arch/sh/Kconfig

   1 config SUPERH
   2         def_bool y
   3         select ARCH_MIGHT_HAVE_PC_PARPORT
   4         select EXPERT
   5         select CLKDEV_LOOKUP
   6         select HAVE_IDE if HAS_IOPORT_MAP
   7         select HAVE_MEMBLOCK
   8         select HAVE_MEMBLOCK_NODE_MAP
   9         select ARCH_DISCARD_MEMBLOCK
  10         select HAVE_OPROFILE
  11         select HAVE_GENERIC_DMA_COHERENT
  12         select HAVE_ARCH_TRACEHOOK
  13         select HAVE_DMA_API_DEBUG
  14         select HAVE_DMA_ATTRS
  15         select HAVE_PERF_EVENTS
  16         select HAVE_DEBUG_BUGVERBOSE
  17         select ARCH_HAVE_CUSTOM_GPIO_H
  18         select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
  19         select PERF_USE_VMALLOC
  20         select HAVE_DEBUG_KMEMLEAK
  21         select HAVE_KERNEL_GZIP
  22         select HAVE_KERNEL_BZIP2
  23         select HAVE_KERNEL_LZMA
  24         select HAVE_KERNEL_XZ
  25         select HAVE_KERNEL_LZO
  26         select HAVE_UID16
  27         select ARCH_WANT_IPC_PARSE_VERSION
  28         select HAVE_SYSCALL_TRACEPOINTS
  29         select HAVE_REGS_AND_STACK_ACCESS_API
  30         select MAY_HAVE_SPARSE_IRQ
  31         select IRQ_FORCED_THREADING
  32         select RTC_LIB
  33         select GENERIC_ATOMIC64
  34         select GENERIC_IRQ_SHOW
  35         select GENERIC_SMP_IDLE_THREAD
  36         select GENERIC_IDLE_POLL_SETUP
  37         select GENERIC_CLOCKEVENTS
  38         select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
  39         select GENERIC_STRNCPY_FROM_USER
  40         select GENERIC_STRNLEN_USER
  41         select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
  42         select MODULES_USE_ELF_RELA
  43         select OLD_SIGSUSPEND
  44         select OLD_SIGACTION
  45         select HAVE_ARCH_AUDITSYSCALL
  46         help
  47           The SuperH is a RISC processor targeted for use in embedded systems
  48           and consumer electronics; it was also used in the Sega Dreamcast
  49           gaming console.  The SuperH port has a home page at
  50           <http://www.linux-sh.org/>.
  51
  52 config SUPERH32
  53         def_bool ARCH = "sh"
  54         select HAVE_KPROBES
  55         select HAVE_KRETPROBES
  56         select HAVE_IOREMAP_PROT if MMU && !X2TLB
  57         select HAVE_FUNCTION_TRACER
  58         select HAVE_FTRACE_MCOUNT_RECORD
  59         select HAVE_DYNAMIC_FTRACE
  60         select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
  61         select ARCH_WANT_IPC_PARSE_VERSION
  62         select HAVE_FUNCTION_GRAPH_TRACER
  63         select HAVE_ARCH_KGDB
  64         select HAVE_HW_BREAKPOINT
  65         select HAVE_MIXED_BREAKPOINTS_REGS
  66         select PERF_EVENTS
  67         select ARCH_HIBERNATION_POSSIBLE if MMU
  68         select SPARSE_IRQ
  69         select HAVE_CC_STACKPROTECTOR
  70
  71 config SUPERH64
  72         def_bool ARCH = "sh64"
  73         select KALLSYMS
  74
  75 config ARCH_DEFCONFIG
  76         string
  77         default "arch/sh/configs/shx3_defconfig" if SUPERH32
  78         default "arch/sh/configs/cayman_defconfig" if SUPERH64
  79
  80 config RWSEM_GENERIC_SPINLOCK
  81         def_bool y
  82
  83 config RWSEM_XCHGADD_ALGORITHM
  84         bool
  85
  86 config GENERIC_BUG
  87         def_bool y
  88         depends on BUG && SUPERH32
  89
  90 config GENERIC_CSUM
  91         def_bool y
  92         depends on SUPERH64
  93
  94 config GENERIC_HWEIGHT
  95         def_bool y
  96
  97 config GENERIC_CALIBRATE_DELAY
  98         bool
  99
 100 config GENERIC_LOCKBREAK
 101         def_bool y
 102         depends on SMP && PREEMPT
 103
 104 config ARCH_SUSPEND_POSSIBLE
 105         def_bool n
 106
 107 config ARCH_HIBERNATION_POSSIBLE
 108         def_bool n
 109
 110 config SYS_SUPPORTS_APM_EMULATION
 111         bool
 112         select ARCH_SUSPEND_POSSIBLE
 113
 114 config SYS_SUPPORTS_HUGETLBFS
 115         bool
 116
 117 config SYS_SUPPORTS_SMP
 118         bool
 119
 120 config SYS_SUPPORTS_NUMA
 121         bool
 122
 123 config SYS_SUPPORTS_PCI
 124         bool
 125
 126 config STACKTRACE_SUPPORT
 127         def_bool y
 128
 129 config LOCKDEP_SUPPORT
 130         def_bool y
 131
 132 config HAVE_LATENCYTOP_SUPPORT
 133         def_bool y
 134
 135 config ARCH_HAS_ILOG2_U32
 136         def_bool n
 137
 138 config ARCH_HAS_ILOG2_U64
 139         def_bool n
 140
 141 config NO_IOPORT_MAP
 142         def_bool !PCI
 143         depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
 144                    !SH_HP6XX && !SH_SOLUTION_ENGINE
 145
 146 config IO_TRAPPED
 147         bool
 148
 149 config SWAP_IO_SPACE
 150         bool
 151
 152 config DMA_COHERENT
 153         bool
 154
 155 config DMA_NONCOHERENT
 156         def_bool !DMA_COHERENT
 157
 158 config NEED_DMA_MAP_STATE
 159         def_bool DMA_NONCOHERENT
 160
 161 config NEED_SG_DMA_LENGTH
 162         def_bool y
 163
 164 source "init/Kconfig"
 165
 166 source "kernel/Kconfig.freezer"
 167
 168 menu "System type"
 169
 170 #
 171 # Processor families
 172 #
 173 config CPU_SH2
 174         bool
 175         select SH_INTC
 176
 177 config CPU_SH2A
 178         bool
 179         select CPU_SH2
 180         select UNCACHED_MAPPING
 181
 182 config CPU_SH3
 183         bool
 184         select CPU_HAS_INTEVT
 185         select CPU_HAS_SR_RB
 186         select SH_INTC
 187         select SYS_SUPPORTS_SH_TMU
 188
 189 config CPU_SH4
 190         bool
 191         select CPU_HAS_INTEVT
 192         select CPU_HAS_SR_RB
 193         select CPU_HAS_FPU if !CPU_SH4AL_DSP
 194         select SH_INTC
 195         select SYS_SUPPORTS_SH_TMU
 196         select SYS_SUPPORTS_HUGETLBFS if MMU
 197
 198 config CPU_SH4A
 199         bool
 200         select CPU_SH4
 201
 202 config CPU_SH4AL_DSP
 203         bool
 204         select CPU_SH4A
 205         select CPU_HAS_DSP
 206
 207 config CPU_SH5
 208         bool
 209         select CPU_HAS_FPU
 210         select SYS_SUPPORTS_SH_TMU
 211         select SYS_SUPPORTS_HUGETLBFS if MMU
 212
 213 config CPU_SHX2
 214         bool
 215
 216 config CPU_SHX3
 217         bool
 218         select DMA_COHERENT
 219         select SYS_SUPPORTS_SMP
 220         select SYS_SUPPORTS_NUMA
 221
 222 config ARCH_SHMOBILE
 223         bool
 224         select ARCH_SUSPEND_POSSIBLE
 225         select PM_RUNTIME
 226
 227 config CPU_HAS_PMU
 228        depends on CPU_SH4 || CPU_SH4A
 229        default y
 230        bool
 231
 232 if SUPERH32
 233
 234 choice
 235         prompt "Processor sub-type selection"
 236
 237 #
 238 # Processor subtypes
 239 #
 240
 241 # SH-2 Processor Support
 242
 243 config CPU_SUBTYPE_SH7619
 244         bool "Support SH7619 processor"
 245         select CPU_SH2
 246         select SYS_SUPPORTS_SH_CMT
 247
 248 # SH-2A Processor Support
 249
 250 config CPU_SUBTYPE_SH7201
 251         bool "Support SH7201 processor"
 252         select CPU_SH2A
 253         select CPU_HAS_FPU
 254         select SYS_SUPPORTS_SH_MTU2
 255
 256 config CPU_SUBTYPE_SH7203
 257         bool "Support SH7203 processor"
 258         select CPU_SH2A
 259         select CPU_HAS_FPU
 260         select SYS_SUPPORTS_SH_CMT
 261         select SYS_SUPPORTS_SH_MTU2
 262         select ARCH_WANT_OPTIONAL_GPIOLIB
 263         select PINCTRL
 264
 265 config CPU_SUBTYPE_SH7206
 266         bool "Support SH7206 processor"
 267         select CPU_SH2A
 268         select SYS_SUPPORTS_SH_CMT
 269         select SYS_SUPPORTS_SH_MTU2
 270
 271 config CPU_SUBTYPE_SH7263
 272         bool "Support SH7263 processor"
 273         select CPU_SH2A
 274         select CPU_HAS_FPU
 275         select SYS_SUPPORTS_SH_CMT
 276         select SYS_SUPPORTS_SH_MTU2
 277
 278 config CPU_SUBTYPE_SH7264
 279         bool "Support SH7264 processor"
 280         select CPU_SH2A
 281         select CPU_HAS_FPU
 282         select SYS_SUPPORTS_SH_CMT
 283         select SYS_SUPPORTS_SH_MTU2
 284         select PINCTRL
 285
 286 config CPU_SUBTYPE_SH7269
 287         bool "Support SH7269 processor"
 288         select CPU_SH2A
 289         select CPU_HAS_FPU
 290         select SYS_SUPPORTS_SH_CMT
 291         select SYS_SUPPORTS_SH_MTU2
 292         select PINCTRL
 293
 294 config CPU_SUBTYPE_MXG
 295         bool "Support MX-G processor"
 296         select CPU_SH2A
 297         select SYS_SUPPORTS_SH_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_SH_CMT
 351         select ARCH_WANT_OPTIONAL_GPIOLIB
 352         select USB_OHCI_SH if USB_OHCI_HCD
 353         select PINCTRL
 354         help
 355           Select SH7720 if you have a SH3-DSP SH7720 CPU.
 356
 357 config CPU_SUBTYPE_SH7721
 358         bool "Support SH7721 processor"
 359         select CPU_SH3
 360         select CPU_HAS_DSP
 361         select SYS_SUPPORTS_SH_CMT
 362         select USB_OHCI_SH if USB_OHCI_HCD
 363         help
 364           Select SH7721 if you have a SH3-DSP SH7721 CPU.
 365
 366 # SH-4 Processor Support
 367
 368 config CPU_SUBTYPE_SH7750
 369         bool "Support SH7750 processor"
 370         select CPU_SH4
 371         help
 372           Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
 373
 374 config CPU_SUBTYPE_SH7091
 375         bool "Support SH7091 processor"
 376         select CPU_SH4
 377         help
 378           Select SH7091 if you have an SH-4 based Sega device (such as
 379           the Dreamcast, Naomi, and Naomi 2).
 380
 381 config CPU_SUBTYPE_SH7750R
 382         bool "Support SH7750R processor"
 383         select CPU_SH4
 384
 385 config CPU_SUBTYPE_SH7750S
 386         bool "Support SH7750S processor"
 387         select CPU_SH4
 388
 389 config CPU_SUBTYPE_SH7751
 390         bool "Support SH7751 processor"
 391         select CPU_SH4
 392         help
 393           Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
 394           or if you have a HD6417751R CPU.
 395
 396 config CPU_SUBTYPE_SH7751R
 397         bool "Support SH7751R processor"
 398         select CPU_SH4
 399
 400 config CPU_SUBTYPE_SH7760
 401         bool "Support SH7760 processor"
 402         select CPU_SH4
 403
 404 config CPU_SUBTYPE_SH4_202
 405         bool "Support SH4-202 processor"
 406         select CPU_SH4
 407
 408 # SH-4A Processor Support
 409
 410 config CPU_SUBTYPE_SH7723
 411         bool "Support SH7723 processor"
 412         select CPU_SH4A
 413         select CPU_SHX2
 414         select ARCH_SHMOBILE
 415         select ARCH_SPARSEMEM_ENABLE
 416         select SYS_SUPPORTS_SH_CMT
 417         select ARCH_WANT_OPTIONAL_GPIOLIB
 418         select PINCTRL
 419         help
 420           Select SH7723 if you have an SH-MobileR2 CPU.
 421
 422 config CPU_SUBTYPE_SH7724
 423         bool "Support SH7724 processor"
 424         select CPU_SH4A
 425         select CPU_SHX2
 426         select ARCH_SHMOBILE
 427         select ARCH_SPARSEMEM_ENABLE
 428         select SYS_SUPPORTS_SH_CMT
 429         select ARCH_WANT_OPTIONAL_GPIOLIB
 430         select PINCTRL
 431         help
 432           Select SH7724 if you have an SH-MobileR2R CPU.
 433
 434 config CPU_SUBTYPE_SH7734
 435         bool "Support SH7734 processor"
 436         select CPU_SH4A
 437         select CPU_SHX2
 438         select ARCH_WANT_OPTIONAL_GPIOLIB
 439         select PINCTRL
 440         help
 441           Select SH7734 if you have a SH4A SH7734 CPU.
 442
 443 config CPU_SUBTYPE_SH7757
 444         bool "Support SH7757 processor"
 445         select CPU_SH4A
 446         select CPU_SHX2
 447         select ARCH_WANT_OPTIONAL_GPIOLIB
 448         select PINCTRL
 449         help
 450           Select SH7757 if you have a SH4A SH7757 CPU.
 451
 452 config CPU_SUBTYPE_SH7763
 453         bool "Support SH7763 processor"
 454         select CPU_SH4A
 455         select USB_OHCI_SH if USB_OHCI_HCD
 456         help
 457           Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
 458
 459 config CPU_SUBTYPE_SH7770
 460         bool "Support SH7770 processor"
 461         select CPU_SH4A
 462
 463 config CPU_SUBTYPE_SH7780
 464         bool "Support SH7780 processor"
 465         select CPU_SH4A
 466
 467 config CPU_SUBTYPE_SH7785
 468         bool "Support SH7785 processor"
 469         select CPU_SH4A
 470         select CPU_SHX2
 471         select ARCH_SPARSEMEM_ENABLE
 472         select SYS_SUPPORTS_NUMA
 473         select ARCH_WANT_OPTIONAL_GPIOLIB
 474         select PINCTRL
 475
 476 config CPU_SUBTYPE_SH7786
 477         bool "Support SH7786 processor"
 478         select CPU_SH4A
 479         select CPU_SHX3
 480         select CPU_HAS_PTEAEX
 481         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 482         select ARCH_WANT_OPTIONAL_GPIOLIB
 483         select USB_OHCI_SH if USB_OHCI_HCD
 484         select USB_EHCI_SH if USB_EHCI_HCD
 485         select PINCTRL
 486
 487 config CPU_SUBTYPE_SHX3
 488         bool "Support SH-X3 processor"
 489         select CPU_SH4A
 490         select CPU_SHX3
 491         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 492         select ARCH_REQUIRE_GPIOLIB
 493         select PINCTRL
 494
 495 # SH4AL-DSP Processor Support
 496
 497 config CPU_SUBTYPE_SH7343
 498         bool "Support SH7343 processor"
 499         select CPU_SH4AL_DSP
 500         select ARCH_SHMOBILE
 501         select SYS_SUPPORTS_SH_CMT
 502
 503 config CPU_SUBTYPE_SH7722
 504         bool "Support SH7722 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_SH_CMT
 511         select ARCH_WANT_OPTIONAL_GPIOLIB
 512         select PINCTRL
 513
 514 config CPU_SUBTYPE_SH7366
 515         bool "Support SH7366 processor"
 516         select CPU_SH4AL_DSP
 517         select CPU_SHX2
 518         select ARCH_SHMOBILE
 519         select ARCH_SPARSEMEM_ENABLE
 520         select SYS_SUPPORTS_NUMA
 521         select SYS_SUPPORTS_SH_CMT
 522
 523 endchoice
 524
 525 endif
 526
 527 if SUPERH64
 528
 529 choice
 530         prompt "Processor sub-type selection"
 531
 532 # SH-5 Processor Support
 533
 534 config CPU_SUBTYPE_SH5_101
 535         bool "Support SH5-101 processor"
 536         select CPU_SH5
 537
 538 config CPU_SUBTYPE_SH5_103
 539         bool "Support SH5-103 processor"
 540         select CPU_SH5
 541
 542 endchoice
 543
 544 endif
 545
 546 source "arch/sh/mm/Kconfig"
 547
 548 source "arch/sh/Kconfig.cpu"
 549
 550 source "arch/sh/boards/Kconfig"
 551
 552 menu "Timer and clock configuration"
 553
 554 config SH_PCLK_FREQ
 555         int "Peripheral clock frequency (in Hz)"
 556         depends on SH_CLK_CPG_LEGACY
 557         default "31250000" if CPU_SUBTYPE_SH7619
 558         default "33333333" if CPU_SUBTYPE_SH7770 || \
 559                               CPU_SUBTYPE_SH7760 || \
 560                               CPU_SUBTYPE_SH7705 || \
 561                               CPU_SUBTYPE_SH7203 || \
 562                               CPU_SUBTYPE_SH7206 || \
 563                               CPU_SUBTYPE_SH7263 || \
 564                               CPU_SUBTYPE_MXG
 565         default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
 566         default "66000000" if CPU_SUBTYPE_SH4_202
 567         default "50000000"
 568         help
 569           This option is used to specify the peripheral clock frequency.
 570           This is necessary for determining the reference clock value on
 571           platforms lacking an RTC.
 572
 573 config SH_CLK_CPG
 574         def_bool y
 575
 576 config SH_CLK_CPG_LEGACY
 577         depends on SH_CLK_CPG
 578         def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
 579                       !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
 580                       !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
 581                       !CPU_SUBTYPE_SH7269
 582
 583 endmenu
 584
 585 menu "CPU Frequency scaling"
 586 source "drivers/cpufreq/Kconfig"
 587 endmenu
 588
 589 source "arch/sh/drivers/Kconfig"
 590
 591 endmenu
 592
 593 menu "Kernel features"
 594
 595 source kernel/Kconfig.hz
 596
 597 config KEXEC
 598         bool "kexec system call (EXPERIMENTAL)"
 599         depends on SUPERH32 && MMU
 600         help
 601           kexec is a system call that implements the ability to shutdown your
 602           current kernel, and to start another kernel.  It is like a reboot
 603           but it is independent of the system firmware.  And like a reboot
 604           you can start any kernel with it, not just Linux.
 605
 606           The name comes from the similarity to the exec system call.
 607
 608           It is an ongoing process to be certain the hardware in a machine
 609           is properly shutdown, so do not be surprised if this code does not
 610           initially work for you.  As of this writing the exact hardware
 611           interface is strongly in flux, so no good recommendation can be
 612           made.
 613
 614 config CRASH_DUMP
 615         bool "kernel crash dumps (EXPERIMENTAL)"
 616         depends on SUPERH32 && BROKEN_ON_SMP
 617         help
 618           Generate crash dump after being started by kexec.
 619           This should be normally only set in special crash dump kernels
 620           which are loaded in the main kernel with kexec-tools into
 621           a specially reserved region and then later executed after
 622           a crash by kdump/kexec. The crash dump kernel must be compiled
 623           to a memory address not used by the main kernel using
 624           PHYSICAL_START.
 625
 626           For more details see Documentation/kdump/kdump.txt
 627
 628 config KEXEC_JUMP
 629         bool "kexec jump (EXPERIMENTAL)"
 630         depends on SUPERH32 && KEXEC && HIBERNATION
 631         help
 632           Jump between original kernel and kexeced kernel and invoke
 633           code via KEXEC
 634
 635 config PHYSICAL_START
 636         hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
 637         default MEMORY_START
 638         ---help---
 639           This gives the physical address where the kernel is loaded
 640           and is ordinarily the same as MEMORY_START.
 641
 642           Different values are primarily used in the case of kexec on panic
 643           where the fail safe kernel needs to run at a different address
 644           than the panic-ed kernel.
 645
 646 config SECCOMP
 647         bool "Enable seccomp to safely compute untrusted bytecode"
 648         depends on PROC_FS
 649         help
 650           This kernel feature is useful for number crunching applications
 651           that may need to compute untrusted bytecode during their
 652           execution. By using pipes or other transports made available to
 653           the process as file descriptors supporting the read/write
 654           syscalls, it's possible to isolate those applications in
 655           their own address space using seccomp. Once seccomp is
 656           enabled via prctl, it cannot be disabled and the task is only
 657           allowed to execute a few safe syscalls defined by each seccomp
 658           mode.
 659
 660           If unsure, say N.
 661
 662 config SMP
 663         bool "Symmetric multi-processing support"
 664         depends on SYS_SUPPORTS_SMP
 665         ---help---
 666           This enables support for systems with more than one CPU. If you have
 667           a system with only one CPU, say N. If you have a system with more
 668           than one CPU, say Y.
 669
 670           If you say N here, the kernel will run on uni- and multiprocessor
 671           machines, but will use only one CPU of a multiprocessor machine. If
 672           you say Y here, the kernel will run on many, but not all,
 673           uniprocessor machines. On a uniprocessor machine, the kernel
 674           will run faster if you say N here.
 675
 676           People using multiprocessor machines who say Y here should also say
 677           Y to "Enhanced Real Time Clock Support", below.
 678
 679           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 680           available at <http://www.tldp.org/docs.html#howto>.
 681
 682           If you don't know what to do here, say N.
 683
 684 config NR_CPUS
 685         int "Maximum number of CPUs (2-32)"
 686         range 2 32
 687         depends on SMP
 688         default "4" if CPU_SUBTYPE_SHX3
 689         default "2"
 690         help
 691           This allows you to specify the maximum number of CPUs which this
 692           kernel will support.  The maximum supported value is 32 and the
 693           minimum value which makes sense is 2.
 694
 695           This is purely to save memory - each supported CPU adds
 696           approximately eight kilobytes to the kernel image.
 697
 698 config HOTPLUG_CPU
 699         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 700         depends on SMP
 701         help
 702           Say Y here to experiment with turning CPUs off and on.  CPUs
 703           can be controlled through /sys/devices/system/cpu.
 704
 705 source "kernel/Kconfig.preempt"
 706
 707 config GUSA
 708         def_bool y
 709         depends on !SMP && SUPERH32
 710         help
 711           This enables support for gUSA (general UserSpace Atomicity).
 712           This is the default implementation for both UP and non-ll/sc
 713           CPUs, and is used by the libc, amongst others.
 714
 715           For additional information, design information can be found
 716           in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
 717
 718           This should only be disabled for special cases where alternate
 719           atomicity implementations exist.
 720
 721 config GUSA_RB
 722         bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
 723         depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
 724         help
 725           Enabling this option will allow the kernel to implement some
 726           atomic operations using a software implementation of load-locked/
 727           store-conditional (LLSC). On machines which do not have hardware
 728           LLSC, this should be more efficient than the other alternative of
 729           disabling interrupts around the atomic sequence.
 730
 731 config HW_PERF_EVENTS
 732         bool "Enable hardware performance counter support for perf events"
 733         depends on PERF_EVENTS && CPU_HAS_PMU
 734         default y
 735         help
 736           Enable hardware performance counter support for perf events. If
 737           disabled, perf events will use software events only.
 738
 739 source "drivers/sh/Kconfig"
 740
 741 endmenu
 742
 743 menu "Boot options"
 744
 745 config ZERO_PAGE_OFFSET
 746         hex
 747         default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
 748                                 SH_7751_SOLUTION_ENGINE
 749         default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
 750         default "0x00002000" if PAGE_SIZE_8KB
 751         default "0x00001000"
 752         help
 753           This sets the default offset of zero page.
 754
 755 config BOOT_LINK_OFFSET
 756         hex
 757         default "0x00210000" if SH_SHMIN
 758         default "0x00400000" if SH_CAYMAN
 759         default "0x00810000" if SH_7780_SOLUTION_ENGINE
 760         default "0x009e0000" if SH_TITAN
 761         default "0x01800000" if SH_SDK7780
 762         default "0x02000000" if SH_EDOSK7760
 763         default "0x00800000"
 764         help
 765           This option allows you to set the link address offset of the zImage.
 766           This can be useful if you are on a board which has a small amount of
 767           memory.
 768
 769 config ENTRY_OFFSET
 770         hex
 771         default "0x00001000" if PAGE_SIZE_4KB
 772         default "0x00002000" if PAGE_SIZE_8KB
 773         default "0x00004000" if PAGE_SIZE_16KB
 774         default "0x00010000" if PAGE_SIZE_64KB
 775         default "0x00000000"
 776
 777 config ROMIMAGE_MMCIF
 778         bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
 779         depends on CPU_SUBTYPE_SH7724
 780         help
 781           Say Y here to include experimental MMCIF loading code in
 782           romImage. With this enabled it is possible to write the romImage
 783           kernel image to an MMC card and boot the kernel straight from
 784           the reset vector. At reset the processor Mask ROM will load the
 785           first part of the romImage which in turn loads the rest the kernel
 786           image to RAM using the MMCIF hardware block.
 787
 788 choice
 789         prompt "Kernel command line"
 790         optional
 791         default CMDLINE_OVERWRITE
 792         help
 793           Setting this option allows the kernel command line arguments
 794           to be set.
 795
 796 config CMDLINE_OVERWRITE
 797         bool "Overwrite bootloader kernel arguments"
 798         help
 799           Given string will overwrite any arguments passed in by
 800           a bootloader.
 801
 802 config CMDLINE_EXTEND
 803         bool "Extend bootloader kernel arguments"
 804         help
 805           Given string will be concatenated with arguments passed in
 806           by a bootloader.
 807
 808 endchoice
 809
 810 config CMDLINE
 811         string "Kernel command line arguments string"
 812         depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
 813         default "console=ttySC1,115200"
 814
 815 endmenu
 816
 817 menu "Bus options"
 818
 819 config SUPERHYWAY
 820         tristate "SuperHyway Bus support"
 821         depends on CPU_SUBTYPE_SH4_202
 822
 823 config MAPLE
 824         bool "Maple Bus support"
 825         depends on SH_DREAMCAST
 826         help
 827          The Maple Bus is SEGA's serial communication bus for peripherals
 828          on the Dreamcast. Without this bus support you won't be able to
 829          get your Dreamcast keyboard etc to work, so most users
 830          probably want to say 'Y' here, unless you are only using the
 831          Dreamcast with a serial line terminal or a remote network
 832          connection.
 833
 834 config PCI
 835         bool "PCI support"
 836         depends on SYS_SUPPORTS_PCI
 837         select PCI_DOMAINS
 838         select GENERIC_PCI_IOMAP
 839         select NO_GENERIC_PCI_IOPORT_MAP
 840         help
 841           Find out whether you have a PCI motherboard. PCI is the name of a
 842           bus system, i.e. the way the CPU talks to the other stuff inside
 843           your box. If you have PCI, say Y, otherwise N.
 844
 845 config PCI_DOMAINS
 846         bool
 847
 848 source "drivers/pci/pcie/Kconfig"
 849
 850 source "drivers/pci/Kconfig"
 851
 852 source "drivers/pcmcia/Kconfig"
 853
 854 source "drivers/pci/hotplug/Kconfig"
 855
 856 endmenu
 857
 858 menu "Executable file formats"
 859
 860 source "fs/Kconfig.binfmt"
 861
 862 endmenu
 863
 864 menu "Power management options (EXPERIMENTAL)"
 865
 866 source "kernel/power/Kconfig"
 867
 868 source "drivers/cpuidle/Kconfig"
 869
 870 endmenu
 871
 872 source "net/Kconfig"
 873
 874 source "drivers/Kconfig"
 875
 876 source "fs/Kconfig"
 877
 878 source "arch/sh/Kconfig.debug"
 879
 880 source "security/Kconfig"
 881
 882 source "crypto/Kconfig"
 883
 884 source "lib/Kconfig"