Kconfig 25 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_TIME
  21. bool
  22. default n
  23. config MMU
  24. bool
  25. default y
  26. config EISA
  27. bool
  28. ---help---
  29. The Extended Industry Standard Architecture (EISA) bus was
  30. developed as an open alternative to the IBM MicroChannel bus.
  31. The EISA bus provided some of the features of the IBM MicroChannel
  32. bus while maintaining backward compatibility with cards made for
  33. the older ISA bus. The EISA bus saw limited use between 1988 and
  34. 1995 when it was made obsolete by the PCI bus.
  35. Say Y here if you are building a kernel for an EISA-based machine.
  36. Otherwise, say N.
  37. config SBUS
  38. bool
  39. config MCA
  40. bool
  41. help
  42. MicroChannel Architecture is found in some IBM PS/2 machines and
  43. laptops. It is a bus system similar to PCI or ISA. See
  44. <file:Documentation/mca.txt> (and especially the web page given
  45. there) before attempting to build an MCA bus kernel.
  46. config GENERIC_HARDIRQS
  47. bool
  48. default y
  49. config TRACE_IRQFLAGS_SUPPORT
  50. bool
  51. default y
  52. config HARDIRQS_SW_RESEND
  53. bool
  54. default y
  55. config GENERIC_IRQ_PROBE
  56. bool
  57. default y
  58. config RWSEM_GENERIC_SPINLOCK
  59. bool
  60. default y
  61. config RWSEM_XCHGADD_ALGORITHM
  62. bool
  63. config ARCH_HAS_ILOG2_U32
  64. bool
  65. default n
  66. config ARCH_HAS_ILOG2_U64
  67. bool
  68. default n
  69. config GENERIC_HWEIGHT
  70. bool
  71. default y
  72. config GENERIC_CALIBRATE_DELAY
  73. bool
  74. default y
  75. config GENERIC_BUST_SPINLOCK
  76. bool
  77. config ARCH_MAY_HAVE_PC_FDC
  78. bool
  79. config ZONE_DMA
  80. bool
  81. default y
  82. config GENERIC_ISA_DMA
  83. bool
  84. config FIQ
  85. bool
  86. config ARCH_MTD_XIP
  87. bool
  88. config VECTORS_BASE
  89. hex
  90. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  91. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  92. default 0x00000000
  93. help
  94. The base address of exception vectors.
  95. source "init/Kconfig"
  96. menu "System Type"
  97. choice
  98. prompt "ARM system type"
  99. default ARCH_VERSATILE
  100. config ARCH_AAEC2000
  101. bool "Agilent AAEC-2000 based"
  102. select ARM_AMBA
  103. help
  104. This enables support for systems based on the Agilent AAEC-2000
  105. config ARCH_INTEGRATOR
  106. bool "ARM Ltd. Integrator family"
  107. select ARM_AMBA
  108. select ICST525
  109. help
  110. Support for ARM's Integrator platform.
  111. config ARCH_REALVIEW
  112. bool "ARM Ltd. RealView family"
  113. select ARM_AMBA
  114. select ICST307
  115. help
  116. This enables support for ARM Ltd RealView boards.
  117. config ARCH_VERSATILE
  118. bool "ARM Ltd. Versatile family"
  119. select ARM_AMBA
  120. select ARM_VIC
  121. select ICST307
  122. help
  123. This enables support for ARM Ltd Versatile board.
  124. config ARCH_AT91
  125. bool "Atmel AT91"
  126. help
  127. This enables support for systems based on the Atmel AT91RM9200
  128. and AT91SAM9xxx processors.
  129. config ARCH_CLPS7500
  130. bool "Cirrus CL-PS7500FE"
  131. select TIMER_ACORN
  132. select ISA
  133. help
  134. Support for the Cirrus Logic PS7500FE system-on-a-chip.
  135. config ARCH_CLPS711X
  136. bool "Cirrus Logic CLPS711x/EP721x-based"
  137. help
  138. Support for Cirrus Logic 711x/721x based boards.
  139. config ARCH_CO285
  140. bool "Co-EBSA285"
  141. select FOOTBRIDGE
  142. select FOOTBRIDGE_ADDIN
  143. help
  144. Support for Intel's EBSA285 companion chip.
  145. config ARCH_EBSA110
  146. bool "EBSA-110"
  147. select ISA
  148. help
  149. This is an evaluation board for the StrongARM processor available
  150. from Digital. It has limited hardware on-board, including an
  151. Ethernet interface, two PCMCIA sockets, two serial ports and a
  152. parallel port.
  153. config ARCH_EP93XX
  154. bool "EP93xx-based"
  155. select ARM_AMBA
  156. select ARM_VIC
  157. help
  158. This enables support for the Cirrus EP93xx series of CPUs.
  159. config ARCH_FOOTBRIDGE
  160. bool "FootBridge"
  161. select FOOTBRIDGE
  162. help
  163. Support for systems based on the DC21285 companion chip
  164. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  165. config ARCH_NETX
  166. bool "Hilscher NetX based"
  167. select ARM_VIC
  168. help
  169. This enables support for systems based on the Hilscher NetX Soc
  170. config ARCH_H720X
  171. bool "Hynix HMS720x-based"
  172. select ISA_DMA_API
  173. help
  174. This enables support for systems based on the Hynix HMS720x
  175. config ARCH_IMX
  176. bool "IMX"
  177. help
  178. Support for Motorola's i.MX family of processors (MX1, MXL).
  179. config ARCH_IOP32X
  180. bool "IOP32x-based"
  181. depends on MMU
  182. select PLAT_IOP
  183. select PCI
  184. help
  185. Support for Intel's 80219 and IOP32X (XScale) family of
  186. processors.
  187. config ARCH_IOP33X
  188. bool "IOP33x-based"
  189. depends on MMU
  190. select PLAT_IOP
  191. select PCI
  192. help
  193. Support for Intel's IOP33X (XScale) family of processors.
  194. config ARCH_IOP13XX
  195. bool "IOP13xx-based"
  196. select PCI
  197. help
  198. Support for Intel's IOP13XX (XScale) family of processors.
  199. config ARCH_IXP4XX
  200. bool "IXP4xx-based"
  201. depends on MMU
  202. select GENERIC_TIME
  203. help
  204. Support for Intel's IXP4XX (XScale) family of processors.
  205. config ARCH_IXP2000
  206. bool "IXP2400/2800-based"
  207. depends on MMU
  208. select PCI
  209. help
  210. Support for Intel's IXP2400/2800 (XScale) family of processors.
  211. config ARCH_IXP23XX
  212. bool "IXP23XX-based"
  213. depends on MMU
  214. select PCI
  215. help
  216. Support for Intel's IXP23xx (XScale) family of processors.
  217. config ARCH_L7200
  218. bool "LinkUp-L7200"
  219. select FIQ
  220. help
  221. Say Y here if you intend to run this kernel on a LinkUp Systems
  222. L7200 Software Development Board which uses an ARM720T processor.
  223. Information on this board can be obtained at:
  224. <http://www.linkupsys.com/>
  225. If you have any questions or comments about the Linux kernel port
  226. to this board, send e-mail to <sjhill@cotw.com>.
  227. config ARCH_PNX4008
  228. bool "Philips Nexperia PNX4008 Mobile"
  229. help
  230. This enables support for Philips PNX4008 mobile platform.
  231. config ARCH_PXA
  232. bool "PXA2xx-based"
  233. depends on MMU
  234. select ARCH_MTD_XIP
  235. help
  236. Support for Intel's PXA2XX processor line.
  237. config ARCH_RPC
  238. bool "RiscPC"
  239. select ARCH_ACORN
  240. select FIQ
  241. select TIMER_ACORN
  242. select ARCH_MAY_HAVE_PC_FDC
  243. select ISA_DMA_API
  244. help
  245. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  246. CD-ROM interface, serial and parallel port, and the floppy drive.
  247. config ARCH_SA1100
  248. bool "SA1100-based"
  249. select ISA
  250. select ARCH_DISCONTIGMEM_ENABLE
  251. select ARCH_MTD_XIP
  252. help
  253. Support for StrongARM 11x0 based boards.
  254. config ARCH_S3C2410
  255. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442"
  256. help
  257. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  258. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  259. the Samsung SMDK2410 development board (and derivatives).
  260. config ARCH_SHARK
  261. bool "Shark"
  262. select ISA
  263. select ISA_DMA
  264. select PCI
  265. help
  266. Support for the StrongARM based Digital DNARD machine, also known
  267. as "Shark" (<http://www.shark-linux.de/shark.html>).
  268. config ARCH_LH7A40X
  269. bool "Sharp LH7A40X"
  270. help
  271. Say Y here for systems based on one of the Sharp LH7A40X
  272. System on a Chip processors. These CPUs include an ARM922T
  273. core with a wide array of integrated devices for
  274. hand-held and low-power applications.
  275. config ARCH_OMAP
  276. bool "TI OMAP"
  277. help
  278. Support for TI's OMAP platform (OMAP1 and OMAP2).
  279. endchoice
  280. source "arch/arm/mach-clps711x/Kconfig"
  281. source "arch/arm/mach-ep93xx/Kconfig"
  282. source "arch/arm/mach-footbridge/Kconfig"
  283. source "arch/arm/mach-integrator/Kconfig"
  284. source "arch/arm/mach-iop32x/Kconfig"
  285. source "arch/arm/mach-iop33x/Kconfig"
  286. source "arch/arm/mach-iop13xx/Kconfig"
  287. source "arch/arm/mach-ixp4xx/Kconfig"
  288. source "arch/arm/mach-ixp2000/Kconfig"
  289. source "arch/arm/mach-ixp23xx/Kconfig"
  290. source "arch/arm/mach-pxa/Kconfig"
  291. source "arch/arm/mach-sa1100/Kconfig"
  292. source "arch/arm/plat-omap/Kconfig"
  293. source "arch/arm/mach-omap1/Kconfig"
  294. source "arch/arm/mach-omap2/Kconfig"
  295. source "arch/arm/mach-s3c2410/Kconfig"
  296. source "arch/arm/mach-lh7a40x/Kconfig"
  297. source "arch/arm/mach-imx/Kconfig"
  298. source "arch/arm/mach-h720x/Kconfig"
  299. source "arch/arm/mach-versatile/Kconfig"
  300. source "arch/arm/mach-aaec2000/Kconfig"
  301. source "arch/arm/mach-realview/Kconfig"
  302. source "arch/arm/mach-at91rm9200/Kconfig"
  303. source "arch/arm/mach-netx/Kconfig"
  304. # Definitions to make life easier
  305. config ARCH_ACORN
  306. bool
  307. config PLAT_IOP
  308. bool
  309. source arch/arm/mm/Kconfig
  310. config IWMMXT
  311. bool "Enable iWMMXt support"
  312. depends CPU_XSCALE || CPU_XSC3
  313. default y if PXA27x
  314. help
  315. Enable support for iWMMXt context switching at run time if
  316. running on a CPU that supports it.
  317. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  318. config XSCALE_PMU
  319. bool
  320. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  321. default y
  322. if !MMU
  323. source "arch/arm/Kconfig-nommu"
  324. endif
  325. endmenu
  326. source "arch/arm/common/Kconfig"
  327. config FORCE_MAX_ZONEORDER
  328. int
  329. depends on SA1111
  330. default "9"
  331. menu "Bus support"
  332. config ARM_AMBA
  333. bool
  334. config ISA
  335. bool
  336. help
  337. Find out whether you have ISA slots on your motherboard. ISA is the
  338. name of a bus system, i.e. the way the CPU talks to the other stuff
  339. inside your box. Other bus systems are PCI, EISA, MicroChannel
  340. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  341. newer boards don't support it. If you have ISA, say Y, otherwise N.
  342. # Select ISA DMA controller support
  343. config ISA_DMA
  344. bool
  345. select ISA_DMA_API
  346. # Select ISA DMA interface
  347. config ISA_DMA_API
  348. bool
  349. config PCI
  350. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX
  351. help
  352. Find out whether you have a PCI motherboard. PCI is the name of a
  353. bus system, i.e. the way the CPU talks to the other stuff inside
  354. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  355. VESA. If you have PCI, say Y, otherwise N.
  356. The PCI-HOWTO, available from
  357. <http://www.tldp.org/docs.html#howto>, contains valuable
  358. information about which PCI hardware does work under Linux and which
  359. doesn't.
  360. # Select the host bridge type
  361. config PCI_HOST_VIA82C505
  362. bool
  363. depends on PCI && ARCH_SHARK
  364. default y
  365. source "drivers/pci/Kconfig"
  366. source "drivers/pcmcia/Kconfig"
  367. endmenu
  368. menu "Kernel Features"
  369. config SMP
  370. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  371. depends on EXPERIMENTAL && REALVIEW_MPCORE
  372. help
  373. This enables support for systems with more than one CPU. If you have
  374. a system with only one CPU, like most personal computers, say N. If
  375. you have a system with more than one CPU, say Y.
  376. If you say N here, the kernel will run on single and multiprocessor
  377. machines, but will use only one CPU of a multiprocessor machine. If
  378. you say Y here, the kernel will run on many, but not all, single
  379. processor machines. On a single processor machine, the kernel will
  380. run faster if you say N here.
  381. See also the <file:Documentation/smp.txt>,
  382. <file:Documentation/i386/IO-APIC.txt>,
  383. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  384. <http://www.linuxdoc.org/docs.html#howto>.
  385. If you don't know what to do here, say N.
  386. config NR_CPUS
  387. int "Maximum number of CPUs (2-32)"
  388. range 2 32
  389. depends on SMP
  390. default "4"
  391. config HOTPLUG_CPU
  392. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  393. depends on SMP && HOTPLUG && EXPERIMENTAL
  394. help
  395. Say Y here to experiment with turning CPUs off and on. CPUs
  396. can be controlled through /sys/devices/system/cpu.
  397. config LOCAL_TIMERS
  398. bool "Use local timer interrupts"
  399. depends on SMP && REALVIEW_MPCORE
  400. default y
  401. help
  402. Enable support for local timers on SMP platforms, rather then the
  403. legacy IPI broadcast method. Local timers allows the system
  404. accounting to be spread across the timer interval, preventing a
  405. "thundering herd" at every timer tick.
  406. config PREEMPT
  407. bool "Preemptible Kernel (EXPERIMENTAL)"
  408. depends on EXPERIMENTAL
  409. help
  410. This option reduces the latency of the kernel when reacting to
  411. real-time or interactive events by allowing a low priority process to
  412. be preempted even if it is in kernel mode executing a system call.
  413. This allows applications to run more reliably even when the system is
  414. under load.
  415. Say Y here if you are building a kernel for a desktop, embedded
  416. or real-time system. Say N if you are unsure.
  417. config NO_IDLE_HZ
  418. bool "Dynamic tick timer"
  419. help
  420. Select this option if you want to disable continuous timer ticks
  421. and have them programmed to occur as required. This option saves
  422. power as the system can remain in idle state for longer.
  423. By default dynamic tick is disabled during the boot, and can be
  424. manually enabled with:
  425. echo 1 > /sys/devices/system/timer/timer0/dyn_tick
  426. Alternatively, if you want dynamic tick automatically enabled
  427. during boot, pass "dyntick=enable" via the kernel command string.
  428. Please note that dynamic tick may affect the accuracy of
  429. timekeeping on some platforms depending on the implementation.
  430. Currently at least OMAP, PXA2xx and SA11x0 platforms are known
  431. to have accurate timekeeping with dynamic tick.
  432. config HZ
  433. int
  434. default 128 if ARCH_L7200
  435. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  436. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  437. default 100
  438. config AEABI
  439. bool "Use the ARM EABI to compile the kernel"
  440. help
  441. This option allows for the kernel to be compiled using the latest
  442. ARM ABI (aka EABI). This is only useful if you are using a user
  443. space environment that is also compiled with EABI.
  444. Since there are major incompatibilities between the legacy ABI and
  445. EABI, especially with regard to structure member alignment, this
  446. option also changes the kernel syscall calling convention to
  447. disambiguate both ABIs and allow for backward compatibility support
  448. (selected with CONFIG_OABI_COMPAT).
  449. To use this you need GCC version 4.0.0 or later.
  450. config OABI_COMPAT
  451. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  452. depends on AEABI && EXPERIMENTAL
  453. default y
  454. help
  455. This option preserves the old syscall interface along with the
  456. new (ARM EABI) one. It also provides a compatibility layer to
  457. intercept syscalls that have structure arguments which layout
  458. in memory differs between the legacy ABI and the new ARM EABI
  459. (only for non "thumb" binaries). This option adds a tiny
  460. overhead to all syscalls and produces a slightly larger kernel.
  461. If you know you'll be using only pure EABI user space then you
  462. can say N here. If this option is not selected and you attempt
  463. to execute a legacy ABI binary then the result will be
  464. UNPREDICTABLE (in fact it can be predicted that it won't work
  465. at all). If in doubt say Y.
  466. config ARCH_DISCONTIGMEM_ENABLE
  467. bool
  468. default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
  469. help
  470. Say Y to support efficient handling of discontiguous physical memory,
  471. for architectures which are either NUMA (Non-Uniform Memory Access)
  472. or have huge holes in the physical address space for other reasons.
  473. See <file:Documentation/vm/numa> for more.
  474. config NODES_SHIFT
  475. int
  476. default "4" if ARCH_LH7A40X
  477. default "2"
  478. depends on NEED_MULTIPLE_NODES
  479. source "mm/Kconfig"
  480. config LEDS
  481. bool "Timer and CPU usage LEDs"
  482. depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
  483. ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
  484. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  485. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  486. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  487. ARCH_AT91 || MACH_TRIZEPS4
  488. help
  489. If you say Y here, the LEDs on your machine will be used
  490. to provide useful information about your current system status.
  491. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  492. be able to select which LEDs are active using the options below. If
  493. you are compiling a kernel for the EBSA-110 or the LART however, the
  494. red LED will simply flash regularly to indicate that the system is
  495. still functional. It is safe to say Y here if you have a CATS
  496. system, but the driver will do nothing.
  497. config LEDS_TIMER
  498. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  499. MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
  500. depends on LEDS
  501. default y if ARCH_EBSA110
  502. help
  503. If you say Y here, one of the system LEDs (the green one on the
  504. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  505. will flash regularly to indicate that the system is still
  506. operational. This is mainly useful to kernel hackers who are
  507. debugging unstable kernels.
  508. The LART uses the same LED for both Timer LED and CPU usage LED
  509. functions. You may choose to use both, but the Timer LED function
  510. will overrule the CPU usage LED.
  511. config LEDS_CPU
  512. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  513. !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
  514. depends on LEDS
  515. help
  516. If you say Y here, the red LED will be used to give a good real
  517. time indication of CPU usage, by lighting whenever the idle task
  518. is not currently executing.
  519. The LART uses the same LED for both Timer LED and CPU usage LED
  520. functions. You may choose to use both, but the Timer LED function
  521. will overrule the CPU usage LED.
  522. config ALIGNMENT_TRAP
  523. bool
  524. depends on CPU_CP15_MMU
  525. default y if !ARCH_EBSA110
  526. help
  527. ARM processors cannot fetch/store information which is not
  528. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  529. address divisible by 4. On 32-bit ARM processors, these non-aligned
  530. fetch/store instructions will be emulated in software if you say
  531. here, which has a severe performance impact. This is necessary for
  532. correct operation of some network protocols. With an IP-only
  533. configuration it is safe to say N, otherwise say Y.
  534. endmenu
  535. menu "Boot options"
  536. # Compressed boot loader in ROM. Yes, we really want to ask about
  537. # TEXT and BSS so we preserve their values in the config files.
  538. config ZBOOT_ROM_TEXT
  539. hex "Compressed ROM boot loader base address"
  540. default "0"
  541. help
  542. The physical address at which the ROM-able zImage is to be
  543. placed in the target. Platforms which normally make use of
  544. ROM-able zImage formats normally set this to a suitable
  545. value in their defconfig file.
  546. If ZBOOT_ROM is not enabled, this has no effect.
  547. config ZBOOT_ROM_BSS
  548. hex "Compressed ROM boot loader BSS address"
  549. default "0"
  550. help
  551. The base address of an area of read/write memory in the target
  552. for the ROM-able zImage which must be available while the
  553. decompressor is running. It must be large enough to hold the
  554. entire decompressed kernel plus an additional 128 KiB.
  555. Platforms which normally make use of ROM-able zImage formats
  556. normally set this to a suitable value in their defconfig file.
  557. If ZBOOT_ROM is not enabled, this has no effect.
  558. config ZBOOT_ROM
  559. bool "Compressed boot loader in ROM/flash"
  560. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  561. help
  562. Say Y here if you intend to execute your compressed kernel image
  563. (zImage) directly from ROM or flash. If unsure, say N.
  564. config CMDLINE
  565. string "Default kernel command string"
  566. default ""
  567. help
  568. On some architectures (EBSA110 and CATS), there is currently no way
  569. for the boot loader to pass arguments to the kernel. For these
  570. architectures, you should supply some command-line options at build
  571. time by entering them here. As a minimum, you should specify the
  572. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  573. config XIP_KERNEL
  574. bool "Kernel Execute-In-Place from ROM"
  575. depends on !ZBOOT_ROM
  576. help
  577. Execute-In-Place allows the kernel to run from non-volatile storage
  578. directly addressable by the CPU, such as NOR flash. This saves RAM
  579. space since the text section of the kernel is not loaded from flash
  580. to RAM. Read-write sections, such as the data section and stack,
  581. are still copied to RAM. The XIP kernel is not compressed since
  582. it has to run directly from flash, so it will take more space to
  583. store it. The flash address used to link the kernel object files,
  584. and for storing it, is configuration dependent. Therefore, if you
  585. say Y here, you must know the proper physical address where to
  586. store the kernel image depending on your own flash memory usage.
  587. Also note that the make target becomes "make xipImage" rather than
  588. "make zImage" or "make Image". The final kernel binary to put in
  589. ROM memory will be arch/arm/boot/xipImage.
  590. If unsure, say N.
  591. config XIP_PHYS_ADDR
  592. hex "XIP Kernel Physical Location"
  593. depends on XIP_KERNEL
  594. default "0x00080000"
  595. help
  596. This is the physical address in your flash memory the kernel will
  597. be linked for and stored to. This address is dependent on your
  598. own flash usage.
  599. endmenu
  600. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX )
  601. menu "CPU Frequency scaling"
  602. source "drivers/cpufreq/Kconfig"
  603. config CPU_FREQ_SA1100
  604. bool
  605. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  606. default y
  607. config CPU_FREQ_SA1110
  608. bool
  609. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  610. default y
  611. config CPU_FREQ_INTEGRATOR
  612. tristate "CPUfreq driver for ARM Integrator CPUs"
  613. depends on ARCH_INTEGRATOR && CPU_FREQ
  614. default y
  615. help
  616. This enables the CPUfreq driver for ARM Integrator CPUs.
  617. For details, take a look at <file:Documentation/cpu-freq>.
  618. If in doubt, say Y.
  619. config CPU_FREQ_IMX
  620. tristate "CPUfreq driver for i.MX CPUs"
  621. depends on ARCH_IMX && CPU_FREQ
  622. default n
  623. help
  624. This enables the CPUfreq driver for i.MX CPUs.
  625. If in doubt, say N.
  626. endmenu
  627. endif
  628. menu "Floating point emulation"
  629. comment "At least one emulation must be selected"
  630. config FPE_NWFPE
  631. bool "NWFPE math emulation"
  632. depends on !AEABI || OABI_COMPAT
  633. ---help---
  634. Say Y to include the NWFPE floating point emulator in the kernel.
  635. This is necessary to run most binaries. Linux does not currently
  636. support floating point hardware so you need to say Y here even if
  637. your machine has an FPA or floating point co-processor podule.
  638. You may say N here if you are going to load the Acorn FPEmulator
  639. early in the bootup.
  640. config FPE_NWFPE_XP
  641. bool "Support extended precision"
  642. depends on FPE_NWFPE
  643. help
  644. Say Y to include 80-bit support in the kernel floating-point
  645. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  646. Note that gcc does not generate 80-bit operations by default,
  647. so in most cases this option only enlarges the size of the
  648. floating point emulator without any good reason.
  649. You almost surely want to say N here.
  650. config FPE_FASTFPE
  651. bool "FastFPE math emulation (EXPERIMENTAL)"
  652. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  653. ---help---
  654. Say Y here to include the FAST floating point emulator in the kernel.
  655. This is an experimental much faster emulator which now also has full
  656. precision for the mantissa. It does not support any exceptions.
  657. It is very simple, and approximately 3-6 times faster than NWFPE.
  658. It should be sufficient for most programs. It may be not suitable
  659. for scientific calculations, but you have to check this for yourself.
  660. If you do not feel you need a faster FP emulation you should better
  661. choose NWFPE.
  662. config VFP
  663. bool "VFP-format floating point maths"
  664. depends on CPU_V6 || CPU_ARM926T
  665. help
  666. Say Y to include VFP support code in the kernel. This is needed
  667. if your hardware includes a VFP unit.
  668. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  669. release notes and additional status information.
  670. Say N if your target does not have VFP hardware.
  671. endmenu
  672. menu "Userspace binary formats"
  673. source "fs/Kconfig.binfmt"
  674. config ARTHUR
  675. tristate "RISC OS personality"
  676. depends on !AEABI
  677. help
  678. Say Y here to include the kernel code necessary if you want to run
  679. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  680. experimental; if this sounds frightening, say N and sleep in peace.
  681. You can also say M here to compile this support as a module (which
  682. will be called arthur).
  683. endmenu
  684. menu "Power management options"
  685. source "kernel/power/Kconfig"
  686. endmenu
  687. source "net/Kconfig"
  688. menu "Device Drivers"
  689. source "drivers/base/Kconfig"
  690. source "drivers/connector/Kconfig"
  691. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  692. source "drivers/mtd/Kconfig"
  693. endif
  694. source "drivers/parport/Kconfig"
  695. source "drivers/pnp/Kconfig"
  696. source "drivers/block/Kconfig"
  697. source "drivers/acorn/block/Kconfig"
  698. if PCMCIA || ARCH_CLPS7500 || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX \
  699. || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
  700. || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
  701. || ARCH_IXP23XX
  702. source "drivers/ide/Kconfig"
  703. endif
  704. source "drivers/scsi/Kconfig"
  705. source "drivers/ata/Kconfig"
  706. source "drivers/md/Kconfig"
  707. source "drivers/message/fusion/Kconfig"
  708. source "drivers/ieee1394/Kconfig"
  709. source "drivers/message/i2o/Kconfig"
  710. source "drivers/net/Kconfig"
  711. source "drivers/isdn/Kconfig"
  712. # input before char - char/joystick depends on it. As does USB.
  713. source "drivers/input/Kconfig"
  714. source "drivers/char/Kconfig"
  715. source "drivers/i2c/Kconfig"
  716. source "drivers/spi/Kconfig"
  717. source "drivers/w1/Kconfig"
  718. source "drivers/hwmon/Kconfig"
  719. #source "drivers/l3/Kconfig"
  720. source "drivers/misc/Kconfig"
  721. source "drivers/mfd/Kconfig"
  722. source "drivers/leds/Kconfig"
  723. source "drivers/media/Kconfig"
  724. source "drivers/video/Kconfig"
  725. source "sound/Kconfig"
  726. source "drivers/hid/Kconfig"
  727. source "drivers/usb/Kconfig"
  728. source "drivers/mmc/Kconfig"
  729. source "drivers/rtc/Kconfig"
  730. endmenu
  731. source "fs/Kconfig"
  732. source "arch/arm/oprofile/Kconfig"
  733. source "arch/arm/Kconfig.debug"
  734. source "security/Kconfig"
  735. source "crypto/Kconfig"
  736. source "lib/Kconfig"