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14cf11af PM |
1 | # For a description of the syntax of this configuration file, |
2 | # see Documentation/kbuild/kconfig-language.txt. | |
3 | # | |
4 | ||
5 | mainmenu "Linux/PowerPC Kernel Configuration" | |
6 | ||
7 | config 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 | ||
14 | config PPC32 | |
15 | bool | |
16 | default y if !PPC64 | |
17 | ||
18 | config 64BIT | |
19 | bool | |
20 | default y if PPC64 | |
21 | ||
22 | config PPC_MERGE | |
23 | def_bool y | |
24 | ||
25 | config MMU | |
26 | bool | |
27 | default y | |
28 | ||
14cf11af PM |
29 | config GENERIC_HARDIRQS |
30 | bool | |
31 | default y | |
32 | ||
0d7012a9 IM |
33 | config IRQ_PER_CPU |
34 | bool | |
35 | default y | |
36 | ||
14cf11af PM |
37 | config RWSEM_GENERIC_SPINLOCK |
38 | bool | |
39 | ||
40 | config RWSEM_XCHGADD_ALGORITHM | |
41 | bool | |
42 | default y | |
43 | ||
e779b2f9 AM |
44 | config GENERIC_HWEIGHT |
45 | bool | |
46 | default y | |
47 | ||
14cf11af PM |
48 | config GENERIC_CALIBRATE_DELAY |
49 | bool | |
50 | default y | |
51 | ||
0a9cb46a JM |
52 | config GENERIC_FIND_NEXT_BIT |
53 | bool | |
54 | default y | |
55 | ||
14cf11af PM |
56 | config PPC |
57 | bool | |
58 | default y | |
59 | ||
60 | config EARLY_PRINTK | |
61 | bool | |
51d3082f | 62 | default y |
14cf11af PM |
63 | |
64 | config COMPAT | |
65 | bool | |
66 | default y if PPC64 | |
67 | ||
68 | config SYSVIPC_COMPAT | |
69 | bool | |
70 | depends on COMPAT && SYSVIPC | |
71 | default y | |
72 | ||
73 | # All PPC32s use generic nvram driver through ppc_md | |
74 | config GENERIC_NVRAM | |
75 | bool | |
76 | default y if PPC32 | |
77 | ||
78 | config SCHED_NO_NO_OMIT_FRAME_POINTER | |
79 | bool | |
80 | default y | |
81 | ||
82 | config ARCH_MAY_HAVE_PC_FDC | |
83 | bool | |
84 | default y | |
85 | ||
08264cbc KG |
86 | config PPC_OF |
87 | def_bool y | |
88 | ||
89 | config PPC_UDBG_16550 | |
90 | bool | |
91 | default n | |
92 | ||
08264cbc KG |
93 | config GENERIC_TBSYNC |
94 | bool | |
95 | default y if PPC32 && SMP | |
96 | default n | |
97 | ||
f4fc4a5b KG |
98 | config DEFAULT_UIMAGE |
99 | bool | |
100 | help | |
101 | Used to allow a board to specify it wants a uImage built by default | |
102 | default n | |
103 | ||
14cf11af PM |
104 | menu "Processor support" |
105 | choice | |
106 | prompt "Processor Type" | |
107 | depends on PPC32 | |
108 | default 6xx | |
109 | ||
08264cbc | 110 | config CLASSIC32 |
14cf11af PM |
111 | bool "6xx/7xx/74xx" |
112 | select PPC_FPU | |
08264cbc | 113 | select 6xx |
14cf11af PM |
114 | help |
115 | There are four families of PowerPC chips supported. The more common | |
116 | types (601, 603, 604, 740, 750, 7400), the Motorola embedded | |
117 | versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC | |
118 | embedded versions (403 and 405) and the high end 64 bit Power | |
119 | processors (POWER 3, POWER4, and IBM PPC970 also known as G5). | |
120 | ||
121 | Unless you are building a kernel for one of the embedded processor | |
122 | systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx. | |
123 | Note that the kernel runs in 32-bit mode even on 64-bit chips. | |
124 | ||
125 | config PPC_52xx | |
126 | bool "Freescale 52xx" | |
08264cbc KG |
127 | select 6xx |
128 | select PPC_FPU | |
14cf11af PM |
129 | |
130 | config PPC_82xx | |
131 | bool "Freescale 82xx" | |
08264cbc KG |
132 | select 6xx |
133 | select PPC_FPU | |
14cf11af PM |
134 | |
135 | config PPC_83xx | |
136 | bool "Freescale 83xx" | |
08264cbc KG |
137 | select 6xx |
138 | select FSL_SOC | |
139 | select 83xx | |
140 | select PPC_FPU | |
14cf11af | 141 | |
63dafe57 BB |
142 | config PPC_85xx |
143 | bool "Freescale 85xx" | |
144 | select E500 | |
145 | select FSL_SOC | |
146 | select 85xx | |
147 | ||
c9b484b5 JL |
148 | config PPC_86xx |
149 | bool "Freescale 86xx" | |
150 | select 6xx | |
151 | select FSL_SOC | |
152 | select PPC_FPU | |
153 | select ALTIVEC | |
154 | help | |
155 | The Freescale E600 SoCs have 74xx cores. | |
156 | ||
14cf11af PM |
157 | config 40x |
158 | bool "AMCC 40x" | |
159 | ||
160 | config 44x | |
161 | bool "AMCC 44x" | |
162 | ||
14cf11af PM |
163 | config 8xx |
164 | bool "Freescale 8xx" | |
165 | ||
166 | config E200 | |
167 | bool "Freescale e200" | |
168 | ||
14cf11af PM |
169 | endchoice |
170 | ||
171 | config POWER4_ONLY | |
172 | bool "Optimize for POWER4" | |
187a0067 | 173 | depends on PPC64 |
14cf11af PM |
174 | default n |
175 | ---help--- | |
176 | Cause the compiler to optimize for POWER4/POWER5/PPC970 processors. | |
177 | The resulting binary will not work on POWER3 or RS64 processors | |
178 | when compiled with binutils 2.15 or later. | |
179 | ||
180 | config POWER3 | |
181 | bool | |
187a0067 | 182 | depends on PPC64 |
14cf11af PM |
183 | default y if !POWER4_ONLY |
184 | ||
185 | config POWER4 | |
187a0067 | 186 | depends on PPC64 |
14cf11af PM |
187 | def_bool y |
188 | ||
08264cbc KG |
189 | config 6xx |
190 | bool | |
191 | ||
192 | # this is temp to handle compat with arch=ppc | |
193 | config 83xx | |
194 | bool | |
195 | ||
63dafe57 BB |
196 | # this is temp to handle compat with arch=ppc |
197 | config 85xx | |
198 | bool | |
199 | ||
200 | config E500 | |
201 | bool | |
202 | ||
14cf11af | 203 | config PPC_FPU |
187a0067 PM |
204 | bool |
205 | default y if PPC64 | |
14cf11af PM |
206 | |
207 | config BOOKE | |
208 | bool | |
209 | depends on E200 || E500 | |
210 | default y | |
211 | ||
212 | config FSL_BOOKE | |
213 | bool | |
214 | depends on E200 || E500 | |
215 | default y | |
216 | ||
217 | config PTE_64BIT | |
218 | bool | |
219 | depends on 44x || E500 | |
220 | default y if 44x | |
221 | default y if E500 && PHYS_64BIT | |
222 | ||
223 | config PHYS_64BIT | |
224 | bool 'Large physical address support' if E500 | |
225 | depends on 44x || E500 | |
226 | default y if 44x | |
227 | ---help--- | |
228 | This option enables kernel support for larger than 32-bit physical | |
229 | addresses. This features is not be available on all e500 cores. | |
230 | ||
231 | If in doubt, say N here. | |
232 | ||
233 | config ALTIVEC | |
234 | bool "AltiVec Support" | |
08264cbc | 235 | depends on CLASSIC32 || POWER4 |
14cf11af PM |
236 | ---help--- |
237 | This option enables kernel support for the Altivec extensions to the | |
238 | PowerPC processor. The kernel currently supports saving and restoring | |
239 | altivec registers, and turning on the 'altivec enable' bit so user | |
240 | processes can execute altivec instructions. | |
241 | ||
242 | This option is only usefully if you have a processor that supports | |
243 | altivec (G4, otherwise known as 74xx series), but does not have | |
244 | any affect on a non-altivec cpu (it does, however add code to the | |
245 | kernel). | |
246 | ||
247 | If in doubt, say Y here. | |
248 | ||
249 | config SPE | |
250 | bool "SPE Support" | |
251 | depends on E200 || E500 | |
63dafe57 | 252 | default y |
14cf11af PM |
253 | ---help--- |
254 | This option enables kernel support for the Signal Processing | |
255 | Extensions (SPE) to the PowerPC processor. The kernel currently | |
256 | supports saving and restoring SPE registers, and turning on the | |
257 | 'spe enable' bit so user processes can execute SPE instructions. | |
258 | ||
259 | This option is only useful if you have a processor that supports | |
260 | SPE (e500, otherwise known as 85xx series), but does not have any | |
261 | effect on a non-spe cpu (it does, however add code to the kernel). | |
262 | ||
263 | If in doubt, say Y here. | |
264 | ||
265 | config PPC_STD_MMU | |
266 | bool | |
267 | depends on 6xx || POWER3 || POWER4 || PPC64 | |
268 | default y | |
269 | ||
270 | config PPC_STD_MMU_32 | |
271 | def_bool y | |
272 | depends on PPC_STD_MMU && PPC32 | |
273 | ||
c6622f63 PM |
274 | config VIRT_CPU_ACCOUNTING |
275 | bool "Deterministic task and CPU time accounting" | |
276 | depends on PPC64 | |
277 | default y | |
278 | help | |
279 | Select this option to enable more accurate task and CPU time | |
280 | accounting. This is done by reading a CPU counter on each | |
281 | kernel entry and exit and on transitions within the kernel | |
282 | between system, softirq and hardirq state, so there is a | |
283 | small performance impact. This also enables accounting of | |
284 | stolen time on logically-partitioned systems running on | |
285 | IBM POWER5-based machines. | |
286 | ||
287 | If in doubt, say Y here. | |
288 | ||
14cf11af PM |
289 | config SMP |
290 | depends on PPC_STD_MMU | |
291 | bool "Symmetric multi-processing support" | |
292 | ---help--- | |
293 | This enables support for systems with more than one CPU. If you have | |
294 | a system with only one CPU, say N. If you have a system with more | |
295 | than one CPU, say Y. Note that the kernel does not currently | |
296 | support SMP machines with 603/603e/603ev or PPC750 ("G3") processors | |
297 | since they have inadequate hardware support for multiprocessor | |
298 | operation. | |
299 | ||
300 | If you say N here, the kernel will run on single and multiprocessor | |
301 | machines, but will use only one CPU of a multiprocessor machine. If | |
302 | you say Y here, the kernel will run on single-processor machines. | |
303 | On a single-processor machine, the kernel will run faster if you say | |
304 | N here. | |
305 | ||
306 | If you don't know what to do here, say N. | |
307 | ||
308 | config NR_CPUS | |
e8a167ac | 309 | int "Maximum number of CPUs (2-128)" |
14cf11af PM |
310 | range 2 128 |
311 | depends on SMP | |
312 | default "32" if PPC64 | |
313 | default "4" | |
314 | ||
315 | config NOT_COHERENT_CACHE | |
316 | bool | |
317 | depends on 4xx || 8xx || E200 | |
318 | default y | |
319 | endmenu | |
320 | ||
321 | source "init/Kconfig" | |
322 | ||
323 | menu "Platform support" | |
08264cbc | 324 | depends on PPC64 || CLASSIC32 |
14cf11af PM |
325 | |
326 | choice | |
327 | prompt "Machine type" | |
328 | default PPC_MULTIPLATFORM | |
329 | ||
330 | config PPC_MULTIPLATFORM | |
331 | bool "Generic desktop/server/laptop" | |
332 | help | |
333 | Select this option if configuring for an IBM pSeries or | |
334 | RS/6000 machine, an Apple machine, or a PReP, CHRP, | |
335 | Maple or Cell-based machine. | |
336 | ||
337 | config PPC_ISERIES | |
338 | bool "IBM Legacy iSeries" | |
339 | depends on PPC64 | |
340 | ||
341 | config EMBEDDED6xx | |
342 | bool "Embedded 6xx/7xx/7xxx-based board" | |
c5d56332 | 343 | depends on PPC32 && (BROKEN||BROKEN_ON_SMP) |
14cf11af PM |
344 | |
345 | config APUS | |
346 | bool "Amiga-APUS" | |
347 | depends on PPC32 && BROKEN | |
348 | help | |
349 | Select APUS if configuring for a PowerUP Amiga. | |
350 | More information is available at: | |
351 | <http://linux-apus.sourceforge.net/>. | |
352 | endchoice | |
353 | ||
354 | config PPC_PSERIES | |
355 | depends on PPC_MULTIPLATFORM && PPC64 | |
4a3ecc62 | 356 | bool "IBM pSeries & new (POWER5-based) iSeries" |
7233593b | 357 | select MPIC |
f9bd170a | 358 | select PPC_I8259 |
033ef338 PM |
359 | select PPC_RTAS |
360 | select RTAS_ERROR_LOGGING | |
13b8a272 | 361 | select PPC_UDBG_16550 |
14cf11af PM |
362 | default y |
363 | ||
364 | config PPC_CHRP | |
4a3ecc62 | 365 | bool "Common Hardware Reference Platform (CHRP) based machines" |
14cf11af | 366 | depends on PPC_MULTIPLATFORM && PPC32 |
7233593b | 367 | select MPIC |
f9bd170a | 368 | select PPC_I8259 |
25635c71 | 369 | select PPC_INDIRECT_PCI |
033ef338 | 370 | select PPC_RTAS |
830825d6 | 371 | select PPC_MPC106 |
13b8a272 | 372 | select PPC_UDBG_16550 |
14cf11af PM |
373 | default y |
374 | ||
375 | config PPC_PMAC | |
4a3ecc62 | 376 | bool "Apple PowerMac based machines" |
14cf11af | 377 | depends on PPC_MULTIPLATFORM |
7233593b | 378 | select MPIC |
25635c71 | 379 | select PPC_INDIRECT_PCI if PPC32 |
b6a4ce52 | 380 | select PPC_MPC106 if PPC32 |
14cf11af PM |
381 | default y |
382 | ||
383 | config PPC_PMAC64 | |
384 | bool | |
385 | depends on PPC_PMAC && POWER4 | |
7233593b | 386 | select MPIC |
35499c01 | 387 | select U3_DART |
1beb6a7d | 388 | select MPIC_BROKEN_U3 |
8ad200d7 | 389 | select GENERIC_TBSYNC |
f39224a8 | 390 | select PPC_970_NAP |
14cf11af PM |
391 | default y |
392 | ||
393 | config PPC_PREP | |
4a3ecc62 | 394 | bool "PowerPC Reference Platform (PReP) based machines" |
5be396b0 | 395 | depends on PPC_MULTIPLATFORM && PPC32 && BROKEN |
7233593b | 396 | select MPIC |
f9bd170a | 397 | select PPC_I8259 |
25635c71 | 398 | select PPC_INDIRECT_PCI |
13b8a272 | 399 | select PPC_UDBG_16550 |
14cf11af PM |
400 | default y |
401 | ||
402 | config PPC_MAPLE | |
403 | depends on PPC_MULTIPLATFORM && PPC64 | |
4a3ecc62 | 404 | bool "Maple 970FX Evaluation Board" |
7233593b | 405 | select MPIC |
14cf11af PM |
406 | select U3_DART |
407 | select MPIC_BROKEN_U3 | |
8ad200d7 | 408 | select GENERIC_TBSYNC |
13b8a272 | 409 | select PPC_UDBG_16550 |
f39224a8 | 410 | select PPC_970_NAP |
14cf11af PM |
411 | default n |
412 | help | |
413 | This option enables support for the Maple 970FX Evaluation Board. | |
414 | For more informations, refer to <http://www.970eval.com> | |
415 | ||
f3f66f59 | 416 | config PPC_CELL |
c01ea72a GL |
417 | bool |
418 | default n | |
419 | ||
420 | config PPC_CELL_NATIVE | |
421 | bool | |
422 | select PPC_CELL | |
423 | default n | |
424 | ||
425 | config PPC_IBM_CELL_BLADE | |
f127a2b5 | 426 | bool "IBM Cell Blade" |
14cf11af | 427 | depends on PPC_MULTIPLATFORM && PPC64 |
c01ea72a | 428 | select PPC_CELL_NATIVE |
033ef338 | 429 | select PPC_RTAS |
edf03c1e | 430 | select MMIO_NVRAM |
13b8a272 | 431 | select PPC_UDBG_16550 |
94b60ec1 | 432 | select UDBG_RTAS_CONSOLE |
14cf11af | 433 | |
cc46bb98 ME |
434 | config UDBG_RTAS_CONSOLE |
435 | bool | |
436 | default n | |
14cf11af | 437 | |
14cf11af PM |
438 | config XICS |
439 | depends on PPC_PSERIES | |
440 | bool | |
441 | default y | |
442 | ||
443 | config U3_DART | |
444 | bool | |
445 | depends on PPC_MULTIPLATFORM && PPC64 | |
446 | default n | |
447 | ||
033ef338 PM |
448 | config PPC_RTAS |
449 | bool | |
450 | default n | |
451 | ||
452 | config RTAS_ERROR_LOGGING | |
453 | bool | |
454 | depends on PPC_RTAS | |
455 | default n | |
456 | ||
f4fcbbe9 PM |
457 | config RTAS_PROC |
458 | bool "Proc interface to RTAS" | |
e9add2ee | 459 | depends on PPC_RTAS |
f4fcbbe9 PM |
460 | default y |
461 | ||
462 | config RTAS_FLASH | |
463 | tristate "Firmware flash interface" | |
464 | depends on PPC64 && RTAS_PROC | |
e9add2ee | 465 | |
edf03c1e AB |
466 | config MMIO_NVRAM |
467 | bool | |
468 | default n | |
469 | ||
14cf11af PM |
470 | config MPIC_BROKEN_U3 |
471 | bool | |
472 | depends on PPC_MAPLE | |
473 | default y | |
474 | ||
14cf11af PM |
475 | config IBMVIO |
476 | depends on PPC_PSERIES || PPC_ISERIES | |
477 | bool | |
478 | default y | |
479 | ||
d7a30103 HS |
480 | config IBMEBUS |
481 | depends on PPC_PSERIES | |
482 | bool "Support for GX bus based adapters" | |
d7a30103 HS |
483 | help |
484 | Bus device driver for GX bus based adapters. | |
485 | ||
830825d6 PM |
486 | config PPC_MPC106 |
487 | bool | |
488 | default n | |
489 | ||
f39224a8 PM |
490 | config PPC_970_NAP |
491 | bool | |
492 | default n | |
493 | ||
14cf11af PM |
494 | source "drivers/cpufreq/Kconfig" |
495 | ||
496 | config CPU_FREQ_PMAC | |
497 | bool "Support for Apple PowerBooks" | |
498 | depends on CPU_FREQ && ADB_PMU && PPC32 | |
499 | select CPU_FREQ_TABLE | |
500 | help | |
501 | This adds support for frequency switching on Apple PowerBooks, | |
502 | this currently includes some models of iBook & Titanium | |
503 | PowerBook. | |
504 | ||
4350147a BH |
505 | config CPU_FREQ_PMAC64 |
506 | bool "Support for some Apple G5s" | |
e272a285 | 507 | depends on CPU_FREQ && PPC64 |
4350147a BH |
508 | select CPU_FREQ_TABLE |
509 | help | |
510 | This adds support for frequency switching on Apple iMac G5, | |
511 | and some of the more recent desktop G5 machines as well. | |
512 | ||
14cf11af PM |
513 | config PPC601_SYNC_FIX |
514 | bool "Workarounds for PPC601 bugs" | |
515 | depends on 6xx && (PPC_PREP || PPC_PMAC) | |
516 | help | |
517 | Some versions of the PPC601 (the first PowerPC chip) have bugs which | |
518 | mean that extra synchronization instructions are required near | |
519 | certain instructions, typically those that make major changes to the | |
520 | CPU state. These extra instructions reduce performance slightly. | |
521 | If you say N here, these extra instructions will not be included, | |
522 | resulting in a kernel which will run faster but may not run at all | |
523 | on some systems with the PPC601 chip. | |
524 | ||
525 | If in doubt, say Y here. | |
526 | ||
527 | config TAU | |
9b781727 | 528 | bool "On-chip CPU temperature sensor support" |
14cf11af PM |
529 | depends on 6xx |
530 | help | |
531 | G3 and G4 processors have an on-chip temperature sensor called the | |
532 | 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die | |
533 | temperature within 2-4 degrees Celsius. This option shows the current | |
534 | on-die temperature in /proc/cpuinfo if the cpu supports it. | |
535 | ||
536 | Unfortunately, on some chip revisions, this sensor is very inaccurate | |
9b781727 | 537 | and in many cases, does not work at all, so don't assume the cpu |
14cf11af PM |
538 | temp is actually what /proc/cpuinfo says it is. |
539 | ||
540 | config TAU_INT | |
541 | bool "Interrupt driven TAU driver (DANGEROUS)" | |
542 | depends on TAU | |
543 | ---help--- | |
544 | The TAU supports an interrupt driven mode which causes an interrupt | |
545 | whenever the temperature goes out of range. This is the fastest way | |
546 | to get notified the temp has exceeded a range. With this option off, | |
547 | a timer is used to re-check the temperature periodically. | |
548 | ||
549 | However, on some cpus it appears that the TAU interrupt hardware | |
550 | is buggy and can cause a situation which would lead unexplained hard | |
551 | lockups. | |
552 | ||
553 | Unless you are extending the TAU driver, or enjoy kernel/hardware | |
554 | debugging, leave this option off. | |
555 | ||
556 | config TAU_AVERAGE | |
557 | bool "Average high and low temp" | |
558 | depends on TAU | |
559 | ---help--- | |
560 | The TAU hardware can compare the temperature to an upper and lower | |
561 | bound. The default behavior is to show both the upper and lower | |
562 | bound in /proc/cpuinfo. If the range is large, the temperature is | |
563 | either changing a lot, or the TAU hardware is broken (likely on some | |
564 | G4's). If the range is small (around 4 degrees), the temperature is | |
565 | relatively stable. If you say Y here, a single temperature value, | |
566 | halfway between the upper and lower bounds, will be reported in | |
567 | /proc/cpuinfo. | |
568 | ||
569 | If in doubt, say N here. | |
c2201536 MG |
570 | |
571 | config PPC_TODC | |
572 | depends on EMBEDDED6xx | |
573 | bool "Generic Time-of-day Clock (TODC) support" | |
574 | ---help--- | |
575 | This adds support for many TODC/RTC chips. | |
576 | ||
14cf11af PM |
577 | endmenu |
578 | ||
579 | source arch/powerpc/platforms/embedded6xx/Kconfig | |
580 | source arch/powerpc/platforms/4xx/Kconfig | |
08264cbc | 581 | source arch/powerpc/platforms/83xx/Kconfig |
14cf11af | 582 | source arch/powerpc/platforms/85xx/Kconfig |
c9b484b5 | 583 | source arch/powerpc/platforms/86xx/Kconfig |
14cf11af | 584 | source arch/powerpc/platforms/8xx/Kconfig |
67207b96 | 585 | source arch/powerpc/platforms/cell/Kconfig |
14cf11af PM |
586 | |
587 | menu "Kernel options" | |
588 | ||
589 | config HIGHMEM | |
590 | bool "High memory support" | |
591 | depends on PPC32 | |
592 | ||
593 | source kernel/Kconfig.hz | |
594 | source kernel/Kconfig.preempt | |
595 | source "fs/Kconfig.binfmt" | |
596 | ||
597 | # We optimistically allocate largepages from the VM, so make the limit | |
598 | # large enough (16MB). This badly named config option is actually | |
599 | # max order + 1 | |
600 | config FORCE_MAX_ZONEORDER | |
601 | int | |
602 | depends on PPC64 | |
02864867 | 603 | default "9" if PPC_64K_PAGES |
14cf11af PM |
604 | default "13" |
605 | ||
606 | config MATH_EMULATION | |
607 | bool "Math emulation" | |
608 | depends on 4xx || 8xx || E200 || E500 | |
609 | ---help--- | |
610 | Some PowerPC chips designed for embedded applications do not have | |
611 | a floating-point unit and therefore do not implement the | |
612 | floating-point instructions in the PowerPC instruction set. If you | |
613 | say Y here, the kernel will include code to emulate a floating-point | |
614 | unit, which will allow programs that use floating-point | |
615 | instructions to run. | |
616 | ||
617 | config IOMMU_VMERGE | |
618 | bool "Enable IOMMU virtual merging (EXPERIMENTAL)" | |
619 | depends on EXPERIMENTAL && PPC64 | |
620 | default n | |
621 | help | |
622 | Cause IO segments sent to a device for DMA to be merged virtually | |
623 | by the IOMMU when they happen to have been allocated contiguously. | |
624 | This doesn't add pressure to the IOMMU allocator. However, some | |
625 | drivers don't support getting large merged segments coming back | |
626 | from *_map_sg(). Say Y if you know the drivers you are using are | |
627 | properly handling this case. | |
628 | ||
629 | config HOTPLUG_CPU | |
630 | bool "Support for enabling/disabling CPUs" | |
631 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) | |
632 | ---help--- | |
633 | Say Y here to be able to disable and re-enable individual | |
634 | CPUs at runtime on SMP machines. | |
635 | ||
636 | Say N if you are unsure. | |
637 | ||
cc57637b YG |
638 | config ARCH_ENABLE_MEMORY_HOTPLUG |
639 | def_bool y | |
640 | ||
14cf11af PM |
641 | config KEXEC |
642 | bool "kexec system call (EXPERIMENTAL)" | |
643 | depends on PPC_MULTIPLATFORM && EXPERIMENTAL | |
644 | help | |
645 | kexec is a system call that implements the ability to shutdown your | |
646 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 647 | but it is independent of the system firmware. And like a reboot |
14cf11af PM |
648 | you can start any kernel with it, not just Linux. |
649 | ||
1f1332f7 | 650 | The name comes from the similarity to the exec system call. |
14cf11af PM |
651 | |
652 | It is an ongoing process to be certain the hardware in a machine | |
653 | is properly shutdown, so do not be surprised if this code does not | |
654 | initially work for you. It may help to enable device hotplugging | |
655 | support. As of this writing the exact hardware interface is | |
656 | strongly in flux, so no good recommendation can be made. | |
657 | ||
e8625d46 | 658 | config CRASH_DUMP |
cd9c99d7 | 659 | bool "Build a kdump crash kernel (EXPERIMENTAL)" |
e8625d46 HM |
660 | depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL |
661 | help | |
662 | Build a kernel suitable for use as a kdump capture kernel. | |
663 | The kernel will be linked at a different address than normal, and | |
664 | so can only be used for Kdump. | |
665 | ||
666 | Don't change this unless you know what you are doing. | |
667 | ||
14cf11af PM |
668 | config EMBEDDEDBOOT |
669 | bool | |
670 | depends on 8xx || 8260 | |
671 | default y | |
672 | ||
673 | config PC_KEYBOARD | |
674 | bool "PC PS/2 style Keyboard" | |
675 | depends on 4xx || CPM2 | |
676 | ||
677 | config PPCBUG_NVRAM | |
678 | bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC | |
679 | default y if PPC_PREP | |
680 | ||
681 | config IRQ_ALL_CPUS | |
682 | bool "Distribute interrupts on all CPUs by default" | |
683 | depends on SMP && !MV64360 | |
684 | help | |
685 | This option gives the kernel permission to distribute IRQs across | |
686 | multiple CPUs. Saying N here will route all IRQs to the first | |
687 | CPU. Generally saying Y is safe, although some problems have been | |
688 | reported with SMP Power Macintoshes with this option enabled. | |
689 | ||
690 | source "arch/powerpc/platforms/pseries/Kconfig" | |
691 | ||
ffa27b6b AW |
692 | config NUMA |
693 | bool "NUMA support" | |
694 | depends on PPC64 | |
695 | default y if SMP && PPC_PSERIES | |
696 | ||
c80d79d7 YG |
697 | config NODES_SHIFT |
698 | int | |
699 | default "4" | |
700 | depends on NEED_MULTIPLE_NODES | |
701 | ||
14cf11af PM |
702 | config ARCH_SELECT_MEMORY_MODEL |
703 | def_bool y | |
704 | depends on PPC64 | |
705 | ||
706 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
707 | def_bool y |
708 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 709 | |
45fb6cea | 710 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 711 | def_bool y |
9100b205 | 712 | depends on PPC64 |
14cf11af | 713 | |
45fb6cea | 714 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 715 | def_bool y |
45fb6cea | 716 | depends on SMP && PPC_PSERIES |
14cf11af PM |
717 | |
718 | source "mm/Kconfig" | |
719 | ||
720 | config HAVE_ARCH_EARLY_PFN_TO_NID | |
721 | def_bool y | |
722 | depends on NEED_MULTIPLE_NODES | |
723 | ||
7e9191da MK |
724 | config ARCH_MEMORY_PROBE |
725 | def_bool y | |
726 | depends on MEMORY_HOTPLUG | |
727 | ||
3c726f8d BH |
728 | config PPC_64K_PAGES |
729 | bool "64k page size" | |
863c84b9 | 730 | depends on PPC64 |
3c726f8d BH |
731 | help |
732 | This option changes the kernel logical page size to 64k. On machines | |
733 | without processor support for 64k pages, the kernel will simulate | |
734 | them by loading each individual 4k page on demand transparently, | |
735 | while on hardware with such support, it will be used to map | |
736 | normal application pages. | |
737 | ||
14cf11af PM |
738 | config SCHED_SMT |
739 | bool "SMT (Hyperthreading) scheduler support" | |
740 | depends on PPC64 && SMP | |
14cf11af PM |
741 | help |
742 | SMT scheduler support improves the CPU scheduler's decision making | |
743 | when dealing with POWER5 cpus at a cost of slightly increased | |
744 | overhead in some places. If unsure say N here. | |
745 | ||
746 | config PROC_DEVICETREE | |
5f296755 PM |
747 | bool "Support for device tree in /proc" |
748 | depends on PROC_FS | |
14cf11af PM |
749 | help |
750 | This option adds a device-tree directory under /proc which contains | |
751 | an image of the device tree that the kernel copies from Open | |
5f296755 | 752 | Firmware or other boot firmware. If unsure, say Y here. |
14cf11af PM |
753 | |
754 | source "arch/powerpc/platforms/prep/Kconfig" | |
755 | ||
756 | config CMDLINE_BOOL | |
757 | bool "Default bootloader kernel arguments" | |
758 | depends on !PPC_ISERIES | |
759 | ||
760 | config CMDLINE | |
761 | string "Initial kernel command string" | |
762 | depends on CMDLINE_BOOL | |
763 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
764 | help | |
765 | On some platforms, there is currently no way for the boot loader to | |
766 | pass arguments to the kernel. For these platforms, you can supply | |
767 | some command-line options at build time by entering them here. In | |
768 | most cases you will need to specify the root device here. | |
769 | ||
770 | if !44x || BROKEN | |
771 | source kernel/power/Kconfig | |
772 | endif | |
773 | ||
774 | config SECCOMP | |
775 | bool "Enable seccomp to safely compute untrusted bytecode" | |
776 | depends on PROC_FS | |
777 | default y | |
778 | help | |
779 | This kernel feature is useful for number crunching applications | |
780 | that may need to compute untrusted bytecode during their | |
781 | execution. By using pipes or other transports made available to | |
782 | the process as file descriptors supporting the read/write | |
783 | syscalls, it's possible to isolate those applications in | |
784 | their own address space using seccomp. Once seccomp is | |
785 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
786 | and the task is only allowed to execute a few safe syscalls | |
787 | defined by each seccomp mode. | |
788 | ||
789 | If unsure, say Y. Only embedded should say N here. | |
790 | ||
791 | endmenu | |
792 | ||
793 | config ISA_DMA_API | |
794 | bool | |
795 | default y | |
796 | ||
797 | menu "Bus options" | |
798 | ||
799 | config ISA | |
800 | bool "Support for ISA-bus hardware" | |
801 | depends on PPC_PREP || PPC_CHRP | |
f9bd170a | 802 | select PPC_I8259 |
14cf11af PM |
803 | help |
804 | Find out whether you have ISA slots on your motherboard. ISA is the | |
805 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
806 | inside your box. If you have an Apple machine, say N here; if you | |
807 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If | |
808 | you have an embedded board, consult your board documentation. | |
809 | ||
810 | config GENERIC_ISA_DMA | |
811 | bool | |
812 | depends on PPC64 || POWER4 || 6xx && !CPM2 | |
813 | default y | |
814 | ||
7233593b ZR |
815 | config MPIC |
816 | bool | |
817 | default n | |
818 | ||
819 | config MPIC_WEIRD | |
820 | bool | |
821 | default n | |
822 | ||
f9bd170a PM |
823 | config PPC_I8259 |
824 | bool | |
f9bd170a PM |
825 | default n |
826 | ||
25635c71 PM |
827 | config PPC_INDIRECT_PCI |
828 | bool | |
829 | depends on PCI | |
63dafe57 | 830 | default y if 40x || 44x |
25635c71 PM |
831 | default n |
832 | ||
14cf11af PM |
833 | config EISA |
834 | bool | |
835 | ||
836 | config SBUS | |
837 | bool | |
838 | ||
08264cbc KG |
839 | config FSL_SOC |
840 | bool | |
841 | ||
14cf11af PM |
842 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
843 | config MCA | |
844 | bool | |
845 | ||
846 | config PCI | |
53158620 JL |
847 | bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \ |
848 | || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES) || MPC7448HPC2 | |
849 | default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx \ | |
850 | && !PPC_85xx && !PPC_86xx | |
14cf11af PM |
851 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS |
852 | default PCI_QSPAN if !4xx && !CPM2 && 8xx | |
853 | help | |
854 | Find out whether your system includes a PCI bus. PCI is the name of | |
855 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
856 | your box. If you say Y here, the kernel will include drivers and | |
857 | infrastructure code to support PCI bus devices. | |
858 | ||
859 | config PCI_DOMAINS | |
860 | bool | |
861 | default PCI | |
862 | ||
14cf11af PM |
863 | config PCI_QSPAN |
864 | bool "QSpan PCI" | |
865 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 866 | select PPC_I8259 |
14cf11af PM |
867 | help |
868 | Say Y here if you have a system based on a Motorola 8xx-series | |
869 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
870 | ||
871 | config PCI_8260 | |
872 | bool | |
873 | depends on PCI && 8260 | |
25635c71 | 874 | select PPC_INDIRECT_PCI |
14cf11af PM |
875 | default y |
876 | ||
877 | config 8260_PCI9 | |
4a3ecc62 | 878 | bool "Enable workaround for MPC826x erratum PCI 9" |
14cf11af PM |
879 | depends on PCI_8260 && !ADS8272 |
880 | default y | |
881 | ||
882 | choice | |
4a3ecc62 | 883 | prompt "IDMA channel for PCI 9 workaround" |
14cf11af PM |
884 | depends on 8260_PCI9 |
885 | ||
886 | config 8260_PCI9_IDMA1 | |
887 | bool "IDMA1" | |
888 | ||
889 | config 8260_PCI9_IDMA2 | |
890 | bool "IDMA2" | |
891 | ||
892 | config 8260_PCI9_IDMA3 | |
893 | bool "IDMA3" | |
894 | ||
895 | config 8260_PCI9_IDMA4 | |
896 | bool "IDMA4" | |
897 | ||
898 | endchoice | |
899 | ||
bb53bb3d JM |
900 | source "drivers/pci/pcie/Kconfig" |
901 | ||
14cf11af PM |
902 | source "drivers/pci/Kconfig" |
903 | ||
904 | source "drivers/pcmcia/Kconfig" | |
905 | ||
906 | source "drivers/pci/hotplug/Kconfig" | |
907 | ||
908 | endmenu | |
909 | ||
910 | menu "Advanced setup" | |
911 | depends on PPC32 | |
912 | ||
913 | config ADVANCED_OPTIONS | |
914 | bool "Prompt for advanced kernel configuration options" | |
915 | help | |
916 | This option will enable prompting for a variety of advanced kernel | |
917 | configuration options. These options can cause the kernel to not | |
918 | work if they are set incorrectly, but can be used to optimize certain | |
919 | aspects of kernel memory management. | |
920 | ||
921 | Unless you know what you are doing, say N here. | |
922 | ||
923 | comment "Default settings for advanced configuration options are used" | |
924 | depends on !ADVANCED_OPTIONS | |
925 | ||
926 | config HIGHMEM_START_BOOL | |
927 | bool "Set high memory pool address" | |
928 | depends on ADVANCED_OPTIONS && HIGHMEM | |
929 | help | |
930 | This option allows you to set the base address of the kernel virtual | |
931 | area used to map high memory pages. This can be useful in | |
932 | optimizing the layout of kernel virtual memory. | |
933 | ||
934 | Say N here unless you know what you are doing. | |
935 | ||
936 | config HIGHMEM_START | |
937 | hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL | |
938 | default "0xfe000000" | |
939 | ||
940 | config LOWMEM_SIZE_BOOL | |
941 | bool "Set maximum low memory" | |
942 | depends on ADVANCED_OPTIONS | |
943 | help | |
944 | This option allows you to set the maximum amount of memory which | |
945 | will be used as "low memory", that is, memory which the kernel can | |
946 | access directly, without having to set up a kernel virtual mapping. | |
947 | This can be useful in optimizing the layout of kernel virtual | |
948 | memory. | |
949 | ||
950 | Say N here unless you know what you are doing. | |
951 | ||
952 | config LOWMEM_SIZE | |
953 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
954 | default "0x30000000" | |
955 | ||
956 | config KERNEL_START_BOOL | |
957 | bool "Set custom kernel base address" | |
958 | depends on ADVANCED_OPTIONS | |
959 | help | |
960 | This option allows you to set the kernel virtual address at which | |
961 | the kernel will map low memory (the kernel image will be linked at | |
962 | this address). This can be useful in optimizing the virtual memory | |
963 | layout of the system. | |
964 | ||
965 | Say N here unless you know what you are doing. | |
966 | ||
967 | config KERNEL_START | |
968 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
969 | default "0xc0000000" | |
970 | ||
971 | config TASK_SIZE_BOOL | |
972 | bool "Set custom user task size" | |
973 | depends on ADVANCED_OPTIONS | |
974 | help | |
975 | This option allows you to set the amount of virtual address space | |
976 | allocated to user tasks. This can be useful in optimizing the | |
977 | virtual memory layout of the system. | |
978 | ||
979 | Say N here unless you know what you are doing. | |
980 | ||
981 | config TASK_SIZE | |
982 | hex "Size of user task space" if TASK_SIZE_BOOL | |
983 | default "0x80000000" | |
984 | ||
985 | config CONSISTENT_START_BOOL | |
986 | bool "Set custom consistent memory pool address" | |
987 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
988 | help | |
989 | This option allows you to set the base virtual address | |
990 | of the the consistent memory pool. This pool of virtual | |
991 | memory is used to make consistent memory allocations. | |
992 | ||
993 | config CONSISTENT_START | |
994 | hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL | |
995 | default "0xff100000" if NOT_COHERENT_CACHE | |
996 | ||
997 | config CONSISTENT_SIZE_BOOL | |
998 | bool "Set custom consistent memory pool size" | |
999 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
1000 | help | |
1001 | This option allows you to set the size of the the | |
1002 | consistent memory pool. This pool of virtual memory | |
1003 | is used to make consistent memory allocations. | |
1004 | ||
1005 | config CONSISTENT_SIZE | |
1006 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
1007 | default "0x00200000" if NOT_COHERENT_CACHE | |
1008 | ||
1009 | config BOOT_LOAD_BOOL | |
1010 | bool "Set the boot link/load address" | |
1011 | depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM | |
1012 | help | |
1013 | This option allows you to set the initial load address of the zImage | |
1014 | or zImage.initrd file. This can be useful if you are on a board | |
1015 | which has a small amount of memory. | |
1016 | ||
1017 | Say N here unless you know what you are doing. | |
1018 | ||
1019 | config BOOT_LOAD | |
1020 | hex "Link/load address for booting" if BOOT_LOAD_BOOL | |
1021 | default "0x00400000" if 40x || 8xx || 8260 | |
1022 | default "0x01000000" if 44x | |
1023 | default "0x00800000" | |
1024 | ||
1025 | config PIN_TLB | |
1026 | bool "Pinned Kernel TLBs (860 ONLY)" | |
1027 | depends on ADVANCED_OPTIONS && 8xx | |
1028 | endmenu | |
1029 | ||
cabb5587 SR |
1030 | if PPC64 |
1031 | config KERNEL_START | |
1032 | hex | |
eeb2d218 | 1033 | default "0xc000000000000000" |
cabb5587 SR |
1034 | endif |
1035 | ||
14cf11af PM |
1036 | source "net/Kconfig" |
1037 | ||
1038 | source "drivers/Kconfig" | |
1039 | ||
1040 | source "fs/Kconfig" | |
1041 | ||
1042 | # XXX source "arch/ppc/8xx_io/Kconfig" | |
1043 | ||
1044 | # XXX source "arch/ppc/8260_io/Kconfig" | |
1045 | ||
1046 | source "arch/powerpc/platforms/iseries/Kconfig" | |
1047 | ||
1048 | source "lib/Kconfig" | |
1049 | ||
cd6b0762 PP |
1050 | menu "Instrumentation Support" |
1051 | depends on EXPERIMENTAL | |
1052 | ||
14cf11af PM |
1053 | source "arch/powerpc/oprofile/Kconfig" |
1054 | ||
cd6b0762 PP |
1055 | config KPROBES |
1056 | bool "Kprobes (EXPERIMENTAL)" | |
add2b6fd | 1057 | depends on PPC64 && EXPERIMENTAL && MODULES |
cd6b0762 PP |
1058 | help |
1059 | Kprobes allows you to trap at almost any kernel address and | |
1060 | execute a callback function. register_kprobe() establishes | |
1061 | a probepoint and specifies the callback. Kprobes is useful | |
1062 | for kernel debugging, non-intrusive instrumentation and testing. | |
1063 | If in doubt, say "N". | |
1064 | endmenu | |
1065 | ||
14cf11af PM |
1066 | source "arch/powerpc/Kconfig.debug" |
1067 | ||
1068 | source "security/Kconfig" | |
1069 | ||
1070 | config KEYS_COMPAT | |
1071 | bool | |
1072 | depends on COMPAT && KEYS | |
1073 | default y | |
1074 | ||
1075 | source "crypto/Kconfig" |