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         select HAVE_KRETPROBES
  14
  15 config SPARC64
  16         bool
  17         default y
  18         select HAVE_IDE
  19         select HAVE_LMB
  20         help
  21           SPARC is a family of RISC microprocessors designed and marketed by
  22           Sun Microsystems, incorporated.  This port covers the newer 64-bit
  23           UltraSPARC.  The UltraLinux project maintains both the SPARC32 and
  24           SPARC64 ports; its web page is available at
  25           <http://www.ultralinux.org/>.
  26
  27 config GENERIC_TIME
  28         bool
  29         default y
  30
  31 config GENERIC_CMOS_UPDATE
  32         bool
  33         default y
  34
  35 config GENERIC_CLOCKEVENTS
  36         bool
  37         default y
  38
  39 config 64BIT
  40         def_bool y
  41
  42 config MMU
  43         bool
  44         default y
  45
  46 config IOMMU_HELPER
  47         bool
  48         default y
  49
  50 config QUICKLIST
  51         bool
  52         default y
  53
  54 config STACKTRACE_SUPPORT
  55         bool
  56         default y
  57
  58 config LOCKDEP_SUPPORT
  59         bool
  60         default y
  61
  62 config ARCH_MAY_HAVE_PC_FDC
  63         bool
  64         default y
  65
  66 config ARCH_HAS_ILOG2_U32
  67         bool
  68         default n
  69
  70 config ARCH_HAS_ILOG2_U64
  71         bool
  72         default n
  73
  74 config AUDIT_ARCH
  75         bool
  76         default y
  77
  78 config HAVE_SETUP_PER_CPU_AREA
  79         def_bool y
  80
  81 config ARCH_NO_VIRT_TO_BUS
  82         def_bool y
  83
  84 config OF
  85         def_bool y
  86
  87 config GENERIC_HARDIRQS_NO__DO_IRQ
  88         bool
  89         def_bool y
  90
  91 config ARCH_SUPPORTS_AOUT
  92         def_bool y
  93
  94 choice
  95         prompt "Kernel page size"
  96         default SPARC64_PAGE_SIZE_8KB
  97
  98 config SPARC64_PAGE_SIZE_8KB
  99         bool "8KB"
 100         help
 101           This lets you select the page size of the kernel.
 102
 103           8KB and 64KB work quite well, since Sparc ELF sections
 104           provide for up to 64KB alignment.
 105
 106           Therefore, 512KB and 4MB are for expert hackers only.
 107
 108           If you don't know what to do, choose 8KB.
 109
 110 config SPARC64_PAGE_SIZE_64KB
 111         bool "64KB"
 112
 113 config SPARC64_PAGE_SIZE_512KB
 114         bool "512KB"
 115
 116 config SPARC64_PAGE_SIZE_4MB
 117         bool "4MB"
 118
 119 endchoice
 120
 121 config SECCOMP
 122         bool "Enable seccomp to safely compute untrusted bytecode"
 123         depends on PROC_FS
 124         default y
 125         help
 126           This kernel feature is useful for number crunching applications
 127           that may need to compute untrusted bytecode during their
 128           execution. By using pipes or other transports made available to
 129           the process as file descriptors supporting the read/write
 130           syscalls, it's possible to isolate those applications in
 131           their own address space using seccomp. Once seccomp is
 132           enabled via /proc/<pid>/seccomp, it cannot be disabled
 133           and the task is only allowed to execute a few safe syscalls
 134           defined by each seccomp mode.
 135
 136           If unsure, say Y. Only embedded should say N here.
 137
 138 source kernel/Kconfig.hz
 139
 140 config HOTPLUG_CPU
 141         bool "Support for hot-pluggable CPUs"
 142         depends on SMP
 143         select HOTPLUG
 144         ---help---
 145           Say Y here to experiment with turning CPUs off and on.  CPUs
 146           can be controlled through /sys/devices/system/cpu/cpu#.
 147           Say N if you want to disable CPU hotplug.
 148
 149 source "init/Kconfig"
 150
 151 config SYSVIPC_COMPAT
 152         bool
 153         depends on COMPAT && SYSVIPC
 154         default y
 155
 156 config GENERIC_HARDIRQS
 157         bool
 158         default y
 159
 160 menu "General machine setup"
 161
 162 source "kernel/time/Kconfig"
 163
 164 config SMP
 165         bool "Symmetric multi-processing support"
 166         ---help---
 167           This enables support for systems with more than one CPU. If you have
 168           a system with only one CPU, say N. If you have a system with more than
 169           one CPU, say Y.
 170
 171           If you say N here, the kernel will run on single and multiprocessor
 172           machines, but will use only one CPU of a multiprocessor machine. If
 173           you say Y here, the kernel will run on many, but not all,
 174           singleprocessor machines. On a singleprocessor machine, the kernel
 175           will run faster if you say N here.
 176
 177           People using multiprocessor machines who say Y here should also say
 178           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 179           Management" code will be disabled if you say Y here.
 180
 181           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 182           available at <http://www.tldp.org/docs.html#howto>.
 183
 184           If you don't know what to do here, say N.
 185
 186 config NR_CPUS
 187         int "Maximum number of CPUs (2-1024)"
 188         range 2 1024
 189         depends on SMP
 190         default "64"
 191
 192 source "drivers/cpufreq/Kconfig"
 193
 194 config US3_FREQ
 195         tristate "UltraSPARC-III CPU Frequency driver"
 196         depends on CPU_FREQ
 197         select CPU_FREQ_TABLE
 198         help
 199           This adds the CPUFreq driver for UltraSPARC-III processors.
 200
 201           For details, take a look at <file:Documentation/cpu-freq>.
 202
 203           If in doubt, say N.
 204
 205 config US2E_FREQ
 206         tristate "UltraSPARC-IIe CPU Frequency driver"
 207         depends on CPU_FREQ
 208         select CPU_FREQ_TABLE
 209         help
 210           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 211
 212           For details, take a look at <file:Documentation/cpu-freq>.
 213
 214           If in doubt, say N.
 215
 216 # Global things across all Sun machines.
 217 config GENERIC_LOCKBREAK
 218         bool
 219         default y
 220         depends on SMP && PREEMPT
 221
 222 config RWSEM_GENERIC_SPINLOCK
 223         bool
 224
 225 config RWSEM_XCHGADD_ALGORITHM
 226         bool
 227         default y
 228
 229 config GENERIC_FIND_NEXT_BIT
 230         bool
 231         default y
 232
 233 config GENERIC_HWEIGHT
 234         bool
 235         default y if !ULTRA_HAS_POPULATION_COUNT
 236
 237 config GENERIC_CALIBRATE_DELAY
 238         bool
 239         default y
 240
 241 choice
 242         prompt "SPARC64 Huge TLB Page Size"
 243         depends on HUGETLB_PAGE
 244         default HUGETLB_PAGE_SIZE_4MB
 245
 246 config HUGETLB_PAGE_SIZE_4MB
 247         bool "4MB"
 248
 249 config HUGETLB_PAGE_SIZE_512K
 250         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
 251         bool "512K"
 252
 253 config HUGETLB_PAGE_SIZE_64K
 254         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
 255         bool "64K"
 256
 257 endchoice
 258
 259 endmenu
 260
 261 config ARCH_SELECT_MEMORY_MODEL
 262         def_bool y
 263
 264 config ARCH_SPARSEMEM_ENABLE
 265         def_bool y
 266         select SPARSEMEM_VMEMMAP_ENABLE
 267
 268 config ARCH_SPARSEMEM_DEFAULT
 269         def_bool y
 270
 271 source "mm/Kconfig"
 272
 273 config ISA
 274         bool
 275         help
 276           Find out whether you have ISA slots on your motherboard.  ISA is the
 277           name of a bus system, i.e. the way the CPU talks to the other stuff
 278           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 279           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 280           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 281
 282 config ISAPNP
 283         bool
 284         help
 285           Say Y here if you would like support for ISA Plug and Play devices.
 286           Some information is in <file:Documentation/isapnp.txt>.
 287
 288           To compile this driver as a module, choose M here: the
 289           module will be called isapnp.
 290
 291           If unsure, say Y.
 292
 293 config EISA
 294         bool
 295         ---help---
 296           The Extended Industry Standard Architecture (EISA) bus was
 297           developed as an open alternative to the IBM MicroChannel bus.
 298
 299           The EISA bus provided some of the features of the IBM MicroChannel
 300           bus while maintaining backward compatibility with cards made for
 301           the older ISA bus.  The EISA bus saw limited use between 1988 and
 302           1995 when it was made obsolete by the PCI bus.
 303
 304           Say Y here if you are building a kernel for an EISA-based machine.
 305
 306           Otherwise, say N.
 307
 308 config MCA
 309         bool
 310         help
 311           MicroChannel Architecture is found in some IBM PS/2 machines and
 312           laptops.  It is a bus system similar to PCI or ISA. See
 313           <file:Documentation/mca.txt> (and especially the web page given
 314           there) before attempting to build an MCA bus kernel.
 315
 316 config PCMCIA
 317         tristate
 318         ---help---
 319           Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
 320           computer.  These are credit-card size devices such as network cards,
 321           modems or hard drives often used with laptops computers.  There are
 322           actually two varieties of these cards: the older 16 bit PCMCIA cards
 323           and the newer 32 bit CardBus cards.  If you want to use CardBus
 324           cards, you need to say Y here and also to "CardBus support" below.
 325
 326           To use your PC-cards, you will need supporting software from David
 327           Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
 328           for location).  Please also read the PCMCIA-HOWTO, available from
 329           <http://www.tldp.org/docs.html#howto>.
 330
 331           To compile this driver as modules, choose M here: the
 332           modules will be called pcmcia_core and ds.
 333
 334 config SBUS
 335         bool
 336         default y
 337
 338 config SBUSCHAR
 339         bool
 340         default y
 341
 342 config SUN_AUXIO
 343         bool
 344         default y
 345
 346 config SUN_IO
 347         bool
 348         default y
 349
 350 config SUN_LDOMS
 351         bool "Sun Logical Domains support"
 352         help
 353           Say Y here is you want to support virtual devices via
 354           Logical Domains.
 355
 356 config PCI
 357         bool "PCI support"
 358         select ARCH_SUPPORTS_MSI
 359         help
 360           Find out whether you have a PCI motherboard. PCI is the name of a
 361           bus system, i.e. the way the CPU talks to the other stuff inside
 362           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 363           VESA. If you have PCI, say Y, otherwise N.
 364
 365 config PCI_DOMAINS
 366         def_bool PCI
 367
 368 config PCI_SYSCALL
 369         def_bool PCI
 370
 371 source "drivers/pci/Kconfig"
 372
 373 config SUN_OPENPROMFS
 374         tristate "Openprom tree appears in /proc/openprom"
 375         help
 376           If you say Y, the OpenPROM device tree will be available as a
 377           virtual file system, which you can mount to /proc/openprom by "mount
 378           -t openpromfs none /proc/openprom".
 379
 380           To compile the /proc/openprom support as a module, choose M here: the
 381           module will be called openpromfs.  If unsure, choose M.
 382
 383 config SPARC32_COMPAT
 384         bool "Kernel support for Linux/Sparc 32bit binary compatibility"
 385         help
 386           This allows you to run 32-bit binaries on your Ultra.
 387           Everybody wants this; say Y.
 388
 389 config COMPAT
 390         bool
 391         depends on SPARC32_COMPAT
 392         default y
 393         select COMPAT_BINFMT_ELF
 394
 395 config BINFMT_AOUT32
 396         bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
 397         depends on SPARC32_COMPAT && ARCH_SUPPORTS_AOUT
 398         help
 399           This allows you to run 32-bit a.out format binaries on your Ultra.
 400           If you want to run SunOS binaries (see SunOS binary emulation below)
 401           or other a.out binaries, say Y. If unsure, say N.
 402
 403 menu "Executable file formats"
 404
 405 source "fs/Kconfig.binfmt"
 406
 407 config SUNOS_EMUL
 408         bool "SunOS binary emulation"
 409         depends on BINFMT_AOUT32
 410         help
 411           This allows you to run most SunOS binaries.  If you want to do this,
 412           say Y here and place appropriate files in /usr/gnemul/sunos. See
 413           <http://www.ultralinux.org/faq.html> for more information.  If you
 414           want to run SunOS binaries on an Ultra you must also say Y to
 415           "Kernel support for 32-bit a.out binaries" above.
 416
 417 config SOLARIS_EMUL
 418         tristate "Solaris binary emulation (EXPERIMENTAL)"
 419         depends on SPARC32_COMPAT && NET && EXPERIMENTAL
 420         help
 421           This is experimental code which will enable you to run (many)
 422           Solaris binaries on your SPARC Linux machine.
 423
 424           To compile this code as a module, choose M here: the
 425           module will be called solaris.
 426
 427 endmenu
 428
 429 config SCHED_SMT
 430         bool "SMT (Hyperthreading) scheduler support"
 431         depends on SMP
 432         default y
 433         help
 434           SMT scheduler support improves the CPU scheduler's decision making
 435           when dealing with UltraSPARC cpus at a cost of slightly increased
 436           overhead in some places. If unsure say N here.
 437
 438 config SCHED_MC
 439         bool "Multi-core scheduler support"
 440         depends on SMP
 441         default y
 442         help
 443           Multi-core scheduler support improves the CPU scheduler's decision
 444           making when dealing with multi-core CPU chips at a cost of slightly
 445           increased overhead in some places. If unsure say N here.
 446
 447 source "kernel/Kconfig.preempt"
 448
 449 config CMDLINE_BOOL
 450         bool "Default bootloader kernel arguments"
 451
 452 config CMDLINE
 453         string "Initial kernel command string"
 454         depends on CMDLINE_BOOL
 455         default "console=ttyS0,9600 root=/dev/sda1"
 456         help
 457           Say Y here if you want to be able to pass default arguments to
 458           the kernel. This will be overridden by the bootloader, if you
 459           use one (such as SILO). This is most useful if you want to boot
 460           a kernel from TFTP, and want default options to be available
 461           with having them passed on the command line.
 462
 463           NOTE: This option WILL override the PROM bootargs setting!
 464
 465 source "net/Kconfig"
 466
 467 source "drivers/Kconfig"
 468
 469 source "drivers/sbus/char/Kconfig"
 470
 471 source "fs/Kconfig"
 472
 473 source "arch/sparc64/Kconfig.debug"
 474
 475 source "security/Kconfig"
 476
 477 source "crypto/Kconfig"
 478
 479 source "lib/Kconfig"