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