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 UID16
  13         bool
  14         default y
  15
  16 config HIGHMEM
  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         depends on BROKEN
  31         ---help---
  32           This enables support for systems with more than one CPU. If you have
  33           a system with only one CPU, say N. If you have a system with more
  34           than one CPU, say Y.
  35
  36           If you say N here, the kernel will run on single and multiprocessor
  37           machines, but will use only one CPU of a multiprocessor machine. If
  38           you say Y here, the kernel will run on many, but not all,
  39           singleprocessor machines. On a singleprocessor machine, the kernel
  40           will run faster if you say N here.
  41
  42           People using multiprocessor machines who say Y here should also say
  43           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
  44           Management" code will be disabled if you say Y here.
  45
  46           See also the <file:Documentation/smp.txt>,
  47           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  48           <http://www.tldp.org/docs.html#howto>.
  49
  50           If you don't know what to do here, say N.
  51
  52 config NR_CPUS
  53         int "Maximum number of CPUs (2-32)"
  54         range 2 32
  55         depends on SMP
  56         default "32"
  57
  58 # Identify this as a Sparc32 build
  59 config SPARC32
  60         bool
  61         default y
  62         help
  63           SPARC is a family of RISC microprocessors designed and marketed by
  64           Sun Microsystems, incorporated.  They are very widely found in Sun
  65           workstations and clones. This port covers the original 32-bit SPARC;
  66           it is old and stable and usually considered one of the "big three"
  67           along with the Intel and Alpha ports.  The UltraLinux project
  68           maintains both the SPARC32 and SPARC64 ports; its web page is
  69           available at <http://www.ultralinux.org/>.
  70
  71 # Global things across all Sun machines.
  72 config ISA
  73         bool
  74         help
  75           ISA is found on Espresso only and is not supported currently.
  76           Say N
  77
  78 config EISA
  79         bool
  80         help
  81           EISA is not supported.
  82           Say N
  83
  84 config MCA
  85         bool
  86         help
  87           MCA is not supported.
  88           Say N
  89
  90 config PCMCIA
  91         tristate
  92         ---help---
  93           Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
  94           computer.  These are credit-card size devices such as network cards,
  95           modems or hard drives often used with laptops computers.  There are
  96           actually two varieties of these cards: the older 16 bit PCMCIA cards
  97           and the newer 32 bit CardBus cards.  If you want to use CardBus
  98           cards, you need to say Y here and also to "CardBus support" below.
  99
 100           To use your PC-cards, you will need supporting software from David
 101           Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
 102           for location).  Please also read the PCMCIA-HOWTO, available from
 103           <http://www.tldp.org/docs.html#howto>.
 104
 105           To compile this driver as modules, choose M here: the
 106           modules will be called pcmcia_core and ds.
 107
 108 config SBUS
 109         bool
 110         default y
 111
 112 config SBUSCHAR
 113         bool
 114         default y
 115
 116 config SERIAL_CONSOLE
 117         bool
 118         default y
 119         ---help---
 120           If you say Y here, it will be possible to use a serial port as the
 121           system console (the system console is the device which receives all
 122           kernel messages and warnings and which allows logins in single user
 123           mode). This could be useful if some terminal or printer is connected
 124           to that serial port.
 125
 126           Even if you say Y here, the currently visible virtual console
 127           (/dev/tty0) will still be used as the system console by default, but
 128           you can alter that using a kernel command line option such as
 129           "console=ttyS1". (Try "man bootparam" or see the documentation of
 130           your boot loader (silo) about how to pass options to the kernel at
 131           boot time.)
 132
 133           If you don't have a graphics card installed and you say Y here, the
 134           kernel will automatically use the first serial line, /dev/ttyS0, as
 135           system console.
 136
 137           If unsure, say N.
 138
 139 config SUN_AUXIO
 140         bool
 141         default y
 142
 143 config SUN_IO
 144         bool
 145         default y
 146
 147 config RWSEM_GENERIC_SPINLOCK
 148         bool
 149         default y
 150
 151 config RWSEM_XCHGADD_ALGORITHM
 152         bool
 153
 154 config GENERIC_CALIBRATE_DELAY
 155         bool
 156         default y
 157
 158 config ARCH_MAY_HAVE_PC_FDC
 159         bool
 160         default y
 161
 162 config SUN_PM
 163         bool
 164         default y
 165         help
 166           Enable power management and CPU standby features on supported
 167           SPARC platforms.
 168
 169 config SUN4
 170         bool "Support for SUN4 machines (disables SUN4[CDM] support)"
 171         depends on !SMP
 172         default n
 173         help
 174           Say Y here if, and only if, your machine is a sun4. Note that
 175           a kernel compiled with this option will run only on sun4.
 176           (And the current version will probably work only on sun4/330.)
 177
 178 if !SUN4
 179
 180 config PCI
 181         bool "Support for PCI and PS/2 keyboard/mouse"
 182         help
 183           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 184           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 185           All of these platforms are extremely obscure, so say N if unsure.
 186
 187 source "drivers/pci/Kconfig"
 188
 189 endif
 190
 191 config SUN_OPENPROMFS
 192         tristate "Openprom tree appears in /proc/openprom"
 193         help
 194           If you say Y, the OpenPROM device tree will be available as a
 195           virtual file system, which you can mount to /proc/openprom by "mount
 196           -t openpromfs none /proc/openprom".
 197
 198           To compile the /proc/openprom support as a module, choose M here: the
 199           module will be called openpromfs.
 200
 201           Only choose N if you know in advance that you will not need to modify
 202           OpenPROM settings on the running system.
 203
 204 source "fs/Kconfig.binfmt"
 205
 206 config SUNOS_EMUL
 207         bool "SunOS binary emulation"
 208         help
 209           This allows you to run most SunOS binaries.  If you want to do this,
 210           say Y here and place appropriate files in /usr/gnemul/sunos. See
 211           <http://www.ultralinux.org/faq.html> for more information.  If you
 212           want to run SunOS binaries on an Ultra you must also say Y to
 213           "Kernel support for 32-bit a.out binaries" above.
 214
 215 source "mm/Kconfig"
 216
 217 endmenu
 218
 219 source "net/Kconfig"
 220
 221 source "drivers/Kconfig"
 222
 223 if !SUN4
 224 source "drivers/sbus/char/Kconfig"
 225 endif
 226
 227 # This one must be before the filesystem configs. -DaveM
 228
 229 menu "Unix98 PTY support"
 230
 231 config UNIX98_PTYS
 232         bool "Unix98 PTY support"
 233         ---help---
 234           A pseudo terminal (PTY) is a software device consisting of two
 235           halves: a master and a slave. The slave device behaves identical to
 236           a physical terminal; the master device is used by a process to
 237           read data from and write data to the slave, thereby emulating a
 238           terminal. Typical programs for the master side are telnet servers
 239           and xterms.
 240
 241           Linux has traditionally used the BSD-like names /dev/ptyxx for
 242           masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
 243           has a number of problems. The GNU C library glibc 2.1 and later,
 244           however, supports the Unix98 naming standard: in order to acquire a
 245           pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
 246           terminal is then made available to the process and the pseudo
 247           terminal slave can be accessed as /dev/pts/<number>. What was
 248           traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
 249
 250           The entries in /dev/pts/ are created on the fly by a virtual
 251           file system; therefore, if you say Y here you should say Y to
 252           "/dev/pts file system for Unix98 PTYs" as well.
 253
 254           If you want to say Y here, you need to have the C library glibc 2.1
 255           or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
 256           Read the instructions in <file:Documentation/Changes> pertaining to
 257           pseudo terminals. It's safe to say N.
 258
 259 config UNIX98_PTY_COUNT
 260         int "Maximum number of Unix98 PTYs in use (0-2048)"
 261         depends on UNIX98_PTYS
 262         default "256"
 263         help
 264           The maximum number of Unix98 PTYs that can be used at any one time.
 265           The default is 256, and should be enough for desktop systems. Server
 266           machines which support incoming telnet/rlogin/ssh connections and/or
 267           serve several X terminals may want to increase this: every incoming
 268           connection and every xterm uses up one PTY.
 269
 270           When not in use, each additional set of 256 PTYs occupy
 271           approximately 8 KB of kernel memory on 32-bit architectures.
 272
 273 endmenu
 274
 275 source "fs/Kconfig"
 276
 277 source "arch/sparc/Kconfig.debug"
 278
 279 source "security/Kconfig"
 280
 281 source "crypto/Kconfig"
 282
 283 source "lib/Kconfig"