Commit | Line | Data |
---|---|---|
a0ae9c7c | 1 | source "arch/powerpc/platforms/Kconfig.cputype" |
17e638bc | 2 | |
14cf11af PM |
3 | config PPC32 |
4 | bool | |
5 | default y if !PPC64 | |
6 | ||
234a71a7 | 7 | config 32BIT |
8 | bool | |
9 | default y if PPC32 | |
10 | ||
14cf11af PM |
11 | config 64BIT |
12 | bool | |
13 | default y if PPC64 | |
14 | ||
2578bfae SR |
15 | config WORD_SIZE |
16 | int | |
17 | default 64 if PPC64 | |
18 | default 32 if !PPC64 | |
19 | ||
600715dc JF |
20 | config ARCH_PHYS_ADDR_T_64BIT |
21 | def_bool PPC64 || PHYS_64BIT | |
22 | ||
787d44ca FT |
23 | config ARCH_DMA_ADDR_T_64BIT |
24 | def_bool ARCH_PHYS_ADDR_T_64BIT | |
25 | ||
14cf11af PM |
26 | config MMU |
27 | bool | |
28 | default y | |
29 | ||
c2a7e818 | 30 | config HAVE_SETUP_PER_CPU_AREA |
e74e3962 TH |
31 | def_bool PPC64 |
32 | ||
c2a7e818 | 33 | config NEED_PER_CPU_EMBED_FIRST_CHUNK |
b32ef636 | 34 | def_bool PPC64 |
35 | ||
551b81f2 ME |
36 | config NR_IRQS |
37 | int "Number of virtual interrupt numbers" | |
859aefc5 | 38 | range 32 32768 |
551b81f2 ME |
39 | default "512" |
40 | help | |
41 | This defines the number of virtual interrupt numbers the kernel | |
42 | can manage. Virtual interrupt numbers are what you see in | |
43 | /proc/interrupts. If you configure your system to have too few, | |
44 | drivers will fail to load or worse - handle with care. | |
45 | ||
fd3e0bbc CH |
46 | config STACKTRACE_SUPPORT |
47 | bool | |
48 | default y | |
49 | ||
01f4b8b8 AB |
50 | config HAVE_LATENCYTOP_SUPPORT |
51 | def_bool y | |
52 | ||
945feb17 BH |
53 | config TRACE_IRQFLAGS_SUPPORT |
54 | bool | |
945feb17 BH |
55 | default y |
56 | ||
57 | config LOCKDEP_SUPPORT | |
58 | bool | |
59 | default y | |
60 | ||
14cf11af PM |
61 | config RWSEM_GENERIC_SPINLOCK |
62 | bool | |
63 | ||
64 | config RWSEM_XCHGADD_ALGORITHM | |
65 | bool | |
66 | default y | |
67 | ||
95c354fe NP |
68 | config GENERIC_LOCKBREAK |
69 | bool | |
70 | default y | |
71 | depends on SMP && PREEMPT | |
72 | ||
f0d1b0b3 DH |
73 | config ARCH_HAS_ILOG2_U32 |
74 | bool | |
ef55d53c | 75 | default y |
f0d1b0b3 DH |
76 | |
77 | config ARCH_HAS_ILOG2_U64 | |
78 | bool | |
ef55d53c | 79 | default y if 64BIT |
f0d1b0b3 | 80 | |
e779b2f9 AM |
81 | config GENERIC_HWEIGHT |
82 | bool | |
83 | default y | |
84 | ||
b7ce3415 AV |
85 | config GENERIC_GPIO |
86 | bool | |
87 | help | |
88 | Generic GPIO API support | |
89 | ||
f057eac0 SR |
90 | config ARCH_NO_VIRT_TO_BUS |
91 | def_bool PPC64 | |
92 | ||
14cf11af PM |
93 | config PPC |
94 | bool | |
95 | default y | |
10f85f43 | 96 | select OF |
e6ce1324 | 97 | select OF_EARLY_FLATTREE |
2b79d696 SR |
98 | select HAVE_FTRACE_MCOUNT_RECORD |
99 | select HAVE_DYNAMIC_FTRACE | |
606576ce | 100 | select HAVE_FUNCTION_TRACER |
60ce8f72 | 101 | select HAVE_FUNCTION_GRAPH_TRACER |
7444a72e | 102 | select ARCH_WANT_OPTIONAL_GPIOLIB |
ec7748b5 | 103 | select HAVE_IDE |
a1f242ff | 104 | select HAVE_IOREMAP_PROT |
58340a07 | 105 | select HAVE_EFFICIENT_UNALIGNED_ACCESS |
3f550096 | 106 | select HAVE_KPROBES |
17ce452f | 107 | select HAVE_ARCH_KGDB |
9edddaa2 | 108 | select HAVE_KRETPROBES |
dec2b0d0 | 109 | select HAVE_ARCH_TRACEHOOK |
95f72d1e | 110 | select HAVE_MEMBLOCK |
1d7cfe18 | 111 | select HAVE_MEMBLOCK_NODE_MAP |
46bab4e4 | 112 | select HAVE_DMA_ATTRS |
80d3e8ab | 113 | select HAVE_DMA_API_DEBUG |
b7d7a240 | 114 | select USE_GENERIC_SMP_HELPERS if SMP |
4e491d14 | 115 | select HAVE_OPROFILE |
ee6a0932 | 116 | select HAVE_SYSCALL_WRAPPERS if PPC64 |
c2e95c6d | 117 | select GENERIC_ATOMIC64 if PPC32 |
7463449b | 118 | select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE |
e360adbe | 119 | select HAVE_IRQ_WORK |
cdd6c482 | 120 | select HAVE_PERF_EVENTS |
359e4284 | 121 | select HAVE_REGS_AND_STACK_ACCESS_API |
5aae8a53 | 122 | select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 |
2604362b | 123 | select HAVE_GENERIC_HARDIRQS |
ad5b7f13 | 124 | select SPARSE_IRQ |
2604362b | 125 | select IRQ_PER_CPU |
cc79ca69 | 126 | select IRQ_DOMAIN |
433c9c67 TG |
127 | select GENERIC_IRQ_SHOW |
128 | select GENERIC_IRQ_SHOW_LEVEL | |
e8d2c473 | 129 | select IRQ_FORCED_THREADING |
26723911 | 130 | select HAVE_RCU_TABLE_FREE if SMP |
02424d89 | 131 | select HAVE_SYSCALL_TRACEPOINTS |
e47b65b0 | 132 | select HAVE_BPF_JIT if PPC64 |
ac5f89c7 | 133 | select HAVE_ARCH_JUMP_LABEL |
df013ffb | 134 | select ARCH_HAVE_NMI_SAFE_CMPXCHG |
17e32eac | 135 | select GENERIC_SMP_IDLE_THREAD |
b9ed27df AMG |
136 | select GENERIC_CMOS_UPDATE |
137 | select GENERIC_TIME_VSYSCALL | |
138 | select GENERIC_CLOCKEVENTS | |
1629372c PM |
139 | select GENERIC_STRNCPY_FROM_USER |
140 | select GENERIC_STRNLEN_USER | |
14cf11af PM |
141 | |
142 | config EARLY_PRINTK | |
143 | bool | |
51d3082f | 144 | default y |
14cf11af PM |
145 | |
146 | config COMPAT | |
147 | bool | |
148 | default y if PPC64 | |
01e31dba | 149 | select COMPAT_BINFMT_ELF |
48b25c43 | 150 | select ARCH_WANT_OLD_COMPAT_IPC |
14cf11af PM |
151 | |
152 | config SYSVIPC_COMPAT | |
153 | bool | |
154 | depends on COMPAT && SYSVIPC | |
155 | default y | |
156 | ||
157 | # All PPC32s use generic nvram driver through ppc_md | |
158 | config GENERIC_NVRAM | |
159 | bool | |
160 | default y if PPC32 | |
161 | ||
ae1e9130 | 162 | config SCHED_OMIT_FRAME_POINTER |
14cf11af PM |
163 | bool |
164 | default y | |
165 | ||
166 | config ARCH_MAY_HAVE_PC_FDC | |
167 | bool | |
bed59275 | 168 | default !PPC_PSERIES || PCI |
14cf11af | 169 | |
08264cbc KG |
170 | config PPC_OF |
171 | def_bool y | |
172 | ||
173 | config PPC_UDBG_16550 | |
174 | bool | |
175 | default n | |
176 | ||
08264cbc KG |
177 | config GENERIC_TBSYNC |
178 | bool | |
179 | default y if PPC32 && SMP | |
180 | default n | |
181 | ||
e65e1fc2 AV |
182 | config AUDIT_ARCH |
183 | bool | |
184 | default y | |
185 | ||
73c9ceab JF |
186 | config GENERIC_BUG |
187 | bool | |
188 | default y | |
189 | depends on BUG | |
190 | ||
b3028878 | 191 | config SYS_SUPPORTS_APM_EMULATION |
58da10bb | 192 | default y if PMAC_APM_EMU |
b3028878 JB |
193 | bool |
194 | ||
6c5b59b9 DG |
195 | config EPAPR_BOOT |
196 | bool | |
197 | help | |
198 | Used to allow a board to specify it wants an ePAPR compliant wrapper. | |
199 | default n | |
200 | ||
f4fc4a5b KG |
201 | config DEFAULT_UIMAGE |
202 | bool | |
203 | help | |
204 | Used to allow a board to specify it wants a uImage built by default | |
205 | default n | |
206 | ||
b09c1644 SW |
207 | config REDBOOT |
208 | bool | |
209 | ||
801e4062 JB |
210 | config ARCH_HIBERNATION_POSSIBLE |
211 | bool | |
543b9fd3 JB |
212 | default y |
213 | ||
f4cb5700 JB |
214 | config ARCH_SUSPEND_POSSIBLE |
215 | def_bool y | |
4ffd6952 | 216 | depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ |
e5462d16 | 217 | (PPC_85xx && !SMP) || PPC_86xx || PPC_PSERIES || 44x || 40x |
f4cb5700 | 218 | |
4c75a6f4 BH |
219 | config PPC_DCR_NATIVE |
220 | bool | |
221 | default n | |
222 | ||
223 | config PPC_DCR_MMIO | |
224 | bool | |
225 | default n | |
226 | ||
227 | config PPC_DCR | |
228 | bool | |
229 | depends on PPC_DCR_NATIVE || PPC_DCR_MMIO | |
230 | default y | |
231 | ||
4c9d2800 BH |
232 | config PPC_OF_PLATFORM_PCI |
233 | bool | |
373a6da1 | 234 | depends on PCI |
4c9d2800 BH |
235 | depends on PPC64 # not supported on 32 bits yet |
236 | default n | |
237 | ||
6a11f75b AM |
238 | config ARCH_SUPPORTS_DEBUG_PAGEALLOC |
239 | def_bool y | |
240 | ||
172ae2e7 DK |
241 | config PPC_ADV_DEBUG_REGS |
242 | bool | |
243 | depends on 40x || BOOKE | |
244 | default y | |
245 | ||
246 | config PPC_ADV_DEBUG_IACS | |
247 | int | |
248 | depends on PPC_ADV_DEBUG_REGS | |
249 | default 4 if 44x | |
250 | default 2 | |
251 | ||
252 | config PPC_ADV_DEBUG_DACS | |
253 | int | |
254 | depends on PPC_ADV_DEBUG_REGS | |
255 | default 2 | |
256 | ||
257 | config PPC_ADV_DEBUG_DVCS | |
258 | int | |
259 | depends on PPC_ADV_DEBUG_REGS | |
260 | default 2 if 44x | |
261 | default 0 | |
262 | ||
263 | config PPC_ADV_DEBUG_DAC_RANGE | |
264 | bool | |
265 | depends on PPC_ADV_DEBUG_REGS && 44x | |
266 | default y | |
267 | ||
14cf11af PM |
268 | source "init/Kconfig" |
269 | ||
dc52ddc0 MH |
270 | source "kernel/Kconfig.freezer" |
271 | ||
a2d2e1ec | 272 | source "arch/powerpc/sysdev/Kconfig" |
4330f5da | 273 | source "arch/powerpc/platforms/Kconfig" |
14cf11af | 274 | |
14cf11af PM |
275 | menu "Kernel options" |
276 | ||
277 | config HIGHMEM | |
278 | bool "High memory support" | |
279 | depends on PPC32 | |
280 | ||
281 | source kernel/Kconfig.hz | |
282 | source kernel/Kconfig.preempt | |
283 | source "fs/Kconfig.binfmt" | |
284 | ||
ba72cb8c MG |
285 | config HUGETLB_PAGE_SIZE_VARIABLE |
286 | bool | |
287 | depends on HUGETLB_PAGE | |
288 | default y | |
289 | ||
14cf11af PM |
290 | config MATH_EMULATION |
291 | bool "Math emulation" | |
4d52719a | 292 | depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 |
14cf11af PM |
293 | ---help--- |
294 | Some PowerPC chips designed for embedded applications do not have | |
295 | a floating-point unit and therefore do not implement the | |
296 | floating-point instructions in the PowerPC instruction set. If you | |
297 | say Y here, the kernel will include code to emulate a floating-point | |
298 | unit, which will allow programs that use floating-point | |
299 | instructions to run. | |
300 | ||
5dd57a13 SW |
301 | config 8XX_MINIMAL_FPEMU |
302 | bool "Minimal math emulation for 8xx" | |
303 | depends on 8xx && !MATH_EMULATION | |
304 | help | |
305 | Older arch/ppc kernels still emulated a few floating point | |
306 | instructions such as load and store, even when full math | |
307 | emulation is disabled. Say "Y" here if you want to preserve | |
308 | this behavior. | |
309 | ||
310 | It is recommended that you build a soft-float userspace instead. | |
311 | ||
fb3475e9 FT |
312 | config IOMMU_HELPER |
313 | def_bool PPC64 | |
314 | ||
ec3cf2ec BB |
315 | config SWIOTLB |
316 | bool "SWIOTLB support" | |
317 | default n | |
318 | select IOMMU_HELPER | |
319 | ---help--- | |
320 | Support for IO bounce buffering for systems without an IOMMU. | |
321 | This allows us to DMA to the full physical address space on | |
322 | platforms where the size of a physical address is larger | |
323 | than the bus address. Not all platforms support this. | |
324 | ||
14cf11af PM |
325 | config HOTPLUG_CPU |
326 | bool "Support for enabling/disabling CPUs" | |
344eb010 | 327 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV) |
14cf11af PM |
328 | ---help--- |
329 | Say Y here to be able to disable and re-enable individual | |
330 | CPUs at runtime on SMP machines. | |
331 | ||
332 | Say N if you are unsure. | |
333 | ||
12633e80 NF |
334 | config ARCH_CPU_PROBE_RELEASE |
335 | def_bool y | |
336 | depends on HOTPLUG_CPU | |
337 | ||
cc57637b YG |
338 | config ARCH_ENABLE_MEMORY_HOTPLUG |
339 | def_bool y | |
340 | ||
a99824f3 BP |
341 | config ARCH_HAS_WALK_MEMORY |
342 | def_bool y | |
343 | ||
1482471d BP |
344 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
345 | def_bool y | |
346 | ||
14cf11af PM |
347 | config KEXEC |
348 | bool "kexec system call (EXPERIMENTAL)" | |
68343020 | 349 | depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) && EXPERIMENTAL |
14cf11af PM |
350 | help |
351 | kexec is a system call that implements the ability to shutdown your | |
352 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 353 | but it is independent of the system firmware. And like a reboot |
14cf11af PM |
354 | you can start any kernel with it, not just Linux. |
355 | ||
1f1332f7 | 356 | The name comes from the similarity to the exec system call. |
14cf11af PM |
357 | |
358 | It is an ongoing process to be certain the hardware in a machine | |
359 | is properly shutdown, so do not be surprised if this code does not | |
360 | initially work for you. It may help to enable device hotplugging | |
361 | support. As of this writing the exact hardware interface is | |
362 | strongly in flux, so no good recommendation can be made. | |
363 | ||
e8625d46 | 364 | config CRASH_DUMP |
3420b5da | 365 | bool "Build a kdump crash kernel" |
47da4219 | 366 | depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) |
5b2e478d | 367 | select RELOCATABLE if PPC64 || 44x |
0f890c8d | 368 | select DYNAMIC_MEMSTART if FSL_BOOKE |
e8625d46 HM |
369 | help |
370 | Build a kernel suitable for use as a kdump capture kernel. | |
54622f10 MK |
371 | The same kernel binary can be used as production kernel and dump |
372 | capture kernel. | |
e8625d46 | 373 | |
eb39c880 MS |
374 | config FA_DUMP |
375 | bool "Firmware-assisted dump" | |
376 | depends on PPC64 && PPC_RTAS && CRASH_DUMP | |
242f271c | 377 | help |
eb39c880 MS |
378 | A robust mechanism to get reliable kernel crash dump with |
379 | assistance from firmware. This approach does not use kexec, | |
380 | instead firmware assists in booting the kdump kernel | |
381 | while preserving memory contents. Firmware-assisted dump | |
382 | is meant to be a kdump replacement offering robustness and | |
383 | speed not possible without system firmware assistance. | |
242f271c MA |
384 | |
385 | If unsure, say "N" | |
386 | ||
14cf11af PM |
387 | config IRQ_ALL_CPUS |
388 | bool "Distribute interrupts on all CPUs by default" | |
389 | depends on SMP && !MV64360 | |
390 | help | |
391 | This option gives the kernel permission to distribute IRQs across | |
392 | multiple CPUs. Saying N here will route all IRQs to the first | |
393 | CPU. Generally saying Y is safe, although some problems have been | |
394 | reported with SMP Power Macintoshes with this option enabled. | |
395 | ||
ffa27b6b AW |
396 | config NUMA |
397 | bool "NUMA support" | |
398 | depends on PPC64 | |
399 | default y if SMP && PPC_PSERIES | |
400 | ||
c80d79d7 YG |
401 | config NODES_SHIFT |
402 | int | |
ea55bf29 | 403 | default "8" if PPC64 |
c80d79d7 YG |
404 | default "4" |
405 | depends on NEED_MULTIPLE_NODES | |
406 | ||
ea55bf29 AB |
407 | config MAX_ACTIVE_REGIONS |
408 | int | |
409 | default "256" if PPC64 | |
410 | default "32" | |
411 | ||
14cf11af PM |
412 | config ARCH_SELECT_MEMORY_MODEL |
413 | def_bool y | |
414 | depends on PPC64 | |
415 | ||
416 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
417 | def_bool y |
418 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 419 | |
45fb6cea | 420 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 421 | def_bool y |
9100b205 | 422 | depends on PPC64 |
d29eff7b | 423 | select SPARSEMEM_VMEMMAP_ENABLE |
14cf11af | 424 | |
45fb6cea | 425 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 426 | def_bool y |
78bde53e | 427 | depends on (SMP && PPC_PSERIES) || PPC_PS3 |
14cf11af | 428 | |
5a1eb5c4 | 429 | config SYS_SUPPORTS_HUGETLBFS |
41151e77 | 430 | bool |
5a1eb5c4 | 431 | |
c67c3cb4 | 432 | source "mm/Kconfig" |
14cf11af | 433 | |
7e9191da MK |
434 | config ARCH_MEMORY_PROBE |
435 | def_bool y | |
436 | depends on MEMORY_HOTPLUG | |
437 | ||
75167957 AW |
438 | # Some NUMA nodes have memory ranges that span |
439 | # other nodes. Even though a pfn is valid and | |
440 | # between a node's start and end pfns, it may not | |
441 | # reside on that node. See memmap_init_zone() | |
442 | # for details. | |
443 | config NODES_SPAN_OTHER_NODES | |
444 | def_bool y | |
445 | depends on NEED_MULTIPLE_NODES | |
446 | ||
16c2d476 BH |
447 | config PPC_HAS_HASH_64K |
448 | bool | |
449 | depends on PPC64 | |
450 | default n | |
451 | ||
e1240122 YT |
452 | config STDBINUTILS |
453 | bool "Using standard binutils settings" | |
454 | depends on 44x | |
455 | default y | |
456 | help | |
457 | Turning this option off allows you to select 256KB PAGE_SIZE on 44x. | |
458 | Note, that kernel will be able to run only those applications, | |
459 | which had been compiled using binutils later than 2.17.50.0.3 with | |
460 | '-zmax-page-size' set to 256K (the default is 64K). Or, if using | |
461 | the older binutils, you can patch them with a trivial patch, which | |
462 | changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. | |
463 | ||
ca9153a3 IY |
464 | choice |
465 | prompt "Page size" | |
466 | default PPC_4K_PAGES | |
3c726f8d | 467 | help |
ca9153a3 IY |
468 | Select the kernel logical page size. Increasing the page size |
469 | will reduce software overhead at each page boundary, allow | |
470 | hardware prefetch mechanisms to be more effective, and allow | |
471 | larger dma transfers increasing IO efficiency and reducing | |
472 | overhead. However the utilization of memory will increase. | |
473 | For example, each cached file will using a multiple of the | |
474 | page size to hold its contents and the difference between the | |
475 | end of file and the end of page is wasted. | |
476 | ||
477 | Some dedicated systems, such as software raid serving with | |
478 | accelerated calculations, have shown significant increases. | |
479 | ||
480 | If you configure a 64 bit kernel for 64k pages but the | |
481 | processor does not support them, then the kernel will simulate | |
482 | them with 4k pages, loading them on demand, but with the | |
483 | reduced software overhead and larger internal fragmentation. | |
484 | For the 32 bit kernel, a large page option will not be offered | |
485 | unless it is supported by the configured processor. | |
486 | ||
487 | If unsure, choose 4K_PAGES. | |
488 | ||
489 | config PPC_4K_PAGES | |
490 | bool "4k page size" | |
491 | ||
492 | config PPC_16K_PAGES | |
493 | bool "16k page size" if 44x | |
494 | ||
495 | config PPC_64K_PAGES | |
2d27cfd3 | 496 | bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 |
ca9153a3 IY |
497 | select PPC_HAS_HASH_64K if PPC_STD_MMU_64 |
498 | ||
e1240122 YT |
499 | config PPC_256K_PAGES |
500 | bool "256k page size" if 44x | |
adf213c4 | 501 | depends on !STDBINUTILS |
e1240122 YT |
502 | help |
503 | Make the page size 256k. | |
504 | ||
505 | As the ELF standard only requires alignment to support page | |
506 | sizes up to 64k, you will need to compile all of your user | |
507 | space applications with a non-standard binutils settings | |
508 | (see the STDBINUTILS description for details). | |
509 | ||
510 | Say N unless you know what you are doing. | |
511 | ||
ca9153a3 | 512 | endchoice |
3c726f8d | 513 | |
53bcddb9 SR |
514 | config FORCE_MAX_ZONEORDER |
515 | int "Maximum zone order" | |
066c4b87 BH |
516 | range 9 64 if PPC64 && PPC_64K_PAGES |
517 | default "9" if PPC64 && PPC_64K_PAGES | |
518 | range 13 64 if PPC64 && !PPC_64K_PAGES | |
519 | default "13" if PPC64 && !PPC_64K_PAGES | |
520 | range 9 64 if PPC32 && PPC_16K_PAGES | |
521 | default "9" if PPC32 && PPC_16K_PAGES | |
522 | range 7 64 if PPC32 && PPC_64K_PAGES | |
523 | default "7" if PPC32 && PPC_64K_PAGES | |
524 | range 5 64 if PPC32 && PPC_256K_PAGES | |
525 | default "5" if PPC32 && PPC_256K_PAGES | |
ebe40c5c | 526 | range 11 64 |
53bcddb9 SR |
527 | default "11" |
528 | help | |
529 | The kernel memory allocator divides physically contiguous memory | |
530 | blocks into "zones", where each zone is a power of two number of | |
531 | pages. This option selects the largest power of two that the kernel | |
532 | keeps in the memory allocator. If you need to allocate very large | |
533 | blocks of physically contiguous memory, then you may need to | |
534 | increase this value. | |
535 | ||
536 | This config option is actually maximum order plus one. For example, | |
537 | a value of 11 means that the largest free memory block is 2^10 pages. | |
538 | ||
539 | The page size is not necessarily 4KB. For example, on 64-bit | |
540 | systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep | |
541 | this in mind when choosing a value for this option. | |
542 | ||
fa28237c PM |
543 | config PPC_SUBPAGE_PROT |
544 | bool "Support setting protections for 4k subpages" | |
ca9153a3 | 545 | depends on PPC_STD_MMU_64 && PPC_64K_PAGES |
fa28237c PM |
546 | help |
547 | This option adds support for a system call to allow user programs | |
548 | to set access permissions (read/write, readonly, or no access) | |
549 | on the 4k subpages of each 64k page. | |
550 | ||
14cf11af PM |
551 | config SCHED_SMT |
552 | bool "SMT (Hyperthreading) scheduler support" | |
553 | depends on PPC64 && SMP | |
14cf11af PM |
554 | help |
555 | SMT scheduler support improves the CPU scheduler's decision making | |
556 | when dealing with POWER5 cpus at a cost of slightly increased | |
557 | overhead in some places. If unsure say N here. | |
558 | ||
14cf11af PM |
559 | config CMDLINE_BOOL |
560 | bool "Default bootloader kernel arguments" | |
14cf11af PM |
561 | |
562 | config CMDLINE | |
563 | string "Initial kernel command string" | |
564 | depends on CMDLINE_BOOL | |
565 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
566 | help | |
567 | On some platforms, there is currently no way for the boot loader to | |
568 | pass arguments to the kernel. For these platforms, you can supply | |
569 | some command-line options at build time by entering them here. In | |
570 | most cases you will need to specify the root device here. | |
571 | ||
c356aa45 GL |
572 | config EXTRA_TARGETS |
573 | string "Additional default image types" | |
574 | help | |
575 | List additional targets to be built by the bootwrapper here (separated | |
576 | by spaces). This is useful for targets that depend of device tree | |
577 | files in the .dts directory. | |
578 | ||
579 | Targets in this list will be build as part of the default build | |
580 | target, or when the user does a 'make zImage' or a | |
581 | 'make zImage.initrd'. | |
582 | ||
583 | If unsure, leave blank | |
584 | ||
b28f5081 JB |
585 | config ARCH_WANTS_FREEZER_CONTROL |
586 | def_bool y | |
587 | depends on ADB_PMU | |
588 | ||
14cf11af | 589 | source kernel/power/Kconfig |
14cf11af PM |
590 | |
591 | config SECCOMP | |
592 | bool "Enable seccomp to safely compute untrusted bytecode" | |
593 | depends on PROC_FS | |
594 | default y | |
595 | help | |
596 | This kernel feature is useful for number crunching applications | |
597 | that may need to compute untrusted bytecode during their | |
598 | execution. By using pipes or other transports made available to | |
599 | the process as file descriptors supporting the read/write | |
600 | syscalls, it's possible to isolate those applications in | |
601 | their own address space using seccomp. Once seccomp is | |
602 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
603 | and the task is only allowed to execute a few safe syscalls | |
604 | defined by each seccomp mode. | |
605 | ||
606 | If unsure, say Y. Only embedded should say N here. | |
607 | ||
608 | endmenu | |
609 | ||
610 | config ISA_DMA_API | |
611 | bool | |
3d066d77 | 612 | default PCI |
14cf11af PM |
613 | |
614 | menu "Bus options" | |
615 | ||
616 | config ISA | |
617 | bool "Support for ISA-bus hardware" | |
618 | depends on PPC_PREP || PPC_CHRP | |
f9bd170a | 619 | select PPC_I8259 |
14cf11af PM |
620 | help |
621 | Find out whether you have ISA slots on your motherboard. ISA is the | |
622 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
623 | inside your box. If you have an Apple machine, say N here; if you | |
624 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If | |
625 | you have an embedded board, consult your board documentation. | |
626 | ||
5ac6da66 CL |
627 | config ZONE_DMA |
628 | bool | |
629 | default y | |
630 | ||
af407c6d FT |
631 | config NEED_DMA_MAP_STATE |
632 | def_bool (PPC64 || NOT_COHERENT_CACHE) | |
633 | ||
e32205eb FT |
634 | config NEED_SG_DMA_LENGTH |
635 | def_bool y | |
636 | ||
14cf11af PM |
637 | config GENERIC_ISA_DMA |
638 | bool | |
1927445a | 639 | depends on ISA_DMA_API |
14cf11af PM |
640 | default y |
641 | ||
25635c71 PM |
642 | config PPC_INDIRECT_PCI |
643 | bool | |
644 | depends on PCI | |
63dafe57 | 645 | default y if 40x || 44x |
25635c71 PM |
646 | default n |
647 | ||
14cf11af PM |
648 | config EISA |
649 | bool | |
650 | ||
651 | config SBUS | |
652 | bool | |
653 | ||
08264cbc KG |
654 | config FSL_SOC |
655 | bool | |
b489da87 | 656 | select HAVE_CAN_FLEXCAN if NET && CAN |
6d4ae2dd | 657 | select PPC_CLOCK |
08264cbc | 658 | |
55c44991 RZ |
659 | config FSL_PCI |
660 | bool | |
661 | select PPC_INDIRECT_PCI | |
d0839118 | 662 | select PCI_QUIRKS |
55c44991 | 663 | |
4ffd6952 AV |
664 | config FSL_PMC |
665 | bool | |
666 | default y | |
667 | depends on SUSPEND && (PPC_85xx || PPC_86xx) | |
668 | help | |
669 | Freescale MPC85xx/MPC86xx power management controller support | |
670 | (suspend/resume). For MPC83xx see platforms/83xx/suspend.c | |
671 | ||
d164f6d4 VG |
672 | config PPC4xx_CPM |
673 | bool | |
674 | default y | |
675 | depends on SUSPEND && (44x || 40x) | |
676 | help | |
677 | PPC4xx Clock Power Management (CPM) support (suspend/resume). | |
678 | It also enables support for two different idle states (idle-wait | |
679 | and idle-doze). | |
680 | ||
2a706919 SR |
681 | config 4xx_SOC |
682 | bool | |
683 | ||
acaa7aa3 | 684 | config FSL_LBC |
3ab8f2a2 RZ |
685 | bool "Freescale Local Bus support" |
686 | depends on FSL_SOC | |
acaa7aa3 | 687 | help |
3ab8f2a2 RZ |
688 | Enables reporting of errors from the Freescale local bus |
689 | controller. Also contains some common code used by | |
690 | drivers for specific local bus peripherals. | |
acaa7aa3 | 691 | |
a20cbdef PK |
692 | config FSL_IFC |
693 | bool | |
694 | depends on FSL_SOC | |
695 | ||
83ff9dcf AV |
696 | config FSL_GTM |
697 | bool | |
698 | depends on PPC_83xx || QUICC_ENGINE || CPM2 | |
699 | help | |
700 | Freescale General-purpose Timers support | |
701 | ||
14cf11af PM |
702 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
703 | config MCA | |
704 | bool | |
705 | ||
b500563b JR |
706 | # Platforms that what PCI turned unconditionally just do select PCI |
707 | # in their config node. Platforms that want to choose at config | |
708 | # time should select PPC_PCI_CHOICE | |
709 | config PPC_PCI_CHOICE | |
710 | bool | |
711 | ||
14cf11af | 712 | config PCI |
b500563b JR |
713 | bool "PCI support" if PPC_PCI_CHOICE |
714 | default y if !40x && !CPM2 && !8xx && !PPC_83xx \ | |
bcc48591 | 715 | && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON |
f21f49ea | 716 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx |
14cf11af | 717 | default PCI_QSPAN if !4xx && !CPM2 && 8xx |
df87ef55 | 718 | select ARCH_SUPPORTS_MSI |
335b8cf7 | 719 | select GENERIC_PCI_IOMAP |
14cf11af PM |
720 | help |
721 | Find out whether your system includes a PCI bus. PCI is the name of | |
722 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
723 | your box. If you say Y here, the kernel will include drivers and | |
724 | infrastructure code to support PCI bus devices. | |
725 | ||
726 | config PCI_DOMAINS | |
36e23590 MW |
727 | def_bool PCI |
728 | ||
729 | config PCI_SYSCALL | |
730 | def_bool PCI | |
14cf11af | 731 | |
14cf11af PM |
732 | config PCI_QSPAN |
733 | bool "QSpan PCI" | |
734 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 735 | select PPC_I8259 |
14cf11af PM |
736 | help |
737 | Say Y here if you have a system based on a Motorola 8xx-series | |
738 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
739 | ||
740 | config PCI_8260 | |
741 | bool | |
742 | depends on PCI && 8260 | |
25635c71 | 743 | select PPC_INDIRECT_PCI |
14cf11af PM |
744 | default y |
745 | ||
746 | config 8260_PCI9 | |
4a3ecc62 | 747 | bool "Enable workaround for MPC826x erratum PCI 9" |
e00c5498 | 748 | depends on PCI_8260 && !8272 |
14cf11af PM |
749 | default y |
750 | ||
bb53bb3d JM |
751 | source "drivers/pci/pcie/Kconfig" |
752 | ||
14cf11af PM |
753 | source "drivers/pci/Kconfig" |
754 | ||
755 | source "drivers/pcmcia/Kconfig" | |
756 | ||
757 | source "drivers/pci/hotplug/Kconfig" | |
758 | ||
f1f389d5 ZW |
759 | config HAS_RAPIDIO |
760 | bool | |
761 | default n | |
762 | ||
763 | config RAPIDIO | |
764 | bool "RapidIO support" | |
388b78ad | 765 | depends on HAS_RAPIDIO || PCI |
f1f389d5 ZW |
766 | help |
767 | If you say Y here, the kernel will include drivers and | |
768 | infrastructure code to support RapidIO interconnect devices. | |
769 | ||
388b78ad AB |
770 | config FSL_RIO |
771 | bool "Freescale Embedded SRIO Controller support" | |
772 | depends on RAPIDIO && HAS_RAPIDIO | |
773 | default "n" | |
774 | ---help--- | |
775 | Include support for RapidIO controller on Freescale embedded | |
776 | processors (MPC8548, MPC8641, etc). | |
777 | ||
f1f389d5 ZW |
778 | source "drivers/rapidio/Kconfig" |
779 | ||
14cf11af PM |
780 | endmenu |
781 | ||
0f890c8d SP |
782 | config NONSTATIC_KERNEL |
783 | bool | |
784 | default n | |
785 | ||
14cf11af PM |
786 | menu "Advanced setup" |
787 | depends on PPC32 | |
788 | ||
789 | config ADVANCED_OPTIONS | |
790 | bool "Prompt for advanced kernel configuration options" | |
791 | help | |
792 | This option will enable prompting for a variety of advanced kernel | |
793 | configuration options. These options can cause the kernel to not | |
794 | work if they are set incorrectly, but can be used to optimize certain | |
795 | aspects of kernel memory management. | |
796 | ||
797 | Unless you know what you are doing, say N here. | |
798 | ||
799 | comment "Default settings for advanced configuration options are used" | |
800 | depends on !ADVANCED_OPTIONS | |
801 | ||
14cf11af PM |
802 | config LOWMEM_SIZE_BOOL |
803 | bool "Set maximum low memory" | |
804 | depends on ADVANCED_OPTIONS | |
805 | help | |
806 | This option allows you to set the maximum amount of memory which | |
807 | will be used as "low memory", that is, memory which the kernel can | |
808 | access directly, without having to set up a kernel virtual mapping. | |
809 | This can be useful in optimizing the layout of kernel virtual | |
810 | memory. | |
811 | ||
812 | Say N here unless you know what you are doing. | |
813 | ||
814 | config LOWMEM_SIZE | |
815 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
816 | default "0x30000000" | |
817 | ||
96051465 TP |
818 | config LOWMEM_CAM_NUM_BOOL |
819 | bool "Set number of CAMs to use to map low memory" | |
820 | depends on ADVANCED_OPTIONS && FSL_BOOKE | |
821 | help | |
822 | This option allows you to set the maximum number of CAM slots that | |
823 | will be used to map low memory. There are a limited number of slots | |
824 | available and even more limited number that will fit in the L1 MMU. | |
825 | However, using more entries will allow mapping more low memory. This | |
826 | can be useful in optimizing the layout of kernel virtual memory. | |
827 | ||
828 | Say N here unless you know what you are doing. | |
829 | ||
830 | config LOWMEM_CAM_NUM | |
9b71dbd3 | 831 | depends on FSL_BOOKE |
96051465 TP |
832 | int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL |
833 | default 3 | |
834 | ||
0f890c8d SP |
835 | config DYNAMIC_MEMSTART |
836 | bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)" | |
23913245 | 837 | depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) |
0f890c8d SP |
838 | select NONSTATIC_KERNEL |
839 | help | |
840 | This option enables the kernel to be loaded at any page aligned | |
841 | physical address. The kernel creates a mapping from KERNELBASE to | |
842 | the address where the kernel is loaded. The page size here implies | |
843 | the TLB page size of the mapping for kernel on the particular platform. | |
844 | Please refer to the init code for finding the TLB page size. | |
845 | ||
846 | DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE | |
847 | kernel image, where the only restriction is the page aligned kernel | |
848 | load address. When this option is enabled, the compile time physical | |
849 | address CONFIG_PHYSICAL_START is ignored. | |
850 | ||
9c5f7d39 SP |
851 | This option is overridden by CONFIG_RELOCATABLE |
852 | ||
37dd2bad KG |
853 | config RELOCATABLE |
854 | bool "Build a relocatable kernel (EXPERIMENTAL)" | |
26ecb6c4 | 855 | depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x |
9c5f7d39 | 856 | select NONSTATIC_KERNEL |
37dd2bad KG |
857 | help |
858 | This builds a kernel image that is capable of running at the | |
9c5f7d39 SP |
859 | location the kernel is loaded at, without any alignment restrictions. |
860 | This feature is a superset of DYNAMIC_MEMSTART and hence overrides it. | |
37dd2bad KG |
861 | |
862 | One use is for the kexec on panic case where the recovery kernel | |
863 | must live at a different physical address than the primary | |
864 | kernel. | |
865 | ||
866 | Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address | |
867 | it has been loaded at and the compile time physical addresses | |
868 | CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START | |
869 | setting can still be useful to bootwrappers that need to know the | |
9c5f7d39 SP |
870 | load address of the kernel (eg. u-boot/mkimage). |
871 | ||
872 | config RELOCATABLE_PPC32 | |
873 | def_bool y | |
874 | depends on PPC32 && RELOCATABLE | |
37dd2bad KG |
875 | |
876 | config PAGE_OFFSET_BOOL | |
877 | bool "Set custom page offset address" | |
878 | depends on ADVANCED_OPTIONS | |
879 | help | |
880 | This option allows you to set the kernel virtual address at which | |
881 | the kernel will map low memory. This can be useful in optimizing | |
882 | the virtual memory layout of the system. | |
883 | ||
884 | Say N here unless you know what you are doing. | |
885 | ||
886 | config PAGE_OFFSET | |
887 | hex "Virtual address of memory base" if PAGE_OFFSET_BOOL | |
888 | default "0xc0000000" | |
889 | ||
14cf11af PM |
890 | config KERNEL_START_BOOL |
891 | bool "Set custom kernel base address" | |
892 | depends on ADVANCED_OPTIONS | |
893 | help | |
894 | This option allows you to set the kernel virtual address at which | |
37dd2bad KG |
895 | the kernel will be loaded. Normally this should match PAGE_OFFSET |
896 | however there are times (like kdump) that one might not want them | |
897 | to be the same. | |
14cf11af PM |
898 | |
899 | Say N here unless you know what you are doing. | |
900 | ||
901 | config KERNEL_START | |
902 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
37dd2bad | 903 | default PAGE_OFFSET if PAGE_OFFSET_BOOL |
0f890c8d | 904 | default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL |
14cf11af PM |
905 | default "0xc0000000" |
906 | ||
37dd2bad KG |
907 | config PHYSICAL_START_BOOL |
908 | bool "Set physical address where the kernel is loaded" | |
909 | depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
910 | help | |
911 | This gives the physical address where the kernel is loaded. | |
912 | ||
913 | Say N here unless you know what you are doing. | |
914 | ||
915 | config PHYSICAL_START | |
916 | hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL | |
0f890c8d | 917 | default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL |
37dd2bad KG |
918 | default "0x00000000" |
919 | ||
920 | config PHYSICAL_ALIGN | |
921 | hex | |
c8f3570b | 922 | default "0x04000000" if FSL_BOOKE |
37dd2bad KG |
923 | help |
924 | This value puts the alignment restrictions on physical address | |
925 | where kernel is loaded and run from. Kernel is compiled for an | |
926 | address which meets above alignment restriction. | |
927 | ||
14cf11af PM |
928 | config TASK_SIZE_BOOL |
929 | bool "Set custom user task size" | |
930 | depends on ADVANCED_OPTIONS | |
931 | help | |
932 | This option allows you to set the amount of virtual address space | |
933 | allocated to user tasks. This can be useful in optimizing the | |
934 | virtual memory layout of the system. | |
935 | ||
936 | Say N here unless you know what you are doing. | |
937 | ||
938 | config TASK_SIZE | |
939 | hex "Size of user task space" if TASK_SIZE_BOOL | |
4d9e5510 KG |
940 | default "0x80000000" if PPC_PREP || PPC_8xx |
941 | default "0xc0000000" | |
14cf11af | 942 | |
84532a0f BH |
943 | config CONSISTENT_SIZE_BOOL |
944 | bool "Set custom consistent memory pool size" | |
945 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
946 | help | |
947 | This option allows you to set the size of the | |
948 | consistent memory pool. This pool of virtual memory | |
949 | is used to make consistent memory allocations. | |
950 | ||
951 | config CONSISTENT_SIZE | |
952 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
953 | default "0x00200000" if NOT_COHERENT_CACHE | |
954 | ||
14cf11af PM |
955 | config PIN_TLB |
956 | bool "Pinned Kernel TLBs (860 ONLY)" | |
957 | depends on ADVANCED_OPTIONS && 8xx | |
958 | endmenu | |
959 | ||
cabb5587 | 960 | if PPC64 |
549e8152 PM |
961 | config RELOCATABLE |
962 | bool "Build a relocatable kernel" | |
0f890c8d | 963 | select NONSTATIC_KERNEL |
549e8152 PM |
964 | help |
965 | This builds a kernel image that is capable of running anywhere | |
966 | in the RMA (real memory area) at any 16k-aligned base address. | |
967 | The kernel is linked as a position-independent executable (PIE) | |
968 | and contains dynamic relocations which are processed early | |
969 | in the bootup process. | |
970 | ||
971 | One use is for the kexec on panic case where the recovery kernel | |
972 | must live at a different physical address than the primary | |
973 | kernel. | |
974 | ||
37dd2bad KG |
975 | config PAGE_OFFSET |
976 | hex | |
977 | default "0xc000000000000000" | |
cabb5587 SR |
978 | config KERNEL_START |
979 | hex | |
eeb2d218 | 980 | default "0xc000000000000000" |
37dd2bad KG |
981 | config PHYSICAL_START |
982 | hex | |
37dd2bad | 983 | default "0x00000000" |
cabb5587 SR |
984 | endif |
985 | ||
14cf11af PM |
986 | source "net/Kconfig" |
987 | ||
988 | source "drivers/Kconfig" | |
989 | ||
990 | source "fs/Kconfig" | |
991 | ||
98658538 LY |
992 | source "arch/powerpc/sysdev/qe_lib/Kconfig" |
993 | ||
14cf11af PM |
994 | source "lib/Kconfig" |
995 | ||
14cf11af PM |
996 | source "arch/powerpc/Kconfig.debug" |
997 | ||
998 | source "security/Kconfig" | |
999 | ||
1000 | config KEYS_COMPAT | |
1001 | bool | |
1002 | depends on COMPAT && KEYS | |
1003 | default y | |
1004 | ||
1005 | source "crypto/Kconfig" | |
6f668280 DP |
1006 | |
1007 | config PPC_CLOCK | |
1008 | bool | |
1009 | default n | |
9483a578 | 1010 | select HAVE_CLK |
1088a209 SM |
1011 | |
1012 | config PPC_LIB_RHEAP | |
1013 | bool | |
1014 | ||
bbf45ba5 | 1015 | source "arch/powerpc/kvm/Kconfig" |