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_IOREMAP_PROT if MMU
  17         select HAVE_ARCH_TRACEHOOK
  18         select HAVE_DMA_API_DEBUG
  19         select HAVE_DMA_ATTRS
  20         select HAVE_PERF_EVENTS
  21         select PERF_USE_VMALLOC
  22         select HAVE_KERNEL_GZIP
  23         select HAVE_KERNEL_BZIP2
  24         select HAVE_KERNEL_LZMA
  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_FUNCTION_TRACER
  39         select HAVE_FTRACE_MCOUNT_RECORD
  40         select HAVE_DYNAMIC_FTRACE
  41         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  42         select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
  43         select HAVE_FUNCTION_GRAPH_TRACER
  44         select HAVE_ARCH_KGDB
  45         select ARCH_HIBERNATION_POSSIBLE if MMU
  46
  47 config SUPERH64
  48         def_bool ARCH = "sh64"
  49
  50 config ARCH_DEFCONFIG
  51         string
  52         default "arch/sh/configs/shx3_defconfig" if SUPERH32
  53         default "arch/sh/configs/cayman_defconfig" if SUPERH64
  54
  55 config RWSEM_GENERIC_SPINLOCK
  56         def_bool y
  57
  58 config RWSEM_XCHGADD_ALGORITHM
  59         bool
  60
  61 config GENERIC_BUG
  62         def_bool y
  63         depends on BUG && SUPERH32
  64
  65 config GENERIC_CSUM
  66         def_bool y
  67         depends on SUPERH64
  68
  69 config GENERIC_FIND_NEXT_BIT
  70         def_bool y
  71
  72 config GENERIC_HWEIGHT
  73         def_bool y
  74
  75 config GENERIC_HARDIRQS
  76         def_bool y
  77
  78 config GENERIC_HARDIRQS_NO__DO_IRQ
  79         def_bool y
  80
  81 config GENERIC_IRQ_PROBE
  82         def_bool y
  83
  84 config IRQ_PER_CPU
  85         def_bool y
  86
  87 config GENERIC_GPIO
  88         def_bool n
  89
  90 config GENERIC_CALIBRATE_DELAY
  91         bool
  92
  93 config GENERIC_IOMAP
  94         bool
  95
  96 config GENERIC_TIME
  97         def_bool y
  98
  99 config GENERIC_CLOCKEVENTS
 100         def_bool y
 101
 102 config GENERIC_CLOCKEVENTS_BROADCAST
 103         bool
 104
 105 config GENERIC_CMOS_UPDATE
 106         def_bool y
 107         depends on SH_SH03 || SH_DREAMCAST
 108
 109 config GENERIC_LOCKBREAK
 110         def_bool y
 111         depends on SMP && PREEMPT
 112
 113 config SYS_SUPPORTS_PM
 114         bool
 115         depends on !SMP
 116
 117 config ARCH_SUSPEND_POSSIBLE
 118         def_bool n
 119
 120 config ARCH_HIBERNATION_POSSIBLE
 121         def_bool n
 122
 123 config SYS_SUPPORTS_APM_EMULATION
 124         bool
 125         select ARCH_SUSPEND_POSSIBLE
 126
 127 config SYS_SUPPORTS_HUGETLBFS
 128         bool
 129
 130 config SYS_SUPPORTS_SMP
 131         bool
 132
 133 config SYS_SUPPORTS_NUMA
 134         bool
 135
 136 config SYS_SUPPORTS_PCI
 137         bool
 138
 139 config SYS_SUPPORTS_CMT
 140         bool
 141
 142 config SYS_SUPPORTS_MTU2
 143         bool
 144
 145 config SYS_SUPPORTS_TMU
 146         bool
 147
 148 config STACKTRACE_SUPPORT
 149         def_bool y
 150
 151 config LOCKDEP_SUPPORT
 152         def_bool y
 153
 154 config HAVE_LATENCYTOP_SUPPORT
 155         def_bool y
 156         depends on !SMP
 157
 158 config ARCH_HAS_ILOG2_U32
 159         def_bool n
 160
 161 config ARCH_HAS_ILOG2_U64
 162         def_bool n
 163
 164 config ARCH_NO_VIRT_TO_BUS
 165         def_bool y
 166
 167 config ARCH_HAS_DEFAULT_IDLE
 168         def_bool y
 169
 170 config ARCH_HAS_CPU_IDLE_WAIT
 171         def_bool y
 172
 173 config IO_TRAPPED
 174         bool
 175
 176 config DMA_COHERENT
 177         bool
 178
 179 config DMA_NONCOHERENT
 180         def_bool !DMA_COHERENT
 181
 182 source "init/Kconfig"
 183
 184 source "kernel/Kconfig.freezer"
 185
 186 menu "System type"
 187
 188 #
 189 # Processor families
 190 #
 191 config CPU_SH2
 192         bool
 193
 194 config CPU_SH2A
 195         bool
 196         select CPU_SH2
 197
 198 config CPU_SH3
 199         bool
 200         select CPU_HAS_INTEVT
 201         select CPU_HAS_SR_RB
 202         select SYS_SUPPORTS_TMU
 203
 204 config CPU_SH4
 205         bool
 206         select CPU_HAS_INTEVT
 207         select CPU_HAS_SR_RB
 208         select CPU_HAS_FPU if !CPU_SH4AL_DSP
 209         select SYS_SUPPORTS_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_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
 234 config ARCH_SHMOBILE
 235         bool
 236         select ARCH_SUSPEND_POSSIBLE
 237         select PM
 238         select PM_RUNTIME
 239
 240 if SUPERH32
 241
 242 choice
 243         prompt "Processor sub-type selection"
 244
 245 #
 246 # Processor subtypes
 247 #
 248
 249 # SH-2 Processor Support
 250
 251 config CPU_SUBTYPE_SH7619
 252         bool "Support SH7619 processor"
 253         select CPU_SH2
 254         select SYS_SUPPORTS_CMT
 255
 256 # SH-2A Processor Support
 257
 258 config CPU_SUBTYPE_SH7201
 259         bool "Support SH7201 processor"
 260         select CPU_SH2A
 261         select CPU_HAS_FPU
 262         select SYS_SUPPORTS_MTU2
 263
 264 config CPU_SUBTYPE_SH7203
 265         bool "Support SH7203 processor"
 266         select CPU_SH2A
 267         select CPU_HAS_FPU
 268         select SYS_SUPPORTS_CMT
 269         select SYS_SUPPORTS_MTU2
 270
 271 config CPU_SUBTYPE_SH7206
 272         bool "Support SH7206 processor"
 273         select CPU_SH2A
 274         select SYS_SUPPORTS_CMT
 275         select SYS_SUPPORTS_MTU2
 276
 277 config CPU_SUBTYPE_SH7263
 278         bool "Support SH7263 processor"
 279         select CPU_SH2A
 280         select CPU_HAS_FPU
 281         select SYS_SUPPORTS_CMT
 282         select SYS_SUPPORTS_MTU2
 283
 284 config CPU_SUBTYPE_MXG
 285         bool "Support MX-G processor"
 286         select CPU_SH2A
 287         select SYS_SUPPORTS_MTU2
 288         help
 289           Select MX-G if running on an R8A03022BG part.
 290
 291 # SH-3 Processor Support
 292
 293 config CPU_SUBTYPE_SH7705
 294         bool "Support SH7705 processor"
 295         select CPU_SH3
 296
 297 config CPU_SUBTYPE_SH7706
 298         bool "Support SH7706 processor"
 299         select CPU_SH3
 300         help
 301           Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
 302
 303 config CPU_SUBTYPE_SH7707
 304         bool "Support SH7707 processor"
 305         select CPU_SH3
 306         help
 307           Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
 308
 309 config CPU_SUBTYPE_SH7708
 310         bool "Support SH7708 processor"
 311         select CPU_SH3
 312         help
 313           Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
 314           if you have a 100 Mhz SH-3 HD6417708R CPU.
 315
 316 config CPU_SUBTYPE_SH7709
 317         bool "Support SH7709 processor"
 318         select CPU_SH3
 319         help
 320           Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
 321
 322 config CPU_SUBTYPE_SH7710
 323         bool "Support SH7710 processor"
 324         select CPU_SH3
 325         select CPU_HAS_DSP
 326         help
 327           Select SH7710 if you have a SH3-DSP SH7710 CPU.
 328
 329 config CPU_SUBTYPE_SH7712
 330         bool "Support SH7712 processor"
 331         select CPU_SH3
 332         select CPU_HAS_DSP
 333         help
 334           Select SH7712 if you have a SH3-DSP SH7712 CPU.
 335
 336 config CPU_SUBTYPE_SH7720
 337         bool "Support SH7720 processor"
 338         select CPU_SH3
 339         select CPU_HAS_DSP
 340         select SYS_SUPPORTS_CMT
 341         help
 342           Select SH7720 if you have a SH3-DSP SH7720 CPU.
 343
 344 config CPU_SUBTYPE_SH7721
 345         bool "Support SH7721 processor"
 346         select CPU_SH3
 347         select CPU_HAS_DSP
 348         select SYS_SUPPORTS_CMT
 349         help
 350           Select SH7721 if you have a SH3-DSP SH7721 CPU.
 351
 352 # SH-4 Processor Support
 353
 354 config CPU_SUBTYPE_SH7750
 355         bool "Support SH7750 processor"
 356         select CPU_SH4
 357         help
 358           Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
 359
 360 config CPU_SUBTYPE_SH7091
 361         bool "Support SH7091 processor"
 362         select CPU_SH4
 363         help
 364           Select SH7091 if you have an SH-4 based Sega device (such as
 365           the Dreamcast, Naomi, and Naomi 2).
 366
 367 config CPU_SUBTYPE_SH7750R
 368         bool "Support SH7750R processor"
 369         select CPU_SH4
 370
 371 config CPU_SUBTYPE_SH7750S
 372         bool "Support SH7750S processor"
 373         select CPU_SH4
 374
 375 config CPU_SUBTYPE_SH7751
 376         bool "Support SH7751 processor"
 377         select CPU_SH4
 378         help
 379           Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
 380           or if you have a HD6417751R CPU.
 381
 382 config CPU_SUBTYPE_SH7751R
 383         bool "Support SH7751R processor"
 384         select CPU_SH4
 385
 386 config CPU_SUBTYPE_SH7760
 387         bool "Support SH7760 processor"
 388         select CPU_SH4
 389
 390 config CPU_SUBTYPE_SH4_202
 391         bool "Support SH4-202 processor"
 392         select CPU_SH4
 393
 394 # SH-4A Processor Support
 395
 396 config CPU_SUBTYPE_SH7723
 397         bool "Support SH7723 processor"
 398         select CPU_SH4A
 399         select CPU_SHX2
 400         select ARCH_SHMOBILE
 401         select ARCH_SPARSEMEM_ENABLE
 402         select SYS_SUPPORTS_CMT
 403         help
 404           Select SH7723 if you have an SH-MobileR2 CPU.
 405
 406 config CPU_SUBTYPE_SH7724
 407         bool "Support SH7724 processor"
 408         select CPU_SH4A
 409         select CPU_SHX2
 410         select ARCH_SHMOBILE
 411         select ARCH_SPARSEMEM_ENABLE
 412         select SYS_SUPPORTS_CMT
 413         help
 414           Select SH7724 if you have an SH-MobileR2R CPU.
 415
 416 config CPU_SUBTYPE_SH7757
 417         bool "Support SH7757 processor"
 418         select CPU_SH4A
 419         select CPU_SHX2
 420         help
 421           Select SH7757 if you have a SH4A SH7757 CPU.
 422
 423 config CPU_SUBTYPE_SH7763
 424         bool "Support SH7763 processor"
 425         select CPU_SH4A
 426         help
 427           Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
 428
 429 config CPU_SUBTYPE_SH7770
 430         bool "Support SH7770 processor"
 431         select CPU_SH4A
 432
 433 config CPU_SUBTYPE_SH7780
 434         bool "Support SH7780 processor"
 435         select CPU_SH4A
 436
 437 config CPU_SUBTYPE_SH7785
 438         bool "Support SH7785 processor"
 439         select CPU_SH4A
 440         select CPU_SHX2
 441         select ARCH_SPARSEMEM_ENABLE
 442         select SYS_SUPPORTS_NUMA
 443
 444 config CPU_SUBTYPE_SH7786
 445         bool "Support SH7786 processor"
 446         select CPU_SH4A
 447         select CPU_SHX3
 448         select CPU_HAS_PTEAEX
 449         select ARCH_SPARSEMEM_ENABLE
 450         select SYS_SUPPORTS_NUMA
 451         select SYS_SUPPORTS_SMP
 452         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 453
 454 config CPU_SUBTYPE_SHX3
 455         bool "Support SH-X3 processor"
 456         select CPU_SH4A
 457         select CPU_SHX3
 458         select ARCH_SPARSEMEM_ENABLE
 459         select SYS_SUPPORTS_NUMA
 460         select SYS_SUPPORTS_SMP
 461         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 462
 463 # SH4AL-DSP Processor Support
 464
 465 config CPU_SUBTYPE_SH7343
 466         bool "Support SH7343 processor"
 467         select CPU_SH4AL_DSP
 468         select ARCH_SHMOBILE
 469         select SYS_SUPPORTS_CMT
 470
 471 config CPU_SUBTYPE_SH7722
 472         bool "Support SH7722 processor"
 473         select CPU_SH4AL_DSP
 474         select CPU_SHX2
 475         select ARCH_SHMOBILE
 476         select ARCH_SPARSEMEM_ENABLE
 477         select SYS_SUPPORTS_NUMA
 478         select SYS_SUPPORTS_CMT
 479
 480 config CPU_SUBTYPE_SH7366
 481         bool "Support SH7366 processor"
 482         select CPU_SH4AL_DSP
 483         select CPU_SHX2
 484         select ARCH_SHMOBILE
 485         select ARCH_SPARSEMEM_ENABLE
 486         select SYS_SUPPORTS_NUMA
 487         select SYS_SUPPORTS_CMT
 488
 489 endchoice
 490
 491 endif
 492
 493 if SUPERH64
 494
 495 choice
 496         prompt "Processor sub-type selection"
 497
 498 # SH-5 Processor Support
 499
 500 config CPU_SUBTYPE_SH5_101
 501         bool "Support SH5-101 processor"
 502         select CPU_SH5
 503
 504 config CPU_SUBTYPE_SH5_103
 505         bool "Support SH5-103 processor"
 506         select CPU_SH5
 507
 508 endchoice
 509
 510 endif
 511
 512 source "arch/sh/mm/Kconfig"
 513
 514 source "arch/sh/Kconfig.cpu"
 515
 516 source "arch/sh/boards/Kconfig"
 517
 518 menu "Timer and clock configuration"
 519
 520 config SH_TIMER_TMU
 521         bool "TMU timer driver"
 522         depends on SYS_SUPPORTS_TMU
 523         default y
 524         help
 525           This enables the build of the TMU timer driver.
 526
 527 config SH_TIMER_CMT
 528         bool "CMT timer driver"
 529         depends on SYS_SUPPORTS_CMT
 530         default y
 531         help
 532           This enables build of the CMT timer driver.
 533
 534 config SH_TIMER_MTU2
 535         bool "MTU2 timer driver"
 536         depends on SYS_SUPPORTS_MTU2
 537         default y
 538         help
 539           This enables build of the MTU2 timer driver.
 540
 541 config SH_PCLK_FREQ
 542         int "Peripheral clock frequency (in Hz)"
 543         depends on SH_CLK_CPG_LEGACY
 544         default "31250000" if CPU_SUBTYPE_SH7619
 545         default "33333333" if CPU_SUBTYPE_SH7770 || \
 546                               CPU_SUBTYPE_SH7760 || \
 547                               CPU_SUBTYPE_SH7705 || \
 548                               CPU_SUBTYPE_SH7203 || \
 549                               CPU_SUBTYPE_SH7206 || \
 550                               CPU_SUBTYPE_SH7263 || \
 551                               CPU_SUBTYPE_MXG    || \
 552                               CPU_SUBTYPE_SH7786
 553         default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
 554         default "66000000" if CPU_SUBTYPE_SH4_202
 555         default "50000000"
 556         help
 557           This option is used to specify the peripheral clock frequency.
 558           This is necessary for determining the reference clock value on
 559           platforms lacking an RTC.
 560
 561 config SH_CLK_CPG
 562         def_bool y
 563
 564 config SH_CLK_CPG_LEGACY
 565         depends on SH_CLK_CPG
 566         def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE
 567
 568 config SH_CLK_MD
 569         int "CPU Mode Pin Setting"
 570         depends on CPU_SH2
 571         default 6 if CPU_SUBTYPE_SH7206
 572         default 5 if CPU_SUBTYPE_SH7619
 573         default 0
 574         help
 575           MD2 - MD0 pin setting.
 576
 577 source "kernel/time/Kconfig"
 578
 579 endmenu
 580
 581 menu "CPU Frequency scaling"
 582
 583 source "drivers/cpufreq/Kconfig"
 584
 585 config SH_CPU_FREQ
 586         tristate "SuperH CPU Frequency driver"
 587         depends on CPU_FREQ
 588         select CPU_FREQ_TABLE
 589         help
 590           This adds the cpufreq driver for SuperH. Any CPU that supports
 591           clock rate rounding through the clock framework can use this
 592           driver. While it will make the kernel slightly larger, this is
 593           harmless for CPUs that don't support rate rounding. The driver
 594           will also generate a notice in the boot log before disabling
 595           itself if the CPU in question is not capable of rate rounding.
 596
 597           For details, take a look at <file:Documentation/cpu-freq>.
 598
 599           If unsure, say N.
 600
 601 endmenu
 602
 603 source "arch/sh/drivers/Kconfig"
 604
 605 endmenu
 606
 607 menu "Kernel features"
 608
 609 source kernel/Kconfig.hz
 610
 611 config KEXEC
 612         bool "kexec system call (EXPERIMENTAL)"
 613         depends on SUPERH32 && EXPERIMENTAL && MMU
 614         help
 615           kexec is a system call that implements the ability to shutdown your
 616           current kernel, and to start another kernel.  It is like a reboot
 617           but it is independent of the system firmware.  And like a reboot
 618           you can start any kernel with it, not just Linux.
 619
 620           The name comes from the similarity to the exec system call.
 621
 622           It is an ongoing process to be certain the hardware in a machine
 623           is properly shutdown, so do not be surprised if this code does not
 624           initially work for you.  It may help to enable device hotplugging
 625           support.  As of this writing the exact hardware interface is
 626           strongly in flux, so no good recommendation can be made.
 627
 628 config CRASH_DUMP
 629         bool "kernel crash dumps (EXPERIMENTAL)"
 630         depends on SUPERH32 && EXPERIMENTAL
 631         help
 632           Generate crash dump after being started by kexec.
 633           This should be normally only set in special crash dump kernels
 634           which are loaded in the main kernel with kexec-tools into
 635           a specially reserved region and then later executed after
 636           a crash by kdump/kexec. The crash dump kernel must be compiled
 637           to a memory address not used by the main kernel using
 638           MEMORY_START.
 639
 640           For more details see Documentation/kdump/kdump.txt
 641
 642 config KEXEC_JUMP
 643         bool "kexec jump (EXPERIMENTAL)"
 644         depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
 645         help
 646           Jump between original kernel and kexeced kernel and invoke
 647           code via KEXEC
 648
 649 config SECCOMP
 650         bool "Enable seccomp to safely compute untrusted bytecode"
 651         depends on PROC_FS
 652         help
 653           This kernel feature is useful for number crunching applications
 654           that may need to compute untrusted bytecode during their
 655           execution. By using pipes or other transports made available to
 656           the process as file descriptors supporting the read/write
 657           syscalls, it's possible to isolate those applications in
 658           their own address space using seccomp. Once seccomp is
 659           enabled via prctl, it cannot be disabled and the task is only
 660           allowed to execute a few safe syscalls defined by each seccomp
 661           mode.
 662
 663           If unsure, say N.
 664
 665 config SMP
 666         bool "Symmetric multi-processing support"
 667         depends on SYS_SUPPORTS_SMP
 668         select USE_GENERIC_SMP_HELPERS
 669         ---help---
 670           This enables support for systems with more than one CPU. If you have
 671           a system with only one CPU, like most personal computers, say N. If
 672           you have a system with more than one CPU, say Y.
 673
 674           If you say N here, the kernel will run on single and multiprocessor
 675           machines, but will use only one CPU of a multiprocessor machine. If
 676           you say Y here, the kernel will run on many, but not all,
 677           singleprocessor machines. On a singleprocessor machine, the kernel
 678           will run faster if you say N here.
 679
 680           People using multiprocessor machines who say Y here should also say
 681           Y to "Enhanced Real Time Clock Support", below.
 682
 683           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 684           available at <http://www.tldp.org/docs.html#howto>.
 685
 686           If you don't know what to do here, say N.
 687
 688 config NR_CPUS
 689         int "Maximum number of CPUs (2-32)"
 690         range 2 32
 691         depends on SMP
 692         default "4" if CPU_SUBTYPE_SHX3
 693         default "2"
 694         help
 695           This allows you to specify the maximum number of CPUs which this
 696           kernel will support.  The maximum supported value is 32 and the
 697           minimum value which makes sense is 2.
 698
 699           This is purely to save memory - each supported CPU adds
 700           approximately eight kilobytes to the kernel image.
 701
 702 source "kernel/Kconfig.preempt"
 703
 704 config GUSA
 705         def_bool y
 706         depends on !SMP && SUPERH32
 707         help
 708           This enables support for gUSA (general UserSpace Atomicity).
 709           This is the default implementation for both UP and non-ll/sc
 710           CPUs, and is used by the libc, amongst others.
 711
 712           For additional information, design information can be found
 713           in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
 714
 715           This should only be disabled for special cases where alternate
 716           atomicity implementations exist.
 717
 718 config GUSA_RB
 719         bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
 720         depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
 721         help
 722           Enabling this option will allow the kernel to implement some
 723           atomic operations using a software implementation of load-locked/
 724           store-conditional (LLSC). On machines which do not have hardware
 725           LLSC, this should be more efficient than the other alternative of
 726           disabling interrupts around the atomic sequence.
 727
 728 config SPARSE_IRQ
 729         bool "Support sparse irq numbering"
 730         depends on EXPERIMENTAL
 731         help
 732           This enables support for sparse irqs. This is useful in general
 733           as most CPUs have a fairly sparse array of IRQ vectors, which
 734           the irq_desc then maps directly on to. Systems with a high
 735           number of off-chip IRQs will want to treat this as
 736           experimental until they have been independently verified.
 737
 738           If you don't know what to do here, say N.
 739
 740 endmenu
 741
 742 menu "Boot options"
 743
 744 config ZERO_PAGE_OFFSET
 745         hex
 746         default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
 747                                 SH_7751_SOLUTION_ENGINE
 748         default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
 749         default "0x00002000" if PAGE_SIZE_8KB
 750         default "0x00001000"
 751         help
 752           This sets the default offset of zero page.
 753
 754 config BOOT_LINK_OFFSET
 755         hex
 756         default "0x00210000" if SH_SHMIN
 757         default "0x00400000" if SH_CAYMAN
 758         default "0x00810000" if SH_7780_SOLUTION_ENGINE
 759         default "0x009e0000" if SH_TITAN
 760         default "0x01800000" if SH_SDK7780
 761         default "0x02000000" if SH_EDOSK7760
 762         default "0x00800000"
 763         help
 764           This option allows you to set the link address offset of the zImage.
 765           This can be useful if you are on a board which has a small amount of
 766           memory.
 767
 768 config ENTRY_OFFSET
 769         hex
 770         default "0x00001000" if PAGE_SIZE_4KB
 771         default "0x00002000" if PAGE_SIZE_8KB
 772         default "0x00004000" if PAGE_SIZE_16KB
 773         default "0x00010000" if PAGE_SIZE_64KB
 774         default "0x00000000"
 775
 776 choice
 777         prompt "Kernel command line"
 778         optional
 779         default CMDLINE_OVERWRITE
 780         help
 781           Setting this option allows the kernel command line arguments
 782           to be set.
 783
 784 config CMDLINE_OVERWRITE
 785         bool "Overwrite bootloader kernel arguments"
 786         help
 787           Given string will overwrite any arguments passed in by
 788           a bootloader.
 789
 790 config CMDLINE_EXTEND
 791         bool "Extend bootloader kernel arguments"
 792         help
 793           Given string will be concatenated with arguments passed in
 794           by a bootloader.
 795
 796 endchoice
 797
 798 config CMDLINE
 799         string "Kernel command line arguments string"
 800         depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
 801         default "console=ttySC1,115200"
 802
 803 endmenu
 804
 805 menu "Bus options"
 806
 807 config SUPERHYWAY
 808         tristate "SuperHyway Bus support"
 809         depends on CPU_SUBTYPE_SH4_202
 810
 811 config MAPLE
 812         bool "Maple Bus support"
 813         depends on SH_DREAMCAST
 814         help
 815          The Maple Bus is SEGA's serial communication bus for peripherals
 816          on the Dreamcast. Without this bus support you won't be able to
 817          get your Dreamcast keyboard etc to work, so most users
 818          probably want to say 'Y' here, unless you are only using the
 819          Dreamcast with a serial line terminal or a remote network
 820          connection.
 821
 822 config PCI
 823         bool "PCI support"
 824         depends on SYS_SUPPORTS_PCI
 825         help
 826           Find out whether you have a PCI motherboard. PCI is the name of a
 827           bus system, i.e. the way the CPU talks to the other stuff inside
 828           your box. If you have PCI, say Y, otherwise N.
 829
 830 source "drivers/pci/pcie/Kconfig"
 831
 832 source "drivers/pci/Kconfig"
 833
 834 source "drivers/pcmcia/Kconfig"
 835
 836 source "drivers/pci/hotplug/Kconfig"
 837
 838 endmenu
 839
 840 menu "Executable file formats"
 841
 842 source "fs/Kconfig.binfmt"
 843
 844 endmenu
 845
 846 menu "Power management options (EXPERIMENTAL)"
 847 depends on EXPERIMENTAL
 848
 849 source "kernel/power/Kconfig"
 850
 851 source "drivers/cpuidle/Kconfig"
 852
 853 endmenu
 854
 855 source "net/Kconfig"
 856
 857 source "drivers/Kconfig"
 858
 859 source "fs/Kconfig"
 860
 861 source "arch/sh/Kconfig.debug"
 862
 863 source "security/Kconfig"
 864
 865 source "crypto/Kconfig"
 866
 867 source "lib/Kconfig"