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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 | ||
29 | config UID16 | |
30 | bool | |
31 | ||
32 | config GENERIC_HARDIRQS | |
33 | bool | |
34 | default y | |
35 | ||
36 | config RWSEM_GENERIC_SPINLOCK | |
37 | bool | |
38 | ||
39 | config RWSEM_XCHGADD_ALGORITHM | |
40 | bool | |
41 | default y | |
42 | ||
43 | config GENERIC_CALIBRATE_DELAY | |
44 | bool | |
45 | default y | |
46 | ||
47 | config PPC | |
48 | bool | |
49 | default y | |
50 | ||
51 | config EARLY_PRINTK | |
52 | bool | |
53 | default y if PPC64 | |
54 | ||
55 | config COMPAT | |
56 | bool | |
57 | default y if PPC64 | |
58 | ||
59 | config SYSVIPC_COMPAT | |
60 | bool | |
61 | depends on COMPAT && SYSVIPC | |
62 | default y | |
63 | ||
64 | # All PPC32s use generic nvram driver through ppc_md | |
65 | config GENERIC_NVRAM | |
66 | bool | |
67 | default y if PPC32 | |
68 | ||
69 | config SCHED_NO_NO_OMIT_FRAME_POINTER | |
70 | bool | |
71 | default y | |
72 | ||
73 | config ARCH_MAY_HAVE_PC_FDC | |
74 | bool | |
75 | default y | |
76 | ||
77 | menu "Processor support" | |
78 | choice | |
79 | prompt "Processor Type" | |
80 | depends on PPC32 | |
81 | default 6xx | |
82 | ||
83 | config 6xx | |
84 | bool "6xx/7xx/74xx" | |
85 | select PPC_FPU | |
86 | help | |
87 | There are four families of PowerPC chips supported. The more common | |
88 | types (601, 603, 604, 740, 750, 7400), the Motorola embedded | |
89 | versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC | |
90 | embedded versions (403 and 405) and the high end 64 bit Power | |
91 | processors (POWER 3, POWER4, and IBM PPC970 also known as G5). | |
92 | ||
93 | Unless you are building a kernel for one of the embedded processor | |
94 | systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx. | |
95 | Note that the kernel runs in 32-bit mode even on 64-bit chips. | |
96 | ||
97 | config PPC_52xx | |
98 | bool "Freescale 52xx" | |
99 | ||
100 | config PPC_82xx | |
101 | bool "Freescale 82xx" | |
102 | ||
103 | config PPC_83xx | |
104 | bool "Freescale 83xx" | |
105 | ||
106 | config 40x | |
107 | bool "AMCC 40x" | |
108 | ||
109 | config 44x | |
110 | bool "AMCC 44x" | |
111 | ||
14cf11af PM |
112 | config 8xx |
113 | bool "Freescale 8xx" | |
114 | ||
115 | config E200 | |
116 | bool "Freescale e200" | |
117 | ||
118 | config E500 | |
119 | bool "Freescale e500" | |
120 | endchoice | |
121 | ||
122 | config POWER4_ONLY | |
123 | bool "Optimize for POWER4" | |
187a0067 | 124 | depends on PPC64 |
14cf11af PM |
125 | default n |
126 | ---help--- | |
127 | Cause the compiler to optimize for POWER4/POWER5/PPC970 processors. | |
128 | The resulting binary will not work on POWER3 or RS64 processors | |
129 | when compiled with binutils 2.15 or later. | |
130 | ||
131 | config POWER3 | |
132 | bool | |
187a0067 | 133 | depends on PPC64 |
14cf11af PM |
134 | default y if !POWER4_ONLY |
135 | ||
136 | config POWER4 | |
187a0067 | 137 | depends on PPC64 |
14cf11af PM |
138 | def_bool y |
139 | ||
140 | config PPC_FPU | |
187a0067 PM |
141 | bool |
142 | default y if PPC64 | |
14cf11af PM |
143 | |
144 | config BOOKE | |
145 | bool | |
146 | depends on E200 || E500 | |
147 | default y | |
148 | ||
149 | config FSL_BOOKE | |
150 | bool | |
151 | depends on E200 || E500 | |
152 | default y | |
153 | ||
154 | config PTE_64BIT | |
155 | bool | |
156 | depends on 44x || E500 | |
157 | default y if 44x | |
158 | default y if E500 && PHYS_64BIT | |
159 | ||
160 | config PHYS_64BIT | |
161 | bool 'Large physical address support' if E500 | |
162 | depends on 44x || E500 | |
163 | default y if 44x | |
164 | ---help--- | |
165 | This option enables kernel support for larger than 32-bit physical | |
166 | addresses. This features is not be available on all e500 cores. | |
167 | ||
168 | If in doubt, say N here. | |
169 | ||
170 | config ALTIVEC | |
171 | bool "AltiVec Support" | |
172 | depends on 6xx || POWER4 | |
173 | ---help--- | |
174 | This option enables kernel support for the Altivec extensions to the | |
175 | PowerPC processor. The kernel currently supports saving and restoring | |
176 | altivec registers, and turning on the 'altivec enable' bit so user | |
177 | processes can execute altivec instructions. | |
178 | ||
179 | This option is only usefully if you have a processor that supports | |
180 | altivec (G4, otherwise known as 74xx series), but does not have | |
181 | any affect on a non-altivec cpu (it does, however add code to the | |
182 | kernel). | |
183 | ||
184 | If in doubt, say Y here. | |
185 | ||
186 | config SPE | |
187 | bool "SPE Support" | |
188 | depends on E200 || E500 | |
189 | ---help--- | |
190 | This option enables kernel support for the Signal Processing | |
191 | Extensions (SPE) to the PowerPC processor. The kernel currently | |
192 | supports saving and restoring SPE registers, and turning on the | |
193 | 'spe enable' bit so user processes can execute SPE instructions. | |
194 | ||
195 | This option is only useful if you have a processor that supports | |
196 | SPE (e500, otherwise known as 85xx series), but does not have any | |
197 | effect on a non-spe cpu (it does, however add code to the kernel). | |
198 | ||
199 | If in doubt, say Y here. | |
200 | ||
201 | config PPC_STD_MMU | |
202 | bool | |
203 | depends on 6xx || POWER3 || POWER4 || PPC64 | |
204 | default y | |
205 | ||
206 | config PPC_STD_MMU_32 | |
207 | def_bool y | |
208 | depends on PPC_STD_MMU && PPC32 | |
209 | ||
210 | config SMP | |
211 | depends on PPC_STD_MMU | |
212 | bool "Symmetric multi-processing support" | |
213 | ---help--- | |
214 | This enables support for systems with more than one CPU. If you have | |
215 | a system with only one CPU, say N. If you have a system with more | |
216 | than one CPU, say Y. Note that the kernel does not currently | |
217 | support SMP machines with 603/603e/603ev or PPC750 ("G3") processors | |
218 | since they have inadequate hardware support for multiprocessor | |
219 | operation. | |
220 | ||
221 | If you say N here, the kernel will run on single and multiprocessor | |
222 | machines, but will use only one CPU of a multiprocessor machine. If | |
223 | you say Y here, the kernel will run on single-processor machines. | |
224 | On a single-processor machine, the kernel will run faster if you say | |
225 | N here. | |
226 | ||
227 | If you don't know what to do here, say N. | |
228 | ||
229 | config NR_CPUS | |
e8a167ac | 230 | int "Maximum number of CPUs (2-128)" |
14cf11af PM |
231 | range 2 128 |
232 | depends on SMP | |
233 | default "32" if PPC64 | |
234 | default "4" | |
235 | ||
236 | config NOT_COHERENT_CACHE | |
237 | bool | |
238 | depends on 4xx || 8xx || E200 | |
239 | default y | |
240 | endmenu | |
241 | ||
242 | source "init/Kconfig" | |
243 | ||
244 | menu "Platform support" | |
245 | depends on PPC64 || 6xx | |
246 | ||
247 | choice | |
248 | prompt "Machine type" | |
249 | default PPC_MULTIPLATFORM | |
250 | ||
251 | config PPC_MULTIPLATFORM | |
252 | bool "Generic desktop/server/laptop" | |
253 | help | |
254 | Select this option if configuring for an IBM pSeries or | |
255 | RS/6000 machine, an Apple machine, or a PReP, CHRP, | |
256 | Maple or Cell-based machine. | |
257 | ||
258 | config PPC_ISERIES | |
259 | bool "IBM Legacy iSeries" | |
260 | depends on PPC64 | |
261 | ||
262 | config EMBEDDED6xx | |
263 | bool "Embedded 6xx/7xx/7xxx-based board" | |
5be396b0 | 264 | depends on PPC32 && BROKEN |
14cf11af PM |
265 | |
266 | config APUS | |
267 | bool "Amiga-APUS" | |
268 | depends on PPC32 && BROKEN | |
269 | help | |
270 | Select APUS if configuring for a PowerUP Amiga. | |
271 | More information is available at: | |
272 | <http://linux-apus.sourceforge.net/>. | |
273 | endchoice | |
274 | ||
275 | config PPC_PSERIES | |
276 | depends on PPC_MULTIPLATFORM && PPC64 | |
277 | bool " IBM pSeries & new (POWER5-based) iSeries" | |
f9bd170a | 278 | select PPC_I8259 |
033ef338 PM |
279 | select PPC_RTAS |
280 | select RTAS_ERROR_LOGGING | |
14cf11af PM |
281 | default y |
282 | ||
283 | config PPC_CHRP | |
284 | bool " Common Hardware Reference Platform (CHRP) based machines" | |
285 | depends on PPC_MULTIPLATFORM && PPC32 | |
f9bd170a | 286 | select PPC_I8259 |
25635c71 | 287 | select PPC_INDIRECT_PCI |
033ef338 | 288 | select PPC_RTAS |
830825d6 | 289 | select PPC_MPC106 |
14cf11af PM |
290 | default y |
291 | ||
292 | config PPC_PMAC | |
293 | bool " Apple PowerMac based machines" | |
294 | depends on PPC_MULTIPLATFORM | |
25635c71 | 295 | select PPC_INDIRECT_PCI if PPC32 |
b6a4ce52 | 296 | select PPC_MPC106 if PPC32 |
14cf11af PM |
297 | default y |
298 | ||
299 | config PPC_PMAC64 | |
300 | bool | |
301 | depends on PPC_PMAC && POWER4 | |
35499c01 | 302 | select U3_DART |
8ad200d7 | 303 | select GENERIC_TBSYNC |
14cf11af PM |
304 | default y |
305 | ||
306 | config PPC_PREP | |
307 | bool " PowerPC Reference Platform (PReP) based machines" | |
5be396b0 | 308 | depends on PPC_MULTIPLATFORM && PPC32 && BROKEN |
f9bd170a | 309 | select PPC_I8259 |
25635c71 | 310 | select PPC_INDIRECT_PCI |
14cf11af PM |
311 | default y |
312 | ||
313 | config PPC_MAPLE | |
314 | depends on PPC_MULTIPLATFORM && PPC64 | |
315 | bool " Maple 970FX Evaluation Board" | |
316 | select U3_DART | |
317 | select MPIC_BROKEN_U3 | |
8ad200d7 | 318 | select GENERIC_TBSYNC |
14cf11af PM |
319 | default n |
320 | help | |
321 | This option enables support for the Maple 970FX Evaluation Board. | |
322 | For more informations, refer to <http://www.970eval.com> | |
323 | ||
f3f66f59 AB |
324 | config PPC_CELL |
325 | bool " Cell Broadband Processor Architecture" | |
14cf11af | 326 | depends on PPC_MULTIPLATFORM && PPC64 |
033ef338 | 327 | select PPC_RTAS |
edf03c1e | 328 | select MMIO_NVRAM |
14cf11af PM |
329 | |
330 | config PPC_OF | |
331 | bool | |
187a0067 | 332 | depends on PPC_MULTIPLATFORM # for now |
14cf11af PM |
333 | default y |
334 | ||
335 | config XICS | |
336 | depends on PPC_PSERIES | |
337 | bool | |
338 | default y | |
339 | ||
340 | config U3_DART | |
341 | bool | |
342 | depends on PPC_MULTIPLATFORM && PPC64 | |
343 | default n | |
344 | ||
345 | config MPIC | |
bbd0abda | 346 | depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP |
14cf11af PM |
347 | bool |
348 | default y | |
349 | ||
033ef338 PM |
350 | config PPC_RTAS |
351 | bool | |
352 | default n | |
353 | ||
354 | config RTAS_ERROR_LOGGING | |
355 | bool | |
356 | depends on PPC_RTAS | |
357 | default n | |
358 | ||
f4fcbbe9 PM |
359 | config RTAS_PROC |
360 | bool "Proc interface to RTAS" | |
e9add2ee | 361 | depends on PPC_RTAS |
f4fcbbe9 PM |
362 | default y |
363 | ||
364 | config RTAS_FLASH | |
365 | tristate "Firmware flash interface" | |
366 | depends on PPC64 && RTAS_PROC | |
e9add2ee | 367 | |
edf03c1e AB |
368 | config MMIO_NVRAM |
369 | bool | |
370 | default n | |
371 | ||
14cf11af PM |
372 | config MPIC_BROKEN_U3 |
373 | bool | |
374 | depends on PPC_MAPLE | |
375 | default y | |
376 | ||
f3f66f59 AB |
377 | config CELL_IIC |
378 | depends on PPC_CELL | |
14cf11af PM |
379 | bool |
380 | default y | |
381 | ||
382 | config IBMVIO | |
383 | depends on PPC_PSERIES || PPC_ISERIES | |
384 | bool | |
385 | default y | |
386 | ||
830825d6 PM |
387 | config PPC_MPC106 |
388 | bool | |
389 | default n | |
390 | ||
8ad200d7 PM |
391 | config GENERIC_TBSYNC |
392 | bool | |
393 | default y if CONFIG_PPC32 && CONFIG_SMP | |
394 | default n | |
395 | ||
14cf11af PM |
396 | source "drivers/cpufreq/Kconfig" |
397 | ||
398 | config CPU_FREQ_PMAC | |
399 | bool "Support for Apple PowerBooks" | |
400 | depends on CPU_FREQ && ADB_PMU && PPC32 | |
401 | select CPU_FREQ_TABLE | |
402 | help | |
403 | This adds support for frequency switching on Apple PowerBooks, | |
404 | this currently includes some models of iBook & Titanium | |
405 | PowerBook. | |
406 | ||
4350147a BH |
407 | config CPU_FREQ_PMAC64 |
408 | bool "Support for some Apple G5s" | |
409 | depends on CPU_FREQ && PMAC_SMU && PPC64 | |
410 | select CPU_FREQ_TABLE | |
411 | help | |
412 | This adds support for frequency switching on Apple iMac G5, | |
413 | and some of the more recent desktop G5 machines as well. | |
414 | ||
14cf11af PM |
415 | config PPC601_SYNC_FIX |
416 | bool "Workarounds for PPC601 bugs" | |
417 | depends on 6xx && (PPC_PREP || PPC_PMAC) | |
418 | help | |
419 | Some versions of the PPC601 (the first PowerPC chip) have bugs which | |
420 | mean that extra synchronization instructions are required near | |
421 | certain instructions, typically those that make major changes to the | |
422 | CPU state. These extra instructions reduce performance slightly. | |
423 | If you say N here, these extra instructions will not be included, | |
424 | resulting in a kernel which will run faster but may not run at all | |
425 | on some systems with the PPC601 chip. | |
426 | ||
427 | If in doubt, say Y here. | |
428 | ||
429 | config TAU | |
430 | bool "Thermal Management Support" | |
431 | depends on 6xx | |
432 | help | |
433 | G3 and G4 processors have an on-chip temperature sensor called the | |
434 | 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die | |
435 | temperature within 2-4 degrees Celsius. This option shows the current | |
436 | on-die temperature in /proc/cpuinfo if the cpu supports it. | |
437 | ||
438 | Unfortunately, on some chip revisions, this sensor is very inaccurate | |
439 | and in some cases, does not work at all, so don't assume the cpu | |
440 | temp is actually what /proc/cpuinfo says it is. | |
441 | ||
442 | config TAU_INT | |
443 | bool "Interrupt driven TAU driver (DANGEROUS)" | |
444 | depends on TAU | |
445 | ---help--- | |
446 | The TAU supports an interrupt driven mode which causes an interrupt | |
447 | whenever the temperature goes out of range. This is the fastest way | |
448 | to get notified the temp has exceeded a range. With this option off, | |
449 | a timer is used to re-check the temperature periodically. | |
450 | ||
451 | However, on some cpus it appears that the TAU interrupt hardware | |
452 | is buggy and can cause a situation which would lead unexplained hard | |
453 | lockups. | |
454 | ||
455 | Unless you are extending the TAU driver, or enjoy kernel/hardware | |
456 | debugging, leave this option off. | |
457 | ||
458 | config TAU_AVERAGE | |
459 | bool "Average high and low temp" | |
460 | depends on TAU | |
461 | ---help--- | |
462 | The TAU hardware can compare the temperature to an upper and lower | |
463 | bound. The default behavior is to show both the upper and lower | |
464 | bound in /proc/cpuinfo. If the range is large, the temperature is | |
465 | either changing a lot, or the TAU hardware is broken (likely on some | |
466 | G4's). If the range is small (around 4 degrees), the temperature is | |
467 | relatively stable. If you say Y here, a single temperature value, | |
468 | halfway between the upper and lower bounds, will be reported in | |
469 | /proc/cpuinfo. | |
470 | ||
471 | If in doubt, say N here. | |
472 | endmenu | |
473 | ||
474 | source arch/powerpc/platforms/embedded6xx/Kconfig | |
475 | source arch/powerpc/platforms/4xx/Kconfig | |
476 | source arch/powerpc/platforms/85xx/Kconfig | |
477 | source arch/powerpc/platforms/8xx/Kconfig | |
478 | ||
479 | menu "Kernel options" | |
480 | ||
481 | config HIGHMEM | |
482 | bool "High memory support" | |
483 | depends on PPC32 | |
484 | ||
485 | source kernel/Kconfig.hz | |
486 | source kernel/Kconfig.preempt | |
487 | source "fs/Kconfig.binfmt" | |
488 | ||
489 | # We optimistically allocate largepages from the VM, so make the limit | |
490 | # large enough (16MB). This badly named config option is actually | |
491 | # max order + 1 | |
492 | config FORCE_MAX_ZONEORDER | |
493 | int | |
494 | depends on PPC64 | |
02864867 | 495 | default "9" if PPC_64K_PAGES |
14cf11af PM |
496 | default "13" |
497 | ||
498 | config MATH_EMULATION | |
499 | bool "Math emulation" | |
500 | depends on 4xx || 8xx || E200 || E500 | |
501 | ---help--- | |
502 | Some PowerPC chips designed for embedded applications do not have | |
503 | a floating-point unit and therefore do not implement the | |
504 | floating-point instructions in the PowerPC instruction set. If you | |
505 | say Y here, the kernel will include code to emulate a floating-point | |
506 | unit, which will allow programs that use floating-point | |
507 | instructions to run. | |
508 | ||
509 | config IOMMU_VMERGE | |
510 | bool "Enable IOMMU virtual merging (EXPERIMENTAL)" | |
511 | depends on EXPERIMENTAL && PPC64 | |
512 | default n | |
513 | help | |
514 | Cause IO segments sent to a device for DMA to be merged virtually | |
515 | by the IOMMU when they happen to have been allocated contiguously. | |
516 | This doesn't add pressure to the IOMMU allocator. However, some | |
517 | drivers don't support getting large merged segments coming back | |
518 | from *_map_sg(). Say Y if you know the drivers you are using are | |
519 | properly handling this case. | |
520 | ||
521 | config HOTPLUG_CPU | |
522 | bool "Support for enabling/disabling CPUs" | |
523 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) | |
524 | ---help--- | |
525 | Say Y here to be able to disable and re-enable individual | |
526 | CPUs at runtime on SMP machines. | |
527 | ||
528 | Say N if you are unsure. | |
529 | ||
530 | config KEXEC | |
531 | bool "kexec system call (EXPERIMENTAL)" | |
532 | depends on PPC_MULTIPLATFORM && EXPERIMENTAL | |
533 | help | |
534 | kexec is a system call that implements the ability to shutdown your | |
535 | current kernel, and to start another kernel. It is like a reboot | |
536 | but it is indepedent of the system firmware. And like a reboot | |
537 | you can start any kernel with it, not just Linux. | |
538 | ||
539 | The name comes from the similiarity to the exec system call. | |
540 | ||
541 | It is an ongoing process to be certain the hardware in a machine | |
542 | is properly shutdown, so do not be surprised if this code does not | |
543 | initially work for you. It may help to enable device hotplugging | |
544 | support. As of this writing the exact hardware interface is | |
545 | strongly in flux, so no good recommendation can be made. | |
546 | ||
547 | config EMBEDDEDBOOT | |
548 | bool | |
549 | depends on 8xx || 8260 | |
550 | default y | |
551 | ||
552 | config PC_KEYBOARD | |
553 | bool "PC PS/2 style Keyboard" | |
554 | depends on 4xx || CPM2 | |
555 | ||
556 | config PPCBUG_NVRAM | |
557 | bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC | |
558 | default y if PPC_PREP | |
559 | ||
560 | config IRQ_ALL_CPUS | |
561 | bool "Distribute interrupts on all CPUs by default" | |
562 | depends on SMP && !MV64360 | |
563 | help | |
564 | This option gives the kernel permission to distribute IRQs across | |
565 | multiple CPUs. Saying N here will route all IRQs to the first | |
566 | CPU. Generally saying Y is safe, although some problems have been | |
567 | reported with SMP Power Macintoshes with this option enabled. | |
568 | ||
569 | source "arch/powerpc/platforms/pseries/Kconfig" | |
570 | ||
ffa27b6b AW |
571 | config NUMA |
572 | bool "NUMA support" | |
573 | depends on PPC64 | |
574 | default y if SMP && PPC_PSERIES | |
575 | ||
14cf11af PM |
576 | config ARCH_SELECT_MEMORY_MODEL |
577 | def_bool y | |
578 | depends on PPC64 | |
579 | ||
580 | config ARCH_FLATMEM_ENABLE | |
581 | def_bool y | |
582 | depends on PPC64 && !NUMA | |
583 | ||
45fb6cea | 584 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 585 | def_bool y |
14cf11af | 586 | |
45fb6cea | 587 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 588 | def_bool y |
45fb6cea | 589 | depends on SMP && PPC_PSERIES |
14cf11af PM |
590 | |
591 | source "mm/Kconfig" | |
592 | ||
593 | config HAVE_ARCH_EARLY_PFN_TO_NID | |
594 | def_bool y | |
595 | depends on NEED_MULTIPLE_NODES | |
596 | ||
7e9191da MK |
597 | config ARCH_MEMORY_PROBE |
598 | def_bool y | |
599 | depends on MEMORY_HOTPLUG | |
600 | ||
3c726f8d BH |
601 | config PPC_64K_PAGES |
602 | bool "64k page size" | |
863c84b9 | 603 | depends on PPC64 |
3c726f8d BH |
604 | help |
605 | This option changes the kernel logical page size to 64k. On machines | |
606 | without processor support for 64k pages, the kernel will simulate | |
607 | them by loading each individual 4k page on demand transparently, | |
608 | while on hardware with such support, it will be used to map | |
609 | normal application pages. | |
610 | ||
14cf11af PM |
611 | config SCHED_SMT |
612 | bool "SMT (Hyperthreading) scheduler support" | |
613 | depends on PPC64 && SMP | |
614 | default off | |
615 | help | |
616 | SMT scheduler support improves the CPU scheduler's decision making | |
617 | when dealing with POWER5 cpus at a cost of slightly increased | |
618 | overhead in some places. If unsure say N here. | |
619 | ||
620 | config PROC_DEVICETREE | |
5f296755 PM |
621 | bool "Support for device tree in /proc" |
622 | depends on PROC_FS | |
14cf11af PM |
623 | help |
624 | This option adds a device-tree directory under /proc which contains | |
625 | an image of the device tree that the kernel copies from Open | |
5f296755 | 626 | Firmware or other boot firmware. If unsure, say Y here. |
14cf11af PM |
627 | |
628 | source "arch/powerpc/platforms/prep/Kconfig" | |
629 | ||
630 | config CMDLINE_BOOL | |
631 | bool "Default bootloader kernel arguments" | |
632 | depends on !PPC_ISERIES | |
633 | ||
634 | config CMDLINE | |
635 | string "Initial kernel command string" | |
636 | depends on CMDLINE_BOOL | |
637 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
638 | help | |
639 | On some platforms, there is currently no way for the boot loader to | |
640 | pass arguments to the kernel. For these platforms, you can supply | |
641 | some command-line options at build time by entering them here. In | |
642 | most cases you will need to specify the root device here. | |
643 | ||
644 | if !44x || BROKEN | |
645 | source kernel/power/Kconfig | |
646 | endif | |
647 | ||
648 | config SECCOMP | |
649 | bool "Enable seccomp to safely compute untrusted bytecode" | |
650 | depends on PROC_FS | |
651 | default y | |
652 | help | |
653 | This kernel feature is useful for number crunching applications | |
654 | that may need to compute untrusted bytecode during their | |
655 | execution. By using pipes or other transports made available to | |
656 | the process as file descriptors supporting the read/write | |
657 | syscalls, it's possible to isolate those applications in | |
658 | their own address space using seccomp. Once seccomp is | |
659 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
660 | and the task is only allowed to execute a few safe syscalls | |
661 | defined by each seccomp mode. | |
662 | ||
663 | If unsure, say Y. Only embedded should say N here. | |
664 | ||
665 | endmenu | |
666 | ||
667 | config ISA_DMA_API | |
668 | bool | |
669 | default y | |
670 | ||
671 | menu "Bus options" | |
672 | ||
673 | config ISA | |
674 | bool "Support for ISA-bus hardware" | |
675 | depends on PPC_PREP || PPC_CHRP | |
f9bd170a | 676 | select PPC_I8259 |
14cf11af PM |
677 | help |
678 | Find out whether you have ISA slots on your motherboard. ISA is the | |
679 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
680 | inside your box. If you have an Apple machine, say N here; if you | |
681 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If | |
682 | you have an embedded board, consult your board documentation. | |
683 | ||
684 | config GENERIC_ISA_DMA | |
685 | bool | |
686 | depends on PPC64 || POWER4 || 6xx && !CPM2 | |
687 | default y | |
688 | ||
f9bd170a PM |
689 | config PPC_I8259 |
690 | bool | |
691 | default y if 85xx | |
692 | default n | |
693 | ||
25635c71 PM |
694 | config PPC_INDIRECT_PCI |
695 | bool | |
696 | depends on PCI | |
697 | default y if 40x || 44x || 85xx || 83xx | |
698 | default n | |
699 | ||
14cf11af PM |
700 | config EISA |
701 | bool | |
702 | ||
703 | config SBUS | |
704 | bool | |
705 | ||
706 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any | |
707 | config MCA | |
708 | bool | |
709 | ||
710 | config PCI | |
711 | bool "PCI support" if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES) | |
712 | default y if !40x && !CPM2 && !8xx && !APUS && !83xx && !85xx | |
713 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS | |
714 | default PCI_QSPAN if !4xx && !CPM2 && 8xx | |
715 | help | |
716 | Find out whether your system includes a PCI bus. PCI is the name of | |
717 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
718 | your box. If you say Y here, the kernel will include drivers and | |
719 | infrastructure code to support PCI bus devices. | |
720 | ||
721 | config PCI_DOMAINS | |
722 | bool | |
723 | default PCI | |
724 | ||
725 | config MPC83xx_PCI2 | |
726 | bool " Supprt for 2nd PCI host controller" | |
727 | depends on PCI && MPC834x | |
728 | default y if MPC834x_SYS | |
729 | ||
730 | config PCI_QSPAN | |
731 | bool "QSpan PCI" | |
732 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 733 | select PPC_I8259 |
14cf11af PM |
734 | help |
735 | Say Y here if you have a system based on a Motorola 8xx-series | |
736 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
737 | ||
738 | config PCI_8260 | |
739 | bool | |
740 | depends on PCI && 8260 | |
25635c71 | 741 | select PPC_INDIRECT_PCI |
14cf11af PM |
742 | default y |
743 | ||
744 | config 8260_PCI9 | |
745 | bool " Enable workaround for MPC826x erratum PCI 9" | |
746 | depends on PCI_8260 && !ADS8272 | |
747 | default y | |
748 | ||
749 | choice | |
750 | prompt " IDMA channel for PCI 9 workaround" | |
751 | depends on 8260_PCI9 | |
752 | ||
753 | config 8260_PCI9_IDMA1 | |
754 | bool "IDMA1" | |
755 | ||
756 | config 8260_PCI9_IDMA2 | |
757 | bool "IDMA2" | |
758 | ||
759 | config 8260_PCI9_IDMA3 | |
760 | bool "IDMA3" | |
761 | ||
762 | config 8260_PCI9_IDMA4 | |
763 | bool "IDMA4" | |
764 | ||
765 | endchoice | |
766 | ||
767 | source "drivers/pci/Kconfig" | |
768 | ||
769 | source "drivers/pcmcia/Kconfig" | |
770 | ||
771 | source "drivers/pci/hotplug/Kconfig" | |
772 | ||
773 | endmenu | |
774 | ||
775 | menu "Advanced setup" | |
776 | depends on PPC32 | |
777 | ||
778 | config ADVANCED_OPTIONS | |
779 | bool "Prompt for advanced kernel configuration options" | |
780 | help | |
781 | This option will enable prompting for a variety of advanced kernel | |
782 | configuration options. These options can cause the kernel to not | |
783 | work if they are set incorrectly, but can be used to optimize certain | |
784 | aspects of kernel memory management. | |
785 | ||
786 | Unless you know what you are doing, say N here. | |
787 | ||
788 | comment "Default settings for advanced configuration options are used" | |
789 | depends on !ADVANCED_OPTIONS | |
790 | ||
791 | config HIGHMEM_START_BOOL | |
792 | bool "Set high memory pool address" | |
793 | depends on ADVANCED_OPTIONS && HIGHMEM | |
794 | help | |
795 | This option allows you to set the base address of the kernel virtual | |
796 | area used to map high memory pages. This can be useful in | |
797 | optimizing the layout of kernel virtual memory. | |
798 | ||
799 | Say N here unless you know what you are doing. | |
800 | ||
801 | config HIGHMEM_START | |
802 | hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL | |
803 | default "0xfe000000" | |
804 | ||
805 | config LOWMEM_SIZE_BOOL | |
806 | bool "Set maximum low memory" | |
807 | depends on ADVANCED_OPTIONS | |
808 | help | |
809 | This option allows you to set the maximum amount of memory which | |
810 | will be used as "low memory", that is, memory which the kernel can | |
811 | access directly, without having to set up a kernel virtual mapping. | |
812 | This can be useful in optimizing the layout of kernel virtual | |
813 | memory. | |
814 | ||
815 | Say N here unless you know what you are doing. | |
816 | ||
817 | config LOWMEM_SIZE | |
818 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
819 | default "0x30000000" | |
820 | ||
821 | config KERNEL_START_BOOL | |
822 | bool "Set custom kernel base address" | |
823 | depends on ADVANCED_OPTIONS | |
824 | help | |
825 | This option allows you to set the kernel virtual address at which | |
826 | the kernel will map low memory (the kernel image will be linked at | |
827 | this address). This can be useful in optimizing the virtual memory | |
828 | layout of the system. | |
829 | ||
830 | Say N here unless you know what you are doing. | |
831 | ||
832 | config KERNEL_START | |
833 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
834 | default "0xc0000000" | |
835 | ||
836 | config TASK_SIZE_BOOL | |
837 | bool "Set custom user task size" | |
838 | depends on ADVANCED_OPTIONS | |
839 | help | |
840 | This option allows you to set the amount of virtual address space | |
841 | allocated to user tasks. This can be useful in optimizing the | |
842 | virtual memory layout of the system. | |
843 | ||
844 | Say N here unless you know what you are doing. | |
845 | ||
846 | config TASK_SIZE | |
847 | hex "Size of user task space" if TASK_SIZE_BOOL | |
848 | default "0x80000000" | |
849 | ||
850 | config CONSISTENT_START_BOOL | |
851 | bool "Set custom consistent memory pool address" | |
852 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
853 | help | |
854 | This option allows you to set the base virtual address | |
855 | of the the consistent memory pool. This pool of virtual | |
856 | memory is used to make consistent memory allocations. | |
857 | ||
858 | config CONSISTENT_START | |
859 | hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL | |
860 | default "0xff100000" if NOT_COHERENT_CACHE | |
861 | ||
862 | config CONSISTENT_SIZE_BOOL | |
863 | bool "Set custom consistent memory pool size" | |
864 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
865 | help | |
866 | This option allows you to set the size of the the | |
867 | consistent memory pool. This pool of virtual memory | |
868 | is used to make consistent memory allocations. | |
869 | ||
870 | config CONSISTENT_SIZE | |
871 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
872 | default "0x00200000" if NOT_COHERENT_CACHE | |
873 | ||
874 | config BOOT_LOAD_BOOL | |
875 | bool "Set the boot link/load address" | |
876 | depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM | |
877 | help | |
878 | This option allows you to set the initial load address of the zImage | |
879 | or zImage.initrd file. This can be useful if you are on a board | |
880 | which has a small amount of memory. | |
881 | ||
882 | Say N here unless you know what you are doing. | |
883 | ||
884 | config BOOT_LOAD | |
885 | hex "Link/load address for booting" if BOOT_LOAD_BOOL | |
886 | default "0x00400000" if 40x || 8xx || 8260 | |
887 | default "0x01000000" if 44x | |
888 | default "0x00800000" | |
889 | ||
890 | config PIN_TLB | |
891 | bool "Pinned Kernel TLBs (860 ONLY)" | |
892 | depends on ADVANCED_OPTIONS && 8xx | |
893 | endmenu | |
894 | ||
cabb5587 SR |
895 | if PPC64 |
896 | config KERNEL_START | |
897 | hex | |
eeb2d218 | 898 | default "0xc000000000000000" |
cabb5587 SR |
899 | endif |
900 | ||
14cf11af PM |
901 | source "net/Kconfig" |
902 | ||
903 | source "drivers/Kconfig" | |
904 | ||
905 | source "fs/Kconfig" | |
906 | ||
907 | # XXX source "arch/ppc/8xx_io/Kconfig" | |
908 | ||
909 | # XXX source "arch/ppc/8260_io/Kconfig" | |
910 | ||
911 | source "arch/powerpc/platforms/iseries/Kconfig" | |
912 | ||
913 | source "lib/Kconfig" | |
914 | ||
cd6b0762 PP |
915 | menu "Instrumentation Support" |
916 | depends on EXPERIMENTAL | |
917 | ||
14cf11af PM |
918 | source "arch/powerpc/oprofile/Kconfig" |
919 | ||
cd6b0762 PP |
920 | config KPROBES |
921 | bool "Kprobes (EXPERIMENTAL)" | |
7568cb4e | 922 | depends on PPC64 |
cd6b0762 PP |
923 | help |
924 | Kprobes allows you to trap at almost any kernel address and | |
925 | execute a callback function. register_kprobe() establishes | |
926 | a probepoint and specifies the callback. Kprobes is useful | |
927 | for kernel debugging, non-intrusive instrumentation and testing. | |
928 | If in doubt, say "N". | |
929 | endmenu | |
930 | ||
14cf11af PM |
931 | source "arch/powerpc/Kconfig.debug" |
932 | ||
933 | source "security/Kconfig" | |
934 | ||
935 | config KEYS_COMPAT | |
936 | bool | |
937 | depends on COMPAT && KEYS | |
938 | default y | |
939 | ||
940 | source "crypto/Kconfig" |