Root/
1 | comment "Processor Type" |
2 | |
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. |
10 | The Freescale ColdFire family of processors is a modern derivative |
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 ARCH_REQUIRE_GPIOLIB |
26 | select ARCH_HAVE_CUSTOM_GPIO_H |
27 | select CPU_HAS_NO_BITFIELDS |
28 | select CPU_HAS_NO_MULDIV64 |
29 | select GENERIC_CSUM |
30 | select HAVE_CLK |
31 | |
32 | endchoice |
33 | |
34 | if M68KCLASSIC |
35 | |
36 | config M68000 |
37 | bool "MC68000" |
38 | depends on !MMU |
39 | select CPU_HAS_NO_BITFIELDS |
40 | select CPU_HAS_NO_MULDIV64 |
41 | select CPU_HAS_NO_UNALIGNED |
42 | select GENERIC_CSUM |
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 |
53 | select CPU_HAS_NO_UNALIGNED |
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 | |
59 | config M68020 |
60 | bool "68020 support" |
61 | depends on MMU |
62 | select CPU_HAS_ADDRESS_SPACES |
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 |
72 | select CPU_HAS_ADDRESS_SPACES |
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 |
81 | select CPU_HAS_ADDRESS_SPACES |
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 |
91 | select CPU_HAS_ADDRESS_SPACES |
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 | |
124 | endif # M68KCLASSIC |
125 | |
126 | if COLDFIRE |
127 | |
128 | config M5206 |
129 | bool "MCF5206" |
130 | depends on !MMU |
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 |
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 |
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 |
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 |
164 | select COLDFIRE_SW_A7 |
165 | select HAVE_MBAR |
166 | help |
167 | Motorola ColdFire 5249 processor support. |
168 | |
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 | |
177 | config M527x |
178 | bool |
179 | |
180 | config M5271 |
181 | bool "MCF5271" |
182 | depends on !MMU |
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 |
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 |
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 |
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 |
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 M53xx |
227 | bool |
228 | |
229 | config M532x |
230 | bool "MCF532x" |
231 | depends on !MMU |
232 | select M53xx |
233 | select HAVE_CACHE_CB |
234 | help |
235 | Freescale (Motorola) ColdFire 532x processor support. |
236 | |
237 | config 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 | |
245 | config M5407 |
246 | bool "MCF5407" |
247 | depends on !MMU |
248 | select COLDFIRE_SW_A7 |
249 | select HAVE_CACHE_CB |
250 | select HAVE_MBAR |
251 | help |
252 | Motorola ColdFire 5407 processor support. |
253 | |
254 | config M54xx |
255 | bool |
256 | |
257 | config M547x |
258 | bool "MCF547x" |
259 | select M54xx |
260 | select MMU_COLDFIRE if MMU |
261 | select HAVE_CACHE_CB |
262 | select HAVE_MBAR |
263 | help |
264 | Freescale ColdFire 5470/5471/5472/5473/5474/5475 processor support. |
265 | |
266 | config M548x |
267 | bool "MCF548x" |
268 | select MMU_COLDFIRE if MMU |
269 | 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 | |
275 | config 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 | |
283 | endif # COLDFIRE |
284 | |
285 | |
286 | comment "Processor Specific Options" |
287 | |
288 | config M68KFPU_EMU |
289 | bool "Math emulation support" |
290 | depends on MMU |
291 | 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 | |
298 | config 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 | |
309 | config 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 | |
321 | config 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 | |
336 | config 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 | |
351 | config 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 | |
361 | config ARCH_DISCONTIGMEM_ENABLE |
362 | def_bool MMU && !SINGLE_MEMORY_CHUNK |
363 | |
364 | config 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 | |
379 | config M68K_L2_CACHE |
380 | bool |
381 | depends on MAC |
382 | default y |
383 | |
384 | config NODES_SHIFT |
385 | int |
386 | default "3" |
387 | depends on !SINGLE_MEMORY_CHUNK |
388 | |
389 | config CPU_HAS_NO_BITFIELDS |
390 | bool |
391 | |
392 | config CPU_HAS_NO_MULDIV64 |
393 | bool |
394 | |
395 | config CPU_HAS_NO_UNALIGNED |
396 | bool |
397 | |
398 | config CPU_HAS_ADDRESS_SPACES |
399 | bool |
400 | |
401 | config FPU |
402 | bool |
403 | |
404 | config COLDFIRE_SW_A7 |
405 | bool |
406 | |
407 | config HAVE_CACHE_SPLIT |
408 | bool |
409 | |
410 | config HAVE_CACHE_CB |
411 | bool |
412 | |
413 | config HAVE_MBAR |
414 | bool |
415 | |
416 | config HAVE_IPSBAR |
417 | bool |
418 | |
419 | config 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 | |
431 | config 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 | |
444 | config 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 | |
451 | if HAVE_CACHE_SPLIT |
452 | choice |
453 | prompt "Split Cache Configuration" |
454 | default CACHE_I |
455 | |
456 | config CACHE_I |
457 | bool "Instruction" |
458 | help |
459 | Use all of the ColdFire CPU cache memory as an instruction cache. |
460 | |
461 | config CACHE_D |
462 | bool "Data" |
463 | help |
464 | Use all of the ColdFire CPU cache memory as a data cache. |
465 | |
466 | config 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. |
471 | endchoice |
472 | endif |
473 | |
474 | if HAVE_CACHE_CB |
475 | choice |
476 | prompt "Data cache mode" |
477 | default CACHE_WRITETHRU |
478 | |
479 | config CACHE_WRITETHRU |
480 | bool "Write-through" |
481 | help |
482 | The ColdFire CPU cache is set into Write-through mode. |
483 | |
484 | config CACHE_COPYBACK |
485 | bool "Copy-back" |
486 | help |
487 | The ColdFire CPU cache is set into Copy-back mode. |
488 | endchoice |
489 | endif |
490 | |
491 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9