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_LMB 14 select HAVE_OPROFILE 15 select HAVE_GENERIC_DMA_COHERENT 16 select HAVE_ARCH_TRACEHOOK 17 select HAVE_DMA_API_DEBUG 18 select HAVE_DMA_ATTRS 19 select HAVE_PERF_EVENTS 20 select PERF_USE_VMALLOC 21 select HAVE_KERNEL_GZIP 22 select HAVE_KERNEL_BZIP2 23 select HAVE_KERNEL_LZMA 24 select HAVE_KERNEL_LZO 25 select HAVE_SYSCALL_TRACEPOINTS 26 select RTC_LIB 27 select GENERIC_ATOMIC64 28 help 29 The SuperH is a RISC processor targeted for use in embedded systems 30 and consumer electronics; it was also used in the Sega Dreamcast 31 gaming console. The SuperH port has a home page at 32 <http://www.linux-sh.org/>. 33 34config SUPERH32 35 def_bool ARCH = "sh" 36 select HAVE_KPROBES 37 select HAVE_KRETPROBES 38 select HAVE_IOREMAP_PROT if MMU && !X2TLB 39 select HAVE_FUNCTION_TRACER 40 select HAVE_FTRACE_MCOUNT_RECORD 41 select HAVE_DYNAMIC_FTRACE 42 select HAVE_FUNCTION_TRACE_MCOUNT_TEST 43 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE 44 select HAVE_FUNCTION_GRAPH_TRACER 45 select HAVE_ARCH_KGDB 46 select HAVE_HW_BREAKPOINT 47 select PERF_EVENTS if HAVE_HW_BREAKPOINT 48 select ARCH_HIBERNATION_POSSIBLE if MMU 49 50config SUPERH64 51 def_bool ARCH = "sh64" 52 53config ARCH_DEFCONFIG 54 string 55 default "arch/sh/configs/shx3_defconfig" if SUPERH32 56 default "arch/sh/configs/cayman_defconfig" if SUPERH64 57 58config RWSEM_GENERIC_SPINLOCK 59 def_bool y 60 61config RWSEM_XCHGADD_ALGORITHM 62 bool 63 64config GENERIC_BUG 65 def_bool y 66 depends on BUG && SUPERH32 67 68config GENERIC_CSUM 69 def_bool y 70 depends on SUPERH64 71 72config GENERIC_FIND_NEXT_BIT 73 def_bool y 74 75config GENERIC_HWEIGHT 76 def_bool y 77 78config GENERIC_HARDIRQS 79 def_bool y 80 81config GENERIC_HARDIRQS_NO__DO_IRQ 82 def_bool y 83 84config IRQ_PER_CPU 85 def_bool y 86 87config SPARSE_IRQ 88 def_bool y 89 depends on SUPERH32 90 91config GENERIC_GPIO 92 def_bool n 93 94config GENERIC_CALIBRATE_DELAY 95 bool 96 97config GENERIC_IOMAP 98 bool 99 100config GENERIC_TIME 101 def_bool y 102 103config GENERIC_CLOCKEVENTS 104 def_bool y 105 106config GENERIC_CLOCKEVENTS_BROADCAST 107 bool 108 109config GENERIC_CMOS_UPDATE 110 def_bool y 111 depends on SH_SH03 || SH_DREAMCAST 112 113config GENERIC_LOCKBREAK 114 def_bool y 115 depends on SMP && PREEMPT 116 117config SYS_SUPPORTS_PM 118 bool 119 depends on !SMP 120 121config ARCH_SUSPEND_POSSIBLE 122 def_bool n 123 124config ARCH_HIBERNATION_POSSIBLE 125 def_bool n 126 127config SYS_SUPPORTS_APM_EMULATION 128 bool 129 select ARCH_SUSPEND_POSSIBLE 130 131config SYS_SUPPORTS_HUGETLBFS 132 bool 133 134config SYS_SUPPORTS_SMP 135 bool 136 137config SYS_SUPPORTS_NUMA 138 bool 139 140config SYS_SUPPORTS_PCI 141 bool 142 143config SYS_SUPPORTS_CMT 144 bool 145 146config SYS_SUPPORTS_MTU2 147 bool 148 149config SYS_SUPPORTS_TMU 150 bool 151 152config STACKTRACE_SUPPORT 153 def_bool y 154 155config LOCKDEP_SUPPORT 156 def_bool y 157 158config HAVE_LATENCYTOP_SUPPORT 159 def_bool y 160 depends on !SMP 161 162config ARCH_HAS_ILOG2_U32 163 def_bool n 164 165config ARCH_HAS_ILOG2_U64 166 def_bool n 167 168config ARCH_NO_VIRT_TO_BUS 169 def_bool y 170 171config ARCH_HAS_DEFAULT_IDLE 172 def_bool y 173 174config ARCH_HAS_CPU_IDLE_WAIT 175 def_bool y 176 177config IO_TRAPPED 178 bool 179 180config DMA_COHERENT 181 bool 182 183config DMA_NONCOHERENT 184 def_bool !DMA_COHERENT 185 186source "init/Kconfig" 187 188source "kernel/Kconfig.freezer" 189 190menu "System type" 191 192# 193# Processor families 194# 195config CPU_SH2 196 bool 197 198config CPU_SH2A 199 bool 200 select CPU_SH2 201 202config CPU_SH3 203 bool 204 select CPU_HAS_INTEVT 205 select CPU_HAS_SR_RB 206 select SYS_SUPPORTS_TMU 207 208config CPU_SH4 209 bool 210 select CPU_HAS_INTEVT 211 select CPU_HAS_SR_RB 212 select CPU_HAS_FPU if !CPU_SH4AL_DSP 213 select SYS_SUPPORTS_TMU 214 select SYS_SUPPORTS_HUGETLBFS if MMU 215 216config CPU_SH4A 217 bool 218 select CPU_SH4 219 220config CPU_SH4AL_DSP 221 bool 222 select CPU_SH4A 223 select CPU_HAS_DSP 224 225config CPU_SH5 226 bool 227 select CPU_HAS_FPU 228 select SYS_SUPPORTS_TMU 229 select SYS_SUPPORTS_HUGETLBFS if MMU 230 231config CPU_SHX2 232 bool 233 234config CPU_SHX3 235 bool 236 select DMA_COHERENT 237 238config ARCH_SHMOBILE 239 bool 240 select ARCH_SUSPEND_POSSIBLE 241 select PM 242 select PM_RUNTIME 243 244if SUPERH32 245 246choice 247 prompt "Processor sub-type selection" 248 249# 250# Processor subtypes 251# 252 253# SH-2 Processor Support 254 255config CPU_SUBTYPE_SH7619 256 bool "Support SH7619 processor" 257 select CPU_SH2 258 select SYS_SUPPORTS_CMT 259 260# SH-2A Processor Support 261 262config CPU_SUBTYPE_SH7201 263 bool "Support SH7201 processor" 264 select CPU_SH2A 265 select CPU_HAS_FPU 266 select SYS_SUPPORTS_MTU2 267 268config CPU_SUBTYPE_SH7203 269 bool "Support SH7203 processor" 270 select CPU_SH2A 271 select CPU_HAS_FPU 272 select SYS_SUPPORTS_CMT 273 select SYS_SUPPORTS_MTU2 274 275config CPU_SUBTYPE_SH7206 276 bool "Support SH7206 processor" 277 select CPU_SH2A 278 select SYS_SUPPORTS_CMT 279 select SYS_SUPPORTS_MTU2 280 281config CPU_SUBTYPE_SH7263 282 bool "Support SH7263 processor" 283 select CPU_SH2A 284 select CPU_HAS_FPU 285 select SYS_SUPPORTS_CMT 286 select SYS_SUPPORTS_MTU2 287 288config CPU_SUBTYPE_MXG 289 bool "Support MX-G processor" 290 select CPU_SH2A 291 select SYS_SUPPORTS_MTU2 292 help 293 Select MX-G if running on an R8A03022BG part. 294 295# SH-3 Processor Support 296 297config CPU_SUBTYPE_SH7705 298 bool "Support SH7705 processor" 299 select CPU_SH3 300 301config CPU_SUBTYPE_SH7706 302 bool "Support SH7706 processor" 303 select CPU_SH3 304 help 305 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU. 306 307config CPU_SUBTYPE_SH7707 308 bool "Support SH7707 processor" 309 select CPU_SH3 310 help 311 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU. 312 313config CPU_SUBTYPE_SH7708 314 bool "Support SH7708 processor" 315 select CPU_SH3 316 help 317 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or 318 if you have a 100 Mhz SH-3 HD6417708R CPU. 319 320config CPU_SUBTYPE_SH7709 321 bool "Support SH7709 processor" 322 select CPU_SH3 323 help 324 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU. 325 326config CPU_SUBTYPE_SH7710 327 bool "Support SH7710 processor" 328 select CPU_SH3 329 select CPU_HAS_DSP 330 help 331 Select SH7710 if you have a SH3-DSP SH7710 CPU. 332 333config CPU_SUBTYPE_SH7712 334 bool "Support SH7712 processor" 335 select CPU_SH3 336 select CPU_HAS_DSP 337 help 338 Select SH7712 if you have a SH3-DSP SH7712 CPU. 339 340config CPU_SUBTYPE_SH7720 341 bool "Support SH7720 processor" 342 select CPU_SH3 343 select CPU_HAS_DSP 344 select SYS_SUPPORTS_CMT 345 help 346 Select SH7720 if you have a SH3-DSP SH7720 CPU. 347 348config CPU_SUBTYPE_SH7721 349 bool "Support SH7721 processor" 350 select CPU_SH3 351 select CPU_HAS_DSP 352 select SYS_SUPPORTS_CMT 353 help 354 Select SH7721 if you have a SH3-DSP SH7721 CPU. 355 356# SH-4 Processor Support 357 358config CPU_SUBTYPE_SH7750 359 bool "Support SH7750 processor" 360 select CPU_SH4 361 help 362 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU. 363 364config CPU_SUBTYPE_SH7091 365 bool "Support SH7091 processor" 366 select CPU_SH4 367 help 368 Select SH7091 if you have an SH-4 based Sega device (such as 369 the Dreamcast, Naomi, and Naomi 2). 370 371config CPU_SUBTYPE_SH7750R 372 bool "Support SH7750R processor" 373 select CPU_SH4 374 375config CPU_SUBTYPE_SH7750S 376 bool "Support SH7750S processor" 377 select CPU_SH4 378 379config CPU_SUBTYPE_SH7751 380 bool "Support SH7751 processor" 381 select CPU_SH4 382 help 383 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU, 384 or if you have a HD6417751R CPU. 385 386config CPU_SUBTYPE_SH7751R 387 bool "Support SH7751R processor" 388 select CPU_SH4 389 390config CPU_SUBTYPE_SH7760 391 bool "Support SH7760 processor" 392 select CPU_SH4 393 394config CPU_SUBTYPE_SH4_202 395 bool "Support SH4-202 processor" 396 select CPU_SH4 397 398# SH-4A Processor Support 399 400config CPU_SUBTYPE_SH7723 401 bool "Support SH7723 processor" 402 select CPU_SH4A 403 select CPU_SHX2 404 select ARCH_SHMOBILE 405 select ARCH_SPARSEMEM_ENABLE 406 select SYS_SUPPORTS_CMT 407 help 408 Select SH7723 if you have an SH-MobileR2 CPU. 409 410config CPU_SUBTYPE_SH7724 411 bool "Support SH7724 processor" 412 select CPU_SH4A 413 select CPU_SHX2 414 select ARCH_SHMOBILE 415 select ARCH_SPARSEMEM_ENABLE 416 select SYS_SUPPORTS_CMT 417 help 418 Select SH7724 if you have an SH-MobileR2R CPU. 419 420config CPU_SUBTYPE_SH7757 421 bool "Support SH7757 processor" 422 select CPU_SH4A 423 select CPU_SHX2 424 help 425 Select SH7757 if you have a SH4A SH7757 CPU. 426 427config CPU_SUBTYPE_SH7763 428 bool "Support SH7763 processor" 429 select CPU_SH4A 430 help 431 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU. 432 433config CPU_SUBTYPE_SH7770 434 bool "Support SH7770 processor" 435 select CPU_SH4A 436 437config CPU_SUBTYPE_SH7780 438 bool "Support SH7780 processor" 439 select CPU_SH4A 440 441config CPU_SUBTYPE_SH7785 442 bool "Support SH7785 processor" 443 select CPU_SH4A 444 select CPU_SHX2 445 select ARCH_SPARSEMEM_ENABLE 446 select SYS_SUPPORTS_NUMA 447 448config CPU_SUBTYPE_SH7786 449 bool "Support SH7786 processor" 450 select CPU_SH4A 451 select CPU_SHX3 452 select CPU_HAS_PTEAEX 453 select ARCH_SPARSEMEM_ENABLE 454 select SYS_SUPPORTS_NUMA 455 select SYS_SUPPORTS_SMP 456 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 457 458config CPU_SUBTYPE_SHX3 459 bool "Support SH-X3 processor" 460 select CPU_SH4A 461 select CPU_SHX3 462 select ARCH_SPARSEMEM_ENABLE 463 select SYS_SUPPORTS_NUMA 464 select SYS_SUPPORTS_SMP 465 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 466 467# SH4AL-DSP Processor Support 468 469config CPU_SUBTYPE_SH7343 470 bool "Support SH7343 processor" 471 select CPU_SH4AL_DSP 472 select ARCH_SHMOBILE 473 select SYS_SUPPORTS_CMT 474 475config CPU_SUBTYPE_SH7722 476 bool "Support SH7722 processor" 477 select CPU_SH4AL_DSP 478 select CPU_SHX2 479 select ARCH_SHMOBILE 480 select ARCH_SPARSEMEM_ENABLE 481 select SYS_SUPPORTS_NUMA 482 select SYS_SUPPORTS_CMT 483 484config CPU_SUBTYPE_SH7366 485 bool "Support SH7366 processor" 486 select CPU_SH4AL_DSP 487 select CPU_SHX2 488 select ARCH_SHMOBILE 489 select ARCH_SPARSEMEM_ENABLE 490 select SYS_SUPPORTS_NUMA 491 select SYS_SUPPORTS_CMT 492 493endchoice 494 495endif 496 497if SUPERH64 498 499choice 500 prompt "Processor sub-type selection" 501 502# SH-5 Processor Support 503 504config CPU_SUBTYPE_SH5_101 505 bool "Support SH5-101 processor" 506 select CPU_SH5 507 508config CPU_SUBTYPE_SH5_103 509 bool "Support SH5-103 processor" 510 select CPU_SH5 511 512endchoice 513 514endif 515 516source "arch/sh/mm/Kconfig" 517 518source "arch/sh/Kconfig.cpu" 519 520source "arch/sh/boards/Kconfig" 521 522menu "Timer and clock configuration" 523 524config SH_TIMER_TMU 525 bool "TMU timer driver" 526 depends on SYS_SUPPORTS_TMU 527 default y 528 help 529 This enables the build of the TMU timer driver. 530 531config SH_TIMER_CMT 532 bool "CMT timer driver" 533 depends on SYS_SUPPORTS_CMT 534 default y 535 help 536 This enables build of the CMT timer driver. 537 538config SH_TIMER_MTU2 539 bool "MTU2 timer driver" 540 depends on SYS_SUPPORTS_MTU2 541 default y 542 help 543 This enables build of the MTU2 timer driver. 544 545config SH_PCLK_FREQ 546 int "Peripheral clock frequency (in Hz)" 547 depends on SH_CLK_CPG_LEGACY 548 default "31250000" if CPU_SUBTYPE_SH7619 549 default "33333333" if CPU_SUBTYPE_SH7770 || \ 550 CPU_SUBTYPE_SH7760 || \ 551 CPU_SUBTYPE_SH7705 || \ 552 CPU_SUBTYPE_SH7203 || \ 553 CPU_SUBTYPE_SH7206 || \ 554 CPU_SUBTYPE_SH7263 || \ 555 CPU_SUBTYPE_MXG 556 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R 557 default "66000000" if CPU_SUBTYPE_SH4_202 558 default "50000000" 559 help 560 This option is used to specify the peripheral clock frequency. 561 This is necessary for determining the reference clock value on 562 platforms lacking an RTC. 563 564config SH_CLK_CPG 565 def_bool y 566 567config SH_CLK_CPG_LEGACY 568 depends on SH_CLK_CPG 569 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \ 570 !CPU_SUBTYPE_SH7786 571 572config SH_CLK_MD 573 int "CPU Mode Pin Setting" 574 depends on CPU_SH2 575 default 6 if CPU_SUBTYPE_SH7206 576 default 5 if CPU_SUBTYPE_SH7619 577 default 0 578 help 579 MD2 - MD0 pin setting. 580 581source "kernel/time/Kconfig" 582 583endmenu 584 585menu "CPU Frequency scaling" 586 587source "drivers/cpufreq/Kconfig" 588 589config SH_CPU_FREQ 590 tristate "SuperH CPU Frequency driver" 591 depends on CPU_FREQ 592 select CPU_FREQ_TABLE 593 help 594 This adds the cpufreq driver for SuperH. Any CPU that supports 595 clock rate rounding through the clock framework can use this 596 driver. While it will make the kernel slightly larger, this is 597 harmless for CPUs that don't support rate rounding. The driver 598 will also generate a notice in the boot log before disabling 599 itself if the CPU in question is not capable of rate rounding. 600 601 For details, take a look at <file:Documentation/cpu-freq>. 602 603 If unsure, say N. 604 605endmenu 606 607source "arch/sh/drivers/Kconfig" 608 609endmenu 610 611menu "Kernel features" 612 613source kernel/Kconfig.hz 614 615config KEXEC 616 bool "kexec system call (EXPERIMENTAL)" 617 depends on SUPERH32 && EXPERIMENTAL && MMU 618 help 619 kexec is a system call that implements the ability to shutdown your 620 current kernel, and to start another kernel. It is like a reboot 621 but it is independent of the system firmware. And like a reboot 622 you can start any kernel with it, not just Linux. 623 624 The name comes from the similarity to the exec system call. 625 626 It is an ongoing process to be certain the hardware in a machine 627 is properly shutdown, so do not be surprised if this code does not 628 initially work for you. It may help to enable device hotplugging 629 support. As of this writing the exact hardware interface is 630 strongly in flux, so no good recommendation can be made. 631 632config CRASH_DUMP 633 bool "kernel crash dumps (EXPERIMENTAL)" 634 depends on SUPERH32 && EXPERIMENTAL 635 help 636 Generate crash dump after being started by kexec. 637 This should be normally only set in special crash dump kernels 638 which are loaded in the main kernel with kexec-tools into 639 a specially reserved region and then later executed after 640 a crash by kdump/kexec. The crash dump kernel must be compiled 641 to a memory address not used by the main kernel using 642 MEMORY_START. 643 644 For more details see Documentation/kdump/kdump.txt 645 646config KEXEC_JUMP 647 bool "kexec jump (EXPERIMENTAL)" 648 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL 649 help 650 Jump between original kernel and kexeced kernel and invoke 651 code via KEXEC 652 653config SECCOMP 654 bool "Enable seccomp to safely compute untrusted bytecode" 655 depends on PROC_FS 656 help 657 This kernel feature is useful for number crunching applications 658 that may need to compute untrusted bytecode during their 659 execution. By using pipes or other transports made available to 660 the process as file descriptors supporting the read/write 661 syscalls, it's possible to isolate those applications in 662 their own address space using seccomp. Once seccomp is 663 enabled via prctl, it cannot be disabled and the task is only 664 allowed to execute a few safe syscalls defined by each seccomp 665 mode. 666 667 If unsure, say N. 668 669config SMP 670 bool "Symmetric multi-processing support" 671 depends on SYS_SUPPORTS_SMP 672 select USE_GENERIC_SMP_HELPERS 673 ---help--- 674 This enables support for systems with more than one CPU. If you have 675 a system with only one CPU, like most personal computers, say N. If 676 you have a system with more than one CPU, say Y. 677 678 If you say N here, the kernel will run on single and multiprocessor 679 machines, but will use only one CPU of a multiprocessor machine. If 680 you say Y here, the kernel will run on many, but not all, 681 singleprocessor machines. On a singleprocessor machine, the kernel 682 will run faster if you say N here. 683 684 People using multiprocessor machines who say Y here should also say 685 Y to "Enhanced Real Time Clock Support", below. 686 687 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 688 available at <http://www.tldp.org/docs.html#howto>. 689 690 If you don't know what to do here, say N. 691 692config NR_CPUS 693 int "Maximum number of CPUs (2-32)" 694 range 2 32 695 depends on SMP 696 default "4" if CPU_SUBTYPE_SHX3 697 default "2" 698 help 699 This allows you to specify the maximum number of CPUs which this 700 kernel will support. The maximum supported value is 32 and the 701 minimum value which makes sense is 2. 702 703 This is purely to save memory - each supported CPU adds 704 approximately eight kilobytes to the kernel image. 705 706source "kernel/Kconfig.preempt" 707 708config GUSA 709 def_bool y 710 depends on !SMP && SUPERH32 711 help 712 This enables support for gUSA (general UserSpace Atomicity). 713 This is the default implementation for both UP and non-ll/sc 714 CPUs, and is used by the libc, amongst others. 715 716 For additional information, design information can be found 717 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>. 718 719 This should only be disabled for special cases where alternate 720 atomicity implementations exist. 721 722config GUSA_RB 723 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)" 724 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A) 725 help 726 Enabling this option will allow the kernel to implement some 727 atomic operations using a software implementation of load-locked/ 728 store-conditional (LLSC). On machines which do not have hardware 729 LLSC, this should be more efficient than the other alternative of 730 disabling interrupts around the atomic sequence. 731 732endmenu 733 734menu "Boot options" 735 736config ZERO_PAGE_OFFSET 737 hex 738 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \ 739 SH_7751_SOLUTION_ENGINE 740 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03 741 default "0x00002000" if PAGE_SIZE_8KB 742 default "0x00001000" 743 help 744 This sets the default offset of zero page. 745 746config BOOT_LINK_OFFSET 747 hex 748 default "0x00210000" if SH_SHMIN 749 default "0x00400000" if SH_CAYMAN 750 default "0x00810000" if SH_7780_SOLUTION_ENGINE 751 default "0x009e0000" if SH_TITAN 752 default "0x01800000" if SH_SDK7780 753 default "0x02000000" if SH_EDOSK7760 754 default "0x00800000" 755 help 756 This option allows you to set the link address offset of the zImage. 757 This can be useful if you are on a board which has a small amount of 758 memory. 759 760config ENTRY_OFFSET 761 hex 762 default "0x00001000" if PAGE_SIZE_4KB 763 default "0x00002000" if PAGE_SIZE_8KB 764 default "0x00004000" if PAGE_SIZE_16KB 765 default "0x00010000" if PAGE_SIZE_64KB 766 default "0x00000000" 767 768choice 769 prompt "Kernel command line" 770 optional 771 default CMDLINE_OVERWRITE 772 help 773 Setting this option allows the kernel command line arguments 774 to be set. 775 776config CMDLINE_OVERWRITE 777 bool "Overwrite bootloader kernel arguments" 778 help 779 Given string will overwrite any arguments passed in by 780 a bootloader. 781 782config CMDLINE_EXTEND 783 bool "Extend bootloader kernel arguments" 784 help 785 Given string will be concatenated with arguments passed in 786 by a bootloader. 787 788endchoice 789 790config CMDLINE 791 string "Kernel command line arguments string" 792 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND 793 default "console=ttySC1,115200" 794 795endmenu 796 797menu "Bus options" 798 799config SUPERHYWAY 800 tristate "SuperHyway Bus support" 801 depends on CPU_SUBTYPE_SH4_202 802 803config MAPLE 804 bool "Maple Bus support" 805 depends on SH_DREAMCAST 806 help 807 The Maple Bus is SEGA's serial communication bus for peripherals 808 on the Dreamcast. Without this bus support you won't be able to 809 get your Dreamcast keyboard etc to work, so most users 810 probably want to say 'Y' here, unless you are only using the 811 Dreamcast with a serial line terminal or a remote network 812 connection. 813 814config PCI 815 bool "PCI support" 816 depends on SYS_SUPPORTS_PCI 817 select PCI_DOMAINS 818 help 819 Find out whether you have a PCI motherboard. PCI is the name of a 820 bus system, i.e. the way the CPU talks to the other stuff inside 821 your box. If you have PCI, say Y, otherwise N. 822 823config PCI_DOMAINS 824 bool 825 826source "drivers/pci/pcie/Kconfig" 827 828source "drivers/pci/Kconfig" 829 830source "drivers/pcmcia/Kconfig" 831 832source "drivers/pci/hotplug/Kconfig" 833 834endmenu 835 836menu "Executable file formats" 837 838source "fs/Kconfig.binfmt" 839 840endmenu 841 842menu "Power management options (EXPERIMENTAL)" 843depends on EXPERIMENTAL 844 845source "kernel/power/Kconfig" 846 847source "drivers/cpuidle/Kconfig" 848 849endmenu 850 851source "net/Kconfig" 852 853source "drivers/Kconfig" 854 855source "fs/Kconfig" 856 857source "arch/sh/Kconfig.debug" 858 859source "security/Kconfig" 860 861source "crypto/Kconfig" 862 863source "lib/Kconfig" 864