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 IRQ_PER_CPU
  85         def_bool y
  86
  87 config SPARSE_IRQ
  88         def_bool y
  89         depends on SUPERH32
  90
  91 config GENERIC_GPIO
  92         def_bool n
  93
  94 config GENERIC_CALIBRATE_DELAY
  95         bool
  96
  97 config GENERIC_IOMAP
  98         bool
  99
 100 config GENERIC_TIME
 101         def_bool y
 102
 103 config GENERIC_CLOCKEVENTS
 104         def_bool y
 105
 106 config GENERIC_CLOCKEVENTS_BROADCAST
 107         bool
 108
 109 config GENERIC_CMOS_UPDATE
 110         def_bool y
 111         depends on SH_SH03 || SH_DREAMCAST
 112
 113 config GENERIC_LOCKBREAK
 114         def_bool y
 115         depends on SMP && PREEMPT
 116
 117 config SYS_SUPPORTS_PM
 118         bool
 119         depends on !SMP
 120
 121 config ARCH_SUSPEND_POSSIBLE
 122         def_bool n
 123
 124 config ARCH_HIBERNATION_POSSIBLE
 125         def_bool n
 126
 127 config SYS_SUPPORTS_APM_EMULATION
 128         bool
 129         select ARCH_SUSPEND_POSSIBLE
 130
 131 config SYS_SUPPORTS_HUGETLBFS
 132         bool
 133
 134 config SYS_SUPPORTS_SMP
 135         bool
 136
 137 config SYS_SUPPORTS_NUMA
 138         bool
 139
 140 config SYS_SUPPORTS_PCI
 141         bool
 142
 143 config SYS_SUPPORTS_CMT
 144         bool
 145
 146 config SYS_SUPPORTS_MTU2
 147         bool
 148
 149 config SYS_SUPPORTS_TMU
 150         bool
 151
 152 config STACKTRACE_SUPPORT
 153         def_bool y
 154
 155 config LOCKDEP_SUPPORT
 156         def_bool y
 157
 158 config HAVE_LATENCYTOP_SUPPORT
 159         def_bool y
 160         depends on !SMP
 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 source "init/Kconfig"
 190
 191 source "kernel/Kconfig.freezer"
 192
 193 menu "System type"
 194
 195 #
 196 # Processor families
 197 #
 198 config CPU_SH2
 199         bool
 200
 201 config CPU_SH2A
 202         bool
 203         select CPU_SH2
 204
 205 config CPU_SH3
 206         bool
 207         select CPU_HAS_INTEVT
 208         select CPU_HAS_SR_RB
 209         select SYS_SUPPORTS_TMU
 210
 211 config CPU_SH4
 212         bool
 213         select CPU_HAS_INTEVT
 214         select CPU_HAS_SR_RB
 215         select CPU_HAS_FPU if !CPU_SH4AL_DSP
 216         select SYS_SUPPORTS_TMU
 217         select SYS_SUPPORTS_HUGETLBFS if MMU
 218
 219 config CPU_SH4A
 220         bool
 221         select CPU_SH4
 222
 223 config CPU_SH4AL_DSP
 224         bool
 225         select CPU_SH4A
 226         select CPU_HAS_DSP
 227
 228 config CPU_SH5
 229         bool
 230         select CPU_HAS_FPU
 231         select SYS_SUPPORTS_TMU
 232         select SYS_SUPPORTS_HUGETLBFS if MMU
 233
 234 config CPU_SHX2
 235         bool
 236
 237 config CPU_SHX3
 238         bool
 239         select DMA_COHERENT
 240
 241 config ARCH_SHMOBILE
 242         bool
 243         select ARCH_SUSPEND_POSSIBLE
 244         select PM
 245         select PM_RUNTIME
 246
 247 if SUPERH32
 248
 249 choice
 250         prompt "Processor sub-type selection"
 251
 252 #
 253 # Processor subtypes
 254 #
 255
 256 # SH-2 Processor Support
 257
 258 config CPU_SUBTYPE_SH7619
 259         bool "Support SH7619 processor"
 260         select CPU_SH2
 261         select SYS_SUPPORTS_CMT
 262
 263 # SH-2A Processor Support
 264
 265 config CPU_SUBTYPE_SH7201
 266         bool "Support SH7201 processor"
 267         select CPU_SH2A
 268         select CPU_HAS_FPU
 269         select SYS_SUPPORTS_MTU2
 270
 271 config CPU_SUBTYPE_SH7203
 272         bool "Support SH7203 processor"
 273         select CPU_SH2A
 274         select CPU_HAS_FPU
 275         select SYS_SUPPORTS_CMT
 276         select SYS_SUPPORTS_MTU2
 277
 278 config CPU_SUBTYPE_SH7206
 279         bool "Support SH7206 processor"
 280         select CPU_SH2A
 281         select SYS_SUPPORTS_CMT
 282         select SYS_SUPPORTS_MTU2
 283
 284 config CPU_SUBTYPE_SH7263
 285         bool "Support SH7263 processor"
 286         select CPU_SH2A
 287         select CPU_HAS_FPU
 288         select SYS_SUPPORTS_CMT
 289         select SYS_SUPPORTS_MTU2
 290
 291 config CPU_SUBTYPE_MXG
 292         bool "Support MX-G processor"
 293         select CPU_SH2A
 294         select SYS_SUPPORTS_MTU2
 295         help
 296           Select MX-G if running on an R8A03022BG part.
 297
 298 # SH-3 Processor Support
 299
 300 config CPU_SUBTYPE_SH7705
 301         bool "Support SH7705 processor"
 302         select CPU_SH3
 303
 304 config CPU_SUBTYPE_SH7706
 305         bool "Support SH7706 processor"
 306         select CPU_SH3
 307         help
 308           Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
 309
 310 config CPU_SUBTYPE_SH7707
 311         bool "Support SH7707 processor"
 312         select CPU_SH3
 313         help
 314           Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
 315
 316 config CPU_SUBTYPE_SH7708
 317         bool "Support SH7708 processor"
 318         select CPU_SH3
 319         help
 320           Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
 321           if you have a 100 Mhz SH-3 HD6417708R CPU.
 322
 323 config CPU_SUBTYPE_SH7709
 324         bool "Support SH7709 processor"
 325         select CPU_SH3
 326         help
 327           Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
 328
 329 config CPU_SUBTYPE_SH7710
 330         bool "Support SH7710 processor"
 331         select CPU_SH3
 332         select CPU_HAS_DSP
 333         help
 334           Select SH7710 if you have a SH3-DSP SH7710 CPU.
 335
 336 config CPU_SUBTYPE_SH7712
 337         bool "Support SH7712 processor"
 338         select CPU_SH3
 339         select CPU_HAS_DSP
 340         help
 341           Select SH7712 if you have a SH3-DSP SH7712 CPU.
 342
 343 config CPU_SUBTYPE_SH7720
 344         bool "Support SH7720 processor"
 345         select CPU_SH3
 346         select CPU_HAS_DSP
 347         select SYS_SUPPORTS_CMT
 348         help
 349           Select SH7720 if you have a SH3-DSP SH7720 CPU.
 350
 351 config CPU_SUBTYPE_SH7721
 352         bool "Support SH7721 processor"
 353         select CPU_SH3
 354         select CPU_HAS_DSP
 355         select SYS_SUPPORTS_CMT
 356         help
 357           Select SH7721 if you have a SH3-DSP SH7721 CPU.
 358
 359 # SH-4 Processor Support
 360
 361 config CPU_SUBTYPE_SH7750
 362         bool "Support SH7750 processor"
 363         select CPU_SH4
 364         help
 365           Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
 366
 367 config CPU_SUBTYPE_SH7091
 368         bool "Support SH7091 processor"
 369         select CPU_SH4
 370         help
 371           Select SH7091 if you have an SH-4 based Sega device (such as
 372           the Dreamcast, Naomi, and Naomi 2).
 373
 374 config CPU_SUBTYPE_SH7750R
 375         bool "Support SH7750R processor"
 376         select CPU_SH4
 377
 378 config CPU_SUBTYPE_SH7750S
 379         bool "Support SH7750S processor"
 380         select CPU_SH4
 381
 382 config CPU_SUBTYPE_SH7751
 383         bool "Support SH7751 processor"
 384         select CPU_SH4
 385         help
 386           Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
 387           or if you have a HD6417751R CPU.
 388
 389 config CPU_SUBTYPE_SH7751R
 390         bool "Support SH7751R processor"
 391         select CPU_SH4
 392
 393 config CPU_SUBTYPE_SH7760
 394         bool "Support SH7760 processor"
 395         select CPU_SH4
 396
 397 config CPU_SUBTYPE_SH4_202
 398         bool "Support SH4-202 processor"
 399         select CPU_SH4
 400
 401 # SH-4A Processor Support
 402
 403 config CPU_SUBTYPE_SH7723
 404         bool "Support SH7723 processor"
 405         select CPU_SH4A
 406         select CPU_SHX2
 407         select ARCH_SHMOBILE
 408         select ARCH_SPARSEMEM_ENABLE
 409         select SYS_SUPPORTS_CMT
 410         help
 411           Select SH7723 if you have an SH-MobileR2 CPU.
 412
 413 config CPU_SUBTYPE_SH7724
 414         bool "Support SH7724 processor"
 415         select CPU_SH4A
 416         select CPU_SHX2
 417         select ARCH_SHMOBILE
 418         select ARCH_SPARSEMEM_ENABLE
 419         select SYS_SUPPORTS_CMT
 420         help
 421           Select SH7724 if you have an SH-MobileR2R CPU.
 422
 423 config CPU_SUBTYPE_SH7757
 424         bool "Support SH7757 processor"
 425         select CPU_SH4A
 426         select CPU_SHX2
 427         help
 428           Select SH7757 if you have a SH4A SH7757 CPU.
 429
 430 config CPU_SUBTYPE_SH7763
 431         bool "Support SH7763 processor"
 432         select CPU_SH4A
 433         help
 434           Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
 435
 436 config CPU_SUBTYPE_SH7770
 437         bool "Support SH7770 processor"
 438         select CPU_SH4A
 439
 440 config CPU_SUBTYPE_SH7780
 441         bool "Support SH7780 processor"
 442         select CPU_SH4A
 443
 444 config CPU_SUBTYPE_SH7785
 445         bool "Support SH7785 processor"
 446         select CPU_SH4A
 447         select CPU_SHX2
 448         select ARCH_SPARSEMEM_ENABLE
 449         select SYS_SUPPORTS_NUMA
 450
 451 config CPU_SUBTYPE_SH7786
 452         bool "Support SH7786 processor"
 453         select CPU_SH4A
 454         select CPU_SHX3
 455         select CPU_HAS_PTEAEX
 456         select ARCH_SPARSEMEM_ENABLE
 457         select SYS_SUPPORTS_NUMA
 458         select SYS_SUPPORTS_SMP
 459         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 460
 461 config CPU_SUBTYPE_SHX3
 462         bool "Support SH-X3 processor"
 463         select CPU_SH4A
 464         select CPU_SHX3
 465         select ARCH_SPARSEMEM_ENABLE
 466         select SYS_SUPPORTS_NUMA
 467         select SYS_SUPPORTS_SMP
 468         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 469
 470 # SH4AL-DSP Processor Support
 471
 472 config CPU_SUBTYPE_SH7343
 473         bool "Support SH7343 processor"
 474         select CPU_SH4AL_DSP
 475         select ARCH_SHMOBILE
 476         select SYS_SUPPORTS_CMT
 477
 478 config CPU_SUBTYPE_SH7722
 479         bool "Support SH7722 processor"
 480         select CPU_SH4AL_DSP
 481         select CPU_SHX2
 482         select ARCH_SHMOBILE
 483         select ARCH_SPARSEMEM_ENABLE
 484         select SYS_SUPPORTS_NUMA
 485         select SYS_SUPPORTS_CMT
 486
 487 config CPU_SUBTYPE_SH7366
 488         bool "Support SH7366 processor"
 489         select CPU_SH4AL_DSP
 490         select CPU_SHX2
 491         select ARCH_SHMOBILE
 492         select ARCH_SPARSEMEM_ENABLE
 493         select SYS_SUPPORTS_NUMA
 494         select SYS_SUPPORTS_CMT
 495
 496 endchoice
 497
 498 endif
 499
 500 if SUPERH64
 501
 502 choice
 503         prompt "Processor sub-type selection"
 504
 505 # SH-5 Processor Support
 506
 507 config CPU_SUBTYPE_SH5_101
 508         bool "Support SH5-101 processor"
 509         select CPU_SH5
 510
 511 config CPU_SUBTYPE_SH5_103
 512         bool "Support SH5-103 processor"
 513         select CPU_SH5
 514
 515 endchoice
 516
 517 endif
 518
 519 source "arch/sh/mm/Kconfig"
 520
 521 source "arch/sh/Kconfig.cpu"
 522
 523 source "arch/sh/boards/Kconfig"
 524
 525 menu "Timer and clock configuration"
 526
 527 config SH_TIMER_TMU
 528         bool "TMU timer driver"
 529         depends on SYS_SUPPORTS_TMU
 530         default y
 531         help
 532           This enables the build of the TMU timer driver.
 533
 534 config SH_TIMER_CMT
 535         bool "CMT timer driver"
 536         depends on SYS_SUPPORTS_CMT
 537         default y
 538         help
 539           This enables build of the CMT timer driver.
 540
 541 config SH_TIMER_MTU2
 542         bool "MTU2 timer driver"
 543         depends on SYS_SUPPORTS_MTU2
 544         default y
 545         help
 546           This enables build of the MTU2 timer driver.
 547
 548 config SH_PCLK_FREQ
 549         int "Peripheral clock frequency (in Hz)"
 550         depends on SH_CLK_CPG_LEGACY
 551         default "31250000" if CPU_SUBTYPE_SH7619
 552         default "33333333" if CPU_SUBTYPE_SH7770 || \
 553                               CPU_SUBTYPE_SH7760 || \
 554                               CPU_SUBTYPE_SH7705 || \
 555                               CPU_SUBTYPE_SH7203 || \
 556                               CPU_SUBTYPE_SH7206 || \
 557                               CPU_SUBTYPE_SH7263 || \
 558                               CPU_SUBTYPE_MXG
 559         default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
 560         default "66000000" if CPU_SUBTYPE_SH4_202
 561         default "50000000"
 562         help
 563           This option is used to specify the peripheral clock frequency.
 564           This is necessary for determining the reference clock value on
 565           platforms lacking an RTC.
 566
 567 config SH_CLK_CPG
 568         def_bool y
 569
 570 config SH_CLK_CPG_LEGACY
 571         depends on SH_CLK_CPG
 572         def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
 573                       !CPU_SUBTYPE_SH7786
 574
 575 config SH_CLK_MD
 576         int "CPU Mode Pin Setting"
 577         depends on CPU_SH2
 578         default 6 if CPU_SUBTYPE_SH7206
 579         default 5 if CPU_SUBTYPE_SH7619
 580         default 0
 581         help
 582           MD2 - MD0 pin setting.
 583
 584 source "kernel/time/Kconfig"
 585
 586 endmenu
 587
 588 menu "CPU Frequency scaling"
 589
 590 source "drivers/cpufreq/Kconfig"
 591
 592 config SH_CPU_FREQ
 593         tristate "SuperH CPU Frequency driver"
 594         depends on CPU_FREQ
 595         select CPU_FREQ_TABLE
 596         help
 597           This adds the cpufreq driver for SuperH. Any CPU that supports
 598           clock rate rounding through the clock framework can use this
 599           driver. While it will make the kernel slightly larger, this is
 600           harmless for CPUs that don't support rate rounding. The driver
 601           will also generate a notice in the boot log before disabling
 602           itself if the CPU in question is not capable of rate rounding.
 603
 604           For details, take a look at <file:Documentation/cpu-freq>.
 605
 606           If unsure, say N.
 607
 608 endmenu
 609
 610 source "arch/sh/drivers/Kconfig"
 611
 612 endmenu
 613
 614 menu "Kernel features"
 615
 616 source kernel/Kconfig.hz
 617
 618 config KEXEC
 619         bool "kexec system call (EXPERIMENTAL)"
 620         depends on SUPERH32 && EXPERIMENTAL && MMU
 621         help
 622           kexec is a system call that implements the ability to shutdown your
 623           current kernel, and to start another kernel.  It is like a reboot
 624           but it is independent of the system firmware.  And like a reboot
 625           you can start any kernel with it, not just Linux.
 626
 627           The name comes from the similarity to the exec system call.
 628
 629           It is an ongoing process to be certain the hardware in a machine
 630           is properly shutdown, so do not be surprised if this code does not
 631           initially work for you.  It may help to enable device hotplugging
 632           support.  As of this writing the exact hardware interface is
 633           strongly in flux, so no good recommendation can be made.
 634
 635 config CRASH_DUMP
 636         bool "kernel crash dumps (EXPERIMENTAL)"
 637         depends on SUPERH32 && EXPERIMENTAL
 638         help
 639           Generate crash dump after being started by kexec.
 640           This should be normally only set in special crash dump kernels
 641           which are loaded in the main kernel with kexec-tools into
 642           a specially reserved region and then later executed after
 643           a crash by kdump/kexec. The crash dump kernel must be compiled
 644           to a memory address not used by the main kernel using
 645           MEMORY_START.
 646
 647           For more details see Documentation/kdump/kdump.txt
 648
 649 config KEXEC_JUMP
 650         bool "kexec jump (EXPERIMENTAL)"
 651         depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
 652         help
 653           Jump between original kernel and kexeced kernel and invoke
 654           code via KEXEC
 655
 656 config SECCOMP
 657         bool "Enable seccomp to safely compute untrusted bytecode"
 658         depends on PROC_FS
 659         help
 660           This kernel feature is useful for number crunching applications
 661           that may need to compute untrusted bytecode during their
 662           execution. By using pipes or other transports made available to
 663           the process as file descriptors supporting the read/write
 664           syscalls, it's possible to isolate those applications in
 665           their own address space using seccomp. Once seccomp is
 666           enabled via prctl, it cannot be disabled and the task is only
 667           allowed to execute a few safe syscalls defined by each seccomp
 668           mode.
 669
 670           If unsure, say N.
 671
 672 config SMP
 673         bool "Symmetric multi-processing support"
 674         depends on SYS_SUPPORTS_SMP
 675         select USE_GENERIC_SMP_HELPERS
 676         ---help---
 677           This enables support for systems with more than one CPU. If you have
 678           a system with only one CPU, like most personal computers, say N. If
 679           you have a system with more than one CPU, say Y.
 680
 681           If you say N here, the kernel will run on single and multiprocessor
 682           machines, but will use only one CPU of a multiprocessor machine. If
 683           you say Y here, the kernel will run on many, but not all,
 684           singleprocessor machines. On a singleprocessor machine, the kernel
 685           will run faster if you say N here.
 686
 687           People using multiprocessor machines who say Y here should also say
 688           Y to "Enhanced Real Time Clock Support", below.
 689
 690           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 691           available at <http://www.tldp.org/docs.html#howto>.
 692
 693           If you don't know what to do here, say N.
 694
 695 config NR_CPUS
 696         int "Maximum number of CPUs (2-32)"
 697         range 2 32
 698         depends on SMP
 699         default "4" if CPU_SUBTYPE_SHX3
 700         default "2"
 701         help
 702           This allows you to specify the maximum number of CPUs which this
 703           kernel will support.  The maximum supported value is 32 and the
 704           minimum value which makes sense is 2.
 705
 706           This is purely to save memory - each supported CPU adds
 707           approximately eight kilobytes to the kernel image.
 708
 709 source "kernel/Kconfig.preempt"
 710
 711 config GUSA
 712         def_bool y
 713         depends on !SMP && SUPERH32
 714         help
 715           This enables support for gUSA (general UserSpace Atomicity).
 716           This is the default implementation for both UP and non-ll/sc
 717           CPUs, and is used by the libc, amongst others.
 718
 719           For additional information, design information can be found
 720           in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
 721
 722           This should only be disabled for special cases where alternate
 723           atomicity implementations exist.
 724
 725 config GUSA_RB
 726         bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
 727         depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
 728         help
 729           Enabling this option will allow the kernel to implement some
 730           atomic operations using a software implementation of load-locked/
 731           store-conditional (LLSC). On machines which do not have hardware
 732           LLSC, this should be more efficient than the other alternative of
 733           disabling interrupts around the atomic sequence.
 734
 735 source "drivers/sh/Kconfig"
 736
 737 endmenu
 738
 739 menu "Boot options"
 740
 741 config ZERO_PAGE_OFFSET
 742         hex
 743         default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
 744                                 SH_7751_SOLUTION_ENGINE
 745         default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
 746         default "0x00002000" if PAGE_SIZE_8KB
 747         default "0x00001000"
 748         help
 749           This sets the default offset of zero page.
 750
 751 config BOOT_LINK_OFFSET
 752         hex
 753         default "0x00210000" if SH_SHMIN
 754         default "0x00400000" if SH_CAYMAN
 755         default "0x00810000" if SH_7780_SOLUTION_ENGINE
 756         default "0x009e0000" if SH_TITAN
 757         default "0x01800000" if SH_SDK7780
 758         default "0x02000000" if SH_EDOSK7760
 759         default "0x00800000"
 760         help
 761           This option allows you to set the link address offset of the zImage.
 762           This can be useful if you are on a board which has a small amount of
 763           memory.
 764
 765 config ENTRY_OFFSET
 766         hex
 767         default "0x00001000" if PAGE_SIZE_4KB
 768         default "0x00002000" if PAGE_SIZE_8KB
 769         default "0x00004000" if PAGE_SIZE_16KB
 770         default "0x00010000" if PAGE_SIZE_64KB
 771         default "0x00000000"
 772
 773 choice
 774         prompt "Kernel command line"
 775         optional
 776         default CMDLINE_OVERWRITE
 777         help
 778           Setting this option allows the kernel command line arguments
 779           to be set.
 780
 781 config CMDLINE_OVERWRITE
 782         bool "Overwrite bootloader kernel arguments"
 783         help
 784           Given string will overwrite any arguments passed in by
 785           a bootloader.
 786
 787 config CMDLINE_EXTEND
 788         bool "Extend bootloader kernel arguments"
 789         help
 790           Given string will be concatenated with arguments passed in
 791           by a bootloader.
 792
 793 endchoice
 794
 795 config CMDLINE
 796         string "Kernel command line arguments string"
 797         depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
 798         default "console=ttySC1,115200"
 799
 800 endmenu
 801
 802 menu "Bus options"
 803
 804 config SUPERHYWAY
 805         tristate "SuperHyway Bus support"
 806         depends on CPU_SUBTYPE_SH4_202
 807
 808 config MAPLE
 809         bool "Maple Bus support"
 810         depends on SH_DREAMCAST
 811         help
 812          The Maple Bus is SEGA's serial communication bus for peripherals
 813          on the Dreamcast. Without this bus support you won't be able to
 814          get your Dreamcast keyboard etc to work, so most users
 815          probably want to say 'Y' here, unless you are only using the
 816          Dreamcast with a serial line terminal or a remote network
 817          connection.
 818
 819 config PCI
 820         bool "PCI support"
 821         depends on SYS_SUPPORTS_PCI
 822         select PCI_DOMAINS
 823         help
 824           Find out whether you have a PCI motherboard. PCI is the name of a
 825           bus system, i.e. the way the CPU talks to the other stuff inside
 826           your box. If you have PCI, say Y, otherwise N.
 827
 828 config PCI_DOMAINS
 829         bool
 830
 831 source "drivers/pci/pcie/Kconfig"
 832
 833 source "drivers/pci/Kconfig"
 834
 835 source "drivers/pcmcia/Kconfig"
 836
 837 source "drivers/pci/hotplug/Kconfig"
 838
 839 endmenu
 840
 841 menu "Executable file formats"
 842
 843 source "fs/Kconfig.binfmt"
 844
 845 endmenu
 846
 847 menu "Power management options (EXPERIMENTAL)"
 848 depends on EXPERIMENTAL
 849
 850 source "kernel/power/Kconfig"
 851
 852 source "drivers/cpuidle/Kconfig"
 853
 854 endmenu
 855
 856 source "net/Kconfig"
 857
 858 source "drivers/Kconfig"
 859
 860 source "fs/Kconfig"
 861
 862 source "arch/sh/Kconfig.debug"
 863
 864 source "security/Kconfig"
 865
 866 source "crypto/Kconfig"
 867
 868 source "lib/Kconfig"