1 # $Id: config.in,v 1.158 2002/01/24 22:14:44 davem Exp $
2 # For a description of the syntax of this configuration file,
3 # see the Configure script.
6 mainmenu "Linux/UltraSPARC Kernel Configuration"
15 config TIME_INTERPOLATION
23 depends on COMPAT && SYSVIPC
26 menu "General machine setup"
29 tristate "UltraSPARC-III bootbus i2c controller driver"
32 The BBC devices on the UltraSPARC III have two I2C controllers. The
33 first I2C controller connects mainly to configuration PROMs (NVRAM,
34 CPU configuration, DIMM types, etc.). The second I2C controller
35 connects to environmental control devices such as fans and
36 temperature sensors. The second controller also connects to the
37 smartcard reader, if present. Say Y to enable support for these.
40 bool "Virtual terminal" if EMBEDDED
44 If you say Y here, you will get support for terminal devices with
45 display and keyboard devices. These are called "virtual" because you
46 can run several virtual terminals (also called virtual consoles) on
47 one physical terminal. This is rather useful, for example one
48 virtual terminal can collect system messages and warnings, another
49 one can be used for a text-mode user session, and a third could run
50 an X session, all in parallel. Switching between virtual terminals
51 is done with certain key combinations, usually Alt-<function key>.
53 The setterm command ("man setterm") can be used to change the
54 properties (such as colors or beeping) of a virtual terminal. The
55 man page console_codes(4) ("man console_codes") contains the special
56 character sequences that can be used to change those properties
57 directly. The fonts used on virtual terminals can be changed with
58 the setfont ("man setfont") command and the key bindings are defined
59 with the loadkeys ("man loadkeys") command.
61 You need at least one virtual terminal device in order to make use
62 of your keyboard and monitor. Therefore, only people configuring an
63 embedded system would want to say N here in order to save some
64 memory; the only way to log into such a system is then via a serial
65 or network connection.
67 If unsure, say Y, or else you won't be able to do much with your new
68 shiny Linux system :-)
71 bool "Support for console on virtual terminal" if EMBEDDED
75 The system console is the device which receives all kernel messages
76 and warnings and which allows logins in single user mode. If you
77 answer Y here, a virtual terminal (the device used to interact with
78 a physical terminal) can be used as system console. This is the most
79 common mode of operations, so you should say Y here unless you want
80 the kernel messages be output only to a serial port (in which case
81 you should say Y to "Console on serial port", below).
83 If you do say Y here, by default the currently visible virtual
84 terminal (/dev/tty0) will be used as system console. You can change
85 that with a kernel command line option such as "console=tty3" which
86 would use the third virtual terminal as system console. (Try "man
87 bootparam" or see the documentation of your boot loader (lilo or
88 loadlin) about how to pass options to the kernel at boot time.)
97 bool "Symmetric multi-processing support"
99 This enables support for systems with more than one CPU. If you have
100 a system with only one CPU, say N. If you have a system with more than
103 If you say N here, the kernel will run on single and multiprocessor
104 machines, but will use only one CPU of a multiprocessor machine. If
105 you say Y here, the kernel will run on many, but not all,
106 singleprocessor machines. On a singleprocessor machine, the kernel
107 will run faster if you say N here.
109 People using multiprocessor machines who say Y here should also say
110 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
111 Management" code will be disabled if you say Y here.
113 See also the <file:Documentation/smp.txt>,
114 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
115 <http://www.tldp.org/docs.html#howto>.
117 If you don't know what to do here, say N.
120 bool "Preemptible Kernel"
122 This option reduces the latency of the kernel when reacting to
123 real-time or interactive events by allowing a low priority process to
124 be preempted even if it is in kernel mode executing a system call.
125 This allows applications to run more reliably even when the system is
128 Say Y here if you are building a kernel for a desktop, embedded
129 or real-time system. Say N if you are unsure.
132 int "Maximum number of CPUs (2-64)"
137 source "drivers/cpufreq/Kconfig"
139 config CPU_FREQ_TABLE
140 tristate "CPU frequency table helpers"
144 Many CPUFreq drivers use these helpers, so only say N here if
145 the CPUFreq driver of your choice doesn't need these helpers.
150 tristate "UltraSPARC-III CPU Frequency driver"
151 depends on CPU_FREQ_TABLE
153 This adds the CPUFreq driver for UltraSPARC-III processors.
155 For details, take a look at <file:Documentation/cpu-freq>.
160 tristate "UltraSPARC-IIe CPU Frequency driver"
161 depends on CPU_FREQ_TABLE
163 This adds the CPUFreq driver for UltraSPARC-IIe processors.
165 For details, take a look at <file:Documentation/cpu-freq>.
169 # Identify this as a Sparc64 build
174 SPARC is a family of RISC microprocessors designed and marketed by
175 Sun Microsystems, incorporated. This port covers the newer 64-bit
176 UltraSPARC. The UltraLinux project maintains both the SPARC32 and
177 SPARC64 ports; its web page is available at
178 <http://www.ultralinux.org/>.
180 # Global things across all Sun machines.
181 config RWSEM_GENERIC_SPINLOCK
184 config RWSEM_XCHGADD_ALGORITHM
188 config GENERIC_CALIBRATE_DELAY
193 prompt "SPARC64 Huge TLB Page Size"
194 depends on HUGETLB_PAGE
195 default HUGETLB_PAGE_SIZE_4MB
197 config HUGETLB_PAGE_SIZE_4MB
200 config HUGETLB_PAGE_SIZE_512K
203 config HUGETLB_PAGE_SIZE_64K
208 config GENERIC_ISA_DMA
215 Find out whether you have ISA slots on your motherboard. ISA is the
216 name of a bus system, i.e. the way the CPU talks to the other stuff
217 inside your box. Other bus systems are PCI, EISA, MicroChannel
218 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
219 newer boards don't support it. If you have ISA, say Y, otherwise N.
224 Say Y here if you would like support for ISA Plug and Play devices.
225 Some information is in <file:Documentation/isapnp.txt>.
227 To compile this driver as a module, choose M here: the
228 module will be called isapnp.
235 The Extended Industry Standard Architecture (EISA) bus was
236 developed as an open alternative to the IBM MicroChannel bus.
238 The EISA bus provided some of the features of the IBM MicroChannel
239 bus while maintaining backward compatibility with cards made for
240 the older ISA bus. The EISA bus saw limited use between 1988 and
241 1995 when it was made obsolete by the PCI bus.
243 Say Y here if you are building a kernel for an EISA-based machine.
250 MicroChannel Architecture is found in some IBM PS/2 machines and
251 laptops. It is a bus system similar to PCI or ISA. See
252 <file:Documentation/mca.txt> (and especially the web page given
253 there) before attempting to build an MCA bus kernel.
258 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
259 computer. These are credit-card size devices such as network cards,
260 modems or hard drives often used with laptops computers. There are
261 actually two varieties of these cards: the older 16 bit PCMCIA cards
262 and the newer 32 bit CardBus cards. If you want to use CardBus
263 cards, you need to say Y here and also to "CardBus support" below.
265 To use your PC-cards, you will need supporting software from David
266 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
267 for location). Please also read the PCMCIA-HOWTO, available from
268 <http://www.tldp.org/docs.html#howto>.
270 To compile this driver as modules, choose M here: the
271 modules will be called pcmcia_core and ds.
292 Find out whether you have a PCI motherboard. PCI is the name of a
293 bus system, i.e. the way the CPU talks to the other stuff inside
294 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
295 VESA. If you have PCI, say Y, otherwise N.
297 The PCI-HOWTO, available from
298 <http://www.tldp.org/docs.html#howto>, contains valuable
299 information about which PCI hardware does work under Linux and which
311 If you say Y here and create a character special file /dev/rtc with
312 major number 10 and minor number 135 using mknod ("man mknod"), you
313 will get access to the real time clock (or hardware clock) built
316 Every PC has such a clock built in. It can be used to generate
317 signals from as low as 1Hz up to 8192Hz, and can also be used
318 as a 24 hour alarm. It reports status information via the file
319 /proc/driver/rtc and its behaviour is set by various ioctls on
322 If you run Linux on a multiprocessor machine and said Y to
323 "Symmetric Multi Processing" above, you should say Y here to read
324 and set the RTC in an SMP compatible fashion.
326 If you think you have a use for such a device (such as periodic data
327 sampling), then say Y here, and read <file:Documentation/rtc.txt>
330 To compile this driver as a module, choose M here: the
331 module will be called rtc.
333 source "drivers/pci/Kconfig"
335 config SUN_OPENPROMFS
336 tristate "Openprom tree appears in /proc/openprom"
338 If you say Y, the OpenPROM device tree will be available as a
339 virtual file system, which you can mount to /proc/openprom by "mount
340 -t openpromfs none /proc/openprom".
342 To compile the /proc/openprom support as a module, choose M here: the
343 module will be called openpromfs. If unsure, choose M.
345 config SPARC32_COMPAT
346 bool "Kernel support for Linux/Sparc 32bit binary compatibility"
348 This allows you to run 32-bit binaries on your Ultra.
349 Everybody wants this; say Y.
353 depends on SPARC32_COMPAT
358 depends on SPARC32_COMPAT
362 tristate "Kernel support for 32-bit ELF binaries"
363 depends on SPARC32_COMPAT
365 This allows you to run 32-bit Linux/ELF binaries on your Ultra.
366 Everybody wants this; say Y.
369 bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
370 depends on SPARC32_COMPAT
372 This allows you to run 32-bit a.out format binaries on your Ultra.
373 If you want to run SunOS binaries (see SunOS binary emulation below)
374 or other a.out binaries, say Y. If unsure, say N.
376 source "fs/Kconfig.binfmt"
379 bool "SunOS binary emulation"
380 depends on BINFMT_AOUT32
382 This allows you to run most SunOS binaries. If you want to do this,
383 say Y here and place appropriate files in /usr/gnemul/sunos. See
384 <http://www.ultralinux.org/faq.html> for more information. If you
385 want to run SunOS binaries on an Ultra you must also say Y to
386 "Kernel support for 32-bit a.out binaries" above.
389 tristate "Solaris binary emulation (EXPERIMENTAL)"
390 depends on SPARC32_COMPAT && EXPERIMENTAL
392 This is experimental code which will enable you to run (many)
393 Solaris binaries on your SPARC Linux machine.
395 To compile this code as a module, choose M here: the
396 module will be called solaris.
398 source "drivers/parport/Kconfig"
401 tristate "Parallel printer support"
404 If you intend to attach a printer to the parallel port of your Linux
405 box (as opposed to using a serial printer; if the connector at the
406 printer has 9 or 25 holes ["female"], then it's serial), say Y.
407 Also read the Printing-HOWTO, available from
408 <http://www.tldp.org/docs.html#howto>.
410 It is possible to share one parallel port among several devices
411 (e.g. printer and ZIP drive) and it is safe to compile the
412 corresponding drivers into the kernel.
413 To compile this driver as a module, choose M here and read
414 <file:Documentation/parport.txt>. The module will be called lp.
416 If you have several parallel ports, you can specify which ports to
417 use with the "lp" kernel command line option. (Try "man bootparam"
418 or see the documentation of your boot loader (lilo or loadlin) about
419 how to pass options to the kernel at boot time.) The syntax of the
420 "lp" command line option can be found in <file:drivers/char/lp.c>.
422 If you have more than 8 printers, you need to increase the LP_NO
423 macro in lp.c and the PARPORT_MAX macro in parport.h.
426 tristate "SUNW, envctrl support"
429 Kernel support for temperature and fan monitoring on Sun SME
432 To compile this driver as a module, choose M here: the
433 module will be called envctrl.
436 tristate "7-Segment Display support"
439 This is the driver for the 7-segment display and LED present on
440 Sun Microsystems CompactPCI models CP1400 and CP1500.
442 To compile this driver as a module, choose M here: the
443 module will be called display7seg.
445 If you do not have a CompactPCI model CP1400 or CP1500, or
446 another UltraSPARC-IIi-cEngine boardset with a 7-segment display,
447 you should say N to this option.
450 bool "Default bootloader kernel arguments"
453 string "Initial kernel command string"
454 depends on CMDLINE_BOOL
455 default "console=ttyS0,9600 root=/dev/sda1"
457 Say Y here if you want to be able to pass default arguments to
458 the kernel. This will be overridden by the bootloader, if you
459 use one (such as SILO). This is most useful if you want to boot
460 a kernel from TFTP, and want default options to be available
461 with having them passed on the command line.
463 NOTE: This option WILL override the PROM bootargs setting!
467 source "drivers/base/Kconfig"
469 source "drivers/video/Kconfig"
471 source "drivers/serial/Kconfig"
473 source "drivers/sbus/char/Kconfig"
475 source "drivers/mtd/Kconfig"
477 source "drivers/block/Kconfig"
479 source "drivers/ide/Kconfig"
481 source "drivers/scsi/Kconfig"
483 source "drivers/fc4/Kconfig"
485 source "drivers/md/Kconfig"
488 source "drivers/message/fusion/Kconfig"
491 source "drivers/ieee1394/Kconfig"
495 source "drivers/isdn/Kconfig"
497 source "drivers/telephony/Kconfig"
499 # This one must be before the filesystem configs. -DaveM
501 menu "Unix98 PTY support"
504 bool "Unix98 PTY support"
506 A pseudo terminal (PTY) is a software device consisting of two
507 halves: a master and a slave. The slave device behaves identical to
508 a physical terminal; the master device is used by a process to
509 read data from and write data to the slave, thereby emulating a
510 terminal. Typical programs for the master side are telnet servers
513 Linux has traditionally used the BSD-like names /dev/ptyxx for
514 masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
515 has a number of problems. The GNU C library glibc 2.1 and later,
516 however, supports the Unix98 naming standard: in order to acquire a
517 pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
518 terminal is then made available to the process and the pseudo
519 terminal slave can be accessed as /dev/pts/<number>. What was
520 traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
522 The entries in /dev/pts/ are created on the fly by a virtual
523 file system; therefore, if you say Y here you should say Y to
524 "/dev/pts file system for Unix98 PTYs" as well.
526 If you want to say Y here, you need to have the C library glibc 2.1
527 or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
528 Read the instructions in <file:Documentation/Changes> pertaining to
529 pseudo terminals. It's safe to say N.
531 config UNIX98_PTY_COUNT
532 int "Maximum number of Unix98 PTYs in use (0-2048)"
533 depends on UNIX98_PTYS
536 The maximum number of Unix98 PTYs that can be used at any one time.
537 The default is 256, and should be enough for desktop systems. Server
538 machines which support incoming telnet/rlogin/ssh connections and/or
539 serve several X terminals may want to increase this: every incoming
540 connection and every xterm uses up one PTY.
542 When not in use, each additional set of 256 PTYs occupy
543 approximately 8 KB of kernel memory on 32-bit architectures.
547 menu "XFree86 DRI support"
550 bool "Direct Rendering Manager (XFree86 DRI support)"
552 Kernel-level support for the Direct Rendering Infrastructure (DRI)
553 introduced in XFree86 4.0. If you say Y here, you need to select
554 the module that's right for your graphics card from the list below.
555 These modules provide support for synchronization, security, and
556 DMA transfers. Please see <http://dri.sourceforge.net/> for more
557 details. You should also select and configure AGP
558 (/dev/agpgart) support.
561 tristate "Creator/Creator3D"
562 depends on DRM && BROKEN
564 Choose this option if you have one of Sun's Creator3D-based graphics
565 and frame buffer cards. Product page at
566 <http://www.sun.com/desktop/products/Graphics/creator3d.html>.
569 tristate "3dfx Banshee/Voodoo3+"
572 Choose this option if you have a 3dfx Banshee or Voodoo3 (or later),
573 graphics card. If M is selected, the module will be called tdfx.
576 tristate "ATI Rage 128"
579 Choose this option if you have an ATI Rage 128 graphics card. If M
580 is selected, the module will be called r128. AGP support for
581 this card is strongly suggested (unless you have a PCI version).
585 source "drivers/input/Kconfig"
587 source "drivers/i2c/Kconfig"
591 source "drivers/media/Kconfig"
593 source "sound/Kconfig"
595 source "drivers/usb/Kconfig"
597 source "drivers/infiniband/Kconfig"
599 source "drivers/char/watchdog/Kconfig"
601 source "arch/sparc64/oprofile/Kconfig"
603 source "arch/sparc64/Kconfig.debug"
605 source "kernel/vserver/Kconfig"
607 source "security/Kconfig"
609 source "crypto/Kconfig"