Commit | Line | Data |
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14cf11af PM |
1 | # For a description of the syntax of this configuration file, |
2 | # see Documentation/kbuild/kconfig-language.txt. | |
3 | # | |
4 | ||
5 | mainmenu "Linux/PowerPC Kernel Configuration" | |
6 | ||
a0ae9c7c | 7 | source "arch/powerpc/platforms/Kconfig.cputype" |
17e638bc | 8 | |
14cf11af PM |
9 | config PPC32 |
10 | bool | |
11 | default y if !PPC64 | |
12 | ||
13 | config 64BIT | |
14 | bool | |
15 | default y if PPC64 | |
16 | ||
2578bfae SR |
17 | config WORD_SIZE |
18 | int | |
19 | default 64 if PPC64 | |
20 | default 32 if !PPC64 | |
21 | ||
600715dc JF |
22 | config ARCH_PHYS_ADDR_T_64BIT |
23 | def_bool PPC64 || PHYS_64BIT | |
24 | ||
14cf11af PM |
25 | config MMU |
26 | bool | |
27 | default y | |
28 | ||
aa3be5f3 TB |
29 | config GENERIC_CMOS_UPDATE |
30 | def_bool y | |
31 | ||
4a4cfe38 TB |
32 | config GENERIC_TIME |
33 | def_bool y | |
34 | ||
35 | config GENERIC_TIME_VSYSCALL | |
36 | def_bool y | |
37 | ||
d831d0b8 TB |
38 | config GENERIC_CLOCKEVENTS |
39 | def_bool y | |
40 | ||
14cf11af PM |
41 | config GENERIC_HARDIRQS |
42 | bool | |
43 | default y | |
44 | ||
988c388a | 45 | config HAVE_SETUP_PER_CPU_AREA |
b32ef636 | 46 | def_bool PPC64 |
47 | ||
0d7012a9 IM |
48 | config IRQ_PER_CPU |
49 | bool | |
50 | default y | |
51 | ||
fd3e0bbc CH |
52 | config STACKTRACE_SUPPORT |
53 | bool | |
54 | default y | |
55 | ||
01f4b8b8 AB |
56 | config HAVE_LATENCYTOP_SUPPORT |
57 | def_bool y | |
58 | ||
945feb17 BH |
59 | config TRACE_IRQFLAGS_SUPPORT |
60 | bool | |
61 | depends on PPC64 | |
62 | default y | |
63 | ||
64 | config LOCKDEP_SUPPORT | |
65 | bool | |
66 | default y | |
67 | ||
14cf11af PM |
68 | config RWSEM_GENERIC_SPINLOCK |
69 | bool | |
70 | ||
71 | config RWSEM_XCHGADD_ALGORITHM | |
72 | bool | |
73 | default y | |
74 | ||
95c354fe NP |
75 | config GENERIC_LOCKBREAK |
76 | bool | |
77 | default y | |
78 | depends on SMP && PREEMPT | |
79 | ||
f0d1b0b3 DH |
80 | config ARCH_HAS_ILOG2_U32 |
81 | bool | |
ef55d53c | 82 | default y |
f0d1b0b3 DH |
83 | |
84 | config ARCH_HAS_ILOG2_U64 | |
85 | bool | |
ef55d53c | 86 | default y if 64BIT |
f0d1b0b3 | 87 | |
e779b2f9 AM |
88 | config GENERIC_HWEIGHT |
89 | bool | |
90 | default y | |
91 | ||
14cf11af PM |
92 | config GENERIC_CALIBRATE_DELAY |
93 | bool | |
94 | default y | |
95 | ||
0a9cb46a JM |
96 | config GENERIC_FIND_NEXT_BIT |
97 | bool | |
98 | default y | |
99 | ||
b7ce3415 AV |
100 | config GENERIC_GPIO |
101 | bool | |
102 | help | |
103 | Generic GPIO API support | |
104 | ||
f057eac0 SR |
105 | config ARCH_NO_VIRT_TO_BUS |
106 | def_bool PPC64 | |
107 | ||
14cf11af PM |
108 | config PPC |
109 | bool | |
110 | default y | |
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 |
d9b2b2a2 | 123 | select HAVE_LMB |
7ff86b03 | 124 | select HAVE_DMA_ATTRS if PPC64 |
b7d7a240 | 125 | select USE_GENERIC_SMP_HELPERS if SMP |
4e491d14 | 126 | select HAVE_OPROFILE |
ee6a0932 | 127 | select HAVE_SYSCALL_WRAPPERS if PPC64 |
14cf11af PM |
128 | |
129 | config EARLY_PRINTK | |
130 | bool | |
51d3082f | 131 | default y |
14cf11af PM |
132 | |
133 | config COMPAT | |
134 | bool | |
135 | default y if PPC64 | |
01e31dba | 136 | select COMPAT_BINFMT_ELF |
14cf11af PM |
137 | |
138 | config SYSVIPC_COMPAT | |
139 | bool | |
140 | depends on COMPAT && SYSVIPC | |
141 | default y | |
142 | ||
143 | # All PPC32s use generic nvram driver through ppc_md | |
144 | config GENERIC_NVRAM | |
145 | bool | |
146 | default y if PPC32 | |
147 | ||
ae1e9130 | 148 | config SCHED_OMIT_FRAME_POINTER |
14cf11af PM |
149 | bool |
150 | default y | |
151 | ||
152 | config ARCH_MAY_HAVE_PC_FDC | |
153 | bool | |
bed59275 | 154 | default !PPC_PSERIES || PCI |
14cf11af | 155 | |
08264cbc KG |
156 | config PPC_OF |
157 | def_bool y | |
158 | ||
97e873e5 SR |
159 | config OF |
160 | def_bool y | |
161 | ||
08264cbc KG |
162 | config PPC_UDBG_16550 |
163 | bool | |
164 | default n | |
165 | ||
08264cbc KG |
166 | config GENERIC_TBSYNC |
167 | bool | |
168 | default y if PPC32 && SMP | |
169 | default n | |
170 | ||
e65e1fc2 AV |
171 | config AUDIT_ARCH |
172 | bool | |
173 | default y | |
174 | ||
73c9ceab JF |
175 | config GENERIC_BUG |
176 | bool | |
177 | default y | |
178 | depends on BUG | |
179 | ||
b3028878 | 180 | config SYS_SUPPORTS_APM_EMULATION |
58da10bb | 181 | default y if PMAC_APM_EMU |
b3028878 JB |
182 | bool |
183 | ||
f4fc4a5b KG |
184 | config DEFAULT_UIMAGE |
185 | bool | |
186 | help | |
187 | Used to allow a board to specify it wants a uImage built by default | |
188 | default n | |
189 | ||
b09c1644 SW |
190 | config REDBOOT |
191 | bool | |
192 | ||
801e4062 | 193 | config HIBERNATE_32 |
543b9fd3 | 194 | bool |
801e4062 JB |
195 | depends on (PPC_PMAC && !SMP) || BROKEN |
196 | default y | |
197 | ||
198 | config HIBERNATE_64 | |
199 | bool | |
200 | depends on BROKEN || (PPC_PMAC64 && EXPERIMENTAL) | |
201 | default y | |
202 | ||
203 | config ARCH_HIBERNATION_POSSIBLE | |
204 | bool | |
205 | depends on (PPC64 && HIBERNATE_64) || (PPC32 && HIBERNATE_32) | |
543b9fd3 JB |
206 | default y |
207 | ||
f4cb5700 JB |
208 | config ARCH_SUSPEND_POSSIBLE |
209 | def_bool y | |
d49747bd | 210 | depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx |
f4cb5700 | 211 | |
4c75a6f4 BH |
212 | config PPC_DCR_NATIVE |
213 | bool | |
214 | default n | |
215 | ||
216 | config PPC_DCR_MMIO | |
217 | bool | |
218 | default n | |
219 | ||
220 | config PPC_DCR | |
221 | bool | |
222 | depends on PPC_DCR_NATIVE || PPC_DCR_MMIO | |
223 | default y | |
224 | ||
4c9d2800 BH |
225 | config PPC_OF_PLATFORM_PCI |
226 | bool | |
373a6da1 | 227 | depends on PCI |
4c9d2800 BH |
228 | depends on PPC64 # not supported on 32 bits yet |
229 | default n | |
230 | ||
6a11f75b AM |
231 | config ARCH_SUPPORTS_DEBUG_PAGEALLOC |
232 | def_bool y | |
233 | ||
14cf11af PM |
234 | source "init/Kconfig" |
235 | ||
dc52ddc0 MH |
236 | source "kernel/Kconfig.freezer" |
237 | ||
a2d2e1ec | 238 | source "arch/powerpc/sysdev/Kconfig" |
4330f5da | 239 | source "arch/powerpc/platforms/Kconfig" |
14cf11af | 240 | |
14cf11af PM |
241 | menu "Kernel options" |
242 | ||
243 | config HIGHMEM | |
244 | bool "High memory support" | |
245 | depends on PPC32 | |
246 | ||
1ad74998 | 247 | source kernel/time/Kconfig |
14cf11af PM |
248 | source kernel/Kconfig.hz |
249 | source kernel/Kconfig.preempt | |
250 | source "fs/Kconfig.binfmt" | |
251 | ||
ba72cb8c MG |
252 | config HUGETLB_PAGE_SIZE_VARIABLE |
253 | bool | |
254 | depends on HUGETLB_PAGE | |
255 | default y | |
256 | ||
14cf11af PM |
257 | config MATH_EMULATION |
258 | bool "Math emulation" | |
4d52719a | 259 | depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 |
14cf11af PM |
260 | ---help--- |
261 | Some PowerPC chips designed for embedded applications do not have | |
262 | a floating-point unit and therefore do not implement the | |
263 | floating-point instructions in the PowerPC instruction set. If you | |
264 | say Y here, the kernel will include code to emulate a floating-point | |
265 | unit, which will allow programs that use floating-point | |
266 | instructions to run. | |
267 | ||
5dd57a13 SW |
268 | config 8XX_MINIMAL_FPEMU |
269 | bool "Minimal math emulation for 8xx" | |
270 | depends on 8xx && !MATH_EMULATION | |
271 | help | |
272 | Older arch/ppc kernels still emulated a few floating point | |
273 | instructions such as load and store, even when full math | |
274 | emulation is disabled. Say "Y" here if you want to preserve | |
275 | this behavior. | |
276 | ||
277 | It is recommended that you build a soft-float userspace instead. | |
278 | ||
14cf11af | 279 | config IOMMU_VMERGE |
768cc2d3 LV |
280 | bool "Enable IOMMU virtual merging" |
281 | depends on PPC64 | |
282 | default y | |
14cf11af PM |
283 | help |
284 | Cause IO segments sent to a device for DMA to be merged virtually | |
285 | by the IOMMU when they happen to have been allocated contiguously. | |
286 | This doesn't add pressure to the IOMMU allocator. However, some | |
287 | drivers don't support getting large merged segments coming back | |
768cc2d3 LV |
288 | from *_map_sg(). |
289 | ||
290 | Most drivers don't have this problem; it is safe to say Y here. | |
14cf11af | 291 | |
fb3475e9 FT |
292 | config IOMMU_HELPER |
293 | def_bool PPC64 | |
294 | ||
15e09c0e BB |
295 | config PPC_NEED_DMA_SYNC_OPS |
296 | def_bool y | |
297 | depends on NOT_COHERENT_CACHE | |
298 | ||
14cf11af PM |
299 | config HOTPLUG_CPU |
300 | bool "Support for enabling/disabling CPUs" | |
301 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) | |
302 | ---help--- | |
303 | Say Y here to be able to disable and re-enable individual | |
304 | CPUs at runtime on SMP machines. | |
305 | ||
306 | Say N if you are unsure. | |
307 | ||
cc57637b YG |
308 | config ARCH_ENABLE_MEMORY_HOTPLUG |
309 | def_bool y | |
310 | ||
a99824f3 BP |
311 | config ARCH_HAS_WALK_MEMORY |
312 | def_bool y | |
313 | ||
1482471d BP |
314 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
315 | def_bool y | |
316 | ||
14cf11af PM |
317 | config KEXEC |
318 | bool "kexec system call (EXPERIMENTAL)" | |
cb93d568 | 319 | depends on PPC_BOOK3S && EXPERIMENTAL |
14cf11af PM |
320 | help |
321 | kexec is a system call that implements the ability to shutdown your | |
322 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 323 | but it is independent of the system firmware. And like a reboot |
14cf11af PM |
324 | you can start any kernel with it, not just Linux. |
325 | ||
1f1332f7 | 326 | The name comes from the similarity to the exec system call. |
14cf11af PM |
327 | |
328 | It is an ongoing process to be certain the hardware in a machine | |
329 | is properly shutdown, so do not be surprised if this code does not | |
330 | initially work for you. It may help to enable device hotplugging | |
331 | support. As of this writing the exact hardware interface is | |
332 | strongly in flux, so no good recommendation can be made. | |
333 | ||
e8625d46 | 334 | config CRASH_DUMP |
3420b5da | 335 | bool "Build a kdump crash kernel" |
c6ac71a1 MK |
336 | depends on PPC64 || 6xx |
337 | select RELOCATABLE if PPC64 | |
e8625d46 HM |
338 | help |
339 | Build a kernel suitable for use as a kdump capture kernel. | |
54622f10 MK |
340 | The same kernel binary can be used as production kernel and dump |
341 | capture kernel. | |
e8625d46 | 342 | |
242f271c MA |
343 | config PHYP_DUMP |
344 | bool "Hypervisor-assisted dump (EXPERIMENTAL)" | |
345 | depends on PPC_PSERIES && EXPERIMENTAL | |
346 | help | |
347 | Hypervisor-assisted dump is meant to be a kdump replacement | |
348 | offering robustness and speed not possible without system | |
692105b8 | 349 | hypervisor assistance. |
242f271c MA |
350 | |
351 | If unsure, say "N" | |
352 | ||
14cf11af PM |
353 | config PPCBUG_NVRAM |
354 | bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC | |
355 | default y if PPC_PREP | |
356 | ||
357 | config IRQ_ALL_CPUS | |
358 | bool "Distribute interrupts on all CPUs by default" | |
359 | depends on SMP && !MV64360 | |
360 | help | |
361 | This option gives the kernel permission to distribute IRQs across | |
362 | multiple CPUs. Saying N here will route all IRQs to the first | |
363 | CPU. Generally saying Y is safe, although some problems have been | |
364 | reported with SMP Power Macintoshes with this option enabled. | |
365 | ||
ffa27b6b AW |
366 | config NUMA |
367 | bool "NUMA support" | |
368 | depends on PPC64 | |
369 | default y if SMP && PPC_PSERIES | |
370 | ||
c80d79d7 YG |
371 | config NODES_SHIFT |
372 | int | |
373 | default "4" | |
374 | depends on NEED_MULTIPLE_NODES | |
375 | ||
14cf11af PM |
376 | config ARCH_SELECT_MEMORY_MODEL |
377 | def_bool y | |
378 | depends on PPC64 | |
379 | ||
380 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
381 | def_bool y |
382 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 383 | |
45fb6cea | 384 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 385 | def_bool y |
9100b205 | 386 | depends on PPC64 |
d29eff7b | 387 | select SPARSEMEM_VMEMMAP_ENABLE |
14cf11af | 388 | |
45fb6cea | 389 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 390 | def_bool y |
78bde53e | 391 | depends on (SMP && PPC_PSERIES) || PPC_PS3 |
14cf11af | 392 | |
c67c3cb4 | 393 | config ARCH_POPULATES_NODE_MAP |
14cf11af | 394 | def_bool y |
c67c3cb4 MG |
395 | |
396 | source "mm/Kconfig" | |
14cf11af | 397 | |
7e9191da MK |
398 | config ARCH_MEMORY_PROBE |
399 | def_bool y | |
400 | depends on MEMORY_HOTPLUG | |
401 | ||
75167957 AW |
402 | # Some NUMA nodes have memory ranges that span |
403 | # other nodes. Even though a pfn is valid and | |
404 | # between a node's start and end pfns, it may not | |
405 | # reside on that node. See memmap_init_zone() | |
406 | # for details. | |
407 | config NODES_SPAN_OTHER_NODES | |
408 | def_bool y | |
409 | depends on NEED_MULTIPLE_NODES | |
410 | ||
16c2d476 BH |
411 | config PPC_HAS_HASH_64K |
412 | bool | |
413 | depends on PPC64 | |
414 | default n | |
415 | ||
e1240122 YT |
416 | config STDBINUTILS |
417 | bool "Using standard binutils settings" | |
418 | depends on 44x | |
419 | default y | |
420 | help | |
421 | Turning this option off allows you to select 256KB PAGE_SIZE on 44x. | |
422 | Note, that kernel will be able to run only those applications, | |
423 | which had been compiled using binutils later than 2.17.50.0.3 with | |
424 | '-zmax-page-size' set to 256K (the default is 64K). Or, if using | |
425 | the older binutils, you can patch them with a trivial patch, which | |
426 | changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. | |
427 | ||
ca9153a3 IY |
428 | choice |
429 | prompt "Page size" | |
430 | default PPC_4K_PAGES | |
3c726f8d | 431 | help |
ca9153a3 IY |
432 | Select the kernel logical page size. Increasing the page size |
433 | will reduce software overhead at each page boundary, allow | |
434 | hardware prefetch mechanisms to be more effective, and allow | |
435 | larger dma transfers increasing IO efficiency and reducing | |
436 | overhead. However the utilization of memory will increase. | |
437 | For example, each cached file will using a multiple of the | |
438 | page size to hold its contents and the difference between the | |
439 | end of file and the end of page is wasted. | |
440 | ||
441 | Some dedicated systems, such as software raid serving with | |
442 | accelerated calculations, have shown significant increases. | |
443 | ||
444 | If you configure a 64 bit kernel for 64k pages but the | |
445 | processor does not support them, then the kernel will simulate | |
446 | them with 4k pages, loading them on demand, but with the | |
447 | reduced software overhead and larger internal fragmentation. | |
448 | For the 32 bit kernel, a large page option will not be offered | |
449 | unless it is supported by the configured processor. | |
450 | ||
451 | If unsure, choose 4K_PAGES. | |
452 | ||
453 | config PPC_4K_PAGES | |
454 | bool "4k page size" | |
455 | ||
456 | config PPC_16K_PAGES | |
457 | bool "16k page size" if 44x | |
458 | ||
459 | config PPC_64K_PAGES | |
460 | bool "64k page size" if 44x || PPC_STD_MMU_64 | |
461 | select PPC_HAS_HASH_64K if PPC_STD_MMU_64 | |
462 | ||
e1240122 YT |
463 | config PPC_256K_PAGES |
464 | bool "256k page size" if 44x | |
465 | depends on !STDBINUTILS && (!SHMEM || BROKEN) | |
466 | help | |
467 | Make the page size 256k. | |
468 | ||
469 | As the ELF standard only requires alignment to support page | |
470 | sizes up to 64k, you will need to compile all of your user | |
471 | space applications with a non-standard binutils settings | |
472 | (see the STDBINUTILS description for details). | |
473 | ||
474 | Say N unless you know what you are doing. | |
475 | ||
ca9153a3 | 476 | endchoice |
3c726f8d | 477 | |
53bcddb9 SR |
478 | config FORCE_MAX_ZONEORDER |
479 | int "Maximum zone order" | |
ca9153a3 IY |
480 | range 9 64 if PPC_STD_MMU_64 && PPC_64K_PAGES |
481 | default "9" if PPC_STD_MMU_64 && PPC_64K_PAGES | |
482 | range 13 64 if PPC_STD_MMU_64 && !PPC_64K_PAGES | |
483 | default "13" if PPC_STD_MMU_64 && !PPC_64K_PAGES | |
484 | range 9 64 if PPC_STD_MMU_32 && PPC_16K_PAGES | |
485 | default "9" if PPC_STD_MMU_32 && PPC_16K_PAGES | |
486 | range 7 64 if PPC_STD_MMU_32 && PPC_64K_PAGES | |
487 | default "7" if PPC_STD_MMU_32 && PPC_64K_PAGES | |
e1240122 YT |
488 | range 5 64 if PPC_STD_MMU_32 && PPC_256K_PAGES |
489 | default "5" if PPC_STD_MMU_32 && PPC_256K_PAGES | |
ebe40c5c | 490 | range 11 64 |
53bcddb9 SR |
491 | default "11" |
492 | help | |
493 | The kernel memory allocator divides physically contiguous memory | |
494 | blocks into "zones", where each zone is a power of two number of | |
495 | pages. This option selects the largest power of two that the kernel | |
496 | keeps in the memory allocator. If you need to allocate very large | |
497 | blocks of physically contiguous memory, then you may need to | |
498 | increase this value. | |
499 | ||
500 | This config option is actually maximum order plus one. For example, | |
501 | a value of 11 means that the largest free memory block is 2^10 pages. | |
502 | ||
503 | The page size is not necessarily 4KB. For example, on 64-bit | |
504 | systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep | |
505 | this in mind when choosing a value for this option. | |
506 | ||
fa28237c PM |
507 | config PPC_SUBPAGE_PROT |
508 | bool "Support setting protections for 4k subpages" | |
ca9153a3 | 509 | depends on PPC_STD_MMU_64 && PPC_64K_PAGES |
fa28237c PM |
510 | help |
511 | This option adds support for a system call to allow user programs | |
512 | to set access permissions (read/write, readonly, or no access) | |
513 | on the 4k subpages of each 64k page. | |
514 | ||
14cf11af PM |
515 | config SCHED_SMT |
516 | bool "SMT (Hyperthreading) scheduler support" | |
517 | depends on PPC64 && SMP | |
14cf11af PM |
518 | help |
519 | SMT scheduler support improves the CPU scheduler's decision making | |
520 | when dealing with POWER5 cpus at a cost of slightly increased | |
521 | overhead in some places. If unsure say N here. | |
522 | ||
523 | config PROC_DEVICETREE | |
5f296755 PM |
524 | bool "Support for device tree in /proc" |
525 | depends on PROC_FS | |
14cf11af PM |
526 | help |
527 | This option adds a device-tree directory under /proc which contains | |
528 | an image of the device tree that the kernel copies from Open | |
5f296755 | 529 | Firmware or other boot firmware. If unsure, say Y here. |
14cf11af | 530 | |
14cf11af PM |
531 | config CMDLINE_BOOL |
532 | bool "Default bootloader kernel arguments" | |
14cf11af PM |
533 | |
534 | config CMDLINE | |
535 | string "Initial kernel command string" | |
536 | depends on CMDLINE_BOOL | |
537 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
538 | help | |
539 | On some platforms, there is currently no way for the boot loader to | |
540 | pass arguments to the kernel. For these platforms, you can supply | |
541 | some command-line options at build time by entering them here. In | |
542 | most cases you will need to specify the root device here. | |
543 | ||
c356aa45 GL |
544 | config EXTRA_TARGETS |
545 | string "Additional default image types" | |
546 | help | |
547 | List additional targets to be built by the bootwrapper here (separated | |
548 | by spaces). This is useful for targets that depend of device tree | |
549 | files in the .dts directory. | |
550 | ||
551 | Targets in this list will be build as part of the default build | |
552 | target, or when the user does a 'make zImage' or a | |
553 | 'make zImage.initrd'. | |
554 | ||
555 | If unsure, leave blank | |
556 | ||
14cf11af | 557 | if !44x || BROKEN |
b28f5081 JB |
558 | config ARCH_WANTS_FREEZER_CONTROL |
559 | def_bool y | |
560 | depends on ADB_PMU | |
561 | ||
14cf11af PM |
562 | source kernel/power/Kconfig |
563 | endif | |
564 | ||
565 | config SECCOMP | |
566 | bool "Enable seccomp to safely compute untrusted bytecode" | |
567 | depends on PROC_FS | |
568 | default y | |
569 | help | |
570 | This kernel feature is useful for number crunching applications | |
571 | that may need to compute untrusted bytecode during their | |
572 | execution. By using pipes or other transports made available to | |
573 | the process as file descriptors supporting the read/write | |
574 | syscalls, it's possible to isolate those applications in | |
575 | their own address space using seccomp. Once seccomp is | |
576 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
577 | and the task is only allowed to execute a few safe syscalls | |
578 | defined by each seccomp mode. | |
579 | ||
580 | If unsure, say Y. Only embedded should say N here. | |
581 | ||
582 | endmenu | |
583 | ||
584 | config ISA_DMA_API | |
585 | bool | |
373a6da1 | 586 | default !PPC_ISERIES || PCI |
14cf11af PM |
587 | |
588 | menu "Bus options" | |
589 | ||
590 | config ISA | |
591 | bool "Support for ISA-bus hardware" | |
592 | depends on PPC_PREP || PPC_CHRP | |
f9bd170a | 593 | select PPC_I8259 |
14cf11af PM |
594 | help |
595 | Find out whether you have ISA slots on your motherboard. ISA is the | |
596 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
597 | inside your box. If you have an Apple machine, say N here; if you | |
598 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If | |
599 | you have an embedded board, consult your board documentation. | |
600 | ||
5ac6da66 CL |
601 | config ZONE_DMA |
602 | bool | |
603 | default y | |
604 | ||
14cf11af PM |
605 | config GENERIC_ISA_DMA |
606 | bool | |
607 | depends on PPC64 || POWER4 || 6xx && !CPM2 | |
608 | default y | |
609 | ||
25635c71 PM |
610 | config PPC_INDIRECT_PCI |
611 | bool | |
612 | depends on PCI | |
63dafe57 | 613 | default y if 40x || 44x |
25635c71 PM |
614 | default n |
615 | ||
14cf11af PM |
616 | config EISA |
617 | bool | |
618 | ||
619 | config SBUS | |
620 | bool | |
621 | ||
08264cbc KG |
622 | config FSL_SOC |
623 | bool | |
624 | ||
55c44991 RZ |
625 | config FSL_PCI |
626 | bool | |
627 | select PPC_INDIRECT_PCI | |
d0839118 | 628 | select PCI_QUIRKS |
55c44991 | 629 | |
2a706919 SR |
630 | config 4xx_SOC |
631 | bool | |
632 | ||
acaa7aa3 AV |
633 | config FSL_LBC |
634 | bool | |
635 | help | |
636 | Freescale Localbus support | |
637 | ||
83ff9dcf AV |
638 | config FSL_GTM |
639 | bool | |
640 | depends on PPC_83xx || QUICC_ENGINE || CPM2 | |
641 | help | |
642 | Freescale General-purpose Timers support | |
643 | ||
14cf11af PM |
644 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
645 | config MCA | |
646 | bool | |
647 | ||
b500563b JR |
648 | # Platforms that what PCI turned unconditionally just do select PCI |
649 | # in their config node. Platforms that want to choose at config | |
650 | # time should select PPC_PCI_CHOICE | |
651 | config PPC_PCI_CHOICE | |
652 | bool | |
653 | ||
14cf11af | 654 | config PCI |
b500563b JR |
655 | bool "PCI support" if PPC_PCI_CHOICE |
656 | default y if !40x && !CPM2 && !8xx && !PPC_83xx \ | |
53158620 | 657 | && !PPC_85xx && !PPC_86xx |
f21f49ea | 658 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx |
14cf11af | 659 | default PCI_QSPAN if !4xx && !CPM2 && 8xx |
df87ef55 | 660 | select ARCH_SUPPORTS_MSI |
14cf11af PM |
661 | help |
662 | Find out whether your system includes a PCI bus. PCI is the name of | |
663 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
664 | your box. If you say Y here, the kernel will include drivers and | |
665 | infrastructure code to support PCI bus devices. | |
666 | ||
667 | config PCI_DOMAINS | |
36e23590 MW |
668 | def_bool PCI |
669 | ||
670 | config PCI_SYSCALL | |
671 | def_bool PCI | |
14cf11af | 672 | |
14cf11af PM |
673 | config PCI_QSPAN |
674 | bool "QSpan PCI" | |
675 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 676 | select PPC_I8259 |
14cf11af PM |
677 | help |
678 | Say Y here if you have a system based on a Motorola 8xx-series | |
679 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
680 | ||
681 | config PCI_8260 | |
682 | bool | |
683 | depends on PCI && 8260 | |
25635c71 | 684 | select PPC_INDIRECT_PCI |
14cf11af PM |
685 | default y |
686 | ||
687 | config 8260_PCI9 | |
4a3ecc62 | 688 | bool "Enable workaround for MPC826x erratum PCI 9" |
e00c5498 | 689 | depends on PCI_8260 && !8272 |
14cf11af PM |
690 | default y |
691 | ||
692 | choice | |
4a3ecc62 | 693 | prompt "IDMA channel for PCI 9 workaround" |
14cf11af PM |
694 | depends on 8260_PCI9 |
695 | ||
696 | config 8260_PCI9_IDMA1 | |
697 | bool "IDMA1" | |
698 | ||
699 | config 8260_PCI9_IDMA2 | |
700 | bool "IDMA2" | |
701 | ||
702 | config 8260_PCI9_IDMA3 | |
703 | bool "IDMA3" | |
704 | ||
705 | config 8260_PCI9_IDMA4 | |
706 | bool "IDMA4" | |
707 | ||
708 | endchoice | |
709 | ||
bb53bb3d JM |
710 | source "drivers/pci/pcie/Kconfig" |
711 | ||
14cf11af PM |
712 | source "drivers/pci/Kconfig" |
713 | ||
714 | source "drivers/pcmcia/Kconfig" | |
715 | ||
716 | source "drivers/pci/hotplug/Kconfig" | |
717 | ||
f1f389d5 ZW |
718 | config HAS_RAPIDIO |
719 | bool | |
720 | default n | |
721 | ||
722 | config RAPIDIO | |
723 | bool "RapidIO support" | |
724 | depends on HAS_RAPIDIO | |
725 | help | |
726 | If you say Y here, the kernel will include drivers and | |
727 | infrastructure code to support RapidIO interconnect devices. | |
728 | ||
729 | source "drivers/rapidio/Kconfig" | |
730 | ||
14cf11af PM |
731 | endmenu |
732 | ||
733 | menu "Advanced setup" | |
734 | depends on PPC32 | |
735 | ||
736 | config ADVANCED_OPTIONS | |
737 | bool "Prompt for advanced kernel configuration options" | |
738 | help | |
739 | This option will enable prompting for a variety of advanced kernel | |
740 | configuration options. These options can cause the kernel to not | |
741 | work if they are set incorrectly, but can be used to optimize certain | |
742 | aspects of kernel memory management. | |
743 | ||
744 | Unless you know what you are doing, say N here. | |
745 | ||
746 | comment "Default settings for advanced configuration options are used" | |
747 | depends on !ADVANCED_OPTIONS | |
748 | ||
14cf11af PM |
749 | config LOWMEM_SIZE_BOOL |
750 | bool "Set maximum low memory" | |
751 | depends on ADVANCED_OPTIONS | |
752 | help | |
753 | This option allows you to set the maximum amount of memory which | |
754 | will be used as "low memory", that is, memory which the kernel can | |
755 | access directly, without having to set up a kernel virtual mapping. | |
756 | This can be useful in optimizing the layout of kernel virtual | |
757 | memory. | |
758 | ||
759 | Say N here unless you know what you are doing. | |
760 | ||
761 | config LOWMEM_SIZE | |
762 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
763 | default "0x30000000" | |
764 | ||
96051465 TP |
765 | config LOWMEM_CAM_NUM_BOOL |
766 | bool "Set number of CAMs to use to map low memory" | |
767 | depends on ADVANCED_OPTIONS && FSL_BOOKE | |
768 | help | |
769 | This option allows you to set the maximum number of CAM slots that | |
770 | will be used to map low memory. There are a limited number of slots | |
771 | available and even more limited number that will fit in the L1 MMU. | |
772 | However, using more entries will allow mapping more low memory. This | |
773 | can be useful in optimizing the layout of kernel virtual memory. | |
774 | ||
775 | Say N here unless you know what you are doing. | |
776 | ||
777 | config LOWMEM_CAM_NUM | |
9b71dbd3 | 778 | depends on FSL_BOOKE |
96051465 TP |
779 | int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL |
780 | default 3 | |
781 | ||
37dd2bad KG |
782 | config RELOCATABLE |
783 | bool "Build a relocatable kernel (EXPERIMENTAL)" | |
784 | depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
785 | help | |
786 | This builds a kernel image that is capable of running at the | |
787 | location the kernel is loaded at (some alignment restrictions may | |
788 | exist). | |
789 | ||
790 | One use is for the kexec on panic case where the recovery kernel | |
791 | must live at a different physical address than the primary | |
792 | kernel. | |
793 | ||
794 | Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address | |
795 | it has been loaded at and the compile time physical addresses | |
796 | CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START | |
797 | setting can still be useful to bootwrappers that need to know the | |
798 | load location of the kernel (eg. u-boot/mkimage). | |
799 | ||
800 | config PAGE_OFFSET_BOOL | |
801 | bool "Set custom page offset address" | |
802 | depends on ADVANCED_OPTIONS | |
803 | help | |
804 | This option allows you to set the kernel virtual address at which | |
805 | the kernel will map low memory. This can be useful in optimizing | |
806 | the virtual memory layout of the system. | |
807 | ||
808 | Say N here unless you know what you are doing. | |
809 | ||
810 | config PAGE_OFFSET | |
811 | hex "Virtual address of memory base" if PAGE_OFFSET_BOOL | |
812 | default "0xc0000000" | |
813 | ||
14cf11af PM |
814 | config KERNEL_START_BOOL |
815 | bool "Set custom kernel base address" | |
816 | depends on ADVANCED_OPTIONS | |
817 | help | |
818 | This option allows you to set the kernel virtual address at which | |
37dd2bad KG |
819 | the kernel will be loaded. Normally this should match PAGE_OFFSET |
820 | however there are times (like kdump) that one might not want them | |
821 | to be the same. | |
14cf11af PM |
822 | |
823 | Say N here unless you know what you are doing. | |
824 | ||
825 | config KERNEL_START | |
826 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
37dd2bad KG |
827 | default PAGE_OFFSET if PAGE_OFFSET_BOOL |
828 | default "0xc2000000" if CRASH_DUMP | |
14cf11af PM |
829 | default "0xc0000000" |
830 | ||
37dd2bad KG |
831 | config PHYSICAL_START_BOOL |
832 | bool "Set physical address where the kernel is loaded" | |
833 | depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
834 | help | |
835 | This gives the physical address where the kernel is loaded. | |
836 | ||
837 | Say N here unless you know what you are doing. | |
838 | ||
839 | config PHYSICAL_START | |
840 | hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL | |
841 | default "0x02000000" if PPC_STD_MMU && CRASH_DUMP | |
842 | default "0x00000000" | |
843 | ||
844 | config PHYSICAL_ALIGN | |
845 | hex | |
c8f3570b | 846 | default "0x04000000" if FSL_BOOKE |
37dd2bad KG |
847 | help |
848 | This value puts the alignment restrictions on physical address | |
849 | where kernel is loaded and run from. Kernel is compiled for an | |
850 | address which meets above alignment restriction. | |
851 | ||
14cf11af PM |
852 | config TASK_SIZE_BOOL |
853 | bool "Set custom user task size" | |
854 | depends on ADVANCED_OPTIONS | |
855 | help | |
856 | This option allows you to set the amount of virtual address space | |
857 | allocated to user tasks. This can be useful in optimizing the | |
858 | virtual memory layout of the system. | |
859 | ||
860 | Say N here unless you know what you are doing. | |
861 | ||
862 | config TASK_SIZE | |
863 | hex "Size of user task space" if TASK_SIZE_BOOL | |
4d9e5510 KG |
864 | default "0x80000000" if PPC_PREP || PPC_8xx |
865 | default "0xc0000000" | |
14cf11af | 866 | |
14cf11af PM |
867 | config PIN_TLB |
868 | bool "Pinned Kernel TLBs (860 ONLY)" | |
869 | depends on ADVANCED_OPTIONS && 8xx | |
870 | endmenu | |
871 | ||
cabb5587 | 872 | if PPC64 |
549e8152 PM |
873 | config RELOCATABLE |
874 | bool "Build a relocatable kernel" | |
875 | help | |
876 | This builds a kernel image that is capable of running anywhere | |
877 | in the RMA (real memory area) at any 16k-aligned base address. | |
878 | The kernel is linked as a position-independent executable (PIE) | |
879 | and contains dynamic relocations which are processed early | |
880 | in the bootup process. | |
881 | ||
882 | One use is for the kexec on panic case where the recovery kernel | |
883 | must live at a different physical address than the primary | |
884 | kernel. | |
885 | ||
37dd2bad KG |
886 | config PAGE_OFFSET |
887 | hex | |
888 | default "0xc000000000000000" | |
cabb5587 SR |
889 | config KERNEL_START |
890 | hex | |
eeb2d218 | 891 | default "0xc000000000000000" |
37dd2bad KG |
892 | config PHYSICAL_START |
893 | hex | |
37dd2bad | 894 | default "0x00000000" |
cabb5587 SR |
895 | endif |
896 | ||
14cf11af PM |
897 | source "net/Kconfig" |
898 | ||
899 | source "drivers/Kconfig" | |
900 | ||
901 | source "fs/Kconfig" | |
902 | ||
98658538 LY |
903 | source "arch/powerpc/sysdev/qe_lib/Kconfig" |
904 | ||
14cf11af PM |
905 | source "lib/Kconfig" |
906 | ||
14cf11af PM |
907 | source "arch/powerpc/Kconfig.debug" |
908 | ||
909 | source "security/Kconfig" | |
910 | ||
911 | config KEYS_COMPAT | |
912 | bool | |
913 | depends on COMPAT && KEYS | |
914 | default y | |
915 | ||
916 | source "crypto/Kconfig" | |
6f668280 DP |
917 | |
918 | config PPC_CLOCK | |
919 | bool | |
920 | default n | |
9483a578 | 921 | select HAVE_CLK |
1088a209 SM |
922 | |
923 | config PPC_LIB_RHEAP | |
924 | bool | |
925 | ||
bbf45ba5 | 926 | source "arch/powerpc/kvm/Kconfig" |