ARM: dma-mapping: use alloc, mmap, free from dma_ops
[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
2dc6a016 7 select HAVE_DMA_ATTRS
2778f620 8 select HAVE_MEMBLOCK
12b824fb 9 select RTC_LIB
75e7153a 10 select SYS_SUPPORTS_APM_EMULATION
a41297a0 11 select GENERIC_ATOMIC64 if (CPU_V6 || !CPU_32v6K || !AEABI)
fe166148 12 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
09f05d85 13 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
5cbad0eb 14 select HAVE_ARCH_KGDB
856bc356 15 select HAVE_KPROBES if !XIP_KERNEL
9edddaa2 16 select HAVE_KRETPROBES if (HAVE_KPROBES)
606576ce 17 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
80be7a7f
RV
18 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
19 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
0e341af8 20 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
e39f5602 21 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
1fe53268 22 select HAVE_GENERIC_DMA_COHERENT
e7db7b42
AT
23 select HAVE_KERNEL_GZIP
24 select HAVE_KERNEL_LZO
6e8699f7 25 select HAVE_KERNEL_LZMA
a7f464f3 26 select HAVE_KERNEL_XZ
e360adbe 27 select HAVE_IRQ_WORK
7ada189f
JI
28 select HAVE_PERF_EVENTS
29 select PERF_USE_VMALLOC
e513f8bf 30 select HAVE_REGS_AND_STACK_ACCESS_API
e399b1a4 31 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
ed60453f 32 select HAVE_C_RECORDMCOUNT
e2a93ecc 33 select HAVE_GENERIC_HARDIRQS
25a5662a 34 select GENERIC_IRQ_SHOW
1fb90263 35 select CPU_PM if (SUSPEND || CPU_IDLE)
e5bfb72c 36 select GENERIC_PCI_IOMAP
fada8dcf 37 select HAVE_BPF_JIT if NET
1da177e4
LT
38 help
39 The ARM series is a line of low-power-consumption RISC chip designs
f6c8965a 40 licensed by ARM Ltd and targeted at embedded applications and
1da177e4 41 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
f6c8965a 42 manufactured, but legacy ARM-based PC hardware remains popular in
1da177e4
LT
43 Europe. There is an ARM Linux project with a web page at
44 <http://www.arm.linux.org.uk/>.
45
74facffe
RK
46config ARM_HAS_SG_CHAIN
47 bool
48
1a189b97
RK
49config HAVE_PWM
50 bool
51
0b05da72
HUK
52config MIGHT_HAVE_PCI
53 bool
54
75e7153a
RB
55config SYS_SUPPORTS_APM_EMULATION
56 bool
57
0a938b97
DB
58config GENERIC_GPIO
59 bool
0a938b97 60
5cfc8ee0
JS
61config ARCH_USES_GETTIMEOFFSET
62 bool
63 default n
746140c7 64
0567a0c0
KH
65config GENERIC_CLOCKEVENTS
66 bool
0567a0c0 67
a8655e83
CM
68config GENERIC_CLOCKEVENTS_BROADCAST
69 bool
70 depends on GENERIC_CLOCKEVENTS
5388a6b2 71 default y if SMP
a8655e83 72
bf9dd360
RH
73config KTIME_SCALAR
74 bool
75 default y
76
bc581770
LW
77config HAVE_TCM
78 bool
79 select GENERIC_ALLOCATOR
80
e119bfff
RK
81config HAVE_PROC_CPU
82 bool
83
5ea81769
AV
84config NO_IOPORT
85 bool
5ea81769 86
1da177e4
LT
87config EISA
88 bool
89 ---help---
90 The Extended Industry Standard Architecture (EISA) bus was
91 developed as an open alternative to the IBM MicroChannel bus.
92
93 The EISA bus provided some of the features of the IBM MicroChannel
94 bus while maintaining backward compatibility with cards made for
95 the older ISA bus. The EISA bus saw limited use between 1988 and
96 1995 when it was made obsolete by the PCI bus.
97
98 Say Y here if you are building a kernel for an EISA-based machine.
99
100 Otherwise, say N.
101
102config SBUS
103 bool
104
105config MCA
106 bool
107 help
108 MicroChannel Architecture is found in some IBM PS/2 machines and
109 laptops. It is a bus system similar to PCI or ISA. See
110 <file:Documentation/mca.txt> (and especially the web page given
111 there) before attempting to build an MCA bus kernel.
112
f16fb1ec
RK
113config STACKTRACE_SUPPORT
114 bool
115 default y
116
f76e9154
NP
117config HAVE_LATENCYTOP_SUPPORT
118 bool
119 depends on !SMP
120 default y
121
f16fb1ec
RK
122config LOCKDEP_SUPPORT
123 bool
124 default y
125
7ad1bcb2
RK
126config TRACE_IRQFLAGS_SUPPORT
127 bool
128 default y
129
4a2581a0
TG
130config HARDIRQS_SW_RESEND
131 bool
132 default y
133
134config GENERIC_IRQ_PROBE
135 bool
136 default y
137
95c354fe
NP
138config GENERIC_LOCKBREAK
139 bool
140 default y
141 depends on SMP && PREEMPT
142
1da177e4
LT
143config RWSEM_GENERIC_SPINLOCK
144 bool
145 default y
146
147config RWSEM_XCHGADD_ALGORITHM
148 bool
149
f0d1b0b3
DH
150config ARCH_HAS_ILOG2_U32
151 bool
f0d1b0b3
DH
152
153config ARCH_HAS_ILOG2_U64
154 bool
f0d1b0b3 155
89c52ed4
BD
156config ARCH_HAS_CPUFREQ
157 bool
158 help
159 Internal node to signify that the ARCH has CPUFREQ support
160 and that the relevant menu configurations are displayed for
161 it.
162
c7b0aff4
KH
163config ARCH_HAS_CPU_IDLE_WAIT
164 def_bool y
165
b89c3b16
AM
166config GENERIC_HWEIGHT
167 bool
168 default y
169
1da177e4
LT
170config GENERIC_CALIBRATE_DELAY
171 bool
172 default y
173
a08b6b79
Z
174config ARCH_MAY_HAVE_PC_FDC
175 bool
176
5ac6da66
CL
177config ZONE_DMA
178 bool
5ac6da66 179
ccd7ab7f
FT
180config NEED_DMA_MAP_STATE
181 def_bool y
182
58af4a24
RH
183config ARCH_HAS_DMA_SET_COHERENT_MASK
184 bool
185
1da177e4
LT
186config GENERIC_ISA_DMA
187 bool
188
1da177e4
LT
189config FIQ
190 bool
191
13a5045d
RH
192config NEED_RET_TO_USER
193 bool
194
034d2f5a
AV
195config ARCH_MTD_XIP
196 bool
197
c760fc19
HC
198config VECTORS_BASE
199 hex
6afd6fae 200 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
c760fc19
HC
201 default DRAM_BASE if REMAP_VECTORS_TO_RAM
202 default 0x00000000
203 help
204 The base address of exception vectors.
205
dc21af99 206config ARM_PATCH_PHYS_VIRT
c1becedc
RK
207 bool "Patch physical to virtual translations at runtime" if EMBEDDED
208 default y
b511d75d 209 depends on !XIP_KERNEL && MMU
dc21af99
RK
210 depends on !ARCH_REALVIEW || !SPARSEMEM
211 help
111e9a5c
RK
212 Patch phys-to-virt and virt-to-phys translation functions at
213 boot and module load time according to the position of the
214 kernel in system memory.
dc21af99 215
111e9a5c 216 This can only be used with non-XIP MMU kernels where the base
daece596 217 of physical memory is at a 16MB boundary.
dc21af99 218
c1becedc
RK
219 Only disable this option if you know that you do not require
220 this feature (eg, building a kernel for a single machine) and
221 you need to shrink the kernel to the minimal size.
dc21af99 222
c334bc15
RH
223config NEED_MACH_IO_H
224 bool
225 help
226 Select this when mach/io.h is required to provide special
227 definitions for this platform. The need for mach/io.h should
228 be avoided when possible.
229
0cdc8b92 230config NEED_MACH_MEMORY_H
1b9f95f8
NP
231 bool
232 help
0cdc8b92
NP
233 Select this when mach/memory.h is required to provide special
234 definitions for this platform. The need for mach/memory.h should
235 be avoided when possible.
dc21af99 236
1b9f95f8 237config PHYS_OFFSET
974c0724 238 hex "Physical address of main memory" if MMU
0cdc8b92 239 depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H
974c0724 240 default DRAM_BASE if !MMU
111e9a5c 241 help
1b9f95f8
NP
242 Please provide the physical address corresponding to the
243 location of main memory in your system.
cada3c08 244
87e040b6
SG
245config GENERIC_BUG
246 def_bool y
247 depends on BUG
248
1da177e4
LT
249source "init/Kconfig"
250
dc52ddc0
MH
251source "kernel/Kconfig.freezer"
252
1da177e4
LT
253menu "System Type"
254
3c427975
HC
255config MMU
256 bool "MMU-based Paged Memory Management Support"
257 default y
258 help
259 Select if you want MMU-based virtualised addressing space
260 support by paged memory management. If unsure, say 'Y'.
261
ccf50e23
RK
262#
263# The "ARM system type" choice list is ordered alphabetically by option
264# text. Please add new entries in the option alphabetic order.
265#
1da177e4
LT
266choice
267 prompt "ARM system type"
6a0e2430 268 default ARCH_VERSATILE
1da177e4 269
4af6fee1
DS
270config ARCH_INTEGRATOR
271 bool "ARM Ltd. Integrator family"
272 select ARM_AMBA
89c52ed4 273 select ARCH_HAS_CPUFREQ
6d803ba7 274 select CLKDEV_LOOKUP
aa3831cf 275 select HAVE_MACH_CLKDEV
9904f793 276 select HAVE_TCM
c5a0adb5 277 select ICST
13edd86d 278 select GENERIC_CLOCKEVENTS
f4b8b319 279 select PLAT_VERSATILE
c41b16f8 280 select PLAT_VERSATILE_FPGA_IRQ
c334bc15 281 select NEED_MACH_IO_H
0cdc8b92 282 select NEED_MACH_MEMORY_H
695436e3 283 select SPARSE_IRQ
4af6fee1
DS
284 help
285 Support for ARM's Integrator platform.
286
287config ARCH_REALVIEW
288 bool "ARM Ltd. RealView family"
289 select ARM_AMBA
6d803ba7 290 select CLKDEV_LOOKUP
aa3831cf 291 select HAVE_MACH_CLKDEV
c5a0adb5 292 select ICST
ae30ceac 293 select GENERIC_CLOCKEVENTS
eb7fffa3 294 select ARCH_WANT_OPTIONAL_GPIOLIB
f4b8b319 295 select PLAT_VERSATILE
3cb5ee49 296 select PLAT_VERSATILE_CLCD
e3887714 297 select ARM_TIMER_SP804
b56ba8aa 298 select GPIO_PL061 if GPIOLIB
0cdc8b92 299 select NEED_MACH_MEMORY_H
4af6fee1
DS
300 help
301 This enables support for ARM Ltd RealView boards.
302
303config ARCH_VERSATILE
304 bool "ARM Ltd. Versatile family"
305 select ARM_AMBA
306 select ARM_VIC
6d803ba7 307 select CLKDEV_LOOKUP
aa3831cf 308 select HAVE_MACH_CLKDEV
c5a0adb5 309 select ICST
89df1272 310 select GENERIC_CLOCKEVENTS
bbeddc43 311 select ARCH_WANT_OPTIONAL_GPIOLIB
f4b8b319 312 select PLAT_VERSATILE
3414ba8c 313 select PLAT_VERSATILE_CLCD
c41b16f8 314 select PLAT_VERSATILE_FPGA_IRQ
e3887714 315 select ARM_TIMER_SP804
4af6fee1
DS
316 help
317 This enables support for ARM Ltd Versatile board.
318
ceade897
RK
319config ARCH_VEXPRESS
320 bool "ARM Ltd. Versatile Express family"
321 select ARCH_WANT_OPTIONAL_GPIOLIB
322 select ARM_AMBA
323 select ARM_TIMER_SP804
6d803ba7 324 select CLKDEV_LOOKUP
aa3831cf 325 select HAVE_MACH_CLKDEV
ceade897 326 select GENERIC_CLOCKEVENTS
ceade897 327 select HAVE_CLK
95c34f83 328 select HAVE_PATA_PLATFORM
ceade897 329 select ICST
ba81f502 330 select NO_IOPORT
ceade897 331 select PLAT_VERSATILE
0fb44b91 332 select PLAT_VERSATILE_CLCD
ceade897
RK
333 help
334 This enables support for the ARM Ltd Versatile Express boards.
335
8fc5ffa0
AV
336config ARCH_AT91
337 bool "Atmel AT91"
f373e8c0 338 select ARCH_REQUIRE_GPIOLIB
93686ae8 339 select HAVE_CLK
bd602995 340 select CLKDEV_LOOKUP
e261501d 341 select IRQ_DOMAIN
1ac02d79 342 select NEED_MACH_IO_H if PCCARD
4af6fee1 343 help
2b3b3516 344 This enables support for systems based on the Atmel AT91RM9200,
9918ceaf 345 AT91SAM9 processors.
4af6fee1 346
ccf50e23
RK
347config ARCH_BCMRING
348 bool "Broadcom BCMRING"
349 depends on MMU
350 select CPU_V6
351 select ARM_AMBA
82d63734 352 select ARM_TIMER_SP804
6d803ba7 353 select CLKDEV_LOOKUP
ccf50e23
RK
354 select GENERIC_CLOCKEVENTS
355 select ARCH_WANT_OPTIONAL_GPIOLIB
356 help
357 Support for Broadcom's BCMRing platform.
358
220e6cf7
RH
359config ARCH_HIGHBANK
360 bool "Calxeda Highbank-based"
361 select ARCH_WANT_OPTIONAL_GPIOLIB
362 select ARM_AMBA
363 select ARM_GIC
364 select ARM_TIMER_SP804
22d80379 365 select CACHE_L2X0
220e6cf7
RH
366 select CLKDEV_LOOKUP
367 select CPU_V7
368 select GENERIC_CLOCKEVENTS
369 select HAVE_ARM_SCU
3b55658a 370 select HAVE_SMP
fdfa64a4 371 select SPARSE_IRQ
220e6cf7
RH
372 select USE_OF
373 help
374 Support for the Calxeda Highbank SoC based boards.
375
1da177e4 376config ARCH_CLPS711X
4af6fee1 377 bool "Cirrus Logic CLPS711x/EP721x-based"
c750815e 378 select CPU_ARM720T
5cfc8ee0 379 select ARCH_USES_GETTIMEOFFSET
0cdc8b92 380 select NEED_MACH_MEMORY_H
f999b8bd
MM
381 help
382 Support for Cirrus Logic 711x/721x based boards.
1da177e4 383
d94f944e
AV
384config ARCH_CNS3XXX
385 bool "Cavium Networks CNS3XXX family"
00d2711d 386 select CPU_V6K
d94f944e
AV
387 select GENERIC_CLOCKEVENTS
388 select ARM_GIC
ce5ea9f3 389 select MIGHT_HAVE_CACHE_L2X0
0b05da72 390 select MIGHT_HAVE_PCI
5f32f7a0 391 select PCI_DOMAINS if PCI
d94f944e
AV
392 help
393 Support for Cavium Networks CNS3XXX platform.
394
788c9700
RK
395config ARCH_GEMINI
396 bool "Cortina Systems Gemini"
397 select CPU_FA526
788c9700 398 select ARCH_REQUIRE_GPIOLIB
5cfc8ee0 399 select ARCH_USES_GETTIMEOFFSET
788c9700
RK
400 help
401 Support for the Cortina Systems Gemini family SoCs
402
3a6cb8ce
AB
403config ARCH_PRIMA2
404 bool "CSR SiRFSoC PRIMA2 ARM Cortex A9 Platform"
405 select CPU_V7
3a6cb8ce
AB
406 select NO_IOPORT
407 select GENERIC_CLOCKEVENTS
408 select CLKDEV_LOOKUP
409 select GENERIC_IRQ_CHIP
ce5ea9f3 410 select MIGHT_HAVE_CACHE_L2X0
3a6cb8ce
AB
411 select USE_OF
412 select ZONE_DMA
413 help
414 Support for CSR SiRFSoC ARM Cortex A9 Platform
415
1da177e4
LT
416config ARCH_EBSA110
417 bool "EBSA-110"
c750815e 418 select CPU_SA110
f7e68bbf 419 select ISA
c5eb2a2b 420 select NO_IOPORT
5cfc8ee0 421 select ARCH_USES_GETTIMEOFFSET
c334bc15 422 select NEED_MACH_IO_H
0cdc8b92 423 select NEED_MACH_MEMORY_H
1da177e4
LT
424 help
425 This is an evaluation board for the StrongARM processor available
f6c8965a 426 from Digital. It has limited hardware on-board, including an
1da177e4
LT
427 Ethernet interface, two PCMCIA sockets, two serial ports and a
428 parallel port.
429
e7736d47
LB
430config ARCH_EP93XX
431 bool "EP93xx-based"
c750815e 432 select CPU_ARM920T
e7736d47
LB
433 select ARM_AMBA
434 select ARM_VIC
6d803ba7 435 select CLKDEV_LOOKUP
7444a72e 436 select ARCH_REQUIRE_GPIOLIB
eb33575c 437 select ARCH_HAS_HOLES_MEMORYMODEL
5cfc8ee0 438 select ARCH_USES_GETTIMEOFFSET
5725aeae 439 select NEED_MACH_MEMORY_H
e7736d47
LB
440 help
441 This enables support for the Cirrus EP93xx series of CPUs.
442
1da177e4
LT
443config ARCH_FOOTBRIDGE
444 bool "FootBridge"
c750815e 445 select CPU_SA110
1da177e4 446 select FOOTBRIDGE
4e8d7637 447 select GENERIC_CLOCKEVENTS
d0ee9f40 448 select HAVE_IDE
c334bc15 449 select NEED_MACH_IO_H
0cdc8b92 450 select NEED_MACH_MEMORY_H
f999b8bd
MM
451 help
452 Support for systems based on the DC21285 companion chip
453 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1da177e4 454
788c9700
RK
455config ARCH_MXC
456 bool "Freescale MXC/iMX-based"
788c9700 457 select GENERIC_CLOCKEVENTS
788c9700 458 select ARCH_REQUIRE_GPIOLIB
6d803ba7 459 select CLKDEV_LOOKUP
234b6ced 460 select CLKSRC_MMIO
8b6c44f1 461 select GENERIC_IRQ_CHIP
ffa2ea3f 462 select MULTI_IRQ_HANDLER
788c9700
RK
463 help
464 Support for Freescale MXC/iMX-based family of processors
465
1d3f33d5
SG
466config ARCH_MXS
467 bool "Freescale MXS-based"
468 select GENERIC_CLOCKEVENTS
469 select ARCH_REQUIRE_GPIOLIB
b9214b97 470 select CLKDEV_LOOKUP
5c61ddcf 471 select CLKSRC_MMIO
6abda3e1 472 select HAVE_CLK_PREPARE
1d3f33d5
SG
473 help
474 Support for Freescale MXS-based family of processors
475
4af6fee1
DS
476config ARCH_NETX
477 bool "Hilscher NetX based"
234b6ced 478 select CLKSRC_MMIO
c750815e 479 select CPU_ARM926T
4af6fee1 480 select ARM_VIC
2fcfe6b8 481 select GENERIC_CLOCKEVENTS
f999b8bd 482 help
4af6fee1
DS
483 This enables support for systems based on the Hilscher NetX Soc
484
485config ARCH_H720X
486 bool "Hynix HMS720x-based"
c750815e 487 select CPU_ARM720T
4af6fee1 488 select ISA_DMA_API
5cfc8ee0 489 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
490 help
491 This enables support for systems based on the Hynix HMS720x
492
3b938be6
RK
493config ARCH_IOP13XX
494 bool "IOP13xx-based"
495 depends on MMU
c750815e 496 select CPU_XSC3
3b938be6
RK
497 select PLAT_IOP
498 select PCI
499 select ARCH_SUPPORTS_MSI
8d5796d2 500 select VMSPLIT_1G
c334bc15 501 select NEED_MACH_IO_H
0cdc8b92 502 select NEED_MACH_MEMORY_H
13a5045d 503 select NEED_RET_TO_USER
3b938be6
RK
504 help
505 Support for Intel's IOP13XX (XScale) family of processors.
506
3f7e5815
LB
507config ARCH_IOP32X
508 bool "IOP32x-based"
a4f7e763 509 depends on MMU
c750815e 510 select CPU_XSCALE
c334bc15 511 select NEED_MACH_IO_H
13a5045d 512 select NEED_RET_TO_USER
7ae1f7ec 513 select PLAT_IOP
f7e68bbf 514 select PCI
bb2b180c 515 select ARCH_REQUIRE_GPIOLIB
f999b8bd 516 help
3f7e5815
LB
517 Support for Intel's 80219 and IOP32X (XScale) family of
518 processors.
519
520config ARCH_IOP33X
521 bool "IOP33x-based"
522 depends on MMU
c750815e 523 select CPU_XSCALE
c334bc15 524 select NEED_MACH_IO_H
13a5045d 525 select NEED_RET_TO_USER
7ae1f7ec 526 select PLAT_IOP
3f7e5815 527 select PCI
bb2b180c 528 select ARCH_REQUIRE_GPIOLIB
3f7e5815
LB
529 help
530 Support for Intel's IOP33X (XScale) family of processors.
1da177e4 531
3b938be6
RK
532config ARCH_IXP23XX
533 bool "IXP23XX-based"
a4f7e763 534 depends on MMU
c750815e 535 select CPU_XSC3
3b938be6 536 select PCI
5cfc8ee0 537 select ARCH_USES_GETTIMEOFFSET
c334bc15 538 select NEED_MACH_IO_H
0cdc8b92 539 select NEED_MACH_MEMORY_H
f999b8bd 540 help
3b938be6 541 Support for Intel's IXP23xx (XScale) family of processors.
1da177e4
LT
542
543config ARCH_IXP2000
544 bool "IXP2400/2800-based"
a4f7e763 545 depends on MMU
c750815e 546 select CPU_XSCALE
f7e68bbf 547 select PCI
5cfc8ee0 548 select ARCH_USES_GETTIMEOFFSET
c334bc15 549 select NEED_MACH_IO_H
0cdc8b92 550 select NEED_MACH_MEMORY_H
f999b8bd
MM
551 help
552 Support for Intel's IXP2400/2800 (XScale) family of processors.
1da177e4 553
3b938be6
RK
554config ARCH_IXP4XX
555 bool "IXP4xx-based"
a4f7e763 556 depends on MMU
58af4a24 557 select ARCH_HAS_DMA_SET_COHERENT_MASK
234b6ced 558 select CLKSRC_MMIO
c750815e 559 select CPU_XSCALE
8858e9af 560 select GENERIC_GPIO
3b938be6 561 select GENERIC_CLOCKEVENTS
0b05da72 562 select MIGHT_HAVE_PCI
c334bc15 563 select NEED_MACH_IO_H
485bdde7 564 select DMABOUNCE if PCI
c4713074 565 help
3b938be6 566 Support for Intel's IXP4XX (XScale) family of processors.
c4713074 567
edabd38e
SB
568config ARCH_DOVE
569 bool "Marvell Dove"
7b769bb3 570 select CPU_V7
edabd38e 571 select PCI
edabd38e 572 select ARCH_REQUIRE_GPIOLIB
edabd38e 573 select GENERIC_CLOCKEVENTS
c334bc15 574 select NEED_MACH_IO_H
edabd38e
SB
575 select PLAT_ORION
576 help
577 Support for the Marvell Dove SoC 88AP510
578
651c74c7
SB
579config ARCH_KIRKWOOD
580 bool "Marvell Kirkwood"
c750815e 581 select CPU_FEROCEON
651c74c7 582 select PCI
a8865655 583 select ARCH_REQUIRE_GPIOLIB
651c74c7 584 select GENERIC_CLOCKEVENTS
c334bc15 585 select NEED_MACH_IO_H
651c74c7
SB
586 select PLAT_ORION
587 help
588 Support for the following Marvell Kirkwood series SoCs:
589 88F6180, 88F6192 and 88F6281.
590
40805949
KW
591config ARCH_LPC32XX
592 bool "NXP LPC32XX"
234b6ced 593 select CLKSRC_MMIO
40805949
KW
594 select CPU_ARM926T
595 select ARCH_REQUIRE_GPIOLIB
596 select HAVE_IDE
597 select ARM_AMBA
598 select USB_ARCH_HAS_OHCI
6d803ba7 599 select CLKDEV_LOOKUP
40805949
KW
600 select GENERIC_CLOCKEVENTS
601 help
602 Support for the NXP LPC32XX family of processors
603
794d15b2
SS
604config ARCH_MV78XX0
605 bool "Marvell MV78xx0"
c750815e 606 select CPU_FEROCEON
794d15b2 607 select PCI
a8865655 608 select ARCH_REQUIRE_GPIOLIB
794d15b2 609 select GENERIC_CLOCKEVENTS
c334bc15 610 select NEED_MACH_IO_H
794d15b2
SS
611 select PLAT_ORION
612 help
613 Support for the following Marvell MV78xx0 series SoCs:
614 MV781x0, MV782x0.
615
9dd0b194 616config ARCH_ORION5X
585cf175
TP
617 bool "Marvell Orion"
618 depends on MMU
c750815e 619 select CPU_FEROCEON
038ee083 620 select PCI
a8865655 621 select ARCH_REQUIRE_GPIOLIB
51cbff1d 622 select GENERIC_CLOCKEVENTS
69b02f6a 623 select PLAT_ORION
585cf175 624 help
9dd0b194 625 Support for the following Marvell Orion 5x series SoCs:
d2b2a6bb 626 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
d323ade1 627 Orion-2 (5281), Orion-1-90 (6183).
585cf175 628
788c9700 629config ARCH_MMP
2f7e8fae 630 bool "Marvell PXA168/910/MMP2"
788c9700 631 depends on MMU
788c9700 632 select ARCH_REQUIRE_GPIOLIB
6d803ba7 633 select CLKDEV_LOOKUP
788c9700 634 select GENERIC_CLOCKEVENTS
157d2644 635 select GPIO_PXA
788c9700
RK
636 select TICK_ONESHOT
637 select PLAT_PXA
0bd86961 638 select SPARSE_IRQ
3c7241bd 639 select GENERIC_ALLOCATOR
788c9700 640 help
2f7e8fae 641 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
788c9700
RK
642
643config ARCH_KS8695
644 bool "Micrel/Kendin KS8695"
645 select CPU_ARM922T
98830bc9 646 select ARCH_REQUIRE_GPIOLIB
5cfc8ee0 647 select ARCH_USES_GETTIMEOFFSET
0cdc8b92 648 select NEED_MACH_MEMORY_H
788c9700
RK
649 help
650 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
651 System-on-Chip devices.
652
788c9700
RK
653config ARCH_W90X900
654 bool "Nuvoton W90X900 CPU"
655 select CPU_ARM926T
c52d3d68 656 select ARCH_REQUIRE_GPIOLIB
6d803ba7 657 select CLKDEV_LOOKUP
6fa5d5f7 658 select CLKSRC_MMIO
58b5369e 659 select GENERIC_CLOCKEVENTS
788c9700 660 help
a8bc4ead 661 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
662 At present, the w90x900 has been renamed nuc900, regarding
663 the ARM series product line, you can login the following
664 link address to know more.
665
666 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
667 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
788c9700 668
c5f80065
EG
669config ARCH_TEGRA
670 bool "NVIDIA Tegra"
4073723a 671 select CLKDEV_LOOKUP
234b6ced 672 select CLKSRC_MMIO
c5f80065
EG
673 select GENERIC_CLOCKEVENTS
674 select GENERIC_GPIO
675 select HAVE_CLK
3b55658a 676 select HAVE_SMP
ce5ea9f3 677 select MIGHT_HAVE_CACHE_L2X0
c334bc15 678 select NEED_MACH_IO_H if PCI
7056d423 679 select ARCH_HAS_CPUFREQ
c5f80065
EG
680 help
681 This enables support for NVIDIA Tegra based systems (Tegra APX,
682 Tegra 6xx and Tegra 2 series).
683
af75655c
JI
684config ARCH_PICOXCELL
685 bool "Picochip picoXcell"
686 select ARCH_REQUIRE_GPIOLIB
687 select ARM_PATCH_PHYS_VIRT
688 select ARM_VIC
689 select CPU_V6K
690 select DW_APB_TIMER
691 select GENERIC_CLOCKEVENTS
692 select GENERIC_GPIO
af75655c
JI
693 select HAVE_TCM
694 select NO_IOPORT
98e27a5c 695 select SPARSE_IRQ
af75655c
JI
696 select USE_OF
697 help
698 This enables support for systems based on the Picochip picoXcell
699 family of Femtocell devices. The picoxcell support requires device tree
700 for all boards.
701
4af6fee1
DS
702config ARCH_PNX4008
703 bool "Philips Nexperia PNX4008 Mobile"
c750815e 704 select CPU_ARM926T
6d803ba7 705 select CLKDEV_LOOKUP
5cfc8ee0 706 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
707 help
708 This enables support for Philips PNX4008 mobile platform.
709
1da177e4 710config ARCH_PXA
2c8086a5 711 bool "PXA2xx/PXA3xx-based"
a4f7e763 712 depends on MMU
034d2f5a 713 select ARCH_MTD_XIP
89c52ed4 714 select ARCH_HAS_CPUFREQ
6d803ba7 715 select CLKDEV_LOOKUP
234b6ced 716 select CLKSRC_MMIO
7444a72e 717 select ARCH_REQUIRE_GPIOLIB
981d0f39 718 select GENERIC_CLOCKEVENTS
157d2644 719 select GPIO_PXA
a88264c2 720 select TICK_ONESHOT
bd5ce433 721 select PLAT_PXA
6ac6b817 722 select SPARSE_IRQ
4e234cc0 723 select AUTO_ZRELADDR
8a97ae2f 724 select MULTI_IRQ_HANDLER
15e0d9e3 725 select ARM_CPU_SUSPEND if PM
d0ee9f40 726 select HAVE_IDE
f999b8bd 727 help
2c8086a5 728 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
1da177e4 729
788c9700
RK
730config ARCH_MSM
731 bool "Qualcomm MSM"
4b536b8d 732 select HAVE_CLK
49cbe786 733 select GENERIC_CLOCKEVENTS
923a081c 734 select ARCH_REQUIRE_GPIOLIB
bd32344a 735 select CLKDEV_LOOKUP
49cbe786 736 help
4b53eb4f
DW
737 Support for Qualcomm MSM/QSD based systems. This runs on the
738 apps processor of the MSM/QSD and depends on a shared memory
739 interface to the modem processor which runs the baseband
740 stack and controls some vital subsystems
741 (clock and power control, etc).
49cbe786 742
c793c1b0 743config ARCH_SHMOBILE
6d72ad35
PM
744 bool "Renesas SH-Mobile / R-Mobile"
745 select HAVE_CLK
5e93c6b4 746 select CLKDEV_LOOKUP
aa3831cf 747 select HAVE_MACH_CLKDEV
3b55658a 748 select HAVE_SMP
6d72ad35 749 select GENERIC_CLOCKEVENTS
ce5ea9f3 750 select MIGHT_HAVE_CACHE_L2X0
6d72ad35
PM
751 select NO_IOPORT
752 select SPARSE_IRQ
60f1435c 753 select MULTI_IRQ_HANDLER
e3e01091 754 select PM_GENERIC_DOMAINS if PM
0cdc8b92 755 select NEED_MACH_MEMORY_H
c793c1b0 756 help
6d72ad35 757 Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
c793c1b0 758
1da177e4
LT
759config ARCH_RPC
760 bool "RiscPC"
761 select ARCH_ACORN
762 select FIQ
a08b6b79 763 select ARCH_MAY_HAVE_PC_FDC
341eb781 764 select HAVE_PATA_PLATFORM
065909b9 765 select ISA_DMA_API
5ea81769 766 select NO_IOPORT
07f841b7 767 select ARCH_SPARSEMEM_ENABLE
5cfc8ee0 768 select ARCH_USES_GETTIMEOFFSET
d0ee9f40 769 select HAVE_IDE
c334bc15 770 select NEED_MACH_IO_H
0cdc8b92 771 select NEED_MACH_MEMORY_H
1da177e4
LT
772 help
773 On the Acorn Risc-PC, Linux can support the internal IDE disk and
774 CD-ROM interface, serial and parallel port, and the floppy drive.
775
776config ARCH_SA1100
777 bool "SA1100-based"
234b6ced 778 select CLKSRC_MMIO
c750815e 779 select CPU_SA1100
f7e68bbf 780 select ISA
05944d74 781 select ARCH_SPARSEMEM_ENABLE
034d2f5a 782 select ARCH_MTD_XIP
89c52ed4 783 select ARCH_HAS_CPUFREQ
1937f5b9 784 select CPU_FREQ
3e238be2 785 select GENERIC_CLOCKEVENTS
4a8f8340 786 select CLKDEV_LOOKUP
3e238be2 787 select TICK_ONESHOT
7444a72e 788 select ARCH_REQUIRE_GPIOLIB
d0ee9f40 789 select HAVE_IDE
0cdc8b92 790 select NEED_MACH_MEMORY_H
375dec92 791 select SPARSE_IRQ
f999b8bd
MM
792 help
793 Support for StrongARM 11x0 based boards.
1da177e4 794
b130d5c2
KK
795config ARCH_S3C24XX
796 bool "Samsung S3C24XX SoCs"
0a938b97 797 select GENERIC_GPIO
9d56c02a 798 select ARCH_HAS_CPUFREQ
9483a578 799 select HAVE_CLK
e83626f2 800 select CLKDEV_LOOKUP
5cfc8ee0 801 select ARCH_USES_GETTIMEOFFSET
20676c15 802 select HAVE_S3C2410_I2C if I2C
b130d5c2
KK
803 select HAVE_S3C_RTC if RTC_CLASS
804 select HAVE_S3C2410_WATCHDOG if WATCHDOG
c334bc15 805 select NEED_MACH_IO_H
1da177e4 806 help
b130d5c2
KK
807 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
808 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
809 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
810 Samsung SMDK2410 development board (and derivatives).
63b1f51b 811
a08ab637
BD
812config ARCH_S3C64XX
813 bool "Samsung S3C64XX"
89f1fa08 814 select PLAT_SAMSUNG
89f0ce72 815 select CPU_V6
89f0ce72 816 select ARM_VIC
a08ab637 817 select HAVE_CLK
6700397a 818 select HAVE_TCM
226e85f4 819 select CLKDEV_LOOKUP
89f0ce72 820 select NO_IOPORT
5cfc8ee0 821 select ARCH_USES_GETTIMEOFFSET
89c52ed4 822 select ARCH_HAS_CPUFREQ
89f0ce72
BD
823 select ARCH_REQUIRE_GPIOLIB
824 select SAMSUNG_CLKSRC
825 select SAMSUNG_IRQ_VIC_TIMER
89f0ce72 826 select S3C_GPIO_TRACK
89f0ce72
BD
827 select S3C_DEV_NAND
828 select USB_ARCH_HAS_OHCI
829 select SAMSUNG_GPIOLIB_4BIT
20676c15 830 select HAVE_S3C2410_I2C if I2C
c39d8d55 831 select HAVE_S3C2410_WATCHDOG if WATCHDOG
a08ab637
BD
832 help
833 Samsung S3C64XX series based systems
834
49b7a491
KK
835config ARCH_S5P64X0
836 bool "Samsung S5P6440 S5P6450"
c4ffccdd
KK
837 select CPU_V6
838 select GENERIC_GPIO
839 select HAVE_CLK
d8b22d25 840 select CLKDEV_LOOKUP
0665ccc4 841 select CLKSRC_MMIO
c39d8d55 842 select HAVE_S3C2410_WATCHDOG if WATCHDOG
9e65bbf2 843 select GENERIC_CLOCKEVENTS
20676c15 844 select HAVE_S3C2410_I2C if I2C
754961a8 845 select HAVE_S3C_RTC if RTC_CLASS
c4ffccdd 846 help
49b7a491
KK
847 Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
848 SMDK6450.
c4ffccdd 849
acc84707
MS
850config ARCH_S5PC100
851 bool "Samsung S5PC100"
5a7652f2
BM
852 select GENERIC_GPIO
853 select HAVE_CLK
29e8eb0f 854 select CLKDEV_LOOKUP
5a7652f2 855 select CPU_V7
925c68cd 856 select ARCH_USES_GETTIMEOFFSET
20676c15 857 select HAVE_S3C2410_I2C if I2C
754961a8 858 select HAVE_S3C_RTC if RTC_CLASS
c39d8d55 859 select HAVE_S3C2410_WATCHDOG if WATCHDOG
5a7652f2 860 help
acc84707 861 Samsung S5PC100 series based systems
5a7652f2 862
170f4e42
KK
863config ARCH_S5PV210
864 bool "Samsung S5PV210/S5PC110"
865 select CPU_V7
eecb6a84 866 select ARCH_SPARSEMEM_ENABLE
0f75a96b 867 select ARCH_HAS_HOLES_MEMORYMODEL
170f4e42
KK
868 select GENERIC_GPIO
869 select HAVE_CLK
b2a9dd46 870 select CLKDEV_LOOKUP
0665ccc4 871 select CLKSRC_MMIO
d8144aea 872 select ARCH_HAS_CPUFREQ
9e65bbf2 873 select GENERIC_CLOCKEVENTS
20676c15 874 select HAVE_S3C2410_I2C if I2C
754961a8 875 select HAVE_S3C_RTC if RTC_CLASS
c39d8d55 876 select HAVE_S3C2410_WATCHDOG if WATCHDOG
0cdc8b92 877 select NEED_MACH_MEMORY_H
170f4e42
KK
878 help
879 Samsung S5PV210/S5PC110 series based systems
880
83014579
KK
881config ARCH_EXYNOS
882 bool "SAMSUNG EXYNOS"
cc0e72b8 883 select CPU_V7
f567fa6f 884 select ARCH_SPARSEMEM_ENABLE
0f75a96b 885 select ARCH_HAS_HOLES_MEMORYMODEL
cc0e72b8
CY
886 select GENERIC_GPIO
887 select HAVE_CLK
badc4f2d 888 select CLKDEV_LOOKUP
b333fb16 889 select ARCH_HAS_CPUFREQ
cc0e72b8 890 select GENERIC_CLOCKEVENTS
754961a8 891 select HAVE_S3C_RTC if RTC_CLASS
20676c15 892 select HAVE_S3C2410_I2C if I2C
c39d8d55 893 select HAVE_S3C2410_WATCHDOG if WATCHDOG
0cdc8b92 894 select NEED_MACH_MEMORY_H
cc0e72b8 895 help
83014579 896 Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5)
cc0e72b8 897
1da177e4
LT
898config ARCH_SHARK
899 bool "Shark"
c750815e 900 select CPU_SA110
f7e68bbf
RK
901 select ISA
902 select ISA_DMA
3bca103a 903 select ZONE_DMA
f7e68bbf 904 select PCI
5cfc8ee0 905 select ARCH_USES_GETTIMEOFFSET
0cdc8b92 906 select NEED_MACH_MEMORY_H
c334bc15 907 select NEED_MACH_IO_H
f999b8bd
MM
908 help
909 Support for the StrongARM based Digital DNARD machine, also known
910 as "Shark" (<http://www.shark-linux.de/shark.html>).
1da177e4 911
d98aac75
LW
912config ARCH_U300
913 bool "ST-Ericsson U300 Series"
914 depends on MMU
234b6ced 915 select CLKSRC_MMIO
d98aac75 916 select CPU_ARM926T
bc581770 917 select HAVE_TCM
d98aac75 918 select ARM_AMBA
5485c1e0 919 select ARM_PATCH_PHYS_VIRT
d98aac75 920 select ARM_VIC
d98aac75 921 select GENERIC_CLOCKEVENTS
6d803ba7 922 select CLKDEV_LOOKUP
aa3831cf 923 select HAVE_MACH_CLKDEV
d98aac75 924 select GENERIC_GPIO
cc890cd7 925 select ARCH_REQUIRE_GPIOLIB
d98aac75
LW
926 help
927 Support for ST-Ericsson U300 series mobile platforms.
928
ccf50e23
RK
929config ARCH_U8500
930 bool "ST-Ericsson U8500 Series"
67ae14fc 931 depends on MMU
ccf50e23
RK
932 select CPU_V7
933 select ARM_AMBA
ccf50e23 934 select GENERIC_CLOCKEVENTS
6d803ba7 935 select CLKDEV_LOOKUP
94bdc0e2 936 select ARCH_REQUIRE_GPIOLIB
7c1a70e9 937 select ARCH_HAS_CPUFREQ
3b55658a 938 select HAVE_SMP
ce5ea9f3 939 select MIGHT_HAVE_CACHE_L2X0
ccf50e23
RK
940 help
941 Support for ST-Ericsson's Ux500 architecture
942
943config ARCH_NOMADIK
944 bool "STMicroelectronics Nomadik"
945 select ARM_AMBA
946 select ARM_VIC
947 select CPU_ARM926T
6d803ba7 948 select CLKDEV_LOOKUP
ccf50e23 949 select GENERIC_CLOCKEVENTS
ce5ea9f3 950 select MIGHT_HAVE_CACHE_L2X0
ccf50e23
RK
951 select ARCH_REQUIRE_GPIOLIB
952 help
953 Support for the Nomadik platform by ST-Ericsson
954
7c6337e2
KH
955config ARCH_DAVINCI
956 bool "TI DaVinci"
7c6337e2 957 select GENERIC_CLOCKEVENTS
dce1115b 958 select ARCH_REQUIRE_GPIOLIB
3bca103a 959 select ZONE_DMA
9232fcc9 960 select HAVE_IDE
6d803ba7 961 select CLKDEV_LOOKUP
20e9969b 962 select GENERIC_ALLOCATOR
dc7ad3b3 963 select GENERIC_IRQ_CHIP
ae88e05a 964 select ARCH_HAS_HOLES_MEMORYMODEL
7c6337e2
KH
965 help
966 Support for TI's DaVinci platform.
967
3b938be6
RK
968config ARCH_OMAP
969 bool "TI OMAP"
9483a578 970 select HAVE_CLK
7444a72e 971 select ARCH_REQUIRE_GPIOLIB
89c52ed4 972 select ARCH_HAS_CPUFREQ
354a183f 973 select CLKSRC_MMIO
06cad098 974 select GENERIC_CLOCKEVENTS
9af915da 975 select ARCH_HAS_HOLES_MEMORYMODEL
3b938be6 976 help
6e457bb0 977 Support for TI's OMAP platform (OMAP1/2/3/4).
3b938be6 978
cee37e50 979config PLAT_SPEAR
980 bool "ST SPEAr"
981 select ARM_AMBA
982 select ARCH_REQUIRE_GPIOLIB
6d803ba7 983 select CLKDEV_LOOKUP
d6e15d78 984 select CLKSRC_MMIO
cee37e50 985 select GENERIC_CLOCKEVENTS
cee37e50 986 select HAVE_CLK
987 help
988 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
989
21f47fbc
AC
990config ARCH_VT8500
991 bool "VIA/WonderMedia 85xx"
992 select CPU_ARM926T
993 select GENERIC_GPIO
994 select ARCH_HAS_CPUFREQ
995 select GENERIC_CLOCKEVENTS
996 select ARCH_REQUIRE_GPIOLIB
997 select HAVE_PWM
998 help
999 Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
02c981c0 1000
b85a3ef4
JL
1001config ARCH_ZYNQ
1002 bool "Xilinx Zynq ARM Cortex A9 Platform"
02c981c0 1003 select CPU_V7
02c981c0
BD
1004 select GENERIC_CLOCKEVENTS
1005 select CLKDEV_LOOKUP
b85a3ef4
JL
1006 select ARM_GIC
1007 select ARM_AMBA
1008 select ICST
ce5ea9f3 1009 select MIGHT_HAVE_CACHE_L2X0
02c981c0 1010 select USE_OF
02c981c0 1011 help
b85a3ef4 1012 Support for Xilinx Zynq ARM Cortex A9 Platform
1da177e4
LT
1013endchoice
1014
ccf50e23
RK
1015#
1016# This is sorted alphabetically by mach-* pathname. However, plat-*
1017# Kconfigs may be included either alphabetically (according to the
1018# plat- suffix) or along side the corresponding mach-* source.
1019#
95b8f20f
RK
1020source "arch/arm/mach-at91/Kconfig"
1021
1022source "arch/arm/mach-bcmring/Kconfig"
1023
1da177e4
LT
1024source "arch/arm/mach-clps711x/Kconfig"
1025
d94f944e
AV
1026source "arch/arm/mach-cns3xxx/Kconfig"
1027
95b8f20f
RK
1028source "arch/arm/mach-davinci/Kconfig"
1029
1030source "arch/arm/mach-dove/Kconfig"
1031
e7736d47
LB
1032source "arch/arm/mach-ep93xx/Kconfig"
1033
1da177e4
LT
1034source "arch/arm/mach-footbridge/Kconfig"
1035
59d3a193
PZ
1036source "arch/arm/mach-gemini/Kconfig"
1037
95b8f20f
RK
1038source "arch/arm/mach-h720x/Kconfig"
1039
1da177e4
LT
1040source "arch/arm/mach-integrator/Kconfig"
1041
3f7e5815
LB
1042source "arch/arm/mach-iop32x/Kconfig"
1043
1044source "arch/arm/mach-iop33x/Kconfig"
1da177e4 1045
285f5fa7
DW
1046source "arch/arm/mach-iop13xx/Kconfig"
1047
1da177e4
LT
1048source "arch/arm/mach-ixp4xx/Kconfig"
1049
1050source "arch/arm/mach-ixp2000/Kconfig"
1051
c4713074
LB
1052source "arch/arm/mach-ixp23xx/Kconfig"
1053
95b8f20f
RK
1054source "arch/arm/mach-kirkwood/Kconfig"
1055
1056source "arch/arm/mach-ks8695/Kconfig"
1057
40805949
KW
1058source "arch/arm/mach-lpc32xx/Kconfig"
1059
95b8f20f
RK
1060source "arch/arm/mach-msm/Kconfig"
1061
794d15b2
SS
1062source "arch/arm/mach-mv78xx0/Kconfig"
1063
95b8f20f 1064source "arch/arm/plat-mxc/Kconfig"
1da177e4 1065
1d3f33d5
SG
1066source "arch/arm/mach-mxs/Kconfig"
1067
95b8f20f 1068source "arch/arm/mach-netx/Kconfig"
49cbe786 1069
95b8f20f
RK
1070source "arch/arm/mach-nomadik/Kconfig"
1071source "arch/arm/plat-nomadik/Kconfig"
1072
d48af15e
TL
1073source "arch/arm/plat-omap/Kconfig"
1074
1075source "arch/arm/mach-omap1/Kconfig"
1da177e4 1076
1dbae815
TL
1077source "arch/arm/mach-omap2/Kconfig"
1078
9dd0b194 1079source "arch/arm/mach-orion5x/Kconfig"
585cf175 1080
95b8f20f
RK
1081source "arch/arm/mach-pxa/Kconfig"
1082source "arch/arm/plat-pxa/Kconfig"
585cf175 1083
95b8f20f
RK
1084source "arch/arm/mach-mmp/Kconfig"
1085
1086source "arch/arm/mach-realview/Kconfig"
1087
1088source "arch/arm/mach-sa1100/Kconfig"
edabd38e 1089
cf383678 1090source "arch/arm/plat-samsung/Kconfig"
a21765a7 1091source "arch/arm/plat-s3c24xx/Kconfig"
c4ffccdd 1092source "arch/arm/plat-s5p/Kconfig"
a21765a7 1093
cee37e50 1094source "arch/arm/plat-spear/Kconfig"
a21765a7 1095
85fd6d63 1096source "arch/arm/mach-s3c24xx/Kconfig"
b130d5c2 1097if ARCH_S3C24XX
a21765a7
BD
1098source "arch/arm/mach-s3c2412/Kconfig"
1099source "arch/arm/mach-s3c2440/Kconfig"
a21765a7 1100endif
1da177e4 1101
a08ab637 1102if ARCH_S3C64XX
431107ea 1103source "arch/arm/mach-s3c64xx/Kconfig"
a08ab637
BD
1104endif
1105
49b7a491 1106source "arch/arm/mach-s5p64x0/Kconfig"
c4ffccdd 1107
5a7652f2 1108source "arch/arm/mach-s5pc100/Kconfig"
5a7652f2 1109
170f4e42
KK
1110source "arch/arm/mach-s5pv210/Kconfig"
1111
83014579 1112source "arch/arm/mach-exynos/Kconfig"
cc0e72b8 1113
882d01f9 1114source "arch/arm/mach-shmobile/Kconfig"
52c543f9 1115
c5f80065
EG
1116source "arch/arm/mach-tegra/Kconfig"
1117
95b8f20f 1118source "arch/arm/mach-u300/Kconfig"
1da177e4 1119
95b8f20f 1120source "arch/arm/mach-ux500/Kconfig"
1da177e4
LT
1121
1122source "arch/arm/mach-versatile/Kconfig"
1123
ceade897 1124source "arch/arm/mach-vexpress/Kconfig"
420c34e4 1125source "arch/arm/plat-versatile/Kconfig"
ceade897 1126
21f47fbc
AC
1127source "arch/arm/mach-vt8500/Kconfig"
1128
7ec80ddf 1129source "arch/arm/mach-w90x900/Kconfig"
1130
1da177e4
LT
1131# Definitions to make life easier
1132config ARCH_ACORN
1133 bool
1134
7ae1f7ec
LB
1135config PLAT_IOP
1136 bool
469d3044 1137 select GENERIC_CLOCKEVENTS
7ae1f7ec 1138
69b02f6a
LB
1139config PLAT_ORION
1140 bool
bfe45e0b 1141 select CLKSRC_MMIO
dc7ad3b3 1142 select GENERIC_IRQ_CHIP
69b02f6a 1143
bd5ce433
EM
1144config PLAT_PXA
1145 bool
1146
f4b8b319
RK
1147config PLAT_VERSATILE
1148 bool
1149
e3887714
RK
1150config ARM_TIMER_SP804
1151 bool
bfe45e0b 1152 select CLKSRC_MMIO
a7bf6162 1153 select HAVE_SCHED_CLOCK
e3887714 1154
1da177e4
LT
1155source arch/arm/mm/Kconfig
1156
958cab0f
RK
1157config ARM_NR_BANKS
1158 int
1159 default 16 if ARCH_EP93XX
1160 default 8
1161
afe4b25e
LB
1162config IWMMXT
1163 bool "Enable iWMMXt support"
ef6c8445
HZ
1164 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
1165 default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
afe4b25e
LB
1166 help
1167 Enable support for iWMMXt context switching at run time if
1168 running on a CPU that supports it.
1169
1da177e4
LT
1170config XSCALE_PMU
1171 bool
bfc994b5 1172 depends on CPU_XSCALE
1da177e4
LT
1173 default y
1174
0f4f0672 1175config CPU_HAS_PMU
e399b1a4 1176 depends on (CPU_V6 || CPU_V6K || CPU_V7 || XSCALE_PMU) && \
8954bb0d 1177 (!ARCH_OMAP3 || OMAP3_EMU)
0f4f0672
JI
1178 default y
1179 bool
1180
52108641 1181config MULTI_IRQ_HANDLER
1182 bool
1183 help
1184 Allow each machine to specify it's own IRQ handler at run time.
1185
3b93e7b0
HC
1186if !MMU
1187source "arch/arm/Kconfig-nommu"
1188endif
1189
f0c4b8d6
WD
1190config ARM_ERRATA_326103
1191 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1192 depends on CPU_V6
1193 help
1194 Executing a SWP instruction to read-only memory does not set bit 11
1195 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1196 treat the access as a read, preventing a COW from occurring and
1197 causing the faulting task to livelock.
1198
9cba3ccc
CM
1199config ARM_ERRATA_411920
1200 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
e399b1a4 1201 depends on CPU_V6 || CPU_V6K
9cba3ccc
CM
1202 help
1203 Invalidation of the Instruction Cache operation can
1204 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1205 It does not affect the MPCore. This option enables the ARM Ltd.
1206 recommended workaround.
1207
7ce236fc
CM
1208config ARM_ERRATA_430973
1209 bool "ARM errata: Stale prediction on replaced interworking branch"
1210 depends on CPU_V7
1211 help
1212 This option enables the workaround for the 430973 Cortex-A8
1213 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1214 interworking branch is replaced with another code sequence at the
1215 same virtual address, whether due to self-modifying code or virtual
1216 to physical address re-mapping, Cortex-A8 does not recover from the
1217 stale interworking branch prediction. This results in Cortex-A8
1218 executing the new code sequence in the incorrect ARM or Thumb state.
1219 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1220 and also flushes the branch target cache at every context switch.
1221 Note that setting specific bits in the ACTLR register may not be
1222 available in non-secure mode.
1223
855c551f
CM
1224config ARM_ERRATA_458693
1225 bool "ARM errata: Processor deadlock when a false hazard is created"
1226 depends on CPU_V7
1227 help
1228 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1229 erratum. For very specific sequences of memory operations, it is
1230 possible for a hazard condition intended for a cache line to instead
1231 be incorrectly associated with a different cache line. This false
1232 hazard might then cause a processor deadlock. The workaround enables
1233 the L1 caching of the NEON accesses and disables the PLD instruction
1234 in the ACTLR register. Note that setting specific bits in the ACTLR
1235 register may not be available in non-secure mode.
1236
0516e464
CM
1237config ARM_ERRATA_460075
1238 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1239 depends on CPU_V7
1240 help
1241 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1242 erratum. Any asynchronous access to the L2 cache may encounter a
1243 situation in which recent store transactions to the L2 cache are lost
1244 and overwritten with stale memory contents from external memory. The
1245 workaround disables the write-allocate mode for the L2 cache via the
1246 ACTLR register. Note that setting specific bits in the ACTLR register
1247 may not be available in non-secure mode.
1248
9f05027c
WD
1249config ARM_ERRATA_742230
1250 bool "ARM errata: DMB operation may be faulty"
1251 depends on CPU_V7 && SMP
1252 help
1253 This option enables the workaround for the 742230 Cortex-A9
1254 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1255 between two write operations may not ensure the correct visibility
1256 ordering of the two writes. This workaround sets a specific bit in
1257 the diagnostic register of the Cortex-A9 which causes the DMB
1258 instruction to behave as a DSB, ensuring the correct behaviour of
1259 the two writes.
1260
a672e99b
WD
1261config ARM_ERRATA_742231
1262 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1263 depends on CPU_V7 && SMP
1264 help
1265 This option enables the workaround for the 742231 Cortex-A9
1266 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1267 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1268 accessing some data located in the same cache line, may get corrupted
1269 data due to bad handling of the address hazard when the line gets
1270 replaced from one of the CPUs at the same time as another CPU is
1271 accessing it. This workaround sets specific bits in the diagnostic
1272 register of the Cortex-A9 which reduces the linefill issuing
1273 capabilities of the processor.
1274
9e65582a 1275config PL310_ERRATA_588369
fa0ce403 1276 bool "PL310 errata: Clean & Invalidate maintenance operations do not invalidate clean lines"
2839e06c 1277 depends on CACHE_L2X0
9e65582a
SS
1278 help
1279 The PL310 L2 cache controller implements three types of Clean &
1280 Invalidate maintenance operations: by Physical Address
1281 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1282 They are architecturally defined to behave as the execution of a
1283 clean operation followed immediately by an invalidate operation,
1284 both performing to the same memory location. This functionality
1285 is not correctly implemented in PL310 as clean lines are not
2839e06c 1286 invalidated as a result of these operations.
cdf357f1
WD
1287
1288config ARM_ERRATA_720789
1289 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
e66dc745 1290 depends on CPU_V7
cdf357f1
WD
1291 help
1292 This option enables the workaround for the 720789 Cortex-A9 (prior to
1293 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1294 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1295 As a consequence of this erratum, some TLB entries which should be
1296 invalidated are not, resulting in an incoherency in the system page
1297 tables. The workaround changes the TLB flushing routines to invalidate
1298 entries regardless of the ASID.
475d92fc 1299
1f0090a1 1300config PL310_ERRATA_727915
fa0ce403 1301 bool "PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption"
1f0090a1
RK
1302 depends on CACHE_L2X0
1303 help
1304 PL310 implements the Clean & Invalidate by Way L2 cache maintenance
1305 operation (offset 0x7FC). This operation runs in background so that
1306 PL310 can handle normal accesses while it is in progress. Under very
1307 rare circumstances, due to this erratum, write data can be lost when
1308 PL310 treats a cacheable write transaction during a Clean &
1309 Invalidate by Way operation.
1310
475d92fc
WD
1311config ARM_ERRATA_743622
1312 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1313 depends on CPU_V7
1314 help
1315 This option enables the workaround for the 743622 Cortex-A9
efbc74ac 1316 (r2p*) erratum. Under very rare conditions, a faulty
475d92fc
WD
1317 optimisation in the Cortex-A9 Store Buffer may lead to data
1318 corruption. This workaround sets a specific bit in the diagnostic
1319 register of the Cortex-A9 which disables the Store Buffer
1320 optimisation, preventing the defect from occurring. This has no
1321 visible impact on the overall performance or power consumption of the
1322 processor.
1323
9a27c27c
WD
1324config ARM_ERRATA_751472
1325 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
ba90c516 1326 depends on CPU_V7
9a27c27c
WD
1327 help
1328 This option enables the workaround for the 751472 Cortex-A9 (prior
1329 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1330 completion of a following broadcasted operation if the second
1331 operation is received by a CPU before the ICIALLUIS has completed,
1332 potentially leading to corrupted entries in the cache or TLB.
1333
fa0ce403
WD
1334config PL310_ERRATA_753970
1335 bool "PL310 errata: cache sync operation may be faulty"
885028e4
SK
1336 depends on CACHE_PL310
1337 help
1338 This option enables the workaround for the 753970 PL310 (r3p0) erratum.
1339
1340 Under some condition the effect of cache sync operation on
1341 the store buffer still remains when the operation completes.
1342 This means that the store buffer is always asked to drain and
1343 this prevents it from merging any further writes. The workaround
1344 is to replace the normal offset of cache sync operation (0x730)
1345 by another offset targeting an unmapped PL310 register 0x740.
1346 This has the same effect as the cache sync operation: store buffer
1347 drain and waiting for all buffers empty.
1348
fcbdc5fe
WD
1349config ARM_ERRATA_754322
1350 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1351 depends on CPU_V7
1352 help
1353 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1354 r3p*) erratum. A speculative memory access may cause a page table walk
1355 which starts prior to an ASID switch but completes afterwards. This
1356 can populate the micro-TLB with a stale entry which may be hit with
1357 the new ASID. This workaround places two dsb instructions in the mm
1358 switching code so that no page table walks can cross the ASID switch.
1359
5dab26af
WD
1360config ARM_ERRATA_754327
1361 bool "ARM errata: no automatic Store Buffer drain"
1362 depends on CPU_V7 && SMP
1363 help
1364 This option enables the workaround for the 754327 Cortex-A9 (prior to
1365 r2p0) erratum. The Store Buffer does not have any automatic draining
1366 mechanism and therefore a livelock may occur if an external agent
1367 continuously polls a memory location waiting to observe an update.
1368 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1369 written polling loops from denying visibility of updates to memory.
1370
145e10e1
CM
1371config ARM_ERRATA_364296
1372 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
1373 depends on CPU_V6 && !SMP
1374 help
1375 This options enables the workaround for the 364296 ARM1136
1376 r0p2 erratum (possible cache data corruption with
1377 hit-under-miss enabled). It sets the undocumented bit 31 in
1378 the auxiliary control register and the FI bit in the control
1379 register, thus disabling hit-under-miss without putting the
1380 processor into full low interrupt latency mode. ARM11MPCore
1381 is not affected.
1382
f630c1bd
WD
1383config ARM_ERRATA_764369
1384 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1385 depends on CPU_V7 && SMP
1386 help
1387 This option enables the workaround for erratum 764369
1388 affecting Cortex-A9 MPCore with two or more processors (all
1389 current revisions). Under certain timing circumstances, a data
1390 cache line maintenance operation by MVA targeting an Inner
1391 Shareable memory region may fail to proceed up to either the
1392 Point of Coherency or to the Point of Unification of the
1393 system. This workaround adds a DSB instruction before the
1394 relevant cache maintenance functions and sets a specific bit
1395 in the diagnostic control register of the SCU.
1396
11ed0ba1
WD
1397config PL310_ERRATA_769419
1398 bool "PL310 errata: no automatic Store Buffer drain"
1399 depends on CACHE_L2X0
1400 help
1401 On revisions of the PL310 prior to r3p2, the Store Buffer does
1402 not automatically drain. This can cause normal, non-cacheable
1403 writes to be retained when the memory system is idle, leading
1404 to suboptimal I/O performance for drivers using coherent DMA.
1405 This option adds a write barrier to the cpu_idle loop so that,
1406 on systems with an outer cache, the store buffer is drained
1407 explicitly.
1408
1da177e4
LT
1409endmenu
1410
1411source "arch/arm/common/Kconfig"
1412
1da177e4
LT
1413menu "Bus support"
1414
1415config ARM_AMBA
1416 bool
1417
1418config ISA
1419 bool
1da177e4
LT
1420 help
1421 Find out whether you have ISA slots on your motherboard. ISA is the
1422 name of a bus system, i.e. the way the CPU talks to the other stuff
1423 inside your box. Other bus systems are PCI, EISA, MicroChannel
1424 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1425 newer boards don't support it. If you have ISA, say Y, otherwise N.
1426
065909b9 1427# Select ISA DMA controller support
1da177e4
LT
1428config ISA_DMA
1429 bool
065909b9 1430 select ISA_DMA_API
1da177e4 1431
065909b9 1432# Select ISA DMA interface
5cae841b
AV
1433config ISA_DMA_API
1434 bool
5cae841b 1435
1da177e4 1436config PCI
0b05da72 1437 bool "PCI support" if MIGHT_HAVE_PCI
1da177e4
LT
1438 help
1439 Find out whether you have a PCI motherboard. PCI is the name of a
1440 bus system, i.e. the way the CPU talks to the other stuff inside
1441 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1442 VESA. If you have PCI, say Y, otherwise N.
1443
52882173
AV
1444config PCI_DOMAINS
1445 bool
1446 depends on PCI
1447
b080ac8a
MRJ
1448config PCI_NANOENGINE
1449 bool "BSE nanoEngine PCI support"
1450 depends on SA1100_NANOENGINE
1451 help
1452 Enable PCI on the BSE nanoEngine board.
1453
36e23590
MW
1454config PCI_SYSCALL
1455 def_bool PCI
1456
1da177e4
LT
1457# Select the host bridge type
1458config PCI_HOST_VIA82C505
1459 bool
1460 depends on PCI && ARCH_SHARK
1461 default y
1462
a0113a99
MR
1463config PCI_HOST_ITE8152
1464 bool
1465 depends on PCI && MACH_ARMCORE
1466 default y
1467 select DMABOUNCE
1468
1da177e4
LT
1469source "drivers/pci/Kconfig"
1470
1471source "drivers/pcmcia/Kconfig"
1472
1473endmenu
1474
1475menu "Kernel Features"
1476
0567a0c0
KH
1477source "kernel/time/Kconfig"
1478
3b55658a
DM
1479config HAVE_SMP
1480 bool
1481 help
1482 This option should be selected by machines which have an SMP-
1483 capable CPU.
1484
1485 The only effect of this option is to make the SMP-related
1486 options available to the user for configuration.
1487
1da177e4 1488config SMP
bb2d8130 1489 bool "Symmetric Multi-Processing"
fbb4ddac 1490 depends on CPU_V6K || CPU_V7
bc28248e 1491 depends on GENERIC_CLOCKEVENTS
3b55658a 1492 depends on HAVE_SMP
9934ebb8 1493 depends on MMU
f6dd9fa5 1494 select USE_GENERIC_SMP_HELPERS
89c3dedf 1495 select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
1da177e4
LT
1496 help
1497 This enables support for systems with more than one CPU. If you have
1498 a system with only one CPU, like most personal computers, say N. If
1499 you have a system with more than one CPU, say Y.
1500
1501 If you say N here, the kernel will run on single and multiprocessor
1502 machines, but will use only one CPU of a multiprocessor machine. If
1503 you say Y here, the kernel will run on many, but not all, single
1504 processor machines. On a single processor machine, the kernel will
1505 run faster if you say N here.
1506
395cf969 1507 See also <file:Documentation/x86/i386/IO-APIC.txt>,
1da177e4 1508 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
50a23e6e 1509 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
1da177e4
LT
1510
1511 If you don't know what to do here, say N.
1512
f00ec48f
RK
1513config SMP_ON_UP
1514 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
1515 depends on EXPERIMENTAL
4d2692a7 1516 depends on SMP && !XIP_KERNEL
f00ec48f
RK
1517 default y
1518 help
1519 SMP kernels contain instructions which fail on non-SMP processors.
1520 Enabling this option allows the kernel to modify itself to make
1521 these instructions safe. Disabling it allows about 1K of space
1522 savings.
1523
1524 If you don't know what to do here, say Y.
1525
c9018aab
VG
1526config ARM_CPU_TOPOLOGY
1527 bool "Support cpu topology definition"
1528 depends on SMP && CPU_V7
1529 default y
1530 help
1531 Support ARM cpu topology definition. The MPIDR register defines
1532 affinity between processors which is then used to describe the cpu
1533 topology of an ARM System.
1534
1535config SCHED_MC
1536 bool "Multi-core scheduler support"
1537 depends on ARM_CPU_TOPOLOGY
1538 help
1539 Multi-core scheduler support improves the CPU scheduler's decision
1540 making when dealing with multi-core CPU chips at a cost of slightly
1541 increased overhead in some places. If unsure say N here.
1542
1543config SCHED_SMT
1544 bool "SMT scheduler support"
1545 depends on ARM_CPU_TOPOLOGY
1546 help
1547 Improves the CPU scheduler's decision making when dealing with
1548 MultiThreading at a cost of slightly increased overhead in some
1549 places. If unsure say N here.
1550
a8cbcd92
RK
1551config HAVE_ARM_SCU
1552 bool
a8cbcd92
RK
1553 help
1554 This option enables support for the ARM system coherency unit
1555
f32f4ce2
RK
1556config HAVE_ARM_TWD
1557 bool
1558 depends on SMP
15095bb0 1559 select TICK_ONESHOT
f32f4ce2
RK
1560 help
1561 This options enables support for the ARM timer and watchdog unit
1562
8d5796d2
LB
1563choice
1564 prompt "Memory split"
1565 default VMSPLIT_3G
1566 help
1567 Select the desired split between kernel and user memory.
1568
1569 If you are not absolutely sure what you are doing, leave this
1570 option alone!
1571
1572 config VMSPLIT_3G
1573 bool "3G/1G user/kernel split"
1574 config VMSPLIT_2G
1575 bool "2G/2G user/kernel split"
1576 config VMSPLIT_1G
1577 bool "1G/3G user/kernel split"
1578endchoice
1579
1580config PAGE_OFFSET
1581 hex
1582 default 0x40000000 if VMSPLIT_1G
1583 default 0x80000000 if VMSPLIT_2G
1584 default 0xC0000000
1585
1da177e4
LT
1586config NR_CPUS
1587 int "Maximum number of CPUs (2-32)"
1588 range 2 32
1589 depends on SMP
1590 default "4"
1591
a054a811
RK
1592config HOTPLUG_CPU
1593 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1594 depends on SMP && HOTPLUG && EXPERIMENTAL
1595 help
1596 Say Y here to experiment with turning CPUs off and on. CPUs
1597 can be controlled through /sys/devices/system/cpu.
1598
37ee16ae
RK
1599config LOCAL_TIMERS
1600 bool "Use local timer interrupts"
971acb9b 1601 depends on SMP
37ee16ae 1602 default y
30d8bead 1603 select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
37ee16ae
RK
1604 help
1605 Enable support for local timers on SMP platforms, rather then the
1606 legacy IPI broadcast method. Local timers allows the system
1607 accounting to be spread across the timer interval, preventing a
1608 "thundering herd" at every timer tick.
1609
44986ab0
PDSN
1610config ARCH_NR_GPIO
1611 int
3dea19e8 1612 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
70227a45 1613 default 355 if ARCH_U8500
9a01ec30 1614 default 264 if MACH_H4700
44986ab0
PDSN
1615 default 0
1616 help
1617 Maximum number of GPIOs in the system.
1618
1619 If unsure, leave the default value.
1620
d45a398f 1621source kernel/Kconfig.preempt
1da177e4 1622
f8065813
RK
1623config HZ
1624 int
b130d5c2 1625 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || ARCH_S5P64X0 || \
a73ddc61 1626 ARCH_S5PV210 || ARCH_EXYNOS4
bfe65704 1627 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
5248c657 1628 default AT91_TIMER_HZ if ARCH_AT91
5da3e714 1629 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
f8065813
RK
1630 default 100
1631
16c79651 1632config THUMB2_KERNEL
4a50bfe3 1633 bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
e399b1a4 1634 depends on CPU_V7 && !CPU_V6 && !CPU_V6K && EXPERIMENTAL
16c79651
CM
1635 select AEABI
1636 select ARM_ASM_UNIFIED
89bace65 1637 select ARM_UNWIND
16c79651
CM
1638 help
1639 By enabling this option, the kernel will be compiled in
1640 Thumb-2 mode. A compiler/assembler that understand the unified
1641 ARM-Thumb syntax is needed.
1642
1643 If unsure, say N.
1644
6f685c5c
DM
1645config THUMB2_AVOID_R_ARM_THM_JUMP11
1646 bool "Work around buggy Thumb-2 short branch relocations in gas"
1647 depends on THUMB2_KERNEL && MODULES
1648 default y
1649 help
1650 Various binutils versions can resolve Thumb-2 branches to
1651 locally-defined, preemptible global symbols as short-range "b.n"
1652 branch instructions.
1653
1654 This is a problem, because there's no guarantee the final
1655 destination of the symbol, or any candidate locations for a
1656 trampoline, are within range of the branch. For this reason, the
1657 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1658 relocation in modules at all, and it makes little sense to add
1659 support.
1660
1661 The symptom is that the kernel fails with an "unsupported
1662 relocation" error when loading some modules.
1663
1664 Until fixed tools are available, passing
1665 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1666 code which hits this problem, at the cost of a bit of extra runtime
1667 stack usage in some cases.
1668
1669 The problem is described in more detail at:
1670 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1671
1672 Only Thumb-2 kernels are affected.
1673
1674 Unless you are sure your tools don't have this problem, say Y.
1675
0becb088
CM
1676config ARM_ASM_UNIFIED
1677 bool
1678
704bdda0
NP
1679config AEABI
1680 bool "Use the ARM EABI to compile the kernel"
1681 help
1682 This option allows for the kernel to be compiled using the latest
1683 ARM ABI (aka EABI). This is only useful if you are using a user
1684 space environment that is also compiled with EABI.
1685
1686 Since there are major incompatibilities between the legacy ABI and
1687 EABI, especially with regard to structure member alignment, this
1688 option also changes the kernel syscall calling convention to
1689 disambiguate both ABIs and allow for backward compatibility support
1690 (selected with CONFIG_OABI_COMPAT).
1691
1692 To use this you need GCC version 4.0.0 or later.
1693
6c90c872 1694config OABI_COMPAT
a73a3ff1 1695 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
9bc433a1 1696 depends on AEABI && EXPERIMENTAL && !THUMB2_KERNEL
6c90c872
NP
1697 default y
1698 help
1699 This option preserves the old syscall interface along with the
1700 new (ARM EABI) one. It also provides a compatibility layer to
1701 intercept syscalls that have structure arguments which layout
1702 in memory differs between the legacy ABI and the new ARM EABI
1703 (only for non "thumb" binaries). This option adds a tiny
1704 overhead to all syscalls and produces a slightly larger kernel.
1705 If you know you'll be using only pure EABI user space then you
1706 can say N here. If this option is not selected and you attempt
1707 to execute a legacy ABI binary then the result will be
1708 UNPREDICTABLE (in fact it can be predicted that it won't work
1709 at all). If in doubt say Y.
1710
eb33575c 1711config ARCH_HAS_HOLES_MEMORYMODEL
e80d6a24 1712 bool
e80d6a24 1713
05944d74
RK
1714config ARCH_SPARSEMEM_ENABLE
1715 bool
1716
07a2f737
RK
1717config ARCH_SPARSEMEM_DEFAULT
1718 def_bool ARCH_SPARSEMEM_ENABLE
1719
05944d74 1720config ARCH_SELECT_MEMORY_MODEL
be370302 1721 def_bool ARCH_SPARSEMEM_ENABLE
c80d79d7 1722
7b7bf499
WD
1723config HAVE_ARCH_PFN_VALID
1724 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1725
053a96ca 1726config HIGHMEM
e8db89a2
RK
1727 bool "High Memory Support"
1728 depends on MMU
053a96ca
NP
1729 help
1730 The address space of ARM processors is only 4 Gigabytes large
1731 and it has to accommodate user address space, kernel address
1732 space as well as some memory mapped IO. That means that, if you
1733 have a large amount of physical memory and/or IO, not all of the
1734 memory can be "permanently mapped" by the kernel. The physical
1735 memory that is not permanently mapped is called "high memory".
1736
1737 Depending on the selected kernel/user memory split, minimum
1738 vmalloc space and actual amount of RAM, you may not need this
1739 option which should result in a slightly faster kernel.
1740
1741 If unsure, say n.
1742
65cec8e3
RK
1743config HIGHPTE
1744 bool "Allocate 2nd-level pagetables from highmem"
1745 depends on HIGHMEM
65cec8e3 1746
1b8873a0
JI
1747config HW_PERF_EVENTS
1748 bool "Enable hardware performance counter support for perf events"
fe166148 1749 depends on PERF_EVENTS && CPU_HAS_PMU
1b8873a0
JI
1750 default y
1751 help
1752 Enable hardware performance counter support for perf events. If
1753 disabled, perf events will use software events only.
1754
3f22ab27
DH
1755source "mm/Kconfig"
1756
c1b2d970
MD
1757config FORCE_MAX_ZONEORDER
1758 int "Maximum zone order" if ARCH_SHMOBILE
1759 range 11 64 if ARCH_SHMOBILE
1760 default "9" if SA1111
1761 default "11"
1762 help
1763 The kernel memory allocator divides physically contiguous memory
1764 blocks into "zones", where each zone is a power of two number of
1765 pages. This option selects the largest power of two that the kernel
1766 keeps in the memory allocator. If you need to allocate very large
1767 blocks of physically contiguous memory, then you may need to
1768 increase this value.
1769
1770 This config option is actually maximum order plus one. For example,
1771 a value of 11 means that the largest free memory block is 2^10 pages.
1772
1da177e4
LT
1773config LEDS
1774 bool "Timer and CPU usage LEDs"
e055d5bf 1775 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
8c8fdbc9 1776 ARCH_EBSA285 || ARCH_INTEGRATOR || \
1da177e4
LT
1777 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1778 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
73a59c1c 1779 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
25329671 1780 ARCH_AT91 || ARCH_DAVINCI || \
ff3042fb 1781 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1da177e4
LT
1782 help
1783 If you say Y here, the LEDs on your machine will be used
1784 to provide useful information about your current system status.
1785
1786 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1787 be able to select which LEDs are active using the options below. If
1788 you are compiling a kernel for the EBSA-110 or the LART however, the
1789 red LED will simply flash regularly to indicate that the system is
1790 still functional. It is safe to say Y here if you have a CATS
1791 system, but the driver will do nothing.
1792
1793config LEDS_TIMER
1794 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
eebdf7d7
DB
1795 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1796 || MACH_OMAP_PERSEUS2
1da177e4 1797 depends on LEDS
0567a0c0 1798 depends on !GENERIC_CLOCKEVENTS
1da177e4
LT
1799 default y if ARCH_EBSA110
1800 help
1801 If you say Y here, one of the system LEDs (the green one on the
1802 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1803 will flash regularly to indicate that the system is still
1804 operational. This is mainly useful to kernel hackers who are
1805 debugging unstable kernels.
1806
1807 The LART uses the same LED for both Timer LED and CPU usage LED
1808 functions. You may choose to use both, but the Timer LED function
1809 will overrule the CPU usage LED.
1810
1811config LEDS_CPU
1812 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
eebdf7d7
DB
1813 !ARCH_OMAP) \
1814 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1815 || MACH_OMAP_PERSEUS2
1da177e4
LT
1816 depends on LEDS
1817 help
1818 If you say Y here, the red LED will be used to give a good real
1819 time indication of CPU usage, by lighting whenever the idle task
1820 is not currently executing.
1821
1822 The LART uses the same LED for both Timer LED and CPU usage LED
1823 functions. You may choose to use both, but the Timer LED function
1824 will overrule the CPU usage LED.
1825
1826config ALIGNMENT_TRAP
1827 bool
f12d0d7c 1828 depends on CPU_CP15_MMU
1da177e4 1829 default y if !ARCH_EBSA110
e119bfff 1830 select HAVE_PROC_CPU if PROC_FS
1da177e4 1831 help
84eb8d06 1832 ARM processors cannot fetch/store information which is not
1da177e4
LT
1833 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1834 address divisible by 4. On 32-bit ARM processors, these non-aligned
1835 fetch/store instructions will be emulated in software if you say
1836 here, which has a severe performance impact. This is necessary for
1837 correct operation of some network protocols. With an IP-only
1838 configuration it is safe to say N, otherwise say Y.
1839
39ec58f3
LB
1840config UACCESS_WITH_MEMCPY
1841 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1842 depends on MMU && EXPERIMENTAL
1843 default y if CPU_FEROCEON
1844 help
1845 Implement faster copy_to_user and clear_user methods for CPU
1846 cores where a 8-word STM instruction give significantly higher
1847 memory write throughput than a sequence of individual 32bit stores.
1848
1849 A possible side effect is a slight increase in scheduling latency
1850 between threads sharing the same address space if they invoke
1851 such copy operations with large buffers.
1852
1853 However, if the CPU data cache is using a write-allocate mode,
1854 this option is unlikely to provide any performance gain.
1855
70c70d97
NP
1856config SECCOMP
1857 bool
1858 prompt "Enable seccomp to safely compute untrusted bytecode"
1859 ---help---
1860 This kernel feature is useful for number crunching applications
1861 that may need to compute untrusted bytecode during their
1862 execution. By using pipes or other transports made available to
1863 the process as file descriptors supporting the read/write
1864 syscalls, it's possible to isolate those applications in
1865 their own address space using seccomp. Once seccomp is
1866 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1867 and the task is only allowed to execute a few safe syscalls
1868 defined by each seccomp mode.
1869
c743f380
NP
1870config CC_STACKPROTECTOR
1871 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
4a50bfe3 1872 depends on EXPERIMENTAL
c743f380
NP
1873 help
1874 This option turns on the -fstack-protector GCC feature. This
1875 feature puts, at the beginning of functions, a canary value on
1876 the stack just before the return address, and validates
1877 the value just before actually returning. Stack based buffer
1878 overflows (that need to overwrite this return address) now also
1879 overwrite the canary, which gets detected and the attack is then
1880 neutralized via a kernel panic.
1881 This feature requires gcc version 4.2 or above.
1882
73a65b3f
UKK
1883config DEPRECATED_PARAM_STRUCT
1884 bool "Provide old way to pass kernel parameters"
1885 help
1886 This was deprecated in 2001 and announced to live on for 5 years.
1887 Some old boot loaders still use this way.
1888
1da177e4
LT
1889endmenu
1890
1891menu "Boot options"
1892
9eb8f674
GL
1893config USE_OF
1894 bool "Flattened Device Tree support"
1895 select OF
1896 select OF_EARLY_FLATTREE
08a543ad 1897 select IRQ_DOMAIN
9eb8f674
GL
1898 help
1899 Include support for flattened device tree machine descriptions.
1900
1da177e4
LT
1901# Compressed boot loader in ROM. Yes, we really want to ask about
1902# TEXT and BSS so we preserve their values in the config files.
1903config ZBOOT_ROM_TEXT
1904 hex "Compressed ROM boot loader base address"
1905 default "0"
1906 help
1907 The physical address at which the ROM-able zImage is to be
1908 placed in the target. Platforms which normally make use of
1909 ROM-able zImage formats normally set this to a suitable
1910 value in their defconfig file.
1911
1912 If ZBOOT_ROM is not enabled, this has no effect.
1913
1914config ZBOOT_ROM_BSS
1915 hex "Compressed ROM boot loader BSS address"
1916 default "0"
1917 help
f8c440b2
DF
1918 The base address of an area of read/write memory in the target
1919 for the ROM-able zImage which must be available while the
1920 decompressor is running. It must be large enough to hold the
1921 entire decompressed kernel plus an additional 128 KiB.
1922 Platforms which normally make use of ROM-able zImage formats
1923 normally set this to a suitable value in their defconfig file.
1da177e4
LT
1924
1925 If ZBOOT_ROM is not enabled, this has no effect.
1926
1927config ZBOOT_ROM
1928 bool "Compressed boot loader in ROM/flash"
1929 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1930 help
1931 Say Y here if you intend to execute your compressed kernel image
1932 (zImage) directly from ROM or flash. If unsure, say N.
1933
090ab3ff
SH
1934choice
1935 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
1936 depends on ZBOOT_ROM && ARCH_SH7372 && EXPERIMENTAL
1937 default ZBOOT_ROM_NONE
1938 help
1939 Include experimental SD/MMC loading code in the ROM-able zImage.
1940 With this enabled it is possible to write the the ROM-able zImage
1941 kernel image to an MMC or SD card and boot the kernel straight
1942 from the reset vector. At reset the processor Mask ROM will load
1943 the first part of the the ROM-able zImage which in turn loads the
1944 rest the kernel image to RAM.
1945
1946config ZBOOT_ROM_NONE
1947 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1948 help
1949 Do not load image from SD or MMC
1950
f45b1149
SH
1951config ZBOOT_ROM_MMCIF
1952 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
f45b1149 1953 help
090ab3ff
SH
1954 Load image from MMCIF hardware block.
1955
1956config ZBOOT_ROM_SH_MOBILE_SDHI
1957 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1958 help
1959 Load image from SDHI hardware block
1960
1961endchoice
f45b1149 1962
e2a6a3aa
JB
1963config ARM_APPENDED_DTB
1964 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
1965 depends on OF && !ZBOOT_ROM && EXPERIMENTAL
1966 help
1967 With this option, the boot code will look for a device tree binary
1968 (DTB) appended to zImage
1969 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1970
1971 This is meant as a backward compatibility convenience for those
1972 systems with a bootloader that can't be upgraded to accommodate
1973 the documented boot protocol using a device tree.
1974
1975 Beware that there is very little in terms of protection against
1976 this option being confused by leftover garbage in memory that might
1977 look like a DTB header after a reboot if no actual DTB is appended
1978 to zImage. Do not leave this option active in a production kernel
1979 if you don't intend to always append a DTB. Proper passing of the
1980 location into r2 of a bootloader provided DTB is always preferable
1981 to this option.
1982
b90b9a38
NP
1983config ARM_ATAG_DTB_COMPAT
1984 bool "Supplement the appended DTB with traditional ATAG information"
1985 depends on ARM_APPENDED_DTB
1986 help
1987 Some old bootloaders can't be updated to a DTB capable one, yet
1988 they provide ATAGs with memory configuration, the ramdisk address,
1989 the kernel cmdline string, etc. Such information is dynamically
1990 provided by the bootloader and can't always be stored in a static
1991 DTB. To allow a device tree enabled kernel to be used with such
1992 bootloaders, this option allows zImage to extract the information
1993 from the ATAG list and store it at run time into the appended DTB.
1994
1da177e4
LT
1995config CMDLINE
1996 string "Default kernel command string"
1997 default ""
1998 help
1999 On some architectures (EBSA110 and CATS), there is currently no way
2000 for the boot loader to pass arguments to the kernel. For these
2001 architectures, you should supply some command-line options at build
2002 time by entering them here. As a minimum, you should specify the
2003 memory size and the root device (e.g., mem=64M root=/dev/nfs).
2004
4394c124
VB
2005choice
2006 prompt "Kernel command line type" if CMDLINE != ""
2007 default CMDLINE_FROM_BOOTLOADER
2008
2009config CMDLINE_FROM_BOOTLOADER
2010 bool "Use bootloader kernel arguments if available"
2011 help
2012 Uses the command-line options passed by the boot loader. If
2013 the boot loader doesn't provide any, the default kernel command
2014 string provided in CMDLINE will be used.
2015
2016config CMDLINE_EXTEND
2017 bool "Extend bootloader kernel arguments"
2018 help
2019 The command-line arguments provided by the boot loader will be
2020 appended to the default kernel command string.
2021
92d2040d
AH
2022config CMDLINE_FORCE
2023 bool "Always use the default kernel command string"
92d2040d
AH
2024 help
2025 Always use the default kernel command string, even if the boot
2026 loader passes other arguments to the kernel.
2027 This is useful if you cannot or don't want to change the
2028 command-line options your boot loader passes to the kernel.
4394c124 2029endchoice
92d2040d 2030
1da177e4
LT
2031config XIP_KERNEL
2032 bool "Kernel Execute-In-Place from ROM"
497b7e94 2033 depends on !ZBOOT_ROM && !ARM_LPAE
1da177e4
LT
2034 help
2035 Execute-In-Place allows the kernel to run from non-volatile storage
2036 directly addressable by the CPU, such as NOR flash. This saves RAM
2037 space since the text section of the kernel is not loaded from flash
2038 to RAM. Read-write sections, such as the data section and stack,
2039 are still copied to RAM. The XIP kernel is not compressed since
2040 it has to run directly from flash, so it will take more space to
2041 store it. The flash address used to link the kernel object files,
2042 and for storing it, is configuration dependent. Therefore, if you
2043 say Y here, you must know the proper physical address where to
2044 store the kernel image depending on your own flash memory usage.
2045
2046 Also note that the make target becomes "make xipImage" rather than
2047 "make zImage" or "make Image". The final kernel binary to put in
2048 ROM memory will be arch/arm/boot/xipImage.
2049
2050 If unsure, say N.
2051
2052config XIP_PHYS_ADDR
2053 hex "XIP Kernel Physical Location"
2054 depends on XIP_KERNEL
2055 default "0x00080000"
2056 help
2057 This is the physical address in your flash memory the kernel will
2058 be linked for and stored to. This address is dependent on your
2059 own flash usage.
2060
c587e4a6
RP
2061config KEXEC
2062 bool "Kexec system call (EXPERIMENTAL)"
02b73e2e 2063 depends on EXPERIMENTAL && (!SMP || HOTPLUG_CPU)
c587e4a6
RP
2064 help
2065 kexec is a system call that implements the ability to shutdown your
2066 current kernel, and to start another kernel. It is like a reboot
01dd2fbf 2067 but it is independent of the system firmware. And like a reboot
c587e4a6
RP
2068 you can start any kernel with it, not just Linux.
2069
2070 It is an ongoing process to be certain the hardware in a machine
2071 is properly shutdown, so do not be surprised if this code does not
2072 initially work for you. It may help to enable device hotplugging
2073 support.
2074
4cd9d6f7
RP
2075config ATAGS_PROC
2076 bool "Export atags in procfs"
b98d7291
UL
2077 depends on KEXEC
2078 default y
4cd9d6f7
RP
2079 help
2080 Should the atags used to boot the kernel be exported in an "atags"
2081 file in procfs. Useful with kexec.
2082
cb5d39b3
MW
2083config CRASH_DUMP
2084 bool "Build kdump crash kernel (EXPERIMENTAL)"
2085 depends on EXPERIMENTAL
2086 help
2087 Generate crash dump after being started by kexec. This should
2088 be normally only set in special crash dump kernels which are
2089 loaded in the main kernel with kexec-tools into a specially
2090 reserved region and then later executed after a crash by
2091 kdump/kexec. The crash dump kernel must be compiled to a
2092 memory address not used by the main kernel
2093
2094 For more details see Documentation/kdump/kdump.txt
2095
e69edc79
EM
2096config AUTO_ZRELADDR
2097 bool "Auto calculation of the decompressed kernel image address"
2098 depends on !ZBOOT_ROM && !ARCH_U300
2099 help
2100 ZRELADDR is the physical address where the decompressed kernel
2101 image will be placed. If AUTO_ZRELADDR is selected, the address
2102 will be determined at run-time by masking the current IP with
2103 0xf8000000. This assumes the zImage being placed in the first 128MB
2104 from start of memory.
2105
1da177e4
LT
2106endmenu
2107
ac9d7efc 2108menu "CPU Power Management"
1da177e4 2109
89c52ed4 2110if ARCH_HAS_CPUFREQ
1da177e4
LT
2111
2112source "drivers/cpufreq/Kconfig"
2113
64f102b6
YS
2114config CPU_FREQ_IMX
2115 tristate "CPUfreq driver for i.MX CPUs"
2116 depends on ARCH_MXC && CPU_FREQ
2117 help
2118 This enables the CPUfreq driver for i.MX CPUs.
2119
1da177e4
LT
2120config CPU_FREQ_SA1100
2121 bool
1da177e4
LT
2122
2123config CPU_FREQ_SA1110
2124 bool
1da177e4
LT
2125
2126config CPU_FREQ_INTEGRATOR
2127 tristate "CPUfreq driver for ARM Integrator CPUs"
2128 depends on ARCH_INTEGRATOR && CPU_FREQ
2129 default y
2130 help
2131 This enables the CPUfreq driver for ARM Integrator CPUs.
2132
2133 For details, take a look at <file:Documentation/cpu-freq>.
2134
2135 If in doubt, say Y.
2136
9e2697ff
RK
2137config CPU_FREQ_PXA
2138 bool
2139 depends on CPU_FREQ && ARCH_PXA && PXA25x
2140 default y
ca7d156e 2141 select CPU_FREQ_TABLE
9e2697ff
RK
2142 select CPU_FREQ_DEFAULT_GOV_USERSPACE
2143
9d56c02a
BD
2144config CPU_FREQ_S3C
2145 bool
2146 help
2147 Internal configuration node for common cpufreq on Samsung SoC
2148
2149config CPU_FREQ_S3C24XX
4a50bfe3 2150 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
b130d5c2 2151 depends on ARCH_S3C24XX && CPU_FREQ && EXPERIMENTAL
9d56c02a
BD
2152 select CPU_FREQ_S3C
2153 help
2154 This enables the CPUfreq driver for the Samsung S3C24XX family
2155 of CPUs.
2156
2157 For details, take a look at <file:Documentation/cpu-freq>.
2158
2159 If in doubt, say N.
2160
2161config CPU_FREQ_S3C24XX_PLL
4a50bfe3 2162 bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
9d56c02a
BD
2163 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
2164 help
2165 Compile in support for changing the PLL frequency from the
2166 S3C24XX series CPUfreq driver. The PLL takes time to settle
2167 after a frequency change, so by default it is not enabled.
2168
2169 This also means that the PLL tables for the selected CPU(s) will
2170 be built which may increase the size of the kernel image.
2171
2172config CPU_FREQ_S3C24XX_DEBUG
2173 bool "Debug CPUfreq Samsung driver core"
2174 depends on CPU_FREQ_S3C24XX
2175 help
2176 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
2177
2178config CPU_FREQ_S3C24XX_IODEBUG
2179 bool "Debug CPUfreq Samsung driver IO timing"
2180 depends on CPU_FREQ_S3C24XX
2181 help
2182 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
2183
e6d197a6
BD
2184config CPU_FREQ_S3C24XX_DEBUGFS
2185 bool "Export debugfs for CPUFreq"
2186 depends on CPU_FREQ_S3C24XX && DEBUG_FS
2187 help
2188 Export status information via debugfs.
2189
1da177e4
LT
2190endif
2191
ac9d7efc
RK
2192source "drivers/cpuidle/Kconfig"
2193
2194endmenu
2195
1da177e4
LT
2196menu "Floating point emulation"
2197
2198comment "At least one emulation must be selected"
2199
2200config FPE_NWFPE
2201 bool "NWFPE math emulation"
593c252a 2202 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
1da177e4
LT
2203 ---help---
2204 Say Y to include the NWFPE floating point emulator in the kernel.
2205 This is necessary to run most binaries. Linux does not currently
2206 support floating point hardware so you need to say Y here even if
2207 your machine has an FPA or floating point co-processor podule.
2208
2209 You may say N here if you are going to load the Acorn FPEmulator
2210 early in the bootup.
2211
2212config FPE_NWFPE_XP
2213 bool "Support extended precision"
bedf142b 2214 depends on FPE_NWFPE
1da177e4
LT
2215 help
2216 Say Y to include 80-bit support in the kernel floating-point
2217 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2218 Note that gcc does not generate 80-bit operations by default,
2219 so in most cases this option only enlarges the size of the
2220 floating point emulator without any good reason.
2221
2222 You almost surely want to say N here.
2223
2224config FPE_FASTFPE
2225 bool "FastFPE math emulation (EXPERIMENTAL)"
8993a44c 2226 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1da177e4
LT
2227 ---help---
2228 Say Y here to include the FAST floating point emulator in the kernel.
2229 This is an experimental much faster emulator which now also has full
2230 precision for the mantissa. It does not support any exceptions.
2231 It is very simple, and approximately 3-6 times faster than NWFPE.
2232
2233 It should be sufficient for most programs. It may be not suitable
2234 for scientific calculations, but you have to check this for yourself.
2235 If you do not feel you need a faster FP emulation you should better
2236 choose NWFPE.
2237
2238config VFP
2239 bool "VFP-format floating point maths"
e399b1a4 2240 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1da177e4
LT
2241 help
2242 Say Y to include VFP support code in the kernel. This is needed
2243 if your hardware includes a VFP unit.
2244
2245 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2246 release notes and additional status information.
2247
2248 Say N if your target does not have VFP hardware.
2249
25ebee02
CM
2250config VFPv3
2251 bool
2252 depends on VFP
2253 default y if CPU_V7
2254
b5872db4
CM
2255config NEON
2256 bool "Advanced SIMD (NEON) Extension support"
2257 depends on VFPv3 && CPU_V7
2258 help
2259 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2260 Extension.
2261
1da177e4
LT
2262endmenu
2263
2264menu "Userspace binary formats"
2265
2266source "fs/Kconfig.binfmt"
2267
2268config ARTHUR
2269 tristate "RISC OS personality"
704bdda0 2270 depends on !AEABI
1da177e4
LT
2271 help
2272 Say Y here to include the kernel code necessary if you want to run
2273 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2274 experimental; if this sounds frightening, say N and sleep in peace.
2275 You can also say M here to compile this support as a module (which
2276 will be called arthur).
2277
2278endmenu
2279
2280menu "Power management options"
2281
eceab4ac 2282source "kernel/power/Kconfig"
1da177e4 2283
f4cb5700 2284config ARCH_SUSPEND_POSSIBLE
6b6844dd 2285 depends on !ARCH_S5PC100
6a786182
RK
2286 depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
2287 CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE
f4cb5700
JB
2288 def_bool y
2289
15e0d9e3
AB
2290config ARM_CPU_SUSPEND
2291 def_bool PM_SLEEP
2292
1da177e4
LT
2293endmenu
2294
d5950b43
SR
2295source "net/Kconfig"
2296
ac25150f 2297source "drivers/Kconfig"
1da177e4
LT
2298
2299source "fs/Kconfig"
2300
1da177e4
LT
2301source "arch/arm/Kconfig.debug"
2302
2303source "security/Kconfig"
2304
2305source "crypto/Kconfig"
2306
2307source "lib/Kconfig"
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