Kconfig 32 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_AOUT
  10. select HAVE_IDE
  11. select RTC_LIB
  12. select SYS_SUPPORTS_APM_EMULATION
  13. select HAVE_OPROFILE
  14. select HAVE_ARCH_KGDB
  15. select HAVE_KPROBES if (!XIP_KERNEL)
  16. select HAVE_KRETPROBES if (HAVE_KPROBES)
  17. select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  18. select HAVE_GENERIC_DMA_COHERENT
  19. help
  20. The ARM series is a line of low-power-consumption RISC chip designs
  21. licensed by ARM Ltd and targeted at embedded applications and
  22. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  23. manufactured, but legacy ARM-based PC hardware remains popular in
  24. Europe. There is an ARM Linux project with a web page at
  25. <http://www.arm.linux.org.uk/>.
  26. config HAVE_PWM
  27. bool
  28. config SYS_SUPPORTS_APM_EMULATION
  29. bool
  30. config GENERIC_GPIO
  31. bool
  32. default n
  33. config GENERIC_TIME
  34. bool
  35. default n
  36. config GENERIC_CLOCKEVENTS
  37. bool
  38. default n
  39. config GENERIC_CLOCKEVENTS_BROADCAST
  40. bool
  41. depends on GENERIC_CLOCKEVENTS
  42. default y if SMP && !LOCAL_TIMERS
  43. config MMU
  44. bool
  45. default y
  46. config NO_IOPORT
  47. bool
  48. default n
  49. config EISA
  50. bool
  51. ---help---
  52. The Extended Industry Standard Architecture (EISA) bus was
  53. developed as an open alternative to the IBM MicroChannel bus.
  54. The EISA bus provided some of the features of the IBM MicroChannel
  55. bus while maintaining backward compatibility with cards made for
  56. the older ISA bus. The EISA bus saw limited use between 1988 and
  57. 1995 when it was made obsolete by the PCI bus.
  58. Say Y here if you are building a kernel for an EISA-based machine.
  59. Otherwise, say N.
  60. config SBUS
  61. bool
  62. config MCA
  63. bool
  64. help
  65. MicroChannel Architecture is found in some IBM PS/2 machines and
  66. laptops. It is a bus system similar to PCI or ISA. See
  67. <file:Documentation/mca.txt> (and especially the web page given
  68. there) before attempting to build an MCA bus kernel.
  69. config GENERIC_HARDIRQS
  70. bool
  71. default y
  72. config STACKTRACE_SUPPORT
  73. bool
  74. default y
  75. config HAVE_LATENCYTOP_SUPPORT
  76. bool
  77. depends on !SMP
  78. default y
  79. config LOCKDEP_SUPPORT
  80. bool
  81. default y
  82. config TRACE_IRQFLAGS_SUPPORT
  83. bool
  84. default y
  85. config HARDIRQS_SW_RESEND
  86. bool
  87. default y
  88. config GENERIC_IRQ_PROBE
  89. bool
  90. default y
  91. config GENERIC_LOCKBREAK
  92. bool
  93. default y
  94. depends on SMP && PREEMPT
  95. config RWSEM_GENERIC_SPINLOCK
  96. bool
  97. default y
  98. config RWSEM_XCHGADD_ALGORITHM
  99. bool
  100. config ARCH_HAS_ILOG2_U32
  101. bool
  102. default n
  103. config ARCH_HAS_ILOG2_U64
  104. bool
  105. default n
  106. config GENERIC_HWEIGHT
  107. bool
  108. default y
  109. config GENERIC_CALIBRATE_DELAY
  110. bool
  111. default y
  112. config ARCH_MAY_HAVE_PC_FDC
  113. bool
  114. config ZONE_DMA
  115. bool
  116. config GENERIC_ISA_DMA
  117. bool
  118. config FIQ
  119. bool
  120. config ARCH_MTD_XIP
  121. bool
  122. config GENERIC_HARDIRQS_NO__DO_IRQ
  123. bool
  124. def_bool y
  125. if OPROFILE
  126. config OPROFILE_ARMV6
  127. def_bool y
  128. depends on CPU_V6 && !SMP
  129. select OPROFILE_ARM11_CORE
  130. config OPROFILE_MPCORE
  131. def_bool y
  132. depends on CPU_V6 && SMP
  133. select OPROFILE_ARM11_CORE
  134. config OPROFILE_ARM11_CORE
  135. bool
  136. config OPROFILE_ARMV7
  137. def_bool y
  138. depends on CPU_V7 && !SMP
  139. bool
  140. endif
  141. config VECTORS_BASE
  142. hex
  143. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  144. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  145. default 0x00000000
  146. help
  147. The base address of exception vectors.
  148. source "init/Kconfig"
  149. source "kernel/Kconfig.freezer"
  150. menu "System Type"
  151. choice
  152. prompt "ARM system type"
  153. default ARCH_VERSATILE
  154. config ARCH_AAEC2000
  155. bool "Agilent AAEC-2000 based"
  156. select CPU_ARM920T
  157. select ARM_AMBA
  158. select HAVE_CLK
  159. help
  160. This enables support for systems based on the Agilent AAEC-2000
  161. config ARCH_INTEGRATOR
  162. bool "ARM Ltd. Integrator family"
  163. select ARM_AMBA
  164. select HAVE_CLK
  165. select COMMON_CLKDEV
  166. select ICST525
  167. help
  168. Support for ARM's Integrator platform.
  169. config ARCH_REALVIEW
  170. bool "ARM Ltd. RealView family"
  171. select ARM_AMBA
  172. select HAVE_CLK
  173. select COMMON_CLKDEV
  174. select ICST307
  175. select GENERIC_TIME
  176. select GENERIC_CLOCKEVENTS
  177. help
  178. This enables support for ARM Ltd RealView boards.
  179. config ARCH_VERSATILE
  180. bool "ARM Ltd. Versatile family"
  181. select ARM_AMBA
  182. select ARM_VIC
  183. select HAVE_CLK
  184. select COMMON_CLKDEV
  185. select ICST307
  186. select GENERIC_TIME
  187. select GENERIC_CLOCKEVENTS
  188. help
  189. This enables support for ARM Ltd Versatile board.
  190. config ARCH_AT91
  191. bool "Atmel AT91"
  192. select GENERIC_GPIO
  193. select HAVE_CLK
  194. help
  195. This enables support for systems based on the Atmel AT91RM9200,
  196. AT91SAM9 and AT91CAP9 processors.
  197. config ARCH_CLPS711X
  198. bool "Cirrus Logic CLPS711x/EP721x-based"
  199. select CPU_ARM720T
  200. help
  201. Support for Cirrus Logic 711x/721x based boards.
  202. config ARCH_EBSA110
  203. bool "EBSA-110"
  204. select CPU_SA110
  205. select ISA
  206. select NO_IOPORT
  207. help
  208. This is an evaluation board for the StrongARM processor available
  209. from Digital. It has limited hardware on-board, including an
  210. Ethernet interface, two PCMCIA sockets, two serial ports and a
  211. parallel port.
  212. config ARCH_EP93XX
  213. bool "EP93xx-based"
  214. select CPU_ARM920T
  215. select ARM_AMBA
  216. select ARM_VIC
  217. select GENERIC_GPIO
  218. select HAVE_CLK
  219. select ARCH_REQUIRE_GPIOLIB
  220. help
  221. This enables support for the Cirrus EP93xx series of CPUs.
  222. config ARCH_FOOTBRIDGE
  223. bool "FootBridge"
  224. select CPU_SA110
  225. select FOOTBRIDGE
  226. help
  227. Support for systems based on the DC21285 companion chip
  228. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  229. config ARCH_NETX
  230. bool "Hilscher NetX based"
  231. select CPU_ARM926T
  232. select ARM_VIC
  233. help
  234. This enables support for systems based on the Hilscher NetX Soc
  235. config ARCH_H720X
  236. bool "Hynix HMS720x-based"
  237. select CPU_ARM720T
  238. select ISA_DMA_API
  239. help
  240. This enables support for systems based on the Hynix HMS720x
  241. config ARCH_IMX
  242. bool "IMX"
  243. select CPU_ARM920T
  244. select GENERIC_GPIO
  245. select GENERIC_TIME
  246. select GENERIC_CLOCKEVENTS
  247. help
  248. Support for Motorola's i.MX family of processors (MX1, MXL).
  249. config ARCH_IOP13XX
  250. bool "IOP13xx-based"
  251. depends on MMU
  252. select CPU_XSC3
  253. select PLAT_IOP
  254. select PCI
  255. select ARCH_SUPPORTS_MSI
  256. select VMSPLIT_1G
  257. help
  258. Support for Intel's IOP13XX (XScale) family of processors.
  259. config ARCH_IOP32X
  260. bool "IOP32x-based"
  261. depends on MMU
  262. select CPU_XSCALE
  263. select PLAT_IOP
  264. select PCI
  265. select GENERIC_GPIO
  266. select ARCH_REQUIRE_GPIOLIB
  267. help
  268. Support for Intel's 80219 and IOP32X (XScale) family of
  269. processors.
  270. config ARCH_IOP33X
  271. bool "IOP33x-based"
  272. depends on MMU
  273. select CPU_XSCALE
  274. select PLAT_IOP
  275. select PCI
  276. select GENERIC_GPIO
  277. select ARCH_REQUIRE_GPIOLIB
  278. help
  279. Support for Intel's IOP33X (XScale) family of processors.
  280. config ARCH_IXP23XX
  281. bool "IXP23XX-based"
  282. depends on MMU
  283. select CPU_XSC3
  284. select PCI
  285. help
  286. Support for Intel's IXP23xx (XScale) family of processors.
  287. config ARCH_IXP2000
  288. bool "IXP2400/2800-based"
  289. depends on MMU
  290. select CPU_XSCALE
  291. select PCI
  292. help
  293. Support for Intel's IXP2400/2800 (XScale) family of processors.
  294. config ARCH_IXP4XX
  295. bool "IXP4xx-based"
  296. depends on MMU
  297. select CPU_XSCALE
  298. select GENERIC_GPIO
  299. select GENERIC_TIME
  300. select GENERIC_CLOCKEVENTS
  301. select DMABOUNCE if PCI
  302. help
  303. Support for Intel's IXP4XX (XScale) family of processors.
  304. config ARCH_L7200
  305. bool "LinkUp-L7200"
  306. select CPU_ARM720T
  307. select FIQ
  308. help
  309. Say Y here if you intend to run this kernel on a LinkUp Systems
  310. L7200 Software Development Board which uses an ARM720T processor.
  311. Information on this board can be obtained at:
  312. <http://www.linkupsys.com/>
  313. If you have any questions or comments about the Linux kernel port
  314. to this board, send e-mail to <sjhill@cotw.com>.
  315. config ARCH_KIRKWOOD
  316. bool "Marvell Kirkwood"
  317. select CPU_FEROCEON
  318. select PCI
  319. select GENERIC_TIME
  320. select GENERIC_CLOCKEVENTS
  321. select PLAT_ORION
  322. help
  323. Support for the following Marvell Kirkwood series SoCs:
  324. 88F6180, 88F6192 and 88F6281.
  325. config ARCH_KS8695
  326. bool "Micrel/Kendin KS8695"
  327. select CPU_ARM922T
  328. select GENERIC_GPIO
  329. help
  330. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  331. System-on-Chip devices.
  332. config ARCH_NS9XXX
  333. bool "NetSilicon NS9xxx"
  334. select CPU_ARM926T
  335. select GENERIC_GPIO
  336. select GENERIC_TIME
  337. select GENERIC_CLOCKEVENTS
  338. select HAVE_CLK
  339. help
  340. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  341. System.
  342. <http://www.digi.com/products/microprocessors/index.jsp>
  343. config ARCH_LOKI
  344. bool "Marvell Loki (88RC8480)"
  345. select CPU_FEROCEON
  346. select GENERIC_TIME
  347. select GENERIC_CLOCKEVENTS
  348. select PLAT_ORION
  349. help
  350. Support for the Marvell Loki (88RC8480) SoC.
  351. config ARCH_MV78XX0
  352. bool "Marvell MV78xx0"
  353. select CPU_FEROCEON
  354. select PCI
  355. select GENERIC_TIME
  356. select GENERIC_CLOCKEVENTS
  357. select PLAT_ORION
  358. help
  359. Support for the following Marvell MV78xx0 series SoCs:
  360. MV781x0, MV782x0.
  361. config ARCH_MXC
  362. bool "Freescale MXC/iMX-based"
  363. select GENERIC_TIME
  364. select GENERIC_CLOCKEVENTS
  365. select ARCH_MTD_XIP
  366. select GENERIC_GPIO
  367. select ARCH_REQUIRE_GPIOLIB
  368. help
  369. Support for Freescale MXC/iMX-based family of processors
  370. config ARCH_ORION5X
  371. bool "Marvell Orion"
  372. depends on MMU
  373. select CPU_FEROCEON
  374. select PCI
  375. select GENERIC_GPIO
  376. select GENERIC_TIME
  377. select GENERIC_CLOCKEVENTS
  378. select PLAT_ORION
  379. help
  380. Support for the following Marvell Orion 5x series SoCs:
  381. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  382. Orion-2 (5281), Orion-1-90 (6183).
  383. config ARCH_PNX4008
  384. bool "Philips Nexperia PNX4008 Mobile"
  385. select CPU_ARM926T
  386. select HAVE_CLK
  387. help
  388. This enables support for Philips PNX4008 mobile platform.
  389. config ARCH_PXA
  390. bool "PXA2xx/PXA3xx-based"
  391. depends on MMU
  392. select ARCH_MTD_XIP
  393. select GENERIC_GPIO
  394. select HAVE_CLK
  395. select COMMON_CLKDEV
  396. select ARCH_REQUIRE_GPIOLIB
  397. select GENERIC_TIME
  398. select GENERIC_CLOCKEVENTS
  399. select TICK_ONESHOT
  400. help
  401. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  402. config ARCH_RPC
  403. bool "RiscPC"
  404. select ARCH_ACORN
  405. select FIQ
  406. select TIMER_ACORN
  407. select ARCH_MAY_HAVE_PC_FDC
  408. select HAVE_PATA_PLATFORM
  409. select ISA_DMA_API
  410. select NO_IOPORT
  411. select ARCH_SPARSEMEM_ENABLE
  412. help
  413. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  414. CD-ROM interface, serial and parallel port, and the floppy drive.
  415. config ARCH_SA1100
  416. bool "SA1100-based"
  417. select CPU_SA1100
  418. select ISA
  419. select ARCH_SPARSEMEM_ENABLE
  420. select ARCH_MTD_XIP
  421. select GENERIC_GPIO
  422. select GENERIC_TIME
  423. select GENERIC_CLOCKEVENTS
  424. select HAVE_CLK
  425. select TICK_ONESHOT
  426. select ARCH_REQUIRE_GPIOLIB
  427. help
  428. Support for StrongARM 11x0 based boards.
  429. config ARCH_S3C2410
  430. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  431. select GENERIC_GPIO
  432. select HAVE_CLK
  433. help
  434. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  435. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  436. the Samsung SMDK2410 development board (and derivatives).
  437. config ARCH_SHARK
  438. bool "Shark"
  439. select CPU_SA110
  440. select ISA
  441. select ISA_DMA
  442. select ZONE_DMA
  443. select PCI
  444. help
  445. Support for the StrongARM based Digital DNARD machine, also known
  446. as "Shark" (<http://www.shark-linux.de/shark.html>).
  447. config ARCH_LH7A40X
  448. bool "Sharp LH7A40X"
  449. select CPU_ARM922T
  450. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  451. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  452. help
  453. Say Y here for systems based on one of the Sharp LH7A40X
  454. System on a Chip processors. These CPUs include an ARM922T
  455. core with a wide array of integrated devices for
  456. hand-held and low-power applications.
  457. config ARCH_DAVINCI
  458. bool "TI DaVinci"
  459. select CPU_ARM926T
  460. select GENERIC_TIME
  461. select GENERIC_CLOCKEVENTS
  462. select GENERIC_GPIO
  463. select ARCH_REQUIRE_GPIOLIB
  464. select HAVE_CLK
  465. select ZONE_DMA
  466. help
  467. Support for TI's DaVinci platform.
  468. config ARCH_OMAP
  469. bool "TI OMAP"
  470. select GENERIC_GPIO
  471. select HAVE_CLK
  472. select ARCH_REQUIRE_GPIOLIB
  473. select GENERIC_TIME
  474. select GENERIC_CLOCKEVENTS
  475. help
  476. Support for TI's OMAP platform (OMAP1 and OMAP2).
  477. config ARCH_MSM
  478. bool "Qualcomm MSM"
  479. select CPU_V6
  480. select GENERIC_TIME
  481. select GENERIC_CLOCKEVENTS
  482. help
  483. Support for Qualcomm MSM7K based systems. This runs on the ARM11
  484. apps processor of the MSM7K and depends on a shared memory
  485. interface to the ARM9 modem processor which runs the baseband stack
  486. and controls some vital subsystems (clock and power control, etc).
  487. endchoice
  488. source "arch/arm/mach-clps711x/Kconfig"
  489. source "arch/arm/mach-ep93xx/Kconfig"
  490. source "arch/arm/mach-footbridge/Kconfig"
  491. source "arch/arm/mach-integrator/Kconfig"
  492. source "arch/arm/mach-iop32x/Kconfig"
  493. source "arch/arm/mach-iop33x/Kconfig"
  494. source "arch/arm/mach-iop13xx/Kconfig"
  495. source "arch/arm/mach-ixp4xx/Kconfig"
  496. source "arch/arm/mach-ixp2000/Kconfig"
  497. source "arch/arm/mach-ixp23xx/Kconfig"
  498. source "arch/arm/mach-loki/Kconfig"
  499. source "arch/arm/mach-mv78xx0/Kconfig"
  500. source "arch/arm/mach-pxa/Kconfig"
  501. source "arch/arm/mach-sa1100/Kconfig"
  502. source "arch/arm/plat-omap/Kconfig"
  503. source "arch/arm/mach-omap1/Kconfig"
  504. source "arch/arm/mach-omap2/Kconfig"
  505. source "arch/arm/mach-orion5x/Kconfig"
  506. source "arch/arm/mach-kirkwood/Kconfig"
  507. source "arch/arm/plat-s3c24xx/Kconfig"
  508. source "arch/arm/plat-s3c/Kconfig"
  509. if ARCH_S3C2410
  510. source "arch/arm/mach-s3c2400/Kconfig"
  511. source "arch/arm/mach-s3c2410/Kconfig"
  512. source "arch/arm/mach-s3c2412/Kconfig"
  513. source "arch/arm/mach-s3c2440/Kconfig"
  514. source "arch/arm/mach-s3c2442/Kconfig"
  515. source "arch/arm/mach-s3c2443/Kconfig"
  516. endif
  517. source "arch/arm/mach-lh7a40x/Kconfig"
  518. source "arch/arm/mach-imx/Kconfig"
  519. source "arch/arm/mach-h720x/Kconfig"
  520. source "arch/arm/mach-versatile/Kconfig"
  521. source "arch/arm/mach-aaec2000/Kconfig"
  522. source "arch/arm/mach-realview/Kconfig"
  523. source "arch/arm/mach-at91/Kconfig"
  524. source "arch/arm/plat-mxc/Kconfig"
  525. source "arch/arm/mach-netx/Kconfig"
  526. source "arch/arm/mach-ns9xxx/Kconfig"
  527. source "arch/arm/mach-davinci/Kconfig"
  528. source "arch/arm/mach-ks8695/Kconfig"
  529. source "arch/arm/mach-msm/Kconfig"
  530. # Definitions to make life easier
  531. config ARCH_ACORN
  532. bool
  533. config PLAT_IOP
  534. bool
  535. config PLAT_ORION
  536. bool
  537. source arch/arm/mm/Kconfig
  538. config IWMMXT
  539. bool "Enable iWMMXt support"
  540. depends on CPU_XSCALE || CPU_XSC3
  541. default y if PXA27x || PXA3xx
  542. help
  543. Enable support for iWMMXt context switching at run time if
  544. running on a CPU that supports it.
  545. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  546. config XSCALE_PMU
  547. bool
  548. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  549. default y
  550. if !MMU
  551. source "arch/arm/Kconfig-nommu"
  552. endif
  553. endmenu
  554. source "arch/arm/common/Kconfig"
  555. config FORCE_MAX_ZONEORDER
  556. int
  557. depends on SA1111
  558. default "9"
  559. menu "Bus support"
  560. config ARM_AMBA
  561. bool
  562. config ISA
  563. bool
  564. help
  565. Find out whether you have ISA slots on your motherboard. ISA is the
  566. name of a bus system, i.e. the way the CPU talks to the other stuff
  567. inside your box. Other bus systems are PCI, EISA, MicroChannel
  568. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  569. newer boards don't support it. If you have ISA, say Y, otherwise N.
  570. # Select ISA DMA controller support
  571. config ISA_DMA
  572. bool
  573. select ISA_DMA_API
  574. # Select ISA DMA interface
  575. config ISA_DMA_API
  576. bool
  577. config PCI
  578. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  579. help
  580. Find out whether you have a PCI motherboard. PCI is the name of a
  581. bus system, i.e. the way the CPU talks to the other stuff inside
  582. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  583. VESA. If you have PCI, say Y, otherwise N.
  584. config PCI_SYSCALL
  585. def_bool PCI
  586. # Select the host bridge type
  587. config PCI_HOST_VIA82C505
  588. bool
  589. depends on PCI && ARCH_SHARK
  590. default y
  591. config PCI_HOST_ITE8152
  592. bool
  593. depends on PCI && MACH_ARMCORE
  594. default y
  595. select DMABOUNCE
  596. source "drivers/pci/Kconfig"
  597. source "drivers/pcmcia/Kconfig"
  598. endmenu
  599. menu "Kernel Features"
  600. source "kernel/time/Kconfig"
  601. config SMP
  602. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  603. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
  604. select USE_GENERIC_SMP_HELPERS
  605. help
  606. This enables support for systems with more than one CPU. If you have
  607. a system with only one CPU, like most personal computers, say N. If
  608. you have a system with more than one CPU, say Y.
  609. If you say N here, the kernel will run on single and multiprocessor
  610. machines, but will use only one CPU of a multiprocessor machine. If
  611. you say Y here, the kernel will run on many, but not all, single
  612. processor machines. On a single processor machine, the kernel will
  613. run faster if you say N here.
  614. See also <file:Documentation/i386/IO-APIC.txt>,
  615. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  616. <http://www.linuxdoc.org/docs.html#howto>.
  617. If you don't know what to do here, say N.
  618. choice
  619. prompt "Memory split"
  620. default VMSPLIT_3G
  621. help
  622. Select the desired split between kernel and user memory.
  623. If you are not absolutely sure what you are doing, leave this
  624. option alone!
  625. config VMSPLIT_3G
  626. bool "3G/1G user/kernel split"
  627. config VMSPLIT_2G
  628. bool "2G/2G user/kernel split"
  629. config VMSPLIT_1G
  630. bool "1G/3G user/kernel split"
  631. endchoice
  632. config PAGE_OFFSET
  633. hex
  634. default 0x40000000 if VMSPLIT_1G
  635. default 0x80000000 if VMSPLIT_2G
  636. default 0xC0000000
  637. config NR_CPUS
  638. int "Maximum number of CPUs (2-32)"
  639. range 2 32
  640. depends on SMP
  641. default "4"
  642. config HOTPLUG_CPU
  643. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  644. depends on SMP && HOTPLUG && EXPERIMENTAL
  645. help
  646. Say Y here to experiment with turning CPUs off and on. CPUs
  647. can be controlled through /sys/devices/system/cpu.
  648. config LOCAL_TIMERS
  649. bool "Use local timer interrupts"
  650. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
  651. default y
  652. help
  653. Enable support for local timers on SMP platforms, rather then the
  654. legacy IPI broadcast method. Local timers allows the system
  655. accounting to be spread across the timer interval, preventing a
  656. "thundering herd" at every timer tick.
  657. config PREEMPT
  658. bool "Preemptible Kernel (EXPERIMENTAL)"
  659. depends on EXPERIMENTAL
  660. help
  661. This option reduces the latency of the kernel when reacting to
  662. real-time or interactive events by allowing a low priority process to
  663. be preempted even if it is in kernel mode executing a system call.
  664. This allows applications to run more reliably even when the system is
  665. under load.
  666. Say Y here if you are building a kernel for a desktop, embedded
  667. or real-time system. Say N if you are unsure.
  668. config HZ
  669. int
  670. default 128 if ARCH_L7200
  671. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  672. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  673. default AT91_TIMER_HZ if ARCH_AT91
  674. default 100
  675. config AEABI
  676. bool "Use the ARM EABI to compile the kernel"
  677. help
  678. This option allows for the kernel to be compiled using the latest
  679. ARM ABI (aka EABI). This is only useful if you are using a user
  680. space environment that is also compiled with EABI.
  681. Since there are major incompatibilities between the legacy ABI and
  682. EABI, especially with regard to structure member alignment, this
  683. option also changes the kernel syscall calling convention to
  684. disambiguate both ABIs and allow for backward compatibility support
  685. (selected with CONFIG_OABI_COMPAT).
  686. To use this you need GCC version 4.0.0 or later.
  687. config OABI_COMPAT
  688. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  689. depends on AEABI && EXPERIMENTAL
  690. default y
  691. help
  692. This option preserves the old syscall interface along with the
  693. new (ARM EABI) one. It also provides a compatibility layer to
  694. intercept syscalls that have structure arguments which layout
  695. in memory differs between the legacy ABI and the new ARM EABI
  696. (only for non "thumb" binaries). This option adds a tiny
  697. overhead to all syscalls and produces a slightly larger kernel.
  698. If you know you'll be using only pure EABI user space then you
  699. can say N here. If this option is not selected and you attempt
  700. to execute a legacy ABI binary then the result will be
  701. UNPREDICTABLE (in fact it can be predicted that it won't work
  702. at all). If in doubt say Y.
  703. config ARCH_FLATMEM_HAS_HOLES
  704. bool
  705. default y
  706. depends on FLATMEM
  707. # Discontigmem is deprecated
  708. config ARCH_DISCONTIGMEM_ENABLE
  709. bool
  710. config ARCH_SPARSEMEM_ENABLE
  711. bool
  712. config ARCH_SPARSEMEM_DEFAULT
  713. def_bool ARCH_SPARSEMEM_ENABLE
  714. config ARCH_SELECT_MEMORY_MODEL
  715. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  716. config NODES_SHIFT
  717. int
  718. default "4" if ARCH_LH7A40X
  719. default "2"
  720. depends on NEED_MULTIPLE_NODES
  721. source "mm/Kconfig"
  722. config LEDS
  723. bool "Timer and CPU usage LEDs"
  724. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  725. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  726. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  727. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  728. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  729. ARCH_AT91 || ARCH_DAVINCI || \
  730. ARCH_KS8695 || MACH_RD88F5182
  731. help
  732. If you say Y here, the LEDs on your machine will be used
  733. to provide useful information about your current system status.
  734. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  735. be able to select which LEDs are active using the options below. If
  736. you are compiling a kernel for the EBSA-110 or the LART however, the
  737. red LED will simply flash regularly to indicate that the system is
  738. still functional. It is safe to say Y here if you have a CATS
  739. system, but the driver will do nothing.
  740. config LEDS_TIMER
  741. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  742. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  743. || MACH_OMAP_PERSEUS2
  744. depends on LEDS
  745. depends on !GENERIC_CLOCKEVENTS
  746. default y if ARCH_EBSA110
  747. help
  748. If you say Y here, one of the system LEDs (the green one on the
  749. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  750. will flash regularly to indicate that the system is still
  751. operational. This is mainly useful to kernel hackers who are
  752. debugging unstable kernels.
  753. The LART uses the same LED for both Timer LED and CPU usage LED
  754. functions. You may choose to use both, but the Timer LED function
  755. will overrule the CPU usage LED.
  756. config LEDS_CPU
  757. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  758. !ARCH_OMAP) \
  759. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  760. || MACH_OMAP_PERSEUS2
  761. depends on LEDS
  762. help
  763. If you say Y here, the red LED will be used to give a good real
  764. time indication of CPU usage, by lighting whenever the idle task
  765. is not currently executing.
  766. The LART uses the same LED for both Timer LED and CPU usage LED
  767. functions. You may choose to use both, but the Timer LED function
  768. will overrule the CPU usage LED.
  769. config ALIGNMENT_TRAP
  770. bool
  771. depends on CPU_CP15_MMU
  772. default y if !ARCH_EBSA110
  773. help
  774. ARM processors cannot fetch/store information which is not
  775. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  776. address divisible by 4. On 32-bit ARM processors, these non-aligned
  777. fetch/store instructions will be emulated in software if you say
  778. here, which has a severe performance impact. This is necessary for
  779. correct operation of some network protocols. With an IP-only
  780. configuration it is safe to say N, otherwise say Y.
  781. endmenu
  782. menu "Boot options"
  783. # Compressed boot loader in ROM. Yes, we really want to ask about
  784. # TEXT and BSS so we preserve their values in the config files.
  785. config ZBOOT_ROM_TEXT
  786. hex "Compressed ROM boot loader base address"
  787. default "0"
  788. help
  789. The physical address at which the ROM-able zImage is to be
  790. placed in the target. Platforms which normally make use of
  791. ROM-able zImage formats normally set this to a suitable
  792. value in their defconfig file.
  793. If ZBOOT_ROM is not enabled, this has no effect.
  794. config ZBOOT_ROM_BSS
  795. hex "Compressed ROM boot loader BSS address"
  796. default "0"
  797. help
  798. The base address of an area of read/write memory in the target
  799. for the ROM-able zImage which must be available while the
  800. decompressor is running. It must be large enough to hold the
  801. entire decompressed kernel plus an additional 128 KiB.
  802. Platforms which normally make use of ROM-able zImage formats
  803. normally set this to a suitable value in their defconfig file.
  804. If ZBOOT_ROM is not enabled, this has no effect.
  805. config ZBOOT_ROM
  806. bool "Compressed boot loader in ROM/flash"
  807. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  808. help
  809. Say Y here if you intend to execute your compressed kernel image
  810. (zImage) directly from ROM or flash. If unsure, say N.
  811. config CMDLINE
  812. string "Default kernel command string"
  813. default ""
  814. help
  815. On some architectures (EBSA110 and CATS), there is currently no way
  816. for the boot loader to pass arguments to the kernel. For these
  817. architectures, you should supply some command-line options at build
  818. time by entering them here. As a minimum, you should specify the
  819. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  820. config XIP_KERNEL
  821. bool "Kernel Execute-In-Place from ROM"
  822. depends on !ZBOOT_ROM
  823. help
  824. Execute-In-Place allows the kernel to run from non-volatile storage
  825. directly addressable by the CPU, such as NOR flash. This saves RAM
  826. space since the text section of the kernel is not loaded from flash
  827. to RAM. Read-write sections, such as the data section and stack,
  828. are still copied to RAM. The XIP kernel is not compressed since
  829. it has to run directly from flash, so it will take more space to
  830. store it. The flash address used to link the kernel object files,
  831. and for storing it, is configuration dependent. Therefore, if you
  832. say Y here, you must know the proper physical address where to
  833. store the kernel image depending on your own flash memory usage.
  834. Also note that the make target becomes "make xipImage" rather than
  835. "make zImage" or "make Image". The final kernel binary to put in
  836. ROM memory will be arch/arm/boot/xipImage.
  837. If unsure, say N.
  838. config XIP_PHYS_ADDR
  839. hex "XIP Kernel Physical Location"
  840. depends on XIP_KERNEL
  841. default "0x00080000"
  842. help
  843. This is the physical address in your flash memory the kernel will
  844. be linked for and stored to. This address is dependent on your
  845. own flash usage.
  846. config KEXEC
  847. bool "Kexec system call (EXPERIMENTAL)"
  848. depends on EXPERIMENTAL
  849. help
  850. kexec is a system call that implements the ability to shutdown your
  851. current kernel, and to start another kernel. It is like a reboot
  852. but it is independent of the system firmware. And like a reboot
  853. you can start any kernel with it, not just Linux.
  854. It is an ongoing process to be certain the hardware in a machine
  855. is properly shutdown, so do not be surprised if this code does not
  856. initially work for you. It may help to enable device hotplugging
  857. support.
  858. config ATAGS_PROC
  859. bool "Export atags in procfs"
  860. depends on KEXEC
  861. default y
  862. help
  863. Should the atags used to boot the kernel be exported in an "atags"
  864. file in procfs. Useful with kexec.
  865. endmenu
  866. menu "CPU Power Management"
  867. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
  868. source "drivers/cpufreq/Kconfig"
  869. config CPU_FREQ_SA1100
  870. bool
  871. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  872. default y
  873. config CPU_FREQ_SA1110
  874. bool
  875. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  876. default y
  877. config CPU_FREQ_INTEGRATOR
  878. tristate "CPUfreq driver for ARM Integrator CPUs"
  879. depends on ARCH_INTEGRATOR && CPU_FREQ
  880. default y
  881. help
  882. This enables the CPUfreq driver for ARM Integrator CPUs.
  883. For details, take a look at <file:Documentation/cpu-freq>.
  884. If in doubt, say Y.
  885. config CPU_FREQ_IMX
  886. tristate "CPUfreq driver for i.MX CPUs"
  887. depends on ARCH_IMX && CPU_FREQ
  888. default n
  889. help
  890. This enables the CPUfreq driver for i.MX CPUs.
  891. If in doubt, say N.
  892. config CPU_FREQ_PXA
  893. bool
  894. depends on CPU_FREQ && ARCH_PXA && PXA25x
  895. default y
  896. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  897. endif
  898. source "drivers/cpuidle/Kconfig"
  899. endmenu
  900. menu "Floating point emulation"
  901. comment "At least one emulation must be selected"
  902. config FPE_NWFPE
  903. bool "NWFPE math emulation"
  904. depends on !AEABI || OABI_COMPAT
  905. ---help---
  906. Say Y to include the NWFPE floating point emulator in the kernel.
  907. This is necessary to run most binaries. Linux does not currently
  908. support floating point hardware so you need to say Y here even if
  909. your machine has an FPA or floating point co-processor podule.
  910. You may say N here if you are going to load the Acorn FPEmulator
  911. early in the bootup.
  912. config FPE_NWFPE_XP
  913. bool "Support extended precision"
  914. depends on FPE_NWFPE
  915. help
  916. Say Y to include 80-bit support in the kernel floating-point
  917. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  918. Note that gcc does not generate 80-bit operations by default,
  919. so in most cases this option only enlarges the size of the
  920. floating point emulator without any good reason.
  921. You almost surely want to say N here.
  922. config FPE_FASTFPE
  923. bool "FastFPE math emulation (EXPERIMENTAL)"
  924. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  925. ---help---
  926. Say Y here to include the FAST floating point emulator in the kernel.
  927. This is an experimental much faster emulator which now also has full
  928. precision for the mantissa. It does not support any exceptions.
  929. It is very simple, and approximately 3-6 times faster than NWFPE.
  930. It should be sufficient for most programs. It may be not suitable
  931. for scientific calculations, but you have to check this for yourself.
  932. If you do not feel you need a faster FP emulation you should better
  933. choose NWFPE.
  934. config VFP
  935. bool "VFP-format floating point maths"
  936. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  937. help
  938. Say Y to include VFP support code in the kernel. This is needed
  939. if your hardware includes a VFP unit.
  940. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  941. release notes and additional status information.
  942. Say N if your target does not have VFP hardware.
  943. config VFPv3
  944. bool
  945. depends on VFP
  946. default y if CPU_V7
  947. config NEON
  948. bool "Advanced SIMD (NEON) Extension support"
  949. depends on VFPv3 && CPU_V7
  950. help
  951. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  952. Extension.
  953. endmenu
  954. menu "Userspace binary formats"
  955. source "fs/Kconfig.binfmt"
  956. config ARTHUR
  957. tristate "RISC OS personality"
  958. depends on !AEABI
  959. help
  960. Say Y here to include the kernel code necessary if you want to run
  961. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  962. experimental; if this sounds frightening, say N and sleep in peace.
  963. You can also say M here to compile this support as a module (which
  964. will be called arthur).
  965. endmenu
  966. menu "Power management options"
  967. source "kernel/power/Kconfig"
  968. config ARCH_SUSPEND_POSSIBLE
  969. def_bool y
  970. endmenu
  971. source "net/Kconfig"
  972. menu "Device Drivers"
  973. source "drivers/base/Kconfig"
  974. source "drivers/connector/Kconfig"
  975. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  976. source "drivers/mtd/Kconfig"
  977. endif
  978. source "drivers/parport/Kconfig"
  979. source "drivers/pnp/Kconfig"
  980. source "drivers/block/Kconfig"
  981. # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
  982. source "drivers/misc/Kconfig"
  983. source "drivers/ide/Kconfig"
  984. source "drivers/scsi/Kconfig"
  985. source "drivers/ata/Kconfig"
  986. source "drivers/md/Kconfig"
  987. source "drivers/message/fusion/Kconfig"
  988. source "drivers/ieee1394/Kconfig"
  989. source "drivers/message/i2o/Kconfig"
  990. source "drivers/net/Kconfig"
  991. source "drivers/isdn/Kconfig"
  992. # input before char - char/joystick depends on it. As does USB.
  993. source "drivers/input/Kconfig"
  994. source "drivers/char/Kconfig"
  995. source "drivers/i2c/Kconfig"
  996. source "drivers/spi/Kconfig"
  997. source "drivers/gpio/Kconfig"
  998. source "drivers/w1/Kconfig"
  999. source "drivers/power/Kconfig"
  1000. source "drivers/hwmon/Kconfig"
  1001. source "drivers/thermal/Kconfig"
  1002. source "drivers/watchdog/Kconfig"
  1003. source "drivers/ssb/Kconfig"
  1004. #source "drivers/l3/Kconfig"
  1005. source "drivers/mfd/Kconfig"
  1006. source "drivers/media/Kconfig"
  1007. source "drivers/video/Kconfig"
  1008. source "sound/Kconfig"
  1009. source "drivers/hid/Kconfig"
  1010. source "drivers/usb/Kconfig"
  1011. source "drivers/uwb/Kconfig"
  1012. source "drivers/mmc/Kconfig"
  1013. source "drivers/memstick/Kconfig"
  1014. source "drivers/accessibility/Kconfig"
  1015. source "drivers/leds/Kconfig"
  1016. source "drivers/rtc/Kconfig"
  1017. source "drivers/dma/Kconfig"
  1018. source "drivers/dca/Kconfig"
  1019. source "drivers/auxdisplay/Kconfig"
  1020. source "drivers/regulator/Kconfig"
  1021. source "drivers/uio/Kconfig"
  1022. endmenu
  1023. source "fs/Kconfig"
  1024. source "arch/arm/Kconfig.debug"
  1025. source "security/Kconfig"
  1026. source "crypto/Kconfig"
  1027. source "lib/Kconfig"