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         select KALLSYMS
  64
  65 config ARCH_DEFCONFIG
  66         string
  67         default "arch/sh/configs/shx3_defconfig" if SUPERH32
  68         default "arch/sh/configs/cayman_defconfig" if SUPERH64
  69
  70 config RWSEM_GENERIC_SPINLOCK
  71         def_bool y
  72
  73 config RWSEM_XCHGADD_ALGORITHM
  74         bool
  75
  76 config GENERIC_BUG
  77         def_bool y
  78         depends on BUG && SUPERH32
  79
  80 config GENERIC_CSUM
  81         def_bool y
  82         depends on SUPERH64
  83
  84 config GENERIC_HWEIGHT
  85         def_bool y
  86
  87 config IRQ_PER_CPU
  88         def_bool y
  89
  90 config GENERIC_GPIO
  91         def_bool n
  92
  93 config GENERIC_CALIBRATE_DELAY
  94         bool
  95
  96 config GENERIC_LOCKBREAK
  97         def_bool y
  98         depends on SMP && PREEMPT
  99
 100 config ARCH_SUSPEND_POSSIBLE
 101         def_bool n
 102
 103 config ARCH_HIBERNATION_POSSIBLE
 104         def_bool n
 105
 106 config SYS_SUPPORTS_APM_EMULATION
 107         bool
 108         select ARCH_SUSPEND_POSSIBLE
 109
 110 config SYS_SUPPORTS_HUGETLBFS
 111         bool
 112
 113 config SYS_SUPPORTS_SMP
 114         bool
 115
 116 config SYS_SUPPORTS_NUMA
 117         bool
 118
 119 config SYS_SUPPORTS_PCI
 120         bool
 121
 122 config SYS_SUPPORTS_CMT
 123         bool
 124
 125 config SYS_SUPPORTS_MTU2
 126         bool
 127
 128 config SYS_SUPPORTS_TMU
 129         bool
 130
 131 config STACKTRACE_SUPPORT
 132         def_bool y
 133
 134 config LOCKDEP_SUPPORT
 135         def_bool y
 136
 137 config HAVE_LATENCYTOP_SUPPORT
 138         def_bool y
 139
 140 config ARCH_HAS_ILOG2_U32
 141         def_bool n
 142
 143 config ARCH_HAS_ILOG2_U64
 144         def_bool n
 145
 146 config ARCH_NO_VIRT_TO_BUS
 147         def_bool y
 148
 149 config ARCH_HAS_DEFAULT_IDLE
 150         def_bool y
 151
 152 config NO_IOPORT
 153         def_bool !PCI
 154         depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
 155                    !SH_HP6XX && !SH_SOLUTION_ENGINE
 156
 157 config IO_TRAPPED
 158         bool
 159
 160 config SWAP_IO_SPACE
 161         bool
 162
 163 config DMA_COHERENT
 164         bool
 165
 166 config DMA_NONCOHERENT
 167         def_bool !DMA_COHERENT
 168
 169 config NEED_DMA_MAP_STATE
 170         def_bool DMA_NONCOHERENT
 171
 172 config NEED_SG_DMA_LENGTH
 173         def_bool y
 174
 175 source "init/Kconfig"
 176
 177 source "kernel/Kconfig.freezer"
 178
 179 menu "System type"
 180
 181 #
 182 # Processor families
 183 #
 184 config CPU_SH2
 185         bool
 186
 187 config CPU_SH2A
 188         bool
 189         select CPU_SH2
 190         select UNCACHED_MAPPING
 191
 192 config CPU_SH3
 193         bool
 194         select CPU_HAS_INTEVT
 195         select CPU_HAS_SR_RB
 196         select SYS_SUPPORTS_TMU
 197
 198 config CPU_SH4
 199         bool
 200         select CPU_HAS_INTEVT
 201         select CPU_HAS_SR_RB
 202         select CPU_HAS_FPU if !CPU_SH4AL_DSP
 203         select SYS_SUPPORTS_TMU
 204         select SYS_SUPPORTS_HUGETLBFS if MMU
 205
 206 config CPU_SH4A
 207         bool
 208         select CPU_SH4
 209
 210 config CPU_SH4AL_DSP
 211         bool
 212         select CPU_SH4A
 213         select CPU_HAS_DSP
 214
 215 config CPU_SH5
 216         bool
 217         select CPU_HAS_FPU
 218         select SYS_SUPPORTS_TMU
 219         select SYS_SUPPORTS_HUGETLBFS if MMU
 220
 221 config CPU_SHX2
 222         bool
 223
 224 config CPU_SHX3
 225         bool
 226         select DMA_COHERENT
 227         select SYS_SUPPORTS_SMP
 228         select SYS_SUPPORTS_NUMA
 229
 230 config ARCH_SHMOBILE
 231         bool
 232         select ARCH_SUSPEND_POSSIBLE
 233         select PM
 234         select PM_RUNTIME
 235
 236 config CPU_HAS_PMU
 237        depends on CPU_SH4 || CPU_SH4A
 238        default y
 239        bool
 240
 241 if SUPERH32
 242
 243 choice
 244         prompt "Processor sub-type selection"
 245
 246 #
 247 # Processor subtypes
 248 #
 249
 250 # SH-2 Processor Support
 251
 252 config CPU_SUBTYPE_SH7619
 253         bool "Support SH7619 processor"
 254         select CPU_SH2
 255         select SYS_SUPPORTS_CMT
 256
 257 # SH-2A Processor Support
 258
 259 config CPU_SUBTYPE_SH7201
 260         bool "Support SH7201 processor"
 261         select CPU_SH2A
 262         select CPU_HAS_FPU
 263         select SYS_SUPPORTS_MTU2
 264
 265 config CPU_SUBTYPE_SH7203
 266         bool "Support SH7203 processor"
 267         select CPU_SH2A
 268         select CPU_HAS_FPU
 269         select SYS_SUPPORTS_CMT
 270         select SYS_SUPPORTS_MTU2
 271         select ARCH_WANT_OPTIONAL_GPIOLIB
 272
 273 config CPU_SUBTYPE_SH7206
 274         bool "Support SH7206 processor"
 275         select CPU_SH2A
 276         select SYS_SUPPORTS_CMT
 277         select SYS_SUPPORTS_MTU2
 278
 279 config CPU_SUBTYPE_SH7263
 280         bool "Support SH7263 processor"
 281         select CPU_SH2A
 282         select CPU_HAS_FPU
 283         select SYS_SUPPORTS_CMT
 284         select SYS_SUPPORTS_MTU2
 285
 286 config CPU_SUBTYPE_SH7264
 287         bool "Support SH7264 processor"
 288         select CPU_SH2A
 289         select CPU_HAS_FPU
 290         select SYS_SUPPORTS_CMT
 291         select SYS_SUPPORTS_MTU2
 292
 293 config CPU_SUBTYPE_SH7269
 294         bool "Support SH7269 processor"
 295         select CPU_SH2A
 296         select CPU_HAS_FPU
 297         select SYS_SUPPORTS_CMT
 298         select SYS_SUPPORTS_MTU2
 299
 300 config CPU_SUBTYPE_MXG
 301         bool "Support MX-G processor"
 302         select CPU_SH2A
 303         select SYS_SUPPORTS_MTU2
 304         help
 305           Select MX-G if running on an R8A03022BG part.
 306
 307 # SH-3 Processor Support
 308
 309 config CPU_SUBTYPE_SH7705
 310         bool "Support SH7705 processor"
 311         select CPU_SH3
 312
 313 config CPU_SUBTYPE_SH7706
 314         bool "Support SH7706 processor"
 315         select CPU_SH3
 316         help
 317           Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
 318
 319 config CPU_SUBTYPE_SH7707
 320         bool "Support SH7707 processor"
 321         select CPU_SH3
 322         help
 323           Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
 324
 325 config CPU_SUBTYPE_SH7708
 326         bool "Support SH7708 processor"
 327         select CPU_SH3
 328         help
 329           Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
 330           if you have a 100 Mhz SH-3 HD6417708R CPU.
 331
 332 config CPU_SUBTYPE_SH7709
 333         bool "Support SH7709 processor"
 334         select CPU_SH3
 335         help
 336           Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
 337
 338 config CPU_SUBTYPE_SH7710
 339         bool "Support SH7710 processor"
 340         select CPU_SH3
 341         select CPU_HAS_DSP
 342         help
 343           Select SH7710 if you have a SH3-DSP SH7710 CPU.
 344
 345 config CPU_SUBTYPE_SH7712
 346         bool "Support SH7712 processor"
 347         select CPU_SH3
 348         select CPU_HAS_DSP
 349         help
 350           Select SH7712 if you have a SH3-DSP SH7712 CPU.
 351
 352 config CPU_SUBTYPE_SH7720
 353         bool "Support SH7720 processor"
 354         select CPU_SH3
 355         select CPU_HAS_DSP
 356         select SYS_SUPPORTS_CMT
 357         select ARCH_WANT_OPTIONAL_GPIOLIB
 358         select USB_ARCH_HAS_OHCI
 359         select USB_OHCI_SH if USB_OHCI_HCD
 360         help
 361           Select SH7720 if you have a SH3-DSP SH7720 CPU.
 362
 363 config CPU_SUBTYPE_SH7721
 364         bool "Support SH7721 processor"
 365         select CPU_SH3
 366         select CPU_HAS_DSP
 367         select SYS_SUPPORTS_CMT
 368         select USB_ARCH_HAS_OHCI
 369         select USB_OHCI_SH if USB_OHCI_HCD
 370         help
 371           Select SH7721 if you have a SH3-DSP SH7721 CPU.
 372
 373 # SH-4 Processor Support
 374
 375 config CPU_SUBTYPE_SH7750
 376         bool "Support SH7750 processor"
 377         select CPU_SH4
 378         help
 379           Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
 380
 381 config CPU_SUBTYPE_SH7091
 382         bool "Support SH7091 processor"
 383         select CPU_SH4
 384         help
 385           Select SH7091 if you have an SH-4 based Sega device (such as
 386           the Dreamcast, Naomi, and Naomi 2).
 387
 388 config CPU_SUBTYPE_SH7750R
 389         bool "Support SH7750R processor"
 390         select CPU_SH4
 391
 392 config CPU_SUBTYPE_SH7750S
 393         bool "Support SH7750S processor"
 394         select CPU_SH4
 395
 396 config CPU_SUBTYPE_SH7751
 397         bool "Support SH7751 processor"
 398         select CPU_SH4
 399         help
 400           Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
 401           or if you have a HD6417751R CPU.
 402
 403 config CPU_SUBTYPE_SH7751R
 404         bool "Support SH7751R processor"
 405         select CPU_SH4
 406
 407 config CPU_SUBTYPE_SH7760
 408         bool "Support SH7760 processor"
 409         select CPU_SH4
 410
 411 config CPU_SUBTYPE_SH4_202
 412         bool "Support SH4-202 processor"
 413         select CPU_SH4
 414
 415 # SH-4A Processor Support
 416
 417 config CPU_SUBTYPE_SH7723
 418         bool "Support SH7723 processor"
 419         select CPU_SH4A
 420         select CPU_SHX2
 421         select ARCH_SHMOBILE
 422         select ARCH_SPARSEMEM_ENABLE
 423         select SYS_SUPPORTS_CMT
 424         select ARCH_WANT_OPTIONAL_GPIOLIB
 425         help
 426           Select SH7723 if you have an SH-MobileR2 CPU.
 427
 428 config CPU_SUBTYPE_SH7724
 429         bool "Support SH7724 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         help
 437           Select SH7724 if you have an SH-MobileR2R CPU.
 438
 439 config CPU_SUBTYPE_SH7734
 440         bool "Support SH7734 processor"
 441         select CPU_SH4A
 442         select CPU_SHX2
 443         select ARCH_WANT_OPTIONAL_GPIOLIB
 444         select USB_ARCH_HAS_OHCI
 445         select USB_ARCH_HAS_EHCI
 446         help
 447           Select SH7734 if you have a SH4A SH7734 CPU.
 448
 449 config CPU_SUBTYPE_SH7757
 450         bool "Support SH7757 processor"
 451         select CPU_SH4A
 452         select CPU_SHX2
 453         select ARCH_WANT_OPTIONAL_GPIOLIB
 454         select USB_ARCH_HAS_OHCI
 455         select USB_ARCH_HAS_EHCI
 456         help
 457           Select SH7757 if you have a SH4A SH7757 CPU.
 458
 459 config CPU_SUBTYPE_SH7763
 460         bool "Support SH7763 processor"
 461         select CPU_SH4A
 462         select USB_ARCH_HAS_OHCI
 463         select USB_OHCI_SH if USB_OHCI_HCD
 464         help
 465           Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
 466
 467 config CPU_SUBTYPE_SH7770
 468         bool "Support SH7770 processor"
 469         select CPU_SH4A
 470
 471 config CPU_SUBTYPE_SH7780
 472         bool "Support SH7780 processor"
 473         select CPU_SH4A
 474
 475 config CPU_SUBTYPE_SH7785
 476         bool "Support SH7785 processor"
 477         select CPU_SH4A
 478         select CPU_SHX2
 479         select ARCH_SPARSEMEM_ENABLE
 480         select SYS_SUPPORTS_NUMA
 481         select ARCH_WANT_OPTIONAL_GPIOLIB
 482
 483 config CPU_SUBTYPE_SH7786
 484         bool "Support SH7786 processor"
 485         select CPU_SH4A
 486         select CPU_SHX3
 487         select CPU_HAS_PTEAEX
 488         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 489         select ARCH_WANT_OPTIONAL_GPIOLIB
 490         select USB_ARCH_HAS_OHCI
 491         select USB_OHCI_SH if USB_OHCI_HCD
 492         select USB_ARCH_HAS_EHCI
 493         select USB_EHCI_SH if USB_EHCI_HCD
 494
 495 config CPU_SUBTYPE_SHX3
 496         bool "Support SH-X3 processor"
 497         select CPU_SH4A
 498         select CPU_SHX3
 499         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 500         select ARCH_REQUIRE_GPIOLIB
 501
 502 # SH4AL-DSP Processor Support
 503
 504 config CPU_SUBTYPE_SH7343
 505         bool "Support SH7343 processor"
 506         select CPU_SH4AL_DSP
 507         select ARCH_SHMOBILE
 508         select SYS_SUPPORTS_CMT
 509
 510 config CPU_SUBTYPE_SH7722
 511         bool "Support SH7722 processor"
 512         select CPU_SH4AL_DSP
 513         select CPU_SHX2
 514         select ARCH_SHMOBILE
 515         select ARCH_SPARSEMEM_ENABLE
 516         select SYS_SUPPORTS_NUMA
 517         select SYS_SUPPORTS_CMT
 518         select ARCH_WANT_OPTIONAL_GPIOLIB
 519
 520 config CPU_SUBTYPE_SH7366
 521         bool "Support SH7366 processor"
 522         select CPU_SH4AL_DSP
 523         select CPU_SHX2
 524         select ARCH_SHMOBILE
 525         select ARCH_SPARSEMEM_ENABLE
 526         select SYS_SUPPORTS_NUMA
 527         select SYS_SUPPORTS_CMT
 528
 529 endchoice
 530
 531 endif
 532
 533 if SUPERH64
 534
 535 choice
 536         prompt "Processor sub-type selection"
 537
 538 # SH-5 Processor Support
 539
 540 config CPU_SUBTYPE_SH5_101
 541         bool "Support SH5-101 processor"
 542         select CPU_SH5
 543
 544 config CPU_SUBTYPE_SH5_103
 545         bool "Support SH5-103 processor"
 546         select CPU_SH5
 547
 548 endchoice
 549
 550 endif
 551
 552 source "arch/sh/mm/Kconfig"
 553
 554 source "arch/sh/Kconfig.cpu"
 555
 556 source "arch/sh/boards/Kconfig"
 557
 558 menu "Timer and clock configuration"
 559
 560 config SH_TIMER_TMU
 561         bool "TMU timer driver"
 562         depends on SYS_SUPPORTS_TMU
 563         default y
 564         help
 565           This enables the build of the TMU timer driver.
 566
 567 config SH_TIMER_CMT
 568         bool "CMT timer driver"
 569         depends on SYS_SUPPORTS_CMT
 570         default y
 571         help
 572           This enables build of the CMT timer driver.
 573
 574 config SH_TIMER_MTU2
 575         bool "MTU2 timer driver"
 576         depends on SYS_SUPPORTS_MTU2
 577         default y
 578         help
 579           This enables build of the MTU2 timer driver.
 580
 581 config SH_PCLK_FREQ
 582         int "Peripheral clock frequency (in Hz)"
 583         depends on SH_CLK_CPG_LEGACY
 584         default "31250000" if CPU_SUBTYPE_SH7619
 585         default "33333333" if CPU_SUBTYPE_SH7770 || \
 586                               CPU_SUBTYPE_SH7760 || \
 587                               CPU_SUBTYPE_SH7705 || \
 588                               CPU_SUBTYPE_SH7203 || \
 589                               CPU_SUBTYPE_SH7206 || \
 590                               CPU_SUBTYPE_SH7263 || \
 591                               CPU_SUBTYPE_MXG
 592         default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
 593         default "66000000" if CPU_SUBTYPE_SH4_202
 594         default "50000000"
 595         help
 596           This option is used to specify the peripheral clock frequency.
 597           This is necessary for determining the reference clock value on
 598           platforms lacking an RTC.
 599
 600 config SH_CLK_CPG
 601         def_bool y
 602
 603 config SH_CLK_CPG_LEGACY
 604         depends on SH_CLK_CPG
 605         def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
 606                       !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
 607                       !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
 608                       !CPU_SUBTYPE_SH7269
 609
 610 endmenu
 611
 612 menu "CPU Frequency scaling"
 613
 614 source "drivers/cpufreq/Kconfig"
 615
 616 config SH_CPU_FREQ
 617         tristate "SuperH CPU Frequency driver"
 618         depends on CPU_FREQ
 619         select CPU_FREQ_TABLE
 620         help
 621           This adds the cpufreq driver for SuperH. Any CPU that supports
 622           clock rate rounding through the clock framework can use this
 623           driver. While it will make the kernel slightly larger, this is
 624           harmless for CPUs that don't support rate rounding. The driver
 625           will also generate a notice in the boot log before disabling
 626           itself if the CPU in question is not capable of rate rounding.
 627
 628           For details, take a look at <file:Documentation/cpu-freq>.
 629
 630           If unsure, say N.
 631
 632 endmenu
 633
 634 source "arch/sh/drivers/Kconfig"
 635
 636 endmenu
 637
 638 menu "Kernel features"
 639
 640 source kernel/Kconfig.hz
 641
 642 config KEXEC
 643         bool "kexec system call (EXPERIMENTAL)"
 644         depends on SUPERH32 && EXPERIMENTAL && MMU
 645         help
 646           kexec is a system call that implements the ability to shutdown your
 647           current kernel, and to start another kernel.  It is like a reboot
 648           but it is independent of the system firmware.  And like a reboot
 649           you can start any kernel with it, not just Linux.
 650
 651           The name comes from the similarity to the exec system call.
 652
 653           It is an ongoing process to be certain the hardware in a machine
 654           is properly shutdown, so do not be surprised if this code does not
 655           initially work for you.  It may help to enable device hotplugging
 656           support.  As of this writing the exact hardware interface is
 657           strongly in flux, so no good recommendation can be made.
 658
 659 config CRASH_DUMP
 660         bool "kernel crash dumps (EXPERIMENTAL)"
 661         depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
 662         help
 663           Generate crash dump after being started by kexec.
 664           This should be normally only set in special crash dump kernels
 665           which are loaded in the main kernel with kexec-tools into
 666           a specially reserved region and then later executed after
 667           a crash by kdump/kexec. The crash dump kernel must be compiled
 668           to a memory address not used by the main kernel using
 669           PHYSICAL_START.
 670
 671           For more details see Documentation/kdump/kdump.txt
 672
 673 config KEXEC_JUMP
 674         bool "kexec jump (EXPERIMENTAL)"
 675         depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
 676         help
 677           Jump between original kernel and kexeced kernel and invoke
 678           code via KEXEC
 679
 680 config PHYSICAL_START
 681         hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
 682         default MEMORY_START
 683         ---help---
 684           This gives the physical address where the kernel is loaded
 685           and is ordinarily the same as MEMORY_START.
 686
 687           Different values are primarily used in the case of kexec on panic
 688           where the fail safe kernel needs to run at a different address
 689           than the panic-ed kernel.
 690
 691 config SECCOMP
 692         bool "Enable seccomp to safely compute untrusted bytecode"
 693         depends on PROC_FS
 694         help
 695           This kernel feature is useful for number crunching applications
 696           that may need to compute untrusted bytecode during their
 697           execution. By using pipes or other transports made available to
 698           the process as file descriptors supporting the read/write
 699           syscalls, it's possible to isolate those applications in
 700           their own address space using seccomp. Once seccomp is
 701           enabled via prctl, it cannot be disabled and the task is only
 702           allowed to execute a few safe syscalls defined by each seccomp
 703           mode.
 704
 705           If unsure, say N.
 706
 707 config CC_STACKPROTECTOR
 708         bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
 709         depends on SUPERH32 && EXPERIMENTAL
 710         help
 711           This option turns on the -fstack-protector GCC feature. This
 712           feature puts, at the beginning of functions, a canary value on
 713           the stack just before the return address, and validates
 714           the value just before actually returning.  Stack based buffer
 715           overflows (that need to overwrite this return address) now also
 716           overwrite the canary, which gets detected and the attack is then
 717           neutralized via a kernel panic.
 718
 719           This feature requires gcc version 4.2 or above.
 720
 721 config SMP
 722         bool "Symmetric multi-processing support"
 723         depends on SYS_SUPPORTS_SMP
 724         select USE_GENERIC_SMP_HELPERS
 725         ---help---
 726           This enables support for systems with more than one CPU. If you have
 727           a system with only one CPU, like most personal computers, say N. If
 728           you have a system with more than one CPU, say Y.
 729
 730           If you say N here, the kernel will run on single and multiprocessor
 731           machines, but will use only one CPU of a multiprocessor machine. If
 732           you say Y here, the kernel will run on many, but not all,
 733           singleprocessor machines. On a singleprocessor machine, the kernel
 734           will run faster if you say N here.
 735
 736           People using multiprocessor machines who say Y here should also say
 737           Y to "Enhanced Real Time Clock Support", below.
 738
 739           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 740           available at <http://www.tldp.org/docs.html#howto>.
 741
 742           If you don't know what to do here, say N.
 743
 744 config NR_CPUS
 745         int "Maximum number of CPUs (2-32)"
 746         range 2 32
 747         depends on SMP
 748         default "4" if CPU_SUBTYPE_SHX3
 749         default "2"
 750         help
 751           This allows you to specify the maximum number of CPUs which this
 752           kernel will support.  The maximum supported value is 32 and the
 753           minimum value which makes sense is 2.
 754
 755           This is purely to save memory - each supported CPU adds
 756           approximately eight kilobytes to the kernel image.
 757
 758 config HOTPLUG_CPU
 759         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 760         depends on SMP && HOTPLUG && EXPERIMENTAL
 761         help
 762           Say Y here to experiment with turning CPUs off and on.  CPUs
 763           can be controlled through /sys/devices/system/cpu.
 764
 765 source "kernel/Kconfig.preempt"
 766
 767 config GUSA
 768         def_bool y
 769         depends on !SMP && SUPERH32
 770         help
 771           This enables support for gUSA (general UserSpace Atomicity).
 772           This is the default implementation for both UP and non-ll/sc
 773           CPUs, and is used by the libc, amongst others.
 774
 775           For additional information, design information can be found
 776           in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
 777
 778           This should only be disabled for special cases where alternate
 779           atomicity implementations exist.
 780
 781 config GUSA_RB
 782         bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
 783         depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
 784         help
 785           Enabling this option will allow the kernel to implement some
 786           atomic operations using a software implementation of load-locked/
 787           store-conditional (LLSC). On machines which do not have hardware
 788           LLSC, this should be more efficient than the other alternative of
 789           disabling interrupts around the atomic sequence.
 790
 791 config HW_PERF_EVENTS
 792         bool "Enable hardware performance counter support for perf events"
 793         depends on PERF_EVENTS && CPU_HAS_PMU
 794         default y
 795         help
 796           Enable hardware performance counter support for perf events. If
 797           disabled, perf events will use software events only.
 798
 799 source "drivers/sh/Kconfig"
 800
 801 endmenu
 802
 803 menu "Boot options"
 804
 805 config ZERO_PAGE_OFFSET
 806         hex
 807         default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
 808                                 SH_7751_SOLUTION_ENGINE
 809         default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
 810         default "0x00002000" if PAGE_SIZE_8KB
 811         default "0x00001000"
 812         help
 813           This sets the default offset of zero page.
 814
 815 config BOOT_LINK_OFFSET
 816         hex
 817         default "0x00210000" if SH_SHMIN
 818         default "0x00400000" if SH_CAYMAN
 819         default "0x00810000" if SH_7780_SOLUTION_ENGINE
 820         default "0x009e0000" if SH_TITAN
 821         default "0x01800000" if SH_SDK7780
 822         default "0x02000000" if SH_EDOSK7760
 823         default "0x00800000"
 824         help
 825           This option allows you to set the link address offset of the zImage.
 826           This can be useful if you are on a board which has a small amount of
 827           memory.
 828
 829 config ENTRY_OFFSET
 830         hex
 831         default "0x00001000" if PAGE_SIZE_4KB
 832         default "0x00002000" if PAGE_SIZE_8KB
 833         default "0x00004000" if PAGE_SIZE_16KB
 834         default "0x00010000" if PAGE_SIZE_64KB
 835         default "0x00000000"
 836
 837 config ROMIMAGE_MMCIF
 838         bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
 839         depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
 840         help
 841           Say Y here to include experimental MMCIF loading code in
 842           romImage. With this enabled it is possible to write the romImage
 843           kernel image to an MMC card and boot the kernel straight from
 844           the reset vector. At reset the processor Mask ROM will load the
 845           first part of the romImage which in turn loads the rest the kernel
 846           image to RAM using the MMCIF hardware block.
 847
 848 choice
 849         prompt "Kernel command line"
 850         optional
 851         default CMDLINE_OVERWRITE
 852         help
 853           Setting this option allows the kernel command line arguments
 854           to be set.
 855
 856 config CMDLINE_OVERWRITE
 857         bool "Overwrite bootloader kernel arguments"
 858         help
 859           Given string will overwrite any arguments passed in by
 860           a bootloader.
 861
 862 config CMDLINE_EXTEND
 863         bool "Extend bootloader kernel arguments"
 864         help
 865           Given string will be concatenated with arguments passed in
 866           by a bootloader.
 867
 868 endchoice
 869
 870 config CMDLINE
 871         string "Kernel command line arguments string"
 872         depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
 873         default "console=ttySC1,115200"
 874
 875 endmenu
 876
 877 menu "Bus options"
 878
 879 config SUPERHYWAY
 880         tristate "SuperHyway Bus support"
 881         depends on CPU_SUBTYPE_SH4_202
 882
 883 config MAPLE
 884         bool "Maple Bus support"
 885         depends on SH_DREAMCAST
 886         help
 887          The Maple Bus is SEGA's serial communication bus for peripherals
 888          on the Dreamcast. Without this bus support you won't be able to
 889          get your Dreamcast keyboard etc to work, so most users
 890          probably want to say 'Y' here, unless you are only using the
 891          Dreamcast with a serial line terminal or a remote network
 892          connection.
 893
 894 config PCI
 895         bool "PCI support"
 896         depends on SYS_SUPPORTS_PCI
 897         select PCI_DOMAINS
 898         select GENERIC_PCI_IOMAP
 899         select NO_GENERIC_PCI_IOPORT_MAP
 900         help
 901           Find out whether you have a PCI motherboard. PCI is the name of a
 902           bus system, i.e. the way the CPU talks to the other stuff inside
 903           your box. If you have PCI, say Y, otherwise N.
 904
 905 config PCI_DOMAINS
 906         bool
 907
 908 source "drivers/pci/pcie/Kconfig"
 909
 910 source "drivers/pci/Kconfig"
 911
 912 source "drivers/pcmcia/Kconfig"
 913
 914 source "drivers/pci/hotplug/Kconfig"
 915
 916 endmenu
 917
 918 menu "Executable file formats"
 919
 920 source "fs/Kconfig.binfmt"
 921
 922 endmenu
 923
 924 menu "Power management options (EXPERIMENTAL)"
 925 depends on EXPERIMENTAL
 926
 927 source "kernel/power/Kconfig"
 928
 929 source "drivers/cpuidle/Kconfig"
 930
 931 endmenu
 932
 933 source "net/Kconfig"
 934
 935 source "drivers/Kconfig"
 936
 937 source "fs/Kconfig"
 938
 939 source "arch/sh/Kconfig.debug"
 940
 941 source "security/Kconfig"
 942
 943 source "crypto/Kconfig"
 944
 945 source "lib/Kconfig"