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