arch/sh/Kconfig

   1 config SUPERH
   2         def_bool y
   3         select EXPERT
   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_XZ
  19         select HAVE_KERNEL_LZO
  20         select HAVE_SYSCALL_TRACEPOINTS
  21         select HAVE_REGS_AND_STACK_ACCESS_API
  22         select HAVE_GENERIC_HARDIRQS
  23         select HAVE_SPARSE_IRQ
  24         select RTC_LIB
  25         select GENERIC_ATOMIC64
  26         select GENERIC_HARDIRQS_NO_DEPRECATED
  27         select GENERIC_IRQ_SHOW
  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
  34 config 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 HAVE_MIXED_BREAKPOINTS_REGS
  48         select PERF_EVENTS
  49         select ARCH_HIBERNATION_POSSIBLE if MMU
  50         select SPARSE_IRQ
  51
  52 config SUPERH64
  53         def_bool ARCH = "sh64"
  54
  55 config ARCH_DEFCONFIG
  56         string
  57         default "arch/sh/configs/shx3_defconfig" if SUPERH32
  58         default "arch/sh/configs/cayman_defconfig" if SUPERH64
  59
  60 config RWSEM_GENERIC_SPINLOCK
  61         def_bool y
  62
  63 config RWSEM_XCHGADD_ALGORITHM
  64         bool
  65
  66 config GENERIC_BUG
  67         def_bool y
  68         depends on BUG && SUPERH32
  69
  70 config GENERIC_CSUM
  71         def_bool y
  72         depends on SUPERH64
  73
  74 config GENERIC_FIND_NEXT_BIT
  75         def_bool y
  76
  77 config GENERIC_FIND_BIT_LE
  78         def_bool y
  79
  80 config GENERIC_HWEIGHT
  81         def_bool y
  82
  83 config IRQ_PER_CPU
  84         def_bool y
  85
  86 config GENERIC_GPIO
  87         def_bool n
  88
  89 config GENERIC_CALIBRATE_DELAY
  90         bool
  91
  92 config GENERIC_IOMAP
  93         bool
  94
  95 config GENERIC_CLOCKEVENTS
  96         def_bool y
  97
  98 config GENERIC_CLOCKEVENTS_BROADCAST
  99         bool
 100
 101 config GENERIC_CMOS_UPDATE
 102         def_bool y
 103         depends on SH_SH03 || SH_DREAMCAST
 104
 105 config GENERIC_LOCKBREAK
 106         def_bool y
 107         depends on SMP && PREEMPT
 108
 109 config SYS_SUPPORTS_PM
 110         bool
 111         depends on !SMP
 112
 113 config ARCH_SUSPEND_POSSIBLE
 114         def_bool n
 115
 116 config ARCH_HIBERNATION_POSSIBLE
 117         def_bool n
 118
 119 config SYS_SUPPORTS_APM_EMULATION
 120         bool
 121         select ARCH_SUSPEND_POSSIBLE
 122
 123 config SYS_SUPPORTS_HUGETLBFS
 124         bool
 125
 126 config SYS_SUPPORTS_SMP
 127         bool
 128
 129 config SYS_SUPPORTS_NUMA
 130         bool
 131
 132 config SYS_SUPPORTS_PCI
 133         bool
 134
 135 config SYS_SUPPORTS_CMT
 136         bool
 137
 138 config SYS_SUPPORTS_MTU2
 139         bool
 140
 141 config SYS_SUPPORTS_TMU
 142         bool
 143
 144 config STACKTRACE_SUPPORT
 145         def_bool y
 146
 147 config LOCKDEP_SUPPORT
 148         def_bool y
 149
 150 config HAVE_LATENCYTOP_SUPPORT
 151         def_bool y
 152
 153 config ARCH_HAS_ILOG2_U32
 154         def_bool n
 155
 156 config ARCH_HAS_ILOG2_U64
 157         def_bool n
 158
 159 config ARCH_NO_VIRT_TO_BUS
 160         def_bool y
 161
 162 config ARCH_HAS_DEFAULT_IDLE
 163         def_bool y
 164
 165 config ARCH_HAS_CPU_IDLE_WAIT
 166         def_bool y
 167
 168 config NO_IOPORT
 169         def_bool !PCI
 170         depends on !SH_CAYMAN && !SH_SH4202_MICRODEV
 171
 172 config IO_TRAPPED
 173         bool
 174
 175 config DMA_COHERENT
 176         bool
 177
 178 config DMA_NONCOHERENT
 179         def_bool !DMA_COHERENT
 180
 181 config NEED_DMA_MAP_STATE
 182         def_bool DMA_NONCOHERENT
 183
 184 config NEED_SG_DMA_LENGTH
 185         def_bool y
 186
 187 source "init/Kconfig"
 188
 189 source "kernel/Kconfig.freezer"
 190
 191 menu "System type"
 192
 193 #
 194 # Processor families
 195 #
 196 config CPU_SH2
 197         bool
 198
 199 config CPU_SH2A
 200         bool
 201         select CPU_SH2
 202         select UNCACHED_MAPPING
 203
 204 config CPU_SH3
 205         bool
 206         select CPU_HAS_INTEVT
 207         select CPU_HAS_SR_RB
 208         select SYS_SUPPORTS_TMU
 209
 210 config CPU_SH4
 211         bool
 212         select CPU_HAS_INTEVT
 213         select CPU_HAS_SR_RB
 214         select CPU_HAS_FPU if !CPU_SH4AL_DSP
 215         select SYS_SUPPORTS_TMU
 216         select SYS_SUPPORTS_HUGETLBFS if MMU
 217
 218 config CPU_SH4A
 219         bool
 220         select CPU_SH4
 221
 222 config CPU_SH4AL_DSP
 223         bool
 224         select CPU_SH4A
 225         select CPU_HAS_DSP
 226
 227 config CPU_SH5
 228         bool
 229         select CPU_HAS_FPU
 230         select SYS_SUPPORTS_TMU
 231         select SYS_SUPPORTS_HUGETLBFS if MMU
 232
 233 config CPU_SHX2
 234         bool
 235
 236 config CPU_SHX3
 237         bool
 238         select DMA_COHERENT
 239         select SYS_SUPPORTS_SMP
 240         select SYS_SUPPORTS_NUMA
 241
 242 config ARCH_SHMOBILE
 243         bool
 244         select ARCH_SUSPEND_POSSIBLE
 245         select PM
 246         select PM_RUNTIME
 247
 248 config CPU_HAS_PMU
 249        depends on CPU_SH4 || CPU_SH4A
 250        default y
 251        bool
 252
 253 if SUPERH32
 254
 255 choice
 256         prompt "Processor sub-type selection"
 257
 258 #
 259 # Processor subtypes
 260 #
 261
 262 # SH-2 Processor Support
 263
 264 config CPU_SUBTYPE_SH7619
 265         bool "Support SH7619 processor"
 266         select CPU_SH2
 267         select SYS_SUPPORTS_CMT
 268
 269 # SH-2A Processor Support
 270
 271 config CPU_SUBTYPE_SH7201
 272         bool "Support SH7201 processor"
 273         select CPU_SH2A
 274         select CPU_HAS_FPU
 275         select SYS_SUPPORTS_MTU2
 276
 277 config CPU_SUBTYPE_SH7203
 278         bool "Support SH7203 processor"
 279         select CPU_SH2A
 280         select CPU_HAS_FPU
 281         select SYS_SUPPORTS_CMT
 282         select SYS_SUPPORTS_MTU2
 283         select ARCH_WANT_OPTIONAL_GPIOLIB
 284
 285 config CPU_SUBTYPE_SH7206
 286         bool "Support SH7206 processor"
 287         select CPU_SH2A
 288         select SYS_SUPPORTS_CMT
 289         select SYS_SUPPORTS_MTU2
 290
 291 config CPU_SUBTYPE_SH7263
 292         bool "Support SH7263 processor"
 293         select CPU_SH2A
 294         select CPU_HAS_FPU
 295         select SYS_SUPPORTS_CMT
 296         select SYS_SUPPORTS_MTU2
 297
 298 config CPU_SUBTYPE_MXG
 299         bool "Support MX-G processor"
 300         select CPU_SH2A
 301         select SYS_SUPPORTS_MTU2
 302         help
 303           Select MX-G if running on an R8A03022BG part.
 304
 305 # SH-3 Processor Support
 306
 307 config CPU_SUBTYPE_SH7705
 308         bool "Support SH7705 processor"
 309         select CPU_SH3
 310
 311 config CPU_SUBTYPE_SH7706
 312         bool "Support SH7706 processor"
 313         select CPU_SH3
 314         help
 315           Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
 316
 317 config CPU_SUBTYPE_SH7707
 318         bool "Support SH7707 processor"
 319         select CPU_SH3
 320         help
 321           Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
 322
 323 config CPU_SUBTYPE_SH7708
 324         bool "Support SH7708 processor"
 325         select CPU_SH3
 326         help
 327           Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
 328           if you have a 100 Mhz SH-3 HD6417708R CPU.
 329
 330 config CPU_SUBTYPE_SH7709
 331         bool "Support SH7709 processor"
 332         select CPU_SH3
 333         help
 334           Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
 335
 336 config CPU_SUBTYPE_SH7710
 337         bool "Support SH7710 processor"
 338         select CPU_SH3
 339         select CPU_HAS_DSP
 340         help
 341           Select SH7710 if you have a SH3-DSP SH7710 CPU.
 342
 343 config CPU_SUBTYPE_SH7712
 344         bool "Support SH7712 processor"
 345         select CPU_SH3
 346         select CPU_HAS_DSP
 347         help
 348           Select SH7712 if you have a SH3-DSP SH7712 CPU.
 349
 350 config CPU_SUBTYPE_SH7720
 351         bool "Support SH7720 processor"
 352         select CPU_SH3
 353         select CPU_HAS_DSP
 354         select SYS_SUPPORTS_CMT
 355         select ARCH_WANT_OPTIONAL_GPIOLIB
 356         select USB_ARCH_HAS_OHCI
 357         help
 358           Select SH7720 if you have a SH3-DSP SH7720 CPU.
 359
 360 config CPU_SUBTYPE_SH7721
 361         bool "Support SH7721 processor"
 362         select CPU_SH3
 363         select CPU_HAS_DSP
 364         select SYS_SUPPORTS_CMT
 365         select USB_ARCH_HAS_OHCI
 366         help
 367           Select SH7721 if you have a SH3-DSP SH7721 CPU.
 368
 369 # SH-4 Processor Support
 370
 371 config CPU_SUBTYPE_SH7750
 372         bool "Support SH7750 processor"
 373         select CPU_SH4
 374         help
 375           Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
 376
 377 config CPU_SUBTYPE_SH7091
 378         bool "Support SH7091 processor"
 379         select CPU_SH4
 380         help
 381           Select SH7091 if you have an SH-4 based Sega device (such as
 382           the Dreamcast, Naomi, and Naomi 2).
 383
 384 config CPU_SUBTYPE_SH7750R
 385         bool "Support SH7750R processor"
 386         select CPU_SH4
 387
 388 config CPU_SUBTYPE_SH7750S
 389         bool "Support SH7750S processor"
 390         select CPU_SH4
 391
 392 config CPU_SUBTYPE_SH7751
 393         bool "Support SH7751 processor"
 394         select CPU_SH4
 395         help
 396           Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
 397           or if you have a HD6417751R CPU.
 398
 399 config CPU_SUBTYPE_SH7751R
 400         bool "Support SH7751R processor"
 401         select CPU_SH4
 402
 403 config CPU_SUBTYPE_SH7760
 404         bool "Support SH7760 processor"
 405         select CPU_SH4
 406
 407 config CPU_SUBTYPE_SH4_202
 408         bool "Support SH4-202 processor"
 409         select CPU_SH4
 410
 411 # SH-4A Processor Support
 412
 413 config CPU_SUBTYPE_SH7723
 414         bool "Support SH7723 processor"
 415         select CPU_SH4A
 416         select CPU_SHX2
 417         select ARCH_SHMOBILE
 418         select ARCH_SPARSEMEM_ENABLE
 419         select SYS_SUPPORTS_CMT
 420         select ARCH_WANT_OPTIONAL_GPIOLIB
 421         help
 422           Select SH7723 if you have an SH-MobileR2 CPU.
 423
 424 config CPU_SUBTYPE_SH7724
 425         bool "Support SH7724 processor"
 426         select CPU_SH4A
 427         select CPU_SHX2
 428         select ARCH_SHMOBILE
 429         select ARCH_SPARSEMEM_ENABLE
 430         select SYS_SUPPORTS_CMT
 431         select ARCH_WANT_OPTIONAL_GPIOLIB
 432         help
 433           Select SH7724 if you have an SH-MobileR2R CPU.
 434
 435 config CPU_SUBTYPE_SH7757
 436         bool "Support SH7757 processor"
 437         select CPU_SH4A
 438         select CPU_SHX2
 439         select ARCH_WANT_OPTIONAL_GPIOLIB
 440         select USB_ARCH_HAS_OHCI
 441         select USB_ARCH_HAS_EHCI
 442         help
 443           Select SH7757 if you have a SH4A SH7757 CPU.
 444
 445 config CPU_SUBTYPE_SH7763
 446         bool "Support SH7763 processor"
 447         select CPU_SH4A
 448         select USB_ARCH_HAS_OHCI
 449         help
 450           Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
 451
 452 config CPU_SUBTYPE_SH7770
 453         bool "Support SH7770 processor"
 454         select CPU_SH4A
 455
 456 config CPU_SUBTYPE_SH7780
 457         bool "Support SH7780 processor"
 458         select CPU_SH4A
 459
 460 config CPU_SUBTYPE_SH7785
 461         bool "Support SH7785 processor"
 462         select CPU_SH4A
 463         select CPU_SHX2
 464         select ARCH_SPARSEMEM_ENABLE
 465         select SYS_SUPPORTS_NUMA
 466         select ARCH_WANT_OPTIONAL_GPIOLIB
 467
 468 config CPU_SUBTYPE_SH7786
 469         bool "Support SH7786 processor"
 470         select CPU_SH4A
 471         select CPU_SHX3
 472         select CPU_HAS_PTEAEX
 473         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 474         select ARCH_WANT_OPTIONAL_GPIOLIB
 475         select USB_ARCH_HAS_OHCI
 476         select USB_ARCH_HAS_EHCI
 477
 478 config CPU_SUBTYPE_SHX3
 479         bool "Support SH-X3 processor"
 480         select CPU_SH4A
 481         select CPU_SHX3
 482         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 483         select ARCH_REQUIRE_GPIOLIB
 484
 485 # SH4AL-DSP Processor Support
 486
 487 config CPU_SUBTYPE_SH7343
 488         bool "Support SH7343 processor"
 489         select CPU_SH4AL_DSP
 490         select ARCH_SHMOBILE
 491         select SYS_SUPPORTS_CMT
 492
 493 config CPU_SUBTYPE_SH7722
 494         bool "Support SH7722 processor"
 495         select CPU_SH4AL_DSP
 496         select CPU_SHX2
 497         select ARCH_SHMOBILE
 498         select ARCH_SPARSEMEM_ENABLE
 499         select SYS_SUPPORTS_NUMA
 500         select SYS_SUPPORTS_CMT
 501         select ARCH_WANT_OPTIONAL_GPIOLIB
 502
 503 config CPU_SUBTYPE_SH7366
 504         bool "Support SH7366 processor"
 505         select CPU_SH4AL_DSP
 506         select CPU_SHX2
 507         select ARCH_SHMOBILE
 508         select ARCH_SPARSEMEM_ENABLE
 509         select SYS_SUPPORTS_NUMA
 510         select SYS_SUPPORTS_CMT
 511
 512 endchoice
 513
 514 endif
 515
 516 if SUPERH64
 517
 518 choice
 519         prompt "Processor sub-type selection"
 520
 521 # SH-5 Processor Support
 522
 523 config CPU_SUBTYPE_SH5_101
 524         bool "Support SH5-101 processor"
 525         select CPU_SH5
 526
 527 config CPU_SUBTYPE_SH5_103
 528         bool "Support SH5-103 processor"
 529         select CPU_SH5
 530
 531 endchoice
 532
 533 endif
 534
 535 source "arch/sh/mm/Kconfig"
 536
 537 source "arch/sh/Kconfig.cpu"
 538
 539 source "arch/sh/boards/Kconfig"
 540
 541 menu "Timer and clock configuration"
 542
 543 config SH_TIMER_TMU
 544         bool "TMU timer driver"
 545         depends on SYS_SUPPORTS_TMU
 546         default y
 547         help
 548           This enables the build of the TMU timer driver.
 549
 550 config SH_TIMER_CMT
 551         bool "CMT timer driver"
 552         depends on SYS_SUPPORTS_CMT
 553         default y
 554         help
 555           This enables build of the CMT timer driver.
 556
 557 config SH_TIMER_MTU2
 558         bool "MTU2 timer driver"
 559         depends on SYS_SUPPORTS_MTU2
 560         default y
 561         help
 562           This enables build of the MTU2 timer driver.
 563
 564 config SH_PCLK_FREQ
 565         int "Peripheral clock frequency (in Hz)"
 566         depends on SH_CLK_CPG_LEGACY
 567         default "31250000" if CPU_SUBTYPE_SH7619
 568         default "33333333" if CPU_SUBTYPE_SH7770 || \
 569                               CPU_SUBTYPE_SH7760 || \
 570                               CPU_SUBTYPE_SH7705 || \
 571                               CPU_SUBTYPE_SH7203 || \
 572                               CPU_SUBTYPE_SH7206 || \
 573                               CPU_SUBTYPE_SH7263 || \
 574                               CPU_SUBTYPE_MXG
 575         default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
 576         default "66000000" if CPU_SUBTYPE_SH4_202
 577         default "50000000"
 578         help
 579           This option is used to specify the peripheral clock frequency.
 580           This is necessary for determining the reference clock value on
 581           platforms lacking an RTC.
 582
 583 config SH_CLK_CPG
 584         def_bool y
 585
 586 config SH_CLK_CPG_LEGACY
 587         depends on SH_CLK_CPG
 588         def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
 589                       !CPU_SHX3 && !CPU_SUBTYPE_SH7757
 590
 591 source "kernel/time/Kconfig"
 592
 593 endmenu
 594
 595 menu "CPU Frequency scaling"
 596
 597 source "drivers/cpufreq/Kconfig"
 598
 599 config SH_CPU_FREQ
 600         tristate "SuperH CPU Frequency driver"
 601         depends on CPU_FREQ
 602         select CPU_FREQ_TABLE
 603         help
 604           This adds the cpufreq driver for SuperH. Any CPU that supports
 605           clock rate rounding through the clock framework can use this
 606           driver. While it will make the kernel slightly larger, this is
 607           harmless for CPUs that don't support rate rounding. The driver
 608           will also generate a notice in the boot log before disabling
 609           itself if the CPU in question is not capable of rate rounding.
 610
 611           For details, take a look at <file:Documentation/cpu-freq>.
 612
 613           If unsure, say N.
 614
 615 endmenu
 616
 617 source "arch/sh/drivers/Kconfig"
 618
 619 endmenu
 620
 621 menu "Kernel features"
 622
 623 source kernel/Kconfig.hz
 624
 625 config KEXEC
 626         bool "kexec system call (EXPERIMENTAL)"
 627         depends on SUPERH32 && EXPERIMENTAL && MMU
 628         help
 629           kexec is a system call that implements the ability to shutdown your
 630           current kernel, and to start another kernel.  It is like a reboot
 631           but it is independent of the system firmware.  And like a reboot
 632           you can start any kernel with it, not just Linux.
 633
 634           The name comes from the similarity to the exec system call.
 635
 636           It is an ongoing process to be certain the hardware in a machine
 637           is properly shutdown, so do not be surprised if this code does not
 638           initially work for you.  It may help to enable device hotplugging
 639           support.  As of this writing the exact hardware interface is
 640           strongly in flux, so no good recommendation can be made.
 641
 642 config CRASH_DUMP
 643         bool "kernel crash dumps (EXPERIMENTAL)"
 644         depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
 645         help
 646           Generate crash dump after being started by kexec.
 647           This should be normally only set in special crash dump kernels
 648           which are loaded in the main kernel with kexec-tools into
 649           a specially reserved region and then later executed after
 650           a crash by kdump/kexec. The crash dump kernel must be compiled
 651           to a memory address not used by the main kernel using
 652           MEMORY_START.
 653
 654           For more details see Documentation/kdump/kdump.txt
 655
 656 config KEXEC_JUMP
 657         bool "kexec jump (EXPERIMENTAL)"
 658         depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
 659         help
 660           Jump between original kernel and kexeced kernel and invoke
 661           code via KEXEC
 662
 663 config SECCOMP
 664         bool "Enable seccomp to safely compute untrusted bytecode"
 665         depends on PROC_FS
 666         help
 667           This kernel feature is useful for number crunching applications
 668           that may need to compute untrusted bytecode during their
 669           execution. By using pipes or other transports made available to
 670           the process as file descriptors supporting the read/write
 671           syscalls, it's possible to isolate those applications in
 672           their own address space using seccomp. Once seccomp is
 673           enabled via prctl, it cannot be disabled and the task is only
 674           allowed to execute a few safe syscalls defined by each seccomp
 675           mode.
 676
 677           If unsure, say N.
 678
 679 config SMP
 680         bool "Symmetric multi-processing support"
 681         depends on SYS_SUPPORTS_SMP
 682         select USE_GENERIC_SMP_HELPERS
 683         ---help---
 684           This enables support for systems with more than one CPU. If you have
 685           a system with only one CPU, like most personal computers, say N. If
 686           you have a system with more than one CPU, say Y.
 687
 688           If you say N here, the kernel will run on single and multiprocessor
 689           machines, but will use only one CPU of a multiprocessor machine. If
 690           you say Y here, the kernel will run on many, but not all,
 691           singleprocessor machines. On a singleprocessor machine, the kernel
 692           will run faster if you say N here.
 693
 694           People using multiprocessor machines who say Y here should also say
 695           Y to "Enhanced Real Time Clock Support", below.
 696
 697           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 698           available at <http://www.tldp.org/docs.html#howto>.
 699
 700           If you don't know what to do here, say N.
 701
 702 config NR_CPUS
 703         int "Maximum number of CPUs (2-32)"
 704         range 2 32
 705         depends on SMP
 706         default "4" if CPU_SUBTYPE_SHX3
 707         default "2"
 708         help
 709           This allows you to specify the maximum number of CPUs which this
 710           kernel will support.  The maximum supported value is 32 and the
 711           minimum value which makes sense is 2.
 712
 713           This is purely to save memory - each supported CPU adds
 714           approximately eight kilobytes to the kernel image.
 715
 716 config HOTPLUG_CPU
 717         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 718         depends on SMP && HOTPLUG && EXPERIMENTAL
 719         help
 720           Say Y here to experiment with turning CPUs off and on.  CPUs
 721           can be controlled through /sys/devices/system/cpu.
 722
 723 source "kernel/Kconfig.preempt"
 724
 725 config GUSA
 726         def_bool y
 727         depends on !SMP && SUPERH32
 728         help
 729           This enables support for gUSA (general UserSpace Atomicity).
 730           This is the default implementation for both UP and non-ll/sc
 731           CPUs, and is used by the libc, amongst others.
 732
 733           For additional information, design information can be found
 734           in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
 735
 736           This should only be disabled for special cases where alternate
 737           atomicity implementations exist.
 738
 739 config GUSA_RB
 740         bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
 741         depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
 742         help
 743           Enabling this option will allow the kernel to implement some
 744           atomic operations using a software implementation of load-locked/
 745           store-conditional (LLSC). On machines which do not have hardware
 746           LLSC, this should be more efficient than the other alternative of
 747           disabling interrupts around the atomic sequence.
 748
 749 config HW_PERF_EVENTS
 750         bool "Enable hardware performance counter support for perf events"
 751         depends on PERF_EVENTS && CPU_HAS_PMU
 752         default y
 753         help
 754           Enable hardware performance counter support for perf events. If
 755           disabled, perf events will use software events only.
 756
 757 source "drivers/sh/Kconfig"
 758
 759 endmenu
 760
 761 menu "Boot options"
 762
 763 config ZERO_PAGE_OFFSET
 764         hex
 765         default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
 766                                 SH_7751_SOLUTION_ENGINE
 767         default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
 768         default "0x00002000" if PAGE_SIZE_8KB
 769         default "0x00001000"
 770         help
 771           This sets the default offset of zero page.
 772
 773 config BOOT_LINK_OFFSET
 774         hex
 775         default "0x00210000" if SH_SHMIN
 776         default "0x00400000" if SH_CAYMAN
 777         default "0x00810000" if SH_7780_SOLUTION_ENGINE
 778         default "0x009e0000" if SH_TITAN
 779         default "0x01800000" if SH_SDK7780
 780         default "0x02000000" if SH_EDOSK7760
 781         default "0x00800000"
 782         help
 783           This option allows you to set the link address offset of the zImage.
 784           This can be useful if you are on a board which has a small amount of
 785           memory.
 786
 787 config ENTRY_OFFSET
 788         hex
 789         default "0x00001000" if PAGE_SIZE_4KB
 790         default "0x00002000" if PAGE_SIZE_8KB
 791         default "0x00004000" if PAGE_SIZE_16KB
 792         default "0x00010000" if PAGE_SIZE_64KB
 793         default "0x00000000"
 794
 795 config ROMIMAGE_MMCIF
 796         bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
 797         depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
 798         help
 799           Say Y here to include experimental MMCIF loading code in
 800           romImage. With this enabled it is possible to write the romImage
 801           kernel image to an MMC card and boot the kernel straight from
 802           the reset vector. At reset the processor Mask ROM will load the
 803           first part of the romImage which in turn loads the rest the kernel
 804           image to RAM using the MMCIF hardware block.
 805
 806 choice
 807         prompt "Kernel command line"
 808         optional
 809         default CMDLINE_OVERWRITE
 810         help
 811           Setting this option allows the kernel command line arguments
 812           to be set.
 813
 814 config CMDLINE_OVERWRITE
 815         bool "Overwrite bootloader kernel arguments"
 816         help
 817           Given string will overwrite any arguments passed in by
 818           a bootloader.
 819
 820 config CMDLINE_EXTEND
 821         bool "Extend bootloader kernel arguments"
 822         help
 823           Given string will be concatenated with arguments passed in
 824           by a bootloader.
 825
 826 endchoice
 827
 828 config CMDLINE
 829         string "Kernel command line arguments string"
 830         depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
 831         default "console=ttySC1,115200"
 832
 833 endmenu
 834
 835 menu "Bus options"
 836
 837 config SUPERHYWAY
 838         tristate "SuperHyway Bus support"
 839         depends on CPU_SUBTYPE_SH4_202
 840
 841 config MAPLE
 842         bool "Maple Bus support"
 843         depends on SH_DREAMCAST
 844         help
 845          The Maple Bus is SEGA's serial communication bus for peripherals
 846          on the Dreamcast. Without this bus support you won't be able to
 847          get your Dreamcast keyboard etc to work, so most users
 848          probably want to say 'Y' here, unless you are only using the
 849          Dreamcast with a serial line terminal or a remote network
 850          connection.
 851
 852 config PCI
 853         bool "PCI support"
 854         depends on SYS_SUPPORTS_PCI
 855         select PCI_DOMAINS
 856         help
 857           Find out whether you have a PCI motherboard. PCI is the name of a
 858           bus system, i.e. the way the CPU talks to the other stuff inside
 859           your box. If you have PCI, say Y, otherwise N.
 860
 861 config PCI_DOMAINS
 862         bool
 863
 864 source "drivers/pci/pcie/Kconfig"
 865
 866 source "drivers/pci/Kconfig"
 867
 868 source "drivers/pcmcia/Kconfig"
 869
 870 source "drivers/pci/hotplug/Kconfig"
 871
 872 endmenu
 873
 874 menu "Executable file formats"
 875
 876 source "fs/Kconfig.binfmt"
 877
 878 endmenu
 879
 880 menu "Power management options (EXPERIMENTAL)"
 881 depends on EXPERIMENTAL
 882
 883 source "kernel/power/Kconfig"
 884
 885 source "drivers/cpuidle/Kconfig"
 886
 887 endmenu
 888
 889 source "net/Kconfig"
 890
 891 source "drivers/Kconfig"
 892
 893 source "fs/Kconfig"
 894
 895 source "arch/sh/Kconfig.debug"
 896
 897 source "security/Kconfig"
 898
 899 source "crypto/Kconfig"
 900
 901 menuconfig VIRTUALIZATION
 902         bool "Virtualization"
 903         default n
 904         ---help---
 905           Say Y here to get to see options for using your Linux host to run other
 906           operating systems inside virtual machines (guests).
 907           This option alone does not add any kernel code.
 908
 909           If you say N, all options in this submenu will be skipped and disabled.
 910
 911 if VIRTUALIZATION
 912
 913 source drivers/virtio/Kconfig
 914
 915 endif # VIRTUALIZATION
 916
 917 source "lib/Kconfig"