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"
18 tristate "UltraSPARC-III bootbus i2c controller driver"
20 The BBC devices on the UltraSPARC III have two I2C controllers. The
21 first I2C controller connects mainly to configuration PROMs (NVRAM,
22 CPU configuration, DIMM types, etc.). The second I2C controller
23 connects to environmental control devices such as fans and
24 temperature sensors. The second controller also connects to the
25 smartcard reader, if present. Say Y to enable support for these.
31 If you say Y here, you will get support for terminal devices with
32 display and keyboard devices. These are called "virtual" because you
33 can run several virtual terminals (also called virtual consoles) on
34 one physical terminal. This is rather useful, for example one
35 virtual terminal can collect system messages and warnings, another
36 one can be used for a text-mode user session, and a third could run
37 an X session, all in parallel. Switching between virtual terminals
38 is done with certain key combinations, usually Alt-<function key>.
40 The setterm command ("man setterm") can be used to change the
41 properties (such as colors or beeping) of a virtual terminal. The
42 man page console_codes(4) ("man console_codes") contains the special
43 character sequences that can be used to change those properties
44 directly. The fonts used on virtual terminals can be changed with
45 the setfont ("man setfont") command and the key bindings are defined
46 with the loadkeys ("man loadkeys") command.
48 You need at least one virtual terminal device in order to make use
49 of your keyboard and monitor. Therefore, only people configuring an
50 embedded system would want to say N here in order to save some
51 memory; the only way to log into such a system is then via a serial
52 or network connection.
54 If unsure, say Y, or else you won't be able to do much with your new
55 shiny Linux system :-)
61 The system console is the device which receives all kernel messages
62 and warnings and which allows logins in single user mode. If you
63 answer Y here, a virtual terminal (the device used to interact with
64 a physical terminal) can be used as system console. This is the most
65 common mode of operations, so you should say Y here unless you want
66 the kernel messages be output only to a serial port (in which case
67 you should say Y to "Console on serial port", below).
69 If you do say Y here, by default the currently visible virtual
70 terminal (/dev/tty0) will be used as system console. You can change
71 that with a kernel command line option such as "console=tty3" which
72 would use the third virtual terminal as system console. (Try "man
73 bootparam" or see the documentation of your boot loader (lilo or
74 loadlin) about how to pass options to the kernel at boot time.)
83 bool "SPARC64 Huge TLB Page Support"
85 This enables support for huge pages. User space applications
86 can make use of this support with the sys_alloc_hugepages and
87 sys_free_hugepages system calls. If your applications are
88 huge page aware, then say Y here.
93 bool "Symmetric multi-processing support"
95 This enables support for systems with more than one CPU. If you have
96 a system with only one CPU, like most personal computers, say N. If
97 you have a system with more than one CPU, say Y.
99 If you say N here, the kernel will run on single and multiprocessor
100 machines, but will use only one CPU of a multiprocessor machine. If
101 you say Y here, the kernel will run on many, but not all,
102 singleprocessor machines. On a singleprocessor machine, the kernel
103 will run faster if you say N here.
105 Note that if you say Y here and choose architecture "586" or
106 "Pentium" under "Processor family", the kernel will not work on 486
107 architectures. Similarly, multiprocessor kernels for the "PPro"
108 architecture may not work on all Pentium based boards.
110 People using multiprocessor machines who say Y here should also say
111 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
112 Management" code will be disabled if you say Y here.
114 See also the <file:Documentation/smp.tex>,
115 <file:Documentation/smp.txt>, <file:Documentation/i386/IO-APIC.txt>,
116 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
117 <http://www.tldp.org/docs.html#howto>.
119 If you don't know what to do here, say N.
122 bool "Preemptible Kernel"
124 This option reduces the latency of the kernel when reacting to
125 real-time or interactive events by allowing a low priority process to
126 be preempted even if it is in kernel mode executing a system call.
127 This allows applications to run more reliably even when the system is
130 Say Y here if you are building a kernel for a desktop, embedded
131 or real-time system. Say N if you are unsure.
134 int "Maximum number of CPUs (2-64)"
139 bool "CPU Frequency scaling"
141 Clock scaling allows you to change the clock speed of CPUs on the
142 fly. Currently there are only sparc64 drivers for UltraSPARC-III
143 and UltraSPARC-IIe processors.
145 For details, take a look at linux/Documentation/cpufreq.
149 config CPU_FREQ_TABLE
150 tristate "CPU frequency table helpers"
154 Many CPUFreq drivers use these helpers, so only say N here if
155 the CPUFreq driver of your choice doesn't need these helpers.
160 tristate "UltraSPARC-III CPU Frequency driver"
161 depends on CPU_FREQ_TABLE
163 This adds the CPUFreq driver for UltraSPARC-III processors.
165 For details, take a look at linux/Documentation/cpufreq.
170 tristate "UltraSPARC-IIe CPU Frequency driver"
171 depends on CPU_FREQ_TABLE
173 This adds the CPUFreq driver for UltraSPARC-IIe processors.
175 For details, take a look at linux/Documentation/cpufreq.
179 source "drivers/cpufreq/Kconfig"
181 # Identify this as a Sparc64 build
186 SPARC is a family of RISC microprocessors designed and marketed by
187 Sun Microsystems, incorporated. This port covers the newer 64-bit
188 UltraSPARC. The UltraLinux project maintains both the SPARC32 and
189 SPARC64 ports; its web page is available at
190 <http://www.ultralinux.org/>.
193 bool "Support for hot-pluggable devices"
195 Say Y here if you want to plug devices into your computer while
196 the system is running, and be able to use them quickly. In many
197 cases, the devices can likewise be unplugged at any time too.
199 One well known example of this is PCMCIA- or PC-cards, credit-card
200 size devices such as network cards, modems or hard drives which are
201 plugged into slots found on all modern laptop computers. Another
202 example, used on modern desktops as well as laptops, is USB.
204 Enable HOTPLUG and KMOD, and build a modular kernel. Get agent
205 software (at <http://linux-hotplug.sourceforge.net/>) and install it.
206 Then your kernel will automatically call out to a user mode "policy
207 agent" (/sbin/hotplug) to load modules and set up software needed
208 to use devices as you hotplug them.
210 # Global things across all Sun machines.
215 config RWSEM_GENERIC_SPINLOCK
218 config RWSEM_XCHGADD_ALGORITHM
222 config GENERIC_ISA_DMA
229 Find out whether you have ISA slots on your motherboard. ISA is the
230 name of a bus system, i.e. the way the CPU talks to the other stuff
231 inside your box. Other bus systems are PCI, EISA, MicroChannel
232 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
233 newer boards don't support it. If you have ISA, say Y, otherwise N.
238 Say Y here if you would like support for ISA Plug and Play devices.
239 Some information is in <file:Documentation/isapnp.txt>.
241 This support is also available as a module called isapnp ( =
242 code which can be inserted in and removed from the running kernel
243 whenever you want). If you want to compile it as a module, say M
244 here and read <file:Documentation/modules.txt>.
251 The Extended Industry Standard Architecture (EISA) bus was
252 developed as an open alternative to the IBM MicroChannel bus.
254 The EISA bus provided some of the features of the IBM MicroChannel
255 bus while maintaining backward compatibility with cards made for
256 the older ISA bus. The EISA bus saw limited use between 1988 and
257 1995 when it was made obsolete by the PCI bus.
259 Say Y here if you are building a kernel for an EISA-based machine.
266 MicroChannel Architecture is found in some IBM PS/2 machines and
267 laptops. It is a bus system similar to PCI or ISA. See
268 <file:Documentation/mca.txt> (and especially the web page given
269 there) before attempting to build an MCA bus kernel.
274 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
275 computer. These are credit-card size devices such as network cards,
276 modems or hard drives often used with laptops computers. There are
277 actually two varieties of these cards: the older 16 bit PCMCIA cards
278 and the newer 32 bit CardBus cards. If you want to use CardBus
279 cards, you need to say Y here and also to "CardBus support" below.
281 To use your PC-cards, you will need supporting software from David
282 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
283 for location). Please also read the PCMCIA-HOWTO, available from
284 <http://www.tldp.org/docs.html#howto>.
286 This driver is also available as a module ( = code which can be
287 inserted in and removed from the running kernel whenever you want).
288 When compiled this way, there will be modules called pcmcia_core
289 and ds. If you want to compile it as a module, say M here and
290 read <file:Documentation/modules.txt>.
311 Find out whether you have a PCI motherboard. PCI is the name of a
312 bus system, i.e. the way the CPU talks to the other stuff inside
313 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
314 VESA. If you have PCI, say Y, otherwise N.
316 The PCI-HOWTO, available from
317 <http://www.tldp.org/docs.html#howto>, contains valuable
318 information about which PCI hardware does work under Linux and which
330 If you say Y here and create a character special file /dev/rtc with
331 major number 10 and minor number 135 using mknod ("man mknod"), you
332 will get access to the real time clock (or hardware clock) built
335 Every PC has such a clock built in. It can be used to generate
336 signals from as low as 1Hz up to 8192Hz, and can also be used
337 as a 24 hour alarm. It reports status information via the file
338 /proc/driver/rtc and its behaviour is set by various ioctls on
341 If you run Linux on a multiprocessor machine and said Y to
342 "Symmetric Multi Processing" above, you should say Y here to read
343 and set the RTC in an SMP compatible fashion.
345 If you think you have a use for such a device (such as periodic data
346 sampling), then say Y here, and read <file:Documentation/rtc.txt>
349 This driver is also available as a module ( = code which can be
350 inserted in and removed from the running kernel whenever you want).
351 The module is called rtc. If you want to compile it as a module,
352 say M here and read <file:Documentation/modules.txt>.
354 source "drivers/pci/Kconfig"
356 config SUN_OPENPROMFS
357 tristate "Openprom tree appears in /proc/openprom"
359 If you say Y, the OpenPROM device tree will be available as a
360 virtual file system, which you can mount to /proc/openprom by "mount
361 -t openpromfs none /proc/openprom".
363 If you want to compile the /proc/openprom support as a module ( =
364 code which can be inserted in and removed from the running kernel
365 whenever you want), say M here and read
366 <file:Documentation/modules.txt>.
367 The module will be called openpromfs. If unsure, say M.
374 If you enabled support for /proc file system then the file
375 /proc/kcore will contain the kernel core image. This can be used
378 $ cd /usr/src/linux ; gdb vmlinux /proc/kcore
380 You have two choices here: ELF and A.OUT. Selecting ELF will make
381 /proc/kcore appear in ELF core format as defined by the Executable
382 and Linking Format specification. Selecting A.OUT will choose the
383 old "a.out" format which may be necessary for some old versions
384 of binutils or on some architectures.
386 This is especially useful if you have compiled the kernel with the
387 "-g" option to preserve debugging information. It is mainly used
388 for examining kernel data structures on the live kernel so if you
389 don't understand what this means or are not a kernel hacker, just
390 leave it at its default value ELF.
392 config SPARC32_COMPAT
393 bool "Kernel support for Linux/Sparc 32bit binary compatibility"
395 This allows you to run 32-bit binaries on your Ultra.
396 Everybody wants this; say Y.
400 depends on SPARC32_COMPAT
404 tristate "Kernel support for 32-bit ELF binaries"
405 depends on SPARC32_COMPAT
407 This allows you to run 32-bit Linux/ELF binaries on your Ultra.
408 Everybody wants this; say Y.
411 bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
412 depends on SPARC32_COMPAT
414 This allows you to run 32-bit a.out format binaries on your Ultra.
415 If you want to run SunOS binaries (see SunOS binary emulation below)
416 or other a.out binaries, say Y. If unsure, say N.
418 source "fs/Kconfig.binfmt"
421 bool "SunOS binary emulation"
423 This allows you to run most SunOS binaries. If you want to do this,
424 say Y here and place appropriate files in /usr/gnemul/sunos. See
425 <http://www.ultralinux.org/faq.html> for more information. If you
426 want to run SunOS binaries on an Ultra you must also say Y to
427 "Kernel support for 32-bit a.out binaries" above.
430 tristate "Solaris binary emulation (EXPERIMENTAL)"
431 depends on EXPERIMENTAL
433 This is experimental code which will enable you to run (many)
434 Solaris binaries on your SPARC Linux machine.
436 This code is also available as a module ( = code which can be
437 inserted in and removed from the running kernel whenever you want).
438 The module will be called solaris. If you want to compile it as a
439 module, say M here and read <file:Documentation/modules.txt>.
441 source "drivers/parport/Kconfig"
444 tristate "Parallel printer support"
447 If you intend to attach a printer to the parallel port of your Linux
448 box (as opposed to using a serial printer; if the connector at the
449 printer has 9 or 25 holes ["female"], then it's serial), say Y.
450 Also read the Printing-HOWTO, available from
451 <http://www.tldp.org/docs.html#howto>.
453 It is possible to share one parallel port among several devices
454 (e.g. printer and ZIP drive) and it is safe to compile the
455 corresponding drivers into the kernel. If you want to compile this
456 driver as a module however ( = code which can be inserted in and
457 removed from the running kernel whenever you want), say M here and
458 read <file:Documentation/modules.txt> and
459 <file:Documentation/parport.txt>. The module will be called lp.
461 If you have several parallel ports, you can specify which ports to
462 use with the "lp" kernel command line option. (Try "man bootparam"
463 or see the documentation of your boot loader (lilo or loadlin) about
464 how to pass options to the kernel at boot time.) The syntax of the
465 "lp" command line option can be found in <file:drivers/char/lp.c>.
467 If you have more than 8 printers, you need to increase the LP_NO
468 macro in lp.c and the PARPORT_MAX macro in parport.h.
471 tristate "SUNW, envctrl support"
474 Kernel support for temperature and fan monitoring on Sun SME
477 This code is also available as a module ( = code which can be
478 inserted in and removed from the running kernel whenever you want).
479 The module will be called envctrl. If you want to compile it as a
480 module, say M here and read <file:Documentation/modules.txt>.
483 tristate "7-Segment Display support"
486 This is the driver for the 7-segment display and LED present on
487 Sun Microsystems CompactPCI models CP1400 and CP1500.
489 This driver is also available as a module ( = code which can be
490 inserted in and removed from the running kernel whenever you want).
491 The module will be called display7seg. If you want to compile it
492 as a module, say M here and read <file:Documentation/modules.txt>.
494 If you do not have a CompactPCI model CP1400 or CP1500, or
495 another UltraSPARC-IIi-cEngine boardset with a 7-segment display,
496 you should say N to this option.
498 config WATCHDOG_CP1XXX
499 tristate "CP1XXX Hardware Watchdog support"
502 This is the driver for the hardware watchdog timers present on
503 Sun Microsystems CompactPCI models CP1400 and CP1500.
505 This driver is also available as a module ( = code which can be
506 inserted in and removed from the running kernel whenever you want).
507 The module will be called cpwatchdog. If you want to compile it
508 as a module, say M here and read <file:Documentation/modules.txt>.
510 If you do not have a CompactPCI model CP1400 or CP1500, or
511 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
512 you should say N to this option.
515 tristate "RIO Hardware Watchdog support"
518 Say Y here to support the hardware watchdog capability on Sun RIO
519 machines. The watchdog timeout period is normally one minute but
520 can be changed with a boot-time parameter.
524 source "drivers/base/Kconfig"
526 source "drivers/video/Kconfig"
528 source "drivers/serial/Kconfig"
530 source "drivers/sbus/char/Kconfig"
532 source "drivers/mtd/Kconfig"
538 bool "Normal floppy disk support"
540 If you want to use the floppy disk drive(s) of your PC under Linux,
541 say Y. Information about this driver, especially important for IBM
542 Thinkpad users, is contained in <file:Documentation/floppy.txt>.
543 That file also contains the location of the Floppy driver FAQ as
544 well as location of the fdutils package used to configure additional
545 parameters of the driver at run time.
547 This driver is also available as a module ( = code which can be
548 inserted in and removed from the running kernel whenever you want).
549 The module will be called floppy. If you want to compile it as a
550 module, say M here and read <file:Documentation/modules.txt>.
553 tristate "Loopback device support"
555 Saying Y here will allow you to use a regular file as a block
556 device; you can then create a file system on that block device and
557 mount it just as you would mount other block devices such as hard
558 drive partitions, CD-ROM drives or floppy drives. The loop devices
559 are block special device files with major number 7 and typically
560 called /dev/loop0, /dev/loop1 etc.
562 This is useful if you want to check an ISO 9660 file system before
563 burning the CD, or if you want to use floppy images without first
564 writing them to floppy. Furthermore, some Linux distributions avoid
565 the need for a dedicated Linux partition by keeping their complete
566 root file system inside a DOS FAT file using this loop device
569 The loop device driver can also be used to "hide" a file system in a
570 disk partition, floppy, or regular file, either using encryption
571 (scrambling the data) or steganography (hiding the data in the low
572 bits of, say, a sound file). This is also safe if the file resides
573 on a remote file server. If you want to do this, you will first have
574 to acquire and install a kernel patch from
575 <ftp://ftp.kerneli.org/pub/kerneli/>, and then you need to
576 say Y to this option.
578 Note that alternative ways to use encrypted file systems are
579 provided by the cfs package, which can be gotten from
580 <ftp://ftp.kerneli.org/pub/kerneli/net-source/>, and the newer tcfs
581 package, available at <http://tcfs.dia.unisa.it/>. You do not need
582 to say Y here if you want to use one of these. However, using cfs
583 requires saying Y to "NFS file system support" below while using
584 tcfs requires applying a kernel patch. An alternative steganography
585 solution is provided by StegFS, also available from
586 <ftp://ftp.kerneli.org/pub/kerneli/net-source/>.
588 To use the loop device, you need the losetup utility and a recent
589 version of the mount program, both contained in the util-linux
590 package. The location and current version number of util-linux is
591 contained in the file <file:Documentation/Changes>.
593 Note that this loop device has nothing to do with the loopback
594 device used for network connections from the machine to itself.
596 If you want to compile this driver as a module ( = code which can be
597 inserted in and removed from the running kernel whenever you want),
598 say M here and read <file:Documentation/modules.txt>. The module
601 Most users will answer N here.
604 tristate "Network block device support"
607 Saying Y here will allow your computer to be a client for network
608 block devices, i.e. it will be able to use block devices exported by
609 servers (mount file systems on them etc.). Communication between
610 client and server works over TCP/IP networking, but to the client
611 program this is hidden: it looks like a regular local file access to
612 a block device special file such as /dev/nd0.
614 Network block devices also allows you to run a block-device in
615 userland (making server and client physically the same computer,
616 communicating using the loopback network device).
618 Read <file:Documentation/nbd.txt> for more information, especially
619 about where to find the server code, which runs in user space and
620 does not need special kernel support.
622 Note that this has nothing to do with the network file systems NFS
623 or Coda; you can say N here even if you intend to use NFS or Coda.
625 If you want to compile this driver as a module ( = code which can be
626 inserted in and removed from the running kernel whenever you want),
627 say M here and read <file:Documentation/modules.txt>. The module
632 source "drivers/md/Kconfig"
635 tristate "RAM disk support"
637 Saying Y here will allow you to use a portion of your RAM memory as
638 a block device, so that you can make file systems on it, read and
639 write to it and do all the other things that you can do with normal
640 block devices (such as hard drives). It is usually used to load and
641 store a copy of a minimal root file system off of a floppy into RAM
642 during the initial install of Linux.
644 Note that the kernel command line option "ramdisk=XX" is now
645 obsolete. For details, read <file:Documentation/ramdisk.txt>.
647 If you want to compile this as a module ( = code which can be
648 inserted in and removed from the running kernel whenever you want),
649 say M and read <file:Documentation/modules.txt>. The module will be
652 Most normal users won't need the RAM disk functionality, and can
655 config BLK_DEV_RAM_SIZE
656 int "Default RAM disk size"
657 depends on BLK_DEV_RAM
660 The default value is 4096. Only change this if you know what are
661 you doing. If you are using IBM S/390, then set this to 8192.
663 config BLK_DEV_INITRD
664 bool "Initial RAM disk (initrd) support"
665 depends on BLK_DEV_RAM=y
667 The initial RAM disk is a RAM disk that is loaded by the boot loader
668 (loadlin or lilo) and that is mounted as root before the normal boot
669 procedure. It is typically used to load modules needed to mount the
670 "real" root file system, etc. See <file:Documentation/initrd.txt>
676 source "drivers/ide/Kconfig"
682 tristate "SCSI support"
684 If you want to use a SCSI hard disk, SCSI tape drive, SCSI CD-ROM or
685 any other SCSI device under Linux, say Y and make sure that you know
686 the name of your SCSI host adapter (the card inside your computer
687 that "speaks" the SCSI protocol, also called SCSI controller),
688 because you will be asked for it.
690 You also need to say Y here if you want support for the parallel
691 port version of the 100 MB IOMEGA ZIP drive.
693 This driver is also available as a module ( = code which can be
694 inserted in and removed from the running kernel whenever you want).
695 The module will be called scsi_mod. If you want to compile it as
696 a module, say M here and read <file:Documentation/modules.txt> and
697 <file:Documentation/scsi/scsi.txt>. However, do not compile this as a
698 module if your root file system (the one containing the directory /)
699 is located on a SCSI device.
701 source "drivers/scsi/Kconfig"
705 source "drivers/fc4/Kconfig"
708 source "drivers/message/fusion/Kconfig"
711 source "drivers/ieee1394/Kconfig"
715 source "net/ax25/Kconfig"
717 source "net/irda/Kconfig"
719 source "drivers/isdn/Kconfig"
721 source "drivers/telephony/Kconfig"
723 # This one must be before the filesystem configs. -DaveM
725 menu "Unix 98 PTY support"
728 bool "Unix98 PTY support"
730 A pseudo terminal (PTY) is a software device consisting of two
731 halves: a master and a slave. The slave device behaves identical to
732 a physical terminal; the master device is used by a process to
733 read data from and write data to the slave, thereby emulating a
734 terminal. Typical programs for the master side are telnet servers
737 Linux has traditionally used the BSD-like names /dev/ptyxx for
738 masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
739 has a number of problems. The GNU C library glibc 2.1 and later,
740 however, supports the Unix98 naming standard: in order to acquire a
741 pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
742 terminal is then made available to the process and the pseudo
743 terminal slave can be accessed as /dev/pts/<number>. What was
744 traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
746 The entries in /dev/pts/ are created on the fly by a virtual
747 file system; therefore, if you say Y here you should say Y to
748 "/dev/pts file system for Unix98 PTYs" as well.
750 If you want to say Y here, you need to have the C library glibc 2.1
751 or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
752 Read the instructions in <file:Documentation/Changes> pertaining to
753 pseudo terminals. It's safe to say N.
755 config UNIX98_PTY_COUNT
756 int "Maximum number of Unix98 PTYs in use (0-2048)"
757 depends on UNIX98_PTYS
760 The maximum number of Unix98 PTYs that can be used at any one time.
761 The default is 256, and should be enough for desktop systems. Server
762 machines which support incoming telnet/rlogin/ssh connections and/or
763 serve several X terminals may want to increase this: every incoming
764 connection and every xterm uses up one PTY.
766 When not in use, each additional set of 256 PTYs occupy
767 approximately 8 KB of kernel memory on 32-bit architectures.
772 menu "Video For Linux"
775 tristate "Video For Linux"
777 Support for audio/video capture and overlay devices and FM radio
778 cards. The exact capabilities of each device vary. User tools for
779 this are available from
780 <ftp://ftp.uk.linux.org/pub/linux/video4linux/>.
782 If you are interested in writing a driver for such an audio/video
783 device or user software interacting with such a driver, please read
784 the file <file:Documentation/video4linux/API.html>.
786 This driver is also available as a module called videodev ( = code
787 which can be inserted in and removed from the running kernel
788 whenever you want). If you want to compile it as a module, say M
789 here and read <file:Documentation/modules.txt>.
792 tristate "BT848 Video For Linux"
793 depends on PCI && VIDEO_DEV
795 Support for BT848 based frame grabber/overlay boards. This includes
796 the Miro, Hauppauge and STB boards. Please read the material in
797 <file:Documentation/video4linux/bttv> for more information.
799 If you say Y or M here, you need to say Y or M to "I2C support" and
800 "I2C bit-banging interfaces" in the character device section.
802 This driver is available as a module called bttv ( = code
803 which can be inserted in and removed from the running kernel
804 whenever you want). If you want to compile it as a module, say M
805 here and read <file:Documentation/modules.txt>.
810 menu "XFree86 DRI support"
813 bool "Direct Rendering Manager (XFree86 DRI support)"
815 Kernel-level support for the Direct Rendering Infrastructure (DRI)
816 introduced in XFree86 4.0. If you say Y here, you need to select
817 the module that's right for your graphics card from the list below.
818 These modules provide support for synchronization, security, and
819 DMA transfers. Please see <http://dri.sourceforge.net/> for more
820 details. You should also select and configure AGP
821 (/dev/agpgart) support.
824 tristate "Creator/Creator3D"
827 Choose this option if you have one of Sun's Creator3D-based graphics
828 and frame buffer cards. Product page at
829 <http://www.sun.com/desktop/products/Graphics/creator3d.html>.
832 tristate "3dfx Banshee/Voodoo3+"
835 Choose this option if you have a 3dfx Banshee or Voodoo3 (or later),
836 graphics card. If M is selected, the module will be called tdfx.
839 tristate "ATI Rage 128"
842 Choose this option if you have an ATI Rage 128 graphics card. If M
843 is selected, the module will be called r128. AGP support for
844 this card is strongly suggested (unless you have a PCI version).
848 source "drivers/input/Kconfig"
856 tristate "Sound card support"
858 If you have a sound card in your computer, i.e. if it can say more
859 than an occasional beep, say Y. Be sure to have all the information
860 about your sound card and its configuration down (I/O port,
861 interrupt and DMA channel), because you will be asked for it.
863 You want to read the Sound-HOWTO, available from
864 <http://www.tldp.org/docs.html#howto>. General information about
865 the modular sound system is contained in the files
866 <file:Documentation/sound/Introduction>. The file
867 <file:Documentation/sound/README.OSS> contains some slightly
868 outdated but still useful information as well.
870 If you have a PnP sound card and you want to configure it at boot
871 time using the ISA PnP tools (read
872 <http://www.roestock.demon.co.uk/isapnptools/>), then you need to
873 compile the sound card support as a module ( = code which can be
874 inserted in and removed from the running kernel whenever you want)
875 and load that module after the PnP configuration is finished. To do
876 this, say M here and read <file:Documentation/modules.txt> as well
877 as <file:Documentation/sound/README.modules>; the module will be
880 I'm told that even without a sound card, you can make your computer
881 say more than an occasional beep, by programming the PC speaker.
882 Kernel patches and supporting utilities to do that are in the pcsp
883 package, available at <ftp://ftp.infradead.org/pub/pcsp/>.
885 source "sound/Kconfig"
889 source "drivers/usb/Kconfig"
891 source "net/bluetooth/Kconfig"
897 tristate "Software watchdog"
899 A software monitoring watchdog. This will fail to reboot your system
900 from some situations that the hardware watchdog will recover
901 from. Equally it's a lot cheaper to install.
903 This driver is also available as a module ( = code which can be
904 inserted in and removed from the running kernel whenever you want).
905 If you want to compile it as a module, say M here and read
906 <file:Documentation/modules.txt>. The module will be called
911 source "arch/sparc64/oprofile/Kconfig"
913 menu "Kernel hacking"
916 bool "Kernel debugging"
918 Say Y here if you are developing drivers or trying to debug and
919 identify kernel problems.
922 bool "Debug memory allocations"
923 depends on DEBUG_KERNEL
925 Say Y here to have the kernel do limited verification on memory
926 allocation as well as poisoning memory on free to catch use of freed
930 bool "Magic SysRq key"
931 depends on DEBUG_KERNEL
933 If you say Y here, you will have some control over the system even
934 if the system crashes for example during kernel debugging (e.g., you
935 will be able to flush the buffer cache to disk, reboot the system
936 immediately or dump some status information). This is accomplished
937 by pressing various keys while holding SysRq (Alt+PrintScreen). It
938 also works on a serial console (on PC hardware at least), if you
939 send a BREAK and then within 5 seconds a command keypress. The
940 keys are documented in <file:Documentation/sysrq.txt>. Don't say Y
941 unless you really know what this hack does.
943 config DEBUG_SPINLOCK
944 bool "Spinlock debugging"
945 depends on DEBUG_KERNEL
947 Say Y here and build SMP to catch missing spinlock initialization
948 and certain other kinds of spinlock errors commonly made. This is
949 best used in conjunction with the NMI watchdog so that spinlock
950 deadlocks are also debuggable.
952 config DEBUG_SPINLOCK_SLEEP
953 bool "Sleep-inside-spinlock checking"
955 If you say Y here, various routines which may sleep will become very
956 noisy if they are called with a spinlock held.
958 config DEBUG_BUGVERBOSE
959 bool "Verbose BUG() reporting (adds 70K)"
960 depends on DEBUG_KERNEL
962 Say Y here to make BUG() panics output the file name and line number
963 of the BUG call as well as the EIP and oops trace. This aids
964 debugging but costs about 70-100K of memory.
967 bool "D-cache flush debugging"
968 depends on DEBUG_KERNEL
971 bool "Stack Overflow Detection Support"
975 depends on STACK_DEBUG
980 source "security/Kconfig"
982 source "crypto/Kconfig"