Kconfig 50 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 HAVE_MEMBLOCK
  12. select RTC_LIB
  13. select SYS_SUPPORTS_APM_EMULATION
  14. select GENERIC_ATOMIC64 if (!CPU_32v6K)
  15. select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
  16. select HAVE_ARCH_KGDB
  17. select HAVE_KPROBES if (!XIP_KERNEL)
  18. select HAVE_KRETPROBES if (HAVE_KPROBES)
  19. select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  20. select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
  21. select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
  22. select HAVE_GENERIC_DMA_COHERENT
  23. select HAVE_KERNEL_GZIP
  24. select HAVE_KERNEL_LZO
  25. select HAVE_KERNEL_LZMA
  26. select HAVE_PERF_EVENTS
  27. select PERF_USE_VMALLOC
  28. select HAVE_REGS_AND_STACK_ACCESS_API
  29. help
  30. The ARM series is a line of low-power-consumption RISC chip designs
  31. licensed by ARM Ltd and targeted at embedded applications and
  32. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  33. manufactured, but legacy ARM-based PC hardware remains popular in
  34. Europe. There is an ARM Linux project with a web page at
  35. <http://www.arm.linux.org.uk/>.
  36. config HAVE_PWM
  37. bool
  38. config SYS_SUPPORTS_APM_EMULATION
  39. bool
  40. config GENERIC_GPIO
  41. bool
  42. config ARCH_USES_GETTIMEOFFSET
  43. bool
  44. default n
  45. config GENERIC_CLOCKEVENTS
  46. bool
  47. config GENERIC_CLOCKEVENTS_BROADCAST
  48. bool
  49. depends on GENERIC_CLOCKEVENTS
  50. default y if SMP
  51. config HAVE_TCM
  52. bool
  53. select GENERIC_ALLOCATOR
  54. config HAVE_PROC_CPU
  55. bool
  56. config NO_IOPORT
  57. bool
  58. config EISA
  59. bool
  60. ---help---
  61. The Extended Industry Standard Architecture (EISA) bus was
  62. developed as an open alternative to the IBM MicroChannel bus.
  63. The EISA bus provided some of the features of the IBM MicroChannel
  64. bus while maintaining backward compatibility with cards made for
  65. the older ISA bus. The EISA bus saw limited use between 1988 and
  66. 1995 when it was made obsolete by the PCI bus.
  67. Say Y here if you are building a kernel for an EISA-based machine.
  68. Otherwise, say N.
  69. config SBUS
  70. bool
  71. config MCA
  72. bool
  73. help
  74. MicroChannel Architecture is found in some IBM PS/2 machines and
  75. laptops. It is a bus system similar to PCI or ISA. See
  76. <file:Documentation/mca.txt> (and especially the web page given
  77. there) before attempting to build an MCA bus kernel.
  78. config GENERIC_HARDIRQS
  79. bool
  80. default y
  81. config STACKTRACE_SUPPORT
  82. bool
  83. default y
  84. config HAVE_LATENCYTOP_SUPPORT
  85. bool
  86. depends on !SMP
  87. default y
  88. config LOCKDEP_SUPPORT
  89. bool
  90. default y
  91. config TRACE_IRQFLAGS_SUPPORT
  92. bool
  93. default y
  94. config HARDIRQS_SW_RESEND
  95. bool
  96. default y
  97. config GENERIC_IRQ_PROBE
  98. bool
  99. default y
  100. config GENERIC_LOCKBREAK
  101. bool
  102. default y
  103. depends on SMP && PREEMPT
  104. config RWSEM_GENERIC_SPINLOCK
  105. bool
  106. default y
  107. config RWSEM_XCHGADD_ALGORITHM
  108. bool
  109. config ARCH_HAS_ILOG2_U32
  110. bool
  111. config ARCH_HAS_ILOG2_U64
  112. bool
  113. config ARCH_HAS_CPUFREQ
  114. bool
  115. help
  116. Internal node to signify that the ARCH has CPUFREQ support
  117. and that the relevant menu configurations are displayed for
  118. it.
  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. select ARCH_USES_GETTIMEOFFSET
  225. help
  226. This enables support for systems based on the Atmel AT91RM9200,
  227. AT91SAM9 and AT91CAP9 processors.
  228. config ARCH_BCMRING
  229. bool "Broadcom BCMRING"
  230. depends on MMU
  231. select CPU_V6
  232. select ARM_AMBA
  233. select COMMON_CLKDEV
  234. select GENERIC_CLOCKEVENTS
  235. select ARCH_WANT_OPTIONAL_GPIOLIB
  236. help
  237. Support for Broadcom's BCMRing platform.
  238. config ARCH_CLPS711X
  239. bool "Cirrus Logic CLPS711x/EP721x-based"
  240. select CPU_ARM720T
  241. select ARCH_USES_GETTIMEOFFSET
  242. help
  243. Support for Cirrus Logic 711x/721x based boards.
  244. config ARCH_CNS3XXX
  245. bool "Cavium Networks CNS3XXX family"
  246. select CPU_V6
  247. select GENERIC_CLOCKEVENTS
  248. select ARM_GIC
  249. select PCI_DOMAINS if PCI
  250. help
  251. Support for Cavium Networks CNS3XXX platform.
  252. config ARCH_GEMINI
  253. bool "Cortina Systems Gemini"
  254. select CPU_FA526
  255. select ARCH_REQUIRE_GPIOLIB
  256. select ARCH_USES_GETTIMEOFFSET
  257. help
  258. Support for the Cortina Systems Gemini family SoCs
  259. config ARCH_EBSA110
  260. bool "EBSA-110"
  261. select CPU_SA110
  262. select ISA
  263. select NO_IOPORT
  264. select ARCH_USES_GETTIMEOFFSET
  265. help
  266. This is an evaluation board for the StrongARM processor available
  267. from Digital. It has limited hardware on-board, including an
  268. Ethernet interface, two PCMCIA sockets, two serial ports and a
  269. parallel port.
  270. config ARCH_EP93XX
  271. bool "EP93xx-based"
  272. select CPU_ARM920T
  273. select ARM_AMBA
  274. select ARM_VIC
  275. select COMMON_CLKDEV
  276. select ARCH_REQUIRE_GPIOLIB
  277. select ARCH_HAS_HOLES_MEMORYMODEL
  278. select ARCH_USES_GETTIMEOFFSET
  279. help
  280. This enables support for the Cirrus EP93xx series of CPUs.
  281. config ARCH_FOOTBRIDGE
  282. bool "FootBridge"
  283. select CPU_SA110
  284. select FOOTBRIDGE
  285. select ARCH_USES_GETTIMEOFFSET
  286. help
  287. Support for systems based on the DC21285 companion chip
  288. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  289. config ARCH_MXC
  290. bool "Freescale MXC/iMX-based"
  291. select GENERIC_CLOCKEVENTS
  292. select ARCH_REQUIRE_GPIOLIB
  293. select COMMON_CLKDEV
  294. help
  295. Support for Freescale MXC/iMX-based family of processors
  296. config ARCH_STMP3XXX
  297. bool "Freescale STMP3xxx"
  298. select CPU_ARM926T
  299. select COMMON_CLKDEV
  300. select ARCH_REQUIRE_GPIOLIB
  301. select GENERIC_CLOCKEVENTS
  302. select USB_ARCH_HAS_EHCI
  303. help
  304. Support for systems based on the Freescale 3xxx CPUs.
  305. config ARCH_NETX
  306. bool "Hilscher NetX based"
  307. select CPU_ARM926T
  308. select ARM_VIC
  309. select GENERIC_CLOCKEVENTS
  310. help
  311. This enables support for systems based on the Hilscher NetX Soc
  312. config ARCH_H720X
  313. bool "Hynix HMS720x-based"
  314. select CPU_ARM720T
  315. select ISA_DMA_API
  316. select ARCH_USES_GETTIMEOFFSET
  317. help
  318. This enables support for systems based on the Hynix HMS720x
  319. config ARCH_IOP13XX
  320. bool "IOP13xx-based"
  321. depends on MMU
  322. select CPU_XSC3
  323. select PLAT_IOP
  324. select PCI
  325. select ARCH_SUPPORTS_MSI
  326. select VMSPLIT_1G
  327. help
  328. Support for Intel's IOP13XX (XScale) family of processors.
  329. config ARCH_IOP32X
  330. bool "IOP32x-based"
  331. depends on MMU
  332. select CPU_XSCALE
  333. select PLAT_IOP
  334. select PCI
  335. select ARCH_REQUIRE_GPIOLIB
  336. help
  337. Support for Intel's 80219 and IOP32X (XScale) family of
  338. processors.
  339. config ARCH_IOP33X
  340. bool "IOP33x-based"
  341. depends on MMU
  342. select CPU_XSCALE
  343. select PLAT_IOP
  344. select PCI
  345. select ARCH_REQUIRE_GPIOLIB
  346. help
  347. Support for Intel's IOP33X (XScale) family of processors.
  348. config ARCH_IXP23XX
  349. bool "IXP23XX-based"
  350. depends on MMU
  351. select CPU_XSC3
  352. select PCI
  353. select ARCH_USES_GETTIMEOFFSET
  354. help
  355. Support for Intel's IXP23xx (XScale) family of processors.
  356. config ARCH_IXP2000
  357. bool "IXP2400/2800-based"
  358. depends on MMU
  359. select CPU_XSCALE
  360. select PCI
  361. select ARCH_USES_GETTIMEOFFSET
  362. help
  363. Support for Intel's IXP2400/2800 (XScale) family of processors.
  364. config ARCH_IXP4XX
  365. bool "IXP4xx-based"
  366. depends on MMU
  367. select CPU_XSCALE
  368. select GENERIC_GPIO
  369. select GENERIC_CLOCKEVENTS
  370. select DMABOUNCE if PCI
  371. help
  372. Support for Intel's IXP4XX (XScale) family of processors.
  373. config ARCH_DOVE
  374. bool "Marvell Dove"
  375. select PCI
  376. select ARCH_REQUIRE_GPIOLIB
  377. select GENERIC_CLOCKEVENTS
  378. select PLAT_ORION
  379. help
  380. Support for the Marvell Dove SoC 88AP510
  381. config ARCH_KIRKWOOD
  382. bool "Marvell Kirkwood"
  383. select CPU_FEROCEON
  384. select PCI
  385. select ARCH_REQUIRE_GPIOLIB
  386. select GENERIC_CLOCKEVENTS
  387. select PLAT_ORION
  388. help
  389. Support for the following Marvell Kirkwood series SoCs:
  390. 88F6180, 88F6192 and 88F6281.
  391. config ARCH_LOKI
  392. bool "Marvell Loki (88RC8480)"
  393. select CPU_FEROCEON
  394. select GENERIC_CLOCKEVENTS
  395. select PLAT_ORION
  396. help
  397. Support for the Marvell Loki (88RC8480) SoC.
  398. config ARCH_LPC32XX
  399. bool "NXP LPC32XX"
  400. select CPU_ARM926T
  401. select ARCH_REQUIRE_GPIOLIB
  402. select HAVE_IDE
  403. select ARM_AMBA
  404. select USB_ARCH_HAS_OHCI
  405. select COMMON_CLKDEV
  406. select GENERIC_TIME
  407. select GENERIC_CLOCKEVENTS
  408. help
  409. Support for the NXP LPC32XX family of processors
  410. config ARCH_MV78XX0
  411. bool "Marvell MV78xx0"
  412. select CPU_FEROCEON
  413. select PCI
  414. select ARCH_REQUIRE_GPIOLIB
  415. select GENERIC_CLOCKEVENTS
  416. select PLAT_ORION
  417. help
  418. Support for the following Marvell MV78xx0 series SoCs:
  419. MV781x0, MV782x0.
  420. config ARCH_ORION5X
  421. bool "Marvell Orion"
  422. depends on MMU
  423. select CPU_FEROCEON
  424. select PCI
  425. select ARCH_REQUIRE_GPIOLIB
  426. select GENERIC_CLOCKEVENTS
  427. select PLAT_ORION
  428. help
  429. Support for the following Marvell Orion 5x series SoCs:
  430. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  431. Orion-2 (5281), Orion-1-90 (6183).
  432. config ARCH_MMP
  433. bool "Marvell PXA168/910/MMP2"
  434. depends on MMU
  435. select ARCH_REQUIRE_GPIOLIB
  436. select COMMON_CLKDEV
  437. select GENERIC_CLOCKEVENTS
  438. select TICK_ONESHOT
  439. select PLAT_PXA
  440. help
  441. Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
  442. config ARCH_KS8695
  443. bool "Micrel/Kendin KS8695"
  444. select CPU_ARM922T
  445. select ARCH_REQUIRE_GPIOLIB
  446. select ARCH_USES_GETTIMEOFFSET
  447. help
  448. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  449. System-on-Chip devices.
  450. config ARCH_NS9XXX
  451. bool "NetSilicon NS9xxx"
  452. select CPU_ARM926T
  453. select GENERIC_GPIO
  454. select GENERIC_CLOCKEVENTS
  455. select HAVE_CLK
  456. help
  457. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  458. System.
  459. <http://www.digi.com/products/microprocessors/index.jsp>
  460. config ARCH_W90X900
  461. bool "Nuvoton W90X900 CPU"
  462. select CPU_ARM926T
  463. select ARCH_REQUIRE_GPIOLIB
  464. select COMMON_CLKDEV
  465. select GENERIC_CLOCKEVENTS
  466. help
  467. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  468. At present, the w90x900 has been renamed nuc900, regarding
  469. the ARM series product line, you can login the following
  470. link address to know more.
  471. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  472. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  473. config ARCH_NUC93X
  474. bool "Nuvoton NUC93X CPU"
  475. select CPU_ARM926T
  476. select COMMON_CLKDEV
  477. help
  478. Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
  479. low-power and high performance MPEG-4/JPEG multimedia controller chip.
  480. config ARCH_TEGRA
  481. bool "NVIDIA Tegra"
  482. select GENERIC_TIME
  483. select GENERIC_CLOCKEVENTS
  484. select GENERIC_GPIO
  485. select HAVE_CLK
  486. select COMMON_CLKDEV
  487. select ARCH_HAS_BARRIERS if CACHE_L2X0
  488. help
  489. This enables support for NVIDIA Tegra based systems (Tegra APX,
  490. Tegra 6xx and Tegra 2 series).
  491. config ARCH_PNX4008
  492. bool "Philips Nexperia PNX4008 Mobile"
  493. select CPU_ARM926T
  494. select COMMON_CLKDEV
  495. select ARCH_USES_GETTIMEOFFSET
  496. help
  497. This enables support for Philips PNX4008 mobile platform.
  498. config ARCH_PXA
  499. bool "PXA2xx/PXA3xx-based"
  500. depends on MMU
  501. select ARCH_MTD_XIP
  502. select ARCH_HAS_CPUFREQ
  503. select COMMON_CLKDEV
  504. select ARCH_REQUIRE_GPIOLIB
  505. select GENERIC_CLOCKEVENTS
  506. select TICK_ONESHOT
  507. select PLAT_PXA
  508. help
  509. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  510. config ARCH_MSM
  511. bool "Qualcomm MSM"
  512. select HAVE_CLK
  513. select GENERIC_CLOCKEVENTS
  514. select ARCH_REQUIRE_GPIOLIB
  515. help
  516. Support for Qualcomm MSM/QSD based systems. This runs on the
  517. apps processor of the MSM/QSD and depends on a shared memory
  518. interface to the modem processor which runs the baseband
  519. stack and controls some vital subsystems
  520. (clock and power control, etc).
  521. config ARCH_SHMOBILE
  522. bool "Renesas SH-Mobile"
  523. help
  524. Support for Renesas's SH-Mobile ARM platforms
  525. config ARCH_RPC
  526. bool "RiscPC"
  527. select ARCH_ACORN
  528. select FIQ
  529. select TIMER_ACORN
  530. select ARCH_MAY_HAVE_PC_FDC
  531. select HAVE_PATA_PLATFORM
  532. select ISA_DMA_API
  533. select NO_IOPORT
  534. select ARCH_SPARSEMEM_ENABLE
  535. select ARCH_USES_GETTIMEOFFSET
  536. help
  537. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  538. CD-ROM interface, serial and parallel port, and the floppy drive.
  539. config ARCH_SA1100
  540. bool "SA1100-based"
  541. select CPU_SA1100
  542. select ISA
  543. select ARCH_SPARSEMEM_ENABLE
  544. select ARCH_MTD_XIP
  545. select ARCH_HAS_CPUFREQ
  546. select CPU_FREQ
  547. select GENERIC_CLOCKEVENTS
  548. select HAVE_CLK
  549. select TICK_ONESHOT
  550. select ARCH_REQUIRE_GPIOLIB
  551. help
  552. Support for StrongARM 11x0 based boards.
  553. config ARCH_S3C2410
  554. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
  555. select GENERIC_GPIO
  556. select ARCH_HAS_CPUFREQ
  557. select HAVE_CLK
  558. select ARCH_USES_GETTIMEOFFSET
  559. select HAVE_S3C2410_I2C
  560. help
  561. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  562. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  563. the Samsung SMDK2410 development board (and derivatives).
  564. Note, the S3C2416 and the S3C2450 are so close that they even share
  565. the same SoC ID code. This means that there is no seperate machine
  566. directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
  567. config ARCH_S3C64XX
  568. bool "Samsung S3C64XX"
  569. select PLAT_SAMSUNG
  570. select CPU_V6
  571. select ARM_VIC
  572. select HAVE_CLK
  573. select NO_IOPORT
  574. select ARCH_USES_GETTIMEOFFSET
  575. select ARCH_HAS_CPUFREQ
  576. select ARCH_REQUIRE_GPIOLIB
  577. select SAMSUNG_CLKSRC
  578. select SAMSUNG_IRQ_VIC_TIMER
  579. select SAMSUNG_IRQ_UART
  580. select S3C_GPIO_TRACK
  581. select S3C_GPIO_PULL_UPDOWN
  582. select S3C_GPIO_CFG_S3C24XX
  583. select S3C_GPIO_CFG_S3C64XX
  584. select S3C_DEV_NAND
  585. select USB_ARCH_HAS_OHCI
  586. select SAMSUNG_GPIOLIB_4BIT
  587. select HAVE_S3C2410_I2C
  588. select HAVE_S3C2410_WATCHDOG
  589. help
  590. Samsung S3C64XX series based systems
  591. config ARCH_S5P6440
  592. bool "Samsung S5P6440"
  593. select CPU_V6
  594. select GENERIC_GPIO
  595. select HAVE_CLK
  596. select HAVE_S3C2410_WATCHDOG
  597. select ARCH_USES_GETTIMEOFFSET
  598. select HAVE_S3C2410_I2C
  599. select HAVE_S3C_RTC
  600. help
  601. Samsung S5P6440 CPU based systems
  602. config ARCH_S5P6442
  603. bool "Samsung S5P6442"
  604. select CPU_V6
  605. select GENERIC_GPIO
  606. select HAVE_CLK
  607. select ARCH_USES_GETTIMEOFFSET
  608. select HAVE_S3C2410_WATCHDOG
  609. help
  610. Samsung S5P6442 CPU based systems
  611. config ARCH_S5PC100
  612. bool "Samsung S5PC100"
  613. select GENERIC_GPIO
  614. select HAVE_CLK
  615. select CPU_V7
  616. select ARM_L1_CACHE_SHIFT_6
  617. select ARCH_USES_GETTIMEOFFSET
  618. select HAVE_S3C2410_I2C
  619. select HAVE_S3C_RTC
  620. select HAVE_S3C2410_WATCHDOG
  621. help
  622. Samsung S5PC100 series based systems
  623. config ARCH_S5PV210
  624. bool "Samsung S5PV210/S5PC110"
  625. select CPU_V7
  626. select GENERIC_GPIO
  627. select HAVE_CLK
  628. select ARM_L1_CACHE_SHIFT_6
  629. select ARCH_USES_GETTIMEOFFSET
  630. select HAVE_S3C2410_I2C
  631. select HAVE_S3C_RTC
  632. select HAVE_S3C2410_WATCHDOG
  633. help
  634. Samsung S5PV210/S5PC110 series based systems
  635. config ARCH_S5PV310
  636. bool "Samsung S5PV310/S5PC210"
  637. select CPU_V7
  638. select GENERIC_GPIO
  639. select HAVE_CLK
  640. select GENERIC_CLOCKEVENTS
  641. help
  642. Samsung S5PV310 series based systems
  643. config ARCH_SHARK
  644. bool "Shark"
  645. select CPU_SA110
  646. select ISA
  647. select ISA_DMA
  648. select ZONE_DMA
  649. select PCI
  650. select ARCH_USES_GETTIMEOFFSET
  651. help
  652. Support for the StrongARM based Digital DNARD machine, also known
  653. as "Shark" (<http://www.shark-linux.de/shark.html>).
  654. config ARCH_LH7A40X
  655. bool "Sharp LH7A40X"
  656. select CPU_ARM922T
  657. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  658. select ARCH_USES_GETTIMEOFFSET
  659. help
  660. Say Y here for systems based on one of the Sharp LH7A40X
  661. System on a Chip processors. These CPUs include an ARM922T
  662. core with a wide array of integrated devices for
  663. hand-held and low-power applications.
  664. config ARCH_U300
  665. bool "ST-Ericsson U300 Series"
  666. depends on MMU
  667. select CPU_ARM926T
  668. select HAVE_TCM
  669. select ARM_AMBA
  670. select ARM_VIC
  671. select GENERIC_CLOCKEVENTS
  672. select COMMON_CLKDEV
  673. select GENERIC_GPIO
  674. help
  675. Support for ST-Ericsson U300 series mobile platforms.
  676. config ARCH_U8500
  677. bool "ST-Ericsson U8500 Series"
  678. select CPU_V7
  679. select ARM_AMBA
  680. select GENERIC_CLOCKEVENTS
  681. select COMMON_CLKDEV
  682. select ARCH_REQUIRE_GPIOLIB
  683. help
  684. Support for ST-Ericsson's Ux500 architecture
  685. config ARCH_NOMADIK
  686. bool "STMicroelectronics Nomadik"
  687. select ARM_AMBA
  688. select ARM_VIC
  689. select CPU_ARM926T
  690. select COMMON_CLKDEV
  691. select GENERIC_CLOCKEVENTS
  692. select ARCH_REQUIRE_GPIOLIB
  693. help
  694. Support for the Nomadik platform by ST-Ericsson
  695. config ARCH_DAVINCI
  696. bool "TI DaVinci"
  697. select GENERIC_CLOCKEVENTS
  698. select ARCH_REQUIRE_GPIOLIB
  699. select ZONE_DMA
  700. select HAVE_IDE
  701. select COMMON_CLKDEV
  702. select GENERIC_ALLOCATOR
  703. select ARCH_HAS_HOLES_MEMORYMODEL
  704. help
  705. Support for TI's DaVinci platform.
  706. config ARCH_OMAP
  707. bool "TI OMAP"
  708. select HAVE_CLK
  709. select ARCH_REQUIRE_GPIOLIB
  710. select ARCH_HAS_CPUFREQ
  711. select GENERIC_CLOCKEVENTS
  712. select ARCH_HAS_HOLES_MEMORYMODEL
  713. help
  714. Support for TI's OMAP platform (OMAP1 and OMAP2).
  715. config PLAT_SPEAR
  716. bool "ST SPEAr"
  717. select ARM_AMBA
  718. select ARCH_REQUIRE_GPIOLIB
  719. select COMMON_CLKDEV
  720. select GENERIC_CLOCKEVENTS
  721. select HAVE_CLK
  722. help
  723. Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
  724. endchoice
  725. #
  726. # This is sorted alphabetically by mach-* pathname. However, plat-*
  727. # Kconfigs may be included either alphabetically (according to the
  728. # plat- suffix) or along side the corresponding mach-* source.
  729. #
  730. source "arch/arm/mach-aaec2000/Kconfig"
  731. source "arch/arm/mach-at91/Kconfig"
  732. source "arch/arm/mach-bcmring/Kconfig"
  733. source "arch/arm/mach-clps711x/Kconfig"
  734. source "arch/arm/mach-cns3xxx/Kconfig"
  735. source "arch/arm/mach-davinci/Kconfig"
  736. source "arch/arm/mach-dove/Kconfig"
  737. source "arch/arm/mach-ep93xx/Kconfig"
  738. source "arch/arm/mach-footbridge/Kconfig"
  739. source "arch/arm/mach-gemini/Kconfig"
  740. source "arch/arm/mach-h720x/Kconfig"
  741. source "arch/arm/mach-integrator/Kconfig"
  742. source "arch/arm/mach-iop32x/Kconfig"
  743. source "arch/arm/mach-iop33x/Kconfig"
  744. source "arch/arm/mach-iop13xx/Kconfig"
  745. source "arch/arm/mach-ixp4xx/Kconfig"
  746. source "arch/arm/mach-ixp2000/Kconfig"
  747. source "arch/arm/mach-ixp23xx/Kconfig"
  748. source "arch/arm/mach-kirkwood/Kconfig"
  749. source "arch/arm/mach-ks8695/Kconfig"
  750. source "arch/arm/mach-lh7a40x/Kconfig"
  751. source "arch/arm/mach-loki/Kconfig"
  752. source "arch/arm/mach-lpc32xx/Kconfig"
  753. source "arch/arm/mach-msm/Kconfig"
  754. source "arch/arm/mach-mv78xx0/Kconfig"
  755. source "arch/arm/plat-mxc/Kconfig"
  756. source "arch/arm/mach-netx/Kconfig"
  757. source "arch/arm/mach-nomadik/Kconfig"
  758. source "arch/arm/plat-nomadik/Kconfig"
  759. source "arch/arm/mach-ns9xxx/Kconfig"
  760. source "arch/arm/mach-nuc93x/Kconfig"
  761. source "arch/arm/plat-omap/Kconfig"
  762. source "arch/arm/mach-omap1/Kconfig"
  763. source "arch/arm/mach-omap2/Kconfig"
  764. source "arch/arm/mach-orion5x/Kconfig"
  765. source "arch/arm/mach-pxa/Kconfig"
  766. source "arch/arm/plat-pxa/Kconfig"
  767. source "arch/arm/mach-mmp/Kconfig"
  768. source "arch/arm/mach-realview/Kconfig"
  769. source "arch/arm/mach-sa1100/Kconfig"
  770. source "arch/arm/plat-samsung/Kconfig"
  771. source "arch/arm/plat-s3c24xx/Kconfig"
  772. source "arch/arm/plat-s5p/Kconfig"
  773. source "arch/arm/plat-spear/Kconfig"
  774. if ARCH_S3C2410
  775. source "arch/arm/mach-s3c2400/Kconfig"
  776. source "arch/arm/mach-s3c2410/Kconfig"
  777. source "arch/arm/mach-s3c2412/Kconfig"
  778. source "arch/arm/mach-s3c2416/Kconfig"
  779. source "arch/arm/mach-s3c2440/Kconfig"
  780. source "arch/arm/mach-s3c2443/Kconfig"
  781. endif
  782. if ARCH_S3C64XX
  783. source "arch/arm/mach-s3c64xx/Kconfig"
  784. endif
  785. source "arch/arm/mach-s5p6440/Kconfig"
  786. source "arch/arm/mach-s5p6442/Kconfig"
  787. source "arch/arm/mach-s5pc100/Kconfig"
  788. source "arch/arm/mach-s5pv210/Kconfig"
  789. source "arch/arm/mach-s5pv310/Kconfig"
  790. source "arch/arm/mach-shmobile/Kconfig"
  791. source "arch/arm/plat-stmp3xxx/Kconfig"
  792. source "arch/arm/mach-tegra/Kconfig"
  793. source "arch/arm/mach-u300/Kconfig"
  794. source "arch/arm/mach-ux500/Kconfig"
  795. source "arch/arm/mach-versatile/Kconfig"
  796. source "arch/arm/mach-vexpress/Kconfig"
  797. source "arch/arm/mach-w90x900/Kconfig"
  798. # Definitions to make life easier
  799. config ARCH_ACORN
  800. bool
  801. config PLAT_IOP
  802. bool
  803. select GENERIC_CLOCKEVENTS
  804. config PLAT_ORION
  805. bool
  806. config PLAT_PXA
  807. bool
  808. config PLAT_VERSATILE
  809. bool
  810. config ARM_TIMER_SP804
  811. bool
  812. source arch/arm/mm/Kconfig
  813. config IWMMXT
  814. bool "Enable iWMMXt support"
  815. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
  816. default y if PXA27x || PXA3xx || ARCH_MMP
  817. help
  818. Enable support for iWMMXt context switching at run time if
  819. running on a CPU that supports it.
  820. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  821. config XSCALE_PMU
  822. bool
  823. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  824. default y
  825. config CPU_HAS_PMU
  826. depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
  827. (!ARCH_OMAP3 || OMAP3_EMU)
  828. default y
  829. bool
  830. if !MMU
  831. source "arch/arm/Kconfig-nommu"
  832. endif
  833. config ARM_ERRATA_411920
  834. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  835. depends on CPU_V6 && !SMP
  836. help
  837. Invalidation of the Instruction Cache operation can
  838. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  839. It does not affect the MPCore. This option enables the ARM Ltd.
  840. recommended workaround.
  841. config ARM_ERRATA_430973
  842. bool "ARM errata: Stale prediction on replaced interworking branch"
  843. depends on CPU_V7
  844. help
  845. This option enables the workaround for the 430973 Cortex-A8
  846. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  847. interworking branch is replaced with another code sequence at the
  848. same virtual address, whether due to self-modifying code or virtual
  849. to physical address re-mapping, Cortex-A8 does not recover from the
  850. stale interworking branch prediction. This results in Cortex-A8
  851. executing the new code sequence in the incorrect ARM or Thumb state.
  852. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  853. and also flushes the branch target cache at every context switch.
  854. Note that setting specific bits in the ACTLR register may not be
  855. available in non-secure mode.
  856. config ARM_ERRATA_458693
  857. bool "ARM errata: Processor deadlock when a false hazard is created"
  858. depends on CPU_V7
  859. help
  860. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  861. erratum. For very specific sequences of memory operations, it is
  862. possible for a hazard condition intended for a cache line to instead
  863. be incorrectly associated with a different cache line. This false
  864. hazard might then cause a processor deadlock. The workaround enables
  865. the L1 caching of the NEON accesses and disables the PLD instruction
  866. in the ACTLR register. Note that setting specific bits in the ACTLR
  867. register may not be available in non-secure mode.
  868. config ARM_ERRATA_460075
  869. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  870. depends on CPU_V7
  871. help
  872. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  873. erratum. Any asynchronous access to the L2 cache may encounter a
  874. situation in which recent store transactions to the L2 cache are lost
  875. and overwritten with stale memory contents from external memory. The
  876. workaround disables the write-allocate mode for the L2 cache via the
  877. ACTLR register. Note that setting specific bits in the ACTLR register
  878. may not be available in non-secure mode.
  879. config PL310_ERRATA_588369
  880. bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
  881. depends on CACHE_L2X0 && ARCH_OMAP4
  882. help
  883. The PL310 L2 cache controller implements three types of Clean &
  884. Invalidate maintenance operations: by Physical Address
  885. (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
  886. They are architecturally defined to behave as the execution of a
  887. clean operation followed immediately by an invalidate operation,
  888. both performing to the same memory location. This functionality
  889. is not correctly implemented in PL310 as clean lines are not
  890. invalidated as a result of these operations. Note that this errata
  891. uses Texas Instrument's secure monitor api.
  892. config ARM_ERRATA_720789
  893. bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
  894. depends on CPU_V7 && SMP
  895. help
  896. This option enables the workaround for the 720789 Cortex-A9 (prior to
  897. r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
  898. broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
  899. As a consequence of this erratum, some TLB entries which should be
  900. invalidated are not, resulting in an incoherency in the system page
  901. tables. The workaround changes the TLB flushing routines to invalidate
  902. entries regardless of the ASID.
  903. endmenu
  904. source "arch/arm/common/Kconfig"
  905. menu "Bus support"
  906. config ARM_AMBA
  907. bool
  908. config ISA
  909. bool
  910. help
  911. Find out whether you have ISA slots on your motherboard. ISA is the
  912. name of a bus system, i.e. the way the CPU talks to the other stuff
  913. inside your box. Other bus systems are PCI, EISA, MicroChannel
  914. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  915. newer boards don't support it. If you have ISA, say Y, otherwise N.
  916. # Select ISA DMA controller support
  917. config ISA_DMA
  918. bool
  919. select ISA_DMA_API
  920. # Select ISA DMA interface
  921. config ISA_DMA_API
  922. bool
  923. config PCI
  924. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX
  925. help
  926. Find out whether you have a PCI motherboard. PCI is the name of a
  927. bus system, i.e. the way the CPU talks to the other stuff inside
  928. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  929. VESA. If you have PCI, say Y, otherwise N.
  930. config PCI_DOMAINS
  931. bool
  932. depends on PCI
  933. config PCI_SYSCALL
  934. def_bool PCI
  935. # Select the host bridge type
  936. config PCI_HOST_VIA82C505
  937. bool
  938. depends on PCI && ARCH_SHARK
  939. default y
  940. config PCI_HOST_ITE8152
  941. bool
  942. depends on PCI && MACH_ARMCORE
  943. default y
  944. select DMABOUNCE
  945. source "drivers/pci/Kconfig"
  946. source "drivers/pcmcia/Kconfig"
  947. endmenu
  948. menu "Kernel Features"
  949. source "kernel/time/Kconfig"
  950. config SMP
  951. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  952. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
  953. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
  954. ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
  955. depends on GENERIC_CLOCKEVENTS
  956. select USE_GENERIC_SMP_HELPERS
  957. select HAVE_ARM_SCU if ARCH_REALVIEW || ARCH_OMAP4 || ARCH_S5PV310 ||\
  958. ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4
  959. help
  960. This enables support for systems with more than one CPU. If you have
  961. a system with only one CPU, like most personal computers, say N. If
  962. you have a system with more than one CPU, say Y.
  963. If you say N here, the kernel will run on single and multiprocessor
  964. machines, but will use only one CPU of a multiprocessor machine. If
  965. you say Y here, the kernel will run on many, but not all, single
  966. processor machines. On a single processor machine, the kernel will
  967. run faster if you say N here.
  968. See also <file:Documentation/i386/IO-APIC.txt>,
  969. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  970. <http://www.linuxdoc.org/docs.html#howto>.
  971. If you don't know what to do here, say N.
  972. config HAVE_ARM_SCU
  973. bool
  974. depends on SMP
  975. help
  976. This option enables support for the ARM system coherency unit
  977. config HAVE_ARM_TWD
  978. bool
  979. depends on SMP
  980. help
  981. This options enables support for the ARM timer and watchdog unit
  982. choice
  983. prompt "Memory split"
  984. default VMSPLIT_3G
  985. help
  986. Select the desired split between kernel and user memory.
  987. If you are not absolutely sure what you are doing, leave this
  988. option alone!
  989. config VMSPLIT_3G
  990. bool "3G/1G user/kernel split"
  991. config VMSPLIT_2G
  992. bool "2G/2G user/kernel split"
  993. config VMSPLIT_1G
  994. bool "1G/3G user/kernel split"
  995. endchoice
  996. config PAGE_OFFSET
  997. hex
  998. default 0x40000000 if VMSPLIT_1G
  999. default 0x80000000 if VMSPLIT_2G
  1000. default 0xC0000000
  1001. config NR_CPUS
  1002. int "Maximum number of CPUs (2-32)"
  1003. range 2 32
  1004. depends on SMP
  1005. default "4"
  1006. config HOTPLUG_CPU
  1007. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  1008. depends on SMP && HOTPLUG && EXPERIMENTAL
  1009. help
  1010. Say Y here to experiment with turning CPUs off and on. CPUs
  1011. can be controlled through /sys/devices/system/cpu.
  1012. config LOCAL_TIMERS
  1013. bool "Use local timer interrupts"
  1014. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
  1015. REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
  1016. ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
  1017. default y
  1018. select HAVE_ARM_TWD if ARCH_REALVIEW || ARCH_OMAP4 || ARCH_S5PV310 || \
  1019. ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS
  1020. help
  1021. Enable support for local timers on SMP platforms, rather then the
  1022. legacy IPI broadcast method. Local timers allows the system
  1023. accounting to be spread across the timer interval, preventing a
  1024. "thundering herd" at every timer tick.
  1025. source kernel/Kconfig.preempt
  1026. config HZ
  1027. int
  1028. default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || \
  1029. ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
  1030. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  1031. default AT91_TIMER_HZ if ARCH_AT91
  1032. default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
  1033. default 100
  1034. config THUMB2_KERNEL
  1035. bool "Compile the kernel in Thumb-2 mode"
  1036. depends on CPU_V7 && EXPERIMENTAL
  1037. select AEABI
  1038. select ARM_ASM_UNIFIED
  1039. help
  1040. By enabling this option, the kernel will be compiled in
  1041. Thumb-2 mode. A compiler/assembler that understand the unified
  1042. ARM-Thumb syntax is needed.
  1043. If unsure, say N.
  1044. config ARM_ASM_UNIFIED
  1045. bool
  1046. config AEABI
  1047. bool "Use the ARM EABI to compile the kernel"
  1048. help
  1049. This option allows for the kernel to be compiled using the latest
  1050. ARM ABI (aka EABI). This is only useful if you are using a user
  1051. space environment that is also compiled with EABI.
  1052. Since there are major incompatibilities between the legacy ABI and
  1053. EABI, especially with regard to structure member alignment, this
  1054. option also changes the kernel syscall calling convention to
  1055. disambiguate both ABIs and allow for backward compatibility support
  1056. (selected with CONFIG_OABI_COMPAT).
  1057. To use this you need GCC version 4.0.0 or later.
  1058. config OABI_COMPAT
  1059. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  1060. depends on AEABI && EXPERIMENTAL
  1061. default y
  1062. help
  1063. This option preserves the old syscall interface along with the
  1064. new (ARM EABI) one. It also provides a compatibility layer to
  1065. intercept syscalls that have structure arguments which layout
  1066. in memory differs between the legacy ABI and the new ARM EABI
  1067. (only for non "thumb" binaries). This option adds a tiny
  1068. overhead to all syscalls and produces a slightly larger kernel.
  1069. If you know you'll be using only pure EABI user space then you
  1070. can say N here. If this option is not selected and you attempt
  1071. to execute a legacy ABI binary then the result will be
  1072. UNPREDICTABLE (in fact it can be predicted that it won't work
  1073. at all). If in doubt say Y.
  1074. config ARCH_HAS_HOLES_MEMORYMODEL
  1075. bool
  1076. config ARCH_SPARSEMEM_ENABLE
  1077. bool
  1078. config ARCH_SPARSEMEM_DEFAULT
  1079. def_bool ARCH_SPARSEMEM_ENABLE
  1080. config ARCH_SELECT_MEMORY_MODEL
  1081. def_bool ARCH_SPARSEMEM_ENABLE
  1082. config HIGHMEM
  1083. bool "High Memory Support (EXPERIMENTAL)"
  1084. depends on MMU && EXPERIMENTAL
  1085. help
  1086. The address space of ARM processors is only 4 Gigabytes large
  1087. and it has to accommodate user address space, kernel address
  1088. space as well as some memory mapped IO. That means that, if you
  1089. have a large amount of physical memory and/or IO, not all of the
  1090. memory can be "permanently mapped" by the kernel. The physical
  1091. memory that is not permanently mapped is called "high memory".
  1092. Depending on the selected kernel/user memory split, minimum
  1093. vmalloc space and actual amount of RAM, you may not need this
  1094. option which should result in a slightly faster kernel.
  1095. If unsure, say n.
  1096. config HIGHPTE
  1097. bool "Allocate 2nd-level pagetables from highmem"
  1098. depends on HIGHMEM
  1099. depends on !OUTER_CACHE
  1100. config HW_PERF_EVENTS
  1101. bool "Enable hardware performance counter support for perf events"
  1102. depends on PERF_EVENTS && CPU_HAS_PMU
  1103. default y
  1104. help
  1105. Enable hardware performance counter support for perf events. If
  1106. disabled, perf events will use software events only.
  1107. config SPARSE_IRQ
  1108. def_bool n
  1109. help
  1110. This enables support for sparse irqs. This is useful in general
  1111. as most CPUs have a fairly sparse array of IRQ vectors, which
  1112. the irq_desc then maps directly on to. Systems with a high
  1113. number of off-chip IRQs will want to treat this as
  1114. experimental until they have been independently verified.
  1115. source "mm/Kconfig"
  1116. config FORCE_MAX_ZONEORDER
  1117. int "Maximum zone order" if ARCH_SHMOBILE
  1118. range 11 64 if ARCH_SHMOBILE
  1119. default "9" if SA1111
  1120. default "11"
  1121. help
  1122. The kernel memory allocator divides physically contiguous memory
  1123. blocks into "zones", where each zone is a power of two number of
  1124. pages. This option selects the largest power of two that the kernel
  1125. keeps in the memory allocator. If you need to allocate very large
  1126. blocks of physically contiguous memory, then you may need to
  1127. increase this value.
  1128. This config option is actually maximum order plus one. For example,
  1129. a value of 11 means that the largest free memory block is 2^10 pages.
  1130. config LEDS
  1131. bool "Timer and CPU usage LEDs"
  1132. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  1133. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  1134. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  1135. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  1136. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  1137. ARCH_AT91 || ARCH_DAVINCI || \
  1138. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  1139. help
  1140. If you say Y here, the LEDs on your machine will be used
  1141. to provide useful information about your current system status.
  1142. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  1143. be able to select which LEDs are active using the options below. If
  1144. you are compiling a kernel for the EBSA-110 or the LART however, the
  1145. red LED will simply flash regularly to indicate that the system is
  1146. still functional. It is safe to say Y here if you have a CATS
  1147. system, but the driver will do nothing.
  1148. config LEDS_TIMER
  1149. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  1150. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1151. || MACH_OMAP_PERSEUS2
  1152. depends on LEDS
  1153. depends on !GENERIC_CLOCKEVENTS
  1154. default y if ARCH_EBSA110
  1155. help
  1156. If you say Y here, one of the system LEDs (the green one on the
  1157. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1158. will flash regularly to indicate that the system is still
  1159. operational. This is mainly useful to kernel hackers who are
  1160. debugging unstable kernels.
  1161. The LART uses the same LED for both Timer LED and CPU usage LED
  1162. functions. You may choose to use both, but the Timer LED function
  1163. will overrule the CPU usage LED.
  1164. config LEDS_CPU
  1165. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1166. !ARCH_OMAP) \
  1167. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1168. || MACH_OMAP_PERSEUS2
  1169. depends on LEDS
  1170. help
  1171. If you say Y here, the red LED will be used to give a good real
  1172. time indication of CPU usage, by lighting whenever the idle task
  1173. is not currently executing.
  1174. The LART uses the same LED for both Timer LED and CPU usage LED
  1175. functions. You may choose to use both, but the Timer LED function
  1176. will overrule the CPU usage LED.
  1177. config ALIGNMENT_TRAP
  1178. bool
  1179. depends on CPU_CP15_MMU
  1180. default y if !ARCH_EBSA110
  1181. select HAVE_PROC_CPU if PROC_FS
  1182. help
  1183. ARM processors cannot fetch/store information which is not
  1184. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1185. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1186. fetch/store instructions will be emulated in software if you say
  1187. here, which has a severe performance impact. This is necessary for
  1188. correct operation of some network protocols. With an IP-only
  1189. configuration it is safe to say N, otherwise say Y.
  1190. config UACCESS_WITH_MEMCPY
  1191. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1192. depends on MMU && EXPERIMENTAL
  1193. default y if CPU_FEROCEON
  1194. help
  1195. Implement faster copy_to_user and clear_user methods for CPU
  1196. cores where a 8-word STM instruction give significantly higher
  1197. memory write throughput than a sequence of individual 32bit stores.
  1198. A possible side effect is a slight increase in scheduling latency
  1199. between threads sharing the same address space if they invoke
  1200. such copy operations with large buffers.
  1201. However, if the CPU data cache is using a write-allocate mode,
  1202. this option is unlikely to provide any performance gain.
  1203. config CC_STACKPROTECTOR
  1204. bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
  1205. help
  1206. This option turns on the -fstack-protector GCC feature. This
  1207. feature puts, at the beginning of functions, a canary value on
  1208. the stack just before the return address, and validates
  1209. the value just before actually returning. Stack based buffer
  1210. overflows (that need to overwrite this return address) now also
  1211. overwrite the canary, which gets detected and the attack is then
  1212. neutralized via a kernel panic.
  1213. This feature requires gcc version 4.2 or above.
  1214. config DEPRECATED_PARAM_STRUCT
  1215. bool "Provide old way to pass kernel parameters"
  1216. help
  1217. This was deprecated in 2001 and announced to live on for 5 years.
  1218. Some old boot loaders still use this way.
  1219. endmenu
  1220. menu "Boot options"
  1221. # Compressed boot loader in ROM. Yes, we really want to ask about
  1222. # TEXT and BSS so we preserve their values in the config files.
  1223. config ZBOOT_ROM_TEXT
  1224. hex "Compressed ROM boot loader base address"
  1225. default "0"
  1226. help
  1227. The physical address at which the ROM-able zImage is to be
  1228. placed in the target. Platforms which normally make use of
  1229. ROM-able zImage formats normally set this to a suitable
  1230. value in their defconfig file.
  1231. If ZBOOT_ROM is not enabled, this has no effect.
  1232. config ZBOOT_ROM_BSS
  1233. hex "Compressed ROM boot loader BSS address"
  1234. default "0"
  1235. help
  1236. The base address of an area of read/write memory in the target
  1237. for the ROM-able zImage which must be available while the
  1238. decompressor is running. It must be large enough to hold the
  1239. entire decompressed kernel plus an additional 128 KiB.
  1240. Platforms which normally make use of ROM-able zImage formats
  1241. normally set this to a suitable value in their defconfig file.
  1242. If ZBOOT_ROM is not enabled, this has no effect.
  1243. config ZBOOT_ROM
  1244. bool "Compressed boot loader in ROM/flash"
  1245. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1246. help
  1247. Say Y here if you intend to execute your compressed kernel image
  1248. (zImage) directly from ROM or flash. If unsure, say N.
  1249. config CMDLINE
  1250. string "Default kernel command string"
  1251. default ""
  1252. help
  1253. On some architectures (EBSA110 and CATS), there is currently no way
  1254. for the boot loader to pass arguments to the kernel. For these
  1255. architectures, you should supply some command-line options at build
  1256. time by entering them here. As a minimum, you should specify the
  1257. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1258. config CMDLINE_FORCE
  1259. bool "Always use the default kernel command string"
  1260. depends on CMDLINE != ""
  1261. help
  1262. Always use the default kernel command string, even if the boot
  1263. loader passes other arguments to the kernel.
  1264. This is useful if you cannot or don't want to change the
  1265. command-line options your boot loader passes to the kernel.
  1266. If unsure, say N.
  1267. config XIP_KERNEL
  1268. bool "Kernel Execute-In-Place from ROM"
  1269. depends on !ZBOOT_ROM
  1270. help
  1271. Execute-In-Place allows the kernel to run from non-volatile storage
  1272. directly addressable by the CPU, such as NOR flash. This saves RAM
  1273. space since the text section of the kernel is not loaded from flash
  1274. to RAM. Read-write sections, such as the data section and stack,
  1275. are still copied to RAM. The XIP kernel is not compressed since
  1276. it has to run directly from flash, so it will take more space to
  1277. store it. The flash address used to link the kernel object files,
  1278. and for storing it, is configuration dependent. Therefore, if you
  1279. say Y here, you must know the proper physical address where to
  1280. store the kernel image depending on your own flash memory usage.
  1281. Also note that the make target becomes "make xipImage" rather than
  1282. "make zImage" or "make Image". The final kernel binary to put in
  1283. ROM memory will be arch/arm/boot/xipImage.
  1284. If unsure, say N.
  1285. config XIP_PHYS_ADDR
  1286. hex "XIP Kernel Physical Location"
  1287. depends on XIP_KERNEL
  1288. default "0x00080000"
  1289. help
  1290. This is the physical address in your flash memory the kernel will
  1291. be linked for and stored to. This address is dependent on your
  1292. own flash usage.
  1293. config KEXEC
  1294. bool "Kexec system call (EXPERIMENTAL)"
  1295. depends on EXPERIMENTAL
  1296. help
  1297. kexec is a system call that implements the ability to shutdown your
  1298. current kernel, and to start another kernel. It is like a reboot
  1299. but it is independent of the system firmware. And like a reboot
  1300. you can start any kernel with it, not just Linux.
  1301. It is an ongoing process to be certain the hardware in a machine
  1302. is properly shutdown, so do not be surprised if this code does not
  1303. initially work for you. It may help to enable device hotplugging
  1304. support.
  1305. config ATAGS_PROC
  1306. bool "Export atags in procfs"
  1307. depends on KEXEC
  1308. default y
  1309. help
  1310. Should the atags used to boot the kernel be exported in an "atags"
  1311. file in procfs. Useful with kexec.
  1312. config AUTO_ZRELADDR
  1313. bool "Auto calculation of the decompressed kernel image address"
  1314. depends on !ZBOOT_ROM && !ARCH_U300
  1315. help
  1316. ZRELADDR is the physical address where the decompressed kernel
  1317. image will be placed. If AUTO_ZRELADDR is selected, the address
  1318. will be determined at run-time by masking the current IP with
  1319. 0xf8000000. This assumes the zImage being placed in the first 128MB
  1320. from start of memory.
  1321. config ZRELADDR
  1322. hex "Physical address of the decompressed kernel image"
  1323. depends on !AUTO_ZRELADDR
  1324. default 0x00008000 if ARCH_BCMRING ||\
  1325. ARCH_CNS3XXX ||\
  1326. ARCH_DOVE ||\
  1327. ARCH_EBSA110 ||\
  1328. ARCH_FOOTBRIDGE ||\
  1329. ARCH_INTEGRATOR ||\
  1330. ARCH_IOP13XX ||\
  1331. ARCH_IOP33X ||\
  1332. ARCH_IXP2000 ||\
  1333. ARCH_IXP23XX ||\
  1334. ARCH_IXP4XX ||\
  1335. ARCH_KIRKWOOD ||\
  1336. ARCH_KS8695 ||\
  1337. ARCH_LOKI ||\
  1338. ARCH_MMP ||\
  1339. ARCH_MV78XX0 ||\
  1340. ARCH_NOMADIK ||\
  1341. ARCH_NUC93X ||\
  1342. ARCH_NS9XXX ||\
  1343. ARCH_ORION5X ||\
  1344. ARCH_SPEAR3XX ||\
  1345. ARCH_SPEAR6XX ||\
  1346. ARCH_U8500 ||\
  1347. ARCH_VERSATILE ||\
  1348. ARCH_W90X900
  1349. default 0x08008000 if ARCH_MX1 ||\
  1350. ARCH_SHARK
  1351. default 0x10008000 if ARCH_MSM ||\
  1352. ARCH_OMAP1 ||\
  1353. ARCH_RPC
  1354. default 0x20008000 if ARCH_S5P6440 ||\
  1355. ARCH_S5P6442 ||\
  1356. ARCH_S5PC100 ||\
  1357. ARCH_S5PV210
  1358. default 0x30008000 if ARCH_S3C2410 ||\
  1359. ARCH_S3C2400 ||\
  1360. ARCH_S3C2412 ||\
  1361. ARCH_S3C2416 ||\
  1362. ARCH_S3C2440 ||\
  1363. ARCH_S3C2443
  1364. default 0x40008000 if ARCH_STMP378X ||\
  1365. ARCH_STMP37XX ||\
  1366. ARCH_SH7372 ||\
  1367. ARCH_SH7377
  1368. default 0x50008000 if ARCH_S3C64XX ||\
  1369. ARCH_SH7367
  1370. default 0x60008000 if ARCH_VEXPRESS
  1371. default 0x80008000 if ARCH_MX25 ||\
  1372. ARCH_MX3 ||\
  1373. ARCH_NETX ||\
  1374. ARCH_OMAP2PLUS ||\
  1375. ARCH_PNX4008
  1376. default 0x90008000 if ARCH_MX5 ||\
  1377. ARCH_MX91231
  1378. default 0xa0008000 if ARCH_IOP32X ||\
  1379. ARCH_PXA ||\
  1380. MACH_MX27
  1381. default 0xc0008000 if ARCH_LH7A40X ||\
  1382. MACH_MX21
  1383. default 0xf0008000 if ARCH_AAEC2000 ||\
  1384. ARCH_L7200
  1385. default 0xc0028000 if ARCH_CLPS711X
  1386. default 0x70008000 if ARCH_AT91 && (ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
  1387. default 0x20008000 if ARCH_AT91 && !(ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
  1388. default 0xc0008000 if ARCH_DAVINCI && ARCH_DAVINCI_DA8XX
  1389. default 0x80008000 if ARCH_DAVINCI && !ARCH_DAVINCI_DA8XX
  1390. default 0x00008000 if ARCH_EP93XX && EP93XX_SDCE3_SYNC_PHYS_OFFSET
  1391. default 0xc0008000 if ARCH_EP93XX && EP93XX_SDCE0_PHYS_OFFSET
  1392. default 0xd0008000 if ARCH_EP93XX && EP93XX_SDCE1_PHYS_OFFSET
  1393. default 0xe0008000 if ARCH_EP93XX && EP93XX_SDCE2_PHYS_OFFSET
  1394. default 0xf0008000 if ARCH_EP93XX && EP93XX_SDCE3_ASYNC_PHYS_OFFSET
  1395. default 0x00008000 if ARCH_GEMINI && GEMINI_MEM_SWAP
  1396. default 0x10008000 if ARCH_GEMINI && !GEMINI_MEM_SWAP
  1397. default 0x70008000 if ARCH_REALVIEW && REALVIEW_HIGH_PHYS_OFFSET
  1398. default 0x00008000 if ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET
  1399. default 0xc0208000 if ARCH_SA1100 && SA1111
  1400. default 0xc0008000 if ARCH_SA1100 && !SA1111
  1401. default 0x30108000 if ARCH_S3C2410 && PM_H1940
  1402. default 0x28E08000 if ARCH_U300 && MACH_U300_SINGLE_RAM
  1403. default 0x48008000 if ARCH_U300 && !MACH_U300_SINGLE_RAM
  1404. help
  1405. ZRELADDR is the physical address where the decompressed kernel
  1406. image will be placed. ZRELADDR has to be specified when the
  1407. assumption of AUTO_ZRELADDR is not valid, or when ZBOOT_ROM is
  1408. selected.
  1409. endmenu
  1410. menu "CPU Power Management"
  1411. if ARCH_HAS_CPUFREQ
  1412. source "drivers/cpufreq/Kconfig"
  1413. config CPU_FREQ_SA1100
  1414. bool
  1415. config CPU_FREQ_SA1110
  1416. bool
  1417. config CPU_FREQ_INTEGRATOR
  1418. tristate "CPUfreq driver for ARM Integrator CPUs"
  1419. depends on ARCH_INTEGRATOR && CPU_FREQ
  1420. default y
  1421. help
  1422. This enables the CPUfreq driver for ARM Integrator CPUs.
  1423. For details, take a look at <file:Documentation/cpu-freq>.
  1424. If in doubt, say Y.
  1425. config CPU_FREQ_PXA
  1426. bool
  1427. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1428. default y
  1429. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1430. config CPU_FREQ_S3C64XX
  1431. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1432. depends on CPU_FREQ && CPU_S3C6410
  1433. config CPU_FREQ_S3C
  1434. bool
  1435. help
  1436. Internal configuration node for common cpufreq on Samsung SoC
  1437. config CPU_FREQ_S3C24XX
  1438. bool "CPUfreq driver for Samsung S3C24XX series CPUs"
  1439. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1440. select CPU_FREQ_S3C
  1441. help
  1442. This enables the CPUfreq driver for the Samsung S3C24XX family
  1443. of CPUs.
  1444. For details, take a look at <file:Documentation/cpu-freq>.
  1445. If in doubt, say N.
  1446. config CPU_FREQ_S3C24XX_PLL
  1447. bool "Support CPUfreq changing of PLL frequency"
  1448. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1449. help
  1450. Compile in support for changing the PLL frequency from the
  1451. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1452. after a frequency change, so by default it is not enabled.
  1453. This also means that the PLL tables for the selected CPU(s) will
  1454. be built which may increase the size of the kernel image.
  1455. config CPU_FREQ_S3C24XX_DEBUG
  1456. bool "Debug CPUfreq Samsung driver core"
  1457. depends on CPU_FREQ_S3C24XX
  1458. help
  1459. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1460. config CPU_FREQ_S3C24XX_IODEBUG
  1461. bool "Debug CPUfreq Samsung driver IO timing"
  1462. depends on CPU_FREQ_S3C24XX
  1463. help
  1464. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1465. config CPU_FREQ_S3C24XX_DEBUGFS
  1466. bool "Export debugfs for CPUFreq"
  1467. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1468. help
  1469. Export status information via debugfs.
  1470. endif
  1471. source "drivers/cpuidle/Kconfig"
  1472. endmenu
  1473. menu "Floating point emulation"
  1474. comment "At least one emulation must be selected"
  1475. config FPE_NWFPE
  1476. bool "NWFPE math emulation"
  1477. depends on !AEABI || OABI_COMPAT
  1478. ---help---
  1479. Say Y to include the NWFPE floating point emulator in the kernel.
  1480. This is necessary to run most binaries. Linux does not currently
  1481. support floating point hardware so you need to say Y here even if
  1482. your machine has an FPA or floating point co-processor podule.
  1483. You may say N here if you are going to load the Acorn FPEmulator
  1484. early in the bootup.
  1485. config FPE_NWFPE_XP
  1486. bool "Support extended precision"
  1487. depends on FPE_NWFPE
  1488. help
  1489. Say Y to include 80-bit support in the kernel floating-point
  1490. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1491. Note that gcc does not generate 80-bit operations by default,
  1492. so in most cases this option only enlarges the size of the
  1493. floating point emulator without any good reason.
  1494. You almost surely want to say N here.
  1495. config FPE_FASTFPE
  1496. bool "FastFPE math emulation (EXPERIMENTAL)"
  1497. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1498. ---help---
  1499. Say Y here to include the FAST floating point emulator in the kernel.
  1500. This is an experimental much faster emulator which now also has full
  1501. precision for the mantissa. It does not support any exceptions.
  1502. It is very simple, and approximately 3-6 times faster than NWFPE.
  1503. It should be sufficient for most programs. It may be not suitable
  1504. for scientific calculations, but you have to check this for yourself.
  1505. If you do not feel you need a faster FP emulation you should better
  1506. choose NWFPE.
  1507. config VFP
  1508. bool "VFP-format floating point maths"
  1509. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1510. help
  1511. Say Y to include VFP support code in the kernel. This is needed
  1512. if your hardware includes a VFP unit.
  1513. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1514. release notes and additional status information.
  1515. Say N if your target does not have VFP hardware.
  1516. config VFPv3
  1517. bool
  1518. depends on VFP
  1519. default y if CPU_V7
  1520. config NEON
  1521. bool "Advanced SIMD (NEON) Extension support"
  1522. depends on VFPv3 && CPU_V7
  1523. help
  1524. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1525. Extension.
  1526. endmenu
  1527. menu "Userspace binary formats"
  1528. source "fs/Kconfig.binfmt"
  1529. config ARTHUR
  1530. tristate "RISC OS personality"
  1531. depends on !AEABI
  1532. help
  1533. Say Y here to include the kernel code necessary if you want to run
  1534. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1535. experimental; if this sounds frightening, say N and sleep in peace.
  1536. You can also say M here to compile this support as a module (which
  1537. will be called arthur).
  1538. endmenu
  1539. menu "Power management options"
  1540. source "kernel/power/Kconfig"
  1541. config ARCH_SUSPEND_POSSIBLE
  1542. def_bool y
  1543. endmenu
  1544. source "net/Kconfig"
  1545. source "drivers/Kconfig"
  1546. source "fs/Kconfig"
  1547. source "arch/arm/Kconfig.debug"
  1548. source "security/Kconfig"
  1549. source "crypto/Kconfig"
  1550. source "lib/Kconfig"