Kconfig 39 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_KIRKWOOD
  363. bool "Marvell Kirkwood"
  364. select CPU_FEROCEON
  365. select PCI
  366. select GENERIC_GPIO
  367. select ARCH_REQUIRE_GPIOLIB
  368. select GENERIC_TIME
  369. select GENERIC_CLOCKEVENTS
  370. select PLAT_ORION
  371. help
  372. Support for the following Marvell Kirkwood series SoCs:
  373. 88F6180, 88F6192 and 88F6281.
  374. config ARCH_LOKI
  375. bool "Marvell Loki (88RC8480)"
  376. select CPU_FEROCEON
  377. select GENERIC_TIME
  378. select GENERIC_CLOCKEVENTS
  379. select PLAT_ORION
  380. help
  381. Support for the Marvell Loki (88RC8480) SoC.
  382. config ARCH_MV78XX0
  383. bool "Marvell MV78xx0"
  384. select CPU_FEROCEON
  385. select PCI
  386. select GENERIC_GPIO
  387. select ARCH_REQUIRE_GPIOLIB
  388. select GENERIC_TIME
  389. select GENERIC_CLOCKEVENTS
  390. select PLAT_ORION
  391. help
  392. Support for the following Marvell MV78xx0 series SoCs:
  393. MV781x0, MV782x0.
  394. config ARCH_ORION5X
  395. bool "Marvell Orion"
  396. depends on MMU
  397. select CPU_FEROCEON
  398. select PCI
  399. select GENERIC_GPIO
  400. select ARCH_REQUIRE_GPIOLIB
  401. select GENERIC_TIME
  402. select GENERIC_CLOCKEVENTS
  403. select PLAT_ORION
  404. help
  405. Support for the following Marvell Orion 5x series SoCs:
  406. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  407. Orion-2 (5281), Orion-1-90 (6183).
  408. config ARCH_MMP
  409. bool "Marvell PXA168/910"
  410. depends on MMU
  411. select GENERIC_GPIO
  412. select ARCH_REQUIRE_GPIOLIB
  413. select HAVE_CLK
  414. select COMMON_CLKDEV
  415. select GENERIC_TIME
  416. select GENERIC_CLOCKEVENTS
  417. select TICK_ONESHOT
  418. select PLAT_PXA
  419. help
  420. Support for Marvell's PXA168/910 processor line.
  421. config ARCH_KS8695
  422. bool "Micrel/Kendin KS8695"
  423. select CPU_ARM922T
  424. select GENERIC_GPIO
  425. select ARCH_REQUIRE_GPIOLIB
  426. help
  427. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  428. System-on-Chip devices.
  429. config ARCH_NS9XXX
  430. bool "NetSilicon NS9xxx"
  431. select CPU_ARM926T
  432. select GENERIC_GPIO
  433. select GENERIC_TIME
  434. select GENERIC_CLOCKEVENTS
  435. select HAVE_CLK
  436. help
  437. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  438. System.
  439. <http://www.digi.com/products/microprocessors/index.jsp>
  440. config ARCH_W90X900
  441. bool "Nuvoton W90X900 CPU"
  442. select CPU_ARM926T
  443. select ARCH_REQUIRE_GPIOLIB
  444. select GENERIC_GPIO
  445. select HAVE_CLK
  446. select COMMON_CLKDEV
  447. select GENERIC_TIME
  448. select GENERIC_CLOCKEVENTS
  449. help
  450. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  451. At present, the w90x900 has been renamed nuc900, regarding
  452. the ARM series product line, you can login the following
  453. link address to know more.
  454. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  455. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  456. config ARCH_PNX4008
  457. bool "Philips Nexperia PNX4008 Mobile"
  458. select CPU_ARM926T
  459. select HAVE_CLK
  460. help
  461. This enables support for Philips PNX4008 mobile platform.
  462. config ARCH_PXA
  463. bool "PXA2xx/PXA3xx-based"
  464. depends on MMU
  465. select ARCH_MTD_XIP
  466. select ARCH_HAS_CPUFREQ
  467. select GENERIC_GPIO
  468. select HAVE_CLK
  469. select COMMON_CLKDEV
  470. select ARCH_REQUIRE_GPIOLIB
  471. select GENERIC_TIME
  472. select GENERIC_CLOCKEVENTS
  473. select TICK_ONESHOT
  474. select PLAT_PXA
  475. help
  476. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  477. config ARCH_MSM
  478. bool "Qualcomm MSM"
  479. select CPU_V6
  480. select GENERIC_TIME
  481. select GENERIC_CLOCKEVENTS
  482. help
  483. Support for Qualcomm MSM7K based systems. This runs on the ARM11
  484. apps processor of the MSM7K and depends on a shared memory
  485. interface to the ARM9 modem processor which runs the baseband stack
  486. and controls some vital subsystems (clock and power control, etc).
  487. config ARCH_RPC
  488. bool "RiscPC"
  489. select ARCH_ACORN
  490. select FIQ
  491. select TIMER_ACORN
  492. select ARCH_MAY_HAVE_PC_FDC
  493. select HAVE_PATA_PLATFORM
  494. select ISA_DMA_API
  495. select NO_IOPORT
  496. select ARCH_SPARSEMEM_ENABLE
  497. help
  498. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  499. CD-ROM interface, serial and parallel port, and the floppy drive.
  500. config ARCH_SA1100
  501. bool "SA1100-based"
  502. select CPU_SA1100
  503. select ISA
  504. select ARCH_SPARSEMEM_ENABLE
  505. select ARCH_MTD_XIP
  506. select ARCH_HAS_CPUFREQ
  507. select GENERIC_GPIO
  508. select GENERIC_TIME
  509. select GENERIC_CLOCKEVENTS
  510. select HAVE_CLK
  511. select TICK_ONESHOT
  512. select ARCH_REQUIRE_GPIOLIB
  513. help
  514. Support for StrongARM 11x0 based boards.
  515. config ARCH_S3C2410
  516. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  517. select GENERIC_GPIO
  518. select ARCH_HAS_CPUFREQ
  519. select HAVE_CLK
  520. help
  521. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  522. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  523. the Samsung SMDK2410 development board (and derivatives).
  524. config ARCH_S3C64XX
  525. bool "Samsung S3C64XX"
  526. select GENERIC_GPIO
  527. select HAVE_CLK
  528. select ARCH_HAS_CPUFREQ
  529. help
  530. Samsung S3C64XX series based systems
  531. config ARCH_S5PC1XX
  532. bool "Samsung S5PC1XX"
  533. select GENERIC_GPIO
  534. select HAVE_CLK
  535. select CPU_V7
  536. help
  537. Samsung S5PC1XX series based systems
  538. config ARCH_SHARK
  539. bool "Shark"
  540. select CPU_SA110
  541. select ISA
  542. select ISA_DMA
  543. select ZONE_DMA
  544. select PCI
  545. help
  546. Support for the StrongARM based Digital DNARD machine, also known
  547. as "Shark" (<http://www.shark-linux.de/shark.html>).
  548. config ARCH_LH7A40X
  549. bool "Sharp LH7A40X"
  550. select CPU_ARM922T
  551. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  552. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  553. help
  554. Say Y here for systems based on one of the Sharp LH7A40X
  555. System on a Chip processors. These CPUs include an ARM922T
  556. core with a wide array of integrated devices for
  557. hand-held and low-power applications.
  558. config ARCH_U300
  559. bool "ST-Ericsson U300 Series"
  560. depends on MMU
  561. select CPU_ARM926T
  562. select HAVE_TCM
  563. select ARM_AMBA
  564. select ARM_VIC
  565. select GENERIC_TIME
  566. select GENERIC_CLOCKEVENTS
  567. select HAVE_CLK
  568. select COMMON_CLKDEV
  569. select GENERIC_GPIO
  570. help
  571. Support for ST-Ericsson U300 series mobile platforms.
  572. config ARCH_DAVINCI
  573. bool "TI DaVinci"
  574. select CPU_ARM926T
  575. select GENERIC_TIME
  576. select GENERIC_CLOCKEVENTS
  577. select GENERIC_GPIO
  578. select ARCH_REQUIRE_GPIOLIB
  579. select HAVE_CLK
  580. select ZONE_DMA
  581. select HAVE_IDE
  582. select COMMON_CLKDEV
  583. select GENERIC_ALLOCATOR
  584. help
  585. Support for TI's DaVinci platform.
  586. config ARCH_OMAP
  587. bool "TI OMAP"
  588. select GENERIC_GPIO
  589. select HAVE_CLK
  590. select ARCH_REQUIRE_GPIOLIB
  591. select ARCH_HAS_CPUFREQ
  592. select GENERIC_TIME
  593. select GENERIC_CLOCKEVENTS
  594. help
  595. Support for TI's OMAP platform (OMAP1 and OMAP2).
  596. config ARCH_BCMRING
  597. bool "Broadcom BCMRING"
  598. depends on MMU
  599. select CPU_V6
  600. select ARM_AMBA
  601. select COMMON_CLKDEV
  602. select GENERIC_TIME
  603. select GENERIC_CLOCKEVENTS
  604. select ARCH_WANT_OPTIONAL_GPIOLIB
  605. help
  606. Support for Broadcom's BCMRing platform.
  607. endchoice
  608. source "arch/arm/mach-clps711x/Kconfig"
  609. source "arch/arm/mach-ep93xx/Kconfig"
  610. source "arch/arm/mach-footbridge/Kconfig"
  611. source "arch/arm/mach-gemini/Kconfig"
  612. source "arch/arm/mach-integrator/Kconfig"
  613. source "arch/arm/mach-iop32x/Kconfig"
  614. source "arch/arm/mach-iop33x/Kconfig"
  615. source "arch/arm/mach-iop13xx/Kconfig"
  616. source "arch/arm/mach-ixp4xx/Kconfig"
  617. source "arch/arm/mach-ixp2000/Kconfig"
  618. source "arch/arm/mach-ixp23xx/Kconfig"
  619. source "arch/arm/mach-loki/Kconfig"
  620. source "arch/arm/mach-mv78xx0/Kconfig"
  621. source "arch/arm/mach-pxa/Kconfig"
  622. source "arch/arm/plat-pxa/Kconfig"
  623. source "arch/arm/mach-mmp/Kconfig"
  624. source "arch/arm/mach-sa1100/Kconfig"
  625. source "arch/arm/plat-omap/Kconfig"
  626. source "arch/arm/mach-omap1/Kconfig"
  627. source "arch/arm/mach-omap2/Kconfig"
  628. source "arch/arm/mach-orion5x/Kconfig"
  629. source "arch/arm/mach-kirkwood/Kconfig"
  630. source "arch/arm/plat-s3c24xx/Kconfig"
  631. source "arch/arm/plat-s3c64xx/Kconfig"
  632. source "arch/arm/plat-s3c/Kconfig"
  633. source "arch/arm/plat-s5pc1xx/Kconfig"
  634. if ARCH_S3C2410
  635. source "arch/arm/mach-s3c2400/Kconfig"
  636. source "arch/arm/mach-s3c2410/Kconfig"
  637. source "arch/arm/mach-s3c2412/Kconfig"
  638. source "arch/arm/mach-s3c2440/Kconfig"
  639. source "arch/arm/mach-s3c2442/Kconfig"
  640. source "arch/arm/mach-s3c2443/Kconfig"
  641. endif
  642. if ARCH_S3C64XX
  643. source "arch/arm/mach-s3c6400/Kconfig"
  644. source "arch/arm/mach-s3c6410/Kconfig"
  645. endif
  646. source "arch/arm/plat-stmp3xxx/Kconfig"
  647. if ARCH_S5PC1XX
  648. source "arch/arm/mach-s5pc100/Kconfig"
  649. endif
  650. source "arch/arm/mach-lh7a40x/Kconfig"
  651. source "arch/arm/mach-h720x/Kconfig"
  652. source "arch/arm/mach-versatile/Kconfig"
  653. source "arch/arm/mach-aaec2000/Kconfig"
  654. source "arch/arm/mach-realview/Kconfig"
  655. source "arch/arm/mach-at91/Kconfig"
  656. source "arch/arm/plat-mxc/Kconfig"
  657. source "arch/arm/mach-nomadik/Kconfig"
  658. source "arch/arm/mach-netx/Kconfig"
  659. source "arch/arm/mach-ns9xxx/Kconfig"
  660. source "arch/arm/mach-davinci/Kconfig"
  661. source "arch/arm/mach-ks8695/Kconfig"
  662. source "arch/arm/mach-msm/Kconfig"
  663. source "arch/arm/mach-u300/Kconfig"
  664. source "arch/arm/mach-w90x900/Kconfig"
  665. source "arch/arm/mach-bcmring/Kconfig"
  666. # Definitions to make life easier
  667. config ARCH_ACORN
  668. bool
  669. config PLAT_IOP
  670. bool
  671. config PLAT_ORION
  672. bool
  673. config PLAT_PXA
  674. bool
  675. source arch/arm/mm/Kconfig
  676. config IWMMXT
  677. bool "Enable iWMMXt support"
  678. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
  679. default y if PXA27x || PXA3xx || ARCH_MMP
  680. help
  681. Enable support for iWMMXt context switching at run time if
  682. running on a CPU that supports it.
  683. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  684. config XSCALE_PMU
  685. bool
  686. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  687. default y
  688. if !MMU
  689. source "arch/arm/Kconfig-nommu"
  690. endif
  691. config ARM_ERRATA_411920
  692. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  693. depends on CPU_V6 && !SMP
  694. help
  695. Invalidation of the Instruction Cache operation can
  696. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  697. It does not affect the MPCore. This option enables the ARM Ltd.
  698. recommended workaround.
  699. config ARM_ERRATA_430973
  700. bool "ARM errata: Stale prediction on replaced interworking branch"
  701. depends on CPU_V7
  702. help
  703. This option enables the workaround for the 430973 Cortex-A8
  704. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  705. interworking branch is replaced with another code sequence at the
  706. same virtual address, whether due to self-modifying code or virtual
  707. to physical address re-mapping, Cortex-A8 does not recover from the
  708. stale interworking branch prediction. This results in Cortex-A8
  709. executing the new code sequence in the incorrect ARM or Thumb state.
  710. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  711. and also flushes the branch target cache at every context switch.
  712. Note that setting specific bits in the ACTLR register may not be
  713. available in non-secure mode.
  714. config ARM_ERRATA_458693
  715. bool "ARM errata: Processor deadlock when a false hazard is created"
  716. depends on CPU_V7
  717. help
  718. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  719. erratum. For very specific sequences of memory operations, it is
  720. possible for a hazard condition intended for a cache line to instead
  721. be incorrectly associated with a different cache line. This false
  722. hazard might then cause a processor deadlock. The workaround enables
  723. the L1 caching of the NEON accesses and disables the PLD instruction
  724. in the ACTLR register. Note that setting specific bits in the ACTLR
  725. register may not be available in non-secure mode.
  726. config ARM_ERRATA_460075
  727. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  728. depends on CPU_V7
  729. help
  730. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  731. erratum. Any asynchronous access to the L2 cache may encounter a
  732. situation in which recent store transactions to the L2 cache are lost
  733. and overwritten with stale memory contents from external memory. The
  734. workaround disables the write-allocate mode for the L2 cache via the
  735. ACTLR register. Note that setting specific bits in the ACTLR register
  736. may not be available in non-secure mode.
  737. endmenu
  738. source "arch/arm/common/Kconfig"
  739. config FORCE_MAX_ZONEORDER
  740. int
  741. depends on SA1111
  742. default "9"
  743. menu "Bus support"
  744. config ARM_AMBA
  745. bool
  746. config ISA
  747. bool
  748. help
  749. Find out whether you have ISA slots on your motherboard. ISA is the
  750. name of a bus system, i.e. the way the CPU talks to the other stuff
  751. inside your box. Other bus systems are PCI, EISA, MicroChannel
  752. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  753. newer boards don't support it. If you have ISA, say Y, otherwise N.
  754. # Select ISA DMA controller support
  755. config ISA_DMA
  756. bool
  757. select ISA_DMA_API
  758. # Select ISA DMA interface
  759. config ISA_DMA_API
  760. bool
  761. config PCI
  762. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  763. help
  764. Find out whether you have a PCI motherboard. PCI is the name of a
  765. bus system, i.e. the way the CPU talks to the other stuff inside
  766. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  767. VESA. If you have PCI, say Y, otherwise N.
  768. config PCI_SYSCALL
  769. def_bool PCI
  770. # Select the host bridge type
  771. config PCI_HOST_VIA82C505
  772. bool
  773. depends on PCI && ARCH_SHARK
  774. default y
  775. config PCI_HOST_ITE8152
  776. bool
  777. depends on PCI && MACH_ARMCORE
  778. default y
  779. select DMABOUNCE
  780. source "drivers/pci/Kconfig"
  781. source "drivers/pcmcia/Kconfig"
  782. endmenu
  783. menu "Kernel Features"
  784. source "kernel/time/Kconfig"
  785. config SMP
  786. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  787. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
  788. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
  789. depends on GENERIC_CLOCKEVENTS
  790. select USE_GENERIC_SMP_HELPERS
  791. select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4)
  792. help
  793. This enables support for systems with more than one CPU. If you have
  794. a system with only one CPU, like most personal computers, say N. If
  795. you have a system with more than one CPU, say Y.
  796. If you say N here, the kernel will run on single and multiprocessor
  797. machines, but will use only one CPU of a multiprocessor machine. If
  798. you say Y here, the kernel will run on many, but not all, single
  799. processor machines. On a single processor machine, the kernel will
  800. run faster if you say N here.
  801. See also <file:Documentation/i386/IO-APIC.txt>,
  802. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  803. <http://www.linuxdoc.org/docs.html#howto>.
  804. If you don't know what to do here, say N.
  805. config HAVE_ARM_SCU
  806. bool
  807. depends on SMP
  808. help
  809. This option enables support for the ARM system coherency unit
  810. config HAVE_ARM_TWD
  811. bool
  812. depends on SMP
  813. help
  814. This options enables support for the ARM timer and watchdog unit
  815. choice
  816. prompt "Memory split"
  817. default VMSPLIT_3G
  818. help
  819. Select the desired split between kernel and user memory.
  820. If you are not absolutely sure what you are doing, leave this
  821. option alone!
  822. config VMSPLIT_3G
  823. bool "3G/1G user/kernel split"
  824. config VMSPLIT_2G
  825. bool "2G/2G user/kernel split"
  826. config VMSPLIT_1G
  827. bool "1G/3G user/kernel split"
  828. endchoice
  829. config PAGE_OFFSET
  830. hex
  831. default 0x40000000 if VMSPLIT_1G
  832. default 0x80000000 if VMSPLIT_2G
  833. default 0xC0000000
  834. config NR_CPUS
  835. int "Maximum number of CPUs (2-32)"
  836. range 2 32
  837. depends on SMP
  838. default "4"
  839. config HOTPLUG_CPU
  840. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  841. depends on SMP && HOTPLUG && EXPERIMENTAL
  842. help
  843. Say Y here to experiment with turning CPUs off and on. CPUs
  844. can be controlled through /sys/devices/system/cpu.
  845. config LOCAL_TIMERS
  846. bool "Use local timer interrupts"
  847. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
  848. REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
  849. default y
  850. select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4)
  851. help
  852. Enable support for local timers on SMP platforms, rather then the
  853. legacy IPI broadcast method. Local timers allows the system
  854. accounting to be spread across the timer interval, preventing a
  855. "thundering herd" at every timer tick.
  856. source kernel/Kconfig.preempt
  857. config HZ
  858. int
  859. default 128 if ARCH_L7200
  860. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  861. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  862. default AT91_TIMER_HZ if ARCH_AT91
  863. default 100
  864. config THUMB2_KERNEL
  865. bool "Compile the kernel in Thumb-2 mode"
  866. depends on CPU_V7 && EXPERIMENTAL
  867. select AEABI
  868. select ARM_ASM_UNIFIED
  869. help
  870. By enabling this option, the kernel will be compiled in
  871. Thumb-2 mode. A compiler/assembler that understand the unified
  872. ARM-Thumb syntax is needed.
  873. If unsure, say N.
  874. config ARM_ASM_UNIFIED
  875. bool
  876. config AEABI
  877. bool "Use the ARM EABI to compile the kernel"
  878. help
  879. This option allows for the kernel to be compiled using the latest
  880. ARM ABI (aka EABI). This is only useful if you are using a user
  881. space environment that is also compiled with EABI.
  882. Since there are major incompatibilities between the legacy ABI and
  883. EABI, especially with regard to structure member alignment, this
  884. option also changes the kernel syscall calling convention to
  885. disambiguate both ABIs and allow for backward compatibility support
  886. (selected with CONFIG_OABI_COMPAT).
  887. To use this you need GCC version 4.0.0 or later.
  888. config OABI_COMPAT
  889. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  890. depends on AEABI && EXPERIMENTAL
  891. default y
  892. help
  893. This option preserves the old syscall interface along with the
  894. new (ARM EABI) one. It also provides a compatibility layer to
  895. intercept syscalls that have structure arguments which layout
  896. in memory differs between the legacy ABI and the new ARM EABI
  897. (only for non "thumb" binaries). This option adds a tiny
  898. overhead to all syscalls and produces a slightly larger kernel.
  899. If you know you'll be using only pure EABI user space then you
  900. can say N here. If this option is not selected and you attempt
  901. to execute a legacy ABI binary then the result will be
  902. UNPREDICTABLE (in fact it can be predicted that it won't work
  903. at all). If in doubt say Y.
  904. config ARCH_HAS_HOLES_MEMORYMODEL
  905. bool
  906. # Discontigmem is deprecated
  907. config ARCH_DISCONTIGMEM_ENABLE
  908. bool
  909. config ARCH_SPARSEMEM_ENABLE
  910. bool
  911. config ARCH_SPARSEMEM_DEFAULT
  912. def_bool ARCH_SPARSEMEM_ENABLE
  913. config ARCH_SELECT_MEMORY_MODEL
  914. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  915. config NODES_SHIFT
  916. int
  917. default "4" if ARCH_LH7A40X
  918. default "2"
  919. depends on NEED_MULTIPLE_NODES
  920. config HIGHMEM
  921. bool "High Memory Support (EXPERIMENTAL)"
  922. depends on MMU && EXPERIMENTAL
  923. help
  924. The address space of ARM processors is only 4 Gigabytes large
  925. and it has to accommodate user address space, kernel address
  926. space as well as some memory mapped IO. That means that, if you
  927. have a large amount of physical memory and/or IO, not all of the
  928. memory can be "permanently mapped" by the kernel. The physical
  929. memory that is not permanently mapped is called "high memory".
  930. Depending on the selected kernel/user memory split, minimum
  931. vmalloc space and actual amount of RAM, you may not need this
  932. option which should result in a slightly faster kernel.
  933. If unsure, say n.
  934. config HIGHPTE
  935. bool "Allocate 2nd-level pagetables from highmem"
  936. depends on HIGHMEM
  937. depends on !OUTER_CACHE
  938. source "mm/Kconfig"
  939. config LEDS
  940. bool "Timer and CPU usage LEDs"
  941. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  942. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  943. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  944. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  945. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  946. ARCH_AT91 || ARCH_DAVINCI || \
  947. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  948. help
  949. If you say Y here, the LEDs on your machine will be used
  950. to provide useful information about your current system status.
  951. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  952. be able to select which LEDs are active using the options below. If
  953. you are compiling a kernel for the EBSA-110 or the LART however, the
  954. red LED will simply flash regularly to indicate that the system is
  955. still functional. It is safe to say Y here if you have a CATS
  956. system, but the driver will do nothing.
  957. config LEDS_TIMER
  958. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  959. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  960. || MACH_OMAP_PERSEUS2
  961. depends on LEDS
  962. depends on !GENERIC_CLOCKEVENTS
  963. default y if ARCH_EBSA110
  964. help
  965. If you say Y here, one of the system LEDs (the green one on the
  966. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  967. will flash regularly to indicate that the system is still
  968. operational. This is mainly useful to kernel hackers who are
  969. debugging unstable kernels.
  970. The LART uses the same LED for both Timer LED and CPU usage LED
  971. functions. You may choose to use both, but the Timer LED function
  972. will overrule the CPU usage LED.
  973. config LEDS_CPU
  974. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  975. !ARCH_OMAP) \
  976. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  977. || MACH_OMAP_PERSEUS2
  978. depends on LEDS
  979. help
  980. If you say Y here, the red LED will be used to give a good real
  981. time indication of CPU usage, by lighting whenever the idle task
  982. is not currently executing.
  983. The LART uses the same LED for both Timer LED and CPU usage LED
  984. functions. You may choose to use both, but the Timer LED function
  985. will overrule the CPU usage LED.
  986. config ALIGNMENT_TRAP
  987. bool
  988. depends on CPU_CP15_MMU
  989. default y if !ARCH_EBSA110
  990. help
  991. ARM processors cannot fetch/store information which is not
  992. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  993. address divisible by 4. On 32-bit ARM processors, these non-aligned
  994. fetch/store instructions will be emulated in software if you say
  995. here, which has a severe performance impact. This is necessary for
  996. correct operation of some network protocols. With an IP-only
  997. configuration it is safe to say N, otherwise say Y.
  998. config UACCESS_WITH_MEMCPY
  999. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1000. depends on MMU && EXPERIMENTAL
  1001. default y if CPU_FEROCEON
  1002. help
  1003. Implement faster copy_to_user and clear_user methods for CPU
  1004. cores where a 8-word STM instruction give significantly higher
  1005. memory write throughput than a sequence of individual 32bit stores.
  1006. A possible side effect is a slight increase in scheduling latency
  1007. between threads sharing the same address space if they invoke
  1008. such copy operations with large buffers.
  1009. However, if the CPU data cache is using a write-allocate mode,
  1010. this option is unlikely to provide any performance gain.
  1011. endmenu
  1012. menu "Boot options"
  1013. # Compressed boot loader in ROM. Yes, we really want to ask about
  1014. # TEXT and BSS so we preserve their values in the config files.
  1015. config ZBOOT_ROM_TEXT
  1016. hex "Compressed ROM boot loader base address"
  1017. default "0"
  1018. help
  1019. The physical address at which the ROM-able zImage is to be
  1020. placed in the target. Platforms which normally make use of
  1021. ROM-able zImage formats normally set this to a suitable
  1022. value in their defconfig file.
  1023. If ZBOOT_ROM is not enabled, this has no effect.
  1024. config ZBOOT_ROM_BSS
  1025. hex "Compressed ROM boot loader BSS address"
  1026. default "0"
  1027. help
  1028. The base address of an area of read/write memory in the target
  1029. for the ROM-able zImage which must be available while the
  1030. decompressor is running. It must be large enough to hold the
  1031. entire decompressed kernel plus an additional 128 KiB.
  1032. Platforms which normally make use of ROM-able zImage formats
  1033. normally set this to a suitable value in their defconfig file.
  1034. If ZBOOT_ROM is not enabled, this has no effect.
  1035. config ZBOOT_ROM
  1036. bool "Compressed boot loader in ROM/flash"
  1037. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1038. help
  1039. Say Y here if you intend to execute your compressed kernel image
  1040. (zImage) directly from ROM or flash. If unsure, say N.
  1041. config CMDLINE
  1042. string "Default kernel command string"
  1043. default ""
  1044. help
  1045. On some architectures (EBSA110 and CATS), there is currently no way
  1046. for the boot loader to pass arguments to the kernel. For these
  1047. architectures, you should supply some command-line options at build
  1048. time by entering them here. As a minimum, you should specify the
  1049. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1050. config XIP_KERNEL
  1051. bool "Kernel Execute-In-Place from ROM"
  1052. depends on !ZBOOT_ROM
  1053. help
  1054. Execute-In-Place allows the kernel to run from non-volatile storage
  1055. directly addressable by the CPU, such as NOR flash. This saves RAM
  1056. space since the text section of the kernel is not loaded from flash
  1057. to RAM. Read-write sections, such as the data section and stack,
  1058. are still copied to RAM. The XIP kernel is not compressed since
  1059. it has to run directly from flash, so it will take more space to
  1060. store it. The flash address used to link the kernel object files,
  1061. and for storing it, is configuration dependent. Therefore, if you
  1062. say Y here, you must know the proper physical address where to
  1063. store the kernel image depending on your own flash memory usage.
  1064. Also note that the make target becomes "make xipImage" rather than
  1065. "make zImage" or "make Image". The final kernel binary to put in
  1066. ROM memory will be arch/arm/boot/xipImage.
  1067. If unsure, say N.
  1068. config XIP_PHYS_ADDR
  1069. hex "XIP Kernel Physical Location"
  1070. depends on XIP_KERNEL
  1071. default "0x00080000"
  1072. help
  1073. This is the physical address in your flash memory the kernel will
  1074. be linked for and stored to. This address is dependent on your
  1075. own flash usage.
  1076. config KEXEC
  1077. bool "Kexec system call (EXPERIMENTAL)"
  1078. depends on EXPERIMENTAL
  1079. help
  1080. kexec is a system call that implements the ability to shutdown your
  1081. current kernel, and to start another kernel. It is like a reboot
  1082. but it is independent of the system firmware. And like a reboot
  1083. you can start any kernel with it, not just Linux.
  1084. It is an ongoing process to be certain the hardware in a machine
  1085. is properly shutdown, so do not be surprised if this code does not
  1086. initially work for you. It may help to enable device hotplugging
  1087. support.
  1088. config ATAGS_PROC
  1089. bool "Export atags in procfs"
  1090. depends on KEXEC
  1091. default y
  1092. help
  1093. Should the atags used to boot the kernel be exported in an "atags"
  1094. file in procfs. Useful with kexec.
  1095. endmenu
  1096. menu "CPU Power Management"
  1097. if ARCH_HAS_CPUFREQ
  1098. source "drivers/cpufreq/Kconfig"
  1099. config CPU_FREQ_SA1100
  1100. bool
  1101. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  1102. default y
  1103. config CPU_FREQ_SA1110
  1104. bool
  1105. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  1106. default y
  1107. config CPU_FREQ_INTEGRATOR
  1108. tristate "CPUfreq driver for ARM Integrator CPUs"
  1109. depends on ARCH_INTEGRATOR && CPU_FREQ
  1110. default y
  1111. help
  1112. This enables the CPUfreq driver for ARM Integrator CPUs.
  1113. For details, take a look at <file:Documentation/cpu-freq>.
  1114. If in doubt, say Y.
  1115. config CPU_FREQ_PXA
  1116. bool
  1117. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1118. default y
  1119. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1120. config CPU_FREQ_S3C64XX
  1121. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1122. depends on CPU_FREQ && CPU_S3C6410
  1123. config CPU_FREQ_S3C
  1124. bool
  1125. help
  1126. Internal configuration node for common cpufreq on Samsung SoC
  1127. config CPU_FREQ_S3C24XX
  1128. bool "CPUfreq driver for Samsung S3C24XX series CPUs"
  1129. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1130. select CPU_FREQ_S3C
  1131. help
  1132. This enables the CPUfreq driver for the Samsung S3C24XX family
  1133. of CPUs.
  1134. For details, take a look at <file:Documentation/cpu-freq>.
  1135. If in doubt, say N.
  1136. config CPU_FREQ_S3C24XX_PLL
  1137. bool "Support CPUfreq changing of PLL frequency"
  1138. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1139. help
  1140. Compile in support for changing the PLL frequency from the
  1141. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1142. after a frequency change, so by default it is not enabled.
  1143. This also means that the PLL tables for the selected CPU(s) will
  1144. be built which may increase the size of the kernel image.
  1145. config CPU_FREQ_S3C24XX_DEBUG
  1146. bool "Debug CPUfreq Samsung driver core"
  1147. depends on CPU_FREQ_S3C24XX
  1148. help
  1149. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1150. config CPU_FREQ_S3C24XX_IODEBUG
  1151. bool "Debug CPUfreq Samsung driver IO timing"
  1152. depends on CPU_FREQ_S3C24XX
  1153. help
  1154. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1155. config CPU_FREQ_S3C24XX_DEBUGFS
  1156. bool "Export debugfs for CPUFreq"
  1157. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1158. help
  1159. Export status information via debugfs.
  1160. endif
  1161. source "drivers/cpuidle/Kconfig"
  1162. endmenu
  1163. menu "Floating point emulation"
  1164. comment "At least one emulation must be selected"
  1165. config FPE_NWFPE
  1166. bool "NWFPE math emulation"
  1167. depends on !AEABI || OABI_COMPAT
  1168. ---help---
  1169. Say Y to include the NWFPE floating point emulator in the kernel.
  1170. This is necessary to run most binaries. Linux does not currently
  1171. support floating point hardware so you need to say Y here even if
  1172. your machine has an FPA or floating point co-processor podule.
  1173. You may say N here if you are going to load the Acorn FPEmulator
  1174. early in the bootup.
  1175. config FPE_NWFPE_XP
  1176. bool "Support extended precision"
  1177. depends on FPE_NWFPE
  1178. help
  1179. Say Y to include 80-bit support in the kernel floating-point
  1180. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1181. Note that gcc does not generate 80-bit operations by default,
  1182. so in most cases this option only enlarges the size of the
  1183. floating point emulator without any good reason.
  1184. You almost surely want to say N here.
  1185. config FPE_FASTFPE
  1186. bool "FastFPE math emulation (EXPERIMENTAL)"
  1187. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1188. ---help---
  1189. Say Y here to include the FAST floating point emulator in the kernel.
  1190. This is an experimental much faster emulator which now also has full
  1191. precision for the mantissa. It does not support any exceptions.
  1192. It is very simple, and approximately 3-6 times faster than NWFPE.
  1193. It should be sufficient for most programs. It may be not suitable
  1194. for scientific calculations, but you have to check this for yourself.
  1195. If you do not feel you need a faster FP emulation you should better
  1196. choose NWFPE.
  1197. config VFP
  1198. bool "VFP-format floating point maths"
  1199. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1200. help
  1201. Say Y to include VFP support code in the kernel. This is needed
  1202. if your hardware includes a VFP unit.
  1203. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1204. release notes and additional status information.
  1205. Say N if your target does not have VFP hardware.
  1206. config VFPv3
  1207. bool
  1208. depends on VFP
  1209. default y if CPU_V7
  1210. config NEON
  1211. bool "Advanced SIMD (NEON) Extension support"
  1212. depends on VFPv3 && CPU_V7
  1213. help
  1214. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1215. Extension.
  1216. endmenu
  1217. menu "Userspace binary formats"
  1218. source "fs/Kconfig.binfmt"
  1219. config ARTHUR
  1220. tristate "RISC OS personality"
  1221. depends on !AEABI
  1222. help
  1223. Say Y here to include the kernel code necessary if you want to run
  1224. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1225. experimental; if this sounds frightening, say N and sleep in peace.
  1226. You can also say M here to compile this support as a module (which
  1227. will be called arthur).
  1228. endmenu
  1229. menu "Power management options"
  1230. source "kernel/power/Kconfig"
  1231. config ARCH_SUSPEND_POSSIBLE
  1232. def_bool y
  1233. endmenu
  1234. source "net/Kconfig"
  1235. source "drivers/Kconfig"
  1236. source "fs/Kconfig"
  1237. source "arch/arm/Kconfig.debug"
  1238. source "security/Kconfig"
  1239. source "crypto/Kconfig"
  1240. source "lib/Kconfig"