Kconfig 58 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 && !THUMB2_KERNEL)
  14. select HAVE_KRETPROBES if (HAVE_KPROBES)
  15. select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  16. select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
  17. select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
  18. select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
  19. select HAVE_GENERIC_DMA_COHERENT
  20. select HAVE_KERNEL_GZIP
  21. select HAVE_KERNEL_LZO
  22. select HAVE_KERNEL_LZMA
  23. select HAVE_IRQ_WORK
  24. select HAVE_PERF_EVENTS
  25. select PERF_USE_VMALLOC
  26. select HAVE_REGS_AND_STACK_ACCESS_API
  27. select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_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 HAVE_PWM
  40. bool
  41. config MIGHT_HAVE_PCI
  42. bool
  43. config SYS_SUPPORTS_APM_EMULATION
  44. bool
  45. config HAVE_SCHED_CLOCK
  46. bool
  47. config GENERIC_GPIO
  48. bool
  49. config ARCH_USES_GETTIMEOFFSET
  50. bool
  51. default n
  52. config GENERIC_CLOCKEVENTS
  53. bool
  54. config GENERIC_CLOCKEVENTS_BROADCAST
  55. bool
  56. depends on GENERIC_CLOCKEVENTS
  57. default y if SMP
  58. config KTIME_SCALAR
  59. bool
  60. default y
  61. config HAVE_TCM
  62. bool
  63. select GENERIC_ALLOCATOR
  64. config HAVE_PROC_CPU
  65. bool
  66. config NO_IOPORT
  67. bool
  68. config EISA
  69. bool
  70. ---help---
  71. The Extended Industry Standard Architecture (EISA) bus was
  72. developed as an open alternative to the IBM MicroChannel bus.
  73. The EISA bus provided some of the features of the IBM MicroChannel
  74. bus while maintaining backward compatibility with cards made for
  75. the older ISA bus. The EISA bus saw limited use between 1988 and
  76. 1995 when it was made obsolete by the PCI bus.
  77. Say Y here if you are building a kernel for an EISA-based machine.
  78. Otherwise, say N.
  79. config SBUS
  80. bool
  81. config MCA
  82. bool
  83. help
  84. MicroChannel Architecture is found in some IBM PS/2 machines and
  85. laptops. It is a bus system similar to PCI or ISA. See
  86. <file:Documentation/mca.txt> (and especially the web page given
  87. there) before attempting to build an MCA bus kernel.
  88. config STACKTRACE_SUPPORT
  89. bool
  90. default y
  91. config HAVE_LATENCYTOP_SUPPORT
  92. bool
  93. depends on !SMP
  94. default y
  95. config LOCKDEP_SUPPORT
  96. bool
  97. default y
  98. config TRACE_IRQFLAGS_SUPPORT
  99. bool
  100. default y
  101. config HARDIRQS_SW_RESEND
  102. bool
  103. default y
  104. config GENERIC_IRQ_PROBE
  105. bool
  106. default y
  107. config GENERIC_LOCKBREAK
  108. bool
  109. default y
  110. depends on SMP && PREEMPT
  111. config RWSEM_GENERIC_SPINLOCK
  112. bool
  113. default y
  114. config RWSEM_XCHGADD_ALGORITHM
  115. bool
  116. config ARCH_HAS_ILOG2_U32
  117. bool
  118. config ARCH_HAS_ILOG2_U64
  119. bool
  120. config ARCH_HAS_CPUFREQ
  121. bool
  122. help
  123. Internal node to signify that the ARCH has CPUFREQ support
  124. and that the relevant menu configurations are displayed for
  125. it.
  126. config ARCH_HAS_CPU_IDLE_WAIT
  127. def_bool y
  128. config GENERIC_HWEIGHT
  129. bool
  130. default y
  131. config GENERIC_CALIBRATE_DELAY
  132. bool
  133. default y
  134. config ARCH_MAY_HAVE_PC_FDC
  135. bool
  136. config ZONE_DMA
  137. bool
  138. config NEED_DMA_MAP_STATE
  139. def_bool y
  140. config GENERIC_ISA_DMA
  141. bool
  142. config FIQ
  143. bool
  144. config ARCH_MTD_XIP
  145. bool
  146. config VECTORS_BASE
  147. hex
  148. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  149. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  150. default 0x00000000
  151. help
  152. The base address of exception vectors.
  153. config ARM_PATCH_PHYS_VIRT
  154. bool "Patch physical to virtual translations at runtime (EXPERIMENTAL)"
  155. depends on EXPERIMENTAL
  156. depends on !XIP_KERNEL && MMU
  157. depends on !ARCH_REALVIEW || !SPARSEMEM
  158. help
  159. Patch phys-to-virt and virt-to-phys translation functions at
  160. boot and module load time according to the position of the
  161. kernel in system memory.
  162. This can only be used with non-XIP MMU kernels where the base
  163. of physical memory is at a 16MB boundary, or theoretically 64K
  164. for the MSM machine class.
  165. config ARM_PATCH_PHYS_VIRT_16BIT
  166. def_bool y
  167. depends on ARM_PATCH_PHYS_VIRT && ARCH_MSM
  168. help
  169. This option extends the physical to virtual translation patching
  170. to allow physical memory down to a theoretical minimum of 64K
  171. boundaries.
  172. source "init/Kconfig"
  173. source "kernel/Kconfig.freezer"
  174. menu "System Type"
  175. config MMU
  176. bool "MMU-based Paged Memory Management Support"
  177. default y
  178. help
  179. Select if you want MMU-based virtualised addressing space
  180. support by paged memory management. If unsure, say 'Y'.
  181. #
  182. # The "ARM system type" choice list is ordered alphabetically by option
  183. # text. Please add new entries in the option alphabetic order.
  184. #
  185. choice
  186. prompt "ARM system type"
  187. default ARCH_VERSATILE
  188. config ARCH_INTEGRATOR
  189. bool "ARM Ltd. Integrator family"
  190. select ARM_AMBA
  191. select ARCH_HAS_CPUFREQ
  192. select CLKDEV_LOOKUP
  193. select ICST
  194. select GENERIC_CLOCKEVENTS
  195. select PLAT_VERSATILE
  196. select PLAT_VERSATILE_FPGA_IRQ
  197. help
  198. Support for ARM's Integrator platform.
  199. config ARCH_REALVIEW
  200. bool "ARM Ltd. RealView family"
  201. select ARM_AMBA
  202. select CLKDEV_LOOKUP
  203. select ICST
  204. select GENERIC_CLOCKEVENTS
  205. select ARCH_WANT_OPTIONAL_GPIOLIB
  206. select PLAT_VERSATILE
  207. select PLAT_VERSATILE_CLCD
  208. select ARM_TIMER_SP804
  209. select GPIO_PL061 if GPIOLIB
  210. help
  211. This enables support for ARM Ltd RealView boards.
  212. config ARCH_VERSATILE
  213. bool "ARM Ltd. Versatile family"
  214. select ARM_AMBA
  215. select ARM_VIC
  216. select CLKDEV_LOOKUP
  217. select ICST
  218. select GENERIC_CLOCKEVENTS
  219. select ARCH_WANT_OPTIONAL_GPIOLIB
  220. select PLAT_VERSATILE
  221. select PLAT_VERSATILE_CLCD
  222. select PLAT_VERSATILE_FPGA_IRQ
  223. select ARM_TIMER_SP804
  224. help
  225. This enables support for ARM Ltd Versatile board.
  226. config ARCH_VEXPRESS
  227. bool "ARM Ltd. Versatile Express family"
  228. select ARCH_WANT_OPTIONAL_GPIOLIB
  229. select ARM_AMBA
  230. select ARM_TIMER_SP804
  231. select CLKDEV_LOOKUP
  232. select GENERIC_CLOCKEVENTS
  233. select HAVE_CLK
  234. select HAVE_PATA_PLATFORM
  235. select ICST
  236. select PLAT_VERSATILE
  237. select PLAT_VERSATILE_CLCD
  238. help
  239. This enables support for the ARM Ltd Versatile Express boards.
  240. config ARCH_AT91
  241. bool "Atmel AT91"
  242. select ARCH_REQUIRE_GPIOLIB
  243. select HAVE_CLK
  244. select CLKDEV_LOOKUP
  245. select ARM_PATCH_PHYS_VIRT if MMU
  246. help
  247. This enables support for systems based on the Atmel AT91RM9200,
  248. AT91SAM9 and AT91CAP9 processors.
  249. config ARCH_BCMRING
  250. bool "Broadcom BCMRING"
  251. depends on MMU
  252. select CPU_V6
  253. select ARM_AMBA
  254. select ARM_TIMER_SP804
  255. select CLKDEV_LOOKUP
  256. select GENERIC_CLOCKEVENTS
  257. select ARCH_WANT_OPTIONAL_GPIOLIB
  258. help
  259. Support for Broadcom's BCMRing platform.
  260. config ARCH_CLPS711X
  261. bool "Cirrus Logic CLPS711x/EP721x-based"
  262. select CPU_ARM720T
  263. select ARCH_USES_GETTIMEOFFSET
  264. help
  265. Support for Cirrus Logic 711x/721x based boards.
  266. config ARCH_CNS3XXX
  267. bool "Cavium Networks CNS3XXX family"
  268. select CPU_V6
  269. select GENERIC_CLOCKEVENTS
  270. select ARM_GIC
  271. select MIGHT_HAVE_PCI
  272. select PCI_DOMAINS if PCI
  273. help
  274. Support for Cavium Networks CNS3XXX platform.
  275. config ARCH_GEMINI
  276. bool "Cortina Systems Gemini"
  277. select CPU_FA526
  278. select ARCH_REQUIRE_GPIOLIB
  279. select ARCH_USES_GETTIMEOFFSET
  280. help
  281. Support for the Cortina Systems Gemini family SoCs
  282. config ARCH_PRIMA2
  283. bool "CSR SiRFSoC PRIMA2 ARM Cortex A9 Platform"
  284. select CPU_V7
  285. select GENERIC_TIME
  286. select NO_IOPORT
  287. select GENERIC_CLOCKEVENTS
  288. select CLKDEV_LOOKUP
  289. select GENERIC_IRQ_CHIP
  290. select USE_OF
  291. select ZONE_DMA
  292. help
  293. Support for CSR SiRFSoC ARM Cortex A9 Platform
  294. config ARCH_EBSA110
  295. bool "EBSA-110"
  296. select CPU_SA110
  297. select ISA
  298. select NO_IOPORT
  299. select ARCH_USES_GETTIMEOFFSET
  300. help
  301. This is an evaluation board for the StrongARM processor available
  302. from Digital. It has limited hardware on-board, including an
  303. Ethernet interface, two PCMCIA sockets, two serial ports and a
  304. parallel port.
  305. config ARCH_EP93XX
  306. bool "EP93xx-based"
  307. select CPU_ARM920T
  308. select ARM_AMBA
  309. select ARM_VIC
  310. select CLKDEV_LOOKUP
  311. select ARCH_REQUIRE_GPIOLIB
  312. select ARCH_HAS_HOLES_MEMORYMODEL
  313. select ARCH_USES_GETTIMEOFFSET
  314. help
  315. This enables support for the Cirrus EP93xx series of CPUs.
  316. config ARCH_FOOTBRIDGE
  317. bool "FootBridge"
  318. select CPU_SA110
  319. select FOOTBRIDGE
  320. select GENERIC_CLOCKEVENTS
  321. help
  322. Support for systems based on the DC21285 companion chip
  323. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  324. config ARCH_MXC
  325. bool "Freescale MXC/iMX-based"
  326. select GENERIC_CLOCKEVENTS
  327. select ARCH_REQUIRE_GPIOLIB
  328. select CLKDEV_LOOKUP
  329. select CLKSRC_MMIO
  330. select HAVE_SCHED_CLOCK
  331. help
  332. Support for Freescale MXC/iMX-based family of processors
  333. config ARCH_MXS
  334. bool "Freescale MXS-based"
  335. select GENERIC_CLOCKEVENTS
  336. select ARCH_REQUIRE_GPIOLIB
  337. select CLKDEV_LOOKUP
  338. select CLKSRC_MMIO
  339. help
  340. Support for Freescale MXS-based family of processors
  341. config ARCH_NETX
  342. bool "Hilscher NetX based"
  343. select CLKSRC_MMIO
  344. select CPU_ARM926T
  345. select ARM_VIC
  346. select GENERIC_CLOCKEVENTS
  347. help
  348. This enables support for systems based on the Hilscher NetX Soc
  349. config ARCH_H720X
  350. bool "Hynix HMS720x-based"
  351. select CPU_ARM720T
  352. select ISA_DMA_API
  353. select ARCH_USES_GETTIMEOFFSET
  354. help
  355. This enables support for systems based on the Hynix HMS720x
  356. config ARCH_IOP13XX
  357. bool "IOP13xx-based"
  358. depends on MMU
  359. select CPU_XSC3
  360. select PLAT_IOP
  361. select PCI
  362. select ARCH_SUPPORTS_MSI
  363. select VMSPLIT_1G
  364. help
  365. Support for Intel's IOP13XX (XScale) family of processors.
  366. config ARCH_IOP32X
  367. bool "IOP32x-based"
  368. depends on MMU
  369. select CPU_XSCALE
  370. select PLAT_IOP
  371. select PCI
  372. select ARCH_REQUIRE_GPIOLIB
  373. help
  374. Support for Intel's 80219 and IOP32X (XScale) family of
  375. processors.
  376. config ARCH_IOP33X
  377. bool "IOP33x-based"
  378. depends on MMU
  379. select CPU_XSCALE
  380. select PLAT_IOP
  381. select PCI
  382. select ARCH_REQUIRE_GPIOLIB
  383. help
  384. Support for Intel's IOP33X (XScale) family of processors.
  385. config ARCH_IXP23XX
  386. bool "IXP23XX-based"
  387. depends on MMU
  388. select CPU_XSC3
  389. select PCI
  390. select ARCH_USES_GETTIMEOFFSET
  391. help
  392. Support for Intel's IXP23xx (XScale) family of processors.
  393. config ARCH_IXP2000
  394. bool "IXP2400/2800-based"
  395. depends on MMU
  396. select CPU_XSCALE
  397. select PCI
  398. select ARCH_USES_GETTIMEOFFSET
  399. help
  400. Support for Intel's IXP2400/2800 (XScale) family of processors.
  401. config ARCH_IXP4XX
  402. bool "IXP4xx-based"
  403. depends on MMU
  404. select CLKSRC_MMIO
  405. select CPU_XSCALE
  406. select GENERIC_GPIO
  407. select GENERIC_CLOCKEVENTS
  408. select HAVE_SCHED_CLOCK
  409. select MIGHT_HAVE_PCI
  410. select DMABOUNCE if PCI
  411. help
  412. Support for Intel's IXP4XX (XScale) family of processors.
  413. config ARCH_DOVE
  414. bool "Marvell Dove"
  415. select CPU_V7
  416. select PCI
  417. select ARCH_REQUIRE_GPIOLIB
  418. select GENERIC_CLOCKEVENTS
  419. select PLAT_ORION
  420. help
  421. Support for the Marvell Dove SoC 88AP510
  422. config ARCH_KIRKWOOD
  423. bool "Marvell Kirkwood"
  424. select CPU_FEROCEON
  425. select PCI
  426. select ARCH_REQUIRE_GPIOLIB
  427. select GENERIC_CLOCKEVENTS
  428. select PLAT_ORION
  429. help
  430. Support for the following Marvell Kirkwood series SoCs:
  431. 88F6180, 88F6192 and 88F6281.
  432. config ARCH_LOKI
  433. bool "Marvell Loki (88RC8480)"
  434. select CPU_FEROCEON
  435. select GENERIC_CLOCKEVENTS
  436. select PLAT_ORION
  437. help
  438. Support for the Marvell Loki (88RC8480) SoC.
  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_BARRIERS if CACHE_L2X0
  525. select ARCH_HAS_CPUFREQ
  526. help
  527. This enables support for NVIDIA Tegra based systems (Tegra APX,
  528. Tegra 6xx and Tegra 2 series).
  529. config ARCH_PNX4008
  530. bool "Philips Nexperia PNX4008 Mobile"
  531. select CPU_ARM926T
  532. select CLKDEV_LOOKUP
  533. select ARCH_USES_GETTIMEOFFSET
  534. help
  535. This enables support for Philips PNX4008 mobile platform.
  536. config ARCH_PXA
  537. bool "PXA2xx/PXA3xx-based"
  538. depends on MMU
  539. select ARCH_MTD_XIP
  540. select ARCH_HAS_CPUFREQ
  541. select CLKDEV_LOOKUP
  542. select CLKSRC_MMIO
  543. select ARCH_REQUIRE_GPIOLIB
  544. select GENERIC_CLOCKEVENTS
  545. select HAVE_SCHED_CLOCK
  546. select TICK_ONESHOT
  547. select PLAT_PXA
  548. select SPARSE_IRQ
  549. help
  550. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  551. config ARCH_MSM
  552. bool "Qualcomm MSM"
  553. select HAVE_CLK
  554. select GENERIC_CLOCKEVENTS
  555. select ARCH_REQUIRE_GPIOLIB
  556. select CLKDEV_LOOKUP
  557. help
  558. Support for Qualcomm MSM/QSD based systems. This runs on the
  559. apps processor of the MSM/QSD and depends on a shared memory
  560. interface to the modem processor which runs the baseband
  561. stack and controls some vital subsystems
  562. (clock and power control, etc).
  563. config ARCH_SHMOBILE
  564. bool "Renesas SH-Mobile / R-Mobile"
  565. select HAVE_CLK
  566. select CLKDEV_LOOKUP
  567. select GENERIC_CLOCKEVENTS
  568. select NO_IOPORT
  569. select SPARSE_IRQ
  570. select MULTI_IRQ_HANDLER
  571. help
  572. Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
  573. config ARCH_RPC
  574. bool "RiscPC"
  575. select ARCH_ACORN
  576. select FIQ
  577. select TIMER_ACORN
  578. select ARCH_MAY_HAVE_PC_FDC
  579. select HAVE_PATA_PLATFORM
  580. select ISA_DMA_API
  581. select NO_IOPORT
  582. select ARCH_SPARSEMEM_ENABLE
  583. select ARCH_USES_GETTIMEOFFSET
  584. help
  585. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  586. CD-ROM interface, serial and parallel port, and the floppy drive.
  587. config ARCH_SA1100
  588. bool "SA1100-based"
  589. select CLKSRC_MMIO
  590. select CPU_SA1100
  591. select ISA
  592. select ARCH_SPARSEMEM_ENABLE
  593. select ARCH_MTD_XIP
  594. select ARCH_HAS_CPUFREQ
  595. select CPU_FREQ
  596. select GENERIC_CLOCKEVENTS
  597. select HAVE_CLK
  598. select HAVE_SCHED_CLOCK
  599. select TICK_ONESHOT
  600. select ARCH_REQUIRE_GPIOLIB
  601. help
  602. Support for StrongARM 11x0 based boards.
  603. config ARCH_S3C2410
  604. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
  605. select GENERIC_GPIO
  606. select ARCH_HAS_CPUFREQ
  607. select HAVE_CLK
  608. select ARCH_USES_GETTIMEOFFSET
  609. select HAVE_S3C2410_I2C if I2C
  610. help
  611. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  612. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  613. the Samsung SMDK2410 development board (and derivatives).
  614. Note, the S3C2416 and the S3C2450 are so close that they even share
  615. the same SoC ID code. This means that there is no separate machine
  616. directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
  617. config ARCH_S3C64XX
  618. bool "Samsung S3C64XX"
  619. select PLAT_SAMSUNG
  620. select CPU_V6
  621. select ARM_VIC
  622. select HAVE_CLK
  623. select NO_IOPORT
  624. select ARCH_USES_GETTIMEOFFSET
  625. select ARCH_HAS_CPUFREQ
  626. select ARCH_REQUIRE_GPIOLIB
  627. select SAMSUNG_CLKSRC
  628. select SAMSUNG_IRQ_VIC_TIMER
  629. select SAMSUNG_IRQ_UART
  630. select S3C_GPIO_TRACK
  631. select S3C_GPIO_PULL_UPDOWN
  632. select S3C_GPIO_CFG_S3C24XX
  633. select S3C_GPIO_CFG_S3C64XX
  634. select S3C_DEV_NAND
  635. select USB_ARCH_HAS_OHCI
  636. select SAMSUNG_GPIOLIB_4BIT
  637. select HAVE_S3C2410_I2C if I2C
  638. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  639. help
  640. Samsung S3C64XX series based systems
  641. config ARCH_S5P64X0
  642. bool "Samsung S5P6440 S5P6450"
  643. select CPU_V6
  644. select GENERIC_GPIO
  645. select HAVE_CLK
  646. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  647. select GENERIC_CLOCKEVENTS
  648. select HAVE_SCHED_CLOCK
  649. select HAVE_S3C2410_I2C if I2C
  650. select HAVE_S3C_RTC if RTC_CLASS
  651. help
  652. Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
  653. SMDK6450.
  654. config ARCH_S5PC100
  655. bool "Samsung S5PC100"
  656. select GENERIC_GPIO
  657. select HAVE_CLK
  658. select CPU_V7
  659. select ARM_L1_CACHE_SHIFT_6
  660. select ARCH_USES_GETTIMEOFFSET
  661. select HAVE_S3C2410_I2C if I2C
  662. select HAVE_S3C_RTC if RTC_CLASS
  663. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  664. help
  665. Samsung S5PC100 series based systems
  666. config ARCH_S5PV210
  667. bool "Samsung S5PV210/S5PC110"
  668. select CPU_V7
  669. select ARCH_SPARSEMEM_ENABLE
  670. select GENERIC_GPIO
  671. select HAVE_CLK
  672. select ARM_L1_CACHE_SHIFT_6
  673. select ARCH_HAS_CPUFREQ
  674. select GENERIC_CLOCKEVENTS
  675. select HAVE_SCHED_CLOCK
  676. select HAVE_S3C2410_I2C if I2C
  677. select HAVE_S3C_RTC if RTC_CLASS
  678. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  679. help
  680. Samsung S5PV210/S5PC110 series based systems
  681. config ARCH_EXYNOS4
  682. bool "Samsung EXYNOS4"
  683. select CPU_V7
  684. select ARCH_SPARSEMEM_ENABLE
  685. select GENERIC_GPIO
  686. select HAVE_CLK
  687. select ARCH_HAS_CPUFREQ
  688. select GENERIC_CLOCKEVENTS
  689. select HAVE_S3C_RTC if RTC_CLASS
  690. select HAVE_S3C2410_I2C if I2C
  691. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  692. help
  693. Samsung EXYNOS4 series based systems
  694. config ARCH_SHARK
  695. bool "Shark"
  696. select CPU_SA110
  697. select ISA
  698. select ISA_DMA
  699. select ZONE_DMA
  700. select PCI
  701. select ARCH_USES_GETTIMEOFFSET
  702. help
  703. Support for the StrongARM based Digital DNARD machine, also known
  704. as "Shark" (<http://www.shark-linux.de/shark.html>).
  705. config ARCH_TCC_926
  706. bool "Telechips TCC ARM926-based systems"
  707. select CLKSRC_MMIO
  708. select CPU_ARM926T
  709. select HAVE_CLK
  710. select CLKDEV_LOOKUP
  711. select GENERIC_CLOCKEVENTS
  712. help
  713. Support for Telechips TCC ARM926-based systems.
  714. config ARCH_U300
  715. bool "ST-Ericsson U300 Series"
  716. depends on MMU
  717. select CLKSRC_MMIO
  718. select CPU_ARM926T
  719. select HAVE_SCHED_CLOCK
  720. select HAVE_TCM
  721. select ARM_AMBA
  722. select ARM_VIC
  723. select GENERIC_CLOCKEVENTS
  724. select CLKDEV_LOOKUP
  725. select GENERIC_GPIO
  726. help
  727. Support for ST-Ericsson U300 series mobile platforms.
  728. config ARCH_U8500
  729. bool "ST-Ericsson U8500 Series"
  730. select CPU_V7
  731. select ARM_AMBA
  732. select GENERIC_CLOCKEVENTS
  733. select CLKDEV_LOOKUP
  734. select ARCH_REQUIRE_GPIOLIB
  735. select ARCH_HAS_CPUFREQ
  736. help
  737. Support for ST-Ericsson's Ux500 architecture
  738. config ARCH_NOMADIK
  739. bool "STMicroelectronics Nomadik"
  740. select ARM_AMBA
  741. select ARM_VIC
  742. select CPU_ARM926T
  743. select CLKDEV_LOOKUP
  744. select GENERIC_CLOCKEVENTS
  745. select ARCH_REQUIRE_GPIOLIB
  746. help
  747. Support for the Nomadik platform by ST-Ericsson
  748. config ARCH_DAVINCI
  749. bool "TI DaVinci"
  750. select GENERIC_CLOCKEVENTS
  751. select ARCH_REQUIRE_GPIOLIB
  752. select ZONE_DMA
  753. select HAVE_IDE
  754. select CLKDEV_LOOKUP
  755. select GENERIC_ALLOCATOR
  756. select GENERIC_IRQ_CHIP
  757. select ARCH_HAS_HOLES_MEMORYMODEL
  758. help
  759. Support for TI's DaVinci platform.
  760. config ARCH_OMAP
  761. bool "TI OMAP"
  762. select HAVE_CLK
  763. select ARCH_REQUIRE_GPIOLIB
  764. select ARCH_HAS_CPUFREQ
  765. select GENERIC_CLOCKEVENTS
  766. select HAVE_SCHED_CLOCK
  767. select ARCH_HAS_HOLES_MEMORYMODEL
  768. help
  769. Support for TI's OMAP platform (OMAP1/2/3/4).
  770. config PLAT_SPEAR
  771. bool "ST SPEAr"
  772. select ARM_AMBA
  773. select ARCH_REQUIRE_GPIOLIB
  774. select CLKDEV_LOOKUP
  775. select CLKSRC_MMIO
  776. select GENERIC_CLOCKEVENTS
  777. select HAVE_CLK
  778. help
  779. Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
  780. config ARCH_VT8500
  781. bool "VIA/WonderMedia 85xx"
  782. select CPU_ARM926T
  783. select GENERIC_GPIO
  784. select ARCH_HAS_CPUFREQ
  785. select GENERIC_CLOCKEVENTS
  786. select ARCH_REQUIRE_GPIOLIB
  787. select HAVE_PWM
  788. help
  789. Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
  790. config ARCH_ZYNQ
  791. bool "Xilinx Zynq ARM Cortex A9 Platform"
  792. select CPU_V7
  793. select GENERIC_TIME
  794. select GENERIC_CLOCKEVENTS
  795. select CLKDEV_LOOKUP
  796. select ARM_GIC
  797. select ARM_AMBA
  798. select ICST
  799. select USE_OF
  800. help
  801. Support for Xilinx Zynq ARM Cortex A9 Platform
  802. endchoice
  803. #
  804. # This is sorted alphabetically by mach-* pathname. However, plat-*
  805. # Kconfigs may be included either alphabetically (according to the
  806. # plat- suffix) or along side the corresponding mach-* source.
  807. #
  808. source "arch/arm/mach-at91/Kconfig"
  809. source "arch/arm/mach-bcmring/Kconfig"
  810. source "arch/arm/mach-clps711x/Kconfig"
  811. source "arch/arm/mach-cns3xxx/Kconfig"
  812. source "arch/arm/mach-davinci/Kconfig"
  813. source "arch/arm/mach-dove/Kconfig"
  814. source "arch/arm/mach-ep93xx/Kconfig"
  815. source "arch/arm/mach-footbridge/Kconfig"
  816. source "arch/arm/mach-gemini/Kconfig"
  817. source "arch/arm/mach-h720x/Kconfig"
  818. source "arch/arm/mach-integrator/Kconfig"
  819. source "arch/arm/mach-iop32x/Kconfig"
  820. source "arch/arm/mach-iop33x/Kconfig"
  821. source "arch/arm/mach-iop13xx/Kconfig"
  822. source "arch/arm/mach-ixp4xx/Kconfig"
  823. source "arch/arm/mach-ixp2000/Kconfig"
  824. source "arch/arm/mach-ixp23xx/Kconfig"
  825. source "arch/arm/mach-kirkwood/Kconfig"
  826. source "arch/arm/mach-ks8695/Kconfig"
  827. source "arch/arm/mach-loki/Kconfig"
  828. source "arch/arm/mach-lpc32xx/Kconfig"
  829. source "arch/arm/mach-msm/Kconfig"
  830. source "arch/arm/mach-mv78xx0/Kconfig"
  831. source "arch/arm/plat-mxc/Kconfig"
  832. source "arch/arm/mach-mxs/Kconfig"
  833. source "arch/arm/mach-netx/Kconfig"
  834. source "arch/arm/mach-nomadik/Kconfig"
  835. source "arch/arm/plat-nomadik/Kconfig"
  836. source "arch/arm/mach-nuc93x/Kconfig"
  837. source "arch/arm/plat-omap/Kconfig"
  838. source "arch/arm/mach-omap1/Kconfig"
  839. source "arch/arm/mach-omap2/Kconfig"
  840. source "arch/arm/mach-orion5x/Kconfig"
  841. source "arch/arm/mach-pxa/Kconfig"
  842. source "arch/arm/plat-pxa/Kconfig"
  843. source "arch/arm/mach-mmp/Kconfig"
  844. source "arch/arm/mach-realview/Kconfig"
  845. source "arch/arm/mach-sa1100/Kconfig"
  846. source "arch/arm/plat-samsung/Kconfig"
  847. source "arch/arm/plat-s3c24xx/Kconfig"
  848. source "arch/arm/plat-s5p/Kconfig"
  849. source "arch/arm/plat-spear/Kconfig"
  850. source "arch/arm/plat-tcc/Kconfig"
  851. if ARCH_S3C2410
  852. source "arch/arm/mach-s3c2400/Kconfig"
  853. source "arch/arm/mach-s3c2410/Kconfig"
  854. source "arch/arm/mach-s3c2412/Kconfig"
  855. source "arch/arm/mach-s3c2416/Kconfig"
  856. source "arch/arm/mach-s3c2440/Kconfig"
  857. source "arch/arm/mach-s3c2443/Kconfig"
  858. endif
  859. if ARCH_S3C64XX
  860. source "arch/arm/mach-s3c64xx/Kconfig"
  861. endif
  862. source "arch/arm/mach-s5p64x0/Kconfig"
  863. source "arch/arm/mach-s5pc100/Kconfig"
  864. source "arch/arm/mach-s5pv210/Kconfig"
  865. source "arch/arm/mach-exynos4/Kconfig"
  866. source "arch/arm/mach-shmobile/Kconfig"
  867. source "arch/arm/mach-tegra/Kconfig"
  868. source "arch/arm/mach-u300/Kconfig"
  869. source "arch/arm/mach-ux500/Kconfig"
  870. source "arch/arm/mach-versatile/Kconfig"
  871. source "arch/arm/mach-vexpress/Kconfig"
  872. source "arch/arm/plat-versatile/Kconfig"
  873. source "arch/arm/mach-vt8500/Kconfig"
  874. source "arch/arm/mach-w90x900/Kconfig"
  875. # Definitions to make life easier
  876. config ARCH_ACORN
  877. bool
  878. config PLAT_IOP
  879. bool
  880. select GENERIC_CLOCKEVENTS
  881. select HAVE_SCHED_CLOCK
  882. config PLAT_ORION
  883. bool
  884. select CLKSRC_MMIO
  885. select GENERIC_IRQ_CHIP
  886. select HAVE_SCHED_CLOCK
  887. config PLAT_PXA
  888. bool
  889. config PLAT_VERSATILE
  890. bool
  891. config ARM_TIMER_SP804
  892. bool
  893. select CLKSRC_MMIO
  894. source arch/arm/mm/Kconfig
  895. config IWMMXT
  896. bool "Enable iWMMXt support"
  897. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
  898. default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
  899. help
  900. Enable support for iWMMXt context switching at run time if
  901. running on a CPU that supports it.
  902. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  903. config XSCALE_PMU
  904. bool
  905. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  906. default y
  907. config CPU_HAS_PMU
  908. depends on (CPU_V6 || CPU_V6K || CPU_V7 || XSCALE_PMU) && \
  909. (!ARCH_OMAP3 || OMAP3_EMU)
  910. default y
  911. bool
  912. config MULTI_IRQ_HANDLER
  913. bool
  914. help
  915. Allow each machine to specify it's own IRQ handler at run time.
  916. if !MMU
  917. source "arch/arm/Kconfig-nommu"
  918. endif
  919. config ARM_ERRATA_411920
  920. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  921. depends on CPU_V6 || CPU_V6K
  922. help
  923. Invalidation of the Instruction Cache operation can
  924. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  925. It does not affect the MPCore. This option enables the ARM Ltd.
  926. recommended workaround.
  927. config ARM_ERRATA_430973
  928. bool "ARM errata: Stale prediction on replaced interworking branch"
  929. depends on CPU_V7
  930. help
  931. This option enables the workaround for the 430973 Cortex-A8
  932. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  933. interworking branch is replaced with another code sequence at the
  934. same virtual address, whether due to self-modifying code or virtual
  935. to physical address re-mapping, Cortex-A8 does not recover from the
  936. stale interworking branch prediction. This results in Cortex-A8
  937. executing the new code sequence in the incorrect ARM or Thumb state.
  938. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  939. and also flushes the branch target cache at every context switch.
  940. Note that setting specific bits in the ACTLR register may not be
  941. available in non-secure mode.
  942. config ARM_ERRATA_458693
  943. bool "ARM errata: Processor deadlock when a false hazard is created"
  944. depends on CPU_V7
  945. help
  946. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  947. erratum. For very specific sequences of memory operations, it is
  948. possible for a hazard condition intended for a cache line to instead
  949. be incorrectly associated with a different cache line. This false
  950. hazard might then cause a processor deadlock. The workaround enables
  951. the L1 caching of the NEON accesses and disables the PLD instruction
  952. in the ACTLR register. Note that setting specific bits in the ACTLR
  953. register may not be available in non-secure mode.
  954. config ARM_ERRATA_460075
  955. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  956. depends on CPU_V7
  957. help
  958. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  959. erratum. Any asynchronous access to the L2 cache may encounter a
  960. situation in which recent store transactions to the L2 cache are lost
  961. and overwritten with stale memory contents from external memory. The
  962. workaround disables the write-allocate mode for the L2 cache via the
  963. ACTLR register. Note that setting specific bits in the ACTLR register
  964. may not be available in non-secure mode.
  965. config ARM_ERRATA_742230
  966. bool "ARM errata: DMB operation may be faulty"
  967. depends on CPU_V7 && SMP
  968. help
  969. This option enables the workaround for the 742230 Cortex-A9
  970. (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
  971. between two write operations may not ensure the correct visibility
  972. ordering of the two writes. This workaround sets a specific bit in
  973. the diagnostic register of the Cortex-A9 which causes the DMB
  974. instruction to behave as a DSB, ensuring the correct behaviour of
  975. the two writes.
  976. config ARM_ERRATA_742231
  977. bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
  978. depends on CPU_V7 && SMP
  979. help
  980. This option enables the workaround for the 742231 Cortex-A9
  981. (r2p0..r2p2) erratum. Under certain conditions, specific to the
  982. Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
  983. accessing some data located in the same cache line, may get corrupted
  984. data due to bad handling of the address hazard when the line gets
  985. replaced from one of the CPUs at the same time as another CPU is
  986. accessing it. This workaround sets specific bits in the diagnostic
  987. register of the Cortex-A9 which reduces the linefill issuing
  988. capabilities of the processor.
  989. config PL310_ERRATA_588369
  990. bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
  991. depends on CACHE_L2X0
  992. help
  993. The PL310 L2 cache controller implements three types of Clean &
  994. Invalidate maintenance operations: by Physical Address
  995. (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
  996. They are architecturally defined to behave as the execution of a
  997. clean operation followed immediately by an invalidate operation,
  998. both performing to the same memory location. This functionality
  999. is not correctly implemented in PL310 as clean lines are not
  1000. invalidated as a result of these operations.
  1001. config ARM_ERRATA_720789
  1002. bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
  1003. depends on CPU_V7 && SMP
  1004. help
  1005. This option enables the workaround for the 720789 Cortex-A9 (prior to
  1006. r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
  1007. broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
  1008. As a consequence of this erratum, some TLB entries which should be
  1009. invalidated are not, resulting in an incoherency in the system page
  1010. tables. The workaround changes the TLB flushing routines to invalidate
  1011. entries regardless of the ASID.
  1012. config PL310_ERRATA_727915
  1013. bool "Background Clean & Invalidate by Way operation can cause data corruption"
  1014. depends on CACHE_L2X0
  1015. help
  1016. PL310 implements the Clean & Invalidate by Way L2 cache maintenance
  1017. operation (offset 0x7FC). This operation runs in background so that
  1018. PL310 can handle normal accesses while it is in progress. Under very
  1019. rare circumstances, due to this erratum, write data can be lost when
  1020. PL310 treats a cacheable write transaction during a Clean &
  1021. Invalidate by Way operation.
  1022. config ARM_ERRATA_743622
  1023. bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
  1024. depends on CPU_V7
  1025. help
  1026. This option enables the workaround for the 743622 Cortex-A9
  1027. (r2p0..r2p2) erratum. Under very rare conditions, a faulty
  1028. optimisation in the Cortex-A9 Store Buffer may lead to data
  1029. corruption. This workaround sets a specific bit in the diagnostic
  1030. register of the Cortex-A9 which disables the Store Buffer
  1031. optimisation, preventing the defect from occurring. This has no
  1032. visible impact on the overall performance or power consumption of the
  1033. processor.
  1034. config ARM_ERRATA_751472
  1035. bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
  1036. depends on CPU_V7 && SMP
  1037. help
  1038. This option enables the workaround for the 751472 Cortex-A9 (prior
  1039. to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
  1040. completion of a following broadcasted operation if the second
  1041. operation is received by a CPU before the ICIALLUIS has completed,
  1042. potentially leading to corrupted entries in the cache or TLB.
  1043. config ARM_ERRATA_753970
  1044. bool "ARM errata: cache sync operation may be faulty"
  1045. depends on CACHE_PL310
  1046. help
  1047. This option enables the workaround for the 753970 PL310 (r3p0) erratum.
  1048. Under some condition the effect of cache sync operation on
  1049. the store buffer still remains when the operation completes.
  1050. This means that the store buffer is always asked to drain and
  1051. this prevents it from merging any further writes. The workaround
  1052. is to replace the normal offset of cache sync operation (0x730)
  1053. by another offset targeting an unmapped PL310 register 0x740.
  1054. This has the same effect as the cache sync operation: store buffer
  1055. drain and waiting for all buffers empty.
  1056. config ARM_ERRATA_754322
  1057. bool "ARM errata: possible faulty MMU translations following an ASID switch"
  1058. depends on CPU_V7
  1059. help
  1060. This option enables the workaround for the 754322 Cortex-A9 (r2p*,
  1061. r3p*) erratum. A speculative memory access may cause a page table walk
  1062. which starts prior to an ASID switch but completes afterwards. This
  1063. can populate the micro-TLB with a stale entry which may be hit with
  1064. the new ASID. This workaround places two dsb instructions in the mm
  1065. switching code so that no page table walks can cross the ASID switch.
  1066. config ARM_ERRATA_754327
  1067. bool "ARM errata: no automatic Store Buffer drain"
  1068. depends on CPU_V7 && SMP
  1069. help
  1070. This option enables the workaround for the 754327 Cortex-A9 (prior to
  1071. r2p0) erratum. The Store Buffer does not have any automatic draining
  1072. mechanism and therefore a livelock may occur if an external agent
  1073. continuously polls a memory location waiting to observe an update.
  1074. This workaround defines cpu_relax() as smp_mb(), preventing correctly
  1075. written polling loops from denying visibility of updates to memory.
  1076. endmenu
  1077. source "arch/arm/common/Kconfig"
  1078. menu "Bus support"
  1079. config ARM_AMBA
  1080. bool
  1081. config ISA
  1082. bool
  1083. help
  1084. Find out whether you have ISA slots on your motherboard. ISA is the
  1085. name of a bus system, i.e. the way the CPU talks to the other stuff
  1086. inside your box. Other bus systems are PCI, EISA, MicroChannel
  1087. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  1088. newer boards don't support it. If you have ISA, say Y, otherwise N.
  1089. # Select ISA DMA controller support
  1090. config ISA_DMA
  1091. bool
  1092. select ISA_DMA_API
  1093. # Select ISA DMA interface
  1094. config ISA_DMA_API
  1095. bool
  1096. config PCI
  1097. bool "PCI support" if MIGHT_HAVE_PCI
  1098. help
  1099. Find out whether you have a PCI motherboard. PCI is the name of a
  1100. bus system, i.e. the way the CPU talks to the other stuff inside
  1101. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  1102. VESA. If you have PCI, say Y, otherwise N.
  1103. config PCI_DOMAINS
  1104. bool
  1105. depends on PCI
  1106. config PCI_NANOENGINE
  1107. bool "BSE nanoEngine PCI support"
  1108. depends on SA1100_NANOENGINE
  1109. help
  1110. Enable PCI on the BSE nanoEngine board.
  1111. config PCI_SYSCALL
  1112. def_bool PCI
  1113. # Select the host bridge type
  1114. config PCI_HOST_VIA82C505
  1115. bool
  1116. depends on PCI && ARCH_SHARK
  1117. default y
  1118. config PCI_HOST_ITE8152
  1119. bool
  1120. depends on PCI && MACH_ARMCORE
  1121. default y
  1122. select DMABOUNCE
  1123. source "drivers/pci/Kconfig"
  1124. source "drivers/pcmcia/Kconfig"
  1125. endmenu
  1126. menu "Kernel Features"
  1127. source "kernel/time/Kconfig"
  1128. config SMP
  1129. bool "Symmetric Multi-Processing"
  1130. depends on CPU_V6K || CPU_V7
  1131. depends on GENERIC_CLOCKEVENTS
  1132. depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
  1133. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
  1134. ARCH_EXYNOS4 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
  1135. ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE
  1136. select USE_GENERIC_SMP_HELPERS
  1137. select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
  1138. help
  1139. This enables support for systems with more than one CPU. If you have
  1140. a system with only one CPU, like most personal computers, say N. If
  1141. you have a system with more than one CPU, say Y.
  1142. If you say N here, the kernel will run on single and multiprocessor
  1143. machines, but will use only one CPU of a multiprocessor machine. If
  1144. you say Y here, the kernel will run on many, but not all, single
  1145. processor machines. On a single processor machine, the kernel will
  1146. run faster if you say N here.
  1147. See also <file:Documentation/i386/IO-APIC.txt>,
  1148. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  1149. <http://tldp.org/HOWTO/SMP-HOWTO.html>.
  1150. If you don't know what to do here, say N.
  1151. config SMP_ON_UP
  1152. bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
  1153. depends on EXPERIMENTAL
  1154. depends on SMP && !XIP_KERNEL
  1155. default y
  1156. help
  1157. SMP kernels contain instructions which fail on non-SMP processors.
  1158. Enabling this option allows the kernel to modify itself to make
  1159. these instructions safe. Disabling it allows about 1K of space
  1160. savings.
  1161. If you don't know what to do here, say Y.
  1162. config HAVE_ARM_SCU
  1163. bool
  1164. depends on SMP
  1165. help
  1166. This option enables support for the ARM system coherency unit
  1167. config HAVE_ARM_TWD
  1168. bool
  1169. depends on SMP
  1170. select TICK_ONESHOT
  1171. help
  1172. This options enables support for the ARM timer and watchdog unit
  1173. choice
  1174. prompt "Memory split"
  1175. default VMSPLIT_3G
  1176. help
  1177. Select the desired split between kernel and user memory.
  1178. If you are not absolutely sure what you are doing, leave this
  1179. option alone!
  1180. config VMSPLIT_3G
  1181. bool "3G/1G user/kernel split"
  1182. config VMSPLIT_2G
  1183. bool "2G/2G user/kernel split"
  1184. config VMSPLIT_1G
  1185. bool "1G/3G user/kernel split"
  1186. endchoice
  1187. config PAGE_OFFSET
  1188. hex
  1189. default 0x40000000 if VMSPLIT_1G
  1190. default 0x80000000 if VMSPLIT_2G
  1191. default 0xC0000000
  1192. config NR_CPUS
  1193. int "Maximum number of CPUs (2-32)"
  1194. range 2 32
  1195. depends on SMP
  1196. default "4"
  1197. config HOTPLUG_CPU
  1198. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  1199. depends on SMP && HOTPLUG && EXPERIMENTAL
  1200. help
  1201. Say Y here to experiment with turning CPUs off and on. CPUs
  1202. can be controlled through /sys/devices/system/cpu.
  1203. config LOCAL_TIMERS
  1204. bool "Use local timer interrupts"
  1205. depends on SMP
  1206. default y
  1207. select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
  1208. help
  1209. Enable support for local timers on SMP platforms, rather then the
  1210. legacy IPI broadcast method. Local timers allows the system
  1211. accounting to be spread across the timer interval, preventing a
  1212. "thundering herd" at every timer tick.
  1213. source kernel/Kconfig.preempt
  1214. config HZ
  1215. int
  1216. default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
  1217. ARCH_S5PV210 || ARCH_EXYNOS4
  1218. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  1219. default AT91_TIMER_HZ if ARCH_AT91
  1220. default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
  1221. default 100
  1222. config THUMB2_KERNEL
  1223. bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
  1224. depends on CPU_V7 && !CPU_V6 && !CPU_V6K && EXPERIMENTAL
  1225. select AEABI
  1226. select ARM_ASM_UNIFIED
  1227. help
  1228. By enabling this option, the kernel will be compiled in
  1229. Thumb-2 mode. A compiler/assembler that understand the unified
  1230. ARM-Thumb syntax is needed.
  1231. If unsure, say N.
  1232. config THUMB2_AVOID_R_ARM_THM_JUMP11
  1233. bool "Work around buggy Thumb-2 short branch relocations in gas"
  1234. depends on THUMB2_KERNEL && MODULES
  1235. default y
  1236. help
  1237. Various binutils versions can resolve Thumb-2 branches to
  1238. locally-defined, preemptible global symbols as short-range "b.n"
  1239. branch instructions.
  1240. This is a problem, because there's no guarantee the final
  1241. destination of the symbol, or any candidate locations for a
  1242. trampoline, are within range of the branch. For this reason, the
  1243. kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
  1244. relocation in modules at all, and it makes little sense to add
  1245. support.
  1246. The symptom is that the kernel fails with an "unsupported
  1247. relocation" error when loading some modules.
  1248. Until fixed tools are available, passing
  1249. -fno-optimize-sibling-calls to gcc should prevent gcc generating
  1250. code which hits this problem, at the cost of a bit of extra runtime
  1251. stack usage in some cases.
  1252. The problem is described in more detail at:
  1253. https://bugs.launchpad.net/binutils-linaro/+bug/725126
  1254. Only Thumb-2 kernels are affected.
  1255. Unless you are sure your tools don't have this problem, say Y.
  1256. config ARM_ASM_UNIFIED
  1257. bool
  1258. config AEABI
  1259. bool "Use the ARM EABI to compile the kernel"
  1260. help
  1261. This option allows for the kernel to be compiled using the latest
  1262. ARM ABI (aka EABI). This is only useful if you are using a user
  1263. space environment that is also compiled with EABI.
  1264. Since there are major incompatibilities between the legacy ABI and
  1265. EABI, especially with regard to structure member alignment, this
  1266. option also changes the kernel syscall calling convention to
  1267. disambiguate both ABIs and allow for backward compatibility support
  1268. (selected with CONFIG_OABI_COMPAT).
  1269. To use this you need GCC version 4.0.0 or later.
  1270. config OABI_COMPAT
  1271. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  1272. depends on AEABI && EXPERIMENTAL && !THUMB2_KERNEL
  1273. default y
  1274. help
  1275. This option preserves the old syscall interface along with the
  1276. new (ARM EABI) one. It also provides a compatibility layer to
  1277. intercept syscalls that have structure arguments which layout
  1278. in memory differs between the legacy ABI and the new ARM EABI
  1279. (only for non "thumb" binaries). This option adds a tiny
  1280. overhead to all syscalls and produces a slightly larger kernel.
  1281. If you know you'll be using only pure EABI user space then you
  1282. can say N here. If this option is not selected and you attempt
  1283. to execute a legacy ABI binary then the result will be
  1284. UNPREDICTABLE (in fact it can be predicted that it won't work
  1285. at all). If in doubt say Y.
  1286. config ARCH_HAS_HOLES_MEMORYMODEL
  1287. bool
  1288. config ARCH_SPARSEMEM_ENABLE
  1289. bool
  1290. config ARCH_SPARSEMEM_DEFAULT
  1291. def_bool ARCH_SPARSEMEM_ENABLE
  1292. config ARCH_SELECT_MEMORY_MODEL
  1293. def_bool ARCH_SPARSEMEM_ENABLE
  1294. config HAVE_ARCH_PFN_VALID
  1295. def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
  1296. config HIGHMEM
  1297. bool "High Memory Support"
  1298. depends on MMU
  1299. help
  1300. The address space of ARM processors is only 4 Gigabytes large
  1301. and it has to accommodate user address space, kernel address
  1302. space as well as some memory mapped IO. That means that, if you
  1303. have a large amount of physical memory and/or IO, not all of the
  1304. memory can be "permanently mapped" by the kernel. The physical
  1305. memory that is not permanently mapped is called "high memory".
  1306. Depending on the selected kernel/user memory split, minimum
  1307. vmalloc space and actual amount of RAM, you may not need this
  1308. option which should result in a slightly faster kernel.
  1309. If unsure, say n.
  1310. config HIGHPTE
  1311. bool "Allocate 2nd-level pagetables from highmem"
  1312. depends on HIGHMEM
  1313. config HW_PERF_EVENTS
  1314. bool "Enable hardware performance counter support for perf events"
  1315. depends on PERF_EVENTS && CPU_HAS_PMU
  1316. default y
  1317. help
  1318. Enable hardware performance counter support for perf events. If
  1319. disabled, perf events will use software events only.
  1320. source "mm/Kconfig"
  1321. config FORCE_MAX_ZONEORDER
  1322. int "Maximum zone order" if ARCH_SHMOBILE
  1323. range 11 64 if ARCH_SHMOBILE
  1324. default "9" if SA1111
  1325. default "11"
  1326. help
  1327. The kernel memory allocator divides physically contiguous memory
  1328. blocks into "zones", where each zone is a power of two number of
  1329. pages. This option selects the largest power of two that the kernel
  1330. keeps in the memory allocator. If you need to allocate very large
  1331. blocks of physically contiguous memory, then you may need to
  1332. increase this value.
  1333. This config option is actually maximum order plus one. For example,
  1334. a value of 11 means that the largest free memory block is 2^10 pages.
  1335. config LEDS
  1336. bool "Timer and CPU usage LEDs"
  1337. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  1338. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  1339. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  1340. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  1341. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  1342. ARCH_AT91 || ARCH_DAVINCI || \
  1343. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  1344. help
  1345. If you say Y here, the LEDs on your machine will be used
  1346. to provide useful information about your current system status.
  1347. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  1348. be able to select which LEDs are active using the options below. If
  1349. you are compiling a kernel for the EBSA-110 or the LART however, the
  1350. red LED will simply flash regularly to indicate that the system is
  1351. still functional. It is safe to say Y here if you have a CATS
  1352. system, but the driver will do nothing.
  1353. config LEDS_TIMER
  1354. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  1355. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1356. || MACH_OMAP_PERSEUS2
  1357. depends on LEDS
  1358. depends on !GENERIC_CLOCKEVENTS
  1359. default y if ARCH_EBSA110
  1360. help
  1361. If you say Y here, one of the system LEDs (the green one on the
  1362. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1363. will flash regularly to indicate that the system is still
  1364. operational. This is mainly useful to kernel hackers who are
  1365. debugging unstable kernels.
  1366. The LART uses the same LED for both Timer LED and CPU usage LED
  1367. functions. You may choose to use both, but the Timer LED function
  1368. will overrule the CPU usage LED.
  1369. config LEDS_CPU
  1370. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1371. !ARCH_OMAP) \
  1372. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1373. || MACH_OMAP_PERSEUS2
  1374. depends on LEDS
  1375. help
  1376. If you say Y here, the red LED will be used to give a good real
  1377. time indication of CPU usage, by lighting whenever the idle task
  1378. is not currently executing.
  1379. The LART uses the same LED for both Timer LED and CPU usage LED
  1380. functions. You may choose to use both, but the Timer LED function
  1381. will overrule the CPU usage LED.
  1382. config ALIGNMENT_TRAP
  1383. bool
  1384. depends on CPU_CP15_MMU
  1385. default y if !ARCH_EBSA110
  1386. select HAVE_PROC_CPU if PROC_FS
  1387. help
  1388. ARM processors cannot fetch/store information which is not
  1389. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1390. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1391. fetch/store instructions will be emulated in software if you say
  1392. here, which has a severe performance impact. This is necessary for
  1393. correct operation of some network protocols. With an IP-only
  1394. configuration it is safe to say N, otherwise say Y.
  1395. config UACCESS_WITH_MEMCPY
  1396. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1397. depends on MMU && EXPERIMENTAL
  1398. default y if CPU_FEROCEON
  1399. help
  1400. Implement faster copy_to_user and clear_user methods for CPU
  1401. cores where a 8-word STM instruction give significantly higher
  1402. memory write throughput than a sequence of individual 32bit stores.
  1403. A possible side effect is a slight increase in scheduling latency
  1404. between threads sharing the same address space if they invoke
  1405. such copy operations with large buffers.
  1406. However, if the CPU data cache is using a write-allocate mode,
  1407. this option is unlikely to provide any performance gain.
  1408. config SECCOMP
  1409. bool
  1410. prompt "Enable seccomp to safely compute untrusted bytecode"
  1411. ---help---
  1412. This kernel feature is useful for number crunching applications
  1413. that may need to compute untrusted bytecode during their
  1414. execution. By using pipes or other transports made available to
  1415. the process as file descriptors supporting the read/write
  1416. syscalls, it's possible to isolate those applications in
  1417. their own address space using seccomp. Once seccomp is
  1418. enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
  1419. and the task is only allowed to execute a few safe syscalls
  1420. defined by each seccomp mode.
  1421. config CC_STACKPROTECTOR
  1422. bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
  1423. depends on EXPERIMENTAL
  1424. help
  1425. This option turns on the -fstack-protector GCC feature. This
  1426. feature puts, at the beginning of functions, a canary value on
  1427. the stack just before the return address, and validates
  1428. the value just before actually returning. Stack based buffer
  1429. overflows (that need to overwrite this return address) now also
  1430. overwrite the canary, which gets detected and the attack is then
  1431. neutralized via a kernel panic.
  1432. This feature requires gcc version 4.2 or above.
  1433. config DEPRECATED_PARAM_STRUCT
  1434. bool "Provide old way to pass kernel parameters"
  1435. help
  1436. This was deprecated in 2001 and announced to live on for 5 years.
  1437. Some old boot loaders still use this way.
  1438. endmenu
  1439. menu "Boot options"
  1440. config USE_OF
  1441. bool "Flattened Device Tree support"
  1442. select OF
  1443. select OF_EARLY_FLATTREE
  1444. help
  1445. Include support for flattened device tree machine descriptions.
  1446. # Compressed boot loader in ROM. Yes, we really want to ask about
  1447. # TEXT and BSS so we preserve their values in the config files.
  1448. config ZBOOT_ROM_TEXT
  1449. hex "Compressed ROM boot loader base address"
  1450. default "0"
  1451. help
  1452. The physical address at which the ROM-able zImage is to be
  1453. placed in the target. Platforms which normally make use of
  1454. ROM-able zImage formats normally set this to a suitable
  1455. value in their defconfig file.
  1456. If ZBOOT_ROM is not enabled, this has no effect.
  1457. config ZBOOT_ROM_BSS
  1458. hex "Compressed ROM boot loader BSS address"
  1459. default "0"
  1460. help
  1461. The base address of an area of read/write memory in the target
  1462. for the ROM-able zImage which must be available while the
  1463. decompressor is running. It must be large enough to hold the
  1464. entire decompressed kernel plus an additional 128 KiB.
  1465. Platforms which normally make use of ROM-able zImage formats
  1466. normally set this to a suitable value in their defconfig file.
  1467. If ZBOOT_ROM is not enabled, this has no effect.
  1468. config ZBOOT_ROM
  1469. bool "Compressed boot loader in ROM/flash"
  1470. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1471. help
  1472. Say Y here if you intend to execute your compressed kernel image
  1473. (zImage) directly from ROM or flash. If unsure, say N.
  1474. config ZBOOT_ROM_MMCIF
  1475. bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
  1476. depends on ZBOOT_ROM && ARCH_SH7372 && EXPERIMENTAL
  1477. help
  1478. Say Y here to include experimental MMCIF loading code in the
  1479. ROM-able zImage. With this enabled it is possible to write the
  1480. the ROM-able zImage kernel image to an MMC card and boot the
  1481. kernel straight from the reset vector. At reset the processor
  1482. Mask ROM will load the first part of the the ROM-able zImage
  1483. which in turn loads the rest the kernel image to RAM using the
  1484. MMCIF hardware block.
  1485. config CMDLINE
  1486. string "Default kernel command string"
  1487. default ""
  1488. help
  1489. On some architectures (EBSA110 and CATS), there is currently no way
  1490. for the boot loader to pass arguments to the kernel. For these
  1491. architectures, you should supply some command-line options at build
  1492. time by entering them here. As a minimum, you should specify the
  1493. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1494. choice
  1495. prompt "Kernel command line type" if CMDLINE != ""
  1496. default CMDLINE_FROM_BOOTLOADER
  1497. config CMDLINE_FROM_BOOTLOADER
  1498. bool "Use bootloader kernel arguments if available"
  1499. help
  1500. Uses the command-line options passed by the boot loader. If
  1501. the boot loader doesn't provide any, the default kernel command
  1502. string provided in CMDLINE will be used.
  1503. config CMDLINE_EXTEND
  1504. bool "Extend bootloader kernel arguments"
  1505. help
  1506. The command-line arguments provided by the boot loader will be
  1507. appended to the default kernel command string.
  1508. config CMDLINE_FORCE
  1509. bool "Always use the default kernel command string"
  1510. help
  1511. Always use the default kernel command string, even if the boot
  1512. loader passes other arguments to the kernel.
  1513. This is useful if you cannot or don't want to change the
  1514. command-line options your boot loader passes to the kernel.
  1515. endchoice
  1516. config XIP_KERNEL
  1517. bool "Kernel Execute-In-Place from ROM"
  1518. depends on !ZBOOT_ROM
  1519. help
  1520. Execute-In-Place allows the kernel to run from non-volatile storage
  1521. directly addressable by the CPU, such as NOR flash. This saves RAM
  1522. space since the text section of the kernel is not loaded from flash
  1523. to RAM. Read-write sections, such as the data section and stack,
  1524. are still copied to RAM. The XIP kernel is not compressed since
  1525. it has to run directly from flash, so it will take more space to
  1526. store it. The flash address used to link the kernel object files,
  1527. and for storing it, is configuration dependent. Therefore, if you
  1528. say Y here, you must know the proper physical address where to
  1529. store the kernel image depending on your own flash memory usage.
  1530. Also note that the make target becomes "make xipImage" rather than
  1531. "make zImage" or "make Image". The final kernel binary to put in
  1532. ROM memory will be arch/arm/boot/xipImage.
  1533. If unsure, say N.
  1534. config XIP_PHYS_ADDR
  1535. hex "XIP Kernel Physical Location"
  1536. depends on XIP_KERNEL
  1537. default "0x00080000"
  1538. help
  1539. This is the physical address in your flash memory the kernel will
  1540. be linked for and stored to. This address is dependent on your
  1541. own flash usage.
  1542. config KEXEC
  1543. bool "Kexec system call (EXPERIMENTAL)"
  1544. depends on EXPERIMENTAL
  1545. help
  1546. kexec is a system call that implements the ability to shutdown your
  1547. current kernel, and to start another kernel. It is like a reboot
  1548. but it is independent of the system firmware. And like a reboot
  1549. you can start any kernel with it, not just Linux.
  1550. It is an ongoing process to be certain the hardware in a machine
  1551. is properly shutdown, so do not be surprised if this code does not
  1552. initially work for you. It may help to enable device hotplugging
  1553. support.
  1554. config ATAGS_PROC
  1555. bool "Export atags in procfs"
  1556. depends on KEXEC
  1557. default y
  1558. help
  1559. Should the atags used to boot the kernel be exported in an "atags"
  1560. file in procfs. Useful with kexec.
  1561. config CRASH_DUMP
  1562. bool "Build kdump crash kernel (EXPERIMENTAL)"
  1563. depends on EXPERIMENTAL
  1564. help
  1565. Generate crash dump after being started by kexec. This should
  1566. be normally only set in special crash dump kernels which are
  1567. loaded in the main kernel with kexec-tools into a specially
  1568. reserved region and then later executed after a crash by
  1569. kdump/kexec. The crash dump kernel must be compiled to a
  1570. memory address not used by the main kernel
  1571. For more details see Documentation/kdump/kdump.txt
  1572. config AUTO_ZRELADDR
  1573. bool "Auto calculation of the decompressed kernel image address"
  1574. depends on !ZBOOT_ROM && !ARCH_U300
  1575. help
  1576. ZRELADDR is the physical address where the decompressed kernel
  1577. image will be placed. If AUTO_ZRELADDR is selected, the address
  1578. will be determined at run-time by masking the current IP with
  1579. 0xf8000000. This assumes the zImage being placed in the first 128MB
  1580. from start of memory.
  1581. endmenu
  1582. menu "CPU Power Management"
  1583. if ARCH_HAS_CPUFREQ
  1584. source "drivers/cpufreq/Kconfig"
  1585. config CPU_FREQ_IMX
  1586. tristate "CPUfreq driver for i.MX CPUs"
  1587. depends on ARCH_MXC && CPU_FREQ
  1588. help
  1589. This enables the CPUfreq driver for i.MX CPUs.
  1590. config CPU_FREQ_SA1100
  1591. bool
  1592. config CPU_FREQ_SA1110
  1593. bool
  1594. config CPU_FREQ_INTEGRATOR
  1595. tristate "CPUfreq driver for ARM Integrator CPUs"
  1596. depends on ARCH_INTEGRATOR && CPU_FREQ
  1597. default y
  1598. help
  1599. This enables the CPUfreq driver for ARM Integrator CPUs.
  1600. For details, take a look at <file:Documentation/cpu-freq>.
  1601. If in doubt, say Y.
  1602. config CPU_FREQ_PXA
  1603. bool
  1604. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1605. default y
  1606. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1607. config CPU_FREQ_S3C64XX
  1608. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1609. depends on CPU_FREQ && CPU_S3C6410
  1610. config CPU_FREQ_S3C
  1611. bool
  1612. help
  1613. Internal configuration node for common cpufreq on Samsung SoC
  1614. config CPU_FREQ_S3C24XX
  1615. bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
  1616. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1617. select CPU_FREQ_S3C
  1618. help
  1619. This enables the CPUfreq driver for the Samsung S3C24XX family
  1620. of CPUs.
  1621. For details, take a look at <file:Documentation/cpu-freq>.
  1622. If in doubt, say N.
  1623. config CPU_FREQ_S3C24XX_PLL
  1624. bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
  1625. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1626. help
  1627. Compile in support for changing the PLL frequency from the
  1628. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1629. after a frequency change, so by default it is not enabled.
  1630. This also means that the PLL tables for the selected CPU(s) will
  1631. be built which may increase the size of the kernel image.
  1632. config CPU_FREQ_S3C24XX_DEBUG
  1633. bool "Debug CPUfreq Samsung driver core"
  1634. depends on CPU_FREQ_S3C24XX
  1635. help
  1636. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1637. config CPU_FREQ_S3C24XX_IODEBUG
  1638. bool "Debug CPUfreq Samsung driver IO timing"
  1639. depends on CPU_FREQ_S3C24XX
  1640. help
  1641. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1642. config CPU_FREQ_S3C24XX_DEBUGFS
  1643. bool "Export debugfs for CPUFreq"
  1644. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1645. help
  1646. Export status information via debugfs.
  1647. endif
  1648. source "drivers/cpuidle/Kconfig"
  1649. endmenu
  1650. menu "Floating point emulation"
  1651. comment "At least one emulation must be selected"
  1652. config FPE_NWFPE
  1653. bool "NWFPE math emulation"
  1654. depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
  1655. ---help---
  1656. Say Y to include the NWFPE floating point emulator in the kernel.
  1657. This is necessary to run most binaries. Linux does not currently
  1658. support floating point hardware so you need to say Y here even if
  1659. your machine has an FPA or floating point co-processor podule.
  1660. You may say N here if you are going to load the Acorn FPEmulator
  1661. early in the bootup.
  1662. config FPE_NWFPE_XP
  1663. bool "Support extended precision"
  1664. depends on FPE_NWFPE
  1665. help
  1666. Say Y to include 80-bit support in the kernel floating-point
  1667. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1668. Note that gcc does not generate 80-bit operations by default,
  1669. so in most cases this option only enlarges the size of the
  1670. floating point emulator without any good reason.
  1671. You almost surely want to say N here.
  1672. config FPE_FASTFPE
  1673. bool "FastFPE math emulation (EXPERIMENTAL)"
  1674. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1675. ---help---
  1676. Say Y here to include the FAST floating point emulator in the kernel.
  1677. This is an experimental much faster emulator which now also has full
  1678. precision for the mantissa. It does not support any exceptions.
  1679. It is very simple, and approximately 3-6 times faster than NWFPE.
  1680. It should be sufficient for most programs. It may be not suitable
  1681. for scientific calculations, but you have to check this for yourself.
  1682. If you do not feel you need a faster FP emulation you should better
  1683. choose NWFPE.
  1684. config VFP
  1685. bool "VFP-format floating point maths"
  1686. depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1687. help
  1688. Say Y to include VFP support code in the kernel. This is needed
  1689. if your hardware includes a VFP unit.
  1690. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1691. release notes and additional status information.
  1692. Say N if your target does not have VFP hardware.
  1693. config VFPv3
  1694. bool
  1695. depends on VFP
  1696. default y if CPU_V7
  1697. config NEON
  1698. bool "Advanced SIMD (NEON) Extension support"
  1699. depends on VFPv3 && CPU_V7
  1700. help
  1701. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1702. Extension.
  1703. endmenu
  1704. menu "Userspace binary formats"
  1705. source "fs/Kconfig.binfmt"
  1706. config ARTHUR
  1707. tristate "RISC OS personality"
  1708. depends on !AEABI
  1709. help
  1710. Say Y here to include the kernel code necessary if you want to run
  1711. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1712. experimental; if this sounds frightening, say N and sleep in peace.
  1713. You can also say M here to compile this support as a module (which
  1714. will be called arthur).
  1715. endmenu
  1716. menu "Power management options"
  1717. source "kernel/power/Kconfig"
  1718. config ARCH_SUSPEND_POSSIBLE
  1719. depends on !ARCH_S5P64X0 && !ARCH_S5PC100
  1720. depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
  1721. CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE
  1722. def_bool y
  1723. endmenu
  1724. source "net/Kconfig"
  1725. source "drivers/Kconfig"
  1726. source "fs/Kconfig"
  1727. source "arch/arm/Kconfig.debug"
  1728. source "security/Kconfig"
  1729. source "crypto/Kconfig"
  1730. source "lib/Kconfig"