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
  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. if OPROFILE
  143. config OPROFILE_ARMV6
  144. def_bool y
  145. depends on CPU_V6 && !SMP
  146. select OPROFILE_ARM11_CORE
  147. config OPROFILE_MPCORE
  148. def_bool y
  149. depends on CPU_V6 && SMP
  150. select OPROFILE_ARM11_CORE
  151. config OPROFILE_ARM11_CORE
  152. bool
  153. config OPROFILE_ARMV7
  154. def_bool y
  155. depends on CPU_V7 && !SMP
  156. bool
  157. endif
  158. config VECTORS_BASE
  159. hex
  160. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  161. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  162. default 0x00000000
  163. help
  164. The base address of exception vectors.
  165. source "init/Kconfig"
  166. source "kernel/Kconfig.freezer"
  167. menu "System Type"
  168. config MMU
  169. bool "MMU-based Paged Memory Management Support"
  170. default y
  171. help
  172. Select if you want MMU-based virtualised addressing space
  173. support by paged memory management. If unsure, say 'Y'.
  174. #
  175. # The "ARM system type" choice list is ordered alphabetically by option
  176. # text. Please add new entries in the option alphabetic order.
  177. #
  178. choice
  179. prompt "ARM system type"
  180. default ARCH_VERSATILE
  181. config ARCH_AAEC2000
  182. bool "Agilent AAEC-2000 based"
  183. select CPU_ARM920T
  184. select ARM_AMBA
  185. select HAVE_CLK
  186. select ARCH_USES_GETTIMEOFFSET
  187. help
  188. This enables support for systems based on the Agilent AAEC-2000
  189. config ARCH_INTEGRATOR
  190. bool "ARM Ltd. Integrator family"
  191. select ARM_AMBA
  192. select ARCH_HAS_CPUFREQ
  193. select COMMON_CLKDEV
  194. select ICST
  195. select GENERIC_TIME
  196. select GENERIC_CLOCKEVENTS
  197. select PLAT_VERSATILE
  198. help
  199. Support for ARM's Integrator platform.
  200. config ARCH_REALVIEW
  201. bool "ARM Ltd. RealView family"
  202. select ARM_AMBA
  203. select COMMON_CLKDEV
  204. select ICST
  205. select GENERIC_TIME
  206. select GENERIC_CLOCKEVENTS
  207. select ARCH_WANT_OPTIONAL_GPIOLIB
  208. select PLAT_VERSATILE
  209. select ARM_TIMER_SP804
  210. help
  211. This enables support for ARM Ltd RealView boards.
  212. config ARCH_VERSATILE
  213. bool "ARM Ltd. Versatile family"
  214. select ARM_AMBA
  215. select ARM_VIC
  216. select COMMON_CLKDEV
  217. select ICST
  218. select GENERIC_TIME
  219. select GENERIC_CLOCKEVENTS
  220. select ARCH_WANT_OPTIONAL_GPIOLIB
  221. select PLAT_VERSATILE
  222. select ARM_TIMER_SP804
  223. help
  224. This enables support for ARM Ltd Versatile board.
  225. config ARCH_VEXPRESS
  226. bool "ARM Ltd. Versatile Express family"
  227. select ARCH_WANT_OPTIONAL_GPIOLIB
  228. select ARM_AMBA
  229. select ARM_TIMER_SP804
  230. select COMMON_CLKDEV
  231. select GENERIC_CLOCKEVENTS
  232. select GENERIC_TIME
  233. select HAVE_CLK
  234. select ICST
  235. select PLAT_VERSATILE
  236. help
  237. This enables support for the ARM Ltd Versatile Express boards.
  238. config ARCH_AT91
  239. bool "Atmel AT91"
  240. select GENERIC_GPIO
  241. select ARCH_REQUIRE_GPIOLIB
  242. select HAVE_CLK
  243. select ARCH_USES_GETTIMEOFFSET
  244. help
  245. This enables support for systems based on the Atmel AT91RM9200,
  246. AT91SAM9 and AT91CAP9 processors.
  247. config ARCH_BCMRING
  248. bool "Broadcom BCMRING"
  249. depends on MMU
  250. select CPU_V6
  251. select ARM_AMBA
  252. select COMMON_CLKDEV
  253. select GENERIC_TIME
  254. select GENERIC_CLOCKEVENTS
  255. select ARCH_WANT_OPTIONAL_GPIOLIB
  256. help
  257. Support for Broadcom's BCMRing platform.
  258. config ARCH_CLPS711X
  259. bool "Cirrus Logic CLPS711x/EP721x-based"
  260. select CPU_ARM720T
  261. select ARCH_USES_GETTIMEOFFSET
  262. help
  263. Support for Cirrus Logic 711x/721x based boards.
  264. config ARCH_GEMINI
  265. bool "Cortina Systems Gemini"
  266. select CPU_FA526
  267. select GENERIC_GPIO
  268. select ARCH_REQUIRE_GPIOLIB
  269. select ARCH_USES_GETTIMEOFFSET
  270. help
  271. Support for the Cortina Systems Gemini family SoCs
  272. config ARCH_EBSA110
  273. bool "EBSA-110"
  274. select CPU_SA110
  275. select ISA
  276. select NO_IOPORT
  277. select ARCH_USES_GETTIMEOFFSET
  278. help
  279. This is an evaluation board for the StrongARM processor available
  280. from Digital. It has limited hardware on-board, including an
  281. Ethernet interface, two PCMCIA sockets, two serial ports and a
  282. parallel port.
  283. config ARCH_EP93XX
  284. bool "EP93xx-based"
  285. select CPU_ARM920T
  286. select ARM_AMBA
  287. select ARM_VIC
  288. select GENERIC_GPIO
  289. select COMMON_CLKDEV
  290. select ARCH_REQUIRE_GPIOLIB
  291. select ARCH_HAS_HOLES_MEMORYMODEL
  292. select ARCH_USES_GETTIMEOFFSET
  293. help
  294. This enables support for the Cirrus EP93xx series of CPUs.
  295. config ARCH_FOOTBRIDGE
  296. bool "FootBridge"
  297. select CPU_SA110
  298. select FOOTBRIDGE
  299. select ARCH_USES_GETTIMEOFFSET
  300. help
  301. Support for systems based on the DC21285 companion chip
  302. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  303. config ARCH_MXC
  304. bool "Freescale MXC/iMX-based"
  305. select GENERIC_TIME
  306. select GENERIC_CLOCKEVENTS
  307. select ARCH_REQUIRE_GPIOLIB
  308. select COMMON_CLKDEV
  309. help
  310. Support for Freescale MXC/iMX-based family of processors
  311. config ARCH_STMP3XXX
  312. bool "Freescale STMP3xxx"
  313. select CPU_ARM926T
  314. select COMMON_CLKDEV
  315. select ARCH_REQUIRE_GPIOLIB
  316. select GENERIC_TIME
  317. select GENERIC_CLOCKEVENTS
  318. select GENERIC_GPIO
  319. select USB_ARCH_HAS_EHCI
  320. help
  321. Support for systems based on the Freescale 3xxx CPUs.
  322. config ARCH_NETX
  323. bool "Hilscher NetX based"
  324. select CPU_ARM926T
  325. select ARM_VIC
  326. select GENERIC_CLOCKEVENTS
  327. select GENERIC_TIME
  328. help
  329. This enables support for systems based on the Hilscher NetX Soc
  330. config ARCH_H720X
  331. bool "Hynix HMS720x-based"
  332. select CPU_ARM720T
  333. select ISA_DMA_API
  334. select ARCH_USES_GETTIMEOFFSET
  335. help
  336. This enables support for systems based on the Hynix HMS720x
  337. config ARCH_IOP13XX
  338. bool "IOP13xx-based"
  339. depends on MMU
  340. select CPU_XSC3
  341. select PLAT_IOP
  342. select PCI
  343. select ARCH_SUPPORTS_MSI
  344. select VMSPLIT_1G
  345. help
  346. Support for Intel's IOP13XX (XScale) family of processors.
  347. config ARCH_IOP32X
  348. bool "IOP32x-based"
  349. depends on MMU
  350. select CPU_XSCALE
  351. select PLAT_IOP
  352. select PCI
  353. select GENERIC_GPIO
  354. select ARCH_REQUIRE_GPIOLIB
  355. help
  356. Support for Intel's 80219 and IOP32X (XScale) family of
  357. processors.
  358. config ARCH_IOP33X
  359. bool "IOP33x-based"
  360. depends on MMU
  361. select CPU_XSCALE
  362. select PLAT_IOP
  363. select PCI
  364. select GENERIC_GPIO
  365. select ARCH_REQUIRE_GPIOLIB
  366. help
  367. Support for Intel's IOP33X (XScale) family of processors.
  368. config ARCH_IXP23XX
  369. bool "IXP23XX-based"
  370. depends on MMU
  371. select CPU_XSC3
  372. select PCI
  373. select ARCH_USES_GETTIMEOFFSET
  374. help
  375. Support for Intel's IXP23xx (XScale) family of processors.
  376. config ARCH_IXP2000
  377. bool "IXP2400/2800-based"
  378. depends on MMU
  379. select CPU_XSCALE
  380. select PCI
  381. select ARCH_USES_GETTIMEOFFSET
  382. help
  383. Support for Intel's IXP2400/2800 (XScale) family of processors.
  384. config ARCH_IXP4XX
  385. bool "IXP4xx-based"
  386. depends on MMU
  387. select CPU_XSCALE
  388. select GENERIC_GPIO
  389. select GENERIC_TIME
  390. select GENERIC_CLOCKEVENTS
  391. select DMABOUNCE if PCI
  392. help
  393. Support for Intel's IXP4XX (XScale) family of processors.
  394. config ARCH_L7200
  395. bool "LinkUp-L7200"
  396. select CPU_ARM720T
  397. select FIQ
  398. select ARCH_USES_GETTIMEOFFSET
  399. help
  400. Say Y here if you intend to run this kernel on a LinkUp Systems
  401. L7200 Software Development Board which uses an ARM720T processor.
  402. Information on this board can be obtained at:
  403. <http://www.linkupsys.com/>
  404. If you have any questions or comments about the Linux kernel port
  405. to this board, send e-mail to <sjhill@cotw.com>.
  406. config ARCH_DOVE
  407. bool "Marvell Dove"
  408. select PCI
  409. select GENERIC_GPIO
  410. select ARCH_REQUIRE_GPIOLIB
  411. select GENERIC_TIME
  412. select GENERIC_CLOCKEVENTS
  413. select PLAT_ORION
  414. help
  415. Support for the Marvell Dove SoC 88AP510
  416. config ARCH_KIRKWOOD
  417. bool "Marvell Kirkwood"
  418. select CPU_FEROCEON
  419. select PCI
  420. select GENERIC_GPIO
  421. select ARCH_REQUIRE_GPIOLIB
  422. select GENERIC_TIME
  423. select GENERIC_CLOCKEVENTS
  424. select PLAT_ORION
  425. help
  426. Support for the following Marvell Kirkwood series SoCs:
  427. 88F6180, 88F6192 and 88F6281.
  428. config ARCH_LOKI
  429. bool "Marvell Loki (88RC8480)"
  430. select CPU_FEROCEON
  431. select GENERIC_TIME
  432. select GENERIC_CLOCKEVENTS
  433. select PLAT_ORION
  434. help
  435. Support for the Marvell Loki (88RC8480) SoC.
  436. config ARCH_MV78XX0
  437. bool "Marvell MV78xx0"
  438. select CPU_FEROCEON
  439. select PCI
  440. select GENERIC_GPIO
  441. select ARCH_REQUIRE_GPIOLIB
  442. select GENERIC_TIME
  443. select GENERIC_CLOCKEVENTS
  444. select PLAT_ORION
  445. help
  446. Support for the following Marvell MV78xx0 series SoCs:
  447. MV781x0, MV782x0.
  448. config ARCH_ORION5X
  449. bool "Marvell Orion"
  450. depends on MMU
  451. select CPU_FEROCEON
  452. select PCI
  453. select GENERIC_GPIO
  454. select ARCH_REQUIRE_GPIOLIB
  455. select GENERIC_TIME
  456. select GENERIC_CLOCKEVENTS
  457. select PLAT_ORION
  458. help
  459. Support for the following Marvell Orion 5x series SoCs:
  460. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  461. Orion-2 (5281), Orion-1-90 (6183).
  462. config ARCH_MMP
  463. bool "Marvell PXA168/910/MMP2"
  464. depends on MMU
  465. select GENERIC_GPIO
  466. select ARCH_REQUIRE_GPIOLIB
  467. select COMMON_CLKDEV
  468. select GENERIC_TIME
  469. select GENERIC_CLOCKEVENTS
  470. select TICK_ONESHOT
  471. select PLAT_PXA
  472. help
  473. Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
  474. config ARCH_KS8695
  475. bool "Micrel/Kendin KS8695"
  476. select CPU_ARM922T
  477. select GENERIC_GPIO
  478. select ARCH_REQUIRE_GPIOLIB
  479. select ARCH_USES_GETTIMEOFFSET
  480. help
  481. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  482. System-on-Chip devices.
  483. config ARCH_NS9XXX
  484. bool "NetSilicon NS9xxx"
  485. select CPU_ARM926T
  486. select GENERIC_GPIO
  487. select GENERIC_TIME
  488. select GENERIC_CLOCKEVENTS
  489. select HAVE_CLK
  490. help
  491. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  492. System.
  493. <http://www.digi.com/products/microprocessors/index.jsp>
  494. config ARCH_W90X900
  495. bool "Nuvoton W90X900 CPU"
  496. select CPU_ARM926T
  497. select ARCH_REQUIRE_GPIOLIB
  498. select GENERIC_GPIO
  499. select COMMON_CLKDEV
  500. select GENERIC_TIME
  501. select GENERIC_CLOCKEVENTS
  502. help
  503. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  504. At present, the w90x900 has been renamed nuc900, regarding
  505. the ARM series product line, you can login the following
  506. link address to know more.
  507. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  508. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  509. config ARCH_NUC93X
  510. bool "Nuvoton NUC93X CPU"
  511. select CPU_ARM926T
  512. select COMMON_CLKDEV
  513. help
  514. Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
  515. low-power and high performance MPEG-4/JPEG multimedia controller chip.
  516. config ARCH_PNX4008
  517. bool "Philips Nexperia PNX4008 Mobile"
  518. select CPU_ARM926T
  519. select COMMON_CLKDEV
  520. select ARCH_USES_GETTIMEOFFSET
  521. help
  522. This enables support for Philips PNX4008 mobile platform.
  523. config ARCH_PXA
  524. bool "PXA2xx/PXA3xx-based"
  525. depends on MMU
  526. select ARCH_MTD_XIP
  527. select ARCH_HAS_CPUFREQ
  528. select GENERIC_GPIO
  529. select COMMON_CLKDEV
  530. select ARCH_REQUIRE_GPIOLIB
  531. select GENERIC_TIME
  532. select GENERIC_CLOCKEVENTS
  533. select TICK_ONESHOT
  534. select PLAT_PXA
  535. help
  536. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  537. config ARCH_MSM
  538. bool "Qualcomm MSM"
  539. select CPU_V6
  540. select GENERIC_TIME
  541. select GENERIC_CLOCKEVENTS
  542. help
  543. Support for Qualcomm MSM7K based systems. This runs on the ARM11
  544. apps processor of the MSM7K and depends on a shared memory
  545. interface to the ARM9 modem processor which runs the baseband stack
  546. and controls some vital subsystems (clock and power control, etc).
  547. config ARCH_SHMOBILE
  548. bool "Renesas SH-Mobile"
  549. help
  550. Support for Renesas's SH-Mobile ARM platforms
  551. config ARCH_RPC
  552. bool "RiscPC"
  553. select ARCH_ACORN
  554. select FIQ
  555. select TIMER_ACORN
  556. select ARCH_MAY_HAVE_PC_FDC
  557. select HAVE_PATA_PLATFORM
  558. select ISA_DMA_API
  559. select NO_IOPORT
  560. select ARCH_SPARSEMEM_ENABLE
  561. select ARCH_USES_GETTIMEOFFSET
  562. help
  563. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  564. CD-ROM interface, serial and parallel port, and the floppy drive.
  565. config ARCH_SA1100
  566. bool "SA1100-based"
  567. select CPU_SA1100
  568. select ISA
  569. select ARCH_SPARSEMEM_ENABLE
  570. select ARCH_MTD_XIP
  571. select ARCH_HAS_CPUFREQ
  572. select CPU_FREQ
  573. select GENERIC_GPIO
  574. select GENERIC_TIME
  575. select GENERIC_CLOCKEVENTS
  576. select HAVE_CLK
  577. select TICK_ONESHOT
  578. select ARCH_REQUIRE_GPIOLIB
  579. help
  580. Support for StrongARM 11x0 based boards.
  581. config ARCH_S3C2410
  582. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  583. select GENERIC_GPIO
  584. select ARCH_HAS_CPUFREQ
  585. select HAVE_CLK
  586. select ARCH_USES_GETTIMEOFFSET
  587. help
  588. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  589. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  590. the Samsung SMDK2410 development board (and derivatives).
  591. config ARCH_S3C64XX
  592. bool "Samsung S3C64XX"
  593. select PLAT_SAMSUNG
  594. select CPU_V6
  595. select GENERIC_GPIO
  596. select ARM_VIC
  597. select HAVE_CLK
  598. select NO_IOPORT
  599. select ARCH_USES_GETTIMEOFFSET
  600. select ARCH_HAS_CPUFREQ
  601. select ARCH_REQUIRE_GPIOLIB
  602. select SAMSUNG_CLKSRC
  603. select SAMSUNG_IRQ_VIC_TIMER
  604. select SAMSUNG_IRQ_UART
  605. select S3C_GPIO_TRACK
  606. select S3C_GPIO_PULL_UPDOWN
  607. select S3C_GPIO_CFG_S3C24XX
  608. select S3C_GPIO_CFG_S3C64XX
  609. select S3C_DEV_NAND
  610. select USB_ARCH_HAS_OHCI
  611. select SAMSUNG_GPIOLIB_4BIT
  612. help
  613. Samsung S3C64XX series based systems
  614. config ARCH_S5P6440
  615. bool "Samsung S5P6440"
  616. select CPU_V6
  617. select GENERIC_GPIO
  618. select HAVE_CLK
  619. help
  620. Samsung S5P6440 CPU based systems
  621. config ARCH_S5P6442
  622. bool "Samsung S5P6442"
  623. select CPU_V6
  624. select GENERIC_GPIO
  625. select HAVE_CLK
  626. help
  627. Samsung S5P6442 CPU based systems
  628. config ARCH_S5PC1XX
  629. bool "Samsung S5PC1XX"
  630. select GENERIC_GPIO
  631. select HAVE_CLK
  632. select CPU_V7
  633. select ARM_L1_CACHE_SHIFT_6
  634. help
  635. Samsung S5PC1XX series based systems
  636. config ARCH_S5PV210
  637. bool "Samsung S5PV210/S5PC110"
  638. select CPU_V7
  639. select GENERIC_GPIO
  640. select HAVE_CLK
  641. select ARM_L1_CACHE_SHIFT_6
  642. help
  643. Samsung S5PV210/S5PC110 series based systems
  644. config ARCH_SHARK
  645. bool "Shark"
  646. select CPU_SA110
  647. select ISA
  648. select ISA_DMA
  649. select ZONE_DMA
  650. select PCI
  651. select ARCH_USES_GETTIMEOFFSET
  652. help
  653. Support for the StrongARM based Digital DNARD machine, also known
  654. as "Shark" (<http://www.shark-linux.de/shark.html>).
  655. config ARCH_LH7A40X
  656. bool "Sharp LH7A40X"
  657. select CPU_ARM922T
  658. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  659. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  660. select ARCH_USES_GETTIMEOFFSET
  661. help
  662. Say Y here for systems based on one of the Sharp LH7A40X
  663. System on a Chip processors. These CPUs include an ARM922T
  664. core with a wide array of integrated devices for
  665. hand-held and low-power applications.
  666. config ARCH_U300
  667. bool "ST-Ericsson U300 Series"
  668. depends on MMU
  669. select CPU_ARM926T
  670. select HAVE_TCM
  671. select ARM_AMBA
  672. select ARM_VIC
  673. select GENERIC_TIME
  674. select GENERIC_CLOCKEVENTS
  675. select COMMON_CLKDEV
  676. select GENERIC_GPIO
  677. help
  678. Support for ST-Ericsson U300 series mobile platforms.
  679. config ARCH_U8500
  680. bool "ST-Ericsson U8500 Series"
  681. select CPU_V7
  682. select ARM_AMBA
  683. select GENERIC_TIME
  684. select GENERIC_CLOCKEVENTS
  685. select COMMON_CLKDEV
  686. select ARCH_REQUIRE_GPIOLIB
  687. help
  688. Support for ST-Ericsson's Ux500 architecture
  689. config ARCH_NOMADIK
  690. bool "STMicroelectronics Nomadik"
  691. select ARM_AMBA
  692. select ARM_VIC
  693. select CPU_ARM926T
  694. select COMMON_CLKDEV
  695. select GENERIC_TIME
  696. select GENERIC_CLOCKEVENTS
  697. select GENERIC_GPIO
  698. select ARCH_REQUIRE_GPIOLIB
  699. help
  700. Support for the Nomadik platform by ST-Ericsson
  701. config ARCH_DAVINCI
  702. bool "TI DaVinci"
  703. select CPU_ARM926T
  704. select GENERIC_TIME
  705. select GENERIC_CLOCKEVENTS
  706. select GENERIC_GPIO
  707. select ARCH_REQUIRE_GPIOLIB
  708. select ZONE_DMA
  709. select HAVE_IDE
  710. select COMMON_CLKDEV
  711. select GENERIC_ALLOCATOR
  712. select ARCH_HAS_HOLES_MEMORYMODEL
  713. help
  714. Support for TI's DaVinci platform.
  715. config ARCH_OMAP
  716. bool "TI OMAP"
  717. select GENERIC_GPIO
  718. select HAVE_CLK
  719. select ARCH_REQUIRE_GPIOLIB
  720. select ARCH_HAS_CPUFREQ
  721. select GENERIC_TIME
  722. select GENERIC_CLOCKEVENTS
  723. select ARCH_HAS_HOLES_MEMORYMODEL
  724. help
  725. Support for TI's OMAP platform (OMAP1 and OMAP2).
  726. config PLAT_SPEAR
  727. bool "ST SPEAr"
  728. select ARM_AMBA
  729. select ARCH_REQUIRE_GPIOLIB
  730. select COMMON_CLKDEV
  731. select GENERIC_CLOCKEVENTS
  732. select GENERIC_GPIO
  733. select GENERIC_TIME
  734. select HAVE_CLK
  735. help
  736. Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
  737. endchoice
  738. #
  739. # This is sorted alphabetically by mach-* pathname. However, plat-*
  740. # Kconfigs may be included either alphabetically (according to the
  741. # plat- suffix) or along side the corresponding mach-* source.
  742. #
  743. source "arch/arm/mach-aaec2000/Kconfig"
  744. source "arch/arm/mach-at91/Kconfig"
  745. source "arch/arm/mach-bcmring/Kconfig"
  746. source "arch/arm/mach-clps711x/Kconfig"
  747. source "arch/arm/mach-davinci/Kconfig"
  748. source "arch/arm/mach-dove/Kconfig"
  749. source "arch/arm/mach-ep93xx/Kconfig"
  750. source "arch/arm/mach-footbridge/Kconfig"
  751. source "arch/arm/mach-gemini/Kconfig"
  752. source "arch/arm/mach-h720x/Kconfig"
  753. source "arch/arm/mach-integrator/Kconfig"
  754. source "arch/arm/mach-iop32x/Kconfig"
  755. source "arch/arm/mach-iop33x/Kconfig"
  756. source "arch/arm/mach-iop13xx/Kconfig"
  757. source "arch/arm/mach-ixp4xx/Kconfig"
  758. source "arch/arm/mach-ixp2000/Kconfig"
  759. source "arch/arm/mach-ixp23xx/Kconfig"
  760. source "arch/arm/mach-kirkwood/Kconfig"
  761. source "arch/arm/mach-ks8695/Kconfig"
  762. source "arch/arm/mach-lh7a40x/Kconfig"
  763. source "arch/arm/mach-loki/Kconfig"
  764. source "arch/arm/mach-msm/Kconfig"
  765. source "arch/arm/mach-mv78xx0/Kconfig"
  766. source "arch/arm/plat-mxc/Kconfig"
  767. source "arch/arm/mach-netx/Kconfig"
  768. source "arch/arm/mach-nomadik/Kconfig"
  769. source "arch/arm/plat-nomadik/Kconfig"
  770. source "arch/arm/mach-ns9xxx/Kconfig"
  771. source "arch/arm/mach-nuc93x/Kconfig"
  772. source "arch/arm/plat-omap/Kconfig"
  773. source "arch/arm/mach-omap1/Kconfig"
  774. source "arch/arm/mach-omap2/Kconfig"
  775. source "arch/arm/mach-orion5x/Kconfig"
  776. source "arch/arm/mach-pxa/Kconfig"
  777. source "arch/arm/plat-pxa/Kconfig"
  778. source "arch/arm/mach-mmp/Kconfig"
  779. source "arch/arm/mach-realview/Kconfig"
  780. source "arch/arm/mach-sa1100/Kconfig"
  781. source "arch/arm/plat-samsung/Kconfig"
  782. source "arch/arm/plat-s3c24xx/Kconfig"
  783. source "arch/arm/plat-s5p/Kconfig"
  784. source "arch/arm/plat-s5pc1xx/Kconfig"
  785. source "arch/arm/plat-spear/Kconfig"
  786. if ARCH_S3C2410
  787. source "arch/arm/mach-s3c2400/Kconfig"
  788. source "arch/arm/mach-s3c2410/Kconfig"
  789. source "arch/arm/mach-s3c2412/Kconfig"
  790. source "arch/arm/mach-s3c2440/Kconfig"
  791. source "arch/arm/mach-s3c2443/Kconfig"
  792. endif
  793. if ARCH_S3C64XX
  794. source "arch/arm/mach-s3c64xx/Kconfig"
  795. endif
  796. source "arch/arm/mach-s5p6440/Kconfig"
  797. source "arch/arm/mach-s5p6442/Kconfig"
  798. if ARCH_S5PC1XX
  799. source "arch/arm/mach-s5pc100/Kconfig"
  800. endif
  801. source "arch/arm/mach-s5pv210/Kconfig"
  802. source "arch/arm/mach-shmobile/Kconfig"
  803. source "arch/arm/plat-stmp3xxx/Kconfig"
  804. source "arch/arm/mach-u300/Kconfig"
  805. source "arch/arm/mach-ux500/Kconfig"
  806. source "arch/arm/mach-versatile/Kconfig"
  807. source "arch/arm/mach-vexpress/Kconfig"
  808. source "arch/arm/mach-w90x900/Kconfig"
  809. # Definitions to make life easier
  810. config ARCH_ACORN
  811. bool
  812. config PLAT_IOP
  813. bool
  814. select GENERIC_CLOCKEVENTS
  815. select GENERIC_TIME
  816. config PLAT_ORION
  817. bool
  818. config PLAT_PXA
  819. bool
  820. config PLAT_VERSATILE
  821. bool
  822. config ARM_TIMER_SP804
  823. bool
  824. source arch/arm/mm/Kconfig
  825. config IWMMXT
  826. bool "Enable iWMMXt support"
  827. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
  828. default y if PXA27x || PXA3xx || ARCH_MMP
  829. help
  830. Enable support for iWMMXt context switching at run time if
  831. running on a CPU that supports it.
  832. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  833. config XSCALE_PMU
  834. bool
  835. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  836. default y
  837. config CPU_HAS_PMU
  838. depends on CPU_V6 || CPU_V7 || XSCALE_PMU
  839. default y
  840. bool
  841. if !MMU
  842. source "arch/arm/Kconfig-nommu"
  843. endif
  844. config ARM_ERRATA_411920
  845. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  846. depends on CPU_V6 && !SMP
  847. help
  848. Invalidation of the Instruction Cache operation can
  849. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  850. It does not affect the MPCore. This option enables the ARM Ltd.
  851. recommended workaround.
  852. config ARM_ERRATA_430973
  853. bool "ARM errata: Stale prediction on replaced interworking branch"
  854. depends on CPU_V7
  855. help
  856. This option enables the workaround for the 430973 Cortex-A8
  857. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  858. interworking branch is replaced with another code sequence at the
  859. same virtual address, whether due to self-modifying code or virtual
  860. to physical address re-mapping, Cortex-A8 does not recover from the
  861. stale interworking branch prediction. This results in Cortex-A8
  862. executing the new code sequence in the incorrect ARM or Thumb state.
  863. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  864. and also flushes the branch target cache at every context switch.
  865. Note that setting specific bits in the ACTLR register may not be
  866. available in non-secure mode.
  867. config ARM_ERRATA_458693
  868. bool "ARM errata: Processor deadlock when a false hazard is created"
  869. depends on CPU_V7
  870. help
  871. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  872. erratum. For very specific sequences of memory operations, it is
  873. possible for a hazard condition intended for a cache line to instead
  874. be incorrectly associated with a different cache line. This false
  875. hazard might then cause a processor deadlock. The workaround enables
  876. the L1 caching of the NEON accesses and disables the PLD instruction
  877. in the ACTLR register. Note that setting specific bits in the ACTLR
  878. register may not be available in non-secure mode.
  879. config ARM_ERRATA_460075
  880. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  881. depends on CPU_V7
  882. help
  883. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  884. erratum. Any asynchronous access to the L2 cache may encounter a
  885. situation in which recent store transactions to the L2 cache are lost
  886. and overwritten with stale memory contents from external memory. The
  887. workaround disables the write-allocate mode for the L2 cache via the
  888. ACTLR register. Note that setting specific bits in the ACTLR register
  889. may not be available in non-secure mode.
  890. config PL310_ERRATA_588369
  891. bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
  892. depends on CACHE_L2X0 && ARCH_OMAP4
  893. help
  894. The PL310 L2 cache controller implements three types of Clean &
  895. Invalidate maintenance operations: by Physical Address
  896. (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
  897. They are architecturally defined to behave as the execution of a
  898. clean operation followed immediately by an invalidate operation,
  899. both performing to the same memory location. This functionality
  900. is not correctly implemented in PL310 as clean lines are not
  901. invalidated as a result of these operations. Note that this errata
  902. uses Texas Instrument's secure monitor api.
  903. endmenu
  904. source "arch/arm/common/Kconfig"
  905. config FORCE_MAX_ZONEORDER
  906. int
  907. depends on SA1111
  908. default "9"
  909. menu "Bus support"
  910. config ARM_AMBA
  911. bool
  912. config ISA
  913. bool
  914. help
  915. Find out whether you have ISA slots on your motherboard. ISA is the
  916. name of a bus system, i.e. the way the CPU talks to the other stuff
  917. inside your box. Other bus systems are PCI, EISA, MicroChannel
  918. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  919. newer boards don't support it. If you have ISA, say Y, otherwise N.
  920. # Select ISA DMA controller support
  921. config ISA_DMA
  922. bool
  923. select ISA_DMA_API
  924. # Select ISA DMA interface
  925. config ISA_DMA_API
  926. bool
  927. config PCI
  928. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  929. help
  930. Find out whether you have a PCI motherboard. PCI is the name of a
  931. bus system, i.e. the way the CPU talks to the other stuff inside
  932. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  933. VESA. If you have PCI, say Y, otherwise N.
  934. config PCI_DOMAINS
  935. bool
  936. depends on PCI
  937. config PCI_SYSCALL
  938. def_bool PCI
  939. # Select the host bridge type
  940. config PCI_HOST_VIA82C505
  941. bool
  942. depends on PCI && ARCH_SHARK
  943. default y
  944. config PCI_HOST_ITE8152
  945. bool
  946. depends on PCI && MACH_ARMCORE
  947. default y
  948. select DMABOUNCE
  949. source "drivers/pci/Kconfig"
  950. source "drivers/pcmcia/Kconfig"
  951. endmenu
  952. menu "Kernel Features"
  953. source "kernel/time/Kconfig"
  954. config SMP
  955. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  956. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
  957. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
  958. ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
  959. depends on GENERIC_CLOCKEVENTS
  960. select USE_GENERIC_SMP_HELPERS
  961. select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
  962. help
  963. This enables support for systems with more than one CPU. If you have
  964. a system with only one CPU, like most personal computers, say N. If
  965. you have a system with more than one CPU, say Y.
  966. If you say N here, the kernel will run on single and multiprocessor
  967. machines, but will use only one CPU of a multiprocessor machine. If
  968. you say Y here, the kernel will run on many, but not all, single
  969. processor machines. On a single processor machine, the kernel will
  970. run faster if you say N here.
  971. See also <file:Documentation/i386/IO-APIC.txt>,
  972. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  973. <http://www.linuxdoc.org/docs.html#howto>.
  974. If you don't know what to do here, say N.
  975. config HAVE_ARM_SCU
  976. bool
  977. depends on SMP
  978. help
  979. This option enables support for the ARM system coherency unit
  980. config HAVE_ARM_TWD
  981. bool
  982. depends on SMP
  983. help
  984. This options enables support for the ARM timer and watchdog unit
  985. choice
  986. prompt "Memory split"
  987. default VMSPLIT_3G
  988. help
  989. Select the desired split between kernel and user memory.
  990. If you are not absolutely sure what you are doing, leave this
  991. option alone!
  992. config VMSPLIT_3G
  993. bool "3G/1G user/kernel split"
  994. config VMSPLIT_2G
  995. bool "2G/2G user/kernel split"
  996. config VMSPLIT_1G
  997. bool "1G/3G user/kernel split"
  998. endchoice
  999. config PAGE_OFFSET
  1000. hex
  1001. default 0x40000000 if VMSPLIT_1G
  1002. default 0x80000000 if VMSPLIT_2G
  1003. default 0xC0000000
  1004. config NR_CPUS
  1005. int "Maximum number of CPUs (2-32)"
  1006. range 2 32
  1007. depends on SMP
  1008. default "4"
  1009. config HOTPLUG_CPU
  1010. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  1011. depends on SMP && HOTPLUG && EXPERIMENTAL
  1012. help
  1013. Say Y here to experiment with turning CPUs off and on. CPUs
  1014. can be controlled through /sys/devices/system/cpu.
  1015. config LOCAL_TIMERS
  1016. bool "Use local timer interrupts"
  1017. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
  1018. REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
  1019. default y
  1020. select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
  1021. help
  1022. Enable support for local timers on SMP platforms, rather then the
  1023. legacy IPI broadcast method. Local timers allows the system
  1024. accounting to be spread across the timer interval, preventing a
  1025. "thundering herd" at every timer tick.
  1026. source kernel/Kconfig.preempt
  1027. config HZ
  1028. int
  1029. default 128 if ARCH_L7200
  1030. default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
  1031. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  1032. default AT91_TIMER_HZ if ARCH_AT91
  1033. default 100
  1034. config THUMB2_KERNEL
  1035. bool "Compile the kernel in Thumb-2 mode"
  1036. depends on CPU_V7 && EXPERIMENTAL
  1037. select AEABI
  1038. select ARM_ASM_UNIFIED
  1039. help
  1040. By enabling this option, the kernel will be compiled in
  1041. Thumb-2 mode. A compiler/assembler that understand the unified
  1042. ARM-Thumb syntax is needed.
  1043. If unsure, say N.
  1044. config ARM_ASM_UNIFIED
  1045. bool
  1046. config AEABI
  1047. bool "Use the ARM EABI to compile the kernel"
  1048. help
  1049. This option allows for the kernel to be compiled using the latest
  1050. ARM ABI (aka EABI). This is only useful if you are using a user
  1051. space environment that is also compiled with EABI.
  1052. Since there are major incompatibilities between the legacy ABI and
  1053. EABI, especially with regard to structure member alignment, this
  1054. option also changes the kernel syscall calling convention to
  1055. disambiguate both ABIs and allow for backward compatibility support
  1056. (selected with CONFIG_OABI_COMPAT).
  1057. To use this you need GCC version 4.0.0 or later.
  1058. config OABI_COMPAT
  1059. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  1060. depends on AEABI && EXPERIMENTAL
  1061. default y
  1062. help
  1063. This option preserves the old syscall interface along with the
  1064. new (ARM EABI) one. It also provides a compatibility layer to
  1065. intercept syscalls that have structure arguments which layout
  1066. in memory differs between the legacy ABI and the new ARM EABI
  1067. (only for non "thumb" binaries). This option adds a tiny
  1068. overhead to all syscalls and produces a slightly larger kernel.
  1069. If you know you'll be using only pure EABI user space then you
  1070. can say N here. If this option is not selected and you attempt
  1071. to execute a legacy ABI binary then the result will be
  1072. UNPREDICTABLE (in fact it can be predicted that it won't work
  1073. at all). If in doubt say Y.
  1074. config ARCH_HAS_HOLES_MEMORYMODEL
  1075. bool
  1076. # Discontigmem is deprecated
  1077. config ARCH_DISCONTIGMEM_ENABLE
  1078. bool
  1079. config ARCH_SPARSEMEM_ENABLE
  1080. bool
  1081. config ARCH_SPARSEMEM_DEFAULT
  1082. def_bool ARCH_SPARSEMEM_ENABLE
  1083. config ARCH_SELECT_MEMORY_MODEL
  1084. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  1085. config NODES_SHIFT
  1086. int
  1087. default "4" if ARCH_LH7A40X
  1088. default "2"
  1089. depends on NEED_MULTIPLE_NODES
  1090. config HIGHMEM
  1091. bool "High Memory Support (EXPERIMENTAL)"
  1092. depends on MMU && EXPERIMENTAL
  1093. help
  1094. The address space of ARM processors is only 4 Gigabytes large
  1095. and it has to accommodate user address space, kernel address
  1096. space as well as some memory mapped IO. That means that, if you
  1097. have a large amount of physical memory and/or IO, not all of the
  1098. memory can be "permanently mapped" by the kernel. The physical
  1099. memory that is not permanently mapped is called "high memory".
  1100. Depending on the selected kernel/user memory split, minimum
  1101. vmalloc space and actual amount of RAM, you may not need this
  1102. option which should result in a slightly faster kernel.
  1103. If unsure, say n.
  1104. config HIGHPTE
  1105. bool "Allocate 2nd-level pagetables from highmem"
  1106. depends on HIGHMEM
  1107. depends on !OUTER_CACHE
  1108. config HW_PERF_EVENTS
  1109. bool "Enable hardware performance counter support for perf events"
  1110. depends on PERF_EVENTS && CPU_HAS_PMU && (CPU_V6 || CPU_V7)
  1111. default y
  1112. help
  1113. Enable hardware performance counter support for perf events. If
  1114. disabled, perf events will use software events only.
  1115. source "mm/Kconfig"
  1116. config LEDS
  1117. bool "Timer and CPU usage LEDs"
  1118. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  1119. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  1120. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  1121. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  1122. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  1123. ARCH_AT91 || ARCH_DAVINCI || \
  1124. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  1125. help
  1126. If you say Y here, the LEDs on your machine will be used
  1127. to provide useful information about your current system status.
  1128. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  1129. be able to select which LEDs are active using the options below. If
  1130. you are compiling a kernel for the EBSA-110 or the LART however, the
  1131. red LED will simply flash regularly to indicate that the system is
  1132. still functional. It is safe to say Y here if you have a CATS
  1133. system, but the driver will do nothing.
  1134. config LEDS_TIMER
  1135. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  1136. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1137. || MACH_OMAP_PERSEUS2
  1138. depends on LEDS
  1139. depends on !GENERIC_CLOCKEVENTS
  1140. default y if ARCH_EBSA110
  1141. help
  1142. If you say Y here, one of the system LEDs (the green one on the
  1143. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1144. will flash regularly to indicate that the system is still
  1145. operational. This is mainly useful to kernel hackers who are
  1146. debugging unstable kernels.
  1147. The LART uses the same LED for both Timer LED and CPU usage LED
  1148. functions. You may choose to use both, but the Timer LED function
  1149. will overrule the CPU usage LED.
  1150. config LEDS_CPU
  1151. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1152. !ARCH_OMAP) \
  1153. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1154. || MACH_OMAP_PERSEUS2
  1155. depends on LEDS
  1156. help
  1157. If you say Y here, the red LED will be used to give a good real
  1158. time indication of CPU usage, by lighting whenever the idle task
  1159. is not currently executing.
  1160. The LART uses the same LED for both Timer LED and CPU usage LED
  1161. functions. You may choose to use both, but the Timer LED function
  1162. will overrule the CPU usage LED.
  1163. config ALIGNMENT_TRAP
  1164. bool
  1165. depends on CPU_CP15_MMU
  1166. default y if !ARCH_EBSA110
  1167. select HAVE_PROC_CPU if PROC_FS
  1168. help
  1169. ARM processors cannot fetch/store information which is not
  1170. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1171. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1172. fetch/store instructions will be emulated in software if you say
  1173. here, which has a severe performance impact. This is necessary for
  1174. correct operation of some network protocols. With an IP-only
  1175. configuration it is safe to say N, otherwise say Y.
  1176. config UACCESS_WITH_MEMCPY
  1177. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1178. depends on MMU && EXPERIMENTAL
  1179. default y if CPU_FEROCEON
  1180. help
  1181. Implement faster copy_to_user and clear_user methods for CPU
  1182. cores where a 8-word STM instruction give significantly higher
  1183. memory write throughput than a sequence of individual 32bit stores.
  1184. A possible side effect is a slight increase in scheduling latency
  1185. between threads sharing the same address space if they invoke
  1186. such copy operations with large buffers.
  1187. However, if the CPU data cache is using a write-allocate mode,
  1188. this option is unlikely to provide any performance gain.
  1189. endmenu
  1190. menu "Boot options"
  1191. # Compressed boot loader in ROM. Yes, we really want to ask about
  1192. # TEXT and BSS so we preserve their values in the config files.
  1193. config ZBOOT_ROM_TEXT
  1194. hex "Compressed ROM boot loader base address"
  1195. default "0"
  1196. help
  1197. The physical address at which the ROM-able zImage is to be
  1198. placed in the target. Platforms which normally make use of
  1199. ROM-able zImage formats normally set this to a suitable
  1200. value in their defconfig file.
  1201. If ZBOOT_ROM is not enabled, this has no effect.
  1202. config ZBOOT_ROM_BSS
  1203. hex "Compressed ROM boot loader BSS address"
  1204. default "0"
  1205. help
  1206. The base address of an area of read/write memory in the target
  1207. for the ROM-able zImage which must be available while the
  1208. decompressor is running. It must be large enough to hold the
  1209. entire decompressed kernel plus an additional 128 KiB.
  1210. Platforms which normally make use of ROM-able zImage formats
  1211. normally set this to a suitable value in their defconfig file.
  1212. If ZBOOT_ROM is not enabled, this has no effect.
  1213. config ZBOOT_ROM
  1214. bool "Compressed boot loader in ROM/flash"
  1215. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1216. help
  1217. Say Y here if you intend to execute your compressed kernel image
  1218. (zImage) directly from ROM or flash. If unsure, say N.
  1219. config CMDLINE
  1220. string "Default kernel command string"
  1221. default ""
  1222. help
  1223. On some architectures (EBSA110 and CATS), there is currently no way
  1224. for the boot loader to pass arguments to the kernel. For these
  1225. architectures, you should supply some command-line options at build
  1226. time by entering them here. As a minimum, you should specify the
  1227. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1228. config XIP_KERNEL
  1229. bool "Kernel Execute-In-Place from ROM"
  1230. depends on !ZBOOT_ROM
  1231. help
  1232. Execute-In-Place allows the kernel to run from non-volatile storage
  1233. directly addressable by the CPU, such as NOR flash. This saves RAM
  1234. space since the text section of the kernel is not loaded from flash
  1235. to RAM. Read-write sections, such as the data section and stack,
  1236. are still copied to RAM. The XIP kernel is not compressed since
  1237. it has to run directly from flash, so it will take more space to
  1238. store it. The flash address used to link the kernel object files,
  1239. and for storing it, is configuration dependent. Therefore, if you
  1240. say Y here, you must know the proper physical address where to
  1241. store the kernel image depending on your own flash memory usage.
  1242. Also note that the make target becomes "make xipImage" rather than
  1243. "make zImage" or "make Image". The final kernel binary to put in
  1244. ROM memory will be arch/arm/boot/xipImage.
  1245. If unsure, say N.
  1246. config XIP_PHYS_ADDR
  1247. hex "XIP Kernel Physical Location"
  1248. depends on XIP_KERNEL
  1249. default "0x00080000"
  1250. help
  1251. This is the physical address in your flash memory the kernel will
  1252. be linked for and stored to. This address is dependent on your
  1253. own flash usage.
  1254. config KEXEC
  1255. bool "Kexec system call (EXPERIMENTAL)"
  1256. depends on EXPERIMENTAL
  1257. help
  1258. kexec is a system call that implements the ability to shutdown your
  1259. current kernel, and to start another kernel. It is like a reboot
  1260. but it is independent of the system firmware. And like a reboot
  1261. you can start any kernel with it, not just Linux.
  1262. It is an ongoing process to be certain the hardware in a machine
  1263. is properly shutdown, so do not be surprised if this code does not
  1264. initially work for you. It may help to enable device hotplugging
  1265. support.
  1266. config ATAGS_PROC
  1267. bool "Export atags in procfs"
  1268. depends on KEXEC
  1269. default y
  1270. help
  1271. Should the atags used to boot the kernel be exported in an "atags"
  1272. file in procfs. Useful with kexec.
  1273. endmenu
  1274. menu "CPU Power Management"
  1275. if ARCH_HAS_CPUFREQ
  1276. source "drivers/cpufreq/Kconfig"
  1277. config CPU_FREQ_SA1100
  1278. bool
  1279. config CPU_FREQ_SA1110
  1280. bool
  1281. config CPU_FREQ_INTEGRATOR
  1282. tristate "CPUfreq driver for ARM Integrator CPUs"
  1283. depends on ARCH_INTEGRATOR && CPU_FREQ
  1284. default y
  1285. help
  1286. This enables the CPUfreq driver for ARM Integrator CPUs.
  1287. For details, take a look at <file:Documentation/cpu-freq>.
  1288. If in doubt, say Y.
  1289. config CPU_FREQ_PXA
  1290. bool
  1291. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1292. default y
  1293. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1294. config CPU_FREQ_S3C64XX
  1295. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1296. depends on CPU_FREQ && CPU_S3C6410
  1297. config CPU_FREQ_S3C
  1298. bool
  1299. help
  1300. Internal configuration node for common cpufreq on Samsung SoC
  1301. config CPU_FREQ_S3C24XX
  1302. bool "CPUfreq driver for Samsung S3C24XX series CPUs"
  1303. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1304. select CPU_FREQ_S3C
  1305. help
  1306. This enables the CPUfreq driver for the Samsung S3C24XX family
  1307. of CPUs.
  1308. For details, take a look at <file:Documentation/cpu-freq>.
  1309. If in doubt, say N.
  1310. config CPU_FREQ_S3C24XX_PLL
  1311. bool "Support CPUfreq changing of PLL frequency"
  1312. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1313. help
  1314. Compile in support for changing the PLL frequency from the
  1315. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1316. after a frequency change, so by default it is not enabled.
  1317. This also means that the PLL tables for the selected CPU(s) will
  1318. be built which may increase the size of the kernel image.
  1319. config CPU_FREQ_S3C24XX_DEBUG
  1320. bool "Debug CPUfreq Samsung driver core"
  1321. depends on CPU_FREQ_S3C24XX
  1322. help
  1323. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1324. config CPU_FREQ_S3C24XX_IODEBUG
  1325. bool "Debug CPUfreq Samsung driver IO timing"
  1326. depends on CPU_FREQ_S3C24XX
  1327. help
  1328. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1329. config CPU_FREQ_S3C24XX_DEBUGFS
  1330. bool "Export debugfs for CPUFreq"
  1331. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1332. help
  1333. Export status information via debugfs.
  1334. endif
  1335. source "drivers/cpuidle/Kconfig"
  1336. endmenu
  1337. menu "Floating point emulation"
  1338. comment "At least one emulation must be selected"
  1339. config FPE_NWFPE
  1340. bool "NWFPE math emulation"
  1341. depends on !AEABI || OABI_COMPAT
  1342. ---help---
  1343. Say Y to include the NWFPE floating point emulator in the kernel.
  1344. This is necessary to run most binaries. Linux does not currently
  1345. support floating point hardware so you need to say Y here even if
  1346. your machine has an FPA or floating point co-processor podule.
  1347. You may say N here if you are going to load the Acorn FPEmulator
  1348. early in the bootup.
  1349. config FPE_NWFPE_XP
  1350. bool "Support extended precision"
  1351. depends on FPE_NWFPE
  1352. help
  1353. Say Y to include 80-bit support in the kernel floating-point
  1354. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1355. Note that gcc does not generate 80-bit operations by default,
  1356. so in most cases this option only enlarges the size of the
  1357. floating point emulator without any good reason.
  1358. You almost surely want to say N here.
  1359. config FPE_FASTFPE
  1360. bool "FastFPE math emulation (EXPERIMENTAL)"
  1361. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1362. ---help---
  1363. Say Y here to include the FAST floating point emulator in the kernel.
  1364. This is an experimental much faster emulator which now also has full
  1365. precision for the mantissa. It does not support any exceptions.
  1366. It is very simple, and approximately 3-6 times faster than NWFPE.
  1367. It should be sufficient for most programs. It may be not suitable
  1368. for scientific calculations, but you have to check this for yourself.
  1369. If you do not feel you need a faster FP emulation you should better
  1370. choose NWFPE.
  1371. config VFP
  1372. bool "VFP-format floating point maths"
  1373. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1374. help
  1375. Say Y to include VFP support code in the kernel. This is needed
  1376. if your hardware includes a VFP unit.
  1377. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1378. release notes and additional status information.
  1379. Say N if your target does not have VFP hardware.
  1380. config VFPv3
  1381. bool
  1382. depends on VFP
  1383. default y if CPU_V7
  1384. config NEON
  1385. bool "Advanced SIMD (NEON) Extension support"
  1386. depends on VFPv3 && CPU_V7
  1387. help
  1388. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1389. Extension.
  1390. endmenu
  1391. menu "Userspace binary formats"
  1392. source "fs/Kconfig.binfmt"
  1393. config ARTHUR
  1394. tristate "RISC OS personality"
  1395. depends on !AEABI
  1396. help
  1397. Say Y here to include the kernel code necessary if you want to run
  1398. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1399. experimental; if this sounds frightening, say N and sleep in peace.
  1400. You can also say M here to compile this support as a module (which
  1401. will be called arthur).
  1402. endmenu
  1403. menu "Power management options"
  1404. source "kernel/power/Kconfig"
  1405. config ARCH_SUSPEND_POSSIBLE
  1406. def_bool y
  1407. endmenu
  1408. source "net/Kconfig"
  1409. source "drivers/Kconfig"
  1410. source "fs/Kconfig"
  1411. source "arch/arm/Kconfig.debug"
  1412. source "security/Kconfig"
  1413. source "crypto/Kconfig"
  1414. source "lib/Kconfig"