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 if (HAVE_PERF_EVENTS) 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_KERNEL_LZMA 25 select HAVE_PERF_EVENTS 26 select PERF_USE_VMALLOC 27 help 28 The ARM series is a line of low-power-consumption RISC chip designs 29 licensed by ARM Ltd and targeted at embedded applications and 30 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer 31 manufactured, but legacy ARM-based PC hardware remains popular in 32 Europe. There is an ARM Linux project with a web page at 33 <http://www.arm.linux.org.uk/>. 34 35config HAVE_PWM 36 bool 37 38config SYS_SUPPORTS_APM_EMULATION 39 bool 40 41config GENERIC_GPIO 42 bool 43 44config GENERIC_TIME 45 bool 46 default y 47 48config ARCH_USES_GETTIMEOFFSET 49 bool 50 default n 51 52config GENERIC_CLOCKEVENTS 53 bool 54 55config GENERIC_CLOCKEVENTS_BROADCAST 56 bool 57 depends on GENERIC_CLOCKEVENTS 58 default y if SMP && !LOCAL_TIMERS 59 60config HAVE_TCM 61 bool 62 select GENERIC_ALLOCATOR 63 64config HAVE_PROC_CPU 65 bool 66 67config NO_IOPORT 68 bool 69 70config EISA 71 bool 72 ---help--- 73 The Extended Industry Standard Architecture (EISA) bus was 74 developed as an open alternative to the IBM MicroChannel bus. 75 76 The EISA bus provided some of the features of the IBM MicroChannel 77 bus while maintaining backward compatibility with cards made for 78 the older ISA bus. The EISA bus saw limited use between 1988 and 79 1995 when it was made obsolete by the PCI bus. 80 81 Say Y here if you are building a kernel for an EISA-based machine. 82 83 Otherwise, say N. 84 85config SBUS 86 bool 87 88config MCA 89 bool 90 help 91 MicroChannel Architecture is found in some IBM PS/2 machines and 92 laptops. It is a bus system similar to PCI or ISA. See 93 <file:Documentation/mca.txt> (and especially the web page given 94 there) before attempting to build an MCA bus kernel. 95 96config GENERIC_HARDIRQS 97 bool 98 default y 99 100config STACKTRACE_SUPPORT 101 bool 102 default y 103 104config HAVE_LATENCYTOP_SUPPORT 105 bool 106 depends on !SMP 107 default y 108 109config LOCKDEP_SUPPORT 110 bool 111 default y 112 113config TRACE_IRQFLAGS_SUPPORT 114 bool 115 default y 116 117config HARDIRQS_SW_RESEND 118 bool 119 default y 120 121config GENERIC_IRQ_PROBE 122 bool 123 default y 124 125config GENERIC_LOCKBREAK 126 bool 127 default y 128 depends on SMP && PREEMPT 129 130config RWSEM_GENERIC_SPINLOCK 131 bool 132 default y 133 134config RWSEM_XCHGADD_ALGORITHM 135 bool 136 137config ARCH_HAS_ILOG2_U32 138 bool 139 140config ARCH_HAS_ILOG2_U64 141 bool 142 143config ARCH_HAS_CPUFREQ 144 bool 145 help 146 Internal node to signify that the ARCH has CPUFREQ support 147 and that the relevant menu configurations are displayed for 148 it. 149 150config GENERIC_HWEIGHT 151 bool 152 default y 153 154config GENERIC_CALIBRATE_DELAY 155 bool 156 default y 157 158config ARCH_MAY_HAVE_PC_FDC 159 bool 160 161config ZONE_DMA 162 bool 163 164config NEED_DMA_MAP_STATE 165 def_bool y 166 167config GENERIC_ISA_DMA 168 bool 169 170config FIQ 171 bool 172 173config ARCH_MTD_XIP 174 bool 175 176config GENERIC_HARDIRQS_NO__DO_IRQ 177 def_bool y 178 179config ARM_L1_CACHE_SHIFT_6 180 bool 181 help 182 Setting ARM L1 cache line size to 64 Bytes. 183 184config VECTORS_BASE 185 hex 186 default 0xffff0000 if MMU || CPU_HIGH_VECTOR 187 default DRAM_BASE if REMAP_VECTORS_TO_RAM 188 default 0x00000000 189 help 190 The base address of exception vectors. 191 192source "init/Kconfig" 193 194source "kernel/Kconfig.freezer" 195 196menu "System Type" 197 198config MMU 199 bool "MMU-based Paged Memory Management Support" 200 default y 201 help 202 Select if you want MMU-based virtualised addressing space 203 support by paged memory management. If unsure, say 'Y'. 204 205# 206# The "ARM system type" choice list is ordered alphabetically by option 207# text. Please add new entries in the option alphabetic order. 208# 209choice 210 prompt "ARM system type" 211 default ARCH_VERSATILE 212 213config ARCH_AAEC2000 214 bool "Agilent AAEC-2000 based" 215 select CPU_ARM920T 216 select ARM_AMBA 217 select HAVE_CLK 218 select ARCH_USES_GETTIMEOFFSET 219 help 220 This enables support for systems based on the Agilent AAEC-2000 221 222config ARCH_INTEGRATOR 223 bool "ARM Ltd. Integrator family" 224 select ARM_AMBA 225 select ARCH_HAS_CPUFREQ 226 select COMMON_CLKDEV 227 select ICST 228 select GENERIC_CLOCKEVENTS 229 select PLAT_VERSATILE 230 help 231 Support for ARM's Integrator platform. 232 233config ARCH_REALVIEW 234 bool "ARM Ltd. RealView family" 235 select ARM_AMBA 236 select COMMON_CLKDEV 237 select ICST 238 select GENERIC_CLOCKEVENTS 239 select ARCH_WANT_OPTIONAL_GPIOLIB 240 select PLAT_VERSATILE 241 select ARM_TIMER_SP804 242 select GPIO_PL061 if GPIOLIB 243 help 244 This enables support for ARM Ltd RealView boards. 245 246config ARCH_VERSATILE 247 bool "ARM Ltd. Versatile family" 248 select ARM_AMBA 249 select ARM_VIC 250 select COMMON_CLKDEV 251 select ICST 252 select GENERIC_CLOCKEVENTS 253 select ARCH_WANT_OPTIONAL_GPIOLIB 254 select PLAT_VERSATILE 255 select ARM_TIMER_SP804 256 help 257 This enables support for ARM Ltd Versatile board. 258 259config ARCH_VEXPRESS 260 bool "ARM Ltd. Versatile Express family" 261 select ARCH_WANT_OPTIONAL_GPIOLIB 262 select ARM_AMBA 263 select ARM_TIMER_SP804 264 select COMMON_CLKDEV 265 select GENERIC_CLOCKEVENTS 266 select HAVE_CLK 267 select ICST 268 select PLAT_VERSATILE 269 help 270 This enables support for the ARM Ltd Versatile Express boards. 271 272config ARCH_AT91 273 bool "Atmel AT91" 274 select ARCH_REQUIRE_GPIOLIB 275 select HAVE_CLK 276 select ARCH_USES_GETTIMEOFFSET 277 help 278 This enables support for systems based on the Atmel AT91RM9200, 279 AT91SAM9 and AT91CAP9 processors. 280 281config ARCH_BCMRING 282 bool "Broadcom BCMRING" 283 depends on MMU 284 select CPU_V6 285 select ARM_AMBA 286 select COMMON_CLKDEV 287 select GENERIC_CLOCKEVENTS 288 select ARCH_WANT_OPTIONAL_GPIOLIB 289 help 290 Support for Broadcom's BCMRing platform. 291 292config ARCH_CLPS711X 293 bool "Cirrus Logic CLPS711x/EP721x-based" 294 select CPU_ARM720T 295 select ARCH_USES_GETTIMEOFFSET 296 help 297 Support for Cirrus Logic 711x/721x based boards. 298 299config ARCH_CNS3XXX 300 bool "Cavium Networks CNS3XXX family" 301 select CPU_V6 302 select GENERIC_CLOCKEVENTS 303 select ARM_GIC 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_L7200 443 bool "LinkUp-L7200" 444 select CPU_ARM720T 445 select FIQ 446 select ARCH_USES_GETTIMEOFFSET 447 help 448 Say Y here if you intend to run this kernel on a LinkUp Systems 449 L7200 Software Development Board which uses an ARM720T processor. 450 Information on this board can be obtained at: 451 452 <http://www.linkupsys.com/> 453 454 If you have any questions or comments about the Linux kernel port 455 to this board, send e-mail to <sjhill@cotw.com>. 456 457config ARCH_DOVE 458 bool "Marvell Dove" 459 select PCI 460 select ARCH_REQUIRE_GPIOLIB 461 select GENERIC_CLOCKEVENTS 462 select PLAT_ORION 463 help 464 Support for the Marvell Dove SoC 88AP510 465 466config ARCH_KIRKWOOD 467 bool "Marvell Kirkwood" 468 select CPU_FEROCEON 469 select PCI 470 select ARCH_REQUIRE_GPIOLIB 471 select GENERIC_CLOCKEVENTS 472 select PLAT_ORION 473 help 474 Support for the following Marvell Kirkwood series SoCs: 475 88F6180, 88F6192 and 88F6281. 476 477config ARCH_LOKI 478 bool "Marvell Loki (88RC8480)" 479 select CPU_FEROCEON 480 select GENERIC_CLOCKEVENTS 481 select PLAT_ORION 482 help 483 Support for the Marvell Loki (88RC8480) SoC. 484 485config ARCH_MV78XX0 486 bool "Marvell MV78xx0" 487 select CPU_FEROCEON 488 select PCI 489 select ARCH_REQUIRE_GPIOLIB 490 select GENERIC_CLOCKEVENTS 491 select PLAT_ORION 492 help 493 Support for the following Marvell MV78xx0 series SoCs: 494 MV781x0, MV782x0. 495 496config ARCH_ORION5X 497 bool "Marvell Orion" 498 depends on MMU 499 select CPU_FEROCEON 500 select PCI 501 select ARCH_REQUIRE_GPIOLIB 502 select GENERIC_CLOCKEVENTS 503 select PLAT_ORION 504 help 505 Support for the following Marvell Orion 5x series SoCs: 506 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182), 507 Orion-2 (5281), Orion-1-90 (6183). 508 509config ARCH_MMP 510 bool "Marvell PXA168/910/MMP2" 511 depends on MMU 512 select ARCH_REQUIRE_GPIOLIB 513 select COMMON_CLKDEV 514 select GENERIC_CLOCKEVENTS 515 select TICK_ONESHOT 516 select PLAT_PXA 517 help 518 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line. 519 520config ARCH_KS8695 521 bool "Micrel/Kendin KS8695" 522 select CPU_ARM922T 523 select ARCH_REQUIRE_GPIOLIB 524 select ARCH_USES_GETTIMEOFFSET 525 help 526 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based 527 System-on-Chip devices. 528 529config ARCH_NS9XXX 530 bool "NetSilicon NS9xxx" 531 select CPU_ARM926T 532 select GENERIC_GPIO 533 select GENERIC_CLOCKEVENTS 534 select HAVE_CLK 535 help 536 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx 537 System. 538 539 <http://www.digi.com/products/microprocessors/index.jsp> 540 541config ARCH_W90X900 542 bool "Nuvoton W90X900 CPU" 543 select CPU_ARM926T 544 select ARCH_REQUIRE_GPIOLIB 545 select COMMON_CLKDEV 546 select GENERIC_CLOCKEVENTS 547 help 548 Support for Nuvoton (Winbond logic dept.) ARM9 processor, 549 At present, the w90x900 has been renamed nuc900, regarding 550 the ARM series product line, you can login the following 551 link address to know more. 552 553 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/ 554 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller> 555 556config ARCH_NUC93X 557 bool "Nuvoton NUC93X CPU" 558 select CPU_ARM926T 559 select COMMON_CLKDEV 560 help 561 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a 562 low-power and high performance MPEG-4/JPEG multimedia controller chip. 563 564config ARCH_PNX4008 565 bool "Philips Nexperia PNX4008 Mobile" 566 select CPU_ARM926T 567 select COMMON_CLKDEV 568 select ARCH_USES_GETTIMEOFFSET 569 help 570 This enables support for Philips PNX4008 mobile platform. 571 572config ARCH_PXA 573 bool "PXA2xx/PXA3xx-based" 574 depends on MMU 575 select ARCH_MTD_XIP 576 select ARCH_HAS_CPUFREQ 577 select COMMON_CLKDEV 578 select ARCH_REQUIRE_GPIOLIB 579 select GENERIC_CLOCKEVENTS 580 select TICK_ONESHOT 581 select PLAT_PXA 582 help 583 Support for Intel/Marvell's PXA2xx/PXA3xx processor line. 584 585config ARCH_MSM 586 bool "Qualcomm MSM" 587 select HAVE_CLK 588 select GENERIC_CLOCKEVENTS 589 help 590 Support for Qualcomm MSM/QSD based systems. This runs on the 591 apps processor of the MSM/QSD and depends on a shared memory 592 interface to the modem processor which runs the baseband 593 stack and controls some vital subsystems 594 (clock and power control, etc). 595 596config ARCH_SHMOBILE 597 bool "Renesas SH-Mobile" 598 help 599 Support for Renesas's SH-Mobile ARM platforms 600 601config ARCH_RPC 602 bool "RiscPC" 603 select ARCH_ACORN 604 select FIQ 605 select TIMER_ACORN 606 select ARCH_MAY_HAVE_PC_FDC 607 select HAVE_PATA_PLATFORM 608 select ISA_DMA_API 609 select NO_IOPORT 610 select ARCH_SPARSEMEM_ENABLE 611 select ARCH_USES_GETTIMEOFFSET 612 help 613 On the Acorn Risc-PC, Linux can support the internal IDE disk and 614 CD-ROM interface, serial and parallel port, and the floppy drive. 615 616config ARCH_SA1100 617 bool "SA1100-based" 618 select CPU_SA1100 619 select ISA 620 select ARCH_SPARSEMEM_ENABLE 621 select ARCH_MTD_XIP 622 select ARCH_HAS_CPUFREQ 623 select CPU_FREQ 624 select GENERIC_CLOCKEVENTS 625 select HAVE_CLK 626 select TICK_ONESHOT 627 select ARCH_REQUIRE_GPIOLIB 628 help 629 Support for StrongARM 11x0 based boards. 630 631config ARCH_S3C2410 632 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450" 633 select GENERIC_GPIO 634 select ARCH_HAS_CPUFREQ 635 select HAVE_CLK 636 select ARCH_USES_GETTIMEOFFSET 637 help 638 Samsung S3C2410X CPU based systems, such as the Simtec Electronics 639 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or 640 the Samsung SMDK2410 development board (and derivatives). 641 642 Note, the S3C2416 and the S3C2450 are so close that they even share 643 the same SoC ID code. This means that there is no seperate machine 644 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first. 645 646config ARCH_S3C64XX 647 bool "Samsung S3C64XX" 648 select PLAT_SAMSUNG 649 select CPU_V6 650 select ARM_VIC 651 select HAVE_CLK 652 select NO_IOPORT 653 select ARCH_USES_GETTIMEOFFSET 654 select ARCH_HAS_CPUFREQ 655 select ARCH_REQUIRE_GPIOLIB 656 select SAMSUNG_CLKSRC 657 select SAMSUNG_IRQ_VIC_TIMER 658 select SAMSUNG_IRQ_UART 659 select S3C_GPIO_TRACK 660 select S3C_GPIO_PULL_UPDOWN 661 select S3C_GPIO_CFG_S3C24XX 662 select S3C_GPIO_CFG_S3C64XX 663 select S3C_DEV_NAND 664 select USB_ARCH_HAS_OHCI 665 select SAMSUNG_GPIOLIB_4BIT 666 help 667 Samsung S3C64XX series based systems 668 669config ARCH_S5P6440 670 bool "Samsung S5P6440" 671 select CPU_V6 672 select GENERIC_GPIO 673 select HAVE_CLK 674 select ARCH_USES_GETTIMEOFFSET 675 help 676 Samsung S5P6440 CPU based systems 677 678config ARCH_S5P6442 679 bool "Samsung S5P6442" 680 select CPU_V6 681 select GENERIC_GPIO 682 select HAVE_CLK 683 select ARCH_USES_GETTIMEOFFSET 684 help 685 Samsung S5P6442 CPU based systems 686 687config ARCH_S5PC100 688 bool "Samsung S5PC100" 689 select GENERIC_GPIO 690 select HAVE_CLK 691 select CPU_V7 692 select ARM_L1_CACHE_SHIFT_6 693 select ARCH_USES_GETTIMEOFFSET 694 help 695 Samsung S5PC100 series based systems 696 697config ARCH_S5PV210 698 bool "Samsung S5PV210/S5PC110" 699 select CPU_V7 700 select GENERIC_GPIO 701 select HAVE_CLK 702 select ARM_L1_CACHE_SHIFT_6 703 select ARCH_USES_GETTIMEOFFSET 704 help 705 Samsung S5PV210/S5PC110 series based systems 706 707config ARCH_SHARK 708 bool "Shark" 709 select CPU_SA110 710 select ISA 711 select ISA_DMA 712 select ZONE_DMA 713 select PCI 714 select ARCH_USES_GETTIMEOFFSET 715 help 716 Support for the StrongARM based Digital DNARD machine, also known 717 as "Shark" (<http://www.shark-linux.de/shark.html>). 718 719config ARCH_LH7A40X 720 bool "Sharp LH7A40X" 721 select CPU_ARM922T 722 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM 723 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM 724 select ARCH_USES_GETTIMEOFFSET 725 help 726 Say Y here for systems based on one of the Sharp LH7A40X 727 System on a Chip processors. These CPUs include an ARM922T 728 core with a wide array of integrated devices for 729 hand-held and low-power applications. 730 731config ARCH_U300 732 bool "ST-Ericsson U300 Series" 733 depends on MMU 734 select CPU_ARM926T 735 select HAVE_TCM 736 select ARM_AMBA 737 select ARM_VIC 738 select GENERIC_CLOCKEVENTS 739 select COMMON_CLKDEV 740 select GENERIC_GPIO 741 help 742 Support for ST-Ericsson U300 series mobile platforms. 743 744config ARCH_U8500 745 bool "ST-Ericsson U8500 Series" 746 select CPU_V7 747 select ARM_AMBA 748 select GENERIC_CLOCKEVENTS 749 select COMMON_CLKDEV 750 select ARCH_REQUIRE_GPIOLIB 751 help 752 Support for ST-Ericsson's Ux500 architecture 753 754config ARCH_NOMADIK 755 bool "STMicroelectronics Nomadik" 756 select ARM_AMBA 757 select ARM_VIC 758 select CPU_ARM926T 759 select COMMON_CLKDEV 760 select GENERIC_CLOCKEVENTS 761 select ARCH_REQUIRE_GPIOLIB 762 help 763 Support for the Nomadik platform by ST-Ericsson 764 765config ARCH_DAVINCI 766 bool "TI DaVinci" 767 select GENERIC_CLOCKEVENTS 768 select ARCH_REQUIRE_GPIOLIB 769 select ZONE_DMA 770 select HAVE_IDE 771 select COMMON_CLKDEV 772 select GENERIC_ALLOCATOR 773 select ARCH_HAS_HOLES_MEMORYMODEL 774 help 775 Support for TI's DaVinci platform. 776 777config ARCH_OMAP 778 bool "TI OMAP" 779 select HAVE_CLK 780 select ARCH_REQUIRE_GPIOLIB 781 select ARCH_HAS_CPUFREQ 782 select GENERIC_CLOCKEVENTS 783 select ARCH_HAS_HOLES_MEMORYMODEL 784 help 785 Support for TI's OMAP platform (OMAP1 and OMAP2). 786 787config PLAT_SPEAR 788 bool "ST SPEAr" 789 select ARM_AMBA 790 select ARCH_REQUIRE_GPIOLIB 791 select COMMON_CLKDEV 792 select GENERIC_CLOCKEVENTS 793 select HAVE_CLK 794 help 795 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx). 796 797endchoice 798 799# 800# This is sorted alphabetically by mach-* pathname. However, plat-* 801# Kconfigs may be included either alphabetically (according to the 802# plat- suffix) or along side the corresponding mach-* source. 803# 804source "arch/arm/mach-aaec2000/Kconfig" 805 806source "arch/arm/mach-at91/Kconfig" 807 808source "arch/arm/mach-bcmring/Kconfig" 809 810source "arch/arm/mach-clps711x/Kconfig" 811 812source "arch/arm/mach-cns3xxx/Kconfig" 813 814source "arch/arm/mach-davinci/Kconfig" 815 816source "arch/arm/mach-dove/Kconfig" 817 818source "arch/arm/mach-ep93xx/Kconfig" 819 820source "arch/arm/mach-footbridge/Kconfig" 821 822source "arch/arm/mach-gemini/Kconfig" 823 824source "arch/arm/mach-h720x/Kconfig" 825 826source "arch/arm/mach-integrator/Kconfig" 827 828source "arch/arm/mach-iop32x/Kconfig" 829 830source "arch/arm/mach-iop33x/Kconfig" 831 832source "arch/arm/mach-iop13xx/Kconfig" 833 834source "arch/arm/mach-ixp4xx/Kconfig" 835 836source "arch/arm/mach-ixp2000/Kconfig" 837 838source "arch/arm/mach-ixp23xx/Kconfig" 839 840source "arch/arm/mach-kirkwood/Kconfig" 841 842source "arch/arm/mach-ks8695/Kconfig" 843 844source "arch/arm/mach-lh7a40x/Kconfig" 845 846source "arch/arm/mach-loki/Kconfig" 847 848source "arch/arm/mach-msm/Kconfig" 849 850source "arch/arm/mach-mv78xx0/Kconfig" 851 852source "arch/arm/plat-mxc/Kconfig" 853 854source "arch/arm/mach-netx/Kconfig" 855 856source "arch/arm/mach-nomadik/Kconfig" 857source "arch/arm/plat-nomadik/Kconfig" 858 859source "arch/arm/mach-ns9xxx/Kconfig" 860 861source "arch/arm/mach-nuc93x/Kconfig" 862 863source "arch/arm/plat-omap/Kconfig" 864 865source "arch/arm/mach-omap1/Kconfig" 866 867source "arch/arm/mach-omap2/Kconfig" 868 869source "arch/arm/mach-orion5x/Kconfig" 870 871source "arch/arm/mach-pxa/Kconfig" 872source "arch/arm/plat-pxa/Kconfig" 873 874source "arch/arm/mach-mmp/Kconfig" 875 876source "arch/arm/mach-realview/Kconfig" 877 878source "arch/arm/mach-sa1100/Kconfig" 879 880source "arch/arm/plat-samsung/Kconfig" 881source "arch/arm/plat-s3c24xx/Kconfig" 882source "arch/arm/plat-s5p/Kconfig" 883 884source "arch/arm/plat-spear/Kconfig" 885 886if ARCH_S3C2410 887source "arch/arm/mach-s3c2400/Kconfig" 888source "arch/arm/mach-s3c2410/Kconfig" 889source "arch/arm/mach-s3c2412/Kconfig" 890source "arch/arm/mach-s3c2416/Kconfig" 891source "arch/arm/mach-s3c2440/Kconfig" 892source "arch/arm/mach-s3c2443/Kconfig" 893endif 894 895if ARCH_S3C64XX 896source "arch/arm/mach-s3c64xx/Kconfig" 897endif 898 899source "arch/arm/mach-s5p6440/Kconfig" 900 901source "arch/arm/mach-s5p6442/Kconfig" 902 903source "arch/arm/mach-s5pc100/Kconfig" 904 905source "arch/arm/mach-s5pv210/Kconfig" 906 907source "arch/arm/mach-shmobile/Kconfig" 908 909source "arch/arm/plat-stmp3xxx/Kconfig" 910 911source "arch/arm/mach-u300/Kconfig" 912 913source "arch/arm/mach-ux500/Kconfig" 914 915source "arch/arm/mach-versatile/Kconfig" 916 917source "arch/arm/mach-vexpress/Kconfig" 918 919source "arch/arm/mach-w90x900/Kconfig" 920 921# Definitions to make life easier 922config ARCH_ACORN 923 bool 924 925config PLAT_IOP 926 bool 927 select GENERIC_CLOCKEVENTS 928 929config PLAT_ORION 930 bool 931 932config PLAT_PXA 933 bool 934 935config PLAT_VERSATILE 936 bool 937 938config ARM_TIMER_SP804 939 bool 940 941source arch/arm/mm/Kconfig 942 943config IWMMXT 944 bool "Enable iWMMXt support" 945 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK 946 default y if PXA27x || PXA3xx || ARCH_MMP 947 help 948 Enable support for iWMMXt context switching at run time if 949 running on a CPU that supports it. 950 951# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER 952config XSCALE_PMU 953 bool 954 depends on CPU_XSCALE && !XSCALE_PMU_TIMER 955 default y 956 957config CPU_HAS_PMU 958 depends on CPU_V6 || CPU_V7 || XSCALE_PMU 959 default y 960 bool 961 962if !MMU 963source "arch/arm/Kconfig-nommu" 964endif 965 966config ARM_ERRATA_411920 967 bool "ARM errata: Invalidation of the Instruction Cache operation can fail" 968 depends on CPU_V6 && !SMP 969 help 970 Invalidation of the Instruction Cache operation can 971 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176. 972 It does not affect the MPCore. This option enables the ARM Ltd. 973 recommended workaround. 974 975config ARM_ERRATA_430973 976 bool "ARM errata: Stale prediction on replaced interworking branch" 977 depends on CPU_V7 978 help 979 This option enables the workaround for the 430973 Cortex-A8 980 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb 981 interworking branch is replaced with another code sequence at the 982 same virtual address, whether due to self-modifying code or virtual 983 to physical address re-mapping, Cortex-A8 does not recover from the 984 stale interworking branch prediction. This results in Cortex-A8 985 executing the new code sequence in the incorrect ARM or Thumb state. 986 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE 987 and also flushes the branch target cache at every context switch. 988 Note that setting specific bits in the ACTLR register may not be 989 available in non-secure mode. 990 991config ARM_ERRATA_458693 992 bool "ARM errata: Processor deadlock when a false hazard is created" 993 depends on CPU_V7 994 help 995 This option enables the workaround for the 458693 Cortex-A8 (r2p0) 996 erratum. For very specific sequences of memory operations, it is 997 possible for a hazard condition intended for a cache line to instead 998 be incorrectly associated with a different cache line. This false 999 hazard might then cause a processor deadlock. The workaround enables 1000 the L1 caching of the NEON accesses and disables the PLD instruction 1001 in the ACTLR register. Note that setting specific bits in the ACTLR 1002 register may not be available in non-secure mode. 1003 1004config ARM_ERRATA_460075 1005 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data" 1006 depends on CPU_V7 1007 help 1008 This option enables the workaround for the 460075 Cortex-A8 (r2p0) 1009 erratum. Any asynchronous access to the L2 cache may encounter a 1010 situation in which recent store transactions to the L2 cache are lost 1011 and overwritten with stale memory contents from external memory. The 1012 workaround disables the write-allocate mode for the L2 cache via the 1013 ACTLR register. Note that setting specific bits in the ACTLR register 1014 may not be available in non-secure mode. 1015 1016config PL310_ERRATA_588369 1017 bool "Clean & Invalidate maintenance operations do not invalidate clean lines" 1018 depends on CACHE_L2X0 && ARCH_OMAP4 1019 help 1020 The PL310 L2 cache controller implements three types of Clean & 1021 Invalidate maintenance operations: by Physical Address 1022 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC). 1023 They are architecturally defined to behave as the execution of a 1024 clean operation followed immediately by an invalidate operation, 1025 both performing to the same memory location. This functionality 1026 is not correctly implemented in PL310 as clean lines are not 1027 invalidated as a result of these operations. Note that this errata 1028 uses Texas Instrument's secure monitor api. 1029endmenu 1030 1031source "arch/arm/common/Kconfig" 1032 1033config FORCE_MAX_ZONEORDER 1034 int 1035 depends on SA1111 1036 default "9" 1037 1038menu "Bus support" 1039 1040config ARM_AMBA 1041 bool 1042 1043config ISA 1044 bool 1045 help 1046 Find out whether you have ISA slots on your motherboard. ISA is the 1047 name of a bus system, i.e. the way the CPU talks to the other stuff 1048 inside your box. Other bus systems are PCI, EISA, MicroChannel 1049 (MCA) or VESA. ISA is an older system, now being displaced by PCI; 1050 newer boards don't support it. If you have ISA, say Y, otherwise N. 1051 1052# Select ISA DMA controller support 1053config ISA_DMA 1054 bool 1055 select ISA_DMA_API 1056 1057# Select ISA DMA interface 1058config ISA_DMA_API 1059 bool 1060 1061config PCI 1062 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE 1063 help 1064 Find out whether you have a PCI motherboard. PCI is the name of a 1065 bus system, i.e. the way the CPU talks to the other stuff inside 1066 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 1067 VESA. If you have PCI, say Y, otherwise N. 1068 1069config PCI_DOMAINS 1070 bool 1071 depends on PCI 1072 1073config PCI_SYSCALL 1074 def_bool PCI 1075 1076# Select the host bridge type 1077config PCI_HOST_VIA82C505 1078 bool 1079 depends on PCI && ARCH_SHARK 1080 default y 1081 1082config PCI_HOST_ITE8152 1083 bool 1084 depends on PCI && MACH_ARMCORE 1085 default y 1086 select DMABOUNCE 1087 1088source "drivers/pci/Kconfig" 1089 1090source "drivers/pcmcia/Kconfig" 1091 1092endmenu 1093 1094menu "Kernel Features" 1095 1096source "kernel/time/Kconfig" 1097 1098config SMP 1099 bool "Symmetric Multi-Processing (EXPERIMENTAL)" 1100 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\ 1101 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\ 1102 ARCH_U8500 || ARCH_VEXPRESS_CA9X4) 1103 depends on GENERIC_CLOCKEVENTS 1104 select USE_GENERIC_SMP_HELPERS 1105 select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500 || ARCH_VEXPRESS_CA9X4) 1106 help 1107 This enables support for systems with more than one CPU. If you have 1108 a system with only one CPU, like most personal computers, say N. If 1109 you have a system with more than one CPU, say Y. 1110 1111 If you say N here, the kernel will run on single and multiprocessor 1112 machines, but will use only one CPU of a multiprocessor machine. If 1113 you say Y here, the kernel will run on many, but not all, single 1114 processor machines. On a single processor machine, the kernel will 1115 run faster if you say N here. 1116 1117 See also <file:Documentation/i386/IO-APIC.txt>, 1118 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at 1119 <http://www.linuxdoc.org/docs.html#howto>. 1120 1121 If you don't know what to do here, say N. 1122 1123config HAVE_ARM_SCU 1124 bool 1125 depends on SMP 1126 help 1127 This option enables support for the ARM system coherency unit 1128 1129config HAVE_ARM_TWD 1130 bool 1131 depends on SMP 1132 help 1133 This options enables support for the ARM timer and watchdog unit 1134 1135choice 1136 prompt "Memory split" 1137 default VMSPLIT_3G 1138 help 1139 Select the desired split between kernel and user memory. 1140 1141 If you are not absolutely sure what you are doing, leave this 1142 option alone! 1143 1144 config VMSPLIT_3G 1145 bool "3G/1G user/kernel split" 1146 config VMSPLIT_2G 1147 bool "2G/2G user/kernel split" 1148 config VMSPLIT_1G 1149 bool "1G/3G user/kernel split" 1150endchoice 1151 1152config PAGE_OFFSET 1153 hex 1154 default 0x40000000 if VMSPLIT_1G 1155 default 0x80000000 if VMSPLIT_2G 1156 default 0xC0000000 1157 1158config NR_CPUS 1159 int "Maximum number of CPUs (2-32)" 1160 range 2 32 1161 depends on SMP 1162 default "4" 1163 1164config HOTPLUG_CPU 1165 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 1166 depends on SMP && HOTPLUG && EXPERIMENTAL 1167 help 1168 Say Y here to experiment with turning CPUs off and on. CPUs 1169 can be controlled through /sys/devices/system/cpu. 1170 1171config LOCAL_TIMERS 1172 bool "Use local timer interrupts" 1173 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \ 1174 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500) 1175 default y 1176 select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500) 1177 help 1178 Enable support for local timers on SMP platforms, rather then the 1179 legacy IPI broadcast method. Local timers allows the system 1180 accounting to be spread across the timer interval, preventing a 1181 "thundering herd" at every timer tick. 1182 1183source kernel/Kconfig.preempt 1184 1185config HZ 1186 int 1187 default 128 if ARCH_L7200 1188 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210 1189 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER 1190 default AT91_TIMER_HZ if ARCH_AT91 1191 default 100 1192 1193config THUMB2_KERNEL 1194 bool "Compile the kernel in Thumb-2 mode" 1195 depends on CPU_V7 && EXPERIMENTAL 1196 select AEABI 1197 select ARM_ASM_UNIFIED 1198 help 1199 By enabling this option, the kernel will be compiled in 1200 Thumb-2 mode. A compiler/assembler that understand the unified 1201 ARM-Thumb syntax is needed. 1202 1203 If unsure, say N. 1204 1205config ARM_ASM_UNIFIED 1206 bool 1207 1208config AEABI 1209 bool "Use the ARM EABI to compile the kernel" 1210 help 1211 This option allows for the kernel to be compiled using the latest 1212 ARM ABI (aka EABI). This is only useful if you are using a user 1213 space environment that is also compiled with EABI. 1214 1215 Since there are major incompatibilities between the legacy ABI and 1216 EABI, especially with regard to structure member alignment, this 1217 option also changes the kernel syscall calling convention to 1218 disambiguate both ABIs and allow for backward compatibility support 1219 (selected with CONFIG_OABI_COMPAT). 1220 1221 To use this you need GCC version 4.0.0 or later. 1222 1223config OABI_COMPAT 1224 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" 1225 depends on AEABI && EXPERIMENTAL 1226 default y 1227 help 1228 This option preserves the old syscall interface along with the 1229 new (ARM EABI) one. It also provides a compatibility layer to 1230 intercept syscalls that have structure arguments which layout 1231 in memory differs between the legacy ABI and the new ARM EABI 1232 (only for non "thumb" binaries). This option adds a tiny 1233 overhead to all syscalls and produces a slightly larger kernel. 1234 If you know you'll be using only pure EABI user space then you 1235 can say N here. If this option is not selected and you attempt 1236 to execute a legacy ABI binary then the result will be 1237 UNPREDICTABLE (in fact it can be predicted that it won't work 1238 at all). If in doubt say Y. 1239 1240config ARCH_HAS_HOLES_MEMORYMODEL 1241 bool 1242 1243# Discontigmem is deprecated 1244config ARCH_DISCONTIGMEM_ENABLE 1245 bool 1246 1247config ARCH_SPARSEMEM_ENABLE 1248 bool 1249 1250config ARCH_SPARSEMEM_DEFAULT 1251 def_bool ARCH_SPARSEMEM_ENABLE 1252 1253config ARCH_SELECT_MEMORY_MODEL 1254 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE 1255 1256config NODES_SHIFT 1257 int 1258 default "4" if ARCH_LH7A40X 1259 default "2" 1260 depends on NEED_MULTIPLE_NODES 1261 1262config HIGHMEM 1263 bool "High Memory Support (EXPERIMENTAL)" 1264 depends on MMU && EXPERIMENTAL 1265 help 1266 The address space of ARM processors is only 4 Gigabytes large 1267 and it has to accommodate user address space, kernel address 1268 space as well as some memory mapped IO. That means that, if you 1269 have a large amount of physical memory and/or IO, not all of the 1270 memory can be "permanently mapped" by the kernel. The physical 1271 memory that is not permanently mapped is called "high memory". 1272 1273 Depending on the selected kernel/user memory split, minimum 1274 vmalloc space and actual amount of RAM, you may not need this 1275 option which should result in a slightly faster kernel. 1276 1277 If unsure, say n. 1278 1279config HIGHPTE 1280 bool "Allocate 2nd-level pagetables from highmem" 1281 depends on HIGHMEM 1282 depends on !OUTER_CACHE 1283 1284config HW_PERF_EVENTS 1285 bool "Enable hardware performance counter support for perf events" 1286 depends on PERF_EVENTS && CPU_HAS_PMU 1287 default y 1288 help 1289 Enable hardware performance counter support for perf events. If 1290 disabled, perf events will use software events only. 1291 1292source "mm/Kconfig" 1293 1294config LEDS 1295 bool "Timer and CPU usage LEDs" 1296 depends on ARCH_CDB89712 || ARCH_EBSA110 || \ 1297 ARCH_EBSA285 || ARCH_INTEGRATOR || \ 1298 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ 1299 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ 1300 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ 1301 ARCH_AT91 || ARCH_DAVINCI || \ 1302 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW 1303 help 1304 If you say Y here, the LEDs on your machine will be used 1305 to provide useful information about your current system status. 1306 1307 If you are compiling a kernel for a NetWinder or EBSA-285, you will 1308 be able to select which LEDs are active using the options below. If 1309 you are compiling a kernel for the EBSA-110 or the LART however, the 1310 red LED will simply flash regularly to indicate that the system is 1311 still functional. It is safe to say Y here if you have a CATS 1312 system, but the driver will do nothing. 1313 1314config LEDS_TIMER 1315 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ 1316 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1317 || MACH_OMAP_PERSEUS2 1318 depends on LEDS 1319 depends on !GENERIC_CLOCKEVENTS 1320 default y if ARCH_EBSA110 1321 help 1322 If you say Y here, one of the system LEDs (the green one on the 1323 NetWinder, the amber one on the EBSA285, or the red one on the LART) 1324 will flash regularly to indicate that the system is still 1325 operational. This is mainly useful to kernel hackers who are 1326 debugging unstable kernels. 1327 1328 The LART uses the same LED for both Timer LED and CPU usage LED 1329 functions. You may choose to use both, but the Timer LED function 1330 will overrule the CPU usage LED. 1331 1332config LEDS_CPU 1333 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ 1334 !ARCH_OMAP) \ 1335 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1336 || MACH_OMAP_PERSEUS2 1337 depends on LEDS 1338 help 1339 If you say Y here, the red LED will be used to give a good real 1340 time indication of CPU usage, by lighting whenever the idle task 1341 is not currently executing. 1342 1343 The LART uses the same LED for both Timer LED and CPU usage LED 1344 functions. You may choose to use both, but the Timer LED function 1345 will overrule the CPU usage LED. 1346 1347config ALIGNMENT_TRAP 1348 bool 1349 depends on CPU_CP15_MMU 1350 default y if !ARCH_EBSA110 1351 select HAVE_PROC_CPU if PROC_FS 1352 help 1353 ARM processors cannot fetch/store information which is not 1354 naturally aligned on the bus, i.e., a 4 byte fetch must start at an 1355 address divisible by 4. On 32-bit ARM processors, these non-aligned 1356 fetch/store instructions will be emulated in software if you say 1357 here, which has a severe performance impact. This is necessary for 1358 correct operation of some network protocols. With an IP-only 1359 configuration it is safe to say N, otherwise say Y. 1360 1361config UACCESS_WITH_MEMCPY 1362 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)" 1363 depends on MMU && EXPERIMENTAL 1364 default y if CPU_FEROCEON 1365 help 1366 Implement faster copy_to_user and clear_user methods for CPU 1367 cores where a 8-word STM instruction give significantly higher 1368 memory write throughput than a sequence of individual 32bit stores. 1369 1370 A possible side effect is a slight increase in scheduling latency 1371 between threads sharing the same address space if they invoke 1372 such copy operations with large buffers. 1373 1374 However, if the CPU data cache is using a write-allocate mode, 1375 this option is unlikely to provide any performance gain. 1376 1377config DEPRECATED_PARAM_STRUCT 1378 bool "Provide old way to pass kernel parameters" 1379 help 1380 This was deprecated in 2001 and announced to live on for 5 years. 1381 Some old boot loaders still use this way. 1382 1383endmenu 1384 1385menu "Boot options" 1386 1387# Compressed boot loader in ROM. Yes, we really want to ask about 1388# TEXT and BSS so we preserve their values in the config files. 1389config ZBOOT_ROM_TEXT 1390 hex "Compressed ROM boot loader base address" 1391 default "0" 1392 help 1393 The physical address at which the ROM-able zImage is to be 1394 placed in the target. Platforms which normally make use of 1395 ROM-able zImage formats normally set this to a suitable 1396 value in their defconfig file. 1397 1398 If ZBOOT_ROM is not enabled, this has no effect. 1399 1400config ZBOOT_ROM_BSS 1401 hex "Compressed ROM boot loader BSS address" 1402 default "0" 1403 help 1404 The base address of an area of read/write memory in the target 1405 for the ROM-able zImage which must be available while the 1406 decompressor is running. It must be large enough to hold the 1407 entire decompressed kernel plus an additional 128 KiB. 1408 Platforms which normally make use of ROM-able zImage formats 1409 normally set this to a suitable value in their defconfig file. 1410 1411 If ZBOOT_ROM is not enabled, this has no effect. 1412 1413config ZBOOT_ROM 1414 bool "Compressed boot loader in ROM/flash" 1415 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS 1416 help 1417 Say Y here if you intend to execute your compressed kernel image 1418 (zImage) directly from ROM or flash. If unsure, say N. 1419 1420config CMDLINE 1421 string "Default kernel command string" 1422 default "" 1423 help 1424 On some architectures (EBSA110 and CATS), there is currently no way 1425 for the boot loader to pass arguments to the kernel. For these 1426 architectures, you should supply some command-line options at build 1427 time by entering them here. As a minimum, you should specify the 1428 memory size and the root device (e.g., mem=64M root=/dev/nfs). 1429 1430config CMDLINE_FORCE 1431 bool "Always use the default kernel command string" 1432 depends on CMDLINE != "" 1433 help 1434 Always use the default kernel command string, even if the boot 1435 loader passes other arguments to the kernel. 1436 This is useful if you cannot or don't want to change the 1437 command-line options your boot loader passes to the kernel. 1438 1439 If unsure, say N. 1440 1441config XIP_KERNEL 1442 bool "Kernel Execute-In-Place from ROM" 1443 depends on !ZBOOT_ROM 1444 help 1445 Execute-In-Place allows the kernel to run from non-volatile storage 1446 directly addressable by the CPU, such as NOR flash. This saves RAM 1447 space since the text section of the kernel is not loaded from flash 1448 to RAM. Read-write sections, such as the data section and stack, 1449 are still copied to RAM. The XIP kernel is not compressed since 1450 it has to run directly from flash, so it will take more space to 1451 store it. The flash address used to link the kernel object files, 1452 and for storing it, is configuration dependent. Therefore, if you 1453 say Y here, you must know the proper physical address where to 1454 store the kernel image depending on your own flash memory usage. 1455 1456 Also note that the make target becomes "make xipImage" rather than 1457 "make zImage" or "make Image". The final kernel binary to put in 1458 ROM memory will be arch/arm/boot/xipImage. 1459 1460 If unsure, say N. 1461 1462config XIP_PHYS_ADDR 1463 hex "XIP Kernel Physical Location" 1464 depends on XIP_KERNEL 1465 default "0x00080000" 1466 help 1467 This is the physical address in your flash memory the kernel will 1468 be linked for and stored to. This address is dependent on your 1469 own flash usage. 1470 1471config KEXEC 1472 bool "Kexec system call (EXPERIMENTAL)" 1473 depends on EXPERIMENTAL 1474 help 1475 kexec is a system call that implements the ability to shutdown your 1476 current kernel, and to start another kernel. It is like a reboot 1477 but it is independent of the system firmware. And like a reboot 1478 you can start any kernel with it, not just Linux. 1479 1480 It is an ongoing process to be certain the hardware in a machine 1481 is properly shutdown, so do not be surprised if this code does not 1482 initially work for you. It may help to enable device hotplugging 1483 support. 1484 1485config ATAGS_PROC 1486 bool "Export atags in procfs" 1487 depends on KEXEC 1488 default y 1489 help 1490 Should the atags used to boot the kernel be exported in an "atags" 1491 file in procfs. Useful with kexec. 1492 1493config AUTO_ZRELADDR 1494 bool "Auto calculation of the decompressed kernel image address" 1495 depends on !ZBOOT_ROM && !ARCH_U300 1496 help 1497 ZRELADDR is the physical address where the decompressed kernel 1498 image will be placed. If AUTO_ZRELADDR is selected, the address 1499 will be determined at run-time by masking the current IP with 1500 0xf8000000. This assumes the zImage being placed in the first 128MB 1501 from start of memory. 1502 1503config ZRELADDR 1504 hex "Physical address of the decompressed kernel image" 1505 depends on !AUTO_ZRELADDR 1506 default 0x00008000 if ARCH_BCMRING ||\ 1507 ARCH_CNS3XXX ||\ 1508 ARCH_DOVE ||\ 1509 ARCH_EBSA110 ||\ 1510 ARCH_FOOTBRIDGE ||\ 1511 ARCH_INTEGRATOR ||\ 1512 ARCH_IOP13XX ||\ 1513 ARCH_IOP33X ||\ 1514 ARCH_IXP2000 ||\ 1515 ARCH_IXP23XX ||\ 1516 ARCH_IXP4XX ||\ 1517 ARCH_KIRKWOOD ||\ 1518 ARCH_KS8695 ||\ 1519 ARCH_LOKI ||\ 1520 ARCH_MMP ||\ 1521 ARCH_MV78XX0 ||\ 1522 ARCH_NOMADIK ||\ 1523 ARCH_NUC93X ||\ 1524 ARCH_NS9XXX ||\ 1525 ARCH_ORION5X ||\ 1526 ARCH_SPEAR3XX ||\ 1527 ARCH_SPEAR6XX ||\ 1528 ARCH_U8500 ||\ 1529 ARCH_VERSATILE ||\ 1530 ARCH_W90X900 1531 default 0x08008000 if ARCH_MX1 ||\ 1532 ARCH_SHARK 1533 default 0x10008000 if ARCH_MSM ||\ 1534 ARCH_OMAP1 ||\ 1535 ARCH_RPC 1536 default 0x20008000 if ARCH_S5P6440 ||\ 1537 ARCH_S5P6442 ||\ 1538 ARCH_S5PC100 ||\ 1539 ARCH_S5PV210 1540 default 0x30008000 if ARCH_S3C2410 ||\ 1541 ARCH_S3C2400 ||\ 1542 ARCH_S3C2412 ||\ 1543 ARCH_S3C2416 ||\ 1544 ARCH_S3C2440 ||\ 1545 ARCH_S3C2443 1546 default 0x40008000 if ARCH_STMP378X ||\ 1547 ARCH_STMP37XX ||\ 1548 ARCH_SH7372 ||\ 1549 ARCH_SH7377 1550 default 0x50008000 if ARCH_S3C64XX ||\ 1551 ARCH_SH7367 1552 default 0x60008000 if ARCH_VEXPRESS 1553 default 0x80008000 if ARCH_MX25 ||\ 1554 ARCH_MX3 ||\ 1555 ARCH_NETX ||\ 1556 ARCH_OMAP2PLUS ||\ 1557 ARCH_PNX4008 1558 default 0x90008000 if ARCH_MX5 ||\ 1559 ARCH_MX91231 1560 default 0xa0008000 if ARCH_IOP32X ||\ 1561 ARCH_PXA ||\ 1562 MACH_MX27 1563 default 0xc0008000 if ARCH_LH7A40X ||\ 1564 MACH_MX21 1565 default 0xf0008000 if ARCH_AAEC2000 ||\ 1566 ARCH_L7200 1567 default 0xc0028000 if ARCH_CLPS711X 1568 default 0x70008000 if ARCH_AT91 && (ARCH_AT91CAP9 || ARCH_AT91SAM9G45) 1569 default 0x20008000 if ARCH_AT91 && !(ARCH_AT91CAP9 || ARCH_AT91SAM9G45) 1570 default 0xc0008000 if ARCH_DAVINCI && ARCH_DAVINCI_DA8XX 1571 default 0x80008000 if ARCH_DAVINCI && !ARCH_DAVINCI_DA8XX 1572 default 0x00008000 if ARCH_EP93XX && EP93XX_SDCE3_SYNC_PHYS_OFFSET 1573 default 0xc0008000 if ARCH_EP93XX && EP93XX_SDCE0_PHYS_OFFSET 1574 default 0xd0008000 if ARCH_EP93XX && EP93XX_SDCE1_PHYS_OFFSET 1575 default 0xe0008000 if ARCH_EP93XX && EP93XX_SDCE2_PHYS_OFFSET 1576 default 0xf0008000 if ARCH_EP93XX && EP93XX_SDCE3_ASYNC_PHYS_OFFSET 1577 default 0x00008000 if ARCH_GEMINI && GEMINI_MEM_SWAP 1578 default 0x10008000 if ARCH_GEMINI && !GEMINI_MEM_SWAP 1579 default 0x70008000 if ARCH_REALVIEW && REALVIEW_HIGH_PHYS_OFFSET 1580 default 0x00008000 if ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET 1581 default 0xc0208000 if ARCH_SA1100 && SA1111 1582 default 0xc0008000 if ARCH_SA1100 && !SA1111 1583 default 0x30108000 if ARCH_S3C2410 && PM_H1940 1584 default 0x28E08000 if ARCH_U300 && MACH_U300_SINGLE_RAM 1585 default 0x48008000 if ARCH_U300 && !MACH_U300_SINGLE_RAM 1586 help 1587 ZRELADDR is the physical address where the decompressed kernel 1588 image will be placed. ZRELADDR has to be specified when the 1589 assumption of AUTO_ZRELADDR is not valid, or when ZBOOT_ROM is 1590 selected. 1591 1592endmenu 1593 1594menu "CPU Power Management" 1595 1596if ARCH_HAS_CPUFREQ 1597 1598source "drivers/cpufreq/Kconfig" 1599 1600config CPU_FREQ_SA1100 1601 bool 1602 1603config CPU_FREQ_SA1110 1604 bool 1605 1606config CPU_FREQ_INTEGRATOR 1607 tristate "CPUfreq driver for ARM Integrator CPUs" 1608 depends on ARCH_INTEGRATOR && CPU_FREQ 1609 default y 1610 help 1611 This enables the CPUfreq driver for ARM Integrator CPUs. 1612 1613 For details, take a look at <file:Documentation/cpu-freq>. 1614 1615 If in doubt, say Y. 1616 1617config CPU_FREQ_PXA 1618 bool 1619 depends on CPU_FREQ && ARCH_PXA && PXA25x 1620 default y 1621 select CPU_FREQ_DEFAULT_GOV_USERSPACE 1622 1623config CPU_FREQ_S3C64XX 1624 bool "CPUfreq support for Samsung S3C64XX CPUs" 1625 depends on CPU_FREQ && CPU_S3C6410 1626 1627config CPU_FREQ_S3C 1628 bool 1629 help 1630 Internal configuration node for common cpufreq on Samsung SoC 1631 1632config CPU_FREQ_S3C24XX 1633 bool "CPUfreq driver for Samsung S3C24XX series CPUs" 1634 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL 1635 select CPU_FREQ_S3C 1636 help 1637 This enables the CPUfreq driver for the Samsung S3C24XX family 1638 of CPUs. 1639 1640 For details, take a look at <file:Documentation/cpu-freq>. 1641 1642 If in doubt, say N. 1643 1644config CPU_FREQ_S3C24XX_PLL 1645 bool "Support CPUfreq changing of PLL frequency" 1646 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL 1647 help 1648 Compile in support for changing the PLL frequency from the 1649 S3C24XX series CPUfreq driver. The PLL takes time to settle 1650 after a frequency change, so by default it is not enabled. 1651 1652 This also means that the PLL tables for the selected CPU(s) will 1653 be built which may increase the size of the kernel image. 1654 1655config CPU_FREQ_S3C24XX_DEBUG 1656 bool "Debug CPUfreq Samsung driver core" 1657 depends on CPU_FREQ_S3C24XX 1658 help 1659 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core 1660 1661config CPU_FREQ_S3C24XX_IODEBUG 1662 bool "Debug CPUfreq Samsung driver IO timing" 1663 depends on CPU_FREQ_S3C24XX 1664 help 1665 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core 1666 1667config CPU_FREQ_S3C24XX_DEBUGFS 1668 bool "Export debugfs for CPUFreq" 1669 depends on CPU_FREQ_S3C24XX && DEBUG_FS 1670 help 1671 Export status information via debugfs. 1672 1673endif 1674 1675source "drivers/cpuidle/Kconfig" 1676 1677endmenu 1678 1679menu "Floating point emulation" 1680 1681comment "At least one emulation must be selected" 1682 1683config FPE_NWFPE 1684 bool "NWFPE math emulation" 1685 depends on !AEABI || OABI_COMPAT 1686 ---help--- 1687 Say Y to include the NWFPE floating point emulator in the kernel. 1688 This is necessary to run most binaries. Linux does not currently 1689 support floating point hardware so you need to say Y here even if 1690 your machine has an FPA or floating point co-processor podule. 1691 1692 You may say N here if you are going to load the Acorn FPEmulator 1693 early in the bootup. 1694 1695config FPE_NWFPE_XP 1696 bool "Support extended precision" 1697 depends on FPE_NWFPE 1698 help 1699 Say Y to include 80-bit support in the kernel floating-point 1700 emulator. Otherwise, only 32 and 64-bit support is compiled in. 1701 Note that gcc does not generate 80-bit operations by default, 1702 so in most cases this option only enlarges the size of the 1703 floating point emulator without any good reason. 1704 1705 You almost surely want to say N here. 1706 1707config FPE_FASTFPE 1708 bool "FastFPE math emulation (EXPERIMENTAL)" 1709 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL 1710 ---help--- 1711 Say Y here to include the FAST floating point emulator in the kernel. 1712 This is an experimental much faster emulator which now also has full 1713 precision for the mantissa. It does not support any exceptions. 1714 It is very simple, and approximately 3-6 times faster than NWFPE. 1715 1716 It should be sufficient for most programs. It may be not suitable 1717 for scientific calculations, but you have to check this for yourself. 1718 If you do not feel you need a faster FP emulation you should better 1719 choose NWFPE. 1720 1721config VFP 1722 bool "VFP-format floating point maths" 1723 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON 1724 help 1725 Say Y to include VFP support code in the kernel. This is needed 1726 if your hardware includes a VFP unit. 1727 1728 Please see <file:Documentation/arm/VFP/release-notes.txt> for 1729 release notes and additional status information. 1730 1731 Say N if your target does not have VFP hardware. 1732 1733config VFPv3 1734 bool 1735 depends on VFP 1736 default y if CPU_V7 1737 1738config NEON 1739 bool "Advanced SIMD (NEON) Extension support" 1740 depends on VFPv3 && CPU_V7 1741 help 1742 Say Y to include support code for NEON, the ARMv7 Advanced SIMD 1743 Extension. 1744 1745endmenu 1746 1747menu "Userspace binary formats" 1748 1749source "fs/Kconfig.binfmt" 1750 1751config ARTHUR 1752 tristate "RISC OS personality" 1753 depends on !AEABI 1754 help 1755 Say Y here to include the kernel code necessary if you want to run 1756 Acorn RISC OS/Arthur binaries under Linux. This code is still very 1757 experimental; if this sounds frightening, say N and sleep in peace. 1758 You can also say M here to compile this support as a module (which 1759 will be called arthur). 1760 1761endmenu 1762 1763menu "Power management options" 1764 1765source "kernel/power/Kconfig" 1766 1767config ARCH_SUSPEND_POSSIBLE 1768 def_bool y 1769 1770endmenu 1771 1772source "net/Kconfig" 1773 1774source "drivers/Kconfig" 1775 1776source "fs/Kconfig" 1777 1778source "arch/arm/Kconfig.debug" 1779 1780source "security/Kconfig" 1781 1782source "crypto/Kconfig" 1783 1784source "lib/Kconfig" 1785