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 |
7ac57a89 | 102 | select SYSCTL_EXCEPTION_TRACE |
7444a72e | 103 | select ARCH_WANT_OPTIONAL_GPIOLIB |
ec7748b5 | 104 | select HAVE_IDE |
a1f242ff | 105 | select HAVE_IOREMAP_PROT |
58340a07 | 106 | select HAVE_EFFICIENT_UNALIGNED_ACCESS |
3f550096 | 107 | select HAVE_KPROBES |
17ce452f | 108 | select HAVE_ARCH_KGDB |
9edddaa2 | 109 | select HAVE_KRETPROBES |
dec2b0d0 | 110 | select HAVE_ARCH_TRACEHOOK |
95f72d1e | 111 | select HAVE_MEMBLOCK |
1d7cfe18 | 112 | select HAVE_MEMBLOCK_NODE_MAP |
46bab4e4 | 113 | select HAVE_DMA_ATTRS |
80d3e8ab | 114 | select HAVE_DMA_API_DEBUG |
b7d7a240 | 115 | select USE_GENERIC_SMP_HELPERS if SMP |
4e491d14 | 116 | select HAVE_OPROFILE |
b69ec42b | 117 | select HAVE_DEBUG_KMEMLEAK |
ee6a0932 | 118 | select HAVE_SYSCALL_WRAPPERS if PPC64 |
c2e95c6d | 119 | select GENERIC_ATOMIC64 if PPC32 |
7463449b | 120 | select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE |
e360adbe | 121 | select HAVE_IRQ_WORK |
cdd6c482 | 122 | select HAVE_PERF_EVENTS |
359e4284 | 123 | select HAVE_REGS_AND_STACK_ACCESS_API |
5aae8a53 | 124 | select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 |
2604362b | 125 | select HAVE_GENERIC_HARDIRQS |
c1d7e01d | 126 | select ARCH_WANT_IPC_PARSE_VERSION |
ad5b7f13 | 127 | select SPARSE_IRQ |
2604362b | 128 | select IRQ_PER_CPU |
cc79ca69 | 129 | select IRQ_DOMAIN |
433c9c67 TG |
130 | select GENERIC_IRQ_SHOW |
131 | select GENERIC_IRQ_SHOW_LEVEL | |
e8d2c473 | 132 | select IRQ_FORCED_THREADING |
26723911 | 133 | select HAVE_RCU_TABLE_FREE if SMP |
02424d89 | 134 | select HAVE_SYSCALL_TRACEPOINTS |
e47b65b0 | 135 | select HAVE_BPF_JIT if PPC64 |
ac5f89c7 | 136 | select HAVE_ARCH_JUMP_LABEL |
df013ffb | 137 | select ARCH_HAVE_NMI_SAFE_CMPXCHG |
17e32eac | 138 | select GENERIC_SMP_IDLE_THREAD |
b9ed27df | 139 | select GENERIC_CMOS_UPDATE |
70639421 | 140 | select GENERIC_TIME_VSYSCALL_OLD |
b9ed27df | 141 | select GENERIC_CLOCKEVENTS |
1629372c PM |
142 | select GENERIC_STRNCPY_FROM_USER |
143 | select GENERIC_STRNLEN_USER | |
786d35d4 DH |
144 | select HAVE_MOD_ARCH_SPECIFIC |
145 | select MODULES_USE_ELF_RELA | |
0bcfe540 | 146 | select CLONE_BACKWARDS |
14cf11af PM |
147 | |
148 | config EARLY_PRINTK | |
149 | bool | |
51d3082f | 150 | default y |
14cf11af PM |
151 | |
152 | config COMPAT | |
153 | bool | |
154 | default y if PPC64 | |
01e31dba | 155 | select COMPAT_BINFMT_ELF |
48b25c43 | 156 | select ARCH_WANT_OLD_COMPAT_IPC |
14cf11af PM |
157 | |
158 | config SYSVIPC_COMPAT | |
159 | bool | |
160 | depends on COMPAT && SYSVIPC | |
161 | default y | |
162 | ||
163 | # All PPC32s use generic nvram driver through ppc_md | |
164 | config GENERIC_NVRAM | |
165 | bool | |
166 | default y if PPC32 | |
167 | ||
ae1e9130 | 168 | config SCHED_OMIT_FRAME_POINTER |
14cf11af PM |
169 | bool |
170 | default y | |
171 | ||
172 | config ARCH_MAY_HAVE_PC_FDC | |
173 | bool | |
bed59275 | 174 | default !PPC_PSERIES || PCI |
14cf11af | 175 | |
08264cbc KG |
176 | config PPC_OF |
177 | def_bool y | |
178 | ||
179 | config PPC_UDBG_16550 | |
180 | bool | |
181 | default n | |
182 | ||
08264cbc KG |
183 | config GENERIC_TBSYNC |
184 | bool | |
185 | default y if PPC32 && SMP | |
186 | default n | |
187 | ||
e65e1fc2 AV |
188 | config AUDIT_ARCH |
189 | bool | |
190 | default y | |
191 | ||
73c9ceab JF |
192 | config GENERIC_BUG |
193 | bool | |
194 | default y | |
195 | depends on BUG | |
196 | ||
b3028878 | 197 | config SYS_SUPPORTS_APM_EMULATION |
58da10bb | 198 | default y if PMAC_APM_EMU |
b3028878 JB |
199 | bool |
200 | ||
6c5b59b9 DG |
201 | config EPAPR_BOOT |
202 | bool | |
203 | help | |
204 | Used to allow a board to specify it wants an ePAPR compliant wrapper. | |
205 | default n | |
206 | ||
f4fc4a5b KG |
207 | config DEFAULT_UIMAGE |
208 | bool | |
209 | help | |
210 | Used to allow a board to specify it wants a uImage built by default | |
211 | default n | |
212 | ||
b09c1644 SW |
213 | config REDBOOT |
214 | bool | |
215 | ||
801e4062 JB |
216 | config ARCH_HIBERNATION_POSSIBLE |
217 | bool | |
543b9fd3 JB |
218 | default y |
219 | ||
f4cb5700 JB |
220 | config ARCH_SUSPEND_POSSIBLE |
221 | def_bool y | |
4ffd6952 | 222 | depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ |
d0832a75 ZC |
223 | (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \ |
224 | || 44x || 40x | |
f4cb5700 | 225 | |
4c75a6f4 BH |
226 | config PPC_DCR_NATIVE |
227 | bool | |
228 | default n | |
229 | ||
230 | config PPC_DCR_MMIO | |
231 | bool | |
232 | default n | |
233 | ||
234 | config PPC_DCR | |
235 | bool | |
236 | depends on PPC_DCR_NATIVE || PPC_DCR_MMIO | |
237 | default y | |
238 | ||
4c9d2800 BH |
239 | config PPC_OF_PLATFORM_PCI |
240 | bool | |
373a6da1 | 241 | depends on PCI |
4c9d2800 BH |
242 | depends on PPC64 # not supported on 32 bits yet |
243 | default n | |
244 | ||
6a11f75b AM |
245 | config ARCH_SUPPORTS_DEBUG_PAGEALLOC |
246 | def_bool y | |
247 | ||
8b7b80b9 AM |
248 | config ARCH_SUPPORTS_UPROBES |
249 | def_bool y | |
250 | ||
172ae2e7 DK |
251 | config PPC_ADV_DEBUG_REGS |
252 | bool | |
253 | depends on 40x || BOOKE | |
254 | default y | |
255 | ||
256 | config PPC_ADV_DEBUG_IACS | |
257 | int | |
258 | depends on PPC_ADV_DEBUG_REGS | |
259 | default 4 if 44x | |
260 | default 2 | |
261 | ||
262 | config PPC_ADV_DEBUG_DACS | |
263 | int | |
264 | depends on PPC_ADV_DEBUG_REGS | |
265 | default 2 | |
266 | ||
267 | config PPC_ADV_DEBUG_DVCS | |
268 | int | |
269 | depends on PPC_ADV_DEBUG_REGS | |
270 | default 2 if 44x | |
271 | default 0 | |
272 | ||
273 | config PPC_ADV_DEBUG_DAC_RANGE | |
274 | bool | |
275 | depends on PPC_ADV_DEBUG_REGS && 44x | |
276 | default y | |
277 | ||
14cf11af PM |
278 | source "init/Kconfig" |
279 | ||
dc52ddc0 MH |
280 | source "kernel/Kconfig.freezer" |
281 | ||
a2d2e1ec | 282 | source "arch/powerpc/sysdev/Kconfig" |
4330f5da | 283 | source "arch/powerpc/platforms/Kconfig" |
14cf11af | 284 | |
14cf11af PM |
285 | menu "Kernel options" |
286 | ||
287 | config HIGHMEM | |
288 | bool "High memory support" | |
289 | depends on PPC32 | |
290 | ||
291 | source kernel/Kconfig.hz | |
292 | source kernel/Kconfig.preempt | |
293 | source "fs/Kconfig.binfmt" | |
294 | ||
ba72cb8c MG |
295 | config HUGETLB_PAGE_SIZE_VARIABLE |
296 | bool | |
297 | depends on HUGETLB_PAGE | |
298 | default y | |
299 | ||
14cf11af PM |
300 | config MATH_EMULATION |
301 | bool "Math emulation" | |
4d52719a | 302 | depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 |
14cf11af PM |
303 | ---help--- |
304 | Some PowerPC chips designed for embedded applications do not have | |
305 | a floating-point unit and therefore do not implement the | |
306 | floating-point instructions in the PowerPC instruction set. If you | |
307 | say Y here, the kernel will include code to emulate a floating-point | |
308 | unit, which will allow programs that use floating-point | |
309 | instructions to run. | |
310 | ||
5dd57a13 SW |
311 | config 8XX_MINIMAL_FPEMU |
312 | bool "Minimal math emulation for 8xx" | |
313 | depends on 8xx && !MATH_EMULATION | |
314 | help | |
315 | Older arch/ppc kernels still emulated a few floating point | |
316 | instructions such as load and store, even when full math | |
317 | emulation is disabled. Say "Y" here if you want to preserve | |
318 | this behavior. | |
319 | ||
320 | It is recommended that you build a soft-float userspace instead. | |
321 | ||
fb3475e9 FT |
322 | config IOMMU_HELPER |
323 | def_bool PPC64 | |
324 | ||
ec3cf2ec BB |
325 | config SWIOTLB |
326 | bool "SWIOTLB support" | |
327 | default n | |
328 | select IOMMU_HELPER | |
329 | ---help--- | |
330 | Support for IO bounce buffering for systems without an IOMMU. | |
331 | This allows us to DMA to the full physical address space on | |
332 | platforms where the size of a physical address is larger | |
333 | than the bus address. Not all platforms support this. | |
334 | ||
14cf11af PM |
335 | config HOTPLUG_CPU |
336 | bool "Support for enabling/disabling CPUs" | |
d0832a75 ZC |
337 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || \ |
338 | PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC)) | |
14cf11af PM |
339 | ---help--- |
340 | Say Y here to be able to disable and re-enable individual | |
341 | CPUs at runtime on SMP machines. | |
342 | ||
343 | Say N if you are unsure. | |
344 | ||
12633e80 NF |
345 | config ARCH_CPU_PROBE_RELEASE |
346 | def_bool y | |
347 | depends on HOTPLUG_CPU | |
348 | ||
cc57637b YG |
349 | config ARCH_ENABLE_MEMORY_HOTPLUG |
350 | def_bool y | |
351 | ||
a99824f3 BP |
352 | config ARCH_HAS_WALK_MEMORY |
353 | def_bool y | |
354 | ||
1482471d BP |
355 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
356 | def_bool y | |
357 | ||
14cf11af PM |
358 | config KEXEC |
359 | bool "kexec system call (EXPERIMENTAL)" | |
68343020 | 360 | depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) && EXPERIMENTAL |
14cf11af PM |
361 | help |
362 | kexec is a system call that implements the ability to shutdown your | |
363 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 364 | but it is independent of the system firmware. And like a reboot |
14cf11af PM |
365 | you can start any kernel with it, not just Linux. |
366 | ||
1f1332f7 | 367 | The name comes from the similarity to the exec system call. |
14cf11af PM |
368 | |
369 | It is an ongoing process to be certain the hardware in a machine | |
370 | is properly shutdown, so do not be surprised if this code does not | |
371 | initially work for you. It may help to enable device hotplugging | |
372 | support. As of this writing the exact hardware interface is | |
373 | strongly in flux, so no good recommendation can be made. | |
374 | ||
e8625d46 | 375 | config CRASH_DUMP |
3420b5da | 376 | bool "Build a kdump crash kernel" |
47da4219 | 377 | depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) |
5b2e478d | 378 | select RELOCATABLE if PPC64 || 44x |
0f890c8d | 379 | select DYNAMIC_MEMSTART if FSL_BOOKE |
e8625d46 HM |
380 | help |
381 | Build a kernel suitable for use as a kdump capture kernel. | |
54622f10 MK |
382 | The same kernel binary can be used as production kernel and dump |
383 | capture kernel. | |
e8625d46 | 384 | |
eb39c880 MS |
385 | config FA_DUMP |
386 | bool "Firmware-assisted dump" | |
387 | depends on PPC64 && PPC_RTAS && CRASH_DUMP | |
242f271c | 388 | help |
eb39c880 MS |
389 | A robust mechanism to get reliable kernel crash dump with |
390 | assistance from firmware. This approach does not use kexec, | |
391 | instead firmware assists in booting the kdump kernel | |
392 | while preserving memory contents. Firmware-assisted dump | |
393 | is meant to be a kdump replacement offering robustness and | |
394 | speed not possible without system firmware assistance. | |
242f271c MA |
395 | |
396 | If unsure, say "N" | |
397 | ||
14cf11af PM |
398 | config IRQ_ALL_CPUS |
399 | bool "Distribute interrupts on all CPUs by default" | |
400 | depends on SMP && !MV64360 | |
401 | help | |
402 | This option gives the kernel permission to distribute IRQs across | |
403 | multiple CPUs. Saying N here will route all IRQs to the first | |
404 | CPU. Generally saying Y is safe, although some problems have been | |
405 | reported with SMP Power Macintoshes with this option enabled. | |
406 | ||
ffa27b6b AW |
407 | config NUMA |
408 | bool "NUMA support" | |
409 | depends on PPC64 | |
410 | default y if SMP && PPC_PSERIES | |
411 | ||
c80d79d7 YG |
412 | config NODES_SHIFT |
413 | int | |
ea55bf29 | 414 | default "8" if PPC64 |
c80d79d7 YG |
415 | default "4" |
416 | depends on NEED_MULTIPLE_NODES | |
417 | ||
ea55bf29 AB |
418 | config MAX_ACTIVE_REGIONS |
419 | int | |
420 | default "256" if PPC64 | |
421 | default "32" | |
422 | ||
14cf11af PM |
423 | config ARCH_SELECT_MEMORY_MODEL |
424 | def_bool y | |
425 | depends on PPC64 | |
426 | ||
427 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
428 | def_bool y |
429 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 430 | |
45fb6cea | 431 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 432 | def_bool y |
9100b205 | 433 | depends on PPC64 |
d29eff7b | 434 | select SPARSEMEM_VMEMMAP_ENABLE |
14cf11af | 435 | |
45fb6cea | 436 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 437 | def_bool y |
78bde53e | 438 | depends on (SMP && PPC_PSERIES) || PPC_PS3 |
14cf11af | 439 | |
5a1eb5c4 | 440 | config SYS_SUPPORTS_HUGETLBFS |
41151e77 | 441 | bool |
5a1eb5c4 | 442 | |
c67c3cb4 | 443 | source "mm/Kconfig" |
14cf11af | 444 | |
7e9191da MK |
445 | config ARCH_MEMORY_PROBE |
446 | def_bool y | |
447 | depends on MEMORY_HOTPLUG | |
448 | ||
75167957 AW |
449 | # Some NUMA nodes have memory ranges that span |
450 | # other nodes. Even though a pfn is valid and | |
451 | # between a node's start and end pfns, it may not | |
452 | # reside on that node. See memmap_init_zone() | |
453 | # for details. | |
454 | config NODES_SPAN_OTHER_NODES | |
455 | def_bool y | |
456 | depends on NEED_MULTIPLE_NODES | |
457 | ||
16c2d476 BH |
458 | config PPC_HAS_HASH_64K |
459 | bool | |
460 | depends on PPC64 | |
461 | default n | |
462 | ||
e1240122 YT |
463 | config STDBINUTILS |
464 | bool "Using standard binutils settings" | |
465 | depends on 44x | |
466 | default y | |
467 | help | |
468 | Turning this option off allows you to select 256KB PAGE_SIZE on 44x. | |
469 | Note, that kernel will be able to run only those applications, | |
470 | which had been compiled using binutils later than 2.17.50.0.3 with | |
471 | '-zmax-page-size' set to 256K (the default is 64K). Or, if using | |
472 | the older binutils, you can patch them with a trivial patch, which | |
473 | changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. | |
474 | ||
ca9153a3 IY |
475 | choice |
476 | prompt "Page size" | |
477 | default PPC_4K_PAGES | |
3c726f8d | 478 | help |
ca9153a3 IY |
479 | Select the kernel logical page size. Increasing the page size |
480 | will reduce software overhead at each page boundary, allow | |
481 | hardware prefetch mechanisms to be more effective, and allow | |
482 | larger dma transfers increasing IO efficiency and reducing | |
483 | overhead. However the utilization of memory will increase. | |
484 | For example, each cached file will using a multiple of the | |
485 | page size to hold its contents and the difference between the | |
486 | end of file and the end of page is wasted. | |
487 | ||
488 | Some dedicated systems, such as software raid serving with | |
489 | accelerated calculations, have shown significant increases. | |
490 | ||
491 | If you configure a 64 bit kernel for 64k pages but the | |
492 | processor does not support them, then the kernel will simulate | |
493 | them with 4k pages, loading them on demand, but with the | |
494 | reduced software overhead and larger internal fragmentation. | |
495 | For the 32 bit kernel, a large page option will not be offered | |
496 | unless it is supported by the configured processor. | |
497 | ||
498 | If unsure, choose 4K_PAGES. | |
499 | ||
500 | config PPC_4K_PAGES | |
501 | bool "4k page size" | |
502 | ||
503 | config PPC_16K_PAGES | |
504 | bool "16k page size" if 44x | |
505 | ||
506 | config PPC_64K_PAGES | |
2d27cfd3 | 507 | bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 |
ca9153a3 IY |
508 | select PPC_HAS_HASH_64K if PPC_STD_MMU_64 |
509 | ||
e1240122 YT |
510 | config PPC_256K_PAGES |
511 | bool "256k page size" if 44x | |
adf213c4 | 512 | depends on !STDBINUTILS |
e1240122 YT |
513 | help |
514 | Make the page size 256k. | |
515 | ||
516 | As the ELF standard only requires alignment to support page | |
517 | sizes up to 64k, you will need to compile all of your user | |
518 | space applications with a non-standard binutils settings | |
519 | (see the STDBINUTILS description for details). | |
520 | ||
521 | Say N unless you know what you are doing. | |
522 | ||
ca9153a3 | 523 | endchoice |
3c726f8d | 524 | |
53bcddb9 SR |
525 | config FORCE_MAX_ZONEORDER |
526 | int "Maximum zone order" | |
066c4b87 BH |
527 | range 9 64 if PPC64 && PPC_64K_PAGES |
528 | default "9" if PPC64 && PPC_64K_PAGES | |
529 | range 13 64 if PPC64 && !PPC_64K_PAGES | |
530 | default "13" if PPC64 && !PPC_64K_PAGES | |
531 | range 9 64 if PPC32 && PPC_16K_PAGES | |
532 | default "9" if PPC32 && PPC_16K_PAGES | |
533 | range 7 64 if PPC32 && PPC_64K_PAGES | |
534 | default "7" if PPC32 && PPC_64K_PAGES | |
535 | range 5 64 if PPC32 && PPC_256K_PAGES | |
536 | default "5" if PPC32 && PPC_256K_PAGES | |
ebe40c5c | 537 | range 11 64 |
53bcddb9 SR |
538 | default "11" |
539 | help | |
540 | The kernel memory allocator divides physically contiguous memory | |
541 | blocks into "zones", where each zone is a power of two number of | |
542 | pages. This option selects the largest power of two that the kernel | |
543 | keeps in the memory allocator. If you need to allocate very large | |
544 | blocks of physically contiguous memory, then you may need to | |
545 | increase this value. | |
546 | ||
547 | This config option is actually maximum order plus one. For example, | |
548 | a value of 11 means that the largest free memory block is 2^10 pages. | |
549 | ||
550 | The page size is not necessarily 4KB. For example, on 64-bit | |
551 | systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep | |
552 | this in mind when choosing a value for this option. | |
553 | ||
fa28237c PM |
554 | config PPC_SUBPAGE_PROT |
555 | bool "Support setting protections for 4k subpages" | |
ca9153a3 | 556 | depends on PPC_STD_MMU_64 && PPC_64K_PAGES |
fa28237c PM |
557 | help |
558 | This option adds support for a system call to allow user programs | |
559 | to set access permissions (read/write, readonly, or no access) | |
560 | on the 4k subpages of each 64k page. | |
561 | ||
14cf11af PM |
562 | config SCHED_SMT |
563 | bool "SMT (Hyperthreading) scheduler support" | |
564 | depends on PPC64 && SMP | |
14cf11af PM |
565 | help |
566 | SMT scheduler support improves the CPU scheduler's decision making | |
567 | when dealing with POWER5 cpus at a cost of slightly increased | |
568 | overhead in some places. If unsure say N here. | |
569 | ||
b92a66a6 MN |
570 | config PPC_DENORMALISATION |
571 | bool "PowerPC denormalisation exception handling" | |
572 | depends on PPC_BOOK3S_64 | |
573 | default "n" | |
574 | ---help--- | |
575 | Add support for handling denormalisation of single precision | |
576 | values. Useful for bare metal only. If unsure say Y here. | |
577 | ||
14cf11af PM |
578 | config CMDLINE_BOOL |
579 | bool "Default bootloader kernel arguments" | |
14cf11af PM |
580 | |
581 | config CMDLINE | |
582 | string "Initial kernel command string" | |
583 | depends on CMDLINE_BOOL | |
584 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
585 | help | |
586 | On some platforms, there is currently no way for the boot loader to | |
587 | pass arguments to the kernel. For these platforms, you can supply | |
588 | some command-line options at build time by entering them here. In | |
589 | most cases you will need to specify the root device here. | |
590 | ||
c356aa45 GL |
591 | config EXTRA_TARGETS |
592 | string "Additional default image types" | |
593 | help | |
594 | List additional targets to be built by the bootwrapper here (separated | |
595 | by spaces). This is useful for targets that depend of device tree | |
596 | files in the .dts directory. | |
597 | ||
598 | Targets in this list will be build as part of the default build | |
599 | target, or when the user does a 'make zImage' or a | |
600 | 'make zImage.initrd'. | |
601 | ||
602 | If unsure, leave blank | |
603 | ||
b28f5081 JB |
604 | config ARCH_WANTS_FREEZER_CONTROL |
605 | def_bool y | |
606 | depends on ADB_PMU | |
607 | ||
14cf11af | 608 | source kernel/power/Kconfig |
14cf11af PM |
609 | |
610 | config SECCOMP | |
611 | bool "Enable seccomp to safely compute untrusted bytecode" | |
612 | depends on PROC_FS | |
613 | default y | |
614 | help | |
615 | This kernel feature is useful for number crunching applications | |
616 | that may need to compute untrusted bytecode during their | |
617 | execution. By using pipes or other transports made available to | |
618 | the process as file descriptors supporting the read/write | |
619 | syscalls, it's possible to isolate those applications in | |
620 | their own address space using seccomp. Once seccomp is | |
621 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
622 | and the task is only allowed to execute a few safe syscalls | |
623 | defined by each seccomp mode. | |
624 | ||
625 | If unsure, say Y. Only embedded should say N here. | |
626 | ||
627 | endmenu | |
628 | ||
629 | config ISA_DMA_API | |
630 | bool | |
3d066d77 | 631 | default PCI |
14cf11af PM |
632 | |
633 | menu "Bus options" | |
634 | ||
635 | config ISA | |
636 | bool "Support for ISA-bus hardware" | |
637 | depends on PPC_PREP || PPC_CHRP | |
f9bd170a | 638 | select PPC_I8259 |
14cf11af PM |
639 | help |
640 | Find out whether you have ISA slots on your motherboard. ISA is the | |
641 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
642 | inside your box. If you have an Apple machine, say N here; if you | |
643 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If | |
644 | you have an embedded board, consult your board documentation. | |
645 | ||
5ac6da66 CL |
646 | config ZONE_DMA |
647 | bool | |
648 | default y | |
649 | ||
af407c6d FT |
650 | config NEED_DMA_MAP_STATE |
651 | def_bool (PPC64 || NOT_COHERENT_CACHE) | |
652 | ||
e32205eb FT |
653 | config NEED_SG_DMA_LENGTH |
654 | def_bool y | |
655 | ||
14cf11af PM |
656 | config GENERIC_ISA_DMA |
657 | bool | |
1927445a | 658 | depends on ISA_DMA_API |
14cf11af PM |
659 | default y |
660 | ||
25635c71 PM |
661 | config PPC_INDIRECT_PCI |
662 | bool | |
663 | depends on PCI | |
63dafe57 | 664 | default y if 40x || 44x |
25635c71 PM |
665 | default n |
666 | ||
14cf11af PM |
667 | config EISA |
668 | bool | |
669 | ||
670 | config SBUS | |
671 | bool | |
672 | ||
08264cbc KG |
673 | config FSL_SOC |
674 | bool | |
b489da87 | 675 | select HAVE_CAN_FLEXCAN if NET && CAN |
6d4ae2dd | 676 | select PPC_CLOCK |
08264cbc | 677 | |
55c44991 RZ |
678 | config FSL_PCI |
679 | bool | |
680 | select PPC_INDIRECT_PCI | |
d0839118 | 681 | select PCI_QUIRKS |
55c44991 | 682 | |
4ffd6952 AV |
683 | config FSL_PMC |
684 | bool | |
685 | default y | |
686 | depends on SUSPEND && (PPC_85xx || PPC_86xx) | |
687 | help | |
688 | Freescale MPC85xx/MPC86xx power management controller support | |
689 | (suspend/resume). For MPC83xx see platforms/83xx/suspend.c | |
690 | ||
d164f6d4 VG |
691 | config PPC4xx_CPM |
692 | bool | |
693 | default y | |
694 | depends on SUSPEND && (44x || 40x) | |
695 | help | |
696 | PPC4xx Clock Power Management (CPM) support (suspend/resume). | |
697 | It also enables support for two different idle states (idle-wait | |
698 | and idle-doze). | |
699 | ||
2a706919 SR |
700 | config 4xx_SOC |
701 | bool | |
702 | ||
acaa7aa3 | 703 | config FSL_LBC |
3ab8f2a2 RZ |
704 | bool "Freescale Local Bus support" |
705 | depends on FSL_SOC | |
acaa7aa3 | 706 | help |
3ab8f2a2 RZ |
707 | Enables reporting of errors from the Freescale local bus |
708 | controller. Also contains some common code used by | |
709 | drivers for specific local bus peripherals. | |
acaa7aa3 | 710 | |
a20cbdef PK |
711 | config FSL_IFC |
712 | bool | |
713 | depends on FSL_SOC | |
714 | ||
83ff9dcf AV |
715 | config FSL_GTM |
716 | bool | |
717 | depends on PPC_83xx || QUICC_ENGINE || CPM2 | |
718 | help | |
719 | Freescale General-purpose Timers support | |
720 | ||
14cf11af PM |
721 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
722 | config MCA | |
723 | bool | |
724 | ||
b500563b JR |
725 | # Platforms that what PCI turned unconditionally just do select PCI |
726 | # in their config node. Platforms that want to choose at config | |
727 | # time should select PPC_PCI_CHOICE | |
728 | config PPC_PCI_CHOICE | |
729 | bool | |
730 | ||
14cf11af | 731 | config PCI |
b500563b JR |
732 | bool "PCI support" if PPC_PCI_CHOICE |
733 | default y if !40x && !CPM2 && !8xx && !PPC_83xx \ | |
bcc48591 | 734 | && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON |
f21f49ea | 735 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx |
14cf11af | 736 | default PCI_QSPAN if !4xx && !CPM2 && 8xx |
df87ef55 | 737 | select ARCH_SUPPORTS_MSI |
335b8cf7 | 738 | select GENERIC_PCI_IOMAP |
14cf11af PM |
739 | help |
740 | Find out whether your system includes a PCI bus. PCI is the name of | |
741 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
742 | your box. If you say Y here, the kernel will include drivers and | |
743 | infrastructure code to support PCI bus devices. | |
744 | ||
745 | config PCI_DOMAINS | |
36e23590 MW |
746 | def_bool PCI |
747 | ||
748 | config PCI_SYSCALL | |
749 | def_bool PCI | |
14cf11af | 750 | |
14cf11af PM |
751 | config PCI_QSPAN |
752 | bool "QSpan PCI" | |
753 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 754 | select PPC_I8259 |
14cf11af PM |
755 | help |
756 | Say Y here if you have a system based on a Motorola 8xx-series | |
757 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
758 | ||
759 | config PCI_8260 | |
760 | bool | |
761 | depends on PCI && 8260 | |
25635c71 | 762 | select PPC_INDIRECT_PCI |
14cf11af PM |
763 | default y |
764 | ||
765 | config 8260_PCI9 | |
4a3ecc62 | 766 | bool "Enable workaround for MPC826x erratum PCI 9" |
e00c5498 | 767 | depends on PCI_8260 && !8272 |
14cf11af PM |
768 | default y |
769 | ||
bb53bb3d JM |
770 | source "drivers/pci/pcie/Kconfig" |
771 | ||
14cf11af PM |
772 | source "drivers/pci/Kconfig" |
773 | ||
774 | source "drivers/pcmcia/Kconfig" | |
775 | ||
776 | source "drivers/pci/hotplug/Kconfig" | |
777 | ||
f1f389d5 ZW |
778 | config HAS_RAPIDIO |
779 | bool | |
780 | default n | |
781 | ||
782 | config RAPIDIO | |
783 | bool "RapidIO support" | |
388b78ad | 784 | depends on HAS_RAPIDIO || PCI |
f1f389d5 ZW |
785 | help |
786 | If you say Y here, the kernel will include drivers and | |
787 | infrastructure code to support RapidIO interconnect devices. | |
788 | ||
388b78ad AB |
789 | config FSL_RIO |
790 | bool "Freescale Embedded SRIO Controller support" | |
791 | depends on RAPIDIO && HAS_RAPIDIO | |
792 | default "n" | |
793 | ---help--- | |
794 | Include support for RapidIO controller on Freescale embedded | |
795 | processors (MPC8548, MPC8641, etc). | |
796 | ||
f1f389d5 ZW |
797 | source "drivers/rapidio/Kconfig" |
798 | ||
14cf11af PM |
799 | endmenu |
800 | ||
0f890c8d SP |
801 | config NONSTATIC_KERNEL |
802 | bool | |
803 | default n | |
804 | ||
14cf11af PM |
805 | menu "Advanced setup" |
806 | depends on PPC32 | |
807 | ||
808 | config ADVANCED_OPTIONS | |
809 | bool "Prompt for advanced kernel configuration options" | |
810 | help | |
811 | This option will enable prompting for a variety of advanced kernel | |
812 | configuration options. These options can cause the kernel to not | |
813 | work if they are set incorrectly, but can be used to optimize certain | |
814 | aspects of kernel memory management. | |
815 | ||
816 | Unless you know what you are doing, say N here. | |
817 | ||
818 | comment "Default settings for advanced configuration options are used" | |
819 | depends on !ADVANCED_OPTIONS | |
820 | ||
14cf11af PM |
821 | config LOWMEM_SIZE_BOOL |
822 | bool "Set maximum low memory" | |
823 | depends on ADVANCED_OPTIONS | |
824 | help | |
825 | This option allows you to set the maximum amount of memory which | |
826 | will be used as "low memory", that is, memory which the kernel can | |
827 | access directly, without having to set up a kernel virtual mapping. | |
828 | This can be useful in optimizing the layout of kernel virtual | |
829 | memory. | |
830 | ||
831 | Say N here unless you know what you are doing. | |
832 | ||
833 | config LOWMEM_SIZE | |
834 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
835 | default "0x30000000" | |
836 | ||
96051465 TP |
837 | config LOWMEM_CAM_NUM_BOOL |
838 | bool "Set number of CAMs to use to map low memory" | |
839 | depends on ADVANCED_OPTIONS && FSL_BOOKE | |
840 | help | |
841 | This option allows you to set the maximum number of CAM slots that | |
842 | will be used to map low memory. There are a limited number of slots | |
843 | available and even more limited number that will fit in the L1 MMU. | |
844 | However, using more entries will allow mapping more low memory. This | |
845 | can be useful in optimizing the layout of kernel virtual memory. | |
846 | ||
847 | Say N here unless you know what you are doing. | |
848 | ||
849 | config LOWMEM_CAM_NUM | |
9b71dbd3 | 850 | depends on FSL_BOOKE |
96051465 TP |
851 | int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL |
852 | default 3 | |
853 | ||
0f890c8d SP |
854 | config DYNAMIC_MEMSTART |
855 | bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)" | |
23913245 | 856 | depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) |
0f890c8d SP |
857 | select NONSTATIC_KERNEL |
858 | help | |
859 | This option enables the kernel to be loaded at any page aligned | |
860 | physical address. The kernel creates a mapping from KERNELBASE to | |
861 | the address where the kernel is loaded. The page size here implies | |
862 | the TLB page size of the mapping for kernel on the particular platform. | |
863 | Please refer to the init code for finding the TLB page size. | |
864 | ||
865 | DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE | |
866 | kernel image, where the only restriction is the page aligned kernel | |
867 | load address. When this option is enabled, the compile time physical | |
868 | address CONFIG_PHYSICAL_START is ignored. | |
869 | ||
9c5f7d39 SP |
870 | This option is overridden by CONFIG_RELOCATABLE |
871 | ||
37dd2bad KG |
872 | config RELOCATABLE |
873 | bool "Build a relocatable kernel (EXPERIMENTAL)" | |
26ecb6c4 | 874 | depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x |
9c5f7d39 | 875 | select NONSTATIC_KERNEL |
37dd2bad KG |
876 | help |
877 | This builds a kernel image that is capable of running at the | |
9c5f7d39 SP |
878 | location the kernel is loaded at, without any alignment restrictions. |
879 | This feature is a superset of DYNAMIC_MEMSTART and hence overrides it. | |
37dd2bad KG |
880 | |
881 | One use is for the kexec on panic case where the recovery kernel | |
882 | must live at a different physical address than the primary | |
883 | kernel. | |
884 | ||
885 | Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address | |
886 | it has been loaded at and the compile time physical addresses | |
887 | CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START | |
888 | setting can still be useful to bootwrappers that need to know the | |
9c5f7d39 SP |
889 | load address of the kernel (eg. u-boot/mkimage). |
890 | ||
891 | config RELOCATABLE_PPC32 | |
892 | def_bool y | |
893 | depends on PPC32 && RELOCATABLE | |
37dd2bad KG |
894 | |
895 | config PAGE_OFFSET_BOOL | |
896 | bool "Set custom page offset address" | |
897 | depends on ADVANCED_OPTIONS | |
898 | help | |
899 | This option allows you to set the kernel virtual address at which | |
900 | the kernel will map low memory. This can be useful in optimizing | |
901 | the virtual memory layout of the system. | |
902 | ||
903 | Say N here unless you know what you are doing. | |
904 | ||
905 | config PAGE_OFFSET | |
906 | hex "Virtual address of memory base" if PAGE_OFFSET_BOOL | |
907 | default "0xc0000000" | |
908 | ||
14cf11af PM |
909 | config KERNEL_START_BOOL |
910 | bool "Set custom kernel base address" | |
911 | depends on ADVANCED_OPTIONS | |
912 | help | |
913 | This option allows you to set the kernel virtual address at which | |
37dd2bad KG |
914 | the kernel will be loaded. Normally this should match PAGE_OFFSET |
915 | however there are times (like kdump) that one might not want them | |
916 | to be the same. | |
14cf11af PM |
917 | |
918 | Say N here unless you know what you are doing. | |
919 | ||
920 | config KERNEL_START | |
921 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
37dd2bad | 922 | default PAGE_OFFSET if PAGE_OFFSET_BOOL |
0f890c8d | 923 | default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL |
14cf11af PM |
924 | default "0xc0000000" |
925 | ||
37dd2bad KG |
926 | config PHYSICAL_START_BOOL |
927 | bool "Set physical address where the kernel is loaded" | |
928 | depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
929 | help | |
930 | This gives the physical address where the kernel is loaded. | |
931 | ||
932 | Say N here unless you know what you are doing. | |
933 | ||
934 | config PHYSICAL_START | |
935 | hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL | |
0f890c8d | 936 | default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL |
37dd2bad KG |
937 | default "0x00000000" |
938 | ||
939 | config PHYSICAL_ALIGN | |
940 | hex | |
c8f3570b | 941 | default "0x04000000" if FSL_BOOKE |
37dd2bad KG |
942 | help |
943 | This value puts the alignment restrictions on physical address | |
944 | where kernel is loaded and run from. Kernel is compiled for an | |
945 | address which meets above alignment restriction. | |
946 | ||
14cf11af PM |
947 | config TASK_SIZE_BOOL |
948 | bool "Set custom user task size" | |
949 | depends on ADVANCED_OPTIONS | |
950 | help | |
951 | This option allows you to set the amount of virtual address space | |
952 | allocated to user tasks. This can be useful in optimizing the | |
953 | virtual memory layout of the system. | |
954 | ||
955 | Say N here unless you know what you are doing. | |
956 | ||
957 | config TASK_SIZE | |
958 | hex "Size of user task space" if TASK_SIZE_BOOL | |
4d9e5510 KG |
959 | default "0x80000000" if PPC_PREP || PPC_8xx |
960 | default "0xc0000000" | |
14cf11af | 961 | |
84532a0f BH |
962 | config CONSISTENT_SIZE_BOOL |
963 | bool "Set custom consistent memory pool size" | |
964 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
965 | help | |
966 | This option allows you to set the size of the | |
967 | consistent memory pool. This pool of virtual memory | |
968 | is used to make consistent memory allocations. | |
969 | ||
970 | config CONSISTENT_SIZE | |
971 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
972 | default "0x00200000" if NOT_COHERENT_CACHE | |
973 | ||
14cf11af PM |
974 | config PIN_TLB |
975 | bool "Pinned Kernel TLBs (860 ONLY)" | |
976 | depends on ADVANCED_OPTIONS && 8xx | |
977 | endmenu | |
978 | ||
cabb5587 | 979 | if PPC64 |
549e8152 PM |
980 | config RELOCATABLE |
981 | bool "Build a relocatable kernel" | |
0f890c8d | 982 | select NONSTATIC_KERNEL |
549e8152 PM |
983 | help |
984 | This builds a kernel image that is capable of running anywhere | |
985 | in the RMA (real memory area) at any 16k-aligned base address. | |
986 | The kernel is linked as a position-independent executable (PIE) | |
987 | and contains dynamic relocations which are processed early | |
988 | in the bootup process. | |
989 | ||
990 | One use is for the kexec on panic case where the recovery kernel | |
991 | must live at a different physical address than the primary | |
992 | kernel. | |
993 | ||
37dd2bad KG |
994 | config PAGE_OFFSET |
995 | hex | |
996 | default "0xc000000000000000" | |
cabb5587 SR |
997 | config KERNEL_START |
998 | hex | |
eeb2d218 | 999 | default "0xc000000000000000" |
37dd2bad KG |
1000 | config PHYSICAL_START |
1001 | hex | |
37dd2bad | 1002 | default "0x00000000" |
cabb5587 SR |
1003 | endif |
1004 | ||
14cf11af PM |
1005 | source "net/Kconfig" |
1006 | ||
1007 | source "drivers/Kconfig" | |
1008 | ||
1009 | source "fs/Kconfig" | |
1010 | ||
98658538 LY |
1011 | source "arch/powerpc/sysdev/qe_lib/Kconfig" |
1012 | ||
14cf11af PM |
1013 | source "lib/Kconfig" |
1014 | ||
14cf11af PM |
1015 | source "arch/powerpc/Kconfig.debug" |
1016 | ||
1017 | source "security/Kconfig" | |
1018 | ||
1019 | config KEYS_COMPAT | |
1020 | bool | |
1021 | depends on COMPAT && KEYS | |
1022 | default y | |
1023 | ||
1024 | source "crypto/Kconfig" | |
6f668280 DP |
1025 | |
1026 | config PPC_CLOCK | |
1027 | bool | |
1028 | default n | |
9483a578 | 1029 | select HAVE_CLK |
1088a209 SM |
1030 | |
1031 | config PPC_LIB_RHEAP | |
1032 | bool | |
1033 | ||
bbf45ba5 | 1034 | source "arch/powerpc/kvm/Kconfig" |