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_IRQ_WORK
  15         select HAVE_PERF_EVENTS
  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_KERNEL_GZIP
  20         select HAVE_KERNEL_BZIP2
  21         select HAVE_KERNEL_LZMA
  22         select HAVE_KERNEL_XZ
  23         select HAVE_KERNEL_LZO
  24         select HAVE_SYSCALL_TRACEPOINTS
  25         select HAVE_REGS_AND_STACK_ACCESS_API
  26         select HAVE_GENERIC_HARDIRQS
  27         select MAY_HAVE_SPARSE_IRQ
  28         select IRQ_FORCED_THREADING
  29         select RTC_LIB
  30         select GENERIC_ATOMIC64
  31         select GENERIC_IRQ_SHOW
  32         select GENERIC_SMP_IDLE_THREAD
  33         select GENERIC_CLOCKEVENTS
  34         select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
  35         select GENERIC_STRNCPY_FROM_USER
  36         select GENERIC_STRNLEN_USER
  37         help
  38           The SuperH is a RISC processor targeted for use in embedded systems
  39           and consumer electronics; it was also used in the Sega Dreamcast
  40           gaming console.  The SuperH port has a home page at
  41           <http://www.linux-sh.org/>.
  42
  43 config SUPERH32
  44         def_bool ARCH = "sh"
  45         select HAVE_KPROBES
  46         select HAVE_KRETPROBES
  47         select HAVE_IOREMAP_PROT if MMU && !X2TLB
  48         select HAVE_FUNCTION_TRACER
  49         select HAVE_FTRACE_MCOUNT_RECORD
  50         select HAVE_DYNAMIC_FTRACE
  51         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  52         select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
  53         select HAVE_FUNCTION_GRAPH_TRACER
  54         select HAVE_ARCH_KGDB
  55         select HAVE_HW_BREAKPOINT
  56         select HAVE_MIXED_BREAKPOINTS_REGS
  57         select PERF_EVENTS
  58         select ARCH_HIBERNATION_POSSIBLE if MMU
  59         select SPARSE_IRQ
  60
  61 config SUPERH64
  62         def_bool ARCH = "sh64"
  63
  64 config ARCH_DEFCONFIG
  65         string
  66         default "arch/sh/configs/shx3_defconfig" if SUPERH32
  67         default "arch/sh/configs/cayman_defconfig" if SUPERH64
  68
  69 config RWSEM_GENERIC_SPINLOCK
  70         def_bool y
  71
  72 config RWSEM_XCHGADD_ALGORITHM
  73         bool
  74
  75 config GENERIC_BUG
  76         def_bool y
  77         depends on BUG && SUPERH32
  78
  79 config GENERIC_CSUM
  80         def_bool y
  81         depends on SUPERH64
  82
  83 config GENERIC_HWEIGHT
  84         def_bool y
  85
  86 config IRQ_PER_CPU
  87         def_bool y
  88
  89 config GENERIC_GPIO
  90         def_bool n
  91
  92 config GENERIC_CALIBRATE_DELAY
  93         bool
  94
  95 config GENERIC_LOCKBREAK
  96         def_bool y
  97         depends on SMP && PREEMPT
  98
  99 config ARCH_SUSPEND_POSSIBLE
 100         def_bool n
 101
 102 config ARCH_HIBERNATION_POSSIBLE
 103         def_bool n
 104
 105 config SYS_SUPPORTS_APM_EMULATION
 106         bool
 107         select ARCH_SUSPEND_POSSIBLE
 108
 109 config SYS_SUPPORTS_HUGETLBFS
 110         bool
 111
 112 config SYS_SUPPORTS_SMP
 113         bool
 114
 115 config SYS_SUPPORTS_NUMA
 116         bool
 117
 118 config SYS_SUPPORTS_PCI
 119         bool
 120
 121 config SYS_SUPPORTS_CMT
 122         bool
 123
 124 config SYS_SUPPORTS_MTU2
 125         bool
 126
 127 config SYS_SUPPORTS_TMU
 128         bool
 129
 130 config STACKTRACE_SUPPORT
 131         def_bool y
 132
 133 config LOCKDEP_SUPPORT
 134         def_bool y
 135
 136 config HAVE_LATENCYTOP_SUPPORT
 137         def_bool y
 138
 139 config ARCH_HAS_ILOG2_U32
 140         def_bool n
 141
 142 config ARCH_HAS_ILOG2_U64
 143         def_bool n
 144
 145 config ARCH_NO_VIRT_TO_BUS
 146         def_bool y
 147
 148 config ARCH_HAS_DEFAULT_IDLE
 149         def_bool y
 150
 151 config NO_IOPORT
 152         def_bool !PCI
 153         depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
 154                    !SH_HP6XX && !SH_SOLUTION_ENGINE
 155
 156 config IO_TRAPPED
 157         bool
 158
 159 config SWAP_IO_SPACE
 160         bool
 161
 162 config DMA_COHERENT
 163         bool
 164
 165 config DMA_NONCOHERENT
 166         def_bool !DMA_COHERENT
 167
 168 config NEED_DMA_MAP_STATE
 169         def_bool DMA_NONCOHERENT
 170
 171 config NEED_SG_DMA_LENGTH
 172         def_bool y
 173
 174 source "init/Kconfig"
 175
 176 source "kernel/Kconfig.freezer"
 177
 178 menu "System type"
 179
 180 #
 181 # Processor families
 182 #
 183 config CPU_SH2
 184         bool
 185
 186 config CPU_SH2A
 187         bool
 188         select CPU_SH2
 189         select UNCACHED_MAPPING
 190
 191 config CPU_SH3
 192         bool
 193         select CPU_HAS_INTEVT
 194         select CPU_HAS_SR_RB
 195         select SYS_SUPPORTS_TMU
 196
 197 config CPU_SH4
 198         bool
 199         select CPU_HAS_INTEVT
 200         select CPU_HAS_SR_RB
 201         select CPU_HAS_FPU if !CPU_SH4AL_DSP
 202         select SYS_SUPPORTS_TMU
 203         select SYS_SUPPORTS_HUGETLBFS if MMU
 204
 205 config CPU_SH4A
 206         bool
 207         select CPU_SH4
 208
 209 config CPU_SH4AL_DSP
 210         bool
 211         select CPU_SH4A
 212         select CPU_HAS_DSP
 213
 214 config CPU_SH5
 215         bool
 216         select CPU_HAS_FPU
 217         select SYS_SUPPORTS_TMU
 218         select SYS_SUPPORTS_HUGETLBFS if MMU
 219
 220 config CPU_SHX2
 221         bool
 222
 223 config CPU_SHX3
 224         bool
 225         select DMA_COHERENT
 226         select SYS_SUPPORTS_SMP
 227         select SYS_SUPPORTS_NUMA
 228
 229 config ARCH_SHMOBILE
 230         bool
 231         select ARCH_SUSPEND_POSSIBLE
 232         select PM
 233         select PM_RUNTIME
 234
 235 config CPU_HAS_PMU
 236        depends on CPU_SH4 || CPU_SH4A
 237        default y
 238        bool
 239
 240 if SUPERH32
 241
 242 choice
 243         prompt "Processor sub-type selection"
 244
 245 #
 246 # Processor subtypes
 247 #
 248
 249 # SH-2 Processor Support
 250
 251 config CPU_SUBTYPE_SH7619
 252         bool "Support SH7619 processor"
 253         select CPU_SH2
 254         select SYS_SUPPORTS_CMT
 255
 256 # SH-2A Processor Support
 257
 258 config CPU_SUBTYPE_SH7201
 259         bool "Support SH7201 processor"
 260         select CPU_SH2A
 261         select CPU_HAS_FPU
 262         select SYS_SUPPORTS_MTU2
 263
 264 config CPU_SUBTYPE_SH7203
 265         bool "Support SH7203 processor"
 266         select CPU_SH2A
 267         select CPU_HAS_FPU
 268         select SYS_SUPPORTS_CMT
 269         select SYS_SUPPORTS_MTU2
 270         select ARCH_WANT_OPTIONAL_GPIOLIB
 271
 272 config CPU_SUBTYPE_SH7206
 273         bool "Support SH7206 processor"
 274         select CPU_SH2A
 275         select SYS_SUPPORTS_CMT
 276         select SYS_SUPPORTS_MTU2
 277
 278 config CPU_SUBTYPE_SH7263
 279         bool "Support SH7263 processor"
 280         select CPU_SH2A
 281         select CPU_HAS_FPU
 282         select SYS_SUPPORTS_CMT
 283         select SYS_SUPPORTS_MTU2
 284
 285 config CPU_SUBTYPE_SH7264
 286         bool "Support SH7264 processor"
 287         select CPU_SH2A
 288         select CPU_HAS_FPU
 289         select SYS_SUPPORTS_CMT
 290         select SYS_SUPPORTS_MTU2
 291
 292 config CPU_SUBTYPE_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
 299 config CPU_SUBTYPE_MXG
 300         bool "Support MX-G processor"
 301         select CPU_SH2A
 302         select SYS_SUPPORTS_MTU2
 303         help
 304           Select MX-G if running on an R8A03022BG part.
 305
 306 # SH-3 Processor Support
 307
 308 config CPU_SUBTYPE_SH7705
 309         bool "Support SH7705 processor"
 310         select CPU_SH3
 311
 312 config CPU_SUBTYPE_SH7706
 313         bool "Support SH7706 processor"
 314         select CPU_SH3
 315         help
 316           Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
 317
 318 config CPU_SUBTYPE_SH7707
 319         bool "Support SH7707 processor"
 320         select CPU_SH3
 321         help
 322           Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
 323
 324 config CPU_SUBTYPE_SH7708
 325         bool "Support SH7708 processor"
 326         select CPU_SH3
 327         help
 328           Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
 329           if you have a 100 Mhz SH-3 HD6417708R CPU.
 330
 331 config CPU_SUBTYPE_SH7709
 332         bool "Support SH7709 processor"
 333         select CPU_SH3
 334         help
 335           Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
 336
 337 config CPU_SUBTYPE_SH7710
 338         bool "Support SH7710 processor"
 339         select CPU_SH3
 340         select CPU_HAS_DSP
 341         help
 342           Select SH7710 if you have a SH3-DSP SH7710 CPU.
 343
 344 config CPU_SUBTYPE_SH7712
 345         bool "Support SH7712 processor"
 346         select CPU_SH3
 347         select CPU_HAS_DSP
 348         help
 349           Select SH7712 if you have a SH3-DSP SH7712 CPU.
 350
 351 config CPU_SUBTYPE_SH7720
 352         bool "Support SH7720 processor"
 353         select CPU_SH3
 354         select CPU_HAS_DSP
 355         select SYS_SUPPORTS_CMT
 356         select ARCH_WANT_OPTIONAL_GPIOLIB
 357         select USB_ARCH_HAS_OHCI
 358         select USB_OHCI_SH if USB_OHCI_HCD
 359         help
 360           Select SH7720 if you have a SH3-DSP SH7720 CPU.
 361
 362 config CPU_SUBTYPE_SH7721
 363         bool "Support SH7721 processor"
 364         select CPU_SH3
 365         select CPU_HAS_DSP
 366         select SYS_SUPPORTS_CMT
 367         select USB_ARCH_HAS_OHCI
 368         select USB_OHCI_SH if USB_OHCI_HCD
 369         help
 370           Select SH7721 if you have a SH3-DSP SH7721 CPU.
 371
 372 # SH-4 Processor Support
 373
 374 config CPU_SUBTYPE_SH7750
 375         bool "Support SH7750 processor"
 376         select CPU_SH4
 377         help
 378           Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
 379
 380 config CPU_SUBTYPE_SH7091
 381         bool "Support SH7091 processor"
 382         select CPU_SH4
 383         help
 384           Select SH7091 if you have an SH-4 based Sega device (such as
 385           the Dreamcast, Naomi, and Naomi 2).
 386
 387 config CPU_SUBTYPE_SH7750R
 388         bool "Support SH7750R processor"
 389         select CPU_SH4
 390
 391 config CPU_SUBTYPE_SH7750S
 392         bool "Support SH7750S processor"
 393         select CPU_SH4
 394
 395 config CPU_SUBTYPE_SH7751
 396         bool "Support SH7751 processor"
 397         select CPU_SH4
 398         help
 399           Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
 400           or if you have a HD6417751R CPU.
 401
 402 config CPU_SUBTYPE_SH7751R
 403         bool "Support SH7751R processor"
 404         select CPU_SH4
 405
 406 config CPU_SUBTYPE_SH7760
 407         bool "Support SH7760 processor"
 408         select CPU_SH4
 409
 410 config CPU_SUBTYPE_SH4_202
 411         bool "Support SH4-202 processor"
 412         select CPU_SH4
 413
 414 # SH-4A Processor Support
 415
 416 config CPU_SUBTYPE_SH7723
 417         bool "Support SH7723 processor"
 418         select CPU_SH4A
 419         select CPU_SHX2
 420         select ARCH_SHMOBILE
 421         select ARCH_SPARSEMEM_ENABLE
 422         select SYS_SUPPORTS_CMT
 423         select ARCH_WANT_OPTIONAL_GPIOLIB
 424         help
 425           Select SH7723 if you have an SH-MobileR2 CPU.
 426
 427 config CPU_SUBTYPE_SH7724
 428         bool "Support SH7724 processor"
 429         select CPU_SH4A
 430         select CPU_SHX2
 431         select ARCH_SHMOBILE
 432         select ARCH_SPARSEMEM_ENABLE
 433         select SYS_SUPPORTS_CMT
 434         select ARCH_WANT_OPTIONAL_GPIOLIB
 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 USB_ARCH_HAS_OHCI
 444         select USB_ARCH_HAS_EHCI
 445         help
 446           Select SH7734 if you have a SH4A SH7734 CPU.
 447
 448 config CPU_SUBTYPE_SH7757
 449         bool "Support SH7757 processor"
 450         select CPU_SH4A
 451         select CPU_SHX2
 452         select ARCH_WANT_OPTIONAL_GPIOLIB
 453         select USB_ARCH_HAS_OHCI
 454         select USB_ARCH_HAS_EHCI
 455         help
 456           Select SH7757 if you have a SH4A SH7757 CPU.
 457
 458 config CPU_SUBTYPE_SH7763
 459         bool "Support SH7763 processor"
 460         select CPU_SH4A
 461         select USB_ARCH_HAS_OHCI
 462         select USB_OHCI_SH if USB_OHCI_HCD
 463         help
 464           Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
 465
 466 config CPU_SUBTYPE_SH7770
 467         bool "Support SH7770 processor"
 468         select CPU_SH4A
 469
 470 config CPU_SUBTYPE_SH7780
 471         bool "Support SH7780 processor"
 472         select CPU_SH4A
 473
 474 config CPU_SUBTYPE_SH7785
 475         bool "Support SH7785 processor"
 476         select CPU_SH4A
 477         select CPU_SHX2
 478         select ARCH_SPARSEMEM_ENABLE
 479         select SYS_SUPPORTS_NUMA
 480         select ARCH_WANT_OPTIONAL_GPIOLIB
 481
 482 config CPU_SUBTYPE_SH7786
 483         bool "Support SH7786 processor"
 484         select CPU_SH4A
 485         select CPU_SHX3
 486         select CPU_HAS_PTEAEX
 487         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 488         select ARCH_WANT_OPTIONAL_GPIOLIB
 489         select USB_ARCH_HAS_OHCI
 490         select USB_OHCI_SH if USB_OHCI_HCD
 491         select USB_ARCH_HAS_EHCI
 492         select USB_EHCI_SH if USB_EHCI_HCD
 493
 494 config CPU_SUBTYPE_SHX3
 495         bool "Support SH-X3 processor"
 496         select CPU_SH4A
 497         select CPU_SHX3
 498         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 499         select ARCH_REQUIRE_GPIOLIB
 500
 501 # SH4AL-DSP Processor Support
 502
 503 config CPU_SUBTYPE_SH7343
 504         bool "Support SH7343 processor"
 505         select CPU_SH4AL_DSP
 506         select ARCH_SHMOBILE
 507         select SYS_SUPPORTS_CMT
 508
 509 config CPU_SUBTYPE_SH7722
 510         bool "Support SH7722 processor"
 511         select CPU_SH4AL_DSP
 512         select CPU_SHX2
 513         select ARCH_SHMOBILE
 514         select ARCH_SPARSEMEM_ENABLE
 515         select SYS_SUPPORTS_NUMA
 516         select SYS_SUPPORTS_CMT
 517         select ARCH_WANT_OPTIONAL_GPIOLIB
 518
 519 config CPU_SUBTYPE_SH7366
 520         bool "Support SH7366 processor"
 521         select CPU_SH4AL_DSP
 522         select CPU_SHX2
 523         select ARCH_SHMOBILE
 524         select ARCH_SPARSEMEM_ENABLE
 525         select SYS_SUPPORTS_NUMA
 526         select SYS_SUPPORTS_CMT
 527
 528 endchoice
 529
 530 endif
 531
 532 if SUPERH64
 533
 534 choice
 535         prompt "Processor sub-type selection"
 536
 537 # SH-5 Processor Support
 538
 539 config CPU_SUBTYPE_SH5_101
 540         bool "Support SH5-101 processor"
 541         select CPU_SH5
 542
 543 config CPU_SUBTYPE_SH5_103
 544         bool "Support SH5-103 processor"
 545         select CPU_SH5
 546
 547 endchoice
 548
 549 endif
 550
 551 source "arch/sh/mm/Kconfig"
 552
 553 source "arch/sh/Kconfig.cpu"
 554
 555 source "arch/sh/boards/Kconfig"
 556
 557 menu "Timer and clock configuration"
 558
 559 config SH_TIMER_TMU
 560         bool "TMU timer driver"
 561         depends on SYS_SUPPORTS_TMU
 562         default y
 563         help
 564           This enables the build of the TMU timer driver.
 565
 566 config SH_TIMER_CMT
 567         bool "CMT timer driver"
 568         depends on SYS_SUPPORTS_CMT
 569         default y
 570         help
 571           This enables build of the CMT timer driver.
 572
 573 config SH_TIMER_MTU2
 574         bool "MTU2 timer driver"
 575         depends on SYS_SUPPORTS_MTU2
 576         default y
 577         help
 578           This enables build of the MTU2 timer driver.
 579
 580 config SH_PCLK_FREQ
 581         int "Peripheral clock frequency (in Hz)"
 582         depends on SH_CLK_CPG_LEGACY
 583         default "31250000" if CPU_SUBTYPE_SH7619
 584         default "33333333" if CPU_SUBTYPE_SH7770 || \
 585                               CPU_SUBTYPE_SH7760 || \
 586                               CPU_SUBTYPE_SH7705 || \
 587                               CPU_SUBTYPE_SH7203 || \
 588                               CPU_SUBTYPE_SH7206 || \
 589                               CPU_SUBTYPE_SH7263 || \
 590                               CPU_SUBTYPE_MXG
 591         default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
 592         default "66000000" if CPU_SUBTYPE_SH4_202
 593         default "50000000"
 594         help
 595           This option is used to specify the peripheral clock frequency.
 596           This is necessary for determining the reference clock value on
 597           platforms lacking an RTC.
 598
 599 config SH_CLK_CPG
 600         def_bool y
 601
 602 config SH_CLK_CPG_LEGACY
 603         depends on SH_CLK_CPG
 604         def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
 605                       !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
 606                       !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
 607                       !CPU_SUBTYPE_SH7269
 608
 609 endmenu
 610
 611 menu "CPU Frequency scaling"
 612
 613 source "drivers/cpufreq/Kconfig"
 614
 615 config SH_CPU_FREQ
 616         tristate "SuperH CPU Frequency driver"
 617         depends on CPU_FREQ
 618         select CPU_FREQ_TABLE
 619         help
 620           This adds the cpufreq driver for SuperH. Any CPU that supports
 621           clock rate rounding through the clock framework can use this
 622           driver. While it will make the kernel slightly larger, this is
 623           harmless for CPUs that don't support rate rounding. The driver
 624           will also generate a notice in the boot log before disabling
 625           itself if the CPU in question is not capable of rate rounding.
 626
 627           For details, take a look at <file:Documentation/cpu-freq>.
 628
 629           If unsure, say N.
 630
 631 endmenu
 632
 633 source "arch/sh/drivers/Kconfig"
 634
 635 endmenu
 636
 637 menu "Kernel features"
 638
 639 source kernel/Kconfig.hz
 640
 641 config KEXEC
 642         bool "kexec system call (EXPERIMENTAL)"
 643         depends on SUPERH32 && EXPERIMENTAL && MMU
 644         help
 645           kexec is a system call that implements the ability to shutdown your
 646           current kernel, and to start another kernel.  It is like a reboot
 647           but it is independent of the system firmware.  And like a reboot
 648           you can start any kernel with it, not just Linux.
 649
 650           The name comes from the similarity to the exec system call.
 651
 652           It is an ongoing process to be certain the hardware in a machine
 653           is properly shutdown, so do not be surprised if this code does not
 654           initially work for you.  It may help to enable device hotplugging
 655           support.  As of this writing the exact hardware interface is
 656           strongly in flux, so no good recommendation can be made.
 657
 658 config CRASH_DUMP
 659         bool "kernel crash dumps (EXPERIMENTAL)"
 660         depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
 661         help
 662           Generate crash dump after being started by kexec.
 663           This should be normally only set in special crash dump kernels
 664           which are loaded in the main kernel with kexec-tools into
 665           a specially reserved region and then later executed after
 666           a crash by kdump/kexec. The crash dump kernel must be compiled
 667           to a memory address not used by the main kernel using
 668           PHYSICAL_START.
 669
 670           For more details see Documentation/kdump/kdump.txt
 671
 672 config KEXEC_JUMP
 673         bool "kexec jump (EXPERIMENTAL)"
 674         depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
 675         help
 676           Jump between original kernel and kexeced kernel and invoke
 677           code via KEXEC
 678
 679 config PHYSICAL_START
 680         hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
 681         default MEMORY_START
 682         ---help---
 683           This gives the physical address where the kernel is loaded
 684           and is ordinarily the same as MEMORY_START.
 685
 686           Different values are primarily used in the case of kexec on panic
 687           where the fail safe kernel needs to run at a different address
 688           than the panic-ed kernel.
 689
 690 config SECCOMP
 691         bool "Enable seccomp to safely compute untrusted bytecode"
 692         depends on PROC_FS
 693         help
 694           This kernel feature is useful for number crunching applications
 695           that may need to compute untrusted bytecode during their
 696           execution. By using pipes or other transports made available to
 697           the process as file descriptors supporting the read/write
 698           syscalls, it's possible to isolate those applications in
 699           their own address space using seccomp. Once seccomp is
 700           enabled via prctl, it cannot be disabled and the task is only
 701           allowed to execute a few safe syscalls defined by each seccomp
 702           mode.
 703
 704           If unsure, say N.
 705
 706 config CC_STACKPROTECTOR
 707         bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
 708         depends on SUPERH32 && EXPERIMENTAL
 709         help
 710           This option turns on the -fstack-protector GCC feature. This
 711           feature puts, at the beginning of functions, a canary value on
 712           the stack just before the return address, and validates
 713           the value just before actually returning.  Stack based buffer
 714           overflows (that need to overwrite this return address) now also
 715           overwrite the canary, which gets detected and the attack is then
 716           neutralized via a kernel panic.
 717
 718           This feature requires gcc version 4.2 or above.
 719
 720 config SMP
 721         bool "Symmetric multi-processing support"
 722         depends on SYS_SUPPORTS_SMP
 723         select USE_GENERIC_SMP_HELPERS
 724         ---help---
 725           This enables support for systems with more than one CPU. If you have
 726           a system with only one CPU, like most personal computers, say N. If
 727           you have a system with more than one CPU, say Y.
 728
 729           If you say N here, the kernel will run on single and multiprocessor
 730           machines, but will use only one CPU of a multiprocessor machine. If
 731           you say Y here, the kernel will run on many, but not all,
 732           singleprocessor machines. On a singleprocessor machine, the kernel
 733           will run faster if you say N here.
 734
 735           People using multiprocessor machines who say Y here should also say
 736           Y to "Enhanced Real Time Clock Support", below.
 737
 738           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 739           available at <http://www.tldp.org/docs.html#howto>.
 740
 741           If you don't know what to do here, say N.
 742
 743 config NR_CPUS
 744         int "Maximum number of CPUs (2-32)"
 745         range 2 32
 746         depends on SMP
 747         default "4" if CPU_SUBTYPE_SHX3
 748         default "2"
 749         help
 750           This allows you to specify the maximum number of CPUs which this
 751           kernel will support.  The maximum supported value is 32 and the
 752           minimum value which makes sense is 2.
 753
 754           This is purely to save memory - each supported CPU adds
 755           approximately eight kilobytes to the kernel image.
 756
 757 config HOTPLUG_CPU
 758         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 759         depends on SMP && HOTPLUG && EXPERIMENTAL
 760         help
 761           Say Y here to experiment with turning CPUs off and on.  CPUs
 762           can be controlled through /sys/devices/system/cpu.
 763
 764 source "kernel/Kconfig.preempt"
 765
 766 config GUSA
 767         def_bool y
 768         depends on !SMP && SUPERH32
 769         help
 770           This enables support for gUSA (general UserSpace Atomicity).
 771           This is the default implementation for both UP and non-ll/sc
 772           CPUs, and is used by the libc, amongst others.
 773
 774           For additional information, design information can be found
 775           in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
 776
 777           This should only be disabled for special cases where alternate
 778           atomicity implementations exist.
 779
 780 config GUSA_RB
 781         bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
 782         depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
 783         help
 784           Enabling this option will allow the kernel to implement some
 785           atomic operations using a software implementation of load-locked/
 786           store-conditional (LLSC). On machines which do not have hardware
 787           LLSC, this should be more efficient than the other alternative of
 788           disabling interrupts around the atomic sequence.
 789
 790 config HW_PERF_EVENTS
 791         bool "Enable hardware performance counter support for perf events"
 792         depends on PERF_EVENTS && CPU_HAS_PMU
 793         default y
 794         help
 795           Enable hardware performance counter support for perf events. If
 796           disabled, perf events will use software events only.
 797
 798 source "drivers/sh/Kconfig"
 799
 800 endmenu
 801
 802 menu "Boot options"
 803
 804 config ZERO_PAGE_OFFSET
 805         hex
 806         default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
 807                                 SH_7751_SOLUTION_ENGINE
 808         default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
 809         default "0x00002000" if PAGE_SIZE_8KB
 810         default "0x00001000"
 811         help
 812           This sets the default offset of zero page.
 813
 814 config BOOT_LINK_OFFSET
 815         hex
 816         default "0x00210000" if SH_SHMIN
 817         default "0x00400000" if SH_CAYMAN
 818         default "0x00810000" if SH_7780_SOLUTION_ENGINE
 819         default "0x009e0000" if SH_TITAN
 820         default "0x01800000" if SH_SDK7780
 821         default "0x02000000" if SH_EDOSK7760
 822         default "0x00800000"
 823         help
 824           This option allows you to set the link address offset of the zImage.
 825           This can be useful if you are on a board which has a small amount of
 826           memory.
 827
 828 config ENTRY_OFFSET
 829         hex
 830         default "0x00001000" if PAGE_SIZE_4KB
 831         default "0x00002000" if PAGE_SIZE_8KB
 832         default "0x00004000" if PAGE_SIZE_16KB
 833         default "0x00010000" if PAGE_SIZE_64KB
 834         default "0x00000000"
 835
 836 config ROMIMAGE_MMCIF
 837         bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
 838         depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
 839         help
 840           Say Y here to include experimental MMCIF loading code in
 841           romImage. With this enabled it is possible to write the romImage
 842           kernel image to an MMC card and boot the kernel straight from
 843           the reset vector. At reset the processor Mask ROM will load the
 844           first part of the romImage which in turn loads the rest the kernel
 845           image to RAM using the MMCIF hardware block.
 846
 847 choice
 848         prompt "Kernel command line"
 849         optional
 850         default CMDLINE_OVERWRITE
 851         help
 852           Setting this option allows the kernel command line arguments
 853           to be set.
 854
 855 config CMDLINE_OVERWRITE
 856         bool "Overwrite bootloader kernel arguments"
 857         help
 858           Given string will overwrite any arguments passed in by
 859           a bootloader.
 860
 861 config CMDLINE_EXTEND
 862         bool "Extend bootloader kernel arguments"
 863         help
 864           Given string will be concatenated with arguments passed in
 865           by a bootloader.
 866
 867 endchoice
 868
 869 config CMDLINE
 870         string "Kernel command line arguments string"
 871         depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
 872         default "console=ttySC1,115200"
 873
 874 endmenu
 875
 876 menu "Bus options"
 877
 878 config SUPERHYWAY
 879         tristate "SuperHyway Bus support"
 880         depends on CPU_SUBTYPE_SH4_202
 881
 882 config MAPLE
 883         bool "Maple Bus support"
 884         depends on SH_DREAMCAST
 885         help
 886          The Maple Bus is SEGA's serial communication bus for peripherals
 887          on the Dreamcast. Without this bus support you won't be able to
 888          get your Dreamcast keyboard etc to work, so most users
 889          probably want to say 'Y' here, unless you are only using the
 890          Dreamcast with a serial line terminal or a remote network
 891          connection.
 892
 893 config PCI
 894         bool "PCI support"
 895         depends on SYS_SUPPORTS_PCI
 896         select PCI_DOMAINS
 897         select GENERIC_PCI_IOMAP
 898         select NO_GENERIC_PCI_IOPORT_MAP
 899         help
 900           Find out whether you have a PCI motherboard. PCI is the name of a
 901           bus system, i.e. the way the CPU talks to the other stuff inside
 902           your box. If you have PCI, say Y, otherwise N.
 903
 904 config PCI_DOMAINS
 905         bool
 906
 907 source "drivers/pci/pcie/Kconfig"
 908
 909 source "drivers/pci/Kconfig"
 910
 911 source "drivers/pcmcia/Kconfig"
 912
 913 source "drivers/pci/hotplug/Kconfig"
 914
 915 endmenu
 916
 917 menu "Executable file formats"
 918
 919 source "fs/Kconfig.binfmt"
 920
 921 endmenu
 922
 923 menu "Power management options (EXPERIMENTAL)"
 924 depends on EXPERIMENTAL
 925
 926 source "kernel/power/Kconfig"
 927
 928 source "drivers/cpuidle/Kconfig"
 929
 930 endmenu
 931
 932 source "net/Kconfig"
 933
 934 source "drivers/Kconfig"
 935
 936 source "fs/Kconfig"
 937
 938 source "arch/sh/Kconfig.debug"
 939
 940 source "security/Kconfig"
 941
 942 source "crypto/Kconfig"
 943
 944 source "lib/Kconfig"