arch/sh/Kconfig

   1 config SUPERH
   2         def_bool y
   3         select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
   4         select ARCH_MIGHT_HAVE_PC_PARPORT
   5         select HAVE_PATA_PLATFORM
   6         select CLKDEV_LOOKUP
   7         select HAVE_IDE if HAS_IOPORT_MAP
   8         select HAVE_MEMBLOCK
   9         select HAVE_MEMBLOCK_NODE_MAP
  10         select ARCH_DISCARD_MEMBLOCK
  11         select HAVE_OPROFILE
  12         select HAVE_GENERIC_DMA_COHERENT
  13         select HAVE_ARCH_TRACEHOOK
  14         select HAVE_DMA_API_DEBUG
  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 ARCH_HAS_GCOV_PROFILE_ALL
  20         select PERF_USE_VMALLOC
  21         select HAVE_DEBUG_KMEMLEAK
  22         select HAVE_KERNEL_GZIP
  23         select HAVE_KERNEL_BZIP2
  24         select HAVE_KERNEL_LZMA
  25         select HAVE_KERNEL_XZ
  26         select HAVE_KERNEL_LZO
  27         select HAVE_UID16
  28         select ARCH_WANT_IPC_PARSE_VERSION
  29         select HAVE_SYSCALL_TRACEPOINTS
  30         select HAVE_REGS_AND_STACK_ACCESS_API
  31         select MAY_HAVE_SPARSE_IRQ
  32         select IRQ_FORCED_THREADING
  33         select RTC_LIB
  34         select GENERIC_ATOMIC64
  35         select GENERIC_IRQ_SHOW
  36         select GENERIC_SMP_IDLE_THREAD
  37         select GENERIC_IDLE_POLL_SETUP
  38         select GENERIC_CLOCKEVENTS
  39         select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
  40         select GENERIC_STRNCPY_FROM_USER
  41         select GENERIC_STRNLEN_USER
  42         select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
  43         select MODULES_USE_ELF_RELA
  44         select OLD_SIGSUSPEND
  45         select OLD_SIGACTION
  46         select HAVE_ARCH_AUDITSYSCALL
  47         select HAVE_NMI
  48         help
  49           The SuperH is a RISC processor targeted for use in embedded systems
  50           and consumer electronics; it was also used in the Sega Dreamcast
  51           gaming console.  The SuperH port has a home page at
  52           <http://www.linux-sh.org/>.
  53
  54 config SUPERH32
  55         def_bool ARCH = "sh"
  56         select HAVE_KPROBES
  57         select HAVE_KRETPROBES
  58         select HAVE_IOREMAP_PROT if MMU && !X2TLB
  59         select HAVE_FUNCTION_TRACER
  60         select HAVE_FTRACE_MCOUNT_RECORD
  61         select HAVE_DYNAMIC_FTRACE
  62         select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
  63         select ARCH_WANT_IPC_PARSE_VERSION
  64         select HAVE_FUNCTION_GRAPH_TRACER
  65         select HAVE_ARCH_KGDB
  66         select HAVE_HW_BREAKPOINT
  67         select HAVE_MIXED_BREAKPOINTS_REGS
  68         select PERF_EVENTS
  69         select ARCH_HIBERNATION_POSSIBLE if MMU
  70         select SPARSE_IRQ
  71         select HAVE_CC_STACKPROTECTOR
  72
  73 config SUPERH64
  74         def_bool ARCH = "sh64"
  75         select HAVE_EXIT_THREAD
  76         select KALLSYMS
  77
  78 config ARCH_DEFCONFIG
  79         string
  80         default "arch/sh/configs/shx3_defconfig" if SUPERH32
  81         default "arch/sh/configs/cayman_defconfig" if SUPERH64
  82
  83 config RWSEM_GENERIC_SPINLOCK
  84         def_bool y
  85
  86 config RWSEM_XCHGADD_ALGORITHM
  87         bool
  88
  89 config GENERIC_BUG
  90         def_bool y
  91         depends on BUG && SUPERH32
  92
  93 config GENERIC_CSUM
  94         def_bool y
  95         depends on SUPERH64
  96
  97 config GENERIC_HWEIGHT
  98         def_bool y
  99
 100 config GENERIC_CALIBRATE_DELAY
 101         bool
 102
 103 config GENERIC_LOCKBREAK
 104         def_bool y
 105         depends on SMP && PREEMPT
 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 STACKTRACE_SUPPORT
 130         def_bool y
 131
 132 config LOCKDEP_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 config PGTABLE_LEVELS
 165         default 3 if X2TLB
 166         default 2
 167
 168 source "init/Kconfig"
 169
 170 source "kernel/Kconfig.freezer"
 171
 172 menu "System type"
 173
 174 #
 175 # Processor families
 176 #
 177 config CPU_SH2
 178         bool
 179         select SH_INTC
 180
 181 config CPU_SH2A
 182         bool
 183         select CPU_SH2
 184         select UNCACHED_MAPPING
 185
 186 config CPU_SH3
 187         bool
 188         select CPU_HAS_INTEVT
 189         select CPU_HAS_SR_RB
 190         select SH_INTC
 191         select SYS_SUPPORTS_SH_TMU
 192
 193 config CPU_SH4
 194         bool
 195         select CPU_HAS_INTEVT
 196         select CPU_HAS_SR_RB
 197         select CPU_HAS_FPU if !CPU_SH4AL_DSP
 198         select SH_INTC
 199         select SYS_SUPPORTS_SH_TMU
 200         select SYS_SUPPORTS_HUGETLBFS if MMU
 201
 202 config CPU_SH4A
 203         bool
 204         select CPU_SH4
 205
 206 config CPU_SH4AL_DSP
 207         bool
 208         select CPU_SH4A
 209         select CPU_HAS_DSP
 210
 211 config CPU_SH5
 212         bool
 213         select CPU_HAS_FPU
 214         select SYS_SUPPORTS_SH_TMU
 215         select SYS_SUPPORTS_HUGETLBFS if MMU
 216
 217 config CPU_SHX2
 218         bool
 219
 220 config CPU_SHX3
 221         bool
 222         select DMA_COHERENT
 223         select SYS_SUPPORTS_SMP
 224         select SYS_SUPPORTS_NUMA
 225
 226 config ARCH_SHMOBILE
 227         bool
 228         select ARCH_SUSPEND_POSSIBLE
 229         select PM
 230
 231 config CPU_HAS_PMU
 232        depends on CPU_SH4 || CPU_SH4A
 233        default y
 234        bool
 235
 236 if SUPERH32
 237
 238 choice
 239         prompt "Processor sub-type selection"
 240
 241 #
 242 # Processor subtypes
 243 #
 244
 245 # SH-2 Processor Support
 246
 247 config CPU_SUBTYPE_SH7619
 248         bool "Support SH7619 processor"
 249         select CPU_SH2
 250         select SYS_SUPPORTS_SH_CMT
 251
 252 # SH-2A Processor Support
 253
 254 config CPU_SUBTYPE_SH7201
 255         bool "Support SH7201 processor"
 256         select CPU_SH2A
 257         select CPU_HAS_FPU
 258         select SYS_SUPPORTS_SH_MTU2
 259
 260 config CPU_SUBTYPE_SH7203
 261         bool "Support SH7203 processor"
 262         select CPU_SH2A
 263         select CPU_HAS_FPU
 264         select SYS_SUPPORTS_SH_CMT
 265         select SYS_SUPPORTS_SH_MTU2
 266         select ARCH_WANT_OPTIONAL_GPIOLIB
 267         select PINCTRL
 268
 269 config CPU_SUBTYPE_SH7206
 270         bool "Support SH7206 processor"
 271         select CPU_SH2A
 272         select SYS_SUPPORTS_SH_CMT
 273         select SYS_SUPPORTS_SH_MTU2
 274
 275 config CPU_SUBTYPE_SH7263
 276         bool "Support SH7263 processor"
 277         select CPU_SH2A
 278         select CPU_HAS_FPU
 279         select SYS_SUPPORTS_SH_CMT
 280         select SYS_SUPPORTS_SH_MTU2
 281
 282 config CPU_SUBTYPE_SH7264
 283         bool "Support SH7264 processor"
 284         select CPU_SH2A
 285         select CPU_HAS_FPU
 286         select SYS_SUPPORTS_SH_CMT
 287         select SYS_SUPPORTS_SH_MTU2
 288         select PINCTRL
 289
 290 config CPU_SUBTYPE_SH7269
 291         bool "Support SH7269 processor"
 292         select CPU_SH2A
 293         select CPU_HAS_FPU
 294         select SYS_SUPPORTS_SH_CMT
 295         select SYS_SUPPORTS_SH_MTU2
 296         select PINCTRL
 297
 298 config CPU_SUBTYPE_MXG
 299         bool "Support MX-G processor"
 300         select CPU_SH2A
 301         select SYS_SUPPORTS_SH_MTU2
 302         help
 303           Select MX-G if running on an R8A03022BG part.
 304
 305 # SH-3 Processor Support
 306
 307 config CPU_SUBTYPE_SH7705
 308         bool "Support SH7705 processor"
 309         select CPU_SH3
 310
 311 config CPU_SUBTYPE_SH7706
 312         bool "Support SH7706 processor"
 313         select CPU_SH3
 314         help
 315           Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
 316
 317 config CPU_SUBTYPE_SH7707
 318         bool "Support SH7707 processor"
 319         select CPU_SH3
 320         help
 321           Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
 322
 323 config CPU_SUBTYPE_SH7708
 324         bool "Support SH7708 processor"
 325         select CPU_SH3
 326         help
 327           Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
 328           if you have a 100 Mhz SH-3 HD6417708R CPU.
 329
 330 config CPU_SUBTYPE_SH7709
 331         bool "Support SH7709 processor"
 332         select CPU_SH3
 333         help
 334           Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
 335
 336 config CPU_SUBTYPE_SH7710
 337         bool "Support SH7710 processor"
 338         select CPU_SH3
 339         select CPU_HAS_DSP
 340         help
 341           Select SH7710 if you have a SH3-DSP SH7710 CPU.
 342
 343 config CPU_SUBTYPE_SH7712
 344         bool "Support SH7712 processor"
 345         select CPU_SH3
 346         select CPU_HAS_DSP
 347         help
 348           Select SH7712 if you have a SH3-DSP SH7712 CPU.
 349
 350 config CPU_SUBTYPE_SH7720
 351         bool "Support SH7720 processor"
 352         select CPU_SH3
 353         select CPU_HAS_DSP
 354         select SYS_SUPPORTS_SH_CMT
 355         select ARCH_WANT_OPTIONAL_GPIOLIB
 356         select USB_OHCI_SH if USB_OHCI_HCD
 357         select PINCTRL
 358         help
 359           Select SH7720 if you have a SH3-DSP SH7720 CPU.
 360
 361 config CPU_SUBTYPE_SH7721
 362         bool "Support SH7721 processor"
 363         select CPU_SH3
 364         select CPU_HAS_DSP
 365         select SYS_SUPPORTS_SH_CMT
 366         select USB_OHCI_SH if USB_OHCI_HCD
 367         help
 368           Select SH7721 if you have a SH3-DSP SH7721 CPU.
 369
 370 # SH-4 Processor Support
 371
 372 config CPU_SUBTYPE_SH7750
 373         bool "Support SH7750 processor"
 374         select CPU_SH4
 375         help
 376           Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
 377
 378 config CPU_SUBTYPE_SH7091
 379         bool "Support SH7091 processor"
 380         select CPU_SH4
 381         help
 382           Select SH7091 if you have an SH-4 based Sega device (such as
 383           the Dreamcast, Naomi, and Naomi 2).
 384
 385 config CPU_SUBTYPE_SH7750R
 386         bool "Support SH7750R processor"
 387         select CPU_SH4
 388
 389 config CPU_SUBTYPE_SH7750S
 390         bool "Support SH7750S processor"
 391         select CPU_SH4
 392
 393 config CPU_SUBTYPE_SH7751
 394         bool "Support SH7751 processor"
 395         select CPU_SH4
 396         help
 397           Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
 398           or if you have a HD6417751R CPU.
 399
 400 config CPU_SUBTYPE_SH7751R
 401         bool "Support SH7751R processor"
 402         select CPU_SH4
 403
 404 config CPU_SUBTYPE_SH7760
 405         bool "Support SH7760 processor"
 406         select CPU_SH4
 407
 408 config CPU_SUBTYPE_SH4_202
 409         bool "Support SH4-202 processor"
 410         select CPU_SH4
 411
 412 # SH-4A Processor Support
 413
 414 config CPU_SUBTYPE_SH7723
 415         bool "Support SH7723 processor"
 416         select CPU_SH4A
 417         select CPU_SHX2
 418         select ARCH_SHMOBILE
 419         select ARCH_SPARSEMEM_ENABLE
 420         select SYS_SUPPORTS_SH_CMT
 421         select ARCH_WANT_OPTIONAL_GPIOLIB
 422         select PINCTRL
 423         help
 424           Select SH7723 if you have an SH-MobileR2 CPU.
 425
 426 config CPU_SUBTYPE_SH7724
 427         bool "Support SH7724 processor"
 428         select CPU_SH4A
 429         select CPU_SHX2
 430         select ARCH_SHMOBILE
 431         select ARCH_SPARSEMEM_ENABLE
 432         select SYS_SUPPORTS_SH_CMT
 433         select ARCH_WANT_OPTIONAL_GPIOLIB
 434         select PINCTRL
 435         help
 436           Select SH7724 if you have an SH-MobileR2R CPU.
 437
 438 config CPU_SUBTYPE_SH7734
 439         bool "Support SH7734 processor"
 440         select CPU_SH4A
 441         select CPU_SHX2
 442         select ARCH_WANT_OPTIONAL_GPIOLIB
 443         select PINCTRL
 444         help
 445           Select SH7734 if you have a SH4A SH7734 CPU.
 446
 447 config CPU_SUBTYPE_SH7757
 448         bool "Support SH7757 processor"
 449         select CPU_SH4A
 450         select CPU_SHX2
 451         select ARCH_WANT_OPTIONAL_GPIOLIB
 452         select PINCTRL
 453         help
 454           Select SH7757 if you have a SH4A SH7757 CPU.
 455
 456 config CPU_SUBTYPE_SH7763
 457         bool "Support SH7763 processor"
 458         select CPU_SH4A
 459         select USB_OHCI_SH if USB_OHCI_HCD
 460         help
 461           Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
 462
 463 config CPU_SUBTYPE_SH7770
 464         bool "Support SH7770 processor"
 465         select CPU_SH4A
 466
 467 config CPU_SUBTYPE_SH7780
 468         bool "Support SH7780 processor"
 469         select CPU_SH4A
 470
 471 config CPU_SUBTYPE_SH7785
 472         bool "Support SH7785 processor"
 473         select CPU_SH4A
 474         select CPU_SHX2
 475         select ARCH_SPARSEMEM_ENABLE
 476         select SYS_SUPPORTS_NUMA
 477         select ARCH_WANT_OPTIONAL_GPIOLIB
 478         select PINCTRL
 479
 480 config CPU_SUBTYPE_SH7786
 481         bool "Support SH7786 processor"
 482         select CPU_SH4A
 483         select CPU_SHX3
 484         select CPU_HAS_PTEAEX
 485         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 486         select ARCH_WANT_OPTIONAL_GPIOLIB
 487         select USB_OHCI_SH if USB_OHCI_HCD
 488         select USB_EHCI_SH if USB_EHCI_HCD
 489         select PINCTRL
 490
 491 config CPU_SUBTYPE_SHX3
 492         bool "Support SH-X3 processor"
 493         select CPU_SH4A
 494         select CPU_SHX3
 495         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 496         select ARCH_REQUIRE_GPIOLIB
 497         select PINCTRL
 498
 499 # SH4AL-DSP Processor Support
 500
 501 config CPU_SUBTYPE_SH7343
 502         bool "Support SH7343 processor"
 503         select CPU_SH4AL_DSP
 504         select ARCH_SHMOBILE
 505         select SYS_SUPPORTS_SH_CMT
 506
 507 config CPU_SUBTYPE_SH7722
 508         bool "Support SH7722 processor"
 509         select CPU_SH4AL_DSP
 510         select CPU_SHX2
 511         select ARCH_SHMOBILE
 512         select ARCH_SPARSEMEM_ENABLE
 513         select SYS_SUPPORTS_NUMA
 514         select SYS_SUPPORTS_SH_CMT
 515         select ARCH_WANT_OPTIONAL_GPIOLIB
 516         select PINCTRL
 517
 518 config CPU_SUBTYPE_SH7366
 519         bool "Support SH7366 processor"
 520         select CPU_SH4AL_DSP
 521         select CPU_SHX2
 522         select ARCH_SHMOBILE
 523         select ARCH_SPARSEMEM_ENABLE
 524         select SYS_SUPPORTS_NUMA
 525         select SYS_SUPPORTS_SH_CMT
 526
 527 endchoice
 528
 529 endif
 530
 531 if SUPERH64
 532
 533 choice
 534         prompt "Processor sub-type selection"
 535
 536 # SH-5 Processor Support
 537
 538 config CPU_SUBTYPE_SH5_101
 539         bool "Support SH5-101 processor"
 540         select CPU_SH5
 541
 542 config CPU_SUBTYPE_SH5_103
 543         bool "Support SH5-103 processor"
 544         select CPU_SH5
 545
 546 endchoice
 547
 548 endif
 549
 550 source "arch/sh/mm/Kconfig"
 551
 552 source "arch/sh/Kconfig.cpu"
 553
 554 source "arch/sh/boards/Kconfig"
 555
 556 menu "Timer and clock configuration"
 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                       !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
 585                       !CPU_SUBTYPE_SH7269
 586
 587 endmenu
 588
 589 menu "CPU Frequency scaling"
 590 source "drivers/cpufreq/Kconfig"
 591 endmenu
 592
 593 source "arch/sh/drivers/Kconfig"
 594
 595 endmenu
 596
 597 menu "Kernel features"
 598
 599 source kernel/Kconfig.hz
 600
 601 config KEXEC
 602         bool "kexec system call (EXPERIMENTAL)"
 603         depends on SUPERH32 && MMU
 604         select KEXEC_CORE
 605         help
 606           kexec is a system call that implements the ability to shutdown your
 607           current kernel, and to start another kernel.  It is like a reboot
 608           but it is independent of the system firmware.  And like a reboot
 609           you can start any kernel with it, not just Linux.
 610
 611           The name comes from the similarity to the exec system call.
 612
 613           It is an ongoing process to be certain the hardware in a machine
 614           is properly shutdown, so do not be surprised if this code does not
 615           initially work for you.  As of this writing the exact hardware
 616           interface is strongly in flux, so no good recommendation can be
 617           made.
 618
 619 config CRASH_DUMP
 620         bool "kernel crash dumps (EXPERIMENTAL)"
 621         depends on SUPERH32 && BROKEN_ON_SMP
 622         help
 623           Generate crash dump after being started by kexec.
 624           This should be normally only set in special crash dump kernels
 625           which are loaded in the main kernel with kexec-tools into
 626           a specially reserved region and then later executed after
 627           a crash by kdump/kexec. The crash dump kernel must be compiled
 628           to a memory address not used by the main kernel using
 629           PHYSICAL_START.
 630
 631           For more details see Documentation/kdump/kdump.txt
 632
 633 config KEXEC_JUMP
 634         bool "kexec jump (EXPERIMENTAL)"
 635         depends on SUPERH32 && KEXEC && HIBERNATION
 636         help
 637           Jump between original kernel and kexeced kernel and invoke
 638           code via KEXEC
 639
 640 config PHYSICAL_START
 641         hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
 642         default MEMORY_START
 643         ---help---
 644           This gives the physical address where the kernel is loaded
 645           and is ordinarily the same as MEMORY_START.
 646
 647           Different values are primarily used in the case of kexec on panic
 648           where the fail safe kernel needs to run at a different address
 649           than the panic-ed kernel.
 650
 651 config SECCOMP
 652         bool "Enable seccomp to safely compute untrusted bytecode"
 653         depends on PROC_FS
 654         help
 655           This kernel feature is useful for number crunching applications
 656           that may need to compute untrusted bytecode during their
 657           execution. By using pipes or other transports made available to
 658           the process as file descriptors supporting the read/write
 659           syscalls, it's possible to isolate those applications in
 660           their own address space using seccomp. Once seccomp is
 661           enabled via prctl, it cannot be disabled and the task is only
 662           allowed to execute a few safe syscalls defined by each seccomp
 663           mode.
 664
 665           If unsure, say N.
 666
 667 config SMP
 668         bool "Symmetric multi-processing support"
 669         depends on SYS_SUPPORTS_SMP
 670         ---help---
 671           This enables support for systems with more than one CPU. If you have
 672           a system with only one CPU, say N. If you have a system with more
 673           than one CPU, say Y.
 674
 675           If you say N here, the kernel will run on uni- and multiprocessor
 676           machines, but will use only one CPU of a multiprocessor machine. If
 677           you say Y here, the kernel will run on many, but not all,
 678           uniprocessor machines. On a uniprocessor machine, the kernel
 679           will run faster if you say N here.
 680
 681           People using multiprocessor machines who say Y here should also say
 682           Y to "Enhanced Real Time Clock Support", below.
 683
 684           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 685           available at <http://www.tldp.org/docs.html#howto>.
 686
 687           If you don't know what to do here, say N.
 688
 689 config NR_CPUS
 690         int "Maximum number of CPUs (2-32)"
 691         range 2 32
 692         depends on SMP
 693         default "4" if CPU_SUBTYPE_SHX3
 694         default "2"
 695         help
 696           This allows you to specify the maximum number of CPUs which this
 697           kernel will support.  The maximum supported value is 32 and the
 698           minimum value which makes sense is 2.
 699
 700           This is purely to save memory - each supported CPU adds
 701           approximately eight kilobytes to the kernel image.
 702
 703 config HOTPLUG_CPU
 704         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 705         depends on SMP
 706         help
 707           Say Y here to experiment with turning CPUs off and on.  CPUs
 708           can be controlled through /sys/devices/system/cpu.
 709
 710 source "kernel/Kconfig.preempt"
 711
 712 config GUSA
 713         def_bool y
 714         depends on !SMP && SUPERH32
 715         help
 716           This enables support for gUSA (general UserSpace Atomicity).
 717           This is the default implementation for both UP and non-ll/sc
 718           CPUs, and is used by the libc, amongst others.
 719
 720           For additional information, design information can be found
 721           in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
 722
 723           This should only be disabled for special cases where alternate
 724           atomicity implementations exist.
 725
 726 config GUSA_RB
 727         bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
 728         depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
 729         help
 730           Enabling this option will allow the kernel to implement some
 731           atomic operations using a software implementation of load-locked/
 732           store-conditional (LLSC). On machines which do not have hardware
 733           LLSC, this should be more efficient than the other alternative of
 734           disabling interrupts around the atomic sequence.
 735
 736 config HW_PERF_EVENTS
 737         bool "Enable hardware performance counter support for perf events"
 738         depends on PERF_EVENTS && CPU_HAS_PMU
 739         default y
 740         help
 741           Enable hardware performance counter support for perf events. If
 742           disabled, perf events will use software events only.
 743
 744 source "drivers/sh/Kconfig"
 745
 746 endmenu
 747
 748 menu "Boot options"
 749
 750 config ZERO_PAGE_OFFSET
 751         hex
 752         default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
 753                                 SH_7751_SOLUTION_ENGINE
 754         default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
 755         default "0x00002000" if PAGE_SIZE_8KB
 756         default "0x00001000"
 757         help
 758           This sets the default offset of zero page.
 759
 760 config BOOT_LINK_OFFSET
 761         hex
 762         default "0x00210000" if SH_SHMIN
 763         default "0x00400000" if SH_CAYMAN
 764         default "0x00810000" if SH_7780_SOLUTION_ENGINE
 765         default "0x009e0000" if SH_TITAN
 766         default "0x01800000" if SH_SDK7780
 767         default "0x02000000" if SH_EDOSK7760
 768         default "0x00800000"
 769         help
 770           This option allows you to set the link address offset of the zImage.
 771           This can be useful if you are on a board which has a small amount of
 772           memory.
 773
 774 config ENTRY_OFFSET
 775         hex
 776         default "0x00001000" if PAGE_SIZE_4KB
 777         default "0x00002000" if PAGE_SIZE_8KB
 778         default "0x00004000" if PAGE_SIZE_16KB
 779         default "0x00010000" if PAGE_SIZE_64KB
 780         default "0x00000000"
 781
 782 config ROMIMAGE_MMCIF
 783         bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
 784         depends on CPU_SUBTYPE_SH7724
 785         help
 786           Say Y here to include experimental MMCIF loading code in
 787           romImage. With this enabled it is possible to write the romImage
 788           kernel image to an MMC card and boot the kernel straight from
 789           the reset vector. At reset the processor Mask ROM will load the
 790           first part of the romImage which in turn loads the rest the kernel
 791           image to RAM using the MMCIF hardware block.
 792
 793 choice
 794         prompt "Kernel command line"
 795         optional
 796         default CMDLINE_OVERWRITE
 797         help
 798           Setting this option allows the kernel command line arguments
 799           to be set.
 800
 801 config CMDLINE_OVERWRITE
 802         bool "Overwrite bootloader kernel arguments"
 803         help
 804           Given string will overwrite any arguments passed in by
 805           a bootloader.
 806
 807 config CMDLINE_EXTEND
 808         bool "Extend bootloader kernel arguments"
 809         help
 810           Given string will be concatenated with arguments passed in
 811           by a bootloader.
 812
 813 endchoice
 814
 815 config CMDLINE
 816         string "Kernel command line arguments string"
 817         depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
 818         default "console=ttySC1,115200"
 819
 820 endmenu
 821
 822 menu "Bus options"
 823
 824 config SUPERHYWAY
 825         tristate "SuperHyway Bus support"
 826         depends on CPU_SUBTYPE_SH4_202
 827
 828 config MAPLE
 829         bool "Maple Bus support"
 830         depends on SH_DREAMCAST
 831         help
 832          The Maple Bus is SEGA's serial communication bus for peripherals
 833          on the Dreamcast. Without this bus support you won't be able to
 834          get your Dreamcast keyboard etc to work, so most users
 835          probably want to say 'Y' here, unless you are only using the
 836          Dreamcast with a serial line terminal or a remote network
 837          connection.
 838
 839 config PCI
 840         bool "PCI support"
 841         depends on SYS_SUPPORTS_PCI
 842         select PCI_DOMAINS
 843         select GENERIC_PCI_IOMAP
 844         select NO_GENERIC_PCI_IOPORT_MAP
 845         help
 846           Find out whether you have a PCI motherboard. PCI is the name of a
 847           bus system, i.e. the way the CPU talks to the other stuff inside
 848           your box. If you have PCI, say Y, otherwise N.
 849
 850 config PCI_DOMAINS
 851         bool
 852
 853 source "drivers/pci/Kconfig"
 854
 855 source "drivers/pcmcia/Kconfig"
 856
 857 endmenu
 858
 859 menu "Executable file formats"
 860
 861 source "fs/Kconfig.binfmt"
 862
 863 endmenu
 864
 865 menu "Power management options (EXPERIMENTAL)"
 866
 867 source "kernel/power/Kconfig"
 868
 869 source "drivers/cpuidle/Kconfig"
 870
 871 endmenu
 872
 873 source "net/Kconfig"
 874
 875 source "drivers/Kconfig"
 876
 877 source "fs/Kconfig"
 878
 879 source "arch/sh/Kconfig.debug"
 880
 881 source "security/Kconfig"
 882
 883 source "crypto/Kconfig"
 884
 885 source "lib/Kconfig"