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_CLOCKEVENTS
  27         bool
  28         default y
  29
  30 config 64BIT
  31         def_bool y
  32
  33 config MMU
  34         bool
  35         default y
  36
  37 config QUICKLIST
  38         bool
  39         default y
  40
  41 config STACKTRACE_SUPPORT
  42         bool
  43         default y
  44
  45 config LOCKDEP_SUPPORT
  46         bool
  47         default y
  48
  49 config ARCH_MAY_HAVE_PC_FDC
  50         bool
  51         default y
  52
  53 config ARCH_HAS_ILOG2_U32
  54         bool
  55         default n
  56
  57 config ARCH_HAS_ILOG2_U64
  58         bool
  59         default n
  60
  61 config AUDIT_ARCH
  62         bool
  63         default y
  64
  65 choice
  66         prompt "Kernel page size"
  67         default SPARC64_PAGE_SIZE_8KB
  68
  69 config SPARC64_PAGE_SIZE_8KB
  70         bool "8KB"
  71         help
  72           This lets you select the page size of the kernel.
  73
  74           8KB and 64KB work quite well, since Sparc ELF sections
  75           provide for up to 64KB alignment.
  76
  77           Therefore, 512KB and 4MB are for expert hackers only.
  78
  79           If you don't know what to do, choose 8KB.
  80
  81 config SPARC64_PAGE_SIZE_64KB
  82         bool "64KB"
  83
  84 config SPARC64_PAGE_SIZE_512KB
  85         bool "512KB"
  86
  87 config SPARC64_PAGE_SIZE_4MB
  88         bool "4MB"
  89
  90 endchoice
  91
  92 config SECCOMP
  93         bool "Enable seccomp to safely compute untrusted bytecode"
  94         depends on PROC_FS
  95         default y
  96         help
  97           This kernel feature is useful for number crunching applications
  98           that may need to compute untrusted bytecode during their
  99           execution. By using pipes or other transports made available to
 100           the process as file descriptors supporting the read/write
 101           syscalls, it's possible to isolate those applications in
 102           their own address space using seccomp. Once seccomp is
 103           enabled via /proc/<pid>/seccomp, it cannot be disabled
 104           and the task is only allowed to execute a few safe syscalls
 105           defined by each seccomp mode.
 106
 107           If unsure, say Y. Only embedded should say N here.
 108
 109 source kernel/Kconfig.hz
 110
 111 source "init/Kconfig"
 112
 113 config SYSVIPC_COMPAT
 114         bool
 115         depends on COMPAT && SYSVIPC
 116         default y
 117
 118 config GENERIC_HARDIRQS
 119         bool
 120         default y
 121
 122 menu "General machine setup"
 123
 124 source "kernel/time/Kconfig"
 125
 126 config SMP
 127         bool "Symmetric multi-processing support"
 128         ---help---
 129           This enables support for systems with more than one CPU. If you have
 130           a system with only one CPU, say N. If you have a system with more than
 131           one CPU, say Y.
 132
 133           If you say N here, the kernel will run on single and multiprocessor
 134           machines, but will use only one CPU of a multiprocessor machine. If
 135           you say Y here, the kernel will run on many, but not all,
 136           singleprocessor machines. On a singleprocessor machine, the kernel
 137           will run faster if you say N here.
 138
 139           People using multiprocessor machines who say Y here should also say
 140           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 141           Management" code will be disabled if you say Y here.
 142
 143           See also the <file:Documentation/smp.txt>,
 144           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
 145           <http://www.tldp.org/docs.html#howto>.
 146
 147           If you don't know what to do here, say N.
 148
 149 config NR_CPUS
 150         int "Maximum number of CPUs (2-1024)"
 151         range 2 1024
 152         depends on SMP
 153         default "64"
 154
 155 source "drivers/cpufreq/Kconfig"
 156
 157 config US3_FREQ
 158         tristate "UltraSPARC-III CPU Frequency driver"
 159         depends on CPU_FREQ
 160         select CPU_FREQ_TABLE
 161         help
 162           This adds the CPUFreq driver for UltraSPARC-III processors.
 163
 164           For details, take a look at <file:Documentation/cpu-freq>.
 165
 166           If in doubt, say N.
 167
 168 config US2E_FREQ
 169         tristate "UltraSPARC-IIe CPU Frequency driver"
 170         depends on CPU_FREQ
 171         select CPU_FREQ_TABLE
 172         help
 173           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 174
 175           For details, take a look at <file:Documentation/cpu-freq>.
 176
 177           If in doubt, say N.
 178
 179 # Global things across all Sun machines.
 180 config RWSEM_GENERIC_SPINLOCK
 181         bool
 182
 183 config RWSEM_XCHGADD_ALGORITHM
 184         bool
 185         default y
 186
 187 config GENERIC_FIND_NEXT_BIT
 188         bool
 189         default y
 190
 191 config GENERIC_HWEIGHT
 192         bool
 193         default y if !ULTRA_HAS_POPULATION_COUNT
 194
 195 config GENERIC_CALIBRATE_DELAY
 196         bool
 197         default y
 198
 199 choice
 200         prompt "SPARC64 Huge TLB Page Size"
 201         depends on HUGETLB_PAGE
 202         default HUGETLB_PAGE_SIZE_4MB
 203
 204 config HUGETLB_PAGE_SIZE_4MB
 205         bool "4MB"
 206
 207 config HUGETLB_PAGE_SIZE_512K
 208         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
 209         bool "512K"
 210
 211 config HUGETLB_PAGE_SIZE_64K
 212         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
 213         bool "64K"
 214
 215 endchoice
 216
 217 endmenu
 218
 219 config ARCH_SELECT_MEMORY_MODEL
 220         def_bool y
 221
 222 config ARCH_SPARSEMEM_ENABLE
 223         def_bool y
 224
 225 config ARCH_SPARSEMEM_DEFAULT
 226         def_bool y
 227         select SPARSEMEM_STATIC
 228
 229 source "mm/Kconfig"
 230
 231 config ISA
 232         bool
 233         help
 234           Find out whether you have ISA slots on your motherboard.  ISA is the
 235           name of a bus system, i.e. the way the CPU talks to the other stuff
 236           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 237           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 238           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 239
 240 config ISAPNP
 241         bool
 242         help
 243           Say Y here if you would like support for ISA Plug and Play devices.
 244           Some information is in <file:Documentation/isapnp.txt>.
 245
 246           To compile this driver as a module, choose M here: the
 247           module will be called isapnp.
 248
 249           If unsure, say Y.
 250
 251 config EISA
 252         bool
 253         ---help---
 254           The Extended Industry Standard Architecture (EISA) bus was
 255           developed as an open alternative to the IBM MicroChannel bus.
 256
 257           The EISA bus provided some of the features of the IBM MicroChannel
 258           bus while maintaining backward compatibility with cards made for
 259           the older ISA bus.  The EISA bus saw limited use between 1988 and
 260           1995 when it was made obsolete by the PCI bus.
 261
 262           Say Y here if you are building a kernel for an EISA-based machine.
 263
 264           Otherwise, say N.
 265
 266 config MCA
 267         bool
 268         help
 269           MicroChannel Architecture is found in some IBM PS/2 machines and
 270           laptops.  It is a bus system similar to PCI or ISA. See
 271           <file:Documentation/mca.txt> (and especially the web page given
 272           there) before attempting to build an MCA bus kernel.
 273
 274 config PCMCIA
 275         tristate
 276         ---help---
 277           Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
 278           computer.  These are credit-card size devices such as network cards,
 279           modems or hard drives often used with laptops computers.  There are
 280           actually two varieties of these cards: the older 16 bit PCMCIA cards
 281           and the newer 32 bit CardBus cards.  If you want to use CardBus
 282           cards, you need to say Y here and also to "CardBus support" below.
 283
 284           To use your PC-cards, you will need supporting software from David
 285           Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
 286           for location).  Please also read the PCMCIA-HOWTO, available from
 287           <http://www.tldp.org/docs.html#howto>.
 288
 289           To compile this driver as modules, choose M here: the
 290           modules will be called pcmcia_core and ds.
 291
 292 config SBUS
 293         bool
 294         default y
 295
 296 config SBUSCHAR
 297         bool
 298         default y
 299
 300 config SUN_AUXIO
 301         bool
 302         default y
 303
 304 config SUN_IO
 305         bool
 306         default y
 307
 308 config SUN_LDOMS
 309         bool "Sun Logical Domains support"
 310         help
 311           Say Y here is you want to support virtual devices via
 312           Logical Domains.
 313
 314 config PCI
 315         bool "PCI support"
 316         select ARCH_SUPPORTS_MSI
 317         help
 318           Find out whether you have a PCI motherboard. PCI is the name of a
 319           bus system, i.e. the way the CPU talks to the other stuff inside
 320           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 321           VESA. If you have PCI, say Y, otherwise N.
 322
 323           The PCI-HOWTO, available from
 324           <http://www.tldp.org/docs.html#howto>, contains valuable
 325           information about which PCI hardware does work under Linux and which
 326           doesn't.
 327
 328 config PCI_DOMAINS
 329         def_bool PCI
 330
 331 config PCI_SYSCALL
 332         def_bool PCI
 333
 334 source "drivers/pci/Kconfig"
 335
 336 config SUN_OPENPROMFS
 337         tristate "Openprom tree appears in /proc/openprom"
 338         help
 339           If you say Y, the OpenPROM device tree will be available as a
 340           virtual file system, which you can mount to /proc/openprom by "mount
 341           -t openpromfs none /proc/openprom".
 342
 343           To compile the /proc/openprom support as a module, choose M here: the
 344           module will be called openpromfs.  If unsure, choose M.
 345
 346 config SPARC32_COMPAT
 347         bool "Kernel support for Linux/Sparc 32bit binary compatibility"
 348         help
 349           This allows you to run 32-bit binaries on your Ultra.
 350           Everybody wants this; say Y.
 351
 352 config COMPAT
 353         bool
 354         depends on SPARC32_COMPAT
 355         default y
 356
 357 config BINFMT_ELF32
 358         bool "Kernel support for 32-bit ELF binaries"
 359         depends on SPARC32_COMPAT
 360         help
 361           This allows you to run 32-bit Linux/ELF binaries on your Ultra.
 362           Everybody wants this; say Y.
 363
 364 config BINFMT_AOUT32
 365         bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
 366         depends on SPARC32_COMPAT
 367         help
 368           This allows you to run 32-bit a.out format binaries on your Ultra.
 369           If you want to run SunOS binaries (see SunOS binary emulation below)
 370           or other a.out binaries, say Y. If unsure, say N.
 371
 372 menu "Executable file formats"
 373
 374 source "fs/Kconfig.binfmt"
 375
 376 config SUNOS_EMUL
 377         bool "SunOS binary emulation"
 378         depends on BINFMT_AOUT32
 379         help
 380           This allows you to run most SunOS binaries.  If you want to do this,
 381           say Y here and place appropriate files in /usr/gnemul/sunos. See
 382           <http://www.ultralinux.org/faq.html> for more information.  If you
 383           want to run SunOS binaries on an Ultra you must also say Y to
 384           "Kernel support for 32-bit a.out binaries" above.
 385
 386 config SOLARIS_EMUL
 387         tristate "Solaris binary emulation (EXPERIMENTAL)"
 388         depends on SPARC32_COMPAT && EXPERIMENTAL
 389         help
 390           This is experimental code which will enable you to run (many)
 391           Solaris binaries on your SPARC Linux machine.
 392
 393           To compile this code as a module, choose M here: the
 394           module will be called solaris.
 395
 396 endmenu
 397
 398 config SCHED_SMT
 399         bool "SMT (Hyperthreading) scheduler support"
 400         depends on SMP
 401         default y
 402         help
 403           SMT scheduler support improves the CPU scheduler's decision making
 404           when dealing with UltraSPARC cpus at a cost of slightly increased
 405           overhead in some places. If unsure say N here.
 406
 407 config SCHED_MC
 408         bool "Multi-core scheduler support"
 409         depends on SMP
 410         default y
 411         help
 412           Multi-core scheduler support improves the CPU scheduler's decision
 413           making when dealing with multi-core CPU chips at a cost of slightly
 414           increased overhead in some places. If unsure say N here.
 415
 416 source "kernel/Kconfig.preempt"
 417
 418 config CMDLINE_BOOL
 419         bool "Default bootloader kernel arguments"
 420
 421 config CMDLINE
 422         string "Initial kernel command string"
 423         depends on CMDLINE_BOOL
 424         default "console=ttyS0,9600 root=/dev/sda1"
 425         help
 426           Say Y here if you want to be able to pass default arguments to
 427           the kernel. This will be overridden by the bootloader, if you
 428           use one (such as SILO). This is most useful if you want to boot
 429           a kernel from TFTP, and want default options to be available
 430           with having them passed on the command line.
 431
 432           NOTE: This option WILL override the PROM bootargs setting!
 433
 434 source "net/Kconfig"
 435
 436 source "drivers/Kconfig"
 437
 438 source "drivers/sbus/char/Kconfig"
 439
 440 source "drivers/fc4/Kconfig"
 441
 442 source "fs/Kconfig"
 443
 444 menu "Instrumentation Support"
 445         depends on EXPERIMENTAL
 446
 447 source "arch/sparc64/oprofile/Kconfig"
 448
 449 config KPROBES
 450         bool "Kprobes (EXPERIMENTAL)"
 451         depends on KALLSYMS && EXPERIMENTAL && MODULES
 452         help
 453           Kprobes allows you to trap at almost any kernel address and
 454           execute a callback function.  register_kprobe() establishes
 455           a probepoint and specifies the callback.  Kprobes is useful
 456           for kernel debugging, non-intrusive instrumentation and testing.
 457           If in doubt, say "N".
 458 endmenu
 459
 460 source "arch/sparc64/Kconfig.debug"
 461
 462 source "security/Kconfig"
 463
 464 source "crypto/Kconfig"
 465
 466 source "lib/Kconfig"