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