arch/sh/Kconfig

   1 config SUPERH
   2         def_bool y
   3         select EMBEDDED
   4         select CLKDEV_LOOKUP
   5         select HAVE_IDE if HAS_IOPORT
   6         select HAVE_MEMBLOCK
   7         select HAVE_OPROFILE
   8         select HAVE_GENERIC_DMA_COHERENT
   9         select HAVE_ARCH_TRACEHOOK
  10         select HAVE_DMA_API_DEBUG
  11         select HAVE_DMA_ATTRS
  12         select HAVE_IRQ_WORK
  13         select HAVE_PERF_EVENTS
  14         select PERF_USE_VMALLOC
  15         select HAVE_KERNEL_GZIP
  16         select HAVE_KERNEL_BZIP2
  17         select HAVE_KERNEL_LZMA
  18         select HAVE_KERNEL_LZO
  19         select HAVE_SYSCALL_TRACEPOINTS
  20         select HAVE_REGS_AND_STACK_ACCESS_API
  21         select HAVE_GENERIC_HARDIRQS
  22         select HAVE_SPARSE_IRQ
  23         select RTC_LIB
  24         select GENERIC_ATOMIC64
  25         select GENERIC_HARDIRQS_NO_DEPRECATED
  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
  32 config SUPERH32
  33         def_bool ARCH = "sh"
  34         select HAVE_KPROBES
  35         select HAVE_KRETPROBES
  36         select HAVE_IOREMAP_PROT if MMU && !X2TLB
  37         select HAVE_FUNCTION_TRACER
  38         select HAVE_FTRACE_MCOUNT_RECORD
  39         select HAVE_DYNAMIC_FTRACE
  40         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  41         select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
  42         select HAVE_FUNCTION_GRAPH_TRACER
  43         select HAVE_ARCH_KGDB
  44         select HAVE_HW_BREAKPOINT
  45         select HAVE_MIXED_BREAKPOINTS_REGS
  46         select PERF_EVENTS
  47         select ARCH_HIBERNATION_POSSIBLE if MMU
  48         select SPARSE_IRQ
  49
  50 config SUPERH64
  51         def_bool ARCH = "sh64"
  52
  53 config ARCH_DEFCONFIG
  54         string
  55         default "arch/sh/configs/shx3_defconfig" if SUPERH32
  56         default "arch/sh/configs/cayman_defconfig" if SUPERH64
  57
  58 config RWSEM_GENERIC_SPINLOCK
  59         def_bool y
  60
  61 config RWSEM_XCHGADD_ALGORITHM
  62         bool
  63
  64 config GENERIC_BUG
  65         def_bool y
  66         depends on BUG && SUPERH32
  67
  68 config GENERIC_CSUM
  69         def_bool y
  70         depends on SUPERH64
  71
  72 config GENERIC_FIND_NEXT_BIT
  73         def_bool y
  74
  75 config GENERIC_HWEIGHT
  76         def_bool y
  77
  78 config IRQ_PER_CPU
  79         def_bool y
  80
  81 config GENERIC_GPIO
  82         def_bool n
  83
  84 config GENERIC_CALIBRATE_DELAY
  85         bool
  86
  87 config GENERIC_IOMAP
  88         bool
  89
  90 config GENERIC_CLOCKEVENTS
  91         def_bool y
  92
  93 config GENERIC_CLOCKEVENTS_BROADCAST
  94         bool
  95
  96 config GENERIC_CMOS_UPDATE
  97         def_bool y
  98         depends on SH_SH03 || SH_DREAMCAST
  99
 100 config GENERIC_LOCKBREAK
 101         def_bool y
 102         depends on SMP && PREEMPT
 103
 104 config SYS_SUPPORTS_PM
 105         bool
 106         depends on !SMP
 107
 108 config ARCH_SUSPEND_POSSIBLE
 109         def_bool n
 110
 111 config ARCH_HIBERNATION_POSSIBLE
 112         def_bool n
 113
 114 config SYS_SUPPORTS_APM_EMULATION
 115         bool
 116         select ARCH_SUSPEND_POSSIBLE
 117
 118 config SYS_SUPPORTS_HUGETLBFS
 119         bool
 120
 121 config SYS_SUPPORTS_SMP
 122         bool
 123
 124 config SYS_SUPPORTS_NUMA
 125         bool
 126
 127 config SYS_SUPPORTS_PCI
 128         bool
 129
 130 config SYS_SUPPORTS_CMT
 131         bool
 132
 133 config SYS_SUPPORTS_MTU2
 134         bool
 135
 136 config SYS_SUPPORTS_TMU
 137         bool
 138
 139 config STACKTRACE_SUPPORT
 140         def_bool y
 141
 142 config LOCKDEP_SUPPORT
 143         def_bool y
 144
 145 config HAVE_LATENCYTOP_SUPPORT
 146         def_bool y
 147
 148 config ARCH_HAS_ILOG2_U32
 149         def_bool n
 150
 151 config ARCH_HAS_ILOG2_U64
 152         def_bool n
 153
 154 config ARCH_NO_VIRT_TO_BUS
 155         def_bool y
 156
 157 config ARCH_HAS_DEFAULT_IDLE
 158         def_bool y
 159
 160 config ARCH_HAS_CPU_IDLE_WAIT
 161         def_bool y
 162
 163 config NO_IOPORT
 164         bool
 165
 166 config IO_TRAPPED
 167         bool
 168
 169 config DMA_COHERENT
 170         bool
 171
 172 config DMA_NONCOHERENT
 173         def_bool !DMA_COHERENT
 174
 175 config NEED_DMA_MAP_STATE
 176         def_bool DMA_NONCOHERENT
 177
 178 config NEED_SG_DMA_LENGTH
 179         def_bool y
 180
 181 source "init/Kconfig"
 182
 183 source "kernel/Kconfig.freezer"
 184
 185 menu "System type"
 186
 187 #
 188 # Processor families
 189 #
 190 config CPU_SH2
 191         bool
 192
 193 config CPU_SH2A
 194         bool
 195         select CPU_SH2
 196
 197 config CPU_SH3
 198         bool
 199         select CPU_HAS_INTEVT
 200         select CPU_HAS_SR_RB
 201         select SYS_SUPPORTS_TMU
 202
 203 config CPU_SH4
 204         bool
 205         select CPU_HAS_INTEVT
 206         select CPU_HAS_SR_RB
 207         select CPU_HAS_FPU if !CPU_SH4AL_DSP
 208         select SYS_SUPPORTS_TMU
 209         select SYS_SUPPORTS_HUGETLBFS if MMU
 210
 211 config CPU_SH4A
 212         bool
 213         select CPU_SH4
 214
 215 config CPU_SH4AL_DSP
 216         bool
 217         select CPU_SH4A
 218         select CPU_HAS_DSP
 219
 220 config CPU_SH5
 221         bool
 222         select CPU_HAS_FPU
 223         select SYS_SUPPORTS_TMU
 224         select SYS_SUPPORTS_HUGETLBFS if MMU
 225
 226 config CPU_SHX2
 227         bool
 228
 229 config CPU_SHX3
 230         bool
 231         select DMA_COHERENT
 232         select SYS_SUPPORTS_SMP
 233         select SYS_SUPPORTS_NUMA
 234
 235 config ARCH_SHMOBILE
 236         bool
 237         select ARCH_SUSPEND_POSSIBLE
 238         select PM
 239         select PM_RUNTIME
 240
 241 config CPU_HAS_PMU
 242        depends on CPU_SH4 || CPU_SH4A
 243        default y
 244        bool
 245
 246 if SUPERH32
 247
 248 choice
 249         prompt "Processor sub-type selection"
 250
 251 #
 252 # Processor subtypes
 253 #
 254
 255 # SH-2 Processor Support
 256
 257 config CPU_SUBTYPE_SH7619
 258         bool "Support SH7619 processor"
 259         select CPU_SH2
 260         select SYS_SUPPORTS_CMT
 261
 262 # SH-2A Processor Support
 263
 264 config CPU_SUBTYPE_SH7201
 265         bool "Support SH7201 processor"
 266         select CPU_SH2A
 267         select CPU_HAS_FPU
 268         select SYS_SUPPORTS_MTU2
 269
 270 config CPU_SUBTYPE_SH7203
 271         bool "Support SH7203 processor"
 272         select CPU_SH2A
 273         select CPU_HAS_FPU
 274         select SYS_SUPPORTS_CMT
 275         select SYS_SUPPORTS_MTU2
 276
 277 config CPU_SUBTYPE_SH7206
 278         bool "Support SH7206 processor"
 279         select CPU_SH2A
 280         select SYS_SUPPORTS_CMT
 281         select SYS_SUPPORTS_MTU2
 282
 283 config CPU_SUBTYPE_SH7263
 284         bool "Support SH7263 processor"
 285         select CPU_SH2A
 286         select CPU_HAS_FPU
 287         select SYS_SUPPORTS_CMT
 288         select SYS_SUPPORTS_MTU2
 289
 290 config CPU_SUBTYPE_MXG
 291         bool "Support MX-G processor"
 292         select CPU_SH2A
 293         select SYS_SUPPORTS_MTU2
 294         help
 295           Select MX-G if running on an R8A03022BG part.
 296
 297 # SH-3 Processor Support
 298
 299 config CPU_SUBTYPE_SH7705
 300         bool "Support SH7705 processor"
 301         select CPU_SH3
 302
 303 config CPU_SUBTYPE_SH7706
 304         bool "Support SH7706 processor"
 305         select CPU_SH3
 306         help
 307           Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
 308
 309 config CPU_SUBTYPE_SH7707
 310         bool "Support SH7707 processor"
 311         select CPU_SH3
 312         help
 313           Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
 314
 315 config CPU_SUBTYPE_SH7708
 316         bool "Support SH7708 processor"
 317         select CPU_SH3
 318         help
 319           Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
 320           if you have a 100 Mhz SH-3 HD6417708R CPU.
 321
 322 config CPU_SUBTYPE_SH7709
 323         bool "Support SH7709 processor"
 324         select CPU_SH3
 325         help
 326           Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
 327
 328 config CPU_SUBTYPE_SH7710
 329         bool "Support SH7710 processor"
 330         select CPU_SH3
 331         select CPU_HAS_DSP
 332         help
 333           Select SH7710 if you have a SH3-DSP SH7710 CPU.
 334
 335 config CPU_SUBTYPE_SH7712
 336         bool "Support SH7712 processor"
 337         select CPU_SH3
 338         select CPU_HAS_DSP
 339         help
 340           Select SH7712 if you have a SH3-DSP SH7712 CPU.
 341
 342 config CPU_SUBTYPE_SH7720
 343         bool "Support SH7720 processor"
 344         select CPU_SH3
 345         select CPU_HAS_DSP
 346         select SYS_SUPPORTS_CMT
 347         help
 348           Select SH7720 if you have a SH3-DSP SH7720 CPU.
 349
 350 config CPU_SUBTYPE_SH7721
 351         bool "Support SH7721 processor"
 352         select CPU_SH3
 353         select CPU_HAS_DSP
 354         select SYS_SUPPORTS_CMT
 355         help
 356           Select SH7721 if you have a SH3-DSP SH7721 CPU.
 357
 358 # SH-4 Processor Support
 359
 360 config CPU_SUBTYPE_SH7750
 361         bool "Support SH7750 processor"
 362         select CPU_SH4
 363         help
 364           Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
 365
 366 config CPU_SUBTYPE_SH7091
 367         bool "Support SH7091 processor"
 368         select CPU_SH4
 369         help
 370           Select SH7091 if you have an SH-4 based Sega device (such as
 371           the Dreamcast, Naomi, and Naomi 2).
 372
 373 config CPU_SUBTYPE_SH7750R
 374         bool "Support SH7750R processor"
 375         select CPU_SH4
 376
 377 config CPU_SUBTYPE_SH7750S
 378         bool "Support SH7750S processor"
 379         select CPU_SH4
 380
 381 config CPU_SUBTYPE_SH7751
 382         bool "Support SH7751 processor"
 383         select CPU_SH4
 384         help
 385           Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
 386           or if you have a HD6417751R CPU.
 387
 388 config CPU_SUBTYPE_SH7751R
 389         bool "Support SH7751R processor"
 390         select CPU_SH4
 391
 392 config CPU_SUBTYPE_SH7760
 393         bool "Support SH7760 processor"
 394         select CPU_SH4
 395
 396 config CPU_SUBTYPE_SH4_202
 397         bool "Support SH4-202 processor"
 398         select CPU_SH4
 399
 400 # SH-4A Processor Support
 401
 402 config CPU_SUBTYPE_SH7723
 403         bool "Support SH7723 processor"
 404         select CPU_SH4A
 405         select CPU_SHX2
 406         select ARCH_SHMOBILE
 407         select ARCH_SPARSEMEM_ENABLE
 408         select SYS_SUPPORTS_CMT
 409         help
 410           Select SH7723 if you have an SH-MobileR2 CPU.
 411
 412 config CPU_SUBTYPE_SH7724
 413         bool "Support SH7724 processor"
 414         select CPU_SH4A
 415         select CPU_SHX2
 416         select ARCH_SHMOBILE
 417         select ARCH_SPARSEMEM_ENABLE
 418         select SYS_SUPPORTS_CMT
 419         help
 420           Select SH7724 if you have an SH-MobileR2R CPU.
 421
 422 config CPU_SUBTYPE_SH7757
 423         bool "Support SH7757 processor"
 424         select CPU_SH4A
 425         select CPU_SHX2
 426         help
 427           Select SH7757 if you have a SH4A SH7757 CPU.
 428
 429 config CPU_SUBTYPE_SH7763
 430         bool "Support SH7763 processor"
 431         select CPU_SH4A
 432         help
 433           Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
 434
 435 config CPU_SUBTYPE_SH7770
 436         bool "Support SH7770 processor"
 437         select CPU_SH4A
 438
 439 config CPU_SUBTYPE_SH7780
 440         bool "Support SH7780 processor"
 441         select CPU_SH4A
 442
 443 config CPU_SUBTYPE_SH7785
 444         bool "Support SH7785 processor"
 445         select CPU_SH4A
 446         select CPU_SHX2
 447         select ARCH_SPARSEMEM_ENABLE
 448         select SYS_SUPPORTS_NUMA
 449
 450 config CPU_SUBTYPE_SH7786
 451         bool "Support SH7786 processor"
 452         select CPU_SH4A
 453         select CPU_SHX3
 454         select CPU_HAS_PTEAEX
 455         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 456
 457 config CPU_SUBTYPE_SHX3
 458         bool "Support SH-X3 processor"
 459         select CPU_SH4A
 460         select CPU_SHX3
 461         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 462         select ARCH_REQUIRE_GPIOLIB
 463
 464 # SH4AL-DSP Processor Support
 465
 466 config CPU_SUBTYPE_SH7343
 467         bool "Support SH7343 processor"
 468         select CPU_SH4AL_DSP
 469         select ARCH_SHMOBILE
 470         select SYS_SUPPORTS_CMT
 471
 472 config CPU_SUBTYPE_SH7722
 473         bool "Support SH7722 processor"
 474         select CPU_SH4AL_DSP
 475         select CPU_SHX2
 476         select ARCH_SHMOBILE
 477         select ARCH_SPARSEMEM_ENABLE
 478         select SYS_SUPPORTS_NUMA
 479         select SYS_SUPPORTS_CMT
 480
 481 config CPU_SUBTYPE_SH7366
 482         bool "Support SH7366 processor"
 483         select CPU_SH4AL_DSP
 484         select CPU_SHX2
 485         select ARCH_SHMOBILE
 486         select ARCH_SPARSEMEM_ENABLE
 487         select SYS_SUPPORTS_NUMA
 488         select SYS_SUPPORTS_CMT
 489
 490 endchoice
 491
 492 endif
 493
 494 if SUPERH64
 495
 496 choice
 497         prompt "Processor sub-type selection"
 498
 499 # SH-5 Processor Support
 500
 501 config CPU_SUBTYPE_SH5_101
 502         bool "Support SH5-101 processor"
 503         select CPU_SH5
 504
 505 config CPU_SUBTYPE_SH5_103
 506         bool "Support SH5-103 processor"
 507         select CPU_SH5
 508
 509 endchoice
 510
 511 endif
 512
 513 source "arch/sh/mm/Kconfig"
 514
 515 source "arch/sh/Kconfig.cpu"
 516
 517 source "arch/sh/boards/Kconfig"
 518
 519 menu "Timer and clock configuration"
 520
 521 config SH_TIMER_TMU
 522         bool "TMU timer driver"
 523         depends on SYS_SUPPORTS_TMU
 524         default y
 525         help
 526           This enables the build of the TMU timer driver.
 527
 528 config SH_TIMER_CMT
 529         bool "CMT timer driver"
 530         depends on SYS_SUPPORTS_CMT
 531         default y
 532         help
 533           This enables build of the CMT timer driver.
 534
 535 config SH_TIMER_MTU2
 536         bool "MTU2 timer driver"
 537         depends on SYS_SUPPORTS_MTU2
 538         default y
 539         help
 540           This enables build of the MTU2 timer driver.
 541
 542 config SH_PCLK_FREQ
 543         int "Peripheral clock frequency (in Hz)"
 544         depends on SH_CLK_CPG_LEGACY
 545         default "31250000" if CPU_SUBTYPE_SH7619
 546         default "33333333" if CPU_SUBTYPE_SH7770 || \
 547                               CPU_SUBTYPE_SH7760 || \
 548                               CPU_SUBTYPE_SH7705 || \
 549                               CPU_SUBTYPE_SH7203 || \
 550                               CPU_SUBTYPE_SH7206 || \
 551                               CPU_SUBTYPE_SH7263 || \
 552                               CPU_SUBTYPE_MXG
 553         default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
 554         default "66000000" if CPU_SUBTYPE_SH4_202
 555         default "50000000"
 556         help
 557           This option is used to specify the peripheral clock frequency.
 558           This is necessary for determining the reference clock value on
 559           platforms lacking an RTC.
 560
 561 config SH_CLK_CPG
 562         def_bool y
 563
 564 config SH_CLK_CPG_LEGACY
 565         depends on SH_CLK_CPG
 566         def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
 567                       !CPU_SHX3 && !CPU_SUBTYPE_SH7757
 568
 569 config SH_CLK_MD
 570         int "CPU Mode Pin Setting"
 571         depends on CPU_SH2
 572         default 6 if CPU_SUBTYPE_SH7206
 573         default 5 if CPU_SUBTYPE_SH7619
 574         default 0
 575         help
 576           MD2 - MD0 pin setting.
 577
 578 source "kernel/time/Kconfig"
 579
 580 endmenu
 581
 582 menu "CPU Frequency scaling"
 583
 584 source "drivers/cpufreq/Kconfig"
 585
 586 config SH_CPU_FREQ
 587         tristate "SuperH CPU Frequency driver"
 588         depends on CPU_FREQ
 589         select CPU_FREQ_TABLE
 590         help
 591           This adds the cpufreq driver for SuperH. Any CPU that supports
 592           clock rate rounding through the clock framework can use this
 593           driver. While it will make the kernel slightly larger, this is
 594           harmless for CPUs that don't support rate rounding. The driver
 595           will also generate a notice in the boot log before disabling
 596           itself if the CPU in question is not capable of rate rounding.
 597
 598           For details, take a look at <file:Documentation/cpu-freq>.
 599
 600           If unsure, say N.
 601
 602 endmenu
 603
 604 source "arch/sh/drivers/Kconfig"
 605
 606 endmenu
 607
 608 menu "Kernel features"
 609
 610 source kernel/Kconfig.hz
 611
 612 config KEXEC
 613         bool "kexec system call (EXPERIMENTAL)"
 614         depends on SUPERH32 && EXPERIMENTAL && MMU
 615         help
 616           kexec is a system call that implements the ability to shutdown your
 617           current kernel, and to start another kernel.  It is like a reboot
 618           but it is independent of the system firmware.  And like a reboot
 619           you can start any kernel with it, not just Linux.
 620
 621           The name comes from the similarity to the exec system call.
 622
 623           It is an ongoing process to be certain the hardware in a machine
 624           is properly shutdown, so do not be surprised if this code does not
 625           initially work for you.  It may help to enable device hotplugging
 626           support.  As of this writing the exact hardware interface is
 627           strongly in flux, so no good recommendation can be made.
 628
 629 config CRASH_DUMP
 630         bool "kernel crash dumps (EXPERIMENTAL)"
 631         depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
 632         help
 633           Generate crash dump after being started by kexec.
 634           This should be normally only set in special crash dump kernels
 635           which are loaded in the main kernel with kexec-tools into
 636           a specially reserved region and then later executed after
 637           a crash by kdump/kexec. The crash dump kernel must be compiled
 638           to a memory address not used by the main kernel using
 639           MEMORY_START.
 640
 641           For more details see Documentation/kdump/kdump.txt
 642
 643 config KEXEC_JUMP
 644         bool "kexec jump (EXPERIMENTAL)"
 645         depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
 646         help
 647           Jump between original kernel and kexeced kernel and invoke
 648           code via KEXEC
 649
 650 config SECCOMP
 651         bool "Enable seccomp to safely compute untrusted bytecode"
 652         depends on PROC_FS
 653         help
 654           This kernel feature is useful for number crunching applications
 655           that may need to compute untrusted bytecode during their
 656           execution. By using pipes or other transports made available to
 657           the process as file descriptors supporting the read/write
 658           syscalls, it's possible to isolate those applications in
 659           their own address space using seccomp. Once seccomp is
 660           enabled via prctl, it cannot be disabled and the task is only
 661           allowed to execute a few safe syscalls defined by each seccomp
 662           mode.
 663
 664           If unsure, say N.
 665
 666 config SMP
 667         bool "Symmetric multi-processing support"
 668         depends on SYS_SUPPORTS_SMP
 669         select USE_GENERIC_SMP_HELPERS
 670         ---help---
 671           This enables support for systems with more than one CPU. If you have
 672           a system with only one CPU, like most personal computers, say N. If
 673           you have a system with more than one CPU, say Y.
 674
 675           If you say N here, the kernel will run on single and multiprocessor
 676           machines, but will use only one CPU of a multiprocessor machine. If
 677           you say Y here, the kernel will run on many, but not all,
 678           singleprocessor machines. On a singleprocessor machine, the kernel
 679           will run faster if you say N here.
 680
 681           People using multiprocessor machines who say Y here should also say
 682           Y to "Enhanced Real Time Clock Support", below.
 683
 684           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 685           available at <http://www.tldp.org/docs.html#howto>.
 686
 687           If you don't know what to do here, say N.
 688
 689 config NR_CPUS
 690         int "Maximum number of CPUs (2-32)"
 691         range 2 32
 692         depends on SMP
 693         default "4" if CPU_SUBTYPE_SHX3
 694         default "2"
 695         help
 696           This allows you to specify the maximum number of CPUs which this
 697           kernel will support.  The maximum supported value is 32 and the
 698           minimum value which makes sense is 2.
 699
 700           This is purely to save memory - each supported CPU adds
 701           approximately eight kilobytes to the kernel image.
 702
 703 config HOTPLUG_CPU
 704         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 705         depends on SMP && HOTPLUG && EXPERIMENTAL
 706         help
 707           Say Y here to experiment with turning CPUs off and on.  CPUs
 708           can be controlled through /sys/devices/system/cpu.
 709
 710 source "kernel/Kconfig.preempt"
 711
 712 config GUSA
 713         def_bool y
 714         depends on !SMP && SUPERH32
 715         help
 716           This enables support for gUSA (general UserSpace Atomicity).
 717           This is the default implementation for both UP and non-ll/sc
 718           CPUs, and is used by the libc, amongst others.
 719
 720           For additional information, design information can be found
 721           in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
 722
 723           This should only be disabled for special cases where alternate
 724           atomicity implementations exist.
 725
 726 config GUSA_RB
 727         bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
 728         depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
 729         help
 730           Enabling this option will allow the kernel to implement some
 731           atomic operations using a software implementation of load-locked/
 732           store-conditional (LLSC). On machines which do not have hardware
 733           LLSC, this should be more efficient than the other alternative of
 734           disabling interrupts around the atomic sequence.
 735
 736 config HW_PERF_EVENTS
 737         bool "Enable hardware performance counter support for perf events"
 738         depends on PERF_EVENTS && CPU_HAS_PMU
 739         default y
 740         help
 741           Enable hardware performance counter support for perf events. If
 742           disabled, perf events will use software events only.
 743
 744 source "drivers/sh/Kconfig"
 745
 746 endmenu
 747
 748 menu "Boot options"
 749
 750 config ZERO_PAGE_OFFSET
 751         hex
 752         default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
 753                                 SH_7751_SOLUTION_ENGINE
 754         default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
 755         default "0x00002000" if PAGE_SIZE_8KB
 756         default "0x00001000"
 757         help
 758           This sets the default offset of zero page.
 759
 760 config BOOT_LINK_OFFSET
 761         hex
 762         default "0x00210000" if SH_SHMIN
 763         default "0x00400000" if SH_CAYMAN
 764         default "0x00810000" if SH_7780_SOLUTION_ENGINE
 765         default "0x009e0000" if SH_TITAN
 766         default "0x01800000" if SH_SDK7780
 767         default "0x02000000" if SH_EDOSK7760
 768         default "0x00800000"
 769         help
 770           This option allows you to set the link address offset of the zImage.
 771           This can be useful if you are on a board which has a small amount of
 772           memory.
 773
 774 config ENTRY_OFFSET
 775         hex
 776         default "0x00001000" if PAGE_SIZE_4KB
 777         default "0x00002000" if PAGE_SIZE_8KB
 778         default "0x00004000" if PAGE_SIZE_16KB
 779         default "0x00010000" if PAGE_SIZE_64KB
 780         default "0x00000000"
 781
 782 config ROMIMAGE_MMCIF
 783         bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
 784         depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
 785         help
 786           Say Y here to include experimental MMCIF loading code in
 787           romImage. With this enabled it is possible to write the romImage
 788           kernel image to an MMC card and boot the kernel straight from
 789           the reset vector. At reset the processor Mask ROM will load the
 790           first part of the romImage which in turn loads the rest the kernel
 791           image to RAM using the MMCIF hardware block.
 792
 793 choice
 794         prompt "Kernel command line"
 795         optional
 796         default CMDLINE_OVERWRITE
 797         help
 798           Setting this option allows the kernel command line arguments
 799           to be set.
 800
 801 config CMDLINE_OVERWRITE
 802         bool "Overwrite bootloader kernel arguments"
 803         help
 804           Given string will overwrite any arguments passed in by
 805           a bootloader.
 806
 807 config CMDLINE_EXTEND
 808         bool "Extend bootloader kernel arguments"
 809         help
 810           Given string will be concatenated with arguments passed in
 811           by a bootloader.
 812
 813 endchoice
 814
 815 config CMDLINE
 816         string "Kernel command line arguments string"
 817         depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
 818         default "console=ttySC1,115200"
 819
 820 endmenu
 821
 822 menu "Bus options"
 823
 824 config SUPERHYWAY
 825         tristate "SuperHyway Bus support"
 826         depends on CPU_SUBTYPE_SH4_202
 827
 828 config MAPLE
 829         bool "Maple Bus support"
 830         depends on SH_DREAMCAST
 831         help
 832          The Maple Bus is SEGA's serial communication bus for peripherals
 833          on the Dreamcast. Without this bus support you won't be able to
 834          get your Dreamcast keyboard etc to work, so most users
 835          probably want to say 'Y' here, unless you are only using the
 836          Dreamcast with a serial line terminal or a remote network
 837          connection.
 838
 839 config PCI
 840         bool "PCI support"
 841         depends on SYS_SUPPORTS_PCI
 842         select PCI_DOMAINS
 843         help
 844           Find out whether you have a PCI motherboard. PCI is the name of a
 845           bus system, i.e. the way the CPU talks to the other stuff inside
 846           your box. If you have PCI, say Y, otherwise N.
 847
 848 config PCI_DOMAINS
 849         bool
 850
 851 source "drivers/pci/pcie/Kconfig"
 852
 853 source "drivers/pci/Kconfig"
 854
 855 source "drivers/pcmcia/Kconfig"
 856
 857 source "drivers/pci/hotplug/Kconfig"
 858
 859 endmenu
 860
 861 menu "Executable file formats"
 862
 863 source "fs/Kconfig.binfmt"
 864
 865 endmenu
 866
 867 menu "Power management options (EXPERIMENTAL)"
 868 depends on EXPERIMENTAL
 869
 870 source "kernel/power/Kconfig"
 871
 872 source "drivers/cpuidle/Kconfig"
 873
 874 endmenu
 875
 876 source "net/Kconfig"
 877
 878 source "drivers/Kconfig"
 879
 880 source "fs/Kconfig"
 881
 882 source "arch/sh/Kconfig.debug"
 883
 884 source "security/Kconfig"
 885
 886 source "crypto/Kconfig"
 887
 888 menuconfig VIRTUALIZATION
 889         bool "Virtualization"
 890         default n
 891         ---help---
 892           Say Y here to get to see options for using your Linux host to run other
 893           operating systems inside virtual machines (guests).
 894           This option alone does not add any kernel code.
 895
 896           If you say N, all options in this submenu will be skipped and disabled.
 897
 898 if VIRTUALIZATION
 899
 900 source drivers/virtio/Kconfig
 901
 902 endif # VIRTUALIZATION
 903
 904 source "lib/Kconfig"