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 PERF_EVENTS if HAVE_HW_BREAKPOINT
  48         select ARCH_HIBERNATION_POSSIBLE if MMU
  49
  50 config SUPERH64
  51         def_bool ARCH = "sh64"
  52
  53 config ARCH_DEFCONFIG
  54         string
  55         default "arch/sh/configs/shx3_defconfig" if SUPERH32
  56         default "arch/sh/configs/cayman_defconfig" if SUPERH64
  57
  58 config RWSEM_GENERIC_SPINLOCK
  59         def_bool y
  60
  61 config RWSEM_XCHGADD_ALGORITHM
  62         bool
  63
  64 config GENERIC_BUG
  65         def_bool y
  66         depends on BUG && SUPERH32
  67
  68 config GENERIC_CSUM
  69         def_bool y
  70         depends on SUPERH64
  71
  72 config GENERIC_FIND_NEXT_BIT
  73         def_bool y
  74
  75 config GENERIC_HWEIGHT
  76         def_bool y
  77
  78 config GENERIC_HARDIRQS
  79         def_bool y
  80
  81 config GENERIC_HARDIRQS_NO__DO_IRQ
  82         def_bool y
  83
  84 config GENERIC_IRQ_PROBE
  85         def_bool y
  86
  87 config IRQ_PER_CPU
  88         def_bool y
  89
  90 config GENERIC_GPIO
  91         def_bool n
  92
  93 config GENERIC_CALIBRATE_DELAY
  94         bool
  95
  96 config GENERIC_IOMAP
  97         bool
  98
  99 config GENERIC_TIME
 100         def_bool y
 101
 102 config GENERIC_CLOCKEVENTS
 103         def_bool y
 104
 105 config GENERIC_CLOCKEVENTS_BROADCAST
 106         bool
 107
 108 config GENERIC_CMOS_UPDATE
 109         def_bool y
 110         depends on SH_SH03 || SH_DREAMCAST
 111
 112 config GENERIC_LOCKBREAK
 113         def_bool y
 114         depends on SMP && PREEMPT
 115
 116 config SYS_SUPPORTS_PM
 117         bool
 118         depends on !SMP
 119
 120 config ARCH_SUSPEND_POSSIBLE
 121         def_bool n
 122
 123 config ARCH_HIBERNATION_POSSIBLE
 124         def_bool n
 125
 126 config SYS_SUPPORTS_APM_EMULATION
 127         bool
 128         select ARCH_SUSPEND_POSSIBLE
 129
 130 config SYS_SUPPORTS_HUGETLBFS
 131         bool
 132
 133 config SYS_SUPPORTS_SMP
 134         bool
 135
 136 config SYS_SUPPORTS_NUMA
 137         bool
 138
 139 config SYS_SUPPORTS_PCI
 140         bool
 141
 142 config SYS_SUPPORTS_CMT
 143         bool
 144
 145 config SYS_SUPPORTS_MTU2
 146         bool
 147
 148 config SYS_SUPPORTS_TMU
 149         bool
 150
 151 config STACKTRACE_SUPPORT
 152         def_bool y
 153
 154 config LOCKDEP_SUPPORT
 155         def_bool y
 156
 157 config HAVE_LATENCYTOP_SUPPORT
 158         def_bool y
 159         depends on !SMP
 160
 161 config ARCH_HAS_ILOG2_U32
 162         def_bool n
 163
 164 config ARCH_HAS_ILOG2_U64
 165         def_bool n
 166
 167 config ARCH_NO_VIRT_TO_BUS
 168         def_bool y
 169
 170 config ARCH_HAS_DEFAULT_IDLE
 171         def_bool y
 172
 173 config ARCH_HAS_CPU_IDLE_WAIT
 174         def_bool y
 175
 176 config IO_TRAPPED
 177         bool
 178
 179 config DMA_COHERENT
 180         bool
 181
 182 config DMA_NONCOHERENT
 183         def_bool !DMA_COHERENT
 184
 185 source "init/Kconfig"
 186
 187 source "kernel/Kconfig.freezer"
 188
 189 menu "System type"
 190
 191 #
 192 # Processor families
 193 #
 194 config CPU_SH2
 195         bool
 196
 197 config CPU_SH2A
 198         bool
 199         select CPU_SH2
 200
 201 config CPU_SH3
 202         bool
 203         select CPU_HAS_INTEVT
 204         select CPU_HAS_SR_RB
 205         select SYS_SUPPORTS_TMU
 206
 207 config CPU_SH4
 208         bool
 209         select CPU_HAS_INTEVT
 210         select CPU_HAS_SR_RB
 211         select CPU_HAS_FPU if !CPU_SH4AL_DSP
 212         select SYS_SUPPORTS_TMU
 213         select SYS_SUPPORTS_HUGETLBFS if MMU
 214
 215 config CPU_SH4A
 216         bool
 217         select CPU_SH4
 218
 219 config CPU_SH4AL_DSP
 220         bool
 221         select CPU_SH4A
 222         select CPU_HAS_DSP
 223
 224 config CPU_SH5
 225         bool
 226         select CPU_HAS_FPU
 227         select SYS_SUPPORTS_TMU
 228         select SYS_SUPPORTS_HUGETLBFS if MMU
 229
 230 config CPU_SHX2
 231         bool
 232
 233 config CPU_SHX3
 234         bool
 235         select DMA_COHERENT
 236
 237 config ARCH_SHMOBILE
 238         bool
 239         select ARCH_SUSPEND_POSSIBLE
 240         select PM
 241         select PM_RUNTIME
 242
 243 if SUPERH32
 244
 245 choice
 246         prompt "Processor sub-type selection"
 247
 248 #
 249 # Processor subtypes
 250 #
 251
 252 # SH-2 Processor Support
 253
 254 config CPU_SUBTYPE_SH7619
 255         bool "Support SH7619 processor"
 256         select CPU_SH2
 257         select SYS_SUPPORTS_CMT
 258
 259 # SH-2A Processor Support
 260
 261 config CPU_SUBTYPE_SH7201
 262         bool "Support SH7201 processor"
 263         select CPU_SH2A
 264         select CPU_HAS_FPU
 265         select SYS_SUPPORTS_MTU2
 266
 267 config CPU_SUBTYPE_SH7203
 268         bool "Support SH7203 processor"
 269         select CPU_SH2A
 270         select CPU_HAS_FPU
 271         select SYS_SUPPORTS_CMT
 272         select SYS_SUPPORTS_MTU2
 273
 274 config CPU_SUBTYPE_SH7206
 275         bool "Support SH7206 processor"
 276         select CPU_SH2A
 277         select SYS_SUPPORTS_CMT
 278         select SYS_SUPPORTS_MTU2
 279
 280 config CPU_SUBTYPE_SH7263
 281         bool "Support SH7263 processor"
 282         select CPU_SH2A
 283         select CPU_HAS_FPU
 284         select SYS_SUPPORTS_CMT
 285         select SYS_SUPPORTS_MTU2
 286
 287 config CPU_SUBTYPE_MXG
 288         bool "Support MX-G processor"
 289         select CPU_SH2A
 290         select SYS_SUPPORTS_MTU2
 291         help
 292           Select MX-G if running on an R8A03022BG part.
 293
 294 # SH-3 Processor Support
 295
 296 config CPU_SUBTYPE_SH7705
 297         bool "Support SH7705 processor"
 298         select CPU_SH3
 299
 300 config CPU_SUBTYPE_SH7706
 301         bool "Support SH7706 processor"
 302         select CPU_SH3
 303         help
 304           Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
 305
 306 config CPU_SUBTYPE_SH7707
 307         bool "Support SH7707 processor"
 308         select CPU_SH3
 309         help
 310           Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
 311
 312 config CPU_SUBTYPE_SH7708
 313         bool "Support SH7708 processor"
 314         select CPU_SH3
 315         help
 316           Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
 317           if you have a 100 Mhz SH-3 HD6417708R CPU.
 318
 319 config CPU_SUBTYPE_SH7709
 320         bool "Support SH7709 processor"
 321         select CPU_SH3
 322         help
 323           Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
 324
 325 config CPU_SUBTYPE_SH7710
 326         bool "Support SH7710 processor"
 327         select CPU_SH3
 328         select CPU_HAS_DSP
 329         help
 330           Select SH7710 if you have a SH3-DSP SH7710 CPU.
 331
 332 config CPU_SUBTYPE_SH7712
 333         bool "Support SH7712 processor"
 334         select CPU_SH3
 335         select CPU_HAS_DSP
 336         help
 337           Select SH7712 if you have a SH3-DSP SH7712 CPU.
 338
 339 config CPU_SUBTYPE_SH7720
 340         bool "Support SH7720 processor"
 341         select CPU_SH3
 342         select CPU_HAS_DSP
 343         select SYS_SUPPORTS_CMT
 344         help
 345           Select SH7720 if you have a SH3-DSP SH7720 CPU.
 346
 347 config CPU_SUBTYPE_SH7721
 348         bool "Support SH7721 processor"
 349         select CPU_SH3
 350         select CPU_HAS_DSP
 351         select SYS_SUPPORTS_CMT
 352         help
 353           Select SH7721 if you have a SH3-DSP SH7721 CPU.
 354
 355 # SH-4 Processor Support
 356
 357 config CPU_SUBTYPE_SH7750
 358         bool "Support SH7750 processor"
 359         select CPU_SH4
 360         help
 361           Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
 362
 363 config CPU_SUBTYPE_SH7091
 364         bool "Support SH7091 processor"
 365         select CPU_SH4
 366         help
 367           Select SH7091 if you have an SH-4 based Sega device (such as
 368           the Dreamcast, Naomi, and Naomi 2).
 369
 370 config CPU_SUBTYPE_SH7750R
 371         bool "Support SH7750R processor"
 372         select CPU_SH4
 373
 374 config CPU_SUBTYPE_SH7750S
 375         bool "Support SH7750S processor"
 376         select CPU_SH4
 377
 378 config CPU_SUBTYPE_SH7751
 379         bool "Support SH7751 processor"
 380         select CPU_SH4
 381         help
 382           Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
 383           or if you have a HD6417751R CPU.
 384
 385 config CPU_SUBTYPE_SH7751R
 386         bool "Support SH7751R processor"
 387         select CPU_SH4
 388
 389 config CPU_SUBTYPE_SH7760
 390         bool "Support SH7760 processor"
 391         select CPU_SH4
 392
 393 config CPU_SUBTYPE_SH4_202
 394         bool "Support SH4-202 processor"
 395         select CPU_SH4
 396
 397 # SH-4A Processor Support
 398
 399 config CPU_SUBTYPE_SH7723
 400         bool "Support SH7723 processor"
 401         select CPU_SH4A
 402         select CPU_SHX2
 403         select ARCH_SHMOBILE
 404         select ARCH_SPARSEMEM_ENABLE
 405         select SYS_SUPPORTS_CMT
 406         help
 407           Select SH7723 if you have an SH-MobileR2 CPU.
 408
 409 config CPU_SUBTYPE_SH7724
 410         bool "Support SH7724 processor"
 411         select CPU_SH4A
 412         select CPU_SHX2
 413         select ARCH_SHMOBILE
 414         select ARCH_SPARSEMEM_ENABLE
 415         select SYS_SUPPORTS_CMT
 416         help
 417           Select SH7724 if you have an SH-MobileR2R CPU.
 418
 419 config CPU_SUBTYPE_SH7757
 420         bool "Support SH7757 processor"
 421         select CPU_SH4A
 422         select CPU_SHX2
 423         help
 424           Select SH7757 if you have a SH4A SH7757 CPU.
 425
 426 config CPU_SUBTYPE_SH7763
 427         bool "Support SH7763 processor"
 428         select CPU_SH4A
 429         help
 430           Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
 431
 432 config CPU_SUBTYPE_SH7770
 433         bool "Support SH7770 processor"
 434         select CPU_SH4A
 435
 436 config CPU_SUBTYPE_SH7780
 437         bool "Support SH7780 processor"
 438         select CPU_SH4A
 439
 440 config CPU_SUBTYPE_SH7785
 441         bool "Support SH7785 processor"
 442         select CPU_SH4A
 443         select CPU_SHX2
 444         select ARCH_SPARSEMEM_ENABLE
 445         select SYS_SUPPORTS_NUMA
 446
 447 config CPU_SUBTYPE_SH7786
 448         bool "Support SH7786 processor"
 449         select CPU_SH4A
 450         select CPU_SHX3
 451         select CPU_HAS_PTEAEX
 452         select ARCH_SPARSEMEM_ENABLE
 453         select SYS_SUPPORTS_NUMA
 454         select SYS_SUPPORTS_SMP
 455         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 456
 457 config CPU_SUBTYPE_SHX3
 458         bool "Support SH-X3 processor"
 459         select CPU_SH4A
 460         select CPU_SHX3
 461         select ARCH_SPARSEMEM_ENABLE
 462         select SYS_SUPPORTS_NUMA
 463         select SYS_SUPPORTS_SMP
 464         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 465
 466 # SH4AL-DSP Processor Support
 467
 468 config CPU_SUBTYPE_SH7343
 469         bool "Support SH7343 processor"
 470         select CPU_SH4AL_DSP
 471         select ARCH_SHMOBILE
 472         select SYS_SUPPORTS_CMT
 473
 474 config CPU_SUBTYPE_SH7722
 475         bool "Support SH7722 processor"
 476         select CPU_SH4AL_DSP
 477         select CPU_SHX2
 478         select ARCH_SHMOBILE
 479         select ARCH_SPARSEMEM_ENABLE
 480         select SYS_SUPPORTS_NUMA
 481         select SYS_SUPPORTS_CMT
 482
 483 config CPU_SUBTYPE_SH7366
 484         bool "Support SH7366 processor"
 485         select CPU_SH4AL_DSP
 486         select CPU_SHX2
 487         select ARCH_SHMOBILE
 488         select ARCH_SPARSEMEM_ENABLE
 489         select SYS_SUPPORTS_NUMA
 490         select SYS_SUPPORTS_CMT
 491
 492 endchoice
 493
 494 endif
 495
 496 if SUPERH64
 497
 498 choice
 499         prompt "Processor sub-type selection"
 500
 501 # SH-5 Processor Support
 502
 503 config CPU_SUBTYPE_SH5_101
 504         bool "Support SH5-101 processor"
 505         select CPU_SH5
 506
 507 config CPU_SUBTYPE_SH5_103
 508         bool "Support SH5-103 processor"
 509         select CPU_SH5
 510
 511 endchoice
 512
 513 endif
 514
 515 source "arch/sh/mm/Kconfig"
 516
 517 source "arch/sh/Kconfig.cpu"
 518
 519 source "arch/sh/boards/Kconfig"
 520
 521 menu "Timer and clock configuration"
 522
 523 config SH_TIMER_TMU
 524         bool "TMU timer driver"
 525         depends on SYS_SUPPORTS_TMU
 526         default y
 527         help
 528           This enables the build of the TMU timer driver.
 529
 530 config SH_TIMER_CMT
 531         bool "CMT timer driver"
 532         depends on SYS_SUPPORTS_CMT
 533         default y
 534         help
 535           This enables build of the CMT timer driver.
 536
 537 config SH_TIMER_MTU2
 538         bool "MTU2 timer driver"
 539         depends on SYS_SUPPORTS_MTU2
 540         default y
 541         help
 542           This enables build of the MTU2 timer driver.
 543
 544 config SH_PCLK_FREQ
 545         int "Peripheral clock frequency (in Hz)"
 546         depends on SH_CLK_CPG_LEGACY
 547         default "31250000" if CPU_SUBTYPE_SH7619
 548         default "33333333" if CPU_SUBTYPE_SH7770 || \
 549                               CPU_SUBTYPE_SH7760 || \
 550                               CPU_SUBTYPE_SH7705 || \
 551                               CPU_SUBTYPE_SH7203 || \
 552                               CPU_SUBTYPE_SH7206 || \
 553                               CPU_SUBTYPE_SH7263 || \
 554                               CPU_SUBTYPE_MXG    || \
 555                               CPU_SUBTYPE_SH7786
 556         default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
 557         default "66000000" if CPU_SUBTYPE_SH4_202
 558         default "50000000"
 559         help
 560           This option is used to specify the peripheral clock frequency.
 561           This is necessary for determining the reference clock value on
 562           platforms lacking an RTC.
 563
 564 config SH_CLK_CPG
 565         def_bool y
 566
 567 config SH_CLK_CPG_LEGACY
 568         depends on SH_CLK_CPG
 569         def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE
 570
 571 config SH_CLK_MD
 572         int "CPU Mode Pin Setting"
 573         depends on CPU_SH2
 574         default 6 if CPU_SUBTYPE_SH7206
 575         default 5 if CPU_SUBTYPE_SH7619
 576         default 0
 577         help
 578           MD2 - MD0 pin setting.
 579
 580 source "kernel/time/Kconfig"
 581
 582 endmenu
 583
 584 menu "CPU Frequency scaling"
 585
 586 source "drivers/cpufreq/Kconfig"
 587
 588 config SH_CPU_FREQ
 589         tristate "SuperH CPU Frequency driver"
 590         depends on CPU_FREQ
 591         select CPU_FREQ_TABLE
 592         help
 593           This adds the cpufreq driver for SuperH. Any CPU that supports
 594           clock rate rounding through the clock framework can use this
 595           driver. While it will make the kernel slightly larger, this is
 596           harmless for CPUs that don't support rate rounding. The driver
 597           will also generate a notice in the boot log before disabling
 598           itself if the CPU in question is not capable of rate rounding.
 599
 600           For details, take a look at <file:Documentation/cpu-freq>.
 601
 602           If unsure, say N.
 603
 604 endmenu
 605
 606 source "arch/sh/drivers/Kconfig"
 607
 608 endmenu
 609
 610 menu "Kernel features"
 611
 612 source kernel/Kconfig.hz
 613
 614 config KEXEC
 615         bool "kexec system call (EXPERIMENTAL)"
 616         depends on SUPERH32 && EXPERIMENTAL && MMU
 617         help
 618           kexec is a system call that implements the ability to shutdown your
 619           current kernel, and to start another kernel.  It is like a reboot
 620           but it is independent of the system firmware.  And like a reboot
 621           you can start any kernel with it, not just Linux.
 622
 623           The name comes from the similarity to the exec system call.
 624
 625           It is an ongoing process to be certain the hardware in a machine
 626           is properly shutdown, so do not be surprised if this code does not
 627           initially work for you.  It may help to enable device hotplugging
 628           support.  As of this writing the exact hardware interface is
 629           strongly in flux, so no good recommendation can be made.
 630
 631 config CRASH_DUMP
 632         bool "kernel crash dumps (EXPERIMENTAL)"
 633         depends on SUPERH32 && EXPERIMENTAL
 634         help
 635           Generate crash dump after being started by kexec.
 636           This should be normally only set in special crash dump kernels
 637           which are loaded in the main kernel with kexec-tools into
 638           a specially reserved region and then later executed after
 639           a crash by kdump/kexec. The crash dump kernel must be compiled
 640           to a memory address not used by the main kernel using
 641           MEMORY_START.
 642
 643           For more details see Documentation/kdump/kdump.txt
 644
 645 config KEXEC_JUMP
 646         bool "kexec jump (EXPERIMENTAL)"
 647         depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
 648         help
 649           Jump between original kernel and kexeced kernel and invoke
 650           code via KEXEC
 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         select USE_GENERIC_SMP_HELPERS
 672         ---help---
 673           This enables support for systems with more than one CPU. If you have
 674           a system with only one CPU, like most personal computers, say N. If
 675           you have a system with more than one CPU, say Y.
 676
 677           If you say N here, the kernel will run on single and multiprocessor
 678           machines, but will use only one CPU of a multiprocessor machine. If
 679           you say Y here, the kernel will run on many, but not all,
 680           singleprocessor machines. On a singleprocessor machine, the kernel
 681           will run faster if you say N here.
 682
 683           People using multiprocessor machines who say Y here should also say
 684           Y to "Enhanced Real Time Clock Support", below.
 685
 686           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 687           available at <http://www.tldp.org/docs.html#howto>.
 688
 689           If you don't know what to do here, say N.
 690
 691 config NR_CPUS
 692         int "Maximum number of CPUs (2-32)"
 693         range 2 32
 694         depends on SMP
 695         default "4" if CPU_SUBTYPE_SHX3
 696         default "2"
 697         help
 698           This allows you to specify the maximum number of CPUs which this
 699           kernel will support.  The maximum supported value is 32 and the
 700           minimum value which makes sense is 2.
 701
 702           This is purely to save memory - each supported CPU adds
 703           approximately eight kilobytes to the kernel image.
 704
 705 source "kernel/Kconfig.preempt"
 706
 707 config GUSA
 708         def_bool y
 709         depends on !SMP && SUPERH32
 710         help
 711           This enables support for gUSA (general UserSpace Atomicity).
 712           This is the default implementation for both UP and non-ll/sc
 713           CPUs, and is used by the libc, amongst others.
 714
 715           For additional information, design information can be found
 716           in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
 717
 718           This should only be disabled for special cases where alternate
 719           atomicity implementations exist.
 720
 721 config GUSA_RB
 722         bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
 723         depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
 724         help
 725           Enabling this option will allow the kernel to implement some
 726           atomic operations using a software implementation of load-locked/
 727           store-conditional (LLSC). On machines which do not have hardware
 728           LLSC, this should be more efficient than the other alternative of
 729           disabling interrupts around the atomic sequence.
 730
 731 config SPARSE_IRQ
 732         def_bool y
 733         depends on SUPERH32 && !SH_DREAMCAST && !SH_HIGHLANDER && \
 734                    !SH_RTS7751R2D && !HD64461 && !SH_7724_SOLUTION_ENGINE
 735         help
 736           This enables support for sparse irqs. This is useful in general
 737           as most CPUs have a fairly sparse array of IRQ vectors, which
 738           the irq_desc then maps directly on to. Systems with a high
 739           number of off-chip IRQs will want to treat this as
 740           experimental until they have been independently verified.
 741
 742           If you don't know what to do here, say N.
 743
 744 endmenu
 745
 746 menu "Boot options"
 747
 748 config ZERO_PAGE_OFFSET
 749         hex
 750         default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
 751                                 SH_7751_SOLUTION_ENGINE
 752         default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
 753         default "0x00002000" if PAGE_SIZE_8KB
 754         default "0x00001000"
 755         help
 756           This sets the default offset of zero page.
 757
 758 config BOOT_LINK_OFFSET
 759         hex
 760         default "0x00210000" if SH_SHMIN
 761         default "0x00400000" if SH_CAYMAN
 762         default "0x00810000" if SH_7780_SOLUTION_ENGINE
 763         default "0x009e0000" if SH_TITAN
 764         default "0x01800000" if SH_SDK7780
 765         default "0x02000000" if SH_EDOSK7760
 766         default "0x00800000"
 767         help
 768           This option allows you to set the link address offset of the zImage.
 769           This can be useful if you are on a board which has a small amount of
 770           memory.
 771
 772 config ENTRY_OFFSET
 773         hex
 774         default "0x00001000" if PAGE_SIZE_4KB
 775         default "0x00002000" if PAGE_SIZE_8KB
 776         default "0x00004000" if PAGE_SIZE_16KB
 777         default "0x00010000" if PAGE_SIZE_64KB
 778         default "0x00000000"
 779
 780 choice
 781         prompt "Kernel command line"
 782         optional
 783         default CMDLINE_OVERWRITE
 784         help
 785           Setting this option allows the kernel command line arguments
 786           to be set.
 787
 788 config CMDLINE_OVERWRITE
 789         bool "Overwrite bootloader kernel arguments"
 790         help
 791           Given string will overwrite any arguments passed in by
 792           a bootloader.
 793
 794 config CMDLINE_EXTEND
 795         bool "Extend bootloader kernel arguments"
 796         help
 797           Given string will be concatenated with arguments passed in
 798           by a bootloader.
 799
 800 endchoice
 801
 802 config CMDLINE
 803         string "Kernel command line arguments string"
 804         depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
 805         default "console=ttySC1,115200"
 806
 807 endmenu
 808
 809 menu "Bus options"
 810
 811 config SUPERHYWAY
 812         tristate "SuperHyway Bus support"
 813         depends on CPU_SUBTYPE_SH4_202
 814
 815 config MAPLE
 816         bool "Maple Bus support"
 817         depends on SH_DREAMCAST
 818         help
 819          The Maple Bus is SEGA's serial communication bus for peripherals
 820          on the Dreamcast. Without this bus support you won't be able to
 821          get your Dreamcast keyboard etc to work, so most users
 822          probably want to say 'Y' here, unless you are only using the
 823          Dreamcast with a serial line terminal or a remote network
 824          connection.
 825
 826 config PCI
 827         bool "PCI support"
 828         depends on SYS_SUPPORTS_PCI
 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 source "drivers/pci/pcie/Kconfig"
 835
 836 source "drivers/pci/Kconfig"
 837
 838 source "drivers/pcmcia/Kconfig"
 839
 840 source "drivers/pci/hotplug/Kconfig"
 841
 842 endmenu
 843
 844 menu "Executable file formats"
 845
 846 source "fs/Kconfig.binfmt"
 847
 848 endmenu
 849
 850 menu "Power management options (EXPERIMENTAL)"
 851 depends on EXPERIMENTAL
 852
 853 source "kernel/power/Kconfig"
 854
 855 source "drivers/cpuidle/Kconfig"
 856
 857 endmenu
 858
 859 source "net/Kconfig"
 860
 861 source "drivers/Kconfig"
 862
 863 source "fs/Kconfig"
 864
 865 source "arch/sh/Kconfig.debug"
 866
 867 source "security/Kconfig"
 868
 869 source "crypto/Kconfig"
 870
 871 source "lib/Kconfig"