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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
2# For a description of the syntax of this configuration file,
3# see Documentation/kbuild/kconfig-language.txt.
4#
5
6mainmenu "Linux Kernel Configuration"
7
8config ARM
9 bool
10 default y
Adrian Bunk2064c942008-04-28 23:44:43 +020011 select HAVE_IDE
Alessandro Zummo12b824f2006-03-27 01:16:35 -080012 select RTC_LIB
Ralf Baechle75e71532007-02-09 17:08:58 +000013 select SYS_SUPPORTS_APM_EMULATION
Mathieu Desnoyers42d4b832008-02-02 15:10:34 -050014 select HAVE_OPROFILE
Mathieu Desnoyers3f550092008-02-02 15:10:35 -050015 select HAVE_KPROBES if (!XIP_KERNEL)
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080016 select HAVE_KRETPROBES if (HAVE_KPROBES)
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 help
18 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000019 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070020 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000021 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070022 Europe. There is an ARM Linux project with a web page at
23 <http://www.arm.linux.org.uk/>.
24
Ralf Baechle75e71532007-02-09 17:08:58 +000025config SYS_SUPPORTS_APM_EMULATION
26 bool
27
David Brownell0a938b92007-03-05 00:30:18 -080028config GENERIC_GPIO
29 bool
30 default n
31
Kevin Hilman746140c2006-09-22 00:16:30 +010032config GENERIC_TIME
33 bool
34 default n
35
Kevin Hilman0567a0c2007-03-13 20:29:24 +010036config GENERIC_CLOCKEVENTS
37 bool
38 default n
39
Catalin Marinasa8655e82008-02-04 17:30:57 +010040config GENERIC_CLOCKEVENTS_BROADCAST
41 bool
42 depends on GENERIC_CLOCKEVENTS
43 default y if SMP && !LOCAL_TIMERS
44
Linus Torvalds1da177e2005-04-16 15:20:36 -070045config MMU
46 bool
47 default y
48
Al Viro5ea81762007-02-11 15:41:31 +000049config NO_IOPORT
50 bool
51 default n
52
Linus Torvalds1da177e2005-04-16 15:20:36 -070053config EISA
54 bool
55 ---help---
56 The Extended Industry Standard Architecture (EISA) bus was
57 developed as an open alternative to the IBM MicroChannel bus.
58
59 The EISA bus provided some of the features of the IBM MicroChannel
60 bus while maintaining backward compatibility with cards made for
61 the older ISA bus. The EISA bus saw limited use between 1988 and
62 1995 when it was made obsolete by the PCI bus.
63
64 Say Y here if you are building a kernel for an EISA-based machine.
65
66 Otherwise, say N.
67
68config SBUS
69 bool
70
71config MCA
72 bool
73 help
74 MicroChannel Architecture is found in some IBM PS/2 machines and
75 laptops. It is a bus system similar to PCI or ISA. See
76 <file:Documentation/mca.txt> (and especially the web page given
77 there) before attempting to build an MCA bus kernel.
78
Thomas Gleixner4a2581a2006-07-01 22:30:09 +010079config GENERIC_HARDIRQS
80 bool
81 default y
82
Russell Kingf16fb1e2007-04-28 09:59:37 +010083config STACKTRACE_SUPPORT
84 bool
85 default y
86
87config LOCKDEP_SUPPORT
88 bool
89 default y
90
Russell King7ad1bcb2006-08-27 12:07:02 +010091config TRACE_IRQFLAGS_SUPPORT
92 bool
93 default y
94
Thomas Gleixner4a2581a2006-07-01 22:30:09 +010095config HARDIRQS_SW_RESEND
96 bool
97 default y
98
99config GENERIC_IRQ_PROBE
100 bool
101 default y
102
Nick Piggin95c354f2008-01-30 13:31:20 +0100103config GENERIC_LOCKBREAK
104 bool
105 default y
106 depends on SMP && PREEMPT
107
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108config RWSEM_GENERIC_SPINLOCK
109 bool
110 default y
111
112config RWSEM_XCHGADD_ALGORITHM
113 bool
114
David Howellsf0d1b0b2006-12-08 02:37:49 -0800115config ARCH_HAS_ILOG2_U32
116 bool
117 default n
118
119config ARCH_HAS_ILOG2_U64
120 bool
121 default n
122
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800123config GENERIC_HWEIGHT
124 bool
125 default y
126
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127config GENERIC_CALIBRATE_DELAY
128 bool
129 default y
130
David Howellsb0b933c2008-02-08 04:19:27 -0800131config ARCH_SUPPORTS_AOUT
132 def_bool y
133
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100134config ARCH_MAY_HAVE_PC_FDC
135 bool
136
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800137config ZONE_DMA
138 bool
139 default y
140
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141config GENERIC_ISA_DMA
142 bool
143
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144config FIQ
145 bool
146
Al Viro034d2f52005-12-19 16:27:59 -0500147config ARCH_MTD_XIP
148 bool
149
Mathieu Desnoyersc0ffa3a2008-02-02 15:10:32 -0500150if OPROFILE
151
152config OPROFILE_ARMV6
153 def_bool y
154 depends on CPU_V6 && !SMP
155 select OPROFILE_ARM11_CORE
156
157config OPROFILE_MPCORE
158 def_bool y
159 depends on CPU_V6 && SMP
160 select OPROFILE_ARM11_CORE
161
162config OPROFILE_ARM11_CORE
163 bool
164
165endif
166
Hyok S. Choic760fc12006-03-27 15:18:50 +0100167config VECTORS_BASE
168 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900169 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100170 default DRAM_BASE if REMAP_VECTORS_TO_RAM
171 default 0x00000000
172 help
173 The base address of exception vectors.
174
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175source "init/Kconfig"
176
177menu "System Type"
178
179choice
180 prompt "ARM system type"
Catalin Marinas6a0e2432006-03-07 14:42:27 +0000181 default ARCH_VERSATILE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100183config ARCH_AAEC2000
184 bool "Agilent AAEC-2000 based"
185 select ARM_AMBA
186 help
187 This enables support for systems based on the Agilent AAEC-2000
188
189config ARCH_INTEGRATOR
190 bool "ARM Ltd. Integrator family"
191 select ARM_AMBA
192 select ICST525
193 help
194 Support for ARM's Integrator platform.
195
196config ARCH_REALVIEW
197 bool "ARM Ltd. RealView family"
198 select ARM_AMBA
199 select ICST307
Catalin Marinas85802af2008-02-04 17:24:54 +0100200 select GENERIC_TIME
Catalin Marinasae30cea2008-02-04 17:26:55 +0100201 select GENERIC_CLOCKEVENTS
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100202 help
203 This enables support for ARM Ltd RealView boards.
204
205config ARCH_VERSATILE
206 bool "ARM Ltd. Versatile family"
207 select ARM_AMBA
208 select ARM_VIC
209 select ICST307
Kevin Hilmanb49c87c2007-03-08 20:25:13 +0100210 select GENERIC_TIME
Kevin Hilman89df1272007-03-08 20:30:38 +0100211 select GENERIC_CLOCKEVENTS
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100212 help
213 This enables support for ARM Ltd Versatile board.
214
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100215config ARCH_AT91
216 bool "Atmel AT91"
David Brownell0a938b92007-03-05 00:30:18 -0800217 select GENERIC_GPIO
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100218 help
Andrew Victor2b3b3512008-01-24 15:10:39 +0100219 This enables support for systems based on the Atmel AT91RM9200,
220 AT91SAM9 and AT91CAP9 processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100221
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222config ARCH_CLPS7500
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100223 bool "Cirrus CL-PS7500FE"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224 select TIMER_ACORN
Russell Kingf7e68bb2005-05-05 14:49:01 +0100225 select ISA
Russell Kinge4169882007-02-26 21:07:30 +0000226 select NO_IOPORT
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000227 help
228 Support for the Cirrus Logic PS7500FE system-on-a-chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229
230config ARCH_CLPS711X
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100231 bool "Cirrus Logic CLPS711x/EP721x-based"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000232 help
233 Support for Cirrus Logic 711x/721x based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234
235config ARCH_CO285
236 bool "Co-EBSA285"
237 select FOOTBRIDGE
238 select FOOTBRIDGE_ADDIN
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000239 help
240 Support for Intel's EBSA285 companion chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241
242config ARCH_EBSA110
243 bool "EBSA-110"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100244 select ISA
Russell Kingc5eb2a22007-03-03 11:54:19 +0000245 select NO_IOPORT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246 help
247 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000248 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 Ethernet interface, two PCMCIA sockets, two serial ports and a
250 parallel port.
251
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000252config ARCH_EP93XX
253 bool "EP93xx-based"
254 select ARM_AMBA
255 select ARM_VIC
Herbert Valerio Riedel4e9f9fd2007-11-26 18:41:02 +0100256 select GENERIC_GPIO
Ryan Mallonb6850042008-04-16 02:56:35 +0100257 select HAVE_GPIO_LIB
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000258 help
259 This enables support for the Cirrus EP93xx series of CPUs.
260
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261config ARCH_FOOTBRIDGE
262 bool "FootBridge"
263 select FOOTBRIDGE
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000264 help
265 Support for systems based on the DC21285 companion chip
266 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100268config ARCH_NETX
269 bool "Hilscher NetX based"
270 select ARM_VIC
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000271 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100272 This enables support for systems based on the Hilscher NetX Soc
273
274config ARCH_H720X
275 bool "Hynix HMS720x-based"
276 select ISA_DMA_API
277 help
278 This enables support for systems based on the Hynix HMS720x
279
280config ARCH_IMX
281 bool "IMX"
Pavel Pisab3e6a502007-05-12 14:31:17 +0100282 select GENERIC_GPIO
Pavel Pisa89bba432007-05-13 17:37:33 +0100283 select GENERIC_TIME
284 select GENERIC_CLOCKEVENTS
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100285 help
286 Support for Motorola's i.MX family of processors (MX1, MXL).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287
Russell King3b938be2007-05-12 11:25:44 +0100288config ARCH_IOP13XX
289 bool "IOP13xx-based"
290 depends on MMU
291 select PLAT_IOP
292 select PCI
293 select ARCH_SUPPORTS_MSI
294 help
295 Support for Intel's IOP13XX (XScale) family of processors.
296
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100297config ARCH_IOP32X
298 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100299 depends on MMU
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100300 select PLAT_IOP
Russell Kingf7e68bb2005-05-05 14:49:01 +0100301 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000302 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100303 Support for Intel's 80219 and IOP32X (XScale) family of
304 processors.
305
306config ARCH_IOP33X
307 bool "IOP33x-based"
308 depends on MMU
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100309 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100310 select PCI
311 help
312 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313
Russell King3b938be2007-05-12 11:25:44 +0100314config ARCH_IXP23XX
315 bool "IXP23XX-based"
Dan Williams588ef762007-02-13 17:12:04 +0100316 depends on MMU
Russell King3b938be2007-05-12 11:25:44 +0100317 select PCI
Dan Williams285f5fa2006-12-07 02:59:39 +0100318 help
Russell King3b938be2007-05-12 11:25:44 +0100319 Support for Intel's IXP23xx (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320
321config ARCH_IXP2000
322 bool "IXP2400/2800-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100323 depends on MMU
Russell Kingf7e68bb2005-05-05 14:49:01 +0100324 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000325 help
326 Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327
Russell King3b938be2007-05-12 11:25:44 +0100328config ARCH_IXP4XX
329 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100330 depends on MMU
Milan Svoboda8858e9a2007-05-14 07:50:42 +0100331 select GENERIC_GPIO
Russell King3b938be2007-05-12 11:25:44 +0100332 select GENERIC_TIME
333 select GENERIC_CLOCKEVENTS
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100334 help
Russell King3b938be2007-05-12 11:25:44 +0100335 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100336
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337config ARCH_L7200
338 bool "LinkUp-L7200"
339 select FIQ
340 help
341 Say Y here if you intend to run this kernel on a LinkUp Systems
342 L7200 Software Development Board which uses an ARM720T processor.
343 Information on this board can be obtained at:
344
345 <http://www.linkupsys.com/>
346
347 If you have any questions or comments about the Linux kernel port
348 to this board, send e-mail to <sjhill@cotw.com>.
349
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100350config ARCH_KS8695
351 bool "Micrel/Kendin KS8695"
Andrew Victor8a87a992007-05-14 14:30:15 +0100352 select GENERIC_GPIO
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100353 help
354 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
355 System-on-Chip devices.
356
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100357config ARCH_NS9XXX
358 bool "NetSilicon NS9xxx"
Uwe Kleine-König689f2a02007-09-30 20:35:09 +0100359 select GENERIC_GPIO
Uwe Kleine-Königcef59752007-09-30 20:35:48 +0100360 select GENERIC_TIME
Uwe Kleine-Königc0bb87f2007-09-30 20:36:00 +0100361 select GENERIC_CLOCKEVENTS
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100362 help
363 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
364 System.
365
366 <http://www.digi.com/products/microprocessors/index.jsp>
367
Quinn Jensen52c543f2007-07-09 22:06:53 +0100368config ARCH_MXC
369 bool "Freescale MXC/iMX-based"
Juergen Beisertd0f349f2008-07-05 10:02:50 +0200370 select GENERIC_TIME
371 select GENERIC_CLOCKEVENTS
Quinn Jensen52c543f2007-07-09 22:06:53 +0100372 select ARCH_MTD_XIP
Juergen Beisert07bd1a62008-07-05 10:02:49 +0200373 select GENERIC_GPIO
374 select HAVE_GPIO_LIB
Quinn Jensen52c543f2007-07-09 22:06:53 +0100375 help
376 Support for Freescale MXC/iMX-based family of processors
377
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400378config ARCH_ORION5X
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400379 bool "Marvell Orion"
380 depends on MMU
Tzachi Perelstein038ee082007-10-23 15:14:42 -0400381 select PCI
Tzachi Perelstein01af72e2007-10-23 15:14:42 -0400382 select GENERIC_GPIO
Tzachi Perelstein51cbff12007-10-23 15:14:42 -0400383 select GENERIC_TIME
384 select GENERIC_CLOCKEVENTS
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400385 select PLAT_ORION
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400386 help
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400387 Support for the following Marvell Orion 5x series SoCs:
388 Orion-1 (5181), Orion-NAS (5182), Orion-2 (5281.)
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400389
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100390config ARCH_PNX4008
391 bool "Philips Nexperia PNX4008 Mobile"
392 help
393 This enables support for Philips PNX4008 mobile platform.
394
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700396 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100397 depends on MMU
Al Viro034d2f52005-12-19 16:27:59 -0500398 select ARCH_MTD_XIP
David Brownell0a938b92007-03-05 00:30:18 -0800399 select GENERIC_GPIO
Philipp Zabel1c44f5f2008-02-04 22:28:22 -0800400 select HAVE_GPIO_LIB
Nicolas Pitre45cf5ee2007-02-05 22:37:07 +0100401 select GENERIC_TIME
Eric Miao981d0f32007-07-24 01:22:43 +0100402 select GENERIC_CLOCKEVENTS
Russell Kinga88264c2007-11-12 22:45:16 +0000403 select TICK_ONESHOT
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000404 help
eric miao2c8086a2007-09-11 19:13:17 -0700405 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406
407config ARCH_RPC
408 bool "RiscPC"
409 select ARCH_ACORN
410 select FIQ
411 select TIMER_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100412 select ARCH_MAY_HAVE_PC_FDC
Russell King065909b2006-01-04 15:44:16 +0000413 select ISA_DMA_API
Al Viro5ea81762007-02-11 15:41:31 +0000414 select NO_IOPORT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415 help
416 On the Acorn Risc-PC, Linux can support the internal IDE disk and
417 CD-ROM interface, serial and parallel port, and the floppy drive.
418
419config ARCH_SA1100
420 bool "SA1100-based"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100421 select ISA
Russell King3cd9e192005-06-25 19:29:34 +0100422 select ARCH_DISCONTIGMEM_ENABLE
Russell King05944d72006-11-30 20:43:51 +0000423 select ARCH_SPARSEMEM_ENABLE
424 select ARCH_SELECT_MEMORY_MODEL
Al Viro034d2f52005-12-19 16:27:59 -0500425 select ARCH_MTD_XIP
David Brownell0a938b92007-03-05 00:30:18 -0800426 select GENERIC_GPIO
Russell Kingd142b6e2007-11-12 21:55:12 +0000427 select GENERIC_TIME
Russell King3e238be2008-04-14 23:03:10 +0100428 select GENERIC_CLOCKEVENTS
429 select TICK_ONESHOT
Dmitry Baryshkov45528e32008-04-10 13:31:47 +0100430 select HAVE_GPIO_LIB
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000431 help
432 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433
434config ARCH_S3C2410
Ben Dookse4d06e32007-02-16 12:12:31 +0100435 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
David Brownell0a938b92007-03-05 00:30:18 -0800436 select GENERIC_GPIO
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 help
438 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
439 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000440 the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441
442config ARCH_SHARK
443 bool "Shark"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100444 select ISA
445 select ISA_DMA
446 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000447 help
448 Support for the StrongARM based Digital DNARD machine, also known
449 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450
451config ARCH_LH7A40X
452 bool "Sharp LH7A40X"
453 help
454 Say Y here for systems based on one of the Sharp LH7A40X
455 System on a Chip processors. These CPUs include an ARM922T
456 core with a wide array of integrated devices for
457 hand-held and low-power applications.
458
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100459config ARCH_DAVINCI
460 bool "TI DaVinci"
461 select GENERIC_TIME
462 select GENERIC_CLOCKEVENTS
Vladimir Barinov3d9edf02007-07-10 13:03:43 +0100463 select GENERIC_GPIO
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100464 help
465 Support for TI's DaVinci platform.
466
Russell King3b938be2007-05-12 11:25:44 +0100467config ARCH_OMAP
468 bool "TI OMAP"
469 select GENERIC_GPIO
David Brownell52e31342008-03-03 12:43:23 -0800470 select HAVE_GPIO_LIB
Russell King3b938be2007-05-12 11:25:44 +0100471 select GENERIC_TIME
Kevin Hilman06cad092007-10-18 23:04:43 -0700472 select GENERIC_CLOCKEVENTS
Russell King3b938be2007-05-12 11:25:44 +0100473 help
474 Support for TI's OMAP platform (OMAP1 and OMAP2).
475
Brian Swetland30421022007-11-26 04:11:43 -0800476config ARCH_MSM7X00A
477 bool "Qualcomm MSM7X00A"
478 select GENERIC_TIME
479 select GENERIC_CLOCKEVENTS
480 help
481 Support for Qualcomm MSM7X00A based systems. This runs on the ARM11
482 apps processor of the MSM7X00A and depends on a shared memory
483 interface to the ARM9 modem processor which runs the baseband stack
484 and controls some vital subsystems (clock and power control, etc).
485 <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp>
486
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487endchoice
488
489source "arch/arm/mach-clps711x/Kconfig"
490
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000491source "arch/arm/mach-ep93xx/Kconfig"
492
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493source "arch/arm/mach-footbridge/Kconfig"
494
495source "arch/arm/mach-integrator/Kconfig"
496
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100497source "arch/arm/mach-iop32x/Kconfig"
498
499source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500
Dan Williams285f5fa2006-12-07 02:59:39 +0100501source "arch/arm/mach-iop13xx/Kconfig"
502
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503source "arch/arm/mach-ixp4xx/Kconfig"
504
505source "arch/arm/mach-ixp2000/Kconfig"
506
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100507source "arch/arm/mach-ixp23xx/Kconfig"
508
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509source "arch/arm/mach-pxa/Kconfig"
510
511source "arch/arm/mach-sa1100/Kconfig"
512
Tony Lindgrend48af152005-07-10 19:58:17 +0100513source "arch/arm/plat-omap/Kconfig"
514
515source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516
Tony Lindgren1dbae812005-11-10 14:26:51 +0000517source "arch/arm/mach-omap2/Kconfig"
518
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400519source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400520
Ben Dooksa21765a2007-02-11 18:31:01 +0100521source "arch/arm/plat-s3c24xx/Kconfig"
Ben Dooksd58153d2007-07-22 16:07:09 +0100522source "arch/arm/plat-s3c/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100523
524if ARCH_S3C2410
525source "arch/arm/mach-s3c2400/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526source "arch/arm/mach-s3c2410/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100527source "arch/arm/mach-s3c2412/Kconfig"
528source "arch/arm/mach-s3c2440/Kconfig"
529source "arch/arm/mach-s3c2442/Kconfig"
Ben Dookse4d06e32007-02-16 12:12:31 +0100530source "arch/arm/mach-s3c2443/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100531endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532
533source "arch/arm/mach-lh7a40x/Kconfig"
534
535source "arch/arm/mach-imx/Kconfig"
536
537source "arch/arm/mach-h720x/Kconfig"
538
539source "arch/arm/mach-versatile/Kconfig"
540
Bellido Nicolas038c5b62005-06-20 18:51:05 +0100541source "arch/arm/mach-aaec2000/Kconfig"
542
Catalin Marinas8ad68bb2005-10-31 14:25:02 +0000543source "arch/arm/mach-realview/Kconfig"
544
Andrew Victor9d041262007-02-05 11:42:07 +0100545source "arch/arm/mach-at91/Kconfig"
SAN People73a59c12006-01-09 17:05:41 +0000546
Quinn Jensen52c543f2007-07-09 22:06:53 +0100547source "arch/arm/plat-mxc/Kconfig"
548
Sascha Hauerbb6d8c82006-06-19 15:27:53 +0100549source "arch/arm/mach-netx/Kconfig"
550
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100551source "arch/arm/mach-ns9xxx/Kconfig"
552
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100553source "arch/arm/mach-davinci/Kconfig"
554
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100555source "arch/arm/mach-ks8695/Kconfig"
556
Brian Swetland9e73c842007-11-26 04:12:13 -0800557source "arch/arm/mach-msm/Kconfig"
558
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559# Definitions to make life easier
560config ARCH_ACORN
561 bool
562
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100563config PLAT_IOP
564 bool
565
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400566config PLAT_ORION
567 bool
568
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569source arch/arm/mm/Kconfig
570
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100571config IWMMXT
572 bool "Enable iWMMXt support"
Robert P. J. Day6340aa62007-02-17 19:05:24 +0100573 depends on CPU_XSCALE || CPU_XSC3
eric miao2c8086a2007-09-11 19:13:17 -0700574 default y if PXA27x || PXA3xx
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100575 help
576 Enable support for iWMMXt context switching at run time if
577 running on a CPU that supports it.
578
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
580config XSCALE_PMU
581 bool
582 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
583 default y
584
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +0100585if !MMU
586source "arch/arm/Kconfig-nommu"
587endif
588
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589endmenu
590
591source "arch/arm/common/Kconfig"
592
593config FORCE_MAX_ZONEORDER
594 int
595 depends on SA1111
596 default "9"
597
598menu "Bus support"
599
600config ARM_AMBA
601 bool
602
603config ISA
604 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 help
606 Find out whether you have ISA slots on your motherboard. ISA is the
607 name of a bus system, i.e. the way the CPU talks to the other stuff
608 inside your box. Other bus systems are PCI, EISA, MicroChannel
609 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
610 newer boards don't support it. If you have ISA, say Y, otherwise N.
611
Russell King065909b2006-01-04 15:44:16 +0000612# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613config ISA_DMA
614 bool
Russell King065909b2006-01-04 15:44:16 +0000615 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616
Russell King065909b2006-01-04 15:44:16 +0000617# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +0100618config ISA_DMA_API
619 bool
Al Viro5cae8412005-05-04 05:39:22 +0100620
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621config PCI
Mike Rapoporta0113a92007-11-25 08:55:34 +0100622 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623 help
624 Find out whether you have a PCI motherboard. PCI is the name of a
625 bus system, i.e. the way the CPU talks to the other stuff inside
626 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
627 VESA. If you have PCI, say Y, otherwise N.
628
Matthew Wilcox36e23592007-07-10 10:54:40 -0600629config PCI_SYSCALL
630 def_bool PCI
631
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632# Select the host bridge type
633config PCI_HOST_VIA82C505
634 bool
635 depends on PCI && ARCH_SHARK
636 default y
637
Mike Rapoporta0113a92007-11-25 08:55:34 +0100638config PCI_HOST_ITE8152
639 bool
640 depends on PCI && MACH_ARMCORE
641 default y
642 select DMABOUNCE
643
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644source "drivers/pci/Kconfig"
645
646source "drivers/pcmcia/Kconfig"
647
648endmenu
649
650menu "Kernel Features"
651
Kevin Hilman0567a0c2007-03-13 20:29:24 +0100652source "kernel/time/Kconfig"
653
Linus Torvalds1da177e2005-04-16 15:20:36 -0700654config SMP
655 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
Bahadir Balban78fdcb42008-04-18 22:43:14 +0100656 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657 help
658 This enables support for systems with more than one CPU. If you have
659 a system with only one CPU, like most personal computers, say N. If
660 you have a system with more than one CPU, say Y.
661
662 If you say N here, the kernel will run on single and multiprocessor
663 machines, but will use only one CPU of a multiprocessor machine. If
664 you say Y here, the kernel will run on many, but not all, single
665 processor machines. On a single processor machine, the kernel will
666 run faster if you say N here.
667
Adrian Bunk03502fa2008-02-03 15:50:21 +0200668 See also <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
670 <http://www.linuxdoc.org/docs.html#howto>.
671
672 If you don't know what to do here, say N.
673
674config NR_CPUS
675 int "Maximum number of CPUs (2-32)"
676 range 2 32
677 depends on SMP
678 default "4"
679
Russell Kinga054a812005-11-02 22:24:33 +0000680config HOTPLUG_CPU
681 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
682 depends on SMP && HOTPLUG && EXPERIMENTAL
683 help
684 Say Y here to experiment with turning CPUs off and on. CPUs
685 can be controlled through /sys/devices/system/cpu.
686
Russell King37ee16a2005-11-08 19:08:05 +0000687config LOCAL_TIMERS
688 bool "Use local timer interrupts"
Bahadir Balban78fdcb42008-04-18 22:43:14 +0100689 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
Russell King37ee16a2005-11-08 19:08:05 +0000690 default y
691 help
692 Enable support for local timers on SMP platforms, rather then the
693 legacy IPI broadcast method. Local timers allows the system
694 accounting to be spread across the timer interval, preventing a
695 "thundering herd" at every timer tick.
696
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697config PREEMPT
698 bool "Preemptible Kernel (EXPERIMENTAL)"
699 depends on EXPERIMENTAL
700 help
701 This option reduces the latency of the kernel when reacting to
702 real-time or interactive events by allowing a low priority process to
703 be preempted even if it is in kernel mode executing a system call.
704 This allows applications to run more reliably even when the system is
705 under load.
706
707 Say Y here if you are building a kernel for a desktop, embedded
708 or real-time system. Say N if you are unsure.
709
Russell King8749af62005-06-25 19:39:45 +0100710config NO_IDLE_HZ
711 bool "Dynamic tick timer"
Kevin Hilman0567a0c2007-03-13 20:29:24 +0100712 depends on !GENERIC_CLOCKEVENTS
Russell King8749af62005-06-25 19:39:45 +0100713 help
714 Select this option if you want to disable continuous timer ticks
715 and have them programmed to occur as required. This option saves
716 power as the system can remain in idle state for longer.
717
718 By default dynamic tick is disabled during the boot, and can be
719 manually enabled with:
720
721 echo 1 > /sys/devices/system/timer/timer0/dyn_tick
722
723 Alternatively, if you want dynamic tick automatically enabled
724 during boot, pass "dyntick=enable" via the kernel command string.
725
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100726 Please note that dynamic tick may affect the accuracy of
727 timekeeping on some platforms depending on the implementation.
Nicolas Pitre569d2c32005-09-01 12:48:48 +0100728 Currently at least OMAP, PXA2xx and SA11x0 platforms are known
729 to have accurate timekeeping with dynamic tick.
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100730
Russell Kingf8065812006-03-02 22:41:59 +0000731config HZ
732 int
733 default 128 if ARCH_L7200
734 default 200 if ARCH_EBSA110 || ARCH_S3C2410
Russell Kingbfe65702006-03-04 11:01:53 +0000735 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
David Brownell5248c652007-11-12 17:59:10 +0100736 default AT91_TIMER_HZ if ARCH_AT91
Russell Kingf8065812006-03-02 22:41:59 +0000737 default 100
738
Nicolas Pitre704bdda02006-01-14 16:33:50 +0000739config AEABI
740 bool "Use the ARM EABI to compile the kernel"
741 help
742 This option allows for the kernel to be compiled using the latest
743 ARM ABI (aka EABI). This is only useful if you are using a user
744 space environment that is also compiled with EABI.
745
746 Since there are major incompatibilities between the legacy ABI and
747 EABI, especially with regard to structure member alignment, this
748 option also changes the kernel syscall calling convention to
749 disambiguate both ABIs and allow for backward compatibility support
750 (selected with CONFIG_OABI_COMPAT).
751
752 To use this you need GCC version 4.0.0 or later.
753
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000754config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +0000755 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Nicolas Pitre61c484d2006-02-08 21:09:08 +0000756 depends on AEABI && EXPERIMENTAL
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000757 default y
758 help
759 This option preserves the old syscall interface along with the
760 new (ARM EABI) one. It also provides a compatibility layer to
761 intercept syscalls that have structure arguments which layout
762 in memory differs between the legacy ABI and the new ARM EABI
763 (only for non "thumb" binaries). This option adds a tiny
764 overhead to all syscalls and produces a slightly larger kernel.
765 If you know you'll be using only pure EABI user space then you
766 can say N here. If this option is not selected and you attempt
767 to execute a legacy ABI binary then the result will be
768 UNPREDICTABLE (in fact it can be predicted that it won't work
769 at all). If in doubt say Y.
770
Dave Hansen3f22ab22005-06-23 00:07:43 -0700771config ARCH_DISCONTIGMEM_ENABLE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700772 bool
Russell Kingf7e68bb2005-05-05 14:49:01 +0100773 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774 help
775 Say Y to support efficient handling of discontiguous physical memory,
776 for architectures which are either NUMA (Non-Uniform Memory Access)
777 or have huge holes in the physical address space for other reasons.
778 See <file:Documentation/vm/numa> for more.
779
Russell King05944d72006-11-30 20:43:51 +0000780config ARCH_SPARSEMEM_ENABLE
781 bool
782
783config ARCH_SELECT_MEMORY_MODEL
784 bool
785
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700786config NODES_SHIFT
787 int
788 default "4" if ARCH_LH7A40X
789 default "2"
790 depends on NEED_MULTIPLE_NODES
791
Dave Hansen3f22ab22005-06-23 00:07:43 -0700792source "mm/Kconfig"
793
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794config LEDS
795 bool "Timer and CPU usage LEDs"
796 depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
797 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
798 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
799 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
SAN People73a59c12006-01-09 17:05:41 +0000800 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100801 ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
Ronen Shitrit817eb212007-10-17 14:51:34 -0400802 ARCH_KS8695 || MACH_RD88F5182
Linus Torvalds1da177e2005-04-16 15:20:36 -0700803 help
804 If you say Y here, the LEDs on your machine will be used
805 to provide useful information about your current system status.
806
807 If you are compiling a kernel for a NetWinder or EBSA-285, you will
808 be able to select which LEDs are active using the options below. If
809 you are compiling a kernel for the EBSA-110 or the LART however, the
810 red LED will simply flash regularly to indicate that the system is
811 still functional. It is safe to say Y here if you have a CATS
812 system, but the driver will do nothing.
813
814config LEDS_TIMER
815 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
David Brownelleebdf7d72007-04-02 12:48:10 -0700816 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
817 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -0700818 depends on LEDS
Kevin Hilman0567a0c2007-03-13 20:29:24 +0100819 depends on !GENERIC_CLOCKEVENTS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820 default y if ARCH_EBSA110
821 help
822 If you say Y here, one of the system LEDs (the green one on the
823 NetWinder, the amber one on the EBSA285, or the red one on the LART)
824 will flash regularly to indicate that the system is still
825 operational. This is mainly useful to kernel hackers who are
826 debugging unstable kernels.
827
828 The LART uses the same LED for both Timer LED and CPU usage LED
829 functions. You may choose to use both, but the Timer LED function
830 will overrule the CPU usage LED.
831
832config LEDS_CPU
833 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
David Brownelleebdf7d72007-04-02 12:48:10 -0700834 !ARCH_OMAP) \
835 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
836 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837 depends on LEDS
838 help
839 If you say Y here, the red LED will be used to give a good real
840 time indication of CPU usage, by lighting whenever the idle task
841 is not currently executing.
842
843 The LART uses the same LED for both Timer LED and CPU usage LED
844 functions. You may choose to use both, but the Timer LED function
845 will overrule the CPU usage LED.
846
847config ALIGNMENT_TRAP
848 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +0900849 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850 default y if !ARCH_EBSA110
851 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +0200852 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
854 address divisible by 4. On 32-bit ARM processors, these non-aligned
855 fetch/store instructions will be emulated in software if you say
856 here, which has a severe performance impact. This is necessary for
857 correct operation of some network protocols. With an IP-only
858 configuration it is safe to say N, otherwise say Y.
859
860endmenu
861
862menu "Boot options"
863
864# Compressed boot loader in ROM. Yes, we really want to ask about
865# TEXT and BSS so we preserve their values in the config files.
866config ZBOOT_ROM_TEXT
867 hex "Compressed ROM boot loader base address"
868 default "0"
869 help
870 The physical address at which the ROM-able zImage is to be
871 placed in the target. Platforms which normally make use of
872 ROM-able zImage formats normally set this to a suitable
873 value in their defconfig file.
874
875 If ZBOOT_ROM is not enabled, this has no effect.
876
877config ZBOOT_ROM_BSS
878 hex "Compressed ROM boot loader BSS address"
879 default "0"
880 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +0100881 The base address of an area of read/write memory in the target
882 for the ROM-able zImage which must be available while the
883 decompressor is running. It must be large enough to hold the
884 entire decompressed kernel plus an additional 128 KiB.
885 Platforms which normally make use of ROM-able zImage formats
886 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887
888 If ZBOOT_ROM is not enabled, this has no effect.
889
890config ZBOOT_ROM
891 bool "Compressed boot loader in ROM/flash"
892 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
893 help
894 Say Y here if you intend to execute your compressed kernel image
895 (zImage) directly from ROM or flash. If unsure, say N.
896
897config CMDLINE
898 string "Default kernel command string"
899 default ""
900 help
901 On some architectures (EBSA110 and CATS), there is currently no way
902 for the boot loader to pass arguments to the kernel. For these
903 architectures, you should supply some command-line options at build
904 time by entering them here. As a minimum, you should specify the
905 memory size and the root device (e.g., mem=64M root=/dev/nfs).
906
907config XIP_KERNEL
908 bool "Kernel Execute-In-Place from ROM"
909 depends on !ZBOOT_ROM
910 help
911 Execute-In-Place allows the kernel to run from non-volatile storage
912 directly addressable by the CPU, such as NOR flash. This saves RAM
913 space since the text section of the kernel is not loaded from flash
914 to RAM. Read-write sections, such as the data section and stack,
915 are still copied to RAM. The XIP kernel is not compressed since
916 it has to run directly from flash, so it will take more space to
917 store it. The flash address used to link the kernel object files,
918 and for storing it, is configuration dependent. Therefore, if you
919 say Y here, you must know the proper physical address where to
920 store the kernel image depending on your own flash memory usage.
921
922 Also note that the make target becomes "make xipImage" rather than
923 "make zImage" or "make Image". The final kernel binary to put in
924 ROM memory will be arch/arm/boot/xipImage.
925
926 If unsure, say N.
927
928config XIP_PHYS_ADDR
929 hex "XIP Kernel Physical Location"
930 depends on XIP_KERNEL
931 default "0x00080000"
932 help
933 This is the physical address in your flash memory the kernel will
934 be linked for and stored to. This address is dependent on your
935 own flash usage.
936
Richard Purdiec587e4a2007-02-06 21:29:00 +0100937config KEXEC
938 bool "Kexec system call (EXPERIMENTAL)"
939 depends on EXPERIMENTAL
940 help
941 kexec is a system call that implements the ability to shutdown your
942 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +0200943 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +0100944 you can start any kernel with it, not just Linux.
945
946 It is an ongoing process to be certain the hardware in a machine
947 is properly shutdown, so do not be surprised if this code does not
948 initially work for you. It may help to enable device hotplugging
949 support.
950
Richard Purdie4cd9d6f2008-01-02 00:56:46 +0100951config ATAGS_PROC
952 bool "Export atags in procfs"
Uli Luckasb98d7292008-02-22 16:45:18 +0100953 depends on KEXEC
954 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +0100955 help
956 Should the atags used to boot the kernel be exported in an "atags"
957 file in procfs. Useful with kexec.
958
Linus Torvalds1da177e2005-04-16 15:20:36 -0700959endmenu
960
Russell King9e2697f2007-12-14 13:30:14 +0000961if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700962
963menu "CPU Frequency scaling"
964
965source "drivers/cpufreq/Kconfig"
966
967config CPU_FREQ_SA1100
968 bool
Vincent Sanders07c6d482005-06-09 21:59:22 +0100969 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700970 default y
971
972config CPU_FREQ_SA1110
973 bool
974 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
975 default y
976
977config CPU_FREQ_INTEGRATOR
978 tristate "CPUfreq driver for ARM Integrator CPUs"
979 depends on ARCH_INTEGRATOR && CPU_FREQ
980 default y
981 help
982 This enables the CPUfreq driver for ARM Integrator CPUs.
983
984 For details, take a look at <file:Documentation/cpu-freq>.
985
986 If in doubt, say Y.
987
Pavel Pisa3c8cd0c2006-12-06 17:25:04 +0100988config CPU_FREQ_IMX
989 tristate "CPUfreq driver for i.MX CPUs"
990 depends on ARCH_IMX && CPU_FREQ
991 default n
992 help
993 This enables the CPUfreq driver for i.MX CPUs.
994
995 If in doubt, say N.
996
Russell King9e2697f2007-12-14 13:30:14 +0000997config CPU_FREQ_PXA
998 bool
999 depends on CPU_FREQ && ARCH_PXA && PXA25x
1000 default y
1001 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1002
Linus Torvalds1da177e2005-04-16 15:20:36 -07001003endmenu
1004
1005endif
1006
1007menu "Floating point emulation"
1008
1009comment "At least one emulation must be selected"
1010
1011config FPE_NWFPE
1012 bool "NWFPE math emulation"
Nicolas Pitre8993a442006-01-14 16:36:50 +00001013 depends on !AEABI || OABI_COMPAT
Linus Torvalds1da177e2005-04-16 15:20:36 -07001014 ---help---
1015 Say Y to include the NWFPE floating point emulator in the kernel.
1016 This is necessary to run most binaries. Linux does not currently
1017 support floating point hardware so you need to say Y here even if
1018 your machine has an FPA or floating point co-processor podule.
1019
1020 You may say N here if you are going to load the Acorn FPEmulator
1021 early in the bootup.
1022
1023config FPE_NWFPE_XP
1024 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00001025 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07001026 help
1027 Say Y to include 80-bit support in the kernel floating-point
1028 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1029 Note that gcc does not generate 80-bit operations by default,
1030 so in most cases this option only enlarges the size of the
1031 floating point emulator without any good reason.
1032
1033 You almost surely want to say N here.
1034
1035config FPE_FASTFPE
1036 bool "FastFPE math emulation (EXPERIMENTAL)"
Nicolas Pitre8993a442006-01-14 16:36:50 +00001037 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001038 ---help---
1039 Say Y here to include the FAST floating point emulator in the kernel.
1040 This is an experimental much faster emulator which now also has full
1041 precision for the mantissa. It does not support any exceptions.
1042 It is very simple, and approximately 3-6 times faster than NWFPE.
1043
1044 It should be sufficient for most programs. It may be not suitable
1045 for scientific calculations, but you have to check this for yourself.
1046 If you do not feel you need a faster FP emulation you should better
1047 choose NWFPE.
1048
1049config VFP
1050 bool "VFP-format floating point maths"
Russell Kingc00d4ff2008-01-28 13:21:30 +00001051 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07001052 help
1053 Say Y to include VFP support code in the kernel. This is needed
1054 if your hardware includes a VFP unit.
1055
1056 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1057 release notes and additional status information.
1058
1059 Say N if your target does not have VFP hardware.
1060
Catalin Marinas25ebee02007-09-25 15:22:24 +01001061config VFPv3
1062 bool
1063 depends on VFP
1064 default y if CPU_V7
1065
Catalin Marinasb5872db2008-01-10 19:16:17 +01001066config NEON
1067 bool "Advanced SIMD (NEON) Extension support"
1068 depends on VFPv3 && CPU_V7
1069 help
1070 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1071 Extension.
1072
Linus Torvalds1da177e2005-04-16 15:20:36 -07001073endmenu
1074
1075menu "Userspace binary formats"
1076
1077source "fs/Kconfig.binfmt"
1078
1079config ARTHUR
1080 tristate "RISC OS personality"
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001081 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001082 help
1083 Say Y here to include the kernel code necessary if you want to run
1084 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1085 experimental; if this sounds frightening, say N and sleep in peace.
1086 You can also say M here to compile this support as a module (which
1087 will be called arthur).
1088
1089endmenu
1090
1091menu "Power management options"
1092
Russell Kingeceab4a2005-11-15 11:31:41 +00001093source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001094
Johannes Bergf4cb5702007-12-08 02:14:00 +01001095config ARCH_SUSPEND_POSSIBLE
1096 def_bool y
1097
Linus Torvalds1da177e2005-04-16 15:20:36 -07001098endmenu
1099
Sam Ravnborgd5950b42005-07-11 21:03:49 -07001100source "net/Kconfig"
1101
Linus Torvalds1da177e2005-04-16 15:20:36 -07001102menu "Device Drivers"
1103
1104source "drivers/base/Kconfig"
1105
Pavel Machekc35bf4a2005-11-12 20:25:25 +00001106source "drivers/connector/Kconfig"
1107
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001108if ALIGNMENT_TRAP || !CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001109source "drivers/mtd/Kconfig"
1110endif
1111
1112source "drivers/parport/Kconfig"
1113
1114source "drivers/pnp/Kconfig"
1115
1116source "drivers/block/Kconfig"
1117
Russell King58273e52007-10-12 22:24:09 +01001118# misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1119
1120source "drivers/misc/Kconfig"
1121
Linus Torvalds1da177e2005-04-16 15:20:36 -07001122source "drivers/ide/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001123
1124source "drivers/scsi/Kconfig"
1125
Martin Michlmayreb370f02006-11-17 00:14:35 +01001126source "drivers/ata/Kconfig"
1127
Linus Torvalds1da177e2005-04-16 15:20:36 -07001128source "drivers/md/Kconfig"
1129
1130source "drivers/message/fusion/Kconfig"
1131
1132source "drivers/ieee1394/Kconfig"
1133
1134source "drivers/message/i2o/Kconfig"
1135
Sam Ravnborgd5950b42005-07-11 21:03:49 -07001136source "drivers/net/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001137
1138source "drivers/isdn/Kconfig"
1139
1140# input before char - char/joystick depends on it. As does USB.
1141
1142source "drivers/input/Kconfig"
1143
1144source "drivers/char/Kconfig"
1145
1146source "drivers/i2c/Kconfig"
1147
David Brownell8ae12a02006-01-08 13:34:19 -08001148source "drivers/spi/Kconfig"
1149
David Brownella9c5fff2008-02-04 22:28:17 -08001150source "drivers/gpio/Kconfig"
1151
Alessandro Zummo04916c02006-03-10 22:30:01 +00001152source "drivers/w1/Kconfig"
1153
Russell King58273e52007-10-12 22:24:09 +01001154source "drivers/power/Kconfig"
1155
Jean Delvaread2f9312005-07-02 18:15:49 +02001156source "drivers/hwmon/Kconfig"
1157
Russell King70dfa3f2007-11-07 14:13:35 +00001158source "drivers/watchdog/Kconfig"
1159
Russell King58273e52007-10-12 22:24:09 +01001160source "drivers/ssb/Kconfig"
1161
Linus Torvalds1da177e2005-04-16 15:20:36 -07001162#source "drivers/l3/Kconfig"
1163
Russell Kinga4e137a2005-08-18 10:06:59 +01001164source "drivers/mfd/Kconfig"
1165
Linus Torvalds1da177e2005-04-16 15:20:36 -07001166source "drivers/media/Kconfig"
1167
1168source "drivers/video/Kconfig"
1169
1170source "sound/Kconfig"
1171
Sascha Hauerc2dade52006-12-12 10:32:42 +01001172source "drivers/hid/Kconfig"
1173
Linus Torvalds1da177e2005-04-16 15:20:36 -07001174source "drivers/usb/Kconfig"
1175
1176source "drivers/mmc/Kconfig"
1177
Russell King58273e52007-10-12 22:24:09 +01001178source "drivers/leds/Kconfig"
1179
Alessandro Zummo12b824f2006-03-27 01:16:35 -08001180source "drivers/rtc/Kconfig"
1181
Dan Williams58168152007-01-02 11:10:43 -07001182source "drivers/dma/Kconfig"
1183
Dan Williamsabf07b12008-01-18 23:26:10 +01001184source "drivers/dca/Kconfig"
1185
Hans-Jürgen Koch2dc034a2008-02-19 21:07:19 +01001186source "drivers/uio/Kconfig"
1187
Linus Torvalds1da177e2005-04-16 15:20:36 -07001188endmenu
1189
1190source "fs/Kconfig"
1191
Linus Torvalds1da177e2005-04-16 15:20:36 -07001192source "arch/arm/Kconfig.debug"
1193
1194source "security/Kconfig"
1195
1196source "crypto/Kconfig"
1197
1198source "lib/Kconfig"