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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 | ||
aa3be5f3 TB |
30 | config GENERIC_CMOS_UPDATE |
31 | def_bool y | |
32 | ||
4a4cfe38 TB |
33 | config GENERIC_TIME_VSYSCALL |
34 | def_bool y | |
35 | ||
d831d0b8 TB |
36 | config GENERIC_CLOCKEVENTS |
37 | def_bool y | |
38 | ||
c2a7e818 | 39 | config HAVE_SETUP_PER_CPU_AREA |
e74e3962 TH |
40 | def_bool PPC64 |
41 | ||
c2a7e818 | 42 | config NEED_PER_CPU_EMBED_FIRST_CHUNK |
b32ef636 | 43 | def_bool PPC64 |
44 | ||
551b81f2 ME |
45 | config NR_IRQS |
46 | int "Number of virtual interrupt numbers" | |
859aefc5 | 47 | range 32 32768 |
551b81f2 ME |
48 | default "512" |
49 | help | |
50 | This defines the number of virtual interrupt numbers the kernel | |
51 | can manage. Virtual interrupt numbers are what you see in | |
52 | /proc/interrupts. If you configure your system to have too few, | |
53 | drivers will fail to load or worse - handle with care. | |
54 | ||
fd3e0bbc CH |
55 | config STACKTRACE_SUPPORT |
56 | bool | |
57 | default y | |
58 | ||
01f4b8b8 AB |
59 | config HAVE_LATENCYTOP_SUPPORT |
60 | def_bool y | |
61 | ||
945feb17 BH |
62 | config TRACE_IRQFLAGS_SUPPORT |
63 | bool | |
945feb17 BH |
64 | default y |
65 | ||
66 | config LOCKDEP_SUPPORT | |
67 | bool | |
68 | default y | |
69 | ||
14cf11af PM |
70 | config RWSEM_GENERIC_SPINLOCK |
71 | bool | |
72 | ||
73 | config RWSEM_XCHGADD_ALGORITHM | |
74 | bool | |
75 | default y | |
76 | ||
95c354fe NP |
77 | config GENERIC_LOCKBREAK |
78 | bool | |
79 | default y | |
80 | depends on SMP && PREEMPT | |
81 | ||
f0d1b0b3 DH |
82 | config ARCH_HAS_ILOG2_U32 |
83 | bool | |
ef55d53c | 84 | default y |
f0d1b0b3 DH |
85 | |
86 | config ARCH_HAS_ILOG2_U64 | |
87 | bool | |
ef55d53c | 88 | default y if 64BIT |
f0d1b0b3 | 89 | |
771dae81 DD |
90 | config ARCH_HAS_CPU_IDLE_WAIT |
91 | bool | |
92 | default y | |
93 | ||
e779b2f9 AM |
94 | config GENERIC_HWEIGHT |
95 | bool | |
96 | default y | |
97 | ||
b7ce3415 AV |
98 | config GENERIC_GPIO |
99 | bool | |
100 | help | |
101 | Generic GPIO API support | |
102 | ||
f057eac0 SR |
103 | config ARCH_NO_VIRT_TO_BUS |
104 | def_bool PPC64 | |
105 | ||
14cf11af PM |
106 | config PPC |
107 | bool | |
108 | default y | |
10f85f43 | 109 | select OF |
e6ce1324 | 110 | select OF_EARLY_FLATTREE |
2b79d696 SR |
111 | select HAVE_FTRACE_MCOUNT_RECORD |
112 | select HAVE_DYNAMIC_FTRACE | |
606576ce | 113 | select HAVE_FUNCTION_TRACER |
60ce8f72 | 114 | select HAVE_FUNCTION_GRAPH_TRACER |
7444a72e | 115 | select ARCH_WANT_OPTIONAL_GPIOLIB |
ec7748b5 | 116 | select HAVE_IDE |
a1f242ff | 117 | select HAVE_IOREMAP_PROT |
58340a07 | 118 | select HAVE_EFFICIENT_UNALIGNED_ACCESS |
3f550096 | 119 | select HAVE_KPROBES |
17ce452f | 120 | select HAVE_ARCH_KGDB |
9edddaa2 | 121 | select HAVE_KRETPROBES |
dec2b0d0 | 122 | select HAVE_ARCH_TRACEHOOK |
95f72d1e | 123 | select HAVE_MEMBLOCK |
1d7cfe18 | 124 | select HAVE_MEMBLOCK_NODE_MAP |
46bab4e4 | 125 | select HAVE_DMA_ATTRS |
80d3e8ab | 126 | select HAVE_DMA_API_DEBUG |
b7d7a240 | 127 | select USE_GENERIC_SMP_HELPERS if SMP |
4e491d14 | 128 | select HAVE_OPROFILE |
ee6a0932 | 129 | select HAVE_SYSCALL_WRAPPERS if PPC64 |
c2e95c6d | 130 | select GENERIC_ATOMIC64 if PPC32 |
e360adbe | 131 | select HAVE_IRQ_WORK |
cdd6c482 | 132 | select HAVE_PERF_EVENTS |
359e4284 | 133 | select HAVE_REGS_AND_STACK_ACCESS_API |
5aae8a53 | 134 | select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 |
2604362b | 135 | select HAVE_GENERIC_HARDIRQS |
ad5b7f13 | 136 | select SPARSE_IRQ |
2604362b | 137 | select IRQ_PER_CPU |
cc79ca69 | 138 | select IRQ_DOMAIN |
433c9c67 TG |
139 | select GENERIC_IRQ_SHOW |
140 | select GENERIC_IRQ_SHOW_LEVEL | |
e8d2c473 | 141 | select IRQ_FORCED_THREADING |
26723911 | 142 | select HAVE_RCU_TABLE_FREE if SMP |
02424d89 | 143 | select HAVE_SYSCALL_TRACEPOINTS |
368940d0 | 144 | select HAVE_BPF_JIT if (PPC64 && NET) |
ac5f89c7 | 145 | select HAVE_ARCH_JUMP_LABEL |
df013ffb | 146 | select ARCH_HAVE_NMI_SAFE_CMPXCHG |
14cf11af PM |
147 | |
148 | config EARLY_PRINTK | |
149 | bool | |
51d3082f | 150 | default y |
14cf11af PM |
151 | |
152 | config COMPAT | |
153 | bool | |
154 | default y if PPC64 | |
01e31dba | 155 | select COMPAT_BINFMT_ELF |
48b25c43 | 156 | select ARCH_WANT_OLD_COMPAT_IPC |
14cf11af PM |
157 | |
158 | config SYSVIPC_COMPAT | |
159 | bool | |
160 | depends on COMPAT && SYSVIPC | |
161 | default y | |
162 | ||
163 | # All PPC32s use generic nvram driver through ppc_md | |
164 | config GENERIC_NVRAM | |
165 | bool | |
166 | default y if PPC32 | |
167 | ||
ae1e9130 | 168 | config SCHED_OMIT_FRAME_POINTER |
14cf11af PM |
169 | bool |
170 | default y | |
171 | ||
172 | config ARCH_MAY_HAVE_PC_FDC | |
173 | bool | |
bed59275 | 174 | default !PPC_PSERIES || PCI |
14cf11af | 175 | |
08264cbc KG |
176 | config PPC_OF |
177 | def_bool y | |
178 | ||
179 | config PPC_UDBG_16550 | |
180 | bool | |
181 | default n | |
182 | ||
08264cbc KG |
183 | config GENERIC_TBSYNC |
184 | bool | |
185 | default y if PPC32 && SMP | |
186 | default n | |
187 | ||
e65e1fc2 AV |
188 | config AUDIT_ARCH |
189 | bool | |
190 | default y | |
191 | ||
73c9ceab JF |
192 | config GENERIC_BUG |
193 | bool | |
194 | default y | |
195 | depends on BUG | |
196 | ||
b3028878 | 197 | config SYS_SUPPORTS_APM_EMULATION |
58da10bb | 198 | default y if PMAC_APM_EMU |
b3028878 JB |
199 | bool |
200 | ||
6c5b59b9 DG |
201 | config EPAPR_BOOT |
202 | bool | |
203 | help | |
204 | Used to allow a board to specify it wants an ePAPR compliant wrapper. | |
205 | default n | |
206 | ||
f4fc4a5b KG |
207 | config DEFAULT_UIMAGE |
208 | bool | |
209 | help | |
210 | Used to allow a board to specify it wants a uImage built by default | |
211 | default n | |
212 | ||
b09c1644 SW |
213 | config REDBOOT |
214 | bool | |
215 | ||
801e4062 JB |
216 | config ARCH_HIBERNATION_POSSIBLE |
217 | bool | |
543b9fd3 JB |
218 | default y |
219 | ||
f4cb5700 JB |
220 | config ARCH_SUSPEND_POSSIBLE |
221 | def_bool y | |
4ffd6952 | 222 | depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ |
e5462d16 | 223 | (PPC_85xx && !SMP) || PPC_86xx || PPC_PSERIES || 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 | ||
172ae2e7 DK |
247 | config PPC_ADV_DEBUG_REGS |
248 | bool | |
249 | depends on 40x || BOOKE | |
250 | default y | |
251 | ||
252 | config PPC_ADV_DEBUG_IACS | |
253 | int | |
254 | depends on PPC_ADV_DEBUG_REGS | |
255 | default 4 if 44x | |
256 | default 2 | |
257 | ||
258 | config PPC_ADV_DEBUG_DACS | |
259 | int | |
260 | depends on PPC_ADV_DEBUG_REGS | |
261 | default 2 | |
262 | ||
263 | config PPC_ADV_DEBUG_DVCS | |
264 | int | |
265 | depends on PPC_ADV_DEBUG_REGS | |
266 | default 2 if 44x | |
267 | default 0 | |
268 | ||
269 | config PPC_ADV_DEBUG_DAC_RANGE | |
270 | bool | |
271 | depends on PPC_ADV_DEBUG_REGS && 44x | |
272 | default y | |
273 | ||
14cf11af PM |
274 | source "init/Kconfig" |
275 | ||
dc52ddc0 MH |
276 | source "kernel/Kconfig.freezer" |
277 | ||
a2d2e1ec | 278 | source "arch/powerpc/sysdev/Kconfig" |
4330f5da | 279 | source "arch/powerpc/platforms/Kconfig" |
14cf11af | 280 | |
14cf11af PM |
281 | menu "Kernel options" |
282 | ||
283 | config HIGHMEM | |
284 | bool "High memory support" | |
285 | depends on PPC32 | |
286 | ||
1ad74998 | 287 | source kernel/time/Kconfig |
14cf11af PM |
288 | source kernel/Kconfig.hz |
289 | source kernel/Kconfig.preempt | |
290 | source "fs/Kconfig.binfmt" | |
291 | ||
ba72cb8c MG |
292 | config HUGETLB_PAGE_SIZE_VARIABLE |
293 | bool | |
294 | depends on HUGETLB_PAGE | |
295 | default y | |
296 | ||
14cf11af PM |
297 | config MATH_EMULATION |
298 | bool "Math emulation" | |
4d52719a | 299 | depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 |
14cf11af PM |
300 | ---help--- |
301 | Some PowerPC chips designed for embedded applications do not have | |
302 | a floating-point unit and therefore do not implement the | |
303 | floating-point instructions in the PowerPC instruction set. If you | |
304 | say Y here, the kernel will include code to emulate a floating-point | |
305 | unit, which will allow programs that use floating-point | |
306 | instructions to run. | |
307 | ||
5dd57a13 SW |
308 | config 8XX_MINIMAL_FPEMU |
309 | bool "Minimal math emulation for 8xx" | |
310 | depends on 8xx && !MATH_EMULATION | |
311 | help | |
312 | Older arch/ppc kernels still emulated a few floating point | |
313 | instructions such as load and store, even when full math | |
314 | emulation is disabled. Say "Y" here if you want to preserve | |
315 | this behavior. | |
316 | ||
317 | It is recommended that you build a soft-float userspace instead. | |
318 | ||
fb3475e9 FT |
319 | config IOMMU_HELPER |
320 | def_bool PPC64 | |
321 | ||
ec3cf2ec BB |
322 | config SWIOTLB |
323 | bool "SWIOTLB support" | |
324 | default n | |
325 | select IOMMU_HELPER | |
326 | ---help--- | |
327 | Support for IO bounce buffering for systems without an IOMMU. | |
328 | This allows us to DMA to the full physical address space on | |
329 | platforms where the size of a physical address is larger | |
330 | than the bus address. Not all platforms support this. | |
331 | ||
14cf11af PM |
332 | config HOTPLUG_CPU |
333 | bool "Support for enabling/disabling CPUs" | |
344eb010 | 334 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV) |
14cf11af PM |
335 | ---help--- |
336 | Say Y here to be able to disable and re-enable individual | |
337 | CPUs at runtime on SMP machines. | |
338 | ||
339 | Say N if you are unsure. | |
340 | ||
12633e80 NF |
341 | config ARCH_CPU_PROBE_RELEASE |
342 | def_bool y | |
343 | depends on HOTPLUG_CPU | |
344 | ||
cc57637b YG |
345 | config ARCH_ENABLE_MEMORY_HOTPLUG |
346 | def_bool y | |
347 | ||
a99824f3 BP |
348 | config ARCH_HAS_WALK_MEMORY |
349 | def_bool y | |
350 | ||
1482471d BP |
351 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
352 | def_bool y | |
353 | ||
14cf11af PM |
354 | config KEXEC |
355 | bool "kexec system call (EXPERIMENTAL)" | |
bbc24a25 | 356 | depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP && !PPC_47x)) && EXPERIMENTAL |
14cf11af PM |
357 | help |
358 | kexec is a system call that implements the ability to shutdown your | |
359 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 360 | but it is independent of the system firmware. And like a reboot |
14cf11af PM |
361 | you can start any kernel with it, not just Linux. |
362 | ||
1f1332f7 | 363 | The name comes from the similarity to the exec system call. |
14cf11af PM |
364 | |
365 | It is an ongoing process to be certain the hardware in a machine | |
366 | is properly shutdown, so do not be surprised if this code does not | |
367 | initially work for you. It may help to enable device hotplugging | |
368 | support. As of this writing the exact hardware interface is | |
369 | strongly in flux, so no good recommendation can be made. | |
370 | ||
e8625d46 | 371 | config CRASH_DUMP |
3420b5da | 372 | bool "Build a kdump crash kernel" |
5b2e478d SP |
373 | depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP && !PPC_47x) |
374 | select RELOCATABLE if PPC64 || 44x | |
0f890c8d | 375 | select DYNAMIC_MEMSTART if FSL_BOOKE |
e8625d46 HM |
376 | help |
377 | Build a kernel suitable for use as a kdump capture kernel. | |
54622f10 MK |
378 | The same kernel binary can be used as production kernel and dump |
379 | capture kernel. | |
e8625d46 | 380 | |
eb39c880 MS |
381 | config FA_DUMP |
382 | bool "Firmware-assisted dump" | |
383 | depends on PPC64 && PPC_RTAS && CRASH_DUMP | |
242f271c | 384 | help |
eb39c880 MS |
385 | A robust mechanism to get reliable kernel crash dump with |
386 | assistance from firmware. This approach does not use kexec, | |
387 | instead firmware assists in booting the kdump kernel | |
388 | while preserving memory contents. Firmware-assisted dump | |
389 | is meant to be a kdump replacement offering robustness and | |
390 | speed not possible without system firmware assistance. | |
242f271c MA |
391 | |
392 | If unsure, say "N" | |
393 | ||
14cf11af PM |
394 | config IRQ_ALL_CPUS |
395 | bool "Distribute interrupts on all CPUs by default" | |
396 | depends on SMP && !MV64360 | |
397 | help | |
398 | This option gives the kernel permission to distribute IRQs across | |
399 | multiple CPUs. Saying N here will route all IRQs to the first | |
400 | CPU. Generally saying Y is safe, although some problems have been | |
401 | reported with SMP Power Macintoshes with this option enabled. | |
402 | ||
ffa27b6b AW |
403 | config NUMA |
404 | bool "NUMA support" | |
405 | depends on PPC64 | |
406 | default y if SMP && PPC_PSERIES | |
407 | ||
c80d79d7 YG |
408 | config NODES_SHIFT |
409 | int | |
ea55bf29 | 410 | default "8" if PPC64 |
c80d79d7 YG |
411 | default "4" |
412 | depends on NEED_MULTIPLE_NODES | |
413 | ||
ea55bf29 AB |
414 | config MAX_ACTIVE_REGIONS |
415 | int | |
416 | default "256" if PPC64 | |
417 | default "32" | |
418 | ||
14cf11af PM |
419 | config ARCH_SELECT_MEMORY_MODEL |
420 | def_bool y | |
421 | depends on PPC64 | |
422 | ||
423 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
424 | def_bool y |
425 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 426 | |
45fb6cea | 427 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 428 | def_bool y |
9100b205 | 429 | depends on PPC64 |
d29eff7b | 430 | select SPARSEMEM_VMEMMAP_ENABLE |
14cf11af | 431 | |
45fb6cea | 432 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 433 | def_bool y |
78bde53e | 434 | depends on (SMP && PPC_PSERIES) || PPC_PS3 |
14cf11af | 435 | |
5a1eb5c4 | 436 | config SYS_SUPPORTS_HUGETLBFS |
41151e77 | 437 | bool |
5a1eb5c4 | 438 | |
c67c3cb4 | 439 | source "mm/Kconfig" |
14cf11af | 440 | |
7e9191da MK |
441 | config ARCH_MEMORY_PROBE |
442 | def_bool y | |
443 | depends on MEMORY_HOTPLUG | |
444 | ||
75167957 AW |
445 | # Some NUMA nodes have memory ranges that span |
446 | # other nodes. Even though a pfn is valid and | |
447 | # between a node's start and end pfns, it may not | |
448 | # reside on that node. See memmap_init_zone() | |
449 | # for details. | |
450 | config NODES_SPAN_OTHER_NODES | |
451 | def_bool y | |
452 | depends on NEED_MULTIPLE_NODES | |
453 | ||
16c2d476 BH |
454 | config PPC_HAS_HASH_64K |
455 | bool | |
456 | depends on PPC64 | |
457 | default n | |
458 | ||
e1240122 YT |
459 | config STDBINUTILS |
460 | bool "Using standard binutils settings" | |
461 | depends on 44x | |
462 | default y | |
463 | help | |
464 | Turning this option off allows you to select 256KB PAGE_SIZE on 44x. | |
465 | Note, that kernel will be able to run only those applications, | |
466 | which had been compiled using binutils later than 2.17.50.0.3 with | |
467 | '-zmax-page-size' set to 256K (the default is 64K). Or, if using | |
468 | the older binutils, you can patch them with a trivial patch, which | |
469 | changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. | |
470 | ||
ca9153a3 IY |
471 | choice |
472 | prompt "Page size" | |
473 | default PPC_4K_PAGES | |
3c726f8d | 474 | help |
ca9153a3 IY |
475 | Select the kernel logical page size. Increasing the page size |
476 | will reduce software overhead at each page boundary, allow | |
477 | hardware prefetch mechanisms to be more effective, and allow | |
478 | larger dma transfers increasing IO efficiency and reducing | |
479 | overhead. However the utilization of memory will increase. | |
480 | For example, each cached file will using a multiple of the | |
481 | page size to hold its contents and the difference between the | |
482 | end of file and the end of page is wasted. | |
483 | ||
484 | Some dedicated systems, such as software raid serving with | |
485 | accelerated calculations, have shown significant increases. | |
486 | ||
487 | If you configure a 64 bit kernel for 64k pages but the | |
488 | processor does not support them, then the kernel will simulate | |
489 | them with 4k pages, loading them on demand, but with the | |
490 | reduced software overhead and larger internal fragmentation. | |
491 | For the 32 bit kernel, a large page option will not be offered | |
492 | unless it is supported by the configured processor. | |
493 | ||
494 | If unsure, choose 4K_PAGES. | |
495 | ||
496 | config PPC_4K_PAGES | |
497 | bool "4k page size" | |
498 | ||
499 | config PPC_16K_PAGES | |
500 | bool "16k page size" if 44x | |
501 | ||
502 | config PPC_64K_PAGES | |
2d27cfd3 | 503 | bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 |
ca9153a3 IY |
504 | select PPC_HAS_HASH_64K if PPC_STD_MMU_64 |
505 | ||
e1240122 YT |
506 | config PPC_256K_PAGES |
507 | bool "256k page size" if 44x | |
adf213c4 | 508 | depends on !STDBINUTILS |
e1240122 YT |
509 | help |
510 | Make the page size 256k. | |
511 | ||
512 | As the ELF standard only requires alignment to support page | |
513 | sizes up to 64k, you will need to compile all of your user | |
514 | space applications with a non-standard binutils settings | |
515 | (see the STDBINUTILS description for details). | |
516 | ||
517 | Say N unless you know what you are doing. | |
518 | ||
ca9153a3 | 519 | endchoice |
3c726f8d | 520 | |
53bcddb9 SR |
521 | config FORCE_MAX_ZONEORDER |
522 | int "Maximum zone order" | |
066c4b87 BH |
523 | range 9 64 if PPC64 && PPC_64K_PAGES |
524 | default "9" if PPC64 && PPC_64K_PAGES | |
525 | range 13 64 if PPC64 && !PPC_64K_PAGES | |
526 | default "13" if PPC64 && !PPC_64K_PAGES | |
527 | range 9 64 if PPC32 && PPC_16K_PAGES | |
528 | default "9" if PPC32 && PPC_16K_PAGES | |
529 | range 7 64 if PPC32 && PPC_64K_PAGES | |
530 | default "7" if PPC32 && PPC_64K_PAGES | |
531 | range 5 64 if PPC32 && PPC_256K_PAGES | |
532 | default "5" if PPC32 && PPC_256K_PAGES | |
ebe40c5c | 533 | range 11 64 |
53bcddb9 SR |
534 | default "11" |
535 | help | |
536 | The kernel memory allocator divides physically contiguous memory | |
537 | blocks into "zones", where each zone is a power of two number of | |
538 | pages. This option selects the largest power of two that the kernel | |
539 | keeps in the memory allocator. If you need to allocate very large | |
540 | blocks of physically contiguous memory, then you may need to | |
541 | increase this value. | |
542 | ||
543 | This config option is actually maximum order plus one. For example, | |
544 | a value of 11 means that the largest free memory block is 2^10 pages. | |
545 | ||
546 | The page size is not necessarily 4KB. For example, on 64-bit | |
547 | systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep | |
548 | this in mind when choosing a value for this option. | |
549 | ||
fa28237c PM |
550 | config PPC_SUBPAGE_PROT |
551 | bool "Support setting protections for 4k subpages" | |
ca9153a3 | 552 | depends on PPC_STD_MMU_64 && PPC_64K_PAGES |
fa28237c PM |
553 | help |
554 | This option adds support for a system call to allow user programs | |
555 | to set access permissions (read/write, readonly, or no access) | |
556 | on the 4k subpages of each 64k page. | |
557 | ||
14cf11af PM |
558 | config SCHED_SMT |
559 | bool "SMT (Hyperthreading) scheduler support" | |
560 | depends on PPC64 && SMP | |
14cf11af PM |
561 | help |
562 | SMT scheduler support improves the CPU scheduler's decision making | |
563 | when dealing with POWER5 cpus at a cost of slightly increased | |
564 | overhead in some places. If unsure say N here. | |
565 | ||
14cf11af PM |
566 | config CMDLINE_BOOL |
567 | bool "Default bootloader kernel arguments" | |
14cf11af PM |
568 | |
569 | config CMDLINE | |
570 | string "Initial kernel command string" | |
571 | depends on CMDLINE_BOOL | |
572 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
573 | help | |
574 | On some platforms, there is currently no way for the boot loader to | |
575 | pass arguments to the kernel. For these platforms, you can supply | |
576 | some command-line options at build time by entering them here. In | |
577 | most cases you will need to specify the root device here. | |
578 | ||
c356aa45 GL |
579 | config EXTRA_TARGETS |
580 | string "Additional default image types" | |
581 | help | |
582 | List additional targets to be built by the bootwrapper here (separated | |
583 | by spaces). This is useful for targets that depend of device tree | |
584 | files in the .dts directory. | |
585 | ||
586 | Targets in this list will be build as part of the default build | |
587 | target, or when the user does a 'make zImage' or a | |
588 | 'make zImage.initrd'. | |
589 | ||
590 | If unsure, leave blank | |
591 | ||
b28f5081 JB |
592 | config ARCH_WANTS_FREEZER_CONTROL |
593 | def_bool y | |
594 | depends on ADB_PMU | |
595 | ||
14cf11af | 596 | source kernel/power/Kconfig |
14cf11af PM |
597 | |
598 | config SECCOMP | |
599 | bool "Enable seccomp to safely compute untrusted bytecode" | |
600 | depends on PROC_FS | |
601 | default y | |
602 | help | |
603 | This kernel feature is useful for number crunching applications | |
604 | that may need to compute untrusted bytecode during their | |
605 | execution. By using pipes or other transports made available to | |
606 | the process as file descriptors supporting the read/write | |
607 | syscalls, it's possible to isolate those applications in | |
608 | their own address space using seccomp. Once seccomp is | |
609 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
610 | and the task is only allowed to execute a few safe syscalls | |
611 | defined by each seccomp mode. | |
612 | ||
613 | If unsure, say Y. Only embedded should say N here. | |
614 | ||
615 | endmenu | |
616 | ||
617 | config ISA_DMA_API | |
618 | bool | |
3d066d77 | 619 | default PCI |
14cf11af PM |
620 | |
621 | menu "Bus options" | |
622 | ||
623 | config ISA | |
624 | bool "Support for ISA-bus hardware" | |
625 | depends on PPC_PREP || PPC_CHRP | |
f9bd170a | 626 | select PPC_I8259 |
14cf11af PM |
627 | help |
628 | Find out whether you have ISA slots on your motherboard. ISA is the | |
629 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
630 | inside your box. If you have an Apple machine, say N here; if you | |
631 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If | |
632 | you have an embedded board, consult your board documentation. | |
633 | ||
5ac6da66 CL |
634 | config ZONE_DMA |
635 | bool | |
636 | default y | |
637 | ||
af407c6d FT |
638 | config NEED_DMA_MAP_STATE |
639 | def_bool (PPC64 || NOT_COHERENT_CACHE) | |
640 | ||
e32205eb FT |
641 | config NEED_SG_DMA_LENGTH |
642 | def_bool y | |
643 | ||
14cf11af PM |
644 | config GENERIC_ISA_DMA |
645 | bool | |
1927445a | 646 | depends on ISA_DMA_API |
14cf11af PM |
647 | default y |
648 | ||
25635c71 PM |
649 | config PPC_INDIRECT_PCI |
650 | bool | |
651 | depends on PCI | |
63dafe57 | 652 | default y if 40x || 44x |
25635c71 PM |
653 | default n |
654 | ||
14cf11af PM |
655 | config EISA |
656 | bool | |
657 | ||
658 | config SBUS | |
659 | bool | |
660 | ||
08264cbc KG |
661 | config FSL_SOC |
662 | bool | |
b489da87 | 663 | select HAVE_CAN_FLEXCAN if NET && CAN |
664 | select PPC_CLOCK if CAN_FLEXCAN | |
08264cbc | 665 | |
55c44991 RZ |
666 | config FSL_PCI |
667 | bool | |
668 | select PPC_INDIRECT_PCI | |
d0839118 | 669 | select PCI_QUIRKS |
55c44991 | 670 | |
4ffd6952 AV |
671 | config FSL_PMC |
672 | bool | |
673 | default y | |
674 | depends on SUSPEND && (PPC_85xx || PPC_86xx) | |
675 | help | |
676 | Freescale MPC85xx/MPC86xx power management controller support | |
677 | (suspend/resume). For MPC83xx see platforms/83xx/suspend.c | |
678 | ||
d164f6d4 VG |
679 | config PPC4xx_CPM |
680 | bool | |
681 | default y | |
682 | depends on SUSPEND && (44x || 40x) | |
683 | help | |
684 | PPC4xx Clock Power Management (CPM) support (suspend/resume). | |
685 | It also enables support for two different idle states (idle-wait | |
686 | and idle-doze). | |
687 | ||
2a706919 SR |
688 | config 4xx_SOC |
689 | bool | |
690 | ||
acaa7aa3 | 691 | config FSL_LBC |
3ab8f2a2 RZ |
692 | bool "Freescale Local Bus support" |
693 | depends on FSL_SOC | |
acaa7aa3 | 694 | help |
3ab8f2a2 RZ |
695 | Enables reporting of errors from the Freescale local bus |
696 | controller. Also contains some common code used by | |
697 | drivers for specific local bus peripherals. | |
acaa7aa3 | 698 | |
a20cbdef PK |
699 | config FSL_IFC |
700 | bool | |
701 | depends on FSL_SOC | |
702 | ||
83ff9dcf AV |
703 | config FSL_GTM |
704 | bool | |
705 | depends on PPC_83xx || QUICC_ENGINE || CPM2 | |
706 | help | |
707 | Freescale General-purpose Timers support | |
708 | ||
14cf11af PM |
709 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
710 | config MCA | |
711 | bool | |
712 | ||
b500563b JR |
713 | # Platforms that what PCI turned unconditionally just do select PCI |
714 | # in their config node. Platforms that want to choose at config | |
715 | # time should select PPC_PCI_CHOICE | |
716 | config PPC_PCI_CHOICE | |
717 | bool | |
718 | ||
14cf11af | 719 | config PCI |
b500563b JR |
720 | bool "PCI support" if PPC_PCI_CHOICE |
721 | default y if !40x && !CPM2 && !8xx && !PPC_83xx \ | |
bcc48591 | 722 | && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON |
f21f49ea | 723 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx |
14cf11af | 724 | default PCI_QSPAN if !4xx && !CPM2 && 8xx |
df87ef55 | 725 | select ARCH_SUPPORTS_MSI |
335b8cf7 | 726 | select GENERIC_PCI_IOMAP |
14cf11af PM |
727 | help |
728 | Find out whether your system includes a PCI bus. PCI is the name of | |
729 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
730 | your box. If you say Y here, the kernel will include drivers and | |
731 | infrastructure code to support PCI bus devices. | |
732 | ||
733 | config PCI_DOMAINS | |
36e23590 MW |
734 | def_bool PCI |
735 | ||
736 | config PCI_SYSCALL | |
737 | def_bool PCI | |
14cf11af | 738 | |
14cf11af PM |
739 | config PCI_QSPAN |
740 | bool "QSpan PCI" | |
741 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 742 | select PPC_I8259 |
14cf11af PM |
743 | help |
744 | Say Y here if you have a system based on a Motorola 8xx-series | |
745 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
746 | ||
747 | config PCI_8260 | |
748 | bool | |
749 | depends on PCI && 8260 | |
25635c71 | 750 | select PPC_INDIRECT_PCI |
14cf11af PM |
751 | default y |
752 | ||
753 | config 8260_PCI9 | |
4a3ecc62 | 754 | bool "Enable workaround for MPC826x erratum PCI 9" |
e00c5498 | 755 | depends on PCI_8260 && !8272 |
14cf11af PM |
756 | default y |
757 | ||
bb53bb3d JM |
758 | source "drivers/pci/pcie/Kconfig" |
759 | ||
14cf11af PM |
760 | source "drivers/pci/Kconfig" |
761 | ||
762 | source "drivers/pcmcia/Kconfig" | |
763 | ||
764 | source "drivers/pci/hotplug/Kconfig" | |
765 | ||
f1f389d5 ZW |
766 | config HAS_RAPIDIO |
767 | bool | |
768 | default n | |
769 | ||
770 | config RAPIDIO | |
771 | bool "RapidIO support" | |
388b78ad | 772 | depends on HAS_RAPIDIO || PCI |
f1f389d5 ZW |
773 | help |
774 | If you say Y here, the kernel will include drivers and | |
775 | infrastructure code to support RapidIO interconnect devices. | |
776 | ||
388b78ad AB |
777 | config FSL_RIO |
778 | bool "Freescale Embedded SRIO Controller support" | |
779 | depends on RAPIDIO && HAS_RAPIDIO | |
780 | default "n" | |
781 | ---help--- | |
782 | Include support for RapidIO controller on Freescale embedded | |
783 | processors (MPC8548, MPC8641, etc). | |
784 | ||
f1f389d5 ZW |
785 | source "drivers/rapidio/Kconfig" |
786 | ||
14cf11af PM |
787 | endmenu |
788 | ||
0f890c8d SP |
789 | config NONSTATIC_KERNEL |
790 | bool | |
791 | default n | |
792 | ||
14cf11af PM |
793 | menu "Advanced setup" |
794 | depends on PPC32 | |
795 | ||
796 | config ADVANCED_OPTIONS | |
797 | bool "Prompt for advanced kernel configuration options" | |
798 | help | |
799 | This option will enable prompting for a variety of advanced kernel | |
800 | configuration options. These options can cause the kernel to not | |
801 | work if they are set incorrectly, but can be used to optimize certain | |
802 | aspects of kernel memory management. | |
803 | ||
804 | Unless you know what you are doing, say N here. | |
805 | ||
806 | comment "Default settings for advanced configuration options are used" | |
807 | depends on !ADVANCED_OPTIONS | |
808 | ||
14cf11af PM |
809 | config LOWMEM_SIZE_BOOL |
810 | bool "Set maximum low memory" | |
811 | depends on ADVANCED_OPTIONS | |
812 | help | |
813 | This option allows you to set the maximum amount of memory which | |
814 | will be used as "low memory", that is, memory which the kernel can | |
815 | access directly, without having to set up a kernel virtual mapping. | |
816 | This can be useful in optimizing the layout of kernel virtual | |
817 | memory. | |
818 | ||
819 | Say N here unless you know what you are doing. | |
820 | ||
821 | config LOWMEM_SIZE | |
822 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
823 | default "0x30000000" | |
824 | ||
96051465 TP |
825 | config LOWMEM_CAM_NUM_BOOL |
826 | bool "Set number of CAMs to use to map low memory" | |
827 | depends on ADVANCED_OPTIONS && FSL_BOOKE | |
828 | help | |
829 | This option allows you to set the maximum number of CAM slots that | |
830 | will be used to map low memory. There are a limited number of slots | |
831 | available and even more limited number that will fit in the L1 MMU. | |
832 | However, using more entries will allow mapping more low memory. This | |
833 | can be useful in optimizing the layout of kernel virtual memory. | |
834 | ||
835 | Say N here unless you know what you are doing. | |
836 | ||
837 | config LOWMEM_CAM_NUM | |
9b71dbd3 | 838 | depends on FSL_BOOKE |
96051465 TP |
839 | int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL |
840 | default 3 | |
841 | ||
0f890c8d SP |
842 | config DYNAMIC_MEMSTART |
843 | bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)" | |
23913245 | 844 | depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) |
0f890c8d SP |
845 | select NONSTATIC_KERNEL |
846 | help | |
847 | This option enables the kernel to be loaded at any page aligned | |
848 | physical address. The kernel creates a mapping from KERNELBASE to | |
849 | the address where the kernel is loaded. The page size here implies | |
850 | the TLB page size of the mapping for kernel on the particular platform. | |
851 | Please refer to the init code for finding the TLB page size. | |
852 | ||
853 | DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE | |
854 | kernel image, where the only restriction is the page aligned kernel | |
855 | load address. When this option is enabled, the compile time physical | |
856 | address CONFIG_PHYSICAL_START is ignored. | |
857 | ||
9c5f7d39 SP |
858 | This option is overridden by CONFIG_RELOCATABLE |
859 | ||
37dd2bad KG |
860 | config RELOCATABLE |
861 | bool "Build a relocatable kernel (EXPERIMENTAL)" | |
26ecb6c4 | 862 | depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x |
9c5f7d39 | 863 | select NONSTATIC_KERNEL |
37dd2bad KG |
864 | help |
865 | This builds a kernel image that is capable of running at the | |
9c5f7d39 SP |
866 | location the kernel is loaded at, without any alignment restrictions. |
867 | This feature is a superset of DYNAMIC_MEMSTART and hence overrides it. | |
37dd2bad KG |
868 | |
869 | One use is for the kexec on panic case where the recovery kernel | |
870 | must live at a different physical address than the primary | |
871 | kernel. | |
872 | ||
873 | Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address | |
874 | it has been loaded at and the compile time physical addresses | |
875 | CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START | |
876 | setting can still be useful to bootwrappers that need to know the | |
9c5f7d39 SP |
877 | load address of the kernel (eg. u-boot/mkimage). |
878 | ||
879 | config RELOCATABLE_PPC32 | |
880 | def_bool y | |
881 | depends on PPC32 && RELOCATABLE | |
37dd2bad KG |
882 | |
883 | config PAGE_OFFSET_BOOL | |
884 | bool "Set custom page offset address" | |
885 | depends on ADVANCED_OPTIONS | |
886 | help | |
887 | This option allows you to set the kernel virtual address at which | |
888 | the kernel will map low memory. This can be useful in optimizing | |
889 | the virtual memory layout of the system. | |
890 | ||
891 | Say N here unless you know what you are doing. | |
892 | ||
893 | config PAGE_OFFSET | |
894 | hex "Virtual address of memory base" if PAGE_OFFSET_BOOL | |
895 | default "0xc0000000" | |
896 | ||
14cf11af PM |
897 | config KERNEL_START_BOOL |
898 | bool "Set custom kernel base address" | |
899 | depends on ADVANCED_OPTIONS | |
900 | help | |
901 | This option allows you to set the kernel virtual address at which | |
37dd2bad KG |
902 | the kernel will be loaded. Normally this should match PAGE_OFFSET |
903 | however there are times (like kdump) that one might not want them | |
904 | to be the same. | |
14cf11af PM |
905 | |
906 | Say N here unless you know what you are doing. | |
907 | ||
908 | config KERNEL_START | |
909 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
37dd2bad | 910 | default PAGE_OFFSET if PAGE_OFFSET_BOOL |
0f890c8d | 911 | default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL |
14cf11af PM |
912 | default "0xc0000000" |
913 | ||
37dd2bad KG |
914 | config PHYSICAL_START_BOOL |
915 | bool "Set physical address where the kernel is loaded" | |
916 | depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
917 | help | |
918 | This gives the physical address where the kernel is loaded. | |
919 | ||
920 | Say N here unless you know what you are doing. | |
921 | ||
922 | config PHYSICAL_START | |
923 | hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL | |
0f890c8d | 924 | default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL |
37dd2bad KG |
925 | default "0x00000000" |
926 | ||
927 | config PHYSICAL_ALIGN | |
928 | hex | |
c8f3570b | 929 | default "0x04000000" if FSL_BOOKE |
37dd2bad KG |
930 | help |
931 | This value puts the alignment restrictions on physical address | |
932 | where kernel is loaded and run from. Kernel is compiled for an | |
933 | address which meets above alignment restriction. | |
934 | ||
14cf11af PM |
935 | config TASK_SIZE_BOOL |
936 | bool "Set custom user task size" | |
937 | depends on ADVANCED_OPTIONS | |
938 | help | |
939 | This option allows you to set the amount of virtual address space | |
940 | allocated to user tasks. This can be useful in optimizing the | |
941 | virtual memory layout of the system. | |
942 | ||
943 | Say N here unless you know what you are doing. | |
944 | ||
945 | config TASK_SIZE | |
946 | hex "Size of user task space" if TASK_SIZE_BOOL | |
4d9e5510 KG |
947 | default "0x80000000" if PPC_PREP || PPC_8xx |
948 | default "0xc0000000" | |
14cf11af | 949 | |
84532a0f BH |
950 | config CONSISTENT_SIZE_BOOL |
951 | bool "Set custom consistent memory pool size" | |
952 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
953 | help | |
954 | This option allows you to set the size of the | |
955 | consistent memory pool. This pool of virtual memory | |
956 | is used to make consistent memory allocations. | |
957 | ||
958 | config CONSISTENT_SIZE | |
959 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
960 | default "0x00200000" if NOT_COHERENT_CACHE | |
961 | ||
14cf11af PM |
962 | config PIN_TLB |
963 | bool "Pinned Kernel TLBs (860 ONLY)" | |
964 | depends on ADVANCED_OPTIONS && 8xx | |
965 | endmenu | |
966 | ||
cabb5587 | 967 | if PPC64 |
549e8152 PM |
968 | config RELOCATABLE |
969 | bool "Build a relocatable kernel" | |
0f890c8d | 970 | select NONSTATIC_KERNEL |
549e8152 PM |
971 | help |
972 | This builds a kernel image that is capable of running anywhere | |
973 | in the RMA (real memory area) at any 16k-aligned base address. | |
974 | The kernel is linked as a position-independent executable (PIE) | |
975 | and contains dynamic relocations which are processed early | |
976 | in the bootup process. | |
977 | ||
978 | One use is for the kexec on panic case where the recovery kernel | |
979 | must live at a different physical address than the primary | |
980 | kernel. | |
981 | ||
37dd2bad KG |
982 | config PAGE_OFFSET |
983 | hex | |
984 | default "0xc000000000000000" | |
cabb5587 SR |
985 | config KERNEL_START |
986 | hex | |
eeb2d218 | 987 | default "0xc000000000000000" |
37dd2bad KG |
988 | config PHYSICAL_START |
989 | hex | |
37dd2bad | 990 | default "0x00000000" |
cabb5587 SR |
991 | endif |
992 | ||
14cf11af PM |
993 | source "net/Kconfig" |
994 | ||
995 | source "drivers/Kconfig" | |
996 | ||
997 | source "fs/Kconfig" | |
998 | ||
98658538 LY |
999 | source "arch/powerpc/sysdev/qe_lib/Kconfig" |
1000 | ||
14cf11af PM |
1001 | source "lib/Kconfig" |
1002 | ||
14cf11af PM |
1003 | source "arch/powerpc/Kconfig.debug" |
1004 | ||
1005 | source "security/Kconfig" | |
1006 | ||
1007 | config KEYS_COMPAT | |
1008 | bool | |
1009 | depends on COMPAT && KEYS | |
1010 | default y | |
1011 | ||
1012 | source "crypto/Kconfig" | |
6f668280 DP |
1013 | |
1014 | config PPC_CLOCK | |
1015 | bool | |
1016 | default n | |
9483a578 | 1017 | select HAVE_CLK |
1088a209 SM |
1018 | |
1019 | config PPC_LIB_RHEAP | |
1020 | bool | |
1021 | ||
bbf45ba5 | 1022 | source "arch/powerpc/kvm/Kconfig" |