Kconfig 24 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. help
  11. The ARM series is a line of low-power-consumption RISC chip designs
  12. licensed by ARM Ltd and targeted at embedded applications and
  13. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  14. manufactured, but legacy ARM-based PC hardware remains popular in
  15. Europe. There is an ARM Linux project with a web page at
  16. <http://www.arm.linux.org.uk/>.
  17. config MMU
  18. bool
  19. default y
  20. config EISA
  21. bool
  22. ---help---
  23. The Extended Industry Standard Architecture (EISA) bus was
  24. developed as an open alternative to the IBM MicroChannel bus.
  25. The EISA bus provided some of the features of the IBM MicroChannel
  26. bus while maintaining backward compatibility with cards made for
  27. the older ISA bus. The EISA bus saw limited use between 1988 and
  28. 1995 when it was made obsolete by the PCI bus.
  29. Say Y here if you are building a kernel for an EISA-based machine.
  30. Otherwise, say N.
  31. config SBUS
  32. bool
  33. config MCA
  34. bool
  35. help
  36. MicroChannel Architecture is found in some IBM PS/2 machines and
  37. laptops. It is a bus system similar to PCI or ISA. See
  38. <file:Documentation/mca.txt> (and especially the web page given
  39. there) before attempting to build an MCA bus kernel.
  40. config RWSEM_GENERIC_SPINLOCK
  41. bool
  42. default y
  43. config RWSEM_XCHGADD_ALGORITHM
  44. bool
  45. config GENERIC_HWEIGHT
  46. bool
  47. default y
  48. config GENERIC_CALIBRATE_DELAY
  49. bool
  50. default y
  51. config GENERIC_BUST_SPINLOCK
  52. bool
  53. config ARCH_MAY_HAVE_PC_FDC
  54. bool
  55. config GENERIC_ISA_DMA
  56. bool
  57. config FIQ
  58. bool
  59. config ARCH_MTD_XIP
  60. bool
  61. source "init/Kconfig"
  62. menu "System Type"
  63. choice
  64. prompt "ARM system type"
  65. default ARCH_VERSATILE
  66. config ARCH_CLPS7500
  67. bool "Cirrus-CL-PS7500FE"
  68. select TIMER_ACORN
  69. select ISA
  70. help
  71. Support for the Cirrus Logic PS7500FE system-on-a-chip.
  72. config ARCH_CLPS711X
  73. bool "CLPS711x/EP721x-based"
  74. help
  75. Support for Cirrus Logic 711x/721x based boards.
  76. config ARCH_CO285
  77. bool "Co-EBSA285"
  78. select FOOTBRIDGE
  79. select FOOTBRIDGE_ADDIN
  80. help
  81. Support for Intel's EBSA285 companion chip.
  82. config ARCH_EBSA110
  83. bool "EBSA-110"
  84. select ISA
  85. help
  86. This is an evaluation board for the StrongARM processor available
  87. from Digital. It has limited hardware on-board, including an
  88. Ethernet interface, two PCMCIA sockets, two serial ports and a
  89. parallel port.
  90. config ARCH_EP93XX
  91. bool "EP93xx-based"
  92. select ARM_AMBA
  93. select ARM_VIC
  94. help
  95. This enables support for the Cirrus EP93xx series of CPUs.
  96. config ARCH_FOOTBRIDGE
  97. bool "FootBridge"
  98. select FOOTBRIDGE
  99. help
  100. Support for systems based on the DC21285 companion chip
  101. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  102. config ARCH_INTEGRATOR
  103. bool "Integrator"
  104. select ARM_AMBA
  105. select ICST525
  106. help
  107. Support for ARM's Integrator platform.
  108. config ARCH_IOP3XX
  109. bool "IOP3xx-based"
  110. select PCI
  111. help
  112. Support for Intel's IOP3XX (XScale) family of processors.
  113. config ARCH_IXP4XX
  114. bool "IXP4xx-based"
  115. select DMABOUNCE
  116. select PCI
  117. help
  118. Support for Intel's IXP4XX (XScale) family of processors.
  119. config ARCH_IXP2000
  120. bool "IXP2400/2800-based"
  121. select PCI
  122. help
  123. Support for Intel's IXP2400/2800 (XScale) family of processors.
  124. config ARCH_IXP23XX
  125. bool "IXP23XX-based"
  126. select PCI
  127. help
  128. Support for Intel's IXP23xx (XScale) family of processors.
  129. config ARCH_L7200
  130. bool "LinkUp-L7200"
  131. select FIQ
  132. help
  133. Say Y here if you intend to run this kernel on a LinkUp Systems
  134. L7200 Software Development Board which uses an ARM720T processor.
  135. Information on this board can be obtained at:
  136. <http://www.linkupsys.com/>
  137. If you have any questions or comments about the Linux kernel port
  138. to this board, send e-mail to <sjhill@cotw.com>.
  139. config ARCH_PXA
  140. bool "PXA2xx-based"
  141. select ARCH_MTD_XIP
  142. help
  143. Support for Intel's PXA2XX processor line.
  144. config ARCH_RPC
  145. bool "RiscPC"
  146. select ARCH_ACORN
  147. select FIQ
  148. select TIMER_ACORN
  149. select ARCH_MAY_HAVE_PC_FDC
  150. select ISA_DMA_API
  151. help
  152. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  153. CD-ROM interface, serial and parallel port, and the floppy drive.
  154. config ARCH_SA1100
  155. bool "SA1100-based"
  156. select ISA
  157. select ARCH_DISCONTIGMEM_ENABLE
  158. select ARCH_MTD_XIP
  159. help
  160. Support for StrongARM 11x0 based boards.
  161. config ARCH_S3C2410
  162. bool "Samsung S3C2410"
  163. help
  164. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  165. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  166. the Samsung SMDK2410 development board (and derivatives).
  167. config ARCH_SHARK
  168. bool "Shark"
  169. select ISA
  170. select ISA_DMA
  171. select PCI
  172. help
  173. Support for the StrongARM based Digital DNARD machine, also known
  174. as "Shark" (<http://www.shark-linux.de/shark.html>).
  175. config ARCH_LH7A40X
  176. bool "Sharp LH7A40X"
  177. help
  178. Say Y here for systems based on one of the Sharp LH7A40X
  179. System on a Chip processors. These CPUs include an ARM922T
  180. core with a wide array of integrated devices for
  181. hand-held and low-power applications.
  182. config ARCH_OMAP
  183. bool "TI OMAP"
  184. help
  185. Support for TI's OMAP platform (OMAP1 and OMAP2).
  186. config ARCH_VERSATILE
  187. bool "Versatile"
  188. select ARM_AMBA
  189. select ARM_VIC
  190. select ICST307
  191. help
  192. This enables support for ARM Ltd Versatile board.
  193. config ARCH_REALVIEW
  194. bool "RealView"
  195. select ARM_AMBA
  196. select ICST307
  197. help
  198. This enables support for ARM Ltd RealView boards.
  199. config ARCH_IMX
  200. bool "IMX"
  201. help
  202. Support for Motorola's i.MX family of processors (MX1, MXL).
  203. config ARCH_H720X
  204. bool "Hynix-HMS720x-based"
  205. select ISA_DMA_API
  206. help
  207. This enables support for systems based on the Hynix HMS720x
  208. config ARCH_AAEC2000
  209. bool "Agilent AAEC-2000 based"
  210. select ARM_AMBA
  211. help
  212. This enables support for systems based on the Agilent AAEC-2000
  213. config ARCH_AT91RM9200
  214. bool "AT91RM9200"
  215. help
  216. Say Y here if you intend to run this kernel on an Atmel
  217. AT91RM9200-based board.
  218. endchoice
  219. source "arch/arm/mach-clps711x/Kconfig"
  220. source "arch/arm/mach-ep93xx/Kconfig"
  221. source "arch/arm/mach-footbridge/Kconfig"
  222. source "arch/arm/mach-integrator/Kconfig"
  223. source "arch/arm/mach-iop3xx/Kconfig"
  224. source "arch/arm/mach-ixp4xx/Kconfig"
  225. source "arch/arm/mach-ixp2000/Kconfig"
  226. source "arch/arm/mach-ixp23xx/Kconfig"
  227. source "arch/arm/mach-pxa/Kconfig"
  228. source "arch/arm/mach-sa1100/Kconfig"
  229. source "arch/arm/plat-omap/Kconfig"
  230. source "arch/arm/mach-omap1/Kconfig"
  231. source "arch/arm/mach-omap2/Kconfig"
  232. source "arch/arm/mach-s3c2410/Kconfig"
  233. source "arch/arm/mach-lh7a40x/Kconfig"
  234. source "arch/arm/mach-imx/Kconfig"
  235. source "arch/arm/mach-h720x/Kconfig"
  236. source "arch/arm/mach-versatile/Kconfig"
  237. source "arch/arm/mach-aaec2000/Kconfig"
  238. source "arch/arm/mach-realview/Kconfig"
  239. source "arch/arm/mach-at91rm9200/Kconfig"
  240. # Definitions to make life easier
  241. config ARCH_ACORN
  242. bool
  243. source arch/arm/mm/Kconfig
  244. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  245. config XSCALE_PMU
  246. bool
  247. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  248. default y
  249. endmenu
  250. source "arch/arm/common/Kconfig"
  251. config FORCE_MAX_ZONEORDER
  252. int
  253. depends on SA1111
  254. default "9"
  255. menu "Bus support"
  256. config ARM_AMBA
  257. bool
  258. config ISA
  259. bool
  260. help
  261. Find out whether you have ISA slots on your motherboard. ISA is the
  262. name of a bus system, i.e. the way the CPU talks to the other stuff
  263. inside your box. Other bus systems are PCI, EISA, MicroChannel
  264. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  265. newer boards don't support it. If you have ISA, say Y, otherwise N.
  266. # Select ISA DMA controller support
  267. config ISA_DMA
  268. bool
  269. select ISA_DMA_API
  270. # Select ISA DMA interface
  271. config ISA_DMA_API
  272. bool
  273. config PCI
  274. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB
  275. help
  276. Find out whether you have a PCI motherboard. PCI is the name of a
  277. bus system, i.e. the way the CPU talks to the other stuff inside
  278. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  279. VESA. If you have PCI, say Y, otherwise N.
  280. The PCI-HOWTO, available from
  281. <http://www.tldp.org/docs.html#howto>, contains valuable
  282. information about which PCI hardware does work under Linux and which
  283. doesn't.
  284. # Select the host bridge type
  285. config PCI_HOST_VIA82C505
  286. bool
  287. depends on PCI && ARCH_SHARK
  288. default y
  289. source "drivers/pci/Kconfig"
  290. source "drivers/pcmcia/Kconfig"
  291. endmenu
  292. menu "Kernel Features"
  293. config SMP
  294. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  295. depends on EXPERIMENTAL && REALVIEW_MPCORE
  296. help
  297. This enables support for systems with more than one CPU. If you have
  298. a system with only one CPU, like most personal computers, say N. If
  299. you have a system with more than one CPU, say Y.
  300. If you say N here, the kernel will run on single and multiprocessor
  301. machines, but will use only one CPU of a multiprocessor machine. If
  302. you say Y here, the kernel will run on many, but not all, single
  303. processor machines. On a single processor machine, the kernel will
  304. run faster if you say N here.
  305. See also the <file:Documentation/smp.txt>,
  306. <file:Documentation/i386/IO-APIC.txt>,
  307. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  308. <http://www.linuxdoc.org/docs.html#howto>.
  309. If you don't know what to do here, say N.
  310. config NR_CPUS
  311. int "Maximum number of CPUs (2-32)"
  312. range 2 32
  313. depends on SMP
  314. default "4"
  315. config HOTPLUG_CPU
  316. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  317. depends on SMP && HOTPLUG && EXPERIMENTAL
  318. help
  319. Say Y here to experiment with turning CPUs off and on. CPUs
  320. can be controlled through /sys/devices/system/cpu.
  321. config LOCAL_TIMERS
  322. bool "Use local timer interrupts"
  323. depends on SMP && REALVIEW_MPCORE
  324. default y
  325. help
  326. Enable support for local timers on SMP platforms, rather then the
  327. legacy IPI broadcast method. Local timers allows the system
  328. accounting to be spread across the timer interval, preventing a
  329. "thundering herd" at every timer tick.
  330. config PREEMPT
  331. bool "Preemptible Kernel (EXPERIMENTAL)"
  332. depends on EXPERIMENTAL
  333. help
  334. This option reduces the latency of the kernel when reacting to
  335. real-time or interactive events by allowing a low priority process to
  336. be preempted even if it is in kernel mode executing a system call.
  337. This allows applications to run more reliably even when the system is
  338. under load.
  339. Say Y here if you are building a kernel for a desktop, embedded
  340. or real-time system. Say N if you are unsure.
  341. config NO_IDLE_HZ
  342. bool "Dynamic tick timer"
  343. help
  344. Select this option if you want to disable continuous timer ticks
  345. and have them programmed to occur as required. This option saves
  346. power as the system can remain in idle state for longer.
  347. By default dynamic tick is disabled during the boot, and can be
  348. manually enabled with:
  349. echo 1 > /sys/devices/system/timer/timer0/dyn_tick
  350. Alternatively, if you want dynamic tick automatically enabled
  351. during boot, pass "dyntick=enable" via the kernel command string.
  352. Please note that dynamic tick may affect the accuracy of
  353. timekeeping on some platforms depending on the implementation.
  354. Currently at least OMAP, PXA2xx and SA11x0 platforms are known
  355. to have accurate timekeeping with dynamic tick.
  356. config HZ
  357. int
  358. default 128 if ARCH_L7200
  359. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  360. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  361. default 100
  362. config AEABI
  363. bool "Use the ARM EABI to compile the kernel"
  364. help
  365. This option allows for the kernel to be compiled using the latest
  366. ARM ABI (aka EABI). This is only useful if you are using a user
  367. space environment that is also compiled with EABI.
  368. Since there are major incompatibilities between the legacy ABI and
  369. EABI, especially with regard to structure member alignment, this
  370. option also changes the kernel syscall calling convention to
  371. disambiguate both ABIs and allow for backward compatibility support
  372. (selected with CONFIG_OABI_COMPAT).
  373. To use this you need GCC version 4.0.0 or later.
  374. config OABI_COMPAT
  375. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  376. depends on AEABI && EXPERIMENTAL
  377. default y
  378. help
  379. This option preserves the old syscall interface along with the
  380. new (ARM EABI) one. It also provides a compatibility layer to
  381. intercept syscalls that have structure arguments which layout
  382. in memory differs between the legacy ABI and the new ARM EABI
  383. (only for non "thumb" binaries). This option adds a tiny
  384. overhead to all syscalls and produces a slightly larger kernel.
  385. If you know you'll be using only pure EABI user space then you
  386. can say N here. If this option is not selected and you attempt
  387. to execute a legacy ABI binary then the result will be
  388. UNPREDICTABLE (in fact it can be predicted that it won't work
  389. at all). If in doubt say Y.
  390. config ARCH_DISCONTIGMEM_ENABLE
  391. bool
  392. default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
  393. help
  394. Say Y to support efficient handling of discontiguous physical memory,
  395. for architectures which are either NUMA (Non-Uniform Memory Access)
  396. or have huge holes in the physical address space for other reasons.
  397. See <file:Documentation/vm/numa> for more.
  398. source "mm/Kconfig"
  399. config LEDS
  400. bool "Timer and CPU usage LEDs"
  401. depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
  402. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  403. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  404. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  405. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  406. ARCH_AT91RM9200
  407. help
  408. If you say Y here, the LEDs on your machine will be used
  409. to provide useful information about your current system status.
  410. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  411. be able to select which LEDs are active using the options below. If
  412. you are compiling a kernel for the EBSA-110 or the LART however, the
  413. red LED will simply flash regularly to indicate that the system is
  414. still functional. It is safe to say Y here if you have a CATS
  415. system, but the driver will do nothing.
  416. config LEDS_TIMER
  417. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  418. MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
  419. depends on LEDS
  420. default y if ARCH_EBSA110
  421. help
  422. If you say Y here, one of the system LEDs (the green one on the
  423. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  424. will flash regularly to indicate that the system is still
  425. operational. This is mainly useful to kernel hackers who are
  426. debugging unstable kernels.
  427. The LART uses the same LED for both Timer LED and CPU usage LED
  428. functions. You may choose to use both, but the Timer LED function
  429. will overrule the CPU usage LED.
  430. config LEDS_CPU
  431. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  432. !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
  433. depends on LEDS
  434. help
  435. If you say Y here, the red LED will be used to give a good real
  436. time indication of CPU usage, by lighting whenever the idle task
  437. is not currently executing.
  438. The LART uses the same LED for both Timer LED and CPU usage LED
  439. functions. You may choose to use both, but the Timer LED function
  440. will overrule the CPU usage LED.
  441. config ALIGNMENT_TRAP
  442. bool
  443. default y if !ARCH_EBSA110
  444. help
  445. ARM processors can not fetch/store information which is not
  446. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  447. address divisible by 4. On 32-bit ARM processors, these non-aligned
  448. fetch/store instructions will be emulated in software if you say
  449. here, which has a severe performance impact. This is necessary for
  450. correct operation of some network protocols. With an IP-only
  451. configuration it is safe to say N, otherwise say Y.
  452. endmenu
  453. menu "Boot options"
  454. # Compressed boot loader in ROM. Yes, we really want to ask about
  455. # TEXT and BSS so we preserve their values in the config files.
  456. config ZBOOT_ROM_TEXT
  457. hex "Compressed ROM boot loader base address"
  458. default "0"
  459. help
  460. The physical address at which the ROM-able zImage is to be
  461. placed in the target. Platforms which normally make use of
  462. ROM-able zImage formats normally set this to a suitable
  463. value in their defconfig file.
  464. If ZBOOT_ROM is not enabled, this has no effect.
  465. config ZBOOT_ROM_BSS
  466. hex "Compressed ROM boot loader BSS address"
  467. default "0"
  468. help
  469. The base address of 64KiB of read/write memory in the target
  470. for the ROM-able zImage, which must be available while the
  471. decompressor is running. Platforms which normally make use of
  472. ROM-able zImage formats normally set this to a suitable
  473. value in their defconfig file.
  474. If ZBOOT_ROM is not enabled, this has no effect.
  475. config ZBOOT_ROM
  476. bool "Compressed boot loader in ROM/flash"
  477. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  478. help
  479. Say Y here if you intend to execute your compressed kernel image
  480. (zImage) directly from ROM or flash. If unsure, say N.
  481. config CMDLINE
  482. string "Default kernel command string"
  483. default ""
  484. help
  485. On some architectures (EBSA110 and CATS), there is currently no way
  486. for the boot loader to pass arguments to the kernel. For these
  487. architectures, you should supply some command-line options at build
  488. time by entering them here. As a minimum, you should specify the
  489. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  490. config XIP_KERNEL
  491. bool "Kernel Execute-In-Place from ROM"
  492. depends on !ZBOOT_ROM
  493. help
  494. Execute-In-Place allows the kernel to run from non-volatile storage
  495. directly addressable by the CPU, such as NOR flash. This saves RAM
  496. space since the text section of the kernel is not loaded from flash
  497. to RAM. Read-write sections, such as the data section and stack,
  498. are still copied to RAM. The XIP kernel is not compressed since
  499. it has to run directly from flash, so it will take more space to
  500. store it. The flash address used to link the kernel object files,
  501. and for storing it, is configuration dependent. Therefore, if you
  502. say Y here, you must know the proper physical address where to
  503. store the kernel image depending on your own flash memory usage.
  504. Also note that the make target becomes "make xipImage" rather than
  505. "make zImage" or "make Image". The final kernel binary to put in
  506. ROM memory will be arch/arm/boot/xipImage.
  507. If unsure, say N.
  508. config XIP_PHYS_ADDR
  509. hex "XIP Kernel Physical Location"
  510. depends on XIP_KERNEL
  511. default "0x00080000"
  512. help
  513. This is the physical address in your flash memory the kernel will
  514. be linked for and stored to. This address is dependent on your
  515. own flash usage.
  516. endmenu
  517. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1)
  518. menu "CPU Frequency scaling"
  519. source "drivers/cpufreq/Kconfig"
  520. config CPU_FREQ_SA1100
  521. bool
  522. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  523. default y
  524. config CPU_FREQ_SA1110
  525. bool
  526. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  527. default y
  528. config CPU_FREQ_INTEGRATOR
  529. tristate "CPUfreq driver for ARM Integrator CPUs"
  530. depends on ARCH_INTEGRATOR && CPU_FREQ
  531. default y
  532. help
  533. This enables the CPUfreq driver for ARM Integrator CPUs.
  534. For details, take a look at <file:Documentation/cpu-freq>.
  535. If in doubt, say Y.
  536. endmenu
  537. endif
  538. menu "Floating point emulation"
  539. comment "At least one emulation must be selected"
  540. config FPE_NWFPE
  541. bool "NWFPE math emulation"
  542. depends on !AEABI || OABI_COMPAT
  543. ---help---
  544. Say Y to include the NWFPE floating point emulator in the kernel.
  545. This is necessary to run most binaries. Linux does not currently
  546. support floating point hardware so you need to say Y here even if
  547. your machine has an FPA or floating point co-processor podule.
  548. You may say N here if you are going to load the Acorn FPEmulator
  549. early in the bootup.
  550. config FPE_NWFPE_XP
  551. bool "Support extended precision"
  552. depends on FPE_NWFPE
  553. help
  554. Say Y to include 80-bit support in the kernel floating-point
  555. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  556. Note that gcc does not generate 80-bit operations by default,
  557. so in most cases this option only enlarges the size of the
  558. floating point emulator without any good reason.
  559. You almost surely want to say N here.
  560. config FPE_FASTFPE
  561. bool "FastFPE math emulation (EXPERIMENTAL)"
  562. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  563. ---help---
  564. Say Y here to include the FAST floating point emulator in the kernel.
  565. This is an experimental much faster emulator which now also has full
  566. precision for the mantissa. It does not support any exceptions.
  567. It is very simple, and approximately 3-6 times faster than NWFPE.
  568. It should be sufficient for most programs. It may be not suitable
  569. for scientific calculations, but you have to check this for yourself.
  570. If you do not feel you need a faster FP emulation you should better
  571. choose NWFPE.
  572. config VFP
  573. bool "VFP-format floating point maths"
  574. depends on CPU_V6 || CPU_ARM926T
  575. help
  576. Say Y to include VFP support code in the kernel. This is needed
  577. if your hardware includes a VFP unit.
  578. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  579. release notes and additional status information.
  580. Say N if your target does not have VFP hardware.
  581. endmenu
  582. menu "Userspace binary formats"
  583. source "fs/Kconfig.binfmt"
  584. config ARTHUR
  585. tristate "RISC OS personality"
  586. depends on !AEABI
  587. help
  588. Say Y here to include the kernel code necessary if you want to run
  589. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  590. experimental; if this sounds frightening, say N and sleep in peace.
  591. You can also say M here to compile this support as a module (which
  592. will be called arthur).
  593. endmenu
  594. menu "Power management options"
  595. source "kernel/power/Kconfig"
  596. config APM
  597. tristate "Advanced Power Management Emulation"
  598. ---help---
  599. APM is a BIOS specification for saving power using several different
  600. techniques. This is mostly useful for battery powered laptops with
  601. APM compliant BIOSes. If you say Y here, the system time will be
  602. reset after a RESUME operation, the /proc/apm device will provide
  603. battery status information, and user-space programs will receive
  604. notification of APM "events" (e.g. battery status change).
  605. In order to use APM, you will need supporting software. For location
  606. and more information, read <file:Documentation/pm.txt> and the
  607. Battery Powered Linux mini-HOWTO, available from
  608. <http://www.tldp.org/docs.html#howto>.
  609. This driver does not spin down disk drives (see the hdparm(8)
  610. manpage ("man 8 hdparm") for that), and it doesn't turn off
  611. VESA-compliant "green" monitors.
  612. Generally, if you don't have a battery in your machine, there isn't
  613. much point in using this driver and you should say N. If you get
  614. random kernel OOPSes or reboots that don't seem to be related to
  615. anything, try disabling/enabling this option (or disabling/enabling
  616. APM in your BIOS).
  617. endmenu
  618. source "net/Kconfig"
  619. menu "Device Drivers"
  620. source "drivers/base/Kconfig"
  621. source "drivers/connector/Kconfig"
  622. if ALIGNMENT_TRAP
  623. source "drivers/mtd/Kconfig"
  624. endif
  625. source "drivers/parport/Kconfig"
  626. source "drivers/pnp/Kconfig"
  627. source "drivers/block/Kconfig"
  628. source "drivers/acorn/block/Kconfig"
  629. if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
  630. || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
  631. || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
  632. || ARCH_IXP23XX
  633. source "drivers/ide/Kconfig"
  634. endif
  635. source "drivers/scsi/Kconfig"
  636. source "drivers/md/Kconfig"
  637. source "drivers/message/fusion/Kconfig"
  638. source "drivers/ieee1394/Kconfig"
  639. source "drivers/message/i2o/Kconfig"
  640. source "drivers/net/Kconfig"
  641. source "drivers/isdn/Kconfig"
  642. # input before char - char/joystick depends on it. As does USB.
  643. source "drivers/input/Kconfig"
  644. source "drivers/char/Kconfig"
  645. source "drivers/i2c/Kconfig"
  646. source "drivers/spi/Kconfig"
  647. source "drivers/w1/Kconfig"
  648. source "drivers/hwmon/Kconfig"
  649. #source "drivers/l3/Kconfig"
  650. source "drivers/misc/Kconfig"
  651. source "drivers/mfd/Kconfig"
  652. source "drivers/media/Kconfig"
  653. source "drivers/video/Kconfig"
  654. source "sound/Kconfig"
  655. source "drivers/usb/Kconfig"
  656. source "drivers/mmc/Kconfig"
  657. source "drivers/rtc/Kconfig"
  658. endmenu
  659. source "fs/Kconfig"
  660. source "arch/arm/oprofile/Kconfig"
  661. source "arch/arm/Kconfig.debug"
  662. source "security/Kconfig"
  663. source "crypto/Kconfig"
  664. source "lib/Kconfig"