Kconfig 51 KB

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