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Commit | Line | Data |
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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 | 149 | |
b71d47c1 JB |
150 | config PANIC_TIMEOUT |
151 | int | |
152 | default 180 | |
153 | ||
14cf11af PM |
154 | config COMPAT |
155 | bool | |
156 | default y if PPC64 | |
01e31dba | 157 | select COMPAT_BINFMT_ELF |
48b25c43 | 158 | select ARCH_WANT_OLD_COMPAT_IPC |
09a4d5d0 | 159 | select COMPAT_OLD_SIGACTION |
14cf11af PM |
160 | |
161 | config SYSVIPC_COMPAT | |
162 | bool | |
163 | depends on COMPAT && SYSVIPC | |
164 | default y | |
165 | ||
166 | # All PPC32s use generic nvram driver through ppc_md | |
167 | config GENERIC_NVRAM | |
168 | bool | |
169 | default y if PPC32 | |
170 | ||
ae1e9130 | 171 | config SCHED_OMIT_FRAME_POINTER |
14cf11af PM |
172 | bool |
173 | default y | |
174 | ||
175 | config ARCH_MAY_HAVE_PC_FDC | |
176 | bool | |
bed59275 | 177 | default !PPC_PSERIES || PCI |
14cf11af | 178 | |
08264cbc KG |
179 | config PPC_OF |
180 | def_bool y | |
181 | ||
182 | config PPC_UDBG_16550 | |
183 | bool | |
184 | default n | |
185 | ||
08264cbc KG |
186 | config GENERIC_TBSYNC |
187 | bool | |
188 | default y if PPC32 && SMP | |
189 | default n | |
190 | ||
e65e1fc2 AV |
191 | config AUDIT_ARCH |
192 | bool | |
193 | default y | |
194 | ||
73c9ceab JF |
195 | config GENERIC_BUG |
196 | bool | |
197 | default y | |
198 | depends on BUG | |
199 | ||
b3028878 | 200 | config SYS_SUPPORTS_APM_EMULATION |
58da10bb | 201 | default y if PMAC_APM_EMU |
b3028878 JB |
202 | bool |
203 | ||
6c5b59b9 DG |
204 | config EPAPR_BOOT |
205 | bool | |
206 | help | |
207 | Used to allow a board to specify it wants an ePAPR compliant wrapper. | |
208 | default n | |
209 | ||
f4fc4a5b KG |
210 | config DEFAULT_UIMAGE |
211 | bool | |
212 | help | |
213 | Used to allow a board to specify it wants a uImage built by default | |
214 | default n | |
215 | ||
b09c1644 SW |
216 | config REDBOOT |
217 | bool | |
218 | ||
801e4062 JB |
219 | config ARCH_HIBERNATION_POSSIBLE |
220 | bool | |
543b9fd3 JB |
221 | default y |
222 | ||
f4cb5700 JB |
223 | config ARCH_SUSPEND_POSSIBLE |
224 | def_bool y | |
4ffd6952 | 225 | depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ |
d0832a75 ZC |
226 | (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \ |
227 | || 44x || 40x | |
f4cb5700 | 228 | |
4c75a6f4 BH |
229 | config PPC_DCR_NATIVE |
230 | bool | |
231 | default n | |
232 | ||
233 | config PPC_DCR_MMIO | |
234 | bool | |
235 | default n | |
236 | ||
237 | config PPC_DCR | |
238 | bool | |
239 | depends on PPC_DCR_NATIVE || PPC_DCR_MMIO | |
240 | default y | |
241 | ||
4c9d2800 BH |
242 | config PPC_OF_PLATFORM_PCI |
243 | bool | |
373a6da1 | 244 | depends on PCI |
4c9d2800 BH |
245 | depends on PPC64 # not supported on 32 bits yet |
246 | default n | |
247 | ||
6a11f75b AM |
248 | config ARCH_SUPPORTS_DEBUG_PAGEALLOC |
249 | def_bool y | |
250 | ||
8b7b80b9 AM |
251 | config ARCH_SUPPORTS_UPROBES |
252 | def_bool y | |
253 | ||
172ae2e7 DK |
254 | config PPC_ADV_DEBUG_REGS |
255 | bool | |
256 | depends on 40x || BOOKE | |
257 | default y | |
258 | ||
259 | config PPC_ADV_DEBUG_IACS | |
260 | int | |
261 | depends on PPC_ADV_DEBUG_REGS | |
262 | default 4 if 44x | |
263 | default 2 | |
264 | ||
265 | config PPC_ADV_DEBUG_DACS | |
266 | int | |
267 | depends on PPC_ADV_DEBUG_REGS | |
268 | default 2 | |
269 | ||
270 | config PPC_ADV_DEBUG_DVCS | |
271 | int | |
272 | depends on PPC_ADV_DEBUG_REGS | |
273 | default 2 if 44x | |
274 | default 0 | |
275 | ||
276 | config PPC_ADV_DEBUG_DAC_RANGE | |
277 | bool | |
278 | depends on PPC_ADV_DEBUG_REGS && 44x | |
279 | default y | |
280 | ||
5e249d45 SP |
281 | config PPC_EMULATE_SSTEP |
282 | bool | |
283 | default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT | |
284 | ||
14cf11af PM |
285 | source "init/Kconfig" |
286 | ||
dc52ddc0 MH |
287 | source "kernel/Kconfig.freezer" |
288 | ||
a2d2e1ec | 289 | source "arch/powerpc/sysdev/Kconfig" |
4330f5da | 290 | source "arch/powerpc/platforms/Kconfig" |
14cf11af | 291 | |
14cf11af PM |
292 | menu "Kernel options" |
293 | ||
294 | config HIGHMEM | |
295 | bool "High memory support" | |
296 | depends on PPC32 | |
297 | ||
298 | source kernel/Kconfig.hz | |
299 | source kernel/Kconfig.preempt | |
300 | source "fs/Kconfig.binfmt" | |
301 | ||
ba72cb8c MG |
302 | config HUGETLB_PAGE_SIZE_VARIABLE |
303 | bool | |
304 | depends on HUGETLB_PAGE | |
305 | default y | |
306 | ||
14cf11af PM |
307 | config MATH_EMULATION |
308 | bool "Math emulation" | |
4e63f8ed | 309 | depends on 4xx || 8xx || PPC_MPC832x || BOOKE |
14cf11af PM |
310 | ---help--- |
311 | Some PowerPC chips designed for embedded applications do not have | |
312 | a floating-point unit and therefore do not implement the | |
313 | floating-point instructions in the PowerPC instruction set. If you | |
314 | say Y here, the kernel will include code to emulate a floating-point | |
315 | unit, which will allow programs that use floating-point | |
316 | instructions to run. | |
317 | ||
4e63f8ed BH |
318 | This is also useful to emulate missing (optional) instructions |
319 | such as fsqrt on cores that do have an FPU but do not implement | |
320 | them (such as Freescale BookE). | |
321 | ||
e05c0e81 KH |
322 | choice |
323 | prompt "Math emulation options" | |
324 | default MATH_EMULATION_FULL | |
325 | depends on MATH_EMULATION | |
326 | ||
327 | config MATH_EMULATION_FULL | |
328 | bool "Emulate all the floating point instructions" | |
329 | ---help--- | |
330 | Select this option will enable the kernel to support to emulate | |
331 | all the floating point instructions. If your SoC doesn't have | |
332 | a FPU, you should select this. | |
333 | ||
334 | config MATH_EMULATION_HW_UNIMPLEMENTED | |
335 | bool "Just emulate the FPU unimplemented instructions" | |
336 | ---help--- | |
337 | Select this if you know there does have a hardware FPU on your | |
338 | SoC, but some floating point instructions are not implemented by that. | |
339 | ||
340 | endchoice | |
341 | ||
3d72bbc4 MN |
342 | config PPC_TRANSACTIONAL_MEM |
343 | bool "Transactional Memory support for POWERPC" | |
344 | depends on PPC_BOOK3S_64 | |
345 | depends on SMP | |
346 | default n | |
347 | ---help--- | |
348 | Support user-mode Transactional Memory on POWERPC. | |
349 | ||
fb3475e9 FT |
350 | config IOMMU_HELPER |
351 | def_bool PPC64 | |
352 | ||
ec3cf2ec BB |
353 | config SWIOTLB |
354 | bool "SWIOTLB support" | |
355 | default n | |
356 | select IOMMU_HELPER | |
357 | ---help--- | |
358 | Support for IO bounce buffering for systems without an IOMMU. | |
359 | This allows us to DMA to the full physical address space on | |
360 | platforms where the size of a physical address is larger | |
361 | than the bus address. Not all platforms support this. | |
362 | ||
14cf11af PM |
363 | config HOTPLUG_CPU |
364 | bool "Support for enabling/disabling CPUs" | |
40b31360 | 365 | depends on SMP && (PPC_PSERIES || \ |
d0832a75 | 366 | PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC)) |
14cf11af PM |
367 | ---help--- |
368 | Say Y here to be able to disable and re-enable individual | |
369 | CPUs at runtime on SMP machines. | |
370 | ||
371 | Say N if you are unsure. | |
372 | ||
12633e80 NF |
373 | config ARCH_CPU_PROBE_RELEASE |
374 | def_bool y | |
375 | depends on HOTPLUG_CPU | |
376 | ||
cc57637b YG |
377 | config ARCH_ENABLE_MEMORY_HOTPLUG |
378 | def_bool y | |
379 | ||
a99824f3 BP |
380 | config ARCH_HAS_WALK_MEMORY |
381 | def_bool y | |
382 | ||
1482471d BP |
383 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
384 | def_bool y | |
385 | ||
14cf11af | 386 | config KEXEC |
642e56ff KC |
387 | bool "kexec system call" |
388 | depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) | |
14cf11af PM |
389 | help |
390 | kexec is a system call that implements the ability to shutdown your | |
391 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 392 | but it is independent of the system firmware. And like a reboot |
14cf11af PM |
393 | you can start any kernel with it, not just Linux. |
394 | ||
1f1332f7 | 395 | The name comes from the similarity to the exec system call. |
14cf11af PM |
396 | |
397 | It is an ongoing process to be certain the hardware in a machine | |
398 | is properly shutdown, so do not be surprised if this code does not | |
bf220695 GU |
399 | initially work for you. As of this writing the exact hardware |
400 | interface is strongly in flux, so no good recommendation can be | |
401 | made. | |
14cf11af | 402 | |
e8625d46 | 403 | config CRASH_DUMP |
3420b5da | 404 | bool "Build a kdump crash kernel" |
47da4219 | 405 | depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) |
5b2e478d | 406 | select RELOCATABLE if PPC64 || 44x |
0f890c8d | 407 | select DYNAMIC_MEMSTART if FSL_BOOKE |
e8625d46 HM |
408 | help |
409 | Build a kernel suitable for use as a kdump capture kernel. | |
54622f10 MK |
410 | The same kernel binary can be used as production kernel and dump |
411 | capture kernel. | |
e8625d46 | 412 | |
eb39c880 MS |
413 | config FA_DUMP |
414 | bool "Firmware-assisted dump" | |
90890b1e | 415 | depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC |
242f271c | 416 | help |
eb39c880 MS |
417 | A robust mechanism to get reliable kernel crash dump with |
418 | assistance from firmware. This approach does not use kexec, | |
419 | instead firmware assists in booting the kdump kernel | |
420 | while preserving memory contents. Firmware-assisted dump | |
421 | is meant to be a kdump replacement offering robustness and | |
422 | speed not possible without system firmware assistance. | |
242f271c MA |
423 | |
424 | If unsure, say "N" | |
425 | ||
14cf11af PM |
426 | config IRQ_ALL_CPUS |
427 | bool "Distribute interrupts on all CPUs by default" | |
6cf09b9d | 428 | depends on SMP |
14cf11af PM |
429 | help |
430 | This option gives the kernel permission to distribute IRQs across | |
431 | multiple CPUs. Saying N here will route all IRQs to the first | |
432 | CPU. Generally saying Y is safe, although some problems have been | |
433 | reported with SMP Power Macintoshes with this option enabled. | |
434 | ||
ffa27b6b AW |
435 | config NUMA |
436 | bool "NUMA support" | |
437 | depends on PPC64 | |
438 | default y if SMP && PPC_PSERIES | |
439 | ||
c80d79d7 YG |
440 | config NODES_SHIFT |
441 | int | |
ea55bf29 | 442 | default "8" if PPC64 |
c80d79d7 YG |
443 | default "4" |
444 | depends on NEED_MULTIPLE_NODES | |
445 | ||
14cf11af PM |
446 | config ARCH_SELECT_MEMORY_MODEL |
447 | def_bool y | |
448 | depends on PPC64 | |
449 | ||
450 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
451 | def_bool y |
452 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 453 | |
45fb6cea | 454 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 455 | def_bool y |
9100b205 | 456 | depends on PPC64 |
d29eff7b | 457 | select SPARSEMEM_VMEMMAP_ENABLE |
14cf11af | 458 | |
45fb6cea | 459 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 460 | def_bool y |
78bde53e | 461 | depends on (SMP && PPC_PSERIES) || PPC_PS3 |
14cf11af | 462 | |
5a1eb5c4 | 463 | config SYS_SUPPORTS_HUGETLBFS |
41151e77 | 464 | bool |
5a1eb5c4 | 465 | |
c67c3cb4 | 466 | source "mm/Kconfig" |
14cf11af | 467 | |
7e9191da MK |
468 | config ARCH_MEMORY_PROBE |
469 | def_bool y | |
470 | depends on MEMORY_HOTPLUG | |
471 | ||
75167957 AW |
472 | # Some NUMA nodes have memory ranges that span |
473 | # other nodes. Even though a pfn is valid and | |
474 | # between a node's start and end pfns, it may not | |
475 | # reside on that node. See memmap_init_zone() | |
476 | # for details. | |
477 | config NODES_SPAN_OTHER_NODES | |
478 | def_bool y | |
479 | depends on NEED_MULTIPLE_NODES | |
480 | ||
16c2d476 BH |
481 | config PPC_HAS_HASH_64K |
482 | bool | |
483 | depends on PPC64 | |
484 | default n | |
485 | ||
e1240122 YT |
486 | config STDBINUTILS |
487 | bool "Using standard binutils settings" | |
488 | depends on 44x | |
489 | default y | |
490 | help | |
491 | Turning this option off allows you to select 256KB PAGE_SIZE on 44x. | |
492 | Note, that kernel will be able to run only those applications, | |
493 | which had been compiled using binutils later than 2.17.50.0.3 with | |
494 | '-zmax-page-size' set to 256K (the default is 64K). Or, if using | |
495 | the older binutils, you can patch them with a trivial patch, which | |
496 | changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. | |
497 | ||
ca9153a3 IY |
498 | choice |
499 | prompt "Page size" | |
500 | default PPC_4K_PAGES | |
3c726f8d | 501 | help |
ca9153a3 IY |
502 | Select the kernel logical page size. Increasing the page size |
503 | will reduce software overhead at each page boundary, allow | |
504 | hardware prefetch mechanisms to be more effective, and allow | |
505 | larger dma transfers increasing IO efficiency and reducing | |
506 | overhead. However the utilization of memory will increase. | |
507 | For example, each cached file will using a multiple of the | |
508 | page size to hold its contents and the difference between the | |
509 | end of file and the end of page is wasted. | |
510 | ||
511 | Some dedicated systems, such as software raid serving with | |
512 | accelerated calculations, have shown significant increases. | |
513 | ||
514 | If you configure a 64 bit kernel for 64k pages but the | |
515 | processor does not support them, then the kernel will simulate | |
516 | them with 4k pages, loading them on demand, but with the | |
517 | reduced software overhead and larger internal fragmentation. | |
518 | For the 32 bit kernel, a large page option will not be offered | |
519 | unless it is supported by the configured processor. | |
520 | ||
521 | If unsure, choose 4K_PAGES. | |
522 | ||
523 | config PPC_4K_PAGES | |
524 | bool "4k page size" | |
525 | ||
526 | config PPC_16K_PAGES | |
527 | bool "16k page size" if 44x | |
528 | ||
529 | config PPC_64K_PAGES | |
2d27cfd3 | 530 | bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 |
ca9153a3 IY |
531 | select PPC_HAS_HASH_64K if PPC_STD_MMU_64 |
532 | ||
e1240122 YT |
533 | config PPC_256K_PAGES |
534 | bool "256k page size" if 44x | |
adf213c4 | 535 | depends on !STDBINUTILS |
e1240122 YT |
536 | help |
537 | Make the page size 256k. | |
538 | ||
539 | As the ELF standard only requires alignment to support page | |
540 | sizes up to 64k, you will need to compile all of your user | |
541 | space applications with a non-standard binutils settings | |
542 | (see the STDBINUTILS description for details). | |
543 | ||
544 | Say N unless you know what you are doing. | |
545 | ||
ca9153a3 | 546 | endchoice |
3c726f8d | 547 | |
53bcddb9 SR |
548 | config FORCE_MAX_ZONEORDER |
549 | int "Maximum zone order" | |
066c4b87 BH |
550 | range 9 64 if PPC64 && PPC_64K_PAGES |
551 | default "9" if PPC64 && PPC_64K_PAGES | |
552 | range 13 64 if PPC64 && !PPC_64K_PAGES | |
553 | default "13" if PPC64 && !PPC_64K_PAGES | |
554 | range 9 64 if PPC32 && PPC_16K_PAGES | |
555 | default "9" if PPC32 && PPC_16K_PAGES | |
556 | range 7 64 if PPC32 && PPC_64K_PAGES | |
557 | default "7" if PPC32 && PPC_64K_PAGES | |
558 | range 5 64 if PPC32 && PPC_256K_PAGES | |
559 | default "5" if PPC32 && PPC_256K_PAGES | |
ebe40c5c | 560 | range 11 64 |
53bcddb9 SR |
561 | default "11" |
562 | help | |
563 | The kernel memory allocator divides physically contiguous memory | |
564 | blocks into "zones", where each zone is a power of two number of | |
565 | pages. This option selects the largest power of two that the kernel | |
566 | keeps in the memory allocator. If you need to allocate very large | |
567 | blocks of physically contiguous memory, then you may need to | |
568 | increase this value. | |
569 | ||
570 | This config option is actually maximum order plus one. For example, | |
571 | a value of 11 means that the largest free memory block is 2^10 pages. | |
572 | ||
573 | The page size is not necessarily 4KB. For example, on 64-bit | |
574 | systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep | |
575 | this in mind when choosing a value for this option. | |
576 | ||
fa28237c PM |
577 | config PPC_SUBPAGE_PROT |
578 | bool "Support setting protections for 4k subpages" | |
ca9153a3 | 579 | depends on PPC_STD_MMU_64 && PPC_64K_PAGES |
fa28237c PM |
580 | help |
581 | This option adds support for a system call to allow user programs | |
582 | to set access permissions (read/write, readonly, or no access) | |
583 | on the 4k subpages of each 64k page. | |
584 | ||
14cf11af PM |
585 | config SCHED_SMT |
586 | bool "SMT (Hyperthreading) scheduler support" | |
587 | depends on PPC64 && SMP | |
14cf11af PM |
588 | help |
589 | SMT scheduler support improves the CPU scheduler's decision making | |
590 | when dealing with POWER5 cpus at a cost of slightly increased | |
591 | overhead in some places. If unsure say N here. | |
592 | ||
b92a66a6 MN |
593 | config PPC_DENORMALISATION |
594 | bool "PowerPC denormalisation exception handling" | |
595 | depends on PPC_BOOK3S_64 | |
4e90a2a7 | 596 | default "y" if PPC_POWERNV |
b92a66a6 MN |
597 | ---help--- |
598 | Add support for handling denormalisation of single precision | |
599 | values. Useful for bare metal only. If unsure say Y here. | |
600 | ||
14cf11af PM |
601 | config CMDLINE_BOOL |
602 | bool "Default bootloader kernel arguments" | |
14cf11af PM |
603 | |
604 | config CMDLINE | |
605 | string "Initial kernel command string" | |
606 | depends on CMDLINE_BOOL | |
607 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
608 | help | |
609 | On some platforms, there is currently no way for the boot loader to | |
610 | pass arguments to the kernel. For these platforms, you can supply | |
611 | some command-line options at build time by entering them here. In | |
612 | most cases you will need to specify the root device here. | |
613 | ||
c356aa45 GL |
614 | config EXTRA_TARGETS |
615 | string "Additional default image types" | |
616 | help | |
617 | List additional targets to be built by the bootwrapper here (separated | |
618 | by spaces). This is useful for targets that depend of device tree | |
619 | files in the .dts directory. | |
620 | ||
621 | Targets in this list will be build as part of the default build | |
622 | target, or when the user does a 'make zImage' or a | |
623 | 'make zImage.initrd'. | |
624 | ||
625 | If unsure, leave blank | |
626 | ||
b28f5081 JB |
627 | config ARCH_WANTS_FREEZER_CONTROL |
628 | def_bool y | |
629 | depends on ADB_PMU | |
630 | ||
14cf11af | 631 | source kernel/power/Kconfig |
14cf11af PM |
632 | |
633 | config SECCOMP | |
634 | bool "Enable seccomp to safely compute untrusted bytecode" | |
635 | depends on PROC_FS | |
636 | default y | |
637 | help | |
638 | This kernel feature is useful for number crunching applications | |
639 | that may need to compute untrusted bytecode during their | |
640 | execution. By using pipes or other transports made available to | |
641 | the process as file descriptors supporting the read/write | |
642 | syscalls, it's possible to isolate those applications in | |
643 | their own address space using seccomp. Once seccomp is | |
644 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
645 | and the task is only allowed to execute a few safe syscalls | |
646 | defined by each seccomp mode. | |
647 | ||
648 | If unsure, say Y. Only embedded should say N here. | |
649 | ||
650 | endmenu | |
651 | ||
652 | config ISA_DMA_API | |
653 | bool | |
3d066d77 | 654 | default PCI |
14cf11af PM |
655 | |
656 | menu "Bus options" | |
657 | ||
658 | config ISA | |
659 | bool "Support for ISA-bus hardware" | |
933ee711 | 660 | depends on PPC_CHRP |
f9bd170a | 661 | select PPC_I8259 |
14cf11af PM |
662 | help |
663 | Find out whether you have ISA slots on your motherboard. ISA is the | |
664 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
665 | inside your box. If you have an Apple machine, say N here; if you | |
933ee711 PB |
666 | have an IBM RS/6000 or pSeries machine, say Y. If you have an |
667 | embedded board, consult your board documentation. | |
14cf11af | 668 | |
5ac6da66 CL |
669 | config ZONE_DMA |
670 | bool | |
671 | default y | |
672 | ||
af407c6d FT |
673 | config NEED_DMA_MAP_STATE |
674 | def_bool (PPC64 || NOT_COHERENT_CACHE) | |
675 | ||
e32205eb FT |
676 | config NEED_SG_DMA_LENGTH |
677 | def_bool y | |
678 | ||
14cf11af PM |
679 | config GENERIC_ISA_DMA |
680 | bool | |
1927445a | 681 | depends on ISA_DMA_API |
14cf11af PM |
682 | default y |
683 | ||
25635c71 PM |
684 | config PPC_INDIRECT_PCI |
685 | bool | |
686 | depends on PCI | |
63dafe57 | 687 | default y if 40x || 44x |
25635c71 PM |
688 | default n |
689 | ||
14cf11af PM |
690 | config EISA |
691 | bool | |
692 | ||
693 | config SBUS | |
694 | bool | |
695 | ||
08264cbc KG |
696 | config FSL_SOC |
697 | bool | |
698 | ||
55c44991 RZ |
699 | config FSL_PCI |
700 | bool | |
701 | select PPC_INDIRECT_PCI | |
d0839118 | 702 | select PCI_QUIRKS |
55c44991 | 703 | |
4ffd6952 AV |
704 | config FSL_PMC |
705 | bool | |
706 | default y | |
707 | depends on SUSPEND && (PPC_85xx || PPC_86xx) | |
708 | help | |
709 | Freescale MPC85xx/MPC86xx power management controller support | |
710 | (suspend/resume). For MPC83xx see platforms/83xx/suspend.c | |
711 | ||
d164f6d4 VG |
712 | config PPC4xx_CPM |
713 | bool | |
714 | default y | |
715 | depends on SUSPEND && (44x || 40x) | |
716 | help | |
717 | PPC4xx Clock Power Management (CPM) support (suspend/resume). | |
718 | It also enables support for two different idle states (idle-wait | |
719 | and idle-doze). | |
720 | ||
2a706919 SR |
721 | config 4xx_SOC |
722 | bool | |
723 | ||
acaa7aa3 | 724 | config FSL_LBC |
3ab8f2a2 RZ |
725 | bool "Freescale Local Bus support" |
726 | depends on FSL_SOC | |
acaa7aa3 | 727 | help |
3ab8f2a2 RZ |
728 | Enables reporting of errors from the Freescale local bus |
729 | controller. Also contains some common code used by | |
730 | drivers for specific local bus peripherals. | |
acaa7aa3 | 731 | |
a20cbdef PK |
732 | config FSL_IFC |
733 | bool | |
734 | depends on FSL_SOC | |
735 | ||
83ff9dcf AV |
736 | config FSL_GTM |
737 | bool | |
738 | depends on PPC_83xx || QUICC_ENGINE || CPM2 | |
739 | help | |
740 | Freescale General-purpose Timers support | |
741 | ||
14cf11af PM |
742 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
743 | config MCA | |
744 | bool | |
745 | ||
b500563b JR |
746 | # Platforms that what PCI turned unconditionally just do select PCI |
747 | # in their config node. Platforms that want to choose at config | |
748 | # time should select PPC_PCI_CHOICE | |
749 | config PPC_PCI_CHOICE | |
750 | bool | |
751 | ||
14cf11af | 752 | config PCI |
b500563b JR |
753 | bool "PCI support" if PPC_PCI_CHOICE |
754 | default y if !40x && !CPM2 && !8xx && !PPC_83xx \ | |
bcc48591 | 755 | && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON |
14cf11af | 756 | default PCI_QSPAN if !4xx && !CPM2 && 8xx |
335b8cf7 | 757 | select GENERIC_PCI_IOMAP |
14cf11af PM |
758 | help |
759 | Find out whether your system includes a PCI bus. PCI is the name of | |
760 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
761 | your box. If you say Y here, the kernel will include drivers and | |
762 | infrastructure code to support PCI bus devices. | |
763 | ||
764 | config PCI_DOMAINS | |
36e23590 MW |
765 | def_bool PCI |
766 | ||
767 | config PCI_SYSCALL | |
768 | def_bool PCI | |
14cf11af | 769 | |
14cf11af PM |
770 | config PCI_QSPAN |
771 | bool "QSpan PCI" | |
772 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 773 | select PPC_I8259 |
14cf11af PM |
774 | help |
775 | Say Y here if you have a system based on a Motorola 8xx-series | |
776 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
777 | ||
778 | config PCI_8260 | |
779 | bool | |
780 | depends on PCI && 8260 | |
25635c71 | 781 | select PPC_INDIRECT_PCI |
14cf11af PM |
782 | default y |
783 | ||
bb53bb3d JM |
784 | source "drivers/pci/pcie/Kconfig" |
785 | ||
14cf11af PM |
786 | source "drivers/pci/Kconfig" |
787 | ||
788 | source "drivers/pcmcia/Kconfig" | |
789 | ||
790 | source "drivers/pci/hotplug/Kconfig" | |
791 | ||
f1f389d5 ZW |
792 | config HAS_RAPIDIO |
793 | bool | |
794 | default n | |
795 | ||
796 | config RAPIDIO | |
797 | bool "RapidIO support" | |
388b78ad | 798 | depends on HAS_RAPIDIO || PCI |
f1f389d5 ZW |
799 | help |
800 | If you say Y here, the kernel will include drivers and | |
801 | infrastructure code to support RapidIO interconnect devices. | |
802 | ||
388b78ad AB |
803 | config FSL_RIO |
804 | bool "Freescale Embedded SRIO Controller support" | |
805 | depends on RAPIDIO && HAS_RAPIDIO | |
806 | default "n" | |
807 | ---help--- | |
808 | Include support for RapidIO controller on Freescale embedded | |
809 | processors (MPC8548, MPC8641, etc). | |
810 | ||
f1f389d5 ZW |
811 | source "drivers/rapidio/Kconfig" |
812 | ||
14cf11af PM |
813 | endmenu |
814 | ||
0f890c8d SP |
815 | config NONSTATIC_KERNEL |
816 | bool | |
817 | default n | |
818 | ||
14cf11af PM |
819 | menu "Advanced setup" |
820 | depends on PPC32 | |
821 | ||
822 | config ADVANCED_OPTIONS | |
823 | bool "Prompt for advanced kernel configuration options" | |
824 | help | |
825 | This option will enable prompting for a variety of advanced kernel | |
826 | configuration options. These options can cause the kernel to not | |
827 | work if they are set incorrectly, but can be used to optimize certain | |
828 | aspects of kernel memory management. | |
829 | ||
830 | Unless you know what you are doing, say N here. | |
831 | ||
832 | comment "Default settings for advanced configuration options are used" | |
833 | depends on !ADVANCED_OPTIONS | |
834 | ||
14cf11af PM |
835 | config LOWMEM_SIZE_BOOL |
836 | bool "Set maximum low memory" | |
837 | depends on ADVANCED_OPTIONS | |
838 | help | |
839 | This option allows you to set the maximum amount of memory which | |
840 | will be used as "low memory", that is, memory which the kernel can | |
841 | access directly, without having to set up a kernel virtual mapping. | |
842 | This can be useful in optimizing the layout of kernel virtual | |
843 | memory. | |
844 | ||
845 | Say N here unless you know what you are doing. | |
846 | ||
847 | config LOWMEM_SIZE | |
848 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
849 | default "0x30000000" | |
850 | ||
96051465 TP |
851 | config LOWMEM_CAM_NUM_BOOL |
852 | bool "Set number of CAMs to use to map low memory" | |
853 | depends on ADVANCED_OPTIONS && FSL_BOOKE | |
854 | help | |
855 | This option allows you to set the maximum number of CAM slots that | |
856 | will be used to map low memory. There are a limited number of slots | |
857 | available and even more limited number that will fit in the L1 MMU. | |
858 | However, using more entries will allow mapping more low memory. This | |
859 | can be useful in optimizing the layout of kernel virtual memory. | |
860 | ||
861 | Say N here unless you know what you are doing. | |
862 | ||
863 | config LOWMEM_CAM_NUM | |
9b71dbd3 | 864 | depends on FSL_BOOKE |
96051465 TP |
865 | int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL |
866 | default 3 | |
867 | ||
0f890c8d | 868 | config DYNAMIC_MEMSTART |
642e56ff KC |
869 | bool "Enable page aligned dynamic load address for kernel" |
870 | depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) | |
0f890c8d SP |
871 | select NONSTATIC_KERNEL |
872 | help | |
873 | This option enables the kernel to be loaded at any page aligned | |
874 | physical address. The kernel creates a mapping from KERNELBASE to | |
875 | the address where the kernel is loaded. The page size here implies | |
876 | the TLB page size of the mapping for kernel on the particular platform. | |
877 | Please refer to the init code for finding the TLB page size. | |
878 | ||
879 | DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE | |
880 | kernel image, where the only restriction is the page aligned kernel | |
881 | load address. When this option is enabled, the compile time physical | |
882 | address CONFIG_PHYSICAL_START is ignored. | |
883 | ||
9c5f7d39 SP |
884 | This option is overridden by CONFIG_RELOCATABLE |
885 | ||
37dd2bad | 886 | config RELOCATABLE |
642e56ff KC |
887 | bool "Build a relocatable kernel" |
888 | depends on ADVANCED_OPTIONS && FLATMEM && 44x | |
9c5f7d39 | 889 | select NONSTATIC_KERNEL |
37dd2bad KG |
890 | help |
891 | This builds a kernel image that is capable of running at the | |
9c5f7d39 SP |
892 | location the kernel is loaded at, without any alignment restrictions. |
893 | This feature is a superset of DYNAMIC_MEMSTART and hence overrides it. | |
37dd2bad KG |
894 | |
895 | One use is for the kexec on panic case where the recovery kernel | |
896 | must live at a different physical address than the primary | |
897 | kernel. | |
898 | ||
899 | Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address | |
900 | it has been loaded at and the compile time physical addresses | |
901 | CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START | |
902 | setting can still be useful to bootwrappers that need to know the | |
9c5f7d39 SP |
903 | load address of the kernel (eg. u-boot/mkimage). |
904 | ||
905 | config RELOCATABLE_PPC32 | |
906 | def_bool y | |
907 | depends on PPC32 && RELOCATABLE | |
37dd2bad KG |
908 | |
909 | config PAGE_OFFSET_BOOL | |
910 | bool "Set custom page offset address" | |
911 | depends on ADVANCED_OPTIONS | |
912 | help | |
913 | This option allows you to set the kernel virtual address at which | |
914 | the kernel will map low memory. This can be useful in optimizing | |
915 | the virtual memory layout of the system. | |
916 | ||
917 | Say N here unless you know what you are doing. | |
918 | ||
919 | config PAGE_OFFSET | |
920 | hex "Virtual address of memory base" if PAGE_OFFSET_BOOL | |
921 | default "0xc0000000" | |
922 | ||
14cf11af PM |
923 | config KERNEL_START_BOOL |
924 | bool "Set custom kernel base address" | |
925 | depends on ADVANCED_OPTIONS | |
926 | help | |
927 | This option allows you to set the kernel virtual address at which | |
37dd2bad KG |
928 | the kernel will be loaded. Normally this should match PAGE_OFFSET |
929 | however there are times (like kdump) that one might not want them | |
930 | to be the same. | |
14cf11af PM |
931 | |
932 | Say N here unless you know what you are doing. | |
933 | ||
934 | config KERNEL_START | |
935 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
37dd2bad | 936 | default PAGE_OFFSET if PAGE_OFFSET_BOOL |
0f890c8d | 937 | default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL |
14cf11af PM |
938 | default "0xc0000000" |
939 | ||
37dd2bad KG |
940 | config PHYSICAL_START_BOOL |
941 | bool "Set physical address where the kernel is loaded" | |
942 | depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
943 | help | |
944 | This gives the physical address where the kernel is loaded. | |
945 | ||
946 | Say N here unless you know what you are doing. | |
947 | ||
948 | config PHYSICAL_START | |
949 | hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL | |
0f890c8d | 950 | default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL |
37dd2bad KG |
951 | default "0x00000000" |
952 | ||
953 | config PHYSICAL_ALIGN | |
954 | hex | |
c8f3570b | 955 | default "0x04000000" if FSL_BOOKE |
37dd2bad KG |
956 | help |
957 | This value puts the alignment restrictions on physical address | |
958 | where kernel is loaded and run from. Kernel is compiled for an | |
959 | address which meets above alignment restriction. | |
960 | ||
14cf11af PM |
961 | config TASK_SIZE_BOOL |
962 | bool "Set custom user task size" | |
963 | depends on ADVANCED_OPTIONS | |
964 | help | |
965 | This option allows you to set the amount of virtual address space | |
966 | allocated to user tasks. This can be useful in optimizing the | |
967 | virtual memory layout of the system. | |
968 | ||
969 | Say N here unless you know what you are doing. | |
970 | ||
971 | config TASK_SIZE | |
972 | hex "Size of user task space" if TASK_SIZE_BOOL | |
933ee711 | 973 | default "0x80000000" if PPC_8xx |
4d9e5510 | 974 | default "0xc0000000" |
14cf11af | 975 | |
84532a0f BH |
976 | config CONSISTENT_SIZE_BOOL |
977 | bool "Set custom consistent memory pool size" | |
978 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
979 | help | |
980 | This option allows you to set the size of the | |
981 | consistent memory pool. This pool of virtual memory | |
982 | is used to make consistent memory allocations. | |
983 | ||
984 | config CONSISTENT_SIZE | |
985 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
986 | default "0x00200000" if NOT_COHERENT_CACHE | |
987 | ||
14cf11af PM |
988 | config PIN_TLB |
989 | bool "Pinned Kernel TLBs (860 ONLY)" | |
990 | depends on ADVANCED_OPTIONS && 8xx | |
991 | endmenu | |
992 | ||
cabb5587 | 993 | if PPC64 |
549e8152 PM |
994 | config RELOCATABLE |
995 | bool "Build a relocatable kernel" | |
0f890c8d | 996 | select NONSTATIC_KERNEL |
549e8152 PM |
997 | help |
998 | This builds a kernel image that is capable of running anywhere | |
999 | in the RMA (real memory area) at any 16k-aligned base address. | |
1000 | The kernel is linked as a position-independent executable (PIE) | |
1001 | and contains dynamic relocations which are processed early | |
1002 | in the bootup process. | |
1003 | ||
1004 | One use is for the kexec on panic case where the recovery kernel | |
1005 | must live at a different physical address than the primary | |
1006 | kernel. | |
1007 | ||
bdbc29c1 | 1008 | # This value must have zeroes in the bottom 60 bits otherwise lots will break |
37dd2bad KG |
1009 | config PAGE_OFFSET |
1010 | hex | |
1011 | default "0xc000000000000000" | |
cabb5587 SR |
1012 | config KERNEL_START |
1013 | hex | |
eeb2d218 | 1014 | default "0xc000000000000000" |
37dd2bad KG |
1015 | config PHYSICAL_START |
1016 | hex | |
37dd2bad | 1017 | default "0x00000000" |
cabb5587 SR |
1018 | endif |
1019 | ||
a4da0d50 ME |
1020 | config ARCH_RANDOM |
1021 | def_bool n | |
1022 | ||
14cf11af PM |
1023 | source "net/Kconfig" |
1024 | ||
1025 | source "drivers/Kconfig" | |
1026 | ||
1027 | source "fs/Kconfig" | |
1028 | ||
98658538 LY |
1029 | source "arch/powerpc/sysdev/qe_lib/Kconfig" |
1030 | ||
14cf11af PM |
1031 | source "lib/Kconfig" |
1032 | ||
14cf11af PM |
1033 | source "arch/powerpc/Kconfig.debug" |
1034 | ||
1035 | source "security/Kconfig" | |
1036 | ||
1037 | config KEYS_COMPAT | |
1038 | bool | |
1039 | depends on COMPAT && KEYS | |
1040 | default y | |
1041 | ||
1042 | source "crypto/Kconfig" | |
6f668280 DP |
1043 | |
1044 | config PPC_CLOCK | |
1045 | bool | |
1046 | default n | |
9483a578 | 1047 | select HAVE_CLK |
1088a209 SM |
1048 | |
1049 | config PPC_LIB_RHEAP | |
1050 | bool | |
1051 | ||
bbf45ba5 | 1052 | source "arch/powerpc/kvm/Kconfig" |