1 # For a description of the syntax of this configuration file,
2 # see Documentation/kbuild/kconfig-language.txt.
5 mainmenu "Linux/SPARC Kernel Configuration"
19 config GENERIC_ISA_DMA
26 Generic GPIO API support
28 config ARCH_NO_VIRT_TO_BUS
40 menu "General machine setup"
43 bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
45 This enables support for systems with more than one CPU. If you have
46 a system with only one CPU, say N. If you have a system with more
49 If you say N here, the kernel will run on single and multiprocessor
50 machines, but will use only one CPU of a multiprocessor machine. If
51 you say Y here, the kernel will run on many, but not all,
52 singleprocessor machines. On a singleprocessor machine, the kernel
53 will run faster if you say N here.
55 People using multiprocessor machines who say Y here should also say
56 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
57 Management" code will be disabled if you say Y here.
59 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
60 available at <http://www.tldp.org/docs.html#howto>.
62 If you don't know what to do here, say N.
65 int "Maximum number of CPUs (2-32)"
75 select HAVE_ARCH_KGDB if !SMP
76 select HAVE_ARCH_TRACEHOOK
77 select ARCH_WANT_OPTIONAL_GPIOLIB
79 # Identify this as a Sparc32 build
84 SPARC is a family of RISC microprocessors designed and marketed by
85 Sun Microsystems, incorporated. They are very widely found in Sun
86 workstations and clones. This port covers the original 32-bit SPARC;
87 it is old and stable and usually considered one of the "big three"
88 along with the Intel and Alpha ports. The UltraLinux project
89 maintains both the SPARC32 and SPARC64 ports; its web page is
90 available at <http://www.ultralinux.org/>.
92 # Global things across all Sun machines.
96 ISA is found on Espresso only and is not supported currently.
102 EISA is not supported.
108 MCA is not supported.
114 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
115 computer. These are credit-card size devices such as network cards,
116 modems or hard drives often used with laptops computers. There are
117 actually two varieties of these cards: the older 16 bit PCMCIA cards
118 and the newer 32 bit CardBus cards. If you want to use CardBus
119 cards, you need to say Y here and also to "CardBus support" below.
121 To use your PC-cards, you will need supporting software from David
122 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
123 for location). Please also read the PCMCIA-HOWTO, available from
124 <http://www.tldp.org/docs.html#howto>.
126 To compile this driver as modules, choose M here: the
127 modules will be called pcmcia_core and ds.
137 config SERIAL_CONSOLE
141 If you say Y here, it will be possible to use a serial port as the
142 system console (the system console is the device which receives all
143 kernel messages and warnings and which allows logins in single user
144 mode). This could be useful if some terminal or printer is connected
147 Even if you say Y here, the currently visible virtual console
148 (/dev/tty0) will still be used as the system console by default, but
149 you can alter that using a kernel command line option such as
150 "console=ttyS1". (Try "man bootparam" or see the documentation of
151 your boot loader (silo) about how to pass options to the kernel at
154 If you don't have a graphics card installed and you say Y here, the
155 kernel will automatically use the first serial line, /dev/ttyS0, as
168 config RWSEM_GENERIC_SPINLOCK
172 config RWSEM_XCHGADD_ALGORITHM
175 config GENERIC_FIND_NEXT_BIT
179 config GENERIC_HWEIGHT
183 config GENERIC_CALIBRATE_DELAY
187 config ARCH_MAY_HAVE_PC_FDC
191 config ARCH_HAS_ILOG2_U32
195 config ARCH_HAS_ILOG2_U64
199 config EMULATED_CMPXCHG
203 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
204 is emulated, and therefore it is not completely atomic.
210 Enable power management and CPU standby features on supported
214 bool "Support for SUN4 machines (disables SUN4[CDM] support)"
218 Say Y here if, and only if, your machine is a sun4. Note that
219 a kernel compiled with this option will run only on sun4.
220 (And the current version will probably work only on sun4/330.)
225 bool "Support for PCI and PS/2 keyboard/mouse"
227 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
228 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
229 All of these platforms are extremely obscure, so say N if unsure.
234 source "drivers/pci/Kconfig"
238 config SUN_OPENPROMFS
239 tristate "Openprom tree appears in /proc/openprom"
241 If you say Y, the OpenPROM device tree will be available as a
242 virtual file system, which you can mount to /proc/openprom by "mount
243 -t openpromfs none /proc/openprom".
245 To compile the /proc/openprom support as a module, choose M here: the
246 module will be called openpromfs.
248 Only choose N if you know in advance that you will not need to modify
249 OpenPROM settings on the running system.
252 tristate "Sun4m LED driver"
254 This driver toggles the front-panel LED on sun4m systems
255 in a user-specifiable manner. Its state can be probed
256 by reading /proc/led and its blinking mode can be changed
257 via writes to /proc/led
259 source "fs/Kconfig.binfmt"
267 source "drivers/Kconfig"
270 source "drivers/sbus/char/Kconfig"
273 # This one must be before the filesystem configs. -DaveM
275 menu "Unix98 PTY support"
278 bool "Unix98 PTY support"
280 A pseudo terminal (PTY) is a software device consisting of two
281 halves: a master and a slave. The slave device behaves identical to
282 a physical terminal; the master device is used by a process to
283 read data from and write data to the slave, thereby emulating a
284 terminal. Typical programs for the master side are telnet servers
287 Linux has traditionally used the BSD-like names /dev/ptyxx for
288 masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
289 has a number of problems. The GNU C library glibc 2.1 and later,
290 however, supports the Unix98 naming standard: in order to acquire a
291 pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
292 terminal is then made available to the process and the pseudo
293 terminal slave can be accessed as /dev/pts/<number>. What was
294 traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
296 The entries in /dev/pts/ are created on the fly by a virtual
297 file system; therefore, if you say Y here you should say Y to
298 "/dev/pts file system for Unix98 PTYs" as well.
300 If you want to say Y here, you need to have the C library glibc 2.1
301 or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
302 Read the instructions in <file:Documentation/Changes> pertaining to
303 pseudo terminals. It's safe to say N.
309 source "arch/sparc/Kconfig.debug"
311 source "security/Kconfig"
313 source "crypto/Kconfig"