Kconfig 26 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002
  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_TIME
  21. bool
  22. default n
  23. config MMU
  24. bool
  25. default y
  26. config NO_IOPORT
  27. bool
  28. default n
  29. config EISA
  30. bool
  31. ---help---
  32. The Extended Industry Standard Architecture (EISA) bus was
  33. developed as an open alternative to the IBM MicroChannel bus.
  34. The EISA bus provided some of the features of the IBM MicroChannel
  35. bus while maintaining backward compatibility with cards made for
  36. the older ISA bus. The EISA bus saw limited use between 1988 and
  37. 1995 when it was made obsolete by the PCI bus.
  38. Say Y here if you are building a kernel for an EISA-based machine.
  39. Otherwise, say N.
  40. config SBUS
  41. bool
  42. config MCA
  43. bool
  44. help
  45. MicroChannel Architecture is found in some IBM PS/2 machines and
  46. laptops. It is a bus system similar to PCI or ISA. See
  47. <file:Documentation/mca.txt> (and especially the web page given
  48. there) before attempting to build an MCA bus kernel.
  49. config GENERIC_HARDIRQS
  50. bool
  51. default y
  52. config TRACE_IRQFLAGS_SUPPORT
  53. bool
  54. default y
  55. config HARDIRQS_SW_RESEND
  56. bool
  57. default y
  58. config GENERIC_IRQ_PROBE
  59. bool
  60. default y
  61. config RWSEM_GENERIC_SPINLOCK
  62. bool
  63. default y
  64. config RWSEM_XCHGADD_ALGORITHM
  65. bool
  66. config ARCH_HAS_ILOG2_U32
  67. bool
  68. default n
  69. config ARCH_HAS_ILOG2_U64
  70. bool
  71. default n
  72. config GENERIC_HWEIGHT
  73. bool
  74. default y
  75. config GENERIC_CALIBRATE_DELAY
  76. bool
  77. default y
  78. config GENERIC_BUST_SPINLOCK
  79. bool
  80. config ARCH_MAY_HAVE_PC_FDC
  81. bool
  82. config ZONE_DMA
  83. bool
  84. default y
  85. config GENERIC_ISA_DMA
  86. bool
  87. config FIQ
  88. bool
  89. config ARCH_MTD_XIP
  90. bool
  91. config VECTORS_BASE
  92. hex
  93. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  94. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  95. default 0x00000000
  96. help
  97. The base address of exception vectors.
  98. source "init/Kconfig"
  99. menu "System Type"
  100. choice
  101. prompt "ARM system type"
  102. default ARCH_VERSATILE
  103. config ARCH_AAEC2000
  104. bool "Agilent AAEC-2000 based"
  105. select ARM_AMBA
  106. help
  107. This enables support for systems based on the Agilent AAEC-2000
  108. config ARCH_INTEGRATOR
  109. bool "ARM Ltd. Integrator family"
  110. select ARM_AMBA
  111. select ICST525
  112. help
  113. Support for ARM's Integrator platform.
  114. config ARCH_REALVIEW
  115. bool "ARM Ltd. RealView family"
  116. select ARM_AMBA
  117. select ICST307
  118. help
  119. This enables support for ARM Ltd RealView boards.
  120. config ARCH_VERSATILE
  121. bool "ARM Ltd. Versatile family"
  122. select ARM_AMBA
  123. select ARM_VIC
  124. select ICST307
  125. help
  126. This enables support for ARM Ltd Versatile board.
  127. config ARCH_AT91
  128. bool "Atmel AT91"
  129. help
  130. This enables support for systems based on the Atmel AT91RM9200
  131. and AT91SAM9xxx processors.
  132. config ARCH_CLPS7500
  133. bool "Cirrus CL-PS7500FE"
  134. select TIMER_ACORN
  135. select ISA
  136. select NO_IOPORT
  137. help
  138. Support for the Cirrus Logic PS7500FE system-on-a-chip.
  139. config ARCH_CLPS711X
  140. bool "Cirrus Logic CLPS711x/EP721x-based"
  141. help
  142. Support for Cirrus Logic 711x/721x based boards.
  143. config ARCH_CO285
  144. bool "Co-EBSA285"
  145. select FOOTBRIDGE
  146. select FOOTBRIDGE_ADDIN
  147. help
  148. Support for Intel's EBSA285 companion chip.
  149. config ARCH_EBSA110
  150. bool "EBSA-110"
  151. select ISA
  152. help
  153. This is an evaluation board for the StrongARM processor available
  154. from Digital. It has limited hardware on-board, including an
  155. Ethernet interface, two PCMCIA sockets, two serial ports and a
  156. parallel port.
  157. config ARCH_EP93XX
  158. bool "EP93xx-based"
  159. select ARM_AMBA
  160. select ARM_VIC
  161. help
  162. This enables support for the Cirrus EP93xx series of CPUs.
  163. config ARCH_FOOTBRIDGE
  164. bool "FootBridge"
  165. select FOOTBRIDGE
  166. help
  167. Support for systems based on the DC21285 companion chip
  168. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  169. config ARCH_NETX
  170. bool "Hilscher NetX based"
  171. select ARM_VIC
  172. help
  173. This enables support for systems based on the Hilscher NetX Soc
  174. config ARCH_H720X
  175. bool "Hynix HMS720x-based"
  176. select ISA_DMA_API
  177. help
  178. This enables support for systems based on the Hynix HMS720x
  179. config ARCH_IMX
  180. bool "IMX"
  181. help
  182. Support for Motorola's i.MX family of processors (MX1, MXL).
  183. config ARCH_IOP32X
  184. bool "IOP32x-based"
  185. depends on MMU
  186. select PLAT_IOP
  187. select PCI
  188. help
  189. Support for Intel's 80219 and IOP32X (XScale) family of
  190. processors.
  191. config ARCH_IOP33X
  192. bool "IOP33x-based"
  193. depends on MMU
  194. select PLAT_IOP
  195. select PCI
  196. help
  197. Support for Intel's IOP33X (XScale) family of processors.
  198. config ARCH_IOP13XX
  199. bool "IOP13xx-based"
  200. depends on MMU
  201. select PLAT_IOP
  202. select PCI
  203. help
  204. Support for Intel's IOP13XX (XScale) family of processors.
  205. config ARCH_IXP4XX
  206. bool "IXP4xx-based"
  207. depends on MMU
  208. select GENERIC_TIME
  209. help
  210. Support for Intel's IXP4XX (XScale) family of processors.
  211. config ARCH_IXP2000
  212. bool "IXP2400/2800-based"
  213. depends on MMU
  214. select PCI
  215. help
  216. Support for Intel's IXP2400/2800 (XScale) family of processors.
  217. config ARCH_IXP23XX
  218. bool "IXP23XX-based"
  219. depends on MMU
  220. select PCI
  221. help
  222. Support for Intel's IXP23xx (XScale) family of processors.
  223. config ARCH_L7200
  224. bool "LinkUp-L7200"
  225. select FIQ
  226. help
  227. Say Y here if you intend to run this kernel on a LinkUp Systems
  228. L7200 Software Development Board which uses an ARM720T processor.
  229. Information on this board can be obtained at:
  230. <http://www.linkupsys.com/>
  231. If you have any questions or comments about the Linux kernel port
  232. to this board, send e-mail to <sjhill@cotw.com>.
  233. config ARCH_NS9XXX
  234. bool "NetSilicon NS9xxx"
  235. help
  236. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  237. System.
  238. <http://www.digi.com/products/microprocessors/index.jsp>
  239. config ARCH_PNX4008
  240. bool "Philips Nexperia PNX4008 Mobile"
  241. help
  242. This enables support for Philips PNX4008 mobile platform.
  243. config ARCH_PXA
  244. bool "PXA2xx-based"
  245. depends on MMU
  246. select ARCH_MTD_XIP
  247. select GENERIC_TIME
  248. help
  249. Support for Intel's PXA2XX processor line.
  250. config ARCH_RPC
  251. bool "RiscPC"
  252. select ARCH_ACORN
  253. select FIQ
  254. select TIMER_ACORN
  255. select ARCH_MAY_HAVE_PC_FDC
  256. select ISA_DMA_API
  257. select NO_IOPORT
  258. help
  259. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  260. CD-ROM interface, serial and parallel port, and the floppy drive.
  261. config ARCH_SA1100
  262. bool "SA1100-based"
  263. select ISA
  264. select ARCH_DISCONTIGMEM_ENABLE
  265. select ARCH_MTD_XIP
  266. help
  267. Support for StrongARM 11x0 based boards.
  268. config ARCH_S3C2410
  269. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  270. help
  271. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  272. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  273. the Samsung SMDK2410 development board (and derivatives).
  274. config ARCH_SHARK
  275. bool "Shark"
  276. select ISA
  277. select ISA_DMA
  278. select PCI
  279. help
  280. Support for the StrongARM based Digital DNARD machine, also known
  281. as "Shark" (<http://www.shark-linux.de/shark.html>).
  282. config ARCH_LH7A40X
  283. bool "Sharp LH7A40X"
  284. help
  285. Say Y here for systems based on one of the Sharp LH7A40X
  286. System on a Chip processors. These CPUs include an ARM922T
  287. core with a wide array of integrated devices for
  288. hand-held and low-power applications.
  289. config ARCH_OMAP
  290. bool "TI OMAP"
  291. help
  292. Support for TI's OMAP platform (OMAP1 and OMAP2).
  293. endchoice
  294. source "arch/arm/mach-clps711x/Kconfig"
  295. source "arch/arm/mach-ep93xx/Kconfig"
  296. source "arch/arm/mach-footbridge/Kconfig"
  297. source "arch/arm/mach-integrator/Kconfig"
  298. source "arch/arm/mach-iop32x/Kconfig"
  299. source "arch/arm/mach-iop33x/Kconfig"
  300. source "arch/arm/mach-iop13xx/Kconfig"
  301. source "arch/arm/mach-ixp4xx/Kconfig"
  302. source "arch/arm/mach-ixp2000/Kconfig"
  303. source "arch/arm/mach-ixp23xx/Kconfig"
  304. source "arch/arm/mach-pxa/Kconfig"
  305. source "arch/arm/mach-sa1100/Kconfig"
  306. source "arch/arm/plat-omap/Kconfig"
  307. source "arch/arm/mach-omap1/Kconfig"
  308. source "arch/arm/mach-omap2/Kconfig"
  309. source "arch/arm/plat-s3c24xx/Kconfig"
  310. if ARCH_S3C2410
  311. source "arch/arm/mach-s3c2400/Kconfig"
  312. source "arch/arm/mach-s3c2410/Kconfig"
  313. source "arch/arm/mach-s3c2412/Kconfig"
  314. source "arch/arm/mach-s3c2440/Kconfig"
  315. source "arch/arm/mach-s3c2442/Kconfig"
  316. source "arch/arm/mach-s3c2443/Kconfig"
  317. endif
  318. source "arch/arm/mach-lh7a40x/Kconfig"
  319. source "arch/arm/mach-imx/Kconfig"
  320. source "arch/arm/mach-h720x/Kconfig"
  321. source "arch/arm/mach-versatile/Kconfig"
  322. source "arch/arm/mach-aaec2000/Kconfig"
  323. source "arch/arm/mach-realview/Kconfig"
  324. source "arch/arm/mach-at91/Kconfig"
  325. source "arch/arm/mach-netx/Kconfig"
  326. source "arch/arm/mach-ns9xxx/Kconfig"
  327. # Definitions to make life easier
  328. config ARCH_ACORN
  329. bool
  330. config PLAT_IOP
  331. bool
  332. source arch/arm/mm/Kconfig
  333. config IWMMXT
  334. bool "Enable iWMMXt support"
  335. depends on CPU_XSCALE || CPU_XSC3
  336. default y if PXA27x
  337. help
  338. Enable support for iWMMXt context switching at run time if
  339. running on a CPU that supports it.
  340. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  341. config XSCALE_PMU
  342. bool
  343. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  344. default y
  345. if !MMU
  346. source "arch/arm/Kconfig-nommu"
  347. endif
  348. endmenu
  349. source "arch/arm/common/Kconfig"
  350. config FORCE_MAX_ZONEORDER
  351. int
  352. depends on SA1111
  353. default "9"
  354. menu "Bus support"
  355. config ARM_AMBA
  356. bool
  357. config ISA
  358. bool
  359. help
  360. Find out whether you have ISA slots on your motherboard. ISA is the
  361. name of a bus system, i.e. the way the CPU talks to the other stuff
  362. inside your box. Other bus systems are PCI, EISA, MicroChannel
  363. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  364. newer boards don't support it. If you have ISA, say Y, otherwise N.
  365. # Select ISA DMA controller support
  366. config ISA_DMA
  367. bool
  368. select ISA_DMA_API
  369. # Select ISA DMA interface
  370. config ISA_DMA_API
  371. bool
  372. config PCI
  373. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX
  374. help
  375. Find out whether you have a PCI motherboard. PCI is the name of a
  376. bus system, i.e. the way the CPU talks to the other stuff inside
  377. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  378. VESA. If you have PCI, say Y, otherwise N.
  379. The PCI-HOWTO, available from
  380. <http://www.tldp.org/docs.html#howto>, contains valuable
  381. information about which PCI hardware does work under Linux and which
  382. doesn't.
  383. # Select the host bridge type
  384. config PCI_HOST_VIA82C505
  385. bool
  386. depends on PCI && ARCH_SHARK
  387. default y
  388. source "drivers/pci/Kconfig"
  389. source "drivers/pcmcia/Kconfig"
  390. endmenu
  391. menu "Kernel Features"
  392. config SMP
  393. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  394. depends on EXPERIMENTAL && REALVIEW_MPCORE
  395. help
  396. This enables support for systems with more than one CPU. If you have
  397. a system with only one CPU, like most personal computers, say N. If
  398. you have a system with more than one CPU, say Y.
  399. If you say N here, the kernel will run on single and multiprocessor
  400. machines, but will use only one CPU of a multiprocessor machine. If
  401. you say Y here, the kernel will run on many, but not all, single
  402. processor machines. On a single processor machine, the kernel will
  403. run faster if you say N here.
  404. See also the <file:Documentation/smp.txt>,
  405. <file:Documentation/i386/IO-APIC.txt>,
  406. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  407. <http://www.linuxdoc.org/docs.html#howto>.
  408. If you don't know what to do here, say N.
  409. config NR_CPUS
  410. int "Maximum number of CPUs (2-32)"
  411. range 2 32
  412. depends on SMP
  413. default "4"
  414. config HOTPLUG_CPU
  415. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  416. depends on SMP && HOTPLUG && EXPERIMENTAL
  417. help
  418. Say Y here to experiment with turning CPUs off and on. CPUs
  419. can be controlled through /sys/devices/system/cpu.
  420. config LOCAL_TIMERS
  421. bool "Use local timer interrupts"
  422. depends on SMP && REALVIEW_MPCORE
  423. default y
  424. help
  425. Enable support for local timers on SMP platforms, rather then the
  426. legacy IPI broadcast method. Local timers allows the system
  427. accounting to be spread across the timer interval, preventing a
  428. "thundering herd" at every timer tick.
  429. config PREEMPT
  430. bool "Preemptible Kernel (EXPERIMENTAL)"
  431. depends on EXPERIMENTAL
  432. help
  433. This option reduces the latency of the kernel when reacting to
  434. real-time or interactive events by allowing a low priority process to
  435. be preempted even if it is in kernel mode executing a system call.
  436. This allows applications to run more reliably even when the system is
  437. under load.
  438. Say Y here if you are building a kernel for a desktop, embedded
  439. or real-time system. Say N if you are unsure.
  440. config NO_IDLE_HZ
  441. bool "Dynamic tick timer"
  442. help
  443. Select this option if you want to disable continuous timer ticks
  444. and have them programmed to occur as required. This option saves
  445. power as the system can remain in idle state for longer.
  446. By default dynamic tick is disabled during the boot, and can be
  447. manually enabled with:
  448. echo 1 > /sys/devices/system/timer/timer0/dyn_tick
  449. Alternatively, if you want dynamic tick automatically enabled
  450. during boot, pass "dyntick=enable" via the kernel command string.
  451. Please note that dynamic tick may affect the accuracy of
  452. timekeeping on some platforms depending on the implementation.
  453. Currently at least OMAP, PXA2xx and SA11x0 platforms are known
  454. to have accurate timekeeping with dynamic tick.
  455. config HZ
  456. int
  457. default 128 if ARCH_L7200
  458. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  459. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  460. default 100
  461. config AEABI
  462. bool "Use the ARM EABI to compile the kernel"
  463. help
  464. This option allows for the kernel to be compiled using the latest
  465. ARM ABI (aka EABI). This is only useful if you are using a user
  466. space environment that is also compiled with EABI.
  467. Since there are major incompatibilities between the legacy ABI and
  468. EABI, especially with regard to structure member alignment, this
  469. option also changes the kernel syscall calling convention to
  470. disambiguate both ABIs and allow for backward compatibility support
  471. (selected with CONFIG_OABI_COMPAT).
  472. To use this you need GCC version 4.0.0 or later.
  473. config OABI_COMPAT
  474. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  475. depends on AEABI && EXPERIMENTAL
  476. default y
  477. help
  478. This option preserves the old syscall interface along with the
  479. new (ARM EABI) one. It also provides a compatibility layer to
  480. intercept syscalls that have structure arguments which layout
  481. in memory differs between the legacy ABI and the new ARM EABI
  482. (only for non "thumb" binaries). This option adds a tiny
  483. overhead to all syscalls and produces a slightly larger kernel.
  484. If you know you'll be using only pure EABI user space then you
  485. can say N here. If this option is not selected and you attempt
  486. to execute a legacy ABI binary then the result will be
  487. UNPREDICTABLE (in fact it can be predicted that it won't work
  488. at all). If in doubt say Y.
  489. config ARCH_DISCONTIGMEM_ENABLE
  490. bool
  491. default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
  492. help
  493. Say Y to support efficient handling of discontiguous physical memory,
  494. for architectures which are either NUMA (Non-Uniform Memory Access)
  495. or have huge holes in the physical address space for other reasons.
  496. See <file:Documentation/vm/numa> for more.
  497. config NODES_SHIFT
  498. int
  499. default "4" if ARCH_LH7A40X
  500. default "2"
  501. depends on NEED_MULTIPLE_NODES
  502. source "mm/Kconfig"
  503. config LEDS
  504. bool "Timer and CPU usage LEDs"
  505. depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
  506. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  507. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  508. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  509. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  510. ARCH_AT91 || MACH_TRIZEPS4
  511. help
  512. If you say Y here, the LEDs on your machine will be used
  513. to provide useful information about your current system status.
  514. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  515. be able to select which LEDs are active using the options below. If
  516. you are compiling a kernel for the EBSA-110 or the LART however, the
  517. red LED will simply flash regularly to indicate that the system is
  518. still functional. It is safe to say Y here if you have a CATS
  519. system, but the driver will do nothing.
  520. config LEDS_TIMER
  521. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  522. MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
  523. depends on LEDS
  524. default y if ARCH_EBSA110
  525. help
  526. If you say Y here, one of the system LEDs (the green one on the
  527. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  528. will flash regularly to indicate that the system is still
  529. operational. This is mainly useful to kernel hackers who are
  530. debugging unstable kernels.
  531. The LART uses the same LED for both Timer LED and CPU usage LED
  532. functions. You may choose to use both, but the Timer LED function
  533. will overrule the CPU usage LED.
  534. config LEDS_CPU
  535. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  536. !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
  537. depends on LEDS
  538. help
  539. If you say Y here, the red LED will be used to give a good real
  540. time indication of CPU usage, by lighting whenever the idle task
  541. is not currently executing.
  542. The LART uses the same LED for both Timer LED and CPU usage LED
  543. functions. You may choose to use both, but the Timer LED function
  544. will overrule the CPU usage LED.
  545. config ALIGNMENT_TRAP
  546. bool
  547. depends on CPU_CP15_MMU
  548. default y if !ARCH_EBSA110
  549. help
  550. ARM processors cannot fetch/store information which is not
  551. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  552. address divisible by 4. On 32-bit ARM processors, these non-aligned
  553. fetch/store instructions will be emulated in software if you say
  554. here, which has a severe performance impact. This is necessary for
  555. correct operation of some network protocols. With an IP-only
  556. configuration it is safe to say N, otherwise say Y.
  557. endmenu
  558. menu "Boot options"
  559. # Compressed boot loader in ROM. Yes, we really want to ask about
  560. # TEXT and BSS so we preserve their values in the config files.
  561. config ZBOOT_ROM_TEXT
  562. hex "Compressed ROM boot loader base address"
  563. default "0"
  564. help
  565. The physical address at which the ROM-able zImage is to be
  566. placed in the target. Platforms which normally make use of
  567. ROM-able zImage formats normally set this to a suitable
  568. value in their defconfig file.
  569. If ZBOOT_ROM is not enabled, this has no effect.
  570. config ZBOOT_ROM_BSS
  571. hex "Compressed ROM boot loader BSS address"
  572. default "0"
  573. help
  574. The base address of an area of read/write memory in the target
  575. for the ROM-able zImage which must be available while the
  576. decompressor is running. It must be large enough to hold the
  577. entire decompressed kernel plus an additional 128 KiB.
  578. Platforms which normally make use of ROM-able zImage formats
  579. normally set this to a suitable value in their defconfig file.
  580. If ZBOOT_ROM is not enabled, this has no effect.
  581. config ZBOOT_ROM
  582. bool "Compressed boot loader in ROM/flash"
  583. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  584. help
  585. Say Y here if you intend to execute your compressed kernel image
  586. (zImage) directly from ROM or flash. If unsure, say N.
  587. config CMDLINE
  588. string "Default kernel command string"
  589. default ""
  590. help
  591. On some architectures (EBSA110 and CATS), there is currently no way
  592. for the boot loader to pass arguments to the kernel. For these
  593. architectures, you should supply some command-line options at build
  594. time by entering them here. As a minimum, you should specify the
  595. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  596. config XIP_KERNEL
  597. bool "Kernel Execute-In-Place from ROM"
  598. depends on !ZBOOT_ROM
  599. help
  600. Execute-In-Place allows the kernel to run from non-volatile storage
  601. directly addressable by the CPU, such as NOR flash. This saves RAM
  602. space since the text section of the kernel is not loaded from flash
  603. to RAM. Read-write sections, such as the data section and stack,
  604. are still copied to RAM. The XIP kernel is not compressed since
  605. it has to run directly from flash, so it will take more space to
  606. store it. The flash address used to link the kernel object files,
  607. and for storing it, is configuration dependent. Therefore, if you
  608. say Y here, you must know the proper physical address where to
  609. store the kernel image depending on your own flash memory usage.
  610. Also note that the make target becomes "make xipImage" rather than
  611. "make zImage" or "make Image". The final kernel binary to put in
  612. ROM memory will be arch/arm/boot/xipImage.
  613. If unsure, say N.
  614. config XIP_PHYS_ADDR
  615. hex "XIP Kernel Physical Location"
  616. depends on XIP_KERNEL
  617. default "0x00080000"
  618. help
  619. This is the physical address in your flash memory the kernel will
  620. be linked for and stored to. This address is dependent on your
  621. own flash usage.
  622. config KEXEC
  623. bool "Kexec system call (EXPERIMENTAL)"
  624. depends on EXPERIMENTAL
  625. help
  626. kexec is a system call that implements the ability to shutdown your
  627. current kernel, and to start another kernel. It is like a reboot
  628. but it is indepedent of the system firmware. And like a reboot
  629. you can start any kernel with it, not just Linux.
  630. It is an ongoing process to be certain the hardware in a machine
  631. is properly shutdown, so do not be surprised if this code does not
  632. initially work for you. It may help to enable device hotplugging
  633. support.
  634. endmenu
  635. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX )
  636. menu "CPU Frequency scaling"
  637. source "drivers/cpufreq/Kconfig"
  638. config CPU_FREQ_SA1100
  639. bool
  640. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  641. default y
  642. config CPU_FREQ_SA1110
  643. bool
  644. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  645. default y
  646. config CPU_FREQ_INTEGRATOR
  647. tristate "CPUfreq driver for ARM Integrator CPUs"
  648. depends on ARCH_INTEGRATOR && CPU_FREQ
  649. default y
  650. help
  651. This enables the CPUfreq driver for ARM Integrator CPUs.
  652. For details, take a look at <file:Documentation/cpu-freq>.
  653. If in doubt, say Y.
  654. config CPU_FREQ_IMX
  655. tristate "CPUfreq driver for i.MX CPUs"
  656. depends on ARCH_IMX && CPU_FREQ
  657. default n
  658. help
  659. This enables the CPUfreq driver for i.MX CPUs.
  660. If in doubt, say N.
  661. endmenu
  662. endif
  663. menu "Floating point emulation"
  664. comment "At least one emulation must be selected"
  665. config FPE_NWFPE
  666. bool "NWFPE math emulation"
  667. depends on !AEABI || OABI_COMPAT
  668. ---help---
  669. Say Y to include the NWFPE floating point emulator in the kernel.
  670. This is necessary to run most binaries. Linux does not currently
  671. support floating point hardware so you need to say Y here even if
  672. your machine has an FPA or floating point co-processor podule.
  673. You may say N here if you are going to load the Acorn FPEmulator
  674. early in the bootup.
  675. config FPE_NWFPE_XP
  676. bool "Support extended precision"
  677. depends on FPE_NWFPE
  678. help
  679. Say Y to include 80-bit support in the kernel floating-point
  680. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  681. Note that gcc does not generate 80-bit operations by default,
  682. so in most cases this option only enlarges the size of the
  683. floating point emulator without any good reason.
  684. You almost surely want to say N here.
  685. config FPE_FASTFPE
  686. bool "FastFPE math emulation (EXPERIMENTAL)"
  687. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  688. ---help---
  689. Say Y here to include the FAST floating point emulator in the kernel.
  690. This is an experimental much faster emulator which now also has full
  691. precision for the mantissa. It does not support any exceptions.
  692. It is very simple, and approximately 3-6 times faster than NWFPE.
  693. It should be sufficient for most programs. It may be not suitable
  694. for scientific calculations, but you have to check this for yourself.
  695. If you do not feel you need a faster FP emulation you should better
  696. choose NWFPE.
  697. config VFP
  698. bool "VFP-format floating point maths"
  699. depends on CPU_V6 || CPU_ARM926T
  700. help
  701. Say Y to include VFP support code in the kernel. This is needed
  702. if your hardware includes a VFP unit.
  703. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  704. release notes and additional status information.
  705. Say N if your target does not have VFP hardware.
  706. endmenu
  707. menu "Userspace binary formats"
  708. source "fs/Kconfig.binfmt"
  709. config ARTHUR
  710. tristate "RISC OS personality"
  711. depends on !AEABI
  712. help
  713. Say Y here to include the kernel code necessary if you want to run
  714. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  715. experimental; if this sounds frightening, say N and sleep in peace.
  716. You can also say M here to compile this support as a module (which
  717. will be called arthur).
  718. endmenu
  719. menu "Power management options"
  720. source "kernel/power/Kconfig"
  721. endmenu
  722. source "net/Kconfig"
  723. menu "Device Drivers"
  724. source "drivers/base/Kconfig"
  725. source "drivers/connector/Kconfig"
  726. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  727. source "drivers/mtd/Kconfig"
  728. endif
  729. source "drivers/parport/Kconfig"
  730. source "drivers/pnp/Kconfig"
  731. source "drivers/block/Kconfig"
  732. source "drivers/acorn/block/Kconfig"
  733. if PCMCIA || ARCH_CLPS7500 || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX \
  734. || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
  735. || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
  736. || ARCH_IXP23XX
  737. source "drivers/ide/Kconfig"
  738. endif
  739. source "drivers/scsi/Kconfig"
  740. source "drivers/ata/Kconfig"
  741. source "drivers/md/Kconfig"
  742. source "drivers/message/fusion/Kconfig"
  743. source "drivers/ieee1394/Kconfig"
  744. source "drivers/message/i2o/Kconfig"
  745. source "drivers/net/Kconfig"
  746. source "drivers/isdn/Kconfig"
  747. # input before char - char/joystick depends on it. As does USB.
  748. source "drivers/input/Kconfig"
  749. source "drivers/char/Kconfig"
  750. source "drivers/i2c/Kconfig"
  751. source "drivers/spi/Kconfig"
  752. source "drivers/w1/Kconfig"
  753. source "drivers/hwmon/Kconfig"
  754. #source "drivers/l3/Kconfig"
  755. source "drivers/misc/Kconfig"
  756. source "drivers/mfd/Kconfig"
  757. source "drivers/leds/Kconfig"
  758. source "drivers/media/Kconfig"
  759. source "drivers/video/Kconfig"
  760. source "sound/Kconfig"
  761. source "drivers/hid/Kconfig"
  762. source "drivers/usb/Kconfig"
  763. source "drivers/mmc/Kconfig"
  764. source "drivers/rtc/Kconfig"
  765. endmenu
  766. source "fs/Kconfig"
  767. source "arch/arm/oprofile/Kconfig"
  768. source "arch/arm/Kconfig.debug"
  769. source "security/Kconfig"
  770. source "crypto/Kconfig"
  771. source "lib/Kconfig"