Kconfig 49 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 HAVE_MEMBLOCK
  12. select RTC_LIB
  13. select SYS_SUPPORTS_APM_EMULATION
  14. select GENERIC_ATOMIC64 if (!CPU_32v6K)
  15. select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
  16. select HAVE_ARCH_KGDB
  17. select HAVE_KPROBES if (!XIP_KERNEL)
  18. select HAVE_KRETPROBES if (HAVE_KPROBES)
  19. select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  20. select HAVE_GENERIC_DMA_COHERENT
  21. select HAVE_KERNEL_GZIP
  22. select HAVE_KERNEL_LZO
  23. select HAVE_KERNEL_LZMA
  24. select HAVE_PERF_EVENTS
  25. select PERF_USE_VMALLOC
  26. select HAVE_REGS_AND_STACK_ACCESS_API
  27. help
  28. The ARM series is a line of low-power-consumption RISC chip designs
  29. licensed by ARM Ltd and targeted at embedded applications and
  30. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  31. manufactured, but legacy ARM-based PC hardware remains popular in
  32. Europe. There is an ARM Linux project with a web page at
  33. <http://www.arm.linux.org.uk/>.
  34. config HAVE_PWM
  35. bool
  36. config SYS_SUPPORTS_APM_EMULATION
  37. bool
  38. config GENERIC_GPIO
  39. bool
  40. config GENERIC_TIME
  41. bool
  42. default y
  43. config ARCH_USES_GETTIMEOFFSET
  44. bool
  45. default n
  46. config GENERIC_CLOCKEVENTS
  47. bool
  48. config GENERIC_CLOCKEVENTS_BROADCAST
  49. bool
  50. depends on GENERIC_CLOCKEVENTS
  51. default y if SMP
  52. config HAVE_TCM
  53. bool
  54. select GENERIC_ALLOCATOR
  55. config HAVE_PROC_CPU
  56. bool
  57. config NO_IOPORT
  58. bool
  59. config EISA
  60. bool
  61. ---help---
  62. The Extended Industry Standard Architecture (EISA) bus was
  63. developed as an open alternative to the IBM MicroChannel bus.
  64. The EISA bus provided some of the features of the IBM MicroChannel
  65. bus while maintaining backward compatibility with cards made for
  66. the older ISA bus. The EISA bus saw limited use between 1988 and
  67. 1995 when it was made obsolete by the PCI bus.
  68. Say Y here if you are building a kernel for an EISA-based machine.
  69. Otherwise, say N.
  70. config SBUS
  71. bool
  72. config MCA
  73. bool
  74. help
  75. MicroChannel Architecture is found in some IBM PS/2 machines and
  76. laptops. It is a bus system similar to PCI or ISA. See
  77. <file:Documentation/mca.txt> (and especially the web page given
  78. there) before attempting to build an MCA bus kernel.
  79. config GENERIC_HARDIRQS
  80. bool
  81. default y
  82. config STACKTRACE_SUPPORT
  83. bool
  84. default y
  85. config HAVE_LATENCYTOP_SUPPORT
  86. bool
  87. depends on !SMP
  88. default y
  89. config LOCKDEP_SUPPORT
  90. bool
  91. default y
  92. config TRACE_IRQFLAGS_SUPPORT
  93. bool
  94. default y
  95. config HARDIRQS_SW_RESEND
  96. bool
  97. default y
  98. config GENERIC_IRQ_PROBE
  99. bool
  100. default y
  101. config GENERIC_LOCKBREAK
  102. bool
  103. default y
  104. depends on SMP && PREEMPT
  105. config RWSEM_GENERIC_SPINLOCK
  106. bool
  107. default y
  108. config RWSEM_XCHGADD_ALGORITHM
  109. bool
  110. config ARCH_HAS_ILOG2_U32
  111. bool
  112. config ARCH_HAS_ILOG2_U64
  113. bool
  114. config ARCH_HAS_CPUFREQ
  115. bool
  116. help
  117. Internal node to signify that the ARCH has CPUFREQ support
  118. and that the relevant menu configurations are displayed for
  119. it.
  120. config GENERIC_HWEIGHT
  121. bool
  122. default y
  123. config GENERIC_CALIBRATE_DELAY
  124. bool
  125. default y
  126. config ARCH_MAY_HAVE_PC_FDC
  127. bool
  128. config ZONE_DMA
  129. bool
  130. config NEED_DMA_MAP_STATE
  131. def_bool y
  132. config GENERIC_ISA_DMA
  133. bool
  134. config FIQ
  135. bool
  136. config ARCH_MTD_XIP
  137. bool
  138. config GENERIC_HARDIRQS_NO__DO_IRQ
  139. def_bool y
  140. config ARM_L1_CACHE_SHIFT_6
  141. bool
  142. help
  143. Setting ARM L1 cache line size to 64 Bytes.
  144. config VECTORS_BASE
  145. hex
  146. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  147. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  148. default 0x00000000
  149. help
  150. The base address of exception vectors.
  151. source "init/Kconfig"
  152. source "kernel/Kconfig.freezer"
  153. menu "System Type"
  154. config MMU
  155. bool "MMU-based Paged Memory Management Support"
  156. default y
  157. help
  158. Select if you want MMU-based virtualised addressing space
  159. support by paged memory management. If unsure, say 'Y'.
  160. #
  161. # The "ARM system type" choice list is ordered alphabetically by option
  162. # text. Please add new entries in the option alphabetic order.
  163. #
  164. choice
  165. prompt "ARM system type"
  166. default ARCH_VERSATILE
  167. config ARCH_AAEC2000
  168. bool "Agilent AAEC-2000 based"
  169. select CPU_ARM920T
  170. select ARM_AMBA
  171. select HAVE_CLK
  172. select ARCH_USES_GETTIMEOFFSET
  173. help
  174. This enables support for systems based on the Agilent AAEC-2000
  175. config ARCH_INTEGRATOR
  176. bool "ARM Ltd. Integrator family"
  177. select ARM_AMBA
  178. select ARCH_HAS_CPUFREQ
  179. select COMMON_CLKDEV
  180. select ICST
  181. select GENERIC_CLOCKEVENTS
  182. select PLAT_VERSATILE
  183. help
  184. Support for ARM's Integrator platform.
  185. config ARCH_REALVIEW
  186. bool "ARM Ltd. RealView family"
  187. select ARM_AMBA
  188. select COMMON_CLKDEV
  189. select ICST
  190. select GENERIC_CLOCKEVENTS
  191. select ARCH_WANT_OPTIONAL_GPIOLIB
  192. select PLAT_VERSATILE
  193. select ARM_TIMER_SP804
  194. select GPIO_PL061 if GPIOLIB
  195. help
  196. This enables support for ARM Ltd RealView boards.
  197. config ARCH_VERSATILE
  198. bool "ARM Ltd. Versatile family"
  199. select ARM_AMBA
  200. select ARM_VIC
  201. select COMMON_CLKDEV
  202. select ICST
  203. select GENERIC_CLOCKEVENTS
  204. select ARCH_WANT_OPTIONAL_GPIOLIB
  205. select PLAT_VERSATILE
  206. select ARM_TIMER_SP804
  207. help
  208. This enables support for ARM Ltd Versatile board.
  209. config ARCH_VEXPRESS
  210. bool "ARM Ltd. Versatile Express family"
  211. select ARCH_WANT_OPTIONAL_GPIOLIB
  212. select ARM_AMBA
  213. select ARM_TIMER_SP804
  214. select COMMON_CLKDEV
  215. select GENERIC_CLOCKEVENTS
  216. select HAVE_CLK
  217. select ICST
  218. select PLAT_VERSATILE
  219. help
  220. This enables support for the ARM Ltd Versatile Express boards.
  221. config ARCH_AT91
  222. bool "Atmel AT91"
  223. select ARCH_REQUIRE_GPIOLIB
  224. select HAVE_CLK
  225. select ARCH_USES_GETTIMEOFFSET
  226. help
  227. This enables support for systems based on the Atmel AT91RM9200,
  228. AT91SAM9 and AT91CAP9 processors.
  229. config ARCH_BCMRING
  230. bool "Broadcom BCMRING"
  231. depends on MMU
  232. select CPU_V6
  233. select ARM_AMBA
  234. select COMMON_CLKDEV
  235. select GENERIC_CLOCKEVENTS
  236. select ARCH_WANT_OPTIONAL_GPIOLIB
  237. help
  238. Support for Broadcom's BCMRing platform.
  239. config ARCH_CLPS711X
  240. bool "Cirrus Logic CLPS711x/EP721x-based"
  241. select CPU_ARM720T
  242. select ARCH_USES_GETTIMEOFFSET
  243. help
  244. Support for Cirrus Logic 711x/721x based boards.
  245. config ARCH_CNS3XXX
  246. bool "Cavium Networks CNS3XXX family"
  247. select CPU_V6
  248. select GENERIC_CLOCKEVENTS
  249. select ARM_GIC
  250. select PCI_DOMAINS if PCI
  251. help
  252. Support for Cavium Networks CNS3XXX platform.
  253. config ARCH_GEMINI
  254. bool "Cortina Systems Gemini"
  255. select CPU_FA526
  256. select ARCH_REQUIRE_GPIOLIB
  257. select ARCH_USES_GETTIMEOFFSET
  258. help
  259. Support for the Cortina Systems Gemini family SoCs
  260. config ARCH_EBSA110
  261. bool "EBSA-110"
  262. select CPU_SA110
  263. select ISA
  264. select NO_IOPORT
  265. select ARCH_USES_GETTIMEOFFSET
  266. help
  267. This is an evaluation board for the StrongARM processor available
  268. from Digital. It has limited hardware on-board, including an
  269. Ethernet interface, two PCMCIA sockets, two serial ports and a
  270. parallel port.
  271. config ARCH_EP93XX
  272. bool "EP93xx-based"
  273. select CPU_ARM920T
  274. select ARM_AMBA
  275. select ARM_VIC
  276. select COMMON_CLKDEV
  277. select ARCH_REQUIRE_GPIOLIB
  278. select ARCH_HAS_HOLES_MEMORYMODEL
  279. select ARCH_USES_GETTIMEOFFSET
  280. help
  281. This enables support for the Cirrus EP93xx series of CPUs.
  282. config ARCH_FOOTBRIDGE
  283. bool "FootBridge"
  284. select CPU_SA110
  285. select FOOTBRIDGE
  286. select ARCH_USES_GETTIMEOFFSET
  287. help
  288. Support for systems based on the DC21285 companion chip
  289. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  290. config ARCH_MXC
  291. bool "Freescale MXC/iMX-based"
  292. select GENERIC_CLOCKEVENTS
  293. select ARCH_REQUIRE_GPIOLIB
  294. select COMMON_CLKDEV
  295. help
  296. Support for Freescale MXC/iMX-based family of processors
  297. config ARCH_STMP3XXX
  298. bool "Freescale STMP3xxx"
  299. select CPU_ARM926T
  300. select COMMON_CLKDEV
  301. select ARCH_REQUIRE_GPIOLIB
  302. select GENERIC_CLOCKEVENTS
  303. select USB_ARCH_HAS_EHCI
  304. help
  305. Support for systems based on the Freescale 3xxx CPUs.
  306. config ARCH_NETX
  307. bool "Hilscher NetX based"
  308. select CPU_ARM926T
  309. select ARM_VIC
  310. select GENERIC_CLOCKEVENTS
  311. help
  312. This enables support for systems based on the Hilscher NetX Soc
  313. config ARCH_H720X
  314. bool "Hynix HMS720x-based"
  315. select CPU_ARM720T
  316. select ISA_DMA_API
  317. select ARCH_USES_GETTIMEOFFSET
  318. help
  319. This enables support for systems based on the Hynix HMS720x
  320. config ARCH_IOP13XX
  321. bool "IOP13xx-based"
  322. depends on MMU
  323. select CPU_XSC3
  324. select PLAT_IOP
  325. select PCI
  326. select ARCH_SUPPORTS_MSI
  327. select VMSPLIT_1G
  328. help
  329. Support for Intel's IOP13XX (XScale) family of processors.
  330. config ARCH_IOP32X
  331. bool "IOP32x-based"
  332. depends on MMU
  333. select CPU_XSCALE
  334. select PLAT_IOP
  335. select PCI
  336. select ARCH_REQUIRE_GPIOLIB
  337. help
  338. Support for Intel's 80219 and IOP32X (XScale) family of
  339. processors.
  340. config ARCH_IOP33X
  341. bool "IOP33x-based"
  342. depends on MMU
  343. select CPU_XSCALE
  344. select PLAT_IOP
  345. select PCI
  346. select ARCH_REQUIRE_GPIOLIB
  347. help
  348. Support for Intel's IOP33X (XScale) family of processors.
  349. config ARCH_IXP23XX
  350. bool "IXP23XX-based"
  351. depends on MMU
  352. select CPU_XSC3
  353. select PCI
  354. select ARCH_USES_GETTIMEOFFSET
  355. help
  356. Support for Intel's IXP23xx (XScale) family of processors.
  357. config ARCH_IXP2000
  358. bool "IXP2400/2800-based"
  359. depends on MMU
  360. select CPU_XSCALE
  361. select PCI
  362. select ARCH_USES_GETTIMEOFFSET
  363. help
  364. Support for Intel's IXP2400/2800 (XScale) family of processors.
  365. config ARCH_IXP4XX
  366. bool "IXP4xx-based"
  367. depends on MMU
  368. select CPU_XSCALE
  369. select GENERIC_GPIO
  370. select GENERIC_CLOCKEVENTS
  371. select DMABOUNCE if PCI
  372. help
  373. Support for Intel's IXP4XX (XScale) family of processors.
  374. config ARCH_DOVE
  375. bool "Marvell Dove"
  376. select PCI
  377. select ARCH_REQUIRE_GPIOLIB
  378. select GENERIC_CLOCKEVENTS
  379. select PLAT_ORION
  380. help
  381. Support for the Marvell Dove SoC 88AP510
  382. config ARCH_KIRKWOOD
  383. bool "Marvell Kirkwood"
  384. select CPU_FEROCEON
  385. select PCI
  386. select ARCH_REQUIRE_GPIOLIB
  387. select GENERIC_CLOCKEVENTS
  388. select PLAT_ORION
  389. help
  390. Support for the following Marvell Kirkwood series SoCs:
  391. 88F6180, 88F6192 and 88F6281.
  392. config ARCH_LOKI
  393. bool "Marvell Loki (88RC8480)"
  394. select CPU_FEROCEON
  395. select GENERIC_CLOCKEVENTS
  396. select PLAT_ORION
  397. help
  398. Support for the Marvell Loki (88RC8480) SoC.
  399. config ARCH_LPC32XX
  400. bool "NXP LPC32XX"
  401. select CPU_ARM926T
  402. select ARCH_REQUIRE_GPIOLIB
  403. select HAVE_IDE
  404. select ARM_AMBA
  405. select USB_ARCH_HAS_OHCI
  406. select COMMON_CLKDEV
  407. select GENERIC_TIME
  408. select GENERIC_CLOCKEVENTS
  409. help
  410. Support for the NXP LPC32XX family of processors
  411. config ARCH_MV78XX0
  412. bool "Marvell MV78xx0"
  413. select CPU_FEROCEON
  414. select PCI
  415. select ARCH_REQUIRE_GPIOLIB
  416. select GENERIC_CLOCKEVENTS
  417. select PLAT_ORION
  418. help
  419. Support for the following Marvell MV78xx0 series SoCs:
  420. MV781x0, MV782x0.
  421. config ARCH_ORION5X
  422. bool "Marvell Orion"
  423. depends on MMU
  424. select CPU_FEROCEON
  425. select PCI
  426. select ARCH_REQUIRE_GPIOLIB
  427. select GENERIC_CLOCKEVENTS
  428. select PLAT_ORION
  429. help
  430. Support for the following Marvell Orion 5x series SoCs:
  431. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  432. Orion-2 (5281), Orion-1-90 (6183).
  433. config ARCH_MMP
  434. bool "Marvell PXA168/910/MMP2"
  435. depends on MMU
  436. select ARCH_REQUIRE_GPIOLIB
  437. select COMMON_CLKDEV
  438. select GENERIC_CLOCKEVENTS
  439. select TICK_ONESHOT
  440. select PLAT_PXA
  441. help
  442. Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
  443. config ARCH_KS8695
  444. bool "Micrel/Kendin KS8695"
  445. select CPU_ARM922T
  446. select ARCH_REQUIRE_GPIOLIB
  447. select ARCH_USES_GETTIMEOFFSET
  448. help
  449. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  450. System-on-Chip devices.
  451. config ARCH_NS9XXX
  452. bool "NetSilicon NS9xxx"
  453. select CPU_ARM926T
  454. select GENERIC_GPIO
  455. select GENERIC_CLOCKEVENTS
  456. select HAVE_CLK
  457. help
  458. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  459. System.
  460. <http://www.digi.com/products/microprocessors/index.jsp>
  461. config ARCH_W90X900
  462. bool "Nuvoton W90X900 CPU"
  463. select CPU_ARM926T
  464. select ARCH_REQUIRE_GPIOLIB
  465. select COMMON_CLKDEV
  466. select GENERIC_CLOCKEVENTS
  467. help
  468. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  469. At present, the w90x900 has been renamed nuc900, regarding
  470. the ARM series product line, you can login the following
  471. link address to know more.
  472. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  473. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  474. config ARCH_NUC93X
  475. bool "Nuvoton NUC93X CPU"
  476. select CPU_ARM926T
  477. select COMMON_CLKDEV
  478. help
  479. Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
  480. low-power and high performance MPEG-4/JPEG multimedia controller chip.
  481. config ARCH_PNX4008
  482. bool "Philips Nexperia PNX4008 Mobile"
  483. select CPU_ARM926T
  484. select COMMON_CLKDEV
  485. select ARCH_USES_GETTIMEOFFSET
  486. help
  487. This enables support for Philips PNX4008 mobile platform.
  488. config ARCH_PXA
  489. bool "PXA2xx/PXA3xx-based"
  490. depends on MMU
  491. select ARCH_MTD_XIP
  492. select ARCH_HAS_CPUFREQ
  493. select COMMON_CLKDEV
  494. select ARCH_REQUIRE_GPIOLIB
  495. select GENERIC_CLOCKEVENTS
  496. select TICK_ONESHOT
  497. select PLAT_PXA
  498. help
  499. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  500. config ARCH_MSM
  501. bool "Qualcomm MSM"
  502. select HAVE_CLK
  503. select GENERIC_CLOCKEVENTS
  504. select ARCH_REQUIRE_GPIOLIB
  505. help
  506. Support for Qualcomm MSM/QSD based systems. This runs on the
  507. apps processor of the MSM/QSD and depends on a shared memory
  508. interface to the modem processor which runs the baseband
  509. stack and controls some vital subsystems
  510. (clock and power control, etc).
  511. config ARCH_SHMOBILE
  512. bool "Renesas SH-Mobile"
  513. help
  514. Support for Renesas's SH-Mobile ARM platforms
  515. config ARCH_RPC
  516. bool "RiscPC"
  517. select ARCH_ACORN
  518. select FIQ
  519. select TIMER_ACORN
  520. select ARCH_MAY_HAVE_PC_FDC
  521. select HAVE_PATA_PLATFORM
  522. select ISA_DMA_API
  523. select NO_IOPORT
  524. select ARCH_SPARSEMEM_ENABLE
  525. select ARCH_USES_GETTIMEOFFSET
  526. help
  527. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  528. CD-ROM interface, serial and parallel port, and the floppy drive.
  529. config ARCH_SA1100
  530. bool "SA1100-based"
  531. select CPU_SA1100
  532. select ISA
  533. select ARCH_SPARSEMEM_ENABLE
  534. select ARCH_MTD_XIP
  535. select ARCH_HAS_CPUFREQ
  536. select CPU_FREQ
  537. select GENERIC_CLOCKEVENTS
  538. select HAVE_CLK
  539. select TICK_ONESHOT
  540. select ARCH_REQUIRE_GPIOLIB
  541. help
  542. Support for StrongARM 11x0 based boards.
  543. config ARCH_S3C2410
  544. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
  545. select GENERIC_GPIO
  546. select ARCH_HAS_CPUFREQ
  547. select HAVE_CLK
  548. select ARCH_USES_GETTIMEOFFSET
  549. select HAVE_S3C2410_I2C
  550. help
  551. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  552. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  553. the Samsung SMDK2410 development board (and derivatives).
  554. Note, the S3C2416 and the S3C2450 are so close that they even share
  555. the same SoC ID code. This means that there is no seperate machine
  556. directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
  557. config ARCH_S3C64XX
  558. bool "Samsung S3C64XX"
  559. select PLAT_SAMSUNG
  560. select CPU_V6
  561. select ARM_VIC
  562. select HAVE_CLK
  563. select NO_IOPORT
  564. select ARCH_USES_GETTIMEOFFSET
  565. select ARCH_HAS_CPUFREQ
  566. select ARCH_REQUIRE_GPIOLIB
  567. select SAMSUNG_CLKSRC
  568. select SAMSUNG_IRQ_VIC_TIMER
  569. select SAMSUNG_IRQ_UART
  570. select S3C_GPIO_TRACK
  571. select S3C_GPIO_PULL_UPDOWN
  572. select S3C_GPIO_CFG_S3C24XX
  573. select S3C_GPIO_CFG_S3C64XX
  574. select S3C_DEV_NAND
  575. select USB_ARCH_HAS_OHCI
  576. select SAMSUNG_GPIOLIB_4BIT
  577. select HAVE_S3C2410_I2C
  578. select HAVE_S3C2410_WATCHDOG
  579. help
  580. Samsung S3C64XX series based systems
  581. config ARCH_S5P6440
  582. bool "Samsung S5P6440"
  583. select CPU_V6
  584. select GENERIC_GPIO
  585. select HAVE_CLK
  586. select HAVE_S3C2410_WATCHDOG
  587. select ARCH_USES_GETTIMEOFFSET
  588. select HAVE_S3C2410_I2C
  589. select HAVE_S3C_RTC
  590. help
  591. Samsung S5P6440 CPU based systems
  592. config ARCH_S5P6442
  593. bool "Samsung S5P6442"
  594. select CPU_V6
  595. select GENERIC_GPIO
  596. select HAVE_CLK
  597. select ARCH_USES_GETTIMEOFFSET
  598. select HAVE_S3C2410_WATCHDOG
  599. help
  600. Samsung S5P6442 CPU based systems
  601. config ARCH_S5PC100
  602. bool "Samsung S5PC100"
  603. select GENERIC_GPIO
  604. select HAVE_CLK
  605. select CPU_V7
  606. select ARM_L1_CACHE_SHIFT_6
  607. select ARCH_USES_GETTIMEOFFSET
  608. select HAVE_S3C2410_I2C
  609. select HAVE_S3C_RTC
  610. select HAVE_S3C2410_WATCHDOG
  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. select HAVE_S3C2410_I2C
  621. select HAVE_S3C_RTC
  622. select HAVE_S3C2410_WATCHDOG
  623. help
  624. Samsung S5PV210/S5PC110 series based systems
  625. config ARCH_S5PV310
  626. bool "Samsung S5PV310/S5PC210"
  627. select CPU_V7
  628. select GENERIC_GPIO
  629. select HAVE_CLK
  630. select GENERIC_CLOCKEVENTS
  631. help
  632. Samsung S5PV310 series based systems
  633. config ARCH_SHARK
  634. bool "Shark"
  635. select CPU_SA110
  636. select ISA
  637. select ISA_DMA
  638. select ZONE_DMA
  639. select PCI
  640. select ARCH_USES_GETTIMEOFFSET
  641. help
  642. Support for the StrongARM based Digital DNARD machine, also known
  643. as "Shark" (<http://www.shark-linux.de/shark.html>).
  644. config ARCH_LH7A40X
  645. bool "Sharp LH7A40X"
  646. select CPU_ARM922T
  647. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  648. select ARCH_USES_GETTIMEOFFSET
  649. help
  650. Say Y here for systems based on one of the Sharp LH7A40X
  651. System on a Chip processors. These CPUs include an ARM922T
  652. core with a wide array of integrated devices for
  653. hand-held and low-power applications.
  654. config ARCH_U300
  655. bool "ST-Ericsson U300 Series"
  656. depends on MMU
  657. select CPU_ARM926T
  658. select HAVE_TCM
  659. select ARM_AMBA
  660. select ARM_VIC
  661. select GENERIC_CLOCKEVENTS
  662. select COMMON_CLKDEV
  663. select GENERIC_GPIO
  664. help
  665. Support for ST-Ericsson U300 series mobile platforms.
  666. config ARCH_U8500
  667. bool "ST-Ericsson U8500 Series"
  668. select CPU_V7
  669. select ARM_AMBA
  670. select GENERIC_CLOCKEVENTS
  671. select COMMON_CLKDEV
  672. select ARCH_REQUIRE_GPIOLIB
  673. help
  674. Support for ST-Ericsson's Ux500 architecture
  675. config ARCH_NOMADIK
  676. bool "STMicroelectronics Nomadik"
  677. select ARM_AMBA
  678. select ARM_VIC
  679. select CPU_ARM926T
  680. select COMMON_CLKDEV
  681. select GENERIC_CLOCKEVENTS
  682. select ARCH_REQUIRE_GPIOLIB
  683. help
  684. Support for the Nomadik platform by ST-Ericsson
  685. config ARCH_DAVINCI
  686. bool "TI DaVinci"
  687. select GENERIC_CLOCKEVENTS
  688. select ARCH_REQUIRE_GPIOLIB
  689. select ZONE_DMA
  690. select HAVE_IDE
  691. select COMMON_CLKDEV
  692. select GENERIC_ALLOCATOR
  693. select ARCH_HAS_HOLES_MEMORYMODEL
  694. help
  695. Support for TI's DaVinci platform.
  696. config ARCH_OMAP
  697. bool "TI OMAP"
  698. select HAVE_CLK
  699. select ARCH_REQUIRE_GPIOLIB
  700. select ARCH_HAS_CPUFREQ
  701. select GENERIC_CLOCKEVENTS
  702. select ARCH_HAS_HOLES_MEMORYMODEL
  703. help
  704. Support for TI's OMAP platform (OMAP1 and OMAP2).
  705. config PLAT_SPEAR
  706. bool "ST SPEAr"
  707. select ARM_AMBA
  708. select ARCH_REQUIRE_GPIOLIB
  709. select COMMON_CLKDEV
  710. select GENERIC_CLOCKEVENTS
  711. select HAVE_CLK
  712. help
  713. Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
  714. endchoice
  715. #
  716. # This is sorted alphabetically by mach-* pathname. However, plat-*
  717. # Kconfigs may be included either alphabetically (according to the
  718. # plat- suffix) or along side the corresponding mach-* source.
  719. #
  720. source "arch/arm/mach-aaec2000/Kconfig"
  721. source "arch/arm/mach-at91/Kconfig"
  722. source "arch/arm/mach-bcmring/Kconfig"
  723. source "arch/arm/mach-clps711x/Kconfig"
  724. source "arch/arm/mach-cns3xxx/Kconfig"
  725. source "arch/arm/mach-davinci/Kconfig"
  726. source "arch/arm/mach-dove/Kconfig"
  727. source "arch/arm/mach-ep93xx/Kconfig"
  728. source "arch/arm/mach-footbridge/Kconfig"
  729. source "arch/arm/mach-gemini/Kconfig"
  730. source "arch/arm/mach-h720x/Kconfig"
  731. source "arch/arm/mach-integrator/Kconfig"
  732. source "arch/arm/mach-iop32x/Kconfig"
  733. source "arch/arm/mach-iop33x/Kconfig"
  734. source "arch/arm/mach-iop13xx/Kconfig"
  735. source "arch/arm/mach-ixp4xx/Kconfig"
  736. source "arch/arm/mach-ixp2000/Kconfig"
  737. source "arch/arm/mach-ixp23xx/Kconfig"
  738. source "arch/arm/mach-kirkwood/Kconfig"
  739. source "arch/arm/mach-ks8695/Kconfig"
  740. source "arch/arm/mach-lh7a40x/Kconfig"
  741. source "arch/arm/mach-loki/Kconfig"
  742. source "arch/arm/mach-lpc32xx/Kconfig"
  743. source "arch/arm/mach-msm/Kconfig"
  744. source "arch/arm/mach-mv78xx0/Kconfig"
  745. source "arch/arm/plat-mxc/Kconfig"
  746. source "arch/arm/mach-netx/Kconfig"
  747. source "arch/arm/mach-nomadik/Kconfig"
  748. source "arch/arm/plat-nomadik/Kconfig"
  749. source "arch/arm/mach-ns9xxx/Kconfig"
  750. source "arch/arm/mach-nuc93x/Kconfig"
  751. source "arch/arm/plat-omap/Kconfig"
  752. source "arch/arm/mach-omap1/Kconfig"
  753. source "arch/arm/mach-omap2/Kconfig"
  754. source "arch/arm/mach-orion5x/Kconfig"
  755. source "arch/arm/mach-pxa/Kconfig"
  756. source "arch/arm/plat-pxa/Kconfig"
  757. source "arch/arm/mach-mmp/Kconfig"
  758. source "arch/arm/mach-realview/Kconfig"
  759. source "arch/arm/mach-sa1100/Kconfig"
  760. source "arch/arm/plat-samsung/Kconfig"
  761. source "arch/arm/plat-s3c24xx/Kconfig"
  762. source "arch/arm/plat-s5p/Kconfig"
  763. source "arch/arm/plat-spear/Kconfig"
  764. if ARCH_S3C2410
  765. source "arch/arm/mach-s3c2400/Kconfig"
  766. source "arch/arm/mach-s3c2410/Kconfig"
  767. source "arch/arm/mach-s3c2412/Kconfig"
  768. source "arch/arm/mach-s3c2416/Kconfig"
  769. source "arch/arm/mach-s3c2440/Kconfig"
  770. source "arch/arm/mach-s3c2443/Kconfig"
  771. endif
  772. if ARCH_S3C64XX
  773. source "arch/arm/mach-s3c64xx/Kconfig"
  774. endif
  775. source "arch/arm/mach-s5p6440/Kconfig"
  776. source "arch/arm/mach-s5p6442/Kconfig"
  777. source "arch/arm/mach-s5pc100/Kconfig"
  778. source "arch/arm/mach-s5pv210/Kconfig"
  779. source "arch/arm/mach-s5pv310/Kconfig"
  780. source "arch/arm/mach-shmobile/Kconfig"
  781. source "arch/arm/plat-stmp3xxx/Kconfig"
  782. source "arch/arm/mach-u300/Kconfig"
  783. source "arch/arm/mach-ux500/Kconfig"
  784. source "arch/arm/mach-versatile/Kconfig"
  785. source "arch/arm/mach-vexpress/Kconfig"
  786. source "arch/arm/mach-w90x900/Kconfig"
  787. # Definitions to make life easier
  788. config ARCH_ACORN
  789. bool
  790. config PLAT_IOP
  791. bool
  792. select GENERIC_CLOCKEVENTS
  793. config PLAT_ORION
  794. bool
  795. config PLAT_PXA
  796. bool
  797. config PLAT_VERSATILE
  798. bool
  799. config ARM_TIMER_SP804
  800. bool
  801. source arch/arm/mm/Kconfig
  802. config IWMMXT
  803. bool "Enable iWMMXt support"
  804. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
  805. default y if PXA27x || PXA3xx || ARCH_MMP
  806. help
  807. Enable support for iWMMXt context switching at run time if
  808. running on a CPU that supports it.
  809. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  810. config XSCALE_PMU
  811. bool
  812. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  813. default y
  814. config CPU_HAS_PMU
  815. depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
  816. (!ARCH_OMAP3 || OMAP3_EMU)
  817. default y
  818. bool
  819. if !MMU
  820. source "arch/arm/Kconfig-nommu"
  821. endif
  822. config ARM_ERRATA_411920
  823. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  824. depends on CPU_V6 && !SMP
  825. help
  826. Invalidation of the Instruction Cache operation can
  827. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  828. It does not affect the MPCore. This option enables the ARM Ltd.
  829. recommended workaround.
  830. config ARM_ERRATA_430973
  831. bool "ARM errata: Stale prediction on replaced interworking branch"
  832. depends on CPU_V7
  833. help
  834. This option enables the workaround for the 430973 Cortex-A8
  835. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  836. interworking branch is replaced with another code sequence at the
  837. same virtual address, whether due to self-modifying code or virtual
  838. to physical address re-mapping, Cortex-A8 does not recover from the
  839. stale interworking branch prediction. This results in Cortex-A8
  840. executing the new code sequence in the incorrect ARM or Thumb state.
  841. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  842. and also flushes the branch target cache at every context switch.
  843. Note that setting specific bits in the ACTLR register may not be
  844. available in non-secure mode.
  845. config ARM_ERRATA_458693
  846. bool "ARM errata: Processor deadlock when a false hazard is created"
  847. depends on CPU_V7
  848. help
  849. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  850. erratum. For very specific sequences of memory operations, it is
  851. possible for a hazard condition intended for a cache line to instead
  852. be incorrectly associated with a different cache line. This false
  853. hazard might then cause a processor deadlock. The workaround enables
  854. the L1 caching of the NEON accesses and disables the PLD instruction
  855. in the ACTLR register. Note that setting specific bits in the ACTLR
  856. register may not be available in non-secure mode.
  857. config ARM_ERRATA_460075
  858. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  859. depends on CPU_V7
  860. help
  861. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  862. erratum. Any asynchronous access to the L2 cache may encounter a
  863. situation in which recent store transactions to the L2 cache are lost
  864. and overwritten with stale memory contents from external memory. The
  865. workaround disables the write-allocate mode for the L2 cache via the
  866. ACTLR register. Note that setting specific bits in the ACTLR register
  867. may not be available in non-secure mode.
  868. config PL310_ERRATA_588369
  869. bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
  870. depends on CACHE_L2X0 && ARCH_OMAP4
  871. help
  872. The PL310 L2 cache controller implements three types of Clean &
  873. Invalidate maintenance operations: by Physical Address
  874. (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
  875. They are architecturally defined to behave as the execution of a
  876. clean operation followed immediately by an invalidate operation,
  877. both performing to the same memory location. This functionality
  878. is not correctly implemented in PL310 as clean lines are not
  879. invalidated as a result of these operations. Note that this errata
  880. uses Texas Instrument's secure monitor api.
  881. endmenu
  882. source "arch/arm/common/Kconfig"
  883. menu "Bus support"
  884. config ARM_AMBA
  885. bool
  886. config ISA
  887. bool
  888. help
  889. Find out whether you have ISA slots on your motherboard. ISA is the
  890. name of a bus system, i.e. the way the CPU talks to the other stuff
  891. inside your box. Other bus systems are PCI, EISA, MicroChannel
  892. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  893. newer boards don't support it. If you have ISA, say Y, otherwise N.
  894. # Select ISA DMA controller support
  895. config ISA_DMA
  896. bool
  897. select ISA_DMA_API
  898. # Select ISA DMA interface
  899. config ISA_DMA_API
  900. bool
  901. config PCI
  902. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX
  903. help
  904. Find out whether you have a PCI motherboard. PCI is the name of a
  905. bus system, i.e. the way the CPU talks to the other stuff inside
  906. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  907. VESA. If you have PCI, say Y, otherwise N.
  908. config PCI_DOMAINS
  909. bool
  910. depends on PCI
  911. config PCI_SYSCALL
  912. def_bool PCI
  913. # Select the host bridge type
  914. config PCI_HOST_VIA82C505
  915. bool
  916. depends on PCI && ARCH_SHARK
  917. default y
  918. config PCI_HOST_ITE8152
  919. bool
  920. depends on PCI && MACH_ARMCORE
  921. default y
  922. select DMABOUNCE
  923. source "drivers/pci/Kconfig"
  924. source "drivers/pcmcia/Kconfig"
  925. endmenu
  926. menu "Kernel Features"
  927. source "kernel/time/Kconfig"
  928. config SMP
  929. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  930. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
  931. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
  932. ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || ARCH_S5PV310)
  933. depends on GENERIC_CLOCKEVENTS
  934. select USE_GENERIC_SMP_HELPERS
  935. select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 ||\
  936. ARCH_S5PV310)
  937. help
  938. This enables support for systems with more than one CPU. If you have
  939. a system with only one CPU, like most personal computers, say N. If
  940. you have a system with more than one CPU, say Y.
  941. If you say N here, the kernel will run on single and multiprocessor
  942. machines, but will use only one CPU of a multiprocessor machine. If
  943. you say Y here, the kernel will run on many, but not all, single
  944. processor machines. On a single processor machine, the kernel will
  945. run faster if you say N here.
  946. See also <file:Documentation/i386/IO-APIC.txt>,
  947. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  948. <http://www.linuxdoc.org/docs.html#howto>.
  949. If you don't know what to do here, say N.
  950. config HAVE_ARM_SCU
  951. bool
  952. depends on SMP
  953. help
  954. This option enables support for the ARM system coherency unit
  955. config HAVE_ARM_TWD
  956. bool
  957. depends on SMP
  958. help
  959. This options enables support for the ARM timer and watchdog unit
  960. choice
  961. prompt "Memory split"
  962. default VMSPLIT_3G
  963. help
  964. Select the desired split between kernel and user memory.
  965. If you are not absolutely sure what you are doing, leave this
  966. option alone!
  967. config VMSPLIT_3G
  968. bool "3G/1G user/kernel split"
  969. config VMSPLIT_2G
  970. bool "2G/2G user/kernel split"
  971. config VMSPLIT_1G
  972. bool "1G/3G user/kernel split"
  973. endchoice
  974. config PAGE_OFFSET
  975. hex
  976. default 0x40000000 if VMSPLIT_1G
  977. default 0x80000000 if VMSPLIT_2G
  978. default 0xC0000000
  979. config NR_CPUS
  980. int "Maximum number of CPUs (2-32)"
  981. range 2 32
  982. depends on SMP
  983. default "4"
  984. config HOTPLUG_CPU
  985. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  986. depends on SMP && HOTPLUG && EXPERIMENTAL
  987. help
  988. Say Y here to experiment with turning CPUs off and on. CPUs
  989. can be controlled through /sys/devices/system/cpu.
  990. config LOCAL_TIMERS
  991. bool "Use local timer interrupts"
  992. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
  993. REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
  994. ARCH_S5PV310 || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
  995. select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_S5PV310 || \
  996. ARCH_U8500 || ARCH_VEXPRESS)
  997. help
  998. Enable support for local timers on SMP platforms, rather then the
  999. legacy IPI broadcast method. Local timers allows the system
  1000. accounting to be spread across the timer interval, preventing a
  1001. "thundering herd" at every timer tick.
  1002. source kernel/Kconfig.preempt
  1003. config HZ
  1004. int
  1005. default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || \
  1006. ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
  1007. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  1008. default AT91_TIMER_HZ if ARCH_AT91
  1009. default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
  1010. default 100
  1011. config THUMB2_KERNEL
  1012. bool "Compile the kernel in Thumb-2 mode"
  1013. depends on CPU_V7 && EXPERIMENTAL
  1014. select AEABI
  1015. select ARM_ASM_UNIFIED
  1016. help
  1017. By enabling this option, the kernel will be compiled in
  1018. Thumb-2 mode. A compiler/assembler that understand the unified
  1019. ARM-Thumb syntax is needed.
  1020. If unsure, say N.
  1021. config ARM_ASM_UNIFIED
  1022. bool
  1023. config AEABI
  1024. bool "Use the ARM EABI to compile the kernel"
  1025. help
  1026. This option allows for the kernel to be compiled using the latest
  1027. ARM ABI (aka EABI). This is only useful if you are using a user
  1028. space environment that is also compiled with EABI.
  1029. Since there are major incompatibilities between the legacy ABI and
  1030. EABI, especially with regard to structure member alignment, this
  1031. option also changes the kernel syscall calling convention to
  1032. disambiguate both ABIs and allow for backward compatibility support
  1033. (selected with CONFIG_OABI_COMPAT).
  1034. To use this you need GCC version 4.0.0 or later.
  1035. config OABI_COMPAT
  1036. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  1037. depends on AEABI && EXPERIMENTAL
  1038. default y
  1039. help
  1040. This option preserves the old syscall interface along with the
  1041. new (ARM EABI) one. It also provides a compatibility layer to
  1042. intercept syscalls that have structure arguments which layout
  1043. in memory differs between the legacy ABI and the new ARM EABI
  1044. (only for non "thumb" binaries). This option adds a tiny
  1045. overhead to all syscalls and produces a slightly larger kernel.
  1046. If you know you'll be using only pure EABI user space then you
  1047. can say N here. If this option is not selected and you attempt
  1048. to execute a legacy ABI binary then the result will be
  1049. UNPREDICTABLE (in fact it can be predicted that it won't work
  1050. at all). If in doubt say Y.
  1051. config ARCH_HAS_HOLES_MEMORYMODEL
  1052. bool
  1053. config ARCH_SPARSEMEM_ENABLE
  1054. bool
  1055. config ARCH_SPARSEMEM_DEFAULT
  1056. def_bool ARCH_SPARSEMEM_ENABLE
  1057. config ARCH_SELECT_MEMORY_MODEL
  1058. def_bool ARCH_SPARSEMEM_ENABLE
  1059. config HIGHMEM
  1060. bool "High Memory Support (EXPERIMENTAL)"
  1061. depends on MMU && EXPERIMENTAL
  1062. help
  1063. The address space of ARM processors is only 4 Gigabytes large
  1064. and it has to accommodate user address space, kernel address
  1065. space as well as some memory mapped IO. That means that, if you
  1066. have a large amount of physical memory and/or IO, not all of the
  1067. memory can be "permanently mapped" by the kernel. The physical
  1068. memory that is not permanently mapped is called "high memory".
  1069. Depending on the selected kernel/user memory split, minimum
  1070. vmalloc space and actual amount of RAM, you may not need this
  1071. option which should result in a slightly faster kernel.
  1072. If unsure, say n.
  1073. config HIGHPTE
  1074. bool "Allocate 2nd-level pagetables from highmem"
  1075. depends on HIGHMEM
  1076. depends on !OUTER_CACHE
  1077. config HW_PERF_EVENTS
  1078. bool "Enable hardware performance counter support for perf events"
  1079. depends on PERF_EVENTS && CPU_HAS_PMU
  1080. default y
  1081. help
  1082. Enable hardware performance counter support for perf events. If
  1083. disabled, perf events will use software events only.
  1084. config SPARSE_IRQ
  1085. def_bool n
  1086. help
  1087. This enables support for sparse irqs. This is useful in general
  1088. as most CPUs have a fairly sparse array of IRQ vectors, which
  1089. the irq_desc then maps directly on to. Systems with a high
  1090. number of off-chip IRQs will want to treat this as
  1091. experimental until they have been independently verified.
  1092. source "mm/Kconfig"
  1093. config FORCE_MAX_ZONEORDER
  1094. int "Maximum zone order" if ARCH_SHMOBILE
  1095. range 11 64 if ARCH_SHMOBILE
  1096. default "9" if SA1111
  1097. default "11"
  1098. help
  1099. The kernel memory allocator divides physically contiguous memory
  1100. blocks into "zones", where each zone is a power of two number of
  1101. pages. This option selects the largest power of two that the kernel
  1102. keeps in the memory allocator. If you need to allocate very large
  1103. blocks of physically contiguous memory, then you may need to
  1104. increase this value.
  1105. This config option is actually maximum order plus one. For example,
  1106. a value of 11 means that the largest free memory block is 2^10 pages.
  1107. config LEDS
  1108. bool "Timer and CPU usage LEDs"
  1109. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  1110. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  1111. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  1112. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  1113. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  1114. ARCH_AT91 || ARCH_DAVINCI || \
  1115. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  1116. help
  1117. If you say Y here, the LEDs on your machine will be used
  1118. to provide useful information about your current system status.
  1119. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  1120. be able to select which LEDs are active using the options below. If
  1121. you are compiling a kernel for the EBSA-110 or the LART however, the
  1122. red LED will simply flash regularly to indicate that the system is
  1123. still functional. It is safe to say Y here if you have a CATS
  1124. system, but the driver will do nothing.
  1125. config LEDS_TIMER
  1126. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  1127. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1128. || MACH_OMAP_PERSEUS2
  1129. depends on LEDS
  1130. depends on !GENERIC_CLOCKEVENTS
  1131. default y if ARCH_EBSA110
  1132. help
  1133. If you say Y here, one of the system LEDs (the green one on the
  1134. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1135. will flash regularly to indicate that the system is still
  1136. operational. This is mainly useful to kernel hackers who are
  1137. debugging unstable kernels.
  1138. The LART uses the same LED for both Timer LED and CPU usage LED
  1139. functions. You may choose to use both, but the Timer LED function
  1140. will overrule the CPU usage LED.
  1141. config LEDS_CPU
  1142. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1143. !ARCH_OMAP) \
  1144. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1145. || MACH_OMAP_PERSEUS2
  1146. depends on LEDS
  1147. help
  1148. If you say Y here, the red LED will be used to give a good real
  1149. time indication of CPU usage, by lighting whenever the idle task
  1150. is not currently executing.
  1151. The LART uses the same LED for both Timer LED and CPU usage LED
  1152. functions. You may choose to use both, but the Timer LED function
  1153. will overrule the CPU usage LED.
  1154. config ALIGNMENT_TRAP
  1155. bool
  1156. depends on CPU_CP15_MMU
  1157. default y if !ARCH_EBSA110
  1158. select HAVE_PROC_CPU if PROC_FS
  1159. help
  1160. ARM processors cannot fetch/store information which is not
  1161. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1162. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1163. fetch/store instructions will be emulated in software if you say
  1164. here, which has a severe performance impact. This is necessary for
  1165. correct operation of some network protocols. With an IP-only
  1166. configuration it is safe to say N, otherwise say Y.
  1167. config UACCESS_WITH_MEMCPY
  1168. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1169. depends on MMU && EXPERIMENTAL
  1170. default y if CPU_FEROCEON
  1171. help
  1172. Implement faster copy_to_user and clear_user methods for CPU
  1173. cores where a 8-word STM instruction give significantly higher
  1174. memory write throughput than a sequence of individual 32bit stores.
  1175. A possible side effect is a slight increase in scheduling latency
  1176. between threads sharing the same address space if they invoke
  1177. such copy operations with large buffers.
  1178. However, if the CPU data cache is using a write-allocate mode,
  1179. this option is unlikely to provide any performance gain.
  1180. config CC_STACKPROTECTOR
  1181. bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
  1182. help
  1183. This option turns on the -fstack-protector GCC feature. This
  1184. feature puts, at the beginning of functions, a canary value on
  1185. the stack just before the return address, and validates
  1186. the value just before actually returning. Stack based buffer
  1187. overflows (that need to overwrite this return address) now also
  1188. overwrite the canary, which gets detected and the attack is then
  1189. neutralized via a kernel panic.
  1190. This feature requires gcc version 4.2 or above.
  1191. config DEPRECATED_PARAM_STRUCT
  1192. bool "Provide old way to pass kernel parameters"
  1193. help
  1194. This was deprecated in 2001 and announced to live on for 5 years.
  1195. Some old boot loaders still use this way.
  1196. endmenu
  1197. menu "Boot options"
  1198. # Compressed boot loader in ROM. Yes, we really want to ask about
  1199. # TEXT and BSS so we preserve their values in the config files.
  1200. config ZBOOT_ROM_TEXT
  1201. hex "Compressed ROM boot loader base address"
  1202. default "0"
  1203. help
  1204. The physical address at which the ROM-able zImage is to be
  1205. placed in the target. Platforms which normally make use of
  1206. ROM-able zImage formats normally set this to a suitable
  1207. value in their defconfig file.
  1208. If ZBOOT_ROM is not enabled, this has no effect.
  1209. config ZBOOT_ROM_BSS
  1210. hex "Compressed ROM boot loader BSS address"
  1211. default "0"
  1212. help
  1213. The base address of an area of read/write memory in the target
  1214. for the ROM-able zImage which must be available while the
  1215. decompressor is running. It must be large enough to hold the
  1216. entire decompressed kernel plus an additional 128 KiB.
  1217. Platforms which normally make use of ROM-able zImage formats
  1218. normally set this to a suitable value in their defconfig file.
  1219. If ZBOOT_ROM is not enabled, this has no effect.
  1220. config ZBOOT_ROM
  1221. bool "Compressed boot loader in ROM/flash"
  1222. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1223. help
  1224. Say Y here if you intend to execute your compressed kernel image
  1225. (zImage) directly from ROM or flash. If unsure, say N.
  1226. config CMDLINE
  1227. string "Default kernel command string"
  1228. default ""
  1229. help
  1230. On some architectures (EBSA110 and CATS), there is currently no way
  1231. for the boot loader to pass arguments to the kernel. For these
  1232. architectures, you should supply some command-line options at build
  1233. time by entering them here. As a minimum, you should specify the
  1234. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1235. config CMDLINE_FORCE
  1236. bool "Always use the default kernel command string"
  1237. depends on CMDLINE != ""
  1238. help
  1239. Always use the default kernel command string, even if the boot
  1240. loader passes other arguments to the kernel.
  1241. This is useful if you cannot or don't want to change the
  1242. command-line options your boot loader passes to the kernel.
  1243. If unsure, say N.
  1244. config XIP_KERNEL
  1245. bool "Kernel Execute-In-Place from ROM"
  1246. depends on !ZBOOT_ROM
  1247. help
  1248. Execute-In-Place allows the kernel to run from non-volatile storage
  1249. directly addressable by the CPU, such as NOR flash. This saves RAM
  1250. space since the text section of the kernel is not loaded from flash
  1251. to RAM. Read-write sections, such as the data section and stack,
  1252. are still copied to RAM. The XIP kernel is not compressed since
  1253. it has to run directly from flash, so it will take more space to
  1254. store it. The flash address used to link the kernel object files,
  1255. and for storing it, is configuration dependent. Therefore, if you
  1256. say Y here, you must know the proper physical address where to
  1257. store the kernel image depending on your own flash memory usage.
  1258. Also note that the make target becomes "make xipImage" rather than
  1259. "make zImage" or "make Image". The final kernel binary to put in
  1260. ROM memory will be arch/arm/boot/xipImage.
  1261. If unsure, say N.
  1262. config XIP_PHYS_ADDR
  1263. hex "XIP Kernel Physical Location"
  1264. depends on XIP_KERNEL
  1265. default "0x00080000"
  1266. help
  1267. This is the physical address in your flash memory the kernel will
  1268. be linked for and stored to. This address is dependent on your
  1269. own flash usage.
  1270. config KEXEC
  1271. bool "Kexec system call (EXPERIMENTAL)"
  1272. depends on EXPERIMENTAL
  1273. help
  1274. kexec is a system call that implements the ability to shutdown your
  1275. current kernel, and to start another kernel. It is like a reboot
  1276. but it is independent of the system firmware. And like a reboot
  1277. you can start any kernel with it, not just Linux.
  1278. It is an ongoing process to be certain the hardware in a machine
  1279. is properly shutdown, so do not be surprised if this code does not
  1280. initially work for you. It may help to enable device hotplugging
  1281. support.
  1282. config ATAGS_PROC
  1283. bool "Export atags in procfs"
  1284. depends on KEXEC
  1285. default y
  1286. help
  1287. Should the atags used to boot the kernel be exported in an "atags"
  1288. file in procfs. Useful with kexec.
  1289. config AUTO_ZRELADDR
  1290. bool "Auto calculation of the decompressed kernel image address"
  1291. depends on !ZBOOT_ROM && !ARCH_U300
  1292. help
  1293. ZRELADDR is the physical address where the decompressed kernel
  1294. image will be placed. If AUTO_ZRELADDR is selected, the address
  1295. will be determined at run-time by masking the current IP with
  1296. 0xf8000000. This assumes the zImage being placed in the first 128MB
  1297. from start of memory.
  1298. config ZRELADDR
  1299. hex "Physical address of the decompressed kernel image"
  1300. depends on !AUTO_ZRELADDR
  1301. default 0x00008000 if ARCH_BCMRING ||\
  1302. ARCH_CNS3XXX ||\
  1303. ARCH_DOVE ||\
  1304. ARCH_EBSA110 ||\
  1305. ARCH_FOOTBRIDGE ||\
  1306. ARCH_INTEGRATOR ||\
  1307. ARCH_IOP13XX ||\
  1308. ARCH_IOP33X ||\
  1309. ARCH_IXP2000 ||\
  1310. ARCH_IXP23XX ||\
  1311. ARCH_IXP4XX ||\
  1312. ARCH_KIRKWOOD ||\
  1313. ARCH_KS8695 ||\
  1314. ARCH_LOKI ||\
  1315. ARCH_MMP ||\
  1316. ARCH_MV78XX0 ||\
  1317. ARCH_NOMADIK ||\
  1318. ARCH_NUC93X ||\
  1319. ARCH_NS9XXX ||\
  1320. ARCH_ORION5X ||\
  1321. ARCH_SPEAR3XX ||\
  1322. ARCH_SPEAR6XX ||\
  1323. ARCH_U8500 ||\
  1324. ARCH_VERSATILE ||\
  1325. ARCH_W90X900
  1326. default 0x08008000 if ARCH_MX1 ||\
  1327. ARCH_SHARK
  1328. default 0x10008000 if ARCH_MSM ||\
  1329. ARCH_OMAP1 ||\
  1330. ARCH_RPC
  1331. default 0x20008000 if ARCH_S5P6440 ||\
  1332. ARCH_S5P6442 ||\
  1333. ARCH_S5PC100 ||\
  1334. ARCH_S5PV210
  1335. default 0x30008000 if ARCH_S3C2410 ||\
  1336. ARCH_S3C2400 ||\
  1337. ARCH_S3C2412 ||\
  1338. ARCH_S3C2416 ||\
  1339. ARCH_S3C2440 ||\
  1340. ARCH_S3C2443
  1341. default 0x40008000 if ARCH_STMP378X ||\
  1342. ARCH_STMP37XX ||\
  1343. ARCH_SH7372 ||\
  1344. ARCH_SH7377
  1345. default 0x50008000 if ARCH_S3C64XX ||\
  1346. ARCH_SH7367
  1347. default 0x60008000 if ARCH_VEXPRESS
  1348. default 0x80008000 if ARCH_MX25 ||\
  1349. ARCH_MX3 ||\
  1350. ARCH_NETX ||\
  1351. ARCH_OMAP2PLUS ||\
  1352. ARCH_PNX4008
  1353. default 0x90008000 if ARCH_MX5 ||\
  1354. ARCH_MX91231
  1355. default 0xa0008000 if ARCH_IOP32X ||\
  1356. ARCH_PXA ||\
  1357. MACH_MX27
  1358. default 0xc0008000 if ARCH_LH7A40X ||\
  1359. MACH_MX21
  1360. default 0xf0008000 if ARCH_AAEC2000 ||\
  1361. ARCH_L7200
  1362. default 0xc0028000 if ARCH_CLPS711X
  1363. default 0x70008000 if ARCH_AT91 && (ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
  1364. default 0x20008000 if ARCH_AT91 && !(ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
  1365. default 0xc0008000 if ARCH_DAVINCI && ARCH_DAVINCI_DA8XX
  1366. default 0x80008000 if ARCH_DAVINCI && !ARCH_DAVINCI_DA8XX
  1367. default 0x00008000 if ARCH_EP93XX && EP93XX_SDCE3_SYNC_PHYS_OFFSET
  1368. default 0xc0008000 if ARCH_EP93XX && EP93XX_SDCE0_PHYS_OFFSET
  1369. default 0xd0008000 if ARCH_EP93XX && EP93XX_SDCE1_PHYS_OFFSET
  1370. default 0xe0008000 if ARCH_EP93XX && EP93XX_SDCE2_PHYS_OFFSET
  1371. default 0xf0008000 if ARCH_EP93XX && EP93XX_SDCE3_ASYNC_PHYS_OFFSET
  1372. default 0x00008000 if ARCH_GEMINI && GEMINI_MEM_SWAP
  1373. default 0x10008000 if ARCH_GEMINI && !GEMINI_MEM_SWAP
  1374. default 0x70008000 if ARCH_REALVIEW && REALVIEW_HIGH_PHYS_OFFSET
  1375. default 0x00008000 if ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET
  1376. default 0xc0208000 if ARCH_SA1100 && SA1111
  1377. default 0xc0008000 if ARCH_SA1100 && !SA1111
  1378. default 0x30108000 if ARCH_S3C2410 && PM_H1940
  1379. default 0x28E08000 if ARCH_U300 && MACH_U300_SINGLE_RAM
  1380. default 0x48008000 if ARCH_U300 && !MACH_U300_SINGLE_RAM
  1381. help
  1382. ZRELADDR is the physical address where the decompressed kernel
  1383. image will be placed. ZRELADDR has to be specified when the
  1384. assumption of AUTO_ZRELADDR is not valid, or when ZBOOT_ROM is
  1385. selected.
  1386. endmenu
  1387. menu "CPU Power Management"
  1388. if ARCH_HAS_CPUFREQ
  1389. source "drivers/cpufreq/Kconfig"
  1390. config CPU_FREQ_SA1100
  1391. bool
  1392. config CPU_FREQ_SA1110
  1393. bool
  1394. config CPU_FREQ_INTEGRATOR
  1395. tristate "CPUfreq driver for ARM Integrator CPUs"
  1396. depends on ARCH_INTEGRATOR && CPU_FREQ
  1397. default y
  1398. help
  1399. This enables the CPUfreq driver for ARM Integrator CPUs.
  1400. For details, take a look at <file:Documentation/cpu-freq>.
  1401. If in doubt, say Y.
  1402. config CPU_FREQ_PXA
  1403. bool
  1404. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1405. default y
  1406. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1407. config CPU_FREQ_S3C64XX
  1408. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1409. depends on CPU_FREQ && CPU_S3C6410
  1410. config CPU_FREQ_S3C
  1411. bool
  1412. help
  1413. Internal configuration node for common cpufreq on Samsung SoC
  1414. config CPU_FREQ_S3C24XX
  1415. bool "CPUfreq driver for Samsung S3C24XX series CPUs"
  1416. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1417. select CPU_FREQ_S3C
  1418. help
  1419. This enables the CPUfreq driver for the Samsung S3C24XX family
  1420. of CPUs.
  1421. For details, take a look at <file:Documentation/cpu-freq>.
  1422. If in doubt, say N.
  1423. config CPU_FREQ_S3C24XX_PLL
  1424. bool "Support CPUfreq changing of PLL frequency"
  1425. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1426. help
  1427. Compile in support for changing the PLL frequency from the
  1428. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1429. after a frequency change, so by default it is not enabled.
  1430. This also means that the PLL tables for the selected CPU(s) will
  1431. be built which may increase the size of the kernel image.
  1432. config CPU_FREQ_S3C24XX_DEBUG
  1433. bool "Debug CPUfreq Samsung driver core"
  1434. depends on CPU_FREQ_S3C24XX
  1435. help
  1436. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1437. config CPU_FREQ_S3C24XX_IODEBUG
  1438. bool "Debug CPUfreq Samsung driver IO timing"
  1439. depends on CPU_FREQ_S3C24XX
  1440. help
  1441. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1442. config CPU_FREQ_S3C24XX_DEBUGFS
  1443. bool "Export debugfs for CPUFreq"
  1444. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1445. help
  1446. Export status information via debugfs.
  1447. endif
  1448. source "drivers/cpuidle/Kconfig"
  1449. endmenu
  1450. menu "Floating point emulation"
  1451. comment "At least one emulation must be selected"
  1452. config FPE_NWFPE
  1453. bool "NWFPE math emulation"
  1454. depends on !AEABI || OABI_COMPAT
  1455. ---help---
  1456. Say Y to include the NWFPE floating point emulator in the kernel.
  1457. This is necessary to run most binaries. Linux does not currently
  1458. support floating point hardware so you need to say Y here even if
  1459. your machine has an FPA or floating point co-processor podule.
  1460. You may say N here if you are going to load the Acorn FPEmulator
  1461. early in the bootup.
  1462. config FPE_NWFPE_XP
  1463. bool "Support extended precision"
  1464. depends on FPE_NWFPE
  1465. help
  1466. Say Y to include 80-bit support in the kernel floating-point
  1467. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1468. Note that gcc does not generate 80-bit operations by default,
  1469. so in most cases this option only enlarges the size of the
  1470. floating point emulator without any good reason.
  1471. You almost surely want to say N here.
  1472. config FPE_FASTFPE
  1473. bool "FastFPE math emulation (EXPERIMENTAL)"
  1474. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1475. ---help---
  1476. Say Y here to include the FAST floating point emulator in the kernel.
  1477. This is an experimental much faster emulator which now also has full
  1478. precision for the mantissa. It does not support any exceptions.
  1479. It is very simple, and approximately 3-6 times faster than NWFPE.
  1480. It should be sufficient for most programs. It may be not suitable
  1481. for scientific calculations, but you have to check this for yourself.
  1482. If you do not feel you need a faster FP emulation you should better
  1483. choose NWFPE.
  1484. config VFP
  1485. bool "VFP-format floating point maths"
  1486. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1487. help
  1488. Say Y to include VFP support code in the kernel. This is needed
  1489. if your hardware includes a VFP unit.
  1490. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1491. release notes and additional status information.
  1492. Say N if your target does not have VFP hardware.
  1493. config VFPv3
  1494. bool
  1495. depends on VFP
  1496. default y if CPU_V7
  1497. config NEON
  1498. bool "Advanced SIMD (NEON) Extension support"
  1499. depends on VFPv3 && CPU_V7
  1500. help
  1501. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1502. Extension.
  1503. endmenu
  1504. menu "Userspace binary formats"
  1505. source "fs/Kconfig.binfmt"
  1506. config ARTHUR
  1507. tristate "RISC OS personality"
  1508. depends on !AEABI
  1509. help
  1510. Say Y here to include the kernel code necessary if you want to run
  1511. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1512. experimental; if this sounds frightening, say N and sleep in peace.
  1513. You can also say M here to compile this support as a module (which
  1514. will be called arthur).
  1515. endmenu
  1516. menu "Power management options"
  1517. source "kernel/power/Kconfig"
  1518. config ARCH_SUSPEND_POSSIBLE
  1519. def_bool y
  1520. endmenu
  1521. source "net/Kconfig"
  1522. source "drivers/Kconfig"
  1523. source "fs/Kconfig"
  1524. source "arch/arm/Kconfig.debug"
  1525. source "security/Kconfig"
  1526. source "crypto/Kconfig"
  1527. source "lib/Kconfig"