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 | ||
14cf11af PM |
85 | config PPC |
86 | bool | |
87 | default y | |
d812c0e1 | 88 | select BINFMT_ELF |
10f85f43 | 89 | select OF |
e6ce1324 | 90 | select OF_EARLY_FLATTREE |
2b79d696 SR |
91 | select HAVE_FTRACE_MCOUNT_RECORD |
92 | select HAVE_DYNAMIC_FTRACE | |
606576ce | 93 | select HAVE_FUNCTION_TRACER |
60ce8f72 | 94 | select HAVE_FUNCTION_GRAPH_TRACER |
7ac57a89 | 95 | select SYSCTL_EXCEPTION_TRACE |
7444a72e | 96 | select ARCH_WANT_OPTIONAL_GPIOLIB |
4febd95a | 97 | select VIRT_TO_BUS if !PPC64 |
ec7748b5 | 98 | select HAVE_IDE |
a1f242ff | 99 | select HAVE_IOREMAP_PROT |
58340a07 | 100 | select HAVE_EFFICIENT_UNALIGNED_ACCESS |
3f550096 | 101 | select HAVE_KPROBES |
17ce452f | 102 | select HAVE_ARCH_KGDB |
9edddaa2 | 103 | select HAVE_KRETPROBES |
dec2b0d0 | 104 | select HAVE_ARCH_TRACEHOOK |
95f72d1e | 105 | select HAVE_MEMBLOCK |
1d7cfe18 | 106 | select HAVE_MEMBLOCK_NODE_MAP |
46bab4e4 | 107 | select HAVE_DMA_ATTRS |
80d3e8ab | 108 | select HAVE_DMA_API_DEBUG |
b7d7a240 | 109 | select USE_GENERIC_SMP_HELPERS if SMP |
4e491d14 | 110 | select HAVE_OPROFILE |
b69ec42b | 111 | select HAVE_DEBUG_KMEMLEAK |
c2e95c6d | 112 | select GENERIC_ATOMIC64 if PPC32 |
7463449b | 113 | select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE |
cdd6c482 | 114 | select HAVE_PERF_EVENTS |
359e4284 | 115 | select HAVE_REGS_AND_STACK_ACCESS_API |
5aae8a53 | 116 | select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 |
2604362b | 117 | select HAVE_GENERIC_HARDIRQS |
c1d7e01d | 118 | select ARCH_WANT_IPC_PARSE_VERSION |
ad5b7f13 | 119 | select SPARSE_IRQ |
cc79ca69 | 120 | select IRQ_DOMAIN |
433c9c67 TG |
121 | select GENERIC_IRQ_SHOW |
122 | select GENERIC_IRQ_SHOW_LEVEL | |
e8d2c473 | 123 | select IRQ_FORCED_THREADING |
26723911 | 124 | select HAVE_RCU_TABLE_FREE if SMP |
02424d89 | 125 | select HAVE_SYSCALL_TRACEPOINTS |
e47b65b0 | 126 | select HAVE_BPF_JIT if PPC64 |
ac5f89c7 | 127 | select HAVE_ARCH_JUMP_LABEL |
df013ffb | 128 | select ARCH_HAVE_NMI_SAFE_CMPXCHG |
17e32eac | 129 | select GENERIC_SMP_IDLE_THREAD |
b9ed27df | 130 | select GENERIC_CMOS_UPDATE |
70639421 | 131 | select GENERIC_TIME_VSYSCALL_OLD |
b9ed27df | 132 | select GENERIC_CLOCKEVENTS |
1629372c PM |
133 | select GENERIC_STRNCPY_FROM_USER |
134 | select GENERIC_STRNLEN_USER | |
786d35d4 DH |
135 | select HAVE_MOD_ARCH_SPECIFIC |
136 | select MODULES_USE_ELF_RELA | |
0bcfe540 | 137 | select CLONE_BACKWARDS |
fe3955cb | 138 | select ARCH_USE_BUILTIN_BSWAP |
0980caea | 139 | select OLD_SIGSUSPEND |
09a4d5d0 | 140 | select OLD_SIGACTION if PPC32 |
e6be7d31 | 141 | select ARCH_SUPPORTS_ATOMIC_RMW |
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 |
09a4d5d0 | 152 | select COMPAT_OLD_SIGACTION |
14cf11af PM |
153 | |
154 | config SYSVIPC_COMPAT | |
155 | bool | |
156 | depends on COMPAT && SYSVIPC | |
157 | default y | |
158 | ||
159 | # All PPC32s use generic nvram driver through ppc_md | |
160 | config GENERIC_NVRAM | |
161 | bool | |
162 | default y if PPC32 | |
163 | ||
ae1e9130 | 164 | config SCHED_OMIT_FRAME_POINTER |
14cf11af PM |
165 | bool |
166 | default y | |
167 | ||
168 | config ARCH_MAY_HAVE_PC_FDC | |
169 | bool | |
bed59275 | 170 | default !PPC_PSERIES || PCI |
14cf11af | 171 | |
08264cbc KG |
172 | config PPC_OF |
173 | def_bool y | |
174 | ||
175 | config PPC_UDBG_16550 | |
176 | bool | |
177 | default n | |
178 | ||
08264cbc KG |
179 | config GENERIC_TBSYNC |
180 | bool | |
181 | default y if PPC32 && SMP | |
182 | default n | |
183 | ||
e65e1fc2 AV |
184 | config AUDIT_ARCH |
185 | bool | |
186 | default y | |
187 | ||
73c9ceab JF |
188 | config GENERIC_BUG |
189 | bool | |
190 | default y | |
191 | depends on BUG | |
192 | ||
b3028878 | 193 | config SYS_SUPPORTS_APM_EMULATION |
58da10bb | 194 | default y if PMAC_APM_EMU |
b3028878 JB |
195 | bool |
196 | ||
6c5b59b9 DG |
197 | config EPAPR_BOOT |
198 | bool | |
199 | help | |
200 | Used to allow a board to specify it wants an ePAPR compliant wrapper. | |
201 | default n | |
202 | ||
f4fc4a5b KG |
203 | config DEFAULT_UIMAGE |
204 | bool | |
205 | help | |
206 | Used to allow a board to specify it wants a uImage built by default | |
207 | default n | |
208 | ||
b09c1644 SW |
209 | config REDBOOT |
210 | bool | |
211 | ||
801e4062 JB |
212 | config ARCH_HIBERNATION_POSSIBLE |
213 | bool | |
543b9fd3 JB |
214 | default y |
215 | ||
f4cb5700 JB |
216 | config ARCH_SUSPEND_POSSIBLE |
217 | def_bool y | |
4ffd6952 | 218 | depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ |
d0832a75 ZC |
219 | (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \ |
220 | || 44x || 40x | |
f4cb5700 | 221 | |
4c75a6f4 BH |
222 | config PPC_DCR_NATIVE |
223 | bool | |
224 | default n | |
225 | ||
226 | config PPC_DCR_MMIO | |
227 | bool | |
228 | default n | |
229 | ||
230 | config PPC_DCR | |
231 | bool | |
232 | depends on PPC_DCR_NATIVE || PPC_DCR_MMIO | |
233 | default y | |
234 | ||
4c9d2800 BH |
235 | config PPC_OF_PLATFORM_PCI |
236 | bool | |
373a6da1 | 237 | depends on PCI |
4c9d2800 BH |
238 | depends on PPC64 # not supported on 32 bits yet |
239 | default n | |
240 | ||
6a11f75b AM |
241 | config ARCH_SUPPORTS_DEBUG_PAGEALLOC |
242 | def_bool y | |
243 | ||
8b7b80b9 AM |
244 | config ARCH_SUPPORTS_UPROBES |
245 | def_bool y | |
246 | ||
172ae2e7 DK |
247 | config PPC_ADV_DEBUG_REGS |
248 | bool | |
249 | depends on 40x || BOOKE | |
250 | default y | |
251 | ||
252 | config PPC_ADV_DEBUG_IACS | |
253 | int | |
254 | depends on PPC_ADV_DEBUG_REGS | |
255 | default 4 if 44x | |
256 | default 2 | |
257 | ||
258 | config PPC_ADV_DEBUG_DACS | |
259 | int | |
260 | depends on PPC_ADV_DEBUG_REGS | |
261 | default 2 | |
262 | ||
263 | config PPC_ADV_DEBUG_DVCS | |
264 | int | |
265 | depends on PPC_ADV_DEBUG_REGS | |
266 | default 2 if 44x | |
267 | default 0 | |
268 | ||
269 | config PPC_ADV_DEBUG_DAC_RANGE | |
270 | bool | |
271 | depends on PPC_ADV_DEBUG_REGS && 44x | |
272 | default y | |
273 | ||
5e249d45 SP |
274 | config PPC_EMULATE_SSTEP |
275 | bool | |
276 | default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT | |
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 | ||
3d72bbc4 MN |
311 | config PPC_TRANSACTIONAL_MEM |
312 | bool "Transactional Memory support for POWERPC" | |
313 | depends on PPC_BOOK3S_64 | |
314 | depends on SMP | |
315 | default n | |
316 | ---help--- | |
317 | Support user-mode Transactional Memory on POWERPC. | |
318 | ||
5dd57a13 SW |
319 | config 8XX_MINIMAL_FPEMU |
320 | bool "Minimal math emulation for 8xx" | |
321 | depends on 8xx && !MATH_EMULATION | |
322 | help | |
323 | Older arch/ppc kernels still emulated a few floating point | |
324 | instructions such as load and store, even when full math | |
325 | emulation is disabled. Say "Y" here if you want to preserve | |
326 | this behavior. | |
327 | ||
328 | It is recommended that you build a soft-float userspace instead. | |
329 | ||
fb3475e9 FT |
330 | config IOMMU_HELPER |
331 | def_bool PPC64 | |
332 | ||
ec3cf2ec BB |
333 | config SWIOTLB |
334 | bool "SWIOTLB support" | |
335 | default n | |
336 | select IOMMU_HELPER | |
337 | ---help--- | |
338 | Support for IO bounce buffering for systems without an IOMMU. | |
339 | This allows us to DMA to the full physical address space on | |
340 | platforms where the size of a physical address is larger | |
341 | than the bus address. Not all platforms support this. | |
342 | ||
14cf11af PM |
343 | config HOTPLUG_CPU |
344 | bool "Support for enabling/disabling CPUs" | |
642e56ff | 345 | depends on SMP && HOTPLUG && (PPC_PSERIES || \ |
d0832a75 | 346 | PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC)) |
14cf11af PM |
347 | ---help--- |
348 | Say Y here to be able to disable and re-enable individual | |
349 | CPUs at runtime on SMP machines. | |
350 | ||
351 | Say N if you are unsure. | |
352 | ||
12633e80 NF |
353 | config ARCH_CPU_PROBE_RELEASE |
354 | def_bool y | |
355 | depends on HOTPLUG_CPU | |
356 | ||
cc57637b YG |
357 | config ARCH_ENABLE_MEMORY_HOTPLUG |
358 | def_bool y | |
359 | ||
a99824f3 BP |
360 | config ARCH_HAS_WALK_MEMORY |
361 | def_bool y | |
362 | ||
1482471d BP |
363 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
364 | def_bool y | |
365 | ||
14cf11af | 366 | config KEXEC |
642e56ff KC |
367 | bool "kexec system call" |
368 | depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) | |
14cf11af PM |
369 | help |
370 | kexec is a system call that implements the ability to shutdown your | |
371 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 372 | but it is independent of the system firmware. And like a reboot |
14cf11af PM |
373 | you can start any kernel with it, not just Linux. |
374 | ||
1f1332f7 | 375 | The name comes from the similarity to the exec system call. |
14cf11af PM |
376 | |
377 | It is an ongoing process to be certain the hardware in a machine | |
378 | is properly shutdown, so do not be surprised if this code does not | |
379 | initially work for you. It may help to enable device hotplugging | |
380 | support. As of this writing the exact hardware interface is | |
381 | strongly in flux, so no good recommendation can be made. | |
382 | ||
e8625d46 | 383 | config CRASH_DUMP |
3420b5da | 384 | bool "Build a kdump crash kernel" |
47da4219 | 385 | depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) |
5b2e478d | 386 | select RELOCATABLE if PPC64 || 44x |
0f890c8d | 387 | select DYNAMIC_MEMSTART if FSL_BOOKE |
e8625d46 HM |
388 | help |
389 | Build a kernel suitable for use as a kdump capture kernel. | |
54622f10 MK |
390 | The same kernel binary can be used as production kernel and dump |
391 | capture kernel. | |
e8625d46 | 392 | |
eb39c880 MS |
393 | config FA_DUMP |
394 | bool "Firmware-assisted dump" | |
395 | depends on PPC64 && PPC_RTAS && CRASH_DUMP | |
242f271c | 396 | help |
eb39c880 MS |
397 | A robust mechanism to get reliable kernel crash dump with |
398 | assistance from firmware. This approach does not use kexec, | |
399 | instead firmware assists in booting the kdump kernel | |
400 | while preserving memory contents. Firmware-assisted dump | |
401 | is meant to be a kdump replacement offering robustness and | |
402 | speed not possible without system firmware assistance. | |
242f271c MA |
403 | |
404 | If unsure, say "N" | |
405 | ||
14cf11af PM |
406 | config IRQ_ALL_CPUS |
407 | bool "Distribute interrupts on all CPUs by default" | |
408 | depends on SMP && !MV64360 | |
409 | help | |
410 | This option gives the kernel permission to distribute IRQs across | |
411 | multiple CPUs. Saying N here will route all IRQs to the first | |
412 | CPU. Generally saying Y is safe, although some problems have been | |
413 | reported with SMP Power Macintoshes with this option enabled. | |
414 | ||
ffa27b6b AW |
415 | config NUMA |
416 | bool "NUMA support" | |
417 | depends on PPC64 | |
418 | default y if SMP && PPC_PSERIES | |
419 | ||
c80d79d7 YG |
420 | config NODES_SHIFT |
421 | int | |
ea55bf29 | 422 | default "8" if PPC64 |
c80d79d7 YG |
423 | default "4" |
424 | depends on NEED_MULTIPLE_NODES | |
425 | ||
14cf11af PM |
426 | config ARCH_SELECT_MEMORY_MODEL |
427 | def_bool y | |
428 | depends on PPC64 | |
429 | ||
430 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
431 | def_bool y |
432 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 433 | |
45fb6cea | 434 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 435 | def_bool y |
9100b205 | 436 | depends on PPC64 |
d29eff7b | 437 | select SPARSEMEM_VMEMMAP_ENABLE |
14cf11af | 438 | |
45fb6cea | 439 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 440 | def_bool y |
78bde53e | 441 | depends on (SMP && PPC_PSERIES) || PPC_PS3 |
14cf11af | 442 | |
5a1eb5c4 | 443 | config SYS_SUPPORTS_HUGETLBFS |
41151e77 | 444 | bool |
5a1eb5c4 | 445 | |
c67c3cb4 | 446 | source "mm/Kconfig" |
14cf11af | 447 | |
7e9191da MK |
448 | config ARCH_MEMORY_PROBE |
449 | def_bool y | |
450 | depends on MEMORY_HOTPLUG | |
451 | ||
75167957 AW |
452 | # Some NUMA nodes have memory ranges that span |
453 | # other nodes. Even though a pfn is valid and | |
454 | # between a node's start and end pfns, it may not | |
455 | # reside on that node. See memmap_init_zone() | |
456 | # for details. | |
457 | config NODES_SPAN_OTHER_NODES | |
458 | def_bool y | |
459 | depends on NEED_MULTIPLE_NODES | |
460 | ||
16c2d476 BH |
461 | config PPC_HAS_HASH_64K |
462 | bool | |
463 | depends on PPC64 | |
464 | default n | |
465 | ||
e1240122 YT |
466 | config STDBINUTILS |
467 | bool "Using standard binutils settings" | |
468 | depends on 44x | |
469 | default y | |
470 | help | |
471 | Turning this option off allows you to select 256KB PAGE_SIZE on 44x. | |
472 | Note, that kernel will be able to run only those applications, | |
473 | which had been compiled using binutils later than 2.17.50.0.3 with | |
474 | '-zmax-page-size' set to 256K (the default is 64K). Or, if using | |
475 | the older binutils, you can patch them with a trivial patch, which | |
476 | changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. | |
477 | ||
ca9153a3 IY |
478 | choice |
479 | prompt "Page size" | |
480 | default PPC_4K_PAGES | |
3c726f8d | 481 | help |
ca9153a3 IY |
482 | Select the kernel logical page size. Increasing the page size |
483 | will reduce software overhead at each page boundary, allow | |
484 | hardware prefetch mechanisms to be more effective, and allow | |
485 | larger dma transfers increasing IO efficiency and reducing | |
486 | overhead. However the utilization of memory will increase. | |
487 | For example, each cached file will using a multiple of the | |
488 | page size to hold its contents and the difference between the | |
489 | end of file and the end of page is wasted. | |
490 | ||
491 | Some dedicated systems, such as software raid serving with | |
492 | accelerated calculations, have shown significant increases. | |
493 | ||
494 | If you configure a 64 bit kernel for 64k pages but the | |
495 | processor does not support them, then the kernel will simulate | |
496 | them with 4k pages, loading them on demand, but with the | |
497 | reduced software overhead and larger internal fragmentation. | |
498 | For the 32 bit kernel, a large page option will not be offered | |
499 | unless it is supported by the configured processor. | |
500 | ||
501 | If unsure, choose 4K_PAGES. | |
502 | ||
503 | config PPC_4K_PAGES | |
504 | bool "4k page size" | |
505 | ||
506 | config PPC_16K_PAGES | |
507 | bool "16k page size" if 44x | |
508 | ||
509 | config PPC_64K_PAGES | |
2d27cfd3 | 510 | bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 |
ca9153a3 IY |
511 | select PPC_HAS_HASH_64K if PPC_STD_MMU_64 |
512 | ||
e1240122 YT |
513 | config PPC_256K_PAGES |
514 | bool "256k page size" if 44x | |
adf213c4 | 515 | depends on !STDBINUTILS |
e1240122 YT |
516 | help |
517 | Make the page size 256k. | |
518 | ||
519 | As the ELF standard only requires alignment to support page | |
520 | sizes up to 64k, you will need to compile all of your user | |
521 | space applications with a non-standard binutils settings | |
522 | (see the STDBINUTILS description for details). | |
523 | ||
524 | Say N unless you know what you are doing. | |
525 | ||
ca9153a3 | 526 | endchoice |
3c726f8d | 527 | |
53bcddb9 SR |
528 | config FORCE_MAX_ZONEORDER |
529 | int "Maximum zone order" | |
066c4b87 BH |
530 | range 9 64 if PPC64 && PPC_64K_PAGES |
531 | default "9" if PPC64 && PPC_64K_PAGES | |
532 | range 13 64 if PPC64 && !PPC_64K_PAGES | |
533 | default "13" if PPC64 && !PPC_64K_PAGES | |
534 | range 9 64 if PPC32 && PPC_16K_PAGES | |
535 | default "9" if PPC32 && PPC_16K_PAGES | |
536 | range 7 64 if PPC32 && PPC_64K_PAGES | |
537 | default "7" if PPC32 && PPC_64K_PAGES | |
538 | range 5 64 if PPC32 && PPC_256K_PAGES | |
539 | default "5" if PPC32 && PPC_256K_PAGES | |
ebe40c5c | 540 | range 11 64 |
53bcddb9 SR |
541 | default "11" |
542 | help | |
543 | The kernel memory allocator divides physically contiguous memory | |
544 | blocks into "zones", where each zone is a power of two number of | |
545 | pages. This option selects the largest power of two that the kernel | |
546 | keeps in the memory allocator. If you need to allocate very large | |
547 | blocks of physically contiguous memory, then you may need to | |
548 | increase this value. | |
549 | ||
550 | This config option is actually maximum order plus one. For example, | |
551 | a value of 11 means that the largest free memory block is 2^10 pages. | |
552 | ||
553 | The page size is not necessarily 4KB. For example, on 64-bit | |
554 | systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep | |
555 | this in mind when choosing a value for this option. | |
556 | ||
fa28237c PM |
557 | config PPC_SUBPAGE_PROT |
558 | bool "Support setting protections for 4k subpages" | |
ca9153a3 | 559 | depends on PPC_STD_MMU_64 && PPC_64K_PAGES |
fa28237c PM |
560 | help |
561 | This option adds support for a system call to allow user programs | |
562 | to set access permissions (read/write, readonly, or no access) | |
563 | on the 4k subpages of each 64k page. | |
564 | ||
14cf11af PM |
565 | config SCHED_SMT |
566 | bool "SMT (Hyperthreading) scheduler support" | |
567 | depends on PPC64 && SMP | |
14cf11af PM |
568 | help |
569 | SMT scheduler support improves the CPU scheduler's decision making | |
570 | when dealing with POWER5 cpus at a cost of slightly increased | |
571 | overhead in some places. If unsure say N here. | |
572 | ||
b92a66a6 MN |
573 | config PPC_DENORMALISATION |
574 | bool "PowerPC denormalisation exception handling" | |
575 | depends on PPC_BOOK3S_64 | |
70aabee4 | 576 | default "y" if PPC_POWERNV |
b92a66a6 MN |
577 | ---help--- |
578 | Add support for handling denormalisation of single precision | |
579 | values. Useful for bare metal only. If unsure say Y here. | |
580 | ||
14cf11af PM |
581 | config CMDLINE_BOOL |
582 | bool "Default bootloader kernel arguments" | |
14cf11af PM |
583 | |
584 | config CMDLINE | |
585 | string "Initial kernel command string" | |
586 | depends on CMDLINE_BOOL | |
587 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
588 | help | |
589 | On some platforms, there is currently no way for the boot loader to | |
590 | pass arguments to the kernel. For these platforms, you can supply | |
591 | some command-line options at build time by entering them here. In | |
592 | most cases you will need to specify the root device here. | |
593 | ||
c356aa45 GL |
594 | config EXTRA_TARGETS |
595 | string "Additional default image types" | |
596 | help | |
597 | List additional targets to be built by the bootwrapper here (separated | |
598 | by spaces). This is useful for targets that depend of device tree | |
599 | files in the .dts directory. | |
600 | ||
601 | Targets in this list will be build as part of the default build | |
602 | target, or when the user does a 'make zImage' or a | |
603 | 'make zImage.initrd'. | |
604 | ||
605 | If unsure, leave blank | |
606 | ||
b28f5081 JB |
607 | config ARCH_WANTS_FREEZER_CONTROL |
608 | def_bool y | |
609 | depends on ADB_PMU | |
610 | ||
14cf11af | 611 | source kernel/power/Kconfig |
14cf11af PM |
612 | |
613 | config SECCOMP | |
614 | bool "Enable seccomp to safely compute untrusted bytecode" | |
615 | depends on PROC_FS | |
616 | default y | |
617 | help | |
618 | This kernel feature is useful for number crunching applications | |
619 | that may need to compute untrusted bytecode during their | |
620 | execution. By using pipes or other transports made available to | |
621 | the process as file descriptors supporting the read/write | |
622 | syscalls, it's possible to isolate those applications in | |
623 | their own address space using seccomp. Once seccomp is | |
624 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
625 | and the task is only allowed to execute a few safe syscalls | |
626 | defined by each seccomp mode. | |
627 | ||
628 | If unsure, say Y. Only embedded should say N here. | |
629 | ||
630 | endmenu | |
631 | ||
632 | config ISA_DMA_API | |
633 | bool | |
3d066d77 | 634 | default PCI |
14cf11af PM |
635 | |
636 | menu "Bus options" | |
637 | ||
638 | config ISA | |
639 | bool "Support for ISA-bus hardware" | |
933ee711 | 640 | depends on PPC_CHRP |
f9bd170a | 641 | select PPC_I8259 |
14cf11af PM |
642 | help |
643 | Find out whether you have ISA slots on your motherboard. ISA is the | |
644 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
645 | inside your box. If you have an Apple machine, say N here; if you | |
933ee711 PB |
646 | have an IBM RS/6000 or pSeries machine, say Y. If you have an |
647 | embedded board, consult your board documentation. | |
14cf11af | 648 | |
5ac6da66 CL |
649 | config ZONE_DMA |
650 | bool | |
651 | default y | |
652 | ||
af407c6d FT |
653 | config NEED_DMA_MAP_STATE |
654 | def_bool (PPC64 || NOT_COHERENT_CACHE) | |
655 | ||
e32205eb FT |
656 | config NEED_SG_DMA_LENGTH |
657 | def_bool y | |
658 | ||
14cf11af PM |
659 | config GENERIC_ISA_DMA |
660 | bool | |
1927445a | 661 | depends on ISA_DMA_API |
14cf11af PM |
662 | default y |
663 | ||
25635c71 PM |
664 | config PPC_INDIRECT_PCI |
665 | bool | |
666 | depends on PCI | |
63dafe57 | 667 | default y if 40x || 44x |
25635c71 PM |
668 | default n |
669 | ||
14cf11af PM |
670 | config EISA |
671 | bool | |
672 | ||
673 | config SBUS | |
674 | bool | |
675 | ||
08264cbc KG |
676 | config FSL_SOC |
677 | bool | |
b489da87 | 678 | select HAVE_CAN_FLEXCAN if NET && CAN |
08264cbc | 679 | |
55c44991 RZ |
680 | config FSL_PCI |
681 | bool | |
682 | select PPC_INDIRECT_PCI | |
d0839118 | 683 | select PCI_QUIRKS |
55c44991 | 684 | |
4ffd6952 AV |
685 | config FSL_PMC |
686 | bool | |
687 | default y | |
688 | depends on SUSPEND && (PPC_85xx || PPC_86xx) | |
689 | help | |
690 | Freescale MPC85xx/MPC86xx power management controller support | |
691 | (suspend/resume). For MPC83xx see platforms/83xx/suspend.c | |
692 | ||
d164f6d4 VG |
693 | config PPC4xx_CPM |
694 | bool | |
695 | default y | |
696 | depends on SUSPEND && (44x || 40x) | |
697 | help | |
698 | PPC4xx Clock Power Management (CPM) support (suspend/resume). | |
699 | It also enables support for two different idle states (idle-wait | |
700 | and idle-doze). | |
701 | ||
2a706919 SR |
702 | config 4xx_SOC |
703 | bool | |
704 | ||
acaa7aa3 | 705 | config FSL_LBC |
3ab8f2a2 RZ |
706 | bool "Freescale Local Bus support" |
707 | depends on FSL_SOC | |
acaa7aa3 | 708 | help |
3ab8f2a2 RZ |
709 | Enables reporting of errors from the Freescale local bus |
710 | controller. Also contains some common code used by | |
711 | drivers for specific local bus peripherals. | |
acaa7aa3 | 712 | |
a20cbdef PK |
713 | config FSL_IFC |
714 | bool | |
715 | depends on FSL_SOC | |
716 | ||
83ff9dcf AV |
717 | config FSL_GTM |
718 | bool | |
719 | depends on PPC_83xx || QUICC_ENGINE || CPM2 | |
720 | help | |
721 | Freescale General-purpose Timers support | |
722 | ||
14cf11af PM |
723 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
724 | config MCA | |
725 | bool | |
726 | ||
b500563b JR |
727 | # Platforms that what PCI turned unconditionally just do select PCI |
728 | # in their config node. Platforms that want to choose at config | |
729 | # time should select PPC_PCI_CHOICE | |
730 | config PPC_PCI_CHOICE | |
731 | bool | |
732 | ||
14cf11af | 733 | config PCI |
b500563b JR |
734 | bool "PCI support" if PPC_PCI_CHOICE |
735 | default y if !40x && !CPM2 && !8xx && !PPC_83xx \ | |
bcc48591 | 736 | && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON |
14cf11af | 737 | default PCI_QSPAN if !4xx && !CPM2 && 8xx |
df87ef55 | 738 | select ARCH_SUPPORTS_MSI |
335b8cf7 | 739 | select GENERIC_PCI_IOMAP |
14cf11af PM |
740 | help |
741 | Find out whether your system includes a PCI bus. PCI is the name of | |
742 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
743 | your box. If you say Y here, the kernel will include drivers and | |
744 | infrastructure code to support PCI bus devices. | |
745 | ||
746 | config PCI_DOMAINS | |
36e23590 MW |
747 | def_bool PCI |
748 | ||
749 | config PCI_SYSCALL | |
750 | def_bool PCI | |
14cf11af | 751 | |
14cf11af PM |
752 | config PCI_QSPAN |
753 | bool "QSpan PCI" | |
754 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 755 | select PPC_I8259 |
14cf11af PM |
756 | help |
757 | Say Y here if you have a system based on a Motorola 8xx-series | |
758 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
759 | ||
760 | config PCI_8260 | |
761 | bool | |
762 | depends on PCI && 8260 | |
25635c71 | 763 | select PPC_INDIRECT_PCI |
14cf11af PM |
764 | default y |
765 | ||
bb53bb3d JM |
766 | source "drivers/pci/pcie/Kconfig" |
767 | ||
14cf11af PM |
768 | source "drivers/pci/Kconfig" |
769 | ||
770 | source "drivers/pcmcia/Kconfig" | |
771 | ||
772 | source "drivers/pci/hotplug/Kconfig" | |
773 | ||
f1f389d5 ZW |
774 | config HAS_RAPIDIO |
775 | bool | |
776 | default n | |
777 | ||
778 | config RAPIDIO | |
779 | bool "RapidIO support" | |
388b78ad | 780 | depends on HAS_RAPIDIO || PCI |
f1f389d5 ZW |
781 | help |
782 | If you say Y here, the kernel will include drivers and | |
783 | infrastructure code to support RapidIO interconnect devices. | |
784 | ||
388b78ad AB |
785 | config FSL_RIO |
786 | bool "Freescale Embedded SRIO Controller support" | |
787 | depends on RAPIDIO && HAS_RAPIDIO | |
788 | default "n" | |
789 | ---help--- | |
790 | Include support for RapidIO controller on Freescale embedded | |
791 | processors (MPC8548, MPC8641, etc). | |
792 | ||
f1f389d5 ZW |
793 | source "drivers/rapidio/Kconfig" |
794 | ||
14cf11af PM |
795 | endmenu |
796 | ||
0f890c8d SP |
797 | config NONSTATIC_KERNEL |
798 | bool | |
799 | default n | |
800 | ||
14cf11af PM |
801 | menu "Advanced setup" |
802 | depends on PPC32 | |
803 | ||
804 | config ADVANCED_OPTIONS | |
805 | bool "Prompt for advanced kernel configuration options" | |
806 | help | |
807 | This option will enable prompting for a variety of advanced kernel | |
808 | configuration options. These options can cause the kernel to not | |
809 | work if they are set incorrectly, but can be used to optimize certain | |
810 | aspects of kernel memory management. | |
811 | ||
812 | Unless you know what you are doing, say N here. | |
813 | ||
814 | comment "Default settings for advanced configuration options are used" | |
815 | depends on !ADVANCED_OPTIONS | |
816 | ||
14cf11af PM |
817 | config LOWMEM_SIZE_BOOL |
818 | bool "Set maximum low memory" | |
819 | depends on ADVANCED_OPTIONS | |
820 | help | |
821 | This option allows you to set the maximum amount of memory which | |
822 | will be used as "low memory", that is, memory which the kernel can | |
823 | access directly, without having to set up a kernel virtual mapping. | |
824 | This can be useful in optimizing the layout of kernel virtual | |
825 | memory. | |
826 | ||
827 | Say N here unless you know what you are doing. | |
828 | ||
829 | config LOWMEM_SIZE | |
830 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
831 | default "0x30000000" | |
832 | ||
96051465 TP |
833 | config LOWMEM_CAM_NUM_BOOL |
834 | bool "Set number of CAMs to use to map low memory" | |
835 | depends on ADVANCED_OPTIONS && FSL_BOOKE | |
836 | help | |
837 | This option allows you to set the maximum number of CAM slots that | |
838 | will be used to map low memory. There are a limited number of slots | |
839 | available and even more limited number that will fit in the L1 MMU. | |
840 | However, using more entries will allow mapping more low memory. This | |
841 | can be useful in optimizing the layout of kernel virtual memory. | |
842 | ||
843 | Say N here unless you know what you are doing. | |
844 | ||
845 | config LOWMEM_CAM_NUM | |
9b71dbd3 | 846 | depends on FSL_BOOKE |
96051465 TP |
847 | int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL |
848 | default 3 | |
849 | ||
0f890c8d | 850 | config DYNAMIC_MEMSTART |
642e56ff KC |
851 | bool "Enable page aligned dynamic load address for kernel" |
852 | depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) | |
0f890c8d SP |
853 | select NONSTATIC_KERNEL |
854 | help | |
855 | This option enables the kernel to be loaded at any page aligned | |
856 | physical address. The kernel creates a mapping from KERNELBASE to | |
857 | the address where the kernel is loaded. The page size here implies | |
858 | the TLB page size of the mapping for kernel on the particular platform. | |
859 | Please refer to the init code for finding the TLB page size. | |
860 | ||
861 | DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE | |
862 | kernel image, where the only restriction is the page aligned kernel | |
863 | load address. When this option is enabled, the compile time physical | |
864 | address CONFIG_PHYSICAL_START is ignored. | |
865 | ||
9c5f7d39 SP |
866 | This option is overridden by CONFIG_RELOCATABLE |
867 | ||
37dd2bad | 868 | config RELOCATABLE |
642e56ff KC |
869 | bool "Build a relocatable kernel" |
870 | depends on ADVANCED_OPTIONS && FLATMEM && 44x | |
9c5f7d39 | 871 | select NONSTATIC_KERNEL |
37dd2bad KG |
872 | help |
873 | This builds a kernel image that is capable of running at the | |
9c5f7d39 SP |
874 | location the kernel is loaded at, without any alignment restrictions. |
875 | This feature is a superset of DYNAMIC_MEMSTART and hence overrides it. | |
37dd2bad KG |
876 | |
877 | One use is for the kexec on panic case where the recovery kernel | |
878 | must live at a different physical address than the primary | |
879 | kernel. | |
880 | ||
881 | Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address | |
882 | it has been loaded at and the compile time physical addresses | |
883 | CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START | |
884 | setting can still be useful to bootwrappers that need to know the | |
9c5f7d39 SP |
885 | load address of the kernel (eg. u-boot/mkimage). |
886 | ||
887 | config RELOCATABLE_PPC32 | |
888 | def_bool y | |
889 | depends on PPC32 && RELOCATABLE | |
37dd2bad KG |
890 | |
891 | config PAGE_OFFSET_BOOL | |
892 | bool "Set custom page offset address" | |
893 | depends on ADVANCED_OPTIONS | |
894 | help | |
895 | This option allows you to set the kernel virtual address at which | |
896 | the kernel will map low memory. This can be useful in optimizing | |
897 | the virtual memory layout of the system. | |
898 | ||
899 | Say N here unless you know what you are doing. | |
900 | ||
901 | config PAGE_OFFSET | |
902 | hex "Virtual address of memory base" if PAGE_OFFSET_BOOL | |
903 | default "0xc0000000" | |
904 | ||
14cf11af PM |
905 | config KERNEL_START_BOOL |
906 | bool "Set custom kernel base address" | |
907 | depends on ADVANCED_OPTIONS | |
908 | help | |
909 | This option allows you to set the kernel virtual address at which | |
37dd2bad KG |
910 | the kernel will be loaded. Normally this should match PAGE_OFFSET |
911 | however there are times (like kdump) that one might not want them | |
912 | to be the same. | |
14cf11af PM |
913 | |
914 | Say N here unless you know what you are doing. | |
915 | ||
916 | config KERNEL_START | |
917 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
37dd2bad | 918 | default PAGE_OFFSET if PAGE_OFFSET_BOOL |
0f890c8d | 919 | default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL |
14cf11af PM |
920 | default "0xc0000000" |
921 | ||
37dd2bad KG |
922 | config PHYSICAL_START_BOOL |
923 | bool "Set physical address where the kernel is loaded" | |
924 | depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
925 | help | |
926 | This gives the physical address where the kernel is loaded. | |
927 | ||
928 | Say N here unless you know what you are doing. | |
929 | ||
930 | config PHYSICAL_START | |
931 | hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL | |
0f890c8d | 932 | default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL |
37dd2bad KG |
933 | default "0x00000000" |
934 | ||
935 | config PHYSICAL_ALIGN | |
936 | hex | |
c8f3570b | 937 | default "0x04000000" if FSL_BOOKE |
37dd2bad KG |
938 | help |
939 | This value puts the alignment restrictions on physical address | |
940 | where kernel is loaded and run from. Kernel is compiled for an | |
941 | address which meets above alignment restriction. | |
942 | ||
14cf11af PM |
943 | config TASK_SIZE_BOOL |
944 | bool "Set custom user task size" | |
945 | depends on ADVANCED_OPTIONS | |
946 | help | |
947 | This option allows you to set the amount of virtual address space | |
948 | allocated to user tasks. This can be useful in optimizing the | |
949 | virtual memory layout of the system. | |
950 | ||
951 | Say N here unless you know what you are doing. | |
952 | ||
953 | config TASK_SIZE | |
954 | hex "Size of user task space" if TASK_SIZE_BOOL | |
933ee711 | 955 | default "0x80000000" if PPC_8xx |
4d9e5510 | 956 | default "0xc0000000" |
14cf11af | 957 | |
84532a0f BH |
958 | config CONSISTENT_SIZE_BOOL |
959 | bool "Set custom consistent memory pool size" | |
960 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
961 | help | |
962 | This option allows you to set the size of the | |
963 | consistent memory pool. This pool of virtual memory | |
964 | is used to make consistent memory allocations. | |
965 | ||
966 | config CONSISTENT_SIZE | |
967 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
968 | default "0x00200000" if NOT_COHERENT_CACHE | |
969 | ||
14cf11af PM |
970 | config PIN_TLB |
971 | bool "Pinned Kernel TLBs (860 ONLY)" | |
972 | depends on ADVANCED_OPTIONS && 8xx | |
973 | endmenu | |
974 | ||
cabb5587 | 975 | if PPC64 |
549e8152 PM |
976 | config RELOCATABLE |
977 | bool "Build a relocatable kernel" | |
0f890c8d | 978 | select NONSTATIC_KERNEL |
549e8152 PM |
979 | help |
980 | This builds a kernel image that is capable of running anywhere | |
981 | in the RMA (real memory area) at any 16k-aligned base address. | |
982 | The kernel is linked as a position-independent executable (PIE) | |
983 | and contains dynamic relocations which are processed early | |
984 | in the bootup process. | |
985 | ||
986 | One use is for the kexec on panic case where the recovery kernel | |
987 | must live at a different physical address than the primary | |
988 | kernel. | |
989 | ||
45fe50ea | 990 | # This value must have zeroes in the bottom 60 bits otherwise lots will break |
37dd2bad KG |
991 | config PAGE_OFFSET |
992 | hex | |
993 | default "0xc000000000000000" | |
cabb5587 SR |
994 | config KERNEL_START |
995 | hex | |
eeb2d218 | 996 | default "0xc000000000000000" |
37dd2bad KG |
997 | config PHYSICAL_START |
998 | hex | |
37dd2bad | 999 | default "0x00000000" |
cabb5587 SR |
1000 | endif |
1001 | ||
14cf11af PM |
1002 | source "net/Kconfig" |
1003 | ||
1004 | source "drivers/Kconfig" | |
1005 | ||
1006 | source "fs/Kconfig" | |
1007 | ||
98658538 LY |
1008 | source "arch/powerpc/sysdev/qe_lib/Kconfig" |
1009 | ||
14cf11af PM |
1010 | source "lib/Kconfig" |
1011 | ||
14cf11af PM |
1012 | source "arch/powerpc/Kconfig.debug" |
1013 | ||
1014 | source "security/Kconfig" | |
1015 | ||
1016 | config KEYS_COMPAT | |
1017 | bool | |
1018 | depends on COMPAT && KEYS | |
1019 | default y | |
1020 | ||
1021 | source "crypto/Kconfig" | |
6f668280 DP |
1022 | |
1023 | config PPC_CLOCK | |
1024 | bool | |
1025 | default n | |
9483a578 | 1026 | select HAVE_CLK |
1088a209 SM |
1027 | |
1028 | config PPC_LIB_RHEAP | |
1029 | bool | |
1030 | ||
bbf45ba5 | 1031 | source "arch/powerpc/kvm/Kconfig" |