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 ICST525
  166. help
  167. Support for ARM's Integrator platform.
  168. config ARCH_REALVIEW
  169. bool "ARM Ltd. RealView family"
  170. select ARM_AMBA
  171. select HAVE_CLK
  172. select ICST307
  173. select GENERIC_TIME
  174. select GENERIC_CLOCKEVENTS
  175. help
  176. This enables support for ARM Ltd RealView boards.
  177. config ARCH_VERSATILE
  178. bool "ARM Ltd. Versatile family"
  179. select ARM_AMBA
  180. select ARM_VIC
  181. select HAVE_CLK
  182. select ICST307
  183. select GENERIC_TIME
  184. select GENERIC_CLOCKEVENTS
  185. help
  186. This enables support for ARM Ltd Versatile board.
  187. config ARCH_AT91
  188. bool "Atmel AT91"
  189. select GENERIC_GPIO
  190. select HAVE_CLK
  191. help
  192. This enables support for systems based on the Atmel AT91RM9200,
  193. AT91SAM9 and AT91CAP9 processors.
  194. config ARCH_CLPS7500
  195. bool "Cirrus CL-PS7500FE"
  196. select CPU_ARM710
  197. select TIMER_ACORN
  198. select ISA
  199. select NO_IOPORT
  200. select ARCH_SPARSEMEM_ENABLE
  201. help
  202. Support for the Cirrus Logic PS7500FE system-on-a-chip.
  203. config ARCH_CLPS711X
  204. bool "Cirrus Logic CLPS711x/EP721x-based"
  205. select CPU_ARM720T
  206. help
  207. Support for Cirrus Logic 711x/721x based boards.
  208. config ARCH_EBSA110
  209. bool "EBSA-110"
  210. select CPU_SA110
  211. select ISA
  212. select NO_IOPORT
  213. help
  214. This is an evaluation board for the StrongARM processor available
  215. from Digital. It has limited hardware on-board, including an
  216. Ethernet interface, two PCMCIA sockets, two serial ports and a
  217. parallel port.
  218. config ARCH_EP93XX
  219. bool "EP93xx-based"
  220. select CPU_ARM920T
  221. select ARM_AMBA
  222. select ARM_VIC
  223. select GENERIC_GPIO
  224. select HAVE_CLK
  225. select ARCH_REQUIRE_GPIOLIB
  226. help
  227. This enables support for the Cirrus EP93xx series of CPUs.
  228. config ARCH_FOOTBRIDGE
  229. bool "FootBridge"
  230. select CPU_SA110
  231. select FOOTBRIDGE
  232. help
  233. Support for systems based on the DC21285 companion chip
  234. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  235. config ARCH_NETX
  236. bool "Hilscher NetX based"
  237. select CPU_ARM926T
  238. select ARM_VIC
  239. help
  240. This enables support for systems based on the Hilscher NetX Soc
  241. config ARCH_H720X
  242. bool "Hynix HMS720x-based"
  243. select CPU_ARM720T
  244. select ISA_DMA_API
  245. help
  246. This enables support for systems based on the Hynix HMS720x
  247. config ARCH_IMX
  248. bool "IMX"
  249. select CPU_ARM920T
  250. select GENERIC_GPIO
  251. select GENERIC_TIME
  252. select GENERIC_CLOCKEVENTS
  253. help
  254. Support for Motorola's i.MX family of processors (MX1, MXL).
  255. config ARCH_IOP13XX
  256. bool "IOP13xx-based"
  257. depends on MMU
  258. select CPU_XSC3
  259. select PLAT_IOP
  260. select PCI
  261. select ARCH_SUPPORTS_MSI
  262. select VMSPLIT_1G
  263. help
  264. Support for Intel's IOP13XX (XScale) family of processors.
  265. config ARCH_IOP32X
  266. bool "IOP32x-based"
  267. depends on MMU
  268. select CPU_XSCALE
  269. select PLAT_IOP
  270. select PCI
  271. select GENERIC_GPIO
  272. select ARCH_REQUIRE_GPIOLIB
  273. help
  274. Support for Intel's 80219 and IOP32X (XScale) family of
  275. processors.
  276. config ARCH_IOP33X
  277. bool "IOP33x-based"
  278. depends on MMU
  279. select CPU_XSCALE
  280. select PLAT_IOP
  281. select PCI
  282. select GENERIC_GPIO
  283. select ARCH_REQUIRE_GPIOLIB
  284. help
  285. Support for Intel's IOP33X (XScale) family of processors.
  286. config ARCH_IXP23XX
  287. bool "IXP23XX-based"
  288. depends on MMU
  289. select CPU_XSC3
  290. select PCI
  291. help
  292. Support for Intel's IXP23xx (XScale) family of processors.
  293. config ARCH_IXP2000
  294. bool "IXP2400/2800-based"
  295. depends on MMU
  296. select CPU_XSCALE
  297. select PCI
  298. help
  299. Support for Intel's IXP2400/2800 (XScale) family of processors.
  300. config ARCH_IXP4XX
  301. bool "IXP4xx-based"
  302. depends on MMU
  303. select CPU_XSCALE
  304. select GENERIC_GPIO
  305. select GENERIC_TIME
  306. select GENERIC_CLOCKEVENTS
  307. select DMABOUNCE if PCI
  308. help
  309. Support for Intel's IXP4XX (XScale) family of processors.
  310. config ARCH_L7200
  311. bool "LinkUp-L7200"
  312. select CPU_ARM720T
  313. select FIQ
  314. help
  315. Say Y here if you intend to run this kernel on a LinkUp Systems
  316. L7200 Software Development Board which uses an ARM720T processor.
  317. Information on this board can be obtained at:
  318. <http://www.linkupsys.com/>
  319. If you have any questions or comments about the Linux kernel port
  320. to this board, send e-mail to <sjhill@cotw.com>.
  321. config ARCH_KIRKWOOD
  322. bool "Marvell Kirkwood"
  323. select CPU_FEROCEON
  324. select PCI
  325. select GENERIC_TIME
  326. select GENERIC_CLOCKEVENTS
  327. select PLAT_ORION
  328. help
  329. Support for the following Marvell Kirkwood series SoCs:
  330. 88F6180, 88F6192 and 88F6281.
  331. config ARCH_KS8695
  332. bool "Micrel/Kendin KS8695"
  333. select CPU_ARM922T
  334. select GENERIC_GPIO
  335. help
  336. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  337. System-on-Chip devices.
  338. config ARCH_NS9XXX
  339. bool "NetSilicon NS9xxx"
  340. select CPU_ARM926T
  341. select GENERIC_GPIO
  342. select GENERIC_TIME
  343. select GENERIC_CLOCKEVENTS
  344. select HAVE_CLK
  345. help
  346. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  347. System.
  348. <http://www.digi.com/products/microprocessors/index.jsp>
  349. config ARCH_LOKI
  350. bool "Marvell Loki (88RC8480)"
  351. select CPU_FEROCEON
  352. select GENERIC_TIME
  353. select GENERIC_CLOCKEVENTS
  354. select PLAT_ORION
  355. help
  356. Support for the Marvell Loki (88RC8480) SoC.
  357. config ARCH_MV78XX0
  358. bool "Marvell MV78xx0"
  359. select CPU_FEROCEON
  360. select PCI
  361. select GENERIC_TIME
  362. select GENERIC_CLOCKEVENTS
  363. select PLAT_ORION
  364. help
  365. Support for the following Marvell MV78xx0 series SoCs:
  366. MV781x0, MV782x0.
  367. config ARCH_MXC
  368. bool "Freescale MXC/iMX-based"
  369. select GENERIC_TIME
  370. select GENERIC_CLOCKEVENTS
  371. select ARCH_MTD_XIP
  372. select GENERIC_GPIO
  373. select ARCH_REQUIRE_GPIOLIB
  374. help
  375. Support for Freescale MXC/iMX-based family of processors
  376. config ARCH_ORION5X
  377. bool "Marvell Orion"
  378. depends on MMU
  379. select CPU_FEROCEON
  380. select PCI
  381. select GENERIC_GPIO
  382. select GENERIC_TIME
  383. select GENERIC_CLOCKEVENTS
  384. select PLAT_ORION
  385. help
  386. Support for the following Marvell Orion 5x series SoCs:
  387. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  388. Orion-2 (5281), Orion-1-90 (6183).
  389. config ARCH_PNX4008
  390. bool "Philips Nexperia PNX4008 Mobile"
  391. select CPU_ARM926T
  392. select HAVE_CLK
  393. help
  394. This enables support for Philips PNX4008 mobile platform.
  395. config ARCH_PXA
  396. bool "PXA2xx/PXA3xx-based"
  397. depends on MMU
  398. select ARCH_MTD_XIP
  399. select GENERIC_GPIO
  400. select HAVE_CLK
  401. select ARCH_REQUIRE_GPIOLIB
  402. select GENERIC_TIME
  403. select GENERIC_CLOCKEVENTS
  404. select TICK_ONESHOT
  405. help
  406. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  407. config ARCH_RPC
  408. bool "RiscPC"
  409. select ARCH_ACORN
  410. select FIQ
  411. select TIMER_ACORN
  412. select ARCH_MAY_HAVE_PC_FDC
  413. select HAVE_PATA_PLATFORM
  414. select ISA_DMA_API
  415. select NO_IOPORT
  416. select ARCH_SPARSEMEM_ENABLE
  417. help
  418. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  419. CD-ROM interface, serial and parallel port, and the floppy drive.
  420. config ARCH_SA1100
  421. bool "SA1100-based"
  422. select CPU_SA1100
  423. select ISA
  424. select ARCH_SPARSEMEM_ENABLE
  425. select ARCH_MTD_XIP
  426. select GENERIC_GPIO
  427. select GENERIC_TIME
  428. select GENERIC_CLOCKEVENTS
  429. select HAVE_CLK
  430. select TICK_ONESHOT
  431. select ARCH_REQUIRE_GPIOLIB
  432. help
  433. Support for StrongARM 11x0 based boards.
  434. config ARCH_S3C2410
  435. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  436. select GENERIC_GPIO
  437. select HAVE_CLK
  438. help
  439. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  440. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  441. the Samsung SMDK2410 development board (and derivatives).
  442. config ARCH_SHARK
  443. bool "Shark"
  444. select CPU_SA110
  445. select ISA
  446. select ISA_DMA
  447. select ZONE_DMA
  448. select PCI
  449. help
  450. Support for the StrongARM based Digital DNARD machine, also known
  451. as "Shark" (<http://www.shark-linux.de/shark.html>).
  452. config ARCH_LH7A40X
  453. bool "Sharp LH7A40X"
  454. select CPU_ARM922T
  455. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  456. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  457. help
  458. Say Y here for systems based on one of the Sharp LH7A40X
  459. System on a Chip processors. These CPUs include an ARM922T
  460. core with a wide array of integrated devices for
  461. hand-held and low-power applications.
  462. config ARCH_DAVINCI
  463. bool "TI DaVinci"
  464. select CPU_ARM926T
  465. select GENERIC_TIME
  466. select GENERIC_CLOCKEVENTS
  467. select GENERIC_GPIO
  468. select ARCH_REQUIRE_GPIOLIB
  469. select HAVE_CLK
  470. select ZONE_DMA
  471. help
  472. Support for TI's DaVinci platform.
  473. config ARCH_OMAP
  474. bool "TI OMAP"
  475. select GENERIC_GPIO
  476. select HAVE_CLK
  477. select ARCH_REQUIRE_GPIOLIB
  478. select GENERIC_TIME
  479. select GENERIC_CLOCKEVENTS
  480. help
  481. Support for TI's OMAP platform (OMAP1 and OMAP2).
  482. config ARCH_MSM
  483. bool "Qualcomm MSM"
  484. select CPU_V6
  485. select GENERIC_TIME
  486. select GENERIC_CLOCKEVENTS
  487. help
  488. Support for Qualcomm MSM7K based systems. This runs on the ARM11
  489. apps processor of the MSM7K and depends on a shared memory
  490. interface to the ARM9 modem processor which runs the baseband stack
  491. and controls some vital subsystems (clock and power control, etc).
  492. endchoice
  493. source "arch/arm/mach-clps711x/Kconfig"
  494. source "arch/arm/mach-ep93xx/Kconfig"
  495. source "arch/arm/mach-footbridge/Kconfig"
  496. source "arch/arm/mach-integrator/Kconfig"
  497. source "arch/arm/mach-iop32x/Kconfig"
  498. source "arch/arm/mach-iop33x/Kconfig"
  499. source "arch/arm/mach-iop13xx/Kconfig"
  500. source "arch/arm/mach-ixp4xx/Kconfig"
  501. source "arch/arm/mach-ixp2000/Kconfig"
  502. source "arch/arm/mach-ixp23xx/Kconfig"
  503. source "arch/arm/mach-loki/Kconfig"
  504. source "arch/arm/mach-mv78xx0/Kconfig"
  505. source "arch/arm/mach-pxa/Kconfig"
  506. source "arch/arm/mach-sa1100/Kconfig"
  507. source "arch/arm/plat-omap/Kconfig"
  508. source "arch/arm/mach-omap1/Kconfig"
  509. source "arch/arm/mach-omap2/Kconfig"
  510. source "arch/arm/mach-orion5x/Kconfig"
  511. source "arch/arm/mach-kirkwood/Kconfig"
  512. source "arch/arm/plat-s3c24xx/Kconfig"
  513. source "arch/arm/plat-s3c/Kconfig"
  514. if ARCH_S3C2410
  515. source "arch/arm/mach-s3c2400/Kconfig"
  516. source "arch/arm/mach-s3c2410/Kconfig"
  517. source "arch/arm/mach-s3c2412/Kconfig"
  518. source "arch/arm/mach-s3c2440/Kconfig"
  519. source "arch/arm/mach-s3c2442/Kconfig"
  520. source "arch/arm/mach-s3c2443/Kconfig"
  521. endif
  522. source "arch/arm/mach-lh7a40x/Kconfig"
  523. source "arch/arm/mach-imx/Kconfig"
  524. source "arch/arm/mach-h720x/Kconfig"
  525. source "arch/arm/mach-versatile/Kconfig"
  526. source "arch/arm/mach-aaec2000/Kconfig"
  527. source "arch/arm/mach-realview/Kconfig"
  528. source "arch/arm/mach-at91/Kconfig"
  529. source "arch/arm/plat-mxc/Kconfig"
  530. source "arch/arm/mach-netx/Kconfig"
  531. source "arch/arm/mach-ns9xxx/Kconfig"
  532. source "arch/arm/mach-davinci/Kconfig"
  533. source "arch/arm/mach-ks8695/Kconfig"
  534. source "arch/arm/mach-msm/Kconfig"
  535. # Definitions to make life easier
  536. config ARCH_ACORN
  537. bool
  538. config PLAT_IOP
  539. bool
  540. config PLAT_ORION
  541. bool
  542. source arch/arm/mm/Kconfig
  543. config IWMMXT
  544. bool "Enable iWMMXt support"
  545. depends on CPU_XSCALE || CPU_XSC3
  546. default y if PXA27x || PXA3xx
  547. help
  548. Enable support for iWMMXt context switching at run time if
  549. running on a CPU that supports it.
  550. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  551. config XSCALE_PMU
  552. bool
  553. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  554. default y
  555. if !MMU
  556. source "arch/arm/Kconfig-nommu"
  557. endif
  558. endmenu
  559. source "arch/arm/common/Kconfig"
  560. config FORCE_MAX_ZONEORDER
  561. int
  562. depends on SA1111
  563. default "9"
  564. menu "Bus support"
  565. config ARM_AMBA
  566. bool
  567. config ISA
  568. bool
  569. help
  570. Find out whether you have ISA slots on your motherboard. ISA is the
  571. name of a bus system, i.e. the way the CPU talks to the other stuff
  572. inside your box. Other bus systems are PCI, EISA, MicroChannel
  573. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  574. newer boards don't support it. If you have ISA, say Y, otherwise N.
  575. # Select ISA DMA controller support
  576. config ISA_DMA
  577. bool
  578. select ISA_DMA_API
  579. # Select ISA DMA interface
  580. config ISA_DMA_API
  581. bool
  582. config PCI
  583. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  584. help
  585. Find out whether you have a PCI motherboard. PCI is the name of a
  586. bus system, i.e. the way the CPU talks to the other stuff inside
  587. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  588. VESA. If you have PCI, say Y, otherwise N.
  589. config PCI_SYSCALL
  590. def_bool PCI
  591. # Select the host bridge type
  592. config PCI_HOST_VIA82C505
  593. bool
  594. depends on PCI && ARCH_SHARK
  595. default y
  596. config PCI_HOST_ITE8152
  597. bool
  598. depends on PCI && MACH_ARMCORE
  599. default y
  600. select DMABOUNCE
  601. source "drivers/pci/Kconfig"
  602. source "drivers/pcmcia/Kconfig"
  603. endmenu
  604. menu "Kernel Features"
  605. source "kernel/time/Kconfig"
  606. config SMP
  607. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  608. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
  609. select USE_GENERIC_SMP_HELPERS
  610. help
  611. This enables support for systems with more than one CPU. If you have
  612. a system with only one CPU, like most personal computers, say N. If
  613. you have a system with more than one CPU, say Y.
  614. If you say N here, the kernel will run on single and multiprocessor
  615. machines, but will use only one CPU of a multiprocessor machine. If
  616. you say Y here, the kernel will run on many, but not all, single
  617. processor machines. On a single processor machine, the kernel will
  618. run faster if you say N here.
  619. See also <file:Documentation/i386/IO-APIC.txt>,
  620. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  621. <http://www.linuxdoc.org/docs.html#howto>.
  622. If you don't know what to do here, say N.
  623. choice
  624. prompt "Memory split"
  625. default VMSPLIT_3G
  626. help
  627. Select the desired split between kernel and user memory.
  628. If you are not absolutely sure what you are doing, leave this
  629. option alone!
  630. config VMSPLIT_3G
  631. bool "3G/1G user/kernel split"
  632. config VMSPLIT_2G
  633. bool "2G/2G user/kernel split"
  634. config VMSPLIT_1G
  635. bool "1G/3G user/kernel split"
  636. endchoice
  637. config PAGE_OFFSET
  638. hex
  639. default 0x40000000 if VMSPLIT_1G
  640. default 0x80000000 if VMSPLIT_2G
  641. default 0xC0000000
  642. config NR_CPUS
  643. int "Maximum number of CPUs (2-32)"
  644. range 2 32
  645. depends on SMP
  646. default "4"
  647. config HOTPLUG_CPU
  648. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  649. depends on SMP && HOTPLUG && EXPERIMENTAL
  650. help
  651. Say Y here to experiment with turning CPUs off and on. CPUs
  652. can be controlled through /sys/devices/system/cpu.
  653. config LOCAL_TIMERS
  654. bool "Use local timer interrupts"
  655. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
  656. default y
  657. help
  658. Enable support for local timers on SMP platforms, rather then the
  659. legacy IPI broadcast method. Local timers allows the system
  660. accounting to be spread across the timer interval, preventing a
  661. "thundering herd" at every timer tick.
  662. config PREEMPT
  663. bool "Preemptible Kernel (EXPERIMENTAL)"
  664. depends on EXPERIMENTAL
  665. help
  666. This option reduces the latency of the kernel when reacting to
  667. real-time or interactive events by allowing a low priority process to
  668. be preempted even if it is in kernel mode executing a system call.
  669. This allows applications to run more reliably even when the system is
  670. under load.
  671. Say Y here if you are building a kernel for a desktop, embedded
  672. or real-time system. Say N if you are unsure.
  673. config HZ
  674. int
  675. default 128 if ARCH_L7200
  676. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  677. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  678. default AT91_TIMER_HZ if ARCH_AT91
  679. default 100
  680. config AEABI
  681. bool "Use the ARM EABI to compile the kernel"
  682. help
  683. This option allows for the kernel to be compiled using the latest
  684. ARM ABI (aka EABI). This is only useful if you are using a user
  685. space environment that is also compiled with EABI.
  686. Since there are major incompatibilities between the legacy ABI and
  687. EABI, especially with regard to structure member alignment, this
  688. option also changes the kernel syscall calling convention to
  689. disambiguate both ABIs and allow for backward compatibility support
  690. (selected with CONFIG_OABI_COMPAT).
  691. To use this you need GCC version 4.0.0 or later.
  692. config OABI_COMPAT
  693. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  694. depends on AEABI && EXPERIMENTAL
  695. default y
  696. help
  697. This option preserves the old syscall interface along with the
  698. new (ARM EABI) one. It also provides a compatibility layer to
  699. intercept syscalls that have structure arguments which layout
  700. in memory differs between the legacy ABI and the new ARM EABI
  701. (only for non "thumb" binaries). This option adds a tiny
  702. overhead to all syscalls and produces a slightly larger kernel.
  703. If you know you'll be using only pure EABI user space then you
  704. can say N here. If this option is not selected and you attempt
  705. to execute a legacy ABI binary then the result will be
  706. UNPREDICTABLE (in fact it can be predicted that it won't work
  707. at all). If in doubt say Y.
  708. config ARCH_FLATMEM_HAS_HOLES
  709. bool
  710. default y
  711. depends on FLATMEM
  712. # Discontigmem is deprecated
  713. config ARCH_DISCONTIGMEM_ENABLE
  714. bool
  715. config ARCH_SPARSEMEM_ENABLE
  716. bool
  717. config ARCH_SPARSEMEM_DEFAULT
  718. def_bool ARCH_SPARSEMEM_ENABLE
  719. config ARCH_SELECT_MEMORY_MODEL
  720. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  721. config NODES_SHIFT
  722. int
  723. default "4" if ARCH_LH7A40X
  724. default "2"
  725. depends on NEED_MULTIPLE_NODES
  726. source "mm/Kconfig"
  727. config LEDS
  728. bool "Timer and CPU usage LEDs"
  729. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  730. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  731. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  732. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  733. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  734. ARCH_AT91 || ARCH_DAVINCI || \
  735. ARCH_KS8695 || MACH_RD88F5182
  736. help
  737. If you say Y here, the LEDs on your machine will be used
  738. to provide useful information about your current system status.
  739. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  740. be able to select which LEDs are active using the options below. If
  741. you are compiling a kernel for the EBSA-110 or the LART however, the
  742. red LED will simply flash regularly to indicate that the system is
  743. still functional. It is safe to say Y here if you have a CATS
  744. system, but the driver will do nothing.
  745. config LEDS_TIMER
  746. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  747. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  748. || MACH_OMAP_PERSEUS2
  749. depends on LEDS
  750. depends on !GENERIC_CLOCKEVENTS
  751. default y if ARCH_EBSA110
  752. help
  753. If you say Y here, one of the system LEDs (the green one on the
  754. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  755. will flash regularly to indicate that the system is still
  756. operational. This is mainly useful to kernel hackers who are
  757. debugging unstable kernels.
  758. The LART uses the same LED for both Timer LED and CPU usage LED
  759. functions. You may choose to use both, but the Timer LED function
  760. will overrule the CPU usage LED.
  761. config LEDS_CPU
  762. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  763. !ARCH_OMAP) \
  764. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  765. || MACH_OMAP_PERSEUS2
  766. depends on LEDS
  767. help
  768. If you say Y here, the red LED will be used to give a good real
  769. time indication of CPU usage, by lighting whenever the idle task
  770. is not currently executing.
  771. The LART uses the same LED for both Timer LED and CPU usage LED
  772. functions. You may choose to use both, but the Timer LED function
  773. will overrule the CPU usage LED.
  774. config ALIGNMENT_TRAP
  775. bool
  776. depends on CPU_CP15_MMU
  777. default y if !ARCH_EBSA110
  778. help
  779. ARM processors cannot fetch/store information which is not
  780. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  781. address divisible by 4. On 32-bit ARM processors, these non-aligned
  782. fetch/store instructions will be emulated in software if you say
  783. here, which has a severe performance impact. This is necessary for
  784. correct operation of some network protocols. With an IP-only
  785. configuration it is safe to say N, otherwise say Y.
  786. endmenu
  787. menu "Boot options"
  788. # Compressed boot loader in ROM. Yes, we really want to ask about
  789. # TEXT and BSS so we preserve their values in the config files.
  790. config ZBOOT_ROM_TEXT
  791. hex "Compressed ROM boot loader base address"
  792. default "0"
  793. help
  794. The physical address at which the ROM-able zImage is to be
  795. placed in the target. Platforms which normally make use of
  796. ROM-able zImage formats normally set this to a suitable
  797. value in their defconfig file.
  798. If ZBOOT_ROM is not enabled, this has no effect.
  799. config ZBOOT_ROM_BSS
  800. hex "Compressed ROM boot loader BSS address"
  801. default "0"
  802. help
  803. The base address of an area of read/write memory in the target
  804. for the ROM-able zImage which must be available while the
  805. decompressor is running. It must be large enough to hold the
  806. entire decompressed kernel plus an additional 128 KiB.
  807. Platforms which normally make use of ROM-able zImage formats
  808. normally set this to a suitable value in their defconfig file.
  809. If ZBOOT_ROM is not enabled, this has no effect.
  810. config ZBOOT_ROM
  811. bool "Compressed boot loader in ROM/flash"
  812. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  813. help
  814. Say Y here if you intend to execute your compressed kernel image
  815. (zImage) directly from ROM or flash. If unsure, say N.
  816. config CMDLINE
  817. string "Default kernel command string"
  818. default ""
  819. help
  820. On some architectures (EBSA110 and CATS), there is currently no way
  821. for the boot loader to pass arguments to the kernel. For these
  822. architectures, you should supply some command-line options at build
  823. time by entering them here. As a minimum, you should specify the
  824. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  825. config XIP_KERNEL
  826. bool "Kernel Execute-In-Place from ROM"
  827. depends on !ZBOOT_ROM
  828. help
  829. Execute-In-Place allows the kernel to run from non-volatile storage
  830. directly addressable by the CPU, such as NOR flash. This saves RAM
  831. space since the text section of the kernel is not loaded from flash
  832. to RAM. Read-write sections, such as the data section and stack,
  833. are still copied to RAM. The XIP kernel is not compressed since
  834. it has to run directly from flash, so it will take more space to
  835. store it. The flash address used to link the kernel object files,
  836. and for storing it, is configuration dependent. Therefore, if you
  837. say Y here, you must know the proper physical address where to
  838. store the kernel image depending on your own flash memory usage.
  839. Also note that the make target becomes "make xipImage" rather than
  840. "make zImage" or "make Image". The final kernel binary to put in
  841. ROM memory will be arch/arm/boot/xipImage.
  842. If unsure, say N.
  843. config XIP_PHYS_ADDR
  844. hex "XIP Kernel Physical Location"
  845. depends on XIP_KERNEL
  846. default "0x00080000"
  847. help
  848. This is the physical address in your flash memory the kernel will
  849. be linked for and stored to. This address is dependent on your
  850. own flash usage.
  851. config KEXEC
  852. bool "Kexec system call (EXPERIMENTAL)"
  853. depends on EXPERIMENTAL
  854. help
  855. kexec is a system call that implements the ability to shutdown your
  856. current kernel, and to start another kernel. It is like a reboot
  857. but it is independent of the system firmware. And like a reboot
  858. you can start any kernel with it, not just Linux.
  859. It is an ongoing process to be certain the hardware in a machine
  860. is properly shutdown, so do not be surprised if this code does not
  861. initially work for you. It may help to enable device hotplugging
  862. support.
  863. config ATAGS_PROC
  864. bool "Export atags in procfs"
  865. depends on KEXEC
  866. default y
  867. help
  868. Should the atags used to boot the kernel be exported in an "atags"
  869. file in procfs. Useful with kexec.
  870. endmenu
  871. menu "CPU Power Management"
  872. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
  873. source "drivers/cpufreq/Kconfig"
  874. config CPU_FREQ_SA1100
  875. bool
  876. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  877. default y
  878. config CPU_FREQ_SA1110
  879. bool
  880. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  881. default y
  882. config CPU_FREQ_INTEGRATOR
  883. tristate "CPUfreq driver for ARM Integrator CPUs"
  884. depends on ARCH_INTEGRATOR && CPU_FREQ
  885. default y
  886. help
  887. This enables the CPUfreq driver for ARM Integrator CPUs.
  888. For details, take a look at <file:Documentation/cpu-freq>.
  889. If in doubt, say Y.
  890. config CPU_FREQ_IMX
  891. tristate "CPUfreq driver for i.MX CPUs"
  892. depends on ARCH_IMX && CPU_FREQ
  893. default n
  894. help
  895. This enables the CPUfreq driver for i.MX CPUs.
  896. If in doubt, say N.
  897. config CPU_FREQ_PXA
  898. bool
  899. depends on CPU_FREQ && ARCH_PXA && PXA25x
  900. default y
  901. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  902. endif
  903. source "drivers/cpuidle/Kconfig"
  904. endmenu
  905. menu "Floating point emulation"
  906. comment "At least one emulation must be selected"
  907. config FPE_NWFPE
  908. bool "NWFPE math emulation"
  909. depends on !AEABI || OABI_COMPAT
  910. ---help---
  911. Say Y to include the NWFPE floating point emulator in the kernel.
  912. This is necessary to run most binaries. Linux does not currently
  913. support floating point hardware so you need to say Y here even if
  914. your machine has an FPA or floating point co-processor podule.
  915. You may say N here if you are going to load the Acorn FPEmulator
  916. early in the bootup.
  917. config FPE_NWFPE_XP
  918. bool "Support extended precision"
  919. depends on FPE_NWFPE
  920. help
  921. Say Y to include 80-bit support in the kernel floating-point
  922. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  923. Note that gcc does not generate 80-bit operations by default,
  924. so in most cases this option only enlarges the size of the
  925. floating point emulator without any good reason.
  926. You almost surely want to say N here.
  927. config FPE_FASTFPE
  928. bool "FastFPE math emulation (EXPERIMENTAL)"
  929. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  930. ---help---
  931. Say Y here to include the FAST floating point emulator in the kernel.
  932. This is an experimental much faster emulator which now also has full
  933. precision for the mantissa. It does not support any exceptions.
  934. It is very simple, and approximately 3-6 times faster than NWFPE.
  935. It should be sufficient for most programs. It may be not suitable
  936. for scientific calculations, but you have to check this for yourself.
  937. If you do not feel you need a faster FP emulation you should better
  938. choose NWFPE.
  939. config VFP
  940. bool "VFP-format floating point maths"
  941. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  942. help
  943. Say Y to include VFP support code in the kernel. This is needed
  944. if your hardware includes a VFP unit.
  945. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  946. release notes and additional status information.
  947. Say N if your target does not have VFP hardware.
  948. config VFPv3
  949. bool
  950. depends on VFP
  951. default y if CPU_V7
  952. config NEON
  953. bool "Advanced SIMD (NEON) Extension support"
  954. depends on VFPv3 && CPU_V7
  955. help
  956. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  957. Extension.
  958. endmenu
  959. menu "Userspace binary formats"
  960. source "fs/Kconfig.binfmt"
  961. config ARTHUR
  962. tristate "RISC OS personality"
  963. depends on !AEABI
  964. help
  965. Say Y here to include the kernel code necessary if you want to run
  966. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  967. experimental; if this sounds frightening, say N and sleep in peace.
  968. You can also say M here to compile this support as a module (which
  969. will be called arthur).
  970. endmenu
  971. menu "Power management options"
  972. source "kernel/power/Kconfig"
  973. config ARCH_SUSPEND_POSSIBLE
  974. def_bool y
  975. endmenu
  976. source "net/Kconfig"
  977. menu "Device Drivers"
  978. source "drivers/base/Kconfig"
  979. source "drivers/connector/Kconfig"
  980. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  981. source "drivers/mtd/Kconfig"
  982. endif
  983. source "drivers/parport/Kconfig"
  984. source "drivers/pnp/Kconfig"
  985. source "drivers/block/Kconfig"
  986. # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
  987. source "drivers/misc/Kconfig"
  988. source "drivers/ide/Kconfig"
  989. source "drivers/scsi/Kconfig"
  990. source "drivers/ata/Kconfig"
  991. source "drivers/md/Kconfig"
  992. source "drivers/message/fusion/Kconfig"
  993. source "drivers/ieee1394/Kconfig"
  994. source "drivers/message/i2o/Kconfig"
  995. source "drivers/net/Kconfig"
  996. source "drivers/isdn/Kconfig"
  997. # input before char - char/joystick depends on it. As does USB.
  998. source "drivers/input/Kconfig"
  999. source "drivers/char/Kconfig"
  1000. source "drivers/i2c/Kconfig"
  1001. source "drivers/spi/Kconfig"
  1002. source "drivers/gpio/Kconfig"
  1003. source "drivers/w1/Kconfig"
  1004. source "drivers/power/Kconfig"
  1005. source "drivers/hwmon/Kconfig"
  1006. source "drivers/thermal/Kconfig"
  1007. source "drivers/watchdog/Kconfig"
  1008. source "drivers/ssb/Kconfig"
  1009. #source "drivers/l3/Kconfig"
  1010. source "drivers/mfd/Kconfig"
  1011. source "drivers/media/Kconfig"
  1012. source "drivers/video/Kconfig"
  1013. source "sound/Kconfig"
  1014. source "drivers/hid/Kconfig"
  1015. source "drivers/usb/Kconfig"
  1016. source "drivers/uwb/Kconfig"
  1017. source "drivers/mmc/Kconfig"
  1018. source "drivers/memstick/Kconfig"
  1019. source "drivers/accessibility/Kconfig"
  1020. source "drivers/leds/Kconfig"
  1021. source "drivers/rtc/Kconfig"
  1022. source "drivers/dma/Kconfig"
  1023. source "drivers/dca/Kconfig"
  1024. source "drivers/auxdisplay/Kconfig"
  1025. source "drivers/regulator/Kconfig"
  1026. source "drivers/uio/Kconfig"
  1027. endmenu
  1028. source "fs/Kconfig"
  1029. source "arch/arm/Kconfig.debug"
  1030. source "security/Kconfig"
  1031. source "crypto/Kconfig"
  1032. source "lib/Kconfig"