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"
20 config GENERIC_ISA_DMA
26 menu "General machine setup"
32 If you say Y here, you will get support for terminal devices with
33 display and keyboard devices. These are called "virtual" because you
34 can run several virtual terminals (also called virtual consoles) on
35 one physical terminal. This is rather useful, for example one
36 virtual terminal can collect system messages and warnings, another
37 one can be used for a text-mode user session, and a third could run
38 an X session, all in parallel. Switching between virtual terminals
39 is done with certain key combinations, usually Alt-<function key>.
41 The setterm command ("man setterm") can be used to change the
42 properties (such as colors or beeping) of a virtual terminal. The
43 man page console_codes(4) ("man console_codes") contains the special
44 character sequences that can be used to change those properties
45 directly. The fonts used on virtual terminals can be changed with
46 the setfont ("man setfont") command and the key bindings are defined
47 with the loadkeys ("man loadkeys") command.
49 You need at least one virtual terminal device in order to make use
50 of your keyboard and monitor. Therefore, only people configuring an
51 embedded system would want to say N here in order to save some
52 memory; the only way to log into such a system is then via a serial
53 or network connection.
55 If unsure, say Y, or else you won't be able to do much with your new
56 shiny Linux system :-)
62 The system console is the device which receives all kernel messages
63 and warnings and which allows logins in single user mode. If you
64 answer Y here, a virtual terminal (the device used to interact with
65 a physical terminal) can be used as system console. This is the most
66 common mode of operations, so you should say Y here unless you want
67 the kernel messages be output only to a serial port (in which case
68 you should say Y to "Console on serial port", below).
70 If you do say Y here, by default the currently visible virtual
71 terminal (/dev/tty0) will be used as system console. You can change
72 that with a kernel command line option such as "console=tty3" which
73 would use the third virtual terminal as system console. (Try "man
74 bootparam" or see the documentation of your boot loader (lilo or
75 loadlin) about how to pass options to the kernel at boot time.)
84 bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
87 This enables support for systems with more than one CPU. If you have
88 a system with only one CPU, like most personal computers, say N. If
89 you have a system with more than one CPU, say Y.
91 If you say N here, the kernel will run on single and multiprocessor
92 machines, but will use only one CPU of a multiprocessor machine. If
93 you say Y here, the kernel will run on many, but not all,
94 singleprocessor machines. On a singleprocessor machine, the kernel
95 will run faster if you say N here.
97 Note that if you say Y here and choose architecture "586" or
98 "Pentium" under "Processor family", the kernel will not work on 486
99 architectures. Similarly, multiprocessor kernels for the "PPro"
100 architecture may not work on all Pentium based boards.
102 People using multiprocessor machines who say Y here should also say
103 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
104 Management" code will be disabled if you say Y here.
106 See also the <file:Documentation/smp.txt>,
107 <file:Documentation/i386/IO-APIC.txt>,
108 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
109 <http://www.tldp.org/docs.html#howto>.
111 If you don't know what to do here, say N.
114 int "Maximum number of CPUs (2-32)"
119 # Identify this as a Sparc32 build
124 SPARC is a family of RISC microprocessors designed and marketed by
125 Sun Microsystems, incorporated. They are very widely found in Sun
126 workstations and clones. This port covers the original 32-bit SPARC;
127 it is old and stable and usually considered one of the "big three"
128 along with the Intel and Alpha ports. The UltraLinux project
129 maintains both the SPARC32 and SPARC64 ports; its web page is
130 available at <http://www.ultralinux.org/>.
132 # Global things across all Sun machines.
136 ISA is found on Espresso only and is not supported currently.
142 EISA is not supported.
148 MCA is not supported.
154 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
155 computer. These are credit-card size devices such as network cards,
156 modems or hard drives often used with laptops computers. There are
157 actually two varieties of these cards: the older 16 bit PCMCIA cards
158 and the newer 32 bit CardBus cards. If you want to use CardBus
159 cards, you need to say Y here and also to "CardBus support" below.
161 To use your PC-cards, you will need supporting software from David
162 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
163 for location). Please also read the PCMCIA-HOWTO, available from
164 <http://www.tldp.org/docs.html#howto>.
166 To compile this driver as modules, choose M here: the
167 modules will be called pcmcia_core and ds.
177 config SERIAL_CONSOLE
181 If you say Y here, it will be possible to use a serial port as the
182 system console (the system console is the device which receives all
183 kernel messages and warnings and which allows logins in single user
184 mode). This could be useful if some terminal or printer is connected
187 Even if you say Y here, the currently visible virtual console
188 (/dev/tty0) will still be used as the system console by default, but
189 you can alter that using a kernel command line option such as
190 "console=ttyS1". (Try "man bootparam" or see the documentation of
191 your boot loader (lilo or loadlin) about how to pass options to the
192 kernel at boot time.)
194 If you don't have a VGA card installed and you say Y here, the
195 kernel will automatically use the first serial line, /dev/ttyS0, as
208 config RWSEM_GENERIC_SPINLOCK
212 config RWSEM_XCHGADD_ALGORITHM
219 Enable power management and CPU standby features on supported
223 bool "Support for SUN4 machines (disables SUN4[CDM] support)"
226 Say Y here if, and only if, your machine is a sun4. Note that
227 a kernel compiled with this option will run only on sun4.
228 (And the current version will probably work only on sun4/330.)
233 bool "Support for PCI and PS/2 keyboard/mouse"
235 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
236 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
237 All of these platforms are extremely obscure, so say N if unsure.
239 source "drivers/pci/Kconfig"
243 config SUN_OPENPROMFS
244 tristate "Openprom tree appears in /proc/openprom"
246 If you say Y, the OpenPROM device tree will be available as a
247 virtual file system, which you can mount to /proc/openprom by "mount
248 -t openpromfs none /proc/openprom".
250 To compile the /proc/openprom support as a module, choose M here: the
251 module will be called openpromfs. If unsure, choose M.
253 source "fs/Kconfig.binfmt"
256 bool "SunOS binary emulation"
258 This allows you to run most SunOS binaries. If you want to do this,
259 say Y here and place appropriate files in /usr/gnemul/sunos. See
260 <http://www.ultralinux.org/faq.html> for more information. If you
261 want to run SunOS binaries on an Ultra you must also say Y to
262 "Kernel support for 32-bit a.out binaries" above.
264 source "drivers/parport/Kconfig"
267 tristate "Parallel printer support"
270 If you intend to attach a printer to the parallel port of your Linux
271 box (as opposed to using a serial printer; if the connector at the
272 printer has 9 or 25 holes ["female"], then it's serial), say Y.
273 Also read the Printing-HOWTO, available from
274 <http://www.tldp.org/docs.html#howto>.
276 It is possible to share one parallel port among several devices
277 (e.g. printer and ZIP drive) and it is safe to compile the
278 corresponding drivers into the kernel. If you want to compile this
279 driver as a module however, choose M here and read
280 <file:Documentation/parport.txt>. The module will be called lp.
282 If you have several parallel ports, you can specify which ports to
283 use with the "lp" kernel command line option. (Try "man bootparam"
284 or see the documentation of your boot loader (lilo or loadlin) about
285 how to pass options to the kernel at boot time.) The syntax of the
286 "lp" command line option can be found in <file:drivers/char/lp.c>.
288 If you have more than 8 printers, you need to increase the LP_NO
289 macro in lp.c and the PARPORT_MAX macro in parport.h.
293 source "drivers/base/Kconfig"
295 source "drivers/video/Kconfig"
297 source "drivers/mtd/Kconfig"
299 source "drivers/serial/Kconfig"
302 source "drivers/sbus/char/Kconfig"
305 source "drivers/block/Kconfig"
307 # Don't frighten a common SBus user
310 source "drivers/ide/Kconfig"
314 source "drivers/isdn/Kconfig"
316 source "drivers/scsi/Kconfig"
318 source "drivers/fc4/Kconfig"
320 source "drivers/md/Kconfig"
324 # This one must be before the filesystem configs. -DaveM
326 menu "Unix98 PTY support"
329 bool "Unix98 PTY support"
331 A pseudo terminal (PTY) is a software device consisting of two
332 halves: a master and a slave. The slave device behaves identical to
333 a physical terminal; the master device is used by a process to
334 read data from and write data to the slave, thereby emulating a
335 terminal. Typical programs for the master side are telnet servers
338 Linux has traditionally used the BSD-like names /dev/ptyxx for
339 masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
340 has a number of problems. The GNU C library glibc 2.1 and later,
341 however, supports the Unix98 naming standard: in order to acquire a
342 pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
343 terminal is then made available to the process and the pseudo
344 terminal slave can be accessed as /dev/pts/<number>. What was
345 traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
347 The entries in /dev/pts/ are created on the fly by a virtual
348 file system; therefore, if you say Y here you should say Y to
349 "/dev/pts file system for Unix98 PTYs" as well.
351 If you want to say Y here, you need to have the C library glibc 2.1
352 or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
353 Read the instructions in <file:Documentation/Changes> pertaining to
354 pseudo terminals. It's safe to say N.
356 config UNIX98_PTY_COUNT
357 int "Maximum number of Unix98 PTYs in use (0-2048)"
358 depends on UNIX98_PTYS
361 The maximum number of Unix98 PTYs that can be used at any one time.
362 The default is 256, and should be enough for desktop systems. Server
363 machines which support incoming telnet/rlogin/ssh connections and/or
364 serve several X terminals may want to increase this: every incoming
365 connection and every xterm uses up one PTY.
367 When not in use, each additional set of 256 PTYs occupy
368 approximately 8 KB of kernel memory on 32-bit architectures.
372 source "drivers/input/Kconfig"
376 source "sound/Kconfig"
378 source "drivers/usb/Kconfig"
380 source "drivers/char/watchdog/Kconfig"
382 source "arch/sparc/Kconfig.debug"
384 source "kernel/vserver/Kconfig"
386 source "security/Kconfig"
388 source "crypto/Kconfig"