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Linus Torvalds1da177e2005-04-16 15:20:36 -07001config ARM
2 bool
3 default y
David Woodhousee17c6d52008-06-17 12:19:34 +01004 select HAVE_AOUT
Russell King24056f52011-01-03 11:29:28 +00005 select HAVE_DMA_API_DEBUG
Adrian Bunk2064c942008-04-28 23:44:43 +02006 select HAVE_IDE
Russell King2778f622010-07-09 16:27:52 +01007 select HAVE_MEMBLOCK
Alessandro Zummo12b824f2006-03-27 01:16:35 -08008 select RTC_LIB
Ralf Baechle75e71532007-02-09 17:08:58 +00009 select SYS_SUPPORTS_APM_EMULATION
Russell Kinga41297a2011-01-17 15:48:33 +000010 select GENERIC_ATOMIC64 if (CPU_V6 || !CPU_32v6K || !AEABI)
Will Deaconfe166142010-04-30 11:37:51 +010011 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
Jason Wessel5cbad0e2008-02-20 13:33:40 -060012 select HAVE_ARCH_KGDB
Dave Martined7c84d2010-11-29 19:43:29 +010013 select HAVE_KPROBES if (!XIP_KERNEL && !THUMB2_KERNEL)
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080014 select HAVE_KRETPROBES if (HAVE_KPROBES)
Steven Rostedt606576c2008-10-06 19:06:12 -040015 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
Rabin Vincent80be7a72010-08-10 19:58:17 +010016 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
17 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
Rabin Vincent0e341af2010-11-06 23:03:53 +053018 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
Dmitry Baryshkov1fe53262008-07-18 13:30:14 +040019 select HAVE_GENERIC_DMA_COHERENT
Albin Tonnerree7db7b42010-01-08 14:42:43 -080020 select HAVE_KERNEL_GZIP
21 select HAVE_KERNEL_LZO
Albin Tonnerre6e8699f2010-04-03 11:40:28 +010022 select HAVE_KERNEL_LZMA
Peter Zijlstrae360adb2010-10-14 14:01:34 +080023 select HAVE_IRQ_WORK
Jamie Iles7ada1892010-02-02 20:24:58 +010024 select HAVE_PERF_EVENTS
25 select PERF_USE_VMALLOC
Will Deacone513f8b2010-06-25 12:24:53 +010026 select HAVE_REGS_AND_STACK_ACCESS_API
Russell Kinge399b1a2011-01-17 15:08:32 +000027 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
Rabin Vincented604532010-11-30 17:36:48 +010028 select HAVE_C_RECORDMCOUNT
Lennert Buytenheke2a93ec2010-11-29 10:06:57 +010029 select HAVE_GENERIC_HARDIRQS
30 select HAVE_SPARSE_IRQ
Thomas Gleixner25a56622011-03-24 12:02:11 +010031 select GENERIC_IRQ_SHOW
Linus Torvalds1da177e2005-04-16 15:20:36 -070032 help
33 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000034 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070035 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000036 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070037 Europe. There is an ARM Linux project with a web page at
38 <http://www.arm.linux.org.uk/>.
39
Russell King1a189b92008-04-13 21:41:55 +010040config HAVE_PWM
41 bool
42
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +010043config MIGHT_HAVE_PCI
44 bool
45
Ralf Baechle75e71532007-02-09 17:08:58 +000046config SYS_SUPPORTS_APM_EMULATION
47 bool
48
Russell King112f38a42010-12-15 19:23:07 +000049config HAVE_SCHED_CLOCK
50 bool
51
David Brownell0a938b92007-03-05 00:30:18 -080052config GENERIC_GPIO
53 bool
David Brownell0a938b92007-03-05 00:30:18 -080054
John Stultz5cfc8ee2010-03-24 00:22:36 +000055config ARCH_USES_GETTIMEOFFSET
56 bool
57 default n
Kevin Hilman746140c2006-09-22 00:16:30 +010058
Kevin Hilman0567a0c2007-03-13 20:29:24 +010059config GENERIC_CLOCKEVENTS
60 bool
Kevin Hilman0567a0c2007-03-13 20:29:24 +010061
Catalin Marinasa8655e82008-02-04 17:30:57 +010062config GENERIC_CLOCKEVENTS_BROADCAST
63 bool
64 depends on GENERIC_CLOCKEVENTS
Russell King5388a6b2010-07-26 13:19:43 +010065 default y if SMP
Catalin Marinasa8655e82008-02-04 17:30:57 +010066
Rob Herringbf9dd362011-03-04 23:51:59 +010067config KTIME_SCALAR
68 bool
69 default y
70
Linus Walleijbc581772009-09-15 17:30:37 +010071config HAVE_TCM
72 bool
73 select GENERIC_ALLOCATOR
74
Russell Kinge119bff2010-01-10 17:23:29 +000075config HAVE_PROC_CPU
76 bool
77
Al Viro5ea81762007-02-11 15:41:31 +000078config NO_IOPORT
79 bool
Al Viro5ea81762007-02-11 15:41:31 +000080
Linus Torvalds1da177e2005-04-16 15:20:36 -070081config EISA
82 bool
83 ---help---
84 The Extended Industry Standard Architecture (EISA) bus was
85 developed as an open alternative to the IBM MicroChannel bus.
86
87 The EISA bus provided some of the features of the IBM MicroChannel
88 bus while maintaining backward compatibility with cards made for
89 the older ISA bus. The EISA bus saw limited use between 1988 and
90 1995 when it was made obsolete by the PCI bus.
91
92 Say Y here if you are building a kernel for an EISA-based machine.
93
94 Otherwise, say N.
95
96config SBUS
97 bool
98
99config MCA
100 bool
101 help
102 MicroChannel Architecture is found in some IBM PS/2 machines and
103 laptops. It is a bus system similar to PCI or ISA. See
104 <file:Documentation/mca.txt> (and especially the web page given
105 there) before attempting to build an MCA bus kernel.
106
Russell Kingf16fb1e2007-04-28 09:59:37 +0100107config STACKTRACE_SUPPORT
108 bool
109 default y
110
Nicolas Pitref76e9152008-04-24 01:31:46 -0400111config HAVE_LATENCYTOP_SUPPORT
112 bool
113 depends on !SMP
114 default y
115
Russell Kingf16fb1e2007-04-28 09:59:37 +0100116config LOCKDEP_SUPPORT
117 bool
118 default y
119
Russell King7ad1bcb2006-08-27 12:07:02 +0100120config TRACE_IRQFLAGS_SUPPORT
121 bool
122 default y
123
Thomas Gleixner4a2581a2006-07-01 22:30:09 +0100124config HARDIRQS_SW_RESEND
125 bool
126 default y
127
128config GENERIC_IRQ_PROBE
129 bool
130 default y
131
Nick Piggin95c354f2008-01-30 13:31:20 +0100132config GENERIC_LOCKBREAK
133 bool
134 default y
135 depends on SMP && PREEMPT
136
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137config RWSEM_GENERIC_SPINLOCK
138 bool
139 default y
140
141config RWSEM_XCHGADD_ALGORITHM
142 bool
143
David Howellsf0d1b0b2006-12-08 02:37:49 -0800144config ARCH_HAS_ILOG2_U32
145 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800146
147config ARCH_HAS_ILOG2_U64
148 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800149
Ben Dooks89c52ed2009-07-30 23:23:24 +0100150config ARCH_HAS_CPUFREQ
151 bool
152 help
153 Internal node to signify that the ARCH has CPUFREQ support
154 and that the relevant menu configurations are displayed for
155 it.
156
Kevin Hilmanc7b0aff2010-10-01 22:13:47 +0100157config ARCH_HAS_CPU_IDLE_WAIT
158 def_bool y
159
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800160config GENERIC_HWEIGHT
161 bool
162 default y
163
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164config GENERIC_CALIBRATE_DELAY
165 bool
166 default y
167
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100168config ARCH_MAY_HAVE_PC_FDC
169 bool
170
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800171config ZONE_DMA
172 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800173
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800174config NEED_DMA_MAP_STATE
175 def_bool y
176
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177config GENERIC_ISA_DMA
178 bool
179
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180config FIQ
181 bool
182
Al Viro034d2f52005-12-19 16:27:59 -0500183config ARCH_MTD_XIP
184 bool
185
Hyok S. Choic760fc12006-03-27 15:18:50 +0100186config VECTORS_BASE
187 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900188 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100189 default DRAM_BASE if REMAP_VECTORS_TO_RAM
190 default 0x00000000
191 help
192 The base address of exception vectors.
193
Russell Kingdc21af92011-01-04 19:09:43 +0000194config ARM_PATCH_PHYS_VIRT
195 bool "Patch physical to virtual translations at runtime (EXPERIMENTAL)"
196 depends on EXPERIMENTAL
Nicolas Pitreb511d752011-02-21 06:53:35 +0100197 depends on !XIP_KERNEL && MMU
Russell Kingdc21af92011-01-04 19:09:43 +0000198 depends on !ARCH_REALVIEW || !SPARSEMEM
199 help
Russell King111e9a52011-05-12 10:02:42 +0100200 Patch phys-to-virt and virt-to-phys translation functions at
201 boot and module load time according to the position of the
202 kernel in system memory.
Russell Kingdc21af92011-01-04 19:09:43 +0000203
Russell King111e9a52011-05-12 10:02:42 +0100204 This can only be used with non-XIP MMU kernels where the base
205 of physical memory is at a 16MB boundary, or theoretically 64K
206 for the MSM machine class.
Russell Kingdc21af92011-01-04 19:09:43 +0000207
Russell Kingcada3c02011-01-04 19:39:29 +0000208config ARM_PATCH_PHYS_VIRT_16BIT
209 def_bool y
210 depends on ARM_PATCH_PHYS_VIRT && ARCH_MSM
Russell King111e9a52011-05-12 10:02:42 +0100211 help
212 This option extends the physical to virtual translation patching
213 to allow physical memory down to a theoretical minimum of 64K
214 boundaries.
Russell Kingcada3c02011-01-04 19:39:29 +0000215
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216source "init/Kconfig"
217
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700218source "kernel/Kconfig.freezer"
219
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220menu "System Type"
221
Hyok S. Choi3c427972009-07-24 12:35:00 +0100222config MMU
223 bool "MMU-based Paged Memory Management Support"
224 default y
225 help
226 Select if you want MMU-based virtualised addressing space
227 support by paged memory management. If unsure, say 'Y'.
228
Russell Kingccf50e22010-03-15 19:03:06 +0000229#
230# The "ARM system type" choice list is ordered alphabetically by option
231# text. Please add new entries in the option alphabetic order.
232#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233choice
234 prompt "ARM system type"
Catalin Marinas6a0e2432006-03-07 14:42:27 +0000235 default ARCH_VERSATILE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100237config ARCH_INTEGRATOR
238 bool "ARM Ltd. Integrator family"
239 select ARM_AMBA
Ben Dooks89c52ed2009-07-30 23:23:24 +0100240 select ARCH_HAS_CPUFREQ
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100241 select CLKDEV_LOOKUP
Russell Kingc5a0adb2010-01-16 20:16:10 +0000242 select ICST
Russell King13edd862010-01-15 21:49:23 +0000243 select GENERIC_CLOCKEVENTS
Russell Kingf4b8b312010-01-14 12:48:06 +0000244 select PLAT_VERSATILE
Russell Kingc41b16f2011-01-19 15:32:15 +0000245 select PLAT_VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100246 help
247 Support for ARM's Integrator platform.
248
249config ARCH_REALVIEW
250 bool "ARM Ltd. RealView family"
251 select ARM_AMBA
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100252 select CLKDEV_LOOKUP
Russell Kingc5a0adb2010-01-16 20:16:10 +0000253 select ICST
Catalin Marinasae30cea2008-02-04 17:26:55 +0100254 select GENERIC_CLOCKEVENTS
Russell Kingeb7fffa2009-07-05 22:41:31 +0100255 select ARCH_WANT_OPTIONAL_GPIOLIB
Russell Kingf4b8b312010-01-14 12:48:06 +0000256 select PLAT_VERSATILE
Russell King3cb5ee42011-01-18 20:13:20 +0000257 select PLAT_VERSATILE_CLCD
Russell Kinge3887712010-01-14 13:30:16 +0000258 select ARM_TIMER_SP804
Colin Tuckleyb56ba8a2010-02-24 15:23:10 +0100259 select GPIO_PL061 if GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100260 help
261 This enables support for ARM Ltd RealView boards.
262
263config ARCH_VERSATILE
264 bool "ARM Ltd. Versatile family"
265 select ARM_AMBA
266 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100267 select CLKDEV_LOOKUP
Russell Kingc5a0adb2010-01-16 20:16:10 +0000268 select ICST
Kevin Hilman89df1272007-03-08 20:30:38 +0100269 select GENERIC_CLOCKEVENTS
Russell Kingbbeddc42009-07-05 22:43:01 +0100270 select ARCH_WANT_OPTIONAL_GPIOLIB
Russell Kingf4b8b312010-01-14 12:48:06 +0000271 select PLAT_VERSATILE
Russell King3414ba82011-01-18 20:12:10 +0000272 select PLAT_VERSATILE_CLCD
Russell Kingc41b16f2011-01-19 15:32:15 +0000273 select PLAT_VERSATILE_FPGA_IRQ
Russell Kinge3887712010-01-14 13:30:16 +0000274 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100275 help
276 This enables support for ARM Ltd Versatile board.
277
Russell Kingceade892010-02-11 21:44:53 +0000278config ARCH_VEXPRESS
279 bool "ARM Ltd. Versatile Express family"
280 select ARCH_WANT_OPTIONAL_GPIOLIB
281 select ARM_AMBA
282 select ARM_TIMER_SP804
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100283 select CLKDEV_LOOKUP
Russell Kingceade892010-02-11 21:44:53 +0000284 select GENERIC_CLOCKEVENTS
Russell Kingceade892010-02-11 21:44:53 +0000285 select HAVE_CLK
Nick Bowler95c34f82011-01-21 15:51:06 +0100286 select HAVE_PATA_PLATFORM
Russell Kingceade892010-02-11 21:44:53 +0000287 select ICST
288 select PLAT_VERSATILE
Russell King0fb44b92011-01-18 20:13:51 +0000289 select PLAT_VERSATILE_CLCD
Russell Kingceade892010-02-11 21:44:53 +0000290 help
291 This enables support for the ARM Ltd Versatile Express boards.
292
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100293config ARCH_AT91
294 bool "Atmel AT91"
Ryan Mallonf373e8c2009-02-10 21:02:08 +0100295 select ARCH_REQUIRE_GPIOLIB
David Brownell93686ae2008-07-28 15:46:22 -0700296 select HAVE_CLK
Jean-Christophe PLAGNIOL-VILLARDbd602992011-02-02 07:27:07 +0100297 select CLKDEV_LOOKUP
Jean-Christophe PLAGNIOL-VILLARD3d51f252011-05-03 00:44:58 +0800298 select ARM_PATCH_PHYS_VIRT if MMU
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100299 help
Andrew Victor2b3b3512008-01-24 15:10:39 +0100300 This enables support for systems based on the Atmel AT91RM9200,
301 AT91SAM9 and AT91CAP9 processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100302
Russell Kingccf50e22010-03-15 19:03:06 +0000303config ARCH_BCMRING
304 bool "Broadcom BCMRING"
305 depends on MMU
306 select CPU_V6
307 select ARM_AMBA
Russell King82d63732011-05-12 13:43:39 +0100308 select ARM_TIMER_SP804
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100309 select CLKDEV_LOOKUP
Russell Kingccf50e22010-03-15 19:03:06 +0000310 select GENERIC_CLOCKEVENTS
311 select ARCH_WANT_OPTIONAL_GPIOLIB
312 help
313 Support for Broadcom's BCMRing platform.
314
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315config ARCH_CLPS711X
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100316 bool "Cirrus Logic CLPS711x/EP721x-based"
Russell Kingc7508152008-10-26 10:55:14 +0000317 select CPU_ARM720T
John Stultz5cfc8ee2010-03-24 00:22:36 +0000318 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000319 help
320 Support for Cirrus Logic 711x/721x based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300322config ARCH_CNS3XXX
323 bool "Cavium Networks CNS3XXX family"
324 select CPU_V6
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300325 select GENERIC_CLOCKEVENTS
326 select ARM_GIC
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100327 select MIGHT_HAVE_PCI
Anton Vorontsov5f32f7a2010-05-28 13:10:52 +0400328 select PCI_DOMAINS if PCI
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300329 help
330 Support for Cavium Networks CNS3XXX platform.
331
Russell King788c9702009-04-26 14:21:59 +0100332config ARCH_GEMINI
333 bool "Cortina Systems Gemini"
334 select CPU_FA526
Russell King788c9702009-04-26 14:21:59 +0100335 select ARCH_REQUIRE_GPIOLIB
John Stultz5cfc8ee2010-03-24 00:22:36 +0000336 select ARCH_USES_GETTIMEOFFSET
Russell King788c9702009-04-26 14:21:59 +0100337 help
338 Support for the Cortina Systems Gemini family SoCs
339
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340config ARCH_EBSA110
341 bool "EBSA-110"
Russell Kingc7508152008-10-26 10:55:14 +0000342 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100343 select ISA
Russell Kingc5eb2a22007-03-03 11:54:19 +0000344 select NO_IOPORT
John Stultz5cfc8ee2010-03-24 00:22:36 +0000345 select ARCH_USES_GETTIMEOFFSET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346 help
347 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000348 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349 Ethernet interface, two PCMCIA sockets, two serial ports and a
350 parallel port.
351
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000352config ARCH_EP93XX
353 bool "EP93xx-based"
Russell Kingc7508152008-10-26 10:55:14 +0000354 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000355 select ARM_AMBA
356 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100357 select CLKDEV_LOOKUP
Michael Buesch7444a722008-07-25 01:46:11 -0700358 select ARCH_REQUIRE_GPIOLIB
Mel Gormaneb335752009-05-13 17:34:48 +0100359 select ARCH_HAS_HOLES_MEMORYMODEL
John Stultz5cfc8ee2010-03-24 00:22:36 +0000360 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000361 help
362 This enables support for the Cirrus EP93xx series of CPUs.
363
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364config ARCH_FOOTBRIDGE
365 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000366 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000368 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000369 help
370 Support for systems based on the DC21285 companion chip
371 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372
Russell King788c9702009-04-26 14:21:59 +0100373config ARCH_MXC
374 bool "Freescale MXC/iMX-based"
Russell King788c9702009-04-26 14:21:59 +0100375 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100376 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100377 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100378 select CLKSRC_MMIO
Jan Weitzelc124bef2011-03-17 13:44:30 +0100379 select HAVE_SCHED_CLOCK
Russell King788c9702009-04-26 14:21:59 +0100380 help
381 Support for Freescale MXC/iMX-based family of processors
382
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800383config ARCH_MXS
384 bool "Freescale MXS-based"
385 select GENERIC_CLOCKEVENTS
386 select ARCH_REQUIRE_GPIOLIB
Sascha Hauerb9214b92011-01-13 16:59:25 +0100387 select CLKDEV_LOOKUP
Russell King5c61ddc2011-05-08 17:21:49 +0100388 select CLKSRC_MMIO
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800389 help
390 Support for Freescale MXS-based family of processors
391
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100392config ARCH_NETX
393 bool "Hilscher NetX based"
Russell King234b6ced2011-05-08 14:09:47 +0100394 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000395 select CPU_ARM926T
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100396 select ARM_VIC
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100397 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000398 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100399 This enables support for systems based on the Hilscher NetX Soc
400
401config ARCH_H720X
402 bool "Hynix HMS720x-based"
Russell Kingc7508152008-10-26 10:55:14 +0000403 select CPU_ARM720T
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100404 select ISA_DMA_API
John Stultz5cfc8ee2010-03-24 00:22:36 +0000405 select ARCH_USES_GETTIMEOFFSET
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100406 help
407 This enables support for systems based on the Hynix HMS720x
408
Russell King3b938be2007-05-12 11:25:44 +0100409config ARCH_IOP13XX
410 bool "IOP13xx-based"
411 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000412 select CPU_XSC3
Russell King3b938be2007-05-12 11:25:44 +0100413 select PLAT_IOP
414 select PCI
415 select ARCH_SUPPORTS_MSI
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +0100416 select VMSPLIT_1G
Russell King3b938be2007-05-12 11:25:44 +0100417 help
418 Support for Intel's IOP13XX (XScale) family of processors.
419
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100420config ARCH_IOP32X
421 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100422 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000423 select CPU_XSCALE
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100424 select PLAT_IOP
Russell Kingf7e68bb2005-05-05 14:49:01 +0100425 select PCI
Russell Kingbb2b1802008-07-26 15:36:03 +0100426 select ARCH_REQUIRE_GPIOLIB
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000427 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100428 Support for Intel's 80219 and IOP32X (XScale) family of
429 processors.
430
431config ARCH_IOP33X
432 bool "IOP33x-based"
433 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000434 select CPU_XSCALE
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100435 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100436 select PCI
Russell Kingbb2b1802008-07-26 15:36:03 +0100437 select ARCH_REQUIRE_GPIOLIB
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100438 help
439 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440
Russell King3b938be2007-05-12 11:25:44 +0100441config ARCH_IXP23XX
442 bool "IXP23XX-based"
Dan Williams588ef762007-02-13 17:12:04 +0100443 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000444 select CPU_XSC3
Russell King3b938be2007-05-12 11:25:44 +0100445 select PCI
John Stultz5cfc8ee2010-03-24 00:22:36 +0000446 select ARCH_USES_GETTIMEOFFSET
Dan Williams285f5fa2006-12-07 02:59:39 +0100447 help
Russell King3b938be2007-05-12 11:25:44 +0100448 Support for Intel's IXP23xx (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449
450config ARCH_IXP2000
451 bool "IXP2400/2800-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100452 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000453 select CPU_XSCALE
Russell Kingf7e68bb2005-05-05 14:49:01 +0100454 select PCI
John Stultz5cfc8ee2010-03-24 00:22:36 +0000455 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000456 help
457 Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458
Russell King3b938be2007-05-12 11:25:44 +0100459config ARCH_IXP4XX
460 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100461 depends on MMU
Russell King234b6ced2011-05-08 14:09:47 +0100462 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000463 select CPU_XSCALE
Milan Svoboda8858e9a2007-05-14 07:50:42 +0100464 select GENERIC_GPIO
Russell King3b938be2007-05-12 11:25:44 +0100465 select GENERIC_CLOCKEVENTS
Russell King5b0d4952010-12-15 21:23:13 +0000466 select HAVE_SCHED_CLOCK
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100467 select MIGHT_HAVE_PCI
Russell King485bdde2008-10-17 14:00:43 +0100468 select DMABOUNCE if PCI
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100469 help
Russell King3b938be2007-05-12 11:25:44 +0100470 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100471
Saeed Bisharaedabd382009-08-06 15:12:43 +0300472config ARCH_DOVE
473 bool "Marvell Dove"
Konstantin Porotchkin7b769bb2011-04-07 13:49:41 +0300474 select CPU_V7
Saeed Bisharaedabd382009-08-06 15:12:43 +0300475 select PCI
Saeed Bisharaedabd382009-08-06 15:12:43 +0300476 select ARCH_REQUIRE_GPIOLIB
Saeed Bisharaedabd382009-08-06 15:12:43 +0300477 select GENERIC_CLOCKEVENTS
478 select PLAT_ORION
479 help
480 Support for the Marvell Dove SoC 88AP510
481
Saeed Bishara651c74c2008-06-22 22:45:06 +0200482config ARCH_KIRKWOOD
483 bool "Marvell Kirkwood"
Russell Kingc7508152008-10-26 10:55:14 +0000484 select CPU_FEROCEON
Saeed Bishara651c74c2008-06-22 22:45:06 +0200485 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700486 select ARCH_REQUIRE_GPIOLIB
Saeed Bishara651c74c2008-06-22 22:45:06 +0200487 select GENERIC_CLOCKEVENTS
488 select PLAT_ORION
489 help
490 Support for the following Marvell Kirkwood series SoCs:
491 88F6180, 88F6192 and 88F6281.
492
Russell King788c9702009-04-26 14:21:59 +0100493config ARCH_LOKI
494 bool "Marvell Loki (88RC8480)"
495 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100496 select GENERIC_CLOCKEVENTS
497 select PLAT_ORION
498 help
499 Support for the Marvell Loki (88RC8480) SoC.
500
Kevin Wells40805942010-07-27 08:49:04 -0700501config ARCH_LPC32XX
502 bool "NXP LPC32XX"
Russell King234b6ced2011-05-08 14:09:47 +0100503 select CLKSRC_MMIO
Kevin Wells40805942010-07-27 08:49:04 -0700504 select CPU_ARM926T
505 select ARCH_REQUIRE_GPIOLIB
506 select HAVE_IDE
507 select ARM_AMBA
508 select USB_ARCH_HAS_OHCI
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100509 select CLKDEV_LOOKUP
Kevin Wells40805942010-07-27 08:49:04 -0700510 select GENERIC_TIME
511 select GENERIC_CLOCKEVENTS
512 help
513 Support for the NXP LPC32XX family of processors
514
Russell King788c9702009-04-26 14:21:59 +0100515config ARCH_MV78XX0
516 bool "Marvell MV78xx0"
517 select CPU_FEROCEON
518 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700519 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100520 select GENERIC_CLOCKEVENTS
521 select PLAT_ORION
522 help
523 Support for the following Marvell MV78xx0 series SoCs:
524 MV781x0, MV782x0.
525
526config ARCH_ORION5X
527 bool "Marvell Orion"
528 depends on MMU
529 select CPU_FEROCEON
530 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700531 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100532 select GENERIC_CLOCKEVENTS
533 select PLAT_ORION
534 help
535 Support for the following Marvell Orion 5x series SoCs:
536 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
537 Orion-2 (5281), Orion-1-90 (6183).
538
539config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500540 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100541 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100542 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100543 select CLKDEV_LOOKUP
Russell King788c9702009-04-26 14:21:59 +0100544 select GENERIC_CLOCKEVENTS
Russell King28bb7bc2010-12-15 21:46:48 +0000545 select HAVE_SCHED_CLOCK
Russell King788c9702009-04-26 14:21:59 +0100546 select TICK_ONESHOT
547 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400548 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100549 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500550 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100551
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100552config ARCH_KS8695
553 bool "Micrel/Kendin KS8695"
Russell Kingc7508152008-10-26 10:55:14 +0000554 select CPU_ARM922T
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100555 select ARCH_REQUIRE_GPIOLIB
John Stultz5cfc8ee2010-03-24 00:22:36 +0000556 select ARCH_USES_GETTIMEOFFSET
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100557 help
558 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
559 System-on-Chip devices.
560
Russell King788c9702009-04-26 14:21:59 +0100561config ARCH_W90X900
562 bool "Nuvoton W90X900 CPU"
563 select CPU_ARM926T
wanzongshunc52d3d62009-06-10 15:49:32 +0100564 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100565 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100566 select CLKSRC_MMIO
wanzongshun58b53692009-08-14 15:36:44 +0100567 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200568 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100569 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
570 At present, the w90x900 has been renamed nuc900, regarding
571 the ARM series product line, you can login the following
572 link address to know more.
573
574 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
575 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400576
wanzongshuna62e9032009-12-31 15:06:05 +0100577config ARCH_NUC93X
578 bool "Nuvoton NUC93X CPU"
579 select CPU_ARM926T
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100580 select CLKDEV_LOOKUP
wanzongshuna62e9032009-12-31 15:06:05 +0100581 help
582 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
583 low-power and high performance MPEG-4/JPEG multimedia controller chip.
584
Erik Gillingc5f80062010-01-21 16:53:02 -0800585config ARCH_TEGRA
586 bool "NVIDIA Tegra"
Russell King40737232011-01-06 22:32:52 +0000587 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100588 select CLKSRC_MMIO
Erik Gillingc5f80062010-01-21 16:53:02 -0800589 select GENERIC_TIME
590 select GENERIC_CLOCKEVENTS
591 select GENERIC_GPIO
592 select HAVE_CLK
Russell Kinge3f4c0a2010-12-15 21:49:42 +0000593 select HAVE_SCHED_CLOCK
Erik Gillingc5f80062010-01-21 16:53:02 -0800594 select ARCH_HAS_BARRIERS if CACHE_L2X0
Colin Cross7056d422010-04-22 20:30:13 -0700595 select ARCH_HAS_CPUFREQ
Erik Gillingc5f80062010-01-21 16:53:02 -0800596 help
597 This enables support for NVIDIA Tegra based systems (Tegra APX,
598 Tegra 6xx and Tegra 2 series).
599
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100600config ARCH_PNX4008
601 bool "Philips Nexperia PNX4008 Mobile"
Russell Kingc7508152008-10-26 10:55:14 +0000602 select CPU_ARM926T
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100603 select CLKDEV_LOOKUP
John Stultz5cfc8ee2010-03-24 00:22:36 +0000604 select ARCH_USES_GETTIMEOFFSET
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100605 help
606 This enables support for Philips PNX4008 mobile platform.
607
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700609 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100610 depends on MMU
Al Viro034d2f52005-12-19 16:27:59 -0500611 select ARCH_MTD_XIP
Ben Dooks89c52ed2009-07-30 23:23:24 +0100612 select ARCH_HAS_CPUFREQ
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100613 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100614 select CLKSRC_MMIO
Michael Buesch7444a722008-07-25 01:46:11 -0700615 select ARCH_REQUIRE_GPIOLIB
Eric Miao981d0f32007-07-24 01:22:43 +0100616 select GENERIC_CLOCKEVENTS
Russell King7ce83012010-12-15 21:48:15 +0000617 select HAVE_SCHED_CLOCK
Russell Kinga88264c2007-11-12 22:45:16 +0000618 select TICK_ONESHOT
Eric Miaobd5ce432009-01-20 12:06:01 +0800619 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800620 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000621 help
eric miao2c8086a2007-09-11 19:13:17 -0700622 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623
Russell King788c9702009-04-26 14:21:59 +0100624config ARCH_MSM
625 bool "Qualcomm MSM"
Steve Muckle4b536b82008-12-29 16:17:22 -0500626 select HAVE_CLK
Eric Miao49cbe782009-01-20 14:15:18 +0800627 select GENERIC_CLOCKEVENTS
Pavel Machek923a0812010-06-02 11:11:12 -0700628 select ARCH_REQUIRE_GPIOLIB
Stephen Boydbd323442011-02-23 09:37:42 -0800629 select CLKDEV_LOOKUP
Eric Miao49cbe782009-01-20 14:15:18 +0800630 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800631 Support for Qualcomm MSM/QSD based systems. This runs on the
632 apps processor of the MSM/QSD and depends on a shared memory
633 interface to the modem processor which runs the baseband
634 stack and controls some vital subsystems
635 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800636
Magnus Dammc793c1b2010-02-05 11:14:49 +0000637config ARCH_SHMOBILE
Paul Mundt6d72ad32010-11-16 16:10:20 +0900638 bool "Renesas SH-Mobile / R-Mobile"
639 select HAVE_CLK
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900640 select CLKDEV_LOOKUP
Paul Mundt6d72ad32010-11-16 16:10:20 +0900641 select GENERIC_CLOCKEVENTS
642 select NO_IOPORT
643 select SPARSE_IRQ
Magnus Damm60f14352010-12-28 08:26:52 +0000644 select MULTI_IRQ_HANDLER
Magnus Dammc793c1b2010-02-05 11:14:49 +0000645 help
Paul Mundt6d72ad32010-11-16 16:10:20 +0900646 Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000647
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648config ARCH_RPC
649 bool "RiscPC"
650 select ARCH_ACORN
651 select FIQ
652 select TIMER_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100653 select ARCH_MAY_HAVE_PC_FDC
Ben Dooks341eb782008-07-01 14:16:49 +0100654 select HAVE_PATA_PLATFORM
Russell King065909b2006-01-04 15:44:16 +0000655 select ISA_DMA_API
Al Viro5ea81762007-02-11 15:41:31 +0000656 select NO_IOPORT
Russell King07f841b2008-10-01 17:11:06 +0100657 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000658 select ARCH_USES_GETTIMEOFFSET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659 help
660 On the Acorn Risc-PC, Linux can support the internal IDE disk and
661 CD-ROM interface, serial and parallel port, and the floppy drive.
662
663config ARCH_SA1100
664 bool "SA1100-based"
Russell King234b6ced2011-05-08 14:09:47 +0100665 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000666 select CPU_SA1100
Russell Kingf7e68bb2005-05-05 14:49:01 +0100667 select ISA
Russell King05944d72006-11-30 20:43:51 +0000668 select ARCH_SPARSEMEM_ENABLE
Al Viro034d2f52005-12-19 16:27:59 -0500669 select ARCH_MTD_XIP
Ben Dooks89c52ed2009-07-30 23:23:24 +0100670 select ARCH_HAS_CPUFREQ
Russell King1937f5b2009-12-12 16:20:57 +0000671 select CPU_FREQ
Russell King3e238be2008-04-14 23:03:10 +0100672 select GENERIC_CLOCKEVENTS
David Brownell9483a572008-07-23 21:26:48 -0700673 select HAVE_CLK
Russell King5094b922010-12-15 21:49:06 +0000674 select HAVE_SCHED_CLOCK
Russell King3e238be2008-04-14 23:03:10 +0100675 select TICK_ONESHOT
Michael Buesch7444a722008-07-25 01:46:11 -0700676 select ARCH_REQUIRE_GPIOLIB
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000677 help
678 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700679
680config ARCH_S3C2410
Ben Dooks63b1f512010-04-30 16:32:26 +0900681 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
David Brownell0a938b92007-03-05 00:30:18 -0800682 select GENERIC_GPIO
Ben Dooks9d56c022009-07-30 23:23:25 +0100683 select ARCH_HAS_CPUFREQ
David Brownell9483a572008-07-23 21:26:48 -0700684 select HAVE_CLK
John Stultz5cfc8ee2010-03-24 00:22:36 +0000685 select ARCH_USES_GETTIMEOFFSET
Kukjin Kim20676c12010-11-13 16:08:32 +0900686 select HAVE_S3C2410_I2C if I2C
Linus Torvalds1da177e2005-04-16 15:20:36 -0700687 help
688 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
689 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000690 the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691
Ben Dooks63b1f512010-04-30 16:32:26 +0900692 Note, the S3C2416 and the S3C2450 are so close that they even share
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300693 the same SoC ID code. This means that there is no separate machine
Ben Dooks63b1f512010-04-30 16:32:26 +0900694 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
695
Ben Dooksa08ab632008-10-21 14:06:39 +0100696config ARCH_S3C64XX
697 bool "Samsung S3C64XX"
Ben Dooks89f1fa02010-01-29 09:02:17 +0000698 select PLAT_SAMSUNG
Ben Dooks89f0ce72010-01-26 15:49:15 +0900699 select CPU_V6
Ben Dooks89f0ce72010-01-26 15:49:15 +0900700 select ARM_VIC
Ben Dooksa08ab632008-10-21 14:06:39 +0100701 select HAVE_CLK
Ben Dooks89f0ce72010-01-26 15:49:15 +0900702 select NO_IOPORT
John Stultz5cfc8ee2010-03-24 00:22:36 +0000703 select ARCH_USES_GETTIMEOFFSET
Ben Dooks89c52ed2009-07-30 23:23:24 +0100704 select ARCH_HAS_CPUFREQ
Ben Dooks89f0ce72010-01-26 15:49:15 +0900705 select ARCH_REQUIRE_GPIOLIB
706 select SAMSUNG_CLKSRC
707 select SAMSUNG_IRQ_VIC_TIMER
708 select SAMSUNG_IRQ_UART
709 select S3C_GPIO_TRACK
710 select S3C_GPIO_PULL_UPDOWN
711 select S3C_GPIO_CFG_S3C24XX
712 select S3C_GPIO_CFG_S3C64XX
713 select S3C_DEV_NAND
714 select USB_ARCH_HAS_OHCI
715 select SAMSUNG_GPIOLIB_4BIT
Kukjin Kim20676c12010-11-13 16:08:32 +0900716 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900717 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Ben Dooksa08ab632008-10-21 14:06:39 +0100718 help
719 Samsung S3C64XX series based systems
720
Kukjin Kim49b7a492010-09-07 15:47:18 +0900721config ARCH_S5P64X0
722 bool "Samsung S5P6440 S5P6450"
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900723 select CPU_V6
724 select GENERIC_GPIO
725 select HAVE_CLK
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900726 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Sangbeom Kim9e65bbf2011-03-12 08:05:19 +0900727 select GENERIC_CLOCKEVENTS
728 select HAVE_SCHED_CLOCK
Kukjin Kim20676c12010-11-13 16:08:32 +0900729 select HAVE_S3C2410_I2C if I2C
Kukjin Kim754961a2010-11-13 16:11:46 +0900730 select HAVE_S3C_RTC if RTC_CLASS
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900731 help
Kukjin Kim49b7a492010-09-07 15:47:18 +0900732 Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
733 SMDK6450.
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900734
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200735config ARCH_S5PC100
736 bool "Samsung S5PC100"
Byungho Min5a7652f2009-06-23 21:39:42 +0900737 select GENERIC_GPIO
738 select HAVE_CLK
739 select CPU_V7
Kukjin Kimd6d502f2010-02-22 00:02:59 +0100740 select ARM_L1_CACHE_SHIFT_6
Ben Dooks925c68c2010-05-20 20:48:28 +0900741 select ARCH_USES_GETTIMEOFFSET
Kukjin Kim20676c12010-11-13 16:08:32 +0900742 select HAVE_S3C2410_I2C if I2C
Kukjin Kim754961a2010-11-13 16:11:46 +0900743 select HAVE_S3C_RTC if RTC_CLASS
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900744 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Byungho Min5a7652f2009-06-23 21:39:42 +0900745 help
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200746 Samsung S5PC100 series based systems
Byungho Min5a7652f2009-06-23 21:39:42 +0900747
Kukjin Kim170f4e42010-02-24 16:40:44 +0900748config ARCH_S5PV210
749 bool "Samsung S5PV210/S5PC110"
750 select CPU_V7
Kyungmin Parkeecb6a82010-09-29 21:29:27 +0900751 select ARCH_SPARSEMEM_ENABLE
Kukjin Kim170f4e42010-02-24 16:40:44 +0900752 select GENERIC_GPIO
753 select HAVE_CLK
754 select ARM_L1_CACHE_SHIFT_6
Jaecheol Leed8144ae2010-10-12 09:23:19 +0900755 select ARCH_HAS_CPUFREQ
Sangbeom Kim9e65bbf2011-03-12 08:05:19 +0900756 select GENERIC_CLOCKEVENTS
757 select HAVE_SCHED_CLOCK
Kukjin Kim20676c12010-11-13 16:08:32 +0900758 select HAVE_S3C2410_I2C if I2C
Kukjin Kim754961a2010-11-13 16:11:46 +0900759 select HAVE_S3C_RTC if RTC_CLASS
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900760 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Kukjin Kim170f4e42010-02-24 16:40:44 +0900761 help
762 Samsung S5PV210/S5PC110 series based systems
763
Kukjin Kim10606aa2011-02-14 15:05:27 +0900764config ARCH_EXYNOS4
765 bool "Samsung EXYNOS4"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900766 select CPU_V7
Kyungmin Parkf567fa62010-09-29 21:33:29 +0900767 select ARCH_SPARSEMEM_ENABLE
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900768 select GENERIC_GPIO
769 select HAVE_CLK
Sunyoung Kangb333fb12010-09-16 11:11:45 +0900770 select ARCH_HAS_CPUFREQ
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900771 select GENERIC_CLOCKEVENTS
Kukjin Kim754961a2010-11-13 16:11:46 +0900772 select HAVE_S3C_RTC if RTC_CLASS
Kukjin Kim20676c12010-11-13 16:08:32 +0900773 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900774 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900775 help
Kukjin Kim10606aa2011-02-14 15:05:27 +0900776 Samsung EXYNOS4 series based systems
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900777
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778config ARCH_SHARK
779 bool "Shark"
Russell Kingc7508152008-10-26 10:55:14 +0000780 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100781 select ISA
782 select ISA_DMA
Nicolas Pitre3bca1032008-10-07 20:14:55 +0100783 select ZONE_DMA
Russell Kingf7e68bb2005-05-05 14:49:01 +0100784 select PCI
John Stultz5cfc8ee2010-03-24 00:22:36 +0000785 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000786 help
787 Support for the StrongARM based Digital DNARD machine, also known
788 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789
Hans J. Koch83ef3332010-09-17 18:13:56 +0200790config ARCH_TCC_926
791 bool "Telechips TCC ARM926-based systems"
Russell King234b6ced2011-05-08 14:09:47 +0100792 select CLKSRC_MMIO
Hans J. Koch83ef3332010-09-17 18:13:56 +0200793 select CPU_ARM926T
794 select HAVE_CLK
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100795 select CLKDEV_LOOKUP
Hans J. Koch83ef3332010-09-17 18:13:56 +0200796 select GENERIC_CLOCKEVENTS
797 help
798 Support for Telechips TCC ARM926-based systems.
799
Linus Walleijd98aac72009-04-27 10:21:46 +0100800config ARCH_U300
801 bool "ST-Ericsson U300 Series"
802 depends on MMU
Russell King234b6ced2011-05-08 14:09:47 +0100803 select CLKSRC_MMIO
Linus Walleijd98aac72009-04-27 10:21:46 +0100804 select CPU_ARM926T
Russell King5c21b7c2010-12-15 21:50:14 +0000805 select HAVE_SCHED_CLOCK
Linus Walleijbc581772009-09-15 17:30:37 +0100806 select HAVE_TCM
Linus Walleijd98aac72009-04-27 10:21:46 +0100807 select ARM_AMBA
808 select ARM_VIC
Linus Walleijd98aac72009-04-27 10:21:46 +0100809 select GENERIC_CLOCKEVENTS
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100810 select CLKDEV_LOOKUP
Linus Walleijd98aac72009-04-27 10:21:46 +0100811 select GENERIC_GPIO
812 help
813 Support for ST-Ericsson U300 series mobile platforms.
814
Russell Kingccf50e22010-03-15 19:03:06 +0000815config ARCH_U8500
816 bool "ST-Ericsson U8500 Series"
817 select CPU_V7
818 select ARM_AMBA
Russell Kingccf50e22010-03-15 19:03:06 +0000819 select GENERIC_CLOCKEVENTS
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100820 select CLKDEV_LOOKUP
Rabin Vincent94bdc0e2010-03-03 04:54:37 +0100821 select ARCH_REQUIRE_GPIOLIB
Martin Persson7c1a70e2010-12-08 15:13:42 +0100822 select ARCH_HAS_CPUFREQ
Russell Kingccf50e22010-03-15 19:03:06 +0000823 help
824 Support for ST-Ericsson's Ux500 architecture
825
826config ARCH_NOMADIK
827 bool "STMicroelectronics Nomadik"
828 select ARM_AMBA
829 select ARM_VIC
830 select CPU_ARM926T
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100831 select CLKDEV_LOOKUP
Russell Kingccf50e22010-03-15 19:03:06 +0000832 select GENERIC_CLOCKEVENTS
Russell Kingccf50e22010-03-15 19:03:06 +0000833 select ARCH_REQUIRE_GPIOLIB
834 help
835 Support for the Nomadik platform by ST-Ericsson
836
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100837config ARCH_DAVINCI
838 bool "TI DaVinci"
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100839 select GENERIC_CLOCKEVENTS
David Brownelldce11152008-09-07 23:41:04 -0700840 select ARCH_REQUIRE_GPIOLIB
Nicolas Pitre3bca1032008-10-07 20:14:55 +0100841 select ZONE_DMA
Kevin Hilman9232fcc2009-04-08 14:49:38 -0700842 select HAVE_IDE
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100843 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700844 select GENERIC_ALLOCATOR
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100845 select GENERIC_IRQ_CHIP
Sekhar Noriae88e052009-11-19 15:34:01 +0530846 select ARCH_HAS_HOLES_MEMORYMODEL
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100847 help
848 Support for TI's DaVinci platform.
849
Russell King3b938be2007-05-12 11:25:44 +0100850config ARCH_OMAP
851 bool "TI OMAP"
David Brownell9483a572008-07-23 21:26:48 -0700852 select HAVE_CLK
Michael Buesch7444a722008-07-25 01:46:11 -0700853 select ARCH_REQUIRE_GPIOLIB
Ben Dooks89c52ed2009-07-30 23:23:24 +0100854 select ARCH_HAS_CPUFREQ
Kevin Hilman06cad092007-10-18 23:04:43 -0700855 select GENERIC_CLOCKEVENTS
Russell Kingdc548fb2010-12-15 21:53:51 +0000856 select HAVE_SCHED_CLOCK
Sriram9af915d2010-01-29 14:20:05 -0800857 select ARCH_HAS_HOLES_MEMORYMODEL
Russell King3b938be2007-05-12 11:25:44 +0100858 help
Lennert Buytenhek6e457bb2010-09-22 20:40:57 +0200859 Support for TI's OMAP platform (OMAP1/2/3/4).
Russell King3b938be2007-05-12 11:25:44 +0100860
viresh kumarcee37e52010-04-01 12:31:05 +0100861config PLAT_SPEAR
862 bool "ST SPEAr"
863 select ARM_AMBA
864 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100865 select CLKDEV_LOOKUP
Russell Kingd6e15d72011-05-08 17:10:14 +0100866 select CLKSRC_MMIO
viresh kumarcee37e52010-04-01 12:31:05 +0100867 select GENERIC_CLOCKEVENTS
viresh kumarcee37e52010-04-01 12:31:05 +0100868 select HAVE_CLK
869 help
870 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
871
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100872config ARCH_VT8500
873 bool "VIA/WonderMedia 85xx"
874 select CPU_ARM926T
875 select GENERIC_GPIO
876 select ARCH_HAS_CPUFREQ
877 select GENERIC_CLOCKEVENTS
878 select ARCH_REQUIRE_GPIOLIB
879 select HAVE_PWM
880 help
881 Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882endchoice
883
Russell Kingccf50e22010-03-15 19:03:06 +0000884#
885# This is sorted alphabetically by mach-* pathname. However, plat-*
886# Kconfigs may be included either alphabetically (according to the
887# plat- suffix) or along side the corresponding mach-* source.
888#
Russell King95b8f202010-01-14 11:43:54 +0000889source "arch/arm/mach-at91/Kconfig"
890
891source "arch/arm/mach-bcmring/Kconfig"
892
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893source "arch/arm/mach-clps711x/Kconfig"
894
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300895source "arch/arm/mach-cns3xxx/Kconfig"
896
Russell King95b8f202010-01-14 11:43:54 +0000897source "arch/arm/mach-davinci/Kconfig"
898
899source "arch/arm/mach-dove/Kconfig"
900
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000901source "arch/arm/mach-ep93xx/Kconfig"
902
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903source "arch/arm/mach-footbridge/Kconfig"
904
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200905source "arch/arm/mach-gemini/Kconfig"
906
Russell King95b8f202010-01-14 11:43:54 +0000907source "arch/arm/mach-h720x/Kconfig"
908
Linus Torvalds1da177e2005-04-16 15:20:36 -0700909source "arch/arm/mach-integrator/Kconfig"
910
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100911source "arch/arm/mach-iop32x/Kconfig"
912
913source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914
Dan Williams285f5fa2006-12-07 02:59:39 +0100915source "arch/arm/mach-iop13xx/Kconfig"
916
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917source "arch/arm/mach-ixp4xx/Kconfig"
918
919source "arch/arm/mach-ixp2000/Kconfig"
920
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100921source "arch/arm/mach-ixp23xx/Kconfig"
922
Russell King95b8f202010-01-14 11:43:54 +0000923source "arch/arm/mach-kirkwood/Kconfig"
924
925source "arch/arm/mach-ks8695/Kconfig"
926
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200927source "arch/arm/mach-loki/Kconfig"
928
Kevin Wells40805942010-07-27 08:49:04 -0700929source "arch/arm/mach-lpc32xx/Kconfig"
930
Russell King95b8f202010-01-14 11:43:54 +0000931source "arch/arm/mach-msm/Kconfig"
932
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200933source "arch/arm/mach-mv78xx0/Kconfig"
934
Russell King95b8f202010-01-14 11:43:54 +0000935source "arch/arm/plat-mxc/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700936
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800937source "arch/arm/mach-mxs/Kconfig"
938
Russell King95b8f202010-01-14 11:43:54 +0000939source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800940
Russell King95b8f202010-01-14 11:43:54 +0000941source "arch/arm/mach-nomadik/Kconfig"
942source "arch/arm/plat-nomadik/Kconfig"
943
Russell Kingd91a89102010-02-04 18:13:17 +0000944source "arch/arm/mach-nuc93x/Kconfig"
945
Tony Lindgrend48af152005-07-10 19:58:17 +0100946source "arch/arm/plat-omap/Kconfig"
947
948source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700949
Tony Lindgren1dbae812005-11-10 14:26:51 +0000950source "arch/arm/mach-omap2/Kconfig"
951
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400952source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400953
Russell King95b8f202010-01-14 11:43:54 +0000954source "arch/arm/mach-pxa/Kconfig"
955source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956
Russell King95b8f202010-01-14 11:43:54 +0000957source "arch/arm/mach-mmp/Kconfig"
958
959source "arch/arm/mach-realview/Kconfig"
960
961source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300962
Ben Dookscf383672009-11-10 00:14:58 +0000963source "arch/arm/plat-samsung/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100964source "arch/arm/plat-s3c24xx/Kconfig"
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900965source "arch/arm/plat-s5p/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100966
viresh kumarcee37e52010-04-01 12:31:05 +0100967source "arch/arm/plat-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100968
Hans J. Koch83ef3332010-09-17 18:13:56 +0200969source "arch/arm/plat-tcc/Kconfig"
970
Ben Dooksa21765a2007-02-11 18:31:01 +0100971if ARCH_S3C2410
972source "arch/arm/mach-s3c2400/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700973source "arch/arm/mach-s3c2410/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100974source "arch/arm/mach-s3c2412/Kconfig"
Yauhen Kharuzhyf1290a42010-04-28 18:09:01 +0900975source "arch/arm/mach-s3c2416/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100976source "arch/arm/mach-s3c2440/Kconfig"
Ben Dookse4d06e32007-02-16 12:12:31 +0100977source "arch/arm/mach-s3c2443/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100978endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700979
Ben Dooksa08ab632008-10-21 14:06:39 +0100980if ARCH_S3C64XX
Ben Dooks431107e2010-01-26 10:11:04 +0900981source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100982endif
983
Kukjin Kim49b7a492010-09-07 15:47:18 +0900984source "arch/arm/mach-s5p64x0/Kconfig"
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900985
Byungho Min5a7652f2009-06-23 21:39:42 +0900986source "arch/arm/mach-s5pc100/Kconfig"
Byungho Min5a7652f2009-06-23 21:39:42 +0900987
Kukjin Kim170f4e42010-02-24 16:40:44 +0900988source "arch/arm/mach-s5pv210/Kconfig"
989
Kukjin Kim10606aa2011-02-14 15:05:27 +0900990source "arch/arm/mach-exynos4/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900991
Russell King882d01f2010-03-02 23:40:15 +0000992source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700993
Erik Gillingc5f80062010-01-21 16:53:02 -0800994source "arch/arm/mach-tegra/Kconfig"
995
Russell King95b8f202010-01-14 11:43:54 +0000996source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700997
Russell King95b8f202010-01-14 11:43:54 +0000998source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999
1000source "arch/arm/mach-versatile/Kconfig"
1001
Russell Kingceade892010-02-11 21:44:53 +00001002source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +00001003source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +00001004
Alexey Charkov21f47fb2010-12-23 13:11:21 +01001005source "arch/arm/mach-vt8500/Kconfig"
1006
wanzongshun7ec80dd2008-12-03 03:55:38 +01001007source "arch/arm/mach-w90x900/Kconfig"
1008
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009# Definitions to make life easier
1010config ARCH_ACORN
1011 bool
1012
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +01001013config PLAT_IOP
1014 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -07001015 select GENERIC_CLOCKEVENTS
Russell King08f26b12010-12-15 21:52:10 +00001016 select HAVE_SCHED_CLOCK
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +01001017
Lennert Buytenhek69b02f62008-03-27 14:51:39 -04001018config PLAT_ORION
1019 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001020 select CLKSRC_MMIO
Russell Kingdc7ad3b2011-05-22 10:01:21 +01001021 select GENERIC_IRQ_CHIP
Russell Kingf06a1622010-12-15 21:55:06 +00001022 select HAVE_SCHED_CLOCK
Lennert Buytenhek69b02f62008-03-27 14:51:39 -04001023
Eric Miaobd5ce432009-01-20 12:06:01 +08001024config PLAT_PXA
1025 bool
1026
Russell Kingf4b8b312010-01-14 12:48:06 +00001027config PLAT_VERSATILE
1028 bool
1029
Russell Kinge3887712010-01-14 13:30:16 +00001030config ARM_TIMER_SP804
1031 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001032 select CLKSRC_MMIO
Russell Kinge3887712010-01-14 13:30:16 +00001033
Linus Torvalds1da177e2005-04-16 15:20:36 -07001034source arch/arm/mm/Kconfig
1035
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001036config IWMMXT
1037 bool "Enable iWMMXt support"
Haojian Zhuangef6c8442010-11-24 11:54:25 +08001038 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
1039 default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001040 help
1041 Enable support for iWMMXt context switching at run time if
1042 running on a CPU that supports it.
1043
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
1045config XSCALE_PMU
1046 bool
1047 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
1048 default y
1049
Jamie Iles0f4f0672010-02-02 20:23:15 +01001050config CPU_HAS_PMU
Russell Kinge399b1a2011-01-17 15:08:32 +00001051 depends on (CPU_V6 || CPU_V6K || CPU_V7 || XSCALE_PMU) && \
Will Deacon8954bb02010-06-21 15:32:54 +01001052 (!ARCH_OMAP3 || OMAP3_EMU)
Jamie Iles0f4f0672010-02-02 20:23:15 +01001053 default y
1054 bool
1055
eric miao52108642010-12-13 09:42:34 +01001056config MULTI_IRQ_HANDLER
1057 bool
1058 help
1059 Allow each machine to specify it's own IRQ handler at run time.
1060
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001061if !MMU
1062source "arch/arm/Kconfig-nommu"
1063endif
1064
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001065config ARM_ERRATA_411920
1066 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001067 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001068 help
1069 Invalidation of the Instruction Cache operation can
1070 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1071 It does not affect the MPCore. This option enables the ARM Ltd.
1072 recommended workaround.
1073
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001074config ARM_ERRATA_430973
1075 bool "ARM errata: Stale prediction on replaced interworking branch"
1076 depends on CPU_V7
1077 help
1078 This option enables the workaround for the 430973 Cortex-A8
1079 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1080 interworking branch is replaced with another code sequence at the
1081 same virtual address, whether due to self-modifying code or virtual
1082 to physical address re-mapping, Cortex-A8 does not recover from the
1083 stale interworking branch prediction. This results in Cortex-A8
1084 executing the new code sequence in the incorrect ARM or Thumb state.
1085 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1086 and also flushes the branch target cache at every context switch.
1087 Note that setting specific bits in the ACTLR register may not be
1088 available in non-secure mode.
1089
Catalin Marinas855c5512009-04-30 17:06:15 +01001090config ARM_ERRATA_458693
1091 bool "ARM errata: Processor deadlock when a false hazard is created"
1092 depends on CPU_V7
1093 help
1094 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1095 erratum. For very specific sequences of memory operations, it is
1096 possible for a hazard condition intended for a cache line to instead
1097 be incorrectly associated with a different cache line. This false
1098 hazard might then cause a processor deadlock. The workaround enables
1099 the L1 caching of the NEON accesses and disables the PLD instruction
1100 in the ACTLR register. Note that setting specific bits in the ACTLR
1101 register may not be available in non-secure mode.
1102
Catalin Marinas0516e462009-04-30 17:06:20 +01001103config ARM_ERRATA_460075
1104 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1105 depends on CPU_V7
1106 help
1107 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1108 erratum. Any asynchronous access to the L2 cache may encounter a
1109 situation in which recent store transactions to the L2 cache are lost
1110 and overwritten with stale memory contents from external memory. The
1111 workaround disables the write-allocate mode for the L2 cache via the
1112 ACTLR register. Note that setting specific bits in the ACTLR register
1113 may not be available in non-secure mode.
1114
Will Deacon9f050272010-09-14 09:51:43 +01001115config ARM_ERRATA_742230
1116 bool "ARM errata: DMB operation may be faulty"
1117 depends on CPU_V7 && SMP
1118 help
1119 This option enables the workaround for the 742230 Cortex-A9
1120 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1121 between two write operations may not ensure the correct visibility
1122 ordering of the two writes. This workaround sets a specific bit in
1123 the diagnostic register of the Cortex-A9 which causes the DMB
1124 instruction to behave as a DSB, ensuring the correct behaviour of
1125 the two writes.
1126
Will Deacona672e992010-09-14 09:53:02 +01001127config ARM_ERRATA_742231
1128 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1129 depends on CPU_V7 && SMP
1130 help
1131 This option enables the workaround for the 742231 Cortex-A9
1132 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1133 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1134 accessing some data located in the same cache line, may get corrupted
1135 data due to bad handling of the address hazard when the line gets
1136 replaced from one of the CPUs at the same time as another CPU is
1137 accessing it. This workaround sets specific bits in the diagnostic
1138 register of the Cortex-A9 which reduces the linefill issuing
1139 capabilities of the processor.
1140
Santosh Shilimkar9e655822010-02-04 19:42:42 +01001141config PL310_ERRATA_588369
1142 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
Santosh Shilimkar2839e062011-03-08 06:59:54 +01001143 depends on CACHE_L2X0
Santosh Shilimkar9e655822010-02-04 19:42:42 +01001144 help
1145 The PL310 L2 cache controller implements three types of Clean &
1146 Invalidate maintenance operations: by Physical Address
1147 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1148 They are architecturally defined to behave as the execution of a
1149 clean operation followed immediately by an invalidate operation,
1150 both performing to the same memory location. This functionality
1151 is not correctly implemented in PL310 as clean lines are not
Santosh Shilimkar2839e062011-03-08 06:59:54 +01001152 invalidated as a result of these operations.
Will Deaconcdf357f2010-08-05 11:20:51 +01001153
1154config ARM_ERRATA_720789
1155 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1156 depends on CPU_V7 && SMP
1157 help
1158 This option enables the workaround for the 720789 Cortex-A9 (prior to
1159 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1160 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1161 As a consequence of this erratum, some TLB entries which should be
1162 invalidated are not, resulting in an incoherency in the system page
1163 tables. The workaround changes the TLB flushing routines to invalidate
1164 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001165
Russell King1f0090a2011-03-16 23:35:25 +00001166config PL310_ERRATA_727915
1167 bool "Background Clean & Invalidate by Way operation can cause data corruption"
1168 depends on CACHE_L2X0
1169 help
1170 PL310 implements the Clean & Invalidate by Way L2 cache maintenance
1171 operation (offset 0x7FC). This operation runs in background so that
1172 PL310 can handle normal accesses while it is in progress. Under very
1173 rare circumstances, due to this erratum, write data can be lost when
1174 PL310 treats a cacheable write transaction during a Clean &
1175 Invalidate by Way operation.
1176
Will Deacon475d92f2010-09-28 14:02:02 +01001177config ARM_ERRATA_743622
1178 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1179 depends on CPU_V7
1180 help
1181 This option enables the workaround for the 743622 Cortex-A9
1182 (r2p0..r2p2) erratum. Under very rare conditions, a faulty
1183 optimisation in the Cortex-A9 Store Buffer may lead to data
1184 corruption. This workaround sets a specific bit in the diagnostic
1185 register of the Cortex-A9 which disables the Store Buffer
1186 optimisation, preventing the defect from occurring. This has no
1187 visible impact on the overall performance or power consumption of the
1188 processor.
1189
Will Deacon9a27c272011-02-18 16:36:35 +01001190config ARM_ERRATA_751472
1191 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
1192 depends on CPU_V7 && SMP
1193 help
1194 This option enables the workaround for the 751472 Cortex-A9 (prior
1195 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1196 completion of a following broadcasted operation if the second
1197 operation is received by a CPU before the ICIALLUIS has completed,
1198 potentially leading to corrupted entries in the cache or TLB.
1199
Srinidhi Kasagar885028e2011-02-17 07:03:51 +01001200config ARM_ERRATA_753970
1201 bool "ARM errata: cache sync operation may be faulty"
1202 depends on CACHE_PL310
1203 help
1204 This option enables the workaround for the 753970 PL310 (r3p0) erratum.
1205
1206 Under some condition the effect of cache sync operation on
1207 the store buffer still remains when the operation completes.
1208 This means that the store buffer is always asked to drain and
1209 this prevents it from merging any further writes. The workaround
1210 is to replace the normal offset of cache sync operation (0x730)
1211 by another offset targeting an unmapped PL310 register 0x740.
1212 This has the same effect as the cache sync operation: store buffer
1213 drain and waiting for all buffers empty.
1214
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001215config ARM_ERRATA_754322
1216 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1217 depends on CPU_V7
1218 help
1219 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1220 r3p*) erratum. A speculative memory access may cause a page table walk
1221 which starts prior to an ASID switch but completes afterwards. This
1222 can populate the micro-TLB with a stale entry which may be hit with
1223 the new ASID. This workaround places two dsb instructions in the mm
1224 switching code so that no page table walks can cross the ASID switch.
1225
Will Deacon5dab26af2011-03-04 12:38:54 +01001226config ARM_ERRATA_754327
1227 bool "ARM errata: no automatic Store Buffer drain"
1228 depends on CPU_V7 && SMP
1229 help
1230 This option enables the workaround for the 754327 Cortex-A9 (prior to
1231 r2p0) erratum. The Store Buffer does not have any automatic draining
1232 mechanism and therefore a livelock may occur if an external agent
1233 continuously polls a memory location waiting to observe an update.
1234 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1235 written polling loops from denying visibility of updates to memory.
1236
Linus Torvalds1da177e2005-04-16 15:20:36 -07001237endmenu
1238
1239source "arch/arm/common/Kconfig"
1240
Linus Torvalds1da177e2005-04-16 15:20:36 -07001241menu "Bus support"
1242
1243config ARM_AMBA
1244 bool
1245
1246config ISA
1247 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001248 help
1249 Find out whether you have ISA slots on your motherboard. ISA is the
1250 name of a bus system, i.e. the way the CPU talks to the other stuff
1251 inside your box. Other bus systems are PCI, EISA, MicroChannel
1252 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1253 newer boards don't support it. If you have ISA, say Y, otherwise N.
1254
Russell King065909b2006-01-04 15:44:16 +00001255# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001256config ISA_DMA
1257 bool
Russell King065909b2006-01-04 15:44:16 +00001258 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001259
Russell King065909b2006-01-04 15:44:16 +00001260# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001261config ISA_DMA_API
1262 bool
Al Viro5cae8412005-05-04 05:39:22 +01001263
Linus Torvalds1da177e2005-04-16 15:20:36 -07001264config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001265 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001266 help
1267 Find out whether you have a PCI motherboard. PCI is the name of a
1268 bus system, i.e. the way the CPU talks to the other stuff inside
1269 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1270 VESA. If you have PCI, say Y, otherwise N.
1271
Anton Vorontsov52882172010-04-19 13:20:49 +01001272config PCI_DOMAINS
1273 bool
1274 depends on PCI
1275
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001276config PCI_NANOENGINE
1277 bool "BSE nanoEngine PCI support"
1278 depends on SA1100_NANOENGINE
1279 help
1280 Enable PCI on the BSE nanoEngine board.
1281
Matthew Wilcox36e23592007-07-10 10:54:40 -06001282config PCI_SYSCALL
1283 def_bool PCI
1284
Linus Torvalds1da177e2005-04-16 15:20:36 -07001285# Select the host bridge type
1286config PCI_HOST_VIA82C505
1287 bool
1288 depends on PCI && ARCH_SHARK
1289 default y
1290
Mike Rapoporta0113a92007-11-25 08:55:34 +01001291config PCI_HOST_ITE8152
1292 bool
1293 depends on PCI && MACH_ARMCORE
1294 default y
1295 select DMABOUNCE
1296
Linus Torvalds1da177e2005-04-16 15:20:36 -07001297source "drivers/pci/Kconfig"
1298
1299source "drivers/pcmcia/Kconfig"
1300
1301endmenu
1302
1303menu "Kernel Features"
1304
Kevin Hilman0567a0c2007-03-13 20:29:24 +01001305source "kernel/time/Kconfig"
1306
Linus Torvalds1da177e2005-04-16 15:20:36 -07001307config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001308 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001309 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001310 depends on GENERIC_CLOCKEVENTS
Russell King971acb92010-09-04 08:16:30 +01001311 depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
Daniel Walker89c3ded2010-11-22 12:35:41 -08001312 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
Kukjin Kim10606aa2011-02-14 15:05:27 +09001313 ARCH_EXYNOS4 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
Paul Mundte9d728f2011-01-07 10:51:35 +09001314 ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE
Jens Axboef6dd9fa2008-06-10 20:48:30 +02001315 select USE_GENERIC_SMP_HELPERS
Daniel Walker89c3ded2010-11-22 12:35:41 -08001316 select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
Linus Torvalds1da177e2005-04-16 15:20:36 -07001317 help
1318 This enables support for systems with more than one CPU. If you have
1319 a system with only one CPU, like most personal computers, say N. If
1320 you have a system with more than one CPU, say Y.
1321
1322 If you say N here, the kernel will run on single and multiprocessor
1323 machines, but will use only one CPU of a multiprocessor machine. If
1324 you say Y here, the kernel will run on many, but not all, single
1325 processor machines. On a single processor machine, the kernel will
1326 run faster if you say N here.
1327
Adrian Bunk03502fa2008-02-03 15:50:21 +02001328 See also <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001329 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001330 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001331
1332 If you don't know what to do here, say N.
1333
Russell Kingf00ec482010-09-04 10:47:48 +01001334config SMP_ON_UP
1335 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
1336 depends on EXPERIMENTAL
Nicolas Pitre4d2692a2011-01-14 07:33:24 +01001337 depends on SMP && !XIP_KERNEL
Russell Kingf00ec482010-09-04 10:47:48 +01001338 default y
1339 help
1340 SMP kernels contain instructions which fail on non-SMP processors.
1341 Enabling this option allows the kernel to modify itself to make
1342 these instructions safe. Disabling it allows about 1K of space
1343 savings.
1344
1345 If you don't know what to do here, say Y.
1346
Russell Kinga8cbcd92009-05-16 11:51:14 +01001347config HAVE_ARM_SCU
1348 bool
1349 depends on SMP
1350 help
1351 This option enables support for the ARM system coherency unit
1352
Russell Kingf32f4ce2009-05-16 12:14:21 +01001353config HAVE_ARM_TWD
1354 bool
1355 depends on SMP
Russell King15095bb2011-01-02 15:05:21 +00001356 select TICK_ONESHOT
Russell Kingf32f4ce2009-05-16 12:14:21 +01001357 help
1358 This options enables support for the ARM timer and watchdog unit
1359
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001360choice
1361 prompt "Memory split"
1362 default VMSPLIT_3G
1363 help
1364 Select the desired split between kernel and user memory.
1365
1366 If you are not absolutely sure what you are doing, leave this
1367 option alone!
1368
1369 config VMSPLIT_3G
1370 bool "3G/1G user/kernel split"
1371 config VMSPLIT_2G
1372 bool "2G/2G user/kernel split"
1373 config VMSPLIT_1G
1374 bool "1G/3G user/kernel split"
1375endchoice
1376
1377config PAGE_OFFSET
1378 hex
1379 default 0x40000000 if VMSPLIT_1G
1380 default 0x80000000 if VMSPLIT_2G
1381 default 0xC0000000
1382
Linus Torvalds1da177e2005-04-16 15:20:36 -07001383config NR_CPUS
1384 int "Maximum number of CPUs (2-32)"
1385 range 2 32
1386 depends on SMP
1387 default "4"
1388
Russell Kinga054a812005-11-02 22:24:33 +00001389config HOTPLUG_CPU
1390 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1391 depends on SMP && HOTPLUG && EXPERIMENTAL
1392 help
1393 Say Y here to experiment with turning CPUs off and on. CPUs
1394 can be controlled through /sys/devices/system/cpu.
1395
Russell King37ee16a2005-11-08 19:08:05 +00001396config LOCAL_TIMERS
1397 bool "Use local timer interrupts"
Russell King971acb92010-09-04 08:16:30 +01001398 depends on SMP
Russell King37ee16a2005-11-08 19:08:05 +00001399 default y
Changhwan Youn30d8bea2011-03-11 10:39:57 +09001400 select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
Russell King37ee16a2005-11-08 19:08:05 +00001401 help
1402 Enable support for local timers on SMP platforms, rather then the
1403 legacy IPI broadcast method. Local timers allows the system
1404 accounting to be spread across the timer interval, preventing a
1405 "thundering herd" at every timer tick.
1406
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001407source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001408
Russell Kingf8065812006-03-02 22:41:59 +00001409config HZ
1410 int
Kukjin Kim49b7a492010-09-07 15:47:18 +09001411 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001412 ARCH_S5PV210 || ARCH_EXYNOS4
Russell Kingbfe65702006-03-04 11:01:53 +00001413 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
David Brownell5248c652007-11-12 17:59:10 +01001414 default AT91_TIMER_HZ if ARCH_AT91
Magnus Damm5da3e712010-07-29 14:03:04 +01001415 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
Russell Kingf8065812006-03-02 22:41:59 +00001416 default 100
1417
Catalin Marinas16c79652009-07-24 12:33:02 +01001418config THUMB2_KERNEL
Russell King4a50bfe2010-12-05 23:06:22 +00001419 bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
Russell Kinge399b1a2011-01-17 15:08:32 +00001420 depends on CPU_V7 && !CPU_V6 && !CPU_V6K && EXPERIMENTAL
Catalin Marinas16c79652009-07-24 12:33:02 +01001421 select AEABI
1422 select ARM_ASM_UNIFIED
1423 help
1424 By enabling this option, the kernel will be compiled in
1425 Thumb-2 mode. A compiler/assembler that understand the unified
1426 ARM-Thumb syntax is needed.
1427
1428 If unsure, say N.
1429
Dave Martin6f685c52011-03-03 11:41:12 +01001430config THUMB2_AVOID_R_ARM_THM_JUMP11
1431 bool "Work around buggy Thumb-2 short branch relocations in gas"
1432 depends on THUMB2_KERNEL && MODULES
1433 default y
1434 help
1435 Various binutils versions can resolve Thumb-2 branches to
1436 locally-defined, preemptible global symbols as short-range "b.n"
1437 branch instructions.
1438
1439 This is a problem, because there's no guarantee the final
1440 destination of the symbol, or any candidate locations for a
1441 trampoline, are within range of the branch. For this reason, the
1442 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1443 relocation in modules at all, and it makes little sense to add
1444 support.
1445
1446 The symptom is that the kernel fails with an "unsupported
1447 relocation" error when loading some modules.
1448
1449 Until fixed tools are available, passing
1450 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1451 code which hits this problem, at the cost of a bit of extra runtime
1452 stack usage in some cases.
1453
1454 The problem is described in more detail at:
1455 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1456
1457 Only Thumb-2 kernels are affected.
1458
1459 Unless you are sure your tools don't have this problem, say Y.
1460
Catalin Marinas0becb082009-07-24 12:32:53 +01001461config ARM_ASM_UNIFIED
1462 bool
1463
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001464config AEABI
1465 bool "Use the ARM EABI to compile the kernel"
1466 help
1467 This option allows for the kernel to be compiled using the latest
1468 ARM ABI (aka EABI). This is only useful if you are using a user
1469 space environment that is also compiled with EABI.
1470
1471 Since there are major incompatibilities between the legacy ABI and
1472 EABI, especially with regard to structure member alignment, this
1473 option also changes the kernel syscall calling convention to
1474 disambiguate both ABIs and allow for backward compatibility support
1475 (selected with CONFIG_OABI_COMPAT).
1476
1477 To use this you need GCC version 4.0.0 or later.
1478
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001479config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001480 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Dave Martin9bc433a2011-02-11 16:41:20 +01001481 depends on AEABI && EXPERIMENTAL && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001482 default y
1483 help
1484 This option preserves the old syscall interface along with the
1485 new (ARM EABI) one. It also provides a compatibility layer to
1486 intercept syscalls that have structure arguments which layout
1487 in memory differs between the legacy ABI and the new ARM EABI
1488 (only for non "thumb" binaries). This option adds a tiny
1489 overhead to all syscalls and produces a slightly larger kernel.
1490 If you know you'll be using only pure EABI user space then you
1491 can say N here. If this option is not selected and you attempt
1492 to execute a legacy ABI binary then the result will be
1493 UNPREDICTABLE (in fact it can be predicted that it won't work
1494 at all). If in doubt say Y.
1495
Mel Gormaneb335752009-05-13 17:34:48 +01001496config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001497 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001498
Russell King05944d72006-11-30 20:43:51 +00001499config ARCH_SPARSEMEM_ENABLE
1500 bool
1501
Russell King07a2f732008-10-01 21:39:58 +01001502config ARCH_SPARSEMEM_DEFAULT
1503 def_bool ARCH_SPARSEMEM_ENABLE
1504
Russell King05944d72006-11-30 20:43:51 +00001505config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001506 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001507
Will Deacon7b7bf492011-05-19 13:21:14 +01001508config HAVE_ARCH_PFN_VALID
1509 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1510
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001511config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001512 bool "High Memory Support"
1513 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001514 help
1515 The address space of ARM processors is only 4 Gigabytes large
1516 and it has to accommodate user address space, kernel address
1517 space as well as some memory mapped IO. That means that, if you
1518 have a large amount of physical memory and/or IO, not all of the
1519 memory can be "permanently mapped" by the kernel. The physical
1520 memory that is not permanently mapped is called "high memory".
1521
1522 Depending on the selected kernel/user memory split, minimum
1523 vmalloc space and actual amount of RAM, you may not need this
1524 option which should result in a slightly faster kernel.
1525
1526 If unsure, say n.
1527
Russell King65cec8e2009-08-17 20:02:06 +01001528config HIGHPTE
1529 bool "Allocate 2nd-level pagetables from highmem"
1530 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001531
Jamie Iles1b8873a2010-02-02 20:25:44 +01001532config HW_PERF_EVENTS
1533 bool "Enable hardware performance counter support for perf events"
Will Deaconfe166142010-04-30 11:37:51 +01001534 depends on PERF_EVENTS && CPU_HAS_PMU
Jamie Iles1b8873a2010-02-02 20:25:44 +01001535 default y
1536 help
1537 Enable hardware performance counter support for perf events. If
1538 disabled, perf events will use software events only.
1539
Dave Hansen3f22ab22005-06-23 00:07:43 -07001540source "mm/Kconfig"
1541
Magnus Dammc1b2d972010-07-05 10:00:11 +01001542config FORCE_MAX_ZONEORDER
1543 int "Maximum zone order" if ARCH_SHMOBILE
1544 range 11 64 if ARCH_SHMOBILE
1545 default "9" if SA1111
1546 default "11"
1547 help
1548 The kernel memory allocator divides physically contiguous memory
1549 blocks into "zones", where each zone is a power of two number of
1550 pages. This option selects the largest power of two that the kernel
1551 keeps in the memory allocator. If you need to allocate very large
1552 blocks of physically contiguous memory, then you may need to
1553 increase this value.
1554
1555 This config option is actually maximum order plus one. For example,
1556 a value of 11 means that the largest free memory block is 2^10 pages.
1557
Linus Torvalds1da177e2005-04-16 15:20:36 -07001558config LEDS
1559 bool "Timer and CPU usage LEDs"
Adrian Bunke055d5bf2008-04-22 01:43:27 +01001560 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
Sascha Hauer8c8fdbc2009-04-01 12:40:15 +02001561 ARCH_EBSA285 || ARCH_INTEGRATOR || \
Linus Torvalds1da177e2005-04-16 15:20:36 -07001562 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1563 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
SAN People73a59c12006-01-09 17:05:41 +00001564 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
Jürgen Schindele25329672008-09-16 21:36:30 +01001565 ARCH_AT91 || ARCH_DAVINCI || \
Colin Tuckleyff3042f2009-05-30 13:56:13 +01001566 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
Linus Torvalds1da177e2005-04-16 15:20:36 -07001567 help
1568 If you say Y here, the LEDs on your machine will be used
1569 to provide useful information about your current system status.
1570
1571 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1572 be able to select which LEDs are active using the options below. If
1573 you are compiling a kernel for the EBSA-110 or the LART however, the
1574 red LED will simply flash regularly to indicate that the system is
1575 still functional. It is safe to say Y here if you have a CATS
1576 system, but the driver will do nothing.
1577
1578config LEDS_TIMER
1579 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
David Brownelleebdf7d72007-04-02 12:48:10 -07001580 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1581 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -07001582 depends on LEDS
Kevin Hilman0567a0c2007-03-13 20:29:24 +01001583 depends on !GENERIC_CLOCKEVENTS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001584 default y if ARCH_EBSA110
1585 help
1586 If you say Y here, one of the system LEDs (the green one on the
1587 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1588 will flash regularly to indicate that the system is still
1589 operational. This is mainly useful to kernel hackers who are
1590 debugging unstable kernels.
1591
1592 The LART uses the same LED for both Timer LED and CPU usage LED
1593 functions. You may choose to use both, but the Timer LED function
1594 will overrule the CPU usage LED.
1595
1596config LEDS_CPU
1597 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
David Brownelleebdf7d72007-04-02 12:48:10 -07001598 !ARCH_OMAP) \
1599 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1600 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -07001601 depends on LEDS
1602 help
1603 If you say Y here, the red LED will be used to give a good real
1604 time indication of CPU usage, by lighting whenever the idle task
1605 is not currently executing.
1606
1607 The LART uses the same LED for both Timer LED and CPU usage LED
1608 functions. You may choose to use both, but the Timer LED function
1609 will overrule the CPU usage LED.
1610
1611config ALIGNMENT_TRAP
1612 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001613 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001614 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001615 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001616 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001617 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001618 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1619 address divisible by 4. On 32-bit ARM processors, these non-aligned
1620 fetch/store instructions will be emulated in software if you say
1621 here, which has a severe performance impact. This is necessary for
1622 correct operation of some network protocols. With an IP-only
1623 configuration it is safe to say N, otherwise say Y.
1624
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001625config UACCESS_WITH_MEMCPY
1626 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1627 depends on MMU && EXPERIMENTAL
1628 default y if CPU_FEROCEON
1629 help
1630 Implement faster copy_to_user and clear_user methods for CPU
1631 cores where a 8-word STM instruction give significantly higher
1632 memory write throughput than a sequence of individual 32bit stores.
1633
1634 A possible side effect is a slight increase in scheduling latency
1635 between threads sharing the same address space if they invoke
1636 such copy operations with large buffers.
1637
1638 However, if the CPU data cache is using a write-allocate mode,
1639 this option is unlikely to provide any performance gain.
1640
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001641config SECCOMP
1642 bool
1643 prompt "Enable seccomp to safely compute untrusted bytecode"
1644 ---help---
1645 This kernel feature is useful for number crunching applications
1646 that may need to compute untrusted bytecode during their
1647 execution. By using pipes or other transports made available to
1648 the process as file descriptors supporting the read/write
1649 syscalls, it's possible to isolate those applications in
1650 their own address space using seccomp. Once seccomp is
1651 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1652 and the task is only allowed to execute a few safe syscalls
1653 defined by each seccomp mode.
1654
Nicolas Pitrec743f382010-05-24 23:55:42 -04001655config CC_STACKPROTECTOR
1656 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
Russell King4a50bfe2010-12-05 23:06:22 +00001657 depends on EXPERIMENTAL
Nicolas Pitrec743f382010-05-24 23:55:42 -04001658 help
1659 This option turns on the -fstack-protector GCC feature. This
1660 feature puts, at the beginning of functions, a canary value on
1661 the stack just before the return address, and validates
1662 the value just before actually returning. Stack based buffer
1663 overflows (that need to overwrite this return address) now also
1664 overwrite the canary, which gets detected and the attack is then
1665 neutralized via a kernel panic.
1666 This feature requires gcc version 4.2 or above.
1667
Uwe Kleine-König73a65b32010-01-19 10:13:14 +01001668config DEPRECATED_PARAM_STRUCT
1669 bool "Provide old way to pass kernel parameters"
1670 help
1671 This was deprecated in 2001 and announced to live on for 5 years.
1672 Some old boot loaders still use this way.
1673
Linus Torvalds1da177e2005-04-16 15:20:36 -07001674endmenu
1675
1676menu "Boot options"
1677
Grant Likely9eb8f672011-04-28 14:27:20 -06001678config USE_OF
1679 bool "Flattened Device Tree support"
1680 select OF
1681 select OF_EARLY_FLATTREE
1682 help
1683 Include support for flattened device tree machine descriptions.
1684
Linus Torvalds1da177e2005-04-16 15:20:36 -07001685# Compressed boot loader in ROM. Yes, we really want to ask about
1686# TEXT and BSS so we preserve their values in the config files.
1687config ZBOOT_ROM_TEXT
1688 hex "Compressed ROM boot loader base address"
1689 default "0"
1690 help
1691 The physical address at which the ROM-able zImage is to be
1692 placed in the target. Platforms which normally make use of
1693 ROM-able zImage formats normally set this to a suitable
1694 value in their defconfig file.
1695
1696 If ZBOOT_ROM is not enabled, this has no effect.
1697
1698config ZBOOT_ROM_BSS
1699 hex "Compressed ROM boot loader BSS address"
1700 default "0"
1701 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001702 The base address of an area of read/write memory in the target
1703 for the ROM-able zImage which must be available while the
1704 decompressor is running. It must be large enough to hold the
1705 entire decompressed kernel plus an additional 128 KiB.
1706 Platforms which normally make use of ROM-able zImage formats
1707 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001708
1709 If ZBOOT_ROM is not enabled, this has no effect.
1710
1711config ZBOOT_ROM
1712 bool "Compressed boot loader in ROM/flash"
1713 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1714 help
1715 Say Y here if you intend to execute your compressed kernel image
1716 (zImage) directly from ROM or flash. If unsure, say N.
1717
Simon Hormanf45b1142011-01-11 04:01:08 +01001718config ZBOOT_ROM_MMCIF
1719 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
1720 depends on ZBOOT_ROM && ARCH_SH7372 && EXPERIMENTAL
1721 help
1722 Say Y here to include experimental MMCIF loading code in the
1723 ROM-able zImage. With this enabled it is possible to write the
1724 the ROM-able zImage kernel image to an MMC card and boot the
1725 kernel straight from the reset vector. At reset the processor
1726 Mask ROM will load the first part of the the ROM-able zImage
1727 which in turn loads the rest the kernel image to RAM using the
1728 MMCIF hardware block.
1729
Linus Torvalds1da177e2005-04-16 15:20:36 -07001730config CMDLINE
1731 string "Default kernel command string"
1732 default ""
1733 help
1734 On some architectures (EBSA110 and CATS), there is currently no way
1735 for the boot loader to pass arguments to the kernel. For these
1736 architectures, you should supply some command-line options at build
1737 time by entering them here. As a minimum, you should specify the
1738 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1739
Victor Boivie4394c122011-05-04 17:07:55 +01001740choice
1741 prompt "Kernel command line type" if CMDLINE != ""
1742 default CMDLINE_FROM_BOOTLOADER
1743
1744config CMDLINE_FROM_BOOTLOADER
1745 bool "Use bootloader kernel arguments if available"
1746 help
1747 Uses the command-line options passed by the boot loader. If
1748 the boot loader doesn't provide any, the default kernel command
1749 string provided in CMDLINE will be used.
1750
1751config CMDLINE_EXTEND
1752 bool "Extend bootloader kernel arguments"
1753 help
1754 The command-line arguments provided by the boot loader will be
1755 appended to the default kernel command string.
1756
Alexander Holler92d20402010-02-16 19:04:53 +01001757config CMDLINE_FORCE
1758 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001759 help
1760 Always use the default kernel command string, even if the boot
1761 loader passes other arguments to the kernel.
1762 This is useful if you cannot or don't want to change the
1763 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001764endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001765
Linus Torvalds1da177e2005-04-16 15:20:36 -07001766config XIP_KERNEL
1767 bool "Kernel Execute-In-Place from ROM"
1768 depends on !ZBOOT_ROM
1769 help
1770 Execute-In-Place allows the kernel to run from non-volatile storage
1771 directly addressable by the CPU, such as NOR flash. This saves RAM
1772 space since the text section of the kernel is not loaded from flash
1773 to RAM. Read-write sections, such as the data section and stack,
1774 are still copied to RAM. The XIP kernel is not compressed since
1775 it has to run directly from flash, so it will take more space to
1776 store it. The flash address used to link the kernel object files,
1777 and for storing it, is configuration dependent. Therefore, if you
1778 say Y here, you must know the proper physical address where to
1779 store the kernel image depending on your own flash memory usage.
1780
1781 Also note that the make target becomes "make xipImage" rather than
1782 "make zImage" or "make Image". The final kernel binary to put in
1783 ROM memory will be arch/arm/boot/xipImage.
1784
1785 If unsure, say N.
1786
1787config XIP_PHYS_ADDR
1788 hex "XIP Kernel Physical Location"
1789 depends on XIP_KERNEL
1790 default "0x00080000"
1791 help
1792 This is the physical address in your flash memory the kernel will
1793 be linked for and stored to. This address is dependent on your
1794 own flash usage.
1795
Richard Purdiec587e4a2007-02-06 21:29:00 +01001796config KEXEC
1797 bool "Kexec system call (EXPERIMENTAL)"
1798 depends on EXPERIMENTAL
1799 help
1800 kexec is a system call that implements the ability to shutdown your
1801 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02001802 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01001803 you can start any kernel with it, not just Linux.
1804
1805 It is an ongoing process to be certain the hardware in a machine
1806 is properly shutdown, so do not be surprised if this code does not
1807 initially work for you. It may help to enable device hotplugging
1808 support.
1809
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01001810config ATAGS_PROC
1811 bool "Export atags in procfs"
Uli Luckasb98d7292008-02-22 16:45:18 +01001812 depends on KEXEC
1813 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01001814 help
1815 Should the atags used to boot the kernel be exported in an "atags"
1816 file in procfs. Useful with kexec.
1817
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01001818config CRASH_DUMP
1819 bool "Build kdump crash kernel (EXPERIMENTAL)"
1820 depends on EXPERIMENTAL
1821 help
1822 Generate crash dump after being started by kexec. This should
1823 be normally only set in special crash dump kernels which are
1824 loaded in the main kernel with kexec-tools into a specially
1825 reserved region and then later executed after a crash by
1826 kdump/kexec. The crash dump kernel must be compiled to a
1827 memory address not used by the main kernel
1828
1829 For more details see Documentation/kdump/kdump.txt
1830
Eric Miaoe69edc792010-07-05 15:56:50 +02001831config AUTO_ZRELADDR
1832 bool "Auto calculation of the decompressed kernel image address"
1833 depends on !ZBOOT_ROM && !ARCH_U300
1834 help
1835 ZRELADDR is the physical address where the decompressed kernel
1836 image will be placed. If AUTO_ZRELADDR is selected, the address
1837 will be determined at run-time by masking the current IP with
1838 0xf8000000. This assumes the zImage being placed in the first 128MB
1839 from start of memory.
1840
Linus Torvalds1da177e2005-04-16 15:20:36 -07001841endmenu
1842
Russell Kingac9d7ef2008-08-18 17:26:00 +01001843menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001844
Ben Dooks89c52ed2009-07-30 23:23:24 +01001845if ARCH_HAS_CPUFREQ
Linus Torvalds1da177e2005-04-16 15:20:36 -07001846
1847source "drivers/cpufreq/Kconfig"
1848
Yong Shen64f102b2010-10-21 21:18:59 +08001849config CPU_FREQ_IMX
1850 tristate "CPUfreq driver for i.MX CPUs"
1851 depends on ARCH_MXC && CPU_FREQ
1852 help
1853 This enables the CPUfreq driver for i.MX CPUs.
1854
Linus Torvalds1da177e2005-04-16 15:20:36 -07001855config CPU_FREQ_SA1100
1856 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001857
1858config CPU_FREQ_SA1110
1859 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001860
1861config CPU_FREQ_INTEGRATOR
1862 tristate "CPUfreq driver for ARM Integrator CPUs"
1863 depends on ARCH_INTEGRATOR && CPU_FREQ
1864 default y
1865 help
1866 This enables the CPUfreq driver for ARM Integrator CPUs.
1867
1868 For details, take a look at <file:Documentation/cpu-freq>.
1869
1870 If in doubt, say Y.
1871
Russell King9e2697f2007-12-14 13:30:14 +00001872config CPU_FREQ_PXA
1873 bool
1874 depends on CPU_FREQ && ARCH_PXA && PXA25x
1875 default y
1876 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1877
Mark Brownb3748dd2009-06-15 11:23:20 +01001878config CPU_FREQ_S3C64XX
1879 bool "CPUfreq support for Samsung S3C64XX CPUs"
1880 depends on CPU_FREQ && CPU_S3C6410
1881
Ben Dooks9d56c022009-07-30 23:23:25 +01001882config CPU_FREQ_S3C
1883 bool
1884 help
1885 Internal configuration node for common cpufreq on Samsung SoC
1886
1887config CPU_FREQ_S3C24XX
Russell King4a50bfe2010-12-05 23:06:22 +00001888 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
Ben Dooks9d56c022009-07-30 23:23:25 +01001889 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1890 select CPU_FREQ_S3C
1891 help
1892 This enables the CPUfreq driver for the Samsung S3C24XX family
1893 of CPUs.
1894
1895 For details, take a look at <file:Documentation/cpu-freq>.
1896
1897 If in doubt, say N.
1898
1899config CPU_FREQ_S3C24XX_PLL
Russell King4a50bfe2010-12-05 23:06:22 +00001900 bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
Ben Dooks9d56c022009-07-30 23:23:25 +01001901 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1902 help
1903 Compile in support for changing the PLL frequency from the
1904 S3C24XX series CPUfreq driver. The PLL takes time to settle
1905 after a frequency change, so by default it is not enabled.
1906
1907 This also means that the PLL tables for the selected CPU(s) will
1908 be built which may increase the size of the kernel image.
1909
1910config CPU_FREQ_S3C24XX_DEBUG
1911 bool "Debug CPUfreq Samsung driver core"
1912 depends on CPU_FREQ_S3C24XX
1913 help
1914 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1915
1916config CPU_FREQ_S3C24XX_IODEBUG
1917 bool "Debug CPUfreq Samsung driver IO timing"
1918 depends on CPU_FREQ_S3C24XX
1919 help
1920 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1921
Ben Dookse6d197a2009-07-30 23:23:42 +01001922config CPU_FREQ_S3C24XX_DEBUGFS
1923 bool "Export debugfs for CPUFreq"
1924 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1925 help
1926 Export status information via debugfs.
1927
Linus Torvalds1da177e2005-04-16 15:20:36 -07001928endif
1929
Russell Kingac9d7ef2008-08-18 17:26:00 +01001930source "drivers/cpuidle/Kconfig"
1931
1932endmenu
1933
Linus Torvalds1da177e2005-04-16 15:20:36 -07001934menu "Floating point emulation"
1935
1936comment "At least one emulation must be selected"
1937
1938config FPE_NWFPE
1939 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01001940 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001941 ---help---
1942 Say Y to include the NWFPE floating point emulator in the kernel.
1943 This is necessary to run most binaries. Linux does not currently
1944 support floating point hardware so you need to say Y here even if
1945 your machine has an FPA or floating point co-processor podule.
1946
1947 You may say N here if you are going to load the Acorn FPEmulator
1948 early in the bootup.
1949
1950config FPE_NWFPE_XP
1951 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00001952 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07001953 help
1954 Say Y to include 80-bit support in the kernel floating-point
1955 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1956 Note that gcc does not generate 80-bit operations by default,
1957 so in most cases this option only enlarges the size of the
1958 floating point emulator without any good reason.
1959
1960 You almost surely want to say N here.
1961
1962config FPE_FASTFPE
1963 bool "FastFPE math emulation (EXPERIMENTAL)"
Nicolas Pitre8993a442006-01-14 16:36:50 +00001964 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001965 ---help---
1966 Say Y here to include the FAST floating point emulator in the kernel.
1967 This is an experimental much faster emulator which now also has full
1968 precision for the mantissa. It does not support any exceptions.
1969 It is very simple, and approximately 3-6 times faster than NWFPE.
1970
1971 It should be sufficient for most programs. It may be not suitable
1972 for scientific calculations, but you have to check this for yourself.
1973 If you do not feel you need a faster FP emulation you should better
1974 choose NWFPE.
1975
1976config VFP
1977 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00001978 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07001979 help
1980 Say Y to include VFP support code in the kernel. This is needed
1981 if your hardware includes a VFP unit.
1982
1983 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1984 release notes and additional status information.
1985
1986 Say N if your target does not have VFP hardware.
1987
Catalin Marinas25ebee02007-09-25 15:22:24 +01001988config VFPv3
1989 bool
1990 depends on VFP
1991 default y if CPU_V7
1992
Catalin Marinasb5872db2008-01-10 19:16:17 +01001993config NEON
1994 bool "Advanced SIMD (NEON) Extension support"
1995 depends on VFPv3 && CPU_V7
1996 help
1997 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1998 Extension.
1999
Linus Torvalds1da177e2005-04-16 15:20:36 -07002000endmenu
2001
2002menu "Userspace binary formats"
2003
2004source "fs/Kconfig.binfmt"
2005
2006config ARTHUR
2007 tristate "RISC OS personality"
Nicolas Pitre704bdda02006-01-14 16:33:50 +00002008 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07002009 help
2010 Say Y here to include the kernel code necessary if you want to run
2011 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2012 experimental; if this sounds frightening, say N and sleep in peace.
2013 You can also say M here to compile this support as a module (which
2014 will be called arthur).
2015
2016endmenu
2017
2018menu "Power management options"
2019
Russell Kingeceab4a2005-11-15 11:31:41 +00002020source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002021
Johannes Bergf4cb5702007-12-08 02:14:00 +01002022config ARCH_SUSPEND_POSSIBLE
Russell King586893e2011-05-25 21:47:48 +01002023 depends on !ARCH_S5P64X0 && !ARCH_S5PC100
Russell King6a786182011-04-02 10:15:28 +01002024 depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
2025 CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE
Johannes Bergf4cb5702007-12-08 02:14:00 +01002026 def_bool y
2027
Linus Torvalds1da177e2005-04-16 15:20:36 -07002028endmenu
2029
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002030source "net/Kconfig"
2031
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002032source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002033
2034source "fs/Kconfig"
2035
Linus Torvalds1da177e2005-04-16 15:20:36 -07002036source "arch/arm/Kconfig.debug"
2037
2038source "security/Kconfig"
2039
2040source "crypto/Kconfig"
2041
2042source "lib/Kconfig"