arch/sh/Kconfig

   1 config SUPERH
   2         def_bool y
   3         select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
   4         select ARCH_MIGHT_HAVE_PC_PARPORT
   5         select ARCH_NO_COHERENT_DMA_MMAP if !MMU
   6         select HAVE_PATA_PLATFORM
   7         select CLKDEV_LOOKUP
   8         select HAVE_IDE if HAS_IOPORT_MAP
   9         select HAVE_MEMBLOCK
  10         select HAVE_MEMBLOCK_NODE_MAP
  11         select ARCH_DISCARD_MEMBLOCK
  12         select HAVE_OPROFILE
  13         select HAVE_GENERIC_DMA_COHERENT
  14         select HAVE_ARCH_TRACEHOOK
  15         select HAVE_DMA_API_DEBUG
  16         select HAVE_PERF_EVENTS
  17         select HAVE_DEBUG_BUGVERBOSE
  18         select ARCH_HAVE_CUSTOM_GPIO_H
  19         select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
  20         select ARCH_HAS_GCOV_PROFILE_ALL
  21         select PERF_USE_VMALLOC
  22         select HAVE_DEBUG_KMEMLEAK
  23         select HAVE_KERNEL_GZIP
  24         select CPU_NO_EFFICIENT_FFS
  25         select HAVE_KERNEL_BZIP2
  26         select HAVE_KERNEL_LZMA
  27         select HAVE_KERNEL_XZ
  28         select HAVE_KERNEL_LZO
  29         select HAVE_UID16
  30         select ARCH_WANT_IPC_PARSE_VERSION
  31         select HAVE_SYSCALL_TRACEPOINTS
  32         select HAVE_REGS_AND_STACK_ACCESS_API
  33         select MAY_HAVE_SPARSE_IRQ
  34         select IRQ_FORCED_THREADING
  35         select RTC_LIB
  36         select GENERIC_ATOMIC64
  37         select GENERIC_IRQ_SHOW
  38         select GENERIC_SMP_IDLE_THREAD
  39         select GENERIC_IDLE_POLL_SETUP
  40         select GENERIC_CLOCKEVENTS
  41         select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
  42         select GENERIC_SCHED_CLOCK
  43         select GENERIC_STRNCPY_FROM_USER
  44         select GENERIC_STRNLEN_USER
  45         select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
  46         select MODULES_USE_ELF_RELA
  47         select OLD_SIGSUSPEND
  48         select OLD_SIGACTION
  49         select HAVE_ARCH_AUDITSYSCALL
  50         select HAVE_FUTEX_CMPXCHG if FUTEX
  51         select HAVE_NMI
  52         help
  53           The SuperH is a RISC processor targeted for use in embedded systems
  54           and consumer electronics; it was also used in the Sega Dreamcast
  55           gaming console.  The SuperH port has a home page at
  56           <http://www.linux-sh.org/>.
  57
  58 config SUPERH32
  59         def_bool ARCH = "sh"
  60         select HAVE_KPROBES
  61         select HAVE_KRETPROBES
  62         select HAVE_IOREMAP_PROT if MMU && !X2TLB
  63         select HAVE_FUNCTION_TRACER
  64         select HAVE_FTRACE_MCOUNT_RECORD
  65         select HAVE_DYNAMIC_FTRACE
  66         select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
  67         select ARCH_WANT_IPC_PARSE_VERSION
  68         select HAVE_FUNCTION_GRAPH_TRACER
  69         select HAVE_ARCH_KGDB
  70         select HAVE_HW_BREAKPOINT
  71         select HAVE_MIXED_BREAKPOINTS_REGS
  72         select PERF_EVENTS
  73         select ARCH_HIBERNATION_POSSIBLE if MMU
  74         select SPARSE_IRQ
  75         select HAVE_CC_STACKPROTECTOR
  76
  77 config SUPERH64
  78         def_bool ARCH = "sh64"
  79         select HAVE_EXIT_THREAD
  80         select KALLSYMS
  81
  82 config ARCH_DEFCONFIG
  83         string
  84         default "arch/sh/configs/shx3_defconfig" if SUPERH32
  85         default "arch/sh/configs/cayman_defconfig" if SUPERH64
  86
  87 config RWSEM_GENERIC_SPINLOCK
  88         def_bool y
  89
  90 config RWSEM_XCHGADD_ALGORITHM
  91         bool
  92
  93 config GENERIC_BUG
  94         def_bool y
  95         depends on BUG && SUPERH32
  96
  97 config GENERIC_CSUM
  98         def_bool y
  99         depends on SUPERH64
 100
 101 config GENERIC_HWEIGHT
 102         def_bool y
 103
 104 config GENERIC_CALIBRATE_DELAY
 105         bool
 106
 107 config GENERIC_LOCKBREAK
 108         def_bool y
 109         depends on SMP && PREEMPT
 110
 111 config ARCH_SUSPEND_POSSIBLE
 112         def_bool n
 113
 114 config ARCH_HIBERNATION_POSSIBLE
 115         def_bool n
 116
 117 config SYS_SUPPORTS_APM_EMULATION
 118         bool
 119         select ARCH_SUSPEND_POSSIBLE
 120
 121 config SYS_SUPPORTS_HUGETLBFS
 122         bool
 123
 124 config SYS_SUPPORTS_SMP
 125         bool
 126
 127 config SYS_SUPPORTS_NUMA
 128         bool
 129
 130 config SYS_SUPPORTS_PCI
 131         bool
 132
 133 config STACKTRACE_SUPPORT
 134         def_bool y
 135
 136 config LOCKDEP_SUPPORT
 137         def_bool y
 138
 139 config ARCH_HAS_ILOG2_U32
 140         def_bool n
 141
 142 config ARCH_HAS_ILOG2_U64
 143         def_bool n
 144
 145 config NO_IOPORT_MAP
 146         def_bool !PCI
 147         depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
 148                    !SH_HP6XX && !SH_SOLUTION_ENGINE
 149
 150 config IO_TRAPPED
 151         bool
 152
 153 config SWAP_IO_SPACE
 154         bool
 155
 156 config DMA_COHERENT
 157         bool
 158
 159 config DMA_NONCOHERENT
 160         def_bool !DMA_COHERENT
 161
 162 config NEED_DMA_MAP_STATE
 163         def_bool DMA_NONCOHERENT
 164
 165 config NEED_SG_DMA_LENGTH
 166         def_bool y
 167
 168 config PGTABLE_LEVELS
 169         default 3 if X2TLB
 170         default 2
 171
 172 source "init/Kconfig"
 173
 174 source "kernel/Kconfig.freezer"
 175
 176 menu "System type"
 177
 178 #
 179 # Processor families
 180 #
 181 config CPU_SH2
 182         bool
 183         select SH_INTC
 184
 185 config CPU_SH2A
 186         bool
 187         select CPU_SH2
 188         select UNCACHED_MAPPING
 189
 190 config CPU_J2
 191         bool
 192         select CPU_SH2
 193         select OF
 194         select OF_EARLY_FLATTREE
 195
 196 config CPU_SH3
 197         bool
 198         select CPU_HAS_INTEVT
 199         select CPU_HAS_SR_RB
 200         select SH_INTC
 201         select SYS_SUPPORTS_SH_TMU
 202
 203 config CPU_SH4
 204         bool
 205         select CPU_HAS_INTEVT
 206         select CPU_HAS_SR_RB
 207         select CPU_HAS_FPU if !CPU_SH4AL_DSP
 208         select SH_INTC
 209         select SYS_SUPPORTS_SH_TMU
 210         select SYS_SUPPORTS_HUGETLBFS if MMU
 211
 212 config CPU_SH4A
 213         bool
 214         select CPU_SH4
 215
 216 config CPU_SH4AL_DSP
 217         bool
 218         select CPU_SH4A
 219         select CPU_HAS_DSP
 220
 221 config CPU_SH5
 222         bool
 223         select CPU_HAS_FPU
 224         select SYS_SUPPORTS_SH_TMU
 225         select SYS_SUPPORTS_HUGETLBFS if MMU
 226
 227 config CPU_SHX2
 228         bool
 229
 230 config CPU_SHX3
 231         bool
 232         select DMA_COHERENT
 233         select SYS_SUPPORTS_SMP
 234         select SYS_SUPPORTS_NUMA
 235
 236 config ARCH_SHMOBILE
 237         bool
 238         select ARCH_SUSPEND_POSSIBLE
 239         select PM
 240
 241 config CPU_HAS_PMU
 242        depends on CPU_SH4 || CPU_SH4A
 243        default y
 244        bool
 245
 246 if SUPERH32
 247
 248 choice
 249         prompt "Processor sub-type selection"
 250
 251 #
 252 # Processor subtypes
 253 #
 254
 255 # SH-2 Processor Support
 256
 257 config CPU_SUBTYPE_SH7619
 258         bool "Support SH7619 processor"
 259         select CPU_SH2
 260         select SYS_SUPPORTS_SH_CMT
 261
 262 config CPU_SUBTYPE_J2
 263         bool "Support J2 processor"
 264         select CPU_J2
 265         select SYS_SUPPORTS_SMP
 266         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 267
 268 # SH-2A Processor Support
 269
 270 config CPU_SUBTYPE_SH7201
 271         bool "Support SH7201 processor"
 272         select CPU_SH2A
 273         select CPU_HAS_FPU
 274         select SYS_SUPPORTS_SH_MTU2
 275
 276 config CPU_SUBTYPE_SH7203
 277         bool "Support SH7203 processor"
 278         select CPU_SH2A
 279         select CPU_HAS_FPU
 280         select SYS_SUPPORTS_SH_CMT
 281         select SYS_SUPPORTS_SH_MTU2
 282         select PINCTRL
 283
 284 config CPU_SUBTYPE_SH7206
 285         bool "Support SH7206 processor"
 286         select CPU_SH2A
 287         select SYS_SUPPORTS_SH_CMT
 288         select SYS_SUPPORTS_SH_MTU2
 289
 290 config CPU_SUBTYPE_SH7263
 291         bool "Support SH7263 processor"
 292         select CPU_SH2A
 293         select CPU_HAS_FPU
 294         select SYS_SUPPORTS_SH_CMT
 295         select SYS_SUPPORTS_SH_MTU2
 296
 297 config CPU_SUBTYPE_SH7264
 298         bool "Support SH7264 processor"
 299         select CPU_SH2A
 300         select CPU_HAS_FPU
 301         select SYS_SUPPORTS_SH_CMT
 302         select SYS_SUPPORTS_SH_MTU2
 303         select PINCTRL
 304
 305 config CPU_SUBTYPE_SH7269
 306         bool "Support SH7269 processor"
 307         select CPU_SH2A
 308         select CPU_HAS_FPU
 309         select SYS_SUPPORTS_SH_CMT
 310         select SYS_SUPPORTS_SH_MTU2
 311         select PINCTRL
 312
 313 config CPU_SUBTYPE_MXG
 314         bool "Support MX-G processor"
 315         select CPU_SH2A
 316         select SYS_SUPPORTS_SH_MTU2
 317         help
 318           Select MX-G if running on an R8A03022BG part.
 319
 320 # SH-3 Processor Support
 321
 322 config CPU_SUBTYPE_SH7705
 323         bool "Support SH7705 processor"
 324         select CPU_SH3
 325
 326 config CPU_SUBTYPE_SH7706
 327         bool "Support SH7706 processor"
 328         select CPU_SH3
 329         help
 330           Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
 331
 332 config CPU_SUBTYPE_SH7707
 333         bool "Support SH7707 processor"
 334         select CPU_SH3
 335         help
 336           Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
 337
 338 config CPU_SUBTYPE_SH7708
 339         bool "Support SH7708 processor"
 340         select CPU_SH3
 341         help
 342           Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
 343           if you have a 100 Mhz SH-3 HD6417708R CPU.
 344
 345 config CPU_SUBTYPE_SH7709
 346         bool "Support SH7709 processor"
 347         select CPU_SH3
 348         help
 349           Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
 350
 351 config CPU_SUBTYPE_SH7710
 352         bool "Support SH7710 processor"
 353         select CPU_SH3
 354         select CPU_HAS_DSP
 355         help
 356           Select SH7710 if you have a SH3-DSP SH7710 CPU.
 357
 358 config CPU_SUBTYPE_SH7712
 359         bool "Support SH7712 processor"
 360         select CPU_SH3
 361         select CPU_HAS_DSP
 362         help
 363           Select SH7712 if you have a SH3-DSP SH7712 CPU.
 364
 365 config CPU_SUBTYPE_SH7720
 366         bool "Support SH7720 processor"
 367         select CPU_SH3
 368         select CPU_HAS_DSP
 369         select SYS_SUPPORTS_SH_CMT
 370         select USB_OHCI_SH if USB_OHCI_HCD
 371         select PINCTRL
 372         help
 373           Select SH7720 if you have a SH3-DSP SH7720 CPU.
 374
 375 config CPU_SUBTYPE_SH7721
 376         bool "Support SH7721 processor"
 377         select CPU_SH3
 378         select CPU_HAS_DSP
 379         select SYS_SUPPORTS_SH_CMT
 380         select USB_OHCI_SH if USB_OHCI_HCD
 381         help
 382           Select SH7721 if you have a SH3-DSP SH7721 CPU.
 383
 384 # SH-4 Processor Support
 385
 386 config CPU_SUBTYPE_SH7750
 387         bool "Support SH7750 processor"
 388         select CPU_SH4
 389         help
 390           Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
 391
 392 config CPU_SUBTYPE_SH7091
 393         bool "Support SH7091 processor"
 394         select CPU_SH4
 395         help
 396           Select SH7091 if you have an SH-4 based Sega device (such as
 397           the Dreamcast, Naomi, and Naomi 2).
 398
 399 config CPU_SUBTYPE_SH7750R
 400         bool "Support SH7750R processor"
 401         select CPU_SH4
 402
 403 config CPU_SUBTYPE_SH7750S
 404         bool "Support SH7750S processor"
 405         select CPU_SH4
 406
 407 config CPU_SUBTYPE_SH7751
 408         bool "Support SH7751 processor"
 409         select CPU_SH4
 410         help
 411           Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
 412           or if you have a HD6417751R CPU.
 413
 414 config CPU_SUBTYPE_SH7751R
 415         bool "Support SH7751R processor"
 416         select CPU_SH4
 417
 418 config CPU_SUBTYPE_SH7760
 419         bool "Support SH7760 processor"
 420         select CPU_SH4
 421
 422 config CPU_SUBTYPE_SH4_202
 423         bool "Support SH4-202 processor"
 424         select CPU_SH4
 425
 426 # SH-4A Processor Support
 427
 428 config CPU_SUBTYPE_SH7723
 429         bool "Support SH7723 processor"
 430         select CPU_SH4A
 431         select CPU_SHX2
 432         select ARCH_SHMOBILE
 433         select ARCH_SPARSEMEM_ENABLE
 434         select SYS_SUPPORTS_SH_CMT
 435         select PINCTRL
 436         help
 437           Select SH7723 if you have an SH-MobileR2 CPU.
 438
 439 config CPU_SUBTYPE_SH7724
 440         bool "Support SH7724 processor"
 441         select CPU_SH4A
 442         select CPU_SHX2
 443         select ARCH_SHMOBILE
 444         select ARCH_SPARSEMEM_ENABLE
 445         select SYS_SUPPORTS_SH_CMT
 446         select PINCTRL
 447         help
 448           Select SH7724 if you have an SH-MobileR2R CPU.
 449
 450 config CPU_SUBTYPE_SH7734
 451         bool "Support SH7734 processor"
 452         select CPU_SH4A
 453         select CPU_SHX2
 454         select PINCTRL
 455         help
 456           Select SH7734 if you have a SH4A SH7734 CPU.
 457
 458 config CPU_SUBTYPE_SH7757
 459         bool "Support SH7757 processor"
 460         select CPU_SH4A
 461         select CPU_SHX2
 462         select PINCTRL
 463         help
 464           Select SH7757 if you have a SH4A SH7757 CPU.
 465
 466 config CPU_SUBTYPE_SH7763
 467         bool "Support SH7763 processor"
 468         select CPU_SH4A
 469         select USB_OHCI_SH if USB_OHCI_HCD
 470         help
 471           Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
 472
 473 config CPU_SUBTYPE_SH7770
 474         bool "Support SH7770 processor"
 475         select CPU_SH4A
 476
 477 config CPU_SUBTYPE_SH7780
 478         bool "Support SH7780 processor"
 479         select CPU_SH4A
 480
 481 config CPU_SUBTYPE_SH7785
 482         bool "Support SH7785 processor"
 483         select CPU_SH4A
 484         select CPU_SHX2
 485         select ARCH_SPARSEMEM_ENABLE
 486         select SYS_SUPPORTS_NUMA
 487         select PINCTRL
 488
 489 config CPU_SUBTYPE_SH7786
 490         bool "Support SH7786 processor"
 491         select CPU_SH4A
 492         select CPU_SHX3
 493         select CPU_HAS_PTEAEX
 494         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 495         select USB_OHCI_SH if USB_OHCI_HCD
 496         select USB_EHCI_SH if USB_EHCI_HCD
 497         select PINCTRL
 498
 499 config CPU_SUBTYPE_SHX3
 500         bool "Support SH-X3 processor"
 501         select CPU_SH4A
 502         select CPU_SHX3
 503         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 504         select GPIOLIB
 505         select PINCTRL
 506
 507 # SH4AL-DSP Processor Support
 508
 509 config CPU_SUBTYPE_SH7343
 510         bool "Support SH7343 processor"
 511         select CPU_SH4AL_DSP
 512         select ARCH_SHMOBILE
 513         select SYS_SUPPORTS_SH_CMT
 514
 515 config CPU_SUBTYPE_SH7722
 516         bool "Support SH7722 processor"
 517         select CPU_SH4AL_DSP
 518         select CPU_SHX2
 519         select ARCH_SHMOBILE
 520         select ARCH_SPARSEMEM_ENABLE
 521         select SYS_SUPPORTS_NUMA
 522         select SYS_SUPPORTS_SH_CMT
 523         select PINCTRL
 524
 525 config CPU_SUBTYPE_SH7366
 526         bool "Support SH7366 processor"
 527         select CPU_SH4AL_DSP
 528         select CPU_SHX2
 529         select ARCH_SHMOBILE
 530         select ARCH_SPARSEMEM_ENABLE
 531         select SYS_SUPPORTS_NUMA
 532         select SYS_SUPPORTS_SH_CMT
 533
 534 endchoice
 535
 536 endif
 537
 538 if SUPERH64
 539
 540 choice
 541         prompt "Processor sub-type selection"
 542
 543 # SH-5 Processor Support
 544
 545 config CPU_SUBTYPE_SH5_101
 546         bool "Support SH5-101 processor"
 547         select CPU_SH5
 548
 549 config CPU_SUBTYPE_SH5_103
 550         bool "Support SH5-103 processor"
 551         select CPU_SH5
 552
 553 endchoice
 554
 555 endif
 556
 557 source "arch/sh/mm/Kconfig"
 558
 559 source "arch/sh/Kconfig.cpu"
 560
 561 source "arch/sh/boards/Kconfig"
 562
 563 menu "Timer and clock configuration"
 564
 565 config SH_PCLK_FREQ
 566         int "Peripheral clock frequency (in Hz)"
 567         depends on SH_CLK_CPG_LEGACY
 568         default "31250000" if CPU_SUBTYPE_SH7619
 569         default "33333333" if CPU_SUBTYPE_SH7770 || \
 570                               CPU_SUBTYPE_SH7760 || \
 571                               CPU_SUBTYPE_SH7705 || \
 572                               CPU_SUBTYPE_SH7203 || \
 573                               CPU_SUBTYPE_SH7206 || \
 574                               CPU_SUBTYPE_SH7263 || \
 575                               CPU_SUBTYPE_MXG
 576         default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
 577         default "66000000" if CPU_SUBTYPE_SH4_202
 578         default "50000000"
 579         help
 580           This option is used to specify the peripheral clock frequency.
 581           This is necessary for determining the reference clock value on
 582           platforms lacking an RTC.
 583
 584 config SH_CLK_CPG
 585         def_bool y
 586
 587 config SH_CLK_CPG_LEGACY
 588         depends on SH_CLK_CPG
 589         def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
 590                       !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
 591                       !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
 592                       !CPU_SUBTYPE_SH7269
 593
 594 endmenu
 595
 596 menu "CPU Frequency scaling"
 597 source "drivers/cpufreq/Kconfig"
 598 endmenu
 599
 600 source "arch/sh/drivers/Kconfig"
 601
 602 endmenu
 603
 604 menu "Kernel features"
 605
 606 source kernel/Kconfig.hz
 607
 608 config KEXEC
 609         bool "kexec system call (EXPERIMENTAL)"
 610         depends on SUPERH32 && MMU
 611         select KEXEC_CORE
 612         help
 613           kexec is a system call that implements the ability to shutdown your
 614           current kernel, and to start another kernel.  It is like a reboot
 615           but it is independent of the system firmware.  And like a reboot
 616           you can start any kernel with it, not just Linux.
 617
 618           The name comes from the similarity to the exec system call.
 619
 620           It is an ongoing process to be certain the hardware in a machine
 621           is properly shutdown, so do not be surprised if this code does not
 622           initially work for you.  As of this writing the exact hardware
 623           interface is strongly in flux, so no good recommendation can be
 624           made.
 625
 626 config CRASH_DUMP
 627         bool "kernel crash dumps (EXPERIMENTAL)"
 628         depends on SUPERH32 && BROKEN_ON_SMP
 629         help
 630           Generate crash dump after being started by kexec.
 631           This should be normally only set in special crash dump kernels
 632           which are loaded in the main kernel with kexec-tools into
 633           a specially reserved region and then later executed after
 634           a crash by kdump/kexec. The crash dump kernel must be compiled
 635           to a memory address not used by the main kernel using
 636           PHYSICAL_START.
 637
 638           For more details see Documentation/kdump/kdump.txt
 639
 640 config KEXEC_JUMP
 641         bool "kexec jump (EXPERIMENTAL)"
 642         depends on SUPERH32 && KEXEC && HIBERNATION
 643         help
 644           Jump between original kernel and kexeced kernel and invoke
 645           code via KEXEC
 646
 647 config PHYSICAL_START
 648         hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
 649         default MEMORY_START
 650         ---help---
 651           This gives the physical address where the kernel is loaded
 652           and is ordinarily the same as MEMORY_START.
 653
 654           Different values are primarily used in the case of kexec on panic
 655           where the fail safe kernel needs to run at a different address
 656           than the panic-ed kernel.
 657
 658 config SECCOMP
 659         bool "Enable seccomp to safely compute untrusted bytecode"
 660         depends on PROC_FS
 661         help
 662           This kernel feature is useful for number crunching applications
 663           that may need to compute untrusted bytecode during their
 664           execution. By using pipes or other transports made available to
 665           the process as file descriptors supporting the read/write
 666           syscalls, it's possible to isolate those applications in
 667           their own address space using seccomp. Once seccomp is
 668           enabled via prctl, it cannot be disabled and the task is only
 669           allowed to execute a few safe syscalls defined by each seccomp
 670           mode.
 671
 672           If unsure, say N.
 673
 674 config SMP
 675         bool "Symmetric multi-processing support"
 676         depends on SYS_SUPPORTS_SMP
 677         ---help---
 678           This enables support for systems with more than one CPU. If you have
 679           a system with only one CPU, say N. If you have a system with more
 680           than one CPU, say Y.
 681
 682           If you say N here, the kernel will run on uni- and multiprocessor
 683           machines, but will use only one CPU of a multiprocessor machine. If
 684           you say Y here, the kernel will run on many, but not all,
 685           uniprocessor machines. On a uniprocessor machine, the kernel
 686           will run faster if you say N here.
 687
 688           People using multiprocessor machines who say Y here should also say
 689           Y to "Enhanced Real Time Clock Support", below.
 690
 691           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 692           available at <http://www.tldp.org/docs.html#howto>.
 693
 694           If you don't know what to do here, say N.
 695
 696 config NR_CPUS
 697         int "Maximum number of CPUs (2-32)"
 698         range 2 32
 699         depends on SMP
 700         default "4" if CPU_SUBTYPE_SHX3
 701         default "2"
 702         help
 703           This allows you to specify the maximum number of CPUs which this
 704           kernel will support.  The maximum supported value is 32 and the
 705           minimum value which makes sense is 2.
 706
 707           This is purely to save memory - each supported CPU adds
 708           approximately eight kilobytes to the kernel image.
 709
 710 config HOTPLUG_CPU
 711         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 712         depends on SMP
 713         help
 714           Say Y here to experiment with turning CPUs off and on.  CPUs
 715           can be controlled through /sys/devices/system/cpu.
 716
 717 source "kernel/Kconfig.preempt"
 718
 719 config GUSA
 720         def_bool y
 721         depends on !SMP && SUPERH32
 722         help
 723           This enables support for gUSA (general UserSpace Atomicity).
 724           This is the default implementation for both UP and non-ll/sc
 725           CPUs, and is used by the libc, amongst others.
 726
 727           For additional information, design information can be found
 728           in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
 729
 730           This should only be disabled for special cases where alternate
 731           atomicity implementations exist.
 732
 733 config GUSA_RB
 734         bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
 735         depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
 736         help
 737           Enabling this option will allow the kernel to implement some
 738           atomic operations using a software implementation of load-locked/
 739           store-conditional (LLSC). On machines which do not have hardware
 740           LLSC, this should be more efficient than the other alternative of
 741           disabling interrupts around the atomic sequence.
 742
 743 config HW_PERF_EVENTS
 744         bool "Enable hardware performance counter support for perf events"
 745         depends on PERF_EVENTS && CPU_HAS_PMU
 746         default y
 747         help
 748           Enable hardware performance counter support for perf events. If
 749           disabled, perf events will use software events only.
 750
 751 source "drivers/sh/Kconfig"
 752
 753 endmenu
 754
 755 menu "Boot options"
 756
 757 config USE_BUILTIN_DTB
 758         bool "Use builtin DTB"
 759         default n
 760         depends on SH_DEVICE_TREE
 761         help
 762           Link a device tree blob for particular hardware into the kernel,
 763           suppressing use of the DTB pointer provided by the bootloader.
 764           This option should only be used with legacy bootloaders that are
 765           not capable of providing a DTB to the kernel, or for experimental
 766           hardware without stable device tree bindings.
 767
 768 config BUILTIN_DTB_SOURCE
 769         string "Source file for builtin DTB"
 770         default ""
 771         depends on USE_BUILTIN_DTB
 772         help
 773           Base name (without suffix, relative to arch/sh/boot/dts) for the
 774           a DTS file that will be used to produce the DTB linked into the
 775           kernel.
 776
 777 config ZERO_PAGE_OFFSET
 778         hex
 779         default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
 780                                 SH_7751_SOLUTION_ENGINE
 781         default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
 782         default "0x00002000" if PAGE_SIZE_8KB
 783         default "0x00001000"
 784         help
 785           This sets the default offset of zero page.
 786
 787 config BOOT_LINK_OFFSET
 788         hex
 789         default "0x00210000" if SH_SHMIN
 790         default "0x00400000" if SH_CAYMAN
 791         default "0x00810000" if SH_7780_SOLUTION_ENGINE
 792         default "0x009e0000" if SH_TITAN
 793         default "0x01800000" if SH_SDK7780
 794         default "0x02000000" if SH_EDOSK7760
 795         default "0x00800000"
 796         help
 797           This option allows you to set the link address offset of the zImage.
 798           This can be useful if you are on a board which has a small amount of
 799           memory.
 800
 801 config ENTRY_OFFSET
 802         hex
 803         default "0x00001000" if PAGE_SIZE_4KB
 804         default "0x00002000" if PAGE_SIZE_8KB
 805         default "0x00004000" if PAGE_SIZE_16KB
 806         default "0x00010000" if PAGE_SIZE_64KB
 807         default "0x00000000"
 808
 809 config ROMIMAGE_MMCIF
 810         bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
 811         depends on CPU_SUBTYPE_SH7724
 812         help
 813           Say Y here to include experimental MMCIF loading code in
 814           romImage. With this enabled it is possible to write the romImage
 815           kernel image to an MMC card and boot the kernel straight from
 816           the reset vector. At reset the processor Mask ROM will load the
 817           first part of the romImage which in turn loads the rest the kernel
 818           image to RAM using the MMCIF hardware block.
 819
 820 choice
 821         prompt "Kernel command line"
 822         optional
 823         default CMDLINE_OVERWRITE
 824         help
 825           Setting this option allows the kernel command line arguments
 826           to be set.
 827
 828 config CMDLINE_OVERWRITE
 829         bool "Overwrite bootloader kernel arguments"
 830         help
 831           Given string will overwrite any arguments passed in by
 832           a bootloader.
 833
 834 config CMDLINE_EXTEND
 835         bool "Extend bootloader kernel arguments"
 836         help
 837           Given string will be concatenated with arguments passed in
 838           by a bootloader.
 839
 840 endchoice
 841
 842 config CMDLINE
 843         string "Kernel command line arguments string"
 844         depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
 845         default "console=ttySC1,115200"
 846
 847 endmenu
 848
 849 menu "Bus options"
 850
 851 config SUPERHYWAY
 852         tristate "SuperHyway Bus support"
 853         depends on CPU_SUBTYPE_SH4_202
 854
 855 config MAPLE
 856         bool "Maple Bus support"
 857         depends on SH_DREAMCAST
 858         help
 859          The Maple Bus is SEGA's serial communication bus for peripherals
 860          on the Dreamcast. Without this bus support you won't be able to
 861          get your Dreamcast keyboard etc to work, so most users
 862          probably want to say 'Y' here, unless you are only using the
 863          Dreamcast with a serial line terminal or a remote network
 864          connection.
 865
 866 config PCI
 867         bool "PCI support"
 868         depends on SYS_SUPPORTS_PCI
 869         select PCI_DOMAINS
 870         select GENERIC_PCI_IOMAP
 871         select NO_GENERIC_PCI_IOPORT_MAP
 872         help
 873           Find out whether you have a PCI motherboard. PCI is the name of a
 874           bus system, i.e. the way the CPU talks to the other stuff inside
 875           your box. If you have PCI, say Y, otherwise N.
 876
 877 config PCI_DOMAINS
 878         bool
 879
 880 source "drivers/pci/Kconfig"
 881
 882 source "drivers/pcmcia/Kconfig"
 883
 884 endmenu
 885
 886 menu "Executable file formats"
 887
 888 source "fs/Kconfig.binfmt"
 889
 890 endmenu
 891
 892 menu "Power management options (EXPERIMENTAL)"
 893
 894 source "kernel/power/Kconfig"
 895
 896 source "drivers/cpuidle/Kconfig"
 897
 898 endmenu
 899
 900 source "net/Kconfig"
 901
 902 source "drivers/Kconfig"
 903
 904 source "fs/Kconfig"
 905
 906 source "arch/sh/Kconfig.debug"
 907
 908 source "security/Kconfig"
 909
 910 source "crypto/Kconfig"
 911
 912 source "lib/Kconfig"