Kconfig 49 KB

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