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 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 HAVE_GENERIC_HARDIRQS
  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_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         help
  44           The SuperH is a RISC processor targeted for use in embedded systems
  45           and consumer electronics; it was also used in the Sega Dreamcast
  46           gaming console.  The SuperH port has a home page at
  47           <http://www.linux-sh.org/>.
  48
  49 config SUPERH32
  50         def_bool ARCH = "sh"
  51         select HAVE_KPROBES
  52         select HAVE_KRETPROBES
  53         select HAVE_IOREMAP_PROT if MMU && !X2TLB
  54         select HAVE_FUNCTION_TRACER
  55         select HAVE_FTRACE_MCOUNT_RECORD
  56         select HAVE_DYNAMIC_FTRACE
  57         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  58         select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
  59         select ARCH_WANT_IPC_PARSE_VERSION
  60         select HAVE_FUNCTION_GRAPH_TRACER
  61         select HAVE_ARCH_KGDB
  62         select HAVE_HW_BREAKPOINT
  63         select HAVE_MIXED_BREAKPOINTS_REGS
  64         select PERF_EVENTS
  65         select ARCH_HIBERNATION_POSSIBLE if MMU
  66         select SPARSE_IRQ
  67
  68 config SUPERH64
  69         def_bool ARCH = "sh64"
  70         select KALLSYMS
  71
  72 config ARCH_DEFCONFIG
  73         string
  74         default "arch/sh/configs/shx3_defconfig" if SUPERH32
  75         default "arch/sh/configs/cayman_defconfig" if SUPERH64
  76
  77 config RWSEM_GENERIC_SPINLOCK
  78         def_bool y
  79
  80 config RWSEM_XCHGADD_ALGORITHM
  81         bool
  82
  83 config GENERIC_BUG
  84         def_bool y
  85         depends on BUG && SUPERH32
  86
  87 config GENERIC_CSUM
  88         def_bool y
  89         depends on SUPERH64
  90
  91 config GENERIC_HWEIGHT
  92         def_bool y
  93
  94 config IRQ_PER_CPU
  95         def_bool y
  96
  97 config GENERIC_GPIO
  98         def_bool n
  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 SYS_SUPPORTS_CMT
 130         bool
 131
 132 config SYS_SUPPORTS_MTU2
 133         bool
 134
 135 config SYS_SUPPORTS_TMU
 136         bool
 137
 138 config STACKTRACE_SUPPORT
 139         def_bool y
 140
 141 config LOCKDEP_SUPPORT
 142         def_bool y
 143
 144 config HAVE_LATENCYTOP_SUPPORT
 145         def_bool y
 146
 147 config ARCH_HAS_ILOG2_U32
 148         def_bool n
 149
 150 config ARCH_HAS_ILOG2_U64
 151         def_bool n
 152
 153 config ARCH_NO_VIRT_TO_BUS
 154         def_bool y
 155
 156 config ARCH_HAS_DEFAULT_IDLE
 157         def_bool y
 158
 159 config NO_IOPORT
 160         def_bool !PCI
 161         depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
 162                    !SH_HP6XX && !SH_SOLUTION_ENGINE
 163
 164 config IO_TRAPPED
 165         bool
 166
 167 config SWAP_IO_SPACE
 168         bool
 169
 170 config DMA_COHERENT
 171         bool
 172
 173 config DMA_NONCOHERENT
 174         def_bool !DMA_COHERENT
 175
 176 config NEED_DMA_MAP_STATE
 177         def_bool DMA_NONCOHERENT
 178
 179 config NEED_SG_DMA_LENGTH
 180         def_bool y
 181
 182 source "init/Kconfig"
 183
 184 source "kernel/Kconfig.freezer"
 185
 186 menu "System type"
 187
 188 #
 189 # Processor families
 190 #
 191 config CPU_SH2
 192         bool
 193
 194 config CPU_SH2A
 195         bool
 196         select CPU_SH2
 197         select UNCACHED_MAPPING
 198
 199 config CPU_SH3
 200         bool
 201         select CPU_HAS_INTEVT
 202         select CPU_HAS_SR_RB
 203         select SYS_SUPPORTS_TMU
 204
 205 config CPU_SH4
 206         bool
 207         select CPU_HAS_INTEVT
 208         select CPU_HAS_SR_RB
 209         select CPU_HAS_FPU if !CPU_SH4AL_DSP
 210         select SYS_SUPPORTS_TMU
 211         select SYS_SUPPORTS_HUGETLBFS if MMU
 212
 213 config CPU_SH4A
 214         bool
 215         select CPU_SH4
 216
 217 config CPU_SH4AL_DSP
 218         bool
 219         select CPU_SH4A
 220         select CPU_HAS_DSP
 221
 222 config CPU_SH5
 223         bool
 224         select CPU_HAS_FPU
 225         select SYS_SUPPORTS_TMU
 226         select SYS_SUPPORTS_HUGETLBFS if MMU
 227
 228 config CPU_SHX2
 229         bool
 230
 231 config CPU_SHX3
 232         bool
 233         select DMA_COHERENT
 234         select SYS_SUPPORTS_SMP
 235         select SYS_SUPPORTS_NUMA
 236
 237 config ARCH_SHMOBILE
 238         bool
 239         select ARCH_SUSPEND_POSSIBLE
 240         select PM
 241         select PM_RUNTIME
 242
 243 config CPU_HAS_PMU
 244        depends on CPU_SH4 || CPU_SH4A
 245        default y
 246        bool
 247
 248 if SUPERH32
 249
 250 choice
 251         prompt "Processor sub-type selection"
 252
 253 #
 254 # Processor subtypes
 255 #
 256
 257 # SH-2 Processor Support
 258
 259 config CPU_SUBTYPE_SH7619
 260         bool "Support SH7619 processor"
 261         select CPU_SH2
 262         select SYS_SUPPORTS_CMT
 263
 264 # SH-2A Processor Support
 265
 266 config CPU_SUBTYPE_SH7201
 267         bool "Support SH7201 processor"
 268         select CPU_SH2A
 269         select CPU_HAS_FPU
 270         select SYS_SUPPORTS_MTU2
 271
 272 config CPU_SUBTYPE_SH7203
 273         bool "Support SH7203 processor"
 274         select CPU_SH2A
 275         select CPU_HAS_FPU
 276         select SYS_SUPPORTS_CMT
 277         select SYS_SUPPORTS_MTU2
 278         select ARCH_WANT_OPTIONAL_GPIOLIB
 279         select PINCTRL
 280
 281 config CPU_SUBTYPE_SH7206
 282         bool "Support SH7206 processor"
 283         select CPU_SH2A
 284         select SYS_SUPPORTS_CMT
 285         select SYS_SUPPORTS_MTU2
 286
 287 config CPU_SUBTYPE_SH7263
 288         bool "Support SH7263 processor"
 289         select CPU_SH2A
 290         select CPU_HAS_FPU
 291         select SYS_SUPPORTS_CMT
 292         select SYS_SUPPORTS_MTU2
 293
 294 config CPU_SUBTYPE_SH7264
 295         bool "Support SH7264 processor"
 296         select CPU_SH2A
 297         select CPU_HAS_FPU
 298         select SYS_SUPPORTS_CMT
 299         select SYS_SUPPORTS_MTU2
 300         select PINCTRL
 301
 302 config CPU_SUBTYPE_SH7269
 303         bool "Support SH7269 processor"
 304         select CPU_SH2A
 305         select CPU_HAS_FPU
 306         select SYS_SUPPORTS_CMT
 307         select SYS_SUPPORTS_MTU2
 308         select PINCTRL
 309
 310 config CPU_SUBTYPE_MXG
 311         bool "Support MX-G processor"
 312         select CPU_SH2A
 313         select SYS_SUPPORTS_MTU2
 314         help
 315           Select MX-G if running on an R8A03022BG part.
 316
 317 # SH-3 Processor Support
 318
 319 config CPU_SUBTYPE_SH7705
 320         bool "Support SH7705 processor"
 321         select CPU_SH3
 322
 323 config CPU_SUBTYPE_SH7706
 324         bool "Support SH7706 processor"
 325         select CPU_SH3
 326         help
 327           Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
 328
 329 config CPU_SUBTYPE_SH7707
 330         bool "Support SH7707 processor"
 331         select CPU_SH3
 332         help
 333           Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
 334
 335 config CPU_SUBTYPE_SH7708
 336         bool "Support SH7708 processor"
 337         select CPU_SH3
 338         help
 339           Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
 340           if you have a 100 Mhz SH-3 HD6417708R CPU.
 341
 342 config CPU_SUBTYPE_SH7709
 343         bool "Support SH7709 processor"
 344         select CPU_SH3
 345         help
 346           Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
 347
 348 config CPU_SUBTYPE_SH7710
 349         bool "Support SH7710 processor"
 350         select CPU_SH3
 351         select CPU_HAS_DSP
 352         help
 353           Select SH7710 if you have a SH3-DSP SH7710 CPU.
 354
 355 config CPU_SUBTYPE_SH7712
 356         bool "Support SH7712 processor"
 357         select CPU_SH3
 358         select CPU_HAS_DSP
 359         help
 360           Select SH7712 if you have a SH3-DSP SH7712 CPU.
 361
 362 config CPU_SUBTYPE_SH7720
 363         bool "Support SH7720 processor"
 364         select CPU_SH3
 365         select CPU_HAS_DSP
 366         select SYS_SUPPORTS_CMT
 367         select ARCH_WANT_OPTIONAL_GPIOLIB
 368         select USB_ARCH_HAS_OHCI
 369         select USB_OHCI_SH if USB_OHCI_HCD
 370         select PINCTRL
 371         help
 372           Select SH7720 if you have a SH3-DSP SH7720 CPU.
 373
 374 config CPU_SUBTYPE_SH7721
 375         bool "Support SH7721 processor"
 376         select CPU_SH3
 377         select CPU_HAS_DSP
 378         select SYS_SUPPORTS_CMT
 379         select USB_ARCH_HAS_OHCI
 380         select USB_OHCI_SH if USB_OHCI_HCD
 381         help
 382           Select SH7721 if you have a SH3-DSP SH7721 CPU.
 383
 384 # SH-4 Processor Support
 385
 386 config CPU_SUBTYPE_SH7750
 387         bool "Support SH7750 processor"
 388         select CPU_SH4
 389         help
 390           Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
 391
 392 config CPU_SUBTYPE_SH7091
 393         bool "Support SH7091 processor"
 394         select CPU_SH4
 395         help
 396           Select SH7091 if you have an SH-4 based Sega device (such as
 397           the Dreamcast, Naomi, and Naomi 2).
 398
 399 config CPU_SUBTYPE_SH7750R
 400         bool "Support SH7750R processor"
 401         select CPU_SH4
 402
 403 config CPU_SUBTYPE_SH7750S
 404         bool "Support SH7750S processor"
 405         select CPU_SH4
 406
 407 config CPU_SUBTYPE_SH7751
 408         bool "Support SH7751 processor"
 409         select CPU_SH4
 410         help
 411           Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
 412           or if you have a HD6417751R CPU.
 413
 414 config CPU_SUBTYPE_SH7751R
 415         bool "Support SH7751R processor"
 416         select CPU_SH4
 417
 418 config CPU_SUBTYPE_SH7760
 419         bool "Support SH7760 processor"
 420         select CPU_SH4
 421
 422 config CPU_SUBTYPE_SH4_202
 423         bool "Support SH4-202 processor"
 424         select CPU_SH4
 425
 426 # SH-4A Processor Support
 427
 428 config CPU_SUBTYPE_SH7723
 429         bool "Support SH7723 processor"
 430         select CPU_SH4A
 431         select CPU_SHX2
 432         select ARCH_SHMOBILE
 433         select ARCH_SPARSEMEM_ENABLE
 434         select SYS_SUPPORTS_CMT
 435         select ARCH_WANT_OPTIONAL_GPIOLIB
 436         select PINCTRL
 437         help
 438           Select SH7723 if you have an SH-MobileR2 CPU.
 439
 440 config CPU_SUBTYPE_SH7724
 441         bool "Support SH7724 processor"
 442         select CPU_SH4A
 443         select CPU_SHX2
 444         select ARCH_SHMOBILE
 445         select ARCH_SPARSEMEM_ENABLE
 446         select SYS_SUPPORTS_CMT
 447         select ARCH_WANT_OPTIONAL_GPIOLIB
 448         select PINCTRL
 449         help
 450           Select SH7724 if you have an SH-MobileR2R CPU.
 451
 452 config CPU_SUBTYPE_SH7734
 453         bool "Support SH7734 processor"
 454         select CPU_SH4A
 455         select CPU_SHX2
 456         select ARCH_WANT_OPTIONAL_GPIOLIB
 457         select USB_ARCH_HAS_OHCI
 458         select USB_ARCH_HAS_EHCI
 459         select PINCTRL
 460         help
 461           Select SH7734 if you have a SH4A SH7734 CPU.
 462
 463 config CPU_SUBTYPE_SH7757
 464         bool "Support SH7757 processor"
 465         select CPU_SH4A
 466         select CPU_SHX2
 467         select ARCH_WANT_OPTIONAL_GPIOLIB
 468         select USB_ARCH_HAS_OHCI
 469         select USB_ARCH_HAS_EHCI
 470         select PINCTRL
 471         help
 472           Select SH7757 if you have a SH4A SH7757 CPU.
 473
 474 config CPU_SUBTYPE_SH7763
 475         bool "Support SH7763 processor"
 476         select CPU_SH4A
 477         select USB_ARCH_HAS_OHCI
 478         select USB_OHCI_SH if USB_OHCI_HCD
 479         help
 480           Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
 481
 482 config CPU_SUBTYPE_SH7770
 483         bool "Support SH7770 processor"
 484         select CPU_SH4A
 485
 486 config CPU_SUBTYPE_SH7780
 487         bool "Support SH7780 processor"
 488         select CPU_SH4A
 489
 490 config CPU_SUBTYPE_SH7785
 491         bool "Support SH7785 processor"
 492         select CPU_SH4A
 493         select CPU_SHX2
 494         select ARCH_SPARSEMEM_ENABLE
 495         select SYS_SUPPORTS_NUMA
 496         select ARCH_WANT_OPTIONAL_GPIOLIB
 497         select PINCTRL
 498
 499 config CPU_SUBTYPE_SH7786
 500         bool "Support SH7786 processor"
 501         select CPU_SH4A
 502         select CPU_SHX3
 503         select CPU_HAS_PTEAEX
 504         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 505         select ARCH_WANT_OPTIONAL_GPIOLIB
 506         select USB_ARCH_HAS_OHCI
 507         select USB_OHCI_SH if USB_OHCI_HCD
 508         select USB_ARCH_HAS_EHCI
 509         select USB_EHCI_SH if USB_EHCI_HCD
 510         select PINCTRL
 511
 512 config CPU_SUBTYPE_SHX3
 513         bool "Support SH-X3 processor"
 514         select CPU_SH4A
 515         select CPU_SHX3
 516         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 517         select ARCH_REQUIRE_GPIOLIB
 518
 519 # SH4AL-DSP Processor Support
 520
 521 config CPU_SUBTYPE_SH7343
 522         bool "Support SH7343 processor"
 523         select CPU_SH4AL_DSP
 524         select ARCH_SHMOBILE
 525         select SYS_SUPPORTS_CMT
 526
 527 config CPU_SUBTYPE_SH7722
 528         bool "Support SH7722 processor"
 529         select CPU_SH4AL_DSP
 530         select CPU_SHX2
 531         select ARCH_SHMOBILE
 532         select ARCH_SPARSEMEM_ENABLE
 533         select SYS_SUPPORTS_NUMA
 534         select SYS_SUPPORTS_CMT
 535         select ARCH_WANT_OPTIONAL_GPIOLIB
 536         select PINCTRL
 537
 538 config CPU_SUBTYPE_SH7366
 539         bool "Support SH7366 processor"
 540         select CPU_SH4AL_DSP
 541         select CPU_SHX2
 542         select ARCH_SHMOBILE
 543         select ARCH_SPARSEMEM_ENABLE
 544         select SYS_SUPPORTS_NUMA
 545         select SYS_SUPPORTS_CMT
 546
 547 endchoice
 548
 549 endif
 550
 551 if SUPERH64
 552
 553 choice
 554         prompt "Processor sub-type selection"
 555
 556 # SH-5 Processor Support
 557
 558 config CPU_SUBTYPE_SH5_101
 559         bool "Support SH5-101 processor"
 560         select CPU_SH5
 561
 562 config CPU_SUBTYPE_SH5_103
 563         bool "Support SH5-103 processor"
 564         select CPU_SH5
 565
 566 endchoice
 567
 568 endif
 569
 570 source "arch/sh/mm/Kconfig"
 571
 572 source "arch/sh/Kconfig.cpu"
 573
 574 source "arch/sh/boards/Kconfig"
 575
 576 menu "Timer and clock configuration"
 577
 578 config SH_TIMER_TMU
 579         bool "TMU timer driver"
 580         depends on SYS_SUPPORTS_TMU
 581         default y
 582         help
 583           This enables the build of the TMU timer driver.
 584
 585 config SH_TIMER_CMT
 586         bool "CMT timer driver"
 587         depends on SYS_SUPPORTS_CMT
 588         default y
 589         help
 590           This enables build of the CMT timer driver.
 591
 592 config SH_TIMER_MTU2
 593         bool "MTU2 timer driver"
 594         depends on SYS_SUPPORTS_MTU2
 595         default y
 596         help
 597           This enables build of the MTU2 timer driver.
 598
 599 config SH_PCLK_FREQ
 600         int "Peripheral clock frequency (in Hz)"
 601         depends on SH_CLK_CPG_LEGACY
 602         default "31250000" if CPU_SUBTYPE_SH7619
 603         default "33333333" if CPU_SUBTYPE_SH7770 || \
 604                               CPU_SUBTYPE_SH7760 || \
 605                               CPU_SUBTYPE_SH7705 || \
 606                               CPU_SUBTYPE_SH7203 || \
 607                               CPU_SUBTYPE_SH7206 || \
 608                               CPU_SUBTYPE_SH7263 || \
 609                               CPU_SUBTYPE_MXG
 610         default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
 611         default "66000000" if CPU_SUBTYPE_SH4_202
 612         default "50000000"
 613         help
 614           This option is used to specify the peripheral clock frequency.
 615           This is necessary for determining the reference clock value on
 616           platforms lacking an RTC.
 617
 618 config SH_CLK_CPG
 619         def_bool y
 620
 621 config SH_CLK_CPG_LEGACY
 622         depends on SH_CLK_CPG
 623         def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
 624                       !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
 625                       !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
 626                       !CPU_SUBTYPE_SH7269
 627
 628 endmenu
 629
 630 menu "CPU Frequency scaling"
 631
 632 source "drivers/cpufreq/Kconfig"
 633
 634 config SH_CPU_FREQ
 635         tristate "SuperH CPU Frequency driver"
 636         depends on CPU_FREQ
 637         select CPU_FREQ_TABLE
 638         help
 639           This adds the cpufreq driver for SuperH. Any CPU that supports
 640           clock rate rounding through the clock framework can use this
 641           driver. While it will make the kernel slightly larger, this is
 642           harmless for CPUs that don't support rate rounding. The driver
 643           will also generate a notice in the boot log before disabling
 644           itself if the CPU in question is not capable of rate rounding.
 645
 646           For details, take a look at <file:Documentation/cpu-freq>.
 647
 648           If unsure, say N.
 649
 650 endmenu
 651
 652 source "arch/sh/drivers/Kconfig"
 653
 654 endmenu
 655
 656 menu "Kernel features"
 657
 658 source kernel/Kconfig.hz
 659
 660 config KEXEC
 661         bool "kexec system call (EXPERIMENTAL)"
 662         depends on SUPERH32 && EXPERIMENTAL && MMU
 663         help
 664           kexec is a system call that implements the ability to shutdown your
 665           current kernel, and to start another kernel.  It is like a reboot
 666           but it is independent of the system firmware.  And like a reboot
 667           you can start any kernel with it, not just Linux.
 668
 669           The name comes from the similarity to the exec system call.
 670
 671           It is an ongoing process to be certain the hardware in a machine
 672           is properly shutdown, so do not be surprised if this code does not
 673           initially work for you.  It may help to enable device hotplugging
 674           support.  As of this writing the exact hardware interface is
 675           strongly in flux, so no good recommendation can be made.
 676
 677 config CRASH_DUMP
 678         bool "kernel crash dumps (EXPERIMENTAL)"
 679         depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
 680         help
 681           Generate crash dump after being started by kexec.
 682           This should be normally only set in special crash dump kernels
 683           which are loaded in the main kernel with kexec-tools into
 684           a specially reserved region and then later executed after
 685           a crash by kdump/kexec. The crash dump kernel must be compiled
 686           to a memory address not used by the main kernel using
 687           PHYSICAL_START.
 688
 689           For more details see Documentation/kdump/kdump.txt
 690
 691 config KEXEC_JUMP
 692         bool "kexec jump (EXPERIMENTAL)"
 693         depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
 694         help
 695           Jump between original kernel and kexeced kernel and invoke
 696           code via KEXEC
 697
 698 config PHYSICAL_START
 699         hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
 700         default MEMORY_START
 701         ---help---
 702           This gives the physical address where the kernel is loaded
 703           and is ordinarily the same as MEMORY_START.
 704
 705           Different values are primarily used in the case of kexec on panic
 706           where the fail safe kernel needs to run at a different address
 707           than the panic-ed kernel.
 708
 709 config SECCOMP
 710         bool "Enable seccomp to safely compute untrusted bytecode"
 711         depends on PROC_FS
 712         help
 713           This kernel feature is useful for number crunching applications
 714           that may need to compute untrusted bytecode during their
 715           execution. By using pipes or other transports made available to
 716           the process as file descriptors supporting the read/write
 717           syscalls, it's possible to isolate those applications in
 718           their own address space using seccomp. Once seccomp is
 719           enabled via prctl, it cannot be disabled and the task is only
 720           allowed to execute a few safe syscalls defined by each seccomp
 721           mode.
 722
 723           If unsure, say N.
 724
 725 config CC_STACKPROTECTOR
 726         bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
 727         depends on SUPERH32 && EXPERIMENTAL
 728         help
 729           This option turns on the -fstack-protector GCC feature. This
 730           feature puts, at the beginning of functions, a canary value on
 731           the stack just before the return address, and validates
 732           the value just before actually returning.  Stack based buffer
 733           overflows (that need to overwrite this return address) now also
 734           overwrite the canary, which gets detected and the attack is then
 735           neutralized via a kernel panic.
 736
 737           This feature requires gcc version 4.2 or above.
 738
 739 config SMP
 740         bool "Symmetric multi-processing support"
 741         depends on SYS_SUPPORTS_SMP
 742         select USE_GENERIC_SMP_HELPERS
 743         ---help---
 744           This enables support for systems with more than one CPU. If you have
 745           a system with only one CPU, like most personal computers, say N. If
 746           you have a system with more than one CPU, say Y.
 747
 748           If you say N here, the kernel will run on single and multiprocessor
 749           machines, but will use only one CPU of a multiprocessor machine. If
 750           you say Y here, the kernel will run on many, but not all,
 751           singleprocessor machines. On a singleprocessor machine, the kernel
 752           will run faster if you say N here.
 753
 754           People using multiprocessor machines who say Y here should also say
 755           Y to "Enhanced Real Time Clock Support", below.
 756
 757           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 758           available at <http://www.tldp.org/docs.html#howto>.
 759
 760           If you don't know what to do here, say N.
 761
 762 config NR_CPUS
 763         int "Maximum number of CPUs (2-32)"
 764         range 2 32
 765         depends on SMP
 766         default "4" if CPU_SUBTYPE_SHX3
 767         default "2"
 768         help
 769           This allows you to specify the maximum number of CPUs which this
 770           kernel will support.  The maximum supported value is 32 and the
 771           minimum value which makes sense is 2.
 772
 773           This is purely to save memory - each supported CPU adds
 774           approximately eight kilobytes to the kernel image.
 775
 776 config HOTPLUG_CPU
 777         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 778         depends on SMP && HOTPLUG && EXPERIMENTAL
 779         help
 780           Say Y here to experiment with turning CPUs off and on.  CPUs
 781           can be controlled through /sys/devices/system/cpu.
 782
 783 source "kernel/Kconfig.preempt"
 784
 785 config GUSA
 786         def_bool y
 787         depends on !SMP && SUPERH32
 788         help
 789           This enables support for gUSA (general UserSpace Atomicity).
 790           This is the default implementation for both UP and non-ll/sc
 791           CPUs, and is used by the libc, amongst others.
 792
 793           For additional information, design information can be found
 794           in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
 795
 796           This should only be disabled for special cases where alternate
 797           atomicity implementations exist.
 798
 799 config GUSA_RB
 800         bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
 801         depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
 802         help
 803           Enabling this option will allow the kernel to implement some
 804           atomic operations using a software implementation of load-locked/
 805           store-conditional (LLSC). On machines which do not have hardware
 806           LLSC, this should be more efficient than the other alternative of
 807           disabling interrupts around the atomic sequence.
 808
 809 config HW_PERF_EVENTS
 810         bool "Enable hardware performance counter support for perf events"
 811         depends on PERF_EVENTS && CPU_HAS_PMU
 812         default y
 813         help
 814           Enable hardware performance counter support for perf events. If
 815           disabled, perf events will use software events only.
 816
 817 source "drivers/sh/Kconfig"
 818
 819 endmenu
 820
 821 menu "Boot options"
 822
 823 config ZERO_PAGE_OFFSET
 824         hex
 825         default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
 826                                 SH_7751_SOLUTION_ENGINE
 827         default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
 828         default "0x00002000" if PAGE_SIZE_8KB
 829         default "0x00001000"
 830         help
 831           This sets the default offset of zero page.
 832
 833 config BOOT_LINK_OFFSET
 834         hex
 835         default "0x00210000" if SH_SHMIN
 836         default "0x00400000" if SH_CAYMAN
 837         default "0x00810000" if SH_7780_SOLUTION_ENGINE
 838         default "0x009e0000" if SH_TITAN
 839         default "0x01800000" if SH_SDK7780
 840         default "0x02000000" if SH_EDOSK7760
 841         default "0x00800000"
 842         help
 843           This option allows you to set the link address offset of the zImage.
 844           This can be useful if you are on a board which has a small amount of
 845           memory.
 846
 847 config ENTRY_OFFSET
 848         hex
 849         default "0x00001000" if PAGE_SIZE_4KB
 850         default "0x00002000" if PAGE_SIZE_8KB
 851         default "0x00004000" if PAGE_SIZE_16KB
 852         default "0x00010000" if PAGE_SIZE_64KB
 853         default "0x00000000"
 854
 855 config ROMIMAGE_MMCIF
 856         bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
 857         depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
 858         help
 859           Say Y here to include experimental MMCIF loading code in
 860           romImage. With this enabled it is possible to write the romImage
 861           kernel image to an MMC card and boot the kernel straight from
 862           the reset vector. At reset the processor Mask ROM will load the
 863           first part of the romImage which in turn loads the rest the kernel
 864           image to RAM using the MMCIF hardware block.
 865
 866 choice
 867         prompt "Kernel command line"
 868         optional
 869         default CMDLINE_OVERWRITE
 870         help
 871           Setting this option allows the kernel command line arguments
 872           to be set.
 873
 874 config CMDLINE_OVERWRITE
 875         bool "Overwrite bootloader kernel arguments"
 876         help
 877           Given string will overwrite any arguments passed in by
 878           a bootloader.
 879
 880 config CMDLINE_EXTEND
 881         bool "Extend bootloader kernel arguments"
 882         help
 883           Given string will be concatenated with arguments passed in
 884           by a bootloader.
 885
 886 endchoice
 887
 888 config CMDLINE
 889         string "Kernel command line arguments string"
 890         depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
 891         default "console=ttySC1,115200"
 892
 893 endmenu
 894
 895 menu "Bus options"
 896
 897 config SUPERHYWAY
 898         tristate "SuperHyway Bus support"
 899         depends on CPU_SUBTYPE_SH4_202
 900
 901 config MAPLE
 902         bool "Maple Bus support"
 903         depends on SH_DREAMCAST
 904         help
 905          The Maple Bus is SEGA's serial communication bus for peripherals
 906          on the Dreamcast. Without this bus support you won't be able to
 907          get your Dreamcast keyboard etc to work, so most users
 908          probably want to say 'Y' here, unless you are only using the
 909          Dreamcast with a serial line terminal or a remote network
 910          connection.
 911
 912 config PCI
 913         bool "PCI support"
 914         depends on SYS_SUPPORTS_PCI
 915         select PCI_DOMAINS
 916         select GENERIC_PCI_IOMAP
 917         select NO_GENERIC_PCI_IOPORT_MAP
 918         help
 919           Find out whether you have a PCI motherboard. PCI is the name of a
 920           bus system, i.e. the way the CPU talks to the other stuff inside
 921           your box. If you have PCI, say Y, otherwise N.
 922
 923 config PCI_DOMAINS
 924         bool
 925
 926 source "drivers/pci/pcie/Kconfig"
 927
 928 source "drivers/pci/Kconfig"
 929
 930 source "drivers/pcmcia/Kconfig"
 931
 932 source "drivers/pci/hotplug/Kconfig"
 933
 934 endmenu
 935
 936 menu "Executable file formats"
 937
 938 source "fs/Kconfig.binfmt"
 939
 940 endmenu
 941
 942 menu "Power management options (EXPERIMENTAL)"
 943 depends on EXPERIMENTAL
 944
 945 source "kernel/power/Kconfig"
 946
 947 source "drivers/cpuidle/Kconfig"
 948
 949 endmenu
 950
 951 source "net/Kconfig"
 952
 953 source "drivers/Kconfig"
 954
 955 source "fs/Kconfig"
 956
 957 source "arch/sh/Kconfig.debug"
 958
 959 source "security/Kconfig"
 960
 961 source "crypto/Kconfig"
 962
 963 source "lib/Kconfig"