Kconfig 28 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. help
  12. The ARM series is a line of low-power-consumption RISC chip designs
  13. licensed by ARM Ltd and targeted at embedded applications and
  14. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  15. manufactured, but legacy ARM-based PC hardware remains popular in
  16. Europe. There is an ARM Linux project with a web page at
  17. <http://www.arm.linux.org.uk/>.
  18. config SYS_SUPPORTS_APM_EMULATION
  19. bool
  20. config GENERIC_GPIO
  21. bool
  22. default n
  23. config GENERIC_TIME
  24. bool
  25. default n
  26. config GENERIC_CLOCKEVENTS
  27. bool
  28. default n
  29. config MMU
  30. bool
  31. default y
  32. config NO_IOPORT
  33. bool
  34. default n
  35. config EISA
  36. bool
  37. ---help---
  38. The Extended Industry Standard Architecture (EISA) bus was
  39. developed as an open alternative to the IBM MicroChannel bus.
  40. The EISA bus provided some of the features of the IBM MicroChannel
  41. bus while maintaining backward compatibility with cards made for
  42. the older ISA bus. The EISA bus saw limited use between 1988 and
  43. 1995 when it was made obsolete by the PCI bus.
  44. Say Y here if you are building a kernel for an EISA-based machine.
  45. Otherwise, say N.
  46. config SBUS
  47. bool
  48. config MCA
  49. bool
  50. help
  51. MicroChannel Architecture is found in some IBM PS/2 machines and
  52. laptops. It is a bus system similar to PCI or ISA. See
  53. <file:Documentation/mca.txt> (and especially the web page given
  54. there) before attempting to build an MCA bus kernel.
  55. config GENERIC_HARDIRQS
  56. bool
  57. default y
  58. config STACKTRACE_SUPPORT
  59. bool
  60. default y
  61. config LOCKDEP_SUPPORT
  62. bool
  63. default y
  64. config TRACE_IRQFLAGS_SUPPORT
  65. bool
  66. default y
  67. config HARDIRQS_SW_RESEND
  68. bool
  69. default y
  70. config GENERIC_IRQ_PROBE
  71. bool
  72. default y
  73. config RWSEM_GENERIC_SPINLOCK
  74. bool
  75. default y
  76. config RWSEM_XCHGADD_ALGORITHM
  77. bool
  78. config ARCH_HAS_ILOG2_U32
  79. bool
  80. default n
  81. config ARCH_HAS_ILOG2_U64
  82. bool
  83. default n
  84. config GENERIC_HWEIGHT
  85. bool
  86. default y
  87. config GENERIC_CALIBRATE_DELAY
  88. bool
  89. default y
  90. config ARCH_MAY_HAVE_PC_FDC
  91. bool
  92. config ZONE_DMA
  93. bool
  94. default y
  95. config GENERIC_ISA_DMA
  96. bool
  97. config FIQ
  98. bool
  99. config ARCH_MTD_XIP
  100. bool
  101. config VECTORS_BASE
  102. hex
  103. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  104. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  105. default 0x00000000
  106. help
  107. The base address of exception vectors.
  108. source "init/Kconfig"
  109. menu "System Type"
  110. choice
  111. prompt "ARM system type"
  112. default ARCH_VERSATILE
  113. config ARCH_AAEC2000
  114. bool "Agilent AAEC-2000 based"
  115. select ARM_AMBA
  116. help
  117. This enables support for systems based on the Agilent AAEC-2000
  118. config ARCH_INTEGRATOR
  119. bool "ARM Ltd. Integrator family"
  120. select ARM_AMBA
  121. select ICST525
  122. help
  123. Support for ARM's Integrator platform.
  124. config ARCH_REALVIEW
  125. bool "ARM Ltd. RealView family"
  126. select ARM_AMBA
  127. select ICST307
  128. help
  129. This enables support for ARM Ltd RealView boards.
  130. config ARCH_VERSATILE
  131. bool "ARM Ltd. Versatile family"
  132. select ARM_AMBA
  133. select ARM_VIC
  134. select ICST307
  135. select GENERIC_TIME
  136. select GENERIC_CLOCKEVENTS
  137. help
  138. This enables support for ARM Ltd Versatile board.
  139. config ARCH_AT91
  140. bool "Atmel AT91"
  141. select GENERIC_GPIO
  142. help
  143. This enables support for systems based on the Atmel AT91RM9200
  144. and AT91SAM9xxx processors.
  145. config ARCH_CLPS7500
  146. bool "Cirrus CL-PS7500FE"
  147. select TIMER_ACORN
  148. select ISA
  149. select NO_IOPORT
  150. help
  151. Support for the Cirrus Logic PS7500FE system-on-a-chip.
  152. config ARCH_CLPS711X
  153. bool "Cirrus Logic CLPS711x/EP721x-based"
  154. help
  155. Support for Cirrus Logic 711x/721x based boards.
  156. config ARCH_CO285
  157. bool "Co-EBSA285"
  158. select FOOTBRIDGE
  159. select FOOTBRIDGE_ADDIN
  160. help
  161. Support for Intel's EBSA285 companion chip.
  162. config ARCH_EBSA110
  163. bool "EBSA-110"
  164. select ISA
  165. select NO_IOPORT
  166. help
  167. This is an evaluation board for the StrongARM processor available
  168. from Digital. It has limited hardware on-board, including an
  169. Ethernet interface, two PCMCIA sockets, two serial ports and a
  170. parallel port.
  171. config ARCH_EP93XX
  172. bool "EP93xx-based"
  173. select ARM_AMBA
  174. select ARM_VIC
  175. help
  176. This enables support for the Cirrus EP93xx series of CPUs.
  177. config ARCH_FOOTBRIDGE
  178. bool "FootBridge"
  179. select FOOTBRIDGE
  180. help
  181. Support for systems based on the DC21285 companion chip
  182. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  183. config ARCH_NETX
  184. bool "Hilscher NetX based"
  185. select ARM_VIC
  186. help
  187. This enables support for systems based on the Hilscher NetX Soc
  188. config ARCH_H720X
  189. bool "Hynix HMS720x-based"
  190. select ISA_DMA_API
  191. help
  192. This enables support for systems based on the Hynix HMS720x
  193. config ARCH_IMX
  194. bool "IMX"
  195. select GENERIC_GPIO
  196. select GENERIC_TIME
  197. select GENERIC_CLOCKEVENTS
  198. help
  199. Support for Motorola's i.MX family of processors (MX1, MXL).
  200. config ARCH_IOP13XX
  201. bool "IOP13xx-based"
  202. depends on MMU
  203. select PLAT_IOP
  204. select PCI
  205. select ARCH_SUPPORTS_MSI
  206. help
  207. Support for Intel's IOP13XX (XScale) family of processors.
  208. config ARCH_IOP32X
  209. bool "IOP32x-based"
  210. depends on MMU
  211. select PLAT_IOP
  212. select PCI
  213. help
  214. Support for Intel's 80219 and IOP32X (XScale) family of
  215. processors.
  216. config ARCH_IOP33X
  217. bool "IOP33x-based"
  218. depends on MMU
  219. select PLAT_IOP
  220. select PCI
  221. help
  222. Support for Intel's IOP33X (XScale) family of processors.
  223. config ARCH_IXP23XX
  224. bool "IXP23XX-based"
  225. depends on MMU
  226. select PCI
  227. help
  228. Support for Intel's IXP23xx (XScale) family of processors.
  229. config ARCH_IXP2000
  230. bool "IXP2400/2800-based"
  231. depends on MMU
  232. select PCI
  233. help
  234. Support for Intel's IXP2400/2800 (XScale) family of processors.
  235. config ARCH_IXP4XX
  236. bool "IXP4xx-based"
  237. depends on MMU
  238. select GENERIC_GPIO
  239. select GENERIC_TIME
  240. select GENERIC_CLOCKEVENTS
  241. help
  242. Support for Intel's IXP4XX (XScale) family of processors.
  243. config ARCH_L7200
  244. bool "LinkUp-L7200"
  245. select FIQ
  246. help
  247. Say Y here if you intend to run this kernel on a LinkUp Systems
  248. L7200 Software Development Board which uses an ARM720T processor.
  249. Information on this board can be obtained at:
  250. <http://www.linkupsys.com/>
  251. If you have any questions or comments about the Linux kernel port
  252. to this board, send e-mail to <sjhill@cotw.com>.
  253. config ARCH_KS8695
  254. bool "Micrel/Kendin KS8695"
  255. select GENERIC_GPIO
  256. help
  257. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  258. System-on-Chip devices.
  259. config ARCH_NS9XXX
  260. bool "NetSilicon NS9xxx"
  261. help
  262. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  263. System.
  264. <http://www.digi.com/products/microprocessors/index.jsp>
  265. config ARCH_MXC
  266. bool "Freescale MXC/iMX-based"
  267. select ARCH_MTD_XIP
  268. help
  269. Support for Freescale MXC/iMX-based family of processors
  270. config ARCH_PNX4008
  271. bool "Philips Nexperia PNX4008 Mobile"
  272. help
  273. This enables support for Philips PNX4008 mobile platform.
  274. config ARCH_PXA
  275. bool "PXA2xx-based"
  276. depends on MMU
  277. select ARCH_MTD_XIP
  278. select GENERIC_GPIO
  279. select GENERIC_TIME
  280. select GENERIC_CLOCKEVENTS
  281. help
  282. Support for Intel's PXA2XX processor line.
  283. config ARCH_RPC
  284. bool "RiscPC"
  285. select ARCH_ACORN
  286. select FIQ
  287. select TIMER_ACORN
  288. select ARCH_MAY_HAVE_PC_FDC
  289. select ISA_DMA_API
  290. select NO_IOPORT
  291. help
  292. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  293. CD-ROM interface, serial and parallel port, and the floppy drive.
  294. config ARCH_SA1100
  295. bool "SA1100-based"
  296. select ISA
  297. select ARCH_DISCONTIGMEM_ENABLE
  298. select ARCH_MTD_XIP
  299. select GENERIC_GPIO
  300. help
  301. Support for StrongARM 11x0 based boards.
  302. config ARCH_S3C2410
  303. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  304. select GENERIC_GPIO
  305. help
  306. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  307. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  308. the Samsung SMDK2410 development board (and derivatives).
  309. config ARCH_SHARK
  310. bool "Shark"
  311. select ISA
  312. select ISA_DMA
  313. select PCI
  314. help
  315. Support for the StrongARM based Digital DNARD machine, also known
  316. as "Shark" (<http://www.shark-linux.de/shark.html>).
  317. config ARCH_LH7A40X
  318. bool "Sharp LH7A40X"
  319. help
  320. Say Y here for systems based on one of the Sharp LH7A40X
  321. System on a Chip processors. These CPUs include an ARM922T
  322. core with a wide array of integrated devices for
  323. hand-held and low-power applications.
  324. config ARCH_DAVINCI
  325. bool "TI DaVinci"
  326. select GENERIC_TIME
  327. select GENERIC_CLOCKEVENTS
  328. select GENERIC_GPIO
  329. help
  330. Support for TI's DaVinci platform.
  331. config ARCH_OMAP
  332. bool "TI OMAP"
  333. select GENERIC_GPIO
  334. select GENERIC_TIME
  335. help
  336. Support for TI's OMAP platform (OMAP1 and OMAP2).
  337. endchoice
  338. source "arch/arm/mach-clps711x/Kconfig"
  339. source "arch/arm/mach-ep93xx/Kconfig"
  340. source "arch/arm/mach-footbridge/Kconfig"
  341. source "arch/arm/mach-integrator/Kconfig"
  342. source "arch/arm/mach-iop32x/Kconfig"
  343. source "arch/arm/mach-iop33x/Kconfig"
  344. source "arch/arm/mach-iop13xx/Kconfig"
  345. source "arch/arm/mach-ixp4xx/Kconfig"
  346. source "arch/arm/mach-ixp2000/Kconfig"
  347. source "arch/arm/mach-ixp23xx/Kconfig"
  348. source "arch/arm/mach-pxa/Kconfig"
  349. source "arch/arm/mach-sa1100/Kconfig"
  350. source "arch/arm/plat-omap/Kconfig"
  351. source "arch/arm/mach-omap1/Kconfig"
  352. source "arch/arm/mach-omap2/Kconfig"
  353. source "arch/arm/plat-s3c24xx/Kconfig"
  354. source "arch/arm/plat-s3c/Kconfig"
  355. if ARCH_S3C2410
  356. source "arch/arm/mach-s3c2400/Kconfig"
  357. source "arch/arm/mach-s3c2410/Kconfig"
  358. source "arch/arm/mach-s3c2412/Kconfig"
  359. source "arch/arm/mach-s3c2440/Kconfig"
  360. source "arch/arm/mach-s3c2442/Kconfig"
  361. source "arch/arm/mach-s3c2443/Kconfig"
  362. endif
  363. source "arch/arm/mach-lh7a40x/Kconfig"
  364. source "arch/arm/mach-imx/Kconfig"
  365. source "arch/arm/mach-h720x/Kconfig"
  366. source "arch/arm/mach-versatile/Kconfig"
  367. source "arch/arm/mach-aaec2000/Kconfig"
  368. source "arch/arm/mach-realview/Kconfig"
  369. source "arch/arm/mach-at91/Kconfig"
  370. source "arch/arm/plat-mxc/Kconfig"
  371. source "arch/arm/mach-netx/Kconfig"
  372. source "arch/arm/mach-ns9xxx/Kconfig"
  373. source "arch/arm/mach-davinci/Kconfig"
  374. source "arch/arm/mach-ks8695/Kconfig"
  375. # Definitions to make life easier
  376. config ARCH_ACORN
  377. bool
  378. config PLAT_IOP
  379. bool
  380. source arch/arm/mm/Kconfig
  381. config IWMMXT
  382. bool "Enable iWMMXt support"
  383. depends on CPU_XSCALE || CPU_XSC3
  384. default y if PXA27x
  385. help
  386. Enable support for iWMMXt context switching at run time if
  387. running on a CPU that supports it.
  388. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  389. config XSCALE_PMU
  390. bool
  391. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  392. default y
  393. if !MMU
  394. source "arch/arm/Kconfig-nommu"
  395. endif
  396. endmenu
  397. source "arch/arm/common/Kconfig"
  398. config FORCE_MAX_ZONEORDER
  399. int
  400. depends on SA1111
  401. default "9"
  402. menu "Bus support"
  403. config ARM_AMBA
  404. bool
  405. config ISA
  406. bool
  407. help
  408. Find out whether you have ISA slots on your motherboard. ISA is the
  409. name of a bus system, i.e. the way the CPU talks to the other stuff
  410. inside your box. Other bus systems are PCI, EISA, MicroChannel
  411. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  412. newer boards don't support it. If you have ISA, say Y, otherwise N.
  413. # Select ISA DMA controller support
  414. config ISA_DMA
  415. bool
  416. select ISA_DMA_API
  417. # Select ISA DMA interface
  418. config ISA_DMA_API
  419. bool
  420. config PCI
  421. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695
  422. help
  423. Find out whether you have a PCI motherboard. PCI is the name of a
  424. bus system, i.e. the way the CPU talks to the other stuff inside
  425. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  426. VESA. If you have PCI, say Y, otherwise N.
  427. The PCI-HOWTO, available from
  428. <http://www.tldp.org/docs.html#howto>, contains valuable
  429. information about which PCI hardware does work under Linux and which
  430. doesn't.
  431. config PCI_SYSCALL
  432. def_bool PCI
  433. # Select the host bridge type
  434. config PCI_HOST_VIA82C505
  435. bool
  436. depends on PCI && ARCH_SHARK
  437. default y
  438. source "drivers/pci/Kconfig"
  439. source "drivers/pcmcia/Kconfig"
  440. endmenu
  441. menu "Kernel Features"
  442. source "kernel/time/Kconfig"
  443. config SMP
  444. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  445. depends on EXPERIMENTAL && REALVIEW_MPCORE
  446. help
  447. This enables support for systems with more than one CPU. If you have
  448. a system with only one CPU, like most personal computers, say N. If
  449. you have a system with more than one CPU, say Y.
  450. If you say N here, the kernel will run on single and multiprocessor
  451. machines, but will use only one CPU of a multiprocessor machine. If
  452. you say Y here, the kernel will run on many, but not all, single
  453. processor machines. On a single processor machine, the kernel will
  454. run faster if you say N here.
  455. See also the <file:Documentation/smp.txt>,
  456. <file:Documentation/i386/IO-APIC.txt>,
  457. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  458. <http://www.linuxdoc.org/docs.html#howto>.
  459. If you don't know what to do here, say N.
  460. config NR_CPUS
  461. int "Maximum number of CPUs (2-32)"
  462. range 2 32
  463. depends on SMP
  464. default "4"
  465. config HOTPLUG_CPU
  466. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  467. depends on SMP && HOTPLUG && EXPERIMENTAL
  468. help
  469. Say Y here to experiment with turning CPUs off and on. CPUs
  470. can be controlled through /sys/devices/system/cpu.
  471. config LOCAL_TIMERS
  472. bool "Use local timer interrupts"
  473. depends on SMP && REALVIEW_MPCORE
  474. default y
  475. help
  476. Enable support for local timers on SMP platforms, rather then the
  477. legacy IPI broadcast method. Local timers allows the system
  478. accounting to be spread across the timer interval, preventing a
  479. "thundering herd" at every timer tick.
  480. config PREEMPT
  481. bool "Preemptible Kernel (EXPERIMENTAL)"
  482. depends on EXPERIMENTAL
  483. help
  484. This option reduces the latency of the kernel when reacting to
  485. real-time or interactive events by allowing a low priority process to
  486. be preempted even if it is in kernel mode executing a system call.
  487. This allows applications to run more reliably even when the system is
  488. under load.
  489. Say Y here if you are building a kernel for a desktop, embedded
  490. or real-time system. Say N if you are unsure.
  491. config NO_IDLE_HZ
  492. bool "Dynamic tick timer"
  493. depends on !GENERIC_CLOCKEVENTS
  494. help
  495. Select this option if you want to disable continuous timer ticks
  496. and have them programmed to occur as required. This option saves
  497. power as the system can remain in idle state for longer.
  498. By default dynamic tick is disabled during the boot, and can be
  499. manually enabled with:
  500. echo 1 > /sys/devices/system/timer/timer0/dyn_tick
  501. Alternatively, if you want dynamic tick automatically enabled
  502. during boot, pass "dyntick=enable" via the kernel command string.
  503. Please note that dynamic tick may affect the accuracy of
  504. timekeeping on some platforms depending on the implementation.
  505. Currently at least OMAP, PXA2xx and SA11x0 platforms are known
  506. to have accurate timekeeping with dynamic tick.
  507. config HZ
  508. int
  509. default 128 if ARCH_L7200
  510. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  511. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  512. default 100
  513. config AEABI
  514. bool "Use the ARM EABI to compile the kernel"
  515. help
  516. This option allows for the kernel to be compiled using the latest
  517. ARM ABI (aka EABI). This is only useful if you are using a user
  518. space environment that is also compiled with EABI.
  519. Since there are major incompatibilities between the legacy ABI and
  520. EABI, especially with regard to structure member alignment, this
  521. option also changes the kernel syscall calling convention to
  522. disambiguate both ABIs and allow for backward compatibility support
  523. (selected with CONFIG_OABI_COMPAT).
  524. To use this you need GCC version 4.0.0 or later.
  525. config OABI_COMPAT
  526. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  527. depends on AEABI && EXPERIMENTAL
  528. default y
  529. help
  530. This option preserves the old syscall interface along with the
  531. new (ARM EABI) one. It also provides a compatibility layer to
  532. intercept syscalls that have structure arguments which layout
  533. in memory differs between the legacy ABI and the new ARM EABI
  534. (only for non "thumb" binaries). This option adds a tiny
  535. overhead to all syscalls and produces a slightly larger kernel.
  536. If you know you'll be using only pure EABI user space then you
  537. can say N here. If this option is not selected and you attempt
  538. to execute a legacy ABI binary then the result will be
  539. UNPREDICTABLE (in fact it can be predicted that it won't work
  540. at all). If in doubt say Y.
  541. config ARCH_DISCONTIGMEM_ENABLE
  542. bool
  543. default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
  544. help
  545. Say Y to support efficient handling of discontiguous physical memory,
  546. for architectures which are either NUMA (Non-Uniform Memory Access)
  547. or have huge holes in the physical address space for other reasons.
  548. See <file:Documentation/vm/numa> for more.
  549. config NODES_SHIFT
  550. int
  551. default "4" if ARCH_LH7A40X
  552. default "2"
  553. depends on NEED_MULTIPLE_NODES
  554. source "mm/Kconfig"
  555. config LEDS
  556. bool "Timer and CPU usage LEDs"
  557. depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
  558. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  559. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  560. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  561. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  562. ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
  563. ARCH_KS8695
  564. help
  565. If you say Y here, the LEDs on your machine will be used
  566. to provide useful information about your current system status.
  567. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  568. be able to select which LEDs are active using the options below. If
  569. you are compiling a kernel for the EBSA-110 or the LART however, the
  570. red LED will simply flash regularly to indicate that the system is
  571. still functional. It is safe to say Y here if you have a CATS
  572. system, but the driver will do nothing.
  573. config LEDS_TIMER
  574. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  575. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  576. || MACH_OMAP_PERSEUS2
  577. depends on LEDS
  578. depends on !GENERIC_CLOCKEVENTS
  579. default y if ARCH_EBSA110
  580. help
  581. If you say Y here, one of the system LEDs (the green one on the
  582. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  583. will flash regularly to indicate that the system is still
  584. operational. This is mainly useful to kernel hackers who are
  585. debugging unstable kernels.
  586. The LART uses the same LED for both Timer LED and CPU usage LED
  587. functions. You may choose to use both, but the Timer LED function
  588. will overrule the CPU usage LED.
  589. config LEDS_CPU
  590. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  591. !ARCH_OMAP) \
  592. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  593. || MACH_OMAP_PERSEUS2
  594. depends on LEDS
  595. help
  596. If you say Y here, the red LED will be used to give a good real
  597. time indication of CPU usage, by lighting whenever the idle task
  598. is not currently executing.
  599. The LART uses the same LED for both Timer LED and CPU usage LED
  600. functions. You may choose to use both, but the Timer LED function
  601. will overrule the CPU usage LED.
  602. config ALIGNMENT_TRAP
  603. bool
  604. depends on CPU_CP15_MMU
  605. default y if !ARCH_EBSA110
  606. help
  607. ARM processors cannot fetch/store information which is not
  608. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  609. address divisible by 4. On 32-bit ARM processors, these non-aligned
  610. fetch/store instructions will be emulated in software if you say
  611. here, which has a severe performance impact. This is necessary for
  612. correct operation of some network protocols. With an IP-only
  613. configuration it is safe to say N, otherwise say Y.
  614. endmenu
  615. menu "Boot options"
  616. # Compressed boot loader in ROM. Yes, we really want to ask about
  617. # TEXT and BSS so we preserve their values in the config files.
  618. config ZBOOT_ROM_TEXT
  619. hex "Compressed ROM boot loader base address"
  620. default "0"
  621. help
  622. The physical address at which the ROM-able zImage is to be
  623. placed in the target. Platforms which normally make use of
  624. ROM-able zImage formats normally set this to a suitable
  625. value in their defconfig file.
  626. If ZBOOT_ROM is not enabled, this has no effect.
  627. config ZBOOT_ROM_BSS
  628. hex "Compressed ROM boot loader BSS address"
  629. default "0"
  630. help
  631. The base address of an area of read/write memory in the target
  632. for the ROM-able zImage which must be available while the
  633. decompressor is running. It must be large enough to hold the
  634. entire decompressed kernel plus an additional 128 KiB.
  635. Platforms which normally make use of ROM-able zImage formats
  636. normally set this to a suitable value in their defconfig file.
  637. If ZBOOT_ROM is not enabled, this has no effect.
  638. config ZBOOT_ROM
  639. bool "Compressed boot loader in ROM/flash"
  640. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  641. help
  642. Say Y here if you intend to execute your compressed kernel image
  643. (zImage) directly from ROM or flash. If unsure, say N.
  644. config CMDLINE
  645. string "Default kernel command string"
  646. default ""
  647. help
  648. On some architectures (EBSA110 and CATS), there is currently no way
  649. for the boot loader to pass arguments to the kernel. For these
  650. architectures, you should supply some command-line options at build
  651. time by entering them here. As a minimum, you should specify the
  652. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  653. config XIP_KERNEL
  654. bool "Kernel Execute-In-Place from ROM"
  655. depends on !ZBOOT_ROM
  656. help
  657. Execute-In-Place allows the kernel to run from non-volatile storage
  658. directly addressable by the CPU, such as NOR flash. This saves RAM
  659. space since the text section of the kernel is not loaded from flash
  660. to RAM. Read-write sections, such as the data section and stack,
  661. are still copied to RAM. The XIP kernel is not compressed since
  662. it has to run directly from flash, so it will take more space to
  663. store it. The flash address used to link the kernel object files,
  664. and for storing it, is configuration dependent. Therefore, if you
  665. say Y here, you must know the proper physical address where to
  666. store the kernel image depending on your own flash memory usage.
  667. Also note that the make target becomes "make xipImage" rather than
  668. "make zImage" or "make Image". The final kernel binary to put in
  669. ROM memory will be arch/arm/boot/xipImage.
  670. If unsure, say N.
  671. config XIP_PHYS_ADDR
  672. hex "XIP Kernel Physical Location"
  673. depends on XIP_KERNEL
  674. default "0x00080000"
  675. help
  676. This is the physical address in your flash memory the kernel will
  677. be linked for and stored to. This address is dependent on your
  678. own flash usage.
  679. config KEXEC
  680. bool "Kexec system call (EXPERIMENTAL)"
  681. depends on EXPERIMENTAL
  682. help
  683. kexec is a system call that implements the ability to shutdown your
  684. current kernel, and to start another kernel. It is like a reboot
  685. but it is indepedent of the system firmware. And like a reboot
  686. you can start any kernel with it, not just Linux.
  687. It is an ongoing process to be certain the hardware in a machine
  688. is properly shutdown, so do not be surprised if this code does not
  689. initially work for you. It may help to enable device hotplugging
  690. support.
  691. endmenu
  692. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX )
  693. menu "CPU Frequency scaling"
  694. source "drivers/cpufreq/Kconfig"
  695. config CPU_FREQ_SA1100
  696. bool
  697. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  698. default y
  699. config CPU_FREQ_SA1110
  700. bool
  701. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  702. default y
  703. config CPU_FREQ_INTEGRATOR
  704. tristate "CPUfreq driver for ARM Integrator CPUs"
  705. depends on ARCH_INTEGRATOR && CPU_FREQ
  706. default y
  707. help
  708. This enables the CPUfreq driver for ARM Integrator CPUs.
  709. For details, take a look at <file:Documentation/cpu-freq>.
  710. If in doubt, say Y.
  711. config CPU_FREQ_IMX
  712. tristate "CPUfreq driver for i.MX CPUs"
  713. depends on ARCH_IMX && CPU_FREQ
  714. default n
  715. help
  716. This enables the CPUfreq driver for i.MX CPUs.
  717. If in doubt, say N.
  718. endmenu
  719. endif
  720. menu "Floating point emulation"
  721. comment "At least one emulation must be selected"
  722. config FPE_NWFPE
  723. bool "NWFPE math emulation"
  724. depends on !AEABI || OABI_COMPAT
  725. ---help---
  726. Say Y to include the NWFPE floating point emulator in the kernel.
  727. This is necessary to run most binaries. Linux does not currently
  728. support floating point hardware so you need to say Y here even if
  729. your machine has an FPA or floating point co-processor podule.
  730. You may say N here if you are going to load the Acorn FPEmulator
  731. early in the bootup.
  732. config FPE_NWFPE_XP
  733. bool "Support extended precision"
  734. depends on FPE_NWFPE
  735. help
  736. Say Y to include 80-bit support in the kernel floating-point
  737. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  738. Note that gcc does not generate 80-bit operations by default,
  739. so in most cases this option only enlarges the size of the
  740. floating point emulator without any good reason.
  741. You almost surely want to say N here.
  742. config FPE_FASTFPE
  743. bool "FastFPE math emulation (EXPERIMENTAL)"
  744. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  745. ---help---
  746. Say Y here to include the FAST floating point emulator in the kernel.
  747. This is an experimental much faster emulator which now also has full
  748. precision for the mantissa. It does not support any exceptions.
  749. It is very simple, and approximately 3-6 times faster than NWFPE.
  750. It should be sufficient for most programs. It may be not suitable
  751. for scientific calculations, but you have to check this for yourself.
  752. If you do not feel you need a faster FP emulation you should better
  753. choose NWFPE.
  754. config VFP
  755. bool "VFP-format floating point maths"
  756. depends on CPU_V6 || CPU_ARM926T
  757. help
  758. Say Y to include VFP support code in the kernel. This is needed
  759. if your hardware includes a VFP unit.
  760. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  761. release notes and additional status information.
  762. Say N if your target does not have VFP hardware.
  763. endmenu
  764. menu "Userspace binary formats"
  765. source "fs/Kconfig.binfmt"
  766. config ARTHUR
  767. tristate "RISC OS personality"
  768. depends on !AEABI
  769. help
  770. Say Y here to include the kernel code necessary if you want to run
  771. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  772. experimental; if this sounds frightening, say N and sleep in peace.
  773. You can also say M here to compile this support as a module (which
  774. will be called arthur).
  775. endmenu
  776. menu "Power management options"
  777. source "kernel/power/Kconfig"
  778. endmenu
  779. source "net/Kconfig"
  780. menu "Device Drivers"
  781. source "drivers/base/Kconfig"
  782. source "drivers/connector/Kconfig"
  783. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  784. source "drivers/mtd/Kconfig"
  785. endif
  786. source "drivers/parport/Kconfig"
  787. source "drivers/pnp/Kconfig"
  788. source "drivers/block/Kconfig"
  789. if PCMCIA || ARCH_CLPS7500 || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX \
  790. || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
  791. || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
  792. || ARCH_IXP23XX
  793. source "drivers/ide/Kconfig"
  794. endif
  795. source "drivers/scsi/Kconfig"
  796. source "drivers/ata/Kconfig"
  797. source "drivers/md/Kconfig"
  798. source "drivers/message/fusion/Kconfig"
  799. source "drivers/ieee1394/Kconfig"
  800. source "drivers/message/i2o/Kconfig"
  801. source "drivers/net/Kconfig"
  802. source "drivers/isdn/Kconfig"
  803. # input before char - char/joystick depends on it. As does USB.
  804. source "drivers/input/Kconfig"
  805. source "drivers/char/Kconfig"
  806. source "drivers/i2c/Kconfig"
  807. source "drivers/spi/Kconfig"
  808. source "drivers/w1/Kconfig"
  809. source "drivers/hwmon/Kconfig"
  810. #source "drivers/l3/Kconfig"
  811. source "drivers/misc/Kconfig"
  812. source "drivers/mfd/Kconfig"
  813. source "drivers/leds/Kconfig"
  814. source "drivers/media/Kconfig"
  815. source "drivers/video/Kconfig"
  816. source "sound/Kconfig"
  817. source "drivers/hid/Kconfig"
  818. source "drivers/usb/Kconfig"
  819. source "drivers/mmc/Kconfig"
  820. source "drivers/rtc/Kconfig"
  821. source "drivers/dma/Kconfig"
  822. endmenu
  823. source "fs/Kconfig"
  824. source "arch/arm/oprofile/Kconfig"
  825. source "arch/arm/Kconfig.debug"
  826. source "security/Kconfig"
  827. source "crypto/Kconfig"
  828. source "lib/Kconfig"