Kconfig 51 KB

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  1. config ARM
  2. bool
  3. default y
  4. select HAVE_AOUT
  5. select HAVE_IDE
  6. select HAVE_MEMBLOCK
  7. select RTC_LIB
  8. select SYS_SUPPORTS_APM_EMULATION
  9. select GENERIC_ATOMIC64 if (!CPU_32v6K || !AEABI)
  10. select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
  11. select HAVE_ARCH_KGDB
  12. select HAVE_KPROBES if (!XIP_KERNEL && !THUMB2_KERNEL)
  13. select HAVE_KRETPROBES if (HAVE_KPROBES)
  14. select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  15. select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
  16. select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
  17. select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
  18. select HAVE_GENERIC_DMA_COHERENT
  19. select HAVE_KERNEL_GZIP
  20. select HAVE_KERNEL_LZO
  21. select HAVE_KERNEL_LZMA
  22. select HAVE_IRQ_WORK
  23. select HAVE_PERF_EVENTS
  24. select PERF_USE_VMALLOC
  25. select HAVE_REGS_AND_STACK_ACCESS_API
  26. select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V7))
  27. help
  28. The ARM series is a line of low-power-consumption RISC chip designs
  29. licensed by ARM Ltd and targeted at embedded applications and
  30. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  31. manufactured, but legacy ARM-based PC hardware remains popular in
  32. Europe. There is an ARM Linux project with a web page at
  33. <http://www.arm.linux.org.uk/>.
  34. config HAVE_PWM
  35. bool
  36. config SYS_SUPPORTS_APM_EMULATION
  37. bool
  38. config GENERIC_GPIO
  39. bool
  40. config ARCH_USES_GETTIMEOFFSET
  41. bool
  42. default n
  43. config GENERIC_CLOCKEVENTS
  44. bool
  45. config GENERIC_CLOCKEVENTS_BROADCAST
  46. bool
  47. depends on GENERIC_CLOCKEVENTS
  48. default y if SMP
  49. config HAVE_TCM
  50. bool
  51. select GENERIC_ALLOCATOR
  52. config HAVE_PROC_CPU
  53. bool
  54. config NO_IOPORT
  55. bool
  56. config EISA
  57. bool
  58. ---help---
  59. The Extended Industry Standard Architecture (EISA) bus was
  60. developed as an open alternative to the IBM MicroChannel bus.
  61. The EISA bus provided some of the features of the IBM MicroChannel
  62. bus while maintaining backward compatibility with cards made for
  63. the older ISA bus. The EISA bus saw limited use between 1988 and
  64. 1995 when it was made obsolete by the PCI bus.
  65. Say Y here if you are building a kernel for an EISA-based machine.
  66. Otherwise, say N.
  67. config SBUS
  68. bool
  69. config MCA
  70. bool
  71. help
  72. MicroChannel Architecture is found in some IBM PS/2 machines and
  73. laptops. It is a bus system similar to PCI or ISA. See
  74. <file:Documentation/mca.txt> (and especially the web page given
  75. there) before attempting to build an MCA bus kernel.
  76. config GENERIC_HARDIRQS
  77. bool
  78. default y
  79. config STACKTRACE_SUPPORT
  80. bool
  81. default y
  82. config HAVE_LATENCYTOP_SUPPORT
  83. bool
  84. depends on !SMP
  85. default y
  86. config LOCKDEP_SUPPORT
  87. bool
  88. default y
  89. config TRACE_IRQFLAGS_SUPPORT
  90. bool
  91. default y
  92. config HARDIRQS_SW_RESEND
  93. bool
  94. default y
  95. config GENERIC_IRQ_PROBE
  96. bool
  97. default y
  98. config GENERIC_LOCKBREAK
  99. bool
  100. default y
  101. depends on SMP && PREEMPT
  102. config RWSEM_GENERIC_SPINLOCK
  103. bool
  104. default y
  105. config RWSEM_XCHGADD_ALGORITHM
  106. bool
  107. config ARCH_HAS_ILOG2_U32
  108. bool
  109. config ARCH_HAS_ILOG2_U64
  110. bool
  111. config ARCH_HAS_CPUFREQ
  112. bool
  113. help
  114. Internal node to signify that the ARCH has CPUFREQ support
  115. and that the relevant menu configurations are displayed for
  116. it.
  117. config ARCH_HAS_CPU_IDLE_WAIT
  118. def_bool y
  119. config GENERIC_HWEIGHT
  120. bool
  121. default y
  122. config GENERIC_CALIBRATE_DELAY
  123. bool
  124. default y
  125. config ARCH_MAY_HAVE_PC_FDC
  126. bool
  127. config ZONE_DMA
  128. bool
  129. config NEED_DMA_MAP_STATE
  130. def_bool y
  131. config GENERIC_ISA_DMA
  132. bool
  133. config FIQ
  134. bool
  135. config ARCH_MTD_XIP
  136. bool
  137. config GENERIC_HARDIRQS_NO__DO_IRQ
  138. def_bool y
  139. config ARM_L1_CACHE_SHIFT_6
  140. bool
  141. help
  142. Setting ARM L1 cache line size to 64 Bytes.
  143. config VECTORS_BASE
  144. hex
  145. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  146. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  147. default 0x00000000
  148. help
  149. The base address of exception vectors.
  150. source "init/Kconfig"
  151. source "kernel/Kconfig.freezer"
  152. menu "System Type"
  153. config MMU
  154. bool "MMU-based Paged Memory Management Support"
  155. default y
  156. help
  157. Select if you want MMU-based virtualised addressing space
  158. support by paged memory management. If unsure, say 'Y'.
  159. #
  160. # The "ARM system type" choice list is ordered alphabetically by option
  161. # text. Please add new entries in the option alphabetic order.
  162. #
  163. choice
  164. prompt "ARM system type"
  165. default ARCH_VERSATILE
  166. config ARCH_AAEC2000
  167. bool "Agilent AAEC-2000 based"
  168. select CPU_ARM920T
  169. select ARM_AMBA
  170. select HAVE_CLK
  171. select ARCH_USES_GETTIMEOFFSET
  172. help
  173. This enables support for systems based on the Agilent AAEC-2000
  174. config ARCH_INTEGRATOR
  175. bool "ARM Ltd. Integrator family"
  176. select ARM_AMBA
  177. select ARCH_HAS_CPUFREQ
  178. select COMMON_CLKDEV
  179. select ICST
  180. select GENERIC_CLOCKEVENTS
  181. select PLAT_VERSATILE
  182. help
  183. Support for ARM's Integrator platform.
  184. config ARCH_REALVIEW
  185. bool "ARM Ltd. RealView family"
  186. select ARM_AMBA
  187. select COMMON_CLKDEV
  188. select ICST
  189. select GENERIC_CLOCKEVENTS
  190. select ARCH_WANT_OPTIONAL_GPIOLIB
  191. select PLAT_VERSATILE
  192. select ARM_TIMER_SP804
  193. select GPIO_PL061 if GPIOLIB
  194. help
  195. This enables support for ARM Ltd RealView boards.
  196. config ARCH_VERSATILE
  197. bool "ARM Ltd. Versatile family"
  198. select ARM_AMBA
  199. select ARM_VIC
  200. select COMMON_CLKDEV
  201. select ICST
  202. select GENERIC_CLOCKEVENTS
  203. select ARCH_WANT_OPTIONAL_GPIOLIB
  204. select PLAT_VERSATILE
  205. select ARM_TIMER_SP804
  206. help
  207. This enables support for ARM Ltd Versatile board.
  208. config ARCH_VEXPRESS
  209. bool "ARM Ltd. Versatile Express family"
  210. select ARCH_WANT_OPTIONAL_GPIOLIB
  211. select ARM_AMBA
  212. select ARM_TIMER_SP804
  213. select COMMON_CLKDEV
  214. select GENERIC_CLOCKEVENTS
  215. select HAVE_CLK
  216. select ICST
  217. select PLAT_VERSATILE
  218. help
  219. This enables support for the ARM Ltd Versatile Express boards.
  220. config ARCH_AT91
  221. bool "Atmel AT91"
  222. select ARCH_REQUIRE_GPIOLIB
  223. select HAVE_CLK
  224. help
  225. This enables support for systems based on the Atmel AT91RM9200,
  226. AT91SAM9 and AT91CAP9 processors.
  227. config ARCH_BCMRING
  228. bool "Broadcom BCMRING"
  229. depends on MMU
  230. select CPU_V6
  231. select ARM_AMBA
  232. select COMMON_CLKDEV
  233. select GENERIC_CLOCKEVENTS
  234. select ARCH_WANT_OPTIONAL_GPIOLIB
  235. help
  236. Support for Broadcom's BCMRing platform.
  237. config ARCH_CLPS711X
  238. bool "Cirrus Logic CLPS711x/EP721x-based"
  239. select CPU_ARM720T
  240. select ARCH_USES_GETTIMEOFFSET
  241. help
  242. Support for Cirrus Logic 711x/721x based boards.
  243. config ARCH_CNS3XXX
  244. bool "Cavium Networks CNS3XXX family"
  245. select CPU_V6
  246. select GENERIC_CLOCKEVENTS
  247. select ARM_GIC
  248. select PCI_DOMAINS if PCI
  249. help
  250. Support for Cavium Networks CNS3XXX platform.
  251. config ARCH_GEMINI
  252. bool "Cortina Systems Gemini"
  253. select CPU_FA526
  254. select ARCH_REQUIRE_GPIOLIB
  255. select ARCH_USES_GETTIMEOFFSET
  256. help
  257. Support for the Cortina Systems Gemini family SoCs
  258. config ARCH_EBSA110
  259. bool "EBSA-110"
  260. select CPU_SA110
  261. select ISA
  262. select NO_IOPORT
  263. select ARCH_USES_GETTIMEOFFSET
  264. help
  265. This is an evaluation board for the StrongARM processor available
  266. from Digital. It has limited hardware on-board, including an
  267. Ethernet interface, two PCMCIA sockets, two serial ports and a
  268. parallel port.
  269. config ARCH_EP93XX
  270. bool "EP93xx-based"
  271. select CPU_ARM920T
  272. select ARM_AMBA
  273. select ARM_VIC
  274. select COMMON_CLKDEV
  275. select ARCH_REQUIRE_GPIOLIB
  276. select ARCH_HAS_HOLES_MEMORYMODEL
  277. select ARCH_USES_GETTIMEOFFSET
  278. help
  279. This enables support for the Cirrus EP93xx series of CPUs.
  280. config ARCH_FOOTBRIDGE
  281. bool "FootBridge"
  282. select CPU_SA110
  283. select FOOTBRIDGE
  284. select ARCH_USES_GETTIMEOFFSET
  285. help
  286. Support for systems based on the DC21285 companion chip
  287. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  288. config ARCH_MXC
  289. bool "Freescale MXC/iMX-based"
  290. select GENERIC_CLOCKEVENTS
  291. select ARCH_REQUIRE_GPIOLIB
  292. select COMMON_CLKDEV
  293. help
  294. Support for Freescale MXC/iMX-based family of processors
  295. config ARCH_MXS
  296. bool "Freescale MXS-based"
  297. select GENERIC_CLOCKEVENTS
  298. select ARCH_REQUIRE_GPIOLIB
  299. select COMMON_CLKDEV
  300. help
  301. Support for Freescale MXS-based family of processors
  302. config ARCH_STMP3XXX
  303. bool "Freescale STMP3xxx"
  304. select CPU_ARM926T
  305. select COMMON_CLKDEV
  306. select ARCH_REQUIRE_GPIOLIB
  307. select GENERIC_CLOCKEVENTS
  308. select USB_ARCH_HAS_EHCI
  309. help
  310. Support for systems based on the Freescale 3xxx CPUs.
  311. config ARCH_NETX
  312. bool "Hilscher NetX based"
  313. select CPU_ARM926T
  314. select ARM_VIC
  315. select GENERIC_CLOCKEVENTS
  316. help
  317. This enables support for systems based on the Hilscher NetX Soc
  318. config ARCH_H720X
  319. bool "Hynix HMS720x-based"
  320. select CPU_ARM720T
  321. select ISA_DMA_API
  322. select ARCH_USES_GETTIMEOFFSET
  323. help
  324. This enables support for systems based on the Hynix HMS720x
  325. config ARCH_IOP13XX
  326. bool "IOP13xx-based"
  327. depends on MMU
  328. select CPU_XSC3
  329. select PLAT_IOP
  330. select PCI
  331. select ARCH_SUPPORTS_MSI
  332. select VMSPLIT_1G
  333. help
  334. Support for Intel's IOP13XX (XScale) family of processors.
  335. config ARCH_IOP32X
  336. bool "IOP32x-based"
  337. depends on MMU
  338. select CPU_XSCALE
  339. select PLAT_IOP
  340. select PCI
  341. select ARCH_REQUIRE_GPIOLIB
  342. help
  343. Support for Intel's 80219 and IOP32X (XScale) family of
  344. processors.
  345. config ARCH_IOP33X
  346. bool "IOP33x-based"
  347. depends on MMU
  348. select CPU_XSCALE
  349. select PLAT_IOP
  350. select PCI
  351. select ARCH_REQUIRE_GPIOLIB
  352. help
  353. Support for Intel's IOP33X (XScale) family of processors.
  354. config ARCH_IXP23XX
  355. bool "IXP23XX-based"
  356. depends on MMU
  357. select CPU_XSC3
  358. select PCI
  359. select ARCH_USES_GETTIMEOFFSET
  360. help
  361. Support for Intel's IXP23xx (XScale) family of processors.
  362. config ARCH_IXP2000
  363. bool "IXP2400/2800-based"
  364. depends on MMU
  365. select CPU_XSCALE
  366. select PCI
  367. select ARCH_USES_GETTIMEOFFSET
  368. help
  369. Support for Intel's IXP2400/2800 (XScale) family of processors.
  370. config ARCH_IXP4XX
  371. bool "IXP4xx-based"
  372. depends on MMU
  373. select CPU_XSCALE
  374. select GENERIC_GPIO
  375. select GENERIC_CLOCKEVENTS
  376. select DMABOUNCE if PCI
  377. help
  378. Support for Intel's IXP4XX (XScale) family of processors.
  379. config ARCH_DOVE
  380. bool "Marvell Dove"
  381. select PCI
  382. select ARCH_REQUIRE_GPIOLIB
  383. select GENERIC_CLOCKEVENTS
  384. select PLAT_ORION
  385. help
  386. Support for the Marvell Dove SoC 88AP510
  387. config ARCH_KIRKWOOD
  388. bool "Marvell Kirkwood"
  389. select CPU_FEROCEON
  390. select PCI
  391. select ARCH_REQUIRE_GPIOLIB
  392. select GENERIC_CLOCKEVENTS
  393. select PLAT_ORION
  394. help
  395. Support for the following Marvell Kirkwood series SoCs:
  396. 88F6180, 88F6192 and 88F6281.
  397. config ARCH_LOKI
  398. bool "Marvell Loki (88RC8480)"
  399. select CPU_FEROCEON
  400. select GENERIC_CLOCKEVENTS
  401. select PLAT_ORION
  402. help
  403. Support for the Marvell Loki (88RC8480) SoC.
  404. config ARCH_LPC32XX
  405. bool "NXP LPC32XX"
  406. select CPU_ARM926T
  407. select ARCH_REQUIRE_GPIOLIB
  408. select HAVE_IDE
  409. select ARM_AMBA
  410. select USB_ARCH_HAS_OHCI
  411. select COMMON_CLKDEV
  412. select GENERIC_TIME
  413. select GENERIC_CLOCKEVENTS
  414. help
  415. Support for the NXP LPC32XX family of processors
  416. config ARCH_MV78XX0
  417. bool "Marvell MV78xx0"
  418. select CPU_FEROCEON
  419. select PCI
  420. select ARCH_REQUIRE_GPIOLIB
  421. select GENERIC_CLOCKEVENTS
  422. select PLAT_ORION
  423. help
  424. Support for the following Marvell MV78xx0 series SoCs:
  425. MV781x0, MV782x0.
  426. config ARCH_ORION5X
  427. bool "Marvell Orion"
  428. depends on MMU
  429. select CPU_FEROCEON
  430. select PCI
  431. select ARCH_REQUIRE_GPIOLIB
  432. select GENERIC_CLOCKEVENTS
  433. select PLAT_ORION
  434. help
  435. Support for the following Marvell Orion 5x series SoCs:
  436. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  437. Orion-2 (5281), Orion-1-90 (6183).
  438. config ARCH_MMP
  439. bool "Marvell PXA168/910/MMP2"
  440. depends on MMU
  441. select ARCH_REQUIRE_GPIOLIB
  442. select COMMON_CLKDEV
  443. select GENERIC_CLOCKEVENTS
  444. select TICK_ONESHOT
  445. select PLAT_PXA
  446. select SPARSE_IRQ
  447. help
  448. Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
  449. config ARCH_KS8695
  450. bool "Micrel/Kendin KS8695"
  451. select CPU_ARM922T
  452. select ARCH_REQUIRE_GPIOLIB
  453. select ARCH_USES_GETTIMEOFFSET
  454. help
  455. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  456. System-on-Chip devices.
  457. config ARCH_NS9XXX
  458. bool "NetSilicon NS9xxx"
  459. select CPU_ARM926T
  460. select GENERIC_GPIO
  461. select GENERIC_CLOCKEVENTS
  462. select HAVE_CLK
  463. help
  464. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  465. System.
  466. <http://www.digi.com/products/microprocessors/index.jsp>
  467. config ARCH_W90X900
  468. bool "Nuvoton W90X900 CPU"
  469. select CPU_ARM926T
  470. select ARCH_REQUIRE_GPIOLIB
  471. select COMMON_CLKDEV
  472. select GENERIC_CLOCKEVENTS
  473. help
  474. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  475. At present, the w90x900 has been renamed nuc900, regarding
  476. the ARM series product line, you can login the following
  477. link address to know more.
  478. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  479. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  480. config ARCH_NUC93X
  481. bool "Nuvoton NUC93X CPU"
  482. select CPU_ARM926T
  483. select COMMON_CLKDEV
  484. help
  485. Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
  486. low-power and high performance MPEG-4/JPEG multimedia controller chip.
  487. config ARCH_TEGRA
  488. bool "NVIDIA Tegra"
  489. select GENERIC_TIME
  490. select GENERIC_CLOCKEVENTS
  491. select GENERIC_GPIO
  492. select HAVE_CLK
  493. select COMMON_CLKDEV
  494. select ARCH_HAS_BARRIERS if CACHE_L2X0
  495. select ARCH_HAS_CPUFREQ
  496. help
  497. This enables support for NVIDIA Tegra based systems (Tegra APX,
  498. Tegra 6xx and Tegra 2 series).
  499. config ARCH_PNX4008
  500. bool "Philips Nexperia PNX4008 Mobile"
  501. select CPU_ARM926T
  502. select COMMON_CLKDEV
  503. select ARCH_USES_GETTIMEOFFSET
  504. help
  505. This enables support for Philips PNX4008 mobile platform.
  506. config ARCH_PXA
  507. bool "PXA2xx/PXA3xx-based"
  508. depends on MMU
  509. select ARCH_MTD_XIP
  510. select ARCH_HAS_CPUFREQ
  511. select COMMON_CLKDEV
  512. select ARCH_REQUIRE_GPIOLIB
  513. select GENERIC_CLOCKEVENTS
  514. select TICK_ONESHOT
  515. select PLAT_PXA
  516. select SPARSE_IRQ
  517. help
  518. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  519. config ARCH_MSM
  520. bool "Qualcomm MSM"
  521. select HAVE_CLK
  522. select GENERIC_CLOCKEVENTS
  523. select ARCH_REQUIRE_GPIOLIB
  524. help
  525. Support for Qualcomm MSM/QSD based systems. This runs on the
  526. apps processor of the MSM/QSD and depends on a shared memory
  527. interface to the modem processor which runs the baseband
  528. stack and controls some vital subsystems
  529. (clock and power control, etc).
  530. config ARCH_SHMOBILE
  531. bool "Renesas SH-Mobile"
  532. help
  533. Support for Renesas's SH-Mobile ARM platforms
  534. config ARCH_RPC
  535. bool "RiscPC"
  536. select ARCH_ACORN
  537. select FIQ
  538. select TIMER_ACORN
  539. select ARCH_MAY_HAVE_PC_FDC
  540. select HAVE_PATA_PLATFORM
  541. select ISA_DMA_API
  542. select NO_IOPORT
  543. select ARCH_SPARSEMEM_ENABLE
  544. select ARCH_USES_GETTIMEOFFSET
  545. help
  546. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  547. CD-ROM interface, serial and parallel port, and the floppy drive.
  548. config ARCH_SA1100
  549. bool "SA1100-based"
  550. select CPU_SA1100
  551. select ISA
  552. select ARCH_SPARSEMEM_ENABLE
  553. select ARCH_MTD_XIP
  554. select ARCH_HAS_CPUFREQ
  555. select CPU_FREQ
  556. select GENERIC_CLOCKEVENTS
  557. select HAVE_CLK
  558. select TICK_ONESHOT
  559. select ARCH_REQUIRE_GPIOLIB
  560. help
  561. Support for StrongARM 11x0 based boards.
  562. config ARCH_S3C2410
  563. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
  564. select GENERIC_GPIO
  565. select ARCH_HAS_CPUFREQ
  566. select HAVE_CLK
  567. select ARCH_USES_GETTIMEOFFSET
  568. select HAVE_S3C2410_I2C if I2C
  569. help
  570. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  571. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  572. the Samsung SMDK2410 development board (and derivatives).
  573. Note, the S3C2416 and the S3C2450 are so close that they even share
  574. the same SoC ID code. This means that there is no seperate machine
  575. directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
  576. config ARCH_S3C64XX
  577. bool "Samsung S3C64XX"
  578. select PLAT_SAMSUNG
  579. select CPU_V6
  580. select ARM_VIC
  581. select HAVE_CLK
  582. select NO_IOPORT
  583. select ARCH_USES_GETTIMEOFFSET
  584. select ARCH_HAS_CPUFREQ
  585. select ARCH_REQUIRE_GPIOLIB
  586. select SAMSUNG_CLKSRC
  587. select SAMSUNG_IRQ_VIC_TIMER
  588. select SAMSUNG_IRQ_UART
  589. select S3C_GPIO_TRACK
  590. select S3C_GPIO_PULL_UPDOWN
  591. select S3C_GPIO_CFG_S3C24XX
  592. select S3C_GPIO_CFG_S3C64XX
  593. select S3C_DEV_NAND
  594. select USB_ARCH_HAS_OHCI
  595. select SAMSUNG_GPIOLIB_4BIT
  596. select HAVE_S3C2410_I2C if I2C
  597. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  598. help
  599. Samsung S3C64XX series based systems
  600. config ARCH_S5P64X0
  601. bool "Samsung S5P6440 S5P6450"
  602. select CPU_V6
  603. select GENERIC_GPIO
  604. select HAVE_CLK
  605. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  606. select ARCH_USES_GETTIMEOFFSET
  607. select HAVE_S3C2410_I2C if I2C
  608. select HAVE_S3C_RTC if RTC_CLASS
  609. help
  610. Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
  611. SMDK6450.
  612. config ARCH_S5P6442
  613. bool "Samsung S5P6442"
  614. select CPU_V6
  615. select GENERIC_GPIO
  616. select HAVE_CLK
  617. select ARCH_USES_GETTIMEOFFSET
  618. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  619. help
  620. Samsung S5P6442 CPU based systems
  621. config ARCH_S5PC100
  622. bool "Samsung S5PC100"
  623. select GENERIC_GPIO
  624. select HAVE_CLK
  625. select CPU_V7
  626. select ARM_L1_CACHE_SHIFT_6
  627. select ARCH_USES_GETTIMEOFFSET
  628. select HAVE_S3C2410_I2C if I2C
  629. select HAVE_S3C_RTC if RTC_CLASS
  630. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  631. help
  632. Samsung S5PC100 series based systems
  633. config ARCH_S5PV210
  634. bool "Samsung S5PV210/S5PC110"
  635. select CPU_V7
  636. select ARCH_SPARSEMEM_ENABLE
  637. select GENERIC_GPIO
  638. select HAVE_CLK
  639. select ARM_L1_CACHE_SHIFT_6
  640. select ARCH_HAS_CPUFREQ
  641. select ARCH_USES_GETTIMEOFFSET
  642. select HAVE_S3C2410_I2C if I2C
  643. select HAVE_S3C_RTC if RTC_CLASS
  644. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  645. help
  646. Samsung S5PV210/S5PC110 series based systems
  647. config ARCH_S5PV310
  648. bool "Samsung S5PV310/S5PC210"
  649. select CPU_V7
  650. select ARCH_SPARSEMEM_ENABLE
  651. select GENERIC_GPIO
  652. select HAVE_CLK
  653. select GENERIC_CLOCKEVENTS
  654. select HAVE_S3C_RTC if RTC_CLASS
  655. select HAVE_S3C2410_I2C if I2C
  656. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  657. help
  658. Samsung S5PV310 series based systems
  659. config ARCH_SHARK
  660. bool "Shark"
  661. select CPU_SA110
  662. select ISA
  663. select ISA_DMA
  664. select ZONE_DMA
  665. select PCI
  666. select ARCH_USES_GETTIMEOFFSET
  667. help
  668. Support for the StrongARM based Digital DNARD machine, also known
  669. as "Shark" (<http://www.shark-linux.de/shark.html>).
  670. config ARCH_TCC_926
  671. bool "Telechips TCC ARM926-based systems"
  672. select CPU_ARM926T
  673. select HAVE_CLK
  674. select COMMON_CLKDEV
  675. select GENERIC_CLOCKEVENTS
  676. help
  677. Support for Telechips TCC ARM926-based systems.
  678. config ARCH_LH7A40X
  679. bool "Sharp LH7A40X"
  680. select CPU_ARM922T
  681. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  682. select ARCH_USES_GETTIMEOFFSET
  683. help
  684. Say Y here for systems based on one of the Sharp LH7A40X
  685. System on a Chip processors. These CPUs include an ARM922T
  686. core with a wide array of integrated devices for
  687. hand-held and low-power applications.
  688. config ARCH_U300
  689. bool "ST-Ericsson U300 Series"
  690. depends on MMU
  691. select CPU_ARM926T
  692. select HAVE_TCM
  693. select ARM_AMBA
  694. select ARM_VIC
  695. select GENERIC_CLOCKEVENTS
  696. select COMMON_CLKDEV
  697. select GENERIC_GPIO
  698. help
  699. Support for ST-Ericsson U300 series mobile platforms.
  700. config ARCH_U8500
  701. bool "ST-Ericsson U8500 Series"
  702. select CPU_V7
  703. select ARM_AMBA
  704. select GENERIC_CLOCKEVENTS
  705. select COMMON_CLKDEV
  706. select ARCH_REQUIRE_GPIOLIB
  707. select ARCH_HAS_CPUFREQ
  708. help
  709. Support for ST-Ericsson's Ux500 architecture
  710. config ARCH_NOMADIK
  711. bool "STMicroelectronics Nomadik"
  712. select ARM_AMBA
  713. select ARM_VIC
  714. select CPU_ARM926T
  715. select COMMON_CLKDEV
  716. select GENERIC_CLOCKEVENTS
  717. select ARCH_REQUIRE_GPIOLIB
  718. help
  719. Support for the Nomadik platform by ST-Ericsson
  720. config ARCH_DAVINCI
  721. bool "TI DaVinci"
  722. select GENERIC_CLOCKEVENTS
  723. select ARCH_REQUIRE_GPIOLIB
  724. select ZONE_DMA
  725. select HAVE_IDE
  726. select COMMON_CLKDEV
  727. select GENERIC_ALLOCATOR
  728. select ARCH_HAS_HOLES_MEMORYMODEL
  729. help
  730. Support for TI's DaVinci platform.
  731. config ARCH_OMAP
  732. bool "TI OMAP"
  733. select HAVE_CLK
  734. select ARCH_REQUIRE_GPIOLIB
  735. select ARCH_HAS_CPUFREQ
  736. select GENERIC_CLOCKEVENTS
  737. select ARCH_HAS_HOLES_MEMORYMODEL
  738. help
  739. Support for TI's OMAP platform (OMAP1/2/3/4).
  740. config PLAT_SPEAR
  741. bool "ST SPEAr"
  742. select ARM_AMBA
  743. select ARCH_REQUIRE_GPIOLIB
  744. select COMMON_CLKDEV
  745. select GENERIC_CLOCKEVENTS
  746. select HAVE_CLK
  747. help
  748. Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
  749. endchoice
  750. #
  751. # This is sorted alphabetically by mach-* pathname. However, plat-*
  752. # Kconfigs may be included either alphabetically (according to the
  753. # plat- suffix) or along side the corresponding mach-* source.
  754. #
  755. source "arch/arm/mach-aaec2000/Kconfig"
  756. source "arch/arm/mach-at91/Kconfig"
  757. source "arch/arm/mach-bcmring/Kconfig"
  758. source "arch/arm/mach-clps711x/Kconfig"
  759. source "arch/arm/mach-cns3xxx/Kconfig"
  760. source "arch/arm/mach-davinci/Kconfig"
  761. source "arch/arm/mach-dove/Kconfig"
  762. source "arch/arm/mach-ep93xx/Kconfig"
  763. source "arch/arm/mach-footbridge/Kconfig"
  764. source "arch/arm/mach-gemini/Kconfig"
  765. source "arch/arm/mach-h720x/Kconfig"
  766. source "arch/arm/mach-integrator/Kconfig"
  767. source "arch/arm/mach-iop32x/Kconfig"
  768. source "arch/arm/mach-iop33x/Kconfig"
  769. source "arch/arm/mach-iop13xx/Kconfig"
  770. source "arch/arm/mach-ixp4xx/Kconfig"
  771. source "arch/arm/mach-ixp2000/Kconfig"
  772. source "arch/arm/mach-ixp23xx/Kconfig"
  773. source "arch/arm/mach-kirkwood/Kconfig"
  774. source "arch/arm/mach-ks8695/Kconfig"
  775. source "arch/arm/mach-lh7a40x/Kconfig"
  776. source "arch/arm/mach-loki/Kconfig"
  777. source "arch/arm/mach-lpc32xx/Kconfig"
  778. source "arch/arm/mach-msm/Kconfig"
  779. source "arch/arm/mach-mv78xx0/Kconfig"
  780. source "arch/arm/plat-mxc/Kconfig"
  781. source "arch/arm/mach-mxs/Kconfig"
  782. source "arch/arm/mach-netx/Kconfig"
  783. source "arch/arm/mach-nomadik/Kconfig"
  784. source "arch/arm/plat-nomadik/Kconfig"
  785. source "arch/arm/mach-ns9xxx/Kconfig"
  786. source "arch/arm/mach-nuc93x/Kconfig"
  787. source "arch/arm/plat-omap/Kconfig"
  788. source "arch/arm/mach-omap1/Kconfig"
  789. source "arch/arm/mach-omap2/Kconfig"
  790. source "arch/arm/mach-orion5x/Kconfig"
  791. source "arch/arm/mach-pxa/Kconfig"
  792. source "arch/arm/plat-pxa/Kconfig"
  793. source "arch/arm/mach-mmp/Kconfig"
  794. source "arch/arm/mach-realview/Kconfig"
  795. source "arch/arm/mach-sa1100/Kconfig"
  796. source "arch/arm/plat-samsung/Kconfig"
  797. source "arch/arm/plat-s3c24xx/Kconfig"
  798. source "arch/arm/plat-s5p/Kconfig"
  799. source "arch/arm/plat-spear/Kconfig"
  800. source "arch/arm/plat-tcc/Kconfig"
  801. if ARCH_S3C2410
  802. source "arch/arm/mach-s3c2400/Kconfig"
  803. source "arch/arm/mach-s3c2410/Kconfig"
  804. source "arch/arm/mach-s3c2412/Kconfig"
  805. source "arch/arm/mach-s3c2416/Kconfig"
  806. source "arch/arm/mach-s3c2440/Kconfig"
  807. source "arch/arm/mach-s3c2443/Kconfig"
  808. endif
  809. if ARCH_S3C64XX
  810. source "arch/arm/mach-s3c64xx/Kconfig"
  811. endif
  812. source "arch/arm/mach-s5p64x0/Kconfig"
  813. source "arch/arm/mach-s5p6442/Kconfig"
  814. source "arch/arm/mach-s5pc100/Kconfig"
  815. source "arch/arm/mach-s5pv210/Kconfig"
  816. source "arch/arm/mach-s5pv310/Kconfig"
  817. source "arch/arm/mach-shmobile/Kconfig"
  818. source "arch/arm/plat-stmp3xxx/Kconfig"
  819. source "arch/arm/mach-tegra/Kconfig"
  820. source "arch/arm/mach-u300/Kconfig"
  821. source "arch/arm/mach-ux500/Kconfig"
  822. source "arch/arm/mach-versatile/Kconfig"
  823. source "arch/arm/mach-vexpress/Kconfig"
  824. source "arch/arm/mach-w90x900/Kconfig"
  825. # Definitions to make life easier
  826. config ARCH_ACORN
  827. bool
  828. config PLAT_IOP
  829. bool
  830. select GENERIC_CLOCKEVENTS
  831. config PLAT_ORION
  832. bool
  833. config PLAT_PXA
  834. bool
  835. config PLAT_VERSATILE
  836. bool
  837. config ARM_TIMER_SP804
  838. bool
  839. source arch/arm/mm/Kconfig
  840. config IWMMXT
  841. bool "Enable iWMMXt support"
  842. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
  843. default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
  844. help
  845. Enable support for iWMMXt context switching at run time if
  846. running on a CPU that supports it.
  847. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  848. config XSCALE_PMU
  849. bool
  850. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  851. default y
  852. config CPU_HAS_PMU
  853. depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
  854. (!ARCH_OMAP3 || OMAP3_EMU)
  855. default y
  856. bool
  857. if !MMU
  858. source "arch/arm/Kconfig-nommu"
  859. endif
  860. config ARM_ERRATA_411920
  861. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  862. depends on CPU_V6
  863. help
  864. Invalidation of the Instruction Cache operation can
  865. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  866. It does not affect the MPCore. This option enables the ARM Ltd.
  867. recommended workaround.
  868. config ARM_ERRATA_430973
  869. bool "ARM errata: Stale prediction on replaced interworking branch"
  870. depends on CPU_V7
  871. help
  872. This option enables the workaround for the 430973 Cortex-A8
  873. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  874. interworking branch is replaced with another code sequence at the
  875. same virtual address, whether due to self-modifying code or virtual
  876. to physical address re-mapping, Cortex-A8 does not recover from the
  877. stale interworking branch prediction. This results in Cortex-A8
  878. executing the new code sequence in the incorrect ARM or Thumb state.
  879. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  880. and also flushes the branch target cache at every context switch.
  881. Note that setting specific bits in the ACTLR register may not be
  882. available in non-secure mode.
  883. config ARM_ERRATA_458693
  884. bool "ARM errata: Processor deadlock when a false hazard is created"
  885. depends on CPU_V7
  886. help
  887. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  888. erratum. For very specific sequences of memory operations, it is
  889. possible for a hazard condition intended for a cache line to instead
  890. be incorrectly associated with a different cache line. This false
  891. hazard might then cause a processor deadlock. The workaround enables
  892. the L1 caching of the NEON accesses and disables the PLD instruction
  893. in the ACTLR register. Note that setting specific bits in the ACTLR
  894. register may not be available in non-secure mode.
  895. config ARM_ERRATA_460075
  896. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  897. depends on CPU_V7
  898. help
  899. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  900. erratum. Any asynchronous access to the L2 cache may encounter a
  901. situation in which recent store transactions to the L2 cache are lost
  902. and overwritten with stale memory contents from external memory. The
  903. workaround disables the write-allocate mode for the L2 cache via the
  904. ACTLR register. Note that setting specific bits in the ACTLR register
  905. may not be available in non-secure mode.
  906. config ARM_ERRATA_742230
  907. bool "ARM errata: DMB operation may be faulty"
  908. depends on CPU_V7 && SMP
  909. help
  910. This option enables the workaround for the 742230 Cortex-A9
  911. (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
  912. between two write operations may not ensure the correct visibility
  913. ordering of the two writes. This workaround sets a specific bit in
  914. the diagnostic register of the Cortex-A9 which causes the DMB
  915. instruction to behave as a DSB, ensuring the correct behaviour of
  916. the two writes.
  917. config ARM_ERRATA_742231
  918. bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
  919. depends on CPU_V7 && SMP
  920. help
  921. This option enables the workaround for the 742231 Cortex-A9
  922. (r2p0..r2p2) erratum. Under certain conditions, specific to the
  923. Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
  924. accessing some data located in the same cache line, may get corrupted
  925. data due to bad handling of the address hazard when the line gets
  926. replaced from one of the CPUs at the same time as another CPU is
  927. accessing it. This workaround sets specific bits in the diagnostic
  928. register of the Cortex-A9 which reduces the linefill issuing
  929. capabilities of the processor.
  930. config PL310_ERRATA_588369
  931. bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
  932. depends on CACHE_L2X0 && ARCH_OMAP4
  933. help
  934. The PL310 L2 cache controller implements three types of Clean &
  935. Invalidate maintenance operations: by Physical Address
  936. (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
  937. They are architecturally defined to behave as the execution of a
  938. clean operation followed immediately by an invalidate operation,
  939. both performing to the same memory location. This functionality
  940. is not correctly implemented in PL310 as clean lines are not
  941. invalidated as a result of these operations. Note that this errata
  942. uses Texas Instrument's secure monitor api.
  943. config ARM_ERRATA_720789
  944. bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
  945. depends on CPU_V7 && SMP
  946. help
  947. This option enables the workaround for the 720789 Cortex-A9 (prior to
  948. r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
  949. broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
  950. As a consequence of this erratum, some TLB entries which should be
  951. invalidated are not, resulting in an incoherency in the system page
  952. tables. The workaround changes the TLB flushing routines to invalidate
  953. entries regardless of the ASID.
  954. config ARM_ERRATA_743622
  955. bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
  956. depends on CPU_V7
  957. help
  958. This option enables the workaround for the 743622 Cortex-A9
  959. (r2p0..r2p2) erratum. Under very rare conditions, a faulty
  960. optimisation in the Cortex-A9 Store Buffer may lead to data
  961. corruption. This workaround sets a specific bit in the diagnostic
  962. register of the Cortex-A9 which disables the Store Buffer
  963. optimisation, preventing the defect from occurring. This has no
  964. visible impact on the overall performance or power consumption of the
  965. processor.
  966. endmenu
  967. source "arch/arm/common/Kconfig"
  968. menu "Bus support"
  969. config ARM_AMBA
  970. bool
  971. config ISA
  972. bool
  973. help
  974. Find out whether you have ISA slots on your motherboard. ISA is the
  975. name of a bus system, i.e. the way the CPU talks to the other stuff
  976. inside your box. Other bus systems are PCI, EISA, MicroChannel
  977. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  978. newer boards don't support it. If you have ISA, say Y, otherwise N.
  979. # Select ISA DMA controller support
  980. config ISA_DMA
  981. bool
  982. select ISA_DMA_API
  983. # Select ISA DMA interface
  984. config ISA_DMA_API
  985. bool
  986. config PCI
  987. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX
  988. help
  989. Find out whether you have a PCI motherboard. PCI is the name of a
  990. bus system, i.e. the way the CPU talks to the other stuff inside
  991. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  992. VESA. If you have PCI, say Y, otherwise N.
  993. config PCI_DOMAINS
  994. bool
  995. depends on PCI
  996. config PCI_SYSCALL
  997. def_bool PCI
  998. # Select the host bridge type
  999. config PCI_HOST_VIA82C505
  1000. bool
  1001. depends on PCI && ARCH_SHARK
  1002. default y
  1003. config PCI_HOST_ITE8152
  1004. bool
  1005. depends on PCI && MACH_ARMCORE
  1006. default y
  1007. select DMABOUNCE
  1008. source "drivers/pci/Kconfig"
  1009. source "drivers/pcmcia/Kconfig"
  1010. endmenu
  1011. menu "Kernel Features"
  1012. source "kernel/time/Kconfig"
  1013. config SMP
  1014. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  1015. depends on EXPERIMENTAL
  1016. depends on GENERIC_CLOCKEVENTS
  1017. depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
  1018. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
  1019. ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
  1020. ARCH_MSM_SCORPIONMP
  1021. select USE_GENERIC_SMP_HELPERS
  1022. select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
  1023. help
  1024. This enables support for systems with more than one CPU. If you have
  1025. a system with only one CPU, like most personal computers, say N. If
  1026. you have a system with more than one CPU, say Y.
  1027. If you say N here, the kernel will run on single and multiprocessor
  1028. machines, but will use only one CPU of a multiprocessor machine. If
  1029. you say Y here, the kernel will run on many, but not all, single
  1030. processor machines. On a single processor machine, the kernel will
  1031. run faster if you say N here.
  1032. See also <file:Documentation/i386/IO-APIC.txt>,
  1033. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  1034. <http://tldp.org/HOWTO/SMP-HOWTO.html>.
  1035. If you don't know what to do here, say N.
  1036. config SMP_ON_UP
  1037. bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
  1038. depends on EXPERIMENTAL
  1039. depends on SMP && !XIP && !THUMB2_KERNEL
  1040. default y
  1041. help
  1042. SMP kernels contain instructions which fail on non-SMP processors.
  1043. Enabling this option allows the kernel to modify itself to make
  1044. these instructions safe. Disabling it allows about 1K of space
  1045. savings.
  1046. If you don't know what to do here, say Y.
  1047. config HAVE_ARM_SCU
  1048. bool
  1049. depends on SMP
  1050. help
  1051. This option enables support for the ARM system coherency unit
  1052. config HAVE_ARM_TWD
  1053. bool
  1054. depends on SMP
  1055. help
  1056. This options enables support for the ARM timer and watchdog unit
  1057. choice
  1058. prompt "Memory split"
  1059. default VMSPLIT_3G
  1060. help
  1061. Select the desired split between kernel and user memory.
  1062. If you are not absolutely sure what you are doing, leave this
  1063. option alone!
  1064. config VMSPLIT_3G
  1065. bool "3G/1G user/kernel split"
  1066. config VMSPLIT_2G
  1067. bool "2G/2G user/kernel split"
  1068. config VMSPLIT_1G
  1069. bool "1G/3G user/kernel split"
  1070. endchoice
  1071. config PAGE_OFFSET
  1072. hex
  1073. default 0x40000000 if VMSPLIT_1G
  1074. default 0x80000000 if VMSPLIT_2G
  1075. default 0xC0000000
  1076. config NR_CPUS
  1077. int "Maximum number of CPUs (2-32)"
  1078. range 2 32
  1079. depends on SMP
  1080. default "4"
  1081. config HOTPLUG_CPU
  1082. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  1083. depends on SMP && HOTPLUG && EXPERIMENTAL
  1084. depends on !ARCH_MSM
  1085. help
  1086. Say Y here to experiment with turning CPUs off and on. CPUs
  1087. can be controlled through /sys/devices/system/cpu.
  1088. config LOCAL_TIMERS
  1089. bool "Use local timer interrupts"
  1090. depends on SMP
  1091. default y
  1092. select HAVE_ARM_TWD if !ARCH_MSM_SCORPIONMP
  1093. help
  1094. Enable support for local timers on SMP platforms, rather then the
  1095. legacy IPI broadcast method. Local timers allows the system
  1096. accounting to be spread across the timer interval, preventing a
  1097. "thundering herd" at every timer tick.
  1098. source kernel/Kconfig.preempt
  1099. config HZ
  1100. int
  1101. default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
  1102. ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
  1103. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  1104. default AT91_TIMER_HZ if ARCH_AT91
  1105. default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
  1106. default 100
  1107. config THUMB2_KERNEL
  1108. bool "Compile the kernel in Thumb-2 mode"
  1109. depends on CPU_V7 && !CPU_V6 && EXPERIMENTAL
  1110. select AEABI
  1111. select ARM_ASM_UNIFIED
  1112. help
  1113. By enabling this option, the kernel will be compiled in
  1114. Thumb-2 mode. A compiler/assembler that understand the unified
  1115. ARM-Thumb syntax is needed.
  1116. If unsure, say N.
  1117. config ARM_ASM_UNIFIED
  1118. bool
  1119. config AEABI
  1120. bool "Use the ARM EABI to compile the kernel"
  1121. help
  1122. This option allows for the kernel to be compiled using the latest
  1123. ARM ABI (aka EABI). This is only useful if you are using a user
  1124. space environment that is also compiled with EABI.
  1125. Since there are major incompatibilities between the legacy ABI and
  1126. EABI, especially with regard to structure member alignment, this
  1127. option also changes the kernel syscall calling convention to
  1128. disambiguate both ABIs and allow for backward compatibility support
  1129. (selected with CONFIG_OABI_COMPAT).
  1130. To use this you need GCC version 4.0.0 or later.
  1131. config OABI_COMPAT
  1132. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  1133. depends on AEABI && EXPERIMENTAL
  1134. default y
  1135. help
  1136. This option preserves the old syscall interface along with the
  1137. new (ARM EABI) one. It also provides a compatibility layer to
  1138. intercept syscalls that have structure arguments which layout
  1139. in memory differs between the legacy ABI and the new ARM EABI
  1140. (only for non "thumb" binaries). This option adds a tiny
  1141. overhead to all syscalls and produces a slightly larger kernel.
  1142. If you know you'll be using only pure EABI user space then you
  1143. can say N here. If this option is not selected and you attempt
  1144. to execute a legacy ABI binary then the result will be
  1145. UNPREDICTABLE (in fact it can be predicted that it won't work
  1146. at all). If in doubt say Y.
  1147. config ARCH_HAS_HOLES_MEMORYMODEL
  1148. bool
  1149. config ARCH_SPARSEMEM_ENABLE
  1150. bool
  1151. config ARCH_SPARSEMEM_DEFAULT
  1152. def_bool ARCH_SPARSEMEM_ENABLE
  1153. config ARCH_SELECT_MEMORY_MODEL
  1154. def_bool ARCH_SPARSEMEM_ENABLE
  1155. config HIGHMEM
  1156. bool "High Memory Support (EXPERIMENTAL)"
  1157. depends on MMU && EXPERIMENTAL
  1158. help
  1159. The address space of ARM processors is only 4 Gigabytes large
  1160. and it has to accommodate user address space, kernel address
  1161. space as well as some memory mapped IO. That means that, if you
  1162. have a large amount of physical memory and/or IO, not all of the
  1163. memory can be "permanently mapped" by the kernel. The physical
  1164. memory that is not permanently mapped is called "high memory".
  1165. Depending on the selected kernel/user memory split, minimum
  1166. vmalloc space and actual amount of RAM, you may not need this
  1167. option which should result in a slightly faster kernel.
  1168. If unsure, say n.
  1169. config HIGHPTE
  1170. bool "Allocate 2nd-level pagetables from highmem"
  1171. depends on HIGHMEM
  1172. depends on !OUTER_CACHE
  1173. config HW_PERF_EVENTS
  1174. bool "Enable hardware performance counter support for perf events"
  1175. depends on PERF_EVENTS && CPU_HAS_PMU
  1176. default y
  1177. help
  1178. Enable hardware performance counter support for perf events. If
  1179. disabled, perf events will use software events only.
  1180. config SPARSE_IRQ
  1181. def_bool n
  1182. help
  1183. This enables support for sparse irqs. This is useful in general
  1184. as most CPUs have a fairly sparse array of IRQ vectors, which
  1185. the irq_desc then maps directly on to. Systems with a high
  1186. number of off-chip IRQs will want to treat this as
  1187. experimental until they have been independently verified.
  1188. source "mm/Kconfig"
  1189. config FORCE_MAX_ZONEORDER
  1190. int "Maximum zone order" if ARCH_SHMOBILE
  1191. range 11 64 if ARCH_SHMOBILE
  1192. default "9" if SA1111
  1193. default "11"
  1194. help
  1195. The kernel memory allocator divides physically contiguous memory
  1196. blocks into "zones", where each zone is a power of two number of
  1197. pages. This option selects the largest power of two that the kernel
  1198. keeps in the memory allocator. If you need to allocate very large
  1199. blocks of physically contiguous memory, then you may need to
  1200. increase this value.
  1201. This config option is actually maximum order plus one. For example,
  1202. a value of 11 means that the largest free memory block is 2^10 pages.
  1203. config LEDS
  1204. bool "Timer and CPU usage LEDs"
  1205. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  1206. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  1207. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  1208. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  1209. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  1210. ARCH_AT91 || ARCH_DAVINCI || \
  1211. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  1212. help
  1213. If you say Y here, the LEDs on your machine will be used
  1214. to provide useful information about your current system status.
  1215. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  1216. be able to select which LEDs are active using the options below. If
  1217. you are compiling a kernel for the EBSA-110 or the LART however, the
  1218. red LED will simply flash regularly to indicate that the system is
  1219. still functional. It is safe to say Y here if you have a CATS
  1220. system, but the driver will do nothing.
  1221. config LEDS_TIMER
  1222. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  1223. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1224. || MACH_OMAP_PERSEUS2
  1225. depends on LEDS
  1226. depends on !GENERIC_CLOCKEVENTS
  1227. default y if ARCH_EBSA110
  1228. help
  1229. If you say Y here, one of the system LEDs (the green one on the
  1230. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1231. will flash regularly to indicate that the system is still
  1232. operational. This is mainly useful to kernel hackers who are
  1233. debugging unstable kernels.
  1234. The LART uses the same LED for both Timer LED and CPU usage LED
  1235. functions. You may choose to use both, but the Timer LED function
  1236. will overrule the CPU usage LED.
  1237. config LEDS_CPU
  1238. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1239. !ARCH_OMAP) \
  1240. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1241. || MACH_OMAP_PERSEUS2
  1242. depends on LEDS
  1243. help
  1244. If you say Y here, the red LED will be used to give a good real
  1245. time indication of CPU usage, by lighting whenever the idle task
  1246. is not currently executing.
  1247. The LART uses the same LED for both Timer LED and CPU usage LED
  1248. functions. You may choose to use both, but the Timer LED function
  1249. will overrule the CPU usage LED.
  1250. config ALIGNMENT_TRAP
  1251. bool
  1252. depends on CPU_CP15_MMU
  1253. default y if !ARCH_EBSA110
  1254. select HAVE_PROC_CPU if PROC_FS
  1255. help
  1256. ARM processors cannot fetch/store information which is not
  1257. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1258. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1259. fetch/store instructions will be emulated in software if you say
  1260. here, which has a severe performance impact. This is necessary for
  1261. correct operation of some network protocols. With an IP-only
  1262. configuration it is safe to say N, otherwise say Y.
  1263. config UACCESS_WITH_MEMCPY
  1264. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1265. depends on MMU && EXPERIMENTAL
  1266. default y if CPU_FEROCEON
  1267. help
  1268. Implement faster copy_to_user and clear_user methods for CPU
  1269. cores where a 8-word STM instruction give significantly higher
  1270. memory write throughput than a sequence of individual 32bit stores.
  1271. A possible side effect is a slight increase in scheduling latency
  1272. between threads sharing the same address space if they invoke
  1273. such copy operations with large buffers.
  1274. However, if the CPU data cache is using a write-allocate mode,
  1275. this option is unlikely to provide any performance gain.
  1276. config SECCOMP
  1277. bool
  1278. prompt "Enable seccomp to safely compute untrusted bytecode"
  1279. ---help---
  1280. This kernel feature is useful for number crunching applications
  1281. that may need to compute untrusted bytecode during their
  1282. execution. By using pipes or other transports made available to
  1283. the process as file descriptors supporting the read/write
  1284. syscalls, it's possible to isolate those applications in
  1285. their own address space using seccomp. Once seccomp is
  1286. enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
  1287. and the task is only allowed to execute a few safe syscalls
  1288. defined by each seccomp mode.
  1289. config CC_STACKPROTECTOR
  1290. bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
  1291. help
  1292. This option turns on the -fstack-protector GCC feature. This
  1293. feature puts, at the beginning of functions, a canary value on
  1294. the stack just before the return address, and validates
  1295. the value just before actually returning. Stack based buffer
  1296. overflows (that need to overwrite this return address) now also
  1297. overwrite the canary, which gets detected and the attack is then
  1298. neutralized via a kernel panic.
  1299. This feature requires gcc version 4.2 or above.
  1300. config DEPRECATED_PARAM_STRUCT
  1301. bool "Provide old way to pass kernel parameters"
  1302. help
  1303. This was deprecated in 2001 and announced to live on for 5 years.
  1304. Some old boot loaders still use this way.
  1305. endmenu
  1306. menu "Boot options"
  1307. # Compressed boot loader in ROM. Yes, we really want to ask about
  1308. # TEXT and BSS so we preserve their values in the config files.
  1309. config ZBOOT_ROM_TEXT
  1310. hex "Compressed ROM boot loader base address"
  1311. default "0"
  1312. help
  1313. The physical address at which the ROM-able zImage is to be
  1314. placed in the target. Platforms which normally make use of
  1315. ROM-able zImage formats normally set this to a suitable
  1316. value in their defconfig file.
  1317. If ZBOOT_ROM is not enabled, this has no effect.
  1318. config ZBOOT_ROM_BSS
  1319. hex "Compressed ROM boot loader BSS address"
  1320. default "0"
  1321. help
  1322. The base address of an area of read/write memory in the target
  1323. for the ROM-able zImage which must be available while the
  1324. decompressor is running. It must be large enough to hold the
  1325. entire decompressed kernel plus an additional 128 KiB.
  1326. Platforms which normally make use of ROM-able zImage formats
  1327. normally set this to a suitable value in their defconfig file.
  1328. If ZBOOT_ROM is not enabled, this has no effect.
  1329. config ZBOOT_ROM
  1330. bool "Compressed boot loader in ROM/flash"
  1331. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1332. help
  1333. Say Y here if you intend to execute your compressed kernel image
  1334. (zImage) directly from ROM or flash. If unsure, say N.
  1335. config CMDLINE
  1336. string "Default kernel command string"
  1337. default ""
  1338. help
  1339. On some architectures (EBSA110 and CATS), there is currently no way
  1340. for the boot loader to pass arguments to the kernel. For these
  1341. architectures, you should supply some command-line options at build
  1342. time by entering them here. As a minimum, you should specify the
  1343. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1344. config CMDLINE_FORCE
  1345. bool "Always use the default kernel command string"
  1346. depends on CMDLINE != ""
  1347. help
  1348. Always use the default kernel command string, even if the boot
  1349. loader passes other arguments to the kernel.
  1350. This is useful if you cannot or don't want to change the
  1351. command-line options your boot loader passes to the kernel.
  1352. If unsure, say N.
  1353. config XIP_KERNEL
  1354. bool "Kernel Execute-In-Place from ROM"
  1355. depends on !ZBOOT_ROM
  1356. help
  1357. Execute-In-Place allows the kernel to run from non-volatile storage
  1358. directly addressable by the CPU, such as NOR flash. This saves RAM
  1359. space since the text section of the kernel is not loaded from flash
  1360. to RAM. Read-write sections, such as the data section and stack,
  1361. are still copied to RAM. The XIP kernel is not compressed since
  1362. it has to run directly from flash, so it will take more space to
  1363. store it. The flash address used to link the kernel object files,
  1364. and for storing it, is configuration dependent. Therefore, if you
  1365. say Y here, you must know the proper physical address where to
  1366. store the kernel image depending on your own flash memory usage.
  1367. Also note that the make target becomes "make xipImage" rather than
  1368. "make zImage" or "make Image". The final kernel binary to put in
  1369. ROM memory will be arch/arm/boot/xipImage.
  1370. If unsure, say N.
  1371. config XIP_PHYS_ADDR
  1372. hex "XIP Kernel Physical Location"
  1373. depends on XIP_KERNEL
  1374. default "0x00080000"
  1375. help
  1376. This is the physical address in your flash memory the kernel will
  1377. be linked for and stored to. This address is dependent on your
  1378. own flash usage.
  1379. config KEXEC
  1380. bool "Kexec system call (EXPERIMENTAL)"
  1381. depends on EXPERIMENTAL
  1382. help
  1383. kexec is a system call that implements the ability to shutdown your
  1384. current kernel, and to start another kernel. It is like a reboot
  1385. but it is independent of the system firmware. And like a reboot
  1386. you can start any kernel with it, not just Linux.
  1387. It is an ongoing process to be certain the hardware in a machine
  1388. is properly shutdown, so do not be surprised if this code does not
  1389. initially work for you. It may help to enable device hotplugging
  1390. support.
  1391. config ATAGS_PROC
  1392. bool "Export atags in procfs"
  1393. depends on KEXEC
  1394. default y
  1395. help
  1396. Should the atags used to boot the kernel be exported in an "atags"
  1397. file in procfs. Useful with kexec.
  1398. config AUTO_ZRELADDR
  1399. bool "Auto calculation of the decompressed kernel image address"
  1400. depends on !ZBOOT_ROM && !ARCH_U300
  1401. help
  1402. ZRELADDR is the physical address where the decompressed kernel
  1403. image will be placed. If AUTO_ZRELADDR is selected, the address
  1404. will be determined at run-time by masking the current IP with
  1405. 0xf8000000. This assumes the zImage being placed in the first 128MB
  1406. from start of memory.
  1407. endmenu
  1408. menu "CPU Power Management"
  1409. if ARCH_HAS_CPUFREQ
  1410. source "drivers/cpufreq/Kconfig"
  1411. config CPU_FREQ_IMX
  1412. tristate "CPUfreq driver for i.MX CPUs"
  1413. depends on ARCH_MXC && CPU_FREQ
  1414. help
  1415. This enables the CPUfreq driver for i.MX CPUs.
  1416. config CPU_FREQ_SA1100
  1417. bool
  1418. config CPU_FREQ_SA1110
  1419. bool
  1420. config CPU_FREQ_INTEGRATOR
  1421. tristate "CPUfreq driver for ARM Integrator CPUs"
  1422. depends on ARCH_INTEGRATOR && CPU_FREQ
  1423. default y
  1424. help
  1425. This enables the CPUfreq driver for ARM Integrator CPUs.
  1426. For details, take a look at <file:Documentation/cpu-freq>.
  1427. If in doubt, say Y.
  1428. config CPU_FREQ_PXA
  1429. bool
  1430. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1431. default y
  1432. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1433. config CPU_FREQ_S3C64XX
  1434. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1435. depends on CPU_FREQ && CPU_S3C6410
  1436. config CPU_FREQ_S3C
  1437. bool
  1438. help
  1439. Internal configuration node for common cpufreq on Samsung SoC
  1440. config CPU_FREQ_S3C24XX
  1441. bool "CPUfreq driver for Samsung S3C24XX series CPUs"
  1442. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1443. select CPU_FREQ_S3C
  1444. help
  1445. This enables the CPUfreq driver for the Samsung S3C24XX family
  1446. of CPUs.
  1447. For details, take a look at <file:Documentation/cpu-freq>.
  1448. If in doubt, say N.
  1449. config CPU_FREQ_S3C24XX_PLL
  1450. bool "Support CPUfreq changing of PLL frequency"
  1451. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1452. help
  1453. Compile in support for changing the PLL frequency from the
  1454. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1455. after a frequency change, so by default it is not enabled.
  1456. This also means that the PLL tables for the selected CPU(s) will
  1457. be built which may increase the size of the kernel image.
  1458. config CPU_FREQ_S3C24XX_DEBUG
  1459. bool "Debug CPUfreq Samsung driver core"
  1460. depends on CPU_FREQ_S3C24XX
  1461. help
  1462. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1463. config CPU_FREQ_S3C24XX_IODEBUG
  1464. bool "Debug CPUfreq Samsung driver IO timing"
  1465. depends on CPU_FREQ_S3C24XX
  1466. help
  1467. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1468. config CPU_FREQ_S3C24XX_DEBUGFS
  1469. bool "Export debugfs for CPUFreq"
  1470. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1471. help
  1472. Export status information via debugfs.
  1473. endif
  1474. source "drivers/cpuidle/Kconfig"
  1475. endmenu
  1476. menu "Floating point emulation"
  1477. comment "At least one emulation must be selected"
  1478. config FPE_NWFPE
  1479. bool "NWFPE math emulation"
  1480. depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
  1481. ---help---
  1482. Say Y to include the NWFPE floating point emulator in the kernel.
  1483. This is necessary to run most binaries. Linux does not currently
  1484. support floating point hardware so you need to say Y here even if
  1485. your machine has an FPA or floating point co-processor podule.
  1486. You may say N here if you are going to load the Acorn FPEmulator
  1487. early in the bootup.
  1488. config FPE_NWFPE_XP
  1489. bool "Support extended precision"
  1490. depends on FPE_NWFPE
  1491. help
  1492. Say Y to include 80-bit support in the kernel floating-point
  1493. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1494. Note that gcc does not generate 80-bit operations by default,
  1495. so in most cases this option only enlarges the size of the
  1496. floating point emulator without any good reason.
  1497. You almost surely want to say N here.
  1498. config FPE_FASTFPE
  1499. bool "FastFPE math emulation (EXPERIMENTAL)"
  1500. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1501. ---help---
  1502. Say Y here to include the FAST floating point emulator in the kernel.
  1503. This is an experimental much faster emulator which now also has full
  1504. precision for the mantissa. It does not support any exceptions.
  1505. It is very simple, and approximately 3-6 times faster than NWFPE.
  1506. It should be sufficient for most programs. It may be not suitable
  1507. for scientific calculations, but you have to check this for yourself.
  1508. If you do not feel you need a faster FP emulation you should better
  1509. choose NWFPE.
  1510. config VFP
  1511. bool "VFP-format floating point maths"
  1512. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1513. help
  1514. Say Y to include VFP support code in the kernel. This is needed
  1515. if your hardware includes a VFP unit.
  1516. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1517. release notes and additional status information.
  1518. Say N if your target does not have VFP hardware.
  1519. config VFPv3
  1520. bool
  1521. depends on VFP
  1522. default y if CPU_V7
  1523. config NEON
  1524. bool "Advanced SIMD (NEON) Extension support"
  1525. depends on VFPv3 && CPU_V7
  1526. help
  1527. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1528. Extension.
  1529. endmenu
  1530. menu "Userspace binary formats"
  1531. source "fs/Kconfig.binfmt"
  1532. config ARTHUR
  1533. tristate "RISC OS personality"
  1534. depends on !AEABI
  1535. help
  1536. Say Y here to include the kernel code necessary if you want to run
  1537. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1538. experimental; if this sounds frightening, say N and sleep in peace.
  1539. You can also say M here to compile this support as a module (which
  1540. will be called arthur).
  1541. endmenu
  1542. menu "Power management options"
  1543. source "kernel/power/Kconfig"
  1544. config ARCH_SUSPEND_POSSIBLE
  1545. def_bool y
  1546. endmenu
  1547. source "net/Kconfig"
  1548. source "drivers/Kconfig"
  1549. source "fs/Kconfig"
  1550. source "arch/arm/Kconfig.debug"
  1551. source "security/Kconfig"
  1552. source "crypto/Kconfig"
  1553. source "lib/Kconfig"