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Commit | Line | Data |
---|---|---|
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 | ||
c2a7e818 | 30 | config HAVE_SETUP_PER_CPU_AREA |
e74e3962 TH |
31 | def_bool PPC64 |
32 | ||
c2a7e818 | 33 | config NEED_PER_CPU_EMBED_FIRST_CHUNK |
b32ef636 | 34 | def_bool PPC64 |
35 | ||
551b81f2 ME |
36 | config NR_IRQS |
37 | int "Number of virtual interrupt numbers" | |
859aefc5 | 38 | range 32 32768 |
551b81f2 ME |
39 | default "512" |
40 | help | |
41 | This defines the number of virtual interrupt numbers the kernel | |
42 | can manage. Virtual interrupt numbers are what you see in | |
43 | /proc/interrupts. If you configure your system to have too few, | |
44 | drivers will fail to load or worse - handle with care. | |
45 | ||
fd3e0bbc CH |
46 | config STACKTRACE_SUPPORT |
47 | bool | |
48 | default y | |
49 | ||
01f4b8b8 AB |
50 | config HAVE_LATENCYTOP_SUPPORT |
51 | def_bool y | |
52 | ||
945feb17 BH |
53 | config TRACE_IRQFLAGS_SUPPORT |
54 | bool | |
945feb17 BH |
55 | default y |
56 | ||
57 | config LOCKDEP_SUPPORT | |
58 | bool | |
59 | default y | |
60 | ||
14cf11af PM |
61 | config RWSEM_GENERIC_SPINLOCK |
62 | bool | |
63 | ||
64 | config RWSEM_XCHGADD_ALGORITHM | |
65 | bool | |
66 | default y | |
67 | ||
95c354fe NP |
68 | config GENERIC_LOCKBREAK |
69 | bool | |
70 | default y | |
71 | depends on SMP && PREEMPT | |
72 | ||
f0d1b0b3 DH |
73 | config ARCH_HAS_ILOG2_U32 |
74 | bool | |
ef55d53c | 75 | default y |
f0d1b0b3 DH |
76 | |
77 | config ARCH_HAS_ILOG2_U64 | |
78 | bool | |
ef55d53c | 79 | default y if 64BIT |
f0d1b0b3 | 80 | |
e779b2f9 AM |
81 | config GENERIC_HWEIGHT |
82 | bool | |
83 | default y | |
84 | ||
b7ce3415 AV |
85 | config GENERIC_GPIO |
86 | bool | |
87 | help | |
88 | Generic GPIO API support | |
89 | ||
f057eac0 SR |
90 | config ARCH_NO_VIRT_TO_BUS |
91 | def_bool PPC64 | |
92 | ||
14cf11af PM |
93 | config PPC |
94 | bool | |
95 | default y | |
10f85f43 | 96 | select OF |
e6ce1324 | 97 | select OF_EARLY_FLATTREE |
2b79d696 SR |
98 | select HAVE_FTRACE_MCOUNT_RECORD |
99 | select HAVE_DYNAMIC_FTRACE | |
606576ce | 100 | select HAVE_FUNCTION_TRACER |
60ce8f72 | 101 | select HAVE_FUNCTION_GRAPH_TRACER |
7444a72e | 102 | select ARCH_WANT_OPTIONAL_GPIOLIB |
ec7748b5 | 103 | select HAVE_IDE |
a1f242ff | 104 | select HAVE_IOREMAP_PROT |
58340a07 | 105 | select HAVE_EFFICIENT_UNALIGNED_ACCESS |
3f550096 | 106 | select HAVE_KPROBES |
17ce452f | 107 | select HAVE_ARCH_KGDB |
9edddaa2 | 108 | select HAVE_KRETPROBES |
dec2b0d0 | 109 | select HAVE_ARCH_TRACEHOOK |
95f72d1e | 110 | select HAVE_MEMBLOCK |
1d7cfe18 | 111 | select HAVE_MEMBLOCK_NODE_MAP |
46bab4e4 | 112 | select HAVE_DMA_ATTRS |
80d3e8ab | 113 | select HAVE_DMA_API_DEBUG |
b7d7a240 | 114 | select USE_GENERIC_SMP_HELPERS if SMP |
4e491d14 | 115 | select HAVE_OPROFILE |
ee6a0932 | 116 | select HAVE_SYSCALL_WRAPPERS if PPC64 |
c2e95c6d | 117 | select GENERIC_ATOMIC64 if PPC32 |
7463449b | 118 | select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE |
e360adbe | 119 | select HAVE_IRQ_WORK |
cdd6c482 | 120 | select HAVE_PERF_EVENTS |
359e4284 | 121 | select HAVE_REGS_AND_STACK_ACCESS_API |
5aae8a53 | 122 | select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 |
2604362b | 123 | select HAVE_GENERIC_HARDIRQS |
c1d7e01d | 124 | select ARCH_WANT_IPC_PARSE_VERSION |
ad5b7f13 | 125 | select SPARSE_IRQ |
2604362b | 126 | select IRQ_PER_CPU |
cc79ca69 | 127 | select IRQ_DOMAIN |
433c9c67 TG |
128 | select GENERIC_IRQ_SHOW |
129 | select GENERIC_IRQ_SHOW_LEVEL | |
e8d2c473 | 130 | select IRQ_FORCED_THREADING |
26723911 | 131 | select HAVE_RCU_TABLE_FREE if SMP |
02424d89 | 132 | select HAVE_SYSCALL_TRACEPOINTS |
e47b65b0 | 133 | select HAVE_BPF_JIT if PPC64 |
ac5f89c7 | 134 | select HAVE_ARCH_JUMP_LABEL |
df013ffb | 135 | select ARCH_HAVE_NMI_SAFE_CMPXCHG |
17e32eac | 136 | select GENERIC_SMP_IDLE_THREAD |
b9ed27df AMG |
137 | select GENERIC_CMOS_UPDATE |
138 | select GENERIC_TIME_VSYSCALL | |
139 | select GENERIC_CLOCKEVENTS | |
1629372c PM |
140 | select GENERIC_STRNCPY_FROM_USER |
141 | select GENERIC_STRNLEN_USER | |
14cf11af PM |
142 | |
143 | config EARLY_PRINTK | |
144 | bool | |
51d3082f | 145 | default y |
14cf11af PM |
146 | |
147 | config COMPAT | |
148 | bool | |
149 | default y if PPC64 | |
01e31dba | 150 | select COMPAT_BINFMT_ELF |
48b25c43 | 151 | select ARCH_WANT_OLD_COMPAT_IPC |
14cf11af PM |
152 | |
153 | config SYSVIPC_COMPAT | |
154 | bool | |
155 | depends on COMPAT && SYSVIPC | |
156 | default y | |
157 | ||
158 | # All PPC32s use generic nvram driver through ppc_md | |
159 | config GENERIC_NVRAM | |
160 | bool | |
161 | default y if PPC32 | |
162 | ||
ae1e9130 | 163 | config SCHED_OMIT_FRAME_POINTER |
14cf11af PM |
164 | bool |
165 | default y | |
166 | ||
167 | config ARCH_MAY_HAVE_PC_FDC | |
168 | bool | |
bed59275 | 169 | default !PPC_PSERIES || PCI |
14cf11af | 170 | |
08264cbc KG |
171 | config PPC_OF |
172 | def_bool y | |
173 | ||
174 | config PPC_UDBG_16550 | |
175 | bool | |
176 | default n | |
177 | ||
08264cbc KG |
178 | config GENERIC_TBSYNC |
179 | bool | |
180 | default y if PPC32 && SMP | |
181 | default n | |
182 | ||
e65e1fc2 AV |
183 | config AUDIT_ARCH |
184 | bool | |
185 | default y | |
186 | ||
73c9ceab JF |
187 | config GENERIC_BUG |
188 | bool | |
189 | default y | |
190 | depends on BUG | |
191 | ||
b3028878 | 192 | config SYS_SUPPORTS_APM_EMULATION |
58da10bb | 193 | default y if PMAC_APM_EMU |
b3028878 JB |
194 | bool |
195 | ||
6c5b59b9 DG |
196 | config EPAPR_BOOT |
197 | bool | |
198 | help | |
199 | Used to allow a board to specify it wants an ePAPR compliant wrapper. | |
200 | default n | |
201 | ||
f4fc4a5b KG |
202 | config DEFAULT_UIMAGE |
203 | bool | |
204 | help | |
205 | Used to allow a board to specify it wants a uImage built by default | |
206 | default n | |
207 | ||
b09c1644 SW |
208 | config REDBOOT |
209 | bool | |
210 | ||
801e4062 JB |
211 | config ARCH_HIBERNATION_POSSIBLE |
212 | bool | |
543b9fd3 JB |
213 | default y |
214 | ||
f4cb5700 JB |
215 | config ARCH_SUSPEND_POSSIBLE |
216 | def_bool y | |
4ffd6952 | 217 | depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ |
d0832a75 ZC |
218 | (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \ |
219 | || 44x || 40x | |
f4cb5700 | 220 | |
4c75a6f4 BH |
221 | config PPC_DCR_NATIVE |
222 | bool | |
223 | default n | |
224 | ||
225 | config PPC_DCR_MMIO | |
226 | bool | |
227 | default n | |
228 | ||
229 | config PPC_DCR | |
230 | bool | |
231 | depends on PPC_DCR_NATIVE || PPC_DCR_MMIO | |
232 | default y | |
233 | ||
4c9d2800 BH |
234 | config PPC_OF_PLATFORM_PCI |
235 | bool | |
373a6da1 | 236 | depends on PCI |
4c9d2800 BH |
237 | depends on PPC64 # not supported on 32 bits yet |
238 | default n | |
239 | ||
6a11f75b AM |
240 | config ARCH_SUPPORTS_DEBUG_PAGEALLOC |
241 | def_bool y | |
242 | ||
8b7b80b9 AM |
243 | config ARCH_SUPPORTS_UPROBES |
244 | def_bool y | |
245 | ||
172ae2e7 DK |
246 | config PPC_ADV_DEBUG_REGS |
247 | bool | |
248 | depends on 40x || BOOKE | |
249 | default y | |
250 | ||
251 | config PPC_ADV_DEBUG_IACS | |
252 | int | |
253 | depends on PPC_ADV_DEBUG_REGS | |
254 | default 4 if 44x | |
255 | default 2 | |
256 | ||
257 | config PPC_ADV_DEBUG_DACS | |
258 | int | |
259 | depends on PPC_ADV_DEBUG_REGS | |
260 | default 2 | |
261 | ||
262 | config PPC_ADV_DEBUG_DVCS | |
263 | int | |
264 | depends on PPC_ADV_DEBUG_REGS | |
265 | default 2 if 44x | |
266 | default 0 | |
267 | ||
268 | config PPC_ADV_DEBUG_DAC_RANGE | |
269 | bool | |
270 | depends on PPC_ADV_DEBUG_REGS && 44x | |
271 | default y | |
272 | ||
14cf11af PM |
273 | source "init/Kconfig" |
274 | ||
dc52ddc0 MH |
275 | source "kernel/Kconfig.freezer" |
276 | ||
a2d2e1ec | 277 | source "arch/powerpc/sysdev/Kconfig" |
4330f5da | 278 | source "arch/powerpc/platforms/Kconfig" |
14cf11af | 279 | |
14cf11af PM |
280 | menu "Kernel options" |
281 | ||
282 | config HIGHMEM | |
283 | bool "High memory support" | |
284 | depends on PPC32 | |
285 | ||
286 | source kernel/Kconfig.hz | |
287 | source kernel/Kconfig.preempt | |
288 | source "fs/Kconfig.binfmt" | |
289 | ||
ba72cb8c MG |
290 | config HUGETLB_PAGE_SIZE_VARIABLE |
291 | bool | |
292 | depends on HUGETLB_PAGE | |
293 | default y | |
294 | ||
14cf11af PM |
295 | config MATH_EMULATION |
296 | bool "Math emulation" | |
4d52719a | 297 | depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 |
14cf11af PM |
298 | ---help--- |
299 | Some PowerPC chips designed for embedded applications do not have | |
300 | a floating-point unit and therefore do not implement the | |
301 | floating-point instructions in the PowerPC instruction set. If you | |
302 | say Y here, the kernel will include code to emulate a floating-point | |
303 | unit, which will allow programs that use floating-point | |
304 | instructions to run. | |
305 | ||
5dd57a13 SW |
306 | config 8XX_MINIMAL_FPEMU |
307 | bool "Minimal math emulation for 8xx" | |
308 | depends on 8xx && !MATH_EMULATION | |
309 | help | |
310 | Older arch/ppc kernels still emulated a few floating point | |
311 | instructions such as load and store, even when full math | |
312 | emulation is disabled. Say "Y" here if you want to preserve | |
313 | this behavior. | |
314 | ||
315 | It is recommended that you build a soft-float userspace instead. | |
316 | ||
fb3475e9 FT |
317 | config IOMMU_HELPER |
318 | def_bool PPC64 | |
319 | ||
ec3cf2ec BB |
320 | config SWIOTLB |
321 | bool "SWIOTLB support" | |
322 | default n | |
323 | select IOMMU_HELPER | |
324 | ---help--- | |
325 | Support for IO bounce buffering for systems without an IOMMU. | |
326 | This allows us to DMA to the full physical address space on | |
327 | platforms where the size of a physical address is larger | |
328 | than the bus address. Not all platforms support this. | |
329 | ||
14cf11af PM |
330 | config HOTPLUG_CPU |
331 | bool "Support for enabling/disabling CPUs" | |
d0832a75 ZC |
332 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || \ |
333 | PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC)) | |
14cf11af PM |
334 | ---help--- |
335 | Say Y here to be able to disable and re-enable individual | |
336 | CPUs at runtime on SMP machines. | |
337 | ||
338 | Say N if you are unsure. | |
339 | ||
12633e80 NF |
340 | config ARCH_CPU_PROBE_RELEASE |
341 | def_bool y | |
342 | depends on HOTPLUG_CPU | |
343 | ||
cc57637b YG |
344 | config ARCH_ENABLE_MEMORY_HOTPLUG |
345 | def_bool y | |
346 | ||
a99824f3 BP |
347 | config ARCH_HAS_WALK_MEMORY |
348 | def_bool y | |
349 | ||
1482471d BP |
350 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
351 | def_bool y | |
352 | ||
14cf11af PM |
353 | config KEXEC |
354 | bool "kexec system call (EXPERIMENTAL)" | |
68343020 | 355 | depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) && EXPERIMENTAL |
14cf11af PM |
356 | help |
357 | kexec is a system call that implements the ability to shutdown your | |
358 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 359 | but it is independent of the system firmware. And like a reboot |
14cf11af PM |
360 | you can start any kernel with it, not just Linux. |
361 | ||
1f1332f7 | 362 | The name comes from the similarity to the exec system call. |
14cf11af PM |
363 | |
364 | It is an ongoing process to be certain the hardware in a machine | |
365 | is properly shutdown, so do not be surprised if this code does not | |
366 | initially work for you. It may help to enable device hotplugging | |
367 | support. As of this writing the exact hardware interface is | |
368 | strongly in flux, so no good recommendation can be made. | |
369 | ||
e8625d46 | 370 | config CRASH_DUMP |
3420b5da | 371 | bool "Build a kdump crash kernel" |
47da4219 | 372 | depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) |
5b2e478d | 373 | select RELOCATABLE if PPC64 || 44x |
0f890c8d | 374 | select DYNAMIC_MEMSTART if FSL_BOOKE |
e8625d46 HM |
375 | help |
376 | Build a kernel suitable for use as a kdump capture kernel. | |
54622f10 MK |
377 | The same kernel binary can be used as production kernel and dump |
378 | capture kernel. | |
e8625d46 | 379 | |
eb39c880 MS |
380 | config FA_DUMP |
381 | bool "Firmware-assisted dump" | |
382 | depends on PPC64 && PPC_RTAS && CRASH_DUMP | |
242f271c | 383 | help |
eb39c880 MS |
384 | A robust mechanism to get reliable kernel crash dump with |
385 | assistance from firmware. This approach does not use kexec, | |
386 | instead firmware assists in booting the kdump kernel | |
387 | while preserving memory contents. Firmware-assisted dump | |
388 | is meant to be a kdump replacement offering robustness and | |
389 | speed not possible without system firmware assistance. | |
242f271c MA |
390 | |
391 | If unsure, say "N" | |
392 | ||
14cf11af PM |
393 | config IRQ_ALL_CPUS |
394 | bool "Distribute interrupts on all CPUs by default" | |
395 | depends on SMP && !MV64360 | |
396 | help | |
397 | This option gives the kernel permission to distribute IRQs across | |
398 | multiple CPUs. Saying N here will route all IRQs to the first | |
399 | CPU. Generally saying Y is safe, although some problems have been | |
400 | reported with SMP Power Macintoshes with this option enabled. | |
401 | ||
ffa27b6b AW |
402 | config NUMA |
403 | bool "NUMA support" | |
404 | depends on PPC64 | |
405 | default y if SMP && PPC_PSERIES | |
406 | ||
c80d79d7 YG |
407 | config NODES_SHIFT |
408 | int | |
ea55bf29 | 409 | default "8" if PPC64 |
c80d79d7 YG |
410 | default "4" |
411 | depends on NEED_MULTIPLE_NODES | |
412 | ||
ea55bf29 AB |
413 | config MAX_ACTIVE_REGIONS |
414 | int | |
415 | default "256" if PPC64 | |
416 | default "32" | |
417 | ||
14cf11af PM |
418 | config ARCH_SELECT_MEMORY_MODEL |
419 | def_bool y | |
420 | depends on PPC64 | |
421 | ||
422 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
423 | def_bool y |
424 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 425 | |
45fb6cea | 426 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 427 | def_bool y |
9100b205 | 428 | depends on PPC64 |
d29eff7b | 429 | select SPARSEMEM_VMEMMAP_ENABLE |
14cf11af | 430 | |
45fb6cea | 431 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 432 | def_bool y |
78bde53e | 433 | depends on (SMP && PPC_PSERIES) || PPC_PS3 |
14cf11af | 434 | |
5a1eb5c4 | 435 | config SYS_SUPPORTS_HUGETLBFS |
41151e77 | 436 | bool |
5a1eb5c4 | 437 | |
c67c3cb4 | 438 | source "mm/Kconfig" |
14cf11af | 439 | |
7e9191da MK |
440 | config ARCH_MEMORY_PROBE |
441 | def_bool y | |
442 | depends on MEMORY_HOTPLUG | |
443 | ||
75167957 AW |
444 | # Some NUMA nodes have memory ranges that span |
445 | # other nodes. Even though a pfn is valid and | |
446 | # between a node's start and end pfns, it may not | |
447 | # reside on that node. See memmap_init_zone() | |
448 | # for details. | |
449 | config NODES_SPAN_OTHER_NODES | |
450 | def_bool y | |
451 | depends on NEED_MULTIPLE_NODES | |
452 | ||
16c2d476 BH |
453 | config PPC_HAS_HASH_64K |
454 | bool | |
455 | depends on PPC64 | |
456 | default n | |
457 | ||
e1240122 YT |
458 | config STDBINUTILS |
459 | bool "Using standard binutils settings" | |
460 | depends on 44x | |
461 | default y | |
462 | help | |
463 | Turning this option off allows you to select 256KB PAGE_SIZE on 44x. | |
464 | Note, that kernel will be able to run only those applications, | |
465 | which had been compiled using binutils later than 2.17.50.0.3 with | |
466 | '-zmax-page-size' set to 256K (the default is 64K). Or, if using | |
467 | the older binutils, you can patch them with a trivial patch, which | |
468 | changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. | |
469 | ||
ca9153a3 IY |
470 | choice |
471 | prompt "Page size" | |
472 | default PPC_4K_PAGES | |
3c726f8d | 473 | help |
ca9153a3 IY |
474 | Select the kernel logical page size. Increasing the page size |
475 | will reduce software overhead at each page boundary, allow | |
476 | hardware prefetch mechanisms to be more effective, and allow | |
477 | larger dma transfers increasing IO efficiency and reducing | |
478 | overhead. However the utilization of memory will increase. | |
479 | For example, each cached file will using a multiple of the | |
480 | page size to hold its contents and the difference between the | |
481 | end of file and the end of page is wasted. | |
482 | ||
483 | Some dedicated systems, such as software raid serving with | |
484 | accelerated calculations, have shown significant increases. | |
485 | ||
486 | If you configure a 64 bit kernel for 64k pages but the | |
487 | processor does not support them, then the kernel will simulate | |
488 | them with 4k pages, loading them on demand, but with the | |
489 | reduced software overhead and larger internal fragmentation. | |
490 | For the 32 bit kernel, a large page option will not be offered | |
491 | unless it is supported by the configured processor. | |
492 | ||
493 | If unsure, choose 4K_PAGES. | |
494 | ||
495 | config PPC_4K_PAGES | |
496 | bool "4k page size" | |
497 | ||
498 | config PPC_16K_PAGES | |
499 | bool "16k page size" if 44x | |
500 | ||
501 | config PPC_64K_PAGES | |
2d27cfd3 | 502 | bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 |
ca9153a3 IY |
503 | select PPC_HAS_HASH_64K if PPC_STD_MMU_64 |
504 | ||
e1240122 YT |
505 | config PPC_256K_PAGES |
506 | bool "256k page size" if 44x | |
adf213c4 | 507 | depends on !STDBINUTILS |
e1240122 YT |
508 | help |
509 | Make the page size 256k. | |
510 | ||
511 | As the ELF standard only requires alignment to support page | |
512 | sizes up to 64k, you will need to compile all of your user | |
513 | space applications with a non-standard binutils settings | |
514 | (see the STDBINUTILS description for details). | |
515 | ||
516 | Say N unless you know what you are doing. | |
517 | ||
ca9153a3 | 518 | endchoice |
3c726f8d | 519 | |
53bcddb9 SR |
520 | config FORCE_MAX_ZONEORDER |
521 | int "Maximum zone order" | |
066c4b87 BH |
522 | range 9 64 if PPC64 && PPC_64K_PAGES |
523 | default "9" if PPC64 && PPC_64K_PAGES | |
524 | range 13 64 if PPC64 && !PPC_64K_PAGES | |
525 | default "13" if PPC64 && !PPC_64K_PAGES | |
526 | range 9 64 if PPC32 && PPC_16K_PAGES | |
527 | default "9" if PPC32 && PPC_16K_PAGES | |
528 | range 7 64 if PPC32 && PPC_64K_PAGES | |
529 | default "7" if PPC32 && PPC_64K_PAGES | |
530 | range 5 64 if PPC32 && PPC_256K_PAGES | |
531 | default "5" if PPC32 && PPC_256K_PAGES | |
ebe40c5c | 532 | range 11 64 |
53bcddb9 SR |
533 | default "11" |
534 | help | |
535 | The kernel memory allocator divides physically contiguous memory | |
536 | blocks into "zones", where each zone is a power of two number of | |
537 | pages. This option selects the largest power of two that the kernel | |
538 | keeps in the memory allocator. If you need to allocate very large | |
539 | blocks of physically contiguous memory, then you may need to | |
540 | increase this value. | |
541 | ||
542 | This config option is actually maximum order plus one. For example, | |
543 | a value of 11 means that the largest free memory block is 2^10 pages. | |
544 | ||
545 | The page size is not necessarily 4KB. For example, on 64-bit | |
546 | systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep | |
547 | this in mind when choosing a value for this option. | |
548 | ||
fa28237c PM |
549 | config PPC_SUBPAGE_PROT |
550 | bool "Support setting protections for 4k subpages" | |
ca9153a3 | 551 | depends on PPC_STD_MMU_64 && PPC_64K_PAGES |
fa28237c PM |
552 | help |
553 | This option adds support for a system call to allow user programs | |
554 | to set access permissions (read/write, readonly, or no access) | |
555 | on the 4k subpages of each 64k page. | |
556 | ||
14cf11af PM |
557 | config SCHED_SMT |
558 | bool "SMT (Hyperthreading) scheduler support" | |
559 | depends on PPC64 && SMP | |
14cf11af PM |
560 | help |
561 | SMT scheduler support improves the CPU scheduler's decision making | |
562 | when dealing with POWER5 cpus at a cost of slightly increased | |
563 | overhead in some places. If unsure say N here. | |
564 | ||
b92a66a6 MN |
565 | config PPC_DENORMALISATION |
566 | bool "PowerPC denormalisation exception handling" | |
567 | depends on PPC_BOOK3S_64 | |
568 | default "n" | |
569 | ---help--- | |
570 | Add support for handling denormalisation of single precision | |
571 | values. Useful for bare metal only. If unsure say Y here. | |
572 | ||
14cf11af PM |
573 | config CMDLINE_BOOL |
574 | bool "Default bootloader kernel arguments" | |
14cf11af PM |
575 | |
576 | config CMDLINE | |
577 | string "Initial kernel command string" | |
578 | depends on CMDLINE_BOOL | |
579 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
580 | help | |
581 | On some platforms, there is currently no way for the boot loader to | |
582 | pass arguments to the kernel. For these platforms, you can supply | |
583 | some command-line options at build time by entering them here. In | |
584 | most cases you will need to specify the root device here. | |
585 | ||
c356aa45 GL |
586 | config EXTRA_TARGETS |
587 | string "Additional default image types" | |
588 | help | |
589 | List additional targets to be built by the bootwrapper here (separated | |
590 | by spaces). This is useful for targets that depend of device tree | |
591 | files in the .dts directory. | |
592 | ||
593 | Targets in this list will be build as part of the default build | |
594 | target, or when the user does a 'make zImage' or a | |
595 | 'make zImage.initrd'. | |
596 | ||
597 | If unsure, leave blank | |
598 | ||
b28f5081 JB |
599 | config ARCH_WANTS_FREEZER_CONTROL |
600 | def_bool y | |
601 | depends on ADB_PMU | |
602 | ||
14cf11af | 603 | source kernel/power/Kconfig |
14cf11af PM |
604 | |
605 | config SECCOMP | |
606 | bool "Enable seccomp to safely compute untrusted bytecode" | |
607 | depends on PROC_FS | |
608 | default y | |
609 | help | |
610 | This kernel feature is useful for number crunching applications | |
611 | that may need to compute untrusted bytecode during their | |
612 | execution. By using pipes or other transports made available to | |
613 | the process as file descriptors supporting the read/write | |
614 | syscalls, it's possible to isolate those applications in | |
615 | their own address space using seccomp. Once seccomp is | |
616 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
617 | and the task is only allowed to execute a few safe syscalls | |
618 | defined by each seccomp mode. | |
619 | ||
620 | If unsure, say Y. Only embedded should say N here. | |
621 | ||
622 | endmenu | |
623 | ||
624 | config ISA_DMA_API | |
625 | bool | |
3d066d77 | 626 | default PCI |
14cf11af PM |
627 | |
628 | menu "Bus options" | |
629 | ||
630 | config ISA | |
631 | bool "Support for ISA-bus hardware" | |
632 | depends on PPC_PREP || PPC_CHRP | |
f9bd170a | 633 | select PPC_I8259 |
14cf11af PM |
634 | help |
635 | Find out whether you have ISA slots on your motherboard. ISA is the | |
636 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
637 | inside your box. If you have an Apple machine, say N here; if you | |
638 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If | |
639 | you have an embedded board, consult your board documentation. | |
640 | ||
5ac6da66 CL |
641 | config ZONE_DMA |
642 | bool | |
643 | default y | |
644 | ||
af407c6d FT |
645 | config NEED_DMA_MAP_STATE |
646 | def_bool (PPC64 || NOT_COHERENT_CACHE) | |
647 | ||
e32205eb FT |
648 | config NEED_SG_DMA_LENGTH |
649 | def_bool y | |
650 | ||
14cf11af PM |
651 | config GENERIC_ISA_DMA |
652 | bool | |
1927445a | 653 | depends on ISA_DMA_API |
14cf11af PM |
654 | default y |
655 | ||
25635c71 PM |
656 | config PPC_INDIRECT_PCI |
657 | bool | |
658 | depends on PCI | |
63dafe57 | 659 | default y if 40x || 44x |
25635c71 PM |
660 | default n |
661 | ||
14cf11af PM |
662 | config EISA |
663 | bool | |
664 | ||
665 | config SBUS | |
666 | bool | |
667 | ||
08264cbc KG |
668 | config FSL_SOC |
669 | bool | |
b489da87 | 670 | select HAVE_CAN_FLEXCAN if NET && CAN |
6d4ae2dd | 671 | select PPC_CLOCK |
08264cbc | 672 | |
55c44991 RZ |
673 | config FSL_PCI |
674 | bool | |
675 | select PPC_INDIRECT_PCI | |
d0839118 | 676 | select PCI_QUIRKS |
55c44991 | 677 | |
4ffd6952 AV |
678 | config FSL_PMC |
679 | bool | |
680 | default y | |
681 | depends on SUSPEND && (PPC_85xx || PPC_86xx) | |
682 | help | |
683 | Freescale MPC85xx/MPC86xx power management controller support | |
684 | (suspend/resume). For MPC83xx see platforms/83xx/suspend.c | |
685 | ||
d164f6d4 VG |
686 | config PPC4xx_CPM |
687 | bool | |
688 | default y | |
689 | depends on SUSPEND && (44x || 40x) | |
690 | help | |
691 | PPC4xx Clock Power Management (CPM) support (suspend/resume). | |
692 | It also enables support for two different idle states (idle-wait | |
693 | and idle-doze). | |
694 | ||
2a706919 SR |
695 | config 4xx_SOC |
696 | bool | |
697 | ||
acaa7aa3 | 698 | config FSL_LBC |
3ab8f2a2 RZ |
699 | bool "Freescale Local Bus support" |
700 | depends on FSL_SOC | |
acaa7aa3 | 701 | help |
3ab8f2a2 RZ |
702 | Enables reporting of errors from the Freescale local bus |
703 | controller. Also contains some common code used by | |
704 | drivers for specific local bus peripherals. | |
acaa7aa3 | 705 | |
a20cbdef PK |
706 | config FSL_IFC |
707 | bool | |
708 | depends on FSL_SOC | |
709 | ||
83ff9dcf AV |
710 | config FSL_GTM |
711 | bool | |
712 | depends on PPC_83xx || QUICC_ENGINE || CPM2 | |
713 | help | |
714 | Freescale General-purpose Timers support | |
715 | ||
14cf11af PM |
716 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
717 | config MCA | |
718 | bool | |
719 | ||
b500563b JR |
720 | # Platforms that what PCI turned unconditionally just do select PCI |
721 | # in their config node. Platforms that want to choose at config | |
722 | # time should select PPC_PCI_CHOICE | |
723 | config PPC_PCI_CHOICE | |
724 | bool | |
725 | ||
14cf11af | 726 | config PCI |
b500563b JR |
727 | bool "PCI support" if PPC_PCI_CHOICE |
728 | default y if !40x && !CPM2 && !8xx && !PPC_83xx \ | |
bcc48591 | 729 | && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON |
f21f49ea | 730 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx |
14cf11af | 731 | default PCI_QSPAN if !4xx && !CPM2 && 8xx |
df87ef55 | 732 | select ARCH_SUPPORTS_MSI |
335b8cf7 | 733 | select GENERIC_PCI_IOMAP |
14cf11af PM |
734 | help |
735 | Find out whether your system includes a PCI bus. PCI is the name of | |
736 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
737 | your box. If you say Y here, the kernel will include drivers and | |
738 | infrastructure code to support PCI bus devices. | |
739 | ||
740 | config PCI_DOMAINS | |
36e23590 MW |
741 | def_bool PCI |
742 | ||
743 | config PCI_SYSCALL | |
744 | def_bool PCI | |
14cf11af | 745 | |
14cf11af PM |
746 | config PCI_QSPAN |
747 | bool "QSpan PCI" | |
748 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 749 | select PPC_I8259 |
14cf11af PM |
750 | help |
751 | Say Y here if you have a system based on a Motorola 8xx-series | |
752 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
753 | ||
754 | config PCI_8260 | |
755 | bool | |
756 | depends on PCI && 8260 | |
25635c71 | 757 | select PPC_INDIRECT_PCI |
14cf11af PM |
758 | default y |
759 | ||
760 | config 8260_PCI9 | |
4a3ecc62 | 761 | bool "Enable workaround for MPC826x erratum PCI 9" |
e00c5498 | 762 | depends on PCI_8260 && !8272 |
14cf11af PM |
763 | default y |
764 | ||
bb53bb3d JM |
765 | source "drivers/pci/pcie/Kconfig" |
766 | ||
14cf11af PM |
767 | source "drivers/pci/Kconfig" |
768 | ||
769 | source "drivers/pcmcia/Kconfig" | |
770 | ||
771 | source "drivers/pci/hotplug/Kconfig" | |
772 | ||
f1f389d5 ZW |
773 | config HAS_RAPIDIO |
774 | bool | |
775 | default n | |
776 | ||
777 | config RAPIDIO | |
778 | bool "RapidIO support" | |
388b78ad | 779 | depends on HAS_RAPIDIO || PCI |
f1f389d5 ZW |
780 | help |
781 | If you say Y here, the kernel will include drivers and | |
782 | infrastructure code to support RapidIO interconnect devices. | |
783 | ||
388b78ad AB |
784 | config FSL_RIO |
785 | bool "Freescale Embedded SRIO Controller support" | |
786 | depends on RAPIDIO && HAS_RAPIDIO | |
787 | default "n" | |
788 | ---help--- | |
789 | Include support for RapidIO controller on Freescale embedded | |
790 | processors (MPC8548, MPC8641, etc). | |
791 | ||
f1f389d5 ZW |
792 | source "drivers/rapidio/Kconfig" |
793 | ||
14cf11af PM |
794 | endmenu |
795 | ||
0f890c8d SP |
796 | config NONSTATIC_KERNEL |
797 | bool | |
798 | default n | |
799 | ||
14cf11af PM |
800 | menu "Advanced setup" |
801 | depends on PPC32 | |
802 | ||
803 | config ADVANCED_OPTIONS | |
804 | bool "Prompt for advanced kernel configuration options" | |
805 | help | |
806 | This option will enable prompting for a variety of advanced kernel | |
807 | configuration options. These options can cause the kernel to not | |
808 | work if they are set incorrectly, but can be used to optimize certain | |
809 | aspects of kernel memory management. | |
810 | ||
811 | Unless you know what you are doing, say N here. | |
812 | ||
813 | comment "Default settings for advanced configuration options are used" | |
814 | depends on !ADVANCED_OPTIONS | |
815 | ||
14cf11af PM |
816 | config LOWMEM_SIZE_BOOL |
817 | bool "Set maximum low memory" | |
818 | depends on ADVANCED_OPTIONS | |
819 | help | |
820 | This option allows you to set the maximum amount of memory which | |
821 | will be used as "low memory", that is, memory which the kernel can | |
822 | access directly, without having to set up a kernel virtual mapping. | |
823 | This can be useful in optimizing the layout of kernel virtual | |
824 | memory. | |
825 | ||
826 | Say N here unless you know what you are doing. | |
827 | ||
828 | config LOWMEM_SIZE | |
829 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
830 | default "0x30000000" | |
831 | ||
96051465 TP |
832 | config LOWMEM_CAM_NUM_BOOL |
833 | bool "Set number of CAMs to use to map low memory" | |
834 | depends on ADVANCED_OPTIONS && FSL_BOOKE | |
835 | help | |
836 | This option allows you to set the maximum number of CAM slots that | |
837 | will be used to map low memory. There are a limited number of slots | |
838 | available and even more limited number that will fit in the L1 MMU. | |
839 | However, using more entries will allow mapping more low memory. This | |
840 | can be useful in optimizing the layout of kernel virtual memory. | |
841 | ||
842 | Say N here unless you know what you are doing. | |
843 | ||
844 | config LOWMEM_CAM_NUM | |
9b71dbd3 | 845 | depends on FSL_BOOKE |
96051465 TP |
846 | int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL |
847 | default 3 | |
848 | ||
0f890c8d SP |
849 | config DYNAMIC_MEMSTART |
850 | bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)" | |
23913245 | 851 | depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) |
0f890c8d SP |
852 | select NONSTATIC_KERNEL |
853 | help | |
854 | This option enables the kernel to be loaded at any page aligned | |
855 | physical address. The kernel creates a mapping from KERNELBASE to | |
856 | the address where the kernel is loaded. The page size here implies | |
857 | the TLB page size of the mapping for kernel on the particular platform. | |
858 | Please refer to the init code for finding the TLB page size. | |
859 | ||
860 | DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE | |
861 | kernel image, where the only restriction is the page aligned kernel | |
862 | load address. When this option is enabled, the compile time physical | |
863 | address CONFIG_PHYSICAL_START is ignored. | |
864 | ||
9c5f7d39 SP |
865 | This option is overridden by CONFIG_RELOCATABLE |
866 | ||
37dd2bad KG |
867 | config RELOCATABLE |
868 | bool "Build a relocatable kernel (EXPERIMENTAL)" | |
26ecb6c4 | 869 | depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x |
9c5f7d39 | 870 | select NONSTATIC_KERNEL |
37dd2bad KG |
871 | help |
872 | This builds a kernel image that is capable of running at the | |
9c5f7d39 SP |
873 | location the kernel is loaded at, without any alignment restrictions. |
874 | This feature is a superset of DYNAMIC_MEMSTART and hence overrides it. | |
37dd2bad KG |
875 | |
876 | One use is for the kexec on panic case where the recovery kernel | |
877 | must live at a different physical address than the primary | |
878 | kernel. | |
879 | ||
880 | Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address | |
881 | it has been loaded at and the compile time physical addresses | |
882 | CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START | |
883 | setting can still be useful to bootwrappers that need to know the | |
9c5f7d39 SP |
884 | load address of the kernel (eg. u-boot/mkimage). |
885 | ||
886 | config RELOCATABLE_PPC32 | |
887 | def_bool y | |
888 | depends on PPC32 && RELOCATABLE | |
37dd2bad KG |
889 | |
890 | config PAGE_OFFSET_BOOL | |
891 | bool "Set custom page offset address" | |
892 | depends on ADVANCED_OPTIONS | |
893 | help | |
894 | This option allows you to set the kernel virtual address at which | |
895 | the kernel will map low memory. This can be useful in optimizing | |
896 | the virtual memory layout of the system. | |
897 | ||
898 | Say N here unless you know what you are doing. | |
899 | ||
900 | config PAGE_OFFSET | |
901 | hex "Virtual address of memory base" if PAGE_OFFSET_BOOL | |
902 | default "0xc0000000" | |
903 | ||
14cf11af PM |
904 | config KERNEL_START_BOOL |
905 | bool "Set custom kernel base address" | |
906 | depends on ADVANCED_OPTIONS | |
907 | help | |
908 | This option allows you to set the kernel virtual address at which | |
37dd2bad KG |
909 | the kernel will be loaded. Normally this should match PAGE_OFFSET |
910 | however there are times (like kdump) that one might not want them | |
911 | to be the same. | |
14cf11af PM |
912 | |
913 | Say N here unless you know what you are doing. | |
914 | ||
915 | config KERNEL_START | |
916 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
37dd2bad | 917 | default PAGE_OFFSET if PAGE_OFFSET_BOOL |
0f890c8d | 918 | default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL |
14cf11af PM |
919 | default "0xc0000000" |
920 | ||
37dd2bad KG |
921 | config PHYSICAL_START_BOOL |
922 | bool "Set physical address where the kernel is loaded" | |
923 | depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
924 | help | |
925 | This gives the physical address where the kernel is loaded. | |
926 | ||
927 | Say N here unless you know what you are doing. | |
928 | ||
929 | config PHYSICAL_START | |
930 | hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL | |
0f890c8d | 931 | default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL |
37dd2bad KG |
932 | default "0x00000000" |
933 | ||
934 | config PHYSICAL_ALIGN | |
935 | hex | |
c8f3570b | 936 | default "0x04000000" if FSL_BOOKE |
37dd2bad KG |
937 | help |
938 | This value puts the alignment restrictions on physical address | |
939 | where kernel is loaded and run from. Kernel is compiled for an | |
940 | address which meets above alignment restriction. | |
941 | ||
14cf11af PM |
942 | config TASK_SIZE_BOOL |
943 | bool "Set custom user task size" | |
944 | depends on ADVANCED_OPTIONS | |
945 | help | |
946 | This option allows you to set the amount of virtual address space | |
947 | allocated to user tasks. This can be useful in optimizing the | |
948 | virtual memory layout of the system. | |
949 | ||
950 | Say N here unless you know what you are doing. | |
951 | ||
952 | config TASK_SIZE | |
953 | hex "Size of user task space" if TASK_SIZE_BOOL | |
4d9e5510 KG |
954 | default "0x80000000" if PPC_PREP || PPC_8xx |
955 | default "0xc0000000" | |
14cf11af | 956 | |
84532a0f BH |
957 | config CONSISTENT_SIZE_BOOL |
958 | bool "Set custom consistent memory pool size" | |
959 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
960 | help | |
961 | This option allows you to set the size of the | |
962 | consistent memory pool. This pool of virtual memory | |
963 | is used to make consistent memory allocations. | |
964 | ||
965 | config CONSISTENT_SIZE | |
966 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
967 | default "0x00200000" if NOT_COHERENT_CACHE | |
968 | ||
14cf11af PM |
969 | config PIN_TLB |
970 | bool "Pinned Kernel TLBs (860 ONLY)" | |
971 | depends on ADVANCED_OPTIONS && 8xx | |
972 | endmenu | |
973 | ||
cabb5587 | 974 | if PPC64 |
549e8152 PM |
975 | config RELOCATABLE |
976 | bool "Build a relocatable kernel" | |
0f890c8d | 977 | select NONSTATIC_KERNEL |
549e8152 PM |
978 | help |
979 | This builds a kernel image that is capable of running anywhere | |
980 | in the RMA (real memory area) at any 16k-aligned base address. | |
981 | The kernel is linked as a position-independent executable (PIE) | |
982 | and contains dynamic relocations which are processed early | |
983 | in the bootup process. | |
984 | ||
985 | One use is for the kexec on panic case where the recovery kernel | |
986 | must live at a different physical address than the primary | |
987 | kernel. | |
988 | ||
37dd2bad KG |
989 | config PAGE_OFFSET |
990 | hex | |
991 | default "0xc000000000000000" | |
cabb5587 SR |
992 | config KERNEL_START |
993 | hex | |
eeb2d218 | 994 | default "0xc000000000000000" |
37dd2bad KG |
995 | config PHYSICAL_START |
996 | hex | |
37dd2bad | 997 | default "0x00000000" |
cabb5587 SR |
998 | endif |
999 | ||
14cf11af PM |
1000 | source "net/Kconfig" |
1001 | ||
1002 | source "drivers/Kconfig" | |
1003 | ||
1004 | source "fs/Kconfig" | |
1005 | ||
98658538 LY |
1006 | source "arch/powerpc/sysdev/qe_lib/Kconfig" |
1007 | ||
14cf11af PM |
1008 | source "lib/Kconfig" |
1009 | ||
14cf11af PM |
1010 | source "arch/powerpc/Kconfig.debug" |
1011 | ||
1012 | source "security/Kconfig" | |
1013 | ||
1014 | config KEYS_COMPAT | |
1015 | bool | |
1016 | depends on COMPAT && KEYS | |
1017 | default y | |
1018 | ||
1019 | source "crypto/Kconfig" | |
6f668280 DP |
1020 | |
1021 | config PPC_CLOCK | |
1022 | bool | |
1023 | default n | |
9483a578 | 1024 | select HAVE_CLK |
1088a209 SM |
1025 | |
1026 | config PPC_LIB_RHEAP | |
1027 | bool | |
1028 | ||
bbf45ba5 | 1029 | source "arch/powerpc/kvm/Kconfig" |