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 ARCH_NO_VIRT_TO_BUS
  70         def_bool y
  71
  72 config OF
  73         def_bool y
  74
  75 choice
  76         prompt "Kernel page size"
  77         default SPARC64_PAGE_SIZE_8KB
  78
  79 config SPARC64_PAGE_SIZE_8KB
  80         bool "8KB"
  81         help
  82           This lets you select the page size of the kernel.
  83
  84           8KB and 64KB work quite well, since Sparc ELF sections
  85           provide for up to 64KB alignment.
  86
  87           Therefore, 512KB and 4MB are for expert hackers only.
  88
  89           If you don't know what to do, choose 8KB.
  90
  91 config SPARC64_PAGE_SIZE_64KB
  92         bool "64KB"
  93
  94 config SPARC64_PAGE_SIZE_512KB
  95         bool "512KB"
  96
  97 config SPARC64_PAGE_SIZE_4MB
  98         bool "4MB"
  99
 100 endchoice
 101
 102 config SECCOMP
 103         bool "Enable seccomp to safely compute untrusted bytecode"
 104         depends on PROC_FS
 105         default y
 106         help
 107           This kernel feature is useful for number crunching applications
 108           that may need to compute untrusted bytecode during their
 109           execution. By using pipes or other transports made available to
 110           the process as file descriptors supporting the read/write
 111           syscalls, it's possible to isolate those applications in
 112           their own address space using seccomp. Once seccomp is
 113           enabled via /proc/<pid>/seccomp, it cannot be disabled
 114           and the task is only allowed to execute a few safe syscalls
 115           defined by each seccomp mode.
 116
 117           If unsure, say Y. Only embedded should say N here.
 118
 119 source kernel/Kconfig.hz
 120
 121 config HOTPLUG_CPU
 122         bool "Support for hot-pluggable CPUs"
 123         depends on SMP
 124         select HOTPLUG
 125         ---help---
 126           Say Y here to experiment with turning CPUs off and on.  CPUs
 127           can be controlled through /sys/devices/system/cpu/cpu#.
 128           Say N if you want to disable CPU hotplug.
 129
 130 source "init/Kconfig"
 131
 132 config SYSVIPC_COMPAT
 133         bool
 134         depends on COMPAT && SYSVIPC
 135         default y
 136
 137 config GENERIC_HARDIRQS
 138         bool
 139         default y
 140
 141 menu "General machine setup"
 142
 143 source "kernel/time/Kconfig"
 144
 145 config SMP
 146         bool "Symmetric multi-processing support"
 147         ---help---
 148           This enables support for systems with more than one CPU. If you have
 149           a system with only one CPU, say N. If you have a system with more than
 150           one CPU, say Y.
 151
 152           If you say N here, the kernel will run on single and multiprocessor
 153           machines, but will use only one CPU of a multiprocessor machine. If
 154           you say Y here, the kernel will run on many, but not all,
 155           singleprocessor machines. On a singleprocessor machine, the kernel
 156           will run faster if you say N here.
 157
 158           People using multiprocessor machines who say Y here should also say
 159           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 160           Management" code will be disabled if you say Y here.
 161
 162           See also the <file:Documentation/smp.txt>,
 163           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
 164           <http://www.tldp.org/docs.html#howto>.
 165
 166           If you don't know what to do here, say N.
 167
 168 config NR_CPUS
 169         int "Maximum number of CPUs (2-1024)"
 170         range 2 1024
 171         depends on SMP
 172         default "64"
 173
 174 source "drivers/cpufreq/Kconfig"
 175
 176 config US3_FREQ
 177         tristate "UltraSPARC-III CPU Frequency driver"
 178         depends on CPU_FREQ
 179         select CPU_FREQ_TABLE
 180         help
 181           This adds the CPUFreq driver for UltraSPARC-III processors.
 182
 183           For details, take a look at <file:Documentation/cpu-freq>.
 184
 185           If in doubt, say N.
 186
 187 config US2E_FREQ
 188         tristate "UltraSPARC-IIe CPU Frequency driver"
 189         depends on CPU_FREQ
 190         select CPU_FREQ_TABLE
 191         help
 192           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 193
 194           For details, take a look at <file:Documentation/cpu-freq>.
 195
 196           If in doubt, say N.
 197
 198 # Global things across all Sun machines.
 199 config RWSEM_GENERIC_SPINLOCK
 200         bool
 201
 202 config RWSEM_XCHGADD_ALGORITHM
 203         bool
 204         default y
 205
 206 config GENERIC_FIND_NEXT_BIT
 207         bool
 208         default y
 209
 210 config GENERIC_HWEIGHT
 211         bool
 212         default y if !ULTRA_HAS_POPULATION_COUNT
 213
 214 config GENERIC_CALIBRATE_DELAY
 215         bool
 216         default y
 217
 218 choice
 219         prompt "SPARC64 Huge TLB Page Size"
 220         depends on HUGETLB_PAGE
 221         default HUGETLB_PAGE_SIZE_4MB
 222
 223 config HUGETLB_PAGE_SIZE_4MB
 224         bool "4MB"
 225
 226 config HUGETLB_PAGE_SIZE_512K
 227         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
 228         bool "512K"
 229
 230 config HUGETLB_PAGE_SIZE_64K
 231         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
 232         bool "64K"
 233
 234 endchoice
 235
 236 endmenu
 237
 238 config ARCH_SELECT_MEMORY_MODEL
 239         def_bool y
 240
 241 config ARCH_SPARSEMEM_ENABLE
 242         def_bool y
 243
 244 config ARCH_SPARSEMEM_DEFAULT
 245         def_bool y
 246         select SPARSEMEM_STATIC
 247
 248 source "mm/Kconfig"
 249
 250 config ISA
 251         bool
 252         help
 253           Find out whether you have ISA slots on your motherboard.  ISA is the
 254           name of a bus system, i.e. the way the CPU talks to the other stuff
 255           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 256           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 257           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 258
 259 config ISAPNP
 260         bool
 261         help
 262           Say Y here if you would like support for ISA Plug and Play devices.
 263           Some information is in <file:Documentation/isapnp.txt>.
 264
 265           To compile this driver as a module, choose M here: the
 266           module will be called isapnp.
 267
 268           If unsure, say Y.
 269
 270 config EISA
 271         bool
 272         ---help---
 273           The Extended Industry Standard Architecture (EISA) bus was
 274           developed as an open alternative to the IBM MicroChannel bus.
 275
 276           The EISA bus provided some of the features of the IBM MicroChannel
 277           bus while maintaining backward compatibility with cards made for
 278           the older ISA bus.  The EISA bus saw limited use between 1988 and
 279           1995 when it was made obsolete by the PCI bus.
 280
 281           Say Y here if you are building a kernel for an EISA-based machine.
 282
 283           Otherwise, say N.
 284
 285 config MCA
 286         bool
 287         help
 288           MicroChannel Architecture is found in some IBM PS/2 machines and
 289           laptops.  It is a bus system similar to PCI or ISA. See
 290           <file:Documentation/mca.txt> (and especially the web page given
 291           there) before attempting to build an MCA bus kernel.
 292
 293 config PCMCIA
 294         tristate
 295         ---help---
 296           Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
 297           computer.  These are credit-card size devices such as network cards,
 298           modems or hard drives often used with laptops computers.  There are
 299           actually two varieties of these cards: the older 16 bit PCMCIA cards
 300           and the newer 32 bit CardBus cards.  If you want to use CardBus
 301           cards, you need to say Y here and also to "CardBus support" below.
 302
 303           To use your PC-cards, you will need supporting software from David
 304           Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
 305           for location).  Please also read the PCMCIA-HOWTO, available from
 306           <http://www.tldp.org/docs.html#howto>.
 307
 308           To compile this driver as modules, choose M here: the
 309           modules will be called pcmcia_core and ds.
 310
 311 config SBUS
 312         bool
 313         default y
 314
 315 config SBUSCHAR
 316         bool
 317         default y
 318
 319 config SUN_AUXIO
 320         bool
 321         default y
 322
 323 config SUN_IO
 324         bool
 325         default y
 326
 327 config SUN_LDOMS
 328         bool "Sun Logical Domains support"
 329         help
 330           Say Y here is you want to support virtual devices via
 331           Logical Domains.
 332
 333 config PCI
 334         bool "PCI support"
 335         select ARCH_SUPPORTS_MSI
 336         help
 337           Find out whether you have a PCI motherboard. PCI is the name of a
 338           bus system, i.e. the way the CPU talks to the other stuff inside
 339           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 340           VESA. If you have PCI, say Y, otherwise N.
 341
 342           The PCI-HOWTO, available from
 343           <http://www.tldp.org/docs.html#howto>, contains valuable
 344           information about which PCI hardware does work under Linux and which
 345           doesn't.
 346
 347 config PCI_DOMAINS
 348         def_bool PCI
 349
 350 config PCI_SYSCALL
 351         def_bool PCI
 352
 353 source "drivers/pci/Kconfig"
 354
 355 config SUN_OPENPROMFS
 356         tristate "Openprom tree appears in /proc/openprom"
 357         help
 358           If you say Y, the OpenPROM device tree will be available as a
 359           virtual file system, which you can mount to /proc/openprom by "mount
 360           -t openpromfs none /proc/openprom".
 361
 362           To compile the /proc/openprom support as a module, choose M here: the
 363           module will be called openpromfs.  If unsure, choose M.
 364
 365 config SPARC32_COMPAT
 366         bool "Kernel support for Linux/Sparc 32bit binary compatibility"
 367         help
 368           This allows you to run 32-bit binaries on your Ultra.
 369           Everybody wants this; say Y.
 370
 371 config COMPAT
 372         bool
 373         depends on SPARC32_COMPAT
 374         default y
 375
 376 config BINFMT_ELF32
 377         bool "Kernel support for 32-bit ELF binaries"
 378         depends on SPARC32_COMPAT
 379         help
 380           This allows you to run 32-bit Linux/ELF binaries on your Ultra.
 381           Everybody wants this; say Y.
 382
 383 config BINFMT_AOUT32
 384         bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
 385         depends on SPARC32_COMPAT
 386         help
 387           This allows you to run 32-bit a.out format binaries on your Ultra.
 388           If you want to run SunOS binaries (see SunOS binary emulation below)
 389           or other a.out binaries, say Y. If unsure, say N.
 390
 391 menu "Executable file formats"
 392
 393 source "fs/Kconfig.binfmt"
 394
 395 config SUNOS_EMUL
 396         bool "SunOS binary emulation"
 397         depends on BINFMT_AOUT32
 398         help
 399           This allows you to run most SunOS binaries.  If you want to do this,
 400           say Y here and place appropriate files in /usr/gnemul/sunos. See
 401           <http://www.ultralinux.org/faq.html> for more information.  If you
 402           want to run SunOS binaries on an Ultra you must also say Y to
 403           "Kernel support for 32-bit a.out binaries" above.
 404
 405 config SOLARIS_EMUL
 406         tristate "Solaris binary emulation (EXPERIMENTAL)"
 407         depends on SPARC32_COMPAT && EXPERIMENTAL
 408         help
 409           This is experimental code which will enable you to run (many)
 410           Solaris binaries on your SPARC Linux machine.
 411
 412           To compile this code as a module, choose M here: the
 413           module will be called solaris.
 414
 415 endmenu
 416
 417 config SCHED_SMT
 418         bool "SMT (Hyperthreading) scheduler support"
 419         depends on SMP
 420         default y
 421         help
 422           SMT scheduler support improves the CPU scheduler's decision making
 423           when dealing with UltraSPARC cpus at a cost of slightly increased
 424           overhead in some places. If unsure say N here.
 425
 426 config SCHED_MC
 427         bool "Multi-core scheduler support"
 428         depends on SMP
 429         default y
 430         help
 431           Multi-core scheduler support improves the CPU scheduler's decision
 432           making when dealing with multi-core CPU chips at a cost of slightly
 433           increased overhead in some places. If unsure say N here.
 434
 435 source "kernel/Kconfig.preempt"
 436
 437 config CMDLINE_BOOL
 438         bool "Default bootloader kernel arguments"
 439
 440 config CMDLINE
 441         string "Initial kernel command string"
 442         depends on CMDLINE_BOOL
 443         default "console=ttyS0,9600 root=/dev/sda1"
 444         help
 445           Say Y here if you want to be able to pass default arguments to
 446           the kernel. This will be overridden by the bootloader, if you
 447           use one (such as SILO). This is most useful if you want to boot
 448           a kernel from TFTP, and want default options to be available
 449           with having them passed on the command line.
 450
 451           NOTE: This option WILL override the PROM bootargs setting!
 452
 453 source "net/Kconfig"
 454
 455 source "drivers/Kconfig"
 456
 457 source "drivers/sbus/char/Kconfig"
 458
 459 source "drivers/fc4/Kconfig"
 460
 461 source "fs/Kconfig"
 462
 463 menu "Instrumentation Support"
 464         depends on EXPERIMENTAL
 465
 466 source "arch/sparc64/oprofile/Kconfig"
 467
 468 config KPROBES
 469         bool "Kprobes (EXPERIMENTAL)"
 470         depends on KALLSYMS && EXPERIMENTAL && MODULES
 471         help
 472           Kprobes allows you to trap at almost any kernel address and
 473           execute a callback function.  register_kprobe() establishes
 474           a probepoint and specifies the callback.  Kprobes is useful
 475           for kernel debugging, non-intrusive instrumentation and testing.
 476           If in doubt, say "N".
 477 endmenu
 478
 479 source "arch/sparc64/Kconfig.debug"
 480
 481 source "security/Kconfig"
 482
 483 source "crypto/Kconfig"
 484
 485 source "lib/Kconfig"