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_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         # Support the deprecated APIs until MFD and GPIOLIB catch up.
  26         select GENERIC_HARDIRQS_NO_DEPRECATED if !MFD_SUPPORT && !GPIOLIB
  27         help
  28           The SuperH is a RISC processor targeted for use in embedded systems
  29           and consumer electronics; it was also used in the Sega Dreamcast
  30           gaming console.  The SuperH port has a home page at
  31           <http://www.linux-sh.org/>.
  32
  33 config SUPERH32
  34         def_bool ARCH = "sh"
  35         select HAVE_KPROBES
  36         select HAVE_KRETPROBES
  37         select HAVE_IOREMAP_PROT if MMU && !X2TLB
  38         select HAVE_FUNCTION_TRACER
  39         select HAVE_FTRACE_MCOUNT_RECORD
  40         select HAVE_DYNAMIC_FTRACE
  41         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  42         select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
  43         select HAVE_FUNCTION_GRAPH_TRACER
  44         select HAVE_ARCH_KGDB
  45         select HAVE_HW_BREAKPOINT
  46         select HAVE_MIXED_BREAKPOINTS_REGS
  47         select PERF_EVENTS
  48         select ARCH_HIBERNATION_POSSIBLE if MMU
  49         select SPARSE_IRQ
  50
  51 config SUPERH64
  52         def_bool ARCH = "sh64"
  53
  54 config ARCH_DEFCONFIG
  55         string
  56         default "arch/sh/configs/shx3_defconfig" if SUPERH32
  57         default "arch/sh/configs/cayman_defconfig" if SUPERH64
  58
  59 config RWSEM_GENERIC_SPINLOCK
  60         def_bool y
  61
  62 config RWSEM_XCHGADD_ALGORITHM
  63         bool
  64
  65 config GENERIC_BUG
  66         def_bool y
  67         depends on BUG && SUPERH32
  68
  69 config GENERIC_CSUM
  70         def_bool y
  71         depends on SUPERH64
  72
  73 config GENERIC_FIND_NEXT_BIT
  74         def_bool y
  75
  76 config GENERIC_HWEIGHT
  77         def_bool y
  78
  79 config IRQ_PER_CPU
  80         def_bool y
  81
  82 config GENERIC_GPIO
  83         def_bool n
  84
  85 config GENERIC_CALIBRATE_DELAY
  86         bool
  87
  88 config GENERIC_IOMAP
  89         bool
  90
  91 config GENERIC_CLOCKEVENTS
  92         def_bool y
  93
  94 config GENERIC_CLOCKEVENTS_BROADCAST
  95         bool
  96
  97 config GENERIC_CMOS_UPDATE
  98         def_bool y
  99         depends on SH_SH03 || SH_DREAMCAST
 100
 101 config GENERIC_LOCKBREAK
 102         def_bool y
 103         depends on SMP && PREEMPT
 104
 105 config SYS_SUPPORTS_PM
 106         bool
 107         depends on !SMP
 108
 109 config ARCH_SUSPEND_POSSIBLE
 110         def_bool n
 111
 112 config ARCH_HIBERNATION_POSSIBLE
 113         def_bool n
 114
 115 config SYS_SUPPORTS_APM_EMULATION
 116         bool
 117         select ARCH_SUSPEND_POSSIBLE
 118
 119 config SYS_SUPPORTS_HUGETLBFS
 120         bool
 121
 122 config SYS_SUPPORTS_SMP
 123         bool
 124
 125 config SYS_SUPPORTS_NUMA
 126         bool
 127
 128 config SYS_SUPPORTS_PCI
 129         bool
 130
 131 config SYS_SUPPORTS_CMT
 132         bool
 133
 134 config SYS_SUPPORTS_MTU2
 135         bool
 136
 137 config SYS_SUPPORTS_TMU
 138         bool
 139
 140 config STACKTRACE_SUPPORT
 141         def_bool y
 142
 143 config LOCKDEP_SUPPORT
 144         def_bool y
 145
 146 config HAVE_LATENCYTOP_SUPPORT
 147         def_bool y
 148
 149 config ARCH_HAS_ILOG2_U32
 150         def_bool n
 151
 152 config ARCH_HAS_ILOG2_U64
 153         def_bool n
 154
 155 config ARCH_NO_VIRT_TO_BUS
 156         def_bool y
 157
 158 config ARCH_HAS_DEFAULT_IDLE
 159         def_bool y
 160
 161 config ARCH_HAS_CPU_IDLE_WAIT
 162         def_bool y
 163
 164 config NO_IOPORT
 165         def_bool !PCI
 166         depends on !SH_CAYMAN && !SH_SH4202_MICRODEV
 167
 168 config IO_TRAPPED
 169         bool
 170
 171 config DMA_COHERENT
 172         bool
 173
 174 config DMA_NONCOHERENT
 175         def_bool !DMA_COHERENT
 176
 177 config NEED_DMA_MAP_STATE
 178         def_bool DMA_NONCOHERENT
 179
 180 config NEED_SG_DMA_LENGTH
 181         def_bool y
 182
 183 source "init/Kconfig"
 184
 185 source "kernel/Kconfig.freezer"
 186
 187 menu "System type"
 188
 189 #
 190 # Processor families
 191 #
 192 config CPU_SH2
 193         bool
 194
 195 config CPU_SH2A
 196         bool
 197         select CPU_SH2
 198         select UNCACHED_MAPPING
 199
 200 config CPU_SH3
 201         bool
 202         select CPU_HAS_INTEVT
 203         select CPU_HAS_SR_RB
 204         select SYS_SUPPORTS_TMU
 205
 206 config CPU_SH4
 207         bool
 208         select CPU_HAS_INTEVT
 209         select CPU_HAS_SR_RB
 210         select CPU_HAS_FPU if !CPU_SH4AL_DSP
 211         select SYS_SUPPORTS_TMU
 212         select SYS_SUPPORTS_HUGETLBFS if MMU
 213
 214 config CPU_SH4A
 215         bool
 216         select CPU_SH4
 217
 218 config CPU_SH4AL_DSP
 219         bool
 220         select CPU_SH4A
 221         select CPU_HAS_DSP
 222
 223 config CPU_SH5
 224         bool
 225         select CPU_HAS_FPU
 226         select SYS_SUPPORTS_TMU
 227         select SYS_SUPPORTS_HUGETLBFS if MMU
 228
 229 config CPU_SHX2
 230         bool
 231
 232 config CPU_SHX3
 233         bool
 234         select DMA_COHERENT
 235         select SYS_SUPPORTS_SMP
 236         select SYS_SUPPORTS_NUMA
 237
 238 config ARCH_SHMOBILE
 239         bool
 240         select ARCH_SUSPEND_POSSIBLE
 241         select PM
 242         select PM_RUNTIME
 243
 244 config CPU_HAS_PMU
 245        depends on CPU_SH4 || CPU_SH4A
 246        default y
 247        bool
 248
 249 if SUPERH32
 250
 251 choice
 252         prompt "Processor sub-type selection"
 253
 254 #
 255 # Processor subtypes
 256 #
 257
 258 # SH-2 Processor Support
 259
 260 config CPU_SUBTYPE_SH7619
 261         bool "Support SH7619 processor"
 262         select CPU_SH2
 263         select SYS_SUPPORTS_CMT
 264
 265 # SH-2A Processor Support
 266
 267 config CPU_SUBTYPE_SH7201
 268         bool "Support SH7201 processor"
 269         select CPU_SH2A
 270         select CPU_HAS_FPU
 271         select SYS_SUPPORTS_MTU2
 272
 273 config CPU_SUBTYPE_SH7203
 274         bool "Support SH7203 processor"
 275         select CPU_SH2A
 276         select CPU_HAS_FPU
 277         select SYS_SUPPORTS_CMT
 278         select SYS_SUPPORTS_MTU2
 279         select ARCH_WANT_OPTIONAL_GPIOLIB
 280
 281 config CPU_SUBTYPE_SH7206
 282         bool "Support SH7206 processor"
 283         select CPU_SH2A
 284         select SYS_SUPPORTS_CMT
 285         select SYS_SUPPORTS_MTU2
 286
 287 config CPU_SUBTYPE_SH7263
 288         bool "Support SH7263 processor"
 289         select CPU_SH2A
 290         select CPU_HAS_FPU
 291         select SYS_SUPPORTS_CMT
 292         select SYS_SUPPORTS_MTU2
 293
 294 config CPU_SUBTYPE_MXG
 295         bool "Support MX-G processor"
 296         select CPU_SH2A
 297         select SYS_SUPPORTS_MTU2
 298         help
 299           Select MX-G if running on an R8A03022BG part.
 300
 301 # SH-3 Processor Support
 302
 303 config CPU_SUBTYPE_SH7705
 304         bool "Support SH7705 processor"
 305         select CPU_SH3
 306
 307 config CPU_SUBTYPE_SH7706
 308         bool "Support SH7706 processor"
 309         select CPU_SH3
 310         help
 311           Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
 312
 313 config CPU_SUBTYPE_SH7707
 314         bool "Support SH7707 processor"
 315         select CPU_SH3
 316         help
 317           Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
 318
 319 config CPU_SUBTYPE_SH7708
 320         bool "Support SH7708 processor"
 321         select CPU_SH3
 322         help
 323           Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
 324           if you have a 100 Mhz SH-3 HD6417708R CPU.
 325
 326 config CPU_SUBTYPE_SH7709
 327         bool "Support SH7709 processor"
 328         select CPU_SH3
 329         help
 330           Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
 331
 332 config CPU_SUBTYPE_SH7710
 333         bool "Support SH7710 processor"
 334         select CPU_SH3
 335         select CPU_HAS_DSP
 336         help
 337           Select SH7710 if you have a SH3-DSP SH7710 CPU.
 338
 339 config CPU_SUBTYPE_SH7712
 340         bool "Support SH7712 processor"
 341         select CPU_SH3
 342         select CPU_HAS_DSP
 343         help
 344           Select SH7712 if you have a SH3-DSP SH7712 CPU.
 345
 346 config CPU_SUBTYPE_SH7720
 347         bool "Support SH7720 processor"
 348         select CPU_SH3
 349         select CPU_HAS_DSP
 350         select SYS_SUPPORTS_CMT
 351         select ARCH_WANT_OPTIONAL_GPIOLIB
 352         select USB_ARCH_HAS_OHCI
 353         help
 354           Select SH7720 if you have a SH3-DSP SH7720 CPU.
 355
 356 config CPU_SUBTYPE_SH7721
 357         bool "Support SH7721 processor"
 358         select CPU_SH3
 359         select CPU_HAS_DSP
 360         select SYS_SUPPORTS_CMT
 361         select USB_ARCH_HAS_OHCI
 362         help
 363           Select SH7721 if you have a SH3-DSP SH7721 CPU.
 364
 365 # SH-4 Processor Support
 366
 367 config CPU_SUBTYPE_SH7750
 368         bool "Support SH7750 processor"
 369         select CPU_SH4
 370         help
 371           Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
 372
 373 config CPU_SUBTYPE_SH7091
 374         bool "Support SH7091 processor"
 375         select CPU_SH4
 376         help
 377           Select SH7091 if you have an SH-4 based Sega device (such as
 378           the Dreamcast, Naomi, and Naomi 2).
 379
 380 config CPU_SUBTYPE_SH7750R
 381         bool "Support SH7750R processor"
 382         select CPU_SH4
 383
 384 config CPU_SUBTYPE_SH7750S
 385         bool "Support SH7750S processor"
 386         select CPU_SH4
 387
 388 config CPU_SUBTYPE_SH7751
 389         bool "Support SH7751 processor"
 390         select CPU_SH4
 391         help
 392           Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
 393           or if you have a HD6417751R CPU.
 394
 395 config CPU_SUBTYPE_SH7751R
 396         bool "Support SH7751R processor"
 397         select CPU_SH4
 398
 399 config CPU_SUBTYPE_SH7760
 400         bool "Support SH7760 processor"
 401         select CPU_SH4
 402
 403 config CPU_SUBTYPE_SH4_202
 404         bool "Support SH4-202 processor"
 405         select CPU_SH4
 406
 407 # SH-4A Processor Support
 408
 409 config CPU_SUBTYPE_SH7723
 410         bool "Support SH7723 processor"
 411         select CPU_SH4A
 412         select CPU_SHX2
 413         select ARCH_SHMOBILE
 414         select ARCH_SPARSEMEM_ENABLE
 415         select SYS_SUPPORTS_CMT
 416         select ARCH_WANT_OPTIONAL_GPIOLIB
 417         help
 418           Select SH7723 if you have an SH-MobileR2 CPU.
 419
 420 config CPU_SUBTYPE_SH7724
 421         bool "Support SH7724 processor"
 422         select CPU_SH4A
 423         select CPU_SHX2
 424         select ARCH_SHMOBILE
 425         select ARCH_SPARSEMEM_ENABLE
 426         select SYS_SUPPORTS_CMT
 427         select ARCH_WANT_OPTIONAL_GPIOLIB
 428         help
 429           Select SH7724 if you have an SH-MobileR2R CPU.
 430
 431 config CPU_SUBTYPE_SH7757
 432         bool "Support SH7757 processor"
 433         select CPU_SH4A
 434         select CPU_SHX2
 435         select ARCH_WANT_OPTIONAL_GPIOLIB
 436         help
 437           Select SH7757 if you have a SH4A SH7757 CPU.
 438
 439 config CPU_SUBTYPE_SH7763
 440         bool "Support SH7763 processor"
 441         select CPU_SH4A
 442         select USB_ARCH_HAS_OHCI
 443         help
 444           Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
 445
 446 config CPU_SUBTYPE_SH7770
 447         bool "Support SH7770 processor"
 448         select CPU_SH4A
 449
 450 config CPU_SUBTYPE_SH7780
 451         bool "Support SH7780 processor"
 452         select CPU_SH4A
 453
 454 config CPU_SUBTYPE_SH7785
 455         bool "Support SH7785 processor"
 456         select CPU_SH4A
 457         select CPU_SHX2
 458         select ARCH_SPARSEMEM_ENABLE
 459         select SYS_SUPPORTS_NUMA
 460         select ARCH_WANT_OPTIONAL_GPIOLIB
 461
 462 config CPU_SUBTYPE_SH7786
 463         bool "Support SH7786 processor"
 464         select CPU_SH4A
 465         select CPU_SHX3
 466         select CPU_HAS_PTEAEX
 467         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 468         select ARCH_WANT_OPTIONAL_GPIOLIB
 469         select USB_ARCH_HAS_OHCI
 470         select USB_ARCH_HAS_EHCI
 471
 472 config CPU_SUBTYPE_SHX3
 473         bool "Support SH-X3 processor"
 474         select CPU_SH4A
 475         select CPU_SHX3
 476         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 477         select ARCH_REQUIRE_GPIOLIB
 478
 479 # SH4AL-DSP Processor Support
 480
 481 config CPU_SUBTYPE_SH7343
 482         bool "Support SH7343 processor"
 483         select CPU_SH4AL_DSP
 484         select ARCH_SHMOBILE
 485         select SYS_SUPPORTS_CMT
 486
 487 config CPU_SUBTYPE_SH7722
 488         bool "Support SH7722 processor"
 489         select CPU_SH4AL_DSP
 490         select CPU_SHX2
 491         select ARCH_SHMOBILE
 492         select ARCH_SPARSEMEM_ENABLE
 493         select SYS_SUPPORTS_NUMA
 494         select SYS_SUPPORTS_CMT
 495         select ARCH_WANT_OPTIONAL_GPIOLIB
 496
 497 config CPU_SUBTYPE_SH7366
 498         bool "Support SH7366 processor"
 499         select CPU_SH4AL_DSP
 500         select CPU_SHX2
 501         select ARCH_SHMOBILE
 502         select ARCH_SPARSEMEM_ENABLE
 503         select SYS_SUPPORTS_NUMA
 504         select SYS_SUPPORTS_CMT
 505
 506 endchoice
 507
 508 endif
 509
 510 if SUPERH64
 511
 512 choice
 513         prompt "Processor sub-type selection"
 514
 515 # SH-5 Processor Support
 516
 517 config CPU_SUBTYPE_SH5_101
 518         bool "Support SH5-101 processor"
 519         select CPU_SH5
 520
 521 config CPU_SUBTYPE_SH5_103
 522         bool "Support SH5-103 processor"
 523         select CPU_SH5
 524
 525 endchoice
 526
 527 endif
 528
 529 source "arch/sh/mm/Kconfig"
 530
 531 source "arch/sh/Kconfig.cpu"
 532
 533 source "arch/sh/boards/Kconfig"
 534
 535 menu "Timer and clock configuration"
 536
 537 config SH_TIMER_TMU
 538         bool "TMU timer driver"
 539         depends on SYS_SUPPORTS_TMU
 540         default y
 541         help
 542           This enables the build of the TMU timer driver.
 543
 544 config SH_TIMER_CMT
 545         bool "CMT timer driver"
 546         depends on SYS_SUPPORTS_CMT
 547         default y
 548         help
 549           This enables build of the CMT timer driver.
 550
 551 config SH_TIMER_MTU2
 552         bool "MTU2 timer driver"
 553         depends on SYS_SUPPORTS_MTU2
 554         default y
 555         help
 556           This enables build of the MTU2 timer driver.
 557
 558 config SH_PCLK_FREQ
 559         int "Peripheral clock frequency (in Hz)"
 560         depends on SH_CLK_CPG_LEGACY
 561         default "31250000" if CPU_SUBTYPE_SH7619
 562         default "33333333" if CPU_SUBTYPE_SH7770 || \
 563                               CPU_SUBTYPE_SH7760 || \
 564                               CPU_SUBTYPE_SH7705 || \
 565                               CPU_SUBTYPE_SH7203 || \
 566                               CPU_SUBTYPE_SH7206 || \
 567                               CPU_SUBTYPE_SH7263 || \
 568                               CPU_SUBTYPE_MXG
 569         default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
 570         default "66000000" if CPU_SUBTYPE_SH4_202
 571         default "50000000"
 572         help
 573           This option is used to specify the peripheral clock frequency.
 574           This is necessary for determining the reference clock value on
 575           platforms lacking an RTC.
 576
 577 config SH_CLK_CPG
 578         def_bool y
 579
 580 config SH_CLK_CPG_LEGACY
 581         depends on SH_CLK_CPG
 582         def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
 583                       !CPU_SHX3 && !CPU_SUBTYPE_SH7757
 584
 585 source "kernel/time/Kconfig"
 586
 587 endmenu
 588
 589 menu "CPU Frequency scaling"
 590
 591 source "drivers/cpufreq/Kconfig"
 592
 593 config SH_CPU_FREQ
 594         tristate "SuperH CPU Frequency driver"
 595         depends on CPU_FREQ
 596         select CPU_FREQ_TABLE
 597         help
 598           This adds the cpufreq driver for SuperH. Any CPU that supports
 599           clock rate rounding through the clock framework can use this
 600           driver. While it will make the kernel slightly larger, this is
 601           harmless for CPUs that don't support rate rounding. The driver
 602           will also generate a notice in the boot log before disabling
 603           itself if the CPU in question is not capable of rate rounding.
 604
 605           For details, take a look at <file:Documentation/cpu-freq>.
 606
 607           If unsure, say N.
 608
 609 endmenu
 610
 611 source "arch/sh/drivers/Kconfig"
 612
 613 endmenu
 614
 615 menu "Kernel features"
 616
 617 source kernel/Kconfig.hz
 618
 619 config KEXEC
 620         bool "kexec system call (EXPERIMENTAL)"
 621         depends on SUPERH32 && EXPERIMENTAL && MMU
 622         help
 623           kexec is a system call that implements the ability to shutdown your
 624           current kernel, and to start another kernel.  It is like a reboot
 625           but it is independent of the system firmware.  And like a reboot
 626           you can start any kernel with it, not just Linux.
 627
 628           The name comes from the similarity to the exec system call.
 629
 630           It is an ongoing process to be certain the hardware in a machine
 631           is properly shutdown, so do not be surprised if this code does not
 632           initially work for you.  It may help to enable device hotplugging
 633           support.  As of this writing the exact hardware interface is
 634           strongly in flux, so no good recommendation can be made.
 635
 636 config CRASH_DUMP
 637         bool "kernel crash dumps (EXPERIMENTAL)"
 638         depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
 639         help
 640           Generate crash dump after being started by kexec.
 641           This should be normally only set in special crash dump kernels
 642           which are loaded in the main kernel with kexec-tools into
 643           a specially reserved region and then later executed after
 644           a crash by kdump/kexec. The crash dump kernel must be compiled
 645           to a memory address not used by the main kernel using
 646           MEMORY_START.
 647
 648           For more details see Documentation/kdump/kdump.txt
 649
 650 config KEXEC_JUMP
 651         bool "kexec jump (EXPERIMENTAL)"
 652         depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
 653         help
 654           Jump between original kernel and kexeced kernel and invoke
 655           code via KEXEC
 656
 657 config SECCOMP
 658         bool "Enable seccomp to safely compute untrusted bytecode"
 659         depends on PROC_FS
 660         help
 661           This kernel feature is useful for number crunching applications
 662           that may need to compute untrusted bytecode during their
 663           execution. By using pipes or other transports made available to
 664           the process as file descriptors supporting the read/write
 665           syscalls, it's possible to isolate those applications in
 666           their own address space using seccomp. Once seccomp is
 667           enabled via prctl, it cannot be disabled and the task is only
 668           allowed to execute a few safe syscalls defined by each seccomp
 669           mode.
 670
 671           If unsure, say N.
 672
 673 config SMP
 674         bool "Symmetric multi-processing support"
 675         depends on SYS_SUPPORTS_SMP
 676         select USE_GENERIC_SMP_HELPERS
 677         ---help---
 678           This enables support for systems with more than one CPU. If you have
 679           a system with only one CPU, like most personal computers, say N. If
 680           you have a system with more than one CPU, say Y.
 681
 682           If you say N here, the kernel will run on single and multiprocessor
 683           machines, but will use only one CPU of a multiprocessor machine. If
 684           you say Y here, the kernel will run on many, but not all,
 685           singleprocessor machines. On a singleprocessor machine, the kernel
 686           will run faster if you say N here.
 687
 688           People using multiprocessor machines who say Y here should also say
 689           Y to "Enhanced Real Time Clock Support", below.
 690
 691           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 692           available at <http://www.tldp.org/docs.html#howto>.
 693
 694           If you don't know what to do here, say N.
 695
 696 config NR_CPUS
 697         int "Maximum number of CPUs (2-32)"
 698         range 2 32
 699         depends on SMP
 700         default "4" if CPU_SUBTYPE_SHX3
 701         default "2"
 702         help
 703           This allows you to specify the maximum number of CPUs which this
 704           kernel will support.  The maximum supported value is 32 and the
 705           minimum value which makes sense is 2.
 706
 707           This is purely to save memory - each supported CPU adds
 708           approximately eight kilobytes to the kernel image.
 709
 710 config HOTPLUG_CPU
 711         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 712         depends on SMP && HOTPLUG && EXPERIMENTAL
 713         help
 714           Say Y here to experiment with turning CPUs off and on.  CPUs
 715           can be controlled through /sys/devices/system/cpu.
 716
 717 source "kernel/Kconfig.preempt"
 718
 719 config GUSA
 720         def_bool y
 721         depends on !SMP && SUPERH32
 722         help
 723           This enables support for gUSA (general UserSpace Atomicity).
 724           This is the default implementation for both UP and non-ll/sc
 725           CPUs, and is used by the libc, amongst others.
 726
 727           For additional information, design information can be found
 728           in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
 729
 730           This should only be disabled for special cases where alternate
 731           atomicity implementations exist.
 732
 733 config GUSA_RB
 734         bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
 735         depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
 736         help
 737           Enabling this option will allow the kernel to implement some
 738           atomic operations using a software implementation of load-locked/
 739           store-conditional (LLSC). On machines which do not have hardware
 740           LLSC, this should be more efficient than the other alternative of
 741           disabling interrupts around the atomic sequence.
 742
 743 config HW_PERF_EVENTS
 744         bool "Enable hardware performance counter support for perf events"
 745         depends on PERF_EVENTS && CPU_HAS_PMU
 746         default y
 747         help
 748           Enable hardware performance counter support for perf events. If
 749           disabled, perf events will use software events only.
 750
 751 source "drivers/sh/Kconfig"
 752
 753 endmenu
 754
 755 menu "Boot options"
 756
 757 config ZERO_PAGE_OFFSET
 758         hex
 759         default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
 760                                 SH_7751_SOLUTION_ENGINE
 761         default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
 762         default "0x00002000" if PAGE_SIZE_8KB
 763         default "0x00001000"
 764         help
 765           This sets the default offset of zero page.
 766
 767 config BOOT_LINK_OFFSET
 768         hex
 769         default "0x00210000" if SH_SHMIN
 770         default "0x00400000" if SH_CAYMAN
 771         default "0x00810000" if SH_7780_SOLUTION_ENGINE
 772         default "0x009e0000" if SH_TITAN
 773         default "0x01800000" if SH_SDK7780
 774         default "0x02000000" if SH_EDOSK7760
 775         default "0x00800000"
 776         help
 777           This option allows you to set the link address offset of the zImage.
 778           This can be useful if you are on a board which has a small amount of
 779           memory.
 780
 781 config ENTRY_OFFSET
 782         hex
 783         default "0x00001000" if PAGE_SIZE_4KB
 784         default "0x00002000" if PAGE_SIZE_8KB
 785         default "0x00004000" if PAGE_SIZE_16KB
 786         default "0x00010000" if PAGE_SIZE_64KB
 787         default "0x00000000"
 788
 789 config ROMIMAGE_MMCIF
 790         bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
 791         depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
 792         help
 793           Say Y here to include experimental MMCIF loading code in
 794           romImage. With this enabled it is possible to write the romImage
 795           kernel image to an MMC card and boot the kernel straight from
 796           the reset vector. At reset the processor Mask ROM will load the
 797           first part of the romImage which in turn loads the rest the kernel
 798           image to RAM using the MMCIF hardware block.
 799
 800 choice
 801         prompt "Kernel command line"
 802         optional
 803         default CMDLINE_OVERWRITE
 804         help
 805           Setting this option allows the kernel command line arguments
 806           to be set.
 807
 808 config CMDLINE_OVERWRITE
 809         bool "Overwrite bootloader kernel arguments"
 810         help
 811           Given string will overwrite any arguments passed in by
 812           a bootloader.
 813
 814 config CMDLINE_EXTEND
 815         bool "Extend bootloader kernel arguments"
 816         help
 817           Given string will be concatenated with arguments passed in
 818           by a bootloader.
 819
 820 endchoice
 821
 822 config CMDLINE
 823         string "Kernel command line arguments string"
 824         depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
 825         default "console=ttySC1,115200"
 826
 827 endmenu
 828
 829 menu "Bus options"
 830
 831 config SUPERHYWAY
 832         tristate "SuperHyway Bus support"
 833         depends on CPU_SUBTYPE_SH4_202
 834
 835 config MAPLE
 836         bool "Maple Bus support"
 837         depends on SH_DREAMCAST
 838         help
 839          The Maple Bus is SEGA's serial communication bus for peripherals
 840          on the Dreamcast. Without this bus support you won't be able to
 841          get your Dreamcast keyboard etc to work, so most users
 842          probably want to say 'Y' here, unless you are only using the
 843          Dreamcast with a serial line terminal or a remote network
 844          connection.
 845
 846 config PCI
 847         bool "PCI support"
 848         depends on SYS_SUPPORTS_PCI
 849         select PCI_DOMAINS
 850         help
 851           Find out whether you have a PCI motherboard. PCI is the name of a
 852           bus system, i.e. the way the CPU talks to the other stuff inside
 853           your box. If you have PCI, say Y, otherwise N.
 854
 855 config PCI_DOMAINS
 856         bool
 857
 858 source "drivers/pci/pcie/Kconfig"
 859
 860 source "drivers/pci/Kconfig"
 861
 862 source "drivers/pcmcia/Kconfig"
 863
 864 source "drivers/pci/hotplug/Kconfig"
 865
 866 endmenu
 867
 868 menu "Executable file formats"
 869
 870 source "fs/Kconfig.binfmt"
 871
 872 endmenu
 873
 874 menu "Power management options (EXPERIMENTAL)"
 875 depends on EXPERIMENTAL
 876
 877 source "kernel/power/Kconfig"
 878
 879 source "drivers/cpuidle/Kconfig"
 880
 881 endmenu
 882
 883 source "net/Kconfig"
 884
 885 source "drivers/Kconfig"
 886
 887 source "fs/Kconfig"
 888
 889 source "arch/sh/Kconfig.debug"
 890
 891 source "security/Kconfig"
 892
 893 source "crypto/Kconfig"
 894
 895 menuconfig VIRTUALIZATION
 896         bool "Virtualization"
 897         default n
 898         ---help---
 899           Say Y here to get to see options for using your Linux host to run other
 900           operating systems inside virtual machines (guests).
 901           This option alone does not add any kernel code.
 902
 903           If you say N, all options in this submenu will be skipped and disabled.
 904
 905 if VIRTUALIZATION
 906
 907 source drivers/virtio/Kconfig
 908
 909 endif # VIRTUALIZATION
 910
 911 source "lib/Kconfig"