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 | |
b7e7c37b | 88 | select ARCH_MIGHT_HAVE_PC_PARPORT |
d812c0e1 | 89 | select BINFMT_ELF |
10f85f43 | 90 | select OF |
e6ce1324 | 91 | select OF_EARLY_FLATTREE |
2b79d696 SR |
92 | select HAVE_FTRACE_MCOUNT_RECORD |
93 | select HAVE_DYNAMIC_FTRACE | |
606576ce | 94 | select HAVE_FUNCTION_TRACER |
60ce8f72 | 95 | select HAVE_FUNCTION_GRAPH_TRACER |
7ac57a89 | 96 | select SYSCTL_EXCEPTION_TRACE |
7444a72e | 97 | select ARCH_WANT_OPTIONAL_GPIOLIB |
4febd95a | 98 | select VIRT_TO_BUS if !PPC64 |
ec7748b5 | 99 | select HAVE_IDE |
a1f242ff | 100 | select HAVE_IOREMAP_PROT |
0b5e6661 | 101 | select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN |
3f550096 | 102 | select HAVE_KPROBES |
17ce452f | 103 | select HAVE_ARCH_KGDB |
9edddaa2 | 104 | select HAVE_KRETPROBES |
dec2b0d0 | 105 | select HAVE_ARCH_TRACEHOOK |
95f72d1e | 106 | select HAVE_MEMBLOCK |
1d7cfe18 | 107 | select HAVE_MEMBLOCK_NODE_MAP |
46bab4e4 | 108 | select HAVE_DMA_ATTRS |
80d3e8ab | 109 | select HAVE_DMA_API_DEBUG |
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 |
c1d7e01d | 117 | select ARCH_WANT_IPC_PARSE_VERSION |
ad5b7f13 | 118 | select SPARSE_IRQ |
cc79ca69 | 119 | select IRQ_DOMAIN |
433c9c67 TG |
120 | select GENERIC_IRQ_SHOW |
121 | select GENERIC_IRQ_SHOW_LEVEL | |
e8d2c473 | 122 | select IRQ_FORCED_THREADING |
26723911 | 123 | select HAVE_RCU_TABLE_FREE if SMP |
02424d89 | 124 | select HAVE_SYSCALL_TRACEPOINTS |
e47b65b0 | 125 | select HAVE_BPF_JIT if PPC64 |
ac5f89c7 | 126 | select HAVE_ARCH_JUMP_LABEL |
df013ffb | 127 | select ARCH_HAVE_NMI_SAFE_CMPXCHG |
17e32eac | 128 | select GENERIC_SMP_IDLE_THREAD |
b9ed27df | 129 | select GENERIC_CMOS_UPDATE |
70639421 | 130 | select GENERIC_TIME_VSYSCALL_OLD |
b9ed27df | 131 | select GENERIC_CLOCKEVENTS |
1629372c PM |
132 | select GENERIC_STRNCPY_FROM_USER |
133 | select GENERIC_STRNLEN_USER | |
786d35d4 DH |
134 | select HAVE_MOD_ARCH_SPECIFIC |
135 | select MODULES_USE_ELF_RELA | |
0bcfe540 | 136 | select CLONE_BACKWARDS |
fe3955cb | 137 | select ARCH_USE_BUILTIN_BSWAP |
0980caea | 138 | select OLD_SIGSUSPEND |
09a4d5d0 | 139 | select OLD_SIGACTION if PPC32 |
d1a1dc0b | 140 | select HAVE_DEBUG_STACKOVERFLOW |
62d26c82 | 141 | select HAVE_IRQ_EXIT_ON_IRQ_STACK |
14cf11af | 142 | |
7a332b0c AB |
143 | config GENERIC_CSUM |
144 | def_bool CPU_LITTLE_ENDIAN | |
145 | ||
14cf11af PM |
146 | config EARLY_PRINTK |
147 | bool | |
51d3082f | 148 | default y |
14cf11af PM |
149 | |
150 | config COMPAT | |
151 | bool | |
152 | default y if PPC64 | |
01e31dba | 153 | select COMPAT_BINFMT_ELF |
48b25c43 | 154 | select ARCH_WANT_OLD_COMPAT_IPC |
09a4d5d0 | 155 | select COMPAT_OLD_SIGACTION |
14cf11af PM |
156 | |
157 | config SYSVIPC_COMPAT | |
158 | bool | |
159 | depends on COMPAT && SYSVIPC | |
160 | default y | |
161 | ||
162 | # All PPC32s use generic nvram driver through ppc_md | |
163 | config GENERIC_NVRAM | |
164 | bool | |
165 | default y if PPC32 | |
166 | ||
ae1e9130 | 167 | config SCHED_OMIT_FRAME_POINTER |
14cf11af PM |
168 | bool |
169 | default y | |
170 | ||
171 | config ARCH_MAY_HAVE_PC_FDC | |
172 | bool | |
bed59275 | 173 | default !PPC_PSERIES || PCI |
14cf11af | 174 | |
08264cbc KG |
175 | config PPC_OF |
176 | def_bool y | |
177 | ||
178 | config PPC_UDBG_16550 | |
179 | bool | |
180 | default n | |
181 | ||
08264cbc KG |
182 | config GENERIC_TBSYNC |
183 | bool | |
184 | default y if PPC32 && SMP | |
185 | default n | |
186 | ||
e65e1fc2 AV |
187 | config AUDIT_ARCH |
188 | bool | |
189 | default y | |
190 | ||
73c9ceab JF |
191 | config GENERIC_BUG |
192 | bool | |
193 | default y | |
194 | depends on BUG | |
195 | ||
b3028878 | 196 | config SYS_SUPPORTS_APM_EMULATION |
58da10bb | 197 | default y if PMAC_APM_EMU |
b3028878 JB |
198 | bool |
199 | ||
6c5b59b9 DG |
200 | config EPAPR_BOOT |
201 | bool | |
202 | help | |
203 | Used to allow a board to specify it wants an ePAPR compliant wrapper. | |
204 | default n | |
205 | ||
f4fc4a5b KG |
206 | config DEFAULT_UIMAGE |
207 | bool | |
208 | help | |
209 | Used to allow a board to specify it wants a uImage built by default | |
210 | default n | |
211 | ||
b09c1644 SW |
212 | config REDBOOT |
213 | bool | |
214 | ||
801e4062 JB |
215 | config ARCH_HIBERNATION_POSSIBLE |
216 | bool | |
543b9fd3 JB |
217 | default y |
218 | ||
f4cb5700 JB |
219 | config ARCH_SUSPEND_POSSIBLE |
220 | def_bool y | |
4ffd6952 | 221 | depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ |
d0832a75 ZC |
222 | (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \ |
223 | || 44x || 40x | |
f4cb5700 | 224 | |
4c75a6f4 BH |
225 | config PPC_DCR_NATIVE |
226 | bool | |
227 | default n | |
228 | ||
229 | config PPC_DCR_MMIO | |
230 | bool | |
231 | default n | |
232 | ||
233 | config PPC_DCR | |
234 | bool | |
235 | depends on PPC_DCR_NATIVE || PPC_DCR_MMIO | |
236 | default y | |
237 | ||
4c9d2800 BH |
238 | config PPC_OF_PLATFORM_PCI |
239 | bool | |
373a6da1 | 240 | depends on PCI |
4c9d2800 BH |
241 | depends on PPC64 # not supported on 32 bits yet |
242 | default n | |
243 | ||
6a11f75b AM |
244 | config ARCH_SUPPORTS_DEBUG_PAGEALLOC |
245 | def_bool y | |
246 | ||
8b7b80b9 AM |
247 | config ARCH_SUPPORTS_UPROBES |
248 | def_bool y | |
249 | ||
172ae2e7 DK |
250 | config PPC_ADV_DEBUG_REGS |
251 | bool | |
252 | depends on 40x || BOOKE | |
253 | default y | |
254 | ||
255 | config PPC_ADV_DEBUG_IACS | |
256 | int | |
257 | depends on PPC_ADV_DEBUG_REGS | |
258 | default 4 if 44x | |
259 | default 2 | |
260 | ||
261 | config PPC_ADV_DEBUG_DACS | |
262 | int | |
263 | depends on PPC_ADV_DEBUG_REGS | |
264 | default 2 | |
265 | ||
266 | config PPC_ADV_DEBUG_DVCS | |
267 | int | |
268 | depends on PPC_ADV_DEBUG_REGS | |
269 | default 2 if 44x | |
270 | default 0 | |
271 | ||
272 | config PPC_ADV_DEBUG_DAC_RANGE | |
273 | bool | |
274 | depends on PPC_ADV_DEBUG_REGS && 44x | |
275 | default y | |
276 | ||
5e249d45 SP |
277 | config PPC_EMULATE_SSTEP |
278 | bool | |
279 | default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT | |
280 | ||
14cf11af PM |
281 | source "init/Kconfig" |
282 | ||
dc52ddc0 MH |
283 | source "kernel/Kconfig.freezer" |
284 | ||
a2d2e1ec | 285 | source "arch/powerpc/sysdev/Kconfig" |
4330f5da | 286 | source "arch/powerpc/platforms/Kconfig" |
14cf11af | 287 | |
14cf11af PM |
288 | menu "Kernel options" |
289 | ||
290 | config HIGHMEM | |
291 | bool "High memory support" | |
292 | depends on PPC32 | |
293 | ||
294 | source kernel/Kconfig.hz | |
295 | source kernel/Kconfig.preempt | |
296 | source "fs/Kconfig.binfmt" | |
297 | ||
ba72cb8c MG |
298 | config HUGETLB_PAGE_SIZE_VARIABLE |
299 | bool | |
300 | depends on HUGETLB_PAGE | |
301 | default y | |
302 | ||
14cf11af PM |
303 | config MATH_EMULATION |
304 | bool "Math emulation" | |
4e63f8ed | 305 | depends on 4xx || 8xx || PPC_MPC832x || BOOKE |
14cf11af PM |
306 | ---help--- |
307 | Some PowerPC chips designed for embedded applications do not have | |
308 | a floating-point unit and therefore do not implement the | |
309 | floating-point instructions in the PowerPC instruction set. If you | |
310 | say Y here, the kernel will include code to emulate a floating-point | |
311 | unit, which will allow programs that use floating-point | |
312 | instructions to run. | |
313 | ||
4e63f8ed BH |
314 | This is also useful to emulate missing (optional) instructions |
315 | such as fsqrt on cores that do have an FPU but do not implement | |
316 | them (such as Freescale BookE). | |
317 | ||
e05c0e81 KH |
318 | choice |
319 | prompt "Math emulation options" | |
320 | default MATH_EMULATION_FULL | |
321 | depends on MATH_EMULATION | |
322 | ||
323 | config MATH_EMULATION_FULL | |
324 | bool "Emulate all the floating point instructions" | |
325 | ---help--- | |
326 | Select this option will enable the kernel to support to emulate | |
327 | all the floating point instructions. If your SoC doesn't have | |
328 | a FPU, you should select this. | |
329 | ||
330 | config MATH_EMULATION_HW_UNIMPLEMENTED | |
331 | bool "Just emulate the FPU unimplemented instructions" | |
332 | ---help--- | |
333 | Select this if you know there does have a hardware FPU on your | |
334 | SoC, but some floating point instructions are not implemented by that. | |
335 | ||
336 | endchoice | |
337 | ||
3d72bbc4 MN |
338 | config PPC_TRANSACTIONAL_MEM |
339 | bool "Transactional Memory support for POWERPC" | |
340 | depends on PPC_BOOK3S_64 | |
341 | depends on SMP | |
342 | default n | |
343 | ---help--- | |
344 | Support user-mode Transactional Memory on POWERPC. | |
345 | ||
fb3475e9 FT |
346 | config IOMMU_HELPER |
347 | def_bool PPC64 | |
348 | ||
ec3cf2ec BB |
349 | config SWIOTLB |
350 | bool "SWIOTLB support" | |
351 | default n | |
352 | select IOMMU_HELPER | |
353 | ---help--- | |
354 | Support for IO bounce buffering for systems without an IOMMU. | |
355 | This allows us to DMA to the full physical address space on | |
356 | platforms where the size of a physical address is larger | |
357 | than the bus address. Not all platforms support this. | |
358 | ||
14cf11af PM |
359 | config HOTPLUG_CPU |
360 | bool "Support for enabling/disabling CPUs" | |
40b31360 | 361 | depends on SMP && (PPC_PSERIES || \ |
d0832a75 | 362 | PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC)) |
14cf11af PM |
363 | ---help--- |
364 | Say Y here to be able to disable and re-enable individual | |
365 | CPUs at runtime on SMP machines. | |
366 | ||
367 | Say N if you are unsure. | |
368 | ||
12633e80 NF |
369 | config ARCH_CPU_PROBE_RELEASE |
370 | def_bool y | |
371 | depends on HOTPLUG_CPU | |
372 | ||
cc57637b YG |
373 | config ARCH_ENABLE_MEMORY_HOTPLUG |
374 | def_bool y | |
375 | ||
a99824f3 BP |
376 | config ARCH_HAS_WALK_MEMORY |
377 | def_bool y | |
378 | ||
1482471d BP |
379 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
380 | def_bool y | |
381 | ||
14cf11af | 382 | config KEXEC |
642e56ff KC |
383 | bool "kexec system call" |
384 | depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) | |
14cf11af PM |
385 | help |
386 | kexec is a system call that implements the ability to shutdown your | |
387 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 388 | but it is independent of the system firmware. And like a reboot |
14cf11af PM |
389 | you can start any kernel with it, not just Linux. |
390 | ||
1f1332f7 | 391 | The name comes from the similarity to the exec system call. |
14cf11af PM |
392 | |
393 | It is an ongoing process to be certain the hardware in a machine | |
394 | is properly shutdown, so do not be surprised if this code does not | |
bf220695 GU |
395 | initially work for you. As of this writing the exact hardware |
396 | interface is strongly in flux, so no good recommendation can be | |
397 | made. | |
14cf11af | 398 | |
e8625d46 | 399 | config CRASH_DUMP |
3420b5da | 400 | bool "Build a kdump crash kernel" |
47da4219 | 401 | depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) |
5b2e478d | 402 | select RELOCATABLE if PPC64 || 44x |
0f890c8d | 403 | select DYNAMIC_MEMSTART if FSL_BOOKE |
e8625d46 HM |
404 | help |
405 | Build a kernel suitable for use as a kdump capture kernel. | |
54622f10 MK |
406 | The same kernel binary can be used as production kernel and dump |
407 | capture kernel. | |
e8625d46 | 408 | |
eb39c880 MS |
409 | config FA_DUMP |
410 | bool "Firmware-assisted dump" | |
90890b1e | 411 | depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC |
242f271c | 412 | help |
eb39c880 MS |
413 | A robust mechanism to get reliable kernel crash dump with |
414 | assistance from firmware. This approach does not use kexec, | |
415 | instead firmware assists in booting the kdump kernel | |
416 | while preserving memory contents. Firmware-assisted dump | |
417 | is meant to be a kdump replacement offering robustness and | |
418 | speed not possible without system firmware assistance. | |
242f271c MA |
419 | |
420 | If unsure, say "N" | |
421 | ||
14cf11af PM |
422 | config IRQ_ALL_CPUS |
423 | bool "Distribute interrupts on all CPUs by default" | |
6cf09b9d | 424 | depends on SMP |
14cf11af PM |
425 | help |
426 | This option gives the kernel permission to distribute IRQs across | |
427 | multiple CPUs. Saying N here will route all IRQs to the first | |
428 | CPU. Generally saying Y is safe, although some problems have been | |
429 | reported with SMP Power Macintoshes with this option enabled. | |
430 | ||
ffa27b6b AW |
431 | config NUMA |
432 | bool "NUMA support" | |
433 | depends on PPC64 | |
434 | default y if SMP && PPC_PSERIES | |
435 | ||
c80d79d7 YG |
436 | config NODES_SHIFT |
437 | int | |
ea55bf29 | 438 | default "8" if PPC64 |
c80d79d7 YG |
439 | default "4" |
440 | depends on NEED_MULTIPLE_NODES | |
441 | ||
14cf11af PM |
442 | config ARCH_SELECT_MEMORY_MODEL |
443 | def_bool y | |
444 | depends on PPC64 | |
445 | ||
446 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
447 | def_bool y |
448 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 449 | |
45fb6cea | 450 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 451 | def_bool y |
9100b205 | 452 | depends on PPC64 |
d29eff7b | 453 | select SPARSEMEM_VMEMMAP_ENABLE |
14cf11af | 454 | |
45fb6cea | 455 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 456 | def_bool y |
78bde53e | 457 | depends on (SMP && PPC_PSERIES) || PPC_PS3 |
14cf11af | 458 | |
5a1eb5c4 | 459 | config SYS_SUPPORTS_HUGETLBFS |
41151e77 | 460 | bool |
5a1eb5c4 | 461 | |
c67c3cb4 | 462 | source "mm/Kconfig" |
14cf11af | 463 | |
7e9191da MK |
464 | config ARCH_MEMORY_PROBE |
465 | def_bool y | |
466 | depends on MEMORY_HOTPLUG | |
467 | ||
75167957 AW |
468 | # Some NUMA nodes have memory ranges that span |
469 | # other nodes. Even though a pfn is valid and | |
470 | # between a node's start and end pfns, it may not | |
471 | # reside on that node. See memmap_init_zone() | |
472 | # for details. | |
473 | config NODES_SPAN_OTHER_NODES | |
474 | def_bool y | |
475 | depends on NEED_MULTIPLE_NODES | |
476 | ||
16c2d476 BH |
477 | config PPC_HAS_HASH_64K |
478 | bool | |
479 | depends on PPC64 | |
480 | default n | |
481 | ||
e1240122 YT |
482 | config STDBINUTILS |
483 | bool "Using standard binutils settings" | |
484 | depends on 44x | |
485 | default y | |
486 | help | |
487 | Turning this option off allows you to select 256KB PAGE_SIZE on 44x. | |
488 | Note, that kernel will be able to run only those applications, | |
489 | which had been compiled using binutils later than 2.17.50.0.3 with | |
490 | '-zmax-page-size' set to 256K (the default is 64K). Or, if using | |
491 | the older binutils, you can patch them with a trivial patch, which | |
492 | changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. | |
493 | ||
ca9153a3 IY |
494 | choice |
495 | prompt "Page size" | |
496 | default PPC_4K_PAGES | |
3c726f8d | 497 | help |
ca9153a3 IY |
498 | Select the kernel logical page size. Increasing the page size |
499 | will reduce software overhead at each page boundary, allow | |
500 | hardware prefetch mechanisms to be more effective, and allow | |
501 | larger dma transfers increasing IO efficiency and reducing | |
502 | overhead. However the utilization of memory will increase. | |
503 | For example, each cached file will using a multiple of the | |
504 | page size to hold its contents and the difference between the | |
505 | end of file and the end of page is wasted. | |
506 | ||
507 | Some dedicated systems, such as software raid serving with | |
508 | accelerated calculations, have shown significant increases. | |
509 | ||
510 | If you configure a 64 bit kernel for 64k pages but the | |
511 | processor does not support them, then the kernel will simulate | |
512 | them with 4k pages, loading them on demand, but with the | |
513 | reduced software overhead and larger internal fragmentation. | |
514 | For the 32 bit kernel, a large page option will not be offered | |
515 | unless it is supported by the configured processor. | |
516 | ||
517 | If unsure, choose 4K_PAGES. | |
518 | ||
519 | config PPC_4K_PAGES | |
520 | bool "4k page size" | |
521 | ||
522 | config PPC_16K_PAGES | |
523 | bool "16k page size" if 44x | |
524 | ||
525 | config PPC_64K_PAGES | |
2d27cfd3 | 526 | bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 |
ca9153a3 IY |
527 | select PPC_HAS_HASH_64K if PPC_STD_MMU_64 |
528 | ||
e1240122 YT |
529 | config PPC_256K_PAGES |
530 | bool "256k page size" if 44x | |
adf213c4 | 531 | depends on !STDBINUTILS |
e1240122 YT |
532 | help |
533 | Make the page size 256k. | |
534 | ||
535 | As the ELF standard only requires alignment to support page | |
536 | sizes up to 64k, you will need to compile all of your user | |
537 | space applications with a non-standard binutils settings | |
538 | (see the STDBINUTILS description for details). | |
539 | ||
540 | Say N unless you know what you are doing. | |
541 | ||
ca9153a3 | 542 | endchoice |
3c726f8d | 543 | |
53bcddb9 SR |
544 | config FORCE_MAX_ZONEORDER |
545 | int "Maximum zone order" | |
066c4b87 BH |
546 | range 9 64 if PPC64 && PPC_64K_PAGES |
547 | default "9" if PPC64 && PPC_64K_PAGES | |
548 | range 13 64 if PPC64 && !PPC_64K_PAGES | |
549 | default "13" if PPC64 && !PPC_64K_PAGES | |
550 | range 9 64 if PPC32 && PPC_16K_PAGES | |
551 | default "9" if PPC32 && PPC_16K_PAGES | |
552 | range 7 64 if PPC32 && PPC_64K_PAGES | |
553 | default "7" if PPC32 && PPC_64K_PAGES | |
554 | range 5 64 if PPC32 && PPC_256K_PAGES | |
555 | default "5" if PPC32 && PPC_256K_PAGES | |
ebe40c5c | 556 | range 11 64 |
53bcddb9 SR |
557 | default "11" |
558 | help | |
559 | The kernel memory allocator divides physically contiguous memory | |
560 | blocks into "zones", where each zone is a power of two number of | |
561 | pages. This option selects the largest power of two that the kernel | |
562 | keeps in the memory allocator. If you need to allocate very large | |
563 | blocks of physically contiguous memory, then you may need to | |
564 | increase this value. | |
565 | ||
566 | This config option is actually maximum order plus one. For example, | |
567 | a value of 11 means that the largest free memory block is 2^10 pages. | |
568 | ||
569 | The page size is not necessarily 4KB. For example, on 64-bit | |
570 | systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep | |
571 | this in mind when choosing a value for this option. | |
572 | ||
fa28237c PM |
573 | config PPC_SUBPAGE_PROT |
574 | bool "Support setting protections for 4k subpages" | |
ca9153a3 | 575 | depends on PPC_STD_MMU_64 && PPC_64K_PAGES |
fa28237c PM |
576 | help |
577 | This option adds support for a system call to allow user programs | |
578 | to set access permissions (read/write, readonly, or no access) | |
579 | on the 4k subpages of each 64k page. | |
580 | ||
14cf11af PM |
581 | config SCHED_SMT |
582 | bool "SMT (Hyperthreading) scheduler support" | |
583 | depends on PPC64 && SMP | |
14cf11af PM |
584 | help |
585 | SMT scheduler support improves the CPU scheduler's decision making | |
586 | when dealing with POWER5 cpus at a cost of slightly increased | |
587 | overhead in some places. If unsure say N here. | |
588 | ||
b92a66a6 MN |
589 | config PPC_DENORMALISATION |
590 | bool "PowerPC denormalisation exception handling" | |
591 | depends on PPC_BOOK3S_64 | |
4e90a2a7 | 592 | default "y" if PPC_POWERNV |
b92a66a6 MN |
593 | ---help--- |
594 | Add support for handling denormalisation of single precision | |
595 | values. Useful for bare metal only. If unsure say Y here. | |
596 | ||
14cf11af PM |
597 | config CMDLINE_BOOL |
598 | bool "Default bootloader kernel arguments" | |
14cf11af PM |
599 | |
600 | config CMDLINE | |
601 | string "Initial kernel command string" | |
602 | depends on CMDLINE_BOOL | |
603 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
604 | help | |
605 | On some platforms, there is currently no way for the boot loader to | |
606 | pass arguments to the kernel. For these platforms, you can supply | |
607 | some command-line options at build time by entering them here. In | |
608 | most cases you will need to specify the root device here. | |
609 | ||
c356aa45 GL |
610 | config EXTRA_TARGETS |
611 | string "Additional default image types" | |
612 | help | |
613 | List additional targets to be built by the bootwrapper here (separated | |
614 | by spaces). This is useful for targets that depend of device tree | |
615 | files in the .dts directory. | |
616 | ||
617 | Targets in this list will be build as part of the default build | |
618 | target, or when the user does a 'make zImage' or a | |
619 | 'make zImage.initrd'. | |
620 | ||
621 | If unsure, leave blank | |
622 | ||
b28f5081 JB |
623 | config ARCH_WANTS_FREEZER_CONTROL |
624 | def_bool y | |
625 | depends on ADB_PMU | |
626 | ||
14cf11af | 627 | source kernel/power/Kconfig |
14cf11af PM |
628 | |
629 | config SECCOMP | |
630 | bool "Enable seccomp to safely compute untrusted bytecode" | |
631 | depends on PROC_FS | |
632 | default y | |
633 | help | |
634 | This kernel feature is useful for number crunching applications | |
635 | that may need to compute untrusted bytecode during their | |
636 | execution. By using pipes or other transports made available to | |
637 | the process as file descriptors supporting the read/write | |
638 | syscalls, it's possible to isolate those applications in | |
639 | their own address space using seccomp. Once seccomp is | |
640 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
641 | and the task is only allowed to execute a few safe syscalls | |
642 | defined by each seccomp mode. | |
643 | ||
644 | If unsure, say Y. Only embedded should say N here. | |
645 | ||
646 | endmenu | |
647 | ||
648 | config ISA_DMA_API | |
649 | bool | |
3d066d77 | 650 | default PCI |
14cf11af PM |
651 | |
652 | menu "Bus options" | |
653 | ||
654 | config ISA | |
655 | bool "Support for ISA-bus hardware" | |
933ee711 | 656 | depends on PPC_CHRP |
f9bd170a | 657 | select PPC_I8259 |
14cf11af PM |
658 | help |
659 | Find out whether you have ISA slots on your motherboard. ISA is the | |
660 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
661 | inside your box. If you have an Apple machine, say N here; if you | |
933ee711 PB |
662 | have an IBM RS/6000 or pSeries machine, say Y. If you have an |
663 | embedded board, consult your board documentation. | |
14cf11af | 664 | |
5ac6da66 CL |
665 | config ZONE_DMA |
666 | bool | |
667 | default y | |
668 | ||
af407c6d FT |
669 | config NEED_DMA_MAP_STATE |
670 | def_bool (PPC64 || NOT_COHERENT_CACHE) | |
671 | ||
e32205eb FT |
672 | config NEED_SG_DMA_LENGTH |
673 | def_bool y | |
674 | ||
14cf11af PM |
675 | config GENERIC_ISA_DMA |
676 | bool | |
1927445a | 677 | depends on ISA_DMA_API |
14cf11af PM |
678 | default y |
679 | ||
25635c71 PM |
680 | config PPC_INDIRECT_PCI |
681 | bool | |
682 | depends on PCI | |
63dafe57 | 683 | default y if 40x || 44x |
25635c71 PM |
684 | default n |
685 | ||
14cf11af PM |
686 | config EISA |
687 | bool | |
688 | ||
689 | config SBUS | |
690 | bool | |
691 | ||
08264cbc KG |
692 | config FSL_SOC |
693 | bool | |
694 | ||
55c44991 RZ |
695 | config FSL_PCI |
696 | bool | |
697 | select PPC_INDIRECT_PCI | |
d0839118 | 698 | select PCI_QUIRKS |
55c44991 | 699 | |
4ffd6952 AV |
700 | config FSL_PMC |
701 | bool | |
702 | default y | |
703 | depends on SUSPEND && (PPC_85xx || PPC_86xx) | |
704 | help | |
705 | Freescale MPC85xx/MPC86xx power management controller support | |
706 | (suspend/resume). For MPC83xx see platforms/83xx/suspend.c | |
707 | ||
d164f6d4 VG |
708 | config PPC4xx_CPM |
709 | bool | |
710 | default y | |
711 | depends on SUSPEND && (44x || 40x) | |
712 | help | |
713 | PPC4xx Clock Power Management (CPM) support (suspend/resume). | |
714 | It also enables support for two different idle states (idle-wait | |
715 | and idle-doze). | |
716 | ||
2a706919 SR |
717 | config 4xx_SOC |
718 | bool | |
719 | ||
acaa7aa3 | 720 | config FSL_LBC |
3ab8f2a2 RZ |
721 | bool "Freescale Local Bus support" |
722 | depends on FSL_SOC | |
acaa7aa3 | 723 | help |
3ab8f2a2 RZ |
724 | Enables reporting of errors from the Freescale local bus |
725 | controller. Also contains some common code used by | |
726 | drivers for specific local bus peripherals. | |
acaa7aa3 | 727 | |
a20cbdef PK |
728 | config FSL_IFC |
729 | bool | |
730 | depends on FSL_SOC | |
731 | ||
83ff9dcf AV |
732 | config FSL_GTM |
733 | bool | |
734 | depends on PPC_83xx || QUICC_ENGINE || CPM2 | |
735 | help | |
736 | Freescale General-purpose Timers support | |
737 | ||
14cf11af PM |
738 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
739 | config MCA | |
740 | bool | |
741 | ||
b500563b JR |
742 | # Platforms that what PCI turned unconditionally just do select PCI |
743 | # in their config node. Platforms that want to choose at config | |
744 | # time should select PPC_PCI_CHOICE | |
745 | config PPC_PCI_CHOICE | |
746 | bool | |
747 | ||
14cf11af | 748 | config PCI |
b500563b JR |
749 | bool "PCI support" if PPC_PCI_CHOICE |
750 | default y if !40x && !CPM2 && !8xx && !PPC_83xx \ | |
bcc48591 | 751 | && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON |
14cf11af | 752 | default PCI_QSPAN if !4xx && !CPM2 && 8xx |
335b8cf7 | 753 | select GENERIC_PCI_IOMAP |
14cf11af PM |
754 | help |
755 | Find out whether your system includes a PCI bus. PCI is the name of | |
756 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
757 | your box. If you say Y here, the kernel will include drivers and | |
758 | infrastructure code to support PCI bus devices. | |
759 | ||
760 | config PCI_DOMAINS | |
36e23590 MW |
761 | def_bool PCI |
762 | ||
763 | config PCI_SYSCALL | |
764 | def_bool PCI | |
14cf11af | 765 | |
14cf11af PM |
766 | config PCI_QSPAN |
767 | bool "QSpan PCI" | |
768 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 769 | select PPC_I8259 |
14cf11af PM |
770 | help |
771 | Say Y here if you have a system based on a Motorola 8xx-series | |
772 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
773 | ||
774 | config PCI_8260 | |
775 | bool | |
776 | depends on PCI && 8260 | |
25635c71 | 777 | select PPC_INDIRECT_PCI |
14cf11af PM |
778 | default y |
779 | ||
bb53bb3d JM |
780 | source "drivers/pci/pcie/Kconfig" |
781 | ||
14cf11af PM |
782 | source "drivers/pci/Kconfig" |
783 | ||
784 | source "drivers/pcmcia/Kconfig" | |
785 | ||
786 | source "drivers/pci/hotplug/Kconfig" | |
787 | ||
f1f389d5 ZW |
788 | config HAS_RAPIDIO |
789 | bool | |
790 | default n | |
791 | ||
792 | config RAPIDIO | |
793 | bool "RapidIO support" | |
388b78ad | 794 | depends on HAS_RAPIDIO || PCI |
f1f389d5 ZW |
795 | help |
796 | If you say Y here, the kernel will include drivers and | |
797 | infrastructure code to support RapidIO interconnect devices. | |
798 | ||
388b78ad AB |
799 | config FSL_RIO |
800 | bool "Freescale Embedded SRIO Controller support" | |
801 | depends on RAPIDIO && HAS_RAPIDIO | |
802 | default "n" | |
803 | ---help--- | |
804 | Include support for RapidIO controller on Freescale embedded | |
805 | processors (MPC8548, MPC8641, etc). | |
806 | ||
f1f389d5 ZW |
807 | source "drivers/rapidio/Kconfig" |
808 | ||
14cf11af PM |
809 | endmenu |
810 | ||
0f890c8d SP |
811 | config NONSTATIC_KERNEL |
812 | bool | |
813 | default n | |
814 | ||
14cf11af PM |
815 | menu "Advanced setup" |
816 | depends on PPC32 | |
817 | ||
818 | config ADVANCED_OPTIONS | |
819 | bool "Prompt for advanced kernel configuration options" | |
820 | help | |
821 | This option will enable prompting for a variety of advanced kernel | |
822 | configuration options. These options can cause the kernel to not | |
823 | work if they are set incorrectly, but can be used to optimize certain | |
824 | aspects of kernel memory management. | |
825 | ||
826 | Unless you know what you are doing, say N here. | |
827 | ||
828 | comment "Default settings for advanced configuration options are used" | |
829 | depends on !ADVANCED_OPTIONS | |
830 | ||
14cf11af PM |
831 | config LOWMEM_SIZE_BOOL |
832 | bool "Set maximum low memory" | |
833 | depends on ADVANCED_OPTIONS | |
834 | help | |
835 | This option allows you to set the maximum amount of memory which | |
836 | will be used as "low memory", that is, memory which the kernel can | |
837 | access directly, without having to set up a kernel virtual mapping. | |
838 | This can be useful in optimizing the layout of kernel virtual | |
839 | memory. | |
840 | ||
841 | Say N here unless you know what you are doing. | |
842 | ||
843 | config LOWMEM_SIZE | |
844 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
845 | default "0x30000000" | |
846 | ||
96051465 TP |
847 | config LOWMEM_CAM_NUM_BOOL |
848 | bool "Set number of CAMs to use to map low memory" | |
849 | depends on ADVANCED_OPTIONS && FSL_BOOKE | |
850 | help | |
851 | This option allows you to set the maximum number of CAM slots that | |
852 | will be used to map low memory. There are a limited number of slots | |
853 | available and even more limited number that will fit in the L1 MMU. | |
854 | However, using more entries will allow mapping more low memory. This | |
855 | can be useful in optimizing the layout of kernel virtual memory. | |
856 | ||
857 | Say N here unless you know what you are doing. | |
858 | ||
859 | config LOWMEM_CAM_NUM | |
9b71dbd3 | 860 | depends on FSL_BOOKE |
96051465 TP |
861 | int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL |
862 | default 3 | |
863 | ||
0f890c8d | 864 | config DYNAMIC_MEMSTART |
642e56ff KC |
865 | bool "Enable page aligned dynamic load address for kernel" |
866 | depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) | |
0f890c8d SP |
867 | select NONSTATIC_KERNEL |
868 | help | |
869 | This option enables the kernel to be loaded at any page aligned | |
870 | physical address. The kernel creates a mapping from KERNELBASE to | |
871 | the address where the kernel is loaded. The page size here implies | |
872 | the TLB page size of the mapping for kernel on the particular platform. | |
873 | Please refer to the init code for finding the TLB page size. | |
874 | ||
875 | DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE | |
876 | kernel image, where the only restriction is the page aligned kernel | |
877 | load address. When this option is enabled, the compile time physical | |
878 | address CONFIG_PHYSICAL_START is ignored. | |
879 | ||
9c5f7d39 SP |
880 | This option is overridden by CONFIG_RELOCATABLE |
881 | ||
37dd2bad | 882 | config RELOCATABLE |
642e56ff KC |
883 | bool "Build a relocatable kernel" |
884 | depends on ADVANCED_OPTIONS && FLATMEM && 44x | |
9c5f7d39 | 885 | select NONSTATIC_KERNEL |
37dd2bad KG |
886 | help |
887 | This builds a kernel image that is capable of running at the | |
9c5f7d39 SP |
888 | location the kernel is loaded at, without any alignment restrictions. |
889 | This feature is a superset of DYNAMIC_MEMSTART and hence overrides it. | |
37dd2bad KG |
890 | |
891 | One use is for the kexec on panic case where the recovery kernel | |
892 | must live at a different physical address than the primary | |
893 | kernel. | |
894 | ||
895 | Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address | |
896 | it has been loaded at and the compile time physical addresses | |
897 | CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START | |
898 | setting can still be useful to bootwrappers that need to know the | |
9c5f7d39 SP |
899 | load address of the kernel (eg. u-boot/mkimage). |
900 | ||
901 | config RELOCATABLE_PPC32 | |
902 | def_bool y | |
903 | depends on PPC32 && RELOCATABLE | |
37dd2bad KG |
904 | |
905 | config PAGE_OFFSET_BOOL | |
906 | bool "Set custom page offset address" | |
907 | depends on ADVANCED_OPTIONS | |
908 | help | |
909 | This option allows you to set the kernel virtual address at which | |
910 | the kernel will map low memory. This can be useful in optimizing | |
911 | the virtual memory layout of the system. | |
912 | ||
913 | Say N here unless you know what you are doing. | |
914 | ||
915 | config PAGE_OFFSET | |
916 | hex "Virtual address of memory base" if PAGE_OFFSET_BOOL | |
917 | default "0xc0000000" | |
918 | ||
14cf11af PM |
919 | config KERNEL_START_BOOL |
920 | bool "Set custom kernel base address" | |
921 | depends on ADVANCED_OPTIONS | |
922 | help | |
923 | This option allows you to set the kernel virtual address at which | |
37dd2bad KG |
924 | the kernel will be loaded. Normally this should match PAGE_OFFSET |
925 | however there are times (like kdump) that one might not want them | |
926 | to be the same. | |
14cf11af PM |
927 | |
928 | Say N here unless you know what you are doing. | |
929 | ||
930 | config KERNEL_START | |
931 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
37dd2bad | 932 | default PAGE_OFFSET if PAGE_OFFSET_BOOL |
0f890c8d | 933 | default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL |
14cf11af PM |
934 | default "0xc0000000" |
935 | ||
37dd2bad KG |
936 | config PHYSICAL_START_BOOL |
937 | bool "Set physical address where the kernel is loaded" | |
938 | depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
939 | help | |
940 | This gives the physical address where the kernel is loaded. | |
941 | ||
942 | Say N here unless you know what you are doing. | |
943 | ||
944 | config PHYSICAL_START | |
945 | hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL | |
0f890c8d | 946 | default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL |
37dd2bad KG |
947 | default "0x00000000" |
948 | ||
949 | config PHYSICAL_ALIGN | |
950 | hex | |
c8f3570b | 951 | default "0x04000000" if FSL_BOOKE |
37dd2bad KG |
952 | help |
953 | This value puts the alignment restrictions on physical address | |
954 | where kernel is loaded and run from. Kernel is compiled for an | |
955 | address which meets above alignment restriction. | |
956 | ||
14cf11af PM |
957 | config TASK_SIZE_BOOL |
958 | bool "Set custom user task size" | |
959 | depends on ADVANCED_OPTIONS | |
960 | help | |
961 | This option allows you to set the amount of virtual address space | |
962 | allocated to user tasks. This can be useful in optimizing the | |
963 | virtual memory layout of the system. | |
964 | ||
965 | Say N here unless you know what you are doing. | |
966 | ||
967 | config TASK_SIZE | |
968 | hex "Size of user task space" if TASK_SIZE_BOOL | |
933ee711 | 969 | default "0x80000000" if PPC_8xx |
4d9e5510 | 970 | default "0xc0000000" |
14cf11af | 971 | |
84532a0f BH |
972 | config CONSISTENT_SIZE_BOOL |
973 | bool "Set custom consistent memory pool size" | |
974 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
975 | help | |
976 | This option allows you to set the size of the | |
977 | consistent memory pool. This pool of virtual memory | |
978 | is used to make consistent memory allocations. | |
979 | ||
980 | config CONSISTENT_SIZE | |
981 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
982 | default "0x00200000" if NOT_COHERENT_CACHE | |
983 | ||
14cf11af PM |
984 | config PIN_TLB |
985 | bool "Pinned Kernel TLBs (860 ONLY)" | |
986 | depends on ADVANCED_OPTIONS && 8xx | |
987 | endmenu | |
988 | ||
cabb5587 | 989 | if PPC64 |
549e8152 PM |
990 | config RELOCATABLE |
991 | bool "Build a relocatable kernel" | |
0f890c8d | 992 | select NONSTATIC_KERNEL |
549e8152 PM |
993 | help |
994 | This builds a kernel image that is capable of running anywhere | |
995 | in the RMA (real memory area) at any 16k-aligned base address. | |
996 | The kernel is linked as a position-independent executable (PIE) | |
997 | and contains dynamic relocations which are processed early | |
998 | in the bootup process. | |
999 | ||
1000 | One use is for the kexec on panic case where the recovery kernel | |
1001 | must live at a different physical address than the primary | |
1002 | kernel. | |
1003 | ||
bdbc29c1 | 1004 | # This value must have zeroes in the bottom 60 bits otherwise lots will break |
37dd2bad KG |
1005 | config PAGE_OFFSET |
1006 | hex | |
1007 | default "0xc000000000000000" | |
cabb5587 SR |
1008 | config KERNEL_START |
1009 | hex | |
eeb2d218 | 1010 | default "0xc000000000000000" |
37dd2bad KG |
1011 | config PHYSICAL_START |
1012 | hex | |
37dd2bad | 1013 | default "0x00000000" |
cabb5587 SR |
1014 | endif |
1015 | ||
a4da0d50 ME |
1016 | config ARCH_RANDOM |
1017 | def_bool n | |
1018 | ||
14cf11af PM |
1019 | source "net/Kconfig" |
1020 | ||
1021 | source "drivers/Kconfig" | |
1022 | ||
1023 | source "fs/Kconfig" | |
1024 | ||
98658538 LY |
1025 | source "arch/powerpc/sysdev/qe_lib/Kconfig" |
1026 | ||
14cf11af PM |
1027 | source "lib/Kconfig" |
1028 | ||
14cf11af PM |
1029 | source "arch/powerpc/Kconfig.debug" |
1030 | ||
1031 | source "security/Kconfig" | |
1032 | ||
1033 | config KEYS_COMPAT | |
1034 | bool | |
1035 | depends on COMPAT && KEYS | |
1036 | default y | |
1037 | ||
1038 | source "crypto/Kconfig" | |
6f668280 DP |
1039 | |
1040 | config PPC_CLOCK | |
1041 | bool | |
1042 | default n | |
9483a578 | 1043 | select HAVE_CLK |
1088a209 SM |
1044 | |
1045 | config PPC_LIB_RHEAP | |
1046 | bool | |
1047 | ||
bbf45ba5 | 1048 | source "arch/powerpc/kvm/Kconfig" |