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 | ||
14cf11af PM |
22 | config PPC_MERGE |
23 | def_bool y | |
24 | ||
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 | ||
14cf11af PM |
52 | config RWSEM_GENERIC_SPINLOCK |
53 | bool | |
54 | ||
55 | config RWSEM_XCHGADD_ALGORITHM | |
56 | bool | |
57 | default y | |
58 | ||
95c354fe NP |
59 | config GENERIC_LOCKBREAK |
60 | bool | |
61 | default y | |
62 | depends on SMP && PREEMPT | |
63 | ||
f0d1b0b3 DH |
64 | config ARCH_HAS_ILOG2_U32 |
65 | bool | |
ef55d53c | 66 | default y |
f0d1b0b3 DH |
67 | |
68 | config ARCH_HAS_ILOG2_U64 | |
69 | bool | |
ef55d53c | 70 | default y if 64BIT |
f0d1b0b3 | 71 | |
e779b2f9 AM |
72 | config GENERIC_HWEIGHT |
73 | bool | |
74 | default y | |
75 | ||
14cf11af PM |
76 | config GENERIC_CALIBRATE_DELAY |
77 | bool | |
78 | default y | |
79 | ||
0a9cb46a JM |
80 | config GENERIC_FIND_NEXT_BIT |
81 | bool | |
82 | default y | |
83 | ||
f057eac0 SR |
84 | config ARCH_NO_VIRT_TO_BUS |
85 | def_bool PPC64 | |
86 | ||
14cf11af PM |
87 | config PPC |
88 | bool | |
89 | default y | |
42d4b839 | 90 | select HAVE_OPROFILE |
14cf11af PM |
91 | |
92 | config EARLY_PRINTK | |
93 | bool | |
51d3082f | 94 | default y |
14cf11af PM |
95 | |
96 | config COMPAT | |
97 | bool | |
98 | default y if PPC64 | |
99 | ||
100 | config SYSVIPC_COMPAT | |
101 | bool | |
102 | depends on COMPAT && SYSVIPC | |
103 | default y | |
104 | ||
105 | # All PPC32s use generic nvram driver through ppc_md | |
106 | config GENERIC_NVRAM | |
107 | bool | |
108 | default y if PPC32 | |
109 | ||
110 | config SCHED_NO_NO_OMIT_FRAME_POINTER | |
111 | bool | |
112 | default y | |
113 | ||
114 | config ARCH_MAY_HAVE_PC_FDC | |
115 | bool | |
bed59275 | 116 | default !PPC_PSERIES || PCI |
14cf11af | 117 | |
08264cbc KG |
118 | config PPC_OF |
119 | def_bool y | |
120 | ||
97e873e5 SR |
121 | config OF |
122 | def_bool y | |
123 | ||
08264cbc KG |
124 | config PPC_UDBG_16550 |
125 | bool | |
126 | default n | |
127 | ||
08264cbc KG |
128 | config GENERIC_TBSYNC |
129 | bool | |
130 | default y if PPC32 && SMP | |
131 | default n | |
132 | ||
e65e1fc2 AV |
133 | config AUDIT_ARCH |
134 | bool | |
135 | default y | |
136 | ||
73c9ceab JF |
137 | config GENERIC_BUG |
138 | bool | |
139 | default y | |
140 | depends on BUG | |
141 | ||
b3028878 | 142 | config SYS_SUPPORTS_APM_EMULATION |
58da10bb | 143 | default y if PMAC_APM_EMU |
b3028878 JB |
144 | bool |
145 | ||
f4fc4a5b KG |
146 | config DEFAULT_UIMAGE |
147 | bool | |
148 | help | |
149 | Used to allow a board to specify it wants a uImage built by default | |
150 | default n | |
151 | ||
b09c1644 SW |
152 | config REDBOOT |
153 | bool | |
154 | ||
801e4062 | 155 | config HIBERNATE_32 |
543b9fd3 | 156 | bool |
801e4062 JB |
157 | depends on (PPC_PMAC && !SMP) || BROKEN |
158 | default y | |
159 | ||
160 | config HIBERNATE_64 | |
161 | bool | |
162 | depends on BROKEN || (PPC_PMAC64 && EXPERIMENTAL) | |
163 | default y | |
164 | ||
165 | config ARCH_HIBERNATION_POSSIBLE | |
166 | bool | |
167 | depends on (PPC64 && HIBERNATE_64) || (PPC32 && HIBERNATE_32) | |
543b9fd3 JB |
168 | default y |
169 | ||
f4cb5700 JB |
170 | config ARCH_SUSPEND_POSSIBLE |
171 | def_bool y | |
172 | depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 | |
173 | ||
4c75a6f4 BH |
174 | config PPC_DCR_NATIVE |
175 | bool | |
176 | default n | |
177 | ||
178 | config PPC_DCR_MMIO | |
179 | bool | |
180 | default n | |
181 | ||
182 | config PPC_DCR | |
183 | bool | |
184 | depends on PPC_DCR_NATIVE || PPC_DCR_MMIO | |
185 | default y | |
186 | ||
4c9d2800 BH |
187 | config PPC_OF_PLATFORM_PCI |
188 | bool | |
373a6da1 | 189 | depends on PCI |
4c9d2800 BH |
190 | depends on PPC64 # not supported on 32 bits yet |
191 | default n | |
192 | ||
14cf11af PM |
193 | source "init/Kconfig" |
194 | ||
a2d2e1ec | 195 | source "arch/powerpc/sysdev/Kconfig" |
4330f5da | 196 | source "arch/powerpc/platforms/Kconfig" |
14cf11af | 197 | |
14cf11af PM |
198 | menu "Kernel options" |
199 | ||
200 | config HIGHMEM | |
201 | bool "High memory support" | |
202 | depends on PPC32 | |
203 | ||
1ad74998 | 204 | source kernel/time/Kconfig |
14cf11af PM |
205 | source kernel/Kconfig.hz |
206 | source kernel/Kconfig.preempt | |
207 | source "fs/Kconfig.binfmt" | |
208 | ||
209 | # We optimistically allocate largepages from the VM, so make the limit | |
210 | # large enough (16MB). This badly named config option is actually | |
211 | # max order + 1 | |
212 | config FORCE_MAX_ZONEORDER | |
213 | int | |
214 | depends on PPC64 | |
02864867 | 215 | default "9" if PPC_64K_PAGES |
14cf11af PM |
216 | default "13" |
217 | ||
ba72cb8c MG |
218 | config HUGETLB_PAGE_SIZE_VARIABLE |
219 | bool | |
220 | depends on HUGETLB_PAGE | |
221 | default y | |
222 | ||
14cf11af PM |
223 | config MATH_EMULATION |
224 | bool "Math emulation" | |
4d52719a | 225 | depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 |
14cf11af PM |
226 | ---help--- |
227 | Some PowerPC chips designed for embedded applications do not have | |
228 | a floating-point unit and therefore do not implement the | |
229 | floating-point instructions in the PowerPC instruction set. If you | |
230 | say Y here, the kernel will include code to emulate a floating-point | |
231 | unit, which will allow programs that use floating-point | |
232 | instructions to run. | |
233 | ||
5dd57a13 SW |
234 | config 8XX_MINIMAL_FPEMU |
235 | bool "Minimal math emulation for 8xx" | |
236 | depends on 8xx && !MATH_EMULATION | |
237 | help | |
238 | Older arch/ppc kernels still emulated a few floating point | |
239 | instructions such as load and store, even when full math | |
240 | emulation is disabled. Say "Y" here if you want to preserve | |
241 | this behavior. | |
242 | ||
243 | It is recommended that you build a soft-float userspace instead. | |
244 | ||
14cf11af | 245 | config IOMMU_VMERGE |
768cc2d3 LV |
246 | bool "Enable IOMMU virtual merging" |
247 | depends on PPC64 | |
248 | default y | |
14cf11af PM |
249 | help |
250 | Cause IO segments sent to a device for DMA to be merged virtually | |
251 | by the IOMMU when they happen to have been allocated contiguously. | |
252 | This doesn't add pressure to the IOMMU allocator. However, some | |
253 | drivers don't support getting large merged segments coming back | |
768cc2d3 LV |
254 | from *_map_sg(). |
255 | ||
256 | Most drivers don't have this problem; it is safe to say Y here. | |
14cf11af PM |
257 | |
258 | config HOTPLUG_CPU | |
259 | bool "Support for enabling/disabling CPUs" | |
260 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) | |
261 | ---help--- | |
262 | Say Y here to be able to disable and re-enable individual | |
263 | CPUs at runtime on SMP machines. | |
264 | ||
265 | Say N if you are unsure. | |
266 | ||
cc57637b YG |
267 | config ARCH_ENABLE_MEMORY_HOTPLUG |
268 | def_bool y | |
269 | ||
14cf11af PM |
270 | config KEXEC |
271 | bool "kexec system call (EXPERIMENTAL)" | |
fd4ba7e2 | 272 | depends on (PPC_PRPMC2800 || PPC_MULTIPLATFORM) && EXPERIMENTAL |
14cf11af PM |
273 | help |
274 | kexec is a system call that implements the ability to shutdown your | |
275 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 276 | but it is independent of the system firmware. And like a reboot |
14cf11af PM |
277 | you can start any kernel with it, not just Linux. |
278 | ||
1f1332f7 | 279 | The name comes from the similarity to the exec system call. |
14cf11af PM |
280 | |
281 | It is an ongoing process to be certain the hardware in a machine | |
282 | is properly shutdown, so do not be surprised if this code does not | |
283 | initially work for you. It may help to enable device hotplugging | |
284 | support. As of this writing the exact hardware interface is | |
285 | strongly in flux, so no good recommendation can be made. | |
286 | ||
e8625d46 | 287 | config CRASH_DUMP |
cd9c99d7 | 288 | bool "Build a kdump crash kernel (EXPERIMENTAL)" |
e8625d46 HM |
289 | depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL |
290 | help | |
291 | Build a kernel suitable for use as a kdump capture kernel. | |
292 | The kernel will be linked at a different address than normal, and | |
293 | so can only be used for Kdump. | |
294 | ||
295 | Don't change this unless you know what you are doing. | |
296 | ||
14cf11af PM |
297 | config PPCBUG_NVRAM |
298 | bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC | |
299 | default y if PPC_PREP | |
300 | ||
301 | config IRQ_ALL_CPUS | |
302 | bool "Distribute interrupts on all CPUs by default" | |
303 | depends on SMP && !MV64360 | |
304 | help | |
305 | This option gives the kernel permission to distribute IRQs across | |
306 | multiple CPUs. Saying N here will route all IRQs to the first | |
307 | CPU. Generally saying Y is safe, although some problems have been | |
308 | reported with SMP Power Macintoshes with this option enabled. | |
309 | ||
ffa27b6b AW |
310 | config NUMA |
311 | bool "NUMA support" | |
312 | depends on PPC64 | |
313 | default y if SMP && PPC_PSERIES | |
314 | ||
c80d79d7 YG |
315 | config NODES_SHIFT |
316 | int | |
317 | default "4" | |
318 | depends on NEED_MULTIPLE_NODES | |
319 | ||
14cf11af PM |
320 | config ARCH_SELECT_MEMORY_MODEL |
321 | def_bool y | |
322 | depends on PPC64 | |
323 | ||
324 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
325 | def_bool y |
326 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 327 | |
45fb6cea | 328 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 329 | def_bool y |
9100b205 | 330 | depends on PPC64 |
d29eff7b | 331 | select SPARSEMEM_VMEMMAP_ENABLE |
14cf11af | 332 | |
45fb6cea | 333 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 334 | def_bool y |
78bde53e | 335 | depends on (SMP && PPC_PSERIES) || PPC_PS3 |
14cf11af | 336 | |
c67c3cb4 | 337 | config ARCH_POPULATES_NODE_MAP |
14cf11af | 338 | def_bool y |
c67c3cb4 MG |
339 | |
340 | source "mm/Kconfig" | |
14cf11af | 341 | |
7e9191da MK |
342 | config ARCH_MEMORY_PROBE |
343 | def_bool y | |
344 | depends on MEMORY_HOTPLUG | |
345 | ||
75167957 AW |
346 | # Some NUMA nodes have memory ranges that span |
347 | # other nodes. Even though a pfn is valid and | |
348 | # between a node's start and end pfns, it may not | |
349 | # reside on that node. See memmap_init_zone() | |
350 | # for details. | |
351 | config NODES_SPAN_OTHER_NODES | |
352 | def_bool y | |
353 | depends on NEED_MULTIPLE_NODES | |
354 | ||
16c2d476 BH |
355 | config PPC_HAS_HASH_64K |
356 | bool | |
357 | depends on PPC64 | |
358 | default n | |
359 | ||
3c726f8d BH |
360 | config PPC_64K_PAGES |
361 | bool "64k page size" | |
863c84b9 | 362 | depends on PPC64 |
16c2d476 | 363 | select PPC_HAS_HASH_64K |
3c726f8d BH |
364 | help |
365 | This option changes the kernel logical page size to 64k. On machines | |
98750261 KG |
366 | without processor support for 64k pages, the kernel will simulate |
367 | them by loading each individual 4k page on demand transparently, | |
368 | while on hardware with such support, it will be used to map | |
369 | normal application pages. | |
3c726f8d | 370 | |
fa28237c PM |
371 | config PPC_SUBPAGE_PROT |
372 | bool "Support setting protections for 4k subpages" | |
373 | depends on PPC_64K_PAGES | |
374 | help | |
375 | This option adds support for a system call to allow user programs | |
376 | to set access permissions (read/write, readonly, or no access) | |
377 | on the 4k subpages of each 64k page. | |
378 | ||
14cf11af PM |
379 | config SCHED_SMT |
380 | bool "SMT (Hyperthreading) scheduler support" | |
381 | depends on PPC64 && SMP | |
14cf11af PM |
382 | help |
383 | SMT scheduler support improves the CPU scheduler's decision making | |
384 | when dealing with POWER5 cpus at a cost of slightly increased | |
385 | overhead in some places. If unsure say N here. | |
386 | ||
387 | config PROC_DEVICETREE | |
5f296755 PM |
388 | bool "Support for device tree in /proc" |
389 | depends on PROC_FS | |
14cf11af PM |
390 | help |
391 | This option adds a device-tree directory under /proc which contains | |
392 | an image of the device tree that the kernel copies from Open | |
5f296755 | 393 | Firmware or other boot firmware. If unsure, say Y here. |
14cf11af | 394 | |
14cf11af PM |
395 | config CMDLINE_BOOL |
396 | bool "Default bootloader kernel arguments" | |
14cf11af PM |
397 | |
398 | config CMDLINE | |
399 | string "Initial kernel command string" | |
400 | depends on CMDLINE_BOOL | |
401 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
402 | help | |
403 | On some platforms, there is currently no way for the boot loader to | |
404 | pass arguments to the kernel. For these platforms, you can supply | |
405 | some command-line options at build time by entering them here. In | |
406 | most cases you will need to specify the root device here. | |
407 | ||
408 | if !44x || BROKEN | |
b28f5081 JB |
409 | config ARCH_WANTS_FREEZER_CONTROL |
410 | def_bool y | |
411 | depends on ADB_PMU | |
412 | ||
14cf11af PM |
413 | source kernel/power/Kconfig |
414 | endif | |
415 | ||
416 | config SECCOMP | |
417 | bool "Enable seccomp to safely compute untrusted bytecode" | |
418 | depends on PROC_FS | |
419 | default y | |
420 | help | |
421 | This kernel feature is useful for number crunching applications | |
422 | that may need to compute untrusted bytecode during their | |
423 | execution. By using pipes or other transports made available to | |
424 | the process as file descriptors supporting the read/write | |
425 | syscalls, it's possible to isolate those applications in | |
426 | their own address space using seccomp. Once seccomp is | |
427 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
428 | and the task is only allowed to execute a few safe syscalls | |
429 | defined by each seccomp mode. | |
430 | ||
431 | If unsure, say Y. Only embedded should say N here. | |
432 | ||
270429ba SW |
433 | config WANT_DEVICE_TREE |
434 | bool | |
435 | default n | |
436 | ||
437 | config DEVICE_TREE | |
438 | string "Static device tree source file" | |
439 | depends on WANT_DEVICE_TREE | |
440 | help | |
441 | This specifies the device tree source (.dts) file to be | |
442 | compiled and included when building the bootwrapper. If a | |
443 | relative filename is given, then it will be relative to | |
444 | arch/powerpc/boot/dts. If you are not using the bootwrapper, | |
445 | or do not need to build a dts into the bootwrapper, this | |
446 | field is ignored. | |
447 | ||
448 | For example, this is required when building a cuImage target | |
449 | for an older U-Boot, which cannot pass a device tree itself. | |
450 | Such a kernel will not work with a newer U-Boot that tries to | |
451 | pass a device tree (unless you tell it not to). If your U-Boot | |
452 | does not mention a device tree in "help bootm", then use the | |
453 | cuImage target and specify a device tree here. Otherwise, use | |
454 | the uImage target and leave this field blank. | |
455 | ||
14cf11af PM |
456 | endmenu |
457 | ||
458 | config ISA_DMA_API | |
459 | bool | |
373a6da1 | 460 | default !PPC_ISERIES || PCI |
14cf11af PM |
461 | |
462 | menu "Bus options" | |
463 | ||
464 | config ISA | |
465 | bool "Support for ISA-bus hardware" | |
466 | depends on PPC_PREP || PPC_CHRP | |
f9bd170a | 467 | select PPC_I8259 |
14cf11af PM |
468 | help |
469 | Find out whether you have ISA slots on your motherboard. ISA is the | |
470 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
471 | inside your box. If you have an Apple machine, say N here; if you | |
472 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If | |
473 | you have an embedded board, consult your board documentation. | |
474 | ||
5ac6da66 CL |
475 | config ZONE_DMA |
476 | bool | |
477 | default y | |
478 | ||
14cf11af PM |
479 | config GENERIC_ISA_DMA |
480 | bool | |
481 | depends on PPC64 || POWER4 || 6xx && !CPM2 | |
482 | default y | |
483 | ||
25635c71 PM |
484 | config PPC_INDIRECT_PCI |
485 | bool | |
486 | depends on PCI | |
63dafe57 | 487 | default y if 40x || 44x |
25635c71 PM |
488 | default n |
489 | ||
14cf11af PM |
490 | config EISA |
491 | bool | |
492 | ||
493 | config SBUS | |
494 | bool | |
495 | ||
08264cbc KG |
496 | config FSL_SOC |
497 | bool | |
498 | ||
55c44991 RZ |
499 | config FSL_PCI |
500 | bool | |
501 | select PPC_INDIRECT_PCI | |
502 | ||
14cf11af PM |
503 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
504 | config MCA | |
505 | bool | |
506 | ||
507 | config PCI | |
53158620 | 508 | bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \ |
bed59275 | 509 | || PPC_MPC52xx || (EMBEDDED && (PPC_PSERIES || PPC_ISERIES)) \ |
f9bdedb2 | 510 | || PPC_PS3 || 44x |
f21f49ea | 511 | default y if !40x && !CPM2 && !8xx && !PPC_83xx \ |
53158620 | 512 | && !PPC_85xx && !PPC_86xx |
f21f49ea | 513 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx |
14cf11af | 514 | default PCI_QSPAN if !4xx && !CPM2 && 8xx |
df87ef55 | 515 | select ARCH_SUPPORTS_MSI |
14cf11af PM |
516 | help |
517 | Find out whether your system includes a PCI bus. PCI is the name of | |
518 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
519 | your box. If you say Y here, the kernel will include drivers and | |
520 | infrastructure code to support PCI bus devices. | |
521 | ||
522 | config PCI_DOMAINS | |
36e23590 MW |
523 | def_bool PCI |
524 | ||
525 | config PCI_SYSCALL | |
526 | def_bool PCI | |
14cf11af | 527 | |
14cf11af PM |
528 | config PCI_QSPAN |
529 | bool "QSpan PCI" | |
530 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 531 | select PPC_I8259 |
14cf11af PM |
532 | help |
533 | Say Y here if you have a system based on a Motorola 8xx-series | |
534 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
535 | ||
536 | config PCI_8260 | |
537 | bool | |
538 | depends on PCI && 8260 | |
25635c71 | 539 | select PPC_INDIRECT_PCI |
14cf11af PM |
540 | default y |
541 | ||
542 | config 8260_PCI9 | |
4a3ecc62 | 543 | bool "Enable workaround for MPC826x erratum PCI 9" |
e00c5498 | 544 | depends on PCI_8260 && !8272 |
14cf11af PM |
545 | default y |
546 | ||
547 | choice | |
4a3ecc62 | 548 | prompt "IDMA channel for PCI 9 workaround" |
14cf11af PM |
549 | depends on 8260_PCI9 |
550 | ||
551 | config 8260_PCI9_IDMA1 | |
552 | bool "IDMA1" | |
553 | ||
554 | config 8260_PCI9_IDMA2 | |
555 | bool "IDMA2" | |
556 | ||
557 | config 8260_PCI9_IDMA3 | |
558 | bool "IDMA3" | |
559 | ||
560 | config 8260_PCI9_IDMA4 | |
561 | bool "IDMA4" | |
562 | ||
563 | endchoice | |
564 | ||
bb53bb3d JM |
565 | source "drivers/pci/pcie/Kconfig" |
566 | ||
14cf11af PM |
567 | source "drivers/pci/Kconfig" |
568 | ||
569 | source "drivers/pcmcia/Kconfig" | |
570 | ||
571 | source "drivers/pci/hotplug/Kconfig" | |
572 | ||
573 | endmenu | |
574 | ||
575 | menu "Advanced setup" | |
576 | depends on PPC32 | |
577 | ||
578 | config ADVANCED_OPTIONS | |
579 | bool "Prompt for advanced kernel configuration options" | |
580 | help | |
581 | This option will enable prompting for a variety of advanced kernel | |
582 | configuration options. These options can cause the kernel to not | |
583 | work if they are set incorrectly, but can be used to optimize certain | |
584 | aspects of kernel memory management. | |
585 | ||
586 | Unless you know what you are doing, say N here. | |
587 | ||
588 | comment "Default settings for advanced configuration options are used" | |
589 | depends on !ADVANCED_OPTIONS | |
590 | ||
591 | config HIGHMEM_START_BOOL | |
592 | bool "Set high memory pool address" | |
593 | depends on ADVANCED_OPTIONS && HIGHMEM | |
594 | help | |
595 | This option allows you to set the base address of the kernel virtual | |
596 | area used to map high memory pages. This can be useful in | |
597 | optimizing the layout of kernel virtual memory. | |
598 | ||
599 | Say N here unless you know what you are doing. | |
600 | ||
601 | config HIGHMEM_START | |
602 | hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL | |
603 | default "0xfe000000" | |
604 | ||
605 | config LOWMEM_SIZE_BOOL | |
606 | bool "Set maximum low memory" | |
607 | depends on ADVANCED_OPTIONS | |
608 | help | |
609 | This option allows you to set the maximum amount of memory which | |
610 | will be used as "low memory", that is, memory which the kernel can | |
611 | access directly, without having to set up a kernel virtual mapping. | |
612 | This can be useful in optimizing the layout of kernel virtual | |
613 | memory. | |
614 | ||
615 | Say N here unless you know what you are doing. | |
616 | ||
617 | config LOWMEM_SIZE | |
618 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
619 | default "0x30000000" | |
620 | ||
621 | config KERNEL_START_BOOL | |
622 | bool "Set custom kernel base address" | |
623 | depends on ADVANCED_OPTIONS | |
624 | help | |
625 | This option allows you to set the kernel virtual address at which | |
626 | the kernel will map low memory (the kernel image will be linked at | |
627 | this address). This can be useful in optimizing the virtual memory | |
628 | layout of the system. | |
629 | ||
630 | Say N here unless you know what you are doing. | |
631 | ||
632 | config KERNEL_START | |
633 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
634 | default "0xc0000000" | |
635 | ||
636 | config TASK_SIZE_BOOL | |
637 | bool "Set custom user task size" | |
638 | depends on ADVANCED_OPTIONS | |
639 | help | |
640 | This option allows you to set the amount of virtual address space | |
641 | allocated to user tasks. This can be useful in optimizing the | |
642 | virtual memory layout of the system. | |
643 | ||
644 | Say N here unless you know what you are doing. | |
645 | ||
646 | config TASK_SIZE | |
647 | hex "Size of user task space" if TASK_SIZE_BOOL | |
4d9e5510 KG |
648 | default "0x80000000" if PPC_PREP || PPC_8xx |
649 | default "0xc0000000" | |
14cf11af PM |
650 | |
651 | config CONSISTENT_START_BOOL | |
652 | bool "Set custom consistent memory pool address" | |
653 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
654 | help | |
655 | This option allows you to set the base virtual address | |
4b3f686d | 656 | of the consistent memory pool. This pool of virtual |
14cf11af PM |
657 | memory is used to make consistent memory allocations. |
658 | ||
659 | config CONSISTENT_START | |
660 | hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL | |
ccf0d68e | 661 | default "0xfd000000" if (NOT_COHERENT_CACHE && 8xx) |
14cf11af PM |
662 | default "0xff100000" if NOT_COHERENT_CACHE |
663 | ||
664 | config CONSISTENT_SIZE_BOOL | |
665 | bool "Set custom consistent memory pool size" | |
666 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
667 | help | |
4b3f686d | 668 | This option allows you to set the size of the |
14cf11af PM |
669 | consistent memory pool. This pool of virtual memory |
670 | is used to make consistent memory allocations. | |
671 | ||
672 | config CONSISTENT_SIZE | |
673 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
674 | default "0x00200000" if NOT_COHERENT_CACHE | |
675 | ||
676 | config BOOT_LOAD_BOOL | |
677 | bool "Set the boot link/load address" | |
678 | depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM | |
679 | help | |
680 | This option allows you to set the initial load address of the zImage | |
681 | or zImage.initrd file. This can be useful if you are on a board | |
682 | which has a small amount of memory. | |
683 | ||
684 | Say N here unless you know what you are doing. | |
685 | ||
686 | config BOOT_LOAD | |
687 | hex "Link/load address for booting" if BOOT_LOAD_BOOL | |
688 | default "0x00400000" if 40x || 8xx || 8260 | |
689 | default "0x01000000" if 44x | |
690 | default "0x00800000" | |
691 | ||
692 | config PIN_TLB | |
693 | bool "Pinned Kernel TLBs (860 ONLY)" | |
694 | depends on ADVANCED_OPTIONS && 8xx | |
695 | endmenu | |
696 | ||
cabb5587 SR |
697 | if PPC64 |
698 | config KERNEL_START | |
699 | hex | |
eeb2d218 | 700 | default "0xc000000000000000" |
cabb5587 SR |
701 | endif |
702 | ||
14cf11af PM |
703 | source "net/Kconfig" |
704 | ||
705 | source "drivers/Kconfig" | |
706 | ||
707 | source "fs/Kconfig" | |
708 | ||
709 | # XXX source "arch/ppc/8xx_io/Kconfig" | |
710 | ||
711 | # XXX source "arch/ppc/8260_io/Kconfig" | |
712 | ||
98658538 LY |
713 | source "arch/powerpc/sysdev/qe_lib/Kconfig" |
714 | ||
14cf11af PM |
715 | source "lib/Kconfig" |
716 | ||
09cadedb | 717 | source "kernel/Kconfig.instrumentation" |
cd6b0762 | 718 | |
14cf11af PM |
719 | source "arch/powerpc/Kconfig.debug" |
720 | ||
721 | source "security/Kconfig" | |
722 | ||
723 | config KEYS_COMPAT | |
724 | bool | |
725 | depends on COMPAT && KEYS | |
726 | default y | |
727 | ||
728 | source "crypto/Kconfig" | |
6f668280 DP |
729 | |
730 | config PPC_CLOCK | |
731 | bool | |
732 | default n | |
1088a209 SM |
733 | |
734 | config PPC_LIB_RHEAP | |
735 | bool | |
736 |