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0e152d80 GU |
1 | comment "Processor Type" |
2 | ||
ad8f955d GU |
3 | choice |
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. | |
6b2aac42 | 10 | The Freescale ColdFire family of processors is a modern derivative |
ad8f955d GU |
11 | 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 | ||
20 | config M68KCLASSIC | |
21 | bool "Classic M68K CPU family support" | |
22 | ||
23 | config COLDFIRE | |
24 | bool "Coldfire CPU family support" | |
25 | select GENERIC_GPIO | |
eac57949 | 26 | select ARCH_WANT_OPTIONAL_GPIOLIB |
7563bbf8 | 27 | select ARCH_HAVE_CUSTOM_GPIO_H |
ad8f955d GU |
28 | select CPU_HAS_NO_BITFIELDS |
29 | select CPU_HAS_NO_MULDIV64 | |
30 | select GENERIC_CSUM | |
e7d6582e | 31 | select HAVE_CLK |
ad8f955d GU |
32 | |
33 | endchoice | |
34 | ||
35 | if M68KCLASSIC | |
36 | ||
0e152d80 GU |
37 | config M68000 |
38 | bool | |
39 | select CPU_HAS_NO_BITFIELDS | |
84f3fb7a | 40 | select CPU_HAS_NO_MULDIV64 |
9f1f1180 | 41 | select CPU_HAS_NO_UNALIGNED |
7f73bafc | 42 | select GENERIC_CSUM |
0e152d80 GU |
43 | 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 | ||
50 | config MCPU32 | |
51 | bool | |
52 | select CPU_HAS_NO_BITFIELDS | |
7df0d27f | 53 | select CPU_HAS_NO_UNALIGNED |
0e152d80 GU |
54 | 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 | ||
0e152d80 GU |
59 | config M68020 |
60 | bool "68020 support" | |
61 | depends on MMU | |
e08d703c | 62 | select CPU_HAS_ADDRESS_SPACES |
0e152d80 GU |
63 | 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 | ||
69 | config M68030 | |
70 | bool "68030 support" | |
71 | depends on MMU && !MMU_SUN3 | |
e08d703c | 72 | select CPU_HAS_ADDRESS_SPACES |
0e152d80 GU |
73 | 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 | ||
78 | config M68040 | |
79 | bool "68040 support" | |
80 | depends on MMU && !MMU_SUN3 | |
e08d703c | 81 | select CPU_HAS_ADDRESS_SPACES |
0e152d80 GU |
82 | 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 | ||
88 | config M68060 | |
89 | bool "68060 support" | |
90 | depends on MMU && !MMU_SUN3 | |
e08d703c | 91 | select CPU_HAS_ADDRESS_SPACES |
0e152d80 GU |
92 | help |
93 | If you anticipate running this kernel on a computer with a MC68060 | |
94 | processor, say Y. Otherwise, say N. | |
95 | ||
96 | config M68328 | |
97 | bool "MC68328" | |
98 | depends on !MMU | |
99 | select M68000 | |
100 | help | |
101 | Motorola 68328 processor support. | |
102 | ||
103 | config M68EZ328 | |
104 | bool "MC68EZ328" | |
105 | depends on !MMU | |
106 | select M68000 | |
107 | help | |
108 | Motorola 68EX328 processor support. | |
109 | ||
110 | config M68VZ328 | |
111 | bool "MC68VZ328" | |
112 | depends on !MMU | |
113 | select M68000 | |
114 | help | |
115 | Motorola 68VZ328 processor support. | |
116 | ||
117 | config M68360 | |
118 | bool "MC68360" | |
119 | depends on !MMU | |
120 | select MCPU32 | |
121 | help | |
122 | Motorola 68360 processor support. | |
123 | ||
ad8f955d GU |
124 | endif # M68KCLASSIC |
125 | ||
126 | if COLDFIRE | |
127 | ||
0e152d80 GU |
128 | config M5206 |
129 | bool "MCF5206" | |
130 | depends on !MMU | |
0e152d80 GU |
131 | select COLDFIRE_SW_A7 |
132 | select HAVE_MBAR | |
133 | help | |
134 | Motorola ColdFire 5206 processor support. | |
135 | ||
136 | config M5206e | |
137 | bool "MCF5206e" | |
138 | depends on !MMU | |
0e152d80 GU |
139 | select COLDFIRE_SW_A7 |
140 | select HAVE_MBAR | |
141 | help | |
142 | Motorola ColdFire 5206e processor support. | |
143 | ||
144 | config M520x | |
145 | bool "MCF520x" | |
146 | depends on !MMU | |
0e152d80 GU |
147 | select GENERIC_CLOCKEVENTS |
148 | select HAVE_CACHE_SPLIT | |
149 | help | |
150 | Freescale Coldfire 5207/5208 processor support. | |
151 | ||
152 | config M523x | |
153 | bool "MCF523x" | |
154 | depends on !MMU | |
0e152d80 GU |
155 | 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 | ||
161 | config M5249 | |
162 | bool "MCF5249" | |
163 | depends on !MMU | |
0e152d80 GU |
164 | select COLDFIRE_SW_A7 |
165 | select HAVE_MBAR | |
166 | help | |
167 | Motorola ColdFire 5249 processor support. | |
168 | ||
04e037aa SK |
169 | config 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 | ||
0e152d80 GU |
177 | config M527x |
178 | bool | |
179 | ||
180 | config M5271 | |
181 | bool "MCF5271" | |
182 | depends on !MMU | |
0e152d80 GU |
183 | 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 | ||
190 | config M5272 | |
191 | bool "MCF5272" | |
192 | depends on !MMU | |
0e152d80 GU |
193 | select COLDFIRE_SW_A7 |
194 | select HAVE_MBAR | |
195 | help | |
196 | Motorola ColdFire 5272 processor support. | |
197 | ||
198 | config M5275 | |
199 | bool "MCF5275" | |
200 | depends on !MMU | |
0e152d80 GU |
201 | 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 | ||
208 | config M528x | |
209 | bool "MCF528x" | |
210 | depends on !MMU | |
0e152d80 GU |
211 | select GENERIC_CLOCKEVENTS |
212 | select HAVE_CACHE_SPLIT | |
213 | select HAVE_IPSBAR | |
214 | help | |
215 | Motorola ColdFire 5280/5282 processor support. | |
216 | ||
217 | config M5307 | |
218 | bool "MCF5307" | |
219 | depends on !MMU | |
0e152d80 GU |
220 | select COLDFIRE_SW_A7 |
221 | select HAVE_CACHE_CB | |
222 | select HAVE_MBAR | |
223 | help | |
224 | Motorola ColdFire 5307 processor support. | |
225 | ||
226 | config M532x | |
227 | bool "MCF532x" | |
228 | depends on !MMU | |
0e152d80 GU |
229 | select HAVE_CACHE_CB |
230 | help | |
231 | Freescale (Motorola) ColdFire 532x processor support. | |
232 | ||
233 | config M5407 | |
234 | bool "MCF5407" | |
235 | depends on !MMU | |
0e152d80 GU |
236 | select COLDFIRE_SW_A7 |
237 | select HAVE_CACHE_CB | |
238 | select HAVE_MBAR | |
239 | help | |
240 | Motorola ColdFire 5407 processor support. | |
241 | ||
242 | config M54xx | |
243 | bool | |
244 | ||
245 | config M547x | |
246 | bool "MCF547x" | |
0e152d80 | 247 | select M54xx |
1f7034b9 | 248 | select MMU_COLDFIRE if MMU |
0e152d80 GU |
249 | select HAVE_CACHE_CB |
250 | select HAVE_MBAR | |
251 | help | |
252 | Freescale ColdFire 5470/5471/5472/5473/5474/5475 processor support. | |
253 | ||
254 | config M548x | |
255 | bool "MCF548x" | |
1f7034b9 | 256 | select MMU_COLDFIRE if MMU |
0e152d80 GU |
257 | select M54xx |
258 | select HAVE_CACHE_CB | |
259 | select HAVE_MBAR | |
260 | help | |
261 | Freescale ColdFire 5480/5481/5482/5483/5484/5485 processor support. | |
262 | ||
bea8bcb1 SK |
263 | config M5441x |
264 | bool "MCF5441x" | |
265 | depends on !MMU | |
266 | select GENERIC_CLOCKEVENTS | |
267 | select HAVE_CACHE_CB | |
268 | help | |
269 | Freescale Coldfire 54410/54415/54416/54417/54418 processor support. | |
270 | ||
ad8f955d GU |
271 | endif # COLDFIRE |
272 | ||
0e152d80 GU |
273 | |
274 | comment "Processor Specific Options" | |
275 | ||
276 | config M68KFPU_EMU | |
112f8b12 | 277 | bool "Math emulation support" |
0e152d80 | 278 | depends on MMU |
0e152d80 GU |
279 | help |
280 | At some point in the future, this will cause floating-point math | |
281 | instructions to be emulated by the kernel on machines that lack a | |
282 | floating-point math coprocessor. Thrill-seekers and chronically | |
283 | sleep-deprived psychotic hacker types can say Y now, everyone else | |
284 | should probably wait a while. | |
285 | ||
286 | config M68KFPU_EMU_EXTRAPREC | |
287 | bool "Math emulation extra precision" | |
288 | depends on M68KFPU_EMU | |
289 | help | |
290 | The fpu uses normally a few bit more during calculations for | |
291 | correct rounding, the emulator can (often) do the same but this | |
292 | extra calculation can cost quite some time, so you can disable | |
293 | it here. The emulator will then "only" calculate with a 64 bit | |
294 | mantissa and round slightly incorrect, what is more than enough | |
295 | for normal usage. | |
296 | ||
297 | config M68KFPU_EMU_ONLY | |
298 | bool "Math emulation only kernel" | |
299 | depends on M68KFPU_EMU | |
300 | help | |
301 | This option prevents any floating-point instructions from being | |
302 | compiled into the kernel, thereby the kernel doesn't save any | |
303 | floating point context anymore during task switches, so this | |
304 | kernel will only be usable on machines without a floating-point | |
305 | math coprocessor. This makes the kernel a bit faster as no tests | |
306 | needs to be executed whether a floating-point instruction in the | |
307 | kernel should be executed or not. | |
308 | ||
309 | config ADVANCED | |
310 | bool "Advanced configuration options" | |
311 | depends on MMU | |
312 | ---help--- | |
313 | This gives you access to some advanced options for the CPU. The | |
314 | defaults should be fine for most users, but these options may make | |
315 | it possible for you to improve performance somewhat if you know what | |
316 | you are doing. | |
317 | ||
318 | Note that the answer to this question won't directly affect the | |
319 | kernel: saying N will just cause the configurator to skip all | |
320 | the questions about these options. | |
321 | ||
322 | Most users should say N to this question. | |
323 | ||
324 | config RMW_INSNS | |
325 | bool "Use read-modify-write instructions" | |
326 | depends on ADVANCED | |
327 | ---help--- | |
328 | This allows to use certain instructions that work with indivisible | |
329 | read-modify-write bus cycles. While this is faster than the | |
330 | workaround of disabling interrupts, it can conflict with DMA | |
331 | ( = direct memory access) on many Amiga systems, and it is also said | |
332 | to destabilize other machines. It is very likely that this will | |
333 | cause serious problems on any Amiga or Atari Medusa if set. The only | |
334 | configuration where it should work are 68030-based Ataris, where it | |
335 | apparently improves performance. But you've been warned! Unless you | |
336 | really know what you are doing, say N. Try Y only if you're quite | |
337 | adventurous. | |
338 | ||
339 | config SINGLE_MEMORY_CHUNK | |
340 | bool "Use one physical chunk of memory only" if ADVANCED && !SUN3 | |
341 | depends on MMU | |
342 | default y if SUN3 | |
343 | select NEED_MULTIPLE_NODES | |
344 | help | |
345 | Ignore all but the first contiguous chunk of physical memory for VM | |
346 | purposes. This will save a few bytes kernel size and may speed up | |
347 | some operations. Say N if not sure. | |
348 | ||
349 | config ARCH_DISCONTIGMEM_ENABLE | |
350 | def_bool MMU && !SINGLE_MEMORY_CHUNK | |
351 | ||
352 | config 060_WRITETHROUGH | |
353 | bool "Use write-through caching for 68060 supervisor accesses" | |
354 | depends on ADVANCED && M68060 | |
355 | ---help--- | |
356 | The 68060 generally uses copyback caching of recently accessed data. | |
357 | Copyback caching means that memory writes will be held in an on-chip | |
358 | cache and only written back to memory some time later. Saying Y | |
359 | here will force supervisor (kernel) accesses to use writethrough | |
360 | caching. Writethrough caching means that data is written to memory | |
361 | straight away, so that cache and memory data always agree. | |
362 | Writethrough caching is less efficient, but is needed for some | |
363 | drivers on 68060 based systems where the 68060 bus snooping signal | |
364 | is hardwired on. The 53c710 SCSI driver is known to suffer from | |
365 | this problem. | |
366 | ||
367 | config M68K_L2_CACHE | |
368 | bool | |
369 | depends on MAC | |
370 | default y | |
371 | ||
372 | config NODES_SHIFT | |
373 | int | |
374 | default "3" | |
375 | depends on !SINGLE_MEMORY_CHUNK | |
376 | ||
022613e0 GU |
377 | config CPU_HAS_NO_BITFIELDS |
378 | bool | |
379 | ||
380 | config CPU_HAS_NO_MULDIV64 | |
381 | bool | |
382 | ||
9f1f1180 GU |
383 | config CPU_HAS_NO_UNALIGNED |
384 | bool | |
385 | ||
022613e0 GU |
386 | config CPU_HAS_ADDRESS_SPACES |
387 | bool | |
388 | ||
0e152d80 GU |
389 | config FPU |
390 | bool | |
391 | ||
392 | config COLDFIRE_SW_A7 | |
393 | bool | |
394 | ||
395 | config HAVE_CACHE_SPLIT | |
396 | bool | |
397 | ||
398 | config HAVE_CACHE_CB | |
399 | bool | |
400 | ||
401 | config HAVE_MBAR | |
402 | bool | |
403 | ||
404 | config HAVE_IPSBAR | |
405 | bool | |
406 | ||
407 | config CLOCK_SET | |
408 | bool "Enable setting the CPU clock frequency" | |
409 | depends on COLDFIRE | |
410 | default n | |
411 | help | |
412 | On some CPU's you do not need to know what the core CPU clock | |
413 | frequency is. On these you can disable clock setting. On some | |
414 | traditional 68K parts, and on all ColdFire parts you need to set | |
415 | the appropriate CPU clock frequency. On these devices many of the | |
416 | onboard peripherals derive their timing from the master CPU clock | |
417 | frequency. | |
418 | ||
419 | config CLOCK_FREQ | |
420 | int "Set the core clock frequency" | |
421 | default "66666666" | |
422 | depends on CLOCK_SET | |
423 | help | |
424 | Define the CPU clock frequency in use. This is the core clock | |
425 | frequency, it may or may not be the same as the external clock | |
426 | crystal fitted to your board. Some processors have an internal | |
427 | PLL and can have their frequency programmed at run time, others | |
428 | use internal dividers. In general the kernel won't setup a PLL | |
429 | if it is fitted (there are some exceptions). This value will be | |
430 | specific to the exact CPU that you are using. | |
431 | ||
432 | config OLDMASK | |
433 | bool "Old mask 5307 (1H55J) silicon" | |
434 | depends on M5307 | |
435 | help | |
436 | Build support for the older revision ColdFire 5307 silicon. | |
437 | Specifically this is the 1H55J mask revision. | |
438 | ||
439 | if HAVE_CACHE_SPLIT | |
440 | choice | |
441 | prompt "Split Cache Configuration" | |
442 | default CACHE_I | |
443 | ||
444 | config CACHE_I | |
445 | bool "Instruction" | |
446 | help | |
447 | Use all of the ColdFire CPU cache memory as an instruction cache. | |
448 | ||
449 | config CACHE_D | |
450 | bool "Data" | |
451 | help | |
452 | Use all of the ColdFire CPU cache memory as a data cache. | |
453 | ||
454 | config CACHE_BOTH | |
455 | bool "Both" | |
456 | help | |
457 | Split the ColdFire CPU cache, and use half as an instruction cache | |
458 | and half as a data cache. | |
459 | endchoice | |
460 | endif | |
461 | ||
462 | if HAVE_CACHE_CB | |
463 | choice | |
464 | prompt "Data cache mode" | |
465 | default CACHE_WRITETHRU | |
466 | ||
467 | config CACHE_WRITETHRU | |
468 | bool "Write-through" | |
469 | help | |
470 | The ColdFire CPU cache is set into Write-through mode. | |
471 | ||
472 | config CACHE_COPYBACK | |
473 | bool "Copy-back" | |
474 | help | |
475 | The ColdFire CPU cache is set into Copy-back mode. | |
476 | endchoice | |
477 | endif | |
478 |