ARM: S5PC100: Clock and PLL support
[GitHub/mt8127/android_kernel_alcatel_ttab.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
42d4b839 15 select HAVE_OPROFILE
5cbad0eb 16 select HAVE_ARCH_KGDB
3f550096 17 select HAVE_KPROBES if (!XIP_KERNEL)
9edddaa2 18 select HAVE_KRETPROBES if (HAVE_KPROBES)
606576ce 19 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
1fe53268 20 select HAVE_GENERIC_DMA_COHERENT
1da177e4
LT
21 help
22 The ARM series is a line of low-power-consumption RISC chip designs
f6c8965a 23 licensed by ARM Ltd and targeted at embedded applications and
1da177e4 24 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
f6c8965a 25 manufactured, but legacy ARM-based PC hardware remains popular in
1da177e4
LT
26 Europe. There is an ARM Linux project with a web page at
27 <http://www.arm.linux.org.uk/>.
28
1a189b97
RK
29config HAVE_PWM
30 bool
31
75e7153a
RB
32config SYS_SUPPORTS_APM_EMULATION
33 bool
34
0a938b97
DB
35config GENERIC_GPIO
36 bool
0a938b97 37
746140c7
KH
38config GENERIC_TIME
39 bool
746140c7 40
0567a0c0
KH
41config GENERIC_CLOCKEVENTS
42 bool
0567a0c0 43
a8655e83
CM
44config GENERIC_CLOCKEVENTS_BROADCAST
45 bool
46 depends on GENERIC_CLOCKEVENTS
47 default y if SMP && !LOCAL_TIMERS
48
1da177e4
LT
49config MMU
50 bool
51 default y
52
5ea81769
AV
53config NO_IOPORT
54 bool
5ea81769 55
1da177e4
LT
56config EISA
57 bool
58 ---help---
59 The Extended Industry Standard Architecture (EISA) bus was
60 developed as an open alternative to the IBM MicroChannel bus.
61
62 The EISA bus provided some of the features of the IBM MicroChannel
63 bus while maintaining backward compatibility with cards made for
64 the older ISA bus. The EISA bus saw limited use between 1988 and
65 1995 when it was made obsolete by the PCI bus.
66
67 Say Y here if you are building a kernel for an EISA-based machine.
68
69 Otherwise, say N.
70
71config SBUS
72 bool
73
74config MCA
75 bool
76 help
77 MicroChannel Architecture is found in some IBM PS/2 machines and
78 laptops. It is a bus system similar to PCI or ISA. See
79 <file:Documentation/mca.txt> (and especially the web page given
80 there) before attempting to build an MCA bus kernel.
81
4a2581a0
TG
82config GENERIC_HARDIRQS
83 bool
84 default y
85
f16fb1ec
RK
86config STACKTRACE_SUPPORT
87 bool
88 default y
89
f76e9154
NP
90config HAVE_LATENCYTOP_SUPPORT
91 bool
92 depends on !SMP
93 default y
94
f16fb1ec
RK
95config LOCKDEP_SUPPORT
96 bool
97 default y
98
7ad1bcb2
RK
99config TRACE_IRQFLAGS_SUPPORT
100 bool
101 default y
102
4a2581a0
TG
103config HARDIRQS_SW_RESEND
104 bool
105 default y
106
107config GENERIC_IRQ_PROBE
108 bool
109 default y
110
95c354fe
NP
111config GENERIC_LOCKBREAK
112 bool
113 default y
114 depends on SMP && PREEMPT
115
1da177e4
LT
116config RWSEM_GENERIC_SPINLOCK
117 bool
118 default y
119
120config RWSEM_XCHGADD_ALGORITHM
121 bool
122
f0d1b0b3
DH
123config ARCH_HAS_ILOG2_U32
124 bool
f0d1b0b3
DH
125
126config ARCH_HAS_ILOG2_U64
127 bool
f0d1b0b3 128
89c52ed4
BD
129config ARCH_HAS_CPUFREQ
130 bool
131 help
132 Internal node to signify that the ARCH has CPUFREQ support
133 and that the relevant menu configurations are displayed for
134 it.
135
b89c3b16
AM
136config GENERIC_HWEIGHT
137 bool
138 default y
139
1da177e4
LT
140config GENERIC_CALIBRATE_DELAY
141 bool
142 default y
143
a08b6b79
AV
144config ARCH_MAY_HAVE_PC_FDC
145 bool
146
5ac6da66
CL
147config ZONE_DMA
148 bool
5ac6da66 149
1da177e4
LT
150config GENERIC_ISA_DMA
151 bool
152
1da177e4
LT
153config FIQ
154 bool
155
034d2f5a
AV
156config ARCH_MTD_XIP
157 bool
158
60a752ef 159config GENERIC_HARDIRQS_NO__DO_IRQ
60a752ef
PZ
160 def_bool y
161
c0ffa3a9
MD
162if OPROFILE
163
164config OPROFILE_ARMV6
165 def_bool y
166 depends on CPU_V6 && !SMP
167 select OPROFILE_ARM11_CORE
168
169config OPROFILE_MPCORE
170 def_bool y
171 depends on CPU_V6 && SMP
172 select OPROFILE_ARM11_CORE
173
174config OPROFILE_ARM11_CORE
175 bool
176
d7ac4e28
JP
177config OPROFILE_ARMV7
178 def_bool y
179 depends on CPU_V7 && !SMP
180 bool
181
c0ffa3a9
MD
182endif
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
198choice
199 prompt "ARM system type"
6a0e2430 200 default ARCH_VERSATILE
1da177e4 201
4af6fee1
DS
202config ARCH_AAEC2000
203 bool "Agilent AAEC-2000 based"
c750815e 204 select CPU_ARM920T
4af6fee1 205 select ARM_AMBA
9483a578 206 select HAVE_CLK
4af6fee1
DS
207 help
208 This enables support for systems based on the Agilent AAEC-2000
209
210config ARCH_INTEGRATOR
211 bool "ARM Ltd. Integrator family"
212 select ARM_AMBA
89c52ed4 213 select ARCH_HAS_CPUFREQ
9483a578 214 select HAVE_CLK
d72fbdf0 215 select COMMON_CLKDEV
4af6fee1
DS
216 select ICST525
217 help
218 Support for ARM's Integrator platform.
219
220config ARCH_REALVIEW
221 bool "ARM Ltd. RealView family"
222 select ARM_AMBA
9483a578 223 select HAVE_CLK
cf30fb4a 224 select COMMON_CLKDEV
4af6fee1 225 select ICST307
85802afe 226 select GENERIC_TIME
ae30ceac 227 select GENERIC_CLOCKEVENTS
4af6fee1
DS
228 help
229 This enables support for ARM Ltd RealView boards.
230
231config ARCH_VERSATILE
232 bool "ARM Ltd. Versatile family"
233 select ARM_AMBA
234 select ARM_VIC
9483a578 235 select HAVE_CLK
71a06da0 236 select COMMON_CLKDEV
4af6fee1 237 select ICST307
b49c87c2 238 select GENERIC_TIME
89df1272 239 select GENERIC_CLOCKEVENTS
4af6fee1
DS
240 help
241 This enables support for ARM Ltd Versatile board.
242
8fc5ffa0
AV
243config ARCH_AT91
244 bool "Atmel AT91"
0a938b97 245 select GENERIC_GPIO
f373e8c0 246 select ARCH_REQUIRE_GPIOLIB
93686ae8 247 select HAVE_CLK
4af6fee1 248 help
2b3b3516
AV
249 This enables support for systems based on the Atmel AT91RM9200,
250 AT91SAM9 and AT91CAP9 processors.
4af6fee1 251
1da177e4 252config ARCH_CLPS711X
4af6fee1 253 bool "Cirrus Logic CLPS711x/EP721x-based"
c750815e 254 select CPU_ARM720T
f999b8bd
MM
255 help
256 Support for Cirrus Logic 711x/721x based boards.
1da177e4 257
788c9700
RK
258config ARCH_GEMINI
259 bool "Cortina Systems Gemini"
260 select CPU_FA526
261 select GENERIC_GPIO
262 select ARCH_REQUIRE_GPIOLIB
263 help
264 Support for the Cortina Systems Gemini family SoCs
265
1da177e4
LT
266config ARCH_EBSA110
267 bool "EBSA-110"
c750815e 268 select CPU_SA110
f7e68bbf 269 select ISA
c5eb2a2b 270 select NO_IOPORT
1da177e4
LT
271 help
272 This is an evaluation board for the StrongARM processor available
f6c8965a 273 from Digital. It has limited hardware on-board, including an
1da177e4
LT
274 Ethernet interface, two PCMCIA sockets, two serial ports and a
275 parallel port.
276
e7736d47
LB
277config ARCH_EP93XX
278 bool "EP93xx-based"
c750815e 279 select CPU_ARM920T
e7736d47
LB
280 select ARM_AMBA
281 select ARM_VIC
4e9f9fd5 282 select GENERIC_GPIO
9483a578 283 select HAVE_CLK
ae696fd5 284 select COMMON_CLKDEV
7444a72e 285 select ARCH_REQUIRE_GPIOLIB
eb33575c 286 select ARCH_HAS_HOLES_MEMORYMODEL
e7736d47
LB
287 help
288 This enables support for the Cirrus EP93xx series of CPUs.
289
1da177e4
LT
290config ARCH_FOOTBRIDGE
291 bool "FootBridge"
c750815e 292 select CPU_SA110
1da177e4 293 select FOOTBRIDGE
f999b8bd
MM
294 help
295 Support for systems based on the DC21285 companion chip
296 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1da177e4 297
788c9700
RK
298config ARCH_MXC
299 bool "Freescale MXC/iMX-based"
300 select GENERIC_TIME
301 select GENERIC_CLOCKEVENTS
302 select ARCH_MTD_XIP
303 select GENERIC_GPIO
304 select ARCH_REQUIRE_GPIOLIB
a2ab67fa 305 select HAVE_CLK
788c9700
RK
306 help
307 Support for Freescale MXC/iMX-based family of processors
308
7bd0f2f5 309config ARCH_STMP3XXX
310 bool "Freescale STMP3xxx"
311 select CPU_ARM926T
312 select HAVE_CLK
313 select COMMON_CLKDEV
314 select ARCH_REQUIRE_GPIOLIB
315 select GENERIC_TIME
316 select GENERIC_CLOCKEVENTS
317 select GENERIC_GPIO
318 select USB_ARCH_HAS_EHCI
319 help
320 Support for systems based on the Freescale 3xxx CPUs.
321
4af6fee1
DS
322config ARCH_NETX
323 bool "Hilscher NetX based"
c750815e 324 select CPU_ARM926T
4af6fee1 325 select ARM_VIC
2fcfe6b8 326 select GENERIC_CLOCKEVENTS
21edecd3 327 select GENERIC_TIME
f999b8bd 328 help
4af6fee1
DS
329 This enables support for systems based on the Hilscher NetX Soc
330
331config ARCH_H720X
332 bool "Hynix HMS720x-based"
c750815e 333 select CPU_ARM720T
4af6fee1
DS
334 select ISA_DMA_API
335 help
336 This enables support for systems based on the Hynix HMS720x
337
3b938be6
RK
338config ARCH_IOP13XX
339 bool "IOP13xx-based"
340 depends on MMU
c750815e 341 select CPU_XSC3
3b938be6
RK
342 select PLAT_IOP
343 select PCI
344 select ARCH_SUPPORTS_MSI
8d5796d2 345 select VMSPLIT_1G
3b938be6
RK
346 help
347 Support for Intel's IOP13XX (XScale) family of processors.
348
3f7e5815
LB
349config ARCH_IOP32X
350 bool "IOP32x-based"
a4f7e763 351 depends on MMU
c750815e 352 select CPU_XSCALE
7ae1f7ec 353 select PLAT_IOP
f7e68bbf 354 select PCI
63f385cd 355 select GENERIC_GPIO
bb2b180c 356 select ARCH_REQUIRE_GPIOLIB
f999b8bd 357 help
3f7e5815
LB
358 Support for Intel's 80219 and IOP32X (XScale) family of
359 processors.
360
361config ARCH_IOP33X
362 bool "IOP33x-based"
363 depends on MMU
c750815e 364 select CPU_XSCALE
7ae1f7ec 365 select PLAT_IOP
3f7e5815 366 select PCI
63f385cd 367 select GENERIC_GPIO
bb2b180c 368 select ARCH_REQUIRE_GPIOLIB
3f7e5815
LB
369 help
370 Support for Intel's IOP33X (XScale) family of processors.
1da177e4 371
3b938be6
RK
372config ARCH_IXP23XX
373 bool "IXP23XX-based"
a4f7e763 374 depends on MMU
c750815e 375 select CPU_XSC3
3b938be6 376 select PCI
f999b8bd 377 help
3b938be6 378 Support for Intel's IXP23xx (XScale) family of processors.
1da177e4
LT
379
380config ARCH_IXP2000
381 bool "IXP2400/2800-based"
a4f7e763 382 depends on MMU
c750815e 383 select CPU_XSCALE
f7e68bbf 384 select PCI
f999b8bd
MM
385 help
386 Support for Intel's IXP2400/2800 (XScale) family of processors.
1da177e4 387
3b938be6
RK
388config ARCH_IXP4XX
389 bool "IXP4xx-based"
a4f7e763 390 depends on MMU
c750815e 391 select CPU_XSCALE
8858e9af 392 select GENERIC_GPIO
3b938be6
RK
393 select GENERIC_TIME
394 select GENERIC_CLOCKEVENTS
485bdde7 395 select DMABOUNCE if PCI
c4713074 396 help
3b938be6 397 Support for Intel's IXP4XX (XScale) family of processors.
c4713074 398
1da177e4
LT
399config ARCH_L7200
400 bool "LinkUp-L7200"
c750815e 401 select CPU_ARM720T
1da177e4
LT
402 select FIQ
403 help
404 Say Y here if you intend to run this kernel on a LinkUp Systems
405 L7200 Software Development Board which uses an ARM720T processor.
406 Information on this board can be obtained at:
407
408 <http://www.linkupsys.com/>
409
410 If you have any questions or comments about the Linux kernel port
411 to this board, send e-mail to <sjhill@cotw.com>.
412
651c74c7
SB
413config ARCH_KIRKWOOD
414 bool "Marvell Kirkwood"
c750815e 415 select CPU_FEROCEON
651c74c7 416 select PCI
4c213430 417 select GENERIC_GPIO
a8865655 418 select ARCH_REQUIRE_GPIOLIB
651c74c7
SB
419 select GENERIC_TIME
420 select GENERIC_CLOCKEVENTS
421 select PLAT_ORION
422 help
423 Support for the following Marvell Kirkwood series SoCs:
424 88F6180, 88F6192 and 88F6281.
425
777f9beb
LB
426config ARCH_LOKI
427 bool "Marvell Loki (88RC8480)"
c750815e 428 select CPU_FEROCEON
777f9beb
LB
429 select GENERIC_TIME
430 select GENERIC_CLOCKEVENTS
431 select PLAT_ORION
432 help
433 Support for the Marvell Loki (88RC8480) SoC.
434
794d15b2
SS
435config ARCH_MV78XX0
436 bool "Marvell MV78xx0"
c750815e 437 select CPU_FEROCEON
794d15b2 438 select PCI
b95a13d7 439 select GENERIC_GPIO
a8865655 440 select ARCH_REQUIRE_GPIOLIB
794d15b2
SS
441 select GENERIC_TIME
442 select GENERIC_CLOCKEVENTS
443 select PLAT_ORION
444 help
445 Support for the following Marvell MV78xx0 series SoCs:
446 MV781x0, MV782x0.
447
9dd0b194 448config ARCH_ORION5X
585cf175
TP
449 bool "Marvell Orion"
450 depends on MMU
c750815e 451 select CPU_FEROCEON
038ee083 452 select PCI
01af72e4 453 select GENERIC_GPIO
a8865655 454 select ARCH_REQUIRE_GPIOLIB
51cbff1d
TP
455 select GENERIC_TIME
456 select GENERIC_CLOCKEVENTS
69b02f6a 457 select PLAT_ORION
585cf175 458 help
9dd0b194 459 Support for the following Marvell Orion 5x series SoCs:
d2b2a6bb 460 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
d323ade1 461 Orion-2 (5281), Orion-1-90 (6183).
585cf175 462
788c9700
RK
463config ARCH_MMP
464 bool "Marvell PXA168/910"
465 depends on MMU
466 select GENERIC_GPIO
467 select ARCH_REQUIRE_GPIOLIB
468 select HAVE_CLK
469 select COMMON_CLKDEV
470 select GENERIC_TIME
471 select GENERIC_CLOCKEVENTS
472 select TICK_ONESHOT
473 select PLAT_PXA
474 help
475 Support for Marvell's PXA168/910 processor line.
476
477config ARCH_KS8695
478 bool "Micrel/Kendin KS8695"
479 select CPU_ARM922T
480 select GENERIC_GPIO
481 select ARCH_REQUIRE_GPIOLIB
482 help
483 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
484 System-on-Chip devices.
485
486config ARCH_NS9XXX
487 bool "NetSilicon NS9xxx"
488 select CPU_ARM926T
489 select GENERIC_GPIO
490 select GENERIC_TIME
491 select GENERIC_CLOCKEVENTS
492 select HAVE_CLK
493 help
494 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
495 System.
496
497 <http://www.digi.com/products/microprocessors/index.jsp>
498
499config ARCH_W90X900
500 bool "Nuvoton W90X900 CPU"
501 select CPU_ARM926T
c52d3d68 502 select ARCH_REQUIRE_GPIOLIB
503 select GENERIC_GPIO
0e4a34bb 504 select COMMON_CLKDEV
788c9700
RK
505 help
506 Support for Nuvoton (Winbond logic dept.) ARM9 processor,You
507 can login www.mcuos.com or www.nuvoton.com to know more.
508
4af6fee1
DS
509config ARCH_PNX4008
510 bool "Philips Nexperia PNX4008 Mobile"
c750815e 511 select CPU_ARM926T
9483a578 512 select HAVE_CLK
4af6fee1
DS
513 help
514 This enables support for Philips PNX4008 mobile platform.
515
1da177e4 516config ARCH_PXA
2c8086a5 517 bool "PXA2xx/PXA3xx-based"
a4f7e763 518 depends on MMU
034d2f5a 519 select ARCH_MTD_XIP
89c52ed4 520 select ARCH_HAS_CPUFREQ
0a938b97 521 select GENERIC_GPIO
9483a578 522 select HAVE_CLK
8c3abc7d 523 select COMMON_CLKDEV
7444a72e 524 select ARCH_REQUIRE_GPIOLIB
45cf5eef 525 select GENERIC_TIME
981d0f39 526 select GENERIC_CLOCKEVENTS
a88264c2 527 select TICK_ONESHOT
bd5ce433 528 select PLAT_PXA
f999b8bd 529 help
2c8086a5 530 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
1da177e4 531
788c9700
RK
532config ARCH_MSM
533 bool "Qualcomm MSM"
534 select CPU_V6
49cbe786
EM
535 select GENERIC_TIME
536 select GENERIC_CLOCKEVENTS
49cbe786 537 help
788c9700
RK
538 Support for Qualcomm MSM7K based systems. This runs on the ARM11
539 apps processor of the MSM7K and depends on a shared memory
540 interface to the ARM9 modem processor which runs the baseband stack
541 and controls some vital subsystems (clock and power control, etc).
49cbe786 542
1da177e4
LT
543config ARCH_RPC
544 bool "RiscPC"
545 select ARCH_ACORN
546 select FIQ
547 select TIMER_ACORN
a08b6b79 548 select ARCH_MAY_HAVE_PC_FDC
341eb781 549 select HAVE_PATA_PLATFORM
065909b9 550 select ISA_DMA_API
5ea81769 551 select NO_IOPORT
07f841b7 552 select ARCH_SPARSEMEM_ENABLE
1da177e4
LT
553 help
554 On the Acorn Risc-PC, Linux can support the internal IDE disk and
555 CD-ROM interface, serial and parallel port, and the floppy drive.
556
557config ARCH_SA1100
558 bool "SA1100-based"
c750815e 559 select CPU_SA1100
f7e68bbf 560 select ISA
05944d74 561 select ARCH_SPARSEMEM_ENABLE
034d2f5a 562 select ARCH_MTD_XIP
89c52ed4 563 select ARCH_HAS_CPUFREQ
0a938b97 564 select GENERIC_GPIO
d142b6e7 565 select GENERIC_TIME
3e238be2 566 select GENERIC_CLOCKEVENTS
9483a578 567 select HAVE_CLK
3e238be2 568 select TICK_ONESHOT
7444a72e 569 select ARCH_REQUIRE_GPIOLIB
f999b8bd
MM
570 help
571 Support for StrongARM 11x0 based boards.
1da177e4
LT
572
573config ARCH_S3C2410
e4d06e39 574 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
0a938b97 575 select GENERIC_GPIO
9d56c02a 576 select ARCH_HAS_CPUFREQ
9483a578 577 select HAVE_CLK
1da177e4
LT
578 help
579 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
580 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
f6c8965a 581 the Samsung SMDK2410 development board (and derivatives).
1da177e4 582
a08ab637
BD
583config ARCH_S3C64XX
584 bool "Samsung S3C64XX"
585 select GENERIC_GPIO
586 select HAVE_CLK
89c52ed4 587 select ARCH_HAS_CPUFREQ
a08ab637
BD
588 help
589 Samsung S3C64XX series based systems
590
1da177e4
LT
591config ARCH_SHARK
592 bool "Shark"
c750815e 593 select CPU_SA110
f7e68bbf
RK
594 select ISA
595 select ISA_DMA
3bca103a 596 select ZONE_DMA
f7e68bbf 597 select PCI
f999b8bd
MM
598 help
599 Support for the StrongARM based Digital DNARD machine, also known
600 as "Shark" (<http://www.shark-linux.de/shark.html>).
1da177e4
LT
601
602config ARCH_LH7A40X
603 bool "Sharp LH7A40X"
c750815e 604 select CPU_ARM922T
4ba3f7c5
RK
605 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
606 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
1da177e4
LT
607 help
608 Say Y here for systems based on one of the Sharp LH7A40X
609 System on a Chip processors. These CPUs include an ARM922T
610 core with a wide array of integrated devices for
611 hand-held and low-power applications.
612
d98aac75
LW
613config ARCH_U300
614 bool "ST-Ericsson U300 Series"
615 depends on MMU
616 select CPU_ARM926T
617 select ARM_AMBA
618 select ARM_VIC
619 select GENERIC_TIME
620 select GENERIC_CLOCKEVENTS
621 select HAVE_CLK
622 select COMMON_CLKDEV
623 select GENERIC_GPIO
624 help
625 Support for ST-Ericsson U300 series mobile platforms.
626
7c6337e2
KH
627config ARCH_DAVINCI
628 bool "TI DaVinci"
c750815e 629 select CPU_ARM926T
7c6337e2
KH
630 select GENERIC_TIME
631 select GENERIC_CLOCKEVENTS
3d9edf09 632 select GENERIC_GPIO
dce1115b 633 select ARCH_REQUIRE_GPIOLIB
9483a578 634 select HAVE_CLK
3bca103a 635 select ZONE_DMA
9232fcc9 636 select HAVE_IDE
c5b736d0 637 select COMMON_CLKDEV
20e9969b 638 select GENERIC_ALLOCATOR
7c6337e2
KH
639 help
640 Support for TI's DaVinci platform.
641
3b938be6
RK
642config ARCH_OMAP
643 bool "TI OMAP"
644 select GENERIC_GPIO
9483a578 645 select HAVE_CLK
7444a72e 646 select ARCH_REQUIRE_GPIOLIB
89c52ed4 647 select ARCH_HAS_CPUFREQ
3b938be6 648 select GENERIC_TIME
06cad098 649 select GENERIC_CLOCKEVENTS
3b938be6
RK
650 help
651 Support for TI's OMAP platform (OMAP1 and OMAP2).
652
1da177e4
LT
653endchoice
654
655source "arch/arm/mach-clps711x/Kconfig"
656
e7736d47
LB
657source "arch/arm/mach-ep93xx/Kconfig"
658
1da177e4
LT
659source "arch/arm/mach-footbridge/Kconfig"
660
59d3a193
PZ
661source "arch/arm/mach-gemini/Kconfig"
662
1da177e4
LT
663source "arch/arm/mach-integrator/Kconfig"
664
3f7e5815
LB
665source "arch/arm/mach-iop32x/Kconfig"
666
667source "arch/arm/mach-iop33x/Kconfig"
1da177e4 668
285f5fa7
DW
669source "arch/arm/mach-iop13xx/Kconfig"
670
1da177e4
LT
671source "arch/arm/mach-ixp4xx/Kconfig"
672
673source "arch/arm/mach-ixp2000/Kconfig"
674
c4713074
LB
675source "arch/arm/mach-ixp23xx/Kconfig"
676
777f9beb
LB
677source "arch/arm/mach-loki/Kconfig"
678
794d15b2
SS
679source "arch/arm/mach-mv78xx0/Kconfig"
680
1da177e4 681source "arch/arm/mach-pxa/Kconfig"
bd5ce433 682source "arch/arm/plat-pxa/Kconfig"
1da177e4 683
49cbe786
EM
684source "arch/arm/mach-mmp/Kconfig"
685
1da177e4
LT
686source "arch/arm/mach-sa1100/Kconfig"
687
d48af15e
TL
688source "arch/arm/plat-omap/Kconfig"
689
690source "arch/arm/mach-omap1/Kconfig"
1da177e4 691
1dbae815
TL
692source "arch/arm/mach-omap2/Kconfig"
693
9dd0b194 694source "arch/arm/mach-orion5x/Kconfig"
585cf175 695
651c74c7 696source "arch/arm/mach-kirkwood/Kconfig"
585cf175 697
a21765a7 698source "arch/arm/plat-s3c24xx/Kconfig"
a08ab637 699source "arch/arm/plat-s3c64xx/Kconfig"
d58153d8 700source "arch/arm/plat-s3c/Kconfig"
a21765a7
BD
701
702if ARCH_S3C2410
703source "arch/arm/mach-s3c2400/Kconfig"
1da177e4 704source "arch/arm/mach-s3c2410/Kconfig"
a21765a7
BD
705source "arch/arm/mach-s3c2412/Kconfig"
706source "arch/arm/mach-s3c2440/Kconfig"
707source "arch/arm/mach-s3c2442/Kconfig"
e4d06e39 708source "arch/arm/mach-s3c2443/Kconfig"
a21765a7 709endif
1da177e4 710
a08ab637
BD
711if ARCH_S3C64XX
712source "arch/arm/mach-s3c6400/Kconfig"
713source "arch/arm/mach-s3c6410/Kconfig"
714endif
715
7bd0f2f5 716source "arch/arm/plat-stmp3xxx/Kconfig"
717
1da177e4
LT
718source "arch/arm/mach-lh7a40x/Kconfig"
719
1da177e4
LT
720source "arch/arm/mach-h720x/Kconfig"
721
722source "arch/arm/mach-versatile/Kconfig"
723
038c5b60
BN
724source "arch/arm/mach-aaec2000/Kconfig"
725
8ad68bbf
CM
726source "arch/arm/mach-realview/Kconfig"
727
9d041268 728source "arch/arm/mach-at91/Kconfig"
73a59c1c 729
52c543f9
QJ
730source "arch/arm/plat-mxc/Kconfig"
731
bb6d8c88
SH
732source "arch/arm/mach-netx/Kconfig"
733
9918cda5
UKK
734source "arch/arm/mach-ns9xxx/Kconfig"
735
7c6337e2
KH
736source "arch/arm/mach-davinci/Kconfig"
737
c53c9cf6
AV
738source "arch/arm/mach-ks8695/Kconfig"
739
9e73c84c
BS
740source "arch/arm/mach-msm/Kconfig"
741
d98aac75
LW
742source "arch/arm/mach-u300/Kconfig"
743
7ec80ddf 744source "arch/arm/mach-w90x900/Kconfig"
745
1da177e4
LT
746# Definitions to make life easier
747config ARCH_ACORN
748 bool
749
7ae1f7ec
LB
750config PLAT_IOP
751 bool
752
69b02f6a
LB
753config PLAT_ORION
754 bool
755
bd5ce433
EM
756config PLAT_PXA
757 bool
758
1da177e4
LT
759source arch/arm/mm/Kconfig
760
afe4b25e
LB
761config IWMMXT
762 bool "Enable iWMMXt support"
40305a58
EM
763 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
764 default y if PXA27x || PXA3xx || ARCH_MMP
afe4b25e
LB
765 help
766 Enable support for iWMMXt context switching at run time if
767 running on a CPU that supports it.
768
1da177e4
LT
769# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
770config XSCALE_PMU
771 bool
772 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
773 default y
774
3b93e7b0
HC
775if !MMU
776source "arch/arm/Kconfig-nommu"
777endif
778
9cba3ccc
CM
779config ARM_ERRATA_411920
780 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
781 depends on CPU_V6 && !SMP
782 help
783 Invalidation of the Instruction Cache operation can
784 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
785 It does not affect the MPCore. This option enables the ARM Ltd.
786 recommended workaround.
787
7ce236fc
CM
788config ARM_ERRATA_430973
789 bool "ARM errata: Stale prediction on replaced interworking branch"
790 depends on CPU_V7
791 help
792 This option enables the workaround for the 430973 Cortex-A8
793 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
794 interworking branch is replaced with another code sequence at the
795 same virtual address, whether due to self-modifying code or virtual
796 to physical address re-mapping, Cortex-A8 does not recover from the
797 stale interworking branch prediction. This results in Cortex-A8
798 executing the new code sequence in the incorrect ARM or Thumb state.
799 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
800 and also flushes the branch target cache at every context switch.
801 Note that setting specific bits in the ACTLR register may not be
802 available in non-secure mode.
803
855c551f
CM
804config ARM_ERRATA_458693
805 bool "ARM errata: Processor deadlock when a false hazard is created"
806 depends on CPU_V7
807 help
808 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
809 erratum. For very specific sequences of memory operations, it is
810 possible for a hazard condition intended for a cache line to instead
811 be incorrectly associated with a different cache line. This false
812 hazard might then cause a processor deadlock. The workaround enables
813 the L1 caching of the NEON accesses and disables the PLD instruction
814 in the ACTLR register. Note that setting specific bits in the ACTLR
815 register may not be available in non-secure mode.
816
0516e464
CM
817config ARM_ERRATA_460075
818 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
819 depends on CPU_V7
820 help
821 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
822 erratum. Any asynchronous access to the L2 cache may encounter a
823 situation in which recent store transactions to the L2 cache are lost
824 and overwritten with stale memory contents from external memory. The
825 workaround disables the write-allocate mode for the L2 cache via the
826 ACTLR register. Note that setting specific bits in the ACTLR register
827 may not be available in non-secure mode.
828
1da177e4
LT
829endmenu
830
831source "arch/arm/common/Kconfig"
832
833config FORCE_MAX_ZONEORDER
834 int
835 depends on SA1111
836 default "9"
837
838menu "Bus support"
839
840config ARM_AMBA
841 bool
842
843config ISA
844 bool
1da177e4
LT
845 help
846 Find out whether you have ISA slots on your motherboard. ISA is the
847 name of a bus system, i.e. the way the CPU talks to the other stuff
848 inside your box. Other bus systems are PCI, EISA, MicroChannel
849 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
850 newer boards don't support it. If you have ISA, say Y, otherwise N.
851
065909b9 852# Select ISA DMA controller support
1da177e4
LT
853config ISA_DMA
854 bool
065909b9 855 select ISA_DMA_API
1da177e4 856
065909b9 857# Select ISA DMA interface
5cae841b
AV
858config ISA_DMA_API
859 bool
5cae841b 860
1da177e4 861config PCI
a0113a99 862 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
1da177e4
LT
863 help
864 Find out whether you have a PCI motherboard. PCI is the name of a
865 bus system, i.e. the way the CPU talks to the other stuff inside
866 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
867 VESA. If you have PCI, say Y, otherwise N.
868
36e23590
MW
869config PCI_SYSCALL
870 def_bool PCI
871
1da177e4
LT
872# Select the host bridge type
873config PCI_HOST_VIA82C505
874 bool
875 depends on PCI && ARCH_SHARK
876 default y
877
a0113a99
MR
878config PCI_HOST_ITE8152
879 bool
880 depends on PCI && MACH_ARMCORE
881 default y
882 select DMABOUNCE
883
1da177e4
LT
884source "drivers/pci/Kconfig"
885
886source "drivers/pcmcia/Kconfig"
887
888endmenu
889
890menu "Kernel Features"
891
0567a0c0
KH
892source "kernel/time/Kconfig"
893
1da177e4
LT
894config SMP
895 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
42578c82
RK
896 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
897 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
bc28248e 898 depends on GENERIC_CLOCKEVENTS
f6dd9fa5 899 select USE_GENERIC_SMP_HELPERS
934f8be7 900 select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4)
1da177e4
LT
901 help
902 This enables support for systems with more than one CPU. If you have
903 a system with only one CPU, like most personal computers, say N. If
904 you have a system with more than one CPU, say Y.
905
906 If you say N here, the kernel will run on single and multiprocessor
907 machines, but will use only one CPU of a multiprocessor machine. If
908 you say Y here, the kernel will run on many, but not all, single
909 processor machines. On a single processor machine, the kernel will
910 run faster if you say N here.
911
03502faa 912 See also <file:Documentation/i386/IO-APIC.txt>,
1da177e4
LT
913 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
914 <http://www.linuxdoc.org/docs.html#howto>.
915
916 If you don't know what to do here, say N.
917
a8cbcd92
RK
918config HAVE_ARM_SCU
919 bool
920 depends on SMP
921 help
922 This option enables support for the ARM system coherency unit
923
f32f4ce2
RK
924config HAVE_ARM_TWD
925 bool
926 depends on SMP
927 help
928 This options enables support for the ARM timer and watchdog unit
929
8d5796d2
LB
930choice
931 prompt "Memory split"
932 default VMSPLIT_3G
933 help
934 Select the desired split between kernel and user memory.
935
936 If you are not absolutely sure what you are doing, leave this
937 option alone!
938
939 config VMSPLIT_3G
940 bool "3G/1G user/kernel split"
941 config VMSPLIT_2G
942 bool "2G/2G user/kernel split"
943 config VMSPLIT_1G
944 bool "1G/3G user/kernel split"
945endchoice
946
947config PAGE_OFFSET
948 hex
949 default 0x40000000 if VMSPLIT_1G
950 default 0x80000000 if VMSPLIT_2G
951 default 0xC0000000
952
1da177e4
LT
953config NR_CPUS
954 int "Maximum number of CPUs (2-32)"
955 range 2 32
956 depends on SMP
957 default "4"
958
a054a811
RK
959config HOTPLUG_CPU
960 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
961 depends on SMP && HOTPLUG && EXPERIMENTAL
962 help
963 Say Y here to experiment with turning CPUs off and on. CPUs
964 can be controlled through /sys/devices/system/cpu.
965
37ee16ae
RK
966config LOCAL_TIMERS
967 bool "Use local timer interrupts"
42578c82
RK
968 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
969 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
37ee16ae 970 default y
934f8be7 971 select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4)
37ee16ae
RK
972 help
973 Enable support for local timers on SMP platforms, rather then the
974 legacy IPI broadcast method. Local timers allows the system
975 accounting to be spread across the timer interval, preventing a
976 "thundering herd" at every timer tick.
977
1da177e4
LT
978config PREEMPT
979 bool "Preemptible Kernel (EXPERIMENTAL)"
980 depends on EXPERIMENTAL
981 help
982 This option reduces the latency of the kernel when reacting to
983 real-time or interactive events by allowing a low priority process to
984 be preempted even if it is in kernel mode executing a system call.
985 This allows applications to run more reliably even when the system is
986 under load.
987
988 Say Y here if you are building a kernel for a desktop, embedded
989 or real-time system. Say N if you are unsure.
990
f8065813
RK
991config HZ
992 int
993 default 128 if ARCH_L7200
994 default 200 if ARCH_EBSA110 || ARCH_S3C2410
bfe65704 995 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
5248c657 996 default AT91_TIMER_HZ if ARCH_AT91
f8065813
RK
997 default 100
998
704bdda0
NP
999config AEABI
1000 bool "Use the ARM EABI to compile the kernel"
1001 help
1002 This option allows for the kernel to be compiled using the latest
1003 ARM ABI (aka EABI). This is only useful if you are using a user
1004 space environment that is also compiled with EABI.
1005
1006 Since there are major incompatibilities between the legacy ABI and
1007 EABI, especially with regard to structure member alignment, this
1008 option also changes the kernel syscall calling convention to
1009 disambiguate both ABIs and allow for backward compatibility support
1010 (selected with CONFIG_OABI_COMPAT).
1011
1012 To use this you need GCC version 4.0.0 or later.
1013
6c90c872 1014config OABI_COMPAT
a73a3ff1 1015 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
61c484d4 1016 depends on AEABI && EXPERIMENTAL
6c90c872
NP
1017 default y
1018 help
1019 This option preserves the old syscall interface along with the
1020 new (ARM EABI) one. It also provides a compatibility layer to
1021 intercept syscalls that have structure arguments which layout
1022 in memory differs between the legacy ABI and the new ARM EABI
1023 (only for non "thumb" binaries). This option adds a tiny
1024 overhead to all syscalls and produces a slightly larger kernel.
1025 If you know you'll be using only pure EABI user space then you
1026 can say N here. If this option is not selected and you attempt
1027 to execute a legacy ABI binary then the result will be
1028 UNPREDICTABLE (in fact it can be predicted that it won't work
1029 at all). If in doubt say Y.
1030
eb33575c 1031config ARCH_HAS_HOLES_MEMORYMODEL
e80d6a24 1032 bool
e80d6a24 1033
07a2f737 1034# Discontigmem is deprecated
3f22ab27 1035config ARCH_DISCONTIGMEM_ENABLE
1da177e4 1036 bool
1da177e4 1037
05944d74
RK
1038config ARCH_SPARSEMEM_ENABLE
1039 bool
1040
07a2f737
RK
1041config ARCH_SPARSEMEM_DEFAULT
1042 def_bool ARCH_SPARSEMEM_ENABLE
1043
05944d74 1044config ARCH_SELECT_MEMORY_MODEL
07a2f737 1045 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
05944d74 1046
c80d79d7
YG
1047config NODES_SHIFT
1048 int
1049 default "4" if ARCH_LH7A40X
1050 default "2"
1051 depends on NEED_MULTIPLE_NODES
1052
053a96ca
NP
1053config HIGHMEM
1054 bool "High Memory Support (EXPERIMENTAL)"
1055 depends on MMU && EXPERIMENTAL
1056 help
1057 The address space of ARM processors is only 4 Gigabytes large
1058 and it has to accommodate user address space, kernel address
1059 space as well as some memory mapped IO. That means that, if you
1060 have a large amount of physical memory and/or IO, not all of the
1061 memory can be "permanently mapped" by the kernel. The physical
1062 memory that is not permanently mapped is called "high memory".
1063
1064 Depending on the selected kernel/user memory split, minimum
1065 vmalloc space and actual amount of RAM, you may not need this
1066 option which should result in a slightly faster kernel.
1067
1068 If unsure, say n.
1069
3f22ab27
DH
1070source "mm/Kconfig"
1071
1da177e4
LT
1072config LEDS
1073 bool "Timer and CPU usage LEDs"
e055d5bf 1074 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
8c8fdbc9 1075 ARCH_EBSA285 || ARCH_INTEGRATOR || \
1da177e4
LT
1076 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1077 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
73a59c1c 1078 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
25329671 1079 ARCH_AT91 || ARCH_DAVINCI || \
ff3042fb 1080 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1da177e4
LT
1081 help
1082 If you say Y here, the LEDs on your machine will be used
1083 to provide useful information about your current system status.
1084
1085 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1086 be able to select which LEDs are active using the options below. If
1087 you are compiling a kernel for the EBSA-110 or the LART however, the
1088 red LED will simply flash regularly to indicate that the system is
1089 still functional. It is safe to say Y here if you have a CATS
1090 system, but the driver will do nothing.
1091
1092config LEDS_TIMER
1093 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
eebdf7d7
DB
1094 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1095 || MACH_OMAP_PERSEUS2
1da177e4 1096 depends on LEDS
0567a0c0 1097 depends on !GENERIC_CLOCKEVENTS
1da177e4
LT
1098 default y if ARCH_EBSA110
1099 help
1100 If you say Y here, one of the system LEDs (the green one on the
1101 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1102 will flash regularly to indicate that the system is still
1103 operational. This is mainly useful to kernel hackers who are
1104 debugging unstable kernels.
1105
1106 The LART uses the same LED for both Timer LED and CPU usage LED
1107 functions. You may choose to use both, but the Timer LED function
1108 will overrule the CPU usage LED.
1109
1110config LEDS_CPU
1111 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
eebdf7d7
DB
1112 !ARCH_OMAP) \
1113 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1114 || MACH_OMAP_PERSEUS2
1da177e4
LT
1115 depends on LEDS
1116 help
1117 If you say Y here, the red LED will be used to give a good real
1118 time indication of CPU usage, by lighting whenever the idle task
1119 is not currently executing.
1120
1121 The LART uses the same LED for both Timer LED and CPU usage LED
1122 functions. You may choose to use both, but the Timer LED function
1123 will overrule the CPU usage LED.
1124
1125config ALIGNMENT_TRAP
1126 bool
f12d0d7c 1127 depends on CPU_CP15_MMU
1da177e4
LT
1128 default y if !ARCH_EBSA110
1129 help
84eb8d06 1130 ARM processors cannot fetch/store information which is not
1da177e4
LT
1131 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1132 address divisible by 4. On 32-bit ARM processors, these non-aligned
1133 fetch/store instructions will be emulated in software if you say
1134 here, which has a severe performance impact. This is necessary for
1135 correct operation of some network protocols. With an IP-only
1136 configuration it is safe to say N, otherwise say Y.
1137
39ec58f3
LB
1138config UACCESS_WITH_MEMCPY
1139 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1140 depends on MMU && EXPERIMENTAL
1141 default y if CPU_FEROCEON
1142 help
1143 Implement faster copy_to_user and clear_user methods for CPU
1144 cores where a 8-word STM instruction give significantly higher
1145 memory write throughput than a sequence of individual 32bit stores.
1146
1147 A possible side effect is a slight increase in scheduling latency
1148 between threads sharing the same address space if they invoke
1149 such copy operations with large buffers.
1150
1151 However, if the CPU data cache is using a write-allocate mode,
1152 this option is unlikely to provide any performance gain.
1153
1da177e4
LT
1154endmenu
1155
1156menu "Boot options"
1157
1158# Compressed boot loader in ROM. Yes, we really want to ask about
1159# TEXT and BSS so we preserve their values in the config files.
1160config ZBOOT_ROM_TEXT
1161 hex "Compressed ROM boot loader base address"
1162 default "0"
1163 help
1164 The physical address at which the ROM-able zImage is to be
1165 placed in the target. Platforms which normally make use of
1166 ROM-able zImage formats normally set this to a suitable
1167 value in their defconfig file.
1168
1169 If ZBOOT_ROM is not enabled, this has no effect.
1170
1171config ZBOOT_ROM_BSS
1172 hex "Compressed ROM boot loader BSS address"
1173 default "0"
1174 help
f8c440b2
DF
1175 The base address of an area of read/write memory in the target
1176 for the ROM-able zImage which must be available while the
1177 decompressor is running. It must be large enough to hold the
1178 entire decompressed kernel plus an additional 128 KiB.
1179 Platforms which normally make use of ROM-able zImage formats
1180 normally set this to a suitable value in their defconfig file.
1da177e4
LT
1181
1182 If ZBOOT_ROM is not enabled, this has no effect.
1183
1184config ZBOOT_ROM
1185 bool "Compressed boot loader in ROM/flash"
1186 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1187 help
1188 Say Y here if you intend to execute your compressed kernel image
1189 (zImage) directly from ROM or flash. If unsure, say N.
1190
1191config CMDLINE
1192 string "Default kernel command string"
1193 default ""
1194 help
1195 On some architectures (EBSA110 and CATS), there is currently no way
1196 for the boot loader to pass arguments to the kernel. For these
1197 architectures, you should supply some command-line options at build
1198 time by entering them here. As a minimum, you should specify the
1199 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1200
1201config XIP_KERNEL
1202 bool "Kernel Execute-In-Place from ROM"
1203 depends on !ZBOOT_ROM
1204 help
1205 Execute-In-Place allows the kernel to run from non-volatile storage
1206 directly addressable by the CPU, such as NOR flash. This saves RAM
1207 space since the text section of the kernel is not loaded from flash
1208 to RAM. Read-write sections, such as the data section and stack,
1209 are still copied to RAM. The XIP kernel is not compressed since
1210 it has to run directly from flash, so it will take more space to
1211 store it. The flash address used to link the kernel object files,
1212 and for storing it, is configuration dependent. Therefore, if you
1213 say Y here, you must know the proper physical address where to
1214 store the kernel image depending on your own flash memory usage.
1215
1216 Also note that the make target becomes "make xipImage" rather than
1217 "make zImage" or "make Image". The final kernel binary to put in
1218 ROM memory will be arch/arm/boot/xipImage.
1219
1220 If unsure, say N.
1221
1222config XIP_PHYS_ADDR
1223 hex "XIP Kernel Physical Location"
1224 depends on XIP_KERNEL
1225 default "0x00080000"
1226 help
1227 This is the physical address in your flash memory the kernel will
1228 be linked for and stored to. This address is dependent on your
1229 own flash usage.
1230
c587e4a6
RP
1231config KEXEC
1232 bool "Kexec system call (EXPERIMENTAL)"
1233 depends on EXPERIMENTAL
1234 help
1235 kexec is a system call that implements the ability to shutdown your
1236 current kernel, and to start another kernel. It is like a reboot
01dd2fbf 1237 but it is independent of the system firmware. And like a reboot
c587e4a6
RP
1238 you can start any kernel with it, not just Linux.
1239
1240 It is an ongoing process to be certain the hardware in a machine
1241 is properly shutdown, so do not be surprised if this code does not
1242 initially work for you. It may help to enable device hotplugging
1243 support.
1244
4cd9d6f7
RP
1245config ATAGS_PROC
1246 bool "Export atags in procfs"
b98d7291
UL
1247 depends on KEXEC
1248 default y
4cd9d6f7
RP
1249 help
1250 Should the atags used to boot the kernel be exported in an "atags"
1251 file in procfs. Useful with kexec.
1252
1da177e4
LT
1253endmenu
1254
ac9d7efc 1255menu "CPU Power Management"
1da177e4 1256
89c52ed4 1257if ARCH_HAS_CPUFREQ
1da177e4
LT
1258
1259source "drivers/cpufreq/Kconfig"
1260
1261config CPU_FREQ_SA1100
1262 bool
7bc35b56 1263 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1da177e4
LT
1264 default y
1265
1266config CPU_FREQ_SA1110
1267 bool
1268 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1269 default y
1270
1271config CPU_FREQ_INTEGRATOR
1272 tristate "CPUfreq driver for ARM Integrator CPUs"
1273 depends on ARCH_INTEGRATOR && CPU_FREQ
1274 default y
1275 help
1276 This enables the CPUfreq driver for ARM Integrator CPUs.
1277
1278 For details, take a look at <file:Documentation/cpu-freq>.
1279
1280 If in doubt, say Y.
1281
9e2697ff
RK
1282config CPU_FREQ_PXA
1283 bool
1284 depends on CPU_FREQ && ARCH_PXA && PXA25x
1285 default y
1286 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1287
b3748ddd
MB
1288config CPU_FREQ_S3C64XX
1289 bool "CPUfreq support for Samsung S3C64XX CPUs"
1290 depends on CPU_FREQ && CPU_S3C6410
1291
9d56c02a
BD
1292config CPU_FREQ_S3C
1293 bool
1294 help
1295 Internal configuration node for common cpufreq on Samsung SoC
1296
1297config CPU_FREQ_S3C24XX
1298 bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1299 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1300 select CPU_FREQ_S3C
1301 help
1302 This enables the CPUfreq driver for the Samsung S3C24XX family
1303 of CPUs.
1304
1305 For details, take a look at <file:Documentation/cpu-freq>.
1306
1307 If in doubt, say N.
1308
1309config CPU_FREQ_S3C24XX_PLL
1310 bool "Support CPUfreq changing of PLL frequency"
1311 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1312 help
1313 Compile in support for changing the PLL frequency from the
1314 S3C24XX series CPUfreq driver. The PLL takes time to settle
1315 after a frequency change, so by default it is not enabled.
1316
1317 This also means that the PLL tables for the selected CPU(s) will
1318 be built which may increase the size of the kernel image.
1319
1320config CPU_FREQ_S3C24XX_DEBUG
1321 bool "Debug CPUfreq Samsung driver core"
1322 depends on CPU_FREQ_S3C24XX
1323 help
1324 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1325
1326config CPU_FREQ_S3C24XX_IODEBUG
1327 bool "Debug CPUfreq Samsung driver IO timing"
1328 depends on CPU_FREQ_S3C24XX
1329 help
1330 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1331
e6d197a6
BD
1332config CPU_FREQ_S3C24XX_DEBUGFS
1333 bool "Export debugfs for CPUFreq"
1334 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1335 help
1336 Export status information via debugfs.
1337
1da177e4
LT
1338endif
1339
ac9d7efc
RK
1340source "drivers/cpuidle/Kconfig"
1341
1342endmenu
1343
1da177e4
LT
1344menu "Floating point emulation"
1345
1346comment "At least one emulation must be selected"
1347
1348config FPE_NWFPE
1349 bool "NWFPE math emulation"
8993a44c 1350 depends on !AEABI || OABI_COMPAT
1da177e4
LT
1351 ---help---
1352 Say Y to include the NWFPE floating point emulator in the kernel.
1353 This is necessary to run most binaries. Linux does not currently
1354 support floating point hardware so you need to say Y here even if
1355 your machine has an FPA or floating point co-processor podule.
1356
1357 You may say N here if you are going to load the Acorn FPEmulator
1358 early in the bootup.
1359
1360config FPE_NWFPE_XP
1361 bool "Support extended precision"
bedf142b 1362 depends on FPE_NWFPE
1da177e4
LT
1363 help
1364 Say Y to include 80-bit support in the kernel floating-point
1365 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1366 Note that gcc does not generate 80-bit operations by default,
1367 so in most cases this option only enlarges the size of the
1368 floating point emulator without any good reason.
1369
1370 You almost surely want to say N here.
1371
1372config FPE_FASTFPE
1373 bool "FastFPE math emulation (EXPERIMENTAL)"
8993a44c 1374 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1da177e4
LT
1375 ---help---
1376 Say Y here to include the FAST floating point emulator in the kernel.
1377 This is an experimental much faster emulator which now also has full
1378 precision for the mantissa. It does not support any exceptions.
1379 It is very simple, and approximately 3-6 times faster than NWFPE.
1380
1381 It should be sufficient for most programs. It may be not suitable
1382 for scientific calculations, but you have to check this for yourself.
1383 If you do not feel you need a faster FP emulation you should better
1384 choose NWFPE.
1385
1386config VFP
1387 bool "VFP-format floating point maths"
c00d4ffd 1388 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1da177e4
LT
1389 help
1390 Say Y to include VFP support code in the kernel. This is needed
1391 if your hardware includes a VFP unit.
1392
1393 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1394 release notes and additional status information.
1395
1396 Say N if your target does not have VFP hardware.
1397
25ebee02
CM
1398config VFPv3
1399 bool
1400 depends on VFP
1401 default y if CPU_V7
1402
b5872db4
CM
1403config NEON
1404 bool "Advanced SIMD (NEON) Extension support"
1405 depends on VFPv3 && CPU_V7
1406 help
1407 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1408 Extension.
1409
1da177e4
LT
1410endmenu
1411
1412menu "Userspace binary formats"
1413
1414source "fs/Kconfig.binfmt"
1415
1416config ARTHUR
1417 tristate "RISC OS personality"
704bdda0 1418 depends on !AEABI
1da177e4
LT
1419 help
1420 Say Y here to include the kernel code necessary if you want to run
1421 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1422 experimental; if this sounds frightening, say N and sleep in peace.
1423 You can also say M here to compile this support as a module (which
1424 will be called arthur).
1425
1426endmenu
1427
1428menu "Power management options"
1429
eceab4ac 1430source "kernel/power/Kconfig"
1da177e4 1431
f4cb5700
JB
1432config ARCH_SUSPEND_POSSIBLE
1433 def_bool y
1434
1da177e4
LT
1435endmenu
1436
d5950b43
SR
1437source "net/Kconfig"
1438
1da177e4
LT
1439menu "Device Drivers"
1440
1441source "drivers/base/Kconfig"
1442
c35bf4a5
PM
1443source "drivers/connector/Kconfig"
1444
f12d0d7c 1445if ALIGNMENT_TRAP || !CPU_CP15_MMU
1da177e4
LT
1446source "drivers/mtd/Kconfig"
1447endif
1448
1449source "drivers/parport/Kconfig"
1450
1451source "drivers/pnp/Kconfig"
1452
1453source "drivers/block/Kconfig"
1454
58273e55
RK
1455# misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1456
1457source "drivers/misc/Kconfig"
1458
1da177e4 1459source "drivers/ide/Kconfig"
1da177e4
LT
1460
1461source "drivers/scsi/Kconfig"
1462
eb370f0b
MM
1463source "drivers/ata/Kconfig"
1464
1da177e4
LT
1465source "drivers/md/Kconfig"
1466
1467source "drivers/message/fusion/Kconfig"
1468
1469source "drivers/ieee1394/Kconfig"
1470
1471source "drivers/message/i2o/Kconfig"
1472
d5950b43 1473source "drivers/net/Kconfig"
1da177e4
LT
1474
1475source "drivers/isdn/Kconfig"
1476
1477# input before char - char/joystick depends on it. As does USB.
1478
1479source "drivers/input/Kconfig"
1480
1481source "drivers/char/Kconfig"
1482
1483source "drivers/i2c/Kconfig"
1484
8ae12a0d
DB
1485source "drivers/spi/Kconfig"
1486
a9c5fff5
DB
1487source "drivers/gpio/Kconfig"
1488
04916c0e
AZ
1489source "drivers/w1/Kconfig"
1490
58273e55
RK
1491source "drivers/power/Kconfig"
1492
ad2f931d
JD
1493source "drivers/hwmon/Kconfig"
1494
ac9d7efc
RK
1495source "drivers/thermal/Kconfig"
1496
70dfa3f8
RK
1497source "drivers/watchdog/Kconfig"
1498
58273e55 1499source "drivers/ssb/Kconfig"
1da177e4 1500
58273e55 1501#source "drivers/l3/Kconfig"
1da177e4 1502
a4e137ab
RK
1503source "drivers/mfd/Kconfig"
1504
1da177e4
LT
1505source "drivers/media/Kconfig"
1506
1507source "drivers/video/Kconfig"
1508
1509source "sound/Kconfig"
1510
c2dade51
SH
1511source "drivers/hid/Kconfig"
1512
1da177e4
LT
1513source "drivers/usb/Kconfig"
1514
2f86c3e6
GKH
1515source "drivers/uwb/Kconfig"
1516
1da177e4
LT
1517source "drivers/mmc/Kconfig"
1518
ac9d7efc
RK
1519source "drivers/memstick/Kconfig"
1520
1521source "drivers/accessibility/Kconfig"
1522
58273e55
RK
1523source "drivers/leds/Kconfig"
1524
12b824fb
AZ
1525source "drivers/rtc/Kconfig"
1526
5816815f
DW
1527source "drivers/dma/Kconfig"
1528
abf07b19
DW
1529source "drivers/dca/Kconfig"
1530
ac9d7efc
RK
1531source "drivers/auxdisplay/Kconfig"
1532
ba7e4763
LG
1533source "drivers/regulator/Kconfig"
1534
2dc034a8
HJK
1535source "drivers/uio/Kconfig"
1536
6e38a2ba
DH
1537source "drivers/staging/Kconfig"
1538
1da177e4
LT
1539endmenu
1540
1541source "fs/Kconfig"
1542
1da177e4
LT
1543source "arch/arm/Kconfig.debug"
1544
1545source "security/Kconfig"
1546
1547source "crypto/Kconfig"
1548
1549source "lib/Kconfig"