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Paul Mackerras14cf11a2005-09-26 16:04:21 +10001# For a description of the syntax of this configuration file,
2# see Documentation/kbuild/kconfig-language.txt.
3#
4
5mainmenu "Linux/PowerPC Kernel Configuration"
6
7config PPC64
8 bool "64-bit kernel"
9 default n
10 help
11 This option selects whether a 32-bit or a 64-bit kernel
12 will be built.
13
Johannes Berg17e638b2007-03-19 11:53:53 +010014config PPC_PM_NEEDS_RTC_LIB
15 bool
16 select RTC_LIB
17 default y if PM
18
Paul Mackerras14cf11a2005-09-26 16:04:21 +100019config PPC32
20 bool
21 default y if !PPC64
22
23config 64BIT
24 bool
25 default y if PPC64
26
27config PPC_MERGE
28 def_bool y
29
30config MMU
31 bool
32 default y
33
Paul Mackerras14cf11a2005-09-26 16:04:21 +100034config GENERIC_HARDIRQS
35 bool
36 default y
37
Ingo Molnar0d7012a2006-06-29 02:24:43 -070038config IRQ_PER_CPU
39 bool
40 default y
41
Paul Mackerras14cf11a2005-09-26 16:04:21 +100042config RWSEM_GENERIC_SPINLOCK
43 bool
44
45config RWSEM_XCHGADD_ALGORITHM
46 bool
47 default y
48
David Howellsf0d1b0b2006-12-08 02:37:49 -080049config ARCH_HAS_ILOG2_U32
50 bool
David Howellsef55d532006-12-08 02:37:53 -080051 default y
David Howellsf0d1b0b2006-12-08 02:37:49 -080052
53config ARCH_HAS_ILOG2_U64
54 bool
David Howellsef55d532006-12-08 02:37:53 -080055 default y if 64BIT
David Howellsf0d1b0b2006-12-08 02:37:49 -080056
Akinobu Mitae779b2f2006-03-26 01:39:33 -080057config GENERIC_HWEIGHT
58 bool
59 default y
60
Paul Mackerras14cf11a2005-09-26 16:04:21 +100061config GENERIC_CALIBRATE_DELAY
62 bool
63 default y
64
Jon Mason0a9cb462006-05-19 15:35:32 -050065config GENERIC_FIND_NEXT_BIT
66 bool
67 default y
68
Paul Mackerras14cf11a2005-09-26 16:04:21 +100069config PPC
70 bool
71 default y
72
73config EARLY_PRINTK
74 bool
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +110075 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +100076
77config COMPAT
78 bool
79 default y if PPC64
80
81config SYSVIPC_COMPAT
82 bool
83 depends on COMPAT && SYSVIPC
84 default y
85
86# All PPC32s use generic nvram driver through ppc_md
87config GENERIC_NVRAM
88 bool
89 default y if PPC32
90
91config SCHED_NO_NO_OMIT_FRAME_POINTER
92 bool
93 default y
94
95config ARCH_MAY_HAVE_PC_FDC
96 bool
Stephen Rothwellbed59272007-03-04 17:04:44 +110097 default !PPC_PSERIES || PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +100098
Kumar Gala08264cb2006-01-10 21:43:56 -060099config PPC_OF
100 def_bool y
101
102config PPC_UDBG_16550
103 bool
104 default n
105
Kumar Gala08264cb2006-01-10 21:43:56 -0600106config GENERIC_TBSYNC
107 bool
108 default y if PPC32 && SMP
109 default n
110
Al Viroe65e1fc2006-09-12 03:04:40 -0400111config AUDIT_ARCH
112 bool
113 default y
114
Jeremy Fitzhardinge73c9cea2006-12-08 03:30:41 -0800115config GENERIC_BUG
116 bool
117 default y
118 depends on BUG
119
Johannes Bergb3028872007-03-20 05:18:02 +1100120config SYS_SUPPORTS_APM_EMULATION
121 bool
122
Christoph Lameter30520862007-05-06 14:49:38 -0700123#
124# Powerpc uses the slab allocator to manage its ptes and the
125# page structs of ptes are used for splitting the page table
126# lock for configurations supporting more than SPLIT_PTLOCK_CPUS.
127#
128# In that special configuration the page structs of slabs are modified.
129# This setting disables the selection of SLUB as a slab allocator.
130#
131config ARCH_USES_SLAB_PAGE_STRUCT
132 bool
133 default y
134 depends on SPLIT_PTLOCK_CPUS <= NR_CPUS
135
Kumar Galaf4fc4a52006-01-16 10:53:22 -0600136config DEFAULT_UIMAGE
137 bool
138 help
139 Used to allow a board to specify it wants a uImage built by default
140 default n
141
Johannes Berg543b9fd2007-05-03 22:31:38 +1000142config PPC64_SWSUSP
143 bool
144 depends on PPC64 && (BROKEN || (PPC_PMAC64 && EXPERIMENTAL))
145 default y
146
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000147menu "Processor support"
148choice
149 prompt "Processor Type"
150 depends on PPC32
151 default 6xx
152
Kumar Gala08264cb2006-01-10 21:43:56 -0600153config CLASSIC32
Grant Likely650f3282006-12-04 17:29:13 -0700154 bool "52xx/6xx/7xx/74xx"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000155 select PPC_FPU
Kumar Gala08264cb2006-01-10 21:43:56 -0600156 select 6xx
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000157 help
158 There are four families of PowerPC chips supported. The more common
159 types (601, 603, 604, 740, 750, 7400), the Motorola embedded
160 versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
161 embedded versions (403 and 405) and the high end 64 bit Power
162 processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
Grant Likely650f3282006-12-04 17:29:13 -0700163
164 This option is the catch-all for 6xx types, including some of the
165 embedded versions. Unless there is see an option for the specific
166 chip family you are using, you want this option.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000167
Grant Likely650f3282006-12-04 17:29:13 -0700168 You do not want this if you are building a kernel for a 64 bit
169 IBM RS/6000 or an Apple G5, choose 6xx.
170
171 If unsure, select this option
172
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000173 Note that the kernel runs in 32-bit mode even on 64-bit chips.
174
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000175config PPC_82xx
176 bool "Freescale 82xx"
Kumar Gala08264cb2006-01-10 21:43:56 -0600177 select 6xx
178 select PPC_FPU
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000179
180config PPC_83xx
181 bool "Freescale 83xx"
Kumar Gala08264cb2006-01-10 21:43:56 -0600182 select 6xx
183 select FSL_SOC
184 select 83xx
185 select PPC_FPU
Scott Wood270429b2007-04-17 09:24:51 +1000186 select WANT_DEVICE_TREE
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000187
Becky Bruce63dafe52006-01-14 16:57:39 -0600188config PPC_85xx
189 bool "Freescale 85xx"
190 select E500
191 select FSL_SOC
192 select 85xx
Scott Wood4536b932007-04-27 03:09:01 +1000193 select WANT_DEVICE_TREE
Becky Bruce63dafe52006-01-14 16:57:39 -0600194
Jon Loeligerc9b484b2006-06-17 17:52:35 -0500195config PPC_86xx
196 bool "Freescale 86xx"
197 select 6xx
198 select FSL_SOC
Jon Loeliger3e4e97f2007-03-07 14:48:45 -0600199 select FSL_PCIE
Jon Loeligerc9b484b2006-06-17 17:52:35 -0500200 select PPC_FPU
201 select ALTIVEC
202 help
203 The Freescale E600 SoCs have 74xx cores.
204
Vitaly Bordug5902ebc2007-01-24 22:41:06 +0300205config PPC_8xx
206 bool "Freescale 8xx"
207 select FSL_SOC
208 select 8xx
209
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000210config 40x
211 bool "AMCC 40x"
Benjamin Herrenschmidt4c75a6f2006-11-11 17:24:53 +1100212 select PPC_DCR_NATIVE
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000213
214config 44x
215 bool "AMCC 44x"
Benjamin Herrenschmidt4c75a6f2006-11-11 17:24:53 +1100216 select PPC_DCR_NATIVE
David Gibsonf6dfc802007-05-08 14:10:01 +1000217 select WANT_DEVICE_TREE
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000218
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000219config E200
220 bool "Freescale e200"
221
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000222endchoice
223
224config POWER4_ONLY
225 bool "Optimize for POWER4"
Paul Mackerras187a0062005-10-06 12:49:05 +1000226 depends on PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000227 default n
228 ---help---
229 Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
230 The resulting binary will not work on POWER3 or RS64 processors
231 when compiled with binutils 2.15 or later.
232
233config POWER3
234 bool
Paul Mackerras187a0062005-10-06 12:49:05 +1000235 depends on PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000236 default y if !POWER4_ONLY
237
238config POWER4
Paul Mackerras187a0062005-10-06 12:49:05 +1000239 depends on PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000240 def_bool y
241
Kumar Gala08264cb2006-01-10 21:43:56 -0600242config 6xx
243 bool
244
245# this is temp to handle compat with arch=ppc
Vitaly Bordug5902ebc2007-01-24 22:41:06 +0300246config 8xx
247 bool
248
249# this is temp to handle compat with arch=ppc
Kumar Gala08264cb2006-01-10 21:43:56 -0600250config 83xx
251 bool
252
Becky Bruce63dafe52006-01-14 16:57:39 -0600253# this is temp to handle compat with arch=ppc
254config 85xx
255 bool
256
257config E500
258 bool
259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000260config PPC_FPU
Paul Mackerras187a0062005-10-06 12:49:05 +1000261 bool
262 default y if PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000263
Benjamin Herrenschmidt4c75a6f2006-11-11 17:24:53 +1100264config PPC_DCR_NATIVE
265 bool
266 default n
267
268config PPC_DCR_MMIO
269 bool
270 default n
271
272config PPC_DCR
273 bool
274 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
275 default y
276
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100277config PPC_OF_PLATFORM_PCI
278 bool
279 depends on PPC64 # not supported on 32 bits yet
280 default n
281
David Gibsonf6dfc802007-05-08 14:10:01 +1000282config 4xx
283 bool
284 depends on 40x || 44x
285 default y
286
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000287config BOOKE
288 bool
David Gibsonf6dfc802007-05-08 14:10:01 +1000289 depends on E200 || E500 || 44x
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000290 default y
291
292config FSL_BOOKE
293 bool
294 depends on E200 || E500
295 default y
296
297config PTE_64BIT
298 bool
299 depends on 44x || E500
300 default y if 44x
301 default y if E500 && PHYS_64BIT
302
303config PHYS_64BIT
304 bool 'Large physical address support' if E500
305 depends on 44x || E500
Benjamin Herrenschmidt3d1ea8e2006-11-11 17:25:19 +1100306 select RESOURCES_64BIT
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000307 default y if 44x
308 ---help---
309 This option enables kernel support for larger than 32-bit physical
310 addresses. This features is not be available on all e500 cores.
311
312 If in doubt, say N here.
313
314config ALTIVEC
315 bool "AltiVec Support"
Kumar Gala08264cb2006-01-10 21:43:56 -0600316 depends on CLASSIC32 || POWER4
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000317 ---help---
318 This option enables kernel support for the Altivec extensions to the
319 PowerPC processor. The kernel currently supports saving and restoring
320 altivec registers, and turning on the 'altivec enable' bit so user
321 processes can execute altivec instructions.
322
323 This option is only usefully if you have a processor that supports
324 altivec (G4, otherwise known as 74xx series), but does not have
325 any affect on a non-altivec cpu (it does, however add code to the
326 kernel).
327
328 If in doubt, say Y here.
329
330config SPE
331 bool "SPE Support"
332 depends on E200 || E500
Becky Bruce63dafe52006-01-14 16:57:39 -0600333 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000334 ---help---
335 This option enables kernel support for the Signal Processing
336 Extensions (SPE) to the PowerPC processor. The kernel currently
337 supports saving and restoring SPE registers, and turning on the
338 'spe enable' bit so user processes can execute SPE instructions.
339
340 This option is only useful if you have a processor that supports
341 SPE (e500, otherwise known as 85xx series), but does not have any
342 effect on a non-spe cpu (it does, however add code to the kernel).
343
344 If in doubt, say Y here.
345
346config PPC_STD_MMU
347 bool
348 depends on 6xx || POWER3 || POWER4 || PPC64
349 default y
350
351config PPC_STD_MMU_32
352 def_bool y
353 depends on PPC_STD_MMU && PPC32
354
Paul Mackerrasc6622f62006-02-24 10:06:59 +1100355config VIRT_CPU_ACCOUNTING
356 bool "Deterministic task and CPU time accounting"
357 depends on PPC64
358 default y
359 help
360 Select this option to enable more accurate task and CPU time
361 accounting. This is done by reading a CPU counter on each
362 kernel entry and exit and on transitions within the kernel
363 between system, softirq and hardirq state, so there is a
364 small performance impact. This also enables accounting of
365 stolen time on logically-partitioned systems running on
366 IBM POWER5-based machines.
367
368 If in doubt, say Y here.
369
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000370config SMP
371 depends on PPC_STD_MMU
372 bool "Symmetric multi-processing support"
373 ---help---
374 This enables support for systems with more than one CPU. If you have
375 a system with only one CPU, say N. If you have a system with more
376 than one CPU, say Y. Note that the kernel does not currently
377 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
378 since they have inadequate hardware support for multiprocessor
379 operation.
380
381 If you say N here, the kernel will run on single and multiprocessor
382 machines, but will use only one CPU of a multiprocessor machine. If
383 you say Y here, the kernel will run on single-processor machines.
384 On a single-processor machine, the kernel will run faster if you say
385 N here.
386
387 If you don't know what to do here, say N.
388
389config NR_CPUS
Olaf Heringe8a167a2005-12-01 21:10:10 +0100390 int "Maximum number of CPUs (2-128)"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000391 range 2 128
392 depends on SMP
393 default "32" if PPC64
394 default "4"
395
396config NOT_COHERENT_CACHE
397 bool
398 depends on 4xx || 8xx || E200
399 default y
400endmenu
401
402source "init/Kconfig"
403
Kumar Gala4330f5d2007-03-16 09:32:17 -0500404source "arch/powerpc/platforms/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000405
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000406menu "Kernel options"
407
408config HIGHMEM
409 bool "High memory support"
410 depends on PPC32
411
412source kernel/Kconfig.hz
413source kernel/Kconfig.preempt
414source "fs/Kconfig.binfmt"
415
416# We optimistically allocate largepages from the VM, so make the limit
417# large enough (16MB). This badly named config option is actually
418# max order + 1
419config FORCE_MAX_ZONEORDER
420 int
421 depends on PPC64
Mike Kravetz02864862005-11-07 13:48:59 -0800422 default "9" if PPC_64K_PAGES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000423 default "13"
424
425config MATH_EMULATION
426 bool "Math emulation"
Kumar Gala4d527192007-01-26 00:23:34 -0600427 depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000428 ---help---
429 Some PowerPC chips designed for embedded applications do not have
430 a floating-point unit and therefore do not implement the
431 floating-point instructions in the PowerPC instruction set. If you
432 say Y here, the kernel will include code to emulate a floating-point
433 unit, which will allow programs that use floating-point
434 instructions to run.
435
436config IOMMU_VMERGE
437 bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
438 depends on EXPERIMENTAL && PPC64
439 default n
440 help
441 Cause IO segments sent to a device for DMA to be merged virtually
442 by the IOMMU when they happen to have been allocated contiguously.
443 This doesn't add pressure to the IOMMU allocator. However, some
444 drivers don't support getting large merged segments coming back
445 from *_map_sg(). Say Y if you know the drivers you are using are
446 properly handling this case.
447
448config HOTPLUG_CPU
449 bool "Support for enabling/disabling CPUs"
450 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
451 ---help---
452 Say Y here to be able to disable and re-enable individual
453 CPUs at runtime on SMP machines.
454
455 Say N if you are unsure.
456
Yasunori Gotocc576372006-06-29 02:24:27 -0700457config ARCH_ENABLE_MEMORY_HOTPLUG
458 def_bool y
459
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000460config KEXEC
461 bool "kexec system call (EXPERIMENTAL)"
462 depends on PPC_MULTIPLATFORM && EXPERIMENTAL
463 help
464 kexec is a system call that implements the ability to shutdown your
465 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400466 but it is independent of the system firmware. And like a reboot
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000467 you can start any kernel with it, not just Linux.
468
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400469 The name comes from the similarity to the exec system call.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000470
471 It is an ongoing process to be certain the hardware in a machine
472 is properly shutdown, so do not be surprised if this code does not
473 initially work for you. It may help to enable device hotplugging
474 support. As of this writing the exact hardware interface is
475 strongly in flux, so no good recommendation can be made.
476
Haren Mynenie8625d462006-01-14 13:48:25 -0800477config CRASH_DUMP
Michael Ellermancd9c99d2006-03-10 15:01:08 +1100478 bool "Build a kdump crash kernel (EXPERIMENTAL)"
Haren Mynenie8625d462006-01-14 13:48:25 -0800479 depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL
480 help
481 Build a kernel suitable for use as a kdump capture kernel.
482 The kernel will be linked at a different address than normal, and
483 so can only be used for Kdump.
484
485 Don't change this unless you know what you are doing.
486
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000487config PPCBUG_NVRAM
488 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
489 default y if PPC_PREP
490
491config IRQ_ALL_CPUS
492 bool "Distribute interrupts on all CPUs by default"
493 depends on SMP && !MV64360
494 help
495 This option gives the kernel permission to distribute IRQs across
496 multiple CPUs. Saying N here will route all IRQs to the first
497 CPU. Generally saying Y is safe, although some problems have been
498 reported with SMP Power Macintoshes with this option enabled.
499
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700500config NUMA
501 bool "NUMA support"
502 depends on PPC64
503 default y if SMP && PPC_PSERIES
504
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700505config NODES_SHIFT
506 int
507 default "4"
508 depends on NEED_MULTIPLE_NODES
509
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000510config ARCH_SELECT_MEMORY_MODEL
511 def_bool y
512 depends on PPC64
513
514config ARCH_FLATMEM_ENABLE
Andy Whitcroft9100b202005-11-29 19:20:55 +0000515 def_bool y
516 depends on (PPC64 && !NUMA) || PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000517
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000518config ARCH_SPARSEMEM_ENABLE
519 def_bool y
Andy Whitcroft9100b202005-11-29 19:20:55 +0000520 depends on PPC64
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100521
522config ARCH_SPARSEMEM_DEFAULT
523 def_bool y
Benjamin Herrenschmidt78bde532007-02-13 11:46:06 +1100524 depends on (SMP && PPC_PSERIES) || PPC_PS3
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000525
Mel Gormanc67c3cb2006-09-27 01:49:49 -0700526config ARCH_POPULATES_NODE_MAP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000527 def_bool y
Mel Gormanc67c3cb2006-09-27 01:49:49 -0700528
529source "mm/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000530
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800531config ARCH_MEMORY_PROBE
532 def_bool y
533 depends on MEMORY_HOTPLUG
534
Andy Whitcroft75167952006-10-21 10:24:14 -0700535# Some NUMA nodes have memory ranges that span
536# other nodes. Even though a pfn is valid and
537# between a node's start and end pfns, it may not
538# reside on that node. See memmap_init_zone()
539# for details.
540config NODES_SPAN_OTHER_NODES
541 def_bool y
542 depends on NEED_MULTIPLE_NODES
543
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100544config PPC_64K_PAGES
545 bool "64k page size"
Benjamin Herrenschmidt863c84b2005-11-07 00:57:58 -0800546 depends on PPC64
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100547 help
548 This option changes the kernel logical page size to 64k. On machines
Kumar Gala98750262007-04-12 18:01:34 -0500549 without processor support for 64k pages, the kernel will simulate
550 them by loading each individual 4k page on demand transparently,
551 while on hardware with such support, it will be used to map
552 normal application pages.
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100553
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000554config SCHED_SMT
555 bool "SMT (Hyperthreading) scheduler support"
556 depends on PPC64 && SMP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000557 help
558 SMT scheduler support improves the CPU scheduler's decision making
559 when dealing with POWER5 cpus at a cost of slightly increased
560 overhead in some places. If unsure say N here.
561
562config PROC_DEVICETREE
Paul Mackerras5f296752005-10-17 20:14:59 +1000563 bool "Support for device tree in /proc"
564 depends on PROC_FS
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000565 help
566 This option adds a device-tree directory under /proc which contains
567 an image of the device tree that the kernel copies from Open
Paul Mackerras5f296752005-10-17 20:14:59 +1000568 Firmware or other boot firmware. If unsure, say Y here.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000569
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000570config CMDLINE_BOOL
571 bool "Default bootloader kernel arguments"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000572
573config CMDLINE
574 string "Initial kernel command string"
575 depends on CMDLINE_BOOL
576 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
577 help
578 On some platforms, there is currently no way for the boot loader to
579 pass arguments to the kernel. For these platforms, you can supply
580 some command-line options at build time by entering them here. In
581 most cases you will need to specify the root device here.
582
583if !44x || BROKEN
584source kernel/power/Kconfig
585endif
586
587config SECCOMP
588 bool "Enable seccomp to safely compute untrusted bytecode"
589 depends on PROC_FS
590 default y
591 help
592 This kernel feature is useful for number crunching applications
593 that may need to compute untrusted bytecode during their
594 execution. By using pipes or other transports made available to
595 the process as file descriptors supporting the read/write
596 syscalls, it's possible to isolate those applications in
597 their own address space using seccomp. Once seccomp is
598 enabled via /proc/<pid>/seccomp, it cannot be disabled
599 and the task is only allowed to execute a few safe syscalls
600 defined by each seccomp mode.
601
602 If unsure, say Y. Only embedded should say N here.
603
Scott Wood270429b2007-04-17 09:24:51 +1000604config WANT_DEVICE_TREE
605 bool
606 default n
607
608config DEVICE_TREE
609 string "Static device tree source file"
610 depends on WANT_DEVICE_TREE
611 help
612 This specifies the device tree source (.dts) file to be
613 compiled and included when building the bootwrapper. If a
614 relative filename is given, then it will be relative to
615 arch/powerpc/boot/dts. If you are not using the bootwrapper,
616 or do not need to build a dts into the bootwrapper, this
617 field is ignored.
618
619 For example, this is required when building a cuImage target
620 for an older U-Boot, which cannot pass a device tree itself.
621 Such a kernel will not work with a newer U-Boot that tries to
622 pass a device tree (unless you tell it not to). If your U-Boot
623 does not mention a device tree in "help bootm", then use the
624 cuImage target and specify a device tree here. Otherwise, use
625 the uImage target and leave this field blank.
626
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000627endmenu
628
629config ISA_DMA_API
630 bool
631 default y
632
633menu "Bus options"
634
635config ISA
636 bool "Support for ISA-bus hardware"
637 depends on PPC_PREP || PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000638 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000639 help
640 Find out whether you have ISA slots on your motherboard. ISA is the
641 name of a bus system, i.e. the way the CPU talks to the other stuff
642 inside your box. If you have an Apple machine, say N here; if you
643 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
644 you have an embedded board, consult your board documentation.
645
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800646config ZONE_DMA
647 bool
648 default y
649
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000650config GENERIC_ISA_DMA
651 bool
652 depends on PPC64 || POWER4 || 6xx && !CPM2
653 default y
654
Paul Mackerras25635c72005-10-26 16:36:55 +1000655config PPC_INDIRECT_PCI
656 bool
657 depends on PCI
Becky Bruce63dafe52006-01-14 16:57:39 -0600658 default y if 40x || 44x
Paul Mackerras25635c72005-10-26 16:36:55 +1000659 default n
660
Kumar Gala4a89f7f2007-04-12 15:41:26 -0500661config PPC_INDIRECT_PCI_BE
662 bool
663 depends PPC_INDIRECT_PCI
664 default n
665
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000666config EISA
667 bool
668
669config SBUS
670 bool
671
Kumar Gala08264cb2006-01-10 21:43:56 -0600672config FSL_SOC
673 bool
674
Jon Loeliger3e4e97f2007-03-07 14:48:45 -0600675config FSL_PCIE
676 bool
677 depends on PPC_86xx
678
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000679# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
680config MCA
681 bool
682
683config PCI
Jon Loeliger53158622006-08-09 10:37:28 -0500684 bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \
Stephen Rothwellbed59272007-03-04 17:04:44 +1100685 || PPC_MPC52xx || (EMBEDDED && (PPC_PSERIES || PPC_ISERIES)) \
Josh Boyercb9e4d12007-05-08 07:28:38 +1000686 || MPC7448HPC2 || PPC_PS3 || PPC_HOLLY
Jon Loeliger53158622006-08-09 10:37:28 -0500687 default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx \
688 && !PPC_85xx && !PPC_86xx
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000689 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
690 default PCI_QSPAN if !4xx && !CPM2 && 8xx
Michael Ellermandf87ef52007-05-08 12:58:34 +1000691 select ARCH_SUPPORTS_MSI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000692 help
693 Find out whether your system includes a PCI bus. PCI is the name of
694 a bus system, i.e. the way the CPU talks to the other stuff inside
695 your box. If you say Y here, the kernel will include drivers and
696 infrastructure code to support PCI bus devices.
697
698config PCI_DOMAINS
699 bool
700 default PCI
701
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000702config PCI_QSPAN
703 bool "QSpan PCI"
704 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000705 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000706 help
707 Say Y here if you have a system based on a Motorola 8xx-series
708 embedded processor with a QSPAN PCI interface, otherwise say N.
709
710config PCI_8260
711 bool
712 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000713 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000714 default y
715
716config 8260_PCI9
Andrew Morton4a3ecc62006-06-01 20:36:04 -0700717 bool "Enable workaround for MPC826x erratum PCI 9"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000718 depends on PCI_8260 && !ADS8272
719 default y
720
721choice
Andrew Morton4a3ecc62006-06-01 20:36:04 -0700722 prompt "IDMA channel for PCI 9 workaround"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000723 depends on 8260_PCI9
724
725config 8260_PCI9_IDMA1
726 bool "IDMA1"
727
728config 8260_PCI9_IDMA2
729 bool "IDMA2"
730
731config 8260_PCI9_IDMA3
732 bool "IDMA3"
733
734config 8260_PCI9_IDMA4
735 bool "IDMA4"
736
737endchoice
738
Jake Moilanenbb53bb32006-06-07 16:05:46 -0500739source "drivers/pci/pcie/Kconfig"
740
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000741source "drivers/pci/Kconfig"
742
743source "drivers/pcmcia/Kconfig"
744
745source "drivers/pci/hotplug/Kconfig"
746
747endmenu
748
749menu "Advanced setup"
750 depends on PPC32
751
752config ADVANCED_OPTIONS
753 bool "Prompt for advanced kernel configuration options"
754 help
755 This option will enable prompting for a variety of advanced kernel
756 configuration options. These options can cause the kernel to not
757 work if they are set incorrectly, but can be used to optimize certain
758 aspects of kernel memory management.
759
760 Unless you know what you are doing, say N here.
761
762comment "Default settings for advanced configuration options are used"
763 depends on !ADVANCED_OPTIONS
764
765config HIGHMEM_START_BOOL
766 bool "Set high memory pool address"
767 depends on ADVANCED_OPTIONS && HIGHMEM
768 help
769 This option allows you to set the base address of the kernel virtual
770 area used to map high memory pages. This can be useful in
771 optimizing the layout of kernel virtual memory.
772
773 Say N here unless you know what you are doing.
774
775config HIGHMEM_START
776 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
777 default "0xfe000000"
778
779config LOWMEM_SIZE_BOOL
780 bool "Set maximum low memory"
781 depends on ADVANCED_OPTIONS
782 help
783 This option allows you to set the maximum amount of memory which
784 will be used as "low memory", that is, memory which the kernel can
785 access directly, without having to set up a kernel virtual mapping.
786 This can be useful in optimizing the layout of kernel virtual
787 memory.
788
789 Say N here unless you know what you are doing.
790
791config LOWMEM_SIZE
792 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
793 default "0x30000000"
794
795config KERNEL_START_BOOL
796 bool "Set custom kernel base address"
797 depends on ADVANCED_OPTIONS
798 help
799 This option allows you to set the kernel virtual address at which
800 the kernel will map low memory (the kernel image will be linked at
801 this address). This can be useful in optimizing the virtual memory
802 layout of the system.
803
804 Say N here unless you know what you are doing.
805
806config KERNEL_START
807 hex "Virtual address of kernel base" if KERNEL_START_BOOL
808 default "0xc0000000"
809
810config TASK_SIZE_BOOL
811 bool "Set custom user task size"
812 depends on ADVANCED_OPTIONS
813 help
814 This option allows you to set the amount of virtual address space
815 allocated to user tasks. This can be useful in optimizing the
816 virtual memory layout of the system.
817
818 Say N here unless you know what you are doing.
819
820config TASK_SIZE
821 hex "Size of user task space" if TASK_SIZE_BOOL
822 default "0x80000000"
823
824config CONSISTENT_START_BOOL
825 bool "Set custom consistent memory pool address"
826 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
827 help
828 This option allows you to set the base virtual address
Matt LaPlante4b3f6862006-10-03 22:21:02 +0200829 of the consistent memory pool. This pool of virtual
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000830 memory is used to make consistent memory allocations.
831
832config CONSISTENT_START
833 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
834 default "0xff100000" if NOT_COHERENT_CACHE
835
836config CONSISTENT_SIZE_BOOL
837 bool "Set custom consistent memory pool size"
838 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
839 help
Matt LaPlante4b3f6862006-10-03 22:21:02 +0200840 This option allows you to set the size of the
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000841 consistent memory pool. This pool of virtual memory
842 is used to make consistent memory allocations.
843
844config CONSISTENT_SIZE
845 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
846 default "0x00200000" if NOT_COHERENT_CACHE
847
848config BOOT_LOAD_BOOL
849 bool "Set the boot link/load address"
850 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
851 help
852 This option allows you to set the initial load address of the zImage
853 or zImage.initrd file. This can be useful if you are on a board
854 which has a small amount of memory.
855
856 Say N here unless you know what you are doing.
857
858config BOOT_LOAD
859 hex "Link/load address for booting" if BOOT_LOAD_BOOL
860 default "0x00400000" if 40x || 8xx || 8260
861 default "0x01000000" if 44x
862 default "0x00800000"
863
864config PIN_TLB
865 bool "Pinned Kernel TLBs (860 ONLY)"
866 depends on ADVANCED_OPTIONS && 8xx
867endmenu
868
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000869if PPC64
870config KERNEL_START
871 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +1000872 default "0xc000000000000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000873endif
874
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000875source "net/Kconfig"
876
877source "drivers/Kconfig"
878
879source "fs/Kconfig"
880
881# XXX source "arch/ppc/8xx_io/Kconfig"
882
883# XXX source "arch/ppc/8260_io/Kconfig"
884
Li Yang98658532006-10-03 23:10:46 -0500885source "arch/powerpc/sysdev/qe_lib/Kconfig"
886
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000887source "lib/Kconfig"
888
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800889menu "Instrumentation Support"
Kumar Gala98750262007-04-12 18:01:34 -0500890 depends on EXPERIMENTAL
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800891
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000892source "arch/powerpc/oprofile/Kconfig"
893
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800894config KPROBES
895 bool "Kprobes (EXPERIMENTAL)"
Kumar Gala82090032007-02-06 22:55:19 -0600896 depends on !BOOKE && !4xx && KALLSYMS && EXPERIMENTAL && MODULES
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800897 help
898 Kprobes allows you to trap at almost any kernel address and
899 execute a callback function. register_kprobe() establishes
900 a probepoint and specifies the callback. Kprobes is useful
901 for kernel debugging, non-intrusive instrumentation and testing.
902 If in doubt, say "N".
903endmenu
904
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000905source "arch/powerpc/Kconfig.debug"
906
907source "security/Kconfig"
908
909config KEYS_COMPAT
910 bool
911 depends on COMPAT && KEYS
912 default y
913
914source "crypto/Kconfig"