Kconfig 26 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. help
  11. The ARM series is a line of low-power-consumption RISC chip designs
  12. licensed by ARM Ltd and targeted at embedded applications and
  13. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  14. manufactured, but legacy ARM-based PC hardware remains popular in
  15. Europe. There is an ARM Linux project with a web page at
  16. <http://www.arm.linux.org.uk/>.
  17. config GENERIC_TIME
  18. bool
  19. default n
  20. config MMU
  21. bool
  22. default y
  23. config EISA
  24. bool
  25. ---help---
  26. The Extended Industry Standard Architecture (EISA) bus was
  27. developed as an open alternative to the IBM MicroChannel bus.
  28. The EISA bus provided some of the features of the IBM MicroChannel
  29. bus while maintaining backward compatibility with cards made for
  30. the older ISA bus. The EISA bus saw limited use between 1988 and
  31. 1995 when it was made obsolete by the PCI bus.
  32. Say Y here if you are building a kernel for an EISA-based machine.
  33. Otherwise, say N.
  34. config SBUS
  35. bool
  36. config MCA
  37. bool
  38. help
  39. MicroChannel Architecture is found in some IBM PS/2 machines and
  40. laptops. It is a bus system similar to PCI or ISA. See
  41. <file:Documentation/mca.txt> (and especially the web page given
  42. there) before attempting to build an MCA bus kernel.
  43. config GENERIC_HARDIRQS
  44. bool
  45. default y
  46. config TRACE_IRQFLAGS_SUPPORT
  47. bool
  48. default y
  49. config HARDIRQS_SW_RESEND
  50. bool
  51. default y
  52. config GENERIC_IRQ_PROBE
  53. bool
  54. default y
  55. config RWSEM_GENERIC_SPINLOCK
  56. bool
  57. default y
  58. config RWSEM_XCHGADD_ALGORITHM
  59. bool
  60. config GENERIC_HWEIGHT
  61. bool
  62. default y
  63. config GENERIC_CALIBRATE_DELAY
  64. bool
  65. default y
  66. config GENERIC_BUST_SPINLOCK
  67. bool
  68. config ARCH_MAY_HAVE_PC_FDC
  69. bool
  70. config GENERIC_ISA_DMA
  71. bool
  72. config FIQ
  73. bool
  74. config ARCH_MTD_XIP
  75. bool
  76. config VECTORS_BASE
  77. hex
  78. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  79. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  80. default 0x00000000
  81. help
  82. The base address of exception vectors.
  83. source "init/Kconfig"
  84. menu "System Type"
  85. choice
  86. prompt "ARM system type"
  87. default ARCH_VERSATILE
  88. config ARCH_AAEC2000
  89. bool "Agilent AAEC-2000 based"
  90. select ARM_AMBA
  91. help
  92. This enables support for systems based on the Agilent AAEC-2000
  93. config ARCH_INTEGRATOR
  94. bool "ARM Ltd. Integrator family"
  95. select ARM_AMBA
  96. select ICST525
  97. help
  98. Support for ARM's Integrator platform.
  99. config ARCH_REALVIEW
  100. bool "ARM Ltd. RealView family"
  101. select ARM_AMBA
  102. select ICST307
  103. help
  104. This enables support for ARM Ltd RealView boards.
  105. config ARCH_VERSATILE
  106. bool "ARM Ltd. Versatile family"
  107. select ARM_AMBA
  108. select ARM_VIC
  109. select ICST307
  110. help
  111. This enables support for ARM Ltd Versatile board.
  112. config ARCH_AT91
  113. bool "Atmel AT91"
  114. help
  115. This enables support for systems based on the Atmel AT91RM9200
  116. and AT91SAM9xxx processors.
  117. config ARCH_CLPS7500
  118. bool "Cirrus CL-PS7500FE"
  119. select TIMER_ACORN
  120. select ISA
  121. help
  122. Support for the Cirrus Logic PS7500FE system-on-a-chip.
  123. config ARCH_CLPS711X
  124. bool "Cirrus Logic CLPS711x/EP721x-based"
  125. help
  126. Support for Cirrus Logic 711x/721x based boards.
  127. config ARCH_CO285
  128. bool "Co-EBSA285"
  129. select FOOTBRIDGE
  130. select FOOTBRIDGE_ADDIN
  131. help
  132. Support for Intel's EBSA285 companion chip.
  133. config ARCH_EBSA110
  134. bool "EBSA-110"
  135. select ISA
  136. help
  137. This is an evaluation board for the StrongARM processor available
  138. from Digital. It has limited hardware on-board, including an
  139. Ethernet interface, two PCMCIA sockets, two serial ports and a
  140. parallel port.
  141. config ARCH_EP93XX
  142. bool "EP93xx-based"
  143. select ARM_AMBA
  144. select ARM_VIC
  145. help
  146. This enables support for the Cirrus EP93xx series of CPUs.
  147. config ARCH_FOOTBRIDGE
  148. bool "FootBridge"
  149. select FOOTBRIDGE
  150. help
  151. Support for systems based on the DC21285 companion chip
  152. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  153. config ARCH_NETX
  154. bool "Hilscher NetX based"
  155. select ARM_VIC
  156. help
  157. This enables support for systems based on the Hilscher NetX Soc
  158. config ARCH_H720X
  159. bool "Hynix HMS720x-based"
  160. select ISA_DMA_API
  161. help
  162. This enables support for systems based on the Hynix HMS720x
  163. config ARCH_IMX
  164. bool "IMX"
  165. help
  166. Support for Motorola's i.MX family of processors (MX1, MXL).
  167. config ARCH_IOP32X
  168. bool "IOP32x-based"
  169. depends on MMU
  170. select PLAT_IOP
  171. select PCI
  172. help
  173. Support for Intel's 80219 and IOP32X (XScale) family of
  174. processors.
  175. config ARCH_IOP33X
  176. bool "IOP33x-based"
  177. depends on MMU
  178. select PLAT_IOP
  179. select PCI
  180. help
  181. Support for Intel's IOP33X (XScale) family of processors.
  182. config ARCH_IOP13XX
  183. bool "IOP13xx-based"
  184. select PCI
  185. help
  186. Support for Intel's IOP13XX (XScale) family of processors.
  187. config ARCH_IXP4XX
  188. bool "IXP4xx-based"
  189. depends on MMU
  190. select GENERIC_TIME
  191. help
  192. Support for Intel's IXP4XX (XScale) family of processors.
  193. config ARCH_IXP2000
  194. bool "IXP2400/2800-based"
  195. depends on MMU
  196. select PCI
  197. help
  198. Support for Intel's IXP2400/2800 (XScale) family of processors.
  199. config ARCH_IXP23XX
  200. bool "IXP23XX-based"
  201. depends on MMU
  202. select PCI
  203. help
  204. Support for Intel's IXP23xx (XScale) family of processors.
  205. config ARCH_L7200
  206. bool "LinkUp-L7200"
  207. select FIQ
  208. help
  209. Say Y here if you intend to run this kernel on a LinkUp Systems
  210. L7200 Software Development Board which uses an ARM720T processor.
  211. Information on this board can be obtained at:
  212. <http://www.linkupsys.com/>
  213. If you have any questions or comments about the Linux kernel port
  214. to this board, send e-mail to <sjhill@cotw.com>.
  215. config ARCH_PNX4008
  216. bool "Philips Nexperia PNX4008 Mobile"
  217. help
  218. This enables support for Philips PNX4008 mobile platform.
  219. config ARCH_PXA
  220. bool "PXA2xx-based"
  221. depends on MMU
  222. select ARCH_MTD_XIP
  223. help
  224. Support for Intel's PXA2XX processor line.
  225. config ARCH_RPC
  226. bool "RiscPC"
  227. select ARCH_ACORN
  228. select FIQ
  229. select TIMER_ACORN
  230. select ARCH_MAY_HAVE_PC_FDC
  231. select ISA_DMA_API
  232. help
  233. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  234. CD-ROM interface, serial and parallel port, and the floppy drive.
  235. config ARCH_SA1100
  236. bool "SA1100-based"
  237. select ISA
  238. select ARCH_DISCONTIGMEM_ENABLE
  239. select ARCH_MTD_XIP
  240. help
  241. Support for StrongARM 11x0 based boards.
  242. config ARCH_S3C2410
  243. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442"
  244. help
  245. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  246. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  247. the Samsung SMDK2410 development board (and derivatives).
  248. config ARCH_SHARK
  249. bool "Shark"
  250. select ISA
  251. select ISA_DMA
  252. select PCI
  253. help
  254. Support for the StrongARM based Digital DNARD machine, also known
  255. as "Shark" (<http://www.shark-linux.de/shark.html>).
  256. config ARCH_LH7A40X
  257. bool "Sharp LH7A40X"
  258. help
  259. Say Y here for systems based on one of the Sharp LH7A40X
  260. System on a Chip processors. These CPUs include an ARM922T
  261. core with a wide array of integrated devices for
  262. hand-held and low-power applications.
  263. config ARCH_OMAP
  264. bool "TI OMAP"
  265. help
  266. Support for TI's OMAP platform (OMAP1 and OMAP2).
  267. endchoice
  268. source "arch/arm/mach-clps711x/Kconfig"
  269. source "arch/arm/mach-ep93xx/Kconfig"
  270. source "arch/arm/mach-footbridge/Kconfig"
  271. source "arch/arm/mach-integrator/Kconfig"
  272. source "arch/arm/mach-iop32x/Kconfig"
  273. source "arch/arm/mach-iop33x/Kconfig"
  274. source "arch/arm/mach-iop13xx/Kconfig"
  275. source "arch/arm/mach-ixp4xx/Kconfig"
  276. source "arch/arm/mach-ixp2000/Kconfig"
  277. source "arch/arm/mach-ixp23xx/Kconfig"
  278. source "arch/arm/mach-pxa/Kconfig"
  279. source "arch/arm/mach-sa1100/Kconfig"
  280. source "arch/arm/plat-omap/Kconfig"
  281. source "arch/arm/mach-omap1/Kconfig"
  282. source "arch/arm/mach-omap2/Kconfig"
  283. source "arch/arm/mach-s3c2410/Kconfig"
  284. source "arch/arm/mach-lh7a40x/Kconfig"
  285. source "arch/arm/mach-imx/Kconfig"
  286. source "arch/arm/mach-h720x/Kconfig"
  287. source "arch/arm/mach-versatile/Kconfig"
  288. source "arch/arm/mach-aaec2000/Kconfig"
  289. source "arch/arm/mach-realview/Kconfig"
  290. source "arch/arm/mach-at91rm9200/Kconfig"
  291. source "arch/arm/mach-netx/Kconfig"
  292. # Definitions to make life easier
  293. config ARCH_ACORN
  294. bool
  295. config PLAT_IOP
  296. bool
  297. source arch/arm/mm/Kconfig
  298. config IWMMXT
  299. bool "Enable iWMMXt support"
  300. depends CPU_XSCALE || CPU_XSC3
  301. default y if PXA27x
  302. help
  303. Enable support for iWMMXt context switching at run time if
  304. running on a CPU that supports it.
  305. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  306. config XSCALE_PMU
  307. bool
  308. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  309. default y
  310. if !MMU
  311. source "arch/arm/Kconfig-nommu"
  312. endif
  313. endmenu
  314. source "arch/arm/common/Kconfig"
  315. config FORCE_MAX_ZONEORDER
  316. int
  317. depends on SA1111
  318. default "9"
  319. menu "Bus support"
  320. config ARM_AMBA
  321. bool
  322. config ISA
  323. bool
  324. help
  325. Find out whether you have ISA slots on your motherboard. ISA is the
  326. name of a bus system, i.e. the way the CPU talks to the other stuff
  327. inside your box. Other bus systems are PCI, EISA, MicroChannel
  328. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  329. newer boards don't support it. If you have ISA, say Y, otherwise N.
  330. # Select ISA DMA controller support
  331. config ISA_DMA
  332. bool
  333. select ISA_DMA_API
  334. # Select ISA DMA interface
  335. config ISA_DMA_API
  336. bool
  337. config PCI
  338. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX
  339. help
  340. Find out whether you have a PCI motherboard. PCI is the name of a
  341. bus system, i.e. the way the CPU talks to the other stuff inside
  342. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  343. VESA. If you have PCI, say Y, otherwise N.
  344. The PCI-HOWTO, available from
  345. <http://www.tldp.org/docs.html#howto>, contains valuable
  346. information about which PCI hardware does work under Linux and which
  347. doesn't.
  348. # Select the host bridge type
  349. config PCI_HOST_VIA82C505
  350. bool
  351. depends on PCI && ARCH_SHARK
  352. default y
  353. source "drivers/pci/Kconfig"
  354. source "drivers/pcmcia/Kconfig"
  355. endmenu
  356. menu "Kernel Features"
  357. config SMP
  358. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  359. depends on EXPERIMENTAL && REALVIEW_MPCORE
  360. help
  361. This enables support for systems with more than one CPU. If you have
  362. a system with only one CPU, like most personal computers, say N. If
  363. you have a system with more than one CPU, say Y.
  364. If you say N here, the kernel will run on single and multiprocessor
  365. machines, but will use only one CPU of a multiprocessor machine. If
  366. you say Y here, the kernel will run on many, but not all, single
  367. processor machines. On a single processor machine, the kernel will
  368. run faster if you say N here.
  369. See also the <file:Documentation/smp.txt>,
  370. <file:Documentation/i386/IO-APIC.txt>,
  371. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  372. <http://www.linuxdoc.org/docs.html#howto>.
  373. If you don't know what to do here, say N.
  374. config NR_CPUS
  375. int "Maximum number of CPUs (2-32)"
  376. range 2 32
  377. depends on SMP
  378. default "4"
  379. config HOTPLUG_CPU
  380. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  381. depends on SMP && HOTPLUG && EXPERIMENTAL
  382. help
  383. Say Y here to experiment with turning CPUs off and on. CPUs
  384. can be controlled through /sys/devices/system/cpu.
  385. config LOCAL_TIMERS
  386. bool "Use local timer interrupts"
  387. depends on SMP && REALVIEW_MPCORE
  388. default y
  389. help
  390. Enable support for local timers on SMP platforms, rather then the
  391. legacy IPI broadcast method. Local timers allows the system
  392. accounting to be spread across the timer interval, preventing a
  393. "thundering herd" at every timer tick.
  394. config PREEMPT
  395. bool "Preemptible Kernel (EXPERIMENTAL)"
  396. depends on EXPERIMENTAL
  397. help
  398. This option reduces the latency of the kernel when reacting to
  399. real-time or interactive events by allowing a low priority process to
  400. be preempted even if it is in kernel mode executing a system call.
  401. This allows applications to run more reliably even when the system is
  402. under load.
  403. Say Y here if you are building a kernel for a desktop, embedded
  404. or real-time system. Say N if you are unsure.
  405. config NO_IDLE_HZ
  406. bool "Dynamic tick timer"
  407. help
  408. Select this option if you want to disable continuous timer ticks
  409. and have them programmed to occur as required. This option saves
  410. power as the system can remain in idle state for longer.
  411. By default dynamic tick is disabled during the boot, and can be
  412. manually enabled with:
  413. echo 1 > /sys/devices/system/timer/timer0/dyn_tick
  414. Alternatively, if you want dynamic tick automatically enabled
  415. during boot, pass "dyntick=enable" via the kernel command string.
  416. Please note that dynamic tick may affect the accuracy of
  417. timekeeping on some platforms depending on the implementation.
  418. Currently at least OMAP, PXA2xx and SA11x0 platforms are known
  419. to have accurate timekeeping with dynamic tick.
  420. config HZ
  421. int
  422. default 128 if ARCH_L7200
  423. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  424. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  425. default 100
  426. config AEABI
  427. bool "Use the ARM EABI to compile the kernel"
  428. help
  429. This option allows for the kernel to be compiled using the latest
  430. ARM ABI (aka EABI). This is only useful if you are using a user
  431. space environment that is also compiled with EABI.
  432. Since there are major incompatibilities between the legacy ABI and
  433. EABI, especially with regard to structure member alignment, this
  434. option also changes the kernel syscall calling convention to
  435. disambiguate both ABIs and allow for backward compatibility support
  436. (selected with CONFIG_OABI_COMPAT).
  437. To use this you need GCC version 4.0.0 or later.
  438. config OABI_COMPAT
  439. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  440. depends on AEABI && EXPERIMENTAL
  441. default y
  442. help
  443. This option preserves the old syscall interface along with the
  444. new (ARM EABI) one. It also provides a compatibility layer to
  445. intercept syscalls that have structure arguments which layout
  446. in memory differs between the legacy ABI and the new ARM EABI
  447. (only for non "thumb" binaries). This option adds a tiny
  448. overhead to all syscalls and produces a slightly larger kernel.
  449. If you know you'll be using only pure EABI user space then you
  450. can say N here. If this option is not selected and you attempt
  451. to execute a legacy ABI binary then the result will be
  452. UNPREDICTABLE (in fact it can be predicted that it won't work
  453. at all). If in doubt say Y.
  454. config ARCH_DISCONTIGMEM_ENABLE
  455. bool
  456. default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
  457. help
  458. Say Y to support efficient handling of discontiguous physical memory,
  459. for architectures which are either NUMA (Non-Uniform Memory Access)
  460. or have huge holes in the physical address space for other reasons.
  461. See <file:Documentation/vm/numa> for more.
  462. config NODES_SHIFT
  463. int
  464. default "4" if ARCH_LH7A40X
  465. default "2"
  466. depends on NEED_MULTIPLE_NODES
  467. source "mm/Kconfig"
  468. config LEDS
  469. bool "Timer and CPU usage LEDs"
  470. depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
  471. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  472. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  473. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  474. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  475. ARCH_AT91 || MACH_TRIZEPS4
  476. help
  477. If you say Y here, the LEDs on your machine will be used
  478. to provide useful information about your current system status.
  479. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  480. be able to select which LEDs are active using the options below. If
  481. you are compiling a kernel for the EBSA-110 or the LART however, the
  482. red LED will simply flash regularly to indicate that the system is
  483. still functional. It is safe to say Y here if you have a CATS
  484. system, but the driver will do nothing.
  485. config LEDS_TIMER
  486. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  487. MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
  488. depends on LEDS
  489. default y if ARCH_EBSA110
  490. help
  491. If you say Y here, one of the system LEDs (the green one on the
  492. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  493. will flash regularly to indicate that the system is still
  494. operational. This is mainly useful to kernel hackers who are
  495. debugging unstable kernels.
  496. The LART uses the same LED for both Timer LED and CPU usage LED
  497. functions. You may choose to use both, but the Timer LED function
  498. will overrule the CPU usage LED.
  499. config LEDS_CPU
  500. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  501. !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
  502. depends on LEDS
  503. help
  504. If you say Y here, the red LED will be used to give a good real
  505. time indication of CPU usage, by lighting whenever the idle task
  506. is not currently executing.
  507. The LART uses the same LED for both Timer LED and CPU usage LED
  508. functions. You may choose to use both, but the Timer LED function
  509. will overrule the CPU usage LED.
  510. config ALIGNMENT_TRAP
  511. bool
  512. depends on CPU_CP15_MMU
  513. default y if !ARCH_EBSA110
  514. help
  515. ARM processors cannot fetch/store information which is not
  516. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  517. address divisible by 4. On 32-bit ARM processors, these non-aligned
  518. fetch/store instructions will be emulated in software if you say
  519. here, which has a severe performance impact. This is necessary for
  520. correct operation of some network protocols. With an IP-only
  521. configuration it is safe to say N, otherwise say Y.
  522. endmenu
  523. menu "Boot options"
  524. # Compressed boot loader in ROM. Yes, we really want to ask about
  525. # TEXT and BSS so we preserve their values in the config files.
  526. config ZBOOT_ROM_TEXT
  527. hex "Compressed ROM boot loader base address"
  528. default "0"
  529. help
  530. The physical address at which the ROM-able zImage is to be
  531. placed in the target. Platforms which normally make use of
  532. ROM-able zImage formats normally set this to a suitable
  533. value in their defconfig file.
  534. If ZBOOT_ROM is not enabled, this has no effect.
  535. config ZBOOT_ROM_BSS
  536. hex "Compressed ROM boot loader BSS address"
  537. default "0"
  538. help
  539. The base address of an area of read/write memory in the target
  540. for the ROM-able zImage which must be available while the
  541. decompressor is running. It must be large enough to hold the
  542. entire decompressed kernel plus an additional 128 KiB.
  543. Platforms which normally make use of ROM-able zImage formats
  544. normally set this to a suitable value in their defconfig file.
  545. If ZBOOT_ROM is not enabled, this has no effect.
  546. config ZBOOT_ROM
  547. bool "Compressed boot loader in ROM/flash"
  548. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  549. help
  550. Say Y here if you intend to execute your compressed kernel image
  551. (zImage) directly from ROM or flash. If unsure, say N.
  552. config CMDLINE
  553. string "Default kernel command string"
  554. default ""
  555. help
  556. On some architectures (EBSA110 and CATS), there is currently no way
  557. for the boot loader to pass arguments to the kernel. For these
  558. architectures, you should supply some command-line options at build
  559. time by entering them here. As a minimum, you should specify the
  560. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  561. config XIP_KERNEL
  562. bool "Kernel Execute-In-Place from ROM"
  563. depends on !ZBOOT_ROM
  564. help
  565. Execute-In-Place allows the kernel to run from non-volatile storage
  566. directly addressable by the CPU, such as NOR flash. This saves RAM
  567. space since the text section of the kernel is not loaded from flash
  568. to RAM. Read-write sections, such as the data section and stack,
  569. are still copied to RAM. The XIP kernel is not compressed since
  570. it has to run directly from flash, so it will take more space to
  571. store it. The flash address used to link the kernel object files,
  572. and for storing it, is configuration dependent. Therefore, if you
  573. say Y here, you must know the proper physical address where to
  574. store the kernel image depending on your own flash memory usage.
  575. Also note that the make target becomes "make xipImage" rather than
  576. "make zImage" or "make Image". The final kernel binary to put in
  577. ROM memory will be arch/arm/boot/xipImage.
  578. If unsure, say N.
  579. config XIP_PHYS_ADDR
  580. hex "XIP Kernel Physical Location"
  581. depends on XIP_KERNEL
  582. default "0x00080000"
  583. help
  584. This is the physical address in your flash memory the kernel will
  585. be linked for and stored to. This address is dependent on your
  586. own flash usage.
  587. endmenu
  588. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX )
  589. menu "CPU Frequency scaling"
  590. source "drivers/cpufreq/Kconfig"
  591. config CPU_FREQ_SA1100
  592. bool
  593. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  594. default y
  595. config CPU_FREQ_SA1110
  596. bool
  597. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  598. default y
  599. config CPU_FREQ_INTEGRATOR
  600. tristate "CPUfreq driver for ARM Integrator CPUs"
  601. depends on ARCH_INTEGRATOR && CPU_FREQ
  602. default y
  603. help
  604. This enables the CPUfreq driver for ARM Integrator CPUs.
  605. For details, take a look at <file:Documentation/cpu-freq>.
  606. If in doubt, say Y.
  607. config CPU_FREQ_IMX
  608. tristate "CPUfreq driver for i.MX CPUs"
  609. depends on ARCH_IMX && CPU_FREQ
  610. default n
  611. help
  612. This enables the CPUfreq driver for i.MX CPUs.
  613. If in doubt, say N.
  614. endmenu
  615. endif
  616. menu "Floating point emulation"
  617. comment "At least one emulation must be selected"
  618. config FPE_NWFPE
  619. bool "NWFPE math emulation"
  620. depends on !AEABI || OABI_COMPAT
  621. ---help---
  622. Say Y to include the NWFPE floating point emulator in the kernel.
  623. This is necessary to run most binaries. Linux does not currently
  624. support floating point hardware so you need to say Y here even if
  625. your machine has an FPA or floating point co-processor podule.
  626. You may say N here if you are going to load the Acorn FPEmulator
  627. early in the bootup.
  628. config FPE_NWFPE_XP
  629. bool "Support extended precision"
  630. depends on FPE_NWFPE
  631. help
  632. Say Y to include 80-bit support in the kernel floating-point
  633. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  634. Note that gcc does not generate 80-bit operations by default,
  635. so in most cases this option only enlarges the size of the
  636. floating point emulator without any good reason.
  637. You almost surely want to say N here.
  638. config FPE_FASTFPE
  639. bool "FastFPE math emulation (EXPERIMENTAL)"
  640. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  641. ---help---
  642. Say Y here to include the FAST floating point emulator in the kernel.
  643. This is an experimental much faster emulator which now also has full
  644. precision for the mantissa. It does not support any exceptions.
  645. It is very simple, and approximately 3-6 times faster than NWFPE.
  646. It should be sufficient for most programs. It may be not suitable
  647. for scientific calculations, but you have to check this for yourself.
  648. If you do not feel you need a faster FP emulation you should better
  649. choose NWFPE.
  650. config VFP
  651. bool "VFP-format floating point maths"
  652. depends on CPU_V6 || CPU_ARM926T
  653. help
  654. Say Y to include VFP support code in the kernel. This is needed
  655. if your hardware includes a VFP unit.
  656. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  657. release notes and additional status information.
  658. Say N if your target does not have VFP hardware.
  659. endmenu
  660. menu "Userspace binary formats"
  661. source "fs/Kconfig.binfmt"
  662. config ARTHUR
  663. tristate "RISC OS personality"
  664. depends on !AEABI
  665. help
  666. Say Y here to include the kernel code necessary if you want to run
  667. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  668. experimental; if this sounds frightening, say N and sleep in peace.
  669. You can also say M here to compile this support as a module (which
  670. will be called arthur).
  671. endmenu
  672. menu "Power management options"
  673. source "kernel/power/Kconfig"
  674. config APM
  675. tristate "Advanced Power Management Emulation"
  676. ---help---
  677. APM is a BIOS specification for saving power using several different
  678. techniques. This is mostly useful for battery powered laptops with
  679. APM compliant BIOSes. If you say Y here, the system time will be
  680. reset after a RESUME operation, the /proc/apm device will provide
  681. battery status information, and user-space programs will receive
  682. notification of APM "events" (e.g. battery status change).
  683. In order to use APM, you will need supporting software. For location
  684. and more information, read <file:Documentation/pm.txt> and the
  685. Battery Powered Linux mini-HOWTO, available from
  686. <http://www.tldp.org/docs.html#howto>.
  687. This driver does not spin down disk drives (see the hdparm(8)
  688. manpage ("man 8 hdparm") for that), and it doesn't turn off
  689. VESA-compliant "green" monitors.
  690. Generally, if you don't have a battery in your machine, there isn't
  691. much point in using this driver and you should say N. If you get
  692. random kernel OOPSes or reboots that don't seem to be related to
  693. anything, try disabling/enabling this option (or disabling/enabling
  694. APM in your BIOS).
  695. endmenu
  696. source "net/Kconfig"
  697. menu "Device Drivers"
  698. source "drivers/base/Kconfig"
  699. source "drivers/connector/Kconfig"
  700. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  701. source "drivers/mtd/Kconfig"
  702. endif
  703. source "drivers/parport/Kconfig"
  704. source "drivers/pnp/Kconfig"
  705. source "drivers/block/Kconfig"
  706. source "drivers/acorn/block/Kconfig"
  707. if PCMCIA || ARCH_CLPS7500 || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX \
  708. || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
  709. || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
  710. || ARCH_IXP23XX
  711. source "drivers/ide/Kconfig"
  712. endif
  713. source "drivers/scsi/Kconfig"
  714. source "drivers/ata/Kconfig"
  715. source "drivers/md/Kconfig"
  716. source "drivers/message/fusion/Kconfig"
  717. source "drivers/ieee1394/Kconfig"
  718. source "drivers/message/i2o/Kconfig"
  719. source "drivers/net/Kconfig"
  720. source "drivers/isdn/Kconfig"
  721. # input before char - char/joystick depends on it. As does USB.
  722. source "drivers/input/Kconfig"
  723. source "drivers/char/Kconfig"
  724. source "drivers/i2c/Kconfig"
  725. source "drivers/spi/Kconfig"
  726. source "drivers/w1/Kconfig"
  727. source "drivers/hwmon/Kconfig"
  728. #source "drivers/l3/Kconfig"
  729. source "drivers/misc/Kconfig"
  730. source "drivers/mfd/Kconfig"
  731. source "drivers/leds/Kconfig"
  732. source "drivers/media/Kconfig"
  733. source "drivers/video/Kconfig"
  734. source "sound/Kconfig"
  735. source "drivers/hid/Kconfig"
  736. source "drivers/usb/Kconfig"
  737. source "drivers/mmc/Kconfig"
  738. source "drivers/rtc/Kconfig"
  739. endmenu
  740. source "fs/Kconfig"
  741. source "arch/arm/oprofile/Kconfig"
  742. source "arch/arm/Kconfig.debug"
  743. source "security/Kconfig"
  744. source "crypto/Kconfig"
  745. source "lib/Kconfig"