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_CMOS_UPDATE
  27         bool
  28         default y
  29
  30 config GENERIC_CLOCKEVENTS
  31         bool
  32         default y
  33
  34 config 64BIT
  35         def_bool y
  36
  37 config MMU
  38         bool
  39         default y
  40
  41 config QUICKLIST
  42         bool
  43         default y
  44
  45 config STACKTRACE_SUPPORT
  46         bool
  47         default y
  48
  49 config LOCKDEP_SUPPORT
  50         bool
  51         default y
  52
  53 config ARCH_MAY_HAVE_PC_FDC
  54         bool
  55         default y
  56
  57 config ARCH_HAS_ILOG2_U32
  58         bool
  59         default n
  60
  61 config ARCH_HAS_ILOG2_U64
  62         bool
  63         default n
  64
  65 config AUDIT_ARCH
  66         bool
  67         default y
  68
  69 config HAVE_SETUP_PER_CPU_AREA
  70         def_bool y
  71
  72 config ARCH_NO_VIRT_TO_BUS
  73         def_bool y
  74
  75 config OF
  76         def_bool y
  77
  78 config GENERIC_HARDIRQS_NO__DO_IRQ
  79         bool
  80         def_bool y
  81
  82 choice
  83         prompt "Kernel page size"
  84         default SPARC64_PAGE_SIZE_8KB
  85
  86 config SPARC64_PAGE_SIZE_8KB
  87         bool "8KB"
  88         help
  89           This lets you select the page size of the kernel.
  90
  91           8KB and 64KB work quite well, since Sparc ELF sections
  92           provide for up to 64KB alignment.
  93
  94           Therefore, 512KB and 4MB are for expert hackers only.
  95
  96           If you don't know what to do, choose 8KB.
  97
  98 config SPARC64_PAGE_SIZE_64KB
  99         bool "64KB"
 100
 101 config SPARC64_PAGE_SIZE_512KB
 102         bool "512KB"
 103
 104 config SPARC64_PAGE_SIZE_4MB
 105         bool "4MB"
 106
 107 endchoice
 108
 109 config SECCOMP
 110         bool "Enable seccomp to safely compute untrusted bytecode"
 111         depends on PROC_FS
 112         default y
 113         help
 114           This kernel feature is useful for number crunching applications
 115           that may need to compute untrusted bytecode during their
 116           execution. By using pipes or other transports made available to
 117           the process as file descriptors supporting the read/write
 118           syscalls, it's possible to isolate those applications in
 119           their own address space using seccomp. Once seccomp is
 120           enabled via /proc/<pid>/seccomp, it cannot be disabled
 121           and the task is only allowed to execute a few safe syscalls
 122           defined by each seccomp mode.
 123
 124           If unsure, say Y. Only embedded should say N here.
 125
 126 source kernel/Kconfig.hz
 127
 128 config HOTPLUG_CPU
 129         bool "Support for hot-pluggable CPUs"
 130         depends on SMP
 131         select HOTPLUG
 132         ---help---
 133           Say Y here to experiment with turning CPUs off and on.  CPUs
 134           can be controlled through /sys/devices/system/cpu/cpu#.
 135           Say N if you want to disable CPU hotplug.
 136
 137 source "init/Kconfig"
 138
 139 config SYSVIPC_COMPAT
 140         bool
 141         depends on COMPAT && SYSVIPC
 142         default y
 143
 144 config GENERIC_HARDIRQS
 145         bool
 146         default y
 147
 148 menu "General machine setup"
 149
 150 source "kernel/time/Kconfig"
 151
 152 config SMP
 153         bool "Symmetric multi-processing support"
 154         ---help---
 155           This enables support for systems with more than one CPU. If you have
 156           a system with only one CPU, say N. If you have a system with more than
 157           one CPU, say Y.
 158
 159           If you say N here, the kernel will run on single and multiprocessor
 160           machines, but will use only one CPU of a multiprocessor machine. If
 161           you say Y here, the kernel will run on many, but not all,
 162           singleprocessor machines. On a singleprocessor machine, the kernel
 163           will run faster if you say N here.
 164
 165           People using multiprocessor machines who say Y here should also say
 166           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 167           Management" code will be disabled if you say Y here.
 168
 169           See also the <file:Documentation/smp.txt>,
 170           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
 171           <http://www.tldp.org/docs.html#howto>.
 172
 173           If you don't know what to do here, say N.
 174
 175 config NR_CPUS
 176         int "Maximum number of CPUs (2-1024)"
 177         range 2 1024
 178         depends on SMP
 179         default "64"
 180
 181 source "drivers/cpufreq/Kconfig"
 182
 183 config US3_FREQ
 184         tristate "UltraSPARC-III CPU Frequency driver"
 185         depends on CPU_FREQ
 186         select CPU_FREQ_TABLE
 187         help
 188           This adds the CPUFreq driver for UltraSPARC-III processors.
 189
 190           For details, take a look at <file:Documentation/cpu-freq>.
 191
 192           If in doubt, say N.
 193
 194 config US2E_FREQ
 195         tristate "UltraSPARC-IIe CPU Frequency driver"
 196         depends on CPU_FREQ
 197         select CPU_FREQ_TABLE
 198         help
 199           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 200
 201           For details, take a look at <file:Documentation/cpu-freq>.
 202
 203           If in doubt, say N.
 204
 205 # Global things across all Sun machines.
 206 config GENERIC_LOCKBREAK
 207         bool
 208         default y
 209         depends on SMP && PREEMPT
 210
 211 config RWSEM_GENERIC_SPINLOCK
 212         bool
 213
 214 config RWSEM_XCHGADD_ALGORITHM
 215         bool
 216         default y
 217
 218 config GENERIC_FIND_NEXT_BIT
 219         bool
 220         default y
 221
 222 config GENERIC_HWEIGHT
 223         bool
 224         default y if !ULTRA_HAS_POPULATION_COUNT
 225
 226 config GENERIC_CALIBRATE_DELAY
 227         bool
 228         default y
 229
 230 choice
 231         prompt "SPARC64 Huge TLB Page Size"
 232         depends on HUGETLB_PAGE
 233         default HUGETLB_PAGE_SIZE_4MB
 234
 235 config HUGETLB_PAGE_SIZE_4MB
 236         bool "4MB"
 237
 238 config HUGETLB_PAGE_SIZE_512K
 239         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
 240         bool "512K"
 241
 242 config HUGETLB_PAGE_SIZE_64K
 243         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
 244         bool "64K"
 245
 246 endchoice
 247
 248 endmenu
 249
 250 config ARCH_SELECT_MEMORY_MODEL
 251         def_bool y
 252
 253 config ARCH_SPARSEMEM_ENABLE
 254         def_bool y
 255         select SPARSEMEM_VMEMMAP_ENABLE
 256
 257 config ARCH_SPARSEMEM_DEFAULT
 258         def_bool y
 259
 260 source "mm/Kconfig"
 261
 262 config ISA
 263         bool
 264         help
 265           Find out whether you have ISA slots on your motherboard.  ISA is the
 266           name of a bus system, i.e. the way the CPU talks to the other stuff
 267           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 268           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 269           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 270
 271 config ISAPNP
 272         bool
 273         help
 274           Say Y here if you would like support for ISA Plug and Play devices.
 275           Some information is in <file:Documentation/isapnp.txt>.
 276
 277           To compile this driver as a module, choose M here: the
 278           module will be called isapnp.
 279
 280           If unsure, say Y.
 281
 282 config EISA
 283         bool
 284         ---help---
 285           The Extended Industry Standard Architecture (EISA) bus was
 286           developed as an open alternative to the IBM MicroChannel bus.
 287
 288           The EISA bus provided some of the features of the IBM MicroChannel
 289           bus while maintaining backward compatibility with cards made for
 290           the older ISA bus.  The EISA bus saw limited use between 1988 and
 291           1995 when it was made obsolete by the PCI bus.
 292
 293           Say Y here if you are building a kernel for an EISA-based machine.
 294
 295           Otherwise, say N.
 296
 297 config MCA
 298         bool
 299         help
 300           MicroChannel Architecture is found in some IBM PS/2 machines and
 301           laptops.  It is a bus system similar to PCI or ISA. See
 302           <file:Documentation/mca.txt> (and especially the web page given
 303           there) before attempting to build an MCA bus kernel.
 304
 305 config PCMCIA
 306         tristate
 307         ---help---
 308           Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
 309           computer.  These are credit-card size devices such as network cards,
 310           modems or hard drives often used with laptops computers.  There are
 311           actually two varieties of these cards: the older 16 bit PCMCIA cards
 312           and the newer 32 bit CardBus cards.  If you want to use CardBus
 313           cards, you need to say Y here and also to "CardBus support" below.
 314
 315           To use your PC-cards, you will need supporting software from David
 316           Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
 317           for location).  Please also read the PCMCIA-HOWTO, available from
 318           <http://www.tldp.org/docs.html#howto>.
 319
 320           To compile this driver as modules, choose M here: the
 321           modules will be called pcmcia_core and ds.
 322
 323 config SBUS
 324         bool
 325         default y
 326
 327 config SBUSCHAR
 328         bool
 329         default y
 330
 331 config SUN_AUXIO
 332         bool
 333         default y
 334
 335 config SUN_IO
 336         bool
 337         default y
 338
 339 config SUN_LDOMS
 340         bool "Sun Logical Domains support"
 341         help
 342           Say Y here is you want to support virtual devices via
 343           Logical Domains.
 344
 345 config PCI
 346         bool "PCI support"
 347         select ARCH_SUPPORTS_MSI
 348         help
 349           Find out whether you have a PCI motherboard. PCI is the name of a
 350           bus system, i.e. the way the CPU talks to the other stuff inside
 351           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 352           VESA. If you have PCI, say Y, otherwise N.
 353
 354           The PCI-HOWTO, available from
 355           <http://www.tldp.org/docs.html#howto>, contains valuable
 356           information about which PCI hardware does work under Linux and which
 357           doesn't.
 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
 388 config BINFMT_ELF32
 389         bool "Kernel support for 32-bit ELF binaries"
 390         depends on SPARC32_COMPAT
 391         help
 392           This allows you to run 32-bit Linux/ELF binaries on your Ultra.
 393           Everybody wants this; say Y.
 394
 395 config BINFMT_AOUT32
 396         bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
 397         depends on SPARC32_COMPAT
 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 "kernel/Kconfig.instrumentation"
 474
 475 source "arch/sparc64/Kconfig.debug"
 476
 477 source "security/Kconfig"
 478
 479 source "crypto/Kconfig"
 480
 481 source "lib/Kconfig"