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