ARM: sa1100: convert sched_clock() to use new infrastructure
[deliverable/linux.git] / arch / arm / Kconfig
CommitLineData
1da177e4
LT
1config ARM
2 bool
3 default y
e17c6d56 4 select HAVE_AOUT
2064c946 5 select HAVE_IDE
2778f620 6 select HAVE_MEMBLOCK
12b824fb 7 select RTC_LIB
75e7153a 8 select SYS_SUPPORTS_APM_EMULATION
d4c7b1f9 9 select GENERIC_ATOMIC64 if (!CPU_32v6K || !AEABI)
fe166148 10 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
5cbad0eb 11 select HAVE_ARCH_KGDB
3f550096 12 select HAVE_KPROBES if (!XIP_KERNEL)
9edddaa2 13 select HAVE_KRETPROBES if (HAVE_KPROBES)
606576ce 14 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
80be7a7f
RV
15 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
16 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
0e341af8 17 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
1fe53268 18 select HAVE_GENERIC_DMA_COHERENT
e7db7b42
AT
19 select HAVE_KERNEL_GZIP
20 select HAVE_KERNEL_LZO
6e8699f7 21 select HAVE_KERNEL_LZMA
e360adbe 22 select HAVE_IRQ_WORK
7ada189f
JI
23 select HAVE_PERF_EVENTS
24 select PERF_USE_VMALLOC
e513f8bf 25 select HAVE_REGS_AND_STACK_ACCESS_API
19852e59 26 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V7))
1da177e4
LT
27 help
28 The ARM series is a line of low-power-consumption RISC chip designs
f6c8965a 29 licensed by ARM Ltd and targeted at embedded applications and
1da177e4 30 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
f6c8965a 31 manufactured, but legacy ARM-based PC hardware remains popular in
1da177e4
LT
32 Europe. There is an ARM Linux project with a web page at
33 <http://www.arm.linux.org.uk/>.
34
1a189b97
RK
35config HAVE_PWM
36 bool
37
75e7153a
RB
38config SYS_SUPPORTS_APM_EMULATION
39 bool
40
112f38a4
RK
41config HAVE_SCHED_CLOCK
42 bool
43
0a938b97
DB
44config GENERIC_GPIO
45 bool
0a938b97 46
5cfc8ee0
JS
47config ARCH_USES_GETTIMEOFFSET
48 bool
49 default n
746140c7 50
0567a0c0
KH
51config GENERIC_CLOCKEVENTS
52 bool
0567a0c0 53
a8655e83
CM
54config GENERIC_CLOCKEVENTS_BROADCAST
55 bool
56 depends on GENERIC_CLOCKEVENTS
5388a6b2 57 default y if SMP
a8655e83 58
bc581770
LW
59config HAVE_TCM
60 bool
61 select GENERIC_ALLOCATOR
62
e119bfff
RK
63config HAVE_PROC_CPU
64 bool
65
5ea81769
AV
66config NO_IOPORT
67 bool
5ea81769 68
1da177e4
LT
69config EISA
70 bool
71 ---help---
72 The Extended Industry Standard Architecture (EISA) bus was
73 developed as an open alternative to the IBM MicroChannel bus.
74
75 The EISA bus provided some of the features of the IBM MicroChannel
76 bus while maintaining backward compatibility with cards made for
77 the older ISA bus. The EISA bus saw limited use between 1988 and
78 1995 when it was made obsolete by the PCI bus.
79
80 Say Y here if you are building a kernel for an EISA-based machine.
81
82 Otherwise, say N.
83
84config SBUS
85 bool
86
87config MCA
88 bool
89 help
90 MicroChannel Architecture is found in some IBM PS/2 machines and
91 laptops. It is a bus system similar to PCI or ISA. See
92 <file:Documentation/mca.txt> (and especially the web page given
93 there) before attempting to build an MCA bus kernel.
94
4a2581a0
TG
95config GENERIC_HARDIRQS
96 bool
97 default y
98
f16fb1ec
RK
99config STACKTRACE_SUPPORT
100 bool
101 default y
102
f76e9154
NP
103config HAVE_LATENCYTOP_SUPPORT
104 bool
105 depends on !SMP
106 default y
107
f16fb1ec
RK
108config LOCKDEP_SUPPORT
109 bool
110 default y
111
7ad1bcb2
RK
112config TRACE_IRQFLAGS_SUPPORT
113 bool
114 default y
115
4a2581a0
TG
116config HARDIRQS_SW_RESEND
117 bool
118 default y
119
120config GENERIC_IRQ_PROBE
121 bool
122 default y
123
95c354fe
NP
124config GENERIC_LOCKBREAK
125 bool
126 default y
127 depends on SMP && PREEMPT
128
1da177e4
LT
129config RWSEM_GENERIC_SPINLOCK
130 bool
131 default y
132
133config RWSEM_XCHGADD_ALGORITHM
134 bool
135
f0d1b0b3
DH
136config ARCH_HAS_ILOG2_U32
137 bool
f0d1b0b3
DH
138
139config ARCH_HAS_ILOG2_U64
140 bool
f0d1b0b3 141
89c52ed4
BD
142config ARCH_HAS_CPUFREQ
143 bool
144 help
145 Internal node to signify that the ARCH has CPUFREQ support
146 and that the relevant menu configurations are displayed for
147 it.
148
c7b0aff4
KH
149config ARCH_HAS_CPU_IDLE_WAIT
150 def_bool y
151
b89c3b16
AM
152config GENERIC_HWEIGHT
153 bool
154 default y
155
1da177e4
LT
156config GENERIC_CALIBRATE_DELAY
157 bool
158 default y
159
a08b6b79
Z
160config ARCH_MAY_HAVE_PC_FDC
161 bool
162
5ac6da66
CL
163config ZONE_DMA
164 bool
5ac6da66 165
ccd7ab7f
FT
166config NEED_DMA_MAP_STATE
167 def_bool y
168
1da177e4
LT
169config GENERIC_ISA_DMA
170 bool
171
1da177e4
LT
172config FIQ
173 bool
174
034d2f5a
AV
175config ARCH_MTD_XIP
176 bool
177
60a752ef 178config GENERIC_HARDIRQS_NO__DO_IRQ
60a752ef
PZ
179 def_bool y
180
d6d502fa
KK
181config ARM_L1_CACHE_SHIFT_6
182 bool
183 help
184 Setting ARM L1 cache line size to 64 Bytes.
185
c760fc19
HC
186config VECTORS_BASE
187 hex
6afd6fae 188 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
c760fc19
HC
189 default DRAM_BASE if REMAP_VECTORS_TO_RAM
190 default 0x00000000
191 help
192 The base address of exception vectors.
193
1da177e4
LT
194source "init/Kconfig"
195
dc52ddc0
MH
196source "kernel/Kconfig.freezer"
197
1da177e4
LT
198menu "System Type"
199
3c427975
HC
200config MMU
201 bool "MMU-based Paged Memory Management Support"
202 default y
203 help
204 Select if you want MMU-based virtualised addressing space
205 support by paged memory management. If unsure, say 'Y'.
206
ccf50e23
RK
207#
208# The "ARM system type" choice list is ordered alphabetically by option
209# text. Please add new entries in the option alphabetic order.
210#
1da177e4
LT
211choice
212 prompt "ARM system type"
6a0e2430 213 default ARCH_VERSATILE
1da177e4 214
4af6fee1
DS
215config ARCH_AAEC2000
216 bool "Agilent AAEC-2000 based"
c750815e 217 select CPU_ARM920T
4af6fee1 218 select ARM_AMBA
9483a578 219 select HAVE_CLK
5cfc8ee0 220 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
221 help
222 This enables support for systems based on the Agilent AAEC-2000
223
224config ARCH_INTEGRATOR
225 bool "ARM Ltd. Integrator family"
226 select ARM_AMBA
89c52ed4 227 select ARCH_HAS_CPUFREQ
d72fbdf0 228 select COMMON_CLKDEV
c5a0adb5 229 select ICST
13edd86d 230 select GENERIC_CLOCKEVENTS
f4b8b319 231 select PLAT_VERSATILE
4af6fee1
DS
232 help
233 Support for ARM's Integrator platform.
234
235config ARCH_REALVIEW
236 bool "ARM Ltd. RealView family"
237 select ARM_AMBA
cf30fb4a 238 select COMMON_CLKDEV
c5a0adb5 239 select ICST
ae30ceac 240 select GENERIC_CLOCKEVENTS
eb7fffa3 241 select ARCH_WANT_OPTIONAL_GPIOLIB
f4b8b319 242 select PLAT_VERSATILE
e3887714 243 select ARM_TIMER_SP804
b56ba8aa 244 select GPIO_PL061 if GPIOLIB
4af6fee1
DS
245 help
246 This enables support for ARM Ltd RealView boards.
247
248config ARCH_VERSATILE
249 bool "ARM Ltd. Versatile family"
250 select ARM_AMBA
251 select ARM_VIC
71a06da0 252 select COMMON_CLKDEV
c5a0adb5 253 select ICST
89df1272 254 select GENERIC_CLOCKEVENTS
bbeddc43 255 select ARCH_WANT_OPTIONAL_GPIOLIB
f4b8b319 256 select PLAT_VERSATILE
e3887714 257 select ARM_TIMER_SP804
4af6fee1
DS
258 help
259 This enables support for ARM Ltd Versatile board.
260
ceade897
RK
261config ARCH_VEXPRESS
262 bool "ARM Ltd. Versatile Express family"
263 select ARCH_WANT_OPTIONAL_GPIOLIB
264 select ARM_AMBA
265 select ARM_TIMER_SP804
266 select COMMON_CLKDEV
267 select GENERIC_CLOCKEVENTS
ceade897
RK
268 select HAVE_CLK
269 select ICST
270 select PLAT_VERSATILE
271 help
272 This enables support for the ARM Ltd Versatile Express boards.
273
8fc5ffa0
AV
274config ARCH_AT91
275 bool "Atmel AT91"
f373e8c0 276 select ARCH_REQUIRE_GPIOLIB
93686ae8 277 select HAVE_CLK
4af6fee1 278 help
2b3b3516
AV
279 This enables support for systems based on the Atmel AT91RM9200,
280 AT91SAM9 and AT91CAP9 processors.
4af6fee1 281
ccf50e23
RK
282config ARCH_BCMRING
283 bool "Broadcom BCMRING"
284 depends on MMU
285 select CPU_V6
286 select ARM_AMBA
287 select COMMON_CLKDEV
ccf50e23
RK
288 select GENERIC_CLOCKEVENTS
289 select ARCH_WANT_OPTIONAL_GPIOLIB
290 help
291 Support for Broadcom's BCMRing platform.
292
1da177e4 293config ARCH_CLPS711X
4af6fee1 294 bool "Cirrus Logic CLPS711x/EP721x-based"
c750815e 295 select CPU_ARM720T
5cfc8ee0 296 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
297 help
298 Support for Cirrus Logic 711x/721x based boards.
1da177e4 299
d94f944e
AV
300config ARCH_CNS3XXX
301 bool "Cavium Networks CNS3XXX family"
302 select CPU_V6
d94f944e
AV
303 select GENERIC_CLOCKEVENTS
304 select ARM_GIC
5f32f7a0 305 select PCI_DOMAINS if PCI
d94f944e
AV
306 help
307 Support for Cavium Networks CNS3XXX platform.
308
788c9700
RK
309config ARCH_GEMINI
310 bool "Cortina Systems Gemini"
311 select CPU_FA526
788c9700 312 select ARCH_REQUIRE_GPIOLIB
5cfc8ee0 313 select ARCH_USES_GETTIMEOFFSET
788c9700
RK
314 help
315 Support for the Cortina Systems Gemini family SoCs
316
1da177e4
LT
317config ARCH_EBSA110
318 bool "EBSA-110"
c750815e 319 select CPU_SA110
f7e68bbf 320 select ISA
c5eb2a2b 321 select NO_IOPORT
5cfc8ee0 322 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
323 help
324 This is an evaluation board for the StrongARM processor available
f6c8965a 325 from Digital. It has limited hardware on-board, including an
1da177e4
LT
326 Ethernet interface, two PCMCIA sockets, two serial ports and a
327 parallel port.
328
e7736d47
LB
329config ARCH_EP93XX
330 bool "EP93xx-based"
c750815e 331 select CPU_ARM920T
e7736d47
LB
332 select ARM_AMBA
333 select ARM_VIC
ae696fd5 334 select COMMON_CLKDEV
7444a72e 335 select ARCH_REQUIRE_GPIOLIB
eb33575c 336 select ARCH_HAS_HOLES_MEMORYMODEL
5cfc8ee0 337 select ARCH_USES_GETTIMEOFFSET
e7736d47
LB
338 help
339 This enables support for the Cirrus EP93xx series of CPUs.
340
1da177e4
LT
341config ARCH_FOOTBRIDGE
342 bool "FootBridge"
c750815e 343 select CPU_SA110
1da177e4 344 select FOOTBRIDGE
5cfc8ee0 345 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
346 help
347 Support for systems based on the DC21285 companion chip
348 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1da177e4 349
788c9700
RK
350config ARCH_MXC
351 bool "Freescale MXC/iMX-based"
788c9700 352 select GENERIC_CLOCKEVENTS
788c9700 353 select ARCH_REQUIRE_GPIOLIB
03e09cd8 354 select COMMON_CLKDEV
788c9700
RK
355 help
356 Support for Freescale MXC/iMX-based family of processors
357
7bd0f2f5 358config ARCH_STMP3XXX
359 bool "Freescale STMP3xxx"
360 select CPU_ARM926T
7bd0f2f5 361 select COMMON_CLKDEV
362 select ARCH_REQUIRE_GPIOLIB
7bd0f2f5 363 select GENERIC_CLOCKEVENTS
7bd0f2f5 364 select USB_ARCH_HAS_EHCI
365 help
366 Support for systems based on the Freescale 3xxx CPUs.
367
4af6fee1
DS
368config ARCH_NETX
369 bool "Hilscher NetX based"
c750815e 370 select CPU_ARM926T
4af6fee1 371 select ARM_VIC
2fcfe6b8 372 select GENERIC_CLOCKEVENTS
f999b8bd 373 help
4af6fee1
DS
374 This enables support for systems based on the Hilscher NetX Soc
375
376config ARCH_H720X
377 bool "Hynix HMS720x-based"
c750815e 378 select CPU_ARM720T
4af6fee1 379 select ISA_DMA_API
5cfc8ee0 380 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
381 help
382 This enables support for systems based on the Hynix HMS720x
383
3b938be6
RK
384config ARCH_IOP13XX
385 bool "IOP13xx-based"
386 depends on MMU
c750815e 387 select CPU_XSC3
3b938be6
RK
388 select PLAT_IOP
389 select PCI
390 select ARCH_SUPPORTS_MSI
8d5796d2 391 select VMSPLIT_1G
3b938be6
RK
392 help
393 Support for Intel's IOP13XX (XScale) family of processors.
394
3f7e5815
LB
395config ARCH_IOP32X
396 bool "IOP32x-based"
a4f7e763 397 depends on MMU
c750815e 398 select CPU_XSCALE
7ae1f7ec 399 select PLAT_IOP
f7e68bbf 400 select PCI
bb2b180c 401 select ARCH_REQUIRE_GPIOLIB
f999b8bd 402 help
3f7e5815
LB
403 Support for Intel's 80219 and IOP32X (XScale) family of
404 processors.
405
406config ARCH_IOP33X
407 bool "IOP33x-based"
408 depends on MMU
c750815e 409 select CPU_XSCALE
7ae1f7ec 410 select PLAT_IOP
3f7e5815 411 select PCI
bb2b180c 412 select ARCH_REQUIRE_GPIOLIB
3f7e5815
LB
413 help
414 Support for Intel's IOP33X (XScale) family of processors.
1da177e4 415
3b938be6
RK
416config ARCH_IXP23XX
417 bool "IXP23XX-based"
a4f7e763 418 depends on MMU
c750815e 419 select CPU_XSC3
3b938be6 420 select PCI
5cfc8ee0 421 select ARCH_USES_GETTIMEOFFSET
f999b8bd 422 help
3b938be6 423 Support for Intel's IXP23xx (XScale) family of processors.
1da177e4
LT
424
425config ARCH_IXP2000
426 bool "IXP2400/2800-based"
a4f7e763 427 depends on MMU
c750815e 428 select CPU_XSCALE
f7e68bbf 429 select PCI
5cfc8ee0 430 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
431 help
432 Support for Intel's IXP2400/2800 (XScale) family of processors.
1da177e4 433
3b938be6
RK
434config ARCH_IXP4XX
435 bool "IXP4xx-based"
a4f7e763 436 depends on MMU
c750815e 437 select CPU_XSCALE
8858e9af 438 select GENERIC_GPIO
3b938be6 439 select GENERIC_CLOCKEVENTS
5b0d495c 440 select HAVE_SCHED_CLOCK
485bdde7 441 select DMABOUNCE if PCI
c4713074 442 help
3b938be6 443 Support for Intel's IXP4XX (XScale) family of processors.
c4713074 444
edabd38e
SB
445config ARCH_DOVE
446 bool "Marvell Dove"
447 select PCI
edabd38e 448 select ARCH_REQUIRE_GPIOLIB
edabd38e
SB
449 select GENERIC_CLOCKEVENTS
450 select PLAT_ORION
451 help
452 Support for the Marvell Dove SoC 88AP510
453
651c74c7
SB
454config ARCH_KIRKWOOD
455 bool "Marvell Kirkwood"
c750815e 456 select CPU_FEROCEON
651c74c7 457 select PCI
a8865655 458 select ARCH_REQUIRE_GPIOLIB
651c74c7
SB
459 select GENERIC_CLOCKEVENTS
460 select PLAT_ORION
461 help
462 Support for the following Marvell Kirkwood series SoCs:
463 88F6180, 88F6192 and 88F6281.
464
777f9beb
LB
465config ARCH_LOKI
466 bool "Marvell Loki (88RC8480)"
c750815e 467 select CPU_FEROCEON
777f9beb
LB
468 select GENERIC_CLOCKEVENTS
469 select PLAT_ORION
470 help
471 Support for the Marvell Loki (88RC8480) SoC.
472
40805949
KW
473config ARCH_LPC32XX
474 bool "NXP LPC32XX"
475 select CPU_ARM926T
476 select ARCH_REQUIRE_GPIOLIB
477 select HAVE_IDE
478 select ARM_AMBA
479 select USB_ARCH_HAS_OHCI
480 select COMMON_CLKDEV
481 select GENERIC_TIME
482 select GENERIC_CLOCKEVENTS
483 help
484 Support for the NXP LPC32XX family of processors
485
794d15b2
SS
486config ARCH_MV78XX0
487 bool "Marvell MV78xx0"
c750815e 488 select CPU_FEROCEON
794d15b2 489 select PCI
a8865655 490 select ARCH_REQUIRE_GPIOLIB
794d15b2
SS
491 select GENERIC_CLOCKEVENTS
492 select PLAT_ORION
493 help
494 Support for the following Marvell MV78xx0 series SoCs:
495 MV781x0, MV782x0.
496
9dd0b194 497config ARCH_ORION5X
585cf175
TP
498 bool "Marvell Orion"
499 depends on MMU
c750815e 500 select CPU_FEROCEON
038ee083 501 select PCI
a8865655 502 select ARCH_REQUIRE_GPIOLIB
51cbff1d 503 select GENERIC_CLOCKEVENTS
69b02f6a 504 select PLAT_ORION
585cf175 505 help
9dd0b194 506 Support for the following Marvell Orion 5x series SoCs:
d2b2a6bb 507 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
d323ade1 508 Orion-2 (5281), Orion-1-90 (6183).
585cf175 509
788c9700 510config ARCH_MMP
2f7e8fae 511 bool "Marvell PXA168/910/MMP2"
788c9700 512 depends on MMU
788c9700 513 select ARCH_REQUIRE_GPIOLIB
788c9700 514 select COMMON_CLKDEV
788c9700 515 select GENERIC_CLOCKEVENTS
28bb7bc6 516 select HAVE_SCHED_CLOCK
788c9700
RK
517 select TICK_ONESHOT
518 select PLAT_PXA
0bd86961 519 select SPARSE_IRQ
788c9700 520 help
2f7e8fae 521 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
788c9700
RK
522
523config ARCH_KS8695
524 bool "Micrel/Kendin KS8695"
525 select CPU_ARM922T
98830bc9 526 select ARCH_REQUIRE_GPIOLIB
5cfc8ee0 527 select ARCH_USES_GETTIMEOFFSET
788c9700
RK
528 help
529 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
530 System-on-Chip devices.
531
532config ARCH_NS9XXX
533 bool "NetSilicon NS9xxx"
534 select CPU_ARM926T
535 select GENERIC_GPIO
788c9700
RK
536 select GENERIC_CLOCKEVENTS
537 select HAVE_CLK
538 help
539 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
540 System.
541
542 <http://www.digi.com/products/microprocessors/index.jsp>
543
544config ARCH_W90X900
545 bool "Nuvoton W90X900 CPU"
546 select CPU_ARM926T
c52d3d68 547 select ARCH_REQUIRE_GPIOLIB
0e4a34bb 548 select COMMON_CLKDEV
58b5369e 549 select GENERIC_CLOCKEVENTS
788c9700 550 help
a8bc4ead 551 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
552 At present, the w90x900 has been renamed nuc900, regarding
553 the ARM series product line, you can login the following
554 link address to know more.
555
556 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
557 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
788c9700 558
a62e9030 559config ARCH_NUC93X
560 bool "Nuvoton NUC93X CPU"
561 select CPU_ARM926T
a62e9030 562 select COMMON_CLKDEV
563 help
564 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
565 low-power and high performance MPEG-4/JPEG multimedia controller chip.
566
c5f80065
EG
567config ARCH_TEGRA
568 bool "NVIDIA Tegra"
569 select GENERIC_TIME
570 select GENERIC_CLOCKEVENTS
571 select GENERIC_GPIO
572 select HAVE_CLK
d8611961 573 select COMMON_CLKDEV
c5f80065 574 select ARCH_HAS_BARRIERS if CACHE_L2X0
7056d423 575 select ARCH_HAS_CPUFREQ
c5f80065
EG
576 help
577 This enables support for NVIDIA Tegra based systems (Tegra APX,
578 Tegra 6xx and Tegra 2 series).
579
4af6fee1
DS
580config ARCH_PNX4008
581 bool "Philips Nexperia PNX4008 Mobile"
c750815e 582 select CPU_ARM926T
6985a5ad 583 select COMMON_CLKDEV
5cfc8ee0 584 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
585 help
586 This enables support for Philips PNX4008 mobile platform.
587
1da177e4 588config ARCH_PXA
2c8086a5 589 bool "PXA2xx/PXA3xx-based"
a4f7e763 590 depends on MMU
034d2f5a 591 select ARCH_MTD_XIP
89c52ed4 592 select ARCH_HAS_CPUFREQ
8c3abc7d 593 select COMMON_CLKDEV
7444a72e 594 select ARCH_REQUIRE_GPIOLIB
981d0f39 595 select GENERIC_CLOCKEVENTS
7ce83018 596 select HAVE_SCHED_CLOCK
a88264c2 597 select TICK_ONESHOT
bd5ce433 598 select PLAT_PXA
6ac6b817 599 select SPARSE_IRQ
f999b8bd 600 help
2c8086a5 601 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
1da177e4 602
788c9700
RK
603config ARCH_MSM
604 bool "Qualcomm MSM"
4b536b8d 605 select HAVE_CLK
49cbe786 606 select GENERIC_CLOCKEVENTS
923a081c 607 select ARCH_REQUIRE_GPIOLIB
49cbe786 608 help
4b53eb4f
DW
609 Support for Qualcomm MSM/QSD based systems. This runs on the
610 apps processor of the MSM/QSD and depends on a shared memory
611 interface to the modem processor which runs the baseband
612 stack and controls some vital subsystems
613 (clock and power control, etc).
49cbe786 614
c793c1b0
MD
615config ARCH_SHMOBILE
616 bool "Renesas SH-Mobile"
617 help
618 Support for Renesas's SH-Mobile ARM platforms
619
1da177e4
LT
620config ARCH_RPC
621 bool "RiscPC"
622 select ARCH_ACORN
623 select FIQ
624 select TIMER_ACORN
a08b6b79 625 select ARCH_MAY_HAVE_PC_FDC
341eb781 626 select HAVE_PATA_PLATFORM
065909b9 627 select ISA_DMA_API
5ea81769 628 select NO_IOPORT
07f841b7 629 select ARCH_SPARSEMEM_ENABLE
5cfc8ee0 630 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
631 help
632 On the Acorn Risc-PC, Linux can support the internal IDE disk and
633 CD-ROM interface, serial and parallel port, and the floppy drive.
634
635config ARCH_SA1100
636 bool "SA1100-based"
c750815e 637 select CPU_SA1100
f7e68bbf 638 select ISA
05944d74 639 select ARCH_SPARSEMEM_ENABLE
034d2f5a 640 select ARCH_MTD_XIP
89c52ed4 641 select ARCH_HAS_CPUFREQ
1937f5b9 642 select CPU_FREQ
3e238be2 643 select GENERIC_CLOCKEVENTS
9483a578 644 select HAVE_CLK
5094b92f 645 select HAVE_SCHED_CLOCK
3e238be2 646 select TICK_ONESHOT
7444a72e 647 select ARCH_REQUIRE_GPIOLIB
f999b8bd
MM
648 help
649 Support for StrongARM 11x0 based boards.
1da177e4
LT
650
651config ARCH_S3C2410
63b1f51b 652 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
0a938b97 653 select GENERIC_GPIO
9d56c02a 654 select ARCH_HAS_CPUFREQ
9483a578 655 select HAVE_CLK
5cfc8ee0 656 select ARCH_USES_GETTIMEOFFSET
20676c15 657 select HAVE_S3C2410_I2C if I2C
1da177e4
LT
658 help
659 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
660 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
f6c8965a 661 the Samsung SMDK2410 development board (and derivatives).
1da177e4 662
63b1f51b
BD
663 Note, the S3C2416 and the S3C2450 are so close that they even share
664 the same SoC ID code. This means that there is no seperate machine
665 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
666
a08ab637
BD
667config ARCH_S3C64XX
668 bool "Samsung S3C64XX"
89f1fa08 669 select PLAT_SAMSUNG
89f0ce72 670 select CPU_V6
89f0ce72 671 select ARM_VIC
a08ab637 672 select HAVE_CLK
89f0ce72 673 select NO_IOPORT
5cfc8ee0 674 select ARCH_USES_GETTIMEOFFSET
89c52ed4 675 select ARCH_HAS_CPUFREQ
89f0ce72
BD
676 select ARCH_REQUIRE_GPIOLIB
677 select SAMSUNG_CLKSRC
678 select SAMSUNG_IRQ_VIC_TIMER
679 select SAMSUNG_IRQ_UART
680 select S3C_GPIO_TRACK
681 select S3C_GPIO_PULL_UPDOWN
682 select S3C_GPIO_CFG_S3C24XX
683 select S3C_GPIO_CFG_S3C64XX
684 select S3C_DEV_NAND
685 select USB_ARCH_HAS_OHCI
686 select SAMSUNG_GPIOLIB_4BIT
20676c15 687 select HAVE_S3C2410_I2C if I2C
c39d8d55 688 select HAVE_S3C2410_WATCHDOG if WATCHDOG
a08ab637
BD
689 help
690 Samsung S3C64XX series based systems
691
49b7a491
KK
692config ARCH_S5P64X0
693 bool "Samsung S5P6440 S5P6450"
c4ffccdd
KK
694 select CPU_V6
695 select GENERIC_GPIO
696 select HAVE_CLK
c39d8d55 697 select HAVE_S3C2410_WATCHDOG if WATCHDOG
925c68cd 698 select ARCH_USES_GETTIMEOFFSET
20676c15 699 select HAVE_S3C2410_I2C if I2C
754961a8 700 select HAVE_S3C_RTC if RTC_CLASS
c4ffccdd 701 help
49b7a491
KK
702 Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
703 SMDK6450.
c4ffccdd 704
550db7f1
KK
705config ARCH_S5P6442
706 bool "Samsung S5P6442"
707 select CPU_V6
708 select GENERIC_GPIO
709 select HAVE_CLK
925c68cd 710 select ARCH_USES_GETTIMEOFFSET
c39d8d55 711 select HAVE_S3C2410_WATCHDOG if WATCHDOG
550db7f1
KK
712 help
713 Samsung S5P6442 CPU based systems
714
acc84707
MS
715config ARCH_S5PC100
716 bool "Samsung S5PC100"
5a7652f2
BM
717 select GENERIC_GPIO
718 select HAVE_CLK
719 select CPU_V7
d6d502fa 720 select ARM_L1_CACHE_SHIFT_6
925c68cd 721 select ARCH_USES_GETTIMEOFFSET
20676c15 722 select HAVE_S3C2410_I2C if I2C
754961a8 723 select HAVE_S3C_RTC if RTC_CLASS
c39d8d55 724 select HAVE_S3C2410_WATCHDOG if WATCHDOG
5a7652f2 725 help
acc84707 726 Samsung S5PC100 series based systems
5a7652f2 727
170f4e42
KK
728config ARCH_S5PV210
729 bool "Samsung S5PV210/S5PC110"
730 select CPU_V7
eecb6a84 731 select ARCH_SPARSEMEM_ENABLE
170f4e42
KK
732 select GENERIC_GPIO
733 select HAVE_CLK
734 select ARM_L1_CACHE_SHIFT_6
d8144aea 735 select ARCH_HAS_CPUFREQ
925c68cd 736 select ARCH_USES_GETTIMEOFFSET
20676c15 737 select HAVE_S3C2410_I2C if I2C
754961a8 738 select HAVE_S3C_RTC if RTC_CLASS
c39d8d55 739 select HAVE_S3C2410_WATCHDOG if WATCHDOG
170f4e42
KK
740 help
741 Samsung S5PV210/S5PC110 series based systems
742
cc0e72b8
CY
743config ARCH_S5PV310
744 bool "Samsung S5PV310/S5PC210"
745 select CPU_V7
f567fa6f 746 select ARCH_SPARSEMEM_ENABLE
cc0e72b8
CY
747 select GENERIC_GPIO
748 select HAVE_CLK
749 select GENERIC_CLOCKEVENTS
754961a8 750 select HAVE_S3C_RTC if RTC_CLASS
20676c15 751 select HAVE_S3C2410_I2C if I2C
c39d8d55 752 select HAVE_S3C2410_WATCHDOG if WATCHDOG
cc0e72b8
CY
753 help
754 Samsung S5PV310 series based systems
755
1da177e4
LT
756config ARCH_SHARK
757 bool "Shark"
c750815e 758 select CPU_SA110
f7e68bbf
RK
759 select ISA
760 select ISA_DMA
3bca103a 761 select ZONE_DMA
f7e68bbf 762 select PCI
5cfc8ee0 763 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
764 help
765 Support for the StrongARM based Digital DNARD machine, also known
766 as "Shark" (<http://www.shark-linux.de/shark.html>).
1da177e4 767
83ef3338
HK
768config ARCH_TCC_926
769 bool "Telechips TCC ARM926-based systems"
770 select CPU_ARM926T
771 select HAVE_CLK
772 select COMMON_CLKDEV
773 select GENERIC_CLOCKEVENTS
774 help
775 Support for Telechips TCC ARM926-based systems.
776
1da177e4
LT
777config ARCH_LH7A40X
778 bool "Sharp LH7A40X"
c750815e 779 select CPU_ARM922T
4ba3f7c5 780 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
5cfc8ee0 781 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
782 help
783 Say Y here for systems based on one of the Sharp LH7A40X
784 System on a Chip processors. These CPUs include an ARM922T
785 core with a wide array of integrated devices for
786 hand-held and low-power applications.
787
d98aac75
LW
788config ARCH_U300
789 bool "ST-Ericsson U300 Series"
790 depends on MMU
791 select CPU_ARM926T
bc581770 792 select HAVE_TCM
d98aac75
LW
793 select ARM_AMBA
794 select ARM_VIC
d98aac75 795 select GENERIC_CLOCKEVENTS
d98aac75
LW
796 select COMMON_CLKDEV
797 select GENERIC_GPIO
798 help
799 Support for ST-Ericsson U300 series mobile platforms.
800
ccf50e23
RK
801config ARCH_U8500
802 bool "ST-Ericsson U8500 Series"
803 select CPU_V7
804 select ARM_AMBA
ccf50e23
RK
805 select GENERIC_CLOCKEVENTS
806 select COMMON_CLKDEV
94bdc0e2 807 select ARCH_REQUIRE_GPIOLIB
ccf50e23
RK
808 help
809 Support for ST-Ericsson's Ux500 architecture
810
811config ARCH_NOMADIK
812 bool "STMicroelectronics Nomadik"
813 select ARM_AMBA
814 select ARM_VIC
815 select CPU_ARM926T
ccf50e23 816 select COMMON_CLKDEV
ccf50e23 817 select GENERIC_CLOCKEVENTS
ccf50e23
RK
818 select ARCH_REQUIRE_GPIOLIB
819 help
820 Support for the Nomadik platform by ST-Ericsson
821
7c6337e2
KH
822config ARCH_DAVINCI
823 bool "TI DaVinci"
7c6337e2 824 select GENERIC_CLOCKEVENTS
dce1115b 825 select ARCH_REQUIRE_GPIOLIB
3bca103a 826 select ZONE_DMA
9232fcc9 827 select HAVE_IDE
c5b736d0 828 select COMMON_CLKDEV
20e9969b 829 select GENERIC_ALLOCATOR
ae88e05a 830 select ARCH_HAS_HOLES_MEMORYMODEL
7c6337e2
KH
831 help
832 Support for TI's DaVinci platform.
833
3b938be6
RK
834config ARCH_OMAP
835 bool "TI OMAP"
9483a578 836 select HAVE_CLK
7444a72e 837 select ARCH_REQUIRE_GPIOLIB
89c52ed4 838 select ARCH_HAS_CPUFREQ
06cad098 839 select GENERIC_CLOCKEVENTS
9af915da 840 select ARCH_HAS_HOLES_MEMORYMODEL
3b938be6 841 help
6e457bb0 842 Support for TI's OMAP platform (OMAP1/2/3/4).
3b938be6 843
cee37e50 844config PLAT_SPEAR
845 bool "ST SPEAr"
846 select ARM_AMBA
847 select ARCH_REQUIRE_GPIOLIB
848 select COMMON_CLKDEV
849 select GENERIC_CLOCKEVENTS
cee37e50 850 select HAVE_CLK
851 help
852 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
853
1da177e4
LT
854endchoice
855
ccf50e23
RK
856#
857# This is sorted alphabetically by mach-* pathname. However, plat-*
858# Kconfigs may be included either alphabetically (according to the
859# plat- suffix) or along side the corresponding mach-* source.
860#
95b8f20f
RK
861source "arch/arm/mach-aaec2000/Kconfig"
862
863source "arch/arm/mach-at91/Kconfig"
864
865source "arch/arm/mach-bcmring/Kconfig"
866
1da177e4
LT
867source "arch/arm/mach-clps711x/Kconfig"
868
d94f944e
AV
869source "arch/arm/mach-cns3xxx/Kconfig"
870
95b8f20f
RK
871source "arch/arm/mach-davinci/Kconfig"
872
873source "arch/arm/mach-dove/Kconfig"
874
e7736d47
LB
875source "arch/arm/mach-ep93xx/Kconfig"
876
1da177e4
LT
877source "arch/arm/mach-footbridge/Kconfig"
878
59d3a193
PZ
879source "arch/arm/mach-gemini/Kconfig"
880
95b8f20f
RK
881source "arch/arm/mach-h720x/Kconfig"
882
1da177e4
LT
883source "arch/arm/mach-integrator/Kconfig"
884
3f7e5815
LB
885source "arch/arm/mach-iop32x/Kconfig"
886
887source "arch/arm/mach-iop33x/Kconfig"
1da177e4 888
285f5fa7
DW
889source "arch/arm/mach-iop13xx/Kconfig"
890
1da177e4
LT
891source "arch/arm/mach-ixp4xx/Kconfig"
892
893source "arch/arm/mach-ixp2000/Kconfig"
894
c4713074
LB
895source "arch/arm/mach-ixp23xx/Kconfig"
896
95b8f20f
RK
897source "arch/arm/mach-kirkwood/Kconfig"
898
899source "arch/arm/mach-ks8695/Kconfig"
900
901source "arch/arm/mach-lh7a40x/Kconfig"
902
777f9beb
LB
903source "arch/arm/mach-loki/Kconfig"
904
40805949
KW
905source "arch/arm/mach-lpc32xx/Kconfig"
906
95b8f20f
RK
907source "arch/arm/mach-msm/Kconfig"
908
794d15b2
SS
909source "arch/arm/mach-mv78xx0/Kconfig"
910
95b8f20f 911source "arch/arm/plat-mxc/Kconfig"
1da177e4 912
95b8f20f 913source "arch/arm/mach-netx/Kconfig"
49cbe786 914
95b8f20f
RK
915source "arch/arm/mach-nomadik/Kconfig"
916source "arch/arm/plat-nomadik/Kconfig"
917
918source "arch/arm/mach-ns9xxx/Kconfig"
1da177e4 919
186f93ea 920source "arch/arm/mach-nuc93x/Kconfig"
1da177e4 921
d48af15e
TL
922source "arch/arm/plat-omap/Kconfig"
923
924source "arch/arm/mach-omap1/Kconfig"
1da177e4 925
1dbae815
TL
926source "arch/arm/mach-omap2/Kconfig"
927
9dd0b194 928source "arch/arm/mach-orion5x/Kconfig"
585cf175 929
95b8f20f
RK
930source "arch/arm/mach-pxa/Kconfig"
931source "arch/arm/plat-pxa/Kconfig"
585cf175 932
95b8f20f
RK
933source "arch/arm/mach-mmp/Kconfig"
934
935source "arch/arm/mach-realview/Kconfig"
936
937source "arch/arm/mach-sa1100/Kconfig"
edabd38e 938
cf383678 939source "arch/arm/plat-samsung/Kconfig"
a21765a7 940source "arch/arm/plat-s3c24xx/Kconfig"
c4ffccdd 941source "arch/arm/plat-s5p/Kconfig"
a21765a7 942
cee37e50 943source "arch/arm/plat-spear/Kconfig"
a21765a7 944
83ef3338
HK
945source "arch/arm/plat-tcc/Kconfig"
946
a21765a7
BD
947if ARCH_S3C2410
948source "arch/arm/mach-s3c2400/Kconfig"
1da177e4 949source "arch/arm/mach-s3c2410/Kconfig"
a21765a7 950source "arch/arm/mach-s3c2412/Kconfig"
f1290a49 951source "arch/arm/mach-s3c2416/Kconfig"
a21765a7 952source "arch/arm/mach-s3c2440/Kconfig"
e4d06e39 953source "arch/arm/mach-s3c2443/Kconfig"
a21765a7 954endif
1da177e4 955
a08ab637 956if ARCH_S3C64XX
431107ea 957source "arch/arm/mach-s3c64xx/Kconfig"
a08ab637
BD
958endif
959
49b7a491 960source "arch/arm/mach-s5p64x0/Kconfig"
c4ffccdd 961
550db7f1 962source "arch/arm/mach-s5p6442/Kconfig"
7bd0f2f5 963
5a7652f2 964source "arch/arm/mach-s5pc100/Kconfig"
5a7652f2 965
170f4e42
KK
966source "arch/arm/mach-s5pv210/Kconfig"
967
cc0e72b8
CY
968source "arch/arm/mach-s5pv310/Kconfig"
969
882d01f9 970source "arch/arm/mach-shmobile/Kconfig"
52c543f9 971
882d01f9 972source "arch/arm/plat-stmp3xxx/Kconfig"
9e73c84c 973
c5f80065
EG
974source "arch/arm/mach-tegra/Kconfig"
975
95b8f20f 976source "arch/arm/mach-u300/Kconfig"
1da177e4 977
95b8f20f 978source "arch/arm/mach-ux500/Kconfig"
1da177e4
LT
979
980source "arch/arm/mach-versatile/Kconfig"
981
ceade897
RK
982source "arch/arm/mach-vexpress/Kconfig"
983
7ec80ddf 984source "arch/arm/mach-w90x900/Kconfig"
985
1da177e4
LT
986# Definitions to make life easier
987config ARCH_ACORN
988 bool
989
7ae1f7ec
LB
990config PLAT_IOP
991 bool
469d3044 992 select GENERIC_CLOCKEVENTS
7ae1f7ec 993
69b02f6a
LB
994config PLAT_ORION
995 bool
996
bd5ce433
EM
997config PLAT_PXA
998 bool
999
f4b8b319
RK
1000config PLAT_VERSATILE
1001 bool
1002
e3887714
RK
1003config ARM_TIMER_SP804
1004 bool
1005
1da177e4
LT
1006source arch/arm/mm/Kconfig
1007
afe4b25e
LB
1008config IWMMXT
1009 bool "Enable iWMMXt support"
40305a58
EM
1010 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
1011 default y if PXA27x || PXA3xx || ARCH_MMP
afe4b25e
LB
1012 help
1013 Enable support for iWMMXt context switching at run time if
1014 running on a CPU that supports it.
1015
1da177e4
LT
1016# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
1017config XSCALE_PMU
1018 bool
1019 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
1020 default y
1021
0f4f0672 1022config CPU_HAS_PMU
8954bb0d
WD
1023 depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
1024 (!ARCH_OMAP3 || OMAP3_EMU)
0f4f0672
JI
1025 default y
1026 bool
1027
3b93e7b0
HC
1028if !MMU
1029source "arch/arm/Kconfig-nommu"
1030endif
1031
9cba3ccc
CM
1032config ARM_ERRATA_411920
1033 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
81d11955 1034 depends on CPU_V6
9cba3ccc
CM
1035 help
1036 Invalidation of the Instruction Cache operation can
1037 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1038 It does not affect the MPCore. This option enables the ARM Ltd.
1039 recommended workaround.
1040
7ce236fc
CM
1041config ARM_ERRATA_430973
1042 bool "ARM errata: Stale prediction on replaced interworking branch"
1043 depends on CPU_V7
1044 help
1045 This option enables the workaround for the 430973 Cortex-A8
1046 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1047 interworking branch is replaced with another code sequence at the
1048 same virtual address, whether due to self-modifying code or virtual
1049 to physical address re-mapping, Cortex-A8 does not recover from the
1050 stale interworking branch prediction. This results in Cortex-A8
1051 executing the new code sequence in the incorrect ARM or Thumb state.
1052 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1053 and also flushes the branch target cache at every context switch.
1054 Note that setting specific bits in the ACTLR register may not be
1055 available in non-secure mode.
1056
855c551f
CM
1057config ARM_ERRATA_458693
1058 bool "ARM errata: Processor deadlock when a false hazard is created"
1059 depends on CPU_V7
1060 help
1061 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1062 erratum. For very specific sequences of memory operations, it is
1063 possible for a hazard condition intended for a cache line to instead
1064 be incorrectly associated with a different cache line. This false
1065 hazard might then cause a processor deadlock. The workaround enables
1066 the L1 caching of the NEON accesses and disables the PLD instruction
1067 in the ACTLR register. Note that setting specific bits in the ACTLR
1068 register may not be available in non-secure mode.
1069
0516e464
CM
1070config ARM_ERRATA_460075
1071 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1072 depends on CPU_V7
1073 help
1074 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1075 erratum. Any asynchronous access to the L2 cache may encounter a
1076 situation in which recent store transactions to the L2 cache are lost
1077 and overwritten with stale memory contents from external memory. The
1078 workaround disables the write-allocate mode for the L2 cache via the
1079 ACTLR register. Note that setting specific bits in the ACTLR register
1080 may not be available in non-secure mode.
1081
9f05027c
WD
1082config ARM_ERRATA_742230
1083 bool "ARM errata: DMB operation may be faulty"
1084 depends on CPU_V7 && SMP
1085 help
1086 This option enables the workaround for the 742230 Cortex-A9
1087 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1088 between two write operations may not ensure the correct visibility
1089 ordering of the two writes. This workaround sets a specific bit in
1090 the diagnostic register of the Cortex-A9 which causes the DMB
1091 instruction to behave as a DSB, ensuring the correct behaviour of
1092 the two writes.
1093
a672e99b
WD
1094config ARM_ERRATA_742231
1095 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1096 depends on CPU_V7 && SMP
1097 help
1098 This option enables the workaround for the 742231 Cortex-A9
1099 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1100 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1101 accessing some data located in the same cache line, may get corrupted
1102 data due to bad handling of the address hazard when the line gets
1103 replaced from one of the CPUs at the same time as another CPU is
1104 accessing it. This workaround sets specific bits in the diagnostic
1105 register of the Cortex-A9 which reduces the linefill issuing
1106 capabilities of the processor.
1107
9e65582a
SS
1108config PL310_ERRATA_588369
1109 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1110 depends on CACHE_L2X0 && ARCH_OMAP4
1111 help
1112 The PL310 L2 cache controller implements three types of Clean &
1113 Invalidate maintenance operations: by Physical Address
1114 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1115 They are architecturally defined to behave as the execution of a
1116 clean operation followed immediately by an invalidate operation,
1117 both performing to the same memory location. This functionality
1118 is not correctly implemented in PL310 as clean lines are not
1119 invalidated as a result of these operations. Note that this errata
1120 uses Texas Instrument's secure monitor api.
cdf357f1
WD
1121
1122config ARM_ERRATA_720789
1123 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1124 depends on CPU_V7 && SMP
1125 help
1126 This option enables the workaround for the 720789 Cortex-A9 (prior to
1127 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1128 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1129 As a consequence of this erratum, some TLB entries which should be
1130 invalidated are not, resulting in an incoherency in the system page
1131 tables. The workaround changes the TLB flushing routines to invalidate
1132 entries regardless of the ASID.
475d92fc
WD
1133
1134config ARM_ERRATA_743622
1135 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1136 depends on CPU_V7
1137 help
1138 This option enables the workaround for the 743622 Cortex-A9
1139 (r2p0..r2p2) erratum. Under very rare conditions, a faulty
1140 optimisation in the Cortex-A9 Store Buffer may lead to data
1141 corruption. This workaround sets a specific bit in the diagnostic
1142 register of the Cortex-A9 which disables the Store Buffer
1143 optimisation, preventing the defect from occurring. This has no
1144 visible impact on the overall performance or power consumption of the
1145 processor.
1146
1da177e4
LT
1147endmenu
1148
1149source "arch/arm/common/Kconfig"
1150
1da177e4
LT
1151menu "Bus support"
1152
1153config ARM_AMBA
1154 bool
1155
1156config ISA
1157 bool
1da177e4
LT
1158 help
1159 Find out whether you have ISA slots on your motherboard. ISA is the
1160 name of a bus system, i.e. the way the CPU talks to the other stuff
1161 inside your box. Other bus systems are PCI, EISA, MicroChannel
1162 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1163 newer boards don't support it. If you have ISA, say Y, otherwise N.
1164
065909b9 1165# Select ISA DMA controller support
1da177e4
LT
1166config ISA_DMA
1167 bool
065909b9 1168 select ISA_DMA_API
1da177e4 1169
065909b9 1170# Select ISA DMA interface
5cae841b
AV
1171config ISA_DMA_API
1172 bool
5cae841b 1173
1da177e4 1174config PCI
5f32f7a0 1175 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX
1da177e4
LT
1176 help
1177 Find out whether you have a PCI motherboard. PCI is the name of a
1178 bus system, i.e. the way the CPU talks to the other stuff inside
1179 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1180 VESA. If you have PCI, say Y, otherwise N.
1181
52882173
AV
1182config PCI_DOMAINS
1183 bool
1184 depends on PCI
1185
36e23590
MW
1186config PCI_SYSCALL
1187 def_bool PCI
1188
1da177e4
LT
1189# Select the host bridge type
1190config PCI_HOST_VIA82C505
1191 bool
1192 depends on PCI && ARCH_SHARK
1193 default y
1194
a0113a99
MR
1195config PCI_HOST_ITE8152
1196 bool
1197 depends on PCI && MACH_ARMCORE
1198 default y
1199 select DMABOUNCE
1200
1da177e4
LT
1201source "drivers/pci/Kconfig"
1202
1203source "drivers/pcmcia/Kconfig"
1204
1205endmenu
1206
1207menu "Kernel Features"
1208
0567a0c0
KH
1209source "kernel/time/Kconfig"
1210
1da177e4
LT
1211config SMP
1212 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
971acb9b 1213 depends on EXPERIMENTAL
bc28248e 1214 depends on GENERIC_CLOCKEVENTS
971acb9b 1215 depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
89c3dedf
DW
1216 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
1217 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
1218 ARCH_MSM_SCORPIONMP
f6dd9fa5 1219 select USE_GENERIC_SMP_HELPERS
89c3dedf 1220 select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
1da177e4
LT
1221 help
1222 This enables support for systems with more than one CPU. If you have
1223 a system with only one CPU, like most personal computers, say N. If
1224 you have a system with more than one CPU, say Y.
1225
1226 If you say N here, the kernel will run on single and multiprocessor
1227 machines, but will use only one CPU of a multiprocessor machine. If
1228 you say Y here, the kernel will run on many, but not all, single
1229 processor machines. On a single processor machine, the kernel will
1230 run faster if you say N here.
1231
03502faa 1232 See also <file:Documentation/i386/IO-APIC.txt>,
1da177e4 1233 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
50a23e6e 1234 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
1da177e4
LT
1235
1236 If you don't know what to do here, say N.
1237
f00ec48f
RK
1238config SMP_ON_UP
1239 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
1240 depends on EXPERIMENTAL
1241 depends on SMP && !XIP && !THUMB2_KERNEL
1242 default y
1243 help
1244 SMP kernels contain instructions which fail on non-SMP processors.
1245 Enabling this option allows the kernel to modify itself to make
1246 these instructions safe. Disabling it allows about 1K of space
1247 savings.
1248
1249 If you don't know what to do here, say Y.
1250
a8cbcd92
RK
1251config HAVE_ARM_SCU
1252 bool
1253 depends on SMP
1254 help
1255 This option enables support for the ARM system coherency unit
1256
f32f4ce2
RK
1257config HAVE_ARM_TWD
1258 bool
1259 depends on SMP
1260 help
1261 This options enables support for the ARM timer and watchdog unit
1262
8d5796d2
LB
1263choice
1264 prompt "Memory split"
1265 default VMSPLIT_3G
1266 help
1267 Select the desired split between kernel and user memory.
1268
1269 If you are not absolutely sure what you are doing, leave this
1270 option alone!
1271
1272 config VMSPLIT_3G
1273 bool "3G/1G user/kernel split"
1274 config VMSPLIT_2G
1275 bool "2G/2G user/kernel split"
1276 config VMSPLIT_1G
1277 bool "1G/3G user/kernel split"
1278endchoice
1279
1280config PAGE_OFFSET
1281 hex
1282 default 0x40000000 if VMSPLIT_1G
1283 default 0x80000000 if VMSPLIT_2G
1284 default 0xC0000000
1285
1da177e4
LT
1286config NR_CPUS
1287 int "Maximum number of CPUs (2-32)"
1288 range 2 32
1289 depends on SMP
1290 default "4"
1291
a054a811
RK
1292config HOTPLUG_CPU
1293 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1294 depends on SMP && HOTPLUG && EXPERIMENTAL
176bfc44 1295 depends on !ARCH_MSM
a054a811
RK
1296 help
1297 Say Y here to experiment with turning CPUs off and on. CPUs
1298 can be controlled through /sys/devices/system/cpu.
1299
37ee16ae
RK
1300config LOCAL_TIMERS
1301 bool "Use local timer interrupts"
971acb9b 1302 depends on SMP
37ee16ae 1303 default y
89c3dedf 1304 select HAVE_ARM_TWD if !ARCH_MSM_SCORPIONMP
37ee16ae
RK
1305 help
1306 Enable support for local timers on SMP platforms, rather then the
1307 legacy IPI broadcast method. Local timers allows the system
1308 accounting to be spread across the timer interval, preventing a
1309 "thundering herd" at every timer tick.
1310
d45a398f 1311source kernel/Kconfig.preempt
1da177e4 1312
f8065813
RK
1313config HZ
1314 int
49b7a491 1315 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
2192482e 1316 ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
bfe65704 1317 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
5248c657 1318 default AT91_TIMER_HZ if ARCH_AT91
5da3e714 1319 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
f8065813
RK
1320 default 100
1321
16c79651
CM
1322config THUMB2_KERNEL
1323 bool "Compile the kernel in Thumb-2 mode"
1324 depends on CPU_V7 && EXPERIMENTAL
1325 select AEABI
1326 select ARM_ASM_UNIFIED
1327 help
1328 By enabling this option, the kernel will be compiled in
1329 Thumb-2 mode. A compiler/assembler that understand the unified
1330 ARM-Thumb syntax is needed.
1331
1332 If unsure, say N.
1333
0becb088
CM
1334config ARM_ASM_UNIFIED
1335 bool
1336
704bdda0
NP
1337config AEABI
1338 bool "Use the ARM EABI to compile the kernel"
1339 help
1340 This option allows for the kernel to be compiled using the latest
1341 ARM ABI (aka EABI). This is only useful if you are using a user
1342 space environment that is also compiled with EABI.
1343
1344 Since there are major incompatibilities between the legacy ABI and
1345 EABI, especially with regard to structure member alignment, this
1346 option also changes the kernel syscall calling convention to
1347 disambiguate both ABIs and allow for backward compatibility support
1348 (selected with CONFIG_OABI_COMPAT).
1349
1350 To use this you need GCC version 4.0.0 or later.
1351
6c90c872 1352config OABI_COMPAT
a73a3ff1 1353 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
61c484d4 1354 depends on AEABI && EXPERIMENTAL
6c90c872
NP
1355 default y
1356 help
1357 This option preserves the old syscall interface along with the
1358 new (ARM EABI) one. It also provides a compatibility layer to
1359 intercept syscalls that have structure arguments which layout
1360 in memory differs between the legacy ABI and the new ARM EABI
1361 (only for non "thumb" binaries). This option adds a tiny
1362 overhead to all syscalls and produces a slightly larger kernel.
1363 If you know you'll be using only pure EABI user space then you
1364 can say N here. If this option is not selected and you attempt
1365 to execute a legacy ABI binary then the result will be
1366 UNPREDICTABLE (in fact it can be predicted that it won't work
1367 at all). If in doubt say Y.
1368
eb33575c 1369config ARCH_HAS_HOLES_MEMORYMODEL
e80d6a24 1370 bool
e80d6a24 1371
05944d74
RK
1372config ARCH_SPARSEMEM_ENABLE
1373 bool
1374
07a2f737
RK
1375config ARCH_SPARSEMEM_DEFAULT
1376 def_bool ARCH_SPARSEMEM_ENABLE
1377
05944d74 1378config ARCH_SELECT_MEMORY_MODEL
be370302 1379 def_bool ARCH_SPARSEMEM_ENABLE
c80d79d7 1380
053a96ca
NP
1381config HIGHMEM
1382 bool "High Memory Support (EXPERIMENTAL)"
1383 depends on MMU && EXPERIMENTAL
1384 help
1385 The address space of ARM processors is only 4 Gigabytes large
1386 and it has to accommodate user address space, kernel address
1387 space as well as some memory mapped IO. That means that, if you
1388 have a large amount of physical memory and/or IO, not all of the
1389 memory can be "permanently mapped" by the kernel. The physical
1390 memory that is not permanently mapped is called "high memory".
1391
1392 Depending on the selected kernel/user memory split, minimum
1393 vmalloc space and actual amount of RAM, you may not need this
1394 option which should result in a slightly faster kernel.
1395
1396 If unsure, say n.
1397
65cec8e3
RK
1398config HIGHPTE
1399 bool "Allocate 2nd-level pagetables from highmem"
1400 depends on HIGHMEM
1401 depends on !OUTER_CACHE
1402
1b8873a0
JI
1403config HW_PERF_EVENTS
1404 bool "Enable hardware performance counter support for perf events"
fe166148 1405 depends on PERF_EVENTS && CPU_HAS_PMU
1b8873a0
JI
1406 default y
1407 help
1408 Enable hardware performance counter support for perf events. If
1409 disabled, perf events will use software events only.
1410
354e6f72 1411config SPARSE_IRQ
c1ba6ba3 1412 def_bool n
354e6f72 1413 help
1414 This enables support for sparse irqs. This is useful in general
1415 as most CPUs have a fairly sparse array of IRQ vectors, which
1416 the irq_desc then maps directly on to. Systems with a high
1417 number of off-chip IRQs will want to treat this as
1418 experimental until they have been independently verified.
1419
3f22ab27
DH
1420source "mm/Kconfig"
1421
c1b2d970
MD
1422config FORCE_MAX_ZONEORDER
1423 int "Maximum zone order" if ARCH_SHMOBILE
1424 range 11 64 if ARCH_SHMOBILE
1425 default "9" if SA1111
1426 default "11"
1427 help
1428 The kernel memory allocator divides physically contiguous memory
1429 blocks into "zones", where each zone is a power of two number of
1430 pages. This option selects the largest power of two that the kernel
1431 keeps in the memory allocator. If you need to allocate very large
1432 blocks of physically contiguous memory, then you may need to
1433 increase this value.
1434
1435 This config option is actually maximum order plus one. For example,
1436 a value of 11 means that the largest free memory block is 2^10 pages.
1437
1da177e4
LT
1438config LEDS
1439 bool "Timer and CPU usage LEDs"
e055d5bf 1440 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
8c8fdbc9 1441 ARCH_EBSA285 || ARCH_INTEGRATOR || \
1da177e4
LT
1442 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1443 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
73a59c1c 1444 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
25329671 1445 ARCH_AT91 || ARCH_DAVINCI || \
ff3042fb 1446 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1da177e4
LT
1447 help
1448 If you say Y here, the LEDs on your machine will be used
1449 to provide useful information about your current system status.
1450
1451 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1452 be able to select which LEDs are active using the options below. If
1453 you are compiling a kernel for the EBSA-110 or the LART however, the
1454 red LED will simply flash regularly to indicate that the system is
1455 still functional. It is safe to say Y here if you have a CATS
1456 system, but the driver will do nothing.
1457
1458config LEDS_TIMER
1459 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
eebdf7d7
DB
1460 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1461 || MACH_OMAP_PERSEUS2
1da177e4 1462 depends on LEDS
0567a0c0 1463 depends on !GENERIC_CLOCKEVENTS
1da177e4
LT
1464 default y if ARCH_EBSA110
1465 help
1466 If you say Y here, one of the system LEDs (the green one on the
1467 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1468 will flash regularly to indicate that the system is still
1469 operational. This is mainly useful to kernel hackers who are
1470 debugging unstable kernels.
1471
1472 The LART uses the same LED for both Timer LED and CPU usage LED
1473 functions. You may choose to use both, but the Timer LED function
1474 will overrule the CPU usage LED.
1475
1476config LEDS_CPU
1477 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
eebdf7d7
DB
1478 !ARCH_OMAP) \
1479 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1480 || MACH_OMAP_PERSEUS2
1da177e4
LT
1481 depends on LEDS
1482 help
1483 If you say Y here, the red LED will be used to give a good real
1484 time indication of CPU usage, by lighting whenever the idle task
1485 is not currently executing.
1486
1487 The LART uses the same LED for both Timer LED and CPU usage LED
1488 functions. You may choose to use both, but the Timer LED function
1489 will overrule the CPU usage LED.
1490
1491config ALIGNMENT_TRAP
1492 bool
f12d0d7c 1493 depends on CPU_CP15_MMU
1da177e4 1494 default y if !ARCH_EBSA110
e119bfff 1495 select HAVE_PROC_CPU if PROC_FS
1da177e4 1496 help
84eb8d06 1497 ARM processors cannot fetch/store information which is not
1da177e4
LT
1498 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1499 address divisible by 4. On 32-bit ARM processors, these non-aligned
1500 fetch/store instructions will be emulated in software if you say
1501 here, which has a severe performance impact. This is necessary for
1502 correct operation of some network protocols. With an IP-only
1503 configuration it is safe to say N, otherwise say Y.
1504
39ec58f3
LB
1505config UACCESS_WITH_MEMCPY
1506 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1507 depends on MMU && EXPERIMENTAL
1508 default y if CPU_FEROCEON
1509 help
1510 Implement faster copy_to_user and clear_user methods for CPU
1511 cores where a 8-word STM instruction give significantly higher
1512 memory write throughput than a sequence of individual 32bit stores.
1513
1514 A possible side effect is a slight increase in scheduling latency
1515 between threads sharing the same address space if they invoke
1516 such copy operations with large buffers.
1517
1518 However, if the CPU data cache is using a write-allocate mode,
1519 this option is unlikely to provide any performance gain.
1520
70c70d97
NP
1521config SECCOMP
1522 bool
1523 prompt "Enable seccomp to safely compute untrusted bytecode"
1524 ---help---
1525 This kernel feature is useful for number crunching applications
1526 that may need to compute untrusted bytecode during their
1527 execution. By using pipes or other transports made available to
1528 the process as file descriptors supporting the read/write
1529 syscalls, it's possible to isolate those applications in
1530 their own address space using seccomp. Once seccomp is
1531 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1532 and the task is only allowed to execute a few safe syscalls
1533 defined by each seccomp mode.
1534
c743f380
NP
1535config CC_STACKPROTECTOR
1536 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1537 help
1538 This option turns on the -fstack-protector GCC feature. This
1539 feature puts, at the beginning of functions, a canary value on
1540 the stack just before the return address, and validates
1541 the value just before actually returning. Stack based buffer
1542 overflows (that need to overwrite this return address) now also
1543 overwrite the canary, which gets detected and the attack is then
1544 neutralized via a kernel panic.
1545 This feature requires gcc version 4.2 or above.
1546
73a65b3f
UKK
1547config DEPRECATED_PARAM_STRUCT
1548 bool "Provide old way to pass kernel parameters"
1549 help
1550 This was deprecated in 2001 and announced to live on for 5 years.
1551 Some old boot loaders still use this way.
1552
1da177e4
LT
1553endmenu
1554
1555menu "Boot options"
1556
1557# Compressed boot loader in ROM. Yes, we really want to ask about
1558# TEXT and BSS so we preserve their values in the config files.
1559config ZBOOT_ROM_TEXT
1560 hex "Compressed ROM boot loader base address"
1561 default "0"
1562 help
1563 The physical address at which the ROM-able zImage is to be
1564 placed in the target. Platforms which normally make use of
1565 ROM-able zImage formats normally set this to a suitable
1566 value in their defconfig file.
1567
1568 If ZBOOT_ROM is not enabled, this has no effect.
1569
1570config ZBOOT_ROM_BSS
1571 hex "Compressed ROM boot loader BSS address"
1572 default "0"
1573 help
f8c440b2
DF
1574 The base address of an area of read/write memory in the target
1575 for the ROM-able zImage which must be available while the
1576 decompressor is running. It must be large enough to hold the
1577 entire decompressed kernel plus an additional 128 KiB.
1578 Platforms which normally make use of ROM-able zImage formats
1579 normally set this to a suitable value in their defconfig file.
1da177e4
LT
1580
1581 If ZBOOT_ROM is not enabled, this has no effect.
1582
1583config ZBOOT_ROM
1584 bool "Compressed boot loader in ROM/flash"
1585 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1586 help
1587 Say Y here if you intend to execute your compressed kernel image
1588 (zImage) directly from ROM or flash. If unsure, say N.
1589
1590config CMDLINE
1591 string "Default kernel command string"
1592 default ""
1593 help
1594 On some architectures (EBSA110 and CATS), there is currently no way
1595 for the boot loader to pass arguments to the kernel. For these
1596 architectures, you should supply some command-line options at build
1597 time by entering them here. As a minimum, you should specify the
1598 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1599
92d2040d
AH
1600config CMDLINE_FORCE
1601 bool "Always use the default kernel command string"
1602 depends on CMDLINE != ""
1603 help
1604 Always use the default kernel command string, even if the boot
1605 loader passes other arguments to the kernel.
1606 This is useful if you cannot or don't want to change the
1607 command-line options your boot loader passes to the kernel.
1608
1609 If unsure, say N.
1610
1da177e4
LT
1611config XIP_KERNEL
1612 bool "Kernel Execute-In-Place from ROM"
1613 depends on !ZBOOT_ROM
1614 help
1615 Execute-In-Place allows the kernel to run from non-volatile storage
1616 directly addressable by the CPU, such as NOR flash. This saves RAM
1617 space since the text section of the kernel is not loaded from flash
1618 to RAM. Read-write sections, such as the data section and stack,
1619 are still copied to RAM. The XIP kernel is not compressed since
1620 it has to run directly from flash, so it will take more space to
1621 store it. The flash address used to link the kernel object files,
1622 and for storing it, is configuration dependent. Therefore, if you
1623 say Y here, you must know the proper physical address where to
1624 store the kernel image depending on your own flash memory usage.
1625
1626 Also note that the make target becomes "make xipImage" rather than
1627 "make zImage" or "make Image". The final kernel binary to put in
1628 ROM memory will be arch/arm/boot/xipImage.
1629
1630 If unsure, say N.
1631
1632config XIP_PHYS_ADDR
1633 hex "XIP Kernel Physical Location"
1634 depends on XIP_KERNEL
1635 default "0x00080000"
1636 help
1637 This is the physical address in your flash memory the kernel will
1638 be linked for and stored to. This address is dependent on your
1639 own flash usage.
1640
c587e4a6
RP
1641config KEXEC
1642 bool "Kexec system call (EXPERIMENTAL)"
1643 depends on EXPERIMENTAL
1644 help
1645 kexec is a system call that implements the ability to shutdown your
1646 current kernel, and to start another kernel. It is like a reboot
01dd2fbf 1647 but it is independent of the system firmware. And like a reboot
c587e4a6
RP
1648 you can start any kernel with it, not just Linux.
1649
1650 It is an ongoing process to be certain the hardware in a machine
1651 is properly shutdown, so do not be surprised if this code does not
1652 initially work for you. It may help to enable device hotplugging
1653 support.
1654
4cd9d6f7
RP
1655config ATAGS_PROC
1656 bool "Export atags in procfs"
b98d7291
UL
1657 depends on KEXEC
1658 default y
4cd9d6f7
RP
1659 help
1660 Should the atags used to boot the kernel be exported in an "atags"
1661 file in procfs. Useful with kexec.
1662
e69edc79
EM
1663config AUTO_ZRELADDR
1664 bool "Auto calculation of the decompressed kernel image address"
1665 depends on !ZBOOT_ROM && !ARCH_U300
1666 help
1667 ZRELADDR is the physical address where the decompressed kernel
1668 image will be placed. If AUTO_ZRELADDR is selected, the address
1669 will be determined at run-time by masking the current IP with
1670 0xf8000000. This assumes the zImage being placed in the first 128MB
1671 from start of memory.
1672
1da177e4
LT
1673endmenu
1674
ac9d7efc 1675menu "CPU Power Management"
1da177e4 1676
89c52ed4 1677if ARCH_HAS_CPUFREQ
1da177e4
LT
1678
1679source "drivers/cpufreq/Kconfig"
1680
64f102b6
YS
1681config CPU_FREQ_IMX
1682 tristate "CPUfreq driver for i.MX CPUs"
1683 depends on ARCH_MXC && CPU_FREQ
1684 help
1685 This enables the CPUfreq driver for i.MX CPUs.
1686
1da177e4
LT
1687config CPU_FREQ_SA1100
1688 bool
1da177e4
LT
1689
1690config CPU_FREQ_SA1110
1691 bool
1da177e4
LT
1692
1693config CPU_FREQ_INTEGRATOR
1694 tristate "CPUfreq driver for ARM Integrator CPUs"
1695 depends on ARCH_INTEGRATOR && CPU_FREQ
1696 default y
1697 help
1698 This enables the CPUfreq driver for ARM Integrator CPUs.
1699
1700 For details, take a look at <file:Documentation/cpu-freq>.
1701
1702 If in doubt, say Y.
1703
9e2697ff
RK
1704config CPU_FREQ_PXA
1705 bool
1706 depends on CPU_FREQ && ARCH_PXA && PXA25x
1707 default y
1708 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1709
b3748ddd
MB
1710config CPU_FREQ_S3C64XX
1711 bool "CPUfreq support for Samsung S3C64XX CPUs"
1712 depends on CPU_FREQ && CPU_S3C6410
1713
9d56c02a
BD
1714config CPU_FREQ_S3C
1715 bool
1716 help
1717 Internal configuration node for common cpufreq on Samsung SoC
1718
1719config CPU_FREQ_S3C24XX
1720 bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1721 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1722 select CPU_FREQ_S3C
1723 help
1724 This enables the CPUfreq driver for the Samsung S3C24XX family
1725 of CPUs.
1726
1727 For details, take a look at <file:Documentation/cpu-freq>.
1728
1729 If in doubt, say N.
1730
1731config CPU_FREQ_S3C24XX_PLL
1732 bool "Support CPUfreq changing of PLL frequency"
1733 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1734 help
1735 Compile in support for changing the PLL frequency from the
1736 S3C24XX series CPUfreq driver. The PLL takes time to settle
1737 after a frequency change, so by default it is not enabled.
1738
1739 This also means that the PLL tables for the selected CPU(s) will
1740 be built which may increase the size of the kernel image.
1741
1742config CPU_FREQ_S3C24XX_DEBUG
1743 bool "Debug CPUfreq Samsung driver core"
1744 depends on CPU_FREQ_S3C24XX
1745 help
1746 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1747
1748config CPU_FREQ_S3C24XX_IODEBUG
1749 bool "Debug CPUfreq Samsung driver IO timing"
1750 depends on CPU_FREQ_S3C24XX
1751 help
1752 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1753
e6d197a6
BD
1754config CPU_FREQ_S3C24XX_DEBUGFS
1755 bool "Export debugfs for CPUFreq"
1756 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1757 help
1758 Export status information via debugfs.
1759
1da177e4
LT
1760endif
1761
ac9d7efc
RK
1762source "drivers/cpuidle/Kconfig"
1763
1764endmenu
1765
1da177e4
LT
1766menu "Floating point emulation"
1767
1768comment "At least one emulation must be selected"
1769
1770config FPE_NWFPE
1771 bool "NWFPE math emulation"
8993a44c 1772 depends on !AEABI || OABI_COMPAT
1da177e4
LT
1773 ---help---
1774 Say Y to include the NWFPE floating point emulator in the kernel.
1775 This is necessary to run most binaries. Linux does not currently
1776 support floating point hardware so you need to say Y here even if
1777 your machine has an FPA or floating point co-processor podule.
1778
1779 You may say N here if you are going to load the Acorn FPEmulator
1780 early in the bootup.
1781
1782config FPE_NWFPE_XP
1783 bool "Support extended precision"
bedf142b 1784 depends on FPE_NWFPE
1da177e4
LT
1785 help
1786 Say Y to include 80-bit support in the kernel floating-point
1787 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1788 Note that gcc does not generate 80-bit operations by default,
1789 so in most cases this option only enlarges the size of the
1790 floating point emulator without any good reason.
1791
1792 You almost surely want to say N here.
1793
1794config FPE_FASTFPE
1795 bool "FastFPE math emulation (EXPERIMENTAL)"
8993a44c 1796 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1da177e4
LT
1797 ---help---
1798 Say Y here to include the FAST floating point emulator in the kernel.
1799 This is an experimental much faster emulator which now also has full
1800 precision for the mantissa. It does not support any exceptions.
1801 It is very simple, and approximately 3-6 times faster than NWFPE.
1802
1803 It should be sufficient for most programs. It may be not suitable
1804 for scientific calculations, but you have to check this for yourself.
1805 If you do not feel you need a faster FP emulation you should better
1806 choose NWFPE.
1807
1808config VFP
1809 bool "VFP-format floating point maths"
c00d4ffd 1810 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1da177e4
LT
1811 help
1812 Say Y to include VFP support code in the kernel. This is needed
1813 if your hardware includes a VFP unit.
1814
1815 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1816 release notes and additional status information.
1817
1818 Say N if your target does not have VFP hardware.
1819
25ebee02
CM
1820config VFPv3
1821 bool
1822 depends on VFP
1823 default y if CPU_V7
1824
b5872db4
CM
1825config NEON
1826 bool "Advanced SIMD (NEON) Extension support"
1827 depends on VFPv3 && CPU_V7
1828 help
1829 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1830 Extension.
1831
1da177e4
LT
1832endmenu
1833
1834menu "Userspace binary formats"
1835
1836source "fs/Kconfig.binfmt"
1837
1838config ARTHUR
1839 tristate "RISC OS personality"
704bdda0 1840 depends on !AEABI
1da177e4
LT
1841 help
1842 Say Y here to include the kernel code necessary if you want to run
1843 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1844 experimental; if this sounds frightening, say N and sleep in peace.
1845 You can also say M here to compile this support as a module (which
1846 will be called arthur).
1847
1848endmenu
1849
1850menu "Power management options"
1851
eceab4ac 1852source "kernel/power/Kconfig"
1da177e4 1853
f4cb5700
JB
1854config ARCH_SUSPEND_POSSIBLE
1855 def_bool y
1856
1da177e4
LT
1857endmenu
1858
d5950b43
SR
1859source "net/Kconfig"
1860
ac25150f 1861source "drivers/Kconfig"
1da177e4
LT
1862
1863source "fs/Kconfig"
1864
1da177e4
LT
1865source "arch/arm/Kconfig.debug"
1866
1867source "security/Kconfig"
1868
1869source "crypto/Kconfig"
1870
1871source "lib/Kconfig"
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