Kconfig 19.2 KB
Newer Older
L
Linus Torvalds 已提交
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
comment "Processor Type"

config CPU_32
	bool
	default y

# Select CPU types depending on the architecture selected.  This selects
# which CPUs we support in the kernel image, and the compiler instruction
# optimiser behaviour.

# ARM610
config CPU_ARM610
	bool "Support ARM610 processor"
	depends on ARCH_RPC
	select CPU_32v3
	select CPU_CACHE_V3
	select CPU_CACHE_VIVT
18
	select CPU_CP15_MMU
19 20
	select CPU_COPY_V3 if MMU
	select CPU_TLB_V3 if MMU
P
Paul Brook 已提交
21
	select CPU_PABRT_NOIFAR
L
Linus Torvalds 已提交
22 23 24 25 26 27 28
	help
	  The ARM610 is the successor to the ARM3 processor
	  and was produced by VLSI Technology Inc.

	  Say Y if you want support for the ARM610 processor.
	  Otherwise, say N.

29 30 31
# ARM7TDMI
config CPU_ARM7TDMI
	bool "Support ARM7TDMI processor"
32
	depends on !MMU
33 34
	select CPU_32v4T
	select CPU_ABRT_LV4T
35
	select CPU_PABRT_NOIFAR
36 37 38 39 40 41 42 43
	select CPU_CACHE_V4
	help
	  A 32-bit RISC microprocessor based on the ARM7 processor core
	  which has no memory control unit and cache.

	  Say Y if you want support for the ARM7TDMI processor.
	  Otherwise, say N.

L
Linus Torvalds 已提交
44 45 46 47 48 49 50
# ARM710
config CPU_ARM710
	bool "Support ARM710 processor" if !ARCH_CLPS7500 && ARCH_RPC
	default y if ARCH_CLPS7500
	select CPU_32v3
	select CPU_CACHE_V3
	select CPU_CACHE_VIVT
51
	select CPU_CP15_MMU
52 53
	select CPU_COPY_V3 if MMU
	select CPU_TLB_V3 if MMU
P
Paul Brook 已提交
54
	select CPU_PABRT_NOIFAR
L
Linus Torvalds 已提交
55 56 57 58 59 60 61 62 63 64 65 66 67
	help
	  A 32-bit RISC microprocessor based on the ARM7 processor core
	  designed by Advanced RISC Machines Ltd. The ARM710 is the
	  successor to the ARM610 processor. It was released in
	  July 1994 by VLSI Technology Inc.

	  Say Y if you want support for the ARM710 processor.
	  Otherwise, say N.

# ARM720T
config CPU_ARM720T
	bool "Support ARM720T processor" if !ARCH_CLPS711X && !ARCH_L7200 && !ARCH_CDB89712 && ARCH_INTEGRATOR
	default y if ARCH_CLPS711X || ARCH_L7200 || ARCH_CDB89712 || ARCH_H720X
68
	select CPU_32v4T
L
Linus Torvalds 已提交
69
	select CPU_ABRT_LV4T
P
Paul Brook 已提交
70
	select CPU_PABRT_NOIFAR
L
Linus Torvalds 已提交
71 72
	select CPU_CACHE_V4
	select CPU_CACHE_VIVT
73
	select CPU_CP15_MMU
74 75
	select CPU_COPY_V4WT if MMU
	select CPU_TLB_V4WT if MMU
L
Linus Torvalds 已提交
76 77 78 79 80 81 82
	help
	  A 32-bit RISC processor with 8kByte Cache, Write Buffer and
	  MMU built around an ARM7TDMI core.

	  Say Y if you want support for the ARM720T processor.
	  Otherwise, say N.

83 84 85
# ARM740T
config CPU_ARM740T
	bool "Support ARM740T processor" if ARCH_INTEGRATOR
86
	depends on !MMU
87 88
	select CPU_32v4T
	select CPU_ABRT_LV4T
89
	select CPU_PABRT_NOIFAR
90 91 92 93 94 95 96 97 98 99
	select CPU_CACHE_V3	# although the core is v4t
	select CPU_CP15_MPU
	help
	  A 32-bit RISC processor with 8KB cache or 4KB variants,
	  write buffer and MPU(Protection Unit) built around
	  an ARM7TDMI core.

	  Say Y if you want support for the ARM740T processor.
	  Otherwise, say N.

100 101 102
# ARM9TDMI
config CPU_ARM9TDMI
	bool "Support ARM9TDMI processor"
103
	depends on !MMU
104
	select CPU_32v4T
105
	select CPU_ABRT_NOMMU
106
	select CPU_PABRT_NOIFAR
107 108 109 110 111 112 113 114
	select CPU_CACHE_V4
	help
	  A 32-bit RISC microprocessor based on the ARM9 processor core
	  which has no memory control unit and cache.

	  Say Y if you want support for the ARM9TDMI processor.
	  Otherwise, say N.

L
Linus Torvalds 已提交
115 116
# ARM920T
config CPU_ARM920T
117 118 119
	bool "Support ARM920T processor"
	depends on ARCH_EP93XX || ARCH_INTEGRATOR || CPU_S3C2410 || CPU_S3C2440 || CPU_S3C2442 || ARCH_IMX || ARCH_AAEC2000 || ARCH_AT91RM9200
	default y if CPU_S3C2410 || CPU_S3C2440 || CPU_S3C2442 || ARCH_AT91RM9200
120
	select CPU_32v4T
L
Linus Torvalds 已提交
121
	select CPU_ABRT_EV4T
P
Paul Brook 已提交
122
	select CPU_PABRT_NOIFAR
L
Linus Torvalds 已提交
123 124
	select CPU_CACHE_V4WT
	select CPU_CACHE_VIVT
125
	select CPU_CP15_MMU
126 127
	select CPU_COPY_V4WB if MMU
	select CPU_TLB_V4WBI if MMU
L
Linus Torvalds 已提交
128 129 130 131 132 133 134 135 136 137 138 139 140
	help
	  The ARM920T is licensed to be produced by numerous vendors,
	  and is used in the Maverick EP9312 and the Samsung S3C2410.

	  More information on the Maverick EP9312 at
	  <http://linuxdevices.com/products/PD2382866068.html>.

	  Say Y if you want support for the ARM920T processor.
	  Otherwise, say N.

# ARM922T
config CPU_ARM922T
	bool "Support ARM922T processor" if ARCH_INTEGRATOR
141 142
	depends on ARCH_LH7A40X || ARCH_INTEGRATOR || ARCH_KS8695
	default y if ARCH_LH7A40X || ARCH_KS8695
143
	select CPU_32v4T
L
Linus Torvalds 已提交
144
	select CPU_ABRT_EV4T
P
Paul Brook 已提交
145
	select CPU_PABRT_NOIFAR
L
Linus Torvalds 已提交
146 147
	select CPU_CACHE_V4WT
	select CPU_CACHE_VIVT
148
	select CPU_CP15_MMU
149 150
	select CPU_COPY_V4WB if MMU
	select CPU_TLB_V4WBI if MMU
L
Linus Torvalds 已提交
151 152 153
	help
	  The ARM922T is a version of the ARM920T, but with smaller
	  instruction and data caches. It is used in Altera's
154
	  Excalibur XA device family and Micrel's KS8695 Centaur.
L
Linus Torvalds 已提交
155 156 157 158 159 160

	  Say Y if you want support for the ARM922T processor.
	  Otherwise, say N.

# ARM925T
config CPU_ARM925T
161
 	bool "Support ARM925T processor" if ARCH_OMAP1
162 163
 	depends on ARCH_OMAP15XX
 	default y if ARCH_OMAP15XX
164
	select CPU_32v4T
L
Linus Torvalds 已提交
165
	select CPU_ABRT_EV4T
P
Paul Brook 已提交
166
	select CPU_PABRT_NOIFAR
L
Linus Torvalds 已提交
167 168
	select CPU_CACHE_V4WT
	select CPU_CACHE_VIVT
169
	select CPU_CP15_MMU
170 171
	select CPU_COPY_V4WB if MMU
	select CPU_TLB_V4WBI if MMU
L
Linus Torvalds 已提交
172 173 174 175 176 177 178 179 180 181
 	help
 	  The ARM925T is a mix between the ARM920T and ARM926T, but with
	  different instruction and data caches. It is used in TI's OMAP
 	  device family.

 	  Say Y if you want support for the ARM925T processor.
 	  Otherwise, say N.

# ARM926T
config CPU_ARM926T
182
	bool "Support ARM926T processor"
R
Russell King 已提交
183 184 185 186 187 188 189
	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_AT91SAM9G20 || ARCH_AT91CAP9 || \
190
		ARCH_NS9XXX || ARCH_DAVINCI || ARCH_MX2
R
Russell King 已提交
191 192 193 194 195 196 197
	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_AT91SAM9G20 || ARCH_AT91CAP9 || \
		ARCH_NS9XXX || ARCH_DAVINCI || ARCH_MX2
L
Linus Torvalds 已提交
198 199
	select CPU_32v5
	select CPU_ABRT_EV5TJ
P
Paul Brook 已提交
200
	select CPU_PABRT_NOIFAR
L
Linus Torvalds 已提交
201
	select CPU_CACHE_VIVT
202
	select CPU_CP15_MMU
203 204
	select CPU_COPY_V4WB if MMU
	select CPU_TLB_V4WBI if MMU
L
Linus Torvalds 已提交
205 206 207 208 209 210 211 212
	help
	  This is a variant of the ARM920.  It has slightly different
	  instruction sequences for cache and TLB operations.  Curiously,
	  there is no documentation on it at the ARM corporate website.

	  Say Y if you want support for the ARM926T processor.
	  Otherwise, say N.

213 214 215
# ARM940T
config CPU_ARM940T
	bool "Support ARM940T processor" if ARCH_INTEGRATOR
216
	depends on !MMU
217
	select CPU_32v4T
218
	select CPU_ABRT_NOMMU
219
	select CPU_PABRT_NOIFAR
220 221 222 223
	select CPU_CACHE_VIVT
	select CPU_CP15_MPU
	help
	  ARM940T is a member of the ARM9TDMI family of general-
M
Matt LaPlante 已提交
224
	  purpose microprocessors with MPU and separate 4KB
225 226 227 228 229 230
	  instruction and 4KB data cases, each with a 4-word line
	  length.

	  Say Y if you want support for the ARM940T processor.
	  Otherwise, say N.

231 232 233
# ARM946E-S
config CPU_ARM946E
	bool "Support ARM946E-S processor" if ARCH_INTEGRATOR
234
	depends on !MMU
235
	select CPU_32v5
236
	select CPU_ABRT_NOMMU
237
	select CPU_PABRT_NOIFAR
238 239 240 241 242 243 244 245 246 247
	select CPU_CACHE_VIVT
	select CPU_CP15_MPU
	help
	  ARM946E-S is a member of the ARM9E-S family of high-
	  performance, 32-bit system-on-chip processor solutions.
	  The TCM and ARMv5TE 32-bit instruction set is supported.

	  Say Y if you want support for the ARM946E-S processor.
	  Otherwise, say N.

L
Linus Torvalds 已提交
248 249 250 251 252 253
# ARM1020 - needs validating
config CPU_ARM1020
	bool "Support ARM1020T (rev 0) processor"
	depends on ARCH_INTEGRATOR
	select CPU_32v5
	select CPU_ABRT_EV4T
P
Paul Brook 已提交
254
	select CPU_PABRT_NOIFAR
L
Linus Torvalds 已提交
255 256
	select CPU_CACHE_V4WT
	select CPU_CACHE_VIVT
257
	select CPU_CP15_MMU
258 259
	select CPU_COPY_V4WB if MMU
	select CPU_TLB_V4WBI if MMU
L
Linus Torvalds 已提交
260 261 262 263 264 265 266 267 268 269 270 271 272
	help
	  The ARM1020 is the 32K cached version of the ARM10 processor,
	  with an addition of a floating-point unit.

	  Say Y if you want support for the ARM1020 processor.
	  Otherwise, say N.

# ARM1020E - needs validating
config CPU_ARM1020E
	bool "Support ARM1020E processor"
	depends on ARCH_INTEGRATOR
	select CPU_32v5
	select CPU_ABRT_EV4T
P
Paul Brook 已提交
273
	select CPU_PABRT_NOIFAR
L
Linus Torvalds 已提交
274 275
	select CPU_CACHE_V4WT
	select CPU_CACHE_VIVT
276
	select CPU_CP15_MMU
277 278
	select CPU_COPY_V4WB if MMU
	select CPU_TLB_V4WBI if MMU
L
Linus Torvalds 已提交
279 280 281 282 283 284 285 286
	depends on n

# ARM1022E
config CPU_ARM1022
	bool "Support ARM1022E processor"
	depends on ARCH_INTEGRATOR
	select CPU_32v5
	select CPU_ABRT_EV4T
P
Paul Brook 已提交
287
	select CPU_PABRT_NOIFAR
L
Linus Torvalds 已提交
288
	select CPU_CACHE_VIVT
289
	select CPU_CP15_MMU
290 291
	select CPU_COPY_V4WB if MMU # can probably do better
	select CPU_TLB_V4WBI if MMU
L
Linus Torvalds 已提交
292 293 294 295 296 297 298 299 300 301 302 303 304 305
	help
	  The ARM1022E is an implementation of the ARMv5TE architecture
	  based upon the ARM10 integer core with a 16KiB L1 Harvard cache,
	  embedded trace macrocell, and a floating-point unit.

	  Say Y if you want support for the ARM1022E processor.
	  Otherwise, say N.

# ARM1026EJ-S
config CPU_ARM1026
	bool "Support ARM1026EJ-S processor"
	depends on ARCH_INTEGRATOR
	select CPU_32v5
	select CPU_ABRT_EV5T # But need Jazelle, but EV5TJ ignores bit 10
P
Paul Brook 已提交
306
	select CPU_PABRT_NOIFAR
L
Linus Torvalds 已提交
307
	select CPU_CACHE_VIVT
308
	select CPU_CP15_MMU
309 310
	select CPU_COPY_V4WB if MMU # can probably do better
	select CPU_TLB_V4WBI if MMU
L
Linus Torvalds 已提交
311 312 313 314 315 316 317 318 319 320 321 322 323 324
	help
	  The ARM1026EJ-S is an implementation of the ARMv5TEJ architecture
	  based upon the ARM10 integer core.

	  Say Y if you want support for the ARM1026EJ-S processor.
	  Otherwise, say N.

# SA110
config CPU_SA110
	bool "Support StrongARM(R) SA-110 processor" if !ARCH_EBSA110 && !FOOTBRIDGE && !ARCH_TBOX && !ARCH_SHARK && !ARCH_NEXUSPCI && ARCH_RPC
	default y if ARCH_EBSA110 || FOOTBRIDGE || ARCH_TBOX || ARCH_SHARK || ARCH_NEXUSPCI
	select CPU_32v3 if ARCH_RPC
	select CPU_32v4 if !ARCH_RPC
	select CPU_ABRT_EV4
P
Paul Brook 已提交
325
	select CPU_PABRT_NOIFAR
L
Linus Torvalds 已提交
326 327
	select CPU_CACHE_V4WB
	select CPU_CACHE_VIVT
328
	select CPU_CP15_MMU
329 330
	select CPU_COPY_V4WB if MMU
	select CPU_TLB_V4WB if MMU
L
Linus Torvalds 已提交
331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346
	help
	  The Intel StrongARM(R) SA-110 is a 32-bit microprocessor and
	  is available at five speeds ranging from 100 MHz to 233 MHz.
	  More information is available at
	  <http://developer.intel.com/design/strong/sa110.htm>.

	  Say Y if you want support for the SA-110 processor.
	  Otherwise, say N.

# SA1100
config CPU_SA1100
	bool
	depends on ARCH_SA1100
	default y
	select CPU_32v4
	select CPU_ABRT_EV4
P
Paul Brook 已提交
347
	select CPU_PABRT_NOIFAR
L
Linus Torvalds 已提交
348 349
	select CPU_CACHE_V4WB
	select CPU_CACHE_VIVT
350
	select CPU_CP15_MMU
351
	select CPU_TLB_V4WB if MMU
L
Linus Torvalds 已提交
352 353 354 355

# XScale
config CPU_XSCALE
	bool
356
	depends on ARCH_IOP32X || ARCH_IOP33X || PXA25x || PXA27x || ARCH_IXP4XX || ARCH_IXP2000
L
Linus Torvalds 已提交
357 358 359
	default y
	select CPU_32v5
	select CPU_ABRT_EV5T
P
Paul Brook 已提交
360
	select CPU_PABRT_NOIFAR
L
Linus Torvalds 已提交
361
	select CPU_CACHE_VIVT
362
	select CPU_CP15_MMU
363
	select CPU_TLB_V4WBI if MMU
L
Linus Torvalds 已提交
364

365 366 367
# XScale Core Version 3
config CPU_XSC3
	bool
E
eric miao 已提交
368
	depends on ARCH_IXP23XX || ARCH_IOP13XX || PXA3xx
369 370 371
	default y
	select CPU_32v5
	select CPU_ABRT_EV5T
372
	select CPU_PABRT_NOIFAR
373
	select CPU_CACHE_VIVT
374
	select CPU_CP15_MMU
375
	select CPU_TLB_V4WBI if MMU
376 377
	select IO_36

378 379 380
# Feroceon
config CPU_FEROCEON
	bool
381
	depends on ARCH_ORION5X || ARCH_LOKI || ARCH_KIRKWOOD || ARCH_MV78XX0
382 383 384
	default y
	select CPU_32v5
	select CPU_ABRT_EV5T
P
Paul Brook 已提交
385
	select CPU_PABRT_NOIFAR
386 387
	select CPU_CACHE_VIVT
	select CPU_CP15_MMU
388
	select CPU_COPY_FEROCEON if MMU
389
	select CPU_TLB_FEROCEON if MMU
390

391 392 393 394 395 396 397 398 399
config CPU_FEROCEON_OLD_ID
	bool "Accept early Feroceon cores with an ARM926 ID"
	depends on CPU_FEROCEON && !CPU_ARM926T
	default y
	help
	  This enables the usage of some old Feroceon cores
	  for which the CPU ID is equal to the ARM926 ID.
	  Relevant for Feroceon-1850 and early Feroceon-2850.

L
Linus Torvalds 已提交
400 401 402
# ARMv6
config CPU_V6
	bool "Support ARM V6 processor"
403
	depends on ARCH_INTEGRATOR || MACH_REALVIEW_EB || ARCH_OMAP2 || ARCH_MX3 || ARCH_MSM7X00A || MACH_REALVIEW_PB11MP || MACH_REALVIEW_PB1176
404
	default y if ARCH_MX3
405
	default y if ARCH_MSM7X00A
L
Linus Torvalds 已提交
406 407
	select CPU_32v6
	select CPU_ABRT_EV6
P
Paul Brook 已提交
408
	select CPU_PABRT_NOIFAR
L
Linus Torvalds 已提交
409 410
	select CPU_CACHE_V6
	select CPU_CACHE_VIPT
411
	select CPU_CP15_MMU
412
	select CPU_HAS_ASID if MMU
413 414
	select CPU_COPY_V6 if MMU
	select CPU_TLB_V6 if MMU
L
Linus Torvalds 已提交
415

416 417 418 419
# ARMv6k
config CPU_32v6K
	bool "Support ARM V6K processor extensions" if !SMP
	depends on CPU_V6
420
	default y if SMP && !ARCH_MX3
421 422 423 424 425 426 427
	help
	  Say Y here if your ARMv6 processor supports the 'K' extension.
	  This enables the kernel to use some instructions not present
	  on previous processors, and as such a kernel build with this
	  enabled will not boot on processors with do not support these
	  instructions.

428 429 430
# ARMv7
config CPU_V7
	bool "Support ARM V7 processor"
431
	depends on ARCH_INTEGRATOR || MACH_REALVIEW_EB
432 433 434
	select CPU_32v6K
	select CPU_32v7
	select CPU_ABRT_EV7
P
Paul Brook 已提交
435
	select CPU_PABRT_IFAR
436 437 438
	select CPU_CACHE_V7
	select CPU_CACHE_VIPT
	select CPU_CP15_MMU
439
	select CPU_HAS_ASID if MMU
440
	select CPU_COPY_V6 if MMU
441
	select CPU_TLB_V7 if MMU
442

L
Linus Torvalds 已提交
443 444 445 446
# Figure out what processor architecture version we should be using.
# This defines the compiler instruction set which depends on the machine type.
config CPU_32v3
	bool
447
	select TLS_REG_EMUL if SMP || !MMU
448
	select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
L
Linus Torvalds 已提交
449 450 451

config CPU_32v4
	bool
452
	select TLS_REG_EMUL if SMP || !MMU
453
	select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
L
Linus Torvalds 已提交
454

455 456 457 458 459
config CPU_32v4T
	bool
	select TLS_REG_EMUL if SMP || !MMU
	select NEEDS_SYSCALL_FOR_CMPXCHG if SMP

L
Linus Torvalds 已提交
460 461
config CPU_32v5
	bool
462
	select TLS_REG_EMUL if SMP || !MMU
463
	select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
L
Linus Torvalds 已提交
464 465 466

config CPU_32v6
	bool
467
	select TLS_REG_EMUL if !CPU_32v6K && !MMU
L
Linus Torvalds 已提交
468

469 470 471
config CPU_32v7
	bool

L
Linus Torvalds 已提交
472
# The abort model
473 474 475
config CPU_ABRT_NOMMU
	bool

L
Linus Torvalds 已提交
476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493
config CPU_ABRT_EV4
	bool

config CPU_ABRT_EV4T
	bool

config CPU_ABRT_LV4T
	bool

config CPU_ABRT_EV5T
	bool

config CPU_ABRT_EV5TJ
	bool

config CPU_ABRT_EV6
	bool

494 495 496
config CPU_ABRT_EV7
	bool

P
Paul Brook 已提交
497 498 499 500 501 502
config CPU_PABRT_IFAR
	bool

config CPU_PABRT_NOIFAR
	bool

L
Linus Torvalds 已提交
503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518
# The cache model
config CPU_CACHE_V3
	bool

config CPU_CACHE_V4
	bool

config CPU_CACHE_V4WT
	bool

config CPU_CACHE_V4WB
	bool

config CPU_CACHE_V6
	bool

519 520 521
config CPU_CACHE_V7
	bool

L
Linus Torvalds 已提交
522 523 524 525 526 527
config CPU_CACHE_VIVT
	bool

config CPU_CACHE_VIPT
	bool

528
if MMU
L
Linus Torvalds 已提交
529 530 531 532 533 534 535 536 537 538
# The copy-page model
config CPU_COPY_V3
	bool

config CPU_COPY_V4WT
	bool

config CPU_COPY_V4WB
	bool

539 540 541
config CPU_COPY_FEROCEON
	bool

L
Linus Torvalds 已提交
542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566
config CPU_COPY_V6
	bool

# This selects the TLB model
config CPU_TLB_V3
	bool
	help
	  ARM Architecture Version 3 TLB.

config CPU_TLB_V4WT
	bool
	help
	  ARM Architecture Version 4 TLB with writethrough cache.

config CPU_TLB_V4WB
	bool
	help
	  ARM Architecture Version 4 TLB with writeback cache.

config CPU_TLB_V4WBI
	bool
	help
	  ARM Architecture Version 4 TLB with writeback cache and invalidate
	  instruction cache entry.

567 568 569 570 571
config CPU_TLB_FEROCEON
	bool
	help
	  Feroceon TLB (v4wbi with non-outer-cachable page table walks).

L
Linus Torvalds 已提交
572 573 574
config CPU_TLB_V6
	bool

575 576 577
config CPU_TLB_V7
	bool

578 579
endif

580 581 582 583 584 585
config CPU_HAS_ASID
	bool
	help
	  This indicates whether the CPU has the ASID register; used to
	  tag TLB and possibly cache entries.

586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602
config CPU_CP15
	bool
	help
	  Processor has the CP15 register.

config CPU_CP15_MMU
	bool
	select CPU_CP15
	help
	  Processor has the CP15 register, which has MMU related registers.

config CPU_CP15_MPU
	bool
	select CPU_CP15
	help
	  Processor has the CP15 register, which has MPU related registers.

603 604 605 606 607 608
#
# CPU supports 36-bit I/O
#
config IO_36
	bool

L
Linus Torvalds 已提交
609 610 611 612
comment "Processor Features"

config ARM_THUMB
	bool "Support Thumb user binaries"
613
	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 || CPU_FEROCEON
L
Linus Torvalds 已提交
614 615 616 617 618 619 620 621 622 623 624
	default y
	help
	  Say Y if you want to include kernel support for running user space
	  Thumb binaries.

	  The Thumb instruction set is a compressed form of the standard ARM
	  instruction set resulting in smaller binaries at the expense of
	  slightly less efficient code.

	  If you don't know what this all is, saying Y is a safe choice.

625 626 627 628 629 630 631
config ARM_THUMBEE
	bool "Enable ThumbEE CPU extension"
	depends on CPU_V7
	help
	  Say Y here if you have a CPU with the ThumbEE extension and code to
	  make use of it. Say N for code that can run on CPUs without ThumbEE.

L
Linus Torvalds 已提交
632 633 634 635 636 637 638 639 640
config CPU_BIG_ENDIAN
	bool "Build big-endian kernel"
	depends on ARCH_SUPPORTS_BIG_ENDIAN
	help
	  Say Y if you plan on running a kernel in big-endian mode.
	  Note that your board must be properly built and your board
	  port must properly enable any big-endian related features
	  of your chipset/board/processor.

641
config CPU_HIGH_VECTOR
642
	depends on !MMU && CPU_CP15 && !CPU_ARM740T
643 644 645 646 647 648 649 650 651 652
	bool "Select the High exception vector"
	default n
	help
	  Say Y here to select high exception vector(0xFFFF0000~).
	  The exception vector can be vary depending on the platform
	  design in nommu mode. If your platform needs to select
	  high exception vector, say Y.
	  Otherwise or if you are unsure, say N, and the low exception
	  vector (0x00000000~) will be used.

L
Linus Torvalds 已提交
653
config CPU_ICACHE_DISABLE
654 655
	bool "Disable I-Cache (I-bit)"
	depends on CPU_CP15 && !(CPU_ARM610 || CPU_ARM710 || CPU_ARM720T || CPU_ARM740T || CPU_XSCALE || CPU_XSC3)
L
Linus Torvalds 已提交
656 657 658 659 660
	help
	  Say Y here to disable the processor instruction cache. Unless
	  you have a reason not to or are unsure, say N.

config CPU_DCACHE_DISABLE
661 662
	bool "Disable D-Cache (C-bit)"
	depends on CPU_CP15
L
Linus Torvalds 已提交
663 664 665 666
	help
	  Say Y here to disable the processor data cache. Unless
	  you have a reason not to or are unsure, say N.

667 668 669 670 671 672 673 674 675 676 677 678 679
config CPU_DCACHE_SIZE
	hex
	depends on CPU_ARM740T || CPU_ARM946E
	default 0x00001000 if CPU_ARM740T
	default 0x00002000 # default size for ARM946E-S
	help
	  Some cores are synthesizable to have various sized cache. For
	  ARM946E-S case, it can vary from 0KB to 1MB.
	  To support such cache operations, it is efficient to know the size
	  before compile time.
	  If your SoC is configured to have a different size, define the value
	  here with proper conditions.

L
Linus Torvalds 已提交
680 681
config CPU_DCACHE_WRITETHROUGH
	bool "Force write through D-cache"
682
	depends on (CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020) && !CPU_DCACHE_DISABLE
L
Linus Torvalds 已提交
683 684 685 686 687 688 689
	default y if CPU_ARM925T
	help
	  Say Y here to use the data cache in writethrough mode. Unless you
	  specifically require this or are unsure, say N.

config CPU_CACHE_ROUND_ROBIN
	bool "Round robin I and D cache replacement algorithm"
690
	depends on (CPU_ARM926T || CPU_ARM946E || CPU_ARM1020) && (!CPU_ICACHE_DISABLE || !CPU_DCACHE_DISABLE)
L
Linus Torvalds 已提交
691 692 693 694 695 696
	help
	  Say Y here to use the predictable round-robin cache replacement
	  policy.  Unless you specifically require this or are unsure, say N.

config CPU_BPREDICT_DISABLE
	bool "Disable branch prediction"
697
	depends on CPU_ARM1020 || CPU_V6 || CPU_XSC3 || CPU_V7
L
Linus Torvalds 已提交
698 699
	help
	  Say Y here to disable branch prediction.  If unsure, say N.
700

701 702 703
config TLS_REG_EMUL
	bool
	help
704 705 706
	  An SMP system using a pre-ARMv6 processor (there are apparently
	  a few prototypes like that in existence) and therefore access to
	  that required register must be emulated.
707

708 709
config HAS_TLS_REG
	bool
710 711
	depends on !TLS_REG_EMUL
	default y if SMP || CPU_32v7
712 713
	help
	  This selects support for the CP15 thread register.
714 715 716 717
	  It is defined to be available on some ARMv6 processors (including
	  all SMP capable ARMv6's) or later processors.  User space may
	  assume directly accessing that register and always obtain the
	  expected value only on ARMv7 and above.
718

719 720 721 722 723 724 725
config NEEDS_SYSCALL_FOR_CMPXCHG
	bool
	help
	  SMP on a pre-ARMv6 processor?  Well OK then.
	  Forget about fast user space cmpxchg support.
	  It is just not possible.

726 727 728
config OUTER_CACHE
	bool
	default n
729

730 731
config CACHE_FEROCEON_L2
	bool "Enable the Feroceon L2 cache controller"
732
	depends on ARCH_KIRKWOOD || ARCH_MV78XX0
733 734 735 736 737
	default y
	select OUTER_CACHE
	help
	  This option enables the Feroceon L2 cache controller.

738
config CACHE_L2X0
739 740 741
	bool "Enable the L2x0 outer cache controller"
	depends on REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || MACH_REALVIEW_PB1176
	default y
742
	select OUTER_CACHE
743 744
	help
	  This option enables the L2x0 PrimeCell.
745 746 747 748 749 750 751 752

config CACHE_XSC3L2
	bool "Enable the L2 cache on XScale3"
	depends on CPU_XSC3
	default y
	select OUTER_CACHE
	help
	  This option enables the L2 cache on XScale3.