1# 2# For a description of the syntax of this configuration file, 3# see Documentation/kbuild/kconfig-language.txt. 4# 5 6mainmenu "Linux/SuperH Kernel Configuration" 7 8config SUPERH 9 def_bool y 10 select EMBEDDED 11 select HAVE_CLK 12 select HAVE_IDE 13 select HAVE_OPROFILE 14 help 15 The SuperH is a RISC processor targeted for use in embedded systems 16 and consumer electronics; it was also used in the Sega Dreamcast 17 gaming console. The SuperH port has a home page at 18 <http://www.linux-sh.org/>. 19 20config SUPERH32 21 def_bool !SUPERH64 22 23config SUPERH64 24 def_bool y if CPU_SH5 25 26config RWSEM_GENERIC_SPINLOCK 27 def_bool y 28 29config RWSEM_XCHGADD_ALGORITHM 30 bool 31 32config GENERIC_BUG 33 def_bool y 34 depends on BUG && SUPERH32 35 36config GENERIC_FIND_NEXT_BIT 37 def_bool y 38 39config GENERIC_HWEIGHT 40 def_bool y 41 42config GENERIC_HARDIRQS 43 def_bool y 44 45config GENERIC_IRQ_PROBE 46 def_bool y 47 48config GENERIC_CALIBRATE_DELAY 49 def_bool y 50 51config GENERIC_IOMAP 52 bool 53 54config GENERIC_TIME 55 def_bool n 56 57config GENERIC_CLOCKEVENTS 58 def_bool n 59 60config SYS_SUPPORTS_PM 61 bool 62 63config SYS_SUPPORTS_APM_EMULATION 64 bool 65 select SYS_SUPPORTS_PM 66 67config SYS_SUPPORTS_SMP 68 bool 69 70config SYS_SUPPORTS_NUMA 71 bool 72 73config SYS_SUPPORTS_PCI 74 bool 75 76config STACKTRACE_SUPPORT 77 def_bool y 78 79config LOCKDEP_SUPPORT 80 def_bool y 81 82config ARCH_HAS_ILOG2_U32 83 def_bool n 84 85config ARCH_HAS_ILOG2_U64 86 def_bool n 87 88config ARCH_NO_VIRT_TO_BUS 89 def_bool y 90 91config ARCH_SUPPORTS_AOUT 92 def_bool y 93 94config IO_TRAPPED 95 bool 96 97source "init/Kconfig" 98 99menu "System type" 100 101# 102# Processor families 103# 104config CPU_SH2 105 bool 106 107config CPU_SH2A 108 bool 109 select CPU_SH2 110 111config CPU_SH3 112 bool 113 select CPU_HAS_INTEVT 114 select CPU_HAS_SR_RB 115 116config CPU_SH4 117 bool 118 select CPU_HAS_INTEVT 119 select CPU_HAS_SR_RB 120 select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2 121 select CPU_HAS_FPU if !CPU_SH4AL_DSP 122 123config CPU_SH4A 124 bool 125 select CPU_SH4 126 127config CPU_SH4AL_DSP 128 bool 129 select CPU_SH4A 130 select CPU_HAS_DSP 131 132config CPU_SH5 133 bool 134 select CPU_HAS_FPU 135 136config CPU_SHX2 137 bool 138 139config CPU_SHX3 140 bool 141 142choice 143 prompt "Processor sub-type selection" 144 145# 146# Processor subtypes 147# 148 149# SH-2 Processor Support 150 151config CPU_SUBTYPE_SH7619 152 bool "Support SH7619 processor" 153 select CPU_SH2 154 155# SH-2A Processor Support 156 157config CPU_SUBTYPE_SH7203 158 bool "Support SH7203 processor" 159 select CPU_SH2A 160 select CPU_HAS_FPU 161 162config CPU_SUBTYPE_SH7206 163 bool "Support SH7206 processor" 164 select CPU_SH2A 165 166config CPU_SUBTYPE_SH7263 167 bool "Support SH7263 processor" 168 select CPU_SH2A 169 select CPU_HAS_FPU 170 171config CPU_SUBTYPE_MXG 172 bool "Support MX-G processor" 173 select CPU_SH2A 174 help 175 Select MX-G if running on an R8A03022BG part. 176 177# SH-3 Processor Support 178 179config CPU_SUBTYPE_SH7705 180 bool "Support SH7705 processor" 181 select CPU_SH3 182 183config CPU_SUBTYPE_SH7706 184 bool "Support SH7706 processor" 185 select CPU_SH3 186 help 187 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU. 188 189config CPU_SUBTYPE_SH7707 190 bool "Support SH7707 processor" 191 select CPU_SH3 192 help 193 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU. 194 195config CPU_SUBTYPE_SH7708 196 bool "Support SH7708 processor" 197 select CPU_SH3 198 help 199 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or 200 if you have a 100 Mhz SH-3 HD6417708R CPU. 201 202config CPU_SUBTYPE_SH7709 203 bool "Support SH7709 processor" 204 select CPU_SH3 205 help 206 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU. 207 208config CPU_SUBTYPE_SH7710 209 bool "Support SH7710 processor" 210 select CPU_SH3 211 select CPU_HAS_DSP 212 help 213 Select SH7710 if you have a SH3-DSP SH7710 CPU. 214 215config CPU_SUBTYPE_SH7712 216 bool "Support SH7712 processor" 217 select CPU_SH3 218 select CPU_HAS_DSP 219 help 220 Select SH7712 if you have a SH3-DSP SH7712 CPU. 221 222config CPU_SUBTYPE_SH7720 223 bool "Support SH7720 processor" 224 select CPU_SH3 225 select CPU_HAS_DSP 226 help 227 Select SH7720 if you have a SH3-DSP SH7720 CPU. 228 229config CPU_SUBTYPE_SH7721 230 bool "Support SH7721 processor" 231 select CPU_SH3 232 select CPU_HAS_DSP 233 help 234 Select SH7721 if you have a SH3-DSP SH7721 CPU. 235 236# SH-4 Processor Support 237 238config CPU_SUBTYPE_SH7750 239 bool "Support SH7750 processor" 240 select CPU_SH4 241 help 242 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU. 243 244config CPU_SUBTYPE_SH7091 245 bool "Support SH7091 processor" 246 select CPU_SH4 247 help 248 Select SH7091 if you have an SH-4 based Sega device (such as 249 the Dreamcast, Naomi, and Naomi 2). 250 251config CPU_SUBTYPE_SH7750R 252 bool "Support SH7750R processor" 253 select CPU_SH4 254 255config CPU_SUBTYPE_SH7750S 256 bool "Support SH7750S processor" 257 select CPU_SH4 258 259config CPU_SUBTYPE_SH7751 260 bool "Support SH7751 processor" 261 select CPU_SH4 262 help 263 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU, 264 or if you have a HD6417751R CPU. 265 266config CPU_SUBTYPE_SH7751R 267 bool "Support SH7751R processor" 268 select CPU_SH4 269 270config CPU_SUBTYPE_SH7760 271 bool "Support SH7760 processor" 272 select CPU_SH4 273 274config CPU_SUBTYPE_SH4_202 275 bool "Support SH4-202 processor" 276 select CPU_SH4 277 278# SH-4A Processor Support 279 280config CPU_SUBTYPE_SH7723 281 bool "Support SH7723 processor" 282 select CPU_SH4A 283 select CPU_SHX2 284 select ARCH_SPARSEMEM_ENABLE 285 help 286 Select SH7723 if you have an SH-MobileR2 CPU. 287 288config CPU_SUBTYPE_SH7763 289 bool "Support SH7763 processor" 290 select CPU_SH4A 291 help 292 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU. 293 294config CPU_SUBTYPE_SH7770 295 bool "Support SH7770 processor" 296 select CPU_SH4A 297 298config CPU_SUBTYPE_SH7780 299 bool "Support SH7780 processor" 300 select CPU_SH4A 301 302config CPU_SUBTYPE_SH7785 303 bool "Support SH7785 processor" 304 select CPU_SH4A 305 select CPU_SHX2 306 select ARCH_SPARSEMEM_ENABLE 307 select SYS_SUPPORTS_NUMA 308 309config CPU_SUBTYPE_SHX3 310 bool "Support SH-X3 processor" 311 select CPU_SH4A 312 select CPU_SHX3 313 select ARCH_SPARSEMEM_ENABLE 314 select SYS_SUPPORTS_NUMA 315 select SYS_SUPPORTS_SMP 316 317# SH4AL-DSP Processor Support 318 319config CPU_SUBTYPE_SH7343 320 bool "Support SH7343 processor" 321 select CPU_SH4AL_DSP 322 323config CPU_SUBTYPE_SH7722 324 bool "Support SH7722 processor" 325 select CPU_SH4AL_DSP 326 select CPU_SHX2 327 select ARCH_SPARSEMEM_ENABLE 328 select SYS_SUPPORTS_NUMA 329 330config CPU_SUBTYPE_SH7366 331 bool "Support SH7366 processor" 332 select CPU_SH4AL_DSP 333 select CPU_SHX2 334 select ARCH_SPARSEMEM_ENABLE 335 select SYS_SUPPORTS_NUMA 336 337# SH-5 Processor Support 338 339config CPU_SUBTYPE_SH5_101 340 bool "Support SH5-101 processor" 341 select CPU_SH5 342 343config CPU_SUBTYPE_SH5_103 344 bool "Support SH5-103 processor" 345 select CPU_SH5 346 347endchoice 348 349source "arch/sh/mm/Kconfig" 350source "arch/sh/Kconfig.cpu" 351 352menu "Board support" 353 354config SOLUTION_ENGINE 355 bool 356 357config SH_SOLUTION_ENGINE 358 bool "SolutionEngine" 359 select SOLUTION_ENGINE 360 select CPU_HAS_IPR_IRQ 361 depends on CPU_SUBTYPE_SH7705 || CPU_SUBTYPE_SH7709 || CPU_SUBTYPE_SH7710 || \ 362 CPU_SUBTYPE_SH7712 || CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7750S || \ 363 CPU_SUBTYPE_SH7750R 364 help 365 Select SolutionEngine if configuring for a Hitachi SH7705, SH7709, 366 SH7710, SH7712, SH7750, SH7750S or SH7750R evaluation board. 367 368config SH_7206_SOLUTION_ENGINE 369 bool "SolutionEngine7206" 370 select SOLUTION_ENGINE 371 depends on CPU_SUBTYPE_SH7206 372 help 373 Select 7206 SolutionEngine if configuring for a Hitachi SH7206 374 evaluation board. 375 376config SH_7619_SOLUTION_ENGINE 377 bool "SolutionEngine7619" 378 select SOLUTION_ENGINE 379 depends on CPU_SUBTYPE_SH7619 380 help 381 Select 7619 SolutionEngine if configuring for a Hitachi SH7619 382 evaluation board. 383 384config SH_7721_SOLUTION_ENGINE 385 bool "SolutionEngine7721" 386 select SOLUTION_ENGINE 387 depends on CPU_SUBTYPE_SH7721 388 help 389 Select 7721 SolutionEngine if configuring for a Hitachi SH7721 390 evaluation board. 391 392config SH_7722_SOLUTION_ENGINE 393 bool "SolutionEngine7722" 394 select SOLUTION_ENGINE 395 depends on CPU_SUBTYPE_SH7722 396 help 397 Select 7722 SolutionEngine if configuring for a Hitachi SH772 398 evaluation board. 399 400config SH_7751_SOLUTION_ENGINE 401 bool "SolutionEngine7751" 402 select SOLUTION_ENGINE 403 select CPU_HAS_IPR_IRQ 404 depends on CPU_SUBTYPE_SH7751 405 help 406 Select 7751 SolutionEngine if configuring for a Hitachi SH7751 407 evaluation board. 408 409config SH_7780_SOLUTION_ENGINE 410 bool "SolutionEngine7780" 411 select SOLUTION_ENGINE 412 select SYS_SUPPORTS_PCI 413 depends on CPU_SUBTYPE_SH7780 414 help 415 Select 7780 SolutionEngine if configuring for a Renesas SH7780 416 evaluation board. 417 418config SH_7343_SOLUTION_ENGINE 419 bool "SolutionEngine7343" 420 select SOLUTION_ENGINE 421 depends on CPU_SUBTYPE_SH7343 422 help 423 Select 7343 SolutionEngine if configuring for a Hitachi 424 SH7343 (SH-Mobile 3AS) evaluation board. 425 426config SH_7751_SYSTEMH 427 bool "SystemH7751R" 428 depends on CPU_SUBTYPE_SH7751R 429 help 430 Select SystemH if you are configuring for a Renesas SystemH 431 7751R evaluation board. 432 433config SH_HP6XX 434 bool "HP6XX" 435 select SYS_SUPPORTS_APM_EMULATION 436 select HD6446X_SERIES 437 depends on CPU_SUBTYPE_SH7709 438 help 439 Select HP6XX if configuring for a HP jornada HP6xx. 440 More information (hardware only) at 441 <http://www.hp.com/jornada/>. 442 443config SH_DREAMCAST 444 bool "Dreamcast" 445 select SYS_SUPPORTS_PCI 446 depends on CPU_SUBTYPE_SH7091 447 help 448 Select Dreamcast if configuring for a SEGA Dreamcast. 449 More information at <http://www.linux-sh.org> 450 451config SH_SH03 452 bool "Interface CTP/PCI-SH03" 453 depends on CPU_SUBTYPE_SH7751 454 select CPU_HAS_IPR_IRQ 455 select SYS_SUPPORTS_PCI 456 help 457 CTP/PCI-SH03 is a CPU module computer that is produced 458 by Interface Corporation. 459 More information at <http://www.interface.co.jp> 460 461config SH_SECUREEDGE5410 462 bool "SecureEdge5410" 463 depends on CPU_SUBTYPE_SH7751R 464 select CPU_HAS_IPR_IRQ 465 select SYS_SUPPORTS_PCI 466 help 467 Select SecureEdge5410 if configuring for a SnapGear SH board. 468 This includes both the OEM SecureEdge products as well as the 469 SME product line. 470 471config SH_RTS7751R2D 472 bool "RTS7751R2D" 473 depends on CPU_SUBTYPE_SH7751R 474 select SYS_SUPPORTS_PCI 475 select IO_TRAPPED 476 help 477 Select RTS7751R2D if configuring for a Renesas Technology 478 Sales SH-Graphics board. 479 480config SH_RSK7203 481 bool "RSK7203" 482 depends on CPU_SUBTYPE_SH7203 483 484config SH_SDK7780 485 bool "SDK7780R3" 486 depends on CPU_SUBTYPE_SH7780 487 select SYS_SUPPORTS_PCI 488 help 489 Select SDK7780 if configuring for a Renesas SH7780 SDK7780R3 490 evaluation board. 491 492config SH_HIGHLANDER 493 bool "Highlander" 494 depends on CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 495 select SYS_SUPPORTS_PCI 496 select IO_TRAPPED 497 498config SH_SH7785LCR 499 bool "SH7785LCR" 500 depends on CPU_SUBTYPE_SH7785 501 select SYS_SUPPORTS_PCI 502 select IO_TRAPPED 503 504config SH_SH7785LCR_29BIT_PHYSMAPS 505 bool "SH7785LCR 29bit physmaps" 506 depends on SH_SH7785LCR 507 default y 508 help 509 This board has 2 physical memory maps. It can be changed with 510 DIP switch(S2-5). If you set the DIP switch for S2-5 = ON, 511 you can access all on-board device in 29bit address mode. 512 513config SH_MIGOR 514 bool "Migo-R" 515 depends on CPU_SUBTYPE_SH7722 516 help 517 Select Migo-R if configuring for the SH7722 Migo-R platform 518 by Renesas System Solutions Asia Pte. Ltd. 519 520config SH_AP325RXA 521 bool "AP-325RXA" 522 depends on CPU_SUBTYPE_SH7723 523 help 524 Renesas "AP-325RXA" support. 525 Compatible with ALGO SYSTEM CO.,LTD. "AP-320A" 526 527config SH_SH7763RDP 528 bool "SH7763RDP" 529 depends on CPU_SUBTYPE_SH7763 530 help 531 Select SH7763RDP if configuring for a Renesas SH7763 532 evaluation board. 533 534config SH_EDOSK7705 535 bool "EDOSK7705" 536 depends on CPU_SUBTYPE_SH7705 537 538config SH_SH4202_MICRODEV 539 bool "SH4-202 MicroDev" 540 depends on CPU_SUBTYPE_SH4_202 541 help 542 Select SH4-202 MicroDev if configuring for a SuperH MicroDev board 543 with an SH4-202 CPU. 544 545config SH_LANDISK 546 bool "LANDISK" 547 depends on CPU_SUBTYPE_SH7751R 548 select SYS_SUPPORTS_PCI 549 help 550 I-O DATA DEVICE, INC. "LANDISK Series" support. 551 552config SH_TITAN 553 bool "TITAN" 554 depends on CPU_SUBTYPE_SH7751R 555 select CPU_HAS_IPR_IRQ 556 select SYS_SUPPORTS_PCI 557 help 558 Select Titan if you are configuring for a Nimble Microsystems 559 NetEngine NP51R. 560 561config SH_SHMIN 562 bool "SHMIN" 563 depends on CPU_SUBTYPE_SH7706 564 select CPU_HAS_IPR_IRQ 565 help 566 Select SHMIN if configuring for the SHMIN board. 567 568config SH_LBOX_RE2 569 bool "L-BOX RE2" 570 depends on CPU_SUBTYPE_SH7751R 571 select SYS_SUPPORTS_PCI 572 help 573 Select L-BOX RE2 if configuring for the NTT COMWARE L-BOX RE2. 574 575config SH_X3PROTO 576 bool "SH-X3 Prototype board" 577 depends on CPU_SUBTYPE_SHX3 578 579config SH_MAGIC_PANEL_R2 580 bool "Magic Panel R2" 581 depends on CPU_SUBTYPE_SH7720 582 help 583 Select Magic Panel R2 if configuring for Magic Panel R2. 584 585config SH_CAYMAN 586 bool "Hitachi Cayman" 587 depends on CPU_SUBTYPE_SH5_101 || CPU_SUBTYPE_SH5_103 588 select SYS_SUPPORTS_PCI 589 590endmenu 591 592source "arch/sh/boards/renesas/rts7751r2d/Kconfig" 593source "arch/sh/boards/renesas/r7780rp/Kconfig" 594source "arch/sh/boards/renesas/sdk7780/Kconfig" 595source "arch/sh/boards/renesas/migor/Kconfig" 596source "arch/sh/boards/magicpanelr2/Kconfig" 597 598menu "Timer and clock configuration" 599 600config SH_TMU 601 def_bool y 602 prompt "TMU timer support" 603 depends on CPU_SH3 || CPU_SH4 604 select GENERIC_TIME 605 select GENERIC_CLOCKEVENTS 606 help 607 This enables the use of the TMU as the system timer. 608 609config SH_CMT 610 def_bool y 611 prompt "CMT timer support" 612 depends on CPU_SH2 && !CPU_SUBTYPE_MXG 613 help 614 This enables the use of the CMT as the system timer. 615 616config SH_MTU2 617 def_bool n 618 prompt "MTU2 timer support" 619 depends on CPU_SH2A 620 help 621 This enables the use of the MTU2 as the system timer. 622 623config SH_TIMER_IRQ 624 int 625 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \ 626 CPU_SUBTYPE_SH7763 627 default "86" if CPU_SUBTYPE_SH7619 628 default "140" if CPU_SUBTYPE_SH7206 629 default "142" if CPU_SUBTYPE_SH7203 630 default "238" if CPU_SUBTYPE_MXG 631 default "16" 632 633config SH_PCLK_FREQ 634 int "Peripheral clock frequency (in Hz)" 635 default "27000000" if CPU_SUBTYPE_SH7343 636 default "31250000" if CPU_SUBTYPE_SH7619 637 default "32000000" if CPU_SUBTYPE_SH7722 638 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \ 639 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \ 640 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \ 641 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG 642 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R 643 default "66000000" if CPU_SUBTYPE_SH4_202 644 default "50000000" 645 help 646 This option is used to specify the peripheral clock frequency. 647 This is necessary for determining the reference clock value on 648 platforms lacking an RTC. 649 650config SH_CLK_MD 651 int "CPU Mode Pin Setting" 652 depends on CPU_SH2 653 default 6 if CPU_SUBTYPE_SH7206 654 default 5 if CPU_SUBTYPE_SH7619 655 default 0 656 help 657 MD2 - MD0 pin setting. 658 659source "kernel/time/Kconfig" 660 661endmenu 662 663menu "CPU Frequency scaling" 664 665source "drivers/cpufreq/Kconfig" 666 667config SH_CPU_FREQ 668 tristate "SuperH CPU Frequency driver" 669 depends on CPU_FREQ 670 select CPU_FREQ_TABLE 671 help 672 This adds the cpufreq driver for SuperH. At present, only 673 the SH-4 is supported. 674 675 For details, take a look at <file:Documentation/cpu-freq>. 676 677 If unsure, say N. 678 679endmenu 680 681source "arch/sh/drivers/Kconfig" 682 683endmenu 684 685config ISA_DMA_API 686 bool 687 688menu "Kernel features" 689 690source kernel/Kconfig.hz 691 692config KEXEC 693 bool "kexec system call (EXPERIMENTAL)" 694 depends on SUPERH32 && EXPERIMENTAL 695 help 696 kexec is a system call that implements the ability to shutdown your 697 current kernel, and to start another kernel. It is like a reboot 698 but it is independent of the system firmware. And like a reboot 699 you can start any kernel with it, not just Linux. 700 701 The name comes from the similarity to the exec system call. 702 703 It is an ongoing process to be certain the hardware in a machine 704 is properly shutdown, so do not be surprised if this code does not 705 initially work for you. It may help to enable device hotplugging 706 support. As of this writing the exact hardware interface is 707 strongly in flux, so no good recommendation can be made. 708 709config CRASH_DUMP 710 bool "kernel crash dumps (EXPERIMENTAL)" 711 depends on SUPERH32 && EXPERIMENTAL 712 help 713 Generate crash dump after being started by kexec. 714 This should be normally only set in special crash dump kernels 715 which are loaded in the main kernel with kexec-tools into 716 a specially reserved region and then later executed after 717 a crash by kdump/kexec. The crash dump kernel must be compiled 718 to a memory address not used by the main kernel using 719 MEMORY_START. 720 721 For more details see Documentation/kdump/kdump.txt 722 723config SMP 724 bool "Symmetric multi-processing support" 725 depends on SYS_SUPPORTS_SMP 726 select USE_GENERIC_SMP_HELPERS 727 ---help--- 728 This enables support for systems with more than one CPU. If you have 729 a system with only one CPU, like most personal computers, say N. If 730 you have a system with more than one CPU, say Y. 731 732 If you say N here, the kernel will run on single and multiprocessor 733 machines, but will use only one CPU of a multiprocessor machine. If 734 you say Y here, the kernel will run on many, but not all, 735 singleprocessor machines. On a singleprocessor machine, the kernel 736 will run faster if you say N here. 737 738 People using multiprocessor machines who say Y here should also say 739 Y to "Enhanced Real Time Clock Support", below. 740 741 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 742 available at <http://www.tldp.org/docs.html#howto>. 743 744 If you don't know what to do here, say N. 745 746config NR_CPUS 747 int "Maximum number of CPUs (2-32)" 748 range 2 32 749 depends on SMP 750 default "4" if CPU_SHX3 751 default "2" 752 help 753 This allows you to specify the maximum number of CPUs which this 754 kernel will support. The maximum supported value is 32 and the 755 minimum value which makes sense is 2. 756 757 This is purely to save memory - each supported CPU adds 758 approximately eight kilobytes to the kernel image. 759 760source "kernel/Kconfig.preempt" 761 762config GUSA 763 def_bool y 764 depends on !SMP && SUPERH32 765 help 766 This enables support for gUSA (general UserSpace Atomicity). 767 This is the default implementation for both UP and non-ll/sc 768 CPUs, and is used by the libc, amongst others. 769 770 For additional information, design information can be found 771 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>. 772 773 This should only be disabled for special cases where alternate 774 atomicity implementations exist. 775 776config GUSA_RB 777 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)" 778 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A) 779 help 780 Enabling this option will allow the kernel to implement some 781 atomic operations using a software implemention of load-locked/ 782 store-conditional (LLSC). On machines which do not have hardware 783 LLSC, this should be more efficient than the other alternative of 784 disabling insterrupts around the atomic sequence. 785 786endmenu 787 788menu "Boot options" 789 790config ZERO_PAGE_OFFSET 791 hex "Zero page offset" 792 default "0x00004000" if SH_SH03 793 default "0x00010000" if PAGE_SIZE_64KB 794 default "0x00002000" if PAGE_SIZE_8KB 795 default "0x00001000" 796 help 797 This sets the default offset of zero page. 798 799config BOOT_LINK_OFFSET 800 hex "Link address offset for booting" 801 default "0x00800000" 802 help 803 This option allows you to set the link address offset of the zImage. 804 This can be useful if you are on a board which has a small amount of 805 memory. 806 807config UBC_WAKEUP 808 bool "Wakeup UBC on startup" 809 depends on CPU_SH4 && !CPU_SH4A 810 help 811 Selecting this option will wakeup the User Break Controller (UBC) on 812 startup. Although the UBC is left in an awake state when the processor 813 comes up, some boot loaders misbehave by putting the UBC to sleep in a 814 power saving state, which causes issues with things like ptrace(). 815 816 If unsure, say N. 817 818config CMDLINE_BOOL 819 bool "Default bootloader kernel arguments" 820 821config CMDLINE 822 string "Initial kernel command string" 823 depends on CMDLINE_BOOL 824 default "console=ttySC1,115200" 825 826endmenu 827 828menu "Bus options" 829 830# Even on SuperH devices which don't have an ISA bus, 831# this variable helps the PCMCIA modules handle 832# IRQ requesting properly -- Greg Banks. 833# 834# Though we're generally not interested in it when 835# we're not using PCMCIA, so we make it dependent on 836# PCMCIA outright. -- PFM. 837config ISA 838 def_bool y 839 depends on PCMCIA && HD6446X_SERIES 840 help 841 Find out whether you have ISA slots on your motherboard. ISA is the 842 name of a bus system, i.e. the way the CPU talks to the other stuff 843 inside your box. Other bus systems are PCI, EISA, MicroChannel 844 (MCA) or VESA. ISA is an older system, now being displaced by PCI; 845 newer boards don't support it. If you have ISA, say Y, otherwise N. 846 847config EISA 848 bool 849 ---help--- 850 The Extended Industry Standard Architecture (EISA) bus was 851 developed as an open alternative to the IBM MicroChannel bus. 852 853 The EISA bus provided some of the features of the IBM MicroChannel 854 bus while maintaining backward compatibility with cards made for 855 the older ISA bus. The EISA bus saw limited use between 1988 and 856 1995 when it was made obsolete by the PCI bus. 857 858 Say Y here if you are building a kernel for an EISA-based machine. 859 860 Otherwise, say N. 861 862config MCA 863 bool 864 help 865 MicroChannel Architecture is found in some IBM PS/2 machines and 866 laptops. It is a bus system similar to PCI or ISA. See 867 <file:Documentation/mca.txt> (and especially the web page given 868 there) before attempting to build an MCA bus kernel. 869 870config SBUS 871 bool 872 873config SUPERHYWAY 874 tristate "SuperHyway Bus support" 875 depends on CPU_SUBTYPE_SH4_202 876 877config MAPLE 878 bool "Maple Bus support" 879 depends on SH_DREAMCAST 880 help 881 The Maple Bus is SEGA's serial communication bus for peripherals 882 on the Dreamcast. Without this bus support you won't be able to 883 get your Dreamcast keyboard etc to work, so most users 884 probably want to say 'Y' here, unless you are only using the 885 Dreamcast with a serial line terminal or a remote network 886 connection. 887 888config CF_ENABLER 889 bool "Compact Flash Enabler support" 890 depends on SOLUTION_ENGINE || SH_SH03 891 ---help--- 892 Compact Flash is a small, removable mass storage device introduced 893 in 1994 originally as a PCMCIA device. If you say `Y' here, you 894 compile in support for Compact Flash devices directly connected to 895 a SuperH processor. A Compact Flash FAQ is available at 896 <http://www.compactflash.org/faqs/faq.htm>. 897 898 If your board has "Directly Connected" CompactFlash at area 5 or 6, 899 you may want to enable this option. Then, you can use CF as 900 primary IDE drive (only tested for SanDisk). 901 902 If in doubt, select 'N'. 903 904choice 905 prompt "Compact Flash Connection Area" 906 depends on CF_ENABLER 907 default CF_AREA6 908 909config CF_AREA5 910 bool "Area5" 911 help 912 If your board has "Directly Connected" CompactFlash, You should 913 select the area where your CF is connected to. 914 915 - "Area5" if CompactFlash is connected to Area 5 (0x14000000) 916 - "Area6" if it is connected to Area 6 (0x18000000) 917 918 "Area6" will work for most boards. 919 920config CF_AREA6 921 bool "Area6" 922 923endchoice 924 925config CF_BASE_ADDR 926 hex 927 depends on CF_ENABLER 928 default "0xb8000000" if CF_AREA6 929 default "0xb4000000" if CF_AREA5 930 931source "arch/sh/drivers/pci/Kconfig" 932 933source "drivers/pci/Kconfig" 934 935source "drivers/pcmcia/Kconfig" 936 937source "drivers/pci/hotplug/Kconfig" 938 939endmenu 940 941menu "Executable file formats" 942 943source "fs/Kconfig.binfmt" 944 945endmenu 946 947menu "Power management options (EXPERIMENTAL)" 948depends on EXPERIMENTAL && SYS_SUPPORTS_PM 949 950config ARCH_SUSPEND_POSSIBLE 951 def_bool y 952 depends on !SMP 953 954source kernel/power/Kconfig 955 956endmenu 957 958source "net/Kconfig" 959 960source "drivers/Kconfig" 961 962source "fs/Kconfig" 963 964source "arch/sh/Kconfig.debug" 965 966source "security/Kconfig" 967 968source "crypto/Kconfig" 969 970source "lib/Kconfig" 971