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Commit | Line | Data |
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a0ae9c7c | 1 | source "arch/powerpc/platforms/Kconfig.cputype" |
17e638bc | 2 | |
14cf11af PM |
3 | config PPC32 |
4 | bool | |
5 | default y if !PPC64 | |
6 | ||
7 | config 64BIT | |
8 | bool | |
9 | default y if PPC64 | |
10 | ||
2578bfae SR |
11 | config WORD_SIZE |
12 | int | |
13 | default 64 if PPC64 | |
14 | default 32 if !PPC64 | |
15 | ||
600715dc JF |
16 | config ARCH_PHYS_ADDR_T_64BIT |
17 | def_bool PPC64 || PHYS_64BIT | |
18 | ||
14cf11af PM |
19 | config MMU |
20 | bool | |
21 | default y | |
22 | ||
aa3be5f3 TB |
23 | config GENERIC_CMOS_UPDATE |
24 | def_bool y | |
25 | ||
4a4cfe38 TB |
26 | config GENERIC_TIME_VSYSCALL |
27 | def_bool y | |
28 | ||
d831d0b8 TB |
29 | config GENERIC_CLOCKEVENTS |
30 | def_bool y | |
31 | ||
14cf11af PM |
32 | config GENERIC_HARDIRQS |
33 | bool | |
34 | default y | |
35 | ||
8e27f4da ME |
36 | config GENERIC_HARDIRQS_NO__DO_IRQ |
37 | bool | |
38 | default y | |
39 | ||
c2a7e818 | 40 | config HAVE_SETUP_PER_CPU_AREA |
e74e3962 TH |
41 | def_bool PPC64 |
42 | ||
c2a7e818 | 43 | config NEED_PER_CPU_EMBED_FIRST_CHUNK |
b32ef636 | 44 | def_bool PPC64 |
45 | ||
0d7012a9 IM |
46 | config IRQ_PER_CPU |
47 | bool | |
48 | default y | |
49 | ||
551b81f2 ME |
50 | config NR_IRQS |
51 | int "Number of virtual interrupt numbers" | |
859aefc5 | 52 | range 32 32768 |
551b81f2 ME |
53 | default "512" |
54 | help | |
55 | This defines the number of virtual interrupt numbers the kernel | |
56 | can manage. Virtual interrupt numbers are what you see in | |
57 | /proc/interrupts. If you configure your system to have too few, | |
58 | drivers will fail to load or worse - handle with care. | |
59 | ||
fd3e0bbc CH |
60 | config STACKTRACE_SUPPORT |
61 | bool | |
62 | default y | |
63 | ||
01f4b8b8 AB |
64 | config HAVE_LATENCYTOP_SUPPORT |
65 | def_bool y | |
66 | ||
945feb17 BH |
67 | config TRACE_IRQFLAGS_SUPPORT |
68 | bool | |
945feb17 BH |
69 | default y |
70 | ||
71 | config LOCKDEP_SUPPORT | |
72 | bool | |
73 | default y | |
74 | ||
14cf11af PM |
75 | config RWSEM_GENERIC_SPINLOCK |
76 | bool | |
77 | ||
78 | config RWSEM_XCHGADD_ALGORITHM | |
79 | bool | |
80 | default y | |
81 | ||
95c354fe NP |
82 | config GENERIC_LOCKBREAK |
83 | bool | |
84 | default y | |
85 | depends on SMP && PREEMPT | |
86 | ||
f0d1b0b3 DH |
87 | config ARCH_HAS_ILOG2_U32 |
88 | bool | |
ef55d53c | 89 | default y |
f0d1b0b3 DH |
90 | |
91 | config ARCH_HAS_ILOG2_U64 | |
92 | bool | |
ef55d53c | 93 | default y if 64BIT |
f0d1b0b3 | 94 | |
e779b2f9 AM |
95 | config GENERIC_HWEIGHT |
96 | bool | |
97 | default y | |
98 | ||
0a9cb46a JM |
99 | config GENERIC_FIND_NEXT_BIT |
100 | bool | |
101 | default y | |
102 | ||
b7ce3415 AV |
103 | config GENERIC_GPIO |
104 | bool | |
105 | help | |
106 | Generic GPIO API support | |
107 | ||
f057eac0 SR |
108 | config ARCH_NO_VIRT_TO_BUS |
109 | def_bool PPC64 | |
110 | ||
14cf11af PM |
111 | config PPC |
112 | bool | |
113 | default y | |
10f85f43 SR |
114 | select OF |
115 | select OF_FLATTREE | |
2b79d696 SR |
116 | select HAVE_FTRACE_MCOUNT_RECORD |
117 | select HAVE_DYNAMIC_FTRACE | |
606576ce | 118 | select HAVE_FUNCTION_TRACER |
60ce8f72 | 119 | select HAVE_FUNCTION_GRAPH_TRACER |
7444a72e | 120 | select ARCH_WANT_OPTIONAL_GPIOLIB |
ec7748b5 | 121 | select HAVE_IDE |
a1f242ff | 122 | select HAVE_IOREMAP_PROT |
58340a07 | 123 | select HAVE_EFFICIENT_UNALIGNED_ACCESS |
3f550096 | 124 | select HAVE_KPROBES |
17ce452f | 125 | select HAVE_ARCH_KGDB |
9edddaa2 | 126 | select HAVE_KRETPROBES |
dec2b0d0 | 127 | select HAVE_ARCH_TRACEHOOK |
95f72d1e | 128 | select HAVE_MEMBLOCK |
46bab4e4 | 129 | select HAVE_DMA_ATTRS |
80d3e8ab | 130 | select HAVE_DMA_API_DEBUG |
b7d7a240 | 131 | select USE_GENERIC_SMP_HELPERS if SMP |
4e491d14 | 132 | select HAVE_OPROFILE |
ee6a0932 | 133 | select HAVE_SYSCALL_WRAPPERS if PPC64 |
c2e95c6d | 134 | select GENERIC_ATOMIC64 if PPC32 |
e360adbe | 135 | select HAVE_IRQ_WORK |
cdd6c482 | 136 | select HAVE_PERF_EVENTS |
359e4284 | 137 | select HAVE_REGS_AND_STACK_ACCESS_API |
5aae8a53 | 138 | select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 |
14cf11af PM |
139 | |
140 | config EARLY_PRINTK | |
141 | bool | |
51d3082f | 142 | default y |
14cf11af PM |
143 | |
144 | config COMPAT | |
145 | bool | |
146 | default y if PPC64 | |
01e31dba | 147 | select COMPAT_BINFMT_ELF |
14cf11af PM |
148 | |
149 | config SYSVIPC_COMPAT | |
150 | bool | |
151 | depends on COMPAT && SYSVIPC | |
152 | default y | |
153 | ||
154 | # All PPC32s use generic nvram driver through ppc_md | |
155 | config GENERIC_NVRAM | |
156 | bool | |
157 | default y if PPC32 | |
158 | ||
ae1e9130 | 159 | config SCHED_OMIT_FRAME_POINTER |
14cf11af PM |
160 | bool |
161 | default y | |
162 | ||
163 | config ARCH_MAY_HAVE_PC_FDC | |
164 | bool | |
bed59275 | 165 | default !PPC_PSERIES || PCI |
14cf11af | 166 | |
08264cbc KG |
167 | config PPC_OF |
168 | def_bool y | |
169 | ||
170 | config PPC_UDBG_16550 | |
171 | bool | |
172 | default n | |
173 | ||
08264cbc KG |
174 | config GENERIC_TBSYNC |
175 | bool | |
176 | default y if PPC32 && SMP | |
177 | default n | |
178 | ||
e65e1fc2 AV |
179 | config AUDIT_ARCH |
180 | bool | |
181 | default y | |
182 | ||
73c9ceab JF |
183 | config GENERIC_BUG |
184 | bool | |
185 | default y | |
186 | depends on BUG | |
187 | ||
b3028878 | 188 | config SYS_SUPPORTS_APM_EMULATION |
58da10bb | 189 | default y if PMAC_APM_EMU |
b3028878 JB |
190 | bool |
191 | ||
f4fc4a5b KG |
192 | config DEFAULT_UIMAGE |
193 | bool | |
194 | help | |
195 | Used to allow a board to specify it wants a uImage built by default | |
196 | default n | |
197 | ||
b09c1644 SW |
198 | config REDBOOT |
199 | bool | |
200 | ||
801e4062 JB |
201 | config ARCH_HIBERNATION_POSSIBLE |
202 | bool | |
543b9fd3 JB |
203 | default y |
204 | ||
f4cb5700 JB |
205 | config ARCH_SUSPEND_POSSIBLE |
206 | def_bool y | |
4ffd6952 | 207 | depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ |
32d8ad4e | 208 | PPC_85xx || PPC_86xx || PPC_PSERIES |
f4cb5700 | 209 | |
4c75a6f4 BH |
210 | config PPC_DCR_NATIVE |
211 | bool | |
212 | default n | |
213 | ||
214 | config PPC_DCR_MMIO | |
215 | bool | |
216 | default n | |
217 | ||
218 | config PPC_DCR | |
219 | bool | |
220 | depends on PPC_DCR_NATIVE || PPC_DCR_MMIO | |
221 | default y | |
222 | ||
4c9d2800 BH |
223 | config PPC_OF_PLATFORM_PCI |
224 | bool | |
373a6da1 | 225 | depends on PCI |
4c9d2800 BH |
226 | depends on PPC64 # not supported on 32 bits yet |
227 | default n | |
228 | ||
6a11f75b AM |
229 | config ARCH_SUPPORTS_DEBUG_PAGEALLOC |
230 | def_bool y | |
231 | ||
172ae2e7 DK |
232 | config PPC_ADV_DEBUG_REGS |
233 | bool | |
234 | depends on 40x || BOOKE | |
235 | default y | |
236 | ||
237 | config PPC_ADV_DEBUG_IACS | |
238 | int | |
239 | depends on PPC_ADV_DEBUG_REGS | |
240 | default 4 if 44x | |
241 | default 2 | |
242 | ||
243 | config PPC_ADV_DEBUG_DACS | |
244 | int | |
245 | depends on PPC_ADV_DEBUG_REGS | |
246 | default 2 | |
247 | ||
248 | config PPC_ADV_DEBUG_DVCS | |
249 | int | |
250 | depends on PPC_ADV_DEBUG_REGS | |
251 | default 2 if 44x | |
252 | default 0 | |
253 | ||
254 | config PPC_ADV_DEBUG_DAC_RANGE | |
255 | bool | |
256 | depends on PPC_ADV_DEBUG_REGS && 44x | |
257 | default y | |
258 | ||
14cf11af PM |
259 | source "init/Kconfig" |
260 | ||
dc52ddc0 MH |
261 | source "kernel/Kconfig.freezer" |
262 | ||
a2d2e1ec | 263 | source "arch/powerpc/sysdev/Kconfig" |
4330f5da | 264 | source "arch/powerpc/platforms/Kconfig" |
14cf11af | 265 | |
14cf11af PM |
266 | menu "Kernel options" |
267 | ||
268 | config HIGHMEM | |
269 | bool "High memory support" | |
270 | depends on PPC32 | |
271 | ||
1ad74998 | 272 | source kernel/time/Kconfig |
14cf11af PM |
273 | source kernel/Kconfig.hz |
274 | source kernel/Kconfig.preempt | |
275 | source "fs/Kconfig.binfmt" | |
276 | ||
ba72cb8c MG |
277 | config HUGETLB_PAGE_SIZE_VARIABLE |
278 | bool | |
279 | depends on HUGETLB_PAGE | |
280 | default y | |
281 | ||
14cf11af PM |
282 | config MATH_EMULATION |
283 | bool "Math emulation" | |
4d52719a | 284 | depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 |
14cf11af PM |
285 | ---help--- |
286 | Some PowerPC chips designed for embedded applications do not have | |
287 | a floating-point unit and therefore do not implement the | |
288 | floating-point instructions in the PowerPC instruction set. If you | |
289 | say Y here, the kernel will include code to emulate a floating-point | |
290 | unit, which will allow programs that use floating-point | |
291 | instructions to run. | |
292 | ||
5dd57a13 SW |
293 | config 8XX_MINIMAL_FPEMU |
294 | bool "Minimal math emulation for 8xx" | |
295 | depends on 8xx && !MATH_EMULATION | |
296 | help | |
297 | Older arch/ppc kernels still emulated a few floating point | |
298 | instructions such as load and store, even when full math | |
299 | emulation is disabled. Say "Y" here if you want to preserve | |
300 | this behavior. | |
301 | ||
302 | It is recommended that you build a soft-float userspace instead. | |
303 | ||
fb3475e9 FT |
304 | config IOMMU_HELPER |
305 | def_bool PPC64 | |
306 | ||
ec3cf2ec BB |
307 | config SWIOTLB |
308 | bool "SWIOTLB support" | |
309 | default n | |
310 | select IOMMU_HELPER | |
311 | ---help--- | |
312 | Support for IO bounce buffering for systems without an IOMMU. | |
313 | This allows us to DMA to the full physical address space on | |
314 | platforms where the size of a physical address is larger | |
315 | than the bus address. Not all platforms support this. | |
316 | ||
14cf11af PM |
317 | config HOTPLUG_CPU |
318 | bool "Support for enabling/disabling CPUs" | |
319 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) | |
320 | ---help--- | |
321 | Say Y here to be able to disable and re-enable individual | |
322 | CPUs at runtime on SMP machines. | |
323 | ||
324 | Say N if you are unsure. | |
325 | ||
12633e80 NF |
326 | config ARCH_CPU_PROBE_RELEASE |
327 | def_bool y | |
328 | depends on HOTPLUG_CPU | |
329 | ||
cc57637b YG |
330 | config ARCH_ENABLE_MEMORY_HOTPLUG |
331 | def_bool y | |
332 | ||
a99824f3 BP |
333 | config ARCH_HAS_WALK_MEMORY |
334 | def_bool y | |
335 | ||
1482471d BP |
336 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
337 | def_bool y | |
338 | ||
14cf11af PM |
339 | config KEXEC |
340 | bool "kexec system call (EXPERIMENTAL)" | |
f933a41e | 341 | depends on (PPC_BOOK3S || FSL_BOOKE) && EXPERIMENTAL |
14cf11af PM |
342 | help |
343 | kexec is a system call that implements the ability to shutdown your | |
344 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 345 | but it is independent of the system firmware. And like a reboot |
14cf11af PM |
346 | you can start any kernel with it, not just Linux. |
347 | ||
1f1332f7 | 348 | The name comes from the similarity to the exec system call. |
14cf11af PM |
349 | |
350 | It is an ongoing process to be certain the hardware in a machine | |
351 | is properly shutdown, so do not be surprised if this code does not | |
352 | initially work for you. It may help to enable device hotplugging | |
353 | support. As of this writing the exact hardware interface is | |
354 | strongly in flux, so no good recommendation can be made. | |
355 | ||
e8625d46 | 356 | config CRASH_DUMP |
3420b5da | 357 | bool "Build a kdump crash kernel" |
f933a41e MM |
358 | depends on PPC64 || 6xx || FSL_BOOKE |
359 | select RELOCATABLE if PPC64 || FSL_BOOKE | |
e8625d46 HM |
360 | help |
361 | Build a kernel suitable for use as a kdump capture kernel. | |
54622f10 MK |
362 | The same kernel binary can be used as production kernel and dump |
363 | capture kernel. | |
e8625d46 | 364 | |
242f271c MA |
365 | config PHYP_DUMP |
366 | bool "Hypervisor-assisted dump (EXPERIMENTAL)" | |
367 | depends on PPC_PSERIES && EXPERIMENTAL | |
368 | help | |
369 | Hypervisor-assisted dump is meant to be a kdump replacement | |
370 | offering robustness and speed not possible without system | |
692105b8 | 371 | hypervisor assistance. |
242f271c MA |
372 | |
373 | If unsure, say "N" | |
374 | ||
14cf11af PM |
375 | config PPCBUG_NVRAM |
376 | bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC | |
377 | default y if PPC_PREP | |
378 | ||
379 | config IRQ_ALL_CPUS | |
380 | bool "Distribute interrupts on all CPUs by default" | |
381 | depends on SMP && !MV64360 | |
382 | help | |
383 | This option gives the kernel permission to distribute IRQs across | |
384 | multiple CPUs. Saying N here will route all IRQs to the first | |
385 | CPU. Generally saying Y is safe, although some problems have been | |
386 | reported with SMP Power Macintoshes with this option enabled. | |
387 | ||
cd015707 ME |
388 | config SPARSE_IRQ |
389 | bool "Support sparse irq numbering" | |
9ce91685 | 390 | default n |
cd015707 ME |
391 | help |
392 | This enables support for sparse irqs. This is useful for distro | |
393 | kernels that want to define a high CONFIG_NR_CPUS value but still | |
394 | want to have low kernel memory footprint on smaller machines. | |
395 | ||
396 | ( Sparse IRQs can also be beneficial on NUMA boxes, as they spread | |
397 | out the irq_desc[] array in a more NUMA-friendly way. ) | |
398 | ||
9ce91685 | 399 | If you don't know what to do here, say N. |
cd015707 | 400 | |
ffa27b6b AW |
401 | config NUMA |
402 | bool "NUMA support" | |
403 | depends on PPC64 | |
404 | default y if SMP && PPC_PSERIES | |
405 | ||
c80d79d7 YG |
406 | config NODES_SHIFT |
407 | int | |
ea55bf29 | 408 | default "8" if PPC64 |
c80d79d7 YG |
409 | default "4" |
410 | depends on NEED_MULTIPLE_NODES | |
411 | ||
ea55bf29 AB |
412 | config MAX_ACTIVE_REGIONS |
413 | int | |
414 | default "256" if PPC64 | |
415 | default "32" | |
416 | ||
14cf11af PM |
417 | config ARCH_SELECT_MEMORY_MODEL |
418 | def_bool y | |
419 | depends on PPC64 | |
420 | ||
421 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
422 | def_bool y |
423 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 424 | |
45fb6cea | 425 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 426 | def_bool y |
9100b205 | 427 | depends on PPC64 |
d29eff7b | 428 | select SPARSEMEM_VMEMMAP_ENABLE |
14cf11af | 429 | |
45fb6cea | 430 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 431 | def_bool y |
78bde53e | 432 | depends on (SMP && PPC_PSERIES) || PPC_PS3 |
14cf11af | 433 | |
c67c3cb4 | 434 | config ARCH_POPULATES_NODE_MAP |
14cf11af | 435 | def_bool y |
c67c3cb4 | 436 | |
5a1eb5c4 BH |
437 | config SYS_SUPPORTS_HUGETLBFS |
438 | def_bool y | |
439 | depends on PPC_BOOK3S_64 | |
440 | ||
c67c3cb4 | 441 | source "mm/Kconfig" |
14cf11af | 442 | |
7e9191da MK |
443 | config ARCH_MEMORY_PROBE |
444 | def_bool y | |
445 | depends on MEMORY_HOTPLUG | |
446 | ||
75167957 AW |
447 | # Some NUMA nodes have memory ranges that span |
448 | # other nodes. Even though a pfn is valid and | |
449 | # between a node's start and end pfns, it may not | |
450 | # reside on that node. See memmap_init_zone() | |
451 | # for details. | |
452 | config NODES_SPAN_OTHER_NODES | |
453 | def_bool y | |
454 | depends on NEED_MULTIPLE_NODES | |
455 | ||
16c2d476 BH |
456 | config PPC_HAS_HASH_64K |
457 | bool | |
458 | depends on PPC64 | |
459 | default n | |
460 | ||
e1240122 YT |
461 | config STDBINUTILS |
462 | bool "Using standard binutils settings" | |
463 | depends on 44x | |
464 | default y | |
465 | help | |
466 | Turning this option off allows you to select 256KB PAGE_SIZE on 44x. | |
467 | Note, that kernel will be able to run only those applications, | |
468 | which had been compiled using binutils later than 2.17.50.0.3 with | |
469 | '-zmax-page-size' set to 256K (the default is 64K). Or, if using | |
470 | the older binutils, you can patch them with a trivial patch, which | |
471 | changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. | |
472 | ||
ca9153a3 IY |
473 | choice |
474 | prompt "Page size" | |
475 | default PPC_4K_PAGES | |
3c726f8d | 476 | help |
ca9153a3 IY |
477 | Select the kernel logical page size. Increasing the page size |
478 | will reduce software overhead at each page boundary, allow | |
479 | hardware prefetch mechanisms to be more effective, and allow | |
480 | larger dma transfers increasing IO efficiency and reducing | |
481 | overhead. However the utilization of memory will increase. | |
482 | For example, each cached file will using a multiple of the | |
483 | page size to hold its contents and the difference between the | |
484 | end of file and the end of page is wasted. | |
485 | ||
486 | Some dedicated systems, such as software raid serving with | |
487 | accelerated calculations, have shown significant increases. | |
488 | ||
489 | If you configure a 64 bit kernel for 64k pages but the | |
490 | processor does not support them, then the kernel will simulate | |
491 | them with 4k pages, loading them on demand, but with the | |
492 | reduced software overhead and larger internal fragmentation. | |
493 | For the 32 bit kernel, a large page option will not be offered | |
494 | unless it is supported by the configured processor. | |
495 | ||
496 | If unsure, choose 4K_PAGES. | |
497 | ||
498 | config PPC_4K_PAGES | |
499 | bool "4k page size" | |
500 | ||
501 | config PPC_16K_PAGES | |
502 | bool "16k page size" if 44x | |
503 | ||
504 | config PPC_64K_PAGES | |
2d27cfd3 | 505 | bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 |
ca9153a3 IY |
506 | select PPC_HAS_HASH_64K if PPC_STD_MMU_64 |
507 | ||
e1240122 YT |
508 | config PPC_256K_PAGES |
509 | bool "256k page size" if 44x | |
adf213c4 | 510 | depends on !STDBINUTILS |
e1240122 YT |
511 | help |
512 | Make the page size 256k. | |
513 | ||
514 | As the ELF standard only requires alignment to support page | |
515 | sizes up to 64k, you will need to compile all of your user | |
516 | space applications with a non-standard binutils settings | |
517 | (see the STDBINUTILS description for details). | |
518 | ||
519 | Say N unless you know what you are doing. | |
520 | ||
ca9153a3 | 521 | endchoice |
3c726f8d | 522 | |
53bcddb9 SR |
523 | config FORCE_MAX_ZONEORDER |
524 | int "Maximum zone order" | |
066c4b87 BH |
525 | range 9 64 if PPC64 && PPC_64K_PAGES |
526 | default "9" if PPC64 && PPC_64K_PAGES | |
527 | range 13 64 if PPC64 && !PPC_64K_PAGES | |
528 | default "13" if PPC64 && !PPC_64K_PAGES | |
529 | range 9 64 if PPC32 && PPC_16K_PAGES | |
530 | default "9" if PPC32 && PPC_16K_PAGES | |
531 | range 7 64 if PPC32 && PPC_64K_PAGES | |
532 | default "7" if PPC32 && PPC_64K_PAGES | |
533 | range 5 64 if PPC32 && PPC_256K_PAGES | |
534 | default "5" if PPC32 && PPC_256K_PAGES | |
ebe40c5c | 535 | range 11 64 |
53bcddb9 SR |
536 | default "11" |
537 | help | |
538 | The kernel memory allocator divides physically contiguous memory | |
539 | blocks into "zones", where each zone is a power of two number of | |
540 | pages. This option selects the largest power of two that the kernel | |
541 | keeps in the memory allocator. If you need to allocate very large | |
542 | blocks of physically contiguous memory, then you may need to | |
543 | increase this value. | |
544 | ||
545 | This config option is actually maximum order plus one. For example, | |
546 | a value of 11 means that the largest free memory block is 2^10 pages. | |
547 | ||
548 | The page size is not necessarily 4KB. For example, on 64-bit | |
549 | systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep | |
550 | this in mind when choosing a value for this option. | |
551 | ||
fa28237c PM |
552 | config PPC_SUBPAGE_PROT |
553 | bool "Support setting protections for 4k subpages" | |
ca9153a3 | 554 | depends on PPC_STD_MMU_64 && PPC_64K_PAGES |
fa28237c PM |
555 | help |
556 | This option adds support for a system call to allow user programs | |
557 | to set access permissions (read/write, readonly, or no access) | |
558 | on the 4k subpages of each 64k page. | |
559 | ||
14cf11af PM |
560 | config SCHED_SMT |
561 | bool "SMT (Hyperthreading) scheduler support" | |
562 | depends on PPC64 && SMP | |
14cf11af PM |
563 | help |
564 | SMT scheduler support improves the CPU scheduler's decision making | |
565 | when dealing with POWER5 cpus at a cost of slightly increased | |
566 | overhead in some places. If unsure say N here. | |
567 | ||
14cf11af PM |
568 | config CMDLINE_BOOL |
569 | bool "Default bootloader kernel arguments" | |
14cf11af PM |
570 | |
571 | config CMDLINE | |
572 | string "Initial kernel command string" | |
573 | depends on CMDLINE_BOOL | |
574 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
575 | help | |
576 | On some platforms, there is currently no way for the boot loader to | |
577 | pass arguments to the kernel. For these platforms, you can supply | |
578 | some command-line options at build time by entering them here. In | |
579 | most cases you will need to specify the root device here. | |
580 | ||
c356aa45 GL |
581 | config EXTRA_TARGETS |
582 | string "Additional default image types" | |
583 | help | |
584 | List additional targets to be built by the bootwrapper here (separated | |
585 | by spaces). This is useful for targets that depend of device tree | |
586 | files in the .dts directory. | |
587 | ||
588 | Targets in this list will be build as part of the default build | |
589 | target, or when the user does a 'make zImage' or a | |
590 | 'make zImage.initrd'. | |
591 | ||
592 | If unsure, leave blank | |
593 | ||
14cf11af | 594 | if !44x || BROKEN |
b28f5081 JB |
595 | config ARCH_WANTS_FREEZER_CONTROL |
596 | def_bool y | |
597 | depends on ADB_PMU | |
598 | ||
14cf11af PM |
599 | source kernel/power/Kconfig |
600 | endif | |
601 | ||
602 | config SECCOMP | |
603 | bool "Enable seccomp to safely compute untrusted bytecode" | |
604 | depends on PROC_FS | |
605 | default y | |
606 | help | |
607 | This kernel feature is useful for number crunching applications | |
608 | that may need to compute untrusted bytecode during their | |
609 | execution. By using pipes or other transports made available to | |
610 | the process as file descriptors supporting the read/write | |
611 | syscalls, it's possible to isolate those applications in | |
612 | their own address space using seccomp. Once seccomp is | |
613 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
614 | and the task is only allowed to execute a few safe syscalls | |
615 | defined by each seccomp mode. | |
616 | ||
617 | If unsure, say Y. Only embedded should say N here. | |
618 | ||
619 | endmenu | |
620 | ||
621 | config ISA_DMA_API | |
622 | bool | |
373a6da1 | 623 | default !PPC_ISERIES || PCI |
14cf11af PM |
624 | |
625 | menu "Bus options" | |
626 | ||
627 | config ISA | |
628 | bool "Support for ISA-bus hardware" | |
629 | depends on PPC_PREP || PPC_CHRP | |
f9bd170a | 630 | select PPC_I8259 |
14cf11af PM |
631 | help |
632 | Find out whether you have ISA slots on your motherboard. ISA is the | |
633 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
634 | inside your box. If you have an Apple machine, say N here; if you | |
635 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If | |
636 | you have an embedded board, consult your board documentation. | |
637 | ||
5ac6da66 CL |
638 | config ZONE_DMA |
639 | bool | |
640 | default y | |
641 | ||
af407c6d FT |
642 | config NEED_DMA_MAP_STATE |
643 | def_bool (PPC64 || NOT_COHERENT_CACHE) | |
644 | ||
e32205eb FT |
645 | config NEED_SG_DMA_LENGTH |
646 | def_bool y | |
647 | ||
14cf11af PM |
648 | config GENERIC_ISA_DMA |
649 | bool | |
1927445a | 650 | depends on ISA_DMA_API |
14cf11af PM |
651 | default y |
652 | ||
25635c71 PM |
653 | config PPC_INDIRECT_PCI |
654 | bool | |
655 | depends on PCI | |
63dafe57 | 656 | default y if 40x || 44x |
25635c71 PM |
657 | default n |
658 | ||
14cf11af PM |
659 | config EISA |
660 | bool | |
661 | ||
662 | config SBUS | |
663 | bool | |
664 | ||
08264cbc KG |
665 | config FSL_SOC |
666 | bool | |
667 | ||
55c44991 RZ |
668 | config FSL_PCI |
669 | bool | |
670 | select PPC_INDIRECT_PCI | |
d0839118 | 671 | select PCI_QUIRKS |
55c44991 | 672 | |
4ffd6952 AV |
673 | config FSL_PMC |
674 | bool | |
675 | default y | |
676 | depends on SUSPEND && (PPC_85xx || PPC_86xx) | |
677 | help | |
678 | Freescale MPC85xx/MPC86xx power management controller support | |
679 | (suspend/resume). For MPC83xx see platforms/83xx/suspend.c | |
680 | ||
2a706919 SR |
681 | config 4xx_SOC |
682 | bool | |
683 | ||
acaa7aa3 | 684 | config FSL_LBC |
3ab8f2a2 RZ |
685 | bool "Freescale Local Bus support" |
686 | depends on FSL_SOC | |
acaa7aa3 | 687 | help |
3ab8f2a2 RZ |
688 | Enables reporting of errors from the Freescale local bus |
689 | controller. Also contains some common code used by | |
690 | drivers for specific local bus peripherals. | |
acaa7aa3 | 691 | |
83ff9dcf AV |
692 | config FSL_GTM |
693 | bool | |
694 | depends on PPC_83xx || QUICC_ENGINE || CPM2 | |
695 | help | |
696 | Freescale General-purpose Timers support | |
697 | ||
14cf11af PM |
698 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
699 | config MCA | |
700 | bool | |
701 | ||
b500563b JR |
702 | # Platforms that what PCI turned unconditionally just do select PCI |
703 | # in their config node. Platforms that want to choose at config | |
704 | # time should select PPC_PCI_CHOICE | |
705 | config PPC_PCI_CHOICE | |
706 | bool | |
707 | ||
14cf11af | 708 | config PCI |
b500563b JR |
709 | bool "PCI support" if PPC_PCI_CHOICE |
710 | default y if !40x && !CPM2 && !8xx && !PPC_83xx \ | |
bcc48591 | 711 | && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON |
f21f49ea | 712 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx |
14cf11af | 713 | default PCI_QSPAN if !4xx && !CPM2 && 8xx |
df87ef55 | 714 | select ARCH_SUPPORTS_MSI |
14cf11af PM |
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 | |
36e23590 MW |
722 | def_bool PCI |
723 | ||
724 | config PCI_SYSCALL | |
725 | def_bool PCI | |
14cf11af | 726 | |
14cf11af PM |
727 | config PCI_QSPAN |
728 | bool "QSpan PCI" | |
729 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 730 | select PPC_I8259 |
14cf11af PM |
731 | help |
732 | Say Y here if you have a system based on a Motorola 8xx-series | |
733 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
734 | ||
735 | config PCI_8260 | |
736 | bool | |
737 | depends on PCI && 8260 | |
25635c71 | 738 | select PPC_INDIRECT_PCI |
14cf11af PM |
739 | default y |
740 | ||
741 | config 8260_PCI9 | |
4a3ecc62 | 742 | bool "Enable workaround for MPC826x erratum PCI 9" |
e00c5498 | 743 | depends on PCI_8260 && !8272 |
14cf11af PM |
744 | default y |
745 | ||
746 | choice | |
4a3ecc62 | 747 | prompt "IDMA channel for PCI 9 workaround" |
14cf11af PM |
748 | depends on 8260_PCI9 |
749 | ||
750 | config 8260_PCI9_IDMA1 | |
751 | bool "IDMA1" | |
752 | ||
753 | config 8260_PCI9_IDMA2 | |
754 | bool "IDMA2" | |
755 | ||
756 | config 8260_PCI9_IDMA3 | |
757 | bool "IDMA3" | |
758 | ||
759 | config 8260_PCI9_IDMA4 | |
760 | bool "IDMA4" | |
761 | ||
762 | endchoice | |
763 | ||
bb53bb3d JM |
764 | source "drivers/pci/pcie/Kconfig" |
765 | ||
14cf11af PM |
766 | source "drivers/pci/Kconfig" |
767 | ||
768 | source "drivers/pcmcia/Kconfig" | |
769 | ||
770 | source "drivers/pci/hotplug/Kconfig" | |
771 | ||
f1f389d5 ZW |
772 | config HAS_RAPIDIO |
773 | bool | |
774 | default n | |
775 | ||
776 | config RAPIDIO | |
777 | bool "RapidIO support" | |
778 | depends on HAS_RAPIDIO | |
779 | help | |
780 | If you say Y here, the kernel will include drivers and | |
781 | infrastructure code to support RapidIO interconnect devices. | |
782 | ||
783 | source "drivers/rapidio/Kconfig" | |
784 | ||
14cf11af PM |
785 | endmenu |
786 | ||
787 | menu "Advanced setup" | |
788 | depends on PPC32 | |
789 | ||
790 | config ADVANCED_OPTIONS | |
791 | bool "Prompt for advanced kernel configuration options" | |
792 | help | |
793 | This option will enable prompting for a variety of advanced kernel | |
794 | configuration options. These options can cause the kernel to not | |
795 | work if they are set incorrectly, but can be used to optimize certain | |
796 | aspects of kernel memory management. | |
797 | ||
798 | Unless you know what you are doing, say N here. | |
799 | ||
800 | comment "Default settings for advanced configuration options are used" | |
801 | depends on !ADVANCED_OPTIONS | |
802 | ||
14cf11af PM |
803 | config LOWMEM_SIZE_BOOL |
804 | bool "Set maximum low memory" | |
805 | depends on ADVANCED_OPTIONS | |
806 | help | |
807 | This option allows you to set the maximum amount of memory which | |
808 | will be used as "low memory", that is, memory which the kernel can | |
809 | access directly, without having to set up a kernel virtual mapping. | |
810 | This can be useful in optimizing the layout of kernel virtual | |
811 | memory. | |
812 | ||
813 | Say N here unless you know what you are doing. | |
814 | ||
815 | config LOWMEM_SIZE | |
816 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
817 | default "0x30000000" | |
818 | ||
96051465 TP |
819 | config LOWMEM_CAM_NUM_BOOL |
820 | bool "Set number of CAMs to use to map low memory" | |
821 | depends on ADVANCED_OPTIONS && FSL_BOOKE | |
822 | help | |
823 | This option allows you to set the maximum number of CAM slots that | |
824 | will be used to map low memory. There are a limited number of slots | |
825 | available and even more limited number that will fit in the L1 MMU. | |
826 | However, using more entries will allow mapping more low memory. This | |
827 | can be useful in optimizing the layout of kernel virtual memory. | |
828 | ||
829 | Say N here unless you know what you are doing. | |
830 | ||
831 | config LOWMEM_CAM_NUM | |
9b71dbd3 | 832 | depends on FSL_BOOKE |
96051465 TP |
833 | int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL |
834 | default 3 | |
835 | ||
37dd2bad KG |
836 | config RELOCATABLE |
837 | bool "Build a relocatable kernel (EXPERIMENTAL)" | |
838 | depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
839 | help | |
840 | This builds a kernel image that is capable of running at the | |
841 | location the kernel is loaded at (some alignment restrictions may | |
842 | exist). | |
843 | ||
844 | One use is for the kexec on panic case where the recovery kernel | |
845 | must live at a different physical address than the primary | |
846 | kernel. | |
847 | ||
848 | Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address | |
849 | it has been loaded at and the compile time physical addresses | |
850 | CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START | |
851 | setting can still be useful to bootwrappers that need to know the | |
852 | load location of the kernel (eg. u-boot/mkimage). | |
853 | ||
854 | config PAGE_OFFSET_BOOL | |
855 | bool "Set custom page offset address" | |
856 | depends on ADVANCED_OPTIONS | |
857 | help | |
858 | This option allows you to set the kernel virtual address at which | |
859 | the kernel will map low memory. This can be useful in optimizing | |
860 | the virtual memory layout of the system. | |
861 | ||
862 | Say N here unless you know what you are doing. | |
863 | ||
864 | config PAGE_OFFSET | |
865 | hex "Virtual address of memory base" if PAGE_OFFSET_BOOL | |
866 | default "0xc0000000" | |
867 | ||
14cf11af PM |
868 | config KERNEL_START_BOOL |
869 | bool "Set custom kernel base address" | |
870 | depends on ADVANCED_OPTIONS | |
871 | help | |
872 | This option allows you to set the kernel virtual address at which | |
37dd2bad KG |
873 | the kernel will be loaded. Normally this should match PAGE_OFFSET |
874 | however there are times (like kdump) that one might not want them | |
875 | to be the same. | |
14cf11af PM |
876 | |
877 | Say N here unless you know what you are doing. | |
878 | ||
879 | config KERNEL_START | |
880 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
37dd2bad | 881 | default PAGE_OFFSET if PAGE_OFFSET_BOOL |
f933a41e | 882 | default "0xc2000000" if CRASH_DUMP && !RELOCATABLE |
14cf11af PM |
883 | default "0xc0000000" |
884 | ||
37dd2bad KG |
885 | config PHYSICAL_START_BOOL |
886 | bool "Set physical address where the kernel is loaded" | |
887 | depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
888 | help | |
889 | This gives the physical address where the kernel is loaded. | |
890 | ||
891 | Say N here unless you know what you are doing. | |
892 | ||
893 | config PHYSICAL_START | |
894 | hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL | |
f933a41e | 895 | default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !RELOCATABLE |
37dd2bad KG |
896 | default "0x00000000" |
897 | ||
898 | config PHYSICAL_ALIGN | |
899 | hex | |
c8f3570b | 900 | default "0x04000000" if FSL_BOOKE |
37dd2bad KG |
901 | help |
902 | This value puts the alignment restrictions on physical address | |
903 | where kernel is loaded and run from. Kernel is compiled for an | |
904 | address which meets above alignment restriction. | |
905 | ||
14cf11af PM |
906 | config TASK_SIZE_BOOL |
907 | bool "Set custom user task size" | |
908 | depends on ADVANCED_OPTIONS | |
909 | help | |
910 | This option allows you to set the amount of virtual address space | |
911 | allocated to user tasks. This can be useful in optimizing the | |
912 | virtual memory layout of the system. | |
913 | ||
914 | Say N here unless you know what you are doing. | |
915 | ||
916 | config TASK_SIZE | |
917 | hex "Size of user task space" if TASK_SIZE_BOOL | |
4d9e5510 KG |
918 | default "0x80000000" if PPC_PREP || PPC_8xx |
919 | default "0xc0000000" | |
14cf11af | 920 | |
84532a0f BH |
921 | config CONSISTENT_SIZE_BOOL |
922 | bool "Set custom consistent memory pool size" | |
923 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
924 | help | |
925 | This option allows you to set the size of the | |
926 | consistent memory pool. This pool of virtual memory | |
927 | is used to make consistent memory allocations. | |
928 | ||
929 | config CONSISTENT_SIZE | |
930 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
931 | default "0x00200000" if NOT_COHERENT_CACHE | |
932 | ||
14cf11af PM |
933 | config PIN_TLB |
934 | bool "Pinned Kernel TLBs (860 ONLY)" | |
935 | depends on ADVANCED_OPTIONS && 8xx | |
936 | endmenu | |
937 | ||
cabb5587 | 938 | if PPC64 |
549e8152 PM |
939 | config RELOCATABLE |
940 | bool "Build a relocatable kernel" | |
941 | help | |
942 | This builds a kernel image that is capable of running anywhere | |
943 | in the RMA (real memory area) at any 16k-aligned base address. | |
944 | The kernel is linked as a position-independent executable (PIE) | |
945 | and contains dynamic relocations which are processed early | |
946 | in the bootup process. | |
947 | ||
948 | One use is for the kexec on panic case where the recovery kernel | |
949 | must live at a different physical address than the primary | |
950 | kernel. | |
951 | ||
37dd2bad KG |
952 | config PAGE_OFFSET |
953 | hex | |
954 | default "0xc000000000000000" | |
cabb5587 SR |
955 | config KERNEL_START |
956 | hex | |
eeb2d218 | 957 | default "0xc000000000000000" |
37dd2bad KG |
958 | config PHYSICAL_START |
959 | hex | |
37dd2bad | 960 | default "0x00000000" |
cabb5587 SR |
961 | endif |
962 | ||
14cf11af PM |
963 | source "net/Kconfig" |
964 | ||
965 | source "drivers/Kconfig" | |
966 | ||
967 | source "fs/Kconfig" | |
968 | ||
98658538 LY |
969 | source "arch/powerpc/sysdev/qe_lib/Kconfig" |
970 | ||
14cf11af PM |
971 | source "lib/Kconfig" |
972 | ||
14cf11af PM |
973 | source "arch/powerpc/Kconfig.debug" |
974 | ||
975 | source "security/Kconfig" | |
976 | ||
977 | config KEYS_COMPAT | |
978 | bool | |
979 | depends on COMPAT && KEYS | |
980 | default y | |
981 | ||
982 | source "crypto/Kconfig" | |
6f668280 DP |
983 | |
984 | config PPC_CLOCK | |
985 | bool | |
986 | default n | |
9483a578 | 987 | select HAVE_CLK |
1088a209 SM |
988 | |
989 | config PPC_LIB_RHEAP | |
990 | bool | |
991 | ||
bbf45ba5 | 992 | source "arch/powerpc/kvm/Kconfig" |