Kconfig 59 KB

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  1. config ARM
  2. bool
  3. default y
  4. select HAVE_AOUT
  5. select HAVE_DMA_API_DEBUG
  6. select HAVE_IDE
  7. select HAVE_MEMBLOCK
  8. select RTC_LIB
  9. select SYS_SUPPORTS_APM_EMULATION
  10. select GENERIC_ATOMIC64 if (CPU_V6 || !CPU_32v6K || !AEABI)
  11. select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
  12. select HAVE_ARCH_KGDB
  13. select HAVE_KPROBES if !XIP_KERNEL
  14. select HAVE_KRETPROBES if (HAVE_KPROBES)
  15. select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  16. select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
  17. select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
  18. select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
  19. select HAVE_GENERIC_DMA_COHERENT
  20. select HAVE_KERNEL_GZIP
  21. select HAVE_KERNEL_LZO
  22. select HAVE_KERNEL_LZMA
  23. select HAVE_IRQ_WORK
  24. select HAVE_PERF_EVENTS
  25. select PERF_USE_VMALLOC
  26. select HAVE_REGS_AND_STACK_ACCESS_API
  27. select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
  28. select HAVE_C_RECORDMCOUNT
  29. select HAVE_GENERIC_HARDIRQS
  30. select HAVE_SPARSE_IRQ
  31. select GENERIC_IRQ_SHOW
  32. help
  33. The ARM series is a line of low-power-consumption RISC chip designs
  34. licensed by ARM Ltd and targeted at embedded applications and
  35. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  36. manufactured, but legacy ARM-based PC hardware remains popular in
  37. Europe. There is an ARM Linux project with a web page at
  38. <http://www.arm.linux.org.uk/>.
  39. config ARM_HAS_SG_CHAIN
  40. bool
  41. config HAVE_PWM
  42. bool
  43. config MIGHT_HAVE_PCI
  44. bool
  45. config SYS_SUPPORTS_APM_EMULATION
  46. bool
  47. config HAVE_SCHED_CLOCK
  48. bool
  49. config GENERIC_GPIO
  50. bool
  51. config ARCH_USES_GETTIMEOFFSET
  52. bool
  53. default n
  54. config GENERIC_CLOCKEVENTS
  55. bool
  56. config GENERIC_CLOCKEVENTS_BROADCAST
  57. bool
  58. depends on GENERIC_CLOCKEVENTS
  59. default y if SMP
  60. config KTIME_SCALAR
  61. bool
  62. default y
  63. config HAVE_TCM
  64. bool
  65. select GENERIC_ALLOCATOR
  66. config HAVE_PROC_CPU
  67. bool
  68. config NO_IOPORT
  69. bool
  70. config EISA
  71. bool
  72. ---help---
  73. The Extended Industry Standard Architecture (EISA) bus was
  74. developed as an open alternative to the IBM MicroChannel bus.
  75. The EISA bus provided some of the features of the IBM MicroChannel
  76. bus while maintaining backward compatibility with cards made for
  77. the older ISA bus. The EISA bus saw limited use between 1988 and
  78. 1995 when it was made obsolete by the PCI bus.
  79. Say Y here if you are building a kernel for an EISA-based machine.
  80. Otherwise, say N.
  81. config SBUS
  82. bool
  83. config MCA
  84. bool
  85. help
  86. MicroChannel Architecture is found in some IBM PS/2 machines and
  87. laptops. It is a bus system similar to PCI or ISA. See
  88. <file:Documentation/mca.txt> (and especially the web page given
  89. there) before attempting to build an MCA bus kernel.
  90. config STACKTRACE_SUPPORT
  91. bool
  92. default y
  93. config HAVE_LATENCYTOP_SUPPORT
  94. bool
  95. depends on !SMP
  96. default y
  97. config LOCKDEP_SUPPORT
  98. bool
  99. default y
  100. config TRACE_IRQFLAGS_SUPPORT
  101. bool
  102. default y
  103. config HARDIRQS_SW_RESEND
  104. bool
  105. default y
  106. config GENERIC_IRQ_PROBE
  107. bool
  108. default y
  109. config GENERIC_LOCKBREAK
  110. bool
  111. default y
  112. depends on SMP && PREEMPT
  113. config RWSEM_GENERIC_SPINLOCK
  114. bool
  115. default y
  116. config RWSEM_XCHGADD_ALGORITHM
  117. bool
  118. config ARCH_HAS_ILOG2_U32
  119. bool
  120. config ARCH_HAS_ILOG2_U64
  121. bool
  122. config ARCH_HAS_CPUFREQ
  123. bool
  124. help
  125. Internal node to signify that the ARCH has CPUFREQ support
  126. and that the relevant menu configurations are displayed for
  127. it.
  128. config ARCH_HAS_CPU_IDLE_WAIT
  129. def_bool y
  130. config GENERIC_HWEIGHT
  131. bool
  132. default y
  133. config GENERIC_CALIBRATE_DELAY
  134. bool
  135. default y
  136. config ARCH_MAY_HAVE_PC_FDC
  137. bool
  138. config ZONE_DMA
  139. bool
  140. config NEED_DMA_MAP_STATE
  141. def_bool y
  142. config GENERIC_ISA_DMA
  143. bool
  144. config FIQ
  145. bool
  146. config ARCH_MTD_XIP
  147. bool
  148. config VECTORS_BASE
  149. hex
  150. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  151. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  152. default 0x00000000
  153. help
  154. The base address of exception vectors.
  155. config ARM_PATCH_PHYS_VIRT
  156. bool "Patch physical to virtual translations at runtime (EXPERIMENTAL)"
  157. depends on EXPERIMENTAL
  158. depends on !XIP_KERNEL && MMU
  159. depends on !ARCH_REALVIEW || !SPARSEMEM
  160. help
  161. Patch phys-to-virt and virt-to-phys translation functions at
  162. boot and module load time according to the position of the
  163. kernel in system memory.
  164. This can only be used with non-XIP MMU kernels where the base
  165. of physical memory is at a 16MB boundary, or theoretically 64K
  166. for the MSM machine class.
  167. config ARM_PATCH_PHYS_VIRT_16BIT
  168. def_bool y
  169. depends on ARM_PATCH_PHYS_VIRT && ARCH_MSM
  170. help
  171. This option extends the physical to virtual translation patching
  172. to allow physical memory down to a theoretical minimum of 64K
  173. boundaries.
  174. source "init/Kconfig"
  175. source "kernel/Kconfig.freezer"
  176. menu "System Type"
  177. config MMU
  178. bool "MMU-based Paged Memory Management Support"
  179. default y
  180. help
  181. Select if you want MMU-based virtualised addressing space
  182. support by paged memory management. If unsure, say 'Y'.
  183. #
  184. # The "ARM system type" choice list is ordered alphabetically by option
  185. # text. Please add new entries in the option alphabetic order.
  186. #
  187. choice
  188. prompt "ARM system type"
  189. default ARCH_VERSATILE
  190. config ARCH_INTEGRATOR
  191. bool "ARM Ltd. Integrator family"
  192. select ARM_AMBA
  193. select ARCH_HAS_CPUFREQ
  194. select CLKDEV_LOOKUP
  195. select HAVE_MACH_CLKDEV
  196. select ICST
  197. select GENERIC_CLOCKEVENTS
  198. select PLAT_VERSATILE
  199. select PLAT_VERSATILE_FPGA_IRQ
  200. help
  201. Support for ARM's Integrator platform.
  202. config ARCH_REALVIEW
  203. bool "ARM Ltd. RealView family"
  204. select ARM_AMBA
  205. select CLKDEV_LOOKUP
  206. select HAVE_MACH_CLKDEV
  207. select ICST
  208. select GENERIC_CLOCKEVENTS
  209. select ARCH_WANT_OPTIONAL_GPIOLIB
  210. select PLAT_VERSATILE
  211. select PLAT_VERSATILE_CLCD
  212. select ARM_TIMER_SP804
  213. select GPIO_PL061 if GPIOLIB
  214. help
  215. This enables support for ARM Ltd RealView boards.
  216. config ARCH_VERSATILE
  217. bool "ARM Ltd. Versatile family"
  218. select ARM_AMBA
  219. select ARM_VIC
  220. select CLKDEV_LOOKUP
  221. select HAVE_MACH_CLKDEV
  222. select ICST
  223. select GENERIC_CLOCKEVENTS
  224. select ARCH_WANT_OPTIONAL_GPIOLIB
  225. select PLAT_VERSATILE
  226. select PLAT_VERSATILE_CLCD
  227. select PLAT_VERSATILE_FPGA_IRQ
  228. select ARM_TIMER_SP804
  229. help
  230. This enables support for ARM Ltd Versatile board.
  231. config ARCH_VEXPRESS
  232. bool "ARM Ltd. Versatile Express family"
  233. select ARCH_WANT_OPTIONAL_GPIOLIB
  234. select ARM_AMBA
  235. select ARM_TIMER_SP804
  236. select CLKDEV_LOOKUP
  237. select HAVE_MACH_CLKDEV
  238. select GENERIC_CLOCKEVENTS
  239. select HAVE_CLK
  240. select HAVE_PATA_PLATFORM
  241. select ICST
  242. select PLAT_VERSATILE
  243. select PLAT_VERSATILE_CLCD
  244. help
  245. This enables support for the ARM Ltd Versatile Express boards.
  246. config ARCH_AT91
  247. bool "Atmel AT91"
  248. select ARCH_REQUIRE_GPIOLIB
  249. select HAVE_CLK
  250. select CLKDEV_LOOKUP
  251. select ARM_PATCH_PHYS_VIRT if MMU
  252. help
  253. This enables support for systems based on the Atmel AT91RM9200,
  254. AT91SAM9 and AT91CAP9 processors.
  255. config ARCH_BCMRING
  256. bool "Broadcom BCMRING"
  257. depends on MMU
  258. select CPU_V6
  259. select ARM_AMBA
  260. select ARM_TIMER_SP804
  261. select CLKDEV_LOOKUP
  262. select GENERIC_CLOCKEVENTS
  263. select ARCH_WANT_OPTIONAL_GPIOLIB
  264. help
  265. Support for Broadcom's BCMRing platform.
  266. config ARCH_CLPS711X
  267. bool "Cirrus Logic CLPS711x/EP721x-based"
  268. select CPU_ARM720T
  269. select ARCH_USES_GETTIMEOFFSET
  270. help
  271. Support for Cirrus Logic 711x/721x based boards.
  272. config ARCH_CNS3XXX
  273. bool "Cavium Networks CNS3XXX family"
  274. select CPU_V6K
  275. select GENERIC_CLOCKEVENTS
  276. select ARM_GIC
  277. select MIGHT_HAVE_PCI
  278. select PCI_DOMAINS if PCI
  279. help
  280. Support for Cavium Networks CNS3XXX platform.
  281. config ARCH_GEMINI
  282. bool "Cortina Systems Gemini"
  283. select CPU_FA526
  284. select ARCH_REQUIRE_GPIOLIB
  285. select ARCH_USES_GETTIMEOFFSET
  286. help
  287. Support for the Cortina Systems Gemini family SoCs
  288. config ARCH_PRIMA2
  289. bool "CSR SiRFSoC PRIMA2 ARM Cortex A9 Platform"
  290. select CPU_V7
  291. select GENERIC_TIME
  292. select NO_IOPORT
  293. select GENERIC_CLOCKEVENTS
  294. select CLKDEV_LOOKUP
  295. select GENERIC_IRQ_CHIP
  296. select USE_OF
  297. select ZONE_DMA
  298. help
  299. Support for CSR SiRFSoC ARM Cortex A9 Platform
  300. config ARCH_EBSA110
  301. bool "EBSA-110"
  302. select CPU_SA110
  303. select ISA
  304. select NO_IOPORT
  305. select ARCH_USES_GETTIMEOFFSET
  306. help
  307. This is an evaluation board for the StrongARM processor available
  308. from Digital. It has limited hardware on-board, including an
  309. Ethernet interface, two PCMCIA sockets, two serial ports and a
  310. parallel port.
  311. config ARCH_EP93XX
  312. bool "EP93xx-based"
  313. select CPU_ARM920T
  314. select ARM_AMBA
  315. select ARM_VIC
  316. select CLKDEV_LOOKUP
  317. select ARCH_REQUIRE_GPIOLIB
  318. select ARCH_HAS_HOLES_MEMORYMODEL
  319. select ARCH_USES_GETTIMEOFFSET
  320. help
  321. This enables support for the Cirrus EP93xx series of CPUs.
  322. config ARCH_FOOTBRIDGE
  323. bool "FootBridge"
  324. select CPU_SA110
  325. select FOOTBRIDGE
  326. select GENERIC_CLOCKEVENTS
  327. help
  328. Support for systems based on the DC21285 companion chip
  329. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  330. config ARCH_MXC
  331. bool "Freescale MXC/iMX-based"
  332. select GENERIC_CLOCKEVENTS
  333. select ARCH_REQUIRE_GPIOLIB
  334. select CLKDEV_LOOKUP
  335. select CLKSRC_MMIO
  336. select GENERIC_IRQ_CHIP
  337. select HAVE_SCHED_CLOCK
  338. help
  339. Support for Freescale MXC/iMX-based family of processors
  340. config ARCH_MXS
  341. bool "Freescale MXS-based"
  342. select GENERIC_CLOCKEVENTS
  343. select ARCH_REQUIRE_GPIOLIB
  344. select CLKDEV_LOOKUP
  345. select CLKSRC_MMIO
  346. help
  347. Support for Freescale MXS-based family of processors
  348. config ARCH_NETX
  349. bool "Hilscher NetX based"
  350. select CLKSRC_MMIO
  351. select CPU_ARM926T
  352. select ARM_VIC
  353. select GENERIC_CLOCKEVENTS
  354. help
  355. This enables support for systems based on the Hilscher NetX Soc
  356. config ARCH_H720X
  357. bool "Hynix HMS720x-based"
  358. select CPU_ARM720T
  359. select ISA_DMA_API
  360. select ARCH_USES_GETTIMEOFFSET
  361. help
  362. This enables support for systems based on the Hynix HMS720x
  363. config ARCH_IOP13XX
  364. bool "IOP13xx-based"
  365. depends on MMU
  366. select CPU_XSC3
  367. select PLAT_IOP
  368. select PCI
  369. select ARCH_SUPPORTS_MSI
  370. select VMSPLIT_1G
  371. help
  372. Support for Intel's IOP13XX (XScale) family of processors.
  373. config ARCH_IOP32X
  374. bool "IOP32x-based"
  375. depends on MMU
  376. select CPU_XSCALE
  377. select PLAT_IOP
  378. select PCI
  379. select ARCH_REQUIRE_GPIOLIB
  380. help
  381. Support for Intel's 80219 and IOP32X (XScale) family of
  382. processors.
  383. config ARCH_IOP33X
  384. bool "IOP33x-based"
  385. depends on MMU
  386. select CPU_XSCALE
  387. select PLAT_IOP
  388. select PCI
  389. select ARCH_REQUIRE_GPIOLIB
  390. help
  391. Support for Intel's IOP33X (XScale) family of processors.
  392. config ARCH_IXP23XX
  393. bool "IXP23XX-based"
  394. depends on MMU
  395. select CPU_XSC3
  396. select PCI
  397. select ARCH_USES_GETTIMEOFFSET
  398. help
  399. Support for Intel's IXP23xx (XScale) family of processors.
  400. config ARCH_IXP2000
  401. bool "IXP2400/2800-based"
  402. depends on MMU
  403. select CPU_XSCALE
  404. select PCI
  405. select ARCH_USES_GETTIMEOFFSET
  406. help
  407. Support for Intel's IXP2400/2800 (XScale) family of processors.
  408. config ARCH_IXP4XX
  409. bool "IXP4xx-based"
  410. depends on MMU
  411. select CLKSRC_MMIO
  412. select CPU_XSCALE
  413. select GENERIC_GPIO
  414. select GENERIC_CLOCKEVENTS
  415. select HAVE_SCHED_CLOCK
  416. select MIGHT_HAVE_PCI
  417. select DMABOUNCE if PCI
  418. help
  419. Support for Intel's IXP4XX (XScale) family of processors.
  420. config ARCH_DOVE
  421. bool "Marvell Dove"
  422. select CPU_V7
  423. select PCI
  424. select ARCH_REQUIRE_GPIOLIB
  425. select GENERIC_CLOCKEVENTS
  426. select PLAT_ORION
  427. help
  428. Support for the Marvell Dove SoC 88AP510
  429. config ARCH_KIRKWOOD
  430. bool "Marvell Kirkwood"
  431. select CPU_FEROCEON
  432. select PCI
  433. select ARCH_REQUIRE_GPIOLIB
  434. select GENERIC_CLOCKEVENTS
  435. select PLAT_ORION
  436. help
  437. Support for the following Marvell Kirkwood series SoCs:
  438. 88F6180, 88F6192 and 88F6281.
  439. config ARCH_LPC32XX
  440. bool "NXP LPC32XX"
  441. select CLKSRC_MMIO
  442. select CPU_ARM926T
  443. select ARCH_REQUIRE_GPIOLIB
  444. select HAVE_IDE
  445. select ARM_AMBA
  446. select USB_ARCH_HAS_OHCI
  447. select CLKDEV_LOOKUP
  448. select GENERIC_TIME
  449. select GENERIC_CLOCKEVENTS
  450. help
  451. Support for the NXP LPC32XX family of processors
  452. config ARCH_MV78XX0
  453. bool "Marvell MV78xx0"
  454. select CPU_FEROCEON
  455. select PCI
  456. select ARCH_REQUIRE_GPIOLIB
  457. select GENERIC_CLOCKEVENTS
  458. select PLAT_ORION
  459. help
  460. Support for the following Marvell MV78xx0 series SoCs:
  461. MV781x0, MV782x0.
  462. config ARCH_ORION5X
  463. bool "Marvell Orion"
  464. depends on MMU
  465. select CPU_FEROCEON
  466. select PCI
  467. select ARCH_REQUIRE_GPIOLIB
  468. select GENERIC_CLOCKEVENTS
  469. select PLAT_ORION
  470. help
  471. Support for the following Marvell Orion 5x series SoCs:
  472. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  473. Orion-2 (5281), Orion-1-90 (6183).
  474. config ARCH_MMP
  475. bool "Marvell PXA168/910/MMP2"
  476. depends on MMU
  477. select ARCH_REQUIRE_GPIOLIB
  478. select CLKDEV_LOOKUP
  479. select GENERIC_CLOCKEVENTS
  480. select HAVE_SCHED_CLOCK
  481. select TICK_ONESHOT
  482. select PLAT_PXA
  483. select SPARSE_IRQ
  484. help
  485. Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
  486. config ARCH_KS8695
  487. bool "Micrel/Kendin KS8695"
  488. select CPU_ARM922T
  489. select ARCH_REQUIRE_GPIOLIB
  490. select ARCH_USES_GETTIMEOFFSET
  491. help
  492. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  493. System-on-Chip devices.
  494. config ARCH_W90X900
  495. bool "Nuvoton W90X900 CPU"
  496. select CPU_ARM926T
  497. select ARCH_REQUIRE_GPIOLIB
  498. select CLKDEV_LOOKUP
  499. select CLKSRC_MMIO
  500. select GENERIC_CLOCKEVENTS
  501. help
  502. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  503. At present, the w90x900 has been renamed nuc900, regarding
  504. the ARM series product line, you can login the following
  505. link address to know more.
  506. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  507. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  508. config ARCH_NUC93X
  509. bool "Nuvoton NUC93X CPU"
  510. select CPU_ARM926T
  511. select CLKDEV_LOOKUP
  512. help
  513. Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
  514. low-power and high performance MPEG-4/JPEG multimedia controller chip.
  515. config ARCH_TEGRA
  516. bool "NVIDIA Tegra"
  517. select CLKDEV_LOOKUP
  518. select CLKSRC_MMIO
  519. select GENERIC_TIME
  520. select GENERIC_CLOCKEVENTS
  521. select GENERIC_GPIO
  522. select HAVE_CLK
  523. select HAVE_SCHED_CLOCK
  524. select ARCH_HAS_CPUFREQ
  525. help
  526. This enables support for NVIDIA Tegra based systems (Tegra APX,
  527. Tegra 6xx and Tegra 2 series).
  528. config ARCH_PNX4008
  529. bool "Philips Nexperia PNX4008 Mobile"
  530. select CPU_ARM926T
  531. select CLKDEV_LOOKUP
  532. select ARCH_USES_GETTIMEOFFSET
  533. help
  534. This enables support for Philips PNX4008 mobile platform.
  535. config ARCH_PXA
  536. bool "PXA2xx/PXA3xx-based"
  537. depends on MMU
  538. select ARCH_MTD_XIP
  539. select ARCH_HAS_CPUFREQ
  540. select CLKDEV_LOOKUP
  541. select CLKSRC_MMIO
  542. select ARCH_REQUIRE_GPIOLIB
  543. select GENERIC_CLOCKEVENTS
  544. select HAVE_SCHED_CLOCK
  545. select TICK_ONESHOT
  546. select PLAT_PXA
  547. select SPARSE_IRQ
  548. select AUTO_ZRELADDR
  549. select MULTI_IRQ_HANDLER
  550. help
  551. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  552. config ARCH_MSM
  553. bool "Qualcomm MSM"
  554. select HAVE_CLK
  555. select GENERIC_CLOCKEVENTS
  556. select ARCH_REQUIRE_GPIOLIB
  557. select CLKDEV_LOOKUP
  558. help
  559. Support for Qualcomm MSM/QSD based systems. This runs on the
  560. apps processor of the MSM/QSD and depends on a shared memory
  561. interface to the modem processor which runs the baseband
  562. stack and controls some vital subsystems
  563. (clock and power control, etc).
  564. config ARCH_SHMOBILE
  565. bool "Renesas SH-Mobile / R-Mobile"
  566. select HAVE_CLK
  567. select CLKDEV_LOOKUP
  568. select HAVE_MACH_CLKDEV
  569. select GENERIC_CLOCKEVENTS
  570. select NO_IOPORT
  571. select SPARSE_IRQ
  572. select MULTI_IRQ_HANDLER
  573. select PM_GENERIC_DOMAINS if PM
  574. help
  575. Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
  576. config ARCH_RPC
  577. bool "RiscPC"
  578. select ARCH_ACORN
  579. select FIQ
  580. select TIMER_ACORN
  581. select ARCH_MAY_HAVE_PC_FDC
  582. select HAVE_PATA_PLATFORM
  583. select ISA_DMA_API
  584. select NO_IOPORT
  585. select ARCH_SPARSEMEM_ENABLE
  586. select ARCH_USES_GETTIMEOFFSET
  587. help
  588. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  589. CD-ROM interface, serial and parallel port, and the floppy drive.
  590. config ARCH_SA1100
  591. bool "SA1100-based"
  592. select CLKSRC_MMIO
  593. select CPU_SA1100
  594. select ISA
  595. select ARCH_SPARSEMEM_ENABLE
  596. select ARCH_MTD_XIP
  597. select ARCH_HAS_CPUFREQ
  598. select CPU_FREQ
  599. select GENERIC_CLOCKEVENTS
  600. select HAVE_CLK
  601. select HAVE_SCHED_CLOCK
  602. select TICK_ONESHOT
  603. select ARCH_REQUIRE_GPIOLIB
  604. help
  605. Support for StrongARM 11x0 based boards.
  606. config ARCH_S3C2410
  607. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
  608. select GENERIC_GPIO
  609. select ARCH_HAS_CPUFREQ
  610. select HAVE_CLK
  611. select CLKDEV_LOOKUP
  612. select ARCH_USES_GETTIMEOFFSET
  613. select HAVE_S3C2410_I2C if I2C
  614. help
  615. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  616. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  617. the Samsung SMDK2410 development board (and derivatives).
  618. Note, the S3C2416 and the S3C2450 are so close that they even share
  619. the same SoC ID code. This means that there is no separate machine
  620. directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
  621. config ARCH_S3C64XX
  622. bool "Samsung S3C64XX"
  623. select PLAT_SAMSUNG
  624. select CPU_V6
  625. select ARM_VIC
  626. select HAVE_CLK
  627. select CLKDEV_LOOKUP
  628. select NO_IOPORT
  629. select ARCH_USES_GETTIMEOFFSET
  630. select ARCH_HAS_CPUFREQ
  631. select ARCH_REQUIRE_GPIOLIB
  632. select SAMSUNG_CLKSRC
  633. select SAMSUNG_IRQ_VIC_TIMER
  634. select SAMSUNG_IRQ_UART
  635. select S3C_GPIO_TRACK
  636. select S3C_GPIO_PULL_UPDOWN
  637. select S3C_GPIO_CFG_S3C24XX
  638. select S3C_GPIO_CFG_S3C64XX
  639. select S3C_DEV_NAND
  640. select USB_ARCH_HAS_OHCI
  641. select SAMSUNG_GPIOLIB_4BIT
  642. select HAVE_S3C2410_I2C if I2C
  643. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  644. help
  645. Samsung S3C64XX series based systems
  646. config ARCH_S5P64X0
  647. bool "Samsung S5P6440 S5P6450"
  648. select CPU_V6
  649. select GENERIC_GPIO
  650. select HAVE_CLK
  651. select CLKDEV_LOOKUP
  652. select CLKSRC_MMIO
  653. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  654. select GENERIC_CLOCKEVENTS
  655. select HAVE_SCHED_CLOCK
  656. select HAVE_S3C2410_I2C if I2C
  657. select HAVE_S3C_RTC if RTC_CLASS
  658. help
  659. Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
  660. SMDK6450.
  661. config ARCH_S5PC100
  662. bool "Samsung S5PC100"
  663. select GENERIC_GPIO
  664. select HAVE_CLK
  665. select CLKDEV_LOOKUP
  666. select CPU_V7
  667. select ARM_L1_CACHE_SHIFT_6
  668. select ARCH_USES_GETTIMEOFFSET
  669. select HAVE_S3C2410_I2C if I2C
  670. select HAVE_S3C_RTC if RTC_CLASS
  671. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  672. help
  673. Samsung S5PC100 series based systems
  674. config ARCH_S5PV210
  675. bool "Samsung S5PV210/S5PC110"
  676. select CPU_V7
  677. select ARCH_SPARSEMEM_ENABLE
  678. select ARCH_HAS_HOLES_MEMORYMODEL
  679. select GENERIC_GPIO
  680. select HAVE_CLK
  681. select CLKDEV_LOOKUP
  682. select CLKSRC_MMIO
  683. select ARM_L1_CACHE_SHIFT_6
  684. select ARCH_HAS_CPUFREQ
  685. select GENERIC_CLOCKEVENTS
  686. select HAVE_SCHED_CLOCK
  687. select HAVE_S3C2410_I2C if I2C
  688. select HAVE_S3C_RTC if RTC_CLASS
  689. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  690. help
  691. Samsung S5PV210/S5PC110 series based systems
  692. config ARCH_EXYNOS4
  693. bool "Samsung EXYNOS4"
  694. select CPU_V7
  695. select ARCH_SPARSEMEM_ENABLE
  696. select ARCH_HAS_HOLES_MEMORYMODEL
  697. select GENERIC_GPIO
  698. select HAVE_CLK
  699. select CLKDEV_LOOKUP
  700. select ARCH_HAS_CPUFREQ
  701. select GENERIC_CLOCKEVENTS
  702. select HAVE_S3C_RTC if RTC_CLASS
  703. select HAVE_S3C2410_I2C if I2C
  704. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  705. help
  706. Samsung EXYNOS4 series based systems
  707. config ARCH_SHARK
  708. bool "Shark"
  709. select CPU_SA110
  710. select ISA
  711. select ISA_DMA
  712. select ZONE_DMA
  713. select PCI
  714. select ARCH_USES_GETTIMEOFFSET
  715. help
  716. Support for the StrongARM based Digital DNARD machine, also known
  717. as "Shark" (<http://www.shark-linux.de/shark.html>).
  718. config ARCH_TCC_926
  719. bool "Telechips TCC ARM926-based systems"
  720. select CLKSRC_MMIO
  721. select CPU_ARM926T
  722. select HAVE_CLK
  723. select CLKDEV_LOOKUP
  724. select GENERIC_CLOCKEVENTS
  725. help
  726. Support for Telechips TCC ARM926-based systems.
  727. config ARCH_U300
  728. bool "ST-Ericsson U300 Series"
  729. depends on MMU
  730. select CLKSRC_MMIO
  731. select CPU_ARM926T
  732. select HAVE_SCHED_CLOCK
  733. select HAVE_TCM
  734. select ARM_AMBA
  735. select ARM_VIC
  736. select GENERIC_CLOCKEVENTS
  737. select CLKDEV_LOOKUP
  738. select HAVE_MACH_CLKDEV
  739. select GENERIC_GPIO
  740. help
  741. Support for ST-Ericsson U300 series mobile platforms.
  742. config ARCH_U8500
  743. bool "ST-Ericsson U8500 Series"
  744. select CPU_V7
  745. select ARM_AMBA
  746. select GENERIC_CLOCKEVENTS
  747. select CLKDEV_LOOKUP
  748. select ARCH_REQUIRE_GPIOLIB
  749. select ARCH_HAS_CPUFREQ
  750. help
  751. Support for ST-Ericsson's Ux500 architecture
  752. config ARCH_NOMADIK
  753. bool "STMicroelectronics Nomadik"
  754. select ARM_AMBA
  755. select ARM_VIC
  756. select CPU_ARM926T
  757. select CLKDEV_LOOKUP
  758. select GENERIC_CLOCKEVENTS
  759. select ARCH_REQUIRE_GPIOLIB
  760. help
  761. Support for the Nomadik platform by ST-Ericsson
  762. config ARCH_DAVINCI
  763. bool "TI DaVinci"
  764. select GENERIC_CLOCKEVENTS
  765. select ARCH_REQUIRE_GPIOLIB
  766. select ZONE_DMA
  767. select HAVE_IDE
  768. select CLKDEV_LOOKUP
  769. select GENERIC_ALLOCATOR
  770. select GENERIC_IRQ_CHIP
  771. select ARCH_HAS_HOLES_MEMORYMODEL
  772. help
  773. Support for TI's DaVinci platform.
  774. config ARCH_OMAP
  775. bool "TI OMAP"
  776. select HAVE_CLK
  777. select ARCH_REQUIRE_GPIOLIB
  778. select ARCH_HAS_CPUFREQ
  779. select CLKSRC_MMIO
  780. select GENERIC_CLOCKEVENTS
  781. select HAVE_SCHED_CLOCK
  782. select ARCH_HAS_HOLES_MEMORYMODEL
  783. help
  784. Support for TI's OMAP platform (OMAP1/2/3/4).
  785. config PLAT_SPEAR
  786. bool "ST SPEAr"
  787. select ARM_AMBA
  788. select ARCH_REQUIRE_GPIOLIB
  789. select CLKDEV_LOOKUP
  790. select CLKSRC_MMIO
  791. select GENERIC_CLOCKEVENTS
  792. select HAVE_CLK
  793. help
  794. Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
  795. config ARCH_VT8500
  796. bool "VIA/WonderMedia 85xx"
  797. select CPU_ARM926T
  798. select GENERIC_GPIO
  799. select ARCH_HAS_CPUFREQ
  800. select GENERIC_CLOCKEVENTS
  801. select ARCH_REQUIRE_GPIOLIB
  802. select HAVE_PWM
  803. help
  804. Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
  805. config ARCH_ZYNQ
  806. bool "Xilinx Zynq ARM Cortex A9 Platform"
  807. select CPU_V7
  808. select GENERIC_TIME
  809. select GENERIC_CLOCKEVENTS
  810. select CLKDEV_LOOKUP
  811. select ARM_GIC
  812. select ARM_AMBA
  813. select ICST
  814. select USE_OF
  815. help
  816. Support for Xilinx Zynq ARM Cortex A9 Platform
  817. endchoice
  818. #
  819. # This is sorted alphabetically by mach-* pathname. However, plat-*
  820. # Kconfigs may be included either alphabetically (according to the
  821. # plat- suffix) or along side the corresponding mach-* source.
  822. #
  823. source "arch/arm/mach-at91/Kconfig"
  824. source "arch/arm/mach-bcmring/Kconfig"
  825. source "arch/arm/mach-clps711x/Kconfig"
  826. source "arch/arm/mach-cns3xxx/Kconfig"
  827. source "arch/arm/mach-davinci/Kconfig"
  828. source "arch/arm/mach-dove/Kconfig"
  829. source "arch/arm/mach-ep93xx/Kconfig"
  830. source "arch/arm/mach-footbridge/Kconfig"
  831. source "arch/arm/mach-gemini/Kconfig"
  832. source "arch/arm/mach-h720x/Kconfig"
  833. source "arch/arm/mach-integrator/Kconfig"
  834. source "arch/arm/mach-iop32x/Kconfig"
  835. source "arch/arm/mach-iop33x/Kconfig"
  836. source "arch/arm/mach-iop13xx/Kconfig"
  837. source "arch/arm/mach-ixp4xx/Kconfig"
  838. source "arch/arm/mach-ixp2000/Kconfig"
  839. source "arch/arm/mach-ixp23xx/Kconfig"
  840. source "arch/arm/mach-kirkwood/Kconfig"
  841. source "arch/arm/mach-ks8695/Kconfig"
  842. source "arch/arm/mach-lpc32xx/Kconfig"
  843. source "arch/arm/mach-msm/Kconfig"
  844. source "arch/arm/mach-mv78xx0/Kconfig"
  845. source "arch/arm/plat-mxc/Kconfig"
  846. source "arch/arm/mach-mxs/Kconfig"
  847. source "arch/arm/mach-netx/Kconfig"
  848. source "arch/arm/mach-nomadik/Kconfig"
  849. source "arch/arm/plat-nomadik/Kconfig"
  850. source "arch/arm/mach-nuc93x/Kconfig"
  851. source "arch/arm/plat-omap/Kconfig"
  852. source "arch/arm/mach-omap1/Kconfig"
  853. source "arch/arm/mach-omap2/Kconfig"
  854. source "arch/arm/mach-orion5x/Kconfig"
  855. source "arch/arm/mach-pxa/Kconfig"
  856. source "arch/arm/plat-pxa/Kconfig"
  857. source "arch/arm/mach-mmp/Kconfig"
  858. source "arch/arm/mach-realview/Kconfig"
  859. source "arch/arm/mach-sa1100/Kconfig"
  860. source "arch/arm/plat-samsung/Kconfig"
  861. source "arch/arm/plat-s3c24xx/Kconfig"
  862. source "arch/arm/plat-s5p/Kconfig"
  863. source "arch/arm/plat-spear/Kconfig"
  864. source "arch/arm/plat-tcc/Kconfig"
  865. if ARCH_S3C2410
  866. source "arch/arm/mach-s3c2410/Kconfig"
  867. source "arch/arm/mach-s3c2412/Kconfig"
  868. source "arch/arm/mach-s3c2416/Kconfig"
  869. source "arch/arm/mach-s3c2440/Kconfig"
  870. source "arch/arm/mach-s3c2443/Kconfig"
  871. endif
  872. if ARCH_S3C64XX
  873. source "arch/arm/mach-s3c64xx/Kconfig"
  874. endif
  875. source "arch/arm/mach-s5p64x0/Kconfig"
  876. source "arch/arm/mach-s5pc100/Kconfig"
  877. source "arch/arm/mach-s5pv210/Kconfig"
  878. source "arch/arm/mach-exynos4/Kconfig"
  879. source "arch/arm/mach-shmobile/Kconfig"
  880. source "arch/arm/mach-tegra/Kconfig"
  881. source "arch/arm/mach-u300/Kconfig"
  882. source "arch/arm/mach-ux500/Kconfig"
  883. source "arch/arm/mach-versatile/Kconfig"
  884. source "arch/arm/mach-vexpress/Kconfig"
  885. source "arch/arm/plat-versatile/Kconfig"
  886. source "arch/arm/mach-vt8500/Kconfig"
  887. source "arch/arm/mach-w90x900/Kconfig"
  888. # Definitions to make life easier
  889. config ARCH_ACORN
  890. bool
  891. config PLAT_IOP
  892. bool
  893. select GENERIC_CLOCKEVENTS
  894. select HAVE_SCHED_CLOCK
  895. config PLAT_ORION
  896. bool
  897. select CLKSRC_MMIO
  898. select GENERIC_IRQ_CHIP
  899. select HAVE_SCHED_CLOCK
  900. config PLAT_PXA
  901. bool
  902. config PLAT_VERSATILE
  903. bool
  904. config ARM_TIMER_SP804
  905. bool
  906. select CLKSRC_MMIO
  907. source arch/arm/mm/Kconfig
  908. config IWMMXT
  909. bool "Enable iWMMXt support"
  910. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
  911. default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
  912. help
  913. Enable support for iWMMXt context switching at run time if
  914. running on a CPU that supports it.
  915. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  916. config XSCALE_PMU
  917. bool
  918. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  919. default y
  920. config CPU_HAS_PMU
  921. depends on (CPU_V6 || CPU_V6K || CPU_V7 || XSCALE_PMU) && \
  922. (!ARCH_OMAP3 || OMAP3_EMU)
  923. default y
  924. bool
  925. config MULTI_IRQ_HANDLER
  926. bool
  927. help
  928. Allow each machine to specify it's own IRQ handler at run time.
  929. if !MMU
  930. source "arch/arm/Kconfig-nommu"
  931. endif
  932. config ARM_ERRATA_411920
  933. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  934. depends on CPU_V6 || CPU_V6K
  935. help
  936. Invalidation of the Instruction Cache operation can
  937. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  938. It does not affect the MPCore. This option enables the ARM Ltd.
  939. recommended workaround.
  940. config ARM_ERRATA_430973
  941. bool "ARM errata: Stale prediction on replaced interworking branch"
  942. depends on CPU_V7
  943. help
  944. This option enables the workaround for the 430973 Cortex-A8
  945. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  946. interworking branch is replaced with another code sequence at the
  947. same virtual address, whether due to self-modifying code or virtual
  948. to physical address re-mapping, Cortex-A8 does not recover from the
  949. stale interworking branch prediction. This results in Cortex-A8
  950. executing the new code sequence in the incorrect ARM or Thumb state.
  951. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  952. and also flushes the branch target cache at every context switch.
  953. Note that setting specific bits in the ACTLR register may not be
  954. available in non-secure mode.
  955. config ARM_ERRATA_458693
  956. bool "ARM errata: Processor deadlock when a false hazard is created"
  957. depends on CPU_V7
  958. help
  959. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  960. erratum. For very specific sequences of memory operations, it is
  961. possible for a hazard condition intended for a cache line to instead
  962. be incorrectly associated with a different cache line. This false
  963. hazard might then cause a processor deadlock. The workaround enables
  964. the L1 caching of the NEON accesses and disables the PLD instruction
  965. in the ACTLR register. Note that setting specific bits in the ACTLR
  966. register may not be available in non-secure mode.
  967. config ARM_ERRATA_460075
  968. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  969. depends on CPU_V7
  970. help
  971. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  972. erratum. Any asynchronous access to the L2 cache may encounter a
  973. situation in which recent store transactions to the L2 cache are lost
  974. and overwritten with stale memory contents from external memory. The
  975. workaround disables the write-allocate mode for the L2 cache via the
  976. ACTLR register. Note that setting specific bits in the ACTLR register
  977. may not be available in non-secure mode.
  978. config ARM_ERRATA_742230
  979. bool "ARM errata: DMB operation may be faulty"
  980. depends on CPU_V7 && SMP
  981. help
  982. This option enables the workaround for the 742230 Cortex-A9
  983. (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
  984. between two write operations may not ensure the correct visibility
  985. ordering of the two writes. This workaround sets a specific bit in
  986. the diagnostic register of the Cortex-A9 which causes the DMB
  987. instruction to behave as a DSB, ensuring the correct behaviour of
  988. the two writes.
  989. config ARM_ERRATA_742231
  990. bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
  991. depends on CPU_V7 && SMP
  992. help
  993. This option enables the workaround for the 742231 Cortex-A9
  994. (r2p0..r2p2) erratum. Under certain conditions, specific to the
  995. Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
  996. accessing some data located in the same cache line, may get corrupted
  997. data due to bad handling of the address hazard when the line gets
  998. replaced from one of the CPUs at the same time as another CPU is
  999. accessing it. This workaround sets specific bits in the diagnostic
  1000. register of the Cortex-A9 which reduces the linefill issuing
  1001. capabilities of the processor.
  1002. config PL310_ERRATA_588369
  1003. bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
  1004. depends on CACHE_L2X0
  1005. help
  1006. The PL310 L2 cache controller implements three types of Clean &
  1007. Invalidate maintenance operations: by Physical Address
  1008. (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
  1009. They are architecturally defined to behave as the execution of a
  1010. clean operation followed immediately by an invalidate operation,
  1011. both performing to the same memory location. This functionality
  1012. is not correctly implemented in PL310 as clean lines are not
  1013. invalidated as a result of these operations.
  1014. config ARM_ERRATA_720789
  1015. bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
  1016. depends on CPU_V7 && SMP
  1017. help
  1018. This option enables the workaround for the 720789 Cortex-A9 (prior to
  1019. r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
  1020. broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
  1021. As a consequence of this erratum, some TLB entries which should be
  1022. invalidated are not, resulting in an incoherency in the system page
  1023. tables. The workaround changes the TLB flushing routines to invalidate
  1024. entries regardless of the ASID.
  1025. config PL310_ERRATA_727915
  1026. bool "Background Clean & Invalidate by Way operation can cause data corruption"
  1027. depends on CACHE_L2X0
  1028. help
  1029. PL310 implements the Clean & Invalidate by Way L2 cache maintenance
  1030. operation (offset 0x7FC). This operation runs in background so that
  1031. PL310 can handle normal accesses while it is in progress. Under very
  1032. rare circumstances, due to this erratum, write data can be lost when
  1033. PL310 treats a cacheable write transaction during a Clean &
  1034. Invalidate by Way operation.
  1035. config ARM_ERRATA_743622
  1036. bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
  1037. depends on CPU_V7
  1038. help
  1039. This option enables the workaround for the 743622 Cortex-A9
  1040. (r2p0..r2p2) erratum. Under very rare conditions, a faulty
  1041. optimisation in the Cortex-A9 Store Buffer may lead to data
  1042. corruption. This workaround sets a specific bit in the diagnostic
  1043. register of the Cortex-A9 which disables the Store Buffer
  1044. optimisation, preventing the defect from occurring. This has no
  1045. visible impact on the overall performance or power consumption of the
  1046. processor.
  1047. config ARM_ERRATA_751472
  1048. bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
  1049. depends on CPU_V7 && SMP
  1050. help
  1051. This option enables the workaround for the 751472 Cortex-A9 (prior
  1052. to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
  1053. completion of a following broadcasted operation if the second
  1054. operation is received by a CPU before the ICIALLUIS has completed,
  1055. potentially leading to corrupted entries in the cache or TLB.
  1056. config ARM_ERRATA_753970
  1057. bool "ARM errata: cache sync operation may be faulty"
  1058. depends on CACHE_PL310
  1059. help
  1060. This option enables the workaround for the 753970 PL310 (r3p0) erratum.
  1061. Under some condition the effect of cache sync operation on
  1062. the store buffer still remains when the operation completes.
  1063. This means that the store buffer is always asked to drain and
  1064. this prevents it from merging any further writes. The workaround
  1065. is to replace the normal offset of cache sync operation (0x730)
  1066. by another offset targeting an unmapped PL310 register 0x740.
  1067. This has the same effect as the cache sync operation: store buffer
  1068. drain and waiting for all buffers empty.
  1069. config ARM_ERRATA_754322
  1070. bool "ARM errata: possible faulty MMU translations following an ASID switch"
  1071. depends on CPU_V7
  1072. help
  1073. This option enables the workaround for the 754322 Cortex-A9 (r2p*,
  1074. r3p*) erratum. A speculative memory access may cause a page table walk
  1075. which starts prior to an ASID switch but completes afterwards. This
  1076. can populate the micro-TLB with a stale entry which may be hit with
  1077. the new ASID. This workaround places two dsb instructions in the mm
  1078. switching code so that no page table walks can cross the ASID switch.
  1079. config ARM_ERRATA_754327
  1080. bool "ARM errata: no automatic Store Buffer drain"
  1081. depends on CPU_V7 && SMP
  1082. help
  1083. This option enables the workaround for the 754327 Cortex-A9 (prior to
  1084. r2p0) erratum. The Store Buffer does not have any automatic draining
  1085. mechanism and therefore a livelock may occur if an external agent
  1086. continuously polls a memory location waiting to observe an update.
  1087. This workaround defines cpu_relax() as smp_mb(), preventing correctly
  1088. written polling loops from denying visibility of updates to memory.
  1089. endmenu
  1090. source "arch/arm/common/Kconfig"
  1091. menu "Bus support"
  1092. config ARM_AMBA
  1093. bool
  1094. config ISA
  1095. bool
  1096. help
  1097. Find out whether you have ISA slots on your motherboard. ISA is the
  1098. name of a bus system, i.e. the way the CPU talks to the other stuff
  1099. inside your box. Other bus systems are PCI, EISA, MicroChannel
  1100. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  1101. newer boards don't support it. If you have ISA, say Y, otherwise N.
  1102. # Select ISA DMA controller support
  1103. config ISA_DMA
  1104. bool
  1105. select ISA_DMA_API
  1106. # Select ISA DMA interface
  1107. config ISA_DMA_API
  1108. bool
  1109. config PCI
  1110. bool "PCI support" if MIGHT_HAVE_PCI
  1111. help
  1112. Find out whether you have a PCI motherboard. PCI is the name of a
  1113. bus system, i.e. the way the CPU talks to the other stuff inside
  1114. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  1115. VESA. If you have PCI, say Y, otherwise N.
  1116. config PCI_DOMAINS
  1117. bool
  1118. depends on PCI
  1119. config PCI_NANOENGINE
  1120. bool "BSE nanoEngine PCI support"
  1121. depends on SA1100_NANOENGINE
  1122. help
  1123. Enable PCI on the BSE nanoEngine board.
  1124. config PCI_SYSCALL
  1125. def_bool PCI
  1126. # Select the host bridge type
  1127. config PCI_HOST_VIA82C505
  1128. bool
  1129. depends on PCI && ARCH_SHARK
  1130. default y
  1131. config PCI_HOST_ITE8152
  1132. bool
  1133. depends on PCI && MACH_ARMCORE
  1134. default y
  1135. select DMABOUNCE
  1136. source "drivers/pci/Kconfig"
  1137. source "drivers/pcmcia/Kconfig"
  1138. endmenu
  1139. menu "Kernel Features"
  1140. source "kernel/time/Kconfig"
  1141. config SMP
  1142. bool "Symmetric Multi-Processing"
  1143. depends on CPU_V6K || CPU_V7
  1144. depends on GENERIC_CLOCKEVENTS
  1145. depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
  1146. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
  1147. ARCH_EXYNOS4 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
  1148. ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE
  1149. select USE_GENERIC_SMP_HELPERS
  1150. select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
  1151. help
  1152. This enables support for systems with more than one CPU. If you have
  1153. a system with only one CPU, like most personal computers, say N. If
  1154. you have a system with more than one CPU, say Y.
  1155. If you say N here, the kernel will run on single and multiprocessor
  1156. machines, but will use only one CPU of a multiprocessor machine. If
  1157. you say Y here, the kernel will run on many, but not all, single
  1158. processor machines. On a single processor machine, the kernel will
  1159. run faster if you say N here.
  1160. See also <file:Documentation/i386/IO-APIC.txt>,
  1161. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  1162. <http://tldp.org/HOWTO/SMP-HOWTO.html>.
  1163. If you don't know what to do here, say N.
  1164. config SMP_ON_UP
  1165. bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
  1166. depends on EXPERIMENTAL
  1167. depends on SMP && !XIP_KERNEL
  1168. default y
  1169. help
  1170. SMP kernels contain instructions which fail on non-SMP processors.
  1171. Enabling this option allows the kernel to modify itself to make
  1172. these instructions safe. Disabling it allows about 1K of space
  1173. savings.
  1174. If you don't know what to do here, say Y.
  1175. config HAVE_ARM_SCU
  1176. bool
  1177. help
  1178. This option enables support for the ARM system coherency unit
  1179. config HAVE_ARM_TWD
  1180. bool
  1181. depends on SMP
  1182. select TICK_ONESHOT
  1183. help
  1184. This options enables support for the ARM timer and watchdog unit
  1185. choice
  1186. prompt "Memory split"
  1187. default VMSPLIT_3G
  1188. help
  1189. Select the desired split between kernel and user memory.
  1190. If you are not absolutely sure what you are doing, leave this
  1191. option alone!
  1192. config VMSPLIT_3G
  1193. bool "3G/1G user/kernel split"
  1194. config VMSPLIT_2G
  1195. bool "2G/2G user/kernel split"
  1196. config VMSPLIT_1G
  1197. bool "1G/3G user/kernel split"
  1198. endchoice
  1199. config PAGE_OFFSET
  1200. hex
  1201. default 0x40000000 if VMSPLIT_1G
  1202. default 0x80000000 if VMSPLIT_2G
  1203. default 0xC0000000
  1204. config NR_CPUS
  1205. int "Maximum number of CPUs (2-32)"
  1206. range 2 32
  1207. depends on SMP
  1208. default "4"
  1209. config HOTPLUG_CPU
  1210. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  1211. depends on SMP && HOTPLUG && EXPERIMENTAL
  1212. help
  1213. Say Y here to experiment with turning CPUs off and on. CPUs
  1214. can be controlled through /sys/devices/system/cpu.
  1215. config LOCAL_TIMERS
  1216. bool "Use local timer interrupts"
  1217. depends on SMP
  1218. default y
  1219. select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
  1220. help
  1221. Enable support for local timers on SMP platforms, rather then the
  1222. legacy IPI broadcast method. Local timers allows the system
  1223. accounting to be spread across the timer interval, preventing a
  1224. "thundering herd" at every timer tick.
  1225. source kernel/Kconfig.preempt
  1226. config HZ
  1227. int
  1228. default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
  1229. ARCH_S5PV210 || ARCH_EXYNOS4
  1230. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  1231. default AT91_TIMER_HZ if ARCH_AT91
  1232. default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
  1233. default 100
  1234. config THUMB2_KERNEL
  1235. bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
  1236. depends on CPU_V7 && !CPU_V6 && !CPU_V6K && EXPERIMENTAL
  1237. select AEABI
  1238. select ARM_ASM_UNIFIED
  1239. help
  1240. By enabling this option, the kernel will be compiled in
  1241. Thumb-2 mode. A compiler/assembler that understand the unified
  1242. ARM-Thumb syntax is needed.
  1243. If unsure, say N.
  1244. config THUMB2_AVOID_R_ARM_THM_JUMP11
  1245. bool "Work around buggy Thumb-2 short branch relocations in gas"
  1246. depends on THUMB2_KERNEL && MODULES
  1247. default y
  1248. help
  1249. Various binutils versions can resolve Thumb-2 branches to
  1250. locally-defined, preemptible global symbols as short-range "b.n"
  1251. branch instructions.
  1252. This is a problem, because there's no guarantee the final
  1253. destination of the symbol, or any candidate locations for a
  1254. trampoline, are within range of the branch. For this reason, the
  1255. kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
  1256. relocation in modules at all, and it makes little sense to add
  1257. support.
  1258. The symptom is that the kernel fails with an "unsupported
  1259. relocation" error when loading some modules.
  1260. Until fixed tools are available, passing
  1261. -fno-optimize-sibling-calls to gcc should prevent gcc generating
  1262. code which hits this problem, at the cost of a bit of extra runtime
  1263. stack usage in some cases.
  1264. The problem is described in more detail at:
  1265. https://bugs.launchpad.net/binutils-linaro/+bug/725126
  1266. Only Thumb-2 kernels are affected.
  1267. Unless you are sure your tools don't have this problem, say Y.
  1268. config ARM_ASM_UNIFIED
  1269. bool
  1270. config AEABI
  1271. bool "Use the ARM EABI to compile the kernel"
  1272. help
  1273. This option allows for the kernel to be compiled using the latest
  1274. ARM ABI (aka EABI). This is only useful if you are using a user
  1275. space environment that is also compiled with EABI.
  1276. Since there are major incompatibilities between the legacy ABI and
  1277. EABI, especially with regard to structure member alignment, this
  1278. option also changes the kernel syscall calling convention to
  1279. disambiguate both ABIs and allow for backward compatibility support
  1280. (selected with CONFIG_OABI_COMPAT).
  1281. To use this you need GCC version 4.0.0 or later.
  1282. config OABI_COMPAT
  1283. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  1284. depends on AEABI && EXPERIMENTAL && !THUMB2_KERNEL
  1285. default y
  1286. help
  1287. This option preserves the old syscall interface along with the
  1288. new (ARM EABI) one. It also provides a compatibility layer to
  1289. intercept syscalls that have structure arguments which layout
  1290. in memory differs between the legacy ABI and the new ARM EABI
  1291. (only for non "thumb" binaries). This option adds a tiny
  1292. overhead to all syscalls and produces a slightly larger kernel.
  1293. If you know you'll be using only pure EABI user space then you
  1294. can say N here. If this option is not selected and you attempt
  1295. to execute a legacy ABI binary then the result will be
  1296. UNPREDICTABLE (in fact it can be predicted that it won't work
  1297. at all). If in doubt say Y.
  1298. config ARCH_HAS_HOLES_MEMORYMODEL
  1299. bool
  1300. config ARCH_SPARSEMEM_ENABLE
  1301. bool
  1302. config ARCH_SPARSEMEM_DEFAULT
  1303. def_bool ARCH_SPARSEMEM_ENABLE
  1304. config ARCH_SELECT_MEMORY_MODEL
  1305. def_bool ARCH_SPARSEMEM_ENABLE
  1306. config HAVE_ARCH_PFN_VALID
  1307. def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
  1308. config HIGHMEM
  1309. bool "High Memory Support"
  1310. depends on MMU
  1311. help
  1312. The address space of ARM processors is only 4 Gigabytes large
  1313. and it has to accommodate user address space, kernel address
  1314. space as well as some memory mapped IO. That means that, if you
  1315. have a large amount of physical memory and/or IO, not all of the
  1316. memory can be "permanently mapped" by the kernel. The physical
  1317. memory that is not permanently mapped is called "high memory".
  1318. Depending on the selected kernel/user memory split, minimum
  1319. vmalloc space and actual amount of RAM, you may not need this
  1320. option which should result in a slightly faster kernel.
  1321. If unsure, say n.
  1322. config HIGHPTE
  1323. bool "Allocate 2nd-level pagetables from highmem"
  1324. depends on HIGHMEM
  1325. config HW_PERF_EVENTS
  1326. bool "Enable hardware performance counter support for perf events"
  1327. depends on PERF_EVENTS && CPU_HAS_PMU
  1328. default y
  1329. help
  1330. Enable hardware performance counter support for perf events. If
  1331. disabled, perf events will use software events only.
  1332. source "mm/Kconfig"
  1333. config FORCE_MAX_ZONEORDER
  1334. int "Maximum zone order" if ARCH_SHMOBILE
  1335. range 11 64 if ARCH_SHMOBILE
  1336. default "9" if SA1111
  1337. default "11"
  1338. help
  1339. The kernel memory allocator divides physically contiguous memory
  1340. blocks into "zones", where each zone is a power of two number of
  1341. pages. This option selects the largest power of two that the kernel
  1342. keeps in the memory allocator. If you need to allocate very large
  1343. blocks of physically contiguous memory, then you may need to
  1344. increase this value.
  1345. This config option is actually maximum order plus one. For example,
  1346. a value of 11 means that the largest free memory block is 2^10 pages.
  1347. config LEDS
  1348. bool "Timer and CPU usage LEDs"
  1349. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  1350. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  1351. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  1352. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  1353. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  1354. ARCH_AT91 || ARCH_DAVINCI || \
  1355. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  1356. help
  1357. If you say Y here, the LEDs on your machine will be used
  1358. to provide useful information about your current system status.
  1359. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  1360. be able to select which LEDs are active using the options below. If
  1361. you are compiling a kernel for the EBSA-110 or the LART however, the
  1362. red LED will simply flash regularly to indicate that the system is
  1363. still functional. It is safe to say Y here if you have a CATS
  1364. system, but the driver will do nothing.
  1365. config LEDS_TIMER
  1366. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  1367. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1368. || MACH_OMAP_PERSEUS2
  1369. depends on LEDS
  1370. depends on !GENERIC_CLOCKEVENTS
  1371. default y if ARCH_EBSA110
  1372. help
  1373. If you say Y here, one of the system LEDs (the green one on the
  1374. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1375. will flash regularly to indicate that the system is still
  1376. operational. This is mainly useful to kernel hackers who are
  1377. debugging unstable kernels.
  1378. The LART uses the same LED for both Timer LED and CPU usage LED
  1379. functions. You may choose to use both, but the Timer LED function
  1380. will overrule the CPU usage LED.
  1381. config LEDS_CPU
  1382. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1383. !ARCH_OMAP) \
  1384. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1385. || MACH_OMAP_PERSEUS2
  1386. depends on LEDS
  1387. help
  1388. If you say Y here, the red LED will be used to give a good real
  1389. time indication of CPU usage, by lighting whenever the idle task
  1390. is not currently executing.
  1391. The LART uses the same LED for both Timer LED and CPU usage LED
  1392. functions. You may choose to use both, but the Timer LED function
  1393. will overrule the CPU usage LED.
  1394. config ALIGNMENT_TRAP
  1395. bool
  1396. depends on CPU_CP15_MMU
  1397. default y if !ARCH_EBSA110
  1398. select HAVE_PROC_CPU if PROC_FS
  1399. help
  1400. ARM processors cannot fetch/store information which is not
  1401. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1402. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1403. fetch/store instructions will be emulated in software if you say
  1404. here, which has a severe performance impact. This is necessary for
  1405. correct operation of some network protocols. With an IP-only
  1406. configuration it is safe to say N, otherwise say Y.
  1407. config UACCESS_WITH_MEMCPY
  1408. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1409. depends on MMU && EXPERIMENTAL
  1410. default y if CPU_FEROCEON
  1411. help
  1412. Implement faster copy_to_user and clear_user methods for CPU
  1413. cores where a 8-word STM instruction give significantly higher
  1414. memory write throughput than a sequence of individual 32bit stores.
  1415. A possible side effect is a slight increase in scheduling latency
  1416. between threads sharing the same address space if they invoke
  1417. such copy operations with large buffers.
  1418. However, if the CPU data cache is using a write-allocate mode,
  1419. this option is unlikely to provide any performance gain.
  1420. config SECCOMP
  1421. bool
  1422. prompt "Enable seccomp to safely compute untrusted bytecode"
  1423. ---help---
  1424. This kernel feature is useful for number crunching applications
  1425. that may need to compute untrusted bytecode during their
  1426. execution. By using pipes or other transports made available to
  1427. the process as file descriptors supporting the read/write
  1428. syscalls, it's possible to isolate those applications in
  1429. their own address space using seccomp. Once seccomp is
  1430. enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
  1431. and the task is only allowed to execute a few safe syscalls
  1432. defined by each seccomp mode.
  1433. config CC_STACKPROTECTOR
  1434. bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
  1435. depends on EXPERIMENTAL
  1436. help
  1437. This option turns on the -fstack-protector GCC feature. This
  1438. feature puts, at the beginning of functions, a canary value on
  1439. the stack just before the return address, and validates
  1440. the value just before actually returning. Stack based buffer
  1441. overflows (that need to overwrite this return address) now also
  1442. overwrite the canary, which gets detected and the attack is then
  1443. neutralized via a kernel panic.
  1444. This feature requires gcc version 4.2 or above.
  1445. config DEPRECATED_PARAM_STRUCT
  1446. bool "Provide old way to pass kernel parameters"
  1447. help
  1448. This was deprecated in 2001 and announced to live on for 5 years.
  1449. Some old boot loaders still use this way.
  1450. endmenu
  1451. menu "Boot options"
  1452. config USE_OF
  1453. bool "Flattened Device Tree support"
  1454. select OF
  1455. select OF_EARLY_FLATTREE
  1456. select IRQ_DOMAIN
  1457. help
  1458. Include support for flattened device tree machine descriptions.
  1459. # Compressed boot loader in ROM. Yes, we really want to ask about
  1460. # TEXT and BSS so we preserve their values in the config files.
  1461. config ZBOOT_ROM_TEXT
  1462. hex "Compressed ROM boot loader base address"
  1463. default "0"
  1464. help
  1465. The physical address at which the ROM-able zImage is to be
  1466. placed in the target. Platforms which normally make use of
  1467. ROM-able zImage formats normally set this to a suitable
  1468. value in their defconfig file.
  1469. If ZBOOT_ROM is not enabled, this has no effect.
  1470. config ZBOOT_ROM_BSS
  1471. hex "Compressed ROM boot loader BSS address"
  1472. default "0"
  1473. help
  1474. The base address of an area of read/write memory in the target
  1475. for the ROM-able zImage which must be available while the
  1476. decompressor is running. It must be large enough to hold the
  1477. entire decompressed kernel plus an additional 128 KiB.
  1478. Platforms which normally make use of ROM-able zImage formats
  1479. normally set this to a suitable value in their defconfig file.
  1480. If ZBOOT_ROM is not enabled, this has no effect.
  1481. config ZBOOT_ROM
  1482. bool "Compressed boot loader in ROM/flash"
  1483. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1484. help
  1485. Say Y here if you intend to execute your compressed kernel image
  1486. (zImage) directly from ROM or flash. If unsure, say N.
  1487. choice
  1488. prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
  1489. depends on ZBOOT_ROM && ARCH_SH7372 && EXPERIMENTAL
  1490. default ZBOOT_ROM_NONE
  1491. help
  1492. Include experimental SD/MMC loading code in the ROM-able zImage.
  1493. With this enabled it is possible to write the the ROM-able zImage
  1494. kernel image to an MMC or SD card and boot the kernel straight
  1495. from the reset vector. At reset the processor Mask ROM will load
  1496. the first part of the the ROM-able zImage which in turn loads the
  1497. rest the kernel image to RAM.
  1498. config ZBOOT_ROM_NONE
  1499. bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
  1500. help
  1501. Do not load image from SD or MMC
  1502. config ZBOOT_ROM_MMCIF
  1503. bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
  1504. help
  1505. Load image from MMCIF hardware block.
  1506. config ZBOOT_ROM_SH_MOBILE_SDHI
  1507. bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
  1508. help
  1509. Load image from SDHI hardware block
  1510. endchoice
  1511. config CMDLINE
  1512. string "Default kernel command string"
  1513. default ""
  1514. help
  1515. On some architectures (EBSA110 and CATS), there is currently no way
  1516. for the boot loader to pass arguments to the kernel. For these
  1517. architectures, you should supply some command-line options at build
  1518. time by entering them here. As a minimum, you should specify the
  1519. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1520. choice
  1521. prompt "Kernel command line type" if CMDLINE != ""
  1522. default CMDLINE_FROM_BOOTLOADER
  1523. config CMDLINE_FROM_BOOTLOADER
  1524. bool "Use bootloader kernel arguments if available"
  1525. help
  1526. Uses the command-line options passed by the boot loader. If
  1527. the boot loader doesn't provide any, the default kernel command
  1528. string provided in CMDLINE will be used.
  1529. config CMDLINE_EXTEND
  1530. bool "Extend bootloader kernel arguments"
  1531. help
  1532. The command-line arguments provided by the boot loader will be
  1533. appended to the default kernel command string.
  1534. config CMDLINE_FORCE
  1535. bool "Always use the default kernel command string"
  1536. help
  1537. Always use the default kernel command string, even if the boot
  1538. loader passes other arguments to the kernel.
  1539. This is useful if you cannot or don't want to change the
  1540. command-line options your boot loader passes to the kernel.
  1541. endchoice
  1542. config XIP_KERNEL
  1543. bool "Kernel Execute-In-Place from ROM"
  1544. depends on !ZBOOT_ROM
  1545. help
  1546. Execute-In-Place allows the kernel to run from non-volatile storage
  1547. directly addressable by the CPU, such as NOR flash. This saves RAM
  1548. space since the text section of the kernel is not loaded from flash
  1549. to RAM. Read-write sections, such as the data section and stack,
  1550. are still copied to RAM. The XIP kernel is not compressed since
  1551. it has to run directly from flash, so it will take more space to
  1552. store it. The flash address used to link the kernel object files,
  1553. and for storing it, is configuration dependent. Therefore, if you
  1554. say Y here, you must know the proper physical address where to
  1555. store the kernel image depending on your own flash memory usage.
  1556. Also note that the make target becomes "make xipImage" rather than
  1557. "make zImage" or "make Image". The final kernel binary to put in
  1558. ROM memory will be arch/arm/boot/xipImage.
  1559. If unsure, say N.
  1560. config XIP_PHYS_ADDR
  1561. hex "XIP Kernel Physical Location"
  1562. depends on XIP_KERNEL
  1563. default "0x00080000"
  1564. help
  1565. This is the physical address in your flash memory the kernel will
  1566. be linked for and stored to. This address is dependent on your
  1567. own flash usage.
  1568. config KEXEC
  1569. bool "Kexec system call (EXPERIMENTAL)"
  1570. depends on EXPERIMENTAL
  1571. help
  1572. kexec is a system call that implements the ability to shutdown your
  1573. current kernel, and to start another kernel. It is like a reboot
  1574. but it is independent of the system firmware. And like a reboot
  1575. you can start any kernel with it, not just Linux.
  1576. It is an ongoing process to be certain the hardware in a machine
  1577. is properly shutdown, so do not be surprised if this code does not
  1578. initially work for you. It may help to enable device hotplugging
  1579. support.
  1580. config ATAGS_PROC
  1581. bool "Export atags in procfs"
  1582. depends on KEXEC
  1583. default y
  1584. help
  1585. Should the atags used to boot the kernel be exported in an "atags"
  1586. file in procfs. Useful with kexec.
  1587. config CRASH_DUMP
  1588. bool "Build kdump crash kernel (EXPERIMENTAL)"
  1589. depends on EXPERIMENTAL
  1590. help
  1591. Generate crash dump after being started by kexec. This should
  1592. be normally only set in special crash dump kernels which are
  1593. loaded in the main kernel with kexec-tools into a specially
  1594. reserved region and then later executed after a crash by
  1595. kdump/kexec. The crash dump kernel must be compiled to a
  1596. memory address not used by the main kernel
  1597. For more details see Documentation/kdump/kdump.txt
  1598. config AUTO_ZRELADDR
  1599. bool "Auto calculation of the decompressed kernel image address"
  1600. depends on !ZBOOT_ROM && !ARCH_U300
  1601. help
  1602. ZRELADDR is the physical address where the decompressed kernel
  1603. image will be placed. If AUTO_ZRELADDR is selected, the address
  1604. will be determined at run-time by masking the current IP with
  1605. 0xf8000000. This assumes the zImage being placed in the first 128MB
  1606. from start of memory.
  1607. endmenu
  1608. menu "CPU Power Management"
  1609. if ARCH_HAS_CPUFREQ
  1610. source "drivers/cpufreq/Kconfig"
  1611. config CPU_FREQ_IMX
  1612. tristate "CPUfreq driver for i.MX CPUs"
  1613. depends on ARCH_MXC && CPU_FREQ
  1614. help
  1615. This enables the CPUfreq driver for i.MX CPUs.
  1616. config CPU_FREQ_SA1100
  1617. bool
  1618. config CPU_FREQ_SA1110
  1619. bool
  1620. config CPU_FREQ_INTEGRATOR
  1621. tristate "CPUfreq driver for ARM Integrator CPUs"
  1622. depends on ARCH_INTEGRATOR && CPU_FREQ
  1623. default y
  1624. help
  1625. This enables the CPUfreq driver for ARM Integrator CPUs.
  1626. For details, take a look at <file:Documentation/cpu-freq>.
  1627. If in doubt, say Y.
  1628. config CPU_FREQ_PXA
  1629. bool
  1630. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1631. default y
  1632. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1633. config CPU_FREQ_S3C
  1634. bool
  1635. help
  1636. Internal configuration node for common cpufreq on Samsung SoC
  1637. config CPU_FREQ_S3C24XX
  1638. bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
  1639. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1640. select CPU_FREQ_S3C
  1641. help
  1642. This enables the CPUfreq driver for the Samsung S3C24XX family
  1643. of CPUs.
  1644. For details, take a look at <file:Documentation/cpu-freq>.
  1645. If in doubt, say N.
  1646. config CPU_FREQ_S3C24XX_PLL
  1647. bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
  1648. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1649. help
  1650. Compile in support for changing the PLL frequency from the
  1651. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1652. after a frequency change, so by default it is not enabled.
  1653. This also means that the PLL tables for the selected CPU(s) will
  1654. be built which may increase the size of the kernel image.
  1655. config CPU_FREQ_S3C24XX_DEBUG
  1656. bool "Debug CPUfreq Samsung driver core"
  1657. depends on CPU_FREQ_S3C24XX
  1658. help
  1659. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1660. config CPU_FREQ_S3C24XX_IODEBUG
  1661. bool "Debug CPUfreq Samsung driver IO timing"
  1662. depends on CPU_FREQ_S3C24XX
  1663. help
  1664. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1665. config CPU_FREQ_S3C24XX_DEBUGFS
  1666. bool "Export debugfs for CPUFreq"
  1667. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1668. help
  1669. Export status information via debugfs.
  1670. endif
  1671. source "drivers/cpuidle/Kconfig"
  1672. endmenu
  1673. menu "Floating point emulation"
  1674. comment "At least one emulation must be selected"
  1675. config FPE_NWFPE
  1676. bool "NWFPE math emulation"
  1677. depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
  1678. ---help---
  1679. Say Y to include the NWFPE floating point emulator in the kernel.
  1680. This is necessary to run most binaries. Linux does not currently
  1681. support floating point hardware so you need to say Y here even if
  1682. your machine has an FPA or floating point co-processor podule.
  1683. You may say N here if you are going to load the Acorn FPEmulator
  1684. early in the bootup.
  1685. config FPE_NWFPE_XP
  1686. bool "Support extended precision"
  1687. depends on FPE_NWFPE
  1688. help
  1689. Say Y to include 80-bit support in the kernel floating-point
  1690. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1691. Note that gcc does not generate 80-bit operations by default,
  1692. so in most cases this option only enlarges the size of the
  1693. floating point emulator without any good reason.
  1694. You almost surely want to say N here.
  1695. config FPE_FASTFPE
  1696. bool "FastFPE math emulation (EXPERIMENTAL)"
  1697. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1698. ---help---
  1699. Say Y here to include the FAST floating point emulator in the kernel.
  1700. This is an experimental much faster emulator which now also has full
  1701. precision for the mantissa. It does not support any exceptions.
  1702. It is very simple, and approximately 3-6 times faster than NWFPE.
  1703. It should be sufficient for most programs. It may be not suitable
  1704. for scientific calculations, but you have to check this for yourself.
  1705. If you do not feel you need a faster FP emulation you should better
  1706. choose NWFPE.
  1707. config VFP
  1708. bool "VFP-format floating point maths"
  1709. depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1710. help
  1711. Say Y to include VFP support code in the kernel. This is needed
  1712. if your hardware includes a VFP unit.
  1713. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1714. release notes and additional status information.
  1715. Say N if your target does not have VFP hardware.
  1716. config VFPv3
  1717. bool
  1718. depends on VFP
  1719. default y if CPU_V7
  1720. config NEON
  1721. bool "Advanced SIMD (NEON) Extension support"
  1722. depends on VFPv3 && CPU_V7
  1723. help
  1724. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1725. Extension.
  1726. endmenu
  1727. menu "Userspace binary formats"
  1728. source "fs/Kconfig.binfmt"
  1729. config ARTHUR
  1730. tristate "RISC OS personality"
  1731. depends on !AEABI
  1732. help
  1733. Say Y here to include the kernel code necessary if you want to run
  1734. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1735. experimental; if this sounds frightening, say N and sleep in peace.
  1736. You can also say M here to compile this support as a module (which
  1737. will be called arthur).
  1738. endmenu
  1739. menu "Power management options"
  1740. source "kernel/power/Kconfig"
  1741. config ARCH_SUSPEND_POSSIBLE
  1742. depends on !ARCH_S5P64X0 && !ARCH_S5PC100
  1743. depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
  1744. CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE
  1745. def_bool y
  1746. endmenu
  1747. source "net/Kconfig"
  1748. source "drivers/Kconfig"
  1749. source "fs/Kconfig"
  1750. source "arch/arm/Kconfig.debug"
  1751. source "security/Kconfig"
  1752. source "crypto/Kconfig"
  1753. source "lib/Kconfig"