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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)
42d4b839 16 select HAVE_OPROFILE
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
7ada189f
JI
24 select HAVE_PERF_EVENTS
25 select PERF_USE_VMALLOC
1da177e4
LT
26 help
27 The ARM series is a line of low-power-consumption RISC chip designs
f6c8965a 28 licensed by ARM Ltd and targeted at embedded applications and
1da177e4 29 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
f6c8965a 30 manufactured, but legacy ARM-based PC hardware remains popular in
1da177e4
LT
31 Europe. There is an ARM Linux project with a web page at
32 <http://www.arm.linux.org.uk/>.
33
1a189b97
RK
34config HAVE_PWM
35 bool
36
75e7153a
RB
37config SYS_SUPPORTS_APM_EMULATION
38 bool
39
0a938b97
DB
40config GENERIC_GPIO
41 bool
0a938b97 42
746140c7
KH
43config GENERIC_TIME
44 bool
746140c7 45
0567a0c0
KH
46config GENERIC_CLOCKEVENTS
47 bool
0567a0c0 48
a8655e83
CM
49config GENERIC_CLOCKEVENTS_BROADCAST
50 bool
51 depends on GENERIC_CLOCKEVENTS
52 default y if SMP && !LOCAL_TIMERS
53
bc581770
LW
54config HAVE_TCM
55 bool
56 select GENERIC_ALLOCATOR
57
e119bfff
RK
58config HAVE_PROC_CPU
59 bool
60
5ea81769
AV
61config NO_IOPORT
62 bool
5ea81769 63
1da177e4
LT
64config EISA
65 bool
66 ---help---
67 The Extended Industry Standard Architecture (EISA) bus was
68 developed as an open alternative to the IBM MicroChannel bus.
69
70 The EISA bus provided some of the features of the IBM MicroChannel
71 bus while maintaining backward compatibility with cards made for
72 the older ISA bus. The EISA bus saw limited use between 1988 and
73 1995 when it was made obsolete by the PCI bus.
74
75 Say Y here if you are building a kernel for an EISA-based machine.
76
77 Otherwise, say N.
78
79config SBUS
80 bool
81
82config MCA
83 bool
84 help
85 MicroChannel Architecture is found in some IBM PS/2 machines and
86 laptops. It is a bus system similar to PCI or ISA. See
87 <file:Documentation/mca.txt> (and especially the web page given
88 there) before attempting to build an MCA bus kernel.
89
4a2581a0
TG
90config GENERIC_HARDIRQS
91 bool
92 default y
93
f16fb1ec
RK
94config STACKTRACE_SUPPORT
95 bool
96 default y
97
f76e9154
NP
98config HAVE_LATENCYTOP_SUPPORT
99 bool
100 depends on !SMP
101 default y
102
f16fb1ec
RK
103config LOCKDEP_SUPPORT
104 bool
105 default y
106
7ad1bcb2
RK
107config TRACE_IRQFLAGS_SUPPORT
108 bool
109 default y
110
4a2581a0
TG
111config HARDIRQS_SW_RESEND
112 bool
113 default y
114
115config GENERIC_IRQ_PROBE
116 bool
117 default y
118
95c354fe
NP
119config GENERIC_LOCKBREAK
120 bool
121 default y
122 depends on SMP && PREEMPT
123
1da177e4
LT
124config RWSEM_GENERIC_SPINLOCK
125 bool
126 default y
127
128config RWSEM_XCHGADD_ALGORITHM
129 bool
130
f0d1b0b3
DH
131config ARCH_HAS_ILOG2_U32
132 bool
f0d1b0b3
DH
133
134config ARCH_HAS_ILOG2_U64
135 bool
f0d1b0b3 136
89c52ed4
BD
137config ARCH_HAS_CPUFREQ
138 bool
139 help
140 Internal node to signify that the ARCH has CPUFREQ support
141 and that the relevant menu configurations are displayed for
142 it.
143
b89c3b16
AM
144config GENERIC_HWEIGHT
145 bool
146 default y
147
1da177e4
LT
148config GENERIC_CALIBRATE_DELAY
149 bool
150 default y
151
a08b6b79
AV
152config ARCH_MAY_HAVE_PC_FDC
153 bool
154
5ac6da66
CL
155config ZONE_DMA
156 bool
5ac6da66 157
ccd7ab7f
FT
158config NEED_DMA_MAP_STATE
159 def_bool y
160
1da177e4
LT
161config GENERIC_ISA_DMA
162 bool
163
1da177e4
LT
164config FIQ
165 bool
166
034d2f5a
AV
167config ARCH_MTD_XIP
168 bool
169
60a752ef 170config GENERIC_HARDIRQS_NO__DO_IRQ
60a752ef
PZ
171 def_bool y
172
d6d502fa
KK
173config ARM_L1_CACHE_SHIFT_6
174 bool
175 help
176 Setting ARM L1 cache line size to 64 Bytes.
177
c0ffa3a9
MD
178if OPROFILE
179
180config OPROFILE_ARMV6
181 def_bool y
182 depends on CPU_V6 && !SMP
183 select OPROFILE_ARM11_CORE
184
185config OPROFILE_MPCORE
186 def_bool y
187 depends on CPU_V6 && SMP
188 select OPROFILE_ARM11_CORE
189
190config OPROFILE_ARM11_CORE
191 bool
192
d7ac4e28
JP
193config OPROFILE_ARMV7
194 def_bool y
195 depends on CPU_V7 && !SMP
196 bool
197
c0ffa3a9
MD
198endif
199
c760fc19
HC
200config VECTORS_BASE
201 hex
6afd6fae 202 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
c760fc19
HC
203 default DRAM_BASE if REMAP_VECTORS_TO_RAM
204 default 0x00000000
205 help
206 The base address of exception vectors.
207
1da177e4
LT
208source "init/Kconfig"
209
dc52ddc0
MH
210source "kernel/Kconfig.freezer"
211
1da177e4
LT
212menu "System Type"
213
3c427975
HC
214config MMU
215 bool "MMU-based Paged Memory Management Support"
216 default y
217 help
218 Select if you want MMU-based virtualised addressing space
219 support by paged memory management. If unsure, say 'Y'.
220
ccf50e23
RK
221#
222# The "ARM system type" choice list is ordered alphabetically by option
223# text. Please add new entries in the option alphabetic order.
224#
1da177e4
LT
225choice
226 prompt "ARM system type"
6a0e2430 227 default ARCH_VERSATILE
1da177e4 228
4af6fee1
DS
229config ARCH_AAEC2000
230 bool "Agilent AAEC-2000 based"
c750815e 231 select CPU_ARM920T
4af6fee1 232 select ARM_AMBA
9483a578 233 select HAVE_CLK
4af6fee1
DS
234 help
235 This enables support for systems based on the Agilent AAEC-2000
236
237config ARCH_INTEGRATOR
238 bool "ARM Ltd. Integrator family"
239 select ARM_AMBA
89c52ed4 240 select ARCH_HAS_CPUFREQ
9483a578 241 select HAVE_CLK
d72fbdf0 242 select COMMON_CLKDEV
4af6fee1
DS
243 select ICST525
244 help
245 Support for ARM's Integrator platform.
246
247config ARCH_REALVIEW
248 bool "ARM Ltd. RealView family"
249 select ARM_AMBA
9483a578 250 select HAVE_CLK
cf30fb4a 251 select COMMON_CLKDEV
4af6fee1 252 select ICST307
85802afe 253 select GENERIC_TIME
ae30ceac 254 select GENERIC_CLOCKEVENTS
eb7fffa3 255 select ARCH_WANT_OPTIONAL_GPIOLIB
b56ba8aa 256 select GPIO_PL061 if GPIOLIB
4af6fee1
DS
257 help
258 This enables support for ARM Ltd RealView boards.
259
260config ARCH_VERSATILE
261 bool "ARM Ltd. Versatile family"
262 select ARM_AMBA
263 select ARM_VIC
9483a578 264 select HAVE_CLK
71a06da0 265 select COMMON_CLKDEV
4af6fee1 266 select ICST307
b49c87c2 267 select GENERIC_TIME
89df1272 268 select GENERIC_CLOCKEVENTS
bbeddc43 269 select ARCH_WANT_OPTIONAL_GPIOLIB
4af6fee1
DS
270 help
271 This enables support for ARM Ltd Versatile board.
272
8fc5ffa0
AV
273config ARCH_AT91
274 bool "Atmel AT91"
0a938b97 275 select GENERIC_GPIO
f373e8c0 276 select ARCH_REQUIRE_GPIOLIB
93686ae8 277 select HAVE_CLK
4af6fee1 278 help
2b3b3516
AV
279 This enables support for systems based on the Atmel AT91RM9200,
280 AT91SAM9 and AT91CAP9 processors.
4af6fee1 281
ccf50e23
RK
282config ARCH_BCMRING
283 bool "Broadcom BCMRING"
284 depends on MMU
285 select CPU_V6
286 select ARM_AMBA
287 select COMMON_CLKDEV
288 select GENERIC_TIME
289 select GENERIC_CLOCKEVENTS
290 select ARCH_WANT_OPTIONAL_GPIOLIB
291 help
292 Support for Broadcom's BCMRing platform.
293
1da177e4 294config ARCH_CLPS711X
4af6fee1 295 bool "Cirrus Logic CLPS711x/EP721x-based"
c750815e 296 select CPU_ARM720T
f999b8bd
MM
297 help
298 Support for Cirrus Logic 711x/721x based boards.
1da177e4 299
788c9700
RK
300config ARCH_GEMINI
301 bool "Cortina Systems Gemini"
302 select CPU_FA526
303 select GENERIC_GPIO
304 select ARCH_REQUIRE_GPIOLIB
305 help
306 Support for the Cortina Systems Gemini family SoCs
307
1da177e4
LT
308config ARCH_EBSA110
309 bool "EBSA-110"
c750815e 310 select CPU_SA110
f7e68bbf 311 select ISA
c5eb2a2b 312 select NO_IOPORT
1da177e4
LT
313 help
314 This is an evaluation board for the StrongARM processor available
f6c8965a 315 from Digital. It has limited hardware on-board, including an
1da177e4
LT
316 Ethernet interface, two PCMCIA sockets, two serial ports and a
317 parallel port.
318
e7736d47
LB
319config ARCH_EP93XX
320 bool "EP93xx-based"
c750815e 321 select CPU_ARM920T
e7736d47
LB
322 select ARM_AMBA
323 select ARM_VIC
4e9f9fd5 324 select GENERIC_GPIO
9483a578 325 select HAVE_CLK
ae696fd5 326 select COMMON_CLKDEV
7444a72e 327 select ARCH_REQUIRE_GPIOLIB
eb33575c 328 select ARCH_HAS_HOLES_MEMORYMODEL
e7736d47
LB
329 help
330 This enables support for the Cirrus EP93xx series of CPUs.
331
1da177e4
LT
332config ARCH_FOOTBRIDGE
333 bool "FootBridge"
c750815e 334 select CPU_SA110
1da177e4 335 select FOOTBRIDGE
f999b8bd
MM
336 help
337 Support for systems based on the DC21285 companion chip
338 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1da177e4 339
788c9700
RK
340config ARCH_MXC
341 bool "Freescale MXC/iMX-based"
342 select GENERIC_TIME
343 select GENERIC_CLOCKEVENTS
788c9700 344 select ARCH_REQUIRE_GPIOLIB
a2ab67fa 345 select HAVE_CLK
03e09cd8 346 select COMMON_CLKDEV
788c9700
RK
347 help
348 Support for Freescale MXC/iMX-based family of processors
349
7bd0f2f5 350config ARCH_STMP3XXX
351 bool "Freescale STMP3xxx"
352 select CPU_ARM926T
353 select HAVE_CLK
354 select COMMON_CLKDEV
355 select ARCH_REQUIRE_GPIOLIB
356 select GENERIC_TIME
357 select GENERIC_CLOCKEVENTS
358 select GENERIC_GPIO
359 select USB_ARCH_HAS_EHCI
360 help
361 Support for systems based on the Freescale 3xxx CPUs.
362
4af6fee1
DS
363config ARCH_NETX
364 bool "Hilscher NetX based"
c750815e 365 select CPU_ARM926T
4af6fee1 366 select ARM_VIC
2fcfe6b8 367 select GENERIC_CLOCKEVENTS
21edecd3 368 select GENERIC_TIME
f999b8bd 369 help
4af6fee1
DS
370 This enables support for systems based on the Hilscher NetX Soc
371
372config ARCH_H720X
373 bool "Hynix HMS720x-based"
c750815e 374 select CPU_ARM720T
4af6fee1
DS
375 select ISA_DMA_API
376 help
377 This enables support for systems based on the Hynix HMS720x
378
3b938be6
RK
379config ARCH_IOP13XX
380 bool "IOP13xx-based"
381 depends on MMU
c750815e 382 select CPU_XSC3
3b938be6
RK
383 select PLAT_IOP
384 select PCI
385 select ARCH_SUPPORTS_MSI
8d5796d2 386 select VMSPLIT_1G
3b938be6
RK
387 help
388 Support for Intel's IOP13XX (XScale) family of processors.
389
3f7e5815
LB
390config ARCH_IOP32X
391 bool "IOP32x-based"
a4f7e763 392 depends on MMU
c750815e 393 select CPU_XSCALE
7ae1f7ec 394 select PLAT_IOP
f7e68bbf 395 select PCI
63f385cd 396 select GENERIC_GPIO
bb2b180c 397 select ARCH_REQUIRE_GPIOLIB
f999b8bd 398 help
3f7e5815
LB
399 Support for Intel's 80219 and IOP32X (XScale) family of
400 processors.
401
402config ARCH_IOP33X
403 bool "IOP33x-based"
404 depends on MMU
c750815e 405 select CPU_XSCALE
7ae1f7ec 406 select PLAT_IOP
3f7e5815 407 select PCI
63f385cd 408 select GENERIC_GPIO
bb2b180c 409 select ARCH_REQUIRE_GPIOLIB
3f7e5815
LB
410 help
411 Support for Intel's IOP33X (XScale) family of processors.
1da177e4 412
3b938be6
RK
413config ARCH_IXP23XX
414 bool "IXP23XX-based"
a4f7e763 415 depends on MMU
c750815e 416 select CPU_XSC3
3b938be6 417 select PCI
f999b8bd 418 help
3b938be6 419 Support for Intel's IXP23xx (XScale) family of processors.
1da177e4
LT
420
421config ARCH_IXP2000
422 bool "IXP2400/2800-based"
a4f7e763 423 depends on MMU
c750815e 424 select CPU_XSCALE
f7e68bbf 425 select PCI
f999b8bd
MM
426 help
427 Support for Intel's IXP2400/2800 (XScale) family of processors.
1da177e4 428
3b938be6
RK
429config ARCH_IXP4XX
430 bool "IXP4xx-based"
a4f7e763 431 depends on MMU
c750815e 432 select CPU_XSCALE
8858e9af 433 select GENERIC_GPIO
3b938be6
RK
434 select GENERIC_TIME
435 select GENERIC_CLOCKEVENTS
485bdde7 436 select DMABOUNCE if PCI
c4713074 437 help
3b938be6 438 Support for Intel's IXP4XX (XScale) family of processors.
c4713074 439
1da177e4
LT
440config ARCH_L7200
441 bool "LinkUp-L7200"
c750815e 442 select CPU_ARM720T
1da177e4
LT
443 select FIQ
444 help
445 Say Y here if you intend to run this kernel on a LinkUp Systems
446 L7200 Software Development Board which uses an ARM720T processor.
447 Information on this board can be obtained at:
448
449 <http://www.linkupsys.com/>
450
451 If you have any questions or comments about the Linux kernel port
452 to this board, send e-mail to <sjhill@cotw.com>.
453
edabd38e
SB
454config ARCH_DOVE
455 bool "Marvell Dove"
456 select PCI
457 select GENERIC_GPIO
458 select ARCH_REQUIRE_GPIOLIB
459 select GENERIC_TIME
460 select GENERIC_CLOCKEVENTS
461 select PLAT_ORION
462 help
463 Support for the Marvell Dove SoC 88AP510
464
651c74c7
SB
465config ARCH_KIRKWOOD
466 bool "Marvell Kirkwood"
c750815e 467 select CPU_FEROCEON
651c74c7 468 select PCI
4c213430 469 select GENERIC_GPIO
a8865655 470 select ARCH_REQUIRE_GPIOLIB
651c74c7
SB
471 select GENERIC_TIME
472 select GENERIC_CLOCKEVENTS
473 select PLAT_ORION
474 help
475 Support for the following Marvell Kirkwood series SoCs:
476 88F6180, 88F6192 and 88F6281.
477
777f9beb
LB
478config ARCH_LOKI
479 bool "Marvell Loki (88RC8480)"
c750815e 480 select CPU_FEROCEON
777f9beb
LB
481 select GENERIC_TIME
482 select GENERIC_CLOCKEVENTS
483 select PLAT_ORION
484 help
485 Support for the Marvell Loki (88RC8480) SoC.
486
794d15b2
SS
487config ARCH_MV78XX0
488 bool "Marvell MV78xx0"
c750815e 489 select CPU_FEROCEON
794d15b2 490 select PCI
b95a13d7 491 select GENERIC_GPIO
a8865655 492 select ARCH_REQUIRE_GPIOLIB
794d15b2
SS
493 select GENERIC_TIME
494 select GENERIC_CLOCKEVENTS
495 select PLAT_ORION
496 help
497 Support for the following Marvell MV78xx0 series SoCs:
498 MV781x0, MV782x0.
499
9dd0b194 500config ARCH_ORION5X
585cf175
TP
501 bool "Marvell Orion"
502 depends on MMU
c750815e 503 select CPU_FEROCEON
038ee083 504 select PCI
01af72e4 505 select GENERIC_GPIO
a8865655 506 select ARCH_REQUIRE_GPIOLIB
51cbff1d
TP
507 select GENERIC_TIME
508 select GENERIC_CLOCKEVENTS
69b02f6a 509 select PLAT_ORION
585cf175 510 help
9dd0b194 511 Support for the following Marvell Orion 5x series SoCs:
d2b2a6bb 512 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
d323ade1 513 Orion-2 (5281), Orion-1-90 (6183).
585cf175 514
788c9700 515config ARCH_MMP
2f7e8fae 516 bool "Marvell PXA168/910/MMP2"
788c9700
RK
517 depends on MMU
518 select GENERIC_GPIO
519 select ARCH_REQUIRE_GPIOLIB
520 select HAVE_CLK
521 select COMMON_CLKDEV
522 select GENERIC_TIME
523 select GENERIC_CLOCKEVENTS
524 select TICK_ONESHOT
525 select PLAT_PXA
526 help
2f7e8fae 527 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
788c9700
RK
528
529config ARCH_KS8695
530 bool "Micrel/Kendin KS8695"
531 select CPU_ARM922T
532 select GENERIC_GPIO
533 select ARCH_REQUIRE_GPIOLIB
534 help
535 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
536 System-on-Chip devices.
537
538config ARCH_NS9XXX
539 bool "NetSilicon NS9xxx"
540 select CPU_ARM926T
541 select GENERIC_GPIO
542 select GENERIC_TIME
543 select GENERIC_CLOCKEVENTS
544 select HAVE_CLK
545 help
546 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
547 System.
548
549 <http://www.digi.com/products/microprocessors/index.jsp>
550
551config ARCH_W90X900
552 bool "Nuvoton W90X900 CPU"
553 select CPU_ARM926T
c52d3d68 554 select ARCH_REQUIRE_GPIOLIB
555 select GENERIC_GPIO
d2c24195 556 select HAVE_CLK
0e4a34bb 557 select COMMON_CLKDEV
58b5369e 558 select GENERIC_TIME
559 select GENERIC_CLOCKEVENTS
788c9700 560 help
a8bc4ead 561 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
562 At present, the w90x900 has been renamed nuc900, regarding
563 the ARM series product line, you can login the following
564 link address to know more.
565
566 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
567 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
788c9700 568
a62e9030 569config ARCH_NUC93X
570 bool "Nuvoton NUC93X CPU"
571 select CPU_ARM926T
572 select HAVE_CLK
573 select COMMON_CLKDEV
574 help
575 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
576 low-power and high performance MPEG-4/JPEG multimedia controller chip.
577
4af6fee1
DS
578config ARCH_PNX4008
579 bool "Philips Nexperia PNX4008 Mobile"
c750815e 580 select CPU_ARM926T
9483a578 581 select HAVE_CLK
6985a5ad 582 select COMMON_CLKDEV
4af6fee1
DS
583 help
584 This enables support for Philips PNX4008 mobile platform.
585
1da177e4 586config ARCH_PXA
2c8086a5 587 bool "PXA2xx/PXA3xx-based"
a4f7e763 588 depends on MMU
034d2f5a 589 select ARCH_MTD_XIP
89c52ed4 590 select ARCH_HAS_CPUFREQ
0a938b97 591 select GENERIC_GPIO
9483a578 592 select HAVE_CLK
8c3abc7d 593 select COMMON_CLKDEV
7444a72e 594 select ARCH_REQUIRE_GPIOLIB
45cf5eef 595 select GENERIC_TIME
981d0f39 596 select GENERIC_CLOCKEVENTS
a88264c2 597 select TICK_ONESHOT
bd5ce433 598 select PLAT_PXA
f999b8bd 599 help
2c8086a5 600 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
1da177e4 601
788c9700
RK
602config ARCH_MSM
603 bool "Qualcomm MSM"
604 select CPU_V6
49cbe786
EM
605 select GENERIC_TIME
606 select GENERIC_CLOCKEVENTS
49cbe786 607 help
788c9700
RK
608 Support for Qualcomm MSM7K based systems. This runs on the ARM11
609 apps processor of the MSM7K and depends on a shared memory
610 interface to the ARM9 modem processor which runs the baseband stack
611 and controls some vital subsystems (clock and power control, etc).
49cbe786 612
c793c1b0
MD
613config ARCH_SHMOBILE
614 bool "Renesas SH-Mobile"
615 help
616 Support for Renesas's SH-Mobile ARM platforms
617
1da177e4
LT
618config ARCH_RPC
619 bool "RiscPC"
620 select ARCH_ACORN
621 select FIQ
622 select TIMER_ACORN
a08b6b79 623 select ARCH_MAY_HAVE_PC_FDC
341eb781 624 select HAVE_PATA_PLATFORM
065909b9 625 select ISA_DMA_API
5ea81769 626 select NO_IOPORT
07f841b7 627 select ARCH_SPARSEMEM_ENABLE
1da177e4
LT
628 help
629 On the Acorn Risc-PC, Linux can support the internal IDE disk and
630 CD-ROM interface, serial and parallel port, and the floppy drive.
631
632config ARCH_SA1100
633 bool "SA1100-based"
c750815e 634 select CPU_SA1100
f7e68bbf 635 select ISA
05944d74 636 select ARCH_SPARSEMEM_ENABLE
034d2f5a 637 select ARCH_MTD_XIP
89c52ed4 638 select ARCH_HAS_CPUFREQ
1937f5b9 639 select CPU_FREQ
0a938b97 640 select GENERIC_GPIO
d142b6e7 641 select GENERIC_TIME
3e238be2 642 select GENERIC_CLOCKEVENTS
9483a578 643 select HAVE_CLK
3e238be2 644 select TICK_ONESHOT
7444a72e 645 select ARCH_REQUIRE_GPIOLIB
f999b8bd
MM
646 help
647 Support for StrongARM 11x0 based boards.
1da177e4
LT
648
649config ARCH_S3C2410
63b1f51b 650 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
0a938b97 651 select GENERIC_GPIO
9d56c02a 652 select ARCH_HAS_CPUFREQ
9483a578 653 select HAVE_CLK
1da177e4
LT
654 help
655 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
656 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
f6c8965a 657 the Samsung SMDK2410 development board (and derivatives).
1da177e4 658
63b1f51b
BD
659 Note, the S3C2416 and the S3C2450 are so close that they even share
660 the same SoC ID code. This means that there is no seperate machine
661 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
662
a08ab637
BD
663config ARCH_S3C64XX
664 bool "Samsung S3C64XX"
89f1fa08 665 select PLAT_SAMSUNG
89f0ce72 666 select CPU_V6
a08ab637 667 select GENERIC_GPIO
89f0ce72 668 select ARM_VIC
a08ab637 669 select HAVE_CLK
89f0ce72 670 select NO_IOPORT
89c52ed4 671 select ARCH_HAS_CPUFREQ
89f0ce72
BD
672 select ARCH_REQUIRE_GPIOLIB
673 select SAMSUNG_CLKSRC
674 select SAMSUNG_IRQ_VIC_TIMER
675 select SAMSUNG_IRQ_UART
676 select S3C_GPIO_TRACK
677 select S3C_GPIO_PULL_UPDOWN
678 select S3C_GPIO_CFG_S3C24XX
679 select S3C_GPIO_CFG_S3C64XX
680 select S3C_DEV_NAND
681 select USB_ARCH_HAS_OHCI
682 select SAMSUNG_GPIOLIB_4BIT
a08ab637
BD
683 help
684 Samsung S3C64XX series based systems
685
c4ffccdd
KK
686config ARCH_S5P6440
687 bool "Samsung S5P6440"
688 select CPU_V6
689 select GENERIC_GPIO
690 select HAVE_CLK
925c68cd 691 select ARCH_USES_GETTIMEOFFSET
c4ffccdd
KK
692 help
693 Samsung S5P6440 CPU based systems
694
550db7f1
KK
695config ARCH_S5P6442
696 bool "Samsung S5P6442"
697 select CPU_V6
698 select GENERIC_GPIO
699 select HAVE_CLK
925c68cd 700 select ARCH_USES_GETTIMEOFFSET
550db7f1
KK
701 help
702 Samsung S5P6442 CPU based systems
703
acc84707
MS
704config ARCH_S5PC100
705 bool "Samsung S5PC100"
5a7652f2
BM
706 select GENERIC_GPIO
707 select HAVE_CLK
708 select CPU_V7
d6d502fa 709 select ARM_L1_CACHE_SHIFT_6
925c68cd 710 select ARCH_USES_GETTIMEOFFSET
5a7652f2 711 help
acc84707 712 Samsung S5PC100 series based systems
5a7652f2 713
170f4e42
KK
714config ARCH_S5PV210
715 bool "Samsung S5PV210/S5PC110"
716 select CPU_V7
717 select GENERIC_GPIO
718 select HAVE_CLK
719 select ARM_L1_CACHE_SHIFT_6
925c68cd 720 select ARCH_USES_GETTIMEOFFSET
170f4e42
KK
721 help
722 Samsung S5PV210/S5PC110 series based systems
723
1da177e4
LT
724config ARCH_SHARK
725 bool "Shark"
c750815e 726 select CPU_SA110
f7e68bbf
RK
727 select ISA
728 select ISA_DMA
3bca103a 729 select ZONE_DMA
f7e68bbf 730 select PCI
f999b8bd
MM
731 help
732 Support for the StrongARM based Digital DNARD machine, also known
733 as "Shark" (<http://www.shark-linux.de/shark.html>).
1da177e4
LT
734
735config ARCH_LH7A40X
736 bool "Sharp LH7A40X"
c750815e 737 select CPU_ARM922T
4ba3f7c5
RK
738 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
739 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
1da177e4
LT
740 help
741 Say Y here for systems based on one of the Sharp LH7A40X
742 System on a Chip processors. These CPUs include an ARM922T
743 core with a wide array of integrated devices for
744 hand-held and low-power applications.
745
d98aac75
LW
746config ARCH_U300
747 bool "ST-Ericsson U300 Series"
748 depends on MMU
749 select CPU_ARM926T
bc581770 750 select HAVE_TCM
d98aac75
LW
751 select ARM_AMBA
752 select ARM_VIC
753 select GENERIC_TIME
754 select GENERIC_CLOCKEVENTS
755 select HAVE_CLK
756 select COMMON_CLKDEV
757 select GENERIC_GPIO
758 help
759 Support for ST-Ericsson U300 series mobile platforms.
760
ccf50e23
RK
761config ARCH_U8500
762 bool "ST-Ericsson U8500 Series"
763 select CPU_V7
764 select ARM_AMBA
765 select GENERIC_TIME
766 select GENERIC_CLOCKEVENTS
767 select COMMON_CLKDEV
768 help
769 Support for ST-Ericsson's Ux500 architecture
770
771config ARCH_NOMADIK
772 bool "STMicroelectronics Nomadik"
773 select ARM_AMBA
774 select ARM_VIC
775 select CPU_ARM926T
776 select HAVE_CLK
777 select COMMON_CLKDEV
778 select GENERIC_TIME
779 select GENERIC_CLOCKEVENTS
780 select GENERIC_GPIO
781 select ARCH_REQUIRE_GPIOLIB
782 help
783 Support for the Nomadik platform by ST-Ericsson
784
7c6337e2
KH
785config ARCH_DAVINCI
786 bool "TI DaVinci"
c750815e 787 select CPU_ARM926T
7c6337e2
KH
788 select GENERIC_TIME
789 select GENERIC_CLOCKEVENTS
3d9edf09 790 select GENERIC_GPIO
dce1115b 791 select ARCH_REQUIRE_GPIOLIB
9483a578 792 select HAVE_CLK
3bca103a 793 select ZONE_DMA
9232fcc9 794 select HAVE_IDE
c5b736d0 795 select COMMON_CLKDEV
20e9969b 796 select GENERIC_ALLOCATOR
ae88e05a 797 select ARCH_HAS_HOLES_MEMORYMODEL
7c6337e2
KH
798 help
799 Support for TI's DaVinci platform.
800
3b938be6
RK
801config ARCH_OMAP
802 bool "TI OMAP"
803 select GENERIC_GPIO
9483a578 804 select HAVE_CLK
7444a72e 805 select ARCH_REQUIRE_GPIOLIB
89c52ed4 806 select ARCH_HAS_CPUFREQ
3b938be6 807 select GENERIC_TIME
06cad098 808 select GENERIC_CLOCKEVENTS
9af915da 809 select ARCH_HAS_HOLES_MEMORYMODEL
3b938be6
RK
810 help
811 Support for TI's OMAP platform (OMAP1 and OMAP2).
812
1da177e4
LT
813endchoice
814
ccf50e23
RK
815#
816# This is sorted alphabetically by mach-* pathname. However, plat-*
817# Kconfigs may be included either alphabetically (according to the
818# plat- suffix) or along side the corresponding mach-* source.
819#
95b8f20f
RK
820source "arch/arm/mach-aaec2000/Kconfig"
821
822source "arch/arm/mach-at91/Kconfig"
823
824source "arch/arm/mach-bcmring/Kconfig"
825
1da177e4
LT
826source "arch/arm/mach-clps711x/Kconfig"
827
95b8f20f
RK
828source "arch/arm/mach-davinci/Kconfig"
829
830source "arch/arm/mach-dove/Kconfig"
831
e7736d47
LB
832source "arch/arm/mach-ep93xx/Kconfig"
833
1da177e4
LT
834source "arch/arm/mach-footbridge/Kconfig"
835
59d3a193
PZ
836source "arch/arm/mach-gemini/Kconfig"
837
95b8f20f
RK
838source "arch/arm/mach-h720x/Kconfig"
839
1da177e4
LT
840source "arch/arm/mach-integrator/Kconfig"
841
3f7e5815
LB
842source "arch/arm/mach-iop32x/Kconfig"
843
844source "arch/arm/mach-iop33x/Kconfig"
1da177e4 845
285f5fa7
DW
846source "arch/arm/mach-iop13xx/Kconfig"
847
1da177e4
LT
848source "arch/arm/mach-ixp4xx/Kconfig"
849
850source "arch/arm/mach-ixp2000/Kconfig"
851
c4713074
LB
852source "arch/arm/mach-ixp23xx/Kconfig"
853
95b8f20f
RK
854source "arch/arm/mach-kirkwood/Kconfig"
855
856source "arch/arm/mach-ks8695/Kconfig"
857
858source "arch/arm/mach-lh7a40x/Kconfig"
859
777f9beb
LB
860source "arch/arm/mach-loki/Kconfig"
861
95b8f20f
RK
862source "arch/arm/mach-msm/Kconfig"
863
794d15b2
SS
864source "arch/arm/mach-mv78xx0/Kconfig"
865
95b8f20f 866source "arch/arm/plat-mxc/Kconfig"
1da177e4 867
95b8f20f 868source "arch/arm/mach-netx/Kconfig"
49cbe786 869
95b8f20f
RK
870source "arch/arm/mach-nomadik/Kconfig"
871source "arch/arm/plat-nomadik/Kconfig"
872
873source "arch/arm/mach-ns9xxx/Kconfig"
1da177e4 874
186f93ea 875source "arch/arm/mach-nuc93x/Kconfig"
1da177e4 876
d48af15e
TL
877source "arch/arm/plat-omap/Kconfig"
878
879source "arch/arm/mach-omap1/Kconfig"
1da177e4 880
1dbae815
TL
881source "arch/arm/mach-omap2/Kconfig"
882
9dd0b194 883source "arch/arm/mach-orion5x/Kconfig"
585cf175 884
95b8f20f
RK
885source "arch/arm/mach-pxa/Kconfig"
886source "arch/arm/plat-pxa/Kconfig"
585cf175 887
95b8f20f
RK
888source "arch/arm/mach-mmp/Kconfig"
889
890source "arch/arm/mach-realview/Kconfig"
891
892source "arch/arm/mach-sa1100/Kconfig"
edabd38e 893
cf383678 894source "arch/arm/plat-samsung/Kconfig"
a21765a7 895source "arch/arm/plat-s3c24xx/Kconfig"
c4ffccdd 896source "arch/arm/plat-s5p/Kconfig"
a21765a7
BD
897
898if ARCH_S3C2410
899source "arch/arm/mach-s3c2400/Kconfig"
1da177e4 900source "arch/arm/mach-s3c2410/Kconfig"
a21765a7 901source "arch/arm/mach-s3c2412/Kconfig"
f1290a49 902source "arch/arm/mach-s3c2416/Kconfig"
a21765a7 903source "arch/arm/mach-s3c2440/Kconfig"
e4d06e39 904source "arch/arm/mach-s3c2443/Kconfig"
a21765a7 905endif
1da177e4 906
a08ab637 907if ARCH_S3C64XX
431107ea 908source "arch/arm/mach-s3c64xx/Kconfig"
a08ab637
BD
909endif
910
c4ffccdd
KK
911source "arch/arm/mach-s5p6440/Kconfig"
912
550db7f1 913source "arch/arm/mach-s5p6442/Kconfig"
7bd0f2f5 914
5a7652f2 915source "arch/arm/mach-s5pc100/Kconfig"
5a7652f2 916
170f4e42
KK
917source "arch/arm/mach-s5pv210/Kconfig"
918
882d01f9 919source "arch/arm/mach-shmobile/Kconfig"
52c543f9 920
882d01f9 921source "arch/arm/plat-stmp3xxx/Kconfig"
9e73c84c 922
95b8f20f 923source "arch/arm/mach-u300/Kconfig"
1da177e4 924
95b8f20f 925source "arch/arm/mach-ux500/Kconfig"
1da177e4
LT
926
927source "arch/arm/mach-versatile/Kconfig"
928
7ec80ddf 929source "arch/arm/mach-w90x900/Kconfig"
930
1da177e4
LT
931# Definitions to make life easier
932config ARCH_ACORN
933 bool
934
7ae1f7ec
LB
935config PLAT_IOP
936 bool
469d3044 937 select GENERIC_CLOCKEVENTS
980f2296 938 select GENERIC_TIME
7ae1f7ec 939
69b02f6a
LB
940config PLAT_ORION
941 bool
942
bd5ce433
EM
943config PLAT_PXA
944 bool
945
1da177e4
LT
946source arch/arm/mm/Kconfig
947
afe4b25e
LB
948config IWMMXT
949 bool "Enable iWMMXt support"
40305a58
EM
950 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
951 default y if PXA27x || PXA3xx || ARCH_MMP
afe4b25e
LB
952 help
953 Enable support for iWMMXt context switching at run time if
954 running on a CPU that supports it.
955
1da177e4
LT
956# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
957config XSCALE_PMU
958 bool
959 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
960 default y
961
0f4f0672
JI
962config CPU_HAS_PMU
963 depends on CPU_V6 || CPU_V7 || XSCALE_PMU
964 default y
965 bool
966
3b93e7b0
HC
967if !MMU
968source "arch/arm/Kconfig-nommu"
969endif
970
9cba3ccc
CM
971config ARM_ERRATA_411920
972 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
973 depends on CPU_V6 && !SMP
974 help
975 Invalidation of the Instruction Cache operation can
976 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
977 It does not affect the MPCore. This option enables the ARM Ltd.
978 recommended workaround.
979
7ce236fc
CM
980config ARM_ERRATA_430973
981 bool "ARM errata: Stale prediction on replaced interworking branch"
982 depends on CPU_V7
983 help
984 This option enables the workaround for the 430973 Cortex-A8
985 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
986 interworking branch is replaced with another code sequence at the
987 same virtual address, whether due to self-modifying code or virtual
988 to physical address re-mapping, Cortex-A8 does not recover from the
989 stale interworking branch prediction. This results in Cortex-A8
990 executing the new code sequence in the incorrect ARM or Thumb state.
991 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
992 and also flushes the branch target cache at every context switch.
993 Note that setting specific bits in the ACTLR register may not be
994 available in non-secure mode.
995
855c551f
CM
996config ARM_ERRATA_458693
997 bool "ARM errata: Processor deadlock when a false hazard is created"
998 depends on CPU_V7
999 help
1000 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1001 erratum. For very specific sequences of memory operations, it is
1002 possible for a hazard condition intended for a cache line to instead
1003 be incorrectly associated with a different cache line. This false
1004 hazard might then cause a processor deadlock. The workaround enables
1005 the L1 caching of the NEON accesses and disables the PLD instruction
1006 in the ACTLR register. Note that setting specific bits in the ACTLR
1007 register may not be available in non-secure mode.
1008
0516e464
CM
1009config ARM_ERRATA_460075
1010 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1011 depends on CPU_V7
1012 help
1013 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1014 erratum. Any asynchronous access to the L2 cache may encounter a
1015 situation in which recent store transactions to the L2 cache are lost
1016 and overwritten with stale memory contents from external memory. The
1017 workaround disables the write-allocate mode for the L2 cache via the
1018 ACTLR register. Note that setting specific bits in the ACTLR register
1019 may not be available in non-secure mode.
1020
9e65582a
SS
1021config PL310_ERRATA_588369
1022 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1023 depends on CACHE_L2X0 && ARCH_OMAP4
1024 help
1025 The PL310 L2 cache controller implements three types of Clean &
1026 Invalidate maintenance operations: by Physical Address
1027 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1028 They are architecturally defined to behave as the execution of a
1029 clean operation followed immediately by an invalidate operation,
1030 both performing to the same memory location. This functionality
1031 is not correctly implemented in PL310 as clean lines are not
1032 invalidated as a result of these operations. Note that this errata
1033 uses Texas Instrument's secure monitor api.
1da177e4
LT
1034endmenu
1035
1036source "arch/arm/common/Kconfig"
1037
1038config FORCE_MAX_ZONEORDER
1039 int
1040 depends on SA1111
1041 default "9"
1042
1043menu "Bus support"
1044
1045config ARM_AMBA
1046 bool
1047
1048config ISA
1049 bool
1da177e4
LT
1050 help
1051 Find out whether you have ISA slots on your motherboard. ISA is the
1052 name of a bus system, i.e. the way the CPU talks to the other stuff
1053 inside your box. Other bus systems are PCI, EISA, MicroChannel
1054 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1055 newer boards don't support it. If you have ISA, say Y, otherwise N.
1056
065909b9 1057# Select ISA DMA controller support
1da177e4
LT
1058config ISA_DMA
1059 bool
065909b9 1060 select ISA_DMA_API
1da177e4 1061
065909b9 1062# Select ISA DMA interface
5cae841b
AV
1063config ISA_DMA_API
1064 bool
5cae841b 1065
1da177e4 1066config PCI
a0113a99 1067 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
1da177e4
LT
1068 help
1069 Find out whether you have a PCI motherboard. PCI is the name of a
1070 bus system, i.e. the way the CPU talks to the other stuff inside
1071 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1072 VESA. If you have PCI, say Y, otherwise N.
1073
36e23590
MW
1074config PCI_SYSCALL
1075 def_bool PCI
1076
1da177e4
LT
1077# Select the host bridge type
1078config PCI_HOST_VIA82C505
1079 bool
1080 depends on PCI && ARCH_SHARK
1081 default y
1082
a0113a99
MR
1083config PCI_HOST_ITE8152
1084 bool
1085 depends on PCI && MACH_ARMCORE
1086 default y
1087 select DMABOUNCE
1088
1da177e4
LT
1089source "drivers/pci/Kconfig"
1090
1091source "drivers/pcmcia/Kconfig"
1092
1093endmenu
1094
1095menu "Kernel Features"
1096
0567a0c0
KH
1097source "kernel/time/Kconfig"
1098
1da177e4
LT
1099config SMP
1100 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
42578c82 1101 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
850265e8 1102 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
bc28248e 1103 depends on GENERIC_CLOCKEVENTS
f6dd9fa5 1104 select USE_GENERIC_SMP_HELPERS
850265e8 1105 select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
1da177e4
LT
1106 help
1107 This enables support for systems with more than one CPU. If you have
1108 a system with only one CPU, like most personal computers, say N. If
1109 you have a system with more than one CPU, say Y.
1110
1111 If you say N here, the kernel will run on single and multiprocessor
1112 machines, but will use only one CPU of a multiprocessor machine. If
1113 you say Y here, the kernel will run on many, but not all, single
1114 processor machines. On a single processor machine, the kernel will
1115 run faster if you say N here.
1116
03502faa 1117 See also <file:Documentation/i386/IO-APIC.txt>,
1da177e4
LT
1118 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1119 <http://www.linuxdoc.org/docs.html#howto>.
1120
1121 If you don't know what to do here, say N.
1122
a8cbcd92
RK
1123config HAVE_ARM_SCU
1124 bool
1125 depends on SMP
1126 help
1127 This option enables support for the ARM system coherency unit
1128
f32f4ce2
RK
1129config HAVE_ARM_TWD
1130 bool
1131 depends on SMP
1132 help
1133 This options enables support for the ARM timer and watchdog unit
1134
8d5796d2
LB
1135choice
1136 prompt "Memory split"
1137 default VMSPLIT_3G
1138 help
1139 Select the desired split between kernel and user memory.
1140
1141 If you are not absolutely sure what you are doing, leave this
1142 option alone!
1143
1144 config VMSPLIT_3G
1145 bool "3G/1G user/kernel split"
1146 config VMSPLIT_2G
1147 bool "2G/2G user/kernel split"
1148 config VMSPLIT_1G
1149 bool "1G/3G user/kernel split"
1150endchoice
1151
1152config PAGE_OFFSET
1153 hex
1154 default 0x40000000 if VMSPLIT_1G
1155 default 0x80000000 if VMSPLIT_2G
1156 default 0xC0000000
1157
1da177e4
LT
1158config NR_CPUS
1159 int "Maximum number of CPUs (2-32)"
1160 range 2 32
1161 depends on SMP
1162 default "4"
1163
a054a811
RK
1164config HOTPLUG_CPU
1165 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1166 depends on SMP && HOTPLUG && EXPERIMENTAL
1167 help
1168 Say Y here to experiment with turning CPUs off and on. CPUs
1169 can be controlled through /sys/devices/system/cpu.
1170
37ee16ae
RK
1171config LOCAL_TIMERS
1172 bool "Use local timer interrupts"
42578c82 1173 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
850265e8 1174 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
37ee16ae 1175 default y
850265e8 1176 select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
37ee16ae
RK
1177 help
1178 Enable support for local timers on SMP platforms, rather then the
1179 legacy IPI broadcast method. Local timers allows the system
1180 accounting to be spread across the timer interval, preventing a
1181 "thundering herd" at every timer tick.
1182
d45a398f 1183source kernel/Kconfig.preempt
1da177e4 1184
f8065813
RK
1185config HZ
1186 int
1187 default 128 if ARCH_L7200
170f4e42 1188 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
bfe65704 1189 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
5248c657 1190 default AT91_TIMER_HZ if ARCH_AT91
f8065813
RK
1191 default 100
1192
16c79651
CM
1193config THUMB2_KERNEL
1194 bool "Compile the kernel in Thumb-2 mode"
1195 depends on CPU_V7 && EXPERIMENTAL
1196 select AEABI
1197 select ARM_ASM_UNIFIED
1198 help
1199 By enabling this option, the kernel will be compiled in
1200 Thumb-2 mode. A compiler/assembler that understand the unified
1201 ARM-Thumb syntax is needed.
1202
1203 If unsure, say N.
1204
0becb088
CM
1205config ARM_ASM_UNIFIED
1206 bool
1207
704bdda0
NP
1208config AEABI
1209 bool "Use the ARM EABI to compile the kernel"
1210 help
1211 This option allows for the kernel to be compiled using the latest
1212 ARM ABI (aka EABI). This is only useful if you are using a user
1213 space environment that is also compiled with EABI.
1214
1215 Since there are major incompatibilities between the legacy ABI and
1216 EABI, especially with regard to structure member alignment, this
1217 option also changes the kernel syscall calling convention to
1218 disambiguate both ABIs and allow for backward compatibility support
1219 (selected with CONFIG_OABI_COMPAT).
1220
1221 To use this you need GCC version 4.0.0 or later.
1222
6c90c872 1223config OABI_COMPAT
a73a3ff1 1224 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
61c484d4 1225 depends on AEABI && EXPERIMENTAL
6c90c872
NP
1226 default y
1227 help
1228 This option preserves the old syscall interface along with the
1229 new (ARM EABI) one. It also provides a compatibility layer to
1230 intercept syscalls that have structure arguments which layout
1231 in memory differs between the legacy ABI and the new ARM EABI
1232 (only for non "thumb" binaries). This option adds a tiny
1233 overhead to all syscalls and produces a slightly larger kernel.
1234 If you know you'll be using only pure EABI user space then you
1235 can say N here. If this option is not selected and you attempt
1236 to execute a legacy ABI binary then the result will be
1237 UNPREDICTABLE (in fact it can be predicted that it won't work
1238 at all). If in doubt say Y.
1239
eb33575c 1240config ARCH_HAS_HOLES_MEMORYMODEL
e80d6a24 1241 bool
e80d6a24 1242
07a2f737 1243# Discontigmem is deprecated
3f22ab27 1244config ARCH_DISCONTIGMEM_ENABLE
1da177e4 1245 bool
1da177e4 1246
05944d74
RK
1247config ARCH_SPARSEMEM_ENABLE
1248 bool
1249
07a2f737
RK
1250config ARCH_SPARSEMEM_DEFAULT
1251 def_bool ARCH_SPARSEMEM_ENABLE
1252
05944d74 1253config ARCH_SELECT_MEMORY_MODEL
07a2f737 1254 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
05944d74 1255
c80d79d7
YG
1256config NODES_SHIFT
1257 int
1258 default "4" if ARCH_LH7A40X
1259 default "2"
1260 depends on NEED_MULTIPLE_NODES
1261
053a96ca
NP
1262config HIGHMEM
1263 bool "High Memory Support (EXPERIMENTAL)"
1264 depends on MMU && EXPERIMENTAL
1265 help
1266 The address space of ARM processors is only 4 Gigabytes large
1267 and it has to accommodate user address space, kernel address
1268 space as well as some memory mapped IO. That means that, if you
1269 have a large amount of physical memory and/or IO, not all of the
1270 memory can be "permanently mapped" by the kernel. The physical
1271 memory that is not permanently mapped is called "high memory".
1272
1273 Depending on the selected kernel/user memory split, minimum
1274 vmalloc space and actual amount of RAM, you may not need this
1275 option which should result in a slightly faster kernel.
1276
1277 If unsure, say n.
1278
65cec8e3
RK
1279config HIGHPTE
1280 bool "Allocate 2nd-level pagetables from highmem"
1281 depends on HIGHMEM
1282 depends on !OUTER_CACHE
1283
1b8873a0
JI
1284config HW_PERF_EVENTS
1285 bool "Enable hardware performance counter support for perf events"
796d1295 1286 depends on PERF_EVENTS && CPU_HAS_PMU && (CPU_V6 || CPU_V7)
1b8873a0
JI
1287 default y
1288 help
1289 Enable hardware performance counter support for perf events. If
1290 disabled, perf events will use software events only.
1291
3f22ab27
DH
1292source "mm/Kconfig"
1293
1da177e4
LT
1294config LEDS
1295 bool "Timer and CPU usage LEDs"
e055d5bf 1296 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
8c8fdbc9 1297 ARCH_EBSA285 || ARCH_INTEGRATOR || \
1da177e4
LT
1298 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1299 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
73a59c1c 1300 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
25329671 1301 ARCH_AT91 || ARCH_DAVINCI || \
ff3042fb 1302 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1da177e4
LT
1303 help
1304 If you say Y here, the LEDs on your machine will be used
1305 to provide useful information about your current system status.
1306
1307 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1308 be able to select which LEDs are active using the options below. If
1309 you are compiling a kernel for the EBSA-110 or the LART however, the
1310 red LED will simply flash regularly to indicate that the system is
1311 still functional. It is safe to say Y here if you have a CATS
1312 system, but the driver will do nothing.
1313
1314config LEDS_TIMER
1315 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
eebdf7d7
DB
1316 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1317 || MACH_OMAP_PERSEUS2
1da177e4 1318 depends on LEDS
0567a0c0 1319 depends on !GENERIC_CLOCKEVENTS
1da177e4
LT
1320 default y if ARCH_EBSA110
1321 help
1322 If you say Y here, one of the system LEDs (the green one on the
1323 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1324 will flash regularly to indicate that the system is still
1325 operational. This is mainly useful to kernel hackers who are
1326 debugging unstable kernels.
1327
1328 The LART uses the same LED for both Timer LED and CPU usage LED
1329 functions. You may choose to use both, but the Timer LED function
1330 will overrule the CPU usage LED.
1331
1332config LEDS_CPU
1333 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
eebdf7d7
DB
1334 !ARCH_OMAP) \
1335 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1336 || MACH_OMAP_PERSEUS2
1da177e4
LT
1337 depends on LEDS
1338 help
1339 If you say Y here, the red LED will be used to give a good real
1340 time indication of CPU usage, by lighting whenever the idle task
1341 is not currently executing.
1342
1343 The LART uses the same LED for both Timer LED and CPU usage LED
1344 functions. You may choose to use both, but the Timer LED function
1345 will overrule the CPU usage LED.
1346
1347config ALIGNMENT_TRAP
1348 bool
f12d0d7c 1349 depends on CPU_CP15_MMU
1da177e4 1350 default y if !ARCH_EBSA110
e119bfff 1351 select HAVE_PROC_CPU if PROC_FS
1da177e4 1352 help
84eb8d06 1353 ARM processors cannot fetch/store information which is not
1da177e4
LT
1354 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1355 address divisible by 4. On 32-bit ARM processors, these non-aligned
1356 fetch/store instructions will be emulated in software if you say
1357 here, which has a severe performance impact. This is necessary for
1358 correct operation of some network protocols. With an IP-only
1359 configuration it is safe to say N, otherwise say Y.
1360
39ec58f3
LB
1361config UACCESS_WITH_MEMCPY
1362 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1363 depends on MMU && EXPERIMENTAL
1364 default y if CPU_FEROCEON
1365 help
1366 Implement faster copy_to_user and clear_user methods for CPU
1367 cores where a 8-word STM instruction give significantly higher
1368 memory write throughput than a sequence of individual 32bit stores.
1369
1370 A possible side effect is a slight increase in scheduling latency
1371 between threads sharing the same address space if they invoke
1372 such copy operations with large buffers.
1373
1374 However, if the CPU data cache is using a write-allocate mode,
1375 this option is unlikely to provide any performance gain.
1376
1da177e4
LT
1377endmenu
1378
1379menu "Boot options"
1380
1381# Compressed boot loader in ROM. Yes, we really want to ask about
1382# TEXT and BSS so we preserve their values in the config files.
1383config ZBOOT_ROM_TEXT
1384 hex "Compressed ROM boot loader base address"
1385 default "0"
1386 help
1387 The physical address at which the ROM-able zImage is to be
1388 placed in the target. Platforms which normally make use of
1389 ROM-able zImage formats normally set this to a suitable
1390 value in their defconfig file.
1391
1392 If ZBOOT_ROM is not enabled, this has no effect.
1393
1394config ZBOOT_ROM_BSS
1395 hex "Compressed ROM boot loader BSS address"
1396 default "0"
1397 help
f8c440b2
DF
1398 The base address of an area of read/write memory in the target
1399 for the ROM-able zImage which must be available while the
1400 decompressor is running. It must be large enough to hold the
1401 entire decompressed kernel plus an additional 128 KiB.
1402 Platforms which normally make use of ROM-able zImage formats
1403 normally set this to a suitable value in their defconfig file.
1da177e4
LT
1404
1405 If ZBOOT_ROM is not enabled, this has no effect.
1406
1407config ZBOOT_ROM
1408 bool "Compressed boot loader in ROM/flash"
1409 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1410 help
1411 Say Y here if you intend to execute your compressed kernel image
1412 (zImage) directly from ROM or flash. If unsure, say N.
1413
1414config CMDLINE
1415 string "Default kernel command string"
1416 default ""
1417 help
1418 On some architectures (EBSA110 and CATS), there is currently no way
1419 for the boot loader to pass arguments to the kernel. For these
1420 architectures, you should supply some command-line options at build
1421 time by entering them here. As a minimum, you should specify the
1422 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1423
1424config XIP_KERNEL
1425 bool "Kernel Execute-In-Place from ROM"
1426 depends on !ZBOOT_ROM
1427 help
1428 Execute-In-Place allows the kernel to run from non-volatile storage
1429 directly addressable by the CPU, such as NOR flash. This saves RAM
1430 space since the text section of the kernel is not loaded from flash
1431 to RAM. Read-write sections, such as the data section and stack,
1432 are still copied to RAM. The XIP kernel is not compressed since
1433 it has to run directly from flash, so it will take more space to
1434 store it. The flash address used to link the kernel object files,
1435 and for storing it, is configuration dependent. Therefore, if you
1436 say Y here, you must know the proper physical address where to
1437 store the kernel image depending on your own flash memory usage.
1438
1439 Also note that the make target becomes "make xipImage" rather than
1440 "make zImage" or "make Image". The final kernel binary to put in
1441 ROM memory will be arch/arm/boot/xipImage.
1442
1443 If unsure, say N.
1444
1445config XIP_PHYS_ADDR
1446 hex "XIP Kernel Physical Location"
1447 depends on XIP_KERNEL
1448 default "0x00080000"
1449 help
1450 This is the physical address in your flash memory the kernel will
1451 be linked for and stored to. This address is dependent on your
1452 own flash usage.
1453
c587e4a6
RP
1454config KEXEC
1455 bool "Kexec system call (EXPERIMENTAL)"
1456 depends on EXPERIMENTAL
1457 help
1458 kexec is a system call that implements the ability to shutdown your
1459 current kernel, and to start another kernel. It is like a reboot
01dd2fbf 1460 but it is independent of the system firmware. And like a reboot
c587e4a6
RP
1461 you can start any kernel with it, not just Linux.
1462
1463 It is an ongoing process to be certain the hardware in a machine
1464 is properly shutdown, so do not be surprised if this code does not
1465 initially work for you. It may help to enable device hotplugging
1466 support.
1467
4cd9d6f7
RP
1468config ATAGS_PROC
1469 bool "Export atags in procfs"
b98d7291
UL
1470 depends on KEXEC
1471 default y
4cd9d6f7
RP
1472 help
1473 Should the atags used to boot the kernel be exported in an "atags"
1474 file in procfs. Useful with kexec.
1475
1da177e4
LT
1476endmenu
1477
ac9d7efc 1478menu "CPU Power Management"
1da177e4 1479
89c52ed4 1480if ARCH_HAS_CPUFREQ
1da177e4
LT
1481
1482source "drivers/cpufreq/Kconfig"
1483
1484config CPU_FREQ_SA1100
1485 bool
1da177e4
LT
1486
1487config CPU_FREQ_SA1110
1488 bool
1da177e4
LT
1489
1490config CPU_FREQ_INTEGRATOR
1491 tristate "CPUfreq driver for ARM Integrator CPUs"
1492 depends on ARCH_INTEGRATOR && CPU_FREQ
1493 default y
1494 help
1495 This enables the CPUfreq driver for ARM Integrator CPUs.
1496
1497 For details, take a look at <file:Documentation/cpu-freq>.
1498
1499 If in doubt, say Y.
1500
9e2697ff
RK
1501config CPU_FREQ_PXA
1502 bool
1503 depends on CPU_FREQ && ARCH_PXA && PXA25x
1504 default y
1505 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1506
b3748ddd
MB
1507config CPU_FREQ_S3C64XX
1508 bool "CPUfreq support for Samsung S3C64XX CPUs"
1509 depends on CPU_FREQ && CPU_S3C6410
1510
9d56c02a
BD
1511config CPU_FREQ_S3C
1512 bool
1513 help
1514 Internal configuration node for common cpufreq on Samsung SoC
1515
1516config CPU_FREQ_S3C24XX
1517 bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1518 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1519 select CPU_FREQ_S3C
1520 help
1521 This enables the CPUfreq driver for the Samsung S3C24XX family
1522 of CPUs.
1523
1524 For details, take a look at <file:Documentation/cpu-freq>.
1525
1526 If in doubt, say N.
1527
1528config CPU_FREQ_S3C24XX_PLL
1529 bool "Support CPUfreq changing of PLL frequency"
1530 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1531 help
1532 Compile in support for changing the PLL frequency from the
1533 S3C24XX series CPUfreq driver. The PLL takes time to settle
1534 after a frequency change, so by default it is not enabled.
1535
1536 This also means that the PLL tables for the selected CPU(s) will
1537 be built which may increase the size of the kernel image.
1538
1539config CPU_FREQ_S3C24XX_DEBUG
1540 bool "Debug CPUfreq Samsung driver core"
1541 depends on CPU_FREQ_S3C24XX
1542 help
1543 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1544
1545config CPU_FREQ_S3C24XX_IODEBUG
1546 bool "Debug CPUfreq Samsung driver IO timing"
1547 depends on CPU_FREQ_S3C24XX
1548 help
1549 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1550
e6d197a6
BD
1551config CPU_FREQ_S3C24XX_DEBUGFS
1552 bool "Export debugfs for CPUFreq"
1553 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1554 help
1555 Export status information via debugfs.
1556
1da177e4
LT
1557endif
1558
ac9d7efc
RK
1559source "drivers/cpuidle/Kconfig"
1560
1561endmenu
1562
1da177e4
LT
1563menu "Floating point emulation"
1564
1565comment "At least one emulation must be selected"
1566
1567config FPE_NWFPE
1568 bool "NWFPE math emulation"
8993a44c 1569 depends on !AEABI || OABI_COMPAT
1da177e4
LT
1570 ---help---
1571 Say Y to include the NWFPE floating point emulator in the kernel.
1572 This is necessary to run most binaries. Linux does not currently
1573 support floating point hardware so you need to say Y here even if
1574 your machine has an FPA or floating point co-processor podule.
1575
1576 You may say N here if you are going to load the Acorn FPEmulator
1577 early in the bootup.
1578
1579config FPE_NWFPE_XP
1580 bool "Support extended precision"
bedf142b 1581 depends on FPE_NWFPE
1da177e4
LT
1582 help
1583 Say Y to include 80-bit support in the kernel floating-point
1584 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1585 Note that gcc does not generate 80-bit operations by default,
1586 so in most cases this option only enlarges the size of the
1587 floating point emulator without any good reason.
1588
1589 You almost surely want to say N here.
1590
1591config FPE_FASTFPE
1592 bool "FastFPE math emulation (EXPERIMENTAL)"
8993a44c 1593 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1da177e4
LT
1594 ---help---
1595 Say Y here to include the FAST floating point emulator in the kernel.
1596 This is an experimental much faster emulator which now also has full
1597 precision for the mantissa. It does not support any exceptions.
1598 It is very simple, and approximately 3-6 times faster than NWFPE.
1599
1600 It should be sufficient for most programs. It may be not suitable
1601 for scientific calculations, but you have to check this for yourself.
1602 If you do not feel you need a faster FP emulation you should better
1603 choose NWFPE.
1604
1605config VFP
1606 bool "VFP-format floating point maths"
c00d4ffd 1607 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1da177e4
LT
1608 help
1609 Say Y to include VFP support code in the kernel. This is needed
1610 if your hardware includes a VFP unit.
1611
1612 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1613 release notes and additional status information.
1614
1615 Say N if your target does not have VFP hardware.
1616
25ebee02
CM
1617config VFPv3
1618 bool
1619 depends on VFP
1620 default y if CPU_V7
1621
b5872db4
CM
1622config NEON
1623 bool "Advanced SIMD (NEON) Extension support"
1624 depends on VFPv3 && CPU_V7
1625 help
1626 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1627 Extension.
1628
1da177e4
LT
1629endmenu
1630
1631menu "Userspace binary formats"
1632
1633source "fs/Kconfig.binfmt"
1634
1635config ARTHUR
1636 tristate "RISC OS personality"
704bdda0 1637 depends on !AEABI
1da177e4
LT
1638 help
1639 Say Y here to include the kernel code necessary if you want to run
1640 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1641 experimental; if this sounds frightening, say N and sleep in peace.
1642 You can also say M here to compile this support as a module (which
1643 will be called arthur).
1644
1645endmenu
1646
1647menu "Power management options"
1648
eceab4ac 1649source "kernel/power/Kconfig"
1da177e4 1650
f4cb5700
JB
1651config ARCH_SUSPEND_POSSIBLE
1652 def_bool y
1653
1da177e4
LT
1654endmenu
1655
d5950b43
SR
1656source "net/Kconfig"
1657
ac25150f 1658source "drivers/Kconfig"
1da177e4
LT
1659
1660source "fs/Kconfig"
1661
1da177e4
LT
1662source "arch/arm/Kconfig.debug"
1663
1664source "security/Kconfig"
1665
1666source "crypto/Kconfig"
1667
1668source "lib/Kconfig"