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1da177e4
LT
1comment "Processor Type"
2
3config 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
12config CPU_ARM610
c750815e 13 bool "Support ARM610 processor" if ARCH_RPC
1da177e4
LT
14 select CPU_32v3
15 select CPU_CACHE_V3
16 select CPU_CACHE_VIVT
fefdaa06 17 select CPU_CP15_MMU
f9c21a6e
HC
18 select CPU_COPY_V3 if MMU
19 select CPU_TLB_V3 if MMU
4fb28474 20 select CPU_PABRT_LEGACY
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
29config CPU_ARM7TDMI
30 bool "Support ARM7TDMI processor"
6b237a35 31 depends on !MMU
07e0da78
HC
32 select CPU_32v4T
33 select CPU_ABRT_LV4T
4fb28474 34 select CPU_PABRT_LEGACY
07e0da78
HC
35 select CPU_CACHE_V4
36 help
37 A 32-bit RISC microprocessor based on the ARM7 processor core
38 which has no memory control unit and cache.
39
40 Say Y if you want support for the ARM7TDMI processor.
41 Otherwise, say N.
42
1da177e4
LT
43# ARM710
44config CPU_ARM710
c750815e 45 bool "Support ARM710 processor" if ARCH_RPC
1da177e4
LT
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
4fb28474 52 select CPU_PABRT_LEGACY
1da177e4
LT
53 help
54 A 32-bit RISC microprocessor based on the ARM7 processor core
55 designed by Advanced RISC Machines Ltd. The ARM710 is the
56 successor to the ARM610 processor. It was released in
57 July 1994 by VLSI Technology Inc.
58
59 Say Y if you want support for the ARM710 processor.
60 Otherwise, say N.
61
62# ARM720T
63config CPU_ARM720T
c750815e 64 bool "Support ARM720T processor" if ARCH_INTEGRATOR
260e98ed 65 select CPU_32v4T
1da177e4 66 select CPU_ABRT_LV4T
4fb28474 67 select CPU_PABRT_LEGACY
1da177e4
LT
68 select CPU_CACHE_V4
69 select CPU_CACHE_VIVT
fefdaa06 70 select CPU_CP15_MMU
f9c21a6e
HC
71 select CPU_COPY_V4WT if MMU
72 select CPU_TLB_V4WT if MMU
1da177e4
LT
73 help
74 A 32-bit RISC processor with 8kByte Cache, Write Buffer and
75 MMU built around an ARM7TDMI core.
76
77 Say Y if you want support for the ARM720T processor.
78 Otherwise, say N.
79
b731c311
HC
80# ARM740T
81config CPU_ARM740T
82 bool "Support ARM740T processor" if ARCH_INTEGRATOR
6b237a35 83 depends on !MMU
b731c311
HC
84 select CPU_32v4T
85 select CPU_ABRT_LV4T
4fb28474 86 select CPU_PABRT_LEGACY
b731c311
HC
87 select CPU_CACHE_V3 # although the core is v4t
88 select CPU_CP15_MPU
89 help
90 A 32-bit RISC processor with 8KB cache or 4KB variants,
91 write buffer and MPU(Protection Unit) built around
92 an ARM7TDMI core.
93
94 Say Y if you want support for the ARM740T processor.
95 Otherwise, say N.
96
43f5f014
HC
97# ARM9TDMI
98config CPU_ARM9TDMI
99 bool "Support ARM9TDMI processor"
6b237a35 100 depends on !MMU
43f5f014 101 select CPU_32v4T
0f45d7f3 102 select CPU_ABRT_NOMMU
4fb28474 103 select CPU_PABRT_LEGACY
43f5f014
HC
104 select CPU_CACHE_V4
105 help
106 A 32-bit RISC microprocessor based on the ARM9 processor core
107 which has no memory control unit and cache.
108
109 Say Y if you want support for the ARM9TDMI processor.
110 Otherwise, say N.
111
1da177e4
LT
112# ARM920T
113config CPU_ARM920T
c750815e 114 bool "Support ARM920T processor" if ARCH_INTEGRATOR
260e98ed 115 select CPU_32v4T
1da177e4 116 select CPU_ABRT_EV4T
4fb28474 117 select CPU_PABRT_LEGACY
1da177e4
LT
118 select CPU_CACHE_V4WT
119 select CPU_CACHE_VIVT
fefdaa06 120 select CPU_CP15_MMU
f9c21a6e
HC
121 select CPU_COPY_V4WB if MMU
122 select CPU_TLB_V4WBI if MMU
1da177e4
LT
123 help
124 The ARM920T is licensed to be produced by numerous vendors,
125 and is used in the Maverick EP9312 and the Samsung S3C2410.
126
127 More information on the Maverick EP9312 at
128 <http://linuxdevices.com/products/PD2382866068.html>.
129
130 Say Y if you want support for the ARM920T processor.
131 Otherwise, say N.
132
133# ARM922T
134config CPU_ARM922T
135 bool "Support ARM922T processor" if ARCH_INTEGRATOR
260e98ed 136 select CPU_32v4T
1da177e4 137 select CPU_ABRT_EV4T
4fb28474 138 select CPU_PABRT_LEGACY
1da177e4
LT
139 select CPU_CACHE_V4WT
140 select CPU_CACHE_VIVT
fefdaa06 141 select CPU_CP15_MMU
f9c21a6e
HC
142 select CPU_COPY_V4WB if MMU
143 select CPU_TLB_V4WBI if MMU
1da177e4
LT
144 help
145 The ARM922T is a version of the ARM920T, but with smaller
146 instruction and data caches. It is used in Altera's
c53c9cf6 147 Excalibur XA device family and Micrel's KS8695 Centaur.
1da177e4
LT
148
149 Say Y if you want support for the ARM922T processor.
150 Otherwise, say N.
151
152# ARM925T
153config CPU_ARM925T
b288f75f 154 bool "Support ARM925T processor" if ARCH_OMAP1
260e98ed 155 select CPU_32v4T
1da177e4 156 select CPU_ABRT_EV4T
4fb28474 157 select CPU_PABRT_LEGACY
1da177e4
LT
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
172config CPU_ARM926T
c750815e 173 bool "Support ARM926T processor" if ARCH_INTEGRATOR || MACH_REALVIEW_EB
1da177e4
LT
174 select CPU_32v5
175 select CPU_ABRT_EV5TJ
4fb28474 176 select CPU_PABRT_LEGACY
1da177e4 177 select CPU_CACHE_VIVT
fefdaa06 178 select CPU_CP15_MMU
f9c21a6e
HC
179 select CPU_COPY_V4WB if MMU
180 select CPU_TLB_V4WBI if MMU
1da177e4
LT
181 help
182 This is a variant of the ARM920. It has slightly different
183 instruction sequences for cache and TLB operations. Curiously,
184 there is no documentation on it at the ARM corporate website.
185
186 Say Y if you want support for the ARM926T processor.
187 Otherwise, say N.
188
28853ac8
PZ
189# FA526
190config CPU_FA526
191 bool
192 select CPU_32v4
193 select CPU_ABRT_EV4
4fb28474 194 select CPU_PABRT_LEGACY
28853ac8
PZ
195 select CPU_CACHE_VIVT
196 select CPU_CP15_MMU
197 select CPU_CACHE_FA
198 select CPU_COPY_FA if MMU
199 select CPU_TLB_FA if MMU
200 help
201 The FA526 is a version of the ARMv4 compatible processor with
202 Branch Target Buffer, Unified TLB and cache line size 16.
203
204 Say Y if you want support for the FA526 processor.
205 Otherwise, say N.
206
d60674eb
HC
207# ARM940T
208config CPU_ARM940T
209 bool "Support ARM940T processor" if ARCH_INTEGRATOR
6b237a35 210 depends on !MMU
d60674eb 211 select CPU_32v4T
0f45d7f3 212 select CPU_ABRT_NOMMU
4fb28474 213 select CPU_PABRT_LEGACY
d60674eb
HC
214 select CPU_CACHE_VIVT
215 select CPU_CP15_MPU
216 help
217 ARM940T is a member of the ARM9TDMI family of general-
3cb2fccc 218 purpose microprocessors with MPU and separate 4KB
d60674eb
HC
219 instruction and 4KB data cases, each with a 4-word line
220 length.
221
222 Say Y if you want support for the ARM940T processor.
223 Otherwise, say N.
224
f37f46eb
HC
225# ARM946E-S
226config CPU_ARM946E
227 bool "Support ARM946E-S processor" if ARCH_INTEGRATOR
6b237a35 228 depends on !MMU
f37f46eb 229 select CPU_32v5
0f45d7f3 230 select CPU_ABRT_NOMMU
4fb28474 231 select CPU_PABRT_LEGACY
f37f46eb
HC
232 select CPU_CACHE_VIVT
233 select CPU_CP15_MPU
234 help
235 ARM946E-S is a member of the ARM9E-S family of high-
236 performance, 32-bit system-on-chip processor solutions.
237 The TCM and ARMv5TE 32-bit instruction set is supported.
238
239 Say Y if you want support for the ARM946E-S processor.
240 Otherwise, say N.
241
1da177e4
LT
242# ARM1020 - needs validating
243config CPU_ARM1020
c750815e 244 bool "Support ARM1020T (rev 0) processor" if ARCH_INTEGRATOR
1da177e4
LT
245 select CPU_32v5
246 select CPU_ABRT_EV4T
4fb28474 247 select CPU_PABRT_LEGACY
1da177e4
LT
248 select CPU_CACHE_V4WT
249 select CPU_CACHE_VIVT
fefdaa06 250 select CPU_CP15_MMU
f9c21a6e
HC
251 select CPU_COPY_V4WB if MMU
252 select CPU_TLB_V4WBI if MMU
1da177e4
LT
253 help
254 The ARM1020 is the 32K cached version of the ARM10 processor,
255 with an addition of a floating-point unit.
256
257 Say Y if you want support for the ARM1020 processor.
258 Otherwise, say N.
259
260# ARM1020E - needs validating
261config CPU_ARM1020E
c750815e 262 bool "Support ARM1020E processor" if ARCH_INTEGRATOR
1da177e4
LT
263 select CPU_32v5
264 select CPU_ABRT_EV4T
4fb28474 265 select CPU_PABRT_LEGACY
1da177e4
LT
266 select CPU_CACHE_V4WT
267 select CPU_CACHE_VIVT
fefdaa06 268 select CPU_CP15_MMU
f9c21a6e
HC
269 select CPU_COPY_V4WB if MMU
270 select CPU_TLB_V4WBI if MMU
1da177e4
LT
271 depends on n
272
273# ARM1022E
274config CPU_ARM1022
c750815e 275 bool "Support ARM1022E processor" if ARCH_INTEGRATOR
1da177e4
LT
276 select CPU_32v5
277 select CPU_ABRT_EV4T
4fb28474 278 select CPU_PABRT_LEGACY
1da177e4 279 select CPU_CACHE_VIVT
fefdaa06 280 select CPU_CP15_MMU
f9c21a6e
HC
281 select CPU_COPY_V4WB if MMU # can probably do better
282 select CPU_TLB_V4WBI if MMU
1da177e4
LT
283 help
284 The ARM1022E is an implementation of the ARMv5TE architecture
285 based upon the ARM10 integer core with a 16KiB L1 Harvard cache,
286 embedded trace macrocell, and a floating-point unit.
287
288 Say Y if you want support for the ARM1022E processor.
289 Otherwise, say N.
290
291# ARM1026EJ-S
292config CPU_ARM1026
c750815e 293 bool "Support ARM1026EJ-S processor" if ARCH_INTEGRATOR
1da177e4
LT
294 select CPU_32v5
295 select CPU_ABRT_EV5T # But need Jazelle, but EV5TJ ignores bit 10
4fb28474 296 select CPU_PABRT_LEGACY
1da177e4 297 select CPU_CACHE_VIVT
fefdaa06 298 select CPU_CP15_MMU
f9c21a6e
HC
299 select CPU_COPY_V4WB if MMU # can probably do better
300 select CPU_TLB_V4WBI if MMU
1da177e4
LT
301 help
302 The ARM1026EJ-S is an implementation of the ARMv5TEJ architecture
303 based upon the ARM10 integer core.
304
305 Say Y if you want support for the ARM1026EJ-S processor.
306 Otherwise, say N.
307
308# SA110
309config CPU_SA110
c750815e 310 bool "Support StrongARM(R) SA-110 processor" if ARCH_RPC
1da177e4
LT
311 select CPU_32v3 if ARCH_RPC
312 select CPU_32v4 if !ARCH_RPC
313 select CPU_ABRT_EV4
4fb28474 314 select CPU_PABRT_LEGACY
1da177e4
LT
315 select CPU_CACHE_V4WB
316 select CPU_CACHE_VIVT
fefdaa06 317 select CPU_CP15_MMU
f9c21a6e
HC
318 select CPU_COPY_V4WB if MMU
319 select CPU_TLB_V4WB if MMU
1da177e4
LT
320 help
321 The Intel StrongARM(R) SA-110 is a 32-bit microprocessor and
322 is available at five speeds ranging from 100 MHz to 233 MHz.
323 More information is available at
324 <http://developer.intel.com/design/strong/sa110.htm>.
325
326 Say Y if you want support for the SA-110 processor.
327 Otherwise, say N.
328
329# SA1100
330config CPU_SA1100
331 bool
1da177e4
LT
332 select CPU_32v4
333 select CPU_ABRT_EV4
4fb28474 334 select CPU_PABRT_LEGACY
1da177e4
LT
335 select CPU_CACHE_V4WB
336 select CPU_CACHE_VIVT
fefdaa06 337 select CPU_CP15_MMU
f9c21a6e 338 select CPU_TLB_V4WB if MMU
1da177e4
LT
339
340# XScale
341config CPU_XSCALE
342 bool
1da177e4
LT
343 select CPU_32v5
344 select CPU_ABRT_EV5T
4fb28474 345 select CPU_PABRT_LEGACY
1da177e4 346 select CPU_CACHE_VIVT
fefdaa06 347 select CPU_CP15_MMU
f9c21a6e 348 select CPU_TLB_V4WBI if MMU
1da177e4 349
23bdf86a
LB
350# XScale Core Version 3
351config CPU_XSC3
352 bool
23bdf86a
LB
353 select CPU_32v5
354 select CPU_ABRT_EV5T
4fb28474 355 select CPU_PABRT_LEGACY
23bdf86a 356 select CPU_CACHE_VIVT
fefdaa06 357 select CPU_CP15_MMU
f9c21a6e 358 select CPU_TLB_V4WBI if MMU
23bdf86a
LB
359 select IO_36
360
49cbe786
EM
361# Marvell PJ1 (Mohawk)
362config CPU_MOHAWK
363 bool
364 select CPU_32v5
365 select CPU_ABRT_EV5T
4fb28474 366 select CPU_PABRT_LEGACY
49cbe786
EM
367 select CPU_CACHE_VIVT
368 select CPU_CP15_MMU
369 select CPU_TLB_V4WBI if MMU
370 select CPU_COPY_V4WB if MMU
371
e50d6409
AH
372# Feroceon
373config CPU_FEROCEON
374 bool
e50d6409
AH
375 select CPU_32v5
376 select CPU_ABRT_EV5T
4fb28474 377 select CPU_PABRT_LEGACY
e50d6409
AH
378 select CPU_CACHE_VIVT
379 select CPU_CP15_MMU
0ed15071 380 select CPU_COPY_FEROCEON if MMU
99c6dc11 381 select CPU_TLB_FEROCEON if MMU
e50d6409 382
d910a0aa
TP
383config CPU_FEROCEON_OLD_ID
384 bool "Accept early Feroceon cores with an ARM926 ID"
385 depends on CPU_FEROCEON && !CPU_ARM926T
386 default y
387 help
388 This enables the usage of some old Feroceon cores
389 for which the CPU ID is equal to the ARM926 ID.
390 Relevant for Feroceon-1850 and early Feroceon-2850.
391
1da177e4
LT
392# ARMv6
393config CPU_V6
1b504bbe 394 bool "Support ARM V6 processor" if ARCH_INTEGRATOR || MACH_REALVIEW_EB || MACH_REALVIEW_PBX
1da177e4
LT
395 select CPU_32v6
396 select CPU_ABRT_EV6
4fb28474 397 select CPU_PABRT_V6
1da177e4
LT
398 select CPU_CACHE_V6
399 select CPU_CACHE_VIPT
fefdaa06 400 select CPU_CP15_MMU
7b4c965a 401 select CPU_HAS_ASID if MMU
f9c21a6e
HC
402 select CPU_COPY_V6 if MMU
403 select CPU_TLB_V6 if MMU
1da177e4 404
4a5f79e7
RK
405# ARMv6k
406config CPU_32v6K
407 bool "Support ARM V6K processor extensions" if !SMP
408 depends on CPU_V6
52c543f9 409 default y if SMP && !ARCH_MX3
4a5f79e7
RK
410 help
411 Say Y here if your ARMv6 processor supports the 'K' extension.
412 This enables the kernel to use some instructions not present
413 on previous processors, and as such a kernel build with this
414 enabled will not boot on processors with do not support these
415 instructions.
416
23688e99
CM
417# ARMv7
418config CPU_V7
1b504bbe 419 bool "Support ARM V7 processor" if ARCH_INTEGRATOR || MACH_REALVIEW_EB || MACH_REALVIEW_PBX
23688e99
CM
420 select CPU_32v6K
421 select CPU_32v7
422 select CPU_ABRT_EV7
4fb28474 423 select CPU_PABRT_V7
23688e99
CM
424 select CPU_CACHE_V7
425 select CPU_CACHE_VIPT
426 select CPU_CP15_MMU
2eb8c82b 427 select CPU_HAS_ASID if MMU
23688e99 428 select CPU_COPY_V6 if MMU
2ccdd1e7 429 select CPU_TLB_V7 if MMU
23688e99 430
1da177e4
LT
431# Figure out what processor architecture version we should be using.
432# This defines the compiler instruction set which depends on the machine type.
433config CPU_32v3
434 bool
60b6cf68 435 select TLS_REG_EMUL if SMP || !MMU
48fa14f7 436 select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
1da177e4
LT
437
438config CPU_32v4
439 bool
60b6cf68 440 select TLS_REG_EMUL if SMP || !MMU
48fa14f7 441 select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
1da177e4 442
260e98ed
LB
443config CPU_32v4T
444 bool
445 select TLS_REG_EMUL if SMP || !MMU
446 select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
447
1da177e4
LT
448config CPU_32v5
449 bool
60b6cf68 450 select TLS_REG_EMUL if SMP || !MMU
48fa14f7 451 select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
1da177e4
LT
452
453config CPU_32v6
454 bool
367afaf8 455 select TLS_REG_EMUL if !CPU_32v6K && !MMU
1da177e4 456
23688e99
CM
457config CPU_32v7
458 bool
459
1da177e4 460# The abort model
0f45d7f3
HC
461config CPU_ABRT_NOMMU
462 bool
463
1da177e4
LT
464config CPU_ABRT_EV4
465 bool
466
467config CPU_ABRT_EV4T
468 bool
469
470config CPU_ABRT_LV4T
471 bool
472
473config CPU_ABRT_EV5T
474 bool
475
476config CPU_ABRT_EV5TJ
477 bool
478
479config CPU_ABRT_EV6
480 bool
481
23688e99
CM
482config CPU_ABRT_EV7
483 bool
484
4fb28474 485config CPU_PABRT_LEGACY
48d7927b
PB
486 bool
487
4fb28474
KS
488config CPU_PABRT_V6
489 bool
490
491config CPU_PABRT_V7
48d7927b
PB
492 bool
493
1da177e4
LT
494# The cache model
495config CPU_CACHE_V3
496 bool
497
498config CPU_CACHE_V4
499 bool
500
501config CPU_CACHE_V4WT
502 bool
503
504config CPU_CACHE_V4WB
505 bool
506
507config CPU_CACHE_V6
508 bool
509
23688e99
CM
510config CPU_CACHE_V7
511 bool
512
1da177e4
LT
513config CPU_CACHE_VIVT
514 bool
515
516config CPU_CACHE_VIPT
517 bool
518
28853ac8
PZ
519config CPU_CACHE_FA
520 bool
521
f9c21a6e 522if MMU
1da177e4
LT
523# The copy-page model
524config CPU_COPY_V3
525 bool
526
527config CPU_COPY_V4WT
528 bool
529
530config CPU_COPY_V4WB
531 bool
532
0ed15071
LB
533config CPU_COPY_FEROCEON
534 bool
535
28853ac8
PZ
536config CPU_COPY_FA
537 bool
538
1da177e4
LT
539config CPU_COPY_V6
540 bool
541
542# This selects the TLB model
543config CPU_TLB_V3
544 bool
545 help
546 ARM Architecture Version 3 TLB.
547
548config CPU_TLB_V4WT
549 bool
550 help
551 ARM Architecture Version 4 TLB with writethrough cache.
552
553config CPU_TLB_V4WB
554 bool
555 help
556 ARM Architecture Version 4 TLB with writeback cache.
557
558config CPU_TLB_V4WBI
559 bool
560 help
561 ARM Architecture Version 4 TLB with writeback cache and invalidate
562 instruction cache entry.
563
99c6dc11
LB
564config CPU_TLB_FEROCEON
565 bool
566 help
567 Feroceon TLB (v4wbi with non-outer-cachable page table walks).
568
28853ac8
PZ
569config CPU_TLB_FA
570 bool
571 help
572 Faraday ARM FA526 architecture, unified TLB with writeback cache
573 and invalidate instruction cache entry. Branch target buffer is
574 also supported.
575
1da177e4
LT
576config CPU_TLB_V6
577 bool
578
2ccdd1e7
CM
579config CPU_TLB_V7
580 bool
581
f9c21a6e
HC
582endif
583
516793c6
RK
584config CPU_HAS_ASID
585 bool
586 help
587 This indicates whether the CPU has the ASID register; used to
588 tag TLB and possibly cache entries.
589
fefdaa06
HC
590config CPU_CP15
591 bool
592 help
593 Processor has the CP15 register.
594
595config CPU_CP15_MMU
596 bool
597 select CPU_CP15
598 help
599 Processor has the CP15 register, which has MMU related registers.
600
601config CPU_CP15_MPU
602 bool
603 select CPU_CP15
604 help
605 Processor has the CP15 register, which has MPU related registers.
606
23bdf86a
LB
607#
608# CPU supports 36-bit I/O
609#
610config IO_36
611 bool
612
1da177e4
LT
613comment "Processor Features"
614
615config ARM_THUMB
616 bool "Support Thumb user binaries"
49cbe786 617 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_MOHAWK || CPU_V6 || CPU_V7 || CPU_FEROCEON
1da177e4
LT
618 default y
619 help
620 Say Y if you want to include kernel support for running user space
621 Thumb binaries.
622
623 The Thumb instruction set is a compressed form of the standard ARM
624 instruction set resulting in smaller binaries at the expense of
625 slightly less efficient code.
626
627 If you don't know what this all is, saying Y is a safe choice.
628
d7f864be
CM
629config ARM_THUMBEE
630 bool "Enable ThumbEE CPU extension"
631 depends on CPU_V7
632 help
633 Say Y here if you have a CPU with the ThumbEE extension and code to
634 make use of it. Say N for code that can run on CPUs without ThumbEE.
635
1da177e4
LT
636config CPU_BIG_ENDIAN
637 bool "Build big-endian kernel"
638 depends on ARCH_SUPPORTS_BIG_ENDIAN
639 help
640 Say Y if you plan on running a kernel in big-endian mode.
641 Note that your board must be properly built and your board
642 port must properly enable any big-endian related features
643 of your chipset/board/processor.
644
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CM
645config CPU_ENDIAN_BE8
646 bool
647 depends on CPU_BIG_ENDIAN
648 default CPU_V6 || CPU_V7
649 help
650 Support for the BE-8 (big-endian) mode on ARMv6 and ARMv7 processors.
651
652config CPU_ENDIAN_BE32
653 bool
654 depends on CPU_BIG_ENDIAN
655 default !CPU_ENDIAN_BE8
656 help
657 Support for the BE-32 (big-endian) mode on pre-ARMv6 processors.
658
6afd6fae 659config CPU_HIGH_VECTOR
6340aa61 660 depends on !MMU && CPU_CP15 && !CPU_ARM740T
6afd6fae 661 bool "Select the High exception vector"
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HC
662 help
663 Say Y here to select high exception vector(0xFFFF0000~).
664 The exception vector can be vary depending on the platform
665 design in nommu mode. If your platform needs to select
666 high exception vector, say Y.
667 Otherwise or if you are unsure, say N, and the low exception
668 vector (0x00000000~) will be used.
669
1da177e4 670config CPU_ICACHE_DISABLE
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HC
671 bool "Disable I-Cache (I-bit)"
672 depends on CPU_CP15 && !(CPU_ARM610 || CPU_ARM710 || CPU_ARM720T || CPU_ARM740T || CPU_XSCALE || CPU_XSC3)
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LT
673 help
674 Say Y here to disable the processor instruction cache. Unless
675 you have a reason not to or are unsure, say N.
676
677config CPU_DCACHE_DISABLE
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HC
678 bool "Disable D-Cache (C-bit)"
679 depends on CPU_CP15
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LT
680 help
681 Say Y here to disable the processor data cache. Unless
682 you have a reason not to or are unsure, say N.
683
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HC
684config CPU_DCACHE_SIZE
685 hex
686 depends on CPU_ARM740T || CPU_ARM946E
687 default 0x00001000 if CPU_ARM740T
688 default 0x00002000 # default size for ARM946E-S
689 help
690 Some cores are synthesizable to have various sized cache. For
691 ARM946E-S case, it can vary from 0KB to 1MB.
692 To support such cache operations, it is efficient to know the size
693 before compile time.
694 If your SoC is configured to have a different size, define the value
695 here with proper conditions.
696
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LT
697config CPU_DCACHE_WRITETHROUGH
698 bool "Force write through D-cache"
28853ac8 699 depends on (CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020 || CPU_FA526) && !CPU_DCACHE_DISABLE
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LT
700 default y if CPU_ARM925T
701 help
702 Say Y here to use the data cache in writethrough mode. Unless you
703 specifically require this or are unsure, say N.
704
705config CPU_CACHE_ROUND_ROBIN
706 bool "Round robin I and D cache replacement algorithm"
f37f46eb 707 depends on (CPU_ARM926T || CPU_ARM946E || CPU_ARM1020) && (!CPU_ICACHE_DISABLE || !CPU_DCACHE_DISABLE)
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LT
708 help
709 Say Y here to use the predictable round-robin cache replacement
710 policy. Unless you specifically require this or are unsure, say N.
711
712config CPU_BPREDICT_DISABLE
713 bool "Disable branch prediction"
542f869f 714 depends on CPU_ARM1020 || CPU_V6 || CPU_MOHAWK || CPU_XSC3 || CPU_V7 || CPU_FA526
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LT
715 help
716 Say Y here to disable branch prediction. If unsure, say N.
2d2669b6 717
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NP
718config TLS_REG_EMUL
719 bool
4b0e07a5 720 help
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NP
721 An SMP system using a pre-ARMv6 processor (there are apparently
722 a few prototypes like that in existence) and therefore access to
723 that required register must be emulated.
4b0e07a5 724
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NP
725config HAS_TLS_REG
726 bool
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NP
727 depends on !TLS_REG_EMUL
728 default y if SMP || CPU_32v7
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NP
729 help
730 This selects support for the CP15 thread register.
70489c88
NP
731 It is defined to be available on some ARMv6 processors (including
732 all SMP capable ARMv6's) or later processors. User space may
733 assume directly accessing that register and always obtain the
734 expected value only on ARMv7 and above.
2d2669b6 735
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NP
736config NEEDS_SYSCALL_FOR_CMPXCHG
737 bool
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NP
738 help
739 SMP on a pre-ARMv6 processor? Well OK then.
740 Forget about fast user space cmpxchg support.
741 It is just not possible.
742
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CM
743config OUTER_CACHE
744 bool
382266ad 745
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LB
746config CACHE_FEROCEON_L2
747 bool "Enable the Feroceon L2 cache controller"
794d15b2 748 depends on ARCH_KIRKWOOD || ARCH_MV78XX0
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LB
749 default y
750 select OUTER_CACHE
751 help
752 This option enables the Feroceon L2 cache controller.
753
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RS
754config CACHE_FEROCEON_L2_WRITETHROUGH
755 bool "Force Feroceon L2 cache write through"
756 depends on CACHE_FEROCEON_L2
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RS
757 help
758 Say Y here to use the Feroceon L2 cache in writethrough mode.
759 Unless you specifically require this, say N for writeback mode.
760
382266ad 761config CACHE_L2X0
ba927951 762 bool "Enable the L2x0 outer cache controller"
cb88214d 763 depends on REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || MACH_REALVIEW_PB1176 || \
0b260fd4 764 REALVIEW_EB_A9MP || ARCH_MX35 || ARCH_MX31 || MACH_REALVIEW_PBX || ARCH_NOMADIK
ba927951 765 default y
382266ad 766 select OUTER_CACHE
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CM
767 help
768 This option enables the L2x0 PrimeCell.
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EM
769
770config CACHE_XSC3L2
771 bool "Enable the L2 cache on XScale3"
772 depends on CPU_XSC3
773 default y
774 select OUTER_CACHE
775 help
776 This option enables the L2 cache on XScale3.
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KS
777
778config ARM_L1_CACHE_SHIFT
779 int
780 default 6 if ARCH_OMAP3
781 default 5