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. select PLAT_VERSATILE_FPGA_IRQ
  186. help
  187. Support for ARM's Integrator platform.
  188. config ARCH_REALVIEW
  189. bool "ARM Ltd. RealView family"
  190. select ARM_AMBA
  191. select CLKDEV_LOOKUP
  192. select ICST
  193. select GENERIC_CLOCKEVENTS
  194. select ARCH_WANT_OPTIONAL_GPIOLIB
  195. select PLAT_VERSATILE
  196. select PLAT_VERSATILE_CLCD
  197. select ARM_TIMER_SP804
  198. select GPIO_PL061 if GPIOLIB
  199. help
  200. This enables support for ARM Ltd RealView boards.
  201. config ARCH_VERSATILE
  202. bool "ARM Ltd. Versatile family"
  203. select ARM_AMBA
  204. select ARM_VIC
  205. select CLKDEV_LOOKUP
  206. select ICST
  207. select GENERIC_CLOCKEVENTS
  208. select ARCH_WANT_OPTIONAL_GPIOLIB
  209. select PLAT_VERSATILE
  210. select PLAT_VERSATILE_CLCD
  211. select PLAT_VERSATILE_FPGA_IRQ
  212. select ARM_TIMER_SP804
  213. help
  214. This enables support for ARM Ltd Versatile board.
  215. config ARCH_VEXPRESS
  216. bool "ARM Ltd. Versatile Express family"
  217. select ARCH_WANT_OPTIONAL_GPIOLIB
  218. select ARM_AMBA
  219. select ARM_TIMER_SP804
  220. select CLKDEV_LOOKUP
  221. select GENERIC_CLOCKEVENTS
  222. select HAVE_CLK
  223. select HAVE_PATA_PLATFORM
  224. select ICST
  225. select PLAT_VERSATILE
  226. select PLAT_VERSATILE_CLCD
  227. help
  228. This enables support for the ARM Ltd Versatile Express boards.
  229. config ARCH_AT91
  230. bool "Atmel AT91"
  231. select ARCH_REQUIRE_GPIOLIB
  232. select HAVE_CLK
  233. help
  234. This enables support for systems based on the Atmel AT91RM9200,
  235. AT91SAM9 and AT91CAP9 processors.
  236. config ARCH_BCMRING
  237. bool "Broadcom BCMRING"
  238. depends on MMU
  239. select CPU_V6
  240. select ARM_AMBA
  241. select CLKDEV_LOOKUP
  242. select GENERIC_CLOCKEVENTS
  243. select ARCH_WANT_OPTIONAL_GPIOLIB
  244. help
  245. Support for Broadcom's BCMRing platform.
  246. config ARCH_CLPS711X
  247. bool "Cirrus Logic CLPS711x/EP721x-based"
  248. select CPU_ARM720T
  249. select ARCH_USES_GETTIMEOFFSET
  250. help
  251. Support for Cirrus Logic 711x/721x based boards.
  252. config ARCH_CNS3XXX
  253. bool "Cavium Networks CNS3XXX family"
  254. select CPU_V6
  255. select GENERIC_CLOCKEVENTS
  256. select ARM_GIC
  257. select MIGHT_HAVE_PCI
  258. select PCI_DOMAINS if PCI
  259. help
  260. Support for Cavium Networks CNS3XXX platform.
  261. config ARCH_GEMINI
  262. bool "Cortina Systems Gemini"
  263. select CPU_FA526
  264. select ARCH_REQUIRE_GPIOLIB
  265. select ARCH_USES_GETTIMEOFFSET
  266. help
  267. Support for the Cortina Systems Gemini family SoCs
  268. config ARCH_EBSA110
  269. bool "EBSA-110"
  270. select CPU_SA110
  271. select ISA
  272. select NO_IOPORT
  273. select ARCH_USES_GETTIMEOFFSET
  274. help
  275. This is an evaluation board for the StrongARM processor available
  276. from Digital. It has limited hardware on-board, including an
  277. Ethernet interface, two PCMCIA sockets, two serial ports and a
  278. parallel port.
  279. config ARCH_EP93XX
  280. bool "EP93xx-based"
  281. select CPU_ARM920T
  282. select ARM_AMBA
  283. select ARM_VIC
  284. select CLKDEV_LOOKUP
  285. select ARCH_REQUIRE_GPIOLIB
  286. select ARCH_HAS_HOLES_MEMORYMODEL
  287. select ARCH_USES_GETTIMEOFFSET
  288. help
  289. This enables support for the Cirrus EP93xx series of CPUs.
  290. config ARCH_FOOTBRIDGE
  291. bool "FootBridge"
  292. select CPU_SA110
  293. select FOOTBRIDGE
  294. select ARCH_USES_GETTIMEOFFSET
  295. help
  296. Support for systems based on the DC21285 companion chip
  297. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  298. config ARCH_MXC
  299. bool "Freescale MXC/iMX-based"
  300. select GENERIC_CLOCKEVENTS
  301. select ARCH_REQUIRE_GPIOLIB
  302. select CLKDEV_LOOKUP
  303. help
  304. Support for Freescale MXC/iMX-based family of processors
  305. config ARCH_MXS
  306. bool "Freescale MXS-based"
  307. select GENERIC_CLOCKEVENTS
  308. select ARCH_REQUIRE_GPIOLIB
  309. select CLKDEV_LOOKUP
  310. help
  311. Support for Freescale MXS-based family of processors
  312. config ARCH_STMP3XXX
  313. bool "Freescale STMP3xxx"
  314. select CPU_ARM926T
  315. select CLKDEV_LOOKUP
  316. select ARCH_REQUIRE_GPIOLIB
  317. select GENERIC_CLOCKEVENTS
  318. select USB_ARCH_HAS_EHCI
  319. help
  320. Support for systems based on the Freescale 3xxx CPUs.
  321. config ARCH_NETX
  322. bool "Hilscher NetX based"
  323. select CPU_ARM926T
  324. select ARM_VIC
  325. select GENERIC_CLOCKEVENTS
  326. help
  327. This enables support for systems based on the Hilscher NetX Soc
  328. config ARCH_H720X
  329. bool "Hynix HMS720x-based"
  330. select CPU_ARM720T
  331. select ISA_DMA_API
  332. select ARCH_USES_GETTIMEOFFSET
  333. help
  334. This enables support for systems based on the Hynix HMS720x
  335. config ARCH_IOP13XX
  336. bool "IOP13xx-based"
  337. depends on MMU
  338. select CPU_XSC3
  339. select PLAT_IOP
  340. select PCI
  341. select ARCH_SUPPORTS_MSI
  342. select VMSPLIT_1G
  343. help
  344. Support for Intel's IOP13XX (XScale) family of processors.
  345. config ARCH_IOP32X
  346. bool "IOP32x-based"
  347. depends on MMU
  348. select CPU_XSCALE
  349. select PLAT_IOP
  350. select PCI
  351. select ARCH_REQUIRE_GPIOLIB
  352. help
  353. Support for Intel's 80219 and IOP32X (XScale) family of
  354. processors.
  355. config ARCH_IOP33X
  356. bool "IOP33x-based"
  357. depends on MMU
  358. select CPU_XSCALE
  359. select PLAT_IOP
  360. select PCI
  361. select ARCH_REQUIRE_GPIOLIB
  362. help
  363. Support for Intel's IOP33X (XScale) family of processors.
  364. config ARCH_IXP23XX
  365. bool "IXP23XX-based"
  366. depends on MMU
  367. select CPU_XSC3
  368. select PCI
  369. select ARCH_USES_GETTIMEOFFSET
  370. help
  371. Support for Intel's IXP23xx (XScale) family of processors.
  372. config ARCH_IXP2000
  373. bool "IXP2400/2800-based"
  374. depends on MMU
  375. select CPU_XSCALE
  376. select PCI
  377. select ARCH_USES_GETTIMEOFFSET
  378. help
  379. Support for Intel's IXP2400/2800 (XScale) family of processors.
  380. config ARCH_IXP4XX
  381. bool "IXP4xx-based"
  382. depends on MMU
  383. select CPU_XSCALE
  384. select GENERIC_GPIO
  385. select GENERIC_CLOCKEVENTS
  386. select HAVE_SCHED_CLOCK
  387. select MIGHT_HAVE_PCI
  388. select DMABOUNCE if PCI
  389. help
  390. Support for Intel's IXP4XX (XScale) family of processors.
  391. config ARCH_DOVE
  392. bool "Marvell Dove"
  393. select PCI
  394. select ARCH_REQUIRE_GPIOLIB
  395. select GENERIC_CLOCKEVENTS
  396. select PLAT_ORION
  397. help
  398. Support for the Marvell Dove SoC 88AP510
  399. config ARCH_KIRKWOOD
  400. bool "Marvell Kirkwood"
  401. select CPU_FEROCEON
  402. select PCI
  403. select ARCH_REQUIRE_GPIOLIB
  404. select GENERIC_CLOCKEVENTS
  405. select PLAT_ORION
  406. help
  407. Support for the following Marvell Kirkwood series SoCs:
  408. 88F6180, 88F6192 and 88F6281.
  409. config ARCH_LOKI
  410. bool "Marvell Loki (88RC8480)"
  411. select CPU_FEROCEON
  412. select GENERIC_CLOCKEVENTS
  413. select PLAT_ORION
  414. help
  415. Support for the Marvell Loki (88RC8480) SoC.
  416. config ARCH_LPC32XX
  417. bool "NXP LPC32XX"
  418. select CPU_ARM926T
  419. select ARCH_REQUIRE_GPIOLIB
  420. select HAVE_IDE
  421. select ARM_AMBA
  422. select USB_ARCH_HAS_OHCI
  423. select CLKDEV_LOOKUP
  424. select GENERIC_TIME
  425. select GENERIC_CLOCKEVENTS
  426. help
  427. Support for the NXP LPC32XX family of processors
  428. config ARCH_MV78XX0
  429. bool "Marvell MV78xx0"
  430. select CPU_FEROCEON
  431. select PCI
  432. select ARCH_REQUIRE_GPIOLIB
  433. select GENERIC_CLOCKEVENTS
  434. select PLAT_ORION
  435. help
  436. Support for the following Marvell MV78xx0 series SoCs:
  437. MV781x0, MV782x0.
  438. config ARCH_ORION5X
  439. bool "Marvell Orion"
  440. depends on MMU
  441. select CPU_FEROCEON
  442. select PCI
  443. select ARCH_REQUIRE_GPIOLIB
  444. select GENERIC_CLOCKEVENTS
  445. select PLAT_ORION
  446. help
  447. Support for the following Marvell Orion 5x series SoCs:
  448. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  449. Orion-2 (5281), Orion-1-90 (6183).
  450. config ARCH_MMP
  451. bool "Marvell PXA168/910/MMP2"
  452. depends on MMU
  453. select ARCH_REQUIRE_GPIOLIB
  454. select CLKDEV_LOOKUP
  455. select GENERIC_CLOCKEVENTS
  456. select HAVE_SCHED_CLOCK
  457. select TICK_ONESHOT
  458. select PLAT_PXA
  459. select SPARSE_IRQ
  460. help
  461. Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
  462. config ARCH_KS8695
  463. bool "Micrel/Kendin KS8695"
  464. select CPU_ARM922T
  465. select ARCH_REQUIRE_GPIOLIB
  466. select ARCH_USES_GETTIMEOFFSET
  467. help
  468. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  469. System-on-Chip devices.
  470. config ARCH_NS9XXX
  471. bool "NetSilicon NS9xxx"
  472. select CPU_ARM926T
  473. select GENERIC_GPIO
  474. select GENERIC_CLOCKEVENTS
  475. select HAVE_CLK
  476. help
  477. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  478. System.
  479. <http://www.digi.com/products/microprocessors/index.jsp>
  480. config ARCH_W90X900
  481. bool "Nuvoton W90X900 CPU"
  482. select CPU_ARM926T
  483. select ARCH_REQUIRE_GPIOLIB
  484. select CLKDEV_LOOKUP
  485. select GENERIC_CLOCKEVENTS
  486. help
  487. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  488. At present, the w90x900 has been renamed nuc900, regarding
  489. the ARM series product line, you can login the following
  490. link address to know more.
  491. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  492. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  493. config ARCH_NUC93X
  494. bool "Nuvoton NUC93X CPU"
  495. select CPU_ARM926T
  496. select CLKDEV_LOOKUP
  497. help
  498. Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
  499. low-power and high performance MPEG-4/JPEG multimedia controller chip.
  500. config ARCH_TEGRA
  501. bool "NVIDIA Tegra"
  502. select CLKDEV_LOOKUP
  503. select GENERIC_TIME
  504. select GENERIC_CLOCKEVENTS
  505. select GENERIC_GPIO
  506. select HAVE_CLK
  507. select HAVE_SCHED_CLOCK
  508. select ARCH_HAS_BARRIERS if CACHE_L2X0
  509. select ARCH_HAS_CPUFREQ
  510. help
  511. This enables support for NVIDIA Tegra based systems (Tegra APX,
  512. Tegra 6xx and Tegra 2 series).
  513. config ARCH_PNX4008
  514. bool "Philips Nexperia PNX4008 Mobile"
  515. select CPU_ARM926T
  516. select CLKDEV_LOOKUP
  517. select ARCH_USES_GETTIMEOFFSET
  518. help
  519. This enables support for Philips PNX4008 mobile platform.
  520. config ARCH_PXA
  521. bool "PXA2xx/PXA3xx-based"
  522. depends on MMU
  523. select ARCH_MTD_XIP
  524. select ARCH_HAS_CPUFREQ
  525. select CLKDEV_LOOKUP
  526. select ARCH_REQUIRE_GPIOLIB
  527. select GENERIC_CLOCKEVENTS
  528. select HAVE_SCHED_CLOCK
  529. select TICK_ONESHOT
  530. select PLAT_PXA
  531. select SPARSE_IRQ
  532. help
  533. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  534. config ARCH_MSM
  535. bool "Qualcomm MSM"
  536. select HAVE_CLK
  537. select GENERIC_CLOCKEVENTS
  538. select ARCH_REQUIRE_GPIOLIB
  539. help
  540. Support for Qualcomm MSM/QSD based systems. This runs on the
  541. apps processor of the MSM/QSD and depends on a shared memory
  542. interface to the modem processor which runs the baseband
  543. stack and controls some vital subsystems
  544. (clock and power control, etc).
  545. config ARCH_SHMOBILE
  546. bool "Renesas SH-Mobile / R-Mobile"
  547. select HAVE_CLK
  548. select CLKDEV_LOOKUP
  549. select GENERIC_CLOCKEVENTS
  550. select NO_IOPORT
  551. select SPARSE_IRQ
  552. select MULTI_IRQ_HANDLER
  553. help
  554. Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
  555. config ARCH_RPC
  556. bool "RiscPC"
  557. select ARCH_ACORN
  558. select FIQ
  559. select TIMER_ACORN
  560. select ARCH_MAY_HAVE_PC_FDC
  561. select HAVE_PATA_PLATFORM
  562. select ISA_DMA_API
  563. select NO_IOPORT
  564. select ARCH_SPARSEMEM_ENABLE
  565. select ARCH_USES_GETTIMEOFFSET
  566. help
  567. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  568. CD-ROM interface, serial and parallel port, and the floppy drive.
  569. config ARCH_SA1100
  570. bool "SA1100-based"
  571. select CPU_SA1100
  572. select ISA
  573. select ARCH_SPARSEMEM_ENABLE
  574. select ARCH_MTD_XIP
  575. select ARCH_HAS_CPUFREQ
  576. select CPU_FREQ
  577. select GENERIC_CLOCKEVENTS
  578. select HAVE_CLK
  579. select HAVE_SCHED_CLOCK
  580. select TICK_ONESHOT
  581. select ARCH_REQUIRE_GPIOLIB
  582. help
  583. Support for StrongARM 11x0 based boards.
  584. config ARCH_S3C2410
  585. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
  586. select GENERIC_GPIO
  587. select ARCH_HAS_CPUFREQ
  588. select HAVE_CLK
  589. select ARCH_USES_GETTIMEOFFSET
  590. select HAVE_S3C2410_I2C if I2C
  591. help
  592. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  593. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  594. the Samsung SMDK2410 development board (and derivatives).
  595. Note, the S3C2416 and the S3C2450 are so close that they even share
  596. the same SoC ID code. This means that there is no seperate machine
  597. directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
  598. config ARCH_S3C64XX
  599. bool "Samsung S3C64XX"
  600. select PLAT_SAMSUNG
  601. select CPU_V6
  602. select ARM_VIC
  603. select HAVE_CLK
  604. select NO_IOPORT
  605. select ARCH_USES_GETTIMEOFFSET
  606. select ARCH_HAS_CPUFREQ
  607. select ARCH_REQUIRE_GPIOLIB
  608. select SAMSUNG_CLKSRC
  609. select SAMSUNG_IRQ_VIC_TIMER
  610. select SAMSUNG_IRQ_UART
  611. select S3C_GPIO_TRACK
  612. select S3C_GPIO_PULL_UPDOWN
  613. select S3C_GPIO_CFG_S3C24XX
  614. select S3C_GPIO_CFG_S3C64XX
  615. select S3C_DEV_NAND
  616. select USB_ARCH_HAS_OHCI
  617. select SAMSUNG_GPIOLIB_4BIT
  618. select HAVE_S3C2410_I2C if I2C
  619. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  620. help
  621. Samsung S3C64XX series based systems
  622. config ARCH_S5P64X0
  623. bool "Samsung S5P6440 S5P6450"
  624. select CPU_V6
  625. select GENERIC_GPIO
  626. select HAVE_CLK
  627. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  628. select ARCH_USES_GETTIMEOFFSET
  629. select HAVE_S3C2410_I2C if I2C
  630. select HAVE_S3C_RTC if RTC_CLASS
  631. help
  632. Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
  633. SMDK6450.
  634. config ARCH_S5P6442
  635. bool "Samsung S5P6442"
  636. select CPU_V6
  637. select GENERIC_GPIO
  638. select HAVE_CLK
  639. select ARCH_USES_GETTIMEOFFSET
  640. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  641. help
  642. Samsung S5P6442 CPU based systems
  643. config ARCH_S5PC100
  644. bool "Samsung S5PC100"
  645. select GENERIC_GPIO
  646. select HAVE_CLK
  647. select CPU_V7
  648. select ARM_L1_CACHE_SHIFT_6
  649. select ARCH_USES_GETTIMEOFFSET
  650. select HAVE_S3C2410_I2C if I2C
  651. select HAVE_S3C_RTC if RTC_CLASS
  652. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  653. help
  654. Samsung S5PC100 series based systems
  655. config ARCH_S5PV210
  656. bool "Samsung S5PV210/S5PC110"
  657. select CPU_V7
  658. select ARCH_SPARSEMEM_ENABLE
  659. select GENERIC_GPIO
  660. select HAVE_CLK
  661. select ARM_L1_CACHE_SHIFT_6
  662. select ARCH_HAS_CPUFREQ
  663. select ARCH_USES_GETTIMEOFFSET
  664. select HAVE_S3C2410_I2C if I2C
  665. select HAVE_S3C_RTC if RTC_CLASS
  666. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  667. help
  668. Samsung S5PV210/S5PC110 series based systems
  669. config ARCH_S5PV310
  670. bool "Samsung S5PV310/S5PC210"
  671. select CPU_V7
  672. select ARCH_SPARSEMEM_ENABLE
  673. select GENERIC_GPIO
  674. select HAVE_CLK
  675. select ARCH_HAS_CPUFREQ
  676. select GENERIC_CLOCKEVENTS
  677. select HAVE_S3C_RTC if RTC_CLASS
  678. select HAVE_S3C2410_I2C if I2C
  679. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  680. help
  681. Samsung S5PV310 series based systems
  682. config ARCH_SHARK
  683. bool "Shark"
  684. select CPU_SA110
  685. select ISA
  686. select ISA_DMA
  687. select ZONE_DMA
  688. select PCI
  689. select ARCH_USES_GETTIMEOFFSET
  690. help
  691. Support for the StrongARM based Digital DNARD machine, also known
  692. as "Shark" (<http://www.shark-linux.de/shark.html>).
  693. config ARCH_TCC_926
  694. bool "Telechips TCC ARM926-based systems"
  695. select CPU_ARM926T
  696. select HAVE_CLK
  697. select CLKDEV_LOOKUP
  698. select GENERIC_CLOCKEVENTS
  699. help
  700. Support for Telechips TCC ARM926-based systems.
  701. config ARCH_LH7A40X
  702. bool "Sharp LH7A40X"
  703. select CPU_ARM922T
  704. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  705. select ARCH_USES_GETTIMEOFFSET
  706. help
  707. Say Y here for systems based on one of the Sharp LH7A40X
  708. System on a Chip processors. These CPUs include an ARM922T
  709. core with a wide array of integrated devices for
  710. hand-held and low-power applications.
  711. config ARCH_U300
  712. bool "ST-Ericsson U300 Series"
  713. depends on MMU
  714. select CPU_ARM926T
  715. select HAVE_SCHED_CLOCK
  716. select HAVE_TCM
  717. select ARM_AMBA
  718. select ARM_VIC
  719. select GENERIC_CLOCKEVENTS
  720. select CLKDEV_LOOKUP
  721. select GENERIC_GPIO
  722. help
  723. Support for ST-Ericsson U300 series mobile platforms.
  724. config ARCH_U8500
  725. bool "ST-Ericsson U8500 Series"
  726. select CPU_V7
  727. select ARM_AMBA
  728. select GENERIC_CLOCKEVENTS
  729. select CLKDEV_LOOKUP
  730. select ARCH_REQUIRE_GPIOLIB
  731. select ARCH_HAS_CPUFREQ
  732. help
  733. Support for ST-Ericsson's Ux500 architecture
  734. config ARCH_NOMADIK
  735. bool "STMicroelectronics Nomadik"
  736. select ARM_AMBA
  737. select ARM_VIC
  738. select CPU_ARM926T
  739. select CLKDEV_LOOKUP
  740. select GENERIC_CLOCKEVENTS
  741. select ARCH_REQUIRE_GPIOLIB
  742. help
  743. Support for the Nomadik platform by ST-Ericsson
  744. config ARCH_DAVINCI
  745. bool "TI DaVinci"
  746. select GENERIC_CLOCKEVENTS
  747. select ARCH_REQUIRE_GPIOLIB
  748. select ZONE_DMA
  749. select HAVE_IDE
  750. select CLKDEV_LOOKUP
  751. select GENERIC_ALLOCATOR
  752. select ARCH_HAS_HOLES_MEMORYMODEL
  753. help
  754. Support for TI's DaVinci platform.
  755. config ARCH_OMAP
  756. bool "TI OMAP"
  757. select HAVE_CLK
  758. select ARCH_REQUIRE_GPIOLIB
  759. select ARCH_HAS_CPUFREQ
  760. select GENERIC_CLOCKEVENTS
  761. select HAVE_SCHED_CLOCK
  762. select ARCH_HAS_HOLES_MEMORYMODEL
  763. help
  764. Support for TI's OMAP platform (OMAP1/2/3/4).
  765. config PLAT_SPEAR
  766. bool "ST SPEAr"
  767. select ARM_AMBA
  768. select ARCH_REQUIRE_GPIOLIB
  769. select CLKDEV_LOOKUP
  770. select GENERIC_CLOCKEVENTS
  771. select HAVE_CLK
  772. help
  773. Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
  774. endchoice
  775. #
  776. # This is sorted alphabetically by mach-* pathname. However, plat-*
  777. # Kconfigs may be included either alphabetically (according to the
  778. # plat- suffix) or along side the corresponding mach-* source.
  779. #
  780. source "arch/arm/mach-aaec2000/Kconfig"
  781. source "arch/arm/mach-at91/Kconfig"
  782. source "arch/arm/mach-bcmring/Kconfig"
  783. source "arch/arm/mach-clps711x/Kconfig"
  784. source "arch/arm/mach-cns3xxx/Kconfig"
  785. source "arch/arm/mach-davinci/Kconfig"
  786. source "arch/arm/mach-dove/Kconfig"
  787. source "arch/arm/mach-ep93xx/Kconfig"
  788. source "arch/arm/mach-footbridge/Kconfig"
  789. source "arch/arm/mach-gemini/Kconfig"
  790. source "arch/arm/mach-h720x/Kconfig"
  791. source "arch/arm/mach-integrator/Kconfig"
  792. source "arch/arm/mach-iop32x/Kconfig"
  793. source "arch/arm/mach-iop33x/Kconfig"
  794. source "arch/arm/mach-iop13xx/Kconfig"
  795. source "arch/arm/mach-ixp4xx/Kconfig"
  796. source "arch/arm/mach-ixp2000/Kconfig"
  797. source "arch/arm/mach-ixp23xx/Kconfig"
  798. source "arch/arm/mach-kirkwood/Kconfig"
  799. source "arch/arm/mach-ks8695/Kconfig"
  800. source "arch/arm/mach-lh7a40x/Kconfig"
  801. source "arch/arm/mach-loki/Kconfig"
  802. source "arch/arm/mach-lpc32xx/Kconfig"
  803. source "arch/arm/mach-msm/Kconfig"
  804. source "arch/arm/mach-mv78xx0/Kconfig"
  805. source "arch/arm/plat-mxc/Kconfig"
  806. source "arch/arm/mach-mxs/Kconfig"
  807. source "arch/arm/mach-netx/Kconfig"
  808. source "arch/arm/mach-nomadik/Kconfig"
  809. source "arch/arm/plat-nomadik/Kconfig"
  810. source "arch/arm/mach-ns9xxx/Kconfig"
  811. source "arch/arm/mach-nuc93x/Kconfig"
  812. source "arch/arm/plat-omap/Kconfig"
  813. source "arch/arm/mach-omap1/Kconfig"
  814. source "arch/arm/mach-omap2/Kconfig"
  815. source "arch/arm/mach-orion5x/Kconfig"
  816. source "arch/arm/mach-pxa/Kconfig"
  817. source "arch/arm/plat-pxa/Kconfig"
  818. source "arch/arm/mach-mmp/Kconfig"
  819. source "arch/arm/mach-realview/Kconfig"
  820. source "arch/arm/mach-sa1100/Kconfig"
  821. source "arch/arm/plat-samsung/Kconfig"
  822. source "arch/arm/plat-s3c24xx/Kconfig"
  823. source "arch/arm/plat-s5p/Kconfig"
  824. source "arch/arm/plat-spear/Kconfig"
  825. source "arch/arm/plat-tcc/Kconfig"
  826. if ARCH_S3C2410
  827. source "arch/arm/mach-s3c2400/Kconfig"
  828. source "arch/arm/mach-s3c2410/Kconfig"
  829. source "arch/arm/mach-s3c2412/Kconfig"
  830. source "arch/arm/mach-s3c2416/Kconfig"
  831. source "arch/arm/mach-s3c2440/Kconfig"
  832. source "arch/arm/mach-s3c2443/Kconfig"
  833. endif
  834. if ARCH_S3C64XX
  835. source "arch/arm/mach-s3c64xx/Kconfig"
  836. endif
  837. source "arch/arm/mach-s5p64x0/Kconfig"
  838. source "arch/arm/mach-s5p6442/Kconfig"
  839. source "arch/arm/mach-s5pc100/Kconfig"
  840. source "arch/arm/mach-s5pv210/Kconfig"
  841. source "arch/arm/mach-s5pv310/Kconfig"
  842. source "arch/arm/mach-shmobile/Kconfig"
  843. source "arch/arm/plat-stmp3xxx/Kconfig"
  844. source "arch/arm/mach-tegra/Kconfig"
  845. source "arch/arm/mach-u300/Kconfig"
  846. source "arch/arm/mach-ux500/Kconfig"
  847. source "arch/arm/mach-versatile/Kconfig"
  848. source "arch/arm/mach-vexpress/Kconfig"
  849. source "arch/arm/plat-versatile/Kconfig"
  850. source "arch/arm/mach-w90x900/Kconfig"
  851. # Definitions to make life easier
  852. config ARCH_ACORN
  853. bool
  854. config PLAT_IOP
  855. bool
  856. select GENERIC_CLOCKEVENTS
  857. select HAVE_SCHED_CLOCK
  858. config PLAT_ORION
  859. bool
  860. select HAVE_SCHED_CLOCK
  861. config PLAT_PXA
  862. bool
  863. config PLAT_VERSATILE
  864. bool
  865. config ARM_TIMER_SP804
  866. bool
  867. source arch/arm/mm/Kconfig
  868. config IWMMXT
  869. bool "Enable iWMMXt support"
  870. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
  871. default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
  872. help
  873. Enable support for iWMMXt context switching at run time if
  874. running on a CPU that supports it.
  875. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  876. config XSCALE_PMU
  877. bool
  878. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  879. default y
  880. config CPU_HAS_PMU
  881. depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
  882. (!ARCH_OMAP3 || OMAP3_EMU)
  883. default y
  884. bool
  885. config MULTI_IRQ_HANDLER
  886. bool
  887. help
  888. Allow each machine to specify it's own IRQ handler at run time.
  889. if !MMU
  890. source "arch/arm/Kconfig-nommu"
  891. endif
  892. config ARM_ERRATA_411920
  893. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  894. depends on CPU_V6
  895. help
  896. Invalidation of the Instruction Cache operation can
  897. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  898. It does not affect the MPCore. This option enables the ARM Ltd.
  899. recommended workaround.
  900. config ARM_ERRATA_430973
  901. bool "ARM errata: Stale prediction on replaced interworking branch"
  902. depends on CPU_V7
  903. help
  904. This option enables the workaround for the 430973 Cortex-A8
  905. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  906. interworking branch is replaced with another code sequence at the
  907. same virtual address, whether due to self-modifying code or virtual
  908. to physical address re-mapping, Cortex-A8 does not recover from the
  909. stale interworking branch prediction. This results in Cortex-A8
  910. executing the new code sequence in the incorrect ARM or Thumb state.
  911. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  912. and also flushes the branch target cache at every context switch.
  913. Note that setting specific bits in the ACTLR register may not be
  914. available in non-secure mode.
  915. config ARM_ERRATA_458693
  916. bool "ARM errata: Processor deadlock when a false hazard is created"
  917. depends on CPU_V7
  918. help
  919. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  920. erratum. For very specific sequences of memory operations, it is
  921. possible for a hazard condition intended for a cache line to instead
  922. be incorrectly associated with a different cache line. This false
  923. hazard might then cause a processor deadlock. The workaround enables
  924. the L1 caching of the NEON accesses and disables the PLD instruction
  925. in the ACTLR register. Note that setting specific bits in the ACTLR
  926. register may not be available in non-secure mode.
  927. config ARM_ERRATA_460075
  928. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  929. depends on CPU_V7
  930. help
  931. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  932. erratum. Any asynchronous access to the L2 cache may encounter a
  933. situation in which recent store transactions to the L2 cache are lost
  934. and overwritten with stale memory contents from external memory. The
  935. workaround disables the write-allocate mode for the L2 cache via the
  936. ACTLR register. Note that setting specific bits in the ACTLR register
  937. may not be available in non-secure mode.
  938. config ARM_ERRATA_742230
  939. bool "ARM errata: DMB operation may be faulty"
  940. depends on CPU_V7 && SMP
  941. help
  942. This option enables the workaround for the 742230 Cortex-A9
  943. (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
  944. between two write operations may not ensure the correct visibility
  945. ordering of the two writes. This workaround sets a specific bit in
  946. the diagnostic register of the Cortex-A9 which causes the DMB
  947. instruction to behave as a DSB, ensuring the correct behaviour of
  948. the two writes.
  949. config ARM_ERRATA_742231
  950. bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
  951. depends on CPU_V7 && SMP
  952. help
  953. This option enables the workaround for the 742231 Cortex-A9
  954. (r2p0..r2p2) erratum. Under certain conditions, specific to the
  955. Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
  956. accessing some data located in the same cache line, may get corrupted
  957. data due to bad handling of the address hazard when the line gets
  958. replaced from one of the CPUs at the same time as another CPU is
  959. accessing it. This workaround sets specific bits in the diagnostic
  960. register of the Cortex-A9 which reduces the linefill issuing
  961. capabilities of the processor.
  962. config PL310_ERRATA_588369
  963. bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
  964. depends on CACHE_L2X0 && ARCH_OMAP4
  965. help
  966. The PL310 L2 cache controller implements three types of Clean &
  967. Invalidate maintenance operations: by Physical Address
  968. (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
  969. They are architecturally defined to behave as the execution of a
  970. clean operation followed immediately by an invalidate operation,
  971. both performing to the same memory location. This functionality
  972. is not correctly implemented in PL310 as clean lines are not
  973. invalidated as a result of these operations. Note that this errata
  974. uses Texas Instrument's secure monitor api.
  975. config ARM_ERRATA_720789
  976. bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
  977. depends on CPU_V7 && SMP
  978. help
  979. This option enables the workaround for the 720789 Cortex-A9 (prior to
  980. r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
  981. broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
  982. As a consequence of this erratum, some TLB entries which should be
  983. invalidated are not, resulting in an incoherency in the system page
  984. tables. The workaround changes the TLB flushing routines to invalidate
  985. entries regardless of the ASID.
  986. config ARM_ERRATA_743622
  987. bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
  988. depends on CPU_V7
  989. help
  990. This option enables the workaround for the 743622 Cortex-A9
  991. (r2p0..r2p2) erratum. Under very rare conditions, a faulty
  992. optimisation in the Cortex-A9 Store Buffer may lead to data
  993. corruption. This workaround sets a specific bit in the diagnostic
  994. register of the Cortex-A9 which disables the Store Buffer
  995. optimisation, preventing the defect from occurring. This has no
  996. visible impact on the overall performance or power consumption of the
  997. processor.
  998. endmenu
  999. source "arch/arm/common/Kconfig"
  1000. menu "Bus support"
  1001. config ARM_AMBA
  1002. bool
  1003. config ISA
  1004. bool
  1005. help
  1006. Find out whether you have ISA slots on your motherboard. ISA is the
  1007. name of a bus system, i.e. the way the CPU talks to the other stuff
  1008. inside your box. Other bus systems are PCI, EISA, MicroChannel
  1009. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  1010. newer boards don't support it. If you have ISA, say Y, otherwise N.
  1011. # Select ISA DMA controller support
  1012. config ISA_DMA
  1013. bool
  1014. select ISA_DMA_API
  1015. # Select ISA DMA interface
  1016. config ISA_DMA_API
  1017. bool
  1018. config PCI
  1019. bool "PCI support" if MIGHT_HAVE_PCI
  1020. help
  1021. Find out whether you have a PCI motherboard. PCI is the name of a
  1022. bus system, i.e. the way the CPU talks to the other stuff inside
  1023. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  1024. VESA. If you have PCI, say Y, otherwise N.
  1025. config PCI_DOMAINS
  1026. bool
  1027. depends on PCI
  1028. config PCI_NANOENGINE
  1029. bool "BSE nanoEngine PCI support"
  1030. depends on SA1100_NANOENGINE
  1031. help
  1032. Enable PCI on the BSE nanoEngine board.
  1033. config PCI_SYSCALL
  1034. def_bool PCI
  1035. # Select the host bridge type
  1036. config PCI_HOST_VIA82C505
  1037. bool
  1038. depends on PCI && ARCH_SHARK
  1039. default y
  1040. config PCI_HOST_ITE8152
  1041. bool
  1042. depends on PCI && MACH_ARMCORE
  1043. default y
  1044. select DMABOUNCE
  1045. source "drivers/pci/Kconfig"
  1046. source "drivers/pcmcia/Kconfig"
  1047. endmenu
  1048. menu "Kernel Features"
  1049. source "kernel/time/Kconfig"
  1050. config SMP
  1051. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  1052. depends on EXPERIMENTAL
  1053. depends on GENERIC_CLOCKEVENTS
  1054. depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
  1055. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
  1056. ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
  1057. ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE
  1058. select USE_GENERIC_SMP_HELPERS
  1059. select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
  1060. help
  1061. This enables support for systems with more than one CPU. If you have
  1062. a system with only one CPU, like most personal computers, say N. If
  1063. you have a system with more than one CPU, say Y.
  1064. If you say N here, the kernel will run on single and multiprocessor
  1065. machines, but will use only one CPU of a multiprocessor machine. If
  1066. you say Y here, the kernel will run on many, but not all, single
  1067. processor machines. On a single processor machine, the kernel will
  1068. run faster if you say N here.
  1069. See also <file:Documentation/i386/IO-APIC.txt>,
  1070. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  1071. <http://tldp.org/HOWTO/SMP-HOWTO.html>.
  1072. If you don't know what to do here, say N.
  1073. config SMP_ON_UP
  1074. bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
  1075. depends on EXPERIMENTAL
  1076. depends on SMP && !XIP_KERNEL
  1077. default y
  1078. help
  1079. SMP kernels contain instructions which fail on non-SMP processors.
  1080. Enabling this option allows the kernel to modify itself to make
  1081. these instructions safe. Disabling it allows about 1K of space
  1082. savings.
  1083. If you don't know what to do here, say Y.
  1084. config HAVE_ARM_SCU
  1085. bool
  1086. depends on SMP
  1087. help
  1088. This option enables support for the ARM system coherency unit
  1089. config HAVE_ARM_TWD
  1090. bool
  1091. depends on SMP
  1092. select TICK_ONESHOT
  1093. help
  1094. This options enables support for the ARM timer and watchdog unit
  1095. choice
  1096. prompt "Memory split"
  1097. default VMSPLIT_3G
  1098. help
  1099. Select the desired split between kernel and user memory.
  1100. If you are not absolutely sure what you are doing, leave this
  1101. option alone!
  1102. config VMSPLIT_3G
  1103. bool "3G/1G user/kernel split"
  1104. config VMSPLIT_2G
  1105. bool "2G/2G user/kernel split"
  1106. config VMSPLIT_1G
  1107. bool "1G/3G user/kernel split"
  1108. endchoice
  1109. config PAGE_OFFSET
  1110. hex
  1111. default 0x40000000 if VMSPLIT_1G
  1112. default 0x80000000 if VMSPLIT_2G
  1113. default 0xC0000000
  1114. config NR_CPUS
  1115. int "Maximum number of CPUs (2-32)"
  1116. range 2 32
  1117. depends on SMP
  1118. default "4"
  1119. config HOTPLUG_CPU
  1120. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  1121. depends on SMP && HOTPLUG && EXPERIMENTAL
  1122. depends on !ARCH_MSM
  1123. help
  1124. Say Y here to experiment with turning CPUs off and on. CPUs
  1125. can be controlled through /sys/devices/system/cpu.
  1126. config LOCAL_TIMERS
  1127. bool "Use local timer interrupts"
  1128. depends on SMP
  1129. default y
  1130. select HAVE_ARM_TWD if !ARCH_MSM_SCORPIONMP
  1131. help
  1132. Enable support for local timers on SMP platforms, rather then the
  1133. legacy IPI broadcast method. Local timers allows the system
  1134. accounting to be spread across the timer interval, preventing a
  1135. "thundering herd" at every timer tick.
  1136. source kernel/Kconfig.preempt
  1137. config HZ
  1138. int
  1139. default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
  1140. ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
  1141. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  1142. default AT91_TIMER_HZ if ARCH_AT91
  1143. default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
  1144. default 100
  1145. config THUMB2_KERNEL
  1146. bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
  1147. depends on CPU_V7 && !CPU_V6 && EXPERIMENTAL
  1148. select AEABI
  1149. select ARM_ASM_UNIFIED
  1150. help
  1151. By enabling this option, the kernel will be compiled in
  1152. Thumb-2 mode. A compiler/assembler that understand the unified
  1153. ARM-Thumb syntax is needed.
  1154. If unsure, say N.
  1155. config ARM_ASM_UNIFIED
  1156. bool
  1157. config AEABI
  1158. bool "Use the ARM EABI to compile the kernel"
  1159. help
  1160. This option allows for the kernel to be compiled using the latest
  1161. ARM ABI (aka EABI). This is only useful if you are using a user
  1162. space environment that is also compiled with EABI.
  1163. Since there are major incompatibilities between the legacy ABI and
  1164. EABI, especially with regard to structure member alignment, this
  1165. option also changes the kernel syscall calling convention to
  1166. disambiguate both ABIs and allow for backward compatibility support
  1167. (selected with CONFIG_OABI_COMPAT).
  1168. To use this you need GCC version 4.0.0 or later.
  1169. config OABI_COMPAT
  1170. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  1171. depends on AEABI && EXPERIMENTAL
  1172. default y
  1173. help
  1174. This option preserves the old syscall interface along with the
  1175. new (ARM EABI) one. It also provides a compatibility layer to
  1176. intercept syscalls that have structure arguments which layout
  1177. in memory differs between the legacy ABI and the new ARM EABI
  1178. (only for non "thumb" binaries). This option adds a tiny
  1179. overhead to all syscalls and produces a slightly larger kernel.
  1180. If you know you'll be using only pure EABI user space then you
  1181. can say N here. If this option is not selected and you attempt
  1182. to execute a legacy ABI binary then the result will be
  1183. UNPREDICTABLE (in fact it can be predicted that it won't work
  1184. at all). If in doubt say Y.
  1185. config ARCH_HAS_HOLES_MEMORYMODEL
  1186. bool
  1187. config ARCH_SPARSEMEM_ENABLE
  1188. bool
  1189. config ARCH_SPARSEMEM_DEFAULT
  1190. def_bool ARCH_SPARSEMEM_ENABLE
  1191. config ARCH_SELECT_MEMORY_MODEL
  1192. def_bool ARCH_SPARSEMEM_ENABLE
  1193. config HIGHMEM
  1194. bool "High Memory Support (EXPERIMENTAL)"
  1195. depends on MMU && EXPERIMENTAL
  1196. help
  1197. The address space of ARM processors is only 4 Gigabytes large
  1198. and it has to accommodate user address space, kernel address
  1199. space as well as some memory mapped IO. That means that, if you
  1200. have a large amount of physical memory and/or IO, not all of the
  1201. memory can be "permanently mapped" by the kernel. The physical
  1202. memory that is not permanently mapped is called "high memory".
  1203. Depending on the selected kernel/user memory split, minimum
  1204. vmalloc space and actual amount of RAM, you may not need this
  1205. option which should result in a slightly faster kernel.
  1206. If unsure, say n.
  1207. config HIGHPTE
  1208. bool "Allocate 2nd-level pagetables from highmem"
  1209. depends on HIGHMEM
  1210. depends on !OUTER_CACHE
  1211. config HW_PERF_EVENTS
  1212. bool "Enable hardware performance counter support for perf events"
  1213. depends on PERF_EVENTS && CPU_HAS_PMU
  1214. default y
  1215. help
  1216. Enable hardware performance counter support for perf events. If
  1217. disabled, perf events will use software events only.
  1218. source "mm/Kconfig"
  1219. config FORCE_MAX_ZONEORDER
  1220. int "Maximum zone order" if ARCH_SHMOBILE
  1221. range 11 64 if ARCH_SHMOBILE
  1222. default "9" if SA1111
  1223. default "11"
  1224. help
  1225. The kernel memory allocator divides physically contiguous memory
  1226. blocks into "zones", where each zone is a power of two number of
  1227. pages. This option selects the largest power of two that the kernel
  1228. keeps in the memory allocator. If you need to allocate very large
  1229. blocks of physically contiguous memory, then you may need to
  1230. increase this value.
  1231. This config option is actually maximum order plus one. For example,
  1232. a value of 11 means that the largest free memory block is 2^10 pages.
  1233. config LEDS
  1234. bool "Timer and CPU usage LEDs"
  1235. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  1236. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  1237. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  1238. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  1239. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  1240. ARCH_AT91 || ARCH_DAVINCI || \
  1241. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  1242. help
  1243. If you say Y here, the LEDs on your machine will be used
  1244. to provide useful information about your current system status.
  1245. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  1246. be able to select which LEDs are active using the options below. If
  1247. you are compiling a kernel for the EBSA-110 or the LART however, the
  1248. red LED will simply flash regularly to indicate that the system is
  1249. still functional. It is safe to say Y here if you have a CATS
  1250. system, but the driver will do nothing.
  1251. config LEDS_TIMER
  1252. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  1253. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1254. || MACH_OMAP_PERSEUS2
  1255. depends on LEDS
  1256. depends on !GENERIC_CLOCKEVENTS
  1257. default y if ARCH_EBSA110
  1258. help
  1259. If you say Y here, one of the system LEDs (the green one on the
  1260. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1261. will flash regularly to indicate that the system is still
  1262. operational. This is mainly useful to kernel hackers who are
  1263. debugging unstable kernels.
  1264. The LART uses the same LED for both Timer LED and CPU usage LED
  1265. functions. You may choose to use both, but the Timer LED function
  1266. will overrule the CPU usage LED.
  1267. config LEDS_CPU
  1268. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1269. !ARCH_OMAP) \
  1270. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1271. || MACH_OMAP_PERSEUS2
  1272. depends on LEDS
  1273. help
  1274. If you say Y here, the red LED will be used to give a good real
  1275. time indication of CPU usage, by lighting whenever the idle task
  1276. is not currently executing.
  1277. The LART uses the same LED for both Timer LED and CPU usage LED
  1278. functions. You may choose to use both, but the Timer LED function
  1279. will overrule the CPU usage LED.
  1280. config ALIGNMENT_TRAP
  1281. bool
  1282. depends on CPU_CP15_MMU
  1283. default y if !ARCH_EBSA110
  1284. select HAVE_PROC_CPU if PROC_FS
  1285. help
  1286. ARM processors cannot fetch/store information which is not
  1287. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1288. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1289. fetch/store instructions will be emulated in software if you say
  1290. here, which has a severe performance impact. This is necessary for
  1291. correct operation of some network protocols. With an IP-only
  1292. configuration it is safe to say N, otherwise say Y.
  1293. config UACCESS_WITH_MEMCPY
  1294. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1295. depends on MMU && EXPERIMENTAL
  1296. default y if CPU_FEROCEON
  1297. help
  1298. Implement faster copy_to_user and clear_user methods for CPU
  1299. cores where a 8-word STM instruction give significantly higher
  1300. memory write throughput than a sequence of individual 32bit stores.
  1301. A possible side effect is a slight increase in scheduling latency
  1302. between threads sharing the same address space if they invoke
  1303. such copy operations with large buffers.
  1304. However, if the CPU data cache is using a write-allocate mode,
  1305. this option is unlikely to provide any performance gain.
  1306. config SECCOMP
  1307. bool
  1308. prompt "Enable seccomp to safely compute untrusted bytecode"
  1309. ---help---
  1310. This kernel feature is useful for number crunching applications
  1311. that may need to compute untrusted bytecode during their
  1312. execution. By using pipes or other transports made available to
  1313. the process as file descriptors supporting the read/write
  1314. syscalls, it's possible to isolate those applications in
  1315. their own address space using seccomp. Once seccomp is
  1316. enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
  1317. and the task is only allowed to execute a few safe syscalls
  1318. defined by each seccomp mode.
  1319. config CC_STACKPROTECTOR
  1320. bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
  1321. depends on EXPERIMENTAL
  1322. help
  1323. This option turns on the -fstack-protector GCC feature. This
  1324. feature puts, at the beginning of functions, a canary value on
  1325. the stack just before the return address, and validates
  1326. the value just before actually returning. Stack based buffer
  1327. overflows (that need to overwrite this return address) now also
  1328. overwrite the canary, which gets detected and the attack is then
  1329. neutralized via a kernel panic.
  1330. This feature requires gcc version 4.2 or above.
  1331. config DEPRECATED_PARAM_STRUCT
  1332. bool "Provide old way to pass kernel parameters"
  1333. help
  1334. This was deprecated in 2001 and announced to live on for 5 years.
  1335. Some old boot loaders still use this way.
  1336. endmenu
  1337. menu "Boot options"
  1338. # Compressed boot loader in ROM. Yes, we really want to ask about
  1339. # TEXT and BSS so we preserve their values in the config files.
  1340. config ZBOOT_ROM_TEXT
  1341. hex "Compressed ROM boot loader base address"
  1342. default "0"
  1343. help
  1344. The physical address at which the ROM-able zImage is to be
  1345. placed in the target. Platforms which normally make use of
  1346. ROM-able zImage formats normally set this to a suitable
  1347. value in their defconfig file.
  1348. If ZBOOT_ROM is not enabled, this has no effect.
  1349. config ZBOOT_ROM_BSS
  1350. hex "Compressed ROM boot loader BSS address"
  1351. default "0"
  1352. help
  1353. The base address of an area of read/write memory in the target
  1354. for the ROM-able zImage which must be available while the
  1355. decompressor is running. It must be large enough to hold the
  1356. entire decompressed kernel plus an additional 128 KiB.
  1357. Platforms which normally make use of ROM-able zImage formats
  1358. normally set this to a suitable value in their defconfig file.
  1359. If ZBOOT_ROM is not enabled, this has no effect.
  1360. config ZBOOT_ROM
  1361. bool "Compressed boot loader in ROM/flash"
  1362. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1363. help
  1364. Say Y here if you intend to execute your compressed kernel image
  1365. (zImage) directly from ROM or flash. If unsure, say N.
  1366. config CMDLINE
  1367. string "Default kernel command string"
  1368. default ""
  1369. help
  1370. On some architectures (EBSA110 and CATS), there is currently no way
  1371. for the boot loader to pass arguments to the kernel. For these
  1372. architectures, you should supply some command-line options at build
  1373. time by entering them here. As a minimum, you should specify the
  1374. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1375. config CMDLINE_FORCE
  1376. bool "Always use the default kernel command string"
  1377. depends on CMDLINE != ""
  1378. help
  1379. Always use the default kernel command string, even if the boot
  1380. loader passes other arguments to the kernel.
  1381. This is useful if you cannot or don't want to change the
  1382. command-line options your boot loader passes to the kernel.
  1383. If unsure, say N.
  1384. config XIP_KERNEL
  1385. bool "Kernel Execute-In-Place from ROM"
  1386. depends on !ZBOOT_ROM
  1387. help
  1388. Execute-In-Place allows the kernel to run from non-volatile storage
  1389. directly addressable by the CPU, such as NOR flash. This saves RAM
  1390. space since the text section of the kernel is not loaded from flash
  1391. to RAM. Read-write sections, such as the data section and stack,
  1392. are still copied to RAM. The XIP kernel is not compressed since
  1393. it has to run directly from flash, so it will take more space to
  1394. store it. The flash address used to link the kernel object files,
  1395. and for storing it, is configuration dependent. Therefore, if you
  1396. say Y here, you must know the proper physical address where to
  1397. store the kernel image depending on your own flash memory usage.
  1398. Also note that the make target becomes "make xipImage" rather than
  1399. "make zImage" or "make Image". The final kernel binary to put in
  1400. ROM memory will be arch/arm/boot/xipImage.
  1401. If unsure, say N.
  1402. config XIP_PHYS_ADDR
  1403. hex "XIP Kernel Physical Location"
  1404. depends on XIP_KERNEL
  1405. default "0x00080000"
  1406. help
  1407. This is the physical address in your flash memory the kernel will
  1408. be linked for and stored to. This address is dependent on your
  1409. own flash usage.
  1410. config KEXEC
  1411. bool "Kexec system call (EXPERIMENTAL)"
  1412. depends on EXPERIMENTAL
  1413. help
  1414. kexec is a system call that implements the ability to shutdown your
  1415. current kernel, and to start another kernel. It is like a reboot
  1416. but it is independent of the system firmware. And like a reboot
  1417. you can start any kernel with it, not just Linux.
  1418. It is an ongoing process to be certain the hardware in a machine
  1419. is properly shutdown, so do not be surprised if this code does not
  1420. initially work for you. It may help to enable device hotplugging
  1421. support.
  1422. config ATAGS_PROC
  1423. bool "Export atags in procfs"
  1424. depends on KEXEC
  1425. default y
  1426. help
  1427. Should the atags used to boot the kernel be exported in an "atags"
  1428. file in procfs. Useful with kexec.
  1429. config CRASH_DUMP
  1430. bool "Build kdump crash kernel (EXPERIMENTAL)"
  1431. depends on EXPERIMENTAL
  1432. help
  1433. Generate crash dump after being started by kexec. This should
  1434. be normally only set in special crash dump kernels which are
  1435. loaded in the main kernel with kexec-tools into a specially
  1436. reserved region and then later executed after a crash by
  1437. kdump/kexec. The crash dump kernel must be compiled to a
  1438. memory address not used by the main kernel
  1439. For more details see Documentation/kdump/kdump.txt
  1440. config AUTO_ZRELADDR
  1441. bool "Auto calculation of the decompressed kernel image address"
  1442. depends on !ZBOOT_ROM && !ARCH_U300
  1443. help
  1444. ZRELADDR is the physical address where the decompressed kernel
  1445. image will be placed. If AUTO_ZRELADDR is selected, the address
  1446. will be determined at run-time by masking the current IP with
  1447. 0xf8000000. This assumes the zImage being placed in the first 128MB
  1448. from start of memory.
  1449. endmenu
  1450. menu "CPU Power Management"
  1451. if ARCH_HAS_CPUFREQ
  1452. source "drivers/cpufreq/Kconfig"
  1453. config CPU_FREQ_IMX
  1454. tristate "CPUfreq driver for i.MX CPUs"
  1455. depends on ARCH_MXC && CPU_FREQ
  1456. help
  1457. This enables the CPUfreq driver for i.MX CPUs.
  1458. config CPU_FREQ_SA1100
  1459. bool
  1460. config CPU_FREQ_SA1110
  1461. bool
  1462. config CPU_FREQ_INTEGRATOR
  1463. tristate "CPUfreq driver for ARM Integrator CPUs"
  1464. depends on ARCH_INTEGRATOR && CPU_FREQ
  1465. default y
  1466. help
  1467. This enables the CPUfreq driver for ARM Integrator CPUs.
  1468. For details, take a look at <file:Documentation/cpu-freq>.
  1469. If in doubt, say Y.
  1470. config CPU_FREQ_PXA
  1471. bool
  1472. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1473. default y
  1474. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1475. config CPU_FREQ_S3C64XX
  1476. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1477. depends on CPU_FREQ && CPU_S3C6410
  1478. config CPU_FREQ_S3C
  1479. bool
  1480. help
  1481. Internal configuration node for common cpufreq on Samsung SoC
  1482. config CPU_FREQ_S3C24XX
  1483. bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
  1484. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1485. select CPU_FREQ_S3C
  1486. help
  1487. This enables the CPUfreq driver for the Samsung S3C24XX family
  1488. of CPUs.
  1489. For details, take a look at <file:Documentation/cpu-freq>.
  1490. If in doubt, say N.
  1491. config CPU_FREQ_S3C24XX_PLL
  1492. bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
  1493. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1494. help
  1495. Compile in support for changing the PLL frequency from the
  1496. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1497. after a frequency change, so by default it is not enabled.
  1498. This also means that the PLL tables for the selected CPU(s) will
  1499. be built which may increase the size of the kernel image.
  1500. config CPU_FREQ_S3C24XX_DEBUG
  1501. bool "Debug CPUfreq Samsung driver core"
  1502. depends on CPU_FREQ_S3C24XX
  1503. help
  1504. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1505. config CPU_FREQ_S3C24XX_IODEBUG
  1506. bool "Debug CPUfreq Samsung driver IO timing"
  1507. depends on CPU_FREQ_S3C24XX
  1508. help
  1509. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1510. config CPU_FREQ_S3C24XX_DEBUGFS
  1511. bool "Export debugfs for CPUFreq"
  1512. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1513. help
  1514. Export status information via debugfs.
  1515. endif
  1516. source "drivers/cpuidle/Kconfig"
  1517. endmenu
  1518. menu "Floating point emulation"
  1519. comment "At least one emulation must be selected"
  1520. config FPE_NWFPE
  1521. bool "NWFPE math emulation"
  1522. depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
  1523. ---help---
  1524. Say Y to include the NWFPE floating point emulator in the kernel.
  1525. This is necessary to run most binaries. Linux does not currently
  1526. support floating point hardware so you need to say Y here even if
  1527. your machine has an FPA or floating point co-processor podule.
  1528. You may say N here if you are going to load the Acorn FPEmulator
  1529. early in the bootup.
  1530. config FPE_NWFPE_XP
  1531. bool "Support extended precision"
  1532. depends on FPE_NWFPE
  1533. help
  1534. Say Y to include 80-bit support in the kernel floating-point
  1535. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1536. Note that gcc does not generate 80-bit operations by default,
  1537. so in most cases this option only enlarges the size of the
  1538. floating point emulator without any good reason.
  1539. You almost surely want to say N here.
  1540. config FPE_FASTFPE
  1541. bool "FastFPE math emulation (EXPERIMENTAL)"
  1542. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1543. ---help---
  1544. Say Y here to include the FAST floating point emulator in the kernel.
  1545. This is an experimental much faster emulator which now also has full
  1546. precision for the mantissa. It does not support any exceptions.
  1547. It is very simple, and approximately 3-6 times faster than NWFPE.
  1548. It should be sufficient for most programs. It may be not suitable
  1549. for scientific calculations, but you have to check this for yourself.
  1550. If you do not feel you need a faster FP emulation you should better
  1551. choose NWFPE.
  1552. config VFP
  1553. bool "VFP-format floating point maths"
  1554. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1555. help
  1556. Say Y to include VFP support code in the kernel. This is needed
  1557. if your hardware includes a VFP unit.
  1558. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1559. release notes and additional status information.
  1560. Say N if your target does not have VFP hardware.
  1561. config VFPv3
  1562. bool
  1563. depends on VFP
  1564. default y if CPU_V7
  1565. config NEON
  1566. bool "Advanced SIMD (NEON) Extension support"
  1567. depends on VFPv3 && CPU_V7
  1568. help
  1569. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1570. Extension.
  1571. endmenu
  1572. menu "Userspace binary formats"
  1573. source "fs/Kconfig.binfmt"
  1574. config ARTHUR
  1575. tristate "RISC OS personality"
  1576. depends on !AEABI
  1577. help
  1578. Say Y here to include the kernel code necessary if you want to run
  1579. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1580. experimental; if this sounds frightening, say N and sleep in peace.
  1581. You can also say M here to compile this support as a module (which
  1582. will be called arthur).
  1583. endmenu
  1584. menu "Power management options"
  1585. source "kernel/power/Kconfig"
  1586. config ARCH_SUSPEND_POSSIBLE
  1587. def_bool y
  1588. endmenu
  1589. source "net/Kconfig"
  1590. source "drivers/Kconfig"
  1591. source "fs/Kconfig"
  1592. source "arch/arm/Kconfig.debug"
  1593. source "security/Kconfig"
  1594. source "crypto/Kconfig"
  1595. source "lib/Kconfig"