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 |
6794c782 | 114 | select HAVE_FUNCTION_GRAPH_TRACER if !DYNAMIC_FTRACE && PPC64 |
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 | ||
14cf11af PM |
231 | source "init/Kconfig" |
232 | ||
dc52ddc0 MH |
233 | source "kernel/Kconfig.freezer" |
234 | ||
a2d2e1ec | 235 | source "arch/powerpc/sysdev/Kconfig" |
4330f5da | 236 | source "arch/powerpc/platforms/Kconfig" |
14cf11af | 237 | |
14cf11af PM |
238 | menu "Kernel options" |
239 | ||
240 | config HIGHMEM | |
241 | bool "High memory support" | |
242 | depends on PPC32 | |
243 | ||
1ad74998 | 244 | source kernel/time/Kconfig |
14cf11af PM |
245 | source kernel/Kconfig.hz |
246 | source kernel/Kconfig.preempt | |
247 | source "fs/Kconfig.binfmt" | |
248 | ||
ba72cb8c MG |
249 | config HUGETLB_PAGE_SIZE_VARIABLE |
250 | bool | |
251 | depends on HUGETLB_PAGE | |
252 | default y | |
253 | ||
14cf11af PM |
254 | config MATH_EMULATION |
255 | bool "Math emulation" | |
4d52719a | 256 | depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 |
14cf11af PM |
257 | ---help--- |
258 | Some PowerPC chips designed for embedded applications do not have | |
259 | a floating-point unit and therefore do not implement the | |
260 | floating-point instructions in the PowerPC instruction set. If you | |
261 | say Y here, the kernel will include code to emulate a floating-point | |
262 | unit, which will allow programs that use floating-point | |
263 | instructions to run. | |
264 | ||
5dd57a13 SW |
265 | config 8XX_MINIMAL_FPEMU |
266 | bool "Minimal math emulation for 8xx" | |
267 | depends on 8xx && !MATH_EMULATION | |
268 | help | |
269 | Older arch/ppc kernels still emulated a few floating point | |
270 | instructions such as load and store, even when full math | |
271 | emulation is disabled. Say "Y" here if you want to preserve | |
272 | this behavior. | |
273 | ||
274 | It is recommended that you build a soft-float userspace instead. | |
275 | ||
14cf11af | 276 | config IOMMU_VMERGE |
768cc2d3 LV |
277 | bool "Enable IOMMU virtual merging" |
278 | depends on PPC64 | |
279 | default y | |
14cf11af PM |
280 | help |
281 | Cause IO segments sent to a device for DMA to be merged virtually | |
282 | by the IOMMU when they happen to have been allocated contiguously. | |
283 | This doesn't add pressure to the IOMMU allocator. However, some | |
284 | drivers don't support getting large merged segments coming back | |
768cc2d3 LV |
285 | from *_map_sg(). |
286 | ||
287 | Most drivers don't have this problem; it is safe to say Y here. | |
14cf11af | 288 | |
fb3475e9 FT |
289 | config IOMMU_HELPER |
290 | def_bool PPC64 | |
291 | ||
15e09c0e BB |
292 | config PPC_NEED_DMA_SYNC_OPS |
293 | def_bool y | |
294 | depends on NOT_COHERENT_CACHE | |
295 | ||
14cf11af PM |
296 | config HOTPLUG_CPU |
297 | bool "Support for enabling/disabling CPUs" | |
298 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) | |
299 | ---help--- | |
300 | Say Y here to be able to disable and re-enable individual | |
301 | CPUs at runtime on SMP machines. | |
302 | ||
303 | Say N if you are unsure. | |
304 | ||
cc57637b YG |
305 | config ARCH_ENABLE_MEMORY_HOTPLUG |
306 | def_bool y | |
307 | ||
a99824f3 BP |
308 | config ARCH_HAS_WALK_MEMORY |
309 | def_bool y | |
310 | ||
1482471d BP |
311 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
312 | def_bool y | |
313 | ||
14cf11af PM |
314 | config KEXEC |
315 | bool "kexec system call (EXPERIMENTAL)" | |
fd4ba7e2 | 316 | depends on (PPC_PRPMC2800 || PPC_MULTIPLATFORM) && EXPERIMENTAL |
14cf11af PM |
317 | help |
318 | kexec is a system call that implements the ability to shutdown your | |
319 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 320 | but it is independent of the system firmware. And like a reboot |
14cf11af PM |
321 | you can start any kernel with it, not just Linux. |
322 | ||
1f1332f7 | 323 | The name comes from the similarity to the exec system call. |
14cf11af PM |
324 | |
325 | It is an ongoing process to be certain the hardware in a machine | |
326 | is properly shutdown, so do not be surprised if this code does not | |
327 | initially work for you. It may help to enable device hotplugging | |
328 | support. As of this writing the exact hardware interface is | |
329 | strongly in flux, so no good recommendation can be made. | |
330 | ||
e8625d46 | 331 | config CRASH_DUMP |
3420b5da | 332 | bool "Build a kdump crash kernel" |
c6ac71a1 MK |
333 | depends on PPC64 || 6xx |
334 | select RELOCATABLE if PPC64 | |
e8625d46 HM |
335 | help |
336 | Build a kernel suitable for use as a kdump capture kernel. | |
54622f10 MK |
337 | The same kernel binary can be used as production kernel and dump |
338 | capture kernel. | |
e8625d46 | 339 | |
242f271c MA |
340 | config PHYP_DUMP |
341 | bool "Hypervisor-assisted dump (EXPERIMENTAL)" | |
342 | depends on PPC_PSERIES && EXPERIMENTAL | |
343 | help | |
344 | Hypervisor-assisted dump is meant to be a kdump replacement | |
345 | offering robustness and speed not possible without system | |
346 | hypervisor assistence. | |
347 | ||
348 | If unsure, say "N" | |
349 | ||
14cf11af PM |
350 | config PPCBUG_NVRAM |
351 | bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC | |
352 | default y if PPC_PREP | |
353 | ||
354 | config IRQ_ALL_CPUS | |
355 | bool "Distribute interrupts on all CPUs by default" | |
356 | depends on SMP && !MV64360 | |
357 | help | |
358 | This option gives the kernel permission to distribute IRQs across | |
359 | multiple CPUs. Saying N here will route all IRQs to the first | |
360 | CPU. Generally saying Y is safe, although some problems have been | |
361 | reported with SMP Power Macintoshes with this option enabled. | |
362 | ||
ffa27b6b AW |
363 | config NUMA |
364 | bool "NUMA support" | |
365 | depends on PPC64 | |
366 | default y if SMP && PPC_PSERIES | |
367 | ||
c80d79d7 YG |
368 | config NODES_SHIFT |
369 | int | |
370 | default "4" | |
371 | depends on NEED_MULTIPLE_NODES | |
372 | ||
14cf11af PM |
373 | config ARCH_SELECT_MEMORY_MODEL |
374 | def_bool y | |
375 | depends on PPC64 | |
376 | ||
377 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
378 | def_bool y |
379 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 380 | |
45fb6cea | 381 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 382 | def_bool y |
9100b205 | 383 | depends on PPC64 |
d29eff7b | 384 | select SPARSEMEM_VMEMMAP_ENABLE |
14cf11af | 385 | |
45fb6cea | 386 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 387 | def_bool y |
78bde53e | 388 | depends on (SMP && PPC_PSERIES) || PPC_PS3 |
14cf11af | 389 | |
c67c3cb4 | 390 | config ARCH_POPULATES_NODE_MAP |
14cf11af | 391 | def_bool y |
c67c3cb4 MG |
392 | |
393 | source "mm/Kconfig" | |
14cf11af | 394 | |
7e9191da MK |
395 | config ARCH_MEMORY_PROBE |
396 | def_bool y | |
397 | depends on MEMORY_HOTPLUG | |
398 | ||
75167957 AW |
399 | # Some NUMA nodes have memory ranges that span |
400 | # other nodes. Even though a pfn is valid and | |
401 | # between a node's start and end pfns, it may not | |
402 | # reside on that node. See memmap_init_zone() | |
403 | # for details. | |
404 | config NODES_SPAN_OTHER_NODES | |
405 | def_bool y | |
406 | depends on NEED_MULTIPLE_NODES | |
407 | ||
16c2d476 BH |
408 | config PPC_HAS_HASH_64K |
409 | bool | |
410 | depends on PPC64 | |
411 | default n | |
412 | ||
ca9153a3 IY |
413 | choice |
414 | prompt "Page size" | |
415 | default PPC_4K_PAGES | |
3c726f8d | 416 | help |
ca9153a3 IY |
417 | Select the kernel logical page size. Increasing the page size |
418 | will reduce software overhead at each page boundary, allow | |
419 | hardware prefetch mechanisms to be more effective, and allow | |
420 | larger dma transfers increasing IO efficiency and reducing | |
421 | overhead. However the utilization of memory will increase. | |
422 | For example, each cached file will using a multiple of the | |
423 | page size to hold its contents and the difference between the | |
424 | end of file and the end of page is wasted. | |
425 | ||
426 | Some dedicated systems, such as software raid serving with | |
427 | accelerated calculations, have shown significant increases. | |
428 | ||
429 | If you configure a 64 bit kernel for 64k pages but the | |
430 | processor does not support them, then the kernel will simulate | |
431 | them with 4k pages, loading them on demand, but with the | |
432 | reduced software overhead and larger internal fragmentation. | |
433 | For the 32 bit kernel, a large page option will not be offered | |
434 | unless it is supported by the configured processor. | |
435 | ||
436 | If unsure, choose 4K_PAGES. | |
437 | ||
438 | config PPC_4K_PAGES | |
439 | bool "4k page size" | |
440 | ||
441 | config PPC_16K_PAGES | |
442 | bool "16k page size" if 44x | |
443 | ||
444 | config PPC_64K_PAGES | |
445 | bool "64k page size" if 44x || PPC_STD_MMU_64 | |
446 | select PPC_HAS_HASH_64K if PPC_STD_MMU_64 | |
447 | ||
448 | endchoice | |
3c726f8d | 449 | |
53bcddb9 SR |
450 | config FORCE_MAX_ZONEORDER |
451 | int "Maximum zone order" | |
ca9153a3 IY |
452 | range 9 64 if PPC_STD_MMU_64 && PPC_64K_PAGES |
453 | default "9" if PPC_STD_MMU_64 && PPC_64K_PAGES | |
454 | range 13 64 if PPC_STD_MMU_64 && !PPC_64K_PAGES | |
455 | default "13" if PPC_STD_MMU_64 && !PPC_64K_PAGES | |
456 | range 9 64 if PPC_STD_MMU_32 && PPC_16K_PAGES | |
457 | default "9" if PPC_STD_MMU_32 && PPC_16K_PAGES | |
458 | range 7 64 if PPC_STD_MMU_32 && PPC_64K_PAGES | |
459 | default "7" if PPC_STD_MMU_32 && PPC_64K_PAGES | |
ebe40c5c | 460 | range 11 64 |
53bcddb9 SR |
461 | default "11" |
462 | help | |
463 | The kernel memory allocator divides physically contiguous memory | |
464 | blocks into "zones", where each zone is a power of two number of | |
465 | pages. This option selects the largest power of two that the kernel | |
466 | keeps in the memory allocator. If you need to allocate very large | |
467 | blocks of physically contiguous memory, then you may need to | |
468 | increase this value. | |
469 | ||
470 | This config option is actually maximum order plus one. For example, | |
471 | a value of 11 means that the largest free memory block is 2^10 pages. | |
472 | ||
473 | The page size is not necessarily 4KB. For example, on 64-bit | |
474 | systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep | |
475 | this in mind when choosing a value for this option. | |
476 | ||
fa28237c PM |
477 | config PPC_SUBPAGE_PROT |
478 | bool "Support setting protections for 4k subpages" | |
ca9153a3 | 479 | depends on PPC_STD_MMU_64 && PPC_64K_PAGES |
fa28237c PM |
480 | help |
481 | This option adds support for a system call to allow user programs | |
482 | to set access permissions (read/write, readonly, or no access) | |
483 | on the 4k subpages of each 64k page. | |
484 | ||
14cf11af PM |
485 | config SCHED_SMT |
486 | bool "SMT (Hyperthreading) scheduler support" | |
487 | depends on PPC64 && SMP | |
14cf11af PM |
488 | help |
489 | SMT scheduler support improves the CPU scheduler's decision making | |
490 | when dealing with POWER5 cpus at a cost of slightly increased | |
491 | overhead in some places. If unsure say N here. | |
492 | ||
493 | config PROC_DEVICETREE | |
5f296755 PM |
494 | bool "Support for device tree in /proc" |
495 | depends on PROC_FS | |
14cf11af PM |
496 | help |
497 | This option adds a device-tree directory under /proc which contains | |
498 | an image of the device tree that the kernel copies from Open | |
5f296755 | 499 | Firmware or other boot firmware. If unsure, say Y here. |
14cf11af | 500 | |
14cf11af PM |
501 | config CMDLINE_BOOL |
502 | bool "Default bootloader kernel arguments" | |
14cf11af PM |
503 | |
504 | config CMDLINE | |
505 | string "Initial kernel command string" | |
506 | depends on CMDLINE_BOOL | |
507 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
508 | help | |
509 | On some platforms, there is currently no way for the boot loader to | |
510 | pass arguments to the kernel. For these platforms, you can supply | |
511 | some command-line options at build time by entering them here. In | |
512 | most cases you will need to specify the root device here. | |
513 | ||
c356aa45 GL |
514 | config EXTRA_TARGETS |
515 | string "Additional default image types" | |
516 | help | |
517 | List additional targets to be built by the bootwrapper here (separated | |
518 | by spaces). This is useful for targets that depend of device tree | |
519 | files in the .dts directory. | |
520 | ||
521 | Targets in this list will be build as part of the default build | |
522 | target, or when the user does a 'make zImage' or a | |
523 | 'make zImage.initrd'. | |
524 | ||
525 | If unsure, leave blank | |
526 | ||
14cf11af | 527 | if !44x || BROKEN |
b28f5081 JB |
528 | config ARCH_WANTS_FREEZER_CONTROL |
529 | def_bool y | |
530 | depends on ADB_PMU | |
531 | ||
14cf11af PM |
532 | source kernel/power/Kconfig |
533 | endif | |
534 | ||
535 | config SECCOMP | |
536 | bool "Enable seccomp to safely compute untrusted bytecode" | |
537 | depends on PROC_FS | |
538 | default y | |
539 | help | |
540 | This kernel feature is useful for number crunching applications | |
541 | that may need to compute untrusted bytecode during their | |
542 | execution. By using pipes or other transports made available to | |
543 | the process as file descriptors supporting the read/write | |
544 | syscalls, it's possible to isolate those applications in | |
545 | their own address space using seccomp. Once seccomp is | |
546 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
547 | and the task is only allowed to execute a few safe syscalls | |
548 | defined by each seccomp mode. | |
549 | ||
550 | If unsure, say Y. Only embedded should say N here. | |
551 | ||
552 | endmenu | |
553 | ||
554 | config ISA_DMA_API | |
555 | bool | |
373a6da1 | 556 | default !PPC_ISERIES || PCI |
14cf11af PM |
557 | |
558 | menu "Bus options" | |
559 | ||
560 | config ISA | |
561 | bool "Support for ISA-bus hardware" | |
562 | depends on PPC_PREP || PPC_CHRP | |
f9bd170a | 563 | select PPC_I8259 |
14cf11af PM |
564 | help |
565 | Find out whether you have ISA slots on your motherboard. ISA is the | |
566 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
567 | inside your box. If you have an Apple machine, say N here; if you | |
568 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If | |
569 | you have an embedded board, consult your board documentation. | |
570 | ||
5ac6da66 CL |
571 | config ZONE_DMA |
572 | bool | |
573 | default y | |
574 | ||
14cf11af PM |
575 | config GENERIC_ISA_DMA |
576 | bool | |
577 | depends on PPC64 || POWER4 || 6xx && !CPM2 | |
578 | default y | |
579 | ||
25635c71 PM |
580 | config PPC_INDIRECT_PCI |
581 | bool | |
582 | depends on PCI | |
63dafe57 | 583 | default y if 40x || 44x |
25635c71 PM |
584 | default n |
585 | ||
14cf11af PM |
586 | config EISA |
587 | bool | |
588 | ||
589 | config SBUS | |
590 | bool | |
591 | ||
08264cbc KG |
592 | config FSL_SOC |
593 | bool | |
594 | ||
55c44991 RZ |
595 | config FSL_PCI |
596 | bool | |
597 | select PPC_INDIRECT_PCI | |
d0839118 | 598 | select PCI_QUIRKS |
55c44991 | 599 | |
2a706919 SR |
600 | config 4xx_SOC |
601 | bool | |
602 | ||
acaa7aa3 AV |
603 | config FSL_LBC |
604 | bool | |
605 | help | |
606 | Freescale Localbus support | |
607 | ||
83ff9dcf AV |
608 | config FSL_GTM |
609 | bool | |
610 | depends on PPC_83xx || QUICC_ENGINE || CPM2 | |
611 | help | |
612 | Freescale General-purpose Timers support | |
613 | ||
14cf11af PM |
614 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
615 | config MCA | |
616 | bool | |
617 | ||
b500563b JR |
618 | # Platforms that what PCI turned unconditionally just do select PCI |
619 | # in their config node. Platforms that want to choose at config | |
620 | # time should select PPC_PCI_CHOICE | |
621 | config PPC_PCI_CHOICE | |
622 | bool | |
623 | ||
14cf11af | 624 | config PCI |
b500563b JR |
625 | bool "PCI support" if PPC_PCI_CHOICE |
626 | default y if !40x && !CPM2 && !8xx && !PPC_83xx \ | |
53158620 | 627 | && !PPC_85xx && !PPC_86xx |
f21f49ea | 628 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx |
14cf11af | 629 | default PCI_QSPAN if !4xx && !CPM2 && 8xx |
df87ef55 | 630 | select ARCH_SUPPORTS_MSI |
14cf11af PM |
631 | help |
632 | Find out whether your system includes a PCI bus. PCI is the name of | |
633 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
634 | your box. If you say Y here, the kernel will include drivers and | |
635 | infrastructure code to support PCI bus devices. | |
636 | ||
637 | config PCI_DOMAINS | |
36e23590 MW |
638 | def_bool PCI |
639 | ||
640 | config PCI_SYSCALL | |
641 | def_bool PCI | |
14cf11af | 642 | |
14cf11af PM |
643 | config PCI_QSPAN |
644 | bool "QSpan PCI" | |
645 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 646 | select PPC_I8259 |
14cf11af PM |
647 | help |
648 | Say Y here if you have a system based on a Motorola 8xx-series | |
649 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
650 | ||
651 | config PCI_8260 | |
652 | bool | |
653 | depends on PCI && 8260 | |
25635c71 | 654 | select PPC_INDIRECT_PCI |
14cf11af PM |
655 | default y |
656 | ||
657 | config 8260_PCI9 | |
4a3ecc62 | 658 | bool "Enable workaround for MPC826x erratum PCI 9" |
e00c5498 | 659 | depends on PCI_8260 && !8272 |
14cf11af PM |
660 | default y |
661 | ||
662 | choice | |
4a3ecc62 | 663 | prompt "IDMA channel for PCI 9 workaround" |
14cf11af PM |
664 | depends on 8260_PCI9 |
665 | ||
666 | config 8260_PCI9_IDMA1 | |
667 | bool "IDMA1" | |
668 | ||
669 | config 8260_PCI9_IDMA2 | |
670 | bool "IDMA2" | |
671 | ||
672 | config 8260_PCI9_IDMA3 | |
673 | bool "IDMA3" | |
674 | ||
675 | config 8260_PCI9_IDMA4 | |
676 | bool "IDMA4" | |
677 | ||
678 | endchoice | |
679 | ||
bb53bb3d JM |
680 | source "drivers/pci/pcie/Kconfig" |
681 | ||
14cf11af PM |
682 | source "drivers/pci/Kconfig" |
683 | ||
684 | source "drivers/pcmcia/Kconfig" | |
685 | ||
686 | source "drivers/pci/hotplug/Kconfig" | |
687 | ||
f1f389d5 ZW |
688 | config HAS_RAPIDIO |
689 | bool | |
690 | default n | |
691 | ||
692 | config RAPIDIO | |
693 | bool "RapidIO support" | |
694 | depends on HAS_RAPIDIO | |
695 | help | |
696 | If you say Y here, the kernel will include drivers and | |
697 | infrastructure code to support RapidIO interconnect devices. | |
698 | ||
699 | source "drivers/rapidio/Kconfig" | |
700 | ||
14cf11af PM |
701 | endmenu |
702 | ||
703 | menu "Advanced setup" | |
704 | depends on PPC32 | |
705 | ||
706 | config ADVANCED_OPTIONS | |
707 | bool "Prompt for advanced kernel configuration options" | |
708 | help | |
709 | This option will enable prompting for a variety of advanced kernel | |
710 | configuration options. These options can cause the kernel to not | |
711 | work if they are set incorrectly, but can be used to optimize certain | |
712 | aspects of kernel memory management. | |
713 | ||
714 | Unless you know what you are doing, say N here. | |
715 | ||
716 | comment "Default settings for advanced configuration options are used" | |
717 | depends on !ADVANCED_OPTIONS | |
718 | ||
14cf11af PM |
719 | config LOWMEM_SIZE_BOOL |
720 | bool "Set maximum low memory" | |
721 | depends on ADVANCED_OPTIONS | |
722 | help | |
723 | This option allows you to set the maximum amount of memory which | |
724 | will be used as "low memory", that is, memory which the kernel can | |
725 | access directly, without having to set up a kernel virtual mapping. | |
726 | This can be useful in optimizing the layout of kernel virtual | |
727 | memory. | |
728 | ||
729 | Say N here unless you know what you are doing. | |
730 | ||
731 | config LOWMEM_SIZE | |
732 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
733 | default "0x30000000" | |
734 | ||
96051465 TP |
735 | config LOWMEM_CAM_NUM_BOOL |
736 | bool "Set number of CAMs to use to map low memory" | |
737 | depends on ADVANCED_OPTIONS && FSL_BOOKE | |
738 | help | |
739 | This option allows you to set the maximum number of CAM slots that | |
740 | will be used to map low memory. There are a limited number of slots | |
741 | available and even more limited number that will fit in the L1 MMU. | |
742 | However, using more entries will allow mapping more low memory. This | |
743 | can be useful in optimizing the layout of kernel virtual memory. | |
744 | ||
745 | Say N here unless you know what you are doing. | |
746 | ||
747 | config LOWMEM_CAM_NUM | |
748 | int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL | |
749 | default 3 | |
750 | ||
37dd2bad KG |
751 | config RELOCATABLE |
752 | bool "Build a relocatable kernel (EXPERIMENTAL)" | |
753 | depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
754 | help | |
755 | This builds a kernel image that is capable of running at the | |
756 | location the kernel is loaded at (some alignment restrictions may | |
757 | exist). | |
758 | ||
759 | One use is for the kexec on panic case where the recovery kernel | |
760 | must live at a different physical address than the primary | |
761 | kernel. | |
762 | ||
763 | Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address | |
764 | it has been loaded at and the compile time physical addresses | |
765 | CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START | |
766 | setting can still be useful to bootwrappers that need to know the | |
767 | load location of the kernel (eg. u-boot/mkimage). | |
768 | ||
769 | config PAGE_OFFSET_BOOL | |
770 | bool "Set custom page offset address" | |
771 | depends on ADVANCED_OPTIONS | |
772 | help | |
773 | This option allows you to set the kernel virtual address at which | |
774 | the kernel will map low memory. This can be useful in optimizing | |
775 | the virtual memory layout of the system. | |
776 | ||
777 | Say N here unless you know what you are doing. | |
778 | ||
779 | config PAGE_OFFSET | |
780 | hex "Virtual address of memory base" if PAGE_OFFSET_BOOL | |
781 | default "0xc0000000" | |
782 | ||
14cf11af PM |
783 | config KERNEL_START_BOOL |
784 | bool "Set custom kernel base address" | |
785 | depends on ADVANCED_OPTIONS | |
786 | help | |
787 | This option allows you to set the kernel virtual address at which | |
37dd2bad KG |
788 | the kernel will be loaded. Normally this should match PAGE_OFFSET |
789 | however there are times (like kdump) that one might not want them | |
790 | to be the same. | |
14cf11af PM |
791 | |
792 | Say N here unless you know what you are doing. | |
793 | ||
794 | config KERNEL_START | |
795 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
37dd2bad KG |
796 | default PAGE_OFFSET if PAGE_OFFSET_BOOL |
797 | default "0xc2000000" if CRASH_DUMP | |
14cf11af PM |
798 | default "0xc0000000" |
799 | ||
37dd2bad KG |
800 | config PHYSICAL_START_BOOL |
801 | bool "Set physical address where the kernel is loaded" | |
802 | depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
803 | help | |
804 | This gives the physical address where the kernel is loaded. | |
805 | ||
806 | Say N here unless you know what you are doing. | |
807 | ||
808 | config PHYSICAL_START | |
809 | hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL | |
810 | default "0x02000000" if PPC_STD_MMU && CRASH_DUMP | |
811 | default "0x00000000" | |
812 | ||
813 | config PHYSICAL_ALIGN | |
814 | hex | |
c8f3570b | 815 | default "0x04000000" if FSL_BOOKE |
37dd2bad KG |
816 | help |
817 | This value puts the alignment restrictions on physical address | |
818 | where kernel is loaded and run from. Kernel is compiled for an | |
819 | address which meets above alignment restriction. | |
820 | ||
14cf11af PM |
821 | config TASK_SIZE_BOOL |
822 | bool "Set custom user task size" | |
823 | depends on ADVANCED_OPTIONS | |
824 | help | |
825 | This option allows you to set the amount of virtual address space | |
826 | allocated to user tasks. This can be useful in optimizing the | |
827 | virtual memory layout of the system. | |
828 | ||
829 | Say N here unless you know what you are doing. | |
830 | ||
831 | config TASK_SIZE | |
832 | hex "Size of user task space" if TASK_SIZE_BOOL | |
4d9e5510 KG |
833 | default "0x80000000" if PPC_PREP || PPC_8xx |
834 | default "0xc0000000" | |
14cf11af PM |
835 | |
836 | config CONSISTENT_START_BOOL | |
837 | bool "Set custom consistent memory pool address" | |
838 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
839 | help | |
840 | This option allows you to set the base virtual address | |
4b3f686d | 841 | of the consistent memory pool. This pool of virtual |
14cf11af PM |
842 | memory is used to make consistent memory allocations. |
843 | ||
844 | config CONSISTENT_START | |
845 | hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL | |
ccf0d68e | 846 | default "0xfd000000" if (NOT_COHERENT_CACHE && 8xx) |
14cf11af PM |
847 | default "0xff100000" if NOT_COHERENT_CACHE |
848 | ||
849 | config CONSISTENT_SIZE_BOOL | |
850 | bool "Set custom consistent memory pool size" | |
851 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
852 | help | |
4b3f686d | 853 | This option allows you to set the size of the |
14cf11af PM |
854 | consistent memory pool. This pool of virtual memory |
855 | is used to make consistent memory allocations. | |
856 | ||
857 | config CONSISTENT_SIZE | |
858 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
859 | default "0x00200000" if NOT_COHERENT_CACHE | |
860 | ||
14cf11af PM |
861 | config PIN_TLB |
862 | bool "Pinned Kernel TLBs (860 ONLY)" | |
863 | depends on ADVANCED_OPTIONS && 8xx | |
864 | endmenu | |
865 | ||
cabb5587 | 866 | if PPC64 |
549e8152 PM |
867 | config RELOCATABLE |
868 | bool "Build a relocatable kernel" | |
869 | help | |
870 | This builds a kernel image that is capable of running anywhere | |
871 | in the RMA (real memory area) at any 16k-aligned base address. | |
872 | The kernel is linked as a position-independent executable (PIE) | |
873 | and contains dynamic relocations which are processed early | |
874 | in the bootup process. | |
875 | ||
876 | One use is for the kexec on panic case where the recovery kernel | |
877 | must live at a different physical address than the primary | |
878 | kernel. | |
879 | ||
37dd2bad KG |
880 | config PAGE_OFFSET |
881 | hex | |
882 | default "0xc000000000000000" | |
cabb5587 SR |
883 | config KERNEL_START |
884 | hex | |
eeb2d218 | 885 | default "0xc000000000000000" |
37dd2bad KG |
886 | config PHYSICAL_START |
887 | hex | |
37dd2bad | 888 | default "0x00000000" |
cabb5587 SR |
889 | endif |
890 | ||
14cf11af PM |
891 | source "net/Kconfig" |
892 | ||
893 | source "drivers/Kconfig" | |
894 | ||
895 | source "fs/Kconfig" | |
896 | ||
98658538 LY |
897 | source "arch/powerpc/sysdev/qe_lib/Kconfig" |
898 | ||
14cf11af PM |
899 | source "lib/Kconfig" |
900 | ||
14cf11af PM |
901 | source "arch/powerpc/Kconfig.debug" |
902 | ||
903 | source "security/Kconfig" | |
904 | ||
905 | config KEYS_COMPAT | |
906 | bool | |
907 | depends on COMPAT && KEYS | |
908 | default y | |
909 | ||
910 | source "crypto/Kconfig" | |
6f668280 DP |
911 | |
912 | config PPC_CLOCK | |
913 | bool | |
914 | default n | |
9483a578 | 915 | select HAVE_CLK |
1088a209 SM |
916 | |
917 | config PPC_LIB_RHEAP | |
918 | bool | |
919 | ||
bbf45ba5 | 920 | source "arch/powerpc/kvm/Kconfig" |