blob: c496d48a8c8d07f9c27cb2bf799a3f078b5c1674 [file] [log] [blame]
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 Ungererfa95a1d2015-07-07 15:44:02 +1000128choice
129 prompt "ColdFire SoC type"
130 default M520x
131 help
132 Select the type of ColdFire System-on-Chip (SoC) that you want
133 to build for.
134
Greg Ungerer0e152d82011-06-20 15:49:09 +1000135config M5206
136 bool "MCF5206"
137 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000138 select COLDFIRE_SW_A7
139 select HAVE_MBAR
140 help
141 Motorola ColdFire 5206 processor support.
142
143config M5206e
144 bool "MCF5206e"
145 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000146 select COLDFIRE_SW_A7
147 select HAVE_MBAR
148 help
149 Motorola ColdFire 5206e processor support.
150
151config M520x
152 bool "MCF520x"
153 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000154 select GENERIC_CLOCKEVENTS
155 select HAVE_CACHE_SPLIT
156 help
157 Freescale Coldfire 5207/5208 processor support.
158
159config M523x
160 bool "MCF523x"
161 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000162 select GENERIC_CLOCKEVENTS
163 select HAVE_CACHE_SPLIT
164 select HAVE_IPSBAR
165 help
166 Freescale Coldfire 5230/1/2/4/5 processor support
167
168config M5249
169 bool "MCF5249"
170 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000171 select COLDFIRE_SW_A7
172 select HAVE_MBAR
173 help
174 Motorola ColdFire 5249 processor support.
175
Steven King04e037a2012-06-05 08:23:08 -0700176config M525x
177 bool "MCF525x"
178 depends on !MMU
179 select COLDFIRE_SW_A7
180 select HAVE_MBAR
181 help
182 Freescale (Motorola) Coldfire 5251/5253 processor support.
183
Greg Ungerer0e152d82011-06-20 15:49:09 +1000184config M5271
185 bool "MCF5271"
186 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000187 select M527x
188 select HAVE_CACHE_SPLIT
189 select HAVE_IPSBAR
190 select GENERIC_CLOCKEVENTS
191 help
192 Freescale (Motorola) ColdFire 5270/5271 processor support.
193
194config M5272
195 bool "MCF5272"
196 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000197 select COLDFIRE_SW_A7
198 select HAVE_MBAR
199 help
200 Motorola ColdFire 5272 processor support.
201
202config M5275
203 bool "MCF5275"
204 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000205 select M527x
206 select HAVE_CACHE_SPLIT
207 select HAVE_IPSBAR
208 select GENERIC_CLOCKEVENTS
209 help
210 Freescale (Motorola) ColdFire 5274/5275 processor support.
211
212config M528x
213 bool "MCF528x"
214 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000215 select GENERIC_CLOCKEVENTS
216 select HAVE_CACHE_SPLIT
217 select HAVE_IPSBAR
218 help
219 Motorola ColdFire 5280/5282 processor support.
220
221config M5307
222 bool "MCF5307"
223 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000224 select COLDFIRE_SW_A7
225 select HAVE_CACHE_CB
226 select HAVE_MBAR
227 help
228 Motorola ColdFire 5307 processor support.
229
230config M532x
231 bool "MCF532x"
232 depends on !MMU
Greg Ungerer6eac4022012-11-05 12:01:38 +1000233 select M53xx
Greg Ungerer0e152d82011-06-20 15:49:09 +1000234 select HAVE_CACHE_CB
235 help
236 Freescale (Motorola) ColdFire 532x processor support.
237
Greg Ungerere9d9dc62012-11-05 15:32:15 +1000238config M537x
239 bool "MCF537x"
240 depends on !MMU
241 select M53xx
242 select HAVE_CACHE_CB
243 help
244 Freescale ColdFire 537x processor support.
245
Greg Ungerer0e152d82011-06-20 15:49:09 +1000246config M5407
247 bool "MCF5407"
248 depends on !MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000249 select COLDFIRE_SW_A7
250 select HAVE_CACHE_CB
251 select HAVE_MBAR
252 help
253 Motorola ColdFire 5407 processor support.
254
Greg Ungerer0e152d82011-06-20 15:49:09 +1000255config M547x
256 bool "MCF547x"
Greg Ungerer0e152d82011-06-20 15:49:09 +1000257 select M54xx
Greg Ungerer1f7034b2011-10-19 14:13:18 +1000258 select MMU_COLDFIRE if MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000259 select HAVE_CACHE_CB
260 select HAVE_MBAR
261 help
262 Freescale ColdFire 5470/5471/5472/5473/5474/5475 processor support.
263
264config M548x
265 bool "MCF548x"
Greg Ungerer1f7034b2011-10-19 14:13:18 +1000266 select MMU_COLDFIRE if MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000267 select M54xx
268 select HAVE_CACHE_CB
269 select HAVE_MBAR
270 help
271 Freescale ColdFire 5480/5481/5482/5483/5484/5485 processor support.
272
Steven Kingbea8bcb2012-06-06 14:28:31 -0700273config M5441x
274 bool "MCF5441x"
275 depends on !MMU
276 select GENERIC_CLOCKEVENTS
277 select HAVE_CACHE_CB
278 help
279 Freescale Coldfire 54410/54415/54416/54417/54418 processor support.
280
Greg Ungererfa95a1d2015-07-07 15:44:02 +1000281endchoice
282
283config M527x
284 bool
285
286config M53xx
287 bool
288
289config M54xx
290 bool
291
Geert Uytterhoevenad8f9552011-12-26 20:32:02 +0100292endif # COLDFIRE
293
Greg Ungerer0e152d82011-06-20 15:49:09 +1000294
295comment "Processor Specific Options"
296
297config M68KFPU_EMU
Kees Cook112f8b12012-10-23 13:01:27 -0700298 bool "Math emulation support"
Greg Ungerer0e152d82011-06-20 15:49:09 +1000299 depends on MMU
Greg Ungerer0e152d82011-06-20 15:49:09 +1000300 help
301 At some point in the future, this will cause floating-point math
302 instructions to be emulated by the kernel on machines that lack a
303 floating-point math coprocessor. Thrill-seekers and chronically
304 sleep-deprived psychotic hacker types can say Y now, everyone else
305 should probably wait a while.
306
307config M68KFPU_EMU_EXTRAPREC
308 bool "Math emulation extra precision"
309 depends on M68KFPU_EMU
310 help
311 The fpu uses normally a few bit more during calculations for
312 correct rounding, the emulator can (often) do the same but this
313 extra calculation can cost quite some time, so you can disable
314 it here. The emulator will then "only" calculate with a 64 bit
315 mantissa and round slightly incorrect, what is more than enough
316 for normal usage.
317
318config M68KFPU_EMU_ONLY
319 bool "Math emulation only kernel"
320 depends on M68KFPU_EMU
321 help
322 This option prevents any floating-point instructions from being
323 compiled into the kernel, thereby the kernel doesn't save any
324 floating point context anymore during task switches, so this
325 kernel will only be usable on machines without a floating-point
326 math coprocessor. This makes the kernel a bit faster as no tests
327 needs to be executed whether a floating-point instruction in the
328 kernel should be executed or not.
329
330config ADVANCED
331 bool "Advanced configuration options"
332 depends on MMU
333 ---help---
334 This gives you access to some advanced options for the CPU. The
335 defaults should be fine for most users, but these options may make
336 it possible for you to improve performance somewhat if you know what
337 you are doing.
338
339 Note that the answer to this question won't directly affect the
340 kernel: saying N will just cause the configurator to skip all
341 the questions about these options.
342
343 Most users should say N to this question.
344
345config RMW_INSNS
346 bool "Use read-modify-write instructions"
347 depends on ADVANCED
348 ---help---
349 This allows to use certain instructions that work with indivisible
350 read-modify-write bus cycles. While this is faster than the
351 workaround of disabling interrupts, it can conflict with DMA
352 ( = direct memory access) on many Amiga systems, and it is also said
353 to destabilize other machines. It is very likely that this will
354 cause serious problems on any Amiga or Atari Medusa if set. The only
355 configuration where it should work are 68030-based Ataris, where it
356 apparently improves performance. But you've been warned! Unless you
357 really know what you are doing, say N. Try Y only if you're quite
358 adventurous.
359
360config SINGLE_MEMORY_CHUNK
361 bool "Use one physical chunk of memory only" if ADVANCED && !SUN3
362 depends on MMU
363 default y if SUN3
364 select NEED_MULTIPLE_NODES
365 help
366 Ignore all but the first contiguous chunk of physical memory for VM
367 purposes. This will save a few bytes kernel size and may speed up
368 some operations. Say N if not sure.
369
370config ARCH_DISCONTIGMEM_ENABLE
371 def_bool MMU && !SINGLE_MEMORY_CHUNK
372
373config 060_WRITETHROUGH
374 bool "Use write-through caching for 68060 supervisor accesses"
375 depends on ADVANCED && M68060
376 ---help---
377 The 68060 generally uses copyback caching of recently accessed data.
378 Copyback caching means that memory writes will be held in an on-chip
379 cache and only written back to memory some time later. Saying Y
380 here will force supervisor (kernel) accesses to use writethrough
381 caching. Writethrough caching means that data is written to memory
382 straight away, so that cache and memory data always agree.
383 Writethrough caching is less efficient, but is needed for some
384 drivers on 68060 based systems where the 68060 bus snooping signal
385 is hardwired on. The 53c710 SCSI driver is known to suffer from
386 this problem.
387
388config M68K_L2_CACHE
389 bool
390 depends on MAC
391 default y
392
393config NODES_SHIFT
394 int
395 default "3"
396 depends on !SINGLE_MEMORY_CHUNK
397
Geert Uytterhoeven022613e2012-06-06 17:26:35 +0200398config CPU_HAS_NO_BITFIELDS
399 bool
400
401config CPU_HAS_NO_MULDIV64
402 bool
403
Geert Uytterhoeven9f1f1182012-06-06 19:37:52 +0200404config CPU_HAS_NO_UNALIGNED
405 bool
406
Geert Uytterhoeven022613e2012-06-06 17:26:35 +0200407config CPU_HAS_ADDRESS_SPACES
408 bool
409
Greg Ungerer0e152d82011-06-20 15:49:09 +1000410config FPU
411 bool
412
413config COLDFIRE_SW_A7
414 bool
415
416config HAVE_CACHE_SPLIT
417 bool
418
419config HAVE_CACHE_CB
420 bool
421
422config HAVE_MBAR
423 bool
424
425config HAVE_IPSBAR
426 bool
427
Greg Ungerer0e152d82011-06-20 15:49:09 +1000428config CLOCK_FREQ
429 int "Set the core clock frequency"
Greg Ungerer15c2ca42015-07-07 15:01:53 +1000430 default "25000000" if M5206
431 default "54000000" if M5206e
432 default "166666666" if M520x
433 default "140000000" if M5249
434 default "150000000" if M527x || M523x
435 default "90000000" if M5307
436 default "50000000" if M5407
437 default "266000000" if M54xx
Greg Ungerer0e152d82011-06-20 15:49:09 +1000438 default "66666666"
Greg Ungererd9ee4892015-07-07 14:21:21 +1000439 depends on COLDFIRE
Greg Ungerer0e152d82011-06-20 15:49:09 +1000440 help
441 Define the CPU clock frequency in use. This is the core clock
442 frequency, it may or may not be the same as the external clock
443 crystal fitted to your board. Some processors have an internal
444 PLL and can have their frequency programmed at run time, others
445 use internal dividers. In general the kernel won't setup a PLL
446 if it is fitted (there are some exceptions). This value will be
447 specific to the exact CPU that you are using.
448
449config OLDMASK
450 bool "Old mask 5307 (1H55J) silicon"
451 depends on M5307
452 help
453 Build support for the older revision ColdFire 5307 silicon.
454 Specifically this is the 1H55J mask revision.
455
456if HAVE_CACHE_SPLIT
457choice
458 prompt "Split Cache Configuration"
459 default CACHE_I
460
461config CACHE_I
462 bool "Instruction"
463 help
464 Use all of the ColdFire CPU cache memory as an instruction cache.
465
466config CACHE_D
467 bool "Data"
468 help
469 Use all of the ColdFire CPU cache memory as a data cache.
470
471config CACHE_BOTH
472 bool "Both"
473 help
474 Split the ColdFire CPU cache, and use half as an instruction cache
475 and half as a data cache.
476endchoice
477endif
478
479if HAVE_CACHE_CB
480choice
481 prompt "Data cache mode"
482 default CACHE_WRITETHRU
483
484config CACHE_WRITETHRU
485 bool "Write-through"
486 help
487 The ColdFire CPU cache is set into Write-through mode.
488
489config CACHE_COPYBACK
490 bool "Copy-back"
491 help
492 The ColdFire CPU cache is set into Copy-back mode.
493endchoice
494endif
495