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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
14config PPC32
15 bool
16 default y if !PPC64
17
18config 64BIT
19 bool
20 default y if PPC64
21
22config PPC_MERGE
23 def_bool y
24
25config MMU
26 bool
27 default y
28
Paul Mackerras14cf11a2005-09-26 16:04:21 +100029config GENERIC_HARDIRQS
30 bool
31 default y
32
33config RWSEM_GENERIC_SPINLOCK
34 bool
35
36config RWSEM_XCHGADD_ALGORITHM
37 bool
38 default y
39
Akinobu Mitae779b2f2006-03-26 01:39:33 -080040config GENERIC_HWEIGHT
41 bool
42 default y
43
Paul Mackerras14cf11a2005-09-26 16:04:21 +100044config GENERIC_CALIBRATE_DELAY
45 bool
46 default y
47
48config PPC
49 bool
50 default y
51
52config EARLY_PRINTK
53 bool
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +110054 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +100055
56config COMPAT
57 bool
58 default y if PPC64
59
60config SYSVIPC_COMPAT
61 bool
62 depends on COMPAT && SYSVIPC
63 default y
64
65# All PPC32s use generic nvram driver through ppc_md
66config GENERIC_NVRAM
67 bool
68 default y if PPC32
69
70config SCHED_NO_NO_OMIT_FRAME_POINTER
71 bool
72 default y
73
74config ARCH_MAY_HAVE_PC_FDC
75 bool
76 default y
77
Kumar Gala08264cb2006-01-10 21:43:56 -060078config PPC_OF
79 def_bool y
80
81config PPC_UDBG_16550
82 bool
83 default n
84
Kumar Gala08264cb2006-01-10 21:43:56 -060085config GENERIC_TBSYNC
86 bool
87 default y if PPC32 && SMP
88 default n
89
Kumar Galaf4fc4a52006-01-16 10:53:22 -060090config DEFAULT_UIMAGE
91 bool
92 help
93 Used to allow a board to specify it wants a uImage built by default
94 default n
95
Paul Mackerras14cf11a2005-09-26 16:04:21 +100096menu "Processor support"
97choice
98 prompt "Processor Type"
99 depends on PPC32
100 default 6xx
101
Kumar Gala08264cb2006-01-10 21:43:56 -0600102config CLASSIC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000103 bool "6xx/7xx/74xx"
104 select PPC_FPU
Kumar Gala08264cb2006-01-10 21:43:56 -0600105 select 6xx
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000106 help
107 There are four families of PowerPC chips supported. The more common
108 types (601, 603, 604, 740, 750, 7400), the Motorola embedded
109 versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
110 embedded versions (403 and 405) and the high end 64 bit Power
111 processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
112
113 Unless you are building a kernel for one of the embedded processor
114 systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx.
115 Note that the kernel runs in 32-bit mode even on 64-bit chips.
116
117config PPC_52xx
118 bool "Freescale 52xx"
Kumar Gala08264cb2006-01-10 21:43:56 -0600119 select 6xx
120 select PPC_FPU
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000121
122config PPC_82xx
123 bool "Freescale 82xx"
Kumar Gala08264cb2006-01-10 21:43:56 -0600124 select 6xx
125 select PPC_FPU
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000126
127config PPC_83xx
128 bool "Freescale 83xx"
Kumar Gala08264cb2006-01-10 21:43:56 -0600129 select 6xx
130 select FSL_SOC
131 select 83xx
132 select PPC_FPU
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000133
Becky Bruce63dafe52006-01-14 16:57:39 -0600134config PPC_85xx
135 bool "Freescale 85xx"
136 select E500
137 select FSL_SOC
138 select 85xx
139
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000140config 40x
141 bool "AMCC 40x"
142
143config 44x
144 bool "AMCC 44x"
145
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000146config 8xx
147 bool "Freescale 8xx"
148
149config E200
150 bool "Freescale e200"
151
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000152endchoice
153
154config POWER4_ONLY
155 bool "Optimize for POWER4"
Paul Mackerras187a0062005-10-06 12:49:05 +1000156 depends on PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000157 default n
158 ---help---
159 Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
160 The resulting binary will not work on POWER3 or RS64 processors
161 when compiled with binutils 2.15 or later.
162
163config POWER3
164 bool
Paul Mackerras187a0062005-10-06 12:49:05 +1000165 depends on PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000166 default y if !POWER4_ONLY
167
168config POWER4
Paul Mackerras187a0062005-10-06 12:49:05 +1000169 depends on PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000170 def_bool y
171
Kumar Gala08264cb2006-01-10 21:43:56 -0600172config 6xx
173 bool
174
175# this is temp to handle compat with arch=ppc
176config 83xx
177 bool
178
Becky Bruce63dafe52006-01-14 16:57:39 -0600179# this is temp to handle compat with arch=ppc
180config 85xx
181 bool
182
183config E500
184 bool
185
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000186config PPC_FPU
Paul Mackerras187a0062005-10-06 12:49:05 +1000187 bool
188 default y if PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000189
190config BOOKE
191 bool
192 depends on E200 || E500
193 default y
194
195config FSL_BOOKE
196 bool
197 depends on E200 || E500
198 default y
199
200config PTE_64BIT
201 bool
202 depends on 44x || E500
203 default y if 44x
204 default y if E500 && PHYS_64BIT
205
206config PHYS_64BIT
207 bool 'Large physical address support' if E500
208 depends on 44x || E500
209 default y if 44x
210 ---help---
211 This option enables kernel support for larger than 32-bit physical
212 addresses. This features is not be available on all e500 cores.
213
214 If in doubt, say N here.
215
216config ALTIVEC
217 bool "AltiVec Support"
Kumar Gala08264cb2006-01-10 21:43:56 -0600218 depends on CLASSIC32 || POWER4
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000219 ---help---
220 This option enables kernel support for the Altivec extensions to the
221 PowerPC processor. The kernel currently supports saving and restoring
222 altivec registers, and turning on the 'altivec enable' bit so user
223 processes can execute altivec instructions.
224
225 This option is only usefully if you have a processor that supports
226 altivec (G4, otherwise known as 74xx series), but does not have
227 any affect on a non-altivec cpu (it does, however add code to the
228 kernel).
229
230 If in doubt, say Y here.
231
232config SPE
233 bool "SPE Support"
234 depends on E200 || E500
Becky Bruce63dafe52006-01-14 16:57:39 -0600235 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000236 ---help---
237 This option enables kernel support for the Signal Processing
238 Extensions (SPE) to the PowerPC processor. The kernel currently
239 supports saving and restoring SPE registers, and turning on the
240 'spe enable' bit so user processes can execute SPE instructions.
241
242 This option is only useful if you have a processor that supports
243 SPE (e500, otherwise known as 85xx series), but does not have any
244 effect on a non-spe cpu (it does, however add code to the kernel).
245
246 If in doubt, say Y here.
247
248config PPC_STD_MMU
249 bool
250 depends on 6xx || POWER3 || POWER4 || PPC64
251 default y
252
253config PPC_STD_MMU_32
254 def_bool y
255 depends on PPC_STD_MMU && PPC32
256
Paul Mackerrasc6622f62006-02-24 10:06:59 +1100257config VIRT_CPU_ACCOUNTING
258 bool "Deterministic task and CPU time accounting"
259 depends on PPC64
260 default y
261 help
262 Select this option to enable more accurate task and CPU time
263 accounting. This is done by reading a CPU counter on each
264 kernel entry and exit and on transitions within the kernel
265 between system, softirq and hardirq state, so there is a
266 small performance impact. This also enables accounting of
267 stolen time on logically-partitioned systems running on
268 IBM POWER5-based machines.
269
270 If in doubt, say Y here.
271
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000272config SMP
273 depends on PPC_STD_MMU
274 bool "Symmetric multi-processing support"
275 ---help---
276 This enables support for systems with more than one CPU. If you have
277 a system with only one CPU, say N. If you have a system with more
278 than one CPU, say Y. Note that the kernel does not currently
279 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
280 since they have inadequate hardware support for multiprocessor
281 operation.
282
283 If you say N here, the kernel will run on single and multiprocessor
284 machines, but will use only one CPU of a multiprocessor machine. If
285 you say Y here, the kernel will run on single-processor machines.
286 On a single-processor machine, the kernel will run faster if you say
287 N here.
288
289 If you don't know what to do here, say N.
290
291config NR_CPUS
Olaf Heringe8a167a2005-12-01 21:10:10 +0100292 int "Maximum number of CPUs (2-128)"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000293 range 2 128
294 depends on SMP
295 default "32" if PPC64
296 default "4"
297
298config NOT_COHERENT_CACHE
299 bool
300 depends on 4xx || 8xx || E200
301 default y
302endmenu
303
304source "init/Kconfig"
305
306menu "Platform support"
Kumar Gala08264cb2006-01-10 21:43:56 -0600307 depends on PPC64 || CLASSIC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000308
309choice
310 prompt "Machine type"
311 default PPC_MULTIPLATFORM
312
313config PPC_MULTIPLATFORM
314 bool "Generic desktop/server/laptop"
315 help
316 Select this option if configuring for an IBM pSeries or
317 RS/6000 machine, an Apple machine, or a PReP, CHRP,
318 Maple or Cell-based machine.
319
320config PPC_ISERIES
321 bool "IBM Legacy iSeries"
322 depends on PPC64
323
324config EMBEDDED6xx
325 bool "Embedded 6xx/7xx/7xxx-based board"
Paul Mackerras5be396b2005-11-14 17:31:55 +1100326 depends on PPC32 && BROKEN
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000327
328config APUS
329 bool "Amiga-APUS"
330 depends on PPC32 && BROKEN
331 help
332 Select APUS if configuring for a PowerUP Amiga.
333 More information is available at:
334 <http://linux-apus.sourceforge.net/>.
335endchoice
336
337config PPC_PSERIES
338 depends on PPC_MULTIPLATFORM && PPC64
339 bool " IBM pSeries & new (POWER5-based) iSeries"
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000340 select PPC_I8259
Paul Mackerras033ef332005-10-26 17:05:24 +1000341 select PPC_RTAS
342 select RTAS_ERROR_LOGGING
Paul Mackerras13b8a272006-01-10 16:19:05 +1100343 select PPC_UDBG_16550
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000344 default y
345
346config PPC_CHRP
347 bool " Common Hardware Reference Platform (CHRP) based machines"
348 depends on PPC_MULTIPLATFORM && PPC32
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000349 select PPC_I8259
Paul Mackerras25635c72005-10-26 16:36:55 +1000350 select PPC_INDIRECT_PCI
Paul Mackerras033ef332005-10-26 17:05:24 +1000351 select PPC_RTAS
Paul Mackerras830825d2005-10-26 17:16:38 +1000352 select PPC_MPC106
Paul Mackerras13b8a272006-01-10 16:19:05 +1100353 select PPC_UDBG_16550
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000354 default y
355
356config PPC_PMAC
357 bool " Apple PowerMac based machines"
358 depends on PPC_MULTIPLATFORM
Paul Mackerras25635c72005-10-26 16:36:55 +1000359 select PPC_INDIRECT_PCI if PPC32
Paul Mackerrasb6a4ce52005-10-26 22:54:17 +1000360 select PPC_MPC106 if PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000361 default y
362
363config PPC_PMAC64
364 bool
365 depends on PPC_PMAC && POWER4
Paul Mackerras35499c02005-10-22 16:02:39 +1000366 select U3_DART
Benjamin Herrenschmidt1beb6a72005-12-14 13:10:10 +1100367 select MPIC_BROKEN_U3
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100368 select GENERIC_TBSYNC
Paul Mackerrasf39224a2006-04-18 21:49:11 +1000369 select PPC_970_NAP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000370 default y
371
372config PPC_PREP
373 bool " PowerPC Reference Platform (PReP) based machines"
Paul Mackerras5be396b2005-11-14 17:31:55 +1100374 depends on PPC_MULTIPLATFORM && PPC32 && BROKEN
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000375 select PPC_I8259
Paul Mackerras25635c72005-10-26 16:36:55 +1000376 select PPC_INDIRECT_PCI
Paul Mackerras13b8a272006-01-10 16:19:05 +1100377 select PPC_UDBG_16550
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000378 default y
379
380config PPC_MAPLE
381 depends on PPC_MULTIPLATFORM && PPC64
382 bool " Maple 970FX Evaluation Board"
383 select U3_DART
384 select MPIC_BROKEN_U3
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100385 select GENERIC_TBSYNC
Paul Mackerras13b8a272006-01-10 16:19:05 +1100386 select PPC_UDBG_16550
Paul Mackerrasf39224a2006-04-18 21:49:11 +1000387 select PPC_970_NAP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000388 default n
389 help
390 This option enables support for the Maple 970FX Evaluation Board.
391 For more informations, refer to <http://www.970eval.com>
392
Arnd Bergmannf3f66f52005-10-31 20:08:37 -0500393config PPC_CELL
394 bool " Cell Broadband Processor Architecture"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000395 depends on PPC_MULTIPLATFORM && PPC64
Paul Mackerras033ef332005-10-26 17:05:24 +1000396 select PPC_RTAS
Arnd Bergmannedf03c12005-10-31 20:08:40 -0500397 select MMIO_NVRAM
Paul Mackerras13b8a272006-01-10 16:19:05 +1100398 select PPC_UDBG_16550
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000399
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000400config XICS
401 depends on PPC_PSERIES
402 bool
403 default y
404
405config U3_DART
406 bool
407 depends on PPC_MULTIPLATFORM && PPC64
408 default n
409
410config MPIC
Paul Mackerrasbbd0abd2005-10-26 21:45:56 +1000411 depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000412 bool
413 default y
414
Paul Mackerras033ef332005-10-26 17:05:24 +1000415config PPC_RTAS
416 bool
417 default n
418
419config RTAS_ERROR_LOGGING
420 bool
421 depends on PPC_RTAS
422 default n
423
Paul Mackerrasf4fcbbe2005-11-03 14:41:19 +1100424config RTAS_PROC
425 bool "Proc interface to RTAS"
Arnd Bergmanne9add2e2005-10-31 20:08:39 -0500426 depends on PPC_RTAS
Paul Mackerrasf4fcbbe2005-11-03 14:41:19 +1100427 default y
428
429config RTAS_FLASH
430 tristate "Firmware flash interface"
431 depends on PPC64 && RTAS_PROC
Arnd Bergmanne9add2e2005-10-31 20:08:39 -0500432
Arnd Bergmannedf03c12005-10-31 20:08:40 -0500433config MMIO_NVRAM
434 bool
435 default n
436
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000437config MPIC_BROKEN_U3
438 bool
439 depends on PPC_MAPLE
440 default y
441
Arnd Bergmannf3f66f52005-10-31 20:08:37 -0500442config CELL_IIC
443 depends on PPC_CELL
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000444 bool
445 default y
446
447config IBMVIO
448 depends on PPC_PSERIES || PPC_ISERIES
449 bool
450 default y
451
Heiko J Schickd7a30102005-11-16 08:56:43 +0100452config IBMEBUS
453 depends on PPC_PSERIES
454 bool "Support for GX bus based adapters"
Heiko J Schickd7a30102005-11-16 08:56:43 +0100455 help
456 Bus device driver for GX bus based adapters.
457
Paul Mackerras830825d2005-10-26 17:16:38 +1000458config PPC_MPC106
459 bool
460 default n
461
Paul Mackerrasf39224a2006-04-18 21:49:11 +1000462config PPC_970_NAP
463 bool
464 default n
465
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000466source "drivers/cpufreq/Kconfig"
467
468config CPU_FREQ_PMAC
469 bool "Support for Apple PowerBooks"
470 depends on CPU_FREQ && ADB_PMU && PPC32
471 select CPU_FREQ_TABLE
472 help
473 This adds support for frequency switching on Apple PowerBooks,
474 this currently includes some models of iBook & Titanium
475 PowerBook.
476
Benjamin Herrenschmidt43501472005-11-07 14:27:33 +1100477config CPU_FREQ_PMAC64
478 bool "Support for some Apple G5s"
479 depends on CPU_FREQ && PMAC_SMU && PPC64
480 select CPU_FREQ_TABLE
481 help
482 This adds support for frequency switching on Apple iMac G5,
483 and some of the more recent desktop G5 machines as well.
484
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000485config PPC601_SYNC_FIX
486 bool "Workarounds for PPC601 bugs"
487 depends on 6xx && (PPC_PREP || PPC_PMAC)
488 help
489 Some versions of the PPC601 (the first PowerPC chip) have bugs which
490 mean that extra synchronization instructions are required near
491 certain instructions, typically those that make major changes to the
492 CPU state. These extra instructions reduce performance slightly.
493 If you say N here, these extra instructions will not be included,
494 resulting in a kernel which will run faster but may not run at all
495 on some systems with the PPC601 chip.
496
497 If in doubt, say Y here.
498
499config TAU
Paul Mackerras9b781722006-03-27 19:15:26 +1100500 bool "On-chip CPU temperature sensor support"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000501 depends on 6xx
502 help
503 G3 and G4 processors have an on-chip temperature sensor called the
504 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
505 temperature within 2-4 degrees Celsius. This option shows the current
506 on-die temperature in /proc/cpuinfo if the cpu supports it.
507
508 Unfortunately, on some chip revisions, this sensor is very inaccurate
Paul Mackerras9b781722006-03-27 19:15:26 +1100509 and in many cases, does not work at all, so don't assume the cpu
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000510 temp is actually what /proc/cpuinfo says it is.
511
512config TAU_INT
513 bool "Interrupt driven TAU driver (DANGEROUS)"
514 depends on TAU
515 ---help---
516 The TAU supports an interrupt driven mode which causes an interrupt
517 whenever the temperature goes out of range. This is the fastest way
518 to get notified the temp has exceeded a range. With this option off,
519 a timer is used to re-check the temperature periodically.
520
521 However, on some cpus it appears that the TAU interrupt hardware
522 is buggy and can cause a situation which would lead unexplained hard
523 lockups.
524
525 Unless you are extending the TAU driver, or enjoy kernel/hardware
526 debugging, leave this option off.
527
528config TAU_AVERAGE
529 bool "Average high and low temp"
530 depends on TAU
531 ---help---
532 The TAU hardware can compare the temperature to an upper and lower
533 bound. The default behavior is to show both the upper and lower
534 bound in /proc/cpuinfo. If the range is large, the temperature is
535 either changing a lot, or the TAU hardware is broken (likely on some
536 G4's). If the range is small (around 4 degrees), the temperature is
537 relatively stable. If you say Y here, a single temperature value,
538 halfway between the upper and lower bounds, will be reported in
539 /proc/cpuinfo.
540
541 If in doubt, say N here.
542endmenu
543
544source arch/powerpc/platforms/embedded6xx/Kconfig
545source arch/powerpc/platforms/4xx/Kconfig
Kumar Gala08264cb2006-01-10 21:43:56 -0600546source arch/powerpc/platforms/83xx/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000547source arch/powerpc/platforms/85xx/Kconfig
548source arch/powerpc/platforms/8xx/Kconfig
Arnd Bergmann67207b92005-11-15 15:53:48 -0500549source arch/powerpc/platforms/cell/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000550
551menu "Kernel options"
552
553config HIGHMEM
554 bool "High memory support"
555 depends on PPC32
556
557source kernel/Kconfig.hz
558source kernel/Kconfig.preempt
559source "fs/Kconfig.binfmt"
560
561# We optimistically allocate largepages from the VM, so make the limit
562# large enough (16MB). This badly named config option is actually
563# max order + 1
564config FORCE_MAX_ZONEORDER
565 int
566 depends on PPC64
Mike Kravetz02864862005-11-07 13:48:59 -0800567 default "9" if PPC_64K_PAGES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000568 default "13"
569
570config MATH_EMULATION
571 bool "Math emulation"
572 depends on 4xx || 8xx || E200 || E500
573 ---help---
574 Some PowerPC chips designed for embedded applications do not have
575 a floating-point unit and therefore do not implement the
576 floating-point instructions in the PowerPC instruction set. If you
577 say Y here, the kernel will include code to emulate a floating-point
578 unit, which will allow programs that use floating-point
579 instructions to run.
580
581config IOMMU_VMERGE
582 bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
583 depends on EXPERIMENTAL && PPC64
584 default n
585 help
586 Cause IO segments sent to a device for DMA to be merged virtually
587 by the IOMMU when they happen to have been allocated contiguously.
588 This doesn't add pressure to the IOMMU allocator. However, some
589 drivers don't support getting large merged segments coming back
590 from *_map_sg(). Say Y if you know the drivers you are using are
591 properly handling this case.
592
593config HOTPLUG_CPU
594 bool "Support for enabling/disabling CPUs"
595 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
596 ---help---
597 Say Y here to be able to disable and re-enable individual
598 CPUs at runtime on SMP machines.
599
600 Say N if you are unsure.
601
602config KEXEC
603 bool "kexec system call (EXPERIMENTAL)"
604 depends on PPC_MULTIPLATFORM && EXPERIMENTAL
605 help
606 kexec is a system call that implements the ability to shutdown your
607 current kernel, and to start another kernel. It is like a reboot
608 but it is indepedent of the system firmware. And like a reboot
609 you can start any kernel with it, not just Linux.
610
611 The name comes from the similiarity to the exec system call.
612
613 It is an ongoing process to be certain the hardware in a machine
614 is properly shutdown, so do not be surprised if this code does not
615 initially work for you. It may help to enable device hotplugging
616 support. As of this writing the exact hardware interface is
617 strongly in flux, so no good recommendation can be made.
618
Haren Mynenie8625d462006-01-14 13:48:25 -0800619config CRASH_DUMP
Michael Ellermancd9c99d2006-03-10 15:01:08 +1100620 bool "Build a kdump crash kernel (EXPERIMENTAL)"
Haren Mynenie8625d462006-01-14 13:48:25 -0800621 depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL
622 help
623 Build a kernel suitable for use as a kdump capture kernel.
624 The kernel will be linked at a different address than normal, and
625 so can only be used for Kdump.
626
627 Don't change this unless you know what you are doing.
628
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000629config EMBEDDEDBOOT
630 bool
631 depends on 8xx || 8260
632 default y
633
634config PC_KEYBOARD
635 bool "PC PS/2 style Keyboard"
636 depends on 4xx || CPM2
637
638config PPCBUG_NVRAM
639 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
640 default y if PPC_PREP
641
642config IRQ_ALL_CPUS
643 bool "Distribute interrupts on all CPUs by default"
644 depends on SMP && !MV64360
645 help
646 This option gives the kernel permission to distribute IRQs across
647 multiple CPUs. Saying N here will route all IRQs to the first
648 CPU. Generally saying Y is safe, although some problems have been
649 reported with SMP Power Macintoshes with this option enabled.
650
651source "arch/powerpc/platforms/pseries/Kconfig"
652
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700653config NUMA
654 bool "NUMA support"
655 depends on PPC64
656 default y if SMP && PPC_PSERIES
657
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000658config ARCH_SELECT_MEMORY_MODEL
659 def_bool y
660 depends on PPC64
661
662config ARCH_FLATMEM_ENABLE
Andy Whitcroft9100b202005-11-29 19:20:55 +0000663 def_bool y
664 depends on (PPC64 && !NUMA) || PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000665
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000666config ARCH_SPARSEMEM_ENABLE
667 def_bool y
Andy Whitcroft9100b202005-11-29 19:20:55 +0000668 depends on PPC64
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100669
670config ARCH_SPARSEMEM_DEFAULT
671 def_bool y
672 depends on SMP && PPC_PSERIES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000673
674source "mm/Kconfig"
675
676config HAVE_ARCH_EARLY_PFN_TO_NID
677 def_bool y
678 depends on NEED_MULTIPLE_NODES
679
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800680config ARCH_MEMORY_PROBE
681 def_bool y
682 depends on MEMORY_HOTPLUG
683
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100684config PPC_64K_PAGES
685 bool "64k page size"
Benjamin Herrenschmidt863c84b2005-11-07 00:57:58 -0800686 depends on PPC64
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100687 help
688 This option changes the kernel logical page size to 64k. On machines
689 without processor support for 64k pages, the kernel will simulate
690 them by loading each individual 4k page on demand transparently,
691 while on hardware with such support, it will be used to map
692 normal application pages.
693
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000694config SCHED_SMT
695 bool "SMT (Hyperthreading) scheduler support"
696 depends on PPC64 && SMP
697 default off
698 help
699 SMT scheduler support improves the CPU scheduler's decision making
700 when dealing with POWER5 cpus at a cost of slightly increased
701 overhead in some places. If unsure say N here.
702
703config PROC_DEVICETREE
Paul Mackerras5f296752005-10-17 20:14:59 +1000704 bool "Support for device tree in /proc"
705 depends on PROC_FS
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000706 help
707 This option adds a device-tree directory under /proc which contains
708 an image of the device tree that the kernel copies from Open
Paul Mackerras5f296752005-10-17 20:14:59 +1000709 Firmware or other boot firmware. If unsure, say Y here.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000710
711source "arch/powerpc/platforms/prep/Kconfig"
712
713config CMDLINE_BOOL
714 bool "Default bootloader kernel arguments"
715 depends on !PPC_ISERIES
716
717config CMDLINE
718 string "Initial kernel command string"
719 depends on CMDLINE_BOOL
720 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
721 help
722 On some platforms, there is currently no way for the boot loader to
723 pass arguments to the kernel. For these platforms, you can supply
724 some command-line options at build time by entering them here. In
725 most cases you will need to specify the root device here.
726
727if !44x || BROKEN
728source kernel/power/Kconfig
729endif
730
731config SECCOMP
732 bool "Enable seccomp to safely compute untrusted bytecode"
733 depends on PROC_FS
734 default y
735 help
736 This kernel feature is useful for number crunching applications
737 that may need to compute untrusted bytecode during their
738 execution. By using pipes or other transports made available to
739 the process as file descriptors supporting the read/write
740 syscalls, it's possible to isolate those applications in
741 their own address space using seccomp. Once seccomp is
742 enabled via /proc/<pid>/seccomp, it cannot be disabled
743 and the task is only allowed to execute a few safe syscalls
744 defined by each seccomp mode.
745
746 If unsure, say Y. Only embedded should say N here.
747
748endmenu
749
750config ISA_DMA_API
751 bool
752 default y
753
754menu "Bus options"
755
756config ISA
757 bool "Support for ISA-bus hardware"
758 depends on PPC_PREP || PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000759 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000760 help
761 Find out whether you have ISA slots on your motherboard. ISA is the
762 name of a bus system, i.e. the way the CPU talks to the other stuff
763 inside your box. If you have an Apple machine, say N here; if you
764 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
765 you have an embedded board, consult your board documentation.
766
767config GENERIC_ISA_DMA
768 bool
769 depends on PPC64 || POWER4 || 6xx && !CPM2
770 default y
771
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000772config PPC_I8259
773 bool
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000774 default n
775
Paul Mackerras25635c72005-10-26 16:36:55 +1000776config PPC_INDIRECT_PCI
777 bool
778 depends on PCI
Becky Bruce63dafe52006-01-14 16:57:39 -0600779 default y if 40x || 44x
Paul Mackerras25635c72005-10-26 16:36:55 +1000780 default n
781
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000782config EISA
783 bool
784
785config SBUS
786 bool
787
Kumar Gala08264cb2006-01-10 21:43:56 -0600788config FSL_SOC
789 bool
790
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000791# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
792config MCA
793 bool
794
795config PCI
Becky Bruce63dafe52006-01-14 16:57:39 -0600796 bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES)
797 default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx && !PPC_85xx
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000798 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
799 default PCI_QSPAN if !4xx && !CPM2 && 8xx
800 help
801 Find out whether your system includes a PCI bus. PCI is the name of
802 a bus system, i.e. the way the CPU talks to the other stuff inside
803 your box. If you say Y here, the kernel will include drivers and
804 infrastructure code to support PCI bus devices.
805
806config PCI_DOMAINS
807 bool
808 default PCI
809
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000810config PCI_QSPAN
811 bool "QSpan PCI"
812 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000813 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000814 help
815 Say Y here if you have a system based on a Motorola 8xx-series
816 embedded processor with a QSPAN PCI interface, otherwise say N.
817
818config PCI_8260
819 bool
820 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000821 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000822 default y
823
824config 8260_PCI9
825 bool " Enable workaround for MPC826x erratum PCI 9"
826 depends on PCI_8260 && !ADS8272
827 default y
828
829choice
830 prompt " IDMA channel for PCI 9 workaround"
831 depends on 8260_PCI9
832
833config 8260_PCI9_IDMA1
834 bool "IDMA1"
835
836config 8260_PCI9_IDMA2
837 bool "IDMA2"
838
839config 8260_PCI9_IDMA3
840 bool "IDMA3"
841
842config 8260_PCI9_IDMA4
843 bool "IDMA4"
844
845endchoice
846
847source "drivers/pci/Kconfig"
848
849source "drivers/pcmcia/Kconfig"
850
851source "drivers/pci/hotplug/Kconfig"
852
853endmenu
854
855menu "Advanced setup"
856 depends on PPC32
857
858config ADVANCED_OPTIONS
859 bool "Prompt for advanced kernel configuration options"
860 help
861 This option will enable prompting for a variety of advanced kernel
862 configuration options. These options can cause the kernel to not
863 work if they are set incorrectly, but can be used to optimize certain
864 aspects of kernel memory management.
865
866 Unless you know what you are doing, say N here.
867
868comment "Default settings for advanced configuration options are used"
869 depends on !ADVANCED_OPTIONS
870
871config HIGHMEM_START_BOOL
872 bool "Set high memory pool address"
873 depends on ADVANCED_OPTIONS && HIGHMEM
874 help
875 This option allows you to set the base address of the kernel virtual
876 area used to map high memory pages. This can be useful in
877 optimizing the layout of kernel virtual memory.
878
879 Say N here unless you know what you are doing.
880
881config HIGHMEM_START
882 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
883 default "0xfe000000"
884
885config LOWMEM_SIZE_BOOL
886 bool "Set maximum low memory"
887 depends on ADVANCED_OPTIONS
888 help
889 This option allows you to set the maximum amount of memory which
890 will be used as "low memory", that is, memory which the kernel can
891 access directly, without having to set up a kernel virtual mapping.
892 This can be useful in optimizing the layout of kernel virtual
893 memory.
894
895 Say N here unless you know what you are doing.
896
897config LOWMEM_SIZE
898 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
899 default "0x30000000"
900
901config KERNEL_START_BOOL
902 bool "Set custom kernel base address"
903 depends on ADVANCED_OPTIONS
904 help
905 This option allows you to set the kernel virtual address at which
906 the kernel will map low memory (the kernel image will be linked at
907 this address). This can be useful in optimizing the virtual memory
908 layout of the system.
909
910 Say N here unless you know what you are doing.
911
912config KERNEL_START
913 hex "Virtual address of kernel base" if KERNEL_START_BOOL
914 default "0xc0000000"
915
916config TASK_SIZE_BOOL
917 bool "Set custom user task size"
918 depends on ADVANCED_OPTIONS
919 help
920 This option allows you to set the amount of virtual address space
921 allocated to user tasks. This can be useful in optimizing the
922 virtual memory layout of the system.
923
924 Say N here unless you know what you are doing.
925
926config TASK_SIZE
927 hex "Size of user task space" if TASK_SIZE_BOOL
928 default "0x80000000"
929
930config CONSISTENT_START_BOOL
931 bool "Set custom consistent memory pool address"
932 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
933 help
934 This option allows you to set the base virtual address
935 of the the consistent memory pool. This pool of virtual
936 memory is used to make consistent memory allocations.
937
938config CONSISTENT_START
939 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
940 default "0xff100000" if NOT_COHERENT_CACHE
941
942config CONSISTENT_SIZE_BOOL
943 bool "Set custom consistent memory pool size"
944 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
945 help
946 This option allows you to set the size of the the
947 consistent memory pool. This pool of virtual memory
948 is used to make consistent memory allocations.
949
950config CONSISTENT_SIZE
951 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
952 default "0x00200000" if NOT_COHERENT_CACHE
953
954config BOOT_LOAD_BOOL
955 bool "Set the boot link/load address"
956 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
957 help
958 This option allows you to set the initial load address of the zImage
959 or zImage.initrd file. This can be useful if you are on a board
960 which has a small amount of memory.
961
962 Say N here unless you know what you are doing.
963
964config BOOT_LOAD
965 hex "Link/load address for booting" if BOOT_LOAD_BOOL
966 default "0x00400000" if 40x || 8xx || 8260
967 default "0x01000000" if 44x
968 default "0x00800000"
969
970config PIN_TLB
971 bool "Pinned Kernel TLBs (860 ONLY)"
972 depends on ADVANCED_OPTIONS && 8xx
973endmenu
974
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000975if PPC64
976config KERNEL_START
977 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +1000978 default "0xc000000000000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000979endif
980
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000981source "net/Kconfig"
982
983source "drivers/Kconfig"
984
985source "fs/Kconfig"
986
987# XXX source "arch/ppc/8xx_io/Kconfig"
988
989# XXX source "arch/ppc/8260_io/Kconfig"
990
991source "arch/powerpc/platforms/iseries/Kconfig"
992
993source "lib/Kconfig"
994
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800995menu "Instrumentation Support"
996 depends on EXPERIMENTAL
997
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000998source "arch/powerpc/oprofile/Kconfig"
999
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -08001000config KPROBES
1001 bool "Kprobes (EXPERIMENTAL)"
Linus Torvaldsadd2b6f2006-02-26 20:24:40 -08001002 depends on PPC64 && EXPERIMENTAL && MODULES
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -08001003 help
1004 Kprobes allows you to trap at almost any kernel address and
1005 execute a callback function. register_kprobe() establishes
1006 a probepoint and specifies the callback. Kprobes is useful
1007 for kernel debugging, non-intrusive instrumentation and testing.
1008 If in doubt, say "N".
1009endmenu
1010
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001011source "arch/powerpc/Kconfig.debug"
1012
1013source "security/Kconfig"
1014
1015config KEYS_COMPAT
1016 bool
1017 depends on COMPAT && KEYS
1018 default y
1019
1020source "crypto/Kconfig"