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