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 | |
e779b2f9 AM |
90 | config GENERIC_HWEIGHT |
91 | bool | |
92 | default y | |
93 | ||
b7ce3415 AV |
94 | config GENERIC_GPIO |
95 | bool | |
96 | help | |
97 | Generic GPIO API support | |
98 | ||
f057eac0 SR |
99 | config ARCH_NO_VIRT_TO_BUS |
100 | def_bool PPC64 | |
101 | ||
14cf11af PM |
102 | config PPC |
103 | bool | |
104 | default y | |
10f85f43 | 105 | select OF |
e6ce1324 | 106 | select OF_EARLY_FLATTREE |
2b79d696 SR |
107 | select HAVE_FTRACE_MCOUNT_RECORD |
108 | select HAVE_DYNAMIC_FTRACE | |
606576ce | 109 | select HAVE_FUNCTION_TRACER |
60ce8f72 | 110 | select HAVE_FUNCTION_GRAPH_TRACER |
7444a72e | 111 | select ARCH_WANT_OPTIONAL_GPIOLIB |
ec7748b5 | 112 | select HAVE_IDE |
a1f242ff | 113 | select HAVE_IOREMAP_PROT |
58340a07 | 114 | select HAVE_EFFICIENT_UNALIGNED_ACCESS |
3f550096 | 115 | select HAVE_KPROBES |
17ce452f | 116 | select HAVE_ARCH_KGDB |
9edddaa2 | 117 | select HAVE_KRETPROBES |
dec2b0d0 | 118 | select HAVE_ARCH_TRACEHOOK |
95f72d1e | 119 | select HAVE_MEMBLOCK |
46bab4e4 | 120 | select HAVE_DMA_ATTRS |
80d3e8ab | 121 | select HAVE_DMA_API_DEBUG |
b7d7a240 | 122 | select USE_GENERIC_SMP_HELPERS if SMP |
4e491d14 | 123 | select HAVE_OPROFILE |
ee6a0932 | 124 | select HAVE_SYSCALL_WRAPPERS if PPC64 |
c2e95c6d | 125 | select GENERIC_ATOMIC64 if PPC32 |
e360adbe | 126 | select HAVE_IRQ_WORK |
cdd6c482 | 127 | select HAVE_PERF_EVENTS |
359e4284 | 128 | select HAVE_REGS_AND_STACK_ACCESS_API |
5aae8a53 | 129 | select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 |
2604362b TG |
130 | select HAVE_GENERIC_HARDIRQS |
131 | select HAVE_SPARSE_IRQ | |
132 | select IRQ_PER_CPU | |
433c9c67 TG |
133 | select GENERIC_IRQ_SHOW |
134 | select GENERIC_IRQ_SHOW_LEVEL | |
26723911 | 135 | select HAVE_RCU_TABLE_FREE if SMP |
02424d89 | 136 | select HAVE_SYSCALL_TRACEPOINTS |
0ca87f05 | 137 | select HAVE_BPF_JIT if PPC64 |
14cf11af PM |
138 | |
139 | config EARLY_PRINTK | |
140 | bool | |
51d3082f | 141 | default y |
14cf11af PM |
142 | |
143 | config COMPAT | |
144 | bool | |
145 | default y if PPC64 | |
01e31dba | 146 | select COMPAT_BINFMT_ELF |
14cf11af PM |
147 | |
148 | config SYSVIPC_COMPAT | |
149 | bool | |
150 | depends on COMPAT && SYSVIPC | |
151 | default y | |
152 | ||
153 | # All PPC32s use generic nvram driver through ppc_md | |
154 | config GENERIC_NVRAM | |
155 | bool | |
156 | default y if PPC32 | |
157 | ||
ae1e9130 | 158 | config SCHED_OMIT_FRAME_POINTER |
14cf11af PM |
159 | bool |
160 | default y | |
161 | ||
162 | config ARCH_MAY_HAVE_PC_FDC | |
163 | bool | |
bed59275 | 164 | default !PPC_PSERIES || PCI |
14cf11af | 165 | |
08264cbc KG |
166 | config PPC_OF |
167 | def_bool y | |
168 | ||
169 | config PPC_UDBG_16550 | |
170 | bool | |
171 | default n | |
172 | ||
08264cbc KG |
173 | config GENERIC_TBSYNC |
174 | bool | |
175 | default y if PPC32 && SMP | |
176 | default n | |
177 | ||
e65e1fc2 AV |
178 | config AUDIT_ARCH |
179 | bool | |
180 | default y | |
181 | ||
73c9ceab JF |
182 | config GENERIC_BUG |
183 | bool | |
184 | default y | |
185 | depends on BUG | |
186 | ||
b3028878 | 187 | config SYS_SUPPORTS_APM_EMULATION |
58da10bb | 188 | default y if PMAC_APM_EMU |
b3028878 JB |
189 | bool |
190 | ||
6c5b59b9 DG |
191 | config EPAPR_BOOT |
192 | bool | |
193 | help | |
194 | Used to allow a board to specify it wants an ePAPR compliant wrapper. | |
195 | default n | |
196 | ||
f4fc4a5b KG |
197 | config DEFAULT_UIMAGE |
198 | bool | |
199 | help | |
200 | Used to allow a board to specify it wants a uImage built by default | |
201 | default n | |
202 | ||
b09c1644 SW |
203 | config REDBOOT |
204 | bool | |
205 | ||
801e4062 JB |
206 | config ARCH_HIBERNATION_POSSIBLE |
207 | bool | |
543b9fd3 JB |
208 | default y |
209 | ||
f4cb5700 JB |
210 | config ARCH_SUSPEND_POSSIBLE |
211 | def_bool y | |
4ffd6952 | 212 | depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ |
e5462d16 | 213 | (PPC_85xx && !SMP) || PPC_86xx || PPC_PSERIES || 44x || 40x |
f4cb5700 | 214 | |
4c75a6f4 BH |
215 | config PPC_DCR_NATIVE |
216 | bool | |
217 | default n | |
218 | ||
219 | config PPC_DCR_MMIO | |
220 | bool | |
221 | default n | |
222 | ||
223 | config PPC_DCR | |
224 | bool | |
225 | depends on PPC_DCR_NATIVE || PPC_DCR_MMIO | |
226 | default y | |
227 | ||
4c9d2800 BH |
228 | config PPC_OF_PLATFORM_PCI |
229 | bool | |
373a6da1 | 230 | depends on PCI |
4c9d2800 BH |
231 | depends on PPC64 # not supported on 32 bits yet |
232 | default n | |
233 | ||
6a11f75b AM |
234 | config ARCH_SUPPORTS_DEBUG_PAGEALLOC |
235 | def_bool y | |
236 | ||
172ae2e7 DK |
237 | config PPC_ADV_DEBUG_REGS |
238 | bool | |
239 | depends on 40x || BOOKE | |
240 | default y | |
241 | ||
242 | config PPC_ADV_DEBUG_IACS | |
243 | int | |
244 | depends on PPC_ADV_DEBUG_REGS | |
245 | default 4 if 44x | |
246 | default 2 | |
247 | ||
248 | config PPC_ADV_DEBUG_DACS | |
249 | int | |
250 | depends on PPC_ADV_DEBUG_REGS | |
251 | default 2 | |
252 | ||
253 | config PPC_ADV_DEBUG_DVCS | |
254 | int | |
255 | depends on PPC_ADV_DEBUG_REGS | |
256 | default 2 if 44x | |
257 | default 0 | |
258 | ||
259 | config PPC_ADV_DEBUG_DAC_RANGE | |
260 | bool | |
261 | depends on PPC_ADV_DEBUG_REGS && 44x | |
262 | default y | |
263 | ||
14cf11af PM |
264 | source "init/Kconfig" |
265 | ||
dc52ddc0 MH |
266 | source "kernel/Kconfig.freezer" |
267 | ||
a2d2e1ec | 268 | source "arch/powerpc/sysdev/Kconfig" |
4330f5da | 269 | source "arch/powerpc/platforms/Kconfig" |
14cf11af | 270 | |
14cf11af PM |
271 | menu "Kernel options" |
272 | ||
273 | config HIGHMEM | |
274 | bool "High memory support" | |
275 | depends on PPC32 | |
276 | ||
1ad74998 | 277 | source kernel/time/Kconfig |
14cf11af PM |
278 | source kernel/Kconfig.hz |
279 | source kernel/Kconfig.preempt | |
280 | source "fs/Kconfig.binfmt" | |
281 | ||
ba72cb8c MG |
282 | config HUGETLB_PAGE_SIZE_VARIABLE |
283 | bool | |
284 | depends on HUGETLB_PAGE | |
285 | default y | |
286 | ||
14cf11af PM |
287 | config MATH_EMULATION |
288 | bool "Math emulation" | |
4d52719a | 289 | depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 |
14cf11af PM |
290 | ---help--- |
291 | Some PowerPC chips designed for embedded applications do not have | |
292 | a floating-point unit and therefore do not implement the | |
293 | floating-point instructions in the PowerPC instruction set. If you | |
294 | say Y here, the kernel will include code to emulate a floating-point | |
295 | unit, which will allow programs that use floating-point | |
296 | instructions to run. | |
297 | ||
5dd57a13 SW |
298 | config 8XX_MINIMAL_FPEMU |
299 | bool "Minimal math emulation for 8xx" | |
300 | depends on 8xx && !MATH_EMULATION | |
301 | help | |
302 | Older arch/ppc kernels still emulated a few floating point | |
303 | instructions such as load and store, even when full math | |
304 | emulation is disabled. Say "Y" here if you want to preserve | |
305 | this behavior. | |
306 | ||
307 | It is recommended that you build a soft-float userspace instead. | |
308 | ||
fb3475e9 FT |
309 | config IOMMU_HELPER |
310 | def_bool PPC64 | |
311 | ||
ec3cf2ec BB |
312 | config SWIOTLB |
313 | bool "SWIOTLB support" | |
314 | default n | |
315 | select IOMMU_HELPER | |
316 | ---help--- | |
317 | Support for IO bounce buffering for systems without an IOMMU. | |
318 | This allows us to DMA to the full physical address space on | |
319 | platforms where the size of a physical address is larger | |
320 | than the bus address. Not all platforms support this. | |
321 | ||
14cf11af PM |
322 | config HOTPLUG_CPU |
323 | bool "Support for enabling/disabling CPUs" | |
324 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) | |
325 | ---help--- | |
326 | Say Y here to be able to disable and re-enable individual | |
327 | CPUs at runtime on SMP machines. | |
328 | ||
329 | Say N if you are unsure. | |
330 | ||
12633e80 NF |
331 | config ARCH_CPU_PROBE_RELEASE |
332 | def_bool y | |
333 | depends on HOTPLUG_CPU | |
334 | ||
cc57637b YG |
335 | config ARCH_ENABLE_MEMORY_HOTPLUG |
336 | def_bool y | |
337 | ||
a99824f3 BP |
338 | config ARCH_HAS_WALK_MEMORY |
339 | def_bool y | |
340 | ||
1482471d BP |
341 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
342 | def_bool y | |
343 | ||
14cf11af PM |
344 | config KEXEC |
345 | bool "kexec system call (EXPERIMENTAL)" | |
f933a41e | 346 | depends on (PPC_BOOK3S || FSL_BOOKE) && EXPERIMENTAL |
14cf11af PM |
347 | help |
348 | kexec is a system call that implements the ability to shutdown your | |
349 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 350 | but it is independent of the system firmware. And like a reboot |
14cf11af PM |
351 | you can start any kernel with it, not just Linux. |
352 | ||
1f1332f7 | 353 | The name comes from the similarity to the exec system call. |
14cf11af PM |
354 | |
355 | It is an ongoing process to be certain the hardware in a machine | |
356 | is properly shutdown, so do not be surprised if this code does not | |
357 | initially work for you. It may help to enable device hotplugging | |
358 | support. As of this writing the exact hardware interface is | |
359 | strongly in flux, so no good recommendation can be made. | |
360 | ||
e8625d46 | 361 | config CRASH_DUMP |
3420b5da | 362 | bool "Build a kdump crash kernel" |
f933a41e MM |
363 | depends on PPC64 || 6xx || FSL_BOOKE |
364 | select RELOCATABLE if PPC64 || FSL_BOOKE | |
e8625d46 HM |
365 | help |
366 | Build a kernel suitable for use as a kdump capture kernel. | |
54622f10 MK |
367 | The same kernel binary can be used as production kernel and dump |
368 | capture kernel. | |
e8625d46 | 369 | |
242f271c MA |
370 | config PHYP_DUMP |
371 | bool "Hypervisor-assisted dump (EXPERIMENTAL)" | |
372 | depends on PPC_PSERIES && EXPERIMENTAL | |
373 | help | |
374 | Hypervisor-assisted dump is meant to be a kdump replacement | |
375 | offering robustness and speed not possible without system | |
692105b8 | 376 | hypervisor assistance. |
242f271c MA |
377 | |
378 | If unsure, say "N" | |
379 | ||
14cf11af PM |
380 | config PPCBUG_NVRAM |
381 | bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC | |
382 | default y if PPC_PREP | |
383 | ||
384 | config IRQ_ALL_CPUS | |
385 | bool "Distribute interrupts on all CPUs by default" | |
386 | depends on SMP && !MV64360 | |
387 | help | |
388 | This option gives the kernel permission to distribute IRQs across | |
389 | multiple CPUs. Saying N here will route all IRQs to the first | |
390 | CPU. Generally saying Y is safe, although some problems have been | |
391 | reported with SMP Power Macintoshes with this option enabled. | |
392 | ||
ffa27b6b AW |
393 | config NUMA |
394 | bool "NUMA support" | |
395 | depends on PPC64 | |
396 | default y if SMP && PPC_PSERIES | |
397 | ||
c80d79d7 YG |
398 | config NODES_SHIFT |
399 | int | |
ea55bf29 | 400 | default "8" if PPC64 |
c80d79d7 YG |
401 | default "4" |
402 | depends on NEED_MULTIPLE_NODES | |
403 | ||
ea55bf29 AB |
404 | config MAX_ACTIVE_REGIONS |
405 | int | |
406 | default "256" if PPC64 | |
407 | default "32" | |
408 | ||
14cf11af PM |
409 | config ARCH_SELECT_MEMORY_MODEL |
410 | def_bool y | |
411 | depends on PPC64 | |
412 | ||
413 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
414 | def_bool y |
415 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 416 | |
45fb6cea | 417 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 418 | def_bool y |
9100b205 | 419 | depends on PPC64 |
d29eff7b | 420 | select SPARSEMEM_VMEMMAP_ENABLE |
14cf11af | 421 | |
45fb6cea | 422 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 423 | def_bool y |
78bde53e | 424 | depends on (SMP && PPC_PSERIES) || PPC_PS3 |
14cf11af | 425 | |
c67c3cb4 | 426 | config ARCH_POPULATES_NODE_MAP |
14cf11af | 427 | def_bool y |
c67c3cb4 | 428 | |
5a1eb5c4 BH |
429 | config SYS_SUPPORTS_HUGETLBFS |
430 | def_bool y | |
431 | depends on PPC_BOOK3S_64 | |
432 | ||
c67c3cb4 | 433 | source "mm/Kconfig" |
14cf11af | 434 | |
7e9191da MK |
435 | config ARCH_MEMORY_PROBE |
436 | def_bool y | |
437 | depends on MEMORY_HOTPLUG | |
438 | ||
75167957 AW |
439 | # Some NUMA nodes have memory ranges that span |
440 | # other nodes. Even though a pfn is valid and | |
441 | # between a node's start and end pfns, it may not | |
442 | # reside on that node. See memmap_init_zone() | |
443 | # for details. | |
444 | config NODES_SPAN_OTHER_NODES | |
445 | def_bool y | |
446 | depends on NEED_MULTIPLE_NODES | |
447 | ||
16c2d476 BH |
448 | config PPC_HAS_HASH_64K |
449 | bool | |
450 | depends on PPC64 | |
451 | default n | |
452 | ||
e1240122 YT |
453 | config STDBINUTILS |
454 | bool "Using standard binutils settings" | |
455 | depends on 44x | |
456 | default y | |
457 | help | |
458 | Turning this option off allows you to select 256KB PAGE_SIZE on 44x. | |
459 | Note, that kernel will be able to run only those applications, | |
460 | which had been compiled using binutils later than 2.17.50.0.3 with | |
461 | '-zmax-page-size' set to 256K (the default is 64K). Or, if using | |
462 | the older binutils, you can patch them with a trivial patch, which | |
463 | changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. | |
464 | ||
ca9153a3 IY |
465 | choice |
466 | prompt "Page size" | |
467 | default PPC_4K_PAGES | |
3c726f8d | 468 | help |
ca9153a3 IY |
469 | Select the kernel logical page size. Increasing the page size |
470 | will reduce software overhead at each page boundary, allow | |
471 | hardware prefetch mechanisms to be more effective, and allow | |
472 | larger dma transfers increasing IO efficiency and reducing | |
473 | overhead. However the utilization of memory will increase. | |
474 | For example, each cached file will using a multiple of the | |
475 | page size to hold its contents and the difference between the | |
476 | end of file and the end of page is wasted. | |
477 | ||
478 | Some dedicated systems, such as software raid serving with | |
479 | accelerated calculations, have shown significant increases. | |
480 | ||
481 | If you configure a 64 bit kernel for 64k pages but the | |
482 | processor does not support them, then the kernel will simulate | |
483 | them with 4k pages, loading them on demand, but with the | |
484 | reduced software overhead and larger internal fragmentation. | |
485 | For the 32 bit kernel, a large page option will not be offered | |
486 | unless it is supported by the configured processor. | |
487 | ||
488 | If unsure, choose 4K_PAGES. | |
489 | ||
490 | config PPC_4K_PAGES | |
491 | bool "4k page size" | |
492 | ||
493 | config PPC_16K_PAGES | |
494 | bool "16k page size" if 44x | |
495 | ||
496 | config PPC_64K_PAGES | |
2d27cfd3 | 497 | bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 |
ca9153a3 IY |
498 | select PPC_HAS_HASH_64K if PPC_STD_MMU_64 |
499 | ||
e1240122 YT |
500 | config PPC_256K_PAGES |
501 | bool "256k page size" if 44x | |
adf213c4 | 502 | depends on !STDBINUTILS |
e1240122 YT |
503 | help |
504 | Make the page size 256k. | |
505 | ||
506 | As the ELF standard only requires alignment to support page | |
507 | sizes up to 64k, you will need to compile all of your user | |
508 | space applications with a non-standard binutils settings | |
509 | (see the STDBINUTILS description for details). | |
510 | ||
511 | Say N unless you know what you are doing. | |
512 | ||
ca9153a3 | 513 | endchoice |
3c726f8d | 514 | |
53bcddb9 SR |
515 | config FORCE_MAX_ZONEORDER |
516 | int "Maximum zone order" | |
066c4b87 BH |
517 | range 9 64 if PPC64 && PPC_64K_PAGES |
518 | default "9" if PPC64 && PPC_64K_PAGES | |
519 | range 13 64 if PPC64 && !PPC_64K_PAGES | |
520 | default "13" if PPC64 && !PPC_64K_PAGES | |
521 | range 9 64 if PPC32 && PPC_16K_PAGES | |
522 | default "9" if PPC32 && PPC_16K_PAGES | |
523 | range 7 64 if PPC32 && PPC_64K_PAGES | |
524 | default "7" if PPC32 && PPC_64K_PAGES | |
525 | range 5 64 if PPC32 && PPC_256K_PAGES | |
526 | default "5" if PPC32 && PPC_256K_PAGES | |
ebe40c5c | 527 | range 11 64 |
53bcddb9 SR |
528 | default "11" |
529 | help | |
530 | The kernel memory allocator divides physically contiguous memory | |
531 | blocks into "zones", where each zone is a power of two number of | |
532 | pages. This option selects the largest power of two that the kernel | |
533 | keeps in the memory allocator. If you need to allocate very large | |
534 | blocks of physically contiguous memory, then you may need to | |
535 | increase this value. | |
536 | ||
537 | This config option is actually maximum order plus one. For example, | |
538 | a value of 11 means that the largest free memory block is 2^10 pages. | |
539 | ||
540 | The page size is not necessarily 4KB. For example, on 64-bit | |
541 | systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep | |
542 | this in mind when choosing a value for this option. | |
543 | ||
fa28237c PM |
544 | config PPC_SUBPAGE_PROT |
545 | bool "Support setting protections for 4k subpages" | |
ca9153a3 | 546 | depends on PPC_STD_MMU_64 && PPC_64K_PAGES |
fa28237c PM |
547 | help |
548 | This option adds support for a system call to allow user programs | |
549 | to set access permissions (read/write, readonly, or no access) | |
550 | on the 4k subpages of each 64k page. | |
551 | ||
14cf11af PM |
552 | config SCHED_SMT |
553 | bool "SMT (Hyperthreading) scheduler support" | |
554 | depends on PPC64 && SMP | |
14cf11af PM |
555 | help |
556 | SMT scheduler support improves the CPU scheduler's decision making | |
557 | when dealing with POWER5 cpus at a cost of slightly increased | |
558 | overhead in some places. If unsure say N here. | |
559 | ||
14cf11af PM |
560 | config CMDLINE_BOOL |
561 | bool "Default bootloader kernel arguments" | |
14cf11af PM |
562 | |
563 | config CMDLINE | |
564 | string "Initial kernel command string" | |
565 | depends on CMDLINE_BOOL | |
566 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
567 | help | |
568 | On some platforms, there is currently no way for the boot loader to | |
569 | pass arguments to the kernel. For these platforms, you can supply | |
570 | some command-line options at build time by entering them here. In | |
571 | most cases you will need to specify the root device here. | |
572 | ||
c356aa45 GL |
573 | config EXTRA_TARGETS |
574 | string "Additional default image types" | |
575 | help | |
576 | List additional targets to be built by the bootwrapper here (separated | |
577 | by spaces). This is useful for targets that depend of device tree | |
578 | files in the .dts directory. | |
579 | ||
580 | Targets in this list will be build as part of the default build | |
581 | target, or when the user does a 'make zImage' or a | |
582 | 'make zImage.initrd'. | |
583 | ||
584 | If unsure, leave blank | |
585 | ||
b28f5081 JB |
586 | config ARCH_WANTS_FREEZER_CONTROL |
587 | def_bool y | |
588 | depends on ADB_PMU | |
589 | ||
14cf11af | 590 | source kernel/power/Kconfig |
14cf11af PM |
591 | |
592 | config SECCOMP | |
593 | bool "Enable seccomp to safely compute untrusted bytecode" | |
594 | depends on PROC_FS | |
595 | default y | |
596 | help | |
597 | This kernel feature is useful for number crunching applications | |
598 | that may need to compute untrusted bytecode during their | |
599 | execution. By using pipes or other transports made available to | |
600 | the process as file descriptors supporting the read/write | |
601 | syscalls, it's possible to isolate those applications in | |
602 | their own address space using seccomp. Once seccomp is | |
603 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
604 | and the task is only allowed to execute a few safe syscalls | |
605 | defined by each seccomp mode. | |
606 | ||
607 | If unsure, say Y. Only embedded should say N here. | |
608 | ||
609 | endmenu | |
610 | ||
611 | config ISA_DMA_API | |
612 | bool | |
373a6da1 | 613 | default !PPC_ISERIES || PCI |
14cf11af PM |
614 | |
615 | menu "Bus options" | |
616 | ||
617 | config ISA | |
618 | bool "Support for ISA-bus hardware" | |
619 | depends on PPC_PREP || PPC_CHRP | |
f9bd170a | 620 | select PPC_I8259 |
14cf11af PM |
621 | help |
622 | Find out whether you have ISA slots on your motherboard. ISA is the | |
623 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
624 | inside your box. If you have an Apple machine, say N here; if you | |
625 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If | |
626 | you have an embedded board, consult your board documentation. | |
627 | ||
5ac6da66 CL |
628 | config ZONE_DMA |
629 | bool | |
630 | default y | |
631 | ||
af407c6d FT |
632 | config NEED_DMA_MAP_STATE |
633 | def_bool (PPC64 || NOT_COHERENT_CACHE) | |
634 | ||
e32205eb FT |
635 | config NEED_SG_DMA_LENGTH |
636 | def_bool y | |
637 | ||
14cf11af PM |
638 | config GENERIC_ISA_DMA |
639 | bool | |
1927445a | 640 | depends on ISA_DMA_API |
14cf11af PM |
641 | default y |
642 | ||
25635c71 PM |
643 | config PPC_INDIRECT_PCI |
644 | bool | |
645 | depends on PCI | |
63dafe57 | 646 | default y if 40x || 44x |
25635c71 PM |
647 | default n |
648 | ||
14cf11af PM |
649 | config EISA |
650 | bool | |
651 | ||
652 | config SBUS | |
653 | bool | |
654 | ||
08264cbc KG |
655 | config FSL_SOC |
656 | bool | |
657 | ||
55c44991 RZ |
658 | config FSL_PCI |
659 | bool | |
660 | select PPC_INDIRECT_PCI | |
d0839118 | 661 | select PCI_QUIRKS |
55c44991 | 662 | |
4ffd6952 AV |
663 | config FSL_PMC |
664 | bool | |
665 | default y | |
666 | depends on SUSPEND && (PPC_85xx || PPC_86xx) | |
667 | help | |
668 | Freescale MPC85xx/MPC86xx power management controller support | |
669 | (suspend/resume). For MPC83xx see platforms/83xx/suspend.c | |
670 | ||
d164f6d4 VG |
671 | config PPC4xx_CPM |
672 | bool | |
673 | default y | |
674 | depends on SUSPEND && (44x || 40x) | |
675 | help | |
676 | PPC4xx Clock Power Management (CPM) support (suspend/resume). | |
677 | It also enables support for two different idle states (idle-wait | |
678 | and idle-doze). | |
679 | ||
2a706919 SR |
680 | config 4xx_SOC |
681 | bool | |
682 | ||
acaa7aa3 | 683 | config FSL_LBC |
3ab8f2a2 RZ |
684 | bool "Freescale Local Bus support" |
685 | depends on FSL_SOC | |
acaa7aa3 | 686 | help |
3ab8f2a2 RZ |
687 | Enables reporting of errors from the Freescale local bus |
688 | controller. Also contains some common code used by | |
689 | drivers for specific local bus peripherals. | |
acaa7aa3 | 690 | |
83ff9dcf AV |
691 | config FSL_GTM |
692 | bool | |
693 | depends on PPC_83xx || QUICC_ENGINE || CPM2 | |
694 | help | |
695 | Freescale General-purpose Timers support | |
696 | ||
14cf11af PM |
697 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
698 | config MCA | |
699 | bool | |
700 | ||
b500563b JR |
701 | # Platforms that what PCI turned unconditionally just do select PCI |
702 | # in their config node. Platforms that want to choose at config | |
703 | # time should select PPC_PCI_CHOICE | |
704 | config PPC_PCI_CHOICE | |
705 | bool | |
706 | ||
14cf11af | 707 | config PCI |
b500563b JR |
708 | bool "PCI support" if PPC_PCI_CHOICE |
709 | default y if !40x && !CPM2 && !8xx && !PPC_83xx \ | |
bcc48591 | 710 | && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON |
f21f49ea | 711 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx |
14cf11af | 712 | default PCI_QSPAN if !4xx && !CPM2 && 8xx |
df87ef55 | 713 | select ARCH_SUPPORTS_MSI |
14cf11af PM |
714 | help |
715 | Find out whether your system includes a PCI bus. PCI is the name of | |
716 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
717 | your box. If you say Y here, the kernel will include drivers and | |
718 | infrastructure code to support PCI bus devices. | |
719 | ||
720 | config PCI_DOMAINS | |
36e23590 MW |
721 | def_bool PCI |
722 | ||
723 | config PCI_SYSCALL | |
724 | def_bool PCI | |
14cf11af | 725 | |
14cf11af PM |
726 | config PCI_QSPAN |
727 | bool "QSpan PCI" | |
728 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 729 | select PPC_I8259 |
14cf11af PM |
730 | help |
731 | Say Y here if you have a system based on a Motorola 8xx-series | |
732 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
733 | ||
734 | config PCI_8260 | |
735 | bool | |
736 | depends on PCI && 8260 | |
25635c71 | 737 | select PPC_INDIRECT_PCI |
14cf11af PM |
738 | default y |
739 | ||
740 | config 8260_PCI9 | |
4a3ecc62 | 741 | bool "Enable workaround for MPC826x erratum PCI 9" |
e00c5498 | 742 | depends on PCI_8260 && !8272 |
14cf11af PM |
743 | default y |
744 | ||
745 | choice | |
4a3ecc62 | 746 | prompt "IDMA channel for PCI 9 workaround" |
14cf11af PM |
747 | depends on 8260_PCI9 |
748 | ||
749 | config 8260_PCI9_IDMA1 | |
750 | bool "IDMA1" | |
751 | ||
752 | config 8260_PCI9_IDMA2 | |
753 | bool "IDMA2" | |
754 | ||
755 | config 8260_PCI9_IDMA3 | |
756 | bool "IDMA3" | |
757 | ||
758 | config 8260_PCI9_IDMA4 | |
759 | bool "IDMA4" | |
760 | ||
761 | endchoice | |
762 | ||
bb53bb3d JM |
763 | source "drivers/pci/pcie/Kconfig" |
764 | ||
14cf11af PM |
765 | source "drivers/pci/Kconfig" |
766 | ||
767 | source "drivers/pcmcia/Kconfig" | |
768 | ||
769 | source "drivers/pci/hotplug/Kconfig" | |
770 | ||
f1f389d5 ZW |
771 | config HAS_RAPIDIO |
772 | bool | |
773 | default n | |
774 | ||
775 | config RAPIDIO | |
776 | bool "RapidIO support" | |
388b78ad | 777 | depends on HAS_RAPIDIO || PCI |
f1f389d5 ZW |
778 | help |
779 | If you say Y here, the kernel will include drivers and | |
780 | infrastructure code to support RapidIO interconnect devices. | |
781 | ||
388b78ad AB |
782 | config FSL_RIO |
783 | bool "Freescale Embedded SRIO Controller support" | |
784 | depends on RAPIDIO && HAS_RAPIDIO | |
785 | default "n" | |
786 | ---help--- | |
787 | Include support for RapidIO controller on Freescale embedded | |
788 | processors (MPC8548, MPC8641, etc). | |
789 | ||
f1f389d5 ZW |
790 | source "drivers/rapidio/Kconfig" |
791 | ||
14cf11af PM |
792 | endmenu |
793 | ||
794 | menu "Advanced setup" | |
795 | depends on PPC32 | |
796 | ||
797 | config ADVANCED_OPTIONS | |
798 | bool "Prompt for advanced kernel configuration options" | |
799 | help | |
800 | This option will enable prompting for a variety of advanced kernel | |
801 | configuration options. These options can cause the kernel to not | |
802 | work if they are set incorrectly, but can be used to optimize certain | |
803 | aspects of kernel memory management. | |
804 | ||
805 | Unless you know what you are doing, say N here. | |
806 | ||
807 | comment "Default settings for advanced configuration options are used" | |
808 | depends on !ADVANCED_OPTIONS | |
809 | ||
14cf11af PM |
810 | config LOWMEM_SIZE_BOOL |
811 | bool "Set maximum low memory" | |
812 | depends on ADVANCED_OPTIONS | |
813 | help | |
814 | This option allows you to set the maximum amount of memory which | |
815 | will be used as "low memory", that is, memory which the kernel can | |
816 | access directly, without having to set up a kernel virtual mapping. | |
817 | This can be useful in optimizing the layout of kernel virtual | |
818 | memory. | |
819 | ||
820 | Say N here unless you know what you are doing. | |
821 | ||
822 | config LOWMEM_SIZE | |
823 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
824 | default "0x30000000" | |
825 | ||
96051465 TP |
826 | config LOWMEM_CAM_NUM_BOOL |
827 | bool "Set number of CAMs to use to map low memory" | |
828 | depends on ADVANCED_OPTIONS && FSL_BOOKE | |
829 | help | |
830 | This option allows you to set the maximum number of CAM slots that | |
831 | will be used to map low memory. There are a limited number of slots | |
832 | available and even more limited number that will fit in the L1 MMU. | |
833 | However, using more entries will allow mapping more low memory. This | |
834 | can be useful in optimizing the layout of kernel virtual memory. | |
835 | ||
836 | Say N here unless you know what you are doing. | |
837 | ||
838 | config LOWMEM_CAM_NUM | |
9b71dbd3 | 839 | depends on FSL_BOOKE |
96051465 TP |
840 | int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL |
841 | default 3 | |
842 | ||
37dd2bad KG |
843 | config RELOCATABLE |
844 | bool "Build a relocatable kernel (EXPERIMENTAL)" | |
845 | depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
846 | help | |
847 | This builds a kernel image that is capable of running at the | |
848 | location the kernel is loaded at (some alignment restrictions may | |
849 | exist). | |
850 | ||
851 | One use is for the kexec on panic case where the recovery kernel | |
852 | must live at a different physical address than the primary | |
853 | kernel. | |
854 | ||
855 | Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address | |
856 | it has been loaded at and the compile time physical addresses | |
857 | CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START | |
858 | setting can still be useful to bootwrappers that need to know the | |
859 | load location of the kernel (eg. u-boot/mkimage). | |
860 | ||
861 | config PAGE_OFFSET_BOOL | |
862 | bool "Set custom page offset address" | |
863 | depends on ADVANCED_OPTIONS | |
864 | help | |
865 | This option allows you to set the kernel virtual address at which | |
866 | the kernel will map low memory. This can be useful in optimizing | |
867 | the virtual memory layout of the system. | |
868 | ||
869 | Say N here unless you know what you are doing. | |
870 | ||
871 | config PAGE_OFFSET | |
872 | hex "Virtual address of memory base" if PAGE_OFFSET_BOOL | |
873 | default "0xc0000000" | |
874 | ||
14cf11af PM |
875 | config KERNEL_START_BOOL |
876 | bool "Set custom kernel base address" | |
877 | depends on ADVANCED_OPTIONS | |
878 | help | |
879 | This option allows you to set the kernel virtual address at which | |
37dd2bad KG |
880 | the kernel will be loaded. Normally this should match PAGE_OFFSET |
881 | however there are times (like kdump) that one might not want them | |
882 | to be the same. | |
14cf11af PM |
883 | |
884 | Say N here unless you know what you are doing. | |
885 | ||
886 | config KERNEL_START | |
887 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
37dd2bad | 888 | default PAGE_OFFSET if PAGE_OFFSET_BOOL |
f933a41e | 889 | default "0xc2000000" if CRASH_DUMP && !RELOCATABLE |
14cf11af PM |
890 | default "0xc0000000" |
891 | ||
37dd2bad KG |
892 | config PHYSICAL_START_BOOL |
893 | bool "Set physical address where the kernel is loaded" | |
894 | depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
895 | help | |
896 | This gives the physical address where the kernel is loaded. | |
897 | ||
898 | Say N here unless you know what you are doing. | |
899 | ||
900 | config PHYSICAL_START | |
901 | hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL | |
f933a41e | 902 | default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !RELOCATABLE |
37dd2bad KG |
903 | default "0x00000000" |
904 | ||
905 | config PHYSICAL_ALIGN | |
906 | hex | |
c8f3570b | 907 | default "0x04000000" if FSL_BOOKE |
37dd2bad KG |
908 | help |
909 | This value puts the alignment restrictions on physical address | |
910 | where kernel is loaded and run from. Kernel is compiled for an | |
911 | address which meets above alignment restriction. | |
912 | ||
14cf11af PM |
913 | config TASK_SIZE_BOOL |
914 | bool "Set custom user task size" | |
915 | depends on ADVANCED_OPTIONS | |
916 | help | |
917 | This option allows you to set the amount of virtual address space | |
918 | allocated to user tasks. This can be useful in optimizing the | |
919 | virtual memory layout of the system. | |
920 | ||
921 | Say N here unless you know what you are doing. | |
922 | ||
923 | config TASK_SIZE | |
924 | hex "Size of user task space" if TASK_SIZE_BOOL | |
4d9e5510 KG |
925 | default "0x80000000" if PPC_PREP || PPC_8xx |
926 | default "0xc0000000" | |
14cf11af | 927 | |
84532a0f BH |
928 | config CONSISTENT_SIZE_BOOL |
929 | bool "Set custom consistent memory pool size" | |
930 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
931 | help | |
932 | This option allows you to set the size of the | |
933 | consistent memory pool. This pool of virtual memory | |
934 | is used to make consistent memory allocations. | |
935 | ||
936 | config CONSISTENT_SIZE | |
937 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
938 | default "0x00200000" if NOT_COHERENT_CACHE | |
939 | ||
14cf11af PM |
940 | config PIN_TLB |
941 | bool "Pinned Kernel TLBs (860 ONLY)" | |
942 | depends on ADVANCED_OPTIONS && 8xx | |
943 | endmenu | |
944 | ||
cabb5587 | 945 | if PPC64 |
549e8152 PM |
946 | config RELOCATABLE |
947 | bool "Build a relocatable kernel" | |
948 | help | |
949 | This builds a kernel image that is capable of running anywhere | |
950 | in the RMA (real memory area) at any 16k-aligned base address. | |
951 | The kernel is linked as a position-independent executable (PIE) | |
952 | and contains dynamic relocations which are processed early | |
953 | in the bootup process. | |
954 | ||
955 | One use is for the kexec on panic case where the recovery kernel | |
956 | must live at a different physical address than the primary | |
957 | kernel. | |
958 | ||
37dd2bad KG |
959 | config PAGE_OFFSET |
960 | hex | |
961 | default "0xc000000000000000" | |
cabb5587 SR |
962 | config KERNEL_START |
963 | hex | |
eeb2d218 | 964 | default "0xc000000000000000" |
37dd2bad KG |
965 | config PHYSICAL_START |
966 | hex | |
37dd2bad | 967 | default "0x00000000" |
cabb5587 SR |
968 | endif |
969 | ||
14cf11af PM |
970 | source "net/Kconfig" |
971 | ||
972 | source "drivers/Kconfig" | |
973 | ||
974 | source "fs/Kconfig" | |
975 | ||
98658538 LY |
976 | source "arch/powerpc/sysdev/qe_lib/Kconfig" |
977 | ||
14cf11af PM |
978 | source "lib/Kconfig" |
979 | ||
14cf11af PM |
980 | source "arch/powerpc/Kconfig.debug" |
981 | ||
982 | source "security/Kconfig" | |
983 | ||
984 | config KEYS_COMPAT | |
985 | bool | |
986 | depends on COMPAT && KEYS | |
987 | default y | |
988 | ||
989 | source "crypto/Kconfig" | |
6f668280 DP |
990 | |
991 | config PPC_CLOCK | |
992 | bool | |
993 | default n | |
9483a578 | 994 | select HAVE_CLK |
1088a209 SM |
995 | |
996 | config PPC_LIB_RHEAP | |
997 | bool | |
998 | ||
bbf45ba5 | 999 | source "arch/powerpc/kvm/Kconfig" |