Commit | Line | Data |
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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 | |
31 | ||
32 | endchoice | |
33 | ||
34 | if M68KCLASSIC | |
35 | ||
0e152d80 GU |
36 | config M68000 |
37 | bool | |
38 | select CPU_HAS_NO_BITFIELDS | |
84f3fb7a | 39 | select CPU_HAS_NO_MULDIV64 |
7f73bafc | 40 | select GENERIC_CSUM |
0e152d80 GU |
41 | help |
42 | The Freescale (was Motorola) 68000 CPU is the first generation of | |
43 | the well known M68K family of processors. The CPU core as well as | |
44 | being available as a stand alone CPU was also used in many | |
45 | System-On-Chip devices (eg 68328, 68302, etc). It does not contain | |
46 | a paging MMU. | |
47 | ||
48 | config MCPU32 | |
49 | bool | |
50 | select CPU_HAS_NO_BITFIELDS | |
51 | help | |
52 | The Freescale (was then Motorola) CPU32 is a CPU core that is | |
53 | based on the 68020 processor. For the most part it is used in | |
54 | System-On-Chip parts, and does not contain a paging MMU. | |
55 | ||
0e152d80 GU |
56 | config M68020 |
57 | bool "68020 support" | |
58 | depends on MMU | |
5717a02b | 59 | select GENERIC_ATOMIC64 |
e08d703c | 60 | select CPU_HAS_ADDRESS_SPACES |
0e152d80 GU |
61 | help |
62 | If you anticipate running this kernel on a computer with a MC68020 | |
63 | processor, say Y. Otherwise, say N. Note that the 68020 requires a | |
64 | 68851 MMU (Memory Management Unit) to run Linux/m68k, except on the | |
65 | Sun 3, which provides its own version. | |
66 | ||
67 | config M68030 | |
68 | bool "68030 support" | |
69 | depends on MMU && !MMU_SUN3 | |
5717a02b | 70 | select GENERIC_ATOMIC64 |
e08d703c | 71 | select CPU_HAS_ADDRESS_SPACES |
0e152d80 GU |
72 | help |
73 | If you anticipate running this kernel on a computer with a MC68030 | |
74 | processor, say Y. Otherwise, say N. Note that a MC68EC030 will not | |
75 | work, as it does not include an MMU (Memory Management Unit). | |
76 | ||
77 | config M68040 | |
78 | bool "68040 support" | |
79 | depends on MMU && !MMU_SUN3 | |
5717a02b | 80 | select GENERIC_ATOMIC64 |
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 | |
5717a02b | 91 | select GENERIC_ATOMIC64 |
e08d703c | 92 | select CPU_HAS_ADDRESS_SPACES |
0e152d80 GU |
93 | help |
94 | If you anticipate running this kernel on a computer with a MC68060 | |
95 | processor, say Y. Otherwise, say N. | |
96 | ||
97 | config M68328 | |
98 | bool "MC68328" | |
99 | depends on !MMU | |
100 | select M68000 | |
101 | help | |
102 | Motorola 68328 processor support. | |
103 | ||
104 | config M68EZ328 | |
105 | bool "MC68EZ328" | |
106 | depends on !MMU | |
107 | select M68000 | |
108 | help | |
109 | Motorola 68EX328 processor support. | |
110 | ||
111 | config M68VZ328 | |
112 | bool "MC68VZ328" | |
113 | depends on !MMU | |
114 | select M68000 | |
115 | help | |
116 | Motorola 68VZ328 processor support. | |
117 | ||
118 | config M68360 | |
119 | bool "MC68360" | |
120 | depends on !MMU | |
121 | select MCPU32 | |
122 | help | |
123 | Motorola 68360 processor support. | |
124 | ||
ad8f955d GU |
125 | endif # M68KCLASSIC |
126 | ||
127 | if COLDFIRE | |
128 | ||
0e152d80 GU |
129 | config M5206 |
130 | bool "MCF5206" | |
131 | depends on !MMU | |
0e152d80 GU |
132 | select COLDFIRE_SW_A7 |
133 | select HAVE_MBAR | |
134 | help | |
135 | Motorola ColdFire 5206 processor support. | |
136 | ||
137 | config M5206e | |
138 | bool "MCF5206e" | |
139 | depends on !MMU | |
0e152d80 GU |
140 | select COLDFIRE_SW_A7 |
141 | select HAVE_MBAR | |
142 | help | |
143 | Motorola ColdFire 5206e processor support. | |
144 | ||
145 | config M520x | |
146 | bool "MCF520x" | |
147 | depends on !MMU | |
0e152d80 GU |
148 | select GENERIC_CLOCKEVENTS |
149 | select HAVE_CACHE_SPLIT | |
150 | help | |
151 | Freescale Coldfire 5207/5208 processor support. | |
152 | ||
153 | config M523x | |
154 | bool "MCF523x" | |
155 | depends on !MMU | |
0e152d80 GU |
156 | select GENERIC_CLOCKEVENTS |
157 | select HAVE_CACHE_SPLIT | |
158 | select HAVE_IPSBAR | |
159 | help | |
160 | Freescale Coldfire 5230/1/2/4/5 processor support | |
161 | ||
162 | config M5249 | |
163 | bool "MCF5249" | |
164 | depends on !MMU | |
0e152d80 GU |
165 | select COLDFIRE_SW_A7 |
166 | select HAVE_MBAR | |
167 | help | |
168 | Motorola ColdFire 5249 processor support. | |
169 | ||
04e037aa SK |
170 | config M525x |
171 | bool "MCF525x" | |
172 | depends on !MMU | |
173 | select COLDFIRE_SW_A7 | |
174 | select HAVE_MBAR | |
175 | help | |
176 | Freescale (Motorola) Coldfire 5251/5253 processor support. | |
177 | ||
0e152d80 GU |
178 | config M527x |
179 | bool | |
180 | ||
181 | config M5271 | |
182 | bool "MCF5271" | |
183 | depends on !MMU | |
0e152d80 GU |
184 | select M527x |
185 | select HAVE_CACHE_SPLIT | |
186 | select HAVE_IPSBAR | |
187 | select GENERIC_CLOCKEVENTS | |
188 | help | |
189 | Freescale (Motorola) ColdFire 5270/5271 processor support. | |
190 | ||
191 | config M5272 | |
192 | bool "MCF5272" | |
193 | depends on !MMU | |
0e152d80 GU |
194 | select COLDFIRE_SW_A7 |
195 | select HAVE_MBAR | |
196 | help | |
197 | Motorola ColdFire 5272 processor support. | |
198 | ||
199 | config M5275 | |
200 | bool "MCF5275" | |
201 | depends on !MMU | |
0e152d80 GU |
202 | select M527x |
203 | select HAVE_CACHE_SPLIT | |
204 | select HAVE_IPSBAR | |
205 | select GENERIC_CLOCKEVENTS | |
206 | help | |
207 | Freescale (Motorola) ColdFire 5274/5275 processor support. | |
208 | ||
209 | config M528x | |
210 | bool "MCF528x" | |
211 | depends on !MMU | |
0e152d80 GU |
212 | select GENERIC_CLOCKEVENTS |
213 | select HAVE_CACHE_SPLIT | |
214 | select HAVE_IPSBAR | |
215 | help | |
216 | Motorola ColdFire 5280/5282 processor support. | |
217 | ||
218 | config M5307 | |
219 | bool "MCF5307" | |
220 | depends on !MMU | |
0e152d80 GU |
221 | select COLDFIRE_SW_A7 |
222 | select HAVE_CACHE_CB | |
223 | select HAVE_MBAR | |
224 | help | |
225 | Motorola ColdFire 5307 processor support. | |
226 | ||
227 | config M532x | |
228 | bool "MCF532x" | |
229 | depends on !MMU | |
0e152d80 GU |
230 | select HAVE_CACHE_CB |
231 | help | |
232 | Freescale (Motorola) ColdFire 532x processor support. | |
233 | ||
234 | config M5407 | |
235 | bool "MCF5407" | |
236 | depends on !MMU | |
0e152d80 GU |
237 | select COLDFIRE_SW_A7 |
238 | select HAVE_CACHE_CB | |
239 | select HAVE_MBAR | |
240 | help | |
241 | Motorola ColdFire 5407 processor support. | |
242 | ||
243 | config M54xx | |
244 | bool | |
245 | ||
246 | config M547x | |
247 | bool "MCF547x" | |
0e152d80 | 248 | select M54xx |
1f7034b9 | 249 | select MMU_COLDFIRE if MMU |
0e152d80 GU |
250 | select HAVE_CACHE_CB |
251 | select HAVE_MBAR | |
252 | help | |
253 | Freescale ColdFire 5470/5471/5472/5473/5474/5475 processor support. | |
254 | ||
255 | config M548x | |
256 | bool "MCF548x" | |
1f7034b9 | 257 | select MMU_COLDFIRE if MMU |
0e152d80 GU |
258 | select M54xx |
259 | select HAVE_CACHE_CB | |
260 | select HAVE_MBAR | |
261 | help | |
262 | Freescale ColdFire 5480/5481/5482/5483/5484/5485 processor support. | |
263 | ||
bea8bcb1 SK |
264 | config M5441x |
265 | bool "MCF5441x" | |
266 | depends on !MMU | |
267 | select GENERIC_CLOCKEVENTS | |
268 | select HAVE_CACHE_CB | |
269 | help | |
270 | Freescale Coldfire 54410/54415/54416/54417/54418 processor support. | |
271 | ||
ad8f955d GU |
272 | endif # COLDFIRE |
273 | ||
0e152d80 GU |
274 | |
275 | comment "Processor Specific Options" | |
276 | ||
277 | config M68KFPU_EMU | |
278 | bool "Math emulation support (EXPERIMENTAL)" | |
279 | depends on MMU | |
280 | depends on EXPERIMENTAL | |
281 | help | |
282 | At some point in the future, this will cause floating-point math | |
283 | instructions to be emulated by the kernel on machines that lack a | |
284 | floating-point math coprocessor. Thrill-seekers and chronically | |
285 | sleep-deprived psychotic hacker types can say Y now, everyone else | |
286 | should probably wait a while. | |
287 | ||
288 | config M68KFPU_EMU_EXTRAPREC | |
289 | bool "Math emulation extra precision" | |
290 | depends on M68KFPU_EMU | |
291 | help | |
292 | The fpu uses normally a few bit more during calculations for | |
293 | correct rounding, the emulator can (often) do the same but this | |
294 | extra calculation can cost quite some time, so you can disable | |
295 | it here. The emulator will then "only" calculate with a 64 bit | |
296 | mantissa and round slightly incorrect, what is more than enough | |
297 | for normal usage. | |
298 | ||
299 | config M68KFPU_EMU_ONLY | |
300 | bool "Math emulation only kernel" | |
301 | depends on M68KFPU_EMU | |
302 | help | |
303 | This option prevents any floating-point instructions from being | |
304 | compiled into the kernel, thereby the kernel doesn't save any | |
305 | floating point context anymore during task switches, so this | |
306 | kernel will only be usable on machines without a floating-point | |
307 | math coprocessor. This makes the kernel a bit faster as no tests | |
308 | needs to be executed whether a floating-point instruction in the | |
309 | kernel should be executed or not. | |
310 | ||
311 | config ADVANCED | |
312 | bool "Advanced configuration options" | |
313 | depends on MMU | |
314 | ---help--- | |
315 | This gives you access to some advanced options for the CPU. The | |
316 | defaults should be fine for most users, but these options may make | |
317 | it possible for you to improve performance somewhat if you know what | |
318 | you are doing. | |
319 | ||
320 | Note that the answer to this question won't directly affect the | |
321 | kernel: saying N will just cause the configurator to skip all | |
322 | the questions about these options. | |
323 | ||
324 | Most users should say N to this question. | |
325 | ||
326 | config RMW_INSNS | |
327 | bool "Use read-modify-write instructions" | |
328 | depends on ADVANCED | |
329 | ---help--- | |
330 | This allows to use certain instructions that work with indivisible | |
331 | read-modify-write bus cycles. While this is faster than the | |
332 | workaround of disabling interrupts, it can conflict with DMA | |
333 | ( = direct memory access) on many Amiga systems, and it is also said | |
334 | to destabilize other machines. It is very likely that this will | |
335 | cause serious problems on any Amiga or Atari Medusa if set. The only | |
336 | configuration where it should work are 68030-based Ataris, where it | |
337 | apparently improves performance. But you've been warned! Unless you | |
338 | really know what you are doing, say N. Try Y only if you're quite | |
339 | adventurous. | |
340 | ||
341 | config SINGLE_MEMORY_CHUNK | |
342 | bool "Use one physical chunk of memory only" if ADVANCED && !SUN3 | |
343 | depends on MMU | |
344 | default y if SUN3 | |
345 | select NEED_MULTIPLE_NODES | |
346 | help | |
347 | Ignore all but the first contiguous chunk of physical memory for VM | |
348 | purposes. This will save a few bytes kernel size and may speed up | |
349 | some operations. Say N if not sure. | |
350 | ||
351 | config ARCH_DISCONTIGMEM_ENABLE | |
352 | def_bool MMU && !SINGLE_MEMORY_CHUNK | |
353 | ||
354 | config 060_WRITETHROUGH | |
355 | bool "Use write-through caching for 68060 supervisor accesses" | |
356 | depends on ADVANCED && M68060 | |
357 | ---help--- | |
358 | The 68060 generally uses copyback caching of recently accessed data. | |
359 | Copyback caching means that memory writes will be held in an on-chip | |
360 | cache and only written back to memory some time later. Saying Y | |
361 | here will force supervisor (kernel) accesses to use writethrough | |
362 | caching. Writethrough caching means that data is written to memory | |
363 | straight away, so that cache and memory data always agree. | |
364 | Writethrough caching is less efficient, but is needed for some | |
365 | drivers on 68060 based systems where the 68060 bus snooping signal | |
366 | is hardwired on. The 53c710 SCSI driver is known to suffer from | |
367 | this problem. | |
368 | ||
369 | config M68K_L2_CACHE | |
370 | bool | |
371 | depends on MAC | |
372 | default y | |
373 | ||
374 | config NODES_SHIFT | |
375 | int | |
376 | default "3" | |
377 | depends on !SINGLE_MEMORY_CHUNK | |
378 | ||
379 | config FPU | |
380 | bool | |
381 | ||
382 | config COLDFIRE_SW_A7 | |
383 | bool | |
384 | ||
385 | config HAVE_CACHE_SPLIT | |
386 | bool | |
387 | ||
388 | config HAVE_CACHE_CB | |
389 | bool | |
390 | ||
391 | config HAVE_MBAR | |
392 | bool | |
393 | ||
394 | config HAVE_IPSBAR | |
395 | bool | |
396 | ||
397 | config CLOCK_SET | |
398 | bool "Enable setting the CPU clock frequency" | |
399 | depends on COLDFIRE | |
400 | default n | |
401 | help | |
402 | On some CPU's you do not need to know what the core CPU clock | |
403 | frequency is. On these you can disable clock setting. On some | |
404 | traditional 68K parts, and on all ColdFire parts you need to set | |
405 | the appropriate CPU clock frequency. On these devices many of the | |
406 | onboard peripherals derive their timing from the master CPU clock | |
407 | frequency. | |
408 | ||
409 | config CLOCK_FREQ | |
410 | int "Set the core clock frequency" | |
411 | default "66666666" | |
412 | depends on CLOCK_SET | |
413 | help | |
414 | Define the CPU clock frequency in use. This is the core clock | |
415 | frequency, it may or may not be the same as the external clock | |
416 | crystal fitted to your board. Some processors have an internal | |
417 | PLL and can have their frequency programmed at run time, others | |
418 | use internal dividers. In general the kernel won't setup a PLL | |
419 | if it is fitted (there are some exceptions). This value will be | |
420 | specific to the exact CPU that you are using. | |
421 | ||
422 | config OLDMASK | |
423 | bool "Old mask 5307 (1H55J) silicon" | |
424 | depends on M5307 | |
425 | help | |
426 | Build support for the older revision ColdFire 5307 silicon. | |
427 | Specifically this is the 1H55J mask revision. | |
428 | ||
429 | if HAVE_CACHE_SPLIT | |
430 | choice | |
431 | prompt "Split Cache Configuration" | |
432 | default CACHE_I | |
433 | ||
434 | config CACHE_I | |
435 | bool "Instruction" | |
436 | help | |
437 | Use all of the ColdFire CPU cache memory as an instruction cache. | |
438 | ||
439 | config CACHE_D | |
440 | bool "Data" | |
441 | help | |
442 | Use all of the ColdFire CPU cache memory as a data cache. | |
443 | ||
444 | config CACHE_BOTH | |
445 | bool "Both" | |
446 | help | |
447 | Split the ColdFire CPU cache, and use half as an instruction cache | |
448 | and half as a data cache. | |
449 | endchoice | |
450 | endif | |
451 | ||
452 | if HAVE_CACHE_CB | |
453 | choice | |
454 | prompt "Data cache mode" | |
455 | default CACHE_WRITETHRU | |
456 | ||
457 | config CACHE_WRITETHRU | |
458 | bool "Write-through" | |
459 | help | |
460 | The ColdFire CPU cache is set into Write-through mode. | |
461 | ||
462 | config CACHE_COPYBACK | |
463 | bool "Copy-back" | |
464 | help | |
465 | The ColdFire CPU cache is set into Copy-back mode. | |
466 | endchoice | |
467 | endif | |
468 |