xref: /openbmc/linux/arch/m68k/Kconfig (revision e868d61272caa648214046a096e5a6bfc068dc8c)
1#
2# For a description of the syntax of this configuration file,
3# see Documentation/kbuild/kconfig-language.txt.
4#
5config M68K
6	bool
7	default y
8
9config MMU
10	bool
11	default y
12
13config RWSEM_GENERIC_SPINLOCK
14	bool
15	default y
16
17config RWSEM_XCHGADD_ALGORITHM
18	bool
19
20config ARCH_HAS_ILOG2_U32
21	bool
22	default n
23
24config ARCH_HAS_ILOG2_U64
25	bool
26	default n
27
28config GENERIC_HWEIGHT
29	bool
30	default y
31
32config GENERIC_CALIBRATE_DELAY
33	bool
34	default y
35
36config TIME_LOW_RES
37	bool
38	default y
39
40config ARCH_MAY_HAVE_PC_FDC
41	bool
42	depends on Q40 || (BROKEN && SUN3X)
43	default y
44
45config NO_IOPORT
46	def_bool y
47
48mainmenu "Linux/68k Kernel Configuration"
49
50source "init/Kconfig"
51
52menu "Platform dependent setup"
53
54config EISA
55	bool
56	---help---
57	  The Extended Industry Standard Architecture (EISA) bus was
58	  developed as an open alternative to the IBM MicroChannel bus.
59
60	  The EISA bus provided some of the features of the IBM MicroChannel
61	  bus while maintaining backward compatibility with cards made for
62	  the older ISA bus.  The EISA bus saw limited use between 1988 and
63	  1995 when it was made obsolete by the PCI bus.
64
65	  Say Y here if you are building a kernel for an EISA-based machine.
66
67	  Otherwise, say N.
68
69config MCA
70	bool
71	help
72	  MicroChannel Architecture is found in some IBM PS/2 machines and
73	  laptops.  It is a bus system similar to PCI or ISA. See
74	  <file:Documentation/mca.txt> (and especially the web page given
75	  there) before attempting to build an MCA bus kernel.
76
77config PCMCIA
78	tristate
79	---help---
80	  Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
81	  computer.  These are credit-card size devices such as network cards,
82	  modems or hard drives often used with laptops computers.  There are
83	  actually two varieties of these cards: the older 16 bit PCMCIA cards
84	  and the newer 32 bit CardBus cards.  If you want to use CardBus
85	  cards, you need to say Y here and also to "CardBus support" below.
86
87	  To use your PC-cards, you will need supporting software from David
88	  Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
89	  for location).  Please also read the PCMCIA-HOWTO, available from
90	  <http://www.tldp.org/docs.html#howto>.
91
92	  To compile this driver as modules, choose M here: the
93	  modules will be called pcmcia_core and ds.
94
95config SUN3
96	bool "Sun3 support"
97	select M68020
98	select MMU_SUN3 if MMU
99	help
100	  This option enables support for the Sun 3 series of workstations
101	  (3/50, 3/60, 3/1xx, 3/2xx systems). Enabling this option requires
102	  that all other hardware types must be disabled, as Sun 3 kernels
103	  are incompatible with all other m68k targets (including Sun 3x!).
104
105	  If you don't want to compile a kernel exclusively for a Sun 3, say N.
106
107config AMIGA
108	bool "Amiga support"
109	depends on !MMU_SUN3
110	help
111	  This option enables support for the Amiga series of computers. If
112	  you plan to use this kernel on an Amiga, say Y here and browse the
113	  material available in <file:Documentation/m68k>; otherwise say N.
114
115config ATARI
116	bool "Atari support"
117	depends on !MMU_SUN3
118	help
119	  This option enables support for the 68000-based Atari series of
120	  computers (including the TT, Falcon and Medusa). If you plan to use
121	  this kernel on an Atari, say Y here and browse the material
122	  available in <file:Documentation/m68k>; otherwise say N.
123
124config HADES
125	bool "Hades support"
126	depends on ATARI && BROKEN
127	help
128	  This option enables support for the Hades Atari clone. If you plan
129	  to use this kernel on a Hades, say Y here; otherwise say N.
130
131config PCI
132	bool
133	depends on HADES
134	default y
135	help
136	  Find out whether you have a PCI motherboard. PCI is the name of a
137	  bus system, i.e. the way the CPU talks to the other stuff inside
138	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
139	  VESA. If you have PCI, say Y, otherwise N.
140
141	  The PCI-HOWTO, available from
142	  <http://www.tldp.org/docs.html#howto>, contains valuable
143	  information about which PCI hardware does work under Linux and which
144	  doesn't.
145
146config MAC
147	bool "Macintosh support"
148	depends on !MMU_SUN3
149	help
150	  This option enables support for the Apple Macintosh series of
151	  computers (yes, there is experimental support now, at least for part
152	  of the series).
153
154	  Say N unless you're willing to code the remaining necessary support.
155	  ;)
156
157config NUBUS
158	bool
159	depends on MAC
160	default y
161
162config M68K_L2_CACHE
163	bool
164	depends on MAC
165	default y
166
167config APOLLO
168	bool "Apollo support"
169	depends on !MMU_SUN3
170	help
171	  Say Y here if you want to run Linux on an MC680x0-based Apollo
172	  Domain workstation such as the DN3500.
173
174config VME
175	bool "VME (Motorola and BVM) support"
176	depends on !MMU_SUN3
177	help
178	  Say Y here if you want to build a kernel for a 680x0 based VME
179	  board.  Boards currently supported include Motorola boards MVME147,
180	  MVME162, MVME166, MVME167, MVME172, and MVME177.  BVME4000 and
181	  BVME6000 boards from BVM Ltd are also supported.
182
183config MVME147
184	bool "MVME147 support"
185	depends on VME
186	help
187	  Say Y to include support for early Motorola VME boards.  This will
188	  build a kernel which can run on MVME147 single-board computers.  If
189	  you select this option you will have to select the appropriate
190	  drivers for SCSI, Ethernet and serial ports later on.
191
192config MVME16x
193	bool "MVME162, 166 and 167 support"
194	depends on VME
195	help
196	  Say Y to include support for Motorola VME boards.  This will build a
197	  kernel which can run on MVME162, MVME166, MVME167, MVME172, and
198	  MVME177 boards.  If you select this option you will have to select
199	  the appropriate drivers for SCSI, Ethernet and serial ports later
200	  on.
201
202config BVME6000
203	bool "BVME4000 and BVME6000 support"
204	depends on VME
205	help
206	  Say Y to include support for VME boards from BVM Ltd.  This will
207	  build a kernel which can run on BVME4000 and BVME6000 boards.  If
208	  you select this option you will have to select the appropriate
209	  drivers for SCSI, Ethernet and serial ports later on.
210
211config HP300
212	bool "HP9000/300 and HP9000/400 support"
213	depends on !MMU_SUN3
214	help
215	  This option enables support for the HP9000/300 and HP9000/400 series
216	  of workstations. Support for these machines is still somewhat
217	  experimental. If you plan to try to use the kernel on such a machine
218	  say Y here.
219	  Everybody else says N.
220
221config DIO
222	bool "DIO bus support"
223	depends on HP300
224	default y
225	help
226	  Say Y here to enable support for the "DIO" expansion bus used in
227	  HP300 machines. If you are using such a system you almost certainly
228	  want this.
229
230config SUN3X
231	bool "Sun3x support"
232	depends on !MMU_SUN3
233	select M68030
234	help
235	  This option enables support for the Sun 3x series of workstations.
236	  Be warned that this support is very experimental.
237	  Note that Sun 3x kernels are not compatible with Sun 3 hardware.
238	  General Linux information on the Sun 3x series (now discontinued)
239	  is at <http://www.angelfire.com/ca2/tech68k/sun3.html>.
240
241	  If you don't want to compile a kernel for a Sun 3x, say N.
242
243config Q40
244	bool "Q40/Q60 support"
245	depends on !MMU_SUN3
246	help
247	  The Q40 is a Motorola 68040-based successor to the Sinclair QL
248	  manufactured in Germany.  There is an official Q40 home page at
249	  <http://www.q40.de/>.  This option enables support for the Q40 and
250	  Q60. Select your CPU below.  For 68LC060 don't forget to enable FPU
251	  emulation.
252
253comment "Processor type"
254
255config M68020
256	bool "68020 support"
257	help
258	  If you anticipate running this kernel on a computer with a MC68020
259	  processor, say Y. Otherwise, say N. Note that the 68020 requires a
260	  68851 MMU (Memory Management Unit) to run Linux/m68k, except on the
261	  Sun 3, which provides its own version.
262
263config M68030
264	bool "68030 support"
265	depends on !MMU_SUN3
266	help
267	  If you anticipate running this kernel on a computer with a MC68030
268	  processor, say Y. Otherwise, say N. Note that a MC68EC030 will not
269	  work, as it does not include an MMU (Memory Management Unit).
270
271config M68040
272	bool "68040 support"
273	depends on !MMU_SUN3
274	help
275	  If you anticipate running this kernel on a computer with a MC68LC040
276	  or MC68040 processor, say Y. Otherwise, say N. Note that an
277	  MC68EC040 will not work, as it does not include an MMU (Memory
278	  Management Unit).
279
280config M68060
281	bool "68060 support"
282	depends on !MMU_SUN3
283	help
284	  If you anticipate running this kernel on a computer with a MC68060
285	  processor, say Y. Otherwise, say N.
286
287config MMU_MOTOROLA
288	bool
289	depends on MMU && !MMU_SUN3
290	default y
291
292config MMU_SUN3
293	bool
294
295config M68KFPU_EMU
296	bool "Math emulation support (EXPERIMENTAL)"
297	depends on EXPERIMENTAL
298	help
299	  At some point in the future, this will cause floating-point math
300	  instructions to be emulated by the kernel on machines that lack a
301	  floating-point math coprocessor.  Thrill-seekers and chronically
302	  sleep-deprived psychotic hacker types can say Y now, everyone else
303	  should probably wait a while.
304
305config M68KFPU_EMU_EXTRAPREC
306	bool "Math emulation extra precision"
307	depends on M68KFPU_EMU
308	help
309	  The fpu uses normally a few bit more during calculations for
310	  correct rounding, the emulator can (often) do the same but this
311	  extra calculation can cost quite some time, so you can disable
312	  it here. The emulator will then "only" calculate with a 64 bit
313	  mantissa and round slightly incorrect, what is more then enough
314	  for normal usage.
315
316config M68KFPU_EMU_ONLY
317	bool "Math emulation only kernel"
318	depends on M68KFPU_EMU
319	help
320	  This option prevents any floating-point instructions from being
321	  compiled into the kernel, thereby the kernel doesn't save any
322	  floating point context anymore during task switches, so this
323	  kernel will only be usable on machines without a floating-point
324	  math coprocessor. This makes the kernel a bit faster as no tests
325	  needs to be executed whether a floating-point instruction in the
326	  kernel should be executed or not.
327
328config ADVANCED
329	bool "Advanced configuration options"
330	---help---
331	  This gives you access to some advanced options for the CPU. The
332	  defaults should be fine for most users, but these options may make
333	  it possible for you to improve performance somewhat if you know what
334	  you are doing.
335
336	  Note that the answer to this question won't directly affect the
337	  kernel: saying N will just cause the configurator to skip all
338	  the questions about these options.
339
340	  Most users should say N to this question.
341
342config RMW_INSNS
343	bool "Use read-modify-write instructions"
344	depends on ADVANCED
345	---help---
346	  This allows to use certain instructions that work with indivisible
347	  read-modify-write bus cycles. While this is faster than the
348	  workaround of disabling interrupts, it can conflict with DMA
349	  ( = direct memory access) on many Amiga systems, and it is also said
350	  to destabilize other machines. It is very likely that this will
351	  cause serious problems on any Amiga or Atari Medusa if set. The only
352	  configuration where it should work are 68030-based Ataris, where it
353	  apparently improves performance. But you've been warned! Unless you
354	  really know what you are doing, say N. Try Y only if you're quite
355	  adventurous.
356
357config SINGLE_MEMORY_CHUNK
358	bool "Use one physical chunk of memory only"
359	depends on ADVANCED && !SUN3
360	help
361	  Ignore all but the first contiguous chunk of physical memory for VM
362	  purposes.  This will save a few bytes kernel size and may speed up
363	  some operations.  Say N if not sure.
364
365config 060_WRITETHROUGH
366	bool "Use write-through caching for 68060 supervisor accesses"
367	depends on ADVANCED && M68060
368	---help---
369	  The 68060 generally uses copyback caching of recently accessed data.
370	  Copyback caching means that memory writes will be held in an on-chip
371	  cache and only written back to memory some time later.  Saying Y
372	  here will force supervisor (kernel) accesses to use writethrough
373	  caching.  Writethrough caching means that data is written to memory
374	  straight away, so that cache and memory data always agree.
375	  Writethrough caching is less efficient, but is needed for some
376	  drivers on 68060 based systems where the 68060 bus snooping signal
377	  is hardwired on.  The 53c710 SCSI driver is known to suffer from
378	  this problem.
379
380source "mm/Kconfig"
381
382endmenu
383
384menu "General setup"
385
386source "fs/Kconfig.binfmt"
387
388config ZORRO
389	bool "Amiga Zorro (AutoConfig) bus support"
390	depends on AMIGA
391	help
392	  This enables support for the Zorro bus in the Amiga. If you have
393	  expansion cards in your Amiga that conform to the Amiga
394	  AutoConfig(tm) specification, say Y, otherwise N. Note that even
395	  expansion cards that do not fit in the Zorro slots but fit in e.g.
396	  the CPU slot may fall in this category, so you have to say Y to let
397	  Linux use these.
398
399config AMIGA_PCMCIA
400	bool "Amiga 1200/600 PCMCIA support (EXPERIMENTAL)"
401	depends on AMIGA && EXPERIMENTAL
402	help
403	  Include support in the kernel for pcmcia on Amiga 1200 and Amiga
404	  600. If you intend to use pcmcia cards say Y; otherwise say N.
405
406config STRAM_PROC
407	bool "ST-RAM statistics in /proc"
408	depends on ATARI
409	help
410	  Say Y here to report ST-RAM usage statistics in /proc/stram.
411
412config ATARI_KBD_CORE
413	bool
414
415config HEARTBEAT
416	bool "Use power LED as a heartbeat" if AMIGA || APOLLO || ATARI || MAC ||Q40
417	default y if !AMIGA && !APOLLO && !ATARI && !MAC && !Q40 && HP300
418	help
419	  Use the power-on LED on your machine as a load meter.  The exact
420	  behavior is platform-dependent, but normally the flash frequency is
421	  a hyperbolic function of the 5-minute load average.
422
423# We have a dedicated heartbeat LED. :-)
424config PROC_HARDWARE
425	bool "/proc/hardware support"
426	help
427	  Say Y here to support the /proc/hardware file, which gives you
428	  access to information about the machine you're running on,
429	  including the model, CPU, MMU, clock speed, BogoMIPS rating,
430	  and memory size.
431
432config ISA
433	bool
434	depends on Q40 || AMIGA_PCMCIA || GG2
435	default y
436	help
437	  Find out whether you have ISA slots on your motherboard.  ISA is the
438	  name of a bus system, i.e. the way the CPU talks to the other stuff
439	  inside your box.  Other bus systems are PCI, EISA, MicroChannel
440	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
441	  newer boards don't support it.  If you have ISA, say Y, otherwise N.
442
443config GENERIC_ISA_DMA
444	bool
445	depends on Q40 || AMIGA_PCMCIA || GG2
446	default y
447
448config ZONE_DMA
449	bool
450	default y
451
452source "drivers/pci/Kconfig"
453
454source "drivers/zorro/Kconfig"
455
456endmenu
457
458source "net/Kconfig"
459
460source "drivers/Kconfig"
461
462menu "Character devices"
463
464config ATARI_MFPSER
465	tristate "Atari MFP serial support"
466	depends on ATARI
467	---help---
468	  If you like to use the MFP serial ports ("Modem1", "Serial1") under
469	  Linux, say Y. The driver equally supports all kinds of MFP serial
470	  ports and automatically detects whether Serial1 is available.
471
472	  To compile this driver as a module, choose M here.
473
474	  Note for Falcon users: You also have an MFP port, it's just not
475	  wired to the outside... But you could use the port under Linux.
476
477config ATARI_SCC
478	tristate "Atari SCC serial support"
479	depends on ATARI
480	---help---
481	  If you have serial ports based on a Zilog SCC chip (Modem2, Serial2,
482	  LAN) and like to use them under Linux, say Y. All built-in SCC's are
483	  supported (TT, MegaSTE, Falcon), and also the ST-ESCC. If you have
484	  two connectors for channel A (Serial2 and LAN), they are visible as
485	  two separate devices.
486
487	  To compile this driver as a module, choose M here.
488
489config ATARI_SCC_DMA
490	bool "Atari SCC serial DMA support"
491	depends on ATARI_SCC
492	help
493	  This enables DMA support for receiving data on channel A of the SCC.
494	  If you have a TT you may say Y here and read
495	  drivers/char/atari_SCC.README. All other users should say N here,
496	  because only the TT has SCC-DMA, even if your machine keeps claiming
497	  so at boot time.
498
499config ATARI_MIDI
500	tristate "Atari MIDI serial support"
501	depends on ATARI
502	help
503	  If you want to use your Atari's MIDI port in Linux, say Y.
504
505	  To compile this driver as a module, choose M here.
506
507config ATARI_DSP56K
508	tristate "Atari DSP56k support (EXPERIMENTAL)"
509	depends on ATARI && EXPERIMENTAL
510	help
511	  If you want to be able to use the DSP56001 in Falcons, say Y. This
512	  driver is still experimental, and if you don't know what it is, or
513	  if you don't have this processor, just say N.
514
515	  To compile this driver as a module, choose M here.
516
517config AMIGA_BUILTIN_SERIAL
518	tristate "Amiga builtin serial support"
519	depends on AMIGA
520	help
521	  If you want to use your Amiga's built-in serial port in Linux,
522	  answer Y.
523
524	  To compile this driver as a module, choose M here.
525
526config WHIPPET_SERIAL
527	tristate "Hisoft Whippet PCMCIA serial support"
528	depends on AMIGA_PCMCIA
529	help
530	  HiSoft has a web page at <http://www.hisoft.co.uk/>, but there
531	  is no listing for the Whippet in their Amiga section.
532
533config MULTIFACE_III_TTY
534	tristate "Multiface Card III serial support"
535	depends on AMIGA
536	help
537	  If you want to use a Multiface III card's serial port in Linux,
538	  answer Y.
539
540	  To compile this driver as a module, choose M here.
541
542config GVPIOEXT
543	tristate "GVP IO-Extender support"
544	depends on PARPORT=n && ZORRO
545	help
546	  If you want to use a GVP IO-Extender serial card in Linux, say Y.
547	  Otherwise, say N.
548
549config GVPIOEXT_LP
550	tristate "GVP IO-Extender parallel printer support"
551	depends on GVPIOEXT
552	help
553	  Say Y to enable driving a printer from the parallel port on your
554	  GVP IO-Extender card, N otherwise.
555
556config GVPIOEXT_PLIP
557	tristate "GVP IO-Extender PLIP support"
558	depends on GVPIOEXT
559	help
560	  Say Y to enable doing IP over the parallel port on your GVP
561	  IO-Extender card, N otherwise.
562
563config MAC_SCC
564	tristate "Macintosh serial support"
565	depends on MAC
566
567config MAC_HID
568	bool
569	depends on INPUT_ADBHID
570	default y
571
572config MAC_ADBKEYCODES
573	bool "Support for ADB raw keycodes"
574	depends on INPUT_ADBHID
575	help
576	  This provides support for sending raw ADB keycodes to console
577	  devices.  This is the default up to 2.4.0, but in future this may be
578	  phased out in favor of generic Linux keycodes.  If you say Y here,
579	  you can dynamically switch via the
580	  /proc/sys/dev/mac_hid/keyboard_sends_linux_keycodes
581	  sysctl and with the "keyboard_sends_linux_keycodes=" kernel
582	  argument.
583
584	  If unsure, say Y here.
585
586config ADB_KEYBOARD
587	bool "Support for ADB keyboard (old driver)"
588	depends on MAC && !INPUT_ADBHID
589	help
590	  This option allows you to use an ADB keyboard attached to your
591	  machine. Note that this disables any other (ie. PS/2) keyboard
592	  support, even if your machine is physically capable of using both at
593	  the same time.
594
595	  If you use an ADB keyboard (4 pin connector), say Y here.
596	  If you use a PS/2 keyboard (6 pin connector), say N here.
597
598config HPDCA
599	tristate "HP DCA serial support"
600	depends on DIO && SERIAL_8250
601	help
602	  If you want to use the internal "DCA" serial ports on an HP300
603	  machine, say Y here.
604
605config HPAPCI
606	tristate "HP APCI serial support"
607	depends on HP300 && SERIAL_8250 && EXPERIMENTAL
608	help
609	  If you want to use the internal "APCI" serial ports on an HP400
610	  machine, say Y here.
611
612config MVME147_SCC
613	bool "SCC support for MVME147 serial ports"
614	depends on MVME147
615	help
616	  This is the driver for the serial ports on the Motorola MVME147
617	  boards.  Everyone using one of these boards should say Y here.
618
619config SERIAL167
620	bool "CD2401 support for MVME166/7 serial ports"
621	depends on MVME16x
622	help
623	  This is the driver for the serial ports on the Motorola MVME166,
624	  167, and 172 boards.  Everyone using one of these boards should say
625	  Y here.
626
627config MVME162_SCC
628	bool "SCC support for MVME162 serial ports"
629	depends on MVME16x
630	help
631	  This is the driver for the serial ports on the Motorola MVME162 and
632	  172 boards.  Everyone using one of these boards should say Y here.
633
634config BVME6000_SCC
635	bool "SCC support for BVME6000 serial ports"
636	depends on BVME6000
637	help
638	  This is the driver for the serial ports on the BVME4000 and BVME6000
639	  boards from BVM Ltd.  Everyone using one of these boards should say
640	  Y here.
641
642config DN_SERIAL
643	bool "Support for DN serial port (dummy)"
644	depends on APOLLO
645
646config SERIAL_CONSOLE
647	bool "Support for serial port console"
648	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)
649	---help---
650	  If you say Y here, it will be possible to use a serial port as the
651	  system console (the system console is the device which receives all
652	  kernel messages and warnings and which allows logins in single user
653	  mode). This could be useful if some terminal or printer is connected
654	  to that serial port.
655
656	  Even if you say Y here, the currently visible virtual console
657	  (/dev/tty0) will still be used as the system console by default, but
658	  you can alter that using a kernel command line option such as
659	  "console=ttyS1". (Try "man bootparam" or see the documentation of
660	  your boot loader (lilo or loadlin) about how to pass options to the
661	  kernel at boot time.)
662
663	  If you don't have a VGA card installed and you say Y here, the
664	  kernel will automatically use the first serial line, /dev/ttyS0, as
665	  system console.
666
667	  If unsure, say N.
668
669endmenu
670
671source "fs/Kconfig"
672
673source "arch/m68k/Kconfig.debug"
674
675source "security/Kconfig"
676
677source "crypto/Kconfig"
678
679source "lib/Kconfig"
680