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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
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 Mackerras14cf11a2005-09-26 16:04:21 +1000311 default y
312
313config PPC_MAPLE
314 depends on PPC_MULTIPLATFORM && PPC64
315 bool " Maple 970FX Evaluation Board"
316 select U3_DART
317 select MPIC_BROKEN_U3
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100318 select GENERIC_TBSYNC
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000319 default n
320 help
321 This option enables support for the Maple 970FX Evaluation Board.
322 For more informations, refer to <http://www.970eval.com>
323
Arnd Bergmannf3f66f52005-10-31 20:08:37 -0500324config PPC_CELL
325 bool " Cell Broadband Processor Architecture"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000326 depends on PPC_MULTIPLATFORM && PPC64
Paul Mackerras033ef332005-10-26 17:05:24 +1000327 select PPC_RTAS
Arnd Bergmannedf03c12005-10-31 20:08:40 -0500328 select MMIO_NVRAM
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000329
330config PPC_OF
331 bool
Paul Mackerras187a0062005-10-06 12:49:05 +1000332 depends on PPC_MULTIPLATFORM # for now
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000333 default y
334
335config XICS
336 depends on PPC_PSERIES
337 bool
338 default y
339
340config U3_DART
341 bool
342 depends on PPC_MULTIPLATFORM && PPC64
343 default n
344
345config MPIC
Paul Mackerrasbbd0abd2005-10-26 21:45:56 +1000346 depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000347 bool
348 default y
349
Paul Mackerras033ef332005-10-26 17:05:24 +1000350config PPC_RTAS
351 bool
352 default n
353
354config RTAS_ERROR_LOGGING
355 bool
356 depends on PPC_RTAS
357 default n
358
Paul Mackerrasf4fcbbe2005-11-03 14:41:19 +1100359config RTAS_PROC
360 bool "Proc interface to RTAS"
Arnd Bergmanne9add2e2005-10-31 20:08:39 -0500361 depends on PPC_RTAS
Paul Mackerrasf4fcbbe2005-11-03 14:41:19 +1100362 default y
363
364config RTAS_FLASH
365 tristate "Firmware flash interface"
366 depends on PPC64 && RTAS_PROC
Arnd Bergmanne9add2e2005-10-31 20:08:39 -0500367
Arnd Bergmannedf03c12005-10-31 20:08:40 -0500368config MMIO_NVRAM
369 bool
370 default n
371
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000372config MPIC_BROKEN_U3
373 bool
374 depends on PPC_MAPLE
375 default y
376
Arnd Bergmannf3f66f52005-10-31 20:08:37 -0500377config CELL_IIC
378 depends on PPC_CELL
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000379 bool
380 default y
381
Michael Ellerman398ab1f2005-12-04 18:39:23 +1100382config CRASH_DUMP
383 bool "kernel crash dumps (EXPERIMENTAL)"
384 depends on PPC_MULTIPLATFORM
385 depends on EXPERIMENTAL
386 help
387 Build a kernel suitable for use as a kdump capture kernel.
388 The kernel will be linked at a different address than normal, and
389 so can only be used for Kdump.
390
391 Don't change this unless you know what you are doing.
392
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000393config IBMVIO
394 depends on PPC_PSERIES || PPC_ISERIES
395 bool
396 default y
397
Heiko J Schickd7a30102005-11-16 08:56:43 +0100398config IBMEBUS
399 depends on PPC_PSERIES
400 bool "Support for GX bus based adapters"
401 default y
402 help
403 Bus device driver for GX bus based adapters.
404
Paul Mackerras830825d2005-10-26 17:16:38 +1000405config PPC_MPC106
406 bool
407 default n
408
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100409config GENERIC_TBSYNC
410 bool
411 default y if CONFIG_PPC32 && CONFIG_SMP
412 default n
413
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000414source "drivers/cpufreq/Kconfig"
415
416config CPU_FREQ_PMAC
417 bool "Support for Apple PowerBooks"
418 depends on CPU_FREQ && ADB_PMU && PPC32
419 select CPU_FREQ_TABLE
420 help
421 This adds support for frequency switching on Apple PowerBooks,
422 this currently includes some models of iBook & Titanium
423 PowerBook.
424
Benjamin Herrenschmidt43501472005-11-07 14:27:33 +1100425config CPU_FREQ_PMAC64
426 bool "Support for some Apple G5s"
427 depends on CPU_FREQ && PMAC_SMU && PPC64
428 select CPU_FREQ_TABLE
429 help
430 This adds support for frequency switching on Apple iMac G5,
431 and some of the more recent desktop G5 machines as well.
432
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000433config PPC601_SYNC_FIX
434 bool "Workarounds for PPC601 bugs"
435 depends on 6xx && (PPC_PREP || PPC_PMAC)
436 help
437 Some versions of the PPC601 (the first PowerPC chip) have bugs which
438 mean that extra synchronization instructions are required near
439 certain instructions, typically those that make major changes to the
440 CPU state. These extra instructions reduce performance slightly.
441 If you say N here, these extra instructions will not be included,
442 resulting in a kernel which will run faster but may not run at all
443 on some systems with the PPC601 chip.
444
445 If in doubt, say Y here.
446
447config TAU
448 bool "Thermal Management Support"
449 depends on 6xx
450 help
451 G3 and G4 processors have an on-chip temperature sensor called the
452 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
453 temperature within 2-4 degrees Celsius. This option shows the current
454 on-die temperature in /proc/cpuinfo if the cpu supports it.
455
456 Unfortunately, on some chip revisions, this sensor is very inaccurate
457 and in some cases, does not work at all, so don't assume the cpu
458 temp is actually what /proc/cpuinfo says it is.
459
460config TAU_INT
461 bool "Interrupt driven TAU driver (DANGEROUS)"
462 depends on TAU
463 ---help---
464 The TAU supports an interrupt driven mode which causes an interrupt
465 whenever the temperature goes out of range. This is the fastest way
466 to get notified the temp has exceeded a range. With this option off,
467 a timer is used to re-check the temperature periodically.
468
469 However, on some cpus it appears that the TAU interrupt hardware
470 is buggy and can cause a situation which would lead unexplained hard
471 lockups.
472
473 Unless you are extending the TAU driver, or enjoy kernel/hardware
474 debugging, leave this option off.
475
476config TAU_AVERAGE
477 bool "Average high and low temp"
478 depends on TAU
479 ---help---
480 The TAU hardware can compare the temperature to an upper and lower
481 bound. The default behavior is to show both the upper and lower
482 bound in /proc/cpuinfo. If the range is large, the temperature is
483 either changing a lot, or the TAU hardware is broken (likely on some
484 G4's). If the range is small (around 4 degrees), the temperature is
485 relatively stable. If you say Y here, a single temperature value,
486 halfway between the upper and lower bounds, will be reported in
487 /proc/cpuinfo.
488
489 If in doubt, say N here.
490endmenu
491
492source arch/powerpc/platforms/embedded6xx/Kconfig
493source arch/powerpc/platforms/4xx/Kconfig
494source arch/powerpc/platforms/85xx/Kconfig
495source arch/powerpc/platforms/8xx/Kconfig
Arnd Bergmann67207b92005-11-15 15:53:48 -0500496source arch/powerpc/platforms/cell/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000497
498menu "Kernel options"
499
500config HIGHMEM
501 bool "High memory support"
502 depends on PPC32
503
504source kernel/Kconfig.hz
505source kernel/Kconfig.preempt
506source "fs/Kconfig.binfmt"
507
508# We optimistically allocate largepages from the VM, so make the limit
509# large enough (16MB). This badly named config option is actually
510# max order + 1
511config FORCE_MAX_ZONEORDER
512 int
513 depends on PPC64
Mike Kravetz02864862005-11-07 13:48:59 -0800514 default "9" if PPC_64K_PAGES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000515 default "13"
516
517config MATH_EMULATION
518 bool "Math emulation"
519 depends on 4xx || 8xx || E200 || E500
520 ---help---
521 Some PowerPC chips designed for embedded applications do not have
522 a floating-point unit and therefore do not implement the
523 floating-point instructions in the PowerPC instruction set. If you
524 say Y here, the kernel will include code to emulate a floating-point
525 unit, which will allow programs that use floating-point
526 instructions to run.
527
528config IOMMU_VMERGE
529 bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
530 depends on EXPERIMENTAL && PPC64
531 default n
532 help
533 Cause IO segments sent to a device for DMA to be merged virtually
534 by the IOMMU when they happen to have been allocated contiguously.
535 This doesn't add pressure to the IOMMU allocator. However, some
536 drivers don't support getting large merged segments coming back
537 from *_map_sg(). Say Y if you know the drivers you are using are
538 properly handling this case.
539
540config HOTPLUG_CPU
541 bool "Support for enabling/disabling CPUs"
542 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
543 ---help---
544 Say Y here to be able to disable and re-enable individual
545 CPUs at runtime on SMP machines.
546
547 Say N if you are unsure.
548
549config KEXEC
550 bool "kexec system call (EXPERIMENTAL)"
551 depends on PPC_MULTIPLATFORM && EXPERIMENTAL
552 help
553 kexec is a system call that implements the ability to shutdown your
554 current kernel, and to start another kernel. It is like a reboot
555 but it is indepedent of the system firmware. And like a reboot
556 you can start any kernel with it, not just Linux.
557
558 The name comes from the similiarity to the exec system call.
559
560 It is an ongoing process to be certain the hardware in a machine
561 is properly shutdown, so do not be surprised if this code does not
562 initially work for you. It may help to enable device hotplugging
563 support. As of this writing the exact hardware interface is
564 strongly in flux, so no good recommendation can be made.
565
566config EMBEDDEDBOOT
567 bool
568 depends on 8xx || 8260
569 default y
570
571config PC_KEYBOARD
572 bool "PC PS/2 style Keyboard"
573 depends on 4xx || CPM2
574
575config PPCBUG_NVRAM
576 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
577 default y if PPC_PREP
578
579config IRQ_ALL_CPUS
580 bool "Distribute interrupts on all CPUs by default"
581 depends on SMP && !MV64360
582 help
583 This option gives the kernel permission to distribute IRQs across
584 multiple CPUs. Saying N here will route all IRQs to the first
585 CPU. Generally saying Y is safe, although some problems have been
586 reported with SMP Power Macintoshes with this option enabled.
587
588source "arch/powerpc/platforms/pseries/Kconfig"
589
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700590config NUMA
591 bool "NUMA support"
592 depends on PPC64
593 default y if SMP && PPC_PSERIES
594
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000595config ARCH_SELECT_MEMORY_MODEL
596 def_bool y
597 depends on PPC64
598
599config ARCH_FLATMEM_ENABLE
Andy Whitcroft9100b202005-11-29 19:20:55 +0000600 def_bool y
601 depends on (PPC64 && !NUMA) || PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000602
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000603config ARCH_SPARSEMEM_ENABLE
604 def_bool y
Andy Whitcroft9100b202005-11-29 19:20:55 +0000605 depends on PPC64
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100606
607config ARCH_SPARSEMEM_DEFAULT
608 def_bool y
609 depends on SMP && PPC_PSERIES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000610
611source "mm/Kconfig"
612
613config HAVE_ARCH_EARLY_PFN_TO_NID
614 def_bool y
615 depends on NEED_MULTIPLE_NODES
616
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800617config ARCH_MEMORY_PROBE
618 def_bool y
619 depends on MEMORY_HOTPLUG
620
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100621config PPC_64K_PAGES
622 bool "64k page size"
Benjamin Herrenschmidt863c84b2005-11-07 00:57:58 -0800623 depends on PPC64
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100624 help
625 This option changes the kernel logical page size to 64k. On machines
626 without processor support for 64k pages, the kernel will simulate
627 them by loading each individual 4k page on demand transparently,
628 while on hardware with such support, it will be used to map
629 normal application pages.
630
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000631config SCHED_SMT
632 bool "SMT (Hyperthreading) scheduler support"
633 depends on PPC64 && SMP
634 default off
635 help
636 SMT scheduler support improves the CPU scheduler's decision making
637 when dealing with POWER5 cpus at a cost of slightly increased
638 overhead in some places. If unsure say N here.
639
640config PROC_DEVICETREE
Paul Mackerras5f296752005-10-17 20:14:59 +1000641 bool "Support for device tree in /proc"
642 depends on PROC_FS
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000643 help
644 This option adds a device-tree directory under /proc which contains
645 an image of the device tree that the kernel copies from Open
Paul Mackerras5f296752005-10-17 20:14:59 +1000646 Firmware or other boot firmware. If unsure, say Y here.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000647
648source "arch/powerpc/platforms/prep/Kconfig"
649
650config CMDLINE_BOOL
651 bool "Default bootloader kernel arguments"
652 depends on !PPC_ISERIES
653
654config CMDLINE
655 string "Initial kernel command string"
656 depends on CMDLINE_BOOL
657 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
658 help
659 On some platforms, there is currently no way for the boot loader to
660 pass arguments to the kernel. For these platforms, you can supply
661 some command-line options at build time by entering them here. In
662 most cases you will need to specify the root device here.
663
664if !44x || BROKEN
665source kernel/power/Kconfig
666endif
667
668config SECCOMP
669 bool "Enable seccomp to safely compute untrusted bytecode"
670 depends on PROC_FS
671 default y
672 help
673 This kernel feature is useful for number crunching applications
674 that may need to compute untrusted bytecode during their
675 execution. By using pipes or other transports made available to
676 the process as file descriptors supporting the read/write
677 syscalls, it's possible to isolate those applications in
678 their own address space using seccomp. Once seccomp is
679 enabled via /proc/<pid>/seccomp, it cannot be disabled
680 and the task is only allowed to execute a few safe syscalls
681 defined by each seccomp mode.
682
683 If unsure, say Y. Only embedded should say N here.
684
685endmenu
686
687config ISA_DMA_API
688 bool
689 default y
690
691menu "Bus options"
692
693config ISA
694 bool "Support for ISA-bus hardware"
695 depends on PPC_PREP || PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000696 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000697 help
698 Find out whether you have ISA slots on your motherboard. ISA is the
699 name of a bus system, i.e. the way the CPU talks to the other stuff
700 inside your box. If you have an Apple machine, say N here; if you
701 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
702 you have an embedded board, consult your board documentation.
703
704config GENERIC_ISA_DMA
705 bool
706 depends on PPC64 || POWER4 || 6xx && !CPM2
707 default y
708
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000709config PPC_I8259
710 bool
711 default y if 85xx
712 default n
713
Paul Mackerras25635c72005-10-26 16:36:55 +1000714config PPC_INDIRECT_PCI
715 bool
716 depends on PCI
717 default y if 40x || 44x || 85xx || 83xx
718 default n
719
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000720config EISA
721 bool
722
723config SBUS
724 bool
725
726# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
727config MCA
728 bool
729
730config PCI
731 bool "PCI support" if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES)
732 default y if !40x && !CPM2 && !8xx && !APUS && !83xx && !85xx
733 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
734 default PCI_QSPAN if !4xx && !CPM2 && 8xx
735 help
736 Find out whether your system includes a PCI bus. PCI is the name of
737 a bus system, i.e. the way the CPU talks to the other stuff inside
738 your box. If you say Y here, the kernel will include drivers and
739 infrastructure code to support PCI bus devices.
740
741config PCI_DOMAINS
742 bool
743 default PCI
744
745config MPC83xx_PCI2
746 bool " Supprt for 2nd PCI host controller"
747 depends on PCI && MPC834x
748 default y if MPC834x_SYS
749
750config PCI_QSPAN
751 bool "QSpan PCI"
752 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000753 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000754 help
755 Say Y here if you have a system based on a Motorola 8xx-series
756 embedded processor with a QSPAN PCI interface, otherwise say N.
757
758config PCI_8260
759 bool
760 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000761 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000762 default y
763
764config 8260_PCI9
765 bool " Enable workaround for MPC826x erratum PCI 9"
766 depends on PCI_8260 && !ADS8272
767 default y
768
769choice
770 prompt " IDMA channel for PCI 9 workaround"
771 depends on 8260_PCI9
772
773config 8260_PCI9_IDMA1
774 bool "IDMA1"
775
776config 8260_PCI9_IDMA2
777 bool "IDMA2"
778
779config 8260_PCI9_IDMA3
780 bool "IDMA3"
781
782config 8260_PCI9_IDMA4
783 bool "IDMA4"
784
785endchoice
786
787source "drivers/pci/Kconfig"
788
789source "drivers/pcmcia/Kconfig"
790
791source "drivers/pci/hotplug/Kconfig"
792
793endmenu
794
795menu "Advanced setup"
796 depends on PPC32
797
798config ADVANCED_OPTIONS
799 bool "Prompt for advanced kernel configuration options"
800 help
801 This option will enable prompting for a variety of advanced kernel
802 configuration options. These options can cause the kernel to not
803 work if they are set incorrectly, but can be used to optimize certain
804 aspects of kernel memory management.
805
806 Unless you know what you are doing, say N here.
807
808comment "Default settings for advanced configuration options are used"
809 depends on !ADVANCED_OPTIONS
810
811config HIGHMEM_START_BOOL
812 bool "Set high memory pool address"
813 depends on ADVANCED_OPTIONS && HIGHMEM
814 help
815 This option allows you to set the base address of the kernel virtual
816 area used to map high memory pages. This can be useful in
817 optimizing the layout of kernel virtual memory.
818
819 Say N here unless you know what you are doing.
820
821config HIGHMEM_START
822 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
823 default "0xfe000000"
824
825config LOWMEM_SIZE_BOOL
826 bool "Set maximum low memory"
827 depends on ADVANCED_OPTIONS
828 help
829 This option allows you to set the maximum amount of memory which
830 will be used as "low memory", that is, memory which the kernel can
831 access directly, without having to set up a kernel virtual mapping.
832 This can be useful in optimizing the layout of kernel virtual
833 memory.
834
835 Say N here unless you know what you are doing.
836
837config LOWMEM_SIZE
838 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
839 default "0x30000000"
840
841config KERNEL_START_BOOL
842 bool "Set custom kernel base address"
843 depends on ADVANCED_OPTIONS
844 help
845 This option allows you to set the kernel virtual address at which
846 the kernel will map low memory (the kernel image will be linked at
847 this address). This can be useful in optimizing the virtual memory
848 layout of the system.
849
850 Say N here unless you know what you are doing.
851
852config KERNEL_START
853 hex "Virtual address of kernel base" if KERNEL_START_BOOL
854 default "0xc0000000"
855
856config TASK_SIZE_BOOL
857 bool "Set custom user task size"
858 depends on ADVANCED_OPTIONS
859 help
860 This option allows you to set the amount of virtual address space
861 allocated to user tasks. This can be useful in optimizing the
862 virtual memory layout of the system.
863
864 Say N here unless you know what you are doing.
865
866config TASK_SIZE
867 hex "Size of user task space" if TASK_SIZE_BOOL
868 default "0x80000000"
869
870config CONSISTENT_START_BOOL
871 bool "Set custom consistent memory pool address"
872 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
873 help
874 This option allows you to set the base virtual address
875 of the the consistent memory pool. This pool of virtual
876 memory is used to make consistent memory allocations.
877
878config CONSISTENT_START
879 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
880 default "0xff100000" if NOT_COHERENT_CACHE
881
882config CONSISTENT_SIZE_BOOL
883 bool "Set custom consistent memory pool size"
884 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
885 help
886 This option allows you to set the size of the the
887 consistent memory pool. This pool of virtual memory
888 is used to make consistent memory allocations.
889
890config CONSISTENT_SIZE
891 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
892 default "0x00200000" if NOT_COHERENT_CACHE
893
894config BOOT_LOAD_BOOL
895 bool "Set the boot link/load address"
896 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
897 help
898 This option allows you to set the initial load address of the zImage
899 or zImage.initrd file. This can be useful if you are on a board
900 which has a small amount of memory.
901
902 Say N here unless you know what you are doing.
903
904config BOOT_LOAD
905 hex "Link/load address for booting" if BOOT_LOAD_BOOL
906 default "0x00400000" if 40x || 8xx || 8260
907 default "0x01000000" if 44x
908 default "0x00800000"
909
910config PIN_TLB
911 bool "Pinned Kernel TLBs (860 ONLY)"
912 depends on ADVANCED_OPTIONS && 8xx
913endmenu
914
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000915if PPC64
916config KERNEL_START
917 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +1000918 default "0xc000000000000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000919endif
920
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000921source "net/Kconfig"
922
923source "drivers/Kconfig"
924
925source "fs/Kconfig"
926
927# XXX source "arch/ppc/8xx_io/Kconfig"
928
929# XXX source "arch/ppc/8260_io/Kconfig"
930
931source "arch/powerpc/platforms/iseries/Kconfig"
932
933source "lib/Kconfig"
934
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800935menu "Instrumentation Support"
936 depends on EXPERIMENTAL
937
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000938source "arch/powerpc/oprofile/Kconfig"
939
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800940config KPROBES
941 bool "Kprobes (EXPERIMENTAL)"
Paul Mackerras7568cb42005-11-14 17:30:17 +1100942 depends on PPC64
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800943 help
944 Kprobes allows you to trap at almost any kernel address and
945 execute a callback function. register_kprobe() establishes
946 a probepoint and specifies the callback. Kprobes is useful
947 for kernel debugging, non-intrusive instrumentation and testing.
948 If in doubt, say "N".
949endmenu
950
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000951source "arch/powerpc/Kconfig.debug"
952
953source "security/Kconfig"
954
955config KEYS_COMPAT
956 bool
957 depends on COMPAT && KEYS
958 default y
959
960source "crypto/Kconfig"