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 config ARCH_NO_VIRT_TO_BUS
  66         def_bool y
  67
  68 choice
  69         prompt "Kernel page size"
  70         default SPARC64_PAGE_SIZE_8KB
  71
  72 config SPARC64_PAGE_SIZE_8KB
  73         bool "8KB"
  74         help
  75           This lets you select the page size of the kernel.
  76
  77           8KB and 64KB work quite well, since Sparc ELF sections
  78           provide for up to 64KB alignment.
  79
  80           Therefore, 512KB and 4MB are for expert hackers only.
  81
  82           If you don't know what to do, choose 8KB.
  83
  84 config SPARC64_PAGE_SIZE_64KB
  85         bool "64KB"
  86
  87 config SPARC64_PAGE_SIZE_512KB
  88         bool "512KB"
  89
  90 config SPARC64_PAGE_SIZE_4MB
  91         bool "4MB"
  92
  93 endchoice
  94
  95 config SECCOMP
  96         bool "Enable seccomp to safely compute untrusted bytecode"
  97         depends on PROC_FS
  98         default y
  99         help
 100           This kernel feature is useful for number crunching applications
 101           that may need to compute untrusted bytecode during their
 102           execution. By using pipes or other transports made available to
 103           the process as file descriptors supporting the read/write
 104           syscalls, it's possible to isolate those applications in
 105           their own address space using seccomp. Once seccomp is
 106           enabled via /proc/<pid>/seccomp, it cannot be disabled
 107           and the task is only allowed to execute a few safe syscalls
 108           defined by each seccomp mode.
 109
 110           If unsure, say Y. Only embedded should say N here.
 111
 112 source kernel/Kconfig.hz
 113
 114 config HOTPLUG_CPU
 115         bool "Support for hot-pluggable CPUs"
 116         depends on SMP
 117         select HOTPLUG
 118         ---help---
 119           Say Y here to experiment with turning CPUs off and on.  CPUs
 120           can be controlled through /sys/devices/system/cpu/cpu#.
 121           Say N if you want to disable CPU hotplug.
 122
 123 source "init/Kconfig"
 124
 125 config SYSVIPC_COMPAT
 126         bool
 127         depends on COMPAT && SYSVIPC
 128         default y
 129
 130 config GENERIC_HARDIRQS
 131         bool
 132         default y
 133
 134 menu "General machine setup"
 135
 136 source "kernel/time/Kconfig"
 137
 138 config SMP
 139         bool "Symmetric multi-processing support"
 140         ---help---
 141           This enables support for systems with more than one CPU. If you have
 142           a system with only one CPU, say N. If you have a system with more than
 143           one CPU, say Y.
 144
 145           If you say N here, the kernel will run on single and multiprocessor
 146           machines, but will use only one CPU of a multiprocessor machine. If
 147           you say Y here, the kernel will run on many, but not all,
 148           singleprocessor machines. On a singleprocessor machine, the kernel
 149           will run faster if you say N here.
 150
 151           People using multiprocessor machines who say Y here should also say
 152           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 153           Management" code will be disabled if you say Y here.
 154
 155           See also the <file:Documentation/smp.txt>,
 156           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
 157           <http://www.tldp.org/docs.html#howto>.
 158
 159           If you don't know what to do here, say N.
 160
 161 config NR_CPUS
 162         int "Maximum number of CPUs (2-1024)"
 163         range 2 1024
 164         depends on SMP
 165         default "64"
 166
 167 source "drivers/cpufreq/Kconfig"
 168
 169 config US3_FREQ
 170         tristate "UltraSPARC-III CPU Frequency driver"
 171         depends on CPU_FREQ
 172         select CPU_FREQ_TABLE
 173         help
 174           This adds the CPUFreq driver for UltraSPARC-III processors.
 175
 176           For details, take a look at <file:Documentation/cpu-freq>.
 177
 178           If in doubt, say N.
 179
 180 config US2E_FREQ
 181         tristate "UltraSPARC-IIe CPU Frequency driver"
 182         depends on CPU_FREQ
 183         select CPU_FREQ_TABLE
 184         help
 185           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 186
 187           For details, take a look at <file:Documentation/cpu-freq>.
 188
 189           If in doubt, say N.
 190
 191 # Global things across all Sun machines.
 192 config RWSEM_GENERIC_SPINLOCK
 193         bool
 194
 195 config RWSEM_XCHGADD_ALGORITHM
 196         bool
 197         default y
 198
 199 config GENERIC_FIND_NEXT_BIT
 200         bool
 201         default y
 202
 203 config GENERIC_HWEIGHT
 204         bool
 205         default y if !ULTRA_HAS_POPULATION_COUNT
 206
 207 config GENERIC_CALIBRATE_DELAY
 208         bool
 209         default y
 210
 211 choice
 212         prompt "SPARC64 Huge TLB Page Size"
 213         depends on HUGETLB_PAGE
 214         default HUGETLB_PAGE_SIZE_4MB
 215
 216 config HUGETLB_PAGE_SIZE_4MB
 217         bool "4MB"
 218
 219 config HUGETLB_PAGE_SIZE_512K
 220         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
 221         bool "512K"
 222
 223 config HUGETLB_PAGE_SIZE_64K
 224         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
 225         bool "64K"
 226
 227 endchoice
 228
 229 endmenu
 230
 231 config ARCH_SELECT_MEMORY_MODEL
 232         def_bool y
 233
 234 config ARCH_SPARSEMEM_ENABLE
 235         def_bool y
 236
 237 config ARCH_SPARSEMEM_DEFAULT
 238         def_bool y
 239         select SPARSEMEM_STATIC
 240
 241 source "mm/Kconfig"
 242
 243 config ISA
 244         bool
 245         help
 246           Find out whether you have ISA slots on your motherboard.  ISA is the
 247           name of a bus system, i.e. the way the CPU talks to the other stuff
 248           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 249           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 250           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 251
 252 config ISAPNP
 253         bool
 254         help
 255           Say Y here if you would like support for ISA Plug and Play devices.
 256           Some information is in <file:Documentation/isapnp.txt>.
 257
 258           To compile this driver as a module, choose M here: the
 259           module will be called isapnp.
 260
 261           If unsure, say Y.
 262
 263 config EISA
 264         bool
 265         ---help---
 266           The Extended Industry Standard Architecture (EISA) bus was
 267           developed as an open alternative to the IBM MicroChannel bus.
 268
 269           The EISA bus provided some of the features of the IBM MicroChannel
 270           bus while maintaining backward compatibility with cards made for
 271           the older ISA bus.  The EISA bus saw limited use between 1988 and
 272           1995 when it was made obsolete by the PCI bus.
 273
 274           Say Y here if you are building a kernel for an EISA-based machine.
 275
 276           Otherwise, say N.
 277
 278 config MCA
 279         bool
 280         help
 281           MicroChannel Architecture is found in some IBM PS/2 machines and
 282           laptops.  It is a bus system similar to PCI or ISA. See
 283           <file:Documentation/mca.txt> (and especially the web page given
 284           there) before attempting to build an MCA bus kernel.
 285
 286 config PCMCIA
 287         tristate
 288         ---help---
 289           Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
 290           computer.  These are credit-card size devices such as network cards,
 291           modems or hard drives often used with laptops computers.  There are
 292           actually two varieties of these cards: the older 16 bit PCMCIA cards
 293           and the newer 32 bit CardBus cards.  If you want to use CardBus
 294           cards, you need to say Y here and also to "CardBus support" below.
 295
 296           To use your PC-cards, you will need supporting software from David
 297           Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
 298           for location).  Please also read the PCMCIA-HOWTO, available from
 299           <http://www.tldp.org/docs.html#howto>.
 300
 301           To compile this driver as modules, choose M here: the
 302           modules will be called pcmcia_core and ds.
 303
 304 config SBUS
 305         bool
 306         default y
 307
 308 config SBUSCHAR
 309         bool
 310         default y
 311
 312 config SUN_AUXIO
 313         bool
 314         default y
 315
 316 config SUN_IO
 317         bool
 318         default y
 319
 320 config SUN_LDOMS
 321         bool "Sun Logical Domains support"
 322         help
 323           Say Y here is you want to support virtual devices via
 324           Logical Domains.
 325
 326 config PCI
 327         bool "PCI support"
 328         select ARCH_SUPPORTS_MSI
 329         help
 330           Find out whether you have a PCI motherboard. PCI is the name of a
 331           bus system, i.e. the way the CPU talks to the other stuff inside
 332           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 333           VESA. If you have PCI, say Y, otherwise N.
 334
 335           The PCI-HOWTO, available from
 336           <http://www.tldp.org/docs.html#howto>, contains valuable
 337           information about which PCI hardware does work under Linux and which
 338           doesn't.
 339
 340 config PCI_DOMAINS
 341         def_bool PCI
 342
 343 config PCI_SYSCALL
 344         def_bool PCI
 345
 346 source "drivers/pci/Kconfig"
 347
 348 config SUN_OPENPROMFS
 349         tristate "Openprom tree appears in /proc/openprom"
 350         help
 351           If you say Y, the OpenPROM device tree will be available as a
 352           virtual file system, which you can mount to /proc/openprom by "mount
 353           -t openpromfs none /proc/openprom".
 354
 355           To compile the /proc/openprom support as a module, choose M here: the
 356           module will be called openpromfs.  If unsure, choose M.
 357
 358 config SPARC32_COMPAT
 359         bool "Kernel support for Linux/Sparc 32bit binary compatibility"
 360         help
 361           This allows you to run 32-bit binaries on your Ultra.
 362           Everybody wants this; say Y.
 363
 364 config COMPAT
 365         bool
 366         depends on SPARC32_COMPAT
 367         default y
 368
 369 config BINFMT_ELF32
 370         bool "Kernel support for 32-bit ELF binaries"
 371         depends on SPARC32_COMPAT
 372         help
 373           This allows you to run 32-bit Linux/ELF binaries on your Ultra.
 374           Everybody wants this; say Y.
 375
 376 config BINFMT_AOUT32
 377         bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
 378         depends on SPARC32_COMPAT
 379         help
 380           This allows you to run 32-bit a.out format binaries on your Ultra.
 381           If you want to run SunOS binaries (see SunOS binary emulation below)
 382           or other a.out binaries, say Y. If unsure, say N.
 383
 384 menu "Executable file formats"
 385
 386 source "fs/Kconfig.binfmt"
 387
 388 config SUNOS_EMUL
 389         bool "SunOS binary emulation"
 390         depends on BINFMT_AOUT32
 391         help
 392           This allows you to run most SunOS binaries.  If you want to do this,
 393           say Y here and place appropriate files in /usr/gnemul/sunos. See
 394           <http://www.ultralinux.org/faq.html> for more information.  If you
 395           want to run SunOS binaries on an Ultra you must also say Y to
 396           "Kernel support for 32-bit a.out binaries" above.
 397
 398 config SOLARIS_EMUL
 399         tristate "Solaris binary emulation (EXPERIMENTAL)"
 400         depends on SPARC32_COMPAT && EXPERIMENTAL
 401         help
 402           This is experimental code which will enable you to run (many)
 403           Solaris binaries on your SPARC Linux machine.
 404
 405           To compile this code as a module, choose M here: the
 406           module will be called solaris.
 407
 408 endmenu
 409
 410 config SCHED_SMT
 411         bool "SMT (Hyperthreading) scheduler support"
 412         depends on SMP
 413         default y
 414         help
 415           SMT scheduler support improves the CPU scheduler's decision making
 416           when dealing with UltraSPARC cpus at a cost of slightly increased
 417           overhead in some places. If unsure say N here.
 418
 419 config SCHED_MC
 420         bool "Multi-core scheduler support"
 421         depends on SMP
 422         default y
 423         help
 424           Multi-core scheduler support improves the CPU scheduler's decision
 425           making when dealing with multi-core CPU chips at a cost of slightly
 426           increased overhead in some places. If unsure say N here.
 427
 428 source "kernel/Kconfig.preempt"
 429
 430 config CMDLINE_BOOL
 431         bool "Default bootloader kernel arguments"
 432
 433 config CMDLINE
 434         string "Initial kernel command string"
 435         depends on CMDLINE_BOOL
 436         default "console=ttyS0,9600 root=/dev/sda1"
 437         help
 438           Say Y here if you want to be able to pass default arguments to
 439           the kernel. This will be overridden by the bootloader, if you
 440           use one (such as SILO). This is most useful if you want to boot
 441           a kernel from TFTP, and want default options to be available
 442           with having them passed on the command line.
 443
 444           NOTE: This option WILL override the PROM bootargs setting!
 445
 446 source "net/Kconfig"
 447
 448 source "drivers/Kconfig"
 449
 450 source "drivers/sbus/char/Kconfig"
 451
 452 source "drivers/fc4/Kconfig"
 453
 454 source "fs/Kconfig"
 455
 456 menu "Instrumentation Support"
 457         depends on EXPERIMENTAL
 458
 459 source "arch/sparc64/oprofile/Kconfig"
 460
 461 config KPROBES
 462         bool "Kprobes (EXPERIMENTAL)"
 463         depends on KALLSYMS && EXPERIMENTAL && MODULES
 464         help
 465           Kprobes allows you to trap at almost any kernel address and
 466           execute a callback function.  register_kprobe() establishes
 467           a probepoint and specifies the callback.  Kprobes is useful
 468           for kernel debugging, non-intrusive instrumentation and testing.
 469           If in doubt, say "N".
 470 endmenu
 471
 472 source "arch/sparc64/Kconfig.debug"
 473
 474 source "security/Kconfig"
 475
 476 source "crypto/Kconfig"
 477
 478 source "lib/Kconfig"