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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 | ||
17e638bc JB |
14 | config PPC_PM_NEEDS_RTC_LIB |
15 | bool | |
16 | select RTC_LIB | |
17 | default y if PM | |
18 | ||
14cf11af PM |
19 | config PPC32 |
20 | bool | |
21 | default y if !PPC64 | |
22 | ||
23 | config 64BIT | |
24 | bool | |
25 | default y if PPC64 | |
26 | ||
27 | config PPC_MERGE | |
28 | def_bool y | |
29 | ||
30 | config MMU | |
31 | bool | |
32 | default y | |
33 | ||
14cf11af PM |
34 | config GENERIC_HARDIRQS |
35 | bool | |
36 | default y | |
37 | ||
0d7012a9 IM |
38 | config IRQ_PER_CPU |
39 | bool | |
40 | default y | |
41 | ||
14cf11af PM |
42 | config RWSEM_GENERIC_SPINLOCK |
43 | bool | |
44 | ||
45 | config RWSEM_XCHGADD_ALGORITHM | |
46 | bool | |
47 | default y | |
48 | ||
f0d1b0b3 DH |
49 | config ARCH_HAS_ILOG2_U32 |
50 | bool | |
ef55d53c | 51 | default y |
f0d1b0b3 DH |
52 | |
53 | config ARCH_HAS_ILOG2_U64 | |
54 | bool | |
ef55d53c | 55 | default y if 64BIT |
f0d1b0b3 | 56 | |
e779b2f9 AM |
57 | config GENERIC_HWEIGHT |
58 | bool | |
59 | default y | |
60 | ||
14cf11af PM |
61 | config GENERIC_CALIBRATE_DELAY |
62 | bool | |
63 | default y | |
64 | ||
0a9cb46a JM |
65 | config GENERIC_FIND_NEXT_BIT |
66 | bool | |
67 | default y | |
68 | ||
14cf11af PM |
69 | config PPC |
70 | bool | |
71 | default y | |
72 | ||
73 | config EARLY_PRINTK | |
74 | bool | |
51d3082f | 75 | default y |
14cf11af PM |
76 | |
77 | config COMPAT | |
78 | bool | |
79 | default y if PPC64 | |
80 | ||
81 | config SYSVIPC_COMPAT | |
82 | bool | |
83 | depends on COMPAT && SYSVIPC | |
84 | default y | |
85 | ||
86 | # All PPC32s use generic nvram driver through ppc_md | |
87 | config GENERIC_NVRAM | |
88 | bool | |
89 | default y if PPC32 | |
90 | ||
91 | config SCHED_NO_NO_OMIT_FRAME_POINTER | |
92 | bool | |
93 | default y | |
94 | ||
95 | config ARCH_MAY_HAVE_PC_FDC | |
96 | bool | |
bed59275 | 97 | default !PPC_PSERIES || PCI |
14cf11af | 98 | |
08264cbc KG |
99 | config PPC_OF |
100 | def_bool y | |
101 | ||
102 | config PPC_UDBG_16550 | |
103 | bool | |
104 | default n | |
105 | ||
08264cbc KG |
106 | config GENERIC_TBSYNC |
107 | bool | |
108 | default y if PPC32 && SMP | |
109 | default n | |
110 | ||
e65e1fc2 AV |
111 | config AUDIT_ARCH |
112 | bool | |
113 | default y | |
114 | ||
73c9ceab JF |
115 | config GENERIC_BUG |
116 | bool | |
117 | default y | |
118 | depends on BUG | |
119 | ||
b3028878 JB |
120 | config SYS_SUPPORTS_APM_EMULATION |
121 | bool | |
122 | ||
30520864 CL |
123 | # |
124 | # Powerpc uses the slab allocator to manage its ptes and the | |
125 | # page structs of ptes are used for splitting the page table | |
126 | # lock for configurations supporting more than SPLIT_PTLOCK_CPUS. | |
127 | # | |
128 | # In that special configuration the page structs of slabs are modified. | |
129 | # This setting disables the selection of SLUB as a slab allocator. | |
130 | # | |
131 | config ARCH_USES_SLAB_PAGE_STRUCT | |
132 | bool | |
133 | default y | |
134 | depends on SPLIT_PTLOCK_CPUS <= NR_CPUS | |
135 | ||
f4fc4a5b KG |
136 | config DEFAULT_UIMAGE |
137 | bool | |
138 | help | |
139 | Used to allow a board to specify it wants a uImage built by default | |
140 | default n | |
141 | ||
543b9fd3 JB |
142 | config PPC64_SWSUSP |
143 | bool | |
144 | depends on PPC64 && (BROKEN || (PPC_PMAC64 && EXPERIMENTAL)) | |
145 | default y | |
146 | ||
14cf11af PM |
147 | menu "Processor support" |
148 | choice | |
149 | prompt "Processor Type" | |
150 | depends on PPC32 | |
151 | default 6xx | |
152 | ||
08264cbc | 153 | config CLASSIC32 |
650f3289 | 154 | bool "52xx/6xx/7xx/74xx" |
14cf11af | 155 | select PPC_FPU |
08264cbc | 156 | select 6xx |
14cf11af PM |
157 | help |
158 | There are four families of PowerPC chips supported. The more common | |
159 | types (601, 603, 604, 740, 750, 7400), the Motorola embedded | |
160 | versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC | |
161 | embedded versions (403 and 405) and the high end 64 bit Power | |
162 | processors (POWER 3, POWER4, and IBM PPC970 also known as G5). | |
650f3289 GL |
163 | |
164 | This option is the catch-all for 6xx types, including some of the | |
165 | embedded versions. Unless there is see an option for the specific | |
166 | chip family you are using, you want this option. | |
167 | ||
168 | You do not want this if you are building a kernel for a 64 bit | |
169 | IBM RS/6000 or an Apple G5, choose 6xx. | |
170 | ||
171 | If unsure, select this option | |
14cf11af | 172 | |
14cf11af PM |
173 | Note that the kernel runs in 32-bit mode even on 64-bit chips. |
174 | ||
14cf11af PM |
175 | config PPC_82xx |
176 | bool "Freescale 82xx" | |
08264cbc KG |
177 | select 6xx |
178 | select PPC_FPU | |
14cf11af PM |
179 | |
180 | config PPC_83xx | |
181 | bool "Freescale 83xx" | |
08264cbc KG |
182 | select 6xx |
183 | select FSL_SOC | |
184 | select 83xx | |
185 | select PPC_FPU | |
270429ba | 186 | select WANT_DEVICE_TREE |
14cf11af | 187 | |
63dafe57 BB |
188 | config PPC_85xx |
189 | bool "Freescale 85xx" | |
190 | select E500 | |
191 | select FSL_SOC | |
192 | select 85xx | |
4536b937 | 193 | select WANT_DEVICE_TREE |
63dafe57 | 194 | |
c9b484b5 JL |
195 | config PPC_86xx |
196 | bool "Freescale 86xx" | |
197 | select 6xx | |
198 | select FSL_SOC | |
3e4e97f4 | 199 | select FSL_PCIE |
c9b484b5 JL |
200 | select PPC_FPU |
201 | select ALTIVEC | |
202 | help | |
203 | The Freescale E600 SoCs have 74xx cores. | |
204 | ||
5902ebce VB |
205 | config PPC_8xx |
206 | bool "Freescale 8xx" | |
207 | select FSL_SOC | |
208 | select 8xx | |
209 | ||
14cf11af PM |
210 | config 40x |
211 | bool "AMCC 40x" | |
4c75a6f4 | 212 | select PPC_DCR_NATIVE |
14cf11af PM |
213 | |
214 | config 44x | |
215 | bool "AMCC 44x" | |
4c75a6f4 | 216 | select PPC_DCR_NATIVE |
f6dfc805 | 217 | select WANT_DEVICE_TREE |
14cf11af | 218 | |
14cf11af PM |
219 | config E200 |
220 | bool "Freescale e200" | |
221 | ||
14cf11af PM |
222 | endchoice |
223 | ||
224 | config POWER4_ONLY | |
225 | bool "Optimize for POWER4" | |
187a0067 | 226 | depends on PPC64 |
14cf11af PM |
227 | default n |
228 | ---help--- | |
229 | Cause the compiler to optimize for POWER4/POWER5/PPC970 processors. | |
230 | The resulting binary will not work on POWER3 or RS64 processors | |
231 | when compiled with binutils 2.15 or later. | |
232 | ||
233 | config POWER3 | |
234 | bool | |
187a0067 | 235 | depends on PPC64 |
14cf11af PM |
236 | default y if !POWER4_ONLY |
237 | ||
238 | config POWER4 | |
187a0067 | 239 | depends on PPC64 |
14cf11af PM |
240 | def_bool y |
241 | ||
08264cbc KG |
242 | config 6xx |
243 | bool | |
244 | ||
5902ebce VB |
245 | # this is temp to handle compat with arch=ppc |
246 | config 8xx | |
247 | bool | |
248 | ||
08264cbc KG |
249 | # this is temp to handle compat with arch=ppc |
250 | config 83xx | |
251 | bool | |
252 | ||
63dafe57 BB |
253 | # this is temp to handle compat with arch=ppc |
254 | config 85xx | |
255 | bool | |
256 | ||
257 | config E500 | |
258 | bool | |
259 | ||
14cf11af | 260 | config PPC_FPU |
187a0067 PM |
261 | bool |
262 | default y if PPC64 | |
14cf11af | 263 | |
4c75a6f4 BH |
264 | config PPC_DCR_NATIVE |
265 | bool | |
266 | default n | |
267 | ||
268 | config PPC_DCR_MMIO | |
269 | bool | |
270 | default n | |
271 | ||
272 | config PPC_DCR | |
273 | bool | |
274 | depends on PPC_DCR_NATIVE || PPC_DCR_MMIO | |
275 | default y | |
276 | ||
4c9d2800 BH |
277 | config PPC_OF_PLATFORM_PCI |
278 | bool | |
279 | depends on PPC64 # not supported on 32 bits yet | |
280 | default n | |
281 | ||
f6dfc805 DG |
282 | config 4xx |
283 | bool | |
284 | depends on 40x || 44x | |
285 | default y | |
286 | ||
14cf11af PM |
287 | config BOOKE |
288 | bool | |
f6dfc805 | 289 | depends on E200 || E500 || 44x |
14cf11af PM |
290 | default y |
291 | ||
292 | config FSL_BOOKE | |
293 | bool | |
294 | depends on E200 || E500 | |
295 | default y | |
296 | ||
297 | config PTE_64BIT | |
298 | bool | |
299 | depends on 44x || E500 | |
300 | default y if 44x | |
301 | default y if E500 && PHYS_64BIT | |
302 | ||
303 | config PHYS_64BIT | |
304 | bool 'Large physical address support' if E500 | |
305 | depends on 44x || E500 | |
3d1ea8e8 | 306 | select RESOURCES_64BIT |
14cf11af PM |
307 | default y if 44x |
308 | ---help--- | |
309 | This option enables kernel support for larger than 32-bit physical | |
310 | addresses. This features is not be available on all e500 cores. | |
311 | ||
312 | If in doubt, say N here. | |
313 | ||
314 | config ALTIVEC | |
315 | bool "AltiVec Support" | |
08264cbc | 316 | depends on CLASSIC32 || POWER4 |
14cf11af PM |
317 | ---help--- |
318 | This option enables kernel support for the Altivec extensions to the | |
319 | PowerPC processor. The kernel currently supports saving and restoring | |
320 | altivec registers, and turning on the 'altivec enable' bit so user | |
321 | processes can execute altivec instructions. | |
322 | ||
323 | This option is only usefully if you have a processor that supports | |
324 | altivec (G4, otherwise known as 74xx series), but does not have | |
325 | any affect on a non-altivec cpu (it does, however add code to the | |
326 | kernel). | |
327 | ||
328 | If in doubt, say Y here. | |
329 | ||
330 | config SPE | |
331 | bool "SPE Support" | |
332 | depends on E200 || E500 | |
63dafe57 | 333 | default y |
14cf11af PM |
334 | ---help--- |
335 | This option enables kernel support for the Signal Processing | |
336 | Extensions (SPE) to the PowerPC processor. The kernel currently | |
337 | supports saving and restoring SPE registers, and turning on the | |
338 | 'spe enable' bit so user processes can execute SPE instructions. | |
339 | ||
340 | This option is only useful if you have a processor that supports | |
341 | SPE (e500, otherwise known as 85xx series), but does not have any | |
342 | effect on a non-spe cpu (it does, however add code to the kernel). | |
343 | ||
344 | If in doubt, say Y here. | |
345 | ||
346 | config PPC_STD_MMU | |
347 | bool | |
348 | depends on 6xx || POWER3 || POWER4 || PPC64 | |
349 | default y | |
350 | ||
351 | config PPC_STD_MMU_32 | |
352 | def_bool y | |
353 | depends on PPC_STD_MMU && PPC32 | |
354 | ||
d0f13e3c BH |
355 | config PPC_MM_SLICES |
356 | bool | |
357 | default y if HUGETLB_PAGE | |
358 | default n | |
359 | ||
c6622f63 PM |
360 | config VIRT_CPU_ACCOUNTING |
361 | bool "Deterministic task and CPU time accounting" | |
362 | depends on PPC64 | |
363 | default y | |
364 | help | |
365 | Select this option to enable more accurate task and CPU time | |
366 | accounting. This is done by reading a CPU counter on each | |
367 | kernel entry and exit and on transitions within the kernel | |
368 | between system, softirq and hardirq state, so there is a | |
369 | small performance impact. This also enables accounting of | |
370 | stolen time on logically-partitioned systems running on | |
371 | IBM POWER5-based machines. | |
372 | ||
373 | If in doubt, say Y here. | |
374 | ||
14cf11af PM |
375 | config SMP |
376 | depends on PPC_STD_MMU | |
377 | bool "Symmetric multi-processing support" | |
378 | ---help--- | |
379 | This enables support for systems with more than one CPU. If you have | |
380 | a system with only one CPU, say N. If you have a system with more | |
381 | than one CPU, say Y. Note that the kernel does not currently | |
382 | support SMP machines with 603/603e/603ev or PPC750 ("G3") processors | |
383 | since they have inadequate hardware support for multiprocessor | |
384 | operation. | |
385 | ||
386 | If you say N here, the kernel will run on single and multiprocessor | |
387 | machines, but will use only one CPU of a multiprocessor machine. If | |
388 | you say Y here, the kernel will run on single-processor machines. | |
389 | On a single-processor machine, the kernel will run faster if you say | |
390 | N here. | |
391 | ||
392 | If you don't know what to do here, say N. | |
393 | ||
394 | config NR_CPUS | |
e8a167ac | 395 | int "Maximum number of CPUs (2-128)" |
14cf11af PM |
396 | range 2 128 |
397 | depends on SMP | |
398 | default "32" if PPC64 | |
399 | default "4" | |
400 | ||
401 | config NOT_COHERENT_CACHE | |
402 | bool | |
403 | depends on 4xx || 8xx || E200 | |
404 | default y | |
405 | endmenu | |
406 | ||
407 | source "init/Kconfig" | |
408 | ||
4330f5da | 409 | source "arch/powerpc/platforms/Kconfig" |
14cf11af | 410 | |
14cf11af PM |
411 | menu "Kernel options" |
412 | ||
413 | config HIGHMEM | |
414 | bool "High memory support" | |
415 | depends on PPC32 | |
416 | ||
417 | source kernel/Kconfig.hz | |
418 | source kernel/Kconfig.preempt | |
419 | source "fs/Kconfig.binfmt" | |
420 | ||
421 | # We optimistically allocate largepages from the VM, so make the limit | |
422 | # large enough (16MB). This badly named config option is actually | |
423 | # max order + 1 | |
424 | config FORCE_MAX_ZONEORDER | |
425 | int | |
426 | depends on PPC64 | |
02864867 | 427 | default "9" if PPC_64K_PAGES |
14cf11af PM |
428 | default "13" |
429 | ||
430 | config MATH_EMULATION | |
431 | bool "Math emulation" | |
4d52719a | 432 | depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 |
14cf11af PM |
433 | ---help--- |
434 | Some PowerPC chips designed for embedded applications do not have | |
435 | a floating-point unit and therefore do not implement the | |
436 | floating-point instructions in the PowerPC instruction set. If you | |
437 | say Y here, the kernel will include code to emulate a floating-point | |
438 | unit, which will allow programs that use floating-point | |
439 | instructions to run. | |
440 | ||
441 | config IOMMU_VMERGE | |
442 | bool "Enable IOMMU virtual merging (EXPERIMENTAL)" | |
443 | depends on EXPERIMENTAL && PPC64 | |
444 | default n | |
445 | help | |
446 | Cause IO segments sent to a device for DMA to be merged virtually | |
447 | by the IOMMU when they happen to have been allocated contiguously. | |
448 | This doesn't add pressure to the IOMMU allocator. However, some | |
449 | drivers don't support getting large merged segments coming back | |
450 | from *_map_sg(). Say Y if you know the drivers you are using are | |
451 | properly handling this case. | |
452 | ||
453 | config HOTPLUG_CPU | |
454 | bool "Support for enabling/disabling CPUs" | |
455 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) | |
456 | ---help--- | |
457 | Say Y here to be able to disable and re-enable individual | |
458 | CPUs at runtime on SMP machines. | |
459 | ||
460 | Say N if you are unsure. | |
461 | ||
cc57637b YG |
462 | config ARCH_ENABLE_MEMORY_HOTPLUG |
463 | def_bool y | |
464 | ||
14cf11af PM |
465 | config KEXEC |
466 | bool "kexec system call (EXPERIMENTAL)" | |
467 | depends on PPC_MULTIPLATFORM && EXPERIMENTAL | |
468 | help | |
469 | kexec is a system call that implements the ability to shutdown your | |
470 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 471 | but it is independent of the system firmware. And like a reboot |
14cf11af PM |
472 | you can start any kernel with it, not just Linux. |
473 | ||
1f1332f7 | 474 | The name comes from the similarity to the exec system call. |
14cf11af PM |
475 | |
476 | It is an ongoing process to be certain the hardware in a machine | |
477 | is properly shutdown, so do not be surprised if this code does not | |
478 | initially work for you. It may help to enable device hotplugging | |
479 | support. As of this writing the exact hardware interface is | |
480 | strongly in flux, so no good recommendation can be made. | |
481 | ||
e8625d46 | 482 | config CRASH_DUMP |
cd9c99d7 | 483 | bool "Build a kdump crash kernel (EXPERIMENTAL)" |
e8625d46 HM |
484 | depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL |
485 | help | |
486 | Build a kernel suitable for use as a kdump capture kernel. | |
487 | The kernel will be linked at a different address than normal, and | |
488 | so can only be used for Kdump. | |
489 | ||
490 | Don't change this unless you know what you are doing. | |
491 | ||
14cf11af PM |
492 | config PPCBUG_NVRAM |
493 | bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC | |
494 | default y if PPC_PREP | |
495 | ||
496 | config IRQ_ALL_CPUS | |
497 | bool "Distribute interrupts on all CPUs by default" | |
498 | depends on SMP && !MV64360 | |
499 | help | |
500 | This option gives the kernel permission to distribute IRQs across | |
501 | multiple CPUs. Saying N here will route all IRQs to the first | |
502 | CPU. Generally saying Y is safe, although some problems have been | |
503 | reported with SMP Power Macintoshes with this option enabled. | |
504 | ||
ffa27b6b AW |
505 | config NUMA |
506 | bool "NUMA support" | |
507 | depends on PPC64 | |
508 | default y if SMP && PPC_PSERIES | |
509 | ||
c80d79d7 YG |
510 | config NODES_SHIFT |
511 | int | |
512 | default "4" | |
513 | depends on NEED_MULTIPLE_NODES | |
514 | ||
14cf11af PM |
515 | config ARCH_SELECT_MEMORY_MODEL |
516 | def_bool y | |
517 | depends on PPC64 | |
518 | ||
519 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
520 | def_bool y |
521 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 522 | |
45fb6cea | 523 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 524 | def_bool y |
9100b205 | 525 | depends on PPC64 |
14cf11af | 526 | |
45fb6cea | 527 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 528 | def_bool y |
78bde53e | 529 | depends on (SMP && PPC_PSERIES) || PPC_PS3 |
14cf11af | 530 | |
c67c3cb4 | 531 | config ARCH_POPULATES_NODE_MAP |
14cf11af | 532 | def_bool y |
c67c3cb4 MG |
533 | |
534 | source "mm/Kconfig" | |
14cf11af | 535 | |
7e9191da MK |
536 | config ARCH_MEMORY_PROBE |
537 | def_bool y | |
538 | depends on MEMORY_HOTPLUG | |
539 | ||
75167957 AW |
540 | # Some NUMA nodes have memory ranges that span |
541 | # other nodes. Even though a pfn is valid and | |
542 | # between a node's start and end pfns, it may not | |
543 | # reside on that node. See memmap_init_zone() | |
544 | # for details. | |
545 | config NODES_SPAN_OTHER_NODES | |
546 | def_bool y | |
547 | depends on NEED_MULTIPLE_NODES | |
548 | ||
3c726f8d BH |
549 | config PPC_64K_PAGES |
550 | bool "64k page size" | |
863c84b9 | 551 | depends on PPC64 |
3c726f8d BH |
552 | help |
553 | This option changes the kernel logical page size to 64k. On machines | |
98750261 KG |
554 | without processor support for 64k pages, the kernel will simulate |
555 | them by loading each individual 4k page on demand transparently, | |
556 | while on hardware with such support, it will be used to map | |
557 | normal application pages. | |
3c726f8d | 558 | |
14cf11af PM |
559 | config SCHED_SMT |
560 | bool "SMT (Hyperthreading) scheduler support" | |
561 | depends on PPC64 && SMP | |
14cf11af PM |
562 | help |
563 | SMT scheduler support improves the CPU scheduler's decision making | |
564 | when dealing with POWER5 cpus at a cost of slightly increased | |
565 | overhead in some places. If unsure say N here. | |
566 | ||
567 | config PROC_DEVICETREE | |
5f296755 PM |
568 | bool "Support for device tree in /proc" |
569 | depends on PROC_FS | |
14cf11af PM |
570 | help |
571 | This option adds a device-tree directory under /proc which contains | |
572 | an image of the device tree that the kernel copies from Open | |
5f296755 | 573 | Firmware or other boot firmware. If unsure, say Y here. |
14cf11af | 574 | |
14cf11af PM |
575 | config CMDLINE_BOOL |
576 | bool "Default bootloader kernel arguments" | |
14cf11af PM |
577 | |
578 | config CMDLINE | |
579 | string "Initial kernel command string" | |
580 | depends on CMDLINE_BOOL | |
581 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
582 | help | |
583 | On some platforms, there is currently no way for the boot loader to | |
584 | pass arguments to the kernel. For these platforms, you can supply | |
585 | some command-line options at build time by entering them here. In | |
586 | most cases you will need to specify the root device here. | |
587 | ||
588 | if !44x || BROKEN | |
589 | source kernel/power/Kconfig | |
590 | endif | |
591 | ||
592 | config SECCOMP | |
593 | bool "Enable seccomp to safely compute untrusted bytecode" | |
594 | depends on PROC_FS | |
595 | default y | |
596 | help | |
597 | This kernel feature is useful for number crunching applications | |
598 | that may need to compute untrusted bytecode during their | |
599 | execution. By using pipes or other transports made available to | |
600 | the process as file descriptors supporting the read/write | |
601 | syscalls, it's possible to isolate those applications in | |
602 | their own address space using seccomp. Once seccomp is | |
603 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
604 | and the task is only allowed to execute a few safe syscalls | |
605 | defined by each seccomp mode. | |
606 | ||
607 | If unsure, say Y. Only embedded should say N here. | |
608 | ||
270429ba SW |
609 | config WANT_DEVICE_TREE |
610 | bool | |
611 | default n | |
612 | ||
613 | config DEVICE_TREE | |
614 | string "Static device tree source file" | |
615 | depends on WANT_DEVICE_TREE | |
616 | help | |
617 | This specifies the device tree source (.dts) file to be | |
618 | compiled and included when building the bootwrapper. If a | |
619 | relative filename is given, then it will be relative to | |
620 | arch/powerpc/boot/dts. If you are not using the bootwrapper, | |
621 | or do not need to build a dts into the bootwrapper, this | |
622 | field is ignored. | |
623 | ||
624 | For example, this is required when building a cuImage target | |
625 | for an older U-Boot, which cannot pass a device tree itself. | |
626 | Such a kernel will not work with a newer U-Boot that tries to | |
627 | pass a device tree (unless you tell it not to). If your U-Boot | |
628 | does not mention a device tree in "help bootm", then use the | |
629 | cuImage target and specify a device tree here. Otherwise, use | |
630 | the uImage target and leave this field blank. | |
631 | ||
14cf11af PM |
632 | endmenu |
633 | ||
634 | config ISA_DMA_API | |
635 | bool | |
636 | default y | |
637 | ||
638 | menu "Bus options" | |
639 | ||
640 | config ISA | |
641 | bool "Support for ISA-bus hardware" | |
642 | depends on PPC_PREP || PPC_CHRP | |
f9bd170a | 643 | select PPC_I8259 |
14cf11af PM |
644 | help |
645 | Find out whether you have ISA slots on your motherboard. ISA is the | |
646 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
647 | inside your box. If you have an Apple machine, say N here; if you | |
648 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If | |
649 | you have an embedded board, consult your board documentation. | |
650 | ||
5ac6da66 CL |
651 | config ZONE_DMA |
652 | bool | |
653 | default y | |
654 | ||
14cf11af PM |
655 | config GENERIC_ISA_DMA |
656 | bool | |
657 | depends on PPC64 || POWER4 || 6xx && !CPM2 | |
658 | default y | |
659 | ||
25635c71 PM |
660 | config PPC_INDIRECT_PCI |
661 | bool | |
662 | depends on PCI | |
63dafe57 | 663 | default y if 40x || 44x |
25635c71 PM |
664 | default n |
665 | ||
4a89f7fa KG |
666 | config PPC_INDIRECT_PCI_BE |
667 | bool | |
668 | depends PPC_INDIRECT_PCI | |
669 | default n | |
670 | ||
14cf11af PM |
671 | config EISA |
672 | bool | |
673 | ||
674 | config SBUS | |
675 | bool | |
676 | ||
08264cbc KG |
677 | config FSL_SOC |
678 | bool | |
679 | ||
3e4e97f4 JL |
680 | config FSL_PCIE |
681 | bool | |
682 | depends on PPC_86xx | |
683 | ||
14cf11af PM |
684 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
685 | config MCA | |
686 | bool | |
687 | ||
688 | config PCI | |
53158620 | 689 | bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \ |
bed59275 | 690 | || PPC_MPC52xx || (EMBEDDED && (PPC_PSERIES || PPC_ISERIES)) \ |
cb9e4d10 | 691 | || MPC7448HPC2 || PPC_PS3 || PPC_HOLLY |
53158620 JL |
692 | default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx \ |
693 | && !PPC_85xx && !PPC_86xx | |
14cf11af PM |
694 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS |
695 | default PCI_QSPAN if !4xx && !CPM2 && 8xx | |
df87ef55 | 696 | select ARCH_SUPPORTS_MSI |
14cf11af PM |
697 | help |
698 | Find out whether your system includes a PCI bus. PCI is the name of | |
699 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
700 | your box. If you say Y here, the kernel will include drivers and | |
701 | infrastructure code to support PCI bus devices. | |
702 | ||
703 | config PCI_DOMAINS | |
704 | bool | |
705 | default PCI | |
706 | ||
14cf11af PM |
707 | config PCI_QSPAN |
708 | bool "QSpan PCI" | |
709 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 710 | select PPC_I8259 |
14cf11af PM |
711 | help |
712 | Say Y here if you have a system based on a Motorola 8xx-series | |
713 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
714 | ||
715 | config PCI_8260 | |
716 | bool | |
717 | depends on PCI && 8260 | |
25635c71 | 718 | select PPC_INDIRECT_PCI |
14cf11af PM |
719 | default y |
720 | ||
721 | config 8260_PCI9 | |
4a3ecc62 | 722 | bool "Enable workaround for MPC826x erratum PCI 9" |
14cf11af PM |
723 | depends on PCI_8260 && !ADS8272 |
724 | default y | |
725 | ||
726 | choice | |
4a3ecc62 | 727 | prompt "IDMA channel for PCI 9 workaround" |
14cf11af PM |
728 | depends on 8260_PCI9 |
729 | ||
730 | config 8260_PCI9_IDMA1 | |
731 | bool "IDMA1" | |
732 | ||
733 | config 8260_PCI9_IDMA2 | |
734 | bool "IDMA2" | |
735 | ||
736 | config 8260_PCI9_IDMA3 | |
737 | bool "IDMA3" | |
738 | ||
739 | config 8260_PCI9_IDMA4 | |
740 | bool "IDMA4" | |
741 | ||
742 | endchoice | |
743 | ||
bb53bb3d JM |
744 | source "drivers/pci/pcie/Kconfig" |
745 | ||
14cf11af PM |
746 | source "drivers/pci/Kconfig" |
747 | ||
748 | source "drivers/pcmcia/Kconfig" | |
749 | ||
750 | source "drivers/pci/hotplug/Kconfig" | |
751 | ||
752 | endmenu | |
753 | ||
754 | menu "Advanced setup" | |
755 | depends on PPC32 | |
756 | ||
757 | config ADVANCED_OPTIONS | |
758 | bool "Prompt for advanced kernel configuration options" | |
759 | help | |
760 | This option will enable prompting for a variety of advanced kernel | |
761 | configuration options. These options can cause the kernel to not | |
762 | work if they are set incorrectly, but can be used to optimize certain | |
763 | aspects of kernel memory management. | |
764 | ||
765 | Unless you know what you are doing, say N here. | |
766 | ||
767 | comment "Default settings for advanced configuration options are used" | |
768 | depends on !ADVANCED_OPTIONS | |
769 | ||
770 | config HIGHMEM_START_BOOL | |
771 | bool "Set high memory pool address" | |
772 | depends on ADVANCED_OPTIONS && HIGHMEM | |
773 | help | |
774 | This option allows you to set the base address of the kernel virtual | |
775 | area used to map high memory pages. This can be useful in | |
776 | optimizing the layout of kernel virtual memory. | |
777 | ||
778 | Say N here unless you know what you are doing. | |
779 | ||
780 | config HIGHMEM_START | |
781 | hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL | |
782 | default "0xfe000000" | |
783 | ||
784 | config LOWMEM_SIZE_BOOL | |
785 | bool "Set maximum low memory" | |
786 | depends on ADVANCED_OPTIONS | |
787 | help | |
788 | This option allows you to set the maximum amount of memory which | |
789 | will be used as "low memory", that is, memory which the kernel can | |
790 | access directly, without having to set up a kernel virtual mapping. | |
791 | This can be useful in optimizing the layout of kernel virtual | |
792 | memory. | |
793 | ||
794 | Say N here unless you know what you are doing. | |
795 | ||
796 | config LOWMEM_SIZE | |
797 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
798 | default "0x30000000" | |
799 | ||
800 | config KERNEL_START_BOOL | |
801 | bool "Set custom kernel base address" | |
802 | depends on ADVANCED_OPTIONS | |
803 | help | |
804 | This option allows you to set the kernel virtual address at which | |
805 | the kernel will map low memory (the kernel image will be linked at | |
806 | this address). This can be useful in optimizing the virtual memory | |
807 | layout of the system. | |
808 | ||
809 | Say N here unless you know what you are doing. | |
810 | ||
811 | config KERNEL_START | |
812 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
813 | default "0xc0000000" | |
814 | ||
815 | config TASK_SIZE_BOOL | |
816 | bool "Set custom user task size" | |
817 | depends on ADVANCED_OPTIONS | |
818 | help | |
819 | This option allows you to set the amount of virtual address space | |
820 | allocated to user tasks. This can be useful in optimizing the | |
821 | virtual memory layout of the system. | |
822 | ||
823 | Say N here unless you know what you are doing. | |
824 | ||
825 | config TASK_SIZE | |
826 | hex "Size of user task space" if TASK_SIZE_BOOL | |
827 | default "0x80000000" | |
828 | ||
829 | config CONSISTENT_START_BOOL | |
830 | bool "Set custom consistent memory pool address" | |
831 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
832 | help | |
833 | This option allows you to set the base virtual address | |
4b3f686d | 834 | of the consistent memory pool. This pool of virtual |
14cf11af PM |
835 | memory is used to make consistent memory allocations. |
836 | ||
837 | config CONSISTENT_START | |
838 | hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL | |
839 | default "0xff100000" if NOT_COHERENT_CACHE | |
840 | ||
841 | config CONSISTENT_SIZE_BOOL | |
842 | bool "Set custom consistent memory pool size" | |
843 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
844 | help | |
4b3f686d | 845 | This option allows you to set the size of the |
14cf11af PM |
846 | consistent memory pool. This pool of virtual memory |
847 | is used to make consistent memory allocations. | |
848 | ||
849 | config CONSISTENT_SIZE | |
850 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
851 | default "0x00200000" if NOT_COHERENT_CACHE | |
852 | ||
853 | config BOOT_LOAD_BOOL | |
854 | bool "Set the boot link/load address" | |
855 | depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM | |
856 | help | |
857 | This option allows you to set the initial load address of the zImage | |
858 | or zImage.initrd file. This can be useful if you are on a board | |
859 | which has a small amount of memory. | |
860 | ||
861 | Say N here unless you know what you are doing. | |
862 | ||
863 | config BOOT_LOAD | |
864 | hex "Link/load address for booting" if BOOT_LOAD_BOOL | |
865 | default "0x00400000" if 40x || 8xx || 8260 | |
866 | default "0x01000000" if 44x | |
867 | default "0x00800000" | |
868 | ||
869 | config PIN_TLB | |
870 | bool "Pinned Kernel TLBs (860 ONLY)" | |
871 | depends on ADVANCED_OPTIONS && 8xx | |
872 | endmenu | |
873 | ||
cabb5587 SR |
874 | if PPC64 |
875 | config KERNEL_START | |
876 | hex | |
eeb2d218 | 877 | default "0xc000000000000000" |
cabb5587 SR |
878 | endif |
879 | ||
14cf11af PM |
880 | source "net/Kconfig" |
881 | ||
882 | source "drivers/Kconfig" | |
883 | ||
884 | source "fs/Kconfig" | |
885 | ||
886 | # XXX source "arch/ppc/8xx_io/Kconfig" | |
887 | ||
888 | # XXX source "arch/ppc/8260_io/Kconfig" | |
889 | ||
98658538 LY |
890 | source "arch/powerpc/sysdev/qe_lib/Kconfig" |
891 | ||
14cf11af PM |
892 | source "lib/Kconfig" |
893 | ||
cd6b0762 | 894 | menu "Instrumentation Support" |
98750261 | 895 | depends on EXPERIMENTAL |
cd6b0762 | 896 | |
14cf11af PM |
897 | source "arch/powerpc/oprofile/Kconfig" |
898 | ||
cd6b0762 PP |
899 | config KPROBES |
900 | bool "Kprobes (EXPERIMENTAL)" | |
82090035 | 901 | depends on !BOOKE && !4xx && KALLSYMS && EXPERIMENTAL && MODULES |
cd6b0762 PP |
902 | help |
903 | Kprobes allows you to trap at almost any kernel address and | |
904 | execute a callback function. register_kprobe() establishes | |
905 | a probepoint and specifies the callback. Kprobes is useful | |
906 | for kernel debugging, non-intrusive instrumentation and testing. | |
907 | If in doubt, say "N". | |
908 | endmenu | |
909 | ||
14cf11af PM |
910 | source "arch/powerpc/Kconfig.debug" |
911 | ||
912 | source "security/Kconfig" | |
913 | ||
914 | config KEYS_COMPAT | |
915 | bool | |
916 | depends on COMPAT && KEYS | |
917 | default y | |
918 | ||
919 | source "crypto/Kconfig" |