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