Kconfig 41 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. select HAVE_KERNEL_GZIP
  20. select HAVE_KERNEL_LZO
  21. help
  22. The ARM series is a line of low-power-consumption RISC chip designs
  23. licensed by ARM Ltd and targeted at embedded applications and
  24. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  25. manufactured, but legacy ARM-based PC hardware remains popular in
  26. Europe. There is an ARM Linux project with a web page at
  27. <http://www.arm.linux.org.uk/>.
  28. config HAVE_PWM
  29. bool
  30. config SYS_SUPPORTS_APM_EMULATION
  31. bool
  32. config GENERIC_GPIO
  33. bool
  34. config GENERIC_TIME
  35. bool
  36. config GENERIC_CLOCKEVENTS
  37. bool
  38. config GENERIC_CLOCKEVENTS_BROADCAST
  39. bool
  40. depends on GENERIC_CLOCKEVENTS
  41. default y if SMP && !LOCAL_TIMERS
  42. config HAVE_TCM
  43. bool
  44. select GENERIC_ALLOCATOR
  45. config NO_IOPORT
  46. bool
  47. config EISA
  48. bool
  49. ---help---
  50. The Extended Industry Standard Architecture (EISA) bus was
  51. developed as an open alternative to the IBM MicroChannel bus.
  52. The EISA bus provided some of the features of the IBM MicroChannel
  53. bus while maintaining backward compatibility with cards made for
  54. the older ISA bus. The EISA bus saw limited use between 1988 and
  55. 1995 when it was made obsolete by the PCI bus.
  56. Say Y here if you are building a kernel for an EISA-based machine.
  57. Otherwise, say N.
  58. config SBUS
  59. bool
  60. config MCA
  61. bool
  62. help
  63. MicroChannel Architecture is found in some IBM PS/2 machines and
  64. laptops. It is a bus system similar to PCI or ISA. See
  65. <file:Documentation/mca.txt> (and especially the web page given
  66. there) before attempting to build an MCA bus kernel.
  67. config GENERIC_HARDIRQS
  68. bool
  69. default y
  70. config STACKTRACE_SUPPORT
  71. bool
  72. default y
  73. config HAVE_LATENCYTOP_SUPPORT
  74. bool
  75. depends on !SMP
  76. default y
  77. config LOCKDEP_SUPPORT
  78. bool
  79. default y
  80. config TRACE_IRQFLAGS_SUPPORT
  81. bool
  82. default y
  83. config HARDIRQS_SW_RESEND
  84. bool
  85. default y
  86. config GENERIC_IRQ_PROBE
  87. bool
  88. default y
  89. config GENERIC_LOCKBREAK
  90. bool
  91. default y
  92. depends on SMP && PREEMPT
  93. config RWSEM_GENERIC_SPINLOCK
  94. bool
  95. default y
  96. config RWSEM_XCHGADD_ALGORITHM
  97. bool
  98. config ARCH_HAS_ILOG2_U32
  99. bool
  100. config ARCH_HAS_ILOG2_U64
  101. bool
  102. config ARCH_HAS_CPUFREQ
  103. bool
  104. help
  105. Internal node to signify that the ARCH has CPUFREQ support
  106. and that the relevant menu configurations are displayed for
  107. it.
  108. config GENERIC_HWEIGHT
  109. bool
  110. default y
  111. config GENERIC_CALIBRATE_DELAY
  112. bool
  113. default y
  114. config ARCH_MAY_HAVE_PC_FDC
  115. bool
  116. config ZONE_DMA
  117. bool
  118. config GENERIC_ISA_DMA
  119. bool
  120. config FIQ
  121. bool
  122. config ARCH_MTD_XIP
  123. bool
  124. config GENERIC_HARDIRQS_NO__DO_IRQ
  125. def_bool y
  126. if OPROFILE
  127. config OPROFILE_ARMV6
  128. def_bool y
  129. depends on CPU_V6 && !SMP
  130. select OPROFILE_ARM11_CORE
  131. config OPROFILE_MPCORE
  132. def_bool y
  133. depends on CPU_V6 && SMP
  134. select OPROFILE_ARM11_CORE
  135. config OPROFILE_ARM11_CORE
  136. bool
  137. config OPROFILE_ARMV7
  138. def_bool y
  139. depends on CPU_V7 && !SMP
  140. bool
  141. endif
  142. config VECTORS_BASE
  143. hex
  144. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  145. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  146. default 0x00000000
  147. help
  148. The base address of exception vectors.
  149. source "init/Kconfig"
  150. source "kernel/Kconfig.freezer"
  151. menu "System Type"
  152. config MMU
  153. bool "MMU-based Paged Memory Management Support"
  154. default y
  155. help
  156. Select if you want MMU-based virtualised addressing space
  157. support by paged memory management. If unsure, say 'Y'.
  158. choice
  159. prompt "ARM system type"
  160. default ARCH_VERSATILE
  161. config ARCH_AAEC2000
  162. bool "Agilent AAEC-2000 based"
  163. select CPU_ARM920T
  164. select ARM_AMBA
  165. select HAVE_CLK
  166. help
  167. This enables support for systems based on the Agilent AAEC-2000
  168. config ARCH_INTEGRATOR
  169. bool "ARM Ltd. Integrator family"
  170. select ARM_AMBA
  171. select ARCH_HAS_CPUFREQ
  172. select HAVE_CLK
  173. select COMMON_CLKDEV
  174. select ICST525
  175. help
  176. Support for ARM's Integrator platform.
  177. config ARCH_REALVIEW
  178. bool "ARM Ltd. RealView family"
  179. select ARM_AMBA
  180. select HAVE_CLK
  181. select COMMON_CLKDEV
  182. select ICST307
  183. select GENERIC_TIME
  184. select GENERIC_CLOCKEVENTS
  185. select ARCH_WANT_OPTIONAL_GPIOLIB
  186. help
  187. This enables support for ARM Ltd RealView boards.
  188. config ARCH_VERSATILE
  189. bool "ARM Ltd. Versatile family"
  190. select ARM_AMBA
  191. select ARM_VIC
  192. select HAVE_CLK
  193. select COMMON_CLKDEV
  194. select ICST307
  195. select GENERIC_TIME
  196. select GENERIC_CLOCKEVENTS
  197. select ARCH_WANT_OPTIONAL_GPIOLIB
  198. help
  199. This enables support for ARM Ltd Versatile board.
  200. config ARCH_AT91
  201. bool "Atmel AT91"
  202. select GENERIC_GPIO
  203. select ARCH_REQUIRE_GPIOLIB
  204. select HAVE_CLK
  205. help
  206. This enables support for systems based on the Atmel AT91RM9200,
  207. AT91SAM9 and AT91CAP9 processors.
  208. config ARCH_CLPS711X
  209. bool "Cirrus Logic CLPS711x/EP721x-based"
  210. select CPU_ARM720T
  211. help
  212. Support for Cirrus Logic 711x/721x based boards.
  213. config ARCH_GEMINI
  214. bool "Cortina Systems Gemini"
  215. select CPU_FA526
  216. select GENERIC_GPIO
  217. select ARCH_REQUIRE_GPIOLIB
  218. help
  219. Support for the Cortina Systems Gemini family SoCs
  220. config ARCH_EBSA110
  221. bool "EBSA-110"
  222. select CPU_SA110
  223. select ISA
  224. select NO_IOPORT
  225. help
  226. This is an evaluation board for the StrongARM processor available
  227. from Digital. It has limited hardware on-board, including an
  228. Ethernet interface, two PCMCIA sockets, two serial ports and a
  229. parallel port.
  230. config ARCH_EP93XX
  231. bool "EP93xx-based"
  232. select CPU_ARM920T
  233. select ARM_AMBA
  234. select ARM_VIC
  235. select GENERIC_GPIO
  236. select HAVE_CLK
  237. select COMMON_CLKDEV
  238. select ARCH_REQUIRE_GPIOLIB
  239. select ARCH_HAS_HOLES_MEMORYMODEL
  240. help
  241. This enables support for the Cirrus EP93xx series of CPUs.
  242. config ARCH_FOOTBRIDGE
  243. bool "FootBridge"
  244. select CPU_SA110
  245. select FOOTBRIDGE
  246. help
  247. Support for systems based on the DC21285 companion chip
  248. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  249. config ARCH_MXC
  250. bool "Freescale MXC/iMX-based"
  251. select GENERIC_TIME
  252. select GENERIC_CLOCKEVENTS
  253. select ARCH_REQUIRE_GPIOLIB
  254. select HAVE_CLK
  255. select COMMON_CLKDEV
  256. help
  257. Support for Freescale MXC/iMX-based family of processors
  258. config ARCH_STMP3XXX
  259. bool "Freescale STMP3xxx"
  260. select CPU_ARM926T
  261. select HAVE_CLK
  262. select COMMON_CLKDEV
  263. select ARCH_REQUIRE_GPIOLIB
  264. select GENERIC_TIME
  265. select GENERIC_CLOCKEVENTS
  266. select GENERIC_GPIO
  267. select USB_ARCH_HAS_EHCI
  268. help
  269. Support for systems based on the Freescale 3xxx CPUs.
  270. config ARCH_NETX
  271. bool "Hilscher NetX based"
  272. select CPU_ARM926T
  273. select ARM_VIC
  274. select GENERIC_CLOCKEVENTS
  275. select GENERIC_TIME
  276. help
  277. This enables support for systems based on the Hilscher NetX Soc
  278. config ARCH_H720X
  279. bool "Hynix HMS720x-based"
  280. select CPU_ARM720T
  281. select ISA_DMA_API
  282. help
  283. This enables support for systems based on the Hynix HMS720x
  284. config ARCH_NOMADIK
  285. bool "STMicroelectronics Nomadik"
  286. select ARM_AMBA
  287. select ARM_VIC
  288. select CPU_ARM926T
  289. select HAVE_CLK
  290. select COMMON_CLKDEV
  291. select GENERIC_TIME
  292. select GENERIC_CLOCKEVENTS
  293. select GENERIC_GPIO
  294. select ARCH_REQUIRE_GPIOLIB
  295. help
  296. Support for the Nomadik platform by ST-Ericsson
  297. config ARCH_IOP13XX
  298. bool "IOP13xx-based"
  299. depends on MMU
  300. select CPU_XSC3
  301. select PLAT_IOP
  302. select PCI
  303. select ARCH_SUPPORTS_MSI
  304. select VMSPLIT_1G
  305. help
  306. Support for Intel's IOP13XX (XScale) family of processors.
  307. config ARCH_IOP32X
  308. bool "IOP32x-based"
  309. depends on MMU
  310. select CPU_XSCALE
  311. select PLAT_IOP
  312. select PCI
  313. select GENERIC_GPIO
  314. select ARCH_REQUIRE_GPIOLIB
  315. help
  316. Support for Intel's 80219 and IOP32X (XScale) family of
  317. processors.
  318. config ARCH_IOP33X
  319. bool "IOP33x-based"
  320. depends on MMU
  321. select CPU_XSCALE
  322. select PLAT_IOP
  323. select PCI
  324. select GENERIC_GPIO
  325. select ARCH_REQUIRE_GPIOLIB
  326. help
  327. Support for Intel's IOP33X (XScale) family of processors.
  328. config ARCH_IXP23XX
  329. bool "IXP23XX-based"
  330. depends on MMU
  331. select CPU_XSC3
  332. select PCI
  333. help
  334. Support for Intel's IXP23xx (XScale) family of processors.
  335. config ARCH_IXP2000
  336. bool "IXP2400/2800-based"
  337. depends on MMU
  338. select CPU_XSCALE
  339. select PCI
  340. help
  341. Support for Intel's IXP2400/2800 (XScale) family of processors.
  342. config ARCH_IXP4XX
  343. bool "IXP4xx-based"
  344. depends on MMU
  345. select CPU_XSCALE
  346. select GENERIC_GPIO
  347. select GENERIC_TIME
  348. select GENERIC_CLOCKEVENTS
  349. select DMABOUNCE if PCI
  350. help
  351. Support for Intel's IXP4XX (XScale) family of processors.
  352. config ARCH_L7200
  353. bool "LinkUp-L7200"
  354. select CPU_ARM720T
  355. select FIQ
  356. help
  357. Say Y here if you intend to run this kernel on a LinkUp Systems
  358. L7200 Software Development Board which uses an ARM720T processor.
  359. Information on this board can be obtained at:
  360. <http://www.linkupsys.com/>
  361. If you have any questions or comments about the Linux kernel port
  362. to this board, send e-mail to <sjhill@cotw.com>.
  363. config ARCH_DOVE
  364. bool "Marvell Dove"
  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 Marvell Dove SoC 88AP510
  373. config ARCH_KIRKWOOD
  374. bool "Marvell Kirkwood"
  375. select CPU_FEROCEON
  376. select PCI
  377. select GENERIC_GPIO
  378. select ARCH_REQUIRE_GPIOLIB
  379. select GENERIC_TIME
  380. select GENERIC_CLOCKEVENTS
  381. select PLAT_ORION
  382. help
  383. Support for the following Marvell Kirkwood series SoCs:
  384. 88F6180, 88F6192 and 88F6281.
  385. config ARCH_LOKI
  386. bool "Marvell Loki (88RC8480)"
  387. select CPU_FEROCEON
  388. select GENERIC_TIME
  389. select GENERIC_CLOCKEVENTS
  390. select PLAT_ORION
  391. help
  392. Support for the Marvell Loki (88RC8480) SoC.
  393. config ARCH_MV78XX0
  394. bool "Marvell MV78xx0"
  395. select CPU_FEROCEON
  396. select PCI
  397. select GENERIC_GPIO
  398. select ARCH_REQUIRE_GPIOLIB
  399. select GENERIC_TIME
  400. select GENERIC_CLOCKEVENTS
  401. select PLAT_ORION
  402. help
  403. Support for the following Marvell MV78xx0 series SoCs:
  404. MV781x0, MV782x0.
  405. config ARCH_ORION5X
  406. bool "Marvell Orion"
  407. depends on MMU
  408. select CPU_FEROCEON
  409. select PCI
  410. select GENERIC_GPIO
  411. select ARCH_REQUIRE_GPIOLIB
  412. select GENERIC_TIME
  413. select GENERIC_CLOCKEVENTS
  414. select PLAT_ORION
  415. help
  416. Support for the following Marvell Orion 5x series SoCs:
  417. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  418. Orion-2 (5281), Orion-1-90 (6183).
  419. config ARCH_MMP
  420. bool "Marvell PXA168/910/MMP2"
  421. depends on MMU
  422. select GENERIC_GPIO
  423. select ARCH_REQUIRE_GPIOLIB
  424. select HAVE_CLK
  425. select COMMON_CLKDEV
  426. select GENERIC_TIME
  427. select GENERIC_CLOCKEVENTS
  428. select TICK_ONESHOT
  429. select PLAT_PXA
  430. help
  431. Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
  432. config ARCH_KS8695
  433. bool "Micrel/Kendin KS8695"
  434. select CPU_ARM922T
  435. select GENERIC_GPIO
  436. select ARCH_REQUIRE_GPIOLIB
  437. help
  438. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  439. System-on-Chip devices.
  440. config ARCH_NS9XXX
  441. bool "NetSilicon NS9xxx"
  442. select CPU_ARM926T
  443. select GENERIC_GPIO
  444. select GENERIC_TIME
  445. select GENERIC_CLOCKEVENTS
  446. select HAVE_CLK
  447. help
  448. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  449. System.
  450. <http://www.digi.com/products/microprocessors/index.jsp>
  451. config ARCH_W90X900
  452. bool "Nuvoton W90X900 CPU"
  453. select CPU_ARM926T
  454. select ARCH_REQUIRE_GPIOLIB
  455. select GENERIC_GPIO
  456. select HAVE_CLK
  457. select COMMON_CLKDEV
  458. select GENERIC_TIME
  459. select GENERIC_CLOCKEVENTS
  460. help
  461. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  462. At present, the w90x900 has been renamed nuc900, regarding
  463. the ARM series product line, you can login the following
  464. link address to know more.
  465. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  466. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  467. config ARCH_PNX4008
  468. bool "Philips Nexperia PNX4008 Mobile"
  469. select CPU_ARM926T
  470. select HAVE_CLK
  471. help
  472. This enables support for Philips PNX4008 mobile platform.
  473. config ARCH_PXA
  474. bool "PXA2xx/PXA3xx-based"
  475. depends on MMU
  476. select ARCH_MTD_XIP
  477. select ARCH_HAS_CPUFREQ
  478. select GENERIC_GPIO
  479. select HAVE_CLK
  480. select COMMON_CLKDEV
  481. select ARCH_REQUIRE_GPIOLIB
  482. select GENERIC_TIME
  483. select GENERIC_CLOCKEVENTS
  484. select TICK_ONESHOT
  485. select PLAT_PXA
  486. help
  487. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  488. config ARCH_MSM
  489. bool "Qualcomm MSM"
  490. select CPU_V6
  491. select GENERIC_TIME
  492. select GENERIC_CLOCKEVENTS
  493. help
  494. Support for Qualcomm MSM7K based systems. This runs on the ARM11
  495. apps processor of the MSM7K and depends on a shared memory
  496. interface to the ARM9 modem processor which runs the baseband stack
  497. and controls some vital subsystems (clock and power control, etc).
  498. config ARCH_SHMOBILE
  499. bool "Renesas SH-Mobile"
  500. help
  501. Support for Renesas's SH-Mobile ARM platforms
  502. config ARCH_RPC
  503. bool "RiscPC"
  504. select ARCH_ACORN
  505. select FIQ
  506. select TIMER_ACORN
  507. select ARCH_MAY_HAVE_PC_FDC
  508. select HAVE_PATA_PLATFORM
  509. select ISA_DMA_API
  510. select NO_IOPORT
  511. select ARCH_SPARSEMEM_ENABLE
  512. help
  513. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  514. CD-ROM interface, serial and parallel port, and the floppy drive.
  515. config ARCH_SA1100
  516. bool "SA1100-based"
  517. select CPU_SA1100
  518. select ISA
  519. select ARCH_SPARSEMEM_ENABLE
  520. select ARCH_MTD_XIP
  521. select ARCH_HAS_CPUFREQ
  522. select CPU_FREQ
  523. select GENERIC_GPIO
  524. select GENERIC_TIME
  525. select GENERIC_CLOCKEVENTS
  526. select HAVE_CLK
  527. select TICK_ONESHOT
  528. select ARCH_REQUIRE_GPIOLIB
  529. help
  530. Support for StrongARM 11x0 based boards.
  531. config ARCH_S3C2410
  532. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  533. select GENERIC_GPIO
  534. select ARCH_HAS_CPUFREQ
  535. select HAVE_CLK
  536. help
  537. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  538. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  539. the Samsung SMDK2410 development board (and derivatives).
  540. config ARCH_S3C64XX
  541. bool "Samsung S3C64XX"
  542. select PLAT_SAMSUNG
  543. select CPU_V6
  544. select GENERIC_GPIO
  545. select ARM_VIC
  546. select HAVE_CLK
  547. select NO_IOPORT
  548. select ARCH_HAS_CPUFREQ
  549. select ARCH_REQUIRE_GPIOLIB
  550. select SAMSUNG_CLKSRC
  551. select SAMSUNG_IRQ_VIC_TIMER
  552. select SAMSUNG_IRQ_UART
  553. select S3C_GPIO_TRACK
  554. select S3C_GPIO_PULL_UPDOWN
  555. select S3C_GPIO_CFG_S3C24XX
  556. select S3C_GPIO_CFG_S3C64XX
  557. select S3C_DEV_NAND
  558. select USB_ARCH_HAS_OHCI
  559. select SAMSUNG_GPIOLIB_4BIT
  560. help
  561. Samsung S3C64XX series based systems
  562. config ARCH_S5P6440
  563. bool "Samsung S5P6440"
  564. select CPU_V6
  565. select GENERIC_GPIO
  566. select HAVE_CLK
  567. help
  568. Samsung S5P6440 CPU based systems
  569. config ARCH_S5P6442
  570. bool "Samsung S5P6442"
  571. select CPU_V6
  572. select GENERIC_GPIO
  573. select HAVE_CLK
  574. help
  575. Samsung S5P6442 CPU based systems
  576. config ARCH_S5PC1XX
  577. bool "Samsung S5PC1XX"
  578. select GENERIC_GPIO
  579. select HAVE_CLK
  580. select CPU_V7
  581. help
  582. Samsung S5PC1XX series based systems
  583. config ARCH_S5PV210
  584. bool "Samsung S5PV210/S5PC110"
  585. select CPU_V7
  586. select GENERIC_GPIO
  587. select HAVE_CLK
  588. select ARM_L1_CACHE_SHIFT_6
  589. help
  590. Samsung S5PV210/S5PC110 series based systems
  591. config ARCH_SHARK
  592. bool "Shark"
  593. select CPU_SA110
  594. select ISA
  595. select ISA_DMA
  596. select ZONE_DMA
  597. select PCI
  598. help
  599. Support for the StrongARM based Digital DNARD machine, also known
  600. as "Shark" (<http://www.shark-linux.de/shark.html>).
  601. config ARCH_LH7A40X
  602. bool "Sharp LH7A40X"
  603. select CPU_ARM922T
  604. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  605. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  606. help
  607. Say Y here for systems based on one of the Sharp LH7A40X
  608. System on a Chip processors. These CPUs include an ARM922T
  609. core with a wide array of integrated devices for
  610. hand-held and low-power applications.
  611. config ARCH_U300
  612. bool "ST-Ericsson U300 Series"
  613. depends on MMU
  614. select CPU_ARM926T
  615. select HAVE_TCM
  616. select ARM_AMBA
  617. select ARM_VIC
  618. select GENERIC_TIME
  619. select GENERIC_CLOCKEVENTS
  620. select HAVE_CLK
  621. select COMMON_CLKDEV
  622. select GENERIC_GPIO
  623. help
  624. Support for ST-Ericsson U300 series mobile platforms.
  625. config ARCH_DAVINCI
  626. bool "TI DaVinci"
  627. select CPU_ARM926T
  628. select GENERIC_TIME
  629. select GENERIC_CLOCKEVENTS
  630. select GENERIC_GPIO
  631. select ARCH_REQUIRE_GPIOLIB
  632. select HAVE_CLK
  633. select ZONE_DMA
  634. select HAVE_IDE
  635. select COMMON_CLKDEV
  636. select GENERIC_ALLOCATOR
  637. select ARCH_HAS_HOLES_MEMORYMODEL
  638. help
  639. Support for TI's DaVinci platform.
  640. config ARCH_OMAP
  641. bool "TI OMAP"
  642. select GENERIC_GPIO
  643. select HAVE_CLK
  644. select ARCH_REQUIRE_GPIOLIB
  645. select ARCH_HAS_CPUFREQ
  646. select GENERIC_TIME
  647. select GENERIC_CLOCKEVENTS
  648. select ARCH_HAS_HOLES_MEMORYMODEL
  649. help
  650. Support for TI's OMAP platform (OMAP1 and OMAP2).
  651. config ARCH_BCMRING
  652. bool "Broadcom BCMRING"
  653. depends on MMU
  654. select CPU_V6
  655. select ARM_AMBA
  656. select COMMON_CLKDEV
  657. select GENERIC_TIME
  658. select GENERIC_CLOCKEVENTS
  659. select ARCH_WANT_OPTIONAL_GPIOLIB
  660. help
  661. Support for Broadcom's BCMRing platform.
  662. config ARCH_U8500
  663. bool "ST-Ericsson U8500 Series"
  664. select CPU_V7
  665. select ARM_AMBA
  666. select GENERIC_TIME
  667. select GENERIC_CLOCKEVENTS
  668. select COMMON_CLKDEV
  669. help
  670. Support for ST-Ericsson's Ux500 architecture
  671. endchoice
  672. source "arch/arm/mach-aaec2000/Kconfig"
  673. source "arch/arm/mach-at91/Kconfig"
  674. source "arch/arm/mach-bcmring/Kconfig"
  675. source "arch/arm/mach-clps711x/Kconfig"
  676. source "arch/arm/mach-davinci/Kconfig"
  677. source "arch/arm/mach-dove/Kconfig"
  678. source "arch/arm/mach-ep93xx/Kconfig"
  679. source "arch/arm/mach-footbridge/Kconfig"
  680. source "arch/arm/mach-gemini/Kconfig"
  681. source "arch/arm/mach-h720x/Kconfig"
  682. source "arch/arm/mach-integrator/Kconfig"
  683. source "arch/arm/mach-iop32x/Kconfig"
  684. source "arch/arm/mach-iop33x/Kconfig"
  685. source "arch/arm/mach-iop13xx/Kconfig"
  686. source "arch/arm/mach-ixp4xx/Kconfig"
  687. source "arch/arm/mach-ixp2000/Kconfig"
  688. source "arch/arm/mach-ixp23xx/Kconfig"
  689. source "arch/arm/mach-kirkwood/Kconfig"
  690. source "arch/arm/mach-ks8695/Kconfig"
  691. source "arch/arm/mach-lh7a40x/Kconfig"
  692. source "arch/arm/mach-loki/Kconfig"
  693. source "arch/arm/mach-msm/Kconfig"
  694. source "arch/arm/mach-mv78xx0/Kconfig"
  695. source "arch/arm/plat-mxc/Kconfig"
  696. source "arch/arm/mach-netx/Kconfig"
  697. source "arch/arm/mach-nomadik/Kconfig"
  698. source "arch/arm/plat-nomadik/Kconfig"
  699. source "arch/arm/mach-ns9xxx/Kconfig"
  700. source "arch/arm/plat-omap/Kconfig"
  701. source "arch/arm/mach-omap1/Kconfig"
  702. source "arch/arm/mach-omap2/Kconfig"
  703. source "arch/arm/mach-orion5x/Kconfig"
  704. source "arch/arm/mach-pxa/Kconfig"
  705. source "arch/arm/plat-pxa/Kconfig"
  706. source "arch/arm/mach-mmp/Kconfig"
  707. source "arch/arm/mach-realview/Kconfig"
  708. source "arch/arm/mach-sa1100/Kconfig"
  709. source "arch/arm/plat-samsung/Kconfig"
  710. source "arch/arm/plat-s3c24xx/Kconfig"
  711. source "arch/arm/plat-s5p/Kconfig"
  712. source "arch/arm/plat-s5pc1xx/Kconfig"
  713. if ARCH_S3C2410
  714. source "arch/arm/mach-s3c2400/Kconfig"
  715. source "arch/arm/mach-s3c2410/Kconfig"
  716. source "arch/arm/mach-s3c2412/Kconfig"
  717. source "arch/arm/mach-s3c2440/Kconfig"
  718. source "arch/arm/mach-s3c2443/Kconfig"
  719. endif
  720. if ARCH_S3C64XX
  721. source "arch/arm/mach-s3c64xx/Kconfig"
  722. endif
  723. source "arch/arm/mach-s5p6440/Kconfig"
  724. source "arch/arm/mach-s5p6442/Kconfig"
  725. if ARCH_S5PC1XX
  726. source "arch/arm/mach-s5pc100/Kconfig"
  727. endif
  728. source "arch/arm/mach-s5pv210/Kconfig"
  729. source "arch/arm/mach-shmobile/Kconfig"
  730. source "arch/arm/plat-stmp3xxx/Kconfig"
  731. source "arch/arm/mach-u300/Kconfig"
  732. source "arch/arm/mach-ux500/Kconfig"
  733. source "arch/arm/mach-versatile/Kconfig"
  734. source "arch/arm/mach-w90x900/Kconfig"
  735. # Definitions to make life easier
  736. config ARCH_ACORN
  737. bool
  738. config PLAT_IOP
  739. bool
  740. select GENERIC_CLOCKEVENTS
  741. select GENERIC_TIME
  742. config PLAT_ORION
  743. bool
  744. config PLAT_PXA
  745. bool
  746. source arch/arm/mm/Kconfig
  747. config IWMMXT
  748. bool "Enable iWMMXt support"
  749. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
  750. default y if PXA27x || PXA3xx || ARCH_MMP
  751. help
  752. Enable support for iWMMXt context switching at run time if
  753. running on a CPU that supports it.
  754. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  755. config XSCALE_PMU
  756. bool
  757. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  758. default y
  759. if !MMU
  760. source "arch/arm/Kconfig-nommu"
  761. endif
  762. config ARM_ERRATA_411920
  763. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  764. depends on CPU_V6 && !SMP
  765. help
  766. Invalidation of the Instruction Cache operation can
  767. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  768. It does not affect the MPCore. This option enables the ARM Ltd.
  769. recommended workaround.
  770. config ARM_ERRATA_430973
  771. bool "ARM errata: Stale prediction on replaced interworking branch"
  772. depends on CPU_V7
  773. help
  774. This option enables the workaround for the 430973 Cortex-A8
  775. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  776. interworking branch is replaced with another code sequence at the
  777. same virtual address, whether due to self-modifying code or virtual
  778. to physical address re-mapping, Cortex-A8 does not recover from the
  779. stale interworking branch prediction. This results in Cortex-A8
  780. executing the new code sequence in the incorrect ARM or Thumb state.
  781. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  782. and also flushes the branch target cache at every context switch.
  783. Note that setting specific bits in the ACTLR register may not be
  784. available in non-secure mode.
  785. config ARM_ERRATA_458693
  786. bool "ARM errata: Processor deadlock when a false hazard is created"
  787. depends on CPU_V7
  788. help
  789. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  790. erratum. For very specific sequences of memory operations, it is
  791. possible for a hazard condition intended for a cache line to instead
  792. be incorrectly associated with a different cache line. This false
  793. hazard might then cause a processor deadlock. The workaround enables
  794. the L1 caching of the NEON accesses and disables the PLD instruction
  795. in the ACTLR register. Note that setting specific bits in the ACTLR
  796. register may not be available in non-secure mode.
  797. config ARM_ERRATA_460075
  798. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  799. depends on CPU_V7
  800. help
  801. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  802. erratum. Any asynchronous access to the L2 cache may encounter a
  803. situation in which recent store transactions to the L2 cache are lost
  804. and overwritten with stale memory contents from external memory. The
  805. workaround disables the write-allocate mode for the L2 cache via the
  806. ACTLR register. Note that setting specific bits in the ACTLR register
  807. may not be available in non-secure mode.
  808. endmenu
  809. source "arch/arm/common/Kconfig"
  810. config FORCE_MAX_ZONEORDER
  811. int
  812. depends on SA1111
  813. default "9"
  814. menu "Bus support"
  815. config ARM_AMBA
  816. bool
  817. config ISA
  818. bool
  819. help
  820. Find out whether you have ISA slots on your motherboard. ISA is the
  821. name of a bus system, i.e. the way the CPU talks to the other stuff
  822. inside your box. Other bus systems are PCI, EISA, MicroChannel
  823. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  824. newer boards don't support it. If you have ISA, say Y, otherwise N.
  825. # Select ISA DMA controller support
  826. config ISA_DMA
  827. bool
  828. select ISA_DMA_API
  829. # Select ISA DMA interface
  830. config ISA_DMA_API
  831. bool
  832. config PCI
  833. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  834. help
  835. Find out whether you have a PCI motherboard. PCI is the name of a
  836. bus system, i.e. the way the CPU talks to the other stuff inside
  837. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  838. VESA. If you have PCI, say Y, otherwise N.
  839. config PCI_SYSCALL
  840. def_bool PCI
  841. # Select the host bridge type
  842. config PCI_HOST_VIA82C505
  843. bool
  844. depends on PCI && ARCH_SHARK
  845. default y
  846. config PCI_HOST_ITE8152
  847. bool
  848. depends on PCI && MACH_ARMCORE
  849. default y
  850. select DMABOUNCE
  851. source "drivers/pci/Kconfig"
  852. source "drivers/pcmcia/Kconfig"
  853. endmenu
  854. menu "Kernel Features"
  855. source "kernel/time/Kconfig"
  856. config SMP
  857. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  858. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
  859. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
  860. depends on GENERIC_CLOCKEVENTS
  861. select USE_GENERIC_SMP_HELPERS
  862. select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
  863. help
  864. This enables support for systems with more than one CPU. If you have
  865. a system with only one CPU, like most personal computers, say N. If
  866. you have a system with more than one CPU, say Y.
  867. If you say N here, the kernel will run on single and multiprocessor
  868. machines, but will use only one CPU of a multiprocessor machine. If
  869. you say Y here, the kernel will run on many, but not all, single
  870. processor machines. On a single processor machine, the kernel will
  871. run faster if you say N here.
  872. See also <file:Documentation/i386/IO-APIC.txt>,
  873. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  874. <http://www.linuxdoc.org/docs.html#howto>.
  875. If you don't know what to do here, say N.
  876. config HAVE_ARM_SCU
  877. bool
  878. depends on SMP
  879. help
  880. This option enables support for the ARM system coherency unit
  881. config HAVE_ARM_TWD
  882. bool
  883. depends on SMP
  884. help
  885. This options enables support for the ARM timer and watchdog unit
  886. choice
  887. prompt "Memory split"
  888. default VMSPLIT_3G
  889. help
  890. Select the desired split between kernel and user memory.
  891. If you are not absolutely sure what you are doing, leave this
  892. option alone!
  893. config VMSPLIT_3G
  894. bool "3G/1G user/kernel split"
  895. config VMSPLIT_2G
  896. bool "2G/2G user/kernel split"
  897. config VMSPLIT_1G
  898. bool "1G/3G user/kernel split"
  899. endchoice
  900. config PAGE_OFFSET
  901. hex
  902. default 0x40000000 if VMSPLIT_1G
  903. default 0x80000000 if VMSPLIT_2G
  904. default 0xC0000000
  905. config NR_CPUS
  906. int "Maximum number of CPUs (2-32)"
  907. range 2 32
  908. depends on SMP
  909. default "4"
  910. config HOTPLUG_CPU
  911. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  912. depends on SMP && HOTPLUG && EXPERIMENTAL
  913. help
  914. Say Y here to experiment with turning CPUs off and on. CPUs
  915. can be controlled through /sys/devices/system/cpu.
  916. config LOCAL_TIMERS
  917. bool "Use local timer interrupts"
  918. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
  919. REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
  920. default y
  921. select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
  922. help
  923. Enable support for local timers on SMP platforms, rather then the
  924. legacy IPI broadcast method. Local timers allows the system
  925. accounting to be spread across the timer interval, preventing a
  926. "thundering herd" at every timer tick.
  927. source kernel/Kconfig.preempt
  928. config HZ
  929. int
  930. default 128 if ARCH_L7200
  931. default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
  932. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  933. default AT91_TIMER_HZ if ARCH_AT91
  934. default 100
  935. config THUMB2_KERNEL
  936. bool "Compile the kernel in Thumb-2 mode"
  937. depends on CPU_V7 && EXPERIMENTAL
  938. select AEABI
  939. select ARM_ASM_UNIFIED
  940. help
  941. By enabling this option, the kernel will be compiled in
  942. Thumb-2 mode. A compiler/assembler that understand the unified
  943. ARM-Thumb syntax is needed.
  944. If unsure, say N.
  945. config ARM_ASM_UNIFIED
  946. bool
  947. config AEABI
  948. bool "Use the ARM EABI to compile the kernel"
  949. help
  950. This option allows for the kernel to be compiled using the latest
  951. ARM ABI (aka EABI). This is only useful if you are using a user
  952. space environment that is also compiled with EABI.
  953. Since there are major incompatibilities between the legacy ABI and
  954. EABI, especially with regard to structure member alignment, this
  955. option also changes the kernel syscall calling convention to
  956. disambiguate both ABIs and allow for backward compatibility support
  957. (selected with CONFIG_OABI_COMPAT).
  958. To use this you need GCC version 4.0.0 or later.
  959. config OABI_COMPAT
  960. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  961. depends on AEABI && EXPERIMENTAL
  962. default y
  963. help
  964. This option preserves the old syscall interface along with the
  965. new (ARM EABI) one. It also provides a compatibility layer to
  966. intercept syscalls that have structure arguments which layout
  967. in memory differs between the legacy ABI and the new ARM EABI
  968. (only for non "thumb" binaries). This option adds a tiny
  969. overhead to all syscalls and produces a slightly larger kernel.
  970. If you know you'll be using only pure EABI user space then you
  971. can say N here. If this option is not selected and you attempt
  972. to execute a legacy ABI binary then the result will be
  973. UNPREDICTABLE (in fact it can be predicted that it won't work
  974. at all). If in doubt say Y.
  975. config ARCH_HAS_HOLES_MEMORYMODEL
  976. bool
  977. # Discontigmem is deprecated
  978. config ARCH_DISCONTIGMEM_ENABLE
  979. bool
  980. config ARCH_SPARSEMEM_ENABLE
  981. bool
  982. config ARCH_SPARSEMEM_DEFAULT
  983. def_bool ARCH_SPARSEMEM_ENABLE
  984. config ARCH_SELECT_MEMORY_MODEL
  985. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  986. config NODES_SHIFT
  987. int
  988. default "4" if ARCH_LH7A40X
  989. default "2"
  990. depends on NEED_MULTIPLE_NODES
  991. config HIGHMEM
  992. bool "High Memory Support (EXPERIMENTAL)"
  993. depends on MMU && EXPERIMENTAL
  994. help
  995. The address space of ARM processors is only 4 Gigabytes large
  996. and it has to accommodate user address space, kernel address
  997. space as well as some memory mapped IO. That means that, if you
  998. have a large amount of physical memory and/or IO, not all of the
  999. memory can be "permanently mapped" by the kernel. The physical
  1000. memory that is not permanently mapped is called "high memory".
  1001. Depending on the selected kernel/user memory split, minimum
  1002. vmalloc space and actual amount of RAM, you may not need this
  1003. option which should result in a slightly faster kernel.
  1004. If unsure, say n.
  1005. config HIGHPTE
  1006. bool "Allocate 2nd-level pagetables from highmem"
  1007. depends on HIGHMEM
  1008. depends on !OUTER_CACHE
  1009. source "mm/Kconfig"
  1010. config LEDS
  1011. bool "Timer and CPU usage LEDs"
  1012. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  1013. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  1014. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  1015. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  1016. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  1017. ARCH_AT91 || ARCH_DAVINCI || \
  1018. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  1019. help
  1020. If you say Y here, the LEDs on your machine will be used
  1021. to provide useful information about your current system status.
  1022. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  1023. be able to select which LEDs are active using the options below. If
  1024. you are compiling a kernel for the EBSA-110 or the LART however, the
  1025. red LED will simply flash regularly to indicate that the system is
  1026. still functional. It is safe to say Y here if you have a CATS
  1027. system, but the driver will do nothing.
  1028. config LEDS_TIMER
  1029. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  1030. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1031. || MACH_OMAP_PERSEUS2
  1032. depends on LEDS
  1033. depends on !GENERIC_CLOCKEVENTS
  1034. default y if ARCH_EBSA110
  1035. help
  1036. If you say Y here, one of the system LEDs (the green one on the
  1037. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1038. will flash regularly to indicate that the system is still
  1039. operational. This is mainly useful to kernel hackers who are
  1040. debugging unstable kernels.
  1041. The LART uses the same LED for both Timer LED and CPU usage LED
  1042. functions. You may choose to use both, but the Timer LED function
  1043. will overrule the CPU usage LED.
  1044. config LEDS_CPU
  1045. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1046. !ARCH_OMAP) \
  1047. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1048. || MACH_OMAP_PERSEUS2
  1049. depends on LEDS
  1050. help
  1051. If you say Y here, the red LED will be used to give a good real
  1052. time indication of CPU usage, by lighting whenever the idle task
  1053. is not currently executing.
  1054. The LART uses the same LED for both Timer LED and CPU usage LED
  1055. functions. You may choose to use both, but the Timer LED function
  1056. will overrule the CPU usage LED.
  1057. config ALIGNMENT_TRAP
  1058. bool
  1059. depends on CPU_CP15_MMU
  1060. default y if !ARCH_EBSA110
  1061. help
  1062. ARM processors cannot fetch/store information which is not
  1063. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1064. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1065. fetch/store instructions will be emulated in software if you say
  1066. here, which has a severe performance impact. This is necessary for
  1067. correct operation of some network protocols. With an IP-only
  1068. configuration it is safe to say N, otherwise say Y.
  1069. config UACCESS_WITH_MEMCPY
  1070. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1071. depends on MMU && EXPERIMENTAL
  1072. default y if CPU_FEROCEON
  1073. help
  1074. Implement faster copy_to_user and clear_user methods for CPU
  1075. cores where a 8-word STM instruction give significantly higher
  1076. memory write throughput than a sequence of individual 32bit stores.
  1077. A possible side effect is a slight increase in scheduling latency
  1078. between threads sharing the same address space if they invoke
  1079. such copy operations with large buffers.
  1080. However, if the CPU data cache is using a write-allocate mode,
  1081. this option is unlikely to provide any performance gain.
  1082. endmenu
  1083. menu "Boot options"
  1084. # Compressed boot loader in ROM. Yes, we really want to ask about
  1085. # TEXT and BSS so we preserve their values in the config files.
  1086. config ZBOOT_ROM_TEXT
  1087. hex "Compressed ROM boot loader base address"
  1088. default "0"
  1089. help
  1090. The physical address at which the ROM-able zImage is to be
  1091. placed in the target. Platforms which normally make use of
  1092. ROM-able zImage formats normally set this to a suitable
  1093. value in their defconfig file.
  1094. If ZBOOT_ROM is not enabled, this has no effect.
  1095. config ZBOOT_ROM_BSS
  1096. hex "Compressed ROM boot loader BSS address"
  1097. default "0"
  1098. help
  1099. The base address of an area of read/write memory in the target
  1100. for the ROM-able zImage which must be available while the
  1101. decompressor is running. It must be large enough to hold the
  1102. entire decompressed kernel plus an additional 128 KiB.
  1103. Platforms which normally make use of ROM-able zImage formats
  1104. normally set this to a suitable value in their defconfig file.
  1105. If ZBOOT_ROM is not enabled, this has no effect.
  1106. config ZBOOT_ROM
  1107. bool "Compressed boot loader in ROM/flash"
  1108. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1109. help
  1110. Say Y here if you intend to execute your compressed kernel image
  1111. (zImage) directly from ROM or flash. If unsure, say N.
  1112. config CMDLINE
  1113. string "Default kernel command string"
  1114. default ""
  1115. help
  1116. On some architectures (EBSA110 and CATS), there is currently no way
  1117. for the boot loader to pass arguments to the kernel. For these
  1118. architectures, you should supply some command-line options at build
  1119. time by entering them here. As a minimum, you should specify the
  1120. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1121. config XIP_KERNEL
  1122. bool "Kernel Execute-In-Place from ROM"
  1123. depends on !ZBOOT_ROM
  1124. help
  1125. Execute-In-Place allows the kernel to run from non-volatile storage
  1126. directly addressable by the CPU, such as NOR flash. This saves RAM
  1127. space since the text section of the kernel is not loaded from flash
  1128. to RAM. Read-write sections, such as the data section and stack,
  1129. are still copied to RAM. The XIP kernel is not compressed since
  1130. it has to run directly from flash, so it will take more space to
  1131. store it. The flash address used to link the kernel object files,
  1132. and for storing it, is configuration dependent. Therefore, if you
  1133. say Y here, you must know the proper physical address where to
  1134. store the kernel image depending on your own flash memory usage.
  1135. Also note that the make target becomes "make xipImage" rather than
  1136. "make zImage" or "make Image". The final kernel binary to put in
  1137. ROM memory will be arch/arm/boot/xipImage.
  1138. If unsure, say N.
  1139. config XIP_PHYS_ADDR
  1140. hex "XIP Kernel Physical Location"
  1141. depends on XIP_KERNEL
  1142. default "0x00080000"
  1143. help
  1144. This is the physical address in your flash memory the kernel will
  1145. be linked for and stored to. This address is dependent on your
  1146. own flash usage.
  1147. config KEXEC
  1148. bool "Kexec system call (EXPERIMENTAL)"
  1149. depends on EXPERIMENTAL
  1150. help
  1151. kexec is a system call that implements the ability to shutdown your
  1152. current kernel, and to start another kernel. It is like a reboot
  1153. but it is independent of the system firmware. And like a reboot
  1154. you can start any kernel with it, not just Linux.
  1155. It is an ongoing process to be certain the hardware in a machine
  1156. is properly shutdown, so do not be surprised if this code does not
  1157. initially work for you. It may help to enable device hotplugging
  1158. support.
  1159. config ATAGS_PROC
  1160. bool "Export atags in procfs"
  1161. depends on KEXEC
  1162. default y
  1163. help
  1164. Should the atags used to boot the kernel be exported in an "atags"
  1165. file in procfs. Useful with kexec.
  1166. endmenu
  1167. menu "CPU Power Management"
  1168. if ARCH_HAS_CPUFREQ
  1169. source "drivers/cpufreq/Kconfig"
  1170. config CPU_FREQ_SA1100
  1171. bool
  1172. config CPU_FREQ_SA1110
  1173. bool
  1174. config CPU_FREQ_INTEGRATOR
  1175. tristate "CPUfreq driver for ARM Integrator CPUs"
  1176. depends on ARCH_INTEGRATOR && CPU_FREQ
  1177. default y
  1178. help
  1179. This enables the CPUfreq driver for ARM Integrator CPUs.
  1180. For details, take a look at <file:Documentation/cpu-freq>.
  1181. If in doubt, say Y.
  1182. config CPU_FREQ_PXA
  1183. bool
  1184. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1185. default y
  1186. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1187. config CPU_FREQ_S3C64XX
  1188. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1189. depends on CPU_FREQ && CPU_S3C6410
  1190. config CPU_FREQ_S3C
  1191. bool
  1192. help
  1193. Internal configuration node for common cpufreq on Samsung SoC
  1194. config CPU_FREQ_S3C24XX
  1195. bool "CPUfreq driver for Samsung S3C24XX series CPUs"
  1196. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1197. select CPU_FREQ_S3C
  1198. help
  1199. This enables the CPUfreq driver for the Samsung S3C24XX family
  1200. of CPUs.
  1201. For details, take a look at <file:Documentation/cpu-freq>.
  1202. If in doubt, say N.
  1203. config CPU_FREQ_S3C24XX_PLL
  1204. bool "Support CPUfreq changing of PLL frequency"
  1205. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1206. help
  1207. Compile in support for changing the PLL frequency from the
  1208. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1209. after a frequency change, so by default it is not enabled.
  1210. This also means that the PLL tables for the selected CPU(s) will
  1211. be built which may increase the size of the kernel image.
  1212. config CPU_FREQ_S3C24XX_DEBUG
  1213. bool "Debug CPUfreq Samsung driver core"
  1214. depends on CPU_FREQ_S3C24XX
  1215. help
  1216. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1217. config CPU_FREQ_S3C24XX_IODEBUG
  1218. bool "Debug CPUfreq Samsung driver IO timing"
  1219. depends on CPU_FREQ_S3C24XX
  1220. help
  1221. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1222. config CPU_FREQ_S3C24XX_DEBUGFS
  1223. bool "Export debugfs for CPUFreq"
  1224. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1225. help
  1226. Export status information via debugfs.
  1227. endif
  1228. source "drivers/cpuidle/Kconfig"
  1229. endmenu
  1230. menu "Floating point emulation"
  1231. comment "At least one emulation must be selected"
  1232. config FPE_NWFPE
  1233. bool "NWFPE math emulation"
  1234. depends on !AEABI || OABI_COMPAT
  1235. ---help---
  1236. Say Y to include the NWFPE floating point emulator in the kernel.
  1237. This is necessary to run most binaries. Linux does not currently
  1238. support floating point hardware so you need to say Y here even if
  1239. your machine has an FPA or floating point co-processor podule.
  1240. You may say N here if you are going to load the Acorn FPEmulator
  1241. early in the bootup.
  1242. config FPE_NWFPE_XP
  1243. bool "Support extended precision"
  1244. depends on FPE_NWFPE
  1245. help
  1246. Say Y to include 80-bit support in the kernel floating-point
  1247. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1248. Note that gcc does not generate 80-bit operations by default,
  1249. so in most cases this option only enlarges the size of the
  1250. floating point emulator without any good reason.
  1251. You almost surely want to say N here.
  1252. config FPE_FASTFPE
  1253. bool "FastFPE math emulation (EXPERIMENTAL)"
  1254. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1255. ---help---
  1256. Say Y here to include the FAST floating point emulator in the kernel.
  1257. This is an experimental much faster emulator which now also has full
  1258. precision for the mantissa. It does not support any exceptions.
  1259. It is very simple, and approximately 3-6 times faster than NWFPE.
  1260. It should be sufficient for most programs. It may be not suitable
  1261. for scientific calculations, but you have to check this for yourself.
  1262. If you do not feel you need a faster FP emulation you should better
  1263. choose NWFPE.
  1264. config VFP
  1265. bool "VFP-format floating point maths"
  1266. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1267. help
  1268. Say Y to include VFP support code in the kernel. This is needed
  1269. if your hardware includes a VFP unit.
  1270. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1271. release notes and additional status information.
  1272. Say N if your target does not have VFP hardware.
  1273. config VFPv3
  1274. bool
  1275. depends on VFP
  1276. default y if CPU_V7
  1277. config NEON
  1278. bool "Advanced SIMD (NEON) Extension support"
  1279. depends on VFPv3 && CPU_V7
  1280. help
  1281. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1282. Extension.
  1283. endmenu
  1284. menu "Userspace binary formats"
  1285. source "fs/Kconfig.binfmt"
  1286. config ARTHUR
  1287. tristate "RISC OS personality"
  1288. depends on !AEABI
  1289. help
  1290. Say Y here to include the kernel code necessary if you want to run
  1291. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1292. experimental; if this sounds frightening, say N and sleep in peace.
  1293. You can also say M here to compile this support as a module (which
  1294. will be called arthur).
  1295. endmenu
  1296. menu "Power management options"
  1297. source "kernel/power/Kconfig"
  1298. config ARCH_SUSPEND_POSSIBLE
  1299. def_bool y
  1300. endmenu
  1301. source "net/Kconfig"
  1302. source "drivers/Kconfig"
  1303. source "fs/Kconfig"
  1304. source "arch/arm/Kconfig.debug"
  1305. source "security/Kconfig"
  1306. source "crypto/Kconfig"
  1307. source "lib/Kconfig"