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