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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 |
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 | |
58254e10 | 144 | select GENERIC_KERNEL_THREAD |
786d35d4 DH |
145 | select HAVE_MOD_ARCH_SPECIFIC |
146 | select MODULES_USE_ELF_RELA | |
138d1ce8 | 147 | select GENERIC_KERNEL_EXECVE |
14cf11af PM |
148 | |
149 | config EARLY_PRINTK | |
150 | bool | |
51d3082f | 151 | default y |
14cf11af PM |
152 | |
153 | config COMPAT | |
154 | bool | |
155 | default y if PPC64 | |
01e31dba | 156 | select COMPAT_BINFMT_ELF |
48b25c43 | 157 | select ARCH_WANT_OLD_COMPAT_IPC |
14cf11af PM |
158 | |
159 | config SYSVIPC_COMPAT | |
160 | bool | |
161 | depends on COMPAT && SYSVIPC | |
162 | default y | |
163 | ||
164 | # All PPC32s use generic nvram driver through ppc_md | |
165 | config GENERIC_NVRAM | |
166 | bool | |
167 | default y if PPC32 | |
168 | ||
ae1e9130 | 169 | config SCHED_OMIT_FRAME_POINTER |
14cf11af PM |
170 | bool |
171 | default y | |
172 | ||
173 | config ARCH_MAY_HAVE_PC_FDC | |
174 | bool | |
bed59275 | 175 | default !PPC_PSERIES || PCI |
14cf11af | 176 | |
08264cbc KG |
177 | config PPC_OF |
178 | def_bool y | |
179 | ||
180 | config PPC_UDBG_16550 | |
181 | bool | |
182 | default n | |
183 | ||
08264cbc KG |
184 | config GENERIC_TBSYNC |
185 | bool | |
186 | default y if PPC32 && SMP | |
187 | default n | |
188 | ||
e65e1fc2 AV |
189 | config AUDIT_ARCH |
190 | bool | |
191 | default y | |
192 | ||
73c9ceab JF |
193 | config GENERIC_BUG |
194 | bool | |
195 | default y | |
196 | depends on BUG | |
197 | ||
b3028878 | 198 | config SYS_SUPPORTS_APM_EMULATION |
58da10bb | 199 | default y if PMAC_APM_EMU |
b3028878 JB |
200 | bool |
201 | ||
6c5b59b9 DG |
202 | config EPAPR_BOOT |
203 | bool | |
204 | help | |
205 | Used to allow a board to specify it wants an ePAPR compliant wrapper. | |
206 | default n | |
207 | ||
f4fc4a5b KG |
208 | config DEFAULT_UIMAGE |
209 | bool | |
210 | help | |
211 | Used to allow a board to specify it wants a uImage built by default | |
212 | default n | |
213 | ||
b09c1644 SW |
214 | config REDBOOT |
215 | bool | |
216 | ||
801e4062 JB |
217 | config ARCH_HIBERNATION_POSSIBLE |
218 | bool | |
543b9fd3 JB |
219 | default y |
220 | ||
f4cb5700 JB |
221 | config ARCH_SUSPEND_POSSIBLE |
222 | def_bool y | |
4ffd6952 | 223 | depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ |
d0832a75 ZC |
224 | (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \ |
225 | || 44x || 40x | |
f4cb5700 | 226 | |
4c75a6f4 BH |
227 | config PPC_DCR_NATIVE |
228 | bool | |
229 | default n | |
230 | ||
231 | config PPC_DCR_MMIO | |
232 | bool | |
233 | default n | |
234 | ||
235 | config PPC_DCR | |
236 | bool | |
237 | depends on PPC_DCR_NATIVE || PPC_DCR_MMIO | |
238 | default y | |
239 | ||
4c9d2800 BH |
240 | config PPC_OF_PLATFORM_PCI |
241 | bool | |
373a6da1 | 242 | depends on PCI |
4c9d2800 BH |
243 | depends on PPC64 # not supported on 32 bits yet |
244 | default n | |
245 | ||
6a11f75b AM |
246 | config ARCH_SUPPORTS_DEBUG_PAGEALLOC |
247 | def_bool y | |
248 | ||
8b7b80b9 AM |
249 | config ARCH_SUPPORTS_UPROBES |
250 | def_bool y | |
251 | ||
172ae2e7 DK |
252 | config PPC_ADV_DEBUG_REGS |
253 | bool | |
254 | depends on 40x || BOOKE | |
255 | default y | |
256 | ||
257 | config PPC_ADV_DEBUG_IACS | |
258 | int | |
259 | depends on PPC_ADV_DEBUG_REGS | |
260 | default 4 if 44x | |
261 | default 2 | |
262 | ||
263 | config PPC_ADV_DEBUG_DACS | |
264 | int | |
265 | depends on PPC_ADV_DEBUG_REGS | |
266 | default 2 | |
267 | ||
268 | config PPC_ADV_DEBUG_DVCS | |
269 | int | |
270 | depends on PPC_ADV_DEBUG_REGS | |
271 | default 2 if 44x | |
272 | default 0 | |
273 | ||
274 | config PPC_ADV_DEBUG_DAC_RANGE | |
275 | bool | |
276 | depends on PPC_ADV_DEBUG_REGS && 44x | |
277 | default y | |
278 | ||
14cf11af PM |
279 | source "init/Kconfig" |
280 | ||
dc52ddc0 MH |
281 | source "kernel/Kconfig.freezer" |
282 | ||
a2d2e1ec | 283 | source "arch/powerpc/sysdev/Kconfig" |
4330f5da | 284 | source "arch/powerpc/platforms/Kconfig" |
14cf11af | 285 | |
14cf11af PM |
286 | menu "Kernel options" |
287 | ||
288 | config HIGHMEM | |
289 | bool "High memory support" | |
290 | depends on PPC32 | |
291 | ||
292 | source kernel/Kconfig.hz | |
293 | source kernel/Kconfig.preempt | |
294 | source "fs/Kconfig.binfmt" | |
295 | ||
ba72cb8c MG |
296 | config HUGETLB_PAGE_SIZE_VARIABLE |
297 | bool | |
298 | depends on HUGETLB_PAGE | |
299 | default y | |
300 | ||
14cf11af PM |
301 | config MATH_EMULATION |
302 | bool "Math emulation" | |
4d52719a | 303 | depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 |
14cf11af PM |
304 | ---help--- |
305 | Some PowerPC chips designed for embedded applications do not have | |
306 | a floating-point unit and therefore do not implement the | |
307 | floating-point instructions in the PowerPC instruction set. If you | |
308 | say Y here, the kernel will include code to emulate a floating-point | |
309 | unit, which will allow programs that use floating-point | |
310 | instructions to run. | |
311 | ||
5dd57a13 SW |
312 | config 8XX_MINIMAL_FPEMU |
313 | bool "Minimal math emulation for 8xx" | |
314 | depends on 8xx && !MATH_EMULATION | |
315 | help | |
316 | Older arch/ppc kernels still emulated a few floating point | |
317 | instructions such as load and store, even when full math | |
318 | emulation is disabled. Say "Y" here if you want to preserve | |
319 | this behavior. | |
320 | ||
321 | It is recommended that you build a soft-float userspace instead. | |
322 | ||
fb3475e9 FT |
323 | config IOMMU_HELPER |
324 | def_bool PPC64 | |
325 | ||
ec3cf2ec BB |
326 | config SWIOTLB |
327 | bool "SWIOTLB support" | |
328 | default n | |
329 | select IOMMU_HELPER | |
330 | ---help--- | |
331 | Support for IO bounce buffering for systems without an IOMMU. | |
332 | This allows us to DMA to the full physical address space on | |
333 | platforms where the size of a physical address is larger | |
334 | than the bus address. Not all platforms support this. | |
335 | ||
14cf11af PM |
336 | config HOTPLUG_CPU |
337 | bool "Support for enabling/disabling CPUs" | |
d0832a75 ZC |
338 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || \ |
339 | PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC)) | |
14cf11af PM |
340 | ---help--- |
341 | Say Y here to be able to disable and re-enable individual | |
342 | CPUs at runtime on SMP machines. | |
343 | ||
344 | Say N if you are unsure. | |
345 | ||
12633e80 NF |
346 | config ARCH_CPU_PROBE_RELEASE |
347 | def_bool y | |
348 | depends on HOTPLUG_CPU | |
349 | ||
cc57637b YG |
350 | config ARCH_ENABLE_MEMORY_HOTPLUG |
351 | def_bool y | |
352 | ||
a99824f3 BP |
353 | config ARCH_HAS_WALK_MEMORY |
354 | def_bool y | |
355 | ||
1482471d BP |
356 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
357 | def_bool y | |
358 | ||
14cf11af PM |
359 | config KEXEC |
360 | bool "kexec system call (EXPERIMENTAL)" | |
68343020 | 361 | depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) && EXPERIMENTAL |
14cf11af PM |
362 | help |
363 | kexec is a system call that implements the ability to shutdown your | |
364 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 365 | but it is independent of the system firmware. And like a reboot |
14cf11af PM |
366 | you can start any kernel with it, not just Linux. |
367 | ||
1f1332f7 | 368 | The name comes from the similarity to the exec system call. |
14cf11af PM |
369 | |
370 | It is an ongoing process to be certain the hardware in a machine | |
371 | is properly shutdown, so do not be surprised if this code does not | |
372 | initially work for you. It may help to enable device hotplugging | |
373 | support. As of this writing the exact hardware interface is | |
374 | strongly in flux, so no good recommendation can be made. | |
375 | ||
e8625d46 | 376 | config CRASH_DUMP |
3420b5da | 377 | bool "Build a kdump crash kernel" |
47da4219 | 378 | depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) |
5b2e478d | 379 | select RELOCATABLE if PPC64 || 44x |
0f890c8d | 380 | select DYNAMIC_MEMSTART if FSL_BOOKE |
e8625d46 HM |
381 | help |
382 | Build a kernel suitable for use as a kdump capture kernel. | |
54622f10 MK |
383 | The same kernel binary can be used as production kernel and dump |
384 | capture kernel. | |
e8625d46 | 385 | |
eb39c880 MS |
386 | config FA_DUMP |
387 | bool "Firmware-assisted dump" | |
388 | depends on PPC64 && PPC_RTAS && CRASH_DUMP | |
242f271c | 389 | help |
eb39c880 MS |
390 | A robust mechanism to get reliable kernel crash dump with |
391 | assistance from firmware. This approach does not use kexec, | |
392 | instead firmware assists in booting the kdump kernel | |
393 | while preserving memory contents. Firmware-assisted dump | |
394 | is meant to be a kdump replacement offering robustness and | |
395 | speed not possible without system firmware assistance. | |
242f271c MA |
396 | |
397 | If unsure, say "N" | |
398 | ||
14cf11af PM |
399 | config IRQ_ALL_CPUS |
400 | bool "Distribute interrupts on all CPUs by default" | |
401 | depends on SMP && !MV64360 | |
402 | help | |
403 | This option gives the kernel permission to distribute IRQs across | |
404 | multiple CPUs. Saying N here will route all IRQs to the first | |
405 | CPU. Generally saying Y is safe, although some problems have been | |
406 | reported with SMP Power Macintoshes with this option enabled. | |
407 | ||
ffa27b6b AW |
408 | config NUMA |
409 | bool "NUMA support" | |
410 | depends on PPC64 | |
411 | default y if SMP && PPC_PSERIES | |
412 | ||
c80d79d7 YG |
413 | config NODES_SHIFT |
414 | int | |
ea55bf29 | 415 | default "8" if PPC64 |
c80d79d7 YG |
416 | default "4" |
417 | depends on NEED_MULTIPLE_NODES | |
418 | ||
ea55bf29 AB |
419 | config MAX_ACTIVE_REGIONS |
420 | int | |
421 | default "256" if PPC64 | |
422 | default "32" | |
423 | ||
14cf11af PM |
424 | config ARCH_SELECT_MEMORY_MODEL |
425 | def_bool y | |
426 | depends on PPC64 | |
427 | ||
428 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
429 | def_bool y |
430 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 431 | |
45fb6cea | 432 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 433 | def_bool y |
9100b205 | 434 | depends on PPC64 |
d29eff7b | 435 | select SPARSEMEM_VMEMMAP_ENABLE |
14cf11af | 436 | |
45fb6cea | 437 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 438 | def_bool y |
78bde53e | 439 | depends on (SMP && PPC_PSERIES) || PPC_PS3 |
14cf11af | 440 | |
5a1eb5c4 | 441 | config SYS_SUPPORTS_HUGETLBFS |
41151e77 | 442 | bool |
5a1eb5c4 | 443 | |
c67c3cb4 | 444 | source "mm/Kconfig" |
14cf11af | 445 | |
7e9191da MK |
446 | config ARCH_MEMORY_PROBE |
447 | def_bool y | |
448 | depends on MEMORY_HOTPLUG | |
449 | ||
75167957 AW |
450 | # Some NUMA nodes have memory ranges that span |
451 | # other nodes. Even though a pfn is valid and | |
452 | # between a node's start and end pfns, it may not | |
453 | # reside on that node. See memmap_init_zone() | |
454 | # for details. | |
455 | config NODES_SPAN_OTHER_NODES | |
456 | def_bool y | |
457 | depends on NEED_MULTIPLE_NODES | |
458 | ||
16c2d476 BH |
459 | config PPC_HAS_HASH_64K |
460 | bool | |
461 | depends on PPC64 | |
462 | default n | |
463 | ||
e1240122 YT |
464 | config STDBINUTILS |
465 | bool "Using standard binutils settings" | |
466 | depends on 44x | |
467 | default y | |
468 | help | |
469 | Turning this option off allows you to select 256KB PAGE_SIZE on 44x. | |
470 | Note, that kernel will be able to run only those applications, | |
471 | which had been compiled using binutils later than 2.17.50.0.3 with | |
472 | '-zmax-page-size' set to 256K (the default is 64K). Or, if using | |
473 | the older binutils, you can patch them with a trivial patch, which | |
474 | changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. | |
475 | ||
ca9153a3 IY |
476 | choice |
477 | prompt "Page size" | |
478 | default PPC_4K_PAGES | |
3c726f8d | 479 | help |
ca9153a3 IY |
480 | Select the kernel logical page size. Increasing the page size |
481 | will reduce software overhead at each page boundary, allow | |
482 | hardware prefetch mechanisms to be more effective, and allow | |
483 | larger dma transfers increasing IO efficiency and reducing | |
484 | overhead. However the utilization of memory will increase. | |
485 | For example, each cached file will using a multiple of the | |
486 | page size to hold its contents and the difference between the | |
487 | end of file and the end of page is wasted. | |
488 | ||
489 | Some dedicated systems, such as software raid serving with | |
490 | accelerated calculations, have shown significant increases. | |
491 | ||
492 | If you configure a 64 bit kernel for 64k pages but the | |
493 | processor does not support them, then the kernel will simulate | |
494 | them with 4k pages, loading them on demand, but with the | |
495 | reduced software overhead and larger internal fragmentation. | |
496 | For the 32 bit kernel, a large page option will not be offered | |
497 | unless it is supported by the configured processor. | |
498 | ||
499 | If unsure, choose 4K_PAGES. | |
500 | ||
501 | config PPC_4K_PAGES | |
502 | bool "4k page size" | |
503 | ||
504 | config PPC_16K_PAGES | |
505 | bool "16k page size" if 44x | |
506 | ||
507 | config PPC_64K_PAGES | |
2d27cfd3 | 508 | bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 |
ca9153a3 IY |
509 | select PPC_HAS_HASH_64K if PPC_STD_MMU_64 |
510 | ||
e1240122 YT |
511 | config PPC_256K_PAGES |
512 | bool "256k page size" if 44x | |
adf213c4 | 513 | depends on !STDBINUTILS |
e1240122 YT |
514 | help |
515 | Make the page size 256k. | |
516 | ||
517 | As the ELF standard only requires alignment to support page | |
518 | sizes up to 64k, you will need to compile all of your user | |
519 | space applications with a non-standard binutils settings | |
520 | (see the STDBINUTILS description for details). | |
521 | ||
522 | Say N unless you know what you are doing. | |
523 | ||
ca9153a3 | 524 | endchoice |
3c726f8d | 525 | |
53bcddb9 SR |
526 | config FORCE_MAX_ZONEORDER |
527 | int "Maximum zone order" | |
066c4b87 BH |
528 | range 9 64 if PPC64 && PPC_64K_PAGES |
529 | default "9" if PPC64 && PPC_64K_PAGES | |
530 | range 13 64 if PPC64 && !PPC_64K_PAGES | |
531 | default "13" if PPC64 && !PPC_64K_PAGES | |
532 | range 9 64 if PPC32 && PPC_16K_PAGES | |
533 | default "9" if PPC32 && PPC_16K_PAGES | |
534 | range 7 64 if PPC32 && PPC_64K_PAGES | |
535 | default "7" if PPC32 && PPC_64K_PAGES | |
536 | range 5 64 if PPC32 && PPC_256K_PAGES | |
537 | default "5" if PPC32 && PPC_256K_PAGES | |
ebe40c5c | 538 | range 11 64 |
53bcddb9 SR |
539 | default "11" |
540 | help | |
541 | The kernel memory allocator divides physically contiguous memory | |
542 | blocks into "zones", where each zone is a power of two number of | |
543 | pages. This option selects the largest power of two that the kernel | |
544 | keeps in the memory allocator. If you need to allocate very large | |
545 | blocks of physically contiguous memory, then you may need to | |
546 | increase this value. | |
547 | ||
548 | This config option is actually maximum order plus one. For example, | |
549 | a value of 11 means that the largest free memory block is 2^10 pages. | |
550 | ||
551 | The page size is not necessarily 4KB. For example, on 64-bit | |
552 | systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep | |
553 | this in mind when choosing a value for this option. | |
554 | ||
fa28237c PM |
555 | config PPC_SUBPAGE_PROT |
556 | bool "Support setting protections for 4k subpages" | |
ca9153a3 | 557 | depends on PPC_STD_MMU_64 && PPC_64K_PAGES |
fa28237c PM |
558 | help |
559 | This option adds support for a system call to allow user programs | |
560 | to set access permissions (read/write, readonly, or no access) | |
561 | on the 4k subpages of each 64k page. | |
562 | ||
14cf11af PM |
563 | config SCHED_SMT |
564 | bool "SMT (Hyperthreading) scheduler support" | |
565 | depends on PPC64 && SMP | |
14cf11af PM |
566 | help |
567 | SMT scheduler support improves the CPU scheduler's decision making | |
568 | when dealing with POWER5 cpus at a cost of slightly increased | |
569 | overhead in some places. If unsure say N here. | |
570 | ||
b92a66a6 MN |
571 | config PPC_DENORMALISATION |
572 | bool "PowerPC denormalisation exception handling" | |
573 | depends on PPC_BOOK3S_64 | |
574 | default "n" | |
575 | ---help--- | |
576 | Add support for handling denormalisation of single precision | |
577 | values. Useful for bare metal only. If unsure say Y here. | |
578 | ||
14cf11af PM |
579 | config CMDLINE_BOOL |
580 | bool "Default bootloader kernel arguments" | |
14cf11af PM |
581 | |
582 | config CMDLINE | |
583 | string "Initial kernel command string" | |
584 | depends on CMDLINE_BOOL | |
585 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
586 | help | |
587 | On some platforms, there is currently no way for the boot loader to | |
588 | pass arguments to the kernel. For these platforms, you can supply | |
589 | some command-line options at build time by entering them here. In | |
590 | most cases you will need to specify the root device here. | |
591 | ||
c356aa45 GL |
592 | config EXTRA_TARGETS |
593 | string "Additional default image types" | |
594 | help | |
595 | List additional targets to be built by the bootwrapper here (separated | |
596 | by spaces). This is useful for targets that depend of device tree | |
597 | files in the .dts directory. | |
598 | ||
599 | Targets in this list will be build as part of the default build | |
600 | target, or when the user does a 'make zImage' or a | |
601 | 'make zImage.initrd'. | |
602 | ||
603 | If unsure, leave blank | |
604 | ||
b28f5081 JB |
605 | config ARCH_WANTS_FREEZER_CONTROL |
606 | def_bool y | |
607 | depends on ADB_PMU | |
608 | ||
14cf11af | 609 | source kernel/power/Kconfig |
14cf11af PM |
610 | |
611 | config SECCOMP | |
612 | bool "Enable seccomp to safely compute untrusted bytecode" | |
613 | depends on PROC_FS | |
614 | default y | |
615 | help | |
616 | This kernel feature is useful for number crunching applications | |
617 | that may need to compute untrusted bytecode during their | |
618 | execution. By using pipes or other transports made available to | |
619 | the process as file descriptors supporting the read/write | |
620 | syscalls, it's possible to isolate those applications in | |
621 | their own address space using seccomp. Once seccomp is | |
622 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
623 | and the task is only allowed to execute a few safe syscalls | |
624 | defined by each seccomp mode. | |
625 | ||
626 | If unsure, say Y. Only embedded should say N here. | |
627 | ||
628 | endmenu | |
629 | ||
630 | config ISA_DMA_API | |
631 | bool | |
3d066d77 | 632 | default PCI |
14cf11af PM |
633 | |
634 | menu "Bus options" | |
635 | ||
636 | config ISA | |
637 | bool "Support for ISA-bus hardware" | |
638 | depends on PPC_PREP || PPC_CHRP | |
f9bd170a | 639 | select PPC_I8259 |
14cf11af PM |
640 | help |
641 | Find out whether you have ISA slots on your motherboard. ISA is the | |
642 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
643 | inside your box. If you have an Apple machine, say N here; if you | |
644 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If | |
645 | you have an embedded board, consult your board documentation. | |
646 | ||
5ac6da66 CL |
647 | config ZONE_DMA |
648 | bool | |
649 | default y | |
650 | ||
af407c6d FT |
651 | config NEED_DMA_MAP_STATE |
652 | def_bool (PPC64 || NOT_COHERENT_CACHE) | |
653 | ||
e32205eb FT |
654 | config NEED_SG_DMA_LENGTH |
655 | def_bool y | |
656 | ||
14cf11af PM |
657 | config GENERIC_ISA_DMA |
658 | bool | |
1927445a | 659 | depends on ISA_DMA_API |
14cf11af PM |
660 | default y |
661 | ||
25635c71 PM |
662 | config PPC_INDIRECT_PCI |
663 | bool | |
664 | depends on PCI | |
63dafe57 | 665 | default y if 40x || 44x |
25635c71 PM |
666 | default n |
667 | ||
14cf11af PM |
668 | config EISA |
669 | bool | |
670 | ||
671 | config SBUS | |
672 | bool | |
673 | ||
08264cbc KG |
674 | config FSL_SOC |
675 | bool | |
b489da87 | 676 | select HAVE_CAN_FLEXCAN if NET && CAN |
6d4ae2dd | 677 | select PPC_CLOCK |
08264cbc | 678 | |
55c44991 RZ |
679 | config FSL_PCI |
680 | bool | |
681 | select PPC_INDIRECT_PCI | |
d0839118 | 682 | select PCI_QUIRKS |
55c44991 | 683 | |
4ffd6952 AV |
684 | config FSL_PMC |
685 | bool | |
686 | default y | |
687 | depends on SUSPEND && (PPC_85xx || PPC_86xx) | |
688 | help | |
689 | Freescale MPC85xx/MPC86xx power management controller support | |
690 | (suspend/resume). For MPC83xx see platforms/83xx/suspend.c | |
691 | ||
d164f6d4 VG |
692 | config PPC4xx_CPM |
693 | bool | |
694 | default y | |
695 | depends on SUSPEND && (44x || 40x) | |
696 | help | |
697 | PPC4xx Clock Power Management (CPM) support (suspend/resume). | |
698 | It also enables support for two different idle states (idle-wait | |
699 | and idle-doze). | |
700 | ||
2a706919 SR |
701 | config 4xx_SOC |
702 | bool | |
703 | ||
acaa7aa3 | 704 | config FSL_LBC |
3ab8f2a2 RZ |
705 | bool "Freescale Local Bus support" |
706 | depends on FSL_SOC | |
acaa7aa3 | 707 | help |
3ab8f2a2 RZ |
708 | Enables reporting of errors from the Freescale local bus |
709 | controller. Also contains some common code used by | |
710 | drivers for specific local bus peripherals. | |
acaa7aa3 | 711 | |
a20cbdef PK |
712 | config FSL_IFC |
713 | bool | |
714 | depends on FSL_SOC | |
715 | ||
83ff9dcf AV |
716 | config FSL_GTM |
717 | bool | |
718 | depends on PPC_83xx || QUICC_ENGINE || CPM2 | |
719 | help | |
720 | Freescale General-purpose Timers support | |
721 | ||
14cf11af PM |
722 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
723 | config MCA | |
724 | bool | |
725 | ||
b500563b JR |
726 | # Platforms that what PCI turned unconditionally just do select PCI |
727 | # in their config node. Platforms that want to choose at config | |
728 | # time should select PPC_PCI_CHOICE | |
729 | config PPC_PCI_CHOICE | |
730 | bool | |
731 | ||
14cf11af | 732 | config PCI |
b500563b JR |
733 | bool "PCI support" if PPC_PCI_CHOICE |
734 | default y if !40x && !CPM2 && !8xx && !PPC_83xx \ | |
bcc48591 | 735 | && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON |
f21f49ea | 736 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx |
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 | ||
766 | config 8260_PCI9 | |
4a3ecc62 | 767 | bool "Enable workaround for MPC826x erratum PCI 9" |
e00c5498 | 768 | depends on PCI_8260 && !8272 |
14cf11af PM |
769 | default y |
770 | ||
bb53bb3d JM |
771 | source "drivers/pci/pcie/Kconfig" |
772 | ||
14cf11af PM |
773 | source "drivers/pci/Kconfig" |
774 | ||
775 | source "drivers/pcmcia/Kconfig" | |
776 | ||
777 | source "drivers/pci/hotplug/Kconfig" | |
778 | ||
f1f389d5 ZW |
779 | config HAS_RAPIDIO |
780 | bool | |
781 | default n | |
782 | ||
783 | config RAPIDIO | |
784 | bool "RapidIO support" | |
388b78ad | 785 | depends on HAS_RAPIDIO || PCI |
f1f389d5 ZW |
786 | help |
787 | If you say Y here, the kernel will include drivers and | |
788 | infrastructure code to support RapidIO interconnect devices. | |
789 | ||
388b78ad AB |
790 | config FSL_RIO |
791 | bool "Freescale Embedded SRIO Controller support" | |
792 | depends on RAPIDIO && HAS_RAPIDIO | |
793 | default "n" | |
794 | ---help--- | |
795 | Include support for RapidIO controller on Freescale embedded | |
796 | processors (MPC8548, MPC8641, etc). | |
797 | ||
f1f389d5 ZW |
798 | source "drivers/rapidio/Kconfig" |
799 | ||
14cf11af PM |
800 | endmenu |
801 | ||
0f890c8d SP |
802 | config NONSTATIC_KERNEL |
803 | bool | |
804 | default n | |
805 | ||
14cf11af PM |
806 | menu "Advanced setup" |
807 | depends on PPC32 | |
808 | ||
809 | config ADVANCED_OPTIONS | |
810 | bool "Prompt for advanced kernel configuration options" | |
811 | help | |
812 | This option will enable prompting for a variety of advanced kernel | |
813 | configuration options. These options can cause the kernel to not | |
814 | work if they are set incorrectly, but can be used to optimize certain | |
815 | aspects of kernel memory management. | |
816 | ||
817 | Unless you know what you are doing, say N here. | |
818 | ||
819 | comment "Default settings for advanced configuration options are used" | |
820 | depends on !ADVANCED_OPTIONS | |
821 | ||
14cf11af PM |
822 | config LOWMEM_SIZE_BOOL |
823 | bool "Set maximum low memory" | |
824 | depends on ADVANCED_OPTIONS | |
825 | help | |
826 | This option allows you to set the maximum amount of memory which | |
827 | will be used as "low memory", that is, memory which the kernel can | |
828 | access directly, without having to set up a kernel virtual mapping. | |
829 | This can be useful in optimizing the layout of kernel virtual | |
830 | memory. | |
831 | ||
832 | Say N here unless you know what you are doing. | |
833 | ||
834 | config LOWMEM_SIZE | |
835 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
836 | default "0x30000000" | |
837 | ||
96051465 TP |
838 | config LOWMEM_CAM_NUM_BOOL |
839 | bool "Set number of CAMs to use to map low memory" | |
840 | depends on ADVANCED_OPTIONS && FSL_BOOKE | |
841 | help | |
842 | This option allows you to set the maximum number of CAM slots that | |
843 | will be used to map low memory. There are a limited number of slots | |
844 | available and even more limited number that will fit in the L1 MMU. | |
845 | However, using more entries will allow mapping more low memory. This | |
846 | can be useful in optimizing the layout of kernel virtual memory. | |
847 | ||
848 | Say N here unless you know what you are doing. | |
849 | ||
850 | config LOWMEM_CAM_NUM | |
9b71dbd3 | 851 | depends on FSL_BOOKE |
96051465 TP |
852 | int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL |
853 | default 3 | |
854 | ||
0f890c8d SP |
855 | config DYNAMIC_MEMSTART |
856 | bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)" | |
23913245 | 857 | depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) |
0f890c8d SP |
858 | select NONSTATIC_KERNEL |
859 | help | |
860 | This option enables the kernel to be loaded at any page aligned | |
861 | physical address. The kernel creates a mapping from KERNELBASE to | |
862 | the address where the kernel is loaded. The page size here implies | |
863 | the TLB page size of the mapping for kernel on the particular platform. | |
864 | Please refer to the init code for finding the TLB page size. | |
865 | ||
866 | DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE | |
867 | kernel image, where the only restriction is the page aligned kernel | |
868 | load address. When this option is enabled, the compile time physical | |
869 | address CONFIG_PHYSICAL_START is ignored. | |
870 | ||
9c5f7d39 SP |
871 | This option is overridden by CONFIG_RELOCATABLE |
872 | ||
37dd2bad KG |
873 | config RELOCATABLE |
874 | bool "Build a relocatable kernel (EXPERIMENTAL)" | |
26ecb6c4 | 875 | depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x |
9c5f7d39 | 876 | select NONSTATIC_KERNEL |
37dd2bad KG |
877 | help |
878 | This builds a kernel image that is capable of running at the | |
9c5f7d39 SP |
879 | location the kernel is loaded at, without any alignment restrictions. |
880 | This feature is a superset of DYNAMIC_MEMSTART and hence overrides it. | |
37dd2bad KG |
881 | |
882 | One use is for the kexec on panic case where the recovery kernel | |
883 | must live at a different physical address than the primary | |
884 | kernel. | |
885 | ||
886 | Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address | |
887 | it has been loaded at and the compile time physical addresses | |
888 | CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START | |
889 | setting can still be useful to bootwrappers that need to know the | |
9c5f7d39 SP |
890 | load address of the kernel (eg. u-boot/mkimage). |
891 | ||
892 | config RELOCATABLE_PPC32 | |
893 | def_bool y | |
894 | depends on PPC32 && RELOCATABLE | |
37dd2bad KG |
895 | |
896 | config PAGE_OFFSET_BOOL | |
897 | bool "Set custom page offset address" | |
898 | depends on ADVANCED_OPTIONS | |
899 | help | |
900 | This option allows you to set the kernel virtual address at which | |
901 | the kernel will map low memory. This can be useful in optimizing | |
902 | the virtual memory layout of the system. | |
903 | ||
904 | Say N here unless you know what you are doing. | |
905 | ||
906 | config PAGE_OFFSET | |
907 | hex "Virtual address of memory base" if PAGE_OFFSET_BOOL | |
908 | default "0xc0000000" | |
909 | ||
14cf11af PM |
910 | config KERNEL_START_BOOL |
911 | bool "Set custom kernel base address" | |
912 | depends on ADVANCED_OPTIONS | |
913 | help | |
914 | This option allows you to set the kernel virtual address at which | |
37dd2bad KG |
915 | the kernel will be loaded. Normally this should match PAGE_OFFSET |
916 | however there are times (like kdump) that one might not want them | |
917 | to be the same. | |
14cf11af PM |
918 | |
919 | Say N here unless you know what you are doing. | |
920 | ||
921 | config KERNEL_START | |
922 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
37dd2bad | 923 | default PAGE_OFFSET if PAGE_OFFSET_BOOL |
0f890c8d | 924 | default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL |
14cf11af PM |
925 | default "0xc0000000" |
926 | ||
37dd2bad KG |
927 | config PHYSICAL_START_BOOL |
928 | bool "Set physical address where the kernel is loaded" | |
929 | depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
930 | help | |
931 | This gives the physical address where the kernel is loaded. | |
932 | ||
933 | Say N here unless you know what you are doing. | |
934 | ||
935 | config PHYSICAL_START | |
936 | hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL | |
0f890c8d | 937 | default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL |
37dd2bad KG |
938 | default "0x00000000" |
939 | ||
940 | config PHYSICAL_ALIGN | |
941 | hex | |
c8f3570b | 942 | default "0x04000000" if FSL_BOOKE |
37dd2bad KG |
943 | help |
944 | This value puts the alignment restrictions on physical address | |
945 | where kernel is loaded and run from. Kernel is compiled for an | |
946 | address which meets above alignment restriction. | |
947 | ||
14cf11af PM |
948 | config TASK_SIZE_BOOL |
949 | bool "Set custom user task size" | |
950 | depends on ADVANCED_OPTIONS | |
951 | help | |
952 | This option allows you to set the amount of virtual address space | |
953 | allocated to user tasks. This can be useful in optimizing the | |
954 | virtual memory layout of the system. | |
955 | ||
956 | Say N here unless you know what you are doing. | |
957 | ||
958 | config TASK_SIZE | |
959 | hex "Size of user task space" if TASK_SIZE_BOOL | |
4d9e5510 KG |
960 | default "0x80000000" if PPC_PREP || PPC_8xx |
961 | default "0xc0000000" | |
14cf11af | 962 | |
84532a0f BH |
963 | config CONSISTENT_SIZE_BOOL |
964 | bool "Set custom consistent memory pool size" | |
965 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
966 | help | |
967 | This option allows you to set the size of the | |
968 | consistent memory pool. This pool of virtual memory | |
969 | is used to make consistent memory allocations. | |
970 | ||
971 | config CONSISTENT_SIZE | |
972 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
973 | default "0x00200000" if NOT_COHERENT_CACHE | |
974 | ||
14cf11af PM |
975 | config PIN_TLB |
976 | bool "Pinned Kernel TLBs (860 ONLY)" | |
977 | depends on ADVANCED_OPTIONS && 8xx | |
978 | endmenu | |
979 | ||
cabb5587 | 980 | if PPC64 |
549e8152 PM |
981 | config RELOCATABLE |
982 | bool "Build a relocatable kernel" | |
0f890c8d | 983 | select NONSTATIC_KERNEL |
549e8152 PM |
984 | help |
985 | This builds a kernel image that is capable of running anywhere | |
986 | in the RMA (real memory area) at any 16k-aligned base address. | |
987 | The kernel is linked as a position-independent executable (PIE) | |
988 | and contains dynamic relocations which are processed early | |
989 | in the bootup process. | |
990 | ||
991 | One use is for the kexec on panic case where the recovery kernel | |
992 | must live at a different physical address than the primary | |
993 | kernel. | |
994 | ||
37dd2bad KG |
995 | config PAGE_OFFSET |
996 | hex | |
997 | default "0xc000000000000000" | |
cabb5587 SR |
998 | config KERNEL_START |
999 | hex | |
eeb2d218 | 1000 | default "0xc000000000000000" |
37dd2bad KG |
1001 | config PHYSICAL_START |
1002 | hex | |
37dd2bad | 1003 | default "0x00000000" |
cabb5587 SR |
1004 | endif |
1005 | ||
14cf11af PM |
1006 | source "net/Kconfig" |
1007 | ||
1008 | source "drivers/Kconfig" | |
1009 | ||
1010 | source "fs/Kconfig" | |
1011 | ||
98658538 LY |
1012 | source "arch/powerpc/sysdev/qe_lib/Kconfig" |
1013 | ||
14cf11af PM |
1014 | source "lib/Kconfig" |
1015 | ||
14cf11af PM |
1016 | source "arch/powerpc/Kconfig.debug" |
1017 | ||
1018 | source "security/Kconfig" | |
1019 | ||
1020 | config KEYS_COMPAT | |
1021 | bool | |
1022 | depends on COMPAT && KEYS | |
1023 | default y | |
1024 | ||
1025 | source "crypto/Kconfig" | |
6f668280 DP |
1026 | |
1027 | config PPC_CLOCK | |
1028 | bool | |
1029 | default n | |
9483a578 | 1030 | select HAVE_CLK |
1088a209 SM |
1031 | |
1032 | config PPC_LIB_RHEAP | |
1033 | bool | |
1034 | ||
bbf45ba5 | 1035 | source "arch/powerpc/kvm/Kconfig" |