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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
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900242 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000243 select ICST
Russell King13edd862010-01-15 21:49:23 +0000244 select GENERIC_CLOCKEVENTS
Russell Kingf4b8b312010-01-14 12:48:06 +0000245 select PLAT_VERSATILE
Russell Kingc41b16f2011-01-19 15:32:15 +0000246 select PLAT_VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100247 help
248 Support for ARM's Integrator platform.
249
250config ARCH_REALVIEW
251 bool "ARM Ltd. RealView family"
252 select ARM_AMBA
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100253 select CLKDEV_LOOKUP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900254 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000255 select ICST
Catalin Marinasae30cea2008-02-04 17:26:55 +0100256 select GENERIC_CLOCKEVENTS
Russell Kingeb7fffa2009-07-05 22:41:31 +0100257 select ARCH_WANT_OPTIONAL_GPIOLIB
Russell Kingf4b8b312010-01-14 12:48:06 +0000258 select PLAT_VERSATILE
Russell King3cb5ee42011-01-18 20:13:20 +0000259 select PLAT_VERSATILE_CLCD
Russell Kinge3887712010-01-14 13:30:16 +0000260 select ARM_TIMER_SP804
Colin Tuckleyb56ba8a2010-02-24 15:23:10 +0100261 select GPIO_PL061 if GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100262 help
263 This enables support for ARM Ltd RealView boards.
264
265config ARCH_VERSATILE
266 bool "ARM Ltd. Versatile family"
267 select ARM_AMBA
268 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100269 select CLKDEV_LOOKUP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900270 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000271 select ICST
Kevin Hilman89df1272007-03-08 20:30:38 +0100272 select GENERIC_CLOCKEVENTS
Russell Kingbbeddc42009-07-05 22:43:01 +0100273 select ARCH_WANT_OPTIONAL_GPIOLIB
Russell Kingf4b8b312010-01-14 12:48:06 +0000274 select PLAT_VERSATILE
Russell King3414ba82011-01-18 20:12:10 +0000275 select PLAT_VERSATILE_CLCD
Russell Kingc41b16f2011-01-19 15:32:15 +0000276 select PLAT_VERSATILE_FPGA_IRQ
Russell Kinge3887712010-01-14 13:30:16 +0000277 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100278 help
279 This enables support for ARM Ltd Versatile board.
280
Russell Kingceade892010-02-11 21:44:53 +0000281config ARCH_VEXPRESS
282 bool "ARM Ltd. Versatile Express family"
283 select ARCH_WANT_OPTIONAL_GPIOLIB
284 select ARM_AMBA
285 select ARM_TIMER_SP804
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100286 select CLKDEV_LOOKUP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900287 select HAVE_MACH_CLKDEV
Russell Kingceade892010-02-11 21:44:53 +0000288 select GENERIC_CLOCKEVENTS
Russell Kingceade892010-02-11 21:44:53 +0000289 select HAVE_CLK
Nick Bowler95c34f82011-01-21 15:51:06 +0100290 select HAVE_PATA_PLATFORM
Russell Kingceade892010-02-11 21:44:53 +0000291 select ICST
292 select PLAT_VERSATILE
Russell King0fb44b92011-01-18 20:13:51 +0000293 select PLAT_VERSATILE_CLCD
Russell Kingceade892010-02-11 21:44:53 +0000294 help
295 This enables support for the ARM Ltd Versatile Express boards.
296
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100297config ARCH_AT91
298 bool "Atmel AT91"
Ryan Mallonf373e8c2009-02-10 21:02:08 +0100299 select ARCH_REQUIRE_GPIOLIB
David Brownell93686ae2008-07-28 15:46:22 -0700300 select HAVE_CLK
Jean-Christophe PLAGNIOL-VILLARDbd602992011-02-02 07:27:07 +0100301 select CLKDEV_LOOKUP
Jean-Christophe PLAGNIOL-VILLARD3d51f252011-05-03 00:44:58 +0800302 select ARM_PATCH_PHYS_VIRT if MMU
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100303 help
Andrew Victor2b3b3512008-01-24 15:10:39 +0100304 This enables support for systems based on the Atmel AT91RM9200,
305 AT91SAM9 and AT91CAP9 processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100306
Russell Kingccf50e22010-03-15 19:03:06 +0000307config ARCH_BCMRING
308 bool "Broadcom BCMRING"
309 depends on MMU
310 select CPU_V6
311 select ARM_AMBA
Russell King82d63732011-05-12 13:43:39 +0100312 select ARM_TIMER_SP804
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100313 select CLKDEV_LOOKUP
Russell Kingccf50e22010-03-15 19:03:06 +0000314 select GENERIC_CLOCKEVENTS
315 select ARCH_WANT_OPTIONAL_GPIOLIB
316 help
317 Support for Broadcom's BCMRing platform.
318
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319config ARCH_CLPS711X
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100320 bool "Cirrus Logic CLPS711x/EP721x-based"
Russell Kingc7508152008-10-26 10:55:14 +0000321 select CPU_ARM720T
John Stultz5cfc8ee2010-03-24 00:22:36 +0000322 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000323 help
324 Support for Cirrus Logic 711x/721x based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300326config ARCH_CNS3XXX
327 bool "Cavium Networks CNS3XXX family"
328 select CPU_V6
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300329 select GENERIC_CLOCKEVENTS
330 select ARM_GIC
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100331 select MIGHT_HAVE_PCI
Anton Vorontsov5f32f7a2010-05-28 13:10:52 +0400332 select PCI_DOMAINS if PCI
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300333 help
334 Support for Cavium Networks CNS3XXX platform.
335
Russell King788c9702009-04-26 14:21:59 +0100336config ARCH_GEMINI
337 bool "Cortina Systems Gemini"
338 select CPU_FA526
Russell King788c9702009-04-26 14:21:59 +0100339 select ARCH_REQUIRE_GPIOLIB
John Stultz5cfc8ee2010-03-24 00:22:36 +0000340 select ARCH_USES_GETTIMEOFFSET
Russell King788c9702009-04-26 14:21:59 +0100341 help
342 Support for the Cortina Systems Gemini family SoCs
343
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344config ARCH_EBSA110
345 bool "EBSA-110"
Russell Kingc7508152008-10-26 10:55:14 +0000346 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100347 select ISA
Russell Kingc5eb2a22007-03-03 11:54:19 +0000348 select NO_IOPORT
John Stultz5cfc8ee2010-03-24 00:22:36 +0000349 select ARCH_USES_GETTIMEOFFSET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 help
351 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000352 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353 Ethernet interface, two PCMCIA sockets, two serial ports and a
354 parallel port.
355
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000356config ARCH_EP93XX
357 bool "EP93xx-based"
Russell Kingc7508152008-10-26 10:55:14 +0000358 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000359 select ARM_AMBA
360 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100361 select CLKDEV_LOOKUP
Michael Buesch7444a722008-07-25 01:46:11 -0700362 select ARCH_REQUIRE_GPIOLIB
Mel Gormaneb335752009-05-13 17:34:48 +0100363 select ARCH_HAS_HOLES_MEMORYMODEL
John Stultz5cfc8ee2010-03-24 00:22:36 +0000364 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000365 help
366 This enables support for the Cirrus EP93xx series of CPUs.
367
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368config ARCH_FOOTBRIDGE
369 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000370 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000372 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000373 help
374 Support for systems based on the DC21285 companion chip
375 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376
Russell King788c9702009-04-26 14:21:59 +0100377config ARCH_MXC
378 bool "Freescale MXC/iMX-based"
Russell King788c9702009-04-26 14:21:59 +0100379 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100380 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100381 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100382 select CLKSRC_MMIO
Jan Weitzelc124bef2011-03-17 13:44:30 +0100383 select HAVE_SCHED_CLOCK
Russell King788c9702009-04-26 14:21:59 +0100384 help
385 Support for Freescale MXC/iMX-based family of processors
386
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800387config ARCH_MXS
388 bool "Freescale MXS-based"
389 select GENERIC_CLOCKEVENTS
390 select ARCH_REQUIRE_GPIOLIB
Sascha Hauerb9214b92011-01-13 16:59:25 +0100391 select CLKDEV_LOOKUP
Russell King5c61ddc2011-05-08 17:21:49 +0100392 select CLKSRC_MMIO
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800393 help
394 Support for Freescale MXS-based family of processors
395
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100396config ARCH_NETX
397 bool "Hilscher NetX based"
Russell King234b6ced2011-05-08 14:09:47 +0100398 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000399 select CPU_ARM926T
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100400 select ARM_VIC
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100401 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000402 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100403 This enables support for systems based on the Hilscher NetX Soc
404
405config ARCH_H720X
406 bool "Hynix HMS720x-based"
Russell Kingc7508152008-10-26 10:55:14 +0000407 select CPU_ARM720T
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100408 select ISA_DMA_API
John Stultz5cfc8ee2010-03-24 00:22:36 +0000409 select ARCH_USES_GETTIMEOFFSET
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100410 help
411 This enables support for systems based on the Hynix HMS720x
412
Russell King3b938be2007-05-12 11:25:44 +0100413config ARCH_IOP13XX
414 bool "IOP13xx-based"
415 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000416 select CPU_XSC3
Russell King3b938be2007-05-12 11:25:44 +0100417 select PLAT_IOP
418 select PCI
419 select ARCH_SUPPORTS_MSI
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +0100420 select VMSPLIT_1G
Russell King3b938be2007-05-12 11:25:44 +0100421 help
422 Support for Intel's IOP13XX (XScale) family of processors.
423
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100424config ARCH_IOP32X
425 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100426 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000427 select CPU_XSCALE
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100428 select PLAT_IOP
Russell Kingf7e68bb2005-05-05 14:49:01 +0100429 select PCI
Russell Kingbb2b1802008-07-26 15:36:03 +0100430 select ARCH_REQUIRE_GPIOLIB
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000431 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100432 Support for Intel's 80219 and IOP32X (XScale) family of
433 processors.
434
435config ARCH_IOP33X
436 bool "IOP33x-based"
437 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000438 select CPU_XSCALE
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100439 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100440 select PCI
Russell Kingbb2b1802008-07-26 15:36:03 +0100441 select ARCH_REQUIRE_GPIOLIB
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100442 help
443 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444
Russell King3b938be2007-05-12 11:25:44 +0100445config ARCH_IXP23XX
446 bool "IXP23XX-based"
Dan Williams588ef762007-02-13 17:12:04 +0100447 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000448 select CPU_XSC3
Russell King3b938be2007-05-12 11:25:44 +0100449 select PCI
John Stultz5cfc8ee2010-03-24 00:22:36 +0000450 select ARCH_USES_GETTIMEOFFSET
Dan Williams285f5fa2006-12-07 02:59:39 +0100451 help
Russell King3b938be2007-05-12 11:25:44 +0100452 Support for Intel's IXP23xx (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453
454config ARCH_IXP2000
455 bool "IXP2400/2800-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100456 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000457 select CPU_XSCALE
Russell Kingf7e68bb2005-05-05 14:49:01 +0100458 select PCI
John Stultz5cfc8ee2010-03-24 00:22:36 +0000459 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000460 help
461 Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462
Russell King3b938be2007-05-12 11:25:44 +0100463config ARCH_IXP4XX
464 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100465 depends on MMU
Russell King234b6ced2011-05-08 14:09:47 +0100466 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000467 select CPU_XSCALE
Milan Svoboda8858e9a2007-05-14 07:50:42 +0100468 select GENERIC_GPIO
Russell King3b938be2007-05-12 11:25:44 +0100469 select GENERIC_CLOCKEVENTS
Russell King5b0d4952010-12-15 21:23:13 +0000470 select HAVE_SCHED_CLOCK
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100471 select MIGHT_HAVE_PCI
Russell King485bdde2008-10-17 14:00:43 +0100472 select DMABOUNCE if PCI
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100473 help
Russell King3b938be2007-05-12 11:25:44 +0100474 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100475
Saeed Bisharaedabd382009-08-06 15:12:43 +0300476config ARCH_DOVE
477 bool "Marvell Dove"
Konstantin Porotchkin7b769bb2011-04-07 13:49:41 +0300478 select CPU_V7
Saeed Bisharaedabd382009-08-06 15:12:43 +0300479 select PCI
Saeed Bisharaedabd382009-08-06 15:12:43 +0300480 select ARCH_REQUIRE_GPIOLIB
Saeed Bisharaedabd382009-08-06 15:12:43 +0300481 select GENERIC_CLOCKEVENTS
482 select PLAT_ORION
483 help
484 Support for the Marvell Dove SoC 88AP510
485
Saeed Bishara651c74c2008-06-22 22:45:06 +0200486config ARCH_KIRKWOOD
487 bool "Marvell Kirkwood"
Russell Kingc7508152008-10-26 10:55:14 +0000488 select CPU_FEROCEON
Saeed Bishara651c74c2008-06-22 22:45:06 +0200489 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700490 select ARCH_REQUIRE_GPIOLIB
Saeed Bishara651c74c2008-06-22 22:45:06 +0200491 select GENERIC_CLOCKEVENTS
492 select PLAT_ORION
493 help
494 Support for the following Marvell Kirkwood series SoCs:
495 88F6180, 88F6192 and 88F6281.
496
Russell King788c9702009-04-26 14:21:59 +0100497config ARCH_LOKI
498 bool "Marvell Loki (88RC8480)"
499 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100500 select GENERIC_CLOCKEVENTS
501 select PLAT_ORION
502 help
503 Support for the Marvell Loki (88RC8480) SoC.
504
Kevin Wells40805942010-07-27 08:49:04 -0700505config ARCH_LPC32XX
506 bool "NXP LPC32XX"
Russell King234b6ced2011-05-08 14:09:47 +0100507 select CLKSRC_MMIO
Kevin Wells40805942010-07-27 08:49:04 -0700508 select CPU_ARM926T
509 select ARCH_REQUIRE_GPIOLIB
510 select HAVE_IDE
511 select ARM_AMBA
512 select USB_ARCH_HAS_OHCI
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100513 select CLKDEV_LOOKUP
Kevin Wells40805942010-07-27 08:49:04 -0700514 select GENERIC_TIME
515 select GENERIC_CLOCKEVENTS
516 help
517 Support for the NXP LPC32XX family of processors
518
Russell King788c9702009-04-26 14:21:59 +0100519config ARCH_MV78XX0
520 bool "Marvell MV78xx0"
521 select CPU_FEROCEON
522 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700523 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100524 select GENERIC_CLOCKEVENTS
525 select PLAT_ORION
526 help
527 Support for the following Marvell MV78xx0 series SoCs:
528 MV781x0, MV782x0.
529
530config ARCH_ORION5X
531 bool "Marvell Orion"
532 depends on MMU
533 select CPU_FEROCEON
534 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700535 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100536 select GENERIC_CLOCKEVENTS
537 select PLAT_ORION
538 help
539 Support for the following Marvell Orion 5x series SoCs:
540 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
541 Orion-2 (5281), Orion-1-90 (6183).
542
543config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500544 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100545 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100546 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100547 select CLKDEV_LOOKUP
Russell King788c9702009-04-26 14:21:59 +0100548 select GENERIC_CLOCKEVENTS
Russell King28bb7bc2010-12-15 21:46:48 +0000549 select HAVE_SCHED_CLOCK
Russell King788c9702009-04-26 14:21:59 +0100550 select TICK_ONESHOT
551 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400552 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100553 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500554 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100555
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100556config ARCH_KS8695
557 bool "Micrel/Kendin KS8695"
Russell Kingc7508152008-10-26 10:55:14 +0000558 select CPU_ARM922T
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100559 select ARCH_REQUIRE_GPIOLIB
John Stultz5cfc8ee2010-03-24 00:22:36 +0000560 select ARCH_USES_GETTIMEOFFSET
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100561 help
562 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
563 System-on-Chip devices.
564
Russell King788c9702009-04-26 14:21:59 +0100565config ARCH_W90X900
566 bool "Nuvoton W90X900 CPU"
567 select CPU_ARM926T
wanzongshunc52d3d62009-06-10 15:49:32 +0100568 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100569 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100570 select CLKSRC_MMIO
wanzongshun58b53692009-08-14 15:36:44 +0100571 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200572 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100573 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
574 At present, the w90x900 has been renamed nuc900, regarding
575 the ARM series product line, you can login the following
576 link address to know more.
577
578 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
579 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400580
wanzongshuna62e9032009-12-31 15:06:05 +0100581config ARCH_NUC93X
582 bool "Nuvoton NUC93X CPU"
583 select CPU_ARM926T
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100584 select CLKDEV_LOOKUP
wanzongshuna62e9032009-12-31 15:06:05 +0100585 help
586 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
587 low-power and high performance MPEG-4/JPEG multimedia controller chip.
588
Erik Gillingc5f80062010-01-21 16:53:02 -0800589config ARCH_TEGRA
590 bool "NVIDIA Tegra"
Russell King40737232011-01-06 22:32:52 +0000591 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100592 select CLKSRC_MMIO
Erik Gillingc5f80062010-01-21 16:53:02 -0800593 select GENERIC_TIME
594 select GENERIC_CLOCKEVENTS
595 select GENERIC_GPIO
596 select HAVE_CLK
Russell Kinge3f4c0a2010-12-15 21:49:42 +0000597 select HAVE_SCHED_CLOCK
Erik Gillingc5f80062010-01-21 16:53:02 -0800598 select ARCH_HAS_BARRIERS if CACHE_L2X0
Colin Cross7056d422010-04-22 20:30:13 -0700599 select ARCH_HAS_CPUFREQ
Erik Gillingc5f80062010-01-21 16:53:02 -0800600 help
601 This enables support for NVIDIA Tegra based systems (Tegra APX,
602 Tegra 6xx and Tegra 2 series).
603
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100604config ARCH_PNX4008
605 bool "Philips Nexperia PNX4008 Mobile"
Russell Kingc7508152008-10-26 10:55:14 +0000606 select CPU_ARM926T
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100607 select CLKDEV_LOOKUP
John Stultz5cfc8ee2010-03-24 00:22:36 +0000608 select ARCH_USES_GETTIMEOFFSET
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100609 help
610 This enables support for Philips PNX4008 mobile platform.
611
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700613 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100614 depends on MMU
Al Viro034d2f52005-12-19 16:27:59 -0500615 select ARCH_MTD_XIP
Ben Dooks89c52ed2009-07-30 23:23:24 +0100616 select ARCH_HAS_CPUFREQ
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100617 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100618 select CLKSRC_MMIO
Michael Buesch7444a722008-07-25 01:46:11 -0700619 select ARCH_REQUIRE_GPIOLIB
Eric Miao981d0f32007-07-24 01:22:43 +0100620 select GENERIC_CLOCKEVENTS
Russell King7ce83012010-12-15 21:48:15 +0000621 select HAVE_SCHED_CLOCK
Russell Kinga88264c2007-11-12 22:45:16 +0000622 select TICK_ONESHOT
Eric Miaobd5ce432009-01-20 12:06:01 +0800623 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800624 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000625 help
eric miao2c8086a2007-09-11 19:13:17 -0700626 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700627
Russell King788c9702009-04-26 14:21:59 +0100628config ARCH_MSM
629 bool "Qualcomm MSM"
Steve Muckle4b536b82008-12-29 16:17:22 -0500630 select HAVE_CLK
Eric Miao49cbe782009-01-20 14:15:18 +0800631 select GENERIC_CLOCKEVENTS
Pavel Machek923a0812010-06-02 11:11:12 -0700632 select ARCH_REQUIRE_GPIOLIB
Stephen Boydbd323442011-02-23 09:37:42 -0800633 select CLKDEV_LOOKUP
Eric Miao49cbe782009-01-20 14:15:18 +0800634 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800635 Support for Qualcomm MSM/QSD based systems. This runs on the
636 apps processor of the MSM/QSD and depends on a shared memory
637 interface to the modem processor which runs the baseband
638 stack and controls some vital subsystems
639 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800640
Magnus Dammc793c1b2010-02-05 11:14:49 +0000641config ARCH_SHMOBILE
Paul Mundt6d72ad32010-11-16 16:10:20 +0900642 bool "Renesas SH-Mobile / R-Mobile"
643 select HAVE_CLK
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900644 select CLKDEV_LOOKUP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900645 select HAVE_MACH_CLKDEV
Paul Mundt6d72ad32010-11-16 16:10:20 +0900646 select GENERIC_CLOCKEVENTS
647 select NO_IOPORT
648 select SPARSE_IRQ
Magnus Damm60f14352010-12-28 08:26:52 +0000649 select MULTI_IRQ_HANDLER
Magnus Dammc793c1b2010-02-05 11:14:49 +0000650 help
Paul Mundt6d72ad32010-11-16 16:10:20 +0900651 Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000652
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653config ARCH_RPC
654 bool "RiscPC"
655 select ARCH_ACORN
656 select FIQ
657 select TIMER_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100658 select ARCH_MAY_HAVE_PC_FDC
Ben Dooks341eb782008-07-01 14:16:49 +0100659 select HAVE_PATA_PLATFORM
Russell King065909b2006-01-04 15:44:16 +0000660 select ISA_DMA_API
Al Viro5ea81762007-02-11 15:41:31 +0000661 select NO_IOPORT
Russell King07f841b2008-10-01 17:11:06 +0100662 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000663 select ARCH_USES_GETTIMEOFFSET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664 help
665 On the Acorn Risc-PC, Linux can support the internal IDE disk and
666 CD-ROM interface, serial and parallel port, and the floppy drive.
667
668config ARCH_SA1100
669 bool "SA1100-based"
Russell King234b6ced2011-05-08 14:09:47 +0100670 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000671 select CPU_SA1100
Russell Kingf7e68bb2005-05-05 14:49:01 +0100672 select ISA
Russell King05944d72006-11-30 20:43:51 +0000673 select ARCH_SPARSEMEM_ENABLE
Al Viro034d2f52005-12-19 16:27:59 -0500674 select ARCH_MTD_XIP
Ben Dooks89c52ed2009-07-30 23:23:24 +0100675 select ARCH_HAS_CPUFREQ
Russell King1937f5b2009-12-12 16:20:57 +0000676 select CPU_FREQ
Russell King3e238be2008-04-14 23:03:10 +0100677 select GENERIC_CLOCKEVENTS
David Brownell9483a572008-07-23 21:26:48 -0700678 select HAVE_CLK
Russell King5094b922010-12-15 21:49:06 +0000679 select HAVE_SCHED_CLOCK
Russell King3e238be2008-04-14 23:03:10 +0100680 select TICK_ONESHOT
Michael Buesch7444a722008-07-25 01:46:11 -0700681 select ARCH_REQUIRE_GPIOLIB
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000682 help
683 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684
685config ARCH_S3C2410
Ben Dooks63b1f512010-04-30 16:32:26 +0900686 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
David Brownell0a938b92007-03-05 00:30:18 -0800687 select GENERIC_GPIO
Ben Dooks9d56c022009-07-30 23:23:25 +0100688 select ARCH_HAS_CPUFREQ
David Brownell9483a572008-07-23 21:26:48 -0700689 select HAVE_CLK
John Stultz5cfc8ee2010-03-24 00:22:36 +0000690 select ARCH_USES_GETTIMEOFFSET
Kukjin Kim20676c12010-11-13 16:08:32 +0900691 select HAVE_S3C2410_I2C if I2C
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692 help
693 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
694 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000695 the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696
Ben Dooks63b1f512010-04-30 16:32:26 +0900697 Note, the S3C2416 and the S3C2450 are so close that they even share
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300698 the same SoC ID code. This means that there is no separate machine
Ben Dooks63b1f512010-04-30 16:32:26 +0900699 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
700
Ben Dooksa08ab632008-10-21 14:06:39 +0100701config ARCH_S3C64XX
702 bool "Samsung S3C64XX"
Ben Dooks89f1fa02010-01-29 09:02:17 +0000703 select PLAT_SAMSUNG
Ben Dooks89f0ce72010-01-26 15:49:15 +0900704 select CPU_V6
Ben Dooks89f0ce72010-01-26 15:49:15 +0900705 select ARM_VIC
Ben Dooksa08ab632008-10-21 14:06:39 +0100706 select HAVE_CLK
Ben Dooks89f0ce72010-01-26 15:49:15 +0900707 select NO_IOPORT
John Stultz5cfc8ee2010-03-24 00:22:36 +0000708 select ARCH_USES_GETTIMEOFFSET
Ben Dooks89c52ed2009-07-30 23:23:24 +0100709 select ARCH_HAS_CPUFREQ
Ben Dooks89f0ce72010-01-26 15:49:15 +0900710 select ARCH_REQUIRE_GPIOLIB
711 select SAMSUNG_CLKSRC
712 select SAMSUNG_IRQ_VIC_TIMER
713 select SAMSUNG_IRQ_UART
714 select S3C_GPIO_TRACK
715 select S3C_GPIO_PULL_UPDOWN
716 select S3C_GPIO_CFG_S3C24XX
717 select S3C_GPIO_CFG_S3C64XX
718 select S3C_DEV_NAND
719 select USB_ARCH_HAS_OHCI
720 select SAMSUNG_GPIOLIB_4BIT
Kukjin Kim20676c12010-11-13 16:08:32 +0900721 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900722 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Ben Dooksa08ab632008-10-21 14:06:39 +0100723 help
724 Samsung S3C64XX series based systems
725
Kukjin Kim49b7a492010-09-07 15:47:18 +0900726config ARCH_S5P64X0
727 bool "Samsung S5P6440 S5P6450"
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900728 select CPU_V6
729 select GENERIC_GPIO
730 select HAVE_CLK
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900731 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Sangbeom Kim9e65bbf2011-03-12 08:05:19 +0900732 select GENERIC_CLOCKEVENTS
733 select HAVE_SCHED_CLOCK
Kukjin Kim20676c12010-11-13 16:08:32 +0900734 select HAVE_S3C2410_I2C if I2C
Kukjin Kim754961a2010-11-13 16:11:46 +0900735 select HAVE_S3C_RTC if RTC_CLASS
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900736 help
Kukjin Kim49b7a492010-09-07 15:47:18 +0900737 Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
738 SMDK6450.
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900739
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200740config ARCH_S5PC100
741 bool "Samsung S5PC100"
Byungho Min5a7652f2009-06-23 21:39:42 +0900742 select GENERIC_GPIO
743 select HAVE_CLK
744 select CPU_V7
Kukjin Kimd6d502f2010-02-22 00:02:59 +0100745 select ARM_L1_CACHE_SHIFT_6
Ben Dooks925c68c2010-05-20 20:48:28 +0900746 select ARCH_USES_GETTIMEOFFSET
Kukjin Kim20676c12010-11-13 16:08:32 +0900747 select HAVE_S3C2410_I2C if I2C
Kukjin Kim754961a2010-11-13 16:11:46 +0900748 select HAVE_S3C_RTC if RTC_CLASS
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900749 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Byungho Min5a7652f2009-06-23 21:39:42 +0900750 help
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200751 Samsung S5PC100 series based systems
Byungho Min5a7652f2009-06-23 21:39:42 +0900752
Kukjin Kim170f4e42010-02-24 16:40:44 +0900753config ARCH_S5PV210
754 bool "Samsung S5PV210/S5PC110"
755 select CPU_V7
Kyungmin Parkeecb6a82010-09-29 21:29:27 +0900756 select ARCH_SPARSEMEM_ENABLE
Kukjin Kim170f4e42010-02-24 16:40:44 +0900757 select GENERIC_GPIO
758 select HAVE_CLK
759 select ARM_L1_CACHE_SHIFT_6
Jaecheol Leed8144ae2010-10-12 09:23:19 +0900760 select ARCH_HAS_CPUFREQ
Sangbeom Kim9e65bbf2011-03-12 08:05:19 +0900761 select GENERIC_CLOCKEVENTS
762 select HAVE_SCHED_CLOCK
Kukjin Kim20676c12010-11-13 16:08:32 +0900763 select HAVE_S3C2410_I2C if I2C
Kukjin Kim754961a2010-11-13 16:11:46 +0900764 select HAVE_S3C_RTC if RTC_CLASS
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900765 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Kukjin Kim170f4e42010-02-24 16:40:44 +0900766 help
767 Samsung S5PV210/S5PC110 series based systems
768
Kukjin Kim10606aa2011-02-14 15:05:27 +0900769config ARCH_EXYNOS4
770 bool "Samsung EXYNOS4"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900771 select CPU_V7
Kyungmin Parkf567fa62010-09-29 21:33:29 +0900772 select ARCH_SPARSEMEM_ENABLE
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900773 select GENERIC_GPIO
774 select HAVE_CLK
Sunyoung Kangb333fb12010-09-16 11:11:45 +0900775 select ARCH_HAS_CPUFREQ
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900776 select GENERIC_CLOCKEVENTS
Kukjin Kim754961a2010-11-13 16:11:46 +0900777 select HAVE_S3C_RTC if RTC_CLASS
Kukjin Kim20676c12010-11-13 16:08:32 +0900778 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900779 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900780 help
Kukjin Kim10606aa2011-02-14 15:05:27 +0900781 Samsung EXYNOS4 series based systems
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900782
Linus Torvalds1da177e2005-04-16 15:20:36 -0700783config ARCH_SHARK
784 bool "Shark"
Russell Kingc7508152008-10-26 10:55:14 +0000785 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100786 select ISA
787 select ISA_DMA
Nicolas Pitre3bca1032008-10-07 20:14:55 +0100788 select ZONE_DMA
Russell Kingf7e68bb2005-05-05 14:49:01 +0100789 select PCI
John Stultz5cfc8ee2010-03-24 00:22:36 +0000790 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000791 help
792 Support for the StrongARM based Digital DNARD machine, also known
793 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794
Hans J. Koch83ef3332010-09-17 18:13:56 +0200795config ARCH_TCC_926
796 bool "Telechips TCC ARM926-based systems"
Russell King234b6ced2011-05-08 14:09:47 +0100797 select CLKSRC_MMIO
Hans J. Koch83ef3332010-09-17 18:13:56 +0200798 select CPU_ARM926T
799 select HAVE_CLK
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100800 select CLKDEV_LOOKUP
Hans J. Koch83ef3332010-09-17 18:13:56 +0200801 select GENERIC_CLOCKEVENTS
802 help
803 Support for Telechips TCC ARM926-based systems.
804
Linus Walleijd98aac72009-04-27 10:21:46 +0100805config ARCH_U300
806 bool "ST-Ericsson U300 Series"
807 depends on MMU
Russell King234b6ced2011-05-08 14:09:47 +0100808 select CLKSRC_MMIO
Linus Walleijd98aac72009-04-27 10:21:46 +0100809 select CPU_ARM926T
Russell King5c21b7c2010-12-15 21:50:14 +0000810 select HAVE_SCHED_CLOCK
Linus Walleijbc581772009-09-15 17:30:37 +0100811 select HAVE_TCM
Linus Walleijd98aac72009-04-27 10:21:46 +0100812 select ARM_AMBA
813 select ARM_VIC
Linus Walleijd98aac72009-04-27 10:21:46 +0100814 select GENERIC_CLOCKEVENTS
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100815 select CLKDEV_LOOKUP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900816 select HAVE_MACH_CLKDEV
Linus Walleijd98aac72009-04-27 10:21:46 +0100817 select GENERIC_GPIO
818 help
819 Support for ST-Ericsson U300 series mobile platforms.
820
Russell Kingccf50e22010-03-15 19:03:06 +0000821config ARCH_U8500
822 bool "ST-Ericsson U8500 Series"
823 select CPU_V7
824 select ARM_AMBA
Russell Kingccf50e22010-03-15 19:03:06 +0000825 select GENERIC_CLOCKEVENTS
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100826 select CLKDEV_LOOKUP
Rabin Vincent94bdc0e2010-03-03 04:54:37 +0100827 select ARCH_REQUIRE_GPIOLIB
Martin Persson7c1a70e2010-12-08 15:13:42 +0100828 select ARCH_HAS_CPUFREQ
Russell Kingccf50e22010-03-15 19:03:06 +0000829 help
830 Support for ST-Ericsson's Ux500 architecture
831
832config ARCH_NOMADIK
833 bool "STMicroelectronics Nomadik"
834 select ARM_AMBA
835 select ARM_VIC
836 select CPU_ARM926T
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100837 select CLKDEV_LOOKUP
Russell Kingccf50e22010-03-15 19:03:06 +0000838 select GENERIC_CLOCKEVENTS
Russell Kingccf50e22010-03-15 19:03:06 +0000839 select ARCH_REQUIRE_GPIOLIB
840 help
841 Support for the Nomadik platform by ST-Ericsson
842
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100843config ARCH_DAVINCI
844 bool "TI DaVinci"
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100845 select GENERIC_CLOCKEVENTS
David Brownelldce11152008-09-07 23:41:04 -0700846 select ARCH_REQUIRE_GPIOLIB
Nicolas Pitre3bca1032008-10-07 20:14:55 +0100847 select ZONE_DMA
Kevin Hilman9232fcc2009-04-08 14:49:38 -0700848 select HAVE_IDE
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100849 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700850 select GENERIC_ALLOCATOR
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100851 select GENERIC_IRQ_CHIP
Sekhar Noriae88e052009-11-19 15:34:01 +0530852 select ARCH_HAS_HOLES_MEMORYMODEL
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100853 help
854 Support for TI's DaVinci platform.
855
Russell King3b938be2007-05-12 11:25:44 +0100856config ARCH_OMAP
857 bool "TI OMAP"
David Brownell9483a572008-07-23 21:26:48 -0700858 select HAVE_CLK
Michael Buesch7444a722008-07-25 01:46:11 -0700859 select ARCH_REQUIRE_GPIOLIB
Ben Dooks89c52ed2009-07-30 23:23:24 +0100860 select ARCH_HAS_CPUFREQ
Kevin Hilman06cad092007-10-18 23:04:43 -0700861 select GENERIC_CLOCKEVENTS
Russell Kingdc548fb2010-12-15 21:53:51 +0000862 select HAVE_SCHED_CLOCK
Sriram9af915d2010-01-29 14:20:05 -0800863 select ARCH_HAS_HOLES_MEMORYMODEL
Russell King3b938be2007-05-12 11:25:44 +0100864 help
Lennert Buytenhek6e457bb2010-09-22 20:40:57 +0200865 Support for TI's OMAP platform (OMAP1/2/3/4).
Russell King3b938be2007-05-12 11:25:44 +0100866
viresh kumarcee37e52010-04-01 12:31:05 +0100867config PLAT_SPEAR
868 bool "ST SPEAr"
869 select ARM_AMBA
870 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100871 select CLKDEV_LOOKUP
Russell Kingd6e15d72011-05-08 17:10:14 +0100872 select CLKSRC_MMIO
viresh kumarcee37e52010-04-01 12:31:05 +0100873 select GENERIC_CLOCKEVENTS
viresh kumarcee37e52010-04-01 12:31:05 +0100874 select HAVE_CLK
875 help
876 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
877
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100878config ARCH_VT8500
879 bool "VIA/WonderMedia 85xx"
880 select CPU_ARM926T
881 select GENERIC_GPIO
882 select ARCH_HAS_CPUFREQ
883 select GENERIC_CLOCKEVENTS
884 select ARCH_REQUIRE_GPIOLIB
885 select HAVE_PWM
886 help
887 Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888endchoice
889
Russell Kingccf50e22010-03-15 19:03:06 +0000890#
891# This is sorted alphabetically by mach-* pathname. However, plat-*
892# Kconfigs may be included either alphabetically (according to the
893# plat- suffix) or along side the corresponding mach-* source.
894#
Russell King95b8f202010-01-14 11:43:54 +0000895source "arch/arm/mach-at91/Kconfig"
896
897source "arch/arm/mach-bcmring/Kconfig"
898
Linus Torvalds1da177e2005-04-16 15:20:36 -0700899source "arch/arm/mach-clps711x/Kconfig"
900
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300901source "arch/arm/mach-cns3xxx/Kconfig"
902
Russell King95b8f202010-01-14 11:43:54 +0000903source "arch/arm/mach-davinci/Kconfig"
904
905source "arch/arm/mach-dove/Kconfig"
906
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000907source "arch/arm/mach-ep93xx/Kconfig"
908
Linus Torvalds1da177e2005-04-16 15:20:36 -0700909source "arch/arm/mach-footbridge/Kconfig"
910
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200911source "arch/arm/mach-gemini/Kconfig"
912
Russell King95b8f202010-01-14 11:43:54 +0000913source "arch/arm/mach-h720x/Kconfig"
914
Linus Torvalds1da177e2005-04-16 15:20:36 -0700915source "arch/arm/mach-integrator/Kconfig"
916
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100917source "arch/arm/mach-iop32x/Kconfig"
918
919source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920
Dan Williams285f5fa2006-12-07 02:59:39 +0100921source "arch/arm/mach-iop13xx/Kconfig"
922
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923source "arch/arm/mach-ixp4xx/Kconfig"
924
925source "arch/arm/mach-ixp2000/Kconfig"
926
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100927source "arch/arm/mach-ixp23xx/Kconfig"
928
Russell King95b8f202010-01-14 11:43:54 +0000929source "arch/arm/mach-kirkwood/Kconfig"
930
931source "arch/arm/mach-ks8695/Kconfig"
932
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200933source "arch/arm/mach-loki/Kconfig"
934
Kevin Wells40805942010-07-27 08:49:04 -0700935source "arch/arm/mach-lpc32xx/Kconfig"
936
Russell King95b8f202010-01-14 11:43:54 +0000937source "arch/arm/mach-msm/Kconfig"
938
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200939source "arch/arm/mach-mv78xx0/Kconfig"
940
Russell King95b8f202010-01-14 11:43:54 +0000941source "arch/arm/plat-mxc/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700942
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800943source "arch/arm/mach-mxs/Kconfig"
944
Russell King95b8f202010-01-14 11:43:54 +0000945source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800946
Russell King95b8f202010-01-14 11:43:54 +0000947source "arch/arm/mach-nomadik/Kconfig"
948source "arch/arm/plat-nomadik/Kconfig"
949
Russell Kingd91a89102010-02-04 18:13:17 +0000950source "arch/arm/mach-nuc93x/Kconfig"
951
Tony Lindgrend48af152005-07-10 19:58:17 +0100952source "arch/arm/plat-omap/Kconfig"
953
954source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700955
Tony Lindgren1dbae812005-11-10 14:26:51 +0000956source "arch/arm/mach-omap2/Kconfig"
957
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400958source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400959
Russell King95b8f202010-01-14 11:43:54 +0000960source "arch/arm/mach-pxa/Kconfig"
961source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700962
Russell King95b8f202010-01-14 11:43:54 +0000963source "arch/arm/mach-mmp/Kconfig"
964
965source "arch/arm/mach-realview/Kconfig"
966
967source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300968
Ben Dookscf383672009-11-10 00:14:58 +0000969source "arch/arm/plat-samsung/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100970source "arch/arm/plat-s3c24xx/Kconfig"
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900971source "arch/arm/plat-s5p/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100972
viresh kumarcee37e52010-04-01 12:31:05 +0100973source "arch/arm/plat-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100974
Hans J. Koch83ef3332010-09-17 18:13:56 +0200975source "arch/arm/plat-tcc/Kconfig"
976
Ben Dooksa21765a2007-02-11 18:31:01 +0100977if ARCH_S3C2410
978source "arch/arm/mach-s3c2400/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700979source "arch/arm/mach-s3c2410/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100980source "arch/arm/mach-s3c2412/Kconfig"
Yauhen Kharuzhyf1290a42010-04-28 18:09:01 +0900981source "arch/arm/mach-s3c2416/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100982source "arch/arm/mach-s3c2440/Kconfig"
Ben Dookse4d06e32007-02-16 12:12:31 +0100983source "arch/arm/mach-s3c2443/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100984endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700985
Ben Dooksa08ab632008-10-21 14:06:39 +0100986if ARCH_S3C64XX
Ben Dooks431107e2010-01-26 10:11:04 +0900987source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100988endif
989
Kukjin Kim49b7a492010-09-07 15:47:18 +0900990source "arch/arm/mach-s5p64x0/Kconfig"
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900991
Byungho Min5a7652f2009-06-23 21:39:42 +0900992source "arch/arm/mach-s5pc100/Kconfig"
Byungho Min5a7652f2009-06-23 21:39:42 +0900993
Kukjin Kim170f4e42010-02-24 16:40:44 +0900994source "arch/arm/mach-s5pv210/Kconfig"
995
Kukjin Kim10606aa2011-02-14 15:05:27 +0900996source "arch/arm/mach-exynos4/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900997
Russell King882d01f2010-03-02 23:40:15 +0000998source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999
Erik Gillingc5f80062010-01-21 16:53:02 -08001000source "arch/arm/mach-tegra/Kconfig"
1001
Russell King95b8f202010-01-14 11:43:54 +00001002source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001003
Russell King95b8f202010-01-14 11:43:54 +00001004source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001005
1006source "arch/arm/mach-versatile/Kconfig"
1007
Russell Kingceade892010-02-11 21:44:53 +00001008source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +00001009source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +00001010
Alexey Charkov21f47fb2010-12-23 13:11:21 +01001011source "arch/arm/mach-vt8500/Kconfig"
1012
wanzongshun7ec80dd2008-12-03 03:55:38 +01001013source "arch/arm/mach-w90x900/Kconfig"
1014
Linus Torvalds1da177e2005-04-16 15:20:36 -07001015# Definitions to make life easier
1016config ARCH_ACORN
1017 bool
1018
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +01001019config PLAT_IOP
1020 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -07001021 select GENERIC_CLOCKEVENTS
Russell King08f26b12010-12-15 21:52:10 +00001022 select HAVE_SCHED_CLOCK
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +01001023
Lennert Buytenhek69b02f62008-03-27 14:51:39 -04001024config PLAT_ORION
1025 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001026 select CLKSRC_MMIO
Russell Kingdc7ad3b2011-05-22 10:01:21 +01001027 select GENERIC_IRQ_CHIP
Russell Kingf06a1622010-12-15 21:55:06 +00001028 select HAVE_SCHED_CLOCK
Lennert Buytenhek69b02f62008-03-27 14:51:39 -04001029
Eric Miaobd5ce432009-01-20 12:06:01 +08001030config PLAT_PXA
1031 bool
1032
Russell Kingf4b8b312010-01-14 12:48:06 +00001033config PLAT_VERSATILE
1034 bool
1035
Russell Kinge3887712010-01-14 13:30:16 +00001036config ARM_TIMER_SP804
1037 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001038 select CLKSRC_MMIO
Russell Kinge3887712010-01-14 13:30:16 +00001039
Linus Torvalds1da177e2005-04-16 15:20:36 -07001040source arch/arm/mm/Kconfig
1041
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001042config IWMMXT
1043 bool "Enable iWMMXt support"
Haojian Zhuangef6c8442010-11-24 11:54:25 +08001044 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
1045 default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001046 help
1047 Enable support for iWMMXt context switching at run time if
1048 running on a CPU that supports it.
1049
Linus Torvalds1da177e2005-04-16 15:20:36 -07001050# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
1051config XSCALE_PMU
1052 bool
1053 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
1054 default y
1055
Jamie Iles0f4f0672010-02-02 20:23:15 +01001056config CPU_HAS_PMU
Russell Kinge399b1a2011-01-17 15:08:32 +00001057 depends on (CPU_V6 || CPU_V6K || CPU_V7 || XSCALE_PMU) && \
Will Deacon8954bb02010-06-21 15:32:54 +01001058 (!ARCH_OMAP3 || OMAP3_EMU)
Jamie Iles0f4f0672010-02-02 20:23:15 +01001059 default y
1060 bool
1061
eric miao52108642010-12-13 09:42:34 +01001062config MULTI_IRQ_HANDLER
1063 bool
1064 help
1065 Allow each machine to specify it's own IRQ handler at run time.
1066
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001067if !MMU
1068source "arch/arm/Kconfig-nommu"
1069endif
1070
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001071config ARM_ERRATA_411920
1072 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001073 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001074 help
1075 Invalidation of the Instruction Cache operation can
1076 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1077 It does not affect the MPCore. This option enables the ARM Ltd.
1078 recommended workaround.
1079
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001080config ARM_ERRATA_430973
1081 bool "ARM errata: Stale prediction on replaced interworking branch"
1082 depends on CPU_V7
1083 help
1084 This option enables the workaround for the 430973 Cortex-A8
1085 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1086 interworking branch is replaced with another code sequence at the
1087 same virtual address, whether due to self-modifying code or virtual
1088 to physical address re-mapping, Cortex-A8 does not recover from the
1089 stale interworking branch prediction. This results in Cortex-A8
1090 executing the new code sequence in the incorrect ARM or Thumb state.
1091 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1092 and also flushes the branch target cache at every context switch.
1093 Note that setting specific bits in the ACTLR register may not be
1094 available in non-secure mode.
1095
Catalin Marinas855c5512009-04-30 17:06:15 +01001096config ARM_ERRATA_458693
1097 bool "ARM errata: Processor deadlock when a false hazard is created"
1098 depends on CPU_V7
1099 help
1100 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1101 erratum. For very specific sequences of memory operations, it is
1102 possible for a hazard condition intended for a cache line to instead
1103 be incorrectly associated with a different cache line. This false
1104 hazard might then cause a processor deadlock. The workaround enables
1105 the L1 caching of the NEON accesses and disables the PLD instruction
1106 in the ACTLR register. Note that setting specific bits in the ACTLR
1107 register may not be available in non-secure mode.
1108
Catalin Marinas0516e462009-04-30 17:06:20 +01001109config ARM_ERRATA_460075
1110 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1111 depends on CPU_V7
1112 help
1113 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1114 erratum. Any asynchronous access to the L2 cache may encounter a
1115 situation in which recent store transactions to the L2 cache are lost
1116 and overwritten with stale memory contents from external memory. The
1117 workaround disables the write-allocate mode for the L2 cache via the
1118 ACTLR register. Note that setting specific bits in the ACTLR register
1119 may not be available in non-secure mode.
1120
Will Deacon9f050272010-09-14 09:51:43 +01001121config ARM_ERRATA_742230
1122 bool "ARM errata: DMB operation may be faulty"
1123 depends on CPU_V7 && SMP
1124 help
1125 This option enables the workaround for the 742230 Cortex-A9
1126 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1127 between two write operations may not ensure the correct visibility
1128 ordering of the two writes. This workaround sets a specific bit in
1129 the diagnostic register of the Cortex-A9 which causes the DMB
1130 instruction to behave as a DSB, ensuring the correct behaviour of
1131 the two writes.
1132
Will Deacona672e992010-09-14 09:53:02 +01001133config ARM_ERRATA_742231
1134 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1135 depends on CPU_V7 && SMP
1136 help
1137 This option enables the workaround for the 742231 Cortex-A9
1138 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1139 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1140 accessing some data located in the same cache line, may get corrupted
1141 data due to bad handling of the address hazard when the line gets
1142 replaced from one of the CPUs at the same time as another CPU is
1143 accessing it. This workaround sets specific bits in the diagnostic
1144 register of the Cortex-A9 which reduces the linefill issuing
1145 capabilities of the processor.
1146
Santosh Shilimkar9e655822010-02-04 19:42:42 +01001147config PL310_ERRATA_588369
1148 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
Santosh Shilimkar2839e062011-03-08 06:59:54 +01001149 depends on CACHE_L2X0
Santosh Shilimkar9e655822010-02-04 19:42:42 +01001150 help
1151 The PL310 L2 cache controller implements three types of Clean &
1152 Invalidate maintenance operations: by Physical Address
1153 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1154 They are architecturally defined to behave as the execution of a
1155 clean operation followed immediately by an invalidate operation,
1156 both performing to the same memory location. This functionality
1157 is not correctly implemented in PL310 as clean lines are not
Santosh Shilimkar2839e062011-03-08 06:59:54 +01001158 invalidated as a result of these operations.
Will Deaconcdf357f2010-08-05 11:20:51 +01001159
1160config ARM_ERRATA_720789
1161 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1162 depends on CPU_V7 && SMP
1163 help
1164 This option enables the workaround for the 720789 Cortex-A9 (prior to
1165 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1166 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1167 As a consequence of this erratum, some TLB entries which should be
1168 invalidated are not, resulting in an incoherency in the system page
1169 tables. The workaround changes the TLB flushing routines to invalidate
1170 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001171
Russell King1f0090a2011-03-16 23:35:25 +00001172config PL310_ERRATA_727915
1173 bool "Background Clean & Invalidate by Way operation can cause data corruption"
1174 depends on CACHE_L2X0
1175 help
1176 PL310 implements the Clean & Invalidate by Way L2 cache maintenance
1177 operation (offset 0x7FC). This operation runs in background so that
1178 PL310 can handle normal accesses while it is in progress. Under very
1179 rare circumstances, due to this erratum, write data can be lost when
1180 PL310 treats a cacheable write transaction during a Clean &
1181 Invalidate by Way operation.
1182
Will Deacon475d92f2010-09-28 14:02:02 +01001183config ARM_ERRATA_743622
1184 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1185 depends on CPU_V7
1186 help
1187 This option enables the workaround for the 743622 Cortex-A9
1188 (r2p0..r2p2) erratum. Under very rare conditions, a faulty
1189 optimisation in the Cortex-A9 Store Buffer may lead to data
1190 corruption. This workaround sets a specific bit in the diagnostic
1191 register of the Cortex-A9 which disables the Store Buffer
1192 optimisation, preventing the defect from occurring. This has no
1193 visible impact on the overall performance or power consumption of the
1194 processor.
1195
Will Deacon9a27c272011-02-18 16:36:35 +01001196config ARM_ERRATA_751472
1197 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
1198 depends on CPU_V7 && SMP
1199 help
1200 This option enables the workaround for the 751472 Cortex-A9 (prior
1201 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1202 completion of a following broadcasted operation if the second
1203 operation is received by a CPU before the ICIALLUIS has completed,
1204 potentially leading to corrupted entries in the cache or TLB.
1205
Srinidhi Kasagar885028e2011-02-17 07:03:51 +01001206config ARM_ERRATA_753970
1207 bool "ARM errata: cache sync operation may be faulty"
1208 depends on CACHE_PL310
1209 help
1210 This option enables the workaround for the 753970 PL310 (r3p0) erratum.
1211
1212 Under some condition the effect of cache sync operation on
1213 the store buffer still remains when the operation completes.
1214 This means that the store buffer is always asked to drain and
1215 this prevents it from merging any further writes. The workaround
1216 is to replace the normal offset of cache sync operation (0x730)
1217 by another offset targeting an unmapped PL310 register 0x740.
1218 This has the same effect as the cache sync operation: store buffer
1219 drain and waiting for all buffers empty.
1220
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001221config ARM_ERRATA_754322
1222 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1223 depends on CPU_V7
1224 help
1225 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1226 r3p*) erratum. A speculative memory access may cause a page table walk
1227 which starts prior to an ASID switch but completes afterwards. This
1228 can populate the micro-TLB with a stale entry which may be hit with
1229 the new ASID. This workaround places two dsb instructions in the mm
1230 switching code so that no page table walks can cross the ASID switch.
1231
Will Deacon5dab26af2011-03-04 12:38:54 +01001232config ARM_ERRATA_754327
1233 bool "ARM errata: no automatic Store Buffer drain"
1234 depends on CPU_V7 && SMP
1235 help
1236 This option enables the workaround for the 754327 Cortex-A9 (prior to
1237 r2p0) erratum. The Store Buffer does not have any automatic draining
1238 mechanism and therefore a livelock may occur if an external agent
1239 continuously polls a memory location waiting to observe an update.
1240 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1241 written polling loops from denying visibility of updates to memory.
1242
Linus Torvalds1da177e2005-04-16 15:20:36 -07001243endmenu
1244
1245source "arch/arm/common/Kconfig"
1246
Linus Torvalds1da177e2005-04-16 15:20:36 -07001247menu "Bus support"
1248
1249config ARM_AMBA
1250 bool
1251
1252config ISA
1253 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001254 help
1255 Find out whether you have ISA slots on your motherboard. ISA is the
1256 name of a bus system, i.e. the way the CPU talks to the other stuff
1257 inside your box. Other bus systems are PCI, EISA, MicroChannel
1258 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1259 newer boards don't support it. If you have ISA, say Y, otherwise N.
1260
Russell King065909b2006-01-04 15:44:16 +00001261# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262config ISA_DMA
1263 bool
Russell King065909b2006-01-04 15:44:16 +00001264 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001265
Russell King065909b2006-01-04 15:44:16 +00001266# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001267config ISA_DMA_API
1268 bool
Al Viro5cae8412005-05-04 05:39:22 +01001269
Linus Torvalds1da177e2005-04-16 15:20:36 -07001270config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001271 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001272 help
1273 Find out whether you have a PCI motherboard. PCI is the name of a
1274 bus system, i.e. the way the CPU talks to the other stuff inside
1275 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1276 VESA. If you have PCI, say Y, otherwise N.
1277
Anton Vorontsov52882172010-04-19 13:20:49 +01001278config PCI_DOMAINS
1279 bool
1280 depends on PCI
1281
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001282config PCI_NANOENGINE
1283 bool "BSE nanoEngine PCI support"
1284 depends on SA1100_NANOENGINE
1285 help
1286 Enable PCI on the BSE nanoEngine board.
1287
Matthew Wilcox36e23592007-07-10 10:54:40 -06001288config PCI_SYSCALL
1289 def_bool PCI
1290
Linus Torvalds1da177e2005-04-16 15:20:36 -07001291# Select the host bridge type
1292config PCI_HOST_VIA82C505
1293 bool
1294 depends on PCI && ARCH_SHARK
1295 default y
1296
Mike Rapoporta0113a92007-11-25 08:55:34 +01001297config PCI_HOST_ITE8152
1298 bool
1299 depends on PCI && MACH_ARMCORE
1300 default y
1301 select DMABOUNCE
1302
Linus Torvalds1da177e2005-04-16 15:20:36 -07001303source "drivers/pci/Kconfig"
1304
1305source "drivers/pcmcia/Kconfig"
1306
1307endmenu
1308
1309menu "Kernel Features"
1310
Kevin Hilman0567a0c2007-03-13 20:29:24 +01001311source "kernel/time/Kconfig"
1312
Linus Torvalds1da177e2005-04-16 15:20:36 -07001313config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001314 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001315 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001316 depends on GENERIC_CLOCKEVENTS
Russell King971acb92010-09-04 08:16:30 +01001317 depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
Daniel Walker89c3ded2010-11-22 12:35:41 -08001318 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
Kukjin Kim10606aa2011-02-14 15:05:27 +09001319 ARCH_EXYNOS4 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
Paul Mundte9d728f2011-01-07 10:51:35 +09001320 ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE
Jens Axboef6dd9fa2008-06-10 20:48:30 +02001321 select USE_GENERIC_SMP_HELPERS
Daniel Walker89c3ded2010-11-22 12:35:41 -08001322 select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
Linus Torvalds1da177e2005-04-16 15:20:36 -07001323 help
1324 This enables support for systems with more than one CPU. If you have
1325 a system with only one CPU, like most personal computers, say N. If
1326 you have a system with more than one CPU, say Y.
1327
1328 If you say N here, the kernel will run on single and multiprocessor
1329 machines, but will use only one CPU of a multiprocessor machine. If
1330 you say Y here, the kernel will run on many, but not all, single
1331 processor machines. On a single processor machine, the kernel will
1332 run faster if you say N here.
1333
Adrian Bunk03502fa2008-02-03 15:50:21 +02001334 See also <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001335 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001336 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001337
1338 If you don't know what to do here, say N.
1339
Russell Kingf00ec482010-09-04 10:47:48 +01001340config SMP_ON_UP
1341 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
1342 depends on EXPERIMENTAL
Nicolas Pitre4d2692a2011-01-14 07:33:24 +01001343 depends on SMP && !XIP_KERNEL
Russell Kingf00ec482010-09-04 10:47:48 +01001344 default y
1345 help
1346 SMP kernels contain instructions which fail on non-SMP processors.
1347 Enabling this option allows the kernel to modify itself to make
1348 these instructions safe. Disabling it allows about 1K of space
1349 savings.
1350
1351 If you don't know what to do here, say Y.
1352
Russell Kinga8cbcd92009-05-16 11:51:14 +01001353config HAVE_ARM_SCU
1354 bool
1355 depends on SMP
1356 help
1357 This option enables support for the ARM system coherency unit
1358
Russell Kingf32f4ce2009-05-16 12:14:21 +01001359config HAVE_ARM_TWD
1360 bool
1361 depends on SMP
Russell King15095bb2011-01-02 15:05:21 +00001362 select TICK_ONESHOT
Russell Kingf32f4ce2009-05-16 12:14:21 +01001363 help
1364 This options enables support for the ARM timer and watchdog unit
1365
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001366choice
1367 prompt "Memory split"
1368 default VMSPLIT_3G
1369 help
1370 Select the desired split between kernel and user memory.
1371
1372 If you are not absolutely sure what you are doing, leave this
1373 option alone!
1374
1375 config VMSPLIT_3G
1376 bool "3G/1G user/kernel split"
1377 config VMSPLIT_2G
1378 bool "2G/2G user/kernel split"
1379 config VMSPLIT_1G
1380 bool "1G/3G user/kernel split"
1381endchoice
1382
1383config PAGE_OFFSET
1384 hex
1385 default 0x40000000 if VMSPLIT_1G
1386 default 0x80000000 if VMSPLIT_2G
1387 default 0xC0000000
1388
Linus Torvalds1da177e2005-04-16 15:20:36 -07001389config NR_CPUS
1390 int "Maximum number of CPUs (2-32)"
1391 range 2 32
1392 depends on SMP
1393 default "4"
1394
Russell Kinga054a812005-11-02 22:24:33 +00001395config HOTPLUG_CPU
1396 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1397 depends on SMP && HOTPLUG && EXPERIMENTAL
1398 help
1399 Say Y here to experiment with turning CPUs off and on. CPUs
1400 can be controlled through /sys/devices/system/cpu.
1401
Russell King37ee16a2005-11-08 19:08:05 +00001402config LOCAL_TIMERS
1403 bool "Use local timer interrupts"
Russell King971acb92010-09-04 08:16:30 +01001404 depends on SMP
Russell King37ee16a2005-11-08 19:08:05 +00001405 default y
Changhwan Youn30d8bea2011-03-11 10:39:57 +09001406 select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
Russell King37ee16a2005-11-08 19:08:05 +00001407 help
1408 Enable support for local timers on SMP platforms, rather then the
1409 legacy IPI broadcast method. Local timers allows the system
1410 accounting to be spread across the timer interval, preventing a
1411 "thundering herd" at every timer tick.
1412
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001413source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001414
Russell Kingf8065812006-03-02 22:41:59 +00001415config HZ
1416 int
Kukjin Kim49b7a492010-09-07 15:47:18 +09001417 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001418 ARCH_S5PV210 || ARCH_EXYNOS4
Russell Kingbfe65702006-03-04 11:01:53 +00001419 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
David Brownell5248c652007-11-12 17:59:10 +01001420 default AT91_TIMER_HZ if ARCH_AT91
Magnus Damm5da3e712010-07-29 14:03:04 +01001421 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
Russell Kingf8065812006-03-02 22:41:59 +00001422 default 100
1423
Catalin Marinas16c79652009-07-24 12:33:02 +01001424config THUMB2_KERNEL
Russell King4a50bfe2010-12-05 23:06:22 +00001425 bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
Russell Kinge399b1a2011-01-17 15:08:32 +00001426 depends on CPU_V7 && !CPU_V6 && !CPU_V6K && EXPERIMENTAL
Catalin Marinas16c79652009-07-24 12:33:02 +01001427 select AEABI
1428 select ARM_ASM_UNIFIED
1429 help
1430 By enabling this option, the kernel will be compiled in
1431 Thumb-2 mode. A compiler/assembler that understand the unified
1432 ARM-Thumb syntax is needed.
1433
1434 If unsure, say N.
1435
Dave Martin6f685c52011-03-03 11:41:12 +01001436config THUMB2_AVOID_R_ARM_THM_JUMP11
1437 bool "Work around buggy Thumb-2 short branch relocations in gas"
1438 depends on THUMB2_KERNEL && MODULES
1439 default y
1440 help
1441 Various binutils versions can resolve Thumb-2 branches to
1442 locally-defined, preemptible global symbols as short-range "b.n"
1443 branch instructions.
1444
1445 This is a problem, because there's no guarantee the final
1446 destination of the symbol, or any candidate locations for a
1447 trampoline, are within range of the branch. For this reason, the
1448 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1449 relocation in modules at all, and it makes little sense to add
1450 support.
1451
1452 The symptom is that the kernel fails with an "unsupported
1453 relocation" error when loading some modules.
1454
1455 Until fixed tools are available, passing
1456 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1457 code which hits this problem, at the cost of a bit of extra runtime
1458 stack usage in some cases.
1459
1460 The problem is described in more detail at:
1461 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1462
1463 Only Thumb-2 kernels are affected.
1464
1465 Unless you are sure your tools don't have this problem, say Y.
1466
Catalin Marinas0becb082009-07-24 12:32:53 +01001467config ARM_ASM_UNIFIED
1468 bool
1469
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001470config AEABI
1471 bool "Use the ARM EABI to compile the kernel"
1472 help
1473 This option allows for the kernel to be compiled using the latest
1474 ARM ABI (aka EABI). This is only useful if you are using a user
1475 space environment that is also compiled with EABI.
1476
1477 Since there are major incompatibilities between the legacy ABI and
1478 EABI, especially with regard to structure member alignment, this
1479 option also changes the kernel syscall calling convention to
1480 disambiguate both ABIs and allow for backward compatibility support
1481 (selected with CONFIG_OABI_COMPAT).
1482
1483 To use this you need GCC version 4.0.0 or later.
1484
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001485config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001486 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Dave Martin9bc433a2011-02-11 16:41:20 +01001487 depends on AEABI && EXPERIMENTAL && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001488 default y
1489 help
1490 This option preserves the old syscall interface along with the
1491 new (ARM EABI) one. It also provides a compatibility layer to
1492 intercept syscalls that have structure arguments which layout
1493 in memory differs between the legacy ABI and the new ARM EABI
1494 (only for non "thumb" binaries). This option adds a tiny
1495 overhead to all syscalls and produces a slightly larger kernel.
1496 If you know you'll be using only pure EABI user space then you
1497 can say N here. If this option is not selected and you attempt
1498 to execute a legacy ABI binary then the result will be
1499 UNPREDICTABLE (in fact it can be predicted that it won't work
1500 at all). If in doubt say Y.
1501
Mel Gormaneb335752009-05-13 17:34:48 +01001502config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001503 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001504
Russell King05944d72006-11-30 20:43:51 +00001505config ARCH_SPARSEMEM_ENABLE
1506 bool
1507
Russell King07a2f732008-10-01 21:39:58 +01001508config ARCH_SPARSEMEM_DEFAULT
1509 def_bool ARCH_SPARSEMEM_ENABLE
1510
Russell King05944d72006-11-30 20:43:51 +00001511config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001512 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001513
Will Deacon7b7bf492011-05-19 13:21:14 +01001514config HAVE_ARCH_PFN_VALID
1515 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1516
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001517config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001518 bool "High Memory Support"
1519 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001520 help
1521 The address space of ARM processors is only 4 Gigabytes large
1522 and it has to accommodate user address space, kernel address
1523 space as well as some memory mapped IO. That means that, if you
1524 have a large amount of physical memory and/or IO, not all of the
1525 memory can be "permanently mapped" by the kernel. The physical
1526 memory that is not permanently mapped is called "high memory".
1527
1528 Depending on the selected kernel/user memory split, minimum
1529 vmalloc space and actual amount of RAM, you may not need this
1530 option which should result in a slightly faster kernel.
1531
1532 If unsure, say n.
1533
Russell King65cec8e2009-08-17 20:02:06 +01001534config HIGHPTE
1535 bool "Allocate 2nd-level pagetables from highmem"
1536 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001537
Jamie Iles1b8873a2010-02-02 20:25:44 +01001538config HW_PERF_EVENTS
1539 bool "Enable hardware performance counter support for perf events"
Will Deaconfe166142010-04-30 11:37:51 +01001540 depends on PERF_EVENTS && CPU_HAS_PMU
Jamie Iles1b8873a2010-02-02 20:25:44 +01001541 default y
1542 help
1543 Enable hardware performance counter support for perf events. If
1544 disabled, perf events will use software events only.
1545
Dave Hansen3f22ab22005-06-23 00:07:43 -07001546source "mm/Kconfig"
1547
Magnus Dammc1b2d972010-07-05 10:00:11 +01001548config FORCE_MAX_ZONEORDER
1549 int "Maximum zone order" if ARCH_SHMOBILE
1550 range 11 64 if ARCH_SHMOBILE
1551 default "9" if SA1111
1552 default "11"
1553 help
1554 The kernel memory allocator divides physically contiguous memory
1555 blocks into "zones", where each zone is a power of two number of
1556 pages. This option selects the largest power of two that the kernel
1557 keeps in the memory allocator. If you need to allocate very large
1558 blocks of physically contiguous memory, then you may need to
1559 increase this value.
1560
1561 This config option is actually maximum order plus one. For example,
1562 a value of 11 means that the largest free memory block is 2^10 pages.
1563
Linus Torvalds1da177e2005-04-16 15:20:36 -07001564config LEDS
1565 bool "Timer and CPU usage LEDs"
Adrian Bunke055d5bf2008-04-22 01:43:27 +01001566 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
Sascha Hauer8c8fdbc2009-04-01 12:40:15 +02001567 ARCH_EBSA285 || ARCH_INTEGRATOR || \
Linus Torvalds1da177e2005-04-16 15:20:36 -07001568 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1569 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
SAN People73a59c12006-01-09 17:05:41 +00001570 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
Jürgen Schindele25329672008-09-16 21:36:30 +01001571 ARCH_AT91 || ARCH_DAVINCI || \
Colin Tuckleyff3042f2009-05-30 13:56:13 +01001572 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
Linus Torvalds1da177e2005-04-16 15:20:36 -07001573 help
1574 If you say Y here, the LEDs on your machine will be used
1575 to provide useful information about your current system status.
1576
1577 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1578 be able to select which LEDs are active using the options below. If
1579 you are compiling a kernel for the EBSA-110 or the LART however, the
1580 red LED will simply flash regularly to indicate that the system is
1581 still functional. It is safe to say Y here if you have a CATS
1582 system, but the driver will do nothing.
1583
1584config LEDS_TIMER
1585 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
David Brownelleebdf7d72007-04-02 12:48:10 -07001586 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1587 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -07001588 depends on LEDS
Kevin Hilman0567a0c2007-03-13 20:29:24 +01001589 depends on !GENERIC_CLOCKEVENTS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001590 default y if ARCH_EBSA110
1591 help
1592 If you say Y here, one of the system LEDs (the green one on the
1593 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1594 will flash regularly to indicate that the system is still
1595 operational. This is mainly useful to kernel hackers who are
1596 debugging unstable kernels.
1597
1598 The LART uses the same LED for both Timer LED and CPU usage LED
1599 functions. You may choose to use both, but the Timer LED function
1600 will overrule the CPU usage LED.
1601
1602config LEDS_CPU
1603 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
David Brownelleebdf7d72007-04-02 12:48:10 -07001604 !ARCH_OMAP) \
1605 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1606 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -07001607 depends on LEDS
1608 help
1609 If you say Y here, the red LED will be used to give a good real
1610 time indication of CPU usage, by lighting whenever the idle task
1611 is not currently executing.
1612
1613 The LART uses the same LED for both Timer LED and CPU usage LED
1614 functions. You may choose to use both, but the Timer LED function
1615 will overrule the CPU usage LED.
1616
1617config ALIGNMENT_TRAP
1618 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001619 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001620 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001621 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001622 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001623 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001624 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1625 address divisible by 4. On 32-bit ARM processors, these non-aligned
1626 fetch/store instructions will be emulated in software if you say
1627 here, which has a severe performance impact. This is necessary for
1628 correct operation of some network protocols. With an IP-only
1629 configuration it is safe to say N, otherwise say Y.
1630
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001631config UACCESS_WITH_MEMCPY
1632 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1633 depends on MMU && EXPERIMENTAL
1634 default y if CPU_FEROCEON
1635 help
1636 Implement faster copy_to_user and clear_user methods for CPU
1637 cores where a 8-word STM instruction give significantly higher
1638 memory write throughput than a sequence of individual 32bit stores.
1639
1640 A possible side effect is a slight increase in scheduling latency
1641 between threads sharing the same address space if they invoke
1642 such copy operations with large buffers.
1643
1644 However, if the CPU data cache is using a write-allocate mode,
1645 this option is unlikely to provide any performance gain.
1646
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001647config SECCOMP
1648 bool
1649 prompt "Enable seccomp to safely compute untrusted bytecode"
1650 ---help---
1651 This kernel feature is useful for number crunching applications
1652 that may need to compute untrusted bytecode during their
1653 execution. By using pipes or other transports made available to
1654 the process as file descriptors supporting the read/write
1655 syscalls, it's possible to isolate those applications in
1656 their own address space using seccomp. Once seccomp is
1657 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1658 and the task is only allowed to execute a few safe syscalls
1659 defined by each seccomp mode.
1660
Nicolas Pitrec743f382010-05-24 23:55:42 -04001661config CC_STACKPROTECTOR
1662 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
Russell King4a50bfe2010-12-05 23:06:22 +00001663 depends on EXPERIMENTAL
Nicolas Pitrec743f382010-05-24 23:55:42 -04001664 help
1665 This option turns on the -fstack-protector GCC feature. This
1666 feature puts, at the beginning of functions, a canary value on
1667 the stack just before the return address, and validates
1668 the value just before actually returning. Stack based buffer
1669 overflows (that need to overwrite this return address) now also
1670 overwrite the canary, which gets detected and the attack is then
1671 neutralized via a kernel panic.
1672 This feature requires gcc version 4.2 or above.
1673
Uwe Kleine-König73a65b32010-01-19 10:13:14 +01001674config DEPRECATED_PARAM_STRUCT
1675 bool "Provide old way to pass kernel parameters"
1676 help
1677 This was deprecated in 2001 and announced to live on for 5 years.
1678 Some old boot loaders still use this way.
1679
Linus Torvalds1da177e2005-04-16 15:20:36 -07001680endmenu
1681
1682menu "Boot options"
1683
Grant Likely9eb8f672011-04-28 14:27:20 -06001684config USE_OF
1685 bool "Flattened Device Tree support"
1686 select OF
1687 select OF_EARLY_FLATTREE
1688 help
1689 Include support for flattened device tree machine descriptions.
1690
Linus Torvalds1da177e2005-04-16 15:20:36 -07001691# Compressed boot loader in ROM. Yes, we really want to ask about
1692# TEXT and BSS so we preserve their values in the config files.
1693config ZBOOT_ROM_TEXT
1694 hex "Compressed ROM boot loader base address"
1695 default "0"
1696 help
1697 The physical address at which the ROM-able zImage is to be
1698 placed in the target. Platforms which normally make use of
1699 ROM-able zImage formats normally set this to a suitable
1700 value in their defconfig file.
1701
1702 If ZBOOT_ROM is not enabled, this has no effect.
1703
1704config ZBOOT_ROM_BSS
1705 hex "Compressed ROM boot loader BSS address"
1706 default "0"
1707 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001708 The base address of an area of read/write memory in the target
1709 for the ROM-able zImage which must be available while the
1710 decompressor is running. It must be large enough to hold the
1711 entire decompressed kernel plus an additional 128 KiB.
1712 Platforms which normally make use of ROM-able zImage formats
1713 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001714
1715 If ZBOOT_ROM is not enabled, this has no effect.
1716
1717config ZBOOT_ROM
1718 bool "Compressed boot loader in ROM/flash"
1719 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1720 help
1721 Say Y here if you intend to execute your compressed kernel image
1722 (zImage) directly from ROM or flash. If unsure, say N.
1723
Simon Hormanf45b1142011-01-11 04:01:08 +01001724config ZBOOT_ROM_MMCIF
1725 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
1726 depends on ZBOOT_ROM && ARCH_SH7372 && EXPERIMENTAL
1727 help
1728 Say Y here to include experimental MMCIF loading code in the
1729 ROM-able zImage. With this enabled it is possible to write the
1730 the ROM-able zImage kernel image to an MMC card and boot the
1731 kernel straight from the reset vector. At reset the processor
1732 Mask ROM will load the first part of the the ROM-able zImage
1733 which in turn loads the rest the kernel image to RAM using the
1734 MMCIF hardware block.
1735
Linus Torvalds1da177e2005-04-16 15:20:36 -07001736config CMDLINE
1737 string "Default kernel command string"
1738 default ""
1739 help
1740 On some architectures (EBSA110 and CATS), there is currently no way
1741 for the boot loader to pass arguments to the kernel. For these
1742 architectures, you should supply some command-line options at build
1743 time by entering them here. As a minimum, you should specify the
1744 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1745
Victor Boivie4394c122011-05-04 17:07:55 +01001746choice
1747 prompt "Kernel command line type" if CMDLINE != ""
1748 default CMDLINE_FROM_BOOTLOADER
1749
1750config CMDLINE_FROM_BOOTLOADER
1751 bool "Use bootloader kernel arguments if available"
1752 help
1753 Uses the command-line options passed by the boot loader. If
1754 the boot loader doesn't provide any, the default kernel command
1755 string provided in CMDLINE will be used.
1756
1757config CMDLINE_EXTEND
1758 bool "Extend bootloader kernel arguments"
1759 help
1760 The command-line arguments provided by the boot loader will be
1761 appended to the default kernel command string.
1762
Alexander Holler92d20402010-02-16 19:04:53 +01001763config CMDLINE_FORCE
1764 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001765 help
1766 Always use the default kernel command string, even if the boot
1767 loader passes other arguments to the kernel.
1768 This is useful if you cannot or don't want to change the
1769 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001770endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001771
Linus Torvalds1da177e2005-04-16 15:20:36 -07001772config XIP_KERNEL
1773 bool "Kernel Execute-In-Place from ROM"
1774 depends on !ZBOOT_ROM
1775 help
1776 Execute-In-Place allows the kernel to run from non-volatile storage
1777 directly addressable by the CPU, such as NOR flash. This saves RAM
1778 space since the text section of the kernel is not loaded from flash
1779 to RAM. Read-write sections, such as the data section and stack,
1780 are still copied to RAM. The XIP kernel is not compressed since
1781 it has to run directly from flash, so it will take more space to
1782 store it. The flash address used to link the kernel object files,
1783 and for storing it, is configuration dependent. Therefore, if you
1784 say Y here, you must know the proper physical address where to
1785 store the kernel image depending on your own flash memory usage.
1786
1787 Also note that the make target becomes "make xipImage" rather than
1788 "make zImage" or "make Image". The final kernel binary to put in
1789 ROM memory will be arch/arm/boot/xipImage.
1790
1791 If unsure, say N.
1792
1793config XIP_PHYS_ADDR
1794 hex "XIP Kernel Physical Location"
1795 depends on XIP_KERNEL
1796 default "0x00080000"
1797 help
1798 This is the physical address in your flash memory the kernel will
1799 be linked for and stored to. This address is dependent on your
1800 own flash usage.
1801
Richard Purdiec587e4a2007-02-06 21:29:00 +01001802config KEXEC
1803 bool "Kexec system call (EXPERIMENTAL)"
1804 depends on EXPERIMENTAL
1805 help
1806 kexec is a system call that implements the ability to shutdown your
1807 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02001808 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01001809 you can start any kernel with it, not just Linux.
1810
1811 It is an ongoing process to be certain the hardware in a machine
1812 is properly shutdown, so do not be surprised if this code does not
1813 initially work for you. It may help to enable device hotplugging
1814 support.
1815
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01001816config ATAGS_PROC
1817 bool "Export atags in procfs"
Uli Luckasb98d7292008-02-22 16:45:18 +01001818 depends on KEXEC
1819 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01001820 help
1821 Should the atags used to boot the kernel be exported in an "atags"
1822 file in procfs. Useful with kexec.
1823
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01001824config CRASH_DUMP
1825 bool "Build kdump crash kernel (EXPERIMENTAL)"
1826 depends on EXPERIMENTAL
1827 help
1828 Generate crash dump after being started by kexec. This should
1829 be normally only set in special crash dump kernels which are
1830 loaded in the main kernel with kexec-tools into a specially
1831 reserved region and then later executed after a crash by
1832 kdump/kexec. The crash dump kernel must be compiled to a
1833 memory address not used by the main kernel
1834
1835 For more details see Documentation/kdump/kdump.txt
1836
Eric Miaoe69edc792010-07-05 15:56:50 +02001837config AUTO_ZRELADDR
1838 bool "Auto calculation of the decompressed kernel image address"
1839 depends on !ZBOOT_ROM && !ARCH_U300
1840 help
1841 ZRELADDR is the physical address where the decompressed kernel
1842 image will be placed. If AUTO_ZRELADDR is selected, the address
1843 will be determined at run-time by masking the current IP with
1844 0xf8000000. This assumes the zImage being placed in the first 128MB
1845 from start of memory.
1846
Linus Torvalds1da177e2005-04-16 15:20:36 -07001847endmenu
1848
Russell Kingac9d7ef2008-08-18 17:26:00 +01001849menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001850
Ben Dooks89c52ed2009-07-30 23:23:24 +01001851if ARCH_HAS_CPUFREQ
Linus Torvalds1da177e2005-04-16 15:20:36 -07001852
1853source "drivers/cpufreq/Kconfig"
1854
Yong Shen64f102b2010-10-21 21:18:59 +08001855config CPU_FREQ_IMX
1856 tristate "CPUfreq driver for i.MX CPUs"
1857 depends on ARCH_MXC && CPU_FREQ
1858 help
1859 This enables the CPUfreq driver for i.MX CPUs.
1860
Linus Torvalds1da177e2005-04-16 15:20:36 -07001861config CPU_FREQ_SA1100
1862 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001863
1864config CPU_FREQ_SA1110
1865 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001866
1867config CPU_FREQ_INTEGRATOR
1868 tristate "CPUfreq driver for ARM Integrator CPUs"
1869 depends on ARCH_INTEGRATOR && CPU_FREQ
1870 default y
1871 help
1872 This enables the CPUfreq driver for ARM Integrator CPUs.
1873
1874 For details, take a look at <file:Documentation/cpu-freq>.
1875
1876 If in doubt, say Y.
1877
Russell King9e2697f2007-12-14 13:30:14 +00001878config CPU_FREQ_PXA
1879 bool
1880 depends on CPU_FREQ && ARCH_PXA && PXA25x
1881 default y
1882 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1883
Mark Brownb3748dd2009-06-15 11:23:20 +01001884config CPU_FREQ_S3C64XX
1885 bool "CPUfreq support for Samsung S3C64XX CPUs"
1886 depends on CPU_FREQ && CPU_S3C6410
1887
Ben Dooks9d56c022009-07-30 23:23:25 +01001888config CPU_FREQ_S3C
1889 bool
1890 help
1891 Internal configuration node for common cpufreq on Samsung SoC
1892
1893config CPU_FREQ_S3C24XX
Russell King4a50bfe2010-12-05 23:06:22 +00001894 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
Ben Dooks9d56c022009-07-30 23:23:25 +01001895 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1896 select CPU_FREQ_S3C
1897 help
1898 This enables the CPUfreq driver for the Samsung S3C24XX family
1899 of CPUs.
1900
1901 For details, take a look at <file:Documentation/cpu-freq>.
1902
1903 If in doubt, say N.
1904
1905config CPU_FREQ_S3C24XX_PLL
Russell King4a50bfe2010-12-05 23:06:22 +00001906 bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
Ben Dooks9d56c022009-07-30 23:23:25 +01001907 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1908 help
1909 Compile in support for changing the PLL frequency from the
1910 S3C24XX series CPUfreq driver. The PLL takes time to settle
1911 after a frequency change, so by default it is not enabled.
1912
1913 This also means that the PLL tables for the selected CPU(s) will
1914 be built which may increase the size of the kernel image.
1915
1916config CPU_FREQ_S3C24XX_DEBUG
1917 bool "Debug CPUfreq Samsung driver core"
1918 depends on CPU_FREQ_S3C24XX
1919 help
1920 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1921
1922config CPU_FREQ_S3C24XX_IODEBUG
1923 bool "Debug CPUfreq Samsung driver IO timing"
1924 depends on CPU_FREQ_S3C24XX
1925 help
1926 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1927
Ben Dookse6d197a2009-07-30 23:23:42 +01001928config CPU_FREQ_S3C24XX_DEBUGFS
1929 bool "Export debugfs for CPUFreq"
1930 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1931 help
1932 Export status information via debugfs.
1933
Linus Torvalds1da177e2005-04-16 15:20:36 -07001934endif
1935
Russell Kingac9d7ef2008-08-18 17:26:00 +01001936source "drivers/cpuidle/Kconfig"
1937
1938endmenu
1939
Linus Torvalds1da177e2005-04-16 15:20:36 -07001940menu "Floating point emulation"
1941
1942comment "At least one emulation must be selected"
1943
1944config FPE_NWFPE
1945 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01001946 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001947 ---help---
1948 Say Y to include the NWFPE floating point emulator in the kernel.
1949 This is necessary to run most binaries. Linux does not currently
1950 support floating point hardware so you need to say Y here even if
1951 your machine has an FPA or floating point co-processor podule.
1952
1953 You may say N here if you are going to load the Acorn FPEmulator
1954 early in the bootup.
1955
1956config FPE_NWFPE_XP
1957 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00001958 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07001959 help
1960 Say Y to include 80-bit support in the kernel floating-point
1961 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1962 Note that gcc does not generate 80-bit operations by default,
1963 so in most cases this option only enlarges the size of the
1964 floating point emulator without any good reason.
1965
1966 You almost surely want to say N here.
1967
1968config FPE_FASTFPE
1969 bool "FastFPE math emulation (EXPERIMENTAL)"
Nicolas Pitre8993a442006-01-14 16:36:50 +00001970 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001971 ---help---
1972 Say Y here to include the FAST floating point emulator in the kernel.
1973 This is an experimental much faster emulator which now also has full
1974 precision for the mantissa. It does not support any exceptions.
1975 It is very simple, and approximately 3-6 times faster than NWFPE.
1976
1977 It should be sufficient for most programs. It may be not suitable
1978 for scientific calculations, but you have to check this for yourself.
1979 If you do not feel you need a faster FP emulation you should better
1980 choose NWFPE.
1981
1982config VFP
1983 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00001984 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07001985 help
1986 Say Y to include VFP support code in the kernel. This is needed
1987 if your hardware includes a VFP unit.
1988
1989 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1990 release notes and additional status information.
1991
1992 Say N if your target does not have VFP hardware.
1993
Catalin Marinas25ebee02007-09-25 15:22:24 +01001994config VFPv3
1995 bool
1996 depends on VFP
1997 default y if CPU_V7
1998
Catalin Marinasb5872db2008-01-10 19:16:17 +01001999config NEON
2000 bool "Advanced SIMD (NEON) Extension support"
2001 depends on VFPv3 && CPU_V7
2002 help
2003 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2004 Extension.
2005
Linus Torvalds1da177e2005-04-16 15:20:36 -07002006endmenu
2007
2008menu "Userspace binary formats"
2009
2010source "fs/Kconfig.binfmt"
2011
2012config ARTHUR
2013 tristate "RISC OS personality"
Nicolas Pitre704bdda02006-01-14 16:33:50 +00002014 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07002015 help
2016 Say Y here to include the kernel code necessary if you want to run
2017 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2018 experimental; if this sounds frightening, say N and sleep in peace.
2019 You can also say M here to compile this support as a module (which
2020 will be called arthur).
2021
2022endmenu
2023
2024menu "Power management options"
2025
Russell Kingeceab4a2005-11-15 11:31:41 +00002026source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002027
Johannes Bergf4cb5702007-12-08 02:14:00 +01002028config ARCH_SUSPEND_POSSIBLE
Russell King586893e2011-05-25 21:47:48 +01002029 depends on !ARCH_S5P64X0 && !ARCH_S5PC100
Russell King6a786182011-04-02 10:15:28 +01002030 depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
2031 CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE
Johannes Bergf4cb5702007-12-08 02:14:00 +01002032 def_bool y
2033
Linus Torvalds1da177e2005-04-16 15:20:36 -07002034endmenu
2035
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002036source "net/Kconfig"
2037
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002038source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002039
2040source "fs/Kconfig"
2041
Linus Torvalds1da177e2005-04-16 15:20:36 -07002042source "arch/arm/Kconfig.debug"
2043
2044source "security/Kconfig"
2045
2046source "crypto/Kconfig"
2047
2048source "lib/Kconfig"