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 the <file:Documentation/smp.txt>,
 172           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
 173           <http://www.tldp.org/docs.html#howto>.
 174
 175           If you don't know what to do here, say N.
 176
 177 config NR_CPUS
 178         int "Maximum number of CPUs (2-1024)"
 179         range 2 1024
 180         depends on SMP
 181         default "64"
 182
 183 source "drivers/cpufreq/Kconfig"
 184
 185 config US3_FREQ
 186         tristate "UltraSPARC-III CPU Frequency driver"
 187         depends on CPU_FREQ
 188         select CPU_FREQ_TABLE
 189         help
 190           This adds the CPUFreq driver for UltraSPARC-III processors.
 191
 192           For details, take a look at <file:Documentation/cpu-freq>.
 193
 194           If in doubt, say N.
 195
 196 config US2E_FREQ
 197         tristate "UltraSPARC-IIe CPU Frequency driver"
 198         depends on CPU_FREQ
 199         select CPU_FREQ_TABLE
 200         help
 201           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 202
 203           For details, take a look at <file:Documentation/cpu-freq>.
 204
 205           If in doubt, say N.
 206
 207 # Global things across all Sun machines.
 208 config GENERIC_LOCKBREAK
 209         bool
 210         default y
 211         depends on SMP && PREEMPT
 212
 213 config RWSEM_GENERIC_SPINLOCK
 214         bool
 215
 216 config RWSEM_XCHGADD_ALGORITHM
 217         bool
 218         default y
 219
 220 config GENERIC_FIND_NEXT_BIT
 221         bool
 222         default y
 223
 224 config GENERIC_HWEIGHT
 225         bool
 226         default y if !ULTRA_HAS_POPULATION_COUNT
 227
 228 config GENERIC_CALIBRATE_DELAY
 229         bool
 230         default y
 231
 232 choice
 233         prompt "SPARC64 Huge TLB Page Size"
 234         depends on HUGETLB_PAGE
 235         default HUGETLB_PAGE_SIZE_4MB
 236
 237 config HUGETLB_PAGE_SIZE_4MB
 238         bool "4MB"
 239
 240 config HUGETLB_PAGE_SIZE_512K
 241         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
 242         bool "512K"
 243
 244 config HUGETLB_PAGE_SIZE_64K
 245         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
 246         bool "64K"
 247
 248 endchoice
 249
 250 endmenu
 251
 252 config ARCH_SELECT_MEMORY_MODEL
 253         def_bool y
 254
 255 config ARCH_SPARSEMEM_ENABLE
 256         def_bool y
 257         select SPARSEMEM_VMEMMAP_ENABLE
 258
 259 config ARCH_SPARSEMEM_DEFAULT
 260         def_bool y
 261
 262 source "mm/Kconfig"
 263
 264 config ISA
 265         bool
 266         help
 267           Find out whether you have ISA slots on your motherboard.  ISA is the
 268           name of a bus system, i.e. the way the CPU talks to the other stuff
 269           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 270           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 271           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 272
 273 config ISAPNP
 274         bool
 275         help
 276           Say Y here if you would like support for ISA Plug and Play devices.
 277           Some information is in <file:Documentation/isapnp.txt>.
 278
 279           To compile this driver as a module, choose M here: the
 280           module will be called isapnp.
 281
 282           If unsure, say Y.
 283
 284 config EISA
 285         bool
 286         ---help---
 287           The Extended Industry Standard Architecture (EISA) bus was
 288           developed as an open alternative to the IBM MicroChannel bus.
 289
 290           The EISA bus provided some of the features of the IBM MicroChannel
 291           bus while maintaining backward compatibility with cards made for
 292           the older ISA bus.  The EISA bus saw limited use between 1988 and
 293           1995 when it was made obsolete by the PCI bus.
 294
 295           Say Y here if you are building a kernel for an EISA-based machine.
 296
 297           Otherwise, say N.
 298
 299 config MCA
 300         bool
 301         help
 302           MicroChannel Architecture is found in some IBM PS/2 machines and
 303           laptops.  It is a bus system similar to PCI or ISA. See
 304           <file:Documentation/mca.txt> (and especially the web page given
 305           there) before attempting to build an MCA bus kernel.
 306
 307 config PCMCIA
 308         tristate
 309         ---help---
 310           Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
 311           computer.  These are credit-card size devices such as network cards,
 312           modems or hard drives often used with laptops computers.  There are
 313           actually two varieties of these cards: the older 16 bit PCMCIA cards
 314           and the newer 32 bit CardBus cards.  If you want to use CardBus
 315           cards, you need to say Y here and also to "CardBus support" below.
 316
 317           To use your PC-cards, you will need supporting software from David
 318           Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
 319           for location).  Please also read the PCMCIA-HOWTO, available from
 320           <http://www.tldp.org/docs.html#howto>.
 321
 322           To compile this driver as modules, choose M here: the
 323           modules will be called pcmcia_core and ds.
 324
 325 config SBUS
 326         bool
 327         default y
 328
 329 config SBUSCHAR
 330         bool
 331         default y
 332
 333 config SUN_AUXIO
 334         bool
 335         default y
 336
 337 config SUN_IO
 338         bool
 339         default y
 340
 341 config SUN_LDOMS
 342         bool "Sun Logical Domains support"
 343         help
 344           Say Y here is you want to support virtual devices via
 345           Logical Domains.
 346
 347 config PCI
 348         bool "PCI support"
 349         select ARCH_SUPPORTS_MSI
 350         help
 351           Find out whether you have a PCI motherboard. PCI is the name of a
 352           bus system, i.e. the way the CPU talks to the other stuff inside
 353           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 354           VESA. If you have PCI, say Y, otherwise N.
 355
 356 config PCI_DOMAINS
 357         def_bool PCI
 358
 359 config PCI_SYSCALL
 360         def_bool PCI
 361
 362 source "drivers/pci/Kconfig"
 363
 364 config SUN_OPENPROMFS
 365         tristate "Openprom tree appears in /proc/openprom"
 366         help
 367           If you say Y, the OpenPROM device tree will be available as a
 368           virtual file system, which you can mount to /proc/openprom by "mount
 369           -t openpromfs none /proc/openprom".
 370
 371           To compile the /proc/openprom support as a module, choose M here: the
 372           module will be called openpromfs.  If unsure, choose M.
 373
 374 config SPARC32_COMPAT
 375         bool "Kernel support for Linux/Sparc 32bit binary compatibility"
 376         help
 377           This allows you to run 32-bit binaries on your Ultra.
 378           Everybody wants this; say Y.
 379
 380 config COMPAT
 381         bool
 382         depends on SPARC32_COMPAT
 383         default y
 384
 385 config BINFMT_ELF32
 386         bool "Kernel support for 32-bit ELF binaries"
 387         depends on SPARC32_COMPAT
 388         help
 389           This allows you to run 32-bit Linux/ELF binaries on your Ultra.
 390           Everybody wants this; say Y.
 391
 392 config BINFMT_AOUT32
 393         bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
 394         depends on SPARC32_COMPAT
 395         help
 396           This allows you to run 32-bit a.out format binaries on your Ultra.
 397           If you want to run SunOS binaries (see SunOS binary emulation below)
 398           or other a.out binaries, say Y. If unsure, say N.
 399
 400 menu "Executable file formats"
 401
 402 source "fs/Kconfig.binfmt"
 403
 404 config SUNOS_EMUL
 405         bool "SunOS binary emulation"
 406         depends on BINFMT_AOUT32
 407         help
 408           This allows you to run most SunOS binaries.  If you want to do this,
 409           say Y here and place appropriate files in /usr/gnemul/sunos. See
 410           <http://www.ultralinux.org/faq.html> for more information.  If you
 411           want to run SunOS binaries on an Ultra you must also say Y to
 412           "Kernel support for 32-bit a.out binaries" above.
 413
 414 config SOLARIS_EMUL
 415         tristate "Solaris binary emulation (EXPERIMENTAL)"
 416         depends on SPARC32_COMPAT && NET && EXPERIMENTAL
 417         help
 418           This is experimental code which will enable you to run (many)
 419           Solaris binaries on your SPARC Linux machine.
 420
 421           To compile this code as a module, choose M here: the
 422           module will be called solaris.
 423
 424 endmenu
 425
 426 config SCHED_SMT
 427         bool "SMT (Hyperthreading) scheduler support"
 428         depends on SMP
 429         default y
 430         help
 431           SMT scheduler support improves the CPU scheduler's decision making
 432           when dealing with UltraSPARC cpus at a cost of slightly increased
 433           overhead in some places. If unsure say N here.
 434
 435 config SCHED_MC
 436         bool "Multi-core scheduler support"
 437         depends on SMP
 438         default y
 439         help
 440           Multi-core scheduler support improves the CPU scheduler's decision
 441           making when dealing with multi-core CPU chips at a cost of slightly
 442           increased overhead in some places. If unsure say N here.
 443
 444 source "kernel/Kconfig.preempt"
 445
 446 config CMDLINE_BOOL
 447         bool "Default bootloader kernel arguments"
 448
 449 config CMDLINE
 450         string "Initial kernel command string"
 451         depends on CMDLINE_BOOL
 452         default "console=ttyS0,9600 root=/dev/sda1"
 453         help
 454           Say Y here if you want to be able to pass default arguments to
 455           the kernel. This will be overridden by the bootloader, if you
 456           use one (such as SILO). This is most useful if you want to boot
 457           a kernel from TFTP, and want default options to be available
 458           with having them passed on the command line.
 459
 460           NOTE: This option WILL override the PROM bootargs setting!
 461
 462 source "net/Kconfig"
 463
 464 source "drivers/Kconfig"
 465
 466 source "drivers/sbus/char/Kconfig"
 467
 468 source "fs/Kconfig"
 469
 470 source "arch/sparc64/Kconfig.debug"
 471
 472 source "security/Kconfig"
 473
 474 source "crypto/Kconfig"
 475
 476 source "lib/Kconfig"