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