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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
53 default y if PPC64
54
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
382config IBMVIO
383 depends on PPC_PSERIES || PPC_ISERIES
384 bool
385 default y
386
Heiko J Schickd7a30102005-11-16 08:56:43 +0100387config IBMEBUS
388 depends on PPC_PSERIES
389 bool "Support for GX bus based adapters"
390 default y
391 help
392 Bus device driver for GX bus based adapters.
393
Paul Mackerras830825d2005-10-26 17:16:38 +1000394config PPC_MPC106
395 bool
396 default n
397
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100398config GENERIC_TBSYNC
399 bool
400 default y if CONFIG_PPC32 && CONFIG_SMP
401 default n
402
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000403source "drivers/cpufreq/Kconfig"
404
405config CPU_FREQ_PMAC
406 bool "Support for Apple PowerBooks"
407 depends on CPU_FREQ && ADB_PMU && PPC32
408 select CPU_FREQ_TABLE
409 help
410 This adds support for frequency switching on Apple PowerBooks,
411 this currently includes some models of iBook & Titanium
412 PowerBook.
413
Benjamin Herrenschmidt43501472005-11-07 14:27:33 +1100414config CPU_FREQ_PMAC64
415 bool "Support for some Apple G5s"
416 depends on CPU_FREQ && PMAC_SMU && PPC64
417 select CPU_FREQ_TABLE
418 help
419 This adds support for frequency switching on Apple iMac G5,
420 and some of the more recent desktop G5 machines as well.
421
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000422config PPC601_SYNC_FIX
423 bool "Workarounds for PPC601 bugs"
424 depends on 6xx && (PPC_PREP || PPC_PMAC)
425 help
426 Some versions of the PPC601 (the first PowerPC chip) have bugs which
427 mean that extra synchronization instructions are required near
428 certain instructions, typically those that make major changes to the
429 CPU state. These extra instructions reduce performance slightly.
430 If you say N here, these extra instructions will not be included,
431 resulting in a kernel which will run faster but may not run at all
432 on some systems with the PPC601 chip.
433
434 If in doubt, say Y here.
435
436config TAU
437 bool "Thermal Management Support"
438 depends on 6xx
439 help
440 G3 and G4 processors have an on-chip temperature sensor called the
441 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
442 temperature within 2-4 degrees Celsius. This option shows the current
443 on-die temperature in /proc/cpuinfo if the cpu supports it.
444
445 Unfortunately, on some chip revisions, this sensor is very inaccurate
446 and in some cases, does not work at all, so don't assume the cpu
447 temp is actually what /proc/cpuinfo says it is.
448
449config TAU_INT
450 bool "Interrupt driven TAU driver (DANGEROUS)"
451 depends on TAU
452 ---help---
453 The TAU supports an interrupt driven mode which causes an interrupt
454 whenever the temperature goes out of range. This is the fastest way
455 to get notified the temp has exceeded a range. With this option off,
456 a timer is used to re-check the temperature periodically.
457
458 However, on some cpus it appears that the TAU interrupt hardware
459 is buggy and can cause a situation which would lead unexplained hard
460 lockups.
461
462 Unless you are extending the TAU driver, or enjoy kernel/hardware
463 debugging, leave this option off.
464
465config TAU_AVERAGE
466 bool "Average high and low temp"
467 depends on TAU
468 ---help---
469 The TAU hardware can compare the temperature to an upper and lower
470 bound. The default behavior is to show both the upper and lower
471 bound in /proc/cpuinfo. If the range is large, the temperature is
472 either changing a lot, or the TAU hardware is broken (likely on some
473 G4's). If the range is small (around 4 degrees), the temperature is
474 relatively stable. If you say Y here, a single temperature value,
475 halfway between the upper and lower bounds, will be reported in
476 /proc/cpuinfo.
477
478 If in doubt, say N here.
479endmenu
480
481source arch/powerpc/platforms/embedded6xx/Kconfig
482source arch/powerpc/platforms/4xx/Kconfig
483source arch/powerpc/platforms/85xx/Kconfig
484source arch/powerpc/platforms/8xx/Kconfig
485
486menu "Kernel options"
487
488config HIGHMEM
489 bool "High memory support"
490 depends on PPC32
491
492source kernel/Kconfig.hz
493source kernel/Kconfig.preempt
494source "fs/Kconfig.binfmt"
495
496# We optimistically allocate largepages from the VM, so make the limit
497# large enough (16MB). This badly named config option is actually
498# max order + 1
499config FORCE_MAX_ZONEORDER
500 int
501 depends on PPC64
Mike Kravetz02864862005-11-07 13:48:59 -0800502 default "9" if PPC_64K_PAGES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000503 default "13"
504
505config MATH_EMULATION
506 bool "Math emulation"
507 depends on 4xx || 8xx || E200 || E500
508 ---help---
509 Some PowerPC chips designed for embedded applications do not have
510 a floating-point unit and therefore do not implement the
511 floating-point instructions in the PowerPC instruction set. If you
512 say Y here, the kernel will include code to emulate a floating-point
513 unit, which will allow programs that use floating-point
514 instructions to run.
515
516config IOMMU_VMERGE
517 bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
518 depends on EXPERIMENTAL && PPC64
519 default n
520 help
521 Cause IO segments sent to a device for DMA to be merged virtually
522 by the IOMMU when they happen to have been allocated contiguously.
523 This doesn't add pressure to the IOMMU allocator. However, some
524 drivers don't support getting large merged segments coming back
525 from *_map_sg(). Say Y if you know the drivers you are using are
526 properly handling this case.
527
528config HOTPLUG_CPU
529 bool "Support for enabling/disabling CPUs"
530 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
531 ---help---
532 Say Y here to be able to disable and re-enable individual
533 CPUs at runtime on SMP machines.
534
535 Say N if you are unsure.
536
537config KEXEC
538 bool "kexec system call (EXPERIMENTAL)"
539 depends on PPC_MULTIPLATFORM && EXPERIMENTAL
540 help
541 kexec is a system call that implements the ability to shutdown your
542 current kernel, and to start another kernel. It is like a reboot
543 but it is indepedent of the system firmware. And like a reboot
544 you can start any kernel with it, not just Linux.
545
546 The name comes from the similiarity to the exec system call.
547
548 It is an ongoing process to be certain the hardware in a machine
549 is properly shutdown, so do not be surprised if this code does not
550 initially work for you. It may help to enable device hotplugging
551 support. As of this writing the exact hardware interface is
552 strongly in flux, so no good recommendation can be made.
553
554config EMBEDDEDBOOT
555 bool
556 depends on 8xx || 8260
557 default y
558
559config PC_KEYBOARD
560 bool "PC PS/2 style Keyboard"
561 depends on 4xx || CPM2
562
563config PPCBUG_NVRAM
564 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
565 default y if PPC_PREP
566
567config IRQ_ALL_CPUS
568 bool "Distribute interrupts on all CPUs by default"
569 depends on SMP && !MV64360
570 help
571 This option gives the kernel permission to distribute IRQs across
572 multiple CPUs. Saying N here will route all IRQs to the first
573 CPU. Generally saying Y is safe, although some problems have been
574 reported with SMP Power Macintoshes with this option enabled.
575
576source "arch/powerpc/platforms/pseries/Kconfig"
577
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700578config NUMA
579 bool "NUMA support"
580 depends on PPC64
581 default y if SMP && PPC_PSERIES
582
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000583config ARCH_SELECT_MEMORY_MODEL
584 def_bool y
585 depends on PPC64
586
587config ARCH_FLATMEM_ENABLE
588 def_bool y
589 depends on PPC64 && !NUMA
590
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000591config ARCH_SPARSEMEM_ENABLE
592 def_bool y
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100593
594config ARCH_SPARSEMEM_DEFAULT
595 def_bool y
596 depends on SMP && PPC_PSERIES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000597
598source "mm/Kconfig"
599
600config HAVE_ARCH_EARLY_PFN_TO_NID
601 def_bool y
602 depends on NEED_MULTIPLE_NODES
603
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800604config ARCH_MEMORY_PROBE
605 def_bool y
606 depends on MEMORY_HOTPLUG
607
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100608config PPC_64K_PAGES
609 bool "64k page size"
Benjamin Herrenschmidt863c84b2005-11-07 00:57:58 -0800610 depends on PPC64
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100611 help
612 This option changes the kernel logical page size to 64k. On machines
613 without processor support for 64k pages, the kernel will simulate
614 them by loading each individual 4k page on demand transparently,
615 while on hardware with such support, it will be used to map
616 normal application pages.
617
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000618config SCHED_SMT
619 bool "SMT (Hyperthreading) scheduler support"
620 depends on PPC64 && SMP
621 default off
622 help
623 SMT scheduler support improves the CPU scheduler's decision making
624 when dealing with POWER5 cpus at a cost of slightly increased
625 overhead in some places. If unsure say N here.
626
627config PROC_DEVICETREE
Paul Mackerras5f296752005-10-17 20:14:59 +1000628 bool "Support for device tree in /proc"
629 depends on PROC_FS
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000630 help
631 This option adds a device-tree directory under /proc which contains
632 an image of the device tree that the kernel copies from Open
Paul Mackerras5f296752005-10-17 20:14:59 +1000633 Firmware or other boot firmware. If unsure, say Y here.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000634
635source "arch/powerpc/platforms/prep/Kconfig"
636
637config CMDLINE_BOOL
638 bool "Default bootloader kernel arguments"
639 depends on !PPC_ISERIES
640
641config CMDLINE
642 string "Initial kernel command string"
643 depends on CMDLINE_BOOL
644 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
645 help
646 On some platforms, there is currently no way for the boot loader to
647 pass arguments to the kernel. For these platforms, you can supply
648 some command-line options at build time by entering them here. In
649 most cases you will need to specify the root device here.
650
651if !44x || BROKEN
652source kernel/power/Kconfig
653endif
654
655config SECCOMP
656 bool "Enable seccomp to safely compute untrusted bytecode"
657 depends on PROC_FS
658 default y
659 help
660 This kernel feature is useful for number crunching applications
661 that may need to compute untrusted bytecode during their
662 execution. By using pipes or other transports made available to
663 the process as file descriptors supporting the read/write
664 syscalls, it's possible to isolate those applications in
665 their own address space using seccomp. Once seccomp is
666 enabled via /proc/<pid>/seccomp, it cannot be disabled
667 and the task is only allowed to execute a few safe syscalls
668 defined by each seccomp mode.
669
670 If unsure, say Y. Only embedded should say N here.
671
672endmenu
673
674config ISA_DMA_API
675 bool
676 default y
677
678menu "Bus options"
679
680config ISA
681 bool "Support for ISA-bus hardware"
682 depends on PPC_PREP || PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000683 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000684 help
685 Find out whether you have ISA slots on your motherboard. ISA is the
686 name of a bus system, i.e. the way the CPU talks to the other stuff
687 inside your box. If you have an Apple machine, say N here; if you
688 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
689 you have an embedded board, consult your board documentation.
690
691config GENERIC_ISA_DMA
692 bool
693 depends on PPC64 || POWER4 || 6xx && !CPM2
694 default y
695
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000696config PPC_I8259
697 bool
698 default y if 85xx
699 default n
700
Paul Mackerras25635c72005-10-26 16:36:55 +1000701config PPC_INDIRECT_PCI
702 bool
703 depends on PCI
704 default y if 40x || 44x || 85xx || 83xx
705 default n
706
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000707config EISA
708 bool
709
710config SBUS
711 bool
712
713# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
714config MCA
715 bool
716
717config PCI
718 bool "PCI support" if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES)
719 default y if !40x && !CPM2 && !8xx && !APUS && !83xx && !85xx
720 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
721 default PCI_QSPAN if !4xx && !CPM2 && 8xx
722 help
723 Find out whether your system includes a PCI bus. PCI is the name of
724 a bus system, i.e. the way the CPU talks to the other stuff inside
725 your box. If you say Y here, the kernel will include drivers and
726 infrastructure code to support PCI bus devices.
727
728config PCI_DOMAINS
729 bool
730 default PCI
731
732config MPC83xx_PCI2
733 bool " Supprt for 2nd PCI host controller"
734 depends on PCI && MPC834x
735 default y if MPC834x_SYS
736
737config PCI_QSPAN
738 bool "QSpan PCI"
739 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000740 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000741 help
742 Say Y here if you have a system based on a Motorola 8xx-series
743 embedded processor with a QSPAN PCI interface, otherwise say N.
744
745config PCI_8260
746 bool
747 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000748 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000749 default y
750
751config 8260_PCI9
752 bool " Enable workaround for MPC826x erratum PCI 9"
753 depends on PCI_8260 && !ADS8272
754 default y
755
756choice
757 prompt " IDMA channel for PCI 9 workaround"
758 depends on 8260_PCI9
759
760config 8260_PCI9_IDMA1
761 bool "IDMA1"
762
763config 8260_PCI9_IDMA2
764 bool "IDMA2"
765
766config 8260_PCI9_IDMA3
767 bool "IDMA3"
768
769config 8260_PCI9_IDMA4
770 bool "IDMA4"
771
772endchoice
773
774source "drivers/pci/Kconfig"
775
776source "drivers/pcmcia/Kconfig"
777
778source "drivers/pci/hotplug/Kconfig"
779
780endmenu
781
782menu "Advanced setup"
783 depends on PPC32
784
785config ADVANCED_OPTIONS
786 bool "Prompt for advanced kernel configuration options"
787 help
788 This option will enable prompting for a variety of advanced kernel
789 configuration options. These options can cause the kernel to not
790 work if they are set incorrectly, but can be used to optimize certain
791 aspects of kernel memory management.
792
793 Unless you know what you are doing, say N here.
794
795comment "Default settings for advanced configuration options are used"
796 depends on !ADVANCED_OPTIONS
797
798config HIGHMEM_START_BOOL
799 bool "Set high memory pool address"
800 depends on ADVANCED_OPTIONS && HIGHMEM
801 help
802 This option allows you to set the base address of the kernel virtual
803 area used to map high memory pages. This can be useful in
804 optimizing the layout of kernel virtual memory.
805
806 Say N here unless you know what you are doing.
807
808config HIGHMEM_START
809 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
810 default "0xfe000000"
811
812config LOWMEM_SIZE_BOOL
813 bool "Set maximum low memory"
814 depends on ADVANCED_OPTIONS
815 help
816 This option allows you to set the maximum amount of memory which
817 will be used as "low memory", that is, memory which the kernel can
818 access directly, without having to set up a kernel virtual mapping.
819 This can be useful in optimizing the layout of kernel virtual
820 memory.
821
822 Say N here unless you know what you are doing.
823
824config LOWMEM_SIZE
825 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
826 default "0x30000000"
827
828config KERNEL_START_BOOL
829 bool "Set custom kernel base address"
830 depends on ADVANCED_OPTIONS
831 help
832 This option allows you to set the kernel virtual address at which
833 the kernel will map low memory (the kernel image will be linked at
834 this address). This can be useful in optimizing the virtual memory
835 layout of the system.
836
837 Say N here unless you know what you are doing.
838
839config KERNEL_START
840 hex "Virtual address of kernel base" if KERNEL_START_BOOL
841 default "0xc0000000"
842
843config TASK_SIZE_BOOL
844 bool "Set custom user task size"
845 depends on ADVANCED_OPTIONS
846 help
847 This option allows you to set the amount of virtual address space
848 allocated to user tasks. This can be useful in optimizing the
849 virtual memory layout of the system.
850
851 Say N here unless you know what you are doing.
852
853config TASK_SIZE
854 hex "Size of user task space" if TASK_SIZE_BOOL
855 default "0x80000000"
856
857config CONSISTENT_START_BOOL
858 bool "Set custom consistent memory pool address"
859 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
860 help
861 This option allows you to set the base virtual address
862 of the the consistent memory pool. This pool of virtual
863 memory is used to make consistent memory allocations.
864
865config CONSISTENT_START
866 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
867 default "0xff100000" if NOT_COHERENT_CACHE
868
869config CONSISTENT_SIZE_BOOL
870 bool "Set custom consistent memory pool size"
871 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
872 help
873 This option allows you to set the size of the the
874 consistent memory pool. This pool of virtual memory
875 is used to make consistent memory allocations.
876
877config CONSISTENT_SIZE
878 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
879 default "0x00200000" if NOT_COHERENT_CACHE
880
881config BOOT_LOAD_BOOL
882 bool "Set the boot link/load address"
883 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
884 help
885 This option allows you to set the initial load address of the zImage
886 or zImage.initrd file. This can be useful if you are on a board
887 which has a small amount of memory.
888
889 Say N here unless you know what you are doing.
890
891config BOOT_LOAD
892 hex "Link/load address for booting" if BOOT_LOAD_BOOL
893 default "0x00400000" if 40x || 8xx || 8260
894 default "0x01000000" if 44x
895 default "0x00800000"
896
897config PIN_TLB
898 bool "Pinned Kernel TLBs (860 ONLY)"
899 depends on ADVANCED_OPTIONS && 8xx
900endmenu
901
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000902if PPC64
903config KERNEL_START
904 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +1000905 default "0xc000000000000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000906endif
907
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000908source "net/Kconfig"
909
910source "drivers/Kconfig"
911
912source "fs/Kconfig"
913
914# XXX source "arch/ppc/8xx_io/Kconfig"
915
916# XXX source "arch/ppc/8260_io/Kconfig"
917
918source "arch/powerpc/platforms/iseries/Kconfig"
919
920source "lib/Kconfig"
921
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800922menu "Instrumentation Support"
923 depends on EXPERIMENTAL
924
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000925source "arch/powerpc/oprofile/Kconfig"
926
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800927config KPROBES
928 bool "Kprobes (EXPERIMENTAL)"
Paul Mackerras7568cb42005-11-14 17:30:17 +1100929 depends on PPC64
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800930 help
931 Kprobes allows you to trap at almost any kernel address and
932 execute a callback function. register_kprobe() establishes
933 a probepoint and specifies the callback. Kprobes is useful
934 for kernel debugging, non-intrusive instrumentation and testing.
935 If in doubt, say "N".
936endmenu
937
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000938source "arch/powerpc/Kconfig.debug"
939
940source "security/Kconfig"
941
942config KEYS_COMPAT
943 bool
944 depends on COMPAT && KEYS
945 default y
946
947source "crypto/Kconfig"