Kconfig 29 KB

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