Kconfig 44 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 GENERIC_ATOMIC64 if (!CPU_32v6K)
  14. select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
  15. select HAVE_ARCH_KGDB
  16. select HAVE_KPROBES if (!XIP_KERNEL)
  17. select HAVE_KRETPROBES if (HAVE_KPROBES)
  18. select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  19. select HAVE_GENERIC_DMA_COHERENT
  20. select HAVE_KERNEL_GZIP
  21. select HAVE_KERNEL_LZO
  22. select HAVE_KERNEL_LZMA
  23. select HAVE_PERF_EVENTS
  24. select PERF_USE_VMALLOC
  25. help
  26. The ARM series is a line of low-power-consumption RISC chip designs
  27. licensed by ARM Ltd and targeted at embedded applications and
  28. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  29. manufactured, but legacy ARM-based PC hardware remains popular in
  30. Europe. There is an ARM Linux project with a web page at
  31. <http://www.arm.linux.org.uk/>.
  32. config HAVE_PWM
  33. bool
  34. config SYS_SUPPORTS_APM_EMULATION
  35. bool
  36. config GENERIC_GPIO
  37. bool
  38. config GENERIC_TIME
  39. bool
  40. default y
  41. config ARCH_USES_GETTIMEOFFSET
  42. bool
  43. default n
  44. config GENERIC_CLOCKEVENTS
  45. bool
  46. config GENERIC_CLOCKEVENTS_BROADCAST
  47. bool
  48. depends on GENERIC_CLOCKEVENTS
  49. default y if SMP && !LOCAL_TIMERS
  50. config HAVE_TCM
  51. bool
  52. select GENERIC_ALLOCATOR
  53. config HAVE_PROC_CPU
  54. bool
  55. config NO_IOPORT
  56. bool
  57. config EISA
  58. bool
  59. ---help---
  60. The Extended Industry Standard Architecture (EISA) bus was
  61. developed as an open alternative to the IBM MicroChannel bus.
  62. The EISA bus provided some of the features of the IBM MicroChannel
  63. bus while maintaining backward compatibility with cards made for
  64. the older ISA bus. The EISA bus saw limited use between 1988 and
  65. 1995 when it was made obsolete by the PCI bus.
  66. Say Y here if you are building a kernel for an EISA-based machine.
  67. Otherwise, say N.
  68. config SBUS
  69. bool
  70. config MCA
  71. bool
  72. help
  73. MicroChannel Architecture is found in some IBM PS/2 machines and
  74. laptops. It is a bus system similar to PCI or ISA. See
  75. <file:Documentation/mca.txt> (and especially the web page given
  76. there) before attempting to build an MCA bus kernel.
  77. config GENERIC_HARDIRQS
  78. bool
  79. default y
  80. config STACKTRACE_SUPPORT
  81. bool
  82. default y
  83. config HAVE_LATENCYTOP_SUPPORT
  84. bool
  85. depends on !SMP
  86. default y
  87. config LOCKDEP_SUPPORT
  88. bool
  89. default y
  90. config TRACE_IRQFLAGS_SUPPORT
  91. bool
  92. default y
  93. config HARDIRQS_SW_RESEND
  94. bool
  95. default y
  96. config GENERIC_IRQ_PROBE
  97. bool
  98. default y
  99. config GENERIC_LOCKBREAK
  100. bool
  101. default y
  102. depends on SMP && PREEMPT
  103. config RWSEM_GENERIC_SPINLOCK
  104. bool
  105. default y
  106. config RWSEM_XCHGADD_ALGORITHM
  107. bool
  108. config ARCH_HAS_ILOG2_U32
  109. bool
  110. config ARCH_HAS_ILOG2_U64
  111. bool
  112. config ARCH_HAS_CPUFREQ
  113. bool
  114. help
  115. Internal node to signify that the ARCH has CPUFREQ support
  116. and that the relevant menu configurations are displayed for
  117. it.
  118. config GENERIC_HWEIGHT
  119. bool
  120. default y
  121. config GENERIC_CALIBRATE_DELAY
  122. bool
  123. default y
  124. config ARCH_MAY_HAVE_PC_FDC
  125. bool
  126. config ZONE_DMA
  127. bool
  128. config NEED_DMA_MAP_STATE
  129. def_bool y
  130. config GENERIC_ISA_DMA
  131. bool
  132. config FIQ
  133. bool
  134. config ARCH_MTD_XIP
  135. bool
  136. config GENERIC_HARDIRQS_NO__DO_IRQ
  137. def_bool y
  138. config ARM_L1_CACHE_SHIFT_6
  139. bool
  140. help
  141. Setting ARM L1 cache line size to 64 Bytes.
  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. #
  159. # The "ARM system type" choice list is ordered alphabetically by option
  160. # text. Please add new entries in the option alphabetic order.
  161. #
  162. choice
  163. prompt "ARM system type"
  164. default ARCH_VERSATILE
  165. config ARCH_AAEC2000
  166. bool "Agilent AAEC-2000 based"
  167. select CPU_ARM920T
  168. select ARM_AMBA
  169. select HAVE_CLK
  170. select ARCH_USES_GETTIMEOFFSET
  171. help
  172. This enables support for systems based on the Agilent AAEC-2000
  173. config ARCH_INTEGRATOR
  174. bool "ARM Ltd. Integrator family"
  175. select ARM_AMBA
  176. select ARCH_HAS_CPUFREQ
  177. select COMMON_CLKDEV
  178. select ICST
  179. select GENERIC_CLOCKEVENTS
  180. select PLAT_VERSATILE
  181. help
  182. Support for ARM's Integrator platform.
  183. config ARCH_REALVIEW
  184. bool "ARM Ltd. RealView family"
  185. select ARM_AMBA
  186. select COMMON_CLKDEV
  187. select ICST
  188. select GENERIC_CLOCKEVENTS
  189. select ARCH_WANT_OPTIONAL_GPIOLIB
  190. select PLAT_VERSATILE
  191. select ARM_TIMER_SP804
  192. select GPIO_PL061 if GPIOLIB
  193. help
  194. This enables support for ARM Ltd RealView boards.
  195. config ARCH_VERSATILE
  196. bool "ARM Ltd. Versatile family"
  197. select ARM_AMBA
  198. select ARM_VIC
  199. select COMMON_CLKDEV
  200. select ICST
  201. select GENERIC_CLOCKEVENTS
  202. select ARCH_WANT_OPTIONAL_GPIOLIB
  203. select PLAT_VERSATILE
  204. select ARM_TIMER_SP804
  205. help
  206. This enables support for ARM Ltd Versatile board.
  207. config ARCH_VEXPRESS
  208. bool "ARM Ltd. Versatile Express family"
  209. select ARCH_WANT_OPTIONAL_GPIOLIB
  210. select ARM_AMBA
  211. select ARM_TIMER_SP804
  212. select COMMON_CLKDEV
  213. select GENERIC_CLOCKEVENTS
  214. select HAVE_CLK
  215. select ICST
  216. select PLAT_VERSATILE
  217. help
  218. This enables support for the ARM Ltd Versatile Express boards.
  219. config ARCH_AT91
  220. bool "Atmel AT91"
  221. select ARCH_REQUIRE_GPIOLIB
  222. select HAVE_CLK
  223. select ARCH_USES_GETTIMEOFFSET
  224. help
  225. This enables support for systems based on the Atmel AT91RM9200,
  226. AT91SAM9 and AT91CAP9 processors.
  227. config ARCH_BCMRING
  228. bool "Broadcom BCMRING"
  229. depends on MMU
  230. select CPU_V6
  231. select ARM_AMBA
  232. select COMMON_CLKDEV
  233. select GENERIC_CLOCKEVENTS
  234. select ARCH_WANT_OPTIONAL_GPIOLIB
  235. help
  236. Support for Broadcom's BCMRing platform.
  237. config ARCH_CLPS711X
  238. bool "Cirrus Logic CLPS711x/EP721x-based"
  239. select CPU_ARM720T
  240. select ARCH_USES_GETTIMEOFFSET
  241. help
  242. Support for Cirrus Logic 711x/721x based boards.
  243. config ARCH_CNS3XXX
  244. bool "Cavium Networks CNS3XXX family"
  245. select CPU_V6
  246. select GENERIC_CLOCKEVENTS
  247. select ARM_GIC
  248. help
  249. Support for Cavium Networks CNS3XXX platform.
  250. config ARCH_GEMINI
  251. bool "Cortina Systems Gemini"
  252. select CPU_FA526
  253. select ARCH_REQUIRE_GPIOLIB
  254. select ARCH_USES_GETTIMEOFFSET
  255. help
  256. Support for the Cortina Systems Gemini family SoCs
  257. config ARCH_EBSA110
  258. bool "EBSA-110"
  259. select CPU_SA110
  260. select ISA
  261. select NO_IOPORT
  262. select ARCH_USES_GETTIMEOFFSET
  263. help
  264. This is an evaluation board for the StrongARM processor available
  265. from Digital. It has limited hardware on-board, including an
  266. Ethernet interface, two PCMCIA sockets, two serial ports and a
  267. parallel port.
  268. config ARCH_EP93XX
  269. bool "EP93xx-based"
  270. select CPU_ARM920T
  271. select ARM_AMBA
  272. select ARM_VIC
  273. select COMMON_CLKDEV
  274. select ARCH_REQUIRE_GPIOLIB
  275. select ARCH_HAS_HOLES_MEMORYMODEL
  276. select ARCH_USES_GETTIMEOFFSET
  277. help
  278. This enables support for the Cirrus EP93xx series of CPUs.
  279. config ARCH_FOOTBRIDGE
  280. bool "FootBridge"
  281. select CPU_SA110
  282. select FOOTBRIDGE
  283. select ARCH_USES_GETTIMEOFFSET
  284. help
  285. Support for systems based on the DC21285 companion chip
  286. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  287. config ARCH_MXC
  288. bool "Freescale MXC/iMX-based"
  289. select GENERIC_CLOCKEVENTS
  290. select ARCH_REQUIRE_GPIOLIB
  291. select COMMON_CLKDEV
  292. help
  293. Support for Freescale MXC/iMX-based family of processors
  294. config ARCH_STMP3XXX
  295. bool "Freescale STMP3xxx"
  296. select CPU_ARM926T
  297. select COMMON_CLKDEV
  298. select ARCH_REQUIRE_GPIOLIB
  299. select GENERIC_CLOCKEVENTS
  300. select USB_ARCH_HAS_EHCI
  301. help
  302. Support for systems based on the Freescale 3xxx CPUs.
  303. config ARCH_NETX
  304. bool "Hilscher NetX based"
  305. select CPU_ARM926T
  306. select ARM_VIC
  307. select GENERIC_CLOCKEVENTS
  308. help
  309. This enables support for systems based on the Hilscher NetX Soc
  310. config ARCH_H720X
  311. bool "Hynix HMS720x-based"
  312. select CPU_ARM720T
  313. select ISA_DMA_API
  314. select ARCH_USES_GETTIMEOFFSET
  315. help
  316. This enables support for systems based on the Hynix HMS720x
  317. config ARCH_IOP13XX
  318. bool "IOP13xx-based"
  319. depends on MMU
  320. select CPU_XSC3
  321. select PLAT_IOP
  322. select PCI
  323. select ARCH_SUPPORTS_MSI
  324. select VMSPLIT_1G
  325. help
  326. Support for Intel's IOP13XX (XScale) family of processors.
  327. config ARCH_IOP32X
  328. bool "IOP32x-based"
  329. depends on MMU
  330. select CPU_XSCALE
  331. select PLAT_IOP
  332. select PCI
  333. select ARCH_REQUIRE_GPIOLIB
  334. help
  335. Support for Intel's 80219 and IOP32X (XScale) family of
  336. processors.
  337. config ARCH_IOP33X
  338. bool "IOP33x-based"
  339. depends on MMU
  340. select CPU_XSCALE
  341. select PLAT_IOP
  342. select PCI
  343. select ARCH_REQUIRE_GPIOLIB
  344. help
  345. Support for Intel's IOP33X (XScale) family of processors.
  346. config ARCH_IXP23XX
  347. bool "IXP23XX-based"
  348. depends on MMU
  349. select CPU_XSC3
  350. select PCI
  351. select ARCH_USES_GETTIMEOFFSET
  352. help
  353. Support for Intel's IXP23xx (XScale) family of processors.
  354. config ARCH_IXP2000
  355. bool "IXP2400/2800-based"
  356. depends on MMU
  357. select CPU_XSCALE
  358. select PCI
  359. select ARCH_USES_GETTIMEOFFSET
  360. help
  361. Support for Intel's IXP2400/2800 (XScale) family of processors.
  362. config ARCH_IXP4XX
  363. bool "IXP4xx-based"
  364. depends on MMU
  365. select CPU_XSCALE
  366. select GENERIC_GPIO
  367. select GENERIC_CLOCKEVENTS
  368. select DMABOUNCE if PCI
  369. help
  370. Support for Intel's IXP4XX (XScale) family of processors.
  371. config ARCH_L7200
  372. bool "LinkUp-L7200"
  373. select CPU_ARM720T
  374. select FIQ
  375. select ARCH_USES_GETTIMEOFFSET
  376. help
  377. Say Y here if you intend to run this kernel on a LinkUp Systems
  378. L7200 Software Development Board which uses an ARM720T processor.
  379. Information on this board can be obtained at:
  380. <http://www.linkupsys.com/>
  381. If you have any questions or comments about the Linux kernel port
  382. to this board, send e-mail to <sjhill@cotw.com>.
  383. config ARCH_DOVE
  384. bool "Marvell Dove"
  385. select PCI
  386. select ARCH_REQUIRE_GPIOLIB
  387. select GENERIC_CLOCKEVENTS
  388. select PLAT_ORION
  389. help
  390. Support for the Marvell Dove SoC 88AP510
  391. config ARCH_KIRKWOOD
  392. bool "Marvell Kirkwood"
  393. select CPU_FEROCEON
  394. select PCI
  395. select ARCH_REQUIRE_GPIOLIB
  396. select GENERIC_CLOCKEVENTS
  397. select PLAT_ORION
  398. help
  399. Support for the following Marvell Kirkwood series SoCs:
  400. 88F6180, 88F6192 and 88F6281.
  401. config ARCH_LOKI
  402. bool "Marvell Loki (88RC8480)"
  403. select CPU_FEROCEON
  404. select GENERIC_CLOCKEVENTS
  405. select PLAT_ORION
  406. help
  407. Support for the Marvell Loki (88RC8480) SoC.
  408. config ARCH_LPC32XX
  409. bool "NXP LPC32XX"
  410. select CPU_ARM926T
  411. select ARCH_REQUIRE_GPIOLIB
  412. select HAVE_IDE
  413. select ARM_AMBA
  414. select USB_ARCH_HAS_OHCI
  415. select COMMON_CLKDEV
  416. select GENERIC_TIME
  417. select GENERIC_CLOCKEVENTS
  418. help
  419. Support for the NXP LPC32XX family of processors
  420. config ARCH_MV78XX0
  421. bool "Marvell MV78xx0"
  422. select CPU_FEROCEON
  423. select PCI
  424. select ARCH_REQUIRE_GPIOLIB
  425. select GENERIC_CLOCKEVENTS
  426. select PLAT_ORION
  427. help
  428. Support for the following Marvell MV78xx0 series SoCs:
  429. MV781x0, MV782x0.
  430. config ARCH_ORION5X
  431. bool "Marvell Orion"
  432. depends on MMU
  433. select CPU_FEROCEON
  434. select PCI
  435. select ARCH_REQUIRE_GPIOLIB
  436. select GENERIC_CLOCKEVENTS
  437. select PLAT_ORION
  438. help
  439. Support for the following Marvell Orion 5x series SoCs:
  440. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  441. Orion-2 (5281), Orion-1-90 (6183).
  442. config ARCH_MMP
  443. bool "Marvell PXA168/910/MMP2"
  444. depends on MMU
  445. select ARCH_REQUIRE_GPIOLIB
  446. select COMMON_CLKDEV
  447. select GENERIC_CLOCKEVENTS
  448. select TICK_ONESHOT
  449. select PLAT_PXA
  450. help
  451. Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
  452. config ARCH_KS8695
  453. bool "Micrel/Kendin KS8695"
  454. select CPU_ARM922T
  455. select ARCH_REQUIRE_GPIOLIB
  456. select ARCH_USES_GETTIMEOFFSET
  457. help
  458. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  459. System-on-Chip devices.
  460. config ARCH_NS9XXX
  461. bool "NetSilicon NS9xxx"
  462. select CPU_ARM926T
  463. select GENERIC_GPIO
  464. select GENERIC_CLOCKEVENTS
  465. select HAVE_CLK
  466. help
  467. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  468. System.
  469. <http://www.digi.com/products/microprocessors/index.jsp>
  470. config ARCH_W90X900
  471. bool "Nuvoton W90X900 CPU"
  472. select CPU_ARM926T
  473. select ARCH_REQUIRE_GPIOLIB
  474. select COMMON_CLKDEV
  475. select GENERIC_CLOCKEVENTS
  476. help
  477. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  478. At present, the w90x900 has been renamed nuc900, regarding
  479. the ARM series product line, you can login the following
  480. link address to know more.
  481. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  482. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  483. config ARCH_NUC93X
  484. bool "Nuvoton NUC93X CPU"
  485. select CPU_ARM926T
  486. select COMMON_CLKDEV
  487. help
  488. Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
  489. low-power and high performance MPEG-4/JPEG multimedia controller chip.
  490. config ARCH_PNX4008
  491. bool "Philips Nexperia PNX4008 Mobile"
  492. select CPU_ARM926T
  493. select COMMON_CLKDEV
  494. select ARCH_USES_GETTIMEOFFSET
  495. help
  496. This enables support for Philips PNX4008 mobile platform.
  497. config ARCH_PXA
  498. bool "PXA2xx/PXA3xx-based"
  499. depends on MMU
  500. select ARCH_MTD_XIP
  501. select ARCH_HAS_CPUFREQ
  502. select COMMON_CLKDEV
  503. select ARCH_REQUIRE_GPIOLIB
  504. select GENERIC_CLOCKEVENTS
  505. select TICK_ONESHOT
  506. select PLAT_PXA
  507. help
  508. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  509. config ARCH_MSM
  510. bool "Qualcomm MSM"
  511. select HAVE_CLK
  512. select GENERIC_CLOCKEVENTS
  513. help
  514. Support for Qualcomm MSM/QSD based systems. This runs on the
  515. apps processor of the MSM/QSD and depends on a shared memory
  516. interface to the modem processor which runs the baseband
  517. stack and controls some vital subsystems
  518. (clock and power control, etc).
  519. config ARCH_SHMOBILE
  520. bool "Renesas SH-Mobile"
  521. help
  522. Support for Renesas's SH-Mobile ARM platforms
  523. config ARCH_RPC
  524. bool "RiscPC"
  525. select ARCH_ACORN
  526. select FIQ
  527. select TIMER_ACORN
  528. select ARCH_MAY_HAVE_PC_FDC
  529. select HAVE_PATA_PLATFORM
  530. select ISA_DMA_API
  531. select NO_IOPORT
  532. select ARCH_SPARSEMEM_ENABLE
  533. select ARCH_USES_GETTIMEOFFSET
  534. help
  535. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  536. CD-ROM interface, serial and parallel port, and the floppy drive.
  537. config ARCH_SA1100
  538. bool "SA1100-based"
  539. select CPU_SA1100
  540. select ISA
  541. select ARCH_SPARSEMEM_ENABLE
  542. select ARCH_MTD_XIP
  543. select ARCH_HAS_CPUFREQ
  544. select CPU_FREQ
  545. select GENERIC_CLOCKEVENTS
  546. select HAVE_CLK
  547. select TICK_ONESHOT
  548. select ARCH_REQUIRE_GPIOLIB
  549. help
  550. Support for StrongARM 11x0 based boards.
  551. config ARCH_S3C2410
  552. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
  553. select GENERIC_GPIO
  554. select ARCH_HAS_CPUFREQ
  555. select HAVE_CLK
  556. select ARCH_USES_GETTIMEOFFSET
  557. help
  558. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  559. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  560. the Samsung SMDK2410 development board (and derivatives).
  561. Note, the S3C2416 and the S3C2450 are so close that they even share
  562. the same SoC ID code. This means that there is no seperate machine
  563. directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
  564. config ARCH_S3C64XX
  565. bool "Samsung S3C64XX"
  566. select PLAT_SAMSUNG
  567. select CPU_V6
  568. select ARM_VIC
  569. select HAVE_CLK
  570. select NO_IOPORT
  571. select ARCH_USES_GETTIMEOFFSET
  572. select ARCH_HAS_CPUFREQ
  573. select ARCH_REQUIRE_GPIOLIB
  574. select SAMSUNG_CLKSRC
  575. select SAMSUNG_IRQ_VIC_TIMER
  576. select SAMSUNG_IRQ_UART
  577. select S3C_GPIO_TRACK
  578. select S3C_GPIO_PULL_UPDOWN
  579. select S3C_GPIO_CFG_S3C24XX
  580. select S3C_GPIO_CFG_S3C64XX
  581. select S3C_DEV_NAND
  582. select USB_ARCH_HAS_OHCI
  583. select SAMSUNG_GPIOLIB_4BIT
  584. help
  585. Samsung S3C64XX series based systems
  586. config ARCH_S5P6440
  587. bool "Samsung S5P6440"
  588. select CPU_V6
  589. select GENERIC_GPIO
  590. select HAVE_CLK
  591. select ARCH_USES_GETTIMEOFFSET
  592. help
  593. Samsung S5P6440 CPU based systems
  594. config ARCH_S5P6442
  595. bool "Samsung S5P6442"
  596. select CPU_V6
  597. select GENERIC_GPIO
  598. select HAVE_CLK
  599. select ARCH_USES_GETTIMEOFFSET
  600. help
  601. Samsung S5P6442 CPU based systems
  602. config ARCH_S5PC100
  603. bool "Samsung S5PC100"
  604. select GENERIC_GPIO
  605. select HAVE_CLK
  606. select CPU_V7
  607. select ARM_L1_CACHE_SHIFT_6
  608. select ARCH_USES_GETTIMEOFFSET
  609. help
  610. Samsung S5PC100 series based systems
  611. config ARCH_S5PV210
  612. bool "Samsung S5PV210/S5PC110"
  613. select CPU_V7
  614. select GENERIC_GPIO
  615. select HAVE_CLK
  616. select ARM_L1_CACHE_SHIFT_6
  617. select ARCH_USES_GETTIMEOFFSET
  618. help
  619. Samsung S5PV210/S5PC110 series based systems
  620. config ARCH_SHARK
  621. bool "Shark"
  622. select CPU_SA110
  623. select ISA
  624. select ISA_DMA
  625. select ZONE_DMA
  626. select PCI
  627. select ARCH_USES_GETTIMEOFFSET
  628. help
  629. Support for the StrongARM based Digital DNARD machine, also known
  630. as "Shark" (<http://www.shark-linux.de/shark.html>).
  631. config ARCH_LH7A40X
  632. bool "Sharp LH7A40X"
  633. select CPU_ARM922T
  634. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  635. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  636. select ARCH_USES_GETTIMEOFFSET
  637. help
  638. Say Y here for systems based on one of the Sharp LH7A40X
  639. System on a Chip processors. These CPUs include an ARM922T
  640. core with a wide array of integrated devices for
  641. hand-held and low-power applications.
  642. config ARCH_U300
  643. bool "ST-Ericsson U300 Series"
  644. depends on MMU
  645. select CPU_ARM926T
  646. select HAVE_TCM
  647. select ARM_AMBA
  648. select ARM_VIC
  649. select GENERIC_CLOCKEVENTS
  650. select COMMON_CLKDEV
  651. select GENERIC_GPIO
  652. help
  653. Support for ST-Ericsson U300 series mobile platforms.
  654. config ARCH_U8500
  655. bool "ST-Ericsson U8500 Series"
  656. select CPU_V7
  657. select ARM_AMBA
  658. select GENERIC_CLOCKEVENTS
  659. select COMMON_CLKDEV
  660. select ARCH_REQUIRE_GPIOLIB
  661. help
  662. Support for ST-Ericsson's Ux500 architecture
  663. config ARCH_NOMADIK
  664. bool "STMicroelectronics Nomadik"
  665. select ARM_AMBA
  666. select ARM_VIC
  667. select CPU_ARM926T
  668. select COMMON_CLKDEV
  669. select GENERIC_CLOCKEVENTS
  670. select ARCH_REQUIRE_GPIOLIB
  671. help
  672. Support for the Nomadik platform by ST-Ericsson
  673. config ARCH_DAVINCI
  674. bool "TI DaVinci"
  675. select GENERIC_CLOCKEVENTS
  676. select ARCH_REQUIRE_GPIOLIB
  677. select ZONE_DMA
  678. select HAVE_IDE
  679. select COMMON_CLKDEV
  680. select GENERIC_ALLOCATOR
  681. select ARCH_HAS_HOLES_MEMORYMODEL
  682. help
  683. Support for TI's DaVinci platform.
  684. config ARCH_OMAP
  685. bool "TI OMAP"
  686. select HAVE_CLK
  687. select ARCH_REQUIRE_GPIOLIB
  688. select ARCH_HAS_CPUFREQ
  689. select GENERIC_CLOCKEVENTS
  690. select ARCH_HAS_HOLES_MEMORYMODEL
  691. help
  692. Support for TI's OMAP platform (OMAP1 and OMAP2).
  693. config PLAT_SPEAR
  694. bool "ST SPEAr"
  695. select ARM_AMBA
  696. select ARCH_REQUIRE_GPIOLIB
  697. select COMMON_CLKDEV
  698. select GENERIC_CLOCKEVENTS
  699. select HAVE_CLK
  700. help
  701. Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
  702. endchoice
  703. #
  704. # This is sorted alphabetically by mach-* pathname. However, plat-*
  705. # Kconfigs may be included either alphabetically (according to the
  706. # plat- suffix) or along side the corresponding mach-* source.
  707. #
  708. source "arch/arm/mach-aaec2000/Kconfig"
  709. source "arch/arm/mach-at91/Kconfig"
  710. source "arch/arm/mach-bcmring/Kconfig"
  711. source "arch/arm/mach-clps711x/Kconfig"
  712. source "arch/arm/mach-cns3xxx/Kconfig"
  713. source "arch/arm/mach-davinci/Kconfig"
  714. source "arch/arm/mach-dove/Kconfig"
  715. source "arch/arm/mach-ep93xx/Kconfig"
  716. source "arch/arm/mach-footbridge/Kconfig"
  717. source "arch/arm/mach-gemini/Kconfig"
  718. source "arch/arm/mach-h720x/Kconfig"
  719. source "arch/arm/mach-integrator/Kconfig"
  720. source "arch/arm/mach-iop32x/Kconfig"
  721. source "arch/arm/mach-iop33x/Kconfig"
  722. source "arch/arm/mach-iop13xx/Kconfig"
  723. source "arch/arm/mach-ixp4xx/Kconfig"
  724. source "arch/arm/mach-ixp2000/Kconfig"
  725. source "arch/arm/mach-ixp23xx/Kconfig"
  726. source "arch/arm/mach-kirkwood/Kconfig"
  727. source "arch/arm/mach-ks8695/Kconfig"
  728. source "arch/arm/mach-lh7a40x/Kconfig"
  729. source "arch/arm/mach-loki/Kconfig"
  730. source "arch/arm/mach-lpc32xx/Kconfig"
  731. source "arch/arm/mach-msm/Kconfig"
  732. source "arch/arm/mach-mv78xx0/Kconfig"
  733. source "arch/arm/plat-mxc/Kconfig"
  734. source "arch/arm/mach-netx/Kconfig"
  735. source "arch/arm/mach-nomadik/Kconfig"
  736. source "arch/arm/plat-nomadik/Kconfig"
  737. source "arch/arm/mach-ns9xxx/Kconfig"
  738. source "arch/arm/mach-nuc93x/Kconfig"
  739. source "arch/arm/plat-omap/Kconfig"
  740. source "arch/arm/mach-omap1/Kconfig"
  741. source "arch/arm/mach-omap2/Kconfig"
  742. source "arch/arm/mach-orion5x/Kconfig"
  743. source "arch/arm/mach-pxa/Kconfig"
  744. source "arch/arm/plat-pxa/Kconfig"
  745. source "arch/arm/mach-mmp/Kconfig"
  746. source "arch/arm/mach-realview/Kconfig"
  747. source "arch/arm/mach-sa1100/Kconfig"
  748. source "arch/arm/plat-samsung/Kconfig"
  749. source "arch/arm/plat-s3c24xx/Kconfig"
  750. source "arch/arm/plat-s5p/Kconfig"
  751. source "arch/arm/plat-spear/Kconfig"
  752. if ARCH_S3C2410
  753. source "arch/arm/mach-s3c2400/Kconfig"
  754. source "arch/arm/mach-s3c2410/Kconfig"
  755. source "arch/arm/mach-s3c2412/Kconfig"
  756. source "arch/arm/mach-s3c2416/Kconfig"
  757. source "arch/arm/mach-s3c2440/Kconfig"
  758. source "arch/arm/mach-s3c2443/Kconfig"
  759. endif
  760. if ARCH_S3C64XX
  761. source "arch/arm/mach-s3c64xx/Kconfig"
  762. endif
  763. source "arch/arm/mach-s5p6440/Kconfig"
  764. source "arch/arm/mach-s5p6442/Kconfig"
  765. source "arch/arm/mach-s5pc100/Kconfig"
  766. source "arch/arm/mach-s5pv210/Kconfig"
  767. source "arch/arm/mach-shmobile/Kconfig"
  768. source "arch/arm/plat-stmp3xxx/Kconfig"
  769. source "arch/arm/mach-u300/Kconfig"
  770. source "arch/arm/mach-ux500/Kconfig"
  771. source "arch/arm/mach-versatile/Kconfig"
  772. source "arch/arm/mach-vexpress/Kconfig"
  773. source "arch/arm/mach-w90x900/Kconfig"
  774. # Definitions to make life easier
  775. config ARCH_ACORN
  776. bool
  777. config PLAT_IOP
  778. bool
  779. select GENERIC_CLOCKEVENTS
  780. config PLAT_ORION
  781. bool
  782. config PLAT_PXA
  783. bool
  784. config PLAT_VERSATILE
  785. bool
  786. config ARM_TIMER_SP804
  787. bool
  788. source arch/arm/mm/Kconfig
  789. config IWMMXT
  790. bool "Enable iWMMXt support"
  791. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
  792. default y if PXA27x || PXA3xx || ARCH_MMP
  793. help
  794. Enable support for iWMMXt context switching at run time if
  795. running on a CPU that supports it.
  796. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  797. config XSCALE_PMU
  798. bool
  799. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  800. default y
  801. config CPU_HAS_PMU
  802. depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
  803. (!ARCH_OMAP3 || OMAP3_EMU)
  804. default y
  805. bool
  806. if !MMU
  807. source "arch/arm/Kconfig-nommu"
  808. endif
  809. config ARM_ERRATA_411920
  810. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  811. depends on CPU_V6 && !SMP
  812. help
  813. Invalidation of the Instruction Cache operation can
  814. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  815. It does not affect the MPCore. This option enables the ARM Ltd.
  816. recommended workaround.
  817. config ARM_ERRATA_430973
  818. bool "ARM errata: Stale prediction on replaced interworking branch"
  819. depends on CPU_V7
  820. help
  821. This option enables the workaround for the 430973 Cortex-A8
  822. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  823. interworking branch is replaced with another code sequence at the
  824. same virtual address, whether due to self-modifying code or virtual
  825. to physical address re-mapping, Cortex-A8 does not recover from the
  826. stale interworking branch prediction. This results in Cortex-A8
  827. executing the new code sequence in the incorrect ARM or Thumb state.
  828. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  829. and also flushes the branch target cache at every context switch.
  830. Note that setting specific bits in the ACTLR register may not be
  831. available in non-secure mode.
  832. config ARM_ERRATA_458693
  833. bool "ARM errata: Processor deadlock when a false hazard is created"
  834. depends on CPU_V7
  835. help
  836. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  837. erratum. For very specific sequences of memory operations, it is
  838. possible for a hazard condition intended for a cache line to instead
  839. be incorrectly associated with a different cache line. This false
  840. hazard might then cause a processor deadlock. The workaround enables
  841. the L1 caching of the NEON accesses and disables the PLD instruction
  842. in the ACTLR register. Note that setting specific bits in the ACTLR
  843. register may not be available in non-secure mode.
  844. config ARM_ERRATA_460075
  845. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  846. depends on CPU_V7
  847. help
  848. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  849. erratum. Any asynchronous access to the L2 cache may encounter a
  850. situation in which recent store transactions to the L2 cache are lost
  851. and overwritten with stale memory contents from external memory. The
  852. workaround disables the write-allocate mode for the L2 cache via the
  853. ACTLR register. Note that setting specific bits in the ACTLR register
  854. may not be available in non-secure mode.
  855. config PL310_ERRATA_588369
  856. bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
  857. depends on CACHE_L2X0 && ARCH_OMAP4
  858. help
  859. The PL310 L2 cache controller implements three types of Clean &
  860. Invalidate maintenance operations: by Physical Address
  861. (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
  862. They are architecturally defined to behave as the execution of a
  863. clean operation followed immediately by an invalidate operation,
  864. both performing to the same memory location. This functionality
  865. is not correctly implemented in PL310 as clean lines are not
  866. invalidated as a result of these operations. Note that this errata
  867. uses Texas Instrument's secure monitor api.
  868. endmenu
  869. source "arch/arm/common/Kconfig"
  870. config FORCE_MAX_ZONEORDER
  871. int
  872. depends on SA1111
  873. default "9"
  874. menu "Bus support"
  875. config ARM_AMBA
  876. bool
  877. config ISA
  878. bool
  879. help
  880. Find out whether you have ISA slots on your motherboard. ISA is the
  881. name of a bus system, i.e. the way the CPU talks to the other stuff
  882. inside your box. Other bus systems are PCI, EISA, MicroChannel
  883. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  884. newer boards don't support it. If you have ISA, say Y, otherwise N.
  885. # Select ISA DMA controller support
  886. config ISA_DMA
  887. bool
  888. select ISA_DMA_API
  889. # Select ISA DMA interface
  890. config ISA_DMA_API
  891. bool
  892. config PCI
  893. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  894. help
  895. Find out whether you have a PCI motherboard. PCI is the name of a
  896. bus system, i.e. the way the CPU talks to the other stuff inside
  897. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  898. VESA. If you have PCI, say Y, otherwise N.
  899. config PCI_DOMAINS
  900. bool
  901. depends on PCI
  902. config PCI_SYSCALL
  903. def_bool PCI
  904. # Select the host bridge type
  905. config PCI_HOST_VIA82C505
  906. bool
  907. depends on PCI && ARCH_SHARK
  908. default y
  909. config PCI_HOST_ITE8152
  910. bool
  911. depends on PCI && MACH_ARMCORE
  912. default y
  913. select DMABOUNCE
  914. source "drivers/pci/Kconfig"
  915. source "drivers/pcmcia/Kconfig"
  916. endmenu
  917. menu "Kernel Features"
  918. source "kernel/time/Kconfig"
  919. config SMP
  920. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  921. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
  922. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
  923. ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
  924. depends on GENERIC_CLOCKEVENTS
  925. select USE_GENERIC_SMP_HELPERS
  926. select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
  927. help
  928. This enables support for systems with more than one CPU. If you have
  929. a system with only one CPU, like most personal computers, say N. If
  930. you have a system with more than one CPU, say Y.
  931. If you say N here, the kernel will run on single and multiprocessor
  932. machines, but will use only one CPU of a multiprocessor machine. If
  933. you say Y here, the kernel will run on many, but not all, single
  934. processor machines. On a single processor machine, the kernel will
  935. run faster if you say N here.
  936. See also <file:Documentation/i386/IO-APIC.txt>,
  937. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  938. <http://www.linuxdoc.org/docs.html#howto>.
  939. If you don't know what to do here, say N.
  940. config HAVE_ARM_SCU
  941. bool
  942. depends on SMP
  943. help
  944. This option enables support for the ARM system coherency unit
  945. config HAVE_ARM_TWD
  946. bool
  947. depends on SMP
  948. help
  949. This options enables support for the ARM timer and watchdog unit
  950. choice
  951. prompt "Memory split"
  952. default VMSPLIT_3G
  953. help
  954. Select the desired split between kernel and user memory.
  955. If you are not absolutely sure what you are doing, leave this
  956. option alone!
  957. config VMSPLIT_3G
  958. bool "3G/1G user/kernel split"
  959. config VMSPLIT_2G
  960. bool "2G/2G user/kernel split"
  961. config VMSPLIT_1G
  962. bool "1G/3G user/kernel split"
  963. endchoice
  964. config PAGE_OFFSET
  965. hex
  966. default 0x40000000 if VMSPLIT_1G
  967. default 0x80000000 if VMSPLIT_2G
  968. default 0xC0000000
  969. config NR_CPUS
  970. int "Maximum number of CPUs (2-32)"
  971. range 2 32
  972. depends on SMP
  973. default "4"
  974. config HOTPLUG_CPU
  975. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  976. depends on SMP && HOTPLUG && EXPERIMENTAL
  977. help
  978. Say Y here to experiment with turning CPUs off and on. CPUs
  979. can be controlled through /sys/devices/system/cpu.
  980. config LOCAL_TIMERS
  981. bool "Use local timer interrupts"
  982. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
  983. REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
  984. default y
  985. select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
  986. help
  987. Enable support for local timers on SMP platforms, rather then the
  988. legacy IPI broadcast method. Local timers allows the system
  989. accounting to be spread across the timer interval, preventing a
  990. "thundering herd" at every timer tick.
  991. source kernel/Kconfig.preempt
  992. config HZ
  993. int
  994. default 128 if ARCH_L7200
  995. default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
  996. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  997. default AT91_TIMER_HZ if ARCH_AT91
  998. default 100
  999. config THUMB2_KERNEL
  1000. bool "Compile the kernel in Thumb-2 mode"
  1001. depends on CPU_V7 && EXPERIMENTAL
  1002. select AEABI
  1003. select ARM_ASM_UNIFIED
  1004. help
  1005. By enabling this option, the kernel will be compiled in
  1006. Thumb-2 mode. A compiler/assembler that understand the unified
  1007. ARM-Thumb syntax is needed.
  1008. If unsure, say N.
  1009. config ARM_ASM_UNIFIED
  1010. bool
  1011. config AEABI
  1012. bool "Use the ARM EABI to compile the kernel"
  1013. help
  1014. This option allows for the kernel to be compiled using the latest
  1015. ARM ABI (aka EABI). This is only useful if you are using a user
  1016. space environment that is also compiled with EABI.
  1017. Since there are major incompatibilities between the legacy ABI and
  1018. EABI, especially with regard to structure member alignment, this
  1019. option also changes the kernel syscall calling convention to
  1020. disambiguate both ABIs and allow for backward compatibility support
  1021. (selected with CONFIG_OABI_COMPAT).
  1022. To use this you need GCC version 4.0.0 or later.
  1023. config OABI_COMPAT
  1024. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  1025. depends on AEABI && EXPERIMENTAL
  1026. default y
  1027. help
  1028. This option preserves the old syscall interface along with the
  1029. new (ARM EABI) one. It also provides a compatibility layer to
  1030. intercept syscalls that have structure arguments which layout
  1031. in memory differs between the legacy ABI and the new ARM EABI
  1032. (only for non "thumb" binaries). This option adds a tiny
  1033. overhead to all syscalls and produces a slightly larger kernel.
  1034. If you know you'll be using only pure EABI user space then you
  1035. can say N here. If this option is not selected and you attempt
  1036. to execute a legacy ABI binary then the result will be
  1037. UNPREDICTABLE (in fact it can be predicted that it won't work
  1038. at all). If in doubt say Y.
  1039. config ARCH_HAS_HOLES_MEMORYMODEL
  1040. bool
  1041. # Discontigmem is deprecated
  1042. config ARCH_DISCONTIGMEM_ENABLE
  1043. bool
  1044. config ARCH_SPARSEMEM_ENABLE
  1045. bool
  1046. config ARCH_SPARSEMEM_DEFAULT
  1047. def_bool ARCH_SPARSEMEM_ENABLE
  1048. config ARCH_SELECT_MEMORY_MODEL
  1049. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  1050. config NODES_SHIFT
  1051. int
  1052. default "4" if ARCH_LH7A40X
  1053. default "2"
  1054. depends on NEED_MULTIPLE_NODES
  1055. config HIGHMEM
  1056. bool "High Memory Support (EXPERIMENTAL)"
  1057. depends on MMU && EXPERIMENTAL
  1058. help
  1059. The address space of ARM processors is only 4 Gigabytes large
  1060. and it has to accommodate user address space, kernel address
  1061. space as well as some memory mapped IO. That means that, if you
  1062. have a large amount of physical memory and/or IO, not all of the
  1063. memory can be "permanently mapped" by the kernel. The physical
  1064. memory that is not permanently mapped is called "high memory".
  1065. Depending on the selected kernel/user memory split, minimum
  1066. vmalloc space and actual amount of RAM, you may not need this
  1067. option which should result in a slightly faster kernel.
  1068. If unsure, say n.
  1069. config HIGHPTE
  1070. bool "Allocate 2nd-level pagetables from highmem"
  1071. depends on HIGHMEM
  1072. depends on !OUTER_CACHE
  1073. config HW_PERF_EVENTS
  1074. bool "Enable hardware performance counter support for perf events"
  1075. depends on PERF_EVENTS && CPU_HAS_PMU
  1076. default y
  1077. help
  1078. Enable hardware performance counter support for perf events. If
  1079. disabled, perf events will use software events only.
  1080. source "mm/Kconfig"
  1081. config LEDS
  1082. bool "Timer and CPU usage LEDs"
  1083. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  1084. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  1085. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  1086. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  1087. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  1088. ARCH_AT91 || ARCH_DAVINCI || \
  1089. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  1090. help
  1091. If you say Y here, the LEDs on your machine will be used
  1092. to provide useful information about your current system status.
  1093. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  1094. be able to select which LEDs are active using the options below. If
  1095. you are compiling a kernel for the EBSA-110 or the LART however, the
  1096. red LED will simply flash regularly to indicate that the system is
  1097. still functional. It is safe to say Y here if you have a CATS
  1098. system, but the driver will do nothing.
  1099. config LEDS_TIMER
  1100. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  1101. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1102. || MACH_OMAP_PERSEUS2
  1103. depends on LEDS
  1104. depends on !GENERIC_CLOCKEVENTS
  1105. default y if ARCH_EBSA110
  1106. help
  1107. If you say Y here, one of the system LEDs (the green one on the
  1108. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1109. will flash regularly to indicate that the system is still
  1110. operational. This is mainly useful to kernel hackers who are
  1111. debugging unstable kernels.
  1112. The LART uses the same LED for both Timer LED and CPU usage LED
  1113. functions. You may choose to use both, but the Timer LED function
  1114. will overrule the CPU usage LED.
  1115. config LEDS_CPU
  1116. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1117. !ARCH_OMAP) \
  1118. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1119. || MACH_OMAP_PERSEUS2
  1120. depends on LEDS
  1121. help
  1122. If you say Y here, the red LED will be used to give a good real
  1123. time indication of CPU usage, by lighting whenever the idle task
  1124. is not currently executing.
  1125. The LART uses the same LED for both Timer LED and CPU usage LED
  1126. functions. You may choose to use both, but the Timer LED function
  1127. will overrule the CPU usage LED.
  1128. config ALIGNMENT_TRAP
  1129. bool
  1130. depends on CPU_CP15_MMU
  1131. default y if !ARCH_EBSA110
  1132. select HAVE_PROC_CPU if PROC_FS
  1133. help
  1134. ARM processors cannot fetch/store information which is not
  1135. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1136. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1137. fetch/store instructions will be emulated in software if you say
  1138. here, which has a severe performance impact. This is necessary for
  1139. correct operation of some network protocols. With an IP-only
  1140. configuration it is safe to say N, otherwise say Y.
  1141. config UACCESS_WITH_MEMCPY
  1142. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1143. depends on MMU && EXPERIMENTAL
  1144. default y if CPU_FEROCEON
  1145. help
  1146. Implement faster copy_to_user and clear_user methods for CPU
  1147. cores where a 8-word STM instruction give significantly higher
  1148. memory write throughput than a sequence of individual 32bit stores.
  1149. A possible side effect is a slight increase in scheduling latency
  1150. between threads sharing the same address space if they invoke
  1151. such copy operations with large buffers.
  1152. However, if the CPU data cache is using a write-allocate mode,
  1153. this option is unlikely to provide any performance gain.
  1154. endmenu
  1155. menu "Boot options"
  1156. # Compressed boot loader in ROM. Yes, we really want to ask about
  1157. # TEXT and BSS so we preserve their values in the config files.
  1158. config ZBOOT_ROM_TEXT
  1159. hex "Compressed ROM boot loader base address"
  1160. default "0"
  1161. help
  1162. The physical address at which the ROM-able zImage is to be
  1163. placed in the target. Platforms which normally make use of
  1164. ROM-able zImage formats normally set this to a suitable
  1165. value in their defconfig file.
  1166. If ZBOOT_ROM is not enabled, this has no effect.
  1167. config ZBOOT_ROM_BSS
  1168. hex "Compressed ROM boot loader BSS address"
  1169. default "0"
  1170. help
  1171. The base address of an area of read/write memory in the target
  1172. for the ROM-able zImage which must be available while the
  1173. decompressor is running. It must be large enough to hold the
  1174. entire decompressed kernel plus an additional 128 KiB.
  1175. Platforms which normally make use of ROM-able zImage formats
  1176. normally set this to a suitable value in their defconfig file.
  1177. If ZBOOT_ROM is not enabled, this has no effect.
  1178. config ZBOOT_ROM
  1179. bool "Compressed boot loader in ROM/flash"
  1180. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1181. help
  1182. Say Y here if you intend to execute your compressed kernel image
  1183. (zImage) directly from ROM or flash. If unsure, say N.
  1184. config CMDLINE
  1185. string "Default kernel command string"
  1186. default ""
  1187. help
  1188. On some architectures (EBSA110 and CATS), there is currently no way
  1189. for the boot loader to pass arguments to the kernel. For these
  1190. architectures, you should supply some command-line options at build
  1191. time by entering them here. As a minimum, you should specify the
  1192. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1193. config CMDLINE_FORCE
  1194. bool "Always use the default kernel command string"
  1195. depends on CMDLINE != ""
  1196. help
  1197. Always use the default kernel command string, even if the boot
  1198. loader passes other arguments to the kernel.
  1199. This is useful if you cannot or don't want to change the
  1200. command-line options your boot loader passes to the kernel.
  1201. If unsure, say N.
  1202. config XIP_KERNEL
  1203. bool "Kernel Execute-In-Place from ROM"
  1204. depends on !ZBOOT_ROM
  1205. help
  1206. Execute-In-Place allows the kernel to run from non-volatile storage
  1207. directly addressable by the CPU, such as NOR flash. This saves RAM
  1208. space since the text section of the kernel is not loaded from flash
  1209. to RAM. Read-write sections, such as the data section and stack,
  1210. are still copied to RAM. The XIP kernel is not compressed since
  1211. it has to run directly from flash, so it will take more space to
  1212. store it. The flash address used to link the kernel object files,
  1213. and for storing it, is configuration dependent. Therefore, if you
  1214. say Y here, you must know the proper physical address where to
  1215. store the kernel image depending on your own flash memory usage.
  1216. Also note that the make target becomes "make xipImage" rather than
  1217. "make zImage" or "make Image". The final kernel binary to put in
  1218. ROM memory will be arch/arm/boot/xipImage.
  1219. If unsure, say N.
  1220. config XIP_PHYS_ADDR
  1221. hex "XIP Kernel Physical Location"
  1222. depends on XIP_KERNEL
  1223. default "0x00080000"
  1224. help
  1225. This is the physical address in your flash memory the kernel will
  1226. be linked for and stored to. This address is dependent on your
  1227. own flash usage.
  1228. config KEXEC
  1229. bool "Kexec system call (EXPERIMENTAL)"
  1230. depends on EXPERIMENTAL
  1231. help
  1232. kexec is a system call that implements the ability to shutdown your
  1233. current kernel, and to start another kernel. It is like a reboot
  1234. but it is independent of the system firmware. And like a reboot
  1235. you can start any kernel with it, not just Linux.
  1236. It is an ongoing process to be certain the hardware in a machine
  1237. is properly shutdown, so do not be surprised if this code does not
  1238. initially work for you. It may help to enable device hotplugging
  1239. support.
  1240. config ATAGS_PROC
  1241. bool "Export atags in procfs"
  1242. depends on KEXEC
  1243. default y
  1244. help
  1245. Should the atags used to boot the kernel be exported in an "atags"
  1246. file in procfs. Useful with kexec.
  1247. endmenu
  1248. menu "CPU Power Management"
  1249. if ARCH_HAS_CPUFREQ
  1250. source "drivers/cpufreq/Kconfig"
  1251. config CPU_FREQ_SA1100
  1252. bool
  1253. config CPU_FREQ_SA1110
  1254. bool
  1255. config CPU_FREQ_INTEGRATOR
  1256. tristate "CPUfreq driver for ARM Integrator CPUs"
  1257. depends on ARCH_INTEGRATOR && CPU_FREQ
  1258. default y
  1259. help
  1260. This enables the CPUfreq driver for ARM Integrator CPUs.
  1261. For details, take a look at <file:Documentation/cpu-freq>.
  1262. If in doubt, say Y.
  1263. config CPU_FREQ_PXA
  1264. bool
  1265. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1266. default y
  1267. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1268. config CPU_FREQ_S3C64XX
  1269. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1270. depends on CPU_FREQ && CPU_S3C6410
  1271. config CPU_FREQ_S3C
  1272. bool
  1273. help
  1274. Internal configuration node for common cpufreq on Samsung SoC
  1275. config CPU_FREQ_S3C24XX
  1276. bool "CPUfreq driver for Samsung S3C24XX series CPUs"
  1277. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1278. select CPU_FREQ_S3C
  1279. help
  1280. This enables the CPUfreq driver for the Samsung S3C24XX family
  1281. of CPUs.
  1282. For details, take a look at <file:Documentation/cpu-freq>.
  1283. If in doubt, say N.
  1284. config CPU_FREQ_S3C24XX_PLL
  1285. bool "Support CPUfreq changing of PLL frequency"
  1286. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1287. help
  1288. Compile in support for changing the PLL frequency from the
  1289. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1290. after a frequency change, so by default it is not enabled.
  1291. This also means that the PLL tables for the selected CPU(s) will
  1292. be built which may increase the size of the kernel image.
  1293. config CPU_FREQ_S3C24XX_DEBUG
  1294. bool "Debug CPUfreq Samsung driver core"
  1295. depends on CPU_FREQ_S3C24XX
  1296. help
  1297. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1298. config CPU_FREQ_S3C24XX_IODEBUG
  1299. bool "Debug CPUfreq Samsung driver IO timing"
  1300. depends on CPU_FREQ_S3C24XX
  1301. help
  1302. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1303. config CPU_FREQ_S3C24XX_DEBUGFS
  1304. bool "Export debugfs for CPUFreq"
  1305. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1306. help
  1307. Export status information via debugfs.
  1308. endif
  1309. source "drivers/cpuidle/Kconfig"
  1310. endmenu
  1311. menu "Floating point emulation"
  1312. comment "At least one emulation must be selected"
  1313. config FPE_NWFPE
  1314. bool "NWFPE math emulation"
  1315. depends on !AEABI || OABI_COMPAT
  1316. ---help---
  1317. Say Y to include the NWFPE floating point emulator in the kernel.
  1318. This is necessary to run most binaries. Linux does not currently
  1319. support floating point hardware so you need to say Y here even if
  1320. your machine has an FPA or floating point co-processor podule.
  1321. You may say N here if you are going to load the Acorn FPEmulator
  1322. early in the bootup.
  1323. config FPE_NWFPE_XP
  1324. bool "Support extended precision"
  1325. depends on FPE_NWFPE
  1326. help
  1327. Say Y to include 80-bit support in the kernel floating-point
  1328. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1329. Note that gcc does not generate 80-bit operations by default,
  1330. so in most cases this option only enlarges the size of the
  1331. floating point emulator without any good reason.
  1332. You almost surely want to say N here.
  1333. config FPE_FASTFPE
  1334. bool "FastFPE math emulation (EXPERIMENTAL)"
  1335. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1336. ---help---
  1337. Say Y here to include the FAST floating point emulator in the kernel.
  1338. This is an experimental much faster emulator which now also has full
  1339. precision for the mantissa. It does not support any exceptions.
  1340. It is very simple, and approximately 3-6 times faster than NWFPE.
  1341. It should be sufficient for most programs. It may be not suitable
  1342. for scientific calculations, but you have to check this for yourself.
  1343. If you do not feel you need a faster FP emulation you should better
  1344. choose NWFPE.
  1345. config VFP
  1346. bool "VFP-format floating point maths"
  1347. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1348. help
  1349. Say Y to include VFP support code in the kernel. This is needed
  1350. if your hardware includes a VFP unit.
  1351. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1352. release notes and additional status information.
  1353. Say N if your target does not have VFP hardware.
  1354. config VFPv3
  1355. bool
  1356. depends on VFP
  1357. default y if CPU_V7
  1358. config NEON
  1359. bool "Advanced SIMD (NEON) Extension support"
  1360. depends on VFPv3 && CPU_V7
  1361. help
  1362. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1363. Extension.
  1364. endmenu
  1365. menu "Userspace binary formats"
  1366. source "fs/Kconfig.binfmt"
  1367. config ARTHUR
  1368. tristate "RISC OS personality"
  1369. depends on !AEABI
  1370. help
  1371. Say Y here to include the kernel code necessary if you want to run
  1372. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1373. experimental; if this sounds frightening, say N and sleep in peace.
  1374. You can also say M here to compile this support as a module (which
  1375. will be called arthur).
  1376. endmenu
  1377. menu "Power management options"
  1378. source "kernel/power/Kconfig"
  1379. config ARCH_SUSPEND_POSSIBLE
  1380. def_bool y
  1381. endmenu
  1382. source "net/Kconfig"
  1383. source "drivers/Kconfig"
  1384. source "fs/Kconfig"
  1385. source "arch/arm/Kconfig.debug"
  1386. source "security/Kconfig"
  1387. source "crypto/Kconfig"
  1388. source "lib/Kconfig"