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)"
58 # Identify this as a Sparc32 build
63 SPARC is a family of RISC microprocessors designed and marketed by
64 Sun Microsystems, incorporated. They are very widely found in Sun
65 workstations and clones. This port covers the original 32-bit SPARC;
66 it is old and stable and usually considered one of the "big three"
67 along with the Intel and Alpha ports. The UltraLinux project
68 maintains both the SPARC32 and SPARC64 ports; its web page is
69 available at <http://www.ultralinux.org/>.
71 # Global things across all Sun machines.
75 ISA is found on Espresso only and is not supported currently.
81 EISA is not supported.
93 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
94 computer. These are credit-card size devices such as network cards,
95 modems or hard drives often used with laptops computers. There are
96 actually two varieties of these cards: the older 16 bit PCMCIA cards
97 and the newer 32 bit CardBus cards. If you want to use CardBus
98 cards, you need to say Y here and also to "CardBus support" below.
100 To use your PC-cards, you will need supporting software from David
101 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
102 for location). Please also read the PCMCIA-HOWTO, available from
103 <http://www.tldp.org/docs.html#howto>.
105 To compile this driver as modules, choose M here: the
106 modules will be called pcmcia_core and ds.
116 config SERIAL_CONSOLE
120 If you say Y here, it will be possible to use a serial port as the
121 system console (the system console is the device which receives all
122 kernel messages and warnings and which allows logins in single user
123 mode). This could be useful if some terminal or printer is connected
126 Even if you say Y here, the currently visible virtual console
127 (/dev/tty0) will still be used as the system console by default, but
128 you can alter that using a kernel command line option such as
129 "console=ttyS1". (Try "man bootparam" or see the documentation of
130 your boot loader (silo) about how to pass options to the kernel at
133 If you don't have a graphics card installed and you say Y here, the
134 kernel will automatically use the first serial line, /dev/ttyS0, as
147 config RWSEM_GENERIC_SPINLOCK
151 config RWSEM_XCHGADD_ALGORITHM
154 config GENERIC_CALIBRATE_DELAY
158 config ARCH_MAY_HAVE_PC_FDC
166 Enable power management and CPU standby features on supported
170 bool "Support for SUN4 machines (disables SUN4[CDM] support)"
174 Say Y here if, and only if, your machine is a sun4. Note that
175 a kernel compiled with this option will run only on sun4.
176 (And the current version will probably work only on sun4/330.)
181 bool "Support for PCI and PS/2 keyboard/mouse"
183 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
184 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
185 All of these platforms are extremely obscure, so say N if unsure.
187 source "drivers/pci/Kconfig"
191 config SUN_OPENPROMFS
192 tristate "Openprom tree appears in /proc/openprom"
194 If you say Y, the OpenPROM device tree will be available as a
195 virtual file system, which you can mount to /proc/openprom by "mount
196 -t openpromfs none /proc/openprom".
198 To compile the /proc/openprom support as a module, choose M here: the
199 module will be called openpromfs.
201 Only choose N if you know in advance that you will not need to modify
202 OpenPROM settings on the running system.
204 source "fs/Kconfig.binfmt"
207 bool "SunOS binary emulation"
209 This allows you to run most SunOS binaries. If you want to do this,
210 say Y here and place appropriate files in /usr/gnemul/sunos. See
211 <http://www.ultralinux.org/faq.html> for more information. If you
212 want to run SunOS binaries on an Ultra you must also say Y to
213 "Kernel support for 32-bit a.out binaries" above.
221 source "drivers/Kconfig"
224 source "drivers/sbus/char/Kconfig"
227 # This one must be before the filesystem configs. -DaveM
229 menu "Unix98 PTY support"
232 bool "Unix98 PTY support"
234 A pseudo terminal (PTY) is a software device consisting of two
235 halves: a master and a slave. The slave device behaves identical to
236 a physical terminal; the master device is used by a process to
237 read data from and write data to the slave, thereby emulating a
238 terminal. Typical programs for the master side are telnet servers
241 Linux has traditionally used the BSD-like names /dev/ptyxx for
242 masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
243 has a number of problems. The GNU C library glibc 2.1 and later,
244 however, supports the Unix98 naming standard: in order to acquire a
245 pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
246 terminal is then made available to the process and the pseudo
247 terminal slave can be accessed as /dev/pts/<number>. What was
248 traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
250 The entries in /dev/pts/ are created on the fly by a virtual
251 file system; therefore, if you say Y here you should say Y to
252 "/dev/pts file system for Unix98 PTYs" as well.
254 If you want to say Y here, you need to have the C library glibc 2.1
255 or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
256 Read the instructions in <file:Documentation/Changes> pertaining to
257 pseudo terminals. It's safe to say N.
259 config UNIX98_PTY_COUNT
260 int "Maximum number of Unix98 PTYs in use (0-2048)"
261 depends on UNIX98_PTYS
264 The maximum number of Unix98 PTYs that can be used at any one time.
265 The default is 256, and should be enough for desktop systems. Server
266 machines which support incoming telnet/rlogin/ssh connections and/or
267 serve several X terminals may want to increase this: every incoming
268 connection and every xterm uses up one PTY.
270 When not in use, each additional set of 256 PTYs occupy
271 approximately 8 KB of kernel memory on 32-bit architectures.
277 source "arch/sparc/Kconfig.debug"
279 source "security/Kconfig"
281 source "crypto/Kconfig"