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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
2778f620 13 select HAVE_MEMBLOCK
12b824fb 14 select RTC_LIB
75e7153a 15 select SYS_SUPPORTS_APM_EMULATION
24b44a66 16 select GENERIC_ATOMIC64 if (!CPU_32v6K)
fe166148 17 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
5cbad0eb 18 select HAVE_ARCH_KGDB
3f550096 19 select HAVE_KPROBES if (!XIP_KERNEL)
9edddaa2 20 select HAVE_KRETPROBES if (HAVE_KPROBES)
606576ce 21 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
1fe53268 22 select HAVE_GENERIC_DMA_COHERENT
e7db7b42
AT
23 select HAVE_KERNEL_GZIP
24 select HAVE_KERNEL_LZO
6e8699f7 25 select HAVE_KERNEL_LZMA
7ada189f
JI
26 select HAVE_PERF_EVENTS
27 select PERF_USE_VMALLOC
e513f8bf 28 select HAVE_REGS_AND_STACK_ACCESS_API
1da177e4
LT
29 help
30 The ARM series is a line of low-power-consumption RISC chip designs
f6c8965a 31 licensed by ARM Ltd and targeted at embedded applications and
1da177e4 32 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
f6c8965a 33 manufactured, but legacy ARM-based PC hardware remains popular in
1da177e4
LT
34 Europe. There is an ARM Linux project with a web page at
35 <http://www.arm.linux.org.uk/>.
36
1a189b97
RK
37config HAVE_PWM
38 bool
39
75e7153a
RB
40config SYS_SUPPORTS_APM_EMULATION
41 bool
42
0a938b97
DB
43config GENERIC_GPIO
44 bool
0a938b97 45
746140c7
KH
46config GENERIC_TIME
47 bool
5cfc8ee0
JS
48 default y
49
50config ARCH_USES_GETTIMEOFFSET
51 bool
52 default n
746140c7 53
0567a0c0
KH
54config GENERIC_CLOCKEVENTS
55 bool
0567a0c0 56
a8655e83
CM
57config GENERIC_CLOCKEVENTS_BROADCAST
58 bool
59 depends on GENERIC_CLOCKEVENTS
5388a6b2 60 default y if SMP
a8655e83 61
bc581770
LW
62config HAVE_TCM
63 bool
64 select GENERIC_ALLOCATOR
65
e119bfff
RK
66config HAVE_PROC_CPU
67 bool
68
5ea81769
AV
69config NO_IOPORT
70 bool
5ea81769 71
1da177e4
LT
72config EISA
73 bool
74 ---help---
75 The Extended Industry Standard Architecture (EISA) bus was
76 developed as an open alternative to the IBM MicroChannel bus.
77
78 The EISA bus provided some of the features of the IBM MicroChannel
79 bus while maintaining backward compatibility with cards made for
80 the older ISA bus. The EISA bus saw limited use between 1988 and
81 1995 when it was made obsolete by the PCI bus.
82
83 Say Y here if you are building a kernel for an EISA-based machine.
84
85 Otherwise, say N.
86
87config SBUS
88 bool
89
90config MCA
91 bool
92 help
93 MicroChannel Architecture is found in some IBM PS/2 machines and
94 laptops. It is a bus system similar to PCI or ISA. See
95 <file:Documentation/mca.txt> (and especially the web page given
96 there) before attempting to build an MCA bus kernel.
97
4a2581a0
TG
98config GENERIC_HARDIRQS
99 bool
100 default y
101
f16fb1ec
RK
102config STACKTRACE_SUPPORT
103 bool
104 default y
105
f76e9154
NP
106config HAVE_LATENCYTOP_SUPPORT
107 bool
108 depends on !SMP
109 default y
110
f16fb1ec
RK
111config LOCKDEP_SUPPORT
112 bool
113 default y
114
7ad1bcb2
RK
115config TRACE_IRQFLAGS_SUPPORT
116 bool
117 default y
118
4a2581a0
TG
119config HARDIRQS_SW_RESEND
120 bool
121 default y
122
123config GENERIC_IRQ_PROBE
124 bool
125 default y
126
95c354fe
NP
127config GENERIC_LOCKBREAK
128 bool
129 default y
130 depends on SMP && PREEMPT
131
1da177e4
LT
132config RWSEM_GENERIC_SPINLOCK
133 bool
134 default y
135
136config RWSEM_XCHGADD_ALGORITHM
137 bool
138
f0d1b0b3
DH
139config ARCH_HAS_ILOG2_U32
140 bool
f0d1b0b3
DH
141
142config ARCH_HAS_ILOG2_U64
143 bool
f0d1b0b3 144
89c52ed4
BD
145config ARCH_HAS_CPUFREQ
146 bool
147 help
148 Internal node to signify that the ARCH has CPUFREQ support
149 and that the relevant menu configurations are displayed for
150 it.
151
b89c3b16
AM
152config GENERIC_HWEIGHT
153 bool
154 default y
155
1da177e4
LT
156config GENERIC_CALIBRATE_DELAY
157 bool
158 default y
159
a08b6b79
AV
160config ARCH_MAY_HAVE_PC_FDC
161 bool
162
5ac6da66
CL
163config ZONE_DMA
164 bool
5ac6da66 165
ccd7ab7f
FT
166config NEED_DMA_MAP_STATE
167 def_bool y
168
1da177e4
LT
169config GENERIC_ISA_DMA
170 bool
171
1da177e4
LT
172config FIQ
173 bool
174
034d2f5a
AV
175config ARCH_MTD_XIP
176 bool
177
60a752ef 178config GENERIC_HARDIRQS_NO__DO_IRQ
60a752ef
PZ
179 def_bool y
180
d6d502fa
KK
181config ARM_L1_CACHE_SHIFT_6
182 bool
183 help
184 Setting ARM L1 cache line size to 64 Bytes.
185
c760fc19
HC
186config VECTORS_BASE
187 hex
6afd6fae 188 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
c760fc19
HC
189 default DRAM_BASE if REMAP_VECTORS_TO_RAM
190 default 0x00000000
191 help
192 The base address of exception vectors.
193
1da177e4
LT
194source "init/Kconfig"
195
dc52ddc0
MH
196source "kernel/Kconfig.freezer"
197
1da177e4
LT
198menu "System Type"
199
3c427975
HC
200config MMU
201 bool "MMU-based Paged Memory Management Support"
202 default y
203 help
204 Select if you want MMU-based virtualised addressing space
205 support by paged memory management. If unsure, say 'Y'.
206
ccf50e23
RK
207#
208# The "ARM system type" choice list is ordered alphabetically by option
209# text. Please add new entries in the option alphabetic order.
210#
1da177e4
LT
211choice
212 prompt "ARM system type"
6a0e2430 213 default ARCH_VERSATILE
1da177e4 214
4af6fee1
DS
215config ARCH_AAEC2000
216 bool "Agilent AAEC-2000 based"
c750815e 217 select CPU_ARM920T
4af6fee1 218 select ARM_AMBA
9483a578 219 select HAVE_CLK
5cfc8ee0 220 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
221 help
222 This enables support for systems based on the Agilent AAEC-2000
223
224config ARCH_INTEGRATOR
225 bool "ARM Ltd. Integrator family"
226 select ARM_AMBA
89c52ed4 227 select ARCH_HAS_CPUFREQ
d72fbdf0 228 select COMMON_CLKDEV
c5a0adb5 229 select ICST
13edd86d 230 select GENERIC_CLOCKEVENTS
f4b8b319 231 select PLAT_VERSATILE
4af6fee1
DS
232 help
233 Support for ARM's Integrator platform.
234
235config ARCH_REALVIEW
236 bool "ARM Ltd. RealView family"
237 select ARM_AMBA
cf30fb4a 238 select COMMON_CLKDEV
c5a0adb5 239 select ICST
ae30ceac 240 select GENERIC_CLOCKEVENTS
eb7fffa3 241 select ARCH_WANT_OPTIONAL_GPIOLIB
f4b8b319 242 select PLAT_VERSATILE
e3887714 243 select ARM_TIMER_SP804
b56ba8aa 244 select GPIO_PL061 if GPIOLIB
4af6fee1
DS
245 help
246 This enables support for ARM Ltd RealView boards.
247
248config ARCH_VERSATILE
249 bool "ARM Ltd. Versatile family"
250 select ARM_AMBA
251 select ARM_VIC
71a06da0 252 select COMMON_CLKDEV
c5a0adb5 253 select ICST
89df1272 254 select GENERIC_CLOCKEVENTS
bbeddc43 255 select ARCH_WANT_OPTIONAL_GPIOLIB
f4b8b319 256 select PLAT_VERSATILE
e3887714 257 select ARM_TIMER_SP804
4af6fee1
DS
258 help
259 This enables support for ARM Ltd Versatile board.
260
ceade897
RK
261config ARCH_VEXPRESS
262 bool "ARM Ltd. Versatile Express family"
263 select ARCH_WANT_OPTIONAL_GPIOLIB
264 select ARM_AMBA
265 select ARM_TIMER_SP804
266 select COMMON_CLKDEV
267 select GENERIC_CLOCKEVENTS
ceade897
RK
268 select HAVE_CLK
269 select ICST
270 select PLAT_VERSATILE
271 help
272 This enables support for the ARM Ltd Versatile Express boards.
273
8fc5ffa0
AV
274config ARCH_AT91
275 bool "Atmel AT91"
f373e8c0 276 select ARCH_REQUIRE_GPIOLIB
93686ae8 277 select HAVE_CLK
5cfc8ee0 278 select ARCH_USES_GETTIMEOFFSET
4af6fee1 279 help
2b3b3516
AV
280 This enables support for systems based on the Atmel AT91RM9200,
281 AT91SAM9 and AT91CAP9 processors.
4af6fee1 282
ccf50e23
RK
283config ARCH_BCMRING
284 bool "Broadcom BCMRING"
285 depends on MMU
286 select CPU_V6
287 select ARM_AMBA
288 select COMMON_CLKDEV
ccf50e23
RK
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
5cfc8ee0 297 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
298 help
299 Support for Cirrus Logic 711x/721x based boards.
1da177e4 300
d94f944e
AV
301config ARCH_CNS3XXX
302 bool "Cavium Networks CNS3XXX family"
303 select CPU_V6
d94f944e
AV
304 select GENERIC_CLOCKEVENTS
305 select ARM_GIC
5f32f7a0 306 select PCI_DOMAINS if PCI
d94f944e
AV
307 help
308 Support for Cavium Networks CNS3XXX platform.
309
788c9700
RK
310config ARCH_GEMINI
311 bool "Cortina Systems Gemini"
312 select CPU_FA526
788c9700 313 select ARCH_REQUIRE_GPIOLIB
5cfc8ee0 314 select ARCH_USES_GETTIMEOFFSET
788c9700
RK
315 help
316 Support for the Cortina Systems Gemini family SoCs
317
1da177e4
LT
318config ARCH_EBSA110
319 bool "EBSA-110"
c750815e 320 select CPU_SA110
f7e68bbf 321 select ISA
c5eb2a2b 322 select NO_IOPORT
5cfc8ee0 323 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
324 help
325 This is an evaluation board for the StrongARM processor available
f6c8965a 326 from Digital. It has limited hardware on-board, including an
1da177e4
LT
327 Ethernet interface, two PCMCIA sockets, two serial ports and a
328 parallel port.
329
e7736d47
LB
330config ARCH_EP93XX
331 bool "EP93xx-based"
c750815e 332 select CPU_ARM920T
e7736d47
LB
333 select ARM_AMBA
334 select ARM_VIC
ae696fd5 335 select COMMON_CLKDEV
7444a72e 336 select ARCH_REQUIRE_GPIOLIB
eb33575c 337 select ARCH_HAS_HOLES_MEMORYMODEL
5cfc8ee0 338 select ARCH_USES_GETTIMEOFFSET
e7736d47
LB
339 help
340 This enables support for the Cirrus EP93xx series of CPUs.
341
1da177e4
LT
342config ARCH_FOOTBRIDGE
343 bool "FootBridge"
c750815e 344 select CPU_SA110
1da177e4 345 select FOOTBRIDGE
5cfc8ee0 346 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
347 help
348 Support for systems based on the DC21285 companion chip
349 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1da177e4 350
788c9700
RK
351config ARCH_MXC
352 bool "Freescale MXC/iMX-based"
788c9700 353 select GENERIC_CLOCKEVENTS
788c9700 354 select ARCH_REQUIRE_GPIOLIB
03e09cd8 355 select COMMON_CLKDEV
788c9700
RK
356 help
357 Support for Freescale MXC/iMX-based family of processors
358
7bd0f2f5 359config ARCH_STMP3XXX
360 bool "Freescale STMP3xxx"
361 select CPU_ARM926T
7bd0f2f5 362 select COMMON_CLKDEV
363 select ARCH_REQUIRE_GPIOLIB
7bd0f2f5 364 select GENERIC_CLOCKEVENTS
7bd0f2f5 365 select USB_ARCH_HAS_EHCI
366 help
367 Support for systems based on the Freescale 3xxx CPUs.
368
4af6fee1
DS
369config ARCH_NETX
370 bool "Hilscher NetX based"
c750815e 371 select CPU_ARM926T
4af6fee1 372 select ARM_VIC
2fcfe6b8 373 select GENERIC_CLOCKEVENTS
f999b8bd 374 help
4af6fee1
DS
375 This enables support for systems based on the Hilscher NetX Soc
376
377config ARCH_H720X
378 bool "Hynix HMS720x-based"
c750815e 379 select CPU_ARM720T
4af6fee1 380 select ISA_DMA_API
5cfc8ee0 381 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
382 help
383 This enables support for systems based on the Hynix HMS720x
384
3b938be6
RK
385config ARCH_IOP13XX
386 bool "IOP13xx-based"
387 depends on MMU
c750815e 388 select CPU_XSC3
3b938be6
RK
389 select PLAT_IOP
390 select PCI
391 select ARCH_SUPPORTS_MSI
8d5796d2 392 select VMSPLIT_1G
3b938be6
RK
393 help
394 Support for Intel's IOP13XX (XScale) family of processors.
395
3f7e5815
LB
396config ARCH_IOP32X
397 bool "IOP32x-based"
a4f7e763 398 depends on MMU
c750815e 399 select CPU_XSCALE
7ae1f7ec 400 select PLAT_IOP
f7e68bbf 401 select PCI
bb2b180c 402 select ARCH_REQUIRE_GPIOLIB
f999b8bd 403 help
3f7e5815
LB
404 Support for Intel's 80219 and IOP32X (XScale) family of
405 processors.
406
407config ARCH_IOP33X
408 bool "IOP33x-based"
409 depends on MMU
c750815e 410 select CPU_XSCALE
7ae1f7ec 411 select PLAT_IOP
3f7e5815 412 select PCI
bb2b180c 413 select ARCH_REQUIRE_GPIOLIB
3f7e5815
LB
414 help
415 Support for Intel's IOP33X (XScale) family of processors.
1da177e4 416
3b938be6
RK
417config ARCH_IXP23XX
418 bool "IXP23XX-based"
a4f7e763 419 depends on MMU
c750815e 420 select CPU_XSC3
3b938be6 421 select PCI
5cfc8ee0 422 select ARCH_USES_GETTIMEOFFSET
f999b8bd 423 help
3b938be6 424 Support for Intel's IXP23xx (XScale) family of processors.
1da177e4
LT
425
426config ARCH_IXP2000
427 bool "IXP2400/2800-based"
a4f7e763 428 depends on MMU
c750815e 429 select CPU_XSCALE
f7e68bbf 430 select PCI
5cfc8ee0 431 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
432 help
433 Support for Intel's IXP2400/2800 (XScale) family of processors.
1da177e4 434
3b938be6
RK
435config ARCH_IXP4XX
436 bool "IXP4xx-based"
a4f7e763 437 depends on MMU
c750815e 438 select CPU_XSCALE
8858e9af 439 select GENERIC_GPIO
3b938be6 440 select GENERIC_CLOCKEVENTS
485bdde7 441 select DMABOUNCE if PCI
c4713074 442 help
3b938be6 443 Support for Intel's IXP4XX (XScale) family of processors.
c4713074 444
edabd38e
SB
445config ARCH_DOVE
446 bool "Marvell Dove"
447 select PCI
edabd38e 448 select ARCH_REQUIRE_GPIOLIB
edabd38e
SB
449 select GENERIC_CLOCKEVENTS
450 select PLAT_ORION
451 help
452 Support for the Marvell Dove SoC 88AP510
453
651c74c7
SB
454config ARCH_KIRKWOOD
455 bool "Marvell Kirkwood"
c750815e 456 select CPU_FEROCEON
651c74c7 457 select PCI
a8865655 458 select ARCH_REQUIRE_GPIOLIB
651c74c7
SB
459 select GENERIC_CLOCKEVENTS
460 select PLAT_ORION
461 help
462 Support for the following Marvell Kirkwood series SoCs:
463 88F6180, 88F6192 and 88F6281.
464
777f9beb
LB
465config ARCH_LOKI
466 bool "Marvell Loki (88RC8480)"
c750815e 467 select CPU_FEROCEON
777f9beb
LB
468 select GENERIC_CLOCKEVENTS
469 select PLAT_ORION
470 help
471 Support for the Marvell Loki (88RC8480) SoC.
472
40805949
KW
473config ARCH_LPC32XX
474 bool "NXP LPC32XX"
475 select CPU_ARM926T
476 select ARCH_REQUIRE_GPIOLIB
477 select HAVE_IDE
478 select ARM_AMBA
479 select USB_ARCH_HAS_OHCI
480 select COMMON_CLKDEV
481 select GENERIC_TIME
482 select GENERIC_CLOCKEVENTS
483 help
484 Support for the NXP LPC32XX family of processors
485
794d15b2
SS
486config ARCH_MV78XX0
487 bool "Marvell MV78xx0"
c750815e 488 select CPU_FEROCEON
794d15b2 489 select PCI
a8865655 490 select ARCH_REQUIRE_GPIOLIB
794d15b2
SS
491 select GENERIC_CLOCKEVENTS
492 select PLAT_ORION
493 help
494 Support for the following Marvell MV78xx0 series SoCs:
495 MV781x0, MV782x0.
496
9dd0b194 497config ARCH_ORION5X
585cf175
TP
498 bool "Marvell Orion"
499 depends on MMU
c750815e 500 select CPU_FEROCEON
038ee083 501 select PCI
a8865655 502 select ARCH_REQUIRE_GPIOLIB
51cbff1d 503 select GENERIC_CLOCKEVENTS
69b02f6a 504 select PLAT_ORION
585cf175 505 help
9dd0b194 506 Support for the following Marvell Orion 5x series SoCs:
d2b2a6bb 507 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
d323ade1 508 Orion-2 (5281), Orion-1-90 (6183).
585cf175 509
788c9700 510config ARCH_MMP
2f7e8fae 511 bool "Marvell PXA168/910/MMP2"
788c9700 512 depends on MMU
788c9700 513 select ARCH_REQUIRE_GPIOLIB
788c9700 514 select COMMON_CLKDEV
788c9700
RK
515 select GENERIC_CLOCKEVENTS
516 select TICK_ONESHOT
517 select PLAT_PXA
518 help
2f7e8fae 519 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
788c9700
RK
520
521config ARCH_KS8695
522 bool "Micrel/Kendin KS8695"
523 select CPU_ARM922T
98830bc9 524 select ARCH_REQUIRE_GPIOLIB
5cfc8ee0 525 select ARCH_USES_GETTIMEOFFSET
788c9700
RK
526 help
527 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
528 System-on-Chip devices.
529
530config ARCH_NS9XXX
531 bool "NetSilicon NS9xxx"
532 select CPU_ARM926T
533 select GENERIC_GPIO
788c9700
RK
534 select GENERIC_CLOCKEVENTS
535 select HAVE_CLK
536 help
537 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
538 System.
539
540 <http://www.digi.com/products/microprocessors/index.jsp>
541
542config ARCH_W90X900
543 bool "Nuvoton W90X900 CPU"
544 select CPU_ARM926T
c52d3d68 545 select ARCH_REQUIRE_GPIOLIB
0e4a34bb 546 select COMMON_CLKDEV
58b5369e 547 select GENERIC_CLOCKEVENTS
788c9700 548 help
a8bc4ead 549 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
550 At present, the w90x900 has been renamed nuc900, regarding
551 the ARM series product line, you can login the following
552 link address to know more.
553
554 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
555 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
788c9700 556
a62e9030 557config ARCH_NUC93X
558 bool "Nuvoton NUC93X CPU"
559 select CPU_ARM926T
a62e9030 560 select COMMON_CLKDEV
561 help
562 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
563 low-power and high performance MPEG-4/JPEG multimedia controller chip.
564
c5f80065
EG
565config ARCH_TEGRA
566 bool "NVIDIA Tegra"
567 select GENERIC_TIME
568 select GENERIC_CLOCKEVENTS
569 select GENERIC_GPIO
570 select HAVE_CLK
571 select ARCH_HAS_BARRIERS if CACHE_L2X0
572 help
573 This enables support for NVIDIA Tegra based systems (Tegra APX,
574 Tegra 6xx and Tegra 2 series).
575
4af6fee1
DS
576config ARCH_PNX4008
577 bool "Philips Nexperia PNX4008 Mobile"
c750815e 578 select CPU_ARM926T
6985a5ad 579 select COMMON_CLKDEV
5cfc8ee0 580 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
581 help
582 This enables support for Philips PNX4008 mobile platform.
583
1da177e4 584config ARCH_PXA
2c8086a5 585 bool "PXA2xx/PXA3xx-based"
a4f7e763 586 depends on MMU
034d2f5a 587 select ARCH_MTD_XIP
89c52ed4 588 select ARCH_HAS_CPUFREQ
8c3abc7d 589 select COMMON_CLKDEV
7444a72e 590 select ARCH_REQUIRE_GPIOLIB
981d0f39 591 select GENERIC_CLOCKEVENTS
a88264c2 592 select TICK_ONESHOT
bd5ce433 593 select PLAT_PXA
f999b8bd 594 help
2c8086a5 595 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
1da177e4 596
788c9700
RK
597config ARCH_MSM
598 bool "Qualcomm MSM"
4b536b8d 599 select HAVE_CLK
49cbe786 600 select GENERIC_CLOCKEVENTS
923a081c 601 select ARCH_REQUIRE_GPIOLIB
49cbe786 602 help
4b53eb4f
DW
603 Support for Qualcomm MSM/QSD based systems. This runs on the
604 apps processor of the MSM/QSD and depends on a shared memory
605 interface to the modem processor which runs the baseband
606 stack and controls some vital subsystems
607 (clock and power control, etc).
49cbe786 608
c793c1b0
MD
609config ARCH_SHMOBILE
610 bool "Renesas SH-Mobile"
611 help
612 Support for Renesas's SH-Mobile ARM platforms
613
1da177e4
LT
614config ARCH_RPC
615 bool "RiscPC"
616 select ARCH_ACORN
617 select FIQ
618 select TIMER_ACORN
a08b6b79 619 select ARCH_MAY_HAVE_PC_FDC
341eb781 620 select HAVE_PATA_PLATFORM
065909b9 621 select ISA_DMA_API
5ea81769 622 select NO_IOPORT
07f841b7 623 select ARCH_SPARSEMEM_ENABLE
5cfc8ee0 624 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
625 help
626 On the Acorn Risc-PC, Linux can support the internal IDE disk and
627 CD-ROM interface, serial and parallel port, and the floppy drive.
628
629config ARCH_SA1100
630 bool "SA1100-based"
c750815e 631 select CPU_SA1100
f7e68bbf 632 select ISA
05944d74 633 select ARCH_SPARSEMEM_ENABLE
034d2f5a 634 select ARCH_MTD_XIP
89c52ed4 635 select ARCH_HAS_CPUFREQ
1937f5b9 636 select CPU_FREQ
3e238be2 637 select GENERIC_CLOCKEVENTS
9483a578 638 select HAVE_CLK
3e238be2 639 select TICK_ONESHOT
7444a72e 640 select ARCH_REQUIRE_GPIOLIB
f999b8bd
MM
641 help
642 Support for StrongARM 11x0 based boards.
1da177e4
LT
643
644config ARCH_S3C2410
63b1f51b 645 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
0a938b97 646 select GENERIC_GPIO
9d56c02a 647 select ARCH_HAS_CPUFREQ
9483a578 648 select HAVE_CLK
5cfc8ee0 649 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
650 help
651 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
652 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
f6c8965a 653 the Samsung SMDK2410 development board (and derivatives).
1da177e4 654
63b1f51b
BD
655 Note, the S3C2416 and the S3C2450 are so close that they even share
656 the same SoC ID code. This means that there is no seperate machine
657 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
658
a08ab637
BD
659config ARCH_S3C64XX
660 bool "Samsung S3C64XX"
89f1fa08 661 select PLAT_SAMSUNG
89f0ce72 662 select CPU_V6
89f0ce72 663 select ARM_VIC
a08ab637 664 select HAVE_CLK
89f0ce72 665 select NO_IOPORT
5cfc8ee0 666 select ARCH_USES_GETTIMEOFFSET
89c52ed4 667 select ARCH_HAS_CPUFREQ
89f0ce72
BD
668 select ARCH_REQUIRE_GPIOLIB
669 select SAMSUNG_CLKSRC
670 select SAMSUNG_IRQ_VIC_TIMER
671 select SAMSUNG_IRQ_UART
672 select S3C_GPIO_TRACK
673 select S3C_GPIO_PULL_UPDOWN
674 select S3C_GPIO_CFG_S3C24XX
675 select S3C_GPIO_CFG_S3C64XX
676 select S3C_DEV_NAND
677 select USB_ARCH_HAS_OHCI
678 select SAMSUNG_GPIOLIB_4BIT
a08ab637
BD
679 help
680 Samsung S3C64XX series based systems
681
c4ffccdd
KK
682config ARCH_S5P6440
683 bool "Samsung S5P6440"
684 select CPU_V6
685 select GENERIC_GPIO
686 select HAVE_CLK
925c68cd 687 select ARCH_USES_GETTIMEOFFSET
c4ffccdd
KK
688 help
689 Samsung S5P6440 CPU based systems
690
550db7f1
KK
691config ARCH_S5P6442
692 bool "Samsung S5P6442"
693 select CPU_V6
694 select GENERIC_GPIO
695 select HAVE_CLK
925c68cd 696 select ARCH_USES_GETTIMEOFFSET
550db7f1
KK
697 help
698 Samsung S5P6442 CPU based systems
699
acc84707
MS
700config ARCH_S5PC100
701 bool "Samsung S5PC100"
5a7652f2
BM
702 select GENERIC_GPIO
703 select HAVE_CLK
704 select CPU_V7
d6d502fa 705 select ARM_L1_CACHE_SHIFT_6
925c68cd 706 select ARCH_USES_GETTIMEOFFSET
5a7652f2 707 help
acc84707 708 Samsung S5PC100 series based systems
5a7652f2 709
170f4e42
KK
710config ARCH_S5PV210
711 bool "Samsung S5PV210/S5PC110"
712 select CPU_V7
713 select GENERIC_GPIO
714 select HAVE_CLK
715 select ARM_L1_CACHE_SHIFT_6
925c68cd 716 select ARCH_USES_GETTIMEOFFSET
170f4e42
KK
717 help
718 Samsung S5PV210/S5PC110 series based systems
719
1da177e4
LT
720config ARCH_SHARK
721 bool "Shark"
c750815e 722 select CPU_SA110
f7e68bbf
RK
723 select ISA
724 select ISA_DMA
3bca103a 725 select ZONE_DMA
f7e68bbf 726 select PCI
5cfc8ee0 727 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
728 help
729 Support for the StrongARM based Digital DNARD machine, also known
730 as "Shark" (<http://www.shark-linux.de/shark.html>).
1da177e4
LT
731
732config ARCH_LH7A40X
733 bool "Sharp LH7A40X"
c750815e 734 select CPU_ARM922T
4ba3f7c5 735 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
5cfc8ee0 736 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
737 help
738 Say Y here for systems based on one of the Sharp LH7A40X
739 System on a Chip processors. These CPUs include an ARM922T
740 core with a wide array of integrated devices for
741 hand-held and low-power applications.
742
d98aac75
LW
743config ARCH_U300
744 bool "ST-Ericsson U300 Series"
745 depends on MMU
746 select CPU_ARM926T
bc581770 747 select HAVE_TCM
d98aac75
LW
748 select ARM_AMBA
749 select ARM_VIC
d98aac75 750 select GENERIC_CLOCKEVENTS
d98aac75
LW
751 select COMMON_CLKDEV
752 select GENERIC_GPIO
753 help
754 Support for ST-Ericsson U300 series mobile platforms.
755
ccf50e23
RK
756config ARCH_U8500
757 bool "ST-Ericsson U8500 Series"
758 select CPU_V7
759 select ARM_AMBA
ccf50e23
RK
760 select GENERIC_CLOCKEVENTS
761 select COMMON_CLKDEV
94bdc0e2 762 select ARCH_REQUIRE_GPIOLIB
ccf50e23
RK
763 help
764 Support for ST-Ericsson's Ux500 architecture
765
766config ARCH_NOMADIK
767 bool "STMicroelectronics Nomadik"
768 select ARM_AMBA
769 select ARM_VIC
770 select CPU_ARM926T
ccf50e23 771 select COMMON_CLKDEV
ccf50e23 772 select GENERIC_CLOCKEVENTS
ccf50e23
RK
773 select ARCH_REQUIRE_GPIOLIB
774 help
775 Support for the Nomadik platform by ST-Ericsson
776
7c6337e2
KH
777config ARCH_DAVINCI
778 bool "TI DaVinci"
7c6337e2 779 select GENERIC_CLOCKEVENTS
dce1115b 780 select ARCH_REQUIRE_GPIOLIB
3bca103a 781 select ZONE_DMA
9232fcc9 782 select HAVE_IDE
c5b736d0 783 select COMMON_CLKDEV
20e9969b 784 select GENERIC_ALLOCATOR
ae88e05a 785 select ARCH_HAS_HOLES_MEMORYMODEL
7c6337e2
KH
786 help
787 Support for TI's DaVinci platform.
788
3b938be6
RK
789config ARCH_OMAP
790 bool "TI OMAP"
9483a578 791 select HAVE_CLK
7444a72e 792 select ARCH_REQUIRE_GPIOLIB
89c52ed4 793 select ARCH_HAS_CPUFREQ
06cad098 794 select GENERIC_CLOCKEVENTS
9af915da 795 select ARCH_HAS_HOLES_MEMORYMODEL
3b938be6
RK
796 help
797 Support for TI's OMAP platform (OMAP1 and OMAP2).
798
cee37e50
VK
799config PLAT_SPEAR
800 bool "ST SPEAr"
801 select ARM_AMBA
802 select ARCH_REQUIRE_GPIOLIB
803 select COMMON_CLKDEV
804 select GENERIC_CLOCKEVENTS
cee37e50
VK
805 select HAVE_CLK
806 help
807 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
808
1da177e4
LT
809endchoice
810
ccf50e23
RK
811#
812# This is sorted alphabetically by mach-* pathname. However, plat-*
813# Kconfigs may be included either alphabetically (according to the
814# plat- suffix) or along side the corresponding mach-* source.
815#
95b8f20f
RK
816source "arch/arm/mach-aaec2000/Kconfig"
817
818source "arch/arm/mach-at91/Kconfig"
819
820source "arch/arm/mach-bcmring/Kconfig"
821
1da177e4
LT
822source "arch/arm/mach-clps711x/Kconfig"
823
d94f944e
AV
824source "arch/arm/mach-cns3xxx/Kconfig"
825
95b8f20f
RK
826source "arch/arm/mach-davinci/Kconfig"
827
828source "arch/arm/mach-dove/Kconfig"
829
e7736d47
LB
830source "arch/arm/mach-ep93xx/Kconfig"
831
1da177e4
LT
832source "arch/arm/mach-footbridge/Kconfig"
833
59d3a193
PZ
834source "arch/arm/mach-gemini/Kconfig"
835
95b8f20f
RK
836source "arch/arm/mach-h720x/Kconfig"
837
1da177e4
LT
838source "arch/arm/mach-integrator/Kconfig"
839
3f7e5815
LB
840source "arch/arm/mach-iop32x/Kconfig"
841
842source "arch/arm/mach-iop33x/Kconfig"
1da177e4 843
285f5fa7
DW
844source "arch/arm/mach-iop13xx/Kconfig"
845
1da177e4
LT
846source "arch/arm/mach-ixp4xx/Kconfig"
847
848source "arch/arm/mach-ixp2000/Kconfig"
849
c4713074
LB
850source "arch/arm/mach-ixp23xx/Kconfig"
851
95b8f20f
RK
852source "arch/arm/mach-kirkwood/Kconfig"
853
854source "arch/arm/mach-ks8695/Kconfig"
855
856source "arch/arm/mach-lh7a40x/Kconfig"
857
777f9beb
LB
858source "arch/arm/mach-loki/Kconfig"
859
40805949
KW
860source "arch/arm/mach-lpc32xx/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 897
cee37e50 898source "arch/arm/plat-spear/Kconfig"
a21765a7
BD
899
900if ARCH_S3C2410
901source "arch/arm/mach-s3c2400/Kconfig"
1da177e4 902source "arch/arm/mach-s3c2410/Kconfig"
a21765a7 903source "arch/arm/mach-s3c2412/Kconfig"
f1290a49 904source "arch/arm/mach-s3c2416/Kconfig"
a21765a7 905source "arch/arm/mach-s3c2440/Kconfig"
e4d06e39 906source "arch/arm/mach-s3c2443/Kconfig"
a21765a7 907endif
1da177e4 908
a08ab637 909if ARCH_S3C64XX
431107ea 910source "arch/arm/mach-s3c64xx/Kconfig"
a08ab637
BD
911endif
912
c4ffccdd
KK
913source "arch/arm/mach-s5p6440/Kconfig"
914
550db7f1 915source "arch/arm/mach-s5p6442/Kconfig"
7bd0f2f5 916
5a7652f2 917source "arch/arm/mach-s5pc100/Kconfig"
5a7652f2 918
170f4e42
KK
919source "arch/arm/mach-s5pv210/Kconfig"
920
882d01f9 921source "arch/arm/mach-shmobile/Kconfig"
52c543f9 922
882d01f9 923source "arch/arm/plat-stmp3xxx/Kconfig"
9e73c84c 924
c5f80065
EG
925source "arch/arm/mach-tegra/Kconfig"
926
95b8f20f 927source "arch/arm/mach-u300/Kconfig"
1da177e4 928
95b8f20f 929source "arch/arm/mach-ux500/Kconfig"
1da177e4
LT
930
931source "arch/arm/mach-versatile/Kconfig"
932
ceade897
RK
933source "arch/arm/mach-vexpress/Kconfig"
934
7ec80ddf 935source "arch/arm/mach-w90x900/Kconfig"
936
1da177e4
LT
937# Definitions to make life easier
938config ARCH_ACORN
939 bool
940
7ae1f7ec
LB
941config PLAT_IOP
942 bool
469d3044 943 select GENERIC_CLOCKEVENTS
7ae1f7ec 944
69b02f6a
LB
945config PLAT_ORION
946 bool
947
bd5ce433
EM
948config PLAT_PXA
949 bool
950
f4b8b319
RK
951config PLAT_VERSATILE
952 bool
953
e3887714
RK
954config ARM_TIMER_SP804
955 bool
956
1da177e4
LT
957source arch/arm/mm/Kconfig
958
afe4b25e
LB
959config IWMMXT
960 bool "Enable iWMMXt support"
40305a58
EM
961 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
962 default y if PXA27x || PXA3xx || ARCH_MMP
afe4b25e
LB
963 help
964 Enable support for iWMMXt context switching at run time if
965 running on a CPU that supports it.
966
1da177e4
LT
967# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
968config XSCALE_PMU
969 bool
970 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
971 default y
972
0f4f0672 973config CPU_HAS_PMU
8954bb0d
WD
974 depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
975 (!ARCH_OMAP3 || OMAP3_EMU)
0f4f0672
JI
976 default y
977 bool
978
3b93e7b0
HC
979if !MMU
980source "arch/arm/Kconfig-nommu"
981endif
982
9cba3ccc
CM
983config ARM_ERRATA_411920
984 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
985 depends on CPU_V6 && !SMP
986 help
987 Invalidation of the Instruction Cache operation can
988 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
989 It does not affect the MPCore. This option enables the ARM Ltd.
990 recommended workaround.
991
7ce236fc
CM
992config ARM_ERRATA_430973
993 bool "ARM errata: Stale prediction on replaced interworking branch"
994 depends on CPU_V7
995 help
996 This option enables the workaround for the 430973 Cortex-A8
997 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
998 interworking branch is replaced with another code sequence at the
999 same virtual address, whether due to self-modifying code or virtual
1000 to physical address re-mapping, Cortex-A8 does not recover from the
1001 stale interworking branch prediction. This results in Cortex-A8
1002 executing the new code sequence in the incorrect ARM or Thumb state.
1003 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1004 and also flushes the branch target cache at every context switch.
1005 Note that setting specific bits in the ACTLR register may not be
1006 available in non-secure mode.
1007
855c551f
CM
1008config ARM_ERRATA_458693
1009 bool "ARM errata: Processor deadlock when a false hazard is created"
1010 depends on CPU_V7
1011 help
1012 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1013 erratum. For very specific sequences of memory operations, it is
1014 possible for a hazard condition intended for a cache line to instead
1015 be incorrectly associated with a different cache line. This false
1016 hazard might then cause a processor deadlock. The workaround enables
1017 the L1 caching of the NEON accesses and disables the PLD instruction
1018 in the ACTLR register. Note that setting specific bits in the ACTLR
1019 register may not be available in non-secure mode.
1020
0516e464
CM
1021config ARM_ERRATA_460075
1022 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1023 depends on CPU_V7
1024 help
1025 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1026 erratum. Any asynchronous access to the L2 cache may encounter a
1027 situation in which recent store transactions to the L2 cache are lost
1028 and overwritten with stale memory contents from external memory. The
1029 workaround disables the write-allocate mode for the L2 cache via the
1030 ACTLR register. Note that setting specific bits in the ACTLR register
1031 may not be available in non-secure mode.
1032
9e65582a
SS
1033config PL310_ERRATA_588369
1034 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1035 depends on CACHE_L2X0 && ARCH_OMAP4
1036 help
1037 The PL310 L2 cache controller implements three types of Clean &
1038 Invalidate maintenance operations: by Physical Address
1039 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1040 They are architecturally defined to behave as the execution of a
1041 clean operation followed immediately by an invalidate operation,
1042 both performing to the same memory location. This functionality
1043 is not correctly implemented in PL310 as clean lines are not
1044 invalidated as a result of these operations. Note that this errata
1045 uses Texas Instrument's secure monitor api.
1da177e4
LT
1046endmenu
1047
1048source "arch/arm/common/Kconfig"
1049
1da177e4
LT
1050menu "Bus support"
1051
1052config ARM_AMBA
1053 bool
1054
1055config ISA
1056 bool
1da177e4
LT
1057 help
1058 Find out whether you have ISA slots on your motherboard. ISA is the
1059 name of a bus system, i.e. the way the CPU talks to the other stuff
1060 inside your box. Other bus systems are PCI, EISA, MicroChannel
1061 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1062 newer boards don't support it. If you have ISA, say Y, otherwise N.
1063
065909b9 1064# Select ISA DMA controller support
1da177e4
LT
1065config ISA_DMA
1066 bool
065909b9 1067 select ISA_DMA_API
1da177e4 1068
065909b9 1069# Select ISA DMA interface
5cae841b
AV
1070config ISA_DMA_API
1071 bool
5cae841b 1072
1da177e4 1073config PCI
5f32f7a0 1074 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX
1da177e4
LT
1075 help
1076 Find out whether you have a PCI motherboard. PCI is the name of a
1077 bus system, i.e. the way the CPU talks to the other stuff inside
1078 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1079 VESA. If you have PCI, say Y, otherwise N.
1080
52882173
AV
1081config PCI_DOMAINS
1082 bool
1083 depends on PCI
1084
36e23590
MW
1085config PCI_SYSCALL
1086 def_bool PCI
1087
1da177e4
LT
1088# Select the host bridge type
1089config PCI_HOST_VIA82C505
1090 bool
1091 depends on PCI && ARCH_SHARK
1092 default y
1093
a0113a99
MR
1094config PCI_HOST_ITE8152
1095 bool
1096 depends on PCI && MACH_ARMCORE
1097 default y
1098 select DMABOUNCE
1099
1da177e4
LT
1100source "drivers/pci/Kconfig"
1101
1102source "drivers/pcmcia/Kconfig"
1103
1104endmenu
1105
1106menu "Kernel Features"
1107
0567a0c0
KH
1108source "kernel/time/Kconfig"
1109
1da177e4
LT
1110config SMP
1111 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
42578c82 1112 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
59ac59f6
RK
1113 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
1114 ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
bc28248e 1115 depends on GENERIC_CLOCKEVENTS
f6dd9fa5 1116 select USE_GENERIC_SMP_HELPERS
59ac59f6 1117 select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1da177e4
LT
1118 help
1119 This enables support for systems with more than one CPU. If you have
1120 a system with only one CPU, like most personal computers, say N. If
1121 you have a system with more than one CPU, say Y.
1122
1123 If you say N here, the kernel will run on single and multiprocessor
1124 machines, but will use only one CPU of a multiprocessor machine. If
1125 you say Y here, the kernel will run on many, but not all, single
1126 processor machines. On a single processor machine, the kernel will
1127 run faster if you say N here.
1128
03502faa 1129 See also <file:Documentation/i386/IO-APIC.txt>,
1da177e4
LT
1130 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1131 <http://www.linuxdoc.org/docs.html#howto>.
1132
1133 If you don't know what to do here, say N.
1134
a8cbcd92
RK
1135config HAVE_ARM_SCU
1136 bool
1137 depends on SMP
1138 help
1139 This option enables support for the ARM system coherency unit
1140
f32f4ce2
RK
1141config HAVE_ARM_TWD
1142 bool
1143 depends on SMP
1144 help
1145 This options enables support for the ARM timer and watchdog unit
1146
8d5796d2
LB
1147choice
1148 prompt "Memory split"
1149 default VMSPLIT_3G
1150 help
1151 Select the desired split between kernel and user memory.
1152
1153 If you are not absolutely sure what you are doing, leave this
1154 option alone!
1155
1156 config VMSPLIT_3G
1157 bool "3G/1G user/kernel split"
1158 config VMSPLIT_2G
1159 bool "2G/2G user/kernel split"
1160 config VMSPLIT_1G
1161 bool "1G/3G user/kernel split"
1162endchoice
1163
1164config PAGE_OFFSET
1165 hex
1166 default 0x40000000 if VMSPLIT_1G
1167 default 0x80000000 if VMSPLIT_2G
1168 default 0xC0000000
1169
1da177e4
LT
1170config NR_CPUS
1171 int "Maximum number of CPUs (2-32)"
1172 range 2 32
1173 depends on SMP
1174 default "4"
1175
a054a811
RK
1176config HOTPLUG_CPU
1177 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1178 depends on SMP && HOTPLUG && EXPERIMENTAL
1179 help
1180 Say Y here to experiment with turning CPUs off and on. CPUs
1181 can be controlled through /sys/devices/system/cpu.
1182
37ee16ae
RK
1183config LOCAL_TIMERS
1184 bool "Use local timer interrupts"
42578c82 1185 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
bde28b84
WD
1186 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
1187 ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
37ee16ae 1188 default y
bde28b84 1189 select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_VEXPRESS || ARCH_OMAP4 || ARCH_U8500)
37ee16ae
RK
1190 help
1191 Enable support for local timers on SMP platforms, rather then the
1192 legacy IPI broadcast method. Local timers allows the system
1193 accounting to be spread across the timer interval, preventing a
1194 "thundering herd" at every timer tick.
1195
d45a398f 1196source kernel/Kconfig.preempt
1da177e4 1197
f8065813
RK
1198config HZ
1199 int
170f4e42 1200 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
bfe65704 1201 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
5248c657 1202 default AT91_TIMER_HZ if ARCH_AT91
5da3e714 1203 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
f8065813
RK
1204 default 100
1205
16c79651
CM
1206config THUMB2_KERNEL
1207 bool "Compile the kernel in Thumb-2 mode"
1208 depends on CPU_V7 && EXPERIMENTAL
1209 select AEABI
1210 select ARM_ASM_UNIFIED
1211 help
1212 By enabling this option, the kernel will be compiled in
1213 Thumb-2 mode. A compiler/assembler that understand the unified
1214 ARM-Thumb syntax is needed.
1215
1216 If unsure, say N.
1217
0becb088
CM
1218config ARM_ASM_UNIFIED
1219 bool
1220
704bdda0
NP
1221config AEABI
1222 bool "Use the ARM EABI to compile the kernel"
1223 help
1224 This option allows for the kernel to be compiled using the latest
1225 ARM ABI (aka EABI). This is only useful if you are using a user
1226 space environment that is also compiled with EABI.
1227
1228 Since there are major incompatibilities between the legacy ABI and
1229 EABI, especially with regard to structure member alignment, this
1230 option also changes the kernel syscall calling convention to
1231 disambiguate both ABIs and allow for backward compatibility support
1232 (selected with CONFIG_OABI_COMPAT).
1233
1234 To use this you need GCC version 4.0.0 or later.
1235
6c90c872 1236config OABI_COMPAT
a73a3ff1 1237 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
61c484d4 1238 depends on AEABI && EXPERIMENTAL
6c90c872
NP
1239 default y
1240 help
1241 This option preserves the old syscall interface along with the
1242 new (ARM EABI) one. It also provides a compatibility layer to
1243 intercept syscalls that have structure arguments which layout
1244 in memory differs between the legacy ABI and the new ARM EABI
1245 (only for non "thumb" binaries). This option adds a tiny
1246 overhead to all syscalls and produces a slightly larger kernel.
1247 If you know you'll be using only pure EABI user space then you
1248 can say N here. If this option is not selected and you attempt
1249 to execute a legacy ABI binary then the result will be
1250 UNPREDICTABLE (in fact it can be predicted that it won't work
1251 at all). If in doubt say Y.
1252
eb33575c 1253config ARCH_HAS_HOLES_MEMORYMODEL
e80d6a24 1254 bool
e80d6a24 1255
05944d74
RK
1256config ARCH_SPARSEMEM_ENABLE
1257 bool
1258
07a2f737
RK
1259config ARCH_SPARSEMEM_DEFAULT
1260 def_bool ARCH_SPARSEMEM_ENABLE
1261
05944d74 1262config ARCH_SELECT_MEMORY_MODEL
be370302 1263 def_bool ARCH_SPARSEMEM_ENABLE
c80d79d7 1264
053a96ca
NP
1265config HIGHMEM
1266 bool "High Memory Support (EXPERIMENTAL)"
1267 depends on MMU && EXPERIMENTAL
1268 help
1269 The address space of ARM processors is only 4 Gigabytes large
1270 and it has to accommodate user address space, kernel address
1271 space as well as some memory mapped IO. That means that, if you
1272 have a large amount of physical memory and/or IO, not all of the
1273 memory can be "permanently mapped" by the kernel. The physical
1274 memory that is not permanently mapped is called "high memory".
1275
1276 Depending on the selected kernel/user memory split, minimum
1277 vmalloc space and actual amount of RAM, you may not need this
1278 option which should result in a slightly faster kernel.
1279
1280 If unsure, say n.
1281
65cec8e3
RK
1282config HIGHPTE
1283 bool "Allocate 2nd-level pagetables from highmem"
1284 depends on HIGHMEM
1285 depends on !OUTER_CACHE
1286
1b8873a0
JI
1287config HW_PERF_EVENTS
1288 bool "Enable hardware performance counter support for perf events"
fe166148 1289 depends on PERF_EVENTS && CPU_HAS_PMU
1b8873a0
JI
1290 default y
1291 help
1292 Enable hardware performance counter support for perf events. If
1293 disabled, perf events will use software events only.
1294
354e6f72 1295config SPARSE_IRQ
c1ba6ba3 1296 def_bool n
354e6f72 1297 help
1298 This enables support for sparse irqs. This is useful in general
1299 as most CPUs have a fairly sparse array of IRQ vectors, which
1300 the irq_desc then maps directly on to. Systems with a high
1301 number of off-chip IRQs will want to treat this as
1302 experimental until they have been independently verified.
1303
3f22ab27
DH
1304source "mm/Kconfig"
1305
c1b2d970
MD
1306config FORCE_MAX_ZONEORDER
1307 int "Maximum zone order" if ARCH_SHMOBILE
1308 range 11 64 if ARCH_SHMOBILE
1309 default "9" if SA1111
1310 default "11"
1311 help
1312 The kernel memory allocator divides physically contiguous memory
1313 blocks into "zones", where each zone is a power of two number of
1314 pages. This option selects the largest power of two that the kernel
1315 keeps in the memory allocator. If you need to allocate very large
1316 blocks of physically contiguous memory, then you may need to
1317 increase this value.
1318
1319 This config option is actually maximum order plus one. For example,
1320 a value of 11 means that the largest free memory block is 2^10 pages.
1321
1da177e4
LT
1322config LEDS
1323 bool "Timer and CPU usage LEDs"
e055d5bf 1324 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
8c8fdbc9 1325 ARCH_EBSA285 || ARCH_INTEGRATOR || \
1da177e4
LT
1326 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1327 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
73a59c1c 1328 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
25329671 1329 ARCH_AT91 || ARCH_DAVINCI || \
ff3042fb 1330 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1da177e4
LT
1331 help
1332 If you say Y here, the LEDs on your machine will be used
1333 to provide useful information about your current system status.
1334
1335 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1336 be able to select which LEDs are active using the options below. If
1337 you are compiling a kernel for the EBSA-110 or the LART however, the
1338 red LED will simply flash regularly to indicate that the system is
1339 still functional. It is safe to say Y here if you have a CATS
1340 system, but the driver will do nothing.
1341
1342config LEDS_TIMER
1343 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
eebdf7d7
DB
1344 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1345 || MACH_OMAP_PERSEUS2
1da177e4 1346 depends on LEDS
0567a0c0 1347 depends on !GENERIC_CLOCKEVENTS
1da177e4
LT
1348 default y if ARCH_EBSA110
1349 help
1350 If you say Y here, one of the system LEDs (the green one on the
1351 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1352 will flash regularly to indicate that the system is still
1353 operational. This is mainly useful to kernel hackers who are
1354 debugging unstable kernels.
1355
1356 The LART uses the same LED for both Timer LED and CPU usage LED
1357 functions. You may choose to use both, but the Timer LED function
1358 will overrule the CPU usage LED.
1359
1360config LEDS_CPU
1361 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
eebdf7d7
DB
1362 !ARCH_OMAP) \
1363 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1364 || MACH_OMAP_PERSEUS2
1da177e4
LT
1365 depends on LEDS
1366 help
1367 If you say Y here, the red LED will be used to give a good real
1368 time indication of CPU usage, by lighting whenever the idle task
1369 is not currently executing.
1370
1371 The LART uses the same LED for both Timer LED and CPU usage LED
1372 functions. You may choose to use both, but the Timer LED function
1373 will overrule the CPU usage LED.
1374
1375config ALIGNMENT_TRAP
1376 bool
f12d0d7c 1377 depends on CPU_CP15_MMU
1da177e4 1378 default y if !ARCH_EBSA110
e119bfff 1379 select HAVE_PROC_CPU if PROC_FS
1da177e4 1380 help
84eb8d06 1381 ARM processors cannot fetch/store information which is not
1da177e4
LT
1382 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1383 address divisible by 4. On 32-bit ARM processors, these non-aligned
1384 fetch/store instructions will be emulated in software if you say
1385 here, which has a severe performance impact. This is necessary for
1386 correct operation of some network protocols. With an IP-only
1387 configuration it is safe to say N, otherwise say Y.
1388
39ec58f3
LB
1389config UACCESS_WITH_MEMCPY
1390 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1391 depends on MMU && EXPERIMENTAL
1392 default y if CPU_FEROCEON
1393 help
1394 Implement faster copy_to_user and clear_user methods for CPU
1395 cores where a 8-word STM instruction give significantly higher
1396 memory write throughput than a sequence of individual 32bit stores.
1397
1398 A possible side effect is a slight increase in scheduling latency
1399 between threads sharing the same address space if they invoke
1400 such copy operations with large buffers.
1401
1402 However, if the CPU data cache is using a write-allocate mode,
1403 this option is unlikely to provide any performance gain.
1404
c743f380
NP
1405config CC_STACKPROTECTOR
1406 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1407 help
1408 This option turns on the -fstack-protector GCC feature. This
1409 feature puts, at the beginning of functions, a canary value on
1410 the stack just before the return address, and validates
1411 the value just before actually returning. Stack based buffer
1412 overflows (that need to overwrite this return address) now also
1413 overwrite the canary, which gets detected and the attack is then
1414 neutralized via a kernel panic.
1415 This feature requires gcc version 4.2 or above.
1416
73a65b3f
UKK
1417config DEPRECATED_PARAM_STRUCT
1418 bool "Provide old way to pass kernel parameters"
1419 help
1420 This was deprecated in 2001 and announced to live on for 5 years.
1421 Some old boot loaders still use this way.
1422
1da177e4
LT
1423endmenu
1424
1425menu "Boot options"
1426
1427# Compressed boot loader in ROM. Yes, we really want to ask about
1428# TEXT and BSS so we preserve their values in the config files.
1429config ZBOOT_ROM_TEXT
1430 hex "Compressed ROM boot loader base address"
1431 default "0"
1432 help
1433 The physical address at which the ROM-able zImage is to be
1434 placed in the target. Platforms which normally make use of
1435 ROM-able zImage formats normally set this to a suitable
1436 value in their defconfig file.
1437
1438 If ZBOOT_ROM is not enabled, this has no effect.
1439
1440config ZBOOT_ROM_BSS
1441 hex "Compressed ROM boot loader BSS address"
1442 default "0"
1443 help
f8c440b2
DF
1444 The base address of an area of read/write memory in the target
1445 for the ROM-able zImage which must be available while the
1446 decompressor is running. It must be large enough to hold the
1447 entire decompressed kernel plus an additional 128 KiB.
1448 Platforms which normally make use of ROM-able zImage formats
1449 normally set this to a suitable value in their defconfig file.
1da177e4
LT
1450
1451 If ZBOOT_ROM is not enabled, this has no effect.
1452
1453config ZBOOT_ROM
1454 bool "Compressed boot loader in ROM/flash"
1455 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1456 help
1457 Say Y here if you intend to execute your compressed kernel image
1458 (zImage) directly from ROM or flash. If unsure, say N.
1459
1460config CMDLINE
1461 string "Default kernel command string"
1462 default ""
1463 help
1464 On some architectures (EBSA110 and CATS), there is currently no way
1465 for the boot loader to pass arguments to the kernel. For these
1466 architectures, you should supply some command-line options at build
1467 time by entering them here. As a minimum, you should specify the
1468 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1469
92d2040d
AH
1470config CMDLINE_FORCE
1471 bool "Always use the default kernel command string"
1472 depends on CMDLINE != ""
1473 help
1474 Always use the default kernel command string, even if the boot
1475 loader passes other arguments to the kernel.
1476 This is useful if you cannot or don't want to change the
1477 command-line options your boot loader passes to the kernel.
1478
1479 If unsure, say N.
1480
1da177e4
LT
1481config XIP_KERNEL
1482 bool "Kernel Execute-In-Place from ROM"
1483 depends on !ZBOOT_ROM
1484 help
1485 Execute-In-Place allows the kernel to run from non-volatile storage
1486 directly addressable by the CPU, such as NOR flash. This saves RAM
1487 space since the text section of the kernel is not loaded from flash
1488 to RAM. Read-write sections, such as the data section and stack,
1489 are still copied to RAM. The XIP kernel is not compressed since
1490 it has to run directly from flash, so it will take more space to
1491 store it. The flash address used to link the kernel object files,
1492 and for storing it, is configuration dependent. Therefore, if you
1493 say Y here, you must know the proper physical address where to
1494 store the kernel image depending on your own flash memory usage.
1495
1496 Also note that the make target becomes "make xipImage" rather than
1497 "make zImage" or "make Image". The final kernel binary to put in
1498 ROM memory will be arch/arm/boot/xipImage.
1499
1500 If unsure, say N.
1501
1502config XIP_PHYS_ADDR
1503 hex "XIP Kernel Physical Location"
1504 depends on XIP_KERNEL
1505 default "0x00080000"
1506 help
1507 This is the physical address in your flash memory the kernel will
1508 be linked for and stored to. This address is dependent on your
1509 own flash usage.
1510
c587e4a6
RP
1511config KEXEC
1512 bool "Kexec system call (EXPERIMENTAL)"
1513 depends on EXPERIMENTAL
1514 help
1515 kexec is a system call that implements the ability to shutdown your
1516 current kernel, and to start another kernel. It is like a reboot
01dd2fbf 1517 but it is independent of the system firmware. And like a reboot
c587e4a6
RP
1518 you can start any kernel with it, not just Linux.
1519
1520 It is an ongoing process to be certain the hardware in a machine
1521 is properly shutdown, so do not be surprised if this code does not
1522 initially work for you. It may help to enable device hotplugging
1523 support.
1524
4cd9d6f7
RP
1525config ATAGS_PROC
1526 bool "Export atags in procfs"
b98d7291
UL
1527 depends on KEXEC
1528 default y
4cd9d6f7
RP
1529 help
1530 Should the atags used to boot the kernel be exported in an "atags"
1531 file in procfs. Useful with kexec.
1532
e69edc79
EM
1533config AUTO_ZRELADDR
1534 bool "Auto calculation of the decompressed kernel image address"
1535 depends on !ZBOOT_ROM && !ARCH_U300
1536 help
1537 ZRELADDR is the physical address where the decompressed kernel
1538 image will be placed. If AUTO_ZRELADDR is selected, the address
1539 will be determined at run-time by masking the current IP with
1540 0xf8000000. This assumes the zImage being placed in the first 128MB
1541 from start of memory.
1542
1543config ZRELADDR
1544 hex "Physical address of the decompressed kernel image"
1545 depends on !AUTO_ZRELADDR
1546 default 0x00008000 if ARCH_BCMRING ||\
1547 ARCH_CNS3XXX ||\
1548 ARCH_DOVE ||\
1549 ARCH_EBSA110 ||\
1550 ARCH_FOOTBRIDGE ||\
1551 ARCH_INTEGRATOR ||\
1552 ARCH_IOP13XX ||\
1553 ARCH_IOP33X ||\
1554 ARCH_IXP2000 ||\
1555 ARCH_IXP23XX ||\
1556 ARCH_IXP4XX ||\
1557 ARCH_KIRKWOOD ||\
1558 ARCH_KS8695 ||\
1559 ARCH_LOKI ||\
1560 ARCH_MMP ||\
1561 ARCH_MV78XX0 ||\
1562 ARCH_NOMADIK ||\
1563 ARCH_NUC93X ||\
1564 ARCH_NS9XXX ||\
1565 ARCH_ORION5X ||\
1566 ARCH_SPEAR3XX ||\
1567 ARCH_SPEAR6XX ||\
1568 ARCH_U8500 ||\
1569 ARCH_VERSATILE ||\
1570 ARCH_W90X900
1571 default 0x08008000 if ARCH_MX1 ||\
1572 ARCH_SHARK
1573 default 0x10008000 if ARCH_MSM ||\
1574 ARCH_OMAP1 ||\
1575 ARCH_RPC
1576 default 0x20008000 if ARCH_S5P6440 ||\
1577 ARCH_S5P6442 ||\
1578 ARCH_S5PC100 ||\
1579 ARCH_S5PV210
1580 default 0x30008000 if ARCH_S3C2410 ||\
1581 ARCH_S3C2400 ||\
1582 ARCH_S3C2412 ||\
1583 ARCH_S3C2416 ||\
1584 ARCH_S3C2440 ||\
1585 ARCH_S3C2443
1586 default 0x40008000 if ARCH_STMP378X ||\
1587 ARCH_STMP37XX ||\
1588 ARCH_SH7372 ||\
1589 ARCH_SH7377
1590 default 0x50008000 if ARCH_S3C64XX ||\
1591 ARCH_SH7367
1592 default 0x60008000 if ARCH_VEXPRESS
1593 default 0x80008000 if ARCH_MX25 ||\
1594 ARCH_MX3 ||\
1595 ARCH_NETX ||\
1596 ARCH_OMAP2PLUS ||\
1597 ARCH_PNX4008
1598 default 0x90008000 if ARCH_MX5 ||\
1599 ARCH_MX91231
1600 default 0xa0008000 if ARCH_IOP32X ||\
1601 ARCH_PXA ||\
1602 MACH_MX27
1603 default 0xc0008000 if ARCH_LH7A40X ||\
1604 MACH_MX21
1605 default 0xf0008000 if ARCH_AAEC2000 ||\
1606 ARCH_L7200
1607 default 0xc0028000 if ARCH_CLPS711X
1608 default 0x70008000 if ARCH_AT91 && (ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1609 default 0x20008000 if ARCH_AT91 && !(ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1610 default 0xc0008000 if ARCH_DAVINCI && ARCH_DAVINCI_DA8XX
1611 default 0x80008000 if ARCH_DAVINCI && !ARCH_DAVINCI_DA8XX
1612 default 0x00008000 if ARCH_EP93XX && EP93XX_SDCE3_SYNC_PHYS_OFFSET
1613 default 0xc0008000 if ARCH_EP93XX && EP93XX_SDCE0_PHYS_OFFSET
1614 default 0xd0008000 if ARCH_EP93XX && EP93XX_SDCE1_PHYS_OFFSET
1615 default 0xe0008000 if ARCH_EP93XX && EP93XX_SDCE2_PHYS_OFFSET
1616 default 0xf0008000 if ARCH_EP93XX && EP93XX_SDCE3_ASYNC_PHYS_OFFSET
1617 default 0x00008000 if ARCH_GEMINI && GEMINI_MEM_SWAP
1618 default 0x10008000 if ARCH_GEMINI && !GEMINI_MEM_SWAP
1619 default 0x70008000 if ARCH_REALVIEW && REALVIEW_HIGH_PHYS_OFFSET
1620 default 0x00008000 if ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET
1621 default 0xc0208000 if ARCH_SA1100 && SA1111
1622 default 0xc0008000 if ARCH_SA1100 && !SA1111
1623 default 0x30108000 if ARCH_S3C2410 && PM_H1940
1624 default 0x28E08000 if ARCH_U300 && MACH_U300_SINGLE_RAM
1625 default 0x48008000 if ARCH_U300 && !MACH_U300_SINGLE_RAM
1626 help
1627 ZRELADDR is the physical address where the decompressed kernel
1628 image will be placed. ZRELADDR has to be specified when the
1629 assumption of AUTO_ZRELADDR is not valid, or when ZBOOT_ROM is
1630 selected.
1631
1da177e4
LT
1632endmenu
1633
ac9d7efc 1634menu "CPU Power Management"
1da177e4 1635
89c52ed4 1636if ARCH_HAS_CPUFREQ
1da177e4
LT
1637
1638source "drivers/cpufreq/Kconfig"
1639
1640config CPU_FREQ_SA1100
1641 bool
1da177e4
LT
1642
1643config CPU_FREQ_SA1110
1644 bool
1da177e4
LT
1645
1646config CPU_FREQ_INTEGRATOR
1647 tristate "CPUfreq driver for ARM Integrator CPUs"
1648 depends on ARCH_INTEGRATOR && CPU_FREQ
1649 default y
1650 help
1651 This enables the CPUfreq driver for ARM Integrator CPUs.
1652
1653 For details, take a look at <file:Documentation/cpu-freq>.
1654
1655 If in doubt, say Y.
1656
9e2697ff
RK
1657config CPU_FREQ_PXA
1658 bool
1659 depends on CPU_FREQ && ARCH_PXA && PXA25x
1660 default y
1661 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1662
b3748ddd
MB
1663config CPU_FREQ_S3C64XX
1664 bool "CPUfreq support for Samsung S3C64XX CPUs"
1665 depends on CPU_FREQ && CPU_S3C6410
1666
9d56c02a
BD
1667config CPU_FREQ_S3C
1668 bool
1669 help
1670 Internal configuration node for common cpufreq on Samsung SoC
1671
1672config CPU_FREQ_S3C24XX
1673 bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1674 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1675 select CPU_FREQ_S3C
1676 help
1677 This enables the CPUfreq driver for the Samsung S3C24XX family
1678 of CPUs.
1679
1680 For details, take a look at <file:Documentation/cpu-freq>.
1681
1682 If in doubt, say N.
1683
1684config CPU_FREQ_S3C24XX_PLL
1685 bool "Support CPUfreq changing of PLL frequency"
1686 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1687 help
1688 Compile in support for changing the PLL frequency from the
1689 S3C24XX series CPUfreq driver. The PLL takes time to settle
1690 after a frequency change, so by default it is not enabled.
1691
1692 This also means that the PLL tables for the selected CPU(s) will
1693 be built which may increase the size of the kernel image.
1694
1695config CPU_FREQ_S3C24XX_DEBUG
1696 bool "Debug CPUfreq Samsung driver core"
1697 depends on CPU_FREQ_S3C24XX
1698 help
1699 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1700
1701config CPU_FREQ_S3C24XX_IODEBUG
1702 bool "Debug CPUfreq Samsung driver IO timing"
1703 depends on CPU_FREQ_S3C24XX
1704 help
1705 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1706
e6d197a6
BD
1707config CPU_FREQ_S3C24XX_DEBUGFS
1708 bool "Export debugfs for CPUFreq"
1709 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1710 help
1711 Export status information via debugfs.
1712
1da177e4
LT
1713endif
1714
ac9d7efc
RK
1715source "drivers/cpuidle/Kconfig"
1716
1717endmenu
1718
1da177e4
LT
1719menu "Floating point emulation"
1720
1721comment "At least one emulation must be selected"
1722
1723config FPE_NWFPE
1724 bool "NWFPE math emulation"
8993a44c 1725 depends on !AEABI || OABI_COMPAT
1da177e4
LT
1726 ---help---
1727 Say Y to include the NWFPE floating point emulator in the kernel.
1728 This is necessary to run most binaries. Linux does not currently
1729 support floating point hardware so you need to say Y here even if
1730 your machine has an FPA or floating point co-processor podule.
1731
1732 You may say N here if you are going to load the Acorn FPEmulator
1733 early in the bootup.
1734
1735config FPE_NWFPE_XP
1736 bool "Support extended precision"
bedf142b 1737 depends on FPE_NWFPE
1da177e4
LT
1738 help
1739 Say Y to include 80-bit support in the kernel floating-point
1740 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1741 Note that gcc does not generate 80-bit operations by default,
1742 so in most cases this option only enlarges the size of the
1743 floating point emulator without any good reason.
1744
1745 You almost surely want to say N here.
1746
1747config FPE_FASTFPE
1748 bool "FastFPE math emulation (EXPERIMENTAL)"
8993a44c 1749 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1da177e4
LT
1750 ---help---
1751 Say Y here to include the FAST floating point emulator in the kernel.
1752 This is an experimental much faster emulator which now also has full
1753 precision for the mantissa. It does not support any exceptions.
1754 It is very simple, and approximately 3-6 times faster than NWFPE.
1755
1756 It should be sufficient for most programs. It may be not suitable
1757 for scientific calculations, but you have to check this for yourself.
1758 If you do not feel you need a faster FP emulation you should better
1759 choose NWFPE.
1760
1761config VFP
1762 bool "VFP-format floating point maths"
c00d4ffd 1763 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
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1764 help
1765 Say Y to include VFP support code in the kernel. This is needed
1766 if your hardware includes a VFP unit.
1767
1768 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1769 release notes and additional status information.
1770
1771 Say N if your target does not have VFP hardware.
1772
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1773config VFPv3
1774 bool
1775 depends on VFP
1776 default y if CPU_V7
1777
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1778config NEON
1779 bool "Advanced SIMD (NEON) Extension support"
1780 depends on VFPv3 && CPU_V7
1781 help
1782 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1783 Extension.
1784
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1785endmenu
1786
1787menu "Userspace binary formats"
1788
1789source "fs/Kconfig.binfmt"
1790
1791config ARTHUR
1792 tristate "RISC OS personality"
704bdda0 1793 depends on !AEABI
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1794 help
1795 Say Y here to include the kernel code necessary if you want to run
1796 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1797 experimental; if this sounds frightening, say N and sleep in peace.
1798 You can also say M here to compile this support as a module (which
1799 will be called arthur).
1800
1801endmenu
1802
1803menu "Power management options"
1804
eceab4ac 1805source "kernel/power/Kconfig"
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1807config ARCH_SUSPEND_POSSIBLE
1808 def_bool y
1809
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1810endmenu
1811
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1812source "net/Kconfig"
1813
ac25150f 1814source "drivers/Kconfig"
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1815
1816source "fs/Kconfig"
1817
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1818source "arch/arm/Kconfig.debug"
1819
1820source "security/Kconfig"
1821
1822source "crypto/Kconfig"
1823
1824source "lib/Kconfig"