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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
40config GENERIC_CALIBRATE_DELAY
41 bool
42 default y
43
44config PPC
45 bool
46 default y
47
48config EARLY_PRINTK
49 bool
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +110050 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +100051
52config COMPAT
53 bool
54 default y if PPC64
55
56config SYSVIPC_COMPAT
57 bool
58 depends on COMPAT && SYSVIPC
59 default y
60
61# All PPC32s use generic nvram driver through ppc_md
62config GENERIC_NVRAM
63 bool
64 default y if PPC32
65
66config SCHED_NO_NO_OMIT_FRAME_POINTER
67 bool
68 default y
69
70config ARCH_MAY_HAVE_PC_FDC
71 bool
72 default y
73
74menu "Processor support"
75choice
76 prompt "Processor Type"
77 depends on PPC32
78 default 6xx
79
80config 6xx
81 bool "6xx/7xx/74xx"
82 select PPC_FPU
83 help
84 There are four families of PowerPC chips supported. The more common
85 types (601, 603, 604, 740, 750, 7400), the Motorola embedded
86 versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
87 embedded versions (403 and 405) and the high end 64 bit Power
88 processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
89
90 Unless you are building a kernel for one of the embedded processor
91 systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx.
92 Note that the kernel runs in 32-bit mode even on 64-bit chips.
93
94config PPC_52xx
95 bool "Freescale 52xx"
96
97config PPC_82xx
98 bool "Freescale 82xx"
99
100config PPC_83xx
101 bool "Freescale 83xx"
102
103config 40x
104 bool "AMCC 40x"
105
106config 44x
107 bool "AMCC 44x"
108
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000109config 8xx
110 bool "Freescale 8xx"
111
112config E200
113 bool "Freescale e200"
114
115config E500
116 bool "Freescale e500"
117endchoice
118
119config POWER4_ONLY
120 bool "Optimize for POWER4"
Paul Mackerras187a0062005-10-06 12:49:05 +1000121 depends on PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000122 default n
123 ---help---
124 Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
125 The resulting binary will not work on POWER3 or RS64 processors
126 when compiled with binutils 2.15 or later.
127
128config POWER3
129 bool
Paul Mackerras187a0062005-10-06 12:49:05 +1000130 depends on PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000131 default y if !POWER4_ONLY
132
133config POWER4
Paul Mackerras187a0062005-10-06 12:49:05 +1000134 depends on PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000135 def_bool y
136
137config PPC_FPU
Paul Mackerras187a0062005-10-06 12:49:05 +1000138 bool
139 default y if PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000140
141config BOOKE
142 bool
143 depends on E200 || E500
144 default y
145
146config FSL_BOOKE
147 bool
148 depends on E200 || E500
149 default y
150
151config PTE_64BIT
152 bool
153 depends on 44x || E500
154 default y if 44x
155 default y if E500 && PHYS_64BIT
156
157config PHYS_64BIT
158 bool 'Large physical address support' if E500
159 depends on 44x || E500
160 default y if 44x
161 ---help---
162 This option enables kernel support for larger than 32-bit physical
163 addresses. This features is not be available on all e500 cores.
164
165 If in doubt, say N here.
166
167config ALTIVEC
168 bool "AltiVec Support"
169 depends on 6xx || POWER4
170 ---help---
171 This option enables kernel support for the Altivec extensions to the
172 PowerPC processor. The kernel currently supports saving and restoring
173 altivec registers, and turning on the 'altivec enable' bit so user
174 processes can execute altivec instructions.
175
176 This option is only usefully if you have a processor that supports
177 altivec (G4, otherwise known as 74xx series), but does not have
178 any affect on a non-altivec cpu (it does, however add code to the
179 kernel).
180
181 If in doubt, say Y here.
182
183config SPE
184 bool "SPE Support"
185 depends on E200 || E500
186 ---help---
187 This option enables kernel support for the Signal Processing
188 Extensions (SPE) to the PowerPC processor. The kernel currently
189 supports saving and restoring SPE registers, and turning on the
190 'spe enable' bit so user processes can execute SPE instructions.
191
192 This option is only useful if you have a processor that supports
193 SPE (e500, otherwise known as 85xx series), but does not have any
194 effect on a non-spe cpu (it does, however add code to the kernel).
195
196 If in doubt, say Y here.
197
198config PPC_STD_MMU
199 bool
200 depends on 6xx || POWER3 || POWER4 || PPC64
201 default y
202
203config PPC_STD_MMU_32
204 def_bool y
205 depends on PPC_STD_MMU && PPC32
206
207config SMP
208 depends on PPC_STD_MMU
209 bool "Symmetric multi-processing support"
210 ---help---
211 This enables support for systems with more than one CPU. If you have
212 a system with only one CPU, say N. If you have a system with more
213 than one CPU, say Y. Note that the kernel does not currently
214 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
215 since they have inadequate hardware support for multiprocessor
216 operation.
217
218 If you say N here, the kernel will run on single and multiprocessor
219 machines, but will use only one CPU of a multiprocessor machine. If
220 you say Y here, the kernel will run on single-processor machines.
221 On a single-processor machine, the kernel will run faster if you say
222 N here.
223
224 If you don't know what to do here, say N.
225
226config NR_CPUS
Olaf Heringe8a167a2005-12-01 21:10:10 +0100227 int "Maximum number of CPUs (2-128)"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000228 range 2 128
229 depends on SMP
230 default "32" if PPC64
231 default "4"
232
233config NOT_COHERENT_CACHE
234 bool
235 depends on 4xx || 8xx || E200
236 default y
237endmenu
238
239source "init/Kconfig"
240
241menu "Platform support"
242 depends on PPC64 || 6xx
243
244choice
245 prompt "Machine type"
246 default PPC_MULTIPLATFORM
247
248config PPC_MULTIPLATFORM
249 bool "Generic desktop/server/laptop"
250 help
251 Select this option if configuring for an IBM pSeries or
252 RS/6000 machine, an Apple machine, or a PReP, CHRP,
253 Maple or Cell-based machine.
254
255config PPC_ISERIES
256 bool "IBM Legacy iSeries"
257 depends on PPC64
258
259config EMBEDDED6xx
260 bool "Embedded 6xx/7xx/7xxx-based board"
Paul Mackerras5be396b2005-11-14 17:31:55 +1100261 depends on PPC32 && BROKEN
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000262
263config APUS
264 bool "Amiga-APUS"
265 depends on PPC32 && BROKEN
266 help
267 Select APUS if configuring for a PowerUP Amiga.
268 More information is available at:
269 <http://linux-apus.sourceforge.net/>.
270endchoice
271
272config PPC_PSERIES
273 depends on PPC_MULTIPLATFORM && PPC64
274 bool " IBM pSeries & new (POWER5-based) iSeries"
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000275 select PPC_I8259
Paul Mackerras033ef332005-10-26 17:05:24 +1000276 select PPC_RTAS
277 select RTAS_ERROR_LOGGING
Paul Mackerras13b8a272006-01-10 16:19:05 +1100278 select PPC_UDBG_16550
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000279 default y
280
281config PPC_CHRP
282 bool " Common Hardware Reference Platform (CHRP) based machines"
283 depends on PPC_MULTIPLATFORM && PPC32
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000284 select PPC_I8259
Paul Mackerras25635c72005-10-26 16:36:55 +1000285 select PPC_INDIRECT_PCI
Paul Mackerras033ef332005-10-26 17:05:24 +1000286 select PPC_RTAS
Paul Mackerras830825d2005-10-26 17:16:38 +1000287 select PPC_MPC106
Paul Mackerras13b8a272006-01-10 16:19:05 +1100288 select PPC_UDBG_16550
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000289 default y
290
291config PPC_PMAC
292 bool " Apple PowerMac based machines"
293 depends on PPC_MULTIPLATFORM
Paul Mackerras25635c72005-10-26 16:36:55 +1000294 select PPC_INDIRECT_PCI if PPC32
Paul Mackerrasb6a4ce52005-10-26 22:54:17 +1000295 select PPC_MPC106 if PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000296 default y
297
298config PPC_PMAC64
299 bool
300 depends on PPC_PMAC && POWER4
Paul Mackerras35499c02005-10-22 16:02:39 +1000301 select U3_DART
Benjamin Herrenschmidt1beb6a72005-12-14 13:10:10 +1100302 select MPIC_BROKEN_U3
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100303 select GENERIC_TBSYNC
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000304 default y
305
306config PPC_PREP
307 bool " PowerPC Reference Platform (PReP) based machines"
Paul Mackerras5be396b2005-11-14 17:31:55 +1100308 depends on PPC_MULTIPLATFORM && PPC32 && BROKEN
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000309 select PPC_I8259
Paul Mackerras25635c72005-10-26 16:36:55 +1000310 select PPC_INDIRECT_PCI
Paul Mackerras13b8a272006-01-10 16:19:05 +1100311 select PPC_UDBG_16550
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000312 default y
313
314config PPC_MAPLE
315 depends on PPC_MULTIPLATFORM && PPC64
316 bool " Maple 970FX Evaluation Board"
317 select U3_DART
318 select MPIC_BROKEN_U3
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100319 select GENERIC_TBSYNC
Paul Mackerras13b8a272006-01-10 16:19:05 +1100320 select PPC_UDBG_16550
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000321 default n
322 help
323 This option enables support for the Maple 970FX Evaluation Board.
324 For more informations, refer to <http://www.970eval.com>
325
Arnd Bergmannf3f66f52005-10-31 20:08:37 -0500326config PPC_CELL
327 bool " Cell Broadband Processor Architecture"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000328 depends on PPC_MULTIPLATFORM && PPC64
Paul Mackerras033ef332005-10-26 17:05:24 +1000329 select PPC_RTAS
Arnd Bergmannedf03c12005-10-31 20:08:40 -0500330 select MMIO_NVRAM
Paul Mackerras13b8a272006-01-10 16:19:05 +1100331 select PPC_UDBG_16550
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000332
333config PPC_OF
Paul Mackerras0a498d92006-01-09 20:17:01 +1100334 def_bool y
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000335
336config XICS
337 depends on PPC_PSERIES
338 bool
339 default y
340
341config U3_DART
342 bool
343 depends on PPC_MULTIPLATFORM && PPC64
344 default n
345
346config MPIC
Paul Mackerrasbbd0abd2005-10-26 21:45:56 +1000347 depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000348 bool
349 default y
350
Paul Mackerras033ef332005-10-26 17:05:24 +1000351config PPC_RTAS
352 bool
353 default n
354
355config RTAS_ERROR_LOGGING
356 bool
357 depends on PPC_RTAS
358 default n
359
Paul Mackerrasf4fcbbe2005-11-03 14:41:19 +1100360config RTAS_PROC
361 bool "Proc interface to RTAS"
Arnd Bergmanne9add2e2005-10-31 20:08:39 -0500362 depends on PPC_RTAS
Paul Mackerrasf4fcbbe2005-11-03 14:41:19 +1100363 default y
364
365config RTAS_FLASH
366 tristate "Firmware flash interface"
367 depends on PPC64 && RTAS_PROC
Arnd Bergmanne9add2e2005-10-31 20:08:39 -0500368
Arnd Bergmannedf03c12005-10-31 20:08:40 -0500369config MMIO_NVRAM
370 bool
371 default n
372
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000373config MPIC_BROKEN_U3
374 bool
375 depends on PPC_MAPLE
376 default y
377
Paul Mackerras13b8a272006-01-10 16:19:05 +1100378config PPC_UDBG_16550
379 bool
380 default n
381
Arnd Bergmannf3f66f52005-10-31 20:08:37 -0500382config CELL_IIC
383 depends on PPC_CELL
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000384 bool
385 default y
386
Michael Ellerman398ab1f2005-12-04 18:39:23 +1100387config CRASH_DUMP
388 bool "kernel crash dumps (EXPERIMENTAL)"
389 depends on PPC_MULTIPLATFORM
390 depends on EXPERIMENTAL
391 help
392 Build a kernel suitable for use as a kdump capture kernel.
393 The kernel will be linked at a different address than normal, and
394 so can only be used for Kdump.
395
396 Don't change this unless you know what you are doing.
397
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000398config IBMVIO
399 depends on PPC_PSERIES || PPC_ISERIES
400 bool
401 default y
402
Heiko J Schickd7a30102005-11-16 08:56:43 +0100403config IBMEBUS
404 depends on PPC_PSERIES
405 bool "Support for GX bus based adapters"
Heiko J Schickd7a30102005-11-16 08:56:43 +0100406 help
407 Bus device driver for GX bus based adapters.
408
Paul Mackerras830825d2005-10-26 17:16:38 +1000409config PPC_MPC106
410 bool
411 default n
412
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100413config GENERIC_TBSYNC
414 bool
415 default y if CONFIG_PPC32 && CONFIG_SMP
416 default n
417
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000418source "drivers/cpufreq/Kconfig"
419
420config CPU_FREQ_PMAC
421 bool "Support for Apple PowerBooks"
422 depends on CPU_FREQ && ADB_PMU && PPC32
423 select CPU_FREQ_TABLE
424 help
425 This adds support for frequency switching on Apple PowerBooks,
426 this currently includes some models of iBook & Titanium
427 PowerBook.
428
Benjamin Herrenschmidt43501472005-11-07 14:27:33 +1100429config CPU_FREQ_PMAC64
430 bool "Support for some Apple G5s"
431 depends on CPU_FREQ && PMAC_SMU && PPC64
432 select CPU_FREQ_TABLE
433 help
434 This adds support for frequency switching on Apple iMac G5,
435 and some of the more recent desktop G5 machines as well.
436
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000437config PPC601_SYNC_FIX
438 bool "Workarounds for PPC601 bugs"
439 depends on 6xx && (PPC_PREP || PPC_PMAC)
440 help
441 Some versions of the PPC601 (the first PowerPC chip) have bugs which
442 mean that extra synchronization instructions are required near
443 certain instructions, typically those that make major changes to the
444 CPU state. These extra instructions reduce performance slightly.
445 If you say N here, these extra instructions will not be included,
446 resulting in a kernel which will run faster but may not run at all
447 on some systems with the PPC601 chip.
448
449 If in doubt, say Y here.
450
451config TAU
452 bool "Thermal Management Support"
453 depends on 6xx
454 help
455 G3 and G4 processors have an on-chip temperature sensor called the
456 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
457 temperature within 2-4 degrees Celsius. This option shows the current
458 on-die temperature in /proc/cpuinfo if the cpu supports it.
459
460 Unfortunately, on some chip revisions, this sensor is very inaccurate
461 and in some cases, does not work at all, so don't assume the cpu
462 temp is actually what /proc/cpuinfo says it is.
463
464config TAU_INT
465 bool "Interrupt driven TAU driver (DANGEROUS)"
466 depends on TAU
467 ---help---
468 The TAU supports an interrupt driven mode which causes an interrupt
469 whenever the temperature goes out of range. This is the fastest way
470 to get notified the temp has exceeded a range. With this option off,
471 a timer is used to re-check the temperature periodically.
472
473 However, on some cpus it appears that the TAU interrupt hardware
474 is buggy and can cause a situation which would lead unexplained hard
475 lockups.
476
477 Unless you are extending the TAU driver, or enjoy kernel/hardware
478 debugging, leave this option off.
479
480config TAU_AVERAGE
481 bool "Average high and low temp"
482 depends on TAU
483 ---help---
484 The TAU hardware can compare the temperature to an upper and lower
485 bound. The default behavior is to show both the upper and lower
486 bound in /proc/cpuinfo. If the range is large, the temperature is
487 either changing a lot, or the TAU hardware is broken (likely on some
488 G4's). If the range is small (around 4 degrees), the temperature is
489 relatively stable. If you say Y here, a single temperature value,
490 halfway between the upper and lower bounds, will be reported in
491 /proc/cpuinfo.
492
493 If in doubt, say N here.
494endmenu
495
496source arch/powerpc/platforms/embedded6xx/Kconfig
497source arch/powerpc/platforms/4xx/Kconfig
498source arch/powerpc/platforms/85xx/Kconfig
499source arch/powerpc/platforms/8xx/Kconfig
Arnd Bergmann67207b92005-11-15 15:53:48 -0500500source arch/powerpc/platforms/cell/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000501
502menu "Kernel options"
503
504config HIGHMEM
505 bool "High memory support"
506 depends on PPC32
507
508source kernel/Kconfig.hz
509source kernel/Kconfig.preempt
510source "fs/Kconfig.binfmt"
511
512# We optimistically allocate largepages from the VM, so make the limit
513# large enough (16MB). This badly named config option is actually
514# max order + 1
515config FORCE_MAX_ZONEORDER
516 int
517 depends on PPC64
Mike Kravetz02864862005-11-07 13:48:59 -0800518 default "9" if PPC_64K_PAGES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000519 default "13"
520
521config MATH_EMULATION
522 bool "Math emulation"
523 depends on 4xx || 8xx || E200 || E500
524 ---help---
525 Some PowerPC chips designed for embedded applications do not have
526 a floating-point unit and therefore do not implement the
527 floating-point instructions in the PowerPC instruction set. If you
528 say Y here, the kernel will include code to emulate a floating-point
529 unit, which will allow programs that use floating-point
530 instructions to run.
531
532config IOMMU_VMERGE
533 bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
534 depends on EXPERIMENTAL && PPC64
535 default n
536 help
537 Cause IO segments sent to a device for DMA to be merged virtually
538 by the IOMMU when they happen to have been allocated contiguously.
539 This doesn't add pressure to the IOMMU allocator. However, some
540 drivers don't support getting large merged segments coming back
541 from *_map_sg(). Say Y if you know the drivers you are using are
542 properly handling this case.
543
544config HOTPLUG_CPU
545 bool "Support for enabling/disabling CPUs"
546 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
547 ---help---
548 Say Y here to be able to disable and re-enable individual
549 CPUs at runtime on SMP machines.
550
551 Say N if you are unsure.
552
553config KEXEC
554 bool "kexec system call (EXPERIMENTAL)"
555 depends on PPC_MULTIPLATFORM && EXPERIMENTAL
556 help
557 kexec is a system call that implements the ability to shutdown your
558 current kernel, and to start another kernel. It is like a reboot
559 but it is indepedent of the system firmware. And like a reboot
560 you can start any kernel with it, not just Linux.
561
562 The name comes from the similiarity to the exec system call.
563
564 It is an ongoing process to be certain the hardware in a machine
565 is properly shutdown, so do not be surprised if this code does not
566 initially work for you. It may help to enable device hotplugging
567 support. As of this writing the exact hardware interface is
568 strongly in flux, so no good recommendation can be made.
569
570config EMBEDDEDBOOT
571 bool
572 depends on 8xx || 8260
573 default y
574
575config PC_KEYBOARD
576 bool "PC PS/2 style Keyboard"
577 depends on 4xx || CPM2
578
579config PPCBUG_NVRAM
580 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
581 default y if PPC_PREP
582
583config IRQ_ALL_CPUS
584 bool "Distribute interrupts on all CPUs by default"
585 depends on SMP && !MV64360
586 help
587 This option gives the kernel permission to distribute IRQs across
588 multiple CPUs. Saying N here will route all IRQs to the first
589 CPU. Generally saying Y is safe, although some problems have been
590 reported with SMP Power Macintoshes with this option enabled.
591
592source "arch/powerpc/platforms/pseries/Kconfig"
593
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700594config NUMA
595 bool "NUMA support"
596 depends on PPC64
597 default y if SMP && PPC_PSERIES
598
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000599config ARCH_SELECT_MEMORY_MODEL
600 def_bool y
601 depends on PPC64
602
603config ARCH_FLATMEM_ENABLE
Andy Whitcroft9100b202005-11-29 19:20:55 +0000604 def_bool y
605 depends on (PPC64 && !NUMA) || PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000606
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000607config ARCH_SPARSEMEM_ENABLE
608 def_bool y
Andy Whitcroft9100b202005-11-29 19:20:55 +0000609 depends on PPC64
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100610
611config ARCH_SPARSEMEM_DEFAULT
612 def_bool y
613 depends on SMP && PPC_PSERIES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000614
615source "mm/Kconfig"
616
617config HAVE_ARCH_EARLY_PFN_TO_NID
618 def_bool y
619 depends on NEED_MULTIPLE_NODES
620
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800621config ARCH_MEMORY_PROBE
622 def_bool y
623 depends on MEMORY_HOTPLUG
624
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100625config PPC_64K_PAGES
626 bool "64k page size"
Benjamin Herrenschmidt863c84b2005-11-07 00:57:58 -0800627 depends on PPC64
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100628 help
629 This option changes the kernel logical page size to 64k. On machines
630 without processor support for 64k pages, the kernel will simulate
631 them by loading each individual 4k page on demand transparently,
632 while on hardware with such support, it will be used to map
633 normal application pages.
634
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000635config SCHED_SMT
636 bool "SMT (Hyperthreading) scheduler support"
637 depends on PPC64 && SMP
638 default off
639 help
640 SMT scheduler support improves the CPU scheduler's decision making
641 when dealing with POWER5 cpus at a cost of slightly increased
642 overhead in some places. If unsure say N here.
643
644config PROC_DEVICETREE
Paul Mackerras5f296752005-10-17 20:14:59 +1000645 bool "Support for device tree in /proc"
646 depends on PROC_FS
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000647 help
648 This option adds a device-tree directory under /proc which contains
649 an image of the device tree that the kernel copies from Open
Paul Mackerras5f296752005-10-17 20:14:59 +1000650 Firmware or other boot firmware. If unsure, say Y here.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000651
652source "arch/powerpc/platforms/prep/Kconfig"
653
654config CMDLINE_BOOL
655 bool "Default bootloader kernel arguments"
656 depends on !PPC_ISERIES
657
658config CMDLINE
659 string "Initial kernel command string"
660 depends on CMDLINE_BOOL
661 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
662 help
663 On some platforms, there is currently no way for the boot loader to
664 pass arguments to the kernel. For these platforms, you can supply
665 some command-line options at build time by entering them here. In
666 most cases you will need to specify the root device here.
667
668if !44x || BROKEN
669source kernel/power/Kconfig
670endif
671
672config SECCOMP
673 bool "Enable seccomp to safely compute untrusted bytecode"
674 depends on PROC_FS
675 default y
676 help
677 This kernel feature is useful for number crunching applications
678 that may need to compute untrusted bytecode during their
679 execution. By using pipes or other transports made available to
680 the process as file descriptors supporting the read/write
681 syscalls, it's possible to isolate those applications in
682 their own address space using seccomp. Once seccomp is
683 enabled via /proc/<pid>/seccomp, it cannot be disabled
684 and the task is only allowed to execute a few safe syscalls
685 defined by each seccomp mode.
686
687 If unsure, say Y. Only embedded should say N here.
688
689endmenu
690
691config ISA_DMA_API
692 bool
693 default y
694
695menu "Bus options"
696
697config ISA
698 bool "Support for ISA-bus hardware"
699 depends on PPC_PREP || PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000700 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000701 help
702 Find out whether you have ISA slots on your motherboard. ISA is the
703 name of a bus system, i.e. the way the CPU talks to the other stuff
704 inside your box. If you have an Apple machine, say N here; if you
705 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
706 you have an embedded board, consult your board documentation.
707
708config GENERIC_ISA_DMA
709 bool
710 depends on PPC64 || POWER4 || 6xx && !CPM2
711 default y
712
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000713config PPC_I8259
714 bool
715 default y if 85xx
716 default n
717
Paul Mackerras25635c72005-10-26 16:36:55 +1000718config PPC_INDIRECT_PCI
719 bool
720 depends on PCI
721 default y if 40x || 44x || 85xx || 83xx
722 default n
723
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000724config EISA
725 bool
726
727config SBUS
728 bool
729
730# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
731config MCA
732 bool
733
734config PCI
735 bool "PCI support" if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES)
736 default y if !40x && !CPM2 && !8xx && !APUS && !83xx && !85xx
737 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
738 default PCI_QSPAN if !4xx && !CPM2 && 8xx
739 help
740 Find out whether your system includes a PCI bus. PCI is the name of
741 a bus system, i.e. the way the CPU talks to the other stuff inside
742 your box. If you say Y here, the kernel will include drivers and
743 infrastructure code to support PCI bus devices.
744
745config PCI_DOMAINS
746 bool
747 default PCI
748
749config MPC83xx_PCI2
750 bool " Supprt for 2nd PCI host controller"
751 depends on PCI && MPC834x
752 default y if MPC834x_SYS
753
754config PCI_QSPAN
755 bool "QSpan PCI"
756 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000757 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000758 help
759 Say Y here if you have a system based on a Motorola 8xx-series
760 embedded processor with a QSPAN PCI interface, otherwise say N.
761
762config PCI_8260
763 bool
764 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000765 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000766 default y
767
768config 8260_PCI9
769 bool " Enable workaround for MPC826x erratum PCI 9"
770 depends on PCI_8260 && !ADS8272
771 default y
772
773choice
774 prompt " IDMA channel for PCI 9 workaround"
775 depends on 8260_PCI9
776
777config 8260_PCI9_IDMA1
778 bool "IDMA1"
779
780config 8260_PCI9_IDMA2
781 bool "IDMA2"
782
783config 8260_PCI9_IDMA3
784 bool "IDMA3"
785
786config 8260_PCI9_IDMA4
787 bool "IDMA4"
788
789endchoice
790
791source "drivers/pci/Kconfig"
792
793source "drivers/pcmcia/Kconfig"
794
795source "drivers/pci/hotplug/Kconfig"
796
797endmenu
798
799menu "Advanced setup"
800 depends on PPC32
801
802config ADVANCED_OPTIONS
803 bool "Prompt for advanced kernel configuration options"
804 help
805 This option will enable prompting for a variety of advanced kernel
806 configuration options. These options can cause the kernel to not
807 work if they are set incorrectly, but can be used to optimize certain
808 aspects of kernel memory management.
809
810 Unless you know what you are doing, say N here.
811
812comment "Default settings for advanced configuration options are used"
813 depends on !ADVANCED_OPTIONS
814
815config HIGHMEM_START_BOOL
816 bool "Set high memory pool address"
817 depends on ADVANCED_OPTIONS && HIGHMEM
818 help
819 This option allows you to set the base address of the kernel virtual
820 area used to map high memory pages. This can be useful in
821 optimizing the layout of kernel virtual memory.
822
823 Say N here unless you know what you are doing.
824
825config HIGHMEM_START
826 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
827 default "0xfe000000"
828
829config LOWMEM_SIZE_BOOL
830 bool "Set maximum low memory"
831 depends on ADVANCED_OPTIONS
832 help
833 This option allows you to set the maximum amount of memory which
834 will be used as "low memory", that is, memory which the kernel can
835 access directly, without having to set up a kernel virtual mapping.
836 This can be useful in optimizing the layout of kernel virtual
837 memory.
838
839 Say N here unless you know what you are doing.
840
841config LOWMEM_SIZE
842 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
843 default "0x30000000"
844
845config KERNEL_START_BOOL
846 bool "Set custom kernel base address"
847 depends on ADVANCED_OPTIONS
848 help
849 This option allows you to set the kernel virtual address at which
850 the kernel will map low memory (the kernel image will be linked at
851 this address). This can be useful in optimizing the virtual memory
852 layout of the system.
853
854 Say N here unless you know what you are doing.
855
856config KERNEL_START
857 hex "Virtual address of kernel base" if KERNEL_START_BOOL
858 default "0xc0000000"
859
860config TASK_SIZE_BOOL
861 bool "Set custom user task size"
862 depends on ADVANCED_OPTIONS
863 help
864 This option allows you to set the amount of virtual address space
865 allocated to user tasks. This can be useful in optimizing the
866 virtual memory layout of the system.
867
868 Say N here unless you know what you are doing.
869
870config TASK_SIZE
871 hex "Size of user task space" if TASK_SIZE_BOOL
872 default "0x80000000"
873
874config CONSISTENT_START_BOOL
875 bool "Set custom consistent memory pool address"
876 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
877 help
878 This option allows you to set the base virtual address
879 of the the consistent memory pool. This pool of virtual
880 memory is used to make consistent memory allocations.
881
882config CONSISTENT_START
883 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
884 default "0xff100000" if NOT_COHERENT_CACHE
885
886config CONSISTENT_SIZE_BOOL
887 bool "Set custom consistent memory pool size"
888 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
889 help
890 This option allows you to set the size of the the
891 consistent memory pool. This pool of virtual memory
892 is used to make consistent memory allocations.
893
894config CONSISTENT_SIZE
895 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
896 default "0x00200000" if NOT_COHERENT_CACHE
897
898config BOOT_LOAD_BOOL
899 bool "Set the boot link/load address"
900 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
901 help
902 This option allows you to set the initial load address of the zImage
903 or zImage.initrd file. This can be useful if you are on a board
904 which has a small amount of memory.
905
906 Say N here unless you know what you are doing.
907
908config BOOT_LOAD
909 hex "Link/load address for booting" if BOOT_LOAD_BOOL
910 default "0x00400000" if 40x || 8xx || 8260
911 default "0x01000000" if 44x
912 default "0x00800000"
913
914config PIN_TLB
915 bool "Pinned Kernel TLBs (860 ONLY)"
916 depends on ADVANCED_OPTIONS && 8xx
917endmenu
918
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000919if PPC64
920config KERNEL_START
921 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +1000922 default "0xc000000000000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000923endif
924
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000925source "net/Kconfig"
926
927source "drivers/Kconfig"
928
929source "fs/Kconfig"
930
931# XXX source "arch/ppc/8xx_io/Kconfig"
932
933# XXX source "arch/ppc/8260_io/Kconfig"
934
935source "arch/powerpc/platforms/iseries/Kconfig"
936
937source "lib/Kconfig"
938
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800939menu "Instrumentation Support"
940 depends on EXPERIMENTAL
941
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000942source "arch/powerpc/oprofile/Kconfig"
943
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800944config KPROBES
945 bool "Kprobes (EXPERIMENTAL)"
Paul Mackerras7568cb42005-11-14 17:30:17 +1100946 depends on PPC64
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800947 help
948 Kprobes allows you to trap at almost any kernel address and
949 execute a callback function. register_kprobe() establishes
950 a probepoint and specifies the callback. Kprobes is useful
951 for kernel debugging, non-intrusive instrumentation and testing.
952 If in doubt, say "N".
953endmenu
954
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000955source "arch/powerpc/Kconfig.debug"
956
957source "security/Kconfig"
958
959config KEYS_COMPAT
960 bool
961 depends on COMPAT && KEYS
962 default y
963
964source "crypto/Kconfig"