Kconfig 51 KB

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