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.
6 mainmenu "Linux/SPARC Kernel Configuration"
16 config GENERIC_ISA_DMA
22 menu "General machine setup"
25 bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
27 This enables support for systems with more than one CPU. If you have
28 a system with only one CPU, say N. If you have a system with more
31 If you say N here, the kernel will run on single and multiprocessor
32 machines, but will use only one CPU of a multiprocessor machine. If
33 you say Y here, the kernel will run on many, but not all,
34 singleprocessor machines. On a singleprocessor machine, the kernel
35 will run faster if you say N here.
37 People using multiprocessor machines who say Y here should also say
38 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
39 Management" code will be disabled if you say Y here.
41 See also the <file:Documentation/smp.txt>,
42 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
43 <http://www.tldp.org/docs.html#howto>.
45 If you don't know what to do here, say N.
48 int "Maximum number of CPUs (2-32)"
57 # Identify this as a Sparc32 build
62 SPARC is a family of RISC microprocessors designed and marketed by
63 Sun Microsystems, incorporated. They are very widely found in Sun
64 workstations and clones. This port covers the original 32-bit SPARC;
65 it is old and stable and usually considered one of the "big three"
66 along with the Intel and Alpha ports. The UltraLinux project
67 maintains both the SPARC32 and SPARC64 ports; its web page is
68 available at <http://www.ultralinux.org/>.
70 # Global things across all Sun machines.
74 ISA is found on Espresso only and is not supported currently.
80 EISA is not supported.
92 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
93 computer. These are credit-card size devices such as network cards,
94 modems or hard drives often used with laptops computers. There are
95 actually two varieties of these cards: the older 16 bit PCMCIA cards
96 and the newer 32 bit CardBus cards. If you want to use CardBus
97 cards, you need to say Y here and also to "CardBus support" below.
99 To use your PC-cards, you will need supporting software from David
100 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
101 for location). Please also read the PCMCIA-HOWTO, available from
102 <http://www.tldp.org/docs.html#howto>.
104 To compile this driver as modules, choose M here: the
105 modules will be called pcmcia_core and ds.
115 config SERIAL_CONSOLE
119 If you say Y here, it will be possible to use a serial port as the
120 system console (the system console is the device which receives all
121 kernel messages and warnings and which allows logins in single user
122 mode). This could be useful if some terminal or printer is connected
125 Even if you say Y here, the currently visible virtual console
126 (/dev/tty0) will still be used as the system console by default, but
127 you can alter that using a kernel command line option such as
128 "console=ttyS1". (Try "man bootparam" or see the documentation of
129 your boot loader (silo) about how to pass options to the kernel at
132 If you don't have a graphics card installed and you say Y here, the
133 kernel will automatically use the first serial line, /dev/ttyS0, as
146 config RWSEM_GENERIC_SPINLOCK
150 config RWSEM_XCHGADD_ALGORITHM
153 config GENERIC_FIND_NEXT_BIT
157 config GENERIC_HWEIGHT
161 config GENERIC_CALIBRATE_DELAY
165 config ARCH_MAY_HAVE_PC_FDC
169 config ARCH_HAS_ILOG2_U32
173 config ARCH_HAS_ILOG2_U64
181 Enable power management and CPU standby features on supported
185 bool "Support for SUN4 machines (disables SUN4[CDM] support)"
189 Say Y here if, and only if, your machine is a sun4. Note that
190 a kernel compiled with this option will run only on sun4.
191 (And the current version will probably work only on sun4/330.)
196 bool "Support for PCI and PS/2 keyboard/mouse"
198 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
199 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
200 All of these platforms are extremely obscure, so say N if unsure.
202 source "drivers/pci/Kconfig"
206 config SUN_OPENPROMFS
207 tristate "Openprom tree appears in /proc/openprom"
209 If you say Y, the OpenPROM device tree will be available as a
210 virtual file system, which you can mount to /proc/openprom by "mount
211 -t openpromfs none /proc/openprom".
213 To compile the /proc/openprom support as a module, choose M here: the
214 module will be called openpromfs.
216 Only choose N if you know in advance that you will not need to modify
217 OpenPROM settings on the running system.
220 tristate "Sun4m LED driver"
222 This driver toggles the front-panel LED on sun4m systems
223 in a user-specifiable manner. Its state can be probed
224 by reading /proc/led and its blinking mode can be changed
225 via writes to /proc/led
227 source "fs/Kconfig.binfmt"
230 bool "SunOS binary emulation"
232 This allows you to run most SunOS binaries. If you want to do this,
233 say Y here and place appropriate files in /usr/gnemul/sunos. See
234 <http://www.ultralinux.org/faq.html> for more information. If you
235 want to run SunOS binaries on an Ultra you must also say Y to
236 "Kernel support for 32-bit a.out binaries" above.
244 source "drivers/Kconfig"
247 source "drivers/sbus/char/Kconfig"
250 # This one must be before the filesystem configs. -DaveM
252 menu "Unix98 PTY support"
255 bool "Unix98 PTY support"
257 A pseudo terminal (PTY) is a software device consisting of two
258 halves: a master and a slave. The slave device behaves identical to
259 a physical terminal; the master device is used by a process to
260 read data from and write data to the slave, thereby emulating a
261 terminal. Typical programs for the master side are telnet servers
264 Linux has traditionally used the BSD-like names /dev/ptyxx for
265 masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
266 has a number of problems. The GNU C library glibc 2.1 and later,
267 however, supports the Unix98 naming standard: in order to acquire a
268 pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
269 terminal is then made available to the process and the pseudo
270 terminal slave can be accessed as /dev/pts/<number>. What was
271 traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
273 The entries in /dev/pts/ are created on the fly by a virtual
274 file system; therefore, if you say Y here you should say Y to
275 "/dev/pts file system for Unix98 PTYs" as well.
277 If you want to say Y here, you need to have the C library glibc 2.1
278 or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
279 Read the instructions in <file:Documentation/Changes> pertaining to
280 pseudo terminals. It's safe to say N.
282 config UNIX98_PTY_COUNT
283 int "Maximum number of Unix98 PTYs in use (0-2048)"
284 depends on UNIX98_PTYS
287 The maximum number of Unix98 PTYs that can be used at any one time.
288 The default is 256, and should be enough for desktop systems. Server
289 machines which support incoming telnet/rlogin/ssh connections and/or
290 serve several X terminals may want to increase this: every incoming
291 connection and every xterm uses up one PTY.
293 When not in use, each additional set of 256 PTYs occupy
294 approximately 8 KB of kernel memory on 32-bit architectures.
300 menu "Instrumentation Support"
301 depends on EXPERIMENTAL
303 source "arch/sparc/oprofile/Kconfig"
307 source "arch/sparc/Kconfig.debug"
309 source "security/Kconfig"
311 source "crypto/Kconfig"