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 64BIT
  23         def_bool y
  24
  25 config MMU
  26         bool
  27         default y
  28
  29 config TIME_INTERPOLATION
  30         bool
  31         default y
  32
  33 config ARCH_MAY_HAVE_PC_FDC
  34         bool
  35         default y
  36
  37 config ARCH_HAS_ILOG2_U32
  38         bool
  39         default n
  40
  41 config ARCH_HAS_ILOG2_U64
  42         bool
  43         default n
  44
  45 config AUDIT_ARCH
  46         bool
  47         default y
  48
  49 choice
  50         prompt "Kernel page size"
  51         default SPARC64_PAGE_SIZE_8KB
  52
  53 config SPARC64_PAGE_SIZE_8KB
  54         bool "8KB"
  55         help
  56           This lets you select the page size of the kernel.
  57
  58           8KB and 64KB work quite well, since Sparc ELF sections
  59           provide for up to 64KB alignment.
  60
  61           Therefore, 512KB and 4MB are for expert hackers only.
  62
  63           If you don't know what to do, choose 8KB.
  64
  65 config SPARC64_PAGE_SIZE_64KB
  66         bool "64KB"
  67
  68 config SPARC64_PAGE_SIZE_512KB
  69         bool "512KB"
  70
  71 config SPARC64_PAGE_SIZE_4MB
  72         bool "4MB"
  73
  74 endchoice
  75
  76 config SECCOMP
  77         bool "Enable seccomp to safely compute untrusted bytecode"
  78         depends on PROC_FS
  79         default y
  80         help
  81           This kernel feature is useful for number crunching applications
  82           that may need to compute untrusted bytecode during their
  83           execution. By using pipes or other transports made available to
  84           the process as file descriptors supporting the read/write
  85           syscalls, it's possible to isolate those applications in
  86           their own address space using seccomp. Once seccomp is
  87           enabled via /proc/<pid>/seccomp, it cannot be disabled
  88           and the task is only allowed to execute a few safe syscalls
  89           defined by each seccomp mode.
  90
  91           If unsure, say Y. Only embedded should say N here.
  92
  93 source kernel/Kconfig.hz
  94
  95 source "init/Kconfig"
  96
  97 config SYSVIPC_COMPAT
  98         bool
  99         depends on COMPAT && SYSVIPC
 100         default y
 101
 102 config GENERIC_HARDIRQS
 103         bool
 104         default y
 105
 106 menu "General machine setup"
 107
 108 config SMP
 109         bool "Symmetric multi-processing support"
 110         ---help---
 111           This enables support for systems with more than one CPU. If you have
 112           a system with only one CPU, say N. If you have a system with more than
 113           one CPU, say Y.
 114
 115           If you say N here, the kernel will run on single and multiprocessor
 116           machines, but will use only one CPU of a multiprocessor machine. If
 117           you say Y here, the kernel will run on many, but not all,
 118           singleprocessor machines. On a singleprocessor machine, the kernel
 119           will run faster if you say N here.
 120
 121           People using multiprocessor machines who say Y here should also say
 122           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 123           Management" code will be disabled if you say Y here.
 124
 125           See also the <file:Documentation/smp.txt>,
 126           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
 127           <http://www.tldp.org/docs.html#howto>.
 128
 129           If you don't know what to do here, say N.
 130
 131 config PREEMPT
 132         bool "Preemptible Kernel"
 133         help
 134           This option reduces the latency of the kernel when reacting to
 135           real-time or interactive events by allowing a low priority process to
 136           be preempted even if it is in kernel mode executing a system call.
 137           This allows applications to run more reliably even when the system is
 138           under load.
 139
 140           Say Y here if you are building a kernel for a desktop, embedded
 141           or real-time system.  Say N if you are unsure.
 142
 143 config NR_CPUS
 144         int "Maximum number of CPUs (2-64)"
 145         range 2 64
 146         depends on SMP
 147         default "32"
 148
 149 source "drivers/cpufreq/Kconfig"
 150
 151 config US3_FREQ
 152         tristate "UltraSPARC-III CPU Frequency driver"
 153         depends on CPU_FREQ
 154         select CPU_FREQ_TABLE
 155         help
 156           This adds the CPUFreq driver for UltraSPARC-III processors.
 157
 158           For details, take a look at <file:Documentation/cpu-freq>.
 159
 160           If in doubt, say N.
 161
 162 config US2E_FREQ
 163         tristate "UltraSPARC-IIe CPU Frequency driver"
 164         depends on CPU_FREQ
 165         select CPU_FREQ_TABLE
 166         help
 167           This adds the CPUFreq driver for UltraSPARC-IIe processors.
 168
 169           For details, take a look at <file:Documentation/cpu-freq>.
 170
 171           If in doubt, say N.
 172
 173 # Global things across all Sun machines.
 174 config RWSEM_GENERIC_SPINLOCK
 175         bool
 176
 177 config RWSEM_XCHGADD_ALGORITHM
 178         bool
 179         default y
 180
 181 config GENERIC_FIND_NEXT_BIT
 182         bool
 183         default y
 184
 185 config GENERIC_HWEIGHT
 186         bool
 187         default y if !ULTRA_HAS_POPULATION_COUNT
 188
 189 config GENERIC_CALIBRATE_DELAY
 190         bool
 191         default y
 192
 193 choice
 194         prompt "SPARC64 Huge TLB Page Size"
 195         depends on HUGETLB_PAGE
 196         default HUGETLB_PAGE_SIZE_4MB
 197
 198 config HUGETLB_PAGE_SIZE_4MB
 199         bool "4MB"
 200
 201 config HUGETLB_PAGE_SIZE_512K
 202         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
 203         bool "512K"
 204
 205 config HUGETLB_PAGE_SIZE_64K
 206         depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
 207         bool "64K"
 208
 209 endchoice
 210
 211 endmenu
 212
 213 config ARCH_SELECT_MEMORY_MODEL
 214         def_bool y
 215
 216 config ARCH_SPARSEMEM_ENABLE
 217         def_bool y
 218
 219 config ARCH_SPARSEMEM_DEFAULT
 220         def_bool y
 221
 222 config LARGE_ALLOCS
 223         def_bool y
 224
 225 source "mm/Kconfig"
 226
 227 config GENERIC_ISA_DMA
 228         bool
 229         default y
 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 PCI
 309         bool "PCI support"
 310         help
 311           Find out whether you have a PCI motherboard. PCI is the name of a
 312           bus system, i.e. the way the CPU talks to the other stuff inside
 313           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 314           VESA. If you have PCI, say Y, otherwise N.
 315
 316           The PCI-HOWTO, available from
 317           <http://www.tldp.org/docs.html#howto>, contains valuable
 318           information about which PCI hardware does work under Linux and which
 319           doesn't.
 320
 321 config PCI_DOMAINS
 322         bool
 323         default PCI
 324
 325 source "drivers/pci/Kconfig"
 326
 327 config SUN_OPENPROMFS
 328         tristate "Openprom tree appears in /proc/openprom"
 329         help
 330           If you say Y, the OpenPROM device tree will be available as a
 331           virtual file system, which you can mount to /proc/openprom by "mount
 332           -t openpromfs none /proc/openprom".
 333
 334           To compile the /proc/openprom support as a module, choose M here: the
 335           module will be called openpromfs.  If unsure, choose M.
 336
 337 config SPARC32_COMPAT
 338         bool "Kernel support for Linux/Sparc 32bit binary compatibility"
 339         help
 340           This allows you to run 32-bit binaries on your Ultra.
 341           Everybody wants this; say Y.
 342
 343 config COMPAT
 344         bool
 345         depends on SPARC32_COMPAT
 346         default y
 347
 348 config BINFMT_ELF32
 349         bool "Kernel support for 32-bit ELF binaries"
 350         depends on SPARC32_COMPAT
 351         help
 352           This allows you to run 32-bit Linux/ELF binaries on your Ultra.
 353           Everybody wants this; say Y.
 354
 355 config BINFMT_AOUT32
 356         bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
 357         depends on SPARC32_COMPAT
 358         help
 359           This allows you to run 32-bit a.out format binaries on your Ultra.
 360           If you want to run SunOS binaries (see SunOS binary emulation below)
 361           or other a.out binaries, say Y. If unsure, say N.
 362
 363 menu "Executable file formats"
 364
 365 source "fs/Kconfig.binfmt"
 366
 367 config SUNOS_EMUL
 368         bool "SunOS binary emulation"
 369         depends on BINFMT_AOUT32
 370         help
 371           This allows you to run most SunOS binaries.  If you want to do this,
 372           say Y here and place appropriate files in /usr/gnemul/sunos. See
 373           <http://www.ultralinux.org/faq.html> for more information.  If you
 374           want to run SunOS binaries on an Ultra you must also say Y to
 375           "Kernel support for 32-bit a.out binaries" above.
 376
 377 config SOLARIS_EMUL
 378         tristate "Solaris binary emulation (EXPERIMENTAL)"
 379         depends on SPARC32_COMPAT && EXPERIMENTAL
 380         help
 381           This is experimental code which will enable you to run (many)
 382           Solaris binaries on your SPARC Linux machine.
 383
 384           To compile this code as a module, choose M here: the
 385           module will be called solaris.
 386
 387 endmenu
 388
 389 config SCHED_SMT
 390         bool "SMT (Hyperthreading) scheduler support"
 391         depends on SMP
 392         default y
 393         help
 394           SMT scheduler support improves the CPU scheduler's decision making
 395           when dealing with UltraSPARC cpus at a cost of slightly increased
 396           overhead in some places. If unsure say N here.
 397
 398 config CMDLINE_BOOL
 399         bool "Default bootloader kernel arguments"
 400
 401 config CMDLINE
 402         string "Initial kernel command string"
 403         depends on CMDLINE_BOOL
 404         default "console=ttyS0,9600 root=/dev/sda1"
 405         help
 406           Say Y here if you want to be able to pass default arguments to
 407           the kernel. This will be overridden by the bootloader, if you
 408           use one (such as SILO). This is most useful if you want to boot
 409           a kernel from TFTP, and want default options to be available
 410           with having them passed on the command line.
 411
 412           NOTE: This option WILL override the PROM bootargs setting!
 413
 414 source "net/Kconfig"
 415
 416 source "drivers/Kconfig"
 417
 418 source "drivers/sbus/char/Kconfig"
 419
 420 source "drivers/fc4/Kconfig"
 421
 422 source "fs/Kconfig"
 423
 424 menu "Instrumentation Support"
 425         depends on EXPERIMENTAL
 426
 427 source "arch/sparc64/oprofile/Kconfig"
 428
 429 config KPROBES
 430         bool "Kprobes (EXPERIMENTAL)"
 431         depends on KALLSYMS && EXPERIMENTAL && MODULES
 432         help
 433           Kprobes allows you to trap at almost any kernel address and
 434           execute a callback function.  register_kprobe() establishes
 435           a probepoint and specifies the callback.  Kprobes is useful
 436           for kernel debugging, non-intrusive instrumentation and testing.
 437           If in doubt, say "N".
 438 endmenu
 439
 440 source "arch/sparc64/Kconfig.debug"
 441
 442 source "security/Kconfig"
 443
 444 source "crypto/Kconfig"
 445
 446 source "lib/Kconfig"