Kconfig 40 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. config GENERIC_TIME
  33. bool
  34. config GENERIC_CLOCKEVENTS
  35. bool
  36. config GENERIC_CLOCKEVENTS_BROADCAST
  37. bool
  38. depends on GENERIC_CLOCKEVENTS
  39. default y if SMP && !LOCAL_TIMERS
  40. config HAVE_TCM
  41. bool
  42. select GENERIC_ALLOCATOR
  43. config NO_IOPORT
  44. bool
  45. config EISA
  46. bool
  47. ---help---
  48. The Extended Industry Standard Architecture (EISA) bus was
  49. developed as an open alternative to the IBM MicroChannel bus.
  50. The EISA bus provided some of the features of the IBM MicroChannel
  51. bus while maintaining backward compatibility with cards made for
  52. the older ISA bus. The EISA bus saw limited use between 1988 and
  53. 1995 when it was made obsolete by the PCI bus.
  54. Say Y here if you are building a kernel for an EISA-based machine.
  55. Otherwise, say N.
  56. config SBUS
  57. bool
  58. config MCA
  59. bool
  60. help
  61. MicroChannel Architecture is found in some IBM PS/2 machines and
  62. laptops. It is a bus system similar to PCI or ISA. See
  63. <file:Documentation/mca.txt> (and especially the web page given
  64. there) before attempting to build an MCA bus kernel.
  65. config GENERIC_HARDIRQS
  66. bool
  67. default y
  68. config STACKTRACE_SUPPORT
  69. bool
  70. default y
  71. config HAVE_LATENCYTOP_SUPPORT
  72. bool
  73. depends on !SMP
  74. default y
  75. config LOCKDEP_SUPPORT
  76. bool
  77. default y
  78. config TRACE_IRQFLAGS_SUPPORT
  79. bool
  80. default y
  81. config HARDIRQS_SW_RESEND
  82. bool
  83. default y
  84. config GENERIC_IRQ_PROBE
  85. bool
  86. default y
  87. config GENERIC_LOCKBREAK
  88. bool
  89. default y
  90. depends on SMP && PREEMPT
  91. config RWSEM_GENERIC_SPINLOCK
  92. bool
  93. default y
  94. config RWSEM_XCHGADD_ALGORITHM
  95. bool
  96. config ARCH_HAS_ILOG2_U32
  97. bool
  98. config ARCH_HAS_ILOG2_U64
  99. bool
  100. config ARCH_HAS_CPUFREQ
  101. bool
  102. help
  103. Internal node to signify that the ARCH has CPUFREQ support
  104. and that the relevant menu configurations are displayed for
  105. it.
  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. config MMU
  151. bool "MMU-based Paged Memory Management Support"
  152. default y
  153. help
  154. Select if you want MMU-based virtualised addressing space
  155. support by paged memory management. If unsure, say 'Y'.
  156. choice
  157. prompt "ARM system type"
  158. default ARCH_VERSATILE
  159. config ARCH_AAEC2000
  160. bool "Agilent AAEC-2000 based"
  161. select CPU_ARM920T
  162. select ARM_AMBA
  163. select HAVE_CLK
  164. help
  165. This enables support for systems based on the Agilent AAEC-2000
  166. config ARCH_INTEGRATOR
  167. bool "ARM Ltd. Integrator family"
  168. select ARM_AMBA
  169. select ARCH_HAS_CPUFREQ
  170. select HAVE_CLK
  171. select COMMON_CLKDEV
  172. select ICST525
  173. help
  174. Support for ARM's Integrator platform.
  175. config ARCH_REALVIEW
  176. bool "ARM Ltd. RealView family"
  177. select ARM_AMBA
  178. select HAVE_CLK
  179. select COMMON_CLKDEV
  180. select ICST307
  181. select GENERIC_TIME
  182. select GENERIC_CLOCKEVENTS
  183. select ARCH_WANT_OPTIONAL_GPIOLIB
  184. help
  185. This enables support for ARM Ltd RealView boards.
  186. config ARCH_VERSATILE
  187. bool "ARM Ltd. Versatile family"
  188. select ARM_AMBA
  189. select ARM_VIC
  190. select HAVE_CLK
  191. select COMMON_CLKDEV
  192. select ICST307
  193. select GENERIC_TIME
  194. select GENERIC_CLOCKEVENTS
  195. select ARCH_WANT_OPTIONAL_GPIOLIB
  196. help
  197. This enables support for ARM Ltd Versatile board.
  198. config ARCH_AT91
  199. bool "Atmel AT91"
  200. select GENERIC_GPIO
  201. select ARCH_REQUIRE_GPIOLIB
  202. select HAVE_CLK
  203. help
  204. This enables support for systems based on the Atmel AT91RM9200,
  205. AT91SAM9 and AT91CAP9 processors.
  206. config ARCH_CLPS711X
  207. bool "Cirrus Logic CLPS711x/EP721x-based"
  208. select CPU_ARM720T
  209. help
  210. Support for Cirrus Logic 711x/721x based boards.
  211. config ARCH_GEMINI
  212. bool "Cortina Systems Gemini"
  213. select CPU_FA526
  214. select GENERIC_GPIO
  215. select ARCH_REQUIRE_GPIOLIB
  216. help
  217. Support for the Cortina Systems Gemini family SoCs
  218. config ARCH_EBSA110
  219. bool "EBSA-110"
  220. select CPU_SA110
  221. select ISA
  222. select NO_IOPORT
  223. help
  224. This is an evaluation board for the StrongARM processor available
  225. from Digital. It has limited hardware on-board, including an
  226. Ethernet interface, two PCMCIA sockets, two serial ports and a
  227. parallel port.
  228. config ARCH_EP93XX
  229. bool "EP93xx-based"
  230. select CPU_ARM920T
  231. select ARM_AMBA
  232. select ARM_VIC
  233. select GENERIC_GPIO
  234. select HAVE_CLK
  235. select COMMON_CLKDEV
  236. select ARCH_REQUIRE_GPIOLIB
  237. select ARCH_HAS_HOLES_MEMORYMODEL
  238. help
  239. This enables support for the Cirrus EP93xx series of CPUs.
  240. config ARCH_FOOTBRIDGE
  241. bool "FootBridge"
  242. select CPU_SA110
  243. select FOOTBRIDGE
  244. help
  245. Support for systems based on the DC21285 companion chip
  246. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  247. config ARCH_MXC
  248. bool "Freescale MXC/iMX-based"
  249. select GENERIC_TIME
  250. select GENERIC_CLOCKEVENTS
  251. select ARCH_MTD_XIP
  252. select GENERIC_GPIO
  253. select ARCH_REQUIRE_GPIOLIB
  254. select HAVE_CLK
  255. help
  256. Support for Freescale MXC/iMX-based family of processors
  257. config ARCH_STMP3XXX
  258. bool "Freescale STMP3xxx"
  259. select CPU_ARM926T
  260. select HAVE_CLK
  261. select COMMON_CLKDEV
  262. select ARCH_REQUIRE_GPIOLIB
  263. select GENERIC_TIME
  264. select GENERIC_CLOCKEVENTS
  265. select GENERIC_GPIO
  266. select USB_ARCH_HAS_EHCI
  267. help
  268. Support for systems based on the Freescale 3xxx CPUs.
  269. config ARCH_NETX
  270. bool "Hilscher NetX based"
  271. select CPU_ARM926T
  272. select ARM_VIC
  273. select GENERIC_CLOCKEVENTS
  274. select GENERIC_TIME
  275. help
  276. This enables support for systems based on the Hilscher NetX Soc
  277. config ARCH_H720X
  278. bool "Hynix HMS720x-based"
  279. select CPU_ARM720T
  280. select ISA_DMA_API
  281. help
  282. This enables support for systems based on the Hynix HMS720x
  283. config ARCH_NOMADIK
  284. bool "STMicroelectronics Nomadik"
  285. select ARM_AMBA
  286. select ARM_VIC
  287. select CPU_ARM926T
  288. select HAVE_CLK
  289. select COMMON_CLKDEV
  290. select GENERIC_TIME
  291. select GENERIC_CLOCKEVENTS
  292. select GENERIC_GPIO
  293. select ARCH_REQUIRE_GPIOLIB
  294. help
  295. Support for the Nomadik platform by ST-Ericsson
  296. config ARCH_IOP13XX
  297. bool "IOP13xx-based"
  298. depends on MMU
  299. select CPU_XSC3
  300. select PLAT_IOP
  301. select PCI
  302. select ARCH_SUPPORTS_MSI
  303. select VMSPLIT_1G
  304. help
  305. Support for Intel's IOP13XX (XScale) family of processors.
  306. config ARCH_IOP32X
  307. bool "IOP32x-based"
  308. depends on MMU
  309. select CPU_XSCALE
  310. select PLAT_IOP
  311. select PCI
  312. select GENERIC_GPIO
  313. select ARCH_REQUIRE_GPIOLIB
  314. help
  315. Support for Intel's 80219 and IOP32X (XScale) family of
  316. processors.
  317. config ARCH_IOP33X
  318. bool "IOP33x-based"
  319. depends on MMU
  320. select CPU_XSCALE
  321. select PLAT_IOP
  322. select PCI
  323. select GENERIC_GPIO
  324. select ARCH_REQUIRE_GPIOLIB
  325. help
  326. Support for Intel's IOP33X (XScale) family of processors.
  327. config ARCH_IXP23XX
  328. bool "IXP23XX-based"
  329. depends on MMU
  330. select CPU_XSC3
  331. select PCI
  332. help
  333. Support for Intel's IXP23xx (XScale) family of processors.
  334. config ARCH_IXP2000
  335. bool "IXP2400/2800-based"
  336. depends on MMU
  337. select CPU_XSCALE
  338. select PCI
  339. help
  340. Support for Intel's IXP2400/2800 (XScale) family of processors.
  341. config ARCH_IXP4XX
  342. bool "IXP4xx-based"
  343. depends on MMU
  344. select CPU_XSCALE
  345. select GENERIC_GPIO
  346. select GENERIC_TIME
  347. select GENERIC_CLOCKEVENTS
  348. select DMABOUNCE if PCI
  349. help
  350. Support for Intel's IXP4XX (XScale) family of processors.
  351. config ARCH_L7200
  352. bool "LinkUp-L7200"
  353. select CPU_ARM720T
  354. select FIQ
  355. help
  356. Say Y here if you intend to run this kernel on a LinkUp Systems
  357. L7200 Software Development Board which uses an ARM720T processor.
  358. Information on this board can be obtained at:
  359. <http://www.linkupsys.com/>
  360. If you have any questions or comments about the Linux kernel port
  361. to this board, send e-mail to <sjhill@cotw.com>.
  362. config ARCH_DOVE
  363. bool "Marvell Dove"
  364. select PCI
  365. select GENERIC_GPIO
  366. select ARCH_REQUIRE_GPIOLIB
  367. select GENERIC_TIME
  368. select GENERIC_CLOCKEVENTS
  369. select PLAT_ORION
  370. help
  371. Support for the Marvell Dove SoC 88AP510
  372. config ARCH_KIRKWOOD
  373. bool "Marvell Kirkwood"
  374. select CPU_FEROCEON
  375. select PCI
  376. select GENERIC_GPIO
  377. select ARCH_REQUIRE_GPIOLIB
  378. select GENERIC_TIME
  379. select GENERIC_CLOCKEVENTS
  380. select PLAT_ORION
  381. help
  382. Support for the following Marvell Kirkwood series SoCs:
  383. 88F6180, 88F6192 and 88F6281.
  384. config ARCH_LOKI
  385. bool "Marvell Loki (88RC8480)"
  386. select CPU_FEROCEON
  387. select GENERIC_TIME
  388. select GENERIC_CLOCKEVENTS
  389. select PLAT_ORION
  390. help
  391. Support for the Marvell Loki (88RC8480) SoC.
  392. config ARCH_MV78XX0
  393. bool "Marvell MV78xx0"
  394. select CPU_FEROCEON
  395. select PCI
  396. select GENERIC_GPIO
  397. select ARCH_REQUIRE_GPIOLIB
  398. select GENERIC_TIME
  399. select GENERIC_CLOCKEVENTS
  400. select PLAT_ORION
  401. help
  402. Support for the following Marvell MV78xx0 series SoCs:
  403. MV781x0, MV782x0.
  404. config ARCH_ORION5X
  405. bool "Marvell Orion"
  406. depends on MMU
  407. select CPU_FEROCEON
  408. select PCI
  409. select GENERIC_GPIO
  410. select ARCH_REQUIRE_GPIOLIB
  411. select GENERIC_TIME
  412. select GENERIC_CLOCKEVENTS
  413. select PLAT_ORION
  414. help
  415. Support for the following Marvell Orion 5x series SoCs:
  416. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  417. Orion-2 (5281), Orion-1-90 (6183).
  418. config ARCH_MMP
  419. bool "Marvell PXA168/910"
  420. depends on MMU
  421. select GENERIC_GPIO
  422. select ARCH_REQUIRE_GPIOLIB
  423. select HAVE_CLK
  424. select COMMON_CLKDEV
  425. select GENERIC_TIME
  426. select GENERIC_CLOCKEVENTS
  427. select TICK_ONESHOT
  428. select PLAT_PXA
  429. help
  430. Support for Marvell's PXA168/910 processor line.
  431. config ARCH_KS8695
  432. bool "Micrel/Kendin KS8695"
  433. select CPU_ARM922T
  434. select GENERIC_GPIO
  435. select ARCH_REQUIRE_GPIOLIB
  436. help
  437. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  438. System-on-Chip devices.
  439. config ARCH_NS9XXX
  440. bool "NetSilicon NS9xxx"
  441. select CPU_ARM926T
  442. select GENERIC_GPIO
  443. select GENERIC_TIME
  444. select GENERIC_CLOCKEVENTS
  445. select HAVE_CLK
  446. help
  447. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  448. System.
  449. <http://www.digi.com/products/microprocessors/index.jsp>
  450. config ARCH_W90X900
  451. bool "Nuvoton W90X900 CPU"
  452. select CPU_ARM926T
  453. select ARCH_REQUIRE_GPIOLIB
  454. select GENERIC_GPIO
  455. select HAVE_CLK
  456. select COMMON_CLKDEV
  457. select GENERIC_TIME
  458. select GENERIC_CLOCKEVENTS
  459. help
  460. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  461. At present, the w90x900 has been renamed nuc900, regarding
  462. the ARM series product line, you can login the following
  463. link address to know more.
  464. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  465. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  466. config ARCH_NUC93X
  467. bool "Nuvoton NUC93X CPU"
  468. select CPU_ARM926T
  469. select HAVE_CLK
  470. select COMMON_CLKDEV
  471. help
  472. Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
  473. low-power and high performance MPEG-4/JPEG multimedia controller chip.
  474. config ARCH_PNX4008
  475. bool "Philips Nexperia PNX4008 Mobile"
  476. select CPU_ARM926T
  477. select HAVE_CLK
  478. help
  479. This enables support for Philips PNX4008 mobile platform.
  480. config ARCH_PXA
  481. bool "PXA2xx/PXA3xx-based"
  482. depends on MMU
  483. select ARCH_MTD_XIP
  484. select ARCH_HAS_CPUFREQ
  485. select GENERIC_GPIO
  486. select HAVE_CLK
  487. select COMMON_CLKDEV
  488. select ARCH_REQUIRE_GPIOLIB
  489. select GENERIC_TIME
  490. select GENERIC_CLOCKEVENTS
  491. select TICK_ONESHOT
  492. select PLAT_PXA
  493. help
  494. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  495. config ARCH_MSM
  496. bool "Qualcomm MSM"
  497. select CPU_V6
  498. select GENERIC_TIME
  499. select GENERIC_CLOCKEVENTS
  500. help
  501. Support for Qualcomm MSM7K based systems. This runs on the ARM11
  502. apps processor of the MSM7K and depends on a shared memory
  503. interface to the ARM9 modem processor which runs the baseband stack
  504. and controls some vital subsystems (clock and power control, etc).
  505. config ARCH_RPC
  506. bool "RiscPC"
  507. select ARCH_ACORN
  508. select FIQ
  509. select TIMER_ACORN
  510. select ARCH_MAY_HAVE_PC_FDC
  511. select HAVE_PATA_PLATFORM
  512. select ISA_DMA_API
  513. select NO_IOPORT
  514. select ARCH_SPARSEMEM_ENABLE
  515. help
  516. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  517. CD-ROM interface, serial and parallel port, and the floppy drive.
  518. config ARCH_SA1100
  519. bool "SA1100-based"
  520. select CPU_SA1100
  521. select ISA
  522. select ARCH_SPARSEMEM_ENABLE
  523. select ARCH_MTD_XIP
  524. select ARCH_HAS_CPUFREQ
  525. select CPU_FREQ
  526. select GENERIC_GPIO
  527. select GENERIC_TIME
  528. select GENERIC_CLOCKEVENTS
  529. select HAVE_CLK
  530. select TICK_ONESHOT
  531. select ARCH_REQUIRE_GPIOLIB
  532. help
  533. Support for StrongARM 11x0 based boards.
  534. config ARCH_S3C2410
  535. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  536. select GENERIC_GPIO
  537. select ARCH_HAS_CPUFREQ
  538. select HAVE_CLK
  539. help
  540. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  541. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  542. the Samsung SMDK2410 development board (and derivatives).
  543. config ARCH_S3C64XX
  544. bool "Samsung S3C64XX"
  545. select GENERIC_GPIO
  546. select HAVE_CLK
  547. select ARCH_HAS_CPUFREQ
  548. help
  549. Samsung S3C64XX series based systems
  550. config ARCH_S5PC1XX
  551. bool "Samsung S5PC1XX"
  552. select GENERIC_GPIO
  553. select HAVE_CLK
  554. select CPU_V7
  555. help
  556. Samsung S5PC1XX series based systems
  557. config ARCH_SHARK
  558. bool "Shark"
  559. select CPU_SA110
  560. select ISA
  561. select ISA_DMA
  562. select ZONE_DMA
  563. select PCI
  564. help
  565. Support for the StrongARM based Digital DNARD machine, also known
  566. as "Shark" (<http://www.shark-linux.de/shark.html>).
  567. config ARCH_LH7A40X
  568. bool "Sharp LH7A40X"
  569. select CPU_ARM922T
  570. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  571. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  572. help
  573. Say Y here for systems based on one of the Sharp LH7A40X
  574. System on a Chip processors. These CPUs include an ARM922T
  575. core with a wide array of integrated devices for
  576. hand-held and low-power applications.
  577. config ARCH_U300
  578. bool "ST-Ericsson U300 Series"
  579. depends on MMU
  580. select CPU_ARM926T
  581. select HAVE_TCM
  582. select ARM_AMBA
  583. select ARM_VIC
  584. select GENERIC_TIME
  585. select GENERIC_CLOCKEVENTS
  586. select HAVE_CLK
  587. select COMMON_CLKDEV
  588. select GENERIC_GPIO
  589. help
  590. Support for ST-Ericsson U300 series mobile platforms.
  591. config ARCH_DAVINCI
  592. bool "TI DaVinci"
  593. select CPU_ARM926T
  594. select GENERIC_TIME
  595. select GENERIC_CLOCKEVENTS
  596. select GENERIC_GPIO
  597. select ARCH_REQUIRE_GPIOLIB
  598. select HAVE_CLK
  599. select ZONE_DMA
  600. select HAVE_IDE
  601. select COMMON_CLKDEV
  602. select GENERIC_ALLOCATOR
  603. help
  604. Support for TI's DaVinci platform.
  605. config ARCH_OMAP
  606. bool "TI OMAP"
  607. select GENERIC_GPIO
  608. select HAVE_CLK
  609. select ARCH_REQUIRE_GPIOLIB
  610. select ARCH_HAS_CPUFREQ
  611. select GENERIC_TIME
  612. select GENERIC_CLOCKEVENTS
  613. help
  614. Support for TI's OMAP platform (OMAP1 and OMAP2).
  615. config ARCH_BCMRING
  616. bool "Broadcom BCMRING"
  617. depends on MMU
  618. select CPU_V6
  619. select ARM_AMBA
  620. select COMMON_CLKDEV
  621. select GENERIC_TIME
  622. select GENERIC_CLOCKEVENTS
  623. select ARCH_WANT_OPTIONAL_GPIOLIB
  624. help
  625. Support for Broadcom's BCMRing platform.
  626. config ARCH_U8500
  627. bool "ST-Ericsson U8500 Series"
  628. select CPU_V7
  629. select ARM_AMBA
  630. select GENERIC_TIME
  631. select GENERIC_CLOCKEVENTS
  632. select COMMON_CLKDEV
  633. help
  634. Support for ST-Ericsson's Ux500 architecture
  635. endchoice
  636. source "arch/arm/mach-clps711x/Kconfig"
  637. source "arch/arm/mach-ep93xx/Kconfig"
  638. source "arch/arm/mach-footbridge/Kconfig"
  639. source "arch/arm/mach-gemini/Kconfig"
  640. source "arch/arm/mach-integrator/Kconfig"
  641. source "arch/arm/mach-iop32x/Kconfig"
  642. source "arch/arm/mach-iop33x/Kconfig"
  643. source "arch/arm/mach-iop13xx/Kconfig"
  644. source "arch/arm/mach-ixp4xx/Kconfig"
  645. source "arch/arm/mach-ixp2000/Kconfig"
  646. source "arch/arm/mach-ixp23xx/Kconfig"
  647. source "arch/arm/mach-loki/Kconfig"
  648. source "arch/arm/mach-mv78xx0/Kconfig"
  649. source "arch/arm/mach-pxa/Kconfig"
  650. source "arch/arm/plat-pxa/Kconfig"
  651. source "arch/arm/mach-mmp/Kconfig"
  652. source "arch/arm/mach-sa1100/Kconfig"
  653. source "arch/arm/plat-omap/Kconfig"
  654. source "arch/arm/mach-omap1/Kconfig"
  655. source "arch/arm/mach-omap2/Kconfig"
  656. source "arch/arm/mach-orion5x/Kconfig"
  657. source "arch/arm/mach-kirkwood/Kconfig"
  658. source "arch/arm/mach-dove/Kconfig"
  659. source "arch/arm/plat-samsung/Kconfig"
  660. source "arch/arm/plat-s3c24xx/Kconfig"
  661. source "arch/arm/plat-s3c64xx/Kconfig"
  662. source "arch/arm/plat-s3c/Kconfig"
  663. source "arch/arm/plat-s5pc1xx/Kconfig"
  664. if ARCH_S3C2410
  665. source "arch/arm/mach-s3c2400/Kconfig"
  666. source "arch/arm/mach-s3c2410/Kconfig"
  667. source "arch/arm/mach-s3c2412/Kconfig"
  668. source "arch/arm/mach-s3c2440/Kconfig"
  669. source "arch/arm/mach-s3c2442/Kconfig"
  670. source "arch/arm/mach-s3c2443/Kconfig"
  671. endif
  672. if ARCH_S3C64XX
  673. source "arch/arm/mach-s3c6400/Kconfig"
  674. source "arch/arm/mach-s3c6410/Kconfig"
  675. endif
  676. source "arch/arm/plat-stmp3xxx/Kconfig"
  677. if ARCH_S5PC1XX
  678. source "arch/arm/mach-s5pc100/Kconfig"
  679. endif
  680. source "arch/arm/mach-lh7a40x/Kconfig"
  681. source "arch/arm/mach-h720x/Kconfig"
  682. source "arch/arm/mach-versatile/Kconfig"
  683. source "arch/arm/mach-aaec2000/Kconfig"
  684. source "arch/arm/mach-realview/Kconfig"
  685. source "arch/arm/mach-at91/Kconfig"
  686. source "arch/arm/plat-mxc/Kconfig"
  687. source "arch/arm/mach-nomadik/Kconfig"
  688. source "arch/arm/plat-nomadik/Kconfig"
  689. source "arch/arm/mach-netx/Kconfig"
  690. source "arch/arm/mach-ns9xxx/Kconfig"
  691. source "arch/arm/mach-davinci/Kconfig"
  692. source "arch/arm/mach-ks8695/Kconfig"
  693. source "arch/arm/mach-msm/Kconfig"
  694. source "arch/arm/mach-u300/Kconfig"
  695. source "arch/arm/mach-w90x900/Kconfig"
  696. source "arch/arm/mach-nuc93x/Kconfig"
  697. source "arch/arm/mach-bcmring/Kconfig"
  698. source "arch/arm/mach-ux500/Kconfig"
  699. # Definitions to make life easier
  700. config ARCH_ACORN
  701. bool
  702. config PLAT_IOP
  703. bool
  704. select GENERIC_CLOCKEVENTS
  705. select GENERIC_TIME
  706. config PLAT_ORION
  707. bool
  708. config PLAT_PXA
  709. bool
  710. source arch/arm/mm/Kconfig
  711. config IWMMXT
  712. bool "Enable iWMMXt support"
  713. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
  714. default y if PXA27x || PXA3xx || ARCH_MMP
  715. help
  716. Enable support for iWMMXt context switching at run time if
  717. running on a CPU that supports it.
  718. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  719. config XSCALE_PMU
  720. bool
  721. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  722. default y
  723. if !MMU
  724. source "arch/arm/Kconfig-nommu"
  725. endif
  726. config ARM_ERRATA_411920
  727. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  728. depends on CPU_V6 && !SMP
  729. help
  730. Invalidation of the Instruction Cache operation can
  731. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  732. It does not affect the MPCore. This option enables the ARM Ltd.
  733. recommended workaround.
  734. config ARM_ERRATA_430973
  735. bool "ARM errata: Stale prediction on replaced interworking branch"
  736. depends on CPU_V7
  737. help
  738. This option enables the workaround for the 430973 Cortex-A8
  739. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  740. interworking branch is replaced with another code sequence at the
  741. same virtual address, whether due to self-modifying code or virtual
  742. to physical address re-mapping, Cortex-A8 does not recover from the
  743. stale interworking branch prediction. This results in Cortex-A8
  744. executing the new code sequence in the incorrect ARM or Thumb state.
  745. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  746. and also flushes the branch target cache at every context switch.
  747. Note that setting specific bits in the ACTLR register may not be
  748. available in non-secure mode.
  749. config ARM_ERRATA_458693
  750. bool "ARM errata: Processor deadlock when a false hazard is created"
  751. depends on CPU_V7
  752. help
  753. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  754. erratum. For very specific sequences of memory operations, it is
  755. possible for a hazard condition intended for a cache line to instead
  756. be incorrectly associated with a different cache line. This false
  757. hazard might then cause a processor deadlock. The workaround enables
  758. the L1 caching of the NEON accesses and disables the PLD instruction
  759. in the ACTLR register. Note that setting specific bits in the ACTLR
  760. register may not be available in non-secure mode.
  761. config ARM_ERRATA_460075
  762. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  763. depends on CPU_V7
  764. help
  765. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  766. erratum. Any asynchronous access to the L2 cache may encounter a
  767. situation in which recent store transactions to the L2 cache are lost
  768. and overwritten with stale memory contents from external memory. The
  769. workaround disables the write-allocate mode for the L2 cache via the
  770. ACTLR register. Note that setting specific bits in the ACTLR register
  771. may not be available in non-secure mode.
  772. endmenu
  773. source "arch/arm/common/Kconfig"
  774. config FORCE_MAX_ZONEORDER
  775. int
  776. depends on SA1111
  777. default "9"
  778. menu "Bus support"
  779. config ARM_AMBA
  780. bool
  781. config ISA
  782. bool
  783. help
  784. Find out whether you have ISA slots on your motherboard. ISA is the
  785. name of a bus system, i.e. the way the CPU talks to the other stuff
  786. inside your box. Other bus systems are PCI, EISA, MicroChannel
  787. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  788. newer boards don't support it. If you have ISA, say Y, otherwise N.
  789. # Select ISA DMA controller support
  790. config ISA_DMA
  791. bool
  792. select ISA_DMA_API
  793. # Select ISA DMA interface
  794. config ISA_DMA_API
  795. bool
  796. config PCI
  797. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  798. help
  799. Find out whether you have a PCI motherboard. PCI is the name of a
  800. bus system, i.e. the way the CPU talks to the other stuff inside
  801. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  802. VESA. If you have PCI, say Y, otherwise N.
  803. config PCI_SYSCALL
  804. def_bool PCI
  805. # Select the host bridge type
  806. config PCI_HOST_VIA82C505
  807. bool
  808. depends on PCI && ARCH_SHARK
  809. default y
  810. config PCI_HOST_ITE8152
  811. bool
  812. depends on PCI && MACH_ARMCORE
  813. default y
  814. select DMABOUNCE
  815. source "drivers/pci/Kconfig"
  816. source "drivers/pcmcia/Kconfig"
  817. endmenu
  818. menu "Kernel Features"
  819. source "kernel/time/Kconfig"
  820. config SMP
  821. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  822. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
  823. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
  824. depends on GENERIC_CLOCKEVENTS
  825. select USE_GENERIC_SMP_HELPERS
  826. select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
  827. help
  828. This enables support for systems with more than one CPU. If you have
  829. a system with only one CPU, like most personal computers, say N. If
  830. you have a system with more than one CPU, say Y.
  831. If you say N here, the kernel will run on single and multiprocessor
  832. machines, but will use only one CPU of a multiprocessor machine. If
  833. you say Y here, the kernel will run on many, but not all, single
  834. processor machines. On a single processor machine, the kernel will
  835. run faster if you say N here.
  836. See also <file:Documentation/i386/IO-APIC.txt>,
  837. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  838. <http://www.linuxdoc.org/docs.html#howto>.
  839. If you don't know what to do here, say N.
  840. config HAVE_ARM_SCU
  841. bool
  842. depends on SMP
  843. help
  844. This option enables support for the ARM system coherency unit
  845. config HAVE_ARM_TWD
  846. bool
  847. depends on SMP
  848. help
  849. This options enables support for the ARM timer and watchdog unit
  850. choice
  851. prompt "Memory split"
  852. default VMSPLIT_3G
  853. help
  854. Select the desired split between kernel and user memory.
  855. If you are not absolutely sure what you are doing, leave this
  856. option alone!
  857. config VMSPLIT_3G
  858. bool "3G/1G user/kernel split"
  859. config VMSPLIT_2G
  860. bool "2G/2G user/kernel split"
  861. config VMSPLIT_1G
  862. bool "1G/3G user/kernel split"
  863. endchoice
  864. config PAGE_OFFSET
  865. hex
  866. default 0x40000000 if VMSPLIT_1G
  867. default 0x80000000 if VMSPLIT_2G
  868. default 0xC0000000
  869. config NR_CPUS
  870. int "Maximum number of CPUs (2-32)"
  871. range 2 32
  872. depends on SMP
  873. default "4"
  874. config HOTPLUG_CPU
  875. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  876. depends on SMP && HOTPLUG && EXPERIMENTAL
  877. help
  878. Say Y here to experiment with turning CPUs off and on. CPUs
  879. can be controlled through /sys/devices/system/cpu.
  880. config LOCAL_TIMERS
  881. bool "Use local timer interrupts"
  882. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
  883. REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
  884. default y
  885. select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
  886. help
  887. Enable support for local timers on SMP platforms, rather then the
  888. legacy IPI broadcast method. Local timers allows the system
  889. accounting to be spread across the timer interval, preventing a
  890. "thundering herd" at every timer tick.
  891. source kernel/Kconfig.preempt
  892. config HZ
  893. int
  894. default 128 if ARCH_L7200
  895. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  896. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  897. default AT91_TIMER_HZ if ARCH_AT91
  898. default 100
  899. config THUMB2_KERNEL
  900. bool "Compile the kernel in Thumb-2 mode"
  901. depends on CPU_V7 && EXPERIMENTAL
  902. select AEABI
  903. select ARM_ASM_UNIFIED
  904. help
  905. By enabling this option, the kernel will be compiled in
  906. Thumb-2 mode. A compiler/assembler that understand the unified
  907. ARM-Thumb syntax is needed.
  908. If unsure, say N.
  909. config ARM_ASM_UNIFIED
  910. bool
  911. config AEABI
  912. bool "Use the ARM EABI to compile the kernel"
  913. help
  914. This option allows for the kernel to be compiled using the latest
  915. ARM ABI (aka EABI). This is only useful if you are using a user
  916. space environment that is also compiled with EABI.
  917. Since there are major incompatibilities between the legacy ABI and
  918. EABI, especially with regard to structure member alignment, this
  919. option also changes the kernel syscall calling convention to
  920. disambiguate both ABIs and allow for backward compatibility support
  921. (selected with CONFIG_OABI_COMPAT).
  922. To use this you need GCC version 4.0.0 or later.
  923. config OABI_COMPAT
  924. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  925. depends on AEABI && EXPERIMENTAL
  926. default y
  927. help
  928. This option preserves the old syscall interface along with the
  929. new (ARM EABI) one. It also provides a compatibility layer to
  930. intercept syscalls that have structure arguments which layout
  931. in memory differs between the legacy ABI and the new ARM EABI
  932. (only for non "thumb" binaries). This option adds a tiny
  933. overhead to all syscalls and produces a slightly larger kernel.
  934. If you know you'll be using only pure EABI user space then you
  935. can say N here. If this option is not selected and you attempt
  936. to execute a legacy ABI binary then the result will be
  937. UNPREDICTABLE (in fact it can be predicted that it won't work
  938. at all). If in doubt say Y.
  939. config ARCH_HAS_HOLES_MEMORYMODEL
  940. bool
  941. # Discontigmem is deprecated
  942. config ARCH_DISCONTIGMEM_ENABLE
  943. bool
  944. config ARCH_SPARSEMEM_ENABLE
  945. bool
  946. config ARCH_SPARSEMEM_DEFAULT
  947. def_bool ARCH_SPARSEMEM_ENABLE
  948. config ARCH_SELECT_MEMORY_MODEL
  949. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  950. config NODES_SHIFT
  951. int
  952. default "4" if ARCH_LH7A40X
  953. default "2"
  954. depends on NEED_MULTIPLE_NODES
  955. config HIGHMEM
  956. bool "High Memory Support (EXPERIMENTAL)"
  957. depends on MMU && EXPERIMENTAL
  958. help
  959. The address space of ARM processors is only 4 Gigabytes large
  960. and it has to accommodate user address space, kernel address
  961. space as well as some memory mapped IO. That means that, if you
  962. have a large amount of physical memory and/or IO, not all of the
  963. memory can be "permanently mapped" by the kernel. The physical
  964. memory that is not permanently mapped is called "high memory".
  965. Depending on the selected kernel/user memory split, minimum
  966. vmalloc space and actual amount of RAM, you may not need this
  967. option which should result in a slightly faster kernel.
  968. If unsure, say n.
  969. config HIGHPTE
  970. bool "Allocate 2nd-level pagetables from highmem"
  971. depends on HIGHMEM
  972. depends on !OUTER_CACHE
  973. source "mm/Kconfig"
  974. config LEDS
  975. bool "Timer and CPU usage LEDs"
  976. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  977. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  978. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  979. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  980. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  981. ARCH_AT91 || ARCH_DAVINCI || \
  982. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  983. help
  984. If you say Y here, the LEDs on your machine will be used
  985. to provide useful information about your current system status.
  986. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  987. be able to select which LEDs are active using the options below. If
  988. you are compiling a kernel for the EBSA-110 or the LART however, the
  989. red LED will simply flash regularly to indicate that the system is
  990. still functional. It is safe to say Y here if you have a CATS
  991. system, but the driver will do nothing.
  992. config LEDS_TIMER
  993. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  994. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  995. || MACH_OMAP_PERSEUS2
  996. depends on LEDS
  997. depends on !GENERIC_CLOCKEVENTS
  998. default y if ARCH_EBSA110
  999. help
  1000. If you say Y here, one of the system LEDs (the green one on the
  1001. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1002. will flash regularly to indicate that the system is still
  1003. operational. This is mainly useful to kernel hackers who are
  1004. debugging unstable kernels.
  1005. The LART uses the same LED for both Timer LED and CPU usage LED
  1006. functions. You may choose to use both, but the Timer LED function
  1007. will overrule the CPU usage LED.
  1008. config LEDS_CPU
  1009. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1010. !ARCH_OMAP) \
  1011. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1012. || MACH_OMAP_PERSEUS2
  1013. depends on LEDS
  1014. help
  1015. If you say Y here, the red LED will be used to give a good real
  1016. time indication of CPU usage, by lighting whenever the idle task
  1017. is not currently executing.
  1018. The LART uses the same LED for both Timer LED and CPU usage LED
  1019. functions. You may choose to use both, but the Timer LED function
  1020. will overrule the CPU usage LED.
  1021. config ALIGNMENT_TRAP
  1022. bool
  1023. depends on CPU_CP15_MMU
  1024. default y if !ARCH_EBSA110
  1025. help
  1026. ARM processors cannot fetch/store information which is not
  1027. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1028. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1029. fetch/store instructions will be emulated in software if you say
  1030. here, which has a severe performance impact. This is necessary for
  1031. correct operation of some network protocols. With an IP-only
  1032. configuration it is safe to say N, otherwise say Y.
  1033. config UACCESS_WITH_MEMCPY
  1034. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1035. depends on MMU && EXPERIMENTAL
  1036. default y if CPU_FEROCEON
  1037. help
  1038. Implement faster copy_to_user and clear_user methods for CPU
  1039. cores where a 8-word STM instruction give significantly higher
  1040. memory write throughput than a sequence of individual 32bit stores.
  1041. A possible side effect is a slight increase in scheduling latency
  1042. between threads sharing the same address space if they invoke
  1043. such copy operations with large buffers.
  1044. However, if the CPU data cache is using a write-allocate mode,
  1045. this option is unlikely to provide any performance gain.
  1046. endmenu
  1047. menu "Boot options"
  1048. # Compressed boot loader in ROM. Yes, we really want to ask about
  1049. # TEXT and BSS so we preserve their values in the config files.
  1050. config ZBOOT_ROM_TEXT
  1051. hex "Compressed ROM boot loader base address"
  1052. default "0"
  1053. help
  1054. The physical address at which the ROM-able zImage is to be
  1055. placed in the target. Platforms which normally make use of
  1056. ROM-able zImage formats normally set this to a suitable
  1057. value in their defconfig file.
  1058. If ZBOOT_ROM is not enabled, this has no effect.
  1059. config ZBOOT_ROM_BSS
  1060. hex "Compressed ROM boot loader BSS address"
  1061. default "0"
  1062. help
  1063. The base address of an area of read/write memory in the target
  1064. for the ROM-able zImage which must be available while the
  1065. decompressor is running. It must be large enough to hold the
  1066. entire decompressed kernel plus an additional 128 KiB.
  1067. Platforms which normally make use of ROM-able zImage formats
  1068. normally set this to a suitable value in their defconfig file.
  1069. If ZBOOT_ROM is not enabled, this has no effect.
  1070. config ZBOOT_ROM
  1071. bool "Compressed boot loader in ROM/flash"
  1072. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1073. help
  1074. Say Y here if you intend to execute your compressed kernel image
  1075. (zImage) directly from ROM or flash. If unsure, say N.
  1076. config CMDLINE
  1077. string "Default kernel command string"
  1078. default ""
  1079. help
  1080. On some architectures (EBSA110 and CATS), there is currently no way
  1081. for the boot loader to pass arguments to the kernel. For these
  1082. architectures, you should supply some command-line options at build
  1083. time by entering them here. As a minimum, you should specify the
  1084. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1085. config XIP_KERNEL
  1086. bool "Kernel Execute-In-Place from ROM"
  1087. depends on !ZBOOT_ROM
  1088. help
  1089. Execute-In-Place allows the kernel to run from non-volatile storage
  1090. directly addressable by the CPU, such as NOR flash. This saves RAM
  1091. space since the text section of the kernel is not loaded from flash
  1092. to RAM. Read-write sections, such as the data section and stack,
  1093. are still copied to RAM. The XIP kernel is not compressed since
  1094. it has to run directly from flash, so it will take more space to
  1095. store it. The flash address used to link the kernel object files,
  1096. and for storing it, is configuration dependent. Therefore, if you
  1097. say Y here, you must know the proper physical address where to
  1098. store the kernel image depending on your own flash memory usage.
  1099. Also note that the make target becomes "make xipImage" rather than
  1100. "make zImage" or "make Image". The final kernel binary to put in
  1101. ROM memory will be arch/arm/boot/xipImage.
  1102. If unsure, say N.
  1103. config XIP_PHYS_ADDR
  1104. hex "XIP Kernel Physical Location"
  1105. depends on XIP_KERNEL
  1106. default "0x00080000"
  1107. help
  1108. This is the physical address in your flash memory the kernel will
  1109. be linked for and stored to. This address is dependent on your
  1110. own flash usage.
  1111. config KEXEC
  1112. bool "Kexec system call (EXPERIMENTAL)"
  1113. depends on EXPERIMENTAL
  1114. help
  1115. kexec is a system call that implements the ability to shutdown your
  1116. current kernel, and to start another kernel. It is like a reboot
  1117. but it is independent of the system firmware. And like a reboot
  1118. you can start any kernel with it, not just Linux.
  1119. It is an ongoing process to be certain the hardware in a machine
  1120. is properly shutdown, so do not be surprised if this code does not
  1121. initially work for you. It may help to enable device hotplugging
  1122. support.
  1123. config ATAGS_PROC
  1124. bool "Export atags in procfs"
  1125. depends on KEXEC
  1126. default y
  1127. help
  1128. Should the atags used to boot the kernel be exported in an "atags"
  1129. file in procfs. Useful with kexec.
  1130. endmenu
  1131. menu "CPU Power Management"
  1132. if ARCH_HAS_CPUFREQ
  1133. source "drivers/cpufreq/Kconfig"
  1134. config CPU_FREQ_SA1100
  1135. bool
  1136. config CPU_FREQ_SA1110
  1137. bool
  1138. config CPU_FREQ_INTEGRATOR
  1139. tristate "CPUfreq driver for ARM Integrator CPUs"
  1140. depends on ARCH_INTEGRATOR && CPU_FREQ
  1141. default y
  1142. help
  1143. This enables the CPUfreq driver for ARM Integrator CPUs.
  1144. For details, take a look at <file:Documentation/cpu-freq>.
  1145. If in doubt, say Y.
  1146. config CPU_FREQ_PXA
  1147. bool
  1148. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1149. default y
  1150. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1151. config CPU_FREQ_S3C64XX
  1152. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1153. depends on CPU_FREQ && CPU_S3C6410
  1154. config CPU_FREQ_S3C
  1155. bool
  1156. help
  1157. Internal configuration node for common cpufreq on Samsung SoC
  1158. config CPU_FREQ_S3C24XX
  1159. bool "CPUfreq driver for Samsung S3C24XX series CPUs"
  1160. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1161. select CPU_FREQ_S3C
  1162. help
  1163. This enables the CPUfreq driver for the Samsung S3C24XX family
  1164. of CPUs.
  1165. For details, take a look at <file:Documentation/cpu-freq>.
  1166. If in doubt, say N.
  1167. config CPU_FREQ_S3C24XX_PLL
  1168. bool "Support CPUfreq changing of PLL frequency"
  1169. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1170. help
  1171. Compile in support for changing the PLL frequency from the
  1172. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1173. after a frequency change, so by default it is not enabled.
  1174. This also means that the PLL tables for the selected CPU(s) will
  1175. be built which may increase the size of the kernel image.
  1176. config CPU_FREQ_S3C24XX_DEBUG
  1177. bool "Debug CPUfreq Samsung driver core"
  1178. depends on CPU_FREQ_S3C24XX
  1179. help
  1180. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1181. config CPU_FREQ_S3C24XX_IODEBUG
  1182. bool "Debug CPUfreq Samsung driver IO timing"
  1183. depends on CPU_FREQ_S3C24XX
  1184. help
  1185. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1186. config CPU_FREQ_S3C24XX_DEBUGFS
  1187. bool "Export debugfs for CPUFreq"
  1188. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1189. help
  1190. Export status information via debugfs.
  1191. endif
  1192. source "drivers/cpuidle/Kconfig"
  1193. endmenu
  1194. menu "Floating point emulation"
  1195. comment "At least one emulation must be selected"
  1196. config FPE_NWFPE
  1197. bool "NWFPE math emulation"
  1198. depends on !AEABI || OABI_COMPAT
  1199. ---help---
  1200. Say Y to include the NWFPE floating point emulator in the kernel.
  1201. This is necessary to run most binaries. Linux does not currently
  1202. support floating point hardware so you need to say Y here even if
  1203. your machine has an FPA or floating point co-processor podule.
  1204. You may say N here if you are going to load the Acorn FPEmulator
  1205. early in the bootup.
  1206. config FPE_NWFPE_XP
  1207. bool "Support extended precision"
  1208. depends on FPE_NWFPE
  1209. help
  1210. Say Y to include 80-bit support in the kernel floating-point
  1211. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1212. Note that gcc does not generate 80-bit operations by default,
  1213. so in most cases this option only enlarges the size of the
  1214. floating point emulator without any good reason.
  1215. You almost surely want to say N here.
  1216. config FPE_FASTFPE
  1217. bool "FastFPE math emulation (EXPERIMENTAL)"
  1218. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1219. ---help---
  1220. Say Y here to include the FAST floating point emulator in the kernel.
  1221. This is an experimental much faster emulator which now also has full
  1222. precision for the mantissa. It does not support any exceptions.
  1223. It is very simple, and approximately 3-6 times faster than NWFPE.
  1224. It should be sufficient for most programs. It may be not suitable
  1225. for scientific calculations, but you have to check this for yourself.
  1226. If you do not feel you need a faster FP emulation you should better
  1227. choose NWFPE.
  1228. config VFP
  1229. bool "VFP-format floating point maths"
  1230. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1231. help
  1232. Say Y to include VFP support code in the kernel. This is needed
  1233. if your hardware includes a VFP unit.
  1234. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1235. release notes and additional status information.
  1236. Say N if your target does not have VFP hardware.
  1237. config VFPv3
  1238. bool
  1239. depends on VFP
  1240. default y if CPU_V7
  1241. config NEON
  1242. bool "Advanced SIMD (NEON) Extension support"
  1243. depends on VFPv3 && CPU_V7
  1244. help
  1245. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1246. Extension.
  1247. endmenu
  1248. menu "Userspace binary formats"
  1249. source "fs/Kconfig.binfmt"
  1250. config ARTHUR
  1251. tristate "RISC OS personality"
  1252. depends on !AEABI
  1253. help
  1254. Say Y here to include the kernel code necessary if you want to run
  1255. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1256. experimental; if this sounds frightening, say N and sleep in peace.
  1257. You can also say M here to compile this support as a module (which
  1258. will be called arthur).
  1259. endmenu
  1260. menu "Power management options"
  1261. source "kernel/power/Kconfig"
  1262. config ARCH_SUSPEND_POSSIBLE
  1263. def_bool y
  1264. endmenu
  1265. source "net/Kconfig"
  1266. source "drivers/Kconfig"
  1267. source "fs/Kconfig"
  1268. source "arch/arm/Kconfig.debug"
  1269. source "security/Kconfig"
  1270. source "crypto/Kconfig"
  1271. source "lib/Kconfig"