Kconfig 31 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_IDE
  10. select RTC_LIB
  11. select SYS_SUPPORTS_APM_EMULATION
  12. select HAVE_OPROFILE
  13. select HAVE_ARCH_KGDB
  14. select HAVE_KPROBES if (!XIP_KERNEL)
  15. select HAVE_KRETPROBES if (HAVE_KPROBES)
  16. select HAVE_FTRACE if (!XIP_KERNEL)
  17. select HAVE_DYNAMIC_FTRACE if (HAVE_FTRACE)
  18. help
  19. The ARM series is a line of low-power-consumption RISC chip designs
  20. licensed by ARM Ltd and targeted at embedded applications and
  21. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  22. manufactured, but legacy ARM-based PC hardware remains popular in
  23. Europe. There is an ARM Linux project with a web page at
  24. <http://www.arm.linux.org.uk/>.
  25. config HAVE_PWM
  26. bool
  27. config SYS_SUPPORTS_APM_EMULATION
  28. bool
  29. config GENERIC_GPIO
  30. bool
  31. default n
  32. config GENERIC_TIME
  33. bool
  34. default n
  35. config GENERIC_CLOCKEVENTS
  36. bool
  37. default n
  38. config GENERIC_CLOCKEVENTS_BROADCAST
  39. bool
  40. depends on GENERIC_CLOCKEVENTS
  41. default y if SMP && !LOCAL_TIMERS
  42. config MMU
  43. bool
  44. default y
  45. config NO_IOPORT
  46. bool
  47. default n
  48. config EISA
  49. bool
  50. ---help---
  51. The Extended Industry Standard Architecture (EISA) bus was
  52. developed as an open alternative to the IBM MicroChannel bus.
  53. The EISA bus provided some of the features of the IBM MicroChannel
  54. bus while maintaining backward compatibility with cards made for
  55. the older ISA bus. The EISA bus saw limited use between 1988 and
  56. 1995 when it was made obsolete by the PCI bus.
  57. Say Y here if you are building a kernel for an EISA-based machine.
  58. Otherwise, say N.
  59. config SBUS
  60. bool
  61. config MCA
  62. bool
  63. help
  64. MicroChannel Architecture is found in some IBM PS/2 machines and
  65. laptops. It is a bus system similar to PCI or ISA. See
  66. <file:Documentation/mca.txt> (and especially the web page given
  67. there) before attempting to build an MCA bus kernel.
  68. config GENERIC_HARDIRQS
  69. bool
  70. default y
  71. config STACKTRACE_SUPPORT
  72. bool
  73. default y
  74. config HAVE_LATENCYTOP_SUPPORT
  75. bool
  76. depends on !SMP
  77. default y
  78. config LOCKDEP_SUPPORT
  79. bool
  80. default y
  81. config TRACE_IRQFLAGS_SUPPORT
  82. bool
  83. default y
  84. config HARDIRQS_SW_RESEND
  85. bool
  86. default y
  87. config GENERIC_IRQ_PROBE
  88. bool
  89. default y
  90. config GENERIC_LOCKBREAK
  91. bool
  92. default y
  93. depends on SMP && PREEMPT
  94. config RWSEM_GENERIC_SPINLOCK
  95. bool
  96. default y
  97. config RWSEM_XCHGADD_ALGORITHM
  98. bool
  99. config ARCH_HAS_ILOG2_U32
  100. bool
  101. default n
  102. config ARCH_HAS_ILOG2_U64
  103. bool
  104. default n
  105. config GENERIC_HWEIGHT
  106. bool
  107. default y
  108. config GENERIC_CALIBRATE_DELAY
  109. bool
  110. default y
  111. config ARCH_SUPPORTS_AOUT
  112. def_bool y
  113. config ARCH_MAY_HAVE_PC_FDC
  114. bool
  115. config ZONE_DMA
  116. bool
  117. default y
  118. config GENERIC_ISA_DMA
  119. bool
  120. config FIQ
  121. bool
  122. config ARCH_MTD_XIP
  123. bool
  124. config GENERIC_HARDIRQS_NO__DO_IRQ
  125. bool
  126. def_bool y
  127. if OPROFILE
  128. config OPROFILE_ARMV6
  129. def_bool y
  130. depends on CPU_V6 && !SMP
  131. select OPROFILE_ARM11_CORE
  132. config OPROFILE_MPCORE
  133. def_bool y
  134. depends on CPU_V6 && SMP
  135. select OPROFILE_ARM11_CORE
  136. config OPROFILE_ARM11_CORE
  137. bool
  138. endif
  139. config VECTORS_BASE
  140. hex
  141. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  142. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  143. default 0x00000000
  144. help
  145. The base address of exception vectors.
  146. source "init/Kconfig"
  147. menu "System Type"
  148. choice
  149. prompt "ARM system type"
  150. default ARCH_VERSATILE
  151. config ARCH_AAEC2000
  152. bool "Agilent AAEC-2000 based"
  153. select ARM_AMBA
  154. select HAVE_CLK
  155. help
  156. This enables support for systems based on the Agilent AAEC-2000
  157. config ARCH_INTEGRATOR
  158. bool "ARM Ltd. Integrator family"
  159. select ARM_AMBA
  160. select HAVE_CLK
  161. select ICST525
  162. help
  163. Support for ARM's Integrator platform.
  164. config ARCH_REALVIEW
  165. bool "ARM Ltd. RealView family"
  166. select ARM_AMBA
  167. select HAVE_CLK
  168. select ICST307
  169. select GENERIC_TIME
  170. select GENERIC_CLOCKEVENTS
  171. help
  172. This enables support for ARM Ltd RealView boards.
  173. config ARCH_VERSATILE
  174. bool "ARM Ltd. Versatile family"
  175. select ARM_AMBA
  176. select ARM_VIC
  177. select HAVE_CLK
  178. select ICST307
  179. select GENERIC_TIME
  180. select GENERIC_CLOCKEVENTS
  181. help
  182. This enables support for ARM Ltd Versatile board.
  183. config ARCH_AT91
  184. bool "Atmel AT91"
  185. select GENERIC_GPIO
  186. help
  187. This enables support for systems based on the Atmel AT91RM9200,
  188. AT91SAM9 and AT91CAP9 processors.
  189. config ARCH_CLPS7500
  190. bool "Cirrus CL-PS7500FE"
  191. select TIMER_ACORN
  192. select ISA
  193. select NO_IOPORT
  194. help
  195. Support for the Cirrus Logic PS7500FE system-on-a-chip.
  196. config ARCH_CLPS711X
  197. bool "Cirrus Logic CLPS711x/EP721x-based"
  198. help
  199. Support for Cirrus Logic 711x/721x based boards.
  200. config ARCH_EBSA110
  201. bool "EBSA-110"
  202. select ISA
  203. select NO_IOPORT
  204. help
  205. This is an evaluation board for the StrongARM processor available
  206. from Digital. It has limited hardware on-board, including an
  207. Ethernet interface, two PCMCIA sockets, two serial ports and a
  208. parallel port.
  209. config ARCH_EP93XX
  210. bool "EP93xx-based"
  211. select ARM_AMBA
  212. select ARM_VIC
  213. select GENERIC_GPIO
  214. select HAVE_CLK
  215. select HAVE_CLK
  216. select ARCH_REQUIRE_GPIOLIB
  217. help
  218. This enables support for the Cirrus EP93xx series of CPUs.
  219. config ARCH_FOOTBRIDGE
  220. bool "FootBridge"
  221. select FOOTBRIDGE
  222. help
  223. Support for systems based on the DC21285 companion chip
  224. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  225. config ARCH_NETX
  226. bool "Hilscher NetX based"
  227. select ARM_VIC
  228. help
  229. This enables support for systems based on the Hilscher NetX Soc
  230. config ARCH_H720X
  231. bool "Hynix HMS720x-based"
  232. select ISA_DMA_API
  233. help
  234. This enables support for systems based on the Hynix HMS720x
  235. config ARCH_IMX
  236. bool "IMX"
  237. select GENERIC_GPIO
  238. select GENERIC_TIME
  239. select GENERIC_CLOCKEVENTS
  240. help
  241. Support for Motorola's i.MX family of processors (MX1, MXL).
  242. config ARCH_IOP13XX
  243. bool "IOP13xx-based"
  244. depends on MMU
  245. select PLAT_IOP
  246. select PCI
  247. select ARCH_SUPPORTS_MSI
  248. help
  249. Support for Intel's IOP13XX (XScale) family of processors.
  250. config ARCH_IOP32X
  251. bool "IOP32x-based"
  252. depends on MMU
  253. select PLAT_IOP
  254. select PCI
  255. select GENERIC_GPIO
  256. select ARCH_REQUIRE_GPIOLIB
  257. help
  258. Support for Intel's 80219 and IOP32X (XScale) family of
  259. processors.
  260. config ARCH_IOP33X
  261. bool "IOP33x-based"
  262. depends on MMU
  263. select PLAT_IOP
  264. select PCI
  265. select GENERIC_GPIO
  266. select ARCH_REQUIRE_GPIOLIB
  267. help
  268. Support for Intel's IOP33X (XScale) family of processors.
  269. config ARCH_IXP23XX
  270. bool "IXP23XX-based"
  271. depends on MMU
  272. select PCI
  273. help
  274. Support for Intel's IXP23xx (XScale) family of processors.
  275. config ARCH_IXP2000
  276. bool "IXP2400/2800-based"
  277. depends on MMU
  278. select PCI
  279. help
  280. Support for Intel's IXP2400/2800 (XScale) family of processors.
  281. config ARCH_IXP4XX
  282. bool "IXP4xx-based"
  283. depends on MMU
  284. select GENERIC_GPIO
  285. select GENERIC_TIME
  286. select GENERIC_CLOCKEVENTS
  287. help
  288. Support for Intel's IXP4XX (XScale) family of processors.
  289. config ARCH_L7200
  290. bool "LinkUp-L7200"
  291. select FIQ
  292. help
  293. Say Y here if you intend to run this kernel on a LinkUp Systems
  294. L7200 Software Development Board which uses an ARM720T processor.
  295. Information on this board can be obtained at:
  296. <http://www.linkupsys.com/>
  297. If you have any questions or comments about the Linux kernel port
  298. to this board, send e-mail to <sjhill@cotw.com>.
  299. config ARCH_KIRKWOOD
  300. bool "Marvell Kirkwood"
  301. select PCI
  302. select GENERIC_TIME
  303. select GENERIC_CLOCKEVENTS
  304. select PLAT_ORION
  305. help
  306. Support for the following Marvell Kirkwood series SoCs:
  307. 88F6180, 88F6192 and 88F6281.
  308. config ARCH_KS8695
  309. bool "Micrel/Kendin KS8695"
  310. select GENERIC_GPIO
  311. help
  312. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  313. System-on-Chip devices.
  314. config ARCH_NS9XXX
  315. bool "NetSilicon NS9xxx"
  316. select GENERIC_GPIO
  317. select GENERIC_TIME
  318. select GENERIC_CLOCKEVENTS
  319. select HAVE_CLK
  320. help
  321. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  322. System.
  323. <http://www.digi.com/products/microprocessors/index.jsp>
  324. config ARCH_LOKI
  325. bool "Marvell Loki (88RC8480)"
  326. select GENERIC_TIME
  327. select GENERIC_CLOCKEVENTS
  328. select PLAT_ORION
  329. help
  330. Support for the Marvell Loki (88RC8480) SoC.
  331. config ARCH_MV78XX0
  332. bool "Marvell MV78xx0"
  333. select PCI
  334. select GENERIC_TIME
  335. select GENERIC_CLOCKEVENTS
  336. select PLAT_ORION
  337. help
  338. Support for the following Marvell MV78xx0 series SoCs:
  339. MV781x0, MV782x0.
  340. config ARCH_MXC
  341. bool "Freescale MXC/iMX-based"
  342. select GENERIC_TIME
  343. select GENERIC_CLOCKEVENTS
  344. select ARCH_MTD_XIP
  345. select GENERIC_GPIO
  346. select ARCH_REQUIRE_GPIOLIB
  347. help
  348. Support for Freescale MXC/iMX-based family of processors
  349. config ARCH_ORION5X
  350. bool "Marvell Orion"
  351. depends on MMU
  352. select PCI
  353. select GENERIC_GPIO
  354. select GENERIC_TIME
  355. select GENERIC_CLOCKEVENTS
  356. select PLAT_ORION
  357. help
  358. Support for the following Marvell Orion 5x series SoCs:
  359. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  360. Orion-2 (5281).
  361. config ARCH_PNX4008
  362. bool "Philips Nexperia PNX4008 Mobile"
  363. select HAVE_CLK
  364. help
  365. This enables support for Philips PNX4008 mobile platform.
  366. config ARCH_PXA
  367. bool "PXA2xx/PXA3xx-based"
  368. depends on MMU
  369. select ARCH_MTD_XIP
  370. select GENERIC_GPIO
  371. select HAVE_CLK
  372. select ARCH_REQUIRE_GPIOLIB
  373. select GENERIC_TIME
  374. select GENERIC_CLOCKEVENTS
  375. select TICK_ONESHOT
  376. help
  377. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  378. config ARCH_RPC
  379. bool "RiscPC"
  380. select ARCH_ACORN
  381. select FIQ
  382. select TIMER_ACORN
  383. select ARCH_MAY_HAVE_PC_FDC
  384. select HAVE_PATA_PLATFORM
  385. select ISA_DMA_API
  386. select NO_IOPORT
  387. help
  388. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  389. CD-ROM interface, serial and parallel port, and the floppy drive.
  390. config ARCH_SA1100
  391. bool "SA1100-based"
  392. select ISA
  393. select ARCH_DISCONTIGMEM_ENABLE
  394. select ARCH_SPARSEMEM_ENABLE
  395. select ARCH_SELECT_MEMORY_MODEL
  396. select ARCH_MTD_XIP
  397. select GENERIC_GPIO
  398. select GENERIC_TIME
  399. select GENERIC_CLOCKEVENTS
  400. select HAVE_CLK
  401. select TICK_ONESHOT
  402. select ARCH_REQUIRE_GPIOLIB
  403. help
  404. Support for StrongARM 11x0 based boards.
  405. config ARCH_S3C2410
  406. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  407. select GENERIC_GPIO
  408. select HAVE_CLK
  409. help
  410. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  411. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  412. the Samsung SMDK2410 development board (and derivatives).
  413. config ARCH_SHARK
  414. bool "Shark"
  415. select ISA
  416. select ISA_DMA
  417. select PCI
  418. help
  419. Support for the StrongARM based Digital DNARD machine, also known
  420. as "Shark" (<http://www.shark-linux.de/shark.html>).
  421. config ARCH_LH7A40X
  422. bool "Sharp LH7A40X"
  423. help
  424. Say Y here for systems based on one of the Sharp LH7A40X
  425. System on a Chip processors. These CPUs include an ARM922T
  426. core with a wide array of integrated devices for
  427. hand-held and low-power applications.
  428. config ARCH_DAVINCI
  429. bool "TI DaVinci"
  430. select GENERIC_TIME
  431. select GENERIC_CLOCKEVENTS
  432. select GENERIC_GPIO
  433. select HAVE_CLK
  434. help
  435. Support for TI's DaVinci platform.
  436. config ARCH_OMAP
  437. bool "TI OMAP"
  438. select GENERIC_GPIO
  439. select HAVE_CLK
  440. select ARCH_REQUIRE_GPIOLIB
  441. select GENERIC_TIME
  442. select GENERIC_CLOCKEVENTS
  443. help
  444. Support for TI's OMAP platform (OMAP1 and OMAP2).
  445. config ARCH_MSM7X00A
  446. bool "Qualcomm MSM7X00A"
  447. select GENERIC_TIME
  448. select GENERIC_CLOCKEVENTS
  449. help
  450. Support for Qualcomm MSM7X00A based systems. This runs on the ARM11
  451. apps processor of the MSM7X00A and depends on a shared memory
  452. interface to the ARM9 modem processor which runs the baseband stack
  453. and controls some vital subsystems (clock and power control, etc).
  454. <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp>
  455. endchoice
  456. source "arch/arm/mach-clps711x/Kconfig"
  457. source "arch/arm/mach-ep93xx/Kconfig"
  458. source "arch/arm/mach-footbridge/Kconfig"
  459. source "arch/arm/mach-integrator/Kconfig"
  460. source "arch/arm/mach-iop32x/Kconfig"
  461. source "arch/arm/mach-iop33x/Kconfig"
  462. source "arch/arm/mach-iop13xx/Kconfig"
  463. source "arch/arm/mach-ixp4xx/Kconfig"
  464. source "arch/arm/mach-ixp2000/Kconfig"
  465. source "arch/arm/mach-ixp23xx/Kconfig"
  466. source "arch/arm/mach-loki/Kconfig"
  467. source "arch/arm/mach-mv78xx0/Kconfig"
  468. source "arch/arm/mach-pxa/Kconfig"
  469. source "arch/arm/mach-sa1100/Kconfig"
  470. source "arch/arm/plat-omap/Kconfig"
  471. source "arch/arm/mach-omap1/Kconfig"
  472. source "arch/arm/mach-omap2/Kconfig"
  473. source "arch/arm/mach-orion5x/Kconfig"
  474. source "arch/arm/mach-kirkwood/Kconfig"
  475. source "arch/arm/plat-s3c24xx/Kconfig"
  476. source "arch/arm/plat-s3c/Kconfig"
  477. if ARCH_S3C2410
  478. source "arch/arm/mach-s3c2400/Kconfig"
  479. source "arch/arm/mach-s3c2410/Kconfig"
  480. source "arch/arm/mach-s3c2412/Kconfig"
  481. source "arch/arm/mach-s3c2440/Kconfig"
  482. source "arch/arm/mach-s3c2442/Kconfig"
  483. source "arch/arm/mach-s3c2443/Kconfig"
  484. endif
  485. source "arch/arm/mach-lh7a40x/Kconfig"
  486. source "arch/arm/mach-imx/Kconfig"
  487. source "arch/arm/mach-h720x/Kconfig"
  488. source "arch/arm/mach-versatile/Kconfig"
  489. source "arch/arm/mach-aaec2000/Kconfig"
  490. source "arch/arm/mach-realview/Kconfig"
  491. source "arch/arm/mach-at91/Kconfig"
  492. source "arch/arm/plat-mxc/Kconfig"
  493. source "arch/arm/mach-netx/Kconfig"
  494. source "arch/arm/mach-ns9xxx/Kconfig"
  495. source "arch/arm/mach-davinci/Kconfig"
  496. source "arch/arm/mach-ks8695/Kconfig"
  497. source "arch/arm/mach-msm/Kconfig"
  498. # Definitions to make life easier
  499. config ARCH_ACORN
  500. bool
  501. config PLAT_IOP
  502. bool
  503. config PLAT_ORION
  504. bool
  505. source arch/arm/mm/Kconfig
  506. config IWMMXT
  507. bool "Enable iWMMXt support"
  508. depends on CPU_XSCALE || CPU_XSC3
  509. default y if PXA27x || PXA3xx
  510. help
  511. Enable support for iWMMXt context switching at run time if
  512. running on a CPU that supports it.
  513. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  514. config XSCALE_PMU
  515. bool
  516. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  517. default y
  518. if !MMU
  519. source "arch/arm/Kconfig-nommu"
  520. endif
  521. endmenu
  522. source "arch/arm/common/Kconfig"
  523. config FORCE_MAX_ZONEORDER
  524. int
  525. depends on SA1111
  526. default "9"
  527. menu "Bus support"
  528. config ARM_AMBA
  529. bool
  530. config ISA
  531. bool
  532. help
  533. Find out whether you have ISA slots on your motherboard. ISA is the
  534. name of a bus system, i.e. the way the CPU talks to the other stuff
  535. inside your box. Other bus systems are PCI, EISA, MicroChannel
  536. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  537. newer boards don't support it. If you have ISA, say Y, otherwise N.
  538. # Select ISA DMA controller support
  539. config ISA_DMA
  540. bool
  541. select ISA_DMA_API
  542. # Select ISA DMA interface
  543. config ISA_DMA_API
  544. bool
  545. config PCI
  546. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  547. help
  548. Find out whether you have a PCI motherboard. PCI is the name of a
  549. bus system, i.e. the way the CPU talks to the other stuff inside
  550. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  551. VESA. If you have PCI, say Y, otherwise N.
  552. config PCI_SYSCALL
  553. def_bool PCI
  554. # Select the host bridge type
  555. config PCI_HOST_VIA82C505
  556. bool
  557. depends on PCI && ARCH_SHARK
  558. default y
  559. config PCI_HOST_ITE8152
  560. bool
  561. depends on PCI && MACH_ARMCORE
  562. default y
  563. select DMABOUNCE
  564. source "drivers/pci/Kconfig"
  565. source "drivers/pcmcia/Kconfig"
  566. endmenu
  567. menu "Kernel Features"
  568. source "kernel/time/Kconfig"
  569. config SMP
  570. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  571. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
  572. select USE_GENERIC_SMP_HELPERS
  573. help
  574. This enables support for systems with more than one CPU. If you have
  575. a system with only one CPU, like most personal computers, say N. If
  576. you have a system with more than one CPU, say Y.
  577. If you say N here, the kernel will run on single and multiprocessor
  578. machines, but will use only one CPU of a multiprocessor machine. If
  579. you say Y here, the kernel will run on many, but not all, single
  580. processor machines. On a single processor machine, the kernel will
  581. run faster if you say N here.
  582. See also <file:Documentation/i386/IO-APIC.txt>,
  583. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  584. <http://www.linuxdoc.org/docs.html#howto>.
  585. If you don't know what to do here, say N.
  586. config NR_CPUS
  587. int "Maximum number of CPUs (2-32)"
  588. range 2 32
  589. depends on SMP
  590. default "4"
  591. config HOTPLUG_CPU
  592. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  593. depends on SMP && HOTPLUG && EXPERIMENTAL
  594. help
  595. Say Y here to experiment with turning CPUs off and on. CPUs
  596. can be controlled through /sys/devices/system/cpu.
  597. config LOCAL_TIMERS
  598. bool "Use local timer interrupts"
  599. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
  600. default y
  601. help
  602. Enable support for local timers on SMP platforms, rather then the
  603. legacy IPI broadcast method. Local timers allows the system
  604. accounting to be spread across the timer interval, preventing a
  605. "thundering herd" at every timer tick.
  606. config PREEMPT
  607. bool "Preemptible Kernel (EXPERIMENTAL)"
  608. depends on EXPERIMENTAL
  609. help
  610. This option reduces the latency of the kernel when reacting to
  611. real-time or interactive events by allowing a low priority process to
  612. be preempted even if it is in kernel mode executing a system call.
  613. This allows applications to run more reliably even when the system is
  614. under load.
  615. Say Y here if you are building a kernel for a desktop, embedded
  616. or real-time system. Say N if you are unsure.
  617. config HZ
  618. int
  619. default 128 if ARCH_L7200
  620. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  621. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  622. default AT91_TIMER_HZ if ARCH_AT91
  623. default 100
  624. config AEABI
  625. bool "Use the ARM EABI to compile the kernel"
  626. help
  627. This option allows for the kernel to be compiled using the latest
  628. ARM ABI (aka EABI). This is only useful if you are using a user
  629. space environment that is also compiled with EABI.
  630. Since there are major incompatibilities between the legacy ABI and
  631. EABI, especially with regard to structure member alignment, this
  632. option also changes the kernel syscall calling convention to
  633. disambiguate both ABIs and allow for backward compatibility support
  634. (selected with CONFIG_OABI_COMPAT).
  635. To use this you need GCC version 4.0.0 or later.
  636. config OABI_COMPAT
  637. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  638. depends on AEABI && EXPERIMENTAL
  639. default y
  640. help
  641. This option preserves the old syscall interface along with the
  642. new (ARM EABI) one. It also provides a compatibility layer to
  643. intercept syscalls that have structure arguments which layout
  644. in memory differs between the legacy ABI and the new ARM EABI
  645. (only for non "thumb" binaries). This option adds a tiny
  646. overhead to all syscalls and produces a slightly larger kernel.
  647. If you know you'll be using only pure EABI user space then you
  648. can say N here. If this option is not selected and you attempt
  649. to execute a legacy ABI binary then the result will be
  650. UNPREDICTABLE (in fact it can be predicted that it won't work
  651. at all). If in doubt say Y.
  652. config ARCH_DISCONTIGMEM_ENABLE
  653. bool
  654. default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
  655. help
  656. Say Y to support efficient handling of discontiguous physical memory,
  657. for architectures which are either NUMA (Non-Uniform Memory Access)
  658. or have huge holes in the physical address space for other reasons.
  659. See <file:Documentation/vm/numa> for more.
  660. config ARCH_SPARSEMEM_ENABLE
  661. bool
  662. config ARCH_SELECT_MEMORY_MODEL
  663. bool
  664. config NODES_SHIFT
  665. int
  666. default "4" if ARCH_LH7A40X
  667. default "2"
  668. depends on NEED_MULTIPLE_NODES
  669. source "mm/Kconfig"
  670. config LEDS
  671. bool "Timer and CPU usage LEDs"
  672. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  673. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  674. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  675. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  676. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  677. ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
  678. ARCH_KS8695 || MACH_RD88F5182
  679. help
  680. If you say Y here, the LEDs on your machine will be used
  681. to provide useful information about your current system status.
  682. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  683. be able to select which LEDs are active using the options below. If
  684. you are compiling a kernel for the EBSA-110 or the LART however, the
  685. red LED will simply flash regularly to indicate that the system is
  686. still functional. It is safe to say Y here if you have a CATS
  687. system, but the driver will do nothing.
  688. config LEDS_TIMER
  689. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  690. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  691. || MACH_OMAP_PERSEUS2
  692. depends on LEDS
  693. depends on !GENERIC_CLOCKEVENTS
  694. default y if ARCH_EBSA110
  695. help
  696. If you say Y here, one of the system LEDs (the green one on the
  697. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  698. will flash regularly to indicate that the system is still
  699. operational. This is mainly useful to kernel hackers who are
  700. debugging unstable kernels.
  701. The LART uses the same LED for both Timer LED and CPU usage LED
  702. functions. You may choose to use both, but the Timer LED function
  703. will overrule the CPU usage LED.
  704. config LEDS_CPU
  705. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  706. !ARCH_OMAP) \
  707. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  708. || MACH_OMAP_PERSEUS2
  709. depends on LEDS
  710. help
  711. If you say Y here, the red LED will be used to give a good real
  712. time indication of CPU usage, by lighting whenever the idle task
  713. is not currently executing.
  714. The LART uses the same LED for both Timer LED and CPU usage LED
  715. functions. You may choose to use both, but the Timer LED function
  716. will overrule the CPU usage LED.
  717. config ALIGNMENT_TRAP
  718. bool
  719. depends on CPU_CP15_MMU
  720. default y if !ARCH_EBSA110
  721. help
  722. ARM processors cannot fetch/store information which is not
  723. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  724. address divisible by 4. On 32-bit ARM processors, these non-aligned
  725. fetch/store instructions will be emulated in software if you say
  726. here, which has a severe performance impact. This is necessary for
  727. correct operation of some network protocols. With an IP-only
  728. configuration it is safe to say N, otherwise say Y.
  729. endmenu
  730. menu "Boot options"
  731. # Compressed boot loader in ROM. Yes, we really want to ask about
  732. # TEXT and BSS so we preserve their values in the config files.
  733. config ZBOOT_ROM_TEXT
  734. hex "Compressed ROM boot loader base address"
  735. default "0"
  736. help
  737. The physical address at which the ROM-able zImage is to be
  738. placed in the target. Platforms which normally make use of
  739. ROM-able zImage formats normally set this to a suitable
  740. value in their defconfig file.
  741. If ZBOOT_ROM is not enabled, this has no effect.
  742. config ZBOOT_ROM_BSS
  743. hex "Compressed ROM boot loader BSS address"
  744. default "0"
  745. help
  746. The base address of an area of read/write memory in the target
  747. for the ROM-able zImage which must be available while the
  748. decompressor is running. It must be large enough to hold the
  749. entire decompressed kernel plus an additional 128 KiB.
  750. Platforms which normally make use of ROM-able zImage formats
  751. normally set this to a suitable value in their defconfig file.
  752. If ZBOOT_ROM is not enabled, this has no effect.
  753. config ZBOOT_ROM
  754. bool "Compressed boot loader in ROM/flash"
  755. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  756. help
  757. Say Y here if you intend to execute your compressed kernel image
  758. (zImage) directly from ROM or flash. If unsure, say N.
  759. config CMDLINE
  760. string "Default kernel command string"
  761. default ""
  762. help
  763. On some architectures (EBSA110 and CATS), there is currently no way
  764. for the boot loader to pass arguments to the kernel. For these
  765. architectures, you should supply some command-line options at build
  766. time by entering them here. As a minimum, you should specify the
  767. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  768. config XIP_KERNEL
  769. bool "Kernel Execute-In-Place from ROM"
  770. depends on !ZBOOT_ROM
  771. help
  772. Execute-In-Place allows the kernel to run from non-volatile storage
  773. directly addressable by the CPU, such as NOR flash. This saves RAM
  774. space since the text section of the kernel is not loaded from flash
  775. to RAM. Read-write sections, such as the data section and stack,
  776. are still copied to RAM. The XIP kernel is not compressed since
  777. it has to run directly from flash, so it will take more space to
  778. store it. The flash address used to link the kernel object files,
  779. and for storing it, is configuration dependent. Therefore, if you
  780. say Y here, you must know the proper physical address where to
  781. store the kernel image depending on your own flash memory usage.
  782. Also note that the make target becomes "make xipImage" rather than
  783. "make zImage" or "make Image". The final kernel binary to put in
  784. ROM memory will be arch/arm/boot/xipImage.
  785. If unsure, say N.
  786. config XIP_PHYS_ADDR
  787. hex "XIP Kernel Physical Location"
  788. depends on XIP_KERNEL
  789. default "0x00080000"
  790. help
  791. This is the physical address in your flash memory the kernel will
  792. be linked for and stored to. This address is dependent on your
  793. own flash usage.
  794. config KEXEC
  795. bool "Kexec system call (EXPERIMENTAL)"
  796. depends on EXPERIMENTAL
  797. help
  798. kexec is a system call that implements the ability to shutdown your
  799. current kernel, and to start another kernel. It is like a reboot
  800. but it is independent of the system firmware. And like a reboot
  801. you can start any kernel with it, not just Linux.
  802. It is an ongoing process to be certain the hardware in a machine
  803. is properly shutdown, so do not be surprised if this code does not
  804. initially work for you. It may help to enable device hotplugging
  805. support.
  806. config ATAGS_PROC
  807. bool "Export atags in procfs"
  808. depends on KEXEC
  809. default y
  810. help
  811. Should the atags used to boot the kernel be exported in an "atags"
  812. file in procfs. Useful with kexec.
  813. endmenu
  814. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
  815. menu "CPU Frequency scaling"
  816. source "drivers/cpufreq/Kconfig"
  817. config CPU_FREQ_SA1100
  818. bool
  819. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  820. default y
  821. config CPU_FREQ_SA1110
  822. bool
  823. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  824. default y
  825. config CPU_FREQ_INTEGRATOR
  826. tristate "CPUfreq driver for ARM Integrator CPUs"
  827. depends on ARCH_INTEGRATOR && CPU_FREQ
  828. default y
  829. help
  830. This enables the CPUfreq driver for ARM Integrator CPUs.
  831. For details, take a look at <file:Documentation/cpu-freq>.
  832. If in doubt, say Y.
  833. config CPU_FREQ_IMX
  834. tristate "CPUfreq driver for i.MX CPUs"
  835. depends on ARCH_IMX && CPU_FREQ
  836. default n
  837. help
  838. This enables the CPUfreq driver for i.MX CPUs.
  839. If in doubt, say N.
  840. config CPU_FREQ_PXA
  841. bool
  842. depends on CPU_FREQ && ARCH_PXA && PXA25x
  843. default y
  844. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  845. endmenu
  846. endif
  847. menu "Floating point emulation"
  848. comment "At least one emulation must be selected"
  849. config FPE_NWFPE
  850. bool "NWFPE math emulation"
  851. depends on !AEABI || OABI_COMPAT
  852. ---help---
  853. Say Y to include the NWFPE floating point emulator in the kernel.
  854. This is necessary to run most binaries. Linux does not currently
  855. support floating point hardware so you need to say Y here even if
  856. your machine has an FPA or floating point co-processor podule.
  857. You may say N here if you are going to load the Acorn FPEmulator
  858. early in the bootup.
  859. config FPE_NWFPE_XP
  860. bool "Support extended precision"
  861. depends on FPE_NWFPE
  862. help
  863. Say Y to include 80-bit support in the kernel floating-point
  864. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  865. Note that gcc does not generate 80-bit operations by default,
  866. so in most cases this option only enlarges the size of the
  867. floating point emulator without any good reason.
  868. You almost surely want to say N here.
  869. config FPE_FASTFPE
  870. bool "FastFPE math emulation (EXPERIMENTAL)"
  871. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  872. ---help---
  873. Say Y here to include the FAST floating point emulator in the kernel.
  874. This is an experimental much faster emulator which now also has full
  875. precision for the mantissa. It does not support any exceptions.
  876. It is very simple, and approximately 3-6 times faster than NWFPE.
  877. It should be sufficient for most programs. It may be not suitable
  878. for scientific calculations, but you have to check this for yourself.
  879. If you do not feel you need a faster FP emulation you should better
  880. choose NWFPE.
  881. config VFP
  882. bool "VFP-format floating point maths"
  883. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  884. help
  885. Say Y to include VFP support code in the kernel. This is needed
  886. if your hardware includes a VFP unit.
  887. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  888. release notes and additional status information.
  889. Say N if your target does not have VFP hardware.
  890. config VFPv3
  891. bool
  892. depends on VFP
  893. default y if CPU_V7
  894. config NEON
  895. bool "Advanced SIMD (NEON) Extension support"
  896. depends on VFPv3 && CPU_V7
  897. help
  898. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  899. Extension.
  900. endmenu
  901. menu "Userspace binary formats"
  902. source "fs/Kconfig.binfmt"
  903. config ARTHUR
  904. tristate "RISC OS personality"
  905. depends on !AEABI
  906. help
  907. Say Y here to include the kernel code necessary if you want to run
  908. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  909. experimental; if this sounds frightening, say N and sleep in peace.
  910. You can also say M here to compile this support as a module (which
  911. will be called arthur).
  912. endmenu
  913. menu "Power management options"
  914. source "kernel/power/Kconfig"
  915. config ARCH_SUSPEND_POSSIBLE
  916. def_bool y
  917. endmenu
  918. source "net/Kconfig"
  919. menu "Device Drivers"
  920. source "drivers/base/Kconfig"
  921. source "drivers/connector/Kconfig"
  922. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  923. source "drivers/mtd/Kconfig"
  924. endif
  925. source "drivers/parport/Kconfig"
  926. source "drivers/pnp/Kconfig"
  927. source "drivers/block/Kconfig"
  928. # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
  929. source "drivers/misc/Kconfig"
  930. source "drivers/ide/Kconfig"
  931. source "drivers/scsi/Kconfig"
  932. source "drivers/ata/Kconfig"
  933. source "drivers/md/Kconfig"
  934. source "drivers/message/fusion/Kconfig"
  935. source "drivers/ieee1394/Kconfig"
  936. source "drivers/message/i2o/Kconfig"
  937. source "drivers/net/Kconfig"
  938. source "drivers/isdn/Kconfig"
  939. # input before char - char/joystick depends on it. As does USB.
  940. source "drivers/input/Kconfig"
  941. source "drivers/char/Kconfig"
  942. source "drivers/i2c/Kconfig"
  943. source "drivers/spi/Kconfig"
  944. source "drivers/gpio/Kconfig"
  945. source "drivers/w1/Kconfig"
  946. source "drivers/power/Kconfig"
  947. source "drivers/hwmon/Kconfig"
  948. source "drivers/watchdog/Kconfig"
  949. source "drivers/ssb/Kconfig"
  950. #source "drivers/l3/Kconfig"
  951. source "drivers/mfd/Kconfig"
  952. source "drivers/media/Kconfig"
  953. source "drivers/video/Kconfig"
  954. source "sound/Kconfig"
  955. source "drivers/hid/Kconfig"
  956. source "drivers/usb/Kconfig"
  957. source "drivers/mmc/Kconfig"
  958. source "drivers/leds/Kconfig"
  959. source "drivers/rtc/Kconfig"
  960. source "drivers/dma/Kconfig"
  961. source "drivers/dca/Kconfig"
  962. source "drivers/uio/Kconfig"
  963. endmenu
  964. source "fs/Kconfig"
  965. source "arch/arm/Kconfig.debug"
  966. source "security/Kconfig"
  967. source "crypto/Kconfig"
  968. source "lib/Kconfig"