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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 | ||
234a71a7 | 7 | config 32BIT |
8 | bool | |
9 | default y if PPC32 | |
10 | ||
14cf11af PM |
11 | config 64BIT |
12 | bool | |
13 | default y if PPC64 | |
14 | ||
2578bfae SR |
15 | config WORD_SIZE |
16 | int | |
17 | default 64 if PPC64 | |
18 | default 32 if !PPC64 | |
19 | ||
600715dc JF |
20 | config ARCH_PHYS_ADDR_T_64BIT |
21 | def_bool PPC64 || PHYS_64BIT | |
22 | ||
787d44ca FT |
23 | config ARCH_DMA_ADDR_T_64BIT |
24 | def_bool ARCH_PHYS_ADDR_T_64BIT | |
25 | ||
14cf11af PM |
26 | config MMU |
27 | bool | |
28 | default y | |
29 | ||
aa3be5f3 TB |
30 | config GENERIC_CMOS_UPDATE |
31 | def_bool y | |
32 | ||
4a4cfe38 TB |
33 | config GENERIC_TIME_VSYSCALL |
34 | def_bool y | |
35 | ||
d831d0b8 TB |
36 | config GENERIC_CLOCKEVENTS |
37 | def_bool y | |
38 | ||
14cf11af PM |
39 | config GENERIC_HARDIRQS |
40 | bool | |
41 | default y | |
42 | ||
8e27f4da ME |
43 | config GENERIC_HARDIRQS_NO__DO_IRQ |
44 | bool | |
45 | default y | |
46 | ||
c2a7e818 | 47 | config HAVE_SETUP_PER_CPU_AREA |
e74e3962 TH |
48 | def_bool PPC64 |
49 | ||
c2a7e818 | 50 | config NEED_PER_CPU_EMBED_FIRST_CHUNK |
b32ef636 | 51 | def_bool PPC64 |
52 | ||
0d7012a9 IM |
53 | config IRQ_PER_CPU |
54 | bool | |
55 | default y | |
56 | ||
551b81f2 ME |
57 | config NR_IRQS |
58 | int "Number of virtual interrupt numbers" | |
859aefc5 | 59 | range 32 32768 |
551b81f2 ME |
60 | default "512" |
61 | help | |
62 | This defines the number of virtual interrupt numbers the kernel | |
63 | can manage. Virtual interrupt numbers are what you see in | |
64 | /proc/interrupts. If you configure your system to have too few, | |
65 | drivers will fail to load or worse - handle with care. | |
66 | ||
fd3e0bbc CH |
67 | config STACKTRACE_SUPPORT |
68 | bool | |
69 | default y | |
70 | ||
01f4b8b8 AB |
71 | config HAVE_LATENCYTOP_SUPPORT |
72 | def_bool y | |
73 | ||
945feb17 BH |
74 | config TRACE_IRQFLAGS_SUPPORT |
75 | bool | |
945feb17 BH |
76 | default y |
77 | ||
78 | config LOCKDEP_SUPPORT | |
79 | bool | |
80 | default y | |
81 | ||
14cf11af PM |
82 | config RWSEM_GENERIC_SPINLOCK |
83 | bool | |
84 | ||
85 | config RWSEM_XCHGADD_ALGORITHM | |
86 | bool | |
87 | default y | |
88 | ||
95c354fe NP |
89 | config GENERIC_LOCKBREAK |
90 | bool | |
91 | default y | |
92 | depends on SMP && PREEMPT | |
93 | ||
f0d1b0b3 DH |
94 | config ARCH_HAS_ILOG2_U32 |
95 | bool | |
ef55d53c | 96 | default y |
f0d1b0b3 DH |
97 | |
98 | config ARCH_HAS_ILOG2_U64 | |
99 | bool | |
ef55d53c | 100 | default y if 64BIT |
f0d1b0b3 | 101 | |
e779b2f9 AM |
102 | config GENERIC_HWEIGHT |
103 | bool | |
104 | default y | |
105 | ||
0a9cb46a JM |
106 | config GENERIC_FIND_NEXT_BIT |
107 | bool | |
108 | default y | |
109 | ||
b7ce3415 AV |
110 | config GENERIC_GPIO |
111 | bool | |
112 | help | |
113 | Generic GPIO API support | |
114 | ||
f057eac0 SR |
115 | config ARCH_NO_VIRT_TO_BUS |
116 | def_bool PPC64 | |
117 | ||
14cf11af PM |
118 | config PPC |
119 | bool | |
120 | default y | |
10f85f43 SR |
121 | select OF |
122 | select OF_FLATTREE | |
2b79d696 SR |
123 | select HAVE_FTRACE_MCOUNT_RECORD |
124 | select HAVE_DYNAMIC_FTRACE | |
606576ce | 125 | select HAVE_FUNCTION_TRACER |
60ce8f72 | 126 | select HAVE_FUNCTION_GRAPH_TRACER |
7444a72e | 127 | select ARCH_WANT_OPTIONAL_GPIOLIB |
ec7748b5 | 128 | select HAVE_IDE |
a1f242ff | 129 | select HAVE_IOREMAP_PROT |
58340a07 | 130 | select HAVE_EFFICIENT_UNALIGNED_ACCESS |
3f550096 | 131 | select HAVE_KPROBES |
17ce452f | 132 | select HAVE_ARCH_KGDB |
9edddaa2 | 133 | select HAVE_KRETPROBES |
dec2b0d0 | 134 | select HAVE_ARCH_TRACEHOOK |
95f72d1e | 135 | select HAVE_MEMBLOCK |
46bab4e4 | 136 | select HAVE_DMA_ATTRS |
80d3e8ab | 137 | select HAVE_DMA_API_DEBUG |
b7d7a240 | 138 | select USE_GENERIC_SMP_HELPERS if SMP |
4e491d14 | 139 | select HAVE_OPROFILE |
ee6a0932 | 140 | select HAVE_SYSCALL_WRAPPERS if PPC64 |
c2e95c6d | 141 | select GENERIC_ATOMIC64 if PPC32 |
e360adbe | 142 | select HAVE_IRQ_WORK |
cdd6c482 | 143 | select HAVE_PERF_EVENTS |
359e4284 | 144 | select HAVE_REGS_AND_STACK_ACCESS_API |
5aae8a53 | 145 | select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 |
14cf11af PM |
146 | |
147 | config EARLY_PRINTK | |
148 | bool | |
51d3082f | 149 | default y |
14cf11af PM |
150 | |
151 | config COMPAT | |
152 | bool | |
153 | default y if PPC64 | |
01e31dba | 154 | select COMPAT_BINFMT_ELF |
14cf11af PM |
155 | |
156 | config SYSVIPC_COMPAT | |
157 | bool | |
158 | depends on COMPAT && SYSVIPC | |
159 | default y | |
160 | ||
161 | # All PPC32s use generic nvram driver through ppc_md | |
162 | config GENERIC_NVRAM | |
163 | bool | |
164 | default y if PPC32 | |
165 | ||
ae1e9130 | 166 | config SCHED_OMIT_FRAME_POINTER |
14cf11af PM |
167 | bool |
168 | default y | |
169 | ||
170 | config ARCH_MAY_HAVE_PC_FDC | |
171 | bool | |
bed59275 | 172 | default !PPC_PSERIES || PCI |
14cf11af | 173 | |
08264cbc KG |
174 | config PPC_OF |
175 | def_bool y | |
176 | ||
177 | config PPC_UDBG_16550 | |
178 | bool | |
179 | default n | |
180 | ||
08264cbc KG |
181 | config GENERIC_TBSYNC |
182 | bool | |
183 | default y if PPC32 && SMP | |
184 | default n | |
185 | ||
e65e1fc2 AV |
186 | config AUDIT_ARCH |
187 | bool | |
188 | default y | |
189 | ||
73c9ceab JF |
190 | config GENERIC_BUG |
191 | bool | |
192 | default y | |
193 | depends on BUG | |
194 | ||
b3028878 | 195 | config SYS_SUPPORTS_APM_EMULATION |
58da10bb | 196 | default y if PMAC_APM_EMU |
b3028878 JB |
197 | bool |
198 | ||
f4fc4a5b KG |
199 | config DEFAULT_UIMAGE |
200 | bool | |
201 | help | |
202 | Used to allow a board to specify it wants a uImage built by default | |
203 | default n | |
204 | ||
b09c1644 SW |
205 | config REDBOOT |
206 | bool | |
207 | ||
801e4062 JB |
208 | config ARCH_HIBERNATION_POSSIBLE |
209 | bool | |
543b9fd3 JB |
210 | default y |
211 | ||
f4cb5700 JB |
212 | config ARCH_SUSPEND_POSSIBLE |
213 | def_bool y | |
4ffd6952 | 214 | depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ |
32d8ad4e | 215 | PPC_85xx || PPC_86xx || PPC_PSERIES |
f4cb5700 | 216 | |
4c75a6f4 BH |
217 | config PPC_DCR_NATIVE |
218 | bool | |
219 | default n | |
220 | ||
221 | config PPC_DCR_MMIO | |
222 | bool | |
223 | default n | |
224 | ||
225 | config PPC_DCR | |
226 | bool | |
227 | depends on PPC_DCR_NATIVE || PPC_DCR_MMIO | |
228 | default y | |
229 | ||
4c9d2800 BH |
230 | config PPC_OF_PLATFORM_PCI |
231 | bool | |
373a6da1 | 232 | depends on PCI |
4c9d2800 BH |
233 | depends on PPC64 # not supported on 32 bits yet |
234 | default n | |
235 | ||
6a11f75b AM |
236 | config ARCH_SUPPORTS_DEBUG_PAGEALLOC |
237 | def_bool y | |
238 | ||
172ae2e7 DK |
239 | config PPC_ADV_DEBUG_REGS |
240 | bool | |
241 | depends on 40x || BOOKE | |
242 | default y | |
243 | ||
244 | config PPC_ADV_DEBUG_IACS | |
245 | int | |
246 | depends on PPC_ADV_DEBUG_REGS | |
247 | default 4 if 44x | |
248 | default 2 | |
249 | ||
250 | config PPC_ADV_DEBUG_DACS | |
251 | int | |
252 | depends on PPC_ADV_DEBUG_REGS | |
253 | default 2 | |
254 | ||
255 | config PPC_ADV_DEBUG_DVCS | |
256 | int | |
257 | depends on PPC_ADV_DEBUG_REGS | |
258 | default 2 if 44x | |
259 | default 0 | |
260 | ||
261 | config PPC_ADV_DEBUG_DAC_RANGE | |
262 | bool | |
263 | depends on PPC_ADV_DEBUG_REGS && 44x | |
264 | default y | |
265 | ||
14cf11af PM |
266 | source "init/Kconfig" |
267 | ||
dc52ddc0 MH |
268 | source "kernel/Kconfig.freezer" |
269 | ||
a2d2e1ec | 270 | source "arch/powerpc/sysdev/Kconfig" |
4330f5da | 271 | source "arch/powerpc/platforms/Kconfig" |
14cf11af | 272 | |
14cf11af PM |
273 | menu "Kernel options" |
274 | ||
275 | config HIGHMEM | |
276 | bool "High memory support" | |
277 | depends on PPC32 | |
278 | ||
1ad74998 | 279 | source kernel/time/Kconfig |
14cf11af PM |
280 | source kernel/Kconfig.hz |
281 | source kernel/Kconfig.preempt | |
282 | source "fs/Kconfig.binfmt" | |
283 | ||
ba72cb8c MG |
284 | config HUGETLB_PAGE_SIZE_VARIABLE |
285 | bool | |
286 | depends on HUGETLB_PAGE | |
287 | default y | |
288 | ||
14cf11af PM |
289 | config MATH_EMULATION |
290 | bool "Math emulation" | |
4d52719a | 291 | depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 |
14cf11af PM |
292 | ---help--- |
293 | Some PowerPC chips designed for embedded applications do not have | |
294 | a floating-point unit and therefore do not implement the | |
295 | floating-point instructions in the PowerPC instruction set. If you | |
296 | say Y here, the kernel will include code to emulate a floating-point | |
297 | unit, which will allow programs that use floating-point | |
298 | instructions to run. | |
299 | ||
5dd57a13 SW |
300 | config 8XX_MINIMAL_FPEMU |
301 | bool "Minimal math emulation for 8xx" | |
302 | depends on 8xx && !MATH_EMULATION | |
303 | help | |
304 | Older arch/ppc kernels still emulated a few floating point | |
305 | instructions such as load and store, even when full math | |
306 | emulation is disabled. Say "Y" here if you want to preserve | |
307 | this behavior. | |
308 | ||
309 | It is recommended that you build a soft-float userspace instead. | |
310 | ||
fb3475e9 FT |
311 | config IOMMU_HELPER |
312 | def_bool PPC64 | |
313 | ||
ec3cf2ec BB |
314 | config SWIOTLB |
315 | bool "SWIOTLB support" | |
316 | default n | |
317 | select IOMMU_HELPER | |
318 | ---help--- | |
319 | Support for IO bounce buffering for systems without an IOMMU. | |
320 | This allows us to DMA to the full physical address space on | |
321 | platforms where the size of a physical address is larger | |
322 | than the bus address. Not all platforms support this. | |
323 | ||
14cf11af PM |
324 | config HOTPLUG_CPU |
325 | bool "Support for enabling/disabling CPUs" | |
326 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) | |
327 | ---help--- | |
328 | Say Y here to be able to disable and re-enable individual | |
329 | CPUs at runtime on SMP machines. | |
330 | ||
331 | Say N if you are unsure. | |
332 | ||
12633e80 NF |
333 | config ARCH_CPU_PROBE_RELEASE |
334 | def_bool y | |
335 | depends on HOTPLUG_CPU | |
336 | ||
cc57637b YG |
337 | config ARCH_ENABLE_MEMORY_HOTPLUG |
338 | def_bool y | |
339 | ||
a99824f3 BP |
340 | config ARCH_HAS_WALK_MEMORY |
341 | def_bool y | |
342 | ||
1482471d BP |
343 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
344 | def_bool y | |
345 | ||
14cf11af PM |
346 | config KEXEC |
347 | bool "kexec system call (EXPERIMENTAL)" | |
f933a41e | 348 | depends on (PPC_BOOK3S || FSL_BOOKE) && EXPERIMENTAL |
14cf11af PM |
349 | help |
350 | kexec is a system call that implements the ability to shutdown your | |
351 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 352 | but it is independent of the system firmware. And like a reboot |
14cf11af PM |
353 | you can start any kernel with it, not just Linux. |
354 | ||
1f1332f7 | 355 | The name comes from the similarity to the exec system call. |
14cf11af PM |
356 | |
357 | It is an ongoing process to be certain the hardware in a machine | |
358 | is properly shutdown, so do not be surprised if this code does not | |
359 | initially work for you. It may help to enable device hotplugging | |
360 | support. As of this writing the exact hardware interface is | |
361 | strongly in flux, so no good recommendation can be made. | |
362 | ||
e8625d46 | 363 | config CRASH_DUMP |
3420b5da | 364 | bool "Build a kdump crash kernel" |
f933a41e MM |
365 | depends on PPC64 || 6xx || FSL_BOOKE |
366 | select RELOCATABLE if PPC64 || FSL_BOOKE | |
e8625d46 HM |
367 | help |
368 | Build a kernel suitable for use as a kdump capture kernel. | |
54622f10 MK |
369 | The same kernel binary can be used as production kernel and dump |
370 | capture kernel. | |
e8625d46 | 371 | |
242f271c MA |
372 | config PHYP_DUMP |
373 | bool "Hypervisor-assisted dump (EXPERIMENTAL)" | |
374 | depends on PPC_PSERIES && EXPERIMENTAL | |
375 | help | |
376 | Hypervisor-assisted dump is meant to be a kdump replacement | |
377 | offering robustness and speed not possible without system | |
692105b8 | 378 | hypervisor assistance. |
242f271c MA |
379 | |
380 | If unsure, say "N" | |
381 | ||
14cf11af PM |
382 | config PPCBUG_NVRAM |
383 | bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC | |
384 | default y if PPC_PREP | |
385 | ||
386 | config IRQ_ALL_CPUS | |
387 | bool "Distribute interrupts on all CPUs by default" | |
388 | depends on SMP && !MV64360 | |
389 | help | |
390 | This option gives the kernel permission to distribute IRQs across | |
391 | multiple CPUs. Saying N here will route all IRQs to the first | |
392 | CPU. Generally saying Y is safe, although some problems have been | |
393 | reported with SMP Power Macintoshes with this option enabled. | |
394 | ||
cd015707 ME |
395 | config SPARSE_IRQ |
396 | bool "Support sparse irq numbering" | |
9ce91685 | 397 | default n |
cd015707 ME |
398 | help |
399 | This enables support for sparse irqs. This is useful for distro | |
400 | kernels that want to define a high CONFIG_NR_CPUS value but still | |
401 | want to have low kernel memory footprint on smaller machines. | |
402 | ||
403 | ( Sparse IRQs can also be beneficial on NUMA boxes, as they spread | |
404 | out the irq_desc[] array in a more NUMA-friendly way. ) | |
405 | ||
9ce91685 | 406 | If you don't know what to do here, say N. |
cd015707 | 407 | |
ffa27b6b AW |
408 | config NUMA |
409 | bool "NUMA support" | |
410 | depends on PPC64 | |
411 | default y if SMP && PPC_PSERIES | |
412 | ||
c80d79d7 YG |
413 | config NODES_SHIFT |
414 | int | |
ea55bf29 | 415 | default "8" if PPC64 |
c80d79d7 YG |
416 | default "4" |
417 | depends on NEED_MULTIPLE_NODES | |
418 | ||
ea55bf29 AB |
419 | config MAX_ACTIVE_REGIONS |
420 | int | |
421 | default "256" if PPC64 | |
422 | default "32" | |
423 | ||
14cf11af PM |
424 | config ARCH_SELECT_MEMORY_MODEL |
425 | def_bool y | |
426 | depends on PPC64 | |
427 | ||
428 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
429 | def_bool y |
430 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 431 | |
45fb6cea | 432 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 433 | def_bool y |
9100b205 | 434 | depends on PPC64 |
d29eff7b | 435 | select SPARSEMEM_VMEMMAP_ENABLE |
14cf11af | 436 | |
45fb6cea | 437 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 438 | def_bool y |
78bde53e | 439 | depends on (SMP && PPC_PSERIES) || PPC_PS3 |
14cf11af | 440 | |
c67c3cb4 | 441 | config ARCH_POPULATES_NODE_MAP |
14cf11af | 442 | def_bool y |
c67c3cb4 | 443 | |
5a1eb5c4 BH |
444 | config SYS_SUPPORTS_HUGETLBFS |
445 | def_bool y | |
446 | depends on PPC_BOOK3S_64 | |
447 | ||
c67c3cb4 | 448 | source "mm/Kconfig" |
14cf11af | 449 | |
7e9191da MK |
450 | config ARCH_MEMORY_PROBE |
451 | def_bool y | |
452 | depends on MEMORY_HOTPLUG | |
453 | ||
75167957 AW |
454 | # Some NUMA nodes have memory ranges that span |
455 | # other nodes. Even though a pfn is valid and | |
456 | # between a node's start and end pfns, it may not | |
457 | # reside on that node. See memmap_init_zone() | |
458 | # for details. | |
459 | config NODES_SPAN_OTHER_NODES | |
460 | def_bool y | |
461 | depends on NEED_MULTIPLE_NODES | |
462 | ||
16c2d476 BH |
463 | config PPC_HAS_HASH_64K |
464 | bool | |
465 | depends on PPC64 | |
466 | default n | |
467 | ||
e1240122 YT |
468 | config STDBINUTILS |
469 | bool "Using standard binutils settings" | |
470 | depends on 44x | |
471 | default y | |
472 | help | |
473 | Turning this option off allows you to select 256KB PAGE_SIZE on 44x. | |
474 | Note, that kernel will be able to run only those applications, | |
475 | which had been compiled using binutils later than 2.17.50.0.3 with | |
476 | '-zmax-page-size' set to 256K (the default is 64K). Or, if using | |
477 | the older binutils, you can patch them with a trivial patch, which | |
478 | changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. | |
479 | ||
ca9153a3 IY |
480 | choice |
481 | prompt "Page size" | |
482 | default PPC_4K_PAGES | |
3c726f8d | 483 | help |
ca9153a3 IY |
484 | Select the kernel logical page size. Increasing the page size |
485 | will reduce software overhead at each page boundary, allow | |
486 | hardware prefetch mechanisms to be more effective, and allow | |
487 | larger dma transfers increasing IO efficiency and reducing | |
488 | overhead. However the utilization of memory will increase. | |
489 | For example, each cached file will using a multiple of the | |
490 | page size to hold its contents and the difference between the | |
491 | end of file and the end of page is wasted. | |
492 | ||
493 | Some dedicated systems, such as software raid serving with | |
494 | accelerated calculations, have shown significant increases. | |
495 | ||
496 | If you configure a 64 bit kernel for 64k pages but the | |
497 | processor does not support them, then the kernel will simulate | |
498 | them with 4k pages, loading them on demand, but with the | |
499 | reduced software overhead and larger internal fragmentation. | |
500 | For the 32 bit kernel, a large page option will not be offered | |
501 | unless it is supported by the configured processor. | |
502 | ||
503 | If unsure, choose 4K_PAGES. | |
504 | ||
505 | config PPC_4K_PAGES | |
506 | bool "4k page size" | |
507 | ||
508 | config PPC_16K_PAGES | |
509 | bool "16k page size" if 44x | |
510 | ||
511 | config PPC_64K_PAGES | |
2d27cfd3 | 512 | bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 |
ca9153a3 IY |
513 | select PPC_HAS_HASH_64K if PPC_STD_MMU_64 |
514 | ||
e1240122 YT |
515 | config PPC_256K_PAGES |
516 | bool "256k page size" if 44x | |
adf213c4 | 517 | depends on !STDBINUTILS |
e1240122 YT |
518 | help |
519 | Make the page size 256k. | |
520 | ||
521 | As the ELF standard only requires alignment to support page | |
522 | sizes up to 64k, you will need to compile all of your user | |
523 | space applications with a non-standard binutils settings | |
524 | (see the STDBINUTILS description for details). | |
525 | ||
526 | Say N unless you know what you are doing. | |
527 | ||
ca9153a3 | 528 | endchoice |
3c726f8d | 529 | |
53bcddb9 SR |
530 | config FORCE_MAX_ZONEORDER |
531 | int "Maximum zone order" | |
066c4b87 BH |
532 | range 9 64 if PPC64 && PPC_64K_PAGES |
533 | default "9" if PPC64 && PPC_64K_PAGES | |
534 | range 13 64 if PPC64 && !PPC_64K_PAGES | |
535 | default "13" if PPC64 && !PPC_64K_PAGES | |
536 | range 9 64 if PPC32 && PPC_16K_PAGES | |
537 | default "9" if PPC32 && PPC_16K_PAGES | |
538 | range 7 64 if PPC32 && PPC_64K_PAGES | |
539 | default "7" if PPC32 && PPC_64K_PAGES | |
540 | range 5 64 if PPC32 && PPC_256K_PAGES | |
541 | default "5" if PPC32 && PPC_256K_PAGES | |
ebe40c5c | 542 | range 11 64 |
53bcddb9 SR |
543 | default "11" |
544 | help | |
545 | The kernel memory allocator divides physically contiguous memory | |
546 | blocks into "zones", where each zone is a power of two number of | |
547 | pages. This option selects the largest power of two that the kernel | |
548 | keeps in the memory allocator. If you need to allocate very large | |
549 | blocks of physically contiguous memory, then you may need to | |
550 | increase this value. | |
551 | ||
552 | This config option is actually maximum order plus one. For example, | |
553 | a value of 11 means that the largest free memory block is 2^10 pages. | |
554 | ||
555 | The page size is not necessarily 4KB. For example, on 64-bit | |
556 | systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep | |
557 | this in mind when choosing a value for this option. | |
558 | ||
fa28237c PM |
559 | config PPC_SUBPAGE_PROT |
560 | bool "Support setting protections for 4k subpages" | |
ca9153a3 | 561 | depends on PPC_STD_MMU_64 && PPC_64K_PAGES |
fa28237c PM |
562 | help |
563 | This option adds support for a system call to allow user programs | |
564 | to set access permissions (read/write, readonly, or no access) | |
565 | on the 4k subpages of each 64k page. | |
566 | ||
14cf11af PM |
567 | config SCHED_SMT |
568 | bool "SMT (Hyperthreading) scheduler support" | |
569 | depends on PPC64 && SMP | |
14cf11af PM |
570 | help |
571 | SMT scheduler support improves the CPU scheduler's decision making | |
572 | when dealing with POWER5 cpus at a cost of slightly increased | |
573 | overhead in some places. If unsure say N here. | |
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 | ||
c356aa45 GL |
588 | config EXTRA_TARGETS |
589 | string "Additional default image types" | |
590 | help | |
591 | List additional targets to be built by the bootwrapper here (separated | |
592 | by spaces). This is useful for targets that depend of device tree | |
593 | files in the .dts directory. | |
594 | ||
595 | Targets in this list will be build as part of the default build | |
596 | target, or when the user does a 'make zImage' or a | |
597 | 'make zImage.initrd'. | |
598 | ||
599 | If unsure, leave blank | |
600 | ||
14cf11af | 601 | if !44x || BROKEN |
b28f5081 JB |
602 | config ARCH_WANTS_FREEZER_CONTROL |
603 | def_bool y | |
604 | depends on ADB_PMU | |
605 | ||
14cf11af PM |
606 | source kernel/power/Kconfig |
607 | endif | |
608 | ||
609 | config SECCOMP | |
610 | bool "Enable seccomp to safely compute untrusted bytecode" | |
611 | depends on PROC_FS | |
612 | default y | |
613 | help | |
614 | This kernel feature is useful for number crunching applications | |
615 | that may need to compute untrusted bytecode during their | |
616 | execution. By using pipes or other transports made available to | |
617 | the process as file descriptors supporting the read/write | |
618 | syscalls, it's possible to isolate those applications in | |
619 | their own address space using seccomp. Once seccomp is | |
620 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
621 | and the task is only allowed to execute a few safe syscalls | |
622 | defined by each seccomp mode. | |
623 | ||
624 | If unsure, say Y. Only embedded should say N here. | |
625 | ||
626 | endmenu | |
627 | ||
628 | config ISA_DMA_API | |
629 | bool | |
373a6da1 | 630 | default !PPC_ISERIES || PCI |
14cf11af PM |
631 | |
632 | menu "Bus options" | |
633 | ||
634 | config ISA | |
635 | bool "Support for ISA-bus hardware" | |
636 | depends on PPC_PREP || PPC_CHRP | |
f9bd170a | 637 | select PPC_I8259 |
14cf11af PM |
638 | help |
639 | Find out whether you have ISA slots on your motherboard. ISA is the | |
640 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
641 | inside your box. If you have an Apple machine, say N here; if you | |
642 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If | |
643 | you have an embedded board, consult your board documentation. | |
644 | ||
5ac6da66 CL |
645 | config ZONE_DMA |
646 | bool | |
647 | default y | |
648 | ||
af407c6d FT |
649 | config NEED_DMA_MAP_STATE |
650 | def_bool (PPC64 || NOT_COHERENT_CACHE) | |
651 | ||
e32205eb FT |
652 | config NEED_SG_DMA_LENGTH |
653 | def_bool y | |
654 | ||
14cf11af PM |
655 | config GENERIC_ISA_DMA |
656 | bool | |
1927445a | 657 | depends on ISA_DMA_API |
14cf11af PM |
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 | ||
14cf11af PM |
666 | config EISA |
667 | bool | |
668 | ||
669 | config SBUS | |
670 | bool | |
671 | ||
08264cbc KG |
672 | config FSL_SOC |
673 | bool | |
674 | ||
55c44991 RZ |
675 | config FSL_PCI |
676 | bool | |
677 | select PPC_INDIRECT_PCI | |
d0839118 | 678 | select PCI_QUIRKS |
55c44991 | 679 | |
4ffd6952 AV |
680 | config FSL_PMC |
681 | bool | |
682 | default y | |
683 | depends on SUSPEND && (PPC_85xx || PPC_86xx) | |
684 | help | |
685 | Freescale MPC85xx/MPC86xx power management controller support | |
686 | (suspend/resume). For MPC83xx see platforms/83xx/suspend.c | |
687 | ||
2a706919 SR |
688 | config 4xx_SOC |
689 | bool | |
690 | ||
acaa7aa3 | 691 | config FSL_LBC |
3ab8f2a2 RZ |
692 | bool "Freescale Local Bus support" |
693 | depends on FSL_SOC | |
acaa7aa3 | 694 | help |
3ab8f2a2 RZ |
695 | Enables reporting of errors from the Freescale local bus |
696 | controller. Also contains some common code used by | |
697 | drivers for specific local bus peripherals. | |
acaa7aa3 | 698 | |
83ff9dcf AV |
699 | config FSL_GTM |
700 | bool | |
701 | depends on PPC_83xx || QUICC_ENGINE || CPM2 | |
702 | help | |
703 | Freescale General-purpose Timers support | |
704 | ||
14cf11af PM |
705 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
706 | config MCA | |
707 | bool | |
708 | ||
b500563b JR |
709 | # Platforms that what PCI turned unconditionally just do select PCI |
710 | # in their config node. Platforms that want to choose at config | |
711 | # time should select PPC_PCI_CHOICE | |
712 | config PPC_PCI_CHOICE | |
713 | bool | |
714 | ||
14cf11af | 715 | config PCI |
b500563b JR |
716 | bool "PCI support" if PPC_PCI_CHOICE |
717 | default y if !40x && !CPM2 && !8xx && !PPC_83xx \ | |
bcc48591 | 718 | && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON |
f21f49ea | 719 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx |
14cf11af | 720 | default PCI_QSPAN if !4xx && !CPM2 && 8xx |
df87ef55 | 721 | select ARCH_SUPPORTS_MSI |
14cf11af PM |
722 | help |
723 | Find out whether your system includes a PCI bus. PCI is the name of | |
724 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
725 | your box. If you say Y here, the kernel will include drivers and | |
726 | infrastructure code to support PCI bus devices. | |
727 | ||
728 | config PCI_DOMAINS | |
36e23590 MW |
729 | def_bool PCI |
730 | ||
731 | config PCI_SYSCALL | |
732 | def_bool PCI | |
14cf11af | 733 | |
14cf11af PM |
734 | config PCI_QSPAN |
735 | bool "QSpan PCI" | |
736 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 737 | select PPC_I8259 |
14cf11af PM |
738 | help |
739 | Say Y here if you have a system based on a Motorola 8xx-series | |
740 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
741 | ||
742 | config PCI_8260 | |
743 | bool | |
744 | depends on PCI && 8260 | |
25635c71 | 745 | select PPC_INDIRECT_PCI |
14cf11af PM |
746 | default y |
747 | ||
748 | config 8260_PCI9 | |
4a3ecc62 | 749 | bool "Enable workaround for MPC826x erratum PCI 9" |
e00c5498 | 750 | depends on PCI_8260 && !8272 |
14cf11af PM |
751 | default y |
752 | ||
753 | choice | |
4a3ecc62 | 754 | prompt "IDMA channel for PCI 9 workaround" |
14cf11af PM |
755 | depends on 8260_PCI9 |
756 | ||
757 | config 8260_PCI9_IDMA1 | |
758 | bool "IDMA1" | |
759 | ||
760 | config 8260_PCI9_IDMA2 | |
761 | bool "IDMA2" | |
762 | ||
763 | config 8260_PCI9_IDMA3 | |
764 | bool "IDMA3" | |
765 | ||
766 | config 8260_PCI9_IDMA4 | |
767 | bool "IDMA4" | |
768 | ||
769 | endchoice | |
770 | ||
bb53bb3d JM |
771 | source "drivers/pci/pcie/Kconfig" |
772 | ||
14cf11af PM |
773 | source "drivers/pci/Kconfig" |
774 | ||
775 | source "drivers/pcmcia/Kconfig" | |
776 | ||
777 | source "drivers/pci/hotplug/Kconfig" | |
778 | ||
f1f389d5 ZW |
779 | config HAS_RAPIDIO |
780 | bool | |
781 | default n | |
782 | ||
783 | config RAPIDIO | |
784 | bool "RapidIO support" | |
785 | depends on HAS_RAPIDIO | |
786 | help | |
787 | If you say Y here, the kernel will include drivers and | |
788 | infrastructure code to support RapidIO interconnect devices. | |
789 | ||
790 | source "drivers/rapidio/Kconfig" | |
791 | ||
14cf11af PM |
792 | endmenu |
793 | ||
794 | menu "Advanced setup" | |
795 | depends on PPC32 | |
796 | ||
797 | config ADVANCED_OPTIONS | |
798 | bool "Prompt for advanced kernel configuration options" | |
799 | help | |
800 | This option will enable prompting for a variety of advanced kernel | |
801 | configuration options. These options can cause the kernel to not | |
802 | work if they are set incorrectly, but can be used to optimize certain | |
803 | aspects of kernel memory management. | |
804 | ||
805 | Unless you know what you are doing, say N here. | |
806 | ||
807 | comment "Default settings for advanced configuration options are used" | |
808 | depends on !ADVANCED_OPTIONS | |
809 | ||
14cf11af PM |
810 | config LOWMEM_SIZE_BOOL |
811 | bool "Set maximum low memory" | |
812 | depends on ADVANCED_OPTIONS | |
813 | help | |
814 | This option allows you to set the maximum amount of memory which | |
815 | will be used as "low memory", that is, memory which the kernel can | |
816 | access directly, without having to set up a kernel virtual mapping. | |
817 | This can be useful in optimizing the layout of kernel virtual | |
818 | memory. | |
819 | ||
820 | Say N here unless you know what you are doing. | |
821 | ||
822 | config LOWMEM_SIZE | |
823 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
824 | default "0x30000000" | |
825 | ||
96051465 TP |
826 | config LOWMEM_CAM_NUM_BOOL |
827 | bool "Set number of CAMs to use to map low memory" | |
828 | depends on ADVANCED_OPTIONS && FSL_BOOKE | |
829 | help | |
830 | This option allows you to set the maximum number of CAM slots that | |
831 | will be used to map low memory. There are a limited number of slots | |
832 | available and even more limited number that will fit in the L1 MMU. | |
833 | However, using more entries will allow mapping more low memory. This | |
834 | can be useful in optimizing the layout of kernel virtual memory. | |
835 | ||
836 | Say N here unless you know what you are doing. | |
837 | ||
838 | config LOWMEM_CAM_NUM | |
9b71dbd3 | 839 | depends on FSL_BOOKE |
96051465 TP |
840 | int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL |
841 | default 3 | |
842 | ||
37dd2bad KG |
843 | config RELOCATABLE |
844 | bool "Build a relocatable kernel (EXPERIMENTAL)" | |
845 | depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
846 | help | |
847 | This builds a kernel image that is capable of running at the | |
848 | location the kernel is loaded at (some alignment restrictions may | |
849 | exist). | |
850 | ||
851 | One use is for the kexec on panic case where the recovery kernel | |
852 | must live at a different physical address than the primary | |
853 | kernel. | |
854 | ||
855 | Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address | |
856 | it has been loaded at and the compile time physical addresses | |
857 | CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START | |
858 | setting can still be useful to bootwrappers that need to know the | |
859 | load location of the kernel (eg. u-boot/mkimage). | |
860 | ||
861 | config PAGE_OFFSET_BOOL | |
862 | bool "Set custom page offset address" | |
863 | depends on ADVANCED_OPTIONS | |
864 | help | |
865 | This option allows you to set the kernel virtual address at which | |
866 | the kernel will map low memory. This can be useful in optimizing | |
867 | the virtual memory layout of the system. | |
868 | ||
869 | Say N here unless you know what you are doing. | |
870 | ||
871 | config PAGE_OFFSET | |
872 | hex "Virtual address of memory base" if PAGE_OFFSET_BOOL | |
873 | default "0xc0000000" | |
874 | ||
14cf11af PM |
875 | config KERNEL_START_BOOL |
876 | bool "Set custom kernel base address" | |
877 | depends on ADVANCED_OPTIONS | |
878 | help | |
879 | This option allows you to set the kernel virtual address at which | |
37dd2bad KG |
880 | the kernel will be loaded. Normally this should match PAGE_OFFSET |
881 | however there are times (like kdump) that one might not want them | |
882 | to be the same. | |
14cf11af PM |
883 | |
884 | Say N here unless you know what you are doing. | |
885 | ||
886 | config KERNEL_START | |
887 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
37dd2bad | 888 | default PAGE_OFFSET if PAGE_OFFSET_BOOL |
f933a41e | 889 | default "0xc2000000" if CRASH_DUMP && !RELOCATABLE |
14cf11af PM |
890 | default "0xc0000000" |
891 | ||
37dd2bad KG |
892 | config PHYSICAL_START_BOOL |
893 | bool "Set physical address where the kernel is loaded" | |
894 | depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
895 | help | |
896 | This gives the physical address where the kernel is loaded. | |
897 | ||
898 | Say N here unless you know what you are doing. | |
899 | ||
900 | config PHYSICAL_START | |
901 | hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL | |
f933a41e | 902 | default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !RELOCATABLE |
37dd2bad KG |
903 | default "0x00000000" |
904 | ||
905 | config PHYSICAL_ALIGN | |
906 | hex | |
c8f3570b | 907 | default "0x04000000" if FSL_BOOKE |
37dd2bad KG |
908 | help |
909 | This value puts the alignment restrictions on physical address | |
910 | where kernel is loaded and run from. Kernel is compiled for an | |
911 | address which meets above alignment restriction. | |
912 | ||
14cf11af PM |
913 | config TASK_SIZE_BOOL |
914 | bool "Set custom user task size" | |
915 | depends on ADVANCED_OPTIONS | |
916 | help | |
917 | This option allows you to set the amount of virtual address space | |
918 | allocated to user tasks. This can be useful in optimizing the | |
919 | virtual memory layout of the system. | |
920 | ||
921 | Say N here unless you know what you are doing. | |
922 | ||
923 | config TASK_SIZE | |
924 | hex "Size of user task space" if TASK_SIZE_BOOL | |
4d9e5510 KG |
925 | default "0x80000000" if PPC_PREP || PPC_8xx |
926 | default "0xc0000000" | |
14cf11af | 927 | |
84532a0f BH |
928 | config CONSISTENT_SIZE_BOOL |
929 | bool "Set custom consistent memory pool size" | |
930 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
931 | help | |
932 | This option allows you to set the size of the | |
933 | consistent memory pool. This pool of virtual memory | |
934 | is used to make consistent memory allocations. | |
935 | ||
936 | config CONSISTENT_SIZE | |
937 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
938 | default "0x00200000" if NOT_COHERENT_CACHE | |
939 | ||
14cf11af PM |
940 | config PIN_TLB |
941 | bool "Pinned Kernel TLBs (860 ONLY)" | |
942 | depends on ADVANCED_OPTIONS && 8xx | |
943 | endmenu | |
944 | ||
cabb5587 | 945 | if PPC64 |
549e8152 PM |
946 | config RELOCATABLE |
947 | bool "Build a relocatable kernel" | |
948 | help | |
949 | This builds a kernel image that is capable of running anywhere | |
950 | in the RMA (real memory area) at any 16k-aligned base address. | |
951 | The kernel is linked as a position-independent executable (PIE) | |
952 | and contains dynamic relocations which are processed early | |
953 | in the bootup process. | |
954 | ||
955 | One use is for the kexec on panic case where the recovery kernel | |
956 | must live at a different physical address than the primary | |
957 | kernel. | |
958 | ||
37dd2bad KG |
959 | config PAGE_OFFSET |
960 | hex | |
961 | default "0xc000000000000000" | |
cabb5587 SR |
962 | config KERNEL_START |
963 | hex | |
eeb2d218 | 964 | default "0xc000000000000000" |
37dd2bad KG |
965 | config PHYSICAL_START |
966 | hex | |
37dd2bad | 967 | default "0x00000000" |
cabb5587 SR |
968 | endif |
969 | ||
14cf11af PM |
970 | source "net/Kconfig" |
971 | ||
972 | source "drivers/Kconfig" | |
973 | ||
974 | source "fs/Kconfig" | |
975 | ||
98658538 LY |
976 | source "arch/powerpc/sysdev/qe_lib/Kconfig" |
977 | ||
14cf11af PM |
978 | source "lib/Kconfig" |
979 | ||
14cf11af PM |
980 | source "arch/powerpc/Kconfig.debug" |
981 | ||
982 | source "security/Kconfig" | |
983 | ||
984 | config KEYS_COMPAT | |
985 | bool | |
986 | depends on COMPAT && KEYS | |
987 | default y | |
988 | ||
989 | source "crypto/Kconfig" | |
6f668280 DP |
990 | |
991 | config PPC_CLOCK | |
992 | bool | |
993 | default n | |
9483a578 | 994 | select HAVE_CLK |
1088a209 SM |
995 | |
996 | config PPC_LIB_RHEAP | |
997 | bool | |
998 | ||
bbf45ba5 | 999 | source "arch/powerpc/kvm/Kconfig" |