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ARM: cns3xxx: Add basic support for Cavium Networks CNS3xxx processors
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1da177e4
LT
1#
2# For a description of the syntax of this configuration file,
3# see Documentation/kbuild/kconfig-language.txt.
4#
5
6mainmenu "Linux Kernel Configuration"
7
8config ARM
9 bool
10 default y
e17c6d56 11 select HAVE_AOUT
2064c946 12 select HAVE_IDE
12b824fb 13 select RTC_LIB
75e7153a 14 select SYS_SUPPORTS_APM_EMULATION
24b44a66 15 select GENERIC_ATOMIC64 if (!CPU_32v6K)
42d4b839 16 select HAVE_OPROFILE
5cbad0eb 17 select HAVE_ARCH_KGDB
3f550096 18 select HAVE_KPROBES if (!XIP_KERNEL)
9edddaa2 19 select HAVE_KRETPROBES if (HAVE_KPROBES)
606576ce 20 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
1fe53268 21 select HAVE_GENERIC_DMA_COHERENT
e7db7b42
AT
22 select HAVE_KERNEL_GZIP
23 select HAVE_KERNEL_LZO
7ada189f
JI
24 select HAVE_PERF_EVENTS
25 select PERF_USE_VMALLOC
1da177e4
LT
26 help
27 The ARM series is a line of low-power-consumption RISC chip designs
f6c8965a 28 licensed by ARM Ltd and targeted at embedded applications and
1da177e4 29 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
f6c8965a 30 manufactured, but legacy ARM-based PC hardware remains popular in
1da177e4
LT
31 Europe. There is an ARM Linux project with a web page at
32 <http://www.arm.linux.org.uk/>.
33
1a189b97
RK
34config HAVE_PWM
35 bool
36
75e7153a
RB
37config SYS_SUPPORTS_APM_EMULATION
38 bool
39
0a938b97
DB
40config GENERIC_GPIO
41 bool
0a938b97 42
746140c7
KH
43config GENERIC_TIME
44 bool
746140c7 45
0567a0c0
KH
46config GENERIC_CLOCKEVENTS
47 bool
0567a0c0 48
a8655e83
CM
49config GENERIC_CLOCKEVENTS_BROADCAST
50 bool
51 depends on GENERIC_CLOCKEVENTS
52 default y if SMP && !LOCAL_TIMERS
53
bc581770
LW
54config HAVE_TCM
55 bool
56 select GENERIC_ALLOCATOR
57
e119bfff
RK
58config HAVE_PROC_CPU
59 bool
60
5ea81769
AV
61config NO_IOPORT
62 bool
5ea81769 63
1da177e4
LT
64config EISA
65 bool
66 ---help---
67 The Extended Industry Standard Architecture (EISA) bus was
68 developed as an open alternative to the IBM MicroChannel bus.
69
70 The EISA bus provided some of the features of the IBM MicroChannel
71 bus while maintaining backward compatibility with cards made for
72 the older ISA bus. The EISA bus saw limited use between 1988 and
73 1995 when it was made obsolete by the PCI bus.
74
75 Say Y here if you are building a kernel for an EISA-based machine.
76
77 Otherwise, say N.
78
79config SBUS
80 bool
81
82config MCA
83 bool
84 help
85 MicroChannel Architecture is found in some IBM PS/2 machines and
86 laptops. It is a bus system similar to PCI or ISA. See
87 <file:Documentation/mca.txt> (and especially the web page given
88 there) before attempting to build an MCA bus kernel.
89
4a2581a0
TG
90config GENERIC_HARDIRQS
91 bool
92 default y
93
f16fb1ec
RK
94config STACKTRACE_SUPPORT
95 bool
96 default y
97
f76e9154
NP
98config HAVE_LATENCYTOP_SUPPORT
99 bool
100 depends on !SMP
101 default y
102
f16fb1ec
RK
103config LOCKDEP_SUPPORT
104 bool
105 default y
106
7ad1bcb2
RK
107config TRACE_IRQFLAGS_SUPPORT
108 bool
109 default y
110
4a2581a0
TG
111config HARDIRQS_SW_RESEND
112 bool
113 default y
114
115config GENERIC_IRQ_PROBE
116 bool
117 default y
118
95c354fe
NP
119config GENERIC_LOCKBREAK
120 bool
121 default y
122 depends on SMP && PREEMPT
123
1da177e4
LT
124config RWSEM_GENERIC_SPINLOCK
125 bool
126 default y
127
128config RWSEM_XCHGADD_ALGORITHM
129 bool
130
f0d1b0b3
DH
131config ARCH_HAS_ILOG2_U32
132 bool
f0d1b0b3
DH
133
134config ARCH_HAS_ILOG2_U64
135 bool
f0d1b0b3 136
89c52ed4
BD
137config ARCH_HAS_CPUFREQ
138 bool
139 help
140 Internal node to signify that the ARCH has CPUFREQ support
141 and that the relevant menu configurations are displayed for
142 it.
143
b89c3b16
AM
144config GENERIC_HWEIGHT
145 bool
146 default y
147
1da177e4
LT
148config GENERIC_CALIBRATE_DELAY
149 bool
150 default y
151
a08b6b79
AV
152config ARCH_MAY_HAVE_PC_FDC
153 bool
154
5ac6da66
CL
155config ZONE_DMA
156 bool
5ac6da66 157
ccd7ab7f
FT
158config NEED_DMA_MAP_STATE
159 def_bool y
160
1da177e4
LT
161config GENERIC_ISA_DMA
162 bool
163
1da177e4
LT
164config FIQ
165 bool
166
034d2f5a
AV
167config ARCH_MTD_XIP
168 bool
169
60a752ef 170config GENERIC_HARDIRQS_NO__DO_IRQ
60a752ef
PZ
171 def_bool y
172
d6d502fa
KK
173config ARM_L1_CACHE_SHIFT_6
174 bool
175 help
176 Setting ARM L1 cache line size to 64 Bytes.
177
c0ffa3a9
MD
178if OPROFILE
179
180config OPROFILE_ARMV6
181 def_bool y
182 depends on CPU_V6 && !SMP
183 select OPROFILE_ARM11_CORE
184
185config OPROFILE_MPCORE
186 def_bool y
187 depends on CPU_V6 && SMP
188 select OPROFILE_ARM11_CORE
189
190config OPROFILE_ARM11_CORE
191 bool
192
d7ac4e28
JP
193config OPROFILE_ARMV7
194 def_bool y
195 depends on CPU_V7 && !SMP
196 bool
197
c0ffa3a9
MD
198endif
199
c760fc19
HC
200config VECTORS_BASE
201 hex
6afd6fae 202 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
c760fc19
HC
203 default DRAM_BASE if REMAP_VECTORS_TO_RAM
204 default 0x00000000
205 help
206 The base address of exception vectors.
207
1da177e4
LT
208source "init/Kconfig"
209
dc52ddc0
MH
210source "kernel/Kconfig.freezer"
211
1da177e4
LT
212menu "System Type"
213
3c427975
HC
214config MMU
215 bool "MMU-based Paged Memory Management Support"
216 default y
217 help
218 Select if you want MMU-based virtualised addressing space
219 support by paged memory management. If unsure, say 'Y'.
220
ccf50e23
RK
221#
222# The "ARM system type" choice list is ordered alphabetically by option
223# text. Please add new entries in the option alphabetic order.
224#
1da177e4
LT
225choice
226 prompt "ARM system type"
6a0e2430 227 default ARCH_VERSATILE
1da177e4 228
4af6fee1
DS
229config ARCH_AAEC2000
230 bool "Agilent AAEC-2000 based"
c750815e 231 select CPU_ARM920T
4af6fee1 232 select ARM_AMBA
9483a578 233 select HAVE_CLK
4af6fee1
DS
234 help
235 This enables support for systems based on the Agilent AAEC-2000
236
237config ARCH_INTEGRATOR
238 bool "ARM Ltd. Integrator family"
239 select ARM_AMBA
89c52ed4 240 select ARCH_HAS_CPUFREQ
9483a578 241 select HAVE_CLK
d72fbdf0 242 select COMMON_CLKDEV
4af6fee1
DS
243 select ICST525
244 help
245 Support for ARM's Integrator platform.
246
247config ARCH_REALVIEW
248 bool "ARM Ltd. RealView family"
249 select ARM_AMBA
9483a578 250 select HAVE_CLK
cf30fb4a 251 select COMMON_CLKDEV
4af6fee1 252 select ICST307
85802afe 253 select GENERIC_TIME
ae30ceac 254 select GENERIC_CLOCKEVENTS
eb7fffa3 255 select ARCH_WANT_OPTIONAL_GPIOLIB
b56ba8aa 256 select GPIO_PL061 if GPIOLIB
4af6fee1
DS
257 help
258 This enables support for ARM Ltd RealView boards.
259
260config ARCH_VERSATILE
261 bool "ARM Ltd. Versatile family"
262 select ARM_AMBA
263 select ARM_VIC
9483a578 264 select HAVE_CLK
71a06da0 265 select COMMON_CLKDEV
4af6fee1 266 select ICST307
b49c87c2 267 select GENERIC_TIME
89df1272 268 select GENERIC_CLOCKEVENTS
bbeddc43 269 select ARCH_WANT_OPTIONAL_GPIOLIB
4af6fee1
DS
270 help
271 This enables support for ARM Ltd Versatile board.
272
8fc5ffa0
AV
273config ARCH_AT91
274 bool "Atmel AT91"
0a938b97 275 select GENERIC_GPIO
f373e8c0 276 select ARCH_REQUIRE_GPIOLIB
93686ae8 277 select HAVE_CLK
4af6fee1 278 help
2b3b3516
AV
279 This enables support for systems based on the Atmel AT91RM9200,
280 AT91SAM9 and AT91CAP9 processors.
4af6fee1 281
ccf50e23
RK
282config ARCH_BCMRING
283 bool "Broadcom BCMRING"
284 depends on MMU
285 select CPU_V6
286 select ARM_AMBA
287 select COMMON_CLKDEV
288 select GENERIC_TIME
289 select GENERIC_CLOCKEVENTS
290 select ARCH_WANT_OPTIONAL_GPIOLIB
291 help
292 Support for Broadcom's BCMRing platform.
293
1da177e4 294config ARCH_CLPS711X
4af6fee1 295 bool "Cirrus Logic CLPS711x/EP721x-based"
c750815e 296 select CPU_ARM720T
f999b8bd
MM
297 help
298 Support for Cirrus Logic 711x/721x based boards.
1da177e4 299
d94f944e
AV
300config ARCH_CNS3XXX
301 bool "Cavium Networks CNS3XXX family"
302 select CPU_V6
303 select GENERIC_TIME
304 select GENERIC_CLOCKEVENTS
305 select ARM_GIC
306 help
307 Support for Cavium Networks CNS3XXX platform.
308
788c9700
RK
309config ARCH_GEMINI
310 bool "Cortina Systems Gemini"
311 select CPU_FA526
312 select GENERIC_GPIO
313 select ARCH_REQUIRE_GPIOLIB
314 help
315 Support for the Cortina Systems Gemini family SoCs
316
1da177e4
LT
317config ARCH_EBSA110
318 bool "EBSA-110"
c750815e 319 select CPU_SA110
f7e68bbf 320 select ISA
c5eb2a2b 321 select NO_IOPORT
1da177e4
LT
322 help
323 This is an evaluation board for the StrongARM processor available
f6c8965a 324 from Digital. It has limited hardware on-board, including an
1da177e4
LT
325 Ethernet interface, two PCMCIA sockets, two serial ports and a
326 parallel port.
327
e7736d47
LB
328config ARCH_EP93XX
329 bool "EP93xx-based"
c750815e 330 select CPU_ARM920T
e7736d47
LB
331 select ARM_AMBA
332 select ARM_VIC
4e9f9fd5 333 select GENERIC_GPIO
9483a578 334 select HAVE_CLK
ae696fd5 335 select COMMON_CLKDEV
7444a72e 336 select ARCH_REQUIRE_GPIOLIB
eb33575c 337 select ARCH_HAS_HOLES_MEMORYMODEL
e7736d47
LB
338 help
339 This enables support for the Cirrus EP93xx series of CPUs.
340
1da177e4
LT
341config ARCH_FOOTBRIDGE
342 bool "FootBridge"
c750815e 343 select CPU_SA110
1da177e4 344 select FOOTBRIDGE
f999b8bd
MM
345 help
346 Support for systems based on the DC21285 companion chip
347 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1da177e4 348
788c9700
RK
349config ARCH_MXC
350 bool "Freescale MXC/iMX-based"
351 select GENERIC_TIME
352 select GENERIC_CLOCKEVENTS
788c9700 353 select ARCH_REQUIRE_GPIOLIB
a2ab67fa 354 select HAVE_CLK
03e09cd8 355 select COMMON_CLKDEV
788c9700
RK
356 help
357 Support for Freescale MXC/iMX-based family of processors
358
7bd0f2f5 359config ARCH_STMP3XXX
360 bool "Freescale STMP3xxx"
361 select CPU_ARM926T
362 select HAVE_CLK
363 select COMMON_CLKDEV
364 select ARCH_REQUIRE_GPIOLIB
365 select GENERIC_TIME
366 select GENERIC_CLOCKEVENTS
367 select GENERIC_GPIO
368 select USB_ARCH_HAS_EHCI
369 help
370 Support for systems based on the Freescale 3xxx CPUs.
371
4af6fee1
DS
372config ARCH_NETX
373 bool "Hilscher NetX based"
c750815e 374 select CPU_ARM926T
4af6fee1 375 select ARM_VIC
2fcfe6b8 376 select GENERIC_CLOCKEVENTS
21edecd3 377 select GENERIC_TIME
f999b8bd 378 help
4af6fee1
DS
379 This enables support for systems based on the Hilscher NetX Soc
380
381config ARCH_H720X
382 bool "Hynix HMS720x-based"
c750815e 383 select CPU_ARM720T
4af6fee1
DS
384 select ISA_DMA_API
385 help
386 This enables support for systems based on the Hynix HMS720x
387
3b938be6
RK
388config ARCH_IOP13XX
389 bool "IOP13xx-based"
390 depends on MMU
c750815e 391 select CPU_XSC3
3b938be6
RK
392 select PLAT_IOP
393 select PCI
394 select ARCH_SUPPORTS_MSI
8d5796d2 395 select VMSPLIT_1G
3b938be6
RK
396 help
397 Support for Intel's IOP13XX (XScale) family of processors.
398
3f7e5815
LB
399config ARCH_IOP32X
400 bool "IOP32x-based"
a4f7e763 401 depends on MMU
c750815e 402 select CPU_XSCALE
7ae1f7ec 403 select PLAT_IOP
f7e68bbf 404 select PCI
63f385cd 405 select GENERIC_GPIO
bb2b180c 406 select ARCH_REQUIRE_GPIOLIB
f999b8bd 407 help
3f7e5815
LB
408 Support for Intel's 80219 and IOP32X (XScale) family of
409 processors.
410
411config ARCH_IOP33X
412 bool "IOP33x-based"
413 depends on MMU
c750815e 414 select CPU_XSCALE
7ae1f7ec 415 select PLAT_IOP
3f7e5815 416 select PCI
63f385cd 417 select GENERIC_GPIO
bb2b180c 418 select ARCH_REQUIRE_GPIOLIB
3f7e5815
LB
419 help
420 Support for Intel's IOP33X (XScale) family of processors.
1da177e4 421
3b938be6
RK
422config ARCH_IXP23XX
423 bool "IXP23XX-based"
a4f7e763 424 depends on MMU
c750815e 425 select CPU_XSC3
3b938be6 426 select PCI
f999b8bd 427 help
3b938be6 428 Support for Intel's IXP23xx (XScale) family of processors.
1da177e4
LT
429
430config ARCH_IXP2000
431 bool "IXP2400/2800-based"
a4f7e763 432 depends on MMU
c750815e 433 select CPU_XSCALE
f7e68bbf 434 select PCI
f999b8bd
MM
435 help
436 Support for Intel's IXP2400/2800 (XScale) family of processors.
1da177e4 437
3b938be6
RK
438config ARCH_IXP4XX
439 bool "IXP4xx-based"
a4f7e763 440 depends on MMU
c750815e 441 select CPU_XSCALE
8858e9af 442 select GENERIC_GPIO
3b938be6
RK
443 select GENERIC_TIME
444 select GENERIC_CLOCKEVENTS
485bdde7 445 select DMABOUNCE if PCI
c4713074 446 help
3b938be6 447 Support for Intel's IXP4XX (XScale) family of processors.
c4713074 448
1da177e4
LT
449config ARCH_L7200
450 bool "LinkUp-L7200"
c750815e 451 select CPU_ARM720T
1da177e4
LT
452 select FIQ
453 help
454 Say Y here if you intend to run this kernel on a LinkUp Systems
455 L7200 Software Development Board which uses an ARM720T processor.
456 Information on this board can be obtained at:
457
458 <http://www.linkupsys.com/>
459
460 If you have any questions or comments about the Linux kernel port
461 to this board, send e-mail to <sjhill@cotw.com>.
462
edabd38e
SB
463config ARCH_DOVE
464 bool "Marvell Dove"
465 select PCI
466 select GENERIC_GPIO
467 select ARCH_REQUIRE_GPIOLIB
468 select GENERIC_TIME
469 select GENERIC_CLOCKEVENTS
470 select PLAT_ORION
471 help
472 Support for the Marvell Dove SoC 88AP510
473
651c74c7
SB
474config ARCH_KIRKWOOD
475 bool "Marvell Kirkwood"
c750815e 476 select CPU_FEROCEON
651c74c7 477 select PCI
4c213430 478 select GENERIC_GPIO
a8865655 479 select ARCH_REQUIRE_GPIOLIB
651c74c7
SB
480 select GENERIC_TIME
481 select GENERIC_CLOCKEVENTS
482 select PLAT_ORION
483 help
484 Support for the following Marvell Kirkwood series SoCs:
485 88F6180, 88F6192 and 88F6281.
486
777f9beb
LB
487config ARCH_LOKI
488 bool "Marvell Loki (88RC8480)"
c750815e 489 select CPU_FEROCEON
777f9beb
LB
490 select GENERIC_TIME
491 select GENERIC_CLOCKEVENTS
492 select PLAT_ORION
493 help
494 Support for the Marvell Loki (88RC8480) SoC.
495
794d15b2
SS
496config ARCH_MV78XX0
497 bool "Marvell MV78xx0"
c750815e 498 select CPU_FEROCEON
794d15b2 499 select PCI
b95a13d7 500 select GENERIC_GPIO
a8865655 501 select ARCH_REQUIRE_GPIOLIB
794d15b2
SS
502 select GENERIC_TIME
503 select GENERIC_CLOCKEVENTS
504 select PLAT_ORION
505 help
506 Support for the following Marvell MV78xx0 series SoCs:
507 MV781x0, MV782x0.
508
9dd0b194 509config ARCH_ORION5X
585cf175
TP
510 bool "Marvell Orion"
511 depends on MMU
c750815e 512 select CPU_FEROCEON
038ee083 513 select PCI
01af72e4 514 select GENERIC_GPIO
a8865655 515 select ARCH_REQUIRE_GPIOLIB
51cbff1d
TP
516 select GENERIC_TIME
517 select GENERIC_CLOCKEVENTS
69b02f6a 518 select PLAT_ORION
585cf175 519 help
9dd0b194 520 Support for the following Marvell Orion 5x series SoCs:
d2b2a6bb 521 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
d323ade1 522 Orion-2 (5281), Orion-1-90 (6183).
585cf175 523
788c9700 524config ARCH_MMP
2f7e8fae 525 bool "Marvell PXA168/910/MMP2"
788c9700
RK
526 depends on MMU
527 select GENERIC_GPIO
528 select ARCH_REQUIRE_GPIOLIB
529 select HAVE_CLK
530 select COMMON_CLKDEV
531 select GENERIC_TIME
532 select GENERIC_CLOCKEVENTS
533 select TICK_ONESHOT
534 select PLAT_PXA
535 help
2f7e8fae 536 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
788c9700
RK
537
538config ARCH_KS8695
539 bool "Micrel/Kendin KS8695"
540 select CPU_ARM922T
541 select GENERIC_GPIO
542 select ARCH_REQUIRE_GPIOLIB
543 help
544 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
545 System-on-Chip devices.
546
547config ARCH_NS9XXX
548 bool "NetSilicon NS9xxx"
549 select CPU_ARM926T
550 select GENERIC_GPIO
551 select GENERIC_TIME
552 select GENERIC_CLOCKEVENTS
553 select HAVE_CLK
554 help
555 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
556 System.
557
558 <http://www.digi.com/products/microprocessors/index.jsp>
559
560config ARCH_W90X900
561 bool "Nuvoton W90X900 CPU"
562 select CPU_ARM926T
c52d3d68 563 select ARCH_REQUIRE_GPIOLIB
564 select GENERIC_GPIO
d2c24195 565 select HAVE_CLK
0e4a34bb 566 select COMMON_CLKDEV
58b5369e 567 select GENERIC_TIME
568 select GENERIC_CLOCKEVENTS
788c9700 569 help
a8bc4ead 570 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
571 At present, the w90x900 has been renamed nuc900, regarding
572 the ARM series product line, you can login the following
573 link address to know more.
574
575 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
576 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
788c9700 577
a62e9030 578config ARCH_NUC93X
579 bool "Nuvoton NUC93X CPU"
580 select CPU_ARM926T
581 select HAVE_CLK
582 select COMMON_CLKDEV
583 help
584 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
585 low-power and high performance MPEG-4/JPEG multimedia controller chip.
586
4af6fee1
DS
587config ARCH_PNX4008
588 bool "Philips Nexperia PNX4008 Mobile"
c750815e 589 select CPU_ARM926T
9483a578 590 select HAVE_CLK
6985a5ad 591 select COMMON_CLKDEV
4af6fee1
DS
592 help
593 This enables support for Philips PNX4008 mobile platform.
594
1da177e4 595config ARCH_PXA
2c8086a5 596 bool "PXA2xx/PXA3xx-based"
a4f7e763 597 depends on MMU
034d2f5a 598 select ARCH_MTD_XIP
89c52ed4 599 select ARCH_HAS_CPUFREQ
0a938b97 600 select GENERIC_GPIO
9483a578 601 select HAVE_CLK
8c3abc7d 602 select COMMON_CLKDEV
7444a72e 603 select ARCH_REQUIRE_GPIOLIB
45cf5eef 604 select GENERIC_TIME
981d0f39 605 select GENERIC_CLOCKEVENTS
a88264c2 606 select TICK_ONESHOT
bd5ce433 607 select PLAT_PXA
f999b8bd 608 help
2c8086a5 609 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
1da177e4 610
788c9700
RK
611config ARCH_MSM
612 bool "Qualcomm MSM"
613 select CPU_V6
49cbe786
EM
614 select GENERIC_TIME
615 select GENERIC_CLOCKEVENTS
49cbe786 616 help
788c9700
RK
617 Support for Qualcomm MSM7K based systems. This runs on the ARM11
618 apps processor of the MSM7K and depends on a shared memory
619 interface to the ARM9 modem processor which runs the baseband stack
620 and controls some vital subsystems (clock and power control, etc).
49cbe786 621
c793c1b0
MD
622config ARCH_SHMOBILE
623 bool "Renesas SH-Mobile"
624 help
625 Support for Renesas's SH-Mobile ARM platforms
626
1da177e4
LT
627config ARCH_RPC
628 bool "RiscPC"
629 select ARCH_ACORN
630 select FIQ
631 select TIMER_ACORN
a08b6b79 632 select ARCH_MAY_HAVE_PC_FDC
341eb781 633 select HAVE_PATA_PLATFORM
065909b9 634 select ISA_DMA_API
5ea81769 635 select NO_IOPORT
07f841b7 636 select ARCH_SPARSEMEM_ENABLE
1da177e4
LT
637 help
638 On the Acorn Risc-PC, Linux can support the internal IDE disk and
639 CD-ROM interface, serial and parallel port, and the floppy drive.
640
641config ARCH_SA1100
642 bool "SA1100-based"
c750815e 643 select CPU_SA1100
f7e68bbf 644 select ISA
05944d74 645 select ARCH_SPARSEMEM_ENABLE
034d2f5a 646 select ARCH_MTD_XIP
89c52ed4 647 select ARCH_HAS_CPUFREQ
1937f5b9 648 select CPU_FREQ
0a938b97 649 select GENERIC_GPIO
d142b6e7 650 select GENERIC_TIME
3e238be2 651 select GENERIC_CLOCKEVENTS
9483a578 652 select HAVE_CLK
3e238be2 653 select TICK_ONESHOT
7444a72e 654 select ARCH_REQUIRE_GPIOLIB
f999b8bd
MM
655 help
656 Support for StrongARM 11x0 based boards.
1da177e4
LT
657
658config ARCH_S3C2410
e4d06e39 659 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
0a938b97 660 select GENERIC_GPIO
9d56c02a 661 select ARCH_HAS_CPUFREQ
9483a578 662 select HAVE_CLK
1da177e4
LT
663 help
664 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
665 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
f6c8965a 666 the Samsung SMDK2410 development board (and derivatives).
1da177e4 667
a08ab637
BD
668config ARCH_S3C64XX
669 bool "Samsung S3C64XX"
89f1fa08 670 select PLAT_SAMSUNG
89f0ce72 671 select CPU_V6
a08ab637 672 select GENERIC_GPIO
89f0ce72 673 select ARM_VIC
a08ab637 674 select HAVE_CLK
89f0ce72 675 select NO_IOPORT
89c52ed4 676 select ARCH_HAS_CPUFREQ
89f0ce72
BD
677 select ARCH_REQUIRE_GPIOLIB
678 select SAMSUNG_CLKSRC
679 select SAMSUNG_IRQ_VIC_TIMER
680 select SAMSUNG_IRQ_UART
681 select S3C_GPIO_TRACK
682 select S3C_GPIO_PULL_UPDOWN
683 select S3C_GPIO_CFG_S3C24XX
684 select S3C_GPIO_CFG_S3C64XX
685 select S3C_DEV_NAND
686 select USB_ARCH_HAS_OHCI
687 select SAMSUNG_GPIOLIB_4BIT
a08ab637
BD
688 help
689 Samsung S3C64XX series based systems
690
c4ffccdd
KK
691config ARCH_S5P6440
692 bool "Samsung S5P6440"
693 select CPU_V6
694 select GENERIC_GPIO
695 select HAVE_CLK
696 help
697 Samsung S5P6440 CPU based systems
698
550db7f1
KK
699config ARCH_S5P6442
700 bool "Samsung S5P6442"
701 select CPU_V6
702 select GENERIC_GPIO
703 select HAVE_CLK
704 help
705 Samsung S5P6442 CPU based systems
706
5a7652f2
BM
707config ARCH_S5PC1XX
708 bool "Samsung S5PC1XX"
709 select GENERIC_GPIO
710 select HAVE_CLK
711 select CPU_V7
d6d502fa 712 select ARM_L1_CACHE_SHIFT_6
5a7652f2
BM
713 help
714 Samsung S5PC1XX series based systems
715
170f4e42
KK
716config ARCH_S5PV210
717 bool "Samsung S5PV210/S5PC110"
718 select CPU_V7
719 select GENERIC_GPIO
720 select HAVE_CLK
721 select ARM_L1_CACHE_SHIFT_6
722 help
723 Samsung S5PV210/S5PC110 series based systems
724
1da177e4
LT
725config ARCH_SHARK
726 bool "Shark"
c750815e 727 select CPU_SA110
f7e68bbf
RK
728 select ISA
729 select ISA_DMA
3bca103a 730 select ZONE_DMA
f7e68bbf 731 select PCI
f999b8bd
MM
732 help
733 Support for the StrongARM based Digital DNARD machine, also known
734 as "Shark" (<http://www.shark-linux.de/shark.html>).
1da177e4
LT
735
736config ARCH_LH7A40X
737 bool "Sharp LH7A40X"
c750815e 738 select CPU_ARM922T
4ba3f7c5
RK
739 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
740 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
1da177e4
LT
741 help
742 Say Y here for systems based on one of the Sharp LH7A40X
743 System on a Chip processors. These CPUs include an ARM922T
744 core with a wide array of integrated devices for
745 hand-held and low-power applications.
746
d98aac75
LW
747config ARCH_U300
748 bool "ST-Ericsson U300 Series"
749 depends on MMU
750 select CPU_ARM926T
bc581770 751 select HAVE_TCM
d98aac75
LW
752 select ARM_AMBA
753 select ARM_VIC
754 select GENERIC_TIME
755 select GENERIC_CLOCKEVENTS
756 select HAVE_CLK
757 select COMMON_CLKDEV
758 select GENERIC_GPIO
759 help
760 Support for ST-Ericsson U300 series mobile platforms.
761
ccf50e23
RK
762config ARCH_U8500
763 bool "ST-Ericsson U8500 Series"
764 select CPU_V7
765 select ARM_AMBA
766 select GENERIC_TIME
767 select GENERIC_CLOCKEVENTS
768 select COMMON_CLKDEV
769 help
770 Support for ST-Ericsson's Ux500 architecture
771
772config ARCH_NOMADIK
773 bool "STMicroelectronics Nomadik"
774 select ARM_AMBA
775 select ARM_VIC
776 select CPU_ARM926T
777 select HAVE_CLK
778 select COMMON_CLKDEV
779 select GENERIC_TIME
780 select GENERIC_CLOCKEVENTS
781 select GENERIC_GPIO
782 select ARCH_REQUIRE_GPIOLIB
783 help
784 Support for the Nomadik platform by ST-Ericsson
785
7c6337e2
KH
786config ARCH_DAVINCI
787 bool "TI DaVinci"
c750815e 788 select CPU_ARM926T
7c6337e2
KH
789 select GENERIC_TIME
790 select GENERIC_CLOCKEVENTS
3d9edf09 791 select GENERIC_GPIO
dce1115b 792 select ARCH_REQUIRE_GPIOLIB
9483a578 793 select HAVE_CLK
3bca103a 794 select ZONE_DMA
9232fcc9 795 select HAVE_IDE
c5b736d0 796 select COMMON_CLKDEV
20e9969b 797 select GENERIC_ALLOCATOR
ae88e05a 798 select ARCH_HAS_HOLES_MEMORYMODEL
7c6337e2
KH
799 help
800 Support for TI's DaVinci platform.
801
3b938be6
RK
802config ARCH_OMAP
803 bool "TI OMAP"
804 select GENERIC_GPIO
9483a578 805 select HAVE_CLK
7444a72e 806 select ARCH_REQUIRE_GPIOLIB
89c52ed4 807 select ARCH_HAS_CPUFREQ
3b938be6 808 select GENERIC_TIME
06cad098 809 select GENERIC_CLOCKEVENTS
9af915da 810 select ARCH_HAS_HOLES_MEMORYMODEL
3b938be6
RK
811 help
812 Support for TI's OMAP platform (OMAP1 and OMAP2).
813
1da177e4
LT
814endchoice
815
ccf50e23
RK
816#
817# This is sorted alphabetically by mach-* pathname. However, plat-*
818# Kconfigs may be included either alphabetically (according to the
819# plat- suffix) or along side the corresponding mach-* source.
820#
95b8f20f
RK
821source "arch/arm/mach-aaec2000/Kconfig"
822
823source "arch/arm/mach-at91/Kconfig"
824
825source "arch/arm/mach-bcmring/Kconfig"
826
1da177e4
LT
827source "arch/arm/mach-clps711x/Kconfig"
828
d94f944e
AV
829source "arch/arm/mach-cns3xxx/Kconfig"
830
95b8f20f
RK
831source "arch/arm/mach-davinci/Kconfig"
832
833source "arch/arm/mach-dove/Kconfig"
834
e7736d47
LB
835source "arch/arm/mach-ep93xx/Kconfig"
836
1da177e4
LT
837source "arch/arm/mach-footbridge/Kconfig"
838
59d3a193
PZ
839source "arch/arm/mach-gemini/Kconfig"
840
95b8f20f
RK
841source "arch/arm/mach-h720x/Kconfig"
842
1da177e4
LT
843source "arch/arm/mach-integrator/Kconfig"
844
3f7e5815
LB
845source "arch/arm/mach-iop32x/Kconfig"
846
847source "arch/arm/mach-iop33x/Kconfig"
1da177e4 848
285f5fa7
DW
849source "arch/arm/mach-iop13xx/Kconfig"
850
1da177e4
LT
851source "arch/arm/mach-ixp4xx/Kconfig"
852
853source "arch/arm/mach-ixp2000/Kconfig"
854
c4713074
LB
855source "arch/arm/mach-ixp23xx/Kconfig"
856
95b8f20f
RK
857source "arch/arm/mach-kirkwood/Kconfig"
858
859source "arch/arm/mach-ks8695/Kconfig"
860
861source "arch/arm/mach-lh7a40x/Kconfig"
862
777f9beb
LB
863source "arch/arm/mach-loki/Kconfig"
864
95b8f20f
RK
865source "arch/arm/mach-msm/Kconfig"
866
794d15b2
SS
867source "arch/arm/mach-mv78xx0/Kconfig"
868
95b8f20f 869source "arch/arm/plat-mxc/Kconfig"
1da177e4 870
95b8f20f 871source "arch/arm/mach-netx/Kconfig"
49cbe786 872
95b8f20f
RK
873source "arch/arm/mach-nomadik/Kconfig"
874source "arch/arm/plat-nomadik/Kconfig"
875
876source "arch/arm/mach-ns9xxx/Kconfig"
1da177e4 877
186f93ea 878source "arch/arm/mach-nuc93x/Kconfig"
1da177e4 879
d48af15e
TL
880source "arch/arm/plat-omap/Kconfig"
881
882source "arch/arm/mach-omap1/Kconfig"
1da177e4 883
1dbae815
TL
884source "arch/arm/mach-omap2/Kconfig"
885
9dd0b194 886source "arch/arm/mach-orion5x/Kconfig"
585cf175 887
95b8f20f
RK
888source "arch/arm/mach-pxa/Kconfig"
889source "arch/arm/plat-pxa/Kconfig"
585cf175 890
95b8f20f
RK
891source "arch/arm/mach-mmp/Kconfig"
892
893source "arch/arm/mach-realview/Kconfig"
894
895source "arch/arm/mach-sa1100/Kconfig"
edabd38e 896
cf383678 897source "arch/arm/plat-samsung/Kconfig"
a21765a7 898source "arch/arm/plat-s3c24xx/Kconfig"
c4ffccdd 899source "arch/arm/plat-s5p/Kconfig"
5a7652f2 900source "arch/arm/plat-s5pc1xx/Kconfig"
a21765a7
BD
901
902if ARCH_S3C2410
903source "arch/arm/mach-s3c2400/Kconfig"
1da177e4 904source "arch/arm/mach-s3c2410/Kconfig"
a21765a7
BD
905source "arch/arm/mach-s3c2412/Kconfig"
906source "arch/arm/mach-s3c2440/Kconfig"
e4d06e39 907source "arch/arm/mach-s3c2443/Kconfig"
a21765a7 908endif
1da177e4 909
a08ab637 910if ARCH_S3C64XX
431107ea 911source "arch/arm/mach-s3c64xx/Kconfig"
a08ab637
BD
912endif
913
c4ffccdd
KK
914source "arch/arm/mach-s5p6440/Kconfig"
915
550db7f1 916source "arch/arm/mach-s5p6442/Kconfig"
7bd0f2f5 917
5a7652f2
BM
918if ARCH_S5PC1XX
919source "arch/arm/mach-s5pc100/Kconfig"
920endif
921
170f4e42
KK
922source "arch/arm/mach-s5pv210/Kconfig"
923
882d01f9 924source "arch/arm/mach-shmobile/Kconfig"
52c543f9 925
882d01f9 926source "arch/arm/plat-stmp3xxx/Kconfig"
9e73c84c 927
95b8f20f 928source "arch/arm/mach-u300/Kconfig"
1da177e4 929
95b8f20f 930source "arch/arm/mach-ux500/Kconfig"
1da177e4
LT
931
932source "arch/arm/mach-versatile/Kconfig"
933
7ec80ddf 934source "arch/arm/mach-w90x900/Kconfig"
935
1da177e4
LT
936# Definitions to make life easier
937config ARCH_ACORN
938 bool
939
7ae1f7ec
LB
940config PLAT_IOP
941 bool
469d3044 942 select GENERIC_CLOCKEVENTS
980f2296 943 select GENERIC_TIME
7ae1f7ec 944
69b02f6a
LB
945config PLAT_ORION
946 bool
947
bd5ce433
EM
948config PLAT_PXA
949 bool
950
1da177e4
LT
951source arch/arm/mm/Kconfig
952
afe4b25e
LB
953config IWMMXT
954 bool "Enable iWMMXt support"
40305a58
EM
955 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
956 default y if PXA27x || PXA3xx || ARCH_MMP
afe4b25e
LB
957 help
958 Enable support for iWMMXt context switching at run time if
959 running on a CPU that supports it.
960
1da177e4
LT
961# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
962config XSCALE_PMU
963 bool
964 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
965 default y
966
0f4f0672
JI
967config CPU_HAS_PMU
968 depends on CPU_V6 || CPU_V7 || XSCALE_PMU
969 default y
970 bool
971
3b93e7b0
HC
972if !MMU
973source "arch/arm/Kconfig-nommu"
974endif
975
9cba3ccc
CM
976config ARM_ERRATA_411920
977 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
978 depends on CPU_V6 && !SMP
979 help
980 Invalidation of the Instruction Cache operation can
981 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
982 It does not affect the MPCore. This option enables the ARM Ltd.
983 recommended workaround.
984
7ce236fc
CM
985config ARM_ERRATA_430973
986 bool "ARM errata: Stale prediction on replaced interworking branch"
987 depends on CPU_V7
988 help
989 This option enables the workaround for the 430973 Cortex-A8
990 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
991 interworking branch is replaced with another code sequence at the
992 same virtual address, whether due to self-modifying code or virtual
993 to physical address re-mapping, Cortex-A8 does not recover from the
994 stale interworking branch prediction. This results in Cortex-A8
995 executing the new code sequence in the incorrect ARM or Thumb state.
996 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
997 and also flushes the branch target cache at every context switch.
998 Note that setting specific bits in the ACTLR register may not be
999 available in non-secure mode.
1000
855c551f
CM
1001config ARM_ERRATA_458693
1002 bool "ARM errata: Processor deadlock when a false hazard is created"
1003 depends on CPU_V7
1004 help
1005 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1006 erratum. For very specific sequences of memory operations, it is
1007 possible for a hazard condition intended for a cache line to instead
1008 be incorrectly associated with a different cache line. This false
1009 hazard might then cause a processor deadlock. The workaround enables
1010 the L1 caching of the NEON accesses and disables the PLD instruction
1011 in the ACTLR register. Note that setting specific bits in the ACTLR
1012 register may not be available in non-secure mode.
1013
0516e464
CM
1014config ARM_ERRATA_460075
1015 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1016 depends on CPU_V7
1017 help
1018 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1019 erratum. Any asynchronous access to the L2 cache may encounter a
1020 situation in which recent store transactions to the L2 cache are lost
1021 and overwritten with stale memory contents from external memory. The
1022 workaround disables the write-allocate mode for the L2 cache via the
1023 ACTLR register. Note that setting specific bits in the ACTLR register
1024 may not be available in non-secure mode.
1025
9e65582a
SS
1026config PL310_ERRATA_588369
1027 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1028 depends on CACHE_L2X0 && ARCH_OMAP4
1029 help
1030 The PL310 L2 cache controller implements three types of Clean &
1031 Invalidate maintenance operations: by Physical Address
1032 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1033 They are architecturally defined to behave as the execution of a
1034 clean operation followed immediately by an invalidate operation,
1035 both performing to the same memory location. This functionality
1036 is not correctly implemented in PL310 as clean lines are not
1037 invalidated as a result of these operations. Note that this errata
1038 uses Texas Instrument's secure monitor api.
1da177e4
LT
1039endmenu
1040
1041source "arch/arm/common/Kconfig"
1042
1043config FORCE_MAX_ZONEORDER
1044 int
1045 depends on SA1111
1046 default "9"
1047
1048menu "Bus support"
1049
1050config ARM_AMBA
1051 bool
1052
1053config ISA
1054 bool
1da177e4
LT
1055 help
1056 Find out whether you have ISA slots on your motherboard. ISA is the
1057 name of a bus system, i.e. the way the CPU talks to the other stuff
1058 inside your box. Other bus systems are PCI, EISA, MicroChannel
1059 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1060 newer boards don't support it. If you have ISA, say Y, otherwise N.
1061
065909b9 1062# Select ISA DMA controller support
1da177e4
LT
1063config ISA_DMA
1064 bool
065909b9 1065 select ISA_DMA_API
1da177e4 1066
065909b9 1067# Select ISA DMA interface
5cae841b
AV
1068config ISA_DMA_API
1069 bool
5cae841b 1070
1da177e4 1071config PCI
a0113a99 1072 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
1da177e4
LT
1073 help
1074 Find out whether you have a PCI motherboard. PCI is the name of a
1075 bus system, i.e. the way the CPU talks to the other stuff inside
1076 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1077 VESA. If you have PCI, say Y, otherwise N.
1078
36e23590
MW
1079config PCI_SYSCALL
1080 def_bool PCI
1081
1da177e4
LT
1082# Select the host bridge type
1083config PCI_HOST_VIA82C505
1084 bool
1085 depends on PCI && ARCH_SHARK
1086 default y
1087
a0113a99
MR
1088config PCI_HOST_ITE8152
1089 bool
1090 depends on PCI && MACH_ARMCORE
1091 default y
1092 select DMABOUNCE
1093
1da177e4
LT
1094source "drivers/pci/Kconfig"
1095
1096source "drivers/pcmcia/Kconfig"
1097
1098endmenu
1099
1100menu "Kernel Features"
1101
0567a0c0
KH
1102source "kernel/time/Kconfig"
1103
1da177e4
LT
1104config SMP
1105 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
42578c82 1106 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
850265e8 1107 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
bc28248e 1108 depends on GENERIC_CLOCKEVENTS
f6dd9fa5 1109 select USE_GENERIC_SMP_HELPERS
850265e8 1110 select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
1da177e4
LT
1111 help
1112 This enables support for systems with more than one CPU. If you have
1113 a system with only one CPU, like most personal computers, say N. If
1114 you have a system with more than one CPU, say Y.
1115
1116 If you say N here, the kernel will run on single and multiprocessor
1117 machines, but will use only one CPU of a multiprocessor machine. If
1118 you say Y here, the kernel will run on many, but not all, single
1119 processor machines. On a single processor machine, the kernel will
1120 run faster if you say N here.
1121
03502faa 1122 See also <file:Documentation/i386/IO-APIC.txt>,
1da177e4
LT
1123 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1124 <http://www.linuxdoc.org/docs.html#howto>.
1125
1126 If you don't know what to do here, say N.
1127
a8cbcd92
RK
1128config HAVE_ARM_SCU
1129 bool
1130 depends on SMP
1131 help
1132 This option enables support for the ARM system coherency unit
1133
f32f4ce2
RK
1134config HAVE_ARM_TWD
1135 bool
1136 depends on SMP
1137 help
1138 This options enables support for the ARM timer and watchdog unit
1139
8d5796d2
LB
1140choice
1141 prompt "Memory split"
1142 default VMSPLIT_3G
1143 help
1144 Select the desired split between kernel and user memory.
1145
1146 If you are not absolutely sure what you are doing, leave this
1147 option alone!
1148
1149 config VMSPLIT_3G
1150 bool "3G/1G user/kernel split"
1151 config VMSPLIT_2G
1152 bool "2G/2G user/kernel split"
1153 config VMSPLIT_1G
1154 bool "1G/3G user/kernel split"
1155endchoice
1156
1157config PAGE_OFFSET
1158 hex
1159 default 0x40000000 if VMSPLIT_1G
1160 default 0x80000000 if VMSPLIT_2G
1161 default 0xC0000000
1162
1da177e4
LT
1163config NR_CPUS
1164 int "Maximum number of CPUs (2-32)"
1165 range 2 32
1166 depends on SMP
1167 default "4"
1168
a054a811
RK
1169config HOTPLUG_CPU
1170 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1171 depends on SMP && HOTPLUG && EXPERIMENTAL
1172 help
1173 Say Y here to experiment with turning CPUs off and on. CPUs
1174 can be controlled through /sys/devices/system/cpu.
1175
37ee16ae
RK
1176config LOCAL_TIMERS
1177 bool "Use local timer interrupts"
42578c82 1178 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
850265e8 1179 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
37ee16ae 1180 default y
850265e8 1181 select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
37ee16ae
RK
1182 help
1183 Enable support for local timers on SMP platforms, rather then the
1184 legacy IPI broadcast method. Local timers allows the system
1185 accounting to be spread across the timer interval, preventing a
1186 "thundering herd" at every timer tick.
1187
d45a398f 1188source kernel/Kconfig.preempt
1da177e4 1189
f8065813
RK
1190config HZ
1191 int
1192 default 128 if ARCH_L7200
170f4e42 1193 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
bfe65704 1194 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
5248c657 1195 default AT91_TIMER_HZ if ARCH_AT91
f8065813
RK
1196 default 100
1197
16c79651
CM
1198config THUMB2_KERNEL
1199 bool "Compile the kernel in Thumb-2 mode"
1200 depends on CPU_V7 && EXPERIMENTAL
1201 select AEABI
1202 select ARM_ASM_UNIFIED
1203 help
1204 By enabling this option, the kernel will be compiled in
1205 Thumb-2 mode. A compiler/assembler that understand the unified
1206 ARM-Thumb syntax is needed.
1207
1208 If unsure, say N.
1209
0becb088
CM
1210config ARM_ASM_UNIFIED
1211 bool
1212
704bdda0
NP
1213config AEABI
1214 bool "Use the ARM EABI to compile the kernel"
1215 help
1216 This option allows for the kernel to be compiled using the latest
1217 ARM ABI (aka EABI). This is only useful if you are using a user
1218 space environment that is also compiled with EABI.
1219
1220 Since there are major incompatibilities between the legacy ABI and
1221 EABI, especially with regard to structure member alignment, this
1222 option also changes the kernel syscall calling convention to
1223 disambiguate both ABIs and allow for backward compatibility support
1224 (selected with CONFIG_OABI_COMPAT).
1225
1226 To use this you need GCC version 4.0.0 or later.
1227
6c90c872 1228config OABI_COMPAT
a73a3ff1 1229 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
61c484d4 1230 depends on AEABI && EXPERIMENTAL
6c90c872
NP
1231 default y
1232 help
1233 This option preserves the old syscall interface along with the
1234 new (ARM EABI) one. It also provides a compatibility layer to
1235 intercept syscalls that have structure arguments which layout
1236 in memory differs between the legacy ABI and the new ARM EABI
1237 (only for non "thumb" binaries). This option adds a tiny
1238 overhead to all syscalls and produces a slightly larger kernel.
1239 If you know you'll be using only pure EABI user space then you
1240 can say N here. If this option is not selected and you attempt
1241 to execute a legacy ABI binary then the result will be
1242 UNPREDICTABLE (in fact it can be predicted that it won't work
1243 at all). If in doubt say Y.
1244
eb33575c 1245config ARCH_HAS_HOLES_MEMORYMODEL
e80d6a24 1246 bool
e80d6a24 1247
07a2f737 1248# Discontigmem is deprecated
3f22ab27 1249config ARCH_DISCONTIGMEM_ENABLE
1da177e4 1250 bool
1da177e4 1251
05944d74
RK
1252config ARCH_SPARSEMEM_ENABLE
1253 bool
1254
07a2f737
RK
1255config ARCH_SPARSEMEM_DEFAULT
1256 def_bool ARCH_SPARSEMEM_ENABLE
1257
05944d74 1258config ARCH_SELECT_MEMORY_MODEL
07a2f737 1259 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
05944d74 1260
c80d79d7
YG
1261config NODES_SHIFT
1262 int
1263 default "4" if ARCH_LH7A40X
1264 default "2"
1265 depends on NEED_MULTIPLE_NODES
1266
053a96ca
NP
1267config HIGHMEM
1268 bool "High Memory Support (EXPERIMENTAL)"
1269 depends on MMU && EXPERIMENTAL
1270 help
1271 The address space of ARM processors is only 4 Gigabytes large
1272 and it has to accommodate user address space, kernel address
1273 space as well as some memory mapped IO. That means that, if you
1274 have a large amount of physical memory and/or IO, not all of the
1275 memory can be "permanently mapped" by the kernel. The physical
1276 memory that is not permanently mapped is called "high memory".
1277
1278 Depending on the selected kernel/user memory split, minimum
1279 vmalloc space and actual amount of RAM, you may not need this
1280 option which should result in a slightly faster kernel.
1281
1282 If unsure, say n.
1283
65cec8e3
RK
1284config HIGHPTE
1285 bool "Allocate 2nd-level pagetables from highmem"
1286 depends on HIGHMEM
1287 depends on !OUTER_CACHE
1288
1b8873a0
JI
1289config HW_PERF_EVENTS
1290 bool "Enable hardware performance counter support for perf events"
796d1295 1291 depends on PERF_EVENTS && CPU_HAS_PMU && (CPU_V6 || CPU_V7)
1b8873a0
JI
1292 default y
1293 help
1294 Enable hardware performance counter support for perf events. If
1295 disabled, perf events will use software events only.
1296
3f22ab27
DH
1297source "mm/Kconfig"
1298
1da177e4
LT
1299config LEDS
1300 bool "Timer and CPU usage LEDs"
e055d5bf 1301 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
8c8fdbc9 1302 ARCH_EBSA285 || ARCH_INTEGRATOR || \
1da177e4
LT
1303 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1304 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
73a59c1c 1305 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
25329671 1306 ARCH_AT91 || ARCH_DAVINCI || \
ff3042fb 1307 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1da177e4
LT
1308 help
1309 If you say Y here, the LEDs on your machine will be used
1310 to provide useful information about your current system status.
1311
1312 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1313 be able to select which LEDs are active using the options below. If
1314 you are compiling a kernel for the EBSA-110 or the LART however, the
1315 red LED will simply flash regularly to indicate that the system is
1316 still functional. It is safe to say Y here if you have a CATS
1317 system, but the driver will do nothing.
1318
1319config LEDS_TIMER
1320 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
eebdf7d7
DB
1321 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1322 || MACH_OMAP_PERSEUS2
1da177e4 1323 depends on LEDS
0567a0c0 1324 depends on !GENERIC_CLOCKEVENTS
1da177e4
LT
1325 default y if ARCH_EBSA110
1326 help
1327 If you say Y here, one of the system LEDs (the green one on the
1328 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1329 will flash regularly to indicate that the system is still
1330 operational. This is mainly useful to kernel hackers who are
1331 debugging unstable kernels.
1332
1333 The LART uses the same LED for both Timer LED and CPU usage LED
1334 functions. You may choose to use both, but the Timer LED function
1335 will overrule the CPU usage LED.
1336
1337config LEDS_CPU
1338 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
eebdf7d7
DB
1339 !ARCH_OMAP) \
1340 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1341 || MACH_OMAP_PERSEUS2
1da177e4
LT
1342 depends on LEDS
1343 help
1344 If you say Y here, the red LED will be used to give a good real
1345 time indication of CPU usage, by lighting whenever the idle task
1346 is not currently executing.
1347
1348 The LART uses the same LED for both Timer LED and CPU usage LED
1349 functions. You may choose to use both, but the Timer LED function
1350 will overrule the CPU usage LED.
1351
1352config ALIGNMENT_TRAP
1353 bool
f12d0d7c 1354 depends on CPU_CP15_MMU
1da177e4 1355 default y if !ARCH_EBSA110
e119bfff 1356 select HAVE_PROC_CPU if PROC_FS
1da177e4 1357 help
84eb8d06 1358 ARM processors cannot fetch/store information which is not
1da177e4
LT
1359 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1360 address divisible by 4. On 32-bit ARM processors, these non-aligned
1361 fetch/store instructions will be emulated in software if you say
1362 here, which has a severe performance impact. This is necessary for
1363 correct operation of some network protocols. With an IP-only
1364 configuration it is safe to say N, otherwise say Y.
1365
39ec58f3
LB
1366config UACCESS_WITH_MEMCPY
1367 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1368 depends on MMU && EXPERIMENTAL
1369 default y if CPU_FEROCEON
1370 help
1371 Implement faster copy_to_user and clear_user methods for CPU
1372 cores where a 8-word STM instruction give significantly higher
1373 memory write throughput than a sequence of individual 32bit stores.
1374
1375 A possible side effect is a slight increase in scheduling latency
1376 between threads sharing the same address space if they invoke
1377 such copy operations with large buffers.
1378
1379 However, if the CPU data cache is using a write-allocate mode,
1380 this option is unlikely to provide any performance gain.
1381
1da177e4
LT
1382endmenu
1383
1384menu "Boot options"
1385
1386# Compressed boot loader in ROM. Yes, we really want to ask about
1387# TEXT and BSS so we preserve their values in the config files.
1388config ZBOOT_ROM_TEXT
1389 hex "Compressed ROM boot loader base address"
1390 default "0"
1391 help
1392 The physical address at which the ROM-able zImage is to be
1393 placed in the target. Platforms which normally make use of
1394 ROM-able zImage formats normally set this to a suitable
1395 value in their defconfig file.
1396
1397 If ZBOOT_ROM is not enabled, this has no effect.
1398
1399config ZBOOT_ROM_BSS
1400 hex "Compressed ROM boot loader BSS address"
1401 default "0"
1402 help
f8c440b2
DF
1403 The base address of an area of read/write memory in the target
1404 for the ROM-able zImage which must be available while the
1405 decompressor is running. It must be large enough to hold the
1406 entire decompressed kernel plus an additional 128 KiB.
1407 Platforms which normally make use of ROM-able zImage formats
1408 normally set this to a suitable value in their defconfig file.
1da177e4
LT
1409
1410 If ZBOOT_ROM is not enabled, this has no effect.
1411
1412config ZBOOT_ROM
1413 bool "Compressed boot loader in ROM/flash"
1414 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1415 help
1416 Say Y here if you intend to execute your compressed kernel image
1417 (zImage) directly from ROM or flash. If unsure, say N.
1418
1419config CMDLINE
1420 string "Default kernel command string"
1421 default ""
1422 help
1423 On some architectures (EBSA110 and CATS), there is currently no way
1424 for the boot loader to pass arguments to the kernel. For these
1425 architectures, you should supply some command-line options at build
1426 time by entering them here. As a minimum, you should specify the
1427 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1428
1429config XIP_KERNEL
1430 bool "Kernel Execute-In-Place from ROM"
1431 depends on !ZBOOT_ROM
1432 help
1433 Execute-In-Place allows the kernel to run from non-volatile storage
1434 directly addressable by the CPU, such as NOR flash. This saves RAM
1435 space since the text section of the kernel is not loaded from flash
1436 to RAM. Read-write sections, such as the data section and stack,
1437 are still copied to RAM. The XIP kernel is not compressed since
1438 it has to run directly from flash, so it will take more space to
1439 store it. The flash address used to link the kernel object files,
1440 and for storing it, is configuration dependent. Therefore, if you
1441 say Y here, you must know the proper physical address where to
1442 store the kernel image depending on your own flash memory usage.
1443
1444 Also note that the make target becomes "make xipImage" rather than
1445 "make zImage" or "make Image". The final kernel binary to put in
1446 ROM memory will be arch/arm/boot/xipImage.
1447
1448 If unsure, say N.
1449
1450config XIP_PHYS_ADDR
1451 hex "XIP Kernel Physical Location"
1452 depends on XIP_KERNEL
1453 default "0x00080000"
1454 help
1455 This is the physical address in your flash memory the kernel will
1456 be linked for and stored to. This address is dependent on your
1457 own flash usage.
1458
c587e4a6
RP
1459config KEXEC
1460 bool "Kexec system call (EXPERIMENTAL)"
1461 depends on EXPERIMENTAL
1462 help
1463 kexec is a system call that implements the ability to shutdown your
1464 current kernel, and to start another kernel. It is like a reboot
01dd2fbf 1465 but it is independent of the system firmware. And like a reboot
c587e4a6
RP
1466 you can start any kernel with it, not just Linux.
1467
1468 It is an ongoing process to be certain the hardware in a machine
1469 is properly shutdown, so do not be surprised if this code does not
1470 initially work for you. It may help to enable device hotplugging
1471 support.
1472
4cd9d6f7
RP
1473config ATAGS_PROC
1474 bool "Export atags in procfs"
b98d7291
UL
1475 depends on KEXEC
1476 default y
4cd9d6f7
RP
1477 help
1478 Should the atags used to boot the kernel be exported in an "atags"
1479 file in procfs. Useful with kexec.
1480
1da177e4
LT
1481endmenu
1482
ac9d7efc 1483menu "CPU Power Management"
1da177e4 1484
89c52ed4 1485if ARCH_HAS_CPUFREQ
1da177e4
LT
1486
1487source "drivers/cpufreq/Kconfig"
1488
1489config CPU_FREQ_SA1100
1490 bool
1da177e4
LT
1491
1492config CPU_FREQ_SA1110
1493 bool
1da177e4
LT
1494
1495config CPU_FREQ_INTEGRATOR
1496 tristate "CPUfreq driver for ARM Integrator CPUs"
1497 depends on ARCH_INTEGRATOR && CPU_FREQ
1498 default y
1499 help
1500 This enables the CPUfreq driver for ARM Integrator CPUs.
1501
1502 For details, take a look at <file:Documentation/cpu-freq>.
1503
1504 If in doubt, say Y.
1505
9e2697ff
RK
1506config CPU_FREQ_PXA
1507 bool
1508 depends on CPU_FREQ && ARCH_PXA && PXA25x
1509 default y
1510 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1511
b3748ddd
MB
1512config CPU_FREQ_S3C64XX
1513 bool "CPUfreq support for Samsung S3C64XX CPUs"
1514 depends on CPU_FREQ && CPU_S3C6410
1515
9d56c02a
BD
1516config CPU_FREQ_S3C
1517 bool
1518 help
1519 Internal configuration node for common cpufreq on Samsung SoC
1520
1521config CPU_FREQ_S3C24XX
1522 bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1523 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1524 select CPU_FREQ_S3C
1525 help
1526 This enables the CPUfreq driver for the Samsung S3C24XX family
1527 of CPUs.
1528
1529 For details, take a look at <file:Documentation/cpu-freq>.
1530
1531 If in doubt, say N.
1532
1533config CPU_FREQ_S3C24XX_PLL
1534 bool "Support CPUfreq changing of PLL frequency"
1535 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1536 help
1537 Compile in support for changing the PLL frequency from the
1538 S3C24XX series CPUfreq driver. The PLL takes time to settle
1539 after a frequency change, so by default it is not enabled.
1540
1541 This also means that the PLL tables for the selected CPU(s) will
1542 be built which may increase the size of the kernel image.
1543
1544config CPU_FREQ_S3C24XX_DEBUG
1545 bool "Debug CPUfreq Samsung driver core"
1546 depends on CPU_FREQ_S3C24XX
1547 help
1548 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1549
1550config CPU_FREQ_S3C24XX_IODEBUG
1551 bool "Debug CPUfreq Samsung driver IO timing"
1552 depends on CPU_FREQ_S3C24XX
1553 help
1554 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1555
e6d197a6
BD
1556config CPU_FREQ_S3C24XX_DEBUGFS
1557 bool "Export debugfs for CPUFreq"
1558 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1559 help
1560 Export status information via debugfs.
1561
1da177e4
LT
1562endif
1563
ac9d7efc
RK
1564source "drivers/cpuidle/Kconfig"
1565
1566endmenu
1567
1da177e4
LT
1568menu "Floating point emulation"
1569
1570comment "At least one emulation must be selected"
1571
1572config FPE_NWFPE
1573 bool "NWFPE math emulation"
8993a44c 1574 depends on !AEABI || OABI_COMPAT
1da177e4
LT
1575 ---help---
1576 Say Y to include the NWFPE floating point emulator in the kernel.
1577 This is necessary to run most binaries. Linux does not currently
1578 support floating point hardware so you need to say Y here even if
1579 your machine has an FPA or floating point co-processor podule.
1580
1581 You may say N here if you are going to load the Acorn FPEmulator
1582 early in the bootup.
1583
1584config FPE_NWFPE_XP
1585 bool "Support extended precision"
bedf142b 1586 depends on FPE_NWFPE
1da177e4
LT
1587 help
1588 Say Y to include 80-bit support in the kernel floating-point
1589 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1590 Note that gcc does not generate 80-bit operations by default,
1591 so in most cases this option only enlarges the size of the
1592 floating point emulator without any good reason.
1593
1594 You almost surely want to say N here.
1595
1596config FPE_FASTFPE
1597 bool "FastFPE math emulation (EXPERIMENTAL)"
8993a44c 1598 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1da177e4
LT
1599 ---help---
1600 Say Y here to include the FAST floating point emulator in the kernel.
1601 This is an experimental much faster emulator which now also has full
1602 precision for the mantissa. It does not support any exceptions.
1603 It is very simple, and approximately 3-6 times faster than NWFPE.
1604
1605 It should be sufficient for most programs. It may be not suitable
1606 for scientific calculations, but you have to check this for yourself.
1607 If you do not feel you need a faster FP emulation you should better
1608 choose NWFPE.
1609
1610config VFP
1611 bool "VFP-format floating point maths"
c00d4ffd 1612 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1da177e4
LT
1613 help
1614 Say Y to include VFP support code in the kernel. This is needed
1615 if your hardware includes a VFP unit.
1616
1617 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1618 release notes and additional status information.
1619
1620 Say N if your target does not have VFP hardware.
1621
25ebee02
CM
1622config VFPv3
1623 bool
1624 depends on VFP
1625 default y if CPU_V7
1626
b5872db4
CM
1627config NEON
1628 bool "Advanced SIMD (NEON) Extension support"
1629 depends on VFPv3 && CPU_V7
1630 help
1631 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1632 Extension.
1633
1da177e4
LT
1634endmenu
1635
1636menu "Userspace binary formats"
1637
1638source "fs/Kconfig.binfmt"
1639
1640config ARTHUR
1641 tristate "RISC OS personality"
704bdda0 1642 depends on !AEABI
1da177e4
LT
1643 help
1644 Say Y here to include the kernel code necessary if you want to run
1645 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1646 experimental; if this sounds frightening, say N and sleep in peace.
1647 You can also say M here to compile this support as a module (which
1648 will be called arthur).
1649
1650endmenu
1651
1652menu "Power management options"
1653
eceab4ac 1654source "kernel/power/Kconfig"
1da177e4 1655
f4cb5700
JB
1656config ARCH_SUSPEND_POSSIBLE
1657 def_bool y
1658
1da177e4
LT
1659endmenu
1660
d5950b43
SR
1661source "net/Kconfig"
1662
ac25150f 1663source "drivers/Kconfig"
1da177e4
LT
1664
1665source "fs/Kconfig"
1666
1da177e4
LT
1667source "arch/arm/Kconfig.debug"
1668
1669source "security/Kconfig"
1670
1671source "crypto/Kconfig"
1672
1673source "lib/Kconfig"