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         help
 320           Say Y here is you want to support virtual devices via
 321           Logical Domains.
 322
 323 config PCI
 324         bool "PCI support"
 325         select ARCH_SUPPORTS_MSI
 326         help
 327           Find out whether you have a PCI motherboard. PCI is the name of a
 328           bus system, i.e. the way the CPU talks to the other stuff inside
 329           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 330           VESA. If you have PCI, say Y, otherwise N.
 331
 332           The PCI-HOWTO, available from
 333           <http://www.tldp.org/docs.html#howto>, contains valuable
 334           information about which PCI hardware does work under Linux and which
 335           doesn't.
 336
 337 config PCI_DOMAINS
 338         def_bool PCI
 339
 340 config PCI_SYSCALL
 341         def_bool PCI
 342
 343 source "drivers/pci/Kconfig"
 344
 345 config SUN_OPENPROMFS
 346         tristate "Openprom tree appears in /proc/openprom"
 347         help
 348           If you say Y, the OpenPROM device tree will be available as a
 349           virtual file system, which you can mount to /proc/openprom by "mount
 350           -t openpromfs none /proc/openprom".
 351
 352           To compile the /proc/openprom support as a module, choose M here: the
 353           module will be called openpromfs.  If unsure, choose M.
 354
 355 config SPARC32_COMPAT
 356         bool "Kernel support for Linux/Sparc 32bit binary compatibility"
 357         help
 358           This allows you to run 32-bit binaries on your Ultra.
 359           Everybody wants this; say Y.
 360
 361 config COMPAT
 362         bool
 363         depends on SPARC32_COMPAT
 364         default y
 365
 366 config BINFMT_ELF32
 367         bool "Kernel support for 32-bit ELF binaries"
 368         depends on SPARC32_COMPAT
 369         help
 370           This allows you to run 32-bit Linux/ELF binaries on your Ultra.
 371           Everybody wants this; say Y.
 372
 373 config BINFMT_AOUT32
 374         bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
 375         depends on SPARC32_COMPAT
 376         help
 377           This allows you to run 32-bit a.out format binaries on your Ultra.
 378           If you want to run SunOS binaries (see SunOS binary emulation below)
 379           or other a.out binaries, say Y. If unsure, say N.
 380
 381 menu "Executable file formats"
 382
 383 source "fs/Kconfig.binfmt"
 384
 385 config SUNOS_EMUL
 386         bool "SunOS binary emulation"
 387         depends on BINFMT_AOUT32
 388         help
 389           This allows you to run most SunOS binaries.  If you want to do this,
 390           say Y here and place appropriate files in /usr/gnemul/sunos. See
 391           <http://www.ultralinux.org/faq.html> for more information.  If you
 392           want to run SunOS binaries on an Ultra you must also say Y to
 393           "Kernel support for 32-bit a.out binaries" above.
 394
 395 config SOLARIS_EMUL
 396         tristate "Solaris binary emulation (EXPERIMENTAL)"
 397         depends on SPARC32_COMPAT && EXPERIMENTAL
 398         help
 399           This is experimental code which will enable you to run (many)
 400           Solaris binaries on your SPARC Linux machine.
 401
 402           To compile this code as a module, choose M here: the
 403           module will be called solaris.
 404
 405 endmenu
 406
 407 config SCHED_SMT
 408         bool "SMT (Hyperthreading) scheduler support"
 409         depends on SMP
 410         default y
 411         help
 412           SMT scheduler support improves the CPU scheduler's decision making
 413           when dealing with UltraSPARC cpus at a cost of slightly increased
 414           overhead in some places. If unsure say N here.
 415
 416 config SCHED_MC
 417         bool "Multi-core scheduler support"
 418         depends on SMP
 419         default y
 420         help
 421           Multi-core scheduler support improves the CPU scheduler's decision
 422           making when dealing with multi-core CPU chips at a cost of slightly
 423           increased overhead in some places. If unsure say N here.
 424
 425 source "kernel/Kconfig.preempt"
 426
 427 config CMDLINE_BOOL
 428         bool "Default bootloader kernel arguments"
 429
 430 config CMDLINE
 431         string "Initial kernel command string"
 432         depends on CMDLINE_BOOL
 433         default "console=ttyS0,9600 root=/dev/sda1"
 434         help
 435           Say Y here if you want to be able to pass default arguments to
 436           the kernel. This will be overridden by the bootloader, if you
 437           use one (such as SILO). This is most useful if you want to boot
 438           a kernel from TFTP, and want default options to be available
 439           with having them passed on the command line.
 440
 441           NOTE: This option WILL override the PROM bootargs setting!
 442
 443 source "net/Kconfig"
 444
 445 source "drivers/Kconfig"
 446
 447 source "drivers/sbus/char/Kconfig"
 448
 449 source "drivers/fc4/Kconfig"
 450
 451 source "fs/Kconfig"
 452
 453 menu "Instrumentation Support"
 454         depends on EXPERIMENTAL
 455
 456 source "arch/sparc64/oprofile/Kconfig"
 457
 458 config KPROBES
 459         bool "Kprobes (EXPERIMENTAL)"
 460         depends on KALLSYMS && EXPERIMENTAL && MODULES
 461         help
 462           Kprobes allows you to trap at almost any kernel address and
 463           execute a callback function.  register_kprobe() establishes
 464           a probepoint and specifies the callback.  Kprobes is useful
 465           for kernel debugging, non-intrusive instrumentation and testing.
 466           If in doubt, say "N".
 467 endmenu
 468
 469 source "arch/sparc64/Kconfig.debug"
 470
 471 source "security/Kconfig"
 472
 473 source "crypto/Kconfig"
 474
 475 source "lib/Kconfig"