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