1# 2# For a description of the syntax of this configuration file, 3# see Documentation/kbuild/kconfig-language.txt. 4# 5 6mainmenu "Linux Kernel Configuration" 7 8config ARM 9 bool 10 default y 11 select HAVE_AOUT 12 select HAVE_IDE 13 select HAVE_MEMBLOCK 14 select RTC_LIB 15 select SYS_SUPPORTS_APM_EMULATION 16 select GENERIC_ATOMIC64 if (!CPU_32v6K) 17 select HAVE_OPROFILE if (HAVE_PERF_EVENTS) 18 select HAVE_ARCH_KGDB 19 select HAVE_KPROBES if (!XIP_KERNEL) 20 select HAVE_KRETPROBES if (HAVE_KPROBES) 21 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL) 22 select HAVE_GENERIC_DMA_COHERENT 23 select HAVE_KERNEL_GZIP 24 select HAVE_KERNEL_LZO 25 select HAVE_KERNEL_LZMA 26 select HAVE_PERF_EVENTS 27 select PERF_USE_VMALLOC 28 select HAVE_REGS_AND_STACK_ACCESS_API 29 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V7)) 30 help 31 The ARM series is a line of low-power-consumption RISC chip designs 32 licensed by ARM Ltd and targeted at embedded applications and 33 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer 34 manufactured, but legacy ARM-based PC hardware remains popular in 35 Europe. There is an ARM Linux project with a web page at 36 <http://www.arm.linux.org.uk/>. 37 38config HAVE_PWM 39 bool 40 41config SYS_SUPPORTS_APM_EMULATION 42 bool 43 44config GENERIC_GPIO 45 bool 46 47config ARCH_USES_GETTIMEOFFSET 48 bool 49 default n 50 51config GENERIC_CLOCKEVENTS 52 bool 53 54config GENERIC_CLOCKEVENTS_BROADCAST 55 bool 56 depends on GENERIC_CLOCKEVENTS 57 default y if SMP 58 59config HAVE_TCM 60 bool 61 select GENERIC_ALLOCATOR 62 63config HAVE_PROC_CPU 64 bool 65 66config NO_IOPORT 67 bool 68 69config EISA 70 bool 71 ---help--- 72 The Extended Industry Standard Architecture (EISA) bus was 73 developed as an open alternative to the IBM MicroChannel bus. 74 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 80 Say Y here if you are building a kernel for an EISA-based machine. 81 82 Otherwise, say N. 83 84config SBUS 85 bool 86 87config MCA 88 bool 89 help 90 MicroChannel Architecture is found in some IBM PS/2 machines and 91 laptops. It is a bus system similar to PCI or ISA. See 92 <file:Documentation/mca.txt> (and especially the web page given 93 there) before attempting to build an MCA bus kernel. 94 95config GENERIC_HARDIRQS 96 bool 97 default y 98 99config STACKTRACE_SUPPORT 100 bool 101 default y 102 103config HAVE_LATENCYTOP_SUPPORT 104 bool 105 depends on !SMP 106 default y 107 108config LOCKDEP_SUPPORT 109 bool 110 default y 111 112config TRACE_IRQFLAGS_SUPPORT 113 bool 114 default y 115 116config HARDIRQS_SW_RESEND 117 bool 118 default y 119 120config GENERIC_IRQ_PROBE 121 bool 122 default y 123 124config GENERIC_LOCKBREAK 125 bool 126 default y 127 depends on SMP && PREEMPT 128 129config RWSEM_GENERIC_SPINLOCK 130 bool 131 default y 132 133config RWSEM_XCHGADD_ALGORITHM 134 bool 135 136config ARCH_HAS_ILOG2_U32 137 bool 138 139config ARCH_HAS_ILOG2_U64 140 bool 141 142config ARCH_HAS_CPUFREQ 143 bool 144 help 145 Internal node to signify that the ARCH has CPUFREQ support 146 and that the relevant menu configurations are displayed for 147 it. 148 149config GENERIC_HWEIGHT 150 bool 151 default y 152 153config GENERIC_CALIBRATE_DELAY 154 bool 155 default y 156 157config ARCH_MAY_HAVE_PC_FDC 158 bool 159 160config ZONE_DMA 161 bool 162 163config NEED_DMA_MAP_STATE 164 def_bool y 165 166config GENERIC_ISA_DMA 167 bool 168 169config FIQ 170 bool 171 172config ARCH_MTD_XIP 173 bool 174 175config GENERIC_HARDIRQS_NO__DO_IRQ 176 def_bool y 177 178config ARM_L1_CACHE_SHIFT_6 179 bool 180 help 181 Setting ARM L1 cache line size to 64 Bytes. 182 183config VECTORS_BASE 184 hex 185 default 0xffff0000 if MMU || CPU_HIGH_VECTOR 186 default DRAM_BASE if REMAP_VECTORS_TO_RAM 187 default 0x00000000 188 help 189 The base address of exception vectors. 190 191source "init/Kconfig" 192 193source "kernel/Kconfig.freezer" 194 195menu "System Type" 196 197config MMU 198 bool "MMU-based Paged Memory Management Support" 199 default y 200 help 201 Select if you want MMU-based virtualised addressing space 202 support by paged memory management. If unsure, say 'Y'. 203 204# 205# The "ARM system type" choice list is ordered alphabetically by option 206# text. Please add new entries in the option alphabetic order. 207# 208choice 209 prompt "ARM system type" 210 default ARCH_VERSATILE 211 212config ARCH_AAEC2000 213 bool "Agilent AAEC-2000 based" 214 select CPU_ARM920T 215 select ARM_AMBA 216 select HAVE_CLK 217 select ARCH_USES_GETTIMEOFFSET 218 help 219 This enables support for systems based on the Agilent AAEC-2000 220 221config ARCH_INTEGRATOR 222 bool "ARM Ltd. Integrator family" 223 select ARM_AMBA 224 select ARCH_HAS_CPUFREQ 225 select COMMON_CLKDEV 226 select ICST 227 select GENERIC_CLOCKEVENTS 228 select PLAT_VERSATILE 229 help 230 Support for ARM's Integrator platform. 231 232config ARCH_REALVIEW 233 bool "ARM Ltd. RealView family" 234 select ARM_AMBA 235 select COMMON_CLKDEV 236 select ICST 237 select GENERIC_CLOCKEVENTS 238 select ARCH_WANT_OPTIONAL_GPIOLIB 239 select PLAT_VERSATILE 240 select ARM_TIMER_SP804 241 select GPIO_PL061 if GPIOLIB 242 help 243 This enables support for ARM Ltd RealView boards. 244 245config ARCH_VERSATILE 246 bool "ARM Ltd. Versatile family" 247 select ARM_AMBA 248 select ARM_VIC 249 select COMMON_CLKDEV 250 select ICST 251 select GENERIC_CLOCKEVENTS 252 select ARCH_WANT_OPTIONAL_GPIOLIB 253 select PLAT_VERSATILE 254 select ARM_TIMER_SP804 255 help 256 This enables support for ARM Ltd Versatile board. 257 258config ARCH_VEXPRESS 259 bool "ARM Ltd. Versatile Express family" 260 select ARCH_WANT_OPTIONAL_GPIOLIB 261 select ARM_AMBA 262 select ARM_TIMER_SP804 263 select COMMON_CLKDEV 264 select GENERIC_CLOCKEVENTS 265 select HAVE_CLK 266 select ICST 267 select PLAT_VERSATILE 268 help 269 This enables support for the ARM Ltd Versatile Express boards. 270 271config ARCH_AT91 272 bool "Atmel AT91" 273 select ARCH_REQUIRE_GPIOLIB 274 select HAVE_CLK 275 select ARCH_USES_GETTIMEOFFSET 276 help 277 This enables support for systems based on the Atmel AT91RM9200, 278 AT91SAM9 and AT91CAP9 processors. 279 280config ARCH_BCMRING 281 bool "Broadcom BCMRING" 282 depends on MMU 283 select CPU_V6 284 select ARM_AMBA 285 select COMMON_CLKDEV 286 select GENERIC_CLOCKEVENTS 287 select ARCH_WANT_OPTIONAL_GPIOLIB 288 help 289 Support for Broadcom's BCMRing platform. 290 291config ARCH_CLPS711X 292 bool "Cirrus Logic CLPS711x/EP721x-based" 293 select CPU_ARM720T 294 select ARCH_USES_GETTIMEOFFSET 295 help 296 Support for Cirrus Logic 711x/721x based boards. 297 298config ARCH_CNS3XXX 299 bool "Cavium Networks CNS3XXX family" 300 select CPU_V6 301 select GENERIC_CLOCKEVENTS 302 select ARM_GIC 303 select PCI_DOMAINS if PCI 304 help 305 Support for Cavium Networks CNS3XXX platform. 306 307config ARCH_GEMINI 308 bool "Cortina Systems Gemini" 309 select CPU_FA526 310 select ARCH_REQUIRE_GPIOLIB 311 select ARCH_USES_GETTIMEOFFSET 312 help 313 Support for the Cortina Systems Gemini family SoCs 314 315config ARCH_EBSA110 316 bool "EBSA-110" 317 select CPU_SA110 318 select ISA 319 select NO_IOPORT 320 select ARCH_USES_GETTIMEOFFSET 321 help 322 This is an evaluation board for the StrongARM processor available 323 from Digital. It has limited hardware on-board, including an 324 Ethernet interface, two PCMCIA sockets, two serial ports and a 325 parallel port. 326 327config ARCH_EP93XX 328 bool "EP93xx-based" 329 select CPU_ARM920T 330 select ARM_AMBA 331 select ARM_VIC 332 select COMMON_CLKDEV 333 select ARCH_REQUIRE_GPIOLIB 334 select ARCH_HAS_HOLES_MEMORYMODEL 335 select ARCH_USES_GETTIMEOFFSET 336 help 337 This enables support for the Cirrus EP93xx series of CPUs. 338 339config ARCH_FOOTBRIDGE 340 bool "FootBridge" 341 select CPU_SA110 342 select FOOTBRIDGE 343 select ARCH_USES_GETTIMEOFFSET 344 help 345 Support for systems based on the DC21285 companion chip 346 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. 347 348config ARCH_MXC 349 bool "Freescale MXC/iMX-based" 350 select GENERIC_CLOCKEVENTS 351 select ARCH_REQUIRE_GPIOLIB 352 select COMMON_CLKDEV 353 help 354 Support for Freescale MXC/iMX-based family of processors 355 356config ARCH_STMP3XXX 357 bool "Freescale STMP3xxx" 358 select CPU_ARM926T 359 select COMMON_CLKDEV 360 select ARCH_REQUIRE_GPIOLIB 361 select GENERIC_CLOCKEVENTS 362 select USB_ARCH_HAS_EHCI 363 help 364 Support for systems based on the Freescale 3xxx CPUs. 365 366config ARCH_NETX 367 bool "Hilscher NetX based" 368 select CPU_ARM926T 369 select ARM_VIC 370 select GENERIC_CLOCKEVENTS 371 help 372 This enables support for systems based on the Hilscher NetX Soc 373 374config ARCH_H720X 375 bool "Hynix HMS720x-based" 376 select CPU_ARM720T 377 select ISA_DMA_API 378 select ARCH_USES_GETTIMEOFFSET 379 help 380 This enables support for systems based on the Hynix HMS720x 381 382config ARCH_IOP13XX 383 bool "IOP13xx-based" 384 depends on MMU 385 select CPU_XSC3 386 select PLAT_IOP 387 select PCI 388 select ARCH_SUPPORTS_MSI 389 select VMSPLIT_1G 390 help 391 Support for Intel's IOP13XX (XScale) family of processors. 392 393config ARCH_IOP32X 394 bool "IOP32x-based" 395 depends on MMU 396 select CPU_XSCALE 397 select PLAT_IOP 398 select PCI 399 select ARCH_REQUIRE_GPIOLIB 400 help 401 Support for Intel's 80219 and IOP32X (XScale) family of 402 processors. 403 404config ARCH_IOP33X 405 bool "IOP33x-based" 406 depends on MMU 407 select CPU_XSCALE 408 select PLAT_IOP 409 select PCI 410 select ARCH_REQUIRE_GPIOLIB 411 help 412 Support for Intel's IOP33X (XScale) family of processors. 413 414config ARCH_IXP23XX 415 bool "IXP23XX-based" 416 depends on MMU 417 select CPU_XSC3 418 select PCI 419 select ARCH_USES_GETTIMEOFFSET 420 help 421 Support for Intel's IXP23xx (XScale) family of processors. 422 423config ARCH_IXP2000 424 bool "IXP2400/2800-based" 425 depends on MMU 426 select CPU_XSCALE 427 select PCI 428 select ARCH_USES_GETTIMEOFFSET 429 help 430 Support for Intel's IXP2400/2800 (XScale) family of processors. 431 432config ARCH_IXP4XX 433 bool "IXP4xx-based" 434 depends on MMU 435 select CPU_XSCALE 436 select GENERIC_GPIO 437 select GENERIC_CLOCKEVENTS 438 select DMABOUNCE if PCI 439 help 440 Support for Intel's IXP4XX (XScale) family of processors. 441 442config ARCH_DOVE 443 bool "Marvell Dove" 444 select PCI 445 select ARCH_REQUIRE_GPIOLIB 446 select GENERIC_CLOCKEVENTS 447 select PLAT_ORION 448 help 449 Support for the Marvell Dove SoC 88AP510 450 451config ARCH_KIRKWOOD 452 bool "Marvell Kirkwood" 453 select CPU_FEROCEON 454 select PCI 455 select ARCH_REQUIRE_GPIOLIB 456 select GENERIC_CLOCKEVENTS 457 select PLAT_ORION 458 help 459 Support for the following Marvell Kirkwood series SoCs: 460 88F6180, 88F6192 and 88F6281. 461 462config ARCH_LOKI 463 bool "Marvell Loki (88RC8480)" 464 select CPU_FEROCEON 465 select GENERIC_CLOCKEVENTS 466 select PLAT_ORION 467 help 468 Support for the Marvell Loki (88RC8480) SoC. 469 470config ARCH_LPC32XX 471 bool "NXP LPC32XX" 472 select CPU_ARM926T 473 select ARCH_REQUIRE_GPIOLIB 474 select HAVE_IDE 475 select ARM_AMBA 476 select USB_ARCH_HAS_OHCI 477 select COMMON_CLKDEV 478 select GENERIC_TIME 479 select GENERIC_CLOCKEVENTS 480 help 481 Support for the NXP LPC32XX family of processors 482 483config ARCH_MV78XX0 484 bool "Marvell MV78xx0" 485 select CPU_FEROCEON 486 select PCI 487 select ARCH_REQUIRE_GPIOLIB 488 select GENERIC_CLOCKEVENTS 489 select PLAT_ORION 490 help 491 Support for the following Marvell MV78xx0 series SoCs: 492 MV781x0, MV782x0. 493 494config ARCH_ORION5X 495 bool "Marvell Orion" 496 depends on MMU 497 select CPU_FEROCEON 498 select PCI 499 select ARCH_REQUIRE_GPIOLIB 500 select GENERIC_CLOCKEVENTS 501 select PLAT_ORION 502 help 503 Support for the following Marvell Orion 5x series SoCs: 504 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182), 505 Orion-2 (5281), Orion-1-90 (6183). 506 507config ARCH_MMP 508 bool "Marvell PXA168/910/MMP2" 509 depends on MMU 510 select ARCH_REQUIRE_GPIOLIB 511 select COMMON_CLKDEV 512 select GENERIC_CLOCKEVENTS 513 select TICK_ONESHOT 514 select PLAT_PXA 515 help 516 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line. 517 518config ARCH_KS8695 519 bool "Micrel/Kendin KS8695" 520 select CPU_ARM922T 521 select ARCH_REQUIRE_GPIOLIB 522 select ARCH_USES_GETTIMEOFFSET 523 help 524 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based 525 System-on-Chip devices. 526 527config ARCH_NS9XXX 528 bool "NetSilicon NS9xxx" 529 select CPU_ARM926T 530 select GENERIC_GPIO 531 select GENERIC_CLOCKEVENTS 532 select HAVE_CLK 533 help 534 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx 535 System. 536 537 <http://www.digi.com/products/microprocessors/index.jsp> 538 539config ARCH_W90X900 540 bool "Nuvoton W90X900 CPU" 541 select CPU_ARM926T 542 select ARCH_REQUIRE_GPIOLIB 543 select COMMON_CLKDEV 544 select GENERIC_CLOCKEVENTS 545 help 546 Support for Nuvoton (Winbond logic dept.) ARM9 processor, 547 At present, the w90x900 has been renamed nuc900, regarding 548 the ARM series product line, you can login the following 549 link address to know more. 550 551 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/ 552 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller> 553 554config ARCH_NUC93X 555 bool "Nuvoton NUC93X CPU" 556 select CPU_ARM926T 557 select COMMON_CLKDEV 558 help 559 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a 560 low-power and high performance MPEG-4/JPEG multimedia controller chip. 561 562config ARCH_TEGRA 563 bool "NVIDIA Tegra" 564 select GENERIC_TIME 565 select GENERIC_CLOCKEVENTS 566 select GENERIC_GPIO 567 select HAVE_CLK 568 select COMMON_CLKDEV 569 select ARCH_HAS_BARRIERS if CACHE_L2X0 570 help 571 This enables support for NVIDIA Tegra based systems (Tegra APX, 572 Tegra 6xx and Tegra 2 series). 573 574config ARCH_PNX4008 575 bool "Philips Nexperia PNX4008 Mobile" 576 select CPU_ARM926T 577 select COMMON_CLKDEV 578 select ARCH_USES_GETTIMEOFFSET 579 help 580 This enables support for Philips PNX4008 mobile platform. 581 582config ARCH_PXA 583 bool "PXA2xx/PXA3xx-based" 584 depends on MMU 585 select ARCH_MTD_XIP 586 select ARCH_HAS_CPUFREQ 587 select COMMON_CLKDEV 588 select ARCH_REQUIRE_GPIOLIB 589 select GENERIC_CLOCKEVENTS 590 select TICK_ONESHOT 591 select PLAT_PXA 592 help 593 Support for Intel/Marvell's PXA2xx/PXA3xx processor line. 594 595config ARCH_MSM 596 bool "Qualcomm MSM" 597 select HAVE_CLK 598 select GENERIC_CLOCKEVENTS 599 select ARCH_REQUIRE_GPIOLIB 600 help 601 Support for Qualcomm MSM/QSD based systems. This runs on the 602 apps processor of the MSM/QSD and depends on a shared memory 603 interface to the modem processor which runs the baseband 604 stack and controls some vital subsystems 605 (clock and power control, etc). 606 607config ARCH_SHMOBILE 608 bool "Renesas SH-Mobile" 609 help 610 Support for Renesas's SH-Mobile ARM platforms 611 612config ARCH_RPC 613 bool "RiscPC" 614 select ARCH_ACORN 615 select FIQ 616 select TIMER_ACORN 617 select ARCH_MAY_HAVE_PC_FDC 618 select HAVE_PATA_PLATFORM 619 select ISA_DMA_API 620 select NO_IOPORT 621 select ARCH_SPARSEMEM_ENABLE 622 select ARCH_USES_GETTIMEOFFSET 623 help 624 On the Acorn Risc-PC, Linux can support the internal IDE disk and 625 CD-ROM interface, serial and parallel port, and the floppy drive. 626 627config ARCH_SA1100 628 bool "SA1100-based" 629 select CPU_SA1100 630 select ISA 631 select ARCH_SPARSEMEM_ENABLE 632 select ARCH_MTD_XIP 633 select ARCH_HAS_CPUFREQ 634 select CPU_FREQ 635 select GENERIC_CLOCKEVENTS 636 select HAVE_CLK 637 select TICK_ONESHOT 638 select ARCH_REQUIRE_GPIOLIB 639 help 640 Support for StrongARM 11x0 based boards. 641 642config ARCH_S3C2410 643 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450" 644 select GENERIC_GPIO 645 select ARCH_HAS_CPUFREQ 646 select HAVE_CLK 647 select ARCH_USES_GETTIMEOFFSET 648 select HAVE_S3C2410_I2C 649 help 650 Samsung S3C2410X CPU based systems, such as the Simtec Electronics 651 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or 652 the Samsung SMDK2410 development board (and derivatives). 653 654 Note, the S3C2416 and the S3C2450 are so close that they even share 655 the same SoC ID code. This means that there is no seperate machine 656 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first. 657 658config ARCH_S3C64XX 659 bool "Samsung S3C64XX" 660 select PLAT_SAMSUNG 661 select CPU_V6 662 select ARM_VIC 663 select HAVE_CLK 664 select NO_IOPORT 665 select ARCH_USES_GETTIMEOFFSET 666 select ARCH_HAS_CPUFREQ 667 select ARCH_REQUIRE_GPIOLIB 668 select SAMSUNG_CLKSRC 669 select SAMSUNG_IRQ_VIC_TIMER 670 select SAMSUNG_IRQ_UART 671 select S3C_GPIO_TRACK 672 select S3C_GPIO_PULL_UPDOWN 673 select S3C_GPIO_CFG_S3C24XX 674 select S3C_GPIO_CFG_S3C64XX 675 select S3C_DEV_NAND 676 select USB_ARCH_HAS_OHCI 677 select SAMSUNG_GPIOLIB_4BIT 678 select HAVE_S3C2410_I2C 679 select HAVE_S3C2410_WATCHDOG 680 help 681 Samsung S3C64XX series based systems 682 683config ARCH_S5P6440 684 bool "Samsung S5P6440" 685 select CPU_V6 686 select GENERIC_GPIO 687 select HAVE_CLK 688 select HAVE_S3C2410_WATCHDOG 689 select ARCH_USES_GETTIMEOFFSET 690 select HAVE_S3C2410_I2C 691 select HAVE_S3C_RTC 692 help 693 Samsung S5P6440 CPU based systems 694 695config ARCH_S5P6442 696 bool "Samsung S5P6442" 697 select CPU_V6 698 select GENERIC_GPIO 699 select HAVE_CLK 700 select ARCH_USES_GETTIMEOFFSET 701 select HAVE_S3C2410_WATCHDOG 702 help 703 Samsung S5P6442 CPU based systems 704 705config ARCH_S5PC100 706 bool "Samsung S5PC100" 707 select GENERIC_GPIO 708 select HAVE_CLK 709 select CPU_V7 710 select ARM_L1_CACHE_SHIFT_6 711 select ARCH_USES_GETTIMEOFFSET 712 select HAVE_S3C2410_I2C 713 select HAVE_S3C_RTC 714 select HAVE_S3C2410_WATCHDOG 715 help 716 Samsung S5PC100 series based systems 717 718config ARCH_S5PV210 719 bool "Samsung S5PV210/S5PC110" 720 select CPU_V7 721 select GENERIC_GPIO 722 select HAVE_CLK 723 select ARM_L1_CACHE_SHIFT_6 724 select ARCH_USES_GETTIMEOFFSET 725 select HAVE_S3C2410_I2C 726 select HAVE_S3C_RTC 727 select HAVE_S3C2410_WATCHDOG 728 help 729 Samsung S5PV210/S5PC110 series based systems 730 731config ARCH_S5PV310 732 bool "Samsung S5PV310/S5PC210" 733 select CPU_V7 734 select GENERIC_GPIO 735 select HAVE_CLK 736 select GENERIC_CLOCKEVENTS 737 help 738 Samsung S5PV310 series based systems 739 740config ARCH_SHARK 741 bool "Shark" 742 select CPU_SA110 743 select ISA 744 select ISA_DMA 745 select ZONE_DMA 746 select PCI 747 select ARCH_USES_GETTIMEOFFSET 748 help 749 Support for the StrongARM based Digital DNARD machine, also known 750 as "Shark" (<http://www.shark-linux.de/shark.html>). 751 752config ARCH_LH7A40X 753 bool "Sharp LH7A40X" 754 select CPU_ARM922T 755 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM 756 select ARCH_USES_GETTIMEOFFSET 757 help 758 Say Y here for systems based on one of the Sharp LH7A40X 759 System on a Chip processors. These CPUs include an ARM922T 760 core with a wide array of integrated devices for 761 hand-held and low-power applications. 762 763config ARCH_U300 764 bool "ST-Ericsson U300 Series" 765 depends on MMU 766 select CPU_ARM926T 767 select HAVE_TCM 768 select ARM_AMBA 769 select ARM_VIC 770 select GENERIC_CLOCKEVENTS 771 select COMMON_CLKDEV 772 select GENERIC_GPIO 773 help 774 Support for ST-Ericsson U300 series mobile platforms. 775 776config ARCH_U8500 777 bool "ST-Ericsson U8500 Series" 778 select CPU_V7 779 select ARM_AMBA 780 select GENERIC_CLOCKEVENTS 781 select COMMON_CLKDEV 782 select ARCH_REQUIRE_GPIOLIB 783 help 784 Support for ST-Ericsson's Ux500 architecture 785 786config ARCH_NOMADIK 787 bool "STMicroelectronics Nomadik" 788 select ARM_AMBA 789 select ARM_VIC 790 select CPU_ARM926T 791 select COMMON_CLKDEV 792 select GENERIC_CLOCKEVENTS 793 select ARCH_REQUIRE_GPIOLIB 794 help 795 Support for the Nomadik platform by ST-Ericsson 796 797config ARCH_DAVINCI 798 bool "TI DaVinci" 799 select GENERIC_CLOCKEVENTS 800 select ARCH_REQUIRE_GPIOLIB 801 select ZONE_DMA 802 select HAVE_IDE 803 select COMMON_CLKDEV 804 select GENERIC_ALLOCATOR 805 select ARCH_HAS_HOLES_MEMORYMODEL 806 help 807 Support for TI's DaVinci platform. 808 809config ARCH_OMAP 810 bool "TI OMAP" 811 select HAVE_CLK 812 select ARCH_REQUIRE_GPIOLIB 813 select ARCH_HAS_CPUFREQ 814 select GENERIC_CLOCKEVENTS 815 select ARCH_HAS_HOLES_MEMORYMODEL 816 help 817 Support for TI's OMAP platform (OMAP1 and OMAP2). 818 819config PLAT_SPEAR 820 bool "ST SPEAr" 821 select ARM_AMBA 822 select ARCH_REQUIRE_GPIOLIB 823 select COMMON_CLKDEV 824 select GENERIC_CLOCKEVENTS 825 select HAVE_CLK 826 help 827 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx). 828 829endchoice 830 831# 832# This is sorted alphabetically by mach-* pathname. However, plat-* 833# Kconfigs may be included either alphabetically (according to the 834# plat- suffix) or along side the corresponding mach-* source. 835# 836source "arch/arm/mach-aaec2000/Kconfig" 837 838source "arch/arm/mach-at91/Kconfig" 839 840source "arch/arm/mach-bcmring/Kconfig" 841 842source "arch/arm/mach-clps711x/Kconfig" 843 844source "arch/arm/mach-cns3xxx/Kconfig" 845 846source "arch/arm/mach-davinci/Kconfig" 847 848source "arch/arm/mach-dove/Kconfig" 849 850source "arch/arm/mach-ep93xx/Kconfig" 851 852source "arch/arm/mach-footbridge/Kconfig" 853 854source "arch/arm/mach-gemini/Kconfig" 855 856source "arch/arm/mach-h720x/Kconfig" 857 858source "arch/arm/mach-integrator/Kconfig" 859 860source "arch/arm/mach-iop32x/Kconfig" 861 862source "arch/arm/mach-iop33x/Kconfig" 863 864source "arch/arm/mach-iop13xx/Kconfig" 865 866source "arch/arm/mach-ixp4xx/Kconfig" 867 868source "arch/arm/mach-ixp2000/Kconfig" 869 870source "arch/arm/mach-ixp23xx/Kconfig" 871 872source "arch/arm/mach-kirkwood/Kconfig" 873 874source "arch/arm/mach-ks8695/Kconfig" 875 876source "arch/arm/mach-lh7a40x/Kconfig" 877 878source "arch/arm/mach-loki/Kconfig" 879 880source "arch/arm/mach-lpc32xx/Kconfig" 881 882source "arch/arm/mach-msm/Kconfig" 883 884source "arch/arm/mach-mv78xx0/Kconfig" 885 886source "arch/arm/plat-mxc/Kconfig" 887 888source "arch/arm/mach-netx/Kconfig" 889 890source "arch/arm/mach-nomadik/Kconfig" 891source "arch/arm/plat-nomadik/Kconfig" 892 893source "arch/arm/mach-ns9xxx/Kconfig" 894 895source "arch/arm/mach-nuc93x/Kconfig" 896 897source "arch/arm/plat-omap/Kconfig" 898 899source "arch/arm/mach-omap1/Kconfig" 900 901source "arch/arm/mach-omap2/Kconfig" 902 903source "arch/arm/mach-orion5x/Kconfig" 904 905source "arch/arm/mach-pxa/Kconfig" 906source "arch/arm/plat-pxa/Kconfig" 907 908source "arch/arm/mach-mmp/Kconfig" 909 910source "arch/arm/mach-realview/Kconfig" 911 912source "arch/arm/mach-sa1100/Kconfig" 913 914source "arch/arm/plat-samsung/Kconfig" 915source "arch/arm/plat-s3c24xx/Kconfig" 916source "arch/arm/plat-s5p/Kconfig" 917 918source "arch/arm/plat-spear/Kconfig" 919 920if ARCH_S3C2410 921source "arch/arm/mach-s3c2400/Kconfig" 922source "arch/arm/mach-s3c2410/Kconfig" 923source "arch/arm/mach-s3c2412/Kconfig" 924source "arch/arm/mach-s3c2416/Kconfig" 925source "arch/arm/mach-s3c2440/Kconfig" 926source "arch/arm/mach-s3c2443/Kconfig" 927endif 928 929if ARCH_S3C64XX 930source "arch/arm/mach-s3c64xx/Kconfig" 931endif 932 933source "arch/arm/mach-s5p6440/Kconfig" 934 935source "arch/arm/mach-s5p6442/Kconfig" 936 937source "arch/arm/mach-s5pc100/Kconfig" 938 939source "arch/arm/mach-s5pv210/Kconfig" 940 941source "arch/arm/mach-s5pv310/Kconfig" 942 943source "arch/arm/mach-shmobile/Kconfig" 944 945source "arch/arm/plat-stmp3xxx/Kconfig" 946 947source "arch/arm/mach-tegra/Kconfig" 948 949source "arch/arm/mach-u300/Kconfig" 950 951source "arch/arm/mach-ux500/Kconfig" 952 953source "arch/arm/mach-versatile/Kconfig" 954 955source "arch/arm/mach-vexpress/Kconfig" 956 957source "arch/arm/mach-w90x900/Kconfig" 958 959# Definitions to make life easier 960config ARCH_ACORN 961 bool 962 963config PLAT_IOP 964 bool 965 select GENERIC_CLOCKEVENTS 966 967config PLAT_ORION 968 bool 969 970config PLAT_PXA 971 bool 972 973config PLAT_VERSATILE 974 bool 975 976config ARM_TIMER_SP804 977 bool 978 979source arch/arm/mm/Kconfig 980 981config IWMMXT 982 bool "Enable iWMMXt support" 983 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK 984 default y if PXA27x || PXA3xx || ARCH_MMP 985 help 986 Enable support for iWMMXt context switching at run time if 987 running on a CPU that supports it. 988 989# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER 990config XSCALE_PMU 991 bool 992 depends on CPU_XSCALE && !XSCALE_PMU_TIMER 993 default y 994 995config CPU_HAS_PMU 996 depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \ 997 (!ARCH_OMAP3 || OMAP3_EMU) 998 default y 999 bool 1000 1001if !MMU 1002source "arch/arm/Kconfig-nommu" 1003endif 1004 1005config ARM_ERRATA_411920 1006 bool "ARM errata: Invalidation of the Instruction Cache operation can fail" 1007 depends on CPU_V6 && !SMP 1008 help 1009 Invalidation of the Instruction Cache operation can 1010 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176. 1011 It does not affect the MPCore. This option enables the ARM Ltd. 1012 recommended workaround. 1013 1014config ARM_ERRATA_430973 1015 bool "ARM errata: Stale prediction on replaced interworking branch" 1016 depends on CPU_V7 1017 help 1018 This option enables the workaround for the 430973 Cortex-A8 1019 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb 1020 interworking branch is replaced with another code sequence at the 1021 same virtual address, whether due to self-modifying code or virtual 1022 to physical address re-mapping, Cortex-A8 does not recover from the 1023 stale interworking branch prediction. This results in Cortex-A8 1024 executing the new code sequence in the incorrect ARM or Thumb state. 1025 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE 1026 and also flushes the branch target cache at every context switch. 1027 Note that setting specific bits in the ACTLR register may not be 1028 available in non-secure mode. 1029 1030config ARM_ERRATA_458693 1031 bool "ARM errata: Processor deadlock when a false hazard is created" 1032 depends on CPU_V7 1033 help 1034 This option enables the workaround for the 458693 Cortex-A8 (r2p0) 1035 erratum. For very specific sequences of memory operations, it is 1036 possible for a hazard condition intended for a cache line to instead 1037 be incorrectly associated with a different cache line. This false 1038 hazard might then cause a processor deadlock. The workaround enables 1039 the L1 caching of the NEON accesses and disables the PLD instruction 1040 in the ACTLR register. Note that setting specific bits in the ACTLR 1041 register may not be available in non-secure mode. 1042 1043config ARM_ERRATA_460075 1044 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data" 1045 depends on CPU_V7 1046 help 1047 This option enables the workaround for the 460075 Cortex-A8 (r2p0) 1048 erratum. Any asynchronous access to the L2 cache may encounter a 1049 situation in which recent store transactions to the L2 cache are lost 1050 and overwritten with stale memory contents from external memory. The 1051 workaround disables the write-allocate mode for the L2 cache via the 1052 ACTLR register. Note that setting specific bits in the ACTLR register 1053 may not be available in non-secure mode. 1054 1055config PL310_ERRATA_588369 1056 bool "Clean & Invalidate maintenance operations do not invalidate clean lines" 1057 depends on CACHE_L2X0 && ARCH_OMAP4 1058 help 1059 The PL310 L2 cache controller implements three types of Clean & 1060 Invalidate maintenance operations: by Physical Address 1061 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC). 1062 They are architecturally defined to behave as the execution of a 1063 clean operation followed immediately by an invalidate operation, 1064 both performing to the same memory location. This functionality 1065 is not correctly implemented in PL310 as clean lines are not 1066 invalidated as a result of these operations. Note that this errata 1067 uses Texas Instrument's secure monitor api. 1068 1069config ARM_ERRATA_720789 1070 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID" 1071 depends on CPU_V7 && SMP 1072 help 1073 This option enables the workaround for the 720789 Cortex-A9 (prior to 1074 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the 1075 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS. 1076 As a consequence of this erratum, some TLB entries which should be 1077 invalidated are not, resulting in an incoherency in the system page 1078 tables. The workaround changes the TLB flushing routines to invalidate 1079 entries regardless of the ASID. 1080endmenu 1081 1082source "arch/arm/common/Kconfig" 1083 1084menu "Bus support" 1085 1086config ARM_AMBA 1087 bool 1088 1089config ISA 1090 bool 1091 help 1092 Find out whether you have ISA slots on your motherboard. ISA is the 1093 name of a bus system, i.e. the way the CPU talks to the other stuff 1094 inside your box. Other bus systems are PCI, EISA, MicroChannel 1095 (MCA) or VESA. ISA is an older system, now being displaced by PCI; 1096 newer boards don't support it. If you have ISA, say Y, otherwise N. 1097 1098# Select ISA DMA controller support 1099config ISA_DMA 1100 bool 1101 select ISA_DMA_API 1102 1103# Select ISA DMA interface 1104config ISA_DMA_API 1105 bool 1106 1107config PCI 1108 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX 1109 help 1110 Find out whether you have a PCI motherboard. PCI is the name of a 1111 bus system, i.e. the way the CPU talks to the other stuff inside 1112 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 1113 VESA. If you have PCI, say Y, otherwise N. 1114 1115config PCI_DOMAINS 1116 bool 1117 depends on PCI 1118 1119config PCI_SYSCALL 1120 def_bool PCI 1121 1122# Select the host bridge type 1123config PCI_HOST_VIA82C505 1124 bool 1125 depends on PCI && ARCH_SHARK 1126 default y 1127 1128config PCI_HOST_ITE8152 1129 bool 1130 depends on PCI && MACH_ARMCORE 1131 default y 1132 select DMABOUNCE 1133 1134source "drivers/pci/Kconfig" 1135 1136source "drivers/pcmcia/Kconfig" 1137 1138endmenu 1139 1140menu "Kernel Features" 1141 1142source "kernel/time/Kconfig" 1143 1144config SMP 1145 bool "Symmetric Multi-Processing (EXPERIMENTAL)" 1146 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\ 1147 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\ 1148 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4) 1149 depends on GENERIC_CLOCKEVENTS 1150 select USE_GENERIC_SMP_HELPERS 1151 select HAVE_ARM_SCU if ARCH_REALVIEW || ARCH_OMAP4 || ARCH_S5PV310 ||\ 1152 ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 1153 help 1154 This enables support for systems with more than one CPU. If you have 1155 a system with only one CPU, like most personal computers, say N. If 1156 you have a system with more than one CPU, say Y. 1157 1158 If you say N here, the kernel will run on single and multiprocessor 1159 machines, but will use only one CPU of a multiprocessor machine. If 1160 you say Y here, the kernel will run on many, but not all, single 1161 processor machines. On a single processor machine, the kernel will 1162 run faster if you say N here. 1163 1164 See also <file:Documentation/i386/IO-APIC.txt>, 1165 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at 1166 <http://www.linuxdoc.org/docs.html#howto>. 1167 1168 If you don't know what to do here, say N. 1169 1170config HAVE_ARM_SCU 1171 bool 1172 depends on SMP 1173 help 1174 This option enables support for the ARM system coherency unit 1175 1176config HAVE_ARM_TWD 1177 bool 1178 depends on SMP 1179 help 1180 This options enables support for the ARM timer and watchdog unit 1181 1182choice 1183 prompt "Memory split" 1184 default VMSPLIT_3G 1185 help 1186 Select the desired split between kernel and user memory. 1187 1188 If you are not absolutely sure what you are doing, leave this 1189 option alone! 1190 1191 config VMSPLIT_3G 1192 bool "3G/1G user/kernel split" 1193 config VMSPLIT_2G 1194 bool "2G/2G user/kernel split" 1195 config VMSPLIT_1G 1196 bool "1G/3G user/kernel split" 1197endchoice 1198 1199config PAGE_OFFSET 1200 hex 1201 default 0x40000000 if VMSPLIT_1G 1202 default 0x80000000 if VMSPLIT_2G 1203 default 0xC0000000 1204 1205config NR_CPUS 1206 int "Maximum number of CPUs (2-32)" 1207 range 2 32 1208 depends on SMP 1209 default "4" 1210 1211config HOTPLUG_CPU 1212 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 1213 depends on SMP && HOTPLUG && EXPERIMENTAL 1214 help 1215 Say Y here to experiment with turning CPUs off and on. CPUs 1216 can be controlled through /sys/devices/system/cpu. 1217 1218config LOCAL_TIMERS 1219 bool "Use local timer interrupts" 1220 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \ 1221 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \ 1222 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4) 1223 default y 1224 select HAVE_ARM_TWD if ARCH_REALVIEW || ARCH_OMAP4 || ARCH_S5PV310 || \ 1225 ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS 1226 help 1227 Enable support for local timers on SMP platforms, rather then the 1228 legacy IPI broadcast method. Local timers allows the system 1229 accounting to be spread across the timer interval, preventing a 1230 "thundering herd" at every timer tick. 1231 1232source kernel/Kconfig.preempt 1233 1234config HZ 1235 int 1236 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || \ 1237 ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310 1238 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER 1239 default AT91_TIMER_HZ if ARCH_AT91 1240 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE 1241 default 100 1242 1243config THUMB2_KERNEL 1244 bool "Compile the kernel in Thumb-2 mode" 1245 depends on CPU_V7 && EXPERIMENTAL 1246 select AEABI 1247 select ARM_ASM_UNIFIED 1248 help 1249 By enabling this option, the kernel will be compiled in 1250 Thumb-2 mode. A compiler/assembler that understand the unified 1251 ARM-Thumb syntax is needed. 1252 1253 If unsure, say N. 1254 1255config ARM_ASM_UNIFIED 1256 bool 1257 1258config 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 1265 Since there are major incompatibilities between the legacy ABI and 1266 EABI, especially with regard to structure member alignment, this 1267 option also changes the kernel syscall calling convention to 1268 disambiguate both ABIs and allow for backward compatibility support 1269 (selected with CONFIG_OABI_COMPAT). 1270 1271 To use this you need GCC version 4.0.0 or later. 1272 1273config OABI_COMPAT 1274 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" 1275 depends on AEABI && EXPERIMENTAL 1276 default y 1277 help 1278 This option preserves the old syscall interface along with the 1279 new (ARM EABI) one. It also provides a compatibility layer to 1280 intercept syscalls that have structure arguments which layout 1281 in memory differs between the legacy ABI and the new ARM EABI 1282 (only for non "thumb" binaries). This option adds a tiny 1283 overhead to all syscalls and produces a slightly larger kernel. 1284 If you know you'll be using only pure EABI user space then you 1285 can say N here. If this option is not selected and you attempt 1286 to execute a legacy ABI binary then the result will be 1287 UNPREDICTABLE (in fact it can be predicted that it won't work 1288 at all). If in doubt say Y. 1289 1290config ARCH_HAS_HOLES_MEMORYMODEL 1291 bool 1292 1293config ARCH_SPARSEMEM_ENABLE 1294 bool 1295 1296config ARCH_SPARSEMEM_DEFAULT 1297 def_bool ARCH_SPARSEMEM_ENABLE 1298 1299config ARCH_SELECT_MEMORY_MODEL 1300 def_bool ARCH_SPARSEMEM_ENABLE 1301 1302config HIGHMEM 1303 bool "High Memory Support (EXPERIMENTAL)" 1304 depends on MMU && EXPERIMENTAL 1305 help 1306 The address space of ARM processors is only 4 Gigabytes large 1307 and it has to accommodate user address space, kernel address 1308 space as well as some memory mapped IO. That means that, if you 1309 have a large amount of physical memory and/or IO, not all of the 1310 memory can be "permanently mapped" by the kernel. The physical 1311 memory that is not permanently mapped is called "high memory". 1312 1313 Depending on the selected kernel/user memory split, minimum 1314 vmalloc space and actual amount of RAM, you may not need this 1315 option which should result in a slightly faster kernel. 1316 1317 If unsure, say n. 1318 1319config HIGHPTE 1320 bool "Allocate 2nd-level pagetables from highmem" 1321 depends on HIGHMEM 1322 depends on !OUTER_CACHE 1323 1324config HW_PERF_EVENTS 1325 bool "Enable hardware performance counter support for perf events" 1326 depends on PERF_EVENTS && CPU_HAS_PMU 1327 default y 1328 help 1329 Enable hardware performance counter support for perf events. If 1330 disabled, perf events will use software events only. 1331 1332config SPARSE_IRQ 1333 def_bool n 1334 help 1335 This enables support for sparse irqs. This is useful in general 1336 as most CPUs have a fairly sparse array of IRQ vectors, which 1337 the irq_desc then maps directly on to. Systems with a high 1338 number of off-chip IRQs will want to treat this as 1339 experimental until they have been independently verified. 1340 1341source "mm/Kconfig" 1342 1343config FORCE_MAX_ZONEORDER 1344 int "Maximum zone order" if ARCH_SHMOBILE 1345 range 11 64 if ARCH_SHMOBILE 1346 default "9" if SA1111 1347 default "11" 1348 help 1349 The kernel memory allocator divides physically contiguous memory 1350 blocks into "zones", where each zone is a power of two number of 1351 pages. This option selects the largest power of two that the kernel 1352 keeps in the memory allocator. If you need to allocate very large 1353 blocks of physically contiguous memory, then you may need to 1354 increase this value. 1355 1356 This config option is actually maximum order plus one. For example, 1357 a value of 11 means that the largest free memory block is 2^10 pages. 1358 1359config LEDS 1360 bool "Timer and CPU usage LEDs" 1361 depends on ARCH_CDB89712 || ARCH_EBSA110 || \ 1362 ARCH_EBSA285 || ARCH_INTEGRATOR || \ 1363 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ 1364 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ 1365 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ 1366 ARCH_AT91 || ARCH_DAVINCI || \ 1367 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW 1368 help 1369 If you say Y here, the LEDs on your machine will be used 1370 to provide useful information about your current system status. 1371 1372 If you are compiling a kernel for a NetWinder or EBSA-285, you will 1373 be able to select which LEDs are active using the options below. If 1374 you are compiling a kernel for the EBSA-110 or the LART however, the 1375 red LED will simply flash regularly to indicate that the system is 1376 still functional. It is safe to say Y here if you have a CATS 1377 system, but the driver will do nothing. 1378 1379config LEDS_TIMER 1380 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ 1381 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1382 || MACH_OMAP_PERSEUS2 1383 depends on LEDS 1384 depends on !GENERIC_CLOCKEVENTS 1385 default y if ARCH_EBSA110 1386 help 1387 If you say Y here, one of the system LEDs (the green one on the 1388 NetWinder, the amber one on the EBSA285, or the red one on the LART) 1389 will flash regularly to indicate that the system is still 1390 operational. This is mainly useful to kernel hackers who are 1391 debugging unstable kernels. 1392 1393 The LART uses the same LED for both Timer LED and CPU usage LED 1394 functions. You may choose to use both, but the Timer LED function 1395 will overrule the CPU usage LED. 1396 1397config LEDS_CPU 1398 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ 1399 !ARCH_OMAP) \ 1400 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1401 || MACH_OMAP_PERSEUS2 1402 depends on LEDS 1403 help 1404 If you say Y here, the red LED will be used to give a good real 1405 time indication of CPU usage, by lighting whenever the idle task 1406 is not currently executing. 1407 1408 The LART uses the same LED for both Timer LED and CPU usage LED 1409 functions. You may choose to use both, but the Timer LED function 1410 will overrule the CPU usage LED. 1411 1412config ALIGNMENT_TRAP 1413 bool 1414 depends on CPU_CP15_MMU 1415 default y if !ARCH_EBSA110 1416 select HAVE_PROC_CPU if PROC_FS 1417 help 1418 ARM processors cannot fetch/store information which is not 1419 naturally aligned on the bus, i.e., a 4 byte fetch must start at an 1420 address divisible by 4. On 32-bit ARM processors, these non-aligned 1421 fetch/store instructions will be emulated in software if you say 1422 here, which has a severe performance impact. This is necessary for 1423 correct operation of some network protocols. With an IP-only 1424 configuration it is safe to say N, otherwise say Y. 1425 1426config UACCESS_WITH_MEMCPY 1427 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)" 1428 depends on MMU && EXPERIMENTAL 1429 default y if CPU_FEROCEON 1430 help 1431 Implement faster copy_to_user and clear_user methods for CPU 1432 cores where a 8-word STM instruction give significantly higher 1433 memory write throughput than a sequence of individual 32bit stores. 1434 1435 A possible side effect is a slight increase in scheduling latency 1436 between threads sharing the same address space if they invoke 1437 such copy operations with large buffers. 1438 1439 However, if the CPU data cache is using a write-allocate mode, 1440 this option is unlikely to provide any performance gain. 1441 1442config CC_STACKPROTECTOR 1443 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)" 1444 help 1445 This option turns on the -fstack-protector GCC feature. This 1446 feature puts, at the beginning of functions, a canary value on 1447 the stack just before the return address, and validates 1448 the value just before actually returning. Stack based buffer 1449 overflows (that need to overwrite this return address) now also 1450 overwrite the canary, which gets detected and the attack is then 1451 neutralized via a kernel panic. 1452 This feature requires gcc version 4.2 or above. 1453 1454config DEPRECATED_PARAM_STRUCT 1455 bool "Provide old way to pass kernel parameters" 1456 help 1457 This was deprecated in 2001 and announced to live on for 5 years. 1458 Some old boot loaders still use this way. 1459 1460endmenu 1461 1462menu "Boot options" 1463 1464# Compressed boot loader in ROM. Yes, we really want to ask about 1465# TEXT and BSS so we preserve their values in the config files. 1466config ZBOOT_ROM_TEXT 1467 hex "Compressed ROM boot loader base address" 1468 default "0" 1469 help 1470 The physical address at which the ROM-able zImage is to be 1471 placed in the target. Platforms which normally make use of 1472 ROM-able zImage formats normally set this to a suitable 1473 value in their defconfig file. 1474 1475 If ZBOOT_ROM is not enabled, this has no effect. 1476 1477config ZBOOT_ROM_BSS 1478 hex "Compressed ROM boot loader BSS address" 1479 default "0" 1480 help 1481 The base address of an area of read/write memory in the target 1482 for the ROM-able zImage which must be available while the 1483 decompressor is running. It must be large enough to hold the 1484 entire decompressed kernel plus an additional 128 KiB. 1485 Platforms which normally make use of ROM-able zImage formats 1486 normally set this to a suitable value in their defconfig file. 1487 1488 If ZBOOT_ROM is not enabled, this has no effect. 1489 1490config ZBOOT_ROM 1491 bool "Compressed boot loader in ROM/flash" 1492 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS 1493 help 1494 Say Y here if you intend to execute your compressed kernel image 1495 (zImage) directly from ROM or flash. If unsure, say N. 1496 1497config CMDLINE 1498 string "Default kernel command string" 1499 default "" 1500 help 1501 On some architectures (EBSA110 and CATS), there is currently no way 1502 for the boot loader to pass arguments to the kernel. For these 1503 architectures, you should supply some command-line options at build 1504 time by entering them here. As a minimum, you should specify the 1505 memory size and the root device (e.g., mem=64M root=/dev/nfs). 1506 1507config CMDLINE_FORCE 1508 bool "Always use the default kernel command string" 1509 depends on CMDLINE != "" 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 1516 If unsure, say N. 1517 1518config XIP_KERNEL 1519 bool "Kernel Execute-In-Place from ROM" 1520 depends on !ZBOOT_ROM 1521 help 1522 Execute-In-Place allows the kernel to run from non-volatile storage 1523 directly addressable by the CPU, such as NOR flash. This saves RAM 1524 space since the text section of the kernel is not loaded from flash 1525 to RAM. Read-write sections, such as the data section and stack, 1526 are still copied to RAM. The XIP kernel is not compressed since 1527 it has to run directly from flash, so it will take more space to 1528 store it. The flash address used to link the kernel object files, 1529 and for storing it, is configuration dependent. Therefore, if you 1530 say Y here, you must know the proper physical address where to 1531 store the kernel image depending on your own flash memory usage. 1532 1533 Also note that the make target becomes "make xipImage" rather than 1534 "make zImage" or "make Image". The final kernel binary to put in 1535 ROM memory will be arch/arm/boot/xipImage. 1536 1537 If unsure, say N. 1538 1539config XIP_PHYS_ADDR 1540 hex "XIP Kernel Physical Location" 1541 depends on XIP_KERNEL 1542 default "0x00080000" 1543 help 1544 This is the physical address in your flash memory the kernel will 1545 be linked for and stored to. This address is dependent on your 1546 own flash usage. 1547 1548config KEXEC 1549 bool "Kexec system call (EXPERIMENTAL)" 1550 depends on EXPERIMENTAL 1551 help 1552 kexec is a system call that implements the ability to shutdown your 1553 current kernel, and to start another kernel. It is like a reboot 1554 but it is independent of the system firmware. And like a reboot 1555 you can start any kernel with it, not just Linux. 1556 1557 It is an ongoing process to be certain the hardware in a machine 1558 is properly shutdown, so do not be surprised if this code does not 1559 initially work for you. It may help to enable device hotplugging 1560 support. 1561 1562config ATAGS_PROC 1563 bool "Export atags in procfs" 1564 depends on KEXEC 1565 default y 1566 help 1567 Should the atags used to boot the kernel be exported in an "atags" 1568 file in procfs. Useful with kexec. 1569 1570config AUTO_ZRELADDR 1571 bool "Auto calculation of the decompressed kernel image address" 1572 depends on !ZBOOT_ROM && !ARCH_U300 1573 help 1574 ZRELADDR is the physical address where the decompressed kernel 1575 image will be placed. If AUTO_ZRELADDR is selected, the address 1576 will be determined at run-time by masking the current IP with 1577 0xf8000000. This assumes the zImage being placed in the first 128MB 1578 from start of memory. 1579 1580config ZRELADDR 1581 hex "Physical address of the decompressed kernel image" 1582 depends on !AUTO_ZRELADDR 1583 default 0x00008000 if ARCH_BCMRING ||\ 1584 ARCH_CNS3XXX ||\ 1585 ARCH_DOVE ||\ 1586 ARCH_EBSA110 ||\ 1587 ARCH_FOOTBRIDGE ||\ 1588 ARCH_INTEGRATOR ||\ 1589 ARCH_IOP13XX ||\ 1590 ARCH_IOP33X ||\ 1591 ARCH_IXP2000 ||\ 1592 ARCH_IXP23XX ||\ 1593 ARCH_IXP4XX ||\ 1594 ARCH_KIRKWOOD ||\ 1595 ARCH_KS8695 ||\ 1596 ARCH_LOKI ||\ 1597 ARCH_MMP ||\ 1598 ARCH_MV78XX0 ||\ 1599 ARCH_NOMADIK ||\ 1600 ARCH_NUC93X ||\ 1601 ARCH_NS9XXX ||\ 1602 ARCH_ORION5X ||\ 1603 ARCH_SPEAR3XX ||\ 1604 ARCH_SPEAR6XX ||\ 1605 ARCH_TEGRA ||\ 1606 ARCH_U8500 ||\ 1607 ARCH_VERSATILE ||\ 1608 ARCH_W90X900 1609 default 0x08008000 if ARCH_MX1 ||\ 1610 ARCH_SHARK 1611 default 0x10008000 if ARCH_MSM ||\ 1612 ARCH_OMAP1 ||\ 1613 ARCH_RPC 1614 default 0x20008000 if ARCH_S5P6440 ||\ 1615 ARCH_S5P6442 ||\ 1616 ARCH_S5PC100 ||\ 1617 ARCH_S5PV210 1618 default 0x30008000 if ARCH_S3C2410 ||\ 1619 ARCH_S3C2400 ||\ 1620 ARCH_S3C2412 ||\ 1621 ARCH_S3C2416 ||\ 1622 ARCH_S3C2440 ||\ 1623 ARCH_S3C2443 1624 default 0x40008000 if ARCH_STMP378X ||\ 1625 ARCH_STMP37XX ||\ 1626 ARCH_SH7372 ||\ 1627 ARCH_SH7377 ||\ 1628 ARCH_S5PV310 1629 default 0x50008000 if ARCH_S3C64XX ||\ 1630 ARCH_SH7367 1631 default 0x60008000 if ARCH_VEXPRESS 1632 default 0x80008000 if ARCH_MX25 ||\ 1633 ARCH_MX3 ||\ 1634 ARCH_NETX ||\ 1635 ARCH_OMAP2PLUS ||\ 1636 ARCH_PNX4008 1637 default 0x90008000 if ARCH_MX5 ||\ 1638 ARCH_MX91231 1639 default 0xa0008000 if ARCH_IOP32X ||\ 1640 ARCH_PXA ||\ 1641 MACH_MX27 1642 default 0xc0008000 if ARCH_LH7A40X ||\ 1643 MACH_MX21 1644 default 0xf0008000 if ARCH_AAEC2000 ||\ 1645 ARCH_L7200 1646 default 0xc0028000 if ARCH_CLPS711X 1647 default 0x70008000 if ARCH_AT91 && (ARCH_AT91CAP9 || ARCH_AT91SAM9G45) 1648 default 0x20008000 if ARCH_AT91 && !(ARCH_AT91CAP9 || ARCH_AT91SAM9G45) 1649 default 0xc0008000 if ARCH_DAVINCI && ARCH_DAVINCI_DA8XX 1650 default 0x80008000 if ARCH_DAVINCI && !ARCH_DAVINCI_DA8XX 1651 default 0x00008000 if ARCH_EP93XX && EP93XX_SDCE3_SYNC_PHYS_OFFSET 1652 default 0xc0008000 if ARCH_EP93XX && EP93XX_SDCE0_PHYS_OFFSET 1653 default 0xd0008000 if ARCH_EP93XX && EP93XX_SDCE1_PHYS_OFFSET 1654 default 0xe0008000 if ARCH_EP93XX && EP93XX_SDCE2_PHYS_OFFSET 1655 default 0xf0008000 if ARCH_EP93XX && EP93XX_SDCE3_ASYNC_PHYS_OFFSET 1656 default 0x00008000 if ARCH_GEMINI && GEMINI_MEM_SWAP 1657 default 0x10008000 if ARCH_GEMINI && !GEMINI_MEM_SWAP 1658 default 0x70008000 if ARCH_REALVIEW && REALVIEW_HIGH_PHYS_OFFSET 1659 default 0x00008000 if ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET 1660 default 0xc0208000 if ARCH_SA1100 && SA1111 1661 default 0xc0008000 if ARCH_SA1100 && !SA1111 1662 default 0x30108000 if ARCH_S3C2410 && PM_H1940 1663 default 0x28E08000 if ARCH_U300 && MACH_U300_SINGLE_RAM 1664 default 0x48008000 if ARCH_U300 && !MACH_U300_SINGLE_RAM 1665 help 1666 ZRELADDR is the physical address where the decompressed kernel 1667 image will be placed. ZRELADDR has to be specified when the 1668 assumption of AUTO_ZRELADDR is not valid, or when ZBOOT_ROM is 1669 selected. 1670 1671endmenu 1672 1673menu "CPU Power Management" 1674 1675if ARCH_HAS_CPUFREQ 1676 1677source "drivers/cpufreq/Kconfig" 1678 1679config CPU_FREQ_SA1100 1680 bool 1681 1682config CPU_FREQ_SA1110 1683 bool 1684 1685config CPU_FREQ_INTEGRATOR 1686 tristate "CPUfreq driver for ARM Integrator CPUs" 1687 depends on ARCH_INTEGRATOR && CPU_FREQ 1688 default y 1689 help 1690 This enables the CPUfreq driver for ARM Integrator CPUs. 1691 1692 For details, take a look at <file:Documentation/cpu-freq>. 1693 1694 If in doubt, say Y. 1695 1696config CPU_FREQ_PXA 1697 bool 1698 depends on CPU_FREQ && ARCH_PXA && PXA25x 1699 default y 1700 select CPU_FREQ_DEFAULT_GOV_USERSPACE 1701 1702config CPU_FREQ_S3C64XX 1703 bool "CPUfreq support for Samsung S3C64XX CPUs" 1704 depends on CPU_FREQ && CPU_S3C6410 1705 1706config CPU_FREQ_S3C 1707 bool 1708 help 1709 Internal configuration node for common cpufreq on Samsung SoC 1710 1711config CPU_FREQ_S3C24XX 1712 bool "CPUfreq driver for Samsung S3C24XX series CPUs" 1713 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL 1714 select CPU_FREQ_S3C 1715 help 1716 This enables the CPUfreq driver for the Samsung S3C24XX family 1717 of CPUs. 1718 1719 For details, take a look at <file:Documentation/cpu-freq>. 1720 1721 If in doubt, say N. 1722 1723config CPU_FREQ_S3C24XX_PLL 1724 bool "Support CPUfreq changing of PLL frequency" 1725 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL 1726 help 1727 Compile in support for changing the PLL frequency from the 1728 S3C24XX series CPUfreq driver. The PLL takes time to settle 1729 after a frequency change, so by default it is not enabled. 1730 1731 This also means that the PLL tables for the selected CPU(s) will 1732 be built which may increase the size of the kernel image. 1733 1734config CPU_FREQ_S3C24XX_DEBUG 1735 bool "Debug CPUfreq Samsung driver core" 1736 depends on CPU_FREQ_S3C24XX 1737 help 1738 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core 1739 1740config CPU_FREQ_S3C24XX_IODEBUG 1741 bool "Debug CPUfreq Samsung driver IO timing" 1742 depends on CPU_FREQ_S3C24XX 1743 help 1744 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core 1745 1746config CPU_FREQ_S3C24XX_DEBUGFS 1747 bool "Export debugfs for CPUFreq" 1748 depends on CPU_FREQ_S3C24XX && DEBUG_FS 1749 help 1750 Export status information via debugfs. 1751 1752endif 1753 1754source "drivers/cpuidle/Kconfig" 1755 1756endmenu 1757 1758menu "Floating point emulation" 1759 1760comment "At least one emulation must be selected" 1761 1762config FPE_NWFPE 1763 bool "NWFPE math emulation" 1764 depends on !AEABI || OABI_COMPAT 1765 ---help--- 1766 Say Y to include the NWFPE floating point emulator in the kernel. 1767 This is necessary to run most binaries. Linux does not currently 1768 support floating point hardware so you need to say Y here even if 1769 your machine has an FPA or floating point co-processor podule. 1770 1771 You may say N here if you are going to load the Acorn FPEmulator 1772 early in the bootup. 1773 1774config FPE_NWFPE_XP 1775 bool "Support extended precision" 1776 depends on FPE_NWFPE 1777 help 1778 Say Y to include 80-bit support in the kernel floating-point 1779 emulator. Otherwise, only 32 and 64-bit support is compiled in. 1780 Note that gcc does not generate 80-bit operations by default, 1781 so in most cases this option only enlarges the size of the 1782 floating point emulator without any good reason. 1783 1784 You almost surely want to say N here. 1785 1786config FPE_FASTFPE 1787 bool "FastFPE math emulation (EXPERIMENTAL)" 1788 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL 1789 ---help--- 1790 Say Y here to include the FAST floating point emulator in the kernel. 1791 This is an experimental much faster emulator which now also has full 1792 precision for the mantissa. It does not support any exceptions. 1793 It is very simple, and approximately 3-6 times faster than NWFPE. 1794 1795 It should be sufficient for most programs. It may be not suitable 1796 for scientific calculations, but you have to check this for yourself. 1797 If you do not feel you need a faster FP emulation you should better 1798 choose NWFPE. 1799 1800config VFP 1801 bool "VFP-format floating point maths" 1802 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON 1803 help 1804 Say Y to include VFP support code in the kernel. This is needed 1805 if your hardware includes a VFP unit. 1806 1807 Please see <file:Documentation/arm/VFP/release-notes.txt> for 1808 release notes and additional status information. 1809 1810 Say N if your target does not have VFP hardware. 1811 1812config VFPv3 1813 bool 1814 depends on VFP 1815 default y if CPU_V7 1816 1817config NEON 1818 bool "Advanced SIMD (NEON) Extension support" 1819 depends on VFPv3 && CPU_V7 1820 help 1821 Say Y to include support code for NEON, the ARMv7 Advanced SIMD 1822 Extension. 1823 1824endmenu 1825 1826menu "Userspace binary formats" 1827 1828source "fs/Kconfig.binfmt" 1829 1830config ARTHUR 1831 tristate "RISC OS personality" 1832 depends on !AEABI 1833 help 1834 Say Y here to include the kernel code necessary if you want to run 1835 Acorn RISC OS/Arthur binaries under Linux. This code is still very 1836 experimental; if this sounds frightening, say N and sleep in peace. 1837 You can also say M here to compile this support as a module (which 1838 will be called arthur). 1839 1840endmenu 1841 1842menu "Power management options" 1843 1844source "kernel/power/Kconfig" 1845 1846config ARCH_SUSPEND_POSSIBLE 1847 def_bool y 1848 1849endmenu 1850 1851source "net/Kconfig" 1852 1853source "drivers/Kconfig" 1854 1855source "fs/Kconfig" 1856 1857source "arch/arm/Kconfig.debug" 1858 1859source "security/Kconfig" 1860 1861source "crypto/Kconfig" 1862 1863source "lib/Kconfig" 1864