2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
17 config RWSEM_GENERIC_SPINLOCK
21 config RWSEM_XCHGADD_ALGORITHM
24 config GENERIC_CALIBRATE_DELAY
28 mainmenu "Linux/68k Kernel Configuration"
32 menu "Platform dependent setup"
37 The Extended Industry Standard Architecture (EISA) bus was
38 developed as an open alternative to the IBM MicroChannel bus.
40 The EISA bus provided some of the features of the IBM MicroChannel
41 bus while maintaining backward compatibility with cards made for
42 the older ISA bus. The EISA bus saw limited use between 1988 and
43 1995 when it was made obsolete by the PCI bus.
45 Say Y here if you are building a kernel for an EISA-based machine.
52 MicroChannel Architecture is found in some IBM PS/2 machines and
53 laptops. It is a bus system similar to PCI or ISA. See
54 <file:Documentation/mca.txt> (and especially the web page given
55 there) before attempting to build an MCA bus kernel.
60 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
61 computer. These are credit-card size devices such as network cards,
62 modems or hard drives often used with laptops computers. There are
63 actually two varieties of these cards: the older 16 bit PCMCIA cards
64 and the newer 32 bit CardBus cards. If you want to use CardBus
65 cards, you need to say Y here and also to "CardBus support" below.
67 To use your PC-cards, you will need supporting software from David
68 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
69 for location). Please also read the PCMCIA-HOWTO, available from
70 <http://www.tldp.org/docs.html#howto>.
72 To compile this driver as modules, choose M here: the
73 modules will be called pcmcia_core and ds.
78 select MMU_SUN3 if MMU
80 This option enables support for the Sun 3 series of workstations
81 (3/50, 3/60, 3/1xx, 3/2xx systems). Enabling this option requires
82 that all other hardware types must be disabled, as Sun 3 kernels
83 are incompatible with all other m68k targets (including Sun 3x!).
85 If you don't want to compile a kernel exclusively for a Sun 3, say N.
91 This option enables support for the Amiga series of computers. If
92 you plan to use this kernel on an Amiga, say Y here and browse the
93 material available in <file:Documentation/m68k>; otherwise say N.
99 This option enables support for the 68000-based Atari series of
100 computers (including the TT, Falcon and Medusa). If you plan to use
101 this kernel on an Atari, say Y here and browse the material
102 available in <file:Documentation/m68k>; otherwise say N.
106 depends on ATARI && BROKEN
108 This option enables support for the Hades Atari clone. If you plan
109 to use this kernel on a Hades, say Y here; otherwise say N.
116 Find out whether you have a PCI motherboard. PCI is the name of a
117 bus system, i.e. the way the CPU talks to the other stuff inside
118 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
119 VESA. If you have PCI, say Y, otherwise N.
121 The PCI-HOWTO, available from
122 <http://www.tldp.org/docs.html#howto>, contains valuable
123 information about which PCI hardware does work under Linux and which
127 bool "Macintosh support"
130 This option enables support for the Apple Macintosh series of
131 computers (yes, there is experimental support now, at least for part
134 Say N unless you're willing to code the remaining necessary support.
148 bool "Apollo support"
151 Say Y here if you want to run Linux on an MC680x0-based Apollo
152 Domain workstation such as the DN3500.
155 bool "VME (Motorola and BVM) support"
158 Say Y here if you want to build a kernel for a 680x0 based VME
159 board. Boards currently supported include Motorola boards MVME147,
160 MVME162, MVME166, MVME167, MVME172, and MVME177. BVME4000 and
161 BVME6000 boards from BVM Ltd are also supported.
164 bool "MVME147 support"
167 Say Y to include support for early Motorola VME boards. This will
168 build a kernel which can run on MVME147 single-board computers. If
169 you select this option you will have to select the appropriate
170 drivers for SCSI, Ethernet and serial ports later on.
173 bool "MVME162, 166 and 167 support"
176 Say Y to include support for Motorola VME boards. This will build a
177 kernel which can run on MVME162, MVME166, MVME167, MVME172, and
178 MVME177 boards. If you select this option you will have to select
179 the appropriate drivers for SCSI, Ethernet and serial ports later
183 bool "BVME4000 and BVME6000 support"
186 Say Y to include support for VME boards from BVM Ltd. This will
187 build a kernel which can run on BVME4000 and BVME6000 boards. If
188 you select this option you will have to select the appropriate
189 drivers for SCSI, Ethernet and serial ports later on.
192 bool "HP9000/300 and HP9000/400 support"
195 This option enables support for the HP9000/300 and HP9000/400 series
196 of workstations. Support for these machines is still somewhat
197 experimental. If you plan to try to use the kernel on such a machine
199 Everybody else says N.
202 bool "DIO bus support"
206 Say Y here to enable support for the "DIO" expansion bus used in
207 HP300 machines. If you are using such a system you almost certainly
215 This option enables support for the Sun 3x series of workstations.
216 Be warned that this support is very experimental.
217 Note that Sun 3x kernels are not compatible with Sun 3 hardware.
218 General Linux information on the Sun 3x series (now discontinued)
219 is at <http://www.angelfire.com/ca2/tech68k/sun3.html>.
221 If you don't want to compile a kernel for a Sun 3x, say N.
224 bool "Q40/Q60 support"
227 The Q40 is a Motorola 68040-based successor to the Sinclair QL
228 manufactured in Germany. There is an official Q40 home page at
229 <http://www.q40.de/>. This option enables support for the Q40 and
230 Q60. Select your CPU below. For 68LC060 don't forget to enable FPU
233 comment "Processor type"
238 If you anticipate running this kernel on a computer with a MC68020
239 processor, say Y. Otherwise, say N. Note that the 68020 requires a
240 68851 MMU (Memory Management Unit) to run Linux/m68k, except on the
241 Sun 3, which provides its own version.
247 If you anticipate running this kernel on a computer with a MC68030
248 processor, say Y. Otherwise, say N. Note that a MC68EC030 will not
249 work, as it does not include an MMU (Memory Management Unit).
255 If you anticipate running this kernel on a computer with a MC68LC040
256 or MC68040 processor, say Y. Otherwise, say N. Note that an
257 MC68EC040 will not work, as it does not include an MMU (Memory
264 If you anticipate running this kernel on a computer with a MC68060
265 processor, say Y. Otherwise, say N.
269 depends on MMU && !MMU_SUN3
276 bool "Math emulation support (EXPERIMENTAL)"
277 depends on EXPERIMENTAL
279 At some point in the future, this will cause floating-point math
280 instructions to be emulated by the kernel on machines that lack a
281 floating-point math coprocessor. Thrill-seekers and chronically
282 sleep-deprived psychotic hacker types can say Y now, everyone else
283 should probably wait a while.
285 config M68KFPU_EMU_EXTRAPREC
286 bool "Math emulation extra precision"
287 depends on M68KFPU_EMU
289 The fpu uses normally a few bit more during calculations for
290 correct rounding, the emulator can (often) do the same but this
291 extra calculation can cost quite some time, so you can disable
292 it here. The emulator will then "only" calculate with a 64 bit
293 mantissa and round slightly incorrect, what is more then enough
296 config M68KFPU_EMU_ONLY
297 bool "Math emulation only kernel"
298 depends on M68KFPU_EMU
300 This option prevents any floating-point instructions from being
301 compiled into the kernel, thereby the kernel doesn't save any
302 floating point context anymore during task switches, so this
303 kernel will only be usable on machines without a floating-point
304 math coprocessor. This makes the kernel a bit faster as no tests
305 needs to be executed whether a floating-point instruction in the
306 kernel should be executed or not.
309 bool "Advanced configuration options"
311 This gives you access to some advanced options for the CPU. The
312 defaults should be fine for most users, but these options may make
313 it possible for you to improve performance somewhat if you know what
316 Note that the answer to this question won't directly affect the
317 kernel: saying N will just cause the configurator to skip all
318 the questions about these options.
320 Most users should say N to this question.
323 bool "Use read-modify-write instructions"
326 This allows to use certain instructions that work with indivisible
327 read-modify-write bus cycles. While this is faster than the
328 workaround of disabling interrupts, it can conflict with DMA
329 ( = direct memory access) on many Amiga systems, and it is also said
330 to destabilize other machines. It is very likely that this will
331 cause serious problems on any Amiga or Atari Medusa if set. The only
332 configuration where it should work are 68030-based Ataris, where it
333 apparently improves performance. But you've been warned! Unless you
334 really know what you are doing, say N. Try Y only if you're quite
337 config SINGLE_MEMORY_CHUNK
338 bool "Use one physical chunk of memory only"
339 depends on ADVANCED && !SUN3
341 Ignore all but the first contiguous chunk of physical memory for VM
342 purposes. This will save a few bytes kernel size and may speed up
343 some operations. Say N if not sure.
345 config 060_WRITETHROUGH
346 bool "Use write-through caching for 68060 supervisor accesses"
347 depends on ADVANCED && M68060
349 The 68060 generally uses copyback caching of recently accessed data.
350 Copyback caching means that memory writes will be held in an on-chip
351 cache and only written back to memory some time later. Saying Y
352 here will force supervisor (kernel) accesses to use writethrough
353 caching. Writethrough caching means that data is written to memory
354 straight away, so that cache and memory data always agree.
355 Writethrough caching is less efficient, but is needed for some
356 drivers on 68060 based systems where the 68060 bus snooping signal
357 is hardwired on. The 53c710 SCSI driver is known to suffer from
364 source "fs/Kconfig.binfmt"
367 bool "Amiga Zorro (AutoConfig) bus support"
370 This enables support for the Zorro bus in the Amiga. If you have
371 expansion cards in your Amiga that conform to the Amiga
372 AutoConfig(tm) specification, say Y, otherwise N. Note that even
373 expansion cards that do not fit in the Zorro slots but fit in e.g.
374 the CPU slot may fall in this category, so you have to say Y to let
378 bool "Amiga 1200/600 PCMCIA support (EXPERIMENTAL)"
379 depends on AMIGA && EXPERIMENTAL
381 Include support in the kernel for pcmcia on Amiga 1200 and Amiga
382 600. If you intend to use pcmcia cards say Y; otherwise say N.
385 bool "Support for ST-RAM as swap space"
386 depends on ATARI && BROKEN
388 Some Atari 68k machines (including the 520STF and 1020STE) divide
389 their addressable memory into ST and TT sections. The TT section
390 (up to 512MB) is the main memory; the ST section (up to 4MB) is
391 accessible to the built-in graphics board, runs slower, and is
392 present mainly for backward compatibility with older machines.
394 This enables support for using (parts of) ST-RAM as swap space,
395 instead of as normal system memory. This can first enhance system
396 performance if you have lots of alternate RAM (compared to the size
397 of ST-RAM), because executable code always will reside in faster
398 memory. ST-RAM will remain as ultra-fast swap space. On the other
399 hand, it allows much improved dynamic allocations of ST-RAM buffers
400 for device driver modules (e.g. floppy, ACSI, SLM printer, DMA
401 sound). The probability that such allocations at module load time
402 fail is drastically reduced.
405 bool "ST-RAM statistics in /proc"
408 Say Y here to report ST-RAM usage statistics in /proc/stram. See
409 the help for CONFIG_STRAM_SWAP for discussion of ST-RAM and its
413 bool "Use power LED as a heartbeat" if AMIGA || APOLLO || ATARI || MAC ||Q40
414 default y if !AMIGA && !APOLLO && !ATARI && !MAC && !Q40 && HP300
416 Use the power-on LED on your machine as a load meter. The exact
417 behavior is platform-dependent, but normally the flash frequency is
418 a hyperbolic function of the 5-minute load average.
420 # We have a dedicated heartbeat LED. :-)
422 bool "/proc/hardware support"
424 Say Y here to support the /proc/hardware file, which gives you
425 access to information about the machine you're running on,
426 including the model, CPU, MMU, clock speed, BogoMIPS rating,
431 depends on Q40 || AMIGA_PCMCIA || GG2
434 Find out whether you have ISA slots on your motherboard. ISA is the
435 name of a bus system, i.e. the way the CPU talks to the other stuff
436 inside your box. Other bus systems are PCI, EISA, MicroChannel
437 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
438 newer boards don't support it. If you have ISA, say Y, otherwise N.
440 config GENERIC_ISA_DMA
442 depends on Q40 || AMIGA_PCMCIA || GG2
445 source "drivers/pci/Kconfig"
447 source "drivers/zorro/Kconfig"
451 source "drivers/Kconfig"
453 menu "Character devices"
456 tristate "Atari MFP serial support"
459 If you like to use the MFP serial ports ("Modem1", "Serial1") under
460 Linux, say Y. The driver equally supports all kinds of MFP serial
461 ports and automatically detects whether Serial1 is available.
463 To compile this driver as a module, choose M here.
465 Note for Falcon users: You also have an MFP port, it's just not
466 wired to the outside... But you could use the port under Linux.
469 tristate "Atari SCC serial support"
472 If you have serial ports based on a Zilog SCC chip (Modem2, Serial2,
473 LAN) and like to use them under Linux, say Y. All built-in SCC's are
474 supported (TT, MegaSTE, Falcon), and also the ST-ESCC. If you have
475 two connectors for channel A (Serial2 and LAN), they are visible as
476 two separate devices.
478 To compile this driver as a module, choose M here.
481 bool "Atari SCC serial DMA support"
484 This enables DMA support for receiving data on channel A of the SCC.
485 If you have a TT you may say Y here and read
486 drivers/char/atari_SCC.README. All other users should say N here,
487 because only the TT has SCC-DMA, even if your machine keeps claiming
491 tristate "Atari MIDI serial support"
494 If you want to use your Atari's MIDI port in Linux, say Y.
496 To compile this driver as a module, choose M here.
499 tristate "Atari DSP56k support (EXPERIMENTAL)"
500 depends on ATARI && EXPERIMENTAL
502 If you want to be able to use the DSP56001 in Falcons, say Y. This
503 driver is still experimental, and if you don't know what it is, or
504 if you don't have this processor, just say N.
506 To compile this driver as a module, choose M here.
508 config AMIGA_BUILTIN_SERIAL
509 tristate "Amiga builtin serial support"
512 If you want to use your Amiga's built-in serial port in Linux,
515 To compile this driver as a module, choose M here.
517 config WHIPPET_SERIAL
518 tristate "Hisoft Whippet PCMCIA serial support"
519 depends on AMIGA_PCMCIA
521 HiSoft has a web page at <http://www.hisoft.co.uk/>, but there
522 is no listing for the Whippet in their Amiga section.
524 config MULTIFACE_III_TTY
525 tristate "Multiface Card III serial support"
528 If you want to use a Multiface III card's serial port in Linux,
531 To compile this driver as a module, choose M here.
534 tristate "GVP IO-Extender support"
535 depends on PARPORT=n && ZORRO
537 If you want to use a GVP IO-Extender serial card in Linux, say Y.
541 tristate "GVP IO-Extender parallel printer support"
544 Say Y to enable driving a printer from the parallel port on your
545 GVP IO-Extender card, N otherwise.
548 tristate "GVP IO-Extender PLIP support"
551 Say Y to enable doing IP over the parallel port on your GVP
552 IO-Extender card, N otherwise.
555 tristate "Macintosh serial support"
560 depends on INPUT_ADBHID
563 config MAC_ADBKEYCODES
564 bool "Support for ADB raw keycodes"
565 depends on INPUT_ADBHID
567 This provides support for sending raw ADB keycodes to console
568 devices. This is the default up to 2.4.0, but in future this may be
569 phased out in favor of generic Linux keycodes. If you say Y here,
570 you can dynamically switch via the
571 /proc/sys/dev/mac_hid/keyboard_sends_linux_keycodes
572 sysctl and with the "keyboard_sends_linux_keycodes=" kernel
575 If unsure, say Y here.
578 bool "Support for ADB keyboard (old driver)"
579 depends on MAC && !INPUT_ADBHID
581 This option allows you to use an ADB keyboard attached to your
582 machine. Note that this disables any other (ie. PS/2) keyboard
583 support, even if your machine is physically capable of using both at
586 If you use an ADB keyboard (4 pin connector), say Y here.
587 If you use a PS/2 keyboard (6 pin connector), say N here.
590 tristate "HP DCA serial support"
591 depends on DIO && SERIAL_8250
593 If you want to use the internal "DCA" serial ports on an HP300
597 tristate "HP APCI serial support"
598 depends on HP300 && SERIAL_8250 && EXPERIMENTAL
600 If you want to use the internal "APCI" serial ports on an HP400
604 bool "SCC support for MVME147 serial ports"
607 This is the driver for the serial ports on the Motorola MVME147
608 boards. Everyone using one of these boards should say Y here.
611 bool "CD2401 support for MVME166/7 serial ports"
612 depends on MVME16x && BROKEN
614 This is the driver for the serial ports on the Motorola MVME166,
615 167, and 172 boards. Everyone using one of these boards should say
619 bool "SCC support for MVME162 serial ports"
622 This is the driver for the serial ports on the Motorola MVME162 and
623 172 boards. Everyone using one of these boards should say Y here.
626 bool "SCC support for BVME6000 serial ports"
629 This is the driver for the serial ports on the BVME4000 and BVME6000
630 boards from BVM Ltd. Everyone using one of these boards should say
634 bool "Support for DN serial port (dummy)"
637 config SERIAL_CONSOLE
638 bool "Support for serial port console"
639 depends on (AMIGA || ATARI || MAC || SUN3 || SUN3X || VME || APOLLO) && (ATARI_MFPSER=y || ATARI_SCC=y || ATARI_MIDI=y || MAC_SCC=y || AMIGA_BUILTIN_SERIAL=y || GVPIOEXT=y || MULTIFACE_III_TTY=y || SERIAL=y || MVME147_SCC || SERIAL167 || MVME162_SCC || BVME6000_SCC || DN_SERIAL)
641 If you say Y here, it will be possible to use a serial port as the
642 system console (the system console is the device which receives all
643 kernel messages and warnings and which allows logins in single user
644 mode). This could be useful if some terminal or printer is connected
647 Even if you say Y here, the currently visible virtual console
648 (/dev/tty0) will still be used as the system console by default, but
649 you can alter that using a kernel command line option such as
650 "console=ttyS1". (Try "man bootparam" or see the documentation of
651 your boot loader (lilo or loadlin) about how to pass options to the
652 kernel at boot time.)
654 If you don't have a VGA card installed and you say Y here, the
655 kernel will automatically use the first serial line, /dev/ttyS0, as
664 source "arch/m68k/Kconfig.debug"
666 source "security/Kconfig"
668 source "crypto/Kconfig"