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         help
 371           Select SH7720 if you have a SH3-DSP SH7720 CPU.
 372
 373 config CPU_SUBTYPE_SH7721
 374         bool "Support SH7721 processor"
 375         select CPU_SH3
 376         select CPU_HAS_DSP
 377         select SYS_SUPPORTS_CMT
 378         select USB_ARCH_HAS_OHCI
 379         select USB_OHCI_SH if USB_OHCI_HCD
 380         help
 381           Select SH7721 if you have a SH3-DSP SH7721 CPU.
 382
 383 # SH-4 Processor Support
 384
 385 config CPU_SUBTYPE_SH7750
 386         bool "Support SH7750 processor"
 387         select CPU_SH4
 388         help
 389           Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
 390
 391 config CPU_SUBTYPE_SH7091
 392         bool "Support SH7091 processor"
 393         select CPU_SH4
 394         help
 395           Select SH7091 if you have an SH-4 based Sega device (such as
 396           the Dreamcast, Naomi, and Naomi 2).
 397
 398 config CPU_SUBTYPE_SH7750R
 399         bool "Support SH7750R processor"
 400         select CPU_SH4
 401
 402 config CPU_SUBTYPE_SH7750S
 403         bool "Support SH7750S processor"
 404         select CPU_SH4
 405
 406 config CPU_SUBTYPE_SH7751
 407         bool "Support SH7751 processor"
 408         select CPU_SH4
 409         help
 410           Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
 411           or if you have a HD6417751R CPU.
 412
 413 config CPU_SUBTYPE_SH7751R
 414         bool "Support SH7751R processor"
 415         select CPU_SH4
 416
 417 config CPU_SUBTYPE_SH7760
 418         bool "Support SH7760 processor"
 419         select CPU_SH4
 420
 421 config CPU_SUBTYPE_SH4_202
 422         bool "Support SH4-202 processor"
 423         select CPU_SH4
 424
 425 # SH-4A Processor Support
 426
 427 config CPU_SUBTYPE_SH7723
 428         bool "Support SH7723 processor"
 429         select CPU_SH4A
 430         select CPU_SHX2
 431         select ARCH_SHMOBILE
 432         select ARCH_SPARSEMEM_ENABLE
 433         select SYS_SUPPORTS_CMT
 434         select ARCH_WANT_OPTIONAL_GPIOLIB
 435         help
 436           Select SH7723 if you have an SH-MobileR2 CPU.
 437
 438 config CPU_SUBTYPE_SH7724
 439         bool "Support SH7724 processor"
 440         select CPU_SH4A
 441         select CPU_SHX2
 442         select ARCH_SHMOBILE
 443         select ARCH_SPARSEMEM_ENABLE
 444         select SYS_SUPPORTS_CMT
 445         select ARCH_WANT_OPTIONAL_GPIOLIB
 446         help
 447           Select SH7724 if you have an SH-MobileR2R CPU.
 448
 449 config CPU_SUBTYPE_SH7734
 450         bool "Support SH7734 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 SH7734 if you have a SH4A SH7734 CPU.
 458
 459 config CPU_SUBTYPE_SH7757
 460         bool "Support SH7757 processor"
 461         select CPU_SH4A
 462         select CPU_SHX2
 463         select ARCH_WANT_OPTIONAL_GPIOLIB
 464         select USB_ARCH_HAS_OHCI
 465         select USB_ARCH_HAS_EHCI
 466         help
 467           Select SH7757 if you have a SH4A SH7757 CPU.
 468
 469 config CPU_SUBTYPE_SH7763
 470         bool "Support SH7763 processor"
 471         select CPU_SH4A
 472         select USB_ARCH_HAS_OHCI
 473         select USB_OHCI_SH if USB_OHCI_HCD
 474         help
 475           Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
 476
 477 config CPU_SUBTYPE_SH7770
 478         bool "Support SH7770 processor"
 479         select CPU_SH4A
 480
 481 config CPU_SUBTYPE_SH7780
 482         bool "Support SH7780 processor"
 483         select CPU_SH4A
 484
 485 config CPU_SUBTYPE_SH7785
 486         bool "Support SH7785 processor"
 487         select CPU_SH4A
 488         select CPU_SHX2
 489         select ARCH_SPARSEMEM_ENABLE
 490         select SYS_SUPPORTS_NUMA
 491         select ARCH_WANT_OPTIONAL_GPIOLIB
 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
 505 config CPU_SUBTYPE_SHX3
 506         bool "Support SH-X3 processor"
 507         select CPU_SH4A
 508         select CPU_SHX3
 509         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 510         select ARCH_REQUIRE_GPIOLIB
 511
 512 # SH4AL-DSP Processor Support
 513
 514 config CPU_SUBTYPE_SH7343
 515         bool "Support SH7343 processor"
 516         select CPU_SH4AL_DSP
 517         select ARCH_SHMOBILE
 518         select SYS_SUPPORTS_CMT
 519
 520 config CPU_SUBTYPE_SH7722
 521         bool "Support SH7722 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         select ARCH_WANT_OPTIONAL_GPIOLIB
 529
 530 config CPU_SUBTYPE_SH7366
 531         bool "Support SH7366 processor"
 532         select CPU_SH4AL_DSP
 533         select CPU_SHX2
 534         select ARCH_SHMOBILE
 535         select ARCH_SPARSEMEM_ENABLE
 536         select SYS_SUPPORTS_NUMA
 537         select SYS_SUPPORTS_CMT
 538
 539 endchoice
 540
 541 endif
 542
 543 if SUPERH64
 544
 545 choice
 546         prompt "Processor sub-type selection"
 547
 548 # SH-5 Processor Support
 549
 550 config CPU_SUBTYPE_SH5_101
 551         bool "Support SH5-101 processor"
 552         select CPU_SH5
 553
 554 config CPU_SUBTYPE_SH5_103
 555         bool "Support SH5-103 processor"
 556         select CPU_SH5
 557
 558 endchoice
 559
 560 endif
 561
 562 source "arch/sh/mm/Kconfig"
 563
 564 source "arch/sh/Kconfig.cpu"
 565
 566 source "arch/sh/boards/Kconfig"
 567
 568 menu "Timer and clock configuration"
 569
 570 config SH_TIMER_TMU
 571         bool "TMU timer driver"
 572         depends on SYS_SUPPORTS_TMU
 573         default y
 574         help
 575           This enables the build of the TMU timer driver.
 576
 577 config SH_TIMER_CMT
 578         bool "CMT timer driver"
 579         depends on SYS_SUPPORTS_CMT
 580         default y
 581         help
 582           This enables build of the CMT timer driver.
 583
 584 config SH_TIMER_MTU2
 585         bool "MTU2 timer driver"
 586         depends on SYS_SUPPORTS_MTU2
 587         default y
 588         help
 589           This enables build of the MTU2 timer driver.
 590
 591 config SH_PCLK_FREQ
 592         int "Peripheral clock frequency (in Hz)"
 593         depends on SH_CLK_CPG_LEGACY
 594         default "31250000" if CPU_SUBTYPE_SH7619
 595         default "33333333" if CPU_SUBTYPE_SH7770 || \
 596                               CPU_SUBTYPE_SH7760 || \
 597                               CPU_SUBTYPE_SH7705 || \
 598                               CPU_SUBTYPE_SH7203 || \
 599                               CPU_SUBTYPE_SH7206 || \
 600                               CPU_SUBTYPE_SH7263 || \
 601                               CPU_SUBTYPE_MXG
 602         default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
 603         default "66000000" if CPU_SUBTYPE_SH4_202
 604         default "50000000"
 605         help
 606           This option is used to specify the peripheral clock frequency.
 607           This is necessary for determining the reference clock value on
 608           platforms lacking an RTC.
 609
 610 config SH_CLK_CPG
 611         def_bool y
 612
 613 config SH_CLK_CPG_LEGACY
 614         depends on SH_CLK_CPG
 615         def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
 616                       !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
 617                       !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
 618                       !CPU_SUBTYPE_SH7269
 619
 620 endmenu
 621
 622 menu "CPU Frequency scaling"
 623
 624 source "drivers/cpufreq/Kconfig"
 625
 626 config SH_CPU_FREQ
 627         tristate "SuperH CPU Frequency driver"
 628         depends on CPU_FREQ
 629         select CPU_FREQ_TABLE
 630         help
 631           This adds the cpufreq driver for SuperH. Any CPU that supports
 632           clock rate rounding through the clock framework can use this
 633           driver. While it will make the kernel slightly larger, this is
 634           harmless for CPUs that don't support rate rounding. The driver
 635           will also generate a notice in the boot log before disabling
 636           itself if the CPU in question is not capable of rate rounding.
 637
 638           For details, take a look at <file:Documentation/cpu-freq>.
 639
 640           If unsure, say N.
 641
 642 endmenu
 643
 644 source "arch/sh/drivers/Kconfig"
 645
 646 endmenu
 647
 648 menu "Kernel features"
 649
 650 source kernel/Kconfig.hz
 651
 652 config KEXEC
 653         bool "kexec system call (EXPERIMENTAL)"
 654         depends on SUPERH32 && EXPERIMENTAL && MMU
 655         help
 656           kexec is a system call that implements the ability to shutdown your
 657           current kernel, and to start another kernel.  It is like a reboot
 658           but it is independent of the system firmware.  And like a reboot
 659           you can start any kernel with it, not just Linux.
 660
 661           The name comes from the similarity to the exec system call.
 662
 663           It is an ongoing process to be certain the hardware in a machine
 664           is properly shutdown, so do not be surprised if this code does not
 665           initially work for you.  It may help to enable device hotplugging
 666           support.  As of this writing the exact hardware interface is
 667           strongly in flux, so no good recommendation can be made.
 668
 669 config CRASH_DUMP
 670         bool "kernel crash dumps (EXPERIMENTAL)"
 671         depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
 672         help
 673           Generate crash dump after being started by kexec.
 674           This should be normally only set in special crash dump kernels
 675           which are loaded in the main kernel with kexec-tools into
 676           a specially reserved region and then later executed after
 677           a crash by kdump/kexec. The crash dump kernel must be compiled
 678           to a memory address not used by the main kernel using
 679           PHYSICAL_START.
 680
 681           For more details see Documentation/kdump/kdump.txt
 682
 683 config KEXEC_JUMP
 684         bool "kexec jump (EXPERIMENTAL)"
 685         depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
 686         help
 687           Jump between original kernel and kexeced kernel and invoke
 688           code via KEXEC
 689
 690 config PHYSICAL_START
 691         hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
 692         default MEMORY_START
 693         ---help---
 694           This gives the physical address where the kernel is loaded
 695           and is ordinarily the same as MEMORY_START.
 696
 697           Different values are primarily used in the case of kexec on panic
 698           where the fail safe kernel needs to run at a different address
 699           than the panic-ed kernel.
 700
 701 config SECCOMP
 702         bool "Enable seccomp to safely compute untrusted bytecode"
 703         depends on PROC_FS
 704         help
 705           This kernel feature is useful for number crunching applications
 706           that may need to compute untrusted bytecode during their
 707           execution. By using pipes or other transports made available to
 708           the process as file descriptors supporting the read/write
 709           syscalls, it's possible to isolate those applications in
 710           their own address space using seccomp. Once seccomp is
 711           enabled via prctl, it cannot be disabled and the task is only
 712           allowed to execute a few safe syscalls defined by each seccomp
 713           mode.
 714
 715           If unsure, say N.
 716
 717 config CC_STACKPROTECTOR
 718         bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
 719         depends on SUPERH32 && EXPERIMENTAL
 720         help
 721           This option turns on the -fstack-protector GCC feature. This
 722           feature puts, at the beginning of functions, a canary value on
 723           the stack just before the return address, and validates
 724           the value just before actually returning.  Stack based buffer
 725           overflows (that need to overwrite this return address) now also
 726           overwrite the canary, which gets detected and the attack is then
 727           neutralized via a kernel panic.
 728
 729           This feature requires gcc version 4.2 or above.
 730
 731 config SMP
 732         bool "Symmetric multi-processing support"
 733         depends on SYS_SUPPORTS_SMP
 734         select USE_GENERIC_SMP_HELPERS
 735         ---help---
 736           This enables support for systems with more than one CPU. If you have
 737           a system with only one CPU, like most personal computers, say N. If
 738           you have a system with more than one CPU, say Y.
 739
 740           If you say N here, the kernel will run on single and multiprocessor
 741           machines, but will use only one CPU of a multiprocessor machine. If
 742           you say Y here, the kernel will run on many, but not all,
 743           singleprocessor machines. On a singleprocessor machine, the kernel
 744           will run faster if you say N here.
 745
 746           People using multiprocessor machines who say Y here should also say
 747           Y to "Enhanced Real Time Clock Support", below.
 748
 749           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 750           available at <http://www.tldp.org/docs.html#howto>.
 751
 752           If you don't know what to do here, say N.
 753
 754 config NR_CPUS
 755         int "Maximum number of CPUs (2-32)"
 756         range 2 32
 757         depends on SMP
 758         default "4" if CPU_SUBTYPE_SHX3
 759         default "2"
 760         help
 761           This allows you to specify the maximum number of CPUs which this
 762           kernel will support.  The maximum supported value is 32 and the
 763           minimum value which makes sense is 2.
 764
 765           This is purely to save memory - each supported CPU adds
 766           approximately eight kilobytes to the kernel image.
 767
 768 config HOTPLUG_CPU
 769         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 770         depends on SMP && HOTPLUG && EXPERIMENTAL
 771         help
 772           Say Y here to experiment with turning CPUs off and on.  CPUs
 773           can be controlled through /sys/devices/system/cpu.
 774
 775 source "kernel/Kconfig.preempt"
 776
 777 config GUSA
 778         def_bool y
 779         depends on !SMP && SUPERH32
 780         help
 781           This enables support for gUSA (general UserSpace Atomicity).
 782           This is the default implementation for both UP and non-ll/sc
 783           CPUs, and is used by the libc, amongst others.
 784
 785           For additional information, design information can be found
 786           in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
 787
 788           This should only be disabled for special cases where alternate
 789           atomicity implementations exist.
 790
 791 config GUSA_RB
 792         bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
 793         depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
 794         help
 795           Enabling this option will allow the kernel to implement some
 796           atomic operations using a software implementation of load-locked/
 797           store-conditional (LLSC). On machines which do not have hardware
 798           LLSC, this should be more efficient than the other alternative of
 799           disabling interrupts around the atomic sequence.
 800
 801 config HW_PERF_EVENTS
 802         bool "Enable hardware performance counter support for perf events"
 803         depends on PERF_EVENTS && CPU_HAS_PMU
 804         default y
 805         help
 806           Enable hardware performance counter support for perf events. If
 807           disabled, perf events will use software events only.
 808
 809 source "drivers/sh/Kconfig"
 810
 811 endmenu
 812
 813 menu "Boot options"
 814
 815 config ZERO_PAGE_OFFSET
 816         hex
 817         default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
 818                                 SH_7751_SOLUTION_ENGINE
 819         default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
 820         default "0x00002000" if PAGE_SIZE_8KB
 821         default "0x00001000"
 822         help
 823           This sets the default offset of zero page.
 824
 825 config BOOT_LINK_OFFSET
 826         hex
 827         default "0x00210000" if SH_SHMIN
 828         default "0x00400000" if SH_CAYMAN
 829         default "0x00810000" if SH_7780_SOLUTION_ENGINE
 830         default "0x009e0000" if SH_TITAN
 831         default "0x01800000" if SH_SDK7780
 832         default "0x02000000" if SH_EDOSK7760
 833         default "0x00800000"
 834         help
 835           This option allows you to set the link address offset of the zImage.
 836           This can be useful if you are on a board which has a small amount of
 837           memory.
 838
 839 config ENTRY_OFFSET
 840         hex
 841         default "0x00001000" if PAGE_SIZE_4KB
 842         default "0x00002000" if PAGE_SIZE_8KB
 843         default "0x00004000" if PAGE_SIZE_16KB
 844         default "0x00010000" if PAGE_SIZE_64KB
 845         default "0x00000000"
 846
 847 config ROMIMAGE_MMCIF
 848         bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
 849         depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
 850         help
 851           Say Y here to include experimental MMCIF loading code in
 852           romImage. With this enabled it is possible to write the romImage
 853           kernel image to an MMC card and boot the kernel straight from
 854           the reset vector. At reset the processor Mask ROM will load the
 855           first part of the romImage which in turn loads the rest the kernel
 856           image to RAM using the MMCIF hardware block.
 857
 858 choice
 859         prompt "Kernel command line"
 860         optional
 861         default CMDLINE_OVERWRITE
 862         help
 863           Setting this option allows the kernel command line arguments
 864           to be set.
 865
 866 config CMDLINE_OVERWRITE
 867         bool "Overwrite bootloader kernel arguments"
 868         help
 869           Given string will overwrite any arguments passed in by
 870           a bootloader.
 871
 872 config CMDLINE_EXTEND
 873         bool "Extend bootloader kernel arguments"
 874         help
 875           Given string will be concatenated with arguments passed in
 876           by a bootloader.
 877
 878 endchoice
 879
 880 config CMDLINE
 881         string "Kernel command line arguments string"
 882         depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
 883         default "console=ttySC1,115200"
 884
 885 endmenu
 886
 887 menu "Bus options"
 888
 889 config SUPERHYWAY
 890         tristate "SuperHyway Bus support"
 891         depends on CPU_SUBTYPE_SH4_202
 892
 893 config MAPLE
 894         bool "Maple Bus support"
 895         depends on SH_DREAMCAST
 896         help
 897          The Maple Bus is SEGA's serial communication bus for peripherals
 898          on the Dreamcast. Without this bus support you won't be able to
 899          get your Dreamcast keyboard etc to work, so most users
 900          probably want to say 'Y' here, unless you are only using the
 901          Dreamcast with a serial line terminal or a remote network
 902          connection.
 903
 904 config PCI
 905         bool "PCI support"
 906         depends on SYS_SUPPORTS_PCI
 907         select PCI_DOMAINS
 908         select GENERIC_PCI_IOMAP
 909         select NO_GENERIC_PCI_IOPORT_MAP
 910         help
 911           Find out whether you have a PCI motherboard. PCI is the name of a
 912           bus system, i.e. the way the CPU talks to the other stuff inside
 913           your box. If you have PCI, say Y, otherwise N.
 914
 915 config PCI_DOMAINS
 916         bool
 917
 918 source "drivers/pci/pcie/Kconfig"
 919
 920 source "drivers/pci/Kconfig"
 921
 922 source "drivers/pcmcia/Kconfig"
 923
 924 source "drivers/pci/hotplug/Kconfig"
 925
 926 endmenu
 927
 928 menu "Executable file formats"
 929
 930 source "fs/Kconfig.binfmt"
 931
 932 endmenu
 933
 934 menu "Power management options (EXPERIMENTAL)"
 935 depends on EXPERIMENTAL
 936
 937 source "kernel/power/Kconfig"
 938
 939 source "drivers/cpuidle/Kconfig"
 940
 941 endmenu
 942
 943 source "net/Kconfig"
 944
 945 source "drivers/Kconfig"
 946
 947 source "fs/Kconfig"
 948
 949 source "arch/sh/Kconfig.debug"
 950
 951 source "security/Kconfig"
 952
 953 source "crypto/Kconfig"
 954
 955 source "lib/Kconfig"