ARM: mach-shmobile: Use shared GIC entry macros
[deliverable/linux.git] / arch / arm / Kconfig
CommitLineData
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
Z
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
c793c1b0 641 help
6d72ad35 642 Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
c793c1b0 643
1da177e4
LT
644config ARCH_RPC
645 bool "RiscPC"
646 select ARCH_ACORN
647 select FIQ
648 select TIMER_ACORN
a08b6b79 649 select ARCH_MAY_HAVE_PC_FDC
341eb781 650 select HAVE_PATA_PLATFORM
065909b9 651 select ISA_DMA_API
5ea81769 652 select NO_IOPORT
07f841b7 653 select ARCH_SPARSEMEM_ENABLE
5cfc8ee0 654 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
655 help
656 On the Acorn Risc-PC, Linux can support the internal IDE disk and
657 CD-ROM interface, serial and parallel port, and the floppy drive.
658
659config ARCH_SA1100
660 bool "SA1100-based"
c750815e 661 select CPU_SA1100
f7e68bbf 662 select ISA
05944d74 663 select ARCH_SPARSEMEM_ENABLE
034d2f5a 664 select ARCH_MTD_XIP
89c52ed4 665 select ARCH_HAS_CPUFREQ
1937f5b9 666 select CPU_FREQ
3e238be2 667 select GENERIC_CLOCKEVENTS
9483a578 668 select HAVE_CLK
5094b92f 669 select HAVE_SCHED_CLOCK
3e238be2 670 select TICK_ONESHOT
7444a72e 671 select ARCH_REQUIRE_GPIOLIB
f999b8bd
MM
672 help
673 Support for StrongARM 11x0 based boards.
1da177e4
LT
674
675config ARCH_S3C2410
63b1f51b 676 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
0a938b97 677 select GENERIC_GPIO
9d56c02a 678 select ARCH_HAS_CPUFREQ
9483a578 679 select HAVE_CLK
5cfc8ee0 680 select ARCH_USES_GETTIMEOFFSET
20676c15 681 select HAVE_S3C2410_I2C if I2C
1da177e4
LT
682 help
683 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
684 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
f6c8965a 685 the Samsung SMDK2410 development board (and derivatives).
1da177e4 686
63b1f51b
BD
687 Note, the S3C2416 and the S3C2450 are so close that they even share
688 the same SoC ID code. This means that there is no seperate machine
689 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
690
a08ab637
BD
691config ARCH_S3C64XX
692 bool "Samsung S3C64XX"
89f1fa08 693 select PLAT_SAMSUNG
89f0ce72 694 select CPU_V6
89f0ce72 695 select ARM_VIC
a08ab637 696 select HAVE_CLK
89f0ce72 697 select NO_IOPORT
5cfc8ee0 698 select ARCH_USES_GETTIMEOFFSET
89c52ed4 699 select ARCH_HAS_CPUFREQ
89f0ce72
BD
700 select ARCH_REQUIRE_GPIOLIB
701 select SAMSUNG_CLKSRC
702 select SAMSUNG_IRQ_VIC_TIMER
703 select SAMSUNG_IRQ_UART
704 select S3C_GPIO_TRACK
705 select S3C_GPIO_PULL_UPDOWN
706 select S3C_GPIO_CFG_S3C24XX
707 select S3C_GPIO_CFG_S3C64XX
708 select S3C_DEV_NAND
709 select USB_ARCH_HAS_OHCI
710 select SAMSUNG_GPIOLIB_4BIT
20676c15 711 select HAVE_S3C2410_I2C if I2C
c39d8d55 712 select HAVE_S3C2410_WATCHDOG if WATCHDOG
a08ab637
BD
713 help
714 Samsung S3C64XX series based systems
715
49b7a491
KK
716config ARCH_S5P64X0
717 bool "Samsung S5P6440 S5P6450"
c4ffccdd
KK
718 select CPU_V6
719 select GENERIC_GPIO
720 select HAVE_CLK
c39d8d55 721 select HAVE_S3C2410_WATCHDOG if WATCHDOG
925c68cd 722 select ARCH_USES_GETTIMEOFFSET
20676c15 723 select HAVE_S3C2410_I2C if I2C
754961a8 724 select HAVE_S3C_RTC if RTC_CLASS
c4ffccdd 725 help
49b7a491
KK
726 Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
727 SMDK6450.
c4ffccdd 728
550db7f1
KK
729config ARCH_S5P6442
730 bool "Samsung S5P6442"
731 select CPU_V6
732 select GENERIC_GPIO
733 select HAVE_CLK
925c68cd 734 select ARCH_USES_GETTIMEOFFSET
c39d8d55 735 select HAVE_S3C2410_WATCHDOG if WATCHDOG
550db7f1
KK
736 help
737 Samsung S5P6442 CPU based systems
738
acc84707
MS
739config ARCH_S5PC100
740 bool "Samsung S5PC100"
5a7652f2
BM
741 select GENERIC_GPIO
742 select HAVE_CLK
743 select CPU_V7
d6d502fa 744 select ARM_L1_CACHE_SHIFT_6
925c68cd 745 select ARCH_USES_GETTIMEOFFSET
20676c15 746 select HAVE_S3C2410_I2C if I2C
754961a8 747 select HAVE_S3C_RTC if RTC_CLASS
c39d8d55 748 select HAVE_S3C2410_WATCHDOG if WATCHDOG
5a7652f2 749 help
acc84707 750 Samsung S5PC100 series based systems
5a7652f2 751
170f4e42
KK
752config ARCH_S5PV210
753 bool "Samsung S5PV210/S5PC110"
754 select CPU_V7
eecb6a84 755 select ARCH_SPARSEMEM_ENABLE
170f4e42
KK
756 select GENERIC_GPIO
757 select HAVE_CLK
758 select ARM_L1_CACHE_SHIFT_6
d8144aea 759 select ARCH_HAS_CPUFREQ
925c68cd 760 select ARCH_USES_GETTIMEOFFSET
20676c15 761 select HAVE_S3C2410_I2C if I2C
754961a8 762 select HAVE_S3C_RTC if RTC_CLASS
c39d8d55 763 select HAVE_S3C2410_WATCHDOG if WATCHDOG
170f4e42
KK
764 help
765 Samsung S5PV210/S5PC110 series based systems
766
cc0e72b8
CY
767config ARCH_S5PV310
768 bool "Samsung S5PV310/S5PC210"
769 select CPU_V7
f567fa6f 770 select ARCH_SPARSEMEM_ENABLE
cc0e72b8
CY
771 select GENERIC_GPIO
772 select HAVE_CLK
773 select GENERIC_CLOCKEVENTS
754961a8 774 select HAVE_S3C_RTC if RTC_CLASS
20676c15 775 select HAVE_S3C2410_I2C if I2C
c39d8d55 776 select HAVE_S3C2410_WATCHDOG if WATCHDOG
cc0e72b8
CY
777 help
778 Samsung S5PV310 series based systems
779
1da177e4
LT
780config ARCH_SHARK
781 bool "Shark"
c750815e 782 select CPU_SA110
f7e68bbf
RK
783 select ISA
784 select ISA_DMA
3bca103a 785 select ZONE_DMA
f7e68bbf 786 select PCI
5cfc8ee0 787 select ARCH_USES_GETTIMEOFFSET
f999b8bd
MM
788 help
789 Support for the StrongARM based Digital DNARD machine, also known
790 as "Shark" (<http://www.shark-linux.de/shark.html>).
1da177e4 791
83ef3338
HK
792config ARCH_TCC_926
793 bool "Telechips TCC ARM926-based systems"
794 select CPU_ARM926T
795 select HAVE_CLK
6d803ba7 796 select CLKDEV_LOOKUP
83ef3338
HK
797 select GENERIC_CLOCKEVENTS
798 help
799 Support for Telechips TCC ARM926-based systems.
800
1da177e4
LT
801config ARCH_LH7A40X
802 bool "Sharp LH7A40X"
c750815e 803 select CPU_ARM922T
4ba3f7c5 804 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
5cfc8ee0 805 select ARCH_USES_GETTIMEOFFSET
1da177e4
LT
806 help
807 Say Y here for systems based on one of the Sharp LH7A40X
808 System on a Chip processors. These CPUs include an ARM922T
809 core with a wide array of integrated devices for
810 hand-held and low-power applications.
811
d98aac75
LW
812config ARCH_U300
813 bool "ST-Ericsson U300 Series"
814 depends on MMU
815 select CPU_ARM926T
5c21b7ca 816 select HAVE_SCHED_CLOCK
bc581770 817 select HAVE_TCM
d98aac75
LW
818 select ARM_AMBA
819 select ARM_VIC
d98aac75 820 select GENERIC_CLOCKEVENTS
6d803ba7 821 select CLKDEV_LOOKUP
d98aac75
LW
822 select GENERIC_GPIO
823 help
824 Support for ST-Ericsson U300 series mobile platforms.
825
ccf50e23
RK
826config ARCH_U8500
827 bool "ST-Ericsson U8500 Series"
828 select CPU_V7
829 select ARM_AMBA
ccf50e23 830 select GENERIC_CLOCKEVENTS
6d803ba7 831 select CLKDEV_LOOKUP
94bdc0e2 832 select ARCH_REQUIRE_GPIOLIB
7c1a70e9 833 select ARCH_HAS_CPUFREQ
ccf50e23
RK
834 help
835 Support for ST-Ericsson's Ux500 architecture
836
837config ARCH_NOMADIK
838 bool "STMicroelectronics Nomadik"
839 select ARM_AMBA
840 select ARM_VIC
841 select CPU_ARM926T
6d803ba7 842 select CLKDEV_LOOKUP
ccf50e23 843 select GENERIC_CLOCKEVENTS
ccf50e23
RK
844 select ARCH_REQUIRE_GPIOLIB
845 help
846 Support for the Nomadik platform by ST-Ericsson
847
7c6337e2
KH
848config ARCH_DAVINCI
849 bool "TI DaVinci"
7c6337e2 850 select GENERIC_CLOCKEVENTS
dce1115b 851 select ARCH_REQUIRE_GPIOLIB
3bca103a 852 select ZONE_DMA
9232fcc9 853 select HAVE_IDE
6d803ba7 854 select CLKDEV_LOOKUP
20e9969b 855 select GENERIC_ALLOCATOR
ae88e05a 856 select ARCH_HAS_HOLES_MEMORYMODEL
7c6337e2
KH
857 help
858 Support for TI's DaVinci platform.
859
3b938be6
RK
860config ARCH_OMAP
861 bool "TI OMAP"
9483a578 862 select HAVE_CLK
7444a72e 863 select ARCH_REQUIRE_GPIOLIB
89c52ed4 864 select ARCH_HAS_CPUFREQ
06cad098 865 select GENERIC_CLOCKEVENTS
dc548fbb 866 select HAVE_SCHED_CLOCK
9af915da 867 select ARCH_HAS_HOLES_MEMORYMODEL
3b938be6 868 help
6e457bb0 869 Support for TI's OMAP platform (OMAP1/2/3/4).
3b938be6 870
cee37e50 871config PLAT_SPEAR
872 bool "ST SPEAr"
873 select ARM_AMBA
874 select ARCH_REQUIRE_GPIOLIB
6d803ba7 875 select CLKDEV_LOOKUP
cee37e50 876 select GENERIC_CLOCKEVENTS
cee37e50 877 select HAVE_CLK
878 help
879 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
880
1da177e4
LT
881endchoice
882
ccf50e23
RK
883#
884# This is sorted alphabetically by mach-* pathname. However, plat-*
885# Kconfigs may be included either alphabetically (according to the
886# plat- suffix) or along side the corresponding mach-* source.
887#
95b8f20f
RK
888source "arch/arm/mach-aaec2000/Kconfig"
889
890source "arch/arm/mach-at91/Kconfig"
891
892source "arch/arm/mach-bcmring/Kconfig"
893
1da177e4
LT
894source "arch/arm/mach-clps711x/Kconfig"
895
d94f944e
AV
896source "arch/arm/mach-cns3xxx/Kconfig"
897
95b8f20f
RK
898source "arch/arm/mach-davinci/Kconfig"
899
900source "arch/arm/mach-dove/Kconfig"
901
e7736d47
LB
902source "arch/arm/mach-ep93xx/Kconfig"
903
1da177e4
LT
904source "arch/arm/mach-footbridge/Kconfig"
905
59d3a193
PZ
906source "arch/arm/mach-gemini/Kconfig"
907
95b8f20f
RK
908source "arch/arm/mach-h720x/Kconfig"
909
1da177e4
LT
910source "arch/arm/mach-integrator/Kconfig"
911
3f7e5815
LB
912source "arch/arm/mach-iop32x/Kconfig"
913
914source "arch/arm/mach-iop33x/Kconfig"
1da177e4 915
285f5fa7
DW
916source "arch/arm/mach-iop13xx/Kconfig"
917
1da177e4
LT
918source "arch/arm/mach-ixp4xx/Kconfig"
919
920source "arch/arm/mach-ixp2000/Kconfig"
921
c4713074
LB
922source "arch/arm/mach-ixp23xx/Kconfig"
923
95b8f20f
RK
924source "arch/arm/mach-kirkwood/Kconfig"
925
926source "arch/arm/mach-ks8695/Kconfig"
927
928source "arch/arm/mach-lh7a40x/Kconfig"
929
777f9beb
LB
930source "arch/arm/mach-loki/Kconfig"
931
40805949
KW
932source "arch/arm/mach-lpc32xx/Kconfig"
933
95b8f20f
RK
934source "arch/arm/mach-msm/Kconfig"
935
794d15b2
SS
936source "arch/arm/mach-mv78xx0/Kconfig"
937
95b8f20f 938source "arch/arm/plat-mxc/Kconfig"
1da177e4 939
1d3f33d5
SG
940source "arch/arm/mach-mxs/Kconfig"
941
95b8f20f 942source "arch/arm/mach-netx/Kconfig"
49cbe786 943
95b8f20f
RK
944source "arch/arm/mach-nomadik/Kconfig"
945source "arch/arm/plat-nomadik/Kconfig"
946
947source "arch/arm/mach-ns9xxx/Kconfig"
1da177e4 948
186f93ea 949source "arch/arm/mach-nuc93x/Kconfig"
1da177e4 950
d48af15e
TL
951source "arch/arm/plat-omap/Kconfig"
952
953source "arch/arm/mach-omap1/Kconfig"
1da177e4 954
1dbae815
TL
955source "arch/arm/mach-omap2/Kconfig"
956
9dd0b194 957source "arch/arm/mach-orion5x/Kconfig"
585cf175 958
95b8f20f
RK
959source "arch/arm/mach-pxa/Kconfig"
960source "arch/arm/plat-pxa/Kconfig"
585cf175 961
95b8f20f
RK
962source "arch/arm/mach-mmp/Kconfig"
963
964source "arch/arm/mach-realview/Kconfig"
965
966source "arch/arm/mach-sa1100/Kconfig"
edabd38e 967
cf383678 968source "arch/arm/plat-samsung/Kconfig"
a21765a7 969source "arch/arm/plat-s3c24xx/Kconfig"
c4ffccdd 970source "arch/arm/plat-s5p/Kconfig"
a21765a7 971
cee37e50 972source "arch/arm/plat-spear/Kconfig"
a21765a7 973
83ef3338
HK
974source "arch/arm/plat-tcc/Kconfig"
975
a21765a7
BD
976if ARCH_S3C2410
977source "arch/arm/mach-s3c2400/Kconfig"
1da177e4 978source "arch/arm/mach-s3c2410/Kconfig"
a21765a7 979source "arch/arm/mach-s3c2412/Kconfig"
f1290a49 980source "arch/arm/mach-s3c2416/Kconfig"
a21765a7 981source "arch/arm/mach-s3c2440/Kconfig"
e4d06e39 982source "arch/arm/mach-s3c2443/Kconfig"
a21765a7 983endif
1da177e4 984
a08ab637 985if ARCH_S3C64XX
431107ea 986source "arch/arm/mach-s3c64xx/Kconfig"
a08ab637
BD
987endif
988
49b7a491 989source "arch/arm/mach-s5p64x0/Kconfig"
c4ffccdd 990
550db7f1 991source "arch/arm/mach-s5p6442/Kconfig"
7bd0f2f5 992
5a7652f2 993source "arch/arm/mach-s5pc100/Kconfig"
5a7652f2 994
170f4e42
KK
995source "arch/arm/mach-s5pv210/Kconfig"
996
cc0e72b8
CY
997source "arch/arm/mach-s5pv310/Kconfig"
998
882d01f9 999source "arch/arm/mach-shmobile/Kconfig"
52c543f9 1000
882d01f9 1001source "arch/arm/plat-stmp3xxx/Kconfig"
9e73c84c 1002
c5f80065
EG
1003source "arch/arm/mach-tegra/Kconfig"
1004
95b8f20f 1005source "arch/arm/mach-u300/Kconfig"
1da177e4 1006
95b8f20f 1007source "arch/arm/mach-ux500/Kconfig"
1da177e4
LT
1008
1009source "arch/arm/mach-versatile/Kconfig"
1010
ceade897
RK
1011source "arch/arm/mach-vexpress/Kconfig"
1012
7ec80ddf 1013source "arch/arm/mach-w90x900/Kconfig"
1014
1da177e4
LT
1015# Definitions to make life easier
1016config ARCH_ACORN
1017 bool
1018
7ae1f7ec
LB
1019config PLAT_IOP
1020 bool
469d3044 1021 select GENERIC_CLOCKEVENTS
08f26b1e 1022 select HAVE_SCHED_CLOCK
7ae1f7ec 1023
69b02f6a
LB
1024config PLAT_ORION
1025 bool
f06a1624 1026 select HAVE_SCHED_CLOCK
69b02f6a 1027
bd5ce433
EM
1028config PLAT_PXA
1029 bool
1030
f4b8b319
RK
1031config PLAT_VERSATILE
1032 bool
1033
e3887714
RK
1034config ARM_TIMER_SP804
1035 bool
1036
1da177e4
LT
1037source arch/arm/mm/Kconfig
1038
afe4b25e
LB
1039config IWMMXT
1040 bool "Enable iWMMXt support"
ef6c8445
HZ
1041 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
1042 default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
afe4b25e
LB
1043 help
1044 Enable support for iWMMXt context switching at run time if
1045 running on a CPU that supports it.
1046
1da177e4
LT
1047# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
1048config XSCALE_PMU
1049 bool
1050 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
1051 default y
1052
0f4f0672 1053config CPU_HAS_PMU
8954bb0d
WD
1054 depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
1055 (!ARCH_OMAP3 || OMAP3_EMU)
0f4f0672
JI
1056 default y
1057 bool
1058
52108641 1059config MULTI_IRQ_HANDLER
1060 bool
1061 help
1062 Allow each machine to specify it's own IRQ handler at run time.
1063
3b93e7b0
HC
1064if !MMU
1065source "arch/arm/Kconfig-nommu"
1066endif
1067
9cba3ccc
CM
1068config ARM_ERRATA_411920
1069 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
81d11955 1070 depends on CPU_V6
9cba3ccc
CM
1071 help
1072 Invalidation of the Instruction Cache operation can
1073 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1074 It does not affect the MPCore. This option enables the ARM Ltd.
1075 recommended workaround.
1076
7ce236fc
CM
1077config ARM_ERRATA_430973
1078 bool "ARM errata: Stale prediction on replaced interworking branch"
1079 depends on CPU_V7
1080 help
1081 This option enables the workaround for the 430973 Cortex-A8
1082 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1083 interworking branch is replaced with another code sequence at the
1084 same virtual address, whether due to self-modifying code or virtual
1085 to physical address re-mapping, Cortex-A8 does not recover from the
1086 stale interworking branch prediction. This results in Cortex-A8
1087 executing the new code sequence in the incorrect ARM or Thumb state.
1088 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1089 and also flushes the branch target cache at every context switch.
1090 Note that setting specific bits in the ACTLR register may not be
1091 available in non-secure mode.
1092
855c551f
CM
1093config ARM_ERRATA_458693
1094 bool "ARM errata: Processor deadlock when a false hazard is created"
1095 depends on CPU_V7
1096 help
1097 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1098 erratum. For very specific sequences of memory operations, it is
1099 possible for a hazard condition intended for a cache line to instead
1100 be incorrectly associated with a different cache line. This false
1101 hazard might then cause a processor deadlock. The workaround enables
1102 the L1 caching of the NEON accesses and disables the PLD instruction
1103 in the ACTLR register. Note that setting specific bits in the ACTLR
1104 register may not be available in non-secure mode.
1105
0516e464
CM
1106config ARM_ERRATA_460075
1107 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1108 depends on CPU_V7
1109 help
1110 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1111 erratum. Any asynchronous access to the L2 cache may encounter a
1112 situation in which recent store transactions to the L2 cache are lost
1113 and overwritten with stale memory contents from external memory. The
1114 workaround disables the write-allocate mode for the L2 cache via the
1115 ACTLR register. Note that setting specific bits in the ACTLR register
1116 may not be available in non-secure mode.
1117
9f05027c
WD
1118config ARM_ERRATA_742230
1119 bool "ARM errata: DMB operation may be faulty"
1120 depends on CPU_V7 && SMP
1121 help
1122 This option enables the workaround for the 742230 Cortex-A9
1123 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1124 between two write operations may not ensure the correct visibility
1125 ordering of the two writes. This workaround sets a specific bit in
1126 the diagnostic register of the Cortex-A9 which causes the DMB
1127 instruction to behave as a DSB, ensuring the correct behaviour of
1128 the two writes.
1129
a672e99b
WD
1130config ARM_ERRATA_742231
1131 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1132 depends on CPU_V7 && SMP
1133 help
1134 This option enables the workaround for the 742231 Cortex-A9
1135 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1136 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1137 accessing some data located in the same cache line, may get corrupted
1138 data due to bad handling of the address hazard when the line gets
1139 replaced from one of the CPUs at the same time as another CPU is
1140 accessing it. This workaround sets specific bits in the diagnostic
1141 register of the Cortex-A9 which reduces the linefill issuing
1142 capabilities of the processor.
1143
9e65582a
SS
1144config PL310_ERRATA_588369
1145 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1146 depends on CACHE_L2X0 && ARCH_OMAP4
1147 help
1148 The PL310 L2 cache controller implements three types of Clean &
1149 Invalidate maintenance operations: by Physical Address
1150 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1151 They are architecturally defined to behave as the execution of a
1152 clean operation followed immediately by an invalidate operation,
1153 both performing to the same memory location. This functionality
1154 is not correctly implemented in PL310 as clean lines are not
1155 invalidated as a result of these operations. Note that this errata
1156 uses Texas Instrument's secure monitor api.
cdf357f1
WD
1157
1158config ARM_ERRATA_720789
1159 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1160 depends on CPU_V7 && SMP
1161 help
1162 This option enables the workaround for the 720789 Cortex-A9 (prior to
1163 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1164 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1165 As a consequence of this erratum, some TLB entries which should be
1166 invalidated are not, resulting in an incoherency in the system page
1167 tables. The workaround changes the TLB flushing routines to invalidate
1168 entries regardless of the ASID.
475d92fc
WD
1169
1170config ARM_ERRATA_743622
1171 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1172 depends on CPU_V7
1173 help
1174 This option enables the workaround for the 743622 Cortex-A9
1175 (r2p0..r2p2) erratum. Under very rare conditions, a faulty
1176 optimisation in the Cortex-A9 Store Buffer may lead to data
1177 corruption. This workaround sets a specific bit in the diagnostic
1178 register of the Cortex-A9 which disables the Store Buffer
1179 optimisation, preventing the defect from occurring. This has no
1180 visible impact on the overall performance or power consumption of the
1181 processor.
1182
1da177e4
LT
1183endmenu
1184
1185source "arch/arm/common/Kconfig"
1186
1da177e4
LT
1187menu "Bus support"
1188
1189config ARM_AMBA
1190 bool
1191
1192config ISA
1193 bool
1da177e4
LT
1194 help
1195 Find out whether you have ISA slots on your motherboard. ISA is the
1196 name of a bus system, i.e. the way the CPU talks to the other stuff
1197 inside your box. Other bus systems are PCI, EISA, MicroChannel
1198 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1199 newer boards don't support it. If you have ISA, say Y, otherwise N.
1200
065909b9 1201# Select ISA DMA controller support
1da177e4
LT
1202config ISA_DMA
1203 bool
065909b9 1204 select ISA_DMA_API
1da177e4 1205
065909b9 1206# Select ISA DMA interface
5cae841b
AV
1207config ISA_DMA_API
1208 bool
5cae841b 1209
1da177e4 1210config PCI
0b05da72 1211 bool "PCI support" if MIGHT_HAVE_PCI
1da177e4
LT
1212 help
1213 Find out whether you have a PCI motherboard. PCI is the name of a
1214 bus system, i.e. the way the CPU talks to the other stuff inside
1215 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1216 VESA. If you have PCI, say Y, otherwise N.
1217
52882173
AV
1218config PCI_DOMAINS
1219 bool
1220 depends on PCI
1221
b080ac8a
MRJ
1222config PCI_NANOENGINE
1223 bool "BSE nanoEngine PCI support"
1224 depends on SA1100_NANOENGINE
1225 help
1226 Enable PCI on the BSE nanoEngine board.
1227
36e23590
MW
1228config PCI_SYSCALL
1229 def_bool PCI
1230
1da177e4
LT
1231# Select the host bridge type
1232config PCI_HOST_VIA82C505
1233 bool
1234 depends on PCI && ARCH_SHARK
1235 default y
1236
a0113a99
MR
1237config PCI_HOST_ITE8152
1238 bool
1239 depends on PCI && MACH_ARMCORE
1240 default y
1241 select DMABOUNCE
1242
1da177e4
LT
1243source "drivers/pci/Kconfig"
1244
1245source "drivers/pcmcia/Kconfig"
1246
1247endmenu
1248
1249menu "Kernel Features"
1250
0567a0c0
KH
1251source "kernel/time/Kconfig"
1252
1da177e4
LT
1253config SMP
1254 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
971acb9b 1255 depends on EXPERIMENTAL
bc28248e 1256 depends on GENERIC_CLOCKEVENTS
971acb9b 1257 depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
89c3dedf
DW
1258 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
1259 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
1260 ARCH_MSM_SCORPIONMP
f6dd9fa5 1261 select USE_GENERIC_SMP_HELPERS
89c3dedf 1262 select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
1da177e4
LT
1263 help
1264 This enables support for systems with more than one CPU. If you have
1265 a system with only one CPU, like most personal computers, say N. If
1266 you have a system with more than one CPU, say Y.
1267
1268 If you say N here, the kernel will run on single and multiprocessor
1269 machines, but will use only one CPU of a multiprocessor machine. If
1270 you say Y here, the kernel will run on many, but not all, single
1271 processor machines. On a single processor machine, the kernel will
1272 run faster if you say N here.
1273
03502faa 1274 See also <file:Documentation/i386/IO-APIC.txt>,
1da177e4 1275 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
50a23e6e 1276 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
1da177e4
LT
1277
1278 If you don't know what to do here, say N.
1279
f00ec48f
RK
1280config SMP_ON_UP
1281 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
1282 depends on EXPERIMENTAL
ed3768a8 1283 depends on SMP && !XIP
f00ec48f
RK
1284 default y
1285 help
1286 SMP kernels contain instructions which fail on non-SMP processors.
1287 Enabling this option allows the kernel to modify itself to make
1288 these instructions safe. Disabling it allows about 1K of space
1289 savings.
1290
1291 If you don't know what to do here, say Y.
1292
a8cbcd92
RK
1293config HAVE_ARM_SCU
1294 bool
1295 depends on SMP
1296 help
1297 This option enables support for the ARM system coherency unit
1298
f32f4ce2
RK
1299config HAVE_ARM_TWD
1300 bool
1301 depends on SMP
15095bb0 1302 select TICK_ONESHOT
f32f4ce2
RK
1303 help
1304 This options enables support for the ARM timer and watchdog unit
1305
8d5796d2
LB
1306choice
1307 prompt "Memory split"
1308 default VMSPLIT_3G
1309 help
1310 Select the desired split between kernel and user memory.
1311
1312 If you are not absolutely sure what you are doing, leave this
1313 option alone!
1314
1315 config VMSPLIT_3G
1316 bool "3G/1G user/kernel split"
1317 config VMSPLIT_2G
1318 bool "2G/2G user/kernel split"
1319 config VMSPLIT_1G
1320 bool "1G/3G user/kernel split"
1321endchoice
1322
1323config PAGE_OFFSET
1324 hex
1325 default 0x40000000 if VMSPLIT_1G
1326 default 0x80000000 if VMSPLIT_2G
1327 default 0xC0000000
1328
1da177e4
LT
1329config NR_CPUS
1330 int "Maximum number of CPUs (2-32)"
1331 range 2 32
1332 depends on SMP
1333 default "4"
1334
a054a811
RK
1335config HOTPLUG_CPU
1336 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1337 depends on SMP && HOTPLUG && EXPERIMENTAL
176bfc44 1338 depends on !ARCH_MSM
a054a811
RK
1339 help
1340 Say Y here to experiment with turning CPUs off and on. CPUs
1341 can be controlled through /sys/devices/system/cpu.
1342
37ee16ae
RK
1343config LOCAL_TIMERS
1344 bool "Use local timer interrupts"
971acb9b 1345 depends on SMP
37ee16ae 1346 default y
89c3dedf 1347 select HAVE_ARM_TWD if !ARCH_MSM_SCORPIONMP
37ee16ae
RK
1348 help
1349 Enable support for local timers on SMP platforms, rather then the
1350 legacy IPI broadcast method. Local timers allows the system
1351 accounting to be spread across the timer interval, preventing a
1352 "thundering herd" at every timer tick.
1353
d45a398f 1354source kernel/Kconfig.preempt
1da177e4 1355
f8065813
RK
1356config HZ
1357 int
49b7a491 1358 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
2192482e 1359 ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
bfe65704 1360 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
5248c657 1361 default AT91_TIMER_HZ if ARCH_AT91
5da3e714 1362 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
f8065813
RK
1363 default 100
1364
16c79651 1365config THUMB2_KERNEL
4a50bfe3 1366 bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
6e6fc998 1367 depends on CPU_V7 && !CPU_V6 && EXPERIMENTAL
16c79651
CM
1368 select AEABI
1369 select ARM_ASM_UNIFIED
1370 help
1371 By enabling this option, the kernel will be compiled in
1372 Thumb-2 mode. A compiler/assembler that understand the unified
1373 ARM-Thumb syntax is needed.
1374
1375 If unsure, say N.
1376
0becb088
CM
1377config ARM_ASM_UNIFIED
1378 bool
1379
704bdda0
NP
1380config AEABI
1381 bool "Use the ARM EABI to compile the kernel"
1382 help
1383 This option allows for the kernel to be compiled using the latest
1384 ARM ABI (aka EABI). This is only useful if you are using a user
1385 space environment that is also compiled with EABI.
1386
1387 Since there are major incompatibilities between the legacy ABI and
1388 EABI, especially with regard to structure member alignment, this
1389 option also changes the kernel syscall calling convention to
1390 disambiguate both ABIs and allow for backward compatibility support
1391 (selected with CONFIG_OABI_COMPAT).
1392
1393 To use this you need GCC version 4.0.0 or later.
1394
6c90c872 1395config OABI_COMPAT
a73a3ff1 1396 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
61c484d4 1397 depends on AEABI && EXPERIMENTAL
6c90c872
NP
1398 default y
1399 help
1400 This option preserves the old syscall interface along with the
1401 new (ARM EABI) one. It also provides a compatibility layer to
1402 intercept syscalls that have structure arguments which layout
1403 in memory differs between the legacy ABI and the new ARM EABI
1404 (only for non "thumb" binaries). This option adds a tiny
1405 overhead to all syscalls and produces a slightly larger kernel.
1406 If you know you'll be using only pure EABI user space then you
1407 can say N here. If this option is not selected and you attempt
1408 to execute a legacy ABI binary then the result will be
1409 UNPREDICTABLE (in fact it can be predicted that it won't work
1410 at all). If in doubt say Y.
1411
eb33575c 1412config ARCH_HAS_HOLES_MEMORYMODEL
e80d6a24 1413 bool
e80d6a24 1414
05944d74
RK
1415config ARCH_SPARSEMEM_ENABLE
1416 bool
1417
07a2f737
RK
1418config ARCH_SPARSEMEM_DEFAULT
1419 def_bool ARCH_SPARSEMEM_ENABLE
1420
05944d74 1421config ARCH_SELECT_MEMORY_MODEL
be370302 1422 def_bool ARCH_SPARSEMEM_ENABLE
c80d79d7 1423
053a96ca
NP
1424config HIGHMEM
1425 bool "High Memory Support (EXPERIMENTAL)"
1426 depends on MMU && EXPERIMENTAL
1427 help
1428 The address space of ARM processors is only 4 Gigabytes large
1429 and it has to accommodate user address space, kernel address
1430 space as well as some memory mapped IO. That means that, if you
1431 have a large amount of physical memory and/or IO, not all of the
1432 memory can be "permanently mapped" by the kernel. The physical
1433 memory that is not permanently mapped is called "high memory".
1434
1435 Depending on the selected kernel/user memory split, minimum
1436 vmalloc space and actual amount of RAM, you may not need this
1437 option which should result in a slightly faster kernel.
1438
1439 If unsure, say n.
1440
65cec8e3
RK
1441config HIGHPTE
1442 bool "Allocate 2nd-level pagetables from highmem"
1443 depends on HIGHMEM
1444 depends on !OUTER_CACHE
1445
1b8873a0
JI
1446config HW_PERF_EVENTS
1447 bool "Enable hardware performance counter support for perf events"
fe166148 1448 depends on PERF_EVENTS && CPU_HAS_PMU
1b8873a0
JI
1449 default y
1450 help
1451 Enable hardware performance counter support for perf events. If
1452 disabled, perf events will use software events only.
1453
354e6f72 1454config SPARSE_IRQ
c1ba6ba3 1455 def_bool n
354e6f72 1456 help
1457 This enables support for sparse irqs. This is useful in general
1458 as most CPUs have a fairly sparse array of IRQ vectors, which
1459 the irq_desc then maps directly on to. Systems with a high
1460 number of off-chip IRQs will want to treat this as
1461 experimental until they have been independently verified.
1462
3f22ab27
DH
1463source "mm/Kconfig"
1464
c1b2d970
MD
1465config FORCE_MAX_ZONEORDER
1466 int "Maximum zone order" if ARCH_SHMOBILE
1467 range 11 64 if ARCH_SHMOBILE
1468 default "9" if SA1111
1469 default "11"
1470 help
1471 The kernel memory allocator divides physically contiguous memory
1472 blocks into "zones", where each zone is a power of two number of
1473 pages. This option selects the largest power of two that the kernel
1474 keeps in the memory allocator. If you need to allocate very large
1475 blocks of physically contiguous memory, then you may need to
1476 increase this value.
1477
1478 This config option is actually maximum order plus one. For example,
1479 a value of 11 means that the largest free memory block is 2^10 pages.
1480
1da177e4
LT
1481config LEDS
1482 bool "Timer and CPU usage LEDs"
e055d5bf 1483 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
8c8fdbc9 1484 ARCH_EBSA285 || ARCH_INTEGRATOR || \
1da177e4
LT
1485 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1486 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
73a59c1c 1487 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
25329671 1488 ARCH_AT91 || ARCH_DAVINCI || \
ff3042fb 1489 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1da177e4
LT
1490 help
1491 If you say Y here, the LEDs on your machine will be used
1492 to provide useful information about your current system status.
1493
1494 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1495 be able to select which LEDs are active using the options below. If
1496 you are compiling a kernel for the EBSA-110 or the LART however, the
1497 red LED will simply flash regularly to indicate that the system is
1498 still functional. It is safe to say Y here if you have a CATS
1499 system, but the driver will do nothing.
1500
1501config LEDS_TIMER
1502 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
eebdf7d7
DB
1503 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1504 || MACH_OMAP_PERSEUS2
1da177e4 1505 depends on LEDS
0567a0c0 1506 depends on !GENERIC_CLOCKEVENTS
1da177e4
LT
1507 default y if ARCH_EBSA110
1508 help
1509 If you say Y here, one of the system LEDs (the green one on the
1510 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1511 will flash regularly to indicate that the system is still
1512 operational. This is mainly useful to kernel hackers who are
1513 debugging unstable kernels.
1514
1515 The LART uses the same LED for both Timer LED and CPU usage LED
1516 functions. You may choose to use both, but the Timer LED function
1517 will overrule the CPU usage LED.
1518
1519config LEDS_CPU
1520 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
eebdf7d7
DB
1521 !ARCH_OMAP) \
1522 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1523 || MACH_OMAP_PERSEUS2
1da177e4
LT
1524 depends on LEDS
1525 help
1526 If you say Y here, the red LED will be used to give a good real
1527 time indication of CPU usage, by lighting whenever the idle task
1528 is not currently executing.
1529
1530 The LART uses the same LED for both Timer LED and CPU usage LED
1531 functions. You may choose to use both, but the Timer LED function
1532 will overrule the CPU usage LED.
1533
1534config ALIGNMENT_TRAP
1535 bool
f12d0d7c 1536 depends on CPU_CP15_MMU
1da177e4 1537 default y if !ARCH_EBSA110
e119bfff 1538 select HAVE_PROC_CPU if PROC_FS
1da177e4 1539 help
84eb8d06 1540 ARM processors cannot fetch/store information which is not
1da177e4
LT
1541 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1542 address divisible by 4. On 32-bit ARM processors, these non-aligned
1543 fetch/store instructions will be emulated in software if you say
1544 here, which has a severe performance impact. This is necessary for
1545 correct operation of some network protocols. With an IP-only
1546 configuration it is safe to say N, otherwise say Y.
1547
39ec58f3
LB
1548config UACCESS_WITH_MEMCPY
1549 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1550 depends on MMU && EXPERIMENTAL
1551 default y if CPU_FEROCEON
1552 help
1553 Implement faster copy_to_user and clear_user methods for CPU
1554 cores where a 8-word STM instruction give significantly higher
1555 memory write throughput than a sequence of individual 32bit stores.
1556
1557 A possible side effect is a slight increase in scheduling latency
1558 between threads sharing the same address space if they invoke
1559 such copy operations with large buffers.
1560
1561 However, if the CPU data cache is using a write-allocate mode,
1562 this option is unlikely to provide any performance gain.
1563
70c70d97
NP
1564config SECCOMP
1565 bool
1566 prompt "Enable seccomp to safely compute untrusted bytecode"
1567 ---help---
1568 This kernel feature is useful for number crunching applications
1569 that may need to compute untrusted bytecode during their
1570 execution. By using pipes or other transports made available to
1571 the process as file descriptors supporting the read/write
1572 syscalls, it's possible to isolate those applications in
1573 their own address space using seccomp. Once seccomp is
1574 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1575 and the task is only allowed to execute a few safe syscalls
1576 defined by each seccomp mode.
1577
c743f380
NP
1578config CC_STACKPROTECTOR
1579 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
4a50bfe3 1580 depends on EXPERIMENTAL
c743f380
NP
1581 help
1582 This option turns on the -fstack-protector GCC feature. This
1583 feature puts, at the beginning of functions, a canary value on
1584 the stack just before the return address, and validates
1585 the value just before actually returning. Stack based buffer
1586 overflows (that need to overwrite this return address) now also
1587 overwrite the canary, which gets detected and the attack is then
1588 neutralized via a kernel panic.
1589 This feature requires gcc version 4.2 or above.
1590
73a65b3f
UKK
1591config DEPRECATED_PARAM_STRUCT
1592 bool "Provide old way to pass kernel parameters"
1593 help
1594 This was deprecated in 2001 and announced to live on for 5 years.
1595 Some old boot loaders still use this way.
1596
1da177e4
LT
1597endmenu
1598
1599menu "Boot options"
1600
1601# Compressed boot loader in ROM. Yes, we really want to ask about
1602# TEXT and BSS so we preserve their values in the config files.
1603config ZBOOT_ROM_TEXT
1604 hex "Compressed ROM boot loader base address"
1605 default "0"
1606 help
1607 The physical address at which the ROM-able zImage is to be
1608 placed in the target. Platforms which normally make use of
1609 ROM-able zImage formats normally set this to a suitable
1610 value in their defconfig file.
1611
1612 If ZBOOT_ROM is not enabled, this has no effect.
1613
1614config ZBOOT_ROM_BSS
1615 hex "Compressed ROM boot loader BSS address"
1616 default "0"
1617 help
f8c440b2
DF
1618 The base address of an area of read/write memory in the target
1619 for the ROM-able zImage which must be available while the
1620 decompressor is running. It must be large enough to hold the
1621 entire decompressed kernel plus an additional 128 KiB.
1622 Platforms which normally make use of ROM-able zImage formats
1623 normally set this to a suitable value in their defconfig file.
1da177e4
LT
1624
1625 If ZBOOT_ROM is not enabled, this has no effect.
1626
1627config ZBOOT_ROM
1628 bool "Compressed boot loader in ROM/flash"
1629 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1630 help
1631 Say Y here if you intend to execute your compressed kernel image
1632 (zImage) directly from ROM or flash. If unsure, say N.
1633
1634config CMDLINE
1635 string "Default kernel command string"
1636 default ""
1637 help
1638 On some architectures (EBSA110 and CATS), there is currently no way
1639 for the boot loader to pass arguments to the kernel. For these
1640 architectures, you should supply some command-line options at build
1641 time by entering them here. As a minimum, you should specify the
1642 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1643
92d2040d
AH
1644config CMDLINE_FORCE
1645 bool "Always use the default kernel command string"
1646 depends on CMDLINE != ""
1647 help
1648 Always use the default kernel command string, even if the boot
1649 loader passes other arguments to the kernel.
1650 This is useful if you cannot or don't want to change the
1651 command-line options your boot loader passes to the kernel.
1652
1653 If unsure, say N.
1654
1da177e4
LT
1655config XIP_KERNEL
1656 bool "Kernel Execute-In-Place from ROM"
1657 depends on !ZBOOT_ROM
1658 help
1659 Execute-In-Place allows the kernel to run from non-volatile storage
1660 directly addressable by the CPU, such as NOR flash. This saves RAM
1661 space since the text section of the kernel is not loaded from flash
1662 to RAM. Read-write sections, such as the data section and stack,
1663 are still copied to RAM. The XIP kernel is not compressed since
1664 it has to run directly from flash, so it will take more space to
1665 store it. The flash address used to link the kernel object files,
1666 and for storing it, is configuration dependent. Therefore, if you
1667 say Y here, you must know the proper physical address where to
1668 store the kernel image depending on your own flash memory usage.
1669
1670 Also note that the make target becomes "make xipImage" rather than
1671 "make zImage" or "make Image". The final kernel binary to put in
1672 ROM memory will be arch/arm/boot/xipImage.
1673
1674 If unsure, say N.
1675
1676config XIP_PHYS_ADDR
1677 hex "XIP Kernel Physical Location"
1678 depends on XIP_KERNEL
1679 default "0x00080000"
1680 help
1681 This is the physical address in your flash memory the kernel will
1682 be linked for and stored to. This address is dependent on your
1683 own flash usage.
1684
c587e4a6
RP
1685config KEXEC
1686 bool "Kexec system call (EXPERIMENTAL)"
1687 depends on EXPERIMENTAL
1688 help
1689 kexec is a system call that implements the ability to shutdown your
1690 current kernel, and to start another kernel. It is like a reboot
01dd2fbf 1691 but it is independent of the system firmware. And like a reboot
c587e4a6
RP
1692 you can start any kernel with it, not just Linux.
1693
1694 It is an ongoing process to be certain the hardware in a machine
1695 is properly shutdown, so do not be surprised if this code does not
1696 initially work for you. It may help to enable device hotplugging
1697 support.
1698
4cd9d6f7
RP
1699config ATAGS_PROC
1700 bool "Export atags in procfs"
b98d7291
UL
1701 depends on KEXEC
1702 default y
4cd9d6f7
RP
1703 help
1704 Should the atags used to boot the kernel be exported in an "atags"
1705 file in procfs. Useful with kexec.
1706
cb5d39b3
MW
1707config CRASH_DUMP
1708 bool "Build kdump crash kernel (EXPERIMENTAL)"
1709 depends on EXPERIMENTAL
1710 help
1711 Generate crash dump after being started by kexec. This should
1712 be normally only set in special crash dump kernels which are
1713 loaded in the main kernel with kexec-tools into a specially
1714 reserved region and then later executed after a crash by
1715 kdump/kexec. The crash dump kernel must be compiled to a
1716 memory address not used by the main kernel
1717
1718 For more details see Documentation/kdump/kdump.txt
1719
e69edc79
EM
1720config AUTO_ZRELADDR
1721 bool "Auto calculation of the decompressed kernel image address"
1722 depends on !ZBOOT_ROM && !ARCH_U300
1723 help
1724 ZRELADDR is the physical address where the decompressed kernel
1725 image will be placed. If AUTO_ZRELADDR is selected, the address
1726 will be determined at run-time by masking the current IP with
1727 0xf8000000. This assumes the zImage being placed in the first 128MB
1728 from start of memory.
1729
1da177e4
LT
1730endmenu
1731
ac9d7efc 1732menu "CPU Power Management"
1da177e4 1733
89c52ed4 1734if ARCH_HAS_CPUFREQ
1da177e4
LT
1735
1736source "drivers/cpufreq/Kconfig"
1737
64f102b6
YS
1738config CPU_FREQ_IMX
1739 tristate "CPUfreq driver for i.MX CPUs"
1740 depends on ARCH_MXC && CPU_FREQ
1741 help
1742 This enables the CPUfreq driver for i.MX CPUs.
1743
1da177e4
LT
1744config CPU_FREQ_SA1100
1745 bool
1da177e4
LT
1746
1747config CPU_FREQ_SA1110
1748 bool
1da177e4
LT
1749
1750config CPU_FREQ_INTEGRATOR
1751 tristate "CPUfreq driver for ARM Integrator CPUs"
1752 depends on ARCH_INTEGRATOR && CPU_FREQ
1753 default y
1754 help
1755 This enables the CPUfreq driver for ARM Integrator CPUs.
1756
1757 For details, take a look at <file:Documentation/cpu-freq>.
1758
1759 If in doubt, say Y.
1760
9e2697ff
RK
1761config CPU_FREQ_PXA
1762 bool
1763 depends on CPU_FREQ && ARCH_PXA && PXA25x
1764 default y
1765 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1766
b3748ddd
MB
1767config CPU_FREQ_S3C64XX
1768 bool "CPUfreq support for Samsung S3C64XX CPUs"
1769 depends on CPU_FREQ && CPU_S3C6410
1770
9d56c02a
BD
1771config CPU_FREQ_S3C
1772 bool
1773 help
1774 Internal configuration node for common cpufreq on Samsung SoC
1775
1776config CPU_FREQ_S3C24XX
4a50bfe3 1777 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
9d56c02a
BD
1778 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1779 select CPU_FREQ_S3C
1780 help
1781 This enables the CPUfreq driver for the Samsung S3C24XX family
1782 of CPUs.
1783
1784 For details, take a look at <file:Documentation/cpu-freq>.
1785
1786 If in doubt, say N.
1787
1788config CPU_FREQ_S3C24XX_PLL
4a50bfe3 1789 bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
9d56c02a
BD
1790 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1791 help
1792 Compile in support for changing the PLL frequency from the
1793 S3C24XX series CPUfreq driver. The PLL takes time to settle
1794 after a frequency change, so by default it is not enabled.
1795
1796 This also means that the PLL tables for the selected CPU(s) will
1797 be built which may increase the size of the kernel image.
1798
1799config CPU_FREQ_S3C24XX_DEBUG
1800 bool "Debug CPUfreq Samsung driver core"
1801 depends on CPU_FREQ_S3C24XX
1802 help
1803 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1804
1805config CPU_FREQ_S3C24XX_IODEBUG
1806 bool "Debug CPUfreq Samsung driver IO timing"
1807 depends on CPU_FREQ_S3C24XX
1808 help
1809 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1810
e6d197a6
BD
1811config CPU_FREQ_S3C24XX_DEBUGFS
1812 bool "Export debugfs for CPUFreq"
1813 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1814 help
1815 Export status information via debugfs.
1816
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LT
1817endif
1818
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RK
1819source "drivers/cpuidle/Kconfig"
1820
1821endmenu
1822
1da177e4
LT
1823menu "Floating point emulation"
1824
1825comment "At least one emulation must be selected"
1826
1827config FPE_NWFPE
1828 bool "NWFPE math emulation"
593c252a 1829 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
1da177e4
LT
1830 ---help---
1831 Say Y to include the NWFPE floating point emulator in the kernel.
1832 This is necessary to run most binaries. Linux does not currently
1833 support floating point hardware so you need to say Y here even if
1834 your machine has an FPA or floating point co-processor podule.
1835
1836 You may say N here if you are going to load the Acorn FPEmulator
1837 early in the bootup.
1838
1839config FPE_NWFPE_XP
1840 bool "Support extended precision"
bedf142b 1841 depends on FPE_NWFPE
1da177e4
LT
1842 help
1843 Say Y to include 80-bit support in the kernel floating-point
1844 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1845 Note that gcc does not generate 80-bit operations by default,
1846 so in most cases this option only enlarges the size of the
1847 floating point emulator without any good reason.
1848
1849 You almost surely want to say N here.
1850
1851config FPE_FASTFPE
1852 bool "FastFPE math emulation (EXPERIMENTAL)"
8993a44c 1853 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1da177e4
LT
1854 ---help---
1855 Say Y here to include the FAST floating point emulator in the kernel.
1856 This is an experimental much faster emulator which now also has full
1857 precision for the mantissa. It does not support any exceptions.
1858 It is very simple, and approximately 3-6 times faster than NWFPE.
1859
1860 It should be sufficient for most programs. It may be not suitable
1861 for scientific calculations, but you have to check this for yourself.
1862 If you do not feel you need a faster FP emulation you should better
1863 choose NWFPE.
1864
1865config VFP
1866 bool "VFP-format floating point maths"
c00d4ffd 1867 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1da177e4
LT
1868 help
1869 Say Y to include VFP support code in the kernel. This is needed
1870 if your hardware includes a VFP unit.
1871
1872 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1873 release notes and additional status information.
1874
1875 Say N if your target does not have VFP hardware.
1876
25ebee02
CM
1877config VFPv3
1878 bool
1879 depends on VFP
1880 default y if CPU_V7
1881
b5872db4
CM
1882config NEON
1883 bool "Advanced SIMD (NEON) Extension support"
1884 depends on VFPv3 && CPU_V7
1885 help
1886 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1887 Extension.
1888
1da177e4
LT
1889endmenu
1890
1891menu "Userspace binary formats"
1892
1893source "fs/Kconfig.binfmt"
1894
1895config ARTHUR
1896 tristate "RISC OS personality"
704bdda0 1897 depends on !AEABI
1da177e4
LT
1898 help
1899 Say Y here to include the kernel code necessary if you want to run
1900 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1901 experimental; if this sounds frightening, say N and sleep in peace.
1902 You can also say M here to compile this support as a module (which
1903 will be called arthur).
1904
1905endmenu
1906
1907menu "Power management options"
1908
eceab4ac 1909source "kernel/power/Kconfig"
1da177e4 1910
f4cb5700
JB
1911config ARCH_SUSPEND_POSSIBLE
1912 def_bool y
1913
1da177e4
LT
1914endmenu
1915
d5950b43
SR
1916source "net/Kconfig"
1917
ac25150f 1918source "drivers/Kconfig"
1da177e4
LT
1919
1920source "fs/Kconfig"
1921
1da177e4
LT
1922source "arch/arm/Kconfig.debug"
1923
1924source "security/Kconfig"
1925
1926source "crypto/Kconfig"
1927
1928source "lib/Kconfig"
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