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