Kconfig 42 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 RTC_LIB
  12. select SYS_SUPPORTS_APM_EMULATION
  13. select GENERIC_ATOMIC64 if (!CPU_32v6K)
  14. select HAVE_OPROFILE
  15. select HAVE_ARCH_KGDB
  16. select HAVE_KPROBES if (!XIP_KERNEL)
  17. select HAVE_KRETPROBES if (HAVE_KPROBES)
  18. select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  19. select HAVE_GENERIC_DMA_COHERENT
  20. select HAVE_KERNEL_GZIP
  21. select HAVE_KERNEL_LZO
  22. select HAVE_PERF_EVENTS
  23. select PERF_USE_VMALLOC
  24. help
  25. The ARM series is a line of low-power-consumption RISC chip designs
  26. licensed by ARM Ltd and targeted at embedded applications and
  27. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  28. manufactured, but legacy ARM-based PC hardware remains popular in
  29. Europe. There is an ARM Linux project with a web page at
  30. <http://www.arm.linux.org.uk/>.
  31. config HAVE_PWM
  32. bool
  33. config SYS_SUPPORTS_APM_EMULATION
  34. bool
  35. config GENERIC_GPIO
  36. bool
  37. config GENERIC_TIME
  38. bool
  39. config GENERIC_CLOCKEVENTS
  40. bool
  41. config GENERIC_CLOCKEVENTS_BROADCAST
  42. bool
  43. depends on GENERIC_CLOCKEVENTS
  44. default y if SMP && !LOCAL_TIMERS
  45. config HAVE_TCM
  46. bool
  47. select GENERIC_ALLOCATOR
  48. config HAVE_PROC_CPU
  49. bool
  50. config NO_IOPORT
  51. bool
  52. config EISA
  53. bool
  54. ---help---
  55. The Extended Industry Standard Architecture (EISA) bus was
  56. developed as an open alternative to the IBM MicroChannel bus.
  57. The EISA bus provided some of the features of the IBM MicroChannel
  58. bus while maintaining backward compatibility with cards made for
  59. the older ISA bus. The EISA bus saw limited use between 1988 and
  60. 1995 when it was made obsolete by the PCI bus.
  61. Say Y here if you are building a kernel for an EISA-based machine.
  62. Otherwise, say N.
  63. config SBUS
  64. bool
  65. config MCA
  66. bool
  67. help
  68. MicroChannel Architecture is found in some IBM PS/2 machines and
  69. laptops. It is a bus system similar to PCI or ISA. See
  70. <file:Documentation/mca.txt> (and especially the web page given
  71. there) before attempting to build an MCA bus kernel.
  72. config GENERIC_HARDIRQS
  73. bool
  74. default y
  75. config STACKTRACE_SUPPORT
  76. bool
  77. default y
  78. config HAVE_LATENCYTOP_SUPPORT
  79. bool
  80. depends on !SMP
  81. default y
  82. config LOCKDEP_SUPPORT
  83. bool
  84. default y
  85. config TRACE_IRQFLAGS_SUPPORT
  86. bool
  87. default y
  88. config HARDIRQS_SW_RESEND
  89. bool
  90. default y
  91. config GENERIC_IRQ_PROBE
  92. bool
  93. default y
  94. config GENERIC_LOCKBREAK
  95. bool
  96. default y
  97. depends on SMP && PREEMPT
  98. config RWSEM_GENERIC_SPINLOCK
  99. bool
  100. default y
  101. config RWSEM_XCHGADD_ALGORITHM
  102. bool
  103. config ARCH_HAS_ILOG2_U32
  104. bool
  105. config ARCH_HAS_ILOG2_U64
  106. bool
  107. config ARCH_HAS_CPUFREQ
  108. bool
  109. help
  110. Internal node to signify that the ARCH has CPUFREQ support
  111. and that the relevant menu configurations are displayed for
  112. it.
  113. config GENERIC_HWEIGHT
  114. bool
  115. default y
  116. config GENERIC_CALIBRATE_DELAY
  117. bool
  118. default y
  119. config ARCH_MAY_HAVE_PC_FDC
  120. bool
  121. config ZONE_DMA
  122. bool
  123. config GENERIC_ISA_DMA
  124. bool
  125. config FIQ
  126. bool
  127. config ARCH_MTD_XIP
  128. bool
  129. config GENERIC_HARDIRQS_NO__DO_IRQ
  130. def_bool y
  131. config ARM_L1_CACHE_SHIFT_6
  132. bool
  133. help
  134. Setting ARM L1 cache line size to 64 Bytes.
  135. if OPROFILE
  136. config OPROFILE_ARMV6
  137. def_bool y
  138. depends on CPU_V6 && !SMP
  139. select OPROFILE_ARM11_CORE
  140. config OPROFILE_MPCORE
  141. def_bool y
  142. depends on CPU_V6 && SMP
  143. select OPROFILE_ARM11_CORE
  144. config OPROFILE_ARM11_CORE
  145. bool
  146. config OPROFILE_ARMV7
  147. def_bool y
  148. depends on CPU_V7 && !SMP
  149. bool
  150. endif
  151. config VECTORS_BASE
  152. hex
  153. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  154. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  155. default 0x00000000
  156. help
  157. The base address of exception vectors.
  158. source "init/Kconfig"
  159. source "kernel/Kconfig.freezer"
  160. menu "System Type"
  161. config MMU
  162. bool "MMU-based Paged Memory Management Support"
  163. default y
  164. help
  165. Select if you want MMU-based virtualised addressing space
  166. support by paged memory management. If unsure, say 'Y'.
  167. choice
  168. prompt "ARM system type"
  169. default ARCH_VERSATILE
  170. config ARCH_AAEC2000
  171. bool "Agilent AAEC-2000 based"
  172. select CPU_ARM920T
  173. select ARM_AMBA
  174. select HAVE_CLK
  175. help
  176. This enables support for systems based on the Agilent AAEC-2000
  177. config ARCH_INTEGRATOR
  178. bool "ARM Ltd. Integrator family"
  179. select ARM_AMBA
  180. select ARCH_HAS_CPUFREQ
  181. select HAVE_CLK
  182. select COMMON_CLKDEV
  183. select ICST525
  184. help
  185. Support for ARM's Integrator platform.
  186. config ARCH_REALVIEW
  187. bool "ARM Ltd. RealView family"
  188. select ARM_AMBA
  189. select HAVE_CLK
  190. select COMMON_CLKDEV
  191. select ICST307
  192. select GENERIC_TIME
  193. select GENERIC_CLOCKEVENTS
  194. select ARCH_WANT_OPTIONAL_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 HAVE_CLK
  202. select COMMON_CLKDEV
  203. select ICST307
  204. select GENERIC_TIME
  205. select GENERIC_CLOCKEVENTS
  206. select ARCH_WANT_OPTIONAL_GPIOLIB
  207. help
  208. This enables support for ARM Ltd Versatile board.
  209. config ARCH_AT91
  210. bool "Atmel AT91"
  211. select GENERIC_GPIO
  212. select ARCH_REQUIRE_GPIOLIB
  213. select HAVE_CLK
  214. help
  215. This enables support for systems based on the Atmel AT91RM9200,
  216. AT91SAM9 and AT91CAP9 processors.
  217. config ARCH_CLPS711X
  218. bool "Cirrus Logic CLPS711x/EP721x-based"
  219. select CPU_ARM720T
  220. help
  221. Support for Cirrus Logic 711x/721x based boards.
  222. config ARCH_GEMINI
  223. bool "Cortina Systems Gemini"
  224. select CPU_FA526
  225. select GENERIC_GPIO
  226. select ARCH_REQUIRE_GPIOLIB
  227. help
  228. Support for the Cortina Systems Gemini family SoCs
  229. config ARCH_EBSA110
  230. bool "EBSA-110"
  231. select CPU_SA110
  232. select ISA
  233. select NO_IOPORT
  234. help
  235. This is an evaluation board for the StrongARM processor available
  236. from Digital. It has limited hardware on-board, including an
  237. Ethernet interface, two PCMCIA sockets, two serial ports and a
  238. parallel port.
  239. config ARCH_EP93XX
  240. bool "EP93xx-based"
  241. select CPU_ARM920T
  242. select ARM_AMBA
  243. select ARM_VIC
  244. select GENERIC_GPIO
  245. select HAVE_CLK
  246. select COMMON_CLKDEV
  247. select ARCH_REQUIRE_GPIOLIB
  248. select ARCH_HAS_HOLES_MEMORYMODEL
  249. help
  250. This enables support for the Cirrus EP93xx series of CPUs.
  251. config ARCH_FOOTBRIDGE
  252. bool "FootBridge"
  253. select CPU_SA110
  254. select FOOTBRIDGE
  255. help
  256. Support for systems based on the DC21285 companion chip
  257. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  258. config ARCH_MXC
  259. bool "Freescale MXC/iMX-based"
  260. select GENERIC_TIME
  261. select GENERIC_CLOCKEVENTS
  262. select ARCH_MTD_XIP
  263. select GENERIC_GPIO
  264. select ARCH_REQUIRE_GPIOLIB
  265. select HAVE_CLK
  266. help
  267. Support for Freescale MXC/iMX-based family of processors
  268. config ARCH_STMP3XXX
  269. bool "Freescale STMP3xxx"
  270. select CPU_ARM926T
  271. select HAVE_CLK
  272. select COMMON_CLKDEV
  273. select ARCH_REQUIRE_GPIOLIB
  274. select GENERIC_TIME
  275. select GENERIC_CLOCKEVENTS
  276. select GENERIC_GPIO
  277. select USB_ARCH_HAS_EHCI
  278. help
  279. Support for systems based on the Freescale 3xxx CPUs.
  280. config ARCH_NETX
  281. bool "Hilscher NetX based"
  282. select CPU_ARM926T
  283. select ARM_VIC
  284. select GENERIC_CLOCKEVENTS
  285. select GENERIC_TIME
  286. help
  287. This enables support for systems based on the Hilscher NetX Soc
  288. config ARCH_H720X
  289. bool "Hynix HMS720x-based"
  290. select CPU_ARM720T
  291. select ISA_DMA_API
  292. help
  293. This enables support for systems based on the Hynix HMS720x
  294. config ARCH_NOMADIK
  295. bool "STMicroelectronics Nomadik"
  296. select ARM_AMBA
  297. select ARM_VIC
  298. select CPU_ARM926T
  299. select HAVE_CLK
  300. select COMMON_CLKDEV
  301. select GENERIC_TIME
  302. select GENERIC_CLOCKEVENTS
  303. select GENERIC_GPIO
  304. select ARCH_REQUIRE_GPIOLIB
  305. help
  306. Support for the Nomadik platform by ST-Ericsson
  307. config ARCH_IOP13XX
  308. bool "IOP13xx-based"
  309. depends on MMU
  310. select CPU_XSC3
  311. select PLAT_IOP
  312. select PCI
  313. select ARCH_SUPPORTS_MSI
  314. select VMSPLIT_1G
  315. help
  316. Support for Intel's IOP13XX (XScale) family of processors.
  317. config ARCH_IOP32X
  318. bool "IOP32x-based"
  319. depends on MMU
  320. select CPU_XSCALE
  321. select PLAT_IOP
  322. select PCI
  323. select GENERIC_GPIO
  324. select ARCH_REQUIRE_GPIOLIB
  325. help
  326. Support for Intel's 80219 and IOP32X (XScale) family of
  327. processors.
  328. config ARCH_IOP33X
  329. bool "IOP33x-based"
  330. depends on MMU
  331. select CPU_XSCALE
  332. select PLAT_IOP
  333. select PCI
  334. select GENERIC_GPIO
  335. select ARCH_REQUIRE_GPIOLIB
  336. help
  337. Support for Intel's IOP33X (XScale) family of processors.
  338. config ARCH_IXP23XX
  339. bool "IXP23XX-based"
  340. depends on MMU
  341. select CPU_XSC3
  342. select PCI
  343. help
  344. Support for Intel's IXP23xx (XScale) family of processors.
  345. config ARCH_IXP2000
  346. bool "IXP2400/2800-based"
  347. depends on MMU
  348. select CPU_XSCALE
  349. select PCI
  350. help
  351. Support for Intel's IXP2400/2800 (XScale) family of processors.
  352. config ARCH_IXP4XX
  353. bool "IXP4xx-based"
  354. depends on MMU
  355. select CPU_XSCALE
  356. select GENERIC_GPIO
  357. select GENERIC_TIME
  358. select GENERIC_CLOCKEVENTS
  359. select DMABOUNCE if PCI
  360. help
  361. Support for Intel's IXP4XX (XScale) family of processors.
  362. config ARCH_L7200
  363. bool "LinkUp-L7200"
  364. select CPU_ARM720T
  365. select FIQ
  366. help
  367. Say Y here if you intend to run this kernel on a LinkUp Systems
  368. L7200 Software Development Board which uses an ARM720T processor.
  369. Information on this board can be obtained at:
  370. <http://www.linkupsys.com/>
  371. If you have any questions or comments about the Linux kernel port
  372. to this board, send e-mail to <sjhill@cotw.com>.
  373. config ARCH_DOVE
  374. bool "Marvell Dove"
  375. select PCI
  376. select GENERIC_GPIO
  377. select ARCH_REQUIRE_GPIOLIB
  378. select GENERIC_TIME
  379. select GENERIC_CLOCKEVENTS
  380. select PLAT_ORION
  381. help
  382. Support for the Marvell Dove SoC 88AP510
  383. config ARCH_KIRKWOOD
  384. bool "Marvell Kirkwood"
  385. select CPU_FEROCEON
  386. select PCI
  387. select GENERIC_GPIO
  388. select ARCH_REQUIRE_GPIOLIB
  389. select GENERIC_TIME
  390. select GENERIC_CLOCKEVENTS
  391. select PLAT_ORION
  392. help
  393. Support for the following Marvell Kirkwood series SoCs:
  394. 88F6180, 88F6192 and 88F6281.
  395. config ARCH_LOKI
  396. bool "Marvell Loki (88RC8480)"
  397. select CPU_FEROCEON
  398. select GENERIC_TIME
  399. select GENERIC_CLOCKEVENTS
  400. select PLAT_ORION
  401. help
  402. Support for the Marvell Loki (88RC8480) SoC.
  403. config ARCH_MV78XX0
  404. bool "Marvell MV78xx0"
  405. select CPU_FEROCEON
  406. select PCI
  407. select GENERIC_GPIO
  408. select ARCH_REQUIRE_GPIOLIB
  409. select GENERIC_TIME
  410. select GENERIC_CLOCKEVENTS
  411. select PLAT_ORION
  412. help
  413. Support for the following Marvell MV78xx0 series SoCs:
  414. MV781x0, MV782x0.
  415. config ARCH_ORION5X
  416. bool "Marvell Orion"
  417. depends on MMU
  418. select CPU_FEROCEON
  419. select PCI
  420. select GENERIC_GPIO
  421. select ARCH_REQUIRE_GPIOLIB
  422. select GENERIC_TIME
  423. select GENERIC_CLOCKEVENTS
  424. select PLAT_ORION
  425. help
  426. Support for the following Marvell Orion 5x series SoCs:
  427. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  428. Orion-2 (5281), Orion-1-90 (6183).
  429. config ARCH_MMP
  430. bool "Marvell PXA168/910"
  431. depends on MMU
  432. select GENERIC_GPIO
  433. select ARCH_REQUIRE_GPIOLIB
  434. select HAVE_CLK
  435. select COMMON_CLKDEV
  436. select GENERIC_TIME
  437. select GENERIC_CLOCKEVENTS
  438. select TICK_ONESHOT
  439. select PLAT_PXA
  440. help
  441. Support for Marvell's PXA168/910 processor line.
  442. config ARCH_KS8695
  443. bool "Micrel/Kendin KS8695"
  444. select CPU_ARM922T
  445. select GENERIC_GPIO
  446. select ARCH_REQUIRE_GPIOLIB
  447. help
  448. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  449. System-on-Chip devices.
  450. config ARCH_NS9XXX
  451. bool "NetSilicon NS9xxx"
  452. select CPU_ARM926T
  453. select GENERIC_GPIO
  454. select GENERIC_TIME
  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 GENERIC_GPIO
  466. select HAVE_CLK
  467. select COMMON_CLKDEV
  468. select GENERIC_TIME
  469. select GENERIC_CLOCKEVENTS
  470. help
  471. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  472. At present, the w90x900 has been renamed nuc900, regarding
  473. the ARM series product line, you can login the following
  474. link address to know more.
  475. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  476. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  477. config ARCH_NUC93X
  478. bool "Nuvoton NUC93X CPU"
  479. select CPU_ARM926T
  480. select HAVE_CLK
  481. select COMMON_CLKDEV
  482. help
  483. Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
  484. low-power and high performance MPEG-4/JPEG multimedia controller chip.
  485. config ARCH_PNX4008
  486. bool "Philips Nexperia PNX4008 Mobile"
  487. select CPU_ARM926T
  488. select HAVE_CLK
  489. select COMMON_CLKDEV
  490. help
  491. This enables support for Philips PNX4008 mobile platform.
  492. config ARCH_PXA
  493. bool "PXA2xx/PXA3xx-based"
  494. depends on MMU
  495. select ARCH_MTD_XIP
  496. select ARCH_HAS_CPUFREQ
  497. select GENERIC_GPIO
  498. select HAVE_CLK
  499. select COMMON_CLKDEV
  500. select ARCH_REQUIRE_GPIOLIB
  501. select GENERIC_TIME
  502. select GENERIC_CLOCKEVENTS
  503. select TICK_ONESHOT
  504. select PLAT_PXA
  505. help
  506. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  507. config ARCH_MSM
  508. bool "Qualcomm MSM"
  509. select CPU_V6
  510. select GENERIC_TIME
  511. select GENERIC_CLOCKEVENTS
  512. help
  513. Support for Qualcomm MSM7K based systems. This runs on the ARM11
  514. apps processor of the MSM7K and depends on a shared memory
  515. interface to the ARM9 modem processor which runs the baseband stack
  516. and controls some vital subsystems (clock and power control, etc).
  517. config ARCH_RPC
  518. bool "RiscPC"
  519. select ARCH_ACORN
  520. select FIQ
  521. select TIMER_ACORN
  522. select ARCH_MAY_HAVE_PC_FDC
  523. select HAVE_PATA_PLATFORM
  524. select ISA_DMA_API
  525. select NO_IOPORT
  526. select ARCH_SPARSEMEM_ENABLE
  527. help
  528. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  529. CD-ROM interface, serial and parallel port, and the floppy drive.
  530. config ARCH_SA1100
  531. bool "SA1100-based"
  532. select CPU_SA1100
  533. select ISA
  534. select ARCH_SPARSEMEM_ENABLE
  535. select ARCH_MTD_XIP
  536. select ARCH_HAS_CPUFREQ
  537. select CPU_FREQ
  538. select GENERIC_GPIO
  539. select GENERIC_TIME
  540. select GENERIC_CLOCKEVENTS
  541. select HAVE_CLK
  542. select TICK_ONESHOT
  543. select ARCH_REQUIRE_GPIOLIB
  544. help
  545. Support for StrongARM 11x0 based boards.
  546. config ARCH_S3C2410
  547. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  548. select GENERIC_GPIO
  549. select ARCH_HAS_CPUFREQ
  550. select HAVE_CLK
  551. help
  552. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  553. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  554. the Samsung SMDK2410 development board (and derivatives).
  555. config ARCH_S3C64XX
  556. bool "Samsung S3C64XX"
  557. select GENERIC_GPIO
  558. select HAVE_CLK
  559. select ARCH_HAS_CPUFREQ
  560. help
  561. Samsung S3C64XX series based systems
  562. config ARCH_S5PC1XX
  563. bool "Samsung S5PC1XX"
  564. select GENERIC_GPIO
  565. select HAVE_CLK
  566. select CPU_V7
  567. select ARM_L1_CACHE_SHIFT_6
  568. help
  569. Samsung S5PC1XX series based systems
  570. config ARCH_SHARK
  571. bool "Shark"
  572. select CPU_SA110
  573. select ISA
  574. select ISA_DMA
  575. select ZONE_DMA
  576. select PCI
  577. help
  578. Support for the StrongARM based Digital DNARD machine, also known
  579. as "Shark" (<http://www.shark-linux.de/shark.html>).
  580. config ARCH_LH7A40X
  581. bool "Sharp LH7A40X"
  582. select CPU_ARM922T
  583. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  584. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  585. help
  586. Say Y here for systems based on one of the Sharp LH7A40X
  587. System on a Chip processors. These CPUs include an ARM922T
  588. core with a wide array of integrated devices for
  589. hand-held and low-power applications.
  590. config ARCH_U300
  591. bool "ST-Ericsson U300 Series"
  592. depends on MMU
  593. select CPU_ARM926T
  594. select HAVE_TCM
  595. select ARM_AMBA
  596. select ARM_VIC
  597. select GENERIC_TIME
  598. select GENERIC_CLOCKEVENTS
  599. select HAVE_CLK
  600. select COMMON_CLKDEV
  601. select GENERIC_GPIO
  602. help
  603. Support for ST-Ericsson U300 series mobile platforms.
  604. config ARCH_DAVINCI
  605. bool "TI DaVinci"
  606. select CPU_ARM926T
  607. select GENERIC_TIME
  608. select GENERIC_CLOCKEVENTS
  609. select GENERIC_GPIO
  610. select ARCH_REQUIRE_GPIOLIB
  611. select HAVE_CLK
  612. select ZONE_DMA
  613. select HAVE_IDE
  614. select COMMON_CLKDEV
  615. select GENERIC_ALLOCATOR
  616. select ARCH_HAS_HOLES_MEMORYMODEL
  617. help
  618. Support for TI's DaVinci platform.
  619. config ARCH_OMAP
  620. bool "TI OMAP"
  621. select GENERIC_GPIO
  622. select HAVE_CLK
  623. select ARCH_REQUIRE_GPIOLIB
  624. select ARCH_HAS_CPUFREQ
  625. select GENERIC_TIME
  626. select GENERIC_CLOCKEVENTS
  627. select ARCH_HAS_HOLES_MEMORYMODEL
  628. help
  629. Support for TI's OMAP platform (OMAP1 and OMAP2).
  630. config ARCH_BCMRING
  631. bool "Broadcom BCMRING"
  632. depends on MMU
  633. select CPU_V6
  634. select ARM_AMBA
  635. select COMMON_CLKDEV
  636. select GENERIC_TIME
  637. select GENERIC_CLOCKEVENTS
  638. select ARCH_WANT_OPTIONAL_GPIOLIB
  639. help
  640. Support for Broadcom's BCMRing platform.
  641. config ARCH_U8500
  642. bool "ST-Ericsson U8500 Series"
  643. select CPU_V7
  644. select ARM_AMBA
  645. select GENERIC_TIME
  646. select GENERIC_CLOCKEVENTS
  647. select COMMON_CLKDEV
  648. help
  649. Support for ST-Ericsson's Ux500 architecture
  650. endchoice
  651. source "arch/arm/mach-aaec2000/Kconfig"
  652. source "arch/arm/mach-at91/Kconfig"
  653. source "arch/arm/mach-bcmring/Kconfig"
  654. source "arch/arm/mach-clps711x/Kconfig"
  655. source "arch/arm/mach-davinci/Kconfig"
  656. source "arch/arm/mach-dove/Kconfig"
  657. source "arch/arm/mach-ep93xx/Kconfig"
  658. source "arch/arm/mach-footbridge/Kconfig"
  659. source "arch/arm/mach-gemini/Kconfig"
  660. source "arch/arm/mach-h720x/Kconfig"
  661. source "arch/arm/mach-integrator/Kconfig"
  662. source "arch/arm/mach-iop32x/Kconfig"
  663. source "arch/arm/mach-iop33x/Kconfig"
  664. source "arch/arm/mach-iop13xx/Kconfig"
  665. source "arch/arm/mach-ixp4xx/Kconfig"
  666. source "arch/arm/mach-ixp2000/Kconfig"
  667. source "arch/arm/mach-ixp23xx/Kconfig"
  668. source "arch/arm/mach-kirkwood/Kconfig"
  669. source "arch/arm/mach-ks8695/Kconfig"
  670. source "arch/arm/mach-lh7a40x/Kconfig"
  671. source "arch/arm/mach-loki/Kconfig"
  672. source "arch/arm/mach-msm/Kconfig"
  673. source "arch/arm/mach-mv78xx0/Kconfig"
  674. source "arch/arm/plat-mxc/Kconfig"
  675. source "arch/arm/mach-netx/Kconfig"
  676. source "arch/arm/mach-nomadik/Kconfig"
  677. source "arch/arm/plat-nomadik/Kconfig"
  678. source "arch/arm/mach-ns9xxx/Kconfig"
  679. source "arch/arm/mach-nuc93x/Kconfig"
  680. source "arch/arm/plat-omap/Kconfig"
  681. source "arch/arm/mach-omap1/Kconfig"
  682. source "arch/arm/mach-omap2/Kconfig"
  683. source "arch/arm/mach-orion5x/Kconfig"
  684. source "arch/arm/mach-pxa/Kconfig"
  685. source "arch/arm/plat-pxa/Kconfig"
  686. source "arch/arm/mach-mmp/Kconfig"
  687. source "arch/arm/mach-realview/Kconfig"
  688. source "arch/arm/mach-sa1100/Kconfig"
  689. source "arch/arm/plat-samsung/Kconfig"
  690. source "arch/arm/plat-s3c24xx/Kconfig"
  691. source "arch/arm/plat-s3c64xx/Kconfig"
  692. source "arch/arm/plat-s3c/Kconfig"
  693. source "arch/arm/plat-s5pc1xx/Kconfig"
  694. if ARCH_S3C2410
  695. source "arch/arm/mach-s3c2400/Kconfig"
  696. source "arch/arm/mach-s3c2410/Kconfig"
  697. source "arch/arm/mach-s3c2412/Kconfig"
  698. source "arch/arm/mach-s3c2440/Kconfig"
  699. source "arch/arm/mach-s3c2442/Kconfig"
  700. source "arch/arm/mach-s3c2443/Kconfig"
  701. endif
  702. if ARCH_S3C64XX
  703. source "arch/arm/mach-s3c6400/Kconfig"
  704. source "arch/arm/mach-s3c6410/Kconfig"
  705. endif
  706. source "arch/arm/plat-stmp3xxx/Kconfig"
  707. if ARCH_S5PC1XX
  708. source "arch/arm/mach-s5pc100/Kconfig"
  709. endif
  710. source "arch/arm/mach-u300/Kconfig"
  711. source "arch/arm/mach-ux500/Kconfig"
  712. source "arch/arm/mach-versatile/Kconfig"
  713. source "arch/arm/mach-w90x900/Kconfig"
  714. # Definitions to make life easier
  715. config ARCH_ACORN
  716. bool
  717. config PLAT_IOP
  718. bool
  719. select GENERIC_CLOCKEVENTS
  720. select GENERIC_TIME
  721. config PLAT_ORION
  722. bool
  723. config PLAT_PXA
  724. bool
  725. source arch/arm/mm/Kconfig
  726. config IWMMXT
  727. bool "Enable iWMMXt support"
  728. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
  729. default y if PXA27x || PXA3xx || ARCH_MMP
  730. help
  731. Enable support for iWMMXt context switching at run time if
  732. running on a CPU that supports it.
  733. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  734. config XSCALE_PMU
  735. bool
  736. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  737. default y
  738. config CPU_HAS_PMU
  739. depends on CPU_V6 || CPU_V7 || XSCALE_PMU
  740. default y
  741. bool
  742. if !MMU
  743. source "arch/arm/Kconfig-nommu"
  744. endif
  745. config ARM_ERRATA_411920
  746. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  747. depends on CPU_V6 && !SMP
  748. help
  749. Invalidation of the Instruction Cache operation can
  750. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  751. It does not affect the MPCore. This option enables the ARM Ltd.
  752. recommended workaround.
  753. config ARM_ERRATA_430973
  754. bool "ARM errata: Stale prediction on replaced interworking branch"
  755. depends on CPU_V7
  756. help
  757. This option enables the workaround for the 430973 Cortex-A8
  758. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  759. interworking branch is replaced with another code sequence at the
  760. same virtual address, whether due to self-modifying code or virtual
  761. to physical address re-mapping, Cortex-A8 does not recover from the
  762. stale interworking branch prediction. This results in Cortex-A8
  763. executing the new code sequence in the incorrect ARM or Thumb state.
  764. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  765. and also flushes the branch target cache at every context switch.
  766. Note that setting specific bits in the ACTLR register may not be
  767. available in non-secure mode.
  768. config ARM_ERRATA_458693
  769. bool "ARM errata: Processor deadlock when a false hazard is created"
  770. depends on CPU_V7
  771. help
  772. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  773. erratum. For very specific sequences of memory operations, it is
  774. possible for a hazard condition intended for a cache line to instead
  775. be incorrectly associated with a different cache line. This false
  776. hazard might then cause a processor deadlock. The workaround enables
  777. the L1 caching of the NEON accesses and disables the PLD instruction
  778. in the ACTLR register. Note that setting specific bits in the ACTLR
  779. register may not be available in non-secure mode.
  780. config ARM_ERRATA_460075
  781. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  782. depends on CPU_V7
  783. help
  784. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  785. erratum. Any asynchronous access to the L2 cache may encounter a
  786. situation in which recent store transactions to the L2 cache are lost
  787. and overwritten with stale memory contents from external memory. The
  788. workaround disables the write-allocate mode for the L2 cache via the
  789. ACTLR register. Note that setting specific bits in the ACTLR register
  790. may not be available in non-secure mode.
  791. config PL310_ERRATA_588369
  792. bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
  793. depends on CACHE_L2X0 && ARCH_OMAP4
  794. help
  795. The PL310 L2 cache controller implements three types of Clean &
  796. Invalidate maintenance operations: by Physical Address
  797. (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
  798. They are architecturally defined to behave as the execution of a
  799. clean operation followed immediately by an invalidate operation,
  800. both performing to the same memory location. This functionality
  801. is not correctly implemented in PL310 as clean lines are not
  802. invalidated as a result of these operations. Note that this errata
  803. uses Texas Instrument's secure monitor api.
  804. endmenu
  805. source "arch/arm/common/Kconfig"
  806. config FORCE_MAX_ZONEORDER
  807. int
  808. depends on SA1111
  809. default "9"
  810. menu "Bus support"
  811. config ARM_AMBA
  812. bool
  813. config ISA
  814. bool
  815. help
  816. Find out whether you have ISA slots on your motherboard. ISA is the
  817. name of a bus system, i.e. the way the CPU talks to the other stuff
  818. inside your box. Other bus systems are PCI, EISA, MicroChannel
  819. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  820. newer boards don't support it. If you have ISA, say Y, otherwise N.
  821. # Select ISA DMA controller support
  822. config ISA_DMA
  823. bool
  824. select ISA_DMA_API
  825. # Select ISA DMA interface
  826. config ISA_DMA_API
  827. bool
  828. config PCI
  829. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  830. help
  831. Find out whether you have a PCI motherboard. PCI is the name of a
  832. bus system, i.e. the way the CPU talks to the other stuff inside
  833. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  834. VESA. If you have PCI, say Y, otherwise N.
  835. config PCI_SYSCALL
  836. def_bool PCI
  837. # Select the host bridge type
  838. config PCI_HOST_VIA82C505
  839. bool
  840. depends on PCI && ARCH_SHARK
  841. default y
  842. config PCI_HOST_ITE8152
  843. bool
  844. depends on PCI && MACH_ARMCORE
  845. default y
  846. select DMABOUNCE
  847. source "drivers/pci/Kconfig"
  848. source "drivers/pcmcia/Kconfig"
  849. endmenu
  850. menu "Kernel Features"
  851. source "kernel/time/Kconfig"
  852. config SMP
  853. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  854. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
  855. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
  856. depends on GENERIC_CLOCKEVENTS
  857. select USE_GENERIC_SMP_HELPERS
  858. select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
  859. help
  860. This enables support for systems with more than one CPU. If you have
  861. a system with only one CPU, like most personal computers, say N. If
  862. you have a system with more than one CPU, say Y.
  863. If you say N here, the kernel will run on single and multiprocessor
  864. machines, but will use only one CPU of a multiprocessor machine. If
  865. you say Y here, the kernel will run on many, but not all, single
  866. processor machines. On a single processor machine, the kernel will
  867. run faster if you say N here.
  868. See also <file:Documentation/i386/IO-APIC.txt>,
  869. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  870. <http://www.linuxdoc.org/docs.html#howto>.
  871. If you don't know what to do here, say N.
  872. config HAVE_ARM_SCU
  873. bool
  874. depends on SMP
  875. help
  876. This option enables support for the ARM system coherency unit
  877. config HAVE_ARM_TWD
  878. bool
  879. depends on SMP
  880. help
  881. This options enables support for the ARM timer and watchdog unit
  882. choice
  883. prompt "Memory split"
  884. default VMSPLIT_3G
  885. help
  886. Select the desired split between kernel and user memory.
  887. If you are not absolutely sure what you are doing, leave this
  888. option alone!
  889. config VMSPLIT_3G
  890. bool "3G/1G user/kernel split"
  891. config VMSPLIT_2G
  892. bool "2G/2G user/kernel split"
  893. config VMSPLIT_1G
  894. bool "1G/3G user/kernel split"
  895. endchoice
  896. config PAGE_OFFSET
  897. hex
  898. default 0x40000000 if VMSPLIT_1G
  899. default 0x80000000 if VMSPLIT_2G
  900. default 0xC0000000
  901. config NR_CPUS
  902. int "Maximum number of CPUs (2-32)"
  903. range 2 32
  904. depends on SMP
  905. default "4"
  906. config HOTPLUG_CPU
  907. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  908. depends on SMP && HOTPLUG && EXPERIMENTAL
  909. help
  910. Say Y here to experiment with turning CPUs off and on. CPUs
  911. can be controlled through /sys/devices/system/cpu.
  912. config LOCAL_TIMERS
  913. bool "Use local timer interrupts"
  914. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
  915. REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
  916. default y
  917. select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
  918. help
  919. Enable support for local timers on SMP platforms, rather then the
  920. legacy IPI broadcast method. Local timers allows the system
  921. accounting to be spread across the timer interval, preventing a
  922. "thundering herd" at every timer tick.
  923. source kernel/Kconfig.preempt
  924. config HZ
  925. int
  926. default 128 if ARCH_L7200
  927. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  928. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  929. default AT91_TIMER_HZ if ARCH_AT91
  930. default 100
  931. config THUMB2_KERNEL
  932. bool "Compile the kernel in Thumb-2 mode"
  933. depends on CPU_V7 && EXPERIMENTAL
  934. select AEABI
  935. select ARM_ASM_UNIFIED
  936. help
  937. By enabling this option, the kernel will be compiled in
  938. Thumb-2 mode. A compiler/assembler that understand the unified
  939. ARM-Thumb syntax is needed.
  940. If unsure, say N.
  941. config ARM_ASM_UNIFIED
  942. bool
  943. config AEABI
  944. bool "Use the ARM EABI to compile the kernel"
  945. help
  946. This option allows for the kernel to be compiled using the latest
  947. ARM ABI (aka EABI). This is only useful if you are using a user
  948. space environment that is also compiled with EABI.
  949. Since there are major incompatibilities between the legacy ABI and
  950. EABI, especially with regard to structure member alignment, this
  951. option also changes the kernel syscall calling convention to
  952. disambiguate both ABIs and allow for backward compatibility support
  953. (selected with CONFIG_OABI_COMPAT).
  954. To use this you need GCC version 4.0.0 or later.
  955. config OABI_COMPAT
  956. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  957. depends on AEABI && EXPERIMENTAL
  958. default y
  959. help
  960. This option preserves the old syscall interface along with the
  961. new (ARM EABI) one. It also provides a compatibility layer to
  962. intercept syscalls that have structure arguments which layout
  963. in memory differs between the legacy ABI and the new ARM EABI
  964. (only for non "thumb" binaries). This option adds a tiny
  965. overhead to all syscalls and produces a slightly larger kernel.
  966. If you know you'll be using only pure EABI user space then you
  967. can say N here. If this option is not selected and you attempt
  968. to execute a legacy ABI binary then the result will be
  969. UNPREDICTABLE (in fact it can be predicted that it won't work
  970. at all). If in doubt say Y.
  971. config ARCH_HAS_HOLES_MEMORYMODEL
  972. bool
  973. # Discontigmem is deprecated
  974. config ARCH_DISCONTIGMEM_ENABLE
  975. bool
  976. config ARCH_SPARSEMEM_ENABLE
  977. bool
  978. config ARCH_SPARSEMEM_DEFAULT
  979. def_bool ARCH_SPARSEMEM_ENABLE
  980. config ARCH_SELECT_MEMORY_MODEL
  981. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  982. config NODES_SHIFT
  983. int
  984. default "4" if ARCH_LH7A40X
  985. default "2"
  986. depends on NEED_MULTIPLE_NODES
  987. config HIGHMEM
  988. bool "High Memory Support (EXPERIMENTAL)"
  989. depends on MMU && EXPERIMENTAL
  990. help
  991. The address space of ARM processors is only 4 Gigabytes large
  992. and it has to accommodate user address space, kernel address
  993. space as well as some memory mapped IO. That means that, if you
  994. have a large amount of physical memory and/or IO, not all of the
  995. memory can be "permanently mapped" by the kernel. The physical
  996. memory that is not permanently mapped is called "high memory".
  997. Depending on the selected kernel/user memory split, minimum
  998. vmalloc space and actual amount of RAM, you may not need this
  999. option which should result in a slightly faster kernel.
  1000. If unsure, say n.
  1001. config HIGHPTE
  1002. bool "Allocate 2nd-level pagetables from highmem"
  1003. depends on HIGHMEM
  1004. depends on !OUTER_CACHE
  1005. config HW_PERF_EVENTS
  1006. bool "Enable hardware performance counter support for perf events"
  1007. depends on PERF_EVENTS && CPU_HAS_PMU && (CPU_V6 || CPU_V7)
  1008. default y
  1009. help
  1010. Enable hardware performance counter support for perf events. If
  1011. disabled, perf events will use software events only.
  1012. source "mm/Kconfig"
  1013. config LEDS
  1014. bool "Timer and CPU usage LEDs"
  1015. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  1016. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  1017. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  1018. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  1019. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  1020. ARCH_AT91 || ARCH_DAVINCI || \
  1021. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  1022. help
  1023. If you say Y here, the LEDs on your machine will be used
  1024. to provide useful information about your current system status.
  1025. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  1026. be able to select which LEDs are active using the options below. If
  1027. you are compiling a kernel for the EBSA-110 or the LART however, the
  1028. red LED will simply flash regularly to indicate that the system is
  1029. still functional. It is safe to say Y here if you have a CATS
  1030. system, but the driver will do nothing.
  1031. config LEDS_TIMER
  1032. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  1033. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1034. || MACH_OMAP_PERSEUS2
  1035. depends on LEDS
  1036. depends on !GENERIC_CLOCKEVENTS
  1037. default y if ARCH_EBSA110
  1038. help
  1039. If you say Y here, one of the system LEDs (the green one on the
  1040. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1041. will flash regularly to indicate that the system is still
  1042. operational. This is mainly useful to kernel hackers who are
  1043. debugging unstable kernels.
  1044. The LART uses the same LED for both Timer LED and CPU usage LED
  1045. functions. You may choose to use both, but the Timer LED function
  1046. will overrule the CPU usage LED.
  1047. config LEDS_CPU
  1048. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1049. !ARCH_OMAP) \
  1050. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1051. || MACH_OMAP_PERSEUS2
  1052. depends on LEDS
  1053. help
  1054. If you say Y here, the red LED will be used to give a good real
  1055. time indication of CPU usage, by lighting whenever the idle task
  1056. is not currently executing.
  1057. The LART uses the same LED for both Timer LED and CPU usage LED
  1058. functions. You may choose to use both, but the Timer LED function
  1059. will overrule the CPU usage LED.
  1060. config ALIGNMENT_TRAP
  1061. bool
  1062. depends on CPU_CP15_MMU
  1063. default y if !ARCH_EBSA110
  1064. select HAVE_PROC_CPU if PROC_FS
  1065. help
  1066. ARM processors cannot fetch/store information which is not
  1067. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1068. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1069. fetch/store instructions will be emulated in software if you say
  1070. here, which has a severe performance impact. This is necessary for
  1071. correct operation of some network protocols. With an IP-only
  1072. configuration it is safe to say N, otherwise say Y.
  1073. config UACCESS_WITH_MEMCPY
  1074. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1075. depends on MMU && EXPERIMENTAL
  1076. default y if CPU_FEROCEON
  1077. help
  1078. Implement faster copy_to_user and clear_user methods for CPU
  1079. cores where a 8-word STM instruction give significantly higher
  1080. memory write throughput than a sequence of individual 32bit stores.
  1081. A possible side effect is a slight increase in scheduling latency
  1082. between threads sharing the same address space if they invoke
  1083. such copy operations with large buffers.
  1084. However, if the CPU data cache is using a write-allocate mode,
  1085. this option is unlikely to provide any performance gain.
  1086. endmenu
  1087. menu "Boot options"
  1088. # Compressed boot loader in ROM. Yes, we really want to ask about
  1089. # TEXT and BSS so we preserve their values in the config files.
  1090. config ZBOOT_ROM_TEXT
  1091. hex "Compressed ROM boot loader base address"
  1092. default "0"
  1093. help
  1094. The physical address at which the ROM-able zImage is to be
  1095. placed in the target. Platforms which normally make use of
  1096. ROM-able zImage formats normally set this to a suitable
  1097. value in their defconfig file.
  1098. If ZBOOT_ROM is not enabled, this has no effect.
  1099. config ZBOOT_ROM_BSS
  1100. hex "Compressed ROM boot loader BSS address"
  1101. default "0"
  1102. help
  1103. The base address of an area of read/write memory in the target
  1104. for the ROM-able zImage which must be available while the
  1105. decompressor is running. It must be large enough to hold the
  1106. entire decompressed kernel plus an additional 128 KiB.
  1107. Platforms which normally make use of ROM-able zImage formats
  1108. normally set this to a suitable value in their defconfig file.
  1109. If ZBOOT_ROM is not enabled, this has no effect.
  1110. config ZBOOT_ROM
  1111. bool "Compressed boot loader in ROM/flash"
  1112. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1113. help
  1114. Say Y here if you intend to execute your compressed kernel image
  1115. (zImage) directly from ROM or flash. If unsure, say N.
  1116. config CMDLINE
  1117. string "Default kernel command string"
  1118. default ""
  1119. help
  1120. On some architectures (EBSA110 and CATS), there is currently no way
  1121. for the boot loader to pass arguments to the kernel. For these
  1122. architectures, you should supply some command-line options at build
  1123. time by entering them here. As a minimum, you should specify the
  1124. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1125. config XIP_KERNEL
  1126. bool "Kernel Execute-In-Place from ROM"
  1127. depends on !ZBOOT_ROM
  1128. help
  1129. Execute-In-Place allows the kernel to run from non-volatile storage
  1130. directly addressable by the CPU, such as NOR flash. This saves RAM
  1131. space since the text section of the kernel is not loaded from flash
  1132. to RAM. Read-write sections, such as the data section and stack,
  1133. are still copied to RAM. The XIP kernel is not compressed since
  1134. it has to run directly from flash, so it will take more space to
  1135. store it. The flash address used to link the kernel object files,
  1136. and for storing it, is configuration dependent. Therefore, if you
  1137. say Y here, you must know the proper physical address where to
  1138. store the kernel image depending on your own flash memory usage.
  1139. Also note that the make target becomes "make xipImage" rather than
  1140. "make zImage" or "make Image". The final kernel binary to put in
  1141. ROM memory will be arch/arm/boot/xipImage.
  1142. If unsure, say N.
  1143. config XIP_PHYS_ADDR
  1144. hex "XIP Kernel Physical Location"
  1145. depends on XIP_KERNEL
  1146. default "0x00080000"
  1147. help
  1148. This is the physical address in your flash memory the kernel will
  1149. be linked for and stored to. This address is dependent on your
  1150. own flash usage.
  1151. config KEXEC
  1152. bool "Kexec system call (EXPERIMENTAL)"
  1153. depends on EXPERIMENTAL
  1154. help
  1155. kexec is a system call that implements the ability to shutdown your
  1156. current kernel, and to start another kernel. It is like a reboot
  1157. but it is independent of the system firmware. And like a reboot
  1158. you can start any kernel with it, not just Linux.
  1159. It is an ongoing process to be certain the hardware in a machine
  1160. is properly shutdown, so do not be surprised if this code does not
  1161. initially work for you. It may help to enable device hotplugging
  1162. support.
  1163. config ATAGS_PROC
  1164. bool "Export atags in procfs"
  1165. depends on KEXEC
  1166. default y
  1167. help
  1168. Should the atags used to boot the kernel be exported in an "atags"
  1169. file in procfs. Useful with kexec.
  1170. endmenu
  1171. menu "CPU Power Management"
  1172. if ARCH_HAS_CPUFREQ
  1173. source "drivers/cpufreq/Kconfig"
  1174. config CPU_FREQ_SA1100
  1175. bool
  1176. config CPU_FREQ_SA1110
  1177. bool
  1178. config CPU_FREQ_INTEGRATOR
  1179. tristate "CPUfreq driver for ARM Integrator CPUs"
  1180. depends on ARCH_INTEGRATOR && CPU_FREQ
  1181. default y
  1182. help
  1183. This enables the CPUfreq driver for ARM Integrator CPUs.
  1184. For details, take a look at <file:Documentation/cpu-freq>.
  1185. If in doubt, say Y.
  1186. config CPU_FREQ_PXA
  1187. bool
  1188. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1189. default y
  1190. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1191. config CPU_FREQ_S3C64XX
  1192. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1193. depends on CPU_FREQ && CPU_S3C6410
  1194. config CPU_FREQ_S3C
  1195. bool
  1196. help
  1197. Internal configuration node for common cpufreq on Samsung SoC
  1198. config CPU_FREQ_S3C24XX
  1199. bool "CPUfreq driver for Samsung S3C24XX series CPUs"
  1200. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1201. select CPU_FREQ_S3C
  1202. help
  1203. This enables the CPUfreq driver for the Samsung S3C24XX family
  1204. of CPUs.
  1205. For details, take a look at <file:Documentation/cpu-freq>.
  1206. If in doubt, say N.
  1207. config CPU_FREQ_S3C24XX_PLL
  1208. bool "Support CPUfreq changing of PLL frequency"
  1209. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1210. help
  1211. Compile in support for changing the PLL frequency from the
  1212. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1213. after a frequency change, so by default it is not enabled.
  1214. This also means that the PLL tables for the selected CPU(s) will
  1215. be built which may increase the size of the kernel image.
  1216. config CPU_FREQ_S3C24XX_DEBUG
  1217. bool "Debug CPUfreq Samsung driver core"
  1218. depends on CPU_FREQ_S3C24XX
  1219. help
  1220. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1221. config CPU_FREQ_S3C24XX_IODEBUG
  1222. bool "Debug CPUfreq Samsung driver IO timing"
  1223. depends on CPU_FREQ_S3C24XX
  1224. help
  1225. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1226. config CPU_FREQ_S3C24XX_DEBUGFS
  1227. bool "Export debugfs for CPUFreq"
  1228. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1229. help
  1230. Export status information via debugfs.
  1231. endif
  1232. source "drivers/cpuidle/Kconfig"
  1233. endmenu
  1234. menu "Floating point emulation"
  1235. comment "At least one emulation must be selected"
  1236. config FPE_NWFPE
  1237. bool "NWFPE math emulation"
  1238. depends on !AEABI || OABI_COMPAT
  1239. ---help---
  1240. Say Y to include the NWFPE floating point emulator in the kernel.
  1241. This is necessary to run most binaries. Linux does not currently
  1242. support floating point hardware so you need to say Y here even if
  1243. your machine has an FPA or floating point co-processor podule.
  1244. You may say N here if you are going to load the Acorn FPEmulator
  1245. early in the bootup.
  1246. config FPE_NWFPE_XP
  1247. bool "Support extended precision"
  1248. depends on FPE_NWFPE
  1249. help
  1250. Say Y to include 80-bit support in the kernel floating-point
  1251. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1252. Note that gcc does not generate 80-bit operations by default,
  1253. so in most cases this option only enlarges the size of the
  1254. floating point emulator without any good reason.
  1255. You almost surely want to say N here.
  1256. config FPE_FASTFPE
  1257. bool "FastFPE math emulation (EXPERIMENTAL)"
  1258. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1259. ---help---
  1260. Say Y here to include the FAST floating point emulator in the kernel.
  1261. This is an experimental much faster emulator which now also has full
  1262. precision for the mantissa. It does not support any exceptions.
  1263. It is very simple, and approximately 3-6 times faster than NWFPE.
  1264. It should be sufficient for most programs. It may be not suitable
  1265. for scientific calculations, but you have to check this for yourself.
  1266. If you do not feel you need a faster FP emulation you should better
  1267. choose NWFPE.
  1268. config VFP
  1269. bool "VFP-format floating point maths"
  1270. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1271. help
  1272. Say Y to include VFP support code in the kernel. This is needed
  1273. if your hardware includes a VFP unit.
  1274. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1275. release notes and additional status information.
  1276. Say N if your target does not have VFP hardware.
  1277. config VFPv3
  1278. bool
  1279. depends on VFP
  1280. default y if CPU_V7
  1281. config NEON
  1282. bool "Advanced SIMD (NEON) Extension support"
  1283. depends on VFPv3 && CPU_V7
  1284. help
  1285. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1286. Extension.
  1287. endmenu
  1288. menu "Userspace binary formats"
  1289. source "fs/Kconfig.binfmt"
  1290. config ARTHUR
  1291. tristate "RISC OS personality"
  1292. depends on !AEABI
  1293. help
  1294. Say Y here to include the kernel code necessary if you want to run
  1295. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1296. experimental; if this sounds frightening, say N and sleep in peace.
  1297. You can also say M here to compile this support as a module (which
  1298. will be called arthur).
  1299. endmenu
  1300. menu "Power management options"
  1301. source "kernel/power/Kconfig"
  1302. config ARCH_SUSPEND_POSSIBLE
  1303. def_bool y
  1304. endmenu
  1305. source "net/Kconfig"
  1306. source "drivers/Kconfig"
  1307. source "fs/Kconfig"
  1308. source "arch/arm/Kconfig.debug"
  1309. source "security/Kconfig"
  1310. source "crypto/Kconfig"
  1311. source "lib/Kconfig"