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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 Mackerras14cf11a2005-09-26 16:04:21 +1000278 default y
279
280config PPC_CHRP
281 bool " Common Hardware Reference Platform (CHRP) based machines"
282 depends on PPC_MULTIPLATFORM && PPC32
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000283 select PPC_I8259
Paul Mackerras25635c72005-10-26 16:36:55 +1000284 select PPC_INDIRECT_PCI
Paul Mackerras033ef332005-10-26 17:05:24 +1000285 select PPC_RTAS
Paul Mackerras830825d2005-10-26 17:16:38 +1000286 select PPC_MPC106
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000287 default y
288
289config PPC_PMAC
290 bool " Apple PowerMac based machines"
291 depends on PPC_MULTIPLATFORM
Paul Mackerras25635c72005-10-26 16:36:55 +1000292 select PPC_INDIRECT_PCI if PPC32
Paul Mackerrasb6a4ce52005-10-26 22:54:17 +1000293 select PPC_MPC106 if PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000294 default y
295
296config PPC_PMAC64
297 bool
298 depends on PPC_PMAC && POWER4
Paul Mackerras35499c02005-10-22 16:02:39 +1000299 select U3_DART
Benjamin Herrenschmidt1beb6a72005-12-14 13:10:10 +1100300 select MPIC_BROKEN_U3
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100301 select GENERIC_TBSYNC
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000302 default y
303
304config PPC_PREP
305 bool " PowerPC Reference Platform (PReP) based machines"
Paul Mackerras5be396b2005-11-14 17:31:55 +1100306 depends on PPC_MULTIPLATFORM && PPC32 && BROKEN
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000307 select PPC_I8259
Paul Mackerras25635c72005-10-26 16:36:55 +1000308 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000309 default y
310
311config PPC_MAPLE
312 depends on PPC_MULTIPLATFORM && PPC64
313 bool " Maple 970FX Evaluation Board"
314 select U3_DART
315 select MPIC_BROKEN_U3
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100316 select GENERIC_TBSYNC
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000317 default n
318 help
319 This option enables support for the Maple 970FX Evaluation Board.
320 For more informations, refer to <http://www.970eval.com>
321
Arnd Bergmannf3f66f52005-10-31 20:08:37 -0500322config PPC_CELL
323 bool " Cell Broadband Processor Architecture"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000324 depends on PPC_MULTIPLATFORM && PPC64
Paul Mackerras033ef332005-10-26 17:05:24 +1000325 select PPC_RTAS
Arnd Bergmannedf03c12005-10-31 20:08:40 -0500326 select MMIO_NVRAM
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000327
328config PPC_OF
Paul Mackerras0a498d92006-01-09 20:17:01 +1100329 def_bool y
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000330
331config XICS
332 depends on PPC_PSERIES
333 bool
334 default y
335
336config U3_DART
337 bool
338 depends on PPC_MULTIPLATFORM && PPC64
339 default n
340
341config MPIC
Paul Mackerrasbbd0abd2005-10-26 21:45:56 +1000342 depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000343 bool
344 default y
345
Paul Mackerras033ef332005-10-26 17:05:24 +1000346config PPC_RTAS
347 bool
348 default n
349
350config RTAS_ERROR_LOGGING
351 bool
352 depends on PPC_RTAS
353 default n
354
Paul Mackerrasf4fcbbe2005-11-03 14:41:19 +1100355config RTAS_PROC
356 bool "Proc interface to RTAS"
Arnd Bergmanne9add2e2005-10-31 20:08:39 -0500357 depends on PPC_RTAS
Paul Mackerrasf4fcbbe2005-11-03 14:41:19 +1100358 default y
359
360config RTAS_FLASH
361 tristate "Firmware flash interface"
362 depends on PPC64 && RTAS_PROC
Arnd Bergmanne9add2e2005-10-31 20:08:39 -0500363
Arnd Bergmannedf03c12005-10-31 20:08:40 -0500364config MMIO_NVRAM
365 bool
366 default n
367
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000368config MPIC_BROKEN_U3
369 bool
370 depends on PPC_MAPLE
371 default y
372
Arnd Bergmannf3f66f52005-10-31 20:08:37 -0500373config CELL_IIC
374 depends on PPC_CELL
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000375 bool
376 default y
377
Michael Ellerman398ab1f2005-12-04 18:39:23 +1100378config CRASH_DUMP
379 bool "kernel crash dumps (EXPERIMENTAL)"
380 depends on PPC_MULTIPLATFORM
381 depends on EXPERIMENTAL
382 help
383 Build a kernel suitable for use as a kdump capture kernel.
384 The kernel will be linked at a different address than normal, and
385 so can only be used for Kdump.
386
387 Don't change this unless you know what you are doing.
388
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000389config IBMVIO
390 depends on PPC_PSERIES || PPC_ISERIES
391 bool
392 default y
393
Heiko J Schickd7a30102005-11-16 08:56:43 +0100394config IBMEBUS
395 depends on PPC_PSERIES
396 bool "Support for GX bus based adapters"
Heiko J Schickd7a30102005-11-16 08:56:43 +0100397 help
398 Bus device driver for GX bus based adapters.
399
Paul Mackerras830825d2005-10-26 17:16:38 +1000400config PPC_MPC106
401 bool
402 default n
403
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100404config GENERIC_TBSYNC
405 bool
406 default y if CONFIG_PPC32 && CONFIG_SMP
407 default n
408
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000409source "drivers/cpufreq/Kconfig"
410
411config CPU_FREQ_PMAC
412 bool "Support for Apple PowerBooks"
413 depends on CPU_FREQ && ADB_PMU && PPC32
414 select CPU_FREQ_TABLE
415 help
416 This adds support for frequency switching on Apple PowerBooks,
417 this currently includes some models of iBook & Titanium
418 PowerBook.
419
Benjamin Herrenschmidt43501472005-11-07 14:27:33 +1100420config CPU_FREQ_PMAC64
421 bool "Support for some Apple G5s"
422 depends on CPU_FREQ && PMAC_SMU && PPC64
423 select CPU_FREQ_TABLE
424 help
425 This adds support for frequency switching on Apple iMac G5,
426 and some of the more recent desktop G5 machines as well.
427
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000428config PPC601_SYNC_FIX
429 bool "Workarounds for PPC601 bugs"
430 depends on 6xx && (PPC_PREP || PPC_PMAC)
431 help
432 Some versions of the PPC601 (the first PowerPC chip) have bugs which
433 mean that extra synchronization instructions are required near
434 certain instructions, typically those that make major changes to the
435 CPU state. These extra instructions reduce performance slightly.
436 If you say N here, these extra instructions will not be included,
437 resulting in a kernel which will run faster but may not run at all
438 on some systems with the PPC601 chip.
439
440 If in doubt, say Y here.
441
442config TAU
443 bool "Thermal Management Support"
444 depends on 6xx
445 help
446 G3 and G4 processors have an on-chip temperature sensor called the
447 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
448 temperature within 2-4 degrees Celsius. This option shows the current
449 on-die temperature in /proc/cpuinfo if the cpu supports it.
450
451 Unfortunately, on some chip revisions, this sensor is very inaccurate
452 and in some cases, does not work at all, so don't assume the cpu
453 temp is actually what /proc/cpuinfo says it is.
454
455config TAU_INT
456 bool "Interrupt driven TAU driver (DANGEROUS)"
457 depends on TAU
458 ---help---
459 The TAU supports an interrupt driven mode which causes an interrupt
460 whenever the temperature goes out of range. This is the fastest way
461 to get notified the temp has exceeded a range. With this option off,
462 a timer is used to re-check the temperature periodically.
463
464 However, on some cpus it appears that the TAU interrupt hardware
465 is buggy and can cause a situation which would lead unexplained hard
466 lockups.
467
468 Unless you are extending the TAU driver, or enjoy kernel/hardware
469 debugging, leave this option off.
470
471config TAU_AVERAGE
472 bool "Average high and low temp"
473 depends on TAU
474 ---help---
475 The TAU hardware can compare the temperature to an upper and lower
476 bound. The default behavior is to show both the upper and lower
477 bound in /proc/cpuinfo. If the range is large, the temperature is
478 either changing a lot, or the TAU hardware is broken (likely on some
479 G4's). If the range is small (around 4 degrees), the temperature is
480 relatively stable. If you say Y here, a single temperature value,
481 halfway between the upper and lower bounds, will be reported in
482 /proc/cpuinfo.
483
484 If in doubt, say N here.
485endmenu
486
487source arch/powerpc/platforms/embedded6xx/Kconfig
488source arch/powerpc/platforms/4xx/Kconfig
489source arch/powerpc/platforms/85xx/Kconfig
490source arch/powerpc/platforms/8xx/Kconfig
Arnd Bergmann67207b92005-11-15 15:53:48 -0500491source arch/powerpc/platforms/cell/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000492
493menu "Kernel options"
494
495config HIGHMEM
496 bool "High memory support"
497 depends on PPC32
498
499source kernel/Kconfig.hz
500source kernel/Kconfig.preempt
501source "fs/Kconfig.binfmt"
502
503# We optimistically allocate largepages from the VM, so make the limit
504# large enough (16MB). This badly named config option is actually
505# max order + 1
506config FORCE_MAX_ZONEORDER
507 int
508 depends on PPC64
Mike Kravetz02864862005-11-07 13:48:59 -0800509 default "9" if PPC_64K_PAGES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000510 default "13"
511
512config MATH_EMULATION
513 bool "Math emulation"
514 depends on 4xx || 8xx || E200 || E500
515 ---help---
516 Some PowerPC chips designed for embedded applications do not have
517 a floating-point unit and therefore do not implement the
518 floating-point instructions in the PowerPC instruction set. If you
519 say Y here, the kernel will include code to emulate a floating-point
520 unit, which will allow programs that use floating-point
521 instructions to run.
522
523config IOMMU_VMERGE
524 bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
525 depends on EXPERIMENTAL && PPC64
526 default n
527 help
528 Cause IO segments sent to a device for DMA to be merged virtually
529 by the IOMMU when they happen to have been allocated contiguously.
530 This doesn't add pressure to the IOMMU allocator. However, some
531 drivers don't support getting large merged segments coming back
532 from *_map_sg(). Say Y if you know the drivers you are using are
533 properly handling this case.
534
535config HOTPLUG_CPU
536 bool "Support for enabling/disabling CPUs"
537 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
538 ---help---
539 Say Y here to be able to disable and re-enable individual
540 CPUs at runtime on SMP machines.
541
542 Say N if you are unsure.
543
544config KEXEC
545 bool "kexec system call (EXPERIMENTAL)"
546 depends on PPC_MULTIPLATFORM && EXPERIMENTAL
547 help
548 kexec is a system call that implements the ability to shutdown your
549 current kernel, and to start another kernel. It is like a reboot
550 but it is indepedent of the system firmware. And like a reboot
551 you can start any kernel with it, not just Linux.
552
553 The name comes from the similiarity to the exec system call.
554
555 It is an ongoing process to be certain the hardware in a machine
556 is properly shutdown, so do not be surprised if this code does not
557 initially work for you. It may help to enable device hotplugging
558 support. As of this writing the exact hardware interface is
559 strongly in flux, so no good recommendation can be made.
560
561config EMBEDDEDBOOT
562 bool
563 depends on 8xx || 8260
564 default y
565
566config PC_KEYBOARD
567 bool "PC PS/2 style Keyboard"
568 depends on 4xx || CPM2
569
570config PPCBUG_NVRAM
571 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
572 default y if PPC_PREP
573
574config IRQ_ALL_CPUS
575 bool "Distribute interrupts on all CPUs by default"
576 depends on SMP && !MV64360
577 help
578 This option gives the kernel permission to distribute IRQs across
579 multiple CPUs. Saying N here will route all IRQs to the first
580 CPU. Generally saying Y is safe, although some problems have been
581 reported with SMP Power Macintoshes with this option enabled.
582
583source "arch/powerpc/platforms/pseries/Kconfig"
584
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700585config NUMA
586 bool "NUMA support"
587 depends on PPC64
588 default y if SMP && PPC_PSERIES
589
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000590config ARCH_SELECT_MEMORY_MODEL
591 def_bool y
592 depends on PPC64
593
594config ARCH_FLATMEM_ENABLE
Andy Whitcroft9100b202005-11-29 19:20:55 +0000595 def_bool y
596 depends on (PPC64 && !NUMA) || PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000597
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000598config ARCH_SPARSEMEM_ENABLE
599 def_bool y
Andy Whitcroft9100b202005-11-29 19:20:55 +0000600 depends on PPC64
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100601
602config ARCH_SPARSEMEM_DEFAULT
603 def_bool y
604 depends on SMP && PPC_PSERIES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000605
606source "mm/Kconfig"
607
608config HAVE_ARCH_EARLY_PFN_TO_NID
609 def_bool y
610 depends on NEED_MULTIPLE_NODES
611
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800612config ARCH_MEMORY_PROBE
613 def_bool y
614 depends on MEMORY_HOTPLUG
615
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100616config PPC_64K_PAGES
617 bool "64k page size"
Benjamin Herrenschmidt863c84b2005-11-07 00:57:58 -0800618 depends on PPC64
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100619 help
620 This option changes the kernel logical page size to 64k. On machines
621 without processor support for 64k pages, the kernel will simulate
622 them by loading each individual 4k page on demand transparently,
623 while on hardware with such support, it will be used to map
624 normal application pages.
625
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000626config SCHED_SMT
627 bool "SMT (Hyperthreading) scheduler support"
628 depends on PPC64 && SMP
629 default off
630 help
631 SMT scheduler support improves the CPU scheduler's decision making
632 when dealing with POWER5 cpus at a cost of slightly increased
633 overhead in some places. If unsure say N here.
634
635config PROC_DEVICETREE
Paul Mackerras5f296752005-10-17 20:14:59 +1000636 bool "Support for device tree in /proc"
637 depends on PROC_FS
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000638 help
639 This option adds a device-tree directory under /proc which contains
640 an image of the device tree that the kernel copies from Open
Paul Mackerras5f296752005-10-17 20:14:59 +1000641 Firmware or other boot firmware. If unsure, say Y here.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000642
643source "arch/powerpc/platforms/prep/Kconfig"
644
645config CMDLINE_BOOL
646 bool "Default bootloader kernel arguments"
647 depends on !PPC_ISERIES
648
649config CMDLINE
650 string "Initial kernel command string"
651 depends on CMDLINE_BOOL
652 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
653 help
654 On some platforms, there is currently no way for the boot loader to
655 pass arguments to the kernel. For these platforms, you can supply
656 some command-line options at build time by entering them here. In
657 most cases you will need to specify the root device here.
658
659if !44x || BROKEN
660source kernel/power/Kconfig
661endif
662
663config SECCOMP
664 bool "Enable seccomp to safely compute untrusted bytecode"
665 depends on PROC_FS
666 default y
667 help
668 This kernel feature is useful for number crunching applications
669 that may need to compute untrusted bytecode during their
670 execution. By using pipes or other transports made available to
671 the process as file descriptors supporting the read/write
672 syscalls, it's possible to isolate those applications in
673 their own address space using seccomp. Once seccomp is
674 enabled via /proc/<pid>/seccomp, it cannot be disabled
675 and the task is only allowed to execute a few safe syscalls
676 defined by each seccomp mode.
677
678 If unsure, say Y. Only embedded should say N here.
679
680endmenu
681
682config ISA_DMA_API
683 bool
684 default y
685
686menu "Bus options"
687
688config ISA
689 bool "Support for ISA-bus hardware"
690 depends on PPC_PREP || PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000691 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000692 help
693 Find out whether you have ISA slots on your motherboard. ISA is the
694 name of a bus system, i.e. the way the CPU talks to the other stuff
695 inside your box. If you have an Apple machine, say N here; if you
696 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
697 you have an embedded board, consult your board documentation.
698
699config GENERIC_ISA_DMA
700 bool
701 depends on PPC64 || POWER4 || 6xx && !CPM2
702 default y
703
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000704config PPC_I8259
705 bool
706 default y if 85xx
707 default n
708
Paul Mackerras25635c72005-10-26 16:36:55 +1000709config PPC_INDIRECT_PCI
710 bool
711 depends on PCI
712 default y if 40x || 44x || 85xx || 83xx
713 default n
714
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000715config EISA
716 bool
717
718config SBUS
719 bool
720
721# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
722config MCA
723 bool
724
725config PCI
726 bool "PCI support" if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES)
727 default y if !40x && !CPM2 && !8xx && !APUS && !83xx && !85xx
728 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
729 default PCI_QSPAN if !4xx && !CPM2 && 8xx
730 help
731 Find out whether your system includes a PCI bus. PCI is the name of
732 a bus system, i.e. the way the CPU talks to the other stuff inside
733 your box. If you say Y here, the kernel will include drivers and
734 infrastructure code to support PCI bus devices.
735
736config PCI_DOMAINS
737 bool
738 default PCI
739
740config MPC83xx_PCI2
741 bool " Supprt for 2nd PCI host controller"
742 depends on PCI && MPC834x
743 default y if MPC834x_SYS
744
745config PCI_QSPAN
746 bool "QSpan PCI"
747 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000748 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000749 help
750 Say Y here if you have a system based on a Motorola 8xx-series
751 embedded processor with a QSPAN PCI interface, otherwise say N.
752
753config PCI_8260
754 bool
755 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000756 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000757 default y
758
759config 8260_PCI9
760 bool " Enable workaround for MPC826x erratum PCI 9"
761 depends on PCI_8260 && !ADS8272
762 default y
763
764choice
765 prompt " IDMA channel for PCI 9 workaround"
766 depends on 8260_PCI9
767
768config 8260_PCI9_IDMA1
769 bool "IDMA1"
770
771config 8260_PCI9_IDMA2
772 bool "IDMA2"
773
774config 8260_PCI9_IDMA3
775 bool "IDMA3"
776
777config 8260_PCI9_IDMA4
778 bool "IDMA4"
779
780endchoice
781
782source "drivers/pci/Kconfig"
783
784source "drivers/pcmcia/Kconfig"
785
786source "drivers/pci/hotplug/Kconfig"
787
788endmenu
789
790menu "Advanced setup"
791 depends on PPC32
792
793config ADVANCED_OPTIONS
794 bool "Prompt for advanced kernel configuration options"
795 help
796 This option will enable prompting for a variety of advanced kernel
797 configuration options. These options can cause the kernel to not
798 work if they are set incorrectly, but can be used to optimize certain
799 aspects of kernel memory management.
800
801 Unless you know what you are doing, say N here.
802
803comment "Default settings for advanced configuration options are used"
804 depends on !ADVANCED_OPTIONS
805
806config HIGHMEM_START_BOOL
807 bool "Set high memory pool address"
808 depends on ADVANCED_OPTIONS && HIGHMEM
809 help
810 This option allows you to set the base address of the kernel virtual
811 area used to map high memory pages. This can be useful in
812 optimizing the layout of kernel virtual memory.
813
814 Say N here unless you know what you are doing.
815
816config HIGHMEM_START
817 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
818 default "0xfe000000"
819
820config LOWMEM_SIZE_BOOL
821 bool "Set maximum low memory"
822 depends on ADVANCED_OPTIONS
823 help
824 This option allows you to set the maximum amount of memory which
825 will be used as "low memory", that is, memory which the kernel can
826 access directly, without having to set up a kernel virtual mapping.
827 This can be useful in optimizing the layout of kernel virtual
828 memory.
829
830 Say N here unless you know what you are doing.
831
832config LOWMEM_SIZE
833 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
834 default "0x30000000"
835
836config KERNEL_START_BOOL
837 bool "Set custom kernel base address"
838 depends on ADVANCED_OPTIONS
839 help
840 This option allows you to set the kernel virtual address at which
841 the kernel will map low memory (the kernel image will be linked at
842 this address). This can be useful in optimizing the virtual memory
843 layout of the system.
844
845 Say N here unless you know what you are doing.
846
847config KERNEL_START
848 hex "Virtual address of kernel base" if KERNEL_START_BOOL
849 default "0xc0000000"
850
851config TASK_SIZE_BOOL
852 bool "Set custom user task size"
853 depends on ADVANCED_OPTIONS
854 help
855 This option allows you to set the amount of virtual address space
856 allocated to user tasks. This can be useful in optimizing the
857 virtual memory layout of the system.
858
859 Say N here unless you know what you are doing.
860
861config TASK_SIZE
862 hex "Size of user task space" if TASK_SIZE_BOOL
863 default "0x80000000"
864
865config CONSISTENT_START_BOOL
866 bool "Set custom consistent memory pool address"
867 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
868 help
869 This option allows you to set the base virtual address
870 of the the consistent memory pool. This pool of virtual
871 memory is used to make consistent memory allocations.
872
873config CONSISTENT_START
874 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
875 default "0xff100000" if NOT_COHERENT_CACHE
876
877config CONSISTENT_SIZE_BOOL
878 bool "Set custom consistent memory pool size"
879 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
880 help
881 This option allows you to set the size of the the
882 consistent memory pool. This pool of virtual memory
883 is used to make consistent memory allocations.
884
885config CONSISTENT_SIZE
886 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
887 default "0x00200000" if NOT_COHERENT_CACHE
888
889config BOOT_LOAD_BOOL
890 bool "Set the boot link/load address"
891 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
892 help
893 This option allows you to set the initial load address of the zImage
894 or zImage.initrd file. This can be useful if you are on a board
895 which has a small amount of memory.
896
897 Say N here unless you know what you are doing.
898
899config BOOT_LOAD
900 hex "Link/load address for booting" if BOOT_LOAD_BOOL
901 default "0x00400000" if 40x || 8xx || 8260
902 default "0x01000000" if 44x
903 default "0x00800000"
904
905config PIN_TLB
906 bool "Pinned Kernel TLBs (860 ONLY)"
907 depends on ADVANCED_OPTIONS && 8xx
908endmenu
909
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000910if PPC64
911config KERNEL_START
912 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +1000913 default "0xc000000000000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000914endif
915
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000916source "net/Kconfig"
917
918source "drivers/Kconfig"
919
920source "fs/Kconfig"
921
922# XXX source "arch/ppc/8xx_io/Kconfig"
923
924# XXX source "arch/ppc/8260_io/Kconfig"
925
926source "arch/powerpc/platforms/iseries/Kconfig"
927
928source "lib/Kconfig"
929
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800930menu "Instrumentation Support"
931 depends on EXPERIMENTAL
932
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000933source "arch/powerpc/oprofile/Kconfig"
934
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800935config KPROBES
936 bool "Kprobes (EXPERIMENTAL)"
Paul Mackerras7568cb42005-11-14 17:30:17 +1100937 depends on PPC64
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800938 help
939 Kprobes allows you to trap at almost any kernel address and
940 execute a callback function. register_kprobe() establishes
941 a probepoint and specifies the callback. Kprobes is useful
942 for kernel debugging, non-intrusive instrumentation and testing.
943 If in doubt, say "N".
944endmenu
945
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000946source "arch/powerpc/Kconfig.debug"
947
948source "security/Kconfig"
949
950config KEYS_COMPAT
951 bool
952 depends on COMPAT && KEYS
953 default y
954
955source "crypto/Kconfig"