Commit | Line | Data |
---|---|---|
b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
0e152d80 GU |
2 | comment "Processor Type" |
3 | ||
ad8f955d GU |
4 | choice |
5 | prompt "CPU family support" | |
6 | default M68KCLASSIC if MMU | |
7 | default COLDFIRE if !MMU | |
8 | help | |
9 | The Freescale (was Motorola) M68K family of processors implements | |
10 | the full 68000 processor instruction set. | |
6b2aac42 | 11 | The Freescale ColdFire family of processors is a modern derivative |
ad8f955d GU |
12 | of the 68000 processor family. They are mainly targeted at embedded |
13 | applications, and are all System-On-Chip (SOC) devices, as opposed | |
14 | to stand alone CPUs. They implement a subset of the original 68000 | |
15 | processor instruction set. | |
16 | If you anticipate running this kernel on a computer with a classic | |
17 | MC68xxx processor, select M68KCLASSIC. | |
18 | If you anticipate running this kernel on a computer with a ColdFire | |
19 | processor, select COLDFIRE. | |
20 | ||
21 | config M68KCLASSIC | |
22 | bool "Classic M68K CPU family support" | |
fcd353a3 | 23 | select HAVE_ARCH_PFN_VALID |
ad8f955d GU |
24 | |
25 | config COLDFIRE | |
26 | bool "Coldfire CPU family support" | |
7563bbf8 | 27 | select ARCH_HAVE_CUSTOM_GPIO_H |
ad8f955d | 28 | select CPU_HAS_NO_BITFIELDS |
2189e928 | 29 | select CPU_HAS_NO_CAS |
ad8f955d GU |
30 | select CPU_HAS_NO_MULDIV64 |
31 | select GENERIC_CSUM | |
e05f2e18 | 32 | select GPIOLIB |
bbd7ffdb | 33 | select HAVE_LEGACY_CLK |
ad8f955d GU |
34 | |
35 | endchoice | |
36 | ||
37 | if M68KCLASSIC | |
38 | ||
0e152d80 | 39 | config M68000 |
6b8be804 | 40 | def_bool y |
9da1a84a | 41 | depends on !MMU |
0e152d80 | 42 | select CPU_HAS_NO_BITFIELDS |
2189e928 | 43 | select CPU_HAS_NO_CAS |
84f3fb7a | 44 | select CPU_HAS_NO_MULDIV64 |
9f1f1180 | 45 | select CPU_HAS_NO_UNALIGNED |
7f73bafc | 46 | select GENERIC_CSUM |
fff7fb0b | 47 | select CPU_NO_EFFICIENT_FFS |
14c44b95 | 48 | select HAVE_ARCH_HASH |
18011e50 | 49 | select LEGACY_TIMER_TICK |
0e152d80 GU |
50 | help |
51 | The Freescale (was Motorola) 68000 CPU is the first generation of | |
52 | the well known M68K family of processors. The CPU core as well as | |
53 | being available as a stand alone CPU was also used in many | |
54 | System-On-Chip devices (eg 68328, 68302, etc). It does not contain | |
55 | a paging MMU. | |
56 | ||
0e152d80 GU |
57 | config M68020 |
58 | bool "68020 support" | |
59 | depends on MMU | |
e5f8d1f0 | 60 | select FPU |
e08d703c | 61 | select CPU_HAS_ADDRESS_SPACES |
0e152d80 GU |
62 | help |
63 | If you anticipate running this kernel on a computer with a MC68020 | |
64 | processor, say Y. Otherwise, say N. Note that the 68020 requires a | |
65 | 68851 MMU (Memory Management Unit) to run Linux/m68k, except on the | |
66 | Sun 3, which provides its own version. | |
67 | ||
68 | config M68030 | |
69 | bool "68030 support" | |
70 | depends on MMU && !MMU_SUN3 | |
e5f8d1f0 | 71 | select FPU |
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 | |
e5f8d1f0 | 81 | select FPU |
e08d703c | 82 | select CPU_HAS_ADDRESS_SPACES |
0e152d80 GU |
83 | help |
84 | If you anticipate running this kernel on a computer with a MC68LC040 | |
85 | or MC68040 processor, say Y. Otherwise, say N. Note that an | |
86 | MC68EC040 will not work, as it does not include an MMU (Memory | |
87 | Management Unit). | |
88 | ||
89 | config M68060 | |
90 | bool "68060 support" | |
91 | depends on MMU && !MMU_SUN3 | |
e5f8d1f0 | 92 | select FPU |
e08d703c | 93 | select CPU_HAS_ADDRESS_SPACES |
0e152d80 GU |
94 | help |
95 | If you anticipate running this kernel on a computer with a MC68060 | |
96 | processor, say Y. Otherwise, say N. | |
97 | ||
98 | config M68328 | |
8b22820e | 99 | bool |
0e152d80 GU |
100 | depends on !MMU |
101 | select M68000 | |
102 | help | |
103 | Motorola 68328 processor support. | |
104 | ||
105 | config M68EZ328 | |
8b22820e | 106 | bool |
0e152d80 GU |
107 | depends on !MMU |
108 | select M68000 | |
109 | help | |
110 | Motorola 68EX328 processor support. | |
111 | ||
112 | config M68VZ328 | |
8b22820e | 113 | bool |
0e152d80 GU |
114 | depends on !MMU |
115 | select M68000 | |
116 | help | |
117 | Motorola 68VZ328 processor support. | |
118 | ||
ad8f955d GU |
119 | endif # M68KCLASSIC |
120 | ||
121 | if COLDFIRE | |
122 | ||
fa95a1dd GU |
123 | choice |
124 | prompt "ColdFire SoC type" | |
125 | default M520x | |
126 | help | |
127 | Select the type of ColdFire System-on-Chip (SoC) that you want | |
128 | to build for. | |
129 | ||
0e152d80 GU |
130 | config M5206 |
131 | bool "MCF5206" | |
132 | depends on !MMU | |
0e152d80 | 133 | select COLDFIRE_SW_A7 |
275e70e4 | 134 | select COLDFIRE_TIMERS |
0e152d80 | 135 | select HAVE_MBAR |
fff7fb0b | 136 | select CPU_NO_EFFICIENT_FFS |
0e152d80 GU |
137 | help |
138 | Motorola ColdFire 5206 processor support. | |
139 | ||
140 | config M5206e | |
141 | bool "MCF5206e" | |
142 | depends on !MMU | |
0e152d80 | 143 | select COLDFIRE_SW_A7 |
275e70e4 | 144 | select COLDFIRE_TIMERS |
0e152d80 | 145 | select HAVE_MBAR |
fff7fb0b | 146 | select CPU_NO_EFFICIENT_FFS |
0e152d80 GU |
147 | help |
148 | Motorola ColdFire 5206e processor support. | |
149 | ||
150 | config M520x | |
151 | bool "MCF520x" | |
152 | depends on !MMU | |
275e70e4 | 153 | select COLDFIRE_PIT_TIMER |
0e152d80 GU |
154 | select HAVE_CACHE_SPLIT |
155 | help | |
a1ab4c1c | 156 | Freescale Coldfire 5207/5208 processor support. |
0e152d80 GU |
157 | |
158 | config M523x | |
159 | bool "MCF523x" | |
160 | depends on !MMU | |
275e70e4 | 161 | select COLDFIRE_PIT_TIMER |
0e152d80 GU |
162 | select HAVE_CACHE_SPLIT |
163 | select HAVE_IPSBAR | |
164 | help | |
165 | Freescale Coldfire 5230/1/2/4/5 processor support | |
166 | ||
167 | config M5249 | |
168 | bool "MCF5249" | |
169 | depends on !MMU | |
0e152d80 | 170 | select COLDFIRE_SW_A7 |
275e70e4 | 171 | select COLDFIRE_TIMERS |
0e152d80 | 172 | select HAVE_MBAR |
fff7fb0b | 173 | select CPU_NO_EFFICIENT_FFS |
0e152d80 GU |
174 | help |
175 | Motorola ColdFire 5249 processor support. | |
176 | ||
04e037aa SK |
177 | config M525x |
178 | bool "MCF525x" | |
179 | depends on !MMU | |
180 | select COLDFIRE_SW_A7 | |
275e70e4 | 181 | select COLDFIRE_TIMERS |
04e037aa | 182 | select HAVE_MBAR |
fff7fb0b | 183 | select CPU_NO_EFFICIENT_FFS |
04e037aa SK |
184 | help |
185 | Freescale (Motorola) Coldfire 5251/5253 processor support. | |
186 | ||
0e152d80 GU |
187 | config M5271 |
188 | bool "MCF5271" | |
189 | depends on !MMU | |
275e70e4 | 190 | select COLDFIRE_PIT_TIMER |
0e152d80 GU |
191 | select M527x |
192 | select HAVE_CACHE_SPLIT | |
193 | select HAVE_IPSBAR | |
0e152d80 GU |
194 | help |
195 | Freescale (Motorola) ColdFire 5270/5271 processor support. | |
196 | ||
197 | config M5272 | |
198 | bool "MCF5272" | |
199 | depends on !MMU | |
0e152d80 | 200 | select COLDFIRE_SW_A7 |
275e70e4 | 201 | select COLDFIRE_TIMERS |
0e152d80 | 202 | select HAVE_MBAR |
fff7fb0b | 203 | select CPU_NO_EFFICIENT_FFS |
0e152d80 GU |
204 | help |
205 | Motorola ColdFire 5272 processor support. | |
206 | ||
207 | config M5275 | |
208 | bool "MCF5275" | |
209 | depends on !MMU | |
275e70e4 | 210 | select COLDFIRE_PIT_TIMER |
0e152d80 GU |
211 | select M527x |
212 | select HAVE_CACHE_SPLIT | |
213 | select HAVE_IPSBAR | |
0e152d80 GU |
214 | help |
215 | Freescale (Motorola) ColdFire 5274/5275 processor support. | |
216 | ||
217 | config M528x | |
218 | bool "MCF528x" | |
219 | depends on !MMU | |
275e70e4 | 220 | select COLDFIRE_PIT_TIMER |
0e152d80 GU |
221 | select HAVE_CACHE_SPLIT |
222 | select HAVE_IPSBAR | |
223 | help | |
224 | Motorola ColdFire 5280/5282 processor support. | |
225 | ||
226 | config M5307 | |
227 | bool "MCF5307" | |
228 | depends on !MMU | |
275e70e4 | 229 | select COLDFIRE_TIMERS |
0e152d80 GU |
230 | select COLDFIRE_SW_A7 |
231 | select HAVE_CACHE_CB | |
232 | select HAVE_MBAR | |
fff7fb0b | 233 | select CPU_NO_EFFICIENT_FFS |
0e152d80 GU |
234 | help |
235 | Motorola ColdFire 5307 processor support. | |
236 | ||
237 | config M532x | |
238 | bool "MCF532x" | |
239 | depends on !MMU | |
275e70e4 | 240 | select COLDFIRE_TIMERS |
6eac4027 | 241 | select M53xx |
0e152d80 GU |
242 | select HAVE_CACHE_CB |
243 | help | |
244 | Freescale (Motorola) ColdFire 532x processor support. | |
245 | ||
e9d9dc6a GU |
246 | config M537x |
247 | bool "MCF537x" | |
248 | depends on !MMU | |
275e70e4 | 249 | select COLDFIRE_TIMERS |
e9d9dc6a GU |
250 | select M53xx |
251 | select HAVE_CACHE_CB | |
252 | help | |
253 | Freescale ColdFire 537x processor support. | |
254 | ||
0e152d80 GU |
255 | config M5407 |
256 | bool "MCF5407" | |
257 | depends on !MMU | |
0e152d80 | 258 | select COLDFIRE_SW_A7 |
275e70e4 | 259 | select COLDFIRE_TIMERS |
0e152d80 GU |
260 | select HAVE_CACHE_CB |
261 | select HAVE_MBAR | |
fff7fb0b | 262 | select CPU_NO_EFFICIENT_FFS |
0e152d80 GU |
263 | help |
264 | Motorola ColdFire 5407 processor support. | |
265 | ||
0e152d80 GU |
266 | config M547x |
267 | bool "MCF547x" | |
0e152d80 | 268 | select M54xx |
275e70e4 | 269 | select COLDFIRE_SLTIMERS |
1f7034b9 | 270 | select MMU_COLDFIRE if MMU |
e5f8d1f0 | 271 | select FPU if MMU |
0e152d80 GU |
272 | select HAVE_CACHE_CB |
273 | select HAVE_MBAR | |
fff7fb0b | 274 | select CPU_NO_EFFICIENT_FFS |
0e152d80 GU |
275 | help |
276 | Freescale ColdFire 5470/5471/5472/5473/5474/5475 processor support. | |
277 | ||
278 | config M548x | |
279 | bool "MCF548x" | |
275e70e4 | 280 | select COLDFIRE_SLTIMERS |
1f7034b9 | 281 | select MMU_COLDFIRE if MMU |
e5f8d1f0 | 282 | select FPU if MMU |
0e152d80 GU |
283 | select M54xx |
284 | select HAVE_CACHE_CB | |
285 | select HAVE_MBAR | |
fff7fb0b | 286 | select CPU_NO_EFFICIENT_FFS |
0e152d80 GU |
287 | help |
288 | Freescale ColdFire 5480/5481/5482/5483/5484/5485 processor support. | |
289 | ||
bea8bcb1 SK |
290 | config M5441x |
291 | bool "MCF5441x" | |
275e70e4 | 292 | select COLDFIRE_PIT_TIMER |
b47c7b6f | 293 | select MMU_COLDFIRE if MMU |
bea8bcb1 SK |
294 | select HAVE_CACHE_CB |
295 | help | |
296 | Freescale Coldfire 54410/54415/54416/54417/54418 processor support. | |
297 | ||
fa95a1dd GU |
298 | endchoice |
299 | ||
300 | config M527x | |
301 | bool | |
302 | ||
303 | config M53xx | |
304 | bool | |
305 | ||
306 | config M54xx | |
eb01d42a | 307 | select HAVE_PCI |
fa95a1dd GU |
308 | bool |
309 | ||
275e70e4 AB |
310 | config COLDFIRE_PIT_TIMER |
311 | bool | |
275e70e4 AB |
312 | |
313 | config COLDFIRE_TIMERS | |
314 | bool | |
315 | select LEGACY_TIMER_TICK | |
316 | ||
317 | config COLDFIRE_SLTIMERS | |
318 | bool | |
319 | select LEGACY_TIMER_TICK | |
320 | ||
ad8f955d GU |
321 | endif # COLDFIRE |
322 | ||
0e152d80 GU |
323 | comment "Processor Specific Options" |
324 | ||
325 | config M68KFPU_EMU | |
112f8b12 | 326 | bool "Math emulation support" |
ed6bc6bf | 327 | depends on M68KCLASSIC && FPU |
0e152d80 GU |
328 | help |
329 | At some point in the future, this will cause floating-point math | |
330 | instructions to be emulated by the kernel on machines that lack a | |
331 | floating-point math coprocessor. Thrill-seekers and chronically | |
332 | sleep-deprived psychotic hacker types can say Y now, everyone else | |
333 | should probably wait a while. | |
334 | ||
335 | config M68KFPU_EMU_EXTRAPREC | |
336 | bool "Math emulation extra precision" | |
337 | depends on M68KFPU_EMU | |
338 | help | |
339 | The fpu uses normally a few bit more during calculations for | |
340 | correct rounding, the emulator can (often) do the same but this | |
341 | extra calculation can cost quite some time, so you can disable | |
342 | it here. The emulator will then "only" calculate with a 64 bit | |
343 | mantissa and round slightly incorrect, what is more than enough | |
344 | for normal usage. | |
345 | ||
346 | config M68KFPU_EMU_ONLY | |
347 | bool "Math emulation only kernel" | |
348 | depends on M68KFPU_EMU | |
349 | help | |
350 | This option prevents any floating-point instructions from being | |
351 | compiled into the kernel, thereby the kernel doesn't save any | |
352 | floating point context anymore during task switches, so this | |
353 | kernel will only be usable on machines without a floating-point | |
354 | math coprocessor. This makes the kernel a bit faster as no tests | |
355 | needs to be executed whether a floating-point instruction in the | |
356 | kernel should be executed or not. | |
357 | ||
358 | config ADVANCED | |
359 | bool "Advanced configuration options" | |
360 | depends on MMU | |
a7f7f624 | 361 | help |
0e152d80 GU |
362 | This gives you access to some advanced options for the CPU. The |
363 | defaults should be fine for most users, but these options may make | |
364 | it possible for you to improve performance somewhat if you know what | |
365 | you are doing. | |
366 | ||
367 | Note that the answer to this question won't directly affect the | |
368 | kernel: saying N will just cause the configurator to skip all | |
369 | the questions about these options. | |
370 | ||
371 | Most users should say N to this question. | |
372 | ||
373 | config RMW_INSNS | |
374 | bool "Use read-modify-write instructions" | |
2189e928 | 375 | depends on ADVANCED && !CPU_HAS_NO_CAS |
a7f7f624 | 376 | help |
0e152d80 GU |
377 | This allows to use certain instructions that work with indivisible |
378 | read-modify-write bus cycles. While this is faster than the | |
379 | workaround of disabling interrupts, it can conflict with DMA | |
380 | ( = direct memory access) on many Amiga systems, and it is also said | |
381 | to destabilize other machines. It is very likely that this will | |
382 | cause serious problems on any Amiga or Atari Medusa if set. The only | |
383 | configuration where it should work are 68030-based Ataris, where it | |
384 | apparently improves performance. But you've been warned! Unless you | |
385 | really know what you are doing, say N. Try Y only if you're quite | |
386 | adventurous. | |
387 | ||
388 | config SINGLE_MEMORY_CHUNK | |
389 | bool "Use one physical chunk of memory only" if ADVANCED && !SUN3 | |
390 | depends on MMU | |
6b2ad8d7 | 391 | default y if SUN3 || MMU_COLDFIRE |
0e152d80 GU |
392 | help |
393 | Ignore all but the first contiguous chunk of physical memory for VM | |
394 | purposes. This will save a few bytes kernel size and may speed up | |
fcd353a3 MR |
395 | some operations. |
396 | When this option os set to N, you may want to lower "Maximum zone | |
397 | order" to save memory that could be wasted for unused memory map. | |
398 | Say N if not sure. | |
0e152d80 | 399 | |
0192445c | 400 | config ARCH_FORCE_MAX_ORDER |
fcd353a3 MR |
401 | int "Maximum zone order" if ADVANCED |
402 | depends on !SINGLE_MEMORY_CHUNK | |
403 | default "11" | |
404 | help | |
405 | The kernel memory allocator divides physically contiguous memory | |
406 | blocks into "zones", where each zone is a power of two number of | |
407 | pages. This option selects the largest power of two that the kernel | |
408 | keeps in the memory allocator. If you need to allocate very large | |
409 | blocks of physically contiguous memory, then you may need to | |
410 | increase this value. | |
411 | ||
412 | For systems that have holes in their physical address space this | |
413 | value also defines the minimal size of the hole that allows | |
414 | freeing unused memory map. | |
415 | ||
416 | This config option is actually maximum order plus one. For example, | |
417 | a value of 11 means that the largest free memory block is 2^10 pages. | |
418 | ||
0e152d80 GU |
419 | config 060_WRITETHROUGH |
420 | bool "Use write-through caching for 68060 supervisor accesses" | |
421 | depends on ADVANCED && M68060 | |
a7f7f624 | 422 | help |
0e152d80 GU |
423 | The 68060 generally uses copyback caching of recently accessed data. |
424 | Copyback caching means that memory writes will be held in an on-chip | |
425 | cache and only written back to memory some time later. Saying Y | |
426 | here will force supervisor (kernel) accesses to use writethrough | |
427 | caching. Writethrough caching means that data is written to memory | |
428 | straight away, so that cache and memory data always agree. | |
429 | Writethrough caching is less efficient, but is needed for some | |
430 | drivers on 68060 based systems where the 68060 bus snooping signal | |
431 | is hardwired on. The 53c710 SCSI driver is known to suffer from | |
432 | this problem. | |
433 | ||
434 | config M68K_L2_CACHE | |
435 | bool | |
436 | depends on MAC | |
437 | default y | |
438 | ||
022613e0 GU |
439 | config CPU_HAS_NO_BITFIELDS |
440 | bool | |
441 | ||
2189e928 GU |
442 | config CPU_HAS_NO_CAS |
443 | bool | |
444 | ||
022613e0 GU |
445 | config CPU_HAS_NO_MULDIV64 |
446 | bool | |
447 | ||
9f1f1180 GU |
448 | config CPU_HAS_NO_UNALIGNED |
449 | bool | |
450 | ||
022613e0 GU |
451 | config CPU_HAS_ADDRESS_SPACES |
452 | bool | |
12700c17 | 453 | select ALTERNATE_USER_ADDRESS_SPACE |
022613e0 | 454 | |
0e152d80 GU |
455 | config FPU |
456 | bool | |
457 | ||
458 | config COLDFIRE_SW_A7 | |
459 | bool | |
460 | ||
461 | config HAVE_CACHE_SPLIT | |
462 | bool | |
463 | ||
464 | config HAVE_CACHE_CB | |
465 | bool | |
466 | ||
467 | config HAVE_MBAR | |
468 | bool | |
469 | ||
470 | config HAVE_IPSBAR | |
471 | bool | |
472 | ||
0e152d80 GU |
473 | config CLOCK_FREQ |
474 | int "Set the core clock frequency" | |
15c2ca4e GU |
475 | default "25000000" if M5206 |
476 | default "54000000" if M5206e | |
477 | default "166666666" if M520x | |
478 | default "140000000" if M5249 | |
479 | default "150000000" if M527x || M523x | |
480 | default "90000000" if M5307 | |
481 | default "50000000" if M5407 | |
482 | default "266000000" if M54xx | |
0e152d80 | 483 | default "66666666" |
d9ee4896 | 484 | depends on COLDFIRE |
0e152d80 GU |
485 | help |
486 | Define the CPU clock frequency in use. This is the core clock | |
487 | frequency, it may or may not be the same as the external clock | |
488 | crystal fitted to your board. Some processors have an internal | |
489 | PLL and can have their frequency programmed at run time, others | |
490 | use internal dividers. In general the kernel won't setup a PLL | |
491 | if it is fitted (there are some exceptions). This value will be | |
492 | specific to the exact CPU that you are using. | |
493 | ||
494 | config OLDMASK | |
495 | bool "Old mask 5307 (1H55J) silicon" | |
496 | depends on M5307 | |
497 | help | |
498 | Build support for the older revision ColdFire 5307 silicon. | |
499 | Specifically this is the 1H55J mask revision. | |
500 | ||
501 | if HAVE_CACHE_SPLIT | |
502 | choice | |
503 | prompt "Split Cache Configuration" | |
504 | default CACHE_I | |
505 | ||
506 | config CACHE_I | |
507 | bool "Instruction" | |
508 | help | |
509 | Use all of the ColdFire CPU cache memory as an instruction cache. | |
510 | ||
511 | config CACHE_D | |
512 | bool "Data" | |
513 | help | |
514 | Use all of the ColdFire CPU cache memory as a data cache. | |
515 | ||
516 | config CACHE_BOTH | |
517 | bool "Both" | |
518 | help | |
519 | Split the ColdFire CPU cache, and use half as an instruction cache | |
520 | and half as a data cache. | |
521 | endchoice | |
a1ab4c1c | 522 | endif # HAVE_CACHE_SPLIT |
0e152d80 GU |
523 | |
524 | if HAVE_CACHE_CB | |
525 | choice | |
526 | prompt "Data cache mode" | |
527 | default CACHE_WRITETHRU | |
528 | ||
529 | config CACHE_WRITETHRU | |
530 | bool "Write-through" | |
531 | help | |
532 | The ColdFire CPU cache is set into Write-through mode. | |
533 | ||
534 | config CACHE_COPYBACK | |
535 | bool "Copy-back" | |
536 | help | |
537 | The ColdFire CPU cache is set into Copy-back mode. | |
538 | endchoice | |
a1ab4c1c | 539 | endif # HAVE_CACHE_CB |