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 GENERIC_CLOCKEVENTS
  27. bool
  28. default n
  29. config MMU
  30. bool
  31. default y
  32. config NO_IOPORT
  33. bool
  34. default n
  35. config EISA
  36. bool
  37. ---help---
  38. The Extended Industry Standard Architecture (EISA) bus was
  39. developed as an open alternative to the IBM MicroChannel bus.
  40. The EISA bus provided some of the features of the IBM MicroChannel
  41. bus while maintaining backward compatibility with cards made for
  42. the older ISA bus. The EISA bus saw limited use between 1988 and
  43. 1995 when it was made obsolete by the PCI bus.
  44. Say Y here if you are building a kernel for an EISA-based machine.
  45. Otherwise, say N.
  46. config SBUS
  47. bool
  48. config MCA
  49. bool
  50. help
  51. MicroChannel Architecture is found in some IBM PS/2 machines and
  52. laptops. It is a bus system similar to PCI or ISA. See
  53. <file:Documentation/mca.txt> (and especially the web page given
  54. there) before attempting to build an MCA bus kernel.
  55. config GENERIC_HARDIRQS
  56. bool
  57. default y
  58. config TRACE_IRQFLAGS_SUPPORT
  59. bool
  60. default y
  61. config HARDIRQS_SW_RESEND
  62. bool
  63. default y
  64. config GENERIC_IRQ_PROBE
  65. bool
  66. default y
  67. config RWSEM_GENERIC_SPINLOCK
  68. bool
  69. default y
  70. config RWSEM_XCHGADD_ALGORITHM
  71. bool
  72. config ARCH_HAS_ILOG2_U32
  73. bool
  74. default n
  75. config ARCH_HAS_ILOG2_U64
  76. bool
  77. default n
  78. config GENERIC_HWEIGHT
  79. bool
  80. default y
  81. config GENERIC_CALIBRATE_DELAY
  82. bool
  83. default y
  84. config GENERIC_BUST_SPINLOCK
  85. bool
  86. config ARCH_MAY_HAVE_PC_FDC
  87. bool
  88. config ZONE_DMA
  89. bool
  90. default y
  91. config GENERIC_ISA_DMA
  92. bool
  93. config FIQ
  94. bool
  95. config ARCH_MTD_XIP
  96. bool
  97. config VECTORS_BASE
  98. hex
  99. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  100. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  101. default 0x00000000
  102. help
  103. The base address of exception vectors.
  104. source "init/Kconfig"
  105. menu "System Type"
  106. choice
  107. prompt "ARM system type"
  108. default ARCH_VERSATILE
  109. config ARCH_AAEC2000
  110. bool "Agilent AAEC-2000 based"
  111. select ARM_AMBA
  112. help
  113. This enables support for systems based on the Agilent AAEC-2000
  114. config ARCH_INTEGRATOR
  115. bool "ARM Ltd. Integrator family"
  116. select ARM_AMBA
  117. select ICST525
  118. help
  119. Support for ARM's Integrator platform.
  120. config ARCH_REALVIEW
  121. bool "ARM Ltd. RealView family"
  122. select ARM_AMBA
  123. select ICST307
  124. help
  125. This enables support for ARM Ltd RealView boards.
  126. config ARCH_VERSATILE
  127. bool "ARM Ltd. Versatile family"
  128. select ARM_AMBA
  129. select ARM_VIC
  130. select ICST307
  131. select GENERIC_TIME
  132. select GENERIC_CLOCKEVENTS
  133. help
  134. This enables support for ARM Ltd Versatile board.
  135. config ARCH_AT91
  136. bool "Atmel AT91"
  137. select GENERIC_GPIO
  138. help
  139. This enables support for systems based on the Atmel AT91RM9200
  140. and AT91SAM9xxx processors.
  141. config ARCH_CLPS7500
  142. bool "Cirrus CL-PS7500FE"
  143. select TIMER_ACORN
  144. select ISA
  145. select NO_IOPORT
  146. help
  147. Support for the Cirrus Logic PS7500FE system-on-a-chip.
  148. config ARCH_CLPS711X
  149. bool "Cirrus Logic CLPS711x/EP721x-based"
  150. help
  151. Support for Cirrus Logic 711x/721x based boards.
  152. config ARCH_CO285
  153. bool "Co-EBSA285"
  154. select FOOTBRIDGE
  155. select FOOTBRIDGE_ADDIN
  156. help
  157. Support for Intel's EBSA285 companion chip.
  158. config ARCH_EBSA110
  159. bool "EBSA-110"
  160. select ISA
  161. select NO_IOPORT
  162. help
  163. This is an evaluation board for the StrongARM processor available
  164. from Digital. It has limited hardware on-board, including an
  165. Ethernet interface, two PCMCIA sockets, two serial ports and a
  166. parallel port.
  167. config ARCH_EP93XX
  168. bool "EP93xx-based"
  169. select ARM_AMBA
  170. select ARM_VIC
  171. help
  172. This enables support for the Cirrus EP93xx series of CPUs.
  173. config ARCH_FOOTBRIDGE
  174. bool "FootBridge"
  175. select FOOTBRIDGE
  176. help
  177. Support for systems based on the DC21285 companion chip
  178. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  179. config ARCH_NETX
  180. bool "Hilscher NetX based"
  181. select ARM_VIC
  182. help
  183. This enables support for systems based on the Hilscher NetX Soc
  184. config ARCH_H720X
  185. bool "Hynix HMS720x-based"
  186. select ISA_DMA_API
  187. help
  188. This enables support for systems based on the Hynix HMS720x
  189. config ARCH_IMX
  190. bool "IMX"
  191. help
  192. Support for Motorola's i.MX family of processors (MX1, MXL).
  193. config ARCH_IOP32X
  194. bool "IOP32x-based"
  195. depends on MMU
  196. select PLAT_IOP
  197. select PCI
  198. help
  199. Support for Intel's 80219 and IOP32X (XScale) family of
  200. processors.
  201. config ARCH_IOP33X
  202. bool "IOP33x-based"
  203. depends on MMU
  204. select PLAT_IOP
  205. select PCI
  206. help
  207. Support for Intel's IOP33X (XScale) family of processors.
  208. config ARCH_IOP13XX
  209. bool "IOP13xx-based"
  210. depends on MMU
  211. select PLAT_IOP
  212. select PCI
  213. help
  214. Support for Intel's IOP13XX (XScale) family of processors.
  215. config ARCH_IXP4XX
  216. bool "IXP4xx-based"
  217. depends on MMU
  218. select GENERIC_TIME
  219. select GENERIC_CLOCKEVENTS
  220. help
  221. Support for Intel's IXP4XX (XScale) family of processors.
  222. config ARCH_IXP2000
  223. bool "IXP2400/2800-based"
  224. depends on MMU
  225. select PCI
  226. help
  227. Support for Intel's IXP2400/2800 (XScale) family of processors.
  228. config ARCH_IXP23XX
  229. bool "IXP23XX-based"
  230. depends on MMU
  231. select PCI
  232. help
  233. Support for Intel's IXP23xx (XScale) family of processors.
  234. config ARCH_L7200
  235. bool "LinkUp-L7200"
  236. select FIQ
  237. help
  238. Say Y here if you intend to run this kernel on a LinkUp Systems
  239. L7200 Software Development Board which uses an ARM720T processor.
  240. Information on this board can be obtained at:
  241. <http://www.linkupsys.com/>
  242. If you have any questions or comments about the Linux kernel port
  243. to this board, send e-mail to <sjhill@cotw.com>.
  244. config ARCH_NS9XXX
  245. bool "NetSilicon NS9xxx"
  246. help
  247. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  248. System.
  249. <http://www.digi.com/products/microprocessors/index.jsp>
  250. config ARCH_PNX4008
  251. bool "Philips Nexperia PNX4008 Mobile"
  252. help
  253. This enables support for Philips PNX4008 mobile platform.
  254. config ARCH_PXA
  255. bool "PXA2xx-based"
  256. depends on MMU
  257. select ARCH_MTD_XIP
  258. select GENERIC_GPIO
  259. select GENERIC_TIME
  260. help
  261. Support for Intel's PXA2XX processor line.
  262. config ARCH_RPC
  263. bool "RiscPC"
  264. select ARCH_ACORN
  265. select FIQ
  266. select TIMER_ACORN
  267. select ARCH_MAY_HAVE_PC_FDC
  268. select ISA_DMA_API
  269. select NO_IOPORT
  270. help
  271. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  272. CD-ROM interface, serial and parallel port, and the floppy drive.
  273. config ARCH_SA1100
  274. bool "SA1100-based"
  275. select ISA
  276. select ARCH_DISCONTIGMEM_ENABLE
  277. select ARCH_MTD_XIP
  278. select GENERIC_GPIO
  279. help
  280. Support for StrongARM 11x0 based boards.
  281. config ARCH_S3C2410
  282. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  283. select GENERIC_GPIO
  284. help
  285. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  286. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  287. the Samsung SMDK2410 development board (and derivatives).
  288. config ARCH_SHARK
  289. bool "Shark"
  290. select ISA
  291. select ISA_DMA
  292. select PCI
  293. help
  294. Support for the StrongARM based Digital DNARD machine, also known
  295. as "Shark" (<http://www.shark-linux.de/shark.html>).
  296. config ARCH_LH7A40X
  297. bool "Sharp LH7A40X"
  298. help
  299. Say Y here for systems based on one of the Sharp LH7A40X
  300. System on a Chip processors. These CPUs include an ARM922T
  301. core with a wide array of integrated devices for
  302. hand-held and low-power applications.
  303. config ARCH_OMAP
  304. bool "TI OMAP"
  305. select GENERIC_GPIO
  306. select GENERIC_TIME
  307. help
  308. Support for TI's OMAP platform (OMAP1 and OMAP2).
  309. endchoice
  310. source "arch/arm/mach-clps711x/Kconfig"
  311. source "arch/arm/mach-ep93xx/Kconfig"
  312. source "arch/arm/mach-footbridge/Kconfig"
  313. source "arch/arm/mach-integrator/Kconfig"
  314. source "arch/arm/mach-iop32x/Kconfig"
  315. source "arch/arm/mach-iop33x/Kconfig"
  316. source "arch/arm/mach-iop13xx/Kconfig"
  317. source "arch/arm/mach-ixp4xx/Kconfig"
  318. source "arch/arm/mach-ixp2000/Kconfig"
  319. source "arch/arm/mach-ixp23xx/Kconfig"
  320. source "arch/arm/mach-pxa/Kconfig"
  321. source "arch/arm/mach-sa1100/Kconfig"
  322. source "arch/arm/plat-omap/Kconfig"
  323. source "arch/arm/mach-omap1/Kconfig"
  324. source "arch/arm/mach-omap2/Kconfig"
  325. source "arch/arm/plat-s3c24xx/Kconfig"
  326. if ARCH_S3C2410
  327. source "arch/arm/mach-s3c2400/Kconfig"
  328. source "arch/arm/mach-s3c2410/Kconfig"
  329. source "arch/arm/mach-s3c2412/Kconfig"
  330. source "arch/arm/mach-s3c2440/Kconfig"
  331. source "arch/arm/mach-s3c2442/Kconfig"
  332. source "arch/arm/mach-s3c2443/Kconfig"
  333. endif
  334. source "arch/arm/mach-lh7a40x/Kconfig"
  335. source "arch/arm/mach-imx/Kconfig"
  336. source "arch/arm/mach-h720x/Kconfig"
  337. source "arch/arm/mach-versatile/Kconfig"
  338. source "arch/arm/mach-aaec2000/Kconfig"
  339. source "arch/arm/mach-realview/Kconfig"
  340. source "arch/arm/mach-at91/Kconfig"
  341. source "arch/arm/mach-netx/Kconfig"
  342. source "arch/arm/mach-ns9xxx/Kconfig"
  343. # Definitions to make life easier
  344. config ARCH_ACORN
  345. bool
  346. config PLAT_IOP
  347. bool
  348. source arch/arm/mm/Kconfig
  349. config IWMMXT
  350. bool "Enable iWMMXt support"
  351. depends on CPU_XSCALE || CPU_XSC3
  352. default y if PXA27x
  353. help
  354. Enable support for iWMMXt context switching at run time if
  355. running on a CPU that supports it.
  356. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  357. config XSCALE_PMU
  358. bool
  359. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  360. default y
  361. if !MMU
  362. source "arch/arm/Kconfig-nommu"
  363. endif
  364. endmenu
  365. source "arch/arm/common/Kconfig"
  366. config FORCE_MAX_ZONEORDER
  367. int
  368. depends on SA1111
  369. default "9"
  370. menu "Bus support"
  371. config ARM_AMBA
  372. bool
  373. config ISA
  374. bool
  375. help
  376. Find out whether you have ISA slots on your motherboard. ISA is the
  377. name of a bus system, i.e. the way the CPU talks to the other stuff
  378. inside your box. Other bus systems are PCI, EISA, MicroChannel
  379. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  380. newer boards don't support it. If you have ISA, say Y, otherwise N.
  381. # Select ISA DMA controller support
  382. config ISA_DMA
  383. bool
  384. select ISA_DMA_API
  385. # Select ISA DMA interface
  386. config ISA_DMA_API
  387. bool
  388. config PCI
  389. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX
  390. help
  391. Find out whether you have a PCI motherboard. PCI is the name of a
  392. bus system, i.e. the way the CPU talks to the other stuff inside
  393. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  394. VESA. If you have PCI, say Y, otherwise N.
  395. The PCI-HOWTO, available from
  396. <http://www.tldp.org/docs.html#howto>, contains valuable
  397. information about which PCI hardware does work under Linux and which
  398. doesn't.
  399. # Select the host bridge type
  400. config PCI_HOST_VIA82C505
  401. bool
  402. depends on PCI && ARCH_SHARK
  403. default y
  404. source "drivers/pci/Kconfig"
  405. source "drivers/pcmcia/Kconfig"
  406. endmenu
  407. menu "Kernel Features"
  408. source "kernel/time/Kconfig"
  409. config SMP
  410. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  411. depends on EXPERIMENTAL && REALVIEW_MPCORE
  412. help
  413. This enables support for systems with more than one CPU. If you have
  414. a system with only one CPU, like most personal computers, say N. If
  415. you have a system with more than one CPU, say Y.
  416. If you say N here, the kernel will run on single and multiprocessor
  417. machines, but will use only one CPU of a multiprocessor machine. If
  418. you say Y here, the kernel will run on many, but not all, single
  419. processor machines. On a single processor machine, the kernel will
  420. run faster if you say N here.
  421. See also the <file:Documentation/smp.txt>,
  422. <file:Documentation/i386/IO-APIC.txt>,
  423. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  424. <http://www.linuxdoc.org/docs.html#howto>.
  425. If you don't know what to do here, say N.
  426. config NR_CPUS
  427. int "Maximum number of CPUs (2-32)"
  428. range 2 32
  429. depends on SMP
  430. default "4"
  431. config HOTPLUG_CPU
  432. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  433. depends on SMP && HOTPLUG && EXPERIMENTAL
  434. help
  435. Say Y here to experiment with turning CPUs off and on. CPUs
  436. can be controlled through /sys/devices/system/cpu.
  437. config LOCAL_TIMERS
  438. bool "Use local timer interrupts"
  439. depends on SMP && REALVIEW_MPCORE
  440. default y
  441. help
  442. Enable support for local timers on SMP platforms, rather then the
  443. legacy IPI broadcast method. Local timers allows the system
  444. accounting to be spread across the timer interval, preventing a
  445. "thundering herd" at every timer tick.
  446. config PREEMPT
  447. bool "Preemptible Kernel (EXPERIMENTAL)"
  448. depends on EXPERIMENTAL
  449. help
  450. This option reduces the latency of the kernel when reacting to
  451. real-time or interactive events by allowing a low priority process to
  452. be preempted even if it is in kernel mode executing a system call.
  453. This allows applications to run more reliably even when the system is
  454. under load.
  455. Say Y here if you are building a kernel for a desktop, embedded
  456. or real-time system. Say N if you are unsure.
  457. config NO_IDLE_HZ
  458. bool "Dynamic tick timer"
  459. depends on !GENERIC_CLOCKEVENTS
  460. help
  461. Select this option if you want to disable continuous timer ticks
  462. and have them programmed to occur as required. This option saves
  463. power as the system can remain in idle state for longer.
  464. By default dynamic tick is disabled during the boot, and can be
  465. manually enabled with:
  466. echo 1 > /sys/devices/system/timer/timer0/dyn_tick
  467. Alternatively, if you want dynamic tick automatically enabled
  468. during boot, pass "dyntick=enable" via the kernel command string.
  469. Please note that dynamic tick may affect the accuracy of
  470. timekeeping on some platforms depending on the implementation.
  471. Currently at least OMAP, PXA2xx and SA11x0 platforms are known
  472. to have accurate timekeeping with dynamic tick.
  473. config HZ
  474. int
  475. default 128 if ARCH_L7200
  476. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  477. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  478. default 100
  479. config AEABI
  480. bool "Use the ARM EABI to compile the kernel"
  481. help
  482. This option allows for the kernel to be compiled using the latest
  483. ARM ABI (aka EABI). This is only useful if you are using a user
  484. space environment that is also compiled with EABI.
  485. Since there are major incompatibilities between the legacy ABI and
  486. EABI, especially with regard to structure member alignment, this
  487. option also changes the kernel syscall calling convention to
  488. disambiguate both ABIs and allow for backward compatibility support
  489. (selected with CONFIG_OABI_COMPAT).
  490. To use this you need GCC version 4.0.0 or later.
  491. config OABI_COMPAT
  492. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  493. depends on AEABI && EXPERIMENTAL
  494. default y
  495. help
  496. This option preserves the old syscall interface along with the
  497. new (ARM EABI) one. It also provides a compatibility layer to
  498. intercept syscalls that have structure arguments which layout
  499. in memory differs between the legacy ABI and the new ARM EABI
  500. (only for non "thumb" binaries). This option adds a tiny
  501. overhead to all syscalls and produces a slightly larger kernel.
  502. If you know you'll be using only pure EABI user space then you
  503. can say N here. If this option is not selected and you attempt
  504. to execute a legacy ABI binary then the result will be
  505. UNPREDICTABLE (in fact it can be predicted that it won't work
  506. at all). If in doubt say Y.
  507. config ARCH_DISCONTIGMEM_ENABLE
  508. bool
  509. default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
  510. help
  511. Say Y to support efficient handling of discontiguous physical memory,
  512. for architectures which are either NUMA (Non-Uniform Memory Access)
  513. or have huge holes in the physical address space for other reasons.
  514. See <file:Documentation/vm/numa> for more.
  515. config NODES_SHIFT
  516. int
  517. default "4" if ARCH_LH7A40X
  518. default "2"
  519. depends on NEED_MULTIPLE_NODES
  520. source "mm/Kconfig"
  521. config LEDS
  522. bool "Timer and CPU usage LEDs"
  523. depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
  524. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  525. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  526. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  527. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  528. ARCH_AT91 || MACH_TRIZEPS4
  529. help
  530. If you say Y here, the LEDs on your machine will be used
  531. to provide useful information about your current system status.
  532. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  533. be able to select which LEDs are active using the options below. If
  534. you are compiling a kernel for the EBSA-110 or the LART however, the
  535. red LED will simply flash regularly to indicate that the system is
  536. still functional. It is safe to say Y here if you have a CATS
  537. system, but the driver will do nothing.
  538. config LEDS_TIMER
  539. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  540. MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
  541. depends on LEDS
  542. depends on !GENERIC_CLOCKEVENTS
  543. default y if ARCH_EBSA110
  544. help
  545. If you say Y here, one of the system LEDs (the green one on the
  546. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  547. will flash regularly to indicate that the system is still
  548. operational. This is mainly useful to kernel hackers who are
  549. debugging unstable kernels.
  550. The LART uses the same LED for both Timer LED and CPU usage LED
  551. functions. You may choose to use both, but the Timer LED function
  552. will overrule the CPU usage LED.
  553. config LEDS_CPU
  554. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  555. !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
  556. depends on LEDS
  557. help
  558. If you say Y here, the red LED will be used to give a good real
  559. time indication of CPU usage, by lighting whenever the idle task
  560. is not currently executing.
  561. The LART uses the same LED for both Timer LED and CPU usage LED
  562. functions. You may choose to use both, but the Timer LED function
  563. will overrule the CPU usage LED.
  564. config ALIGNMENT_TRAP
  565. bool
  566. depends on CPU_CP15_MMU
  567. default y if !ARCH_EBSA110
  568. help
  569. ARM processors cannot fetch/store information which is not
  570. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  571. address divisible by 4. On 32-bit ARM processors, these non-aligned
  572. fetch/store instructions will be emulated in software if you say
  573. here, which has a severe performance impact. This is necessary for
  574. correct operation of some network protocols. With an IP-only
  575. configuration it is safe to say N, otherwise say Y.
  576. endmenu
  577. menu "Boot options"
  578. # Compressed boot loader in ROM. Yes, we really want to ask about
  579. # TEXT and BSS so we preserve their values in the config files.
  580. config ZBOOT_ROM_TEXT
  581. hex "Compressed ROM boot loader base address"
  582. default "0"
  583. help
  584. The physical address at which the ROM-able zImage is to be
  585. placed in the target. Platforms which normally make use of
  586. ROM-able zImage formats normally set this to a suitable
  587. value in their defconfig file.
  588. If ZBOOT_ROM is not enabled, this has no effect.
  589. config ZBOOT_ROM_BSS
  590. hex "Compressed ROM boot loader BSS address"
  591. default "0"
  592. help
  593. The base address of an area of read/write memory in the target
  594. for the ROM-able zImage which must be available while the
  595. decompressor is running. It must be large enough to hold the
  596. entire decompressed kernel plus an additional 128 KiB.
  597. Platforms which normally make use of ROM-able zImage formats
  598. normally set this to a suitable value in their defconfig file.
  599. If ZBOOT_ROM is not enabled, this has no effect.
  600. config ZBOOT_ROM
  601. bool "Compressed boot loader in ROM/flash"
  602. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  603. help
  604. Say Y here if you intend to execute your compressed kernel image
  605. (zImage) directly from ROM or flash. If unsure, say N.
  606. config CMDLINE
  607. string "Default kernel command string"
  608. default ""
  609. help
  610. On some architectures (EBSA110 and CATS), there is currently no way
  611. for the boot loader to pass arguments to the kernel. For these
  612. architectures, you should supply some command-line options at build
  613. time by entering them here. As a minimum, you should specify the
  614. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  615. config XIP_KERNEL
  616. bool "Kernel Execute-In-Place from ROM"
  617. depends on !ZBOOT_ROM
  618. help
  619. Execute-In-Place allows the kernel to run from non-volatile storage
  620. directly addressable by the CPU, such as NOR flash. This saves RAM
  621. space since the text section of the kernel is not loaded from flash
  622. to RAM. Read-write sections, such as the data section and stack,
  623. are still copied to RAM. The XIP kernel is not compressed since
  624. it has to run directly from flash, so it will take more space to
  625. store it. The flash address used to link the kernel object files,
  626. and for storing it, is configuration dependent. Therefore, if you
  627. say Y here, you must know the proper physical address where to
  628. store the kernel image depending on your own flash memory usage.
  629. Also note that the make target becomes "make xipImage" rather than
  630. "make zImage" or "make Image". The final kernel binary to put in
  631. ROM memory will be arch/arm/boot/xipImage.
  632. If unsure, say N.
  633. config XIP_PHYS_ADDR
  634. hex "XIP Kernel Physical Location"
  635. depends on XIP_KERNEL
  636. default "0x00080000"
  637. help
  638. This is the physical address in your flash memory the kernel will
  639. be linked for and stored to. This address is dependent on your
  640. own flash usage.
  641. config KEXEC
  642. bool "Kexec system call (EXPERIMENTAL)"
  643. depends on EXPERIMENTAL
  644. help
  645. kexec is a system call that implements the ability to shutdown your
  646. current kernel, and to start another kernel. It is like a reboot
  647. but it is indepedent of the system firmware. And like a reboot
  648. you can start any kernel with it, not just Linux.
  649. It is an ongoing process to be certain the hardware in a machine
  650. is properly shutdown, so do not be surprised if this code does not
  651. initially work for you. It may help to enable device hotplugging
  652. support.
  653. endmenu
  654. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX )
  655. menu "CPU Frequency scaling"
  656. source "drivers/cpufreq/Kconfig"
  657. config CPU_FREQ_SA1100
  658. bool
  659. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  660. default y
  661. config CPU_FREQ_SA1110
  662. bool
  663. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  664. default y
  665. config CPU_FREQ_INTEGRATOR
  666. tristate "CPUfreq driver for ARM Integrator CPUs"
  667. depends on ARCH_INTEGRATOR && CPU_FREQ
  668. default y
  669. help
  670. This enables the CPUfreq driver for ARM Integrator CPUs.
  671. For details, take a look at <file:Documentation/cpu-freq>.
  672. If in doubt, say Y.
  673. config CPU_FREQ_IMX
  674. tristate "CPUfreq driver for i.MX CPUs"
  675. depends on ARCH_IMX && CPU_FREQ
  676. default n
  677. help
  678. This enables the CPUfreq driver for i.MX CPUs.
  679. If in doubt, say N.
  680. endmenu
  681. endif
  682. menu "Floating point emulation"
  683. comment "At least one emulation must be selected"
  684. config FPE_NWFPE
  685. bool "NWFPE math emulation"
  686. depends on !AEABI || OABI_COMPAT
  687. ---help---
  688. Say Y to include the NWFPE floating point emulator in the kernel.
  689. This is necessary to run most binaries. Linux does not currently
  690. support floating point hardware so you need to say Y here even if
  691. your machine has an FPA or floating point co-processor podule.
  692. You may say N here if you are going to load the Acorn FPEmulator
  693. early in the bootup.
  694. config FPE_NWFPE_XP
  695. bool "Support extended precision"
  696. depends on FPE_NWFPE
  697. help
  698. Say Y to include 80-bit support in the kernel floating-point
  699. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  700. Note that gcc does not generate 80-bit operations by default,
  701. so in most cases this option only enlarges the size of the
  702. floating point emulator without any good reason.
  703. You almost surely want to say N here.
  704. config FPE_FASTFPE
  705. bool "FastFPE math emulation (EXPERIMENTAL)"
  706. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  707. ---help---
  708. Say Y here to include the FAST floating point emulator in the kernel.
  709. This is an experimental much faster emulator which now also has full
  710. precision for the mantissa. It does not support any exceptions.
  711. It is very simple, and approximately 3-6 times faster than NWFPE.
  712. It should be sufficient for most programs. It may be not suitable
  713. for scientific calculations, but you have to check this for yourself.
  714. If you do not feel you need a faster FP emulation you should better
  715. choose NWFPE.
  716. config VFP
  717. bool "VFP-format floating point maths"
  718. depends on CPU_V6 || CPU_ARM926T
  719. help
  720. Say Y to include VFP support code in the kernel. This is needed
  721. if your hardware includes a VFP unit.
  722. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  723. release notes and additional status information.
  724. Say N if your target does not have VFP hardware.
  725. endmenu
  726. menu "Userspace binary formats"
  727. source "fs/Kconfig.binfmt"
  728. config ARTHUR
  729. tristate "RISC OS personality"
  730. depends on !AEABI
  731. help
  732. Say Y here to include the kernel code necessary if you want to run
  733. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  734. experimental; if this sounds frightening, say N and sleep in peace.
  735. You can also say M here to compile this support as a module (which
  736. will be called arthur).
  737. endmenu
  738. menu "Power management options"
  739. source "kernel/power/Kconfig"
  740. endmenu
  741. source "net/Kconfig"
  742. menu "Device Drivers"
  743. source "drivers/base/Kconfig"
  744. source "drivers/connector/Kconfig"
  745. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  746. source "drivers/mtd/Kconfig"
  747. endif
  748. source "drivers/parport/Kconfig"
  749. source "drivers/pnp/Kconfig"
  750. source "drivers/block/Kconfig"
  751. source "drivers/acorn/block/Kconfig"
  752. if PCMCIA || ARCH_CLPS7500 || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX \
  753. || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
  754. || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
  755. || ARCH_IXP23XX
  756. source "drivers/ide/Kconfig"
  757. endif
  758. source "drivers/scsi/Kconfig"
  759. source "drivers/ata/Kconfig"
  760. source "drivers/md/Kconfig"
  761. source "drivers/message/fusion/Kconfig"
  762. source "drivers/ieee1394/Kconfig"
  763. source "drivers/message/i2o/Kconfig"
  764. source "drivers/net/Kconfig"
  765. source "drivers/isdn/Kconfig"
  766. # input before char - char/joystick depends on it. As does USB.
  767. source "drivers/input/Kconfig"
  768. source "drivers/char/Kconfig"
  769. source "drivers/i2c/Kconfig"
  770. source "drivers/spi/Kconfig"
  771. source "drivers/w1/Kconfig"
  772. source "drivers/hwmon/Kconfig"
  773. #source "drivers/l3/Kconfig"
  774. source "drivers/misc/Kconfig"
  775. source "drivers/mfd/Kconfig"
  776. source "drivers/leds/Kconfig"
  777. source "drivers/media/Kconfig"
  778. source "drivers/video/Kconfig"
  779. source "sound/Kconfig"
  780. source "drivers/hid/Kconfig"
  781. source "drivers/usb/Kconfig"
  782. source "drivers/mmc/Kconfig"
  783. source "drivers/rtc/Kconfig"
  784. endmenu
  785. source "fs/Kconfig"
  786. source "arch/arm/oprofile/Kconfig"
  787. source "arch/arm/Kconfig.debug"
  788. source "security/Kconfig"
  789. source "crypto/Kconfig"
  790. source "lib/Kconfig"