ARM: 6073/1: oprofile: remove old files and update KConfig
[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
12b824fb 13 select RTC_LIB
75e7153a 14 select SYS_SUPPORTS_APM_EMULATION
24b44a66 15 select GENERIC_ATOMIC64 if (!CPU_32v6K)
fe166148 16 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
5cbad0eb 17 select HAVE_ARCH_KGDB
3f550096 18 select HAVE_KPROBES if (!XIP_KERNEL)
9edddaa2 19 select HAVE_KRETPROBES if (HAVE_KPROBES)
606576ce 20 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
1fe53268 21 select HAVE_GENERIC_DMA_COHERENT
e7db7b42
AT
22 select HAVE_KERNEL_GZIP
23 select HAVE_KERNEL_LZO
6e8699f7 24 select HAVE_KERNEL_LZMA
7ada189f
JI
25 select HAVE_PERF_EVENTS
26 select PERF_USE_VMALLOC
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
0a938b97
DB
41config GENERIC_GPIO
42 bool
0a938b97 43
746140c7
KH
44config GENERIC_TIME
45 bool
5cfc8ee0
JS
46 default y
47
48config ARCH_USES_GETTIMEOFFSET
49 bool
50 default n
746140c7 51
0567a0c0
KH
52config GENERIC_CLOCKEVENTS
53 bool
0567a0c0 54
a8655e83
CM
55config GENERIC_CLOCKEVENTS_BROADCAST
56 bool
57 depends on GENERIC_CLOCKEVENTS
58 default y if SMP && !LOCAL_TIMERS
59
bc581770
LW
60config HAVE_TCM
61 bool
62 select GENERIC_ALLOCATOR
63
e119bfff
RK
64config HAVE_PROC_CPU
65 bool
66
5ea81769
AV
67config NO_IOPORT
68 bool
5ea81769 69
1da177e4
LT
70config EISA
71 bool
72 ---help---
73 The Extended Industry Standard Architecture (EISA) bus was
74 developed as an open alternative to the IBM MicroChannel bus.
75
76 The EISA bus provided some of the features of the IBM MicroChannel
77 bus while maintaining backward compatibility with cards made for
78 the older ISA bus. The EISA bus saw limited use between 1988 and
79 1995 when it was made obsolete by the PCI bus.
80
81 Say Y here if you are building a kernel for an EISA-based machine.
82
83 Otherwise, say N.
84
85config SBUS
86 bool
87
88config MCA
89 bool
90 help
91 MicroChannel Architecture is found in some IBM PS/2 machines and
92 laptops. It is a bus system similar to PCI or ISA. See
93 <file:Documentation/mca.txt> (and especially the web page given
94 there) before attempting to build an MCA bus kernel.
95
4a2581a0
TG
96config GENERIC_HARDIRQS
97 bool
98 default y
99
f16fb1ec
RK
100config STACKTRACE_SUPPORT
101 bool
102 default y
103
f76e9154
NP
104config HAVE_LATENCYTOP_SUPPORT
105 bool
106 depends on !SMP
107 default y
108
f16fb1ec
RK
109config LOCKDEP_SUPPORT
110 bool
111 default y
112
7ad1bcb2
RK
113config TRACE_IRQFLAGS_SUPPORT
114 bool
115 default y
116
4a2581a0
TG
117config HARDIRQS_SW_RESEND
118 bool
119 default y
120
121config GENERIC_IRQ_PROBE
122 bool
123 default y
124
95c354fe
NP
125config GENERIC_LOCKBREAK
126 bool
127 default y
128 depends on SMP && PREEMPT
129
1da177e4
LT
130config RWSEM_GENERIC_SPINLOCK
131 bool
132 default y
133
134config RWSEM_XCHGADD_ALGORITHM
135 bool
136
f0d1b0b3
DH
137config ARCH_HAS_ILOG2_U32
138 bool
f0d1b0b3
DH
139
140config ARCH_HAS_ILOG2_U64
141 bool
f0d1b0b3 142
89c52ed4
BD
143config ARCH_HAS_CPUFREQ
144 bool
145 help
146 Internal node to signify that the ARCH has CPUFREQ support
147 and that the relevant menu configurations are displayed for
148 it.
149
b89c3b16
AM
150config GENERIC_HWEIGHT
151 bool
152 default y
153
1da177e4
LT
154config GENERIC_CALIBRATE_DELAY
155 bool
156 default y
157
a08b6b79
Z
158config ARCH_MAY_HAVE_PC_FDC
159 bool
160
5ac6da66
CL
161config ZONE_DMA
162 bool
5ac6da66 163
ccd7ab7f
FT
164config NEED_DMA_MAP_STATE
165 def_bool y
166
1da177e4
LT
167config GENERIC_ISA_DMA
168 bool
169
1da177e4
LT
170config FIQ
171 bool
172
034d2f5a
AV
173config ARCH_MTD_XIP
174 bool
175
60a752ef 176config GENERIC_HARDIRQS_NO__DO_IRQ
60a752ef
PZ
177 def_bool y
178
d6d502fa
KK
179config ARM_L1_CACHE_SHIFT_6
180 bool
181 help
182 Setting ARM L1 cache line size to 64 Bytes.
183
c760fc19
HC
184config VECTORS_BASE
185 hex
6afd6fae 186 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
c760fc19
HC
187 default DRAM_BASE if REMAP_VECTORS_TO_RAM
188 default 0x00000000
189 help
190 The base address of exception vectors.
191
1da177e4
LT
192source "init/Kconfig"
193
dc52ddc0
MH
194source "kernel/Kconfig.freezer"
195
1da177e4
LT
196menu "System Type"
197
3c427975
HC
198config MMU
199 bool "MMU-based Paged Memory Management Support"
200 default y
201 help
202 Select if you want MMU-based virtualised addressing space
203 support by paged memory management. If unsure, say 'Y'.
204
ccf50e23
RK
205#
206# The "ARM system type" choice list is ordered alphabetically by option
207# text. Please add new entries in the option alphabetic order.
208#
1da177e4
LT
209choice
210 prompt "ARM system type"
6a0e2430 211 default ARCH_VERSATILE
1da177e4 212
4af6fee1
DS
213config ARCH_AAEC2000
214 bool "Agilent AAEC-2000 based"
c750815e 215 select CPU_ARM920T
4af6fee1 216 select ARM_AMBA
9483a578 217 select HAVE_CLK
5cfc8ee0 218 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
219 help
220 This enables support for systems based on the Agilent AAEC-2000
221
222config ARCH_INTEGRATOR
223 bool "ARM Ltd. Integrator family"
224 select ARM_AMBA
89c52ed4 225 select ARCH_HAS_CPUFREQ
d72fbdf0 226 select COMMON_CLKDEV
c5a0adb5 227 select ICST
b9cedda2 228 select GENERIC_TIME
13edd86d 229 select GENERIC_CLOCKEVENTS
f4b8b319 230 select PLAT_VERSATILE
4af6fee1
DS
231 help
232 Support for ARM's Integrator platform.
233
234config ARCH_REALVIEW
235 bool "ARM Ltd. RealView family"
236 select ARM_AMBA
cf30fb4a 237 select COMMON_CLKDEV
c5a0adb5 238 select ICST
85802afe 239 select GENERIC_TIME
ae30ceac 240 select GENERIC_CLOCKEVENTS
eb7fffa3 241 select ARCH_WANT_OPTIONAL_GPIOLIB
f4b8b319 242 select PLAT_VERSATILE
e3887714 243 select ARM_TIMER_SP804
4af6fee1
DS
244 help
245 This enables support for ARM Ltd RealView boards.
246
247config ARCH_VERSATILE
248 bool "ARM Ltd. Versatile family"
249 select ARM_AMBA
250 select ARM_VIC
71a06da0 251 select COMMON_CLKDEV
c5a0adb5 252 select ICST
b49c87c2 253 select GENERIC_TIME
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
268 select GENERIC_TIME
269 select HAVE_CLK
270 select ICST
271 select PLAT_VERSATILE
272 help
273 This enables support for the ARM Ltd Versatile Express boards.
274
8fc5ffa0
AV
275config ARCH_AT91
276 bool "Atmel AT91"
0a938b97 277 select GENERIC_GPIO
f373e8c0 278 select ARCH_REQUIRE_GPIOLIB
93686ae8 279 select HAVE_CLK
5cfc8ee0 280 select ARCH_USES_GETTIMEOFFSET
4af6fee1 281 help
2b3b3516
AV
282 This enables support for systems based on the Atmel AT91RM9200,
283 AT91SAM9 and AT91CAP9 processors.
4af6fee1 284
ccf50e23
RK
285config ARCH_BCMRING
286 bool "Broadcom BCMRING"
287 depends on MMU
288 select CPU_V6
289 select ARM_AMBA
290 select COMMON_CLKDEV
291 select GENERIC_TIME
292 select GENERIC_CLOCKEVENTS
293 select ARCH_WANT_OPTIONAL_GPIOLIB
294 help
295 Support for Broadcom's BCMRing platform.
296
1da177e4 297config ARCH_CLPS711X
4af6fee1 298 bool "Cirrus Logic CLPS711x/EP721x-based"
c750815e 299 select CPU_ARM720T
5cfc8ee0 300 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
301 help
302 Support for Cirrus Logic 711x/721x based boards.
1da177e4 303
788c9700
RK
304config ARCH_GEMINI
305 bool "Cortina Systems Gemini"
306 select CPU_FA526
307 select GENERIC_GPIO
308 select ARCH_REQUIRE_GPIOLIB
5cfc8ee0 309 select ARCH_USES_GETTIMEOFFSET
788c9700
RK
310 help
311 Support for the Cortina Systems Gemini family SoCs
312
1da177e4
LT
313config ARCH_EBSA110
314 bool "EBSA-110"
c750815e 315 select CPU_SA110
f7e68bbf 316 select ISA
c5eb2a2b 317 select NO_IOPORT
5cfc8ee0 318 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
319 help
320 This is an evaluation board for the StrongARM processor available
f6c8965a 321 from Digital. It has limited hardware on-board, including an
1da177e4
LT
322 Ethernet interface, two PCMCIA sockets, two serial ports and a
323 parallel port.
324
e7736d47
LB
325config ARCH_EP93XX
326 bool "EP93xx-based"
c750815e 327 select CPU_ARM920T
e7736d47
LB
328 select ARM_AMBA
329 select ARM_VIC
4e9f9fd5 330 select GENERIC_GPIO
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"
349 select GENERIC_TIME
350 select GENERIC_CLOCKEVENTS
788c9700 351 select ARCH_REQUIRE_GPIOLIB
03e09cd8 352 select COMMON_CLKDEV
788c9700
RK
353 help
354 Support for Freescale MXC/iMX-based family of processors
355
7bd0f2f5 356config ARCH_STMP3XXX
357 bool "Freescale STMP3xxx"
358 select CPU_ARM926T
7bd0f2f5 359 select COMMON_CLKDEV
360 select ARCH_REQUIRE_GPIOLIB
361 select GENERIC_TIME
362 select GENERIC_CLOCKEVENTS
363 select GENERIC_GPIO
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
21edecd3 373 select GENERIC_TIME
f999b8bd 374 help
4af6fee1
DS
375 This enables support for systems based on the Hilscher NetX Soc
376
377config ARCH_H720X
378 bool "Hynix HMS720x-based"
c750815e 379 select CPU_ARM720T
4af6fee1 380 select ISA_DMA_API
5cfc8ee0 381 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
382 help
383 This enables support for systems based on the Hynix HMS720x
384
3b938be6
RK
385config ARCH_IOP13XX
386 bool "IOP13xx-based"
387 depends on MMU
c750815e 388 select CPU_XSC3
3b938be6
RK
389 select PLAT_IOP
390 select PCI
391 select ARCH_SUPPORTS_MSI
8d5796d2 392 select VMSPLIT_1G
3b938be6
RK
393 help
394 Support for Intel's IOP13XX (XScale) family of processors.
395
3f7e5815
LB
396config ARCH_IOP32X
397 bool "IOP32x-based"
a4f7e763 398 depends on MMU
c750815e 399 select CPU_XSCALE
7ae1f7ec 400 select PLAT_IOP
f7e68bbf 401 select PCI
63f385cd 402 select GENERIC_GPIO
bb2b180c 403 select ARCH_REQUIRE_GPIOLIB
f999b8bd 404 help
3f7e5815
LB
405 Support for Intel's 80219 and IOP32X (XScale) family of
406 processors.
407
408config ARCH_IOP33X
409 bool "IOP33x-based"
410 depends on MMU
c750815e 411 select CPU_XSCALE
7ae1f7ec 412 select PLAT_IOP
3f7e5815 413 select PCI
63f385cd 414 select GENERIC_GPIO
bb2b180c 415 select ARCH_REQUIRE_GPIOLIB
3f7e5815
LB
416 help
417 Support for Intel's IOP33X (XScale) family of processors.
1da177e4 418
3b938be6
RK
419config ARCH_IXP23XX
420 bool "IXP23XX-based"
a4f7e763 421 depends on MMU
c750815e 422 select CPU_XSC3
3b938be6 423 select PCI
5cfc8ee0 424 select ARCH_USES_GETTIMEOFFSET
f999b8bd 425 help
3b938be6 426 Support for Intel's IXP23xx (XScale) family of processors.
1da177e4
LT
427
428config ARCH_IXP2000
429 bool "IXP2400/2800-based"
a4f7e763 430 depends on MMU
c750815e 431 select CPU_XSCALE
f7e68bbf 432 select PCI
5cfc8ee0 433 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
434 help
435 Support for Intel's IXP2400/2800 (XScale) family of processors.
1da177e4 436
3b938be6
RK
437config ARCH_IXP4XX
438 bool "IXP4xx-based"
a4f7e763 439 depends on MMU
c750815e 440 select CPU_XSCALE
8858e9af 441 select GENERIC_GPIO
3b938be6
RK
442 select GENERIC_TIME
443 select GENERIC_CLOCKEVENTS
485bdde7 444 select DMABOUNCE if PCI
c4713074 445 help
3b938be6 446 Support for Intel's IXP4XX (XScale) family of processors.
c4713074 447
1da177e4
LT
448config ARCH_L7200
449 bool "LinkUp-L7200"
c750815e 450 select CPU_ARM720T
1da177e4 451 select FIQ
5cfc8ee0 452 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
453 help
454 Say Y here if you intend to run this kernel on a LinkUp Systems
455 L7200 Software Development Board which uses an ARM720T processor.
456 Information on this board can be obtained at:
457
458 <http://www.linkupsys.com/>
459
460 If you have any questions or comments about the Linux kernel port
461 to this board, send e-mail to <sjhill@cotw.com>.
462
edabd38e
SB
463config ARCH_DOVE
464 bool "Marvell Dove"
465 select PCI
466 select GENERIC_GPIO
467 select ARCH_REQUIRE_GPIOLIB
468 select GENERIC_TIME
469 select GENERIC_CLOCKEVENTS
470 select PLAT_ORION
471 help
472 Support for the Marvell Dove SoC 88AP510
473
651c74c7
SB
474config ARCH_KIRKWOOD
475 bool "Marvell Kirkwood"
c750815e 476 select CPU_FEROCEON
651c74c7 477 select PCI
4c213430 478 select GENERIC_GPIO
a8865655 479 select ARCH_REQUIRE_GPIOLIB
651c74c7
SB
480 select GENERIC_TIME
481 select GENERIC_CLOCKEVENTS
482 select PLAT_ORION
483 help
484 Support for the following Marvell Kirkwood series SoCs:
485 88F6180, 88F6192 and 88F6281.
486
777f9beb
LB
487config ARCH_LOKI
488 bool "Marvell Loki (88RC8480)"
c750815e 489 select CPU_FEROCEON
777f9beb
LB
490 select GENERIC_TIME
491 select GENERIC_CLOCKEVENTS
492 select PLAT_ORION
493 help
494 Support for the Marvell Loki (88RC8480) SoC.
495
794d15b2
SS
496config ARCH_MV78XX0
497 bool "Marvell MV78xx0"
c750815e 498 select CPU_FEROCEON
794d15b2 499 select PCI
b95a13d7 500 select GENERIC_GPIO
a8865655 501 select ARCH_REQUIRE_GPIOLIB
794d15b2
SS
502 select GENERIC_TIME
503 select GENERIC_CLOCKEVENTS
504 select PLAT_ORION
505 help
506 Support for the following Marvell MV78xx0 series SoCs:
507 MV781x0, MV782x0.
508
9dd0b194 509config ARCH_ORION5X
585cf175
TP
510 bool "Marvell Orion"
511 depends on MMU
c750815e 512 select CPU_FEROCEON
038ee083 513 select PCI
01af72e4 514 select GENERIC_GPIO
a8865655 515 select ARCH_REQUIRE_GPIOLIB
51cbff1d
TP
516 select GENERIC_TIME
517 select GENERIC_CLOCKEVENTS
69b02f6a 518 select PLAT_ORION
585cf175 519 help
9dd0b194 520 Support for the following Marvell Orion 5x series SoCs:
d2b2a6bb 521 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
d323ade1 522 Orion-2 (5281), Orion-1-90 (6183).
585cf175 523
788c9700 524config ARCH_MMP
2f7e8fae 525 bool "Marvell PXA168/910/MMP2"
788c9700
RK
526 depends on MMU
527 select GENERIC_GPIO
528 select ARCH_REQUIRE_GPIOLIB
788c9700
RK
529 select COMMON_CLKDEV
530 select GENERIC_TIME
531 select GENERIC_CLOCKEVENTS
532 select TICK_ONESHOT
533 select PLAT_PXA
534 help
2f7e8fae 535 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
788c9700
RK
536
537config ARCH_KS8695
538 bool "Micrel/Kendin KS8695"
539 select CPU_ARM922T
540 select GENERIC_GPIO
541 select ARCH_REQUIRE_GPIOLIB
5cfc8ee0 542 select ARCH_USES_GETTIMEOFFSET
788c9700
RK
543 help
544 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
545 System-on-Chip devices.
546
547config ARCH_NS9XXX
548 bool "NetSilicon NS9xxx"
549 select CPU_ARM926T
550 select GENERIC_GPIO
551 select GENERIC_TIME
552 select GENERIC_CLOCKEVENTS
553 select HAVE_CLK
554 help
555 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
556 System.
557
558 <http://www.digi.com/products/microprocessors/index.jsp>
559
560config ARCH_W90X900
561 bool "Nuvoton W90X900 CPU"
562 select CPU_ARM926T
c52d3d68 563 select ARCH_REQUIRE_GPIOLIB
564 select GENERIC_GPIO
0e4a34bb 565 select COMMON_CLKDEV
58b5369e 566 select GENERIC_TIME
567 select GENERIC_CLOCKEVENTS
788c9700 568 help
a8bc4ead 569 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
570 At present, the w90x900 has been renamed nuc900, regarding
571 the ARM series product line, you can login the following
572 link address to know more.
573
574 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
575 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
788c9700 576
a62e9030 577config ARCH_NUC93X
578 bool "Nuvoton NUC93X CPU"
579 select CPU_ARM926T
a62e9030 580 select COMMON_CLKDEV
581 help
582 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
583 low-power and high performance MPEG-4/JPEG multimedia controller chip.
584
4af6fee1
DS
585config ARCH_PNX4008
586 bool "Philips Nexperia PNX4008 Mobile"
c750815e 587 select CPU_ARM926T
6985a5ad 588 select COMMON_CLKDEV
5cfc8ee0 589 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
590 help
591 This enables support for Philips PNX4008 mobile platform.
592
1da177e4 593config ARCH_PXA
2c8086a5 594 bool "PXA2xx/PXA3xx-based"
a4f7e763 595 depends on MMU
034d2f5a 596 select ARCH_MTD_XIP
89c52ed4 597 select ARCH_HAS_CPUFREQ
0a938b97 598 select GENERIC_GPIO
8c3abc7d 599 select COMMON_CLKDEV
7444a72e 600 select ARCH_REQUIRE_GPIOLIB
45cf5eef 601 select GENERIC_TIME
981d0f39 602 select GENERIC_CLOCKEVENTS
a88264c2 603 select TICK_ONESHOT
bd5ce433 604 select PLAT_PXA
f999b8bd 605 help
2c8086a5 606 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
1da177e4 607
788c9700
RK
608config ARCH_MSM
609 bool "Qualcomm MSM"
610 select CPU_V6
49cbe786
EM
611 select GENERIC_TIME
612 select GENERIC_CLOCKEVENTS
49cbe786 613 help
788c9700
RK
614 Support for Qualcomm MSM7K based systems. This runs on the ARM11
615 apps processor of the MSM7K and depends on a shared memory
616 interface to the ARM9 modem processor which runs the baseband stack
617 and controls some vital subsystems (clock and power control, etc).
49cbe786 618
c793c1b0
MD
619config ARCH_SHMOBILE
620 bool "Renesas SH-Mobile"
621 help
622 Support for Renesas's SH-Mobile ARM platforms
623
1da177e4
LT
624config ARCH_RPC
625 bool "RiscPC"
626 select ARCH_ACORN
627 select FIQ
628 select TIMER_ACORN
a08b6b79 629 select ARCH_MAY_HAVE_PC_FDC
341eb781 630 select HAVE_PATA_PLATFORM
065909b9 631 select ISA_DMA_API
5ea81769 632 select NO_IOPORT
07f841b7 633 select ARCH_SPARSEMEM_ENABLE
5cfc8ee0 634 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
635 help
636 On the Acorn Risc-PC, Linux can support the internal IDE disk and
637 CD-ROM interface, serial and parallel port, and the floppy drive.
638
639config ARCH_SA1100
640 bool "SA1100-based"
c750815e 641 select CPU_SA1100
f7e68bbf 642 select ISA
05944d74 643 select ARCH_SPARSEMEM_ENABLE
034d2f5a 644 select ARCH_MTD_XIP
89c52ed4 645 select ARCH_HAS_CPUFREQ
1937f5b9 646 select CPU_FREQ
0a938b97 647 select GENERIC_GPIO
d142b6e7 648 select GENERIC_TIME
3e238be2 649 select GENERIC_CLOCKEVENTS
9483a578 650 select HAVE_CLK
3e238be2 651 select TICK_ONESHOT
7444a72e 652 select ARCH_REQUIRE_GPIOLIB
f999b8bd
MM
653 help
654 Support for StrongARM 11x0 based boards.
1da177e4
LT
655
656config ARCH_S3C2410
e4d06e39 657 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
0a938b97 658 select GENERIC_GPIO
9d56c02a 659 select ARCH_HAS_CPUFREQ
9483a578 660 select HAVE_CLK
5cfc8ee0 661 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
662 help
663 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
664 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
f6c8965a 665 the Samsung SMDK2410 development board (and derivatives).
1da177e4 666
a08ab637
BD
667config ARCH_S3C64XX
668 bool "Samsung S3C64XX"
89f1fa08 669 select PLAT_SAMSUNG
89f0ce72 670 select CPU_V6
a08ab637 671 select GENERIC_GPIO
89f0ce72 672 select ARM_VIC
a08ab637 673 select HAVE_CLK
89f0ce72 674 select NO_IOPORT
5cfc8ee0 675 select ARCH_USES_GETTIMEOFFSET
89c52ed4 676 select ARCH_HAS_CPUFREQ
89f0ce72
BD
677 select ARCH_REQUIRE_GPIOLIB
678 select SAMSUNG_CLKSRC
679 select SAMSUNG_IRQ_VIC_TIMER
680 select SAMSUNG_IRQ_UART
681 select S3C_GPIO_TRACK
682 select S3C_GPIO_PULL_UPDOWN
683 select S3C_GPIO_CFG_S3C24XX
684 select S3C_GPIO_CFG_S3C64XX
685 select S3C_DEV_NAND
686 select USB_ARCH_HAS_OHCI
687 select SAMSUNG_GPIOLIB_4BIT
a08ab637
BD
688 help
689 Samsung S3C64XX series based systems
690
c4ffccdd
KK
691config ARCH_S5P6440
692 bool "Samsung S5P6440"
693 select CPU_V6
694 select GENERIC_GPIO
695 select HAVE_CLK
696 help
697 Samsung S5P6440 CPU based systems
698
550db7f1
KK
699config ARCH_S5P6442
700 bool "Samsung S5P6442"
701 select CPU_V6
702 select GENERIC_GPIO
703 select HAVE_CLK
704 help
705 Samsung S5P6442 CPU based systems
706
5a7652f2
BM
707config ARCH_S5PC1XX
708 bool "Samsung S5PC1XX"
709 select GENERIC_GPIO
710 select HAVE_CLK
711 select CPU_V7
d6d502fa 712 select ARM_L1_CACHE_SHIFT_6
5a7652f2
BM
713 help
714 Samsung S5PC1XX series based systems
715
170f4e42
KK
716config ARCH_S5PV210
717 bool "Samsung S5PV210/S5PC110"
718 select CPU_V7
719 select GENERIC_GPIO
720 select HAVE_CLK
721 select ARM_L1_CACHE_SHIFT_6
722 help
723 Samsung S5PV210/S5PC110 series based systems
724
1da177e4
LT
725config ARCH_SHARK
726 bool "Shark"
c750815e 727 select CPU_SA110
f7e68bbf
RK
728 select ISA
729 select ISA_DMA
3bca103a 730 select ZONE_DMA
f7e68bbf 731 select PCI
5cfc8ee0 732 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
733 help
734 Support for the StrongARM based Digital DNARD machine, also known
735 as "Shark" (<http://www.shark-linux.de/shark.html>).
1da177e4
LT
736
737config ARCH_LH7A40X
738 bool "Sharp LH7A40X"
c750815e 739 select CPU_ARM922T
4ba3f7c5
RK
740 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
741 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
5cfc8ee0 742 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
743 help
744 Say Y here for systems based on one of the Sharp LH7A40X
745 System on a Chip processors. These CPUs include an ARM922T
746 core with a wide array of integrated devices for
747 hand-held and low-power applications.
748
d98aac75
LW
749config ARCH_U300
750 bool "ST-Ericsson U300 Series"
751 depends on MMU
752 select CPU_ARM926T
bc581770 753 select HAVE_TCM
d98aac75
LW
754 select ARM_AMBA
755 select ARM_VIC
756 select GENERIC_TIME
757 select GENERIC_CLOCKEVENTS
d98aac75
LW
758 select COMMON_CLKDEV
759 select GENERIC_GPIO
760 help
761 Support for ST-Ericsson U300 series mobile platforms.
762
ccf50e23
RK
763config ARCH_U8500
764 bool "ST-Ericsson U8500 Series"
765 select CPU_V7
766 select ARM_AMBA
767 select GENERIC_TIME
768 select GENERIC_CLOCKEVENTS
769 select COMMON_CLKDEV
94bdc0e2 770 select ARCH_REQUIRE_GPIOLIB
ccf50e23
RK
771 help
772 Support for ST-Ericsson's Ux500 architecture
773
774config ARCH_NOMADIK
775 bool "STMicroelectronics Nomadik"
776 select ARM_AMBA
777 select ARM_VIC
778 select CPU_ARM926T
ccf50e23
RK
779 select COMMON_CLKDEV
780 select GENERIC_TIME
781 select GENERIC_CLOCKEVENTS
782 select GENERIC_GPIO
783 select ARCH_REQUIRE_GPIOLIB
784 help
785 Support for the Nomadik platform by ST-Ericsson
786
7c6337e2
KH
787config ARCH_DAVINCI
788 bool "TI DaVinci"
c750815e 789 select CPU_ARM926T
7c6337e2
KH
790 select GENERIC_TIME
791 select GENERIC_CLOCKEVENTS
3d9edf09 792 select GENERIC_GPIO
dce1115b 793 select ARCH_REQUIRE_GPIOLIB
3bca103a 794 select ZONE_DMA
9232fcc9 795 select HAVE_IDE
c5b736d0 796 select COMMON_CLKDEV
20e9969b 797 select GENERIC_ALLOCATOR
ae88e05a 798 select ARCH_HAS_HOLES_MEMORYMODEL
7c6337e2
KH
799 help
800 Support for TI's DaVinci platform.
801
3b938be6
RK
802config ARCH_OMAP
803 bool "TI OMAP"
804 select GENERIC_GPIO
9483a578 805 select HAVE_CLK
7444a72e 806 select ARCH_REQUIRE_GPIOLIB
89c52ed4 807 select ARCH_HAS_CPUFREQ
3b938be6 808 select GENERIC_TIME
06cad098 809 select GENERIC_CLOCKEVENTS
9af915da 810 select ARCH_HAS_HOLES_MEMORYMODEL
3b938be6
RK
811 help
812 Support for TI's OMAP platform (OMAP1 and OMAP2).
813
cee37e50 814config PLAT_SPEAR
815 bool "ST SPEAr"
816 select ARM_AMBA
817 select ARCH_REQUIRE_GPIOLIB
818 select COMMON_CLKDEV
819 select GENERIC_CLOCKEVENTS
820 select GENERIC_GPIO
821 select GENERIC_TIME
822 select HAVE_CLK
823 help
824 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
825
1da177e4
LT
826endchoice
827
ccf50e23
RK
828#
829# This is sorted alphabetically by mach-* pathname. However, plat-*
830# Kconfigs may be included either alphabetically (according to the
831# plat- suffix) or along side the corresponding mach-* source.
832#
95b8f20f
RK
833source "arch/arm/mach-aaec2000/Kconfig"
834
835source "arch/arm/mach-at91/Kconfig"
836
837source "arch/arm/mach-bcmring/Kconfig"
838
1da177e4
LT
839source "arch/arm/mach-clps711x/Kconfig"
840
95b8f20f
RK
841source "arch/arm/mach-davinci/Kconfig"
842
843source "arch/arm/mach-dove/Kconfig"
844
e7736d47
LB
845source "arch/arm/mach-ep93xx/Kconfig"
846
1da177e4
LT
847source "arch/arm/mach-footbridge/Kconfig"
848
59d3a193
PZ
849source "arch/arm/mach-gemini/Kconfig"
850
95b8f20f
RK
851source "arch/arm/mach-h720x/Kconfig"
852
1da177e4
LT
853source "arch/arm/mach-integrator/Kconfig"
854
3f7e5815
LB
855source "arch/arm/mach-iop32x/Kconfig"
856
857source "arch/arm/mach-iop33x/Kconfig"
1da177e4 858
285f5fa7
DW
859source "arch/arm/mach-iop13xx/Kconfig"
860
1da177e4
LT
861source "arch/arm/mach-ixp4xx/Kconfig"
862
863source "arch/arm/mach-ixp2000/Kconfig"
864
c4713074
LB
865source "arch/arm/mach-ixp23xx/Kconfig"
866
95b8f20f
RK
867source "arch/arm/mach-kirkwood/Kconfig"
868
869source "arch/arm/mach-ks8695/Kconfig"
870
871source "arch/arm/mach-lh7a40x/Kconfig"
872
777f9beb
LB
873source "arch/arm/mach-loki/Kconfig"
874
95b8f20f
RK
875source "arch/arm/mach-msm/Kconfig"
876
794d15b2
SS
877source "arch/arm/mach-mv78xx0/Kconfig"
878
95b8f20f 879source "arch/arm/plat-mxc/Kconfig"
1da177e4 880
95b8f20f 881source "arch/arm/mach-netx/Kconfig"
49cbe786 882
95b8f20f
RK
883source "arch/arm/mach-nomadik/Kconfig"
884source "arch/arm/plat-nomadik/Kconfig"
885
886source "arch/arm/mach-ns9xxx/Kconfig"
1da177e4 887
186f93ea 888source "arch/arm/mach-nuc93x/Kconfig"
1da177e4 889
d48af15e
TL
890source "arch/arm/plat-omap/Kconfig"
891
892source "arch/arm/mach-omap1/Kconfig"
1da177e4 893
1dbae815
TL
894source "arch/arm/mach-omap2/Kconfig"
895
9dd0b194 896source "arch/arm/mach-orion5x/Kconfig"
585cf175 897
95b8f20f
RK
898source "arch/arm/mach-pxa/Kconfig"
899source "arch/arm/plat-pxa/Kconfig"
585cf175 900
95b8f20f
RK
901source "arch/arm/mach-mmp/Kconfig"
902
903source "arch/arm/mach-realview/Kconfig"
904
905source "arch/arm/mach-sa1100/Kconfig"
edabd38e 906
cf383678 907source "arch/arm/plat-samsung/Kconfig"
a21765a7 908source "arch/arm/plat-s3c24xx/Kconfig"
c4ffccdd 909source "arch/arm/plat-s5p/Kconfig"
5a7652f2 910source "arch/arm/plat-s5pc1xx/Kconfig"
cee37e50 911source "arch/arm/plat-spear/Kconfig"
a21765a7
BD
912
913if ARCH_S3C2410
914source "arch/arm/mach-s3c2400/Kconfig"
1da177e4 915source "arch/arm/mach-s3c2410/Kconfig"
a21765a7
BD
916source "arch/arm/mach-s3c2412/Kconfig"
917source "arch/arm/mach-s3c2440/Kconfig"
e4d06e39 918source "arch/arm/mach-s3c2443/Kconfig"
a21765a7 919endif
1da177e4 920
a08ab637 921if ARCH_S3C64XX
431107ea 922source "arch/arm/mach-s3c64xx/Kconfig"
a08ab637
BD
923endif
924
c4ffccdd
KK
925source "arch/arm/mach-s5p6440/Kconfig"
926
550db7f1 927source "arch/arm/mach-s5p6442/Kconfig"
7bd0f2f5 928
5a7652f2
BM
929if ARCH_S5PC1XX
930source "arch/arm/mach-s5pc100/Kconfig"
931endif
932
170f4e42
KK
933source "arch/arm/mach-s5pv210/Kconfig"
934
882d01f9 935source "arch/arm/mach-shmobile/Kconfig"
52c543f9 936
882d01f9 937source "arch/arm/plat-stmp3xxx/Kconfig"
9e73c84c 938
95b8f20f 939source "arch/arm/mach-u300/Kconfig"
1da177e4 940
95b8f20f 941source "arch/arm/mach-ux500/Kconfig"
1da177e4
LT
942
943source "arch/arm/mach-versatile/Kconfig"
944
ceade897
RK
945source "arch/arm/mach-vexpress/Kconfig"
946
7ec80ddf 947source "arch/arm/mach-w90x900/Kconfig"
948
1da177e4
LT
949# Definitions to make life easier
950config ARCH_ACORN
951 bool
952
7ae1f7ec
LB
953config PLAT_IOP
954 bool
469d3044 955 select GENERIC_CLOCKEVENTS
980f2296 956 select GENERIC_TIME
7ae1f7ec 957
69b02f6a
LB
958config PLAT_ORION
959 bool
960
bd5ce433
EM
961config PLAT_PXA
962 bool
963
f4b8b319
RK
964config PLAT_VERSATILE
965 bool
966
e3887714
RK
967config ARM_TIMER_SP804
968 bool
969
1da177e4
LT
970source arch/arm/mm/Kconfig
971
afe4b25e
LB
972config IWMMXT
973 bool "Enable iWMMXt support"
40305a58
EM
974 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
975 default y if PXA27x || PXA3xx || ARCH_MMP
afe4b25e
LB
976 help
977 Enable support for iWMMXt context switching at run time if
978 running on a CPU that supports it.
979
1da177e4
LT
980# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
981config XSCALE_PMU
982 bool
983 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
984 default y
985
0f4f0672
JI
986config CPU_HAS_PMU
987 depends on CPU_V6 || CPU_V7 || XSCALE_PMU
988 default y
989 bool
990
3b93e7b0
HC
991if !MMU
992source "arch/arm/Kconfig-nommu"
993endif
994
9cba3ccc
CM
995config ARM_ERRATA_411920
996 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
997 depends on CPU_V6 && !SMP
998 help
999 Invalidation of the Instruction Cache operation can
1000 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1001 It does not affect the MPCore. This option enables the ARM Ltd.
1002 recommended workaround.
1003
7ce236fc
CM
1004config ARM_ERRATA_430973
1005 bool "ARM errata: Stale prediction on replaced interworking branch"
1006 depends on CPU_V7
1007 help
1008 This option enables the workaround for the 430973 Cortex-A8
1009 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1010 interworking branch is replaced with another code sequence at the
1011 same virtual address, whether due to self-modifying code or virtual
1012 to physical address re-mapping, Cortex-A8 does not recover from the
1013 stale interworking branch prediction. This results in Cortex-A8
1014 executing the new code sequence in the incorrect ARM or Thumb state.
1015 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1016 and also flushes the branch target cache at every context switch.
1017 Note that setting specific bits in the ACTLR register may not be
1018 available in non-secure mode.
1019
855c551f
CM
1020config ARM_ERRATA_458693
1021 bool "ARM errata: Processor deadlock when a false hazard is created"
1022 depends on CPU_V7
1023 help
1024 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1025 erratum. For very specific sequences of memory operations, it is
1026 possible for a hazard condition intended for a cache line to instead
1027 be incorrectly associated with a different cache line. This false
1028 hazard might then cause a processor deadlock. The workaround enables
1029 the L1 caching of the NEON accesses and disables the PLD instruction
1030 in the ACTLR register. Note that setting specific bits in the ACTLR
1031 register may not be available in non-secure mode.
1032
0516e464
CM
1033config ARM_ERRATA_460075
1034 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1035 depends on CPU_V7
1036 help
1037 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1038 erratum. Any asynchronous access to the L2 cache may encounter a
1039 situation in which recent store transactions to the L2 cache are lost
1040 and overwritten with stale memory contents from external memory. The
1041 workaround disables the write-allocate mode for the L2 cache via the
1042 ACTLR register. Note that setting specific bits in the ACTLR register
1043 may not be available in non-secure mode.
1044
9e65582a
SS
1045config PL310_ERRATA_588369
1046 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1047 depends on CACHE_L2X0 && ARCH_OMAP4
1048 help
1049 The PL310 L2 cache controller implements three types of Clean &
1050 Invalidate maintenance operations: by Physical Address
1051 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1052 They are architecturally defined to behave as the execution of a
1053 clean operation followed immediately by an invalidate operation,
1054 both performing to the same memory location. This functionality
1055 is not correctly implemented in PL310 as clean lines are not
1056 invalidated as a result of these operations. Note that this errata
1057 uses Texas Instrument's secure monitor api.
1da177e4
LT
1058endmenu
1059
1060source "arch/arm/common/Kconfig"
1061
1062config FORCE_MAX_ZONEORDER
1063 int
1064 depends on SA1111
1065 default "9"
1066
1067menu "Bus support"
1068
1069config ARM_AMBA
1070 bool
1071
1072config ISA
1073 bool
1da177e4
LT
1074 help
1075 Find out whether you have ISA slots on your motherboard. ISA is the
1076 name of a bus system, i.e. the way the CPU talks to the other stuff
1077 inside your box. Other bus systems are PCI, EISA, MicroChannel
1078 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1079 newer boards don't support it. If you have ISA, say Y, otherwise N.
1080
065909b9 1081# Select ISA DMA controller support
1da177e4
LT
1082config ISA_DMA
1083 bool
065909b9 1084 select ISA_DMA_API
1da177e4 1085
065909b9 1086# Select ISA DMA interface
5cae841b
AV
1087config ISA_DMA_API
1088 bool
5cae841b 1089
1da177e4 1090config PCI
a0113a99 1091 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
1da177e4
LT
1092 help
1093 Find out whether you have a PCI motherboard. PCI is the name of a
1094 bus system, i.e. the way the CPU talks to the other stuff inside
1095 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1096 VESA. If you have PCI, say Y, otherwise N.
1097
52882173
AV
1098config PCI_DOMAINS
1099 bool
1100 depends on PCI
1101
36e23590
MW
1102config PCI_SYSCALL
1103 def_bool PCI
1104
1da177e4
LT
1105# Select the host bridge type
1106config PCI_HOST_VIA82C505
1107 bool
1108 depends on PCI && ARCH_SHARK
1109 default y
1110
a0113a99
MR
1111config PCI_HOST_ITE8152
1112 bool
1113 depends on PCI && MACH_ARMCORE
1114 default y
1115 select DMABOUNCE
1116
1da177e4
LT
1117source "drivers/pci/Kconfig"
1118
1119source "drivers/pcmcia/Kconfig"
1120
1121endmenu
1122
1123menu "Kernel Features"
1124
0567a0c0
KH
1125source "kernel/time/Kconfig"
1126
1da177e4
LT
1127config SMP
1128 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
42578c82 1129 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
59ac59f6
RK
1130 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
1131 ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
bc28248e 1132 depends on GENERIC_CLOCKEVENTS
f6dd9fa5 1133 select USE_GENERIC_SMP_HELPERS
59ac59f6 1134 select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1da177e4
LT
1135 help
1136 This enables support for systems with more than one CPU. If you have
1137 a system with only one CPU, like most personal computers, say N. If
1138 you have a system with more than one CPU, say Y.
1139
1140 If you say N here, the kernel will run on single and multiprocessor
1141 machines, but will use only one CPU of a multiprocessor machine. If
1142 you say Y here, the kernel will run on many, but not all, single
1143 processor machines. On a single processor machine, the kernel will
1144 run faster if you say N here.
1145
03502faa 1146 See also <file:Documentation/i386/IO-APIC.txt>,
1da177e4
LT
1147 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1148 <http://www.linuxdoc.org/docs.html#howto>.
1149
1150 If you don't know what to do here, say N.
1151
a8cbcd92
RK
1152config HAVE_ARM_SCU
1153 bool
1154 depends on SMP
1155 help
1156 This option enables support for the ARM system coherency unit
1157
f32f4ce2
RK
1158config HAVE_ARM_TWD
1159 bool
1160 depends on SMP
1161 help
1162 This options enables support for the ARM timer and watchdog unit
1163
8d5796d2
LB
1164choice
1165 prompt "Memory split"
1166 default VMSPLIT_3G
1167 help
1168 Select the desired split between kernel and user memory.
1169
1170 If you are not absolutely sure what you are doing, leave this
1171 option alone!
1172
1173 config VMSPLIT_3G
1174 bool "3G/1G user/kernel split"
1175 config VMSPLIT_2G
1176 bool "2G/2G user/kernel split"
1177 config VMSPLIT_1G
1178 bool "1G/3G user/kernel split"
1179endchoice
1180
1181config PAGE_OFFSET
1182 hex
1183 default 0x40000000 if VMSPLIT_1G
1184 default 0x80000000 if VMSPLIT_2G
1185 default 0xC0000000
1186
1da177e4
LT
1187config NR_CPUS
1188 int "Maximum number of CPUs (2-32)"
1189 range 2 32
1190 depends on SMP
1191 default "4"
1192
a054a811
RK
1193config HOTPLUG_CPU
1194 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1195 depends on SMP && HOTPLUG && EXPERIMENTAL
1196 help
1197 Say Y here to experiment with turning CPUs off and on. CPUs
1198 can be controlled through /sys/devices/system/cpu.
1199
37ee16ae
RK
1200config LOCAL_TIMERS
1201 bool "Use local timer interrupts"
42578c82 1202 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
850265e8 1203 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
37ee16ae 1204 default y
850265e8 1205 select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
37ee16ae
RK
1206 help
1207 Enable support for local timers on SMP platforms, rather then the
1208 legacy IPI broadcast method. Local timers allows the system
1209 accounting to be spread across the timer interval, preventing a
1210 "thundering herd" at every timer tick.
1211
d45a398f 1212source kernel/Kconfig.preempt
1da177e4 1213
f8065813
RK
1214config HZ
1215 int
1216 default 128 if ARCH_L7200
170f4e42 1217 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
bfe65704 1218 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
5248c657 1219 default AT91_TIMER_HZ if ARCH_AT91
f8065813
RK
1220 default 100
1221
16c79651
CM
1222config THUMB2_KERNEL
1223 bool "Compile the kernel in Thumb-2 mode"
1224 depends on CPU_V7 && EXPERIMENTAL
1225 select AEABI
1226 select ARM_ASM_UNIFIED
1227 help
1228 By enabling this option, the kernel will be compiled in
1229 Thumb-2 mode. A compiler/assembler that understand the unified
1230 ARM-Thumb syntax is needed.
1231
1232 If unsure, say N.
1233
0becb088
CM
1234config ARM_ASM_UNIFIED
1235 bool
1236
704bdda0
NP
1237config AEABI
1238 bool "Use the ARM EABI to compile the kernel"
1239 help
1240 This option allows for the kernel to be compiled using the latest
1241 ARM ABI (aka EABI). This is only useful if you are using a user
1242 space environment that is also compiled with EABI.
1243
1244 Since there are major incompatibilities between the legacy ABI and
1245 EABI, especially with regard to structure member alignment, this
1246 option also changes the kernel syscall calling convention to
1247 disambiguate both ABIs and allow for backward compatibility support
1248 (selected with CONFIG_OABI_COMPAT).
1249
1250 To use this you need GCC version 4.0.0 or later.
1251
6c90c872 1252config OABI_COMPAT
a73a3ff1 1253 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
61c484d4 1254 depends on AEABI && EXPERIMENTAL
6c90c872
NP
1255 default y
1256 help
1257 This option preserves the old syscall interface along with the
1258 new (ARM EABI) one. It also provides a compatibility layer to
1259 intercept syscalls that have structure arguments which layout
1260 in memory differs between the legacy ABI and the new ARM EABI
1261 (only for non "thumb" binaries). This option adds a tiny
1262 overhead to all syscalls and produces a slightly larger kernel.
1263 If you know you'll be using only pure EABI user space then you
1264 can say N here. If this option is not selected and you attempt
1265 to execute a legacy ABI binary then the result will be
1266 UNPREDICTABLE (in fact it can be predicted that it won't work
1267 at all). If in doubt say Y.
1268
eb33575c 1269config ARCH_HAS_HOLES_MEMORYMODEL
e80d6a24 1270 bool
e80d6a24 1271
07a2f737 1272# Discontigmem is deprecated
3f22ab27 1273config ARCH_DISCONTIGMEM_ENABLE
1da177e4 1274 bool
1da177e4 1275
05944d74
RK
1276config ARCH_SPARSEMEM_ENABLE
1277 bool
1278
07a2f737
RK
1279config ARCH_SPARSEMEM_DEFAULT
1280 def_bool ARCH_SPARSEMEM_ENABLE
1281
05944d74 1282config ARCH_SELECT_MEMORY_MODEL
07a2f737 1283 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
05944d74 1284
c80d79d7
YG
1285config NODES_SHIFT
1286 int
1287 default "4" if ARCH_LH7A40X
1288 default "2"
1289 depends on NEED_MULTIPLE_NODES
1290
053a96ca
NP
1291config HIGHMEM
1292 bool "High Memory Support (EXPERIMENTAL)"
1293 depends on MMU && EXPERIMENTAL
1294 help
1295 The address space of ARM processors is only 4 Gigabytes large
1296 and it has to accommodate user address space, kernel address
1297 space as well as some memory mapped IO. That means that, if you
1298 have a large amount of physical memory and/or IO, not all of the
1299 memory can be "permanently mapped" by the kernel. The physical
1300 memory that is not permanently mapped is called "high memory".
1301
1302 Depending on the selected kernel/user memory split, minimum
1303 vmalloc space and actual amount of RAM, you may not need this
1304 option which should result in a slightly faster kernel.
1305
1306 If unsure, say n.
1307
65cec8e3
RK
1308config HIGHPTE
1309 bool "Allocate 2nd-level pagetables from highmem"
1310 depends on HIGHMEM
1311 depends on !OUTER_CACHE
1312
1b8873a0
JI
1313config HW_PERF_EVENTS
1314 bool "Enable hardware performance counter support for perf events"
fe166148 1315 depends on PERF_EVENTS && CPU_HAS_PMU
1b8873a0
JI
1316 default y
1317 help
1318 Enable hardware performance counter support for perf events. If
1319 disabled, perf events will use software events only.
1320
3f22ab27
DH
1321source "mm/Kconfig"
1322
1da177e4
LT
1323config LEDS
1324 bool "Timer and CPU usage LEDs"
e055d5bf 1325 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
8c8fdbc9 1326 ARCH_EBSA285 || ARCH_INTEGRATOR || \
1da177e4
LT
1327 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1328 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
73a59c1c 1329 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
25329671 1330 ARCH_AT91 || ARCH_DAVINCI || \
ff3042fb 1331 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1da177e4
LT
1332 help
1333 If you say Y here, the LEDs on your machine will be used
1334 to provide useful information about your current system status.
1335
1336 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1337 be able to select which LEDs are active using the options below. If
1338 you are compiling a kernel for the EBSA-110 or the LART however, the
1339 red LED will simply flash regularly to indicate that the system is
1340 still functional. It is safe to say Y here if you have a CATS
1341 system, but the driver will do nothing.
1342
1343config LEDS_TIMER
1344 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
eebdf7d7
DB
1345 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1346 || MACH_OMAP_PERSEUS2
1da177e4 1347 depends on LEDS
0567a0c0 1348 depends on !GENERIC_CLOCKEVENTS
1da177e4
LT
1349 default y if ARCH_EBSA110
1350 help
1351 If you say Y here, one of the system LEDs (the green one on the
1352 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1353 will flash regularly to indicate that the system is still
1354 operational. This is mainly useful to kernel hackers who are
1355 debugging unstable kernels.
1356
1357 The LART uses the same LED for both Timer LED and CPU usage LED
1358 functions. You may choose to use both, but the Timer LED function
1359 will overrule the CPU usage LED.
1360
1361config LEDS_CPU
1362 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
eebdf7d7
DB
1363 !ARCH_OMAP) \
1364 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1365 || MACH_OMAP_PERSEUS2
1da177e4
LT
1366 depends on LEDS
1367 help
1368 If you say Y here, the red LED will be used to give a good real
1369 time indication of CPU usage, by lighting whenever the idle task
1370 is not currently executing.
1371
1372 The LART uses the same LED for both Timer LED and CPU usage LED
1373 functions. You may choose to use both, but the Timer LED function
1374 will overrule the CPU usage LED.
1375
1376config ALIGNMENT_TRAP
1377 bool
f12d0d7c 1378 depends on CPU_CP15_MMU
1da177e4 1379 default y if !ARCH_EBSA110
e119bfff 1380 select HAVE_PROC_CPU if PROC_FS
1da177e4 1381 help
84eb8d06 1382 ARM processors cannot fetch/store information which is not
1da177e4
LT
1383 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1384 address divisible by 4. On 32-bit ARM processors, these non-aligned
1385 fetch/store instructions will be emulated in software if you say
1386 here, which has a severe performance impact. This is necessary for
1387 correct operation of some network protocols. With an IP-only
1388 configuration it is safe to say N, otherwise say Y.
1389
39ec58f3
LB
1390config UACCESS_WITH_MEMCPY
1391 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1392 depends on MMU && EXPERIMENTAL
1393 default y if CPU_FEROCEON
1394 help
1395 Implement faster copy_to_user and clear_user methods for CPU
1396 cores where a 8-word STM instruction give significantly higher
1397 memory write throughput than a sequence of individual 32bit stores.
1398
1399 A possible side effect is a slight increase in scheduling latency
1400 between threads sharing the same address space if they invoke
1401 such copy operations with large buffers.
1402
1403 However, if the CPU data cache is using a write-allocate mode,
1404 this option is unlikely to provide any performance gain.
1405
1da177e4
LT
1406endmenu
1407
1408menu "Boot options"
1409
1410# Compressed boot loader in ROM. Yes, we really want to ask about
1411# TEXT and BSS so we preserve their values in the config files.
1412config ZBOOT_ROM_TEXT
1413 hex "Compressed ROM boot loader base address"
1414 default "0"
1415 help
1416 The physical address at which the ROM-able zImage is to be
1417 placed in the target. Platforms which normally make use of
1418 ROM-able zImage formats normally set this to a suitable
1419 value in their defconfig file.
1420
1421 If ZBOOT_ROM is not enabled, this has no effect.
1422
1423config ZBOOT_ROM_BSS
1424 hex "Compressed ROM boot loader BSS address"
1425 default "0"
1426 help
f8c440b2
DF
1427 The base address of an area of read/write memory in the target
1428 for the ROM-able zImage which must be available while the
1429 decompressor is running. It must be large enough to hold the
1430 entire decompressed kernel plus an additional 128 KiB.
1431 Platforms which normally make use of ROM-able zImage formats
1432 normally set this to a suitable value in their defconfig file.
1da177e4
LT
1433
1434 If ZBOOT_ROM is not enabled, this has no effect.
1435
1436config ZBOOT_ROM
1437 bool "Compressed boot loader in ROM/flash"
1438 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1439 help
1440 Say Y here if you intend to execute your compressed kernel image
1441 (zImage) directly from ROM or flash. If unsure, say N.
1442
1443config CMDLINE
1444 string "Default kernel command string"
1445 default ""
1446 help
1447 On some architectures (EBSA110 and CATS), there is currently no way
1448 for the boot loader to pass arguments to the kernel. For these
1449 architectures, you should supply some command-line options at build
1450 time by entering them here. As a minimum, you should specify the
1451 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1452
1453config XIP_KERNEL
1454 bool "Kernel Execute-In-Place from ROM"
1455 depends on !ZBOOT_ROM
1456 help
1457 Execute-In-Place allows the kernel to run from non-volatile storage
1458 directly addressable by the CPU, such as NOR flash. This saves RAM
1459 space since the text section of the kernel is not loaded from flash
1460 to RAM. Read-write sections, such as the data section and stack,
1461 are still copied to RAM. The XIP kernel is not compressed since
1462 it has to run directly from flash, so it will take more space to
1463 store it. The flash address used to link the kernel object files,
1464 and for storing it, is configuration dependent. Therefore, if you
1465 say Y here, you must know the proper physical address where to
1466 store the kernel image depending on your own flash memory usage.
1467
1468 Also note that the make target becomes "make xipImage" rather than
1469 "make zImage" or "make Image". The final kernel binary to put in
1470 ROM memory will be arch/arm/boot/xipImage.
1471
1472 If unsure, say N.
1473
1474config XIP_PHYS_ADDR
1475 hex "XIP Kernel Physical Location"
1476 depends on XIP_KERNEL
1477 default "0x00080000"
1478 help
1479 This is the physical address in your flash memory the kernel will
1480 be linked for and stored to. This address is dependent on your
1481 own flash usage.
1482
c587e4a6
RP
1483config KEXEC
1484 bool "Kexec system call (EXPERIMENTAL)"
1485 depends on EXPERIMENTAL
1486 help
1487 kexec is a system call that implements the ability to shutdown your
1488 current kernel, and to start another kernel. It is like a reboot
01dd2fbf 1489 but it is independent of the system firmware. And like a reboot
c587e4a6
RP
1490 you can start any kernel with it, not just Linux.
1491
1492 It is an ongoing process to be certain the hardware in a machine
1493 is properly shutdown, so do not be surprised if this code does not
1494 initially work for you. It may help to enable device hotplugging
1495 support.
1496
4cd9d6f7
RP
1497config ATAGS_PROC
1498 bool "Export atags in procfs"
b98d7291
UL
1499 depends on KEXEC
1500 default y
4cd9d6f7
RP
1501 help
1502 Should the atags used to boot the kernel be exported in an "atags"
1503 file in procfs. Useful with kexec.
1504
1da177e4
LT
1505endmenu
1506
ac9d7efc 1507menu "CPU Power Management"
1da177e4 1508
89c52ed4 1509if ARCH_HAS_CPUFREQ
1da177e4
LT
1510
1511source "drivers/cpufreq/Kconfig"
1512
1513config CPU_FREQ_SA1100
1514 bool
1da177e4
LT
1515
1516config CPU_FREQ_SA1110
1517 bool
1da177e4
LT
1518
1519config CPU_FREQ_INTEGRATOR
1520 tristate "CPUfreq driver for ARM Integrator CPUs"
1521 depends on ARCH_INTEGRATOR && CPU_FREQ
1522 default y
1523 help
1524 This enables the CPUfreq driver for ARM Integrator CPUs.
1525
1526 For details, take a look at <file:Documentation/cpu-freq>.
1527
1528 If in doubt, say Y.
1529
9e2697ff
RK
1530config CPU_FREQ_PXA
1531 bool
1532 depends on CPU_FREQ && ARCH_PXA && PXA25x
1533 default y
1534 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1535
b3748ddd
MB
1536config CPU_FREQ_S3C64XX
1537 bool "CPUfreq support for Samsung S3C64XX CPUs"
1538 depends on CPU_FREQ && CPU_S3C6410
1539
9d56c02a
BD
1540config CPU_FREQ_S3C
1541 bool
1542 help
1543 Internal configuration node for common cpufreq on Samsung SoC
1544
1545config CPU_FREQ_S3C24XX
1546 bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1547 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1548 select CPU_FREQ_S3C
1549 help
1550 This enables the CPUfreq driver for the Samsung S3C24XX family
1551 of CPUs.
1552
1553 For details, take a look at <file:Documentation/cpu-freq>.
1554
1555 If in doubt, say N.
1556
1557config CPU_FREQ_S3C24XX_PLL
1558 bool "Support CPUfreq changing of PLL frequency"
1559 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1560 help
1561 Compile in support for changing the PLL frequency from the
1562 S3C24XX series CPUfreq driver. The PLL takes time to settle
1563 after a frequency change, so by default it is not enabled.
1564
1565 This also means that the PLL tables for the selected CPU(s) will
1566 be built which may increase the size of the kernel image.
1567
1568config CPU_FREQ_S3C24XX_DEBUG
1569 bool "Debug CPUfreq Samsung driver core"
1570 depends on CPU_FREQ_S3C24XX
1571 help
1572 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1573
1574config CPU_FREQ_S3C24XX_IODEBUG
1575 bool "Debug CPUfreq Samsung driver IO timing"
1576 depends on CPU_FREQ_S3C24XX
1577 help
1578 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1579
e6d197a6
BD
1580config CPU_FREQ_S3C24XX_DEBUGFS
1581 bool "Export debugfs for CPUFreq"
1582 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1583 help
1584 Export status information via debugfs.
1585
1da177e4
LT
1586endif
1587
ac9d7efc
RK
1588source "drivers/cpuidle/Kconfig"
1589
1590endmenu
1591
1da177e4
LT
1592menu "Floating point emulation"
1593
1594comment "At least one emulation must be selected"
1595
1596config FPE_NWFPE
1597 bool "NWFPE math emulation"
8993a44c 1598 depends on !AEABI || OABI_COMPAT
1da177e4
LT
1599 ---help---
1600 Say Y to include the NWFPE floating point emulator in the kernel.
1601 This is necessary to run most binaries. Linux does not currently
1602 support floating point hardware so you need to say Y here even if
1603 your machine has an FPA or floating point co-processor podule.
1604
1605 You may say N here if you are going to load the Acorn FPEmulator
1606 early in the bootup.
1607
1608config FPE_NWFPE_XP
1609 bool "Support extended precision"
bedf142b 1610 depends on FPE_NWFPE
1da177e4
LT
1611 help
1612 Say Y to include 80-bit support in the kernel floating-point
1613 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1614 Note that gcc does not generate 80-bit operations by default,
1615 so in most cases this option only enlarges the size of the
1616 floating point emulator without any good reason.
1617
1618 You almost surely want to say N here.
1619
1620config FPE_FASTFPE
1621 bool "FastFPE math emulation (EXPERIMENTAL)"
8993a44c 1622 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1da177e4
LT
1623 ---help---
1624 Say Y here to include the FAST floating point emulator in the kernel.
1625 This is an experimental much faster emulator which now also has full
1626 precision for the mantissa. It does not support any exceptions.
1627 It is very simple, and approximately 3-6 times faster than NWFPE.
1628
1629 It should be sufficient for most programs. It may be not suitable
1630 for scientific calculations, but you have to check this for yourself.
1631 If you do not feel you need a faster FP emulation you should better
1632 choose NWFPE.
1633
1634config VFP
1635 bool "VFP-format floating point maths"
c00d4ffd 1636 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1da177e4
LT
1637 help
1638 Say Y to include VFP support code in the kernel. This is needed
1639 if your hardware includes a VFP unit.
1640
1641 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1642 release notes and additional status information.
1643
1644 Say N if your target does not have VFP hardware.
1645
25ebee02
CM
1646config VFPv3
1647 bool
1648 depends on VFP
1649 default y if CPU_V7
1650
b5872db4
CM
1651config NEON
1652 bool "Advanced SIMD (NEON) Extension support"
1653 depends on VFPv3 && CPU_V7
1654 help
1655 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1656 Extension.
1657
1da177e4
LT
1658endmenu
1659
1660menu "Userspace binary formats"
1661
1662source "fs/Kconfig.binfmt"
1663
1664config ARTHUR
1665 tristate "RISC OS personality"
704bdda0 1666 depends on !AEABI
1da177e4
LT
1667 help
1668 Say Y here to include the kernel code necessary if you want to run
1669 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1670 experimental; if this sounds frightening, say N and sleep in peace.
1671 You can also say M here to compile this support as a module (which
1672 will be called arthur).
1673
1674endmenu
1675
1676menu "Power management options"
1677
eceab4ac 1678source "kernel/power/Kconfig"
1da177e4 1679
f4cb5700
JB
1680config ARCH_SUSPEND_POSSIBLE
1681 def_bool y
1682
1da177e4
LT
1683endmenu
1684
d5950b43
SR
1685source "net/Kconfig"
1686
ac25150f 1687source "drivers/Kconfig"
1da177e4
LT
1688
1689source "fs/Kconfig"
1690
1da177e4
LT
1691source "arch/arm/Kconfig.debug"
1692
1693source "security/Kconfig"
1694
1695source "crypto/Kconfig"
1696
1697source "lib/Kconfig"
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