arch/sparc64/Kconfig

   1 # $Id: config.in,v 1.158 2002/01/24 22:14:44 davem Exp $
   2 # For a description of the syntax of this configuration file,
   3 # see the Configure script.
   4 #
   5
   6 mainmenu "Linux/UltraSPARC Kernel Configuration"
   7
   8 config SPARC
   9         bool
  10         default y
  11
  12 config SPARC64
  13         bool
  14         default y
  15         help
  16           SPARC is a family of RISC microprocessors designed and marketed by
  17           Sun Microsystems, incorporated.  This port covers the newer 64-bit
  18           UltraSPARC.  The UltraLinux project maintains both the SPARC32 and
  19           SPARC64 ports; its web page is available at
  20           <http://www.ultralinux.org/>.
  21
  22 config GENERIC_TIME
  23         bool
  24         default y
  25
  26 config GENERIC_CMOS_UPDATE
  27         bool
  28         default y
  29
  30 config GENERIC_CLOCKEVENTS
  31         bool
  32         default y
  33
  34 config 64BIT
  35         def_bool y
  36
  37 config MMU
  38         bool
  39         default y
  40
  41 config QUICKLIST
  42         bool
  43         default y
  44
  45 config STACKTRACE_SUPPORT
  46         bool
  47         default y
  48
  49 config LOCKDEP_SUPPORT
  50         bool
  51         default y
  52
  53 config ARCH_MAY_HAVE_PC_FDC
  54         bool
  55         default y
  56
  57 config ARCH_HAS_ILOG2_U32
  58         bool
  59         default n
  60
  61 config ARCH_HAS_ILOG2_U64
  62         bool
  63         default n
  64
  65 config AUDIT_ARCH
  66         bool
  67         default y
  68
  69 config HAVE_SETUP_PER_CPU_AREA
  70         def_bool y
  71
  72 config ARCH_NO_VIRT_TO_BUS
  73         def_bool y
  74
  75 config OF
  76         def_bool y
  77
  78 config GENERIC_HARDIRQS_NO__DO_IRQ
  79         bool
  80         def_bool y
  81
  82 choice
  83         prompt "Kernel page size"
  84         default SPARC64_PAGE_SIZE_8KB
  85
  86 config SPARC64_PAGE_SIZE_8KB
  87         bool "8KB"
  88         help
  89           This lets you select the page size of the kernel.
  90
  91           8KB and 64KB work quite well, since Sparc ELF sections
  92           provide for up to 64KB alignment.
  93
  94           Therefore, 512KB and 4MB are for expert hackers only.
  95
  96           If you don't know what to do, choose 8KB.
  97
  98 config SPARC64_PAGE_SIZE_64KB
  99         bool "64KB"
 100
 101 config SPARC64_PAGE_SIZE_512KB
 102         bool "512KB"
 103
 104 config SPARC64_PAGE_SIZE_4MB
 105         bool "4MB"
 106
 107 endchoice
 108
 109 config SECCOMP
 110         bool "Enable seccomp to safely compute untrusted bytecode"
 111         depends on PROC_FS
 112         default y
 113         help
 114           This kernel feature is useful for number crunching applications
 115           that may need to compute untrusted bytecode during their
 116           execution. By using pipes or other transports made available to
 117           the process as file descriptors supporting the read/write
 118           syscalls, it's possible to isolate those applications in
 119           their own address space using seccomp. Once seccomp is
 120           enabled via /proc/<pid>/seccomp, it cannot be disabled
 121           and the task is only allowed to execute a few safe syscalls
 122           defined by each seccomp mode.
 123
 124           If unsure, say Y. Only embedded should say N here.
 125
 126 source kernel/Kconfig.hz
 127
 128 config HOTPLUG_CPU
 129         bool "Support for hot-pluggable CPUs"
 130         depends on SMP
 131         select HOTPLUG
 132         ---help---
 133           Say Y here to experiment with turning CPUs off and on.  CPUs
 134           can be controlled through /sys/devices/system/cpu/cpu#.
 135           Say N if you want to disable CPU hotplug.
 136
 137 source "init/Kconfig"
 138
 139 config SYSVIPC_COMPAT
 140         bool
 141         depends on COMPAT && SYSVIPC
 142         default y
 143
 144 config GENERIC_HARDIRQS
 145         bool
 146         default y
 147
 148 menu "General machine setup"
 149
 150 source "kernel/time/Kconfig"
 151
 152 config SMP
 153         bool "Symmetric multi-processing support"
 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 than
 157           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 (2-1024)"
 176         range 2 1024
 177         depends on SMP
 178         default "64"
 179
 180 source "drivers/cpufreq/Kconfig"
 181
 182 config US3_FREQ
 183         tristate "UltraSPARC-III CPU Frequency driver"
 184         depends on CPU_FREQ
 185         select CPU_FREQ_TABLE
 186         help
 187           This adds the CPUFreq driver for UltraSPARC-III processors.
 188
 189           For details, take a look at <file:Documentation/cpu-freq>.
 190
 191           If in doubt, say N.
 192
 193 config US2E_FREQ
 194         tristate "UltraSPARC-IIe CPU Frequency driver"
 195         depends on CPU_FREQ
 196         select CPU_FREQ_TABLE
 197         help
 198           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 199
 200           For details, take a look at <file:Documentation/cpu-freq>.
 201
 202           If in doubt, say N.
 203
 204 # Global things across all Sun machines.
 205 config GENERIC_LOCKBREAK
 206         bool
 207         default y
 208         depends on SMP && PREEMPT
 209
 210 config RWSEM_GENERIC_SPINLOCK
 211         bool
 212
 213 config RWSEM_XCHGADD_ALGORITHM
 214         bool
 215         default y
 216
 217 config GENERIC_FIND_NEXT_BIT
 218         bool
 219         default y
 220
 221 config GENERIC_HWEIGHT
 222         bool
 223         default y if !ULTRA_HAS_POPULATION_COUNT
 224
 225 config GENERIC_CALIBRATE_DELAY
 226         bool
 227         default y
 228
 229 choice
 230         prompt "SPARC64 Huge TLB Page Size"
 231         depends on HUGETLB_PAGE
 232         default HUGETLB_PAGE_SIZE_4MB
 233
 234 config HUGETLB_PAGE_SIZE_4MB
 235         bool "4MB"
 236
 237 config HUGETLB_PAGE_SIZE_512K
 238         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
 239         bool "512K"
 240
 241 config HUGETLB_PAGE_SIZE_64K
 242         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
 243         bool "64K"
 244
 245 endchoice
 246
 247 endmenu
 248
 249 config ARCH_SELECT_MEMORY_MODEL
 250         def_bool y
 251
 252 config ARCH_SPARSEMEM_ENABLE
 253         def_bool y
 254         select SPARSEMEM_VMEMMAP_ENABLE
 255
 256 config ARCH_SPARSEMEM_DEFAULT
 257         def_bool y
 258
 259 source "mm/Kconfig"
 260
 261 config ISA
 262         bool
 263         help
 264           Find out whether you have ISA slots on your motherboard.  ISA is the
 265           name of a bus system, i.e. the way the CPU talks to the other stuff
 266           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 267           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 268           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 269
 270 config ISAPNP
 271         bool
 272         help
 273           Say Y here if you would like support for ISA Plug and Play devices.
 274           Some information is in <file:Documentation/isapnp.txt>.
 275
 276           To compile this driver as a module, choose M here: the
 277           module will be called isapnp.
 278
 279           If unsure, say Y.
 280
 281 config EISA
 282         bool
 283         ---help---
 284           The Extended Industry Standard Architecture (EISA) bus was
 285           developed as an open alternative to the IBM MicroChannel bus.
 286
 287           The EISA bus provided some of the features of the IBM MicroChannel
 288           bus while maintaining backward compatibility with cards made for
 289           the older ISA bus.  The EISA bus saw limited use between 1988 and
 290           1995 when it was made obsolete by the PCI bus.
 291
 292           Say Y here if you are building a kernel for an EISA-based machine.
 293
 294           Otherwise, say N.
 295
 296 config MCA
 297         bool
 298         help
 299           MicroChannel Architecture is found in some IBM PS/2 machines and
 300           laptops.  It is a bus system similar to PCI or ISA. See
 301           <file:Documentation/mca.txt> (and especially the web page given
 302           there) before attempting to build an MCA bus kernel.
 303
 304 config PCMCIA
 305         tristate
 306         ---help---
 307           Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
 308           computer.  These are credit-card size devices such as network cards,
 309           modems or hard drives often used with laptops computers.  There are
 310           actually two varieties of these cards: the older 16 bit PCMCIA cards
 311           and the newer 32 bit CardBus cards.  If you want to use CardBus
 312           cards, you need to say Y here and also to "CardBus support" below.
 313
 314           To use your PC-cards, you will need supporting software from David
 315           Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
 316           for location).  Please also read the PCMCIA-HOWTO, available from
 317           <http://www.tldp.org/docs.html#howto>.
 318
 319           To compile this driver as modules, choose M here: the
 320           modules will be called pcmcia_core and ds.
 321
 322 config SBUS
 323         bool
 324         default y
 325
 326 config SBUSCHAR
 327         bool
 328         default y
 329
 330 config SUN_AUXIO
 331         bool
 332         default y
 333
 334 config SUN_IO
 335         bool
 336         default y
 337
 338 config SUN_LDOMS
 339         bool "Sun Logical Domains support"
 340         help
 341           Say Y here is you want to support virtual devices via
 342           Logical Domains.
 343
 344 config PCI
 345         bool "PCI support"
 346         select ARCH_SUPPORTS_MSI
 347         help
 348           Find out whether you have a PCI motherboard. PCI is the name of a
 349           bus system, i.e. the way the CPU talks to the other stuff inside
 350           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 351           VESA. If you have PCI, say Y, otherwise N.
 352
 353 config PCI_DOMAINS
 354         def_bool PCI
 355
 356 config PCI_SYSCALL
 357         def_bool PCI
 358
 359 source "drivers/pci/Kconfig"
 360
 361 config SUN_OPENPROMFS
 362         tristate "Openprom tree appears in /proc/openprom"
 363         help
 364           If you say Y, the OpenPROM device tree will be available as a
 365           virtual file system, which you can mount to /proc/openprom by "mount
 366           -t openpromfs none /proc/openprom".
 367
 368           To compile the /proc/openprom support as a module, choose M here: the
 369           module will be called openpromfs.  If unsure, choose M.
 370
 371 config SPARC32_COMPAT
 372         bool "Kernel support for Linux/Sparc 32bit binary compatibility"
 373         help
 374           This allows you to run 32-bit binaries on your Ultra.
 375           Everybody wants this; say Y.
 376
 377 config COMPAT
 378         bool
 379         depends on SPARC32_COMPAT
 380         default y
 381
 382 config BINFMT_ELF32
 383         bool "Kernel support for 32-bit ELF binaries"
 384         depends on SPARC32_COMPAT
 385         help
 386           This allows you to run 32-bit Linux/ELF binaries on your Ultra.
 387           Everybody wants this; say Y.
 388
 389 config BINFMT_AOUT32
 390         bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
 391         depends on SPARC32_COMPAT
 392         help
 393           This allows you to run 32-bit a.out format binaries on your Ultra.
 394           If you want to run SunOS binaries (see SunOS binary emulation below)
 395           or other a.out binaries, say Y. If unsure, say N.
 396
 397 menu "Executable file formats"
 398
 399 source "fs/Kconfig.binfmt"
 400
 401 config SUNOS_EMUL
 402         bool "SunOS binary emulation"
 403         depends on BINFMT_AOUT32
 404         help
 405           This allows you to run most SunOS binaries.  If you want to do this,
 406           say Y here and place appropriate files in /usr/gnemul/sunos. See
 407           <http://www.ultralinux.org/faq.html> for more information.  If you
 408           want to run SunOS binaries on an Ultra you must also say Y to
 409           "Kernel support for 32-bit a.out binaries" above.
 410
 411 config SOLARIS_EMUL
 412         tristate "Solaris binary emulation (EXPERIMENTAL)"
 413         depends on SPARC32_COMPAT && NET && EXPERIMENTAL
 414         help
 415           This is experimental code which will enable you to run (many)
 416           Solaris binaries on your SPARC Linux machine.
 417
 418           To compile this code as a module, choose M here: the
 419           module will be called solaris.
 420
 421 endmenu
 422
 423 config SCHED_SMT
 424         bool "SMT (Hyperthreading) scheduler support"
 425         depends on SMP
 426         default y
 427         help
 428           SMT scheduler support improves the CPU scheduler's decision making
 429           when dealing with UltraSPARC cpus at a cost of slightly increased
 430           overhead in some places. If unsure say N here.
 431
 432 config SCHED_MC
 433         bool "Multi-core scheduler support"
 434         depends on SMP
 435         default y
 436         help
 437           Multi-core scheduler support improves the CPU scheduler's decision
 438           making when dealing with multi-core CPU chips at a cost of slightly
 439           increased overhead in some places. If unsure say N here.
 440
 441 source "kernel/Kconfig.preempt"
 442
 443 config CMDLINE_BOOL
 444         bool "Default bootloader kernel arguments"
 445
 446 config CMDLINE
 447         string "Initial kernel command string"
 448         depends on CMDLINE_BOOL
 449         default "console=ttyS0,9600 root=/dev/sda1"
 450         help
 451           Say Y here if you want to be able to pass default arguments to
 452           the kernel. This will be overridden by the bootloader, if you
 453           use one (such as SILO). This is most useful if you want to boot
 454           a kernel from TFTP, and want default options to be available
 455           with having them passed on the command line.
 456
 457           NOTE: This option WILL override the PROM bootargs setting!
 458
 459 source "net/Kconfig"
 460
 461 source "drivers/Kconfig"
 462
 463 source "drivers/sbus/char/Kconfig"
 464
 465 source "fs/Kconfig"
 466
 467 source "kernel/Kconfig.instrumentation"
 468
 469 source "arch/sparc64/Kconfig.debug"
 470
 471 source "security/Kconfig"
 472
 473 source "crypto/Kconfig"
 474
 475 source "lib/Kconfig"