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