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Linus Torvalds1da177e2005-04-16 15:20:36 -07001# $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
6mainmenu "Linux/SPARC Kernel Configuration"
7
8config MMU
9 bool
10 default y
11
12config UID16
13 bool
14 default y
15
16config HIGHMEM
17 bool
18 default y
19
20config GENERIC_ISA_DMA
21 bool
22 default y
23
24source "init/Kconfig"
25
26menu "General machine setup"
27
28config VT
29 bool
30 select INPUT
31 default y
32 ---help---
33 If you say Y here, you will get support for terminal devices with
34 display and keyboard devices. These are called "virtual" because you
35 can run several virtual terminals (also called virtual consoles) on
36 one physical terminal. This is rather useful, for example one
37 virtual terminal can collect system messages and warnings, another
38 one can be used for a text-mode user session, and a third could run
39 an X session, all in parallel. Switching between virtual terminals
40 is done with certain key combinations, usually Alt-<function key>.
41
42 The setterm command ("man setterm") can be used to change the
43 properties (such as colors or beeping) of a virtual terminal. The
44 man page console_codes(4) ("man console_codes") contains the special
45 character sequences that can be used to change those properties
46 directly. The fonts used on virtual terminals can be changed with
47 the setfont ("man setfont") command and the key bindings are defined
48 with the loadkeys ("man loadkeys") command.
49
50 You need at least one virtual terminal device in order to make use
51 of your keyboard and monitor. Therefore, only people configuring an
52 embedded system would want to say N here in order to save some
53 memory; the only way to log into such a system is then via a serial
54 or network connection.
55
56 If unsure, say Y, or else you won't be able to do much with your new
57 shiny Linux system :-)
58
59config VT_CONSOLE
60 bool
61 default y
62 ---help---
63 The system console is the device which receives all kernel messages
64 and warnings and which allows logins in single user mode. If you
65 answer Y here, a virtual terminal (the device used to interact with
66 a physical terminal) can be used as system console. This is the most
67 common mode of operations, so you should say Y here unless you want
68 the kernel messages be output only to a serial port (in which case
69 you should say Y to "Console on serial port", below).
70
71 If you do say Y here, by default the currently visible virtual
72 terminal (/dev/tty0) will be used as system console. You can change
73 that with a kernel command line option such as "console=tty3" which
74 would use the third virtual terminal as system console. (Try "man
75 bootparam" or see the documentation of your boot loader (lilo or
76 loadlin) about how to pass options to the kernel at boot time.)
77
78 If unsure, say Y.
79
80config HW_CONSOLE
81 bool
82 default y
83
84config SMP
85 bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
86 depends on BROKEN
87 ---help---
88 This enables support for systems with more than one CPU. If you have
89 a system with only one CPU, say N. If you have a system with more
90 than one CPU, say Y.
91
92 If you say N here, the kernel will run on single and multiprocessor
93 machines, but will use only one CPU of a multiprocessor machine. If
94 you say Y here, the kernel will run on many, but not all,
95 singleprocessor machines. On a singleprocessor machine, the kernel
96 will run faster if you say N here.
97
98 People using multiprocessor machines who say Y here should also say
99 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
100 Management" code will be disabled if you say Y here.
101
102 See also the <file:Documentation/smp.txt>,
103 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
104 <http://www.tldp.org/docs.html#howto>.
105
106 If you don't know what to do here, say N.
107
108config NR_CPUS
109 int "Maximum number of CPUs (2-32)"
110 range 2 32
111 depends on SMP
112 default "32"
113
114# Identify this as a Sparc32 build
115config SPARC32
116 bool
117 default y
118 help
119 SPARC is a family of RISC microprocessors designed and marketed by
120 Sun Microsystems, incorporated. They are very widely found in Sun
121 workstations and clones. This port covers the original 32-bit SPARC;
122 it is old and stable and usually considered one of the "big three"
123 along with the Intel and Alpha ports. The UltraLinux project
124 maintains both the SPARC32 and SPARC64 ports; its web page is
125 available at <http://www.ultralinux.org/>.
126
127# Global things across all Sun machines.
128config ISA
129 bool
130 help
131 ISA is found on Espresso only and is not supported currently.
132 Say N
133
134config EISA
135 bool
136 help
137 EISA is not supported.
138 Say N
139
140config MCA
141 bool
142 help
143 MCA is not supported.
144 Say N
145
146config PCMCIA
147 tristate
148 ---help---
149 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
150 computer. These are credit-card size devices such as network cards,
151 modems or hard drives often used with laptops computers. There are
152 actually two varieties of these cards: the older 16 bit PCMCIA cards
153 and the newer 32 bit CardBus cards. If you want to use CardBus
154 cards, you need to say Y here and also to "CardBus support" below.
155
156 To use your PC-cards, you will need supporting software from David
157 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
158 for location). Please also read the PCMCIA-HOWTO, available from
159 <http://www.tldp.org/docs.html#howto>.
160
161 To compile this driver as modules, choose M here: the
162 modules will be called pcmcia_core and ds.
163
164config SBUS
165 bool
166 default y
167
168config SBUSCHAR
169 bool
170 default y
171
172config SERIAL_CONSOLE
173 bool
174 default y
175 ---help---
176 If you say Y here, it will be possible to use a serial port as the
177 system console (the system console is the device which receives all
178 kernel messages and warnings and which allows logins in single user
179 mode). This could be useful if some terminal or printer is connected
180 to that serial port.
181
182 Even if you say Y here, the currently visible virtual console
183 (/dev/tty0) will still be used as the system console by default, but
184 you can alter that using a kernel command line option such as
185 "console=ttyS1". (Try "man bootparam" or see the documentation of
186 your boot loader (silo) about how to pass options to the kernel at
187 boot time.)
188
189 If you don't have a graphics card installed and you say Y here, the
190 kernel will automatically use the first serial line, /dev/ttyS0, as
191 system console.
192
193 If unsure, say N.
194
195config SUN_AUXIO
196 bool
197 default y
198
199config SUN_IO
200 bool
201 default y
202
203config RWSEM_GENERIC_SPINLOCK
204 bool
205 default y
206
207config RWSEM_XCHGADD_ALGORITHM
208 bool
209
210config GENERIC_CALIBRATE_DELAY
211 bool
212 default y
213
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100214config ARCH_MAY_HAVE_PC_FDC
215 bool
216 default y
217
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218config SUN_PM
219 bool
220 default y
221 help
222 Enable power management and CPU standby features on supported
223 SPARC platforms.
224
225config SUN4
226 bool "Support for SUN4 machines (disables SUN4[CDM] support)"
227 depends on !SMP
228 default n
229 help
230 Say Y here if, and only if, your machine is a sun4. Note that
231 a kernel compiled with this option will run only on sun4.
232 (And the current version will probably work only on sun4/330.)
233
234if !SUN4
235
236config PCI
237 bool "Support for PCI and PS/2 keyboard/mouse"
238 help
239 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
240 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
241 All of these platforms are extremely obscure, so say N if unsure.
242
243source "drivers/pci/Kconfig"
244
245endif
246
247config SUN_OPENPROMFS
248 tristate "Openprom tree appears in /proc/openprom"
249 help
250 If you say Y, the OpenPROM device tree will be available as a
251 virtual file system, which you can mount to /proc/openprom by "mount
252 -t openpromfs none /proc/openprom".
253
254 To compile the /proc/openprom support as a module, choose M here: the
255 module will be called openpromfs.
256
257 Only choose N if you know in advance that you will not need to modify
258 OpenPROM settings on the running system.
259
260source "fs/Kconfig.binfmt"
261
262config SUNOS_EMUL
263 bool "SunOS binary emulation"
264 help
265 This allows you to run most SunOS binaries. If you want to do this,
266 say Y here and place appropriate files in /usr/gnemul/sunos. See
267 <http://www.ultralinux.org/faq.html> for more information. If you
268 want to run SunOS binaries on an Ultra you must also say Y to
269 "Kernel support for 32-bit a.out binaries" above.
270
William Lee Irwin III30aaa802005-06-23 00:10:18 -0700271source "mm/Kconfig"
272
273endmenu
274
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700275source "net/Kconfig"
276
William Lee Irwin III30aaa802005-06-23 00:10:18 -0700277source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279if !SUN4
280source "drivers/sbus/char/Kconfig"
281endif
282
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283# This one must be before the filesystem configs. -DaveM
284
285menu "Unix98 PTY support"
286
287config UNIX98_PTYS
288 bool "Unix98 PTY support"
289 ---help---
290 A pseudo terminal (PTY) is a software device consisting of two
291 halves: a master and a slave. The slave device behaves identical to
292 a physical terminal; the master device is used by a process to
293 read data from and write data to the slave, thereby emulating a
294 terminal. Typical programs for the master side are telnet servers
295 and xterms.
296
297 Linux has traditionally used the BSD-like names /dev/ptyxx for
298 masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
299 has a number of problems. The GNU C library glibc 2.1 and later,
300 however, supports the Unix98 naming standard: in order to acquire a
301 pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
302 terminal is then made available to the process and the pseudo
303 terminal slave can be accessed as /dev/pts/<number>. What was
304 traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
305
306 The entries in /dev/pts/ are created on the fly by a virtual
307 file system; therefore, if you say Y here you should say Y to
308 "/dev/pts file system for Unix98 PTYs" as well.
309
310 If you want to say Y here, you need to have the C library glibc 2.1
311 or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
312 Read the instructions in <file:Documentation/Changes> pertaining to
313 pseudo terminals. It's safe to say N.
314
315config UNIX98_PTY_COUNT
316 int "Maximum number of Unix98 PTYs in use (0-2048)"
317 depends on UNIX98_PTYS
318 default "256"
319 help
320 The maximum number of Unix98 PTYs that can be used at any one time.
321 The default is 256, and should be enough for desktop systems. Server
322 machines which support incoming telnet/rlogin/ssh connections and/or
323 serve several X terminals may want to increase this: every incoming
324 connection and every xterm uses up one PTY.
325
326 When not in use, each additional set of 256 PTYs occupy
327 approximately 8 KB of kernel memory on 32-bit architectures.
328
329endmenu
330
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331source "fs/Kconfig"
332
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333source "arch/sparc/Kconfig.debug"
334
335source "security/Kconfig"
336
337source "crypto/Kconfig"
338
339source "lib/Kconfig"