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