Kconfig 53 KB

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  1. config ARM
  2. bool
  3. default y
  4. select HAVE_AOUT
  5. select HAVE_DMA_API_DEBUG
  6. select HAVE_IDE
  7. select HAVE_MEMBLOCK
  8. select RTC_LIB
  9. select SYS_SUPPORTS_APM_EMULATION
  10. select GENERIC_ATOMIC64 if (!CPU_32v6K || !AEABI)
  11. select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
  12. select HAVE_ARCH_KGDB
  13. select HAVE_KPROBES if (!XIP_KERNEL && !THUMB2_KERNEL)
  14. select HAVE_KRETPROBES if (HAVE_KPROBES)
  15. select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  16. select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
  17. select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
  18. select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
  19. select HAVE_GENERIC_DMA_COHERENT
  20. select HAVE_KERNEL_GZIP
  21. select HAVE_KERNEL_LZO
  22. select HAVE_KERNEL_LZMA
  23. select HAVE_IRQ_WORK
  24. select HAVE_PERF_EVENTS
  25. select PERF_USE_VMALLOC
  26. select HAVE_REGS_AND_STACK_ACCESS_API
  27. select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V7))
  28. select HAVE_C_RECORDMCOUNT
  29. select HAVE_GENERIC_HARDIRQS
  30. select HAVE_SPARSE_IRQ
  31. help
  32. The ARM series is a line of low-power-consumption RISC chip designs
  33. licensed by ARM Ltd and targeted at embedded applications and
  34. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  35. manufactured, but legacy ARM-based PC hardware remains popular in
  36. Europe. There is an ARM Linux project with a web page at
  37. <http://www.arm.linux.org.uk/>.
  38. config HAVE_PWM
  39. bool
  40. config MIGHT_HAVE_PCI
  41. bool
  42. config SYS_SUPPORTS_APM_EMULATION
  43. bool
  44. config HAVE_SCHED_CLOCK
  45. bool
  46. config GENERIC_GPIO
  47. bool
  48. config ARCH_USES_GETTIMEOFFSET
  49. bool
  50. default n
  51. config GENERIC_CLOCKEVENTS
  52. bool
  53. config GENERIC_CLOCKEVENTS_BROADCAST
  54. bool
  55. depends on GENERIC_CLOCKEVENTS
  56. default y if SMP
  57. config HAVE_TCM
  58. bool
  59. select GENERIC_ALLOCATOR
  60. config HAVE_PROC_CPU
  61. bool
  62. config NO_IOPORT
  63. bool
  64. config EISA
  65. bool
  66. ---help---
  67. The Extended Industry Standard Architecture (EISA) bus was
  68. developed as an open alternative to the IBM MicroChannel bus.
  69. The EISA bus provided some of the features of the IBM MicroChannel
  70. bus while maintaining backward compatibility with cards made for
  71. the older ISA bus. The EISA bus saw limited use between 1988 and
  72. 1995 when it was made obsolete by the PCI bus.
  73. Say Y here if you are building a kernel for an EISA-based machine.
  74. Otherwise, say N.
  75. config SBUS
  76. bool
  77. config MCA
  78. bool
  79. help
  80. MicroChannel Architecture is found in some IBM PS/2 machines and
  81. laptops. It is a bus system similar to PCI or ISA. See
  82. <file:Documentation/mca.txt> (and especially the web page given
  83. there) before attempting to build an MCA bus kernel.
  84. config STACKTRACE_SUPPORT
  85. bool
  86. default y
  87. config HAVE_LATENCYTOP_SUPPORT
  88. bool
  89. depends on !SMP
  90. default y
  91. config LOCKDEP_SUPPORT
  92. bool
  93. default y
  94. config TRACE_IRQFLAGS_SUPPORT
  95. bool
  96. default y
  97. config HARDIRQS_SW_RESEND
  98. bool
  99. default y
  100. config GENERIC_IRQ_PROBE
  101. bool
  102. default y
  103. config GENERIC_LOCKBREAK
  104. bool
  105. default y
  106. depends on SMP && PREEMPT
  107. config RWSEM_GENERIC_SPINLOCK
  108. bool
  109. default y
  110. config RWSEM_XCHGADD_ALGORITHM
  111. bool
  112. config ARCH_HAS_ILOG2_U32
  113. bool
  114. config ARCH_HAS_ILOG2_U64
  115. bool
  116. config ARCH_HAS_CPUFREQ
  117. bool
  118. help
  119. Internal node to signify that the ARCH has CPUFREQ support
  120. and that the relevant menu configurations are displayed for
  121. it.
  122. config ARCH_HAS_CPU_IDLE_WAIT
  123. def_bool y
  124. config GENERIC_HWEIGHT
  125. bool
  126. default y
  127. config GENERIC_CALIBRATE_DELAY
  128. bool
  129. default y
  130. config ARCH_MAY_HAVE_PC_FDC
  131. bool
  132. config ZONE_DMA
  133. bool
  134. config NEED_DMA_MAP_STATE
  135. def_bool y
  136. config GENERIC_ISA_DMA
  137. bool
  138. config FIQ
  139. bool
  140. config ARCH_MTD_XIP
  141. bool
  142. config ARM_L1_CACHE_SHIFT_6
  143. bool
  144. help
  145. Setting ARM L1 cache line size to 64 Bytes.
  146. config VECTORS_BASE
  147. hex
  148. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  149. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  150. default 0x00000000
  151. help
  152. The base address of exception vectors.
  153. config ARM_PATCH_PHYS_VIRT
  154. bool "Patch physical to virtual translations at runtime (EXPERIMENTAL)"
  155. depends on EXPERIMENTAL
  156. depends on !XIP_KERNEL && !THUMB2_KERNEL && MMU
  157. depends on !ARCH_MSM
  158. depends on !ARCH_REALVIEW || !SPARSEMEM
  159. help
  160. Patch phys-to-virt translation functions at runtime according to
  161. the position of the kernel in system memory.
  162. This can only be used with non-XIP, non-Thumb2, MMU kernels where
  163. the base of physical memory is at a 16MB boundary.
  164. source "init/Kconfig"
  165. source "kernel/Kconfig.freezer"
  166. menu "System Type"
  167. config MMU
  168. bool "MMU-based Paged Memory Management Support"
  169. default y
  170. help
  171. Select if you want MMU-based virtualised addressing space
  172. support by paged memory management. If unsure, say 'Y'.
  173. #
  174. # The "ARM system type" choice list is ordered alphabetically by option
  175. # text. Please add new entries in the option alphabetic order.
  176. #
  177. choice
  178. prompt "ARM system type"
  179. default ARCH_VERSATILE
  180. config ARCH_AAEC2000
  181. bool "Agilent AAEC-2000 based"
  182. select CPU_ARM920T
  183. select ARM_AMBA
  184. select HAVE_CLK
  185. select ARCH_USES_GETTIMEOFFSET
  186. help
  187. This enables support for systems based on the Agilent AAEC-2000
  188. config ARCH_INTEGRATOR
  189. bool "ARM Ltd. Integrator family"
  190. select ARM_AMBA
  191. select ARCH_HAS_CPUFREQ
  192. select CLKDEV_LOOKUP
  193. select ICST
  194. select GENERIC_CLOCKEVENTS
  195. select PLAT_VERSATILE
  196. help
  197. Support for ARM's Integrator platform.
  198. config ARCH_REALVIEW
  199. bool "ARM Ltd. RealView family"
  200. select ARM_AMBA
  201. select CLKDEV_LOOKUP
  202. select HAVE_SCHED_CLOCK
  203. select ICST
  204. select GENERIC_CLOCKEVENTS
  205. select ARCH_WANT_OPTIONAL_GPIOLIB
  206. select PLAT_VERSATILE
  207. select ARM_TIMER_SP804
  208. select GPIO_PL061 if GPIOLIB
  209. help
  210. This enables support for ARM Ltd RealView boards.
  211. config ARCH_VERSATILE
  212. bool "ARM Ltd. Versatile family"
  213. select ARM_AMBA
  214. select ARM_VIC
  215. select CLKDEV_LOOKUP
  216. select HAVE_SCHED_CLOCK
  217. select ICST
  218. select GENERIC_CLOCKEVENTS
  219. select ARCH_WANT_OPTIONAL_GPIOLIB
  220. select PLAT_VERSATILE
  221. select ARM_TIMER_SP804
  222. help
  223. This enables support for ARM Ltd Versatile board.
  224. config ARCH_VEXPRESS
  225. bool "ARM Ltd. Versatile Express family"
  226. select ARCH_WANT_OPTIONAL_GPIOLIB
  227. select ARM_AMBA
  228. select ARM_TIMER_SP804
  229. select CLKDEV_LOOKUP
  230. select GENERIC_CLOCKEVENTS
  231. select HAVE_CLK
  232. select HAVE_SCHED_CLOCK
  233. select ICST
  234. select PLAT_VERSATILE
  235. help
  236. This enables support for the ARM Ltd Versatile Express boards.
  237. config ARCH_AT91
  238. bool "Atmel AT91"
  239. select ARCH_REQUIRE_GPIOLIB
  240. select HAVE_CLK
  241. help
  242. This enables support for systems based on the Atmel AT91RM9200,
  243. AT91SAM9 and AT91CAP9 processors.
  244. config ARCH_BCMRING
  245. bool "Broadcom BCMRING"
  246. depends on MMU
  247. select CPU_V6
  248. select ARM_AMBA
  249. select CLKDEV_LOOKUP
  250. select GENERIC_CLOCKEVENTS
  251. select ARCH_WANT_OPTIONAL_GPIOLIB
  252. help
  253. Support for Broadcom's BCMRing platform.
  254. config ARCH_CLPS711X
  255. bool "Cirrus Logic CLPS711x/EP721x-based"
  256. select CPU_ARM720T
  257. select ARCH_USES_GETTIMEOFFSET
  258. help
  259. Support for Cirrus Logic 711x/721x based boards.
  260. config ARCH_CNS3XXX
  261. bool "Cavium Networks CNS3XXX family"
  262. select CPU_V6
  263. select GENERIC_CLOCKEVENTS
  264. select ARM_GIC
  265. select MIGHT_HAVE_PCI
  266. select PCI_DOMAINS if PCI
  267. help
  268. Support for Cavium Networks CNS3XXX platform.
  269. config ARCH_GEMINI
  270. bool "Cortina Systems Gemini"
  271. select CPU_FA526
  272. select ARCH_REQUIRE_GPIOLIB
  273. select ARCH_USES_GETTIMEOFFSET
  274. help
  275. Support for the Cortina Systems Gemini family SoCs
  276. config ARCH_EBSA110
  277. bool "EBSA-110"
  278. select CPU_SA110
  279. select ISA
  280. select NO_IOPORT
  281. select ARCH_USES_GETTIMEOFFSET
  282. help
  283. This is an evaluation board for the StrongARM processor available
  284. from Digital. It has limited hardware on-board, including an
  285. Ethernet interface, two PCMCIA sockets, two serial ports and a
  286. parallel port.
  287. config ARCH_EP93XX
  288. bool "EP93xx-based"
  289. select CPU_ARM920T
  290. select ARM_AMBA
  291. select ARM_VIC
  292. select CLKDEV_LOOKUP
  293. select ARCH_REQUIRE_GPIOLIB
  294. select ARCH_HAS_HOLES_MEMORYMODEL
  295. select ARCH_USES_GETTIMEOFFSET
  296. help
  297. This enables support for the Cirrus EP93xx series of CPUs.
  298. config ARCH_FOOTBRIDGE
  299. bool "FootBridge"
  300. select CPU_SA110
  301. select FOOTBRIDGE
  302. select ARCH_USES_GETTIMEOFFSET
  303. help
  304. Support for systems based on the DC21285 companion chip
  305. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  306. config ARCH_MXC
  307. bool "Freescale MXC/iMX-based"
  308. select GENERIC_CLOCKEVENTS
  309. select ARCH_REQUIRE_GPIOLIB
  310. select CLKDEV_LOOKUP
  311. help
  312. Support for Freescale MXC/iMX-based family of processors
  313. config ARCH_MXS
  314. bool "Freescale MXS-based"
  315. select GENERIC_CLOCKEVENTS
  316. select ARCH_REQUIRE_GPIOLIB
  317. select CLKDEV_LOOKUP
  318. help
  319. Support for Freescale MXS-based family of processors
  320. config ARCH_STMP3XXX
  321. bool "Freescale STMP3xxx"
  322. select CPU_ARM926T
  323. select CLKDEV_LOOKUP
  324. select ARCH_REQUIRE_GPIOLIB
  325. select GENERIC_CLOCKEVENTS
  326. select USB_ARCH_HAS_EHCI
  327. help
  328. Support for systems based on the Freescale 3xxx CPUs.
  329. config ARCH_NETX
  330. bool "Hilscher NetX based"
  331. select CPU_ARM926T
  332. select ARM_VIC
  333. select GENERIC_CLOCKEVENTS
  334. help
  335. This enables support for systems based on the Hilscher NetX Soc
  336. config ARCH_H720X
  337. bool "Hynix HMS720x-based"
  338. select CPU_ARM720T
  339. select ISA_DMA_API
  340. select ARCH_USES_GETTIMEOFFSET
  341. help
  342. This enables support for systems based on the Hynix HMS720x
  343. config ARCH_IOP13XX
  344. bool "IOP13xx-based"
  345. depends on MMU
  346. select CPU_XSC3
  347. select PLAT_IOP
  348. select PCI
  349. select ARCH_SUPPORTS_MSI
  350. select VMSPLIT_1G
  351. help
  352. Support for Intel's IOP13XX (XScale) family of processors.
  353. config ARCH_IOP32X
  354. bool "IOP32x-based"
  355. depends on MMU
  356. select CPU_XSCALE
  357. select PLAT_IOP
  358. select PCI
  359. select ARCH_REQUIRE_GPIOLIB
  360. help
  361. Support for Intel's 80219 and IOP32X (XScale) family of
  362. processors.
  363. config ARCH_IOP33X
  364. bool "IOP33x-based"
  365. depends on MMU
  366. select CPU_XSCALE
  367. select PLAT_IOP
  368. select PCI
  369. select ARCH_REQUIRE_GPIOLIB
  370. help
  371. Support for Intel's IOP33X (XScale) family of processors.
  372. config ARCH_IXP23XX
  373. bool "IXP23XX-based"
  374. depends on MMU
  375. select CPU_XSC3
  376. select PCI
  377. select ARCH_USES_GETTIMEOFFSET
  378. help
  379. Support for Intel's IXP23xx (XScale) family of processors.
  380. config ARCH_IXP2000
  381. bool "IXP2400/2800-based"
  382. depends on MMU
  383. select CPU_XSCALE
  384. select PCI
  385. select ARCH_USES_GETTIMEOFFSET
  386. help
  387. Support for Intel's IXP2400/2800 (XScale) family of processors.
  388. config ARCH_IXP4XX
  389. bool "IXP4xx-based"
  390. depends on MMU
  391. select CPU_XSCALE
  392. select GENERIC_GPIO
  393. select GENERIC_CLOCKEVENTS
  394. select HAVE_SCHED_CLOCK
  395. select MIGHT_HAVE_PCI
  396. select DMABOUNCE if PCI
  397. help
  398. Support for Intel's IXP4XX (XScale) family of processors.
  399. config ARCH_DOVE
  400. bool "Marvell Dove"
  401. select PCI
  402. select ARCH_REQUIRE_GPIOLIB
  403. select GENERIC_CLOCKEVENTS
  404. select PLAT_ORION
  405. help
  406. Support for the Marvell Dove SoC 88AP510
  407. config ARCH_KIRKWOOD
  408. bool "Marvell Kirkwood"
  409. select CPU_FEROCEON
  410. select PCI
  411. select ARCH_REQUIRE_GPIOLIB
  412. select GENERIC_CLOCKEVENTS
  413. select PLAT_ORION
  414. help
  415. Support for the following Marvell Kirkwood series SoCs:
  416. 88F6180, 88F6192 and 88F6281.
  417. config ARCH_LOKI
  418. bool "Marvell Loki (88RC8480)"
  419. select CPU_FEROCEON
  420. select GENERIC_CLOCKEVENTS
  421. select PLAT_ORION
  422. help
  423. Support for the Marvell Loki (88RC8480) SoC.
  424. config ARCH_LPC32XX
  425. bool "NXP LPC32XX"
  426. select CPU_ARM926T
  427. select ARCH_REQUIRE_GPIOLIB
  428. select HAVE_IDE
  429. select ARM_AMBA
  430. select USB_ARCH_HAS_OHCI
  431. select CLKDEV_LOOKUP
  432. select GENERIC_TIME
  433. select GENERIC_CLOCKEVENTS
  434. help
  435. Support for the NXP LPC32XX family of processors
  436. config ARCH_MV78XX0
  437. bool "Marvell MV78xx0"
  438. select CPU_FEROCEON
  439. select PCI
  440. select ARCH_REQUIRE_GPIOLIB
  441. select GENERIC_CLOCKEVENTS
  442. select PLAT_ORION
  443. help
  444. Support for the following Marvell MV78xx0 series SoCs:
  445. MV781x0, MV782x0.
  446. config ARCH_ORION5X
  447. bool "Marvell Orion"
  448. depends on MMU
  449. select CPU_FEROCEON
  450. select PCI
  451. select ARCH_REQUIRE_GPIOLIB
  452. select GENERIC_CLOCKEVENTS
  453. select PLAT_ORION
  454. help
  455. Support for the following Marvell Orion 5x series SoCs:
  456. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  457. Orion-2 (5281), Orion-1-90 (6183).
  458. config ARCH_MMP
  459. bool "Marvell PXA168/910/MMP2"
  460. depends on MMU
  461. select ARCH_REQUIRE_GPIOLIB
  462. select CLKDEV_LOOKUP
  463. select GENERIC_CLOCKEVENTS
  464. select HAVE_SCHED_CLOCK
  465. select TICK_ONESHOT
  466. select PLAT_PXA
  467. select SPARSE_IRQ
  468. help
  469. Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
  470. config ARCH_KS8695
  471. bool "Micrel/Kendin KS8695"
  472. select CPU_ARM922T
  473. select ARCH_REQUIRE_GPIOLIB
  474. select ARCH_USES_GETTIMEOFFSET
  475. help
  476. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  477. System-on-Chip devices.
  478. config ARCH_NS9XXX
  479. bool "NetSilicon NS9xxx"
  480. select CPU_ARM926T
  481. select GENERIC_GPIO
  482. select GENERIC_CLOCKEVENTS
  483. select HAVE_CLK
  484. help
  485. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  486. System.
  487. <http://www.digi.com/products/microprocessors/index.jsp>
  488. config ARCH_W90X900
  489. bool "Nuvoton W90X900 CPU"
  490. select CPU_ARM926T
  491. select ARCH_REQUIRE_GPIOLIB
  492. select CLKDEV_LOOKUP
  493. select GENERIC_CLOCKEVENTS
  494. help
  495. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  496. At present, the w90x900 has been renamed nuc900, regarding
  497. the ARM series product line, you can login the following
  498. link address to know more.
  499. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  500. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  501. config ARCH_NUC93X
  502. bool "Nuvoton NUC93X CPU"
  503. select CPU_ARM926T
  504. select CLKDEV_LOOKUP
  505. help
  506. Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
  507. low-power and high performance MPEG-4/JPEG multimedia controller chip.
  508. config ARCH_TEGRA
  509. bool "NVIDIA Tegra"
  510. select CLKDEV_LOOKUP
  511. select GENERIC_TIME
  512. select GENERIC_CLOCKEVENTS
  513. select GENERIC_GPIO
  514. select HAVE_CLK
  515. select HAVE_SCHED_CLOCK
  516. select ARCH_HAS_BARRIERS if CACHE_L2X0
  517. select ARCH_HAS_CPUFREQ
  518. help
  519. This enables support for NVIDIA Tegra based systems (Tegra APX,
  520. Tegra 6xx and Tegra 2 series).
  521. config ARCH_PNX4008
  522. bool "Philips Nexperia PNX4008 Mobile"
  523. select CPU_ARM926T
  524. select CLKDEV_LOOKUP
  525. select ARCH_USES_GETTIMEOFFSET
  526. help
  527. This enables support for Philips PNX4008 mobile platform.
  528. config ARCH_PXA
  529. bool "PXA2xx/PXA3xx-based"
  530. depends on MMU
  531. select ARCH_MTD_XIP
  532. select ARCH_HAS_CPUFREQ
  533. select CLKDEV_LOOKUP
  534. select ARCH_REQUIRE_GPIOLIB
  535. select GENERIC_CLOCKEVENTS
  536. select HAVE_SCHED_CLOCK
  537. select TICK_ONESHOT
  538. select PLAT_PXA
  539. select SPARSE_IRQ
  540. help
  541. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  542. config ARCH_MSM
  543. bool "Qualcomm MSM"
  544. select HAVE_CLK
  545. select GENERIC_CLOCKEVENTS
  546. select ARCH_REQUIRE_GPIOLIB
  547. help
  548. Support for Qualcomm MSM/QSD based systems. This runs on the
  549. apps processor of the MSM/QSD and depends on a shared memory
  550. interface to the modem processor which runs the baseband
  551. stack and controls some vital subsystems
  552. (clock and power control, etc).
  553. config ARCH_SHMOBILE
  554. bool "Renesas SH-Mobile / R-Mobile"
  555. select HAVE_CLK
  556. select CLKDEV_LOOKUP
  557. select GENERIC_CLOCKEVENTS
  558. select NO_IOPORT
  559. select SPARSE_IRQ
  560. select MULTI_IRQ_HANDLER
  561. help
  562. Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
  563. config ARCH_RPC
  564. bool "RiscPC"
  565. select ARCH_ACORN
  566. select FIQ
  567. select TIMER_ACORN
  568. select ARCH_MAY_HAVE_PC_FDC
  569. select HAVE_PATA_PLATFORM
  570. select ISA_DMA_API
  571. select NO_IOPORT
  572. select ARCH_SPARSEMEM_ENABLE
  573. select ARCH_USES_GETTIMEOFFSET
  574. help
  575. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  576. CD-ROM interface, serial and parallel port, and the floppy drive.
  577. config ARCH_SA1100
  578. bool "SA1100-based"
  579. select CPU_SA1100
  580. select ISA
  581. select ARCH_SPARSEMEM_ENABLE
  582. select ARCH_MTD_XIP
  583. select ARCH_HAS_CPUFREQ
  584. select CPU_FREQ
  585. select GENERIC_CLOCKEVENTS
  586. select HAVE_CLK
  587. select HAVE_SCHED_CLOCK
  588. select TICK_ONESHOT
  589. select ARCH_REQUIRE_GPIOLIB
  590. help
  591. Support for StrongARM 11x0 based boards.
  592. config ARCH_S3C2410
  593. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
  594. select GENERIC_GPIO
  595. select ARCH_HAS_CPUFREQ
  596. select HAVE_CLK
  597. select ARCH_USES_GETTIMEOFFSET
  598. select HAVE_S3C2410_I2C if I2C
  599. help
  600. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  601. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  602. the Samsung SMDK2410 development board (and derivatives).
  603. Note, the S3C2416 and the S3C2450 are so close that they even share
  604. the same SoC ID code. This means that there is no seperate machine
  605. directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
  606. config ARCH_S3C64XX
  607. bool "Samsung S3C64XX"
  608. select PLAT_SAMSUNG
  609. select CPU_V6
  610. select ARM_VIC
  611. select HAVE_CLK
  612. select NO_IOPORT
  613. select ARCH_USES_GETTIMEOFFSET
  614. select ARCH_HAS_CPUFREQ
  615. select ARCH_REQUIRE_GPIOLIB
  616. select SAMSUNG_CLKSRC
  617. select SAMSUNG_IRQ_VIC_TIMER
  618. select SAMSUNG_IRQ_UART
  619. select S3C_GPIO_TRACK
  620. select S3C_GPIO_PULL_UPDOWN
  621. select S3C_GPIO_CFG_S3C24XX
  622. select S3C_GPIO_CFG_S3C64XX
  623. select S3C_DEV_NAND
  624. select USB_ARCH_HAS_OHCI
  625. select SAMSUNG_GPIOLIB_4BIT
  626. select HAVE_S3C2410_I2C if I2C
  627. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  628. help
  629. Samsung S3C64XX series based systems
  630. config ARCH_S5P64X0
  631. bool "Samsung S5P6440 S5P6450"
  632. select CPU_V6
  633. select GENERIC_GPIO
  634. select HAVE_CLK
  635. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  636. select ARCH_USES_GETTIMEOFFSET
  637. select HAVE_S3C2410_I2C if I2C
  638. select HAVE_S3C_RTC if RTC_CLASS
  639. help
  640. Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
  641. SMDK6450.
  642. config ARCH_S5P6442
  643. bool "Samsung S5P6442"
  644. select CPU_V6
  645. select GENERIC_GPIO
  646. select HAVE_CLK
  647. select ARCH_USES_GETTIMEOFFSET
  648. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  649. help
  650. Samsung S5P6442 CPU based systems
  651. config ARCH_S5PC100
  652. bool "Samsung S5PC100"
  653. select GENERIC_GPIO
  654. select HAVE_CLK
  655. select CPU_V7
  656. select ARM_L1_CACHE_SHIFT_6
  657. select ARCH_USES_GETTIMEOFFSET
  658. select HAVE_S3C2410_I2C if I2C
  659. select HAVE_S3C_RTC if RTC_CLASS
  660. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  661. help
  662. Samsung S5PC100 series based systems
  663. config ARCH_S5PV210
  664. bool "Samsung S5PV210/S5PC110"
  665. select CPU_V7
  666. select ARCH_SPARSEMEM_ENABLE
  667. select GENERIC_GPIO
  668. select HAVE_CLK
  669. select ARM_L1_CACHE_SHIFT_6
  670. select ARCH_HAS_CPUFREQ
  671. select ARCH_USES_GETTIMEOFFSET
  672. select HAVE_S3C2410_I2C if I2C
  673. select HAVE_S3C_RTC if RTC_CLASS
  674. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  675. help
  676. Samsung S5PV210/S5PC110 series based systems
  677. config ARCH_S5PV310
  678. bool "Samsung S5PV310/S5PC210"
  679. select CPU_V7
  680. select ARCH_SPARSEMEM_ENABLE
  681. select GENERIC_GPIO
  682. select HAVE_CLK
  683. select ARCH_HAS_CPUFREQ
  684. select GENERIC_CLOCKEVENTS
  685. select HAVE_S3C_RTC if RTC_CLASS
  686. select HAVE_S3C2410_I2C if I2C
  687. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  688. help
  689. Samsung S5PV310 series based systems
  690. config ARCH_SHARK
  691. bool "Shark"
  692. select CPU_SA110
  693. select ISA
  694. select ISA_DMA
  695. select ZONE_DMA
  696. select PCI
  697. select ARCH_USES_GETTIMEOFFSET
  698. help
  699. Support for the StrongARM based Digital DNARD machine, also known
  700. as "Shark" (<http://www.shark-linux.de/shark.html>).
  701. config ARCH_TCC_926
  702. bool "Telechips TCC ARM926-based systems"
  703. select CPU_ARM926T
  704. select HAVE_CLK
  705. select CLKDEV_LOOKUP
  706. select GENERIC_CLOCKEVENTS
  707. help
  708. Support for Telechips TCC ARM926-based systems.
  709. config ARCH_LH7A40X
  710. bool "Sharp LH7A40X"
  711. select CPU_ARM922T
  712. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  713. select ARCH_USES_GETTIMEOFFSET
  714. help
  715. Say Y here for systems based on one of the Sharp LH7A40X
  716. System on a Chip processors. These CPUs include an ARM922T
  717. core with a wide array of integrated devices for
  718. hand-held and low-power applications.
  719. config ARCH_U300
  720. bool "ST-Ericsson U300 Series"
  721. depends on MMU
  722. select CPU_ARM926T
  723. select HAVE_SCHED_CLOCK
  724. select HAVE_TCM
  725. select ARM_AMBA
  726. select ARM_VIC
  727. select GENERIC_CLOCKEVENTS
  728. select CLKDEV_LOOKUP
  729. select GENERIC_GPIO
  730. help
  731. Support for ST-Ericsson U300 series mobile platforms.
  732. config ARCH_U8500
  733. bool "ST-Ericsson U8500 Series"
  734. select CPU_V7
  735. select ARM_AMBA
  736. select GENERIC_CLOCKEVENTS
  737. select CLKDEV_LOOKUP
  738. select ARCH_REQUIRE_GPIOLIB
  739. select ARCH_HAS_CPUFREQ
  740. help
  741. Support for ST-Ericsson's Ux500 architecture
  742. config ARCH_NOMADIK
  743. bool "STMicroelectronics Nomadik"
  744. select ARM_AMBA
  745. select ARM_VIC
  746. select CPU_ARM926T
  747. select CLKDEV_LOOKUP
  748. select GENERIC_CLOCKEVENTS
  749. select ARCH_REQUIRE_GPIOLIB
  750. help
  751. Support for the Nomadik platform by ST-Ericsson
  752. config ARCH_DAVINCI
  753. bool "TI DaVinci"
  754. select GENERIC_CLOCKEVENTS
  755. select ARCH_REQUIRE_GPIOLIB
  756. select ZONE_DMA
  757. select HAVE_IDE
  758. select CLKDEV_LOOKUP
  759. select GENERIC_ALLOCATOR
  760. select ARCH_HAS_HOLES_MEMORYMODEL
  761. help
  762. Support for TI's DaVinci platform.
  763. config ARCH_OMAP
  764. bool "TI OMAP"
  765. select HAVE_CLK
  766. select ARCH_REQUIRE_GPIOLIB
  767. select ARCH_HAS_CPUFREQ
  768. select GENERIC_CLOCKEVENTS
  769. select HAVE_SCHED_CLOCK
  770. select ARCH_HAS_HOLES_MEMORYMODEL
  771. help
  772. Support for TI's OMAP platform (OMAP1/2/3/4).
  773. config PLAT_SPEAR
  774. bool "ST SPEAr"
  775. select ARM_AMBA
  776. select ARCH_REQUIRE_GPIOLIB
  777. select CLKDEV_LOOKUP
  778. select GENERIC_CLOCKEVENTS
  779. select HAVE_CLK
  780. help
  781. Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
  782. endchoice
  783. #
  784. # This is sorted alphabetically by mach-* pathname. However, plat-*
  785. # Kconfigs may be included either alphabetically (according to the
  786. # plat- suffix) or along side the corresponding mach-* source.
  787. #
  788. source "arch/arm/mach-aaec2000/Kconfig"
  789. source "arch/arm/mach-at91/Kconfig"
  790. source "arch/arm/mach-bcmring/Kconfig"
  791. source "arch/arm/mach-clps711x/Kconfig"
  792. source "arch/arm/mach-cns3xxx/Kconfig"
  793. source "arch/arm/mach-davinci/Kconfig"
  794. source "arch/arm/mach-dove/Kconfig"
  795. source "arch/arm/mach-ep93xx/Kconfig"
  796. source "arch/arm/mach-footbridge/Kconfig"
  797. source "arch/arm/mach-gemini/Kconfig"
  798. source "arch/arm/mach-h720x/Kconfig"
  799. source "arch/arm/mach-integrator/Kconfig"
  800. source "arch/arm/mach-iop32x/Kconfig"
  801. source "arch/arm/mach-iop33x/Kconfig"
  802. source "arch/arm/mach-iop13xx/Kconfig"
  803. source "arch/arm/mach-ixp4xx/Kconfig"
  804. source "arch/arm/mach-ixp2000/Kconfig"
  805. source "arch/arm/mach-ixp23xx/Kconfig"
  806. source "arch/arm/mach-kirkwood/Kconfig"
  807. source "arch/arm/mach-ks8695/Kconfig"
  808. source "arch/arm/mach-lh7a40x/Kconfig"
  809. source "arch/arm/mach-loki/Kconfig"
  810. source "arch/arm/mach-lpc32xx/Kconfig"
  811. source "arch/arm/mach-msm/Kconfig"
  812. source "arch/arm/mach-mv78xx0/Kconfig"
  813. source "arch/arm/plat-mxc/Kconfig"
  814. source "arch/arm/mach-mxs/Kconfig"
  815. source "arch/arm/mach-netx/Kconfig"
  816. source "arch/arm/mach-nomadik/Kconfig"
  817. source "arch/arm/plat-nomadik/Kconfig"
  818. source "arch/arm/mach-ns9xxx/Kconfig"
  819. source "arch/arm/mach-nuc93x/Kconfig"
  820. source "arch/arm/plat-omap/Kconfig"
  821. source "arch/arm/mach-omap1/Kconfig"
  822. source "arch/arm/mach-omap2/Kconfig"
  823. source "arch/arm/mach-orion5x/Kconfig"
  824. source "arch/arm/mach-pxa/Kconfig"
  825. source "arch/arm/plat-pxa/Kconfig"
  826. source "arch/arm/mach-mmp/Kconfig"
  827. source "arch/arm/mach-realview/Kconfig"
  828. source "arch/arm/mach-sa1100/Kconfig"
  829. source "arch/arm/plat-samsung/Kconfig"
  830. source "arch/arm/plat-s3c24xx/Kconfig"
  831. source "arch/arm/plat-s5p/Kconfig"
  832. source "arch/arm/plat-spear/Kconfig"
  833. source "arch/arm/plat-tcc/Kconfig"
  834. if ARCH_S3C2410
  835. source "arch/arm/mach-s3c2400/Kconfig"
  836. source "arch/arm/mach-s3c2410/Kconfig"
  837. source "arch/arm/mach-s3c2412/Kconfig"
  838. source "arch/arm/mach-s3c2416/Kconfig"
  839. source "arch/arm/mach-s3c2440/Kconfig"
  840. source "arch/arm/mach-s3c2443/Kconfig"
  841. endif
  842. if ARCH_S3C64XX
  843. source "arch/arm/mach-s3c64xx/Kconfig"
  844. endif
  845. source "arch/arm/mach-s5p64x0/Kconfig"
  846. source "arch/arm/mach-s5p6442/Kconfig"
  847. source "arch/arm/mach-s5pc100/Kconfig"
  848. source "arch/arm/mach-s5pv210/Kconfig"
  849. source "arch/arm/mach-s5pv310/Kconfig"
  850. source "arch/arm/mach-shmobile/Kconfig"
  851. source "arch/arm/plat-stmp3xxx/Kconfig"
  852. source "arch/arm/mach-tegra/Kconfig"
  853. source "arch/arm/mach-u300/Kconfig"
  854. source "arch/arm/mach-ux500/Kconfig"
  855. source "arch/arm/mach-versatile/Kconfig"
  856. source "arch/arm/mach-vexpress/Kconfig"
  857. source "arch/arm/mach-w90x900/Kconfig"
  858. # Definitions to make life easier
  859. config ARCH_ACORN
  860. bool
  861. config PLAT_IOP
  862. bool
  863. select GENERIC_CLOCKEVENTS
  864. select HAVE_SCHED_CLOCK
  865. config PLAT_ORION
  866. bool
  867. select HAVE_SCHED_CLOCK
  868. config PLAT_PXA
  869. bool
  870. config PLAT_VERSATILE
  871. bool
  872. config ARM_TIMER_SP804
  873. bool
  874. source arch/arm/mm/Kconfig
  875. config IWMMXT
  876. bool "Enable iWMMXt support"
  877. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
  878. default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
  879. help
  880. Enable support for iWMMXt context switching at run time if
  881. running on a CPU that supports it.
  882. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  883. config XSCALE_PMU
  884. bool
  885. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  886. default y
  887. config CPU_HAS_PMU
  888. depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
  889. (!ARCH_OMAP3 || OMAP3_EMU)
  890. default y
  891. bool
  892. config MULTI_IRQ_HANDLER
  893. bool
  894. help
  895. Allow each machine to specify it's own IRQ handler at run time.
  896. if !MMU
  897. source "arch/arm/Kconfig-nommu"
  898. endif
  899. config ARM_ERRATA_411920
  900. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  901. depends on CPU_V6
  902. help
  903. Invalidation of the Instruction Cache operation can
  904. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  905. It does not affect the MPCore. This option enables the ARM Ltd.
  906. recommended workaround.
  907. config ARM_ERRATA_430973
  908. bool "ARM errata: Stale prediction on replaced interworking branch"
  909. depends on CPU_V7
  910. help
  911. This option enables the workaround for the 430973 Cortex-A8
  912. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  913. interworking branch is replaced with another code sequence at the
  914. same virtual address, whether due to self-modifying code or virtual
  915. to physical address re-mapping, Cortex-A8 does not recover from the
  916. stale interworking branch prediction. This results in Cortex-A8
  917. executing the new code sequence in the incorrect ARM or Thumb state.
  918. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  919. and also flushes the branch target cache at every context switch.
  920. Note that setting specific bits in the ACTLR register may not be
  921. available in non-secure mode.
  922. config ARM_ERRATA_458693
  923. bool "ARM errata: Processor deadlock when a false hazard is created"
  924. depends on CPU_V7
  925. help
  926. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  927. erratum. For very specific sequences of memory operations, it is
  928. possible for a hazard condition intended for a cache line to instead
  929. be incorrectly associated with a different cache line. This false
  930. hazard might then cause a processor deadlock. The workaround enables
  931. the L1 caching of the NEON accesses and disables the PLD instruction
  932. in the ACTLR register. Note that setting specific bits in the ACTLR
  933. register may not be available in non-secure mode.
  934. config ARM_ERRATA_460075
  935. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  936. depends on CPU_V7
  937. help
  938. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  939. erratum. Any asynchronous access to the L2 cache may encounter a
  940. situation in which recent store transactions to the L2 cache are lost
  941. and overwritten with stale memory contents from external memory. The
  942. workaround disables the write-allocate mode for the L2 cache via the
  943. ACTLR register. Note that setting specific bits in the ACTLR register
  944. may not be available in non-secure mode.
  945. config ARM_ERRATA_742230
  946. bool "ARM errata: DMB operation may be faulty"
  947. depends on CPU_V7 && SMP
  948. help
  949. This option enables the workaround for the 742230 Cortex-A9
  950. (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
  951. between two write operations may not ensure the correct visibility
  952. ordering of the two writes. This workaround sets a specific bit in
  953. the diagnostic register of the Cortex-A9 which causes the DMB
  954. instruction to behave as a DSB, ensuring the correct behaviour of
  955. the two writes.
  956. config ARM_ERRATA_742231
  957. bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
  958. depends on CPU_V7 && SMP
  959. help
  960. This option enables the workaround for the 742231 Cortex-A9
  961. (r2p0..r2p2) erratum. Under certain conditions, specific to the
  962. Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
  963. accessing some data located in the same cache line, may get corrupted
  964. data due to bad handling of the address hazard when the line gets
  965. replaced from one of the CPUs at the same time as another CPU is
  966. accessing it. This workaround sets specific bits in the diagnostic
  967. register of the Cortex-A9 which reduces the linefill issuing
  968. capabilities of the processor.
  969. config PL310_ERRATA_588369
  970. bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
  971. depends on CACHE_L2X0 && ARCH_OMAP4
  972. help
  973. The PL310 L2 cache controller implements three types of Clean &
  974. Invalidate maintenance operations: by Physical Address
  975. (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
  976. They are architecturally defined to behave as the execution of a
  977. clean operation followed immediately by an invalidate operation,
  978. both performing to the same memory location. This functionality
  979. is not correctly implemented in PL310 as clean lines are not
  980. invalidated as a result of these operations. Note that this errata
  981. uses Texas Instrument's secure monitor api.
  982. config ARM_ERRATA_720789
  983. bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
  984. depends on CPU_V7 && SMP
  985. help
  986. This option enables the workaround for the 720789 Cortex-A9 (prior to
  987. r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
  988. broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
  989. As a consequence of this erratum, some TLB entries which should be
  990. invalidated are not, resulting in an incoherency in the system page
  991. tables. The workaround changes the TLB flushing routines to invalidate
  992. entries regardless of the ASID.
  993. config ARM_ERRATA_743622
  994. bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
  995. depends on CPU_V7
  996. help
  997. This option enables the workaround for the 743622 Cortex-A9
  998. (r2p0..r2p2) erratum. Under very rare conditions, a faulty
  999. optimisation in the Cortex-A9 Store Buffer may lead to data
  1000. corruption. This workaround sets a specific bit in the diagnostic
  1001. register of the Cortex-A9 which disables the Store Buffer
  1002. optimisation, preventing the defect from occurring. This has no
  1003. visible impact on the overall performance or power consumption of the
  1004. processor.
  1005. endmenu
  1006. source "arch/arm/common/Kconfig"
  1007. menu "Bus support"
  1008. config ARM_AMBA
  1009. bool
  1010. config ISA
  1011. bool
  1012. help
  1013. Find out whether you have ISA slots on your motherboard. ISA is the
  1014. name of a bus system, i.e. the way the CPU talks to the other stuff
  1015. inside your box. Other bus systems are PCI, EISA, MicroChannel
  1016. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  1017. newer boards don't support it. If you have ISA, say Y, otherwise N.
  1018. # Select ISA DMA controller support
  1019. config ISA_DMA
  1020. bool
  1021. select ISA_DMA_API
  1022. # Select ISA DMA interface
  1023. config ISA_DMA_API
  1024. bool
  1025. config PCI
  1026. bool "PCI support" if MIGHT_HAVE_PCI
  1027. help
  1028. Find out whether you have a PCI motherboard. PCI is the name of a
  1029. bus system, i.e. the way the CPU talks to the other stuff inside
  1030. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  1031. VESA. If you have PCI, say Y, otherwise N.
  1032. config PCI_DOMAINS
  1033. bool
  1034. depends on PCI
  1035. config PCI_NANOENGINE
  1036. bool "BSE nanoEngine PCI support"
  1037. depends on SA1100_NANOENGINE
  1038. help
  1039. Enable PCI on the BSE nanoEngine board.
  1040. config PCI_SYSCALL
  1041. def_bool PCI
  1042. # Select the host bridge type
  1043. config PCI_HOST_VIA82C505
  1044. bool
  1045. depends on PCI && ARCH_SHARK
  1046. default y
  1047. config PCI_HOST_ITE8152
  1048. bool
  1049. depends on PCI && MACH_ARMCORE
  1050. default y
  1051. select DMABOUNCE
  1052. source "drivers/pci/Kconfig"
  1053. source "drivers/pcmcia/Kconfig"
  1054. endmenu
  1055. menu "Kernel Features"
  1056. source "kernel/time/Kconfig"
  1057. config SMP
  1058. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  1059. depends on EXPERIMENTAL
  1060. depends on GENERIC_CLOCKEVENTS
  1061. depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
  1062. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
  1063. ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
  1064. ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE
  1065. select USE_GENERIC_SMP_HELPERS
  1066. select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
  1067. help
  1068. This enables support for systems with more than one CPU. If you have
  1069. a system with only one CPU, like most personal computers, say N. If
  1070. you have a system with more than one CPU, say Y.
  1071. If you say N here, the kernel will run on single and multiprocessor
  1072. machines, but will use only one CPU of a multiprocessor machine. If
  1073. you say Y here, the kernel will run on many, but not all, single
  1074. processor machines. On a single processor machine, the kernel will
  1075. run faster if you say N here.
  1076. See also <file:Documentation/i386/IO-APIC.txt>,
  1077. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  1078. <http://tldp.org/HOWTO/SMP-HOWTO.html>.
  1079. If you don't know what to do here, say N.
  1080. config SMP_ON_UP
  1081. bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
  1082. depends on EXPERIMENTAL
  1083. depends on SMP && !XIP_KERNEL
  1084. default y
  1085. help
  1086. SMP kernels contain instructions which fail on non-SMP processors.
  1087. Enabling this option allows the kernel to modify itself to make
  1088. these instructions safe. Disabling it allows about 1K of space
  1089. savings.
  1090. If you don't know what to do here, say Y.
  1091. config HAVE_ARM_SCU
  1092. bool
  1093. depends on SMP
  1094. help
  1095. This option enables support for the ARM system coherency unit
  1096. config HAVE_ARM_TWD
  1097. bool
  1098. depends on SMP
  1099. select TICK_ONESHOT
  1100. help
  1101. This options enables support for the ARM timer and watchdog unit
  1102. choice
  1103. prompt "Memory split"
  1104. default VMSPLIT_3G
  1105. help
  1106. Select the desired split between kernel and user memory.
  1107. If you are not absolutely sure what you are doing, leave this
  1108. option alone!
  1109. config VMSPLIT_3G
  1110. bool "3G/1G user/kernel split"
  1111. config VMSPLIT_2G
  1112. bool "2G/2G user/kernel split"
  1113. config VMSPLIT_1G
  1114. bool "1G/3G user/kernel split"
  1115. endchoice
  1116. config PAGE_OFFSET
  1117. hex
  1118. default 0x40000000 if VMSPLIT_1G
  1119. default 0x80000000 if VMSPLIT_2G
  1120. default 0xC0000000
  1121. config NR_CPUS
  1122. int "Maximum number of CPUs (2-32)"
  1123. range 2 32
  1124. depends on SMP
  1125. default "4"
  1126. config HOTPLUG_CPU
  1127. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  1128. depends on SMP && HOTPLUG && EXPERIMENTAL
  1129. depends on !ARCH_MSM
  1130. help
  1131. Say Y here to experiment with turning CPUs off and on. CPUs
  1132. can be controlled through /sys/devices/system/cpu.
  1133. config LOCAL_TIMERS
  1134. bool "Use local timer interrupts"
  1135. depends on SMP
  1136. default y
  1137. select HAVE_ARM_TWD if !ARCH_MSM_SCORPIONMP
  1138. help
  1139. Enable support for local timers on SMP platforms, rather then the
  1140. legacy IPI broadcast method. Local timers allows the system
  1141. accounting to be spread across the timer interval, preventing a
  1142. "thundering herd" at every timer tick.
  1143. source kernel/Kconfig.preempt
  1144. config HZ
  1145. int
  1146. default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
  1147. ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
  1148. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  1149. default AT91_TIMER_HZ if ARCH_AT91
  1150. default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
  1151. default 100
  1152. config THUMB2_KERNEL
  1153. bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
  1154. depends on CPU_V7 && !CPU_V6 && EXPERIMENTAL
  1155. select AEABI
  1156. select ARM_ASM_UNIFIED
  1157. help
  1158. By enabling this option, the kernel will be compiled in
  1159. Thumb-2 mode. A compiler/assembler that understand the unified
  1160. ARM-Thumb syntax is needed.
  1161. If unsure, say N.
  1162. config ARM_ASM_UNIFIED
  1163. bool
  1164. config AEABI
  1165. bool "Use the ARM EABI to compile the kernel"
  1166. help
  1167. This option allows for the kernel to be compiled using the latest
  1168. ARM ABI (aka EABI). This is only useful if you are using a user
  1169. space environment that is also compiled with EABI.
  1170. Since there are major incompatibilities between the legacy ABI and
  1171. EABI, especially with regard to structure member alignment, this
  1172. option also changes the kernel syscall calling convention to
  1173. disambiguate both ABIs and allow for backward compatibility support
  1174. (selected with CONFIG_OABI_COMPAT).
  1175. To use this you need GCC version 4.0.0 or later.
  1176. config OABI_COMPAT
  1177. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  1178. depends on AEABI && EXPERIMENTAL
  1179. default y
  1180. help
  1181. This option preserves the old syscall interface along with the
  1182. new (ARM EABI) one. It also provides a compatibility layer to
  1183. intercept syscalls that have structure arguments which layout
  1184. in memory differs between the legacy ABI and the new ARM EABI
  1185. (only for non "thumb" binaries). This option adds a tiny
  1186. overhead to all syscalls and produces a slightly larger kernel.
  1187. If you know you'll be using only pure EABI user space then you
  1188. can say N here. If this option is not selected and you attempt
  1189. to execute a legacy ABI binary then the result will be
  1190. UNPREDICTABLE (in fact it can be predicted that it won't work
  1191. at all). If in doubt say Y.
  1192. config ARCH_HAS_HOLES_MEMORYMODEL
  1193. bool
  1194. config ARCH_SPARSEMEM_ENABLE
  1195. bool
  1196. config ARCH_SPARSEMEM_DEFAULT
  1197. def_bool ARCH_SPARSEMEM_ENABLE
  1198. config ARCH_SELECT_MEMORY_MODEL
  1199. def_bool ARCH_SPARSEMEM_ENABLE
  1200. config HIGHMEM
  1201. bool "High Memory Support (EXPERIMENTAL)"
  1202. depends on MMU && EXPERIMENTAL
  1203. help
  1204. The address space of ARM processors is only 4 Gigabytes large
  1205. and it has to accommodate user address space, kernel address
  1206. space as well as some memory mapped IO. That means that, if you
  1207. have a large amount of physical memory and/or IO, not all of the
  1208. memory can be "permanently mapped" by the kernel. The physical
  1209. memory that is not permanently mapped is called "high memory".
  1210. Depending on the selected kernel/user memory split, minimum
  1211. vmalloc space and actual amount of RAM, you may not need this
  1212. option which should result in a slightly faster kernel.
  1213. If unsure, say n.
  1214. config HIGHPTE
  1215. bool "Allocate 2nd-level pagetables from highmem"
  1216. depends on HIGHMEM
  1217. depends on !OUTER_CACHE
  1218. config HW_PERF_EVENTS
  1219. bool "Enable hardware performance counter support for perf events"
  1220. depends on PERF_EVENTS && CPU_HAS_PMU
  1221. default y
  1222. help
  1223. Enable hardware performance counter support for perf events. If
  1224. disabled, perf events will use software events only.
  1225. source "mm/Kconfig"
  1226. config FORCE_MAX_ZONEORDER
  1227. int "Maximum zone order" if ARCH_SHMOBILE
  1228. range 11 64 if ARCH_SHMOBILE
  1229. default "9" if SA1111
  1230. default "11"
  1231. help
  1232. The kernel memory allocator divides physically contiguous memory
  1233. blocks into "zones", where each zone is a power of two number of
  1234. pages. This option selects the largest power of two that the kernel
  1235. keeps in the memory allocator. If you need to allocate very large
  1236. blocks of physically contiguous memory, then you may need to
  1237. increase this value.
  1238. This config option is actually maximum order plus one. For example,
  1239. a value of 11 means that the largest free memory block is 2^10 pages.
  1240. config LEDS
  1241. bool "Timer and CPU usage LEDs"
  1242. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  1243. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  1244. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  1245. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  1246. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  1247. ARCH_AT91 || ARCH_DAVINCI || \
  1248. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  1249. help
  1250. If you say Y here, the LEDs on your machine will be used
  1251. to provide useful information about your current system status.
  1252. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  1253. be able to select which LEDs are active using the options below. If
  1254. you are compiling a kernel for the EBSA-110 or the LART however, the
  1255. red LED will simply flash regularly to indicate that the system is
  1256. still functional. It is safe to say Y here if you have a CATS
  1257. system, but the driver will do nothing.
  1258. config LEDS_TIMER
  1259. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  1260. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1261. || MACH_OMAP_PERSEUS2
  1262. depends on LEDS
  1263. depends on !GENERIC_CLOCKEVENTS
  1264. default y if ARCH_EBSA110
  1265. help
  1266. If you say Y here, one of the system LEDs (the green one on the
  1267. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1268. will flash regularly to indicate that the system is still
  1269. operational. This is mainly useful to kernel hackers who are
  1270. debugging unstable kernels.
  1271. The LART uses the same LED for both Timer LED and CPU usage LED
  1272. functions. You may choose to use both, but the Timer LED function
  1273. will overrule the CPU usage LED.
  1274. config LEDS_CPU
  1275. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1276. !ARCH_OMAP) \
  1277. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1278. || MACH_OMAP_PERSEUS2
  1279. depends on LEDS
  1280. help
  1281. If you say Y here, the red LED will be used to give a good real
  1282. time indication of CPU usage, by lighting whenever the idle task
  1283. is not currently executing.
  1284. The LART uses the same LED for both Timer LED and CPU usage LED
  1285. functions. You may choose to use both, but the Timer LED function
  1286. will overrule the CPU usage LED.
  1287. config ALIGNMENT_TRAP
  1288. bool
  1289. depends on CPU_CP15_MMU
  1290. default y if !ARCH_EBSA110
  1291. select HAVE_PROC_CPU if PROC_FS
  1292. help
  1293. ARM processors cannot fetch/store information which is not
  1294. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1295. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1296. fetch/store instructions will be emulated in software if you say
  1297. here, which has a severe performance impact. This is necessary for
  1298. correct operation of some network protocols. With an IP-only
  1299. configuration it is safe to say N, otherwise say Y.
  1300. config UACCESS_WITH_MEMCPY
  1301. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1302. depends on MMU && EXPERIMENTAL
  1303. default y if CPU_FEROCEON
  1304. help
  1305. Implement faster copy_to_user and clear_user methods for CPU
  1306. cores where a 8-word STM instruction give significantly higher
  1307. memory write throughput than a sequence of individual 32bit stores.
  1308. A possible side effect is a slight increase in scheduling latency
  1309. between threads sharing the same address space if they invoke
  1310. such copy operations with large buffers.
  1311. However, if the CPU data cache is using a write-allocate mode,
  1312. this option is unlikely to provide any performance gain.
  1313. config SECCOMP
  1314. bool
  1315. prompt "Enable seccomp to safely compute untrusted bytecode"
  1316. ---help---
  1317. This kernel feature is useful for number crunching applications
  1318. that may need to compute untrusted bytecode during their
  1319. execution. By using pipes or other transports made available to
  1320. the process as file descriptors supporting the read/write
  1321. syscalls, it's possible to isolate those applications in
  1322. their own address space using seccomp. Once seccomp is
  1323. enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
  1324. and the task is only allowed to execute a few safe syscalls
  1325. defined by each seccomp mode.
  1326. config CC_STACKPROTECTOR
  1327. bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
  1328. depends on EXPERIMENTAL
  1329. help
  1330. This option turns on the -fstack-protector GCC feature. This
  1331. feature puts, at the beginning of functions, a canary value on
  1332. the stack just before the return address, and validates
  1333. the value just before actually returning. Stack based buffer
  1334. overflows (that need to overwrite this return address) now also
  1335. overwrite the canary, which gets detected and the attack is then
  1336. neutralized via a kernel panic.
  1337. This feature requires gcc version 4.2 or above.
  1338. config DEPRECATED_PARAM_STRUCT
  1339. bool "Provide old way to pass kernel parameters"
  1340. help
  1341. This was deprecated in 2001 and announced to live on for 5 years.
  1342. Some old boot loaders still use this way.
  1343. endmenu
  1344. menu "Boot options"
  1345. # Compressed boot loader in ROM. Yes, we really want to ask about
  1346. # TEXT and BSS so we preserve their values in the config files.
  1347. config ZBOOT_ROM_TEXT
  1348. hex "Compressed ROM boot loader base address"
  1349. default "0"
  1350. help
  1351. The physical address at which the ROM-able zImage is to be
  1352. placed in the target. Platforms which normally make use of
  1353. ROM-able zImage formats normally set this to a suitable
  1354. value in their defconfig file.
  1355. If ZBOOT_ROM is not enabled, this has no effect.
  1356. config ZBOOT_ROM_BSS
  1357. hex "Compressed ROM boot loader BSS address"
  1358. default "0"
  1359. help
  1360. The base address of an area of read/write memory in the target
  1361. for the ROM-able zImage which must be available while the
  1362. decompressor is running. It must be large enough to hold the
  1363. entire decompressed kernel plus an additional 128 KiB.
  1364. Platforms which normally make use of ROM-able zImage formats
  1365. normally set this to a suitable value in their defconfig file.
  1366. If ZBOOT_ROM is not enabled, this has no effect.
  1367. config ZBOOT_ROM
  1368. bool "Compressed boot loader in ROM/flash"
  1369. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1370. help
  1371. Say Y here if you intend to execute your compressed kernel image
  1372. (zImage) directly from ROM or flash. If unsure, say N.
  1373. config CMDLINE
  1374. string "Default kernel command string"
  1375. default ""
  1376. help
  1377. On some architectures (EBSA110 and CATS), there is currently no way
  1378. for the boot loader to pass arguments to the kernel. For these
  1379. architectures, you should supply some command-line options at build
  1380. time by entering them here. As a minimum, you should specify the
  1381. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1382. config CMDLINE_FORCE
  1383. bool "Always use the default kernel command string"
  1384. depends on CMDLINE != ""
  1385. help
  1386. Always use the default kernel command string, even if the boot
  1387. loader passes other arguments to the kernel.
  1388. This is useful if you cannot or don't want to change the
  1389. command-line options your boot loader passes to the kernel.
  1390. If unsure, say N.
  1391. config XIP_KERNEL
  1392. bool "Kernel Execute-In-Place from ROM"
  1393. depends on !ZBOOT_ROM
  1394. help
  1395. Execute-In-Place allows the kernel to run from non-volatile storage
  1396. directly addressable by the CPU, such as NOR flash. This saves RAM
  1397. space since the text section of the kernel is not loaded from flash
  1398. to RAM. Read-write sections, such as the data section and stack,
  1399. are still copied to RAM. The XIP kernel is not compressed since
  1400. it has to run directly from flash, so it will take more space to
  1401. store it. The flash address used to link the kernel object files,
  1402. and for storing it, is configuration dependent. Therefore, if you
  1403. say Y here, you must know the proper physical address where to
  1404. store the kernel image depending on your own flash memory usage.
  1405. Also note that the make target becomes "make xipImage" rather than
  1406. "make zImage" or "make Image". The final kernel binary to put in
  1407. ROM memory will be arch/arm/boot/xipImage.
  1408. If unsure, say N.
  1409. config XIP_PHYS_ADDR
  1410. hex "XIP Kernel Physical Location"
  1411. depends on XIP_KERNEL
  1412. default "0x00080000"
  1413. help
  1414. This is the physical address in your flash memory the kernel will
  1415. be linked for and stored to. This address is dependent on your
  1416. own flash usage.
  1417. config KEXEC
  1418. bool "Kexec system call (EXPERIMENTAL)"
  1419. depends on EXPERIMENTAL
  1420. help
  1421. kexec is a system call that implements the ability to shutdown your
  1422. current kernel, and to start another kernel. It is like a reboot
  1423. but it is independent of the system firmware. And like a reboot
  1424. you can start any kernel with it, not just Linux.
  1425. It is an ongoing process to be certain the hardware in a machine
  1426. is properly shutdown, so do not be surprised if this code does not
  1427. initially work for you. It may help to enable device hotplugging
  1428. support.
  1429. config ATAGS_PROC
  1430. bool "Export atags in procfs"
  1431. depends on KEXEC
  1432. default y
  1433. help
  1434. Should the atags used to boot the kernel be exported in an "atags"
  1435. file in procfs. Useful with kexec.
  1436. config CRASH_DUMP
  1437. bool "Build kdump crash kernel (EXPERIMENTAL)"
  1438. depends on EXPERIMENTAL
  1439. help
  1440. Generate crash dump after being started by kexec. This should
  1441. be normally only set in special crash dump kernels which are
  1442. loaded in the main kernel with kexec-tools into a specially
  1443. reserved region and then later executed after a crash by
  1444. kdump/kexec. The crash dump kernel must be compiled to a
  1445. memory address not used by the main kernel
  1446. For more details see Documentation/kdump/kdump.txt
  1447. config AUTO_ZRELADDR
  1448. bool "Auto calculation of the decompressed kernel image address"
  1449. depends on !ZBOOT_ROM && !ARCH_U300
  1450. help
  1451. ZRELADDR is the physical address where the decompressed kernel
  1452. image will be placed. If AUTO_ZRELADDR is selected, the address
  1453. will be determined at run-time by masking the current IP with
  1454. 0xf8000000. This assumes the zImage being placed in the first 128MB
  1455. from start of memory.
  1456. endmenu
  1457. menu "CPU Power Management"
  1458. if ARCH_HAS_CPUFREQ
  1459. source "drivers/cpufreq/Kconfig"
  1460. config CPU_FREQ_IMX
  1461. tristate "CPUfreq driver for i.MX CPUs"
  1462. depends on ARCH_MXC && CPU_FREQ
  1463. help
  1464. This enables the CPUfreq driver for i.MX CPUs.
  1465. config CPU_FREQ_SA1100
  1466. bool
  1467. config CPU_FREQ_SA1110
  1468. bool
  1469. config CPU_FREQ_INTEGRATOR
  1470. tristate "CPUfreq driver for ARM Integrator CPUs"
  1471. depends on ARCH_INTEGRATOR && CPU_FREQ
  1472. default y
  1473. help
  1474. This enables the CPUfreq driver for ARM Integrator CPUs.
  1475. For details, take a look at <file:Documentation/cpu-freq>.
  1476. If in doubt, say Y.
  1477. config CPU_FREQ_PXA
  1478. bool
  1479. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1480. default y
  1481. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1482. config CPU_FREQ_S3C64XX
  1483. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1484. depends on CPU_FREQ && CPU_S3C6410
  1485. config CPU_FREQ_S3C
  1486. bool
  1487. help
  1488. Internal configuration node for common cpufreq on Samsung SoC
  1489. config CPU_FREQ_S3C24XX
  1490. bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
  1491. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1492. select CPU_FREQ_S3C
  1493. help
  1494. This enables the CPUfreq driver for the Samsung S3C24XX family
  1495. of CPUs.
  1496. For details, take a look at <file:Documentation/cpu-freq>.
  1497. If in doubt, say N.
  1498. config CPU_FREQ_S3C24XX_PLL
  1499. bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
  1500. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1501. help
  1502. Compile in support for changing the PLL frequency from the
  1503. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1504. after a frequency change, so by default it is not enabled.
  1505. This also means that the PLL tables for the selected CPU(s) will
  1506. be built which may increase the size of the kernel image.
  1507. config CPU_FREQ_S3C24XX_DEBUG
  1508. bool "Debug CPUfreq Samsung driver core"
  1509. depends on CPU_FREQ_S3C24XX
  1510. help
  1511. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1512. config CPU_FREQ_S3C24XX_IODEBUG
  1513. bool "Debug CPUfreq Samsung driver IO timing"
  1514. depends on CPU_FREQ_S3C24XX
  1515. help
  1516. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1517. config CPU_FREQ_S3C24XX_DEBUGFS
  1518. bool "Export debugfs for CPUFreq"
  1519. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1520. help
  1521. Export status information via debugfs.
  1522. endif
  1523. source "drivers/cpuidle/Kconfig"
  1524. endmenu
  1525. menu "Floating point emulation"
  1526. comment "At least one emulation must be selected"
  1527. config FPE_NWFPE
  1528. bool "NWFPE math emulation"
  1529. depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
  1530. ---help---
  1531. Say Y to include the NWFPE floating point emulator in the kernel.
  1532. This is necessary to run most binaries. Linux does not currently
  1533. support floating point hardware so you need to say Y here even if
  1534. your machine has an FPA or floating point co-processor podule.
  1535. You may say N here if you are going to load the Acorn FPEmulator
  1536. early in the bootup.
  1537. config FPE_NWFPE_XP
  1538. bool "Support extended precision"
  1539. depends on FPE_NWFPE
  1540. help
  1541. Say Y to include 80-bit support in the kernel floating-point
  1542. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1543. Note that gcc does not generate 80-bit operations by default,
  1544. so in most cases this option only enlarges the size of the
  1545. floating point emulator without any good reason.
  1546. You almost surely want to say N here.
  1547. config FPE_FASTFPE
  1548. bool "FastFPE math emulation (EXPERIMENTAL)"
  1549. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1550. ---help---
  1551. Say Y here to include the FAST floating point emulator in the kernel.
  1552. This is an experimental much faster emulator which now also has full
  1553. precision for the mantissa. It does not support any exceptions.
  1554. It is very simple, and approximately 3-6 times faster than NWFPE.
  1555. It should be sufficient for most programs. It may be not suitable
  1556. for scientific calculations, but you have to check this for yourself.
  1557. If you do not feel you need a faster FP emulation you should better
  1558. choose NWFPE.
  1559. config VFP
  1560. bool "VFP-format floating point maths"
  1561. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1562. help
  1563. Say Y to include VFP support code in the kernel. This is needed
  1564. if your hardware includes a VFP unit.
  1565. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1566. release notes and additional status information.
  1567. Say N if your target does not have VFP hardware.
  1568. config VFPv3
  1569. bool
  1570. depends on VFP
  1571. default y if CPU_V7
  1572. config NEON
  1573. bool "Advanced SIMD (NEON) Extension support"
  1574. depends on VFPv3 && CPU_V7
  1575. help
  1576. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1577. Extension.
  1578. endmenu
  1579. menu "Userspace binary formats"
  1580. source "fs/Kconfig.binfmt"
  1581. config ARTHUR
  1582. tristate "RISC OS personality"
  1583. depends on !AEABI
  1584. help
  1585. Say Y here to include the kernel code necessary if you want to run
  1586. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1587. experimental; if this sounds frightening, say N and sleep in peace.
  1588. You can also say M here to compile this support as a module (which
  1589. will be called arthur).
  1590. endmenu
  1591. menu "Power management options"
  1592. source "kernel/power/Kconfig"
  1593. config ARCH_SUSPEND_POSSIBLE
  1594. def_bool y
  1595. endmenu
  1596. source "net/Kconfig"
  1597. source "drivers/Kconfig"
  1598. source "fs/Kconfig"
  1599. source "arch/arm/Kconfig.debug"
  1600. source "security/Kconfig"
  1601. source "crypto/Kconfig"
  1602. source "lib/Kconfig"