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_CLOCKEVENTS
  27         bool
  28         default y
  29
  30 config 64BIT
  31         def_bool y
  32
  33 config MMU
  34         bool
  35         default y
  36
  37 config QUICKLIST
  38         bool
  39         default y
  40
  41 config STACKTRACE_SUPPORT
  42         bool
  43         default y
  44
  45 config LOCKDEP_SUPPORT
  46         bool
  47         default y
  48
  49 config ARCH_MAY_HAVE_PC_FDC
  50         bool
  51         default y
  52
  53 config ARCH_HAS_ILOG2_U32
  54         bool
  55         default n
  56
  57 config ARCH_HAS_ILOG2_U64
  58         bool
  59         default n
  60
  61 config AUDIT_ARCH
  62         bool
  63         default y
  64
  65 choice
  66         prompt "Kernel page size"
  67         default SPARC64_PAGE_SIZE_8KB
  68
  69 config SPARC64_PAGE_SIZE_8KB
  70         bool "8KB"
  71         help
  72           This lets you select the page size of the kernel.
  73
  74           8KB and 64KB work quite well, since Sparc ELF sections
  75           provide for up to 64KB alignment.
  76
  77           Therefore, 512KB and 4MB are for expert hackers only.
  78
  79           If you don't know what to do, choose 8KB.
  80
  81 config SPARC64_PAGE_SIZE_64KB
  82         bool "64KB"
  83
  84 config SPARC64_PAGE_SIZE_512KB
  85         bool "512KB"
  86
  87 config SPARC64_PAGE_SIZE_4MB
  88         bool "4MB"
  89
  90 endchoice
  91
  92 config SECCOMP
  93         bool "Enable seccomp to safely compute untrusted bytecode"
  94         depends on PROC_FS
  95         default y
  96         help
  97           This kernel feature is useful for number crunching applications
  98           that may need to compute untrusted bytecode during their
  99           execution. By using pipes or other transports made available to
 100           the process as file descriptors supporting the read/write
 101           syscalls, it's possible to isolate those applications in
 102           their own address space using seccomp. Once seccomp is
 103           enabled via /proc/<pid>/seccomp, it cannot be disabled
 104           and the task is only allowed to execute a few safe syscalls
 105           defined by each seccomp mode.
 106
 107           If unsure, say Y. Only embedded should say N here.
 108
 109 source kernel/Kconfig.hz
 110
 111 config HOTPLUG_CPU
 112         bool "Support for hot-pluggable CPUs"
 113         depends on SMP
 114         select HOTPLUG
 115         ---help---
 116           Say Y here to experiment with turning CPUs off and on.  CPUs
 117           can be controlled through /sys/devices/system/cpu/cpu#.
 118           Say N if you want to disable CPU hotplug.
 119
 120 source "init/Kconfig"
 121
 122 config SYSVIPC_COMPAT
 123         bool
 124         depends on COMPAT && SYSVIPC
 125         default y
 126
 127 config GENERIC_HARDIRQS
 128         bool
 129         default y
 130
 131 menu "General machine setup"
 132
 133 source "kernel/time/Kconfig"
 134
 135 config SMP
 136         bool "Symmetric multi-processing support"
 137         ---help---
 138           This enables support for systems with more than one CPU. If you have
 139           a system with only one CPU, say N. If you have a system with more than
 140           one CPU, say Y.
 141
 142           If you say N here, the kernel will run on single and multiprocessor
 143           machines, but will use only one CPU of a multiprocessor machine. If
 144           you say Y here, the kernel will run on many, but not all,
 145           singleprocessor machines. On a singleprocessor machine, the kernel
 146           will run faster if you say N here.
 147
 148           People using multiprocessor machines who say Y here should also say
 149           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 150           Management" code will be disabled if you say Y here.
 151
 152           See also the <file:Documentation/smp.txt>,
 153           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
 154           <http://www.tldp.org/docs.html#howto>.
 155
 156           If you don't know what to do here, say N.
 157
 158 config NR_CPUS
 159         int "Maximum number of CPUs (2-1024)"
 160         range 2 1024
 161         depends on SMP
 162         default "64"
 163
 164 source "drivers/cpufreq/Kconfig"
 165
 166 config US3_FREQ
 167         tristate "UltraSPARC-III CPU Frequency driver"
 168         depends on CPU_FREQ
 169         select CPU_FREQ_TABLE
 170         help
 171           This adds the CPUFreq driver for UltraSPARC-III processors.
 172
 173           For details, take a look at <file:Documentation/cpu-freq>.
 174
 175           If in doubt, say N.
 176
 177 config US2E_FREQ
 178         tristate "UltraSPARC-IIe CPU Frequency driver"
 179         depends on CPU_FREQ
 180         select CPU_FREQ_TABLE
 181         help
 182           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 183
 184           For details, take a look at <file:Documentation/cpu-freq>.
 185
 186           If in doubt, say N.
 187
 188 # Global things across all Sun machines.
 189 config RWSEM_GENERIC_SPINLOCK
 190         bool
 191
 192 config RWSEM_XCHGADD_ALGORITHM
 193         bool
 194         default y
 195
 196 config GENERIC_FIND_NEXT_BIT
 197         bool
 198         default y
 199
 200 config GENERIC_HWEIGHT
 201         bool
 202         default y if !ULTRA_HAS_POPULATION_COUNT
 203
 204 config GENERIC_CALIBRATE_DELAY
 205         bool
 206         default y
 207
 208 choice
 209         prompt "SPARC64 Huge TLB Page Size"
 210         depends on HUGETLB_PAGE
 211         default HUGETLB_PAGE_SIZE_4MB
 212
 213 config HUGETLB_PAGE_SIZE_4MB
 214         bool "4MB"
 215
 216 config HUGETLB_PAGE_SIZE_512K
 217         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
 218         bool "512K"
 219
 220 config HUGETLB_PAGE_SIZE_64K
 221         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
 222         bool "64K"
 223
 224 endchoice
 225
 226 endmenu
 227
 228 config ARCH_SELECT_MEMORY_MODEL
 229         def_bool y
 230
 231 config ARCH_SPARSEMEM_ENABLE
 232         def_bool y
 233
 234 config ARCH_SPARSEMEM_DEFAULT
 235         def_bool y
 236         select SPARSEMEM_STATIC
 237
 238 source "mm/Kconfig"
 239
 240 config ISA
 241         bool
 242         help
 243           Find out whether you have ISA slots on your motherboard.  ISA is the
 244           name of a bus system, i.e. the way the CPU talks to the other stuff
 245           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 246           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 247           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 248
 249 config ISAPNP
 250         bool
 251         help
 252           Say Y here if you would like support for ISA Plug and Play devices.
 253           Some information is in <file:Documentation/isapnp.txt>.
 254
 255           To compile this driver as a module, choose M here: the
 256           module will be called isapnp.
 257
 258           If unsure, say Y.
 259
 260 config EISA
 261         bool
 262         ---help---
 263           The Extended Industry Standard Architecture (EISA) bus was
 264           developed as an open alternative to the IBM MicroChannel bus.
 265
 266           The EISA bus provided some of the features of the IBM MicroChannel
 267           bus while maintaining backward compatibility with cards made for
 268           the older ISA bus.  The EISA bus saw limited use between 1988 and
 269           1995 when it was made obsolete by the PCI bus.
 270
 271           Say Y here if you are building a kernel for an EISA-based machine.
 272
 273           Otherwise, say N.
 274
 275 config MCA
 276         bool
 277         help
 278           MicroChannel Architecture is found in some IBM PS/2 machines and
 279           laptops.  It is a bus system similar to PCI or ISA. See
 280           <file:Documentation/mca.txt> (and especially the web page given
 281           there) before attempting to build an MCA bus kernel.
 282
 283 config PCMCIA
 284         tristate
 285         ---help---
 286           Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
 287           computer.  These are credit-card size devices such as network cards,
 288           modems or hard drives often used with laptops computers.  There are
 289           actually two varieties of these cards: the older 16 bit PCMCIA cards
 290           and the newer 32 bit CardBus cards.  If you want to use CardBus
 291           cards, you need to say Y here and also to "CardBus support" below.
 292
 293           To use your PC-cards, you will need supporting software from David
 294           Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
 295           for location).  Please also read the PCMCIA-HOWTO, available from
 296           <http://www.tldp.org/docs.html#howto>.
 297
 298           To compile this driver as modules, choose M here: the
 299           modules will be called pcmcia_core and ds.
 300
 301 config SBUS
 302         bool
 303         default y
 304
 305 config SBUSCHAR
 306         bool
 307         default y
 308
 309 config SUN_AUXIO
 310         bool
 311         default y
 312
 313 config SUN_IO
 314         bool
 315         default y
 316
 317 config SUN_LDOMS
 318         bool "Sun Logical Domains support"
 319         select HOTPLUG_CPU
 320         help
 321           Say Y here is you want to support virtual devices via
 322           Logical Domains.
 323
 324 config PCI
 325         bool "PCI support"
 326         select ARCH_SUPPORTS_MSI
 327         help
 328           Find out whether you have a PCI motherboard. PCI is the name of a
 329           bus system, i.e. the way the CPU talks to the other stuff inside
 330           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 331           VESA. If you have PCI, say Y, otherwise N.
 332
 333           The PCI-HOWTO, available from
 334           <http://www.tldp.org/docs.html#howto>, contains valuable
 335           information about which PCI hardware does work under Linux and which
 336           doesn't.
 337
 338 config PCI_DOMAINS
 339         def_bool PCI
 340
 341 config PCI_SYSCALL
 342         def_bool PCI
 343
 344 source "drivers/pci/Kconfig"
 345
 346 config SUN_OPENPROMFS
 347         tristate "Openprom tree appears in /proc/openprom"
 348         help
 349           If you say Y, the OpenPROM device tree will be available as a
 350           virtual file system, which you can mount to /proc/openprom by "mount
 351           -t openpromfs none /proc/openprom".
 352
 353           To compile the /proc/openprom support as a module, choose M here: the
 354           module will be called openpromfs.  If unsure, choose M.
 355
 356 config SPARC32_COMPAT
 357         bool "Kernel support for Linux/Sparc 32bit binary compatibility"
 358         help
 359           This allows you to run 32-bit binaries on your Ultra.
 360           Everybody wants this; say Y.
 361
 362 config COMPAT
 363         bool
 364         depends on SPARC32_COMPAT
 365         default y
 366
 367 config BINFMT_ELF32
 368         bool "Kernel support for 32-bit ELF binaries"
 369         depends on SPARC32_COMPAT
 370         help
 371           This allows you to run 32-bit Linux/ELF binaries on your Ultra.
 372           Everybody wants this; say Y.
 373
 374 config BINFMT_AOUT32
 375         bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
 376         depends on SPARC32_COMPAT
 377         help
 378           This allows you to run 32-bit a.out format binaries on your Ultra.
 379           If you want to run SunOS binaries (see SunOS binary emulation below)
 380           or other a.out binaries, say Y. If unsure, say N.
 381
 382 menu "Executable file formats"
 383
 384 source "fs/Kconfig.binfmt"
 385
 386 config SUNOS_EMUL
 387         bool "SunOS binary emulation"
 388         depends on BINFMT_AOUT32
 389         help
 390           This allows you to run most SunOS binaries.  If you want to do this,
 391           say Y here and place appropriate files in /usr/gnemul/sunos. See
 392           <http://www.ultralinux.org/faq.html> for more information.  If you
 393           want to run SunOS binaries on an Ultra you must also say Y to
 394           "Kernel support for 32-bit a.out binaries" above.
 395
 396 config SOLARIS_EMUL
 397         tristate "Solaris binary emulation (EXPERIMENTAL)"
 398         depends on SPARC32_COMPAT && EXPERIMENTAL
 399         help
 400           This is experimental code which will enable you to run (many)
 401           Solaris binaries on your SPARC Linux machine.
 402
 403           To compile this code as a module, choose M here: the
 404           module will be called solaris.
 405
 406 endmenu
 407
 408 config SCHED_SMT
 409         bool "SMT (Hyperthreading) scheduler support"
 410         depends on SMP
 411         default y
 412         help
 413           SMT scheduler support improves the CPU scheduler's decision making
 414           when dealing with UltraSPARC cpus at a cost of slightly increased
 415           overhead in some places. If unsure say N here.
 416
 417 config SCHED_MC
 418         bool "Multi-core scheduler support"
 419         depends on SMP
 420         default y
 421         help
 422           Multi-core scheduler support improves the CPU scheduler's decision
 423           making when dealing with multi-core CPU chips at a cost of slightly
 424           increased overhead in some places. If unsure say N here.
 425
 426 source "kernel/Kconfig.preempt"
 427
 428 config CMDLINE_BOOL
 429         bool "Default bootloader kernel arguments"
 430
 431 config CMDLINE
 432         string "Initial kernel command string"
 433         depends on CMDLINE_BOOL
 434         default "console=ttyS0,9600 root=/dev/sda1"
 435         help
 436           Say Y here if you want to be able to pass default arguments to
 437           the kernel. This will be overridden by the bootloader, if you
 438           use one (such as SILO). This is most useful if you want to boot
 439           a kernel from TFTP, and want default options to be available
 440           with having them passed on the command line.
 441
 442           NOTE: This option WILL override the PROM bootargs setting!
 443
 444 source "net/Kconfig"
 445
 446 source "drivers/Kconfig"
 447
 448 source "drivers/sbus/char/Kconfig"
 449
 450 source "drivers/fc4/Kconfig"
 451
 452 source "fs/Kconfig"
 453
 454 menu "Instrumentation Support"
 455         depends on EXPERIMENTAL
 456
 457 source "arch/sparc64/oprofile/Kconfig"
 458
 459 config KPROBES
 460         bool "Kprobes (EXPERIMENTAL)"
 461         depends on KALLSYMS && EXPERIMENTAL && MODULES
 462         help
 463           Kprobes allows you to trap at almost any kernel address and
 464           execute a callback function.  register_kprobe() establishes
 465           a probepoint and specifies the callback.  Kprobes is useful
 466           for kernel debugging, non-intrusive instrumentation and testing.
 467           If in doubt, say "N".
 468 endmenu
 469
 470 source "arch/sparc64/Kconfig.debug"
 471
 472 source "security/Kconfig"
 473
 474 source "crypto/Kconfig"
 475
 476 source "lib/Kconfig"