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1da177e4
LT
1config ARM
2 bool
3 default y
e17c6d56 4 select HAVE_AOUT
24056f52 5 select HAVE_DMA_API_DEBUG
2064c946 6 select HAVE_IDE
2778f620 7 select HAVE_MEMBLOCK
12b824fb 8 select RTC_LIB
75e7153a 9 select SYS_SUPPORTS_APM_EMULATION
d4c7b1f9 10 select GENERIC_ATOMIC64 if (!CPU_32v6K || !AEABI)
fe166148 11 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
5cbad0eb 12 select HAVE_ARCH_KGDB
ed7c84d5 13 select HAVE_KPROBES if (!XIP_KERNEL && !THUMB2_KERNEL)
9edddaa2 14 select HAVE_KRETPROBES if (HAVE_KPROBES)
606576ce 15 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
80be7a7f
RV
16 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
17 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
0e341af8 18 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
1fe53268 19 select HAVE_GENERIC_DMA_COHERENT
e7db7b42
AT
20 select HAVE_KERNEL_GZIP
21 select HAVE_KERNEL_LZO
6e8699f7 22 select HAVE_KERNEL_LZMA
e360adbe 23 select HAVE_IRQ_WORK
7ada189f
JI
24 select HAVE_PERF_EVENTS
25 select PERF_USE_VMALLOC
e513f8bf 26 select HAVE_REGS_AND_STACK_ACCESS_API
19852e59 27 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V7))
ed60453f 28 select HAVE_C_RECORDMCOUNT
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
0b05da72
HUK
40config MIGHT_HAVE_PCI
41 bool
42
75e7153a
RB
43config SYS_SUPPORTS_APM_EMULATION
44 bool
45
112f38a4
RK
46config HAVE_SCHED_CLOCK
47 bool
48
0a938b97
DB
49config GENERIC_GPIO
50 bool
0a938b97 51
5cfc8ee0
JS
52config ARCH_USES_GETTIMEOFFSET
53 bool
54 default n
746140c7 55
0567a0c0
KH
56config GENERIC_CLOCKEVENTS
57 bool
0567a0c0 58
a8655e83
CM
59config GENERIC_CLOCKEVENTS_BROADCAST
60 bool
61 depends on GENERIC_CLOCKEVENTS
5388a6b2 62 default y if SMP
a8655e83 63
bc581770
LW
64config HAVE_TCM
65 bool
66 select GENERIC_ALLOCATOR
67
e119bfff
RK
68config HAVE_PROC_CPU
69 bool
70
5ea81769
AV
71config NO_IOPORT
72 bool
5ea81769 73
1da177e4
LT
74config EISA
75 bool
76 ---help---
77 The Extended Industry Standard Architecture (EISA) bus was
78 developed as an open alternative to the IBM MicroChannel bus.
79
80 The EISA bus provided some of the features of the IBM MicroChannel
81 bus while maintaining backward compatibility with cards made for
82 the older ISA bus. The EISA bus saw limited use between 1988 and
83 1995 when it was made obsolete by the PCI bus.
84
85 Say Y here if you are building a kernel for an EISA-based machine.
86
87 Otherwise, say N.
88
89config SBUS
90 bool
91
92config MCA
93 bool
94 help
95 MicroChannel Architecture is found in some IBM PS/2 machines and
96 laptops. It is a bus system similar to PCI or ISA. See
97 <file:Documentation/mca.txt> (and especially the web page given
98 there) before attempting to build an MCA bus kernel.
99
4a2581a0
TG
100config GENERIC_HARDIRQS
101 bool
102 default y
103
f16fb1ec
RK
104config STACKTRACE_SUPPORT
105 bool
106 default y
107
f76e9154
NP
108config HAVE_LATENCYTOP_SUPPORT
109 bool
110 depends on !SMP
111 default y
112
f16fb1ec
RK
113config LOCKDEP_SUPPORT
114 bool
115 default y
116
7ad1bcb2
RK
117config TRACE_IRQFLAGS_SUPPORT
118 bool
119 default y
120
4a2581a0
TG
121config HARDIRQS_SW_RESEND
122 bool
123 default y
124
125config GENERIC_IRQ_PROBE
126 bool
127 default y
128
95c354fe
NP
129config GENERIC_LOCKBREAK
130 bool
131 default y
132 depends on SMP && PREEMPT
133
1da177e4
LT
134config RWSEM_GENERIC_SPINLOCK
135 bool
136 default y
137
138config RWSEM_XCHGADD_ALGORITHM
139 bool
140
f0d1b0b3
DH
141config ARCH_HAS_ILOG2_U32
142 bool
f0d1b0b3
DH
143
144config ARCH_HAS_ILOG2_U64
145 bool
f0d1b0b3 146
89c52ed4
BD
147config ARCH_HAS_CPUFREQ
148 bool
149 help
150 Internal node to signify that the ARCH has CPUFREQ support
151 and that the relevant menu configurations are displayed for
152 it.
153
c7b0aff4
KH
154config ARCH_HAS_CPU_IDLE_WAIT
155 def_bool y
156
b89c3b16
AM
157config GENERIC_HWEIGHT
158 bool
159 default y
160
1da177e4
LT
161config GENERIC_CALIBRATE_DELAY
162 bool
163 default y
164
a08b6b79
AV
165config ARCH_MAY_HAVE_PC_FDC
166 bool
167
5ac6da66
CL
168config ZONE_DMA
169 bool
5ac6da66 170
ccd7ab7f
FT
171config NEED_DMA_MAP_STATE
172 def_bool y
173
1da177e4
LT
174config GENERIC_ISA_DMA
175 bool
176
1da177e4
LT
177config FIQ
178 bool
179
034d2f5a
AV
180config ARCH_MTD_XIP
181 bool
182
60a752ef 183config GENERIC_HARDIRQS_NO__DO_IRQ
60a752ef
PZ
184 def_bool y
185
d6d502fa
KK
186config ARM_L1_CACHE_SHIFT_6
187 bool
188 help
189 Setting ARM L1 cache line size to 64 Bytes.
190
c760fc19
HC
191config VECTORS_BASE
192 hex
6afd6fae 193 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
c760fc19
HC
194 default DRAM_BASE if REMAP_VECTORS_TO_RAM
195 default 0x00000000
196 help
197 The base address of exception vectors.
198
1da177e4
LT
199source "init/Kconfig"
200
dc52ddc0
MH
201source "kernel/Kconfig.freezer"
202
1da177e4
LT
203menu "System Type"
204
3c427975
HC
205config MMU
206 bool "MMU-based Paged Memory Management Support"
207 default y
208 help
209 Select if you want MMU-based virtualised addressing space
210 support by paged memory management. If unsure, say 'Y'.
211
ccf50e23
RK
212#
213# The "ARM system type" choice list is ordered alphabetically by option
214# text. Please add new entries in the option alphabetic order.
215#
1da177e4
LT
216choice
217 prompt "ARM system type"
6a0e2430 218 default ARCH_VERSATILE
1da177e4 219
4af6fee1
DS
220config ARCH_AAEC2000
221 bool "Agilent AAEC-2000 based"
c750815e 222 select CPU_ARM920T
4af6fee1 223 select ARM_AMBA
9483a578 224 select HAVE_CLK
5cfc8ee0 225 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
226 help
227 This enables support for systems based on the Agilent AAEC-2000
228
229config ARCH_INTEGRATOR
230 bool "ARM Ltd. Integrator family"
231 select ARM_AMBA
89c52ed4 232 select ARCH_HAS_CPUFREQ
6d803ba7 233 select CLKDEV_LOOKUP
c5a0adb5 234 select ICST
13edd86d 235 select GENERIC_CLOCKEVENTS
f4b8b319 236 select PLAT_VERSATILE
4af6fee1
DS
237 help
238 Support for ARM's Integrator platform.
239
240config ARCH_REALVIEW
241 bool "ARM Ltd. RealView family"
242 select ARM_AMBA
6d803ba7 243 select CLKDEV_LOOKUP
1da0c89c 244 select HAVE_SCHED_CLOCK
c5a0adb5 245 select ICST
ae30ceac 246 select GENERIC_CLOCKEVENTS
eb7fffa3 247 select ARCH_WANT_OPTIONAL_GPIOLIB
f4b8b319 248 select PLAT_VERSATILE
e3887714 249 select ARM_TIMER_SP804
b56ba8aa 250 select GPIO_PL061 if GPIOLIB
4af6fee1
DS
251 help
252 This enables support for ARM Ltd RealView boards.
253
254config ARCH_VERSATILE
255 bool "ARM Ltd. Versatile family"
256 select ARM_AMBA
257 select ARM_VIC
6d803ba7 258 select CLKDEV_LOOKUP
1da0c89c 259 select HAVE_SCHED_CLOCK
c5a0adb5 260 select ICST
89df1272 261 select GENERIC_CLOCKEVENTS
bbeddc43 262 select ARCH_WANT_OPTIONAL_GPIOLIB
f4b8b319 263 select PLAT_VERSATILE
e3887714 264 select ARM_TIMER_SP804
4af6fee1
DS
265 help
266 This enables support for ARM Ltd Versatile board.
267
ceade897
RK
268config ARCH_VEXPRESS
269 bool "ARM Ltd. Versatile Express family"
270 select ARCH_WANT_OPTIONAL_GPIOLIB
271 select ARM_AMBA
272 select ARM_TIMER_SP804
6d803ba7 273 select CLKDEV_LOOKUP
ceade897 274 select GENERIC_CLOCKEVENTS
ceade897 275 select HAVE_CLK
0af85dda 276 select HAVE_SCHED_CLOCK
ceade897
RK
277 select ICST
278 select PLAT_VERSATILE
279 help
280 This enables support for the ARM Ltd Versatile Express boards.
281
8fc5ffa0
AV
282config ARCH_AT91
283 bool "Atmel AT91"
f373e8c0 284 select ARCH_REQUIRE_GPIOLIB
93686ae8 285 select HAVE_CLK
4af6fee1 286 help
2b3b3516
AV
287 This enables support for systems based on the Atmel AT91RM9200,
288 AT91SAM9 and AT91CAP9 processors.
4af6fee1 289
ccf50e23
RK
290config ARCH_BCMRING
291 bool "Broadcom BCMRING"
292 depends on MMU
293 select CPU_V6
294 select ARM_AMBA
6d803ba7 295 select CLKDEV_LOOKUP
ccf50e23
RK
296 select GENERIC_CLOCKEVENTS
297 select ARCH_WANT_OPTIONAL_GPIOLIB
298 help
299 Support for Broadcom's BCMRing platform.
300
1da177e4 301config ARCH_CLPS711X
4af6fee1 302 bool "Cirrus Logic CLPS711x/EP721x-based"
c750815e 303 select CPU_ARM720T
5cfc8ee0 304 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
305 help
306 Support for Cirrus Logic 711x/721x based boards.
1da177e4 307
d94f944e
AV
308config ARCH_CNS3XXX
309 bool "Cavium Networks CNS3XXX family"
310 select CPU_V6
d94f944e
AV
311 select GENERIC_CLOCKEVENTS
312 select ARM_GIC
0b05da72 313 select MIGHT_HAVE_PCI
5f32f7a0 314 select PCI_DOMAINS if PCI
d94f944e
AV
315 help
316 Support for Cavium Networks CNS3XXX platform.
317
788c9700
RK
318config ARCH_GEMINI
319 bool "Cortina Systems Gemini"
320 select CPU_FA526
788c9700 321 select ARCH_REQUIRE_GPIOLIB
5cfc8ee0 322 select ARCH_USES_GETTIMEOFFSET
788c9700
RK
323 help
324 Support for the Cortina Systems Gemini family SoCs
325
1da177e4
LT
326config ARCH_EBSA110
327 bool "EBSA-110"
c750815e 328 select CPU_SA110
f7e68bbf 329 select ISA
c5eb2a2b 330 select NO_IOPORT
5cfc8ee0 331 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
332 help
333 This is an evaluation board for the StrongARM processor available
f6c8965a 334 from Digital. It has limited hardware on-board, including an
1da177e4
LT
335 Ethernet interface, two PCMCIA sockets, two serial ports and a
336 parallel port.
337
e7736d47
LB
338config ARCH_EP93XX
339 bool "EP93xx-based"
c750815e 340 select CPU_ARM920T
e7736d47
LB
341 select ARM_AMBA
342 select ARM_VIC
6d803ba7 343 select CLKDEV_LOOKUP
7444a72e 344 select ARCH_REQUIRE_GPIOLIB
eb33575c 345 select ARCH_HAS_HOLES_MEMORYMODEL
5cfc8ee0 346 select ARCH_USES_GETTIMEOFFSET
e7736d47
LB
347 help
348 This enables support for the Cirrus EP93xx series of CPUs.
349
1da177e4
LT
350config ARCH_FOOTBRIDGE
351 bool "FootBridge"
c750815e 352 select CPU_SA110
1da177e4 353 select FOOTBRIDGE
5cfc8ee0 354 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
355 help
356 Support for systems based on the DC21285 companion chip
357 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1da177e4 358
788c9700
RK
359config ARCH_MXC
360 bool "Freescale MXC/iMX-based"
788c9700 361 select GENERIC_CLOCKEVENTS
788c9700 362 select ARCH_REQUIRE_GPIOLIB
6d803ba7 363 select CLKDEV_LOOKUP
788c9700
RK
364 help
365 Support for Freescale MXC/iMX-based family of processors
366
1d3f33d5
SG
367config ARCH_MXS
368 bool "Freescale MXS-based"
369 select GENERIC_CLOCKEVENTS
370 select ARCH_REQUIRE_GPIOLIB
371 select COMMON_CLKDEV
372 help
373 Support for Freescale MXS-based family of processors
374
7bd0f2f5 375config ARCH_STMP3XXX
376 bool "Freescale STMP3xxx"
377 select CPU_ARM926T
6d803ba7 378 select CLKDEV_LOOKUP
7bd0f2f5 379 select ARCH_REQUIRE_GPIOLIB
7bd0f2f5 380 select GENERIC_CLOCKEVENTS
7bd0f2f5 381 select USB_ARCH_HAS_EHCI
382 help
383 Support for systems based on the Freescale 3xxx CPUs.
384
4af6fee1
DS
385config ARCH_NETX
386 bool "Hilscher NetX based"
c750815e 387 select CPU_ARM926T
4af6fee1 388 select ARM_VIC
2fcfe6b8 389 select GENERIC_CLOCKEVENTS
f999b8bd 390 help
4af6fee1
DS
391 This enables support for systems based on the Hilscher NetX Soc
392
393config ARCH_H720X
394 bool "Hynix HMS720x-based"
c750815e 395 select CPU_ARM720T
4af6fee1 396 select ISA_DMA_API
5cfc8ee0 397 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
398 help
399 This enables support for systems based on the Hynix HMS720x
400
3b938be6
RK
401config ARCH_IOP13XX
402 bool "IOP13xx-based"
403 depends on MMU
c750815e 404 select CPU_XSC3
3b938be6
RK
405 select PLAT_IOP
406 select PCI
407 select ARCH_SUPPORTS_MSI
8d5796d2 408 select VMSPLIT_1G
3b938be6
RK
409 help
410 Support for Intel's IOP13XX (XScale) family of processors.
411
3f7e5815
LB
412config ARCH_IOP32X
413 bool "IOP32x-based"
a4f7e763 414 depends on MMU
c750815e 415 select CPU_XSCALE
7ae1f7ec 416 select PLAT_IOP
f7e68bbf 417 select PCI
bb2b180c 418 select ARCH_REQUIRE_GPIOLIB
f999b8bd 419 help
3f7e5815
LB
420 Support for Intel's 80219 and IOP32X (XScale) family of
421 processors.
422
423config ARCH_IOP33X
424 bool "IOP33x-based"
425 depends on MMU
c750815e 426 select CPU_XSCALE
7ae1f7ec 427 select PLAT_IOP
3f7e5815 428 select PCI
bb2b180c 429 select ARCH_REQUIRE_GPIOLIB
3f7e5815
LB
430 help
431 Support for Intel's IOP33X (XScale) family of processors.
1da177e4 432
3b938be6
RK
433config ARCH_IXP23XX
434 bool "IXP23XX-based"
a4f7e763 435 depends on MMU
c750815e 436 select CPU_XSC3
3b938be6 437 select PCI
5cfc8ee0 438 select ARCH_USES_GETTIMEOFFSET
f999b8bd 439 help
3b938be6 440 Support for Intel's IXP23xx (XScale) family of processors.
1da177e4
LT
441
442config ARCH_IXP2000
443 bool "IXP2400/2800-based"
a4f7e763 444 depends on MMU
c750815e 445 select CPU_XSCALE
f7e68bbf 446 select PCI
5cfc8ee0 447 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
448 help
449 Support for Intel's IXP2400/2800 (XScale) family of processors.
1da177e4 450
3b938be6
RK
451config ARCH_IXP4XX
452 bool "IXP4xx-based"
a4f7e763 453 depends on MMU
c750815e 454 select CPU_XSCALE
8858e9af 455 select GENERIC_GPIO
3b938be6 456 select GENERIC_CLOCKEVENTS
5b0d495c 457 select HAVE_SCHED_CLOCK
0b05da72 458 select MIGHT_HAVE_PCI
485bdde7 459 select DMABOUNCE if PCI
c4713074 460 help
3b938be6 461 Support for Intel's IXP4XX (XScale) family of processors.
c4713074 462
edabd38e
SB
463config ARCH_DOVE
464 bool "Marvell Dove"
465 select PCI
edabd38e 466 select ARCH_REQUIRE_GPIOLIB
edabd38e
SB
467 select GENERIC_CLOCKEVENTS
468 select PLAT_ORION
469 help
470 Support for the Marvell Dove SoC 88AP510
471
651c74c7
SB
472config ARCH_KIRKWOOD
473 bool "Marvell Kirkwood"
c750815e 474 select CPU_FEROCEON
651c74c7 475 select PCI
a8865655 476 select ARCH_REQUIRE_GPIOLIB
651c74c7
SB
477 select GENERIC_CLOCKEVENTS
478 select PLAT_ORION
479 help
480 Support for the following Marvell Kirkwood series SoCs:
481 88F6180, 88F6192 and 88F6281.
482
777f9beb
LB
483config ARCH_LOKI
484 bool "Marvell Loki (88RC8480)"
c750815e 485 select CPU_FEROCEON
777f9beb
LB
486 select GENERIC_CLOCKEVENTS
487 select PLAT_ORION
488 help
489 Support for the Marvell Loki (88RC8480) SoC.
490
40805949
KW
491config ARCH_LPC32XX
492 bool "NXP LPC32XX"
493 select CPU_ARM926T
494 select ARCH_REQUIRE_GPIOLIB
495 select HAVE_IDE
496 select ARM_AMBA
497 select USB_ARCH_HAS_OHCI
6d803ba7 498 select CLKDEV_LOOKUP
40805949
KW
499 select GENERIC_TIME
500 select GENERIC_CLOCKEVENTS
501 help
502 Support for the NXP LPC32XX family of processors
503
794d15b2
SS
504config ARCH_MV78XX0
505 bool "Marvell MV78xx0"
c750815e 506 select CPU_FEROCEON
794d15b2 507 select PCI
a8865655 508 select ARCH_REQUIRE_GPIOLIB
794d15b2
SS
509 select GENERIC_CLOCKEVENTS
510 select PLAT_ORION
511 help
512 Support for the following Marvell MV78xx0 series SoCs:
513 MV781x0, MV782x0.
514
9dd0b194 515config ARCH_ORION5X
585cf175
TP
516 bool "Marvell Orion"
517 depends on MMU
c750815e 518 select CPU_FEROCEON
038ee083 519 select PCI
a8865655 520 select ARCH_REQUIRE_GPIOLIB
51cbff1d 521 select GENERIC_CLOCKEVENTS
69b02f6a 522 select PLAT_ORION
585cf175 523 help
9dd0b194 524 Support for the following Marvell Orion 5x series SoCs:
d2b2a6bb 525 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
d323ade1 526 Orion-2 (5281), Orion-1-90 (6183).
585cf175 527
788c9700 528config ARCH_MMP
2f7e8fae 529 bool "Marvell PXA168/910/MMP2"
788c9700 530 depends on MMU
788c9700 531 select ARCH_REQUIRE_GPIOLIB
6d803ba7 532 select CLKDEV_LOOKUP
788c9700 533 select GENERIC_CLOCKEVENTS
28bb7bc6 534 select HAVE_SCHED_CLOCK
788c9700
RK
535 select TICK_ONESHOT
536 select PLAT_PXA
0bd86961 537 select SPARSE_IRQ
788c9700 538 help
2f7e8fae 539 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
788c9700
RK
540
541config ARCH_KS8695
542 bool "Micrel/Kendin KS8695"
543 select CPU_ARM922T
98830bc9 544 select ARCH_REQUIRE_GPIOLIB
5cfc8ee0 545 select ARCH_USES_GETTIMEOFFSET
788c9700
RK
546 help
547 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
548 System-on-Chip devices.
549
550config ARCH_NS9XXX
551 bool "NetSilicon NS9xxx"
552 select CPU_ARM926T
553 select GENERIC_GPIO
788c9700
RK
554 select GENERIC_CLOCKEVENTS
555 select HAVE_CLK
556 help
557 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
558 System.
559
560 <http://www.digi.com/products/microprocessors/index.jsp>
561
562config ARCH_W90X900
563 bool "Nuvoton W90X900 CPU"
564 select CPU_ARM926T
c52d3d68 565 select ARCH_REQUIRE_GPIOLIB
6d803ba7 566 select CLKDEV_LOOKUP
58b5369e 567 select GENERIC_CLOCKEVENTS
788c9700 568 help
a8bc4ead 569 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
570 At present, the w90x900 has been renamed nuc900, regarding
571 the ARM series product line, you can login the following
572 link address to know more.
573
574 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
575 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
788c9700 576
a62e9030 577config ARCH_NUC93X
578 bool "Nuvoton NUC93X CPU"
579 select CPU_ARM926T
6d803ba7 580 select CLKDEV_LOOKUP
a62e9030 581 help
582 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
583 low-power and high performance MPEG-4/JPEG multimedia controller chip.
584
c5f80065
EG
585config ARCH_TEGRA
586 bool "NVIDIA Tegra"
4073723a 587 select CLKDEV_LOOKUP
c5f80065
EG
588 select GENERIC_TIME
589 select GENERIC_CLOCKEVENTS
590 select GENERIC_GPIO
591 select HAVE_CLK
e3f4c0ab 592 select HAVE_SCHED_CLOCK
c5f80065 593 select ARCH_HAS_BARRIERS if CACHE_L2X0
7056d423 594 select ARCH_HAS_CPUFREQ
c5f80065
EG
595 help
596 This enables support for NVIDIA Tegra based systems (Tegra APX,
597 Tegra 6xx and Tegra 2 series).
598
4af6fee1
DS
599config ARCH_PNX4008
600 bool "Philips Nexperia PNX4008 Mobile"
c750815e 601 select CPU_ARM926T
6d803ba7 602 select CLKDEV_LOOKUP
5cfc8ee0 603 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
604 help
605 This enables support for Philips PNX4008 mobile platform.
606
1da177e4 607config ARCH_PXA
2c8086a5 608 bool "PXA2xx/PXA3xx-based"
a4f7e763 609 depends on MMU
034d2f5a 610 select ARCH_MTD_XIP
89c52ed4 611 select ARCH_HAS_CPUFREQ
6d803ba7 612 select CLKDEV_LOOKUP
7444a72e 613 select ARCH_REQUIRE_GPIOLIB
981d0f39 614 select GENERIC_CLOCKEVENTS
7ce83018 615 select HAVE_SCHED_CLOCK
a88264c2 616 select TICK_ONESHOT
bd5ce433 617 select PLAT_PXA
6ac6b817 618 select SPARSE_IRQ
f999b8bd 619 help
2c8086a5 620 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
1da177e4 621
788c9700
RK
622config ARCH_MSM
623 bool "Qualcomm MSM"
4b536b8d 624 select HAVE_CLK
49cbe786 625 select GENERIC_CLOCKEVENTS
923a081c 626 select ARCH_REQUIRE_GPIOLIB
49cbe786 627 help
4b53eb4f
DW
628 Support for Qualcomm MSM/QSD based systems. This runs on the
629 apps processor of the MSM/QSD and depends on a shared memory
630 interface to the modem processor which runs the baseband
631 stack and controls some vital subsystems
632 (clock and power control, etc).
49cbe786 633
c793c1b0 634config ARCH_SHMOBILE
6d72ad35
PM
635 bool "Renesas SH-Mobile / R-Mobile"
636 select HAVE_CLK
5e93c6b4 637 select CLKDEV_LOOKUP
6d72ad35
PM
638 select GENERIC_CLOCKEVENTS
639 select NO_IOPORT
640 select SPARSE_IRQ
60f1435c 641 select MULTI_IRQ_HANDLER
c793c1b0 642 help
6d72ad35 643 Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
c793c1b0 644
1da177e4
LT
645config ARCH_RPC
646 bool "RiscPC"
647 select ARCH_ACORN
648 select FIQ
649 select TIMER_ACORN
a08b6b79 650 select ARCH_MAY_HAVE_PC_FDC
341eb781 651 select HAVE_PATA_PLATFORM
065909b9 652 select ISA_DMA_API
5ea81769 653 select NO_IOPORT
07f841b7 654 select ARCH_SPARSEMEM_ENABLE
5cfc8ee0 655 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
656 help
657 On the Acorn Risc-PC, Linux can support the internal IDE disk and
658 CD-ROM interface, serial and parallel port, and the floppy drive.
659
660config ARCH_SA1100
661 bool "SA1100-based"
c750815e 662 select CPU_SA1100
f7e68bbf 663 select ISA
05944d74 664 select ARCH_SPARSEMEM_ENABLE
034d2f5a 665 select ARCH_MTD_XIP
89c52ed4 666 select ARCH_HAS_CPUFREQ
1937f5b9 667 select CPU_FREQ
3e238be2 668 select GENERIC_CLOCKEVENTS
9483a578 669 select HAVE_CLK
5094b92f 670 select HAVE_SCHED_CLOCK
3e238be2 671 select TICK_ONESHOT
7444a72e 672 select ARCH_REQUIRE_GPIOLIB
f999b8bd
MM
673 help
674 Support for StrongARM 11x0 based boards.
1da177e4
LT
675
676config ARCH_S3C2410
63b1f51b 677 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
0a938b97 678 select GENERIC_GPIO
9d56c02a 679 select ARCH_HAS_CPUFREQ
9483a578 680 select HAVE_CLK
5cfc8ee0 681 select ARCH_USES_GETTIMEOFFSET
20676c15 682 select HAVE_S3C2410_I2C if I2C
1da177e4
LT
683 help
684 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
685 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
f6c8965a 686 the Samsung SMDK2410 development board (and derivatives).
1da177e4 687
63b1f51b
BD
688 Note, the S3C2416 and the S3C2450 are so close that they even share
689 the same SoC ID code. This means that there is no seperate machine
690 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
691
a08ab637
BD
692config ARCH_S3C64XX
693 bool "Samsung S3C64XX"
89f1fa08 694 select PLAT_SAMSUNG
89f0ce72 695 select CPU_V6
89f0ce72 696 select ARM_VIC
a08ab637 697 select HAVE_CLK
89f0ce72 698 select NO_IOPORT
5cfc8ee0 699 select ARCH_USES_GETTIMEOFFSET
89c52ed4 700 select ARCH_HAS_CPUFREQ
89f0ce72
BD
701 select ARCH_REQUIRE_GPIOLIB
702 select SAMSUNG_CLKSRC
703 select SAMSUNG_IRQ_VIC_TIMER
704 select SAMSUNG_IRQ_UART
705 select S3C_GPIO_TRACK
706 select S3C_GPIO_PULL_UPDOWN
707 select S3C_GPIO_CFG_S3C24XX
708 select S3C_GPIO_CFG_S3C64XX
709 select S3C_DEV_NAND
710 select USB_ARCH_HAS_OHCI
711 select SAMSUNG_GPIOLIB_4BIT
20676c15 712 select HAVE_S3C2410_I2C if I2C
c39d8d55 713 select HAVE_S3C2410_WATCHDOG if WATCHDOG
a08ab637
BD
714 help
715 Samsung S3C64XX series based systems
716
49b7a491
KK
717config ARCH_S5P64X0
718 bool "Samsung S5P6440 S5P6450"
c4ffccdd
KK
719 select CPU_V6
720 select GENERIC_GPIO
721 select HAVE_CLK
c39d8d55 722 select HAVE_S3C2410_WATCHDOG if WATCHDOG
925c68cd 723 select ARCH_USES_GETTIMEOFFSET
20676c15 724 select HAVE_S3C2410_I2C if I2C
754961a8 725 select HAVE_S3C_RTC if RTC_CLASS
c4ffccdd 726 help
49b7a491
KK
727 Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
728 SMDK6450.
c4ffccdd 729
550db7f1
KK
730config ARCH_S5P6442
731 bool "Samsung S5P6442"
732 select CPU_V6
733 select GENERIC_GPIO
734 select HAVE_CLK
925c68cd 735 select ARCH_USES_GETTIMEOFFSET
c39d8d55 736 select HAVE_S3C2410_WATCHDOG if WATCHDOG
550db7f1
KK
737 help
738 Samsung S5P6442 CPU based systems
739
acc84707
MS
740config ARCH_S5PC100
741 bool "Samsung S5PC100"
5a7652f2
BM
742 select GENERIC_GPIO
743 select HAVE_CLK
744 select CPU_V7
d6d502fa 745 select ARM_L1_CACHE_SHIFT_6
925c68cd 746 select ARCH_USES_GETTIMEOFFSET
20676c15 747 select HAVE_S3C2410_I2C if I2C
754961a8 748 select HAVE_S3C_RTC if RTC_CLASS
c39d8d55 749 select HAVE_S3C2410_WATCHDOG if WATCHDOG
5a7652f2 750 help
acc84707 751 Samsung S5PC100 series based systems
5a7652f2 752
170f4e42
KK
753config ARCH_S5PV210
754 bool "Samsung S5PV210/S5PC110"
755 select CPU_V7
eecb6a84 756 select ARCH_SPARSEMEM_ENABLE
170f4e42
KK
757 select GENERIC_GPIO
758 select HAVE_CLK
759 select ARM_L1_CACHE_SHIFT_6
d8144aea 760 select ARCH_HAS_CPUFREQ
925c68cd 761 select ARCH_USES_GETTIMEOFFSET
20676c15 762 select HAVE_S3C2410_I2C if I2C
754961a8 763 select HAVE_S3C_RTC if RTC_CLASS
c39d8d55 764 select HAVE_S3C2410_WATCHDOG if WATCHDOG
170f4e42
KK
765 help
766 Samsung S5PV210/S5PC110 series based systems
767
cc0e72b8
CY
768config ARCH_S5PV310
769 bool "Samsung S5PV310/S5PC210"
770 select CPU_V7
f567fa6f 771 select ARCH_SPARSEMEM_ENABLE
cc0e72b8
CY
772 select GENERIC_GPIO
773 select HAVE_CLK
774 select GENERIC_CLOCKEVENTS
754961a8 775 select HAVE_S3C_RTC if RTC_CLASS
20676c15 776 select HAVE_S3C2410_I2C if I2C
c39d8d55 777 select HAVE_S3C2410_WATCHDOG if WATCHDOG
cc0e72b8
CY
778 help
779 Samsung S5PV310 series based systems
780
1da177e4
LT
781config ARCH_SHARK
782 bool "Shark"
c750815e 783 select CPU_SA110
f7e68bbf
RK
784 select ISA
785 select ISA_DMA
3bca103a 786 select ZONE_DMA
f7e68bbf 787 select PCI
5cfc8ee0 788 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
789 help
790 Support for the StrongARM based Digital DNARD machine, also known
791 as "Shark" (<http://www.shark-linux.de/shark.html>).
1da177e4 792
83ef3338
HK
793config ARCH_TCC_926
794 bool "Telechips TCC ARM926-based systems"
795 select CPU_ARM926T
796 select HAVE_CLK
6d803ba7 797 select CLKDEV_LOOKUP
83ef3338
HK
798 select GENERIC_CLOCKEVENTS
799 help
800 Support for Telechips TCC ARM926-based systems.
801
1da177e4
LT
802config ARCH_LH7A40X
803 bool "Sharp LH7A40X"
c750815e 804 select CPU_ARM922T
4ba3f7c5 805 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
5cfc8ee0 806 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
807 help
808 Say Y here for systems based on one of the Sharp LH7A40X
809 System on a Chip processors. These CPUs include an ARM922T
810 core with a wide array of integrated devices for
811 hand-held and low-power applications.
812
d98aac75
LW
813config ARCH_U300
814 bool "ST-Ericsson U300 Series"
815 depends on MMU
816 select CPU_ARM926T
5c21b7ca 817 select HAVE_SCHED_CLOCK
bc581770 818 select HAVE_TCM
d98aac75
LW
819 select ARM_AMBA
820 select ARM_VIC
d98aac75 821 select GENERIC_CLOCKEVENTS
6d803ba7 822 select CLKDEV_LOOKUP
d98aac75
LW
823 select GENERIC_GPIO
824 help
825 Support for ST-Ericsson U300 series mobile platforms.
826
ccf50e23
RK
827config ARCH_U8500
828 bool "ST-Ericsson U8500 Series"
829 select CPU_V7
830 select ARM_AMBA
ccf50e23 831 select GENERIC_CLOCKEVENTS
6d803ba7 832 select CLKDEV_LOOKUP
94bdc0e2 833 select ARCH_REQUIRE_GPIOLIB
7c1a70e9 834 select ARCH_HAS_CPUFREQ
ccf50e23
RK
835 help
836 Support for ST-Ericsson's Ux500 architecture
837
838config ARCH_NOMADIK
839 bool "STMicroelectronics Nomadik"
840 select ARM_AMBA
841 select ARM_VIC
842 select CPU_ARM926T
6d803ba7 843 select CLKDEV_LOOKUP
ccf50e23 844 select GENERIC_CLOCKEVENTS
ccf50e23
RK
845 select ARCH_REQUIRE_GPIOLIB
846 help
847 Support for the Nomadik platform by ST-Ericsson
848
7c6337e2
KH
849config ARCH_DAVINCI
850 bool "TI DaVinci"
7c6337e2 851 select GENERIC_CLOCKEVENTS
dce1115b 852 select ARCH_REQUIRE_GPIOLIB
3bca103a 853 select ZONE_DMA
9232fcc9 854 select HAVE_IDE
6d803ba7 855 select CLKDEV_LOOKUP
20e9969b 856 select GENERIC_ALLOCATOR
ae88e05a 857 select ARCH_HAS_HOLES_MEMORYMODEL
7c6337e2
KH
858 help
859 Support for TI's DaVinci platform.
860
3b938be6
RK
861config ARCH_OMAP
862 bool "TI OMAP"
9483a578 863 select HAVE_CLK
7444a72e 864 select ARCH_REQUIRE_GPIOLIB
89c52ed4 865 select ARCH_HAS_CPUFREQ
06cad098 866 select GENERIC_CLOCKEVENTS
dc548fbb 867 select HAVE_SCHED_CLOCK
9af915da 868 select ARCH_HAS_HOLES_MEMORYMODEL
3b938be6 869 help
6e457bb0 870 Support for TI's OMAP platform (OMAP1/2/3/4).
3b938be6 871
cee37e50
VK
872config PLAT_SPEAR
873 bool "ST SPEAr"
874 select ARM_AMBA
875 select ARCH_REQUIRE_GPIOLIB
6d803ba7 876 select CLKDEV_LOOKUP
cee37e50 877 select GENERIC_CLOCKEVENTS
cee37e50
VK
878 select HAVE_CLK
879 help
880 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
881
1da177e4
LT
882endchoice
883
ccf50e23
RK
884#
885# This is sorted alphabetically by mach-* pathname. However, plat-*
886# Kconfigs may be included either alphabetically (according to the
887# plat- suffix) or along side the corresponding mach-* source.
888#
95b8f20f
RK
889source "arch/arm/mach-aaec2000/Kconfig"
890
891source "arch/arm/mach-at91/Kconfig"
892
893source "arch/arm/mach-bcmring/Kconfig"
894
1da177e4
LT
895source "arch/arm/mach-clps711x/Kconfig"
896
d94f944e
AV
897source "arch/arm/mach-cns3xxx/Kconfig"
898
95b8f20f
RK
899source "arch/arm/mach-davinci/Kconfig"
900
901source "arch/arm/mach-dove/Kconfig"
902
e7736d47
LB
903source "arch/arm/mach-ep93xx/Kconfig"
904
1da177e4
LT
905source "arch/arm/mach-footbridge/Kconfig"
906
59d3a193
PZ
907source "arch/arm/mach-gemini/Kconfig"
908
95b8f20f
RK
909source "arch/arm/mach-h720x/Kconfig"
910
1da177e4
LT
911source "arch/arm/mach-integrator/Kconfig"
912
3f7e5815
LB
913source "arch/arm/mach-iop32x/Kconfig"
914
915source "arch/arm/mach-iop33x/Kconfig"
1da177e4 916
285f5fa7
DW
917source "arch/arm/mach-iop13xx/Kconfig"
918
1da177e4
LT
919source "arch/arm/mach-ixp4xx/Kconfig"
920
921source "arch/arm/mach-ixp2000/Kconfig"
922
c4713074
LB
923source "arch/arm/mach-ixp23xx/Kconfig"
924
95b8f20f
RK
925source "arch/arm/mach-kirkwood/Kconfig"
926
927source "arch/arm/mach-ks8695/Kconfig"
928
929source "arch/arm/mach-lh7a40x/Kconfig"
930
777f9beb
LB
931source "arch/arm/mach-loki/Kconfig"
932
40805949
KW
933source "arch/arm/mach-lpc32xx/Kconfig"
934
95b8f20f
RK
935source "arch/arm/mach-msm/Kconfig"
936
794d15b2
SS
937source "arch/arm/mach-mv78xx0/Kconfig"
938
95b8f20f 939source "arch/arm/plat-mxc/Kconfig"
1da177e4 940
1d3f33d5
SG
941source "arch/arm/mach-mxs/Kconfig"
942
95b8f20f 943source "arch/arm/mach-netx/Kconfig"
49cbe786 944
95b8f20f
RK
945source "arch/arm/mach-nomadik/Kconfig"
946source "arch/arm/plat-nomadik/Kconfig"
947
948source "arch/arm/mach-ns9xxx/Kconfig"
1da177e4 949
186f93ea 950source "arch/arm/mach-nuc93x/Kconfig"
1da177e4 951
d48af15e
TL
952source "arch/arm/plat-omap/Kconfig"
953
954source "arch/arm/mach-omap1/Kconfig"
1da177e4 955
1dbae815
TL
956source "arch/arm/mach-omap2/Kconfig"
957
9dd0b194 958source "arch/arm/mach-orion5x/Kconfig"
585cf175 959
95b8f20f
RK
960source "arch/arm/mach-pxa/Kconfig"
961source "arch/arm/plat-pxa/Kconfig"
585cf175 962
95b8f20f
RK
963source "arch/arm/mach-mmp/Kconfig"
964
965source "arch/arm/mach-realview/Kconfig"
966
967source "arch/arm/mach-sa1100/Kconfig"
edabd38e 968
cf383678 969source "arch/arm/plat-samsung/Kconfig"
a21765a7 970source "arch/arm/plat-s3c24xx/Kconfig"
c4ffccdd 971source "arch/arm/plat-s5p/Kconfig"
a21765a7 972
cee37e50 973source "arch/arm/plat-spear/Kconfig"
a21765a7 974
83ef3338
HK
975source "arch/arm/plat-tcc/Kconfig"
976
a21765a7
BD
977if ARCH_S3C2410
978source "arch/arm/mach-s3c2400/Kconfig"
1da177e4 979source "arch/arm/mach-s3c2410/Kconfig"
a21765a7 980source "arch/arm/mach-s3c2412/Kconfig"
f1290a49 981source "arch/arm/mach-s3c2416/Kconfig"
a21765a7 982source "arch/arm/mach-s3c2440/Kconfig"
e4d06e39 983source "arch/arm/mach-s3c2443/Kconfig"
a21765a7 984endif
1da177e4 985
a08ab637 986if ARCH_S3C64XX
431107ea 987source "arch/arm/mach-s3c64xx/Kconfig"
a08ab637
BD
988endif
989
49b7a491 990source "arch/arm/mach-s5p64x0/Kconfig"
c4ffccdd 991
550db7f1 992source "arch/arm/mach-s5p6442/Kconfig"
7bd0f2f5 993
5a7652f2 994source "arch/arm/mach-s5pc100/Kconfig"
5a7652f2 995
170f4e42
KK
996source "arch/arm/mach-s5pv210/Kconfig"
997
cc0e72b8
CY
998source "arch/arm/mach-s5pv310/Kconfig"
999
882d01f9 1000source "arch/arm/mach-shmobile/Kconfig"
52c543f9 1001
882d01f9 1002source "arch/arm/plat-stmp3xxx/Kconfig"
9e73c84c 1003
c5f80065
EG
1004source "arch/arm/mach-tegra/Kconfig"
1005
95b8f20f 1006source "arch/arm/mach-u300/Kconfig"
1da177e4 1007
95b8f20f 1008source "arch/arm/mach-ux500/Kconfig"
1da177e4
LT
1009
1010source "arch/arm/mach-versatile/Kconfig"
1011
ceade897
RK
1012source "arch/arm/mach-vexpress/Kconfig"
1013
7ec80ddf 1014source "arch/arm/mach-w90x900/Kconfig"
1015
1da177e4
LT
1016# Definitions to make life easier
1017config ARCH_ACORN
1018 bool
1019
7ae1f7ec
LB
1020config PLAT_IOP
1021 bool
469d3044 1022 select GENERIC_CLOCKEVENTS
08f26b1e 1023 select HAVE_SCHED_CLOCK
7ae1f7ec 1024
69b02f6a
LB
1025config PLAT_ORION
1026 bool
f06a1624 1027 select HAVE_SCHED_CLOCK
69b02f6a 1028
bd5ce433
EM
1029config PLAT_PXA
1030 bool
1031
f4b8b319
RK
1032config PLAT_VERSATILE
1033 bool
1034
e3887714
RK
1035config ARM_TIMER_SP804
1036 bool
1037
1da177e4
LT
1038source arch/arm/mm/Kconfig
1039
afe4b25e
LB
1040config IWMMXT
1041 bool "Enable iWMMXt support"
ef6c8445
HZ
1042 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
1043 default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
afe4b25e
LB
1044 help
1045 Enable support for iWMMXt context switching at run time if
1046 running on a CPU that supports it.
1047
1da177e4
LT
1048# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
1049config XSCALE_PMU
1050 bool
1051 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
1052 default y
1053
0f4f0672 1054config CPU_HAS_PMU
8954bb0d
WD
1055 depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
1056 (!ARCH_OMAP3 || OMAP3_EMU)
0f4f0672
JI
1057 default y
1058 bool
1059
52108641 1060config MULTI_IRQ_HANDLER
1061 bool
1062 help
1063 Allow each machine to specify it's own IRQ handler at run time.
1064
3b93e7b0
HC
1065if !MMU
1066source "arch/arm/Kconfig-nommu"
1067endif
1068
9cba3ccc
CM
1069config ARM_ERRATA_411920
1070 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
81d11955 1071 depends on CPU_V6
9cba3ccc
CM
1072 help
1073 Invalidation of the Instruction Cache operation can
1074 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1075 It does not affect the MPCore. This option enables the ARM Ltd.
1076 recommended workaround.
1077
7ce236fc
CM
1078config ARM_ERRATA_430973
1079 bool "ARM errata: Stale prediction on replaced interworking branch"
1080 depends on CPU_V7
1081 help
1082 This option enables the workaround for the 430973 Cortex-A8
1083 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1084 interworking branch is replaced with another code sequence at the
1085 same virtual address, whether due to self-modifying code or virtual
1086 to physical address re-mapping, Cortex-A8 does not recover from the
1087 stale interworking branch prediction. This results in Cortex-A8
1088 executing the new code sequence in the incorrect ARM or Thumb state.
1089 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1090 and also flushes the branch target cache at every context switch.
1091 Note that setting specific bits in the ACTLR register may not be
1092 available in non-secure mode.
1093
855c551f
CM
1094config ARM_ERRATA_458693
1095 bool "ARM errata: Processor deadlock when a false hazard is created"
1096 depends on CPU_V7
1097 help
1098 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1099 erratum. For very specific sequences of memory operations, it is
1100 possible for a hazard condition intended for a cache line to instead
1101 be incorrectly associated with a different cache line. This false
1102 hazard might then cause a processor deadlock. The workaround enables
1103 the L1 caching of the NEON accesses and disables the PLD instruction
1104 in the ACTLR register. Note that setting specific bits in the ACTLR
1105 register may not be available in non-secure mode.
1106
0516e464
CM
1107config ARM_ERRATA_460075
1108 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1109 depends on CPU_V7
1110 help
1111 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1112 erratum. Any asynchronous access to the L2 cache may encounter a
1113 situation in which recent store transactions to the L2 cache are lost
1114 and overwritten with stale memory contents from external memory. The
1115 workaround disables the write-allocate mode for the L2 cache via the
1116 ACTLR register. Note that setting specific bits in the ACTLR register
1117 may not be available in non-secure mode.
1118
9f05027c
WD
1119config ARM_ERRATA_742230
1120 bool "ARM errata: DMB operation may be faulty"
1121 depends on CPU_V7 && SMP
1122 help
1123 This option enables the workaround for the 742230 Cortex-A9
1124 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1125 between two write operations may not ensure the correct visibility
1126 ordering of the two writes. This workaround sets a specific bit in
1127 the diagnostic register of the Cortex-A9 which causes the DMB
1128 instruction to behave as a DSB, ensuring the correct behaviour of
1129 the two writes.
1130
a672e99b
WD
1131config ARM_ERRATA_742231
1132 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1133 depends on CPU_V7 && SMP
1134 help
1135 This option enables the workaround for the 742231 Cortex-A9
1136 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1137 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1138 accessing some data located in the same cache line, may get corrupted
1139 data due to bad handling of the address hazard when the line gets
1140 replaced from one of the CPUs at the same time as another CPU is
1141 accessing it. This workaround sets specific bits in the diagnostic
1142 register of the Cortex-A9 which reduces the linefill issuing
1143 capabilities of the processor.
1144
9e65582a
SS
1145config PL310_ERRATA_588369
1146 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1147 depends on CACHE_L2X0 && ARCH_OMAP4
1148 help
1149 The PL310 L2 cache controller implements three types of Clean &
1150 Invalidate maintenance operations: by Physical Address
1151 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1152 They are architecturally defined to behave as the execution of a
1153 clean operation followed immediately by an invalidate operation,
1154 both performing to the same memory location. This functionality
1155 is not correctly implemented in PL310 as clean lines are not
1156 invalidated as a result of these operations. Note that this errata
1157 uses Texas Instrument's secure monitor api.
cdf357f1
WD
1158
1159config ARM_ERRATA_720789
1160 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1161 depends on CPU_V7 && SMP
1162 help
1163 This option enables the workaround for the 720789 Cortex-A9 (prior to
1164 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1165 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1166 As a consequence of this erratum, some TLB entries which should be
1167 invalidated are not, resulting in an incoherency in the system page
1168 tables. The workaround changes the TLB flushing routines to invalidate
1169 entries regardless of the ASID.
475d92fc
WD
1170
1171config ARM_ERRATA_743622
1172 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1173 depends on CPU_V7
1174 help
1175 This option enables the workaround for the 743622 Cortex-A9
1176 (r2p0..r2p2) erratum. Under very rare conditions, a faulty
1177 optimisation in the Cortex-A9 Store Buffer may lead to data
1178 corruption. This workaround sets a specific bit in the diagnostic
1179 register of the Cortex-A9 which disables the Store Buffer
1180 optimisation, preventing the defect from occurring. This has no
1181 visible impact on the overall performance or power consumption of the
1182 processor.
1183
1da177e4
LT
1184endmenu
1185
1186source "arch/arm/common/Kconfig"
1187
1da177e4
LT
1188menu "Bus support"
1189
1190config ARM_AMBA
1191 bool
1192
1193config ISA
1194 bool
1da177e4
LT
1195 help
1196 Find out whether you have ISA slots on your motherboard. ISA is the
1197 name of a bus system, i.e. the way the CPU talks to the other stuff
1198 inside your box. Other bus systems are PCI, EISA, MicroChannel
1199 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1200 newer boards don't support it. If you have ISA, say Y, otherwise N.
1201
065909b9 1202# Select ISA DMA controller support
1da177e4
LT
1203config ISA_DMA
1204 bool
065909b9 1205 select ISA_DMA_API
1da177e4 1206
065909b9 1207# Select ISA DMA interface
5cae841b
AV
1208config ISA_DMA_API
1209 bool
5cae841b 1210
1da177e4 1211config PCI
0b05da72 1212 bool "PCI support" if MIGHT_HAVE_PCI
1da177e4
LT
1213 help
1214 Find out whether you have a PCI motherboard. PCI is the name of a
1215 bus system, i.e. the way the CPU talks to the other stuff inside
1216 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1217 VESA. If you have PCI, say Y, otherwise N.
1218
52882173
AV
1219config PCI_DOMAINS
1220 bool
1221 depends on PCI
1222
b080ac8a
MRJ
1223config PCI_NANOENGINE
1224 bool "BSE nanoEngine PCI support"
1225 depends on SA1100_NANOENGINE
1226 help
1227 Enable PCI on the BSE nanoEngine board.
1228
36e23590
MW
1229config PCI_SYSCALL
1230 def_bool PCI
1231
1da177e4
LT
1232# Select the host bridge type
1233config PCI_HOST_VIA82C505
1234 bool
1235 depends on PCI && ARCH_SHARK
1236 default y
1237
a0113a99
MR
1238config PCI_HOST_ITE8152
1239 bool
1240 depends on PCI && MACH_ARMCORE
1241 default y
1242 select DMABOUNCE
1243
1da177e4
LT
1244source "drivers/pci/Kconfig"
1245
1246source "drivers/pcmcia/Kconfig"
1247
1248endmenu
1249
1250menu "Kernel Features"
1251
0567a0c0
KH
1252source "kernel/time/Kconfig"
1253
1da177e4
LT
1254config SMP
1255 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
971acb9b 1256 depends on EXPERIMENTAL
bc28248e 1257 depends on GENERIC_CLOCKEVENTS
971acb9b 1258 depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
89c3dedf
DW
1259 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
1260 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
e9d728f5 1261 ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE
f6dd9fa5 1262 select USE_GENERIC_SMP_HELPERS
89c3dedf 1263 select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
1da177e4
LT
1264 help
1265 This enables support for systems with more than one CPU. If you have
1266 a system with only one CPU, like most personal computers, say N. If
1267 you have a system with more than one CPU, say Y.
1268
1269 If you say N here, the kernel will run on single and multiprocessor
1270 machines, but will use only one CPU of a multiprocessor machine. If
1271 you say Y here, the kernel will run on many, but not all, single
1272 processor machines. On a single processor machine, the kernel will
1273 run faster if you say N here.
1274
03502faa 1275 See also <file:Documentation/i386/IO-APIC.txt>,
1da177e4 1276 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
50a23e6e 1277 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
1da177e4
LT
1278
1279 If you don't know what to do here, say N.
1280
f00ec48f
RK
1281config SMP_ON_UP
1282 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
1283 depends on EXPERIMENTAL
ed3768a8 1284 depends on SMP && !XIP
f00ec48f
RK
1285 default y
1286 help
1287 SMP kernels contain instructions which fail on non-SMP processors.
1288 Enabling this option allows the kernel to modify itself to make
1289 these instructions safe. Disabling it allows about 1K of space
1290 savings.
1291
1292 If you don't know what to do here, say Y.
1293
a8cbcd92
RK
1294config HAVE_ARM_SCU
1295 bool
1296 depends on SMP
1297 help
1298 This option enables support for the ARM system coherency unit
1299
f32f4ce2
RK
1300config HAVE_ARM_TWD
1301 bool
1302 depends on SMP
15095bb0 1303 select TICK_ONESHOT
f32f4ce2
RK
1304 help
1305 This options enables support for the ARM timer and watchdog unit
1306
8d5796d2
LB
1307choice
1308 prompt "Memory split"
1309 default VMSPLIT_3G
1310 help
1311 Select the desired split between kernel and user memory.
1312
1313 If you are not absolutely sure what you are doing, leave this
1314 option alone!
1315
1316 config VMSPLIT_3G
1317 bool "3G/1G user/kernel split"
1318 config VMSPLIT_2G
1319 bool "2G/2G user/kernel split"
1320 config VMSPLIT_1G
1321 bool "1G/3G user/kernel split"
1322endchoice
1323
1324config PAGE_OFFSET
1325 hex
1326 default 0x40000000 if VMSPLIT_1G
1327 default 0x80000000 if VMSPLIT_2G
1328 default 0xC0000000
1329
1da177e4
LT
1330config NR_CPUS
1331 int "Maximum number of CPUs (2-32)"
1332 range 2 32
1333 depends on SMP
1334 default "4"
1335
a054a811
RK
1336config HOTPLUG_CPU
1337 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1338 depends on SMP && HOTPLUG && EXPERIMENTAL
176bfc44 1339 depends on !ARCH_MSM
a054a811
RK
1340 help
1341 Say Y here to experiment with turning CPUs off and on. CPUs
1342 can be controlled through /sys/devices/system/cpu.
1343
37ee16ae
RK
1344config LOCAL_TIMERS
1345 bool "Use local timer interrupts"
971acb9b 1346 depends on SMP
37ee16ae 1347 default y
89c3dedf 1348 select HAVE_ARM_TWD if !ARCH_MSM_SCORPIONMP
37ee16ae
RK
1349 help
1350 Enable support for local timers on SMP platforms, rather then the
1351 legacy IPI broadcast method. Local timers allows the system
1352 accounting to be spread across the timer interval, preventing a
1353 "thundering herd" at every timer tick.
1354
d45a398f 1355source kernel/Kconfig.preempt
1da177e4 1356
f8065813
RK
1357config HZ
1358 int
49b7a491 1359 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
2192482e 1360 ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
bfe65704 1361 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
5248c657 1362 default AT91_TIMER_HZ if ARCH_AT91
5da3e714 1363 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
f8065813
RK
1364 default 100
1365
16c79651 1366config THUMB2_KERNEL
4a50bfe3 1367 bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
6e6fc998 1368 depends on CPU_V7 && !CPU_V6 && EXPERIMENTAL
16c79651
CM
1369 select AEABI
1370 select ARM_ASM_UNIFIED
1371 help
1372 By enabling this option, the kernel will be compiled in
1373 Thumb-2 mode. A compiler/assembler that understand the unified
1374 ARM-Thumb syntax is needed.
1375
1376 If unsure, say N.
1377
0becb088
CM
1378config ARM_ASM_UNIFIED
1379 bool
1380
704bdda0
NP
1381config AEABI
1382 bool "Use the ARM EABI to compile the kernel"
1383 help
1384 This option allows for the kernel to be compiled using the latest
1385 ARM ABI (aka EABI). This is only useful if you are using a user
1386 space environment that is also compiled with EABI.
1387
1388 Since there are major incompatibilities between the legacy ABI and
1389 EABI, especially with regard to structure member alignment, this
1390 option also changes the kernel syscall calling convention to
1391 disambiguate both ABIs and allow for backward compatibility support
1392 (selected with CONFIG_OABI_COMPAT).
1393
1394 To use this you need GCC version 4.0.0 or later.
1395
6c90c872 1396config OABI_COMPAT
a73a3ff1 1397 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
61c484d4 1398 depends on AEABI && EXPERIMENTAL
6c90c872
NP
1399 default y
1400 help
1401 This option preserves the old syscall interface along with the
1402 new (ARM EABI) one. It also provides a compatibility layer to
1403 intercept syscalls that have structure arguments which layout
1404 in memory differs between the legacy ABI and the new ARM EABI
1405 (only for non "thumb" binaries). This option adds a tiny
1406 overhead to all syscalls and produces a slightly larger kernel.
1407 If you know you'll be using only pure EABI user space then you
1408 can say N here. If this option is not selected and you attempt
1409 to execute a legacy ABI binary then the result will be
1410 UNPREDICTABLE (in fact it can be predicted that it won't work
1411 at all). If in doubt say Y.
1412
eb33575c 1413config ARCH_HAS_HOLES_MEMORYMODEL
e80d6a24 1414 bool
e80d6a24 1415
05944d74
RK
1416config ARCH_SPARSEMEM_ENABLE
1417 bool
1418
07a2f737
RK
1419config ARCH_SPARSEMEM_DEFAULT
1420 def_bool ARCH_SPARSEMEM_ENABLE
1421
05944d74 1422config ARCH_SELECT_MEMORY_MODEL
be370302 1423 def_bool ARCH_SPARSEMEM_ENABLE
c80d79d7 1424
053a96ca
NP
1425config HIGHMEM
1426 bool "High Memory Support (EXPERIMENTAL)"
1427 depends on MMU && EXPERIMENTAL
1428 help
1429 The address space of ARM processors is only 4 Gigabytes large
1430 and it has to accommodate user address space, kernel address
1431 space as well as some memory mapped IO. That means that, if you
1432 have a large amount of physical memory and/or IO, not all of the
1433 memory can be "permanently mapped" by the kernel. The physical
1434 memory that is not permanently mapped is called "high memory".
1435
1436 Depending on the selected kernel/user memory split, minimum
1437 vmalloc space and actual amount of RAM, you may not need this
1438 option which should result in a slightly faster kernel.
1439
1440 If unsure, say n.
1441
65cec8e3
RK
1442config HIGHPTE
1443 bool "Allocate 2nd-level pagetables from highmem"
1444 depends on HIGHMEM
1445 depends on !OUTER_CACHE
1446
1b8873a0
JI
1447config HW_PERF_EVENTS
1448 bool "Enable hardware performance counter support for perf events"
fe166148 1449 depends on PERF_EVENTS && CPU_HAS_PMU
1b8873a0
JI
1450 default y
1451 help
1452 Enable hardware performance counter support for perf events. If
1453 disabled, perf events will use software events only.
1454
354e6f72 1455config SPARSE_IRQ
c1ba6ba3 1456 def_bool n
354e6f72 1457 help
1458 This enables support for sparse irqs. This is useful in general
1459 as most CPUs have a fairly sparse array of IRQ vectors, which
1460 the irq_desc then maps directly on to. Systems with a high
1461 number of off-chip IRQs will want to treat this as
1462 experimental until they have been independently verified.
1463
3f22ab27
DH
1464source "mm/Kconfig"
1465
c1b2d970
MD
1466config FORCE_MAX_ZONEORDER
1467 int "Maximum zone order" if ARCH_SHMOBILE
1468 range 11 64 if ARCH_SHMOBILE
1469 default "9" if SA1111
1470 default "11"
1471 help
1472 The kernel memory allocator divides physically contiguous memory
1473 blocks into "zones", where each zone is a power of two number of
1474 pages. This option selects the largest power of two that the kernel
1475 keeps in the memory allocator. If you need to allocate very large
1476 blocks of physically contiguous memory, then you may need to
1477 increase this value.
1478
1479 This config option is actually maximum order plus one. For example,
1480 a value of 11 means that the largest free memory block is 2^10 pages.
1481
1da177e4
LT
1482config LEDS
1483 bool "Timer and CPU usage LEDs"
e055d5bf 1484 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
8c8fdbc9 1485 ARCH_EBSA285 || ARCH_INTEGRATOR || \
1da177e4
LT
1486 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1487 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
73a59c1c 1488 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
25329671 1489 ARCH_AT91 || ARCH_DAVINCI || \
ff3042fb 1490 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1da177e4
LT
1491 help
1492 If you say Y here, the LEDs on your machine will be used
1493 to provide useful information about your current system status.
1494
1495 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1496 be able to select which LEDs are active using the options below. If
1497 you are compiling a kernel for the EBSA-110 or the LART however, the
1498 red LED will simply flash regularly to indicate that the system is
1499 still functional. It is safe to say Y here if you have a CATS
1500 system, but the driver will do nothing.
1501
1502config LEDS_TIMER
1503 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
eebdf7d7
DB
1504 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1505 || MACH_OMAP_PERSEUS2
1da177e4 1506 depends on LEDS
0567a0c0 1507 depends on !GENERIC_CLOCKEVENTS
1da177e4
LT
1508 default y if ARCH_EBSA110
1509 help
1510 If you say Y here, one of the system LEDs (the green one on the
1511 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1512 will flash regularly to indicate that the system is still
1513 operational. This is mainly useful to kernel hackers who are
1514 debugging unstable kernels.
1515
1516 The LART uses the same LED for both Timer LED and CPU usage LED
1517 functions. You may choose to use both, but the Timer LED function
1518 will overrule the CPU usage LED.
1519
1520config LEDS_CPU
1521 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
eebdf7d7
DB
1522 !ARCH_OMAP) \
1523 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1524 || MACH_OMAP_PERSEUS2
1da177e4
LT
1525 depends on LEDS
1526 help
1527 If you say Y here, the red LED will be used to give a good real
1528 time indication of CPU usage, by lighting whenever the idle task
1529 is not currently executing.
1530
1531 The LART uses the same LED for both Timer LED and CPU usage LED
1532 functions. You may choose to use both, but the Timer LED function
1533 will overrule the CPU usage LED.
1534
1535config ALIGNMENT_TRAP
1536 bool
f12d0d7c 1537 depends on CPU_CP15_MMU
1da177e4 1538 default y if !ARCH_EBSA110
e119bfff 1539 select HAVE_PROC_CPU if PROC_FS
1da177e4 1540 help
84eb8d06 1541 ARM processors cannot fetch/store information which is not
1da177e4
LT
1542 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1543 address divisible by 4. On 32-bit ARM processors, these non-aligned
1544 fetch/store instructions will be emulated in software if you say
1545 here, which has a severe performance impact. This is necessary for
1546 correct operation of some network protocols. With an IP-only
1547 configuration it is safe to say N, otherwise say Y.
1548
39ec58f3
LB
1549config UACCESS_WITH_MEMCPY
1550 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1551 depends on MMU && EXPERIMENTAL
1552 default y if CPU_FEROCEON
1553 help
1554 Implement faster copy_to_user and clear_user methods for CPU
1555 cores where a 8-word STM instruction give significantly higher
1556 memory write throughput than a sequence of individual 32bit stores.
1557
1558 A possible side effect is a slight increase in scheduling latency
1559 between threads sharing the same address space if they invoke
1560 such copy operations with large buffers.
1561
1562 However, if the CPU data cache is using a write-allocate mode,
1563 this option is unlikely to provide any performance gain.
1564
70c70d97
NP
1565config SECCOMP
1566 bool
1567 prompt "Enable seccomp to safely compute untrusted bytecode"
1568 ---help---
1569 This kernel feature is useful for number crunching applications
1570 that may need to compute untrusted bytecode during their
1571 execution. By using pipes or other transports made available to
1572 the process as file descriptors supporting the read/write
1573 syscalls, it's possible to isolate those applications in
1574 their own address space using seccomp. Once seccomp is
1575 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1576 and the task is only allowed to execute a few safe syscalls
1577 defined by each seccomp mode.
1578
c743f380
NP
1579config CC_STACKPROTECTOR
1580 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
4a50bfe3 1581 depends on EXPERIMENTAL
c743f380
NP
1582 help
1583 This option turns on the -fstack-protector GCC feature. This
1584 feature puts, at the beginning of functions, a canary value on
1585 the stack just before the return address, and validates
1586 the value just before actually returning. Stack based buffer
1587 overflows (that need to overwrite this return address) now also
1588 overwrite the canary, which gets detected and the attack is then
1589 neutralized via a kernel panic.
1590 This feature requires gcc version 4.2 or above.
1591
73a65b3f
UKK
1592config DEPRECATED_PARAM_STRUCT
1593 bool "Provide old way to pass kernel parameters"
1594 help
1595 This was deprecated in 2001 and announced to live on for 5 years.
1596 Some old boot loaders still use this way.
1597
1da177e4
LT
1598endmenu
1599
1600menu "Boot options"
1601
1602# Compressed boot loader in ROM. Yes, we really want to ask about
1603# TEXT and BSS so we preserve their values in the config files.
1604config ZBOOT_ROM_TEXT
1605 hex "Compressed ROM boot loader base address"
1606 default "0"
1607 help
1608 The physical address at which the ROM-able zImage is to be
1609 placed in the target. Platforms which normally make use of
1610 ROM-able zImage formats normally set this to a suitable
1611 value in their defconfig file.
1612
1613 If ZBOOT_ROM is not enabled, this has no effect.
1614
1615config ZBOOT_ROM_BSS
1616 hex "Compressed ROM boot loader BSS address"
1617 default "0"
1618 help
f8c440b2
DF
1619 The base address of an area of read/write memory in the target
1620 for the ROM-able zImage which must be available while the
1621 decompressor is running. It must be large enough to hold the
1622 entire decompressed kernel plus an additional 128 KiB.
1623 Platforms which normally make use of ROM-able zImage formats
1624 normally set this to a suitable value in their defconfig file.
1da177e4
LT
1625
1626 If ZBOOT_ROM is not enabled, this has no effect.
1627
1628config ZBOOT_ROM
1629 bool "Compressed boot loader in ROM/flash"
1630 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1631 help
1632 Say Y here if you intend to execute your compressed kernel image
1633 (zImage) directly from ROM or flash. If unsure, say N.
1634
1635config CMDLINE
1636 string "Default kernel command string"
1637 default ""
1638 help
1639 On some architectures (EBSA110 and CATS), there is currently no way
1640 for the boot loader to pass arguments to the kernel. For these
1641 architectures, you should supply some command-line options at build
1642 time by entering them here. As a minimum, you should specify the
1643 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1644
92d2040d
AH
1645config CMDLINE_FORCE
1646 bool "Always use the default kernel command string"
1647 depends on CMDLINE != ""
1648 help
1649 Always use the default kernel command string, even if the boot
1650 loader passes other arguments to the kernel.
1651 This is useful if you cannot or don't want to change the
1652 command-line options your boot loader passes to the kernel.
1653
1654 If unsure, say N.
1655
1da177e4
LT
1656config XIP_KERNEL
1657 bool "Kernel Execute-In-Place from ROM"
1658 depends on !ZBOOT_ROM
1659 help
1660 Execute-In-Place allows the kernel to run from non-volatile storage
1661 directly addressable by the CPU, such as NOR flash. This saves RAM
1662 space since the text section of the kernel is not loaded from flash
1663 to RAM. Read-write sections, such as the data section and stack,
1664 are still copied to RAM. The XIP kernel is not compressed since
1665 it has to run directly from flash, so it will take more space to
1666 store it. The flash address used to link the kernel object files,
1667 and for storing it, is configuration dependent. Therefore, if you
1668 say Y here, you must know the proper physical address where to
1669 store the kernel image depending on your own flash memory usage.
1670
1671 Also note that the make target becomes "make xipImage" rather than
1672 "make zImage" or "make Image". The final kernel binary to put in
1673 ROM memory will be arch/arm/boot/xipImage.
1674
1675 If unsure, say N.
1676
1677config XIP_PHYS_ADDR
1678 hex "XIP Kernel Physical Location"
1679 depends on XIP_KERNEL
1680 default "0x00080000"
1681 help
1682 This is the physical address in your flash memory the kernel will
1683 be linked for and stored to. This address is dependent on your
1684 own flash usage.
1685
c587e4a6
RP
1686config KEXEC
1687 bool "Kexec system call (EXPERIMENTAL)"
1688 depends on EXPERIMENTAL
1689 help
1690 kexec is a system call that implements the ability to shutdown your
1691 current kernel, and to start another kernel. It is like a reboot
01dd2fbf 1692 but it is independent of the system firmware. And like a reboot
c587e4a6
RP
1693 you can start any kernel with it, not just Linux.
1694
1695 It is an ongoing process to be certain the hardware in a machine
1696 is properly shutdown, so do not be surprised if this code does not
1697 initially work for you. It may help to enable device hotplugging
1698 support.
1699
4cd9d6f7
RP
1700config ATAGS_PROC
1701 bool "Export atags in procfs"
b98d7291
UL
1702 depends on KEXEC
1703 default y
4cd9d6f7
RP
1704 help
1705 Should the atags used to boot the kernel be exported in an "atags"
1706 file in procfs. Useful with kexec.
1707
cb5d39b3
MW
1708config CRASH_DUMP
1709 bool "Build kdump crash kernel (EXPERIMENTAL)"
1710 depends on EXPERIMENTAL
1711 help
1712 Generate crash dump after being started by kexec. This should
1713 be normally only set in special crash dump kernels which are
1714 loaded in the main kernel with kexec-tools into a specially
1715 reserved region and then later executed after a crash by
1716 kdump/kexec. The crash dump kernel must be compiled to a
1717 memory address not used by the main kernel
1718
1719 For more details see Documentation/kdump/kdump.txt
1720
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EM
1721config AUTO_ZRELADDR
1722 bool "Auto calculation of the decompressed kernel image address"
1723 depends on !ZBOOT_ROM && !ARCH_U300
1724 help
1725 ZRELADDR is the physical address where the decompressed kernel
1726 image will be placed. If AUTO_ZRELADDR is selected, the address
1727 will be determined at run-time by masking the current IP with
1728 0xf8000000. This assumes the zImage being placed in the first 128MB
1729 from start of memory.
1730
1da177e4
LT
1731endmenu
1732
ac9d7efc 1733menu "CPU Power Management"
1da177e4 1734
89c52ed4 1735if ARCH_HAS_CPUFREQ
1da177e4
LT
1736
1737source "drivers/cpufreq/Kconfig"
1738
64f102b6
YS
1739config CPU_FREQ_IMX
1740 tristate "CPUfreq driver for i.MX CPUs"
1741 depends on ARCH_MXC && CPU_FREQ
1742 help
1743 This enables the CPUfreq driver for i.MX CPUs.
1744
1da177e4
LT
1745config CPU_FREQ_SA1100
1746 bool
1da177e4
LT
1747
1748config CPU_FREQ_SA1110
1749 bool
1da177e4
LT
1750
1751config CPU_FREQ_INTEGRATOR
1752 tristate "CPUfreq driver for ARM Integrator CPUs"
1753 depends on ARCH_INTEGRATOR && CPU_FREQ
1754 default y
1755 help
1756 This enables the CPUfreq driver for ARM Integrator CPUs.
1757
1758 For details, take a look at <file:Documentation/cpu-freq>.
1759
1760 If in doubt, say Y.
1761
9e2697ff
RK
1762config CPU_FREQ_PXA
1763 bool
1764 depends on CPU_FREQ && ARCH_PXA && PXA25x
1765 default y
1766 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1767
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MB
1768config CPU_FREQ_S3C64XX
1769 bool "CPUfreq support for Samsung S3C64XX CPUs"
1770 depends on CPU_FREQ && CPU_S3C6410
1771
9d56c02a
BD
1772config CPU_FREQ_S3C
1773 bool
1774 help
1775 Internal configuration node for common cpufreq on Samsung SoC
1776
1777config CPU_FREQ_S3C24XX
4a50bfe3 1778 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
9d56c02a
BD
1779 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1780 select CPU_FREQ_S3C
1781 help
1782 This enables the CPUfreq driver for the Samsung S3C24XX family
1783 of CPUs.
1784
1785 For details, take a look at <file:Documentation/cpu-freq>.
1786
1787 If in doubt, say N.
1788
1789config CPU_FREQ_S3C24XX_PLL
4a50bfe3 1790 bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
9d56c02a
BD
1791 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1792 help
1793 Compile in support for changing the PLL frequency from the
1794 S3C24XX series CPUfreq driver. The PLL takes time to settle
1795 after a frequency change, so by default it is not enabled.
1796
1797 This also means that the PLL tables for the selected CPU(s) will
1798 be built which may increase the size of the kernel image.
1799
1800config CPU_FREQ_S3C24XX_DEBUG
1801 bool "Debug CPUfreq Samsung driver core"
1802 depends on CPU_FREQ_S3C24XX
1803 help
1804 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1805
1806config CPU_FREQ_S3C24XX_IODEBUG
1807 bool "Debug CPUfreq Samsung driver IO timing"
1808 depends on CPU_FREQ_S3C24XX
1809 help
1810 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1811
e6d197a6
BD
1812config CPU_FREQ_S3C24XX_DEBUGFS
1813 bool "Export debugfs for CPUFreq"
1814 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1815 help
1816 Export status information via debugfs.
1817
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LT
1818endif
1819
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RK
1820source "drivers/cpuidle/Kconfig"
1821
1822endmenu
1823
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LT
1824menu "Floating point emulation"
1825
1826comment "At least one emulation must be selected"
1827
1828config FPE_NWFPE
1829 bool "NWFPE math emulation"
593c252a 1830 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
1da177e4
LT
1831 ---help---
1832 Say Y to include the NWFPE floating point emulator in the kernel.
1833 This is necessary to run most binaries. Linux does not currently
1834 support floating point hardware so you need to say Y here even if
1835 your machine has an FPA or floating point co-processor podule.
1836
1837 You may say N here if you are going to load the Acorn FPEmulator
1838 early in the bootup.
1839
1840config FPE_NWFPE_XP
1841 bool "Support extended precision"
bedf142b 1842 depends on FPE_NWFPE
1da177e4
LT
1843 help
1844 Say Y to include 80-bit support in the kernel floating-point
1845 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1846 Note that gcc does not generate 80-bit operations by default,
1847 so in most cases this option only enlarges the size of the
1848 floating point emulator without any good reason.
1849
1850 You almost surely want to say N here.
1851
1852config FPE_FASTFPE
1853 bool "FastFPE math emulation (EXPERIMENTAL)"
8993a44c 1854 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1da177e4
LT
1855 ---help---
1856 Say Y here to include the FAST floating point emulator in the kernel.
1857 This is an experimental much faster emulator which now also has full
1858 precision for the mantissa. It does not support any exceptions.
1859 It is very simple, and approximately 3-6 times faster than NWFPE.
1860
1861 It should be sufficient for most programs. It may be not suitable
1862 for scientific calculations, but you have to check this for yourself.
1863 If you do not feel you need a faster FP emulation you should better
1864 choose NWFPE.
1865
1866config VFP
1867 bool "VFP-format floating point maths"
c00d4ffd 1868 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1da177e4
LT
1869 help
1870 Say Y to include VFP support code in the kernel. This is needed
1871 if your hardware includes a VFP unit.
1872
1873 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1874 release notes and additional status information.
1875
1876 Say N if your target does not have VFP hardware.
1877
25ebee02
CM
1878config VFPv3
1879 bool
1880 depends on VFP
1881 default y if CPU_V7
1882
b5872db4
CM
1883config NEON
1884 bool "Advanced SIMD (NEON) Extension support"
1885 depends on VFPv3 && CPU_V7
1886 help
1887 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1888 Extension.
1889
1da177e4
LT
1890endmenu
1891
1892menu "Userspace binary formats"
1893
1894source "fs/Kconfig.binfmt"
1895
1896config ARTHUR
1897 tristate "RISC OS personality"
704bdda0 1898 depends on !AEABI
1da177e4
LT
1899 help
1900 Say Y here to include the kernel code necessary if you want to run
1901 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1902 experimental; if this sounds frightening, say N and sleep in peace.
1903 You can also say M here to compile this support as a module (which
1904 will be called arthur).
1905
1906endmenu
1907
1908menu "Power management options"
1909
eceab4ac 1910source "kernel/power/Kconfig"
1da177e4 1911
f4cb5700
JB
1912config ARCH_SUSPEND_POSSIBLE
1913 def_bool y
1914
1da177e4
LT
1915endmenu
1916
d5950b43
SR
1917source "net/Kconfig"
1918
ac25150f 1919source "drivers/Kconfig"
1da177e4
LT
1920
1921source "fs/Kconfig"
1922
1da177e4
LT
1923source "arch/arm/Kconfig.debug"
1924
1925source "security/Kconfig"
1926
1927source "crypto/Kconfig"
1928
1929source "lib/Kconfig"