ARM: l2x0/pl310: Refactor Kconfig to be more maintainable
[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
d0ee9f40 6 select HAVE_IDE if PCI || ISA || PCMCIA
2778f620 7 select HAVE_MEMBLOCK
12b824fb 8 select RTC_LIB
75e7153a 9 select SYS_SUPPORTS_APM_EMULATION
a41297a0 10 select GENERIC_ATOMIC64 if (CPU_V6 || !CPU_32v6K || !AEABI)
fe166148 11 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
5cbad0eb 12 select HAVE_ARCH_KGDB
856bc356 13 select HAVE_KPROBES if !XIP_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
e399b1a4 27 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
ed60453f 28 select HAVE_C_RECORDMCOUNT
e2a93ecc
LB
29 select HAVE_GENERIC_HARDIRQS
30 select HAVE_SPARSE_IRQ
25a5662a 31 select GENERIC_IRQ_SHOW
1fb90263 32 select CPU_PM if (SUSPEND || CPU_IDLE)
1da177e4
LT
33 help
34 The ARM series is a line of low-power-consumption RISC chip designs
f6c8965a 35 licensed by ARM Ltd and targeted at embedded applications and
1da177e4 36 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
f6c8965a 37 manufactured, but legacy ARM-based PC hardware remains popular in
1da177e4
LT
38 Europe. There is an ARM Linux project with a web page at
39 <http://www.arm.linux.org.uk/>.
40
74facffe
RK
41config ARM_HAS_SG_CHAIN
42 bool
43
1a189b97
RK
44config HAVE_PWM
45 bool
46
0b05da72
HUK
47config MIGHT_HAVE_PCI
48 bool
49
75e7153a
RB
50config SYS_SUPPORTS_APM_EMULATION
51 bool
52
112f38a4
RK
53config HAVE_SCHED_CLOCK
54 bool
55
0a938b97
DB
56config GENERIC_GPIO
57 bool
0a938b97 58
5cfc8ee0
JS
59config ARCH_USES_GETTIMEOFFSET
60 bool
61 default n
746140c7 62
0567a0c0
KH
63config GENERIC_CLOCKEVENTS
64 bool
0567a0c0 65
a8655e83
CM
66config GENERIC_CLOCKEVENTS_BROADCAST
67 bool
68 depends on GENERIC_CLOCKEVENTS
5388a6b2 69 default y if SMP
a8655e83 70
bf9dd360
RH
71config KTIME_SCALAR
72 bool
73 default y
74
bc581770
LW
75config HAVE_TCM
76 bool
77 select GENERIC_ALLOCATOR
78
e119bfff
RK
79config HAVE_PROC_CPU
80 bool
81
5ea81769
AV
82config NO_IOPORT
83 bool
5ea81769 84
1da177e4
LT
85config EISA
86 bool
87 ---help---
88 The Extended Industry Standard Architecture (EISA) bus was
89 developed as an open alternative to the IBM MicroChannel bus.
90
91 The EISA bus provided some of the features of the IBM MicroChannel
92 bus while maintaining backward compatibility with cards made for
93 the older ISA bus. The EISA bus saw limited use between 1988 and
94 1995 when it was made obsolete by the PCI bus.
95
96 Say Y here if you are building a kernel for an EISA-based machine.
97
98 Otherwise, say N.
99
100config SBUS
101 bool
102
103config MCA
104 bool
105 help
106 MicroChannel Architecture is found in some IBM PS/2 machines and
107 laptops. It is a bus system similar to PCI or ISA. See
108 <file:Documentation/mca.txt> (and especially the web page given
109 there) before attempting to build an MCA bus kernel.
110
f16fb1ec
RK
111config STACKTRACE_SUPPORT
112 bool
113 default y
114
f76e9154
NP
115config HAVE_LATENCYTOP_SUPPORT
116 bool
117 depends on !SMP
118 default y
119
f16fb1ec
RK
120config LOCKDEP_SUPPORT
121 bool
122 default y
123
7ad1bcb2
RK
124config TRACE_IRQFLAGS_SUPPORT
125 bool
126 default y
127
4a2581a0
TG
128config HARDIRQS_SW_RESEND
129 bool
130 default y
131
132config GENERIC_IRQ_PROBE
133 bool
134 default y
135
95c354fe
NP
136config GENERIC_LOCKBREAK
137 bool
138 default y
139 depends on SMP && PREEMPT
140
1da177e4
LT
141config RWSEM_GENERIC_SPINLOCK
142 bool
143 default y
144
145config RWSEM_XCHGADD_ALGORITHM
146 bool
147
f0d1b0b3
DH
148config ARCH_HAS_ILOG2_U32
149 bool
f0d1b0b3
DH
150
151config ARCH_HAS_ILOG2_U64
152 bool
f0d1b0b3 153
89c52ed4
BD
154config ARCH_HAS_CPUFREQ
155 bool
156 help
157 Internal node to signify that the ARCH has CPUFREQ support
158 and that the relevant menu configurations are displayed for
159 it.
160
c7b0aff4
KH
161config ARCH_HAS_CPU_IDLE_WAIT
162 def_bool y
163
b89c3b16
AM
164config GENERIC_HWEIGHT
165 bool
166 default y
167
1da177e4
LT
168config GENERIC_CALIBRATE_DELAY
169 bool
170 default y
171
a08b6b79
Z
172config ARCH_MAY_HAVE_PC_FDC
173 bool
174
5ac6da66
CL
175config ZONE_DMA
176 bool
5ac6da66 177
ccd7ab7f
FT
178config NEED_DMA_MAP_STATE
179 def_bool y
180
1da177e4
LT
181config GENERIC_ISA_DMA
182 bool
183
1da177e4
LT
184config FIQ
185 bool
186
034d2f5a
AV
187config ARCH_MTD_XIP
188 bool
189
c760fc19
HC
190config VECTORS_BASE
191 hex
6afd6fae 192 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
c760fc19
HC
193 default DRAM_BASE if REMAP_VECTORS_TO_RAM
194 default 0x00000000
195 help
196 The base address of exception vectors.
197
dc21af99 198config ARM_PATCH_PHYS_VIRT
c1becedc
RK
199 bool "Patch physical to virtual translations at runtime" if EMBEDDED
200 default y
b511d75d 201 depends on !XIP_KERNEL && MMU
dc21af99
RK
202 depends on !ARCH_REALVIEW || !SPARSEMEM
203 help
111e9a5c
RK
204 Patch phys-to-virt and virt-to-phys translation functions at
205 boot and module load time according to the position of the
206 kernel in system memory.
dc21af99 207
111e9a5c 208 This can only be used with non-XIP MMU kernels where the base
daece596 209 of physical memory is at a 16MB boundary.
dc21af99 210
c1becedc
RK
211 Only disable this option if you know that you do not require
212 this feature (eg, building a kernel for a single machine) and
213 you need to shrink the kernel to the minimal size.
dc21af99 214
0cdc8b92 215config NEED_MACH_MEMORY_H
1b9f95f8
NP
216 bool
217 help
0cdc8b92
NP
218 Select this when mach/memory.h is required to provide special
219 definitions for this platform. The need for mach/memory.h should
220 be avoided when possible.
dc21af99 221
1b9f95f8
NP
222config PHYS_OFFSET
223 hex "Physical address of main memory"
0cdc8b92 224 depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H
111e9a5c 225 help
1b9f95f8
NP
226 Please provide the physical address corresponding to the
227 location of main memory in your system.
cada3c08 228
87e040b6
SG
229config GENERIC_BUG
230 def_bool y
231 depends on BUG
232
1da177e4
LT
233source "init/Kconfig"
234
dc52ddc0
MH
235source "kernel/Kconfig.freezer"
236
1da177e4
LT
237menu "System Type"
238
3c427975
HC
239config MMU
240 bool "MMU-based Paged Memory Management Support"
241 default y
242 help
243 Select if you want MMU-based virtualised addressing space
244 support by paged memory management. If unsure, say 'Y'.
245
ccf50e23
RK
246#
247# The "ARM system type" choice list is ordered alphabetically by option
248# text. Please add new entries in the option alphabetic order.
249#
1da177e4
LT
250choice
251 prompt "ARM system type"
6a0e2430 252 default ARCH_VERSATILE
1da177e4 253
4af6fee1
DS
254config ARCH_INTEGRATOR
255 bool "ARM Ltd. Integrator family"
256 select ARM_AMBA
89c52ed4 257 select ARCH_HAS_CPUFREQ
6d803ba7 258 select CLKDEV_LOOKUP
aa3831cf 259 select HAVE_MACH_CLKDEV
c5a0adb5 260 select ICST
13edd86d 261 select GENERIC_CLOCKEVENTS
f4b8b319 262 select PLAT_VERSATILE
c41b16f8 263 select PLAT_VERSATILE_FPGA_IRQ
0cdc8b92 264 select NEED_MACH_MEMORY_H
4af6fee1
DS
265 help
266 Support for ARM's Integrator platform.
267
268config ARCH_REALVIEW
269 bool "ARM Ltd. RealView family"
270 select ARM_AMBA
6d803ba7 271 select CLKDEV_LOOKUP
aa3831cf 272 select HAVE_MACH_CLKDEV
c5a0adb5 273 select ICST
ae30ceac 274 select GENERIC_CLOCKEVENTS
eb7fffa3 275 select ARCH_WANT_OPTIONAL_GPIOLIB
f4b8b319 276 select PLAT_VERSATILE
3cb5ee49 277 select PLAT_VERSATILE_CLCD
e3887714 278 select ARM_TIMER_SP804
b56ba8aa 279 select GPIO_PL061 if GPIOLIB
0cdc8b92 280 select NEED_MACH_MEMORY_H
4af6fee1
DS
281 help
282 This enables support for ARM Ltd RealView boards.
283
284config ARCH_VERSATILE
285 bool "ARM Ltd. Versatile family"
286 select ARM_AMBA
287 select ARM_VIC
6d803ba7 288 select CLKDEV_LOOKUP
aa3831cf 289 select HAVE_MACH_CLKDEV
c5a0adb5 290 select ICST
89df1272 291 select GENERIC_CLOCKEVENTS
bbeddc43 292 select ARCH_WANT_OPTIONAL_GPIOLIB
f4b8b319 293 select PLAT_VERSATILE
3414ba8c 294 select PLAT_VERSATILE_CLCD
c41b16f8 295 select PLAT_VERSATILE_FPGA_IRQ
e3887714 296 select ARM_TIMER_SP804
4af6fee1
DS
297 help
298 This enables support for ARM Ltd Versatile board.
299
ceade897
RK
300config ARCH_VEXPRESS
301 bool "ARM Ltd. Versatile Express family"
302 select ARCH_WANT_OPTIONAL_GPIOLIB
303 select ARM_AMBA
304 select ARM_TIMER_SP804
6d803ba7 305 select CLKDEV_LOOKUP
aa3831cf 306 select HAVE_MACH_CLKDEV
ceade897 307 select GENERIC_CLOCKEVENTS
ceade897 308 select HAVE_CLK
95c34f83 309 select HAVE_PATA_PLATFORM
ceade897
RK
310 select ICST
311 select PLAT_VERSATILE
0fb44b91 312 select PLAT_VERSATILE_CLCD
ceade897
RK
313 help
314 This enables support for the ARM Ltd Versatile Express boards.
315
8fc5ffa0
AV
316config ARCH_AT91
317 bool "Atmel AT91"
f373e8c0 318 select ARCH_REQUIRE_GPIOLIB
93686ae8 319 select HAVE_CLK
bd602995 320 select CLKDEV_LOOKUP
4af6fee1 321 help
2b3b3516
AV
322 This enables support for systems based on the Atmel AT91RM9200,
323 AT91SAM9 and AT91CAP9 processors.
4af6fee1 324
ccf50e23
RK
325config ARCH_BCMRING
326 bool "Broadcom BCMRING"
327 depends on MMU
328 select CPU_V6
329 select ARM_AMBA
82d63734 330 select ARM_TIMER_SP804
6d803ba7 331 select CLKDEV_LOOKUP
ccf50e23
RK
332 select GENERIC_CLOCKEVENTS
333 select ARCH_WANT_OPTIONAL_GPIOLIB
334 help
335 Support for Broadcom's BCMRing platform.
336
220e6cf7
RH
337config ARCH_HIGHBANK
338 bool "Calxeda Highbank-based"
339 select ARCH_WANT_OPTIONAL_GPIOLIB
340 select ARM_AMBA
341 select ARM_GIC
342 select ARM_TIMER_SP804
343 select CLKDEV_LOOKUP
344 select CPU_V7
345 select GENERIC_CLOCKEVENTS
346 select HAVE_ARM_SCU
ce5ea9f3 347 select MIGHT_HAVE_CACHE_L2X0
220e6cf7
RH
348 select USE_OF
349 help
350 Support for the Calxeda Highbank SoC based boards.
351
1da177e4 352config ARCH_CLPS711X
4af6fee1 353 bool "Cirrus Logic CLPS711x/EP721x-based"
c750815e 354 select CPU_ARM720T
5cfc8ee0 355 select ARCH_USES_GETTIMEOFFSET
0cdc8b92 356 select NEED_MACH_MEMORY_H
f999b8bd
MM
357 help
358 Support for Cirrus Logic 711x/721x based boards.
1da177e4 359
d94f944e
AV
360config ARCH_CNS3XXX
361 bool "Cavium Networks CNS3XXX family"
00d2711d 362 select CPU_V6K
d94f944e
AV
363 select GENERIC_CLOCKEVENTS
364 select ARM_GIC
ce5ea9f3 365 select MIGHT_HAVE_CACHE_L2X0
0b05da72 366 select MIGHT_HAVE_PCI
5f32f7a0 367 select PCI_DOMAINS if PCI
d94f944e
AV
368 help
369 Support for Cavium Networks CNS3XXX platform.
370
788c9700
RK
371config ARCH_GEMINI
372 bool "Cortina Systems Gemini"
373 select CPU_FA526
788c9700 374 select ARCH_REQUIRE_GPIOLIB
5cfc8ee0 375 select ARCH_USES_GETTIMEOFFSET
788c9700
RK
376 help
377 Support for the Cortina Systems Gemini family SoCs
378
3a6cb8ce
AB
379config ARCH_PRIMA2
380 bool "CSR SiRFSoC PRIMA2 ARM Cortex A9 Platform"
381 select CPU_V7
3a6cb8ce
AB
382 select NO_IOPORT
383 select GENERIC_CLOCKEVENTS
384 select CLKDEV_LOOKUP
385 select GENERIC_IRQ_CHIP
ce5ea9f3 386 select MIGHT_HAVE_CACHE_L2X0
3a6cb8ce
AB
387 select USE_OF
388 select ZONE_DMA
389 help
390 Support for CSR SiRFSoC ARM Cortex A9 Platform
391
1da177e4
LT
392config ARCH_EBSA110
393 bool "EBSA-110"
c750815e 394 select CPU_SA110
f7e68bbf 395 select ISA
c5eb2a2b 396 select NO_IOPORT
5cfc8ee0 397 select ARCH_USES_GETTIMEOFFSET
0cdc8b92 398 select NEED_MACH_MEMORY_H
1da177e4
LT
399 help
400 This is an evaluation board for the StrongARM processor available
f6c8965a 401 from Digital. It has limited hardware on-board, including an
1da177e4
LT
402 Ethernet interface, two PCMCIA sockets, two serial ports and a
403 parallel port.
404
e7736d47
LB
405config ARCH_EP93XX
406 bool "EP93xx-based"
c750815e 407 select CPU_ARM920T
e7736d47
LB
408 select ARM_AMBA
409 select ARM_VIC
6d803ba7 410 select CLKDEV_LOOKUP
7444a72e 411 select ARCH_REQUIRE_GPIOLIB
eb33575c 412 select ARCH_HAS_HOLES_MEMORYMODEL
5cfc8ee0 413 select ARCH_USES_GETTIMEOFFSET
5725aeae 414 select NEED_MACH_MEMORY_H
e7736d47
LB
415 help
416 This enables support for the Cirrus EP93xx series of CPUs.
417
1da177e4
LT
418config ARCH_FOOTBRIDGE
419 bool "FootBridge"
c750815e 420 select CPU_SA110
1da177e4 421 select FOOTBRIDGE
4e8d7637 422 select GENERIC_CLOCKEVENTS
d0ee9f40 423 select HAVE_IDE
0cdc8b92 424 select NEED_MACH_MEMORY_H
f999b8bd
MM
425 help
426 Support for systems based on the DC21285 companion chip
427 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1da177e4 428
788c9700
RK
429config ARCH_MXC
430 bool "Freescale MXC/iMX-based"
788c9700 431 select GENERIC_CLOCKEVENTS
788c9700 432 select ARCH_REQUIRE_GPIOLIB
6d803ba7 433 select CLKDEV_LOOKUP
234b6ced 434 select CLKSRC_MMIO
8b6c44f1 435 select GENERIC_IRQ_CHIP
c124befc 436 select HAVE_SCHED_CLOCK
ffa2ea3f 437 select MULTI_IRQ_HANDLER
788c9700
RK
438 help
439 Support for Freescale MXC/iMX-based family of processors
440
1d3f33d5
SG
441config ARCH_MXS
442 bool "Freescale MXS-based"
443 select GENERIC_CLOCKEVENTS
444 select ARCH_REQUIRE_GPIOLIB
b9214b97 445 select CLKDEV_LOOKUP
5c61ddcf 446 select CLKSRC_MMIO
1d3f33d5
SG
447 help
448 Support for Freescale MXS-based family of processors
449
4af6fee1
DS
450config ARCH_NETX
451 bool "Hilscher NetX based"
234b6ced 452 select CLKSRC_MMIO
c750815e 453 select CPU_ARM926T
4af6fee1 454 select ARM_VIC
2fcfe6b8 455 select GENERIC_CLOCKEVENTS
f999b8bd 456 help
4af6fee1
DS
457 This enables support for systems based on the Hilscher NetX Soc
458
459config ARCH_H720X
460 bool "Hynix HMS720x-based"
c750815e 461 select CPU_ARM720T
4af6fee1 462 select ISA_DMA_API
5cfc8ee0 463 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
464 help
465 This enables support for systems based on the Hynix HMS720x
466
3b938be6
RK
467config ARCH_IOP13XX
468 bool "IOP13xx-based"
469 depends on MMU
c750815e 470 select CPU_XSC3
3b938be6
RK
471 select PLAT_IOP
472 select PCI
473 select ARCH_SUPPORTS_MSI
8d5796d2 474 select VMSPLIT_1G
0cdc8b92 475 select NEED_MACH_MEMORY_H
3b938be6
RK
476 help
477 Support for Intel's IOP13XX (XScale) family of processors.
478
3f7e5815
LB
479config ARCH_IOP32X
480 bool "IOP32x-based"
a4f7e763 481 depends on MMU
c750815e 482 select CPU_XSCALE
7ae1f7ec 483 select PLAT_IOP
f7e68bbf 484 select PCI
bb2b180c 485 select ARCH_REQUIRE_GPIOLIB
f999b8bd 486 help
3f7e5815
LB
487 Support for Intel's 80219 and IOP32X (XScale) family of
488 processors.
489
490config ARCH_IOP33X
491 bool "IOP33x-based"
492 depends on MMU
c750815e 493 select CPU_XSCALE
7ae1f7ec 494 select PLAT_IOP
3f7e5815 495 select PCI
bb2b180c 496 select ARCH_REQUIRE_GPIOLIB
3f7e5815
LB
497 help
498 Support for Intel's IOP33X (XScale) family of processors.
1da177e4 499
3b938be6
RK
500config ARCH_IXP23XX
501 bool "IXP23XX-based"
a4f7e763 502 depends on MMU
c750815e 503 select CPU_XSC3
3b938be6 504 select PCI
5cfc8ee0 505 select ARCH_USES_GETTIMEOFFSET
0cdc8b92 506 select NEED_MACH_MEMORY_H
f999b8bd 507 help
3b938be6 508 Support for Intel's IXP23xx (XScale) family of processors.
1da177e4
LT
509
510config ARCH_IXP2000
511 bool "IXP2400/2800-based"
a4f7e763 512 depends on MMU
c750815e 513 select CPU_XSCALE
f7e68bbf 514 select PCI
5cfc8ee0 515 select ARCH_USES_GETTIMEOFFSET
0cdc8b92 516 select NEED_MACH_MEMORY_H
f999b8bd
MM
517 help
518 Support for Intel's IXP2400/2800 (XScale) family of processors.
1da177e4 519
3b938be6
RK
520config ARCH_IXP4XX
521 bool "IXP4xx-based"
a4f7e763 522 depends on MMU
234b6ced 523 select CLKSRC_MMIO
c750815e 524 select CPU_XSCALE
8858e9af 525 select GENERIC_GPIO
3b938be6 526 select GENERIC_CLOCKEVENTS
5b0d495c 527 select HAVE_SCHED_CLOCK
0b05da72 528 select MIGHT_HAVE_PCI
485bdde7 529 select DMABOUNCE if PCI
c4713074 530 help
3b938be6 531 Support for Intel's IXP4XX (XScale) family of processors.
c4713074 532
edabd38e
SB
533config ARCH_DOVE
534 bool "Marvell Dove"
7b769bb3 535 select CPU_V7
edabd38e 536 select PCI
edabd38e 537 select ARCH_REQUIRE_GPIOLIB
edabd38e
SB
538 select GENERIC_CLOCKEVENTS
539 select PLAT_ORION
540 help
541 Support for the Marvell Dove SoC 88AP510
542
651c74c7
SB
543config ARCH_KIRKWOOD
544 bool "Marvell Kirkwood"
c750815e 545 select CPU_FEROCEON
651c74c7 546 select PCI
a8865655 547 select ARCH_REQUIRE_GPIOLIB
651c74c7
SB
548 select GENERIC_CLOCKEVENTS
549 select PLAT_ORION
550 help
551 Support for the following Marvell Kirkwood series SoCs:
552 88F6180, 88F6192 and 88F6281.
553
40805949
KW
554config ARCH_LPC32XX
555 bool "NXP LPC32XX"
234b6ced 556 select CLKSRC_MMIO
40805949
KW
557 select CPU_ARM926T
558 select ARCH_REQUIRE_GPIOLIB
559 select HAVE_IDE
560 select ARM_AMBA
561 select USB_ARCH_HAS_OHCI
6d803ba7 562 select CLKDEV_LOOKUP
40805949
KW
563 select GENERIC_CLOCKEVENTS
564 help
565 Support for the NXP LPC32XX family of processors
566
794d15b2
SS
567config ARCH_MV78XX0
568 bool "Marvell MV78xx0"
c750815e 569 select CPU_FEROCEON
794d15b2 570 select PCI
a8865655 571 select ARCH_REQUIRE_GPIOLIB
794d15b2
SS
572 select GENERIC_CLOCKEVENTS
573 select PLAT_ORION
574 help
575 Support for the following Marvell MV78xx0 series SoCs:
576 MV781x0, MV782x0.
577
9dd0b194 578config ARCH_ORION5X
585cf175
TP
579 bool "Marvell Orion"
580 depends on MMU
c750815e 581 select CPU_FEROCEON
038ee083 582 select PCI
a8865655 583 select ARCH_REQUIRE_GPIOLIB
51cbff1d 584 select GENERIC_CLOCKEVENTS
69b02f6a 585 select PLAT_ORION
585cf175 586 help
9dd0b194 587 Support for the following Marvell Orion 5x series SoCs:
d2b2a6bb 588 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
d323ade1 589 Orion-2 (5281), Orion-1-90 (6183).
585cf175 590
788c9700 591config ARCH_MMP
2f7e8fae 592 bool "Marvell PXA168/910/MMP2"
788c9700 593 depends on MMU
788c9700 594 select ARCH_REQUIRE_GPIOLIB
6d803ba7 595 select CLKDEV_LOOKUP
788c9700 596 select GENERIC_CLOCKEVENTS
28bb7bc6 597 select HAVE_SCHED_CLOCK
788c9700
RK
598 select TICK_ONESHOT
599 select PLAT_PXA
0bd86961 600 select SPARSE_IRQ
3c7241bd 601 select GENERIC_ALLOCATOR
788c9700 602 help
2f7e8fae 603 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
788c9700
RK
604
605config ARCH_KS8695
606 bool "Micrel/Kendin KS8695"
607 select CPU_ARM922T
98830bc9 608 select ARCH_REQUIRE_GPIOLIB
5cfc8ee0 609 select ARCH_USES_GETTIMEOFFSET
0cdc8b92 610 select NEED_MACH_MEMORY_H
788c9700
RK
611 help
612 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
613 System-on-Chip devices.
614
788c9700
RK
615config ARCH_W90X900
616 bool "Nuvoton W90X900 CPU"
617 select CPU_ARM926T
c52d3d68 618 select ARCH_REQUIRE_GPIOLIB
6d803ba7 619 select CLKDEV_LOOKUP
6fa5d5f7 620 select CLKSRC_MMIO
58b5369e 621 select GENERIC_CLOCKEVENTS
788c9700 622 help
a8bc4ead 623 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
624 At present, the w90x900 has been renamed nuc900, regarding
625 the ARM series product line, you can login the following
626 link address to know more.
627
628 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
629 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
788c9700 630
c5f80065
EG
631config ARCH_TEGRA
632 bool "NVIDIA Tegra"
4073723a 633 select CLKDEV_LOOKUP
234b6ced 634 select CLKSRC_MMIO
c5f80065
EG
635 select GENERIC_CLOCKEVENTS
636 select GENERIC_GPIO
637 select HAVE_CLK
e3f4c0ab 638 select HAVE_SCHED_CLOCK
ce5ea9f3 639 select MIGHT_HAVE_CACHE_L2X0
7056d423 640 select ARCH_HAS_CPUFREQ
c5f80065
EG
641 help
642 This enables support for NVIDIA Tegra based systems (Tegra APX,
643 Tegra 6xx and Tegra 2 series).
644
af75655c
JI
645config ARCH_PICOXCELL
646 bool "Picochip picoXcell"
647 select ARCH_REQUIRE_GPIOLIB
648 select ARM_PATCH_PHYS_VIRT
649 select ARM_VIC
650 select CPU_V6K
651 select DW_APB_TIMER
652 select GENERIC_CLOCKEVENTS
653 select GENERIC_GPIO
654 select HAVE_SCHED_CLOCK
655 select HAVE_TCM
656 select NO_IOPORT
657 select USE_OF
658 help
659 This enables support for systems based on the Picochip picoXcell
660 family of Femtocell devices. The picoxcell support requires device tree
661 for all boards.
662
4af6fee1
DS
663config ARCH_PNX4008
664 bool "Philips Nexperia PNX4008 Mobile"
c750815e 665 select CPU_ARM926T
6d803ba7 666 select CLKDEV_LOOKUP
5cfc8ee0 667 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
668 help
669 This enables support for Philips PNX4008 mobile platform.
670
1da177e4 671config ARCH_PXA
2c8086a5 672 bool "PXA2xx/PXA3xx-based"
a4f7e763 673 depends on MMU
034d2f5a 674 select ARCH_MTD_XIP
89c52ed4 675 select ARCH_HAS_CPUFREQ
6d803ba7 676 select CLKDEV_LOOKUP
234b6ced 677 select CLKSRC_MMIO
7444a72e 678 select ARCH_REQUIRE_GPIOLIB
981d0f39 679 select GENERIC_CLOCKEVENTS
7ce83018 680 select HAVE_SCHED_CLOCK
a88264c2 681 select TICK_ONESHOT
bd5ce433 682 select PLAT_PXA
6ac6b817 683 select SPARSE_IRQ
4e234cc0 684 select AUTO_ZRELADDR
8a97ae2f 685 select MULTI_IRQ_HANDLER
15e0d9e3 686 select ARM_CPU_SUSPEND if PM
d0ee9f40 687 select HAVE_IDE
f999b8bd 688 help
2c8086a5 689 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
1da177e4 690
788c9700
RK
691config ARCH_MSM
692 bool "Qualcomm MSM"
4b536b8d 693 select HAVE_CLK
49cbe786 694 select GENERIC_CLOCKEVENTS
923a081c 695 select ARCH_REQUIRE_GPIOLIB
bd32344a 696 select CLKDEV_LOOKUP
49cbe786 697 help
4b53eb4f
DW
698 Support for Qualcomm MSM/QSD based systems. This runs on the
699 apps processor of the MSM/QSD and depends on a shared memory
700 interface to the modem processor which runs the baseband
701 stack and controls some vital subsystems
702 (clock and power control, etc).
49cbe786 703
c793c1b0 704config ARCH_SHMOBILE
6d72ad35
PM
705 bool "Renesas SH-Mobile / R-Mobile"
706 select HAVE_CLK
5e93c6b4 707 select CLKDEV_LOOKUP
aa3831cf 708 select HAVE_MACH_CLKDEV
6d72ad35 709 select GENERIC_CLOCKEVENTS
ce5ea9f3 710 select MIGHT_HAVE_CACHE_L2X0
6d72ad35
PM
711 select NO_IOPORT
712 select SPARSE_IRQ
60f1435c 713 select MULTI_IRQ_HANDLER
e3e01091 714 select PM_GENERIC_DOMAINS if PM
0cdc8b92 715 select NEED_MACH_MEMORY_H
c793c1b0 716 help
6d72ad35 717 Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
c793c1b0 718
1da177e4
LT
719config ARCH_RPC
720 bool "RiscPC"
721 select ARCH_ACORN
722 select FIQ
723 select TIMER_ACORN
a08b6b79 724 select ARCH_MAY_HAVE_PC_FDC
341eb781 725 select HAVE_PATA_PLATFORM
065909b9 726 select ISA_DMA_API
5ea81769 727 select NO_IOPORT
07f841b7 728 select ARCH_SPARSEMEM_ENABLE
5cfc8ee0 729 select ARCH_USES_GETTIMEOFFSET
d0ee9f40 730 select HAVE_IDE
0cdc8b92 731 select NEED_MACH_MEMORY_H
1da177e4
LT
732 help
733 On the Acorn Risc-PC, Linux can support the internal IDE disk and
734 CD-ROM interface, serial and parallel port, and the floppy drive.
735
736config ARCH_SA1100
737 bool "SA1100-based"
234b6ced 738 select CLKSRC_MMIO
c750815e 739 select CPU_SA1100
f7e68bbf 740 select ISA
05944d74 741 select ARCH_SPARSEMEM_ENABLE
034d2f5a 742 select ARCH_MTD_XIP
89c52ed4 743 select ARCH_HAS_CPUFREQ
1937f5b9 744 select CPU_FREQ
3e238be2 745 select GENERIC_CLOCKEVENTS
9483a578 746 select HAVE_CLK
5094b92f 747 select HAVE_SCHED_CLOCK
3e238be2 748 select TICK_ONESHOT
7444a72e 749 select ARCH_REQUIRE_GPIOLIB
d0ee9f40 750 select HAVE_IDE
0cdc8b92 751 select NEED_MACH_MEMORY_H
f999b8bd
MM
752 help
753 Support for StrongARM 11x0 based boards.
1da177e4
LT
754
755config ARCH_S3C2410
63b1f51b 756 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
0a938b97 757 select GENERIC_GPIO
9d56c02a 758 select ARCH_HAS_CPUFREQ
9483a578 759 select HAVE_CLK
e83626f2 760 select CLKDEV_LOOKUP
5cfc8ee0 761 select ARCH_USES_GETTIMEOFFSET
20676c15 762 select HAVE_S3C2410_I2C if I2C
1da177e4
LT
763 help
764 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
765 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
f6c8965a 766 the Samsung SMDK2410 development board (and derivatives).
1da177e4 767
63b1f51b 768 Note, the S3C2416 and the S3C2450 are so close that they even share
25985edc 769 the same SoC ID code. This means that there is no separate machine
63b1f51b
BD
770 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
771
a08ab637
BD
772config ARCH_S3C64XX
773 bool "Samsung S3C64XX"
89f1fa08 774 select PLAT_SAMSUNG
89f0ce72 775 select CPU_V6
89f0ce72 776 select ARM_VIC
a08ab637 777 select HAVE_CLK
6700397a 778 select HAVE_TCM
226e85f4 779 select CLKDEV_LOOKUP
89f0ce72 780 select NO_IOPORT
5cfc8ee0 781 select ARCH_USES_GETTIMEOFFSET
89c52ed4 782 select ARCH_HAS_CPUFREQ
89f0ce72
BD
783 select ARCH_REQUIRE_GPIOLIB
784 select SAMSUNG_CLKSRC
785 select SAMSUNG_IRQ_VIC_TIMER
89f0ce72 786 select S3C_GPIO_TRACK
89f0ce72
BD
787 select S3C_DEV_NAND
788 select USB_ARCH_HAS_OHCI
789 select SAMSUNG_GPIOLIB_4BIT
20676c15 790 select HAVE_S3C2410_I2C if I2C
c39d8d55 791 select HAVE_S3C2410_WATCHDOG if WATCHDOG
a08ab637
BD
792 help
793 Samsung S3C64XX series based systems
794
49b7a491
KK
795config ARCH_S5P64X0
796 bool "Samsung S5P6440 S5P6450"
c4ffccdd
KK
797 select CPU_V6
798 select GENERIC_GPIO
799 select HAVE_CLK
d8b22d25 800 select CLKDEV_LOOKUP
0665ccc4 801 select CLKSRC_MMIO
c39d8d55 802 select HAVE_S3C2410_WATCHDOG if WATCHDOG
9e65bbf2
SK
803 select GENERIC_CLOCKEVENTS
804 select HAVE_SCHED_CLOCK
20676c15 805 select HAVE_S3C2410_I2C if I2C
754961a8 806 select HAVE_S3C_RTC if RTC_CLASS
c4ffccdd 807 help
49b7a491
KK
808 Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
809 SMDK6450.
c4ffccdd 810
acc84707
MS
811config ARCH_S5PC100
812 bool "Samsung S5PC100"
5a7652f2
BM
813 select GENERIC_GPIO
814 select HAVE_CLK
29e8eb0f 815 select CLKDEV_LOOKUP
5a7652f2 816 select CPU_V7
d6d502fa 817 select ARM_L1_CACHE_SHIFT_6
925c68cd 818 select ARCH_USES_GETTIMEOFFSET
20676c15 819 select HAVE_S3C2410_I2C if I2C
754961a8 820 select HAVE_S3C_RTC if RTC_CLASS
c39d8d55 821 select HAVE_S3C2410_WATCHDOG if WATCHDOG
5a7652f2 822 help
acc84707 823 Samsung S5PC100 series based systems
5a7652f2 824
170f4e42
KK
825config ARCH_S5PV210
826 bool "Samsung S5PV210/S5PC110"
827 select CPU_V7
eecb6a84 828 select ARCH_SPARSEMEM_ENABLE
0f75a96b 829 select ARCH_HAS_HOLES_MEMORYMODEL
170f4e42
KK
830 select GENERIC_GPIO
831 select HAVE_CLK
b2a9dd46 832 select CLKDEV_LOOKUP
0665ccc4 833 select CLKSRC_MMIO
170f4e42 834 select ARM_L1_CACHE_SHIFT_6
d8144aea 835 select ARCH_HAS_CPUFREQ
9e65bbf2
SK
836 select GENERIC_CLOCKEVENTS
837 select HAVE_SCHED_CLOCK
20676c15 838 select HAVE_S3C2410_I2C if I2C
754961a8 839 select HAVE_S3C_RTC if RTC_CLASS
c39d8d55 840 select HAVE_S3C2410_WATCHDOG if WATCHDOG
0cdc8b92 841 select NEED_MACH_MEMORY_H
170f4e42
KK
842 help
843 Samsung S5PV210/S5PC110 series based systems
844
83014579
KK
845config ARCH_EXYNOS
846 bool "SAMSUNG EXYNOS"
cc0e72b8 847 select CPU_V7
f567fa6f 848 select ARCH_SPARSEMEM_ENABLE
0f75a96b 849 select ARCH_HAS_HOLES_MEMORYMODEL
cc0e72b8
CY
850 select GENERIC_GPIO
851 select HAVE_CLK
badc4f2d 852 select CLKDEV_LOOKUP
b333fb16 853 select ARCH_HAS_CPUFREQ
cc0e72b8 854 select GENERIC_CLOCKEVENTS
754961a8 855 select HAVE_S3C_RTC if RTC_CLASS
20676c15 856 select HAVE_S3C2410_I2C if I2C
c39d8d55 857 select HAVE_S3C2410_WATCHDOG if WATCHDOG
0cdc8b92 858 select NEED_MACH_MEMORY_H
cc0e72b8 859 help
83014579 860 Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5)
cc0e72b8 861
1da177e4
LT
862config ARCH_SHARK
863 bool "Shark"
c750815e 864 select CPU_SA110
f7e68bbf
RK
865 select ISA
866 select ISA_DMA
3bca103a 867 select ZONE_DMA
f7e68bbf 868 select PCI
5cfc8ee0 869 select ARCH_USES_GETTIMEOFFSET
0cdc8b92 870 select NEED_MACH_MEMORY_H
f999b8bd
MM
871 help
872 Support for the StrongARM based Digital DNARD machine, also known
873 as "Shark" (<http://www.shark-linux.de/shark.html>).
1da177e4 874
83ef3338
HK
875config ARCH_TCC_926
876 bool "Telechips TCC ARM926-based systems"
234b6ced 877 select CLKSRC_MMIO
83ef3338
HK
878 select CPU_ARM926T
879 select HAVE_CLK
6d803ba7 880 select CLKDEV_LOOKUP
83ef3338
HK
881 select GENERIC_CLOCKEVENTS
882 help
883 Support for Telechips TCC ARM926-based systems.
884
d98aac75
LW
885config ARCH_U300
886 bool "ST-Ericsson U300 Series"
887 depends on MMU
234b6ced 888 select CLKSRC_MMIO
d98aac75 889 select CPU_ARM926T
5c21b7ca 890 select HAVE_SCHED_CLOCK
bc581770 891 select HAVE_TCM
d98aac75 892 select ARM_AMBA
5485c1e0 893 select ARM_PATCH_PHYS_VIRT
d98aac75 894 select ARM_VIC
d98aac75 895 select GENERIC_CLOCKEVENTS
6d803ba7 896 select CLKDEV_LOOKUP
aa3831cf 897 select HAVE_MACH_CLKDEV
d98aac75 898 select GENERIC_GPIO
cc890cd7 899 select ARCH_REQUIRE_GPIOLIB
0cdc8b92 900 select NEED_MACH_MEMORY_H
d98aac75
LW
901 help
902 Support for ST-Ericsson U300 series mobile platforms.
903
ccf50e23
RK
904config ARCH_U8500
905 bool "ST-Ericsson U8500 Series"
906 select CPU_V7
907 select ARM_AMBA
ccf50e23 908 select GENERIC_CLOCKEVENTS
6d803ba7 909 select CLKDEV_LOOKUP
94bdc0e2 910 select ARCH_REQUIRE_GPIOLIB
7c1a70e9 911 select ARCH_HAS_CPUFREQ
ce5ea9f3 912 select MIGHT_HAVE_CACHE_L2X0
ccf50e23
RK
913 help
914 Support for ST-Ericsson's Ux500 architecture
915
916config ARCH_NOMADIK
917 bool "STMicroelectronics Nomadik"
918 select ARM_AMBA
919 select ARM_VIC
920 select CPU_ARM926T
6d803ba7 921 select CLKDEV_LOOKUP
ccf50e23 922 select GENERIC_CLOCKEVENTS
ce5ea9f3 923 select MIGHT_HAVE_CACHE_L2X0
ccf50e23
RK
924 select ARCH_REQUIRE_GPIOLIB
925 help
926 Support for the Nomadik platform by ST-Ericsson
927
7c6337e2
KH
928config ARCH_DAVINCI
929 bool "TI DaVinci"
7c6337e2 930 select GENERIC_CLOCKEVENTS
dce1115b 931 select ARCH_REQUIRE_GPIOLIB
3bca103a 932 select ZONE_DMA
9232fcc9 933 select HAVE_IDE
6d803ba7 934 select CLKDEV_LOOKUP
20e9969b 935 select GENERIC_ALLOCATOR
dc7ad3b3 936 select GENERIC_IRQ_CHIP
ae88e05a 937 select ARCH_HAS_HOLES_MEMORYMODEL
7c6337e2
KH
938 help
939 Support for TI's DaVinci platform.
940
3b938be6
RK
941config ARCH_OMAP
942 bool "TI OMAP"
9483a578 943 select HAVE_CLK
7444a72e 944 select ARCH_REQUIRE_GPIOLIB
89c52ed4 945 select ARCH_HAS_CPUFREQ
354a183f 946 select CLKSRC_MMIO
06cad098 947 select GENERIC_CLOCKEVENTS
dc548fbb 948 select HAVE_SCHED_CLOCK
9af915da 949 select ARCH_HAS_HOLES_MEMORYMODEL
3b938be6 950 help
6e457bb0 951 Support for TI's OMAP platform (OMAP1/2/3/4).
3b938be6 952
cee37e50 953config PLAT_SPEAR
954 bool "ST SPEAr"
955 select ARM_AMBA
956 select ARCH_REQUIRE_GPIOLIB
6d803ba7 957 select CLKDEV_LOOKUP
d6e15d78 958 select CLKSRC_MMIO
cee37e50 959 select GENERIC_CLOCKEVENTS
cee37e50 960 select HAVE_CLK
961 help
962 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
963
21f47fbc
AC
964config ARCH_VT8500
965 bool "VIA/WonderMedia 85xx"
966 select CPU_ARM926T
967 select GENERIC_GPIO
968 select ARCH_HAS_CPUFREQ
969 select GENERIC_CLOCKEVENTS
970 select ARCH_REQUIRE_GPIOLIB
971 select HAVE_PWM
972 help
973 Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
02c981c0 974
b85a3ef4
JL
975config ARCH_ZYNQ
976 bool "Xilinx Zynq ARM Cortex A9 Platform"
02c981c0 977 select CPU_V7
02c981c0
BD
978 select GENERIC_CLOCKEVENTS
979 select CLKDEV_LOOKUP
b85a3ef4
JL
980 select ARM_GIC
981 select ARM_AMBA
982 select ICST
ce5ea9f3 983 select MIGHT_HAVE_CACHE_L2X0
02c981c0 984 select USE_OF
02c981c0 985 help
b85a3ef4 986 Support for Xilinx Zynq ARM Cortex A9 Platform
1da177e4
LT
987endchoice
988
ccf50e23
RK
989#
990# This is sorted alphabetically by mach-* pathname. However, plat-*
991# Kconfigs may be included either alphabetically (according to the
992# plat- suffix) or along side the corresponding mach-* source.
993#
95b8f20f
RK
994source "arch/arm/mach-at91/Kconfig"
995
996source "arch/arm/mach-bcmring/Kconfig"
997
1da177e4
LT
998source "arch/arm/mach-clps711x/Kconfig"
999
d94f944e
AV
1000source "arch/arm/mach-cns3xxx/Kconfig"
1001
95b8f20f
RK
1002source "arch/arm/mach-davinci/Kconfig"
1003
1004source "arch/arm/mach-dove/Kconfig"
1005
e7736d47
LB
1006source "arch/arm/mach-ep93xx/Kconfig"
1007
1da177e4
LT
1008source "arch/arm/mach-footbridge/Kconfig"
1009
59d3a193
PZ
1010source "arch/arm/mach-gemini/Kconfig"
1011
95b8f20f
RK
1012source "arch/arm/mach-h720x/Kconfig"
1013
1da177e4
LT
1014source "arch/arm/mach-integrator/Kconfig"
1015
3f7e5815
LB
1016source "arch/arm/mach-iop32x/Kconfig"
1017
1018source "arch/arm/mach-iop33x/Kconfig"
1da177e4 1019
285f5fa7
DW
1020source "arch/arm/mach-iop13xx/Kconfig"
1021
1da177e4
LT
1022source "arch/arm/mach-ixp4xx/Kconfig"
1023
1024source "arch/arm/mach-ixp2000/Kconfig"
1025
c4713074
LB
1026source "arch/arm/mach-ixp23xx/Kconfig"
1027
95b8f20f
RK
1028source "arch/arm/mach-kirkwood/Kconfig"
1029
1030source "arch/arm/mach-ks8695/Kconfig"
1031
40805949
KW
1032source "arch/arm/mach-lpc32xx/Kconfig"
1033
95b8f20f
RK
1034source "arch/arm/mach-msm/Kconfig"
1035
794d15b2
SS
1036source "arch/arm/mach-mv78xx0/Kconfig"
1037
95b8f20f 1038source "arch/arm/plat-mxc/Kconfig"
1da177e4 1039
1d3f33d5
SG
1040source "arch/arm/mach-mxs/Kconfig"
1041
95b8f20f 1042source "arch/arm/mach-netx/Kconfig"
49cbe786 1043
95b8f20f
RK
1044source "arch/arm/mach-nomadik/Kconfig"
1045source "arch/arm/plat-nomadik/Kconfig"
1046
d48af15e
TL
1047source "arch/arm/plat-omap/Kconfig"
1048
1049source "arch/arm/mach-omap1/Kconfig"
1da177e4 1050
1dbae815
TL
1051source "arch/arm/mach-omap2/Kconfig"
1052
9dd0b194 1053source "arch/arm/mach-orion5x/Kconfig"
585cf175 1054
95b8f20f
RK
1055source "arch/arm/mach-pxa/Kconfig"
1056source "arch/arm/plat-pxa/Kconfig"
585cf175 1057
95b8f20f
RK
1058source "arch/arm/mach-mmp/Kconfig"
1059
1060source "arch/arm/mach-realview/Kconfig"
1061
1062source "arch/arm/mach-sa1100/Kconfig"
edabd38e 1063
cf383678 1064source "arch/arm/plat-samsung/Kconfig"
a21765a7 1065source "arch/arm/plat-s3c24xx/Kconfig"
c4ffccdd 1066source "arch/arm/plat-s5p/Kconfig"
a21765a7 1067
cee37e50 1068source "arch/arm/plat-spear/Kconfig"
a21765a7 1069
83ef3338
HK
1070source "arch/arm/plat-tcc/Kconfig"
1071
a21765a7 1072if ARCH_S3C2410
1da177e4 1073source "arch/arm/mach-s3c2410/Kconfig"
a21765a7 1074source "arch/arm/mach-s3c2412/Kconfig"
f1290a49 1075source "arch/arm/mach-s3c2416/Kconfig"
a21765a7 1076source "arch/arm/mach-s3c2440/Kconfig"
e4d06e39 1077source "arch/arm/mach-s3c2443/Kconfig"
a21765a7 1078endif
1da177e4 1079
a08ab637 1080if ARCH_S3C64XX
431107ea 1081source "arch/arm/mach-s3c64xx/Kconfig"
a08ab637
BD
1082endif
1083
49b7a491 1084source "arch/arm/mach-s5p64x0/Kconfig"
c4ffccdd 1085
5a7652f2 1086source "arch/arm/mach-s5pc100/Kconfig"
5a7652f2 1087
170f4e42
KK
1088source "arch/arm/mach-s5pv210/Kconfig"
1089
83014579 1090source "arch/arm/mach-exynos/Kconfig"
cc0e72b8 1091
882d01f9 1092source "arch/arm/mach-shmobile/Kconfig"
52c543f9 1093
c5f80065
EG
1094source "arch/arm/mach-tegra/Kconfig"
1095
95b8f20f 1096source "arch/arm/mach-u300/Kconfig"
1da177e4 1097
95b8f20f 1098source "arch/arm/mach-ux500/Kconfig"
1da177e4
LT
1099
1100source "arch/arm/mach-versatile/Kconfig"
1101
ceade897 1102source "arch/arm/mach-vexpress/Kconfig"
420c34e4 1103source "arch/arm/plat-versatile/Kconfig"
ceade897 1104
21f47fbc
AC
1105source "arch/arm/mach-vt8500/Kconfig"
1106
7ec80ddf 1107source "arch/arm/mach-w90x900/Kconfig"
1108
1da177e4
LT
1109# Definitions to make life easier
1110config ARCH_ACORN
1111 bool
1112
7ae1f7ec
LB
1113config PLAT_IOP
1114 bool
469d3044 1115 select GENERIC_CLOCKEVENTS
08f26b1e 1116 select HAVE_SCHED_CLOCK
7ae1f7ec 1117
69b02f6a
LB
1118config PLAT_ORION
1119 bool
bfe45e0b 1120 select CLKSRC_MMIO
dc7ad3b3 1121 select GENERIC_IRQ_CHIP
f06a1624 1122 select HAVE_SCHED_CLOCK
69b02f6a 1123
bd5ce433
EM
1124config PLAT_PXA
1125 bool
1126
f4b8b319
RK
1127config PLAT_VERSATILE
1128 bool
1129
e3887714
RK
1130config ARM_TIMER_SP804
1131 bool
bfe45e0b 1132 select CLKSRC_MMIO
e3887714 1133
1da177e4
LT
1134source arch/arm/mm/Kconfig
1135
afe4b25e
LB
1136config IWMMXT
1137 bool "Enable iWMMXt support"
ef6c8445
HZ
1138 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
1139 default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
afe4b25e
LB
1140 help
1141 Enable support for iWMMXt context switching at run time if
1142 running on a CPU that supports it.
1143
1da177e4
LT
1144# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
1145config XSCALE_PMU
1146 bool
1147 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
1148 default y
1149
0f4f0672 1150config CPU_HAS_PMU
e399b1a4 1151 depends on (CPU_V6 || CPU_V6K || CPU_V7 || XSCALE_PMU) && \
8954bb0d 1152 (!ARCH_OMAP3 || OMAP3_EMU)
0f4f0672
JI
1153 default y
1154 bool
1155
52108641 1156config MULTI_IRQ_HANDLER
1157 bool
1158 help
1159 Allow each machine to specify it's own IRQ handler at run time.
1160
3b93e7b0
HC
1161if !MMU
1162source "arch/arm/Kconfig-nommu"
1163endif
1164
9cba3ccc
CM
1165config ARM_ERRATA_411920
1166 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
e399b1a4 1167 depends on CPU_V6 || CPU_V6K
9cba3ccc
CM
1168 help
1169 Invalidation of the Instruction Cache operation can
1170 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1171 It does not affect the MPCore. This option enables the ARM Ltd.
1172 recommended workaround.
1173
7ce236fc
CM
1174config ARM_ERRATA_430973
1175 bool "ARM errata: Stale prediction on replaced interworking branch"
1176 depends on CPU_V7
1177 help
1178 This option enables the workaround for the 430973 Cortex-A8
1179 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1180 interworking branch is replaced with another code sequence at the
1181 same virtual address, whether due to self-modifying code or virtual
1182 to physical address re-mapping, Cortex-A8 does not recover from the
1183 stale interworking branch prediction. This results in Cortex-A8
1184 executing the new code sequence in the incorrect ARM or Thumb state.
1185 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1186 and also flushes the branch target cache at every context switch.
1187 Note that setting specific bits in the ACTLR register may not be
1188 available in non-secure mode.
1189
855c551f
CM
1190config ARM_ERRATA_458693
1191 bool "ARM errata: Processor deadlock when a false hazard is created"
1192 depends on CPU_V7
1193 help
1194 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1195 erratum. For very specific sequences of memory operations, it is
1196 possible for a hazard condition intended for a cache line to instead
1197 be incorrectly associated with a different cache line. This false
1198 hazard might then cause a processor deadlock. The workaround enables
1199 the L1 caching of the NEON accesses and disables the PLD instruction
1200 in the ACTLR register. Note that setting specific bits in the ACTLR
1201 register may not be available in non-secure mode.
1202
0516e464
CM
1203config ARM_ERRATA_460075
1204 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1205 depends on CPU_V7
1206 help
1207 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1208 erratum. Any asynchronous access to the L2 cache may encounter a
1209 situation in which recent store transactions to the L2 cache are lost
1210 and overwritten with stale memory contents from external memory. The
1211 workaround disables the write-allocate mode for the L2 cache via the
1212 ACTLR register. Note that setting specific bits in the ACTLR register
1213 may not be available in non-secure mode.
1214
9f05027c
WD
1215config ARM_ERRATA_742230
1216 bool "ARM errata: DMB operation may be faulty"
1217 depends on CPU_V7 && SMP
1218 help
1219 This option enables the workaround for the 742230 Cortex-A9
1220 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1221 between two write operations may not ensure the correct visibility
1222 ordering of the two writes. This workaround sets a specific bit in
1223 the diagnostic register of the Cortex-A9 which causes the DMB
1224 instruction to behave as a DSB, ensuring the correct behaviour of
1225 the two writes.
1226
a672e99b
WD
1227config ARM_ERRATA_742231
1228 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1229 depends on CPU_V7 && SMP
1230 help
1231 This option enables the workaround for the 742231 Cortex-A9
1232 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1233 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1234 accessing some data located in the same cache line, may get corrupted
1235 data due to bad handling of the address hazard when the line gets
1236 replaced from one of the CPUs at the same time as another CPU is
1237 accessing it. This workaround sets specific bits in the diagnostic
1238 register of the Cortex-A9 which reduces the linefill issuing
1239 capabilities of the processor.
1240
9e65582a
SS
1241config PL310_ERRATA_588369
1242 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
2839e06c 1243 depends on CACHE_L2X0
9e65582a
SS
1244 help
1245 The PL310 L2 cache controller implements three types of Clean &
1246 Invalidate maintenance operations: by Physical Address
1247 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1248 They are architecturally defined to behave as the execution of a
1249 clean operation followed immediately by an invalidate operation,
1250 both performing to the same memory location. This functionality
1251 is not correctly implemented in PL310 as clean lines are not
2839e06c 1252 invalidated as a result of these operations.
cdf357f1
WD
1253
1254config ARM_ERRATA_720789
1255 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1256 depends on CPU_V7 && SMP
1257 help
1258 This option enables the workaround for the 720789 Cortex-A9 (prior to
1259 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1260 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1261 As a consequence of this erratum, some TLB entries which should be
1262 invalidated are not, resulting in an incoherency in the system page
1263 tables. The workaround changes the TLB flushing routines to invalidate
1264 entries regardless of the ASID.
475d92fc 1265
1f0090a1
RK
1266config PL310_ERRATA_727915
1267 bool "Background Clean & Invalidate by Way operation can cause data corruption"
1268 depends on CACHE_L2X0
1269 help
1270 PL310 implements the Clean & Invalidate by Way L2 cache maintenance
1271 operation (offset 0x7FC). This operation runs in background so that
1272 PL310 can handle normal accesses while it is in progress. Under very
1273 rare circumstances, due to this erratum, write data can be lost when
1274 PL310 treats a cacheable write transaction during a Clean &
1275 Invalidate by Way operation.
1276
475d92fc
WD
1277config ARM_ERRATA_743622
1278 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1279 depends on CPU_V7
1280 help
1281 This option enables the workaround for the 743622 Cortex-A9
1282 (r2p0..r2p2) erratum. Under very rare conditions, a faulty
1283 optimisation in the Cortex-A9 Store Buffer may lead to data
1284 corruption. This workaround sets a specific bit in the diagnostic
1285 register of the Cortex-A9 which disables the Store Buffer
1286 optimisation, preventing the defect from occurring. This has no
1287 visible impact on the overall performance or power consumption of the
1288 processor.
1289
9a27c27c
WD
1290config ARM_ERRATA_751472
1291 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
1292 depends on CPU_V7 && SMP
1293 help
1294 This option enables the workaround for the 751472 Cortex-A9 (prior
1295 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1296 completion of a following broadcasted operation if the second
1297 operation is received by a CPU before the ICIALLUIS has completed,
1298 potentially leading to corrupted entries in the cache or TLB.
1299
885028e4
SK
1300config ARM_ERRATA_753970
1301 bool "ARM errata: cache sync operation may be faulty"
1302 depends on CACHE_PL310
1303 help
1304 This option enables the workaround for the 753970 PL310 (r3p0) erratum.
1305
1306 Under some condition the effect of cache sync operation on
1307 the store buffer still remains when the operation completes.
1308 This means that the store buffer is always asked to drain and
1309 this prevents it from merging any further writes. The workaround
1310 is to replace the normal offset of cache sync operation (0x730)
1311 by another offset targeting an unmapped PL310 register 0x740.
1312 This has the same effect as the cache sync operation: store buffer
1313 drain and waiting for all buffers empty.
1314
fcbdc5fe
WD
1315config ARM_ERRATA_754322
1316 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1317 depends on CPU_V7
1318 help
1319 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1320 r3p*) erratum. A speculative memory access may cause a page table walk
1321 which starts prior to an ASID switch but completes afterwards. This
1322 can populate the micro-TLB with a stale entry which may be hit with
1323 the new ASID. This workaround places two dsb instructions in the mm
1324 switching code so that no page table walks can cross the ASID switch.
1325
5dab26af
WD
1326config ARM_ERRATA_754327
1327 bool "ARM errata: no automatic Store Buffer drain"
1328 depends on CPU_V7 && SMP
1329 help
1330 This option enables the workaround for the 754327 Cortex-A9 (prior to
1331 r2p0) erratum. The Store Buffer does not have any automatic draining
1332 mechanism and therefore a livelock may occur if an external agent
1333 continuously polls a memory location waiting to observe an update.
1334 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1335 written polling loops from denying visibility of updates to memory.
1336
145e10e1
CM
1337config ARM_ERRATA_364296
1338 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
1339 depends on CPU_V6 && !SMP
1340 help
1341 This options enables the workaround for the 364296 ARM1136
1342 r0p2 erratum (possible cache data corruption with
1343 hit-under-miss enabled). It sets the undocumented bit 31 in
1344 the auxiliary control register and the FI bit in the control
1345 register, thus disabling hit-under-miss without putting the
1346 processor into full low interrupt latency mode. ARM11MPCore
1347 is not affected.
1348
f630c1bd
WD
1349config ARM_ERRATA_764369
1350 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1351 depends on CPU_V7 && SMP
1352 help
1353 This option enables the workaround for erratum 764369
1354 affecting Cortex-A9 MPCore with two or more processors (all
1355 current revisions). Under certain timing circumstances, a data
1356 cache line maintenance operation by MVA targeting an Inner
1357 Shareable memory region may fail to proceed up to either the
1358 Point of Coherency or to the Point of Unification of the
1359 system. This workaround adds a DSB instruction before the
1360 relevant cache maintenance functions and sets a specific bit
1361 in the diagnostic control register of the SCU.
1362
1da177e4
LT
1363endmenu
1364
1365source "arch/arm/common/Kconfig"
1366
1da177e4
LT
1367menu "Bus support"
1368
1369config ARM_AMBA
1370 bool
1371
1372config ISA
1373 bool
1da177e4
LT
1374 help
1375 Find out whether you have ISA slots on your motherboard. ISA is the
1376 name of a bus system, i.e. the way the CPU talks to the other stuff
1377 inside your box. Other bus systems are PCI, EISA, MicroChannel
1378 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1379 newer boards don't support it. If you have ISA, say Y, otherwise N.
1380
065909b9 1381# Select ISA DMA controller support
1da177e4
LT
1382config ISA_DMA
1383 bool
065909b9 1384 select ISA_DMA_API
1da177e4 1385
065909b9 1386# Select ISA DMA interface
5cae841b
AV
1387config ISA_DMA_API
1388 bool
5cae841b 1389
1da177e4 1390config PCI
0b05da72 1391 bool "PCI support" if MIGHT_HAVE_PCI
1da177e4
LT
1392 help
1393 Find out whether you have a PCI motherboard. PCI is the name of a
1394 bus system, i.e. the way the CPU talks to the other stuff inside
1395 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1396 VESA. If you have PCI, say Y, otherwise N.
1397
52882173
AV
1398config PCI_DOMAINS
1399 bool
1400 depends on PCI
1401
b080ac8a
MRJ
1402config PCI_NANOENGINE
1403 bool "BSE nanoEngine PCI support"
1404 depends on SA1100_NANOENGINE
1405 help
1406 Enable PCI on the BSE nanoEngine board.
1407
36e23590
MW
1408config PCI_SYSCALL
1409 def_bool PCI
1410
1da177e4
LT
1411# Select the host bridge type
1412config PCI_HOST_VIA82C505
1413 bool
1414 depends on PCI && ARCH_SHARK
1415 default y
1416
a0113a99
MR
1417config PCI_HOST_ITE8152
1418 bool
1419 depends on PCI && MACH_ARMCORE
1420 default y
1421 select DMABOUNCE
1422
1da177e4
LT
1423source "drivers/pci/Kconfig"
1424
1425source "drivers/pcmcia/Kconfig"
1426
1427endmenu
1428
1429menu "Kernel Features"
1430
0567a0c0
KH
1431source "kernel/time/Kconfig"
1432
1da177e4 1433config SMP
bb2d8130 1434 bool "Symmetric Multi-Processing"
fbb4ddac 1435 depends on CPU_V6K || CPU_V7
bc28248e 1436 depends on GENERIC_CLOCKEVENTS
971acb9b 1437 depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
89c3dedf 1438 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
10606aad 1439 ARCH_EXYNOS4 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
abc3f126 1440 ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE || ARCH_HIGHBANK || SOC_IMX6Q
9934ebb8 1441 depends on MMU
f6dd9fa5 1442 select USE_GENERIC_SMP_HELPERS
89c3dedf 1443 select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
1da177e4
LT
1444 help
1445 This enables support for systems with more than one CPU. If you have
1446 a system with only one CPU, like most personal computers, say N. If
1447 you have a system with more than one CPU, say Y.
1448
1449 If you say N here, the kernel will run on single and multiprocessor
1450 machines, but will use only one CPU of a multiprocessor machine. If
1451 you say Y here, the kernel will run on many, but not all, single
1452 processor machines. On a single processor machine, the kernel will
1453 run faster if you say N here.
1454
395cf969 1455 See also <file:Documentation/x86/i386/IO-APIC.txt>,
1da177e4 1456 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
50a23e6e 1457 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
1da177e4
LT
1458
1459 If you don't know what to do here, say N.
1460
f00ec48f
RK
1461config SMP_ON_UP
1462 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
1463 depends on EXPERIMENTAL
4d2692a7 1464 depends on SMP && !XIP_KERNEL
f00ec48f
RK
1465 default y
1466 help
1467 SMP kernels contain instructions which fail on non-SMP processors.
1468 Enabling this option allows the kernel to modify itself to make
1469 these instructions safe. Disabling it allows about 1K of space
1470 savings.
1471
1472 If you don't know what to do here, say Y.
1473
c9018aab
VG
1474config ARM_CPU_TOPOLOGY
1475 bool "Support cpu topology definition"
1476 depends on SMP && CPU_V7
1477 default y
1478 help
1479 Support ARM cpu topology definition. The MPIDR register defines
1480 affinity between processors which is then used to describe the cpu
1481 topology of an ARM System.
1482
1483config SCHED_MC
1484 bool "Multi-core scheduler support"
1485 depends on ARM_CPU_TOPOLOGY
1486 help
1487 Multi-core scheduler support improves the CPU scheduler's decision
1488 making when dealing with multi-core CPU chips at a cost of slightly
1489 increased overhead in some places. If unsure say N here.
1490
1491config SCHED_SMT
1492 bool "SMT scheduler support"
1493 depends on ARM_CPU_TOPOLOGY
1494 help
1495 Improves the CPU scheduler's decision making when dealing with
1496 MultiThreading at a cost of slightly increased overhead in some
1497 places. If unsure say N here.
1498
a8cbcd92
RK
1499config HAVE_ARM_SCU
1500 bool
a8cbcd92
RK
1501 help
1502 This option enables support for the ARM system coherency unit
1503
f32f4ce2
RK
1504config HAVE_ARM_TWD
1505 bool
1506 depends on SMP
15095bb0 1507 select TICK_ONESHOT
f32f4ce2
RK
1508 help
1509 This options enables support for the ARM timer and watchdog unit
1510
8d5796d2
LB
1511choice
1512 prompt "Memory split"
1513 default VMSPLIT_3G
1514 help
1515 Select the desired split between kernel and user memory.
1516
1517 If you are not absolutely sure what you are doing, leave this
1518 option alone!
1519
1520 config VMSPLIT_3G
1521 bool "3G/1G user/kernel split"
1522 config VMSPLIT_2G
1523 bool "2G/2G user/kernel split"
1524 config VMSPLIT_1G
1525 bool "1G/3G user/kernel split"
1526endchoice
1527
1528config PAGE_OFFSET
1529 hex
1530 default 0x40000000 if VMSPLIT_1G
1531 default 0x80000000 if VMSPLIT_2G
1532 default 0xC0000000
1533
1da177e4
LT
1534config NR_CPUS
1535 int "Maximum number of CPUs (2-32)"
1536 range 2 32
1537 depends on SMP
1538 default "4"
1539
a054a811
RK
1540config HOTPLUG_CPU
1541 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1542 depends on SMP && HOTPLUG && EXPERIMENTAL
1543 help
1544 Say Y here to experiment with turning CPUs off and on. CPUs
1545 can be controlled through /sys/devices/system/cpu.
1546
37ee16ae
RK
1547config LOCAL_TIMERS
1548 bool "Use local timer interrupts"
971acb9b 1549 depends on SMP
37ee16ae 1550 default y
30d8bead 1551 select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
37ee16ae
RK
1552 help
1553 Enable support for local timers on SMP platforms, rather then the
1554 legacy IPI broadcast method. Local timers allows the system
1555 accounting to be spread across the timer interval, preventing a
1556 "thundering herd" at every timer tick.
1557
d45a398f 1558source kernel/Kconfig.preempt
1da177e4 1559
f8065813
RK
1560config HZ
1561 int
49b7a491 1562 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
a73ddc61 1563 ARCH_S5PV210 || ARCH_EXYNOS4
bfe65704 1564 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
5248c657 1565 default AT91_TIMER_HZ if ARCH_AT91
5da3e714 1566 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
f8065813
RK
1567 default 100
1568
16c79651 1569config THUMB2_KERNEL
4a50bfe3 1570 bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
e399b1a4 1571 depends on CPU_V7 && !CPU_V6 && !CPU_V6K && EXPERIMENTAL
16c79651
CM
1572 select AEABI
1573 select ARM_ASM_UNIFIED
89bace65 1574 select ARM_UNWIND
16c79651
CM
1575 help
1576 By enabling this option, the kernel will be compiled in
1577 Thumb-2 mode. A compiler/assembler that understand the unified
1578 ARM-Thumb syntax is needed.
1579
1580 If unsure, say N.
1581
6f685c5c
DM
1582config THUMB2_AVOID_R_ARM_THM_JUMP11
1583 bool "Work around buggy Thumb-2 short branch relocations in gas"
1584 depends on THUMB2_KERNEL && MODULES
1585 default y
1586 help
1587 Various binutils versions can resolve Thumb-2 branches to
1588 locally-defined, preemptible global symbols as short-range "b.n"
1589 branch instructions.
1590
1591 This is a problem, because there's no guarantee the final
1592 destination of the symbol, or any candidate locations for a
1593 trampoline, are within range of the branch. For this reason, the
1594 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1595 relocation in modules at all, and it makes little sense to add
1596 support.
1597
1598 The symptom is that the kernel fails with an "unsupported
1599 relocation" error when loading some modules.
1600
1601 Until fixed tools are available, passing
1602 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1603 code which hits this problem, at the cost of a bit of extra runtime
1604 stack usage in some cases.
1605
1606 The problem is described in more detail at:
1607 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1608
1609 Only Thumb-2 kernels are affected.
1610
1611 Unless you are sure your tools don't have this problem, say Y.
1612
0becb088
CM
1613config ARM_ASM_UNIFIED
1614 bool
1615
704bdda0
NP
1616config AEABI
1617 bool "Use the ARM EABI to compile the kernel"
1618 help
1619 This option allows for the kernel to be compiled using the latest
1620 ARM ABI (aka EABI). This is only useful if you are using a user
1621 space environment that is also compiled with EABI.
1622
1623 Since there are major incompatibilities between the legacy ABI and
1624 EABI, especially with regard to structure member alignment, this
1625 option also changes the kernel syscall calling convention to
1626 disambiguate both ABIs and allow for backward compatibility support
1627 (selected with CONFIG_OABI_COMPAT).
1628
1629 To use this you need GCC version 4.0.0 or later.
1630
6c90c872 1631config OABI_COMPAT
a73a3ff1 1632 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
9bc433a1 1633 depends on AEABI && EXPERIMENTAL && !THUMB2_KERNEL
6c90c872
NP
1634 default y
1635 help
1636 This option preserves the old syscall interface along with the
1637 new (ARM EABI) one. It also provides a compatibility layer to
1638 intercept syscalls that have structure arguments which layout
1639 in memory differs between the legacy ABI and the new ARM EABI
1640 (only for non "thumb" binaries). This option adds a tiny
1641 overhead to all syscalls and produces a slightly larger kernel.
1642 If you know you'll be using only pure EABI user space then you
1643 can say N here. If this option is not selected and you attempt
1644 to execute a legacy ABI binary then the result will be
1645 UNPREDICTABLE (in fact it can be predicted that it won't work
1646 at all). If in doubt say Y.
1647
eb33575c 1648config ARCH_HAS_HOLES_MEMORYMODEL
e80d6a24 1649 bool
e80d6a24 1650
05944d74
RK
1651config ARCH_SPARSEMEM_ENABLE
1652 bool
1653
07a2f737
RK
1654config ARCH_SPARSEMEM_DEFAULT
1655 def_bool ARCH_SPARSEMEM_ENABLE
1656
05944d74 1657config ARCH_SELECT_MEMORY_MODEL
be370302 1658 def_bool ARCH_SPARSEMEM_ENABLE
c80d79d7 1659
7b7bf499
WD
1660config HAVE_ARCH_PFN_VALID
1661 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1662
053a96ca 1663config HIGHMEM
e8db89a2
RK
1664 bool "High Memory Support"
1665 depends on MMU
053a96ca
NP
1666 help
1667 The address space of ARM processors is only 4 Gigabytes large
1668 and it has to accommodate user address space, kernel address
1669 space as well as some memory mapped IO. That means that, if you
1670 have a large amount of physical memory and/or IO, not all of the
1671 memory can be "permanently mapped" by the kernel. The physical
1672 memory that is not permanently mapped is called "high memory".
1673
1674 Depending on the selected kernel/user memory split, minimum
1675 vmalloc space and actual amount of RAM, you may not need this
1676 option which should result in a slightly faster kernel.
1677
1678 If unsure, say n.
1679
65cec8e3
RK
1680config HIGHPTE
1681 bool "Allocate 2nd-level pagetables from highmem"
1682 depends on HIGHMEM
65cec8e3 1683
1b8873a0
JI
1684config HW_PERF_EVENTS
1685 bool "Enable hardware performance counter support for perf events"
fe166148 1686 depends on PERF_EVENTS && CPU_HAS_PMU
1b8873a0
JI
1687 default y
1688 help
1689 Enable hardware performance counter support for perf events. If
1690 disabled, perf events will use software events only.
1691
3f22ab27
DH
1692source "mm/Kconfig"
1693
c1b2d970
MD
1694config FORCE_MAX_ZONEORDER
1695 int "Maximum zone order" if ARCH_SHMOBILE
1696 range 11 64 if ARCH_SHMOBILE
1697 default "9" if SA1111
1698 default "11"
1699 help
1700 The kernel memory allocator divides physically contiguous memory
1701 blocks into "zones", where each zone is a power of two number of
1702 pages. This option selects the largest power of two that the kernel
1703 keeps in the memory allocator. If you need to allocate very large
1704 blocks of physically contiguous memory, then you may need to
1705 increase this value.
1706
1707 This config option is actually maximum order plus one. For example,
1708 a value of 11 means that the largest free memory block is 2^10 pages.
1709
1da177e4
LT
1710config LEDS
1711 bool "Timer and CPU usage LEDs"
e055d5bf 1712 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
8c8fdbc9 1713 ARCH_EBSA285 || ARCH_INTEGRATOR || \
1da177e4
LT
1714 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1715 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
73a59c1c 1716 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
25329671 1717 ARCH_AT91 || ARCH_DAVINCI || \
ff3042fb 1718 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1da177e4
LT
1719 help
1720 If you say Y here, the LEDs on your machine will be used
1721 to provide useful information about your current system status.
1722
1723 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1724 be able to select which LEDs are active using the options below. If
1725 you are compiling a kernel for the EBSA-110 or the LART however, the
1726 red LED will simply flash regularly to indicate that the system is
1727 still functional. It is safe to say Y here if you have a CATS
1728 system, but the driver will do nothing.
1729
1730config LEDS_TIMER
1731 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
eebdf7d7
DB
1732 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1733 || MACH_OMAP_PERSEUS2
1da177e4 1734 depends on LEDS
0567a0c0 1735 depends on !GENERIC_CLOCKEVENTS
1da177e4
LT
1736 default y if ARCH_EBSA110
1737 help
1738 If you say Y here, one of the system LEDs (the green one on the
1739 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1740 will flash regularly to indicate that the system is still
1741 operational. This is mainly useful to kernel hackers who are
1742 debugging unstable kernels.
1743
1744 The LART uses the same LED for both Timer LED and CPU usage LED
1745 functions. You may choose to use both, but the Timer LED function
1746 will overrule the CPU usage LED.
1747
1748config LEDS_CPU
1749 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
eebdf7d7
DB
1750 !ARCH_OMAP) \
1751 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1752 || MACH_OMAP_PERSEUS2
1da177e4
LT
1753 depends on LEDS
1754 help
1755 If you say Y here, the red LED will be used to give a good real
1756 time indication of CPU usage, by lighting whenever the idle task
1757 is not currently executing.
1758
1759 The LART uses the same LED for both Timer LED and CPU usage LED
1760 functions. You may choose to use both, but the Timer LED function
1761 will overrule the CPU usage LED.
1762
1763config ALIGNMENT_TRAP
1764 bool
f12d0d7c 1765 depends on CPU_CP15_MMU
1da177e4 1766 default y if !ARCH_EBSA110
e119bfff 1767 select HAVE_PROC_CPU if PROC_FS
1da177e4 1768 help
84eb8d06 1769 ARM processors cannot fetch/store information which is not
1da177e4
LT
1770 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1771 address divisible by 4. On 32-bit ARM processors, these non-aligned
1772 fetch/store instructions will be emulated in software if you say
1773 here, which has a severe performance impact. This is necessary for
1774 correct operation of some network protocols. With an IP-only
1775 configuration it is safe to say N, otherwise say Y.
1776
39ec58f3
LB
1777config UACCESS_WITH_MEMCPY
1778 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1779 depends on MMU && EXPERIMENTAL
1780 default y if CPU_FEROCEON
1781 help
1782 Implement faster copy_to_user and clear_user methods for CPU
1783 cores where a 8-word STM instruction give significantly higher
1784 memory write throughput than a sequence of individual 32bit stores.
1785
1786 A possible side effect is a slight increase in scheduling latency
1787 between threads sharing the same address space if they invoke
1788 such copy operations with large buffers.
1789
1790 However, if the CPU data cache is using a write-allocate mode,
1791 this option is unlikely to provide any performance gain.
1792
70c70d97
NP
1793config SECCOMP
1794 bool
1795 prompt "Enable seccomp to safely compute untrusted bytecode"
1796 ---help---
1797 This kernel feature is useful for number crunching applications
1798 that may need to compute untrusted bytecode during their
1799 execution. By using pipes or other transports made available to
1800 the process as file descriptors supporting the read/write
1801 syscalls, it's possible to isolate those applications in
1802 their own address space using seccomp. Once seccomp is
1803 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1804 and the task is only allowed to execute a few safe syscalls
1805 defined by each seccomp mode.
1806
c743f380
NP
1807config CC_STACKPROTECTOR
1808 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
4a50bfe3 1809 depends on EXPERIMENTAL
c743f380
NP
1810 help
1811 This option turns on the -fstack-protector GCC feature. This
1812 feature puts, at the beginning of functions, a canary value on
1813 the stack just before the return address, and validates
1814 the value just before actually returning. Stack based buffer
1815 overflows (that need to overwrite this return address) now also
1816 overwrite the canary, which gets detected and the attack is then
1817 neutralized via a kernel panic.
1818 This feature requires gcc version 4.2 or above.
1819
73a65b3f
UKK
1820config DEPRECATED_PARAM_STRUCT
1821 bool "Provide old way to pass kernel parameters"
1822 help
1823 This was deprecated in 2001 and announced to live on for 5 years.
1824 Some old boot loaders still use this way.
1825
1da177e4
LT
1826endmenu
1827
1828menu "Boot options"
1829
9eb8f674
GL
1830config USE_OF
1831 bool "Flattened Device Tree support"
1832 select OF
1833 select OF_EARLY_FLATTREE
08a543ad 1834 select IRQ_DOMAIN
9eb8f674
GL
1835 help
1836 Include support for flattened device tree machine descriptions.
1837
1da177e4
LT
1838# Compressed boot loader in ROM. Yes, we really want to ask about
1839# TEXT and BSS so we preserve their values in the config files.
1840config ZBOOT_ROM_TEXT
1841 hex "Compressed ROM boot loader base address"
1842 default "0"
1843 help
1844 The physical address at which the ROM-able zImage is to be
1845 placed in the target. Platforms which normally make use of
1846 ROM-able zImage formats normally set this to a suitable
1847 value in their defconfig file.
1848
1849 If ZBOOT_ROM is not enabled, this has no effect.
1850
1851config ZBOOT_ROM_BSS
1852 hex "Compressed ROM boot loader BSS address"
1853 default "0"
1854 help
f8c440b2
DF
1855 The base address of an area of read/write memory in the target
1856 for the ROM-able zImage which must be available while the
1857 decompressor is running. It must be large enough to hold the
1858 entire decompressed kernel plus an additional 128 KiB.
1859 Platforms which normally make use of ROM-able zImage formats
1860 normally set this to a suitable value in their defconfig file.
1da177e4
LT
1861
1862 If ZBOOT_ROM is not enabled, this has no effect.
1863
1864config ZBOOT_ROM
1865 bool "Compressed boot loader in ROM/flash"
1866 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1867 help
1868 Say Y here if you intend to execute your compressed kernel image
1869 (zImage) directly from ROM or flash. If unsure, say N.
1870
090ab3ff
SH
1871choice
1872 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
1873 depends on ZBOOT_ROM && ARCH_SH7372 && EXPERIMENTAL
1874 default ZBOOT_ROM_NONE
1875 help
1876 Include experimental SD/MMC loading code in the ROM-able zImage.
1877 With this enabled it is possible to write the the ROM-able zImage
1878 kernel image to an MMC or SD card and boot the kernel straight
1879 from the reset vector. At reset the processor Mask ROM will load
1880 the first part of the the ROM-able zImage which in turn loads the
1881 rest the kernel image to RAM.
1882
1883config ZBOOT_ROM_NONE
1884 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1885 help
1886 Do not load image from SD or MMC
1887
f45b1149
SH
1888config ZBOOT_ROM_MMCIF
1889 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
f45b1149 1890 help
090ab3ff
SH
1891 Load image from MMCIF hardware block.
1892
1893config ZBOOT_ROM_SH_MOBILE_SDHI
1894 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1895 help
1896 Load image from SDHI hardware block
1897
1898endchoice
f45b1149 1899
e2a6a3aa
JB
1900config ARM_APPENDED_DTB
1901 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
1902 depends on OF && !ZBOOT_ROM && EXPERIMENTAL
1903 help
1904 With this option, the boot code will look for a device tree binary
1905 (DTB) appended to zImage
1906 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1907
1908 This is meant as a backward compatibility convenience for those
1909 systems with a bootloader that can't be upgraded to accommodate
1910 the documented boot protocol using a device tree.
1911
1912 Beware that there is very little in terms of protection against
1913 this option being confused by leftover garbage in memory that might
1914 look like a DTB header after a reboot if no actual DTB is appended
1915 to zImage. Do not leave this option active in a production kernel
1916 if you don't intend to always append a DTB. Proper passing of the
1917 location into r2 of a bootloader provided DTB is always preferable
1918 to this option.
1919
b90b9a38
NP
1920config ARM_ATAG_DTB_COMPAT
1921 bool "Supplement the appended DTB with traditional ATAG information"
1922 depends on ARM_APPENDED_DTB
1923 help
1924 Some old bootloaders can't be updated to a DTB capable one, yet
1925 they provide ATAGs with memory configuration, the ramdisk address,
1926 the kernel cmdline string, etc. Such information is dynamically
1927 provided by the bootloader and can't always be stored in a static
1928 DTB. To allow a device tree enabled kernel to be used with such
1929 bootloaders, this option allows zImage to extract the information
1930 from the ATAG list and store it at run time into the appended DTB.
1931
1da177e4
LT
1932config CMDLINE
1933 string "Default kernel command string"
1934 default ""
1935 help
1936 On some architectures (EBSA110 and CATS), there is currently no way
1937 for the boot loader to pass arguments to the kernel. For these
1938 architectures, you should supply some command-line options at build
1939 time by entering them here. As a minimum, you should specify the
1940 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1941
4394c124
VB
1942choice
1943 prompt "Kernel command line type" if CMDLINE != ""
1944 default CMDLINE_FROM_BOOTLOADER
1945
1946config CMDLINE_FROM_BOOTLOADER
1947 bool "Use bootloader kernel arguments if available"
1948 help
1949 Uses the command-line options passed by the boot loader. If
1950 the boot loader doesn't provide any, the default kernel command
1951 string provided in CMDLINE will be used.
1952
1953config CMDLINE_EXTEND
1954 bool "Extend bootloader kernel arguments"
1955 help
1956 The command-line arguments provided by the boot loader will be
1957 appended to the default kernel command string.
1958
92d2040d
AH
1959config CMDLINE_FORCE
1960 bool "Always use the default kernel command string"
92d2040d
AH
1961 help
1962 Always use the default kernel command string, even if the boot
1963 loader passes other arguments to the kernel.
1964 This is useful if you cannot or don't want to change the
1965 command-line options your boot loader passes to the kernel.
4394c124 1966endchoice
92d2040d 1967
1da177e4
LT
1968config XIP_KERNEL
1969 bool "Kernel Execute-In-Place from ROM"
1970 depends on !ZBOOT_ROM
1971 help
1972 Execute-In-Place allows the kernel to run from non-volatile storage
1973 directly addressable by the CPU, such as NOR flash. This saves RAM
1974 space since the text section of the kernel is not loaded from flash
1975 to RAM. Read-write sections, such as the data section and stack,
1976 are still copied to RAM. The XIP kernel is not compressed since
1977 it has to run directly from flash, so it will take more space to
1978 store it. The flash address used to link the kernel object files,
1979 and for storing it, is configuration dependent. Therefore, if you
1980 say Y here, you must know the proper physical address where to
1981 store the kernel image depending on your own flash memory usage.
1982
1983 Also note that the make target becomes "make xipImage" rather than
1984 "make zImage" or "make Image". The final kernel binary to put in
1985 ROM memory will be arch/arm/boot/xipImage.
1986
1987 If unsure, say N.
1988
1989config XIP_PHYS_ADDR
1990 hex "XIP Kernel Physical Location"
1991 depends on XIP_KERNEL
1992 default "0x00080000"
1993 help
1994 This is the physical address in your flash memory the kernel will
1995 be linked for and stored to. This address is dependent on your
1996 own flash usage.
1997
c587e4a6
RP
1998config KEXEC
1999 bool "Kexec system call (EXPERIMENTAL)"
2000 depends on EXPERIMENTAL
2001 help
2002 kexec is a system call that implements the ability to shutdown your
2003 current kernel, and to start another kernel. It is like a reboot
01dd2fbf 2004 but it is independent of the system firmware. And like a reboot
c587e4a6
RP
2005 you can start any kernel with it, not just Linux.
2006
2007 It is an ongoing process to be certain the hardware in a machine
2008 is properly shutdown, so do not be surprised if this code does not
2009 initially work for you. It may help to enable device hotplugging
2010 support.
2011
4cd9d6f7
RP
2012config ATAGS_PROC
2013 bool "Export atags in procfs"
b98d7291
UL
2014 depends on KEXEC
2015 default y
4cd9d6f7
RP
2016 help
2017 Should the atags used to boot the kernel be exported in an "atags"
2018 file in procfs. Useful with kexec.
2019
cb5d39b3
MW
2020config CRASH_DUMP
2021 bool "Build kdump crash kernel (EXPERIMENTAL)"
2022 depends on EXPERIMENTAL
2023 help
2024 Generate crash dump after being started by kexec. This should
2025 be normally only set in special crash dump kernels which are
2026 loaded in the main kernel with kexec-tools into a specially
2027 reserved region and then later executed after a crash by
2028 kdump/kexec. The crash dump kernel must be compiled to a
2029 memory address not used by the main kernel
2030
2031 For more details see Documentation/kdump/kdump.txt
2032
e69edc79
EM
2033config AUTO_ZRELADDR
2034 bool "Auto calculation of the decompressed kernel image address"
2035 depends on !ZBOOT_ROM && !ARCH_U300
2036 help
2037 ZRELADDR is the physical address where the decompressed kernel
2038 image will be placed. If AUTO_ZRELADDR is selected, the address
2039 will be determined at run-time by masking the current IP with
2040 0xf8000000. This assumes the zImage being placed in the first 128MB
2041 from start of memory.
2042
1da177e4
LT
2043endmenu
2044
ac9d7efc 2045menu "CPU Power Management"
1da177e4 2046
89c52ed4 2047if ARCH_HAS_CPUFREQ
1da177e4
LT
2048
2049source "drivers/cpufreq/Kconfig"
2050
64f102b6
YS
2051config CPU_FREQ_IMX
2052 tristate "CPUfreq driver for i.MX CPUs"
2053 depends on ARCH_MXC && CPU_FREQ
2054 help
2055 This enables the CPUfreq driver for i.MX CPUs.
2056
1da177e4
LT
2057config CPU_FREQ_SA1100
2058 bool
1da177e4
LT
2059
2060config CPU_FREQ_SA1110
2061 bool
1da177e4
LT
2062
2063config CPU_FREQ_INTEGRATOR
2064 tristate "CPUfreq driver for ARM Integrator CPUs"
2065 depends on ARCH_INTEGRATOR && CPU_FREQ
2066 default y
2067 help
2068 This enables the CPUfreq driver for ARM Integrator CPUs.
2069
2070 For details, take a look at <file:Documentation/cpu-freq>.
2071
2072 If in doubt, say Y.
2073
9e2697ff
RK
2074config CPU_FREQ_PXA
2075 bool
2076 depends on CPU_FREQ && ARCH_PXA && PXA25x
2077 default y
ca7d156e 2078 select CPU_FREQ_TABLE
9e2697ff
RK
2079 select CPU_FREQ_DEFAULT_GOV_USERSPACE
2080
9d56c02a
BD
2081config CPU_FREQ_S3C
2082 bool
2083 help
2084 Internal configuration node for common cpufreq on Samsung SoC
2085
2086config CPU_FREQ_S3C24XX
4a50bfe3 2087 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
9d56c02a
BD
2088 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
2089 select CPU_FREQ_S3C
2090 help
2091 This enables the CPUfreq driver for the Samsung S3C24XX family
2092 of CPUs.
2093
2094 For details, take a look at <file:Documentation/cpu-freq>.
2095
2096 If in doubt, say N.
2097
2098config CPU_FREQ_S3C24XX_PLL
4a50bfe3 2099 bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
9d56c02a
BD
2100 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
2101 help
2102 Compile in support for changing the PLL frequency from the
2103 S3C24XX series CPUfreq driver. The PLL takes time to settle
2104 after a frequency change, so by default it is not enabled.
2105
2106 This also means that the PLL tables for the selected CPU(s) will
2107 be built which may increase the size of the kernel image.
2108
2109config CPU_FREQ_S3C24XX_DEBUG
2110 bool "Debug CPUfreq Samsung driver core"
2111 depends on CPU_FREQ_S3C24XX
2112 help
2113 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
2114
2115config CPU_FREQ_S3C24XX_IODEBUG
2116 bool "Debug CPUfreq Samsung driver IO timing"
2117 depends on CPU_FREQ_S3C24XX
2118 help
2119 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
2120
e6d197a6
BD
2121config CPU_FREQ_S3C24XX_DEBUGFS
2122 bool "Export debugfs for CPUFreq"
2123 depends on CPU_FREQ_S3C24XX && DEBUG_FS
2124 help
2125 Export status information via debugfs.
2126
1da177e4
LT
2127endif
2128
ac9d7efc
RK
2129source "drivers/cpuidle/Kconfig"
2130
2131endmenu
2132
1da177e4
LT
2133menu "Floating point emulation"
2134
2135comment "At least one emulation must be selected"
2136
2137config FPE_NWFPE
2138 bool "NWFPE math emulation"
593c252a 2139 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
1da177e4
LT
2140 ---help---
2141 Say Y to include the NWFPE floating point emulator in the kernel.
2142 This is necessary to run most binaries. Linux does not currently
2143 support floating point hardware so you need to say Y here even if
2144 your machine has an FPA or floating point co-processor podule.
2145
2146 You may say N here if you are going to load the Acorn FPEmulator
2147 early in the bootup.
2148
2149config FPE_NWFPE_XP
2150 bool "Support extended precision"
bedf142b 2151 depends on FPE_NWFPE
1da177e4
LT
2152 help
2153 Say Y to include 80-bit support in the kernel floating-point
2154 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2155 Note that gcc does not generate 80-bit operations by default,
2156 so in most cases this option only enlarges the size of the
2157 floating point emulator without any good reason.
2158
2159 You almost surely want to say N here.
2160
2161config FPE_FASTFPE
2162 bool "FastFPE math emulation (EXPERIMENTAL)"
8993a44c 2163 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1da177e4
LT
2164 ---help---
2165 Say Y here to include the FAST floating point emulator in the kernel.
2166 This is an experimental much faster emulator which now also has full
2167 precision for the mantissa. It does not support any exceptions.
2168 It is very simple, and approximately 3-6 times faster than NWFPE.
2169
2170 It should be sufficient for most programs. It may be not suitable
2171 for scientific calculations, but you have to check this for yourself.
2172 If you do not feel you need a faster FP emulation you should better
2173 choose NWFPE.
2174
2175config VFP
2176 bool "VFP-format floating point maths"
e399b1a4 2177 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1da177e4
LT
2178 help
2179 Say Y to include VFP support code in the kernel. This is needed
2180 if your hardware includes a VFP unit.
2181
2182 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2183 release notes and additional status information.
2184
2185 Say N if your target does not have VFP hardware.
2186
25ebee02
CM
2187config VFPv3
2188 bool
2189 depends on VFP
2190 default y if CPU_V7
2191
b5872db4
CM
2192config NEON
2193 bool "Advanced SIMD (NEON) Extension support"
2194 depends on VFPv3 && CPU_V7
2195 help
2196 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2197 Extension.
2198
1da177e4
LT
2199endmenu
2200
2201menu "Userspace binary formats"
2202
2203source "fs/Kconfig.binfmt"
2204
2205config ARTHUR
2206 tristate "RISC OS personality"
704bdda0 2207 depends on !AEABI
1da177e4
LT
2208 help
2209 Say Y here to include the kernel code necessary if you want to run
2210 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2211 experimental; if this sounds frightening, say N and sleep in peace.
2212 You can also say M here to compile this support as a module (which
2213 will be called arthur).
2214
2215endmenu
2216
2217menu "Power management options"
2218
eceab4ac 2219source "kernel/power/Kconfig"
1da177e4 2220
f4cb5700 2221config ARCH_SUSPEND_POSSIBLE
6b6844dd 2222 depends on !ARCH_S5PC100
6a786182
RK
2223 depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
2224 CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE
f4cb5700
JB
2225 def_bool y
2226
15e0d9e3
AB
2227config ARM_CPU_SUSPEND
2228 def_bool PM_SLEEP
2229
1da177e4
LT
2230endmenu
2231
d5950b43
SR
2232source "net/Kconfig"
2233
ac25150f 2234source "drivers/Kconfig"
1da177e4
LT
2235
2236source "fs/Kconfig"
2237
1da177e4
LT
2238source "arch/arm/Kconfig.debug"
2239
2240source "security/Kconfig"
2241
2242source "crypto/Kconfig"
2243
2244source "lib/Kconfig"
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