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