Kconfig 30 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 HAVE_IDE
  10. select RTC_LIB
  11. select SYS_SUPPORTS_APM_EMULATION
  12. select HAVE_OPROFILE
  13. select HAVE_KPROBES if (!XIP_KERNEL)
  14. select HAVE_KRETPROBES if (HAVE_KPROBES)
  15. help
  16. The ARM series is a line of low-power-consumption RISC chip designs
  17. licensed by ARM Ltd and targeted at embedded applications and
  18. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  19. manufactured, but legacy ARM-based PC hardware remains popular in
  20. Europe. There is an ARM Linux project with a web page at
  21. <http://www.arm.linux.org.uk/>.
  22. config SYS_SUPPORTS_APM_EMULATION
  23. bool
  24. config GENERIC_GPIO
  25. bool
  26. default n
  27. config GENERIC_TIME
  28. bool
  29. default n
  30. config GENERIC_CLOCKEVENTS
  31. bool
  32. default n
  33. config GENERIC_CLOCKEVENTS_BROADCAST
  34. bool
  35. depends on GENERIC_CLOCKEVENTS
  36. default y if SMP && !LOCAL_TIMERS
  37. config MMU
  38. bool
  39. default y
  40. config NO_IOPORT
  41. bool
  42. default n
  43. config EISA
  44. bool
  45. ---help---
  46. The Extended Industry Standard Architecture (EISA) bus was
  47. developed as an open alternative to the IBM MicroChannel bus.
  48. The EISA bus provided some of the features of the IBM MicroChannel
  49. bus while maintaining backward compatibility with cards made for
  50. the older ISA bus. The EISA bus saw limited use between 1988 and
  51. 1995 when it was made obsolete by the PCI bus.
  52. Say Y here if you are building a kernel for an EISA-based machine.
  53. Otherwise, say N.
  54. config SBUS
  55. bool
  56. config MCA
  57. bool
  58. help
  59. MicroChannel Architecture is found in some IBM PS/2 machines and
  60. laptops. It is a bus system similar to PCI or ISA. See
  61. <file:Documentation/mca.txt> (and especially the web page given
  62. there) before attempting to build an MCA bus kernel.
  63. config GENERIC_HARDIRQS
  64. bool
  65. default y
  66. config STACKTRACE_SUPPORT
  67. bool
  68. default y
  69. config HAVE_LATENCYTOP_SUPPORT
  70. bool
  71. depends on !SMP
  72. default y
  73. config LOCKDEP_SUPPORT
  74. bool
  75. default y
  76. config TRACE_IRQFLAGS_SUPPORT
  77. bool
  78. default y
  79. config HARDIRQS_SW_RESEND
  80. bool
  81. default y
  82. config GENERIC_IRQ_PROBE
  83. bool
  84. default y
  85. config GENERIC_LOCKBREAK
  86. bool
  87. default y
  88. depends on SMP && PREEMPT
  89. config RWSEM_GENERIC_SPINLOCK
  90. bool
  91. default y
  92. config RWSEM_XCHGADD_ALGORITHM
  93. bool
  94. config ARCH_HAS_ILOG2_U32
  95. bool
  96. default n
  97. config ARCH_HAS_ILOG2_U64
  98. bool
  99. default n
  100. config GENERIC_HWEIGHT
  101. bool
  102. default y
  103. config GENERIC_CALIBRATE_DELAY
  104. bool
  105. default y
  106. config ARCH_SUPPORTS_AOUT
  107. def_bool y
  108. config ARCH_MAY_HAVE_PC_FDC
  109. bool
  110. config ZONE_DMA
  111. bool
  112. default y
  113. config GENERIC_ISA_DMA
  114. bool
  115. config FIQ
  116. bool
  117. config ARCH_MTD_XIP
  118. bool
  119. config GENERIC_HARDIRQS_NO__DO_IRQ
  120. bool
  121. def_bool y
  122. if OPROFILE
  123. config OPROFILE_ARMV6
  124. def_bool y
  125. depends on CPU_V6 && !SMP
  126. select OPROFILE_ARM11_CORE
  127. config OPROFILE_MPCORE
  128. def_bool y
  129. depends on CPU_V6 && SMP
  130. select OPROFILE_ARM11_CORE
  131. config OPROFILE_ARM11_CORE
  132. bool
  133. endif
  134. config VECTORS_BASE
  135. hex
  136. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  137. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  138. default 0x00000000
  139. help
  140. The base address of exception vectors.
  141. source "init/Kconfig"
  142. menu "System Type"
  143. choice
  144. prompt "ARM system type"
  145. default ARCH_VERSATILE
  146. config ARCH_AAEC2000
  147. bool "Agilent AAEC-2000 based"
  148. select ARM_AMBA
  149. help
  150. This enables support for systems based on the Agilent AAEC-2000
  151. config ARCH_INTEGRATOR
  152. bool "ARM Ltd. Integrator family"
  153. select ARM_AMBA
  154. select ICST525
  155. help
  156. Support for ARM's Integrator platform.
  157. config ARCH_REALVIEW
  158. bool "ARM Ltd. RealView family"
  159. select ARM_AMBA
  160. select ICST307
  161. select GENERIC_TIME
  162. select GENERIC_CLOCKEVENTS
  163. help
  164. This enables support for ARM Ltd RealView boards.
  165. config ARCH_VERSATILE
  166. bool "ARM Ltd. Versatile family"
  167. select ARM_AMBA
  168. select ARM_VIC
  169. select ICST307
  170. select GENERIC_TIME
  171. select GENERIC_CLOCKEVENTS
  172. help
  173. This enables support for ARM Ltd Versatile board.
  174. config ARCH_AT91
  175. bool "Atmel AT91"
  176. select GENERIC_GPIO
  177. help
  178. This enables support for systems based on the Atmel AT91RM9200,
  179. AT91SAM9 and AT91CAP9 processors.
  180. config ARCH_CLPS7500
  181. bool "Cirrus CL-PS7500FE"
  182. select TIMER_ACORN
  183. select ISA
  184. select NO_IOPORT
  185. help
  186. Support for the Cirrus Logic PS7500FE system-on-a-chip.
  187. config ARCH_CLPS711X
  188. bool "Cirrus Logic CLPS711x/EP721x-based"
  189. help
  190. Support for Cirrus Logic 711x/721x based boards.
  191. config ARCH_EBSA110
  192. bool "EBSA-110"
  193. select ISA
  194. select NO_IOPORT
  195. help
  196. This is an evaluation board for the StrongARM processor available
  197. from Digital. It has limited hardware on-board, including an
  198. Ethernet interface, two PCMCIA sockets, two serial ports and a
  199. parallel port.
  200. config ARCH_EP93XX
  201. bool "EP93xx-based"
  202. select ARM_AMBA
  203. select ARM_VIC
  204. select GENERIC_GPIO
  205. select HAVE_GPIO_LIB
  206. help
  207. This enables support for the Cirrus EP93xx series of CPUs.
  208. config ARCH_FOOTBRIDGE
  209. bool "FootBridge"
  210. select FOOTBRIDGE
  211. help
  212. Support for systems based on the DC21285 companion chip
  213. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  214. config ARCH_NETX
  215. bool "Hilscher NetX based"
  216. select ARM_VIC
  217. help
  218. This enables support for systems based on the Hilscher NetX Soc
  219. config ARCH_H720X
  220. bool "Hynix HMS720x-based"
  221. select ISA_DMA_API
  222. help
  223. This enables support for systems based on the Hynix HMS720x
  224. config ARCH_IMX
  225. bool "IMX"
  226. select GENERIC_GPIO
  227. select GENERIC_TIME
  228. select GENERIC_CLOCKEVENTS
  229. help
  230. Support for Motorola's i.MX family of processors (MX1, MXL).
  231. config ARCH_IOP13XX
  232. bool "IOP13xx-based"
  233. depends on MMU
  234. select PLAT_IOP
  235. select PCI
  236. select ARCH_SUPPORTS_MSI
  237. help
  238. Support for Intel's IOP13XX (XScale) family of processors.
  239. config ARCH_IOP32X
  240. bool "IOP32x-based"
  241. depends on MMU
  242. select PLAT_IOP
  243. select PCI
  244. select GENERIC_GPIO
  245. select HAVE_GPIO_LIB
  246. help
  247. Support for Intel's 80219 and IOP32X (XScale) family of
  248. processors.
  249. config ARCH_IOP33X
  250. bool "IOP33x-based"
  251. depends on MMU
  252. select PLAT_IOP
  253. select PCI
  254. select GENERIC_GPIO
  255. select HAVE_GPIO_LIB
  256. help
  257. Support for Intel's IOP33X (XScale) family of processors.
  258. config ARCH_IXP23XX
  259. bool "IXP23XX-based"
  260. depends on MMU
  261. select PCI
  262. help
  263. Support for Intel's IXP23xx (XScale) family of processors.
  264. config ARCH_IXP2000
  265. bool "IXP2400/2800-based"
  266. depends on MMU
  267. select PCI
  268. help
  269. Support for Intel's IXP2400/2800 (XScale) family of processors.
  270. config ARCH_IXP4XX
  271. bool "IXP4xx-based"
  272. depends on MMU
  273. select GENERIC_GPIO
  274. select GENERIC_TIME
  275. select GENERIC_CLOCKEVENTS
  276. help
  277. Support for Intel's IXP4XX (XScale) family of processors.
  278. config ARCH_L7200
  279. bool "LinkUp-L7200"
  280. select FIQ
  281. help
  282. Say Y here if you intend to run this kernel on a LinkUp Systems
  283. L7200 Software Development Board which uses an ARM720T processor.
  284. Information on this board can be obtained at:
  285. <http://www.linkupsys.com/>
  286. If you have any questions or comments about the Linux kernel port
  287. to this board, send e-mail to <sjhill@cotw.com>.
  288. config ARCH_KIRKWOOD
  289. bool "Marvell Kirkwood"
  290. select PCI
  291. select GENERIC_TIME
  292. select GENERIC_CLOCKEVENTS
  293. select PLAT_ORION
  294. help
  295. Support for the following Marvell Kirkwood series SoCs:
  296. 88F6180, 88F6192 and 88F6281.
  297. config ARCH_KS8695
  298. bool "Micrel/Kendin KS8695"
  299. select GENERIC_GPIO
  300. help
  301. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  302. System-on-Chip devices.
  303. config ARCH_NS9XXX
  304. bool "NetSilicon NS9xxx"
  305. select GENERIC_GPIO
  306. select GENERIC_TIME
  307. select GENERIC_CLOCKEVENTS
  308. help
  309. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  310. System.
  311. <http://www.digi.com/products/microprocessors/index.jsp>
  312. config ARCH_LOKI
  313. bool "Marvell Loki (88RC8480)"
  314. select GENERIC_TIME
  315. select GENERIC_CLOCKEVENTS
  316. select PLAT_ORION
  317. help
  318. Support for the Marvell Loki (88RC8480) SoC.
  319. config ARCH_MV78XX0
  320. bool "Marvell MV78xx0"
  321. select PCI
  322. select GENERIC_TIME
  323. select GENERIC_CLOCKEVENTS
  324. select PLAT_ORION
  325. help
  326. Support for the following Marvell MV78xx0 series SoCs:
  327. MV781x0, MV782x0.
  328. config ARCH_MXC
  329. bool "Freescale MXC/iMX-based"
  330. select ARCH_MTD_XIP
  331. help
  332. Support for Freescale MXC/iMX-based family of processors
  333. config ARCH_ORION5X
  334. bool "Marvell Orion"
  335. depends on MMU
  336. select PCI
  337. select GENERIC_GPIO
  338. select GENERIC_TIME
  339. select GENERIC_CLOCKEVENTS
  340. select PLAT_ORION
  341. help
  342. Support for the following Marvell Orion 5x series SoCs:
  343. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  344. Orion-2 (5281).
  345. config ARCH_PNX4008
  346. bool "Philips Nexperia PNX4008 Mobile"
  347. help
  348. This enables support for Philips PNX4008 mobile platform.
  349. config ARCH_PXA
  350. bool "PXA2xx/PXA3xx-based"
  351. depends on MMU
  352. select ARCH_MTD_XIP
  353. select GENERIC_GPIO
  354. select HAVE_GPIO_LIB
  355. select GENERIC_TIME
  356. select GENERIC_CLOCKEVENTS
  357. select TICK_ONESHOT
  358. help
  359. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  360. config ARCH_RPC
  361. bool "RiscPC"
  362. select ARCH_ACORN
  363. select FIQ
  364. select TIMER_ACORN
  365. select ARCH_MAY_HAVE_PC_FDC
  366. select HAVE_PATA_PLATFORM
  367. select ISA_DMA_API
  368. select NO_IOPORT
  369. help
  370. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  371. CD-ROM interface, serial and parallel port, and the floppy drive.
  372. config ARCH_SA1100
  373. bool "SA1100-based"
  374. select ISA
  375. select ARCH_DISCONTIGMEM_ENABLE
  376. select ARCH_SPARSEMEM_ENABLE
  377. select ARCH_SELECT_MEMORY_MODEL
  378. select ARCH_MTD_XIP
  379. select GENERIC_GPIO
  380. select GENERIC_TIME
  381. select GENERIC_CLOCKEVENTS
  382. select TICK_ONESHOT
  383. select HAVE_GPIO_LIB
  384. help
  385. Support for StrongARM 11x0 based boards.
  386. config ARCH_S3C2410
  387. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  388. select GENERIC_GPIO
  389. help
  390. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  391. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  392. the Samsung SMDK2410 development board (and derivatives).
  393. config ARCH_SHARK
  394. bool "Shark"
  395. select ISA
  396. select ISA_DMA
  397. select PCI
  398. help
  399. Support for the StrongARM based Digital DNARD machine, also known
  400. as "Shark" (<http://www.shark-linux.de/shark.html>).
  401. config ARCH_LH7A40X
  402. bool "Sharp LH7A40X"
  403. help
  404. Say Y here for systems based on one of the Sharp LH7A40X
  405. System on a Chip processors. These CPUs include an ARM922T
  406. core with a wide array of integrated devices for
  407. hand-held and low-power applications.
  408. config ARCH_DAVINCI
  409. bool "TI DaVinci"
  410. select GENERIC_TIME
  411. select GENERIC_CLOCKEVENTS
  412. select GENERIC_GPIO
  413. help
  414. Support for TI's DaVinci platform.
  415. config ARCH_OMAP
  416. bool "TI OMAP"
  417. select GENERIC_GPIO
  418. select HAVE_GPIO_LIB
  419. select GENERIC_TIME
  420. select GENERIC_CLOCKEVENTS
  421. help
  422. Support for TI's OMAP platform (OMAP1 and OMAP2).
  423. config ARCH_MSM7X00A
  424. bool "Qualcomm MSM7X00A"
  425. select GENERIC_TIME
  426. select GENERIC_CLOCKEVENTS
  427. help
  428. Support for Qualcomm MSM7X00A based systems. This runs on the ARM11
  429. apps processor of the MSM7X00A and depends on a shared memory
  430. interface to the ARM9 modem processor which runs the baseband stack
  431. and controls some vital subsystems (clock and power control, etc).
  432. <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp>
  433. endchoice
  434. source "arch/arm/mach-clps711x/Kconfig"
  435. source "arch/arm/mach-ep93xx/Kconfig"
  436. source "arch/arm/mach-footbridge/Kconfig"
  437. source "arch/arm/mach-integrator/Kconfig"
  438. source "arch/arm/mach-iop32x/Kconfig"
  439. source "arch/arm/mach-iop33x/Kconfig"
  440. source "arch/arm/mach-iop13xx/Kconfig"
  441. source "arch/arm/mach-ixp4xx/Kconfig"
  442. source "arch/arm/mach-ixp2000/Kconfig"
  443. source "arch/arm/mach-ixp23xx/Kconfig"
  444. source "arch/arm/mach-loki/Kconfig"
  445. source "arch/arm/mach-mv78xx0/Kconfig"
  446. source "arch/arm/mach-pxa/Kconfig"
  447. source "arch/arm/mach-sa1100/Kconfig"
  448. source "arch/arm/plat-omap/Kconfig"
  449. source "arch/arm/mach-omap1/Kconfig"
  450. source "arch/arm/mach-omap2/Kconfig"
  451. source "arch/arm/mach-orion5x/Kconfig"
  452. source "arch/arm/mach-kirkwood/Kconfig"
  453. source "arch/arm/plat-s3c24xx/Kconfig"
  454. source "arch/arm/plat-s3c/Kconfig"
  455. if ARCH_S3C2410
  456. source "arch/arm/mach-s3c2400/Kconfig"
  457. source "arch/arm/mach-s3c2410/Kconfig"
  458. source "arch/arm/mach-s3c2412/Kconfig"
  459. source "arch/arm/mach-s3c2440/Kconfig"
  460. source "arch/arm/mach-s3c2442/Kconfig"
  461. source "arch/arm/mach-s3c2443/Kconfig"
  462. endif
  463. source "arch/arm/mach-lh7a40x/Kconfig"
  464. source "arch/arm/mach-imx/Kconfig"
  465. source "arch/arm/mach-h720x/Kconfig"
  466. source "arch/arm/mach-versatile/Kconfig"
  467. source "arch/arm/mach-aaec2000/Kconfig"
  468. source "arch/arm/mach-realview/Kconfig"
  469. source "arch/arm/mach-at91/Kconfig"
  470. source "arch/arm/plat-mxc/Kconfig"
  471. source "arch/arm/mach-netx/Kconfig"
  472. source "arch/arm/mach-ns9xxx/Kconfig"
  473. source "arch/arm/mach-davinci/Kconfig"
  474. source "arch/arm/mach-ks8695/Kconfig"
  475. source "arch/arm/mach-msm/Kconfig"
  476. # Definitions to make life easier
  477. config ARCH_ACORN
  478. bool
  479. config PLAT_IOP
  480. bool
  481. config PLAT_ORION
  482. bool
  483. source arch/arm/mm/Kconfig
  484. config IWMMXT
  485. bool "Enable iWMMXt support"
  486. depends on CPU_XSCALE || CPU_XSC3
  487. default y if PXA27x || PXA3xx
  488. help
  489. Enable support for iWMMXt context switching at run time if
  490. running on a CPU that supports it.
  491. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  492. config XSCALE_PMU
  493. bool
  494. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  495. default y
  496. if !MMU
  497. source "arch/arm/Kconfig-nommu"
  498. endif
  499. endmenu
  500. source "arch/arm/common/Kconfig"
  501. config FORCE_MAX_ZONEORDER
  502. int
  503. depends on SA1111
  504. default "9"
  505. menu "Bus support"
  506. config ARM_AMBA
  507. bool
  508. config ISA
  509. bool
  510. help
  511. Find out whether you have ISA slots on your motherboard. ISA is the
  512. name of a bus system, i.e. the way the CPU talks to the other stuff
  513. inside your box. Other bus systems are PCI, EISA, MicroChannel
  514. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  515. newer boards don't support it. If you have ISA, say Y, otherwise N.
  516. # Select ISA DMA controller support
  517. config ISA_DMA
  518. bool
  519. select ISA_DMA_API
  520. # Select ISA DMA interface
  521. config ISA_DMA_API
  522. bool
  523. config PCI
  524. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  525. help
  526. Find out whether you have a PCI motherboard. PCI is the name of a
  527. bus system, i.e. the way the CPU talks to the other stuff inside
  528. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  529. VESA. If you have PCI, say Y, otherwise N.
  530. config PCI_SYSCALL
  531. def_bool PCI
  532. # Select the host bridge type
  533. config PCI_HOST_VIA82C505
  534. bool
  535. depends on PCI && ARCH_SHARK
  536. default y
  537. config PCI_HOST_ITE8152
  538. bool
  539. depends on PCI && MACH_ARMCORE
  540. default y
  541. select DMABOUNCE
  542. source "drivers/pci/Kconfig"
  543. source "drivers/pcmcia/Kconfig"
  544. endmenu
  545. menu "Kernel Features"
  546. source "kernel/time/Kconfig"
  547. config SMP
  548. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  549. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
  550. help
  551. This enables support for systems with more than one CPU. If you have
  552. a system with only one CPU, like most personal computers, say N. If
  553. you have a system with more than one CPU, say Y.
  554. If you say N here, the kernel will run on single and multiprocessor
  555. machines, but will use only one CPU of a multiprocessor machine. If
  556. you say Y here, the kernel will run on many, but not all, single
  557. processor machines. On a single processor machine, the kernel will
  558. run faster if you say N here.
  559. See also <file:Documentation/i386/IO-APIC.txt>,
  560. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  561. <http://www.linuxdoc.org/docs.html#howto>.
  562. If you don't know what to do here, say N.
  563. config NR_CPUS
  564. int "Maximum number of CPUs (2-32)"
  565. range 2 32
  566. depends on SMP
  567. default "4"
  568. config HOTPLUG_CPU
  569. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  570. depends on SMP && HOTPLUG && EXPERIMENTAL
  571. help
  572. Say Y here to experiment with turning CPUs off and on. CPUs
  573. can be controlled through /sys/devices/system/cpu.
  574. config LOCAL_TIMERS
  575. bool "Use local timer interrupts"
  576. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
  577. default y
  578. help
  579. Enable support for local timers on SMP platforms, rather then the
  580. legacy IPI broadcast method. Local timers allows the system
  581. accounting to be spread across the timer interval, preventing a
  582. "thundering herd" at every timer tick.
  583. config PREEMPT
  584. bool "Preemptible Kernel (EXPERIMENTAL)"
  585. depends on EXPERIMENTAL
  586. help
  587. This option reduces the latency of the kernel when reacting to
  588. real-time or interactive events by allowing a low priority process to
  589. be preempted even if it is in kernel mode executing a system call.
  590. This allows applications to run more reliably even when the system is
  591. under load.
  592. Say Y here if you are building a kernel for a desktop, embedded
  593. or real-time system. Say N if you are unsure.
  594. config HZ
  595. int
  596. default 128 if ARCH_L7200
  597. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  598. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  599. default AT91_TIMER_HZ if ARCH_AT91
  600. default 100
  601. config AEABI
  602. bool "Use the ARM EABI to compile the kernel"
  603. help
  604. This option allows for the kernel to be compiled using the latest
  605. ARM ABI (aka EABI). This is only useful if you are using a user
  606. space environment that is also compiled with EABI.
  607. Since there are major incompatibilities between the legacy ABI and
  608. EABI, especially with regard to structure member alignment, this
  609. option also changes the kernel syscall calling convention to
  610. disambiguate both ABIs and allow for backward compatibility support
  611. (selected with CONFIG_OABI_COMPAT).
  612. To use this you need GCC version 4.0.0 or later.
  613. config OABI_COMPAT
  614. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  615. depends on AEABI && EXPERIMENTAL
  616. default y
  617. help
  618. This option preserves the old syscall interface along with the
  619. new (ARM EABI) one. It also provides a compatibility layer to
  620. intercept syscalls that have structure arguments which layout
  621. in memory differs between the legacy ABI and the new ARM EABI
  622. (only for non "thumb" binaries). This option adds a tiny
  623. overhead to all syscalls and produces a slightly larger kernel.
  624. If you know you'll be using only pure EABI user space then you
  625. can say N here. If this option is not selected and you attempt
  626. to execute a legacy ABI binary then the result will be
  627. UNPREDICTABLE (in fact it can be predicted that it won't work
  628. at all). If in doubt say Y.
  629. config ARCH_DISCONTIGMEM_ENABLE
  630. bool
  631. default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
  632. help
  633. Say Y to support efficient handling of discontiguous physical memory,
  634. for architectures which are either NUMA (Non-Uniform Memory Access)
  635. or have huge holes in the physical address space for other reasons.
  636. See <file:Documentation/vm/numa> for more.
  637. config ARCH_SPARSEMEM_ENABLE
  638. bool
  639. config ARCH_SELECT_MEMORY_MODEL
  640. bool
  641. config NODES_SHIFT
  642. int
  643. default "4" if ARCH_LH7A40X
  644. default "2"
  645. depends on NEED_MULTIPLE_NODES
  646. source "mm/Kconfig"
  647. config LEDS
  648. bool "Timer and CPU usage LEDs"
  649. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  650. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  651. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  652. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  653. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  654. ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
  655. ARCH_KS8695 || MACH_RD88F5182
  656. help
  657. If you say Y here, the LEDs on your machine will be used
  658. to provide useful information about your current system status.
  659. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  660. be able to select which LEDs are active using the options below. If
  661. you are compiling a kernel for the EBSA-110 or the LART however, the
  662. red LED will simply flash regularly to indicate that the system is
  663. still functional. It is safe to say Y here if you have a CATS
  664. system, but the driver will do nothing.
  665. config LEDS_TIMER
  666. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  667. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  668. || MACH_OMAP_PERSEUS2
  669. depends on LEDS
  670. depends on !GENERIC_CLOCKEVENTS
  671. default y if ARCH_EBSA110
  672. help
  673. If you say Y here, one of the system LEDs (the green one on the
  674. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  675. will flash regularly to indicate that the system is still
  676. operational. This is mainly useful to kernel hackers who are
  677. debugging unstable kernels.
  678. The LART uses the same LED for both Timer LED and CPU usage LED
  679. functions. You may choose to use both, but the Timer LED function
  680. will overrule the CPU usage LED.
  681. config LEDS_CPU
  682. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  683. !ARCH_OMAP) \
  684. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  685. || MACH_OMAP_PERSEUS2
  686. depends on LEDS
  687. help
  688. If you say Y here, the red LED will be used to give a good real
  689. time indication of CPU usage, by lighting whenever the idle task
  690. is not currently executing.
  691. The LART uses the same LED for both Timer LED and CPU usage LED
  692. functions. You may choose to use both, but the Timer LED function
  693. will overrule the CPU usage LED.
  694. config ALIGNMENT_TRAP
  695. bool
  696. depends on CPU_CP15_MMU
  697. default y if !ARCH_EBSA110
  698. help
  699. ARM processors cannot fetch/store information which is not
  700. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  701. address divisible by 4. On 32-bit ARM processors, these non-aligned
  702. fetch/store instructions will be emulated in software if you say
  703. here, which has a severe performance impact. This is necessary for
  704. correct operation of some network protocols. With an IP-only
  705. configuration it is safe to say N, otherwise say Y.
  706. endmenu
  707. menu "Boot options"
  708. # Compressed boot loader in ROM. Yes, we really want to ask about
  709. # TEXT and BSS so we preserve their values in the config files.
  710. config ZBOOT_ROM_TEXT
  711. hex "Compressed ROM boot loader base address"
  712. default "0"
  713. help
  714. The physical address at which the ROM-able zImage is to be
  715. placed in the target. Platforms which normally make use of
  716. ROM-able zImage formats normally set this to a suitable
  717. value in their defconfig file.
  718. If ZBOOT_ROM is not enabled, this has no effect.
  719. config ZBOOT_ROM_BSS
  720. hex "Compressed ROM boot loader BSS address"
  721. default "0"
  722. help
  723. The base address of an area of read/write memory in the target
  724. for the ROM-able zImage which must be available while the
  725. decompressor is running. It must be large enough to hold the
  726. entire decompressed kernel plus an additional 128 KiB.
  727. Platforms which normally make use of ROM-able zImage formats
  728. normally set this to a suitable value in their defconfig file.
  729. If ZBOOT_ROM is not enabled, this has no effect.
  730. config ZBOOT_ROM
  731. bool "Compressed boot loader in ROM/flash"
  732. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  733. help
  734. Say Y here if you intend to execute your compressed kernel image
  735. (zImage) directly from ROM or flash. If unsure, say N.
  736. config CMDLINE
  737. string "Default kernel command string"
  738. default ""
  739. help
  740. On some architectures (EBSA110 and CATS), there is currently no way
  741. for the boot loader to pass arguments to the kernel. For these
  742. architectures, you should supply some command-line options at build
  743. time by entering them here. As a minimum, you should specify the
  744. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  745. config XIP_KERNEL
  746. bool "Kernel Execute-In-Place from ROM"
  747. depends on !ZBOOT_ROM
  748. help
  749. Execute-In-Place allows the kernel to run from non-volatile storage
  750. directly addressable by the CPU, such as NOR flash. This saves RAM
  751. space since the text section of the kernel is not loaded from flash
  752. to RAM. Read-write sections, such as the data section and stack,
  753. are still copied to RAM. The XIP kernel is not compressed since
  754. it has to run directly from flash, so it will take more space to
  755. store it. The flash address used to link the kernel object files,
  756. and for storing it, is configuration dependent. Therefore, if you
  757. say Y here, you must know the proper physical address where to
  758. store the kernel image depending on your own flash memory usage.
  759. Also note that the make target becomes "make xipImage" rather than
  760. "make zImage" or "make Image". The final kernel binary to put in
  761. ROM memory will be arch/arm/boot/xipImage.
  762. If unsure, say N.
  763. config XIP_PHYS_ADDR
  764. hex "XIP Kernel Physical Location"
  765. depends on XIP_KERNEL
  766. default "0x00080000"
  767. help
  768. This is the physical address in your flash memory the kernel will
  769. be linked for and stored to. This address is dependent on your
  770. own flash usage.
  771. config KEXEC
  772. bool "Kexec system call (EXPERIMENTAL)"
  773. depends on EXPERIMENTAL
  774. help
  775. kexec is a system call that implements the ability to shutdown your
  776. current kernel, and to start another kernel. It is like a reboot
  777. but it is independent of the system firmware. And like a reboot
  778. you can start any kernel with it, not just Linux.
  779. It is an ongoing process to be certain the hardware in a machine
  780. is properly shutdown, so do not be surprised if this code does not
  781. initially work for you. It may help to enable device hotplugging
  782. support.
  783. config ATAGS_PROC
  784. bool "Export atags in procfs"
  785. depends on KEXEC
  786. default y
  787. help
  788. Should the atags used to boot the kernel be exported in an "atags"
  789. file in procfs. Useful with kexec.
  790. endmenu
  791. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
  792. menu "CPU Frequency scaling"
  793. source "drivers/cpufreq/Kconfig"
  794. config CPU_FREQ_SA1100
  795. bool
  796. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  797. default y
  798. config CPU_FREQ_SA1110
  799. bool
  800. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  801. default y
  802. config CPU_FREQ_INTEGRATOR
  803. tristate "CPUfreq driver for ARM Integrator CPUs"
  804. depends on ARCH_INTEGRATOR && CPU_FREQ
  805. default y
  806. help
  807. This enables the CPUfreq driver for ARM Integrator CPUs.
  808. For details, take a look at <file:Documentation/cpu-freq>.
  809. If in doubt, say Y.
  810. config CPU_FREQ_IMX
  811. tristate "CPUfreq driver for i.MX CPUs"
  812. depends on ARCH_IMX && CPU_FREQ
  813. default n
  814. help
  815. This enables the CPUfreq driver for i.MX CPUs.
  816. If in doubt, say N.
  817. config CPU_FREQ_PXA
  818. bool
  819. depends on CPU_FREQ && ARCH_PXA && PXA25x
  820. default y
  821. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  822. endmenu
  823. endif
  824. menu "Floating point emulation"
  825. comment "At least one emulation must be selected"
  826. config FPE_NWFPE
  827. bool "NWFPE math emulation"
  828. depends on !AEABI || OABI_COMPAT
  829. ---help---
  830. Say Y to include the NWFPE floating point emulator in the kernel.
  831. This is necessary to run most binaries. Linux does not currently
  832. support floating point hardware so you need to say Y here even if
  833. your machine has an FPA or floating point co-processor podule.
  834. You may say N here if you are going to load the Acorn FPEmulator
  835. early in the bootup.
  836. config FPE_NWFPE_XP
  837. bool "Support extended precision"
  838. depends on FPE_NWFPE
  839. help
  840. Say Y to include 80-bit support in the kernel floating-point
  841. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  842. Note that gcc does not generate 80-bit operations by default,
  843. so in most cases this option only enlarges the size of the
  844. floating point emulator without any good reason.
  845. You almost surely want to say N here.
  846. config FPE_FASTFPE
  847. bool "FastFPE math emulation (EXPERIMENTAL)"
  848. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  849. ---help---
  850. Say Y here to include the FAST floating point emulator in the kernel.
  851. This is an experimental much faster emulator which now also has full
  852. precision for the mantissa. It does not support any exceptions.
  853. It is very simple, and approximately 3-6 times faster than NWFPE.
  854. It should be sufficient for most programs. It may be not suitable
  855. for scientific calculations, but you have to check this for yourself.
  856. If you do not feel you need a faster FP emulation you should better
  857. choose NWFPE.
  858. config VFP
  859. bool "VFP-format floating point maths"
  860. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  861. help
  862. Say Y to include VFP support code in the kernel. This is needed
  863. if your hardware includes a VFP unit.
  864. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  865. release notes and additional status information.
  866. Say N if your target does not have VFP hardware.
  867. config VFPv3
  868. bool
  869. depends on VFP
  870. default y if CPU_V7
  871. config NEON
  872. bool "Advanced SIMD (NEON) Extension support"
  873. depends on VFPv3 && CPU_V7
  874. help
  875. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  876. Extension.
  877. endmenu
  878. menu "Userspace binary formats"
  879. source "fs/Kconfig.binfmt"
  880. config ARTHUR
  881. tristate "RISC OS personality"
  882. depends on !AEABI
  883. help
  884. Say Y here to include the kernel code necessary if you want to run
  885. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  886. experimental; if this sounds frightening, say N and sleep in peace.
  887. You can also say M here to compile this support as a module (which
  888. will be called arthur).
  889. endmenu
  890. menu "Power management options"
  891. source "kernel/power/Kconfig"
  892. config ARCH_SUSPEND_POSSIBLE
  893. def_bool y
  894. endmenu
  895. source "net/Kconfig"
  896. menu "Device Drivers"
  897. source "drivers/base/Kconfig"
  898. source "drivers/connector/Kconfig"
  899. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  900. source "drivers/mtd/Kconfig"
  901. endif
  902. source "drivers/parport/Kconfig"
  903. source "drivers/pnp/Kconfig"
  904. source "drivers/block/Kconfig"
  905. # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
  906. source "drivers/misc/Kconfig"
  907. source "drivers/ide/Kconfig"
  908. source "drivers/scsi/Kconfig"
  909. source "drivers/ata/Kconfig"
  910. source "drivers/md/Kconfig"
  911. source "drivers/message/fusion/Kconfig"
  912. source "drivers/ieee1394/Kconfig"
  913. source "drivers/message/i2o/Kconfig"
  914. source "drivers/net/Kconfig"
  915. source "drivers/isdn/Kconfig"
  916. # input before char - char/joystick depends on it. As does USB.
  917. source "drivers/input/Kconfig"
  918. source "drivers/char/Kconfig"
  919. source "drivers/i2c/Kconfig"
  920. source "drivers/spi/Kconfig"
  921. source "drivers/gpio/Kconfig"
  922. source "drivers/w1/Kconfig"
  923. source "drivers/power/Kconfig"
  924. source "drivers/hwmon/Kconfig"
  925. source "drivers/watchdog/Kconfig"
  926. source "drivers/ssb/Kconfig"
  927. #source "drivers/l3/Kconfig"
  928. source "drivers/mfd/Kconfig"
  929. source "drivers/media/Kconfig"
  930. source "drivers/video/Kconfig"
  931. source "sound/Kconfig"
  932. source "drivers/hid/Kconfig"
  933. source "drivers/usb/Kconfig"
  934. source "drivers/mmc/Kconfig"
  935. source "drivers/leds/Kconfig"
  936. source "drivers/rtc/Kconfig"
  937. source "drivers/dma/Kconfig"
  938. source "drivers/dca/Kconfig"
  939. source "drivers/uio/Kconfig"
  940. endmenu
  941. source "fs/Kconfig"
  942. source "arch/arm/Kconfig.debug"
  943. source "security/Kconfig"
  944. source "crypto/Kconfig"
  945. source "lib/Kconfig"