arch/sparc/Kconfig

   1 # $Id: config.in,v 1.113 2002/01/24 22:14:44 davem Exp $
   2 # For a description of the syntax of this configuration file,
   3 # see Documentation/kbuild/kconfig-language.txt.
   4 #
   5
   6 mainmenu "Linux/SPARC Kernel Configuration"
   7
   8 config MMU
   9         bool
  10         default y
  11
  12 config HIGHMEM
  13         bool
  14         default y
  15
  16 config ZONE_DMA
  17         bool
  18         default y
  19
  20 config GENERIC_ISA_DMA
  21         bool
  22         default y
  23
  24 source "init/Kconfig"
  25
  26 menu "General machine setup"
  27
  28 config SMP
  29         bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
  30         ---help---
  31           This enables support for systems with more than one CPU. If you have
  32           a system with only one CPU, say N. If you have a system with more
  33           than one CPU, say Y.
  34
  35           If you say N here, the kernel will run on single and multiprocessor
  36           machines, but will use only one CPU of a multiprocessor machine. If
  37           you say Y here, the kernel will run on many, but not all,
  38           singleprocessor machines. On a singleprocessor machine, the kernel
  39           will run faster if you say N here.
  40
  41           People using multiprocessor machines who say Y here should also say
  42           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
  43           Management" code will be disabled if you say Y here.
  44
  45           See also the <file:Documentation/smp.txt>,
  46           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  47           <http://www.tldp.org/docs.html#howto>.
  48
  49           If you don't know what to do here, say N.
  50
  51 config NR_CPUS
  52         int "Maximum number of CPUs (2-32)"
  53         range 2 32
  54         depends on SMP
  55         default "32"
  56
  57 config SPARC
  58         bool
  59         default y
  60
  61 # Identify this as a Sparc32 build
  62 config SPARC32
  63         bool
  64         default y
  65         help
  66           SPARC is a family of RISC microprocessors designed and marketed by
  67           Sun Microsystems, incorporated.  They are very widely found in Sun
  68           workstations and clones. This port covers the original 32-bit SPARC;
  69           it is old and stable and usually considered one of the "big three"
  70           along with the Intel and Alpha ports.  The UltraLinux project
  71           maintains both the SPARC32 and SPARC64 ports; its web page is
  72           available at <http://www.ultralinux.org/>.
  73
  74 # Global things across all Sun machines.
  75 config ISA
  76         bool
  77         help
  78           ISA is found on Espresso only and is not supported currently.
  79           Say N
  80
  81 config EISA
  82         bool
  83         help
  84           EISA is not supported.
  85           Say N
  86
  87 config MCA
  88         bool
  89         help
  90           MCA is not supported.
  91           Say N
  92
  93 config PCMCIA
  94         tristate
  95         ---help---
  96           Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
  97           computer.  These are credit-card size devices such as network cards,
  98           modems or hard drives often used with laptops computers.  There are
  99           actually two varieties of these cards: the older 16 bit PCMCIA cards
 100           and the newer 32 bit CardBus cards.  If you want to use CardBus
 101           cards, you need to say Y here and also to "CardBus support" below.
 102
 103           To use your PC-cards, you will need supporting software from David
 104           Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
 105           for location).  Please also read the PCMCIA-HOWTO, available from
 106           <http://www.tldp.org/docs.html#howto>.
 107
 108           To compile this driver as modules, choose M here: the
 109           modules will be called pcmcia_core and ds.
 110
 111 config SBUS
 112         bool
 113         default y
 114
 115 config SBUSCHAR
 116         bool
 117         default y
 118
 119 config SERIAL_CONSOLE
 120         bool
 121         default y
 122         ---help---
 123           If you say Y here, it will be possible to use a serial port as the
 124           system console (the system console is the device which receives all
 125           kernel messages and warnings and which allows logins in single user
 126           mode). This could be useful if some terminal or printer is connected
 127           to that serial port.
 128
 129           Even if you say Y here, the currently visible virtual console
 130           (/dev/tty0) will still be used as the system console by default, but
 131           you can alter that using a kernel command line option such as
 132           "console=ttyS1". (Try "man bootparam" or see the documentation of
 133           your boot loader (silo) about how to pass options to the kernel at
 134           boot time.)
 135
 136           If you don't have a graphics card installed and you say Y here, the
 137           kernel will automatically use the first serial line, /dev/ttyS0, as
 138           system console.
 139
 140           If unsure, say N.
 141
 142 config SUN_AUXIO
 143         bool
 144         default y
 145
 146 config SUN_IO
 147         bool
 148         default y
 149
 150 config RWSEM_GENERIC_SPINLOCK
 151         bool
 152         default y
 153
 154 config RWSEM_XCHGADD_ALGORITHM
 155         bool
 156
 157 config GENERIC_FIND_NEXT_BIT
 158         bool
 159         default y
 160
 161 config GENERIC_HWEIGHT
 162         bool
 163         default y
 164
 165 config GENERIC_CALIBRATE_DELAY
 166         bool
 167         default y
 168
 169 config ARCH_MAY_HAVE_PC_FDC
 170         bool
 171         default y
 172
 173 config ARCH_HAS_ILOG2_U32
 174         bool
 175         default n
 176
 177 config ARCH_HAS_ILOG2_U64
 178         bool
 179         default n
 180
 181 config SUN_PM
 182         bool
 183         default y
 184         help
 185           Enable power management and CPU standby features on supported
 186           SPARC platforms.
 187
 188 config SUN4
 189         bool "Support for SUN4 machines (disables SUN4[CDM] support)"
 190         depends on !SMP
 191         default n
 192         help
 193           Say Y here if, and only if, your machine is a sun4. Note that
 194           a kernel compiled with this option will run only on sun4.
 195           (And the current version will probably work only on sun4/330.)
 196
 197 if !SUN4
 198
 199 config PCI
 200         bool "Support for PCI and PS/2 keyboard/mouse"
 201         help
 202           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 203           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 204           All of these platforms are extremely obscure, so say N if unsure.
 205
 206 source "drivers/pci/Kconfig"
 207
 208 endif
 209
 210 config SUN_OPENPROMFS
 211         tristate "Openprom tree appears in /proc/openprom"
 212         help
 213           If you say Y, the OpenPROM device tree will be available as a
 214           virtual file system, which you can mount to /proc/openprom by "mount
 215           -t openpromfs none /proc/openprom".
 216
 217           To compile the /proc/openprom support as a module, choose M here: the
 218           module will be called openpromfs.
 219
 220           Only choose N if you know in advance that you will not need to modify
 221           OpenPROM settings on the running system.
 222
 223 config SPARC_LED
 224         tristate "Sun4m LED driver"
 225         help
 226           This driver toggles the front-panel LED on sun4m systems
 227           in a user-specifiable manner.  Its state can be probed
 228           by reading /proc/led and its blinking mode can be changed
 229           via writes to /proc/led
 230
 231 source "fs/Kconfig.binfmt"
 232
 233 config SUNOS_EMUL
 234         bool "SunOS binary emulation"
 235         help
 236           This allows you to run most SunOS binaries.  If you want to do this,
 237           say Y here and place appropriate files in /usr/gnemul/sunos. See
 238           <http://www.ultralinux.org/faq.html> for more information.  If you
 239           want to run SunOS binaries on an Ultra you must also say Y to
 240           "Kernel support for 32-bit a.out binaries" above.
 241
 242 source "mm/Kconfig"
 243
 244 endmenu
 245
 246 source "net/Kconfig"
 247
 248 source "drivers/Kconfig"
 249
 250 if !SUN4
 251 source "drivers/sbus/char/Kconfig"
 252 endif
 253
 254 # This one must be before the filesystem configs. -DaveM
 255
 256 menu "Unix98 PTY support"
 257
 258 config UNIX98_PTYS
 259         bool "Unix98 PTY support"
 260         ---help---
 261           A pseudo terminal (PTY) is a software device consisting of two
 262           halves: a master and a slave. The slave device behaves identical to
 263           a physical terminal; the master device is used by a process to
 264           read data from and write data to the slave, thereby emulating a
 265           terminal. Typical programs for the master side are telnet servers
 266           and xterms.
 267
 268           Linux has traditionally used the BSD-like names /dev/ptyxx for
 269           masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
 270           has a number of problems. The GNU C library glibc 2.1 and later,
 271           however, supports the Unix98 naming standard: in order to acquire a
 272           pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
 273           terminal is then made available to the process and the pseudo
 274           terminal slave can be accessed as /dev/pts/<number>. What was
 275           traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
 276
 277           The entries in /dev/pts/ are created on the fly by a virtual
 278           file system; therefore, if you say Y here you should say Y to
 279           "/dev/pts file system for Unix98 PTYs" as well.
 280
 281           If you want to say Y here, you need to have the C library glibc 2.1
 282           or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
 283           Read the instructions in <file:Documentation/Changes> pertaining to
 284           pseudo terminals. It's safe to say N.
 285
 286 config UNIX98_PTY_COUNT
 287         int "Maximum number of Unix98 PTYs in use (0-2048)"
 288         depends on UNIX98_PTYS
 289         default "256"
 290         help
 291           The maximum number of Unix98 PTYs that can be used at any one time.
 292           The default is 256, and should be enough for desktop systems. Server
 293           machines which support incoming telnet/rlogin/ssh connections and/or
 294           serve several X terminals may want to increase this: every incoming
 295           connection and every xterm uses up one PTY.
 296
 297           When not in use, each additional set of 256 PTYs occupy
 298           approximately 8 KB of kernel memory on 32-bit architectures.
 299
 300 endmenu
 301
 302 source "fs/Kconfig"
 303
 304 menu "Instrumentation Support"
 305         depends on EXPERIMENTAL
 306
 307 source "arch/sparc/oprofile/Kconfig"
 308
 309 endmenu
 310
 311 source "arch/sparc/Kconfig.debug"
 312
 313 source "security/Kconfig"
 314
 315 source "crypto/Kconfig"
 316
 317 source "lib/Kconfig"