arch/sh/Kconfig

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see Documentation/kbuild/kconfig-language.txt.
   4 #
   5
   6 mainmenu "Linux/SuperH Kernel Configuration"
   7
   8 config SUPERH
   9         def_bool y
  10         select EMBEDDED
  11         select HAVE_CLK
  12         select HAVE_IDE if HAS_IOPORT
  13         select HAVE_MEMBLOCK
  14         select HAVE_OPROFILE
  15         select HAVE_GENERIC_DMA_COHERENT
  16         select HAVE_ARCH_TRACEHOOK
  17         select HAVE_DMA_API_DEBUG
  18         select HAVE_DMA_ATTRS
  19         select HAVE_IRQ_WORK
  20         select HAVE_PERF_EVENTS
  21         select PERF_USE_VMALLOC
  22         select HAVE_KERNEL_GZIP
  23         select HAVE_KERNEL_BZIP2
  24         select HAVE_KERNEL_LZMA
  25         select HAVE_KERNEL_LZO
  26         select HAVE_SYSCALL_TRACEPOINTS
  27         select HAVE_REGS_AND_STACK_ACCESS_API
  28         select RTC_LIB
  29         select GENERIC_ATOMIC64
  30         help
  31           The SuperH is a RISC processor targeted for use in embedded systems
  32           and consumer electronics; it was also used in the Sega Dreamcast
  33           gaming console.  The SuperH port has a home page at
  34           <http://www.linux-sh.org/>.
  35
  36 config SUPERH32
  37         def_bool ARCH = "sh"
  38         select HAVE_KPROBES
  39         select HAVE_KRETPROBES
  40         select HAVE_IOREMAP_PROT if MMU && !X2TLB
  41         select HAVE_FUNCTION_TRACER
  42         select HAVE_FTRACE_MCOUNT_RECORD
  43         select HAVE_DYNAMIC_FTRACE
  44         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  45         select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
  46         select HAVE_FUNCTION_GRAPH_TRACER
  47         select HAVE_ARCH_KGDB
  48         select HAVE_HW_BREAKPOINT
  49         select HAVE_MIXED_BREAKPOINTS_REGS
  50         select PERF_EVENTS
  51         select ARCH_HIBERNATION_POSSIBLE if MMU
  52
  53 config SUPERH64
  54         def_bool ARCH = "sh64"
  55
  56 config ARCH_DEFCONFIG
  57         string
  58         default "arch/sh/configs/shx3_defconfig" if SUPERH32
  59         default "arch/sh/configs/cayman_defconfig" if SUPERH64
  60
  61 config RWSEM_GENERIC_SPINLOCK
  62         def_bool y
  63
  64 config RWSEM_XCHGADD_ALGORITHM
  65         bool
  66
  67 config GENERIC_BUG
  68         def_bool y
  69         depends on BUG && SUPERH32
  70
  71 config GENERIC_CSUM
  72         def_bool y
  73         depends on SUPERH64
  74
  75 config GENERIC_FIND_NEXT_BIT
  76         def_bool y
  77
  78 config GENERIC_HWEIGHT
  79         def_bool y
  80
  81 config GENERIC_HARDIRQS
  82         def_bool y
  83
  84 config GENERIC_HARDIRQS_NO__DO_IRQ
  85         def_bool y
  86
  87 config IRQ_PER_CPU
  88         def_bool y
  89
  90 config SPARSE_IRQ
  91         def_bool y
  92         depends on SUPERH32
  93
  94 config GENERIC_GPIO
  95         def_bool n
  96
  97 config GENERIC_CALIBRATE_DELAY
  98         bool
  99
 100 config GENERIC_IOMAP
 101         bool
 102
 103 config GENERIC_CLOCKEVENTS
 104         def_bool y
 105
 106 config GENERIC_CLOCKEVENTS_BROADCAST
 107         bool
 108
 109 config GENERIC_CMOS_UPDATE
 110         def_bool y
 111         depends on SH_SH03 || SH_DREAMCAST
 112
 113 config GENERIC_LOCKBREAK
 114         def_bool y
 115         depends on SMP && PREEMPT
 116
 117 config SYS_SUPPORTS_PM
 118         bool
 119         depends on !SMP
 120
 121 config ARCH_SUSPEND_POSSIBLE
 122         def_bool n
 123
 124 config ARCH_HIBERNATION_POSSIBLE
 125         def_bool n
 126
 127 config SYS_SUPPORTS_APM_EMULATION
 128         bool
 129         select ARCH_SUSPEND_POSSIBLE
 130
 131 config SYS_SUPPORTS_HUGETLBFS
 132         bool
 133
 134 config SYS_SUPPORTS_SMP
 135         bool
 136
 137 config SYS_SUPPORTS_NUMA
 138         bool
 139
 140 config SYS_SUPPORTS_PCI
 141         bool
 142
 143 config SYS_SUPPORTS_CMT
 144         bool
 145
 146 config SYS_SUPPORTS_MTU2
 147         bool
 148
 149 config SYS_SUPPORTS_TMU
 150         bool
 151
 152 config STACKTRACE_SUPPORT
 153         def_bool y
 154
 155 config LOCKDEP_SUPPORT
 156         def_bool y
 157
 158 config HAVE_LATENCYTOP_SUPPORT
 159         def_bool y
 160
 161 config ARCH_HAS_ILOG2_U32
 162         def_bool n
 163
 164 config ARCH_HAS_ILOG2_U64
 165         def_bool n
 166
 167 config ARCH_NO_VIRT_TO_BUS
 168         def_bool y
 169
 170 config ARCH_HAS_DEFAULT_IDLE
 171         def_bool y
 172
 173 config ARCH_HAS_CPU_IDLE_WAIT
 174         def_bool y
 175
 176 config NO_IOPORT
 177         bool
 178
 179 config IO_TRAPPED
 180         bool
 181
 182 config DMA_COHERENT
 183         bool
 184
 185 config DMA_NONCOHERENT
 186         def_bool !DMA_COHERENT
 187
 188 config NEED_DMA_MAP_STATE
 189         def_bool DMA_NONCOHERENT
 190
 191 config NEED_SG_DMA_LENGTH
 192         def_bool y
 193
 194 source "init/Kconfig"
 195
 196 source "kernel/Kconfig.freezer"
 197
 198 menu "System type"
 199
 200 #
 201 # Processor families
 202 #
 203 config CPU_SH2
 204         bool
 205
 206 config CPU_SH2A
 207         bool
 208         select CPU_SH2
 209
 210 config CPU_SH3
 211         bool
 212         select CPU_HAS_INTEVT
 213         select CPU_HAS_SR_RB
 214         select SYS_SUPPORTS_TMU
 215
 216 config CPU_SH4
 217         bool
 218         select CPU_HAS_INTEVT
 219         select CPU_HAS_SR_RB
 220         select CPU_HAS_FPU if !CPU_SH4AL_DSP
 221         select SYS_SUPPORTS_TMU
 222         select SYS_SUPPORTS_HUGETLBFS if MMU
 223
 224 config CPU_SH4A
 225         bool
 226         select CPU_SH4
 227
 228 config CPU_SH4AL_DSP
 229         bool
 230         select CPU_SH4A
 231         select CPU_HAS_DSP
 232
 233 config CPU_SH5
 234         bool
 235         select CPU_HAS_FPU
 236         select SYS_SUPPORTS_TMU
 237         select SYS_SUPPORTS_HUGETLBFS if MMU
 238
 239 config CPU_SHX2
 240         bool
 241
 242 config CPU_SHX3
 243         bool
 244         select DMA_COHERENT
 245         select SYS_SUPPORTS_SMP
 246         select SYS_SUPPORTS_NUMA
 247
 248 config ARCH_SHMOBILE
 249         bool
 250         select ARCH_SUSPEND_POSSIBLE
 251         select PM
 252         select PM_RUNTIME
 253
 254 config CPU_HAS_PMU
 255        depends on CPU_SH4 || CPU_SH4A
 256        default y
 257        bool
 258
 259 if SUPERH32
 260
 261 choice
 262         prompt "Processor sub-type selection"
 263
 264 #
 265 # Processor subtypes
 266 #
 267
 268 # SH-2 Processor Support
 269
 270 config CPU_SUBTYPE_SH7619
 271         bool "Support SH7619 processor"
 272         select CPU_SH2
 273         select SYS_SUPPORTS_CMT
 274
 275 # SH-2A Processor Support
 276
 277 config CPU_SUBTYPE_SH7201
 278         bool "Support SH7201 processor"
 279         select CPU_SH2A
 280         select CPU_HAS_FPU
 281         select SYS_SUPPORTS_MTU2
 282
 283 config CPU_SUBTYPE_SH7203
 284         bool "Support SH7203 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_SH7206
 291         bool "Support SH7206 processor"
 292         select CPU_SH2A
 293         select SYS_SUPPORTS_CMT
 294         select SYS_SUPPORTS_MTU2
 295
 296 config CPU_SUBTYPE_SH7263
 297         bool "Support SH7263 processor"
 298         select CPU_SH2A
 299         select CPU_HAS_FPU
 300         select SYS_SUPPORTS_CMT
 301         select SYS_SUPPORTS_MTU2
 302
 303 config CPU_SUBTYPE_MXG
 304         bool "Support MX-G processor"
 305         select CPU_SH2A
 306         select SYS_SUPPORTS_MTU2
 307         help
 308           Select MX-G if running on an R8A03022BG part.
 309
 310 # SH-3 Processor Support
 311
 312 config CPU_SUBTYPE_SH7705
 313         bool "Support SH7705 processor"
 314         select CPU_SH3
 315
 316 config CPU_SUBTYPE_SH7706
 317         bool "Support SH7706 processor"
 318         select CPU_SH3
 319         help
 320           Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
 321
 322 config CPU_SUBTYPE_SH7707
 323         bool "Support SH7707 processor"
 324         select CPU_SH3
 325         help
 326           Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
 327
 328 config CPU_SUBTYPE_SH7708
 329         bool "Support SH7708 processor"
 330         select CPU_SH3
 331         help
 332           Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
 333           if you have a 100 Mhz SH-3 HD6417708R CPU.
 334
 335 config CPU_SUBTYPE_SH7709
 336         bool "Support SH7709 processor"
 337         select CPU_SH3
 338         help
 339           Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
 340
 341 config CPU_SUBTYPE_SH7710
 342         bool "Support SH7710 processor"
 343         select CPU_SH3
 344         select CPU_HAS_DSP
 345         help
 346           Select SH7710 if you have a SH3-DSP SH7710 CPU.
 347
 348 config CPU_SUBTYPE_SH7712
 349         bool "Support SH7712 processor"
 350         select CPU_SH3
 351         select CPU_HAS_DSP
 352         help
 353           Select SH7712 if you have a SH3-DSP SH7712 CPU.
 354
 355 config CPU_SUBTYPE_SH7720
 356         bool "Support SH7720 processor"
 357         select CPU_SH3
 358         select CPU_HAS_DSP
 359         select SYS_SUPPORTS_CMT
 360         help
 361           Select SH7720 if you have a SH3-DSP SH7720 CPU.
 362
 363 config CPU_SUBTYPE_SH7721
 364         bool "Support SH7721 processor"
 365         select CPU_SH3
 366         select CPU_HAS_DSP
 367         select SYS_SUPPORTS_CMT
 368         help
 369           Select SH7721 if you have a SH3-DSP SH7721 CPU.
 370
 371 # SH-4 Processor Support
 372
 373 config CPU_SUBTYPE_SH7750
 374         bool "Support SH7750 processor"
 375         select CPU_SH4
 376         help
 377           Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
 378
 379 config CPU_SUBTYPE_SH7091
 380         bool "Support SH7091 processor"
 381         select CPU_SH4
 382         help
 383           Select SH7091 if you have an SH-4 based Sega device (such as
 384           the Dreamcast, Naomi, and Naomi 2).
 385
 386 config CPU_SUBTYPE_SH7750R
 387         bool "Support SH7750R processor"
 388         select CPU_SH4
 389
 390 config CPU_SUBTYPE_SH7750S
 391         bool "Support SH7750S processor"
 392         select CPU_SH4
 393
 394 config CPU_SUBTYPE_SH7751
 395         bool "Support SH7751 processor"
 396         select CPU_SH4
 397         help
 398           Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
 399           or if you have a HD6417751R CPU.
 400
 401 config CPU_SUBTYPE_SH7751R
 402         bool "Support SH7751R processor"
 403         select CPU_SH4
 404
 405 config CPU_SUBTYPE_SH7760
 406         bool "Support SH7760 processor"
 407         select CPU_SH4
 408
 409 config CPU_SUBTYPE_SH4_202
 410         bool "Support SH4-202 processor"
 411         select CPU_SH4
 412
 413 # SH-4A Processor Support
 414
 415 config CPU_SUBTYPE_SH7723
 416         bool "Support SH7723 processor"
 417         select CPU_SH4A
 418         select CPU_SHX2
 419         select ARCH_SHMOBILE
 420         select ARCH_SPARSEMEM_ENABLE
 421         select SYS_SUPPORTS_CMT
 422         help
 423           Select SH7723 if you have an SH-MobileR2 CPU.
 424
 425 config CPU_SUBTYPE_SH7724
 426         bool "Support SH7724 processor"
 427         select CPU_SH4A
 428         select CPU_SHX2
 429         select ARCH_SHMOBILE
 430         select ARCH_SPARSEMEM_ENABLE
 431         select SYS_SUPPORTS_CMT
 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         help
 440           Select SH7757 if you have a SH4A SH7757 CPU.
 441
 442 config CPU_SUBTYPE_SH7763
 443         bool "Support SH7763 processor"
 444         select CPU_SH4A
 445         help
 446           Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
 447
 448 config CPU_SUBTYPE_SH7770
 449         bool "Support SH7770 processor"
 450         select CPU_SH4A
 451
 452 config CPU_SUBTYPE_SH7780
 453         bool "Support SH7780 processor"
 454         select CPU_SH4A
 455
 456 config CPU_SUBTYPE_SH7785
 457         bool "Support SH7785 processor"
 458         select CPU_SH4A
 459         select CPU_SHX2
 460         select ARCH_SPARSEMEM_ENABLE
 461         select SYS_SUPPORTS_NUMA
 462
 463 config CPU_SUBTYPE_SH7786
 464         bool "Support SH7786 processor"
 465         select CPU_SH4A
 466         select CPU_SHX3
 467         select CPU_HAS_PTEAEX
 468         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 469
 470 config CPU_SUBTYPE_SHX3
 471         bool "Support SH-X3 processor"
 472         select CPU_SH4A
 473         select CPU_SHX3
 474         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 475         select ARCH_REQUIRE_GPIOLIB
 476
 477 # SH4AL-DSP Processor Support
 478
 479 config CPU_SUBTYPE_SH7343
 480         bool "Support SH7343 processor"
 481         select CPU_SH4AL_DSP
 482         select ARCH_SHMOBILE
 483         select SYS_SUPPORTS_CMT
 484
 485 config CPU_SUBTYPE_SH7722
 486         bool "Support SH7722 processor"
 487         select CPU_SH4AL_DSP
 488         select CPU_SHX2
 489         select ARCH_SHMOBILE
 490         select ARCH_SPARSEMEM_ENABLE
 491         select SYS_SUPPORTS_NUMA
 492         select SYS_SUPPORTS_CMT
 493
 494 config CPU_SUBTYPE_SH7366
 495         bool "Support SH7366 processor"
 496         select CPU_SH4AL_DSP
 497         select CPU_SHX2
 498         select ARCH_SHMOBILE
 499         select ARCH_SPARSEMEM_ENABLE
 500         select SYS_SUPPORTS_NUMA
 501         select SYS_SUPPORTS_CMT
 502
 503 endchoice
 504
 505 endif
 506
 507 if SUPERH64
 508
 509 choice
 510         prompt "Processor sub-type selection"
 511
 512 # SH-5 Processor Support
 513
 514 config CPU_SUBTYPE_SH5_101
 515         bool "Support SH5-101 processor"
 516         select CPU_SH5
 517
 518 config CPU_SUBTYPE_SH5_103
 519         bool "Support SH5-103 processor"
 520         select CPU_SH5
 521
 522 endchoice
 523
 524 endif
 525
 526 source "arch/sh/mm/Kconfig"
 527
 528 source "arch/sh/Kconfig.cpu"
 529
 530 source "arch/sh/boards/Kconfig"
 531
 532 menu "Timer and clock configuration"
 533
 534 config SH_TIMER_TMU
 535         bool "TMU timer driver"
 536         depends on SYS_SUPPORTS_TMU
 537         default y
 538         help
 539           This enables the build of the TMU timer driver.
 540
 541 config SH_TIMER_CMT
 542         bool "CMT timer driver"
 543         depends on SYS_SUPPORTS_CMT
 544         default y
 545         help
 546           This enables build of the CMT timer driver.
 547
 548 config SH_TIMER_MTU2
 549         bool "MTU2 timer driver"
 550         depends on SYS_SUPPORTS_MTU2
 551         default y
 552         help
 553           This enables build of the MTU2 timer driver.
 554
 555 config SH_PCLK_FREQ
 556         int "Peripheral clock frequency (in Hz)"
 557         depends on SH_CLK_CPG_LEGACY
 558         default "31250000" if CPU_SUBTYPE_SH7619
 559         default "33333333" if CPU_SUBTYPE_SH7770 || \
 560                               CPU_SUBTYPE_SH7760 || \
 561                               CPU_SUBTYPE_SH7705 || \
 562                               CPU_SUBTYPE_SH7203 || \
 563                               CPU_SUBTYPE_SH7206 || \
 564                               CPU_SUBTYPE_SH7263 || \
 565                               CPU_SUBTYPE_MXG
 566         default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
 567         default "66000000" if CPU_SUBTYPE_SH4_202
 568         default "50000000"
 569         help
 570           This option is used to specify the peripheral clock frequency.
 571           This is necessary for determining the reference clock value on
 572           platforms lacking an RTC.
 573
 574 config SH_CLK_CPG
 575         def_bool y
 576
 577 config SH_CLK_CPG_LEGACY
 578         depends on SH_CLK_CPG
 579         def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
 580                       !CPU_SHX3 && !CPU_SUBTYPE_SH7757
 581
 582 config SH_CLK_MD
 583         int "CPU Mode Pin Setting"
 584         depends on CPU_SH2
 585         default 6 if CPU_SUBTYPE_SH7206
 586         default 5 if CPU_SUBTYPE_SH7619
 587         default 0
 588         help
 589           MD2 - MD0 pin setting.
 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"