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_OPROFILE
  14         select HAVE_GENERIC_DMA_COHERENT
  15         select HAVE_IOREMAP_PROT if MMU
  16         select HAVE_ARCH_TRACEHOOK
  17         help
  18           The SuperH is a RISC processor targeted for use in embedded systems
  19           and consumer electronics; it was also used in the Sega Dreamcast
  20           gaming console.  The SuperH port has a home page at
  21           <http://www.linux-sh.org/>.
  22
  23 config SUPERH32
  24         def_bool !SUPERH64
  25         select HAVE_KPROBES
  26         select HAVE_KRETPROBES
  27         select HAVE_FUNCTION_TRACER
  28         select HAVE_FTRACE_MCOUNT_RECORD
  29         select HAVE_DYNAMIC_FTRACE
  30         select HAVE_ARCH_KGDB
  31
  32 config SUPERH64
  33         def_bool y if CPU_SH5
  34
  35 config ARCH_DEFCONFIG
  36         string
  37         default "arch/sh/configs/shx3_defconfig" if SUPERH32
  38         default "arch/sh/configs/cayman_defconfig" if SUPERH64
  39
  40 config RWSEM_GENERIC_SPINLOCK
  41         def_bool y
  42
  43 config RWSEM_XCHGADD_ALGORITHM
  44         bool
  45
  46 config GENERIC_BUG
  47         def_bool y
  48         depends on BUG && SUPERH32
  49
  50 config GENERIC_FIND_NEXT_BIT
  51         def_bool y
  52
  53 config GENERIC_HWEIGHT
  54         def_bool y
  55
  56 config GENERIC_HARDIRQS
  57         def_bool y
  58
  59 config GENERIC_HARDIRQS_NO__DO_IRQ
  60         def_bool y
  61
  62 config GENERIC_IRQ_PROBE
  63         def_bool y
  64
  65 config GENERIC_GPIO
  66         def_bool n
  67
  68 config GENERIC_CALIBRATE_DELAY
  69         bool
  70
  71 config GENERIC_IOMAP
  72         bool
  73
  74 config GENERIC_TIME
  75         def_bool n
  76
  77 config GENERIC_CLOCKEVENTS
  78         def_bool n
  79
  80 config GENERIC_CLOCKEVENTS_BROADCAST
  81         bool
  82
  83 config GENERIC_LOCKBREAK
  84         def_bool y
  85         depends on SMP && PREEMPT
  86
  87 config SYS_SUPPORTS_PM
  88         bool
  89         depends on !SMP
  90
  91 config ARCH_SUSPEND_POSSIBLE
  92         def_bool n
  93
  94 config ARCH_HIBERNATION_POSSIBLE
  95         def_bool n
  96
  97 config SYS_SUPPORTS_APM_EMULATION
  98         bool
  99         select ARCH_SUSPEND_POSSIBLE
 100
 101 config SYS_SUPPORTS_SMP
 102         bool
 103
 104 config SYS_SUPPORTS_NUMA
 105         bool
 106
 107 config SYS_SUPPORTS_PCI
 108         bool
 109
 110 config STACKTRACE_SUPPORT
 111         def_bool y
 112
 113 config LOCKDEP_SUPPORT
 114         def_bool y
 115
 116 config HAVE_LATENCYTOP_SUPPORT
 117         def_bool y
 118         depends on !SMP
 119
 120 config ARCH_HAS_ILOG2_U32
 121         def_bool n
 122
 123 config ARCH_HAS_ILOG2_U64
 124         def_bool n
 125
 126 config ARCH_NO_VIRT_TO_BUS
 127         def_bool y
 128
 129 config IO_TRAPPED
 130         bool
 131
 132 source "init/Kconfig"
 133
 134 source "kernel/Kconfig.freezer"
 135
 136 menu "System type"
 137
 138 #
 139 # Processor families
 140 #
 141 config CPU_SH2
 142         bool
 143
 144 config CPU_SH2A
 145         bool
 146         select CPU_SH2
 147
 148 config CPU_SH3
 149         bool
 150         select CPU_HAS_INTEVT
 151         select CPU_HAS_SR_RB
 152
 153 config CPU_SH4
 154         bool
 155         select CPU_HAS_INTEVT
 156         select CPU_HAS_SR_RB
 157         select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
 158         select CPU_HAS_FPU if !CPU_SH4AL_DSP
 159
 160 config CPU_SH4A
 161         bool
 162         select CPU_SH4
 163
 164 config CPU_SH4AL_DSP
 165         bool
 166         select CPU_SH4A
 167         select CPU_HAS_DSP
 168
 169 config CPU_SH5
 170         bool
 171         select CPU_HAS_FPU
 172
 173 config CPU_SHX2
 174         bool
 175
 176 config CPU_SHX3
 177         bool
 178
 179 choice
 180         prompt "Processor sub-type selection"
 181
 182 #
 183 # Processor subtypes
 184 #
 185
 186 # SH-2 Processor Support
 187
 188 config CPU_SUBTYPE_SH7619
 189         bool "Support SH7619 processor"
 190         select CPU_SH2
 191
 192 # SH-2A Processor Support
 193
 194 config CPU_SUBTYPE_SH7201
 195         bool "Support SH7201 processor"
 196         select CPU_SH2A
 197         select CPU_HAS_FPU
 198
 199 config CPU_SUBTYPE_SH7203
 200         bool "Support SH7203 processor"
 201         select CPU_SH2A
 202         select CPU_HAS_FPU
 203
 204 config CPU_SUBTYPE_SH7206
 205         bool "Support SH7206 processor"
 206         select CPU_SH2A
 207
 208 config CPU_SUBTYPE_SH7263
 209         bool "Support SH7263 processor"
 210         select CPU_SH2A
 211         select CPU_HAS_FPU
 212
 213 config CPU_SUBTYPE_MXG
 214         bool "Support MX-G processor"
 215         select CPU_SH2A
 216         help
 217           Select MX-G if running on an R8A03022BG part.
 218
 219 # SH-3 Processor Support
 220
 221 config CPU_SUBTYPE_SH7705
 222         bool "Support SH7705 processor"
 223         select CPU_SH3
 224
 225 config CPU_SUBTYPE_SH7706
 226         bool "Support SH7706 processor"
 227         select CPU_SH3
 228         help
 229           Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
 230
 231 config CPU_SUBTYPE_SH7707
 232         bool "Support SH7707 processor"
 233         select CPU_SH3
 234         help
 235           Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
 236
 237 config CPU_SUBTYPE_SH7708
 238         bool "Support SH7708 processor"
 239         select CPU_SH3
 240         help
 241           Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
 242           if you have a 100 Mhz SH-3 HD6417708R CPU.
 243
 244 config CPU_SUBTYPE_SH7709
 245         bool "Support SH7709 processor"
 246         select CPU_SH3
 247         help
 248           Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
 249
 250 config CPU_SUBTYPE_SH7710
 251         bool "Support SH7710 processor"
 252         select CPU_SH3
 253         select CPU_HAS_DSP
 254         help
 255           Select SH7710 if you have a SH3-DSP SH7710 CPU.
 256
 257 config CPU_SUBTYPE_SH7712
 258         bool "Support SH7712 processor"
 259         select CPU_SH3
 260         select CPU_HAS_DSP
 261         help
 262           Select SH7712 if you have a SH3-DSP SH7712 CPU.
 263
 264 config CPU_SUBTYPE_SH7720
 265         bool "Support SH7720 processor"
 266         select CPU_SH3
 267         select CPU_HAS_DSP
 268         help
 269           Select SH7720 if you have a SH3-DSP SH7720 CPU.
 270
 271 config CPU_SUBTYPE_SH7721
 272         bool "Support SH7721 processor"
 273         select CPU_SH3
 274         select CPU_HAS_DSP
 275         help
 276           Select SH7721 if you have a SH3-DSP SH7721 CPU.
 277
 278 # SH-4 Processor Support
 279
 280 config CPU_SUBTYPE_SH7750
 281         bool "Support SH7750 processor"
 282         select CPU_SH4
 283         help
 284           Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
 285
 286 config CPU_SUBTYPE_SH7091
 287         bool "Support SH7091 processor"
 288         select CPU_SH4
 289         help
 290           Select SH7091 if you have an SH-4 based Sega device (such as
 291           the Dreamcast, Naomi, and Naomi 2).
 292
 293 config CPU_SUBTYPE_SH7750R
 294         bool "Support SH7750R processor"
 295         select CPU_SH4
 296
 297 config CPU_SUBTYPE_SH7750S
 298         bool "Support SH7750S processor"
 299         select CPU_SH4
 300
 301 config CPU_SUBTYPE_SH7751
 302         bool "Support SH7751 processor"
 303         select CPU_SH4
 304         help
 305           Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
 306           or if you have a HD6417751R CPU.
 307
 308 config CPU_SUBTYPE_SH7751R
 309         bool "Support SH7751R processor"
 310         select CPU_SH4
 311
 312 config CPU_SUBTYPE_SH7760
 313         bool "Support SH7760 processor"
 314         select CPU_SH4
 315
 316 config CPU_SUBTYPE_SH4_202
 317         bool "Support SH4-202 processor"
 318         select CPU_SH4
 319
 320 # SH-4A Processor Support
 321
 322 config CPU_SUBTYPE_SH7723
 323         bool "Support SH7723 processor"
 324         select CPU_SH4A
 325         select CPU_SHX2
 326         select ARCH_SPARSEMEM_ENABLE
 327         help
 328           Select SH7723 if you have an SH-MobileR2 CPU.
 329
 330 config CPU_SUBTYPE_SH7763
 331         bool "Support SH7763 processor"
 332         select CPU_SH4A
 333         help
 334           Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
 335
 336 config CPU_SUBTYPE_SH7770
 337         bool "Support SH7770 processor"
 338         select CPU_SH4A
 339
 340 config CPU_SUBTYPE_SH7780
 341         bool "Support SH7780 processor"
 342         select CPU_SH4A
 343
 344 config CPU_SUBTYPE_SH7785
 345         bool "Support SH7785 processor"
 346         select CPU_SH4A
 347         select CPU_SHX2
 348         select ARCH_SPARSEMEM_ENABLE
 349         select SYS_SUPPORTS_NUMA
 350
 351 config CPU_SUBTYPE_SHX3
 352         bool "Support SH-X3 processor"
 353         select CPU_SH4A
 354         select CPU_SHX3
 355         select ARCH_SPARSEMEM_ENABLE
 356         select SYS_SUPPORTS_NUMA
 357         select SYS_SUPPORTS_SMP
 358         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 359
 360 # SH4AL-DSP Processor Support
 361
 362 config CPU_SUBTYPE_SH7343
 363         bool "Support SH7343 processor"
 364         select CPU_SH4AL_DSP
 365
 366 config CPU_SUBTYPE_SH7722
 367         bool "Support SH7722 processor"
 368         select CPU_SH4AL_DSP
 369         select CPU_SHX2
 370         select ARCH_SPARSEMEM_ENABLE
 371         select SYS_SUPPORTS_NUMA
 372
 373 config CPU_SUBTYPE_SH7366
 374         bool "Support SH7366 processor"
 375         select CPU_SH4AL_DSP
 376         select CPU_SHX2
 377         select ARCH_SPARSEMEM_ENABLE
 378         select SYS_SUPPORTS_NUMA
 379
 380 # SH-5 Processor Support
 381
 382 config CPU_SUBTYPE_SH5_101
 383         bool "Support SH5-101 processor"
 384         select CPU_SH5
 385
 386 config CPU_SUBTYPE_SH5_103
 387         bool "Support SH5-103 processor"
 388         select CPU_SH5
 389
 390 endchoice
 391
 392 source "arch/sh/mm/Kconfig"
 393
 394 source "arch/sh/Kconfig.cpu"
 395
 396 source "arch/sh/boards/Kconfig"
 397
 398 menu "Timer and clock configuration"
 399
 400 config SH_TMU
 401         def_bool y
 402         prompt "TMU timer support"
 403         depends on CPU_SH3 || CPU_SH4
 404         select GENERIC_TIME
 405         select GENERIC_CLOCKEVENTS
 406         help
 407           This enables the use of the TMU as the system timer.
 408
 409 config SH_CMT
 410         def_bool y
 411         prompt "CMT timer support"
 412         depends on CPU_SH2 && !CPU_SUBTYPE_MXG
 413         help
 414           This enables the use of the CMT as the system timer.
 415
 416 config SH_MTU2
 417         def_bool n
 418         prompt "MTU2 timer support"
 419         depends on CPU_SH2A
 420         help
 421           This enables the use of the MTU2 as the system timer.
 422
 423 config SH_TIMER_IRQ
 424         int
 425         default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
 426                         CPU_SUBTYPE_SH7763
 427         default "86" if CPU_SUBTYPE_SH7619
 428         default "140" if CPU_SUBTYPE_SH7206
 429         default "142" if CPU_SUBTYPE_SH7203
 430         default "238" if CPU_SUBTYPE_MXG
 431         default "16"
 432
 433 config SH_PCLK_FREQ
 434         int "Peripheral clock frequency (in Hz)"
 435         default "27000000" if CPU_SUBTYPE_SH7343
 436         default "31250000" if CPU_SUBTYPE_SH7619
 437         default "32000000" if CPU_SUBTYPE_SH7722
 438         default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
 439                               CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
 440                               CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
 441                               CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG
 442         default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
 443         default "66000000" if CPU_SUBTYPE_SH4_202
 444         default "50000000"
 445         help
 446           This option is used to specify the peripheral clock frequency.
 447           This is necessary for determining the reference clock value on
 448           platforms lacking an RTC.
 449
 450 config SH_CLK_MD
 451         int "CPU Mode Pin Setting"
 452         depends on CPU_SH2
 453         default 6 if CPU_SUBTYPE_SH7206
 454         default 5 if CPU_SUBTYPE_SH7619
 455         default 0
 456         help
 457           MD2 - MD0 pin setting.
 458
 459 source "kernel/time/Kconfig"
 460
 461 endmenu
 462
 463 menu "CPU Frequency scaling"
 464
 465 source "drivers/cpufreq/Kconfig"
 466
 467 config SH_CPU_FREQ
 468         tristate "SuperH CPU Frequency driver"
 469         depends on CPU_FREQ
 470         select CPU_FREQ_TABLE
 471         help
 472           This adds the cpufreq driver for SuperH. Any CPU that supports
 473           clock rate rounding through the clock framework can use this
 474           driver. While it will make the kernel slightly larger, this is
 475           harmless for CPUs that don't support rate rounding. The driver
 476           will also generate a notice in the boot log before disabling
 477           itself if the CPU in question is not capable of rate rounding.
 478
 479           For details, take a look at <file:Documentation/cpu-freq>.
 480
 481           If unsure, say N.
 482
 483 endmenu
 484
 485 source "arch/sh/drivers/Kconfig"
 486
 487 endmenu
 488
 489 menu "Kernel features"
 490
 491 source kernel/Kconfig.hz
 492
 493 config KEXEC
 494         bool "kexec system call (EXPERIMENTAL)"
 495         depends on SUPERH32 && EXPERIMENTAL
 496         help
 497           kexec is a system call that implements the ability to shutdown your
 498           current kernel, and to start another kernel.  It is like a reboot
 499           but it is independent of the system firmware.  And like a reboot
 500           you can start any kernel with it, not just Linux.
 501
 502           The name comes from the similarity to the exec system call.
 503
 504           It is an ongoing process to be certain the hardware in a machine
 505           is properly shutdown, so do not be surprised if this code does not
 506           initially work for you.  It may help to enable device hotplugging
 507           support.  As of this writing the exact hardware interface is
 508           strongly in flux, so no good recommendation can be made.
 509
 510 config CRASH_DUMP
 511         bool "kernel crash dumps (EXPERIMENTAL)"
 512         depends on SUPERH32 && EXPERIMENTAL
 513         help
 514           Generate crash dump after being started by kexec.
 515           This should be normally only set in special crash dump kernels
 516           which are loaded in the main kernel with kexec-tools into
 517           a specially reserved region and then later executed after
 518           a crash by kdump/kexec. The crash dump kernel must be compiled
 519           to a memory address not used by the main kernel using
 520           MEMORY_START.
 521
 522           For more details see Documentation/kdump/kdump.txt
 523
 524 config SECCOMP
 525         bool "Enable seccomp to safely compute untrusted bytecode"
 526         depends on PROC_FS
 527         help
 528           This kernel feature is useful for number crunching applications
 529           that may need to compute untrusted bytecode during their
 530           execution. By using pipes or other transports made available to
 531           the process as file descriptors supporting the read/write
 532           syscalls, it's possible to isolate those applications in
 533           their own address space using seccomp. Once seccomp is
 534           enabled via prctl, it cannot be disabled and the task is only
 535           allowed to execute a few safe syscalls defined by each seccomp
 536           mode.
 537
 538           If unsure, say N.
 539
 540 config SMP
 541         bool "Symmetric multi-processing support"
 542         depends on SYS_SUPPORTS_SMP
 543         select USE_GENERIC_SMP_HELPERS
 544         ---help---
 545           This enables support for systems with more than one CPU. If you have
 546           a system with only one CPU, like most personal computers, say N. If
 547           you have a system with more than one CPU, say Y.
 548
 549           If you say N here, the kernel will run on single and multiprocessor
 550           machines, but will use only one CPU of a multiprocessor machine. If
 551           you say Y here, the kernel will run on many, but not all,
 552           singleprocessor machines. On a singleprocessor machine, the kernel
 553           will run faster if you say N here.
 554
 555           People using multiprocessor machines who say Y here should also say
 556           Y to "Enhanced Real Time Clock Support", below.
 557
 558           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 559           available at <http://www.tldp.org/docs.html#howto>.
 560
 561           If you don't know what to do here, say N.
 562
 563 config NR_CPUS
 564         int "Maximum number of CPUs (2-32)"
 565         range 2 32
 566         depends on SMP
 567         default "4" if CPU_SHX3
 568         default "2"
 569         help
 570           This allows you to specify the maximum number of CPUs which this
 571           kernel will support.  The maximum supported value is 32 and the
 572           minimum value which makes sense is 2.
 573
 574           This is purely to save memory - each supported CPU adds
 575           approximately eight kilobytes to the kernel image.
 576
 577 source "kernel/Kconfig.preempt"
 578
 579 config GUSA
 580         def_bool y
 581         depends on !SMP && SUPERH32
 582         help
 583           This enables support for gUSA (general UserSpace Atomicity).
 584           This is the default implementation for both UP and non-ll/sc
 585           CPUs, and is used by the libc, amongst others.
 586
 587           For additional information, design information can be found
 588           in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
 589
 590           This should only be disabled for special cases where alternate
 591           atomicity implementations exist.
 592
 593 config GUSA_RB
 594         bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
 595         depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
 596         help
 597           Enabling this option will allow the kernel to implement some
 598           atomic operations using a software implemention of load-locked/
 599           store-conditional (LLSC). On machines which do not have hardware
 600           LLSC, this should be more efficient than the other alternative of
 601           disabling insterrupts around the atomic sequence.
 602
 603 endmenu
 604
 605 menu "Boot options"
 606
 607 config ZERO_PAGE_OFFSET
 608         hex "Zero page offset"
 609         default "0x00004000" if SH_SH03
 610         default "0x00010000" if PAGE_SIZE_64KB
 611         default "0x00002000" if PAGE_SIZE_8KB
 612         default "0x00001000"
 613         help
 614           This sets the default offset of zero page.
 615
 616 config BOOT_LINK_OFFSET
 617         hex "Link address offset for booting"
 618         default "0x00800000"
 619         help
 620           This option allows you to set the link address offset of the zImage.
 621           This can be useful if you are on a board which has a small amount of
 622           memory.
 623
 624 config UBC_WAKEUP
 625         bool "Wakeup UBC on startup"
 626         depends on CPU_SH4 && !CPU_SH4A
 627         help
 628           Selecting this option will wakeup the User Break Controller (UBC) on
 629           startup. Although the UBC is left in an awake state when the processor
 630           comes up, some boot loaders misbehave by putting the UBC to sleep in a
 631           power saving state, which causes issues with things like ptrace().
 632
 633           If unsure, say N.
 634
 635 config CMDLINE_BOOL
 636         bool "Default bootloader kernel arguments"
 637
 638 config CMDLINE
 639         string "Initial kernel command string"
 640         depends on CMDLINE_BOOL
 641         default "console=ttySC1,115200"
 642
 643 endmenu
 644
 645 menu "Bus options"
 646
 647 config SUPERHYWAY
 648         tristate "SuperHyway Bus support"
 649         depends on CPU_SUBTYPE_SH4_202
 650
 651 config MAPLE
 652         bool "Maple Bus support"
 653         depends on SH_DREAMCAST
 654         help
 655          The Maple Bus is SEGA's serial communication bus for peripherals
 656          on the Dreamcast. Without this bus support you won't be able to
 657          get your Dreamcast keyboard etc to work, so most users
 658          probably want to say 'Y' here, unless you are only using the
 659          Dreamcast with a serial line terminal or a remote network
 660          connection.
 661
 662 source "arch/sh/drivers/pci/Kconfig"
 663
 664 source "drivers/pci/pcie/Kconfig"
 665
 666 source "drivers/pci/Kconfig"
 667
 668 source "drivers/pcmcia/Kconfig"
 669
 670 source "drivers/pci/hotplug/Kconfig"
 671
 672 endmenu
 673
 674 menu "Executable file formats"
 675
 676 source "fs/Kconfig.binfmt"
 677
 678 endmenu
 679
 680 menu "Power management options (EXPERIMENTAL)"
 681 depends on EXPERIMENTAL
 682
 683 source "kernel/power/Kconfig"
 684
 685 source "drivers/cpuidle/Kconfig"
 686
 687 endmenu
 688
 689 source "net/Kconfig"
 690
 691 source "drivers/Kconfig"
 692
 693 source "fs/Kconfig"
 694
 695 source "arch/sh/Kconfig.debug"
 696
 697 source "security/Kconfig"
 698
 699 source "crypto/Kconfig"
 700
 701 source "lib/Kconfig"