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 IRQ_FORCED_THREADING
  25         select RTC_LIB
  26         select GENERIC_ATOMIC64
  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_HWEIGHT
  75         def_bool y
  76
  77 config IRQ_PER_CPU
  78         def_bool y
  79
  80 config GENERIC_GPIO
  81         def_bool n
  82
  83 config GENERIC_CALIBRATE_DELAY
  84         bool
  85
  86 config GENERIC_IOMAP
  87         bool
  88
  89 config GENERIC_CLOCKEVENTS
  90         def_bool y
  91
  92 config GENERIC_CLOCKEVENTS_BROADCAST
  93         bool
  94
  95 config GENERIC_CMOS_UPDATE
  96         def_bool y
  97         depends on SH_SH03 || SH_DREAMCAST
  98
  99 config GENERIC_LOCKBREAK
 100         def_bool y
 101         depends on SMP && PREEMPT
 102
 103 config SYS_SUPPORTS_PM
 104         bool
 105         depends on !SMP
 106
 107 config ARCH_SUSPEND_POSSIBLE
 108         def_bool n
 109
 110 config ARCH_HIBERNATION_POSSIBLE
 111         def_bool n
 112
 113 config SYS_SUPPORTS_APM_EMULATION
 114         bool
 115         select ARCH_SUSPEND_POSSIBLE
 116
 117 config SYS_SUPPORTS_HUGETLBFS
 118         bool
 119
 120 config SYS_SUPPORTS_SMP
 121         bool
 122
 123 config SYS_SUPPORTS_NUMA
 124         bool
 125
 126 config SYS_SUPPORTS_PCI
 127         bool
 128
 129 config SYS_SUPPORTS_CMT
 130         bool
 131
 132 config SYS_SUPPORTS_MTU2
 133         bool
 134
 135 config SYS_SUPPORTS_TMU
 136         bool
 137
 138 config STACKTRACE_SUPPORT
 139         def_bool y
 140
 141 config LOCKDEP_SUPPORT
 142         def_bool y
 143
 144 config HAVE_LATENCYTOP_SUPPORT
 145         def_bool y
 146
 147 config ARCH_HAS_ILOG2_U32
 148         def_bool n
 149
 150 config ARCH_HAS_ILOG2_U64
 151         def_bool n
 152
 153 config ARCH_NO_VIRT_TO_BUS
 154         def_bool y
 155
 156 config ARCH_HAS_DEFAULT_IDLE
 157         def_bool y
 158
 159 config ARCH_HAS_CPU_IDLE_WAIT
 160         def_bool y
 161
 162 config NO_IOPORT
 163         def_bool !PCI
 164         depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN
 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         select UNCACHED_MAPPING
 197
 198 config CPU_SH3
 199         bool
 200         select CPU_HAS_INTEVT
 201         select CPU_HAS_SR_RB
 202         select SYS_SUPPORTS_TMU
 203
 204 config CPU_SH4
 205         bool
 206         select CPU_HAS_INTEVT
 207         select CPU_HAS_SR_RB
 208         select CPU_HAS_FPU if !CPU_SH4AL_DSP
 209         select SYS_SUPPORTS_TMU
 210         select SYS_SUPPORTS_HUGETLBFS if MMU
 211
 212 config CPU_SH4A
 213         bool
 214         select CPU_SH4
 215
 216 config CPU_SH4AL_DSP
 217         bool
 218         select CPU_SH4A
 219         select CPU_HAS_DSP
 220
 221 config CPU_SH5
 222         bool
 223         select CPU_HAS_FPU
 224         select SYS_SUPPORTS_TMU
 225         select SYS_SUPPORTS_HUGETLBFS if MMU
 226
 227 config CPU_SHX2
 228         bool
 229
 230 config CPU_SHX3
 231         bool
 232         select DMA_COHERENT
 233         select SYS_SUPPORTS_SMP
 234         select SYS_SUPPORTS_NUMA
 235
 236 config ARCH_SHMOBILE
 237         bool
 238         select ARCH_SUSPEND_POSSIBLE
 239         select PM
 240         select PM_RUNTIME
 241
 242 config CPU_HAS_PMU
 243        depends on CPU_SH4 || CPU_SH4A
 244        default y
 245        bool
 246
 247 if SUPERH32
 248
 249 choice
 250         prompt "Processor sub-type selection"
 251
 252 #
 253 # Processor subtypes
 254 #
 255
 256 # SH-2 Processor Support
 257
 258 config CPU_SUBTYPE_SH7619
 259         bool "Support SH7619 processor"
 260         select CPU_SH2
 261         select SYS_SUPPORTS_CMT
 262
 263 # SH-2A Processor Support
 264
 265 config CPU_SUBTYPE_SH7201
 266         bool "Support SH7201 processor"
 267         select CPU_SH2A
 268         select CPU_HAS_FPU
 269         select SYS_SUPPORTS_MTU2
 270
 271 config CPU_SUBTYPE_SH7203
 272         bool "Support SH7203 processor"
 273         select CPU_SH2A
 274         select CPU_HAS_FPU
 275         select SYS_SUPPORTS_CMT
 276         select SYS_SUPPORTS_MTU2
 277         select ARCH_WANT_OPTIONAL_GPIOLIB
 278
 279 config CPU_SUBTYPE_SH7206
 280         bool "Support SH7206 processor"
 281         select CPU_SH2A
 282         select SYS_SUPPORTS_CMT
 283         select SYS_SUPPORTS_MTU2
 284
 285 config CPU_SUBTYPE_SH7263
 286         bool "Support SH7263 processor"
 287         select CPU_SH2A
 288         select CPU_HAS_FPU
 289         select SYS_SUPPORTS_CMT
 290         select SYS_SUPPORTS_MTU2
 291
 292 config CPU_SUBTYPE_MXG
 293         bool "Support MX-G processor"
 294         select CPU_SH2A
 295         select SYS_SUPPORTS_MTU2
 296         help
 297           Select MX-G if running on an R8A03022BG part.
 298
 299 # SH-3 Processor Support
 300
 301 config CPU_SUBTYPE_SH7705
 302         bool "Support SH7705 processor"
 303         select CPU_SH3
 304
 305 config CPU_SUBTYPE_SH7706
 306         bool "Support SH7706 processor"
 307         select CPU_SH3
 308         help
 309           Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
 310
 311 config CPU_SUBTYPE_SH7707
 312         bool "Support SH7707 processor"
 313         select CPU_SH3
 314         help
 315           Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
 316
 317 config CPU_SUBTYPE_SH7708
 318         bool "Support SH7708 processor"
 319         select CPU_SH3
 320         help
 321           Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
 322           if you have a 100 Mhz SH-3 HD6417708R CPU.
 323
 324 config CPU_SUBTYPE_SH7709
 325         bool "Support SH7709 processor"
 326         select CPU_SH3
 327         help
 328           Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
 329
 330 config CPU_SUBTYPE_SH7710
 331         bool "Support SH7710 processor"
 332         select CPU_SH3
 333         select CPU_HAS_DSP
 334         help
 335           Select SH7710 if you have a SH3-DSP SH7710 CPU.
 336
 337 config CPU_SUBTYPE_SH7712
 338         bool "Support SH7712 processor"
 339         select CPU_SH3
 340         select CPU_HAS_DSP
 341         help
 342           Select SH7712 if you have a SH3-DSP SH7712 CPU.
 343
 344 config CPU_SUBTYPE_SH7720
 345         bool "Support SH7720 processor"
 346         select CPU_SH3
 347         select CPU_HAS_DSP
 348         select SYS_SUPPORTS_CMT
 349         select ARCH_WANT_OPTIONAL_GPIOLIB
 350         select USB_ARCH_HAS_OHCI
 351         help
 352           Select SH7720 if you have a SH3-DSP SH7720 CPU.
 353
 354 config CPU_SUBTYPE_SH7721
 355         bool "Support SH7721 processor"
 356         select CPU_SH3
 357         select CPU_HAS_DSP
 358         select SYS_SUPPORTS_CMT
 359         select USB_ARCH_HAS_OHCI
 360         help
 361           Select SH7721 if you have a SH3-DSP SH7721 CPU.
 362
 363 # SH-4 Processor Support
 364
 365 config CPU_SUBTYPE_SH7750
 366         bool "Support SH7750 processor"
 367         select CPU_SH4
 368         help
 369           Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
 370
 371 config CPU_SUBTYPE_SH7091
 372         bool "Support SH7091 processor"
 373         select CPU_SH4
 374         help
 375           Select SH7091 if you have an SH-4 based Sega device (such as
 376           the Dreamcast, Naomi, and Naomi 2).
 377
 378 config CPU_SUBTYPE_SH7750R
 379         bool "Support SH7750R processor"
 380         select CPU_SH4
 381
 382 config CPU_SUBTYPE_SH7750S
 383         bool "Support SH7750S processor"
 384         select CPU_SH4
 385
 386 config CPU_SUBTYPE_SH7751
 387         bool "Support SH7751 processor"
 388         select CPU_SH4
 389         help
 390           Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
 391           or if you have a HD6417751R CPU.
 392
 393 config CPU_SUBTYPE_SH7751R
 394         bool "Support SH7751R processor"
 395         select CPU_SH4
 396
 397 config CPU_SUBTYPE_SH7760
 398         bool "Support SH7760 processor"
 399         select CPU_SH4
 400
 401 config CPU_SUBTYPE_SH4_202
 402         bool "Support SH4-202 processor"
 403         select CPU_SH4
 404
 405 # SH-4A Processor Support
 406
 407 config CPU_SUBTYPE_SH7723
 408         bool "Support SH7723 processor"
 409         select CPU_SH4A
 410         select CPU_SHX2
 411         select ARCH_SHMOBILE
 412         select ARCH_SPARSEMEM_ENABLE
 413         select SYS_SUPPORTS_CMT
 414         select ARCH_WANT_OPTIONAL_GPIOLIB
 415         help
 416           Select SH7723 if you have an SH-MobileR2 CPU.
 417
 418 config CPU_SUBTYPE_SH7724
 419         bool "Support SH7724 processor"
 420         select CPU_SH4A
 421         select CPU_SHX2
 422         select ARCH_SHMOBILE
 423         select ARCH_SPARSEMEM_ENABLE
 424         select SYS_SUPPORTS_CMT
 425         select ARCH_WANT_OPTIONAL_GPIOLIB
 426         help
 427           Select SH7724 if you have an SH-MobileR2R CPU.
 428
 429 config CPU_SUBTYPE_SH7757
 430         bool "Support SH7757 processor"
 431         select CPU_SH4A
 432         select CPU_SHX2
 433         select ARCH_WANT_OPTIONAL_GPIOLIB
 434         select USB_ARCH_HAS_OHCI
 435         select USB_ARCH_HAS_EHCI
 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"