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_IOREMAP_PROT if MMU 17 select HAVE_ARCH_TRACEHOOK 18 select HAVE_DMA_API_DEBUG 19 select HAVE_PERF_EVENTS 20 select HAVE_KERNEL_GZIP 21 select HAVE_KERNEL_BZIP2 22 select HAVE_KERNEL_LZMA 23 select HAVE_SYSCALL_TRACEPOINTS 24 select RTC_LIB 25 select GENERIC_ATOMIC64 26 help 27 The SuperH is a RISC processor targeted for use in embedded systems 28 and consumer electronics; it was also used in the Sega Dreamcast 29 gaming console. The SuperH port has a home page at 30 <http://www.linux-sh.org/>. 31 32config SUPERH32 33 def_bool ARCH = "sh" 34 select HAVE_KPROBES 35 select HAVE_KRETPROBES 36 select HAVE_FUNCTION_TRACER 37 select HAVE_FTRACE_MCOUNT_RECORD 38 select HAVE_DYNAMIC_FTRACE 39 select HAVE_FUNCTION_TRACE_MCOUNT_TEST 40 select HAVE_FUNCTION_GRAPH_TRACER 41 select HAVE_ARCH_KGDB 42 select ARCH_HIBERNATION_POSSIBLE if MMU 43 44config SUPERH64 45 def_bool ARCH = "sh64" 46 47config ARCH_DEFCONFIG 48 string 49 default "arch/sh/configs/shx3_defconfig" if SUPERH32 50 default "arch/sh/configs/cayman_defconfig" if SUPERH64 51 52config RWSEM_GENERIC_SPINLOCK 53 def_bool y 54 55config RWSEM_XCHGADD_ALGORITHM 56 bool 57 58config GENERIC_BUG 59 def_bool y 60 depends on BUG && SUPERH32 61 62config GENERIC_CSUM 63 def_bool y 64 depends on SUPERH64 65 66config GENERIC_FIND_NEXT_BIT 67 def_bool y 68 69config GENERIC_HWEIGHT 70 def_bool y 71 72config GENERIC_HARDIRQS 73 def_bool y 74 75config GENERIC_HARDIRQS_NO__DO_IRQ 76 def_bool y 77 78config GENERIC_IRQ_PROBE 79 def_bool y 80 81config IRQ_PER_CPU 82 def_bool y 83 84config GENERIC_GPIO 85 def_bool n 86 87config GENERIC_CALIBRATE_DELAY 88 bool 89 90config GENERIC_IOMAP 91 bool 92 93config GENERIC_TIME 94 def_bool y 95 96config GENERIC_CLOCKEVENTS 97 def_bool y 98 99config GENERIC_CLOCKEVENTS_BROADCAST 100 bool 101 102config GENERIC_CMOS_UPDATE 103 def_bool y 104 depends on SH_SH03 || SH_DREAMCAST 105 106config GENERIC_LOCKBREAK 107 def_bool y 108 depends on SMP && PREEMPT 109 110config SYS_SUPPORTS_PM 111 bool 112 depends on !SMP 113 114config ARCH_SUSPEND_POSSIBLE 115 def_bool n 116 117config ARCH_HIBERNATION_POSSIBLE 118 def_bool n 119 120config SYS_SUPPORTS_APM_EMULATION 121 bool 122 select ARCH_SUSPEND_POSSIBLE 123 124config SYS_SUPPORTS_HUGETLBFS 125 bool 126 127config SYS_SUPPORTS_SMP 128 bool 129 130config SYS_SUPPORTS_NUMA 131 bool 132 133config SYS_SUPPORTS_PCI 134 bool 135 136config SYS_SUPPORTS_CMT 137 bool 138 139config SYS_SUPPORTS_MTU2 140 bool 141 142config SYS_SUPPORTS_TMU 143 bool 144 145config STACKTRACE_SUPPORT 146 def_bool y 147 148config LOCKDEP_SUPPORT 149 def_bool y 150 151config HAVE_LATENCYTOP_SUPPORT 152 def_bool y 153 depends on !SMP 154 155config ARCH_HAS_ILOG2_U32 156 def_bool n 157 158config ARCH_HAS_ILOG2_U64 159 def_bool n 160 161config ARCH_NO_VIRT_TO_BUS 162 def_bool y 163 164config ARCH_HAS_DEFAULT_IDLE 165 def_bool y 166 167config ARCH_HAS_CPU_IDLE_WAIT 168 def_bool y 169 170config IO_TRAPPED 171 bool 172 173source "init/Kconfig" 174 175source "kernel/Kconfig.freezer" 176 177menu "System type" 178 179# 180# Processor families 181# 182config CPU_SH2 183 bool 184 185config CPU_SH2A 186 bool 187 select CPU_SH2 188 189config CPU_SH3 190 bool 191 select CPU_HAS_INTEVT 192 select CPU_HAS_SR_RB 193 select SYS_SUPPORTS_TMU 194 195config CPU_SH4 196 bool 197 select CPU_HAS_INTEVT 198 select CPU_HAS_SR_RB 199 select CPU_HAS_FPU if !CPU_SH4AL_DSP 200 select SYS_SUPPORTS_TMU 201 select SYS_SUPPORTS_HUGETLBFS if MMU 202 203config CPU_SH4A 204 bool 205 select CPU_SH4 206 207config CPU_SH4AL_DSP 208 bool 209 select CPU_SH4A 210 select CPU_HAS_DSP 211 212config CPU_SH5 213 bool 214 select CPU_HAS_FPU 215 select SYS_SUPPORTS_TMU 216 select SYS_SUPPORTS_HUGETLBFS if MMU 217 218config CPU_SHX2 219 bool 220 221config CPU_SHX3 222 bool 223 224config ARCH_SHMOBILE 225 bool 226 select ARCH_SUSPEND_POSSIBLE 227 select PM 228 select PM_RUNTIME 229 230if SUPERH32 231 232choice 233 prompt "Processor sub-type selection" 234 235# 236# Processor subtypes 237# 238 239# SH-2 Processor Support 240 241config CPU_SUBTYPE_SH7619 242 bool "Support SH7619 processor" 243 select CPU_SH2 244 select SYS_SUPPORTS_CMT 245 246# SH-2A Processor Support 247 248config CPU_SUBTYPE_SH7201 249 bool "Support SH7201 processor" 250 select CPU_SH2A 251 select CPU_HAS_FPU 252 select SYS_SUPPORTS_MTU2 253 254config CPU_SUBTYPE_SH7203 255 bool "Support SH7203 processor" 256 select CPU_SH2A 257 select CPU_HAS_FPU 258 select SYS_SUPPORTS_CMT 259 select SYS_SUPPORTS_MTU2 260 261config CPU_SUBTYPE_SH7206 262 bool "Support SH7206 processor" 263 select CPU_SH2A 264 select SYS_SUPPORTS_CMT 265 select SYS_SUPPORTS_MTU2 266 267config CPU_SUBTYPE_SH7263 268 bool "Support SH7263 processor" 269 select CPU_SH2A 270 select CPU_HAS_FPU 271 select SYS_SUPPORTS_CMT 272 select SYS_SUPPORTS_MTU2 273 274config CPU_SUBTYPE_MXG 275 bool "Support MX-G processor" 276 select CPU_SH2A 277 select SYS_SUPPORTS_MTU2 278 help 279 Select MX-G if running on an R8A03022BG part. 280 281# SH-3 Processor Support 282 283config CPU_SUBTYPE_SH7705 284 bool "Support SH7705 processor" 285 select CPU_SH3 286 287config CPU_SUBTYPE_SH7706 288 bool "Support SH7706 processor" 289 select CPU_SH3 290 help 291 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU. 292 293config CPU_SUBTYPE_SH7707 294 bool "Support SH7707 processor" 295 select CPU_SH3 296 help 297 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU. 298 299config CPU_SUBTYPE_SH7708 300 bool "Support SH7708 processor" 301 select CPU_SH3 302 help 303 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or 304 if you have a 100 Mhz SH-3 HD6417708R CPU. 305 306config CPU_SUBTYPE_SH7709 307 bool "Support SH7709 processor" 308 select CPU_SH3 309 help 310 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU. 311 312config CPU_SUBTYPE_SH7710 313 bool "Support SH7710 processor" 314 select CPU_SH3 315 select CPU_HAS_DSP 316 help 317 Select SH7710 if you have a SH3-DSP SH7710 CPU. 318 319config CPU_SUBTYPE_SH7712 320 bool "Support SH7712 processor" 321 select CPU_SH3 322 select CPU_HAS_DSP 323 help 324 Select SH7712 if you have a SH3-DSP SH7712 CPU. 325 326config CPU_SUBTYPE_SH7720 327 bool "Support SH7720 processor" 328 select CPU_SH3 329 select CPU_HAS_DSP 330 select SYS_SUPPORTS_CMT 331 help 332 Select SH7720 if you have a SH3-DSP SH7720 CPU. 333 334config CPU_SUBTYPE_SH7721 335 bool "Support SH7721 processor" 336 select CPU_SH3 337 select CPU_HAS_DSP 338 select SYS_SUPPORTS_CMT 339 help 340 Select SH7721 if you have a SH3-DSP SH7721 CPU. 341 342# SH-4 Processor Support 343 344config CPU_SUBTYPE_SH7750 345 bool "Support SH7750 processor" 346 select CPU_SH4 347 help 348 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU. 349 350config CPU_SUBTYPE_SH7091 351 bool "Support SH7091 processor" 352 select CPU_SH4 353 help 354 Select SH7091 if you have an SH-4 based Sega device (such as 355 the Dreamcast, Naomi, and Naomi 2). 356 357config CPU_SUBTYPE_SH7750R 358 bool "Support SH7750R processor" 359 select CPU_SH4 360 361config CPU_SUBTYPE_SH7750S 362 bool "Support SH7750S processor" 363 select CPU_SH4 364 365config CPU_SUBTYPE_SH7751 366 bool "Support SH7751 processor" 367 select CPU_SH4 368 help 369 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU, 370 or if you have a HD6417751R CPU. 371 372config CPU_SUBTYPE_SH7751R 373 bool "Support SH7751R processor" 374 select CPU_SH4 375 376config CPU_SUBTYPE_SH7760 377 bool "Support SH7760 processor" 378 select CPU_SH4 379 380config CPU_SUBTYPE_SH4_202 381 bool "Support SH4-202 processor" 382 select CPU_SH4 383 384# SH-4A Processor Support 385 386config CPU_SUBTYPE_SH7723 387 bool "Support SH7723 processor" 388 select CPU_SH4A 389 select CPU_SHX2 390 select ARCH_SHMOBILE 391 select ARCH_SPARSEMEM_ENABLE 392 select SYS_SUPPORTS_CMT 393 help 394 Select SH7723 if you have an SH-MobileR2 CPU. 395 396config CPU_SUBTYPE_SH7724 397 bool "Support SH7724 processor" 398 select CPU_SH4A 399 select CPU_SHX2 400 select ARCH_SHMOBILE 401 select ARCH_SPARSEMEM_ENABLE 402 select SYS_SUPPORTS_CMT 403 help 404 Select SH7724 if you have an SH-MobileR2R CPU. 405 406config CPU_SUBTYPE_SH7757 407 bool "Support SH7757 processor" 408 select CPU_SH4A 409 select CPU_SHX2 410 help 411 Select SH7757 if you have a SH4A SH7757 CPU. 412 413config CPU_SUBTYPE_SH7763 414 bool "Support SH7763 processor" 415 select CPU_SH4A 416 help 417 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU. 418 419config CPU_SUBTYPE_SH7770 420 bool "Support SH7770 processor" 421 select CPU_SH4A 422 423config CPU_SUBTYPE_SH7780 424 bool "Support SH7780 processor" 425 select CPU_SH4A 426 427config CPU_SUBTYPE_SH7785 428 bool "Support SH7785 processor" 429 select CPU_SH4A 430 select CPU_SHX2 431 select ARCH_SPARSEMEM_ENABLE 432 select SYS_SUPPORTS_NUMA 433 434config CPU_SUBTYPE_SH7786 435 bool "Support SH7786 processor" 436 select CPU_SH4A 437 select CPU_SHX3 438 select CPU_HAS_PTEAEX 439 select ARCH_SPARSEMEM_ENABLE 440 select SYS_SUPPORTS_NUMA 441 select SYS_SUPPORTS_SMP 442 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 443 444config CPU_SUBTYPE_SHX3 445 bool "Support SH-X3 processor" 446 select CPU_SH4A 447 select CPU_SHX3 448 select ARCH_SPARSEMEM_ENABLE 449 select SYS_SUPPORTS_NUMA 450 select SYS_SUPPORTS_SMP 451 select GENERIC_CLOCKEVENTS_BROADCAST if SMP 452 453# SH4AL-DSP Processor Support 454 455config CPU_SUBTYPE_SH7343 456 bool "Support SH7343 processor" 457 select CPU_SH4AL_DSP 458 select ARCH_SHMOBILE 459 select SYS_SUPPORTS_CMT 460 461config CPU_SUBTYPE_SH7722 462 bool "Support SH7722 processor" 463 select CPU_SH4AL_DSP 464 select CPU_SHX2 465 select ARCH_SHMOBILE 466 select ARCH_SPARSEMEM_ENABLE 467 select SYS_SUPPORTS_NUMA 468 select SYS_SUPPORTS_CMT 469 470config CPU_SUBTYPE_SH7366 471 bool "Support SH7366 processor" 472 select CPU_SH4AL_DSP 473 select CPU_SHX2 474 select ARCH_SHMOBILE 475 select ARCH_SPARSEMEM_ENABLE 476 select SYS_SUPPORTS_NUMA 477 select SYS_SUPPORTS_CMT 478 479endchoice 480 481endif 482 483if SUPERH64 484 485choice 486 prompt "Processor sub-type selection" 487 488# SH-5 Processor Support 489 490config CPU_SUBTYPE_SH5_101 491 bool "Support SH5-101 processor" 492 select CPU_SH5 493 494config CPU_SUBTYPE_SH5_103 495 bool "Support SH5-103 processor" 496 select CPU_SH5 497 498endchoice 499 500endif 501 502source "arch/sh/mm/Kconfig" 503 504source "arch/sh/Kconfig.cpu" 505 506source "arch/sh/boards/Kconfig" 507 508menu "Timer and clock configuration" 509 510config SH_TIMER_TMU 511 bool "TMU timer driver" 512 depends on SYS_SUPPORTS_TMU 513 default y 514 help 515 This enables the build of the TMU timer driver. 516 517config SH_TIMER_CMT 518 bool "CMT timer driver" 519 depends on SYS_SUPPORTS_CMT 520 default y 521 help 522 This enables build of the CMT timer driver. 523 524config SH_TIMER_MTU2 525 bool "MTU2 timer driver" 526 depends on SYS_SUPPORTS_MTU2 527 default y 528 help 529 This enables build of the MTU2 timer driver. 530 531config SH_PCLK_FREQ 532 int "Peripheral clock frequency (in Hz)" 533 default "27000000" if CPU_SUBTYPE_SH7343 534 default "31250000" if CPU_SUBTYPE_SH7619 535 default "32000000" if CPU_SUBTYPE_SH7722 536 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \ 537 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \ 538 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \ 539 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG || \ 540 CPU_SUBTYPE_SH7786 || CPU_SUBTYPE_SH7724 541 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R 542 default "66000000" if CPU_SUBTYPE_SH4_202 543 default "50000000" 544 help 545 This option is used to specify the peripheral clock frequency. 546 This is necessary for determining the reference clock value on 547 platforms lacking an RTC. 548 549config SH_CLK_CPG 550 def_bool y 551 552config SH_CLK_CPG_LEGACY 553 depends on SH_CLK_CPG 554 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE 555 556config SH_CLK_MD 557 int "CPU Mode Pin Setting" 558 depends on CPU_SH2 559 default 6 if CPU_SUBTYPE_SH7206 560 default 5 if CPU_SUBTYPE_SH7619 561 default 0 562 help 563 MD2 - MD0 pin setting. 564 565source "kernel/time/Kconfig" 566 567endmenu 568 569menu "CPU Frequency scaling" 570 571source "drivers/cpufreq/Kconfig" 572 573config SH_CPU_FREQ 574 tristate "SuperH CPU Frequency driver" 575 depends on CPU_FREQ 576 select CPU_FREQ_TABLE 577 help 578 This adds the cpufreq driver for SuperH. Any CPU that supports 579 clock rate rounding through the clock framework can use this 580 driver. While it will make the kernel slightly larger, this is 581 harmless for CPUs that don't support rate rounding. The driver 582 will also generate a notice in the boot log before disabling 583 itself if the CPU in question is not capable of rate rounding. 584 585 For details, take a look at <file:Documentation/cpu-freq>. 586 587 If unsure, say N. 588 589endmenu 590 591source "arch/sh/drivers/Kconfig" 592 593endmenu 594 595menu "Kernel features" 596 597source kernel/Kconfig.hz 598 599config KEXEC 600 bool "kexec system call (EXPERIMENTAL)" 601 depends on SUPERH32 && EXPERIMENTAL && MMU 602 help 603 kexec is a system call that implements the ability to shutdown your 604 current kernel, and to start another kernel. It is like a reboot 605 but it is independent of the system firmware. And like a reboot 606 you can start any kernel with it, not just Linux. 607 608 The name comes from the similarity to the exec system call. 609 610 It is an ongoing process to be certain the hardware in a machine 611 is properly shutdown, so do not be surprised if this code does not 612 initially work for you. It may help to enable device hotplugging 613 support. As of this writing the exact hardware interface is 614 strongly in flux, so no good recommendation can be made. 615 616config CRASH_DUMP 617 bool "kernel crash dumps (EXPERIMENTAL)" 618 depends on SUPERH32 && EXPERIMENTAL 619 help 620 Generate crash dump after being started by kexec. 621 This should be normally only set in special crash dump kernels 622 which are loaded in the main kernel with kexec-tools into 623 a specially reserved region and then later executed after 624 a crash by kdump/kexec. The crash dump kernel must be compiled 625 to a memory address not used by the main kernel using 626 MEMORY_START. 627 628 For more details see Documentation/kdump/kdump.txt 629 630config KEXEC_JUMP 631 bool "kexec jump (EXPERIMENTAL)" 632 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL 633 help 634 Jump between original kernel and kexeced kernel and invoke 635 code via KEXEC 636 637config SECCOMP 638 bool "Enable seccomp to safely compute untrusted bytecode" 639 depends on PROC_FS 640 help 641 This kernel feature is useful for number crunching applications 642 that may need to compute untrusted bytecode during their 643 execution. By using pipes or other transports made available to 644 the process as file descriptors supporting the read/write 645 syscalls, it's possible to isolate those applications in 646 their own address space using seccomp. Once seccomp is 647 enabled via prctl, it cannot be disabled and the task is only 648 allowed to execute a few safe syscalls defined by each seccomp 649 mode. 650 651 If unsure, say N. 652 653config SMP 654 bool "Symmetric multi-processing support" 655 depends on SYS_SUPPORTS_SMP 656 select USE_GENERIC_SMP_HELPERS 657 ---help--- 658 This enables support for systems with more than one CPU. If you have 659 a system with only one CPU, like most personal computers, say N. If 660 you have a system with more than one CPU, say Y. 661 662 If you say N here, the kernel will run on single and multiprocessor 663 machines, but will use only one CPU of a multiprocessor machine. If 664 you say Y here, the kernel will run on many, but not all, 665 singleprocessor machines. On a singleprocessor machine, the kernel 666 will run faster if you say N here. 667 668 People using multiprocessor machines who say Y here should also say 669 Y to "Enhanced Real Time Clock Support", below. 670 671 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 672 available at <http://www.tldp.org/docs.html#howto>. 673 674 If you don't know what to do here, say N. 675 676config NR_CPUS 677 int "Maximum number of CPUs (2-32)" 678 range 2 32 679 depends on SMP 680 default "4" if CPU_SUBTYPE_SHX3 681 default "2" 682 help 683 This allows you to specify the maximum number of CPUs which this 684 kernel will support. The maximum supported value is 32 and the 685 minimum value which makes sense is 2. 686 687 This is purely to save memory - each supported CPU adds 688 approximately eight kilobytes to the kernel image. 689 690source "kernel/Kconfig.preempt" 691 692config GUSA 693 def_bool y 694 depends on !SMP && SUPERH32 695 help 696 This enables support for gUSA (general UserSpace Atomicity). 697 This is the default implementation for both UP and non-ll/sc 698 CPUs, and is used by the libc, amongst others. 699 700 For additional information, design information can be found 701 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>. 702 703 This should only be disabled for special cases where alternate 704 atomicity implementations exist. 705 706config GUSA_RB 707 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)" 708 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A) 709 help 710 Enabling this option will allow the kernel to implement some 711 atomic operations using a software implementation of load-locked/ 712 store-conditional (LLSC). On machines which do not have hardware 713 LLSC, this should be more efficient than the other alternative of 714 disabling interrupts around the atomic sequence. 715 716config SPARSE_IRQ 717 bool "Support sparse irq numbering" 718 depends on EXPERIMENTAL 719 help 720 This enables support for sparse irqs. This is useful in general 721 as most CPUs have a fairly sparse array of IRQ vectors, which 722 the irq_desc then maps directly on to. Systems with a high 723 number of off-chip IRQs will want to treat this as 724 experimental until they have been independently verified. 725 726 If you don't know what to do here, say N. 727 728endmenu 729 730menu "Boot options" 731 732config ZERO_PAGE_OFFSET 733 hex 734 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \ 735 SH_7751_SOLUTION_ENGINE 736 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03 737 default "0x00002000" if PAGE_SIZE_8KB 738 default "0x00001000" 739 help 740 This sets the default offset of zero page. 741 742config BOOT_LINK_OFFSET 743 hex 744 default "0x00210000" if SH_SHMIN 745 default "0x00400000" if SH_CAYMAN 746 default "0x00810000" if SH_7780_SOLUTION_ENGINE 747 default "0x009e0000" if SH_TITAN 748 default "0x01800000" if SH_SDK7780 749 default "0x02000000" if SH_EDOSK7760 750 default "0x00800000" 751 help 752 This option allows you to set the link address offset of the zImage. 753 This can be useful if you are on a board which has a small amount of 754 memory. 755 756config ENTRY_OFFSET 757 hex 758 default "0x00001000" if PAGE_SIZE_4KB 759 default "0x00002000" if PAGE_SIZE_8KB 760 default "0x00004000" if PAGE_SIZE_16KB 761 default "0x00010000" if PAGE_SIZE_64KB 762 default "0x00000000" 763 764config UBC_WAKEUP 765 bool "Wakeup UBC on startup" 766 depends on CPU_SH4 && !CPU_SH4A 767 help 768 Selecting this option will wakeup the User Break Controller (UBC) on 769 startup. Although the UBC is left in an awake state when the processor 770 comes up, some boot loaders misbehave by putting the UBC to sleep in a 771 power saving state, which causes issues with things like ptrace(). 772 773 If unsure, say N. 774 775choice 776 prompt "Kernel command line" 777 optional 778 default CMDLINE_OVERWRITE 779 help 780 Setting this option allows the kernel command line arguments 781 to be set. 782 783config CMDLINE_OVERWRITE 784 bool "Overwrite bootloader kernel arguments" 785 help 786 Given string will overwrite any arguments passed in by 787 a bootloader. 788 789config CMDLINE_EXTEND 790 bool "Extend bootloader kernel arguments" 791 help 792 Given string will be concatenated with arguments passed in 793 by a bootloader. 794 795endchoice 796 797config CMDLINE 798 string "Kernel command line arguments string" 799 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND 800 default "console=ttySC1,115200" 801 802endmenu 803 804menu "Bus options" 805 806config SUPERHYWAY 807 tristate "SuperHyway Bus support" 808 depends on CPU_SUBTYPE_SH4_202 809 810config MAPLE 811 bool "Maple Bus support" 812 depends on SH_DREAMCAST 813 help 814 The Maple Bus is SEGA's serial communication bus for peripherals 815 on the Dreamcast. Without this bus support you won't be able to 816 get your Dreamcast keyboard etc to work, so most users 817 probably want to say 'Y' here, unless you are only using the 818 Dreamcast with a serial line terminal or a remote network 819 connection. 820 821source "arch/sh/drivers/pci/Kconfig" 822 823source "drivers/pci/pcie/Kconfig" 824 825source "drivers/pci/Kconfig" 826 827source "drivers/pcmcia/Kconfig" 828 829source "drivers/pci/hotplug/Kconfig" 830 831endmenu 832 833menu "Executable file formats" 834 835source "fs/Kconfig.binfmt" 836 837endmenu 838 839menu "Power management options (EXPERIMENTAL)" 840depends on EXPERIMENTAL 841 842source "kernel/power/Kconfig" 843 844source "drivers/cpuidle/Kconfig" 845 846endmenu 847 848source "net/Kconfig" 849 850source "drivers/Kconfig" 851 852source "fs/Kconfig" 853 854source "arch/sh/Kconfig.debug" 855 856source "security/Kconfig" 857 858source "crypto/Kconfig" 859 860source "lib/Kconfig" 861