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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
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29config GENERIC_HARDIRQS
30 bool
31 default y
32
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33config IRQ_PER_CPU
34 bool
35 default y
36
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37config RWSEM_GENERIC_SPINLOCK
38 bool
39
40config RWSEM_XCHGADD_ALGORITHM
41 bool
42 default y
43
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44config GENERIC_HWEIGHT
45 bool
46 default y
47
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48config GENERIC_CALIBRATE_DELAY
49 bool
50 default y
51
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52config GENERIC_FIND_NEXT_BIT
53 bool
54 default y
55
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56config PPC
57 bool
58 default y
59
60config EARLY_PRINTK
61 bool
51d3082f 62 default y
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63
64config COMPAT
65 bool
66 default y if PPC64
67
68config SYSVIPC_COMPAT
69 bool
70 depends on COMPAT && SYSVIPC
71 default y
72
73# All PPC32s use generic nvram driver through ppc_md
74config GENERIC_NVRAM
75 bool
76 default y if PPC32
77
78config SCHED_NO_NO_OMIT_FRAME_POINTER
79 bool
80 default y
81
82config ARCH_MAY_HAVE_PC_FDC
83 bool
84 default y
85
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86config PPC_OF
87 def_bool y
88
89config PPC_UDBG_16550
90 bool
91 default n
92
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93config GENERIC_TBSYNC
94 bool
95 default y if PPC32 && SMP
96 default n
97
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98config AUDIT_ARCH
99 bool
100 default y
101
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102config DEFAULT_UIMAGE
103 bool
104 help
105 Used to allow a board to specify it wants a uImage built by default
106 default n
107
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108menu "Processor support"
109choice
110 prompt "Processor Type"
111 depends on PPC32
112 default 6xx
113
08264cbc 114config CLASSIC32
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115 bool "6xx/7xx/74xx"
116 select PPC_FPU
08264cbc 117 select 6xx
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118 help
119 There are four families of PowerPC chips supported. The more common
120 types (601, 603, 604, 740, 750, 7400), the Motorola embedded
121 versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
122 embedded versions (403 and 405) and the high end 64 bit Power
123 processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
124
125 Unless you are building a kernel for one of the embedded processor
126 systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx.
127 Note that the kernel runs in 32-bit mode even on 64-bit chips.
128
129config PPC_52xx
130 bool "Freescale 52xx"
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131 select 6xx
132 select PPC_FPU
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133
134config PPC_82xx
135 bool "Freescale 82xx"
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136 select 6xx
137 select PPC_FPU
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138
139config PPC_83xx
140 bool "Freescale 83xx"
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141 select 6xx
142 select FSL_SOC
143 select 83xx
144 select PPC_FPU
14cf11af 145
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146config PPC_85xx
147 bool "Freescale 85xx"
148 select E500
149 select FSL_SOC
150 select 85xx
151
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152config PPC_86xx
153 bool "Freescale 86xx"
154 select 6xx
155 select FSL_SOC
156 select PPC_FPU
157 select ALTIVEC
158 help
159 The Freescale E600 SoCs have 74xx cores.
160
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161config 40x
162 bool "AMCC 40x"
163
164config 44x
165 bool "AMCC 44x"
166
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167config 8xx
168 bool "Freescale 8xx"
169
170config E200
171 bool "Freescale e200"
172
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173endchoice
174
175config POWER4_ONLY
176 bool "Optimize for POWER4"
187a0067 177 depends on PPC64
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178 default n
179 ---help---
180 Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
181 The resulting binary will not work on POWER3 or RS64 processors
182 when compiled with binutils 2.15 or later.
183
184config POWER3
185 bool
187a0067 186 depends on PPC64
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187 default y if !POWER4_ONLY
188
189config POWER4
187a0067 190 depends on PPC64
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191 def_bool y
192
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193config 6xx
194 bool
195
196# this is temp to handle compat with arch=ppc
197config 83xx
198 bool
199
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200# this is temp to handle compat with arch=ppc
201config 85xx
202 bool
203
204config E500
205 bool
206
14cf11af 207config PPC_FPU
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208 bool
209 default y if PPC64
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210
211config BOOKE
212 bool
213 depends on E200 || E500
214 default y
215
216config FSL_BOOKE
217 bool
218 depends on E200 || E500
219 default y
220
221config PTE_64BIT
222 bool
223 depends on 44x || E500
224 default y if 44x
225 default y if E500 && PHYS_64BIT
226
227config PHYS_64BIT
228 bool 'Large physical address support' if E500
229 depends on 44x || E500
230 default y if 44x
231 ---help---
232 This option enables kernel support for larger than 32-bit physical
233 addresses. This features is not be available on all e500 cores.
234
235 If in doubt, say N here.
236
237config ALTIVEC
238 bool "AltiVec Support"
08264cbc 239 depends on CLASSIC32 || POWER4
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240 ---help---
241 This option enables kernel support for the Altivec extensions to the
242 PowerPC processor. The kernel currently supports saving and restoring
243 altivec registers, and turning on the 'altivec enable' bit so user
244 processes can execute altivec instructions.
245
246 This option is only usefully if you have a processor that supports
247 altivec (G4, otherwise known as 74xx series), but does not have
248 any affect on a non-altivec cpu (it does, however add code to the
249 kernel).
250
251 If in doubt, say Y here.
252
253config SPE
254 bool "SPE Support"
255 depends on E200 || E500
63dafe57 256 default y
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257 ---help---
258 This option enables kernel support for the Signal Processing
259 Extensions (SPE) to the PowerPC processor. The kernel currently
260 supports saving and restoring SPE registers, and turning on the
261 'spe enable' bit so user processes can execute SPE instructions.
262
263 This option is only useful if you have a processor that supports
264 SPE (e500, otherwise known as 85xx series), but does not have any
265 effect on a non-spe cpu (it does, however add code to the kernel).
266
267 If in doubt, say Y here.
268
269config PPC_STD_MMU
270 bool
271 depends on 6xx || POWER3 || POWER4 || PPC64
272 default y
273
274config PPC_STD_MMU_32
275 def_bool y
276 depends on PPC_STD_MMU && PPC32
277
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278config VIRT_CPU_ACCOUNTING
279 bool "Deterministic task and CPU time accounting"
280 depends on PPC64
281 default y
282 help
283 Select this option to enable more accurate task and CPU time
284 accounting. This is done by reading a CPU counter on each
285 kernel entry and exit and on transitions within the kernel
286 between system, softirq and hardirq state, so there is a
287 small performance impact. This also enables accounting of
288 stolen time on logically-partitioned systems running on
289 IBM POWER5-based machines.
290
291 If in doubt, say Y here.
292
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293config SMP
294 depends on PPC_STD_MMU
295 bool "Symmetric multi-processing support"
296 ---help---
297 This enables support for systems with more than one CPU. If you have
298 a system with only one CPU, say N. If you have a system with more
299 than one CPU, say Y. Note that the kernel does not currently
300 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
301 since they have inadequate hardware support for multiprocessor
302 operation.
303
304 If you say N here, the kernel will run on single and multiprocessor
305 machines, but will use only one CPU of a multiprocessor machine. If
306 you say Y here, the kernel will run on single-processor machines.
307 On a single-processor machine, the kernel will run faster if you say
308 N here.
309
310 If you don't know what to do here, say N.
311
312config NR_CPUS
e8a167ac 313 int "Maximum number of CPUs (2-128)"
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314 range 2 128
315 depends on SMP
316 default "32" if PPC64
317 default "4"
318
319config NOT_COHERENT_CACHE
320 bool
321 depends on 4xx || 8xx || E200
322 default y
323endmenu
324
325source "init/Kconfig"
326
327menu "Platform support"
08264cbc 328 depends on PPC64 || CLASSIC32
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329
330choice
331 prompt "Machine type"
332 default PPC_MULTIPLATFORM
333
334config PPC_MULTIPLATFORM
335 bool "Generic desktop/server/laptop"
336 help
337 Select this option if configuring for an IBM pSeries or
338 RS/6000 machine, an Apple machine, or a PReP, CHRP,
339 Maple or Cell-based machine.
340
341config PPC_ISERIES
342 bool "IBM Legacy iSeries"
343 depends on PPC64
344
345config EMBEDDED6xx
346 bool "Embedded 6xx/7xx/7xxx-based board"
c5d56332 347 depends on PPC32 && (BROKEN||BROKEN_ON_SMP)
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348
349config APUS
350 bool "Amiga-APUS"
351 depends on PPC32 && BROKEN
352 help
353 Select APUS if configuring for a PowerUP Amiga.
354 More information is available at:
355 <http://linux-apus.sourceforge.net/>.
356endchoice
357
358config PPC_PSERIES
359 depends on PPC_MULTIPLATFORM && PPC64
4a3ecc62 360 bool "IBM pSeries & new (POWER5-based) iSeries"
7233593b 361 select MPIC
f9bd170a 362 select PPC_I8259
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363 select PPC_RTAS
364 select RTAS_ERROR_LOGGING
13b8a272 365 select PPC_UDBG_16550
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366 default y
367
368config PPC_CHRP
4a3ecc62 369 bool "Common Hardware Reference Platform (CHRP) based machines"
14cf11af 370 depends on PPC_MULTIPLATFORM && PPC32
7233593b 371 select MPIC
f9bd170a 372 select PPC_I8259
25635c71 373 select PPC_INDIRECT_PCI
033ef338 374 select PPC_RTAS
830825d6 375 select PPC_MPC106
13b8a272 376 select PPC_UDBG_16550
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377 default y
378
379config PPC_PMAC
4a3ecc62 380 bool "Apple PowerMac based machines"
14cf11af 381 depends on PPC_MULTIPLATFORM
7233593b 382 select MPIC
25635c71 383 select PPC_INDIRECT_PCI if PPC32
b6a4ce52 384 select PPC_MPC106 if PPC32
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385 default y
386
387config PPC_PMAC64
388 bool
389 depends on PPC_PMAC && POWER4
7233593b 390 select MPIC
35499c01 391 select U3_DART
1beb6a7d 392 select MPIC_BROKEN_U3
8ad200d7 393 select GENERIC_TBSYNC
f39224a8 394 select PPC_970_NAP
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395 default y
396
397config PPC_PREP
4a3ecc62 398 bool "PowerPC Reference Platform (PReP) based machines"
5be396b0 399 depends on PPC_MULTIPLATFORM && PPC32 && BROKEN
7233593b 400 select MPIC
f9bd170a 401 select PPC_I8259
25635c71 402 select PPC_INDIRECT_PCI
13b8a272 403 select PPC_UDBG_16550
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404 default y
405
406config PPC_MAPLE
407 depends on PPC_MULTIPLATFORM && PPC64
4a3ecc62 408 bool "Maple 970FX Evaluation Board"
7233593b 409 select MPIC
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410 select U3_DART
411 select MPIC_BROKEN_U3
8ad200d7 412 select GENERIC_TBSYNC
13b8a272 413 select PPC_UDBG_16550
f39224a8 414 select PPC_970_NAP
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415 default n
416 help
417 This option enables support for the Maple 970FX Evaluation Board.
418 For more informations, refer to <http://www.970eval.com>
419
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420config PPC_PASEMI
421 depends on PPC_MULTIPLATFORM && PPC64
422 bool "PA Semi SoC-based platforms"
423 default n
424 select MPIC
425 select PPC_UDBG_16550
426 select GENERIC_TBSYNC
427 help
428 This option enables support for PA Semi's PWRficient line
429 of SoC processors, including PA6T-1682M
430
f3f66f59 431config PPC_CELL
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432 bool
433 default n
434
435config PPC_CELL_NATIVE
436 bool
437 select PPC_CELL
438 default n
439
440config PPC_IBM_CELL_BLADE
f127a2b5 441 bool "IBM Cell Blade"
14cf11af 442 depends on PPC_MULTIPLATFORM && PPC64
c01ea72a 443 select PPC_CELL_NATIVE
033ef338 444 select PPC_RTAS
edf03c1e 445 select MMIO_NVRAM
13b8a272 446 select PPC_UDBG_16550
94b60ec1 447 select UDBG_RTAS_CONSOLE
14cf11af 448
cc46bb98 449config UDBG_RTAS_CONSOLE
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450 bool "RTAS based debug console"
451 depends on PPC_RTAS
cc46bb98 452 default n
14cf11af 453
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454config XICS
455 depends on PPC_PSERIES
456 bool
457 default y
458
459config U3_DART
460 bool
461 depends on PPC_MULTIPLATFORM && PPC64
462 default n
463
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464config PPC_RTAS
465 bool
466 default n
467
468config RTAS_ERROR_LOGGING
469 bool
470 depends on PPC_RTAS
471 default n
472
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473config RTAS_PROC
474 bool "Proc interface to RTAS"
e9add2ee 475 depends on PPC_RTAS
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476 default y
477
478config RTAS_FLASH
479 tristate "Firmware flash interface"
480 depends on PPC64 && RTAS_PROC
e9add2ee 481
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482config MMIO_NVRAM
483 bool
484 default n
485
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486config MPIC_BROKEN_U3
487 bool
488 depends on PPC_MAPLE
489 default y
490
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491config IBMVIO
492 depends on PPC_PSERIES || PPC_ISERIES
493 bool
494 default y
495
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496config IBMEBUS
497 depends on PPC_PSERIES
498 bool "Support for GX bus based adapters"
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499 help
500 Bus device driver for GX bus based adapters.
501
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502config PPC_MPC106
503 bool
504 default n
505
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506config PPC_970_NAP
507 bool
508 default n
509
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510source "drivers/cpufreq/Kconfig"
511
512config CPU_FREQ_PMAC
513 bool "Support for Apple PowerBooks"
514 depends on CPU_FREQ && ADB_PMU && PPC32
515 select CPU_FREQ_TABLE
516 help
517 This adds support for frequency switching on Apple PowerBooks,
518 this currently includes some models of iBook & Titanium
519 PowerBook.
520
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521config CPU_FREQ_PMAC64
522 bool "Support for some Apple G5s"
7ed14c21 523 depends on CPU_FREQ && PPC64
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524 select CPU_FREQ_TABLE
525 help
526 This adds support for frequency switching on Apple iMac G5,
527 and some of the more recent desktop G5 machines as well.
528
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529config PPC601_SYNC_FIX
530 bool "Workarounds for PPC601 bugs"
531 depends on 6xx && (PPC_PREP || PPC_PMAC)
532 help
533 Some versions of the PPC601 (the first PowerPC chip) have bugs which
534 mean that extra synchronization instructions are required near
535 certain instructions, typically those that make major changes to the
536 CPU state. These extra instructions reduce performance slightly.
537 If you say N here, these extra instructions will not be included,
538 resulting in a kernel which will run faster but may not run at all
539 on some systems with the PPC601 chip.
540
541 If in doubt, say Y here.
542
543config TAU
9b781727 544 bool "On-chip CPU temperature sensor support"
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545 depends on 6xx
546 help
547 G3 and G4 processors have an on-chip temperature sensor called the
548 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
549 temperature within 2-4 degrees Celsius. This option shows the current
550 on-die temperature in /proc/cpuinfo if the cpu supports it.
551
552 Unfortunately, on some chip revisions, this sensor is very inaccurate
9b781727 553 and in many cases, does not work at all, so don't assume the cpu
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554 temp is actually what /proc/cpuinfo says it is.
555
556config TAU_INT
557 bool "Interrupt driven TAU driver (DANGEROUS)"
558 depends on TAU
559 ---help---
560 The TAU supports an interrupt driven mode which causes an interrupt
561 whenever the temperature goes out of range. This is the fastest way
562 to get notified the temp has exceeded a range. With this option off,
563 a timer is used to re-check the temperature periodically.
564
565 However, on some cpus it appears that the TAU interrupt hardware
566 is buggy and can cause a situation which would lead unexplained hard
567 lockups.
568
569 Unless you are extending the TAU driver, or enjoy kernel/hardware
570 debugging, leave this option off.
571
572config TAU_AVERAGE
573 bool "Average high and low temp"
574 depends on TAU
575 ---help---
576 The TAU hardware can compare the temperature to an upper and lower
577 bound. The default behavior is to show both the upper and lower
578 bound in /proc/cpuinfo. If the range is large, the temperature is
579 either changing a lot, or the TAU hardware is broken (likely on some
580 G4's). If the range is small (around 4 degrees), the temperature is
581 relatively stable. If you say Y here, a single temperature value,
582 halfway between the upper and lower bounds, will be reported in
583 /proc/cpuinfo.
584
585 If in doubt, say N here.
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586
587config PPC_TODC
588 depends on EMBEDDED6xx
589 bool "Generic Time-of-day Clock (TODC) support"
590 ---help---
591 This adds support for many TODC/RTC chips.
592
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593endmenu
594
595source arch/powerpc/platforms/embedded6xx/Kconfig
596source arch/powerpc/platforms/4xx/Kconfig
08264cbc 597source arch/powerpc/platforms/83xx/Kconfig
14cf11af 598source arch/powerpc/platforms/85xx/Kconfig
c9b484b5 599source arch/powerpc/platforms/86xx/Kconfig
14cf11af 600source arch/powerpc/platforms/8xx/Kconfig
67207b96 601source arch/powerpc/platforms/cell/Kconfig
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602
603menu "Kernel options"
604
605config HIGHMEM
606 bool "High memory support"
607 depends on PPC32
608
609source kernel/Kconfig.hz
610source kernel/Kconfig.preempt
611source "fs/Kconfig.binfmt"
612
613# We optimistically allocate largepages from the VM, so make the limit
614# large enough (16MB). This badly named config option is actually
615# max order + 1
616config FORCE_MAX_ZONEORDER
617 int
618 depends on PPC64
02864867 619 default "9" if PPC_64K_PAGES
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620 default "13"
621
622config MATH_EMULATION
623 bool "Math emulation"
624 depends on 4xx || 8xx || E200 || E500
625 ---help---
626 Some PowerPC chips designed for embedded applications do not have
627 a floating-point unit and therefore do not implement the
628 floating-point instructions in the PowerPC instruction set. If you
629 say Y here, the kernel will include code to emulate a floating-point
630 unit, which will allow programs that use floating-point
631 instructions to run.
632
633config IOMMU_VMERGE
634 bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
635 depends on EXPERIMENTAL && PPC64
636 default n
637 help
638 Cause IO segments sent to a device for DMA to be merged virtually
639 by the IOMMU when they happen to have been allocated contiguously.
640 This doesn't add pressure to the IOMMU allocator. However, some
641 drivers don't support getting large merged segments coming back
642 from *_map_sg(). Say Y if you know the drivers you are using are
643 properly handling this case.
644
645config HOTPLUG_CPU
646 bool "Support for enabling/disabling CPUs"
647 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
648 ---help---
649 Say Y here to be able to disable and re-enable individual
650 CPUs at runtime on SMP machines.
651
652 Say N if you are unsure.
653
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654config ARCH_ENABLE_MEMORY_HOTPLUG
655 def_bool y
656
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657config KEXEC
658 bool "kexec system call (EXPERIMENTAL)"
659 depends on PPC_MULTIPLATFORM && EXPERIMENTAL
660 help
661 kexec is a system call that implements the ability to shutdown your
662 current kernel, and to start another kernel. It is like a reboot
1f1332f7 663 but it is independent of the system firmware. And like a reboot
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664 you can start any kernel with it, not just Linux.
665
1f1332f7 666 The name comes from the similarity to the exec system call.
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667
668 It is an ongoing process to be certain the hardware in a machine
669 is properly shutdown, so do not be surprised if this code does not
670 initially work for you. It may help to enable device hotplugging
671 support. As of this writing the exact hardware interface is
672 strongly in flux, so no good recommendation can be made.
673
e8625d46 674config CRASH_DUMP
cd9c99d7 675 bool "Build a kdump crash kernel (EXPERIMENTAL)"
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676 depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL
677 help
678 Build a kernel suitable for use as a kdump capture kernel.
679 The kernel will be linked at a different address than normal, and
680 so can only be used for Kdump.
681
682 Don't change this unless you know what you are doing.
683
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684config EMBEDDEDBOOT
685 bool
686 depends on 8xx || 8260
687 default y
688
689config PC_KEYBOARD
690 bool "PC PS/2 style Keyboard"
691 depends on 4xx || CPM2
692
693config PPCBUG_NVRAM
694 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
695 default y if PPC_PREP
696
697config IRQ_ALL_CPUS
698 bool "Distribute interrupts on all CPUs by default"
699 depends on SMP && !MV64360
700 help
701 This option gives the kernel permission to distribute IRQs across
702 multiple CPUs. Saying N here will route all IRQs to the first
703 CPU. Generally saying Y is safe, although some problems have been
704 reported with SMP Power Macintoshes with this option enabled.
705
706source "arch/powerpc/platforms/pseries/Kconfig"
707
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708config NUMA
709 bool "NUMA support"
710 depends on PPC64
711 default y if SMP && PPC_PSERIES
712
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713config NODES_SHIFT
714 int
715 default "4"
716 depends on NEED_MULTIPLE_NODES
717
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718config ARCH_SELECT_MEMORY_MODEL
719 def_bool y
720 depends on PPC64
721
722config ARCH_FLATMEM_ENABLE
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723 def_bool y
724 depends on (PPC64 && !NUMA) || PPC32
14cf11af 725
45fb6cea 726config ARCH_SPARSEMEM_ENABLE
14cf11af 727 def_bool y
9100b205 728 depends on PPC64
14cf11af 729
45fb6cea 730config ARCH_SPARSEMEM_DEFAULT
14cf11af 731 def_bool y
45fb6cea 732 depends on SMP && PPC_PSERIES
14cf11af 733
c67c3cb4 734config ARCH_POPULATES_NODE_MAP
14cf11af 735 def_bool y
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736
737source "mm/Kconfig"
14cf11af 738
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739config ARCH_MEMORY_PROBE
740 def_bool y
741 depends on MEMORY_HOTPLUG
742
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743config PPC_64K_PAGES
744 bool "64k page size"
863c84b9 745 depends on PPC64
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746 help
747 This option changes the kernel logical page size to 64k. On machines
748 without processor support for 64k pages, the kernel will simulate
749 them by loading each individual 4k page on demand transparently,
750 while on hardware with such support, it will be used to map
751 normal application pages.
752
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753config SCHED_SMT
754 bool "SMT (Hyperthreading) scheduler support"
755 depends on PPC64 && SMP
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756 help
757 SMT scheduler support improves the CPU scheduler's decision making
758 when dealing with POWER5 cpus at a cost of slightly increased
759 overhead in some places. If unsure say N here.
760
761config PROC_DEVICETREE
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762 bool "Support for device tree in /proc"
763 depends on PROC_FS
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764 help
765 This option adds a device-tree directory under /proc which contains
766 an image of the device tree that the kernel copies from Open
5f296755 767 Firmware or other boot firmware. If unsure, say Y here.
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768
769source "arch/powerpc/platforms/prep/Kconfig"
770
771config CMDLINE_BOOL
772 bool "Default bootloader kernel arguments"
773 depends on !PPC_ISERIES
774
775config CMDLINE
776 string "Initial kernel command string"
777 depends on CMDLINE_BOOL
778 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
779 help
780 On some platforms, there is currently no way for the boot loader to
781 pass arguments to the kernel. For these platforms, you can supply
782 some command-line options at build time by entering them here. In
783 most cases you will need to specify the root device here.
784
785if !44x || BROKEN
786source kernel/power/Kconfig
787endif
788
789config SECCOMP
790 bool "Enable seccomp to safely compute untrusted bytecode"
791 depends on PROC_FS
792 default y
793 help
794 This kernel feature is useful for number crunching applications
795 that may need to compute untrusted bytecode during their
796 execution. By using pipes or other transports made available to
797 the process as file descriptors supporting the read/write
798 syscalls, it's possible to isolate those applications in
799 their own address space using seccomp. Once seccomp is
800 enabled via /proc/<pid>/seccomp, it cannot be disabled
801 and the task is only allowed to execute a few safe syscalls
802 defined by each seccomp mode.
803
804 If unsure, say Y. Only embedded should say N here.
805
806endmenu
807
808config ISA_DMA_API
809 bool
810 default y
811
812menu "Bus options"
813
814config ISA
815 bool "Support for ISA-bus hardware"
816 depends on PPC_PREP || PPC_CHRP
f9bd170a 817 select PPC_I8259
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818 help
819 Find out whether you have ISA slots on your motherboard. ISA is the
820 name of a bus system, i.e. the way the CPU talks to the other stuff
821 inside your box. If you have an Apple machine, say N here; if you
822 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
823 you have an embedded board, consult your board documentation.
824
825config GENERIC_ISA_DMA
826 bool
827 depends on PPC64 || POWER4 || 6xx && !CPM2
828 default y
829
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830config MPIC
831 bool
832 default n
833
834config MPIC_WEIRD
835 bool
836 default n
837
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838config PPC_I8259
839 bool
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840 default n
841
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842config PPC_INDIRECT_PCI
843 bool
844 depends on PCI
63dafe57 845 default y if 40x || 44x
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846 default n
847
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848config EISA
849 bool
850
851config SBUS
852 bool
853
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854config FSL_SOC
855 bool
856
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857# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
858config MCA
859 bool
860
861config PCI
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862 bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \
863 || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES) || MPC7448HPC2
864 default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx \
865 && !PPC_85xx && !PPC_86xx
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866 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
867 default PCI_QSPAN if !4xx && !CPM2 && 8xx
868 help
869 Find out whether your system includes a PCI bus. PCI is the name of
870 a bus system, i.e. the way the CPU talks to the other stuff inside
871 your box. If you say Y here, the kernel will include drivers and
872 infrastructure code to support PCI bus devices.
873
874config PCI_DOMAINS
875 bool
876 default PCI
877
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878config PCI_QSPAN
879 bool "QSpan PCI"
880 depends on !4xx && !CPM2 && 8xx
f9bd170a 881 select PPC_I8259
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882 help
883 Say Y here if you have a system based on a Motorola 8xx-series
884 embedded processor with a QSPAN PCI interface, otherwise say N.
885
886config PCI_8260
887 bool
888 depends on PCI && 8260
25635c71 889 select PPC_INDIRECT_PCI
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890 default y
891
892config 8260_PCI9
4a3ecc62 893 bool "Enable workaround for MPC826x erratum PCI 9"
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894 depends on PCI_8260 && !ADS8272
895 default y
896
897choice
4a3ecc62 898 prompt "IDMA channel for PCI 9 workaround"
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899 depends on 8260_PCI9
900
901config 8260_PCI9_IDMA1
902 bool "IDMA1"
903
904config 8260_PCI9_IDMA2
905 bool "IDMA2"
906
907config 8260_PCI9_IDMA3
908 bool "IDMA3"
909
910config 8260_PCI9_IDMA4
911 bool "IDMA4"
912
913endchoice
914
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915source "drivers/pci/pcie/Kconfig"
916
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917source "drivers/pci/Kconfig"
918
919source "drivers/pcmcia/Kconfig"
920
921source "drivers/pci/hotplug/Kconfig"
922
923endmenu
924
925menu "Advanced setup"
926 depends on PPC32
927
928config ADVANCED_OPTIONS
929 bool "Prompt for advanced kernel configuration options"
930 help
931 This option will enable prompting for a variety of advanced kernel
932 configuration options. These options can cause the kernel to not
933 work if they are set incorrectly, but can be used to optimize certain
934 aspects of kernel memory management.
935
936 Unless you know what you are doing, say N here.
937
938comment "Default settings for advanced configuration options are used"
939 depends on !ADVANCED_OPTIONS
940
941config HIGHMEM_START_BOOL
942 bool "Set high memory pool address"
943 depends on ADVANCED_OPTIONS && HIGHMEM
944 help
945 This option allows you to set the base address of the kernel virtual
946 area used to map high memory pages. This can be useful in
947 optimizing the layout of kernel virtual memory.
948
949 Say N here unless you know what you are doing.
950
951config HIGHMEM_START
952 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
953 default "0xfe000000"
954
955config LOWMEM_SIZE_BOOL
956 bool "Set maximum low memory"
957 depends on ADVANCED_OPTIONS
958 help
959 This option allows you to set the maximum amount of memory which
960 will be used as "low memory", that is, memory which the kernel can
961 access directly, without having to set up a kernel virtual mapping.
962 This can be useful in optimizing the layout of kernel virtual
963 memory.
964
965 Say N here unless you know what you are doing.
966
967config LOWMEM_SIZE
968 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
969 default "0x30000000"
970
971config KERNEL_START_BOOL
972 bool "Set custom kernel base address"
973 depends on ADVANCED_OPTIONS
974 help
975 This option allows you to set the kernel virtual address at which
976 the kernel will map low memory (the kernel image will be linked at
977 this address). This can be useful in optimizing the virtual memory
978 layout of the system.
979
980 Say N here unless you know what you are doing.
981
982config KERNEL_START
983 hex "Virtual address of kernel base" if KERNEL_START_BOOL
984 default "0xc0000000"
985
986config TASK_SIZE_BOOL
987 bool "Set custom user task size"
988 depends on ADVANCED_OPTIONS
989 help
990 This option allows you to set the amount of virtual address space
991 allocated to user tasks. This can be useful in optimizing the
992 virtual memory layout of the system.
993
994 Say N here unless you know what you are doing.
995
996config TASK_SIZE
997 hex "Size of user task space" if TASK_SIZE_BOOL
998 default "0x80000000"
999
1000config CONSISTENT_START_BOOL
1001 bool "Set custom consistent memory pool address"
1002 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1003 help
1004 This option allows you to set the base virtual address
1005 of the the consistent memory pool. This pool of virtual
1006 memory is used to make consistent memory allocations.
1007
1008config CONSISTENT_START
1009 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
1010 default "0xff100000" if NOT_COHERENT_CACHE
1011
1012config CONSISTENT_SIZE_BOOL
1013 bool "Set custom consistent memory pool size"
1014 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1015 help
1016 This option allows you to set the size of the the
1017 consistent memory pool. This pool of virtual memory
1018 is used to make consistent memory allocations.
1019
1020config CONSISTENT_SIZE
1021 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1022 default "0x00200000" if NOT_COHERENT_CACHE
1023
1024config BOOT_LOAD_BOOL
1025 bool "Set the boot link/load address"
1026 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
1027 help
1028 This option allows you to set the initial load address of the zImage
1029 or zImage.initrd file. This can be useful if you are on a board
1030 which has a small amount of memory.
1031
1032 Say N here unless you know what you are doing.
1033
1034config BOOT_LOAD
1035 hex "Link/load address for booting" if BOOT_LOAD_BOOL
1036 default "0x00400000" if 40x || 8xx || 8260
1037 default "0x01000000" if 44x
1038 default "0x00800000"
1039
1040config PIN_TLB
1041 bool "Pinned Kernel TLBs (860 ONLY)"
1042 depends on ADVANCED_OPTIONS && 8xx
1043endmenu
1044
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1045if PPC64
1046config KERNEL_START
1047 hex
eeb2d218 1048 default "0xc000000000000000"
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1049endif
1050
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1051source "net/Kconfig"
1052
1053source "drivers/Kconfig"
1054
1055source "fs/Kconfig"
1056
1057# XXX source "arch/ppc/8xx_io/Kconfig"
1058
1059# XXX source "arch/ppc/8260_io/Kconfig"
1060
1061source "arch/powerpc/platforms/iseries/Kconfig"
1062
1063source "lib/Kconfig"
1064
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1065menu "Instrumentation Support"
1066 depends on EXPERIMENTAL
1067
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1068source "arch/powerpc/oprofile/Kconfig"
1069
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1070config KPROBES
1071 bool "Kprobes (EXPERIMENTAL)"
3a872d89 1072 depends on PPC64 && KALLSYMS && EXPERIMENTAL && MODULES
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1073 help
1074 Kprobes allows you to trap at almost any kernel address and
1075 execute a callback function. register_kprobe() establishes
1076 a probepoint and specifies the callback. Kprobes is useful
1077 for kernel debugging, non-intrusive instrumentation and testing.
1078 If in doubt, say "N".
1079endmenu
1080
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1081source "arch/powerpc/Kconfig.debug"
1082
1083source "security/Kconfig"
1084
1085config KEYS_COMPAT
1086 bool
1087 depends on COMPAT && KEYS
1088 default y
1089
1090source "crypto/Kconfig"