arch/sh/Kconfig

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see Documentation/kbuild/kconfig-language.txt.
   4 #
   5
   6 mainmenu "Linux/SuperH Kernel Configuration"
   7
   8 config SUPERH
   9         def_bool y
  10         select EMBEDDED
  11         select HAVE_CLK
  12         select HAVE_IDE
  13         select HAVE_LMB
  14         select HAVE_OPROFILE
  15         select HAVE_GENERIC_DMA_COHERENT
  16         select HAVE_ARCH_TRACEHOOK
  17         select HAVE_DMA_API_DEBUG
  18         select HAVE_DMA_ATTRS
  19         select HAVE_PERF_EVENTS
  20         select PERF_USE_VMALLOC
  21         select HAVE_KERNEL_GZIP
  22         select HAVE_KERNEL_BZIP2
  23         select HAVE_KERNEL_LZMA
  24         select HAVE_KERNEL_LZO
  25         select HAVE_SYSCALL_TRACEPOINTS
  26         select RTC_LIB
  27         select GENERIC_ATOMIC64
  28         help
  29           The SuperH is a RISC processor targeted for use in embedded systems
  30           and consumer electronics; it was also used in the Sega Dreamcast
  31           gaming console.  The SuperH port has a home page at
  32           <http://www.linux-sh.org/>.
  33
  34 config SUPERH32
  35         def_bool ARCH = "sh"
  36         select HAVE_KPROBES
  37         select HAVE_KRETPROBES
  38         select HAVE_IOREMAP_PROT if MMU && !X2TLB
  39         select HAVE_FUNCTION_TRACER
  40         select HAVE_FTRACE_MCOUNT_RECORD
  41         select HAVE_DYNAMIC_FTRACE
  42         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  43         select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
  44         select HAVE_FUNCTION_GRAPH_TRACER
  45         select HAVE_ARCH_KGDB
  46         select HAVE_HW_BREAKPOINT
  47         select HAVE_MIXED_BREAKPOINTS_REGS
  48         select PERF_EVENTS if HAVE_HW_BREAKPOINT
  49         select ARCH_HIBERNATION_POSSIBLE if MMU
  50
  51 config SUPERH64
  52         def_bool ARCH = "sh64"
  53
  54 config ARCH_DEFCONFIG
  55         string
  56         default "arch/sh/configs/shx3_defconfig" if SUPERH32
  57         default "arch/sh/configs/cayman_defconfig" if SUPERH64
  58
  59 config RWSEM_GENERIC_SPINLOCK
  60         def_bool y
  61
  62 config RWSEM_XCHGADD_ALGORITHM
  63         bool
  64
  65 config GENERIC_BUG
  66         def_bool y
  67         depends on BUG && SUPERH32
  68
  69 config GENERIC_CSUM
  70         def_bool y
  71         depends on SUPERH64
  72
  73 config GENERIC_FIND_NEXT_BIT
  74         def_bool y
  75
  76 config GENERIC_HWEIGHT
  77         def_bool y
  78
  79 config GENERIC_HARDIRQS
  80         def_bool y
  81
  82 config GENERIC_HARDIRQS_NO__DO_IRQ
  83         def_bool y
  84
  85 config IRQ_PER_CPU
  86         def_bool y
  87
  88 config SPARSE_IRQ
  89         def_bool y
  90         depends on SUPERH32
  91
  92 config GENERIC_GPIO
  93         def_bool n
  94
  95 config GENERIC_CALIBRATE_DELAY
  96         bool
  97
  98 config GENERIC_IOMAP
  99         bool
 100
 101 config GENERIC_TIME
 102         def_bool y
 103
 104 config GENERIC_CLOCKEVENTS
 105         def_bool y
 106
 107 config GENERIC_CLOCKEVENTS_BROADCAST
 108         bool
 109
 110 config GENERIC_CMOS_UPDATE
 111         def_bool y
 112         depends on SH_SH03 || SH_DREAMCAST
 113
 114 config GENERIC_LOCKBREAK
 115         def_bool y
 116         depends on SMP && PREEMPT
 117
 118 config SYS_SUPPORTS_PM
 119         bool
 120         depends on !SMP
 121
 122 config ARCH_SUSPEND_POSSIBLE
 123         def_bool n
 124
 125 config ARCH_HIBERNATION_POSSIBLE
 126         def_bool n
 127
 128 config SYS_SUPPORTS_APM_EMULATION
 129         bool
 130         select ARCH_SUSPEND_POSSIBLE
 131
 132 config SYS_SUPPORTS_HUGETLBFS
 133         bool
 134
 135 config SYS_SUPPORTS_SMP
 136         bool
 137
 138 config SYS_SUPPORTS_NUMA
 139         bool
 140
 141 config SYS_SUPPORTS_PCI
 142         bool
 143
 144 config SYS_SUPPORTS_CMT
 145         bool
 146
 147 config SYS_SUPPORTS_MTU2
 148         bool
 149
 150 config SYS_SUPPORTS_TMU
 151         bool
 152
 153 config STACKTRACE_SUPPORT
 154         def_bool y
 155
 156 config LOCKDEP_SUPPORT
 157         def_bool y
 158
 159 config HAVE_LATENCYTOP_SUPPORT
 160         def_bool y
 161
 162 config ARCH_HAS_ILOG2_U32
 163         def_bool n
 164
 165 config ARCH_HAS_ILOG2_U64
 166         def_bool n
 167
 168 config ARCH_NO_VIRT_TO_BUS
 169         def_bool y
 170
 171 config ARCH_HAS_DEFAULT_IDLE
 172         def_bool y
 173
 174 config ARCH_HAS_CPU_IDLE_WAIT
 175         def_bool y
 176
 177 config IO_TRAPPED
 178         bool
 179
 180 config DMA_COHERENT
 181         bool
 182
 183 config DMA_NONCOHERENT
 184         def_bool !DMA_COHERENT
 185
 186 config NEED_DMA_MAP_STATE
 187         def_bool DMA_NONCOHERENT
 188
 189 config NEED_SG_DMA_LENGTH
 190         def_bool y
 191
 192 source "init/Kconfig"
 193
 194 source "kernel/Kconfig.freezer"
 195
 196 menu "System type"
 197
 198 #
 199 # Processor families
 200 #
 201 config CPU_SH2
 202         bool
 203
 204 config CPU_SH2A
 205         bool
 206         select CPU_SH2
 207
 208 config CPU_SH3
 209         bool
 210         select CPU_HAS_INTEVT
 211         select CPU_HAS_SR_RB
 212         select SYS_SUPPORTS_TMU
 213
 214 config CPU_SH4
 215         bool
 216         select CPU_HAS_INTEVT
 217         select CPU_HAS_SR_RB
 218         select CPU_HAS_FPU if !CPU_SH4AL_DSP
 219         select SYS_SUPPORTS_TMU
 220         select SYS_SUPPORTS_HUGETLBFS if MMU
 221
 222 config CPU_SH4A
 223         bool
 224         select CPU_SH4
 225
 226 config CPU_SH4AL_DSP
 227         bool
 228         select CPU_SH4A
 229         select CPU_HAS_DSP
 230
 231 config CPU_SH5
 232         bool
 233         select CPU_HAS_FPU
 234         select SYS_SUPPORTS_TMU
 235         select SYS_SUPPORTS_HUGETLBFS if MMU
 236
 237 config CPU_SHX2
 238         bool
 239
 240 config CPU_SHX3
 241         bool
 242         select DMA_COHERENT
 243         select SYS_SUPPORTS_SMP
 244         select SYS_SUPPORTS_NUMA
 245
 246 config ARCH_SHMOBILE
 247         bool
 248         select ARCH_SUSPEND_POSSIBLE
 249         select PM
 250         select PM_RUNTIME
 251
 252 if SUPERH32
 253
 254 choice
 255         prompt "Processor sub-type selection"
 256
 257 #
 258 # Processor subtypes
 259 #
 260
 261 # SH-2 Processor Support
 262
 263 config CPU_SUBTYPE_SH7619
 264         bool "Support SH7619 processor"
 265         select CPU_SH2
 266         select SYS_SUPPORTS_CMT
 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_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_CMT
 281         select SYS_SUPPORTS_MTU2
 282
 283 config CPU_SUBTYPE_SH7206
 284         bool "Support SH7206 processor"
 285         select CPU_SH2A
 286         select SYS_SUPPORTS_CMT
 287         select SYS_SUPPORTS_MTU2
 288
 289 config CPU_SUBTYPE_SH7263
 290         bool "Support SH7263 processor"
 291         select CPU_SH2A
 292         select CPU_HAS_FPU
 293         select SYS_SUPPORTS_CMT
 294         select SYS_SUPPORTS_MTU2
 295
 296 config CPU_SUBTYPE_MXG
 297         bool "Support MX-G processor"
 298         select CPU_SH2A
 299         select SYS_SUPPORTS_MTU2
 300         help
 301           Select MX-G if running on an R8A03022BG part.
 302
 303 # SH-3 Processor Support
 304
 305 config CPU_SUBTYPE_SH7705
 306         bool "Support SH7705 processor"
 307         select CPU_SH3
 308
 309 config CPU_SUBTYPE_SH7706
 310         bool "Support SH7706 processor"
 311         select CPU_SH3
 312         help
 313           Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
 314
 315 config CPU_SUBTYPE_SH7707
 316         bool "Support SH7707 processor"
 317         select CPU_SH3
 318         help
 319           Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
 320
 321 config CPU_SUBTYPE_SH7708
 322         bool "Support SH7708 processor"
 323         select CPU_SH3
 324         help
 325           Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
 326           if you have a 100 Mhz SH-3 HD6417708R CPU.
 327
 328 config CPU_SUBTYPE_SH7709
 329         bool "Support SH7709 processor"
 330         select CPU_SH3
 331         help
 332           Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
 333
 334 config CPU_SUBTYPE_SH7710
 335         bool "Support SH7710 processor"
 336         select CPU_SH3
 337         select CPU_HAS_DSP
 338         help
 339           Select SH7710 if you have a SH3-DSP SH7710 CPU.
 340
 341 config CPU_SUBTYPE_SH7712
 342         bool "Support SH7712 processor"
 343         select CPU_SH3
 344         select CPU_HAS_DSP
 345         help
 346           Select SH7712 if you have a SH3-DSP SH7712 CPU.
 347
 348 config CPU_SUBTYPE_SH7720
 349         bool "Support SH7720 processor"
 350         select CPU_SH3
 351         select CPU_HAS_DSP
 352         select SYS_SUPPORTS_CMT
 353         help
 354           Select SH7720 if you have a SH3-DSP SH7720 CPU.
 355
 356 config CPU_SUBTYPE_SH7721
 357         bool "Support SH7721 processor"
 358         select CPU_SH3
 359         select CPU_HAS_DSP
 360         select SYS_SUPPORTS_CMT
 361         help
 362           Select SH7721 if you have a SH3-DSP SH7721 CPU.
 363
 364 # SH-4 Processor Support
 365
 366 config CPU_SUBTYPE_SH7750
 367         bool "Support SH7750 processor"
 368         select CPU_SH4
 369         help
 370           Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
 371
 372 config CPU_SUBTYPE_SH7091
 373         bool "Support SH7091 processor"
 374         select CPU_SH4
 375         help
 376           Select SH7091 if you have an SH-4 based Sega device (such as
 377           the Dreamcast, Naomi, and Naomi 2).
 378
 379 config CPU_SUBTYPE_SH7750R
 380         bool "Support SH7750R processor"
 381         select CPU_SH4
 382
 383 config CPU_SUBTYPE_SH7750S
 384         bool "Support SH7750S processor"
 385         select CPU_SH4
 386
 387 config CPU_SUBTYPE_SH7751
 388         bool "Support SH7751 processor"
 389         select CPU_SH4
 390         help
 391           Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
 392           or if you have a HD6417751R CPU.
 393
 394 config CPU_SUBTYPE_SH7751R
 395         bool "Support SH7751R processor"
 396         select CPU_SH4
 397
 398 config CPU_SUBTYPE_SH7760
 399         bool "Support SH7760 processor"
 400         select CPU_SH4
 401
 402 config CPU_SUBTYPE_SH4_202
 403         bool "Support SH4-202 processor"
 404         select CPU_SH4
 405
 406 # SH-4A Processor Support
 407
 408 config CPU_SUBTYPE_SH7723
 409         bool "Support SH7723 processor"
 410         select CPU_SH4A
 411         select CPU_SHX2
 412         select ARCH_SHMOBILE
 413         select ARCH_SPARSEMEM_ENABLE
 414         select SYS_SUPPORTS_CMT
 415         help
 416           Select SH7723 if you have an SH-MobileR2 CPU.
 417
 418 config CPU_SUBTYPE_SH7724
 419         bool "Support SH7724 processor"
 420         select CPU_SH4A
 421         select CPU_SHX2
 422         select ARCH_SHMOBILE
 423         select ARCH_SPARSEMEM_ENABLE
 424         select SYS_SUPPORTS_CMT
 425         help
 426           Select SH7724 if you have an SH-MobileR2R CPU.
 427
 428 config CPU_SUBTYPE_SH7757
 429         bool "Support SH7757 processor"
 430         select CPU_SH4A
 431         select CPU_SHX2
 432         help
 433           Select SH7757 if you have a SH4A SH7757 CPU.
 434
 435 config CPU_SUBTYPE_SH7763
 436         bool "Support SH7763 processor"
 437         select CPU_SH4A
 438         help
 439           Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
 440
 441 config CPU_SUBTYPE_SH7770
 442         bool "Support SH7770 processor"
 443         select CPU_SH4A
 444
 445 config CPU_SUBTYPE_SH7780
 446         bool "Support SH7780 processor"
 447         select CPU_SH4A
 448
 449 config CPU_SUBTYPE_SH7785
 450         bool "Support SH7785 processor"
 451         select CPU_SH4A
 452         select CPU_SHX2
 453         select ARCH_SPARSEMEM_ENABLE
 454         select SYS_SUPPORTS_NUMA
 455
 456 config CPU_SUBTYPE_SH7786
 457         bool "Support SH7786 processor"
 458         select CPU_SH4A
 459         select CPU_SHX3
 460         select CPU_HAS_PTEAEX
 461         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 462
 463 config CPU_SUBTYPE_SHX3
 464         bool "Support SH-X3 processor"
 465         select CPU_SH4A
 466         select CPU_SHX3
 467         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 468
 469 # SH4AL-DSP Processor Support
 470
 471 config CPU_SUBTYPE_SH7343
 472         bool "Support SH7343 processor"
 473         select CPU_SH4AL_DSP
 474         select ARCH_SHMOBILE
 475         select SYS_SUPPORTS_CMT
 476
 477 config CPU_SUBTYPE_SH7722
 478         bool "Support SH7722 processor"
 479         select CPU_SH4AL_DSP
 480         select CPU_SHX2
 481         select ARCH_SHMOBILE
 482         select ARCH_SPARSEMEM_ENABLE
 483         select SYS_SUPPORTS_NUMA
 484         select SYS_SUPPORTS_CMT
 485
 486 config CPU_SUBTYPE_SH7366
 487         bool "Support SH7366 processor"
 488         select CPU_SH4AL_DSP
 489         select CPU_SHX2
 490         select ARCH_SHMOBILE
 491         select ARCH_SPARSEMEM_ENABLE
 492         select SYS_SUPPORTS_NUMA
 493         select SYS_SUPPORTS_CMT
 494
 495 endchoice
 496
 497 endif
 498
 499 if SUPERH64
 500
 501 choice
 502         prompt "Processor sub-type selection"
 503
 504 # SH-5 Processor Support
 505
 506 config CPU_SUBTYPE_SH5_101
 507         bool "Support SH5-101 processor"
 508         select CPU_SH5
 509
 510 config CPU_SUBTYPE_SH5_103
 511         bool "Support SH5-103 processor"
 512         select CPU_SH5
 513
 514 endchoice
 515
 516 endif
 517
 518 source "arch/sh/mm/Kconfig"
 519
 520 source "arch/sh/Kconfig.cpu"
 521
 522 source "arch/sh/boards/Kconfig"
 523
 524 menu "Timer and clock configuration"
 525
 526 config SH_TIMER_TMU
 527         bool "TMU timer driver"
 528         depends on SYS_SUPPORTS_TMU
 529         default y
 530         help
 531           This enables the build of the TMU timer driver.
 532
 533 config SH_TIMER_CMT
 534         bool "CMT timer driver"
 535         depends on SYS_SUPPORTS_CMT
 536         default y
 537         help
 538           This enables build of the CMT timer driver.
 539
 540 config SH_TIMER_MTU2
 541         bool "MTU2 timer driver"
 542         depends on SYS_SUPPORTS_MTU2
 543         default y
 544         help
 545           This enables build of the MTU2 timer driver.
 546
 547 config SH_PCLK_FREQ
 548         int "Peripheral clock frequency (in Hz)"
 549         depends on SH_CLK_CPG_LEGACY
 550         default "31250000" if CPU_SUBTYPE_SH7619
 551         default "33333333" if CPU_SUBTYPE_SH7770 || \
 552                               CPU_SUBTYPE_SH7760 || \
 553                               CPU_SUBTYPE_SH7705 || \
 554                               CPU_SUBTYPE_SH7203 || \
 555                               CPU_SUBTYPE_SH7206 || \
 556                               CPU_SUBTYPE_SH7263 || \
 557                               CPU_SUBTYPE_MXG
 558         default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
 559         default "66000000" if CPU_SUBTYPE_SH4_202
 560         default "50000000"
 561         help
 562           This option is used to specify the peripheral clock frequency.
 563           This is necessary for determining the reference clock value on
 564           platforms lacking an RTC.
 565
 566 config SH_CLK_CPG
 567         def_bool y
 568
 569 config SH_CLK_CPG_LEGACY
 570         depends on SH_CLK_CPG
 571         def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
 572                       !CPU_SUBTYPE_SH7786
 573
 574 config SH_CLK_MD
 575         int "CPU Mode Pin Setting"
 576         depends on CPU_SH2
 577         default 6 if CPU_SUBTYPE_SH7206
 578         default 5 if CPU_SUBTYPE_SH7619
 579         default 0
 580         help
 581           MD2 - MD0 pin setting.
 582
 583 source "kernel/time/Kconfig"
 584
 585 endmenu
 586
 587 menu "CPU Frequency scaling"
 588
 589 source "drivers/cpufreq/Kconfig"
 590
 591 config SH_CPU_FREQ
 592         tristate "SuperH CPU Frequency driver"
 593         depends on CPU_FREQ
 594         select CPU_FREQ_TABLE
 595         help
 596           This adds the cpufreq driver for SuperH. Any CPU that supports
 597           clock rate rounding through the clock framework can use this
 598           driver. While it will make the kernel slightly larger, this is
 599           harmless for CPUs that don't support rate rounding. The driver
 600           will also generate a notice in the boot log before disabling
 601           itself if the CPU in question is not capable of rate rounding.
 602
 603           For details, take a look at <file:Documentation/cpu-freq>.
 604
 605           If unsure, say N.
 606
 607 endmenu
 608
 609 source "arch/sh/drivers/Kconfig"
 610
 611 endmenu
 612
 613 menu "Kernel features"
 614
 615 source kernel/Kconfig.hz
 616
 617 config KEXEC
 618         bool "kexec system call (EXPERIMENTAL)"
 619         depends on SUPERH32 && EXPERIMENTAL && MMU
 620         help
 621           kexec is a system call that implements the ability to shutdown your
 622           current kernel, and to start another kernel.  It is like a reboot
 623           but it is independent of the system firmware.  And like a reboot
 624           you can start any kernel with it, not just Linux.
 625
 626           The name comes from the similarity to the exec system call.
 627
 628           It is an ongoing process to be certain the hardware in a machine
 629           is properly shutdown, so do not be surprised if this code does not
 630           initially work for you.  It may help to enable device hotplugging
 631           support.  As of this writing the exact hardware interface is
 632           strongly in flux, so no good recommendation can be made.
 633
 634 config CRASH_DUMP
 635         bool "kernel crash dumps (EXPERIMENTAL)"
 636         depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
 637         help
 638           Generate crash dump after being started by kexec.
 639           This should be normally only set in special crash dump kernels
 640           which are loaded in the main kernel with kexec-tools into
 641           a specially reserved region and then later executed after
 642           a crash by kdump/kexec. The crash dump kernel must be compiled
 643           to a memory address not used by the main kernel using
 644           MEMORY_START.
 645
 646           For more details see Documentation/kdump/kdump.txt
 647
 648 config KEXEC_JUMP
 649         bool "kexec jump (EXPERIMENTAL)"
 650         depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
 651         help
 652           Jump between original kernel and kexeced kernel and invoke
 653           code via KEXEC
 654
 655 config SECCOMP
 656         bool "Enable seccomp to safely compute untrusted bytecode"
 657         depends on PROC_FS
 658         help
 659           This kernel feature is useful for number crunching applications
 660           that may need to compute untrusted bytecode during their
 661           execution. By using pipes or other transports made available to
 662           the process as file descriptors supporting the read/write
 663           syscalls, it's possible to isolate those applications in
 664           their own address space using seccomp. Once seccomp is
 665           enabled via prctl, it cannot be disabled and the task is only
 666           allowed to execute a few safe syscalls defined by each seccomp
 667           mode.
 668
 669           If unsure, say N.
 670
 671 config SMP
 672         bool "Symmetric multi-processing support"
 673         depends on SYS_SUPPORTS_SMP
 674         select USE_GENERIC_SMP_HELPERS
 675         ---help---
 676           This enables support for systems with more than one CPU. If you have
 677           a system with only one CPU, like most personal computers, say N. If
 678           you have a system with more than one CPU, say Y.
 679
 680           If you say N here, the kernel will run on single and multiprocessor
 681           machines, but will use only one CPU of a multiprocessor machine. If
 682           you say Y here, the kernel will run on many, but not all,
 683           singleprocessor machines. On a singleprocessor machine, the kernel
 684           will run faster if you say N here.
 685
 686           People using multiprocessor machines who say Y here should also say
 687           Y to "Enhanced Real Time Clock Support", below.
 688
 689           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 690           available at <http://www.tldp.org/docs.html#howto>.
 691
 692           If you don't know what to do here, say N.
 693
 694 config NR_CPUS
 695         int "Maximum number of CPUs (2-32)"
 696         range 2 32
 697         depends on SMP
 698         default "4" if CPU_SUBTYPE_SHX3
 699         default "2"
 700         help
 701           This allows you to specify the maximum number of CPUs which this
 702           kernel will support.  The maximum supported value is 32 and the
 703           minimum value which makes sense is 2.
 704
 705           This is purely to save memory - each supported CPU adds
 706           approximately eight kilobytes to the kernel image.
 707
 708 config HOTPLUG_CPU
 709         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 710         depends on SMP && HOTPLUG && EXPERIMENTAL
 711         help
 712           Say Y here to experiment with turning CPUs off and on.  CPUs
 713           can be controlled through /sys/devices/system/cpu.
 714
 715 source "kernel/Kconfig.preempt"
 716
 717 config GUSA
 718         def_bool y
 719         depends on !SMP && SUPERH32
 720         help
 721           This enables support for gUSA (general UserSpace Atomicity).
 722           This is the default implementation for both UP and non-ll/sc
 723           CPUs, and is used by the libc, amongst others.
 724
 725           For additional information, design information can be found
 726           in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
 727
 728           This should only be disabled for special cases where alternate
 729           atomicity implementations exist.
 730
 731 config GUSA_RB
 732         bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
 733         depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
 734         help
 735           Enabling this option will allow the kernel to implement some
 736           atomic operations using a software implementation of load-locked/
 737           store-conditional (LLSC). On machines which do not have hardware
 738           LLSC, this should be more efficient than the other alternative of
 739           disabling interrupts around the atomic sequence.
 740
 741 source "drivers/sh/Kconfig"
 742
 743 endmenu
 744
 745 menu "Boot options"
 746
 747 config ZERO_PAGE_OFFSET
 748         hex
 749         default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
 750                                 SH_7751_SOLUTION_ENGINE
 751         default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
 752         default "0x00002000" if PAGE_SIZE_8KB
 753         default "0x00001000"
 754         help
 755           This sets the default offset of zero page.
 756
 757 config BOOT_LINK_OFFSET
 758         hex
 759         default "0x00210000" if SH_SHMIN
 760         default "0x00400000" if SH_CAYMAN
 761         default "0x00810000" if SH_7780_SOLUTION_ENGINE
 762         default "0x009e0000" if SH_TITAN
 763         default "0x01800000" if SH_SDK7780
 764         default "0x02000000" if SH_EDOSK7760
 765         default "0x00800000"
 766         help
 767           This option allows you to set the link address offset of the zImage.
 768           This can be useful if you are on a board which has a small amount of
 769           memory.
 770
 771 config ENTRY_OFFSET
 772         hex
 773         default "0x00001000" if PAGE_SIZE_4KB
 774         default "0x00002000" if PAGE_SIZE_8KB
 775         default "0x00004000" if PAGE_SIZE_16KB
 776         default "0x00010000" if PAGE_SIZE_64KB
 777         default "0x00000000"
 778
 779 choice
 780         prompt "Kernel command line"
 781         optional
 782         default CMDLINE_OVERWRITE
 783         help
 784           Setting this option allows the kernel command line arguments
 785           to be set.
 786
 787 config CMDLINE_OVERWRITE
 788         bool "Overwrite bootloader kernel arguments"
 789         help
 790           Given string will overwrite any arguments passed in by
 791           a bootloader.
 792
 793 config CMDLINE_EXTEND
 794         bool "Extend bootloader kernel arguments"
 795         help
 796           Given string will be concatenated with arguments passed in
 797           by a bootloader.
 798
 799 endchoice
 800
 801 config CMDLINE
 802         string "Kernel command line arguments string"
 803         depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
 804         default "console=ttySC1,115200"
 805
 806 endmenu
 807
 808 menu "Bus options"
 809
 810 config SUPERHYWAY
 811         tristate "SuperHyway Bus support"
 812         depends on CPU_SUBTYPE_SH4_202
 813
 814 config MAPLE
 815         bool "Maple Bus support"
 816         depends on SH_DREAMCAST
 817         help
 818          The Maple Bus is SEGA's serial communication bus for peripherals
 819          on the Dreamcast. Without this bus support you won't be able to
 820          get your Dreamcast keyboard etc to work, so most users
 821          probably want to say 'Y' here, unless you are only using the
 822          Dreamcast with a serial line terminal or a remote network
 823          connection.
 824
 825 config PCI
 826         bool "PCI support"
 827         depends on SYS_SUPPORTS_PCI
 828         select PCI_DOMAINS
 829         help
 830           Find out whether you have a PCI motherboard. PCI is the name of a
 831           bus system, i.e. the way the CPU talks to the other stuff inside
 832           your box. If you have PCI, say Y, otherwise N.
 833
 834 config PCI_DOMAINS
 835         bool
 836
 837 source "drivers/pci/pcie/Kconfig"
 838
 839 source "drivers/pci/Kconfig"
 840
 841 source "drivers/pcmcia/Kconfig"
 842
 843 source "drivers/pci/hotplug/Kconfig"
 844
 845 endmenu
 846
 847 menu "Executable file formats"
 848
 849 source "fs/Kconfig.binfmt"
 850
 851 endmenu
 852
 853 menu "Power management options (EXPERIMENTAL)"
 854 depends on EXPERIMENTAL
 855
 856 source "kernel/power/Kconfig"
 857
 858 source "drivers/cpuidle/Kconfig"
 859
 860 endmenu
 861
 862 source "net/Kconfig"
 863
 864 source "drivers/Kconfig"
 865
 866 source "fs/Kconfig"
 867
 868 source "arch/sh/Kconfig.debug"
 869
 870 source "security/Kconfig"
 871
 872 source "crypto/Kconfig"
 873
 874 menuconfig VIRTUALIZATION
 875         bool "Virtualization"
 876         default n
 877         ---help---
 878           Say Y here to get to see options for using your Linux host to run other
 879           operating systems inside virtual machines (guests).
 880           This option alone does not add any kernel code.
 881
 882           If you say N, all options in this submenu will be skipped and disabled.
 883
 884 if VIRTUALIZATION
 885
 886 source drivers/virtio/Kconfig
 887
 888 endif # VIRTUALIZATION
 889
 890 source "lib/Kconfig"