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 RTC_LIB 14 select SYS_SUPPORTS_APM_EMULATION 15 select GENERIC_ATOMIC64 if (!CPU_32v6K) 16 select HAVE_OPROFILE 17 select HAVE_ARCH_KGDB 18 select HAVE_KPROBES if (!XIP_KERNEL) 19 select HAVE_KRETPROBES if (HAVE_KPROBES) 20 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL) 21 select HAVE_GENERIC_DMA_COHERENT 22 select HAVE_KERNEL_GZIP 23 select HAVE_KERNEL_LZO 24 select HAVE_PERF_EVENTS 25 select PERF_USE_VMALLOC 26 help 27 The ARM series is a line of low-power-consumption RISC chip designs 28 licensed by ARM Ltd and targeted at embedded applications and 29 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer 30 manufactured, but legacy ARM-based PC hardware remains popular in 31 Europe. There is an ARM Linux project with a web page at 32 <http://www.arm.linux.org.uk/>. 33 34config HAVE_PWM 35 bool 36 37config SYS_SUPPORTS_APM_EMULATION 38 bool 39 40config GENERIC_GPIO 41 bool 42 43config GENERIC_TIME 44 bool 45 46config GENERIC_CLOCKEVENTS 47 bool 48 49config GENERIC_CLOCKEVENTS_BROADCAST 50 bool 51 depends on GENERIC_CLOCKEVENTS 52 default y if SMP && !LOCAL_TIMERS 53 54config HAVE_TCM 55 bool 56 select GENERIC_ALLOCATOR 57 58config HAVE_PROC_CPU 59 bool 60 61config NO_IOPORT 62 bool 63 64config EISA 65 bool 66 ---help--- 67 The Extended Industry Standard Architecture (EISA) bus was 68 developed as an open alternative to the IBM MicroChannel bus. 69 70 The EISA bus provided some of the features of the IBM MicroChannel 71 bus while maintaining backward compatibility with cards made for 72 the older ISA bus. The EISA bus saw limited use between 1988 and 73 1995 when it was made obsolete by the PCI bus. 74 75 Say Y here if you are building a kernel for an EISA-based machine. 76 77 Otherwise, say N. 78 79config SBUS 80 bool 81 82config MCA 83 bool 84 help 85 MicroChannel Architecture is found in some IBM PS/2 machines and 86 laptops. It is a bus system similar to PCI or ISA. See 87 <file:Documentation/mca.txt> (and especially the web page given 88 there) before attempting to build an MCA bus kernel. 89 90config GENERIC_HARDIRQS 91 bool 92 default y 93 94config STACKTRACE_SUPPORT 95 bool 96 default y 97 98config HAVE_LATENCYTOP_SUPPORT 99 bool 100 depends on !SMP 101 default y 102 103config LOCKDEP_SUPPORT 104 bool 105 default y 106 107config TRACE_IRQFLAGS_SUPPORT 108 bool 109 default y 110 111config HARDIRQS_SW_RESEND 112 bool 113 default y 114 115config GENERIC_IRQ_PROBE 116 bool 117 default y 118 119config GENERIC_LOCKBREAK 120 bool 121 default y 122 depends on SMP && PREEMPT 123 124config RWSEM_GENERIC_SPINLOCK 125 bool 126 default y 127 128config RWSEM_XCHGADD_ALGORITHM 129 bool 130 131config ARCH_HAS_ILOG2_U32 132 bool 133 134config ARCH_HAS_ILOG2_U64 135 bool 136 137config ARCH_HAS_CPUFREQ 138 bool 139 help 140 Internal node to signify that the ARCH has CPUFREQ support 141 and that the relevant menu configurations are displayed for 142 it. 143 144config GENERIC_HWEIGHT 145 bool 146 default y 147 148config GENERIC_CALIBRATE_DELAY 149 bool 150 default y 151 152config ARCH_MAY_HAVE_PC_FDC 153 bool 154 155config ZONE_DMA 156 bool 157 158config GENERIC_ISA_DMA 159 bool 160 161config FIQ 162 bool 163 164config ARCH_MTD_XIP 165 bool 166 167config GENERIC_HARDIRQS_NO__DO_IRQ 168 def_bool y 169 170config ARM_L1_CACHE_SHIFT_6 171 bool 172 help 173 Setting ARM L1 cache line size to 64 Bytes. 174 175if OPROFILE 176 177config OPROFILE_ARMV6 178 def_bool y 179 depends on CPU_V6 && !SMP 180 select OPROFILE_ARM11_CORE 181 182config OPROFILE_MPCORE 183 def_bool y 184 depends on CPU_V6 && SMP 185 select OPROFILE_ARM11_CORE 186 187config OPROFILE_ARM11_CORE 188 bool 189 190config OPROFILE_ARMV7 191 def_bool y 192 depends on CPU_V7 && !SMP 193 bool 194 195endif 196 197config VECTORS_BASE 198 hex 199 default 0xffff0000 if MMU || CPU_HIGH_VECTOR 200 default DRAM_BASE if REMAP_VECTORS_TO_RAM 201 default 0x00000000 202 help 203 The base address of exception vectors. 204 205source "init/Kconfig" 206 207source "kernel/Kconfig.freezer" 208 209menu "System Type" 210 211config MMU 212 bool "MMU-based Paged Memory Management Support" 213 default y 214 help 215 Select if you want MMU-based virtualised addressing space 216 support by paged memory management. If unsure, say 'Y'. 217 218choice 219 prompt "ARM system type" 220 default ARCH_VERSATILE 221 222config ARCH_AAEC2000 223 bool "Agilent AAEC-2000 based" 224 select CPU_ARM920T 225 select ARM_AMBA 226 select HAVE_CLK 227 help 228 This enables support for systems based on the Agilent AAEC-2000 229 230config ARCH_INTEGRATOR 231 bool "ARM Ltd. Integrator family" 232 select ARM_AMBA 233 select ARCH_HAS_CPUFREQ 234 select HAVE_CLK 235 select COMMON_CLKDEV 236 select ICST525 237 help 238 Support for ARM's Integrator platform. 239 240config ARCH_REALVIEW 241 bool "ARM Ltd. RealView family" 242 select ARM_AMBA 243 select HAVE_CLK 244 select COMMON_CLKDEV 245 select ICST307 246 select GENERIC_TIME 247 select GENERIC_CLOCKEVENTS 248 select ARCH_WANT_OPTIONAL_GPIOLIB 249 help 250 This enables support for ARM Ltd RealView boards. 251 252config ARCH_VERSATILE 253 bool "ARM Ltd. Versatile family" 254 select ARM_AMBA 255 select ARM_VIC 256 select HAVE_CLK 257 select COMMON_CLKDEV 258 select ICST307 259 select GENERIC_TIME 260 select GENERIC_CLOCKEVENTS 261 select ARCH_WANT_OPTIONAL_GPIOLIB 262 help 263 This enables support for ARM Ltd Versatile board. 264 265config ARCH_AT91 266 bool "Atmel AT91" 267 select GENERIC_GPIO 268 select ARCH_REQUIRE_GPIOLIB 269 select HAVE_CLK 270 help 271 This enables support for systems based on the Atmel AT91RM9200, 272 AT91SAM9 and AT91CAP9 processors. 273 274config ARCH_CLPS711X 275 bool "Cirrus Logic CLPS711x/EP721x-based" 276 select CPU_ARM720T 277 help 278 Support for Cirrus Logic 711x/721x based boards. 279 280config ARCH_GEMINI 281 bool "Cortina Systems Gemini" 282 select CPU_FA526 283 select GENERIC_GPIO 284 select ARCH_REQUIRE_GPIOLIB 285 help 286 Support for the Cortina Systems Gemini family SoCs 287 288config ARCH_EBSA110 289 bool "EBSA-110" 290 select CPU_SA110 291 select ISA 292 select NO_IOPORT 293 help 294 This is an evaluation board for the StrongARM processor available 295 from Digital. It has limited hardware on-board, including an 296 Ethernet interface, two PCMCIA sockets, two serial ports and a 297 parallel port. 298 299config ARCH_EP93XX 300 bool "EP93xx-based" 301 select CPU_ARM920T 302 select ARM_AMBA 303 select ARM_VIC 304 select GENERIC_GPIO 305 select HAVE_CLK 306 select COMMON_CLKDEV 307 select ARCH_REQUIRE_GPIOLIB 308 select ARCH_HAS_HOLES_MEMORYMODEL 309 help 310 This enables support for the Cirrus EP93xx series of CPUs. 311 312config ARCH_FOOTBRIDGE 313 bool "FootBridge" 314 select CPU_SA110 315 select FOOTBRIDGE 316 help 317 Support for systems based on the DC21285 companion chip 318 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. 319 320config ARCH_MXC 321 bool "Freescale MXC/iMX-based" 322 select GENERIC_TIME 323 select GENERIC_CLOCKEVENTS 324 select ARCH_MTD_XIP 325 select GENERIC_GPIO 326 select ARCH_REQUIRE_GPIOLIB 327 select HAVE_CLK 328 help 329 Support for Freescale MXC/iMX-based family of processors 330 331config ARCH_STMP3XXX 332 bool "Freescale STMP3xxx" 333 select CPU_ARM926T 334 select HAVE_CLK 335 select COMMON_CLKDEV 336 select ARCH_REQUIRE_GPIOLIB 337 select GENERIC_TIME 338 select GENERIC_CLOCKEVENTS 339 select GENERIC_GPIO 340 select USB_ARCH_HAS_EHCI 341 help 342 Support for systems based on the Freescale 3xxx CPUs. 343 344config ARCH_NETX 345 bool "Hilscher NetX based" 346 select CPU_ARM926T 347 select ARM_VIC 348 select GENERIC_CLOCKEVENTS 349 select GENERIC_TIME 350 help 351 This enables support for systems based on the Hilscher NetX Soc 352 353config ARCH_H720X 354 bool "Hynix HMS720x-based" 355 select CPU_ARM720T 356 select ISA_DMA_API 357 help 358 This enables support for systems based on the Hynix HMS720x 359 360config ARCH_NOMADIK 361 bool "STMicroelectronics Nomadik" 362 select ARM_AMBA 363 select ARM_VIC 364 select CPU_ARM926T 365 select HAVE_CLK 366 select COMMON_CLKDEV 367 select GENERIC_TIME 368 select GENERIC_CLOCKEVENTS 369 select GENERIC_GPIO 370 select ARCH_REQUIRE_GPIOLIB 371 help 372 Support for the Nomadik platform by ST-Ericsson 373 374config ARCH_IOP13XX 375 bool "IOP13xx-based" 376 depends on MMU 377 select CPU_XSC3 378 select PLAT_IOP 379 select PCI 380 select ARCH_SUPPORTS_MSI 381 select VMSPLIT_1G 382 help 383 Support for Intel's IOP13XX (XScale) family of processors. 384 385config ARCH_IOP32X 386 bool "IOP32x-based" 387 depends on MMU 388 select CPU_XSCALE 389 select PLAT_IOP 390 select PCI 391 select GENERIC_GPIO 392 select ARCH_REQUIRE_GPIOLIB 393 help 394 Support for Intel's 80219 and IOP32X (XScale) family of 395 processors. 396 397config ARCH_IOP33X 398 bool "IOP33x-based" 399 depends on MMU 400 select CPU_XSCALE 401 select PLAT_IOP 402 select PCI 403 select GENERIC_GPIO 404 select ARCH_REQUIRE_GPIOLIB 405 help 406 Support for Intel's IOP33X (XScale) family of processors. 407 408config ARCH_IXP23XX 409 bool "IXP23XX-based" 410 depends on MMU 411 select CPU_XSC3 412 select PCI 413 help 414 Support for Intel's IXP23xx (XScale) family of processors. 415 416config ARCH_IXP2000 417 bool "IXP2400/2800-based" 418 depends on MMU 419 select CPU_XSCALE 420 select PCI 421 help 422 Support for Intel's IXP2400/2800 (XScale) family of processors. 423 424config ARCH_IXP4XX 425 bool "IXP4xx-based" 426 depends on MMU 427 select CPU_XSCALE 428 select GENERIC_GPIO 429 select GENERIC_TIME 430 select GENERIC_CLOCKEVENTS 431 select DMABOUNCE if PCI 432 help 433 Support for Intel's IXP4XX (XScale) family of processors. 434 435config ARCH_L7200 436 bool "LinkUp-L7200" 437 select CPU_ARM720T 438 select FIQ 439 help 440 Say Y here if you intend to run this kernel on a LinkUp Systems 441 L7200 Software Development Board which uses an ARM720T processor. 442 Information on this board can be obtained at: 443 444 <http://www.linkupsys.com/> 445 446 If you have any questions or comments about the Linux kernel port 447 to this board, send e-mail to <sjhill@cotw.com>. 448 449config ARCH_DOVE 450 bool "Marvell Dove" 451 select PCI 452 select GENERIC_GPIO 453 select ARCH_REQUIRE_GPIOLIB 454 select GENERIC_TIME 455 select GENERIC_CLOCKEVENTS 456 select PLAT_ORION 457 help 458 Support for the Marvell Dove SoC 88AP510 459 460config ARCH_KIRKWOOD 461 bool "Marvell Kirkwood" 462 select CPU_FEROCEON 463 select PCI 464 select GENERIC_GPIO 465 select ARCH_REQUIRE_GPIOLIB 466 select GENERIC_TIME 467 select GENERIC_CLOCKEVENTS 468 select PLAT_ORION 469 help 470 Support for the following Marvell Kirkwood series SoCs: 471 88F6180, 88F6192 and 88F6281. 472 473config ARCH_LOKI 474 bool "Marvell Loki (88RC8480)" 475 select CPU_FEROCEON 476 select GENERIC_TIME 477 select GENERIC_CLOCKEVENTS 478 select PLAT_ORION 479 help 480 Support for the Marvell Loki (88RC8480) SoC. 481 482config ARCH_MV78XX0 483 bool "Marvell MV78xx0" 484 select CPU_FEROCEON 485 select PCI 486 select GENERIC_GPIO 487 select ARCH_REQUIRE_GPIOLIB 488 select GENERIC_TIME 489 select GENERIC_CLOCKEVENTS 490 select PLAT_ORION 491 help 492 Support for the following Marvell MV78xx0 series SoCs: 493 MV781x0, MV782x0. 494 495config ARCH_ORION5X 496 bool "Marvell Orion" 497 depends on MMU 498 select CPU_FEROCEON 499 select PCI 500 select GENERIC_GPIO 501 select ARCH_REQUIRE_GPIOLIB 502 select GENERIC_TIME 503 select GENERIC_CLOCKEVENTS 504 select PLAT_ORION 505 help 506 Support for the following Marvell Orion 5x series SoCs: 507 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182), 508 Orion-2 (5281), Orion-1-90 (6183). 509 510config ARCH_MMP 511 bool "Marvell PXA168/910" 512 depends on MMU 513 select GENERIC_GPIO 514 select ARCH_REQUIRE_GPIOLIB 515 select HAVE_CLK 516 select COMMON_CLKDEV 517 select GENERIC_TIME 518 select GENERIC_CLOCKEVENTS 519 select TICK_ONESHOT 520 select PLAT_PXA 521 help 522 Support for Marvell's PXA168/910 processor line. 523 524config ARCH_KS8695 525 bool "Micrel/Kendin KS8695" 526 select CPU_ARM922T 527 select GENERIC_GPIO 528 select ARCH_REQUIRE_GPIOLIB 529 help 530 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based 531 System-on-Chip devices. 532 533config ARCH_NS9XXX 534 bool "NetSilicon NS9xxx" 535 select CPU_ARM926T 536 select GENERIC_GPIO 537 select GENERIC_TIME 538 select GENERIC_CLOCKEVENTS 539 select HAVE_CLK 540 help 541 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx 542 System. 543 544 <http://www.digi.com/products/microprocessors/index.jsp> 545 546config ARCH_W90X900 547 bool "Nuvoton W90X900 CPU" 548 select CPU_ARM926T 549 select ARCH_REQUIRE_GPIOLIB 550 select GENERIC_GPIO 551 select HAVE_CLK 552 select COMMON_CLKDEV 553 select GENERIC_TIME 554 select GENERIC_CLOCKEVENTS 555 help 556 Support for Nuvoton (Winbond logic dept.) ARM9 processor, 557 At present, the w90x900 has been renamed nuc900, regarding 558 the ARM series product line, you can login the following 559 link address to know more. 560 561 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/ 562 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller> 563 564config ARCH_NUC93X 565 bool "Nuvoton NUC93X CPU" 566 select CPU_ARM926T 567 select HAVE_CLK 568 select COMMON_CLKDEV 569 help 570 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a 571 low-power and high performance MPEG-4/JPEG multimedia controller chip. 572 573config ARCH_PNX4008 574 bool "Philips Nexperia PNX4008 Mobile" 575 select CPU_ARM926T 576 select HAVE_CLK 577 select COMMON_CLKDEV 578 help 579 This enables support for Philips PNX4008 mobile platform. 580 581config ARCH_PXA 582 bool "PXA2xx/PXA3xx-based" 583 depends on MMU 584 select ARCH_MTD_XIP 585 select ARCH_HAS_CPUFREQ 586 select GENERIC_GPIO 587 select HAVE_CLK 588 select COMMON_CLKDEV 589 select ARCH_REQUIRE_GPIOLIB 590 select GENERIC_TIME 591 select GENERIC_CLOCKEVENTS 592 select TICK_ONESHOT 593 select PLAT_PXA 594 help 595 Support for Intel/Marvell's PXA2xx/PXA3xx processor line. 596 597config ARCH_MSM 598 bool "Qualcomm MSM" 599 select CPU_V6 600 select GENERIC_TIME 601 select GENERIC_CLOCKEVENTS 602 help 603 Support for Qualcomm MSM7K based systems. This runs on the ARM11 604 apps processor of the MSM7K and depends on a shared memory 605 interface to the ARM9 modem processor which runs the baseband stack 606 and controls some vital subsystems (clock and power control, etc). 607 608config ARCH_RPC 609 bool "RiscPC" 610 select ARCH_ACORN 611 select FIQ 612 select TIMER_ACORN 613 select ARCH_MAY_HAVE_PC_FDC 614 select HAVE_PATA_PLATFORM 615 select ISA_DMA_API 616 select NO_IOPORT 617 select ARCH_SPARSEMEM_ENABLE 618 help 619 On the Acorn Risc-PC, Linux can support the internal IDE disk and 620 CD-ROM interface, serial and parallel port, and the floppy drive. 621 622config ARCH_SA1100 623 bool "SA1100-based" 624 select CPU_SA1100 625 select ISA 626 select ARCH_SPARSEMEM_ENABLE 627 select ARCH_MTD_XIP 628 select ARCH_HAS_CPUFREQ 629 select CPU_FREQ 630 select GENERIC_GPIO 631 select GENERIC_TIME 632 select GENERIC_CLOCKEVENTS 633 select HAVE_CLK 634 select TICK_ONESHOT 635 select ARCH_REQUIRE_GPIOLIB 636 help 637 Support for StrongARM 11x0 based boards. 638 639config ARCH_S3C2410 640 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443" 641 select GENERIC_GPIO 642 select ARCH_HAS_CPUFREQ 643 select HAVE_CLK 644 help 645 Samsung S3C2410X CPU based systems, such as the Simtec Electronics 646 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or 647 the Samsung SMDK2410 development board (and derivatives). 648 649config ARCH_S3C64XX 650 bool "Samsung S3C64XX" 651 select GENERIC_GPIO 652 select HAVE_CLK 653 select ARCH_HAS_CPUFREQ 654 help 655 Samsung S3C64XX series based systems 656 657config ARCH_S5PC1XX 658 bool "Samsung S5PC1XX" 659 select GENERIC_GPIO 660 select HAVE_CLK 661 select CPU_V7 662 select ARM_L1_CACHE_SHIFT_6 663 help 664 Samsung S5PC1XX series based systems 665 666config ARCH_SHARK 667 bool "Shark" 668 select CPU_SA110 669 select ISA 670 select ISA_DMA 671 select ZONE_DMA 672 select PCI 673 help 674 Support for the StrongARM based Digital DNARD machine, also known 675 as "Shark" (<http://www.shark-linux.de/shark.html>). 676 677config ARCH_LH7A40X 678 bool "Sharp LH7A40X" 679 select CPU_ARM922T 680 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM 681 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM 682 help 683 Say Y here for systems based on one of the Sharp LH7A40X 684 System on a Chip processors. These CPUs include an ARM922T 685 core with a wide array of integrated devices for 686 hand-held and low-power applications. 687 688config ARCH_U300 689 bool "ST-Ericsson U300 Series" 690 depends on MMU 691 select CPU_ARM926T 692 select HAVE_TCM 693 select ARM_AMBA 694 select ARM_VIC 695 select GENERIC_TIME 696 select GENERIC_CLOCKEVENTS 697 select HAVE_CLK 698 select COMMON_CLKDEV 699 select GENERIC_GPIO 700 help 701 Support for ST-Ericsson U300 series mobile platforms. 702 703config ARCH_DAVINCI 704 bool "TI DaVinci" 705 select CPU_ARM926T 706 select GENERIC_TIME 707 select GENERIC_CLOCKEVENTS 708 select GENERIC_GPIO 709 select ARCH_REQUIRE_GPIOLIB 710 select HAVE_CLK 711 select ZONE_DMA 712 select HAVE_IDE 713 select COMMON_CLKDEV 714 select GENERIC_ALLOCATOR 715 select ARCH_HAS_HOLES_MEMORYMODEL 716 help 717 Support for TI's DaVinci platform. 718 719config ARCH_OMAP 720 bool "TI OMAP" 721 select GENERIC_GPIO 722 select HAVE_CLK 723 select ARCH_REQUIRE_GPIOLIB 724 select ARCH_HAS_CPUFREQ 725 select GENERIC_TIME 726 select GENERIC_CLOCKEVENTS 727 select ARCH_HAS_HOLES_MEMORYMODEL 728 help 729 Support for TI's OMAP platform (OMAP1 and OMAP2). 730 731config ARCH_BCMRING 732 bool "Broadcom BCMRING" 733 depends on MMU 734 select CPU_V6 735 select ARM_AMBA 736 select COMMON_CLKDEV 737 select GENERIC_TIME 738 select GENERIC_CLOCKEVENTS 739 select ARCH_WANT_OPTIONAL_GPIOLIB 740 help 741 Support for Broadcom's BCMRing platform. 742 743config ARCH_U8500 744 bool "ST-Ericsson U8500 Series" 745 select CPU_V7 746 select ARM_AMBA 747 select GENERIC_TIME 748 select GENERIC_CLOCKEVENTS 749 select COMMON_CLKDEV 750 help 751 Support for ST-Ericsson's Ux500 architecture 752 753endchoice 754 755source "arch/arm/mach-aaec2000/Kconfig" 756 757source "arch/arm/mach-at91/Kconfig" 758 759source "arch/arm/mach-bcmring/Kconfig" 760 761source "arch/arm/mach-clps711x/Kconfig" 762 763source "arch/arm/mach-davinci/Kconfig" 764 765source "arch/arm/mach-dove/Kconfig" 766 767source "arch/arm/mach-ep93xx/Kconfig" 768 769source "arch/arm/mach-footbridge/Kconfig" 770 771source "arch/arm/mach-gemini/Kconfig" 772 773source "arch/arm/mach-h720x/Kconfig" 774 775source "arch/arm/mach-integrator/Kconfig" 776 777source "arch/arm/mach-iop32x/Kconfig" 778 779source "arch/arm/mach-iop33x/Kconfig" 780 781source "arch/arm/mach-iop13xx/Kconfig" 782 783source "arch/arm/mach-ixp4xx/Kconfig" 784 785source "arch/arm/mach-ixp2000/Kconfig" 786 787source "arch/arm/mach-ixp23xx/Kconfig" 788 789source "arch/arm/mach-kirkwood/Kconfig" 790 791source "arch/arm/mach-ks8695/Kconfig" 792 793source "arch/arm/mach-lh7a40x/Kconfig" 794 795source "arch/arm/mach-loki/Kconfig" 796 797source "arch/arm/mach-msm/Kconfig" 798 799source "arch/arm/mach-mv78xx0/Kconfig" 800 801source "arch/arm/plat-mxc/Kconfig" 802 803source "arch/arm/mach-netx/Kconfig" 804 805source "arch/arm/mach-nomadik/Kconfig" 806source "arch/arm/plat-nomadik/Kconfig" 807 808source "arch/arm/mach-ns9xxx/Kconfig" 809 810source "arch/arm/mach-nuc93x/Kconfig" 811 812source "arch/arm/plat-omap/Kconfig" 813 814source "arch/arm/mach-omap1/Kconfig" 815 816source "arch/arm/mach-omap2/Kconfig" 817 818source "arch/arm/mach-orion5x/Kconfig" 819 820source "arch/arm/mach-pxa/Kconfig" 821source "arch/arm/plat-pxa/Kconfig" 822 823source "arch/arm/mach-mmp/Kconfig" 824 825source "arch/arm/mach-realview/Kconfig" 826 827source "arch/arm/mach-sa1100/Kconfig" 828 829source "arch/arm/plat-samsung/Kconfig" 830source "arch/arm/plat-s3c24xx/Kconfig" 831source "arch/arm/plat-s3c64xx/Kconfig" 832source "arch/arm/plat-s3c/Kconfig" 833source "arch/arm/plat-s5pc1xx/Kconfig" 834 835if ARCH_S3C2410 836source "arch/arm/mach-s3c2400/Kconfig" 837source "arch/arm/mach-s3c2410/Kconfig" 838source "arch/arm/mach-s3c2412/Kconfig" 839source "arch/arm/mach-s3c2440/Kconfig" 840source "arch/arm/mach-s3c2442/Kconfig" 841source "arch/arm/mach-s3c2443/Kconfig" 842endif 843 844if ARCH_S3C64XX 845source "arch/arm/mach-s3c6400/Kconfig" 846source "arch/arm/mach-s3c6410/Kconfig" 847endif 848 849source "arch/arm/plat-stmp3xxx/Kconfig" 850 851if ARCH_S5PC1XX 852source "arch/arm/mach-s5pc100/Kconfig" 853endif 854 855source "arch/arm/mach-u300/Kconfig" 856 857source "arch/arm/mach-ux500/Kconfig" 858 859source "arch/arm/mach-versatile/Kconfig" 860 861source "arch/arm/mach-w90x900/Kconfig" 862 863# Definitions to make life easier 864config ARCH_ACORN 865 bool 866 867config PLAT_IOP 868 bool 869 select GENERIC_CLOCKEVENTS 870 select GENERIC_TIME 871 872config PLAT_ORION 873 bool 874 875config PLAT_PXA 876 bool 877 878source arch/arm/mm/Kconfig 879 880config IWMMXT 881 bool "Enable iWMMXt support" 882 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK 883 default y if PXA27x || PXA3xx || ARCH_MMP 884 help 885 Enable support for iWMMXt context switching at run time if 886 running on a CPU that supports it. 887 888# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER 889config XSCALE_PMU 890 bool 891 depends on CPU_XSCALE && !XSCALE_PMU_TIMER 892 default y 893 894config CPU_HAS_PMU 895 depends on CPU_V6 || CPU_V7 || XSCALE_PMU 896 default y 897 bool 898 899if !MMU 900source "arch/arm/Kconfig-nommu" 901endif 902 903config ARM_ERRATA_411920 904 bool "ARM errata: Invalidation of the Instruction Cache operation can fail" 905 depends on CPU_V6 && !SMP 906 help 907 Invalidation of the Instruction Cache operation can 908 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176. 909 It does not affect the MPCore. This option enables the ARM Ltd. 910 recommended workaround. 911 912config ARM_ERRATA_430973 913 bool "ARM errata: Stale prediction on replaced interworking branch" 914 depends on CPU_V7 915 help 916 This option enables the workaround for the 430973 Cortex-A8 917 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb 918 interworking branch is replaced with another code sequence at the 919 same virtual address, whether due to self-modifying code or virtual 920 to physical address re-mapping, Cortex-A8 does not recover from the 921 stale interworking branch prediction. This results in Cortex-A8 922 executing the new code sequence in the incorrect ARM or Thumb state. 923 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE 924 and also flushes the branch target cache at every context switch. 925 Note that setting specific bits in the ACTLR register may not be 926 available in non-secure mode. 927 928config ARM_ERRATA_458693 929 bool "ARM errata: Processor deadlock when a false hazard is created" 930 depends on CPU_V7 931 help 932 This option enables the workaround for the 458693 Cortex-A8 (r2p0) 933 erratum. For very specific sequences of memory operations, it is 934 possible for a hazard condition intended for a cache line to instead 935 be incorrectly associated with a different cache line. This false 936 hazard might then cause a processor deadlock. The workaround enables 937 the L1 caching of the NEON accesses and disables the PLD instruction 938 in the ACTLR register. Note that setting specific bits in the ACTLR 939 register may not be available in non-secure mode. 940 941config ARM_ERRATA_460075 942 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data" 943 depends on CPU_V7 944 help 945 This option enables the workaround for the 460075 Cortex-A8 (r2p0) 946 erratum. Any asynchronous access to the L2 cache may encounter a 947 situation in which recent store transactions to the L2 cache are lost 948 and overwritten with stale memory contents from external memory. The 949 workaround disables the write-allocate mode for the L2 cache via the 950 ACTLR register. Note that setting specific bits in the ACTLR register 951 may not be available in non-secure mode. 952 953config PL310_ERRATA_588369 954 bool "Clean & Invalidate maintenance operations do not invalidate clean lines" 955 depends on CACHE_L2X0 && ARCH_OMAP4 956 help 957 The PL310 L2 cache controller implements three types of Clean & 958 Invalidate maintenance operations: by Physical Address 959 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC). 960 They are architecturally defined to behave as the execution of a 961 clean operation followed immediately by an invalidate operation, 962 both performing to the same memory location. This functionality 963 is not correctly implemented in PL310 as clean lines are not 964 invalidated as a result of these operations. Note that this errata 965 uses Texas Instrument's secure monitor api. 966endmenu 967 968source "arch/arm/common/Kconfig" 969 970config FORCE_MAX_ZONEORDER 971 int 972 depends on SA1111 973 default "9" 974 975menu "Bus support" 976 977config ARM_AMBA 978 bool 979 980config ISA 981 bool 982 help 983 Find out whether you have ISA slots on your motherboard. ISA is the 984 name of a bus system, i.e. the way the CPU talks to the other stuff 985 inside your box. Other bus systems are PCI, EISA, MicroChannel 986 (MCA) or VESA. ISA is an older system, now being displaced by PCI; 987 newer boards don't support it. If you have ISA, say Y, otherwise N. 988 989# Select ISA DMA controller support 990config ISA_DMA 991 bool 992 select ISA_DMA_API 993 994# Select ISA DMA interface 995config ISA_DMA_API 996 bool 997 998config PCI 999 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE 1000 help 1001 Find out whether you have a PCI motherboard. PCI is the name of a 1002 bus system, i.e. the way the CPU talks to the other stuff inside 1003 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 1004 VESA. If you have PCI, say Y, otherwise N. 1005 1006config PCI_SYSCALL 1007 def_bool PCI 1008 1009# Select the host bridge type 1010config PCI_HOST_VIA82C505 1011 bool 1012 depends on PCI && ARCH_SHARK 1013 default y 1014 1015config PCI_HOST_ITE8152 1016 bool 1017 depends on PCI && MACH_ARMCORE 1018 default y 1019 select DMABOUNCE 1020 1021source "drivers/pci/Kconfig" 1022 1023source "drivers/pcmcia/Kconfig" 1024 1025endmenu 1026 1027menu "Kernel Features" 1028 1029source "kernel/time/Kconfig" 1030 1031config SMP 1032 bool "Symmetric Multi-Processing (EXPERIMENTAL)" 1033 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\ 1034 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500) 1035 depends on GENERIC_CLOCKEVENTS 1036 select USE_GENERIC_SMP_HELPERS 1037 select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500) 1038 help 1039 This enables support for systems with more than one CPU. If you have 1040 a system with only one CPU, like most personal computers, say N. If 1041 you have a system with more than one CPU, say Y. 1042 1043 If you say N here, the kernel will run on single and multiprocessor 1044 machines, but will use only one CPU of a multiprocessor machine. If 1045 you say Y here, the kernel will run on many, but not all, single 1046 processor machines. On a single processor machine, the kernel will 1047 run faster if you say N here. 1048 1049 See also <file:Documentation/i386/IO-APIC.txt>, 1050 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at 1051 <http://www.linuxdoc.org/docs.html#howto>. 1052 1053 If you don't know what to do here, say N. 1054 1055config HAVE_ARM_SCU 1056 bool 1057 depends on SMP 1058 help 1059 This option enables support for the ARM system coherency unit 1060 1061config HAVE_ARM_TWD 1062 bool 1063 depends on SMP 1064 help 1065 This options enables support for the ARM timer and watchdog unit 1066 1067choice 1068 prompt "Memory split" 1069 default VMSPLIT_3G 1070 help 1071 Select the desired split between kernel and user memory. 1072 1073 If you are not absolutely sure what you are doing, leave this 1074 option alone! 1075 1076 config VMSPLIT_3G 1077 bool "3G/1G user/kernel split" 1078 config VMSPLIT_2G 1079 bool "2G/2G user/kernel split" 1080 config VMSPLIT_1G 1081 bool "1G/3G user/kernel split" 1082endchoice 1083 1084config PAGE_OFFSET 1085 hex 1086 default 0x40000000 if VMSPLIT_1G 1087 default 0x80000000 if VMSPLIT_2G 1088 default 0xC0000000 1089 1090config NR_CPUS 1091 int "Maximum number of CPUs (2-32)" 1092 range 2 32 1093 depends on SMP 1094 default "4" 1095 1096config HOTPLUG_CPU 1097 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 1098 depends on SMP && HOTPLUG && EXPERIMENTAL 1099 help 1100 Say Y here to experiment with turning CPUs off and on. CPUs 1101 can be controlled through /sys/devices/system/cpu. 1102 1103config LOCAL_TIMERS 1104 bool "Use local timer interrupts" 1105 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \ 1106 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500) 1107 default y 1108 select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500) 1109 help 1110 Enable support for local timers on SMP platforms, rather then the 1111 legacy IPI broadcast method. Local timers allows the system 1112 accounting to be spread across the timer interval, preventing a 1113 "thundering herd" at every timer tick. 1114 1115source kernel/Kconfig.preempt 1116 1117config HZ 1118 int 1119 default 128 if ARCH_L7200 1120 default 200 if ARCH_EBSA110 || ARCH_S3C2410 1121 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER 1122 default AT91_TIMER_HZ if ARCH_AT91 1123 default 100 1124 1125config THUMB2_KERNEL 1126 bool "Compile the kernel in Thumb-2 mode" 1127 depends on CPU_V7 && EXPERIMENTAL 1128 select AEABI 1129 select ARM_ASM_UNIFIED 1130 help 1131 By enabling this option, the kernel will be compiled in 1132 Thumb-2 mode. A compiler/assembler that understand the unified 1133 ARM-Thumb syntax is needed. 1134 1135 If unsure, say N. 1136 1137config ARM_ASM_UNIFIED 1138 bool 1139 1140config AEABI 1141 bool "Use the ARM EABI to compile the kernel" 1142 help 1143 This option allows for the kernel to be compiled using the latest 1144 ARM ABI (aka EABI). This is only useful if you are using a user 1145 space environment that is also compiled with EABI. 1146 1147 Since there are major incompatibilities between the legacy ABI and 1148 EABI, especially with regard to structure member alignment, this 1149 option also changes the kernel syscall calling convention to 1150 disambiguate both ABIs and allow for backward compatibility support 1151 (selected with CONFIG_OABI_COMPAT). 1152 1153 To use this you need GCC version 4.0.0 or later. 1154 1155config OABI_COMPAT 1156 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" 1157 depends on AEABI && EXPERIMENTAL 1158 default y 1159 help 1160 This option preserves the old syscall interface along with the 1161 new (ARM EABI) one. It also provides a compatibility layer to 1162 intercept syscalls that have structure arguments which layout 1163 in memory differs between the legacy ABI and the new ARM EABI 1164 (only for non "thumb" binaries). This option adds a tiny 1165 overhead to all syscalls and produces a slightly larger kernel. 1166 If you know you'll be using only pure EABI user space then you 1167 can say N here. If this option is not selected and you attempt 1168 to execute a legacy ABI binary then the result will be 1169 UNPREDICTABLE (in fact it can be predicted that it won't work 1170 at all). If in doubt say Y. 1171 1172config ARCH_HAS_HOLES_MEMORYMODEL 1173 bool 1174 1175# Discontigmem is deprecated 1176config ARCH_DISCONTIGMEM_ENABLE 1177 bool 1178 1179config ARCH_SPARSEMEM_ENABLE 1180 bool 1181 1182config ARCH_SPARSEMEM_DEFAULT 1183 def_bool ARCH_SPARSEMEM_ENABLE 1184 1185config ARCH_SELECT_MEMORY_MODEL 1186 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE 1187 1188config NODES_SHIFT 1189 int 1190 default "4" if ARCH_LH7A40X 1191 default "2" 1192 depends on NEED_MULTIPLE_NODES 1193 1194config HIGHMEM 1195 bool "High Memory Support (EXPERIMENTAL)" 1196 depends on MMU && EXPERIMENTAL 1197 help 1198 The address space of ARM processors is only 4 Gigabytes large 1199 and it has to accommodate user address space, kernel address 1200 space as well as some memory mapped IO. That means that, if you 1201 have a large amount of physical memory and/or IO, not all of the 1202 memory can be "permanently mapped" by the kernel. The physical 1203 memory that is not permanently mapped is called "high memory". 1204 1205 Depending on the selected kernel/user memory split, minimum 1206 vmalloc space and actual amount of RAM, you may not need this 1207 option which should result in a slightly faster kernel. 1208 1209 If unsure, say n. 1210 1211config HIGHPTE 1212 bool "Allocate 2nd-level pagetables from highmem" 1213 depends on HIGHMEM 1214 depends on !OUTER_CACHE 1215 1216config HW_PERF_EVENTS 1217 bool "Enable hardware performance counter support for perf events" 1218 depends on PERF_EVENTS && CPU_HAS_PMU && (CPU_V6 || CPU_V7) 1219 default y 1220 help 1221 Enable hardware performance counter support for perf events. If 1222 disabled, perf events will use software events only. 1223 1224source "mm/Kconfig" 1225 1226config LEDS 1227 bool "Timer and CPU usage LEDs" 1228 depends on ARCH_CDB89712 || ARCH_EBSA110 || \ 1229 ARCH_EBSA285 || ARCH_INTEGRATOR || \ 1230 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ 1231 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ 1232 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ 1233 ARCH_AT91 || ARCH_DAVINCI || \ 1234 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW 1235 help 1236 If you say Y here, the LEDs on your machine will be used 1237 to provide useful information about your current system status. 1238 1239 If you are compiling a kernel for a NetWinder or EBSA-285, you will 1240 be able to select which LEDs are active using the options below. If 1241 you are compiling a kernel for the EBSA-110 or the LART however, the 1242 red LED will simply flash regularly to indicate that the system is 1243 still functional. It is safe to say Y here if you have a CATS 1244 system, but the driver will do nothing. 1245 1246config LEDS_TIMER 1247 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ 1248 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1249 || MACH_OMAP_PERSEUS2 1250 depends on LEDS 1251 depends on !GENERIC_CLOCKEVENTS 1252 default y if ARCH_EBSA110 1253 help 1254 If you say Y here, one of the system LEDs (the green one on the 1255 NetWinder, the amber one on the EBSA285, or the red one on the LART) 1256 will flash regularly to indicate that the system is still 1257 operational. This is mainly useful to kernel hackers who are 1258 debugging unstable kernels. 1259 1260 The LART uses the same LED for both Timer LED and CPU usage LED 1261 functions. You may choose to use both, but the Timer LED function 1262 will overrule the CPU usage LED. 1263 1264config LEDS_CPU 1265 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ 1266 !ARCH_OMAP) \ 1267 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1268 || MACH_OMAP_PERSEUS2 1269 depends on LEDS 1270 help 1271 If you say Y here, the red LED will be used to give a good real 1272 time indication of CPU usage, by lighting whenever the idle task 1273 is not currently executing. 1274 1275 The LART uses the same LED for both Timer LED and CPU usage LED 1276 functions. You may choose to use both, but the Timer LED function 1277 will overrule the CPU usage LED. 1278 1279config ALIGNMENT_TRAP 1280 bool 1281 depends on CPU_CP15_MMU 1282 default y if !ARCH_EBSA110 1283 select HAVE_PROC_CPU if PROC_FS 1284 help 1285 ARM processors cannot fetch/store information which is not 1286 naturally aligned on the bus, i.e., a 4 byte fetch must start at an 1287 address divisible by 4. On 32-bit ARM processors, these non-aligned 1288 fetch/store instructions will be emulated in software if you say 1289 here, which has a severe performance impact. This is necessary for 1290 correct operation of some network protocols. With an IP-only 1291 configuration it is safe to say N, otherwise say Y. 1292 1293config UACCESS_WITH_MEMCPY 1294 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)" 1295 depends on MMU && EXPERIMENTAL 1296 default y if CPU_FEROCEON 1297 help 1298 Implement faster copy_to_user and clear_user methods for CPU 1299 cores where a 8-word STM instruction give significantly higher 1300 memory write throughput than a sequence of individual 32bit stores. 1301 1302 A possible side effect is a slight increase in scheduling latency 1303 between threads sharing the same address space if they invoke 1304 such copy operations with large buffers. 1305 1306 However, if the CPU data cache is using a write-allocate mode, 1307 this option is unlikely to provide any performance gain. 1308 1309endmenu 1310 1311menu "Boot options" 1312 1313# Compressed boot loader in ROM. Yes, we really want to ask about 1314# TEXT and BSS so we preserve their values in the config files. 1315config ZBOOT_ROM_TEXT 1316 hex "Compressed ROM boot loader base address" 1317 default "0" 1318 help 1319 The physical address at which the ROM-able zImage is to be 1320 placed in the target. Platforms which normally make use of 1321 ROM-able zImage formats normally set this to a suitable 1322 value in their defconfig file. 1323 1324 If ZBOOT_ROM is not enabled, this has no effect. 1325 1326config ZBOOT_ROM_BSS 1327 hex "Compressed ROM boot loader BSS address" 1328 default "0" 1329 help 1330 The base address of an area of read/write memory in the target 1331 for the ROM-able zImage which must be available while the 1332 decompressor is running. It must be large enough to hold the 1333 entire decompressed kernel plus an additional 128 KiB. 1334 Platforms which normally make use of ROM-able zImage formats 1335 normally set this to a suitable value in their defconfig file. 1336 1337 If ZBOOT_ROM is not enabled, this has no effect. 1338 1339config ZBOOT_ROM 1340 bool "Compressed boot loader in ROM/flash" 1341 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS 1342 help 1343 Say Y here if you intend to execute your compressed kernel image 1344 (zImage) directly from ROM or flash. If unsure, say N. 1345 1346config CMDLINE 1347 string "Default kernel command string" 1348 default "" 1349 help 1350 On some architectures (EBSA110 and CATS), there is currently no way 1351 for the boot loader to pass arguments to the kernel. For these 1352 architectures, you should supply some command-line options at build 1353 time by entering them here. As a minimum, you should specify the 1354 memory size and the root device (e.g., mem=64M root=/dev/nfs). 1355 1356config XIP_KERNEL 1357 bool "Kernel Execute-In-Place from ROM" 1358 depends on !ZBOOT_ROM 1359 help 1360 Execute-In-Place allows the kernel to run from non-volatile storage 1361 directly addressable by the CPU, such as NOR flash. This saves RAM 1362 space since the text section of the kernel is not loaded from flash 1363 to RAM. Read-write sections, such as the data section and stack, 1364 are still copied to RAM. The XIP kernel is not compressed since 1365 it has to run directly from flash, so it will take more space to 1366 store it. The flash address used to link the kernel object files, 1367 and for storing it, is configuration dependent. Therefore, if you 1368 say Y here, you must know the proper physical address where to 1369 store the kernel image depending on your own flash memory usage. 1370 1371 Also note that the make target becomes "make xipImage" rather than 1372 "make zImage" or "make Image". The final kernel binary to put in 1373 ROM memory will be arch/arm/boot/xipImage. 1374 1375 If unsure, say N. 1376 1377config XIP_PHYS_ADDR 1378 hex "XIP Kernel Physical Location" 1379 depends on XIP_KERNEL 1380 default "0x00080000" 1381 help 1382 This is the physical address in your flash memory the kernel will 1383 be linked for and stored to. This address is dependent on your 1384 own flash usage. 1385 1386config KEXEC 1387 bool "Kexec system call (EXPERIMENTAL)" 1388 depends on EXPERIMENTAL 1389 help 1390 kexec is a system call that implements the ability to shutdown your 1391 current kernel, and to start another kernel. It is like a reboot 1392 but it is independent of the system firmware. And like a reboot 1393 you can start any kernel with it, not just Linux. 1394 1395 It is an ongoing process to be certain the hardware in a machine 1396 is properly shutdown, so do not be surprised if this code does not 1397 initially work for you. It may help to enable device hotplugging 1398 support. 1399 1400config ATAGS_PROC 1401 bool "Export atags in procfs" 1402 depends on KEXEC 1403 default y 1404 help 1405 Should the atags used to boot the kernel be exported in an "atags" 1406 file in procfs. Useful with kexec. 1407 1408endmenu 1409 1410menu "CPU Power Management" 1411 1412if ARCH_HAS_CPUFREQ 1413 1414source "drivers/cpufreq/Kconfig" 1415 1416config CPU_FREQ_SA1100 1417 bool 1418 1419config CPU_FREQ_SA1110 1420 bool 1421 1422config CPU_FREQ_INTEGRATOR 1423 tristate "CPUfreq driver for ARM Integrator CPUs" 1424 depends on ARCH_INTEGRATOR && CPU_FREQ 1425 default y 1426 help 1427 This enables the CPUfreq driver for ARM Integrator CPUs. 1428 1429 For details, take a look at <file:Documentation/cpu-freq>. 1430 1431 If in doubt, say Y. 1432 1433config CPU_FREQ_PXA 1434 bool 1435 depends on CPU_FREQ && ARCH_PXA && PXA25x 1436 default y 1437 select CPU_FREQ_DEFAULT_GOV_USERSPACE 1438 1439config CPU_FREQ_S3C64XX 1440 bool "CPUfreq support for Samsung S3C64XX CPUs" 1441 depends on CPU_FREQ && CPU_S3C6410 1442 1443config CPU_FREQ_S3C 1444 bool 1445 help 1446 Internal configuration node for common cpufreq on Samsung SoC 1447 1448config CPU_FREQ_S3C24XX 1449 bool "CPUfreq driver for Samsung S3C24XX series CPUs" 1450 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL 1451 select CPU_FREQ_S3C 1452 help 1453 This enables the CPUfreq driver for the Samsung S3C24XX family 1454 of CPUs. 1455 1456 For details, take a look at <file:Documentation/cpu-freq>. 1457 1458 If in doubt, say N. 1459 1460config CPU_FREQ_S3C24XX_PLL 1461 bool "Support CPUfreq changing of PLL frequency" 1462 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL 1463 help 1464 Compile in support for changing the PLL frequency from the 1465 S3C24XX series CPUfreq driver. The PLL takes time to settle 1466 after a frequency change, so by default it is not enabled. 1467 1468 This also means that the PLL tables for the selected CPU(s) will 1469 be built which may increase the size of the kernel image. 1470 1471config CPU_FREQ_S3C24XX_DEBUG 1472 bool "Debug CPUfreq Samsung driver core" 1473 depends on CPU_FREQ_S3C24XX 1474 help 1475 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core 1476 1477config CPU_FREQ_S3C24XX_IODEBUG 1478 bool "Debug CPUfreq Samsung driver IO timing" 1479 depends on CPU_FREQ_S3C24XX 1480 help 1481 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core 1482 1483config CPU_FREQ_S3C24XX_DEBUGFS 1484 bool "Export debugfs for CPUFreq" 1485 depends on CPU_FREQ_S3C24XX && DEBUG_FS 1486 help 1487 Export status information via debugfs. 1488 1489endif 1490 1491source "drivers/cpuidle/Kconfig" 1492 1493endmenu 1494 1495menu "Floating point emulation" 1496 1497comment "At least one emulation must be selected" 1498 1499config FPE_NWFPE 1500 bool "NWFPE math emulation" 1501 depends on !AEABI || OABI_COMPAT 1502 ---help--- 1503 Say Y to include the NWFPE floating point emulator in the kernel. 1504 This is necessary to run most binaries. Linux does not currently 1505 support floating point hardware so you need to say Y here even if 1506 your machine has an FPA or floating point co-processor podule. 1507 1508 You may say N here if you are going to load the Acorn FPEmulator 1509 early in the bootup. 1510 1511config FPE_NWFPE_XP 1512 bool "Support extended precision" 1513 depends on FPE_NWFPE 1514 help 1515 Say Y to include 80-bit support in the kernel floating-point 1516 emulator. Otherwise, only 32 and 64-bit support is compiled in. 1517 Note that gcc does not generate 80-bit operations by default, 1518 so in most cases this option only enlarges the size of the 1519 floating point emulator without any good reason. 1520 1521 You almost surely want to say N here. 1522 1523config FPE_FASTFPE 1524 bool "FastFPE math emulation (EXPERIMENTAL)" 1525 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL 1526 ---help--- 1527 Say Y here to include the FAST floating point emulator in the kernel. 1528 This is an experimental much faster emulator which now also has full 1529 precision for the mantissa. It does not support any exceptions. 1530 It is very simple, and approximately 3-6 times faster than NWFPE. 1531 1532 It should be sufficient for most programs. It may be not suitable 1533 for scientific calculations, but you have to check this for yourself. 1534 If you do not feel you need a faster FP emulation you should better 1535 choose NWFPE. 1536 1537config VFP 1538 bool "VFP-format floating point maths" 1539 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON 1540 help 1541 Say Y to include VFP support code in the kernel. This is needed 1542 if your hardware includes a VFP unit. 1543 1544 Please see <file:Documentation/arm/VFP/release-notes.txt> for 1545 release notes and additional status information. 1546 1547 Say N if your target does not have VFP hardware. 1548 1549config VFPv3 1550 bool 1551 depends on VFP 1552 default y if CPU_V7 1553 1554config NEON 1555 bool "Advanced SIMD (NEON) Extension support" 1556 depends on VFPv3 && CPU_V7 1557 help 1558 Say Y to include support code for NEON, the ARMv7 Advanced SIMD 1559 Extension. 1560 1561endmenu 1562 1563menu "Userspace binary formats" 1564 1565source "fs/Kconfig.binfmt" 1566 1567config ARTHUR 1568 tristate "RISC OS personality" 1569 depends on !AEABI 1570 help 1571 Say Y here to include the kernel code necessary if you want to run 1572 Acorn RISC OS/Arthur binaries under Linux. This code is still very 1573 experimental; if this sounds frightening, say N and sleep in peace. 1574 You can also say M here to compile this support as a module (which 1575 will be called arthur). 1576 1577endmenu 1578 1579menu "Power management options" 1580 1581source "kernel/power/Kconfig" 1582 1583config ARCH_SUSPEND_POSSIBLE 1584 def_bool y 1585 1586endmenu 1587 1588source "net/Kconfig" 1589 1590source "drivers/Kconfig" 1591 1592source "fs/Kconfig" 1593 1594source "arch/arm/Kconfig.debug" 1595 1596source "security/Kconfig" 1597 1598source "crypto/Kconfig" 1599 1600source "lib/Kconfig" 1601