Kconfig 48 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. select PCI_DOMAINS if PCI
  249. help
  250. Support for Cavium Networks CNS3XXX platform.
  251. config ARCH_GEMINI
  252. bool "Cortina Systems Gemini"
  253. select CPU_FA526
  254. select ARCH_REQUIRE_GPIOLIB
  255. select ARCH_USES_GETTIMEOFFSET
  256. help
  257. Support for the Cortina Systems Gemini family SoCs
  258. config ARCH_EBSA110
  259. bool "EBSA-110"
  260. select CPU_SA110
  261. select ISA
  262. select NO_IOPORT
  263. select ARCH_USES_GETTIMEOFFSET
  264. help
  265. This is an evaluation board for the StrongARM processor available
  266. from Digital. It has limited hardware on-board, including an
  267. Ethernet interface, two PCMCIA sockets, two serial ports and a
  268. parallel port.
  269. config ARCH_EP93XX
  270. bool "EP93xx-based"
  271. select CPU_ARM920T
  272. select ARM_AMBA
  273. select ARM_VIC
  274. select COMMON_CLKDEV
  275. select ARCH_REQUIRE_GPIOLIB
  276. select ARCH_HAS_HOLES_MEMORYMODEL
  277. select ARCH_USES_GETTIMEOFFSET
  278. help
  279. This enables support for the Cirrus EP93xx series of CPUs.
  280. config ARCH_FOOTBRIDGE
  281. bool "FootBridge"
  282. select CPU_SA110
  283. select FOOTBRIDGE
  284. select ARCH_USES_GETTIMEOFFSET
  285. help
  286. Support for systems based on the DC21285 companion chip
  287. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  288. config ARCH_MXC
  289. bool "Freescale MXC/iMX-based"
  290. select GENERIC_CLOCKEVENTS
  291. select ARCH_REQUIRE_GPIOLIB
  292. select COMMON_CLKDEV
  293. help
  294. Support for Freescale MXC/iMX-based family of processors
  295. config ARCH_STMP3XXX
  296. bool "Freescale STMP3xxx"
  297. select CPU_ARM926T
  298. select COMMON_CLKDEV
  299. select ARCH_REQUIRE_GPIOLIB
  300. select GENERIC_CLOCKEVENTS
  301. select USB_ARCH_HAS_EHCI
  302. help
  303. Support for systems based on the Freescale 3xxx CPUs.
  304. config ARCH_NETX
  305. bool "Hilscher NetX based"
  306. select CPU_ARM926T
  307. select ARM_VIC
  308. select GENERIC_CLOCKEVENTS
  309. help
  310. This enables support for systems based on the Hilscher NetX Soc
  311. config ARCH_H720X
  312. bool "Hynix HMS720x-based"
  313. select CPU_ARM720T
  314. select ISA_DMA_API
  315. select ARCH_USES_GETTIMEOFFSET
  316. help
  317. This enables support for systems based on the Hynix HMS720x
  318. config ARCH_IOP13XX
  319. bool "IOP13xx-based"
  320. depends on MMU
  321. select CPU_XSC3
  322. select PLAT_IOP
  323. select PCI
  324. select ARCH_SUPPORTS_MSI
  325. select VMSPLIT_1G
  326. help
  327. Support for Intel's IOP13XX (XScale) family of processors.
  328. config ARCH_IOP32X
  329. bool "IOP32x-based"
  330. depends on MMU
  331. select CPU_XSCALE
  332. select PLAT_IOP
  333. select PCI
  334. select ARCH_REQUIRE_GPIOLIB
  335. help
  336. Support for Intel's 80219 and IOP32X (XScale) family of
  337. processors.
  338. config ARCH_IOP33X
  339. bool "IOP33x-based"
  340. depends on MMU
  341. select CPU_XSCALE
  342. select PLAT_IOP
  343. select PCI
  344. select ARCH_REQUIRE_GPIOLIB
  345. help
  346. Support for Intel's IOP33X (XScale) family of processors.
  347. config ARCH_IXP23XX
  348. bool "IXP23XX-based"
  349. depends on MMU
  350. select CPU_XSC3
  351. select PCI
  352. select ARCH_USES_GETTIMEOFFSET
  353. help
  354. Support for Intel's IXP23xx (XScale) family of processors.
  355. config ARCH_IXP2000
  356. bool "IXP2400/2800-based"
  357. depends on MMU
  358. select CPU_XSCALE
  359. select PCI
  360. select ARCH_USES_GETTIMEOFFSET
  361. help
  362. Support for Intel's IXP2400/2800 (XScale) family of processors.
  363. config ARCH_IXP4XX
  364. bool "IXP4xx-based"
  365. depends on MMU
  366. select CPU_XSCALE
  367. select GENERIC_GPIO
  368. select GENERIC_CLOCKEVENTS
  369. select DMABOUNCE if PCI
  370. help
  371. Support for Intel's IXP4XX (XScale) family of processors.
  372. config ARCH_L7200
  373. bool "LinkUp-L7200"
  374. select CPU_ARM720T
  375. select FIQ
  376. select ARCH_USES_GETTIMEOFFSET
  377. help
  378. Say Y here if you intend to run this kernel on a LinkUp Systems
  379. L7200 Software Development Board which uses an ARM720T processor.
  380. Information on this board can be obtained at:
  381. <http://www.linkupsys.com/>
  382. If you have any questions or comments about the Linux kernel port
  383. to this board, send e-mail to <sjhill@cotw.com>.
  384. config ARCH_DOVE
  385. bool "Marvell Dove"
  386. select PCI
  387. select ARCH_REQUIRE_GPIOLIB
  388. select GENERIC_CLOCKEVENTS
  389. select PLAT_ORION
  390. help
  391. Support for the Marvell Dove SoC 88AP510
  392. config ARCH_KIRKWOOD
  393. bool "Marvell Kirkwood"
  394. select CPU_FEROCEON
  395. select PCI
  396. select ARCH_REQUIRE_GPIOLIB
  397. select GENERIC_CLOCKEVENTS
  398. select PLAT_ORION
  399. help
  400. Support for the following Marvell Kirkwood series SoCs:
  401. 88F6180, 88F6192 and 88F6281.
  402. config ARCH_LOKI
  403. bool "Marvell Loki (88RC8480)"
  404. select CPU_FEROCEON
  405. select GENERIC_CLOCKEVENTS
  406. select PLAT_ORION
  407. help
  408. Support for the Marvell Loki (88RC8480) SoC.
  409. config ARCH_LPC32XX
  410. bool "NXP LPC32XX"
  411. select CPU_ARM926T
  412. select ARCH_REQUIRE_GPIOLIB
  413. select HAVE_IDE
  414. select ARM_AMBA
  415. select USB_ARCH_HAS_OHCI
  416. select COMMON_CLKDEV
  417. select GENERIC_TIME
  418. select GENERIC_CLOCKEVENTS
  419. help
  420. Support for the NXP LPC32XX family of processors
  421. config ARCH_MV78XX0
  422. bool "Marvell MV78xx0"
  423. select CPU_FEROCEON
  424. select PCI
  425. select ARCH_REQUIRE_GPIOLIB
  426. select GENERIC_CLOCKEVENTS
  427. select PLAT_ORION
  428. help
  429. Support for the following Marvell MV78xx0 series SoCs:
  430. MV781x0, MV782x0.
  431. config ARCH_ORION5X
  432. bool "Marvell Orion"
  433. depends on MMU
  434. select CPU_FEROCEON
  435. select PCI
  436. select ARCH_REQUIRE_GPIOLIB
  437. select GENERIC_CLOCKEVENTS
  438. select PLAT_ORION
  439. help
  440. Support for the following Marvell Orion 5x series SoCs:
  441. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  442. Orion-2 (5281), Orion-1-90 (6183).
  443. config ARCH_MMP
  444. bool "Marvell PXA168/910/MMP2"
  445. depends on MMU
  446. select ARCH_REQUIRE_GPIOLIB
  447. select COMMON_CLKDEV
  448. select GENERIC_CLOCKEVENTS
  449. select TICK_ONESHOT
  450. select PLAT_PXA
  451. help
  452. Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
  453. config ARCH_KS8695
  454. bool "Micrel/Kendin KS8695"
  455. select CPU_ARM922T
  456. select ARCH_REQUIRE_GPIOLIB
  457. select ARCH_USES_GETTIMEOFFSET
  458. help
  459. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  460. System-on-Chip devices.
  461. config ARCH_NS9XXX
  462. bool "NetSilicon NS9xxx"
  463. select CPU_ARM926T
  464. select GENERIC_GPIO
  465. select GENERIC_CLOCKEVENTS
  466. select HAVE_CLK
  467. help
  468. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  469. System.
  470. <http://www.digi.com/products/microprocessors/index.jsp>
  471. config ARCH_W90X900
  472. bool "Nuvoton W90X900 CPU"
  473. select CPU_ARM926T
  474. select ARCH_REQUIRE_GPIOLIB
  475. select COMMON_CLKDEV
  476. select GENERIC_CLOCKEVENTS
  477. help
  478. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  479. At present, the w90x900 has been renamed nuc900, regarding
  480. the ARM series product line, you can login the following
  481. link address to know more.
  482. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  483. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  484. config ARCH_NUC93X
  485. bool "Nuvoton NUC93X CPU"
  486. select CPU_ARM926T
  487. select COMMON_CLKDEV
  488. help
  489. Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
  490. low-power and high performance MPEG-4/JPEG multimedia controller chip.
  491. config ARCH_PNX4008
  492. bool "Philips Nexperia PNX4008 Mobile"
  493. select CPU_ARM926T
  494. select COMMON_CLKDEV
  495. select ARCH_USES_GETTIMEOFFSET
  496. help
  497. This enables support for Philips PNX4008 mobile platform.
  498. config ARCH_PXA
  499. bool "PXA2xx/PXA3xx-based"
  500. depends on MMU
  501. select ARCH_MTD_XIP
  502. select ARCH_HAS_CPUFREQ
  503. select COMMON_CLKDEV
  504. select ARCH_REQUIRE_GPIOLIB
  505. select GENERIC_CLOCKEVENTS
  506. select TICK_ONESHOT
  507. select PLAT_PXA
  508. help
  509. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  510. config ARCH_MSM
  511. bool "Qualcomm MSM"
  512. select HAVE_CLK
  513. select GENERIC_CLOCKEVENTS
  514. select ARCH_REQUIRE_GPIOLIB
  515. help
  516. Support for Qualcomm MSM/QSD based systems. This runs on the
  517. apps processor of the MSM/QSD and depends on a shared memory
  518. interface to the modem processor which runs the baseband
  519. stack and controls some vital subsystems
  520. (clock and power control, etc).
  521. config ARCH_SHMOBILE
  522. bool "Renesas SH-Mobile"
  523. help
  524. Support for Renesas's SH-Mobile ARM platforms
  525. config ARCH_RPC
  526. bool "RiscPC"
  527. select ARCH_ACORN
  528. select FIQ
  529. select TIMER_ACORN
  530. select ARCH_MAY_HAVE_PC_FDC
  531. select HAVE_PATA_PLATFORM
  532. select ISA_DMA_API
  533. select NO_IOPORT
  534. select ARCH_SPARSEMEM_ENABLE
  535. select ARCH_USES_GETTIMEOFFSET
  536. help
  537. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  538. CD-ROM interface, serial and parallel port, and the floppy drive.
  539. config ARCH_SA1100
  540. bool "SA1100-based"
  541. select CPU_SA1100
  542. select ISA
  543. select ARCH_SPARSEMEM_ENABLE
  544. select ARCH_MTD_XIP
  545. select ARCH_HAS_CPUFREQ
  546. select CPU_FREQ
  547. select GENERIC_CLOCKEVENTS
  548. select HAVE_CLK
  549. select TICK_ONESHOT
  550. select ARCH_REQUIRE_GPIOLIB
  551. help
  552. Support for StrongARM 11x0 based boards.
  553. config ARCH_S3C2410
  554. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
  555. select GENERIC_GPIO
  556. select ARCH_HAS_CPUFREQ
  557. select HAVE_CLK
  558. select ARCH_USES_GETTIMEOFFSET
  559. help
  560. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  561. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  562. the Samsung SMDK2410 development board (and derivatives).
  563. Note, the S3C2416 and the S3C2450 are so close that they even share
  564. the same SoC ID code. This means that there is no seperate machine
  565. directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
  566. config ARCH_S3C64XX
  567. bool "Samsung S3C64XX"
  568. select PLAT_SAMSUNG
  569. select CPU_V6
  570. select ARM_VIC
  571. select HAVE_CLK
  572. select NO_IOPORT
  573. select ARCH_USES_GETTIMEOFFSET
  574. select ARCH_HAS_CPUFREQ
  575. select ARCH_REQUIRE_GPIOLIB
  576. select SAMSUNG_CLKSRC
  577. select SAMSUNG_IRQ_VIC_TIMER
  578. select SAMSUNG_IRQ_UART
  579. select S3C_GPIO_TRACK
  580. select S3C_GPIO_PULL_UPDOWN
  581. select S3C_GPIO_CFG_S3C24XX
  582. select S3C_GPIO_CFG_S3C64XX
  583. select S3C_DEV_NAND
  584. select USB_ARCH_HAS_OHCI
  585. select SAMSUNG_GPIOLIB_4BIT
  586. help
  587. Samsung S3C64XX series based systems
  588. config ARCH_S5P6440
  589. bool "Samsung S5P6440"
  590. select CPU_V6
  591. select GENERIC_GPIO
  592. select HAVE_CLK
  593. select ARCH_USES_GETTIMEOFFSET
  594. help
  595. Samsung S5P6440 CPU based systems
  596. config ARCH_S5P6442
  597. bool "Samsung S5P6442"
  598. select CPU_V6
  599. select GENERIC_GPIO
  600. select HAVE_CLK
  601. select ARCH_USES_GETTIMEOFFSET
  602. help
  603. Samsung S5P6442 CPU based systems
  604. config ARCH_S5PC100
  605. bool "Samsung S5PC100"
  606. select GENERIC_GPIO
  607. select HAVE_CLK
  608. select CPU_V7
  609. select ARM_L1_CACHE_SHIFT_6
  610. select ARCH_USES_GETTIMEOFFSET
  611. help
  612. Samsung S5PC100 series based systems
  613. config ARCH_S5PV210
  614. bool "Samsung S5PV210/S5PC110"
  615. select CPU_V7
  616. select GENERIC_GPIO
  617. select HAVE_CLK
  618. select ARM_L1_CACHE_SHIFT_6
  619. select ARCH_USES_GETTIMEOFFSET
  620. help
  621. Samsung S5PV210/S5PC110 series based systems
  622. config ARCH_SHARK
  623. bool "Shark"
  624. select CPU_SA110
  625. select ISA
  626. select ISA_DMA
  627. select ZONE_DMA
  628. select PCI
  629. select ARCH_USES_GETTIMEOFFSET
  630. help
  631. Support for the StrongARM based Digital DNARD machine, also known
  632. as "Shark" (<http://www.shark-linux.de/shark.html>).
  633. config ARCH_LH7A40X
  634. bool "Sharp LH7A40X"
  635. select CPU_ARM922T
  636. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  637. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  638. select ARCH_USES_GETTIMEOFFSET
  639. help
  640. Say Y here for systems based on one of the Sharp LH7A40X
  641. System on a Chip processors. These CPUs include an ARM922T
  642. core with a wide array of integrated devices for
  643. hand-held and low-power applications.
  644. config ARCH_U300
  645. bool "ST-Ericsson U300 Series"
  646. depends on MMU
  647. select CPU_ARM926T
  648. select HAVE_TCM
  649. select ARM_AMBA
  650. select ARM_VIC
  651. select GENERIC_CLOCKEVENTS
  652. select COMMON_CLKDEV
  653. select GENERIC_GPIO
  654. help
  655. Support for ST-Ericsson U300 series mobile platforms.
  656. config ARCH_U8500
  657. bool "ST-Ericsson U8500 Series"
  658. select CPU_V7
  659. select ARM_AMBA
  660. select GENERIC_CLOCKEVENTS
  661. select COMMON_CLKDEV
  662. select ARCH_REQUIRE_GPIOLIB
  663. help
  664. Support for ST-Ericsson's Ux500 architecture
  665. config ARCH_NOMADIK
  666. bool "STMicroelectronics Nomadik"
  667. select ARM_AMBA
  668. select ARM_VIC
  669. select CPU_ARM926T
  670. select COMMON_CLKDEV
  671. select GENERIC_CLOCKEVENTS
  672. select ARCH_REQUIRE_GPIOLIB
  673. help
  674. Support for the Nomadik platform by ST-Ericsson
  675. config ARCH_DAVINCI
  676. bool "TI DaVinci"
  677. select GENERIC_CLOCKEVENTS
  678. select ARCH_REQUIRE_GPIOLIB
  679. select ZONE_DMA
  680. select HAVE_IDE
  681. select COMMON_CLKDEV
  682. select GENERIC_ALLOCATOR
  683. select ARCH_HAS_HOLES_MEMORYMODEL
  684. help
  685. Support for TI's DaVinci platform.
  686. config ARCH_OMAP
  687. bool "TI OMAP"
  688. select HAVE_CLK
  689. select ARCH_REQUIRE_GPIOLIB
  690. select ARCH_HAS_CPUFREQ
  691. select GENERIC_CLOCKEVENTS
  692. select ARCH_HAS_HOLES_MEMORYMODEL
  693. help
  694. Support for TI's OMAP platform (OMAP1 and OMAP2).
  695. config PLAT_SPEAR
  696. bool "ST SPEAr"
  697. select ARM_AMBA
  698. select ARCH_REQUIRE_GPIOLIB
  699. select COMMON_CLKDEV
  700. select GENERIC_CLOCKEVENTS
  701. select HAVE_CLK
  702. help
  703. Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
  704. endchoice
  705. #
  706. # This is sorted alphabetically by mach-* pathname. However, plat-*
  707. # Kconfigs may be included either alphabetically (according to the
  708. # plat- suffix) or along side the corresponding mach-* source.
  709. #
  710. source "arch/arm/mach-aaec2000/Kconfig"
  711. source "arch/arm/mach-at91/Kconfig"
  712. source "arch/arm/mach-bcmring/Kconfig"
  713. source "arch/arm/mach-clps711x/Kconfig"
  714. source "arch/arm/mach-cns3xxx/Kconfig"
  715. source "arch/arm/mach-davinci/Kconfig"
  716. source "arch/arm/mach-dove/Kconfig"
  717. source "arch/arm/mach-ep93xx/Kconfig"
  718. source "arch/arm/mach-footbridge/Kconfig"
  719. source "arch/arm/mach-gemini/Kconfig"
  720. source "arch/arm/mach-h720x/Kconfig"
  721. source "arch/arm/mach-integrator/Kconfig"
  722. source "arch/arm/mach-iop32x/Kconfig"
  723. source "arch/arm/mach-iop33x/Kconfig"
  724. source "arch/arm/mach-iop13xx/Kconfig"
  725. source "arch/arm/mach-ixp4xx/Kconfig"
  726. source "arch/arm/mach-ixp2000/Kconfig"
  727. source "arch/arm/mach-ixp23xx/Kconfig"
  728. source "arch/arm/mach-kirkwood/Kconfig"
  729. source "arch/arm/mach-ks8695/Kconfig"
  730. source "arch/arm/mach-lh7a40x/Kconfig"
  731. source "arch/arm/mach-loki/Kconfig"
  732. source "arch/arm/mach-lpc32xx/Kconfig"
  733. source "arch/arm/mach-msm/Kconfig"
  734. source "arch/arm/mach-mv78xx0/Kconfig"
  735. source "arch/arm/plat-mxc/Kconfig"
  736. source "arch/arm/mach-netx/Kconfig"
  737. source "arch/arm/mach-nomadik/Kconfig"
  738. source "arch/arm/plat-nomadik/Kconfig"
  739. source "arch/arm/mach-ns9xxx/Kconfig"
  740. source "arch/arm/mach-nuc93x/Kconfig"
  741. source "arch/arm/plat-omap/Kconfig"
  742. source "arch/arm/mach-omap1/Kconfig"
  743. source "arch/arm/mach-omap2/Kconfig"
  744. source "arch/arm/mach-orion5x/Kconfig"
  745. source "arch/arm/mach-pxa/Kconfig"
  746. source "arch/arm/plat-pxa/Kconfig"
  747. source "arch/arm/mach-mmp/Kconfig"
  748. source "arch/arm/mach-realview/Kconfig"
  749. source "arch/arm/mach-sa1100/Kconfig"
  750. source "arch/arm/plat-samsung/Kconfig"
  751. source "arch/arm/plat-s3c24xx/Kconfig"
  752. source "arch/arm/plat-s5p/Kconfig"
  753. source "arch/arm/plat-spear/Kconfig"
  754. if ARCH_S3C2410
  755. source "arch/arm/mach-s3c2400/Kconfig"
  756. source "arch/arm/mach-s3c2410/Kconfig"
  757. source "arch/arm/mach-s3c2412/Kconfig"
  758. source "arch/arm/mach-s3c2416/Kconfig"
  759. source "arch/arm/mach-s3c2440/Kconfig"
  760. source "arch/arm/mach-s3c2443/Kconfig"
  761. endif
  762. if ARCH_S3C64XX
  763. source "arch/arm/mach-s3c64xx/Kconfig"
  764. endif
  765. source "arch/arm/mach-s5p6440/Kconfig"
  766. source "arch/arm/mach-s5p6442/Kconfig"
  767. source "arch/arm/mach-s5pc100/Kconfig"
  768. source "arch/arm/mach-s5pv210/Kconfig"
  769. source "arch/arm/mach-shmobile/Kconfig"
  770. source "arch/arm/plat-stmp3xxx/Kconfig"
  771. source "arch/arm/mach-u300/Kconfig"
  772. source "arch/arm/mach-ux500/Kconfig"
  773. source "arch/arm/mach-versatile/Kconfig"
  774. source "arch/arm/mach-vexpress/Kconfig"
  775. source "arch/arm/mach-w90x900/Kconfig"
  776. # Definitions to make life easier
  777. config ARCH_ACORN
  778. bool
  779. config PLAT_IOP
  780. bool
  781. select GENERIC_CLOCKEVENTS
  782. config PLAT_ORION
  783. bool
  784. config PLAT_PXA
  785. bool
  786. config PLAT_VERSATILE
  787. bool
  788. config ARM_TIMER_SP804
  789. bool
  790. source arch/arm/mm/Kconfig
  791. config IWMMXT
  792. bool "Enable iWMMXt support"
  793. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
  794. default y if PXA27x || PXA3xx || ARCH_MMP
  795. help
  796. Enable support for iWMMXt context switching at run time if
  797. running on a CPU that supports it.
  798. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  799. config XSCALE_PMU
  800. bool
  801. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  802. default y
  803. config CPU_HAS_PMU
  804. depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
  805. (!ARCH_OMAP3 || OMAP3_EMU)
  806. default y
  807. bool
  808. if !MMU
  809. source "arch/arm/Kconfig-nommu"
  810. endif
  811. config ARM_ERRATA_411920
  812. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  813. depends on CPU_V6 && !SMP
  814. help
  815. Invalidation of the Instruction Cache operation can
  816. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  817. It does not affect the MPCore. This option enables the ARM Ltd.
  818. recommended workaround.
  819. config ARM_ERRATA_430973
  820. bool "ARM errata: Stale prediction on replaced interworking branch"
  821. depends on CPU_V7
  822. help
  823. This option enables the workaround for the 430973 Cortex-A8
  824. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  825. interworking branch is replaced with another code sequence at the
  826. same virtual address, whether due to self-modifying code or virtual
  827. to physical address re-mapping, Cortex-A8 does not recover from the
  828. stale interworking branch prediction. This results in Cortex-A8
  829. executing the new code sequence in the incorrect ARM or Thumb state.
  830. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  831. and also flushes the branch target cache at every context switch.
  832. Note that setting specific bits in the ACTLR register may not be
  833. available in non-secure mode.
  834. config ARM_ERRATA_458693
  835. bool "ARM errata: Processor deadlock when a false hazard is created"
  836. depends on CPU_V7
  837. help
  838. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  839. erratum. For very specific sequences of memory operations, it is
  840. possible for a hazard condition intended for a cache line to instead
  841. be incorrectly associated with a different cache line. This false
  842. hazard might then cause a processor deadlock. The workaround enables
  843. the L1 caching of the NEON accesses and disables the PLD instruction
  844. in the ACTLR register. Note that setting specific bits in the ACTLR
  845. register may not be available in non-secure mode.
  846. config ARM_ERRATA_460075
  847. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  848. depends on CPU_V7
  849. help
  850. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  851. erratum. Any asynchronous access to the L2 cache may encounter a
  852. situation in which recent store transactions to the L2 cache are lost
  853. and overwritten with stale memory contents from external memory. The
  854. workaround disables the write-allocate mode for the L2 cache via the
  855. ACTLR register. Note that setting specific bits in the ACTLR register
  856. may not be available in non-secure mode.
  857. config PL310_ERRATA_588369
  858. bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
  859. depends on CACHE_L2X0 && ARCH_OMAP4
  860. help
  861. The PL310 L2 cache controller implements three types of Clean &
  862. Invalidate maintenance operations: by Physical Address
  863. (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
  864. They are architecturally defined to behave as the execution of a
  865. clean operation followed immediately by an invalidate operation,
  866. both performing to the same memory location. This functionality
  867. is not correctly implemented in PL310 as clean lines are not
  868. invalidated as a result of these operations. Note that this errata
  869. uses Texas Instrument's secure monitor api.
  870. endmenu
  871. source "arch/arm/common/Kconfig"
  872. config FORCE_MAX_ZONEORDER
  873. int
  874. depends on SA1111
  875. default "9"
  876. menu "Bus support"
  877. config ARM_AMBA
  878. bool
  879. config ISA
  880. bool
  881. help
  882. Find out whether you have ISA slots on your motherboard. ISA is the
  883. name of a bus system, i.e. the way the CPU talks to the other stuff
  884. inside your box. Other bus systems are PCI, EISA, MicroChannel
  885. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  886. newer boards don't support it. If you have ISA, say Y, otherwise N.
  887. # Select ISA DMA controller support
  888. config ISA_DMA
  889. bool
  890. select ISA_DMA_API
  891. # Select ISA DMA interface
  892. config ISA_DMA_API
  893. bool
  894. config PCI
  895. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX
  896. help
  897. Find out whether you have a PCI motherboard. PCI is the name of a
  898. bus system, i.e. the way the CPU talks to the other stuff inside
  899. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  900. VESA. If you have PCI, say Y, otherwise N.
  901. config PCI_DOMAINS
  902. bool
  903. depends on PCI
  904. config PCI_SYSCALL
  905. def_bool PCI
  906. # Select the host bridge type
  907. config PCI_HOST_VIA82C505
  908. bool
  909. depends on PCI && ARCH_SHARK
  910. default y
  911. config PCI_HOST_ITE8152
  912. bool
  913. depends on PCI && MACH_ARMCORE
  914. default y
  915. select DMABOUNCE
  916. source "drivers/pci/Kconfig"
  917. source "drivers/pcmcia/Kconfig"
  918. endmenu
  919. menu "Kernel Features"
  920. source "kernel/time/Kconfig"
  921. config SMP
  922. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  923. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
  924. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
  925. ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
  926. depends on GENERIC_CLOCKEVENTS
  927. select USE_GENERIC_SMP_HELPERS
  928. select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
  929. help
  930. This enables support for systems with more than one CPU. If you have
  931. a system with only one CPU, like most personal computers, say N. If
  932. you have a system with more than one CPU, say Y.
  933. If you say N here, the kernel will run on single and multiprocessor
  934. machines, but will use only one CPU of a multiprocessor machine. If
  935. you say Y here, the kernel will run on many, but not all, single
  936. processor machines. On a single processor machine, the kernel will
  937. run faster if you say N here.
  938. See also <file:Documentation/i386/IO-APIC.txt>,
  939. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  940. <http://www.linuxdoc.org/docs.html#howto>.
  941. If you don't know what to do here, say N.
  942. config HAVE_ARM_SCU
  943. bool
  944. depends on SMP
  945. help
  946. This option enables support for the ARM system coherency unit
  947. config HAVE_ARM_TWD
  948. bool
  949. depends on SMP
  950. help
  951. This options enables support for the ARM timer and watchdog unit
  952. choice
  953. prompt "Memory split"
  954. default VMSPLIT_3G
  955. help
  956. Select the desired split between kernel and user memory.
  957. If you are not absolutely sure what you are doing, leave this
  958. option alone!
  959. config VMSPLIT_3G
  960. bool "3G/1G user/kernel split"
  961. config VMSPLIT_2G
  962. bool "2G/2G user/kernel split"
  963. config VMSPLIT_1G
  964. bool "1G/3G user/kernel split"
  965. endchoice
  966. config PAGE_OFFSET
  967. hex
  968. default 0x40000000 if VMSPLIT_1G
  969. default 0x80000000 if VMSPLIT_2G
  970. default 0xC0000000
  971. config NR_CPUS
  972. int "Maximum number of CPUs (2-32)"
  973. range 2 32
  974. depends on SMP
  975. default "4"
  976. config HOTPLUG_CPU
  977. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  978. depends on SMP && HOTPLUG && EXPERIMENTAL
  979. help
  980. Say Y here to experiment with turning CPUs off and on. CPUs
  981. can be controlled through /sys/devices/system/cpu.
  982. config LOCAL_TIMERS
  983. bool "Use local timer interrupts"
  984. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
  985. REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
  986. default y
  987. select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
  988. help
  989. Enable support for local timers on SMP platforms, rather then the
  990. legacy IPI broadcast method. Local timers allows the system
  991. accounting to be spread across the timer interval, preventing a
  992. "thundering herd" at every timer tick.
  993. source kernel/Kconfig.preempt
  994. config HZ
  995. int
  996. default 128 if ARCH_L7200
  997. default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
  998. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  999. default AT91_TIMER_HZ if ARCH_AT91
  1000. default 100
  1001. config THUMB2_KERNEL
  1002. bool "Compile the kernel in Thumb-2 mode"
  1003. depends on CPU_V7 && EXPERIMENTAL
  1004. select AEABI
  1005. select ARM_ASM_UNIFIED
  1006. help
  1007. By enabling this option, the kernel will be compiled in
  1008. Thumb-2 mode. A compiler/assembler that understand the unified
  1009. ARM-Thumb syntax is needed.
  1010. If unsure, say N.
  1011. config ARM_ASM_UNIFIED
  1012. bool
  1013. config AEABI
  1014. bool "Use the ARM EABI to compile the kernel"
  1015. help
  1016. This option allows for the kernel to be compiled using the latest
  1017. ARM ABI (aka EABI). This is only useful if you are using a user
  1018. space environment that is also compiled with EABI.
  1019. Since there are major incompatibilities between the legacy ABI and
  1020. EABI, especially with regard to structure member alignment, this
  1021. option also changes the kernel syscall calling convention to
  1022. disambiguate both ABIs and allow for backward compatibility support
  1023. (selected with CONFIG_OABI_COMPAT).
  1024. To use this you need GCC version 4.0.0 or later.
  1025. config OABI_COMPAT
  1026. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  1027. depends on AEABI && EXPERIMENTAL
  1028. default y
  1029. help
  1030. This option preserves the old syscall interface along with the
  1031. new (ARM EABI) one. It also provides a compatibility layer to
  1032. intercept syscalls that have structure arguments which layout
  1033. in memory differs between the legacy ABI and the new ARM EABI
  1034. (only for non "thumb" binaries). This option adds a tiny
  1035. overhead to all syscalls and produces a slightly larger kernel.
  1036. If you know you'll be using only pure EABI user space then you
  1037. can say N here. If this option is not selected and you attempt
  1038. to execute a legacy ABI binary then the result will be
  1039. UNPREDICTABLE (in fact it can be predicted that it won't work
  1040. at all). If in doubt say Y.
  1041. config ARCH_HAS_HOLES_MEMORYMODEL
  1042. bool
  1043. # Discontigmem is deprecated
  1044. config ARCH_DISCONTIGMEM_ENABLE
  1045. bool
  1046. config ARCH_SPARSEMEM_ENABLE
  1047. bool
  1048. config ARCH_SPARSEMEM_DEFAULT
  1049. def_bool ARCH_SPARSEMEM_ENABLE
  1050. config ARCH_SELECT_MEMORY_MODEL
  1051. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  1052. config NODES_SHIFT
  1053. int
  1054. default "4" if ARCH_LH7A40X
  1055. default "2"
  1056. depends on NEED_MULTIPLE_NODES
  1057. config HIGHMEM
  1058. bool "High Memory Support (EXPERIMENTAL)"
  1059. depends on MMU && EXPERIMENTAL
  1060. help
  1061. The address space of ARM processors is only 4 Gigabytes large
  1062. and it has to accommodate user address space, kernel address
  1063. space as well as some memory mapped IO. That means that, if you
  1064. have a large amount of physical memory and/or IO, not all of the
  1065. memory can be "permanently mapped" by the kernel. The physical
  1066. memory that is not permanently mapped is called "high memory".
  1067. Depending on the selected kernel/user memory split, minimum
  1068. vmalloc space and actual amount of RAM, you may not need this
  1069. option which should result in a slightly faster kernel.
  1070. If unsure, say n.
  1071. config HIGHPTE
  1072. bool "Allocate 2nd-level pagetables from highmem"
  1073. depends on HIGHMEM
  1074. depends on !OUTER_CACHE
  1075. config HW_PERF_EVENTS
  1076. bool "Enable hardware performance counter support for perf events"
  1077. depends on PERF_EVENTS && CPU_HAS_PMU
  1078. default y
  1079. help
  1080. Enable hardware performance counter support for perf events. If
  1081. disabled, perf events will use software events only.
  1082. source "mm/Kconfig"
  1083. config LEDS
  1084. bool "Timer and CPU usage LEDs"
  1085. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  1086. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  1087. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  1088. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  1089. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  1090. ARCH_AT91 || ARCH_DAVINCI || \
  1091. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  1092. help
  1093. If you say Y here, the LEDs on your machine will be used
  1094. to provide useful information about your current system status.
  1095. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  1096. be able to select which LEDs are active using the options below. If
  1097. you are compiling a kernel for the EBSA-110 or the LART however, the
  1098. red LED will simply flash regularly to indicate that the system is
  1099. still functional. It is safe to say Y here if you have a CATS
  1100. system, but the driver will do nothing.
  1101. config LEDS_TIMER
  1102. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  1103. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1104. || MACH_OMAP_PERSEUS2
  1105. depends on LEDS
  1106. depends on !GENERIC_CLOCKEVENTS
  1107. default y if ARCH_EBSA110
  1108. help
  1109. If you say Y here, one of the system LEDs (the green one on the
  1110. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1111. will flash regularly to indicate that the system is still
  1112. operational. This is mainly useful to kernel hackers who are
  1113. debugging unstable kernels.
  1114. The LART uses the same LED for both Timer LED and CPU usage LED
  1115. functions. You may choose to use both, but the Timer LED function
  1116. will overrule the CPU usage LED.
  1117. config LEDS_CPU
  1118. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1119. !ARCH_OMAP) \
  1120. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1121. || MACH_OMAP_PERSEUS2
  1122. depends on LEDS
  1123. help
  1124. If you say Y here, the red LED will be used to give a good real
  1125. time indication of CPU usage, by lighting whenever the idle task
  1126. is not currently executing.
  1127. The LART uses the same LED for both Timer LED and CPU usage LED
  1128. functions. You may choose to use both, but the Timer LED function
  1129. will overrule the CPU usage LED.
  1130. config ALIGNMENT_TRAP
  1131. bool
  1132. depends on CPU_CP15_MMU
  1133. default y if !ARCH_EBSA110
  1134. select HAVE_PROC_CPU if PROC_FS
  1135. help
  1136. ARM processors cannot fetch/store information which is not
  1137. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1138. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1139. fetch/store instructions will be emulated in software if you say
  1140. here, which has a severe performance impact. This is necessary for
  1141. correct operation of some network protocols. With an IP-only
  1142. configuration it is safe to say N, otherwise say Y.
  1143. config UACCESS_WITH_MEMCPY
  1144. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1145. depends on MMU && EXPERIMENTAL
  1146. default y if CPU_FEROCEON
  1147. help
  1148. Implement faster copy_to_user and clear_user methods for CPU
  1149. cores where a 8-word STM instruction give significantly higher
  1150. memory write throughput than a sequence of individual 32bit stores.
  1151. A possible side effect is a slight increase in scheduling latency
  1152. between threads sharing the same address space if they invoke
  1153. such copy operations with large buffers.
  1154. However, if the CPU data cache is using a write-allocate mode,
  1155. this option is unlikely to provide any performance gain.
  1156. config CC_STACKPROTECTOR
  1157. bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
  1158. help
  1159. This option turns on the -fstack-protector GCC feature. This
  1160. feature puts, at the beginning of functions, a canary value on
  1161. the stack just before the return address, and validates
  1162. the value just before actually returning. Stack based buffer
  1163. overflows (that need to overwrite this return address) now also
  1164. overwrite the canary, which gets detected and the attack is then
  1165. neutralized via a kernel panic.
  1166. This feature requires gcc version 4.2 or above.
  1167. config DEPRECATED_PARAM_STRUCT
  1168. bool "Provide old way to pass kernel parameters"
  1169. help
  1170. This was deprecated in 2001 and announced to live on for 5 years.
  1171. Some old boot loaders still use this way.
  1172. endmenu
  1173. menu "Boot options"
  1174. # Compressed boot loader in ROM. Yes, we really want to ask about
  1175. # TEXT and BSS so we preserve their values in the config files.
  1176. config ZBOOT_ROM_TEXT
  1177. hex "Compressed ROM boot loader base address"
  1178. default "0"
  1179. help
  1180. The physical address at which the ROM-able zImage is to be
  1181. placed in the target. Platforms which normally make use of
  1182. ROM-able zImage formats normally set this to a suitable
  1183. value in their defconfig file.
  1184. If ZBOOT_ROM is not enabled, this has no effect.
  1185. config ZBOOT_ROM_BSS
  1186. hex "Compressed ROM boot loader BSS address"
  1187. default "0"
  1188. help
  1189. The base address of an area of read/write memory in the target
  1190. for the ROM-able zImage which must be available while the
  1191. decompressor is running. It must be large enough to hold the
  1192. entire decompressed kernel plus an additional 128 KiB.
  1193. Platforms which normally make use of ROM-able zImage formats
  1194. normally set this to a suitable value in their defconfig file.
  1195. If ZBOOT_ROM is not enabled, this has no effect.
  1196. config ZBOOT_ROM
  1197. bool "Compressed boot loader in ROM/flash"
  1198. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1199. help
  1200. Say Y here if you intend to execute your compressed kernel image
  1201. (zImage) directly from ROM or flash. If unsure, say N.
  1202. config CMDLINE
  1203. string "Default kernel command string"
  1204. default ""
  1205. help
  1206. On some architectures (EBSA110 and CATS), there is currently no way
  1207. for the boot loader to pass arguments to the kernel. For these
  1208. architectures, you should supply some command-line options at build
  1209. time by entering them here. As a minimum, you should specify the
  1210. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1211. config CMDLINE_FORCE
  1212. bool "Always use the default kernel command string"
  1213. depends on CMDLINE != ""
  1214. help
  1215. Always use the default kernel command string, even if the boot
  1216. loader passes other arguments to the kernel.
  1217. This is useful if you cannot or don't want to change the
  1218. command-line options your boot loader passes to the kernel.
  1219. If unsure, say N.
  1220. config XIP_KERNEL
  1221. bool "Kernel Execute-In-Place from ROM"
  1222. depends on !ZBOOT_ROM
  1223. help
  1224. Execute-In-Place allows the kernel to run from non-volatile storage
  1225. directly addressable by the CPU, such as NOR flash. This saves RAM
  1226. space since the text section of the kernel is not loaded from flash
  1227. to RAM. Read-write sections, such as the data section and stack,
  1228. are still copied to RAM. The XIP kernel is not compressed since
  1229. it has to run directly from flash, so it will take more space to
  1230. store it. The flash address used to link the kernel object files,
  1231. and for storing it, is configuration dependent. Therefore, if you
  1232. say Y here, you must know the proper physical address where to
  1233. store the kernel image depending on your own flash memory usage.
  1234. Also note that the make target becomes "make xipImage" rather than
  1235. "make zImage" or "make Image". The final kernel binary to put in
  1236. ROM memory will be arch/arm/boot/xipImage.
  1237. If unsure, say N.
  1238. config XIP_PHYS_ADDR
  1239. hex "XIP Kernel Physical Location"
  1240. depends on XIP_KERNEL
  1241. default "0x00080000"
  1242. help
  1243. This is the physical address in your flash memory the kernel will
  1244. be linked for and stored to. This address is dependent on your
  1245. own flash usage.
  1246. config KEXEC
  1247. bool "Kexec system call (EXPERIMENTAL)"
  1248. depends on EXPERIMENTAL
  1249. help
  1250. kexec is a system call that implements the ability to shutdown your
  1251. current kernel, and to start another kernel. It is like a reboot
  1252. but it is independent of the system firmware. And like a reboot
  1253. you can start any kernel with it, not just Linux.
  1254. It is an ongoing process to be certain the hardware in a machine
  1255. is properly shutdown, so do not be surprised if this code does not
  1256. initially work for you. It may help to enable device hotplugging
  1257. support.
  1258. config ATAGS_PROC
  1259. bool "Export atags in procfs"
  1260. depends on KEXEC
  1261. default y
  1262. help
  1263. Should the atags used to boot the kernel be exported in an "atags"
  1264. file in procfs. Useful with kexec.
  1265. config AUTO_ZRELADDR
  1266. bool "Auto calculation of the decompressed kernel image address"
  1267. depends on !ZBOOT_ROM && !ARCH_U300
  1268. help
  1269. ZRELADDR is the physical address where the decompressed kernel
  1270. image will be placed. If AUTO_ZRELADDR is selected, the address
  1271. will be determined at run-time by masking the current IP with
  1272. 0xf8000000. This assumes the zImage being placed in the first 128MB
  1273. from start of memory.
  1274. config ZRELADDR
  1275. hex "Physical address of the decompressed kernel image"
  1276. depends on !AUTO_ZRELADDR
  1277. default 0x00008000 if ARCH_BCMRING ||\
  1278. ARCH_CNS3XXX ||\
  1279. ARCH_DOVE ||\
  1280. ARCH_EBSA110 ||\
  1281. ARCH_FOOTBRIDGE ||\
  1282. ARCH_INTEGRATOR ||\
  1283. ARCH_IOP13XX ||\
  1284. ARCH_IOP33X ||\
  1285. ARCH_IXP2000 ||\
  1286. ARCH_IXP23XX ||\
  1287. ARCH_IXP4XX ||\
  1288. ARCH_KIRKWOOD ||\
  1289. ARCH_KS8695 ||\
  1290. ARCH_LOKI ||\
  1291. ARCH_MMP ||\
  1292. ARCH_MV78XX0 ||\
  1293. ARCH_NOMADIK ||\
  1294. ARCH_NUC93X ||\
  1295. ARCH_NS9XXX ||\
  1296. ARCH_ORION5X ||\
  1297. ARCH_SPEAR3XX ||\
  1298. ARCH_SPEAR6XX ||\
  1299. ARCH_U8500 ||\
  1300. ARCH_VERSATILE ||\
  1301. ARCH_W90X900
  1302. default 0x08008000 if ARCH_MX1 ||\
  1303. ARCH_SHARK
  1304. default 0x10008000 if ARCH_MSM ||\
  1305. ARCH_OMAP1 ||\
  1306. ARCH_RPC
  1307. default 0x20008000 if ARCH_S5P6440 ||\
  1308. ARCH_S5P6442 ||\
  1309. ARCH_S5PC100 ||\
  1310. ARCH_S5PV210
  1311. default 0x30008000 if ARCH_S3C2410 ||\
  1312. ARCH_S3C2400 ||\
  1313. ARCH_S3C2412 ||\
  1314. ARCH_S3C2416 ||\
  1315. ARCH_S3C2440 ||\
  1316. ARCH_S3C2443
  1317. default 0x40008000 if ARCH_STMP378X ||\
  1318. ARCH_STMP37XX ||\
  1319. ARCH_SH7372 ||\
  1320. ARCH_SH7377
  1321. default 0x50008000 if ARCH_S3C64XX ||\
  1322. ARCH_SH7367
  1323. default 0x60008000 if ARCH_VEXPRESS
  1324. default 0x80008000 if ARCH_MX25 ||\
  1325. ARCH_MX3 ||\
  1326. ARCH_NETX ||\
  1327. ARCH_OMAP2PLUS ||\
  1328. ARCH_PNX4008
  1329. default 0x90008000 if ARCH_MX5 ||\
  1330. ARCH_MX91231
  1331. default 0xa0008000 if ARCH_IOP32X ||\
  1332. ARCH_PXA ||\
  1333. MACH_MX27
  1334. default 0xc0008000 if ARCH_LH7A40X ||\
  1335. MACH_MX21
  1336. default 0xf0008000 if ARCH_AAEC2000 ||\
  1337. ARCH_L7200
  1338. default 0xc0028000 if ARCH_CLPS711X
  1339. default 0x70008000 if ARCH_AT91 && (ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
  1340. default 0x20008000 if ARCH_AT91 && !(ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
  1341. default 0xc0008000 if ARCH_DAVINCI && ARCH_DAVINCI_DA8XX
  1342. default 0x80008000 if ARCH_DAVINCI && !ARCH_DAVINCI_DA8XX
  1343. default 0x00008000 if ARCH_EP93XX && EP93XX_SDCE3_SYNC_PHYS_OFFSET
  1344. default 0xc0008000 if ARCH_EP93XX && EP93XX_SDCE0_PHYS_OFFSET
  1345. default 0xd0008000 if ARCH_EP93XX && EP93XX_SDCE1_PHYS_OFFSET
  1346. default 0xe0008000 if ARCH_EP93XX && EP93XX_SDCE2_PHYS_OFFSET
  1347. default 0xf0008000 if ARCH_EP93XX && EP93XX_SDCE3_ASYNC_PHYS_OFFSET
  1348. default 0x00008000 if ARCH_GEMINI && GEMINI_MEM_SWAP
  1349. default 0x10008000 if ARCH_GEMINI && !GEMINI_MEM_SWAP
  1350. default 0x70008000 if ARCH_REALVIEW && REALVIEW_HIGH_PHYS_OFFSET
  1351. default 0x00008000 if ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET
  1352. default 0xc0208000 if ARCH_SA1100 && SA1111
  1353. default 0xc0008000 if ARCH_SA1100 && !SA1111
  1354. default 0x30108000 if ARCH_S3C2410 && PM_H1940
  1355. default 0x28E08000 if ARCH_U300 && MACH_U300_SINGLE_RAM
  1356. default 0x48008000 if ARCH_U300 && !MACH_U300_SINGLE_RAM
  1357. help
  1358. ZRELADDR is the physical address where the decompressed kernel
  1359. image will be placed. ZRELADDR has to be specified when the
  1360. assumption of AUTO_ZRELADDR is not valid, or when ZBOOT_ROM is
  1361. selected.
  1362. endmenu
  1363. menu "CPU Power Management"
  1364. if ARCH_HAS_CPUFREQ
  1365. source "drivers/cpufreq/Kconfig"
  1366. config CPU_FREQ_SA1100
  1367. bool
  1368. config CPU_FREQ_SA1110
  1369. bool
  1370. config CPU_FREQ_INTEGRATOR
  1371. tristate "CPUfreq driver for ARM Integrator CPUs"
  1372. depends on ARCH_INTEGRATOR && CPU_FREQ
  1373. default y
  1374. help
  1375. This enables the CPUfreq driver for ARM Integrator CPUs.
  1376. For details, take a look at <file:Documentation/cpu-freq>.
  1377. If in doubt, say Y.
  1378. config CPU_FREQ_PXA
  1379. bool
  1380. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1381. default y
  1382. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1383. config CPU_FREQ_S3C64XX
  1384. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1385. depends on CPU_FREQ && CPU_S3C6410
  1386. config CPU_FREQ_S3C
  1387. bool
  1388. help
  1389. Internal configuration node for common cpufreq on Samsung SoC
  1390. config CPU_FREQ_S3C24XX
  1391. bool "CPUfreq driver for Samsung S3C24XX series CPUs"
  1392. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1393. select CPU_FREQ_S3C
  1394. help
  1395. This enables the CPUfreq driver for the Samsung S3C24XX family
  1396. of CPUs.
  1397. For details, take a look at <file:Documentation/cpu-freq>.
  1398. If in doubt, say N.
  1399. config CPU_FREQ_S3C24XX_PLL
  1400. bool "Support CPUfreq changing of PLL frequency"
  1401. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1402. help
  1403. Compile in support for changing the PLL frequency from the
  1404. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1405. after a frequency change, so by default it is not enabled.
  1406. This also means that the PLL tables for the selected CPU(s) will
  1407. be built which may increase the size of the kernel image.
  1408. config CPU_FREQ_S3C24XX_DEBUG
  1409. bool "Debug CPUfreq Samsung driver core"
  1410. depends on CPU_FREQ_S3C24XX
  1411. help
  1412. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1413. config CPU_FREQ_S3C24XX_IODEBUG
  1414. bool "Debug CPUfreq Samsung driver IO timing"
  1415. depends on CPU_FREQ_S3C24XX
  1416. help
  1417. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1418. config CPU_FREQ_S3C24XX_DEBUGFS
  1419. bool "Export debugfs for CPUFreq"
  1420. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1421. help
  1422. Export status information via debugfs.
  1423. endif
  1424. source "drivers/cpuidle/Kconfig"
  1425. endmenu
  1426. menu "Floating point emulation"
  1427. comment "At least one emulation must be selected"
  1428. config FPE_NWFPE
  1429. bool "NWFPE math emulation"
  1430. depends on !AEABI || OABI_COMPAT
  1431. ---help---
  1432. Say Y to include the NWFPE floating point emulator in the kernel.
  1433. This is necessary to run most binaries. Linux does not currently
  1434. support floating point hardware so you need to say Y here even if
  1435. your machine has an FPA or floating point co-processor podule.
  1436. You may say N here if you are going to load the Acorn FPEmulator
  1437. early in the bootup.
  1438. config FPE_NWFPE_XP
  1439. bool "Support extended precision"
  1440. depends on FPE_NWFPE
  1441. help
  1442. Say Y to include 80-bit support in the kernel floating-point
  1443. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1444. Note that gcc does not generate 80-bit operations by default,
  1445. so in most cases this option only enlarges the size of the
  1446. floating point emulator without any good reason.
  1447. You almost surely want to say N here.
  1448. config FPE_FASTFPE
  1449. bool "FastFPE math emulation (EXPERIMENTAL)"
  1450. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1451. ---help---
  1452. Say Y here to include the FAST floating point emulator in the kernel.
  1453. This is an experimental much faster emulator which now also has full
  1454. precision for the mantissa. It does not support any exceptions.
  1455. It is very simple, and approximately 3-6 times faster than NWFPE.
  1456. It should be sufficient for most programs. It may be not suitable
  1457. for scientific calculations, but you have to check this for yourself.
  1458. If you do not feel you need a faster FP emulation you should better
  1459. choose NWFPE.
  1460. config VFP
  1461. bool "VFP-format floating point maths"
  1462. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1463. help
  1464. Say Y to include VFP support code in the kernel. This is needed
  1465. if your hardware includes a VFP unit.
  1466. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1467. release notes and additional status information.
  1468. Say N if your target does not have VFP hardware.
  1469. config VFPv3
  1470. bool
  1471. depends on VFP
  1472. default y if CPU_V7
  1473. config NEON
  1474. bool "Advanced SIMD (NEON) Extension support"
  1475. depends on VFPv3 && CPU_V7
  1476. help
  1477. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1478. Extension.
  1479. endmenu
  1480. menu "Userspace binary formats"
  1481. source "fs/Kconfig.binfmt"
  1482. config ARTHUR
  1483. tristate "RISC OS personality"
  1484. depends on !AEABI
  1485. help
  1486. Say Y here to include the kernel code necessary if you want to run
  1487. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1488. experimental; if this sounds frightening, say N and sleep in peace.
  1489. You can also say M here to compile this support as a module (which
  1490. will be called arthur).
  1491. endmenu
  1492. menu "Power management options"
  1493. source "kernel/power/Kconfig"
  1494. config ARCH_SUSPEND_POSSIBLE
  1495. def_bool y
  1496. endmenu
  1497. source "net/Kconfig"
  1498. source "drivers/Kconfig"
  1499. source "fs/Kconfig"
  1500. source "arch/arm/Kconfig.debug"
  1501. source "security/Kconfig"
  1502. source "crypto/Kconfig"
  1503. source "lib/Kconfig"