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