Kconfig 43 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 HAVE_AOUT
  10. select HAVE_IDE
  11. select RTC_LIB
  12. select SYS_SUPPORTS_APM_EMULATION
  13. select GENERIC_ATOMIC64 if (!CPU_32v6K)
  14. select HAVE_OPROFILE
  15. select HAVE_ARCH_KGDB
  16. select HAVE_KPROBES if (!XIP_KERNEL)
  17. select HAVE_KRETPROBES if (HAVE_KPROBES)
  18. select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  19. select HAVE_GENERIC_DMA_COHERENT
  20. select HAVE_KERNEL_GZIP
  21. select HAVE_KERNEL_LZO
  22. select HAVE_PERF_EVENTS
  23. select PERF_USE_VMALLOC
  24. help
  25. The ARM series is a line of low-power-consumption RISC chip designs
  26. licensed by ARM Ltd and targeted at embedded applications and
  27. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  28. manufactured, but legacy ARM-based PC hardware remains popular in
  29. Europe. There is an ARM Linux project with a web page at
  30. <http://www.arm.linux.org.uk/>.
  31. config HAVE_PWM
  32. bool
  33. config SYS_SUPPORTS_APM_EMULATION
  34. bool
  35. config GENERIC_GPIO
  36. bool
  37. config GENERIC_TIME
  38. bool
  39. config GENERIC_CLOCKEVENTS
  40. bool
  41. config GENERIC_CLOCKEVENTS_BROADCAST
  42. bool
  43. depends on GENERIC_CLOCKEVENTS
  44. default y if SMP && !LOCAL_TIMERS
  45. config HAVE_TCM
  46. bool
  47. select GENERIC_ALLOCATOR
  48. config HAVE_PROC_CPU
  49. bool
  50. config NO_IOPORT
  51. bool
  52. config EISA
  53. bool
  54. ---help---
  55. The Extended Industry Standard Architecture (EISA) bus was
  56. developed as an open alternative to the IBM MicroChannel bus.
  57. The EISA bus provided some of the features of the IBM MicroChannel
  58. bus while maintaining backward compatibility with cards made for
  59. the older ISA bus. The EISA bus saw limited use between 1988 and
  60. 1995 when it was made obsolete by the PCI bus.
  61. Say Y here if you are building a kernel for an EISA-based machine.
  62. Otherwise, say N.
  63. config SBUS
  64. bool
  65. config MCA
  66. bool
  67. help
  68. MicroChannel Architecture is found in some IBM PS/2 machines and
  69. laptops. It is a bus system similar to PCI or ISA. See
  70. <file:Documentation/mca.txt> (and especially the web page given
  71. there) before attempting to build an MCA bus kernel.
  72. config GENERIC_HARDIRQS
  73. bool
  74. default y
  75. config STACKTRACE_SUPPORT
  76. bool
  77. default y
  78. config HAVE_LATENCYTOP_SUPPORT
  79. bool
  80. depends on !SMP
  81. default y
  82. config LOCKDEP_SUPPORT
  83. bool
  84. default y
  85. config TRACE_IRQFLAGS_SUPPORT
  86. bool
  87. default y
  88. config HARDIRQS_SW_RESEND
  89. bool
  90. default y
  91. config GENERIC_IRQ_PROBE
  92. bool
  93. default y
  94. config GENERIC_LOCKBREAK
  95. bool
  96. default y
  97. depends on SMP && PREEMPT
  98. config RWSEM_GENERIC_SPINLOCK
  99. bool
  100. default y
  101. config RWSEM_XCHGADD_ALGORITHM
  102. bool
  103. config ARCH_HAS_ILOG2_U32
  104. bool
  105. config ARCH_HAS_ILOG2_U64
  106. bool
  107. config ARCH_HAS_CPUFREQ
  108. bool
  109. help
  110. Internal node to signify that the ARCH has CPUFREQ support
  111. and that the relevant menu configurations are displayed for
  112. it.
  113. config GENERIC_HWEIGHT
  114. bool
  115. default y
  116. config GENERIC_CALIBRATE_DELAY
  117. bool
  118. default y
  119. config ARCH_MAY_HAVE_PC_FDC
  120. bool
  121. config ZONE_DMA
  122. bool
  123. config NEED_DMA_MAP_STATE
  124. def_bool y
  125. config GENERIC_ISA_DMA
  126. bool
  127. config FIQ
  128. bool
  129. config ARCH_MTD_XIP
  130. bool
  131. config GENERIC_HARDIRQS_NO__DO_IRQ
  132. def_bool y
  133. config ARM_L1_CACHE_SHIFT_6
  134. bool
  135. help
  136. Setting ARM L1 cache line size to 64 Bytes.
  137. if OPROFILE
  138. config OPROFILE_ARMV6
  139. def_bool y
  140. depends on CPU_V6 && !SMP
  141. select OPROFILE_ARM11_CORE
  142. config OPROFILE_MPCORE
  143. def_bool y
  144. depends on CPU_V6 && SMP
  145. select OPROFILE_ARM11_CORE
  146. config OPROFILE_ARM11_CORE
  147. bool
  148. config OPROFILE_ARMV7
  149. def_bool y
  150. depends on CPU_V7 && !SMP
  151. bool
  152. endif
  153. config VECTORS_BASE
  154. hex
  155. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  156. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  157. default 0x00000000
  158. help
  159. The base address of exception vectors.
  160. source "init/Kconfig"
  161. source "kernel/Kconfig.freezer"
  162. menu "System Type"
  163. config MMU
  164. bool "MMU-based Paged Memory Management Support"
  165. default y
  166. help
  167. Select if you want MMU-based virtualised addressing space
  168. support by paged memory management. If unsure, say 'Y'.
  169. #
  170. # The "ARM system type" choice list is ordered alphabetically by option
  171. # text. Please add new entries in the option alphabetic order.
  172. #
  173. choice
  174. prompt "ARM system type"
  175. default ARCH_VERSATILE
  176. config ARCH_AAEC2000
  177. bool "Agilent AAEC-2000 based"
  178. select CPU_ARM920T
  179. select ARM_AMBA
  180. select HAVE_CLK
  181. help
  182. This enables support for systems based on the Agilent AAEC-2000
  183. config ARCH_INTEGRATOR
  184. bool "ARM Ltd. Integrator family"
  185. select ARM_AMBA
  186. select ARCH_HAS_CPUFREQ
  187. select COMMON_CLKDEV
  188. select ICST525
  189. help
  190. Support for ARM's Integrator platform.
  191. config ARCH_REALVIEW
  192. bool "ARM Ltd. RealView family"
  193. select ARM_AMBA
  194. select COMMON_CLKDEV
  195. select ICST307
  196. select GENERIC_TIME
  197. select GENERIC_CLOCKEVENTS
  198. select ARCH_WANT_OPTIONAL_GPIOLIB
  199. help
  200. This enables support for ARM Ltd RealView boards.
  201. config ARCH_VERSATILE
  202. bool "ARM Ltd. Versatile family"
  203. select ARM_AMBA
  204. select ARM_VIC
  205. select COMMON_CLKDEV
  206. select ICST307
  207. select GENERIC_TIME
  208. select GENERIC_CLOCKEVENTS
  209. select ARCH_WANT_OPTIONAL_GPIOLIB
  210. help
  211. This enables support for ARM Ltd Versatile board.
  212. config ARCH_AT91
  213. bool "Atmel AT91"
  214. select GENERIC_GPIO
  215. select ARCH_REQUIRE_GPIOLIB
  216. select HAVE_CLK
  217. help
  218. This enables support for systems based on the Atmel AT91RM9200,
  219. AT91SAM9 and AT91CAP9 processors.
  220. config ARCH_BCMRING
  221. bool "Broadcom BCMRING"
  222. depends on MMU
  223. select CPU_V6
  224. select ARM_AMBA
  225. select COMMON_CLKDEV
  226. select GENERIC_TIME
  227. select GENERIC_CLOCKEVENTS
  228. select ARCH_WANT_OPTIONAL_GPIOLIB
  229. help
  230. Support for Broadcom's BCMRing platform.
  231. config ARCH_CLPS711X
  232. bool "Cirrus Logic CLPS711x/EP721x-based"
  233. select CPU_ARM720T
  234. help
  235. Support for Cirrus Logic 711x/721x based boards.
  236. config ARCH_GEMINI
  237. bool "Cortina Systems Gemini"
  238. select CPU_FA526
  239. select GENERIC_GPIO
  240. select ARCH_REQUIRE_GPIOLIB
  241. help
  242. Support for the Cortina Systems Gemini family SoCs
  243. config ARCH_EBSA110
  244. bool "EBSA-110"
  245. select CPU_SA110
  246. select ISA
  247. select NO_IOPORT
  248. help
  249. This is an evaluation board for the StrongARM processor available
  250. from Digital. It has limited hardware on-board, including an
  251. Ethernet interface, two PCMCIA sockets, two serial ports and a
  252. parallel port.
  253. config ARCH_EP93XX
  254. bool "EP93xx-based"
  255. select CPU_ARM920T
  256. select ARM_AMBA
  257. select ARM_VIC
  258. select GENERIC_GPIO
  259. select COMMON_CLKDEV
  260. select ARCH_REQUIRE_GPIOLIB
  261. select ARCH_HAS_HOLES_MEMORYMODEL
  262. help
  263. This enables support for the Cirrus EP93xx series of CPUs.
  264. config ARCH_FOOTBRIDGE
  265. bool "FootBridge"
  266. select CPU_SA110
  267. select FOOTBRIDGE
  268. help
  269. Support for systems based on the DC21285 companion chip
  270. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  271. config ARCH_MXC
  272. bool "Freescale MXC/iMX-based"
  273. select GENERIC_TIME
  274. select GENERIC_CLOCKEVENTS
  275. select ARCH_REQUIRE_GPIOLIB
  276. select COMMON_CLKDEV
  277. help
  278. Support for Freescale MXC/iMX-based family of processors
  279. config ARCH_STMP3XXX
  280. bool "Freescale STMP3xxx"
  281. select CPU_ARM926T
  282. select COMMON_CLKDEV
  283. select ARCH_REQUIRE_GPIOLIB
  284. select GENERIC_TIME
  285. select GENERIC_CLOCKEVENTS
  286. select GENERIC_GPIO
  287. select USB_ARCH_HAS_EHCI
  288. help
  289. Support for systems based on the Freescale 3xxx CPUs.
  290. config ARCH_NETX
  291. bool "Hilscher NetX based"
  292. select CPU_ARM926T
  293. select ARM_VIC
  294. select GENERIC_CLOCKEVENTS
  295. select GENERIC_TIME
  296. help
  297. This enables support for systems based on the Hilscher NetX Soc
  298. config ARCH_H720X
  299. bool "Hynix HMS720x-based"
  300. select CPU_ARM720T
  301. select ISA_DMA_API
  302. help
  303. This enables support for systems based on the Hynix HMS720x
  304. config ARCH_IOP13XX
  305. bool "IOP13xx-based"
  306. depends on MMU
  307. select CPU_XSC3
  308. select PLAT_IOP
  309. select PCI
  310. select ARCH_SUPPORTS_MSI
  311. select VMSPLIT_1G
  312. help
  313. Support for Intel's IOP13XX (XScale) family of processors.
  314. config ARCH_IOP32X
  315. bool "IOP32x-based"
  316. depends on MMU
  317. select CPU_XSCALE
  318. select PLAT_IOP
  319. select PCI
  320. select GENERIC_GPIO
  321. select ARCH_REQUIRE_GPIOLIB
  322. help
  323. Support for Intel's 80219 and IOP32X (XScale) family of
  324. processors.
  325. config ARCH_IOP33X
  326. bool "IOP33x-based"
  327. depends on MMU
  328. select CPU_XSCALE
  329. select PLAT_IOP
  330. select PCI
  331. select GENERIC_GPIO
  332. select ARCH_REQUIRE_GPIOLIB
  333. help
  334. Support for Intel's IOP33X (XScale) family of processors.
  335. config ARCH_IXP23XX
  336. bool "IXP23XX-based"
  337. depends on MMU
  338. select CPU_XSC3
  339. select PCI
  340. help
  341. Support for Intel's IXP23xx (XScale) family of processors.
  342. config ARCH_IXP2000
  343. bool "IXP2400/2800-based"
  344. depends on MMU
  345. select CPU_XSCALE
  346. select PCI
  347. help
  348. Support for Intel's IXP2400/2800 (XScale) family of processors.
  349. config ARCH_IXP4XX
  350. bool "IXP4xx-based"
  351. depends on MMU
  352. select CPU_XSCALE
  353. select GENERIC_GPIO
  354. select GENERIC_TIME
  355. select GENERIC_CLOCKEVENTS
  356. select DMABOUNCE if PCI
  357. help
  358. Support for Intel's IXP4XX (XScale) family of processors.
  359. config ARCH_L7200
  360. bool "LinkUp-L7200"
  361. select CPU_ARM720T
  362. select FIQ
  363. help
  364. Say Y here if you intend to run this kernel on a LinkUp Systems
  365. L7200 Software Development Board which uses an ARM720T processor.
  366. Information on this board can be obtained at:
  367. <http://www.linkupsys.com/>
  368. If you have any questions or comments about the Linux kernel port
  369. to this board, send e-mail to <sjhill@cotw.com>.
  370. config ARCH_DOVE
  371. bool "Marvell Dove"
  372. select PCI
  373. select GENERIC_GPIO
  374. select ARCH_REQUIRE_GPIOLIB
  375. select GENERIC_TIME
  376. select GENERIC_CLOCKEVENTS
  377. select PLAT_ORION
  378. help
  379. Support for the Marvell Dove SoC 88AP510
  380. config ARCH_KIRKWOOD
  381. bool "Marvell Kirkwood"
  382. select CPU_FEROCEON
  383. select PCI
  384. select GENERIC_GPIO
  385. select ARCH_REQUIRE_GPIOLIB
  386. select GENERIC_TIME
  387. select GENERIC_CLOCKEVENTS
  388. select PLAT_ORION
  389. help
  390. Support for the following Marvell Kirkwood series SoCs:
  391. 88F6180, 88F6192 and 88F6281.
  392. config ARCH_LOKI
  393. bool "Marvell Loki (88RC8480)"
  394. select CPU_FEROCEON
  395. select GENERIC_TIME
  396. select GENERIC_CLOCKEVENTS
  397. select PLAT_ORION
  398. help
  399. Support for the Marvell Loki (88RC8480) SoC.
  400. config ARCH_MV78XX0
  401. bool "Marvell MV78xx0"
  402. select CPU_FEROCEON
  403. select PCI
  404. select GENERIC_GPIO
  405. select ARCH_REQUIRE_GPIOLIB
  406. select GENERIC_TIME
  407. select GENERIC_CLOCKEVENTS
  408. select PLAT_ORION
  409. help
  410. Support for the following Marvell MV78xx0 series SoCs:
  411. MV781x0, MV782x0.
  412. config ARCH_ORION5X
  413. bool "Marvell Orion"
  414. depends on MMU
  415. select CPU_FEROCEON
  416. select PCI
  417. select GENERIC_GPIO
  418. select ARCH_REQUIRE_GPIOLIB
  419. select GENERIC_TIME
  420. select GENERIC_CLOCKEVENTS
  421. select PLAT_ORION
  422. help
  423. Support for the following Marvell Orion 5x series SoCs:
  424. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  425. Orion-2 (5281), Orion-1-90 (6183).
  426. config ARCH_MMP
  427. bool "Marvell PXA168/910/MMP2"
  428. depends on MMU
  429. select GENERIC_GPIO
  430. select ARCH_REQUIRE_GPIOLIB
  431. select COMMON_CLKDEV
  432. select GENERIC_TIME
  433. select GENERIC_CLOCKEVENTS
  434. select TICK_ONESHOT
  435. select PLAT_PXA
  436. help
  437. Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
  438. config ARCH_KS8695
  439. bool "Micrel/Kendin KS8695"
  440. select CPU_ARM922T
  441. select GENERIC_GPIO
  442. select ARCH_REQUIRE_GPIOLIB
  443. help
  444. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  445. System-on-Chip devices.
  446. config ARCH_NS9XXX
  447. bool "NetSilicon NS9xxx"
  448. select CPU_ARM926T
  449. select GENERIC_GPIO
  450. select GENERIC_TIME
  451. select GENERIC_CLOCKEVENTS
  452. select HAVE_CLK
  453. help
  454. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  455. System.
  456. <http://www.digi.com/products/microprocessors/index.jsp>
  457. config ARCH_W90X900
  458. bool "Nuvoton W90X900 CPU"
  459. select CPU_ARM926T
  460. select ARCH_REQUIRE_GPIOLIB
  461. select GENERIC_GPIO
  462. select COMMON_CLKDEV
  463. select GENERIC_TIME
  464. select GENERIC_CLOCKEVENTS
  465. help
  466. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  467. At present, the w90x900 has been renamed nuc900, regarding
  468. the ARM series product line, you can login the following
  469. link address to know more.
  470. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  471. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  472. config ARCH_NUC93X
  473. bool "Nuvoton NUC93X CPU"
  474. select CPU_ARM926T
  475. select COMMON_CLKDEV
  476. help
  477. Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
  478. low-power and high performance MPEG-4/JPEG multimedia controller chip.
  479. config ARCH_PNX4008
  480. bool "Philips Nexperia PNX4008 Mobile"
  481. select CPU_ARM926T
  482. select COMMON_CLKDEV
  483. help
  484. This enables support for Philips PNX4008 mobile platform.
  485. config ARCH_PXA
  486. bool "PXA2xx/PXA3xx-based"
  487. depends on MMU
  488. select ARCH_MTD_XIP
  489. select ARCH_HAS_CPUFREQ
  490. select GENERIC_GPIO
  491. select COMMON_CLKDEV
  492. select ARCH_REQUIRE_GPIOLIB
  493. select GENERIC_TIME
  494. select GENERIC_CLOCKEVENTS
  495. select TICK_ONESHOT
  496. select PLAT_PXA
  497. help
  498. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  499. config ARCH_MSM
  500. bool "Qualcomm MSM"
  501. select CPU_V6
  502. select GENERIC_TIME
  503. select GENERIC_CLOCKEVENTS
  504. help
  505. Support for Qualcomm MSM7K based systems. This runs on the ARM11
  506. apps processor of the MSM7K and depends on a shared memory
  507. interface to the ARM9 modem processor which runs the baseband stack
  508. and controls some vital subsystems (clock and power control, etc).
  509. config ARCH_SHMOBILE
  510. bool "Renesas SH-Mobile"
  511. help
  512. Support for Renesas's SH-Mobile ARM platforms
  513. config ARCH_RPC
  514. bool "RiscPC"
  515. select ARCH_ACORN
  516. select FIQ
  517. select TIMER_ACORN
  518. select ARCH_MAY_HAVE_PC_FDC
  519. select HAVE_PATA_PLATFORM
  520. select ISA_DMA_API
  521. select NO_IOPORT
  522. select ARCH_SPARSEMEM_ENABLE
  523. help
  524. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  525. CD-ROM interface, serial and parallel port, and the floppy drive.
  526. config ARCH_SA1100
  527. bool "SA1100-based"
  528. select CPU_SA1100
  529. select ISA
  530. select ARCH_SPARSEMEM_ENABLE
  531. select ARCH_MTD_XIP
  532. select ARCH_HAS_CPUFREQ
  533. select CPU_FREQ
  534. select GENERIC_GPIO
  535. select GENERIC_TIME
  536. select GENERIC_CLOCKEVENTS
  537. select HAVE_CLK
  538. select TICK_ONESHOT
  539. select ARCH_REQUIRE_GPIOLIB
  540. help
  541. Support for StrongARM 11x0 based boards.
  542. config ARCH_S3C2410
  543. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  544. select GENERIC_GPIO
  545. select ARCH_HAS_CPUFREQ
  546. select HAVE_CLK
  547. help
  548. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  549. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  550. the Samsung SMDK2410 development board (and derivatives).
  551. config ARCH_S3C64XX
  552. bool "Samsung S3C64XX"
  553. select PLAT_SAMSUNG
  554. select CPU_V6
  555. select GENERIC_GPIO
  556. select ARM_VIC
  557. select HAVE_CLK
  558. select NO_IOPORT
  559. select ARCH_HAS_CPUFREQ
  560. select ARCH_REQUIRE_GPIOLIB
  561. select SAMSUNG_CLKSRC
  562. select SAMSUNG_IRQ_VIC_TIMER
  563. select SAMSUNG_IRQ_UART
  564. select S3C_GPIO_TRACK
  565. select S3C_GPIO_PULL_UPDOWN
  566. select S3C_GPIO_CFG_S3C24XX
  567. select S3C_GPIO_CFG_S3C64XX
  568. select S3C_DEV_NAND
  569. select USB_ARCH_HAS_OHCI
  570. select SAMSUNG_GPIOLIB_4BIT
  571. help
  572. Samsung S3C64XX series based systems
  573. config ARCH_S5P6440
  574. bool "Samsung S5P6440"
  575. select CPU_V6
  576. select GENERIC_GPIO
  577. select HAVE_CLK
  578. help
  579. Samsung S5P6440 CPU based systems
  580. config ARCH_S5P6442
  581. bool "Samsung S5P6442"
  582. select CPU_V6
  583. select GENERIC_GPIO
  584. select HAVE_CLK
  585. help
  586. Samsung S5P6442 CPU based systems
  587. config ARCH_S5PC1XX
  588. bool "Samsung S5PC1XX"
  589. select GENERIC_GPIO
  590. select HAVE_CLK
  591. select CPU_V7
  592. select ARM_L1_CACHE_SHIFT_6
  593. help
  594. Samsung S5PC1XX series based systems
  595. config ARCH_S5PV210
  596. bool "Samsung S5PV210/S5PC110"
  597. select CPU_V7
  598. select GENERIC_GPIO
  599. select HAVE_CLK
  600. select ARM_L1_CACHE_SHIFT_6
  601. help
  602. Samsung S5PV210/S5PC110 series based systems
  603. config ARCH_SHARK
  604. bool "Shark"
  605. select CPU_SA110
  606. select ISA
  607. select ISA_DMA
  608. select ZONE_DMA
  609. select PCI
  610. help
  611. Support for the StrongARM based Digital DNARD machine, also known
  612. as "Shark" (<http://www.shark-linux.de/shark.html>).
  613. config ARCH_LH7A40X
  614. bool "Sharp LH7A40X"
  615. select CPU_ARM922T
  616. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  617. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  618. help
  619. Say Y here for systems based on one of the Sharp LH7A40X
  620. System on a Chip processors. These CPUs include an ARM922T
  621. core with a wide array of integrated devices for
  622. hand-held and low-power applications.
  623. config ARCH_U300
  624. bool "ST-Ericsson U300 Series"
  625. depends on MMU
  626. select CPU_ARM926T
  627. select HAVE_TCM
  628. select ARM_AMBA
  629. select ARM_VIC
  630. select GENERIC_TIME
  631. select GENERIC_CLOCKEVENTS
  632. select COMMON_CLKDEV
  633. select GENERIC_GPIO
  634. help
  635. Support for ST-Ericsson U300 series mobile platforms.
  636. config ARCH_U8500
  637. bool "ST-Ericsson U8500 Series"
  638. select CPU_V7
  639. select ARM_AMBA
  640. select GENERIC_TIME
  641. select GENERIC_CLOCKEVENTS
  642. select COMMON_CLKDEV
  643. help
  644. Support for ST-Ericsson's Ux500 architecture
  645. config ARCH_NOMADIK
  646. bool "STMicroelectronics Nomadik"
  647. select ARM_AMBA
  648. select ARM_VIC
  649. select CPU_ARM926T
  650. select COMMON_CLKDEV
  651. select GENERIC_TIME
  652. select GENERIC_CLOCKEVENTS
  653. select GENERIC_GPIO
  654. select ARCH_REQUIRE_GPIOLIB
  655. help
  656. Support for the Nomadik platform by ST-Ericsson
  657. config ARCH_DAVINCI
  658. bool "TI DaVinci"
  659. select CPU_ARM926T
  660. select GENERIC_TIME
  661. select GENERIC_CLOCKEVENTS
  662. select GENERIC_GPIO
  663. select ARCH_REQUIRE_GPIOLIB
  664. select ZONE_DMA
  665. select HAVE_IDE
  666. select COMMON_CLKDEV
  667. select GENERIC_ALLOCATOR
  668. select ARCH_HAS_HOLES_MEMORYMODEL
  669. help
  670. Support for TI's DaVinci platform.
  671. config ARCH_OMAP
  672. bool "TI OMAP"
  673. select GENERIC_GPIO
  674. select HAVE_CLK
  675. select ARCH_REQUIRE_GPIOLIB
  676. select ARCH_HAS_CPUFREQ
  677. select GENERIC_TIME
  678. select GENERIC_CLOCKEVENTS
  679. select ARCH_HAS_HOLES_MEMORYMODEL
  680. help
  681. Support for TI's OMAP platform (OMAP1 and OMAP2).
  682. endchoice
  683. #
  684. # This is sorted alphabetically by mach-* pathname. However, plat-*
  685. # Kconfigs may be included either alphabetically (according to the
  686. # plat- suffix) or along side the corresponding mach-* source.
  687. #
  688. source "arch/arm/mach-aaec2000/Kconfig"
  689. source "arch/arm/mach-at91/Kconfig"
  690. source "arch/arm/mach-bcmring/Kconfig"
  691. source "arch/arm/mach-clps711x/Kconfig"
  692. source "arch/arm/mach-davinci/Kconfig"
  693. source "arch/arm/mach-dove/Kconfig"
  694. source "arch/arm/mach-ep93xx/Kconfig"
  695. source "arch/arm/mach-footbridge/Kconfig"
  696. source "arch/arm/mach-gemini/Kconfig"
  697. source "arch/arm/mach-h720x/Kconfig"
  698. source "arch/arm/mach-integrator/Kconfig"
  699. source "arch/arm/mach-iop32x/Kconfig"
  700. source "arch/arm/mach-iop33x/Kconfig"
  701. source "arch/arm/mach-iop13xx/Kconfig"
  702. source "arch/arm/mach-ixp4xx/Kconfig"
  703. source "arch/arm/mach-ixp2000/Kconfig"
  704. source "arch/arm/mach-ixp23xx/Kconfig"
  705. source "arch/arm/mach-kirkwood/Kconfig"
  706. source "arch/arm/mach-ks8695/Kconfig"
  707. source "arch/arm/mach-lh7a40x/Kconfig"
  708. source "arch/arm/mach-loki/Kconfig"
  709. source "arch/arm/mach-msm/Kconfig"
  710. source "arch/arm/mach-mv78xx0/Kconfig"
  711. source "arch/arm/plat-mxc/Kconfig"
  712. source "arch/arm/mach-netx/Kconfig"
  713. source "arch/arm/mach-nomadik/Kconfig"
  714. source "arch/arm/plat-nomadik/Kconfig"
  715. source "arch/arm/mach-ns9xxx/Kconfig"
  716. source "arch/arm/mach-nuc93x/Kconfig"
  717. source "arch/arm/plat-omap/Kconfig"
  718. source "arch/arm/mach-omap1/Kconfig"
  719. source "arch/arm/mach-omap2/Kconfig"
  720. source "arch/arm/mach-orion5x/Kconfig"
  721. source "arch/arm/mach-pxa/Kconfig"
  722. source "arch/arm/plat-pxa/Kconfig"
  723. source "arch/arm/mach-mmp/Kconfig"
  724. source "arch/arm/mach-realview/Kconfig"
  725. source "arch/arm/mach-sa1100/Kconfig"
  726. source "arch/arm/plat-samsung/Kconfig"
  727. source "arch/arm/plat-s3c24xx/Kconfig"
  728. source "arch/arm/plat-s5p/Kconfig"
  729. source "arch/arm/plat-s5pc1xx/Kconfig"
  730. if ARCH_S3C2410
  731. source "arch/arm/mach-s3c2400/Kconfig"
  732. source "arch/arm/mach-s3c2410/Kconfig"
  733. source "arch/arm/mach-s3c2412/Kconfig"
  734. source "arch/arm/mach-s3c2440/Kconfig"
  735. source "arch/arm/mach-s3c2443/Kconfig"
  736. endif
  737. if ARCH_S3C64XX
  738. source "arch/arm/mach-s3c64xx/Kconfig"
  739. endif
  740. source "arch/arm/mach-s5p6440/Kconfig"
  741. source "arch/arm/mach-s5p6442/Kconfig"
  742. if ARCH_S5PC1XX
  743. source "arch/arm/mach-s5pc100/Kconfig"
  744. endif
  745. source "arch/arm/mach-s5pv210/Kconfig"
  746. source "arch/arm/mach-shmobile/Kconfig"
  747. source "arch/arm/plat-stmp3xxx/Kconfig"
  748. source "arch/arm/mach-u300/Kconfig"
  749. source "arch/arm/mach-ux500/Kconfig"
  750. source "arch/arm/mach-versatile/Kconfig"
  751. source "arch/arm/mach-w90x900/Kconfig"
  752. # Definitions to make life easier
  753. config ARCH_ACORN
  754. bool
  755. config PLAT_IOP
  756. bool
  757. select GENERIC_CLOCKEVENTS
  758. select GENERIC_TIME
  759. config PLAT_ORION
  760. bool
  761. config PLAT_PXA
  762. bool
  763. source arch/arm/mm/Kconfig
  764. config IWMMXT
  765. bool "Enable iWMMXt support"
  766. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
  767. default y if PXA27x || PXA3xx || ARCH_MMP
  768. help
  769. Enable support for iWMMXt context switching at run time if
  770. running on a CPU that supports it.
  771. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  772. config XSCALE_PMU
  773. bool
  774. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  775. default y
  776. config CPU_HAS_PMU
  777. depends on CPU_V6 || CPU_V7 || XSCALE_PMU
  778. default y
  779. bool
  780. if !MMU
  781. source "arch/arm/Kconfig-nommu"
  782. endif
  783. config ARM_ERRATA_411920
  784. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  785. depends on CPU_V6 && !SMP
  786. help
  787. Invalidation of the Instruction Cache operation can
  788. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  789. It does not affect the MPCore. This option enables the ARM Ltd.
  790. recommended workaround.
  791. config ARM_ERRATA_430973
  792. bool "ARM errata: Stale prediction on replaced interworking branch"
  793. depends on CPU_V7
  794. help
  795. This option enables the workaround for the 430973 Cortex-A8
  796. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  797. interworking branch is replaced with another code sequence at the
  798. same virtual address, whether due to self-modifying code or virtual
  799. to physical address re-mapping, Cortex-A8 does not recover from the
  800. stale interworking branch prediction. This results in Cortex-A8
  801. executing the new code sequence in the incorrect ARM or Thumb state.
  802. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  803. and also flushes the branch target cache at every context switch.
  804. Note that setting specific bits in the ACTLR register may not be
  805. available in non-secure mode.
  806. config ARM_ERRATA_458693
  807. bool "ARM errata: Processor deadlock when a false hazard is created"
  808. depends on CPU_V7
  809. help
  810. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  811. erratum. For very specific sequences of memory operations, it is
  812. possible for a hazard condition intended for a cache line to instead
  813. be incorrectly associated with a different cache line. This false
  814. hazard might then cause a processor deadlock. The workaround enables
  815. the L1 caching of the NEON accesses and disables the PLD instruction
  816. in the ACTLR register. Note that setting specific bits in the ACTLR
  817. register may not be available in non-secure mode.
  818. config ARM_ERRATA_460075
  819. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  820. depends on CPU_V7
  821. help
  822. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  823. erratum. Any asynchronous access to the L2 cache may encounter a
  824. situation in which recent store transactions to the L2 cache are lost
  825. and overwritten with stale memory contents from external memory. The
  826. workaround disables the write-allocate mode for the L2 cache via the
  827. ACTLR register. Note that setting specific bits in the ACTLR register
  828. may not be available in non-secure mode.
  829. config PL310_ERRATA_588369
  830. bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
  831. depends on CACHE_L2X0 && ARCH_OMAP4
  832. help
  833. The PL310 L2 cache controller implements three types of Clean &
  834. Invalidate maintenance operations: by Physical Address
  835. (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
  836. They are architecturally defined to behave as the execution of a
  837. clean operation followed immediately by an invalidate operation,
  838. both performing to the same memory location. This functionality
  839. is not correctly implemented in PL310 as clean lines are not
  840. invalidated as a result of these operations. Note that this errata
  841. uses Texas Instrument's secure monitor api.
  842. endmenu
  843. source "arch/arm/common/Kconfig"
  844. config FORCE_MAX_ZONEORDER
  845. int
  846. depends on SA1111
  847. default "9"
  848. menu "Bus support"
  849. config ARM_AMBA
  850. bool
  851. config ISA
  852. bool
  853. help
  854. Find out whether you have ISA slots on your motherboard. ISA is the
  855. name of a bus system, i.e. the way the CPU talks to the other stuff
  856. inside your box. Other bus systems are PCI, EISA, MicroChannel
  857. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  858. newer boards don't support it. If you have ISA, say Y, otherwise N.
  859. # Select ISA DMA controller support
  860. config ISA_DMA
  861. bool
  862. select ISA_DMA_API
  863. # Select ISA DMA interface
  864. config ISA_DMA_API
  865. bool
  866. config PCI
  867. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  868. help
  869. Find out whether you have a PCI motherboard. PCI is the name of a
  870. bus system, i.e. the way the CPU talks to the other stuff inside
  871. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  872. VESA. If you have PCI, say Y, otherwise N.
  873. config PCI_SYSCALL
  874. def_bool PCI
  875. # Select the host bridge type
  876. config PCI_HOST_VIA82C505
  877. bool
  878. depends on PCI && ARCH_SHARK
  879. default y
  880. config PCI_HOST_ITE8152
  881. bool
  882. depends on PCI && MACH_ARMCORE
  883. default y
  884. select DMABOUNCE
  885. source "drivers/pci/Kconfig"
  886. source "drivers/pcmcia/Kconfig"
  887. endmenu
  888. menu "Kernel Features"
  889. source "kernel/time/Kconfig"
  890. config SMP
  891. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  892. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
  893. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
  894. depends on GENERIC_CLOCKEVENTS
  895. select USE_GENERIC_SMP_HELPERS
  896. select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
  897. help
  898. This enables support for systems with more than one CPU. If you have
  899. a system with only one CPU, like most personal computers, say N. If
  900. you have a system with more than one CPU, say Y.
  901. If you say N here, the kernel will run on single and multiprocessor
  902. machines, but will use only one CPU of a multiprocessor machine. If
  903. you say Y here, the kernel will run on many, but not all, single
  904. processor machines. On a single processor machine, the kernel will
  905. run faster if you say N here.
  906. See also <file:Documentation/i386/IO-APIC.txt>,
  907. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  908. <http://www.linuxdoc.org/docs.html#howto>.
  909. If you don't know what to do here, say N.
  910. config HAVE_ARM_SCU
  911. bool
  912. depends on SMP
  913. help
  914. This option enables support for the ARM system coherency unit
  915. config HAVE_ARM_TWD
  916. bool
  917. depends on SMP
  918. help
  919. This options enables support for the ARM timer and watchdog unit
  920. choice
  921. prompt "Memory split"
  922. default VMSPLIT_3G
  923. help
  924. Select the desired split between kernel and user memory.
  925. If you are not absolutely sure what you are doing, leave this
  926. option alone!
  927. config VMSPLIT_3G
  928. bool "3G/1G user/kernel split"
  929. config VMSPLIT_2G
  930. bool "2G/2G user/kernel split"
  931. config VMSPLIT_1G
  932. bool "1G/3G user/kernel split"
  933. endchoice
  934. config PAGE_OFFSET
  935. hex
  936. default 0x40000000 if VMSPLIT_1G
  937. default 0x80000000 if VMSPLIT_2G
  938. default 0xC0000000
  939. config NR_CPUS
  940. int "Maximum number of CPUs (2-32)"
  941. range 2 32
  942. depends on SMP
  943. default "4"
  944. config HOTPLUG_CPU
  945. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  946. depends on SMP && HOTPLUG && EXPERIMENTAL
  947. help
  948. Say Y here to experiment with turning CPUs off and on. CPUs
  949. can be controlled through /sys/devices/system/cpu.
  950. config LOCAL_TIMERS
  951. bool "Use local timer interrupts"
  952. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
  953. REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
  954. default y
  955. select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
  956. help
  957. Enable support for local timers on SMP platforms, rather then the
  958. legacy IPI broadcast method. Local timers allows the system
  959. accounting to be spread across the timer interval, preventing a
  960. "thundering herd" at every timer tick.
  961. source kernel/Kconfig.preempt
  962. config HZ
  963. int
  964. default 128 if ARCH_L7200
  965. default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
  966. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  967. default AT91_TIMER_HZ if ARCH_AT91
  968. default 100
  969. config THUMB2_KERNEL
  970. bool "Compile the kernel in Thumb-2 mode"
  971. depends on CPU_V7 && EXPERIMENTAL
  972. select AEABI
  973. select ARM_ASM_UNIFIED
  974. help
  975. By enabling this option, the kernel will be compiled in
  976. Thumb-2 mode. A compiler/assembler that understand the unified
  977. ARM-Thumb syntax is needed.
  978. If unsure, say N.
  979. config ARM_ASM_UNIFIED
  980. bool
  981. config AEABI
  982. bool "Use the ARM EABI to compile the kernel"
  983. help
  984. This option allows for the kernel to be compiled using the latest
  985. ARM ABI (aka EABI). This is only useful if you are using a user
  986. space environment that is also compiled with EABI.
  987. Since there are major incompatibilities between the legacy ABI and
  988. EABI, especially with regard to structure member alignment, this
  989. option also changes the kernel syscall calling convention to
  990. disambiguate both ABIs and allow for backward compatibility support
  991. (selected with CONFIG_OABI_COMPAT).
  992. To use this you need GCC version 4.0.0 or later.
  993. config OABI_COMPAT
  994. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  995. depends on AEABI && EXPERIMENTAL
  996. default y
  997. help
  998. This option preserves the old syscall interface along with the
  999. new (ARM EABI) one. It also provides a compatibility layer to
  1000. intercept syscalls that have structure arguments which layout
  1001. in memory differs between the legacy ABI and the new ARM EABI
  1002. (only for non "thumb" binaries). This option adds a tiny
  1003. overhead to all syscalls and produces a slightly larger kernel.
  1004. If you know you'll be using only pure EABI user space then you
  1005. can say N here. If this option is not selected and you attempt
  1006. to execute a legacy ABI binary then the result will be
  1007. UNPREDICTABLE (in fact it can be predicted that it won't work
  1008. at all). If in doubt say Y.
  1009. config ARCH_HAS_HOLES_MEMORYMODEL
  1010. bool
  1011. # Discontigmem is deprecated
  1012. config ARCH_DISCONTIGMEM_ENABLE
  1013. bool
  1014. config ARCH_SPARSEMEM_ENABLE
  1015. bool
  1016. config ARCH_SPARSEMEM_DEFAULT
  1017. def_bool ARCH_SPARSEMEM_ENABLE
  1018. config ARCH_SELECT_MEMORY_MODEL
  1019. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  1020. config NODES_SHIFT
  1021. int
  1022. default "4" if ARCH_LH7A40X
  1023. default "2"
  1024. depends on NEED_MULTIPLE_NODES
  1025. config HIGHMEM
  1026. bool "High Memory Support (EXPERIMENTAL)"
  1027. depends on MMU && EXPERIMENTAL
  1028. help
  1029. The address space of ARM processors is only 4 Gigabytes large
  1030. and it has to accommodate user address space, kernel address
  1031. space as well as some memory mapped IO. That means that, if you
  1032. have a large amount of physical memory and/or IO, not all of the
  1033. memory can be "permanently mapped" by the kernel. The physical
  1034. memory that is not permanently mapped is called "high memory".
  1035. Depending on the selected kernel/user memory split, minimum
  1036. vmalloc space and actual amount of RAM, you may not need this
  1037. option which should result in a slightly faster kernel.
  1038. If unsure, say n.
  1039. config HIGHPTE
  1040. bool "Allocate 2nd-level pagetables from highmem"
  1041. depends on HIGHMEM
  1042. depends on !OUTER_CACHE
  1043. config HW_PERF_EVENTS
  1044. bool "Enable hardware performance counter support for perf events"
  1045. depends on PERF_EVENTS && CPU_HAS_PMU && (CPU_V6 || CPU_V7)
  1046. default y
  1047. help
  1048. Enable hardware performance counter support for perf events. If
  1049. disabled, perf events will use software events only.
  1050. source "mm/Kconfig"
  1051. config LEDS
  1052. bool "Timer and CPU usage LEDs"
  1053. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  1054. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  1055. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  1056. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  1057. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  1058. ARCH_AT91 || ARCH_DAVINCI || \
  1059. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  1060. help
  1061. If you say Y here, the LEDs on your machine will be used
  1062. to provide useful information about your current system status.
  1063. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  1064. be able to select which LEDs are active using the options below. If
  1065. you are compiling a kernel for the EBSA-110 or the LART however, the
  1066. red LED will simply flash regularly to indicate that the system is
  1067. still functional. It is safe to say Y here if you have a CATS
  1068. system, but the driver will do nothing.
  1069. config LEDS_TIMER
  1070. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  1071. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1072. || MACH_OMAP_PERSEUS2
  1073. depends on LEDS
  1074. depends on !GENERIC_CLOCKEVENTS
  1075. default y if ARCH_EBSA110
  1076. help
  1077. If you say Y here, one of the system LEDs (the green one on the
  1078. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1079. will flash regularly to indicate that the system is still
  1080. operational. This is mainly useful to kernel hackers who are
  1081. debugging unstable kernels.
  1082. The LART uses the same LED for both Timer LED and CPU usage LED
  1083. functions. You may choose to use both, but the Timer LED function
  1084. will overrule the CPU usage LED.
  1085. config LEDS_CPU
  1086. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1087. !ARCH_OMAP) \
  1088. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1089. || MACH_OMAP_PERSEUS2
  1090. depends on LEDS
  1091. help
  1092. If you say Y here, the red LED will be used to give a good real
  1093. time indication of CPU usage, by lighting whenever the idle task
  1094. is not currently executing.
  1095. The LART uses the same LED for both Timer LED and CPU usage LED
  1096. functions. You may choose to use both, but the Timer LED function
  1097. will overrule the CPU usage LED.
  1098. config ALIGNMENT_TRAP
  1099. bool
  1100. depends on CPU_CP15_MMU
  1101. default y if !ARCH_EBSA110
  1102. select HAVE_PROC_CPU if PROC_FS
  1103. help
  1104. ARM processors cannot fetch/store information which is not
  1105. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1106. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1107. fetch/store instructions will be emulated in software if you say
  1108. here, which has a severe performance impact. This is necessary for
  1109. correct operation of some network protocols. With an IP-only
  1110. configuration it is safe to say N, otherwise say Y.
  1111. config UACCESS_WITH_MEMCPY
  1112. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1113. depends on MMU && EXPERIMENTAL
  1114. default y if CPU_FEROCEON
  1115. help
  1116. Implement faster copy_to_user and clear_user methods for CPU
  1117. cores where a 8-word STM instruction give significantly higher
  1118. memory write throughput than a sequence of individual 32bit stores.
  1119. A possible side effect is a slight increase in scheduling latency
  1120. between threads sharing the same address space if they invoke
  1121. such copy operations with large buffers.
  1122. However, if the CPU data cache is using a write-allocate mode,
  1123. this option is unlikely to provide any performance gain.
  1124. endmenu
  1125. menu "Boot options"
  1126. # Compressed boot loader in ROM. Yes, we really want to ask about
  1127. # TEXT and BSS so we preserve their values in the config files.
  1128. config ZBOOT_ROM_TEXT
  1129. hex "Compressed ROM boot loader base address"
  1130. default "0"
  1131. help
  1132. The physical address at which the ROM-able zImage is to be
  1133. placed in the target. Platforms which normally make use of
  1134. ROM-able zImage formats normally set this to a suitable
  1135. value in their defconfig file.
  1136. If ZBOOT_ROM is not enabled, this has no effect.
  1137. config ZBOOT_ROM_BSS
  1138. hex "Compressed ROM boot loader BSS address"
  1139. default "0"
  1140. help
  1141. The base address of an area of read/write memory in the target
  1142. for the ROM-able zImage which must be available while the
  1143. decompressor is running. It must be large enough to hold the
  1144. entire decompressed kernel plus an additional 128 KiB.
  1145. Platforms which normally make use of ROM-able zImage formats
  1146. normally set this to a suitable value in their defconfig file.
  1147. If ZBOOT_ROM is not enabled, this has no effect.
  1148. config ZBOOT_ROM
  1149. bool "Compressed boot loader in ROM/flash"
  1150. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1151. help
  1152. Say Y here if you intend to execute your compressed kernel image
  1153. (zImage) directly from ROM or flash. If unsure, say N.
  1154. config CMDLINE
  1155. string "Default kernel command string"
  1156. default ""
  1157. help
  1158. On some architectures (EBSA110 and CATS), there is currently no way
  1159. for the boot loader to pass arguments to the kernel. For these
  1160. architectures, you should supply some command-line options at build
  1161. time by entering them here. As a minimum, you should specify the
  1162. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1163. config XIP_KERNEL
  1164. bool "Kernel Execute-In-Place from ROM"
  1165. depends on !ZBOOT_ROM
  1166. help
  1167. Execute-In-Place allows the kernel to run from non-volatile storage
  1168. directly addressable by the CPU, such as NOR flash. This saves RAM
  1169. space since the text section of the kernel is not loaded from flash
  1170. to RAM. Read-write sections, such as the data section and stack,
  1171. are still copied to RAM. The XIP kernel is not compressed since
  1172. it has to run directly from flash, so it will take more space to
  1173. store it. The flash address used to link the kernel object files,
  1174. and for storing it, is configuration dependent. Therefore, if you
  1175. say Y here, you must know the proper physical address where to
  1176. store the kernel image depending on your own flash memory usage.
  1177. Also note that the make target becomes "make xipImage" rather than
  1178. "make zImage" or "make Image". The final kernel binary to put in
  1179. ROM memory will be arch/arm/boot/xipImage.
  1180. If unsure, say N.
  1181. config XIP_PHYS_ADDR
  1182. hex "XIP Kernel Physical Location"
  1183. depends on XIP_KERNEL
  1184. default "0x00080000"
  1185. help
  1186. This is the physical address in your flash memory the kernel will
  1187. be linked for and stored to. This address is dependent on your
  1188. own flash usage.
  1189. config KEXEC
  1190. bool "Kexec system call (EXPERIMENTAL)"
  1191. depends on EXPERIMENTAL
  1192. help
  1193. kexec is a system call that implements the ability to shutdown your
  1194. current kernel, and to start another kernel. It is like a reboot
  1195. but it is independent of the system firmware. And like a reboot
  1196. you can start any kernel with it, not just Linux.
  1197. It is an ongoing process to be certain the hardware in a machine
  1198. is properly shutdown, so do not be surprised if this code does not
  1199. initially work for you. It may help to enable device hotplugging
  1200. support.
  1201. config ATAGS_PROC
  1202. bool "Export atags in procfs"
  1203. depends on KEXEC
  1204. default y
  1205. help
  1206. Should the atags used to boot the kernel be exported in an "atags"
  1207. file in procfs. Useful with kexec.
  1208. endmenu
  1209. menu "CPU Power Management"
  1210. if ARCH_HAS_CPUFREQ
  1211. source "drivers/cpufreq/Kconfig"
  1212. config CPU_FREQ_SA1100
  1213. bool
  1214. config CPU_FREQ_SA1110
  1215. bool
  1216. config CPU_FREQ_INTEGRATOR
  1217. tristate "CPUfreq driver for ARM Integrator CPUs"
  1218. depends on ARCH_INTEGRATOR && CPU_FREQ
  1219. default y
  1220. help
  1221. This enables the CPUfreq driver for ARM Integrator CPUs.
  1222. For details, take a look at <file:Documentation/cpu-freq>.
  1223. If in doubt, say Y.
  1224. config CPU_FREQ_PXA
  1225. bool
  1226. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1227. default y
  1228. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1229. config CPU_FREQ_S3C64XX
  1230. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1231. depends on CPU_FREQ && CPU_S3C6410
  1232. config CPU_FREQ_S3C
  1233. bool
  1234. help
  1235. Internal configuration node for common cpufreq on Samsung SoC
  1236. config CPU_FREQ_S3C24XX
  1237. bool "CPUfreq driver for Samsung S3C24XX series CPUs"
  1238. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1239. select CPU_FREQ_S3C
  1240. help
  1241. This enables the CPUfreq driver for the Samsung S3C24XX family
  1242. of CPUs.
  1243. For details, take a look at <file:Documentation/cpu-freq>.
  1244. If in doubt, say N.
  1245. config CPU_FREQ_S3C24XX_PLL
  1246. bool "Support CPUfreq changing of PLL frequency"
  1247. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1248. help
  1249. Compile in support for changing the PLL frequency from the
  1250. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1251. after a frequency change, so by default it is not enabled.
  1252. This also means that the PLL tables for the selected CPU(s) will
  1253. be built which may increase the size of the kernel image.
  1254. config CPU_FREQ_S3C24XX_DEBUG
  1255. bool "Debug CPUfreq Samsung driver core"
  1256. depends on CPU_FREQ_S3C24XX
  1257. help
  1258. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1259. config CPU_FREQ_S3C24XX_IODEBUG
  1260. bool "Debug CPUfreq Samsung driver IO timing"
  1261. depends on CPU_FREQ_S3C24XX
  1262. help
  1263. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1264. config CPU_FREQ_S3C24XX_DEBUGFS
  1265. bool "Export debugfs for CPUFreq"
  1266. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1267. help
  1268. Export status information via debugfs.
  1269. endif
  1270. source "drivers/cpuidle/Kconfig"
  1271. endmenu
  1272. menu "Floating point emulation"
  1273. comment "At least one emulation must be selected"
  1274. config FPE_NWFPE
  1275. bool "NWFPE math emulation"
  1276. depends on !AEABI || OABI_COMPAT
  1277. ---help---
  1278. Say Y to include the NWFPE floating point emulator in the kernel.
  1279. This is necessary to run most binaries. Linux does not currently
  1280. support floating point hardware so you need to say Y here even if
  1281. your machine has an FPA or floating point co-processor podule.
  1282. You may say N here if you are going to load the Acorn FPEmulator
  1283. early in the bootup.
  1284. config FPE_NWFPE_XP
  1285. bool "Support extended precision"
  1286. depends on FPE_NWFPE
  1287. help
  1288. Say Y to include 80-bit support in the kernel floating-point
  1289. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1290. Note that gcc does not generate 80-bit operations by default,
  1291. so in most cases this option only enlarges the size of the
  1292. floating point emulator without any good reason.
  1293. You almost surely want to say N here.
  1294. config FPE_FASTFPE
  1295. bool "FastFPE math emulation (EXPERIMENTAL)"
  1296. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1297. ---help---
  1298. Say Y here to include the FAST floating point emulator in the kernel.
  1299. This is an experimental much faster emulator which now also has full
  1300. precision for the mantissa. It does not support any exceptions.
  1301. It is very simple, and approximately 3-6 times faster than NWFPE.
  1302. It should be sufficient for most programs. It may be not suitable
  1303. for scientific calculations, but you have to check this for yourself.
  1304. If you do not feel you need a faster FP emulation you should better
  1305. choose NWFPE.
  1306. config VFP
  1307. bool "VFP-format floating point maths"
  1308. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1309. help
  1310. Say Y to include VFP support code in the kernel. This is needed
  1311. if your hardware includes a VFP unit.
  1312. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1313. release notes and additional status information.
  1314. Say N if your target does not have VFP hardware.
  1315. config VFPv3
  1316. bool
  1317. depends on VFP
  1318. default y if CPU_V7
  1319. config NEON
  1320. bool "Advanced SIMD (NEON) Extension support"
  1321. depends on VFPv3 && CPU_V7
  1322. help
  1323. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1324. Extension.
  1325. endmenu
  1326. menu "Userspace binary formats"
  1327. source "fs/Kconfig.binfmt"
  1328. config ARTHUR
  1329. tristate "RISC OS personality"
  1330. depends on !AEABI
  1331. help
  1332. Say Y here to include the kernel code necessary if you want to run
  1333. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1334. experimental; if this sounds frightening, say N and sleep in peace.
  1335. You can also say M here to compile this support as a module (which
  1336. will be called arthur).
  1337. endmenu
  1338. menu "Power management options"
  1339. source "kernel/power/Kconfig"
  1340. config ARCH_SUSPEND_POSSIBLE
  1341. def_bool y
  1342. endmenu
  1343. source "net/Kconfig"
  1344. source "drivers/Kconfig"
  1345. source "fs/Kconfig"
  1346. source "arch/arm/Kconfig.debug"
  1347. source "security/Kconfig"
  1348. source "crypto/Kconfig"
  1349. source "lib/Kconfig"