Kconfig 27 KB

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  1. #
  2. # For a description of the syntax of this configuration file,
  3. # see Documentation/kbuild/kconfig-language.txt.
  4. #
  5. mainmenu "Linux Kernel Configuration"
  6. config ARM
  7. bool
  8. default y
  9. select RTC_LIB
  10. select SYS_SUPPORTS_APM_EMULATION
  11. help
  12. The ARM series is a line of low-power-consumption RISC chip designs
  13. licensed by ARM Ltd and targeted at embedded applications and
  14. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  15. manufactured, but legacy ARM-based PC hardware remains popular in
  16. Europe. There is an ARM Linux project with a web page at
  17. <http://www.arm.linux.org.uk/>.
  18. config SYS_SUPPORTS_APM_EMULATION
  19. bool
  20. config GENERIC_GPIO
  21. bool
  22. default n
  23. config GENERIC_TIME
  24. bool
  25. default n
  26. config MMU
  27. bool
  28. default y
  29. config NO_IOPORT
  30. bool
  31. default n
  32. config EISA
  33. bool
  34. ---help---
  35. The Extended Industry Standard Architecture (EISA) bus was
  36. developed as an open alternative to the IBM MicroChannel bus.
  37. The EISA bus provided some of the features of the IBM MicroChannel
  38. bus while maintaining backward compatibility with cards made for
  39. the older ISA bus. The EISA bus saw limited use between 1988 and
  40. 1995 when it was made obsolete by the PCI bus.
  41. Say Y here if you are building a kernel for an EISA-based machine.
  42. Otherwise, say N.
  43. config SBUS
  44. bool
  45. config MCA
  46. bool
  47. help
  48. MicroChannel Architecture is found in some IBM PS/2 machines and
  49. laptops. It is a bus system similar to PCI or ISA. See
  50. <file:Documentation/mca.txt> (and especially the web page given
  51. there) before attempting to build an MCA bus kernel.
  52. config GENERIC_HARDIRQS
  53. bool
  54. default y
  55. config TRACE_IRQFLAGS_SUPPORT
  56. bool
  57. default y
  58. config HARDIRQS_SW_RESEND
  59. bool
  60. default y
  61. config GENERIC_IRQ_PROBE
  62. bool
  63. default y
  64. config RWSEM_GENERIC_SPINLOCK
  65. bool
  66. default y
  67. config RWSEM_XCHGADD_ALGORITHM
  68. bool
  69. config ARCH_HAS_ILOG2_U32
  70. bool
  71. default n
  72. config ARCH_HAS_ILOG2_U64
  73. bool
  74. default n
  75. config GENERIC_HWEIGHT
  76. bool
  77. default y
  78. config GENERIC_CALIBRATE_DELAY
  79. bool
  80. default y
  81. config GENERIC_BUST_SPINLOCK
  82. bool
  83. config ARCH_MAY_HAVE_PC_FDC
  84. bool
  85. config ZONE_DMA
  86. bool
  87. default y
  88. config GENERIC_ISA_DMA
  89. bool
  90. config FIQ
  91. bool
  92. config ARCH_MTD_XIP
  93. bool
  94. config VECTORS_BASE
  95. hex
  96. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  97. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  98. default 0x00000000
  99. help
  100. The base address of exception vectors.
  101. source "init/Kconfig"
  102. menu "System Type"
  103. choice
  104. prompt "ARM system type"
  105. default ARCH_VERSATILE
  106. config ARCH_AAEC2000
  107. bool "Agilent AAEC-2000 based"
  108. select ARM_AMBA
  109. help
  110. This enables support for systems based on the Agilent AAEC-2000
  111. config ARCH_INTEGRATOR
  112. bool "ARM Ltd. Integrator family"
  113. select ARM_AMBA
  114. select ICST525
  115. help
  116. Support for ARM's Integrator platform.
  117. config ARCH_REALVIEW
  118. bool "ARM Ltd. RealView family"
  119. select ARM_AMBA
  120. select ICST307
  121. help
  122. This enables support for ARM Ltd RealView boards.
  123. config ARCH_VERSATILE
  124. bool "ARM Ltd. Versatile family"
  125. select ARM_AMBA
  126. select ARM_VIC
  127. select ICST307
  128. help
  129. This enables support for ARM Ltd Versatile board.
  130. config ARCH_AT91
  131. bool "Atmel AT91"
  132. select GENERIC_GPIO
  133. help
  134. This enables support for systems based on the Atmel AT91RM9200
  135. and AT91SAM9xxx processors.
  136. config ARCH_CLPS7500
  137. bool "Cirrus CL-PS7500FE"
  138. select TIMER_ACORN
  139. select ISA
  140. select NO_IOPORT
  141. help
  142. Support for the Cirrus Logic PS7500FE system-on-a-chip.
  143. config ARCH_CLPS711X
  144. bool "Cirrus Logic CLPS711x/EP721x-based"
  145. help
  146. Support for Cirrus Logic 711x/721x based boards.
  147. config ARCH_CO285
  148. bool "Co-EBSA285"
  149. select FOOTBRIDGE
  150. select FOOTBRIDGE_ADDIN
  151. help
  152. Support for Intel's EBSA285 companion chip.
  153. config ARCH_EBSA110
  154. bool "EBSA-110"
  155. select ISA
  156. select NO_IOPORT
  157. help
  158. This is an evaluation board for the StrongARM processor available
  159. from Digital. It has limited hardware on-board, including an
  160. Ethernet interface, two PCMCIA sockets, two serial ports and a
  161. parallel port.
  162. config ARCH_EP93XX
  163. bool "EP93xx-based"
  164. select ARM_AMBA
  165. select ARM_VIC
  166. help
  167. This enables support for the Cirrus EP93xx series of CPUs.
  168. config ARCH_FOOTBRIDGE
  169. bool "FootBridge"
  170. select FOOTBRIDGE
  171. help
  172. Support for systems based on the DC21285 companion chip
  173. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  174. config ARCH_NETX
  175. bool "Hilscher NetX based"
  176. select ARM_VIC
  177. help
  178. This enables support for systems based on the Hilscher NetX Soc
  179. config ARCH_H720X
  180. bool "Hynix HMS720x-based"
  181. select ISA_DMA_API
  182. help
  183. This enables support for systems based on the Hynix HMS720x
  184. config ARCH_IMX
  185. bool "IMX"
  186. help
  187. Support for Motorola's i.MX family of processors (MX1, MXL).
  188. config ARCH_IOP32X
  189. bool "IOP32x-based"
  190. depends on MMU
  191. select PLAT_IOP
  192. select PCI
  193. help
  194. Support for Intel's 80219 and IOP32X (XScale) family of
  195. processors.
  196. config ARCH_IOP33X
  197. bool "IOP33x-based"
  198. depends on MMU
  199. select PLAT_IOP
  200. select PCI
  201. help
  202. Support for Intel's IOP33X (XScale) family of processors.
  203. config ARCH_IOP13XX
  204. bool "IOP13xx-based"
  205. depends on MMU
  206. select PLAT_IOP
  207. select PCI
  208. help
  209. Support for Intel's IOP13XX (XScale) family of processors.
  210. config ARCH_IXP4XX
  211. bool "IXP4xx-based"
  212. depends on MMU
  213. select GENERIC_TIME
  214. help
  215. Support for Intel's IXP4XX (XScale) family of processors.
  216. config ARCH_IXP2000
  217. bool "IXP2400/2800-based"
  218. depends on MMU
  219. select PCI
  220. help
  221. Support for Intel's IXP2400/2800 (XScale) family of processors.
  222. config ARCH_IXP23XX
  223. bool "IXP23XX-based"
  224. depends on MMU
  225. select PCI
  226. help
  227. Support for Intel's IXP23xx (XScale) family of processors.
  228. config ARCH_L7200
  229. bool "LinkUp-L7200"
  230. select FIQ
  231. help
  232. Say Y here if you intend to run this kernel on a LinkUp Systems
  233. L7200 Software Development Board which uses an ARM720T processor.
  234. Information on this board can be obtained at:
  235. <http://www.linkupsys.com/>
  236. If you have any questions or comments about the Linux kernel port
  237. to this board, send e-mail to <sjhill@cotw.com>.
  238. config ARCH_NS9XXX
  239. bool "NetSilicon NS9xxx"
  240. help
  241. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  242. System.
  243. <http://www.digi.com/products/microprocessors/index.jsp>
  244. config ARCH_PNX4008
  245. bool "Philips Nexperia PNX4008 Mobile"
  246. help
  247. This enables support for Philips PNX4008 mobile platform.
  248. config ARCH_PXA
  249. bool "PXA2xx-based"
  250. depends on MMU
  251. select ARCH_MTD_XIP
  252. select GENERIC_GPIO
  253. select GENERIC_TIME
  254. help
  255. Support for Intel's PXA2XX processor line.
  256. config ARCH_RPC
  257. bool "RiscPC"
  258. select ARCH_ACORN
  259. select FIQ
  260. select TIMER_ACORN
  261. select ARCH_MAY_HAVE_PC_FDC
  262. select ISA_DMA_API
  263. select NO_IOPORT
  264. help
  265. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  266. CD-ROM interface, serial and parallel port, and the floppy drive.
  267. config ARCH_SA1100
  268. bool "SA1100-based"
  269. select ISA
  270. select ARCH_DISCONTIGMEM_ENABLE
  271. select ARCH_MTD_XIP
  272. select GENERIC_GPIO
  273. help
  274. Support for StrongARM 11x0 based boards.
  275. config ARCH_S3C2410
  276. bool "Samsung S3C24xx, S3C64xx"
  277. select GENERIC_GPIO
  278. select ISA
  279. help
  280. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  281. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  282. the Samsung SMDK2410 development board (and derivatives).
  283. config ARCH_SHARK
  284. bool "Shark"
  285. select ISA
  286. select ISA_DMA
  287. select PCI
  288. help
  289. Support for the StrongARM based Digital DNARD machine, also known
  290. as "Shark" (<http://www.shark-linux.de/shark.html>).
  291. config ARCH_LH7A40X
  292. bool "Sharp LH7A40X"
  293. help
  294. Say Y here for systems based on one of the Sharp LH7A40X
  295. System on a Chip processors. These CPUs include an ARM922T
  296. core with a wide array of integrated devices for
  297. hand-held and low-power applications.
  298. config ARCH_OMAP
  299. bool "TI OMAP"
  300. select GENERIC_GPIO
  301. help
  302. Support for TI's OMAP platform (OMAP1 and OMAP2).
  303. endchoice
  304. source "arch/arm/mach-clps711x/Kconfig"
  305. source "arch/arm/mach-ep93xx/Kconfig"
  306. source "arch/arm/mach-footbridge/Kconfig"
  307. source "arch/arm/mach-integrator/Kconfig"
  308. source "arch/arm/mach-iop32x/Kconfig"
  309. source "arch/arm/mach-iop33x/Kconfig"
  310. source "arch/arm/mach-iop13xx/Kconfig"
  311. source "arch/arm/mach-ixp4xx/Kconfig"
  312. source "arch/arm/mach-ixp2000/Kconfig"
  313. source "arch/arm/mach-ixp23xx/Kconfig"
  314. source "arch/arm/mach-pxa/Kconfig"
  315. source "arch/arm/mach-sa1100/Kconfig"
  316. source "arch/arm/plat-omap/Kconfig"
  317. source "arch/arm/mach-omap1/Kconfig"
  318. source "arch/arm/mach-omap2/Kconfig"
  319. source "arch/arm/plat-s3c24xx/Kconfig"
  320. if ARCH_S3C2410
  321. source "arch/arm/mach-s3c2400/Kconfig"
  322. source "arch/arm/mach-s3c2410/Kconfig"
  323. source "arch/arm/mach-s3c2412/Kconfig"
  324. source "arch/arm/mach-s3c2440/Kconfig"
  325. source "arch/arm/mach-s3c2442/Kconfig"
  326. source "arch/arm/mach-s3c2443/Kconfig"
  327. source "arch/arm/mach-s3c2450/Kconfig"
  328. source "arch/arm/mach-s3c2416/Kconfig"
  329. source "arch/arm/mach-s3c6400/Kconfig"
  330. source "arch/arm/mach-s3c6410/Kconfig"
  331. endif
  332. source "arch/arm/mach-lh7a40x/Kconfig"
  333. source "arch/arm/mach-imx/Kconfig"
  334. source "arch/arm/mach-h720x/Kconfig"
  335. source "arch/arm/mach-versatile/Kconfig"
  336. source "arch/arm/mach-aaec2000/Kconfig"
  337. source "arch/arm/mach-realview/Kconfig"
  338. source "arch/arm/mach-at91/Kconfig"
  339. source "arch/arm/mach-netx/Kconfig"
  340. source "arch/arm/mach-ns9xxx/Kconfig"
  341. # Definitions to make life easier
  342. config ARCH_ACORN
  343. bool
  344. config PLAT_IOP
  345. bool
  346. source arch/arm/mm/Kconfig
  347. config IWMMXT
  348. bool "Enable iWMMXt support"
  349. depends on CPU_XSCALE || CPU_XSC3
  350. default y if PXA27x
  351. help
  352. Enable support for iWMMXt context switching at run time if
  353. running on a CPU that supports it.
  354. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  355. config XSCALE_PMU
  356. bool
  357. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  358. default y
  359. if !MMU
  360. source "arch/arm/Kconfig-nommu"
  361. endif
  362. endmenu
  363. source "arch/arm/common/Kconfig"
  364. config FORCE_MAX_ZONEORDER
  365. int
  366. depends on SA1111
  367. default "9"
  368. menu "Bus support"
  369. config ARM_AMBA
  370. bool
  371. config ISA
  372. bool
  373. help
  374. Find out whether you have ISA slots on your motherboard. ISA is the
  375. name of a bus system, i.e. the way the CPU talks to the other stuff
  376. inside your box. Other bus systems are PCI, EISA, MicroChannel
  377. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  378. newer boards don't support it. If you have ISA, say Y, otherwise N.
  379. # Select ISA DMA controller support
  380. config ISA_DMA
  381. bool
  382. select ISA_DMA_API
  383. # Select ISA DMA interface
  384. config ISA_DMA_API
  385. bool
  386. config PCI
  387. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX
  388. help
  389. Find out whether you have a PCI motherboard. PCI is the name of a
  390. bus system, i.e. the way the CPU talks to the other stuff inside
  391. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  392. VESA. If you have PCI, say Y, otherwise N.
  393. The PCI-HOWTO, available from
  394. <http://www.tldp.org/docs.html#howto>, contains valuable
  395. information about which PCI hardware does work under Linux and which
  396. doesn't.
  397. # Select the host bridge type
  398. config PCI_HOST_VIA82C505
  399. bool
  400. depends on PCI && ARCH_SHARK
  401. default y
  402. source "drivers/pci/Kconfig"
  403. source "drivers/pcmcia/Kconfig"
  404. endmenu
  405. menu "Kernel Features"
  406. config SMP
  407. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  408. depends on EXPERIMENTAL && REALVIEW_MPCORE
  409. help
  410. This enables support for systems with more than one CPU. If you have
  411. a system with only one CPU, like most personal computers, say N. If
  412. you have a system with more than one CPU, say Y.
  413. If you say N here, the kernel will run on single and multiprocessor
  414. machines, but will use only one CPU of a multiprocessor machine. If
  415. you say Y here, the kernel will run on many, but not all, single
  416. processor machines. On a single processor machine, the kernel will
  417. run faster if you say N here.
  418. See also the <file:Documentation/smp.txt>,
  419. <file:Documentation/i386/IO-APIC.txt>,
  420. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  421. <http://www.linuxdoc.org/docs.html#howto>.
  422. If you don't know what to do here, say N.
  423. config NR_CPUS
  424. int "Maximum number of CPUs (2-32)"
  425. range 2 32
  426. depends on SMP
  427. default "4"
  428. config HOTPLUG_CPU
  429. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  430. depends on SMP && HOTPLUG && EXPERIMENTAL
  431. help
  432. Say Y here to experiment with turning CPUs off and on. CPUs
  433. can be controlled through /sys/devices/system/cpu.
  434. config LOCAL_TIMERS
  435. bool "Use local timer interrupts"
  436. depends on SMP && REALVIEW_MPCORE
  437. default y
  438. help
  439. Enable support for local timers on SMP platforms, rather then the
  440. legacy IPI broadcast method. Local timers allows the system
  441. accounting to be spread across the timer interval, preventing a
  442. "thundering herd" at every timer tick.
  443. config PREEMPT
  444. bool "Preemptible Kernel (EXPERIMENTAL)"
  445. depends on EXPERIMENTAL
  446. help
  447. This option reduces the latency of the kernel when reacting to
  448. real-time or interactive events by allowing a low priority process to
  449. be preempted even if it is in kernel mode executing a system call.
  450. This allows applications to run more reliably even when the system is
  451. under load.
  452. Say Y here if you are building a kernel for a desktop, embedded
  453. or real-time system. Say N if you are unsure.
  454. config NO_IDLE_HZ
  455. bool "Dynamic tick timer"
  456. help
  457. Select this option if you want to disable continuous timer ticks
  458. and have them programmed to occur as required. This option saves
  459. power as the system can remain in idle state for longer.
  460. By default dynamic tick is disabled during the boot, and can be
  461. manually enabled with:
  462. echo 1 > /sys/devices/system/timer/timer0/dyn_tick
  463. Alternatively, if you want dynamic tick automatically enabled
  464. during boot, pass "dyntick=enable" via the kernel command string.
  465. Please note that dynamic tick may affect the accuracy of
  466. timekeeping on some platforms depending on the implementation.
  467. Currently at least OMAP, PXA2xx and SA11x0 platforms are known
  468. to have accurate timekeeping with dynamic tick.
  469. config HZ
  470. int
  471. default 128 if ARCH_L7200
  472. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  473. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  474. default 100
  475. config AEABI
  476. bool "Use the ARM EABI to compile the kernel"
  477. help
  478. This option allows for the kernel to be compiled using the latest
  479. ARM ABI (aka EABI). This is only useful if you are using a user
  480. space environment that is also compiled with EABI.
  481. Since there are major incompatibilities between the legacy ABI and
  482. EABI, especially with regard to structure member alignment, this
  483. option also changes the kernel syscall calling convention to
  484. disambiguate both ABIs and allow for backward compatibility support
  485. (selected with CONFIG_OABI_COMPAT).
  486. To use this you need GCC version 4.0.0 or later.
  487. config OABI_COMPAT
  488. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  489. depends on AEABI && EXPERIMENTAL
  490. default y
  491. help
  492. This option preserves the old syscall interface along with the
  493. new (ARM EABI) one. It also provides a compatibility layer to
  494. intercept syscalls that have structure arguments which layout
  495. in memory differs between the legacy ABI and the new ARM EABI
  496. (only for non "thumb" binaries). This option adds a tiny
  497. overhead to all syscalls and produces a slightly larger kernel.
  498. If you know you'll be using only pure EABI user space then you
  499. can say N here. If this option is not selected and you attempt
  500. to execute a legacy ABI binary then the result will be
  501. UNPREDICTABLE (in fact it can be predicted that it won't work
  502. at all). If in doubt say Y.
  503. config ARCH_DISCONTIGMEM_ENABLE
  504. bool
  505. default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
  506. help
  507. Say Y to support efficient handling of discontiguous physical memory,
  508. for architectures which are either NUMA (Non-Uniform Memory Access)
  509. or have huge holes in the physical address space for other reasons.
  510. See <file:Documentation/vm/numa> for more.
  511. config NODES_SHIFT
  512. int
  513. default "4" if ARCH_LH7A40X
  514. default "2"
  515. depends on NEED_MULTIPLE_NODES
  516. source "mm/Kconfig"
  517. config LEDS
  518. bool "Timer and CPU usage LEDs"
  519. depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
  520. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  521. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  522. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  523. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  524. ARCH_AT91 || MACH_TRIZEPS4 || MACH_SMDK6400 || MACH_SMDK6410
  525. help
  526. If you say Y here, the LEDs on your machine will be used
  527. to provide useful information about your current system status.
  528. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  529. be able to select which LEDs are active using the options below. If
  530. you are compiling a kernel for the EBSA-110 or the LART however, the
  531. red LED will simply flash regularly to indicate that the system is
  532. still functional. It is safe to say Y here if you have a CATS
  533. system, but the driver will do nothing.
  534. config LEDS_TIMER
  535. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  536. MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 || MACH_SMDK6400 || MACH_SMDK6410
  537. depends on LEDS
  538. default y if ARCH_EBSA110
  539. help
  540. If you say Y here, one of the system LEDs (the green one on the
  541. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  542. will flash regularly to indicate that the system is still
  543. operational. This is mainly useful to kernel hackers who are
  544. debugging unstable kernels.
  545. The LART uses the same LED for both Timer LED and CPU usage LED
  546. functions. You may choose to use both, but the Timer LED function
  547. will overrule the CPU usage LED.
  548. config LEDS_CPU
  549. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  550. !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 || MACH_SMDK6400 || MACH_SMDK6410
  551. depends on LEDS
  552. help
  553. If you say Y here, the red LED will be used to give a good real
  554. time indication of CPU usage, by lighting whenever the idle task
  555. is not currently executing.
  556. The LART uses the same LED for both Timer LED and CPU usage LED
  557. functions. You may choose to use both, but the Timer LED function
  558. will overrule the CPU usage LED.
  559. config ALIGNMENT_TRAP
  560. bool
  561. depends on CPU_CP15_MMU
  562. default y if !ARCH_EBSA110
  563. help
  564. ARM processors cannot fetch/store information which is not
  565. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  566. address divisible by 4. On 32-bit ARM processors, these non-aligned
  567. fetch/store instructions will be emulated in software if you say
  568. here, which has a severe performance impact. This is necessary for
  569. correct operation of some network protocols. With an IP-only
  570. configuration it is safe to say N, otherwise say Y.
  571. endmenu
  572. menu "Boot options"
  573. # Compressed boot loader in ROM. Yes, we really want to ask about
  574. # TEXT and BSS so we preserve their values in the config files.
  575. config ZBOOT_ROM_TEXT
  576. hex "Compressed ROM boot loader base address"
  577. default "0"
  578. help
  579. The physical address at which the ROM-able zImage is to be
  580. placed in the target. Platforms which normally make use of
  581. ROM-able zImage formats normally set this to a suitable
  582. value in their defconfig file.
  583. If ZBOOT_ROM is not enabled, this has no effect.
  584. config ZBOOT_ROM_BSS
  585. hex "Compressed ROM boot loader BSS address"
  586. default "0"
  587. help
  588. The base address of an area of read/write memory in the target
  589. for the ROM-able zImage which must be available while the
  590. decompressor is running. It must be large enough to hold the
  591. entire decompressed kernel plus an additional 128 KiB.
  592. Platforms which normally make use of ROM-able zImage formats
  593. normally set this to a suitable value in their defconfig file.
  594. If ZBOOT_ROM is not enabled, this has no effect.
  595. config ZBOOT_ROM
  596. bool "Compressed boot loader in ROM/flash"
  597. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  598. help
  599. Say Y here if you intend to execute your compressed kernel image
  600. (zImage) directly from ROM or flash. If unsure, say N.
  601. config CMDLINE
  602. string "Default kernel command string"
  603. default ""
  604. help
  605. On some architectures (EBSA110 and CATS), there is currently no way
  606. for the boot loader to pass arguments to the kernel. For these
  607. architectures, you should supply some command-line options at build
  608. time by entering them here. As a minimum, you should specify the
  609. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  610. config XIP_KERNEL
  611. bool "Kernel Execute-In-Place from ROM"
  612. depends on !ZBOOT_ROM
  613. help
  614. Execute-In-Place allows the kernel to run from non-volatile storage
  615. directly addressable by the CPU, such as NOR flash. This saves RAM
  616. space since the text section of the kernel is not loaded from flash
  617. to RAM. Read-write sections, such as the data section and stack,
  618. are still copied to RAM. The XIP kernel is not compressed since
  619. it has to run directly from flash, so it will take more space to
  620. store it. The flash address used to link the kernel object files,
  621. and for storing it, is configuration dependent. Therefore, if you
  622. say Y here, you must know the proper physical address where to
  623. store the kernel image depending on your own flash memory usage.
  624. Also note that the make target becomes "make xipImage" rather than
  625. "make zImage" or "make Image". The final kernel binary to put in
  626. ROM memory will be arch/arm/boot/xipImage.
  627. If unsure, say N.
  628. config XIP_PHYS_ADDR
  629. hex "XIP Kernel Physical Location"
  630. depends on XIP_KERNEL
  631. default "0x00080000"
  632. help
  633. This is the physical address in your flash memory the kernel will
  634. be linked for and stored to. This address is dependent on your
  635. own flash usage.
  636. config KEXEC
  637. bool "Kexec system call (EXPERIMENTAL)"
  638. depends on EXPERIMENTAL
  639. help
  640. kexec is a system call that implements the ability to shutdown your
  641. current kernel, and to start another kernel. It is like a reboot
  642. but it is indepedent of the system firmware. And like a reboot
  643. you can start any kernel with it, not just Linux.
  644. It is an ongoing process to be certain the hardware in a machine
  645. is properly shutdown, so do not be surprised if this code does not
  646. initially work for you. It may help to enable device hotplugging
  647. support.
  648. endmenu
  649. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX )
  650. menu "CPU Frequency scaling"
  651. source "drivers/cpufreq/Kconfig"
  652. config CPU_FREQ_SA1100
  653. bool
  654. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  655. default y
  656. config CPU_FREQ_SA1110
  657. bool
  658. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  659. default y
  660. config CPU_FREQ_INTEGRATOR
  661. tristate "CPUfreq driver for ARM Integrator CPUs"
  662. depends on ARCH_INTEGRATOR && CPU_FREQ
  663. default y
  664. help
  665. This enables the CPUfreq driver for ARM Integrator CPUs.
  666. For details, take a look at <file:Documentation/cpu-freq>.
  667. If in doubt, say Y.
  668. config CPU_FREQ_IMX
  669. tristate "CPUfreq driver for i.MX CPUs"
  670. depends on ARCH_IMX && CPU_FREQ
  671. default n
  672. help
  673. This enables the CPUfreq driver for i.MX CPUs.
  674. If in doubt, say N.
  675. endmenu
  676. endif
  677. menu "Floating point emulation"
  678. comment "At least one emulation must be selected"
  679. config FPE_NWFPE
  680. bool "NWFPE math emulation"
  681. depends on !AEABI || OABI_COMPAT
  682. ---help---
  683. Say Y to include the NWFPE floating point emulator in the kernel.
  684. This is necessary to run most binaries. Linux does not currently
  685. support floating point hardware so you need to say Y here even if
  686. your machine has an FPA or floating point co-processor podule.
  687. You may say N here if you are going to load the Acorn FPEmulator
  688. early in the bootup.
  689. config FPE_NWFPE_XP
  690. bool "Support extended precision"
  691. depends on FPE_NWFPE
  692. help
  693. Say Y to include 80-bit support in the kernel floating-point
  694. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  695. Note that gcc does not generate 80-bit operations by default,
  696. so in most cases this option only enlarges the size of the
  697. floating point emulator without any good reason.
  698. You almost surely want to say N here.
  699. config FPE_FASTFPE
  700. bool "FastFPE math emulation (EXPERIMENTAL)"
  701. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  702. ---help---
  703. Say Y here to include the FAST floating point emulator in the kernel.
  704. This is an experimental much faster emulator which now also has full
  705. precision for the mantissa. It does not support any exceptions.
  706. It is very simple, and approximately 3-6 times faster than NWFPE.
  707. It should be sufficient for most programs. It may be not suitable
  708. for scientific calculations, but you have to check this for yourself.
  709. If you do not feel you need a faster FP emulation you should better
  710. choose NWFPE.
  711. config VFP
  712. bool "VFP-format floating point maths"
  713. depends on CPU_V6 || CPU_ARM926T
  714. help
  715. Say Y to include VFP support code in the kernel. This is needed
  716. if your hardware includes a VFP unit.
  717. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  718. release notes and additional status information.
  719. Say N if your target does not have VFP hardware.
  720. endmenu
  721. menu "Userspace binary formats"
  722. source "fs/Kconfig.binfmt"
  723. config ARTHUR
  724. tristate "RISC OS personality"
  725. depends on !AEABI
  726. help
  727. Say Y here to include the kernel code necessary if you want to run
  728. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  729. experimental; if this sounds frightening, say N and sleep in peace.
  730. You can also say M here to compile this support as a module (which
  731. will be called arthur).
  732. endmenu
  733. menu "Power management options"
  734. source "kernel/power/Kconfig"
  735. endmenu
  736. source "net/Kconfig"
  737. menu "Device Drivers"
  738. source "drivers/base/Kconfig"
  739. source "drivers/connector/Kconfig"
  740. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  741. source "drivers/mtd/Kconfig"
  742. endif
  743. source "drivers/parport/Kconfig"
  744. source "drivers/pnp/Kconfig"
  745. source "drivers/block/Kconfig"
  746. source "drivers/acorn/block/Kconfig"
  747. if PCMCIA || ARCH_CLPS7500 || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX \
  748. || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
  749. || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
  750. || ARCH_IXP23XX
  751. source "drivers/ide/Kconfig"
  752. endif
  753. source "drivers/scsi/Kconfig"
  754. source "drivers/ata/Kconfig"
  755. source "drivers/md/Kconfig"
  756. source "drivers/message/fusion/Kconfig"
  757. source "drivers/ieee1394/Kconfig"
  758. source "drivers/message/i2o/Kconfig"
  759. source "drivers/net/Kconfig"
  760. source "drivers/isdn/Kconfig"
  761. # input before char - char/joystick depends on it. As does USB.
  762. source "drivers/input/Kconfig"
  763. source "drivers/char/Kconfig"
  764. source "drivers/i2c/Kconfig"
  765. source "drivers/spi/Kconfig"
  766. source "drivers/w1/Kconfig"
  767. source "drivers/hwmon/Kconfig"
  768. source "drivers/l3/Kconfig"
  769. source "drivers/misc/Kconfig"
  770. source "drivers/mfd/Kconfig"
  771. source "drivers/leds/Kconfig"
  772. source "drivers/media/Kconfig"
  773. source "drivers/video/Kconfig"
  774. source "sound/Kconfig"
  775. source "drivers/hid/Kconfig"
  776. source "drivers/usb/Kconfig"
  777. source "drivers/mmc/Kconfig"
  778. source "drivers/rtc/Kconfig"
  779. source "drivers/pwm/Kconfig"
  780. if CPU_S3C6410
  781. source "drivers/g3d/Kconfig"
  782. endif
  783. endmenu
  784. source "fs/Kconfig"
  785. source "arch/arm/oprofile/Kconfig"
  786. source "arch/arm/Kconfig.debug"
  787. source "security/Kconfig"
  788. source "crypto/Kconfig"
  789. source "lib/Kconfig"