Kconfig 31 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. bool
  124. def_bool y
  125. if OPROFILE
  126. config OPROFILE_ARMV6
  127. def_bool y
  128. depends on CPU_V6 && !SMP
  129. select OPROFILE_ARM11_CORE
  130. config OPROFILE_MPCORE
  131. def_bool y
  132. depends on CPU_V6 && SMP
  133. select OPROFILE_ARM11_CORE
  134. config OPROFILE_ARM11_CORE
  135. bool
  136. config OPROFILE_ARMV7
  137. def_bool y
  138. depends on CPU_V7 && !SMP
  139. bool
  140. endif
  141. config VECTORS_BASE
  142. hex
  143. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  144. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  145. default 0x00000000
  146. help
  147. The base address of exception vectors.
  148. source "init/Kconfig"
  149. source "kernel/Kconfig.freezer"
  150. menu "System Type"
  151. choice
  152. prompt "ARM system type"
  153. default ARCH_VERSATILE
  154. config ARCH_AAEC2000
  155. bool "Agilent AAEC-2000 based"
  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 ICST525
  165. help
  166. Support for ARM's Integrator platform.
  167. config ARCH_REALVIEW
  168. bool "ARM Ltd. RealView family"
  169. select ARM_AMBA
  170. select HAVE_CLK
  171. select ICST307
  172. select GENERIC_TIME
  173. select GENERIC_CLOCKEVENTS
  174. help
  175. This enables support for ARM Ltd RealView boards.
  176. config ARCH_VERSATILE
  177. bool "ARM Ltd. Versatile family"
  178. select ARM_AMBA
  179. select ARM_VIC
  180. select HAVE_CLK
  181. select ICST307
  182. select GENERIC_TIME
  183. select GENERIC_CLOCKEVENTS
  184. help
  185. This enables support for ARM Ltd Versatile board.
  186. config ARCH_AT91
  187. bool "Atmel AT91"
  188. select GENERIC_GPIO
  189. select HAVE_CLK
  190. help
  191. This enables support for systems based on the Atmel AT91RM9200,
  192. AT91SAM9 and AT91CAP9 processors.
  193. config ARCH_CLPS711X
  194. bool "Cirrus Logic CLPS711x/EP721x-based"
  195. help
  196. Support for Cirrus Logic 711x/721x based boards.
  197. config ARCH_EBSA110
  198. bool "EBSA-110"
  199. select ISA
  200. select NO_IOPORT
  201. help
  202. This is an evaluation board for the StrongARM processor available
  203. from Digital. It has limited hardware on-board, including an
  204. Ethernet interface, two PCMCIA sockets, two serial ports and a
  205. parallel port.
  206. config ARCH_EP93XX
  207. bool "EP93xx-based"
  208. select ARM_AMBA
  209. select ARM_VIC
  210. select GENERIC_GPIO
  211. select HAVE_CLK
  212. select ARCH_REQUIRE_GPIOLIB
  213. help
  214. This enables support for the Cirrus EP93xx series of CPUs.
  215. config ARCH_FOOTBRIDGE
  216. bool "FootBridge"
  217. select FOOTBRIDGE
  218. help
  219. Support for systems based on the DC21285 companion chip
  220. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  221. config ARCH_NETX
  222. bool "Hilscher NetX based"
  223. select ARM_VIC
  224. help
  225. This enables support for systems based on the Hilscher NetX Soc
  226. config ARCH_H720X
  227. bool "Hynix HMS720x-based"
  228. select ISA_DMA_API
  229. help
  230. This enables support for systems based on the Hynix HMS720x
  231. config ARCH_IMX
  232. bool "IMX"
  233. select GENERIC_GPIO
  234. select GENERIC_TIME
  235. select GENERIC_CLOCKEVENTS
  236. help
  237. Support for Motorola's i.MX family of processors (MX1, MXL).
  238. config ARCH_IOP13XX
  239. bool "IOP13xx-based"
  240. depends on MMU
  241. select PLAT_IOP
  242. select PCI
  243. select ARCH_SUPPORTS_MSI
  244. select VMSPLIT_1G
  245. help
  246. Support for Intel's IOP13XX (XScale) family of processors.
  247. config ARCH_IOP32X
  248. bool "IOP32x-based"
  249. depends on MMU
  250. select PLAT_IOP
  251. select PCI
  252. select GENERIC_GPIO
  253. select ARCH_REQUIRE_GPIOLIB
  254. help
  255. Support for Intel's 80219 and IOP32X (XScale) family of
  256. processors.
  257. config ARCH_IOP33X
  258. bool "IOP33x-based"
  259. depends on MMU
  260. select PLAT_IOP
  261. select PCI
  262. select GENERIC_GPIO
  263. select ARCH_REQUIRE_GPIOLIB
  264. help
  265. Support for Intel's IOP33X (XScale) family of processors.
  266. config ARCH_IXP23XX
  267. bool "IXP23XX-based"
  268. depends on MMU
  269. select PCI
  270. help
  271. Support for Intel's IXP23xx (XScale) family of processors.
  272. config ARCH_IXP2000
  273. bool "IXP2400/2800-based"
  274. depends on MMU
  275. select PCI
  276. help
  277. Support for Intel's IXP2400/2800 (XScale) family of processors.
  278. config ARCH_IXP4XX
  279. bool "IXP4xx-based"
  280. depends on MMU
  281. select GENERIC_GPIO
  282. select GENERIC_TIME
  283. select GENERIC_CLOCKEVENTS
  284. select DMABOUNCE if PCI
  285. help
  286. Support for Intel's IXP4XX (XScale) family of processors.
  287. config ARCH_L7200
  288. bool "LinkUp-L7200"
  289. select FIQ
  290. help
  291. Say Y here if you intend to run this kernel on a LinkUp Systems
  292. L7200 Software Development Board which uses an ARM720T processor.
  293. Information on this board can be obtained at:
  294. <http://www.linkupsys.com/>
  295. If you have any questions or comments about the Linux kernel port
  296. to this board, send e-mail to <sjhill@cotw.com>.
  297. config ARCH_KIRKWOOD
  298. bool "Marvell Kirkwood"
  299. select PCI
  300. select GENERIC_TIME
  301. select GENERIC_CLOCKEVENTS
  302. select PLAT_ORION
  303. help
  304. Support for the following Marvell Kirkwood series SoCs:
  305. 88F6180, 88F6192 and 88F6281.
  306. config ARCH_KS8695
  307. bool "Micrel/Kendin KS8695"
  308. select GENERIC_GPIO
  309. help
  310. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  311. System-on-Chip devices.
  312. config ARCH_NS9XXX
  313. bool "NetSilicon NS9xxx"
  314. select GENERIC_GPIO
  315. select GENERIC_TIME
  316. select GENERIC_CLOCKEVENTS
  317. select HAVE_CLK
  318. help
  319. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  320. System.
  321. <http://www.digi.com/products/microprocessors/index.jsp>
  322. config ARCH_LOKI
  323. bool "Marvell Loki (88RC8480)"
  324. select GENERIC_TIME
  325. select GENERIC_CLOCKEVENTS
  326. select PLAT_ORION
  327. help
  328. Support for the Marvell Loki (88RC8480) SoC.
  329. config ARCH_MV78XX0
  330. bool "Marvell MV78xx0"
  331. select PCI
  332. select GENERIC_TIME
  333. select GENERIC_CLOCKEVENTS
  334. select PLAT_ORION
  335. help
  336. Support for the following Marvell MV78xx0 series SoCs:
  337. MV781x0, MV782x0.
  338. config ARCH_MXC
  339. bool "Freescale MXC/iMX-based"
  340. select GENERIC_TIME
  341. select GENERIC_CLOCKEVENTS
  342. select ARCH_MTD_XIP
  343. select GENERIC_GPIO
  344. select ARCH_REQUIRE_GPIOLIB
  345. help
  346. Support for Freescale MXC/iMX-based family of processors
  347. config ARCH_ORION5X
  348. bool "Marvell Orion"
  349. depends on MMU
  350. select PCI
  351. select GENERIC_GPIO
  352. select GENERIC_TIME
  353. select GENERIC_CLOCKEVENTS
  354. select PLAT_ORION
  355. help
  356. Support for the following Marvell Orion 5x series SoCs:
  357. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  358. Orion-2 (5281), Orion-1-90 (6183).
  359. config ARCH_PNX4008
  360. bool "Philips Nexperia PNX4008 Mobile"
  361. select HAVE_CLK
  362. help
  363. This enables support for Philips PNX4008 mobile platform.
  364. config ARCH_PXA
  365. bool "PXA2xx/PXA3xx-based"
  366. depends on MMU
  367. select ARCH_MTD_XIP
  368. select GENERIC_GPIO
  369. select HAVE_CLK
  370. select ARCH_REQUIRE_GPIOLIB
  371. select GENERIC_TIME
  372. select GENERIC_CLOCKEVENTS
  373. select TICK_ONESHOT
  374. help
  375. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  376. config ARCH_RPC
  377. bool "RiscPC"
  378. select ARCH_ACORN
  379. select FIQ
  380. select TIMER_ACORN
  381. select ARCH_MAY_HAVE_PC_FDC
  382. select HAVE_PATA_PLATFORM
  383. select ISA_DMA_API
  384. select NO_IOPORT
  385. select ARCH_SPARSEMEM_ENABLE
  386. help
  387. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  388. CD-ROM interface, serial and parallel port, and the floppy drive.
  389. config ARCH_SA1100
  390. bool "SA1100-based"
  391. select ISA
  392. select ARCH_SPARSEMEM_ENABLE
  393. select ARCH_MTD_XIP
  394. select GENERIC_GPIO
  395. select GENERIC_TIME
  396. select GENERIC_CLOCKEVENTS
  397. select HAVE_CLK
  398. select TICK_ONESHOT
  399. select ARCH_REQUIRE_GPIOLIB
  400. help
  401. Support for StrongARM 11x0 based boards.
  402. config ARCH_S3C2410
  403. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  404. select GENERIC_GPIO
  405. select HAVE_CLK
  406. help
  407. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  408. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  409. the Samsung SMDK2410 development board (and derivatives).
  410. config ARCH_SHARK
  411. bool "Shark"
  412. select ISA
  413. select ISA_DMA
  414. select ZONE_DMA
  415. select PCI
  416. help
  417. Support for the StrongARM based Digital DNARD machine, also known
  418. as "Shark" (<http://www.shark-linux.de/shark.html>).
  419. config ARCH_LH7A40X
  420. bool "Sharp LH7A40X"
  421. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  422. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  423. help
  424. Say Y here for systems based on one of the Sharp LH7A40X
  425. System on a Chip processors. These CPUs include an ARM922T
  426. core with a wide array of integrated devices for
  427. hand-held and low-power applications.
  428. config ARCH_DAVINCI
  429. bool "TI DaVinci"
  430. select GENERIC_TIME
  431. select GENERIC_CLOCKEVENTS
  432. select GENERIC_GPIO
  433. select ARCH_REQUIRE_GPIOLIB
  434. select HAVE_CLK
  435. select ZONE_DMA
  436. help
  437. Support for TI's DaVinci platform.
  438. config ARCH_OMAP
  439. bool "TI OMAP"
  440. select GENERIC_GPIO
  441. select HAVE_CLK
  442. select ARCH_REQUIRE_GPIOLIB
  443. select GENERIC_TIME
  444. select GENERIC_CLOCKEVENTS
  445. help
  446. Support for TI's OMAP platform (OMAP1 and OMAP2).
  447. config ARCH_MSM
  448. bool "Qualcomm MSM"
  449. select GENERIC_TIME
  450. select GENERIC_CLOCKEVENTS
  451. help
  452. Support for Qualcomm MSM7K based systems. This runs on the ARM11
  453. apps processor of the MSM7K and depends on a shared memory
  454. interface to the ARM9 modem processor which runs the baseband stack
  455. and controls some vital subsystems (clock and power control, etc).
  456. endchoice
  457. source "arch/arm/mach-clps711x/Kconfig"
  458. source "arch/arm/mach-ep93xx/Kconfig"
  459. source "arch/arm/mach-footbridge/Kconfig"
  460. source "arch/arm/mach-integrator/Kconfig"
  461. source "arch/arm/mach-iop32x/Kconfig"
  462. source "arch/arm/mach-iop33x/Kconfig"
  463. source "arch/arm/mach-iop13xx/Kconfig"
  464. source "arch/arm/mach-ixp4xx/Kconfig"
  465. source "arch/arm/mach-ixp2000/Kconfig"
  466. source "arch/arm/mach-ixp23xx/Kconfig"
  467. source "arch/arm/mach-loki/Kconfig"
  468. source "arch/arm/mach-mv78xx0/Kconfig"
  469. source "arch/arm/mach-pxa/Kconfig"
  470. source "arch/arm/mach-sa1100/Kconfig"
  471. source "arch/arm/plat-omap/Kconfig"
  472. source "arch/arm/mach-omap1/Kconfig"
  473. source "arch/arm/mach-omap2/Kconfig"
  474. source "arch/arm/mach-orion5x/Kconfig"
  475. source "arch/arm/mach-kirkwood/Kconfig"
  476. source "arch/arm/plat-s3c24xx/Kconfig"
  477. source "arch/arm/plat-s3c/Kconfig"
  478. if ARCH_S3C2410
  479. source "arch/arm/mach-s3c2400/Kconfig"
  480. source "arch/arm/mach-s3c2410/Kconfig"
  481. source "arch/arm/mach-s3c2412/Kconfig"
  482. source "arch/arm/mach-s3c2440/Kconfig"
  483. source "arch/arm/mach-s3c2442/Kconfig"
  484. source "arch/arm/mach-s3c2443/Kconfig"
  485. endif
  486. source "arch/arm/mach-lh7a40x/Kconfig"
  487. source "arch/arm/mach-imx/Kconfig"
  488. source "arch/arm/mach-h720x/Kconfig"
  489. source "arch/arm/mach-versatile/Kconfig"
  490. source "arch/arm/mach-aaec2000/Kconfig"
  491. source "arch/arm/mach-realview/Kconfig"
  492. source "arch/arm/mach-at91/Kconfig"
  493. source "arch/arm/plat-mxc/Kconfig"
  494. source "arch/arm/mach-netx/Kconfig"
  495. source "arch/arm/mach-ns9xxx/Kconfig"
  496. source "arch/arm/mach-davinci/Kconfig"
  497. source "arch/arm/mach-ks8695/Kconfig"
  498. source "arch/arm/mach-msm/Kconfig"
  499. # Definitions to make life easier
  500. config ARCH_ACORN
  501. bool
  502. config PLAT_IOP
  503. bool
  504. config PLAT_ORION
  505. bool
  506. source arch/arm/mm/Kconfig
  507. config IWMMXT
  508. bool "Enable iWMMXt support"
  509. depends on CPU_XSCALE || CPU_XSC3
  510. default y if PXA27x || PXA3xx
  511. help
  512. Enable support for iWMMXt context switching at run time if
  513. running on a CPU that supports it.
  514. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  515. config XSCALE_PMU
  516. bool
  517. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  518. default y
  519. if !MMU
  520. source "arch/arm/Kconfig-nommu"
  521. endif
  522. endmenu
  523. source "arch/arm/common/Kconfig"
  524. config FORCE_MAX_ZONEORDER
  525. int
  526. depends on SA1111
  527. default "9"
  528. menu "Bus support"
  529. config ARM_AMBA
  530. bool
  531. config ISA
  532. bool
  533. help
  534. Find out whether you have ISA slots on your motherboard. ISA is the
  535. name of a bus system, i.e. the way the CPU talks to the other stuff
  536. inside your box. Other bus systems are PCI, EISA, MicroChannel
  537. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  538. newer boards don't support it. If you have ISA, say Y, otherwise N.
  539. # Select ISA DMA controller support
  540. config ISA_DMA
  541. bool
  542. select ISA_DMA_API
  543. # Select ISA DMA interface
  544. config ISA_DMA_API
  545. bool
  546. config PCI
  547. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  548. help
  549. Find out whether you have a PCI motherboard. PCI is the name of a
  550. bus system, i.e. the way the CPU talks to the other stuff inside
  551. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  552. VESA. If you have PCI, say Y, otherwise N.
  553. config PCI_SYSCALL
  554. def_bool PCI
  555. # Select the host bridge type
  556. config PCI_HOST_VIA82C505
  557. bool
  558. depends on PCI && ARCH_SHARK
  559. default y
  560. config PCI_HOST_ITE8152
  561. bool
  562. depends on PCI && MACH_ARMCORE
  563. default y
  564. select DMABOUNCE
  565. source "drivers/pci/Kconfig"
  566. source "drivers/pcmcia/Kconfig"
  567. endmenu
  568. menu "Kernel Features"
  569. source "kernel/time/Kconfig"
  570. config SMP
  571. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  572. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
  573. select USE_GENERIC_SMP_HELPERS
  574. help
  575. This enables support for systems with more than one CPU. If you have
  576. a system with only one CPU, like most personal computers, say N. If
  577. you have a system with more than one CPU, say Y.
  578. If you say N here, the kernel will run on single and multiprocessor
  579. machines, but will use only one CPU of a multiprocessor machine. If
  580. you say Y here, the kernel will run on many, but not all, single
  581. processor machines. On a single processor machine, the kernel will
  582. run faster if you say N here.
  583. See also <file:Documentation/i386/IO-APIC.txt>,
  584. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  585. <http://www.linuxdoc.org/docs.html#howto>.
  586. If you don't know what to do here, say N.
  587. choice
  588. prompt "Memory split"
  589. default VMSPLIT_3G
  590. help
  591. Select the desired split between kernel and user memory.
  592. If you are not absolutely sure what you are doing, leave this
  593. option alone!
  594. config VMSPLIT_3G
  595. bool "3G/1G user/kernel split"
  596. config VMSPLIT_2G
  597. bool "2G/2G user/kernel split"
  598. config VMSPLIT_1G
  599. bool "1G/3G user/kernel split"
  600. endchoice
  601. config PAGE_OFFSET
  602. hex
  603. default 0x40000000 if VMSPLIT_1G
  604. default 0x80000000 if VMSPLIT_2G
  605. default 0xC0000000
  606. config NR_CPUS
  607. int "Maximum number of CPUs (2-32)"
  608. range 2 32
  609. depends on SMP
  610. default "4"
  611. config HOTPLUG_CPU
  612. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  613. depends on SMP && HOTPLUG && EXPERIMENTAL
  614. help
  615. Say Y here to experiment with turning CPUs off and on. CPUs
  616. can be controlled through /sys/devices/system/cpu.
  617. config LOCAL_TIMERS
  618. bool "Use local timer interrupts"
  619. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
  620. default y
  621. help
  622. Enable support for local timers on SMP platforms, rather then the
  623. legacy IPI broadcast method. Local timers allows the system
  624. accounting to be spread across the timer interval, preventing a
  625. "thundering herd" at every timer tick.
  626. config PREEMPT
  627. bool "Preemptible Kernel (EXPERIMENTAL)"
  628. depends on EXPERIMENTAL
  629. help
  630. This option reduces the latency of the kernel when reacting to
  631. real-time or interactive events by allowing a low priority process to
  632. be preempted even if it is in kernel mode executing a system call.
  633. This allows applications to run more reliably even when the system is
  634. under load.
  635. Say Y here if you are building a kernel for a desktop, embedded
  636. or real-time system. Say N if you are unsure.
  637. config HZ
  638. int
  639. default 128 if ARCH_L7200
  640. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  641. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  642. default AT91_TIMER_HZ if ARCH_AT91
  643. default 100
  644. config AEABI
  645. bool "Use the ARM EABI to compile the kernel"
  646. help
  647. This option allows for the kernel to be compiled using the latest
  648. ARM ABI (aka EABI). This is only useful if you are using a user
  649. space environment that is also compiled with EABI.
  650. Since there are major incompatibilities between the legacy ABI and
  651. EABI, especially with regard to structure member alignment, this
  652. option also changes the kernel syscall calling convention to
  653. disambiguate both ABIs and allow for backward compatibility support
  654. (selected with CONFIG_OABI_COMPAT).
  655. To use this you need GCC version 4.0.0 or later.
  656. config OABI_COMPAT
  657. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  658. depends on AEABI && EXPERIMENTAL
  659. default y
  660. help
  661. This option preserves the old syscall interface along with the
  662. new (ARM EABI) one. It also provides a compatibility layer to
  663. intercept syscalls that have structure arguments which layout
  664. in memory differs between the legacy ABI and the new ARM EABI
  665. (only for non "thumb" binaries). This option adds a tiny
  666. overhead to all syscalls and produces a slightly larger kernel.
  667. If you know you'll be using only pure EABI user space then you
  668. can say N here. If this option is not selected and you attempt
  669. to execute a legacy ABI binary then the result will be
  670. UNPREDICTABLE (in fact it can be predicted that it won't work
  671. at all). If in doubt say Y.
  672. config ARCH_FLATMEM_HAS_HOLES
  673. bool
  674. default y
  675. depends on FLATMEM
  676. # Discontigmem is deprecated
  677. config ARCH_DISCONTIGMEM_ENABLE
  678. bool
  679. config ARCH_SPARSEMEM_ENABLE
  680. bool
  681. config ARCH_SPARSEMEM_DEFAULT
  682. def_bool ARCH_SPARSEMEM_ENABLE
  683. config ARCH_SELECT_MEMORY_MODEL
  684. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  685. config NODES_SHIFT
  686. int
  687. default "4" if ARCH_LH7A40X
  688. default "2"
  689. depends on NEED_MULTIPLE_NODES
  690. source "mm/Kconfig"
  691. config LEDS
  692. bool "Timer and CPU usage LEDs"
  693. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  694. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  695. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  696. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  697. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  698. ARCH_AT91 || ARCH_DAVINCI || \
  699. ARCH_KS8695 || MACH_RD88F5182
  700. help
  701. If you say Y here, the LEDs on your machine will be used
  702. to provide useful information about your current system status.
  703. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  704. be able to select which LEDs are active using the options below. If
  705. you are compiling a kernel for the EBSA-110 or the LART however, the
  706. red LED will simply flash regularly to indicate that the system is
  707. still functional. It is safe to say Y here if you have a CATS
  708. system, but the driver will do nothing.
  709. config LEDS_TIMER
  710. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  711. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  712. || MACH_OMAP_PERSEUS2
  713. depends on LEDS
  714. depends on !GENERIC_CLOCKEVENTS
  715. default y if ARCH_EBSA110
  716. help
  717. If you say Y here, one of the system LEDs (the green one on the
  718. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  719. will flash regularly to indicate that the system is still
  720. operational. This is mainly useful to kernel hackers who are
  721. debugging unstable kernels.
  722. The LART uses the same LED for both Timer LED and CPU usage LED
  723. functions. You may choose to use both, but the Timer LED function
  724. will overrule the CPU usage LED.
  725. config LEDS_CPU
  726. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  727. !ARCH_OMAP) \
  728. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  729. || MACH_OMAP_PERSEUS2
  730. depends on LEDS
  731. help
  732. If you say Y here, the red LED will be used to give a good real
  733. time indication of CPU usage, by lighting whenever the idle task
  734. is not currently executing.
  735. The LART uses the same LED for both Timer LED and CPU usage LED
  736. functions. You may choose to use both, but the Timer LED function
  737. will overrule the CPU usage LED.
  738. config ALIGNMENT_TRAP
  739. bool
  740. depends on CPU_CP15_MMU
  741. default y if !ARCH_EBSA110
  742. help
  743. ARM processors cannot fetch/store information which is not
  744. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  745. address divisible by 4. On 32-bit ARM processors, these non-aligned
  746. fetch/store instructions will be emulated in software if you say
  747. here, which has a severe performance impact. This is necessary for
  748. correct operation of some network protocols. With an IP-only
  749. configuration it is safe to say N, otherwise say Y.
  750. endmenu
  751. menu "Boot options"
  752. # Compressed boot loader in ROM. Yes, we really want to ask about
  753. # TEXT and BSS so we preserve their values in the config files.
  754. config ZBOOT_ROM_TEXT
  755. hex "Compressed ROM boot loader base address"
  756. default "0"
  757. help
  758. The physical address at which the ROM-able zImage is to be
  759. placed in the target. Platforms which normally make use of
  760. ROM-able zImage formats normally set this to a suitable
  761. value in their defconfig file.
  762. If ZBOOT_ROM is not enabled, this has no effect.
  763. config ZBOOT_ROM_BSS
  764. hex "Compressed ROM boot loader BSS address"
  765. default "0"
  766. help
  767. The base address of an area of read/write memory in the target
  768. for the ROM-able zImage which must be available while the
  769. decompressor is running. It must be large enough to hold the
  770. entire decompressed kernel plus an additional 128 KiB.
  771. Platforms which normally make use of ROM-able zImage formats
  772. normally set this to a suitable value in their defconfig file.
  773. If ZBOOT_ROM is not enabled, this has no effect.
  774. config ZBOOT_ROM
  775. bool "Compressed boot loader in ROM/flash"
  776. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  777. help
  778. Say Y here if you intend to execute your compressed kernel image
  779. (zImage) directly from ROM or flash. If unsure, say N.
  780. config CMDLINE
  781. string "Default kernel command string"
  782. default ""
  783. help
  784. On some architectures (EBSA110 and CATS), there is currently no way
  785. for the boot loader to pass arguments to the kernel. For these
  786. architectures, you should supply some command-line options at build
  787. time by entering them here. As a minimum, you should specify the
  788. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  789. config XIP_KERNEL
  790. bool "Kernel Execute-In-Place from ROM"
  791. depends on !ZBOOT_ROM
  792. help
  793. Execute-In-Place allows the kernel to run from non-volatile storage
  794. directly addressable by the CPU, such as NOR flash. This saves RAM
  795. space since the text section of the kernel is not loaded from flash
  796. to RAM. Read-write sections, such as the data section and stack,
  797. are still copied to RAM. The XIP kernel is not compressed since
  798. it has to run directly from flash, so it will take more space to
  799. store it. The flash address used to link the kernel object files,
  800. and for storing it, is configuration dependent. Therefore, if you
  801. say Y here, you must know the proper physical address where to
  802. store the kernel image depending on your own flash memory usage.
  803. Also note that the make target becomes "make xipImage" rather than
  804. "make zImage" or "make Image". The final kernel binary to put in
  805. ROM memory will be arch/arm/boot/xipImage.
  806. If unsure, say N.
  807. config XIP_PHYS_ADDR
  808. hex "XIP Kernel Physical Location"
  809. depends on XIP_KERNEL
  810. default "0x00080000"
  811. help
  812. This is the physical address in your flash memory the kernel will
  813. be linked for and stored to. This address is dependent on your
  814. own flash usage.
  815. config KEXEC
  816. bool "Kexec system call (EXPERIMENTAL)"
  817. depends on EXPERIMENTAL
  818. help
  819. kexec is a system call that implements the ability to shutdown your
  820. current kernel, and to start another kernel. It is like a reboot
  821. but it is independent of the system firmware. And like a reboot
  822. you can start any kernel with it, not just Linux.
  823. It is an ongoing process to be certain the hardware in a machine
  824. is properly shutdown, so do not be surprised if this code does not
  825. initially work for you. It may help to enable device hotplugging
  826. support.
  827. config ATAGS_PROC
  828. bool "Export atags in procfs"
  829. depends on KEXEC
  830. default y
  831. help
  832. Should the atags used to boot the kernel be exported in an "atags"
  833. file in procfs. Useful with kexec.
  834. endmenu
  835. menu "CPU Power Management"
  836. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
  837. source "drivers/cpufreq/Kconfig"
  838. config CPU_FREQ_SA1100
  839. bool
  840. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  841. default y
  842. config CPU_FREQ_SA1110
  843. bool
  844. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  845. default y
  846. config CPU_FREQ_INTEGRATOR
  847. tristate "CPUfreq driver for ARM Integrator CPUs"
  848. depends on ARCH_INTEGRATOR && CPU_FREQ
  849. default y
  850. help
  851. This enables the CPUfreq driver for ARM Integrator CPUs.
  852. For details, take a look at <file:Documentation/cpu-freq>.
  853. If in doubt, say Y.
  854. config CPU_FREQ_IMX
  855. tristate "CPUfreq driver for i.MX CPUs"
  856. depends on ARCH_IMX && CPU_FREQ
  857. default n
  858. help
  859. This enables the CPUfreq driver for i.MX CPUs.
  860. If in doubt, say N.
  861. config CPU_FREQ_PXA
  862. bool
  863. depends on CPU_FREQ && ARCH_PXA && PXA25x
  864. default y
  865. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  866. endif
  867. source "drivers/cpuidle/Kconfig"
  868. endmenu
  869. menu "Floating point emulation"
  870. comment "At least one emulation must be selected"
  871. config FPE_NWFPE
  872. bool "NWFPE math emulation"
  873. depends on !AEABI || OABI_COMPAT
  874. ---help---
  875. Say Y to include the NWFPE floating point emulator in the kernel.
  876. This is necessary to run most binaries. Linux does not currently
  877. support floating point hardware so you need to say Y here even if
  878. your machine has an FPA or floating point co-processor podule.
  879. You may say N here if you are going to load the Acorn FPEmulator
  880. early in the bootup.
  881. config FPE_NWFPE_XP
  882. bool "Support extended precision"
  883. depends on FPE_NWFPE
  884. help
  885. Say Y to include 80-bit support in the kernel floating-point
  886. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  887. Note that gcc does not generate 80-bit operations by default,
  888. so in most cases this option only enlarges the size of the
  889. floating point emulator without any good reason.
  890. You almost surely want to say N here.
  891. config FPE_FASTFPE
  892. bool "FastFPE math emulation (EXPERIMENTAL)"
  893. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  894. ---help---
  895. Say Y here to include the FAST floating point emulator in the kernel.
  896. This is an experimental much faster emulator which now also has full
  897. precision for the mantissa. It does not support any exceptions.
  898. It is very simple, and approximately 3-6 times faster than NWFPE.
  899. It should be sufficient for most programs. It may be not suitable
  900. for scientific calculations, but you have to check this for yourself.
  901. If you do not feel you need a faster FP emulation you should better
  902. choose NWFPE.
  903. config VFP
  904. bool "VFP-format floating point maths"
  905. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  906. help
  907. Say Y to include VFP support code in the kernel. This is needed
  908. if your hardware includes a VFP unit.
  909. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  910. release notes and additional status information.
  911. Say N if your target does not have VFP hardware.
  912. config VFPv3
  913. bool
  914. depends on VFP
  915. default y if CPU_V7
  916. config NEON
  917. bool "Advanced SIMD (NEON) Extension support"
  918. depends on VFPv3 && CPU_V7
  919. help
  920. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  921. Extension.
  922. endmenu
  923. menu "Userspace binary formats"
  924. source "fs/Kconfig.binfmt"
  925. config ARTHUR
  926. tristate "RISC OS personality"
  927. depends on !AEABI
  928. help
  929. Say Y here to include the kernel code necessary if you want to run
  930. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  931. experimental; if this sounds frightening, say N and sleep in peace.
  932. You can also say M here to compile this support as a module (which
  933. will be called arthur).
  934. endmenu
  935. menu "Power management options"
  936. source "kernel/power/Kconfig"
  937. config ARCH_SUSPEND_POSSIBLE
  938. def_bool y
  939. endmenu
  940. source "net/Kconfig"
  941. menu "Device Drivers"
  942. source "drivers/base/Kconfig"
  943. source "drivers/connector/Kconfig"
  944. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  945. source "drivers/mtd/Kconfig"
  946. endif
  947. source "drivers/parport/Kconfig"
  948. source "drivers/pnp/Kconfig"
  949. source "drivers/block/Kconfig"
  950. # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
  951. source "drivers/misc/Kconfig"
  952. source "drivers/ide/Kconfig"
  953. source "drivers/scsi/Kconfig"
  954. source "drivers/ata/Kconfig"
  955. source "drivers/md/Kconfig"
  956. source "drivers/message/fusion/Kconfig"
  957. source "drivers/ieee1394/Kconfig"
  958. source "drivers/message/i2o/Kconfig"
  959. source "drivers/net/Kconfig"
  960. source "drivers/isdn/Kconfig"
  961. # input before char - char/joystick depends on it. As does USB.
  962. source "drivers/input/Kconfig"
  963. source "drivers/char/Kconfig"
  964. source "drivers/i2c/Kconfig"
  965. source "drivers/spi/Kconfig"
  966. source "drivers/gpio/Kconfig"
  967. source "drivers/w1/Kconfig"
  968. source "drivers/power/Kconfig"
  969. source "drivers/hwmon/Kconfig"
  970. source "drivers/thermal/Kconfig"
  971. source "drivers/watchdog/Kconfig"
  972. source "drivers/ssb/Kconfig"
  973. #source "drivers/l3/Kconfig"
  974. source "drivers/mfd/Kconfig"
  975. source "drivers/media/Kconfig"
  976. source "drivers/video/Kconfig"
  977. source "sound/Kconfig"
  978. source "drivers/hid/Kconfig"
  979. source "drivers/usb/Kconfig"
  980. source "drivers/uwb/Kconfig"
  981. source "drivers/mmc/Kconfig"
  982. source "drivers/memstick/Kconfig"
  983. source "drivers/accessibility/Kconfig"
  984. source "drivers/leds/Kconfig"
  985. source "drivers/rtc/Kconfig"
  986. source "drivers/dma/Kconfig"
  987. source "drivers/dca/Kconfig"
  988. source "drivers/auxdisplay/Kconfig"
  989. source "drivers/regulator/Kconfig"
  990. source "drivers/uio/Kconfig"
  991. endmenu
  992. source "fs/Kconfig"
  993. source "arch/arm/Kconfig.debug"
  994. source "security/Kconfig"
  995. source "crypto/Kconfig"
  996. source "lib/Kconfig"