Kconfig 25 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 GENERIC_HARDIRQS
  41. bool
  42. default y
  43. config TRACE_IRQFLAGS_SUPPORT
  44. bool
  45. default y
  46. config HARDIRQS_SW_RESEND
  47. bool
  48. default y
  49. config GENERIC_IRQ_PROBE
  50. bool
  51. default y
  52. config RWSEM_GENERIC_SPINLOCK
  53. bool
  54. default y
  55. config RWSEM_XCHGADD_ALGORITHM
  56. bool
  57. config GENERIC_HWEIGHT
  58. bool
  59. default y
  60. config GENERIC_CALIBRATE_DELAY
  61. bool
  62. default y
  63. config GENERIC_BUST_SPINLOCK
  64. bool
  65. config ARCH_MAY_HAVE_PC_FDC
  66. bool
  67. config GENERIC_ISA_DMA
  68. bool
  69. config FIQ
  70. bool
  71. config ARCH_MTD_XIP
  72. bool
  73. config VECTORS_BASE
  74. hex
  75. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  76. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  77. default 0x00000000
  78. help
  79. The base address of exception vectors.
  80. source "init/Kconfig"
  81. menu "System Type"
  82. choice
  83. prompt "ARM system type"
  84. default ARCH_VERSATILE
  85. config ARCH_AAEC2000
  86. bool "Agilent AAEC-2000 based"
  87. select ARM_AMBA
  88. help
  89. This enables support for systems based on the Agilent AAEC-2000
  90. config ARCH_INTEGRATOR
  91. bool "ARM Ltd. Integrator family"
  92. select ARM_AMBA
  93. select ICST525
  94. help
  95. Support for ARM's Integrator platform.
  96. config ARCH_REALVIEW
  97. bool "ARM Ltd. RealView family"
  98. select ARM_AMBA
  99. select ICST307
  100. help
  101. This enables support for ARM Ltd RealView boards.
  102. config ARCH_VERSATILE
  103. bool "ARM Ltd. Versatile family"
  104. select ARM_AMBA
  105. select ARM_VIC
  106. select ICST307
  107. help
  108. This enables support for ARM Ltd Versatile board.
  109. config ARCH_AT91
  110. bool "Atmel AT91"
  111. help
  112. This enables support for systems based on the Atmel AT91RM9200
  113. and AT91SAM9xxx processors.
  114. config ARCH_CLPS7500
  115. bool "Cirrus CL-PS7500FE"
  116. select TIMER_ACORN
  117. select ISA
  118. help
  119. Support for the Cirrus Logic PS7500FE system-on-a-chip.
  120. config ARCH_CLPS711X
  121. bool "Cirrus Logic CLPS711x/EP721x-based"
  122. help
  123. Support for Cirrus Logic 711x/721x based boards.
  124. config ARCH_CO285
  125. bool "Co-EBSA285"
  126. select FOOTBRIDGE
  127. select FOOTBRIDGE_ADDIN
  128. help
  129. Support for Intel's EBSA285 companion chip.
  130. config ARCH_EBSA110
  131. bool "EBSA-110"
  132. select ISA
  133. help
  134. This is an evaluation board for the StrongARM processor available
  135. from Digital. It has limited hardware on-board, including an
  136. Ethernet interface, two PCMCIA sockets, two serial ports and a
  137. parallel port.
  138. config ARCH_EP93XX
  139. bool "EP93xx-based"
  140. select ARM_AMBA
  141. select ARM_VIC
  142. help
  143. This enables support for the Cirrus EP93xx series of CPUs.
  144. config ARCH_FOOTBRIDGE
  145. bool "FootBridge"
  146. select FOOTBRIDGE
  147. help
  148. Support for systems based on the DC21285 companion chip
  149. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  150. config ARCH_NETX
  151. bool "Hilscher NetX based"
  152. select ARM_VIC
  153. help
  154. This enables support for systems based on the Hilscher NetX Soc
  155. config ARCH_H720X
  156. bool "Hynix HMS720x-based"
  157. select ISA_DMA_API
  158. help
  159. This enables support for systems based on the Hynix HMS720x
  160. config ARCH_IMX
  161. bool "IMX"
  162. help
  163. Support for Motorola's i.MX family of processors (MX1, MXL).
  164. config ARCH_IOP32X
  165. bool "IOP32x-based"
  166. depends on MMU
  167. select PLAT_IOP
  168. select PCI
  169. help
  170. Support for Intel's 80219 and IOP32X (XScale) family of
  171. processors.
  172. config ARCH_IOP33X
  173. bool "IOP33x-based"
  174. depends on MMU
  175. select PLAT_IOP
  176. select PCI
  177. help
  178. Support for Intel's IOP33X (XScale) family of processors.
  179. config ARCH_IXP4XX
  180. bool "IXP4xx-based"
  181. depends on MMU
  182. help
  183. Support for Intel's IXP4XX (XScale) family of processors.
  184. config ARCH_IXP2000
  185. bool "IXP2400/2800-based"
  186. depends on MMU
  187. select PCI
  188. help
  189. Support for Intel's IXP2400/2800 (XScale) family of processors.
  190. config ARCH_IXP23XX
  191. bool "IXP23XX-based"
  192. depends on MMU
  193. select PCI
  194. help
  195. Support for Intel's IXP23xx (XScale) family of processors.
  196. config ARCH_L7200
  197. bool "LinkUp-L7200"
  198. select FIQ
  199. help
  200. Say Y here if you intend to run this kernel on a LinkUp Systems
  201. L7200 Software Development Board which uses an ARM720T processor.
  202. Information on this board can be obtained at:
  203. <http://www.linkupsys.com/>
  204. If you have any questions or comments about the Linux kernel port
  205. to this board, send e-mail to <sjhill@cotw.com>.
  206. config ARCH_PNX4008
  207. bool "Philips Nexperia PNX4008 Mobile"
  208. help
  209. This enables support for Philips PNX4008 mobile platform.
  210. config ARCH_PXA
  211. bool "PXA2xx-based"
  212. depends on MMU
  213. select ARCH_MTD_XIP
  214. help
  215. Support for Intel's PXA2XX processor line.
  216. config ARCH_RPC
  217. bool "RiscPC"
  218. select ARCH_ACORN
  219. select FIQ
  220. select TIMER_ACORN
  221. select ARCH_MAY_HAVE_PC_FDC
  222. select ISA_DMA_API
  223. help
  224. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  225. CD-ROM interface, serial and parallel port, and the floppy drive.
  226. config ARCH_SA1100
  227. bool "SA1100-based"
  228. select ISA
  229. select ARCH_DISCONTIGMEM_ENABLE
  230. select ARCH_MTD_XIP
  231. help
  232. Support for StrongARM 11x0 based boards.
  233. config ARCH_S3C2410
  234. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442"
  235. help
  236. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  237. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  238. the Samsung SMDK2410 development board (and derivatives).
  239. config ARCH_SHARK
  240. bool "Shark"
  241. select ISA
  242. select ISA_DMA
  243. select PCI
  244. help
  245. Support for the StrongARM based Digital DNARD machine, also known
  246. as "Shark" (<http://www.shark-linux.de/shark.html>).
  247. config ARCH_LH7A40X
  248. bool "Sharp LH7A40X"
  249. help
  250. Say Y here for systems based on one of the Sharp LH7A40X
  251. System on a Chip processors. These CPUs include an ARM922T
  252. core with a wide array of integrated devices for
  253. hand-held and low-power applications.
  254. config ARCH_OMAP
  255. bool "TI OMAP"
  256. help
  257. Support for TI's OMAP platform (OMAP1 and OMAP2).
  258. endchoice
  259. source "arch/arm/mach-clps711x/Kconfig"
  260. source "arch/arm/mach-ep93xx/Kconfig"
  261. source "arch/arm/mach-footbridge/Kconfig"
  262. source "arch/arm/mach-integrator/Kconfig"
  263. source "arch/arm/mach-iop32x/Kconfig"
  264. source "arch/arm/mach-iop33x/Kconfig"
  265. source "arch/arm/mach-ixp4xx/Kconfig"
  266. source "arch/arm/mach-ixp2000/Kconfig"
  267. source "arch/arm/mach-ixp23xx/Kconfig"
  268. source "arch/arm/mach-pxa/Kconfig"
  269. source "arch/arm/mach-sa1100/Kconfig"
  270. source "arch/arm/plat-omap/Kconfig"
  271. source "arch/arm/mach-omap1/Kconfig"
  272. source "arch/arm/mach-omap2/Kconfig"
  273. source "arch/arm/mach-s3c2410/Kconfig"
  274. source "arch/arm/mach-lh7a40x/Kconfig"
  275. source "arch/arm/mach-imx/Kconfig"
  276. source "arch/arm/mach-h720x/Kconfig"
  277. source "arch/arm/mach-versatile/Kconfig"
  278. source "arch/arm/mach-aaec2000/Kconfig"
  279. source "arch/arm/mach-realview/Kconfig"
  280. source "arch/arm/mach-at91rm9200/Kconfig"
  281. source "arch/arm/mach-netx/Kconfig"
  282. # Definitions to make life easier
  283. config ARCH_ACORN
  284. bool
  285. config PLAT_IOP
  286. bool
  287. source arch/arm/mm/Kconfig
  288. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  289. config XSCALE_PMU
  290. bool
  291. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  292. default y
  293. if !MMU
  294. source "arch/arm/Kconfig-nommu"
  295. endif
  296. endmenu
  297. source "arch/arm/common/Kconfig"
  298. config FORCE_MAX_ZONEORDER
  299. int
  300. depends on SA1111
  301. default "9"
  302. menu "Bus support"
  303. config ARM_AMBA
  304. bool
  305. config ISA
  306. bool
  307. help
  308. Find out whether you have ISA slots on your motherboard. ISA is the
  309. name of a bus system, i.e. the way the CPU talks to the other stuff
  310. inside your box. Other bus systems are PCI, EISA, MicroChannel
  311. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  312. newer boards don't support it. If you have ISA, say Y, otherwise N.
  313. # Select ISA DMA controller support
  314. config ISA_DMA
  315. bool
  316. select ISA_DMA_API
  317. # Select ISA DMA interface
  318. config ISA_DMA_API
  319. bool
  320. config PCI
  321. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX
  322. help
  323. Find out whether you have a PCI motherboard. PCI is the name of a
  324. bus system, i.e. the way the CPU talks to the other stuff inside
  325. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  326. VESA. If you have PCI, say Y, otherwise N.
  327. The PCI-HOWTO, available from
  328. <http://www.tldp.org/docs.html#howto>, contains valuable
  329. information about which PCI hardware does work under Linux and which
  330. doesn't.
  331. # Select the host bridge type
  332. config PCI_HOST_VIA82C505
  333. bool
  334. depends on PCI && ARCH_SHARK
  335. default y
  336. source "drivers/pci/Kconfig"
  337. source "drivers/pcmcia/Kconfig"
  338. endmenu
  339. menu "Kernel Features"
  340. config SMP
  341. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  342. depends on EXPERIMENTAL && REALVIEW_MPCORE
  343. help
  344. This enables support for systems with more than one CPU. If you have
  345. a system with only one CPU, like most personal computers, say N. If
  346. you have a system with more than one CPU, say Y.
  347. If you say N here, the kernel will run on single and multiprocessor
  348. machines, but will use only one CPU of a multiprocessor machine. If
  349. you say Y here, the kernel will run on many, but not all, single
  350. processor machines. On a single processor machine, the kernel will
  351. run faster if you say N here.
  352. See also the <file:Documentation/smp.txt>,
  353. <file:Documentation/i386/IO-APIC.txt>,
  354. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  355. <http://www.linuxdoc.org/docs.html#howto>.
  356. If you don't know what to do here, say N.
  357. config NR_CPUS
  358. int "Maximum number of CPUs (2-32)"
  359. range 2 32
  360. depends on SMP
  361. default "4"
  362. config HOTPLUG_CPU
  363. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  364. depends on SMP && HOTPLUG && EXPERIMENTAL
  365. help
  366. Say Y here to experiment with turning CPUs off and on. CPUs
  367. can be controlled through /sys/devices/system/cpu.
  368. config LOCAL_TIMERS
  369. bool "Use local timer interrupts"
  370. depends on SMP && REALVIEW_MPCORE
  371. default y
  372. help
  373. Enable support for local timers on SMP platforms, rather then the
  374. legacy IPI broadcast method. Local timers allows the system
  375. accounting to be spread across the timer interval, preventing a
  376. "thundering herd" at every timer tick.
  377. config PREEMPT
  378. bool "Preemptible Kernel (EXPERIMENTAL)"
  379. depends on EXPERIMENTAL
  380. help
  381. This option reduces the latency of the kernel when reacting to
  382. real-time or interactive events by allowing a low priority process to
  383. be preempted even if it is in kernel mode executing a system call.
  384. This allows applications to run more reliably even when the system is
  385. under load.
  386. Say Y here if you are building a kernel for a desktop, embedded
  387. or real-time system. Say N if you are unsure.
  388. config NO_IDLE_HZ
  389. bool "Dynamic tick timer"
  390. help
  391. Select this option if you want to disable continuous timer ticks
  392. and have them programmed to occur as required. This option saves
  393. power as the system can remain in idle state for longer.
  394. By default dynamic tick is disabled during the boot, and can be
  395. manually enabled with:
  396. echo 1 > /sys/devices/system/timer/timer0/dyn_tick
  397. Alternatively, if you want dynamic tick automatically enabled
  398. during boot, pass "dyntick=enable" via the kernel command string.
  399. Please note that dynamic tick may affect the accuracy of
  400. timekeeping on some platforms depending on the implementation.
  401. Currently at least OMAP, PXA2xx and SA11x0 platforms are known
  402. to have accurate timekeeping with dynamic tick.
  403. config HZ
  404. int
  405. default 128 if ARCH_L7200
  406. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  407. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  408. default 100
  409. config AEABI
  410. bool "Use the ARM EABI to compile the kernel"
  411. help
  412. This option allows for the kernel to be compiled using the latest
  413. ARM ABI (aka EABI). This is only useful if you are using a user
  414. space environment that is also compiled with EABI.
  415. Since there are major incompatibilities between the legacy ABI and
  416. EABI, especially with regard to structure member alignment, this
  417. option also changes the kernel syscall calling convention to
  418. disambiguate both ABIs and allow for backward compatibility support
  419. (selected with CONFIG_OABI_COMPAT).
  420. To use this you need GCC version 4.0.0 or later.
  421. config OABI_COMPAT
  422. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  423. depends on AEABI && EXPERIMENTAL
  424. default y
  425. help
  426. This option preserves the old syscall interface along with the
  427. new (ARM EABI) one. It also provides a compatibility layer to
  428. intercept syscalls that have structure arguments which layout
  429. in memory differs between the legacy ABI and the new ARM EABI
  430. (only for non "thumb" binaries). This option adds a tiny
  431. overhead to all syscalls and produces a slightly larger kernel.
  432. If you know you'll be using only pure EABI user space then you
  433. can say N here. If this option is not selected and you attempt
  434. to execute a legacy ABI binary then the result will be
  435. UNPREDICTABLE (in fact it can be predicted that it won't work
  436. at all). If in doubt say Y.
  437. config ARCH_DISCONTIGMEM_ENABLE
  438. bool
  439. default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
  440. help
  441. Say Y to support efficient handling of discontiguous physical memory,
  442. for architectures which are either NUMA (Non-Uniform Memory Access)
  443. or have huge holes in the physical address space for other reasons.
  444. See <file:Documentation/vm/numa> for more.
  445. config NODES_SHIFT
  446. int
  447. default "4" if ARCH_LH7A40X
  448. default "2"
  449. depends on NEED_MULTIPLE_NODES
  450. source "mm/Kconfig"
  451. config LEDS
  452. bool "Timer and CPU usage LEDs"
  453. depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
  454. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  455. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  456. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  457. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  458. ARCH_AT91RM9200 || MACH_TRIZEPS4
  459. help
  460. If you say Y here, the LEDs on your machine will be used
  461. to provide useful information about your current system status.
  462. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  463. be able to select which LEDs are active using the options below. If
  464. you are compiling a kernel for the EBSA-110 or the LART however, the
  465. red LED will simply flash regularly to indicate that the system is
  466. still functional. It is safe to say Y here if you have a CATS
  467. system, but the driver will do nothing.
  468. config LEDS_TIMER
  469. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  470. MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
  471. depends on LEDS
  472. default y if ARCH_EBSA110
  473. help
  474. If you say Y here, one of the system LEDs (the green one on the
  475. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  476. will flash regularly to indicate that the system is still
  477. operational. This is mainly useful to kernel hackers who are
  478. debugging unstable kernels.
  479. The LART uses the same LED for both Timer LED and CPU usage LED
  480. functions. You may choose to use both, but the Timer LED function
  481. will overrule the CPU usage LED.
  482. config LEDS_CPU
  483. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  484. !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
  485. depends on LEDS
  486. help
  487. If you say Y here, the red LED will be used to give a good real
  488. time indication of CPU usage, by lighting whenever the idle task
  489. is not currently executing.
  490. The LART uses the same LED for both Timer LED and CPU usage LED
  491. functions. You may choose to use both, but the Timer LED function
  492. will overrule the CPU usage LED.
  493. config ALIGNMENT_TRAP
  494. bool
  495. depends on CPU_CP15_MMU
  496. default y if !ARCH_EBSA110
  497. help
  498. ARM processors can not fetch/store information which is not
  499. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  500. address divisible by 4. On 32-bit ARM processors, these non-aligned
  501. fetch/store instructions will be emulated in software if you say
  502. here, which has a severe performance impact. This is necessary for
  503. correct operation of some network protocols. With an IP-only
  504. configuration it is safe to say N, otherwise say Y.
  505. endmenu
  506. menu "Boot options"
  507. # Compressed boot loader in ROM. Yes, we really want to ask about
  508. # TEXT and BSS so we preserve their values in the config files.
  509. config ZBOOT_ROM_TEXT
  510. hex "Compressed ROM boot loader base address"
  511. default "0"
  512. help
  513. The physical address at which the ROM-able zImage is to be
  514. placed in the target. Platforms which normally make use of
  515. ROM-able zImage formats normally set this to a suitable
  516. value in their defconfig file.
  517. If ZBOOT_ROM is not enabled, this has no effect.
  518. config ZBOOT_ROM_BSS
  519. hex "Compressed ROM boot loader BSS address"
  520. default "0"
  521. help
  522. The base address of an area of read/write memory in the target
  523. for the ROM-able zImage which must be available while the
  524. decompressor is running. It must be large enough to hold the
  525. entire decompressed kernel plus an additional 128 KiB.
  526. Platforms which normally make use of ROM-able zImage formats
  527. normally set this to a suitable value in their defconfig file.
  528. If ZBOOT_ROM is not enabled, this has no effect.
  529. config ZBOOT_ROM
  530. bool "Compressed boot loader in ROM/flash"
  531. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  532. help
  533. Say Y here if you intend to execute your compressed kernel image
  534. (zImage) directly from ROM or flash. If unsure, say N.
  535. config CMDLINE
  536. string "Default kernel command string"
  537. default ""
  538. help
  539. On some architectures (EBSA110 and CATS), there is currently no way
  540. for the boot loader to pass arguments to the kernel. For these
  541. architectures, you should supply some command-line options at build
  542. time by entering them here. As a minimum, you should specify the
  543. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  544. config XIP_KERNEL
  545. bool "Kernel Execute-In-Place from ROM"
  546. depends on !ZBOOT_ROM
  547. help
  548. Execute-In-Place allows the kernel to run from non-volatile storage
  549. directly addressable by the CPU, such as NOR flash. This saves RAM
  550. space since the text section of the kernel is not loaded from flash
  551. to RAM. Read-write sections, such as the data section and stack,
  552. are still copied to RAM. The XIP kernel is not compressed since
  553. it has to run directly from flash, so it will take more space to
  554. store it. The flash address used to link the kernel object files,
  555. and for storing it, is configuration dependent. Therefore, if you
  556. say Y here, you must know the proper physical address where to
  557. store the kernel image depending on your own flash memory usage.
  558. Also note that the make target becomes "make xipImage" rather than
  559. "make zImage" or "make Image". The final kernel binary to put in
  560. ROM memory will be arch/arm/boot/xipImage.
  561. If unsure, say N.
  562. config XIP_PHYS_ADDR
  563. hex "XIP Kernel Physical Location"
  564. depends on XIP_KERNEL
  565. default "0x00080000"
  566. help
  567. This is the physical address in your flash memory the kernel will
  568. be linked for and stored to. This address is dependent on your
  569. own flash usage.
  570. endmenu
  571. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP)
  572. menu "CPU Frequency scaling"
  573. source "drivers/cpufreq/Kconfig"
  574. config CPU_FREQ_SA1100
  575. bool
  576. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  577. default y
  578. config CPU_FREQ_SA1110
  579. bool
  580. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  581. default y
  582. config CPU_FREQ_INTEGRATOR
  583. tristate "CPUfreq driver for ARM Integrator CPUs"
  584. depends on ARCH_INTEGRATOR && CPU_FREQ
  585. default y
  586. help
  587. This enables the CPUfreq driver for ARM Integrator CPUs.
  588. For details, take a look at <file:Documentation/cpu-freq>.
  589. If in doubt, say Y.
  590. endmenu
  591. endif
  592. menu "Floating point emulation"
  593. comment "At least one emulation must be selected"
  594. config FPE_NWFPE
  595. bool "NWFPE math emulation"
  596. depends on !AEABI || OABI_COMPAT
  597. ---help---
  598. Say Y to include the NWFPE floating point emulator in the kernel.
  599. This is necessary to run most binaries. Linux does not currently
  600. support floating point hardware so you need to say Y here even if
  601. your machine has an FPA or floating point co-processor podule.
  602. You may say N here if you are going to load the Acorn FPEmulator
  603. early in the bootup.
  604. config FPE_NWFPE_XP
  605. bool "Support extended precision"
  606. depends on FPE_NWFPE
  607. help
  608. Say Y to include 80-bit support in the kernel floating-point
  609. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  610. Note that gcc does not generate 80-bit operations by default,
  611. so in most cases this option only enlarges the size of the
  612. floating point emulator without any good reason.
  613. You almost surely want to say N here.
  614. config FPE_FASTFPE
  615. bool "FastFPE math emulation (EXPERIMENTAL)"
  616. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  617. ---help---
  618. Say Y here to include the FAST floating point emulator in the kernel.
  619. This is an experimental much faster emulator which now also has full
  620. precision for the mantissa. It does not support any exceptions.
  621. It is very simple, and approximately 3-6 times faster than NWFPE.
  622. It should be sufficient for most programs. It may be not suitable
  623. for scientific calculations, but you have to check this for yourself.
  624. If you do not feel you need a faster FP emulation you should better
  625. choose NWFPE.
  626. config VFP
  627. bool "VFP-format floating point maths"
  628. depends on CPU_V6 || CPU_ARM926T
  629. help
  630. Say Y to include VFP support code in the kernel. This is needed
  631. if your hardware includes a VFP unit.
  632. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  633. release notes and additional status information.
  634. Say N if your target does not have VFP hardware.
  635. endmenu
  636. menu "Userspace binary formats"
  637. source "fs/Kconfig.binfmt"
  638. config ARTHUR
  639. tristate "RISC OS personality"
  640. depends on !AEABI
  641. help
  642. Say Y here to include the kernel code necessary if you want to run
  643. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  644. experimental; if this sounds frightening, say N and sleep in peace.
  645. You can also say M here to compile this support as a module (which
  646. will be called arthur).
  647. endmenu
  648. menu "Power management options"
  649. source "kernel/power/Kconfig"
  650. config APM
  651. tristate "Advanced Power Management Emulation"
  652. ---help---
  653. APM is a BIOS specification for saving power using several different
  654. techniques. This is mostly useful for battery powered laptops with
  655. APM compliant BIOSes. If you say Y here, the system time will be
  656. reset after a RESUME operation, the /proc/apm device will provide
  657. battery status information, and user-space programs will receive
  658. notification of APM "events" (e.g. battery status change).
  659. In order to use APM, you will need supporting software. For location
  660. and more information, read <file:Documentation/pm.txt> and the
  661. Battery Powered Linux mini-HOWTO, available from
  662. <http://www.tldp.org/docs.html#howto>.
  663. This driver does not spin down disk drives (see the hdparm(8)
  664. manpage ("man 8 hdparm") for that), and it doesn't turn off
  665. VESA-compliant "green" monitors.
  666. Generally, if you don't have a battery in your machine, there isn't
  667. much point in using this driver and you should say N. If you get
  668. random kernel OOPSes or reboots that don't seem to be related to
  669. anything, try disabling/enabling this option (or disabling/enabling
  670. APM in your BIOS).
  671. endmenu
  672. source "net/Kconfig"
  673. menu "Device Drivers"
  674. source "drivers/base/Kconfig"
  675. source "drivers/connector/Kconfig"
  676. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  677. source "drivers/mtd/Kconfig"
  678. endif
  679. source "drivers/parport/Kconfig"
  680. source "drivers/pnp/Kconfig"
  681. source "drivers/block/Kconfig"
  682. source "drivers/acorn/block/Kconfig"
  683. if PCMCIA || ARCH_CLPS7500 || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX \
  684. || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
  685. || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
  686. || ARCH_IXP23XX
  687. source "drivers/ide/Kconfig"
  688. endif
  689. source "drivers/scsi/Kconfig"
  690. source "drivers/md/Kconfig"
  691. source "drivers/message/fusion/Kconfig"
  692. source "drivers/ieee1394/Kconfig"
  693. source "drivers/message/i2o/Kconfig"
  694. source "drivers/net/Kconfig"
  695. source "drivers/isdn/Kconfig"
  696. # input before char - char/joystick depends on it. As does USB.
  697. source "drivers/input/Kconfig"
  698. source "drivers/char/Kconfig"
  699. source "drivers/i2c/Kconfig"
  700. source "drivers/spi/Kconfig"
  701. source "drivers/w1/Kconfig"
  702. source "drivers/hwmon/Kconfig"
  703. #source "drivers/l3/Kconfig"
  704. source "drivers/misc/Kconfig"
  705. source "drivers/mfd/Kconfig"
  706. source "drivers/leds/Kconfig"
  707. source "drivers/media/Kconfig"
  708. source "drivers/video/Kconfig"
  709. source "sound/Kconfig"
  710. source "drivers/usb/Kconfig"
  711. source "drivers/mmc/Kconfig"
  712. source "drivers/rtc/Kconfig"
  713. endmenu
  714. source "fs/Kconfig"
  715. source "arch/arm/oprofile/Kconfig"
  716. source "arch/arm/Kconfig.debug"
  717. source "security/Kconfig"
  718. source "crypto/Kconfig"
  719. source "lib/Kconfig"