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