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_CALIBRATE_DELAY
157 config ARCH_MAY_HAVE_PC_FDC
165 Enable power management and CPU standby features on supported
169 bool "Support for SUN4 machines (disables SUN4[CDM] support)"
173 Say Y here if, and only if, your machine is a sun4. Note that
174 a kernel compiled with this option will run only on sun4.
175 (And the current version will probably work only on sun4/330.)
180 bool "Support for PCI and PS/2 keyboard/mouse"
182 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
183 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
184 All of these platforms are extremely obscure, so say N if unsure.
186 source "drivers/pci/Kconfig"
190 config SUN_OPENPROMFS
191 tristate "Openprom tree appears in /proc/openprom"
193 If you say Y, the OpenPROM device tree will be available as a
194 virtual file system, which you can mount to /proc/openprom by "mount
195 -t openpromfs none /proc/openprom".
197 To compile the /proc/openprom support as a module, choose M here: the
198 module will be called openpromfs.
200 Only choose N if you know in advance that you will not need to modify
201 OpenPROM settings on the running system.
204 tristate "Sun4m LED driver"
206 This driver toggles the front-panel LED on sun4m systems
207 in a user-specifyable manner. It's state can be probed
208 by reading /proc/led and it's blinking mode can be changed
209 via writes to /proc/led
211 source "fs/Kconfig.binfmt"
214 bool "SunOS binary emulation"
216 This allows you to run most SunOS binaries. If you want to do this,
217 say Y here and place appropriate files in /usr/gnemul/sunos. See
218 <http://www.ultralinux.org/faq.html> for more information. If you
219 want to run SunOS binaries on an Ultra you must also say Y to
220 "Kernel support for 32-bit a.out binaries" above.
228 source "drivers/Kconfig"
231 source "drivers/sbus/char/Kconfig"
234 # This one must be before the filesystem configs. -DaveM
236 menu "Unix98 PTY support"
239 bool "Unix98 PTY support"
241 A pseudo terminal (PTY) is a software device consisting of two
242 halves: a master and a slave. The slave device behaves identical to
243 a physical terminal; the master device is used by a process to
244 read data from and write data to the slave, thereby emulating a
245 terminal. Typical programs for the master side are telnet servers
248 Linux has traditionally used the BSD-like names /dev/ptyxx for
249 masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
250 has a number of problems. The GNU C library glibc 2.1 and later,
251 however, supports the Unix98 naming standard: in order to acquire a
252 pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
253 terminal is then made available to the process and the pseudo
254 terminal slave can be accessed as /dev/pts/<number>. What was
255 traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
257 The entries in /dev/pts/ are created on the fly by a virtual
258 file system; therefore, if you say Y here you should say Y to
259 "/dev/pts file system for Unix98 PTYs" as well.
261 If you want to say Y here, you need to have the C library glibc 2.1
262 or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
263 Read the instructions in <file:Documentation/Changes> pertaining to
264 pseudo terminals. It's safe to say N.
266 config UNIX98_PTY_COUNT
267 int "Maximum number of Unix98 PTYs in use (0-2048)"
268 depends on UNIX98_PTYS
271 The maximum number of Unix98 PTYs that can be used at any one time.
272 The default is 256, and should be enough for desktop systems. Server
273 machines which support incoming telnet/rlogin/ssh connections and/or
274 serve several X terminals may want to increase this: every incoming
275 connection and every xterm uses up one PTY.
277 When not in use, each additional set of 256 PTYs occupy
278 approximately 8 KB of kernel memory on 32-bit architectures.
284 source "arch/sparc/Kconfig.debug"
286 source "security/Kconfig"
288 source "crypto/Kconfig"