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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 | ||
33 | config RWSEM_GENERIC_SPINLOCK | |
34 | bool | |
35 | ||
36 | config RWSEM_XCHGADD_ALGORITHM | |
37 | bool | |
38 | default y | |
39 | ||
e779b2f9 AM |
40 | config GENERIC_HWEIGHT |
41 | bool | |
42 | default y | |
43 | ||
14cf11af PM |
44 | config GENERIC_CALIBRATE_DELAY |
45 | bool | |
46 | default y | |
47 | ||
0a9cb46a JM |
48 | config GENERIC_FIND_NEXT_BIT |
49 | bool | |
50 | default y | |
51 | ||
14cf11af PM |
52 | config PPC |
53 | bool | |
54 | default y | |
55 | ||
56 | config EARLY_PRINTK | |
57 | bool | |
51d3082f | 58 | default y |
14cf11af PM |
59 | |
60 | config COMPAT | |
61 | bool | |
62 | default y if PPC64 | |
63 | ||
64 | config SYSVIPC_COMPAT | |
65 | bool | |
66 | depends on COMPAT && SYSVIPC | |
67 | default y | |
68 | ||
69 | # All PPC32s use generic nvram driver through ppc_md | |
70 | config GENERIC_NVRAM | |
71 | bool | |
72 | default y if PPC32 | |
73 | ||
74 | config SCHED_NO_NO_OMIT_FRAME_POINTER | |
75 | bool | |
76 | default y | |
77 | ||
78 | config ARCH_MAY_HAVE_PC_FDC | |
79 | bool | |
80 | default y | |
81 | ||
08264cbc KG |
82 | config PPC_OF |
83 | def_bool y | |
84 | ||
85 | config PPC_UDBG_16550 | |
86 | bool | |
87 | default n | |
88 | ||
08264cbc KG |
89 | config GENERIC_TBSYNC |
90 | bool | |
91 | default y if PPC32 && SMP | |
92 | default n | |
93 | ||
f4fc4a5b KG |
94 | config DEFAULT_UIMAGE |
95 | bool | |
96 | help | |
97 | Used to allow a board to specify it wants a uImage built by default | |
98 | default n | |
99 | ||
14cf11af PM |
100 | menu "Processor support" |
101 | choice | |
102 | prompt "Processor Type" | |
103 | depends on PPC32 | |
104 | default 6xx | |
105 | ||
08264cbc | 106 | config CLASSIC32 |
14cf11af PM |
107 | bool "6xx/7xx/74xx" |
108 | select PPC_FPU | |
08264cbc | 109 | select 6xx |
14cf11af PM |
110 | help |
111 | There are four families of PowerPC chips supported. The more common | |
112 | types (601, 603, 604, 740, 750, 7400), the Motorola embedded | |
113 | versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC | |
114 | embedded versions (403 and 405) and the high end 64 bit Power | |
115 | processors (POWER 3, POWER4, and IBM PPC970 also known as G5). | |
116 | ||
117 | Unless you are building a kernel for one of the embedded processor | |
118 | systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx. | |
119 | Note that the kernel runs in 32-bit mode even on 64-bit chips. | |
120 | ||
121 | config PPC_52xx | |
122 | bool "Freescale 52xx" | |
08264cbc KG |
123 | select 6xx |
124 | select PPC_FPU | |
14cf11af PM |
125 | |
126 | config PPC_82xx | |
127 | bool "Freescale 82xx" | |
08264cbc KG |
128 | select 6xx |
129 | select PPC_FPU | |
14cf11af PM |
130 | |
131 | config PPC_83xx | |
132 | bool "Freescale 83xx" | |
08264cbc KG |
133 | select 6xx |
134 | select FSL_SOC | |
135 | select 83xx | |
136 | select PPC_FPU | |
14cf11af | 137 | |
63dafe57 BB |
138 | config PPC_85xx |
139 | bool "Freescale 85xx" | |
140 | select E500 | |
141 | select FSL_SOC | |
142 | select 85xx | |
143 | ||
14cf11af PM |
144 | config 40x |
145 | bool "AMCC 40x" | |
146 | ||
147 | config 44x | |
148 | bool "AMCC 44x" | |
149 | ||
14cf11af PM |
150 | config 8xx |
151 | bool "Freescale 8xx" | |
152 | ||
153 | config E200 | |
154 | bool "Freescale e200" | |
155 | ||
14cf11af PM |
156 | endchoice |
157 | ||
158 | config POWER4_ONLY | |
159 | bool "Optimize for POWER4" | |
187a0067 | 160 | depends on PPC64 |
14cf11af PM |
161 | default n |
162 | ---help--- | |
163 | Cause the compiler to optimize for POWER4/POWER5/PPC970 processors. | |
164 | The resulting binary will not work on POWER3 or RS64 processors | |
165 | when compiled with binutils 2.15 or later. | |
166 | ||
167 | config POWER3 | |
168 | bool | |
187a0067 | 169 | depends on PPC64 |
14cf11af PM |
170 | default y if !POWER4_ONLY |
171 | ||
172 | config POWER4 | |
187a0067 | 173 | depends on PPC64 |
14cf11af PM |
174 | def_bool y |
175 | ||
08264cbc KG |
176 | config 6xx |
177 | bool | |
178 | ||
179 | # this is temp to handle compat with arch=ppc | |
180 | config 83xx | |
181 | bool | |
182 | ||
63dafe57 BB |
183 | # this is temp to handle compat with arch=ppc |
184 | config 85xx | |
185 | bool | |
186 | ||
187 | config E500 | |
188 | bool | |
189 | ||
14cf11af | 190 | config PPC_FPU |
187a0067 PM |
191 | bool |
192 | default y if PPC64 | |
14cf11af PM |
193 | |
194 | config BOOKE | |
195 | bool | |
196 | depends on E200 || E500 | |
197 | default y | |
198 | ||
199 | config FSL_BOOKE | |
200 | bool | |
201 | depends on E200 || E500 | |
202 | default y | |
203 | ||
204 | config PTE_64BIT | |
205 | bool | |
206 | depends on 44x || E500 | |
207 | default y if 44x | |
208 | default y if E500 && PHYS_64BIT | |
209 | ||
210 | config PHYS_64BIT | |
211 | bool 'Large physical address support' if E500 | |
212 | depends on 44x || E500 | |
213 | default y if 44x | |
214 | ---help--- | |
215 | This option enables kernel support for larger than 32-bit physical | |
216 | addresses. This features is not be available on all e500 cores. | |
217 | ||
218 | If in doubt, say N here. | |
219 | ||
220 | config ALTIVEC | |
221 | bool "AltiVec Support" | |
08264cbc | 222 | depends on CLASSIC32 || POWER4 |
14cf11af PM |
223 | ---help--- |
224 | This option enables kernel support for the Altivec extensions to the | |
225 | PowerPC processor. The kernel currently supports saving and restoring | |
226 | altivec registers, and turning on the 'altivec enable' bit so user | |
227 | processes can execute altivec instructions. | |
228 | ||
229 | This option is only usefully if you have a processor that supports | |
230 | altivec (G4, otherwise known as 74xx series), but does not have | |
231 | any affect on a non-altivec cpu (it does, however add code to the | |
232 | kernel). | |
233 | ||
234 | If in doubt, say Y here. | |
235 | ||
236 | config SPE | |
237 | bool "SPE Support" | |
238 | depends on E200 || E500 | |
63dafe57 | 239 | default y |
14cf11af PM |
240 | ---help--- |
241 | This option enables kernel support for the Signal Processing | |
242 | Extensions (SPE) to the PowerPC processor. The kernel currently | |
243 | supports saving and restoring SPE registers, and turning on the | |
244 | 'spe enable' bit so user processes can execute SPE instructions. | |
245 | ||
246 | This option is only useful if you have a processor that supports | |
247 | SPE (e500, otherwise known as 85xx series), but does not have any | |
248 | effect on a non-spe cpu (it does, however add code to the kernel). | |
249 | ||
250 | If in doubt, say Y here. | |
251 | ||
252 | config PPC_STD_MMU | |
253 | bool | |
254 | depends on 6xx || POWER3 || POWER4 || PPC64 | |
255 | default y | |
256 | ||
257 | config PPC_STD_MMU_32 | |
258 | def_bool y | |
259 | depends on PPC_STD_MMU && PPC32 | |
260 | ||
c6622f63 PM |
261 | config VIRT_CPU_ACCOUNTING |
262 | bool "Deterministic task and CPU time accounting" | |
263 | depends on PPC64 | |
264 | default y | |
265 | help | |
266 | Select this option to enable more accurate task and CPU time | |
267 | accounting. This is done by reading a CPU counter on each | |
268 | kernel entry and exit and on transitions within the kernel | |
269 | between system, softirq and hardirq state, so there is a | |
270 | small performance impact. This also enables accounting of | |
271 | stolen time on logically-partitioned systems running on | |
272 | IBM POWER5-based machines. | |
273 | ||
274 | If in doubt, say Y here. | |
275 | ||
14cf11af PM |
276 | config SMP |
277 | depends on PPC_STD_MMU | |
278 | bool "Symmetric multi-processing support" | |
279 | ---help--- | |
280 | This enables support for systems with more than one CPU. If you have | |
281 | a system with only one CPU, say N. If you have a system with more | |
282 | than one CPU, say Y. Note that the kernel does not currently | |
283 | support SMP machines with 603/603e/603ev or PPC750 ("G3") processors | |
284 | since they have inadequate hardware support for multiprocessor | |
285 | operation. | |
286 | ||
287 | If you say N here, the kernel will run on single and multiprocessor | |
288 | machines, but will use only one CPU of a multiprocessor machine. If | |
289 | you say Y here, the kernel will run on single-processor machines. | |
290 | On a single-processor machine, the kernel will run faster if you say | |
291 | N here. | |
292 | ||
293 | If you don't know what to do here, say N. | |
294 | ||
295 | config NR_CPUS | |
e8a167ac | 296 | int "Maximum number of CPUs (2-128)" |
14cf11af PM |
297 | range 2 128 |
298 | depends on SMP | |
299 | default "32" if PPC64 | |
300 | default "4" | |
301 | ||
302 | config NOT_COHERENT_CACHE | |
303 | bool | |
304 | depends on 4xx || 8xx || E200 | |
305 | default y | |
306 | endmenu | |
307 | ||
308 | source "init/Kconfig" | |
309 | ||
310 | menu "Platform support" | |
08264cbc | 311 | depends on PPC64 || CLASSIC32 |
14cf11af PM |
312 | |
313 | choice | |
314 | prompt "Machine type" | |
315 | default PPC_MULTIPLATFORM | |
316 | ||
317 | config PPC_MULTIPLATFORM | |
318 | bool "Generic desktop/server/laptop" | |
319 | help | |
320 | Select this option if configuring for an IBM pSeries or | |
321 | RS/6000 machine, an Apple machine, or a PReP, CHRP, | |
322 | Maple or Cell-based machine. | |
323 | ||
324 | config PPC_ISERIES | |
325 | bool "IBM Legacy iSeries" | |
326 | depends on PPC64 | |
327 | ||
328 | config EMBEDDED6xx | |
329 | bool "Embedded 6xx/7xx/7xxx-based board" | |
5be396b0 | 330 | depends on PPC32 && BROKEN |
14cf11af PM |
331 | |
332 | config APUS | |
333 | bool "Amiga-APUS" | |
334 | depends on PPC32 && BROKEN | |
335 | help | |
336 | Select APUS if configuring for a PowerUP Amiga. | |
337 | More information is available at: | |
338 | <http://linux-apus.sourceforge.net/>. | |
339 | endchoice | |
340 | ||
341 | config PPC_PSERIES | |
342 | depends on PPC_MULTIPLATFORM && PPC64 | |
343 | bool " IBM pSeries & new (POWER5-based) iSeries" | |
f9bd170a | 344 | select PPC_I8259 |
033ef338 PM |
345 | select PPC_RTAS |
346 | select RTAS_ERROR_LOGGING | |
13b8a272 | 347 | select PPC_UDBG_16550 |
14cf11af PM |
348 | default y |
349 | ||
350 | config PPC_CHRP | |
351 | bool " Common Hardware Reference Platform (CHRP) based machines" | |
352 | depends on PPC_MULTIPLATFORM && PPC32 | |
f9bd170a | 353 | select PPC_I8259 |
25635c71 | 354 | select PPC_INDIRECT_PCI |
033ef338 | 355 | select PPC_RTAS |
830825d6 | 356 | select PPC_MPC106 |
13b8a272 | 357 | select PPC_UDBG_16550 |
14cf11af PM |
358 | default y |
359 | ||
360 | config PPC_PMAC | |
361 | bool " Apple PowerMac based machines" | |
362 | depends on PPC_MULTIPLATFORM | |
25635c71 | 363 | select PPC_INDIRECT_PCI if PPC32 |
b6a4ce52 | 364 | select PPC_MPC106 if PPC32 |
14cf11af PM |
365 | default y |
366 | ||
367 | config PPC_PMAC64 | |
368 | bool | |
369 | depends on PPC_PMAC && POWER4 | |
35499c01 | 370 | select U3_DART |
1beb6a7d | 371 | select MPIC_BROKEN_U3 |
8ad200d7 | 372 | select GENERIC_TBSYNC |
f39224a8 | 373 | select PPC_970_NAP |
14cf11af PM |
374 | default y |
375 | ||
376 | config PPC_PREP | |
377 | bool " PowerPC Reference Platform (PReP) based machines" | |
5be396b0 | 378 | depends on PPC_MULTIPLATFORM && PPC32 && BROKEN |
f9bd170a | 379 | select PPC_I8259 |
25635c71 | 380 | select PPC_INDIRECT_PCI |
13b8a272 | 381 | select PPC_UDBG_16550 |
14cf11af PM |
382 | default y |
383 | ||
384 | config PPC_MAPLE | |
385 | depends on PPC_MULTIPLATFORM && PPC64 | |
386 | bool " Maple 970FX Evaluation Board" | |
387 | select U3_DART | |
388 | select MPIC_BROKEN_U3 | |
8ad200d7 | 389 | select GENERIC_TBSYNC |
13b8a272 | 390 | select PPC_UDBG_16550 |
f39224a8 | 391 | select PPC_970_NAP |
14cf11af PM |
392 | default n |
393 | help | |
394 | This option enables support for the Maple 970FX Evaluation Board. | |
395 | For more informations, refer to <http://www.970eval.com> | |
396 | ||
f3f66f59 AB |
397 | config PPC_CELL |
398 | bool " Cell Broadband Processor Architecture" | |
14cf11af | 399 | depends on PPC_MULTIPLATFORM && PPC64 |
033ef338 | 400 | select PPC_RTAS |
edf03c1e | 401 | select MMIO_NVRAM |
13b8a272 | 402 | select PPC_UDBG_16550 |
14cf11af | 403 | |
14cf11af PM |
404 | config XICS |
405 | depends on PPC_PSERIES | |
406 | bool | |
407 | default y | |
408 | ||
409 | config U3_DART | |
410 | bool | |
411 | depends on PPC_MULTIPLATFORM && PPC64 | |
412 | default n | |
413 | ||
414 | config MPIC | |
bbd0abda | 415 | depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP |
14cf11af PM |
416 | bool |
417 | default y | |
418 | ||
033ef338 PM |
419 | config PPC_RTAS |
420 | bool | |
421 | default n | |
422 | ||
423 | config RTAS_ERROR_LOGGING | |
424 | bool | |
425 | depends on PPC_RTAS | |
426 | default n | |
427 | ||
f4fcbbe9 PM |
428 | config RTAS_PROC |
429 | bool "Proc interface to RTAS" | |
e9add2ee | 430 | depends on PPC_RTAS |
f4fcbbe9 PM |
431 | default y |
432 | ||
433 | config RTAS_FLASH | |
434 | tristate "Firmware flash interface" | |
435 | depends on PPC64 && RTAS_PROC | |
e9add2ee | 436 | |
edf03c1e AB |
437 | config MMIO_NVRAM |
438 | bool | |
439 | default n | |
440 | ||
14cf11af PM |
441 | config MPIC_BROKEN_U3 |
442 | bool | |
443 | depends on PPC_MAPLE | |
444 | default y | |
445 | ||
f3f66f59 AB |
446 | config CELL_IIC |
447 | depends on PPC_CELL | |
14cf11af PM |
448 | bool |
449 | default y | |
450 | ||
451 | config IBMVIO | |
452 | depends on PPC_PSERIES || PPC_ISERIES | |
453 | bool | |
454 | default y | |
455 | ||
d7a30103 HS |
456 | config IBMEBUS |
457 | depends on PPC_PSERIES | |
458 | bool "Support for GX bus based adapters" | |
d7a30103 HS |
459 | help |
460 | Bus device driver for GX bus based adapters. | |
461 | ||
830825d6 PM |
462 | config PPC_MPC106 |
463 | bool | |
464 | default n | |
465 | ||
f39224a8 PM |
466 | config PPC_970_NAP |
467 | bool | |
468 | default n | |
469 | ||
14cf11af PM |
470 | source "drivers/cpufreq/Kconfig" |
471 | ||
472 | config CPU_FREQ_PMAC | |
473 | bool "Support for Apple PowerBooks" | |
474 | depends on CPU_FREQ && ADB_PMU && PPC32 | |
475 | select CPU_FREQ_TABLE | |
476 | help | |
477 | This adds support for frequency switching on Apple PowerBooks, | |
478 | this currently includes some models of iBook & Titanium | |
479 | PowerBook. | |
480 | ||
4350147a BH |
481 | config CPU_FREQ_PMAC64 |
482 | bool "Support for some Apple G5s" | |
483 | depends on CPU_FREQ && PMAC_SMU && PPC64 | |
484 | select CPU_FREQ_TABLE | |
485 | help | |
486 | This adds support for frequency switching on Apple iMac G5, | |
487 | and some of the more recent desktop G5 machines as well. | |
488 | ||
14cf11af PM |
489 | config PPC601_SYNC_FIX |
490 | bool "Workarounds for PPC601 bugs" | |
491 | depends on 6xx && (PPC_PREP || PPC_PMAC) | |
492 | help | |
493 | Some versions of the PPC601 (the first PowerPC chip) have bugs which | |
494 | mean that extra synchronization instructions are required near | |
495 | certain instructions, typically those that make major changes to the | |
496 | CPU state. These extra instructions reduce performance slightly. | |
497 | If you say N here, these extra instructions will not be included, | |
498 | resulting in a kernel which will run faster but may not run at all | |
499 | on some systems with the PPC601 chip. | |
500 | ||
501 | If in doubt, say Y here. | |
502 | ||
503 | config TAU | |
9b781727 | 504 | bool "On-chip CPU temperature sensor support" |
14cf11af PM |
505 | depends on 6xx |
506 | help | |
507 | G3 and G4 processors have an on-chip temperature sensor called the | |
508 | 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die | |
509 | temperature within 2-4 degrees Celsius. This option shows the current | |
510 | on-die temperature in /proc/cpuinfo if the cpu supports it. | |
511 | ||
512 | Unfortunately, on some chip revisions, this sensor is very inaccurate | |
9b781727 | 513 | and in many cases, does not work at all, so don't assume the cpu |
14cf11af PM |
514 | temp is actually what /proc/cpuinfo says it is. |
515 | ||
516 | config TAU_INT | |
517 | bool "Interrupt driven TAU driver (DANGEROUS)" | |
518 | depends on TAU | |
519 | ---help--- | |
520 | The TAU supports an interrupt driven mode which causes an interrupt | |
521 | whenever the temperature goes out of range. This is the fastest way | |
522 | to get notified the temp has exceeded a range. With this option off, | |
523 | a timer is used to re-check the temperature periodically. | |
524 | ||
525 | However, on some cpus it appears that the TAU interrupt hardware | |
526 | is buggy and can cause a situation which would lead unexplained hard | |
527 | lockups. | |
528 | ||
529 | Unless you are extending the TAU driver, or enjoy kernel/hardware | |
530 | debugging, leave this option off. | |
531 | ||
532 | config TAU_AVERAGE | |
533 | bool "Average high and low temp" | |
534 | depends on TAU | |
535 | ---help--- | |
536 | The TAU hardware can compare the temperature to an upper and lower | |
537 | bound. The default behavior is to show both the upper and lower | |
538 | bound in /proc/cpuinfo. If the range is large, the temperature is | |
539 | either changing a lot, or the TAU hardware is broken (likely on some | |
540 | G4's). If the range is small (around 4 degrees), the temperature is | |
541 | relatively stable. If you say Y here, a single temperature value, | |
542 | halfway between the upper and lower bounds, will be reported in | |
543 | /proc/cpuinfo. | |
544 | ||
545 | If in doubt, say N here. | |
546 | endmenu | |
547 | ||
548 | source arch/powerpc/platforms/embedded6xx/Kconfig | |
549 | source arch/powerpc/platforms/4xx/Kconfig | |
08264cbc | 550 | source arch/powerpc/platforms/83xx/Kconfig |
14cf11af PM |
551 | source arch/powerpc/platforms/85xx/Kconfig |
552 | source arch/powerpc/platforms/8xx/Kconfig | |
67207b96 | 553 | source arch/powerpc/platforms/cell/Kconfig |
14cf11af PM |
554 | |
555 | menu "Kernel options" | |
556 | ||
557 | config HIGHMEM | |
558 | bool "High memory support" | |
559 | depends on PPC32 | |
560 | ||
561 | source kernel/Kconfig.hz | |
562 | source kernel/Kconfig.preempt | |
563 | source "fs/Kconfig.binfmt" | |
564 | ||
565 | # We optimistically allocate largepages from the VM, so make the limit | |
566 | # large enough (16MB). This badly named config option is actually | |
567 | # max order + 1 | |
568 | config FORCE_MAX_ZONEORDER | |
569 | int | |
570 | depends on PPC64 | |
02864867 | 571 | default "9" if PPC_64K_PAGES |
14cf11af PM |
572 | default "13" |
573 | ||
574 | config MATH_EMULATION | |
575 | bool "Math emulation" | |
576 | depends on 4xx || 8xx || E200 || E500 | |
577 | ---help--- | |
578 | Some PowerPC chips designed for embedded applications do not have | |
579 | a floating-point unit and therefore do not implement the | |
580 | floating-point instructions in the PowerPC instruction set. If you | |
581 | say Y here, the kernel will include code to emulate a floating-point | |
582 | unit, which will allow programs that use floating-point | |
583 | instructions to run. | |
584 | ||
585 | config IOMMU_VMERGE | |
586 | bool "Enable IOMMU virtual merging (EXPERIMENTAL)" | |
587 | depends on EXPERIMENTAL && PPC64 | |
588 | default n | |
589 | help | |
590 | Cause IO segments sent to a device for DMA to be merged virtually | |
591 | by the IOMMU when they happen to have been allocated contiguously. | |
592 | This doesn't add pressure to the IOMMU allocator. However, some | |
593 | drivers don't support getting large merged segments coming back | |
594 | from *_map_sg(). Say Y if you know the drivers you are using are | |
595 | properly handling this case. | |
596 | ||
597 | config HOTPLUG_CPU | |
598 | bool "Support for enabling/disabling CPUs" | |
599 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) | |
600 | ---help--- | |
601 | Say Y here to be able to disable and re-enable individual | |
602 | CPUs at runtime on SMP machines. | |
603 | ||
604 | Say N if you are unsure. | |
605 | ||
606 | config KEXEC | |
607 | bool "kexec system call (EXPERIMENTAL)" | |
608 | depends on PPC_MULTIPLATFORM && EXPERIMENTAL | |
609 | help | |
610 | kexec is a system call that implements the ability to shutdown your | |
611 | current kernel, and to start another kernel. It is like a reboot | |
612 | but it is indepedent of the system firmware. And like a reboot | |
613 | you can start any kernel with it, not just Linux. | |
614 | ||
615 | The name comes from the similiarity to the exec system call. | |
616 | ||
617 | It is an ongoing process to be certain the hardware in a machine | |
618 | is properly shutdown, so do not be surprised if this code does not | |
619 | initially work for you. It may help to enable device hotplugging | |
620 | support. As of this writing the exact hardware interface is | |
621 | strongly in flux, so no good recommendation can be made. | |
622 | ||
e8625d46 | 623 | config CRASH_DUMP |
cd9c99d7 | 624 | bool "Build a kdump crash kernel (EXPERIMENTAL)" |
e8625d46 HM |
625 | depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL |
626 | help | |
627 | Build a kernel suitable for use as a kdump capture kernel. | |
628 | The kernel will be linked at a different address than normal, and | |
629 | so can only be used for Kdump. | |
630 | ||
631 | Don't change this unless you know what you are doing. | |
632 | ||
14cf11af PM |
633 | config EMBEDDEDBOOT |
634 | bool | |
635 | depends on 8xx || 8260 | |
636 | default y | |
637 | ||
638 | config PC_KEYBOARD | |
639 | bool "PC PS/2 style Keyboard" | |
640 | depends on 4xx || CPM2 | |
641 | ||
642 | config PPCBUG_NVRAM | |
643 | bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC | |
644 | default y if PPC_PREP | |
645 | ||
646 | config IRQ_ALL_CPUS | |
647 | bool "Distribute interrupts on all CPUs by default" | |
648 | depends on SMP && !MV64360 | |
649 | help | |
650 | This option gives the kernel permission to distribute IRQs across | |
651 | multiple CPUs. Saying N here will route all IRQs to the first | |
652 | CPU. Generally saying Y is safe, although some problems have been | |
653 | reported with SMP Power Macintoshes with this option enabled. | |
654 | ||
655 | source "arch/powerpc/platforms/pseries/Kconfig" | |
656 | ||
ffa27b6b AW |
657 | config NUMA |
658 | bool "NUMA support" | |
659 | depends on PPC64 | |
660 | default y if SMP && PPC_PSERIES | |
661 | ||
c80d79d7 YG |
662 | config NODES_SHIFT |
663 | int | |
664 | default "4" | |
665 | depends on NEED_MULTIPLE_NODES | |
666 | ||
14cf11af PM |
667 | config ARCH_SELECT_MEMORY_MODEL |
668 | def_bool y | |
669 | depends on PPC64 | |
670 | ||
671 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
672 | def_bool y |
673 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 674 | |
45fb6cea | 675 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 676 | def_bool y |
9100b205 | 677 | depends on PPC64 |
14cf11af | 678 | |
45fb6cea | 679 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 680 | def_bool y |
45fb6cea | 681 | depends on SMP && PPC_PSERIES |
14cf11af PM |
682 | |
683 | source "mm/Kconfig" | |
684 | ||
685 | config HAVE_ARCH_EARLY_PFN_TO_NID | |
686 | def_bool y | |
687 | depends on NEED_MULTIPLE_NODES | |
688 | ||
7e9191da MK |
689 | config ARCH_MEMORY_PROBE |
690 | def_bool y | |
691 | depends on MEMORY_HOTPLUG | |
692 | ||
3c726f8d BH |
693 | config PPC_64K_PAGES |
694 | bool "64k page size" | |
863c84b9 | 695 | depends on PPC64 |
3c726f8d BH |
696 | help |
697 | This option changes the kernel logical page size to 64k. On machines | |
698 | without processor support for 64k pages, the kernel will simulate | |
699 | them by loading each individual 4k page on demand transparently, | |
700 | while on hardware with such support, it will be used to map | |
701 | normal application pages. | |
702 | ||
14cf11af PM |
703 | config SCHED_SMT |
704 | bool "SMT (Hyperthreading) scheduler support" | |
705 | depends on PPC64 && SMP | |
706 | default off | |
707 | help | |
708 | SMT scheduler support improves the CPU scheduler's decision making | |
709 | when dealing with POWER5 cpus at a cost of slightly increased | |
710 | overhead in some places. If unsure say N here. | |
711 | ||
712 | config PROC_DEVICETREE | |
5f296755 PM |
713 | bool "Support for device tree in /proc" |
714 | depends on PROC_FS | |
14cf11af PM |
715 | help |
716 | This option adds a device-tree directory under /proc which contains | |
717 | an image of the device tree that the kernel copies from Open | |
5f296755 | 718 | Firmware or other boot firmware. If unsure, say Y here. |
14cf11af PM |
719 | |
720 | source "arch/powerpc/platforms/prep/Kconfig" | |
721 | ||
722 | config CMDLINE_BOOL | |
723 | bool "Default bootloader kernel arguments" | |
724 | depends on !PPC_ISERIES | |
725 | ||
726 | config CMDLINE | |
727 | string "Initial kernel command string" | |
728 | depends on CMDLINE_BOOL | |
729 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
730 | help | |
731 | On some platforms, there is currently no way for the boot loader to | |
732 | pass arguments to the kernel. For these platforms, you can supply | |
733 | some command-line options at build time by entering them here. In | |
734 | most cases you will need to specify the root device here. | |
735 | ||
736 | if !44x || BROKEN | |
737 | source kernel/power/Kconfig | |
738 | endif | |
739 | ||
740 | config SECCOMP | |
741 | bool "Enable seccomp to safely compute untrusted bytecode" | |
742 | depends on PROC_FS | |
743 | default y | |
744 | help | |
745 | This kernel feature is useful for number crunching applications | |
746 | that may need to compute untrusted bytecode during their | |
747 | execution. By using pipes or other transports made available to | |
748 | the process as file descriptors supporting the read/write | |
749 | syscalls, it's possible to isolate those applications in | |
750 | their own address space using seccomp. Once seccomp is | |
751 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
752 | and the task is only allowed to execute a few safe syscalls | |
753 | defined by each seccomp mode. | |
754 | ||
755 | If unsure, say Y. Only embedded should say N here. | |
756 | ||
757 | endmenu | |
758 | ||
759 | config ISA_DMA_API | |
760 | bool | |
761 | default y | |
762 | ||
763 | menu "Bus options" | |
764 | ||
765 | config ISA | |
766 | bool "Support for ISA-bus hardware" | |
767 | depends on PPC_PREP || PPC_CHRP | |
f9bd170a | 768 | select PPC_I8259 |
14cf11af PM |
769 | help |
770 | Find out whether you have ISA slots on your motherboard. ISA is the | |
771 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
772 | inside your box. If you have an Apple machine, say N here; if you | |
773 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If | |
774 | you have an embedded board, consult your board documentation. | |
775 | ||
776 | config GENERIC_ISA_DMA | |
777 | bool | |
778 | depends on PPC64 || POWER4 || 6xx && !CPM2 | |
779 | default y | |
780 | ||
f9bd170a PM |
781 | config PPC_I8259 |
782 | bool | |
f9bd170a PM |
783 | default n |
784 | ||
25635c71 PM |
785 | config PPC_INDIRECT_PCI |
786 | bool | |
787 | depends on PCI | |
63dafe57 | 788 | default y if 40x || 44x |
25635c71 PM |
789 | default n |
790 | ||
14cf11af PM |
791 | config EISA |
792 | bool | |
793 | ||
794 | config SBUS | |
795 | bool | |
796 | ||
08264cbc KG |
797 | config FSL_SOC |
798 | bool | |
799 | ||
14cf11af PM |
800 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
801 | config MCA | |
802 | bool | |
803 | ||
804 | config PCI | |
63dafe57 BB |
805 | bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES) |
806 | default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx && !PPC_85xx | |
14cf11af PM |
807 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS |
808 | default PCI_QSPAN if !4xx && !CPM2 && 8xx | |
809 | help | |
810 | Find out whether your system includes a PCI bus. PCI is the name of | |
811 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
812 | your box. If you say Y here, the kernel will include drivers and | |
813 | infrastructure code to support PCI bus devices. | |
814 | ||
815 | config PCI_DOMAINS | |
816 | bool | |
817 | default PCI | |
818 | ||
14cf11af PM |
819 | config PCI_QSPAN |
820 | bool "QSpan PCI" | |
821 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 822 | select PPC_I8259 |
14cf11af PM |
823 | help |
824 | Say Y here if you have a system based on a Motorola 8xx-series | |
825 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
826 | ||
827 | config PCI_8260 | |
828 | bool | |
829 | depends on PCI && 8260 | |
25635c71 | 830 | select PPC_INDIRECT_PCI |
14cf11af PM |
831 | default y |
832 | ||
833 | config 8260_PCI9 | |
834 | bool " Enable workaround for MPC826x erratum PCI 9" | |
835 | depends on PCI_8260 && !ADS8272 | |
836 | default y | |
837 | ||
838 | choice | |
839 | prompt " IDMA channel for PCI 9 workaround" | |
840 | depends on 8260_PCI9 | |
841 | ||
842 | config 8260_PCI9_IDMA1 | |
843 | bool "IDMA1" | |
844 | ||
845 | config 8260_PCI9_IDMA2 | |
846 | bool "IDMA2" | |
847 | ||
848 | config 8260_PCI9_IDMA3 | |
849 | bool "IDMA3" | |
850 | ||
851 | config 8260_PCI9_IDMA4 | |
852 | bool "IDMA4" | |
853 | ||
854 | endchoice | |
855 | ||
856 | source "drivers/pci/Kconfig" | |
857 | ||
858 | source "drivers/pcmcia/Kconfig" | |
859 | ||
860 | source "drivers/pci/hotplug/Kconfig" | |
861 | ||
862 | endmenu | |
863 | ||
864 | menu "Advanced setup" | |
865 | depends on PPC32 | |
866 | ||
867 | config ADVANCED_OPTIONS | |
868 | bool "Prompt for advanced kernel configuration options" | |
869 | help | |
870 | This option will enable prompting for a variety of advanced kernel | |
871 | configuration options. These options can cause the kernel to not | |
872 | work if they are set incorrectly, but can be used to optimize certain | |
873 | aspects of kernel memory management. | |
874 | ||
875 | Unless you know what you are doing, say N here. | |
876 | ||
877 | comment "Default settings for advanced configuration options are used" | |
878 | depends on !ADVANCED_OPTIONS | |
879 | ||
880 | config HIGHMEM_START_BOOL | |
881 | bool "Set high memory pool address" | |
882 | depends on ADVANCED_OPTIONS && HIGHMEM | |
883 | help | |
884 | This option allows you to set the base address of the kernel virtual | |
885 | area used to map high memory pages. This can be useful in | |
886 | optimizing the layout of kernel virtual memory. | |
887 | ||
888 | Say N here unless you know what you are doing. | |
889 | ||
890 | config HIGHMEM_START | |
891 | hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL | |
892 | default "0xfe000000" | |
893 | ||
894 | config LOWMEM_SIZE_BOOL | |
895 | bool "Set maximum low memory" | |
896 | depends on ADVANCED_OPTIONS | |
897 | help | |
898 | This option allows you to set the maximum amount of memory which | |
899 | will be used as "low memory", that is, memory which the kernel can | |
900 | access directly, without having to set up a kernel virtual mapping. | |
901 | This can be useful in optimizing the layout of kernel virtual | |
902 | memory. | |
903 | ||
904 | Say N here unless you know what you are doing. | |
905 | ||
906 | config LOWMEM_SIZE | |
907 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
908 | default "0x30000000" | |
909 | ||
910 | config KERNEL_START_BOOL | |
911 | bool "Set custom kernel base address" | |
912 | depends on ADVANCED_OPTIONS | |
913 | help | |
914 | This option allows you to set the kernel virtual address at which | |
915 | the kernel will map low memory (the kernel image will be linked at | |
916 | this address). This can be useful in optimizing the virtual memory | |
917 | layout of the system. | |
918 | ||
919 | Say N here unless you know what you are doing. | |
920 | ||
921 | config KERNEL_START | |
922 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
923 | default "0xc0000000" | |
924 | ||
925 | config TASK_SIZE_BOOL | |
926 | bool "Set custom user task size" | |
927 | depends on ADVANCED_OPTIONS | |
928 | help | |
929 | This option allows you to set the amount of virtual address space | |
930 | allocated to user tasks. This can be useful in optimizing the | |
931 | virtual memory layout of the system. | |
932 | ||
933 | Say N here unless you know what you are doing. | |
934 | ||
935 | config TASK_SIZE | |
936 | hex "Size of user task space" if TASK_SIZE_BOOL | |
937 | default "0x80000000" | |
938 | ||
939 | config CONSISTENT_START_BOOL | |
940 | bool "Set custom consistent memory pool address" | |
941 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
942 | help | |
943 | This option allows you to set the base virtual address | |
944 | of the the consistent memory pool. This pool of virtual | |
945 | memory is used to make consistent memory allocations. | |
946 | ||
947 | config CONSISTENT_START | |
948 | hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL | |
949 | default "0xff100000" if NOT_COHERENT_CACHE | |
950 | ||
951 | config CONSISTENT_SIZE_BOOL | |
952 | bool "Set custom consistent memory pool size" | |
953 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
954 | help | |
955 | This option allows you to set the size of the the | |
956 | consistent memory pool. This pool of virtual memory | |
957 | is used to make consistent memory allocations. | |
958 | ||
959 | config CONSISTENT_SIZE | |
960 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
961 | default "0x00200000" if NOT_COHERENT_CACHE | |
962 | ||
963 | config BOOT_LOAD_BOOL | |
964 | bool "Set the boot link/load address" | |
965 | depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM | |
966 | help | |
967 | This option allows you to set the initial load address of the zImage | |
968 | or zImage.initrd file. This can be useful if you are on a board | |
969 | which has a small amount of memory. | |
970 | ||
971 | Say N here unless you know what you are doing. | |
972 | ||
973 | config BOOT_LOAD | |
974 | hex "Link/load address for booting" if BOOT_LOAD_BOOL | |
975 | default "0x00400000" if 40x || 8xx || 8260 | |
976 | default "0x01000000" if 44x | |
977 | default "0x00800000" | |
978 | ||
979 | config PIN_TLB | |
980 | bool "Pinned Kernel TLBs (860 ONLY)" | |
981 | depends on ADVANCED_OPTIONS && 8xx | |
982 | endmenu | |
983 | ||
cabb5587 SR |
984 | if PPC64 |
985 | config KERNEL_START | |
986 | hex | |
eeb2d218 | 987 | default "0xc000000000000000" |
cabb5587 SR |
988 | endif |
989 | ||
14cf11af PM |
990 | source "net/Kconfig" |
991 | ||
992 | source "drivers/Kconfig" | |
993 | ||
994 | source "fs/Kconfig" | |
995 | ||
996 | # XXX source "arch/ppc/8xx_io/Kconfig" | |
997 | ||
998 | # XXX source "arch/ppc/8260_io/Kconfig" | |
999 | ||
1000 | source "arch/powerpc/platforms/iseries/Kconfig" | |
1001 | ||
1002 | source "lib/Kconfig" | |
1003 | ||
cd6b0762 PP |
1004 | menu "Instrumentation Support" |
1005 | depends on EXPERIMENTAL | |
1006 | ||
14cf11af PM |
1007 | source "arch/powerpc/oprofile/Kconfig" |
1008 | ||
cd6b0762 PP |
1009 | config KPROBES |
1010 | bool "Kprobes (EXPERIMENTAL)" | |
add2b6fd | 1011 | depends on PPC64 && EXPERIMENTAL && MODULES |
cd6b0762 PP |
1012 | help |
1013 | Kprobes allows you to trap at almost any kernel address and | |
1014 | execute a callback function. register_kprobe() establishes | |
1015 | a probepoint and specifies the callback. Kprobes is useful | |
1016 | for kernel debugging, non-intrusive instrumentation and testing. | |
1017 | If in doubt, say "N". | |
1018 | endmenu | |
1019 | ||
14cf11af PM |
1020 | source "arch/powerpc/Kconfig.debug" |
1021 | ||
1022 | source "security/Kconfig" | |
1023 | ||
1024 | config KEYS_COMPAT | |
1025 | bool | |
1026 | depends on COMPAT && KEYS | |
1027 | default y | |
1028 | ||
1029 | source "crypto/Kconfig" |