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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
48d7927b 20 select CPU_PABRT_NOIFAR
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
4a1fd556 34 select CPU_PABRT_NOIFAR
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
48d7927b 52 select CPU_PABRT_NOIFAR
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
48d7927b 67 select CPU_PABRT_NOIFAR
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
4a1fd556 86 select CPU_PABRT_NOIFAR
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
4a1fd556 103 select CPU_PABRT_NOIFAR
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
48d7927b 117 select CPU_PABRT_NOIFAR
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
48d7927b 138 select CPU_PABRT_NOIFAR
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
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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
48d7927b 157 select CPU_PABRT_NOIFAR
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
48d7927b 176 select CPU_PABRT_NOIFAR
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
194 select CPU_PABRT_NOIFAR
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
4a1fd556 213 select CPU_PABRT_NOIFAR
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
4a1fd556 231 select CPU_PABRT_NOIFAR
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
48d7927b 247 select CPU_PABRT_NOIFAR
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
48d7927b 265 select CPU_PABRT_NOIFAR
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
48d7927b 278 select CPU_PABRT_NOIFAR
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
48d7927b 296 select CPU_PABRT_NOIFAR
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
48d7927b 314 select CPU_PABRT_NOIFAR
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
48d7927b 334 select CPU_PABRT_NOIFAR
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
48d7927b 345 select CPU_PABRT_NOIFAR
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
4a1fd556 355 select CPU_PABRT_NOIFAR
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
366 select CPU_PABRT_NOIFAR
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
48d7927b 377 select CPU_PABRT_NOIFAR
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
48d7927b 397 select CPU_PABRT_NOIFAR
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
48d7927b 423 select CPU_PABRT_IFAR
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
48d7927b
PB
485config CPU_PABRT_IFAR
486 bool
487
488config CPU_PABRT_NOIFAR
489 bool
490
1da177e4
LT
491# The cache model
492config CPU_CACHE_V3
493 bool
494
495config CPU_CACHE_V4
496 bool
497
498config CPU_CACHE_V4WT
499 bool
500
501config CPU_CACHE_V4WB
502 bool
503
504config CPU_CACHE_V6
505 bool
506
23688e99
CM
507config CPU_CACHE_V7
508 bool
509
1da177e4
LT
510config CPU_CACHE_VIVT
511 bool
512
513config CPU_CACHE_VIPT
514 bool
515
28853ac8
PZ
516config CPU_CACHE_FA
517 bool
518
f9c21a6e 519if MMU
1da177e4
LT
520# The copy-page model
521config CPU_COPY_V3
522 bool
523
524config CPU_COPY_V4WT
525 bool
526
527config CPU_COPY_V4WB
528 bool
529
0ed15071
LB
530config CPU_COPY_FEROCEON
531 bool
532
28853ac8
PZ
533config CPU_COPY_FA
534 bool
535
1da177e4
LT
536config CPU_COPY_V6
537 bool
538
539# This selects the TLB model
540config CPU_TLB_V3
541 bool
542 help
543 ARM Architecture Version 3 TLB.
544
545config CPU_TLB_V4WT
546 bool
547 help
548 ARM Architecture Version 4 TLB with writethrough cache.
549
550config CPU_TLB_V4WB
551 bool
552 help
553 ARM Architecture Version 4 TLB with writeback cache.
554
555config CPU_TLB_V4WBI
556 bool
557 help
558 ARM Architecture Version 4 TLB with writeback cache and invalidate
559 instruction cache entry.
560
99c6dc11
LB
561config CPU_TLB_FEROCEON
562 bool
563 help
564 Feroceon TLB (v4wbi with non-outer-cachable page table walks).
565
28853ac8
PZ
566config CPU_TLB_FA
567 bool
568 help
569 Faraday ARM FA526 architecture, unified TLB with writeback cache
570 and invalidate instruction cache entry. Branch target buffer is
571 also supported.
572
1da177e4
LT
573config CPU_TLB_V6
574 bool
575
2ccdd1e7
CM
576config CPU_TLB_V7
577 bool
578
f9c21a6e
HC
579endif
580
516793c6
RK
581config CPU_HAS_ASID
582 bool
583 help
584 This indicates whether the CPU has the ASID register; used to
585 tag TLB and possibly cache entries.
586
fefdaa06
HC
587config CPU_CP15
588 bool
589 help
590 Processor has the CP15 register.
591
592config CPU_CP15_MMU
593 bool
594 select CPU_CP15
595 help
596 Processor has the CP15 register, which has MMU related registers.
597
598config CPU_CP15_MPU
599 bool
600 select CPU_CP15
601 help
602 Processor has the CP15 register, which has MPU related registers.
603
23bdf86a
LB
604#
605# CPU supports 36-bit I/O
606#
607config IO_36
608 bool
609
1da177e4
LT
610comment "Processor Features"
611
612config ARM_THUMB
613 bool "Support Thumb user binaries"
49cbe786 614 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
615 default y
616 help
617 Say Y if you want to include kernel support for running user space
618 Thumb binaries.
619
620 The Thumb instruction set is a compressed form of the standard ARM
621 instruction set resulting in smaller binaries at the expense of
622 slightly less efficient code.
623
624 If you don't know what this all is, saying Y is a safe choice.
625
d7f864be
CM
626config ARM_THUMBEE
627 bool "Enable ThumbEE CPU extension"
628 depends on CPU_V7
629 help
630 Say Y here if you have a CPU with the ThumbEE extension and code to
631 make use of it. Say N for code that can run on CPUs without ThumbEE.
632
1da177e4
LT
633config CPU_BIG_ENDIAN
634 bool "Build big-endian kernel"
635 depends on ARCH_SUPPORTS_BIG_ENDIAN
636 help
637 Say Y if you plan on running a kernel in big-endian mode.
638 Note that your board must be properly built and your board
639 port must properly enable any big-endian related features
640 of your chipset/board/processor.
641
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CM
642config CPU_ENDIAN_BE8
643 bool
644 depends on CPU_BIG_ENDIAN
645 default CPU_V6 || CPU_V7
646 help
647 Support for the BE-8 (big-endian) mode on ARMv6 and ARMv7 processors.
648
649config CPU_ENDIAN_BE32
650 bool
651 depends on CPU_BIG_ENDIAN
652 default !CPU_ENDIAN_BE8
653 help
654 Support for the BE-32 (big-endian) mode on pre-ARMv6 processors.
655
6afd6fae 656config CPU_HIGH_VECTOR
6340aa61 657 depends on !MMU && CPU_CP15 && !CPU_ARM740T
6afd6fae 658 bool "Select the High exception vector"
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HC
659 help
660 Say Y here to select high exception vector(0xFFFF0000~).
661 The exception vector can be vary depending on the platform
662 design in nommu mode. If your platform needs to select
663 high exception vector, say Y.
664 Otherwise or if you are unsure, say N, and the low exception
665 vector (0x00000000~) will be used.
666
1da177e4 667config CPU_ICACHE_DISABLE
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HC
668 bool "Disable I-Cache (I-bit)"
669 depends on CPU_CP15 && !(CPU_ARM610 || CPU_ARM710 || CPU_ARM720T || CPU_ARM740T || CPU_XSCALE || CPU_XSC3)
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LT
670 help
671 Say Y here to disable the processor instruction cache. Unless
672 you have a reason not to or are unsure, say N.
673
674config CPU_DCACHE_DISABLE
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HC
675 bool "Disable D-Cache (C-bit)"
676 depends on CPU_CP15
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LT
677 help
678 Say Y here to disable the processor data cache. Unless
679 you have a reason not to or are unsure, say N.
680
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681config CPU_DCACHE_SIZE
682 hex
683 depends on CPU_ARM740T || CPU_ARM946E
684 default 0x00001000 if CPU_ARM740T
685 default 0x00002000 # default size for ARM946E-S
686 help
687 Some cores are synthesizable to have various sized cache. For
688 ARM946E-S case, it can vary from 0KB to 1MB.
689 To support such cache operations, it is efficient to know the size
690 before compile time.
691 If your SoC is configured to have a different size, define the value
692 here with proper conditions.
693
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LT
694config CPU_DCACHE_WRITETHROUGH
695 bool "Force write through D-cache"
28853ac8 696 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
697 default y if CPU_ARM925T
698 help
699 Say Y here to use the data cache in writethrough mode. Unless you
700 specifically require this or are unsure, say N.
701
702config CPU_CACHE_ROUND_ROBIN
703 bool "Round robin I and D cache replacement algorithm"
f37f46eb 704 depends on (CPU_ARM926T || CPU_ARM946E || CPU_ARM1020) && (!CPU_ICACHE_DISABLE || !CPU_DCACHE_DISABLE)
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LT
705 help
706 Say Y here to use the predictable round-robin cache replacement
707 policy. Unless you specifically require this or are unsure, say N.
708
709config CPU_BPREDICT_DISABLE
710 bool "Disable branch prediction"
542f869f 711 depends on CPU_ARM1020 || CPU_V6 || CPU_MOHAWK || CPU_XSC3 || CPU_V7 || CPU_FA526
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LT
712 help
713 Say Y here to disable branch prediction. If unsure, say N.
2d2669b6 714
4b0e07a5
NP
715config TLS_REG_EMUL
716 bool
4b0e07a5 717 help
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NP
718 An SMP system using a pre-ARMv6 processor (there are apparently
719 a few prototypes like that in existence) and therefore access to
720 that required register must be emulated.
4b0e07a5 721
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NP
722config HAS_TLS_REG
723 bool
70489c88
NP
724 depends on !TLS_REG_EMUL
725 default y if SMP || CPU_32v7
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NP
726 help
727 This selects support for the CP15 thread register.
70489c88
NP
728 It is defined to be available on some ARMv6 processors (including
729 all SMP capable ARMv6's) or later processors. User space may
730 assume directly accessing that register and always obtain the
731 expected value only on ARMv7 and above.
2d2669b6 732
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NP
733config NEEDS_SYSCALL_FOR_CMPXCHG
734 bool
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NP
735 help
736 SMP on a pre-ARMv6 processor? Well OK then.
737 Forget about fast user space cmpxchg support.
738 It is just not possible.
739
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CM
740config OUTER_CACHE
741 bool
382266ad 742
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LB
743config CACHE_FEROCEON_L2
744 bool "Enable the Feroceon L2 cache controller"
794d15b2 745 depends on ARCH_KIRKWOOD || ARCH_MV78XX0
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LB
746 default y
747 select OUTER_CACHE
748 help
749 This option enables the Feroceon L2 cache controller.
750
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RS
751config CACHE_FEROCEON_L2_WRITETHROUGH
752 bool "Force Feroceon L2 cache write through"
753 depends on CACHE_FEROCEON_L2
4360bb41
RS
754 help
755 Say Y here to use the Feroceon L2 cache in writethrough mode.
756 Unless you specifically require this, say N for writeback mode.
757
382266ad 758config CACHE_L2X0
ba927951 759 bool "Enable the L2x0 outer cache controller"
cb88214d 760 depends on REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || MACH_REALVIEW_PB1176 || \
0b260fd4 761 REALVIEW_EB_A9MP || ARCH_MX35 || ARCH_MX31 || MACH_REALVIEW_PBX || ARCH_NOMADIK
ba927951 762 default y
382266ad 763 select OUTER_CACHE
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CM
764 help
765 This option enables the L2x0 PrimeCell.
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EM
766
767config CACHE_XSC3L2
768 bool "Enable the L2 cache on XScale3"
769 depends on CPU_XSC3
770 default y
771 select OUTER_CACHE
772 help
773 This option enables the L2 cache on XScale3.
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KS
774
775config ARM_L1_CACHE_SHIFT
776 int
777 default 6 if ARCH_OMAP3
778 default 5