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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
230 int "Maximum number of CPUs (2-32)"
231 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
Paul Mackerras830825d2005-10-26 17:16:38 +1000387config PPC_MPC106
388 bool
389 default n
390
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100391config GENERIC_TBSYNC
392 bool
393 default y if CONFIG_PPC32 && CONFIG_SMP
394 default n
395
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000396source "drivers/cpufreq/Kconfig"
397
398config CPU_FREQ_PMAC
399 bool "Support for Apple PowerBooks"
400 depends on CPU_FREQ && ADB_PMU && PPC32
401 select CPU_FREQ_TABLE
402 help
403 This adds support for frequency switching on Apple PowerBooks,
404 this currently includes some models of iBook & Titanium
405 PowerBook.
406
Benjamin Herrenschmidt43501472005-11-07 14:27:33 +1100407config CPU_FREQ_PMAC64
408 bool "Support for some Apple G5s"
409 depends on CPU_FREQ && PMAC_SMU && PPC64
410 select CPU_FREQ_TABLE
411 help
412 This adds support for frequency switching on Apple iMac G5,
413 and some of the more recent desktop G5 machines as well.
414
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000415config PPC601_SYNC_FIX
416 bool "Workarounds for PPC601 bugs"
417 depends on 6xx && (PPC_PREP || PPC_PMAC)
418 help
419 Some versions of the PPC601 (the first PowerPC chip) have bugs which
420 mean that extra synchronization instructions are required near
421 certain instructions, typically those that make major changes to the
422 CPU state. These extra instructions reduce performance slightly.
423 If you say N here, these extra instructions will not be included,
424 resulting in a kernel which will run faster but may not run at all
425 on some systems with the PPC601 chip.
426
427 If in doubt, say Y here.
428
429config TAU
430 bool "Thermal Management Support"
431 depends on 6xx
432 help
433 G3 and G4 processors have an on-chip temperature sensor called the
434 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
435 temperature within 2-4 degrees Celsius. This option shows the current
436 on-die temperature in /proc/cpuinfo if the cpu supports it.
437
438 Unfortunately, on some chip revisions, this sensor is very inaccurate
439 and in some cases, does not work at all, so don't assume the cpu
440 temp is actually what /proc/cpuinfo says it is.
441
442config TAU_INT
443 bool "Interrupt driven TAU driver (DANGEROUS)"
444 depends on TAU
445 ---help---
446 The TAU supports an interrupt driven mode which causes an interrupt
447 whenever the temperature goes out of range. This is the fastest way
448 to get notified the temp has exceeded a range. With this option off,
449 a timer is used to re-check the temperature periodically.
450
451 However, on some cpus it appears that the TAU interrupt hardware
452 is buggy and can cause a situation which would lead unexplained hard
453 lockups.
454
455 Unless you are extending the TAU driver, or enjoy kernel/hardware
456 debugging, leave this option off.
457
458config TAU_AVERAGE
459 bool "Average high and low temp"
460 depends on TAU
461 ---help---
462 The TAU hardware can compare the temperature to an upper and lower
463 bound. The default behavior is to show both the upper and lower
464 bound in /proc/cpuinfo. If the range is large, the temperature is
465 either changing a lot, or the TAU hardware is broken (likely on some
466 G4's). If the range is small (around 4 degrees), the temperature is
467 relatively stable. If you say Y here, a single temperature value,
468 halfway between the upper and lower bounds, will be reported in
469 /proc/cpuinfo.
470
471 If in doubt, say N here.
472endmenu
473
474source arch/powerpc/platforms/embedded6xx/Kconfig
475source arch/powerpc/platforms/4xx/Kconfig
476source arch/powerpc/platforms/85xx/Kconfig
477source arch/powerpc/platforms/8xx/Kconfig
478
479menu "Kernel options"
480
481config HIGHMEM
482 bool "High memory support"
483 depends on PPC32
484
485source kernel/Kconfig.hz
486source kernel/Kconfig.preempt
487source "fs/Kconfig.binfmt"
488
489# We optimistically allocate largepages from the VM, so make the limit
490# large enough (16MB). This badly named config option is actually
491# max order + 1
492config FORCE_MAX_ZONEORDER
493 int
494 depends on PPC64
Mike Kravetz02864862005-11-07 13:48:59 -0800495 default "9" if PPC_64K_PAGES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000496 default "13"
497
498config MATH_EMULATION
499 bool "Math emulation"
500 depends on 4xx || 8xx || E200 || E500
501 ---help---
502 Some PowerPC chips designed for embedded applications do not have
503 a floating-point unit and therefore do not implement the
504 floating-point instructions in the PowerPC instruction set. If you
505 say Y here, the kernel will include code to emulate a floating-point
506 unit, which will allow programs that use floating-point
507 instructions to run.
508
509config IOMMU_VMERGE
510 bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
511 depends on EXPERIMENTAL && PPC64
512 default n
513 help
514 Cause IO segments sent to a device for DMA to be merged virtually
515 by the IOMMU when they happen to have been allocated contiguously.
516 This doesn't add pressure to the IOMMU allocator. However, some
517 drivers don't support getting large merged segments coming back
518 from *_map_sg(). Say Y if you know the drivers you are using are
519 properly handling this case.
520
521config HOTPLUG_CPU
522 bool "Support for enabling/disabling CPUs"
523 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
524 ---help---
525 Say Y here to be able to disable and re-enable individual
526 CPUs at runtime on SMP machines.
527
528 Say N if you are unsure.
529
530config KEXEC
531 bool "kexec system call (EXPERIMENTAL)"
532 depends on PPC_MULTIPLATFORM && EXPERIMENTAL
533 help
534 kexec is a system call that implements the ability to shutdown your
535 current kernel, and to start another kernel. It is like a reboot
536 but it is indepedent of the system firmware. And like a reboot
537 you can start any kernel with it, not just Linux.
538
539 The name comes from the similiarity to the exec system call.
540
541 It is an ongoing process to be certain the hardware in a machine
542 is properly shutdown, so do not be surprised if this code does not
543 initially work for you. It may help to enable device hotplugging
544 support. As of this writing the exact hardware interface is
545 strongly in flux, so no good recommendation can be made.
546
547config EMBEDDEDBOOT
548 bool
549 depends on 8xx || 8260
550 default y
551
552config PC_KEYBOARD
553 bool "PC PS/2 style Keyboard"
554 depends on 4xx || CPM2
555
556config PPCBUG_NVRAM
557 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
558 default y if PPC_PREP
559
560config IRQ_ALL_CPUS
561 bool "Distribute interrupts on all CPUs by default"
562 depends on SMP && !MV64360
563 help
564 This option gives the kernel permission to distribute IRQs across
565 multiple CPUs. Saying N here will route all IRQs to the first
566 CPU. Generally saying Y is safe, although some problems have been
567 reported with SMP Power Macintoshes with this option enabled.
568
569source "arch/powerpc/platforms/pseries/Kconfig"
570
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700571config NUMA
572 bool "NUMA support"
573 depends on PPC64
574 default y if SMP && PPC_PSERIES
575
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000576config ARCH_SELECT_MEMORY_MODEL
577 def_bool y
578 depends on PPC64
579
580config ARCH_FLATMEM_ENABLE
581 def_bool y
582 depends on PPC64 && !NUMA
583
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000584config ARCH_SPARSEMEM_ENABLE
585 def_bool y
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100586
587config ARCH_SPARSEMEM_DEFAULT
588 def_bool y
589 depends on SMP && PPC_PSERIES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000590
591source "mm/Kconfig"
592
593config HAVE_ARCH_EARLY_PFN_TO_NID
594 def_bool y
595 depends on NEED_MULTIPLE_NODES
596
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800597config ARCH_MEMORY_PROBE
598 def_bool y
599 depends on MEMORY_HOTPLUG
600
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000601# Some NUMA nodes have memory ranges that span
602# other nodes. Even though a pfn is valid and
603# between a node's start and end pfns, it may not
604# reside on that node.
605#
606# This is a relatively temporary hack that should
607# be able to go away when sparsemem is fully in
608# place
609
610config NODES_SPAN_OTHER_NODES
611 def_bool y
612 depends on NEED_MULTIPLE_NODES
613
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100614config PPC_64K_PAGES
615 bool "64k page size"
Benjamin Herrenschmidt863c84b2005-11-07 00:57:58 -0800616 depends on PPC64
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100617 help
618 This option changes the kernel logical page size to 64k. On machines
619 without processor support for 64k pages, the kernel will simulate
620 them by loading each individual 4k page on demand transparently,
621 while on hardware with such support, it will be used to map
622 normal application pages.
623
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000624config SCHED_SMT
625 bool "SMT (Hyperthreading) scheduler support"
626 depends on PPC64 && SMP
627 default off
628 help
629 SMT scheduler support improves the CPU scheduler's decision making
630 when dealing with POWER5 cpus at a cost of slightly increased
631 overhead in some places. If unsure say N here.
632
633config PROC_DEVICETREE
Paul Mackerras5f296752005-10-17 20:14:59 +1000634 bool "Support for device tree in /proc"
635 depends on PROC_FS
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000636 help
637 This option adds a device-tree directory under /proc which contains
638 an image of the device tree that the kernel copies from Open
Paul Mackerras5f296752005-10-17 20:14:59 +1000639 Firmware or other boot firmware. If unsure, say Y here.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000640
641source "arch/powerpc/platforms/prep/Kconfig"
642
643config CMDLINE_BOOL
644 bool "Default bootloader kernel arguments"
645 depends on !PPC_ISERIES
646
647config CMDLINE
648 string "Initial kernel command string"
649 depends on CMDLINE_BOOL
650 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
651 help
652 On some platforms, there is currently no way for the boot loader to
653 pass arguments to the kernel. For these platforms, you can supply
654 some command-line options at build time by entering them here. In
655 most cases you will need to specify the root device here.
656
657if !44x || BROKEN
658source kernel/power/Kconfig
659endif
660
661config SECCOMP
662 bool "Enable seccomp to safely compute untrusted bytecode"
663 depends on PROC_FS
664 default y
665 help
666 This kernel feature is useful for number crunching applications
667 that may need to compute untrusted bytecode during their
668 execution. By using pipes or other transports made available to
669 the process as file descriptors supporting the read/write
670 syscalls, it's possible to isolate those applications in
671 their own address space using seccomp. Once seccomp is
672 enabled via /proc/<pid>/seccomp, it cannot be disabled
673 and the task is only allowed to execute a few safe syscalls
674 defined by each seccomp mode.
675
676 If unsure, say Y. Only embedded should say N here.
677
678endmenu
679
680config ISA_DMA_API
681 bool
682 default y
683
684menu "Bus options"
685
686config ISA
687 bool "Support for ISA-bus hardware"
688 depends on PPC_PREP || PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000689 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000690 help
691 Find out whether you have ISA slots on your motherboard. ISA is the
692 name of a bus system, i.e. the way the CPU talks to the other stuff
693 inside your box. If you have an Apple machine, say N here; if you
694 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
695 you have an embedded board, consult your board documentation.
696
697config GENERIC_ISA_DMA
698 bool
699 depends on PPC64 || POWER4 || 6xx && !CPM2
700 default y
701
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000702config PPC_I8259
703 bool
704 default y if 85xx
705 default n
706
Paul Mackerras25635c72005-10-26 16:36:55 +1000707config PPC_INDIRECT_PCI
708 bool
709 depends on PCI
710 default y if 40x || 44x || 85xx || 83xx
711 default n
712
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000713config EISA
714 bool
715
716config SBUS
717 bool
718
719# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
720config MCA
721 bool
722
723config PCI
724 bool "PCI support" if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES)
725 default y if !40x && !CPM2 && !8xx && !APUS && !83xx && !85xx
726 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
727 default PCI_QSPAN if !4xx && !CPM2 && 8xx
728 help
729 Find out whether your system includes a PCI bus. PCI is the name of
730 a bus system, i.e. the way the CPU talks to the other stuff inside
731 your box. If you say Y here, the kernel will include drivers and
732 infrastructure code to support PCI bus devices.
733
734config PCI_DOMAINS
735 bool
736 default PCI
737
738config MPC83xx_PCI2
739 bool " Supprt for 2nd PCI host controller"
740 depends on PCI && MPC834x
741 default y if MPC834x_SYS
742
743config PCI_QSPAN
744 bool "QSpan PCI"
745 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000746 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000747 help
748 Say Y here if you have a system based on a Motorola 8xx-series
749 embedded processor with a QSPAN PCI interface, otherwise say N.
750
751config PCI_8260
752 bool
753 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000754 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000755 default y
756
757config 8260_PCI9
758 bool " Enable workaround for MPC826x erratum PCI 9"
759 depends on PCI_8260 && !ADS8272
760 default y
761
762choice
763 prompt " IDMA channel for PCI 9 workaround"
764 depends on 8260_PCI9
765
766config 8260_PCI9_IDMA1
767 bool "IDMA1"
768
769config 8260_PCI9_IDMA2
770 bool "IDMA2"
771
772config 8260_PCI9_IDMA3
773 bool "IDMA3"
774
775config 8260_PCI9_IDMA4
776 bool "IDMA4"
777
778endchoice
779
780source "drivers/pci/Kconfig"
781
782source "drivers/pcmcia/Kconfig"
783
784source "drivers/pci/hotplug/Kconfig"
785
786endmenu
787
788menu "Advanced setup"
789 depends on PPC32
790
791config ADVANCED_OPTIONS
792 bool "Prompt for advanced kernel configuration options"
793 help
794 This option will enable prompting for a variety of advanced kernel
795 configuration options. These options can cause the kernel to not
796 work if they are set incorrectly, but can be used to optimize certain
797 aspects of kernel memory management.
798
799 Unless you know what you are doing, say N here.
800
801comment "Default settings for advanced configuration options are used"
802 depends on !ADVANCED_OPTIONS
803
804config HIGHMEM_START_BOOL
805 bool "Set high memory pool address"
806 depends on ADVANCED_OPTIONS && HIGHMEM
807 help
808 This option allows you to set the base address of the kernel virtual
809 area used to map high memory pages. This can be useful in
810 optimizing the layout of kernel virtual memory.
811
812 Say N here unless you know what you are doing.
813
814config HIGHMEM_START
815 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
816 default "0xfe000000"
817
818config LOWMEM_SIZE_BOOL
819 bool "Set maximum low memory"
820 depends on ADVANCED_OPTIONS
821 help
822 This option allows you to set the maximum amount of memory which
823 will be used as "low memory", that is, memory which the kernel can
824 access directly, without having to set up a kernel virtual mapping.
825 This can be useful in optimizing the layout of kernel virtual
826 memory.
827
828 Say N here unless you know what you are doing.
829
830config LOWMEM_SIZE
831 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
832 default "0x30000000"
833
834config KERNEL_START_BOOL
835 bool "Set custom kernel base address"
836 depends on ADVANCED_OPTIONS
837 help
838 This option allows you to set the kernel virtual address at which
839 the kernel will map low memory (the kernel image will be linked at
840 this address). This can be useful in optimizing the virtual memory
841 layout of the system.
842
843 Say N here unless you know what you are doing.
844
845config KERNEL_START
846 hex "Virtual address of kernel base" if KERNEL_START_BOOL
847 default "0xc0000000"
848
849config TASK_SIZE_BOOL
850 bool "Set custom user task size"
851 depends on ADVANCED_OPTIONS
852 help
853 This option allows you to set the amount of virtual address space
854 allocated to user tasks. This can be useful in optimizing the
855 virtual memory layout of the system.
856
857 Say N here unless you know what you are doing.
858
859config TASK_SIZE
860 hex "Size of user task space" if TASK_SIZE_BOOL
861 default "0x80000000"
862
863config CONSISTENT_START_BOOL
864 bool "Set custom consistent memory pool address"
865 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
866 help
867 This option allows you to set the base virtual address
868 of the the consistent memory pool. This pool of virtual
869 memory is used to make consistent memory allocations.
870
871config CONSISTENT_START
872 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
873 default "0xff100000" if NOT_COHERENT_CACHE
874
875config CONSISTENT_SIZE_BOOL
876 bool "Set custom consistent memory pool size"
877 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
878 help
879 This option allows you to set the size of the the
880 consistent memory pool. This pool of virtual memory
881 is used to make consistent memory allocations.
882
883config CONSISTENT_SIZE
884 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
885 default "0x00200000" if NOT_COHERENT_CACHE
886
887config BOOT_LOAD_BOOL
888 bool "Set the boot link/load address"
889 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
890 help
891 This option allows you to set the initial load address of the zImage
892 or zImage.initrd file. This can be useful if you are on a board
893 which has a small amount of memory.
894
895 Say N here unless you know what you are doing.
896
897config BOOT_LOAD
898 hex "Link/load address for booting" if BOOT_LOAD_BOOL
899 default "0x00400000" if 40x || 8xx || 8260
900 default "0x01000000" if 44x
901 default "0x00800000"
902
903config PIN_TLB
904 bool "Pinned Kernel TLBs (860 ONLY)"
905 depends on ADVANCED_OPTIONS && 8xx
906endmenu
907
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000908if PPC64
909config KERNEL_START
910 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +1000911 default "0xc000000000000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000912endif
913
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000914source "net/Kconfig"
915
916source "drivers/Kconfig"
917
918source "fs/Kconfig"
919
920# XXX source "arch/ppc/8xx_io/Kconfig"
921
922# XXX source "arch/ppc/8260_io/Kconfig"
923
924source "arch/powerpc/platforms/iseries/Kconfig"
925
926source "lib/Kconfig"
927
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800928menu "Instrumentation Support"
929 depends on EXPERIMENTAL
930
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000931source "arch/powerpc/oprofile/Kconfig"
932
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800933config KPROBES
934 bool "Kprobes (EXPERIMENTAL)"
Paul Mackerras7568cb42005-11-14 17:30:17 +1100935 depends on PPC64
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800936 help
937 Kprobes allows you to trap at almost any kernel address and
938 execute a callback function. register_kprobe() establishes
939 a probepoint and specifies the callback. Kprobes is useful
940 for kernel debugging, non-intrusive instrumentation and testing.
941 If in doubt, say "N".
942endmenu
943
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000944source "arch/powerpc/Kconfig.debug"
945
946source "security/Kconfig"
947
948config KEYS_COMPAT
949 bool
950 depends on COMPAT && KEYS
951 default y
952
953source "crypto/Kconfig"