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Greg Ungerer0e152d82011-06-20 15:49:09 +10001comment "Processor Type"
2
Geert Uytterhoevenad8f9552011-12-26 20:32:02 +01003choice
4 prompt "CPU family support"
5 default M68KCLASSIC if MMU
6 default COLDFIRE if !MMU
7 help
8 The Freescale (was Motorola) M68K family of processors implements
9 the full 68000 processor instruction set.
Masanari Iida6b2aac42012-04-14 00:14:11 +090010 The Freescale ColdFire family of processors is a modern derivative
Geert Uytterhoevenad8f9552011-12-26 20:32:02 +010011 of the 68000 processor family. They are mainly targeted at embedded
12 applications, and are all System-On-Chip (SOC) devices, as opposed
13 to stand alone CPUs. They implement a subset of the original 68000
14 processor instruction set.
15 If you anticipate running this kernel on a computer with a classic
16 MC68xxx processor, select M68KCLASSIC.
17 If you anticipate running this kernel on a computer with a ColdFire
18 processor, select COLDFIRE.
19
20config M68KCLASSIC
21 bool "Classic M68K CPU family support"
22
23config COLDFIRE
24 bool "Coldfire CPU family support"
Alexandre Courbot765278b2013-03-12 17:54:50 +090025 select ARCH_REQUIRE_GPIOLIB
Mark Brown7563bbf2012-04-15 10:52:54 +010026 select ARCH_HAVE_CUSTOM_GPIO_H
Geert Uytterhoevenad8f9552011-12-26 20:32:02 +010027 select CPU_HAS_NO_BITFIELDS
28 select CPU_HAS_NO_MULDIV64
29 select GENERIC_CSUM
Greg Ungerere7d65822012-08-03 16:08:36 +100030 select HAVE_CLK
Geert Uytterhoevenad8f9552011-12-26 20:32:02 +010031
32endchoice
33
34if M68KCLASSIC
35
Greg Ungerer0e152d82011-06-20 15:49:09 +100036config M68000
Luis Alves4674e8d2012-10-24 00:45:23 +010037 bool "MC68000"
Luis Alves9da1a842012-10-25 21:01:16 +010038 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +100039 select CPU_HAS_NO_BITFIELDS
Greg Ungerer84f3fb72011-11-11 15:13:08 +100040 select CPU_HAS_NO_MULDIV64
Geert Uytterhoeven9f1f1182012-06-06 19:37:52 +020041 select CPU_HAS_NO_UNALIGNED
Greg Ungerer7f73baf2011-10-18 15:49:19 +100042 select GENERIC_CSUM
Greg Ungerer0e152d82011-06-20 15:49:09 +100043 help
44 The Freescale (was Motorola) 68000 CPU is the first generation of
45 the well known M68K family of processors. The CPU core as well as
46 being available as a stand alone CPU was also used in many
47 System-On-Chip devices (eg 68328, 68302, etc). It does not contain
48 a paging MMU.
49
50config MCPU32
51 bool
52 select CPU_HAS_NO_BITFIELDS
Geert Uytterhoeven7df0d272012-06-06 19:39:39 +020053 select CPU_HAS_NO_UNALIGNED
Greg Ungerer0e152d82011-06-20 15:49:09 +100054 help
55 The Freescale (was then Motorola) CPU32 is a CPU core that is
56 based on the 68020 processor. For the most part it is used in
57 System-On-Chip parts, and does not contain a paging MMU.
58
Greg Ungerer0e152d82011-06-20 15:49:09 +100059config M68020
60 bool "68020 support"
61 depends on MMU
Greg Ungerere08d7032011-10-14 14:43:30 +100062 select CPU_HAS_ADDRESS_SPACES
Greg Ungerer0e152d82011-06-20 15:49:09 +100063 help
64 If you anticipate running this kernel on a computer with a MC68020
65 processor, say Y. Otherwise, say N. Note that the 68020 requires a
66 68851 MMU (Memory Management Unit) to run Linux/m68k, except on the
67 Sun 3, which provides its own version.
68
69config M68030
70 bool "68030 support"
71 depends on MMU && !MMU_SUN3
Greg Ungerere08d7032011-10-14 14:43:30 +100072 select CPU_HAS_ADDRESS_SPACES
Greg Ungerer0e152d82011-06-20 15:49:09 +100073 help
74 If you anticipate running this kernel on a computer with a MC68030
75 processor, say Y. Otherwise, say N. Note that a MC68EC030 will not
76 work, as it does not include an MMU (Memory Management Unit).
77
78config M68040
79 bool "68040 support"
80 depends on MMU && !MMU_SUN3
Greg Ungerere08d7032011-10-14 14:43:30 +100081 select CPU_HAS_ADDRESS_SPACES
Greg Ungerer0e152d82011-06-20 15:49:09 +100082 help
83 If you anticipate running this kernel on a computer with a MC68LC040
84 or MC68040 processor, say Y. Otherwise, say N. Note that an
85 MC68EC040 will not work, as it does not include an MMU (Memory
86 Management Unit).
87
88config M68060
89 bool "68060 support"
90 depends on MMU && !MMU_SUN3
Greg Ungerere08d7032011-10-14 14:43:30 +100091 select CPU_HAS_ADDRESS_SPACES
Greg Ungerer0e152d82011-06-20 15:49:09 +100092 help
93 If you anticipate running this kernel on a computer with a MC68060
94 processor, say Y. Otherwise, say N.
95
96config M68328
97 bool "MC68328"
98 depends on !MMU
99 select M68000
100 help
101 Motorola 68328 processor support.
102
103config M68EZ328
104 bool "MC68EZ328"
105 depends on !MMU
106 select M68000
107 help
108 Motorola 68EX328 processor support.
109
110config M68VZ328
111 bool "MC68VZ328"
112 depends on !MMU
113 select M68000
114 help
115 Motorola 68VZ328 processor support.
116
117config M68360
118 bool "MC68360"
119 depends on !MMU
120 select MCPU32
121 help
122 Motorola 68360 processor support.
123
Geert Uytterhoevenad8f9552011-12-26 20:32:02 +0100124endif # M68KCLASSIC
125
126if COLDFIRE
127
Greg Ungerer0e152d82011-06-20 15:49:09 +1000128config M5206
129 bool "MCF5206"
130 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000131 select COLDFIRE_SW_A7
132 select HAVE_MBAR
133 help
134 Motorola ColdFire 5206 processor support.
135
136config M5206e
137 bool "MCF5206e"
138 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000139 select COLDFIRE_SW_A7
140 select HAVE_MBAR
141 help
142 Motorola ColdFire 5206e processor support.
143
144config M520x
145 bool "MCF520x"
146 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000147 select GENERIC_CLOCKEVENTS
148 select HAVE_CACHE_SPLIT
149 help
150 Freescale Coldfire 5207/5208 processor support.
151
152config M523x
153 bool "MCF523x"
154 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000155 select GENERIC_CLOCKEVENTS
156 select HAVE_CACHE_SPLIT
157 select HAVE_IPSBAR
158 help
159 Freescale Coldfire 5230/1/2/4/5 processor support
160
161config M5249
162 bool "MCF5249"
163 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000164 select COLDFIRE_SW_A7
165 select HAVE_MBAR
166 help
167 Motorola ColdFire 5249 processor support.
168
Steven King04e037a2012-06-05 08:23:08 -0700169config M525x
170 bool "MCF525x"
171 depends on !MMU
172 select COLDFIRE_SW_A7
173 select HAVE_MBAR
174 help
175 Freescale (Motorola) Coldfire 5251/5253 processor support.
176
Greg Ungerer0e152d82011-06-20 15:49:09 +1000177config M527x
178 bool
179
180config M5271
181 bool "MCF5271"
182 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000183 select M527x
184 select HAVE_CACHE_SPLIT
185 select HAVE_IPSBAR
186 select GENERIC_CLOCKEVENTS
187 help
188 Freescale (Motorola) ColdFire 5270/5271 processor support.
189
190config M5272
191 bool "MCF5272"
192 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000193 select COLDFIRE_SW_A7
194 select HAVE_MBAR
195 help
196 Motorola ColdFire 5272 processor support.
197
198config M5275
199 bool "MCF5275"
200 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000201 select M527x
202 select HAVE_CACHE_SPLIT
203 select HAVE_IPSBAR
204 select GENERIC_CLOCKEVENTS
205 help
206 Freescale (Motorola) ColdFire 5274/5275 processor support.
207
208config M528x
209 bool "MCF528x"
210 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000211 select GENERIC_CLOCKEVENTS
212 select HAVE_CACHE_SPLIT
213 select HAVE_IPSBAR
214 help
215 Motorola ColdFire 5280/5282 processor support.
216
217config M5307
218 bool "MCF5307"
219 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000220 select COLDFIRE_SW_A7
221 select HAVE_CACHE_CB
222 select HAVE_MBAR
223 help
224 Motorola ColdFire 5307 processor support.
225
Greg Ungerer6eac4022012-11-05 12:01:38 +1000226config M53xx
227 bool
228
Greg Ungerer0e152d82011-06-20 15:49:09 +1000229config M532x
230 bool "MCF532x"
231 depends on !MMU
Greg Ungerer6eac4022012-11-05 12:01:38 +1000232 select M53xx
Greg Ungerer0e152d82011-06-20 15:49:09 +1000233 select HAVE_CACHE_CB
234 help
235 Freescale (Motorola) ColdFire 532x processor support.
236
Greg Ungerere9d9dc62012-11-05 15:32:15 +1000237config M537x
238 bool "MCF537x"
239 depends on !MMU
240 select M53xx
241 select HAVE_CACHE_CB
242 help
243 Freescale ColdFire 537x processor support.
244
Greg Ungerer0e152d82011-06-20 15:49:09 +1000245config M5407
246 bool "MCF5407"
247 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000248 select COLDFIRE_SW_A7
249 select HAVE_CACHE_CB
250 select HAVE_MBAR
251 help
252 Motorola ColdFire 5407 processor support.
253
254config M54xx
255 bool
256
257config M547x
258 bool "MCF547x"
Greg Ungerer0e152d82011-06-20 15:49:09 +1000259 select M54xx
Greg Ungerer1f7034b2011-10-19 14:13:18 +1000260 select MMU_COLDFIRE if MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000261 select HAVE_CACHE_CB
262 select HAVE_MBAR
263 help
264 Freescale ColdFire 5470/5471/5472/5473/5474/5475 processor support.
265
266config M548x
267 bool "MCF548x"
Greg Ungerer1f7034b2011-10-19 14:13:18 +1000268 select MMU_COLDFIRE if MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000269 select M54xx
270 select HAVE_CACHE_CB
271 select HAVE_MBAR
272 help
273 Freescale ColdFire 5480/5481/5482/5483/5484/5485 processor support.
274
Steven Kingbea8bcb2012-06-06 14:28:31 -0700275config M5441x
276 bool "MCF5441x"
277 depends on !MMU
278 select GENERIC_CLOCKEVENTS
279 select HAVE_CACHE_CB
280 help
281 Freescale Coldfire 54410/54415/54416/54417/54418 processor support.
282
Geert Uytterhoevenad8f9552011-12-26 20:32:02 +0100283endif # COLDFIRE
284
Greg Ungerer0e152d82011-06-20 15:49:09 +1000285
286comment "Processor Specific Options"
287
288config M68KFPU_EMU
Kees Cook112f8b12012-10-23 13:01:27 -0700289 bool "Math emulation support"
Greg Ungerer0e152d82011-06-20 15:49:09 +1000290 depends on MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000291 help
292 At some point in the future, this will cause floating-point math
293 instructions to be emulated by the kernel on machines that lack a
294 floating-point math coprocessor. Thrill-seekers and chronically
295 sleep-deprived psychotic hacker types can say Y now, everyone else
296 should probably wait a while.
297
298config M68KFPU_EMU_EXTRAPREC
299 bool "Math emulation extra precision"
300 depends on M68KFPU_EMU
301 help
302 The fpu uses normally a few bit more during calculations for
303 correct rounding, the emulator can (often) do the same but this
304 extra calculation can cost quite some time, so you can disable
305 it here. The emulator will then "only" calculate with a 64 bit
306 mantissa and round slightly incorrect, what is more than enough
307 for normal usage.
308
309config M68KFPU_EMU_ONLY
310 bool "Math emulation only kernel"
311 depends on M68KFPU_EMU
312 help
313 This option prevents any floating-point instructions from being
314 compiled into the kernel, thereby the kernel doesn't save any
315 floating point context anymore during task switches, so this
316 kernel will only be usable on machines without a floating-point
317 math coprocessor. This makes the kernel a bit faster as no tests
318 needs to be executed whether a floating-point instruction in the
319 kernel should be executed or not.
320
321config ADVANCED
322 bool "Advanced configuration options"
323 depends on MMU
324 ---help---
325 This gives you access to some advanced options for the CPU. The
326 defaults should be fine for most users, but these options may make
327 it possible for you to improve performance somewhat if you know what
328 you are doing.
329
330 Note that the answer to this question won't directly affect the
331 kernel: saying N will just cause the configurator to skip all
332 the questions about these options.
333
334 Most users should say N to this question.
335
336config RMW_INSNS
337 bool "Use read-modify-write instructions"
338 depends on ADVANCED
339 ---help---
340 This allows to use certain instructions that work with indivisible
341 read-modify-write bus cycles. While this is faster than the
342 workaround of disabling interrupts, it can conflict with DMA
343 ( = direct memory access) on many Amiga systems, and it is also said
344 to destabilize other machines. It is very likely that this will
345 cause serious problems on any Amiga or Atari Medusa if set. The only
346 configuration where it should work are 68030-based Ataris, where it
347 apparently improves performance. But you've been warned! Unless you
348 really know what you are doing, say N. Try Y only if you're quite
349 adventurous.
350
351config SINGLE_MEMORY_CHUNK
352 bool "Use one physical chunk of memory only" if ADVANCED && !SUN3
353 depends on MMU
354 default y if SUN3
355 select NEED_MULTIPLE_NODES
356 help
357 Ignore all but the first contiguous chunk of physical memory for VM
358 purposes. This will save a few bytes kernel size and may speed up
359 some operations. Say N if not sure.
360
361config ARCH_DISCONTIGMEM_ENABLE
362 def_bool MMU && !SINGLE_MEMORY_CHUNK
363
364config 060_WRITETHROUGH
365 bool "Use write-through caching for 68060 supervisor accesses"
366 depends on ADVANCED && M68060
367 ---help---
368 The 68060 generally uses copyback caching of recently accessed data.
369 Copyback caching means that memory writes will be held in an on-chip
370 cache and only written back to memory some time later. Saying Y
371 here will force supervisor (kernel) accesses to use writethrough
372 caching. Writethrough caching means that data is written to memory
373 straight away, so that cache and memory data always agree.
374 Writethrough caching is less efficient, but is needed for some
375 drivers on 68060 based systems where the 68060 bus snooping signal
376 is hardwired on. The 53c710 SCSI driver is known to suffer from
377 this problem.
378
379config M68K_L2_CACHE
380 bool
381 depends on MAC
382 default y
383
384config NODES_SHIFT
385 int
386 default "3"
387 depends on !SINGLE_MEMORY_CHUNK
388
Geert Uytterhoeven022613e2012-06-06 17:26:35 +0200389config CPU_HAS_NO_BITFIELDS
390 bool
391
392config CPU_HAS_NO_MULDIV64
393 bool
394
Geert Uytterhoeven9f1f1182012-06-06 19:37:52 +0200395config CPU_HAS_NO_UNALIGNED
396 bool
397
Geert Uytterhoeven022613e2012-06-06 17:26:35 +0200398config CPU_HAS_ADDRESS_SPACES
399 bool
400
Greg Ungerer0e152d82011-06-20 15:49:09 +1000401config FPU
402 bool
403
404config COLDFIRE_SW_A7
405 bool
406
407config HAVE_CACHE_SPLIT
408 bool
409
410config HAVE_CACHE_CB
411 bool
412
413config HAVE_MBAR
414 bool
415
416config HAVE_IPSBAR
417 bool
418
419config CLOCK_SET
420 bool "Enable setting the CPU clock frequency"
421 depends on COLDFIRE
422 default n
423 help
424 On some CPU's you do not need to know what the core CPU clock
425 frequency is. On these you can disable clock setting. On some
426 traditional 68K parts, and on all ColdFire parts you need to set
427 the appropriate CPU clock frequency. On these devices many of the
428 onboard peripherals derive their timing from the master CPU clock
429 frequency.
430
431config CLOCK_FREQ
432 int "Set the core clock frequency"
433 default "66666666"
434 depends on CLOCK_SET
435 help
436 Define the CPU clock frequency in use. This is the core clock
437 frequency, it may or may not be the same as the external clock
438 crystal fitted to your board. Some processors have an internal
439 PLL and can have their frequency programmed at run time, others
440 use internal dividers. In general the kernel won't setup a PLL
441 if it is fitted (there are some exceptions). This value will be
442 specific to the exact CPU that you are using.
443
444config OLDMASK
445 bool "Old mask 5307 (1H55J) silicon"
446 depends on M5307
447 help
448 Build support for the older revision ColdFire 5307 silicon.
449 Specifically this is the 1H55J mask revision.
450
451if HAVE_CACHE_SPLIT
452choice
453 prompt "Split Cache Configuration"
454 default CACHE_I
455
456config CACHE_I
457 bool "Instruction"
458 help
459 Use all of the ColdFire CPU cache memory as an instruction cache.
460
461config CACHE_D
462 bool "Data"
463 help
464 Use all of the ColdFire CPU cache memory as a data cache.
465
466config CACHE_BOTH
467 bool "Both"
468 help
469 Split the ColdFire CPU cache, and use half as an instruction cache
470 and half as a data cache.
471endchoice
472endif
473
474if HAVE_CACHE_CB
475choice
476 prompt "Data cache mode"
477 default CACHE_WRITETHRU
478
479config CACHE_WRITETHRU
480 bool "Write-through"
481 help
482 The ColdFire CPU cache is set into Write-through mode.
483
484config CACHE_COPYBACK
485 bool "Copy-back"
486 help
487 The ColdFire CPU cache is set into Copy-back mode.
488endchoice
489endif
490