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_CLPS7500
  194. bool "Cirrus CL-PS7500FE"
  195. select TIMER_ACORN
  196. select ISA
  197. select NO_IOPORT
  198. select ARCH_SPARSEMEM_ENABLE
  199. help
  200. Support for the Cirrus Logic PS7500FE system-on-a-chip.
  201. config ARCH_CLPS711X
  202. bool "Cirrus Logic CLPS711x/EP721x-based"
  203. help
  204. Support for Cirrus Logic 711x/721x based boards.
  205. config ARCH_EBSA110
  206. bool "EBSA-110"
  207. select ISA
  208. select NO_IOPORT
  209. help
  210. This is an evaluation board for the StrongARM processor available
  211. from Digital. It has limited hardware on-board, including an
  212. Ethernet interface, two PCMCIA sockets, two serial ports and a
  213. parallel port.
  214. config ARCH_EP93XX
  215. bool "EP93xx-based"
  216. select ARM_AMBA
  217. select ARM_VIC
  218. select GENERIC_GPIO
  219. select HAVE_CLK
  220. select ARCH_REQUIRE_GPIOLIB
  221. help
  222. This enables support for the Cirrus EP93xx series of CPUs.
  223. config ARCH_FOOTBRIDGE
  224. bool "FootBridge"
  225. select 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 ARM_VIC
  232. help
  233. This enables support for systems based on the Hilscher NetX Soc
  234. config ARCH_H720X
  235. bool "Hynix HMS720x-based"
  236. select ISA_DMA_API
  237. help
  238. This enables support for systems based on the Hynix HMS720x
  239. config ARCH_IMX
  240. bool "IMX"
  241. select GENERIC_GPIO
  242. select GENERIC_TIME
  243. select GENERIC_CLOCKEVENTS
  244. help
  245. Support for Motorola's i.MX family of processors (MX1, MXL).
  246. config ARCH_IOP13XX
  247. bool "IOP13xx-based"
  248. depends on MMU
  249. select PLAT_IOP
  250. select PCI
  251. select ARCH_SUPPORTS_MSI
  252. select VMSPLIT_1G
  253. help
  254. Support for Intel's IOP13XX (XScale) family of processors.
  255. config ARCH_IOP32X
  256. bool "IOP32x-based"
  257. depends on MMU
  258. select PLAT_IOP
  259. select PCI
  260. select GENERIC_GPIO
  261. select ARCH_REQUIRE_GPIOLIB
  262. help
  263. Support for Intel's 80219 and IOP32X (XScale) family of
  264. processors.
  265. config ARCH_IOP33X
  266. bool "IOP33x-based"
  267. depends on MMU
  268. select PLAT_IOP
  269. select PCI
  270. select GENERIC_GPIO
  271. select ARCH_REQUIRE_GPIOLIB
  272. help
  273. Support for Intel's IOP33X (XScale) family of processors.
  274. config ARCH_IXP23XX
  275. bool "IXP23XX-based"
  276. depends on MMU
  277. select PCI
  278. help
  279. Support for Intel's IXP23xx (XScale) family of processors.
  280. config ARCH_IXP2000
  281. bool "IXP2400/2800-based"
  282. depends on MMU
  283. select PCI
  284. help
  285. Support for Intel's IXP2400/2800 (XScale) family of processors.
  286. config ARCH_IXP4XX
  287. bool "IXP4xx-based"
  288. depends on MMU
  289. select GENERIC_GPIO
  290. select GENERIC_TIME
  291. select GENERIC_CLOCKEVENTS
  292. select DMABOUNCE if PCI
  293. help
  294. Support for Intel's IXP4XX (XScale) family of processors.
  295. config ARCH_L7200
  296. bool "LinkUp-L7200"
  297. select FIQ
  298. help
  299. Say Y here if you intend to run this kernel on a LinkUp Systems
  300. L7200 Software Development Board which uses an ARM720T processor.
  301. Information on this board can be obtained at:
  302. <http://www.linkupsys.com/>
  303. If you have any questions or comments about the Linux kernel port
  304. to this board, send e-mail to <sjhill@cotw.com>.
  305. config ARCH_KIRKWOOD
  306. bool "Marvell Kirkwood"
  307. select PCI
  308. select GENERIC_TIME
  309. select GENERIC_CLOCKEVENTS
  310. select PLAT_ORION
  311. help
  312. Support for the following Marvell Kirkwood series SoCs:
  313. 88F6180, 88F6192 and 88F6281.
  314. config ARCH_KS8695
  315. bool "Micrel/Kendin KS8695"
  316. select GENERIC_GPIO
  317. help
  318. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  319. System-on-Chip devices.
  320. config ARCH_NS9XXX
  321. bool "NetSilicon NS9xxx"
  322. select GENERIC_GPIO
  323. select GENERIC_TIME
  324. select GENERIC_CLOCKEVENTS
  325. select HAVE_CLK
  326. help
  327. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  328. System.
  329. <http://www.digi.com/products/microprocessors/index.jsp>
  330. config ARCH_LOKI
  331. bool "Marvell Loki (88RC8480)"
  332. select GENERIC_TIME
  333. select GENERIC_CLOCKEVENTS
  334. select PLAT_ORION
  335. help
  336. Support for the Marvell Loki (88RC8480) SoC.
  337. config ARCH_MV78XX0
  338. bool "Marvell MV78xx0"
  339. select PCI
  340. select GENERIC_TIME
  341. select GENERIC_CLOCKEVENTS
  342. select PLAT_ORION
  343. help
  344. Support for the following Marvell MV78xx0 series SoCs:
  345. MV781x0, MV782x0.
  346. config ARCH_MXC
  347. bool "Freescale MXC/iMX-based"
  348. select GENERIC_TIME
  349. select GENERIC_CLOCKEVENTS
  350. select ARCH_MTD_XIP
  351. select GENERIC_GPIO
  352. select ARCH_REQUIRE_GPIOLIB
  353. help
  354. Support for Freescale MXC/iMX-based family of processors
  355. config ARCH_ORION5X
  356. bool "Marvell Orion"
  357. depends on MMU
  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 Orion 5x series SoCs:
  365. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  366. Orion-2 (5281), Orion-1-90 (6183).
  367. config ARCH_PNX4008
  368. bool "Philips Nexperia PNX4008 Mobile"
  369. select HAVE_CLK
  370. help
  371. This enables support for Philips PNX4008 mobile platform.
  372. config ARCH_PXA
  373. bool "PXA2xx/PXA3xx-based"
  374. depends on MMU
  375. select ARCH_MTD_XIP
  376. select GENERIC_GPIO
  377. select HAVE_CLK
  378. select ARCH_REQUIRE_GPIOLIB
  379. select GENERIC_TIME
  380. select GENERIC_CLOCKEVENTS
  381. select TICK_ONESHOT
  382. help
  383. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  384. config ARCH_RPC
  385. bool "RiscPC"
  386. select ARCH_ACORN
  387. select FIQ
  388. select TIMER_ACORN
  389. select ARCH_MAY_HAVE_PC_FDC
  390. select HAVE_PATA_PLATFORM
  391. select ISA_DMA_API
  392. select NO_IOPORT
  393. select ARCH_SPARSEMEM_ENABLE
  394. help
  395. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  396. CD-ROM interface, serial and parallel port, and the floppy drive.
  397. config ARCH_SA1100
  398. bool "SA1100-based"
  399. select ISA
  400. select ARCH_SPARSEMEM_ENABLE
  401. select ARCH_MTD_XIP
  402. select GENERIC_GPIO
  403. select GENERIC_TIME
  404. select GENERIC_CLOCKEVENTS
  405. select HAVE_CLK
  406. select TICK_ONESHOT
  407. select ARCH_REQUIRE_GPIOLIB
  408. help
  409. Support for StrongARM 11x0 based boards.
  410. config ARCH_S3C2410
  411. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  412. select GENERIC_GPIO
  413. select HAVE_CLK
  414. help
  415. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  416. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  417. the Samsung SMDK2410 development board (and derivatives).
  418. config ARCH_SHARK
  419. bool "Shark"
  420. select ISA
  421. select ISA_DMA
  422. select ZONE_DMA
  423. select PCI
  424. help
  425. Support for the StrongARM based Digital DNARD machine, also known
  426. as "Shark" (<http://www.shark-linux.de/shark.html>).
  427. config ARCH_LH7A40X
  428. bool "Sharp LH7A40X"
  429. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  430. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  431. help
  432. Say Y here for systems based on one of the Sharp LH7A40X
  433. System on a Chip processors. These CPUs include an ARM922T
  434. core with a wide array of integrated devices for
  435. hand-held and low-power applications.
  436. config ARCH_DAVINCI
  437. bool "TI DaVinci"
  438. select GENERIC_TIME
  439. select GENERIC_CLOCKEVENTS
  440. select GENERIC_GPIO
  441. select ARCH_REQUIRE_GPIOLIB
  442. select HAVE_CLK
  443. select ZONE_DMA
  444. help
  445. Support for TI's DaVinci platform.
  446. config ARCH_OMAP
  447. bool "TI OMAP"
  448. select GENERIC_GPIO
  449. select HAVE_CLK
  450. select ARCH_REQUIRE_GPIOLIB
  451. select GENERIC_TIME
  452. select GENERIC_CLOCKEVENTS
  453. help
  454. Support for TI's OMAP platform (OMAP1 and OMAP2).
  455. config ARCH_MSM
  456. bool "Qualcomm MSM"
  457. select GENERIC_TIME
  458. select GENERIC_CLOCKEVENTS
  459. help
  460. Support for Qualcomm MSM7K based systems. This runs on the ARM11
  461. apps processor of the MSM7K and depends on a shared memory
  462. interface to the ARM9 modem processor which runs the baseband stack
  463. and controls some vital subsystems (clock and power control, etc).
  464. endchoice
  465. source "arch/arm/mach-clps711x/Kconfig"
  466. source "arch/arm/mach-ep93xx/Kconfig"
  467. source "arch/arm/mach-footbridge/Kconfig"
  468. source "arch/arm/mach-integrator/Kconfig"
  469. source "arch/arm/mach-iop32x/Kconfig"
  470. source "arch/arm/mach-iop33x/Kconfig"
  471. source "arch/arm/mach-iop13xx/Kconfig"
  472. source "arch/arm/mach-ixp4xx/Kconfig"
  473. source "arch/arm/mach-ixp2000/Kconfig"
  474. source "arch/arm/mach-ixp23xx/Kconfig"
  475. source "arch/arm/mach-loki/Kconfig"
  476. source "arch/arm/mach-mv78xx0/Kconfig"
  477. source "arch/arm/mach-pxa/Kconfig"
  478. source "arch/arm/mach-sa1100/Kconfig"
  479. source "arch/arm/plat-omap/Kconfig"
  480. source "arch/arm/mach-omap1/Kconfig"
  481. source "arch/arm/mach-omap2/Kconfig"
  482. source "arch/arm/mach-orion5x/Kconfig"
  483. source "arch/arm/mach-kirkwood/Kconfig"
  484. source "arch/arm/plat-s3c24xx/Kconfig"
  485. source "arch/arm/plat-s3c/Kconfig"
  486. if ARCH_S3C2410
  487. source "arch/arm/mach-s3c2400/Kconfig"
  488. source "arch/arm/mach-s3c2410/Kconfig"
  489. source "arch/arm/mach-s3c2412/Kconfig"
  490. source "arch/arm/mach-s3c2440/Kconfig"
  491. source "arch/arm/mach-s3c2442/Kconfig"
  492. source "arch/arm/mach-s3c2443/Kconfig"
  493. endif
  494. source "arch/arm/mach-lh7a40x/Kconfig"
  495. source "arch/arm/mach-imx/Kconfig"
  496. source "arch/arm/mach-h720x/Kconfig"
  497. source "arch/arm/mach-versatile/Kconfig"
  498. source "arch/arm/mach-aaec2000/Kconfig"
  499. source "arch/arm/mach-realview/Kconfig"
  500. source "arch/arm/mach-at91/Kconfig"
  501. source "arch/arm/plat-mxc/Kconfig"
  502. source "arch/arm/mach-netx/Kconfig"
  503. source "arch/arm/mach-ns9xxx/Kconfig"
  504. source "arch/arm/mach-davinci/Kconfig"
  505. source "arch/arm/mach-ks8695/Kconfig"
  506. source "arch/arm/mach-msm/Kconfig"
  507. # Definitions to make life easier
  508. config ARCH_ACORN
  509. bool
  510. config PLAT_IOP
  511. bool
  512. config PLAT_ORION
  513. bool
  514. source arch/arm/mm/Kconfig
  515. config IWMMXT
  516. bool "Enable iWMMXt support"
  517. depends on CPU_XSCALE || CPU_XSC3
  518. default y if PXA27x || PXA3xx
  519. help
  520. Enable support for iWMMXt context switching at run time if
  521. running on a CPU that supports it.
  522. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  523. config XSCALE_PMU
  524. bool
  525. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  526. default y
  527. if !MMU
  528. source "arch/arm/Kconfig-nommu"
  529. endif
  530. endmenu
  531. source "arch/arm/common/Kconfig"
  532. config FORCE_MAX_ZONEORDER
  533. int
  534. depends on SA1111
  535. default "9"
  536. menu "Bus support"
  537. config ARM_AMBA
  538. bool
  539. config ISA
  540. bool
  541. help
  542. Find out whether you have ISA slots on your motherboard. ISA is the
  543. name of a bus system, i.e. the way the CPU talks to the other stuff
  544. inside your box. Other bus systems are PCI, EISA, MicroChannel
  545. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  546. newer boards don't support it. If you have ISA, say Y, otherwise N.
  547. # Select ISA DMA controller support
  548. config ISA_DMA
  549. bool
  550. select ISA_DMA_API
  551. # Select ISA DMA interface
  552. config ISA_DMA_API
  553. bool
  554. config PCI
  555. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  556. help
  557. Find out whether you have a PCI motherboard. PCI is the name of a
  558. bus system, i.e. the way the CPU talks to the other stuff inside
  559. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  560. VESA. If you have PCI, say Y, otherwise N.
  561. config PCI_SYSCALL
  562. def_bool PCI
  563. # Select the host bridge type
  564. config PCI_HOST_VIA82C505
  565. bool
  566. depends on PCI && ARCH_SHARK
  567. default y
  568. config PCI_HOST_ITE8152
  569. bool
  570. depends on PCI && MACH_ARMCORE
  571. default y
  572. select DMABOUNCE
  573. source "drivers/pci/Kconfig"
  574. source "drivers/pcmcia/Kconfig"
  575. endmenu
  576. menu "Kernel Features"
  577. source "kernel/time/Kconfig"
  578. config SMP
  579. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  580. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
  581. select USE_GENERIC_SMP_HELPERS
  582. help
  583. This enables support for systems with more than one CPU. If you have
  584. a system with only one CPU, like most personal computers, say N. If
  585. you have a system with more than one CPU, say Y.
  586. If you say N here, the kernel will run on single and multiprocessor
  587. machines, but will use only one CPU of a multiprocessor machine. If
  588. you say Y here, the kernel will run on many, but not all, single
  589. processor machines. On a single processor machine, the kernel will
  590. run faster if you say N here.
  591. See also <file:Documentation/i386/IO-APIC.txt>,
  592. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  593. <http://www.linuxdoc.org/docs.html#howto>.
  594. If you don't know what to do here, say N.
  595. choice
  596. prompt "Memory split"
  597. default VMSPLIT_3G
  598. help
  599. Select the desired split between kernel and user memory.
  600. If you are not absolutely sure what you are doing, leave this
  601. option alone!
  602. config VMSPLIT_3G
  603. bool "3G/1G user/kernel split"
  604. config VMSPLIT_2G
  605. bool "2G/2G user/kernel split"
  606. config VMSPLIT_1G
  607. bool "1G/3G user/kernel split"
  608. endchoice
  609. config PAGE_OFFSET
  610. hex
  611. default 0x40000000 if VMSPLIT_1G
  612. default 0x80000000 if VMSPLIT_2G
  613. default 0xC0000000
  614. config NR_CPUS
  615. int "Maximum number of CPUs (2-32)"
  616. range 2 32
  617. depends on SMP
  618. default "4"
  619. config HOTPLUG_CPU
  620. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  621. depends on SMP && HOTPLUG && EXPERIMENTAL
  622. help
  623. Say Y here to experiment with turning CPUs off and on. CPUs
  624. can be controlled through /sys/devices/system/cpu.
  625. config LOCAL_TIMERS
  626. bool "Use local timer interrupts"
  627. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
  628. default y
  629. help
  630. Enable support for local timers on SMP platforms, rather then the
  631. legacy IPI broadcast method. Local timers allows the system
  632. accounting to be spread across the timer interval, preventing a
  633. "thundering herd" at every timer tick.
  634. config PREEMPT
  635. bool "Preemptible Kernel (EXPERIMENTAL)"
  636. depends on EXPERIMENTAL
  637. help
  638. This option reduces the latency of the kernel when reacting to
  639. real-time or interactive events by allowing a low priority process to
  640. be preempted even if it is in kernel mode executing a system call.
  641. This allows applications to run more reliably even when the system is
  642. under load.
  643. Say Y here if you are building a kernel for a desktop, embedded
  644. or real-time system. Say N if you are unsure.
  645. config HZ
  646. int
  647. default 128 if ARCH_L7200
  648. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  649. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  650. default AT91_TIMER_HZ if ARCH_AT91
  651. default 100
  652. config AEABI
  653. bool "Use the ARM EABI to compile the kernel"
  654. help
  655. This option allows for the kernel to be compiled using the latest
  656. ARM ABI (aka EABI). This is only useful if you are using a user
  657. space environment that is also compiled with EABI.
  658. Since there are major incompatibilities between the legacy ABI and
  659. EABI, especially with regard to structure member alignment, this
  660. option also changes the kernel syscall calling convention to
  661. disambiguate both ABIs and allow for backward compatibility support
  662. (selected with CONFIG_OABI_COMPAT).
  663. To use this you need GCC version 4.0.0 or later.
  664. config OABI_COMPAT
  665. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  666. depends on AEABI && EXPERIMENTAL
  667. default y
  668. help
  669. This option preserves the old syscall interface along with the
  670. new (ARM EABI) one. It also provides a compatibility layer to
  671. intercept syscalls that have structure arguments which layout
  672. in memory differs between the legacy ABI and the new ARM EABI
  673. (only for non "thumb" binaries). This option adds a tiny
  674. overhead to all syscalls and produces a slightly larger kernel.
  675. If you know you'll be using only pure EABI user space then you
  676. can say N here. If this option is not selected and you attempt
  677. to execute a legacy ABI binary then the result will be
  678. UNPREDICTABLE (in fact it can be predicted that it won't work
  679. at all). If in doubt say Y.
  680. config ARCH_FLATMEM_HAS_HOLES
  681. bool
  682. default y
  683. depends on FLATMEM
  684. # Discontigmem is deprecated
  685. config ARCH_DISCONTIGMEM_ENABLE
  686. bool
  687. config ARCH_SPARSEMEM_ENABLE
  688. bool
  689. config ARCH_SPARSEMEM_DEFAULT
  690. def_bool ARCH_SPARSEMEM_ENABLE
  691. config ARCH_SELECT_MEMORY_MODEL
  692. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  693. config NODES_SHIFT
  694. int
  695. default "4" if ARCH_LH7A40X
  696. default "2"
  697. depends on NEED_MULTIPLE_NODES
  698. source "mm/Kconfig"
  699. config LEDS
  700. bool "Timer and CPU usage LEDs"
  701. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  702. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  703. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  704. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  705. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  706. ARCH_AT91 || ARCH_DAVINCI || \
  707. ARCH_KS8695 || MACH_RD88F5182
  708. help
  709. If you say Y here, the LEDs on your machine will be used
  710. to provide useful information about your current system status.
  711. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  712. be able to select which LEDs are active using the options below. If
  713. you are compiling a kernel for the EBSA-110 or the LART however, the
  714. red LED will simply flash regularly to indicate that the system is
  715. still functional. It is safe to say Y here if you have a CATS
  716. system, but the driver will do nothing.
  717. config LEDS_TIMER
  718. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  719. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  720. || MACH_OMAP_PERSEUS2
  721. depends on LEDS
  722. depends on !GENERIC_CLOCKEVENTS
  723. default y if ARCH_EBSA110
  724. help
  725. If you say Y here, one of the system LEDs (the green one on the
  726. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  727. will flash regularly to indicate that the system is still
  728. operational. This is mainly useful to kernel hackers who are
  729. debugging unstable kernels.
  730. The LART uses the same LED for both Timer LED and CPU usage LED
  731. functions. You may choose to use both, but the Timer LED function
  732. will overrule the CPU usage LED.
  733. config LEDS_CPU
  734. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  735. !ARCH_OMAP) \
  736. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  737. || MACH_OMAP_PERSEUS2
  738. depends on LEDS
  739. help
  740. If you say Y here, the red LED will be used to give a good real
  741. time indication of CPU usage, by lighting whenever the idle task
  742. is not currently executing.
  743. The LART uses the same LED for both Timer LED and CPU usage LED
  744. functions. You may choose to use both, but the Timer LED function
  745. will overrule the CPU usage LED.
  746. config ALIGNMENT_TRAP
  747. bool
  748. depends on CPU_CP15_MMU
  749. default y if !ARCH_EBSA110
  750. help
  751. ARM processors cannot fetch/store information which is not
  752. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  753. address divisible by 4. On 32-bit ARM processors, these non-aligned
  754. fetch/store instructions will be emulated in software if you say
  755. here, which has a severe performance impact. This is necessary for
  756. correct operation of some network protocols. With an IP-only
  757. configuration it is safe to say N, otherwise say Y.
  758. endmenu
  759. menu "Boot options"
  760. # Compressed boot loader in ROM. Yes, we really want to ask about
  761. # TEXT and BSS so we preserve their values in the config files.
  762. config ZBOOT_ROM_TEXT
  763. hex "Compressed ROM boot loader base address"
  764. default "0"
  765. help
  766. The physical address at which the ROM-able zImage is to be
  767. placed in the target. Platforms which normally make use of
  768. ROM-able zImage formats normally set this to a suitable
  769. value in their defconfig file.
  770. If ZBOOT_ROM is not enabled, this has no effect.
  771. config ZBOOT_ROM_BSS
  772. hex "Compressed ROM boot loader BSS address"
  773. default "0"
  774. help
  775. The base address of an area of read/write memory in the target
  776. for the ROM-able zImage which must be available while the
  777. decompressor is running. It must be large enough to hold the
  778. entire decompressed kernel plus an additional 128 KiB.
  779. Platforms which normally make use of ROM-able zImage formats
  780. normally set this to a suitable value in their defconfig file.
  781. If ZBOOT_ROM is not enabled, this has no effect.
  782. config ZBOOT_ROM
  783. bool "Compressed boot loader in ROM/flash"
  784. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  785. help
  786. Say Y here if you intend to execute your compressed kernel image
  787. (zImage) directly from ROM or flash. If unsure, say N.
  788. config CMDLINE
  789. string "Default kernel command string"
  790. default ""
  791. help
  792. On some architectures (EBSA110 and CATS), there is currently no way
  793. for the boot loader to pass arguments to the kernel. For these
  794. architectures, you should supply some command-line options at build
  795. time by entering them here. As a minimum, you should specify the
  796. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  797. config XIP_KERNEL
  798. bool "Kernel Execute-In-Place from ROM"
  799. depends on !ZBOOT_ROM
  800. help
  801. Execute-In-Place allows the kernel to run from non-volatile storage
  802. directly addressable by the CPU, such as NOR flash. This saves RAM
  803. space since the text section of the kernel is not loaded from flash
  804. to RAM. Read-write sections, such as the data section and stack,
  805. are still copied to RAM. The XIP kernel is not compressed since
  806. it has to run directly from flash, so it will take more space to
  807. store it. The flash address used to link the kernel object files,
  808. and for storing it, is configuration dependent. Therefore, if you
  809. say Y here, you must know the proper physical address where to
  810. store the kernel image depending on your own flash memory usage.
  811. Also note that the make target becomes "make xipImage" rather than
  812. "make zImage" or "make Image". The final kernel binary to put in
  813. ROM memory will be arch/arm/boot/xipImage.
  814. If unsure, say N.
  815. config XIP_PHYS_ADDR
  816. hex "XIP Kernel Physical Location"
  817. depends on XIP_KERNEL
  818. default "0x00080000"
  819. help
  820. This is the physical address in your flash memory the kernel will
  821. be linked for and stored to. This address is dependent on your
  822. own flash usage.
  823. config KEXEC
  824. bool "Kexec system call (EXPERIMENTAL)"
  825. depends on EXPERIMENTAL
  826. help
  827. kexec is a system call that implements the ability to shutdown your
  828. current kernel, and to start another kernel. It is like a reboot
  829. but it is independent of the system firmware. And like a reboot
  830. you can start any kernel with it, not just Linux.
  831. It is an ongoing process to be certain the hardware in a machine
  832. is properly shutdown, so do not be surprised if this code does not
  833. initially work for you. It may help to enable device hotplugging
  834. support.
  835. config ATAGS_PROC
  836. bool "Export atags in procfs"
  837. depends on KEXEC
  838. default y
  839. help
  840. Should the atags used to boot the kernel be exported in an "atags"
  841. file in procfs. Useful with kexec.
  842. endmenu
  843. menu "CPU Power Management"
  844. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
  845. source "drivers/cpufreq/Kconfig"
  846. config CPU_FREQ_SA1100
  847. bool
  848. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  849. default y
  850. config CPU_FREQ_SA1110
  851. bool
  852. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  853. default y
  854. config CPU_FREQ_INTEGRATOR
  855. tristate "CPUfreq driver for ARM Integrator CPUs"
  856. depends on ARCH_INTEGRATOR && CPU_FREQ
  857. default y
  858. help
  859. This enables the CPUfreq driver for ARM Integrator CPUs.
  860. For details, take a look at <file:Documentation/cpu-freq>.
  861. If in doubt, say Y.
  862. config CPU_FREQ_IMX
  863. tristate "CPUfreq driver for i.MX CPUs"
  864. depends on ARCH_IMX && CPU_FREQ
  865. default n
  866. help
  867. This enables the CPUfreq driver for i.MX CPUs.
  868. If in doubt, say N.
  869. config CPU_FREQ_PXA
  870. bool
  871. depends on CPU_FREQ && ARCH_PXA && PXA25x
  872. default y
  873. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  874. endif
  875. source "drivers/cpuidle/Kconfig"
  876. endmenu
  877. menu "Floating point emulation"
  878. comment "At least one emulation must be selected"
  879. config FPE_NWFPE
  880. bool "NWFPE math emulation"
  881. depends on !AEABI || OABI_COMPAT
  882. ---help---
  883. Say Y to include the NWFPE floating point emulator in the kernel.
  884. This is necessary to run most binaries. Linux does not currently
  885. support floating point hardware so you need to say Y here even if
  886. your machine has an FPA or floating point co-processor podule.
  887. You may say N here if you are going to load the Acorn FPEmulator
  888. early in the bootup.
  889. config FPE_NWFPE_XP
  890. bool "Support extended precision"
  891. depends on FPE_NWFPE
  892. help
  893. Say Y to include 80-bit support in the kernel floating-point
  894. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  895. Note that gcc does not generate 80-bit operations by default,
  896. so in most cases this option only enlarges the size of the
  897. floating point emulator without any good reason.
  898. You almost surely want to say N here.
  899. config FPE_FASTFPE
  900. bool "FastFPE math emulation (EXPERIMENTAL)"
  901. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  902. ---help---
  903. Say Y here to include the FAST floating point emulator in the kernel.
  904. This is an experimental much faster emulator which now also has full
  905. precision for the mantissa. It does not support any exceptions.
  906. It is very simple, and approximately 3-6 times faster than NWFPE.
  907. It should be sufficient for most programs. It may be not suitable
  908. for scientific calculations, but you have to check this for yourself.
  909. If you do not feel you need a faster FP emulation you should better
  910. choose NWFPE.
  911. config VFP
  912. bool "VFP-format floating point maths"
  913. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  914. help
  915. Say Y to include VFP support code in the kernel. This is needed
  916. if your hardware includes a VFP unit.
  917. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  918. release notes and additional status information.
  919. Say N if your target does not have VFP hardware.
  920. config VFPv3
  921. bool
  922. depends on VFP
  923. default y if CPU_V7
  924. config NEON
  925. bool "Advanced SIMD (NEON) Extension support"
  926. depends on VFPv3 && CPU_V7
  927. help
  928. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  929. Extension.
  930. endmenu
  931. menu "Userspace binary formats"
  932. source "fs/Kconfig.binfmt"
  933. config ARTHUR
  934. tristate "RISC OS personality"
  935. depends on !AEABI
  936. help
  937. Say Y here to include the kernel code necessary if you want to run
  938. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  939. experimental; if this sounds frightening, say N and sleep in peace.
  940. You can also say M here to compile this support as a module (which
  941. will be called arthur).
  942. endmenu
  943. menu "Power management options"
  944. source "kernel/power/Kconfig"
  945. config ARCH_SUSPEND_POSSIBLE
  946. def_bool y
  947. endmenu
  948. source "net/Kconfig"
  949. menu "Device Drivers"
  950. source "drivers/base/Kconfig"
  951. source "drivers/connector/Kconfig"
  952. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  953. source "drivers/mtd/Kconfig"
  954. endif
  955. source "drivers/parport/Kconfig"
  956. source "drivers/pnp/Kconfig"
  957. source "drivers/block/Kconfig"
  958. # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
  959. source "drivers/misc/Kconfig"
  960. source "drivers/ide/Kconfig"
  961. source "drivers/scsi/Kconfig"
  962. source "drivers/ata/Kconfig"
  963. source "drivers/md/Kconfig"
  964. source "drivers/message/fusion/Kconfig"
  965. source "drivers/ieee1394/Kconfig"
  966. source "drivers/message/i2o/Kconfig"
  967. source "drivers/net/Kconfig"
  968. source "drivers/isdn/Kconfig"
  969. # input before char - char/joystick depends on it. As does USB.
  970. source "drivers/input/Kconfig"
  971. source "drivers/char/Kconfig"
  972. source "drivers/i2c/Kconfig"
  973. source "drivers/spi/Kconfig"
  974. source "drivers/gpio/Kconfig"
  975. source "drivers/w1/Kconfig"
  976. source "drivers/power/Kconfig"
  977. source "drivers/hwmon/Kconfig"
  978. source "drivers/thermal/Kconfig"
  979. source "drivers/watchdog/Kconfig"
  980. source "drivers/ssb/Kconfig"
  981. #source "drivers/l3/Kconfig"
  982. source "drivers/mfd/Kconfig"
  983. source "drivers/media/Kconfig"
  984. source "drivers/video/Kconfig"
  985. source "sound/Kconfig"
  986. source "drivers/hid/Kconfig"
  987. source "drivers/usb/Kconfig"
  988. source "drivers/uwb/Kconfig"
  989. source "drivers/mmc/Kconfig"
  990. source "drivers/memstick/Kconfig"
  991. source "drivers/accessibility/Kconfig"
  992. source "drivers/leds/Kconfig"
  993. source "drivers/rtc/Kconfig"
  994. source "drivers/dma/Kconfig"
  995. source "drivers/dca/Kconfig"
  996. source "drivers/auxdisplay/Kconfig"
  997. source "drivers/regulator/Kconfig"
  998. source "drivers/uio/Kconfig"
  999. endmenu
  1000. source "fs/Kconfig"
  1001. source "arch/arm/Kconfig.debug"
  1002. source "security/Kconfig"
  1003. source "crypto/Kconfig"
  1004. source "lib/Kconfig"