Kconfig 52 KB

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  1. config ARM
  2. bool
  3. default y
  4. select HAVE_AOUT
  5. select HAVE_DMA_API_DEBUG
  6. select HAVE_IDE
  7. select HAVE_MEMBLOCK
  8. select RTC_LIB
  9. select SYS_SUPPORTS_APM_EMULATION
  10. select GENERIC_ATOMIC64 if (!CPU_32v6K || !AEABI)
  11. select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
  12. select HAVE_ARCH_KGDB
  13. select HAVE_KPROBES if (!XIP_KERNEL && !THUMB2_KERNEL)
  14. select HAVE_KRETPROBES if (HAVE_KPROBES)
  15. select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  16. select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
  17. select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
  18. select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
  19. select HAVE_GENERIC_DMA_COHERENT
  20. select HAVE_KERNEL_GZIP
  21. select HAVE_KERNEL_LZO
  22. select HAVE_KERNEL_LZMA
  23. select HAVE_IRQ_WORK
  24. select HAVE_PERF_EVENTS
  25. select PERF_USE_VMALLOC
  26. select HAVE_REGS_AND_STACK_ACCESS_API
  27. select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V7))
  28. select HAVE_C_RECORDMCOUNT
  29. select HAVE_GENERIC_HARDIRQS
  30. select HAVE_SPARSE_IRQ
  31. help
  32. The ARM series is a line of low-power-consumption RISC chip designs
  33. licensed by ARM Ltd and targeted at embedded applications and
  34. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  35. manufactured, but legacy ARM-based PC hardware remains popular in
  36. Europe. There is an ARM Linux project with a web page at
  37. <http://www.arm.linux.org.uk/>.
  38. config HAVE_PWM
  39. bool
  40. config MIGHT_HAVE_PCI
  41. bool
  42. config SYS_SUPPORTS_APM_EMULATION
  43. bool
  44. config HAVE_SCHED_CLOCK
  45. bool
  46. config GENERIC_GPIO
  47. bool
  48. config ARCH_USES_GETTIMEOFFSET
  49. bool
  50. default n
  51. config GENERIC_CLOCKEVENTS
  52. bool
  53. config GENERIC_CLOCKEVENTS_BROADCAST
  54. bool
  55. depends on GENERIC_CLOCKEVENTS
  56. default y if SMP
  57. config HAVE_TCM
  58. bool
  59. select GENERIC_ALLOCATOR
  60. config HAVE_PROC_CPU
  61. bool
  62. config NO_IOPORT
  63. bool
  64. config EISA
  65. bool
  66. ---help---
  67. The Extended Industry Standard Architecture (EISA) bus was
  68. developed as an open alternative to the IBM MicroChannel bus.
  69. The EISA bus provided some of the features of the IBM MicroChannel
  70. bus while maintaining backward compatibility with cards made for
  71. the older ISA bus. The EISA bus saw limited use between 1988 and
  72. 1995 when it was made obsolete by the PCI bus.
  73. Say Y here if you are building a kernel for an EISA-based machine.
  74. Otherwise, say N.
  75. config SBUS
  76. bool
  77. config MCA
  78. bool
  79. help
  80. MicroChannel Architecture is found in some IBM PS/2 machines and
  81. laptops. It is a bus system similar to PCI or ISA. See
  82. <file:Documentation/mca.txt> (and especially the web page given
  83. there) before attempting to build an MCA bus kernel.
  84. config STACKTRACE_SUPPORT
  85. bool
  86. default y
  87. config HAVE_LATENCYTOP_SUPPORT
  88. bool
  89. depends on !SMP
  90. default y
  91. config LOCKDEP_SUPPORT
  92. bool
  93. default y
  94. config TRACE_IRQFLAGS_SUPPORT
  95. bool
  96. default y
  97. config HARDIRQS_SW_RESEND
  98. bool
  99. default y
  100. config GENERIC_IRQ_PROBE
  101. bool
  102. default y
  103. config GENERIC_LOCKBREAK
  104. bool
  105. default y
  106. depends on SMP && PREEMPT
  107. config RWSEM_GENERIC_SPINLOCK
  108. bool
  109. default y
  110. config RWSEM_XCHGADD_ALGORITHM
  111. bool
  112. config ARCH_HAS_ILOG2_U32
  113. bool
  114. config ARCH_HAS_ILOG2_U64
  115. bool
  116. config ARCH_HAS_CPUFREQ
  117. bool
  118. help
  119. Internal node to signify that the ARCH has CPUFREQ support
  120. and that the relevant menu configurations are displayed for
  121. it.
  122. config ARCH_HAS_CPU_IDLE_WAIT
  123. def_bool y
  124. config GENERIC_HWEIGHT
  125. bool
  126. default y
  127. config GENERIC_CALIBRATE_DELAY
  128. bool
  129. default y
  130. config ARCH_MAY_HAVE_PC_FDC
  131. bool
  132. config ZONE_DMA
  133. bool
  134. config NEED_DMA_MAP_STATE
  135. def_bool y
  136. config GENERIC_ISA_DMA
  137. bool
  138. config FIQ
  139. bool
  140. config ARCH_MTD_XIP
  141. bool
  142. config ARM_L1_CACHE_SHIFT_6
  143. bool
  144. help
  145. Setting ARM L1 cache line size to 64 Bytes.
  146. config VECTORS_BASE
  147. hex
  148. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  149. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  150. default 0x00000000
  151. help
  152. The base address of exception vectors.
  153. source "init/Kconfig"
  154. source "kernel/Kconfig.freezer"
  155. menu "System Type"
  156. config MMU
  157. bool "MMU-based Paged Memory Management Support"
  158. default y
  159. help
  160. Select if you want MMU-based virtualised addressing space
  161. support by paged memory management. If unsure, say 'Y'.
  162. #
  163. # The "ARM system type" choice list is ordered alphabetically by option
  164. # text. Please add new entries in the option alphabetic order.
  165. #
  166. choice
  167. prompt "ARM system type"
  168. default ARCH_VERSATILE
  169. config ARCH_AAEC2000
  170. bool "Agilent AAEC-2000 based"
  171. select CPU_ARM920T
  172. select ARM_AMBA
  173. select HAVE_CLK
  174. select ARCH_USES_GETTIMEOFFSET
  175. help
  176. This enables support for systems based on the Agilent AAEC-2000
  177. config ARCH_INTEGRATOR
  178. bool "ARM Ltd. Integrator family"
  179. select ARM_AMBA
  180. select ARCH_HAS_CPUFREQ
  181. select CLKDEV_LOOKUP
  182. select ICST
  183. select GENERIC_CLOCKEVENTS
  184. select PLAT_VERSATILE
  185. help
  186. Support for ARM's Integrator platform.
  187. config ARCH_REALVIEW
  188. bool "ARM Ltd. RealView family"
  189. select ARM_AMBA
  190. select CLKDEV_LOOKUP
  191. select HAVE_SCHED_CLOCK
  192. select ICST
  193. select GENERIC_CLOCKEVENTS
  194. select ARCH_WANT_OPTIONAL_GPIOLIB
  195. select PLAT_VERSATILE
  196. select ARM_TIMER_SP804
  197. select GPIO_PL061 if GPIOLIB
  198. help
  199. This enables support for ARM Ltd RealView boards.
  200. config ARCH_VERSATILE
  201. bool "ARM Ltd. Versatile family"
  202. select ARM_AMBA
  203. select ARM_VIC
  204. select CLKDEV_LOOKUP
  205. select HAVE_SCHED_CLOCK
  206. select ICST
  207. select GENERIC_CLOCKEVENTS
  208. select ARCH_WANT_OPTIONAL_GPIOLIB
  209. select PLAT_VERSATILE
  210. select ARM_TIMER_SP804
  211. help
  212. This enables support for ARM Ltd Versatile board.
  213. config ARCH_VEXPRESS
  214. bool "ARM Ltd. Versatile Express family"
  215. select ARCH_WANT_OPTIONAL_GPIOLIB
  216. select ARM_AMBA
  217. select ARM_TIMER_SP804
  218. select CLKDEV_LOOKUP
  219. select GENERIC_CLOCKEVENTS
  220. select HAVE_CLK
  221. select HAVE_SCHED_CLOCK
  222. select ICST
  223. select PLAT_VERSATILE
  224. help
  225. This enables support for the ARM Ltd Versatile Express boards.
  226. config ARCH_AT91
  227. bool "Atmel AT91"
  228. select ARCH_REQUIRE_GPIOLIB
  229. select HAVE_CLK
  230. help
  231. This enables support for systems based on the Atmel AT91RM9200,
  232. AT91SAM9 and AT91CAP9 processors.
  233. config ARCH_BCMRING
  234. bool "Broadcom BCMRING"
  235. depends on MMU
  236. select CPU_V6
  237. select ARM_AMBA
  238. select CLKDEV_LOOKUP
  239. select GENERIC_CLOCKEVENTS
  240. select ARCH_WANT_OPTIONAL_GPIOLIB
  241. help
  242. Support for Broadcom's BCMRing platform.
  243. config ARCH_CLPS711X
  244. bool "Cirrus Logic CLPS711x/EP721x-based"
  245. select CPU_ARM720T
  246. select ARCH_USES_GETTIMEOFFSET
  247. help
  248. Support for Cirrus Logic 711x/721x based boards.
  249. config ARCH_CNS3XXX
  250. bool "Cavium Networks CNS3XXX family"
  251. select CPU_V6
  252. select GENERIC_CLOCKEVENTS
  253. select ARM_GIC
  254. select MIGHT_HAVE_PCI
  255. select PCI_DOMAINS if PCI
  256. help
  257. Support for Cavium Networks CNS3XXX platform.
  258. config ARCH_GEMINI
  259. bool "Cortina Systems Gemini"
  260. select CPU_FA526
  261. select ARCH_REQUIRE_GPIOLIB
  262. select ARCH_USES_GETTIMEOFFSET
  263. help
  264. Support for the Cortina Systems Gemini family SoCs
  265. config ARCH_EBSA110
  266. bool "EBSA-110"
  267. select CPU_SA110
  268. select ISA
  269. select NO_IOPORT
  270. select ARCH_USES_GETTIMEOFFSET
  271. help
  272. This is an evaluation board for the StrongARM processor available
  273. from Digital. It has limited hardware on-board, including an
  274. Ethernet interface, two PCMCIA sockets, two serial ports and a
  275. parallel port.
  276. config ARCH_EP93XX
  277. bool "EP93xx-based"
  278. select CPU_ARM920T
  279. select ARM_AMBA
  280. select ARM_VIC
  281. select CLKDEV_LOOKUP
  282. select ARCH_REQUIRE_GPIOLIB
  283. select ARCH_HAS_HOLES_MEMORYMODEL
  284. select ARCH_USES_GETTIMEOFFSET
  285. help
  286. This enables support for the Cirrus EP93xx series of CPUs.
  287. config ARCH_FOOTBRIDGE
  288. bool "FootBridge"
  289. select CPU_SA110
  290. select FOOTBRIDGE
  291. select ARCH_USES_GETTIMEOFFSET
  292. help
  293. Support for systems based on the DC21285 companion chip
  294. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  295. config ARCH_MXC
  296. bool "Freescale MXC/iMX-based"
  297. select GENERIC_CLOCKEVENTS
  298. select ARCH_REQUIRE_GPIOLIB
  299. select CLKDEV_LOOKUP
  300. help
  301. Support for Freescale MXC/iMX-based family of processors
  302. config ARCH_MXS
  303. bool "Freescale MXS-based"
  304. select GENERIC_CLOCKEVENTS
  305. select ARCH_REQUIRE_GPIOLIB
  306. select COMMON_CLKDEV
  307. help
  308. Support for Freescale MXS-based family of processors
  309. config ARCH_STMP3XXX
  310. bool "Freescale STMP3xxx"
  311. select CPU_ARM926T
  312. select CLKDEV_LOOKUP
  313. select ARCH_REQUIRE_GPIOLIB
  314. select GENERIC_CLOCKEVENTS
  315. select USB_ARCH_HAS_EHCI
  316. help
  317. Support for systems based on the Freescale 3xxx CPUs.
  318. config ARCH_NETX
  319. bool "Hilscher NetX based"
  320. select CPU_ARM926T
  321. select ARM_VIC
  322. select GENERIC_CLOCKEVENTS
  323. help
  324. This enables support for systems based on the Hilscher NetX Soc
  325. config ARCH_H720X
  326. bool "Hynix HMS720x-based"
  327. select CPU_ARM720T
  328. select ISA_DMA_API
  329. select ARCH_USES_GETTIMEOFFSET
  330. help
  331. This enables support for systems based on the Hynix HMS720x
  332. config ARCH_IOP13XX
  333. bool "IOP13xx-based"
  334. depends on MMU
  335. select CPU_XSC3
  336. select PLAT_IOP
  337. select PCI
  338. select ARCH_SUPPORTS_MSI
  339. select VMSPLIT_1G
  340. help
  341. Support for Intel's IOP13XX (XScale) family of processors.
  342. config ARCH_IOP32X
  343. bool "IOP32x-based"
  344. depends on MMU
  345. select CPU_XSCALE
  346. select PLAT_IOP
  347. select PCI
  348. select ARCH_REQUIRE_GPIOLIB
  349. help
  350. Support for Intel's 80219 and IOP32X (XScale) family of
  351. processors.
  352. config ARCH_IOP33X
  353. bool "IOP33x-based"
  354. depends on MMU
  355. select CPU_XSCALE
  356. select PLAT_IOP
  357. select PCI
  358. select ARCH_REQUIRE_GPIOLIB
  359. help
  360. Support for Intel's IOP33X (XScale) family of processors.
  361. config ARCH_IXP23XX
  362. bool "IXP23XX-based"
  363. depends on MMU
  364. select CPU_XSC3
  365. select PCI
  366. select ARCH_USES_GETTIMEOFFSET
  367. help
  368. Support for Intel's IXP23xx (XScale) family of processors.
  369. config ARCH_IXP2000
  370. bool "IXP2400/2800-based"
  371. depends on MMU
  372. select CPU_XSCALE
  373. select PCI
  374. select ARCH_USES_GETTIMEOFFSET
  375. help
  376. Support for Intel's IXP2400/2800 (XScale) family of processors.
  377. config ARCH_IXP4XX
  378. bool "IXP4xx-based"
  379. depends on MMU
  380. select CPU_XSCALE
  381. select GENERIC_GPIO
  382. select GENERIC_CLOCKEVENTS
  383. select HAVE_SCHED_CLOCK
  384. select MIGHT_HAVE_PCI
  385. select DMABOUNCE if PCI
  386. help
  387. Support for Intel's IXP4XX (XScale) family of processors.
  388. config ARCH_DOVE
  389. bool "Marvell Dove"
  390. select PCI
  391. select ARCH_REQUIRE_GPIOLIB
  392. select GENERIC_CLOCKEVENTS
  393. select PLAT_ORION
  394. help
  395. Support for the Marvell Dove SoC 88AP510
  396. config ARCH_KIRKWOOD
  397. bool "Marvell Kirkwood"
  398. select CPU_FEROCEON
  399. select PCI
  400. select ARCH_REQUIRE_GPIOLIB
  401. select GENERIC_CLOCKEVENTS
  402. select PLAT_ORION
  403. help
  404. Support for the following Marvell Kirkwood series SoCs:
  405. 88F6180, 88F6192 and 88F6281.
  406. config ARCH_LOKI
  407. bool "Marvell Loki (88RC8480)"
  408. select CPU_FEROCEON
  409. select GENERIC_CLOCKEVENTS
  410. select PLAT_ORION
  411. help
  412. Support for the Marvell Loki (88RC8480) SoC.
  413. config ARCH_LPC32XX
  414. bool "NXP LPC32XX"
  415. select CPU_ARM926T
  416. select ARCH_REQUIRE_GPIOLIB
  417. select HAVE_IDE
  418. select ARM_AMBA
  419. select USB_ARCH_HAS_OHCI
  420. select CLKDEV_LOOKUP
  421. select GENERIC_TIME
  422. select GENERIC_CLOCKEVENTS
  423. help
  424. Support for the NXP LPC32XX family of processors
  425. config ARCH_MV78XX0
  426. bool "Marvell MV78xx0"
  427. select CPU_FEROCEON
  428. select PCI
  429. select ARCH_REQUIRE_GPIOLIB
  430. select GENERIC_CLOCKEVENTS
  431. select PLAT_ORION
  432. help
  433. Support for the following Marvell MV78xx0 series SoCs:
  434. MV781x0, MV782x0.
  435. config ARCH_ORION5X
  436. bool "Marvell Orion"
  437. depends on MMU
  438. select CPU_FEROCEON
  439. select PCI
  440. select ARCH_REQUIRE_GPIOLIB
  441. select GENERIC_CLOCKEVENTS
  442. select PLAT_ORION
  443. help
  444. Support for the following Marvell Orion 5x series SoCs:
  445. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  446. Orion-2 (5281), Orion-1-90 (6183).
  447. config ARCH_MMP
  448. bool "Marvell PXA168/910/MMP2"
  449. depends on MMU
  450. select ARCH_REQUIRE_GPIOLIB
  451. select CLKDEV_LOOKUP
  452. select GENERIC_CLOCKEVENTS
  453. select HAVE_SCHED_CLOCK
  454. select TICK_ONESHOT
  455. select PLAT_PXA
  456. select SPARSE_IRQ
  457. help
  458. Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
  459. config ARCH_KS8695
  460. bool "Micrel/Kendin KS8695"
  461. select CPU_ARM922T
  462. select ARCH_REQUIRE_GPIOLIB
  463. select ARCH_USES_GETTIMEOFFSET
  464. help
  465. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  466. System-on-Chip devices.
  467. config ARCH_NS9XXX
  468. bool "NetSilicon NS9xxx"
  469. select CPU_ARM926T
  470. select GENERIC_GPIO
  471. select GENERIC_CLOCKEVENTS
  472. select HAVE_CLK
  473. help
  474. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  475. System.
  476. <http://www.digi.com/products/microprocessors/index.jsp>
  477. config ARCH_W90X900
  478. bool "Nuvoton W90X900 CPU"
  479. select CPU_ARM926T
  480. select ARCH_REQUIRE_GPIOLIB
  481. select CLKDEV_LOOKUP
  482. select GENERIC_CLOCKEVENTS
  483. help
  484. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  485. At present, the w90x900 has been renamed nuc900, regarding
  486. the ARM series product line, you can login the following
  487. link address to know more.
  488. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  489. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  490. config ARCH_NUC93X
  491. bool "Nuvoton NUC93X CPU"
  492. select CPU_ARM926T
  493. select CLKDEV_LOOKUP
  494. help
  495. Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
  496. low-power and high performance MPEG-4/JPEG multimedia controller chip.
  497. config ARCH_TEGRA
  498. bool "NVIDIA Tegra"
  499. select CLKDEV_LOOKUP
  500. select GENERIC_TIME
  501. select GENERIC_CLOCKEVENTS
  502. select GENERIC_GPIO
  503. select HAVE_CLK
  504. select HAVE_SCHED_CLOCK
  505. select ARCH_HAS_BARRIERS if CACHE_L2X0
  506. select ARCH_HAS_CPUFREQ
  507. help
  508. This enables support for NVIDIA Tegra based systems (Tegra APX,
  509. Tegra 6xx and Tegra 2 series).
  510. config ARCH_PNX4008
  511. bool "Philips Nexperia PNX4008 Mobile"
  512. select CPU_ARM926T
  513. select CLKDEV_LOOKUP
  514. select ARCH_USES_GETTIMEOFFSET
  515. help
  516. This enables support for Philips PNX4008 mobile platform.
  517. config ARCH_PXA
  518. bool "PXA2xx/PXA3xx-based"
  519. depends on MMU
  520. select ARCH_MTD_XIP
  521. select ARCH_HAS_CPUFREQ
  522. select CLKDEV_LOOKUP
  523. select ARCH_REQUIRE_GPIOLIB
  524. select GENERIC_CLOCKEVENTS
  525. select HAVE_SCHED_CLOCK
  526. select TICK_ONESHOT
  527. select PLAT_PXA
  528. select SPARSE_IRQ
  529. help
  530. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  531. config ARCH_MSM
  532. bool "Qualcomm MSM"
  533. select HAVE_CLK
  534. select GENERIC_CLOCKEVENTS
  535. select ARCH_REQUIRE_GPIOLIB
  536. help
  537. Support for Qualcomm MSM/QSD based systems. This runs on the
  538. apps processor of the MSM/QSD and depends on a shared memory
  539. interface to the modem processor which runs the baseband
  540. stack and controls some vital subsystems
  541. (clock and power control, etc).
  542. config ARCH_SHMOBILE
  543. bool "Renesas SH-Mobile / R-Mobile"
  544. select HAVE_CLK
  545. select CLKDEV_LOOKUP
  546. select GENERIC_CLOCKEVENTS
  547. select NO_IOPORT
  548. select SPARSE_IRQ
  549. select MULTI_IRQ_HANDLER
  550. help
  551. Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
  552. config ARCH_RPC
  553. bool "RiscPC"
  554. select ARCH_ACORN
  555. select FIQ
  556. select TIMER_ACORN
  557. select ARCH_MAY_HAVE_PC_FDC
  558. select HAVE_PATA_PLATFORM
  559. select ISA_DMA_API
  560. select NO_IOPORT
  561. select ARCH_SPARSEMEM_ENABLE
  562. select ARCH_USES_GETTIMEOFFSET
  563. help
  564. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  565. CD-ROM interface, serial and parallel port, and the floppy drive.
  566. config ARCH_SA1100
  567. bool "SA1100-based"
  568. select CPU_SA1100
  569. select ISA
  570. select ARCH_SPARSEMEM_ENABLE
  571. select ARCH_MTD_XIP
  572. select ARCH_HAS_CPUFREQ
  573. select CPU_FREQ
  574. select GENERIC_CLOCKEVENTS
  575. select HAVE_CLK
  576. select HAVE_SCHED_CLOCK
  577. select TICK_ONESHOT
  578. select ARCH_REQUIRE_GPIOLIB
  579. help
  580. Support for StrongARM 11x0 based boards.
  581. config ARCH_S3C2410
  582. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
  583. select GENERIC_GPIO
  584. select ARCH_HAS_CPUFREQ
  585. select HAVE_CLK
  586. select ARCH_USES_GETTIMEOFFSET
  587. select HAVE_S3C2410_I2C if I2C
  588. help
  589. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  590. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  591. the Samsung SMDK2410 development board (and derivatives).
  592. Note, the S3C2416 and the S3C2450 are so close that they even share
  593. the same SoC ID code. This means that there is no seperate machine
  594. directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
  595. config ARCH_S3C64XX
  596. bool "Samsung S3C64XX"
  597. select PLAT_SAMSUNG
  598. select CPU_V6
  599. select ARM_VIC
  600. select HAVE_CLK
  601. select NO_IOPORT
  602. select ARCH_USES_GETTIMEOFFSET
  603. select ARCH_HAS_CPUFREQ
  604. select ARCH_REQUIRE_GPIOLIB
  605. select SAMSUNG_CLKSRC
  606. select SAMSUNG_IRQ_VIC_TIMER
  607. select SAMSUNG_IRQ_UART
  608. select S3C_GPIO_TRACK
  609. select S3C_GPIO_PULL_UPDOWN
  610. select S3C_GPIO_CFG_S3C24XX
  611. select S3C_GPIO_CFG_S3C64XX
  612. select S3C_DEV_NAND
  613. select USB_ARCH_HAS_OHCI
  614. select SAMSUNG_GPIOLIB_4BIT
  615. select HAVE_S3C2410_I2C if I2C
  616. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  617. help
  618. Samsung S3C64XX series based systems
  619. config ARCH_S5P64X0
  620. bool "Samsung S5P6440 S5P6450"
  621. select CPU_V6
  622. select GENERIC_GPIO
  623. select HAVE_CLK
  624. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  625. select ARCH_USES_GETTIMEOFFSET
  626. select HAVE_S3C2410_I2C if I2C
  627. select HAVE_S3C_RTC if RTC_CLASS
  628. help
  629. Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
  630. SMDK6450.
  631. config ARCH_S5P6442
  632. bool "Samsung S5P6442"
  633. select CPU_V6
  634. select GENERIC_GPIO
  635. select HAVE_CLK
  636. select ARCH_USES_GETTIMEOFFSET
  637. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  638. help
  639. Samsung S5P6442 CPU based systems
  640. config ARCH_S5PC100
  641. bool "Samsung S5PC100"
  642. select GENERIC_GPIO
  643. select HAVE_CLK
  644. select CPU_V7
  645. select ARM_L1_CACHE_SHIFT_6
  646. select ARCH_USES_GETTIMEOFFSET
  647. select HAVE_S3C2410_I2C if I2C
  648. select HAVE_S3C_RTC if RTC_CLASS
  649. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  650. help
  651. Samsung S5PC100 series based systems
  652. config ARCH_S5PV210
  653. bool "Samsung S5PV210/S5PC110"
  654. select CPU_V7
  655. select ARCH_SPARSEMEM_ENABLE
  656. select GENERIC_GPIO
  657. select HAVE_CLK
  658. select ARM_L1_CACHE_SHIFT_6
  659. select ARCH_HAS_CPUFREQ
  660. select ARCH_USES_GETTIMEOFFSET
  661. select HAVE_S3C2410_I2C if I2C
  662. select HAVE_S3C_RTC if RTC_CLASS
  663. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  664. help
  665. Samsung S5PV210/S5PC110 series based systems
  666. config ARCH_S5PV310
  667. bool "Samsung S5PV310/S5PC210"
  668. select CPU_V7
  669. select ARCH_SPARSEMEM_ENABLE
  670. select GENERIC_GPIO
  671. select HAVE_CLK
  672. select GENERIC_CLOCKEVENTS
  673. select HAVE_S3C_RTC if RTC_CLASS
  674. select HAVE_S3C2410_I2C if I2C
  675. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  676. help
  677. Samsung S5PV310 series based systems
  678. config ARCH_SHARK
  679. bool "Shark"
  680. select CPU_SA110
  681. select ISA
  682. select ISA_DMA
  683. select ZONE_DMA
  684. select PCI
  685. select ARCH_USES_GETTIMEOFFSET
  686. help
  687. Support for the StrongARM based Digital DNARD machine, also known
  688. as "Shark" (<http://www.shark-linux.de/shark.html>).
  689. config ARCH_TCC_926
  690. bool "Telechips TCC ARM926-based systems"
  691. select CPU_ARM926T
  692. select HAVE_CLK
  693. select CLKDEV_LOOKUP
  694. select GENERIC_CLOCKEVENTS
  695. help
  696. Support for Telechips TCC ARM926-based systems.
  697. config ARCH_LH7A40X
  698. bool "Sharp LH7A40X"
  699. select CPU_ARM922T
  700. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  701. select ARCH_USES_GETTIMEOFFSET
  702. help
  703. Say Y here for systems based on one of the Sharp LH7A40X
  704. System on a Chip processors. These CPUs include an ARM922T
  705. core with a wide array of integrated devices for
  706. hand-held and low-power applications.
  707. config ARCH_U300
  708. bool "ST-Ericsson U300 Series"
  709. depends on MMU
  710. select CPU_ARM926T
  711. select HAVE_SCHED_CLOCK
  712. select HAVE_TCM
  713. select ARM_AMBA
  714. select ARM_VIC
  715. select GENERIC_CLOCKEVENTS
  716. select CLKDEV_LOOKUP
  717. select GENERIC_GPIO
  718. help
  719. Support for ST-Ericsson U300 series mobile platforms.
  720. config ARCH_U8500
  721. bool "ST-Ericsson U8500 Series"
  722. select CPU_V7
  723. select ARM_AMBA
  724. select GENERIC_CLOCKEVENTS
  725. select CLKDEV_LOOKUP
  726. select ARCH_REQUIRE_GPIOLIB
  727. select ARCH_HAS_CPUFREQ
  728. help
  729. Support for ST-Ericsson's Ux500 architecture
  730. config ARCH_NOMADIK
  731. bool "STMicroelectronics Nomadik"
  732. select ARM_AMBA
  733. select ARM_VIC
  734. select CPU_ARM926T
  735. select CLKDEV_LOOKUP
  736. select GENERIC_CLOCKEVENTS
  737. select ARCH_REQUIRE_GPIOLIB
  738. help
  739. Support for the Nomadik platform by ST-Ericsson
  740. config ARCH_DAVINCI
  741. bool "TI DaVinci"
  742. select GENERIC_CLOCKEVENTS
  743. select ARCH_REQUIRE_GPIOLIB
  744. select ZONE_DMA
  745. select HAVE_IDE
  746. select CLKDEV_LOOKUP
  747. select GENERIC_ALLOCATOR
  748. select ARCH_HAS_HOLES_MEMORYMODEL
  749. help
  750. Support for TI's DaVinci platform.
  751. config ARCH_OMAP
  752. bool "TI OMAP"
  753. select HAVE_CLK
  754. select ARCH_REQUIRE_GPIOLIB
  755. select ARCH_HAS_CPUFREQ
  756. select GENERIC_CLOCKEVENTS
  757. select HAVE_SCHED_CLOCK
  758. select ARCH_HAS_HOLES_MEMORYMODEL
  759. help
  760. Support for TI's OMAP platform (OMAP1/2/3/4).
  761. config PLAT_SPEAR
  762. bool "ST SPEAr"
  763. select ARM_AMBA
  764. select ARCH_REQUIRE_GPIOLIB
  765. select CLKDEV_LOOKUP
  766. select GENERIC_CLOCKEVENTS
  767. select HAVE_CLK
  768. help
  769. Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
  770. endchoice
  771. #
  772. # This is sorted alphabetically by mach-* pathname. However, plat-*
  773. # Kconfigs may be included either alphabetically (according to the
  774. # plat- suffix) or along side the corresponding mach-* source.
  775. #
  776. source "arch/arm/mach-aaec2000/Kconfig"
  777. source "arch/arm/mach-at91/Kconfig"
  778. source "arch/arm/mach-bcmring/Kconfig"
  779. source "arch/arm/mach-clps711x/Kconfig"
  780. source "arch/arm/mach-cns3xxx/Kconfig"
  781. source "arch/arm/mach-davinci/Kconfig"
  782. source "arch/arm/mach-dove/Kconfig"
  783. source "arch/arm/mach-ep93xx/Kconfig"
  784. source "arch/arm/mach-footbridge/Kconfig"
  785. source "arch/arm/mach-gemini/Kconfig"
  786. source "arch/arm/mach-h720x/Kconfig"
  787. source "arch/arm/mach-integrator/Kconfig"
  788. source "arch/arm/mach-iop32x/Kconfig"
  789. source "arch/arm/mach-iop33x/Kconfig"
  790. source "arch/arm/mach-iop13xx/Kconfig"
  791. source "arch/arm/mach-ixp4xx/Kconfig"
  792. source "arch/arm/mach-ixp2000/Kconfig"
  793. source "arch/arm/mach-ixp23xx/Kconfig"
  794. source "arch/arm/mach-kirkwood/Kconfig"
  795. source "arch/arm/mach-ks8695/Kconfig"
  796. source "arch/arm/mach-lh7a40x/Kconfig"
  797. source "arch/arm/mach-loki/Kconfig"
  798. source "arch/arm/mach-lpc32xx/Kconfig"
  799. source "arch/arm/mach-msm/Kconfig"
  800. source "arch/arm/mach-mv78xx0/Kconfig"
  801. source "arch/arm/plat-mxc/Kconfig"
  802. source "arch/arm/mach-mxs/Kconfig"
  803. source "arch/arm/mach-netx/Kconfig"
  804. source "arch/arm/mach-nomadik/Kconfig"
  805. source "arch/arm/plat-nomadik/Kconfig"
  806. source "arch/arm/mach-ns9xxx/Kconfig"
  807. source "arch/arm/mach-nuc93x/Kconfig"
  808. source "arch/arm/plat-omap/Kconfig"
  809. source "arch/arm/mach-omap1/Kconfig"
  810. source "arch/arm/mach-omap2/Kconfig"
  811. source "arch/arm/mach-orion5x/Kconfig"
  812. source "arch/arm/mach-pxa/Kconfig"
  813. source "arch/arm/plat-pxa/Kconfig"
  814. source "arch/arm/mach-mmp/Kconfig"
  815. source "arch/arm/mach-realview/Kconfig"
  816. source "arch/arm/mach-sa1100/Kconfig"
  817. source "arch/arm/plat-samsung/Kconfig"
  818. source "arch/arm/plat-s3c24xx/Kconfig"
  819. source "arch/arm/plat-s5p/Kconfig"
  820. source "arch/arm/plat-spear/Kconfig"
  821. source "arch/arm/plat-tcc/Kconfig"
  822. if ARCH_S3C2410
  823. source "arch/arm/mach-s3c2400/Kconfig"
  824. source "arch/arm/mach-s3c2410/Kconfig"
  825. source "arch/arm/mach-s3c2412/Kconfig"
  826. source "arch/arm/mach-s3c2416/Kconfig"
  827. source "arch/arm/mach-s3c2440/Kconfig"
  828. source "arch/arm/mach-s3c2443/Kconfig"
  829. endif
  830. if ARCH_S3C64XX
  831. source "arch/arm/mach-s3c64xx/Kconfig"
  832. endif
  833. source "arch/arm/mach-s5p64x0/Kconfig"
  834. source "arch/arm/mach-s5p6442/Kconfig"
  835. source "arch/arm/mach-s5pc100/Kconfig"
  836. source "arch/arm/mach-s5pv210/Kconfig"
  837. source "arch/arm/mach-s5pv310/Kconfig"
  838. source "arch/arm/mach-shmobile/Kconfig"
  839. source "arch/arm/plat-stmp3xxx/Kconfig"
  840. source "arch/arm/mach-tegra/Kconfig"
  841. source "arch/arm/mach-u300/Kconfig"
  842. source "arch/arm/mach-ux500/Kconfig"
  843. source "arch/arm/mach-versatile/Kconfig"
  844. source "arch/arm/mach-vexpress/Kconfig"
  845. source "arch/arm/mach-w90x900/Kconfig"
  846. # Definitions to make life easier
  847. config ARCH_ACORN
  848. bool
  849. config PLAT_IOP
  850. bool
  851. select GENERIC_CLOCKEVENTS
  852. select HAVE_SCHED_CLOCK
  853. config PLAT_ORION
  854. bool
  855. select HAVE_SCHED_CLOCK
  856. config PLAT_PXA
  857. bool
  858. config PLAT_VERSATILE
  859. bool
  860. config ARM_TIMER_SP804
  861. bool
  862. source arch/arm/mm/Kconfig
  863. config IWMMXT
  864. bool "Enable iWMMXt support"
  865. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
  866. default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
  867. help
  868. Enable support for iWMMXt context switching at run time if
  869. running on a CPU that supports it.
  870. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  871. config XSCALE_PMU
  872. bool
  873. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  874. default y
  875. config CPU_HAS_PMU
  876. depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
  877. (!ARCH_OMAP3 || OMAP3_EMU)
  878. default y
  879. bool
  880. config MULTI_IRQ_HANDLER
  881. bool
  882. help
  883. Allow each machine to specify it's own IRQ handler at run time.
  884. if !MMU
  885. source "arch/arm/Kconfig-nommu"
  886. endif
  887. config ARM_ERRATA_411920
  888. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  889. depends on CPU_V6
  890. help
  891. Invalidation of the Instruction Cache operation can
  892. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  893. It does not affect the MPCore. This option enables the ARM Ltd.
  894. recommended workaround.
  895. config ARM_ERRATA_430973
  896. bool "ARM errata: Stale prediction on replaced interworking branch"
  897. depends on CPU_V7
  898. help
  899. This option enables the workaround for the 430973 Cortex-A8
  900. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  901. interworking branch is replaced with another code sequence at the
  902. same virtual address, whether due to self-modifying code or virtual
  903. to physical address re-mapping, Cortex-A8 does not recover from the
  904. stale interworking branch prediction. This results in Cortex-A8
  905. executing the new code sequence in the incorrect ARM or Thumb state.
  906. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  907. and also flushes the branch target cache at every context switch.
  908. Note that setting specific bits in the ACTLR register may not be
  909. available in non-secure mode.
  910. config ARM_ERRATA_458693
  911. bool "ARM errata: Processor deadlock when a false hazard is created"
  912. depends on CPU_V7
  913. help
  914. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  915. erratum. For very specific sequences of memory operations, it is
  916. possible for a hazard condition intended for a cache line to instead
  917. be incorrectly associated with a different cache line. This false
  918. hazard might then cause a processor deadlock. The workaround enables
  919. the L1 caching of the NEON accesses and disables the PLD instruction
  920. in the ACTLR register. Note that setting specific bits in the ACTLR
  921. register may not be available in non-secure mode.
  922. config ARM_ERRATA_460075
  923. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  924. depends on CPU_V7
  925. help
  926. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  927. erratum. Any asynchronous access to the L2 cache may encounter a
  928. situation in which recent store transactions to the L2 cache are lost
  929. and overwritten with stale memory contents from external memory. The
  930. workaround disables the write-allocate mode for the L2 cache via the
  931. ACTLR register. Note that setting specific bits in the ACTLR register
  932. may not be available in non-secure mode.
  933. config ARM_ERRATA_742230
  934. bool "ARM errata: DMB operation may be faulty"
  935. depends on CPU_V7 && SMP
  936. help
  937. This option enables the workaround for the 742230 Cortex-A9
  938. (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
  939. between two write operations may not ensure the correct visibility
  940. ordering of the two writes. This workaround sets a specific bit in
  941. the diagnostic register of the Cortex-A9 which causes the DMB
  942. instruction to behave as a DSB, ensuring the correct behaviour of
  943. the two writes.
  944. config ARM_ERRATA_742231
  945. bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
  946. depends on CPU_V7 && SMP
  947. help
  948. This option enables the workaround for the 742231 Cortex-A9
  949. (r2p0..r2p2) erratum. Under certain conditions, specific to the
  950. Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
  951. accessing some data located in the same cache line, may get corrupted
  952. data due to bad handling of the address hazard when the line gets
  953. replaced from one of the CPUs at the same time as another CPU is
  954. accessing it. This workaround sets specific bits in the diagnostic
  955. register of the Cortex-A9 which reduces the linefill issuing
  956. capabilities of the processor.
  957. config PL310_ERRATA_588369
  958. bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
  959. depends on CACHE_L2X0 && ARCH_OMAP4
  960. help
  961. The PL310 L2 cache controller implements three types of Clean &
  962. Invalidate maintenance operations: by Physical Address
  963. (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
  964. They are architecturally defined to behave as the execution of a
  965. clean operation followed immediately by an invalidate operation,
  966. both performing to the same memory location. This functionality
  967. is not correctly implemented in PL310 as clean lines are not
  968. invalidated as a result of these operations. Note that this errata
  969. uses Texas Instrument's secure monitor api.
  970. config ARM_ERRATA_720789
  971. bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
  972. depends on CPU_V7 && SMP
  973. help
  974. This option enables the workaround for the 720789 Cortex-A9 (prior to
  975. r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
  976. broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
  977. As a consequence of this erratum, some TLB entries which should be
  978. invalidated are not, resulting in an incoherency in the system page
  979. tables. The workaround changes the TLB flushing routines to invalidate
  980. entries regardless of the ASID.
  981. config ARM_ERRATA_743622
  982. bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
  983. depends on CPU_V7
  984. help
  985. This option enables the workaround for the 743622 Cortex-A9
  986. (r2p0..r2p2) erratum. Under very rare conditions, a faulty
  987. optimisation in the Cortex-A9 Store Buffer may lead to data
  988. corruption. This workaround sets a specific bit in the diagnostic
  989. register of the Cortex-A9 which disables the Store Buffer
  990. optimisation, preventing the defect from occurring. This has no
  991. visible impact on the overall performance or power consumption of the
  992. processor.
  993. endmenu
  994. source "arch/arm/common/Kconfig"
  995. menu "Bus support"
  996. config ARM_AMBA
  997. bool
  998. config ISA
  999. bool
  1000. help
  1001. Find out whether you have ISA slots on your motherboard. ISA is the
  1002. name of a bus system, i.e. the way the CPU talks to the other stuff
  1003. inside your box. Other bus systems are PCI, EISA, MicroChannel
  1004. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  1005. newer boards don't support it. If you have ISA, say Y, otherwise N.
  1006. # Select ISA DMA controller support
  1007. config ISA_DMA
  1008. bool
  1009. select ISA_DMA_API
  1010. # Select ISA DMA interface
  1011. config ISA_DMA_API
  1012. bool
  1013. config PCI
  1014. bool "PCI support" if MIGHT_HAVE_PCI
  1015. help
  1016. Find out whether you have a PCI motherboard. PCI is the name of a
  1017. bus system, i.e. the way the CPU talks to the other stuff inside
  1018. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  1019. VESA. If you have PCI, say Y, otherwise N.
  1020. config PCI_DOMAINS
  1021. bool
  1022. depends on PCI
  1023. config PCI_NANOENGINE
  1024. bool "BSE nanoEngine PCI support"
  1025. depends on SA1100_NANOENGINE
  1026. help
  1027. Enable PCI on the BSE nanoEngine board.
  1028. config PCI_SYSCALL
  1029. def_bool PCI
  1030. # Select the host bridge type
  1031. config PCI_HOST_VIA82C505
  1032. bool
  1033. depends on PCI && ARCH_SHARK
  1034. default y
  1035. config PCI_HOST_ITE8152
  1036. bool
  1037. depends on PCI && MACH_ARMCORE
  1038. default y
  1039. select DMABOUNCE
  1040. source "drivers/pci/Kconfig"
  1041. source "drivers/pcmcia/Kconfig"
  1042. endmenu
  1043. menu "Kernel Features"
  1044. source "kernel/time/Kconfig"
  1045. config SMP
  1046. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  1047. depends on EXPERIMENTAL
  1048. depends on GENERIC_CLOCKEVENTS
  1049. depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
  1050. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
  1051. ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
  1052. ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE
  1053. select USE_GENERIC_SMP_HELPERS
  1054. select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
  1055. help
  1056. This enables support for systems with more than one CPU. If you have
  1057. a system with only one CPU, like most personal computers, say N. If
  1058. you have a system with more than one CPU, say Y.
  1059. If you say N here, the kernel will run on single and multiprocessor
  1060. machines, but will use only one CPU of a multiprocessor machine. If
  1061. you say Y here, the kernel will run on many, but not all, single
  1062. processor machines. On a single processor machine, the kernel will
  1063. run faster if you say N here.
  1064. See also <file:Documentation/i386/IO-APIC.txt>,
  1065. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  1066. <http://tldp.org/HOWTO/SMP-HOWTO.html>.
  1067. If you don't know what to do here, say N.
  1068. config SMP_ON_UP
  1069. bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
  1070. depends on EXPERIMENTAL
  1071. depends on SMP && !XIP
  1072. default y
  1073. help
  1074. SMP kernels contain instructions which fail on non-SMP processors.
  1075. Enabling this option allows the kernel to modify itself to make
  1076. these instructions safe. Disabling it allows about 1K of space
  1077. savings.
  1078. If you don't know what to do here, say Y.
  1079. config HAVE_ARM_SCU
  1080. bool
  1081. depends on SMP
  1082. help
  1083. This option enables support for the ARM system coherency unit
  1084. config HAVE_ARM_TWD
  1085. bool
  1086. depends on SMP
  1087. select TICK_ONESHOT
  1088. help
  1089. This options enables support for the ARM timer and watchdog unit
  1090. choice
  1091. prompt "Memory split"
  1092. default VMSPLIT_3G
  1093. help
  1094. Select the desired split between kernel and user memory.
  1095. If you are not absolutely sure what you are doing, leave this
  1096. option alone!
  1097. config VMSPLIT_3G
  1098. bool "3G/1G user/kernel split"
  1099. config VMSPLIT_2G
  1100. bool "2G/2G user/kernel split"
  1101. config VMSPLIT_1G
  1102. bool "1G/3G user/kernel split"
  1103. endchoice
  1104. config PAGE_OFFSET
  1105. hex
  1106. default 0x40000000 if VMSPLIT_1G
  1107. default 0x80000000 if VMSPLIT_2G
  1108. default 0xC0000000
  1109. config NR_CPUS
  1110. int "Maximum number of CPUs (2-32)"
  1111. range 2 32
  1112. depends on SMP
  1113. default "4"
  1114. config HOTPLUG_CPU
  1115. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  1116. depends on SMP && HOTPLUG && EXPERIMENTAL
  1117. depends on !ARCH_MSM
  1118. help
  1119. Say Y here to experiment with turning CPUs off and on. CPUs
  1120. can be controlled through /sys/devices/system/cpu.
  1121. config LOCAL_TIMERS
  1122. bool "Use local timer interrupts"
  1123. depends on SMP
  1124. default y
  1125. select HAVE_ARM_TWD if !ARCH_MSM_SCORPIONMP
  1126. help
  1127. Enable support for local timers on SMP platforms, rather then the
  1128. legacy IPI broadcast method. Local timers allows the system
  1129. accounting to be spread across the timer interval, preventing a
  1130. "thundering herd" at every timer tick.
  1131. source kernel/Kconfig.preempt
  1132. config HZ
  1133. int
  1134. default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
  1135. ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
  1136. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  1137. default AT91_TIMER_HZ if ARCH_AT91
  1138. default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
  1139. default 100
  1140. config THUMB2_KERNEL
  1141. bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
  1142. depends on CPU_V7 && !CPU_V6 && EXPERIMENTAL
  1143. select AEABI
  1144. select ARM_ASM_UNIFIED
  1145. help
  1146. By enabling this option, the kernel will be compiled in
  1147. Thumb-2 mode. A compiler/assembler that understand the unified
  1148. ARM-Thumb syntax is needed.
  1149. If unsure, say N.
  1150. config ARM_ASM_UNIFIED
  1151. bool
  1152. config AEABI
  1153. bool "Use the ARM EABI to compile the kernel"
  1154. help
  1155. This option allows for the kernel to be compiled using the latest
  1156. ARM ABI (aka EABI). This is only useful if you are using a user
  1157. space environment that is also compiled with EABI.
  1158. Since there are major incompatibilities between the legacy ABI and
  1159. EABI, especially with regard to structure member alignment, this
  1160. option also changes the kernel syscall calling convention to
  1161. disambiguate both ABIs and allow for backward compatibility support
  1162. (selected with CONFIG_OABI_COMPAT).
  1163. To use this you need GCC version 4.0.0 or later.
  1164. config OABI_COMPAT
  1165. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  1166. depends on AEABI && EXPERIMENTAL
  1167. default y
  1168. help
  1169. This option preserves the old syscall interface along with the
  1170. new (ARM EABI) one. It also provides a compatibility layer to
  1171. intercept syscalls that have structure arguments which layout
  1172. in memory differs between the legacy ABI and the new ARM EABI
  1173. (only for non "thumb" binaries). This option adds a tiny
  1174. overhead to all syscalls and produces a slightly larger kernel.
  1175. If you know you'll be using only pure EABI user space then you
  1176. can say N here. If this option is not selected and you attempt
  1177. to execute a legacy ABI binary then the result will be
  1178. UNPREDICTABLE (in fact it can be predicted that it won't work
  1179. at all). If in doubt say Y.
  1180. config ARCH_HAS_HOLES_MEMORYMODEL
  1181. bool
  1182. config ARCH_SPARSEMEM_ENABLE
  1183. bool
  1184. config ARCH_SPARSEMEM_DEFAULT
  1185. def_bool ARCH_SPARSEMEM_ENABLE
  1186. config ARCH_SELECT_MEMORY_MODEL
  1187. def_bool ARCH_SPARSEMEM_ENABLE
  1188. config HIGHMEM
  1189. bool "High Memory Support (EXPERIMENTAL)"
  1190. depends on MMU && EXPERIMENTAL
  1191. help
  1192. The address space of ARM processors is only 4 Gigabytes large
  1193. and it has to accommodate user address space, kernel address
  1194. space as well as some memory mapped IO. That means that, if you
  1195. have a large amount of physical memory and/or IO, not all of the
  1196. memory can be "permanently mapped" by the kernel. The physical
  1197. memory that is not permanently mapped is called "high memory".
  1198. Depending on the selected kernel/user memory split, minimum
  1199. vmalloc space and actual amount of RAM, you may not need this
  1200. option which should result in a slightly faster kernel.
  1201. If unsure, say n.
  1202. config HIGHPTE
  1203. bool "Allocate 2nd-level pagetables from highmem"
  1204. depends on HIGHMEM
  1205. depends on !OUTER_CACHE
  1206. config HW_PERF_EVENTS
  1207. bool "Enable hardware performance counter support for perf events"
  1208. depends on PERF_EVENTS && CPU_HAS_PMU
  1209. default y
  1210. help
  1211. Enable hardware performance counter support for perf events. If
  1212. disabled, perf events will use software events only.
  1213. source "mm/Kconfig"
  1214. config FORCE_MAX_ZONEORDER
  1215. int "Maximum zone order" if ARCH_SHMOBILE
  1216. range 11 64 if ARCH_SHMOBILE
  1217. default "9" if SA1111
  1218. default "11"
  1219. help
  1220. The kernel memory allocator divides physically contiguous memory
  1221. blocks into "zones", where each zone is a power of two number of
  1222. pages. This option selects the largest power of two that the kernel
  1223. keeps in the memory allocator. If you need to allocate very large
  1224. blocks of physically contiguous memory, then you may need to
  1225. increase this value.
  1226. This config option is actually maximum order plus one. For example,
  1227. a value of 11 means that the largest free memory block is 2^10 pages.
  1228. config LEDS
  1229. bool "Timer and CPU usage LEDs"
  1230. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  1231. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  1232. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  1233. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  1234. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  1235. ARCH_AT91 || ARCH_DAVINCI || \
  1236. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  1237. help
  1238. If you say Y here, the LEDs on your machine will be used
  1239. to provide useful information about your current system status.
  1240. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  1241. be able to select which LEDs are active using the options below. If
  1242. you are compiling a kernel for the EBSA-110 or the LART however, the
  1243. red LED will simply flash regularly to indicate that the system is
  1244. still functional. It is safe to say Y here if you have a CATS
  1245. system, but the driver will do nothing.
  1246. config LEDS_TIMER
  1247. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  1248. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1249. || MACH_OMAP_PERSEUS2
  1250. depends on LEDS
  1251. depends on !GENERIC_CLOCKEVENTS
  1252. default y if ARCH_EBSA110
  1253. help
  1254. If you say Y here, one of the system LEDs (the green one on the
  1255. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1256. will flash regularly to indicate that the system is still
  1257. operational. This is mainly useful to kernel hackers who are
  1258. debugging unstable kernels.
  1259. The LART uses the same LED for both Timer LED and CPU usage LED
  1260. functions. You may choose to use both, but the Timer LED function
  1261. will overrule the CPU usage LED.
  1262. config LEDS_CPU
  1263. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1264. !ARCH_OMAP) \
  1265. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1266. || MACH_OMAP_PERSEUS2
  1267. depends on LEDS
  1268. help
  1269. If you say Y here, the red LED will be used to give a good real
  1270. time indication of CPU usage, by lighting whenever the idle task
  1271. is not currently executing.
  1272. The LART uses the same LED for both Timer LED and CPU usage LED
  1273. functions. You may choose to use both, but the Timer LED function
  1274. will overrule the CPU usage LED.
  1275. config ALIGNMENT_TRAP
  1276. bool
  1277. depends on CPU_CP15_MMU
  1278. default y if !ARCH_EBSA110
  1279. select HAVE_PROC_CPU if PROC_FS
  1280. help
  1281. ARM processors cannot fetch/store information which is not
  1282. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1283. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1284. fetch/store instructions will be emulated in software if you say
  1285. here, which has a severe performance impact. This is necessary for
  1286. correct operation of some network protocols. With an IP-only
  1287. configuration it is safe to say N, otherwise say Y.
  1288. config UACCESS_WITH_MEMCPY
  1289. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1290. depends on MMU && EXPERIMENTAL
  1291. default y if CPU_FEROCEON
  1292. help
  1293. Implement faster copy_to_user and clear_user methods for CPU
  1294. cores where a 8-word STM instruction give significantly higher
  1295. memory write throughput than a sequence of individual 32bit stores.
  1296. A possible side effect is a slight increase in scheduling latency
  1297. between threads sharing the same address space if they invoke
  1298. such copy operations with large buffers.
  1299. However, if the CPU data cache is using a write-allocate mode,
  1300. this option is unlikely to provide any performance gain.
  1301. config SECCOMP
  1302. bool
  1303. prompt "Enable seccomp to safely compute untrusted bytecode"
  1304. ---help---
  1305. This kernel feature is useful for number crunching applications
  1306. that may need to compute untrusted bytecode during their
  1307. execution. By using pipes or other transports made available to
  1308. the process as file descriptors supporting the read/write
  1309. syscalls, it's possible to isolate those applications in
  1310. their own address space using seccomp. Once seccomp is
  1311. enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
  1312. and the task is only allowed to execute a few safe syscalls
  1313. defined by each seccomp mode.
  1314. config CC_STACKPROTECTOR
  1315. bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
  1316. depends on EXPERIMENTAL
  1317. help
  1318. This option turns on the -fstack-protector GCC feature. This
  1319. feature puts, at the beginning of functions, a canary value on
  1320. the stack just before the return address, and validates
  1321. the value just before actually returning. Stack based buffer
  1322. overflows (that need to overwrite this return address) now also
  1323. overwrite the canary, which gets detected and the attack is then
  1324. neutralized via a kernel panic.
  1325. This feature requires gcc version 4.2 or above.
  1326. config DEPRECATED_PARAM_STRUCT
  1327. bool "Provide old way to pass kernel parameters"
  1328. help
  1329. This was deprecated in 2001 and announced to live on for 5 years.
  1330. Some old boot loaders still use this way.
  1331. endmenu
  1332. menu "Boot options"
  1333. # Compressed boot loader in ROM. Yes, we really want to ask about
  1334. # TEXT and BSS so we preserve their values in the config files.
  1335. config ZBOOT_ROM_TEXT
  1336. hex "Compressed ROM boot loader base address"
  1337. default "0"
  1338. help
  1339. The physical address at which the ROM-able zImage is to be
  1340. placed in the target. Platforms which normally make use of
  1341. ROM-able zImage formats normally set this to a suitable
  1342. value in their defconfig file.
  1343. If ZBOOT_ROM is not enabled, this has no effect.
  1344. config ZBOOT_ROM_BSS
  1345. hex "Compressed ROM boot loader BSS address"
  1346. default "0"
  1347. help
  1348. The base address of an area of read/write memory in the target
  1349. for the ROM-able zImage which must be available while the
  1350. decompressor is running. It must be large enough to hold the
  1351. entire decompressed kernel plus an additional 128 KiB.
  1352. Platforms which normally make use of ROM-able zImage formats
  1353. normally set this to a suitable value in their defconfig file.
  1354. If ZBOOT_ROM is not enabled, this has no effect.
  1355. config ZBOOT_ROM
  1356. bool "Compressed boot loader in ROM/flash"
  1357. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1358. help
  1359. Say Y here if you intend to execute your compressed kernel image
  1360. (zImage) directly from ROM or flash. If unsure, say N.
  1361. config CMDLINE
  1362. string "Default kernel command string"
  1363. default ""
  1364. help
  1365. On some architectures (EBSA110 and CATS), there is currently no way
  1366. for the boot loader to pass arguments to the kernel. For these
  1367. architectures, you should supply some command-line options at build
  1368. time by entering them here. As a minimum, you should specify the
  1369. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1370. config CMDLINE_FORCE
  1371. bool "Always use the default kernel command string"
  1372. depends on CMDLINE != ""
  1373. help
  1374. Always use the default kernel command string, even if the boot
  1375. loader passes other arguments to the kernel.
  1376. This is useful if you cannot or don't want to change the
  1377. command-line options your boot loader passes to the kernel.
  1378. If unsure, say N.
  1379. config XIP_KERNEL
  1380. bool "Kernel Execute-In-Place from ROM"
  1381. depends on !ZBOOT_ROM
  1382. help
  1383. Execute-In-Place allows the kernel to run from non-volatile storage
  1384. directly addressable by the CPU, such as NOR flash. This saves RAM
  1385. space since the text section of the kernel is not loaded from flash
  1386. to RAM. Read-write sections, such as the data section and stack,
  1387. are still copied to RAM. The XIP kernel is not compressed since
  1388. it has to run directly from flash, so it will take more space to
  1389. store it. The flash address used to link the kernel object files,
  1390. and for storing it, is configuration dependent. Therefore, if you
  1391. say Y here, you must know the proper physical address where to
  1392. store the kernel image depending on your own flash memory usage.
  1393. Also note that the make target becomes "make xipImage" rather than
  1394. "make zImage" or "make Image". The final kernel binary to put in
  1395. ROM memory will be arch/arm/boot/xipImage.
  1396. If unsure, say N.
  1397. config XIP_PHYS_ADDR
  1398. hex "XIP Kernel Physical Location"
  1399. depends on XIP_KERNEL
  1400. default "0x00080000"
  1401. help
  1402. This is the physical address in your flash memory the kernel will
  1403. be linked for and stored to. This address is dependent on your
  1404. own flash usage.
  1405. config KEXEC
  1406. bool "Kexec system call (EXPERIMENTAL)"
  1407. depends on EXPERIMENTAL
  1408. help
  1409. kexec is a system call that implements the ability to shutdown your
  1410. current kernel, and to start another kernel. It is like a reboot
  1411. but it is independent of the system firmware. And like a reboot
  1412. you can start any kernel with it, not just Linux.
  1413. It is an ongoing process to be certain the hardware in a machine
  1414. is properly shutdown, so do not be surprised if this code does not
  1415. initially work for you. It may help to enable device hotplugging
  1416. support.
  1417. config ATAGS_PROC
  1418. bool "Export atags in procfs"
  1419. depends on KEXEC
  1420. default y
  1421. help
  1422. Should the atags used to boot the kernel be exported in an "atags"
  1423. file in procfs. Useful with kexec.
  1424. config CRASH_DUMP
  1425. bool "Build kdump crash kernel (EXPERIMENTAL)"
  1426. depends on EXPERIMENTAL
  1427. help
  1428. Generate crash dump after being started by kexec. This should
  1429. be normally only set in special crash dump kernels which are
  1430. loaded in the main kernel with kexec-tools into a specially
  1431. reserved region and then later executed after a crash by
  1432. kdump/kexec. The crash dump kernel must be compiled to a
  1433. memory address not used by the main kernel
  1434. For more details see Documentation/kdump/kdump.txt
  1435. config AUTO_ZRELADDR
  1436. bool "Auto calculation of the decompressed kernel image address"
  1437. depends on !ZBOOT_ROM && !ARCH_U300
  1438. help
  1439. ZRELADDR is the physical address where the decompressed kernel
  1440. image will be placed. If AUTO_ZRELADDR is selected, the address
  1441. will be determined at run-time by masking the current IP with
  1442. 0xf8000000. This assumes the zImage being placed in the first 128MB
  1443. from start of memory.
  1444. endmenu
  1445. menu "CPU Power Management"
  1446. if ARCH_HAS_CPUFREQ
  1447. source "drivers/cpufreq/Kconfig"
  1448. config CPU_FREQ_IMX
  1449. tristate "CPUfreq driver for i.MX CPUs"
  1450. depends on ARCH_MXC && CPU_FREQ
  1451. help
  1452. This enables the CPUfreq driver for i.MX CPUs.
  1453. config CPU_FREQ_SA1100
  1454. bool
  1455. config CPU_FREQ_SA1110
  1456. bool
  1457. config CPU_FREQ_INTEGRATOR
  1458. tristate "CPUfreq driver for ARM Integrator CPUs"
  1459. depends on ARCH_INTEGRATOR && CPU_FREQ
  1460. default y
  1461. help
  1462. This enables the CPUfreq driver for ARM Integrator CPUs.
  1463. For details, take a look at <file:Documentation/cpu-freq>.
  1464. If in doubt, say Y.
  1465. config CPU_FREQ_PXA
  1466. bool
  1467. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1468. default y
  1469. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1470. config CPU_FREQ_S3C64XX
  1471. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1472. depends on CPU_FREQ && CPU_S3C6410
  1473. config CPU_FREQ_S3C
  1474. bool
  1475. help
  1476. Internal configuration node for common cpufreq on Samsung SoC
  1477. config CPU_FREQ_S3C24XX
  1478. bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
  1479. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1480. select CPU_FREQ_S3C
  1481. help
  1482. This enables the CPUfreq driver for the Samsung S3C24XX family
  1483. of CPUs.
  1484. For details, take a look at <file:Documentation/cpu-freq>.
  1485. If in doubt, say N.
  1486. config CPU_FREQ_S3C24XX_PLL
  1487. bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
  1488. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1489. help
  1490. Compile in support for changing the PLL frequency from the
  1491. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1492. after a frequency change, so by default it is not enabled.
  1493. This also means that the PLL tables for the selected CPU(s) will
  1494. be built which may increase the size of the kernel image.
  1495. config CPU_FREQ_S3C24XX_DEBUG
  1496. bool "Debug CPUfreq Samsung driver core"
  1497. depends on CPU_FREQ_S3C24XX
  1498. help
  1499. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1500. config CPU_FREQ_S3C24XX_IODEBUG
  1501. bool "Debug CPUfreq Samsung driver IO timing"
  1502. depends on CPU_FREQ_S3C24XX
  1503. help
  1504. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1505. config CPU_FREQ_S3C24XX_DEBUGFS
  1506. bool "Export debugfs for CPUFreq"
  1507. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1508. help
  1509. Export status information via debugfs.
  1510. endif
  1511. source "drivers/cpuidle/Kconfig"
  1512. endmenu
  1513. menu "Floating point emulation"
  1514. comment "At least one emulation must be selected"
  1515. config FPE_NWFPE
  1516. bool "NWFPE math emulation"
  1517. depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
  1518. ---help---
  1519. Say Y to include the NWFPE floating point emulator in the kernel.
  1520. This is necessary to run most binaries. Linux does not currently
  1521. support floating point hardware so you need to say Y here even if
  1522. your machine has an FPA or floating point co-processor podule.
  1523. You may say N here if you are going to load the Acorn FPEmulator
  1524. early in the bootup.
  1525. config FPE_NWFPE_XP
  1526. bool "Support extended precision"
  1527. depends on FPE_NWFPE
  1528. help
  1529. Say Y to include 80-bit support in the kernel floating-point
  1530. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1531. Note that gcc does not generate 80-bit operations by default,
  1532. so in most cases this option only enlarges the size of the
  1533. floating point emulator without any good reason.
  1534. You almost surely want to say N here.
  1535. config FPE_FASTFPE
  1536. bool "FastFPE math emulation (EXPERIMENTAL)"
  1537. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1538. ---help---
  1539. Say Y here to include the FAST floating point emulator in the kernel.
  1540. This is an experimental much faster emulator which now also has full
  1541. precision for the mantissa. It does not support any exceptions.
  1542. It is very simple, and approximately 3-6 times faster than NWFPE.
  1543. It should be sufficient for most programs. It may be not suitable
  1544. for scientific calculations, but you have to check this for yourself.
  1545. If you do not feel you need a faster FP emulation you should better
  1546. choose NWFPE.
  1547. config VFP
  1548. bool "VFP-format floating point maths"
  1549. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1550. help
  1551. Say Y to include VFP support code in the kernel. This is needed
  1552. if your hardware includes a VFP unit.
  1553. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1554. release notes and additional status information.
  1555. Say N if your target does not have VFP hardware.
  1556. config VFPv3
  1557. bool
  1558. depends on VFP
  1559. default y if CPU_V7
  1560. config NEON
  1561. bool "Advanced SIMD (NEON) Extension support"
  1562. depends on VFPv3 && CPU_V7
  1563. help
  1564. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1565. Extension.
  1566. endmenu
  1567. menu "Userspace binary formats"
  1568. source "fs/Kconfig.binfmt"
  1569. config ARTHUR
  1570. tristate "RISC OS personality"
  1571. depends on !AEABI
  1572. help
  1573. Say Y here to include the kernel code necessary if you want to run
  1574. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1575. experimental; if this sounds frightening, say N and sleep in peace.
  1576. You can also say M here to compile this support as a module (which
  1577. will be called arthur).
  1578. endmenu
  1579. menu "Power management options"
  1580. source "kernel/power/Kconfig"
  1581. config ARCH_SUSPEND_POSSIBLE
  1582. def_bool y
  1583. endmenu
  1584. source "net/Kconfig"
  1585. source "drivers/Kconfig"
  1586. source "fs/Kconfig"
  1587. source "arch/arm/Kconfig.debug"
  1588. source "security/Kconfig"
  1589. source "crypto/Kconfig"
  1590. source "lib/Kconfig"