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