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