Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | comment "Processor Type" |
2 | ||
3 | config CPU_32 | |
4 | bool | |
5 | default y | |
6 | ||
7 | # Select CPU types depending on the architecture selected. This selects | |
8 | # which CPUs we support in the kernel image, and the compiler instruction | |
9 | # optimiser behaviour. | |
10 | ||
11 | # ARM610 | |
12 | config CPU_ARM610 | |
13 | bool "Support ARM610 processor" | |
14 | depends on ARCH_RPC | |
15 | select CPU_32v3 | |
16 | select CPU_CACHE_V3 | |
17 | select CPU_CACHE_VIVT | |
fefdaa06 | 18 | select CPU_CP15_MMU |
f9c21a6e HC |
19 | select CPU_COPY_V3 if MMU |
20 | select CPU_TLB_V3 if MMU | |
1da177e4 LT |
21 | help |
22 | The ARM610 is the successor to the ARM3 processor | |
23 | and was produced by VLSI Technology Inc. | |
24 | ||
25 | Say Y if you want support for the ARM610 processor. | |
26 | Otherwise, say N. | |
27 | ||
07e0da78 HC |
28 | # ARM7TDMI |
29 | config CPU_ARM7TDMI | |
30 | bool "Support ARM7TDMI processor" | |
6b237a35 | 31 | depends on !MMU |
07e0da78 HC |
32 | select CPU_32v4T |
33 | select CPU_ABRT_LV4T | |
34 | select CPU_CACHE_V4 | |
35 | help | |
36 | A 32-bit RISC microprocessor based on the ARM7 processor core | |
37 | which has no memory control unit and cache. | |
38 | ||
39 | Say Y if you want support for the ARM7TDMI processor. | |
40 | Otherwise, say N. | |
41 | ||
1da177e4 LT |
42 | # ARM710 |
43 | config CPU_ARM710 | |
44 | bool "Support ARM710 processor" if !ARCH_CLPS7500 && ARCH_RPC | |
45 | default y if ARCH_CLPS7500 | |
46 | select CPU_32v3 | |
47 | select CPU_CACHE_V3 | |
48 | select CPU_CACHE_VIVT | |
fefdaa06 | 49 | select CPU_CP15_MMU |
f9c21a6e HC |
50 | select CPU_COPY_V3 if MMU |
51 | select CPU_TLB_V3 if MMU | |
1da177e4 LT |
52 | help |
53 | A 32-bit RISC microprocessor based on the ARM7 processor core | |
54 | designed by Advanced RISC Machines Ltd. The ARM710 is the | |
55 | successor to the ARM610 processor. It was released in | |
56 | July 1994 by VLSI Technology Inc. | |
57 | ||
58 | Say Y if you want support for the ARM710 processor. | |
59 | Otherwise, say N. | |
60 | ||
61 | # ARM720T | |
62 | config CPU_ARM720T | |
63 | bool "Support ARM720T processor" if !ARCH_CLPS711X && !ARCH_L7200 && !ARCH_CDB89712 && ARCH_INTEGRATOR | |
64 | default y if ARCH_CLPS711X || ARCH_L7200 || ARCH_CDB89712 || ARCH_H720X | |
260e98ed | 65 | select CPU_32v4T |
1da177e4 LT |
66 | select CPU_ABRT_LV4T |
67 | select CPU_CACHE_V4 | |
68 | select CPU_CACHE_VIVT | |
fefdaa06 | 69 | select CPU_CP15_MMU |
f9c21a6e HC |
70 | select CPU_COPY_V4WT if MMU |
71 | select CPU_TLB_V4WT if MMU | |
1da177e4 LT |
72 | help |
73 | A 32-bit RISC processor with 8kByte Cache, Write Buffer and | |
74 | MMU built around an ARM7TDMI core. | |
75 | ||
76 | Say Y if you want support for the ARM720T processor. | |
77 | Otherwise, say N. | |
78 | ||
b731c311 HC |
79 | # ARM740T |
80 | config CPU_ARM740T | |
81 | bool "Support ARM740T processor" if ARCH_INTEGRATOR | |
6b237a35 | 82 | depends on !MMU |
b731c311 HC |
83 | select CPU_32v4T |
84 | select CPU_ABRT_LV4T | |
85 | select CPU_CACHE_V3 # although the core is v4t | |
86 | select CPU_CP15_MPU | |
87 | help | |
88 | A 32-bit RISC processor with 8KB cache or 4KB variants, | |
89 | write buffer and MPU(Protection Unit) built around | |
90 | an ARM7TDMI core. | |
91 | ||
92 | Say Y if you want support for the ARM740T processor. | |
93 | Otherwise, say N. | |
94 | ||
43f5f014 HC |
95 | # ARM9TDMI |
96 | config CPU_ARM9TDMI | |
97 | bool "Support ARM9TDMI processor" | |
6b237a35 | 98 | depends on !MMU |
43f5f014 | 99 | select CPU_32v4T |
0f45d7f3 | 100 | select CPU_ABRT_NOMMU |
43f5f014 HC |
101 | select CPU_CACHE_V4 |
102 | help | |
103 | A 32-bit RISC microprocessor based on the ARM9 processor core | |
104 | which has no memory control unit and cache. | |
105 | ||
106 | Say Y if you want support for the ARM9TDMI processor. | |
107 | Otherwise, say N. | |
108 | ||
1da177e4 LT |
109 | # ARM920T |
110 | config CPU_ARM920T | |
3434d9d9 BD |
111 | bool "Support ARM920T processor" |
112 | depends on ARCH_EP93XX || ARCH_INTEGRATOR || CPU_S3C2410 || CPU_S3C2440 || CPU_S3C2442 || ARCH_IMX || ARCH_AAEC2000 || ARCH_AT91RM9200 | |
113 | default y if CPU_S3C2410 || CPU_S3C2440 || CPU_S3C2442 || ARCH_AT91RM9200 | |
260e98ed | 114 | select CPU_32v4T |
1da177e4 LT |
115 | select CPU_ABRT_EV4T |
116 | select CPU_CACHE_V4WT | |
117 | select CPU_CACHE_VIVT | |
fefdaa06 | 118 | select CPU_CP15_MMU |
f9c21a6e HC |
119 | select CPU_COPY_V4WB if MMU |
120 | select CPU_TLB_V4WBI if MMU | |
1da177e4 LT |
121 | help |
122 | The ARM920T is licensed to be produced by numerous vendors, | |
123 | and is used in the Maverick EP9312 and the Samsung S3C2410. | |
124 | ||
125 | More information on the Maverick EP9312 at | |
126 | <http://linuxdevices.com/products/PD2382866068.html>. | |
127 | ||
128 | Say Y if you want support for the ARM920T processor. | |
129 | Otherwise, say N. | |
130 | ||
131 | # ARM922T | |
132 | config CPU_ARM922T | |
133 | bool "Support ARM922T processor" if ARCH_INTEGRATOR | |
c53c9cf6 AV |
134 | depends on ARCH_LH7A40X || ARCH_INTEGRATOR || ARCH_KS8695 |
135 | default y if ARCH_LH7A40X || ARCH_KS8695 | |
260e98ed | 136 | select CPU_32v4T |
1da177e4 LT |
137 | select CPU_ABRT_EV4T |
138 | select CPU_CACHE_V4WT | |
139 | select CPU_CACHE_VIVT | |
fefdaa06 | 140 | select CPU_CP15_MMU |
f9c21a6e HC |
141 | select CPU_COPY_V4WB if MMU |
142 | select CPU_TLB_V4WBI if MMU | |
1da177e4 LT |
143 | help |
144 | The ARM922T is a version of the ARM920T, but with smaller | |
145 | instruction and data caches. It is used in Altera's | |
c53c9cf6 | 146 | Excalibur XA device family and Micrel's KS8695 Centaur. |
1da177e4 LT |
147 | |
148 | Say Y if you want support for the ARM922T processor. | |
149 | Otherwise, say N. | |
150 | ||
151 | # ARM925T | |
152 | config CPU_ARM925T | |
b288f75f | 153 | bool "Support ARM925T processor" if ARCH_OMAP1 |
3179a019 TL |
154 | depends on ARCH_OMAP15XX |
155 | default y if ARCH_OMAP15XX | |
260e98ed | 156 | select CPU_32v4T |
1da177e4 LT |
157 | select CPU_ABRT_EV4T |
158 | select CPU_CACHE_V4WT | |
159 | select CPU_CACHE_VIVT | |
fefdaa06 | 160 | select CPU_CP15_MMU |
f9c21a6e HC |
161 | select CPU_COPY_V4WB if MMU |
162 | select CPU_TLB_V4WBI if MMU | |
1da177e4 LT |
163 | help |
164 | The ARM925T is a mix between the ARM920T and ARM926T, but with | |
165 | different instruction and data caches. It is used in TI's OMAP | |
166 | device family. | |
167 | ||
168 | Say Y if you want support for the ARM925T processor. | |
169 | Otherwise, say N. | |
170 | ||
171 | # ARM926T | |
172 | config CPU_ARM926T | |
8ad68bbf | 173 | bool "Support ARM926T processor" |
877d7720 AV |
174 | depends on ARCH_INTEGRATOR || ARCH_VERSATILE_PB || MACH_VERSATILE_AB || ARCH_OMAP730 || ARCH_OMAP16XX || MACH_REALVIEW_EB || ARCH_PNX4008 || ARCH_NETX || CPU_S3C2412 || ARCH_AT91SAM9260 || ARCH_AT91SAM9261 || ARCH_AT91SAM9263 || ARCH_AT91SAM9RL || ARCH_NS9XXX || ARCH_DAVINCI |
175 | default y if ARCH_VERSATILE_PB || MACH_VERSATILE_AB || ARCH_OMAP730 || ARCH_OMAP16XX || ARCH_PNX4008 || ARCH_NETX || CPU_S3C2412 || ARCH_AT91SAM9260 || ARCH_AT91SAM9261 || ARCH_AT91SAM9263 || ARCH_AT91SAM9RL || ARCH_NS9XXX || ARCH_DAVINCI | |
1da177e4 LT |
176 | select CPU_32v5 |
177 | select CPU_ABRT_EV5TJ | |
178 | select CPU_CACHE_VIVT | |
fefdaa06 | 179 | select CPU_CP15_MMU |
f9c21a6e HC |
180 | select CPU_COPY_V4WB if MMU |
181 | select CPU_TLB_V4WBI if MMU | |
1da177e4 LT |
182 | help |
183 | This is a variant of the ARM920. It has slightly different | |
184 | instruction sequences for cache and TLB operations. Curiously, | |
185 | there is no documentation on it at the ARM corporate website. | |
186 | ||
187 | Say Y if you want support for the ARM926T processor. | |
188 | Otherwise, say N. | |
189 | ||
d60674eb HC |
190 | # ARM940T |
191 | config CPU_ARM940T | |
192 | bool "Support ARM940T processor" if ARCH_INTEGRATOR | |
6b237a35 | 193 | depends on !MMU |
d60674eb | 194 | select CPU_32v4T |
0f45d7f3 | 195 | select CPU_ABRT_NOMMU |
d60674eb HC |
196 | select CPU_CACHE_VIVT |
197 | select CPU_CP15_MPU | |
198 | help | |
199 | ARM940T is a member of the ARM9TDMI family of general- | |
3cb2fccc | 200 | purpose microprocessors with MPU and separate 4KB |
d60674eb HC |
201 | instruction and 4KB data cases, each with a 4-word line |
202 | length. | |
203 | ||
204 | Say Y if you want support for the ARM940T processor. | |
205 | Otherwise, say N. | |
206 | ||
f37f46eb HC |
207 | # ARM946E-S |
208 | config CPU_ARM946E | |
209 | bool "Support ARM946E-S processor" if ARCH_INTEGRATOR | |
6b237a35 | 210 | depends on !MMU |
f37f46eb | 211 | select CPU_32v5 |
0f45d7f3 | 212 | select CPU_ABRT_NOMMU |
f37f46eb HC |
213 | select CPU_CACHE_VIVT |
214 | select CPU_CP15_MPU | |
215 | help | |
216 | ARM946E-S is a member of the ARM9E-S family of high- | |
217 | performance, 32-bit system-on-chip processor solutions. | |
218 | The TCM and ARMv5TE 32-bit instruction set is supported. | |
219 | ||
220 | Say Y if you want support for the ARM946E-S processor. | |
221 | Otherwise, say N. | |
222 | ||
1da177e4 LT |
223 | # ARM1020 - needs validating |
224 | config CPU_ARM1020 | |
225 | bool "Support ARM1020T (rev 0) processor" | |
226 | depends on ARCH_INTEGRATOR | |
227 | select CPU_32v5 | |
228 | select CPU_ABRT_EV4T | |
229 | select CPU_CACHE_V4WT | |
230 | select CPU_CACHE_VIVT | |
fefdaa06 | 231 | select CPU_CP15_MMU |
f9c21a6e HC |
232 | select CPU_COPY_V4WB if MMU |
233 | select CPU_TLB_V4WBI if MMU | |
1da177e4 LT |
234 | help |
235 | The ARM1020 is the 32K cached version of the ARM10 processor, | |
236 | with an addition of a floating-point unit. | |
237 | ||
238 | Say Y if you want support for the ARM1020 processor. | |
239 | Otherwise, say N. | |
240 | ||
241 | # ARM1020E - needs validating | |
242 | config CPU_ARM1020E | |
243 | bool "Support ARM1020E processor" | |
244 | depends on ARCH_INTEGRATOR | |
245 | select CPU_32v5 | |
246 | select CPU_ABRT_EV4T | |
247 | select CPU_CACHE_V4WT | |
248 | select CPU_CACHE_VIVT | |
fefdaa06 | 249 | select CPU_CP15_MMU |
f9c21a6e HC |
250 | select CPU_COPY_V4WB if MMU |
251 | select CPU_TLB_V4WBI if MMU | |
1da177e4 LT |
252 | depends on n |
253 | ||
254 | # ARM1022E | |
255 | config CPU_ARM1022 | |
256 | bool "Support ARM1022E processor" | |
257 | depends on ARCH_INTEGRATOR | |
258 | select CPU_32v5 | |
259 | select CPU_ABRT_EV4T | |
260 | select CPU_CACHE_VIVT | |
fefdaa06 | 261 | select CPU_CP15_MMU |
f9c21a6e HC |
262 | select CPU_COPY_V4WB if MMU # can probably do better |
263 | select CPU_TLB_V4WBI if MMU | |
1da177e4 LT |
264 | help |
265 | The ARM1022E is an implementation of the ARMv5TE architecture | |
266 | based upon the ARM10 integer core with a 16KiB L1 Harvard cache, | |
267 | embedded trace macrocell, and a floating-point unit. | |
268 | ||
269 | Say Y if you want support for the ARM1022E processor. | |
270 | Otherwise, say N. | |
271 | ||
272 | # ARM1026EJ-S | |
273 | config CPU_ARM1026 | |
274 | bool "Support ARM1026EJ-S processor" | |
275 | depends on ARCH_INTEGRATOR | |
276 | select CPU_32v5 | |
277 | select CPU_ABRT_EV5T # But need Jazelle, but EV5TJ ignores bit 10 | |
278 | select CPU_CACHE_VIVT | |
fefdaa06 | 279 | select CPU_CP15_MMU |
f9c21a6e HC |
280 | select CPU_COPY_V4WB if MMU # can probably do better |
281 | select CPU_TLB_V4WBI if MMU | |
1da177e4 LT |
282 | help |
283 | The ARM1026EJ-S is an implementation of the ARMv5TEJ architecture | |
284 | based upon the ARM10 integer core. | |
285 | ||
286 | Say Y if you want support for the ARM1026EJ-S processor. | |
287 | Otherwise, say N. | |
288 | ||
289 | # SA110 | |
290 | config CPU_SA110 | |
291 | bool "Support StrongARM(R) SA-110 processor" if !ARCH_EBSA110 && !FOOTBRIDGE && !ARCH_TBOX && !ARCH_SHARK && !ARCH_NEXUSPCI && ARCH_RPC | |
292 | default y if ARCH_EBSA110 || FOOTBRIDGE || ARCH_TBOX || ARCH_SHARK || ARCH_NEXUSPCI | |
293 | select CPU_32v3 if ARCH_RPC | |
294 | select CPU_32v4 if !ARCH_RPC | |
295 | select CPU_ABRT_EV4 | |
296 | select CPU_CACHE_V4WB | |
297 | select CPU_CACHE_VIVT | |
fefdaa06 | 298 | select CPU_CP15_MMU |
f9c21a6e HC |
299 | select CPU_COPY_V4WB if MMU |
300 | select CPU_TLB_V4WB if MMU | |
1da177e4 LT |
301 | help |
302 | The Intel StrongARM(R) SA-110 is a 32-bit microprocessor and | |
303 | is available at five speeds ranging from 100 MHz to 233 MHz. | |
304 | More information is available at | |
305 | <http://developer.intel.com/design/strong/sa110.htm>. | |
306 | ||
307 | Say Y if you want support for the SA-110 processor. | |
308 | Otherwise, say N. | |
309 | ||
310 | # SA1100 | |
311 | config CPU_SA1100 | |
312 | bool | |
313 | depends on ARCH_SA1100 | |
314 | default y | |
315 | select CPU_32v4 | |
316 | select CPU_ABRT_EV4 | |
317 | select CPU_CACHE_V4WB | |
318 | select CPU_CACHE_VIVT | |
fefdaa06 | 319 | select CPU_CP15_MMU |
f9c21a6e | 320 | select CPU_TLB_V4WB if MMU |
1da177e4 LT |
321 | |
322 | # XScale | |
323 | config CPU_XSCALE | |
324 | bool | |
fa0b6251 | 325 | depends on ARCH_IOP32X || ARCH_IOP33X || PXA25x || PXA27x || ARCH_IXP4XX || ARCH_IXP2000 |
1da177e4 LT |
326 | default y |
327 | select CPU_32v5 | |
328 | select CPU_ABRT_EV5T | |
329 | select CPU_CACHE_VIVT | |
fefdaa06 | 330 | select CPU_CP15_MMU |
f9c21a6e | 331 | select CPU_TLB_V4WBI if MMU |
1da177e4 | 332 | |
23bdf86a LB |
333 | # XScale Core Version 3 |
334 | config CPU_XSC3 | |
335 | bool | |
2c8086a5 | 336 | depends on ARCH_IXP23XX || ARCH_IOP13XX || PXA3xx |
23bdf86a LB |
337 | default y |
338 | select CPU_32v5 | |
339 | select CPU_ABRT_EV5T | |
340 | select CPU_CACHE_VIVT | |
fefdaa06 | 341 | select CPU_CP15_MMU |
f9c21a6e | 342 | select CPU_TLB_V4WBI if MMU |
23bdf86a LB |
343 | select IO_36 |
344 | ||
1da177e4 LT |
345 | # ARMv6 |
346 | config CPU_V6 | |
347 | bool "Support ARM V6 processor" | |
52c543f9 QJ |
348 | depends on ARCH_INTEGRATOR || MACH_REALVIEW_EB || ARCH_OMAP2 || ARCH_MX3 |
349 | default y if ARCH_MX3 | |
1da177e4 LT |
350 | select CPU_32v6 |
351 | select CPU_ABRT_EV6 | |
352 | select CPU_CACHE_V6 | |
353 | select CPU_CACHE_VIPT | |
fefdaa06 | 354 | select CPU_CP15_MMU |
7b4c965a | 355 | select CPU_HAS_ASID if MMU |
f9c21a6e HC |
356 | select CPU_COPY_V6 if MMU |
357 | select CPU_TLB_V6 if MMU | |
1da177e4 | 358 | |
4a5f79e7 RK |
359 | # ARMv6k |
360 | config CPU_32v6K | |
361 | bool "Support ARM V6K processor extensions" if !SMP | |
362 | depends on CPU_V6 | |
52c543f9 | 363 | default y if SMP && !ARCH_MX3 |
4a5f79e7 RK |
364 | help |
365 | Say Y here if your ARMv6 processor supports the 'K' extension. | |
366 | This enables the kernel to use some instructions not present | |
367 | on previous processors, and as such a kernel build with this | |
368 | enabled will not boot on processors with do not support these | |
369 | instructions. | |
370 | ||
23688e99 CM |
371 | # ARMv7 |
372 | config CPU_V7 | |
373 | bool "Support ARM V7 processor" | |
374 | depends on ARCH_INTEGRATOR | |
375 | select CPU_32v6K | |
376 | select CPU_32v7 | |
377 | select CPU_ABRT_EV7 | |
378 | select CPU_CACHE_V7 | |
379 | select CPU_CACHE_VIPT | |
380 | select CPU_CP15_MMU | |
2eb8c82b | 381 | select CPU_HAS_ASID if MMU |
23688e99 | 382 | select CPU_COPY_V6 if MMU |
2ccdd1e7 | 383 | select CPU_TLB_V7 if MMU |
23688e99 | 384 | |
1da177e4 LT |
385 | # Figure out what processor architecture version we should be using. |
386 | # This defines the compiler instruction set which depends on the machine type. | |
387 | config CPU_32v3 | |
388 | bool | |
60b6cf68 | 389 | select TLS_REG_EMUL if SMP || !MMU |
48fa14f7 | 390 | select NEEDS_SYSCALL_FOR_CMPXCHG if SMP |
1da177e4 LT |
391 | |
392 | config CPU_32v4 | |
393 | bool | |
60b6cf68 | 394 | select TLS_REG_EMUL if SMP || !MMU |
48fa14f7 | 395 | select NEEDS_SYSCALL_FOR_CMPXCHG if SMP |
1da177e4 | 396 | |
260e98ed LB |
397 | config CPU_32v4T |
398 | bool | |
399 | select TLS_REG_EMUL if SMP || !MMU | |
400 | select NEEDS_SYSCALL_FOR_CMPXCHG if SMP | |
401 | ||
1da177e4 LT |
402 | config CPU_32v5 |
403 | bool | |
60b6cf68 | 404 | select TLS_REG_EMUL if SMP || !MMU |
48fa14f7 | 405 | select NEEDS_SYSCALL_FOR_CMPXCHG if SMP |
1da177e4 LT |
406 | |
407 | config CPU_32v6 | |
408 | bool | |
367afaf8 | 409 | select TLS_REG_EMUL if !CPU_32v6K && !MMU |
1da177e4 | 410 | |
23688e99 CM |
411 | config CPU_32v7 |
412 | bool | |
413 | ||
1da177e4 | 414 | # The abort model |
0f45d7f3 HC |
415 | config CPU_ABRT_NOMMU |
416 | bool | |
417 | ||
1da177e4 LT |
418 | config CPU_ABRT_EV4 |
419 | bool | |
420 | ||
421 | config CPU_ABRT_EV4T | |
422 | bool | |
423 | ||
424 | config CPU_ABRT_LV4T | |
425 | bool | |
426 | ||
427 | config CPU_ABRT_EV5T | |
428 | bool | |
429 | ||
430 | config CPU_ABRT_EV5TJ | |
431 | bool | |
432 | ||
433 | config CPU_ABRT_EV6 | |
434 | bool | |
435 | ||
23688e99 CM |
436 | config CPU_ABRT_EV7 |
437 | bool | |
438 | ||
1da177e4 LT |
439 | # The cache model |
440 | config CPU_CACHE_V3 | |
441 | bool | |
442 | ||
443 | config CPU_CACHE_V4 | |
444 | bool | |
445 | ||
446 | config CPU_CACHE_V4WT | |
447 | bool | |
448 | ||
449 | config CPU_CACHE_V4WB | |
450 | bool | |
451 | ||
452 | config CPU_CACHE_V6 | |
453 | bool | |
454 | ||
23688e99 CM |
455 | config CPU_CACHE_V7 |
456 | bool | |
457 | ||
1da177e4 LT |
458 | config CPU_CACHE_VIVT |
459 | bool | |
460 | ||
461 | config CPU_CACHE_VIPT | |
462 | bool | |
463 | ||
f9c21a6e | 464 | if MMU |
1da177e4 LT |
465 | # The copy-page model |
466 | config CPU_COPY_V3 | |
467 | bool | |
468 | ||
469 | config CPU_COPY_V4WT | |
470 | bool | |
471 | ||
472 | config CPU_COPY_V4WB | |
473 | bool | |
474 | ||
475 | config CPU_COPY_V6 | |
476 | bool | |
477 | ||
478 | # This selects the TLB model | |
479 | config CPU_TLB_V3 | |
480 | bool | |
481 | help | |
482 | ARM Architecture Version 3 TLB. | |
483 | ||
484 | config CPU_TLB_V4WT | |
485 | bool | |
486 | help | |
487 | ARM Architecture Version 4 TLB with writethrough cache. | |
488 | ||
489 | config CPU_TLB_V4WB | |
490 | bool | |
491 | help | |
492 | ARM Architecture Version 4 TLB with writeback cache. | |
493 | ||
494 | config CPU_TLB_V4WBI | |
495 | bool | |
496 | help | |
497 | ARM Architecture Version 4 TLB with writeback cache and invalidate | |
498 | instruction cache entry. | |
499 | ||
500 | config CPU_TLB_V6 | |
501 | bool | |
502 | ||
2ccdd1e7 CM |
503 | config CPU_TLB_V7 |
504 | bool | |
505 | ||
f9c21a6e HC |
506 | endif |
507 | ||
516793c6 RK |
508 | config CPU_HAS_ASID |
509 | bool | |
510 | help | |
511 | This indicates whether the CPU has the ASID register; used to | |
512 | tag TLB and possibly cache entries. | |
513 | ||
fefdaa06 HC |
514 | config CPU_CP15 |
515 | bool | |
516 | help | |
517 | Processor has the CP15 register. | |
518 | ||
519 | config CPU_CP15_MMU | |
520 | bool | |
521 | select CPU_CP15 | |
522 | help | |
523 | Processor has the CP15 register, which has MMU related registers. | |
524 | ||
525 | config CPU_CP15_MPU | |
526 | bool | |
527 | select CPU_CP15 | |
528 | help | |
529 | Processor has the CP15 register, which has MPU related registers. | |
530 | ||
23bdf86a LB |
531 | # |
532 | # CPU supports 36-bit I/O | |
533 | # | |
534 | config IO_36 | |
535 | bool | |
536 | ||
1da177e4 LT |
537 | comment "Processor Features" |
538 | ||
539 | config ARM_THUMB | |
540 | bool "Support Thumb user binaries" | |
23688e99 | 541 | depends on CPU_ARM720T || CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020 || CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || CPU_XSCALE || CPU_XSC3 || CPU_V6 || CPU_V7 |
1da177e4 LT |
542 | default y |
543 | help | |
544 | Say Y if you want to include kernel support for running user space | |
545 | Thumb binaries. | |
546 | ||
547 | The Thumb instruction set is a compressed form of the standard ARM | |
548 | instruction set resulting in smaller binaries at the expense of | |
549 | slightly less efficient code. | |
550 | ||
551 | If you don't know what this all is, saying Y is a safe choice. | |
552 | ||
553 | config CPU_BIG_ENDIAN | |
554 | bool "Build big-endian kernel" | |
555 | depends on ARCH_SUPPORTS_BIG_ENDIAN | |
556 | help | |
557 | Say Y if you plan on running a kernel in big-endian mode. | |
558 | Note that your board must be properly built and your board | |
559 | port must properly enable any big-endian related features | |
560 | of your chipset/board/processor. | |
561 | ||
6afd6fae | 562 | config CPU_HIGH_VECTOR |
6340aa61 | 563 | depends on !MMU && CPU_CP15 && !CPU_ARM740T |
6afd6fae HC |
564 | bool "Select the High exception vector" |
565 | default n | |
566 | help | |
567 | Say Y here to select high exception vector(0xFFFF0000~). | |
568 | The exception vector can be vary depending on the platform | |
569 | design in nommu mode. If your platform needs to select | |
570 | high exception vector, say Y. | |
571 | Otherwise or if you are unsure, say N, and the low exception | |
572 | vector (0x00000000~) will be used. | |
573 | ||
1da177e4 | 574 | config CPU_ICACHE_DISABLE |
f12d0d7c HC |
575 | bool "Disable I-Cache (I-bit)" |
576 | depends on CPU_CP15 && !(CPU_ARM610 || CPU_ARM710 || CPU_ARM720T || CPU_ARM740T || CPU_XSCALE || CPU_XSC3) | |
1da177e4 LT |
577 | help |
578 | Say Y here to disable the processor instruction cache. Unless | |
579 | you have a reason not to or are unsure, say N. | |
580 | ||
581 | config CPU_DCACHE_DISABLE | |
f12d0d7c HC |
582 | bool "Disable D-Cache (C-bit)" |
583 | depends on CPU_CP15 | |
1da177e4 LT |
584 | help |
585 | Say Y here to disable the processor data cache. Unless | |
586 | you have a reason not to or are unsure, say N. | |
587 | ||
f37f46eb HC |
588 | config CPU_DCACHE_SIZE |
589 | hex | |
590 | depends on CPU_ARM740T || CPU_ARM946E | |
591 | default 0x00001000 if CPU_ARM740T | |
592 | default 0x00002000 # default size for ARM946E-S | |
593 | help | |
594 | Some cores are synthesizable to have various sized cache. For | |
595 | ARM946E-S case, it can vary from 0KB to 1MB. | |
596 | To support such cache operations, it is efficient to know the size | |
597 | before compile time. | |
598 | If your SoC is configured to have a different size, define the value | |
599 | here with proper conditions. | |
600 | ||
1da177e4 LT |
601 | config CPU_DCACHE_WRITETHROUGH |
602 | bool "Force write through D-cache" | |
11179d8c | 603 | depends on (CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020) && !CPU_DCACHE_DISABLE |
1da177e4 LT |
604 | default y if CPU_ARM925T |
605 | help | |
606 | Say Y here to use the data cache in writethrough mode. Unless you | |
607 | specifically require this or are unsure, say N. | |
608 | ||
609 | config CPU_CACHE_ROUND_ROBIN | |
610 | bool "Round robin I and D cache replacement algorithm" | |
f37f46eb | 611 | depends on (CPU_ARM926T || CPU_ARM946E || CPU_ARM1020) && (!CPU_ICACHE_DISABLE || !CPU_DCACHE_DISABLE) |
1da177e4 LT |
612 | help |
613 | Say Y here to use the predictable round-robin cache replacement | |
614 | policy. Unless you specifically require this or are unsure, say N. | |
615 | ||
616 | config CPU_BPREDICT_DISABLE | |
617 | bool "Disable branch prediction" | |
23688e99 | 618 | depends on CPU_ARM1020 || CPU_V6 || CPU_XSC3 || CPU_V7 |
1da177e4 LT |
619 | help |
620 | Say Y here to disable branch prediction. If unsure, say N. | |
2d2669b6 | 621 | |
4b0e07a5 NP |
622 | config TLS_REG_EMUL |
623 | bool | |
4b0e07a5 | 624 | help |
70489c88 NP |
625 | An SMP system using a pre-ARMv6 processor (there are apparently |
626 | a few prototypes like that in existence) and therefore access to | |
627 | that required register must be emulated. | |
4b0e07a5 | 628 | |
2d2669b6 NP |
629 | config HAS_TLS_REG |
630 | bool | |
70489c88 NP |
631 | depends on !TLS_REG_EMUL |
632 | default y if SMP || CPU_32v7 | |
2d2669b6 NP |
633 | help |
634 | This selects support for the CP15 thread register. | |
70489c88 NP |
635 | It is defined to be available on some ARMv6 processors (including |
636 | all SMP capable ARMv6's) or later processors. User space may | |
637 | assume directly accessing that register and always obtain the | |
638 | expected value only on ARMv7 and above. | |
2d2669b6 | 639 | |
dcef1f63 NP |
640 | config NEEDS_SYSCALL_FOR_CMPXCHG |
641 | bool | |
dcef1f63 NP |
642 | help |
643 | SMP on a pre-ARMv6 processor? Well OK then. | |
644 | Forget about fast user space cmpxchg support. | |
645 | It is just not possible. | |
646 | ||
953233dc CM |
647 | config OUTER_CACHE |
648 | bool | |
649 | default n | |
382266ad CM |
650 | |
651 | config CACHE_L2X0 | |
652 | bool | |
653 | select OUTER_CACHE |