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. 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 GENERIC_CLOCKEVENTS_BROADCAST
  30. bool
  31. depends on GENERIC_CLOCKEVENTS
  32. default y if SMP && !LOCAL_TIMERS
  33. config MMU
  34. bool
  35. default y
  36. config NO_IOPORT
  37. bool
  38. default n
  39. config EISA
  40. bool
  41. ---help---
  42. The Extended Industry Standard Architecture (EISA) bus was
  43. developed as an open alternative to the IBM MicroChannel bus.
  44. The EISA bus provided some of the features of the IBM MicroChannel
  45. bus while maintaining backward compatibility with cards made for
  46. the older ISA bus. The EISA bus saw limited use between 1988 and
  47. 1995 when it was made obsolete by the PCI bus.
  48. Say Y here if you are building a kernel for an EISA-based machine.
  49. Otherwise, say N.
  50. config SBUS
  51. bool
  52. config MCA
  53. bool
  54. help
  55. MicroChannel Architecture is found in some IBM PS/2 machines and
  56. laptops. It is a bus system similar to PCI or ISA. See
  57. <file:Documentation/mca.txt> (and especially the web page given
  58. there) before attempting to build an MCA bus kernel.
  59. config GENERIC_HARDIRQS
  60. bool
  61. default y
  62. config STACKTRACE_SUPPORT
  63. bool
  64. default y
  65. config LOCKDEP_SUPPORT
  66. bool
  67. default y
  68. config TRACE_IRQFLAGS_SUPPORT
  69. bool
  70. default y
  71. config HARDIRQS_SW_RESEND
  72. bool
  73. default y
  74. config GENERIC_IRQ_PROBE
  75. bool
  76. default y
  77. config GENERIC_LOCKBREAK
  78. bool
  79. default y
  80. depends on SMP && PREEMPT
  81. config RWSEM_GENERIC_SPINLOCK
  82. bool
  83. default y
  84. config RWSEM_XCHGADD_ALGORITHM
  85. bool
  86. config ARCH_HAS_ILOG2_U32
  87. bool
  88. default n
  89. config ARCH_HAS_ILOG2_U64
  90. bool
  91. default n
  92. config GENERIC_HWEIGHT
  93. bool
  94. default y
  95. config GENERIC_CALIBRATE_DELAY
  96. bool
  97. default y
  98. config ARCH_MAY_HAVE_PC_FDC
  99. bool
  100. config ZONE_DMA
  101. bool
  102. default y
  103. config GENERIC_ISA_DMA
  104. bool
  105. config FIQ
  106. bool
  107. config ARCH_MTD_XIP
  108. bool
  109. config VECTORS_BASE
  110. hex
  111. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  112. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  113. default 0x00000000
  114. help
  115. The base address of exception vectors.
  116. source "init/Kconfig"
  117. menu "System Type"
  118. choice
  119. prompt "ARM system type"
  120. default ARCH_VERSATILE
  121. config ARCH_AAEC2000
  122. bool "Agilent AAEC-2000 based"
  123. select ARM_AMBA
  124. help
  125. This enables support for systems based on the Agilent AAEC-2000
  126. config ARCH_INTEGRATOR
  127. bool "ARM Ltd. Integrator family"
  128. select ARM_AMBA
  129. select ICST525
  130. help
  131. Support for ARM's Integrator platform.
  132. config ARCH_REALVIEW
  133. bool "ARM Ltd. RealView family"
  134. select ARM_AMBA
  135. select ICST307
  136. select GENERIC_TIME
  137. select GENERIC_CLOCKEVENTS
  138. help
  139. This enables support for ARM Ltd RealView boards.
  140. config ARCH_VERSATILE
  141. bool "ARM Ltd. Versatile family"
  142. select ARM_AMBA
  143. select ARM_VIC
  144. select ICST307
  145. select GENERIC_TIME
  146. select GENERIC_CLOCKEVENTS
  147. help
  148. This enables support for ARM Ltd Versatile board.
  149. config ARCH_AT91
  150. bool "Atmel AT91"
  151. select GENERIC_GPIO
  152. help
  153. This enables support for systems based on the Atmel AT91RM9200,
  154. AT91SAM9 and AT91CAP9 processors.
  155. config ARCH_CLPS7500
  156. bool "Cirrus CL-PS7500FE"
  157. select TIMER_ACORN
  158. select ISA
  159. select NO_IOPORT
  160. help
  161. Support for the Cirrus Logic PS7500FE system-on-a-chip.
  162. config ARCH_CLPS711X
  163. bool "Cirrus Logic CLPS711x/EP721x-based"
  164. help
  165. Support for Cirrus Logic 711x/721x based boards.
  166. config ARCH_CO285
  167. bool "Co-EBSA285"
  168. select FOOTBRIDGE
  169. select FOOTBRIDGE_ADDIN
  170. help
  171. Support for Intel's EBSA285 companion chip.
  172. config ARCH_EBSA110
  173. bool "EBSA-110"
  174. select ISA
  175. select NO_IOPORT
  176. help
  177. This is an evaluation board for the StrongARM processor available
  178. from Digital. It has limited hardware on-board, including an
  179. Ethernet interface, two PCMCIA sockets, two serial ports and a
  180. parallel port.
  181. config ARCH_EP93XX
  182. bool "EP93xx-based"
  183. select ARM_AMBA
  184. select ARM_VIC
  185. select GENERIC_GPIO
  186. help
  187. This enables support for the Cirrus EP93xx series of CPUs.
  188. config ARCH_FOOTBRIDGE
  189. bool "FootBridge"
  190. select FOOTBRIDGE
  191. help
  192. Support for systems based on the DC21285 companion chip
  193. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  194. config ARCH_NETX
  195. bool "Hilscher NetX based"
  196. select ARM_VIC
  197. help
  198. This enables support for systems based on the Hilscher NetX Soc
  199. config ARCH_H720X
  200. bool "Hynix HMS720x-based"
  201. select ISA_DMA_API
  202. help
  203. This enables support for systems based on the Hynix HMS720x
  204. config ARCH_IMX
  205. bool "IMX"
  206. select GENERIC_GPIO
  207. select GENERIC_TIME
  208. select GENERIC_CLOCKEVENTS
  209. help
  210. Support for Motorola's i.MX family of processors (MX1, MXL).
  211. config ARCH_IOP13XX
  212. bool "IOP13xx-based"
  213. depends on MMU
  214. select PLAT_IOP
  215. select PCI
  216. select ARCH_SUPPORTS_MSI
  217. help
  218. Support for Intel's IOP13XX (XScale) family of processors.
  219. config ARCH_IOP32X
  220. bool "IOP32x-based"
  221. depends on MMU
  222. select PLAT_IOP
  223. select PCI
  224. help
  225. Support for Intel's 80219 and IOP32X (XScale) family of
  226. processors.
  227. config ARCH_IOP33X
  228. bool "IOP33x-based"
  229. depends on MMU
  230. select PLAT_IOP
  231. select PCI
  232. help
  233. Support for Intel's IOP33X (XScale) family of processors.
  234. config ARCH_IXP23XX
  235. bool "IXP23XX-based"
  236. depends on MMU
  237. select PCI
  238. help
  239. Support for Intel's IXP23xx (XScale) family of processors.
  240. config ARCH_IXP2000
  241. bool "IXP2400/2800-based"
  242. depends on MMU
  243. select PCI
  244. help
  245. Support for Intel's IXP2400/2800 (XScale) family of processors.
  246. config ARCH_IXP4XX
  247. bool "IXP4xx-based"
  248. depends on MMU
  249. select GENERIC_GPIO
  250. select GENERIC_TIME
  251. select GENERIC_CLOCKEVENTS
  252. help
  253. Support for Intel's IXP4XX (XScale) family of processors.
  254. config ARCH_L7200
  255. bool "LinkUp-L7200"
  256. select FIQ
  257. help
  258. Say Y here if you intend to run this kernel on a LinkUp Systems
  259. L7200 Software Development Board which uses an ARM720T processor.
  260. Information on this board can be obtained at:
  261. <http://www.linkupsys.com/>
  262. If you have any questions or comments about the Linux kernel port
  263. to this board, send e-mail to <sjhill@cotw.com>.
  264. config ARCH_KS8695
  265. bool "Micrel/Kendin KS8695"
  266. select GENERIC_GPIO
  267. help
  268. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  269. System-on-Chip devices.
  270. config ARCH_NS9XXX
  271. bool "NetSilicon NS9xxx"
  272. select GENERIC_GPIO
  273. select GENERIC_TIME
  274. select GENERIC_CLOCKEVENTS
  275. help
  276. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  277. System.
  278. <http://www.digi.com/products/microprocessors/index.jsp>
  279. config ARCH_MXC
  280. bool "Freescale MXC/iMX-based"
  281. select ARCH_MTD_XIP
  282. help
  283. Support for Freescale MXC/iMX-based family of processors
  284. config ARCH_ORION
  285. bool "Marvell Orion"
  286. depends on MMU
  287. select PCI
  288. select GENERIC_GPIO
  289. select GENERIC_TIME
  290. select GENERIC_CLOCKEVENTS
  291. help
  292. Support for Marvell Orion System on Chip family.
  293. config ARCH_PNX4008
  294. bool "Philips Nexperia PNX4008 Mobile"
  295. help
  296. This enables support for Philips PNX4008 mobile platform.
  297. config ARCH_PXA
  298. bool "PXA2xx/PXA3xx-based"
  299. depends on MMU
  300. select ARCH_MTD_XIP
  301. select GENERIC_GPIO
  302. select GENERIC_TIME
  303. select GENERIC_CLOCKEVENTS
  304. select TICK_ONESHOT
  305. help
  306. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  307. config ARCH_RPC
  308. bool "RiscPC"
  309. select ARCH_ACORN
  310. select FIQ
  311. select TIMER_ACORN
  312. select ARCH_MAY_HAVE_PC_FDC
  313. select ISA_DMA_API
  314. select NO_IOPORT
  315. help
  316. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  317. CD-ROM interface, serial and parallel port, and the floppy drive.
  318. config ARCH_SA1100
  319. bool "SA1100-based"
  320. select ISA
  321. select ARCH_DISCONTIGMEM_ENABLE
  322. select ARCH_MTD_XIP
  323. select GENERIC_GPIO
  324. select GENERIC_TIME
  325. help
  326. Support for StrongARM 11x0 based boards.
  327. config ARCH_S3C2410
  328. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  329. select GENERIC_GPIO
  330. help
  331. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  332. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  333. the Samsung SMDK2410 development board (and derivatives).
  334. config ARCH_SHARK
  335. bool "Shark"
  336. select ISA
  337. select ISA_DMA
  338. select PCI
  339. help
  340. Support for the StrongARM based Digital DNARD machine, also known
  341. as "Shark" (<http://www.shark-linux.de/shark.html>).
  342. config ARCH_LH7A40X
  343. bool "Sharp LH7A40X"
  344. help
  345. Say Y here for systems based on one of the Sharp LH7A40X
  346. System on a Chip processors. These CPUs include an ARM922T
  347. core with a wide array of integrated devices for
  348. hand-held and low-power applications.
  349. config ARCH_DAVINCI
  350. bool "TI DaVinci"
  351. select GENERIC_TIME
  352. select GENERIC_CLOCKEVENTS
  353. select GENERIC_GPIO
  354. help
  355. Support for TI's DaVinci platform.
  356. config ARCH_OMAP
  357. bool "TI OMAP"
  358. select GENERIC_GPIO
  359. select GENERIC_TIME
  360. help
  361. Support for TI's OMAP platform (OMAP1 and OMAP2).
  362. config ARCH_MSM7X00A
  363. bool "Qualcomm MSM7X00A"
  364. select GENERIC_TIME
  365. select GENERIC_CLOCKEVENTS
  366. help
  367. Support for Qualcomm MSM7X00A based systems. This runs on the ARM11
  368. apps processor of the MSM7X00A and depends on a shared memory
  369. interface to the ARM9 modem processor which runs the baseband stack
  370. and controls some vital subsystems (clock and power control, etc).
  371. <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp>
  372. endchoice
  373. source "arch/arm/mach-clps711x/Kconfig"
  374. source "arch/arm/mach-ep93xx/Kconfig"
  375. source "arch/arm/mach-footbridge/Kconfig"
  376. source "arch/arm/mach-integrator/Kconfig"
  377. source "arch/arm/mach-iop32x/Kconfig"
  378. source "arch/arm/mach-iop33x/Kconfig"
  379. source "arch/arm/mach-iop13xx/Kconfig"
  380. source "arch/arm/mach-ixp4xx/Kconfig"
  381. source "arch/arm/mach-ixp2000/Kconfig"
  382. source "arch/arm/mach-ixp23xx/Kconfig"
  383. source "arch/arm/mach-pxa/Kconfig"
  384. source "arch/arm/mach-sa1100/Kconfig"
  385. source "arch/arm/plat-omap/Kconfig"
  386. source "arch/arm/mach-omap1/Kconfig"
  387. source "arch/arm/mach-omap2/Kconfig"
  388. source "arch/arm/mach-orion/Kconfig"
  389. source "arch/arm/plat-s3c24xx/Kconfig"
  390. source "arch/arm/plat-s3c/Kconfig"
  391. if ARCH_S3C2410
  392. source "arch/arm/mach-s3c2400/Kconfig"
  393. source "arch/arm/mach-s3c2410/Kconfig"
  394. source "arch/arm/mach-s3c2412/Kconfig"
  395. source "arch/arm/mach-s3c2440/Kconfig"
  396. source "arch/arm/mach-s3c2442/Kconfig"
  397. source "arch/arm/mach-s3c2443/Kconfig"
  398. endif
  399. source "arch/arm/mach-lh7a40x/Kconfig"
  400. source "arch/arm/mach-imx/Kconfig"
  401. source "arch/arm/mach-h720x/Kconfig"
  402. source "arch/arm/mach-versatile/Kconfig"
  403. source "arch/arm/mach-aaec2000/Kconfig"
  404. source "arch/arm/mach-realview/Kconfig"
  405. source "arch/arm/mach-at91/Kconfig"
  406. source "arch/arm/plat-mxc/Kconfig"
  407. source "arch/arm/mach-netx/Kconfig"
  408. source "arch/arm/mach-ns9xxx/Kconfig"
  409. source "arch/arm/mach-davinci/Kconfig"
  410. source "arch/arm/mach-ks8695/Kconfig"
  411. source "arch/arm/mach-msm/Kconfig"
  412. # Definitions to make life easier
  413. config ARCH_ACORN
  414. bool
  415. config PLAT_IOP
  416. bool
  417. source arch/arm/mm/Kconfig
  418. config IWMMXT
  419. bool "Enable iWMMXt support"
  420. depends on CPU_XSCALE || CPU_XSC3
  421. default y if PXA27x || PXA3xx
  422. help
  423. Enable support for iWMMXt context switching at run time if
  424. running on a CPU that supports it.
  425. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  426. config XSCALE_PMU
  427. bool
  428. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  429. default y
  430. if !MMU
  431. source "arch/arm/Kconfig-nommu"
  432. endif
  433. endmenu
  434. source "arch/arm/common/Kconfig"
  435. config FORCE_MAX_ZONEORDER
  436. int
  437. depends on SA1111
  438. default "9"
  439. menu "Bus support"
  440. config ARM_AMBA
  441. bool
  442. config ISA
  443. bool
  444. help
  445. Find out whether you have ISA slots on your motherboard. ISA is the
  446. name of a bus system, i.e. the way the CPU talks to the other stuff
  447. inside your box. Other bus systems are PCI, EISA, MicroChannel
  448. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  449. newer boards don't support it. If you have ISA, say Y, otherwise N.
  450. # Select ISA DMA controller support
  451. config ISA_DMA
  452. bool
  453. select ISA_DMA_API
  454. # Select ISA DMA interface
  455. config ISA_DMA_API
  456. bool
  457. config PCI
  458. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  459. help
  460. Find out whether you have a PCI motherboard. PCI is the name of a
  461. bus system, i.e. the way the CPU talks to the other stuff inside
  462. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  463. VESA. If you have PCI, say Y, otherwise N.
  464. config PCI_SYSCALL
  465. def_bool PCI
  466. # Select the host bridge type
  467. config PCI_HOST_VIA82C505
  468. bool
  469. depends on PCI && ARCH_SHARK
  470. default y
  471. config PCI_HOST_ITE8152
  472. bool
  473. depends on PCI && MACH_ARMCORE
  474. default y
  475. select DMABOUNCE
  476. source "drivers/pci/Kconfig"
  477. source "drivers/pcmcia/Kconfig"
  478. endmenu
  479. menu "Kernel Features"
  480. source "kernel/time/Kconfig"
  481. config SMP
  482. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  483. depends on EXPERIMENTAL && REALVIEW_EB_ARM11MP
  484. help
  485. This enables support for systems with more than one CPU. If you have
  486. a system with only one CPU, like most personal computers, say N. If
  487. you have a system with more than one CPU, say Y.
  488. If you say N here, the kernel will run on single and multiprocessor
  489. machines, but will use only one CPU of a multiprocessor machine. If
  490. you say Y here, the kernel will run on many, but not all, single
  491. processor machines. On a single processor machine, the kernel will
  492. run faster if you say N here.
  493. See also the <file:Documentation/smp.txt>,
  494. <file:Documentation/i386/IO-APIC.txt>,
  495. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  496. <http://www.linuxdoc.org/docs.html#howto>.
  497. If you don't know what to do here, say N.
  498. config NR_CPUS
  499. int "Maximum number of CPUs (2-32)"
  500. range 2 32
  501. depends on SMP
  502. default "4"
  503. config HOTPLUG_CPU
  504. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  505. depends on SMP && HOTPLUG && EXPERIMENTAL
  506. help
  507. Say Y here to experiment with turning CPUs off and on. CPUs
  508. can be controlled through /sys/devices/system/cpu.
  509. config LOCAL_TIMERS
  510. bool "Use local timer interrupts"
  511. depends on SMP && REALVIEW_EB_ARM11MP
  512. default y
  513. help
  514. Enable support for local timers on SMP platforms, rather then the
  515. legacy IPI broadcast method. Local timers allows the system
  516. accounting to be spread across the timer interval, preventing a
  517. "thundering herd" at every timer tick.
  518. config PREEMPT
  519. bool "Preemptible Kernel (EXPERIMENTAL)"
  520. depends on EXPERIMENTAL
  521. help
  522. This option reduces the latency of the kernel when reacting to
  523. real-time or interactive events by allowing a low priority process to
  524. be preempted even if it is in kernel mode executing a system call.
  525. This allows applications to run more reliably even when the system is
  526. under load.
  527. Say Y here if you are building a kernel for a desktop, embedded
  528. or real-time system. Say N if you are unsure.
  529. config NO_IDLE_HZ
  530. bool "Dynamic tick timer"
  531. depends on !GENERIC_CLOCKEVENTS
  532. help
  533. Select this option if you want to disable continuous timer ticks
  534. and have them programmed to occur as required. This option saves
  535. power as the system can remain in idle state for longer.
  536. By default dynamic tick is disabled during the boot, and can be
  537. manually enabled with:
  538. echo 1 > /sys/devices/system/timer/timer0/dyn_tick
  539. Alternatively, if you want dynamic tick automatically enabled
  540. during boot, pass "dyntick=enable" via the kernel command string.
  541. Please note that dynamic tick may affect the accuracy of
  542. timekeeping on some platforms depending on the implementation.
  543. Currently at least OMAP, PXA2xx and SA11x0 platforms are known
  544. to have accurate timekeeping with dynamic tick.
  545. config HZ
  546. int
  547. default 128 if ARCH_L7200
  548. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  549. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  550. default AT91_TIMER_HZ if ARCH_AT91
  551. default 100
  552. config AEABI
  553. bool "Use the ARM EABI to compile the kernel"
  554. help
  555. This option allows for the kernel to be compiled using the latest
  556. ARM ABI (aka EABI). This is only useful if you are using a user
  557. space environment that is also compiled with EABI.
  558. Since there are major incompatibilities between the legacy ABI and
  559. EABI, especially with regard to structure member alignment, this
  560. option also changes the kernel syscall calling convention to
  561. disambiguate both ABIs and allow for backward compatibility support
  562. (selected with CONFIG_OABI_COMPAT).
  563. To use this you need GCC version 4.0.0 or later.
  564. config OABI_COMPAT
  565. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  566. depends on AEABI && EXPERIMENTAL
  567. default y
  568. help
  569. This option preserves the old syscall interface along with the
  570. new (ARM EABI) one. It also provides a compatibility layer to
  571. intercept syscalls that have structure arguments which layout
  572. in memory differs between the legacy ABI and the new ARM EABI
  573. (only for non "thumb" binaries). This option adds a tiny
  574. overhead to all syscalls and produces a slightly larger kernel.
  575. If you know you'll be using only pure EABI user space then you
  576. can say N here. If this option is not selected and you attempt
  577. to execute a legacy ABI binary then the result will be
  578. UNPREDICTABLE (in fact it can be predicted that it won't work
  579. at all). If in doubt say Y.
  580. config ARCH_DISCONTIGMEM_ENABLE
  581. bool
  582. default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
  583. help
  584. Say Y to support efficient handling of discontiguous physical memory,
  585. for architectures which are either NUMA (Non-Uniform Memory Access)
  586. or have huge holes in the physical address space for other reasons.
  587. See <file:Documentation/vm/numa> for more.
  588. config NODES_SHIFT
  589. int
  590. default "4" if ARCH_LH7A40X
  591. default "2"
  592. depends on NEED_MULTIPLE_NODES
  593. source "mm/Kconfig"
  594. config LEDS
  595. bool "Timer and CPU usage LEDs"
  596. depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
  597. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  598. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  599. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  600. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  601. ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
  602. ARCH_KS8695 || MACH_RD88F5182
  603. help
  604. If you say Y here, the LEDs on your machine will be used
  605. to provide useful information about your current system status.
  606. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  607. be able to select which LEDs are active using the options below. If
  608. you are compiling a kernel for the EBSA-110 or the LART however, the
  609. red LED will simply flash regularly to indicate that the system is
  610. still functional. It is safe to say Y here if you have a CATS
  611. system, but the driver will do nothing.
  612. config LEDS_TIMER
  613. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  614. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  615. || MACH_OMAP_PERSEUS2
  616. depends on LEDS
  617. depends on !GENERIC_CLOCKEVENTS
  618. default y if ARCH_EBSA110
  619. help
  620. If you say Y here, one of the system LEDs (the green one on the
  621. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  622. will flash regularly to indicate that the system is still
  623. operational. This is mainly useful to kernel hackers who are
  624. debugging unstable kernels.
  625. The LART uses the same LED for both Timer LED and CPU usage LED
  626. functions. You may choose to use both, but the Timer LED function
  627. will overrule the CPU usage LED.
  628. config LEDS_CPU
  629. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  630. !ARCH_OMAP) \
  631. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  632. || MACH_OMAP_PERSEUS2
  633. depends on LEDS
  634. help
  635. If you say Y here, the red LED will be used to give a good real
  636. time indication of CPU usage, by lighting whenever the idle task
  637. is not currently executing.
  638. The LART uses the same LED for both Timer LED and CPU usage LED
  639. functions. You may choose to use both, but the Timer LED function
  640. will overrule the CPU usage LED.
  641. config ALIGNMENT_TRAP
  642. bool
  643. depends on CPU_CP15_MMU
  644. default y if !ARCH_EBSA110
  645. help
  646. ARM processors cannot fetch/store information which is not
  647. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  648. address divisible by 4. On 32-bit ARM processors, these non-aligned
  649. fetch/store instructions will be emulated in software if you say
  650. here, which has a severe performance impact. This is necessary for
  651. correct operation of some network protocols. With an IP-only
  652. configuration it is safe to say N, otherwise say Y.
  653. endmenu
  654. menu "Boot options"
  655. # Compressed boot loader in ROM. Yes, we really want to ask about
  656. # TEXT and BSS so we preserve their values in the config files.
  657. config ZBOOT_ROM_TEXT
  658. hex "Compressed ROM boot loader base address"
  659. default "0"
  660. help
  661. The physical address at which the ROM-able zImage is to be
  662. placed in the target. Platforms which normally make use of
  663. ROM-able zImage formats normally set this to a suitable
  664. value in their defconfig file.
  665. If ZBOOT_ROM is not enabled, this has no effect.
  666. config ZBOOT_ROM_BSS
  667. hex "Compressed ROM boot loader BSS address"
  668. default "0"
  669. help
  670. The base address of an area of read/write memory in the target
  671. for the ROM-able zImage which must be available while the
  672. decompressor is running. It must be large enough to hold the
  673. entire decompressed kernel plus an additional 128 KiB.
  674. Platforms which normally make use of ROM-able zImage formats
  675. normally set this to a suitable value in their defconfig file.
  676. If ZBOOT_ROM is not enabled, this has no effect.
  677. config ZBOOT_ROM
  678. bool "Compressed boot loader in ROM/flash"
  679. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  680. help
  681. Say Y here if you intend to execute your compressed kernel image
  682. (zImage) directly from ROM or flash. If unsure, say N.
  683. config CMDLINE
  684. string "Default kernel command string"
  685. default ""
  686. help
  687. On some architectures (EBSA110 and CATS), there is currently no way
  688. for the boot loader to pass arguments to the kernel. For these
  689. architectures, you should supply some command-line options at build
  690. time by entering them here. As a minimum, you should specify the
  691. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  692. config XIP_KERNEL
  693. bool "Kernel Execute-In-Place from ROM"
  694. depends on !ZBOOT_ROM
  695. help
  696. Execute-In-Place allows the kernel to run from non-volatile storage
  697. directly addressable by the CPU, such as NOR flash. This saves RAM
  698. space since the text section of the kernel is not loaded from flash
  699. to RAM. Read-write sections, such as the data section and stack,
  700. are still copied to RAM. The XIP kernel is not compressed since
  701. it has to run directly from flash, so it will take more space to
  702. store it. The flash address used to link the kernel object files,
  703. and for storing it, is configuration dependent. Therefore, if you
  704. say Y here, you must know the proper physical address where to
  705. store the kernel image depending on your own flash memory usage.
  706. Also note that the make target becomes "make xipImage" rather than
  707. "make zImage" or "make Image". The final kernel binary to put in
  708. ROM memory will be arch/arm/boot/xipImage.
  709. If unsure, say N.
  710. config XIP_PHYS_ADDR
  711. hex "XIP Kernel Physical Location"
  712. depends on XIP_KERNEL
  713. default "0x00080000"
  714. help
  715. This is the physical address in your flash memory the kernel will
  716. be linked for and stored to. This address is dependent on your
  717. own flash usage.
  718. config KEXEC
  719. bool "Kexec system call (EXPERIMENTAL)"
  720. depends on EXPERIMENTAL
  721. help
  722. kexec is a system call that implements the ability to shutdown your
  723. current kernel, and to start another kernel. It is like a reboot
  724. but it is independent of the system firmware. And like a reboot
  725. you can start any kernel with it, not just Linux.
  726. It is an ongoing process to be certain the hardware in a machine
  727. is properly shutdown, so do not be surprised if this code does not
  728. initially work for you. It may help to enable device hotplugging
  729. support.
  730. endmenu
  731. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
  732. menu "CPU Frequency scaling"
  733. source "drivers/cpufreq/Kconfig"
  734. config CPU_FREQ_SA1100
  735. bool
  736. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  737. default y
  738. config CPU_FREQ_SA1110
  739. bool
  740. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  741. default y
  742. config CPU_FREQ_INTEGRATOR
  743. tristate "CPUfreq driver for ARM Integrator CPUs"
  744. depends on ARCH_INTEGRATOR && CPU_FREQ
  745. default y
  746. help
  747. This enables the CPUfreq driver for ARM Integrator CPUs.
  748. For details, take a look at <file:Documentation/cpu-freq>.
  749. If in doubt, say Y.
  750. config CPU_FREQ_IMX
  751. tristate "CPUfreq driver for i.MX CPUs"
  752. depends on ARCH_IMX && CPU_FREQ
  753. default n
  754. help
  755. This enables the CPUfreq driver for i.MX CPUs.
  756. If in doubt, say N.
  757. config CPU_FREQ_PXA
  758. bool
  759. depends on CPU_FREQ && ARCH_PXA && PXA25x
  760. default y
  761. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  762. endmenu
  763. endif
  764. menu "Floating point emulation"
  765. comment "At least one emulation must be selected"
  766. config FPE_NWFPE
  767. bool "NWFPE math emulation"
  768. depends on !AEABI || OABI_COMPAT
  769. ---help---
  770. Say Y to include the NWFPE floating point emulator in the kernel.
  771. This is necessary to run most binaries. Linux does not currently
  772. support floating point hardware so you need to say Y here even if
  773. your machine has an FPA or floating point co-processor podule.
  774. You may say N here if you are going to load the Acorn FPEmulator
  775. early in the bootup.
  776. config FPE_NWFPE_XP
  777. bool "Support extended precision"
  778. depends on FPE_NWFPE
  779. help
  780. Say Y to include 80-bit support in the kernel floating-point
  781. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  782. Note that gcc does not generate 80-bit operations by default,
  783. so in most cases this option only enlarges the size of the
  784. floating point emulator without any good reason.
  785. You almost surely want to say N here.
  786. config FPE_FASTFPE
  787. bool "FastFPE math emulation (EXPERIMENTAL)"
  788. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  789. ---help---
  790. Say Y here to include the FAST floating point emulator in the kernel.
  791. This is an experimental much faster emulator which now also has full
  792. precision for the mantissa. It does not support any exceptions.
  793. It is very simple, and approximately 3-6 times faster than NWFPE.
  794. It should be sufficient for most programs. It may be not suitable
  795. for scientific calculations, but you have to check this for yourself.
  796. If you do not feel you need a faster FP emulation you should better
  797. choose NWFPE.
  798. config VFP
  799. bool "VFP-format floating point maths"
  800. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  801. help
  802. Say Y to include VFP support code in the kernel. This is needed
  803. if your hardware includes a VFP unit.
  804. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  805. release notes and additional status information.
  806. Say N if your target does not have VFP hardware.
  807. config VFPv3
  808. bool
  809. depends on VFP
  810. default y if CPU_V7
  811. config NEON
  812. bool "Advanced SIMD (NEON) Extension support"
  813. depends on VFPv3 && CPU_V7
  814. help
  815. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  816. Extension.
  817. endmenu
  818. menu "Userspace binary formats"
  819. source "fs/Kconfig.binfmt"
  820. config ARTHUR
  821. tristate "RISC OS personality"
  822. depends on !AEABI
  823. help
  824. Say Y here to include the kernel code necessary if you want to run
  825. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  826. experimental; if this sounds frightening, say N and sleep in peace.
  827. You can also say M here to compile this support as a module (which
  828. will be called arthur).
  829. endmenu
  830. menu "Power management options"
  831. source "kernel/power/Kconfig"
  832. config ARCH_SUSPEND_POSSIBLE
  833. def_bool y
  834. endmenu
  835. source "net/Kconfig"
  836. menu "Device Drivers"
  837. source "drivers/base/Kconfig"
  838. source "drivers/connector/Kconfig"
  839. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  840. source "drivers/mtd/Kconfig"
  841. endif
  842. source "drivers/parport/Kconfig"
  843. source "drivers/pnp/Kconfig"
  844. source "drivers/block/Kconfig"
  845. # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
  846. source "drivers/misc/Kconfig"
  847. if PCMCIA || ARCH_CLPS7500 || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX \
  848. || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
  849. || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
  850. || ARCH_IXP23XX
  851. source "drivers/ide/Kconfig"
  852. endif
  853. source "drivers/scsi/Kconfig"
  854. source "drivers/ata/Kconfig"
  855. source "drivers/md/Kconfig"
  856. source "drivers/message/fusion/Kconfig"
  857. source "drivers/ieee1394/Kconfig"
  858. source "drivers/message/i2o/Kconfig"
  859. source "drivers/net/Kconfig"
  860. source "drivers/isdn/Kconfig"
  861. # input before char - char/joystick depends on it. As does USB.
  862. source "drivers/input/Kconfig"
  863. source "drivers/char/Kconfig"
  864. source "drivers/i2c/Kconfig"
  865. source "drivers/spi/Kconfig"
  866. source "drivers/w1/Kconfig"
  867. source "drivers/power/Kconfig"
  868. source "drivers/hwmon/Kconfig"
  869. source "drivers/watchdog/Kconfig"
  870. source "drivers/ssb/Kconfig"
  871. #source "drivers/l3/Kconfig"
  872. source "drivers/mfd/Kconfig"
  873. source "drivers/media/Kconfig"
  874. source "drivers/video/Kconfig"
  875. source "sound/Kconfig"
  876. source "drivers/hid/Kconfig"
  877. source "drivers/usb/Kconfig"
  878. source "drivers/mmc/Kconfig"
  879. source "drivers/leds/Kconfig"
  880. source "drivers/rtc/Kconfig"
  881. source "drivers/dma/Kconfig"
  882. source "drivers/dca/Kconfig"
  883. endmenu
  884. source "fs/Kconfig"
  885. source "arch/arm/Kconfig.instrumentation"
  886. source "arch/arm/Kconfig.debug"
  887. source "security/Kconfig"
  888. source "crypto/Kconfig"
  889. source "lib/Kconfig"