arch/sparc/Kconfig

   1 config 64BIT
   2         bool "64-bit kernel" if ARCH = "sparc"
   3         default ARCH = "sparc64"
   4         help
   5           SPARC is a family of RISC microprocessors designed and marketed by
   6           Sun Microsystems, incorporated.  They are very widely found in Sun
   7           workstations and clones.
   8
   9           Say yes to build a 64-bit kernel - formerly known as sparc64
  10           Say no to build a 32-bit kernel - formerly known as sparc
  11
  12 config SPARC
  13         bool
  14         default y
  15         select OF
  16         select HAVE_IDE
  17         select HAVE_OPROFILE
  18         select HAVE_ARCH_KGDB if !SMP || SPARC64
  19         select HAVE_ARCH_TRACEHOOK
  20         select ARCH_WANT_OPTIONAL_GPIOLIB
  21         select RTC_CLASS
  22         select RTC_DRV_M48T59
  23         select HAVE_PERF_EVENTS
  24         select PERF_USE_VMALLOC
  25         select HAVE_DMA_ATTRS
  26         select HAVE_DMA_API_DEBUG
  27
  28 config SPARC32
  29         def_bool !64BIT
  30
  31 config SPARC64
  32         def_bool 64BIT
  33         select ARCH_SUPPORTS_MSI
  34         select HAVE_FUNCTION_TRACER
  35         select HAVE_FUNCTION_GRAPH_TRACER
  36         select HAVE_FUNCTION_GRAPH_FP_TEST
  37         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  38         select HAVE_KRETPROBES
  39         select HAVE_KPROBES
  40         select HAVE_MEMBLOCK
  41         select HAVE_SYSCALL_WRAPPERS
  42         select HAVE_DYNAMIC_FTRACE
  43         select HAVE_FTRACE_MCOUNT_RECORD
  44         select HAVE_SYSCALL_TRACEPOINTS
  45         select USE_GENERIC_SMP_HELPERS if SMP
  46         select RTC_DRV_CMOS
  47         select RTC_DRV_BQ4802
  48         select RTC_DRV_SUN4V
  49         select RTC_DRV_STARFIRE
  50         select HAVE_PERF_EVENTS
  51         select PERF_USE_VMALLOC
  52
  53 config ARCH_DEFCONFIG
  54         string
  55         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  56         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  57
  58 # CONFIG_BITS can be used at source level to get 32/64 bits
  59 config BITS
  60         int
  61         default 32 if SPARC32
  62         default 64 if SPARC64
  63
  64 config ARCH_USES_GETTIMEOFFSET
  65         bool
  66         default y if SPARC32
  67
  68 config GENERIC_CMOS_UPDATE
  69         bool
  70         default y
  71
  72 config GENERIC_CLOCKEVENTS
  73         bool
  74         default y if SPARC64
  75
  76 config IOMMU_HELPER
  77         bool
  78         default y if SPARC64
  79
  80 config QUICKLIST
  81         bool
  82         default y if SPARC64
  83
  84 config STACKTRACE_SUPPORT
  85         bool
  86         default y if SPARC64
  87
  88 config LOCKDEP_SUPPORT
  89         bool
  90         default y if SPARC64
  91
  92 config HAVE_LATENCYTOP_SUPPORT
  93         bool
  94         default y if SPARC64
  95
  96 config AUDIT_ARCH
  97         bool
  98         default y
  99
 100 config HAVE_SETUP_PER_CPU_AREA
 101         def_bool y if SPARC64
 102
 103 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 104         def_bool y if SPARC64
 105
 106 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 107         def_bool y if SPARC64
 108
 109 config GENERIC_HARDIRQS_NO__DO_IRQ
 110         bool
 111         def_bool y if SPARC64
 112
 113 config MMU
 114         bool
 115         default y
 116
 117 config HIGHMEM
 118         bool
 119         default y if SPARC32
 120
 121 config ZONE_DMA
 122         bool
 123         default y if SPARC32
 124
 125 config NEED_DMA_MAP_STATE
 126         def_bool y
 127
 128 config NEED_SG_DMA_LENGTH
 129         def_bool y
 130
 131 config GENERIC_ISA_DMA
 132         bool
 133         default y if SPARC32
 134
 135 config GENERIC_GPIO
 136         bool
 137         help
 138           Generic GPIO API support
 139
 140 config ARCH_NO_VIRT_TO_BUS
 141         def_bool y
 142
 143 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 144         def_bool y if SPARC64
 145
 146 source "init/Kconfig"
 147
 148 source "kernel/Kconfig.freezer"
 149
 150 menu "Processor type and features"
 151
 152 config SMP
 153         bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
 154         ---help---
 155           This enables support for systems with more than one CPU. If you have
 156           a system with only one CPU, say N. If you have a system with more
 157           than one CPU, say Y.
 158
 159           If you say N here, the kernel will run on single and multiprocessor
 160           machines, but will use only one CPU of a multiprocessor machine. If
 161           you say Y here, the kernel will run on many, but not all,
 162           singleprocessor machines. On a singleprocessor machine, the kernel
 163           will run faster if you say N here.
 164
 165           People using multiprocessor machines who say Y here should also say
 166           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 167           Management" code will be disabled if you say Y here.
 168
 169           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 170           available at <http://www.tldp.org/docs.html#howto>.
 171
 172           If you don't know what to do here, say N.
 173
 174 config NR_CPUS
 175         int "Maximum number of CPUs"
 176         depends on SMP
 177         range 2 32 if SPARC32
 178         range 2 1024 if SPARC64
 179         default 32 if SPARC32
 180         default 64 if SPARC64
 181
 182 source kernel/Kconfig.hz
 183
 184 config RWSEM_GENERIC_SPINLOCK
 185         bool
 186         default y if SPARC32
 187
 188 config RWSEM_XCHGADD_ALGORITHM
 189         bool
 190         default y if SPARC64
 191
 192 config GENERIC_FIND_NEXT_BIT
 193         bool
 194         default y
 195
 196 config GENERIC_HWEIGHT
 197         bool
 198         default y if !ULTRA_HAS_POPULATION_COUNT
 199
 200 config GENERIC_CALIBRATE_DELAY
 201         bool
 202         default y
 203
 204 config ARCH_MAY_HAVE_PC_FDC
 205         bool
 206         default y
 207
 208 config EMULATED_CMPXCHG
 209         bool
 210         default y if SPARC32
 211         help
 212           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 213           is emulated, and therefore it is not completely atomic.
 214
 215 # Makefile helpers
 216 config SPARC32_SMP
 217         bool
 218         default y
 219         depends on SPARC32 && SMP
 220
 221 config SPARC64_SMP
 222         bool
 223         default y
 224         depends on SPARC64 && SMP
 225
 226 config EARLYFB
 227         bool "Support for early boot text console"
 228         default y
 229         depends on SPARC64
 230         help
 231           Say Y here to enable a faster early framebuffer boot console.
 232
 233 choice
 234         prompt "Kernel page size" if SPARC64
 235         default SPARC64_PAGE_SIZE_8KB
 236
 237 config SPARC64_PAGE_SIZE_8KB
 238         bool "8KB"
 239         help
 240           This lets you select the page size of the kernel.
 241
 242           8KB and 64KB work quite well, since SPARC ELF sections
 243           provide for up to 64KB alignment.
 244
 245           If you don't know what to do, choose 8KB.
 246
 247 config SPARC64_PAGE_SIZE_64KB
 248         bool "64KB"
 249
 250 endchoice
 251
 252 config SECCOMP
 253         bool "Enable seccomp to safely compute untrusted bytecode"
 254         depends on SPARC64 && PROC_FS
 255         default y
 256         help
 257           This kernel feature is useful for number crunching applications
 258           that may need to compute untrusted bytecode during their
 259           execution. By using pipes or other transports made available to
 260           the process as file descriptors supporting the read/write
 261           syscalls, it's possible to isolate those applications in
 262           their own address space using seccomp. Once seccomp is
 263           enabled via /proc/<pid>/seccomp, it cannot be disabled
 264           and the task is only allowed to execute a few safe syscalls
 265           defined by each seccomp mode.
 266
 267           If unsure, say Y. Only embedded should say N here.
 268
 269 config HOTPLUG_CPU
 270         bool "Support for hot-pluggable CPUs"
 271         depends on SPARC64 && SMP
 272         select HOTPLUG
 273         help
 274           Say Y here to experiment with turning CPUs off and on.  CPUs
 275           can be controlled through /sys/devices/system/cpu/cpu#.
 276           Say N if you want to disable CPU hotplug.
 277
 278 config GENERIC_HARDIRQS
 279         bool
 280         default y if SPARC64
 281
 282 source "kernel/time/Kconfig"
 283
 284 if SPARC64
 285 source "drivers/cpufreq/Kconfig"
 286
 287 config US3_FREQ
 288         tristate "UltraSPARC-III CPU Frequency driver"
 289         depends on CPU_FREQ
 290         select CPU_FREQ_TABLE
 291         help
 292           This adds the CPUFreq driver for UltraSPARC-III processors.
 293
 294           For details, take a look at <file:Documentation/cpu-freq>.
 295
 296           If in doubt, say N.
 297
 298 config US2E_FREQ
 299         tristate "UltraSPARC-IIe CPU Frequency driver"
 300         depends on CPU_FREQ
 301         select CPU_FREQ_TABLE
 302         help
 303           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 304
 305           For details, take a look at <file:Documentation/cpu-freq>.
 306
 307           If in doubt, say N.
 308
 309 endif
 310
 311 config US3_MC
 312         tristate "UltraSPARC-III Memory Controller driver"
 313         depends on SPARC64
 314         default y
 315         help
 316           This adds a driver for the UltraSPARC-III memory controller.
 317           Loading this driver allows exact mnemonic strings to be
 318           printed in the event of a memory error, so that the faulty DIMM
 319           on the motherboard can be matched to the error.
 320
 321           If in doubt, say Y, as this information can be very useful.
 322
 323 # Global things across all Sun machines.
 324 config GENERIC_LOCKBREAK
 325         bool
 326         default y
 327         depends on SPARC64 && SMP && PREEMPT
 328
 329 choice
 330         prompt "SPARC64 Huge TLB Page Size"
 331         depends on SPARC64 && HUGETLB_PAGE
 332         default HUGETLB_PAGE_SIZE_4MB
 333
 334 config HUGETLB_PAGE_SIZE_4MB
 335         bool "4MB"
 336
 337 config HUGETLB_PAGE_SIZE_512K
 338         bool "512K"
 339
 340 config HUGETLB_PAGE_SIZE_64K
 341         depends on !SPARC64_PAGE_SIZE_64KB
 342         bool "64K"
 343
 344 endchoice
 345
 346 config NUMA
 347         bool "NUMA support"
 348         depends on SPARC64 && SMP
 349
 350 config NODES_SHIFT
 351         int
 352         default "4"
 353         depends on NEED_MULTIPLE_NODES
 354
 355 # Some NUMA nodes have memory ranges that span
 356 # other nodes.  Even though a pfn is valid and
 357 # between a node's start and end pfns, it may not
 358 # reside on that node.  See memmap_init_zone()
 359 # for details.
 360 config NODES_SPAN_OTHER_NODES
 361         def_bool y
 362         depends on NEED_MULTIPLE_NODES
 363
 364 config ARCH_POPULATES_NODE_MAP
 365         def_bool y if SPARC64
 366
 367 config ARCH_SELECT_MEMORY_MODEL
 368         def_bool y if SPARC64
 369
 370 config ARCH_SPARSEMEM_ENABLE
 371         def_bool y if SPARC64
 372         select SPARSEMEM_VMEMMAP_ENABLE
 373
 374 config ARCH_SPARSEMEM_DEFAULT
 375         def_bool y if SPARC64
 376
 377 source "mm/Kconfig"
 378
 379 config SCHED_SMT
 380         bool "SMT (Hyperthreading) scheduler support"
 381         depends on SPARC64 && SMP
 382         default y
 383         help
 384           SMT scheduler support improves the CPU scheduler's decision making
 385           when dealing with SPARC cpus at a cost of slightly increased overhead
 386           in some places. If unsure say N here.
 387
 388 config SCHED_MC
 389         bool "Multi-core scheduler support"
 390         depends on SPARC64 && SMP
 391         default y
 392         help
 393           Multi-core scheduler support improves the CPU scheduler's decision
 394           making when dealing with multi-core CPU chips at a cost of slightly
 395           increased overhead in some places. If unsure say N here.
 396
 397 if SPARC64
 398 source "kernel/Kconfig.preempt"
 399 endif
 400
 401 config CMDLINE_BOOL
 402         bool "Default bootloader kernel arguments"
 403         depends on SPARC64
 404
 405 config CMDLINE
 406         string "Initial kernel command string"
 407         depends on CMDLINE_BOOL
 408         default "console=ttyS0,9600 root=/dev/sda1"
 409         help
 410           Say Y here if you want to be able to pass default arguments to
 411           the kernel. This will be overridden by the bootloader, if you
 412           use one (such as SILO). This is most useful if you want to boot
 413           a kernel from TFTP, and want default options to be available
 414           with having them passed on the command line.
 415
 416           NOTE: This option WILL override the PROM bootargs setting!
 417
 418 config SUN_PM
 419         bool
 420         default y if SPARC32
 421         help
 422           Enable power management and CPU standby features on supported
 423           SPARC platforms.
 424
 425 config SPARC_LED
 426         tristate "Sun4m LED driver"
 427         depends on SPARC32
 428         help
 429           This driver toggles the front-panel LED on sun4m systems
 430           in a user-specifiable manner.  Its state can be probed
 431           by reading /proc/led and its blinking mode can be changed
 432           via writes to /proc/led
 433
 434 config SERIAL_CONSOLE
 435         bool
 436         depends on SPARC32
 437         default y
 438         ---help---
 439           If you say Y here, it will be possible to use a serial port as the
 440           system console (the system console is the device which receives all
 441           kernel messages and warnings and which allows logins in single user
 442           mode). This could be useful if some terminal or printer is connected
 443           to that serial port.
 444
 445           Even if you say Y here, the currently visible virtual console
 446           (/dev/tty0) will still be used as the system console by default, but
 447           you can alter that using a kernel command line option such as
 448           "console=ttyS1". (Try "man bootparam" or see the documentation of
 449           your boot loader (silo) about how to pass options to the kernel at
 450           boot time.)
 451
 452           If you don't have a graphics card installed and you say Y here, the
 453           kernel will automatically use the first serial line, /dev/ttyS0, as
 454           system console.
 455
 456           If unsure, say N.
 457
 458 config SPARC_LEON
 459         bool "Sparc Leon processor family"
 460         depends on SPARC32
 461         ---help---
 462           If you say Y here if you are running on a SPARC-LEON processor.
 463           The LEON processor is a synthesizable VHDL model of the
 464           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 465           IP cores that are distributed under GPL. GRLIB can be downloaded
 466           from www.gaisler.com. You can download a sparc-linux cross-compilation
 467           toolchain at www.gaisler.com.
 468
 469 endmenu
 470
 471 menu "Bus options (PCI etc.)"
 472 config SBUS
 473         bool
 474         default y
 475
 476 config SBUSCHAR
 477         bool
 478         default y
 479
 480 config SUN_LDOMS
 481         bool "Sun Logical Domains support"
 482         depends on SPARC64
 483         help
 484           Say Y here is you want to support virtual devices via
 485           Logical Domains.
 486
 487 config PCI
 488         bool "Support for PCI and PS/2 keyboard/mouse"
 489         help
 490           Find out whether your system includes a PCI bus. PCI is the name of
 491           a bus system, i.e. the way the CPU talks to the other stuff inside
 492           your box.  If you say Y here, the kernel will include drivers and
 493           infrastructure code to support PCI bus devices.
 494
 495           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 496           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 497           All of these platforms are extremely obscure, so say N if unsure.
 498
 499 config PCI_DOMAINS
 500         def_bool PCI if SPARC64
 501
 502 config PCI_SYSCALL
 503         def_bool PCI
 504
 505 source "drivers/pci/Kconfig"
 506
 507 source "drivers/pcmcia/Kconfig"
 508
 509 config SUN_OPENPROMFS
 510         tristate "Openprom tree appears in /proc/openprom"
 511         help
 512           If you say Y, the OpenPROM device tree will be available as a
 513           virtual file system, which you can mount to /proc/openprom by "mount
 514           -t openpromfs none /proc/openprom".
 515
 516           To compile the /proc/openprom support as a module, choose M here: the
 517           module will be called openpromfs.
 518
 519           Only choose N if you know in advance that you will not need to modify
 520           OpenPROM settings on the running system.
 521
 522 # Makefile helpers
 523 config SPARC32_PCI
 524         bool
 525         default y
 526         depends on SPARC32 && PCI
 527
 528 config SPARC64_PCI
 529         bool
 530         default y
 531         depends on SPARC64 && PCI
 532
 533 endmenu
 534
 535 menu "Executable file formats"
 536
 537 source "fs/Kconfig.binfmt"
 538
 539 config COMPAT
 540         bool
 541         depends on SPARC64
 542         default y
 543         select COMPAT_BINFMT_ELF
 544
 545 config SYSVIPC_COMPAT
 546         bool
 547         depends on COMPAT && SYSVIPC
 548         default y
 549
 550 endmenu
 551
 552 source "net/Kconfig"
 553
 554 source "drivers/Kconfig"
 555
 556 source "drivers/sbus/char/Kconfig"
 557
 558 source "fs/Kconfig"
 559
 560 source "arch/sparc/Kconfig.debug"
 561
 562 source "security/Kconfig"
 563
 564 source "crypto/Kconfig"
 565
 566 source "lib/Kconfig"