXC
  372. bool "Freescale MXC/iMX-based"
  373. select GENERIC_TIME
  374. select GENERIC_CLOCKEVENTS
  375. select ARCH_MTD_XIP
  376. select GENERIC_GPIO
  377. select ARCH_REQUIRE_GPIOLIB
  378. help
  379. Support for Freescale MXC/iMX-based family of processors
  380. config ARCH_ORION5X
  381. bool "Marvell Orion"
  382. depends on MMU
  383. select CPU_FEROCEON
  384. select PCI
  385. select GENERIC_GPIO
  386. select GENERIC_TIME
  387. select GENERIC_CLOCKEVENTS
  388. select PLAT_ORION
  389. help
  390. Support for the following Marvell Orion 5x series SoCs:
  391. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  392. Orion-2 (5281), Orion-1-90 (6183).
  393. config ARCH_PNX4008
  394. bool "Philips Nexperia PNX4008 Mobile"
  395. select CPU_ARM926T
  396. select HAVE_CLK
  397. help
  398. This enables support for Philips PNX4008 mobile platform.
  399. config ARCH_PXA
  400. bool "PXA2xx/PXA3xx-based"
  401. depends on MMU
  402. select ARCH_MTD_XIP
  403. select GENERIC_GPIO
  404. select HAVE_CLK
  405. select COMMON_CLKDEV
  406. select ARCH_REQUIRE_GPIOLIB
  407. select GENERIC_TIME
  408. select GENERIC_CLOCKEVENTS
  409. select TICK_ONESHOT
  410. help
  411. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  412. config ARCH_RPC
  413. bool "RiscPC"
  414. select ARCH_ACORN
  415. select FIQ
  416. select TIMER_ACORN
  417. select ARCH_MAY_HAVE_PC_FDC
  418. select HAVE_PATA_PLATFORM
  419. select ISA_DMA_API
  420. select NO_IOPORT
  421. select ARCH_SPARSEMEM_ENABLE
  422. help
  423. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  424. CD-ROM interface, serial and parallel port, and the floppy drive.
  425. config ARCH_SA1100
  426. bool "SA1100-based"
  427. select CPU_SA1100
  428. select ISA
  429. select ARCH_SPARSEMEM_ENABLE
  430. select ARCH_MTD_XIP
  431. select GENERIC_GPIO
  432. select GENERIC_TIME
  433. select GENERIC_CLOCKEVENTS
  434. select HAVE_CLK
  435. select TICK_ONESHOT
  436. select ARCH_REQUIRE_GPIOLIB
  437. help
  438. Support for StrongARM 11x0 based boards.
  439. config ARCH_S3C2410
  440. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  441. select GENERIC_GPIO
  442. select HAVE_CLK
  443. help
  444. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  445. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  446. the Samsung SMDK2410 development board (and derivatives).
  447. config ARCH_S3C64XX
  448. bool "Samsung S3C64XX"
  449. select GENERIC_GPIO
  450. select HAVE_CLK
  451. help
  452. Samsung S3C64XX series based systems
  453. config ARCH_SHARK
  454. bool "Shark"
  455. select CPU_SA110
  456. select ISA
  457. select ISA_DMA
  458. select ZONE_DMA
  459. select PCI
  460. help
  461. Support for the StrongARM based Digital DNARD machine, also known
  462. as "Shark" (<http://www.shark-linux.de/shark.html>).
  463. config ARCH_LH7A40X
  464. bool "Sharp LH7A40X"
  465. select CPU_ARM922T
  466. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  467. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  468. help
  469. Say Y here for systems based on one of the Sharp LH7A40X
  470. System on a Chip processors. These CPUs include an ARM922T
  471. core with a wide array of integrated devices for
  472. hand-held and low-power applications.
  473. config ARCH_DAVINCI
  474. bool "TI DaVinci"
  475. select CPU_ARM926T
  476. select GENERIC_TIME
  477. select GENERIC_CLOCKEVENTS
  478. select GENERIC_GPIO
  479. select ARCH_REQUIRE_GPIOLIB
  480. select HAVE_CLK
  481. select ZONE_DMA
  482. help
  483. Support for TI's DaVinci platform.
  484. config ARCH_OMAP
  485. bool "TI OMAP"
  486. select GENERIC_GPIO
  487. select HAVE_CLK
  488. select ARCH_REQUIRE_GPIOLIB
  489. select GENERIC_TIME
  490. select GENERIC_CLOCKEVENTS
  491. help
  492. Support for TI's OMAP platform (OMAP1 and OMAP2).
  493. config ARCH_MSM
  494. bool "Qualcomm MSM"
  495. select CPU_V6
  496. select GENERIC_TIME
  497. select GENERIC_CLOCKEVENTS
  498. help
  499. Support for Qualcomm MSM7K based systems. This runs on the ARM11
  500. apps processor of the MSM7K and depends on a shared memory
  501. interface to the ARM9 modem processor which runs the baseband stack
  502. and controls some vital subsystems (clock and power control, etc).
  503. config ARCH_W90X900
  504. bool "Nuvoton W90X900 CPU"
  505. select CPU_ARM926T
  506. help
  507. Support for Nuvoton (Winbond logic dept.) ARM9 processor,You
  508. can login www.mcuos.com or www.nuvoton.com to know more.
  509. endchoice
  510. source "arch/arm/mach-clps711x/Kconfig"
  511. source "arch/arm/mach-ep93xx/Kconfig"
  512. source "arch/arm/mach-footbridge/Kconfig"
  513. source "arch/arm/mach-gemini/Kconfig"
  514. source "arch/arm/mach-integrator/Kconfig"
  515. source "arch/arm/mach-iop32x/Kconfig"
  516. source "arch/arm/mach-iop33x/Kconfig"
  517. source "arch/arm/mach-iop13xx/Kconfig"
  518. source "arch/arm/mach-ixp4xx/Kconfig"
  519. source "arch/arm/mach-ixp2000/Kconfig"
  520. source "arch/arm/mach-ixp23xx/Kconfig"
  521. source "arch/arm/mach-loki/Kconfig"
  522. source "arch/arm/mach-mv78xx0/Kconfig"
  523. source "arch/arm/mach-pxa/Kconfig"
  524. source "arch/arm/mach-sa1100/Kconfig"
  525. source "arch/arm/plat-omap/Kconfig"
  526. source "arch/arm/mach-omap1/Kconfig"
  527. source "arch/arm/mach-omap2/Kconfig"
  528. source "arch/arm/mach-orion5x/Kconfig"
  529. source "arch/arm/mach-kirkwood/Kconfig"
  530. source "arch/arm/plat-s3c24xx/Kconfig"
  531. source "arch/arm/plat-s3c64xx/Kconfig"
  532. source "arch/arm/plat-s3c/Kconfig"
  533. if ARCH_S3C2410
  534. source "arch/arm/mach-s3c2400/Kconfig"
  535. source "arch/arm/mach-s3c2410/Kconfig"
  536. source "arch/arm/mach-s3c2412/Kconfig"
  537. source "arch/arm/mach-s3c2440/Kconfig"
  538. source "arch/arm/mach-s3c2442/Kconfig"
  539. source "arch/arm/mach-s3c2443/Kconfig"
  540. endif
  541. if ARCH_S3C64XX
  542. source "arch/arm/mach-s3c6400/Kconfig"
  543. source "arch/arm/mach-s3c6410/Kconfig"
  544. endif
  545. source "arch/arm/mach-lh7a40x/Kconfig"
  546. source "arch/arm/mach-imx/Kconfig"
  547. source "arch/arm/mach-h720x/Kconfig"
  548. source "arch/arm/mach-versatile/Kconfig"
  549. source "arch/arm/mach-aaec2000/Kconfig"
  550. source "arch/arm/mach-realview/Kconfig"
  551. source "arch/arm/mach-at91/Kconfig"
  552. source "arch/arm/plat-mxc/Kconfig"
  553. source "arch/arm/mach-netx/Kconfig"
  554. source "arch/arm/mach-ns9xxx/Kconfig"
  555. source "arch/arm/mach-davinci/Kconfig"
  556. source "arch/arm/mach-ks8695/Kconfig"
  557. source "arch/arm/mach-msm/Kconfig"
  558. source "arch/arm/mach-w90x900/Kconfig"
  559. # Definitions to make life easier
  560. config ARCH_ACORN
  561. bool
  562. config PLAT_IOP
  563. bool
  564. config PLAT_ORION
  565. bool
  566. source arch/arm/mm/Kconfig
  567. config IWMMXT
  568. bool "Enable iWMMXt support"
  569. depends on CPU_XSCALE || CPU_XSC3
  570. default y if PXA27x || PXA3xx
  571. help
  572. Enable support for iWMMXt context switching at run time if
  573. running on a CPU that supports it.
  574. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  575. config XSCALE_PMU
  576. bool
  577. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  578. default y
  579. if !MMU
  580. source "arch/arm/Kconfig-nommu"
  581. endif
  582. endmenu
  583. source "arch/arm/common/Kconfig"
  584. config FORCE_MAX_ZONEORDER
  585. int
  586. depends on SA1111
  587. default "9"
  588. menu "Bus support"
  589. config ARM_AMBA
  590. bool
  591. config ISA
  592. bool
  593. help
  594. Find out whether you have ISA slots on your motherboard. ISA is the
  595. name of a bus system, i.e. the way the CPU talks to the other stuff
  596. inside your box. Other bus systems are PCI, EISA, MicroChannel
  597. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  598. newer boards don't support it. If you have ISA, say Y, otherwise N.
  599. # Select ISA DMA controller support
  600. config ISA_DMA
  601. bool
  602. select ISA_DMA_API
  603. # Select ISA DMA interface
  604. config ISA_DMA_API
  605. bool
  606. config PCI
  607. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  608. help
  609. Find out whether you have a PCI motherboard. PCI is the name of a
  610. bus system, i.e. the way the CPU talks to the other stuff inside
  611. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  612. VESA. If you have PCI, say Y, otherwise N.
  613. config PCI_SYSCALL
  614. def_bool PCI
  615. # Select the host bridge type
  616. config PCI_HOST_VIA82C505
  617. bool
  618. depends on PCI && ARCH_SHARK
  619. default y
  620. config PCI_HOST_ITE8152
  621. bool
  622. depends on PCI && MACH_ARMCORE
  623. default y
  624. select DMABOUNCE
  625. source "drivers/pci/Kconfig"
  626. source "drivers/pcmcia/Kconfig"
  627. endmenu
  628. menu "Kernel Features"
  629. source "kernel/time/Kconfig"
  630. config SMP
  631. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  632. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
  633. select USE_GENERIC_SMP_HELPERS
  634. help
  635. This enables support for systems with more than one CPU. If you have
  636. a system with only one CPU, like most personal computers, say N. If
  637. you have a system with more than one CPU, say Y.
  638. If you say N here, the kernel will run on single and multiprocessor
  639. machines, but will use only one CPU of a multiprocessor machine. If
  640. you say Y here, the kernel will run on many, but not all, single
  641. processor machines. On a single processor machine, the kernel will
  642. run faster if you say N here.
  643. See also <file:Documentation/i386/IO-APIC.txt>,
  644. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  645. <http://www.linuxdoc.org/docs.html#howto>.
  646. If you don't know what to do here, say N.
  647. choice
  648. prompt "Memory split"
  649. default VMSPLIT_3G
  650. help
  651. Select the desired split between kernel and user memory.
  652. If you are not absolutely sure what you are doing, leave this
  653. option alone!
  654. config VMSPLIT_3G
  655. bool "3G/1G user/kernel split"
  656. config VMSPLIT_2G
  657. bool "2G/2G user/kernel split"
  658. config VMSPLIT_1G
  659. bool "1G/3G user/kernel split"
  660. endchoice
  661. config PAGE_OFFSET
  662. hex
  663. default 0x40000000 if VMSPLIT_1G
  664. default 0x80000000 if VMSPLIT_2G
  665. default 0xC0000000
  666. config NR_CPUS
  667. int "Maximum number of CPUs (2-32)"
  668. range 2 32
  669. depends on SMP
  670. default "4"
  671. config HOTPLUG_CPU
  672. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  673. depends on SMP && HOTPLUG && EXPERIMENTAL
  674. help
  675. Say Y here to experiment with turning CPUs off and on. CPUs
  676. can be controlled through /sys/devices/system/cpu.
  677. config LOCAL_TIMERS
  678. bool "Use local timer interrupts"
  679. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || REALVIEW_EB_A9MP)
  680. default y
  681. help
  682. Enable support for local timers on SMP platforms, rather then the
  683. legacy IPI broadcast method. Local timers allows the system
  684. accounting to be spread across the timer interval, preventing a
  685. "thundering herd" at every timer tick.
  686. config PREEMPT
  687. bool "Preemptible Kernel (EXPERIMENTAL)"
  688. depends on EXPERIMENTAL
  689. help
  690. This option reduces the latency of the kernel when reacting to
  691. real-time or interactive events by allowing a low priority process to
  692. be preempted even if it is in kernel mode executing a system call.
  693. This allows applications to run more reliably even when the system is
  694. under load.
  695. Say Y here if you are building a kernel for a desktop, embedded
  696. or real-time system. Say N if you are unsure.
  697. config HZ
  698. int
  699. default 128 if ARCH_L7200
  700. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  701. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  702. default AT91_TIMER_HZ if ARCH_AT91
  703. default 100
  704. config AEABI
  705. bool "Use the ARM EABI to compile the kernel"
  706. help
  707. This option allows for the kernel to be compiled using the latest
  708. ARM ABI (aka EABI). This is only useful if you are using a user
  709. space environment that is also compiled with EABI.
  710. Since there are major incompatibilities between the legacy ABI and
  711. EABI, especially with regard to structure member alignment, this
  712. option also changes the kernel syscall calling convention to
  713. disambiguate both ABIs and allow for backward compatibility support
  714. (selected with CONFIG_OABI_COMPAT).
  715. To use this you need GCC version 4.0.0 or later.
  716. config OABI_COMPAT
  717. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  718. depends on AEABI && EXPERIMENTAL
  719. default y
  720. help
  721. This option preserves the old syscall interface along with the
  722. new (ARM EABI) one. It also provides a compatibility layer to
  723. intercept syscalls that have structure arguments which layout
  724. in memory differs between the legacy ABI and the new ARM EABI
  725. (only for non "thumb" binaries). This option adds a tiny
  726. overhead to all syscalls and produces a slightly larger kernel.
  727. If you know you'll be using only pure EABI user space then you
  728. can say N here. If this option is not selected and you attempt
  729. to execute a legacy ABI binary then the result will be
  730. UNPREDICTABLE (in fact it can be predicted that it won't work
  731. at all). If in doubt say Y.
  732. config ARCH_FLATMEM_HAS_HOLES
  733. bool
  734. default y
  735. depends on FLATMEM
  736. # Discontigmem is deprecated
  737. config ARCH_DISCONTIGMEM_ENABLE
  738. bool
  739. config ARCH_SPARSEMEM_ENABLE
  740. bool
  741. config ARCH_SPARSEMEM_DEFAULT
  742. def_bool ARCH_SPARSEMEM_ENABLE
  743. config ARCH_SELECT_MEMORY_MODEL
  744. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  745. config NODES_SHIFT
  746. int
  747. default "4" if ARCH_LH7A40X
  748. default "2"
  749. depends on NEED_MULTIPLE_NODES
  750. source "mm/Kconfig"
  751. config LEDS
  752. bool "Timer and CPU usage LEDs"
  753. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  754. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  755. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  756. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  757. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  758. ARCH_AT91 || ARCH_DAVINCI || \
  759. ARCH_KS8695 || MACH_RD88F5182
  760. help
  761. If you say Y here, the LEDs on your machine will be used
  762. to provide useful information about your current system status.
  763. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  764. be able to select which LEDs are active using the options below. If
  765. you are compiling a kernel for the EBSA-110 or the LART however, the
  766. red LED will simply flash regularly to indicate that the system is
  767. still functional. It is safe to say Y here if you have a CATS
  768. system, but the driver will do nothing.
  769. config LEDS_TIMER
  770. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  771. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  772. || MACH_OMAP_PERSEUS2
  773. depends on LEDS
  774. depends on !GENERIC_CLOCKEVENTS
  775. default y if ARCH_EBSA110
  776. help
  777. If you say Y here, one of the system LEDs (the green one on the
  778. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  779. will flash regularly to indicate that the system is still
  780. operational. This is mainly useful to kernel hackers who are
  781. debugging unstable kernels.
  782. The LART uses the same LED for both Timer LED and CPU usage LED
  783. functions. You may choose to use both, but the Timer LED function
  784. will overrule the CPU usage LED.
  785. config LEDS_CPU
  786. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  787. !ARCH_OMAP) \
  788. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  789. || MACH_OMAP_PERSEUS2
  790. depends on LEDS
  791. help
  792. If you say Y here, the red LED will be used to give a good real
  793. time indication of CPU usage, by lighting whenever the idle task
  794. is not currently executing.
  795. The LART uses the same LED for both Timer LED and CPU usage LED
  796. functions. You may choose to use both, but the Timer LED function
  797. will overrule the CPU usage LED.
  798. config ALIGNMENT_TRAP
  799. bool
  800. depends on CPU_CP15_MMU
  801. default y if !ARCH_EBSA110
  802. help
  803. ARM processors cannot fetch/store information which is not
  804. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  805. address divisible by 4. On 32-bit ARM processors, these non-aligned
  806. fetch/store instructions will be emulated in software if you say
  807. here, which has a severe performance impact. This is necessary for
  808. correct operation of some network protocols. With an IP-only
  809. configuration it is safe to say N, otherwise say Y.
  810. endmenu
  811. menu "Boot options"
  812. # Compressed boot loader in ROM. Yes, we really want to ask about
  813. # TEXT and BSS so we preserve their values in the config files.
  814. config ZBOOT_ROM_TEXT
  815. hex "Compressed ROM boot loader base address"
  816. default "0"
  817. help
  818. The physical address at which the ROM-able zImage is to be
  819. placed in the target. Platforms which normally make use of
  820. ROM-able zImage formats normally set this to a suitable
  821. value in their defconfig file.
  822. If ZBOOT_ROM is not enabled, this has no effect.
  823. config ZBOOT_ROM_BSS
  824. hex "Compressed ROM boot loader BSS address"
  825. default "0"
  826. help
  827. The base address of an area of read/write memory in the target
  828. for the ROM-able zImage which must be available while the
  829. decompressor is running. It must be large enough to hold the
  830. entire decompressed kernel plus an additional 128 KiB.
  831. Platforms which normally make use of ROM-able zImage formats
  832. normally set this to a suitable value in their defconfig file.
  833. If ZBOOT_ROM is not enabled, this has no effect.
  834. config ZBOOT_ROM
  835. bool "Compressed boot loader in ROM/flash"
  836. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  837. help
  838. Say Y here if you intend to execute your compressed kernel image
  839. (zImage) directly from ROM or flash. If unsure, say N.
  840. config CMDLINE
  841. string "Default kernel command string"
  842. default ""
  843. help
  844. On some architectures (EBSA110 and CATS), there is currently no way
  845. for the boot loader to pass arguments to the kernel. For these
  846. architectures, you should supply some command-line options at build
  847. time by entering them here. As a minimum, you should specify the
  848. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  849. config XIP_KERNEL
  850. bool "Kernel Execute-In-Place from ROM"
  851. depends on !ZBOOT_ROM
  852. help
  853. Execute-In-Place allows the kernel to run from non-volatile storage
  854. directly addressable by the CPU, such as NOR flash. This saves RAM
  855. space since the text section of the kernel is not loaded from flash
  856. to RAM. Read-write sections, such as the data section and stack,
  857. are still copied to RAM. The XIP kernel is not compressed since
  858. it has to run directly from flash, so it will take more space to
  859. store it. The flash address used to link the kernel object files,
  860. and for storing it, is configuration dependent. Therefore, if you
  861. say Y here, you must know the proper physical address where to
  862. store the kernel image depending on your own flash memory usage.
  863. Also note that the make target becomes "make xipImage" rather than
  864. "make zImage" or "make Image". The final kernel binary to put in
  865. ROM memory will be arch/arm/boot/xipImage.
  866. If unsure, say N.
  867. config XIP_PHYS_ADDR
  868. hex "XIP Kernel Physical Location"
  869. depends on XIP_KERNEL
  870. default "0x00080000"
  871. help
  872. This is the physical address in your flash memory the kernel will
  873. be linked for and stored to. This address is dependent on your
  874. own flash usage.
  875. config KEXEC
  876. bool "Kexec system call (EXPERIMENTAL)"
  877. depends on EXPERIMENTAL
  878. help
  879. kexec is a system call that implements the ability to shutdown your
  880. current kernel, and to start another kernel. It is like a reboot
  881. but it is independent of the system firmware. And like a reboot
  882. you can start any kernel with it, not just Linux.
  883. It is an ongoing process to be certain the hardware in a machine
  884. is properly shutdown, so do not be surprised if this code does not
  885. initially work for you. It may help to enable device hotplugging
  886. support.
  887. config ATAGS_PROC
  888. bool "Export atags in procfs"
  889. depends on KEXEC
  890. default y
  891. help
  892. Should the atags used to boot the kernel be exported in an "atags"
  893. file in procfs. Useful with kexec.
  894. endmenu
  895. menu "CPU Power Management"
  896. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
  897. source "drivers/cpufreq/Kconfig"
  898. config CPU_FREQ_SA1100
  899. bool
  900. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  901. default y
  902. config CPU_FREQ_SA1110
  903. bool
  904. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  905. default y
  906. config CPU_FREQ_INTEGRATOR
  907. tristate "CPUfreq driver for ARM Integrator CPUs"
  908. depends on ARCH_INTEGRATOR && CPU_FREQ
  909. default y
  910. help
  911. This enables the CPUfreq driver for ARM Integrator CPUs.
  912. For details, take a look at <file:Documentation/cpu-freq>.
  913. If in doubt, say Y.
  914. config CPU_FREQ_IMX
  915. tristate "CPUfreq driver for i.MX CPUs"
  916. depends on ARCH_IMX && CPU_FREQ
  917. default n
  918. help
  919. This enables the CPUfreq driver for i.MX CPUs.
  920. If in doubt, say N.
  921. config CPU_FREQ_PXA
  922. bool
  923. depends on CPU_FREQ && ARCH_PXA && PXA25x
  924. default y
  925. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  926. endif
  927. source "drivers/cpuidle/Kconfig"
  928. endmenu
  929. menu "Floating point emulation"
  930. comment "At least one emulation must be selected"
  931. config FPE_NWFPE
  932. bool "NWFPE math emulation"
  933. depends on !AEABI || OABI_COMPAT
  934. ---help---
  935. Say Y to include the NWFPE floating point emulator in the kernel.
  936. This is necessary to run most binaries. Linux does not currently
  937. support floating point hardware so you need to say Y here even if
  938. your machine has an FPA or floating point co-processor podule.
  939. You may say N here if you are going to load the Acorn FPEmulator
  940. early in the bootup.
  941. config FPE_NWFPE_XP
  942. bool "Support extended precision"
  943. depends on FPE_NWFPE
  944. help
  945. Say Y to include 80-bit support in the kernel floating-point
  946. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  947. Note that gcc does not generate 80-bit operations by default,
  948. so in most cases this option only enlarges the size of the
  949. floating point emulator without any good reason.
  950. You almost surely want to say N here.
  951. config FPE_FASTFPE
  952. bool "FastFPE math emulation (EXPERIMENTAL)"
  953. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  954. ---help---
  955. Say Y here to include the FAST floating point emulator in the kernel.
  956. This is an experimental much faster emulator which now also has full
  957. precision for the mantissa. It does not support any exceptions.
  958. It is very simple, and approximately 3-6 times faster than NWFPE.
  959. It should be sufficient for most programs. It may be not suitable
  960. for scientific calculations, but you have to check this for yourself.
  961. If you do not feel you need a faster FP emulation you should better
  962. choose NWFPE.
  963. config VFP
  964. bool "VFP-format floating point maths"
  965. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  966. help
  967. Say Y to include VFP support code in the kernel. This is needed
  968. if your hardware includes a VFP unit.
  969. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  970. release notes and additional status information.
  971. Say N if your target does not have VFP hardware.
  972. config VFPv3
  973. bool
  974. depends on VFP
  975. default y if CPU_V7
  976. config NEON
  977. bool "Advanced SIMD (NEON) Extension support"
  978. depends on VFPv3 && CPU_V7
  979. help
  980. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  981. Extension.
  982. endmenu
  983. menu "Userspace binary formats"
  984. source "fs/Kconfig.binfmt"
  985. config ARTHUR
  986. tristate "RISC OS personality"
  987. depends on !AEABI
  988. help
  989. Say Y here to include the kernel code necessary if you want to run
  990. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  991. experimental; if this sounds frightening, say N and sleep in peace.
  992. You can also say M here to compile this support as a module (which
  993. will be called arthur).
  994. endmenu
  995. menu "Power management options"
  996. source "kernel/power/Kconfig"
  997. config ARCH_SUSPEND_POSSIBLE
  998. def_bool y
  999. endmenu
  1000. source "net/Kconfig"
  1001. menu "Device Drivers"
  1002. source "drivers/base/Kconfig"
  1003. source "drivers/connector/Kconfig"
  1004. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  1005. source "drivers/mtd/Kconfig"
  1006. endif
  1007. source "drivers/parport/Kconfig"
  1008. source "drivers/pnp/Kconfig"
  1009. source "drivers/block/Kconfig"
  1010. # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
  1011. source "drivers/misc/Kconfig"
  1012. source "drivers/ide/Kconfig"
  1013. source "drivers/scsi/Kconfig"
  1014. source "drivers/ata/Kconfig"
  1015. source "drivers/md/Kconfig"
  1016. source "drivers/message/fusion/Kconfig"
  1017. source "drivers/ieee1394/Kconfig"
  1018. source "drivers/message/i2o/Kconfig"
  1019. source "drivers/net/Kconfig"
  1020. source "drivers/isdn/Kconfig"
  1021. # input before char - char/joystick depends on it. As does USB.
  1022. source "drivers/input/Kconfig"
  1023. source "drivers/char/Kconfig"
  1024. source "drivers/i2c/Kconfig"
  1025. source "drivers/spi/Kconfig"
  1026. source "drivers/gpio/Kconfig"
  1027. source "drivers/w1/Kconfig"
  1028. source "drivers/power/Kconfig"
  1029. source "drivers/hwmon/Kconfig"
  1030. source "drivers/thermal/Kconfig"
  1031. source "drivers/watchdog/Kconfig"
  1032. source "drivers/ssb/Kconfig"
  1033. #source "drivers/l3/Kconfig"
  1034. source "drivers/mfd/Kconfig"
  1035. source "drivers/media/Kconfig"
  1036. source "drivers/video/Kconfig"
  1037. source "sound/Kconfig"
  1038. source "drivers/hid/Kconfig"
  1039. source "drivers/usb/Kconfig"
  1040. source "drivers/uwb/Kconfig"
  1041. source "drivers/mmc/Kconfig"
  1042. source "drivers/memstick/Kconfig"
  1043. source "drivers/accessibility/Kconfig"
  1044. source "drivers/leds/Kconfig"
  1045. source "drivers/rtc/Kconfig"
  1046. source "drivers/dma/Kconfig"
  1047. source "drivers/dca/Kconfig"
  1048. source "drivers/auxdisplay/Kconfig"
  1049. source "drivers/regulator/Kconfig"
  1050. source "drivers/uio/Kconfig"
  1051. source "drivers/staging/Kconfig"
  1052. endmenu
  1053. source "fs/Kconfig"
  1054. source "arch/arm/Kconfig.debug"
  1055. source "security/Kconfig"
  1056. source "crypto/Kconfig"
  1057. source "lib/Kconfig"