1# 2# For a description of the syntax of this configuration file, 3# see Documentation/kbuild/kconfig-language.txt. 4# 5 6mainmenu "Linux Kernel Configuration" 7 8config ARM 9 bool 10 default y 11 select HAVE_AOUT 12 select HAVE_IDE 13 select HAVE_MEMBLOCK 14 select RTC_LIB 15 select SYS_SUPPORTS_APM_EMULATION 16 select GENERIC_ATOMIC64 if (!CPU_32v6K) 17 select HAVE_OPROFILE if (HAVE_PERF_EVENTS) 18 select HAVE_ARCH_KGDB 19 select HAVE_KPROBES if (!XIP_KERNEL) 20 select HAVE_KRETPROBES if (HAVE_KPROBES) 21 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL) 22 select HAVE_GENERIC_DMA_COHERENT 23 select HAVE_KERNEL_GZIP 24 select HAVE_KERNEL_LZO 25 select HAVE_KERNEL_LZMA 26 select HAVE_PERF_EVENTS 27 select PERF_USE_VMALLOC 28 select HAVE_REGS_AND_STACK_ACCESS_API 29 help 30 The ARM series is a line of low-power-consumption RISC chip designs 31 licensed by ARM Ltd and targeted at embedded applications and 32 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer 33 manufactured, but legacy ARM-based PC hardware remains popular in 34 Europe. There is an ARM Linux project with a web page at 35 <http://www.arm.linux.org.uk/>. 36 37config HAVE_PWM 38 bool 39 40config SYS_SUPPORTS_APM_EMULATION 41 bool 42 43config GENERIC_GPIO 44 bool 45 46config ARCH_USES_GETTIMEOFFSET 47 bool 48 default n 49 50config GENERIC_CLOCKEVENTS 51 bool 52 53config GENERIC_CLOCKEVENTS_BROADCAST 54 bool 55 depends on GENERIC_CLOCKEVENTS 56 default y if SMP 57 58config HAVE_TCM 59 bool 60 select GENERIC_ALLOCATOR 61 62config HAVE_PROC_CPU 63 bool 64 65config NO_IOPORT 66 bool 67 68config EISA 69 bool 70 ---help--- 71 The Extended Industry Standard Architecture (EISA) bus was 72 developed as an open alternative to the IBM MicroChannel bus. 73 74 The EISA bus provided some of the features of the IBM MicroChannel 75 bus while maintaining backward compatibility with cards made for 76 the older ISA bus. The EISA bus saw limited use between 1988 and 77 1995 when it was made obsolete by the PCI bus. 78 79 Say Y here if you are building a kernel for an EISA-based machine. 80 81 Otherwise, say N. 82 83config SBUS 84 bool 85 86config MCA 87 bool 88 help 89 MicroChannel Architecture is found in some IBM PS/2 machines and 90 laptops. It is a bus system similar to PCI or ISA. See 91 <file:Documentation/mca.txt> (and especially the web page given 92 there) before attempting to build an MCA bus kernel. 93 94config GENERIC_HARDIRQS 95 bool 96 default y 97 98config STACKTRACE_SUPPORT 99 bool 100 default y 101 102config HAVE_LATENCYTOP_SUPPORT 103 bool 104 depends on !SMP 105 default y 106 107config LOCKDEP_SUPPORT 108 bool 109 default y 110 111config TRACE_IRQFLAGS_SUPPORT 112 bool 113 default y 114 115config HARDIRQS_SW_RESEND 116 bool 117 default y 118 119config GENERIC_IRQ_PROBE 120 bool 121 default y 122 123config GENERIC_LOCKBREAK 124 bool 125 default y 126 depends on SMP && PREEMPT 127 128config RWSEM_GENERIC_SPINLOCK 129 bool 130 default y 131 132config RWSEM_XCHGADD_ALGORITHM 133 bool 134 135config ARCH_HAS_ILOG2_U32 136 bool 137 138config ARCH_HAS_ILOG2_U64 139 bool 140 141config ARCH_HAS_CPUFREQ 142 bool 143 help 144 Internal node to signify that the ARCH has CPUFREQ support 145 and that the relevant menu configurations are displayed for 146 it. 147 148config GENERIC_HWEIGHT 149 bool 150 default y 151 152config GENERIC_CALIBRATE_DELAY 153 bool 154 default y 155 156config ARCH_MAY_HAVE_PC_FDC 157 bool 158 159config ZONE_DMA 160 bool 161 162config NEED_DMA_MAP_STATE 163 def_bool y 164 165config GENERIC_ISA_DMA 166 bool 167 168config FIQ 169 bool 170 171config ARCH_MTD_XIP 172 bool 173 174config GENERIC_HARDIRQS_NO__DO_IRQ 175 def_bool y 176 177config ARM_L1_CACHE_SHIFT_6 178 bool 179 help 180 Setting ARM L1 cache line size to 64 Bytes. 181 182config VECTORS_BASE 183 hex 184 default 0xffff0000 if MMU || CPU_HIGH_VECTOR 185 default DRAM_BASE if REMAP_VECTORS_TO_RAM 186 default 0x00000000 187 help 188 The base address of exception vectors. 189 190source "init/Kconfig" 191 192source "kernel/Kconfig.freezer" 193 194menu "System Type" 195 196config MMU 197 bool "MMU-based Paged Memory Management Support" 198 default y 199 help 200 Select if you want MMU-based virtualised addressing space 201 support by paged memory management. If unsure, say 'Y'. 202 203# 204# The "ARM system type" choice list is ordered alphabetically by option 205# text. Please add new entries in the option alphabetic order. 206# 207choice 208 prompt "ARM system type" 209 default ARCH_VERSATILE 210 211config ARCH_AAEC2000 212 bool "Agilent AAEC-2000 based" 213 select CPU_ARM920T 214 select ARM_AMBA 215 select HAVE_CLK 216 select ARCH_USES_GETTIMEOFFSET 217 help 218 This enables support for systems based on the Agilent AAEC-2000 219 220config ARCH_INTEGRATOR 221 bool "ARM Ltd. Integrator family" 222 select ARM_AMBA 223 select ARCH_HAS_CPUFREQ 224 select COMMON_CLKDEV 225 select ICST 226 select GENERIC_CLOCKEVENTS 227 select PLAT_VERSATILE 228 help 229 Support for ARM's Integrator platform. 230 231config ARCH_REALVIEW 232 bool "ARM Ltd. RealView family" 233 select ARM_AMBA 234 select COMMON_CLKDEV 235 select ICST 236 select GENERIC_CLOCKEVENTS 237 select ARCH_WANT_OPTIONAL_GPIOLIB 238 select PLAT_VERSATILE 239 select ARM_TIMER_SP804 240 select GPIO_PL061 if GPIOLIB 241 help 242 This enables support for ARM Ltd RealView boards. 243 244config ARCH_VERSATILE 245 bool "ARM Ltd. Versatile family" 246 select ARM_AMBA 247 select ARM_VIC 248 select COMMON_CLKDEV 249 select ICST 250 select GENERIC_CLOCKEVENTS 251 select ARCH_WANT_OPTIONAL_GPIOLIB 252 select PLAT_VERSATILE 253 select ARM_TIMER_SP804 254 help 255 This enables support for ARM Ltd Versatile board. 256 257config ARCH_VEXPRESS 258 bool "ARM Ltd. Versatile Express family" 259 select ARCH_WANT_OPTIONAL_GPIOLIB 260 select ARM_AMBA 261 select ARM_TIMER_SP804 262 select COMMON_CLKDEV 263 select GENERIC_CLOCKEVENTS 264 select HAVE_CLK 265 select ICST 266 select PLAT_VERSATILE 267 help 268 This enables support for the ARM Ltd Versatile Express boards. 269 270config ARCH_AT91 271 bool "Atmel AT91" 272 select ARCH_REQUIRE_GPIOLIB 273 select HAVE_CLK 274 select ARCH_USES_GETTIMEOFFSET 275 help 276 This enables support for systems based on the Atmel AT91RM9200, 277 AT91SAM9 and AT91CAP9 processors. 278 279config ARCH_BCMRING 280 bool "Broadcom BCMRING" 281 depends on MMU 282 select CPU_V6 283 select ARM_AMBA 284 select COMMON_CLKDEV 285 select GENERIC_CLOCKEVENTS 286 select ARCH_WANT_OPTIONAL_GPIOLIB 287 help 288 Support for Broadcom's BCMRing platform. 289 290config ARCH_CLPS711X 291 bool "Cirrus Logic CLPS711x/EP721x-based" 292 select CPU_ARM720T 293 select ARCH_USES_GETTIMEOFFSET 294 help 295 Support for Cirrus Logic 711x/721x based boards. 296 297config ARCH_CNS3XXX 298 bool "Cavium Networks CNS3XXX family" 299 select CPU_V6 300 select GENERIC_CLOCKEVENTS 301 select ARM_GIC 302 select PCI_DOMAINS if PCI 303 help 304 Support for Cavium Networks CNS3XXX platform. 305 306config ARCH_GEMINI 307 bool "Cortina Systems Gemini" 308 select CPU_FA526 309 select ARCH_REQUIRE_GPIOLIB 310 select ARCH_USES_GETTIMEOFFSET 311 help 312 Support for the Cortina Systems Gemini family SoCs 313 314config ARCH_EBSA110 315 bool "EBSA-110" 316 select CPU_SA110 317 select ISA 318 select NO_IOPORT 319 select ARCH_USES_GETTIMEOFFSET 320 help 321 This is an evaluation board for the StrongARM processor available 322 from Digital. It has limited hardware on-board, including an 323 Ethernet interface, two PCMCIA sockets, two serial ports and a 324 parallel port. 325 326config ARCH_EP93XX 327 bool "EP93xx-based" 328 select CPU_ARM920T 329 select ARM_AMBA 330 select ARM_VIC 331 select COMMON_CLKDEV 332 select ARCH_REQUIRE_GPIOLIB 333 select ARCH_HAS_HOLES_MEMORYMODEL 334 select ARCH_USES_GETTIMEOFFSET 335 help 336 This enables support for the Cirrus EP93xx series of CPUs. 337 338config ARCH_FOOTBRIDGE 339 bool "FootBridge" 340 select CPU_SA110 341 select FOOTBRIDGE 342 select ARCH_USES_GETTIMEOFFSET 343 help 344 Support for systems based on the DC21285 companion chip 345 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. 346 347config ARCH_MXC 348 bool "Freescale MXC/iMX-based" 349 select GENERIC_CLOCKEVENTS 350 select ARCH_REQUIRE_GPIOLIB 351 select COMMON_CLKDEV 352 help 353 Support for Freescale MXC/iMX-based family of processors 354 355config ARCH_STMP3XXX 356 bool "Freescale STMP3xxx" 357 select CPU_ARM926T 358 select COMMON_CLKDEV 359 select ARCH_REQUIRE_GPIOLIB 360 select GENERIC_CLOCKEVENTS 361 select USB_ARCH_HAS_EHCI 362 help 363 Support for systems based on the Freescale 3xxx CPUs. 364 365config ARCH_NETX 366 bool "Hilscher NetX based" 367 select CPU_ARM926T 368 select ARM_VIC 369 select GENERIC_CLOCKEVENTS 370 help 371 This enables support for systems based on the Hilscher NetX Soc 372 373config ARCH_H720X 374 bool "Hynix HMS720x-based" 375 select CPU_ARM720T 376 select ISA_DMA_API 377 select ARCH_USES_GETTIMEOFFSET 378 help 379 This enables support for systems based on the Hynix HMS720x 380 381config ARCH_IOP13XX 382 bool "IOP13xx-based" 383 depends on MMU 384 select CPU_XSC3 385 select PLAT_IOP 386 select PCI 387 select ARCH_SUPPORTS_MSI 388 select VMSPLIT_1G 389 help 390 Support for Intel's IOP13XX (XScale) family of processors. 391 392config ARCH_IOP32X 393 bool "IOP32x-based" 394 depends on MMU 395 select CPU_XSCALE 396 select PLAT_IOP 397 select PCI 398 select ARCH_REQUIRE_GPIOLIB 399 help 400 Support for Intel's 80219 and IOP32X (XScale) family of 401 processors. 402 403config ARCH_IOP33X 404 bool "IOP33x-based" 405 depends on MMU 406 select CPU_XSCALE 407 select PLAT_IOP 408 select PCI 409 select ARCH_REQUIRE_GPIOLIB 410 help 411 Support for Intel's IOP33X (XScale) family of processors. 412 413config ARCH_IXP23XX 414 bool "IXP23XX-based" 415 depends on MMU 416 select CPU_XSC3 417 select PCI 418 select ARCH_USES_GETTIMEOFFSET 419 help 420 Support for Intel's IXP23xx (XScale) family of processors. 421 422config ARCH_IXP2000 423 bool "IXP2400/2800-based" 424 depends on MMU 425 select CPU_XSCALE 426 select PCI 427 select ARCH_USES_GETTIMEOFFSET 428 help 429 Support for Intel's IXP2400/2800 (XScale) family of processors. 430 431config ARCH_IXP4XX 432 bool "IXP4xx-based" 433 depends on MMU 434 select CPU_XSCALE 435 select GENERIC_GPIO 436 select GENERIC_CLOCKEVENTS 437 select DMABOUNCE if PCI 438 help 439 Support for Intel's IXP4XX (XScale) family of processors. 440 441config ARCH_DOVE 442 bool "Marvell Dove" 443 select PCI 444 select ARCH_REQUIRE_GPIOLIB 445 select GENERIC_CLOCKEVENTS 446 select PLAT_ORION 447 help 448 Support for the Marvell Dove SoC 88AP510 449 450config ARCH_KIRKWOOD 451 bool "Marvell Kirkwood" 452 select CPU_FEROCEON 453 select PCI 454 select ARCH_REQUIRE_GPIOLIB 455 select GENERIC_CLOCKEVENTS 456 select PLAT_ORION 457 help 458 Support for the following Marvell Kirkwood series SoCs: 459 88F6180, 88F6192 and 88F6281. 460 461config ARCH_LOKI 462 bool "Marvell Loki (88RC8480)" 463 select CPU_FEROCEON 464 select GENERIC_CLOCKEVENTS 465 select PLAT_ORION 466 help 467 Support for the Marvell Loki (88RC8480) SoC. 468 469config ARCH_LPC32XX 470 bool "NXP LPC32XX" 471 select CPU_ARM926T 472 select ARCH_REQUIRE_GPIOLIB 473 select HAVE_IDE 474 select ARM_AMBA 475 select USB_ARCH_HAS_OHCI 476 select COMMON_CLKDEV 477 select GENERIC_TIME 478 select GENERIC_CLOCKEVENTS 479 help 480 Support for the NXP LPC32XX family of processors 481 482config ARCH_MV78XX0 483 bool "Marvell MV78xx0" 484 select CPU_FEROCEON 485 select PCI 486 select ARCH_REQUIRE_GPIOLIB 487 select GENERIC_CLOCKEVENTS 488 select PLAT_ORION 489 help 490 Support for the following Marvell MV78xx0 series SoCs: 491 MV781x0, MV782x0. 492 493config ARCH_ORION5X 494 bool "Marvell Orion" 495 depends on MMU 496 select CPU_FEROCEON 497 select PCI 498 select ARCH_REQUIRE_GPIOLIB 499 select GENERIC_CLOCKEVENTS 500 select PLAT_ORION 501 help 502 Support for the following Marvell Orion 5x series SoCs: 503 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182), 504 Orion-2 (5281), Orion-1-90 (6183). 505 506config ARCH_MMP 507 bool "Marvell PXA168/910/MMP2" 508 depends on MMU 509 select ARCH_REQUIRE_GPIOLIB 510 select COMMON_CLKDEV 511 select GENERIC_CLOCKEVENTS 512 select TICK_ONESHOT 513 select PLAT_PXA 514 help 515 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line. 516 517config ARCH_KS8695 518 bool "Micrel/Kendin KS8695" 519 select CPU_ARM922T 520 select ARCH_REQUIRE_GPIOLIB 521 select ARCH_USES_GETTIMEOFFSET 522 help 523 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based 524 System-on-Chip devices. 525 526config ARCH_NS9XXX 527 bool "NetSilicon NS9xxx" 528 select CPU_ARM926T 529 select GENERIC_GPIO 530 select GENERIC_CLOCKEVENTS 531 select HAVE_CLK 532 help 533 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx 534 System. 535 536 <http://www.digi.com/products/microprocessors/index.jsp> 537 538config ARCH_W90X900 539 bool "Nuvoton W90X900 CPU" 540 select CPU_ARM926T 541 select ARCH_REQUIRE_GPIOLIB 542 select COMMON_CLKDEV 543 select GENERIC_CLOCKEVENTS 544 help 545 Support for Nuvoton (Winbond logic dept.) ARM9 processor, 546 At present, the w90x900 has been renamed nuc900, regarding 547 the ARM series product line, you can login the following 548 link address to know more. 549 550 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/ 551 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller> 552 553config ARCH_NUC93X 554 bool "Nuvoton NUC93X CPU" 555 select CPU_ARM926T 556 select COMMON_CLKDEV 557 help 558 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a 559 low-power and high performance MPEG-4/JPEG multimedia controller chip. 560 561config ARCH_TEGRA 562 bool "NVIDIA Tegra" 563 select GENERIC_TIME 564 select GENERIC_CLOCKEVENTS 565 select GENERIC_GPIO 566 select HAVE_CLK 567 select COMMON_CLKDEV 568 select ARCH_HAS_BARRIERS if CACHE_L2X0 569 help 570 This enables support for NVIDIA Tegra based systems (Tegra APX, 571 Tegra 6xx and Tegra 2 series). 572 573config ARCH_PNX4008 574 bool "Philips Nexperia PNX4008 Mobile" 575 select CPU_ARM926T 576 select COMMON_CLKDEV 577 select ARCH_USES_GETTIMEOFFSET 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 COMMON_CLKDEV 587 select ARCH_REQUIRE_GPIOLIB 588 select GENERIC_CLOCKEVENTS 589 select TICK_ONESHOT 590 select PLAT_PXA 591 help 592 Support for Intel/Marvell's PXA2xx/PXA3xx processor line. 593 594config ARCH_MSM 595 bool "Qualcomm MSM" 596 select HAVE_CLK 597 select GENERIC_CLOCKEVENTS 598 select ARCH_REQUIRE_GPIOLIB 599 help 600 Support for Qualcomm MSM/QSD based systems. This runs on the 601 apps processor of the MSM/QSD and depends on a shared memory 602 interface to the modem processor which runs the baseband 603 stack and controls some vital subsystems 604 (clock and power control, etc). 605 606config ARCH_SHMOBILE 607 bool "Renesas SH-Mobile" 608 help 609 Support for Renesas's SH-Mobile ARM platforms 610 611config ARCH_RPC 612 bool "RiscPC" 613 select ARCH_ACORN 614 select FIQ 615 select TIMER_ACORN 616 select ARCH_MAY_HAVE_PC_FDC 617 select HAVE_PATA_PLATFORM 618 select ISA_DMA_API 619 select NO_IOPORT 620 select ARCH_SPARSEMEM_ENABLE 621 select ARCH_USES_GETTIMEOFFSET 622 help 623 On the Acorn Risc-PC, Linux can support the internal IDE disk and 624 CD-ROM interface, serial and parallel port, and the floppy drive. 625 626config ARCH_SA1100 627 bool "SA1100-based" 628 select CPU_SA1100 629 select ISA 630 select ARCH_SPARSEMEM_ENABLE 631 select ARCH_MTD_XIP 632 select ARCH_HAS_CPUFREQ 633 select CPU_FREQ 634 select GENERIC_CLOCKEVENTS 635 select HAVE_CLK 636 select TICK_ONESHOT 637 select ARCH_REQUIRE_GPIOLIB 638 help 639 Support for StrongARM 11x0 based boards. 640 641config ARCH_S3C2410 642 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450" 643 select GENERIC_GPIO 644 select ARCH_HAS_CPUFREQ 645 select HAVE_CLK 646 select ARCH_USES_GETTIMEOFFSET 647 select HAVE_S3C2410_I2C 648 help 649 Samsung S3C2410X CPU based systems, such as the Simtec Electronics 650 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or 651 the Samsung SMDK2410 development board (and derivatives). 652 653 Note, the S3C2416 and the S3C2450 are so close that they even share 654 the same SoC ID code. This means that there is no seperate machine 655 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first. 656 657config ARCH_S3C64XX 658 bool "Samsung S3C64XX" 659 select PLAT_SAMSUNG 660 select CPU_V6 661 select ARM_VIC 662 select HAVE_CLK 663 select NO_IOPORT 664 select ARCH_USES_GETTIMEOFFSET 665 select ARCH_HAS_CPUFREQ 666 select ARCH_REQUIRE_GPIOLIB 667 select SAMSUNG_CLKSRC 668 select SAMSUNG_IRQ_VIC_TIMER 669 select SAMSUNG_IRQ_UART 670 select S3C_GPIO_TRACK 671 select S3C_GPIO_PULL_UPDOWN 672 select S3C_GPIO_CFG_S3C24XX 673 select S3C_GPIO_CFG_S3C64XX 674 select S3C_DEV_NAND 675 select USB_ARCH_HAS_OHCI 676 select SAMSUNG_GPIOLIB_4BIT 677 select HAVE_S3C2410_I2C 678 select HAVE_S3C2410_WATCHDOG 679 help 680 Samsung S3C64XX series based systems 681 682config ARCH_S5P6440 683 bool "Samsung S5P6440" 684 select CPU_V6 685 select GENERIC_GPIO 686 select HAVE_CLK 687 select HAVE_S3C2410_WATCHDOG 688 select ARCH_USES_GETTIMEOFFSET 689 select HAVE_S3C2410_I2C 690 select HAVE_S3C_RTC 691 help 692 Samsung S5P6440 CPU based systems 693 694config ARCH_S5P6442 695 bool "Samsung S5P6442" 696 select CPU_V6 697 select GENERIC_GPIO 698 select HAVE_CLK 699 select ARCH_USES_GETTIMEOFFSET 700 select HAVE_S3C2410_WATCHDOG 701 help 702 Samsung S5P6442 CPU based systems 703 704config ARCH_S5PC100 705 bool "Samsung S5PC100" 706 select GENERIC_GPIO 707 select HAVE_CLK 708 select CPU_V7 709 select ARM_L1_CACHE_SHIFT_6 710 select ARCH_USES_GETTIMEOFFSET 711 select HAVE_S3C2410_I2C 712 select HAVE_S3C_RTC 713 select HAVE_S3C2410_WATCHDOG 714 help 715 Samsung S5PC100 series based systems 716 717config ARCH_S5PV210 718 bool "Samsung S5PV210/S5PC110" 719 select CPU_V7 720 select GENERIC_GPIO 721 select HAVE_CLK 722 select ARM_L1_CACHE_SHIFT_6 723 select ARCH_USES_GETTIMEOFFSET 724 select HAVE_S3C2410_I2C 725 select HAVE_S3C_RTC 726 select HAVE_S3C2410_WATCHDOG 727 help 728 Samsung S5PV210/S5PC110 series based systems 729 730config ARCH_S5PV310 731 bool "Samsung S5PV310/S5PC210" 732 select CPU_V7 733 select GENERIC_GPIO 734 select HAVE_CLK 735 select GENERIC_CLOCKEVENTS 736 help 737 Samsung S5PV310 series based systems 738 739config ARCH_SHARK 740 bool "Shark" 741 select CPU_SA110 742 select ISA 743 select ISA_DMA 744 select ZONE_DMA 745 select PCI 746 select ARCH_USES_GETTIMEOFFSET 747 help 748 Support for the StrongARM based Digital DNARD machine, also known 749 as "Shark" (<http://www.shark-linux.de/shark.html>). 750 751config ARCH_LH7A40X 752 bool "Sharp LH7A40X" 753 select CPU_ARM922T 754 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM 755 select ARCH_USES_GETTIMEOFFSET 756 help 757 Say Y here for systems based on one of the Sharp LH7A40X 758 System on a Chip processors. These CPUs include an ARM922T 759 core with a wide array of integrated devices for 760 hand-held and low-power applications. 761 762config ARCH_U300 763 bool "ST-Ericsson U300 Series" 764 depends on MMU 765 select CPU_ARM926T 766 select HAVE_TCM 767 select ARM_AMBA 768 select ARM_VIC 769 select GENERIC_CLOCKEVENTS 770 select COMMON_CLKDEV 771 select GENERIC_GPIO 772 help 773 Support for ST-Ericsson U300 series mobile platforms. 774 775config ARCH_U8500 776 bool "ST-Ericsson U8500 Series" 777 select CPU_V7 778 select ARM_AMBA 779 select GENERIC_CLOCKEVENTS 780 select COMMON_CLKDEV 781 select ARCH_REQUIRE_GPIOLIB 782 help 783 Support for ST-Ericsson's Ux500 architecture 784 785config ARCH_NOMADIK 786 bool "STMicroelectronics Nomadik" 787 select ARM_AMBA 788 select ARM_VIC 789 select CPU_ARM926T 790 select COMMON_CLKDEV 791 select GENERIC_CLOCKEVENTS 792 select ARCH_REQUIRE_GPIOLIB 793 help 794 Support for the Nomadik platform by ST-Ericsson 795 796config ARCH_DAVINCI 797 bool "TI DaVinci" 798 select GENERIC_CLOCKEVENTS 799 select ARCH_REQUIRE_GPIOLIB 800 select ZONE_DMA 801 select HAVE_IDE 802 select COMMON_CLKDEV 803 select GENERIC_ALLOCATOR 804 select ARCH_HAS_HOLES_MEMORYMODEL 805 help 806 Support for TI's DaVinci platform. 807 808config ARCH_OMAP 809 bool "TI OMAP" 810 select HAVE_CLK 811 select ARCH_REQUIRE_GPIOLIB 812 select ARCH_HAS_CPUFREQ 813 select GENERIC_CLOCKEVENTS 814 select ARCH_HAS_HOLES_MEMORYMODEL 815 help 816 Support for TI's OMAP platform (OMAP1 and OMAP2). 817 818config PLAT_SPEAR 819 bool "ST SPEAr" 820 select ARM_AMBA 821 select ARCH_REQUIRE_GPIOLIB 822 select COMMON_CLKDEV 823 select GENERIC_CLOCKEVENTS 824 select HAVE_CLK 825 help 826 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx). 827 828endchoice 829 830# 831# This is sorted alphabetically by mach-* pathname. However, plat-* 832# Kconfigs may be included either alphabetically (according to the 833# plat- suffix) or along side the corresponding mach-* source. 834# 835source "arch/arm/mach-aaec2000/Kconfig" 836 837source "arch/arm/mach-at91/Kconfig" 838 839source "arch/arm/mach-bcmring/Kconfig" 840 841source "arch/arm/mach-clps711x/Kconfig" 842 843source "arch/arm/mach-cns3xxx/Kconfig" 844 845source "arch/arm/mach-davinci/Kconfig" 846 847source "arch/arm/mach-dove/Kconfig" 848 849source "arch/arm/mach-ep93xx/Kconfig" 850 851source "arch/arm/mach-footbridge/Kconfig" 852 853source "arch/arm/mach-gemini/Kconfig" 854 855source "arch/arm/mach-h720x/Kconfig" 856 857source "arch/arm/mach-integrator/Kconfig" 858 859source "arch/arm/mach-iop32x/Kconfig" 860 861source "arch/arm/mach-iop33x/Kconfig" 862 863source "arch/arm/mach-iop13xx/Kconfig" 864 865source "arch/arm/mach-ixp4xx/Kconfig" 866 867source "arch/arm/mach-ixp2000/Kconfig" 868 869source "arch/arm/mach-ixp23xx/Kconfig" 870 871source "arch/arm/mach-kirkwood/Kconfig" 872 873source "arch/arm/mach-ks8695/Kconfig" 874 875source "arch/arm/mach-lh7a40x/Kconfig" 876 877source "arch/arm/mach-loki/Kconfig" 878 879source "arch/arm/mach-lpc32xx/Kconfig" 880 881source "arch/arm/mach-msm/Kconfig" 882 883source "arch/arm/mach-mv78xx0/Kconfig" 884 885source "arch/arm/plat-mxc/Kconfig" 886 887source "arch/arm/mach-netx/Kconfig" 888 889source "arch/arm/mach-nomadik/Kconfig" 890source "arch/arm/plat-nomadik/Kconfig" 891 892source "arch/arm/mach-ns9xxx/Kconfig" 893 894source "arch/arm/mach-nuc93x/Kconfig" 895 896source "arch/arm/plat-omap/Kconfig" 897 898source "arch/arm/mach-omap1/Kconfig" 899 900source "arch/arm/mach-omap2/Kconfig" 901 902source "arch/arm/mach-orion5x/Kconfig" 903 904source "arch/arm/mach-pxa/Kconfig" 905source "arch/arm/plat-pxa/Kconfig" 906 907source "arch/arm/mach-mmp/Kconfig" 908 909source "arch/arm/mach-realview/Kconfig" 910 911source "arch/arm/mach-sa1100/Kconfig" 912 913source "arch/arm/plat-samsung/Kconfig" 914source "arch/arm/plat-s3c24xx/Kconfig" 915source "arch/arm/plat-s5p/Kconfig" 916 917source "arch/arm/plat-spear/Kconfig" 918 919if ARCH_S3C2410 920source "arch/arm/mach-s3c2400/Kconfig" 921source "arch/arm/mach-s3c2410/Kconfig" 922source "arch/arm/mach-s3c2412/Kconfig" 923source "arch/arm/mach-s3c2416/Kconfig" 924source "arch/arm/mach-s3c2440/Kconfig" 925source "arch/arm/mach-s3c2443/Kconfig" 926endif 927 928if ARCH_S3C64XX 929source "arch/arm/mach-s3c64xx/Kconfig" 930endif 931 932source "arch/arm/mach-s5p6440/Kconfig" 933 934source "arch/arm/mach-s5p6442/Kconfig" 935 936source "arch/arm/mach-s5pc100/Kconfig" 937 938source "arch/arm/mach-s5pv210/Kconfig" 939 940source "arch/arm/mach-s5pv310/Kconfig" 941 942source "arch/arm/mach-shmobile/Kconfig" 943 944source "arch/arm/plat-stmp3xxx/Kconfig" 945 946source "arch/arm/mach-tegra/Kconfig" 947 948source "arch/arm/mach-u300/Kconfig" 949 950source "arch/arm/mach-ux500/Kconfig" 951 952source "arch/arm/mach-versatile/Kconfig" 953 954source "arch/arm/mach-vexpress/Kconfig" 955 956source "arch/arm/mach-w90x900/Kconfig" 957 958# Definitions to make life easier 959config ARCH_ACORN 960 bool 961 962config PLAT_IOP 963 bool 964 select GENERIC_CLOCKEVENTS 965 966config PLAT_ORION 967 bool 968 969config PLAT_PXA 970 bool 971 972config PLAT_VERSATILE 973 bool 974 975config ARM_TIMER_SP804 976 bool 977 978source arch/arm/mm/Kconfig 979 980config IWMMXT 981 bool "Enable iWMMXt support" 982 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK 983 default y if PXA27x || PXA3xx || ARCH_MMP 984 help 985 Enable support for iWMMXt context switching at run time if 986 running on a CPU that supports it. 987 988# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER 989config XSCALE_PMU 990 bool 991 depends on CPU_XSCALE && !XSCALE_PMU_TIMER 992 default y 993 994config CPU_HAS_PMU 995 depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \ 996 (!ARCH_OMAP3 || OMAP3_EMU) 997 default y 998 bool 999 1000if !MMU 1001source "arch/arm/Kconfig-nommu" 1002endif 1003 1004config ARM_ERRATA_411920 1005 bool "ARM errata: Invalidation of the Instruction Cache operation can fail" 1006 depends on CPU_V6 && !SMP 1007 help 1008 Invalidation of the Instruction Cache operation can 1009 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176. 1010 It does not affect the MPCore. This option enables the ARM Ltd. 1011 recommended workaround. 1012 1013config ARM_ERRATA_430973 1014 bool "ARM errata: Stale prediction on replaced interworking branch" 1015 depends on CPU_V7 1016 help 1017 This option enables the workaround for the 430973 Cortex-A8 1018 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb 1019 interworking branch is replaced with another code sequence at the 1020 same virtual address, whether due to self-modifying code or virtual 1021 to physical address re-mapping, Cortex-A8 does not recover from the 1022 stale interworking branch prediction. This results in Cortex-A8 1023 executing the new code sequence in the incorrect ARM or Thumb state. 1024 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE 1025 and also flushes the branch target cache at every context switch. 1026 Note that setting specific bits in the ACTLR register may not be 1027 available in non-secure mode. 1028 1029config ARM_ERRATA_458693 1030 bool "ARM errata: Processor deadlock when a false hazard is created" 1031 depends on CPU_V7 1032 help 1033 This option enables the workaround for the 458693 Cortex-A8 (r2p0) 1034 erratum. For very specific sequences of memory operations, it is 1035 possible for a hazard condition intended for a cache line to instead 1036 be incorrectly associated with a different cache line. This false 1037 hazard might then cause a processor deadlock. The workaround enables 1038 the L1 caching of the NEON accesses and disables the PLD instruction 1039 in the ACTLR register. Note that setting specific bits in the ACTLR 1040 register may not be available in non-secure mode. 1041 1042config ARM_ERRATA_460075 1043 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data" 1044 depends on CPU_V7 1045 help 1046 This option enables the workaround for the 460075 Cortex-A8 (r2p0) 1047 erratum. Any asynchronous access to the L2 cache may encounter a 1048 situation in which recent store transactions to the L2 cache are lost 1049 and overwritten with stale memory contents from external memory. The 1050 workaround disables the write-allocate mode for the L2 cache via the 1051 ACTLR register. Note that setting specific bits in the ACTLR register 1052 may not be available in non-secure mode. 1053 1054config PL310_ERRATA_588369 1055 bool "Clean & Invalidate maintenance operations do not invalidate clean lines" 1056 depends on CACHE_L2X0 && ARCH_OMAP4 1057 help 1058 The PL310 L2 cache controller implements three types of Clean & 1059 Invalidate maintenance operations: by Physical Address 1060 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC). 1061 They are architecturally defined to behave as the execution of a 1062 clean operation followed immediately by an invalidate operation, 1063 both performing to the same memory location. This functionality 1064 is not correctly implemented in PL310 as clean lines are not 1065 invalidated as a result of these operations. Note that this errata 1066 uses Texas Instrument's secure monitor api. 1067 1068config ARM_ERRATA_720789 1069 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID" 1070 depends on CPU_V7 && SMP 1071 help 1072 This option enables the workaround for the 720789 Cortex-A9 (prior to 1073 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the 1074 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS. 1075 As a consequence of this erratum, some TLB entries which should be 1076 invalidated are not, resulting in an incoherency in the system page 1077 tables. The workaround changes the TLB flushing routines to invalidate 1078 entries regardless of the ASID. 1079endmenu 1080 1081source "arch/arm/common/Kconfig" 1082 1083menu "Bus support" 1084 1085config ARM_AMBA 1086 bool 1087 1088config ISA 1089 bool 1090 help 1091 Find out whether you have ISA slots on your motherboard. ISA is the 1092 name of a bus system, i.e. the way the CPU talks to the other stuff 1093 inside your box. Other bus systems are PCI, EISA, MicroChannel 1094 (MCA) or VESA. ISA is an older system, now being displaced by PCI; 1095 newer boards don't support it. If you have ISA, say Y, otherwise N. 1096 1097# Select ISA DMA controller support 1098config ISA_DMA 1099 bool 1100 select ISA_DMA_API 1101 1102# Select ISA DMA interface 1103config ISA_DMA_API 1104 bool 1105 1106config PCI 1107 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX 1108 help 1109 Find out whether you have a PCI motherboard. PCI is the name of a 1110 bus system, i.e. the way the CPU talks to the other stuff inside 1111 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 1112 VESA. If you have PCI, say Y, otherwise N. 1113 1114config PCI_DOMAINS 1115 bool 1116 depends on PCI 1117 1118config PCI_SYSCALL 1119 def_bool PCI 1120 1121# Select the host bridge type 1122config PCI_HOST_VIA82C505 1123 bool 1124 depends on PCI && ARCH_SHARK 1125 default y 1126 1127config PCI_HOST_ITE8152 1128 bool 1129 depends on PCI && MACH_ARMCORE 1130 default y 1131 select DMABOUNCE 1132 1133source "drivers/pci/Kconfig" 1134 1135source "drivers/pcmcia/Kconfig" 1136 1137endmenu 1138 1139menu "Kernel Features" 1140 1141source "kernel/time/Kconfig" 1142 1143config SMP 1144 bool "Symmetric Multi-Processing (EXPERIMENTAL)" 1145 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\ 1146 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\ 1147 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4) 1148 depends on GENERIC_CLOCKEVENTS 1149 select USE_GENERIC_SMP_HELPERS 1150 select HAVE_ARM_SCU if ARCH_REALVIEW || ARCH_OMAP4 || ARCH_S5PV310 ||\ 1151 ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 1152 help 1153 This enables support for systems with more than one CPU. If you have 1154 a system with only one CPU, like most personal computers, say N. If 1155 you have a system with more than one CPU, say Y. 1156 1157 If you say N here, the kernel will run on single and multiprocessor 1158 machines, but will use only one CPU of a multiprocessor machine. If 1159 you say Y here, the kernel will run on many, but not all, single 1160 processor machines. On a single processor machine, the kernel will 1161 run faster if you say N here. 1162 1163 See also <file:Documentation/i386/IO-APIC.txt>, 1164 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at 1165 <http://www.linuxdoc.org/docs.html#howto>. 1166 1167 If you don't know what to do here, say N. 1168 1169config HAVE_ARM_SCU 1170 bool 1171 depends on SMP 1172 help 1173 This option enables support for the ARM system coherency unit 1174 1175config HAVE_ARM_TWD 1176 bool 1177 depends on SMP 1178 help 1179 This options enables support for the ARM timer and watchdog unit 1180 1181choice 1182 prompt "Memory split" 1183 default VMSPLIT_3G 1184 help 1185 Select the desired split between kernel and user memory. 1186 1187 If you are not absolutely sure what you are doing, leave this 1188 option alone! 1189 1190 config VMSPLIT_3G 1191 bool "3G/1G user/kernel split" 1192 config VMSPLIT_2G 1193 bool "2G/2G user/kernel split" 1194 config VMSPLIT_1G 1195 bool "1G/3G user/kernel split" 1196endchoice 1197 1198config PAGE_OFFSET 1199 hex 1200 default 0x40000000 if VMSPLIT_1G 1201 default 0x80000000 if VMSPLIT_2G 1202 default 0xC0000000 1203 1204config NR_CPUS 1205 int "Maximum number of CPUs (2-32)" 1206 range 2 32 1207 depends on SMP 1208 default "4" 1209 1210config HOTPLUG_CPU 1211 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 1212 depends on SMP && HOTPLUG && EXPERIMENTAL 1213 help 1214 Say Y here to experiment with turning CPUs off and on. CPUs 1215 can be controlled through /sys/devices/system/cpu. 1216 1217config LOCAL_TIMERS 1218 bool "Use local timer interrupts" 1219 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \ 1220 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \ 1221 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4) 1222 default y 1223 select HAVE_ARM_TWD if ARCH_REALVIEW || ARCH_OMAP4 || ARCH_S5PV310 || \ 1224 ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS 1225 help 1226 Enable support for local timers on SMP platforms, rather then the 1227 legacy IPI broadcast method. Local timers allows the system 1228 accounting to be spread across the timer interval, preventing a 1229 "thundering herd" at every timer tick. 1230 1231source kernel/Kconfig.preempt 1232 1233config HZ 1234 int 1235 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || \ 1236 ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310 1237 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER 1238 default AT91_TIMER_HZ if ARCH_AT91 1239 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE 1240 default 100 1241 1242config THUMB2_KERNEL 1243 bool "Compile the kernel in Thumb-2 mode" 1244 depends on CPU_V7 && EXPERIMENTAL 1245 select AEABI 1246 select ARM_ASM_UNIFIED 1247 help 1248 By enabling this option, the kernel will be compiled in 1249 Thumb-2 mode. A compiler/assembler that understand the unified 1250 ARM-Thumb syntax is needed. 1251 1252 If unsure, say N. 1253 1254config ARM_ASM_UNIFIED 1255 bool 1256 1257config AEABI 1258 bool "Use the ARM EABI to compile the kernel" 1259 help 1260 This option allows for the kernel to be compiled using the latest 1261 ARM ABI (aka EABI). This is only useful if you are using a user 1262 space environment that is also compiled with EABI. 1263 1264 Since there are major incompatibilities between the legacy ABI and 1265 EABI, especially with regard to structure member alignment, this 1266 option also changes the kernel syscall calling convention to 1267 disambiguate both ABIs and allow for backward compatibility support 1268 (selected with CONFIG_OABI_COMPAT). 1269 1270 To use this you need GCC version 4.0.0 or later. 1271 1272config OABI_COMPAT 1273 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" 1274 depends on AEABI && EXPERIMENTAL 1275 default y 1276 help 1277 This option preserves the old syscall interface along with the 1278 new (ARM EABI) one. It also provides a compatibility layer to 1279 intercept syscalls that have structure arguments which layout 1280 in memory differs between the legacy ABI and the new ARM EABI 1281 (only for non "thumb" binaries). This option adds a tiny 1282 overhead to all syscalls and produces a slightly larger kernel. 1283 If you know you'll be using only pure EABI user space then you 1284 can say N here. If this option is not selected and you attempt 1285 to execute a legacy ABI binary then the result will be 1286 UNPREDICTABLE (in fact it can be predicted that it won't work 1287 at all). If in doubt say Y. 1288 1289config ARCH_HAS_HOLES_MEMORYMODEL 1290 bool 1291 1292config ARCH_SPARSEMEM_ENABLE 1293 bool 1294 1295config ARCH_SPARSEMEM_DEFAULT 1296 def_bool ARCH_SPARSEMEM_ENABLE 1297 1298config ARCH_SELECT_MEMORY_MODEL 1299 def_bool ARCH_SPARSEMEM_ENABLE 1300 1301config HIGHMEM 1302 bool "High Memory Support (EXPERIMENTAL)" 1303 depends on MMU && EXPERIMENTAL 1304 help 1305 The address space of ARM processors is only 4 Gigabytes large 1306 and it has to accommodate user address space, kernel address 1307 space as well as some memory mapped IO. That means that, if you 1308 have a large amount of physical memory and/or IO, not all of the 1309 memory can be "permanently mapped" by the kernel. The physical 1310 memory that is not permanently mapped is called "high memory". 1311 1312 Depending on the selected kernel/user memory split, minimum 1313 vmalloc space and actual amount of RAM, you may not need this 1314 option which should result in a slightly faster kernel. 1315 1316 If unsure, say n. 1317 1318config HIGHPTE 1319 bool "Allocate 2nd-level pagetables from highmem" 1320 depends on HIGHMEM 1321 depends on !OUTER_CACHE 1322 1323config HW_PERF_EVENTS 1324 bool "Enable hardware performance counter support for perf events" 1325 depends on PERF_EVENTS && CPU_HAS_PMU 1326 default y 1327 help 1328 Enable hardware performance counter support for perf events. If 1329 disabled, perf events will use software events only. 1330 1331config SPARSE_IRQ 1332 def_bool n 1333 help 1334 This enables support for sparse irqs. This is useful in general 1335 as most CPUs have a fairly sparse array of IRQ vectors, which 1336 the irq_desc then maps directly on to. Systems with a high 1337 number of off-chip IRQs will want to treat this as 1338 experimental until they have been independently verified. 1339 1340source "mm/Kconfig" 1341 1342config FORCE_MAX_ZONEORDER 1343 int "Maximum zone order" if ARCH_SHMOBILE 1344 range 11 64 if ARCH_SHMOBILE 1345 default "9" if SA1111 1346 default "11" 1347 help 1348 The kernel memory allocator divides physically contiguous memory 1349 blocks into "zones", where each zone is a power of two number of 1350 pages. This option selects the largest power of two that the kernel 1351 keeps in the memory allocator. If you need to allocate very large 1352 blocks of physically contiguous memory, then you may need to 1353 increase this value. 1354 1355 This config option is actually maximum order plus one. For example, 1356 a value of 11 means that the largest free memory block is 2^10 pages. 1357 1358config LEDS 1359 bool "Timer and CPU usage LEDs" 1360 depends on ARCH_CDB89712 || ARCH_EBSA110 || \ 1361 ARCH_EBSA285 || ARCH_INTEGRATOR || \ 1362 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ 1363 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ 1364 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ 1365 ARCH_AT91 || ARCH_DAVINCI || \ 1366 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW 1367 help 1368 If you say Y here, the LEDs on your machine will be used 1369 to provide useful information about your current system status. 1370 1371 If you are compiling a kernel for a NetWinder or EBSA-285, you will 1372 be able to select which LEDs are active using the options below. If 1373 you are compiling a kernel for the EBSA-110 or the LART however, the 1374 red LED will simply flash regularly to indicate that the system is 1375 still functional. It is safe to say Y here if you have a CATS 1376 system, but the driver will do nothing. 1377 1378config LEDS_TIMER 1379 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ 1380 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1381 || MACH_OMAP_PERSEUS2 1382 depends on LEDS 1383 depends on !GENERIC_CLOCKEVENTS 1384 default y if ARCH_EBSA110 1385 help 1386 If you say Y here, one of the system LEDs (the green one on the 1387 NetWinder, the amber one on the EBSA285, or the red one on the LART) 1388 will flash regularly to indicate that the system is still 1389 operational. This is mainly useful to kernel hackers who are 1390 debugging unstable kernels. 1391 1392 The LART uses the same LED for both Timer LED and CPU usage LED 1393 functions. You may choose to use both, but the Timer LED function 1394 will overrule the CPU usage LED. 1395 1396config LEDS_CPU 1397 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ 1398 !ARCH_OMAP) \ 1399 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1400 || MACH_OMAP_PERSEUS2 1401 depends on LEDS 1402 help 1403 If you say Y here, the red LED will be used to give a good real 1404 time indication of CPU usage, by lighting whenever the idle task 1405 is not currently executing. 1406 1407 The LART uses the same LED for both Timer LED and CPU usage LED 1408 functions. You may choose to use both, but the Timer LED function 1409 will overrule the CPU usage LED. 1410 1411config ALIGNMENT_TRAP 1412 bool 1413 depends on CPU_CP15_MMU 1414 default y if !ARCH_EBSA110 1415 select HAVE_PROC_CPU if PROC_FS 1416 help 1417 ARM processors cannot fetch/store information which is not 1418 naturally aligned on the bus, i.e., a 4 byte fetch must start at an 1419 address divisible by 4. On 32-bit ARM processors, these non-aligned 1420 fetch/store instructions will be emulated in software if you say 1421 here, which has a severe performance impact. This is necessary for 1422 correct operation of some network protocols. With an IP-only 1423 configuration it is safe to say N, otherwise say Y. 1424 1425config UACCESS_WITH_MEMCPY 1426 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)" 1427 depends on MMU && EXPERIMENTAL 1428 default y if CPU_FEROCEON 1429 help 1430 Implement faster copy_to_user and clear_user methods for CPU 1431 cores where a 8-word STM instruction give significantly higher 1432 memory write throughput than a sequence of individual 32bit stores. 1433 1434 A possible side effect is a slight increase in scheduling latency 1435 between threads sharing the same address space if they invoke 1436 such copy operations with large buffers. 1437 1438 However, if the CPU data cache is using a write-allocate mode, 1439 this option is unlikely to provide any performance gain. 1440 1441config CC_STACKPROTECTOR 1442 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)" 1443 help 1444 This option turns on the -fstack-protector GCC feature. This 1445 feature puts, at the beginning of functions, a canary value on 1446 the stack just before the return address, and validates 1447 the value just before actually returning. Stack based buffer 1448 overflows (that need to overwrite this return address) now also 1449 overwrite the canary, which gets detected and the attack is then 1450 neutralized via a kernel panic. 1451 This feature requires gcc version 4.2 or above. 1452 1453config DEPRECATED_PARAM_STRUCT 1454 bool "Provide old way to pass kernel parameters" 1455 help 1456 This was deprecated in 2001 and announced to live on for 5 years. 1457 Some old boot loaders still use this way. 1458 1459endmenu 1460 1461menu "Boot options" 1462 1463# Compressed boot loader in ROM. Yes, we really want to ask about 1464# TEXT and BSS so we preserve their values in the config files. 1465config ZBOOT_ROM_TEXT 1466 hex "Compressed ROM boot loader base address" 1467 default "0" 1468 help 1469 The physical address at which the ROM-able zImage is to be 1470 placed in the target. Platforms which normally make use of 1471 ROM-able zImage formats normally set this to a suitable 1472 value in their defconfig file. 1473 1474 If ZBOOT_ROM is not enabled, this has no effect. 1475 1476config ZBOOT_ROM_BSS 1477 hex "Compressed ROM boot loader BSS address" 1478 default "0" 1479 help 1480 The base address of an area of read/write memory in the target 1481 for the ROM-able zImage which must be available while the 1482 decompressor is running. It must be large enough to hold the 1483 entire decompressed kernel plus an additional 128 KiB. 1484 Platforms which normally make use of ROM-able zImage formats 1485 normally set this to a suitable value in their defconfig file. 1486 1487 If ZBOOT_ROM is not enabled, this has no effect. 1488 1489config ZBOOT_ROM 1490 bool "Compressed boot loader in ROM/flash" 1491 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS 1492 help 1493 Say Y here if you intend to execute your compressed kernel image 1494 (zImage) directly from ROM or flash. If unsure, say N. 1495 1496config CMDLINE 1497 string "Default kernel command string" 1498 default "" 1499 help 1500 On some architectures (EBSA110 and CATS), there is currently no way 1501 for the boot loader to pass arguments to the kernel. For these 1502 architectures, you should supply some command-line options at build 1503 time by entering them here. As a minimum, you should specify the 1504 memory size and the root device (e.g., mem=64M root=/dev/nfs). 1505 1506config CMDLINE_FORCE 1507 bool "Always use the default kernel command string" 1508 depends on CMDLINE != "" 1509 help 1510 Always use the default kernel command string, even if the boot 1511 loader passes other arguments to the kernel. 1512 This is useful if you cannot or don't want to change the 1513 command-line options your boot loader passes to the kernel. 1514 1515 If unsure, say N. 1516 1517config XIP_KERNEL 1518 bool "Kernel Execute-In-Place from ROM" 1519 depends on !ZBOOT_ROM 1520 help 1521 Execute-In-Place allows the kernel to run from non-volatile storage 1522 directly addressable by the CPU, such as NOR flash. This saves RAM 1523 space since the text section of the kernel is not loaded from flash 1524 to RAM. Read-write sections, such as the data section and stack, 1525 are still copied to RAM. The XIP kernel is not compressed since 1526 it has to run directly from flash, so it will take more space to 1527 store it. The flash address used to link the kernel object files, 1528 and for storing it, is configuration dependent. Therefore, if you 1529 say Y here, you must know the proper physical address where to 1530 store the kernel image depending on your own flash memory usage. 1531 1532 Also note that the make target becomes "make xipImage" rather than 1533 "make zImage" or "make Image". The final kernel binary to put in 1534 ROM memory will be arch/arm/boot/xipImage. 1535 1536 If unsure, say N. 1537 1538config XIP_PHYS_ADDR 1539 hex "XIP Kernel Physical Location" 1540 depends on XIP_KERNEL 1541 default "0x00080000" 1542 help 1543 This is the physical address in your flash memory the kernel will 1544 be linked for and stored to. This address is dependent on your 1545 own flash usage. 1546 1547config KEXEC 1548 bool "Kexec system call (EXPERIMENTAL)" 1549 depends on EXPERIMENTAL 1550 help 1551 kexec is a system call that implements the ability to shutdown your 1552 current kernel, and to start another kernel. It is like a reboot 1553 but it is independent of the system firmware. And like a reboot 1554 you can start any kernel with it, not just Linux. 1555 1556 It is an ongoing process to be certain the hardware in a machine 1557 is properly shutdown, so do not be surprised if this code does not 1558 initially work for you. It may help to enable device hotplugging 1559 support. 1560 1561config ATAGS_PROC 1562 bool "Export atags in procfs" 1563 depends on KEXEC 1564 default y 1565 help 1566 Should the atags used to boot the kernel be exported in an "atags" 1567 file in procfs. Useful with kexec. 1568 1569config AUTO_ZRELADDR 1570 bool "Auto calculation of the decompressed kernel image address" 1571 depends on !ZBOOT_ROM && !ARCH_U300 1572 help 1573 ZRELADDR is the physical address where the decompressed kernel 1574 image will be placed. If AUTO_ZRELADDR is selected, the address 1575 will be determined at run-time by masking the current IP with 1576 0xf8000000. This assumes the zImage being placed in the first 128MB 1577 from start of memory. 1578 1579config ZRELADDR 1580 hex "Physical address of the decompressed kernel image" 1581 depends on !AUTO_ZRELADDR 1582 default 0x00008000 if ARCH_BCMRING ||\ 1583 ARCH_CNS3XXX ||\ 1584 ARCH_DOVE ||\ 1585 ARCH_EBSA110 ||\ 1586 ARCH_FOOTBRIDGE ||\ 1587 ARCH_INTEGRATOR ||\ 1588 ARCH_IOP13XX ||\ 1589 ARCH_IOP33X ||\ 1590 ARCH_IXP2000 ||\ 1591 ARCH_IXP23XX ||\ 1592 ARCH_IXP4XX ||\ 1593 ARCH_KIRKWOOD ||\ 1594 ARCH_KS8695 ||\ 1595 ARCH_LOKI ||\ 1596 ARCH_MMP ||\ 1597 ARCH_MV78XX0 ||\ 1598 ARCH_NOMADIK ||\ 1599 ARCH_NUC93X ||\ 1600 ARCH_NS9XXX ||\ 1601 ARCH_ORION5X ||\ 1602 ARCH_SPEAR3XX ||\ 1603 ARCH_SPEAR6XX ||\ 1604 ARCH_TEGRA ||\ 1605 ARCH_U8500 ||\ 1606 ARCH_VERSATILE ||\ 1607 ARCH_W90X900 1608 default 0x08008000 if ARCH_MX1 ||\ 1609 ARCH_SHARK 1610 default 0x10008000 if ARCH_MSM ||\ 1611 ARCH_OMAP1 ||\ 1612 ARCH_RPC 1613 default 0x20008000 if ARCH_S5P6440 ||\ 1614 ARCH_S5P6442 ||\ 1615 ARCH_S5PC100 ||\ 1616 ARCH_S5PV210 1617 default 0x30008000 if ARCH_S3C2410 ||\ 1618 ARCH_S3C2400 ||\ 1619 ARCH_S3C2412 ||\ 1620 ARCH_S3C2416 ||\ 1621 ARCH_S3C2440 ||\ 1622 ARCH_S3C2443 1623 default 0x40008000 if ARCH_STMP378X ||\ 1624 ARCH_STMP37XX ||\ 1625 ARCH_SH7372 ||\ 1626 ARCH_SH7377 ||\ 1627 ARCH_S5PV310 1628 default 0x50008000 if ARCH_S3C64XX ||\ 1629 ARCH_SH7367 1630 default 0x60008000 if ARCH_VEXPRESS 1631 default 0x80008000 if ARCH_MX25 ||\ 1632 ARCH_MX3 ||\ 1633 ARCH_NETX ||\ 1634 ARCH_OMAP2PLUS ||\ 1635 ARCH_PNX4008 1636 default 0x90008000 if ARCH_MX5 ||\ 1637 ARCH_MX91231 1638 default 0xa0008000 if ARCH_IOP32X ||\ 1639 ARCH_PXA ||\ 1640 MACH_MX27 1641 default 0xc0008000 if ARCH_LH7A40X ||\ 1642 MACH_MX21 1643 default 0xf0008000 if ARCH_AAEC2000 ||\ 1644 ARCH_L7200 1645 default 0xc0028000 if ARCH_CLPS711X 1646 default 0x70008000 if ARCH_AT91 && (ARCH_AT91CAP9 || ARCH_AT91SAM9G45) 1647 default 0x20008000 if ARCH_AT91 && !(ARCH_AT91CAP9 || ARCH_AT91SAM9G45) 1648 default 0xc0008000 if ARCH_DAVINCI && ARCH_DAVINCI_DA8XX 1649 default 0x80008000 if ARCH_DAVINCI && !ARCH_DAVINCI_DA8XX 1650 default 0x00008000 if ARCH_EP93XX && EP93XX_SDCE3_SYNC_PHYS_OFFSET 1651 default 0xc0008000 if ARCH_EP93XX && EP93XX_SDCE0_PHYS_OFFSET 1652 default 0xd0008000 if ARCH_EP93XX && EP93XX_SDCE1_PHYS_OFFSET 1653 default 0xe0008000 if ARCH_EP93XX && EP93XX_SDCE2_PHYS_OFFSET 1654 default 0xf0008000 if ARCH_EP93XX && EP93XX_SDCE3_ASYNC_PHYS_OFFSET 1655 default 0x00008000 if ARCH_GEMINI && GEMINI_MEM_SWAP 1656 default 0x10008000 if ARCH_GEMINI && !GEMINI_MEM_SWAP 1657 default 0x70008000 if ARCH_REALVIEW && REALVIEW_HIGH_PHYS_OFFSET 1658 default 0x00008000 if ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET 1659 default 0xc0208000 if ARCH_SA1100 && SA1111 1660 default 0xc0008000 if ARCH_SA1100 && !SA1111 1661 default 0x30108000 if ARCH_S3C2410 && PM_H1940 1662 default 0x28E08000 if ARCH_U300 && MACH_U300_SINGLE_RAM 1663 default 0x48008000 if ARCH_U300 && !MACH_U300_SINGLE_RAM 1664 help 1665 ZRELADDR is the physical address where the decompressed kernel 1666 image will be placed. ZRELADDR has to be specified when the 1667 assumption of AUTO_ZRELADDR is not valid, or when ZBOOT_ROM is 1668 selected. 1669 1670endmenu 1671 1672menu "CPU Power Management" 1673 1674if ARCH_HAS_CPUFREQ 1675 1676source "drivers/cpufreq/Kconfig" 1677 1678config CPU_FREQ_SA1100 1679 bool 1680 1681config CPU_FREQ_SA1110 1682 bool 1683 1684config CPU_FREQ_INTEGRATOR 1685 tristate "CPUfreq driver for ARM Integrator CPUs" 1686 depends on ARCH_INTEGRATOR && CPU_FREQ 1687 default y 1688 help 1689 This enables the CPUfreq driver for ARM Integrator CPUs. 1690 1691 For details, take a look at <file:Documentation/cpu-freq>. 1692 1693 If in doubt, say Y. 1694 1695config CPU_FREQ_PXA 1696 bool 1697 depends on CPU_FREQ && ARCH_PXA && PXA25x 1698 default y 1699 select CPU_FREQ_DEFAULT_GOV_USERSPACE 1700 1701config CPU_FREQ_S3C64XX 1702 bool "CPUfreq support for Samsung S3C64XX CPUs" 1703 depends on CPU_FREQ && CPU_S3C6410 1704 1705config CPU_FREQ_S3C 1706 bool 1707 help 1708 Internal configuration node for common cpufreq on Samsung SoC 1709 1710config CPU_FREQ_S3C24XX 1711 bool "CPUfreq driver for Samsung S3C24XX series CPUs" 1712 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL 1713 select CPU_FREQ_S3C 1714 help 1715 This enables the CPUfreq driver for the Samsung S3C24XX family 1716 of CPUs. 1717 1718 For details, take a look at <file:Documentation/cpu-freq>. 1719 1720 If in doubt, say N. 1721 1722config CPU_FREQ_S3C24XX_PLL 1723 bool "Support CPUfreq changing of PLL frequency" 1724 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL 1725 help 1726 Compile in support for changing the PLL frequency from the 1727 S3C24XX series CPUfreq driver. The PLL takes time to settle 1728 after a frequency change, so by default it is not enabled. 1729 1730 This also means that the PLL tables for the selected CPU(s) will 1731 be built which may increase the size of the kernel image. 1732 1733config CPU_FREQ_S3C24XX_DEBUG 1734 bool "Debug CPUfreq Samsung driver core" 1735 depends on CPU_FREQ_S3C24XX 1736 help 1737 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core 1738 1739config CPU_FREQ_S3C24XX_IODEBUG 1740 bool "Debug CPUfreq Samsung driver IO timing" 1741 depends on CPU_FREQ_S3C24XX 1742 help 1743 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core 1744 1745config CPU_FREQ_S3C24XX_DEBUGFS 1746 bool "Export debugfs for CPUFreq" 1747 depends on CPU_FREQ_S3C24XX && DEBUG_FS 1748 help 1749 Export status information via debugfs. 1750 1751endif 1752 1753source "drivers/cpuidle/Kconfig" 1754 1755endmenu 1756 1757menu "Floating point emulation" 1758 1759comment "At least one emulation must be selected" 1760 1761config FPE_NWFPE 1762 bool "NWFPE math emulation" 1763 depends on !AEABI || OABI_COMPAT 1764 ---help--- 1765 Say Y to include the NWFPE floating point emulator in the kernel. 1766 This is necessary to run most binaries. Linux does not currently 1767 support floating point hardware so you need to say Y here even if 1768 your machine has an FPA or floating point co-processor podule. 1769 1770 You may say N here if you are going to load the Acorn FPEmulator 1771 early in the bootup. 1772 1773config FPE_NWFPE_XP 1774 bool "Support extended precision" 1775 depends on FPE_NWFPE 1776 help 1777 Say Y to include 80-bit support in the kernel floating-point 1778 emulator. Otherwise, only 32 and 64-bit support is compiled in. 1779 Note that gcc does not generate 80-bit operations by default, 1780 so in most cases this option only enlarges the size of the 1781 floating point emulator without any good reason. 1782 1783 You almost surely want to say N here. 1784 1785config FPE_FASTFPE 1786 bool "FastFPE math emulation (EXPERIMENTAL)" 1787 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL 1788 ---help--- 1789 Say Y here to include the FAST floating point emulator in the kernel. 1790 This is an experimental much faster emulator which now also has full 1791 precision for the mantissa. It does not support any exceptions. 1792 It is very simple, and approximately 3-6 times faster than NWFPE. 1793 1794 It should be sufficient for most programs. It may be not suitable 1795 for scientific calculations, but you have to check this for yourself. 1796 If you do not feel you need a faster FP emulation you should better 1797 choose NWFPE. 1798 1799config VFP 1800 bool "VFP-format floating point maths" 1801 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON 1802 help 1803 Say Y to include VFP support code in the kernel. This is needed 1804 if your hardware includes a VFP unit. 1805 1806 Please see <file:Documentation/arm/VFP/release-notes.txt> for 1807 release notes and additional status information. 1808 1809 Say N if your target does not have VFP hardware. 1810 1811config VFPv3 1812 bool 1813 depends on VFP 1814 default y if CPU_V7 1815 1816config NEON 1817 bool "Advanced SIMD (NEON) Extension support" 1818 depends on VFPv3 && CPU_V7 1819 help 1820 Say Y to include support code for NEON, the ARMv7 Advanced SIMD 1821 Extension. 1822 1823endmenu 1824 1825menu "Userspace binary formats" 1826 1827source "fs/Kconfig.binfmt" 1828 1829config ARTHUR 1830 tristate "RISC OS personality" 1831 depends on !AEABI 1832 help 1833 Say Y here to include the kernel code necessary if you want to run 1834 Acorn RISC OS/Arthur binaries under Linux. This code is still very 1835 experimental; if this sounds frightening, say N and sleep in peace. 1836 You can also say M here to compile this support as a module (which 1837 will be called arthur). 1838 1839endmenu 1840 1841menu "Power management options" 1842 1843source "kernel/power/Kconfig" 1844 1845config ARCH_SUSPEND_POSSIBLE 1846 def_bool y 1847 1848endmenu 1849 1850source "net/Kconfig" 1851 1852source "drivers/Kconfig" 1853 1854source "fs/Kconfig" 1855 1856source "arch/arm/Kconfig.debug" 1857 1858source "security/Kconfig" 1859 1860source "crypto/Kconfig" 1861 1862source "lib/Kconfig" 1863