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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
29config UID16
30 bool
31
32config GENERIC_HARDIRQS
33 bool
34 default y
35
36config RWSEM_GENERIC_SPINLOCK
37 bool
38
39config RWSEM_XCHGADD_ALGORITHM
40 bool
41 default y
42
43config GENERIC_CALIBRATE_DELAY
44 bool
45 default y
46
47config PPC
48 bool
49 default y
50
51config EARLY_PRINTK
52 bool
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +110053 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +100054
55config COMPAT
56 bool
57 default y if PPC64
58
59config SYSVIPC_COMPAT
60 bool
61 depends on COMPAT && SYSVIPC
62 default y
63
64# All PPC32s use generic nvram driver through ppc_md
65config GENERIC_NVRAM
66 bool
67 default y if PPC32
68
69config SCHED_NO_NO_OMIT_FRAME_POINTER
70 bool
71 default y
72
73config ARCH_MAY_HAVE_PC_FDC
74 bool
75 default y
76
77menu "Processor support"
78choice
79 prompt "Processor Type"
80 depends on PPC32
81 default 6xx
82
83config 6xx
84 bool "6xx/7xx/74xx"
85 select PPC_FPU
86 help
87 There are four families of PowerPC chips supported. The more common
88 types (601, 603, 604, 740, 750, 7400), the Motorola embedded
89 versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
90 embedded versions (403 and 405) and the high end 64 bit Power
91 processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
92
93 Unless you are building a kernel for one of the embedded processor
94 systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx.
95 Note that the kernel runs in 32-bit mode even on 64-bit chips.
96
97config PPC_52xx
98 bool "Freescale 52xx"
99
100config PPC_82xx
101 bool "Freescale 82xx"
102
103config PPC_83xx
104 bool "Freescale 83xx"
105
106config 40x
107 bool "AMCC 40x"
108
109config 44x
110 bool "AMCC 44x"
111
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000112config 8xx
113 bool "Freescale 8xx"
114
115config E200
116 bool "Freescale e200"
117
118config E500
119 bool "Freescale e500"
120endchoice
121
122config POWER4_ONLY
123 bool "Optimize for POWER4"
Paul Mackerras187a0062005-10-06 12:49:05 +1000124 depends on PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000125 default n
126 ---help---
127 Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
128 The resulting binary will not work on POWER3 or RS64 processors
129 when compiled with binutils 2.15 or later.
130
131config POWER3
132 bool
Paul Mackerras187a0062005-10-06 12:49:05 +1000133 depends on PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000134 default y if !POWER4_ONLY
135
136config POWER4
Paul Mackerras187a0062005-10-06 12:49:05 +1000137 depends on PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000138 def_bool y
139
140config PPC_FPU
Paul Mackerras187a0062005-10-06 12:49:05 +1000141 bool
142 default y if PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000143
144config BOOKE
145 bool
146 depends on E200 || E500
147 default y
148
149config FSL_BOOKE
150 bool
151 depends on E200 || E500
152 default y
153
154config PTE_64BIT
155 bool
156 depends on 44x || E500
157 default y if 44x
158 default y if E500 && PHYS_64BIT
159
160config PHYS_64BIT
161 bool 'Large physical address support' if E500
162 depends on 44x || E500
163 default y if 44x
164 ---help---
165 This option enables kernel support for larger than 32-bit physical
166 addresses. This features is not be available on all e500 cores.
167
168 If in doubt, say N here.
169
170config ALTIVEC
171 bool "AltiVec Support"
172 depends on 6xx || POWER4
173 ---help---
174 This option enables kernel support for the Altivec extensions to the
175 PowerPC processor. The kernel currently supports saving and restoring
176 altivec registers, and turning on the 'altivec enable' bit so user
177 processes can execute altivec instructions.
178
179 This option is only usefully if you have a processor that supports
180 altivec (G4, otherwise known as 74xx series), but does not have
181 any affect on a non-altivec cpu (it does, however add code to the
182 kernel).
183
184 If in doubt, say Y here.
185
186config SPE
187 bool "SPE Support"
188 depends on E200 || E500
189 ---help---
190 This option enables kernel support for the Signal Processing
191 Extensions (SPE) to the PowerPC processor. The kernel currently
192 supports saving and restoring SPE registers, and turning on the
193 'spe enable' bit so user processes can execute SPE instructions.
194
195 This option is only useful if you have a processor that supports
196 SPE (e500, otherwise known as 85xx series), but does not have any
197 effect on a non-spe cpu (it does, however add code to the kernel).
198
199 If in doubt, say Y here.
200
201config PPC_STD_MMU
202 bool
203 depends on 6xx || POWER3 || POWER4 || PPC64
204 default y
205
206config PPC_STD_MMU_32
207 def_bool y
208 depends on PPC_STD_MMU && PPC32
209
210config SMP
211 depends on PPC_STD_MMU
212 bool "Symmetric multi-processing support"
213 ---help---
214 This enables support for systems with more than one CPU. If you have
215 a system with only one CPU, say N. If you have a system with more
216 than one CPU, say Y. Note that the kernel does not currently
217 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
218 since they have inadequate hardware support for multiprocessor
219 operation.
220
221 If you say N here, the kernel will run on single and multiprocessor
222 machines, but will use only one CPU of a multiprocessor machine. If
223 you say Y here, the kernel will run on single-processor machines.
224 On a single-processor machine, the kernel will run faster if you say
225 N here.
226
227 If you don't know what to do here, say N.
228
229config NR_CPUS
Olaf Heringe8a167a2005-12-01 21:10:10 +0100230 int "Maximum number of CPUs (2-128)"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000231 range 2 128
232 depends on SMP
233 default "32" if PPC64
234 default "4"
235
236config NOT_COHERENT_CACHE
237 bool
238 depends on 4xx || 8xx || E200
239 default y
240endmenu
241
242source "init/Kconfig"
243
244menu "Platform support"
245 depends on PPC64 || 6xx
246
247choice
248 prompt "Machine type"
249 default PPC_MULTIPLATFORM
250
251config PPC_MULTIPLATFORM
252 bool "Generic desktop/server/laptop"
253 help
254 Select this option if configuring for an IBM pSeries or
255 RS/6000 machine, an Apple machine, or a PReP, CHRP,
256 Maple or Cell-based machine.
257
258config PPC_ISERIES
259 bool "IBM Legacy iSeries"
260 depends on PPC64
261
262config EMBEDDED6xx
263 bool "Embedded 6xx/7xx/7xxx-based board"
Paul Mackerras5be396b2005-11-14 17:31:55 +1100264 depends on PPC32 && BROKEN
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000265
266config APUS
267 bool "Amiga-APUS"
268 depends on PPC32 && BROKEN
269 help
270 Select APUS if configuring for a PowerUP Amiga.
271 More information is available at:
272 <http://linux-apus.sourceforge.net/>.
273endchoice
274
275config PPC_PSERIES
276 depends on PPC_MULTIPLATFORM && PPC64
277 bool " IBM pSeries & new (POWER5-based) iSeries"
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000278 select PPC_I8259
Paul Mackerras033ef332005-10-26 17:05:24 +1000279 select PPC_RTAS
280 select RTAS_ERROR_LOGGING
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000281 default y
282
283config PPC_CHRP
284 bool " Common Hardware Reference Platform (CHRP) based machines"
285 depends on PPC_MULTIPLATFORM && PPC32
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000286 select PPC_I8259
Paul Mackerras25635c72005-10-26 16:36:55 +1000287 select PPC_INDIRECT_PCI
Paul Mackerras033ef332005-10-26 17:05:24 +1000288 select PPC_RTAS
Paul Mackerras830825d2005-10-26 17:16:38 +1000289 select PPC_MPC106
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000290 default y
291
292config PPC_PMAC
293 bool " Apple PowerMac based machines"
294 depends on PPC_MULTIPLATFORM
Paul Mackerras25635c72005-10-26 16:36:55 +1000295 select PPC_INDIRECT_PCI if PPC32
Paul Mackerrasb6a4ce52005-10-26 22:54:17 +1000296 select PPC_MPC106 if PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000297 default y
298
299config PPC_PMAC64
300 bool
301 depends on PPC_PMAC && POWER4
Paul Mackerras35499c02005-10-22 16:02:39 +1000302 select U3_DART
Benjamin Herrenschmidt1beb6a72005-12-14 13:10:10 +1100303 select MPIC_BROKEN_U3
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100304 select GENERIC_TBSYNC
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000305 default y
306
307config PPC_PREP
308 bool " PowerPC Reference Platform (PReP) based machines"
Paul Mackerras5be396b2005-11-14 17:31:55 +1100309 depends on PPC_MULTIPLATFORM && PPC32 && BROKEN
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000310 select PPC_I8259
Paul Mackerras25635c72005-10-26 16:36:55 +1000311 select PPC_INDIRECT_PCI
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 Mackerras14cf11a2005-09-26 16:04:21 +1000320 default n
321 help
322 This option enables support for the Maple 970FX Evaluation Board.
323 For more informations, refer to <http://www.970eval.com>
324
Arnd Bergmannf3f66f52005-10-31 20:08:37 -0500325config PPC_CELL
326 bool " Cell Broadband Processor Architecture"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000327 depends on PPC_MULTIPLATFORM && PPC64
Paul Mackerras033ef332005-10-26 17:05:24 +1000328 select PPC_RTAS
Arnd Bergmannedf03c12005-10-31 20:08:40 -0500329 select MMIO_NVRAM
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000330
331config PPC_OF
332 bool
Paul Mackerras187a0062005-10-06 12:49:05 +1000333 depends on PPC_MULTIPLATFORM # for now
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000334 default y
335
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
Arnd Bergmannf3f66f52005-10-31 20:08:37 -0500378config CELL_IIC
379 depends on PPC_CELL
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000380 bool
381 default y
382
Michael Ellerman398ab1f2005-12-04 18:39:23 +1100383config CRASH_DUMP
384 bool "kernel crash dumps (EXPERIMENTAL)"
385 depends on PPC_MULTIPLATFORM
386 depends on EXPERIMENTAL
387 help
388 Build a kernel suitable for use as a kdump capture kernel.
389 The kernel will be linked at a different address than normal, and
390 so can only be used for Kdump.
391
392 Don't change this unless you know what you are doing.
393
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000394config IBMVIO
395 depends on PPC_PSERIES || PPC_ISERIES
396 bool
397 default y
398
Heiko J Schickd7a30102005-11-16 08:56:43 +0100399config IBMEBUS
400 depends on PPC_PSERIES
401 bool "Support for GX bus based adapters"
402 default y
403 help
404 Bus device driver for GX bus based adapters.
405
Paul Mackerras830825d2005-10-26 17:16:38 +1000406config PPC_MPC106
407 bool
408 default n
409
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100410config GENERIC_TBSYNC
411 bool
412 default y if CONFIG_PPC32 && CONFIG_SMP
413 default n
414
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000415source "drivers/cpufreq/Kconfig"
416
417config CPU_FREQ_PMAC
418 bool "Support for Apple PowerBooks"
419 depends on CPU_FREQ && ADB_PMU && PPC32
420 select CPU_FREQ_TABLE
421 help
422 This adds support for frequency switching on Apple PowerBooks,
423 this currently includes some models of iBook & Titanium
424 PowerBook.
425
Benjamin Herrenschmidt43501472005-11-07 14:27:33 +1100426config CPU_FREQ_PMAC64
427 bool "Support for some Apple G5s"
428 depends on CPU_FREQ && PMAC_SMU && PPC64
429 select CPU_FREQ_TABLE
430 help
431 This adds support for frequency switching on Apple iMac G5,
432 and some of the more recent desktop G5 machines as well.
433
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000434config PPC601_SYNC_FIX
435 bool "Workarounds for PPC601 bugs"
436 depends on 6xx && (PPC_PREP || PPC_PMAC)
437 help
438 Some versions of the PPC601 (the first PowerPC chip) have bugs which
439 mean that extra synchronization instructions are required near
440 certain instructions, typically those that make major changes to the
441 CPU state. These extra instructions reduce performance slightly.
442 If you say N here, these extra instructions will not be included,
443 resulting in a kernel which will run faster but may not run at all
444 on some systems with the PPC601 chip.
445
446 If in doubt, say Y here.
447
448config TAU
449 bool "Thermal Management Support"
450 depends on 6xx
451 help
452 G3 and G4 processors have an on-chip temperature sensor called the
453 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
454 temperature within 2-4 degrees Celsius. This option shows the current
455 on-die temperature in /proc/cpuinfo if the cpu supports it.
456
457 Unfortunately, on some chip revisions, this sensor is very inaccurate
458 and in some cases, does not work at all, so don't assume the cpu
459 temp is actually what /proc/cpuinfo says it is.
460
461config TAU_INT
462 bool "Interrupt driven TAU driver (DANGEROUS)"
463 depends on TAU
464 ---help---
465 The TAU supports an interrupt driven mode which causes an interrupt
466 whenever the temperature goes out of range. This is the fastest way
467 to get notified the temp has exceeded a range. With this option off,
468 a timer is used to re-check the temperature periodically.
469
470 However, on some cpus it appears that the TAU interrupt hardware
471 is buggy and can cause a situation which would lead unexplained hard
472 lockups.
473
474 Unless you are extending the TAU driver, or enjoy kernel/hardware
475 debugging, leave this option off.
476
477config TAU_AVERAGE
478 bool "Average high and low temp"
479 depends on TAU
480 ---help---
481 The TAU hardware can compare the temperature to an upper and lower
482 bound. The default behavior is to show both the upper and lower
483 bound in /proc/cpuinfo. If the range is large, the temperature is
484 either changing a lot, or the TAU hardware is broken (likely on some
485 G4's). If the range is small (around 4 degrees), the temperature is
486 relatively stable. If you say Y here, a single temperature value,
487 halfway between the upper and lower bounds, will be reported in
488 /proc/cpuinfo.
489
490 If in doubt, say N here.
491endmenu
492
493source arch/powerpc/platforms/embedded6xx/Kconfig
494source arch/powerpc/platforms/4xx/Kconfig
495source arch/powerpc/platforms/85xx/Kconfig
496source arch/powerpc/platforms/8xx/Kconfig
Arnd Bergmann67207b92005-11-15 15:53:48 -0500497source arch/powerpc/platforms/cell/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000498
499menu "Kernel options"
500
501config HIGHMEM
502 bool "High memory support"
503 depends on PPC32
504
505source kernel/Kconfig.hz
506source kernel/Kconfig.preempt
507source "fs/Kconfig.binfmt"
508
509# We optimistically allocate largepages from the VM, so make the limit
510# large enough (16MB). This badly named config option is actually
511# max order + 1
512config FORCE_MAX_ZONEORDER
513 int
514 depends on PPC64
Mike Kravetz02864862005-11-07 13:48:59 -0800515 default "9" if PPC_64K_PAGES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000516 default "13"
517
518config MATH_EMULATION
519 bool "Math emulation"
520 depends on 4xx || 8xx || E200 || E500
521 ---help---
522 Some PowerPC chips designed for embedded applications do not have
523 a floating-point unit and therefore do not implement the
524 floating-point instructions in the PowerPC instruction set. If you
525 say Y here, the kernel will include code to emulate a floating-point
526 unit, which will allow programs that use floating-point
527 instructions to run.
528
529config IOMMU_VMERGE
530 bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
531 depends on EXPERIMENTAL && PPC64
532 default n
533 help
534 Cause IO segments sent to a device for DMA to be merged virtually
535 by the IOMMU when they happen to have been allocated contiguously.
536 This doesn't add pressure to the IOMMU allocator. However, some
537 drivers don't support getting large merged segments coming back
538 from *_map_sg(). Say Y if you know the drivers you are using are
539 properly handling this case.
540
541config HOTPLUG_CPU
542 bool "Support for enabling/disabling CPUs"
543 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
544 ---help---
545 Say Y here to be able to disable and re-enable individual
546 CPUs at runtime on SMP machines.
547
548 Say N if you are unsure.
549
550config KEXEC
551 bool "kexec system call (EXPERIMENTAL)"
552 depends on PPC_MULTIPLATFORM && EXPERIMENTAL
553 help
554 kexec is a system call that implements the ability to shutdown your
555 current kernel, and to start another kernel. It is like a reboot
556 but it is indepedent of the system firmware. And like a reboot
557 you can start any kernel with it, not just Linux.
558
559 The name comes from the similiarity to the exec system call.
560
561 It is an ongoing process to be certain the hardware in a machine
562 is properly shutdown, so do not be surprised if this code does not
563 initially work for you. It may help to enable device hotplugging
564 support. As of this writing the exact hardware interface is
565 strongly in flux, so no good recommendation can be made.
566
567config EMBEDDEDBOOT
568 bool
569 depends on 8xx || 8260
570 default y
571
572config PC_KEYBOARD
573 bool "PC PS/2 style Keyboard"
574 depends on 4xx || CPM2
575
576config PPCBUG_NVRAM
577 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
578 default y if PPC_PREP
579
580config IRQ_ALL_CPUS
581 bool "Distribute interrupts on all CPUs by default"
582 depends on SMP && !MV64360
583 help
584 This option gives the kernel permission to distribute IRQs across
585 multiple CPUs. Saying N here will route all IRQs to the first
586 CPU. Generally saying Y is safe, although some problems have been
587 reported with SMP Power Macintoshes with this option enabled.
588
589source "arch/powerpc/platforms/pseries/Kconfig"
590
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700591config NUMA
592 bool "NUMA support"
593 depends on PPC64
594 default y if SMP && PPC_PSERIES
595
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000596config ARCH_SELECT_MEMORY_MODEL
597 def_bool y
598 depends on PPC64
599
600config ARCH_FLATMEM_ENABLE
Andy Whitcroft9100b202005-11-29 19:20:55 +0000601 def_bool y
602 depends on (PPC64 && !NUMA) || PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000603
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000604config ARCH_SPARSEMEM_ENABLE
605 def_bool y
Andy Whitcroft9100b202005-11-29 19:20:55 +0000606 depends on PPC64
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100607
608config ARCH_SPARSEMEM_DEFAULT
609 def_bool y
610 depends on SMP && PPC_PSERIES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000611
612source "mm/Kconfig"
613
614config HAVE_ARCH_EARLY_PFN_TO_NID
615 def_bool y
616 depends on NEED_MULTIPLE_NODES
617
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800618config ARCH_MEMORY_PROBE
619 def_bool y
620 depends on MEMORY_HOTPLUG
621
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100622config PPC_64K_PAGES
623 bool "64k page size"
Benjamin Herrenschmidt863c84b2005-11-07 00:57:58 -0800624 depends on PPC64
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100625 help
626 This option changes the kernel logical page size to 64k. On machines
627 without processor support for 64k pages, the kernel will simulate
628 them by loading each individual 4k page on demand transparently,
629 while on hardware with such support, it will be used to map
630 normal application pages.
631
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000632config SCHED_SMT
633 bool "SMT (Hyperthreading) scheduler support"
634 depends on PPC64 && SMP
635 default off
636 help
637 SMT scheduler support improves the CPU scheduler's decision making
638 when dealing with POWER5 cpus at a cost of slightly increased
639 overhead in some places. If unsure say N here.
640
641config PROC_DEVICETREE
Paul Mackerras5f296752005-10-17 20:14:59 +1000642 bool "Support for device tree in /proc"
643 depends on PROC_FS
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000644 help
645 This option adds a device-tree directory under /proc which contains
646 an image of the device tree that the kernel copies from Open
Paul Mackerras5f296752005-10-17 20:14:59 +1000647 Firmware or other boot firmware. If unsure, say Y here.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000648
649source "arch/powerpc/platforms/prep/Kconfig"
650
651config CMDLINE_BOOL
652 bool "Default bootloader kernel arguments"
653 depends on !PPC_ISERIES
654
655config CMDLINE
656 string "Initial kernel command string"
657 depends on CMDLINE_BOOL
658 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
659 help
660 On some platforms, there is currently no way for the boot loader to
661 pass arguments to the kernel. For these platforms, you can supply
662 some command-line options at build time by entering them here. In
663 most cases you will need to specify the root device here.
664
665if !44x || BROKEN
666source kernel/power/Kconfig
667endif
668
669config SECCOMP
670 bool "Enable seccomp to safely compute untrusted bytecode"
671 depends on PROC_FS
672 default y
673 help
674 This kernel feature is useful for number crunching applications
675 that may need to compute untrusted bytecode during their
676 execution. By using pipes or other transports made available to
677 the process as file descriptors supporting the read/write
678 syscalls, it's possible to isolate those applications in
679 their own address space using seccomp. Once seccomp is
680 enabled via /proc/<pid>/seccomp, it cannot be disabled
681 and the task is only allowed to execute a few safe syscalls
682 defined by each seccomp mode.
683
684 If unsure, say Y. Only embedded should say N here.
685
686endmenu
687
688config ISA_DMA_API
689 bool
690 default y
691
692menu "Bus options"
693
694config ISA
695 bool "Support for ISA-bus hardware"
696 depends on PPC_PREP || PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000697 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000698 help
699 Find out whether you have ISA slots on your motherboard. ISA is the
700 name of a bus system, i.e. the way the CPU talks to the other stuff
701 inside your box. If you have an Apple machine, say N here; if you
702 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
703 you have an embedded board, consult your board documentation.
704
705config GENERIC_ISA_DMA
706 bool
707 depends on PPC64 || POWER4 || 6xx && !CPM2
708 default y
709
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000710config PPC_I8259
711 bool
712 default y if 85xx
713 default n
714
Paul Mackerras25635c72005-10-26 16:36:55 +1000715config PPC_INDIRECT_PCI
716 bool
717 depends on PCI
718 default y if 40x || 44x || 85xx || 83xx
719 default n
720
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000721config EISA
722 bool
723
724config SBUS
725 bool
726
727# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
728config MCA
729 bool
730
731config PCI
732 bool "PCI support" if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES)
733 default y if !40x && !CPM2 && !8xx && !APUS && !83xx && !85xx
734 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
735 default PCI_QSPAN if !4xx && !CPM2 && 8xx
736 help
737 Find out whether your system includes a PCI bus. PCI is the name of
738 a bus system, i.e. the way the CPU talks to the other stuff inside
739 your box. If you say Y here, the kernel will include drivers and
740 infrastructure code to support PCI bus devices.
741
742config PCI_DOMAINS
743 bool
744 default PCI
745
746config MPC83xx_PCI2
747 bool " Supprt for 2nd PCI host controller"
748 depends on PCI && MPC834x
749 default y if MPC834x_SYS
750
751config PCI_QSPAN
752 bool "QSpan PCI"
753 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000754 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000755 help
756 Say Y here if you have a system based on a Motorola 8xx-series
757 embedded processor with a QSPAN PCI interface, otherwise say N.
758
759config PCI_8260
760 bool
761 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000762 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000763 default y
764
765config 8260_PCI9
766 bool " Enable workaround for MPC826x erratum PCI 9"
767 depends on PCI_8260 && !ADS8272
768 default y
769
770choice
771 prompt " IDMA channel for PCI 9 workaround"
772 depends on 8260_PCI9
773
774config 8260_PCI9_IDMA1
775 bool "IDMA1"
776
777config 8260_PCI9_IDMA2
778 bool "IDMA2"
779
780config 8260_PCI9_IDMA3
781 bool "IDMA3"
782
783config 8260_PCI9_IDMA4
784 bool "IDMA4"
785
786endchoice
787
788source "drivers/pci/Kconfig"
789
790source "drivers/pcmcia/Kconfig"
791
792source "drivers/pci/hotplug/Kconfig"
793
794endmenu
795
796menu "Advanced setup"
797 depends on PPC32
798
799config ADVANCED_OPTIONS
800 bool "Prompt for advanced kernel configuration options"
801 help
802 This option will enable prompting for a variety of advanced kernel
803 configuration options. These options can cause the kernel to not
804 work if they are set incorrectly, but can be used to optimize certain
805 aspects of kernel memory management.
806
807 Unless you know what you are doing, say N here.
808
809comment "Default settings for advanced configuration options are used"
810 depends on !ADVANCED_OPTIONS
811
812config HIGHMEM_START_BOOL
813 bool "Set high memory pool address"
814 depends on ADVANCED_OPTIONS && HIGHMEM
815 help
816 This option allows you to set the base address of the kernel virtual
817 area used to map high memory pages. This can be useful in
818 optimizing the layout of kernel virtual memory.
819
820 Say N here unless you know what you are doing.
821
822config HIGHMEM_START
823 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
824 default "0xfe000000"
825
826config LOWMEM_SIZE_BOOL
827 bool "Set maximum low memory"
828 depends on ADVANCED_OPTIONS
829 help
830 This option allows you to set the maximum amount of memory which
831 will be used as "low memory", that is, memory which the kernel can
832 access directly, without having to set up a kernel virtual mapping.
833 This can be useful in optimizing the layout of kernel virtual
834 memory.
835
836 Say N here unless you know what you are doing.
837
838config LOWMEM_SIZE
839 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
840 default "0x30000000"
841
842config KERNEL_START_BOOL
843 bool "Set custom kernel base address"
844 depends on ADVANCED_OPTIONS
845 help
846 This option allows you to set the kernel virtual address at which
847 the kernel will map low memory (the kernel image will be linked at
848 this address). This can be useful in optimizing the virtual memory
849 layout of the system.
850
851 Say N here unless you know what you are doing.
852
853config KERNEL_START
854 hex "Virtual address of kernel base" if KERNEL_START_BOOL
855 default "0xc0000000"
856
857config TASK_SIZE_BOOL
858 bool "Set custom user task size"
859 depends on ADVANCED_OPTIONS
860 help
861 This option allows you to set the amount of virtual address space
862 allocated to user tasks. This can be useful in optimizing the
863 virtual memory layout of the system.
864
865 Say N here unless you know what you are doing.
866
867config TASK_SIZE
868 hex "Size of user task space" if TASK_SIZE_BOOL
869 default "0x80000000"
870
871config CONSISTENT_START_BOOL
872 bool "Set custom consistent memory pool address"
873 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
874 help
875 This option allows you to set the base virtual address
876 of the the consistent memory pool. This pool of virtual
877 memory is used to make consistent memory allocations.
878
879config CONSISTENT_START
880 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
881 default "0xff100000" if NOT_COHERENT_CACHE
882
883config CONSISTENT_SIZE_BOOL
884 bool "Set custom consistent memory pool size"
885 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
886 help
887 This option allows you to set the size of the the
888 consistent memory pool. This pool of virtual memory
889 is used to make consistent memory allocations.
890
891config CONSISTENT_SIZE
892 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
893 default "0x00200000" if NOT_COHERENT_CACHE
894
895config BOOT_LOAD_BOOL
896 bool "Set the boot link/load address"
897 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
898 help
899 This option allows you to set the initial load address of the zImage
900 or zImage.initrd file. This can be useful if you are on a board
901 which has a small amount of memory.
902
903 Say N here unless you know what you are doing.
904
905config BOOT_LOAD
906 hex "Link/load address for booting" if BOOT_LOAD_BOOL
907 default "0x00400000" if 40x || 8xx || 8260
908 default "0x01000000" if 44x
909 default "0x00800000"
910
911config PIN_TLB
912 bool "Pinned Kernel TLBs (860 ONLY)"
913 depends on ADVANCED_OPTIONS && 8xx
914endmenu
915
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000916if PPC64
917config KERNEL_START
918 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +1000919 default "0xc000000000000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000920endif
921
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000922source "net/Kconfig"
923
924source "drivers/Kconfig"
925
926source "fs/Kconfig"
927
928# XXX source "arch/ppc/8xx_io/Kconfig"
929
930# XXX source "arch/ppc/8260_io/Kconfig"
931
932source "arch/powerpc/platforms/iseries/Kconfig"
933
934source "lib/Kconfig"
935
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800936menu "Instrumentation Support"
937 depends on EXPERIMENTAL
938
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000939source "arch/powerpc/oprofile/Kconfig"
940
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800941config KPROBES
942 bool "Kprobes (EXPERIMENTAL)"
Paul Mackerras7568cb42005-11-14 17:30:17 +1100943 depends on PPC64
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800944 help
945 Kprobes allows you to trap at almost any kernel address and
946 execute a callback function. register_kprobe() establishes
947 a probepoint and specifies the callback. Kprobes is useful
948 for kernel debugging, non-intrusive instrumentation and testing.
949 If in doubt, say "N".
950endmenu
951
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000952source "arch/powerpc/Kconfig.debug"
953
954source "security/Kconfig"
955
956config KEYS_COMPAT
957 bool
958 depends on COMPAT && KEYS
959 default y
960
961source "crypto/Kconfig"