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1# 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
51d3082f 53 default y
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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
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112config 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"
187a0067 124 depends on PPC64
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125 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
187a0067 133 depends on PPC64
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134 default y if !POWER4_ONLY
135
136config POWER4
187a0067 137 depends on PPC64
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138 def_bool y
139
140config PPC_FPU
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141 bool
142 default y if PPC64
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143
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
e8a167ac 230 int "Maximum number of CPUs (2-128)"
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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"
5be396b0 264 depends on PPC32 && BROKEN
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265
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"
f9bd170a 278 select PPC_I8259
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279 select PPC_RTAS
280 select RTAS_ERROR_LOGGING
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281 default y
282
283config PPC_CHRP
284 bool " Common Hardware Reference Platform (CHRP) based machines"
285 depends on PPC_MULTIPLATFORM && PPC32
f9bd170a 286 select PPC_I8259
25635c71 287 select PPC_INDIRECT_PCI
033ef338 288 select PPC_RTAS
830825d6 289 select PPC_MPC106
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290 default y
291
292config PPC_PMAC
293 bool " Apple PowerMac based machines"
294 depends on PPC_MULTIPLATFORM
25635c71 295 select PPC_INDIRECT_PCI if PPC32
b6a4ce52 296 select PPC_MPC106 if PPC32
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297 default y
298
299config PPC_PMAC64
300 bool
301 depends on PPC_PMAC && POWER4
35499c01 302 select U3_DART
8ad200d7 303 select GENERIC_TBSYNC
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304 default y
305
306config PPC_PREP
307 bool " PowerPC Reference Platform (PReP) based machines"
5be396b0 308 depends on PPC_MULTIPLATFORM && PPC32 && BROKEN
f9bd170a 309 select PPC_I8259
25635c71 310 select PPC_INDIRECT_PCI
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311 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
8ad200d7 318 select GENERIC_TBSYNC
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319 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
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324config PPC_CELL
325 bool " Cell Broadband Processor Architecture"
14cf11af 326 depends on PPC_MULTIPLATFORM && PPC64
033ef338 327 select PPC_RTAS
edf03c1e 328 select MMIO_NVRAM
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329
330config PPC_OF
331 bool
187a0067 332 depends on PPC_MULTIPLATFORM # for now
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333 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
bbd0abda 346 depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP
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347 bool
348 default y
349
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350config PPC_RTAS
351 bool
352 default n
353
354config RTAS_ERROR_LOGGING
355 bool
356 depends on PPC_RTAS
357 default n
358
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359config RTAS_PROC
360 bool "Proc interface to RTAS"
e9add2ee 361 depends on PPC_RTAS
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362 default y
363
364config RTAS_FLASH
365 tristate "Firmware flash interface"
366 depends on PPC64 && RTAS_PROC
e9add2ee 367
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368config MMIO_NVRAM
369 bool
370 default n
371
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372config MPIC_BROKEN_U3
373 bool
374 depends on PPC_MAPLE
375 default y
376
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377config CELL_IIC
378 depends on PPC_CELL
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379 bool
380 default y
381
382config IBMVIO
383 depends on PPC_PSERIES || PPC_ISERIES
384 bool
385 default y
386
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387config 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
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394config PPC_MPC106
395 bool
396 default n
397
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398config GENERIC_TBSYNC
399 bool
400 default y if CONFIG_PPC32 && CONFIG_SMP
401 default n
402
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403source "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
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414config 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
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422config 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
67207b96 485source arch/powerpc/platforms/cell/Kconfig
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486
487menu "Kernel options"
488
489config HIGHMEM
490 bool "High memory support"
491 depends on PPC32
492
493source kernel/Kconfig.hz
494source kernel/Kconfig.preempt
495source "fs/Kconfig.binfmt"
496
497# We optimistically allocate largepages from the VM, so make the limit
498# large enough (16MB). This badly named config option is actually
499# max order + 1
500config FORCE_MAX_ZONEORDER
501 int
502 depends on PPC64
02864867 503 default "9" if PPC_64K_PAGES
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504 default "13"
505
506config MATH_EMULATION
507 bool "Math emulation"
508 depends on 4xx || 8xx || E200 || E500
509 ---help---
510 Some PowerPC chips designed for embedded applications do not have
511 a floating-point unit and therefore do not implement the
512 floating-point instructions in the PowerPC instruction set. If you
513 say Y here, the kernel will include code to emulate a floating-point
514 unit, which will allow programs that use floating-point
515 instructions to run.
516
517config IOMMU_VMERGE
518 bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
519 depends on EXPERIMENTAL && PPC64
520 default n
521 help
522 Cause IO segments sent to a device for DMA to be merged virtually
523 by the IOMMU when they happen to have been allocated contiguously.
524 This doesn't add pressure to the IOMMU allocator. However, some
525 drivers don't support getting large merged segments coming back
526 from *_map_sg(). Say Y if you know the drivers you are using are
527 properly handling this case.
528
529config HOTPLUG_CPU
530 bool "Support for enabling/disabling CPUs"
531 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
532 ---help---
533 Say Y here to be able to disable and re-enable individual
534 CPUs at runtime on SMP machines.
535
536 Say N if you are unsure.
537
538config KEXEC
539 bool "kexec system call (EXPERIMENTAL)"
540 depends on PPC_MULTIPLATFORM && EXPERIMENTAL
541 help
542 kexec is a system call that implements the ability to shutdown your
543 current kernel, and to start another kernel. It is like a reboot
544 but it is indepedent of the system firmware. And like a reboot
545 you can start any kernel with it, not just Linux.
546
547 The name comes from the similiarity to the exec system call.
548
549 It is an ongoing process to be certain the hardware in a machine
550 is properly shutdown, so do not be surprised if this code does not
551 initially work for you. It may help to enable device hotplugging
552 support. As of this writing the exact hardware interface is
553 strongly in flux, so no good recommendation can be made.
554
555config EMBEDDEDBOOT
556 bool
557 depends on 8xx || 8260
558 default y
559
560config PC_KEYBOARD
561 bool "PC PS/2 style Keyboard"
562 depends on 4xx || CPM2
563
564config PPCBUG_NVRAM
565 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
566 default y if PPC_PREP
567
568config IRQ_ALL_CPUS
569 bool "Distribute interrupts on all CPUs by default"
570 depends on SMP && !MV64360
571 help
572 This option gives the kernel permission to distribute IRQs across
573 multiple CPUs. Saying N here will route all IRQs to the first
574 CPU. Generally saying Y is safe, although some problems have been
575 reported with SMP Power Macintoshes with this option enabled.
576
577source "arch/powerpc/platforms/pseries/Kconfig"
578
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579config NUMA
580 bool "NUMA support"
581 depends on PPC64
582 default y if SMP && PPC_PSERIES
583
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584config ARCH_SELECT_MEMORY_MODEL
585 def_bool y
586 depends on PPC64
587
588config ARCH_FLATMEM_ENABLE
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589 def_bool y
590 depends on (PPC64 && !NUMA) || PPC32
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45fb6cea 592config ARCH_SPARSEMEM_ENABLE
14cf11af 593 def_bool y
9100b205 594 depends on PPC64
14cf11af 595
45fb6cea 596config ARCH_SPARSEMEM_DEFAULT
14cf11af 597 def_bool y
45fb6cea 598 depends on SMP && PPC_PSERIES
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599
600source "mm/Kconfig"
601
602config HAVE_ARCH_EARLY_PFN_TO_NID
603 def_bool y
604 depends on NEED_MULTIPLE_NODES
605
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606config ARCH_MEMORY_PROBE
607 def_bool y
608 depends on MEMORY_HOTPLUG
609
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610config PPC_64K_PAGES
611 bool "64k page size"
863c84b9 612 depends on PPC64
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613 help
614 This option changes the kernel logical page size to 64k. On machines
615 without processor support for 64k pages, the kernel will simulate
616 them by loading each individual 4k page on demand transparently,
617 while on hardware with such support, it will be used to map
618 normal application pages.
619
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620config SCHED_SMT
621 bool "SMT (Hyperthreading) scheduler support"
622 depends on PPC64 && SMP
623 default off
624 help
625 SMT scheduler support improves the CPU scheduler's decision making
626 when dealing with POWER5 cpus at a cost of slightly increased
627 overhead in some places. If unsure say N here.
628
629config PROC_DEVICETREE
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630 bool "Support for device tree in /proc"
631 depends on PROC_FS
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632 help
633 This option adds a device-tree directory under /proc which contains
634 an image of the device tree that the kernel copies from Open
5f296755 635 Firmware or other boot firmware. If unsure, say Y here.
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636
637source "arch/powerpc/platforms/prep/Kconfig"
638
639config CMDLINE_BOOL
640 bool "Default bootloader kernel arguments"
641 depends on !PPC_ISERIES
642
643config CMDLINE
644 string "Initial kernel command string"
645 depends on CMDLINE_BOOL
646 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
647 help
648 On some platforms, there is currently no way for the boot loader to
649 pass arguments to the kernel. For these platforms, you can supply
650 some command-line options at build time by entering them here. In
651 most cases you will need to specify the root device here.
652
653if !44x || BROKEN
654source kernel/power/Kconfig
655endif
656
657config SECCOMP
658 bool "Enable seccomp to safely compute untrusted bytecode"
659 depends on PROC_FS
660 default y
661 help
662 This kernel feature is useful for number crunching applications
663 that may need to compute untrusted bytecode during their
664 execution. By using pipes or other transports made available to
665 the process as file descriptors supporting the read/write
666 syscalls, it's possible to isolate those applications in
667 their own address space using seccomp. Once seccomp is
668 enabled via /proc/<pid>/seccomp, it cannot be disabled
669 and the task is only allowed to execute a few safe syscalls
670 defined by each seccomp mode.
671
672 If unsure, say Y. Only embedded should say N here.
673
674endmenu
675
676config ISA_DMA_API
677 bool
678 default y
679
680menu "Bus options"
681
682config ISA
683 bool "Support for ISA-bus hardware"
684 depends on PPC_PREP || PPC_CHRP
f9bd170a 685 select PPC_I8259
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686 help
687 Find out whether you have ISA slots on your motherboard. ISA is the
688 name of a bus system, i.e. the way the CPU talks to the other stuff
689 inside your box. If you have an Apple machine, say N here; if you
690 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
691 you have an embedded board, consult your board documentation.
692
693config GENERIC_ISA_DMA
694 bool
695 depends on PPC64 || POWER4 || 6xx && !CPM2
696 default y
697
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698config PPC_I8259
699 bool
700 default y if 85xx
701 default n
702
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703config PPC_INDIRECT_PCI
704 bool
705 depends on PCI
706 default y if 40x || 44x || 85xx || 83xx
707 default n
708
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709config EISA
710 bool
711
712config SBUS
713 bool
714
715# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
716config MCA
717 bool
718
719config PCI
720 bool "PCI support" if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES)
721 default y if !40x && !CPM2 && !8xx && !APUS && !83xx && !85xx
722 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
723 default PCI_QSPAN if !4xx && !CPM2 && 8xx
724 help
725 Find out whether your system includes a PCI bus. PCI is the name of
726 a bus system, i.e. the way the CPU talks to the other stuff inside
727 your box. If you say Y here, the kernel will include drivers and
728 infrastructure code to support PCI bus devices.
729
730config PCI_DOMAINS
731 bool
732 default PCI
733
734config MPC83xx_PCI2
735 bool " Supprt for 2nd PCI host controller"
736 depends on PCI && MPC834x
737 default y if MPC834x_SYS
738
739config PCI_QSPAN
740 bool "QSpan PCI"
741 depends on !4xx && !CPM2 && 8xx
f9bd170a 742 select PPC_I8259
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743 help
744 Say Y here if you have a system based on a Motorola 8xx-series
745 embedded processor with a QSPAN PCI interface, otherwise say N.
746
747config PCI_8260
748 bool
749 depends on PCI && 8260
25635c71 750 select PPC_INDIRECT_PCI
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751 default y
752
753config 8260_PCI9
754 bool " Enable workaround for MPC826x erratum PCI 9"
755 depends on PCI_8260 && !ADS8272
756 default y
757
758choice
759 prompt " IDMA channel for PCI 9 workaround"
760 depends on 8260_PCI9
761
762config 8260_PCI9_IDMA1
763 bool "IDMA1"
764
765config 8260_PCI9_IDMA2
766 bool "IDMA2"
767
768config 8260_PCI9_IDMA3
769 bool "IDMA3"
770
771config 8260_PCI9_IDMA4
772 bool "IDMA4"
773
774endchoice
775
776source "drivers/pci/Kconfig"
777
778source "drivers/pcmcia/Kconfig"
779
780source "drivers/pci/hotplug/Kconfig"
781
782endmenu
783
784menu "Advanced setup"
785 depends on PPC32
786
787config ADVANCED_OPTIONS
788 bool "Prompt for advanced kernel configuration options"
789 help
790 This option will enable prompting for a variety of advanced kernel
791 configuration options. These options can cause the kernel to not
792 work if they are set incorrectly, but can be used to optimize certain
793 aspects of kernel memory management.
794
795 Unless you know what you are doing, say N here.
796
797comment "Default settings for advanced configuration options are used"
798 depends on !ADVANCED_OPTIONS
799
800config HIGHMEM_START_BOOL
801 bool "Set high memory pool address"
802 depends on ADVANCED_OPTIONS && HIGHMEM
803 help
804 This option allows you to set the base address of the kernel virtual
805 area used to map high memory pages. This can be useful in
806 optimizing the layout of kernel virtual memory.
807
808 Say N here unless you know what you are doing.
809
810config HIGHMEM_START
811 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
812 default "0xfe000000"
813
814config LOWMEM_SIZE_BOOL
815 bool "Set maximum low memory"
816 depends on ADVANCED_OPTIONS
817 help
818 This option allows you to set the maximum amount of memory which
819 will be used as "low memory", that is, memory which the kernel can
820 access directly, without having to set up a kernel virtual mapping.
821 This can be useful in optimizing the layout of kernel virtual
822 memory.
823
824 Say N here unless you know what you are doing.
825
826config LOWMEM_SIZE
827 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
828 default "0x30000000"
829
830config KERNEL_START_BOOL
831 bool "Set custom kernel base address"
832 depends on ADVANCED_OPTIONS
833 help
834 This option allows you to set the kernel virtual address at which
835 the kernel will map low memory (the kernel image will be linked at
836 this address). This can be useful in optimizing the virtual memory
837 layout of the system.
838
839 Say N here unless you know what you are doing.
840
841config KERNEL_START
842 hex "Virtual address of kernel base" if KERNEL_START_BOOL
843 default "0xc0000000"
844
845config TASK_SIZE_BOOL
846 bool "Set custom user task size"
847 depends on ADVANCED_OPTIONS
848 help
849 This option allows you to set the amount of virtual address space
850 allocated to user tasks. This can be useful in optimizing the
851 virtual memory layout of the system.
852
853 Say N here unless you know what you are doing.
854
855config TASK_SIZE
856 hex "Size of user task space" if TASK_SIZE_BOOL
857 default "0x80000000"
858
859config CONSISTENT_START_BOOL
860 bool "Set custom consistent memory pool address"
861 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
862 help
863 This option allows you to set the base virtual address
864 of the the consistent memory pool. This pool of virtual
865 memory is used to make consistent memory allocations.
866
867config CONSISTENT_START
868 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
869 default "0xff100000" if NOT_COHERENT_CACHE
870
871config CONSISTENT_SIZE_BOOL
872 bool "Set custom consistent memory pool size"
873 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
874 help
875 This option allows you to set the size of the the
876 consistent memory pool. This pool of virtual memory
877 is used to make consistent memory allocations.
878
879config CONSISTENT_SIZE
880 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
881 default "0x00200000" if NOT_COHERENT_CACHE
882
883config BOOT_LOAD_BOOL
884 bool "Set the boot link/load address"
885 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
886 help
887 This option allows you to set the initial load address of the zImage
888 or zImage.initrd file. This can be useful if you are on a board
889 which has a small amount of memory.
890
891 Say N here unless you know what you are doing.
892
893config BOOT_LOAD
894 hex "Link/load address for booting" if BOOT_LOAD_BOOL
895 default "0x00400000" if 40x || 8xx || 8260
896 default "0x01000000" if 44x
897 default "0x00800000"
898
899config PIN_TLB
900 bool "Pinned Kernel TLBs (860 ONLY)"
901 depends on ADVANCED_OPTIONS && 8xx
902endmenu
903
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904if PPC64
905config KERNEL_START
906 hex
eeb2d218 907 default "0xc000000000000000"
cabb5587
SR
908endif
909
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910source "net/Kconfig"
911
912source "drivers/Kconfig"
913
914source "fs/Kconfig"
915
916# XXX source "arch/ppc/8xx_io/Kconfig"
917
918# XXX source "arch/ppc/8260_io/Kconfig"
919
920source "arch/powerpc/platforms/iseries/Kconfig"
921
922source "lib/Kconfig"
923
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924menu "Instrumentation Support"
925 depends on EXPERIMENTAL
926
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927source "arch/powerpc/oprofile/Kconfig"
928
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PP
929config KPROBES
930 bool "Kprobes (EXPERIMENTAL)"
7568cb4e 931 depends on PPC64
cd6b0762
PP
932 help
933 Kprobes allows you to trap at almost any kernel address and
934 execute a callback function. register_kprobe() establishes
935 a probepoint and specifies the callback. Kprobes is useful
936 for kernel debugging, non-intrusive instrumentation and testing.
937 If in doubt, say "N".
938endmenu
939
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940source "arch/powerpc/Kconfig.debug"
941
942source "security/Kconfig"
943
944config KEYS_COMPAT
945 bool
946 depends on COMPAT && KEYS
947 default y
948
949source "crypto/Kconfig"