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