arch/sh/Kconfig

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