ARM: 6294/1: etm: do a dummy read from OSSRR during initialization
[deliverable/linux.git] / arch / arm / Kconfig
CommitLineData
1da177e4
LT
1#
2# For a description of the syntax of this configuration file,
3# see Documentation/kbuild/kconfig-language.txt.
4#
5
6mainmenu "Linux Kernel Configuration"
7
8config ARM
9 bool
10 default y
e17c6d56 11 select HAVE_AOUT
2064c946 12 select HAVE_IDE
2778f620 13 select HAVE_MEMBLOCK
12b824fb 14 select RTC_LIB
75e7153a 15 select SYS_SUPPORTS_APM_EMULATION
24b44a66 16 select GENERIC_ATOMIC64 if (!CPU_32v6K)
fe166148 17 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
5cbad0eb 18 select HAVE_ARCH_KGDB
3f550096 19 select HAVE_KPROBES if (!XIP_KERNEL)
9edddaa2 20 select HAVE_KRETPROBES if (HAVE_KPROBES)
606576ce 21 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
1fe53268 22 select HAVE_GENERIC_DMA_COHERENT
e7db7b42
AT
23 select HAVE_KERNEL_GZIP
24 select HAVE_KERNEL_LZO
6e8699f7 25 select HAVE_KERNEL_LZMA
7ada189f
JI
26 select HAVE_PERF_EVENTS
27 select PERF_USE_VMALLOC
e513f8bf 28 select HAVE_REGS_AND_STACK_ACCESS_API
1da177e4
LT
29 help
30 The ARM series is a line of low-power-consumption RISC chip designs
f6c8965a 31 licensed by ARM Ltd and targeted at embedded applications and
1da177e4 32 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
f6c8965a 33 manufactured, but legacy ARM-based PC hardware remains popular in
1da177e4
LT
34 Europe. There is an ARM Linux project with a web page at
35 <http://www.arm.linux.org.uk/>.
36
1a189b97
RK
37config HAVE_PWM
38 bool
39
75e7153a
RB
40config SYS_SUPPORTS_APM_EMULATION
41 bool
42
0a938b97
DB
43config GENERIC_GPIO
44 bool
0a938b97 45
5cfc8ee0
JS
46config ARCH_USES_GETTIMEOFFSET
47 bool
48 default n
746140c7 49
0567a0c0
KH
50config GENERIC_CLOCKEVENTS
51 bool
0567a0c0 52
a8655e83
CM
53config GENERIC_CLOCKEVENTS_BROADCAST
54 bool
55 depends on GENERIC_CLOCKEVENTS
5388a6b2 56 default y if SMP
a8655e83 57
bc581770
LW
58config HAVE_TCM
59 bool
60 select GENERIC_ALLOCATOR
61
e119bfff
RK
62config HAVE_PROC_CPU
63 bool
64
5ea81769
AV
65config NO_IOPORT
66 bool
5ea81769 67
1da177e4
LT
68config EISA
69 bool
70 ---help---
71 The Extended Industry Standard Architecture (EISA) bus was
72 developed as an open alternative to the IBM MicroChannel bus.
73
74 The EISA bus provided some of the features of the IBM MicroChannel
75 bus while maintaining backward compatibility with cards made for
76 the older ISA bus. The EISA bus saw limited use between 1988 and
77 1995 when it was made obsolete by the PCI bus.
78
79 Say Y here if you are building a kernel for an EISA-based machine.
80
81 Otherwise, say N.
82
83config SBUS
84 bool
85
86config MCA
87 bool
88 help
89 MicroChannel Architecture is found in some IBM PS/2 machines and
90 laptops. It is a bus system similar to PCI or ISA. See
91 <file:Documentation/mca.txt> (and especially the web page given
92 there) before attempting to build an MCA bus kernel.
93
4a2581a0
TG
94config GENERIC_HARDIRQS
95 bool
96 default y
97
f16fb1ec
RK
98config STACKTRACE_SUPPORT
99 bool
100 default y
101
f76e9154
NP
102config HAVE_LATENCYTOP_SUPPORT
103 bool
104 depends on !SMP
105 default y
106
f16fb1ec
RK
107config LOCKDEP_SUPPORT
108 bool
109 default y
110
7ad1bcb2
RK
111config TRACE_IRQFLAGS_SUPPORT
112 bool
113 default y
114
4a2581a0
TG
115config HARDIRQS_SW_RESEND
116 bool
117 default y
118
119config GENERIC_IRQ_PROBE
120 bool
121 default y
122
95c354fe
NP
123config GENERIC_LOCKBREAK
124 bool
125 default y
126 depends on SMP && PREEMPT
127
1da177e4
LT
128config RWSEM_GENERIC_SPINLOCK
129 bool
130 default y
131
132config RWSEM_XCHGADD_ALGORITHM
133 bool
134
f0d1b0b3
DH
135config ARCH_HAS_ILOG2_U32
136 bool
f0d1b0b3
DH
137
138config ARCH_HAS_ILOG2_U64
139 bool
f0d1b0b3 140
89c52ed4
BD
141config ARCH_HAS_CPUFREQ
142 bool
143 help
144 Internal node to signify that the ARCH has CPUFREQ support
145 and that the relevant menu configurations are displayed for
146 it.
147
b89c3b16
AM
148config GENERIC_HWEIGHT
149 bool
150 default y
151
1da177e4
LT
152config GENERIC_CALIBRATE_DELAY
153 bool
154 default y
155
a08b6b79
Z
156config ARCH_MAY_HAVE_PC_FDC
157 bool
158
5ac6da66
CL
159config ZONE_DMA
160 bool
5ac6da66 161
ccd7ab7f
FT
162config NEED_DMA_MAP_STATE
163 def_bool y
164
1da177e4
LT
165config GENERIC_ISA_DMA
166 bool
167
1da177e4
LT
168config FIQ
169 bool
170
034d2f5a
AV
171config ARCH_MTD_XIP
172 bool
173
60a752ef 174config GENERIC_HARDIRQS_NO__DO_IRQ
60a752ef
PZ
175 def_bool y
176
d6d502fa
KK
177config ARM_L1_CACHE_SHIFT_6
178 bool
179 help
180 Setting ARM L1 cache line size to 64 Bytes.
181
c760fc19
HC
182config VECTORS_BASE
183 hex
6afd6fae 184 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
c760fc19
HC
185 default DRAM_BASE if REMAP_VECTORS_TO_RAM
186 default 0x00000000
187 help
188 The base address of exception vectors.
189
1da177e4
LT
190source "init/Kconfig"
191
dc52ddc0
MH
192source "kernel/Kconfig.freezer"
193
1da177e4
LT
194menu "System Type"
195
3c427975
HC
196config MMU
197 bool "MMU-based Paged Memory Management Support"
198 default y
199 help
200 Select if you want MMU-based virtualised addressing space
201 support by paged memory management. If unsure, say 'Y'.
202
ccf50e23
RK
203#
204# The "ARM system type" choice list is ordered alphabetically by option
205# text. Please add new entries in the option alphabetic order.
206#
1da177e4
LT
207choice
208 prompt "ARM system type"
6a0e2430 209 default ARCH_VERSATILE
1da177e4 210
4af6fee1
DS
211config ARCH_AAEC2000
212 bool "Agilent AAEC-2000 based"
c750815e 213 select CPU_ARM920T
4af6fee1 214 select ARM_AMBA
9483a578 215 select HAVE_CLK
5cfc8ee0 216 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
217 help
218 This enables support for systems based on the Agilent AAEC-2000
219
220config ARCH_INTEGRATOR
221 bool "ARM Ltd. Integrator family"
222 select ARM_AMBA
89c52ed4 223 select ARCH_HAS_CPUFREQ
d72fbdf0 224 select COMMON_CLKDEV
c5a0adb5 225 select ICST
13edd86d 226 select GENERIC_CLOCKEVENTS
f4b8b319 227 select PLAT_VERSATILE
4af6fee1
DS
228 help
229 Support for ARM's Integrator platform.
230
231config ARCH_REALVIEW
232 bool "ARM Ltd. RealView family"
233 select ARM_AMBA
cf30fb4a 234 select COMMON_CLKDEV
c5a0adb5 235 select ICST
ae30ceac 236 select GENERIC_CLOCKEVENTS
eb7fffa3 237 select ARCH_WANT_OPTIONAL_GPIOLIB
f4b8b319 238 select PLAT_VERSATILE
e3887714 239 select ARM_TIMER_SP804
b56ba8aa 240 select GPIO_PL061 if GPIOLIB
4af6fee1
DS
241 help
242 This enables support for ARM Ltd RealView boards.
243
244config ARCH_VERSATILE
245 bool "ARM Ltd. Versatile family"
246 select ARM_AMBA
247 select ARM_VIC
71a06da0 248 select COMMON_CLKDEV
c5a0adb5 249 select ICST
89df1272 250 select GENERIC_CLOCKEVENTS
bbeddc43 251 select ARCH_WANT_OPTIONAL_GPIOLIB
f4b8b319 252 select PLAT_VERSATILE
e3887714 253 select ARM_TIMER_SP804
4af6fee1
DS
254 help
255 This enables support for ARM Ltd Versatile board.
256
ceade897
RK
257config ARCH_VEXPRESS
258 bool "ARM Ltd. Versatile Express family"
259 select ARCH_WANT_OPTIONAL_GPIOLIB
260 select ARM_AMBA
261 select ARM_TIMER_SP804
262 select COMMON_CLKDEV
263 select GENERIC_CLOCKEVENTS
ceade897
RK
264 select HAVE_CLK
265 select ICST
266 select PLAT_VERSATILE
267 help
268 This enables support for the ARM Ltd Versatile Express boards.
269
8fc5ffa0
AV
270config ARCH_AT91
271 bool "Atmel AT91"
f373e8c0 272 select ARCH_REQUIRE_GPIOLIB
93686ae8 273 select HAVE_CLK
5cfc8ee0 274 select ARCH_USES_GETTIMEOFFSET
4af6fee1 275 help
2b3b3516
AV
276 This enables support for systems based on the Atmel AT91RM9200,
277 AT91SAM9 and AT91CAP9 processors.
4af6fee1 278
ccf50e23
RK
279config ARCH_BCMRING
280 bool "Broadcom BCMRING"
281 depends on MMU
282 select CPU_V6
283 select ARM_AMBA
284 select COMMON_CLKDEV
ccf50e23
RK
285 select GENERIC_CLOCKEVENTS
286 select ARCH_WANT_OPTIONAL_GPIOLIB
287 help
288 Support for Broadcom's BCMRing platform.
289
1da177e4 290config ARCH_CLPS711X
4af6fee1 291 bool "Cirrus Logic CLPS711x/EP721x-based"
c750815e 292 select CPU_ARM720T
5cfc8ee0 293 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
294 help
295 Support for Cirrus Logic 711x/721x based boards.
1da177e4 296
d94f944e
AV
297config ARCH_CNS3XXX
298 bool "Cavium Networks CNS3XXX family"
299 select CPU_V6
d94f944e
AV
300 select GENERIC_CLOCKEVENTS
301 select ARM_GIC
5f32f7a0 302 select PCI_DOMAINS if PCI
d94f944e
AV
303 help
304 Support for Cavium Networks CNS3XXX platform.
305
788c9700
RK
306config ARCH_GEMINI
307 bool "Cortina Systems Gemini"
308 select CPU_FA526
788c9700 309 select ARCH_REQUIRE_GPIOLIB
5cfc8ee0 310 select ARCH_USES_GETTIMEOFFSET
788c9700
RK
311 help
312 Support for the Cortina Systems Gemini family SoCs
313
1da177e4
LT
314config ARCH_EBSA110
315 bool "EBSA-110"
c750815e 316 select CPU_SA110
f7e68bbf 317 select ISA
c5eb2a2b 318 select NO_IOPORT
5cfc8ee0 319 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
320 help
321 This is an evaluation board for the StrongARM processor available
f6c8965a 322 from Digital. It has limited hardware on-board, including an
1da177e4
LT
323 Ethernet interface, two PCMCIA sockets, two serial ports and a
324 parallel port.
325
e7736d47
LB
326config ARCH_EP93XX
327 bool "EP93xx-based"
c750815e 328 select CPU_ARM920T
e7736d47
LB
329 select ARM_AMBA
330 select ARM_VIC
ae696fd5 331 select COMMON_CLKDEV
7444a72e 332 select ARCH_REQUIRE_GPIOLIB
eb33575c 333 select ARCH_HAS_HOLES_MEMORYMODEL
5cfc8ee0 334 select ARCH_USES_GETTIMEOFFSET
e7736d47
LB
335 help
336 This enables support for the Cirrus EP93xx series of CPUs.
337
1da177e4
LT
338config ARCH_FOOTBRIDGE
339 bool "FootBridge"
c750815e 340 select CPU_SA110
1da177e4 341 select FOOTBRIDGE
5cfc8ee0 342 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
343 help
344 Support for systems based on the DC21285 companion chip
345 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1da177e4 346
788c9700
RK
347config ARCH_MXC
348 bool "Freescale MXC/iMX-based"
788c9700 349 select GENERIC_CLOCKEVENTS
788c9700 350 select ARCH_REQUIRE_GPIOLIB
03e09cd8 351 select COMMON_CLKDEV
788c9700
RK
352 help
353 Support for Freescale MXC/iMX-based family of processors
354
7bd0f2f5 355config ARCH_STMP3XXX
356 bool "Freescale STMP3xxx"
357 select CPU_ARM926T
7bd0f2f5 358 select COMMON_CLKDEV
359 select ARCH_REQUIRE_GPIOLIB
7bd0f2f5 360 select GENERIC_CLOCKEVENTS
7bd0f2f5 361 select USB_ARCH_HAS_EHCI
362 help
363 Support for systems based on the Freescale 3xxx CPUs.
364
4af6fee1
DS
365config ARCH_NETX
366 bool "Hilscher NetX based"
c750815e 367 select CPU_ARM926T
4af6fee1 368 select ARM_VIC
2fcfe6b8 369 select GENERIC_CLOCKEVENTS
f999b8bd 370 help
4af6fee1
DS
371 This enables support for systems based on the Hilscher NetX Soc
372
373config ARCH_H720X
374 bool "Hynix HMS720x-based"
c750815e 375 select CPU_ARM720T
4af6fee1 376 select ISA_DMA_API
5cfc8ee0 377 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
378 help
379 This enables support for systems based on the Hynix HMS720x
380
3b938be6
RK
381config ARCH_IOP13XX
382 bool "IOP13xx-based"
383 depends on MMU
c750815e 384 select CPU_XSC3
3b938be6
RK
385 select PLAT_IOP
386 select PCI
387 select ARCH_SUPPORTS_MSI
8d5796d2 388 select VMSPLIT_1G
3b938be6
RK
389 help
390 Support for Intel's IOP13XX (XScale) family of processors.
391
3f7e5815
LB
392config ARCH_IOP32X
393 bool "IOP32x-based"
a4f7e763 394 depends on MMU
c750815e 395 select CPU_XSCALE
7ae1f7ec 396 select PLAT_IOP
f7e68bbf 397 select PCI
bb2b180c 398 select ARCH_REQUIRE_GPIOLIB
f999b8bd 399 help
3f7e5815
LB
400 Support for Intel's 80219 and IOP32X (XScale) family of
401 processors.
402
403config ARCH_IOP33X
404 bool "IOP33x-based"
405 depends on MMU
c750815e 406 select CPU_XSCALE
7ae1f7ec 407 select PLAT_IOP
3f7e5815 408 select PCI
bb2b180c 409 select ARCH_REQUIRE_GPIOLIB
3f7e5815
LB
410 help
411 Support for Intel's IOP33X (XScale) family of processors.
1da177e4 412
3b938be6
RK
413config ARCH_IXP23XX
414 bool "IXP23XX-based"
a4f7e763 415 depends on MMU
c750815e 416 select CPU_XSC3
3b938be6 417 select PCI
5cfc8ee0 418 select ARCH_USES_GETTIMEOFFSET
f999b8bd 419 help
3b938be6 420 Support for Intel's IXP23xx (XScale) family of processors.
1da177e4
LT
421
422config ARCH_IXP2000
423 bool "IXP2400/2800-based"
a4f7e763 424 depends on MMU
c750815e 425 select CPU_XSCALE
f7e68bbf 426 select PCI
5cfc8ee0 427 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
428 help
429 Support for Intel's IXP2400/2800 (XScale) family of processors.
1da177e4 430
3b938be6
RK
431config ARCH_IXP4XX
432 bool "IXP4xx-based"
a4f7e763 433 depends on MMU
c750815e 434 select CPU_XSCALE
8858e9af 435 select GENERIC_GPIO
3b938be6 436 select GENERIC_CLOCKEVENTS
485bdde7 437 select DMABOUNCE if PCI
c4713074 438 help
3b938be6 439 Support for Intel's IXP4XX (XScale) family of processors.
c4713074 440
edabd38e
SB
441config ARCH_DOVE
442 bool "Marvell Dove"
443 select PCI
edabd38e 444 select ARCH_REQUIRE_GPIOLIB
edabd38e
SB
445 select GENERIC_CLOCKEVENTS
446 select PLAT_ORION
447 help
448 Support for the Marvell Dove SoC 88AP510
449
651c74c7
SB
450config ARCH_KIRKWOOD
451 bool "Marvell Kirkwood"
c750815e 452 select CPU_FEROCEON
651c74c7 453 select PCI
a8865655 454 select ARCH_REQUIRE_GPIOLIB
651c74c7
SB
455 select GENERIC_CLOCKEVENTS
456 select PLAT_ORION
457 help
458 Support for the following Marvell Kirkwood series SoCs:
459 88F6180, 88F6192 and 88F6281.
460
777f9beb
LB
461config ARCH_LOKI
462 bool "Marvell Loki (88RC8480)"
c750815e 463 select CPU_FEROCEON
777f9beb
LB
464 select GENERIC_CLOCKEVENTS
465 select PLAT_ORION
466 help
467 Support for the Marvell Loki (88RC8480) SoC.
468
40805949
KW
469config ARCH_LPC32XX
470 bool "NXP LPC32XX"
471 select CPU_ARM926T
472 select ARCH_REQUIRE_GPIOLIB
473 select HAVE_IDE
474 select ARM_AMBA
475 select USB_ARCH_HAS_OHCI
476 select COMMON_CLKDEV
477 select GENERIC_TIME
478 select GENERIC_CLOCKEVENTS
479 help
480 Support for the NXP LPC32XX family of processors
481
794d15b2
SS
482config ARCH_MV78XX0
483 bool "Marvell MV78xx0"
c750815e 484 select CPU_FEROCEON
794d15b2 485 select PCI
a8865655 486 select ARCH_REQUIRE_GPIOLIB
794d15b2
SS
487 select GENERIC_CLOCKEVENTS
488 select PLAT_ORION
489 help
490 Support for the following Marvell MV78xx0 series SoCs:
491 MV781x0, MV782x0.
492
9dd0b194 493config ARCH_ORION5X
585cf175
TP
494 bool "Marvell Orion"
495 depends on MMU
c750815e 496 select CPU_FEROCEON
038ee083 497 select PCI
a8865655 498 select ARCH_REQUIRE_GPIOLIB
51cbff1d 499 select GENERIC_CLOCKEVENTS
69b02f6a 500 select PLAT_ORION
585cf175 501 help
9dd0b194 502 Support for the following Marvell Orion 5x series SoCs:
d2b2a6bb 503 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
d323ade1 504 Orion-2 (5281), Orion-1-90 (6183).
585cf175 505
788c9700 506config ARCH_MMP
2f7e8fae 507 bool "Marvell PXA168/910/MMP2"
788c9700 508 depends on MMU
788c9700 509 select ARCH_REQUIRE_GPIOLIB
788c9700 510 select COMMON_CLKDEV
788c9700
RK
511 select GENERIC_CLOCKEVENTS
512 select TICK_ONESHOT
513 select PLAT_PXA
514 help
2f7e8fae 515 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
788c9700
RK
516
517config ARCH_KS8695
518 bool "Micrel/Kendin KS8695"
519 select CPU_ARM922T
98830bc9 520 select ARCH_REQUIRE_GPIOLIB
5cfc8ee0 521 select ARCH_USES_GETTIMEOFFSET
788c9700
RK
522 help
523 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
524 System-on-Chip devices.
525
526config ARCH_NS9XXX
527 bool "NetSilicon NS9xxx"
528 select CPU_ARM926T
529 select GENERIC_GPIO
788c9700
RK
530 select GENERIC_CLOCKEVENTS
531 select HAVE_CLK
532 help
533 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
534 System.
535
536 <http://www.digi.com/products/microprocessors/index.jsp>
537
538config ARCH_W90X900
539 bool "Nuvoton W90X900 CPU"
540 select CPU_ARM926T
c52d3d68 541 select ARCH_REQUIRE_GPIOLIB
0e4a34bb 542 select COMMON_CLKDEV
58b5369e 543 select GENERIC_CLOCKEVENTS
788c9700 544 help
a8bc4ead 545 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
546 At present, the w90x900 has been renamed nuc900, regarding
547 the ARM series product line, you can login the following
548 link address to know more.
549
550 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
551 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
788c9700 552
a62e9030 553config ARCH_NUC93X
554 bool "Nuvoton NUC93X CPU"
555 select CPU_ARM926T
a62e9030 556 select COMMON_CLKDEV
557 help
558 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
559 low-power and high performance MPEG-4/JPEG multimedia controller chip.
560
c5f80065
EG
561config ARCH_TEGRA
562 bool "NVIDIA Tegra"
563 select GENERIC_TIME
564 select GENERIC_CLOCKEVENTS
565 select GENERIC_GPIO
566 select HAVE_CLK
d8611961 567 select COMMON_CLKDEV
c5f80065
EG
568 select ARCH_HAS_BARRIERS if CACHE_L2X0
569 help
570 This enables support for NVIDIA Tegra based systems (Tegra APX,
571 Tegra 6xx and Tegra 2 series).
572
4af6fee1
DS
573config ARCH_PNX4008
574 bool "Philips Nexperia PNX4008 Mobile"
c750815e 575 select CPU_ARM926T
6985a5ad 576 select COMMON_CLKDEV
5cfc8ee0 577 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
578 help
579 This enables support for Philips PNX4008 mobile platform.
580
1da177e4 581config ARCH_PXA
2c8086a5 582 bool "PXA2xx/PXA3xx-based"
a4f7e763 583 depends on MMU
034d2f5a 584 select ARCH_MTD_XIP
89c52ed4 585 select ARCH_HAS_CPUFREQ
8c3abc7d 586 select COMMON_CLKDEV
7444a72e 587 select ARCH_REQUIRE_GPIOLIB
981d0f39 588 select GENERIC_CLOCKEVENTS
a88264c2 589 select TICK_ONESHOT
bd5ce433 590 select PLAT_PXA
f999b8bd 591 help
2c8086a5 592 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
1da177e4 593
788c9700
RK
594config ARCH_MSM
595 bool "Qualcomm MSM"
4b536b8d 596 select HAVE_CLK
49cbe786 597 select GENERIC_CLOCKEVENTS
923a081c 598 select ARCH_REQUIRE_GPIOLIB
49cbe786 599 help
4b53eb4f
DW
600 Support for Qualcomm MSM/QSD based systems. This runs on the
601 apps processor of the MSM/QSD and depends on a shared memory
602 interface to the modem processor which runs the baseband
603 stack and controls some vital subsystems
604 (clock and power control, etc).
49cbe786 605
c793c1b0
MD
606config ARCH_SHMOBILE
607 bool "Renesas SH-Mobile"
608 help
609 Support for Renesas's SH-Mobile ARM platforms
610
1da177e4
LT
611config ARCH_RPC
612 bool "RiscPC"
613 select ARCH_ACORN
614 select FIQ
615 select TIMER_ACORN
a08b6b79 616 select ARCH_MAY_HAVE_PC_FDC
341eb781 617 select HAVE_PATA_PLATFORM
065909b9 618 select ISA_DMA_API
5ea81769 619 select NO_IOPORT
07f841b7 620 select ARCH_SPARSEMEM_ENABLE
5cfc8ee0 621 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
622 help
623 On the Acorn Risc-PC, Linux can support the internal IDE disk and
624 CD-ROM interface, serial and parallel port, and the floppy drive.
625
626config ARCH_SA1100
627 bool "SA1100-based"
c750815e 628 select CPU_SA1100
f7e68bbf 629 select ISA
05944d74 630 select ARCH_SPARSEMEM_ENABLE
034d2f5a 631 select ARCH_MTD_XIP
89c52ed4 632 select ARCH_HAS_CPUFREQ
1937f5b9 633 select CPU_FREQ
3e238be2 634 select GENERIC_CLOCKEVENTS
9483a578 635 select HAVE_CLK
3e238be2 636 select TICK_ONESHOT
7444a72e 637 select ARCH_REQUIRE_GPIOLIB
f999b8bd
MM
638 help
639 Support for StrongARM 11x0 based boards.
1da177e4
LT
640
641config ARCH_S3C2410
63b1f51b 642 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
0a938b97 643 select GENERIC_GPIO
9d56c02a 644 select ARCH_HAS_CPUFREQ
9483a578 645 select HAVE_CLK
5cfc8ee0 646 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
647 help
648 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
649 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
f6c8965a 650 the Samsung SMDK2410 development board (and derivatives).
1da177e4 651
63b1f51b
BD
652 Note, the S3C2416 and the S3C2450 are so close that they even share
653 the same SoC ID code. This means that there is no seperate machine
654 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
655
a08ab637
BD
656config ARCH_S3C64XX
657 bool "Samsung S3C64XX"
89f1fa08 658 select PLAT_SAMSUNG
89f0ce72 659 select CPU_V6
89f0ce72 660 select ARM_VIC
a08ab637 661 select HAVE_CLK
89f0ce72 662 select NO_IOPORT
5cfc8ee0 663 select ARCH_USES_GETTIMEOFFSET
89c52ed4 664 select ARCH_HAS_CPUFREQ
89f0ce72
BD
665 select ARCH_REQUIRE_GPIOLIB
666 select SAMSUNG_CLKSRC
667 select SAMSUNG_IRQ_VIC_TIMER
668 select SAMSUNG_IRQ_UART
669 select S3C_GPIO_TRACK
670 select S3C_GPIO_PULL_UPDOWN
671 select S3C_GPIO_CFG_S3C24XX
672 select S3C_GPIO_CFG_S3C64XX
673 select S3C_DEV_NAND
674 select USB_ARCH_HAS_OHCI
675 select SAMSUNG_GPIOLIB_4BIT
a08ab637
BD
676 help
677 Samsung S3C64XX series based systems
678
c4ffccdd
KK
679config ARCH_S5P6440
680 bool "Samsung S5P6440"
681 select CPU_V6
682 select GENERIC_GPIO
683 select HAVE_CLK
925c68cd 684 select ARCH_USES_GETTIMEOFFSET
c4ffccdd
KK
685 help
686 Samsung S5P6440 CPU based systems
687
550db7f1
KK
688config ARCH_S5P6442
689 bool "Samsung S5P6442"
690 select CPU_V6
691 select GENERIC_GPIO
692 select HAVE_CLK
925c68cd 693 select ARCH_USES_GETTIMEOFFSET
550db7f1
KK
694 help
695 Samsung S5P6442 CPU based systems
696
acc84707
MS
697config ARCH_S5PC100
698 bool "Samsung S5PC100"
5a7652f2
BM
699 select GENERIC_GPIO
700 select HAVE_CLK
701 select CPU_V7
d6d502fa 702 select ARM_L1_CACHE_SHIFT_6
925c68cd 703 select ARCH_USES_GETTIMEOFFSET
5a7652f2 704 help
acc84707 705 Samsung S5PC100 series based systems
5a7652f2 706
170f4e42
KK
707config ARCH_S5PV210
708 bool "Samsung S5PV210/S5PC110"
709 select CPU_V7
710 select GENERIC_GPIO
711 select HAVE_CLK
712 select ARM_L1_CACHE_SHIFT_6
925c68cd 713 select ARCH_USES_GETTIMEOFFSET
170f4e42
KK
714 help
715 Samsung S5PV210/S5PC110 series based systems
716
1da177e4
LT
717config ARCH_SHARK
718 bool "Shark"
c750815e 719 select CPU_SA110
f7e68bbf
RK
720 select ISA
721 select ISA_DMA
3bca103a 722 select ZONE_DMA
f7e68bbf 723 select PCI
5cfc8ee0 724 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
725 help
726 Support for the StrongARM based Digital DNARD machine, also known
727 as "Shark" (<http://www.shark-linux.de/shark.html>).
1da177e4
LT
728
729config ARCH_LH7A40X
730 bool "Sharp LH7A40X"
c750815e 731 select CPU_ARM922T
4ba3f7c5 732 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
5cfc8ee0 733 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
734 help
735 Say Y here for systems based on one of the Sharp LH7A40X
736 System on a Chip processors. These CPUs include an ARM922T
737 core with a wide array of integrated devices for
738 hand-held and low-power applications.
739
d98aac75
LW
740config ARCH_U300
741 bool "ST-Ericsson U300 Series"
742 depends on MMU
743 select CPU_ARM926T
bc581770 744 select HAVE_TCM
d98aac75
LW
745 select ARM_AMBA
746 select ARM_VIC
d98aac75 747 select GENERIC_CLOCKEVENTS
d98aac75
LW
748 select COMMON_CLKDEV
749 select GENERIC_GPIO
750 help
751 Support for ST-Ericsson U300 series mobile platforms.
752
ccf50e23
RK
753config ARCH_U8500
754 bool "ST-Ericsson U8500 Series"
755 select CPU_V7
756 select ARM_AMBA
ccf50e23
RK
757 select GENERIC_CLOCKEVENTS
758 select COMMON_CLKDEV
94bdc0e2 759 select ARCH_REQUIRE_GPIOLIB
ccf50e23
RK
760 help
761 Support for ST-Ericsson's Ux500 architecture
762
763config ARCH_NOMADIK
764 bool "STMicroelectronics Nomadik"
765 select ARM_AMBA
766 select ARM_VIC
767 select CPU_ARM926T
ccf50e23 768 select COMMON_CLKDEV
ccf50e23 769 select GENERIC_CLOCKEVENTS
ccf50e23
RK
770 select ARCH_REQUIRE_GPIOLIB
771 help
772 Support for the Nomadik platform by ST-Ericsson
773
7c6337e2
KH
774config ARCH_DAVINCI
775 bool "TI DaVinci"
7c6337e2 776 select GENERIC_CLOCKEVENTS
dce1115b 777 select ARCH_REQUIRE_GPIOLIB
3bca103a 778 select ZONE_DMA
9232fcc9 779 select HAVE_IDE
c5b736d0 780 select COMMON_CLKDEV
20e9969b 781 select GENERIC_ALLOCATOR
ae88e05a 782 select ARCH_HAS_HOLES_MEMORYMODEL
7c6337e2
KH
783 help
784 Support for TI's DaVinci platform.
785
3b938be6
RK
786config ARCH_OMAP
787 bool "TI OMAP"
9483a578 788 select HAVE_CLK
7444a72e 789 select ARCH_REQUIRE_GPIOLIB
89c52ed4 790 select ARCH_HAS_CPUFREQ
06cad098 791 select GENERIC_CLOCKEVENTS
9af915da 792 select ARCH_HAS_HOLES_MEMORYMODEL
3b938be6
RK
793 help
794 Support for TI's OMAP platform (OMAP1 and OMAP2).
795
cee37e50 796config PLAT_SPEAR
797 bool "ST SPEAr"
798 select ARM_AMBA
799 select ARCH_REQUIRE_GPIOLIB
800 select COMMON_CLKDEV
801 select GENERIC_CLOCKEVENTS
cee37e50 802 select HAVE_CLK
803 help
804 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
805
1da177e4
LT
806endchoice
807
ccf50e23
RK
808#
809# This is sorted alphabetically by mach-* pathname. However, plat-*
810# Kconfigs may be included either alphabetically (according to the
811# plat- suffix) or along side the corresponding mach-* source.
812#
95b8f20f
RK
813source "arch/arm/mach-aaec2000/Kconfig"
814
815source "arch/arm/mach-at91/Kconfig"
816
817source "arch/arm/mach-bcmring/Kconfig"
818
1da177e4
LT
819source "arch/arm/mach-clps711x/Kconfig"
820
d94f944e
AV
821source "arch/arm/mach-cns3xxx/Kconfig"
822
95b8f20f
RK
823source "arch/arm/mach-davinci/Kconfig"
824
825source "arch/arm/mach-dove/Kconfig"
826
e7736d47
LB
827source "arch/arm/mach-ep93xx/Kconfig"
828
1da177e4
LT
829source "arch/arm/mach-footbridge/Kconfig"
830
59d3a193
PZ
831source "arch/arm/mach-gemini/Kconfig"
832
95b8f20f
RK
833source "arch/arm/mach-h720x/Kconfig"
834
1da177e4
LT
835source "arch/arm/mach-integrator/Kconfig"
836
3f7e5815
LB
837source "arch/arm/mach-iop32x/Kconfig"
838
839source "arch/arm/mach-iop33x/Kconfig"
1da177e4 840
285f5fa7
DW
841source "arch/arm/mach-iop13xx/Kconfig"
842
1da177e4
LT
843source "arch/arm/mach-ixp4xx/Kconfig"
844
845source "arch/arm/mach-ixp2000/Kconfig"
846
c4713074
LB
847source "arch/arm/mach-ixp23xx/Kconfig"
848
95b8f20f
RK
849source "arch/arm/mach-kirkwood/Kconfig"
850
851source "arch/arm/mach-ks8695/Kconfig"
852
853source "arch/arm/mach-lh7a40x/Kconfig"
854
777f9beb
LB
855source "arch/arm/mach-loki/Kconfig"
856
40805949
KW
857source "arch/arm/mach-lpc32xx/Kconfig"
858
95b8f20f
RK
859source "arch/arm/mach-msm/Kconfig"
860
794d15b2
SS
861source "arch/arm/mach-mv78xx0/Kconfig"
862
95b8f20f 863source "arch/arm/plat-mxc/Kconfig"
1da177e4 864
95b8f20f 865source "arch/arm/mach-netx/Kconfig"
49cbe786 866
95b8f20f
RK
867source "arch/arm/mach-nomadik/Kconfig"
868source "arch/arm/plat-nomadik/Kconfig"
869
870source "arch/arm/mach-ns9xxx/Kconfig"
1da177e4 871
186f93ea 872source "arch/arm/mach-nuc93x/Kconfig"
1da177e4 873
d48af15e
TL
874source "arch/arm/plat-omap/Kconfig"
875
876source "arch/arm/mach-omap1/Kconfig"
1da177e4 877
1dbae815
TL
878source "arch/arm/mach-omap2/Kconfig"
879
9dd0b194 880source "arch/arm/mach-orion5x/Kconfig"
585cf175 881
95b8f20f
RK
882source "arch/arm/mach-pxa/Kconfig"
883source "arch/arm/plat-pxa/Kconfig"
585cf175 884
95b8f20f
RK
885source "arch/arm/mach-mmp/Kconfig"
886
887source "arch/arm/mach-realview/Kconfig"
888
889source "arch/arm/mach-sa1100/Kconfig"
edabd38e 890
cf383678 891source "arch/arm/plat-samsung/Kconfig"
a21765a7 892source "arch/arm/plat-s3c24xx/Kconfig"
c4ffccdd 893source "arch/arm/plat-s5p/Kconfig"
a21765a7 894
cee37e50 895source "arch/arm/plat-spear/Kconfig"
a21765a7
BD
896
897if ARCH_S3C2410
898source "arch/arm/mach-s3c2400/Kconfig"
1da177e4 899source "arch/arm/mach-s3c2410/Kconfig"
a21765a7 900source "arch/arm/mach-s3c2412/Kconfig"
f1290a49 901source "arch/arm/mach-s3c2416/Kconfig"
a21765a7 902source "arch/arm/mach-s3c2440/Kconfig"
e4d06e39 903source "arch/arm/mach-s3c2443/Kconfig"
a21765a7 904endif
1da177e4 905
a08ab637 906if ARCH_S3C64XX
431107ea 907source "arch/arm/mach-s3c64xx/Kconfig"
a08ab637
BD
908endif
909
c4ffccdd
KK
910source "arch/arm/mach-s5p6440/Kconfig"
911
550db7f1 912source "arch/arm/mach-s5p6442/Kconfig"
7bd0f2f5 913
5a7652f2 914source "arch/arm/mach-s5pc100/Kconfig"
5a7652f2 915
170f4e42
KK
916source "arch/arm/mach-s5pv210/Kconfig"
917
882d01f9 918source "arch/arm/mach-shmobile/Kconfig"
52c543f9 919
882d01f9 920source "arch/arm/plat-stmp3xxx/Kconfig"
9e73c84c 921
c5f80065
EG
922source "arch/arm/mach-tegra/Kconfig"
923
95b8f20f 924source "arch/arm/mach-u300/Kconfig"
1da177e4 925
95b8f20f 926source "arch/arm/mach-ux500/Kconfig"
1da177e4
LT
927
928source "arch/arm/mach-versatile/Kconfig"
929
ceade897
RK
930source "arch/arm/mach-vexpress/Kconfig"
931
7ec80ddf 932source "arch/arm/mach-w90x900/Kconfig"
933
1da177e4
LT
934# Definitions to make life easier
935config ARCH_ACORN
936 bool
937
7ae1f7ec
LB
938config PLAT_IOP
939 bool
469d3044 940 select GENERIC_CLOCKEVENTS
7ae1f7ec 941
69b02f6a
LB
942config PLAT_ORION
943 bool
944
bd5ce433
EM
945config PLAT_PXA
946 bool
947
f4b8b319
RK
948config PLAT_VERSATILE
949 bool
950
e3887714
RK
951config ARM_TIMER_SP804
952 bool
953
1da177e4
LT
954source arch/arm/mm/Kconfig
955
afe4b25e
LB
956config IWMMXT
957 bool "Enable iWMMXt support"
40305a58
EM
958 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
959 default y if PXA27x || PXA3xx || ARCH_MMP
afe4b25e
LB
960 help
961 Enable support for iWMMXt context switching at run time if
962 running on a CPU that supports it.
963
1da177e4
LT
964# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
965config XSCALE_PMU
966 bool
967 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
968 default y
969
0f4f0672 970config CPU_HAS_PMU
8954bb0d
WD
971 depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
972 (!ARCH_OMAP3 || OMAP3_EMU)
0f4f0672
JI
973 default y
974 bool
975
3b93e7b0
HC
976if !MMU
977source "arch/arm/Kconfig-nommu"
978endif
979
9cba3ccc
CM
980config ARM_ERRATA_411920
981 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
982 depends on CPU_V6 && !SMP
983 help
984 Invalidation of the Instruction Cache operation can
985 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
986 It does not affect the MPCore. This option enables the ARM Ltd.
987 recommended workaround.
988
7ce236fc
CM
989config ARM_ERRATA_430973
990 bool "ARM errata: Stale prediction on replaced interworking branch"
991 depends on CPU_V7
992 help
993 This option enables the workaround for the 430973 Cortex-A8
994 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
995 interworking branch is replaced with another code sequence at the
996 same virtual address, whether due to self-modifying code or virtual
997 to physical address re-mapping, Cortex-A8 does not recover from the
998 stale interworking branch prediction. This results in Cortex-A8
999 executing the new code sequence in the incorrect ARM or Thumb state.
1000 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1001 and also flushes the branch target cache at every context switch.
1002 Note that setting specific bits in the ACTLR register may not be
1003 available in non-secure mode.
1004
855c551f
CM
1005config ARM_ERRATA_458693
1006 bool "ARM errata: Processor deadlock when a false hazard is created"
1007 depends on CPU_V7
1008 help
1009 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1010 erratum. For very specific sequences of memory operations, it is
1011 possible for a hazard condition intended for a cache line to instead
1012 be incorrectly associated with a different cache line. This false
1013 hazard might then cause a processor deadlock. The workaround enables
1014 the L1 caching of the NEON accesses and disables the PLD instruction
1015 in the ACTLR register. Note that setting specific bits in the ACTLR
1016 register may not be available in non-secure mode.
1017
0516e464
CM
1018config ARM_ERRATA_460075
1019 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1020 depends on CPU_V7
1021 help
1022 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1023 erratum. Any asynchronous access to the L2 cache may encounter a
1024 situation in which recent store transactions to the L2 cache are lost
1025 and overwritten with stale memory contents from external memory. The
1026 workaround disables the write-allocate mode for the L2 cache via the
1027 ACTLR register. Note that setting specific bits in the ACTLR register
1028 may not be available in non-secure mode.
1029
9e65582a
SS
1030config PL310_ERRATA_588369
1031 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1032 depends on CACHE_L2X0 && ARCH_OMAP4
1033 help
1034 The PL310 L2 cache controller implements three types of Clean &
1035 Invalidate maintenance operations: by Physical Address
1036 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1037 They are architecturally defined to behave as the execution of a
1038 clean operation followed immediately by an invalidate operation,
1039 both performing to the same memory location. This functionality
1040 is not correctly implemented in PL310 as clean lines are not
1041 invalidated as a result of these operations. Note that this errata
1042 uses Texas Instrument's secure monitor api.
1da177e4
LT
1043endmenu
1044
1045source "arch/arm/common/Kconfig"
1046
1da177e4
LT
1047menu "Bus support"
1048
1049config ARM_AMBA
1050 bool
1051
1052config ISA
1053 bool
1da177e4
LT
1054 help
1055 Find out whether you have ISA slots on your motherboard. ISA is the
1056 name of a bus system, i.e. the way the CPU talks to the other stuff
1057 inside your box. Other bus systems are PCI, EISA, MicroChannel
1058 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1059 newer boards don't support it. If you have ISA, say Y, otherwise N.
1060
065909b9 1061# Select ISA DMA controller support
1da177e4
LT
1062config ISA_DMA
1063 bool
065909b9 1064 select ISA_DMA_API
1da177e4 1065
065909b9 1066# Select ISA DMA interface
5cae841b
AV
1067config ISA_DMA_API
1068 bool
5cae841b 1069
1da177e4 1070config PCI
5f32f7a0 1071 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX
1da177e4
LT
1072 help
1073 Find out whether you have a PCI motherboard. PCI is the name of a
1074 bus system, i.e. the way the CPU talks to the other stuff inside
1075 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1076 VESA. If you have PCI, say Y, otherwise N.
1077
52882173
AV
1078config PCI_DOMAINS
1079 bool
1080 depends on PCI
1081
36e23590
MW
1082config PCI_SYSCALL
1083 def_bool PCI
1084
1da177e4
LT
1085# Select the host bridge type
1086config PCI_HOST_VIA82C505
1087 bool
1088 depends on PCI && ARCH_SHARK
1089 default y
1090
a0113a99
MR
1091config PCI_HOST_ITE8152
1092 bool
1093 depends on PCI && MACH_ARMCORE
1094 default y
1095 select DMABOUNCE
1096
1da177e4
LT
1097source "drivers/pci/Kconfig"
1098
1099source "drivers/pcmcia/Kconfig"
1100
1101endmenu
1102
1103menu "Kernel Features"
1104
0567a0c0
KH
1105source "kernel/time/Kconfig"
1106
1da177e4
LT
1107config SMP
1108 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
42578c82 1109 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
59ac59f6 1110 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
1cea7326 1111 ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || ARCH_TEGRA)
bc28248e 1112 depends on GENERIC_CLOCKEVENTS
f6dd9fa5 1113 select USE_GENERIC_SMP_HELPERS
1cea7326
CC
1114 select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500 || \
1115 ARCH_VEXPRESS_CA9X4 || ARCH_TEGRA)
1da177e4
LT
1116 help
1117 This enables support for systems with more than one CPU. If you have
1118 a system with only one CPU, like most personal computers, say N. If
1119 you have a system with more than one CPU, say Y.
1120
1121 If you say N here, the kernel will run on single and multiprocessor
1122 machines, but will use only one CPU of a multiprocessor machine. If
1123 you say Y here, the kernel will run on many, but not all, single
1124 processor machines. On a single processor machine, the kernel will
1125 run faster if you say N here.
1126
03502faa 1127 See also <file:Documentation/i386/IO-APIC.txt>,
1da177e4
LT
1128 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1129 <http://www.linuxdoc.org/docs.html#howto>.
1130
1131 If you don't know what to do here, say N.
1132
a8cbcd92
RK
1133config HAVE_ARM_SCU
1134 bool
1135 depends on SMP
1136 help
1137 This option enables support for the ARM system coherency unit
1138
f32f4ce2
RK
1139config HAVE_ARM_TWD
1140 bool
1141 depends on SMP
1142 help
1143 This options enables support for the ARM timer and watchdog unit
1144
8d5796d2
LB
1145choice
1146 prompt "Memory split"
1147 default VMSPLIT_3G
1148 help
1149 Select the desired split between kernel and user memory.
1150
1151 If you are not absolutely sure what you are doing, leave this
1152 option alone!
1153
1154 config VMSPLIT_3G
1155 bool "3G/1G user/kernel split"
1156 config VMSPLIT_2G
1157 bool "2G/2G user/kernel split"
1158 config VMSPLIT_1G
1159 bool "1G/3G user/kernel split"
1160endchoice
1161
1162config PAGE_OFFSET
1163 hex
1164 default 0x40000000 if VMSPLIT_1G
1165 default 0x80000000 if VMSPLIT_2G
1166 default 0xC0000000
1167
1da177e4
LT
1168config NR_CPUS
1169 int "Maximum number of CPUs (2-32)"
1170 range 2 32
1171 depends on SMP
1172 default "4"
1173
a054a811
RK
1174config HOTPLUG_CPU
1175 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1176 depends on SMP && HOTPLUG && EXPERIMENTAL
1177 help
1178 Say Y here to experiment with turning CPUs off and on. CPUs
1179 can be controlled through /sys/devices/system/cpu.
1180
37ee16ae
RK
1181config LOCAL_TIMERS
1182 bool "Use local timer interrupts"
42578c82 1183 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
bde28b84 1184 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
1cea7326 1185 ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || ARCH_TEGRA)
37ee16ae 1186 default y
1cea7326
CC
1187 select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_VEXPRESS || ARCH_OMAP4 || \\
1188 ARCH_U8500 || ARCH_TEGRA
37ee16ae
RK
1189 help
1190 Enable support for local timers on SMP platforms, rather then the
1191 legacy IPI broadcast method. Local timers allows the system
1192 accounting to be spread across the timer interval, preventing a
1193 "thundering herd" at every timer tick.
1194
d45a398f 1195source kernel/Kconfig.preempt
1da177e4 1196
f8065813
RK
1197config HZ
1198 int
170f4e42 1199 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
bfe65704 1200 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
5248c657 1201 default AT91_TIMER_HZ if ARCH_AT91
5da3e714 1202 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
f8065813
RK
1203 default 100
1204
16c79651
CM
1205config THUMB2_KERNEL
1206 bool "Compile the kernel in Thumb-2 mode"
1207 depends on CPU_V7 && EXPERIMENTAL
1208 select AEABI
1209 select ARM_ASM_UNIFIED
1210 help
1211 By enabling this option, the kernel will be compiled in
1212 Thumb-2 mode. A compiler/assembler that understand the unified
1213 ARM-Thumb syntax is needed.
1214
1215 If unsure, say N.
1216
0becb088
CM
1217config ARM_ASM_UNIFIED
1218 bool
1219
704bdda0
NP
1220config AEABI
1221 bool "Use the ARM EABI to compile the kernel"
1222 help
1223 This option allows for the kernel to be compiled using the latest
1224 ARM ABI (aka EABI). This is only useful if you are using a user
1225 space environment that is also compiled with EABI.
1226
1227 Since there are major incompatibilities between the legacy ABI and
1228 EABI, especially with regard to structure member alignment, this
1229 option also changes the kernel syscall calling convention to
1230 disambiguate both ABIs and allow for backward compatibility support
1231 (selected with CONFIG_OABI_COMPAT).
1232
1233 To use this you need GCC version 4.0.0 or later.
1234
6c90c872 1235config OABI_COMPAT
a73a3ff1 1236 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
61c484d4 1237 depends on AEABI && EXPERIMENTAL
6c90c872
NP
1238 default y
1239 help
1240 This option preserves the old syscall interface along with the
1241 new (ARM EABI) one. It also provides a compatibility layer to
1242 intercept syscalls that have structure arguments which layout
1243 in memory differs between the legacy ABI and the new ARM EABI
1244 (only for non "thumb" binaries). This option adds a tiny
1245 overhead to all syscalls and produces a slightly larger kernel.
1246 If you know you'll be using only pure EABI user space then you
1247 can say N here. If this option is not selected and you attempt
1248 to execute a legacy ABI binary then the result will be
1249 UNPREDICTABLE (in fact it can be predicted that it won't work
1250 at all). If in doubt say Y.
1251
eb33575c 1252config ARCH_HAS_HOLES_MEMORYMODEL
e80d6a24 1253 bool
e80d6a24 1254
05944d74
RK
1255config ARCH_SPARSEMEM_ENABLE
1256 bool
1257
07a2f737
RK
1258config ARCH_SPARSEMEM_DEFAULT
1259 def_bool ARCH_SPARSEMEM_ENABLE
1260
05944d74 1261config ARCH_SELECT_MEMORY_MODEL
be370302 1262 def_bool ARCH_SPARSEMEM_ENABLE
c80d79d7 1263
053a96ca
NP
1264config HIGHMEM
1265 bool "High Memory Support (EXPERIMENTAL)"
1266 depends on MMU && EXPERIMENTAL
1267 help
1268 The address space of ARM processors is only 4 Gigabytes large
1269 and it has to accommodate user address space, kernel address
1270 space as well as some memory mapped IO. That means that, if you
1271 have a large amount of physical memory and/or IO, not all of the
1272 memory can be "permanently mapped" by the kernel. The physical
1273 memory that is not permanently mapped is called "high memory".
1274
1275 Depending on the selected kernel/user memory split, minimum
1276 vmalloc space and actual amount of RAM, you may not need this
1277 option which should result in a slightly faster kernel.
1278
1279 If unsure, say n.
1280
65cec8e3
RK
1281config HIGHPTE
1282 bool "Allocate 2nd-level pagetables from highmem"
1283 depends on HIGHMEM
1284 depends on !OUTER_CACHE
1285
1b8873a0
JI
1286config HW_PERF_EVENTS
1287 bool "Enable hardware performance counter support for perf events"
fe166148 1288 depends on PERF_EVENTS && CPU_HAS_PMU
1b8873a0
JI
1289 default y
1290 help
1291 Enable hardware performance counter support for perf events. If
1292 disabled, perf events will use software events only.
1293
354e6f72 1294config SPARSE_IRQ
c1ba6ba3 1295 def_bool n
354e6f72 1296 help
1297 This enables support for sparse irqs. This is useful in general
1298 as most CPUs have a fairly sparse array of IRQ vectors, which
1299 the irq_desc then maps directly on to. Systems with a high
1300 number of off-chip IRQs will want to treat this as
1301 experimental until they have been independently verified.
1302
3f22ab27
DH
1303source "mm/Kconfig"
1304
c1b2d970
MD
1305config FORCE_MAX_ZONEORDER
1306 int "Maximum zone order" if ARCH_SHMOBILE
1307 range 11 64 if ARCH_SHMOBILE
1308 default "9" if SA1111
1309 default "11"
1310 help
1311 The kernel memory allocator divides physically contiguous memory
1312 blocks into "zones", where each zone is a power of two number of
1313 pages. This option selects the largest power of two that the kernel
1314 keeps in the memory allocator. If you need to allocate very large
1315 blocks of physically contiguous memory, then you may need to
1316 increase this value.
1317
1318 This config option is actually maximum order plus one. For example,
1319 a value of 11 means that the largest free memory block is 2^10 pages.
1320
1da177e4
LT
1321config LEDS
1322 bool "Timer and CPU usage LEDs"
e055d5bf 1323 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
8c8fdbc9 1324 ARCH_EBSA285 || ARCH_INTEGRATOR || \
1da177e4
LT
1325 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1326 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
73a59c1c 1327 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
25329671 1328 ARCH_AT91 || ARCH_DAVINCI || \
ff3042fb 1329 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1da177e4
LT
1330 help
1331 If you say Y here, the LEDs on your machine will be used
1332 to provide useful information about your current system status.
1333
1334 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1335 be able to select which LEDs are active using the options below. If
1336 you are compiling a kernel for the EBSA-110 or the LART however, the
1337 red LED will simply flash regularly to indicate that the system is
1338 still functional. It is safe to say Y here if you have a CATS
1339 system, but the driver will do nothing.
1340
1341config LEDS_TIMER
1342 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
eebdf7d7
DB
1343 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1344 || MACH_OMAP_PERSEUS2
1da177e4 1345 depends on LEDS
0567a0c0 1346 depends on !GENERIC_CLOCKEVENTS
1da177e4
LT
1347 default y if ARCH_EBSA110
1348 help
1349 If you say Y here, one of the system LEDs (the green one on the
1350 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1351 will flash regularly to indicate that the system is still
1352 operational. This is mainly useful to kernel hackers who are
1353 debugging unstable kernels.
1354
1355 The LART uses the same LED for both Timer LED and CPU usage LED
1356 functions. You may choose to use both, but the Timer LED function
1357 will overrule the CPU usage LED.
1358
1359config LEDS_CPU
1360 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
eebdf7d7
DB
1361 !ARCH_OMAP) \
1362 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1363 || MACH_OMAP_PERSEUS2
1da177e4
LT
1364 depends on LEDS
1365 help
1366 If you say Y here, the red LED will be used to give a good real
1367 time indication of CPU usage, by lighting whenever the idle task
1368 is not currently executing.
1369
1370 The LART uses the same LED for both Timer LED and CPU usage LED
1371 functions. You may choose to use both, but the Timer LED function
1372 will overrule the CPU usage LED.
1373
1374config ALIGNMENT_TRAP
1375 bool
f12d0d7c 1376 depends on CPU_CP15_MMU
1da177e4 1377 default y if !ARCH_EBSA110
e119bfff 1378 select HAVE_PROC_CPU if PROC_FS
1da177e4 1379 help
84eb8d06 1380 ARM processors cannot fetch/store information which is not
1da177e4
LT
1381 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1382 address divisible by 4. On 32-bit ARM processors, these non-aligned
1383 fetch/store instructions will be emulated in software if you say
1384 here, which has a severe performance impact. This is necessary for
1385 correct operation of some network protocols. With an IP-only
1386 configuration it is safe to say N, otherwise say Y.
1387
39ec58f3
LB
1388config UACCESS_WITH_MEMCPY
1389 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1390 depends on MMU && EXPERIMENTAL
1391 default y if CPU_FEROCEON
1392 help
1393 Implement faster copy_to_user and clear_user methods for CPU
1394 cores where a 8-word STM instruction give significantly higher
1395 memory write throughput than a sequence of individual 32bit stores.
1396
1397 A possible side effect is a slight increase in scheduling latency
1398 between threads sharing the same address space if they invoke
1399 such copy operations with large buffers.
1400
1401 However, if the CPU data cache is using a write-allocate mode,
1402 this option is unlikely to provide any performance gain.
1403
c743f380
NP
1404config CC_STACKPROTECTOR
1405 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1406 help
1407 This option turns on the -fstack-protector GCC feature. This
1408 feature puts, at the beginning of functions, a canary value on
1409 the stack just before the return address, and validates
1410 the value just before actually returning. Stack based buffer
1411 overflows (that need to overwrite this return address) now also
1412 overwrite the canary, which gets detected and the attack is then
1413 neutralized via a kernel panic.
1414 This feature requires gcc version 4.2 or above.
1415
73a65b3f
UKK
1416config DEPRECATED_PARAM_STRUCT
1417 bool "Provide old way to pass kernel parameters"
1418 help
1419 This was deprecated in 2001 and announced to live on for 5 years.
1420 Some old boot loaders still use this way.
1421
1da177e4
LT
1422endmenu
1423
1424menu "Boot options"
1425
1426# Compressed boot loader in ROM. Yes, we really want to ask about
1427# TEXT and BSS so we preserve their values in the config files.
1428config ZBOOT_ROM_TEXT
1429 hex "Compressed ROM boot loader base address"
1430 default "0"
1431 help
1432 The physical address at which the ROM-able zImage is to be
1433 placed in the target. Platforms which normally make use of
1434 ROM-able zImage formats normally set this to a suitable
1435 value in their defconfig file.
1436
1437 If ZBOOT_ROM is not enabled, this has no effect.
1438
1439config ZBOOT_ROM_BSS
1440 hex "Compressed ROM boot loader BSS address"
1441 default "0"
1442 help
f8c440b2
DF
1443 The base address of an area of read/write memory in the target
1444 for the ROM-able zImage which must be available while the
1445 decompressor is running. It must be large enough to hold the
1446 entire decompressed kernel plus an additional 128 KiB.
1447 Platforms which normally make use of ROM-able zImage formats
1448 normally set this to a suitable value in their defconfig file.
1da177e4
LT
1449
1450 If ZBOOT_ROM is not enabled, this has no effect.
1451
1452config ZBOOT_ROM
1453 bool "Compressed boot loader in ROM/flash"
1454 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1455 help
1456 Say Y here if you intend to execute your compressed kernel image
1457 (zImage) directly from ROM or flash. If unsure, say N.
1458
1459config CMDLINE
1460 string "Default kernel command string"
1461 default ""
1462 help
1463 On some architectures (EBSA110 and CATS), there is currently no way
1464 for the boot loader to pass arguments to the kernel. For these
1465 architectures, you should supply some command-line options at build
1466 time by entering them here. As a minimum, you should specify the
1467 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1468
92d2040d
AH
1469config CMDLINE_FORCE
1470 bool "Always use the default kernel command string"
1471 depends on CMDLINE != ""
1472 help
1473 Always use the default kernel command string, even if the boot
1474 loader passes other arguments to the kernel.
1475 This is useful if you cannot or don't want to change the
1476 command-line options your boot loader passes to the kernel.
1477
1478 If unsure, say N.
1479
1da177e4
LT
1480config XIP_KERNEL
1481 bool "Kernel Execute-In-Place from ROM"
1482 depends on !ZBOOT_ROM
1483 help
1484 Execute-In-Place allows the kernel to run from non-volatile storage
1485 directly addressable by the CPU, such as NOR flash. This saves RAM
1486 space since the text section of the kernel is not loaded from flash
1487 to RAM. Read-write sections, such as the data section and stack,
1488 are still copied to RAM. The XIP kernel is not compressed since
1489 it has to run directly from flash, so it will take more space to
1490 store it. The flash address used to link the kernel object files,
1491 and for storing it, is configuration dependent. Therefore, if you
1492 say Y here, you must know the proper physical address where to
1493 store the kernel image depending on your own flash memory usage.
1494
1495 Also note that the make target becomes "make xipImage" rather than
1496 "make zImage" or "make Image". The final kernel binary to put in
1497 ROM memory will be arch/arm/boot/xipImage.
1498
1499 If unsure, say N.
1500
1501config XIP_PHYS_ADDR
1502 hex "XIP Kernel Physical Location"
1503 depends on XIP_KERNEL
1504 default "0x00080000"
1505 help
1506 This is the physical address in your flash memory the kernel will
1507 be linked for and stored to. This address is dependent on your
1508 own flash usage.
1509
c587e4a6
RP
1510config KEXEC
1511 bool "Kexec system call (EXPERIMENTAL)"
1512 depends on EXPERIMENTAL
1513 help
1514 kexec is a system call that implements the ability to shutdown your
1515 current kernel, and to start another kernel. It is like a reboot
01dd2fbf 1516 but it is independent of the system firmware. And like a reboot
c587e4a6
RP
1517 you can start any kernel with it, not just Linux.
1518
1519 It is an ongoing process to be certain the hardware in a machine
1520 is properly shutdown, so do not be surprised if this code does not
1521 initially work for you. It may help to enable device hotplugging
1522 support.
1523
4cd9d6f7
RP
1524config ATAGS_PROC
1525 bool "Export atags in procfs"
b98d7291
UL
1526 depends on KEXEC
1527 default y
4cd9d6f7
RP
1528 help
1529 Should the atags used to boot the kernel be exported in an "atags"
1530 file in procfs. Useful with kexec.
1531
e69edc79
EM
1532config AUTO_ZRELADDR
1533 bool "Auto calculation of the decompressed kernel image address"
1534 depends on !ZBOOT_ROM && !ARCH_U300
1535 help
1536 ZRELADDR is the physical address where the decompressed kernel
1537 image will be placed. If AUTO_ZRELADDR is selected, the address
1538 will be determined at run-time by masking the current IP with
1539 0xf8000000. This assumes the zImage being placed in the first 128MB
1540 from start of memory.
1541
1542config ZRELADDR
1543 hex "Physical address of the decompressed kernel image"
1544 depends on !AUTO_ZRELADDR
1545 default 0x00008000 if ARCH_BCMRING ||\
1546 ARCH_CNS3XXX ||\
1547 ARCH_DOVE ||\
1548 ARCH_EBSA110 ||\
1549 ARCH_FOOTBRIDGE ||\
1550 ARCH_INTEGRATOR ||\
1551 ARCH_IOP13XX ||\
1552 ARCH_IOP33X ||\
1553 ARCH_IXP2000 ||\
1554 ARCH_IXP23XX ||\
1555 ARCH_IXP4XX ||\
1556 ARCH_KIRKWOOD ||\
1557 ARCH_KS8695 ||\
1558 ARCH_LOKI ||\
1559 ARCH_MMP ||\
1560 ARCH_MV78XX0 ||\
1561 ARCH_NOMADIK ||\
1562 ARCH_NUC93X ||\
1563 ARCH_NS9XXX ||\
1564 ARCH_ORION5X ||\
1565 ARCH_SPEAR3XX ||\
1566 ARCH_SPEAR6XX ||\
1567 ARCH_U8500 ||\
1568 ARCH_VERSATILE ||\
1569 ARCH_W90X900
1570 default 0x08008000 if ARCH_MX1 ||\
1571 ARCH_SHARK
1572 default 0x10008000 if ARCH_MSM ||\
1573 ARCH_OMAP1 ||\
1574 ARCH_RPC
1575 default 0x20008000 if ARCH_S5P6440 ||\
1576 ARCH_S5P6442 ||\
1577 ARCH_S5PC100 ||\
1578 ARCH_S5PV210
1579 default 0x30008000 if ARCH_S3C2410 ||\
1580 ARCH_S3C2400 ||\
1581 ARCH_S3C2412 ||\
1582 ARCH_S3C2416 ||\
1583 ARCH_S3C2440 ||\
1584 ARCH_S3C2443
1585 default 0x40008000 if ARCH_STMP378X ||\
1586 ARCH_STMP37XX ||\
1587 ARCH_SH7372 ||\
1588 ARCH_SH7377
1589 default 0x50008000 if ARCH_S3C64XX ||\
1590 ARCH_SH7367
1591 default 0x60008000 if ARCH_VEXPRESS
1592 default 0x80008000 if ARCH_MX25 ||\
1593 ARCH_MX3 ||\
1594 ARCH_NETX ||\
1595 ARCH_OMAP2PLUS ||\
1596 ARCH_PNX4008
1597 default 0x90008000 if ARCH_MX5 ||\
1598 ARCH_MX91231
1599 default 0xa0008000 if ARCH_IOP32X ||\
1600 ARCH_PXA ||\
1601 MACH_MX27
1602 default 0xc0008000 if ARCH_LH7A40X ||\
1603 MACH_MX21
1604 default 0xf0008000 if ARCH_AAEC2000 ||\
1605 ARCH_L7200
1606 default 0xc0028000 if ARCH_CLPS711X
1607 default 0x70008000 if ARCH_AT91 && (ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1608 default 0x20008000 if ARCH_AT91 && !(ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1609 default 0xc0008000 if ARCH_DAVINCI && ARCH_DAVINCI_DA8XX
1610 default 0x80008000 if ARCH_DAVINCI && !ARCH_DAVINCI_DA8XX
1611 default 0x00008000 if ARCH_EP93XX && EP93XX_SDCE3_SYNC_PHYS_OFFSET
1612 default 0xc0008000 if ARCH_EP93XX && EP93XX_SDCE0_PHYS_OFFSET
1613 default 0xd0008000 if ARCH_EP93XX && EP93XX_SDCE1_PHYS_OFFSET
1614 default 0xe0008000 if ARCH_EP93XX && EP93XX_SDCE2_PHYS_OFFSET
1615 default 0xf0008000 if ARCH_EP93XX && EP93XX_SDCE3_ASYNC_PHYS_OFFSET
1616 default 0x00008000 if ARCH_GEMINI && GEMINI_MEM_SWAP
1617 default 0x10008000 if ARCH_GEMINI && !GEMINI_MEM_SWAP
1618 default 0x70008000 if ARCH_REALVIEW && REALVIEW_HIGH_PHYS_OFFSET
1619 default 0x00008000 if ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET
1620 default 0xc0208000 if ARCH_SA1100 && SA1111
1621 default 0xc0008000 if ARCH_SA1100 && !SA1111
1622 default 0x30108000 if ARCH_S3C2410 && PM_H1940
1623 default 0x28E08000 if ARCH_U300 && MACH_U300_SINGLE_RAM
1624 default 0x48008000 if ARCH_U300 && !MACH_U300_SINGLE_RAM
1625 help
1626 ZRELADDR is the physical address where the decompressed kernel
1627 image will be placed. ZRELADDR has to be specified when the
1628 assumption of AUTO_ZRELADDR is not valid, or when ZBOOT_ROM is
1629 selected.
1630
1da177e4
LT
1631endmenu
1632
ac9d7efc 1633menu "CPU Power Management"
1da177e4 1634
89c52ed4 1635if ARCH_HAS_CPUFREQ
1da177e4
LT
1636
1637source "drivers/cpufreq/Kconfig"
1638
1639config CPU_FREQ_SA1100
1640 bool
1da177e4
LT
1641
1642config CPU_FREQ_SA1110
1643 bool
1da177e4
LT
1644
1645config CPU_FREQ_INTEGRATOR
1646 tristate "CPUfreq driver for ARM Integrator CPUs"
1647 depends on ARCH_INTEGRATOR && CPU_FREQ
1648 default y
1649 help
1650 This enables the CPUfreq driver for ARM Integrator CPUs.
1651
1652 For details, take a look at <file:Documentation/cpu-freq>.
1653
1654 If in doubt, say Y.
1655
9e2697ff
RK
1656config CPU_FREQ_PXA
1657 bool
1658 depends on CPU_FREQ && ARCH_PXA && PXA25x
1659 default y
1660 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1661
b3748ddd
MB
1662config CPU_FREQ_S3C64XX
1663 bool "CPUfreq support for Samsung S3C64XX CPUs"
1664 depends on CPU_FREQ && CPU_S3C6410
1665
9d56c02a
BD
1666config CPU_FREQ_S3C
1667 bool
1668 help
1669 Internal configuration node for common cpufreq on Samsung SoC
1670
1671config CPU_FREQ_S3C24XX
1672 bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1673 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1674 select CPU_FREQ_S3C
1675 help
1676 This enables the CPUfreq driver for the Samsung S3C24XX family
1677 of CPUs.
1678
1679 For details, take a look at <file:Documentation/cpu-freq>.
1680
1681 If in doubt, say N.
1682
1683config CPU_FREQ_S3C24XX_PLL
1684 bool "Support CPUfreq changing of PLL frequency"
1685 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1686 help
1687 Compile in support for changing the PLL frequency from the
1688 S3C24XX series CPUfreq driver. The PLL takes time to settle
1689 after a frequency change, so by default it is not enabled.
1690
1691 This also means that the PLL tables for the selected CPU(s) will
1692 be built which may increase the size of the kernel image.
1693
1694config CPU_FREQ_S3C24XX_DEBUG
1695 bool "Debug CPUfreq Samsung driver core"
1696 depends on CPU_FREQ_S3C24XX
1697 help
1698 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1699
1700config CPU_FREQ_S3C24XX_IODEBUG
1701 bool "Debug CPUfreq Samsung driver IO timing"
1702 depends on CPU_FREQ_S3C24XX
1703 help
1704 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1705
e6d197a6
BD
1706config CPU_FREQ_S3C24XX_DEBUGFS
1707 bool "Export debugfs for CPUFreq"
1708 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1709 help
1710 Export status information via debugfs.
1711
1da177e4
LT
1712endif
1713
ac9d7efc
RK
1714source "drivers/cpuidle/Kconfig"
1715
1716endmenu
1717
1da177e4
LT
1718menu "Floating point emulation"
1719
1720comment "At least one emulation must be selected"
1721
1722config FPE_NWFPE
1723 bool "NWFPE math emulation"
8993a44c 1724 depends on !AEABI || OABI_COMPAT
1da177e4
LT
1725 ---help---
1726 Say Y to include the NWFPE floating point emulator in the kernel.
1727 This is necessary to run most binaries. Linux does not currently
1728 support floating point hardware so you need to say Y here even if
1729 your machine has an FPA or floating point co-processor podule.
1730
1731 You may say N here if you are going to load the Acorn FPEmulator
1732 early in the bootup.
1733
1734config FPE_NWFPE_XP
1735 bool "Support extended precision"
bedf142b 1736 depends on FPE_NWFPE
1da177e4
LT
1737 help
1738 Say Y to include 80-bit support in the kernel floating-point
1739 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1740 Note that gcc does not generate 80-bit operations by default,
1741 so in most cases this option only enlarges the size of the
1742 floating point emulator without any good reason.
1743
1744 You almost surely want to say N here.
1745
1746config FPE_FASTFPE
1747 bool "FastFPE math emulation (EXPERIMENTAL)"
8993a44c 1748 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1da177e4
LT
1749 ---help---
1750 Say Y here to include the FAST floating point emulator in the kernel.
1751 This is an experimental much faster emulator which now also has full
1752 precision for the mantissa. It does not support any exceptions.
1753 It is very simple, and approximately 3-6 times faster than NWFPE.
1754
1755 It should be sufficient for most programs. It may be not suitable
1756 for scientific calculations, but you have to check this for yourself.
1757 If you do not feel you need a faster FP emulation you should better
1758 choose NWFPE.
1759
1760config VFP
1761 bool "VFP-format floating point maths"
c00d4ffd 1762 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
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1763 help
1764 Say Y to include VFP support code in the kernel. This is needed
1765 if your hardware includes a VFP unit.
1766
1767 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1768 release notes and additional status information.
1769
1770 Say N if your target does not have VFP hardware.
1771
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1772config VFPv3
1773 bool
1774 depends on VFP
1775 default y if CPU_V7
1776
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1777config NEON
1778 bool "Advanced SIMD (NEON) Extension support"
1779 depends on VFPv3 && CPU_V7
1780 help
1781 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1782 Extension.
1783
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1784endmenu
1785
1786menu "Userspace binary formats"
1787
1788source "fs/Kconfig.binfmt"
1789
1790config ARTHUR
1791 tristate "RISC OS personality"
704bdda0 1792 depends on !AEABI
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1793 help
1794 Say Y here to include the kernel code necessary if you want to run
1795 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1796 experimental; if this sounds frightening, say N and sleep in peace.
1797 You can also say M here to compile this support as a module (which
1798 will be called arthur).
1799
1800endmenu
1801
1802menu "Power management options"
1803
eceab4ac 1804source "kernel/power/Kconfig"
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1806config ARCH_SUSPEND_POSSIBLE
1807 def_bool y
1808
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1809endmenu
1810
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1811source "net/Kconfig"
1812
ac25150f 1813source "drivers/Kconfig"
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1814
1815source "fs/Kconfig"
1816
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1817source "arch/arm/Kconfig.debug"
1818
1819source "security/Kconfig"
1820
1821source "crypto/Kconfig"
1822
1823source "lib/Kconfig"
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