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 TG |
135 | select HAVE_GENERIC_HARDIRQS |
136 | select HAVE_SPARSE_IRQ | |
137 | select IRQ_PER_CPU | |
433c9c67 TG |
138 | select GENERIC_IRQ_SHOW |
139 | select GENERIC_IRQ_SHOW_LEVEL | |
e8d2c473 | 140 | select IRQ_FORCED_THREADING |
26723911 | 141 | select HAVE_RCU_TABLE_FREE if SMP |
02424d89 | 142 | select HAVE_SYSCALL_TRACEPOINTS |
368940d0 | 143 | select HAVE_BPF_JIT if (PPC64 && NET) |
ac5f89c7 | 144 | select HAVE_ARCH_JUMP_LABEL |
df013ffb | 145 | select ARCH_HAVE_NMI_SAFE_CMPXCHG |
14cf11af PM |
146 | |
147 | config EARLY_PRINTK | |
148 | bool | |
51d3082f | 149 | default y |
14cf11af PM |
150 | |
151 | config COMPAT | |
152 | bool | |
153 | default y if PPC64 | |
01e31dba | 154 | select COMPAT_BINFMT_ELF |
14cf11af PM |
155 | |
156 | config SYSVIPC_COMPAT | |
157 | bool | |
158 | depends on COMPAT && SYSVIPC | |
159 | default y | |
160 | ||
161 | # All PPC32s use generic nvram driver through ppc_md | |
162 | config GENERIC_NVRAM | |
163 | bool | |
164 | default y if PPC32 | |
165 | ||
ae1e9130 | 166 | config SCHED_OMIT_FRAME_POINTER |
14cf11af PM |
167 | bool |
168 | default y | |
169 | ||
170 | config ARCH_MAY_HAVE_PC_FDC | |
171 | bool | |
bed59275 | 172 | default !PPC_PSERIES || PCI |
14cf11af | 173 | |
08264cbc KG |
174 | config PPC_OF |
175 | def_bool y | |
176 | ||
177 | config PPC_UDBG_16550 | |
178 | bool | |
179 | default n | |
180 | ||
08264cbc KG |
181 | config GENERIC_TBSYNC |
182 | bool | |
183 | default y if PPC32 && SMP | |
184 | default n | |
185 | ||
e65e1fc2 AV |
186 | config AUDIT_ARCH |
187 | bool | |
188 | default y | |
189 | ||
73c9ceab JF |
190 | config GENERIC_BUG |
191 | bool | |
192 | default y | |
193 | depends on BUG | |
194 | ||
b3028878 | 195 | config SYS_SUPPORTS_APM_EMULATION |
58da10bb | 196 | default y if PMAC_APM_EMU |
b3028878 JB |
197 | bool |
198 | ||
6c5b59b9 DG |
199 | config EPAPR_BOOT |
200 | bool | |
201 | help | |
202 | Used to allow a board to specify it wants an ePAPR compliant wrapper. | |
203 | default n | |
204 | ||
f4fc4a5b KG |
205 | config DEFAULT_UIMAGE |
206 | bool | |
207 | help | |
208 | Used to allow a board to specify it wants a uImage built by default | |
209 | default n | |
210 | ||
b09c1644 SW |
211 | config REDBOOT |
212 | bool | |
213 | ||
801e4062 JB |
214 | config ARCH_HIBERNATION_POSSIBLE |
215 | bool | |
543b9fd3 JB |
216 | default y |
217 | ||
f4cb5700 JB |
218 | config ARCH_SUSPEND_POSSIBLE |
219 | def_bool y | |
4ffd6952 | 220 | depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ |
e5462d16 | 221 | (PPC_85xx && !SMP) || PPC_86xx || PPC_PSERIES || 44x || 40x |
f4cb5700 | 222 | |
4c75a6f4 BH |
223 | config PPC_DCR_NATIVE |
224 | bool | |
225 | default n | |
226 | ||
227 | config PPC_DCR_MMIO | |
228 | bool | |
229 | default n | |
230 | ||
231 | config PPC_DCR | |
232 | bool | |
233 | depends on PPC_DCR_NATIVE || PPC_DCR_MMIO | |
234 | default y | |
235 | ||
4c9d2800 BH |
236 | config PPC_OF_PLATFORM_PCI |
237 | bool | |
373a6da1 | 238 | depends on PCI |
4c9d2800 BH |
239 | depends on PPC64 # not supported on 32 bits yet |
240 | default n | |
241 | ||
6a11f75b AM |
242 | config ARCH_SUPPORTS_DEBUG_PAGEALLOC |
243 | def_bool y | |
244 | ||
172ae2e7 DK |
245 | config PPC_ADV_DEBUG_REGS |
246 | bool | |
247 | depends on 40x || BOOKE | |
248 | default y | |
249 | ||
250 | config PPC_ADV_DEBUG_IACS | |
251 | int | |
252 | depends on PPC_ADV_DEBUG_REGS | |
253 | default 4 if 44x | |
254 | default 2 | |
255 | ||
256 | config PPC_ADV_DEBUG_DACS | |
257 | int | |
258 | depends on PPC_ADV_DEBUG_REGS | |
259 | default 2 | |
260 | ||
261 | config PPC_ADV_DEBUG_DVCS | |
262 | int | |
263 | depends on PPC_ADV_DEBUG_REGS | |
264 | default 2 if 44x | |
265 | default 0 | |
266 | ||
267 | config PPC_ADV_DEBUG_DAC_RANGE | |
268 | bool | |
269 | depends on PPC_ADV_DEBUG_REGS && 44x | |
270 | default y | |
271 | ||
14cf11af PM |
272 | source "init/Kconfig" |
273 | ||
dc52ddc0 MH |
274 | source "kernel/Kconfig.freezer" |
275 | ||
a2d2e1ec | 276 | source "arch/powerpc/sysdev/Kconfig" |
4330f5da | 277 | source "arch/powerpc/platforms/Kconfig" |
14cf11af | 278 | |
14cf11af PM |
279 | menu "Kernel options" |
280 | ||
281 | config HIGHMEM | |
282 | bool "High memory support" | |
283 | depends on PPC32 | |
284 | ||
1ad74998 | 285 | source kernel/time/Kconfig |
14cf11af PM |
286 | source kernel/Kconfig.hz |
287 | source kernel/Kconfig.preempt | |
288 | source "fs/Kconfig.binfmt" | |
289 | ||
ba72cb8c MG |
290 | config HUGETLB_PAGE_SIZE_VARIABLE |
291 | bool | |
292 | depends on HUGETLB_PAGE | |
293 | default y | |
294 | ||
14cf11af PM |
295 | config MATH_EMULATION |
296 | bool "Math emulation" | |
4d52719a | 297 | depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 |
14cf11af PM |
298 | ---help--- |
299 | Some PowerPC chips designed for embedded applications do not have | |
300 | a floating-point unit and therefore do not implement the | |
301 | floating-point instructions in the PowerPC instruction set. If you | |
302 | say Y here, the kernel will include code to emulate a floating-point | |
303 | unit, which will allow programs that use floating-point | |
304 | instructions to run. | |
305 | ||
5dd57a13 SW |
306 | config 8XX_MINIMAL_FPEMU |
307 | bool "Minimal math emulation for 8xx" | |
308 | depends on 8xx && !MATH_EMULATION | |
309 | help | |
310 | Older arch/ppc kernels still emulated a few floating point | |
311 | instructions such as load and store, even when full math | |
312 | emulation is disabled. Say "Y" here if you want to preserve | |
313 | this behavior. | |
314 | ||
315 | It is recommended that you build a soft-float userspace instead. | |
316 | ||
fb3475e9 FT |
317 | config IOMMU_HELPER |
318 | def_bool PPC64 | |
319 | ||
ec3cf2ec BB |
320 | config SWIOTLB |
321 | bool "SWIOTLB support" | |
322 | default n | |
323 | select IOMMU_HELPER | |
324 | ---help--- | |
325 | Support for IO bounce buffering for systems without an IOMMU. | |
326 | This allows us to DMA to the full physical address space on | |
327 | platforms where the size of a physical address is larger | |
328 | than the bus address. Not all platforms support this. | |
329 | ||
14cf11af PM |
330 | config HOTPLUG_CPU |
331 | bool "Support for enabling/disabling CPUs" | |
344eb010 | 332 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV) |
14cf11af PM |
333 | ---help--- |
334 | Say Y here to be able to disable and re-enable individual | |
335 | CPUs at runtime on SMP machines. | |
336 | ||
337 | Say N if you are unsure. | |
338 | ||
12633e80 NF |
339 | config ARCH_CPU_PROBE_RELEASE |
340 | def_bool y | |
341 | depends on HOTPLUG_CPU | |
342 | ||
cc57637b YG |
343 | config ARCH_ENABLE_MEMORY_HOTPLUG |
344 | def_bool y | |
345 | ||
a99824f3 BP |
346 | config ARCH_HAS_WALK_MEMORY |
347 | def_bool y | |
348 | ||
1482471d BP |
349 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
350 | def_bool y | |
351 | ||
14cf11af PM |
352 | config KEXEC |
353 | bool "kexec system call (EXPERIMENTAL)" | |
bbc24a25 | 354 | depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP && !PPC_47x)) && EXPERIMENTAL |
14cf11af PM |
355 | help |
356 | kexec is a system call that implements the ability to shutdown your | |
357 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 358 | but it is independent of the system firmware. And like a reboot |
14cf11af PM |
359 | you can start any kernel with it, not just Linux. |
360 | ||
1f1332f7 | 361 | The name comes from the similarity to the exec system call. |
14cf11af PM |
362 | |
363 | It is an ongoing process to be certain the hardware in a machine | |
364 | is properly shutdown, so do not be surprised if this code does not | |
365 | initially work for you. It may help to enable device hotplugging | |
366 | support. As of this writing the exact hardware interface is | |
367 | strongly in flux, so no good recommendation can be made. | |
368 | ||
e8625d46 | 369 | config CRASH_DUMP |
3420b5da | 370 | bool "Build a kdump crash kernel" |
5b2e478d SP |
371 | depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP && !PPC_47x) |
372 | select RELOCATABLE if PPC64 || 44x | |
0f890c8d | 373 | select DYNAMIC_MEMSTART if FSL_BOOKE |
e8625d46 HM |
374 | help |
375 | Build a kernel suitable for use as a kdump capture kernel. | |
54622f10 MK |
376 | The same kernel binary can be used as production kernel and dump |
377 | capture kernel. | |
e8625d46 | 378 | |
eb39c880 MS |
379 | config FA_DUMP |
380 | bool "Firmware-assisted dump" | |
381 | depends on PPC64 && PPC_RTAS && CRASH_DUMP | |
382 | help | |
383 | A robust mechanism to get reliable kernel crash dump with | |
384 | assistance from firmware. This approach does not use kexec, | |
385 | instead firmware assists in booting the kdump kernel | |
386 | while preserving memory contents. Firmware-assisted dump | |
387 | is meant to be a kdump replacement offering robustness and | |
388 | speed not possible without system firmware assistance. | |
389 | ||
390 | If unsure, say "N" | |
391 | ||
14cf11af PM |
392 | config IRQ_ALL_CPUS |
393 | bool "Distribute interrupts on all CPUs by default" | |
394 | depends on SMP && !MV64360 | |
395 | help | |
396 | This option gives the kernel permission to distribute IRQs across | |
397 | multiple CPUs. Saying N here will route all IRQs to the first | |
398 | CPU. Generally saying Y is safe, although some problems have been | |
399 | reported with SMP Power Macintoshes with this option enabled. | |
400 | ||
ffa27b6b AW |
401 | config NUMA |
402 | bool "NUMA support" | |
403 | depends on PPC64 | |
404 | default y if SMP && PPC_PSERIES | |
405 | ||
c80d79d7 YG |
406 | config NODES_SHIFT |
407 | int | |
ea55bf29 | 408 | default "8" if PPC64 |
c80d79d7 YG |
409 | default "4" |
410 | depends on NEED_MULTIPLE_NODES | |
411 | ||
ea55bf29 AB |
412 | config MAX_ACTIVE_REGIONS |
413 | int | |
414 | default "256" if PPC64 | |
415 | default "32" | |
416 | ||
14cf11af PM |
417 | config ARCH_SELECT_MEMORY_MODEL |
418 | def_bool y | |
419 | depends on PPC64 | |
420 | ||
421 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
422 | def_bool y |
423 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 424 | |
45fb6cea | 425 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 426 | def_bool y |
9100b205 | 427 | depends on PPC64 |
d29eff7b | 428 | select SPARSEMEM_VMEMMAP_ENABLE |
14cf11af | 429 | |
45fb6cea | 430 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 431 | def_bool y |
78bde53e | 432 | depends on (SMP && PPC_PSERIES) || PPC_PS3 |
14cf11af | 433 | |
5a1eb5c4 | 434 | config SYS_SUPPORTS_HUGETLBFS |
41151e77 | 435 | bool |
5a1eb5c4 | 436 | |
c67c3cb4 | 437 | source "mm/Kconfig" |
14cf11af | 438 | |
7e9191da MK |
439 | config ARCH_MEMORY_PROBE |
440 | def_bool y | |
441 | depends on MEMORY_HOTPLUG | |
442 | ||
75167957 AW |
443 | # Some NUMA nodes have memory ranges that span |
444 | # other nodes. Even though a pfn is valid and | |
445 | # between a node's start and end pfns, it may not | |
446 | # reside on that node. See memmap_init_zone() | |
447 | # for details. | |
448 | config NODES_SPAN_OTHER_NODES | |
449 | def_bool y | |
450 | depends on NEED_MULTIPLE_NODES | |
451 | ||
16c2d476 BH |
452 | config PPC_HAS_HASH_64K |
453 | bool | |
454 | depends on PPC64 | |
455 | default n | |
456 | ||
e1240122 YT |
457 | config STDBINUTILS |
458 | bool "Using standard binutils settings" | |
459 | depends on 44x | |
460 | default y | |
461 | help | |
462 | Turning this option off allows you to select 256KB PAGE_SIZE on 44x. | |
463 | Note, that kernel will be able to run only those applications, | |
464 | which had been compiled using binutils later than 2.17.50.0.3 with | |
465 | '-zmax-page-size' set to 256K (the default is 64K). Or, if using | |
466 | the older binutils, you can patch them with a trivial patch, which | |
467 | changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. | |
468 | ||
ca9153a3 IY |
469 | choice |
470 | prompt "Page size" | |
471 | default PPC_4K_PAGES | |
3c726f8d | 472 | help |
ca9153a3 IY |
473 | Select the kernel logical page size. Increasing the page size |
474 | will reduce software overhead at each page boundary, allow | |
475 | hardware prefetch mechanisms to be more effective, and allow | |
476 | larger dma transfers increasing IO efficiency and reducing | |
477 | overhead. However the utilization of memory will increase. | |
478 | For example, each cached file will using a multiple of the | |
479 | page size to hold its contents and the difference between the | |
480 | end of file and the end of page is wasted. | |
481 | ||
482 | Some dedicated systems, such as software raid serving with | |
483 | accelerated calculations, have shown significant increases. | |
484 | ||
485 | If you configure a 64 bit kernel for 64k pages but the | |
486 | processor does not support them, then the kernel will simulate | |
487 | them with 4k pages, loading them on demand, but with the | |
488 | reduced software overhead and larger internal fragmentation. | |
489 | For the 32 bit kernel, a large page option will not be offered | |
490 | unless it is supported by the configured processor. | |
491 | ||
492 | If unsure, choose 4K_PAGES. | |
493 | ||
494 | config PPC_4K_PAGES | |
495 | bool "4k page size" | |
496 | ||
497 | config PPC_16K_PAGES | |
498 | bool "16k page size" if 44x | |
499 | ||
500 | config PPC_64K_PAGES | |
2d27cfd3 | 501 | bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 |
ca9153a3 IY |
502 | select PPC_HAS_HASH_64K if PPC_STD_MMU_64 |
503 | ||
e1240122 YT |
504 | config PPC_256K_PAGES |
505 | bool "256k page size" if 44x | |
adf213c4 | 506 | depends on !STDBINUTILS |
e1240122 YT |
507 | help |
508 | Make the page size 256k. | |
509 | ||
510 | As the ELF standard only requires alignment to support page | |
511 | sizes up to 64k, you will need to compile all of your user | |
512 | space applications with a non-standard binutils settings | |
513 | (see the STDBINUTILS description for details). | |
514 | ||
515 | Say N unless you know what you are doing. | |
516 | ||
ca9153a3 | 517 | endchoice |
3c726f8d | 518 | |
53bcddb9 SR |
519 | config FORCE_MAX_ZONEORDER |
520 | int "Maximum zone order" | |
066c4b87 BH |
521 | range 9 64 if PPC64 && PPC_64K_PAGES |
522 | default "9" if PPC64 && PPC_64K_PAGES | |
523 | range 13 64 if PPC64 && !PPC_64K_PAGES | |
524 | default "13" if PPC64 && !PPC_64K_PAGES | |
525 | range 9 64 if PPC32 && PPC_16K_PAGES | |
526 | default "9" if PPC32 && PPC_16K_PAGES | |
527 | range 7 64 if PPC32 && PPC_64K_PAGES | |
528 | default "7" if PPC32 && PPC_64K_PAGES | |
529 | range 5 64 if PPC32 && PPC_256K_PAGES | |
530 | default "5" if PPC32 && PPC_256K_PAGES | |
ebe40c5c | 531 | range 11 64 |
53bcddb9 SR |
532 | default "11" |
533 | help | |
534 | The kernel memory allocator divides physically contiguous memory | |
535 | blocks into "zones", where each zone is a power of two number of | |
536 | pages. This option selects the largest power of two that the kernel | |
537 | keeps in the memory allocator. If you need to allocate very large | |
538 | blocks of physically contiguous memory, then you may need to | |
539 | increase this value. | |
540 | ||
541 | This config option is actually maximum order plus one. For example, | |
542 | a value of 11 means that the largest free memory block is 2^10 pages. | |
543 | ||
544 | The page size is not necessarily 4KB. For example, on 64-bit | |
545 | systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep | |
546 | this in mind when choosing a value for this option. | |
547 | ||
fa28237c PM |
548 | config PPC_SUBPAGE_PROT |
549 | bool "Support setting protections for 4k subpages" | |
ca9153a3 | 550 | depends on PPC_STD_MMU_64 && PPC_64K_PAGES |
fa28237c PM |
551 | help |
552 | This option adds support for a system call to allow user programs | |
553 | to set access permissions (read/write, readonly, or no access) | |
554 | on the 4k subpages of each 64k page. | |
555 | ||
14cf11af PM |
556 | config SCHED_SMT |
557 | bool "SMT (Hyperthreading) scheduler support" | |
558 | depends on PPC64 && SMP | |
14cf11af PM |
559 | help |
560 | SMT scheduler support improves the CPU scheduler's decision making | |
561 | when dealing with POWER5 cpus at a cost of slightly increased | |
562 | overhead in some places. If unsure say N here. | |
563 | ||
14cf11af PM |
564 | config CMDLINE_BOOL |
565 | bool "Default bootloader kernel arguments" | |
14cf11af PM |
566 | |
567 | config CMDLINE | |
568 | string "Initial kernel command string" | |
569 | depends on CMDLINE_BOOL | |
570 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
571 | help | |
572 | On some platforms, there is currently no way for the boot loader to | |
573 | pass arguments to the kernel. For these platforms, you can supply | |
574 | some command-line options at build time by entering them here. In | |
575 | most cases you will need to specify the root device here. | |
576 | ||
c356aa45 GL |
577 | config EXTRA_TARGETS |
578 | string "Additional default image types" | |
579 | help | |
580 | List additional targets to be built by the bootwrapper here (separated | |
581 | by spaces). This is useful for targets that depend of device tree | |
582 | files in the .dts directory. | |
583 | ||
584 | Targets in this list will be build as part of the default build | |
585 | target, or when the user does a 'make zImage' or a | |
586 | 'make zImage.initrd'. | |
587 | ||
588 | If unsure, leave blank | |
589 | ||
b28f5081 JB |
590 | config ARCH_WANTS_FREEZER_CONTROL |
591 | def_bool y | |
592 | depends on ADB_PMU | |
593 | ||
14cf11af | 594 | source kernel/power/Kconfig |
14cf11af PM |
595 | |
596 | config SECCOMP | |
597 | bool "Enable seccomp to safely compute untrusted bytecode" | |
598 | depends on PROC_FS | |
599 | default y | |
600 | help | |
601 | This kernel feature is useful for number crunching applications | |
602 | that may need to compute untrusted bytecode during their | |
603 | execution. By using pipes or other transports made available to | |
604 | the process as file descriptors supporting the read/write | |
605 | syscalls, it's possible to isolate those applications in | |
606 | their own address space using seccomp. Once seccomp is | |
607 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
608 | and the task is only allowed to execute a few safe syscalls | |
609 | defined by each seccomp mode. | |
610 | ||
611 | If unsure, say Y. Only embedded should say N here. | |
612 | ||
613 | endmenu | |
614 | ||
615 | config ISA_DMA_API | |
616 | bool | |
373a6da1 | 617 | default !PPC_ISERIES || PCI |
14cf11af PM |
618 | |
619 | menu "Bus options" | |
620 | ||
621 | config ISA | |
622 | bool "Support for ISA-bus hardware" | |
623 | depends on PPC_PREP || PPC_CHRP | |
f9bd170a | 624 | select PPC_I8259 |
14cf11af PM |
625 | help |
626 | Find out whether you have ISA slots on your motherboard. ISA is the | |
627 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
628 | inside your box. If you have an Apple machine, say N here; if you | |
629 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If | |
630 | you have an embedded board, consult your board documentation. | |
631 | ||
5ac6da66 CL |
632 | config ZONE_DMA |
633 | bool | |
634 | default y | |
635 | ||
af407c6d FT |
636 | config NEED_DMA_MAP_STATE |
637 | def_bool (PPC64 || NOT_COHERENT_CACHE) | |
638 | ||
e32205eb FT |
639 | config NEED_SG_DMA_LENGTH |
640 | def_bool y | |
641 | ||
14cf11af PM |
642 | config GENERIC_ISA_DMA |
643 | bool | |
1927445a | 644 | depends on ISA_DMA_API |
14cf11af PM |
645 | default y |
646 | ||
25635c71 PM |
647 | config PPC_INDIRECT_PCI |
648 | bool | |
649 | depends on PCI | |
63dafe57 | 650 | default y if 40x || 44x |
25635c71 PM |
651 | default n |
652 | ||
14cf11af PM |
653 | config EISA |
654 | bool | |
655 | ||
656 | config SBUS | |
657 | bool | |
658 | ||
08264cbc KG |
659 | config FSL_SOC |
660 | bool | |
b489da87 | 661 | select HAVE_CAN_FLEXCAN if NET && CAN |
662 | select PPC_CLOCK if CAN_FLEXCAN | |
08264cbc | 663 | |
55c44991 RZ |
664 | config FSL_PCI |
665 | bool | |
666 | select PPC_INDIRECT_PCI | |
d0839118 | 667 | select PCI_QUIRKS |
55c44991 | 668 | |
4ffd6952 AV |
669 | config FSL_PMC |
670 | bool | |
671 | default y | |
672 | depends on SUSPEND && (PPC_85xx || PPC_86xx) | |
673 | help | |
674 | Freescale MPC85xx/MPC86xx power management controller support | |
675 | (suspend/resume). For MPC83xx see platforms/83xx/suspend.c | |
676 | ||
d164f6d4 VG |
677 | config PPC4xx_CPM |
678 | bool | |
679 | default y | |
680 | depends on SUSPEND && (44x || 40x) | |
681 | help | |
682 | PPC4xx Clock Power Management (CPM) support (suspend/resume). | |
683 | It also enables support for two different idle states (idle-wait | |
684 | and idle-doze). | |
685 | ||
2a706919 SR |
686 | config 4xx_SOC |
687 | bool | |
688 | ||
acaa7aa3 | 689 | config FSL_LBC |
3ab8f2a2 RZ |
690 | bool "Freescale Local Bus support" |
691 | depends on FSL_SOC | |
acaa7aa3 | 692 | help |
3ab8f2a2 RZ |
693 | Enables reporting of errors from the Freescale local bus |
694 | controller. Also contains some common code used by | |
695 | drivers for specific local bus peripherals. | |
acaa7aa3 | 696 | |
a20cbdef PK |
697 | config FSL_IFC |
698 | bool | |
699 | depends on FSL_SOC | |
700 | ||
83ff9dcf AV |
701 | config FSL_GTM |
702 | bool | |
703 | depends on PPC_83xx || QUICC_ENGINE || CPM2 | |
704 | help | |
705 | Freescale General-purpose Timers support | |
706 | ||
14cf11af PM |
707 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
708 | config MCA | |
709 | bool | |
710 | ||
b500563b JR |
711 | # Platforms that what PCI turned unconditionally just do select PCI |
712 | # in their config node. Platforms that want to choose at config | |
713 | # time should select PPC_PCI_CHOICE | |
714 | config PPC_PCI_CHOICE | |
715 | bool | |
716 | ||
14cf11af | 717 | config PCI |
b500563b JR |
718 | bool "PCI support" if PPC_PCI_CHOICE |
719 | default y if !40x && !CPM2 && !8xx && !PPC_83xx \ | |
bcc48591 | 720 | && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON |
f21f49ea | 721 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx |
14cf11af | 722 | default PCI_QSPAN if !4xx && !CPM2 && 8xx |
df87ef55 | 723 | select ARCH_SUPPORTS_MSI |
335b8cf7 | 724 | select GENERIC_PCI_IOMAP |
14cf11af PM |
725 | help |
726 | Find out whether your system includes a PCI bus. PCI is the name of | |
727 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
728 | your box. If you say Y here, the kernel will include drivers and | |
729 | infrastructure code to support PCI bus devices. | |
730 | ||
731 | config PCI_DOMAINS | |
36e23590 MW |
732 | def_bool PCI |
733 | ||
734 | config PCI_SYSCALL | |
735 | def_bool PCI | |
14cf11af | 736 | |
14cf11af PM |
737 | config PCI_QSPAN |
738 | bool "QSpan PCI" | |
739 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 740 | select PPC_I8259 |
14cf11af PM |
741 | help |
742 | Say Y here if you have a system based on a Motorola 8xx-series | |
743 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
744 | ||
745 | config PCI_8260 | |
746 | bool | |
747 | depends on PCI && 8260 | |
25635c71 | 748 | select PPC_INDIRECT_PCI |
14cf11af PM |
749 | default y |
750 | ||
751 | config 8260_PCI9 | |
4a3ecc62 | 752 | bool "Enable workaround for MPC826x erratum PCI 9" |
e00c5498 | 753 | depends on PCI_8260 && !8272 |
14cf11af PM |
754 | default y |
755 | ||
bb53bb3d JM |
756 | source "drivers/pci/pcie/Kconfig" |
757 | ||
14cf11af PM |
758 | source "drivers/pci/Kconfig" |
759 | ||
760 | source "drivers/pcmcia/Kconfig" | |
761 | ||
762 | source "drivers/pci/hotplug/Kconfig" | |
763 | ||
f1f389d5 ZW |
764 | config HAS_RAPIDIO |
765 | bool | |
766 | default n | |
767 | ||
768 | config RAPIDIO | |
769 | bool "RapidIO support" | |
388b78ad | 770 | depends on HAS_RAPIDIO || PCI |
f1f389d5 ZW |
771 | help |
772 | If you say Y here, the kernel will include drivers and | |
773 | infrastructure code to support RapidIO interconnect devices. | |
774 | ||
388b78ad AB |
775 | config FSL_RIO |
776 | bool "Freescale Embedded SRIO Controller support" | |
777 | depends on RAPIDIO && HAS_RAPIDIO | |
778 | default "n" | |
779 | ---help--- | |
780 | Include support for RapidIO controller on Freescale embedded | |
781 | processors (MPC8548, MPC8641, etc). | |
782 | ||
f1f389d5 ZW |
783 | source "drivers/rapidio/Kconfig" |
784 | ||
14cf11af PM |
785 | endmenu |
786 | ||
0f890c8d SP |
787 | config NONSTATIC_KERNEL |
788 | bool | |
789 | default n | |
790 | ||
14cf11af PM |
791 | menu "Advanced setup" |
792 | depends on PPC32 | |
793 | ||
794 | config ADVANCED_OPTIONS | |
795 | bool "Prompt for advanced kernel configuration options" | |
796 | help | |
797 | This option will enable prompting for a variety of advanced kernel | |
798 | configuration options. These options can cause the kernel to not | |
799 | work if they are set incorrectly, but can be used to optimize certain | |
800 | aspects of kernel memory management. | |
801 | ||
802 | Unless you know what you are doing, say N here. | |
803 | ||
804 | comment "Default settings for advanced configuration options are used" | |
805 | depends on !ADVANCED_OPTIONS | |
806 | ||
14cf11af PM |
807 | config LOWMEM_SIZE_BOOL |
808 | bool "Set maximum low memory" | |
809 | depends on ADVANCED_OPTIONS | |
810 | help | |
811 | This option allows you to set the maximum amount of memory which | |
812 | will be used as "low memory", that is, memory which the kernel can | |
813 | access directly, without having to set up a kernel virtual mapping. | |
814 | This can be useful in optimizing the layout of kernel virtual | |
815 | memory. | |
816 | ||
817 | Say N here unless you know what you are doing. | |
818 | ||
819 | config LOWMEM_SIZE | |
820 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
821 | default "0x30000000" | |
822 | ||
96051465 TP |
823 | config LOWMEM_CAM_NUM_BOOL |
824 | bool "Set number of CAMs to use to map low memory" | |
825 | depends on ADVANCED_OPTIONS && FSL_BOOKE | |
826 | help | |
827 | This option allows you to set the maximum number of CAM slots that | |
828 | will be used to map low memory. There are a limited number of slots | |
829 | available and even more limited number that will fit in the L1 MMU. | |
830 | However, using more entries will allow mapping more low memory. This | |
831 | can be useful in optimizing the layout of kernel virtual memory. | |
832 | ||
833 | Say N here unless you know what you are doing. | |
834 | ||
835 | config LOWMEM_CAM_NUM | |
9b71dbd3 | 836 | depends on FSL_BOOKE |
96051465 TP |
837 | int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL |
838 | default 3 | |
839 | ||
0f890c8d SP |
840 | config DYNAMIC_MEMSTART |
841 | bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)" | |
23913245 | 842 | depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) |
0f890c8d SP |
843 | select NONSTATIC_KERNEL |
844 | help | |
845 | This option enables the kernel to be loaded at any page aligned | |
846 | physical address. The kernel creates a mapping from KERNELBASE to | |
847 | the address where the kernel is loaded. The page size here implies | |
848 | the TLB page size of the mapping for kernel on the particular platform. | |
849 | Please refer to the init code for finding the TLB page size. | |
850 | ||
851 | DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE | |
852 | kernel image, where the only restriction is the page aligned kernel | |
853 | load address. When this option is enabled, the compile time physical | |
854 | address CONFIG_PHYSICAL_START is ignored. | |
855 | ||
9c5f7d39 SP |
856 | This option is overridden by CONFIG_RELOCATABLE |
857 | ||
37dd2bad KG |
858 | config RELOCATABLE |
859 | bool "Build a relocatable kernel (EXPERIMENTAL)" | |
26ecb6c4 | 860 | depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x |
9c5f7d39 | 861 | select NONSTATIC_KERNEL |
37dd2bad KG |
862 | help |
863 | This builds a kernel image that is capable of running at the | |
9c5f7d39 SP |
864 | location the kernel is loaded at, without any alignment restrictions. |
865 | This feature is a superset of DYNAMIC_MEMSTART and hence overrides it. | |
37dd2bad KG |
866 | |
867 | One use is for the kexec on panic case where the recovery kernel | |
868 | must live at a different physical address than the primary | |
869 | kernel. | |
870 | ||
871 | Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address | |
872 | it has been loaded at and the compile time physical addresses | |
873 | CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START | |
874 | setting can still be useful to bootwrappers that need to know the | |
9c5f7d39 SP |
875 | load address of the kernel (eg. u-boot/mkimage). |
876 | ||
877 | config RELOCATABLE_PPC32 | |
878 | def_bool y | |
879 | depends on PPC32 && RELOCATABLE | |
37dd2bad KG |
880 | |
881 | config PAGE_OFFSET_BOOL | |
882 | bool "Set custom page offset address" | |
883 | depends on ADVANCED_OPTIONS | |
884 | help | |
885 | This option allows you to set the kernel virtual address at which | |
886 | the kernel will map low memory. This can be useful in optimizing | |
887 | the virtual memory layout of the system. | |
888 | ||
889 | Say N here unless you know what you are doing. | |
890 | ||
891 | config PAGE_OFFSET | |
892 | hex "Virtual address of memory base" if PAGE_OFFSET_BOOL | |
893 | default "0xc0000000" | |
894 | ||
14cf11af PM |
895 | config KERNEL_START_BOOL |
896 | bool "Set custom kernel base address" | |
897 | depends on ADVANCED_OPTIONS | |
898 | help | |
899 | This option allows you to set the kernel virtual address at which | |
37dd2bad KG |
900 | the kernel will be loaded. Normally this should match PAGE_OFFSET |
901 | however there are times (like kdump) that one might not want them | |
902 | to be the same. | |
14cf11af PM |
903 | |
904 | Say N here unless you know what you are doing. | |
905 | ||
906 | config KERNEL_START | |
907 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
37dd2bad | 908 | default PAGE_OFFSET if PAGE_OFFSET_BOOL |
0f890c8d | 909 | default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL |
14cf11af PM |
910 | default "0xc0000000" |
911 | ||
37dd2bad KG |
912 | config PHYSICAL_START_BOOL |
913 | bool "Set physical address where the kernel is loaded" | |
914 | depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
915 | help | |
916 | This gives the physical address where the kernel is loaded. | |
917 | ||
918 | Say N here unless you know what you are doing. | |
919 | ||
920 | config PHYSICAL_START | |
921 | hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL | |
0f890c8d | 922 | default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL |
37dd2bad KG |
923 | default "0x00000000" |
924 | ||
925 | config PHYSICAL_ALIGN | |
926 | hex | |
c8f3570b | 927 | default "0x04000000" if FSL_BOOKE |
37dd2bad KG |
928 | help |
929 | This value puts the alignment restrictions on physical address | |
930 | where kernel is loaded and run from. Kernel is compiled for an | |
931 | address which meets above alignment restriction. | |
932 | ||
14cf11af PM |
933 | config TASK_SIZE_BOOL |
934 | bool "Set custom user task size" | |
935 | depends on ADVANCED_OPTIONS | |
936 | help | |
937 | This option allows you to set the amount of virtual address space | |
938 | allocated to user tasks. This can be useful in optimizing the | |
939 | virtual memory layout of the system. | |
940 | ||
941 | Say N here unless you know what you are doing. | |
942 | ||
943 | config TASK_SIZE | |
944 | hex "Size of user task space" if TASK_SIZE_BOOL | |
4d9e5510 KG |
945 | default "0x80000000" if PPC_PREP || PPC_8xx |
946 | default "0xc0000000" | |
14cf11af | 947 | |
84532a0f BH |
948 | config CONSISTENT_SIZE_BOOL |
949 | bool "Set custom consistent memory pool size" | |
950 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
951 | help | |
952 | This option allows you to set the size of the | |
953 | consistent memory pool. This pool of virtual memory | |
954 | is used to make consistent memory allocations. | |
955 | ||
956 | config CONSISTENT_SIZE | |
957 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
958 | default "0x00200000" if NOT_COHERENT_CACHE | |
959 | ||
14cf11af PM |
960 | config PIN_TLB |
961 | bool "Pinned Kernel TLBs (860 ONLY)" | |
962 | depends on ADVANCED_OPTIONS && 8xx | |
963 | endmenu | |
964 | ||
cabb5587 | 965 | if PPC64 |
549e8152 PM |
966 | config RELOCATABLE |
967 | bool "Build a relocatable kernel" | |
0f890c8d | 968 | select NONSTATIC_KERNEL |
549e8152 PM |
969 | help |
970 | This builds a kernel image that is capable of running anywhere | |
971 | in the RMA (real memory area) at any 16k-aligned base address. | |
972 | The kernel is linked as a position-independent executable (PIE) | |
973 | and contains dynamic relocations which are processed early | |
974 | in the bootup process. | |
975 | ||
976 | One use is for the kexec on panic case where the recovery kernel | |
977 | must live at a different physical address than the primary | |
978 | kernel. | |
979 | ||
37dd2bad KG |
980 | config PAGE_OFFSET |
981 | hex | |
982 | default "0xc000000000000000" | |
cabb5587 SR |
983 | config KERNEL_START |
984 | hex | |
eeb2d218 | 985 | default "0xc000000000000000" |
37dd2bad KG |
986 | config PHYSICAL_START |
987 | hex | |
37dd2bad | 988 | default "0x00000000" |
cabb5587 SR |
989 | endif |
990 | ||
14cf11af PM |
991 | source "net/Kconfig" |
992 | ||
993 | source "drivers/Kconfig" | |
994 | ||
995 | source "fs/Kconfig" | |
996 | ||
98658538 LY |
997 | source "arch/powerpc/sysdev/qe_lib/Kconfig" |
998 | ||
14cf11af PM |
999 | source "lib/Kconfig" |
1000 | ||
14cf11af PM |
1001 | source "arch/powerpc/Kconfig.debug" |
1002 | ||
1003 | source "security/Kconfig" | |
1004 | ||
1005 | config KEYS_COMPAT | |
1006 | bool | |
1007 | depends on COMPAT && KEYS | |
1008 | default y | |
1009 | ||
1010 | source "crypto/Kconfig" | |
6f668280 DP |
1011 | |
1012 | config PPC_CLOCK | |
1013 | bool | |
1014 | default n | |
9483a578 | 1015 | select HAVE_CLK |
1088a209 SM |
1016 | |
1017 | config PPC_LIB_RHEAP | |
1018 | bool | |
1019 | ||
bbf45ba5 | 1020 | source "arch/powerpc/kvm/Kconfig" |