Kconfig 30 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 RTC_LIB
  10. select SYS_SUPPORTS_APM_EMULATION
  11. select HAVE_OPROFILE
  12. select HAVE_KPROBES if (!XIP_KERNEL)
  13. help
  14. The ARM series is a line of low-power-consumption RISC chip designs
  15. licensed by ARM Ltd and targeted at embedded applications and
  16. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  17. manufactured, but legacy ARM-based PC hardware remains popular in
  18. Europe. There is an ARM Linux project with a web page at
  19. <http://www.arm.linux.org.uk/>.
  20. config SYS_SUPPORTS_APM_EMULATION
  21. bool
  22. config GENERIC_GPIO
  23. bool
  24. default n
  25. config GENERIC_TIME
  26. bool
  27. default n
  28. config GENERIC_CLOCKEVENTS
  29. bool
  30. default n
  31. config GENERIC_CLOCKEVENTS_BROADCAST
  32. bool
  33. depends on GENERIC_CLOCKEVENTS
  34. default y if SMP && !LOCAL_TIMERS
  35. config MMU
  36. bool
  37. default y
  38. config NO_IOPORT
  39. bool
  40. default n
  41. config EISA
  42. bool
  43. ---help---
  44. The Extended Industry Standard Architecture (EISA) bus was
  45. developed as an open alternative to the IBM MicroChannel bus.
  46. The EISA bus provided some of the features of the IBM MicroChannel
  47. bus while maintaining backward compatibility with cards made for
  48. the older ISA bus. The EISA bus saw limited use between 1988 and
  49. 1995 when it was made obsolete by the PCI bus.
  50. Say Y here if you are building a kernel for an EISA-based machine.
  51. Otherwise, say N.
  52. config SBUS
  53. bool
  54. config MCA
  55. bool
  56. help
  57. MicroChannel Architecture is found in some IBM PS/2 machines and
  58. laptops. It is a bus system similar to PCI or ISA. See
  59. <file:Documentation/mca.txt> (and especially the web page given
  60. there) before attempting to build an MCA bus kernel.
  61. config GENERIC_HARDIRQS
  62. bool
  63. default y
  64. config STACKTRACE_SUPPORT
  65. bool
  66. default y
  67. config LOCKDEP_SUPPORT
  68. bool
  69. default y
  70. config TRACE_IRQFLAGS_SUPPORT
  71. bool
  72. default y
  73. config HARDIRQS_SW_RESEND
  74. bool
  75. default y
  76. config GENERIC_IRQ_PROBE
  77. bool
  78. default y
  79. config GENERIC_LOCKBREAK
  80. bool
  81. default y
  82. depends on SMP && PREEMPT
  83. config RWSEM_GENERIC_SPINLOCK
  84. bool
  85. default y
  86. config RWSEM_XCHGADD_ALGORITHM
  87. bool
  88. config ARCH_HAS_ILOG2_U32
  89. bool
  90. default n
  91. config ARCH_HAS_ILOG2_U64
  92. bool
  93. default n
  94. config GENERIC_HWEIGHT
  95. bool
  96. default y
  97. config GENERIC_CALIBRATE_DELAY
  98. bool
  99. default y
  100. config ARCH_SUPPORTS_AOUT
  101. def_bool y
  102. config ARCH_MAY_HAVE_PC_FDC
  103. bool
  104. config ZONE_DMA
  105. bool
  106. default y
  107. config GENERIC_ISA_DMA
  108. bool
  109. config FIQ
  110. bool
  111. config ARCH_MTD_XIP
  112. bool
  113. if OPROFILE
  114. config OPROFILE_ARMV6
  115. def_bool y
  116. depends on CPU_V6 && !SMP
  117. select OPROFILE_ARM11_CORE
  118. config OPROFILE_MPCORE
  119. def_bool y
  120. depends on CPU_V6 && SMP
  121. select OPROFILE_ARM11_CORE
  122. config OPROFILE_ARM11_CORE
  123. bool
  124. endif
  125. config VECTORS_BASE
  126. hex
  127. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  128. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  129. default 0x00000000
  130. help
  131. The base address of exception vectors.
  132. source "init/Kconfig"
  133. menu "System Type"
  134. choice
  135. prompt "ARM system type"
  136. default ARCH_VERSATILE
  137. config ARCH_AAEC2000
  138. bool "Agilent AAEC-2000 based"
  139. select ARM_AMBA
  140. help
  141. This enables support for systems based on the Agilent AAEC-2000
  142. config ARCH_INTEGRATOR
  143. bool "ARM Ltd. Integrator family"
  144. select ARM_AMBA
  145. select ICST525
  146. help
  147. Support for ARM's Integrator platform.
  148. config ARCH_REALVIEW
  149. bool "ARM Ltd. RealView family"
  150. select ARM_AMBA
  151. select ICST307
  152. select GENERIC_TIME
  153. select GENERIC_CLOCKEVENTS
  154. help
  155. This enables support for ARM Ltd RealView boards.
  156. config ARCH_VERSATILE
  157. bool "ARM Ltd. Versatile family"
  158. select ARM_AMBA
  159. select ARM_VIC
  160. select ICST307
  161. select GENERIC_TIME
  162. select GENERIC_CLOCKEVENTS
  163. help
  164. This enables support for ARM Ltd Versatile board.
  165. config ARCH_AT91
  166. bool "Atmel AT91"
  167. select GENERIC_GPIO
  168. help
  169. This enables support for systems based on the Atmel AT91RM9200,
  170. AT91SAM9 and AT91CAP9 processors.
  171. config ARCH_CLPS7500
  172. bool "Cirrus CL-PS7500FE"
  173. select TIMER_ACORN
  174. select ISA
  175. select NO_IOPORT
  176. select HAVE_IDE
  177. help
  178. Support for the Cirrus Logic PS7500FE system-on-a-chip.
  179. config ARCH_CLPS711X
  180. bool "Cirrus Logic CLPS711x/EP721x-based"
  181. help
  182. Support for Cirrus Logic 711x/721x based boards.
  183. config ARCH_CO285
  184. bool "Co-EBSA285"
  185. select FOOTBRIDGE
  186. select FOOTBRIDGE_ADDIN
  187. select HAVE_IDE
  188. help
  189. Support for Intel's EBSA285 companion chip.
  190. config ARCH_EBSA110
  191. bool "EBSA-110"
  192. select ISA
  193. select NO_IOPORT
  194. help
  195. This is an evaluation board for the StrongARM processor available
  196. from Digital. It has limited hardware on-board, including an
  197. Ethernet interface, two PCMCIA sockets, two serial ports and a
  198. parallel port.
  199. config ARCH_EP93XX
  200. bool "EP93xx-based"
  201. select ARM_AMBA
  202. select ARM_VIC
  203. select GENERIC_GPIO
  204. help
  205. This enables support for the Cirrus EP93xx series of CPUs.
  206. config ARCH_FOOTBRIDGE
  207. bool "FootBridge"
  208. select FOOTBRIDGE
  209. select HAVE_IDE
  210. help
  211. Support for systems based on the DC21285 companion chip
  212. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  213. config ARCH_NETX
  214. bool "Hilscher NetX based"
  215. select ARM_VIC
  216. help
  217. This enables support for systems based on the Hilscher NetX Soc
  218. config ARCH_H720X
  219. bool "Hynix HMS720x-based"
  220. select ISA_DMA_API
  221. help
  222. This enables support for systems based on the Hynix HMS720x
  223. config ARCH_IMX
  224. bool "IMX"
  225. select GENERIC_GPIO
  226. select GENERIC_TIME
  227. select GENERIC_CLOCKEVENTS
  228. help
  229. Support for Motorola's i.MX family of processors (MX1, MXL).
  230. config ARCH_IOP13XX
  231. bool "IOP13xx-based"
  232. depends on MMU
  233. select PLAT_IOP
  234. select PCI
  235. select ARCH_SUPPORTS_MSI
  236. help
  237. Support for Intel's IOP13XX (XScale) family of processors.
  238. config ARCH_IOP32X
  239. bool "IOP32x-based"
  240. depends on MMU
  241. select PLAT_IOP
  242. select PCI
  243. select HAVE_IDE
  244. help
  245. Support for Intel's 80219 and IOP32X (XScale) family of
  246. processors.
  247. config ARCH_IOP33X
  248. bool "IOP33x-based"
  249. depends on MMU
  250. select PLAT_IOP
  251. select PCI
  252. select HAVE_IDE
  253. help
  254. Support for Intel's IOP33X (XScale) family of processors.
  255. config ARCH_IXP23XX
  256. bool "IXP23XX-based"
  257. depends on MMU
  258. select HAVE_IDE
  259. select PCI
  260. help
  261. Support for Intel's IXP23xx (XScale) family of processors.
  262. config ARCH_IXP2000
  263. bool "IXP2400/2800-based"
  264. depends on MMU
  265. select PCI
  266. help
  267. Support for Intel's IXP2400/2800 (XScale) family of processors.
  268. config ARCH_IXP4XX
  269. bool "IXP4xx-based"
  270. depends on MMU
  271. select GENERIC_GPIO
  272. select GENERIC_TIME
  273. select GENERIC_CLOCKEVENTS
  274. select HAVE_IDE
  275. help
  276. Support for Intel's IXP4XX (XScale) family of processors.
  277. config ARCH_L7200
  278. bool "LinkUp-L7200"
  279. select FIQ
  280. select HAVE_IDE
  281. help
  282. Say Y here if you intend to run this kernel on a LinkUp Systems
  283. L7200 Software Development Board which uses an ARM720T processor.
  284. Information on this board can be obtained at:
  285. <http://www.linkupsys.com/>
  286. If you have any questions or comments about the Linux kernel port
  287. to this board, send e-mail to <sjhill@cotw.com>.
  288. config ARCH_KS8695
  289. bool "Micrel/Kendin KS8695"
  290. select GENERIC_GPIO
  291. help
  292. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  293. System-on-Chip devices.
  294. config ARCH_NS9XXX
  295. bool "NetSilicon NS9xxx"
  296. select GENERIC_GPIO
  297. select GENERIC_TIME
  298. select GENERIC_CLOCKEVENTS
  299. help
  300. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  301. System.
  302. <http://www.digi.com/products/microprocessors/index.jsp>
  303. config ARCH_MXC
  304. bool "Freescale MXC/iMX-based"
  305. select ARCH_MTD_XIP
  306. help
  307. Support for Freescale MXC/iMX-based family of processors
  308. config ARCH_ORION
  309. bool "Marvell Orion"
  310. depends on MMU
  311. select PCI
  312. select GENERIC_GPIO
  313. select GENERIC_TIME
  314. select GENERIC_CLOCKEVENTS
  315. help
  316. Support for Marvell Orion System on Chip family.
  317. config ARCH_PNX4008
  318. bool "Philips Nexperia PNX4008 Mobile"
  319. help
  320. This enables support for Philips PNX4008 mobile platform.
  321. config ARCH_PXA
  322. bool "PXA2xx/PXA3xx-based"
  323. depends on MMU
  324. select ARCH_MTD_XIP
  325. select GENERIC_GPIO
  326. select HAVE_IDE
  327. select HAVE_GPIO_LIB
  328. select GENERIC_TIME
  329. select GENERIC_CLOCKEVENTS
  330. select TICK_ONESHOT
  331. help
  332. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  333. config ARCH_RPC
  334. bool "RiscPC"
  335. select ARCH_ACORN
  336. select FIQ
  337. select TIMER_ACORN
  338. select ARCH_MAY_HAVE_PC_FDC
  339. select ISA_DMA_API
  340. select NO_IOPORT
  341. select HAVE_IDE
  342. help
  343. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  344. CD-ROM interface, serial and parallel port, and the floppy drive.
  345. config ARCH_SA1100
  346. bool "SA1100-based"
  347. select ISA
  348. select ARCH_DISCONTIGMEM_ENABLE
  349. select ARCH_MTD_XIP
  350. select GENERIC_GPIO
  351. select GENERIC_TIME
  352. select HAVE_IDE
  353. help
  354. Support for StrongARM 11x0 based boards.
  355. config ARCH_S3C2410
  356. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  357. select GENERIC_GPIO
  358. select HAVE_IDE
  359. help
  360. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  361. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  362. the Samsung SMDK2410 development board (and derivatives).
  363. config ARCH_SHARK
  364. bool "Shark"
  365. select HAVE_IDE
  366. select ISA
  367. select ISA_DMA
  368. select PCI
  369. help
  370. Support for the StrongARM based Digital DNARD machine, also known
  371. as "Shark" (<http://www.shark-linux.de/shark.html>).
  372. config ARCH_LH7A40X
  373. bool "Sharp LH7A40X"
  374. select HAVE_IDE
  375. help
  376. Say Y here for systems based on one of the Sharp LH7A40X
  377. System on a Chip processors. These CPUs include an ARM922T
  378. core with a wide array of integrated devices for
  379. hand-held and low-power applications.
  380. config ARCH_DAVINCI
  381. bool "TI DaVinci"
  382. select GENERIC_TIME
  383. select GENERIC_CLOCKEVENTS
  384. select GENERIC_GPIO
  385. help
  386. Support for TI's DaVinci platform.
  387. config ARCH_OMAP
  388. bool "TI OMAP"
  389. select GENERIC_GPIO
  390. select GENERIC_TIME
  391. help
  392. Support for TI's OMAP platform (OMAP1 and OMAP2).
  393. config ARCH_MSM7X00A
  394. bool "Qualcomm MSM7X00A"
  395. select GENERIC_TIME
  396. select GENERIC_CLOCKEVENTS
  397. help
  398. Support for Qualcomm MSM7X00A based systems. This runs on the ARM11
  399. apps processor of the MSM7X00A and depends on a shared memory
  400. interface to the ARM9 modem processor which runs the baseband stack
  401. and controls some vital subsystems (clock and power control, etc).
  402. <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp>
  403. endchoice
  404. source "arch/arm/mach-clps711x/Kconfig"
  405. source "arch/arm/mach-ep93xx/Kconfig"
  406. source "arch/arm/mach-footbridge/Kconfig"
  407. source "arch/arm/mach-integrator/Kconfig"
  408. source "arch/arm/mach-iop32x/Kconfig"
  409. source "arch/arm/mach-iop33x/Kconfig"
  410. source "arch/arm/mach-iop13xx/Kconfig"
  411. source "arch/arm/mach-ixp4xx/Kconfig"
  412. source "arch/arm/mach-ixp2000/Kconfig"
  413. source "arch/arm/mach-ixp23xx/Kconfig"
  414. source "arch/arm/mach-pxa/Kconfig"
  415. source "arch/arm/mach-sa1100/Kconfig"
  416. source "arch/arm/plat-omap/Kconfig"
  417. source "arch/arm/mach-omap1/Kconfig"
  418. source "arch/arm/mach-omap2/Kconfig"
  419. source "arch/arm/mach-orion/Kconfig"
  420. source "arch/arm/plat-s3c24xx/Kconfig"
  421. source "arch/arm/plat-s3c/Kconfig"
  422. if ARCH_S3C2410
  423. source "arch/arm/mach-s3c2400/Kconfig"
  424. source "arch/arm/mach-s3c2410/Kconfig"
  425. source "arch/arm/mach-s3c2412/Kconfig"
  426. source "arch/arm/mach-s3c2440/Kconfig"
  427. source "arch/arm/mach-s3c2442/Kconfig"
  428. source "arch/arm/mach-s3c2443/Kconfig"
  429. endif
  430. source "arch/arm/mach-lh7a40x/Kconfig"
  431. source "arch/arm/mach-imx/Kconfig"
  432. source "arch/arm/mach-h720x/Kconfig"
  433. source "arch/arm/mach-versatile/Kconfig"
  434. source "arch/arm/mach-aaec2000/Kconfig"
  435. source "arch/arm/mach-realview/Kconfig"
  436. source "arch/arm/mach-at91/Kconfig"
  437. source "arch/arm/plat-mxc/Kconfig"
  438. source "arch/arm/mach-netx/Kconfig"
  439. source "arch/arm/mach-ns9xxx/Kconfig"
  440. source "arch/arm/mach-davinci/Kconfig"
  441. source "arch/arm/mach-ks8695/Kconfig"
  442. source "arch/arm/mach-msm/Kconfig"
  443. # Definitions to make life easier
  444. config ARCH_ACORN
  445. bool
  446. config PLAT_IOP
  447. bool
  448. source arch/arm/mm/Kconfig
  449. config IWMMXT
  450. bool "Enable iWMMXt support"
  451. depends on CPU_XSCALE || CPU_XSC3
  452. default y if PXA27x || PXA3xx
  453. help
  454. Enable support for iWMMXt context switching at run time if
  455. running on a CPU that supports it.
  456. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  457. config XSCALE_PMU
  458. bool
  459. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  460. default y
  461. if !MMU
  462. source "arch/arm/Kconfig-nommu"
  463. endif
  464. endmenu
  465. source "arch/arm/common/Kconfig"
  466. config FORCE_MAX_ZONEORDER
  467. int
  468. depends on SA1111
  469. default "9"
  470. menu "Bus support"
  471. config ARM_AMBA
  472. bool
  473. config ISA
  474. bool
  475. help
  476. Find out whether you have ISA slots on your motherboard. ISA is the
  477. name of a bus system, i.e. the way the CPU talks to the other stuff
  478. inside your box. Other bus systems are PCI, EISA, MicroChannel
  479. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  480. newer boards don't support it. If you have ISA, say Y, otherwise N.
  481. # Select ISA DMA controller support
  482. config ISA_DMA
  483. bool
  484. select ISA_DMA_API
  485. # Select ISA DMA interface
  486. config ISA_DMA_API
  487. bool
  488. config PCI
  489. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  490. help
  491. Find out whether you have a PCI motherboard. PCI is the name of a
  492. bus system, i.e. the way the CPU talks to the other stuff inside
  493. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  494. VESA. If you have PCI, say Y, otherwise N.
  495. config PCI_SYSCALL
  496. def_bool PCI
  497. # Select the host bridge type
  498. config PCI_HOST_VIA82C505
  499. bool
  500. depends on PCI && ARCH_SHARK
  501. default y
  502. config PCI_HOST_ITE8152
  503. bool
  504. depends on PCI && MACH_ARMCORE
  505. default y
  506. select DMABOUNCE
  507. source "drivers/pci/Kconfig"
  508. source "drivers/pcmcia/Kconfig"
  509. endmenu
  510. menu "Kernel Features"
  511. source "kernel/time/Kconfig"
  512. config SMP
  513. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  514. depends on EXPERIMENTAL && REALVIEW_EB_ARM11MP
  515. help
  516. This enables support for systems with more than one CPU. If you have
  517. a system with only one CPU, like most personal computers, say N. If
  518. you have a system with more than one CPU, say Y.
  519. If you say N here, the kernel will run on single and multiprocessor
  520. machines, but will use only one CPU of a multiprocessor machine. If
  521. you say Y here, the kernel will run on many, but not all, single
  522. processor machines. On a single processor machine, the kernel will
  523. run faster if you say N here.
  524. See also <file:Documentation/i386/IO-APIC.txt>,
  525. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  526. <http://www.linuxdoc.org/docs.html#howto>.
  527. If you don't know what to do here, say N.
  528. config NR_CPUS
  529. int "Maximum number of CPUs (2-32)"
  530. range 2 32
  531. depends on SMP
  532. default "4"
  533. config HOTPLUG_CPU
  534. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  535. depends on SMP && HOTPLUG && EXPERIMENTAL
  536. help
  537. Say Y here to experiment with turning CPUs off and on. CPUs
  538. can be controlled through /sys/devices/system/cpu.
  539. config LOCAL_TIMERS
  540. bool "Use local timer interrupts"
  541. depends on SMP && REALVIEW_EB_ARM11MP
  542. default y
  543. help
  544. Enable support for local timers on SMP platforms, rather then the
  545. legacy IPI broadcast method. Local timers allows the system
  546. accounting to be spread across the timer interval, preventing a
  547. "thundering herd" at every timer tick.
  548. config PREEMPT
  549. bool "Preemptible Kernel (EXPERIMENTAL)"
  550. depends on EXPERIMENTAL
  551. help
  552. This option reduces the latency of the kernel when reacting to
  553. real-time or interactive events by allowing a low priority process to
  554. be preempted even if it is in kernel mode executing a system call.
  555. This allows applications to run more reliably even when the system is
  556. under load.
  557. Say Y here if you are building a kernel for a desktop, embedded
  558. or real-time system. Say N if you are unsure.
  559. config NO_IDLE_HZ
  560. bool "Dynamic tick timer"
  561. depends on !GENERIC_CLOCKEVENTS
  562. help
  563. Select this option if you want to disable continuous timer ticks
  564. and have them programmed to occur as required. This option saves
  565. power as the system can remain in idle state for longer.
  566. By default dynamic tick is disabled during the boot, and can be
  567. manually enabled with:
  568. echo 1 > /sys/devices/system/timer/timer0/dyn_tick
  569. Alternatively, if you want dynamic tick automatically enabled
  570. during boot, pass "dyntick=enable" via the kernel command string.
  571. Please note that dynamic tick may affect the accuracy of
  572. timekeeping on some platforms depending on the implementation.
  573. Currently at least OMAP, PXA2xx and SA11x0 platforms are known
  574. to have accurate timekeeping with dynamic tick.
  575. config HZ
  576. int
  577. default 128 if ARCH_L7200
  578. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  579. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  580. default AT91_TIMER_HZ if ARCH_AT91
  581. default 100
  582. config AEABI
  583. bool "Use the ARM EABI to compile the kernel"
  584. help
  585. This option allows for the kernel to be compiled using the latest
  586. ARM ABI (aka EABI). This is only useful if you are using a user
  587. space environment that is also compiled with EABI.
  588. Since there are major incompatibilities between the legacy ABI and
  589. EABI, especially with regard to structure member alignment, this
  590. option also changes the kernel syscall calling convention to
  591. disambiguate both ABIs and allow for backward compatibility support
  592. (selected with CONFIG_OABI_COMPAT).
  593. To use this you need GCC version 4.0.0 or later.
  594. config OABI_COMPAT
  595. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  596. depends on AEABI && EXPERIMENTAL
  597. default y
  598. help
  599. This option preserves the old syscall interface along with the
  600. new (ARM EABI) one. It also provides a compatibility layer to
  601. intercept syscalls that have structure arguments which layout
  602. in memory differs between the legacy ABI and the new ARM EABI
  603. (only for non "thumb" binaries). This option adds a tiny
  604. overhead to all syscalls and produces a slightly larger kernel.
  605. If you know you'll be using only pure EABI user space then you
  606. can say N here. If this option is not selected and you attempt
  607. to execute a legacy ABI binary then the result will be
  608. UNPREDICTABLE (in fact it can be predicted that it won't work
  609. at all). If in doubt say Y.
  610. config ARCH_DISCONTIGMEM_ENABLE
  611. bool
  612. default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
  613. help
  614. Say Y to support efficient handling of discontiguous physical memory,
  615. for architectures which are either NUMA (Non-Uniform Memory Access)
  616. or have huge holes in the physical address space for other reasons.
  617. See <file:Documentation/vm/numa> for more.
  618. config NODES_SHIFT
  619. int
  620. default "4" if ARCH_LH7A40X
  621. default "2"
  622. depends on NEED_MULTIPLE_NODES
  623. source "mm/Kconfig"
  624. config LEDS
  625. bool "Timer and CPU usage LEDs"
  626. depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
  627. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  628. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  629. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  630. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  631. ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
  632. ARCH_KS8695 || MACH_RD88F5182
  633. help
  634. If you say Y here, the LEDs on your machine will be used
  635. to provide useful information about your current system status.
  636. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  637. be able to select which LEDs are active using the options below. If
  638. you are compiling a kernel for the EBSA-110 or the LART however, the
  639. red LED will simply flash regularly to indicate that the system is
  640. still functional. It is safe to say Y here if you have a CATS
  641. system, but the driver will do nothing.
  642. config LEDS_TIMER
  643. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  644. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  645. || MACH_OMAP_PERSEUS2
  646. depends on LEDS
  647. depends on !GENERIC_CLOCKEVENTS
  648. default y if ARCH_EBSA110
  649. help
  650. If you say Y here, one of the system LEDs (the green one on the
  651. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  652. will flash regularly to indicate that the system is still
  653. operational. This is mainly useful to kernel hackers who are
  654. debugging unstable kernels.
  655. The LART uses the same LED for both Timer LED and CPU usage LED
  656. functions. You may choose to use both, but the Timer LED function
  657. will overrule the CPU usage LED.
  658. config LEDS_CPU
  659. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  660. !ARCH_OMAP) \
  661. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  662. || MACH_OMAP_PERSEUS2
  663. depends on LEDS
  664. help
  665. If you say Y here, the red LED will be used to give a good real
  666. time indication of CPU usage, by lighting whenever the idle task
  667. is not currently executing.
  668. The LART uses the same LED for both Timer LED and CPU usage LED
  669. functions. You may choose to use both, but the Timer LED function
  670. will overrule the CPU usage LED.
  671. config ALIGNMENT_TRAP
  672. bool
  673. depends on CPU_CP15_MMU
  674. default y if !ARCH_EBSA110
  675. help
  676. ARM processors cannot fetch/store information which is not
  677. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  678. address divisible by 4. On 32-bit ARM processors, these non-aligned
  679. fetch/store instructions will be emulated in software if you say
  680. here, which has a severe performance impact. This is necessary for
  681. correct operation of some network protocols. With an IP-only
  682. configuration it is safe to say N, otherwise say Y.
  683. endmenu
  684. menu "Boot options"
  685. # Compressed boot loader in ROM. Yes, we really want to ask about
  686. # TEXT and BSS so we preserve their values in the config files.
  687. config ZBOOT_ROM_TEXT
  688. hex "Compressed ROM boot loader base address"
  689. default "0"
  690. help
  691. The physical address at which the ROM-able zImage is to be
  692. placed in the target. Platforms which normally make use of
  693. ROM-able zImage formats normally set this to a suitable
  694. value in their defconfig file.
  695. If ZBOOT_ROM is not enabled, this has no effect.
  696. config ZBOOT_ROM_BSS
  697. hex "Compressed ROM boot loader BSS address"
  698. default "0"
  699. help
  700. The base address of an area of read/write memory in the target
  701. for the ROM-able zImage which must be available while the
  702. decompressor is running. It must be large enough to hold the
  703. entire decompressed kernel plus an additional 128 KiB.
  704. Platforms which normally make use of ROM-able zImage formats
  705. normally set this to a suitable value in their defconfig file.
  706. If ZBOOT_ROM is not enabled, this has no effect.
  707. config ZBOOT_ROM
  708. bool "Compressed boot loader in ROM/flash"
  709. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  710. help
  711. Say Y here if you intend to execute your compressed kernel image
  712. (zImage) directly from ROM or flash. If unsure, say N.
  713. config CMDLINE
  714. string "Default kernel command string"
  715. default ""
  716. help
  717. On some architectures (EBSA110 and CATS), there is currently no way
  718. for the boot loader to pass arguments to the kernel. For these
  719. architectures, you should supply some command-line options at build
  720. time by entering them here. As a minimum, you should specify the
  721. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  722. config XIP_KERNEL
  723. bool "Kernel Execute-In-Place from ROM"
  724. depends on !ZBOOT_ROM
  725. help
  726. Execute-In-Place allows the kernel to run from non-volatile storage
  727. directly addressable by the CPU, such as NOR flash. This saves RAM
  728. space since the text section of the kernel is not loaded from flash
  729. to RAM. Read-write sections, such as the data section and stack,
  730. are still copied to RAM. The XIP kernel is not compressed since
  731. it has to run directly from flash, so it will take more space to
  732. store it. The flash address used to link the kernel object files,
  733. and for storing it, is configuration dependent. Therefore, if you
  734. say Y here, you must know the proper physical address where to
  735. store the kernel image depending on your own flash memory usage.
  736. Also note that the make target becomes "make xipImage" rather than
  737. "make zImage" or "make Image". The final kernel binary to put in
  738. ROM memory will be arch/arm/boot/xipImage.
  739. If unsure, say N.
  740. config XIP_PHYS_ADDR
  741. hex "XIP Kernel Physical Location"
  742. depends on XIP_KERNEL
  743. default "0x00080000"
  744. help
  745. This is the physical address in your flash memory the kernel will
  746. be linked for and stored to. This address is dependent on your
  747. own flash usage.
  748. config KEXEC
  749. bool "Kexec system call (EXPERIMENTAL)"
  750. depends on EXPERIMENTAL
  751. help
  752. kexec is a system call that implements the ability to shutdown your
  753. current kernel, and to start another kernel. It is like a reboot
  754. but it is independent of the system firmware. And like a reboot
  755. you can start any kernel with it, not just Linux.
  756. It is an ongoing process to be certain the hardware in a machine
  757. is properly shutdown, so do not be surprised if this code does not
  758. initially work for you. It may help to enable device hotplugging
  759. support.
  760. config ATAGS_PROC
  761. bool "Export atags in procfs"
  762. default n
  763. help
  764. Should the atags used to boot the kernel be exported in an "atags"
  765. file in procfs. Useful with kexec.
  766. endmenu
  767. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
  768. menu "CPU Frequency scaling"
  769. source "drivers/cpufreq/Kconfig"
  770. config CPU_FREQ_SA1100
  771. bool
  772. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  773. default y
  774. config CPU_FREQ_SA1110
  775. bool
  776. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  777. default y
  778. config CPU_FREQ_INTEGRATOR
  779. tristate "CPUfreq driver for ARM Integrator CPUs"
  780. depends on ARCH_INTEGRATOR && CPU_FREQ
  781. default y
  782. help
  783. This enables the CPUfreq driver for ARM Integrator CPUs.
  784. For details, take a look at <file:Documentation/cpu-freq>.
  785. If in doubt, say Y.
  786. config CPU_FREQ_IMX
  787. tristate "CPUfreq driver for i.MX CPUs"
  788. depends on ARCH_IMX && CPU_FREQ
  789. default n
  790. help
  791. This enables the CPUfreq driver for i.MX CPUs.
  792. If in doubt, say N.
  793. config CPU_FREQ_PXA
  794. bool
  795. depends on CPU_FREQ && ARCH_PXA && PXA25x
  796. default y
  797. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  798. endmenu
  799. endif
  800. menu "Floating point emulation"
  801. comment "At least one emulation must be selected"
  802. config FPE_NWFPE
  803. bool "NWFPE math emulation"
  804. depends on !AEABI || OABI_COMPAT
  805. ---help---
  806. Say Y to include the NWFPE floating point emulator in the kernel.
  807. This is necessary to run most binaries. Linux does not currently
  808. support floating point hardware so you need to say Y here even if
  809. your machine has an FPA or floating point co-processor podule.
  810. You may say N here if you are going to load the Acorn FPEmulator
  811. early in the bootup.
  812. config FPE_NWFPE_XP
  813. bool "Support extended precision"
  814. depends on FPE_NWFPE
  815. help
  816. Say Y to include 80-bit support in the kernel floating-point
  817. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  818. Note that gcc does not generate 80-bit operations by default,
  819. so in most cases this option only enlarges the size of the
  820. floating point emulator without any good reason.
  821. You almost surely want to say N here.
  822. config FPE_FASTFPE
  823. bool "FastFPE math emulation (EXPERIMENTAL)"
  824. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  825. ---help---
  826. Say Y here to include the FAST floating point emulator in the kernel.
  827. This is an experimental much faster emulator which now also has full
  828. precision for the mantissa. It does not support any exceptions.
  829. It is very simple, and approximately 3-6 times faster than NWFPE.
  830. It should be sufficient for most programs. It may be not suitable
  831. for scientific calculations, but you have to check this for yourself.
  832. If you do not feel you need a faster FP emulation you should better
  833. choose NWFPE.
  834. config VFP
  835. bool "VFP-format floating point maths"
  836. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  837. help
  838. Say Y to include VFP support code in the kernel. This is needed
  839. if your hardware includes a VFP unit.
  840. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  841. release notes and additional status information.
  842. Say N if your target does not have VFP hardware.
  843. config VFPv3
  844. bool
  845. depends on VFP
  846. default y if CPU_V7
  847. config NEON
  848. bool "Advanced SIMD (NEON) Extension support"
  849. depends on VFPv3 && CPU_V7
  850. help
  851. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  852. Extension.
  853. endmenu
  854. menu "Userspace binary formats"
  855. source "fs/Kconfig.binfmt"
  856. config ARTHUR
  857. tristate "RISC OS personality"
  858. depends on !AEABI
  859. help
  860. Say Y here to include the kernel code necessary if you want to run
  861. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  862. experimental; if this sounds frightening, say N and sleep in peace.
  863. You can also say M here to compile this support as a module (which
  864. will be called arthur).
  865. endmenu
  866. menu "Power management options"
  867. source "kernel/power/Kconfig"
  868. config ARCH_SUSPEND_POSSIBLE
  869. def_bool y
  870. endmenu
  871. source "net/Kconfig"
  872. menu "Device Drivers"
  873. source "drivers/base/Kconfig"
  874. source "drivers/connector/Kconfig"
  875. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  876. source "drivers/mtd/Kconfig"
  877. endif
  878. source "drivers/parport/Kconfig"
  879. source "drivers/pnp/Kconfig"
  880. source "drivers/block/Kconfig"
  881. # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
  882. source "drivers/misc/Kconfig"
  883. source "drivers/ide/Kconfig"
  884. source "drivers/scsi/Kconfig"
  885. source "drivers/ata/Kconfig"
  886. source "drivers/md/Kconfig"
  887. source "drivers/message/fusion/Kconfig"
  888. source "drivers/ieee1394/Kconfig"
  889. source "drivers/message/i2o/Kconfig"
  890. source "drivers/net/Kconfig"
  891. source "drivers/isdn/Kconfig"
  892. # input before char - char/joystick depends on it. As does USB.
  893. source "drivers/input/Kconfig"
  894. source "drivers/char/Kconfig"
  895. source "drivers/i2c/Kconfig"
  896. source "drivers/spi/Kconfig"
  897. source "drivers/gpio/Kconfig"
  898. source "drivers/w1/Kconfig"
  899. source "drivers/power/Kconfig"
  900. source "drivers/hwmon/Kconfig"
  901. source "drivers/watchdog/Kconfig"
  902. source "drivers/ssb/Kconfig"
  903. #source "drivers/l3/Kconfig"
  904. source "drivers/mfd/Kconfig"
  905. source "drivers/media/Kconfig"
  906. source "drivers/video/Kconfig"
  907. source "sound/Kconfig"
  908. source "drivers/hid/Kconfig"
  909. source "drivers/usb/Kconfig"
  910. source "drivers/mmc/Kconfig"
  911. source "drivers/leds/Kconfig"
  912. source "drivers/rtc/Kconfig"
  913. source "drivers/dma/Kconfig"
  914. source "drivers/dca/Kconfig"
  915. endmenu
  916. source "fs/Kconfig"
  917. source "arch/arm/Kconfig.debug"
  918. source "security/Kconfig"
  919. source "crypto/Kconfig"
  920. source "lib/Kconfig"