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         select HAVE_OPROFILE
  12         select HAVE_KPROBES
  13
  14 config SPARC64
  15         bool
  16         default y
  17         help
  18           SPARC is a family of RISC microprocessors designed and marketed by
  19           Sun Microsystems, incorporated.  This port covers the newer 64-bit
  20           UltraSPARC.  The UltraLinux project maintains both the SPARC32 and
  21           SPARC64 ports; its web page is available at
  22           <http://www.ultralinux.org/>.
  23
  24 config GENERIC_TIME
  25         bool
  26         default y
  27
  28 config GENERIC_CMOS_UPDATE
  29         bool
  30         default y
  31
  32 config GENERIC_CLOCKEVENTS
  33         bool
  34         default y
  35
  36 config 64BIT
  37         def_bool y
  38
  39 config MMU
  40         bool
  41         default y
  42
  43 config QUICKLIST
  44         bool
  45         default y
  46
  47 config STACKTRACE_SUPPORT
  48         bool
  49         default y
  50
  51 config LOCKDEP_SUPPORT
  52         bool
  53         default y
  54
  55 config ARCH_MAY_HAVE_PC_FDC
  56         bool
  57         default y
  58
  59 config ARCH_HAS_ILOG2_U32
  60         bool
  61         default n
  62
  63 config ARCH_HAS_ILOG2_U64
  64         bool
  65         default n
  66
  67 config AUDIT_ARCH
  68         bool
  69         default y
  70
  71 config HAVE_SETUP_PER_CPU_AREA
  72         def_bool y
  73
  74 config ARCH_NO_VIRT_TO_BUS
  75         def_bool y
  76
  77 config OF
  78         def_bool y
  79
  80 config GENERIC_HARDIRQS_NO__DO_IRQ
  81         bool
  82         def_bool y
  83
  84 config ARCH_SUPPORTS_AOUT
  85         def_bool y
  86
  87 choice
  88         prompt "Kernel page size"
  89         default SPARC64_PAGE_SIZE_8KB
  90
  91 config SPARC64_PAGE_SIZE_8KB
  92         bool "8KB"
  93         help
  94           This lets you select the page size of the kernel.
  95
  96           8KB and 64KB work quite well, since Sparc ELF sections
  97           provide for up to 64KB alignment.
  98
  99           Therefore, 512KB and 4MB are for expert hackers only.
 100
 101           If you don't know what to do, choose 8KB.
 102
 103 config SPARC64_PAGE_SIZE_64KB
 104         bool "64KB"
 105
 106 config SPARC64_PAGE_SIZE_512KB
 107         bool "512KB"
 108
 109 config SPARC64_PAGE_SIZE_4MB
 110         bool "4MB"
 111
 112 endchoice
 113
 114 config SECCOMP
 115         bool "Enable seccomp to safely compute untrusted bytecode"
 116         depends on PROC_FS
 117         default y
 118         help
 119           This kernel feature is useful for number crunching applications
 120           that may need to compute untrusted bytecode during their
 121           execution. By using pipes or other transports made available to
 122           the process as file descriptors supporting the read/write
 123           syscalls, it's possible to isolate those applications in
 124           their own address space using seccomp. Once seccomp is
 125           enabled via /proc/<pid>/seccomp, it cannot be disabled
 126           and the task is only allowed to execute a few safe syscalls
 127           defined by each seccomp mode.
 128
 129           If unsure, say Y. Only embedded should say N here.
 130
 131 source kernel/Kconfig.hz
 132
 133 config HOTPLUG_CPU
 134         bool "Support for hot-pluggable CPUs"
 135         depends on SMP
 136         select HOTPLUG
 137         ---help---
 138           Say Y here to experiment with turning CPUs off and on.  CPUs
 139           can be controlled through /sys/devices/system/cpu/cpu#.
 140           Say N if you want to disable CPU hotplug.
 141
 142 source "init/Kconfig"
 143
 144 config SYSVIPC_COMPAT
 145         bool
 146         depends on COMPAT && SYSVIPC
 147         default y
 148
 149 config GENERIC_HARDIRQS
 150         bool
 151         default y
 152
 153 menu "General machine setup"
 154
 155 source "kernel/time/Kconfig"
 156
 157 config SMP
 158         bool "Symmetric multi-processing support"
 159         ---help---
 160           This enables support for systems with more than one CPU. If you have
 161           a system with only one CPU, say N. If you have a system with more than
 162           one CPU, say Y.
 163
 164           If you say N here, the kernel will run on single and multiprocessor
 165           machines, but will use only one CPU of a multiprocessor machine. If
 166           you say Y here, the kernel will run on many, but not all,
 167           singleprocessor machines. On a singleprocessor machine, the kernel
 168           will run faster if you say N here.
 169
 170           People using multiprocessor machines who say Y here should also say
 171           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 172           Management" code will be disabled if you say Y here.
 173
 174           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 175           available at <http://www.tldp.org/docs.html#howto>.
 176
 177           If you don't know what to do here, say N.
 178
 179 config NR_CPUS
 180         int "Maximum number of CPUs (2-1024)"
 181         range 2 1024
 182         depends on SMP
 183         default "64"
 184
 185 source "drivers/cpufreq/Kconfig"
 186
 187 config US3_FREQ
 188         tristate "UltraSPARC-III CPU Frequency driver"
 189         depends on CPU_FREQ
 190         select CPU_FREQ_TABLE
 191         help
 192           This adds the CPUFreq driver for UltraSPARC-III processors.
 193
 194           For details, take a look at <file:Documentation/cpu-freq>.
 195
 196           If in doubt, say N.
 197
 198 config US2E_FREQ
 199         tristate "UltraSPARC-IIe CPU Frequency driver"
 200         depends on CPU_FREQ
 201         select CPU_FREQ_TABLE
 202         help
 203           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 204
 205           For details, take a look at <file:Documentation/cpu-freq>.
 206
 207           If in doubt, say N.
 208
 209 # Global things across all Sun machines.
 210 config GENERIC_LOCKBREAK
 211         bool
 212         default y
 213         depends on SMP && PREEMPT
 214
 215 config RWSEM_GENERIC_SPINLOCK
 216         bool
 217
 218 config RWSEM_XCHGADD_ALGORITHM
 219         bool
 220         default y
 221
 222 config GENERIC_FIND_NEXT_BIT
 223         bool
 224         default y
 225
 226 config GENERIC_HWEIGHT
 227         bool
 228         default y if !ULTRA_HAS_POPULATION_COUNT
 229
 230 config GENERIC_CALIBRATE_DELAY
 231         bool
 232         default y
 233
 234 choice
 235         prompt "SPARC64 Huge TLB Page Size"
 236         depends on HUGETLB_PAGE
 237         default HUGETLB_PAGE_SIZE_4MB
 238
 239 config HUGETLB_PAGE_SIZE_4MB
 240         bool "4MB"
 241
 242 config HUGETLB_PAGE_SIZE_512K
 243         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
 244         bool "512K"
 245
 246 config HUGETLB_PAGE_SIZE_64K
 247         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
 248         bool "64K"
 249
 250 endchoice
 251
 252 endmenu
 253
 254 config ARCH_SELECT_MEMORY_MODEL
 255         def_bool y
 256
 257 config ARCH_SPARSEMEM_ENABLE
 258         def_bool y
 259         select SPARSEMEM_VMEMMAP_ENABLE
 260
 261 config ARCH_SPARSEMEM_DEFAULT
 262         def_bool y
 263
 264 source "mm/Kconfig"
 265
 266 config ISA
 267         bool
 268         help
 269           Find out whether you have ISA slots on your motherboard.  ISA is the
 270           name of a bus system, i.e. the way the CPU talks to the other stuff
 271           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 272           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 273           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 274
 275 config ISAPNP
 276         bool
 277         help
 278           Say Y here if you would like support for ISA Plug and Play devices.
 279           Some information is in <file:Documentation/isapnp.txt>.
 280
 281           To compile this driver as a module, choose M here: the
 282           module will be called isapnp.
 283
 284           If unsure, say Y.
 285
 286 config EISA
 287         bool
 288         ---help---
 289           The Extended Industry Standard Architecture (EISA) bus was
 290           developed as an open alternative to the IBM MicroChannel bus.
 291
 292           The EISA bus provided some of the features of the IBM MicroChannel
 293           bus while maintaining backward compatibility with cards made for
 294           the older ISA bus.  The EISA bus saw limited use between 1988 and
 295           1995 when it was made obsolete by the PCI bus.
 296
 297           Say Y here if you are building a kernel for an EISA-based machine.
 298
 299           Otherwise, say N.
 300
 301 config MCA
 302         bool
 303         help
 304           MicroChannel Architecture is found in some IBM PS/2 machines and
 305           laptops.  It is a bus system similar to PCI or ISA. See
 306           <file:Documentation/mca.txt> (and especially the web page given
 307           there) before attempting to build an MCA bus kernel.
 308
 309 config PCMCIA
 310         tristate
 311         ---help---
 312           Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
 313           computer.  These are credit-card size devices such as network cards,
 314           modems or hard drives often used with laptops computers.  There are
 315           actually two varieties of these cards: the older 16 bit PCMCIA cards
 316           and the newer 32 bit CardBus cards.  If you want to use CardBus
 317           cards, you need to say Y here and also to "CardBus support" below.
 318
 319           To use your PC-cards, you will need supporting software from David
 320           Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
 321           for location).  Please also read the PCMCIA-HOWTO, available from
 322           <http://www.tldp.org/docs.html#howto>.
 323
 324           To compile this driver as modules, choose M here: the
 325           modules will be called pcmcia_core and ds.
 326
 327 config SBUS
 328         bool
 329         default y
 330
 331 config SBUSCHAR
 332         bool
 333         default y
 334
 335 config SUN_AUXIO
 336         bool
 337         default y
 338
 339 config SUN_IO
 340         bool
 341         default y
 342
 343 config SUN_LDOMS
 344         bool "Sun Logical Domains support"
 345         help
 346           Say Y here is you want to support virtual devices via
 347           Logical Domains.
 348
 349 config PCI
 350         bool "PCI support"
 351         select ARCH_SUPPORTS_MSI
 352         help
 353           Find out whether you have a PCI motherboard. PCI is the name of a
 354           bus system, i.e. the way the CPU talks to the other stuff inside
 355           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 356           VESA. If you have PCI, say Y, otherwise N.
 357
 358 config PCI_DOMAINS
 359         def_bool PCI
 360
 361 config PCI_SYSCALL
 362         def_bool PCI
 363
 364 source "drivers/pci/Kconfig"
 365
 366 config SUN_OPENPROMFS
 367         tristate "Openprom tree appears in /proc/openprom"
 368         help
 369           If you say Y, the OpenPROM device tree will be available as a
 370           virtual file system, which you can mount to /proc/openprom by "mount
 371           -t openpromfs none /proc/openprom".
 372
 373           To compile the /proc/openprom support as a module, choose M here: the
 374           module will be called openpromfs.  If unsure, choose M.
 375
 376 config SPARC32_COMPAT
 377         bool "Kernel support for Linux/Sparc 32bit binary compatibility"
 378         help
 379           This allows you to run 32-bit binaries on your Ultra.
 380           Everybody wants this; say Y.
 381
 382 config COMPAT
 383         bool
 384         depends on SPARC32_COMPAT
 385         default y
 386
 387 config BINFMT_ELF32
 388         bool "Kernel support for 32-bit ELF binaries"
 389         depends on SPARC32_COMPAT
 390         help
 391           This allows you to run 32-bit Linux/ELF binaries on your Ultra.
 392           Everybody wants this; say Y.
 393
 394 config BINFMT_AOUT32
 395         bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
 396         depends on SPARC32_COMPAT && ARCH_SUPPORTS_AOUT
 397         help
 398           This allows you to run 32-bit a.out format binaries on your Ultra.
 399           If you want to run SunOS binaries (see SunOS binary emulation below)
 400           or other a.out binaries, say Y. If unsure, say N.
 401
 402 menu "Executable file formats"
 403
 404 source "fs/Kconfig.binfmt"
 405
 406 config SUNOS_EMUL
 407         bool "SunOS binary emulation"
 408         depends on BINFMT_AOUT32
 409         help
 410           This allows you to run most SunOS binaries.  If you want to do this,
 411           say Y here and place appropriate files in /usr/gnemul/sunos. See
 412           <http://www.ultralinux.org/faq.html> for more information.  If you
 413           want to run SunOS binaries on an Ultra you must also say Y to
 414           "Kernel support for 32-bit a.out binaries" above.
 415
 416 config SOLARIS_EMUL
 417         tristate "Solaris binary emulation (EXPERIMENTAL)"
 418         depends on SPARC32_COMPAT && NET && EXPERIMENTAL
 419         help
 420           This is experimental code which will enable you to run (many)
 421           Solaris binaries on your SPARC Linux machine.
 422
 423           To compile this code as a module, choose M here: the
 424           module will be called solaris.
 425
 426 endmenu
 427
 428 config SCHED_SMT
 429         bool "SMT (Hyperthreading) scheduler support"
 430         depends on SMP
 431         default y
 432         help
 433           SMT scheduler support improves the CPU scheduler's decision making
 434           when dealing with UltraSPARC cpus at a cost of slightly increased
 435           overhead in some places. If unsure say N here.
 436
 437 config SCHED_MC
 438         bool "Multi-core scheduler support"
 439         depends on SMP
 440         default y
 441         help
 442           Multi-core scheduler support improves the CPU scheduler's decision
 443           making when dealing with multi-core CPU chips at a cost of slightly
 444           increased overhead in some places. If unsure say N here.
 445
 446 source "kernel/Kconfig.preempt"
 447
 448 config CMDLINE_BOOL
 449         bool "Default bootloader kernel arguments"
 450
 451 config CMDLINE
 452         string "Initial kernel command string"
 453         depends on CMDLINE_BOOL
 454         default "console=ttyS0,9600 root=/dev/sda1"
 455         help
 456           Say Y here if you want to be able to pass default arguments to
 457           the kernel. This will be overridden by the bootloader, if you
 458           use one (such as SILO). This is most useful if you want to boot
 459           a kernel from TFTP, and want default options to be available
 460           with having them passed on the command line.
 461
 462           NOTE: This option WILL override the PROM bootargs setting!
 463
 464 source "net/Kconfig"
 465
 466 source "drivers/Kconfig"
 467
 468 source "drivers/sbus/char/Kconfig"
 469
 470 source "fs/Kconfig"
 471
 472 source "arch/sparc64/Kconfig.debug"
 473
 474 source "security/Kconfig"
 475
 476 source "crypto/Kconfig"
 477
 478 source "lib/Kconfig"