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_MEMBLOCK_NODE_MAP
   8         select ARCH_DISCARD_MEMBLOCK
   9         select HAVE_OPROFILE
  10         select HAVE_GENERIC_DMA_COHERENT
  11         select HAVE_ARCH_TRACEHOOK
  12         select HAVE_DMA_API_DEBUG
  13         select HAVE_DMA_ATTRS
  14         select HAVE_PERF_EVENTS
  15         select HAVE_DEBUG_BUGVERBOSE
  16         select ARCH_HAVE_CUSTOM_GPIO_H
  17         select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
  18         select PERF_USE_VMALLOC
  19         select HAVE_DEBUG_KMEMLEAK
  20         select HAVE_KERNEL_GZIP
  21         select HAVE_KERNEL_BZIP2
  22         select HAVE_KERNEL_LZMA
  23         select HAVE_KERNEL_XZ
  24         select HAVE_KERNEL_LZO
  25         select HAVE_UID16
  26         select ARCH_WANT_IPC_PARSE_VERSION
  27         select HAVE_SYSCALL_TRACEPOINTS
  28         select HAVE_REGS_AND_STACK_ACCESS_API
  29         select HAVE_GENERIC_HARDIRQS
  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         help
  46           The SuperH is a RISC processor targeted for use in embedded systems
  47           and consumer electronics; it was also used in the Sega Dreamcast
  48           gaming console.  The SuperH port has a home page at
  49           <http://www.linux-sh.org/>.
  50
  51 config SUPERH32
  52         def_bool ARCH = "sh"
  53         select HAVE_KPROBES
  54         select HAVE_KRETPROBES
  55         select HAVE_IOREMAP_PROT if MMU && !X2TLB
  56         select HAVE_FUNCTION_TRACER
  57         select HAVE_FTRACE_MCOUNT_RECORD
  58         select HAVE_DYNAMIC_FTRACE
  59         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  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
  70 config SUPERH64
  71         def_bool ARCH = "sh64"
  72         select KALLSYMS
  73
  74 config ARCH_DEFCONFIG
  75         string
  76         default "arch/sh/configs/shx3_defconfig" if SUPERH32
  77         default "arch/sh/configs/cayman_defconfig" if SUPERH64
  78
  79 config RWSEM_GENERIC_SPINLOCK
  80         def_bool y
  81
  82 config RWSEM_XCHGADD_ALGORITHM
  83         bool
  84
  85 config GENERIC_BUG
  86         def_bool y
  87         depends on BUG && SUPERH32
  88
  89 config GENERIC_CSUM
  90         def_bool y
  91         depends on SUPERH64
  92
  93 config GENERIC_HWEIGHT
  94         def_bool y
  95
  96 config GENERIC_CALIBRATE_DELAY
  97         bool
  98
  99 config GENERIC_LOCKBREAK
 100         def_bool y
 101         depends on SMP && PREEMPT
 102
 103 config ARCH_SUSPEND_POSSIBLE
 104         def_bool n
 105
 106 config ARCH_HIBERNATION_POSSIBLE
 107         def_bool n
 108
 109 config SYS_SUPPORTS_APM_EMULATION
 110         bool
 111         select ARCH_SUSPEND_POSSIBLE
 112
 113 config SYS_SUPPORTS_HUGETLBFS
 114         bool
 115
 116 config SYS_SUPPORTS_SMP
 117         bool
 118
 119 config SYS_SUPPORTS_NUMA
 120         bool
 121
 122 config SYS_SUPPORTS_PCI
 123         bool
 124
 125 config SYS_SUPPORTS_CMT
 126         bool
 127
 128 config SYS_SUPPORTS_MTU2
 129         bool
 130
 131 config SYS_SUPPORTS_TMU
 132         bool
 133
 134 config STACKTRACE_SUPPORT
 135         def_bool y
 136
 137 config LOCKDEP_SUPPORT
 138         def_bool y
 139
 140 config HAVE_LATENCYTOP_SUPPORT
 141         def_bool y
 142
 143 config ARCH_HAS_ILOG2_U32
 144         def_bool n
 145
 146 config ARCH_HAS_ILOG2_U64
 147         def_bool n
 148
 149 config NO_IOPORT
 150         def_bool !PCI
 151         depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
 152                    !SH_HP6XX && !SH_SOLUTION_ENGINE
 153
 154 config IO_TRAPPED
 155         bool
 156
 157 config SWAP_IO_SPACE
 158         bool
 159
 160 config DMA_COHERENT
 161         bool
 162
 163 config DMA_NONCOHERENT
 164         def_bool !DMA_COHERENT
 165
 166 config NEED_DMA_MAP_STATE
 167         def_bool DMA_NONCOHERENT
 168
 169 config NEED_SG_DMA_LENGTH
 170         def_bool y
 171
 172 source "init/Kconfig"
 173
 174 source "kernel/Kconfig.freezer"
 175
 176 menu "System type"
 177
 178 #
 179 # Processor families
 180 #
 181 config CPU_SH2
 182         bool
 183
 184 config CPU_SH2A
 185         bool
 186         select CPU_SH2
 187         select UNCACHED_MAPPING
 188
 189 config CPU_SH3
 190         bool
 191         select CPU_HAS_INTEVT
 192         select CPU_HAS_SR_RB
 193         select SYS_SUPPORTS_TMU
 194
 195 config CPU_SH4
 196         bool
 197         select CPU_HAS_INTEVT
 198         select CPU_HAS_SR_RB
 199         select CPU_HAS_FPU if !CPU_SH4AL_DSP
 200         select SYS_SUPPORTS_TMU
 201         select SYS_SUPPORTS_HUGETLBFS if MMU
 202
 203 config CPU_SH4A
 204         bool
 205         select CPU_SH4
 206
 207 config CPU_SH4AL_DSP
 208         bool
 209         select CPU_SH4A
 210         select CPU_HAS_DSP
 211
 212 config CPU_SH5
 213         bool
 214         select CPU_HAS_FPU
 215         select SYS_SUPPORTS_TMU
 216         select SYS_SUPPORTS_HUGETLBFS if MMU
 217
 218 config CPU_SHX2
 219         bool
 220
 221 config CPU_SHX3
 222         bool
 223         select DMA_COHERENT
 224         select SYS_SUPPORTS_SMP
 225         select SYS_SUPPORTS_NUMA
 226
 227 config ARCH_SHMOBILE
 228         bool
 229         select ARCH_SUSPEND_POSSIBLE
 230         select PM
 231         select PM_RUNTIME
 232
 233 config CPU_HAS_PMU
 234        depends on CPU_SH4 || CPU_SH4A
 235        default y
 236        bool
 237
 238 if SUPERH32
 239
 240 choice
 241         prompt "Processor sub-type selection"
 242
 243 #
 244 # Processor subtypes
 245 #
 246
 247 # SH-2 Processor Support
 248
 249 config CPU_SUBTYPE_SH7619
 250         bool "Support SH7619 processor"
 251         select CPU_SH2
 252         select SYS_SUPPORTS_CMT
 253
 254 # SH-2A Processor Support
 255
 256 config CPU_SUBTYPE_SH7201
 257         bool "Support SH7201 processor"
 258         select CPU_SH2A
 259         select CPU_HAS_FPU
 260         select SYS_SUPPORTS_MTU2
 261
 262 config CPU_SUBTYPE_SH7203
 263         bool "Support SH7203 processor"
 264         select CPU_SH2A
 265         select CPU_HAS_FPU
 266         select SYS_SUPPORTS_CMT
 267         select SYS_SUPPORTS_MTU2
 268         select ARCH_WANT_OPTIONAL_GPIOLIB
 269         select PINCTRL
 270
 271 config CPU_SUBTYPE_SH7206
 272         bool "Support SH7206 processor"
 273         select CPU_SH2A
 274         select SYS_SUPPORTS_CMT
 275         select SYS_SUPPORTS_MTU2
 276
 277 config CPU_SUBTYPE_SH7263
 278         bool "Support SH7263 processor"
 279         select CPU_SH2A
 280         select CPU_HAS_FPU
 281         select SYS_SUPPORTS_CMT
 282         select SYS_SUPPORTS_MTU2
 283
 284 config CPU_SUBTYPE_SH7264
 285         bool "Support SH7264 processor"
 286         select CPU_SH2A
 287         select CPU_HAS_FPU
 288         select SYS_SUPPORTS_CMT
 289         select SYS_SUPPORTS_MTU2
 290         select PINCTRL
 291
 292 config CPU_SUBTYPE_SH7269
 293         bool "Support SH7269 processor"
 294         select CPU_SH2A
 295         select CPU_HAS_FPU
 296         select SYS_SUPPORTS_CMT
 297         select SYS_SUPPORTS_MTU2
 298         select PINCTRL
 299
 300 config CPU_SUBTYPE_MXG
 301         bool "Support MX-G processor"
 302         select CPU_SH2A
 303         select SYS_SUPPORTS_MTU2
 304         help
 305           Select MX-G if running on an R8A03022BG part.
 306
 307 # SH-3 Processor Support
 308
 309 config CPU_SUBTYPE_SH7705
 310         bool "Support SH7705 processor"
 311         select CPU_SH3
 312
 313 config CPU_SUBTYPE_SH7706
 314         bool "Support SH7706 processor"
 315         select CPU_SH3
 316         help
 317           Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
 318
 319 config CPU_SUBTYPE_SH7707
 320         bool "Support SH7707 processor"
 321         select CPU_SH3
 322         help
 323           Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
 324
 325 config CPU_SUBTYPE_SH7708
 326         bool "Support SH7708 processor"
 327         select CPU_SH3
 328         help
 329           Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
 330           if you have a 100 Mhz SH-3 HD6417708R CPU.
 331
 332 config CPU_SUBTYPE_SH7709
 333         bool "Support SH7709 processor"
 334         select CPU_SH3
 335         help
 336           Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
 337
 338 config CPU_SUBTYPE_SH7710
 339         bool "Support SH7710 processor"
 340         select CPU_SH3
 341         select CPU_HAS_DSP
 342         help
 343           Select SH7710 if you have a SH3-DSP SH7710 CPU.
 344
 345 config CPU_SUBTYPE_SH7712
 346         bool "Support SH7712 processor"
 347         select CPU_SH3
 348         select CPU_HAS_DSP
 349         help
 350           Select SH7712 if you have a SH3-DSP SH7712 CPU.
 351
 352 config CPU_SUBTYPE_SH7720
 353         bool "Support SH7720 processor"
 354         select CPU_SH3
 355         select CPU_HAS_DSP
 356         select SYS_SUPPORTS_CMT
 357         select ARCH_WANT_OPTIONAL_GPIOLIB
 358         select USB_ARCH_HAS_OHCI
 359         select USB_OHCI_SH if USB_OHCI_HCD
 360         select PINCTRL
 361         help
 362           Select SH7720 if you have a SH3-DSP SH7720 CPU.
 363
 364 config CPU_SUBTYPE_SH7721
 365         bool "Support SH7721 processor"
 366         select CPU_SH3
 367         select CPU_HAS_DSP
 368         select SYS_SUPPORTS_CMT
 369         select USB_ARCH_HAS_OHCI
 370         select USB_OHCI_SH if USB_OHCI_HCD
 371         help
 372           Select SH7721 if you have a SH3-DSP SH7721 CPU.
 373
 374 # SH-4 Processor Support
 375
 376 config CPU_SUBTYPE_SH7750
 377         bool "Support SH7750 processor"
 378         select CPU_SH4
 379         help
 380           Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
 381
 382 config CPU_SUBTYPE_SH7091
 383         bool "Support SH7091 processor"
 384         select CPU_SH4
 385         help
 386           Select SH7091 if you have an SH-4 based Sega device (such as
 387           the Dreamcast, Naomi, and Naomi 2).
 388
 389 config CPU_SUBTYPE_SH7750R
 390         bool "Support SH7750R processor"
 391         select CPU_SH4
 392
 393 config CPU_SUBTYPE_SH7750S
 394         bool "Support SH7750S processor"
 395         select CPU_SH4
 396
 397 config CPU_SUBTYPE_SH7751
 398         bool "Support SH7751 processor"
 399         select CPU_SH4
 400         help
 401           Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
 402           or if you have a HD6417751R CPU.
 403
 404 config CPU_SUBTYPE_SH7751R
 405         bool "Support SH7751R processor"
 406         select CPU_SH4
 407
 408 config CPU_SUBTYPE_SH7760
 409         bool "Support SH7760 processor"
 410         select CPU_SH4
 411
 412 config CPU_SUBTYPE_SH4_202
 413         bool "Support SH4-202 processor"
 414         select CPU_SH4
 415
 416 # SH-4A Processor Support
 417
 418 config CPU_SUBTYPE_SH7723
 419         bool "Support SH7723 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         select PINCTRL
 427         help
 428           Select SH7723 if you have an SH-MobileR2 CPU.
 429
 430 config CPU_SUBTYPE_SH7724
 431         bool "Support SH7724 processor"
 432         select CPU_SH4A
 433         select CPU_SHX2
 434         select ARCH_SHMOBILE
 435         select ARCH_SPARSEMEM_ENABLE
 436         select SYS_SUPPORTS_CMT
 437         select ARCH_WANT_OPTIONAL_GPIOLIB
 438         select PINCTRL
 439         help
 440           Select SH7724 if you have an SH-MobileR2R CPU.
 441
 442 config CPU_SUBTYPE_SH7734
 443         bool "Support SH7734 processor"
 444         select CPU_SH4A
 445         select CPU_SHX2
 446         select ARCH_WANT_OPTIONAL_GPIOLIB
 447         select USB_ARCH_HAS_OHCI
 448         select USB_ARCH_HAS_EHCI
 449         select PINCTRL
 450         help
 451           Select SH7734 if you have a SH4A SH7734 CPU.
 452
 453 config CPU_SUBTYPE_SH7757
 454         bool "Support SH7757 processor"
 455         select CPU_SH4A
 456         select CPU_SHX2
 457         select ARCH_WANT_OPTIONAL_GPIOLIB
 458         select USB_ARCH_HAS_OHCI
 459         select USB_ARCH_HAS_EHCI
 460         select PINCTRL
 461         help
 462           Select SH7757 if you have a SH4A SH7757 CPU.
 463
 464 config CPU_SUBTYPE_SH7763
 465         bool "Support SH7763 processor"
 466         select CPU_SH4A
 467         select USB_ARCH_HAS_OHCI
 468         select USB_OHCI_SH if USB_OHCI_HCD
 469         help
 470           Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
 471
 472 config CPU_SUBTYPE_SH7770
 473         bool "Support SH7770 processor"
 474         select CPU_SH4A
 475
 476 config CPU_SUBTYPE_SH7780
 477         bool "Support SH7780 processor"
 478         select CPU_SH4A
 479
 480 config CPU_SUBTYPE_SH7785
 481         bool "Support SH7785 processor"
 482         select CPU_SH4A
 483         select CPU_SHX2
 484         select ARCH_SPARSEMEM_ENABLE
 485         select SYS_SUPPORTS_NUMA
 486         select ARCH_WANT_OPTIONAL_GPIOLIB
 487         select PINCTRL
 488
 489 config CPU_SUBTYPE_SH7786
 490         bool "Support SH7786 processor"
 491         select CPU_SH4A
 492         select CPU_SHX3
 493         select CPU_HAS_PTEAEX
 494         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 495         select ARCH_WANT_OPTIONAL_GPIOLIB
 496         select USB_ARCH_HAS_OHCI
 497         select USB_OHCI_SH if USB_OHCI_HCD
 498         select USB_ARCH_HAS_EHCI
 499         select USB_EHCI_SH if USB_EHCI_HCD
 500         select PINCTRL
 501
 502 config CPU_SUBTYPE_SHX3
 503         bool "Support SH-X3 processor"
 504         select CPU_SH4A
 505         select CPU_SHX3
 506         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 507         select ARCH_REQUIRE_GPIOLIB
 508         select PINCTRL
 509
 510 # SH4AL-DSP Processor Support
 511
 512 config CPU_SUBTYPE_SH7343
 513         bool "Support SH7343 processor"
 514         select CPU_SH4AL_DSP
 515         select ARCH_SHMOBILE
 516         select SYS_SUPPORTS_CMT
 517
 518 config CPU_SUBTYPE_SH7722
 519         bool "Support SH7722 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_CMT
 526         select ARCH_WANT_OPTIONAL_GPIOLIB
 527         select PINCTRL
 528
 529 config CPU_SUBTYPE_SH7366
 530         bool "Support SH7366 processor"
 531         select CPU_SH4AL_DSP
 532         select CPU_SHX2
 533         select ARCH_SHMOBILE
 534         select ARCH_SPARSEMEM_ENABLE
 535         select SYS_SUPPORTS_NUMA
 536         select SYS_SUPPORTS_CMT
 537
 538 endchoice
 539
 540 endif
 541
 542 if SUPERH64
 543
 544 choice
 545         prompt "Processor sub-type selection"
 546
 547 # SH-5 Processor Support
 548
 549 config CPU_SUBTYPE_SH5_101
 550         bool "Support SH5-101 processor"
 551         select CPU_SH5
 552
 553 config CPU_SUBTYPE_SH5_103
 554         bool "Support SH5-103 processor"
 555         select CPU_SH5
 556
 557 endchoice
 558
 559 endif
 560
 561 source "arch/sh/mm/Kconfig"
 562
 563 source "arch/sh/Kconfig.cpu"
 564
 565 source "arch/sh/boards/Kconfig"
 566
 567 menu "Timer and clock configuration"
 568
 569 config SH_TIMER_TMU
 570         bool "TMU timer driver"
 571         depends on SYS_SUPPORTS_TMU
 572         default y
 573         help
 574           This enables the build of the TMU timer driver.
 575
 576 config SH_TIMER_CMT
 577         bool "CMT timer driver"
 578         depends on SYS_SUPPORTS_CMT
 579         default y
 580         help
 581           This enables build of the CMT timer driver.
 582
 583 config SH_TIMER_MTU2
 584         bool "MTU2 timer driver"
 585         depends on SYS_SUPPORTS_MTU2
 586         default y
 587         help
 588           This enables build of the MTU2 timer driver.
 589
 590 config SH_PCLK_FREQ
 591         int "Peripheral clock frequency (in Hz)"
 592         depends on SH_CLK_CPG_LEGACY
 593         default "31250000" if CPU_SUBTYPE_SH7619
 594         default "33333333" if CPU_SUBTYPE_SH7770 || \
 595                               CPU_SUBTYPE_SH7760 || \
 596                               CPU_SUBTYPE_SH7705 || \
 597                               CPU_SUBTYPE_SH7203 || \
 598                               CPU_SUBTYPE_SH7206 || \
 599                               CPU_SUBTYPE_SH7263 || \
 600                               CPU_SUBTYPE_MXG
 601         default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
 602         default "66000000" if CPU_SUBTYPE_SH4_202
 603         default "50000000"
 604         help
 605           This option is used to specify the peripheral clock frequency.
 606           This is necessary for determining the reference clock value on
 607           platforms lacking an RTC.
 608
 609 config SH_CLK_CPG
 610         def_bool y
 611
 612 config SH_CLK_CPG_LEGACY
 613         depends on SH_CLK_CPG
 614         def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
 615                       !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
 616                       !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
 617                       !CPU_SUBTYPE_SH7269
 618
 619 endmenu
 620
 621 menu "CPU Frequency scaling"
 622 source "drivers/cpufreq/Kconfig"
 623 endmenu
 624
 625 source "arch/sh/drivers/Kconfig"
 626
 627 endmenu
 628
 629 menu "Kernel features"
 630
 631 source kernel/Kconfig.hz
 632
 633 config KEXEC
 634         bool "kexec system call (EXPERIMENTAL)"
 635         depends on SUPERH32 && MMU
 636         help
 637           kexec is a system call that implements the ability to shutdown your
 638           current kernel, and to start another kernel.  It is like a reboot
 639           but it is independent of the system firmware.  And like a reboot
 640           you can start any kernel with it, not just Linux.
 641
 642           The name comes from the similarity to the exec system call.
 643
 644           It is an ongoing process to be certain the hardware in a machine
 645           is properly shutdown, so do not be surprised if this code does not
 646           initially work for you.  It may help to enable device hotplugging
 647           support.  As of this writing the exact hardware interface is
 648           strongly in flux, so no good recommendation can be made.
 649
 650 config CRASH_DUMP
 651         bool "kernel crash dumps (EXPERIMENTAL)"
 652         depends on SUPERH32 && BROKEN_ON_SMP
 653         help
 654           Generate crash dump after being started by kexec.
 655           This should be normally only set in special crash dump kernels
 656           which are loaded in the main kernel with kexec-tools into
 657           a specially reserved region and then later executed after
 658           a crash by kdump/kexec. The crash dump kernel must be compiled
 659           to a memory address not used by the main kernel using
 660           PHYSICAL_START.
 661
 662           For more details see Documentation/kdump/kdump.txt
 663
 664 config KEXEC_JUMP
 665         bool "kexec jump (EXPERIMENTAL)"
 666         depends on SUPERH32 && KEXEC && HIBERNATION
 667         help
 668           Jump between original kernel and kexeced kernel and invoke
 669           code via KEXEC
 670
 671 config PHYSICAL_START
 672         hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
 673         default MEMORY_START
 674         ---help---
 675           This gives the physical address where the kernel is loaded
 676           and is ordinarily the same as MEMORY_START.
 677
 678           Different values are primarily used in the case of kexec on panic
 679           where the fail safe kernel needs to run at a different address
 680           than the panic-ed kernel.
 681
 682 config SECCOMP
 683         bool "Enable seccomp to safely compute untrusted bytecode"
 684         depends on PROC_FS
 685         help
 686           This kernel feature is useful for number crunching applications
 687           that may need to compute untrusted bytecode during their
 688           execution. By using pipes or other transports made available to
 689           the process as file descriptors supporting the read/write
 690           syscalls, it's possible to isolate those applications in
 691           their own address space using seccomp. Once seccomp is
 692           enabled via prctl, it cannot be disabled and the task is only
 693           allowed to execute a few safe syscalls defined by each seccomp
 694           mode.
 695
 696           If unsure, say N.
 697
 698 config CC_STACKPROTECTOR
 699         bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
 700         depends on SUPERH32
 701         help
 702           This option turns on the -fstack-protector GCC feature. This
 703           feature puts, at the beginning of functions, a canary value on
 704           the stack just before the return address, and validates
 705           the value just before actually returning.  Stack based buffer
 706           overflows (that need to overwrite this return address) now also
 707           overwrite the canary, which gets detected and the attack is then
 708           neutralized via a kernel panic.
 709
 710           This feature requires gcc version 4.2 or above.
 711
 712 config SMP
 713         bool "Symmetric multi-processing support"
 714         depends on SYS_SUPPORTS_SMP
 715         select USE_GENERIC_SMP_HELPERS
 716         ---help---
 717           This enables support for systems with more than one CPU. If you have
 718           a system with only one CPU, like most personal computers, say N. If
 719           you have a system with more than one CPU, say Y.
 720
 721           If you say N here, the kernel will run on single and multiprocessor
 722           machines, but will use only one CPU of a multiprocessor machine. If
 723           you say Y here, the kernel will run on many, but not all,
 724           singleprocessor machines. On a singleprocessor machine, the kernel
 725           will run faster if you say N here.
 726
 727           People using multiprocessor machines who say Y here should also say
 728           Y to "Enhanced Real Time Clock Support", below.
 729
 730           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 731           available at <http://www.tldp.org/docs.html#howto>.
 732
 733           If you don't know what to do here, say N.
 734
 735 config NR_CPUS
 736         int "Maximum number of CPUs (2-32)"
 737         range 2 32
 738         depends on SMP
 739         default "4" if CPU_SUBTYPE_SHX3
 740         default "2"
 741         help
 742           This allows you to specify the maximum number of CPUs which this
 743           kernel will support.  The maximum supported value is 32 and the
 744           minimum value which makes sense is 2.
 745
 746           This is purely to save memory - each supported CPU adds
 747           approximately eight kilobytes to the kernel image.
 748
 749 config HOTPLUG_CPU
 750         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 751         depends on SMP && HOTPLUG
 752         help
 753           Say Y here to experiment with turning CPUs off and on.  CPUs
 754           can be controlled through /sys/devices/system/cpu.
 755
 756 source "kernel/Kconfig.preempt"
 757
 758 config GUSA
 759         def_bool y
 760         depends on !SMP && SUPERH32
 761         help
 762           This enables support for gUSA (general UserSpace Atomicity).
 763           This is the default implementation for both UP and non-ll/sc
 764           CPUs, and is used by the libc, amongst others.
 765
 766           For additional information, design information can be found
 767           in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
 768
 769           This should only be disabled for special cases where alternate
 770           atomicity implementations exist.
 771
 772 config GUSA_RB
 773         bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
 774         depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
 775         help
 776           Enabling this option will allow the kernel to implement some
 777           atomic operations using a software implementation of load-locked/
 778           store-conditional (LLSC). On machines which do not have hardware
 779           LLSC, this should be more efficient than the other alternative of
 780           disabling interrupts around the atomic sequence.
 781
 782 config HW_PERF_EVENTS
 783         bool "Enable hardware performance counter support for perf events"
 784         depends on PERF_EVENTS && CPU_HAS_PMU
 785         default y
 786         help
 787           Enable hardware performance counter support for perf events. If
 788           disabled, perf events will use software events only.
 789
 790 source "drivers/sh/Kconfig"
 791
 792 endmenu
 793
 794 menu "Boot options"
 795
 796 config ZERO_PAGE_OFFSET
 797         hex
 798         default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
 799                                 SH_7751_SOLUTION_ENGINE
 800         default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
 801         default "0x00002000" if PAGE_SIZE_8KB
 802         default "0x00001000"
 803         help
 804           This sets the default offset of zero page.
 805
 806 config BOOT_LINK_OFFSET
 807         hex
 808         default "0x00210000" if SH_SHMIN
 809         default "0x00400000" if SH_CAYMAN
 810         default "0x00810000" if SH_7780_SOLUTION_ENGINE
 811         default "0x009e0000" if SH_TITAN
 812         default "0x01800000" if SH_SDK7780
 813         default "0x02000000" if SH_EDOSK7760
 814         default "0x00800000"
 815         help
 816           This option allows you to set the link address offset of the zImage.
 817           This can be useful if you are on a board which has a small amount of
 818           memory.
 819
 820 config ENTRY_OFFSET
 821         hex
 822         default "0x00001000" if PAGE_SIZE_4KB
 823         default "0x00002000" if PAGE_SIZE_8KB
 824         default "0x00004000" if PAGE_SIZE_16KB
 825         default "0x00010000" if PAGE_SIZE_64KB
 826         default "0x00000000"
 827
 828 config ROMIMAGE_MMCIF
 829         bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
 830         depends on CPU_SUBTYPE_SH7724
 831         help
 832           Say Y here to include experimental MMCIF loading code in
 833           romImage. With this enabled it is possible to write the romImage
 834           kernel image to an MMC card and boot the kernel straight from
 835           the reset vector. At reset the processor Mask ROM will load the
 836           first part of the romImage which in turn loads the rest the kernel
 837           image to RAM using the MMCIF hardware block.
 838
 839 choice
 840         prompt "Kernel command line"
 841         optional
 842         default CMDLINE_OVERWRITE
 843         help
 844           Setting this option allows the kernel command line arguments
 845           to be set.
 846
 847 config CMDLINE_OVERWRITE
 848         bool "Overwrite bootloader kernel arguments"
 849         help
 850           Given string will overwrite any arguments passed in by
 851           a bootloader.
 852
 853 config CMDLINE_EXTEND
 854         bool "Extend bootloader kernel arguments"
 855         help
 856           Given string will be concatenated with arguments passed in
 857           by a bootloader.
 858
 859 endchoice
 860
 861 config CMDLINE
 862         string "Kernel command line arguments string"
 863         depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
 864         default "console=ttySC1,115200"
 865
 866 endmenu
 867
 868 menu "Bus options"
 869
 870 config SUPERHYWAY
 871         tristate "SuperHyway Bus support"
 872         depends on CPU_SUBTYPE_SH4_202
 873
 874 config MAPLE
 875         bool "Maple Bus support"
 876         depends on SH_DREAMCAST
 877         help
 878          The Maple Bus is SEGA's serial communication bus for peripherals
 879          on the Dreamcast. Without this bus support you won't be able to
 880          get your Dreamcast keyboard etc to work, so most users
 881          probably want to say 'Y' here, unless you are only using the
 882          Dreamcast with a serial line terminal or a remote network
 883          connection.
 884
 885 config PCI
 886         bool "PCI support"
 887         depends on SYS_SUPPORTS_PCI
 888         select PCI_DOMAINS
 889         select GENERIC_PCI_IOMAP
 890         select NO_GENERIC_PCI_IOPORT_MAP
 891         help
 892           Find out whether you have a PCI motherboard. PCI is the name of a
 893           bus system, i.e. the way the CPU talks to the other stuff inside
 894           your box. If you have PCI, say Y, otherwise N.
 895
 896 config PCI_DOMAINS
 897         bool
 898
 899 source "drivers/pci/pcie/Kconfig"
 900
 901 source "drivers/pci/Kconfig"
 902
 903 source "drivers/pcmcia/Kconfig"
 904
 905 source "drivers/pci/hotplug/Kconfig"
 906
 907 endmenu
 908
 909 menu "Executable file formats"
 910
 911 source "fs/Kconfig.binfmt"
 912
 913 endmenu
 914
 915 menu "Power management options (EXPERIMENTAL)"
 916
 917 source "kernel/power/Kconfig"
 918
 919 source "drivers/cpuidle/Kconfig"
 920
 921 endmenu
 922
 923 source "net/Kconfig"
 924
 925 source "drivers/Kconfig"
 926
 927 source "fs/Kconfig"
 928
 929 source "arch/sh/Kconfig.debug"
 930
 931 source "security/Kconfig"
 932
 933 source "crypto/Kconfig"
 934
 935 source "lib/Kconfig"