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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 Mackerras14cf11a2005-09-26 16:04:21 +1000369 default y
370
371config PPC_PREP
372 bool " PowerPC Reference Platform (PReP) based machines"
Paul Mackerras5be396b2005-11-14 17:31:55 +1100373 depends on PPC_MULTIPLATFORM && PPC32 && BROKEN
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000374 select PPC_I8259
Paul Mackerras25635c72005-10-26 16:36:55 +1000375 select PPC_INDIRECT_PCI
Paul Mackerras13b8a272006-01-10 16:19:05 +1100376 select PPC_UDBG_16550
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000377 default y
378
379config PPC_MAPLE
380 depends on PPC_MULTIPLATFORM && PPC64
381 bool " Maple 970FX Evaluation Board"
382 select U3_DART
383 select MPIC_BROKEN_U3
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100384 select GENERIC_TBSYNC
Paul Mackerras13b8a272006-01-10 16:19:05 +1100385 select PPC_UDBG_16550
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000386 default n
387 help
388 This option enables support for the Maple 970FX Evaluation Board.
389 For more informations, refer to <http://www.970eval.com>
390
Arnd Bergmannf3f66f52005-10-31 20:08:37 -0500391config PPC_CELL
392 bool " Cell Broadband Processor Architecture"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000393 depends on PPC_MULTIPLATFORM && PPC64
Paul Mackerras033ef332005-10-26 17:05:24 +1000394 select PPC_RTAS
Arnd Bergmannedf03c12005-10-31 20:08:40 -0500395 select MMIO_NVRAM
Paul Mackerras13b8a272006-01-10 16:19:05 +1100396 select PPC_UDBG_16550
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000397
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000398config XICS
399 depends on PPC_PSERIES
400 bool
401 default y
402
403config U3_DART
404 bool
405 depends on PPC_MULTIPLATFORM && PPC64
406 default n
407
408config MPIC
Paul Mackerrasbbd0abd2005-10-26 21:45:56 +1000409 depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000410 bool
411 default y
412
Paul Mackerras033ef332005-10-26 17:05:24 +1000413config PPC_RTAS
414 bool
415 default n
416
417config RTAS_ERROR_LOGGING
418 bool
419 depends on PPC_RTAS
420 default n
421
Paul Mackerrasf4fcbbe2005-11-03 14:41:19 +1100422config RTAS_PROC
423 bool "Proc interface to RTAS"
Arnd Bergmanne9add2e2005-10-31 20:08:39 -0500424 depends on PPC_RTAS
Paul Mackerrasf4fcbbe2005-11-03 14:41:19 +1100425 default y
426
427config RTAS_FLASH
428 tristate "Firmware flash interface"
429 depends on PPC64 && RTAS_PROC
Arnd Bergmanne9add2e2005-10-31 20:08:39 -0500430
Arnd Bergmannedf03c12005-10-31 20:08:40 -0500431config MMIO_NVRAM
432 bool
433 default n
434
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000435config MPIC_BROKEN_U3
436 bool
437 depends on PPC_MAPLE
438 default y
439
Arnd Bergmannf3f66f52005-10-31 20:08:37 -0500440config CELL_IIC
441 depends on PPC_CELL
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000442 bool
443 default y
444
445config IBMVIO
446 depends on PPC_PSERIES || PPC_ISERIES
447 bool
448 default y
449
Heiko J Schickd7a30102005-11-16 08:56:43 +0100450config IBMEBUS
451 depends on PPC_PSERIES
452 bool "Support for GX bus based adapters"
Heiko J Schickd7a30102005-11-16 08:56:43 +0100453 help
454 Bus device driver for GX bus based adapters.
455
Paul Mackerras830825d2005-10-26 17:16:38 +1000456config PPC_MPC106
457 bool
458 default n
459
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000460source "drivers/cpufreq/Kconfig"
461
462config CPU_FREQ_PMAC
463 bool "Support for Apple PowerBooks"
464 depends on CPU_FREQ && ADB_PMU && PPC32
465 select CPU_FREQ_TABLE
466 help
467 This adds support for frequency switching on Apple PowerBooks,
468 this currently includes some models of iBook & Titanium
469 PowerBook.
470
Benjamin Herrenschmidt43501472005-11-07 14:27:33 +1100471config CPU_FREQ_PMAC64
472 bool "Support for some Apple G5s"
473 depends on CPU_FREQ && PMAC_SMU && PPC64
474 select CPU_FREQ_TABLE
475 help
476 This adds support for frequency switching on Apple iMac G5,
477 and some of the more recent desktop G5 machines as well.
478
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000479config PPC601_SYNC_FIX
480 bool "Workarounds for PPC601 bugs"
481 depends on 6xx && (PPC_PREP || PPC_PMAC)
482 help
483 Some versions of the PPC601 (the first PowerPC chip) have bugs which
484 mean that extra synchronization instructions are required near
485 certain instructions, typically those that make major changes to the
486 CPU state. These extra instructions reduce performance slightly.
487 If you say N here, these extra instructions will not be included,
488 resulting in a kernel which will run faster but may not run at all
489 on some systems with the PPC601 chip.
490
491 If in doubt, say Y here.
492
493config TAU
Paul Mackerras9b781722006-03-27 19:15:26 +1100494 bool "On-chip CPU temperature sensor support"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000495 depends on 6xx
496 help
497 G3 and G4 processors have an on-chip temperature sensor called the
498 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
499 temperature within 2-4 degrees Celsius. This option shows the current
500 on-die temperature in /proc/cpuinfo if the cpu supports it.
501
502 Unfortunately, on some chip revisions, this sensor is very inaccurate
Paul Mackerras9b781722006-03-27 19:15:26 +1100503 and in many cases, does not work at all, so don't assume the cpu
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000504 temp is actually what /proc/cpuinfo says it is.
505
506config TAU_INT
507 bool "Interrupt driven TAU driver (DANGEROUS)"
508 depends on TAU
509 ---help---
510 The TAU supports an interrupt driven mode which causes an interrupt
511 whenever the temperature goes out of range. This is the fastest way
512 to get notified the temp has exceeded a range. With this option off,
513 a timer is used to re-check the temperature periodically.
514
515 However, on some cpus it appears that the TAU interrupt hardware
516 is buggy and can cause a situation which would lead unexplained hard
517 lockups.
518
519 Unless you are extending the TAU driver, or enjoy kernel/hardware
520 debugging, leave this option off.
521
522config TAU_AVERAGE
523 bool "Average high and low temp"
524 depends on TAU
525 ---help---
526 The TAU hardware can compare the temperature to an upper and lower
527 bound. The default behavior is to show both the upper and lower
528 bound in /proc/cpuinfo. If the range is large, the temperature is
529 either changing a lot, or the TAU hardware is broken (likely on some
530 G4's). If the range is small (around 4 degrees), the temperature is
531 relatively stable. If you say Y here, a single temperature value,
532 halfway between the upper and lower bounds, will be reported in
533 /proc/cpuinfo.
534
535 If in doubt, say N here.
536endmenu
537
538source arch/powerpc/platforms/embedded6xx/Kconfig
539source arch/powerpc/platforms/4xx/Kconfig
Kumar Gala08264cb2006-01-10 21:43:56 -0600540source arch/powerpc/platforms/83xx/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000541source arch/powerpc/platforms/85xx/Kconfig
542source arch/powerpc/platforms/8xx/Kconfig
Arnd Bergmann67207b92005-11-15 15:53:48 -0500543source arch/powerpc/platforms/cell/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000544
545menu "Kernel options"
546
547config HIGHMEM
548 bool "High memory support"
549 depends on PPC32
550
551source kernel/Kconfig.hz
552source kernel/Kconfig.preempt
553source "fs/Kconfig.binfmt"
554
555# We optimistically allocate largepages from the VM, so make the limit
556# large enough (16MB). This badly named config option is actually
557# max order + 1
558config FORCE_MAX_ZONEORDER
559 int
560 depends on PPC64
Mike Kravetz02864862005-11-07 13:48:59 -0800561 default "9" if PPC_64K_PAGES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000562 default "13"
563
564config MATH_EMULATION
565 bool "Math emulation"
566 depends on 4xx || 8xx || E200 || E500
567 ---help---
568 Some PowerPC chips designed for embedded applications do not have
569 a floating-point unit and therefore do not implement the
570 floating-point instructions in the PowerPC instruction set. If you
571 say Y here, the kernel will include code to emulate a floating-point
572 unit, which will allow programs that use floating-point
573 instructions to run.
574
575config IOMMU_VMERGE
576 bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
577 depends on EXPERIMENTAL && PPC64
578 default n
579 help
580 Cause IO segments sent to a device for DMA to be merged virtually
581 by the IOMMU when they happen to have been allocated contiguously.
582 This doesn't add pressure to the IOMMU allocator. However, some
583 drivers don't support getting large merged segments coming back
584 from *_map_sg(). Say Y if you know the drivers you are using are
585 properly handling this case.
586
587config HOTPLUG_CPU
588 bool "Support for enabling/disabling CPUs"
589 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
590 ---help---
591 Say Y here to be able to disable and re-enable individual
592 CPUs at runtime on SMP machines.
593
594 Say N if you are unsure.
595
596config KEXEC
597 bool "kexec system call (EXPERIMENTAL)"
598 depends on PPC_MULTIPLATFORM && EXPERIMENTAL
599 help
600 kexec is a system call that implements the ability to shutdown your
601 current kernel, and to start another kernel. It is like a reboot
602 but it is indepedent of the system firmware. And like a reboot
603 you can start any kernel with it, not just Linux.
604
605 The name comes from the similiarity to the exec system call.
606
607 It is an ongoing process to be certain the hardware in a machine
608 is properly shutdown, so do not be surprised if this code does not
609 initially work for you. It may help to enable device hotplugging
610 support. As of this writing the exact hardware interface is
611 strongly in flux, so no good recommendation can be made.
612
Haren Mynenie8625d462006-01-14 13:48:25 -0800613config CRASH_DUMP
Michael Ellermancd9c99d2006-03-10 15:01:08 +1100614 bool "Build a kdump crash kernel (EXPERIMENTAL)"
Haren Mynenie8625d462006-01-14 13:48:25 -0800615 depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL
616 help
617 Build a kernel suitable for use as a kdump capture kernel.
618 The kernel will be linked at a different address than normal, and
619 so can only be used for Kdump.
620
621 Don't change this unless you know what you are doing.
622
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000623config EMBEDDEDBOOT
624 bool
625 depends on 8xx || 8260
626 default y
627
628config PC_KEYBOARD
629 bool "PC PS/2 style Keyboard"
630 depends on 4xx || CPM2
631
632config PPCBUG_NVRAM
633 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
634 default y if PPC_PREP
635
636config IRQ_ALL_CPUS
637 bool "Distribute interrupts on all CPUs by default"
638 depends on SMP && !MV64360
639 help
640 This option gives the kernel permission to distribute IRQs across
641 multiple CPUs. Saying N here will route all IRQs to the first
642 CPU. Generally saying Y is safe, although some problems have been
643 reported with SMP Power Macintoshes with this option enabled.
644
645source "arch/powerpc/platforms/pseries/Kconfig"
646
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700647config NUMA
648 bool "NUMA support"
649 depends on PPC64
650 default y if SMP && PPC_PSERIES
651
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700652config NODES_SHIFT
653 int
654 default "4"
655 depends on NEED_MULTIPLE_NODES
656
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000657config ARCH_SELECT_MEMORY_MODEL
658 def_bool y
659 depends on PPC64
660
661config ARCH_FLATMEM_ENABLE
Andy Whitcroft9100b202005-11-29 19:20:55 +0000662 def_bool y
663 depends on (PPC64 && !NUMA) || PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000664
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000665config ARCH_SPARSEMEM_ENABLE
666 def_bool y
Andy Whitcroft9100b202005-11-29 19:20:55 +0000667 depends on PPC64
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100668
669config ARCH_SPARSEMEM_DEFAULT
670 def_bool y
671 depends on SMP && PPC_PSERIES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000672
673source "mm/Kconfig"
674
675config HAVE_ARCH_EARLY_PFN_TO_NID
676 def_bool y
677 depends on NEED_MULTIPLE_NODES
678
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800679config ARCH_MEMORY_PROBE
680 def_bool y
681 depends on MEMORY_HOTPLUG
682
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100683config PPC_64K_PAGES
684 bool "64k page size"
Benjamin Herrenschmidt863c84b2005-11-07 00:57:58 -0800685 depends on PPC64
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100686 help
687 This option changes the kernel logical page size to 64k. On machines
688 without processor support for 64k pages, the kernel will simulate
689 them by loading each individual 4k page on demand transparently,
690 while on hardware with such support, it will be used to map
691 normal application pages.
692
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000693config SCHED_SMT
694 bool "SMT (Hyperthreading) scheduler support"
695 depends on PPC64 && SMP
696 default off
697 help
698 SMT scheduler support improves the CPU scheduler's decision making
699 when dealing with POWER5 cpus at a cost of slightly increased
700 overhead in some places. If unsure say N here.
701
702config PROC_DEVICETREE
Paul Mackerras5f296752005-10-17 20:14:59 +1000703 bool "Support for device tree in /proc"
704 depends on PROC_FS
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000705 help
706 This option adds a device-tree directory under /proc which contains
707 an image of the device tree that the kernel copies from Open
Paul Mackerras5f296752005-10-17 20:14:59 +1000708 Firmware or other boot firmware. If unsure, say Y here.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000709
710source "arch/powerpc/platforms/prep/Kconfig"
711
712config CMDLINE_BOOL
713 bool "Default bootloader kernel arguments"
714 depends on !PPC_ISERIES
715
716config CMDLINE
717 string "Initial kernel command string"
718 depends on CMDLINE_BOOL
719 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
720 help
721 On some platforms, there is currently no way for the boot loader to
722 pass arguments to the kernel. For these platforms, you can supply
723 some command-line options at build time by entering them here. In
724 most cases you will need to specify the root device here.
725
726if !44x || BROKEN
727source kernel/power/Kconfig
728endif
729
730config SECCOMP
731 bool "Enable seccomp to safely compute untrusted bytecode"
732 depends on PROC_FS
733 default y
734 help
735 This kernel feature is useful for number crunching applications
736 that may need to compute untrusted bytecode during their
737 execution. By using pipes or other transports made available to
738 the process as file descriptors supporting the read/write
739 syscalls, it's possible to isolate those applications in
740 their own address space using seccomp. Once seccomp is
741 enabled via /proc/<pid>/seccomp, it cannot be disabled
742 and the task is only allowed to execute a few safe syscalls
743 defined by each seccomp mode.
744
745 If unsure, say Y. Only embedded should say N here.
746
747endmenu
748
749config ISA_DMA_API
750 bool
751 default y
752
753menu "Bus options"
754
755config ISA
756 bool "Support for ISA-bus hardware"
757 depends on PPC_PREP || PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000758 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000759 help
760 Find out whether you have ISA slots on your motherboard. ISA is the
761 name of a bus system, i.e. the way the CPU talks to the other stuff
762 inside your box. If you have an Apple machine, say N here; if you
763 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
764 you have an embedded board, consult your board documentation.
765
766config GENERIC_ISA_DMA
767 bool
768 depends on PPC64 || POWER4 || 6xx && !CPM2
769 default y
770
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000771config PPC_I8259
772 bool
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000773 default n
774
Paul Mackerras25635c72005-10-26 16:36:55 +1000775config PPC_INDIRECT_PCI
776 bool
777 depends on PCI
Becky Bruce63dafe52006-01-14 16:57:39 -0600778 default y if 40x || 44x
Paul Mackerras25635c72005-10-26 16:36:55 +1000779 default n
780
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000781config EISA
782 bool
783
784config SBUS
785 bool
786
Kumar Gala08264cb2006-01-10 21:43:56 -0600787config FSL_SOC
788 bool
789
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000790# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
791config MCA
792 bool
793
794config PCI
Becky Bruce63dafe52006-01-14 16:57:39 -0600795 bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES)
796 default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx && !PPC_85xx
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000797 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
798 default PCI_QSPAN if !4xx && !CPM2 && 8xx
799 help
800 Find out whether your system includes a PCI bus. PCI is the name of
801 a bus system, i.e. the way the CPU talks to the other stuff inside
802 your box. If you say Y here, the kernel will include drivers and
803 infrastructure code to support PCI bus devices.
804
805config PCI_DOMAINS
806 bool
807 default PCI
808
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000809config PCI_QSPAN
810 bool "QSpan PCI"
811 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000812 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000813 help
814 Say Y here if you have a system based on a Motorola 8xx-series
815 embedded processor with a QSPAN PCI interface, otherwise say N.
816
817config PCI_8260
818 bool
819 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000820 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000821 default y
822
823config 8260_PCI9
824 bool " Enable workaround for MPC826x erratum PCI 9"
825 depends on PCI_8260 && !ADS8272
826 default y
827
828choice
829 prompt " IDMA channel for PCI 9 workaround"
830 depends on 8260_PCI9
831
832config 8260_PCI9_IDMA1
833 bool "IDMA1"
834
835config 8260_PCI9_IDMA2
836 bool "IDMA2"
837
838config 8260_PCI9_IDMA3
839 bool "IDMA3"
840
841config 8260_PCI9_IDMA4
842 bool "IDMA4"
843
844endchoice
845
846source "drivers/pci/Kconfig"
847
848source "drivers/pcmcia/Kconfig"
849
850source "drivers/pci/hotplug/Kconfig"
851
852endmenu
853
854menu "Advanced setup"
855 depends on PPC32
856
857config ADVANCED_OPTIONS
858 bool "Prompt for advanced kernel configuration options"
859 help
860 This option will enable prompting for a variety of advanced kernel
861 configuration options. These options can cause the kernel to not
862 work if they are set incorrectly, but can be used to optimize certain
863 aspects of kernel memory management.
864
865 Unless you know what you are doing, say N here.
866
867comment "Default settings for advanced configuration options are used"
868 depends on !ADVANCED_OPTIONS
869
870config HIGHMEM_START_BOOL
871 bool "Set high memory pool address"
872 depends on ADVANCED_OPTIONS && HIGHMEM
873 help
874 This option allows you to set the base address of the kernel virtual
875 area used to map high memory pages. This can be useful in
876 optimizing the layout of kernel virtual memory.
877
878 Say N here unless you know what you are doing.
879
880config HIGHMEM_START
881 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
882 default "0xfe000000"
883
884config LOWMEM_SIZE_BOOL
885 bool "Set maximum low memory"
886 depends on ADVANCED_OPTIONS
887 help
888 This option allows you to set the maximum amount of memory which
889 will be used as "low memory", that is, memory which the kernel can
890 access directly, without having to set up a kernel virtual mapping.
891 This can be useful in optimizing the layout of kernel virtual
892 memory.
893
894 Say N here unless you know what you are doing.
895
896config LOWMEM_SIZE
897 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
898 default "0x30000000"
899
900config KERNEL_START_BOOL
901 bool "Set custom kernel base address"
902 depends on ADVANCED_OPTIONS
903 help
904 This option allows you to set the kernel virtual address at which
905 the kernel will map low memory (the kernel image will be linked at
906 this address). This can be useful in optimizing the virtual memory
907 layout of the system.
908
909 Say N here unless you know what you are doing.
910
911config KERNEL_START
912 hex "Virtual address of kernel base" if KERNEL_START_BOOL
913 default "0xc0000000"
914
915config TASK_SIZE_BOOL
916 bool "Set custom user task size"
917 depends on ADVANCED_OPTIONS
918 help
919 This option allows you to set the amount of virtual address space
920 allocated to user tasks. This can be useful in optimizing the
921 virtual memory layout of the system.
922
923 Say N here unless you know what you are doing.
924
925config TASK_SIZE
926 hex "Size of user task space" if TASK_SIZE_BOOL
927 default "0x80000000"
928
929config CONSISTENT_START_BOOL
930 bool "Set custom consistent memory pool address"
931 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
932 help
933 This option allows you to set the base virtual address
934 of the the consistent memory pool. This pool of virtual
935 memory is used to make consistent memory allocations.
936
937config CONSISTENT_START
938 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
939 default "0xff100000" if NOT_COHERENT_CACHE
940
941config CONSISTENT_SIZE_BOOL
942 bool "Set custom consistent memory pool size"
943 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
944 help
945 This option allows you to set the size of the the
946 consistent memory pool. This pool of virtual memory
947 is used to make consistent memory allocations.
948
949config CONSISTENT_SIZE
950 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
951 default "0x00200000" if NOT_COHERENT_CACHE
952
953config BOOT_LOAD_BOOL
954 bool "Set the boot link/load address"
955 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
956 help
957 This option allows you to set the initial load address of the zImage
958 or zImage.initrd file. This can be useful if you are on a board
959 which has a small amount of memory.
960
961 Say N here unless you know what you are doing.
962
963config BOOT_LOAD
964 hex "Link/load address for booting" if BOOT_LOAD_BOOL
965 default "0x00400000" if 40x || 8xx || 8260
966 default "0x01000000" if 44x
967 default "0x00800000"
968
969config PIN_TLB
970 bool "Pinned Kernel TLBs (860 ONLY)"
971 depends on ADVANCED_OPTIONS && 8xx
972endmenu
973
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000974if PPC64
975config KERNEL_START
976 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +1000977 default "0xc000000000000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000978endif
979
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000980source "net/Kconfig"
981
982source "drivers/Kconfig"
983
984source "fs/Kconfig"
985
986# XXX source "arch/ppc/8xx_io/Kconfig"
987
988# XXX source "arch/ppc/8260_io/Kconfig"
989
990source "arch/powerpc/platforms/iseries/Kconfig"
991
992source "lib/Kconfig"
993
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800994menu "Instrumentation Support"
995 depends on EXPERIMENTAL
996
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000997source "arch/powerpc/oprofile/Kconfig"
998
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800999config KPROBES
1000 bool "Kprobes (EXPERIMENTAL)"
Linus Torvaldsadd2b6f2006-02-26 20:24:40 -08001001 depends on PPC64 && EXPERIMENTAL && MODULES
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -08001002 help
1003 Kprobes allows you to trap at almost any kernel address and
1004 execute a callback function. register_kprobe() establishes
1005 a probepoint and specifies the callback. Kprobes is useful
1006 for kernel debugging, non-intrusive instrumentation and testing.
1007 If in doubt, say "N".
1008endmenu
1009
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001010source "arch/powerpc/Kconfig.debug"
1011
1012source "security/Kconfig"
1013
1014config KEYS_COMPAT
1015 bool
1016 depends on COMPAT && KEYS
1017 default y
1018
1019source "crypto/Kconfig"