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 config ARCH_NO_VIRT_TO_BUS
  25         def_bool y
  26
  27 config OF
  28         def_bool y
  29
  30 config ARCH_SUPPORTS_AOUT
  31         def_bool y
  32
  33 config HZ
  34         int
  35         default 100
  36
  37 source "init/Kconfig"
  38
  39 menu "General machine setup"
  40
  41 config SMP
  42         bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
  43         ---help---
  44           This enables support for systems with more than one CPU. If you have
  45           a system with only one CPU, say N. If you have a system with more
  46           than one CPU, say Y.
  47
  48           If you say N here, the kernel will run on single and multiprocessor
  49           machines, but will use only one CPU of a multiprocessor machine. If
  50           you say Y here, the kernel will run on many, but not all,
  51           singleprocessor machines. On a singleprocessor machine, the kernel
  52           will run faster if you say N here.
  53
  54           People using multiprocessor machines who say Y here should also say
  55           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
  56           Management" code will be disabled if you say Y here.
  57
  58           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
  59           available at <http://www.tldp.org/docs.html#howto>.
  60
  61           If you don't know what to do here, say N.
  62
  63 config NR_CPUS
  64         int "Maximum number of CPUs (2-32)"
  65         range 2 32
  66         depends on SMP
  67         default "32"
  68
  69 config SPARC
  70         bool
  71         default y
  72         select HAVE_IDE
  73         select HAVE_OPROFILE
  74
  75 # Identify this as a Sparc32 build
  76 config SPARC32
  77         bool
  78         default y
  79         help
  80           SPARC is a family of RISC microprocessors designed and marketed by
  81           Sun Microsystems, incorporated.  They are very widely found in Sun
  82           workstations and clones. This port covers the original 32-bit SPARC;
  83           it is old and stable and usually considered one of the "big three"
  84           along with the Intel and Alpha ports.  The UltraLinux project
  85           maintains both the SPARC32 and SPARC64 ports; its web page is
  86           available at <http://www.ultralinux.org/>.
  87
  88 # Global things across all Sun machines.
  89 config ISA
  90         bool
  91         help
  92           ISA is found on Espresso only and is not supported currently.
  93           Say N
  94
  95 config EISA
  96         bool
  97         help
  98           EISA is not supported.
  99           Say N
 100
 101 config MCA
 102         bool
 103         help
 104           MCA is not supported.
 105           Say N
 106
 107 config PCMCIA
 108         tristate
 109         ---help---
 110           Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
 111           computer.  These are credit-card size devices such as network cards,
 112           modems or hard drives often used with laptops computers.  There are
 113           actually two varieties of these cards: the older 16 bit PCMCIA cards
 114           and the newer 32 bit CardBus cards.  If you want to use CardBus
 115           cards, you need to say Y here and also to "CardBus support" below.
 116
 117           To use your PC-cards, you will need supporting software from David
 118           Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
 119           for location).  Please also read the PCMCIA-HOWTO, available from
 120           <http://www.tldp.org/docs.html#howto>.
 121
 122           To compile this driver as modules, choose M here: the
 123           modules will be called pcmcia_core and ds.
 124
 125 config SBUS
 126         bool
 127         default y
 128
 129 config SBUSCHAR
 130         bool
 131         default y
 132
 133 config SERIAL_CONSOLE
 134         bool
 135         default y
 136         ---help---
 137           If you say Y here, it will be possible to use a serial port as the
 138           system console (the system console is the device which receives all
 139           kernel messages and warnings and which allows logins in single user
 140           mode). This could be useful if some terminal or printer is connected
 141           to that serial port.
 142
 143           Even if you say Y here, the currently visible virtual console
 144           (/dev/tty0) will still be used as the system console by default, but
 145           you can alter that using a kernel command line option such as
 146           "console=ttyS1". (Try "man bootparam" or see the documentation of
 147           your boot loader (silo) about how to pass options to the kernel at
 148           boot time.)
 149
 150           If you don't have a graphics card installed and you say Y here, the
 151           kernel will automatically use the first serial line, /dev/ttyS0, as
 152           system console.
 153
 154           If unsure, say N.
 155
 156 config SUN_AUXIO
 157         bool
 158         default y
 159
 160 config SUN_IO
 161         bool
 162         default y
 163
 164 config RWSEM_GENERIC_SPINLOCK
 165         bool
 166         default y
 167
 168 config RWSEM_XCHGADD_ALGORITHM
 169         bool
 170
 171 config GENERIC_FIND_NEXT_BIT
 172         bool
 173         default y
 174
 175 config GENERIC_HWEIGHT
 176         bool
 177         default y
 178
 179 config GENERIC_CALIBRATE_DELAY
 180         bool
 181         default y
 182
 183 config ARCH_MAY_HAVE_PC_FDC
 184         bool
 185         default y
 186
 187 config ARCH_HAS_ILOG2_U32
 188         bool
 189         default n
 190
 191 config ARCH_HAS_ILOG2_U64
 192         bool
 193         default n
 194
 195 config EMULATED_CMPXCHG
 196         bool
 197         default y
 198         help
 199           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 200           is emulated, and therefore it is not completely atomic.
 201
 202 config SUN_PM
 203         bool
 204         default y
 205         help
 206           Enable power management and CPU standby features on supported
 207           SPARC platforms.
 208
 209 config SUN4
 210         bool "Support for SUN4 machines (disables SUN4[CDM] support)"
 211         depends on !SMP
 212         default n
 213         help
 214           Say Y here if, and only if, your machine is a sun4. Note that
 215           a kernel compiled with this option will run only on sun4.
 216           (And the current version will probably work only on sun4/330.)
 217
 218 if !SUN4
 219
 220 config PCI
 221         bool "Support for PCI and PS/2 keyboard/mouse"
 222         help
 223           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 224           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 225           All of these platforms are extremely obscure, so say N if unsure.
 226
 227 config PCI_SYSCALL
 228         def_bool PCI
 229
 230 source "drivers/pci/Kconfig"
 231
 232 endif
 233
 234 config NO_DMA
 235         def_bool !PCI
 236
 237 config SUN_OPENPROMFS
 238         tristate "Openprom tree appears in /proc/openprom"
 239         help
 240           If you say Y, the OpenPROM device tree will be available as a
 241           virtual file system, which you can mount to /proc/openprom by "mount
 242           -t openpromfs none /proc/openprom".
 243
 244           To compile the /proc/openprom support as a module, choose M here: the
 245           module will be called openpromfs.
 246
 247           Only choose N if you know in advance that you will not need to modify
 248           OpenPROM settings on the running system.
 249
 250 config SPARC_LED
 251         tristate "Sun4m LED driver"
 252         help
 253           This driver toggles the front-panel LED on sun4m systems
 254           in a user-specifiable manner.  Its state can be probed
 255           by reading /proc/led and its blinking mode can be changed
 256           via writes to /proc/led
 257
 258 source "fs/Kconfig.binfmt"
 259
 260 config SUNOS_EMUL
 261         bool "SunOS binary emulation"
 262         help
 263           This allows you to run most SunOS binaries.  If you want to do this,
 264           say Y here and place appropriate files in /usr/gnemul/sunos. See
 265           <http://www.ultralinux.org/faq.html> for more information.  If you
 266           want to run SunOS binaries on an Ultra you must also say Y to
 267           "Kernel support for 32-bit a.out binaries" above.
 268
 269 source "mm/Kconfig"
 270
 271 endmenu
 272
 273 source "net/Kconfig"
 274
 275 source "drivers/Kconfig"
 276
 277 if !SUN4
 278 source "drivers/sbus/char/Kconfig"
 279 endif
 280
 281 # This one must be before the filesystem configs. -DaveM
 282
 283 menu "Unix98 PTY support"
 284
 285 config UNIX98_PTYS
 286         bool "Unix98 PTY support"
 287         ---help---
 288           A pseudo terminal (PTY) is a software device consisting of two
 289           halves: a master and a slave. The slave device behaves identical to
 290           a physical terminal; the master device is used by a process to
 291           read data from and write data to the slave, thereby emulating a
 292           terminal. Typical programs for the master side are telnet servers
 293           and xterms.
 294
 295           Linux has traditionally used the BSD-like names /dev/ptyxx for
 296           masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
 297           has a number of problems. The GNU C library glibc 2.1 and later,
 298           however, supports the Unix98 naming standard: in order to acquire a
 299           pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
 300           terminal is then made available to the process and the pseudo
 301           terminal slave can be accessed as /dev/pts/<number>. What was
 302           traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
 303
 304           The entries in /dev/pts/ are created on the fly by a virtual
 305           file system; therefore, if you say Y here you should say Y to
 306           "/dev/pts file system for Unix98 PTYs" as well.
 307
 308           If you want to say Y here, you need to have the C library glibc 2.1
 309           or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
 310           Read the instructions in <file:Documentation/Changes> pertaining to
 311           pseudo terminals. It's safe to say N.
 312
 313 config UNIX98_PTY_COUNT
 314         int "Maximum number of Unix98 PTYs in use (0-2048)"
 315         depends on UNIX98_PTYS
 316         default "256"
 317         help
 318           The maximum number of Unix98 PTYs that can be used at any one time.
 319           The default is 256, and should be enough for desktop systems. Server
 320           machines which support incoming telnet/rlogin/ssh connections and/or
 321           serve several X terminals may want to increase this: every incoming
 322           connection and every xterm uses up one PTY.
 323
 324           When not in use, each additional set of 256 PTYs occupy
 325           approximately 8 KB of kernel memory on 32-bit architectures.
 326
 327 endmenu
 328
 329 source "fs/Kconfig"
 330
 331 source "arch/sparc/Kconfig.debug"
 332
 333 source "security/Kconfig"
 334
 335 source "crypto/Kconfig"
 336
 337 source "lib/Kconfig"