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 | |
ec7748b5 | 90 | select HAVE_IDE |
42d4b839 | 91 | select HAVE_OPROFILE |
3f550096 | 92 | select HAVE_KPROBES |
9edddaa2 | 93 | select HAVE_KRETPROBES |
d9b2b2a2 | 94 | select HAVE_LMB |
14cf11af PM |
95 | |
96 | config EARLY_PRINTK | |
97 | bool | |
51d3082f | 98 | default y |
14cf11af PM |
99 | |
100 | config COMPAT | |
101 | bool | |
102 | default y if PPC64 | |
01e31dba | 103 | select COMPAT_BINFMT_ELF |
14cf11af PM |
104 | |
105 | config SYSVIPC_COMPAT | |
106 | bool | |
107 | depends on COMPAT && SYSVIPC | |
108 | default y | |
109 | ||
110 | # All PPC32s use generic nvram driver through ppc_md | |
111 | config GENERIC_NVRAM | |
112 | bool | |
113 | default y if PPC32 | |
114 | ||
115 | config SCHED_NO_NO_OMIT_FRAME_POINTER | |
116 | bool | |
117 | default y | |
118 | ||
119 | config ARCH_MAY_HAVE_PC_FDC | |
120 | bool | |
bed59275 | 121 | default !PPC_PSERIES || PCI |
14cf11af | 122 | |
08264cbc KG |
123 | config PPC_OF |
124 | def_bool y | |
125 | ||
97e873e5 SR |
126 | config OF |
127 | def_bool y | |
128 | ||
08264cbc KG |
129 | config PPC_UDBG_16550 |
130 | bool | |
131 | default n | |
132 | ||
08264cbc KG |
133 | config GENERIC_TBSYNC |
134 | bool | |
135 | default y if PPC32 && SMP | |
136 | default n | |
137 | ||
e65e1fc2 AV |
138 | config AUDIT_ARCH |
139 | bool | |
140 | default y | |
141 | ||
73c9ceab JF |
142 | config GENERIC_BUG |
143 | bool | |
144 | default y | |
145 | depends on BUG | |
146 | ||
b3028878 | 147 | config SYS_SUPPORTS_APM_EMULATION |
58da10bb | 148 | default y if PMAC_APM_EMU |
b3028878 JB |
149 | bool |
150 | ||
f4fc4a5b KG |
151 | config DEFAULT_UIMAGE |
152 | bool | |
153 | help | |
154 | Used to allow a board to specify it wants a uImage built by default | |
155 | default n | |
156 | ||
b09c1644 SW |
157 | config REDBOOT |
158 | bool | |
159 | ||
801e4062 | 160 | config HIBERNATE_32 |
543b9fd3 | 161 | bool |
801e4062 JB |
162 | depends on (PPC_PMAC && !SMP) || BROKEN |
163 | default y | |
164 | ||
165 | config HIBERNATE_64 | |
166 | bool | |
167 | depends on BROKEN || (PPC_PMAC64 && EXPERIMENTAL) | |
168 | default y | |
169 | ||
170 | config ARCH_HIBERNATION_POSSIBLE | |
171 | bool | |
172 | depends on (PPC64 && HIBERNATE_64) || (PPC32 && HIBERNATE_32) | |
543b9fd3 JB |
173 | default y |
174 | ||
f4cb5700 JB |
175 | config ARCH_SUSPEND_POSSIBLE |
176 | def_bool y | |
177 | depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 | |
178 | ||
4c75a6f4 BH |
179 | config PPC_DCR_NATIVE |
180 | bool | |
181 | default n | |
182 | ||
183 | config PPC_DCR_MMIO | |
184 | bool | |
185 | default n | |
186 | ||
187 | config PPC_DCR | |
188 | bool | |
189 | depends on PPC_DCR_NATIVE || PPC_DCR_MMIO | |
190 | default y | |
191 | ||
4c9d2800 BH |
192 | config PPC_OF_PLATFORM_PCI |
193 | bool | |
373a6da1 | 194 | depends on PCI |
4c9d2800 BH |
195 | depends on PPC64 # not supported on 32 bits yet |
196 | default n | |
197 | ||
14cf11af PM |
198 | source "init/Kconfig" |
199 | ||
a2d2e1ec | 200 | source "arch/powerpc/sysdev/Kconfig" |
4330f5da | 201 | source "arch/powerpc/platforms/Kconfig" |
14cf11af | 202 | |
14cf11af PM |
203 | menu "Kernel options" |
204 | ||
205 | config HIGHMEM | |
206 | bool "High memory support" | |
207 | depends on PPC32 | |
208 | ||
1ad74998 | 209 | source kernel/time/Kconfig |
14cf11af PM |
210 | source kernel/Kconfig.hz |
211 | source kernel/Kconfig.preempt | |
212 | source "fs/Kconfig.binfmt" | |
213 | ||
214 | # We optimistically allocate largepages from the VM, so make the limit | |
215 | # large enough (16MB). This badly named config option is actually | |
216 | # max order + 1 | |
217 | config FORCE_MAX_ZONEORDER | |
218 | int | |
219 | depends on PPC64 | |
02864867 | 220 | default "9" if PPC_64K_PAGES |
14cf11af PM |
221 | default "13" |
222 | ||
ba72cb8c MG |
223 | config HUGETLB_PAGE_SIZE_VARIABLE |
224 | bool | |
225 | depends on HUGETLB_PAGE | |
226 | default y | |
227 | ||
14cf11af PM |
228 | config MATH_EMULATION |
229 | bool "Math emulation" | |
4d52719a | 230 | depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 |
14cf11af PM |
231 | ---help--- |
232 | Some PowerPC chips designed for embedded applications do not have | |
233 | a floating-point unit and therefore do not implement the | |
234 | floating-point instructions in the PowerPC instruction set. If you | |
235 | say Y here, the kernel will include code to emulate a floating-point | |
236 | unit, which will allow programs that use floating-point | |
237 | instructions to run. | |
238 | ||
5dd57a13 SW |
239 | config 8XX_MINIMAL_FPEMU |
240 | bool "Minimal math emulation for 8xx" | |
241 | depends on 8xx && !MATH_EMULATION | |
242 | help | |
243 | Older arch/ppc kernels still emulated a few floating point | |
244 | instructions such as load and store, even when full math | |
245 | emulation is disabled. Say "Y" here if you want to preserve | |
246 | this behavior. | |
247 | ||
248 | It is recommended that you build a soft-float userspace instead. | |
249 | ||
14cf11af | 250 | config IOMMU_VMERGE |
768cc2d3 LV |
251 | bool "Enable IOMMU virtual merging" |
252 | depends on PPC64 | |
253 | default y | |
14cf11af PM |
254 | help |
255 | Cause IO segments sent to a device for DMA to be merged virtually | |
256 | by the IOMMU when they happen to have been allocated contiguously. | |
257 | This doesn't add pressure to the IOMMU allocator. However, some | |
258 | drivers don't support getting large merged segments coming back | |
768cc2d3 LV |
259 | from *_map_sg(). |
260 | ||
261 | Most drivers don't have this problem; it is safe to say Y here. | |
14cf11af | 262 | |
fb3475e9 FT |
263 | config IOMMU_HELPER |
264 | def_bool PPC64 | |
265 | ||
14cf11af PM |
266 | config HOTPLUG_CPU |
267 | bool "Support for enabling/disabling CPUs" | |
268 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) | |
269 | ---help--- | |
270 | Say Y here to be able to disable and re-enable individual | |
271 | CPUs at runtime on SMP machines. | |
272 | ||
273 | Say N if you are unsure. | |
274 | ||
cc57637b YG |
275 | config ARCH_ENABLE_MEMORY_HOTPLUG |
276 | def_bool y | |
277 | ||
a99824f3 BP |
278 | config ARCH_HAS_WALK_MEMORY |
279 | def_bool y | |
280 | ||
1482471d BP |
281 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
282 | def_bool y | |
283 | ||
14cf11af PM |
284 | config KEXEC |
285 | bool "kexec system call (EXPERIMENTAL)" | |
fd4ba7e2 | 286 | depends on (PPC_PRPMC2800 || PPC_MULTIPLATFORM) && EXPERIMENTAL |
14cf11af PM |
287 | help |
288 | kexec is a system call that implements the ability to shutdown your | |
289 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 290 | but it is independent of the system firmware. And like a reboot |
14cf11af PM |
291 | you can start any kernel with it, not just Linux. |
292 | ||
1f1332f7 | 293 | The name comes from the similarity to the exec system call. |
14cf11af PM |
294 | |
295 | It is an ongoing process to be certain the hardware in a machine | |
296 | is properly shutdown, so do not be surprised if this code does not | |
297 | initially work for you. It may help to enable device hotplugging | |
298 | support. As of this writing the exact hardware interface is | |
299 | strongly in flux, so no good recommendation can be made. | |
300 | ||
e8625d46 | 301 | config CRASH_DUMP |
cd9c99d7 | 302 | bool "Build a kdump crash kernel (EXPERIMENTAL)" |
e8625d46 HM |
303 | depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL |
304 | help | |
305 | Build a kernel suitable for use as a kdump capture kernel. | |
306 | The kernel will be linked at a different address than normal, and | |
307 | so can only be used for Kdump. | |
308 | ||
309 | Don't change this unless you know what you are doing. | |
310 | ||
242f271c MA |
311 | config PHYP_DUMP |
312 | bool "Hypervisor-assisted dump (EXPERIMENTAL)" | |
313 | depends on PPC_PSERIES && EXPERIMENTAL | |
314 | help | |
315 | Hypervisor-assisted dump is meant to be a kdump replacement | |
316 | offering robustness and speed not possible without system | |
317 | hypervisor assistence. | |
318 | ||
319 | If unsure, say "N" | |
320 | ||
14cf11af PM |
321 | config PPCBUG_NVRAM |
322 | bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC | |
323 | default y if PPC_PREP | |
324 | ||
325 | config IRQ_ALL_CPUS | |
326 | bool "Distribute interrupts on all CPUs by default" | |
327 | depends on SMP && !MV64360 | |
328 | help | |
329 | This option gives the kernel permission to distribute IRQs across | |
330 | multiple CPUs. Saying N here will route all IRQs to the first | |
331 | CPU. Generally saying Y is safe, although some problems have been | |
332 | reported with SMP Power Macintoshes with this option enabled. | |
333 | ||
ffa27b6b AW |
334 | config NUMA |
335 | bool "NUMA support" | |
336 | depends on PPC64 | |
337 | default y if SMP && PPC_PSERIES | |
338 | ||
c80d79d7 YG |
339 | config NODES_SHIFT |
340 | int | |
341 | default "4" | |
342 | depends on NEED_MULTIPLE_NODES | |
343 | ||
14cf11af PM |
344 | config ARCH_SELECT_MEMORY_MODEL |
345 | def_bool y | |
346 | depends on PPC64 | |
347 | ||
348 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
349 | def_bool y |
350 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 351 | |
45fb6cea | 352 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 353 | def_bool y |
9100b205 | 354 | depends on PPC64 |
d29eff7b | 355 | select SPARSEMEM_VMEMMAP_ENABLE |
14cf11af | 356 | |
45fb6cea | 357 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 358 | def_bool y |
78bde53e | 359 | depends on (SMP && PPC_PSERIES) || PPC_PS3 |
14cf11af | 360 | |
c67c3cb4 | 361 | config ARCH_POPULATES_NODE_MAP |
14cf11af | 362 | def_bool y |
c67c3cb4 MG |
363 | |
364 | source "mm/Kconfig" | |
14cf11af | 365 | |
7e9191da MK |
366 | config ARCH_MEMORY_PROBE |
367 | def_bool y | |
368 | depends on MEMORY_HOTPLUG | |
369 | ||
75167957 AW |
370 | # Some NUMA nodes have memory ranges that span |
371 | # other nodes. Even though a pfn is valid and | |
372 | # between a node's start and end pfns, it may not | |
373 | # reside on that node. See memmap_init_zone() | |
374 | # for details. | |
375 | config NODES_SPAN_OTHER_NODES | |
376 | def_bool y | |
377 | depends on NEED_MULTIPLE_NODES | |
378 | ||
16c2d476 BH |
379 | config PPC_HAS_HASH_64K |
380 | bool | |
381 | depends on PPC64 | |
382 | default n | |
383 | ||
3c726f8d BH |
384 | config PPC_64K_PAGES |
385 | bool "64k page size" | |
863c84b9 | 386 | depends on PPC64 |
16c2d476 | 387 | select PPC_HAS_HASH_64K |
3c726f8d BH |
388 | help |
389 | This option changes the kernel logical page size to 64k. On machines | |
98750261 KG |
390 | without processor support for 64k pages, the kernel will simulate |
391 | them by loading each individual 4k page on demand transparently, | |
392 | while on hardware with such support, it will be used to map | |
393 | normal application pages. | |
3c726f8d | 394 | |
fa28237c PM |
395 | config PPC_SUBPAGE_PROT |
396 | bool "Support setting protections for 4k subpages" | |
397 | depends on PPC_64K_PAGES | |
398 | help | |
399 | This option adds support for a system call to allow user programs | |
400 | to set access permissions (read/write, readonly, or no access) | |
401 | on the 4k subpages of each 64k page. | |
402 | ||
14cf11af PM |
403 | config SCHED_SMT |
404 | bool "SMT (Hyperthreading) scheduler support" | |
405 | depends on PPC64 && SMP | |
14cf11af PM |
406 | help |
407 | SMT scheduler support improves the CPU scheduler's decision making | |
408 | when dealing with POWER5 cpus at a cost of slightly increased | |
409 | overhead in some places. If unsure say N here. | |
410 | ||
411 | config PROC_DEVICETREE | |
5f296755 PM |
412 | bool "Support for device tree in /proc" |
413 | depends on PROC_FS | |
14cf11af PM |
414 | help |
415 | This option adds a device-tree directory under /proc which contains | |
416 | an image of the device tree that the kernel copies from Open | |
5f296755 | 417 | Firmware or other boot firmware. If unsure, say Y here. |
14cf11af | 418 | |
14cf11af PM |
419 | config CMDLINE_BOOL |
420 | bool "Default bootloader kernel arguments" | |
14cf11af PM |
421 | |
422 | config CMDLINE | |
423 | string "Initial kernel command string" | |
424 | depends on CMDLINE_BOOL | |
425 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
426 | help | |
427 | On some platforms, there is currently no way for the boot loader to | |
428 | pass arguments to the kernel. For these platforms, you can supply | |
429 | some command-line options at build time by entering them here. In | |
430 | most cases you will need to specify the root device here. | |
431 | ||
432 | if !44x || BROKEN | |
b28f5081 JB |
433 | config ARCH_WANTS_FREEZER_CONTROL |
434 | def_bool y | |
435 | depends on ADB_PMU | |
436 | ||
14cf11af PM |
437 | source kernel/power/Kconfig |
438 | endif | |
439 | ||
440 | config SECCOMP | |
441 | bool "Enable seccomp to safely compute untrusted bytecode" | |
442 | depends on PROC_FS | |
443 | default y | |
444 | help | |
445 | This kernel feature is useful for number crunching applications | |
446 | that may need to compute untrusted bytecode during their | |
447 | execution. By using pipes or other transports made available to | |
448 | the process as file descriptors supporting the read/write | |
449 | syscalls, it's possible to isolate those applications in | |
450 | their own address space using seccomp. Once seccomp is | |
451 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
452 | and the task is only allowed to execute a few safe syscalls | |
453 | defined by each seccomp mode. | |
454 | ||
455 | If unsure, say Y. Only embedded should say N here. | |
456 | ||
457 | endmenu | |
458 | ||
459 | config ISA_DMA_API | |
460 | bool | |
373a6da1 | 461 | default !PPC_ISERIES || PCI |
14cf11af PM |
462 | |
463 | menu "Bus options" | |
464 | ||
465 | config ISA | |
466 | bool "Support for ISA-bus hardware" | |
467 | depends on PPC_PREP || PPC_CHRP | |
f9bd170a | 468 | select PPC_I8259 |
14cf11af PM |
469 | help |
470 | Find out whether you have ISA slots on your motherboard. ISA is the | |
471 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
472 | inside your box. If you have an Apple machine, say N here; if you | |
473 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If | |
474 | you have an embedded board, consult your board documentation. | |
475 | ||
5ac6da66 CL |
476 | config ZONE_DMA |
477 | bool | |
478 | default y | |
479 | ||
14cf11af PM |
480 | config GENERIC_ISA_DMA |
481 | bool | |
482 | depends on PPC64 || POWER4 || 6xx && !CPM2 | |
483 | default y | |
484 | ||
25635c71 PM |
485 | config PPC_INDIRECT_PCI |
486 | bool | |
487 | depends on PCI | |
63dafe57 | 488 | default y if 40x || 44x |
25635c71 PM |
489 | default n |
490 | ||
14cf11af PM |
491 | config EISA |
492 | bool | |
493 | ||
494 | config SBUS | |
495 | bool | |
496 | ||
08264cbc KG |
497 | config FSL_SOC |
498 | bool | |
499 | ||
55c44991 RZ |
500 | config FSL_PCI |
501 | bool | |
502 | select PPC_INDIRECT_PCI | |
503 | ||
14cf11af PM |
504 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
505 | config MCA | |
506 | bool | |
507 | ||
508 | config PCI | |
53158620 | 509 | bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \ |
bed59275 | 510 | || PPC_MPC52xx || (EMBEDDED && (PPC_PSERIES || PPC_ISERIES)) \ |
f9bdedb2 | 511 | || PPC_PS3 || 44x |
e177edcd | 512 | default y if !40x && !CPM2 && !8xx && !PPC_MPC512x && !PPC_83xx \ |
53158620 | 513 | && !PPC_85xx && !PPC_86xx |
f21f49ea | 514 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx |
14cf11af | 515 | default PCI_QSPAN if !4xx && !CPM2 && 8xx |
df87ef55 | 516 | select ARCH_SUPPORTS_MSI |
14cf11af PM |
517 | help |
518 | Find out whether your system includes a PCI bus. PCI is the name of | |
519 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
520 | your box. If you say Y here, the kernel will include drivers and | |
521 | infrastructure code to support PCI bus devices. | |
522 | ||
523 | config PCI_DOMAINS | |
36e23590 MW |
524 | def_bool PCI |
525 | ||
526 | config PCI_SYSCALL | |
527 | def_bool PCI | |
14cf11af | 528 | |
14cf11af PM |
529 | config PCI_QSPAN |
530 | bool "QSpan PCI" | |
531 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 532 | select PPC_I8259 |
14cf11af PM |
533 | help |
534 | Say Y here if you have a system based on a Motorola 8xx-series | |
535 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
536 | ||
537 | config PCI_8260 | |
538 | bool | |
539 | depends on PCI && 8260 | |
25635c71 | 540 | select PPC_INDIRECT_PCI |
14cf11af PM |
541 | default y |
542 | ||
543 | config 8260_PCI9 | |
4a3ecc62 | 544 | bool "Enable workaround for MPC826x erratum PCI 9" |
e00c5498 | 545 | depends on PCI_8260 && !8272 |
14cf11af PM |
546 | default y |
547 | ||
548 | choice | |
4a3ecc62 | 549 | prompt "IDMA channel for PCI 9 workaround" |
14cf11af PM |
550 | depends on 8260_PCI9 |
551 | ||
552 | config 8260_PCI9_IDMA1 | |
553 | bool "IDMA1" | |
554 | ||
555 | config 8260_PCI9_IDMA2 | |
556 | bool "IDMA2" | |
557 | ||
558 | config 8260_PCI9_IDMA3 | |
559 | bool "IDMA3" | |
560 | ||
561 | config 8260_PCI9_IDMA4 | |
562 | bool "IDMA4" | |
563 | ||
564 | endchoice | |
565 | ||
bb53bb3d JM |
566 | source "drivers/pci/pcie/Kconfig" |
567 | ||
14cf11af PM |
568 | source "drivers/pci/Kconfig" |
569 | ||
570 | source "drivers/pcmcia/Kconfig" | |
571 | ||
572 | source "drivers/pci/hotplug/Kconfig" | |
573 | ||
574 | endmenu | |
575 | ||
576 | menu "Advanced setup" | |
577 | depends on PPC32 | |
578 | ||
579 | config ADVANCED_OPTIONS | |
580 | bool "Prompt for advanced kernel configuration options" | |
581 | help | |
582 | This option will enable prompting for a variety of advanced kernel | |
583 | configuration options. These options can cause the kernel to not | |
584 | work if they are set incorrectly, but can be used to optimize certain | |
585 | aspects of kernel memory management. | |
586 | ||
587 | Unless you know what you are doing, say N here. | |
588 | ||
589 | comment "Default settings for advanced configuration options are used" | |
590 | depends on !ADVANCED_OPTIONS | |
591 | ||
592 | config HIGHMEM_START_BOOL | |
593 | bool "Set high memory pool address" | |
594 | depends on ADVANCED_OPTIONS && HIGHMEM | |
595 | help | |
596 | This option allows you to set the base address of the kernel virtual | |
597 | area used to map high memory pages. This can be useful in | |
598 | optimizing the layout of kernel virtual memory. | |
599 | ||
600 | Say N here unless you know what you are doing. | |
601 | ||
602 | config HIGHMEM_START | |
603 | hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL | |
604 | default "0xfe000000" | |
605 | ||
606 | config LOWMEM_SIZE_BOOL | |
607 | bool "Set maximum low memory" | |
608 | depends on ADVANCED_OPTIONS | |
609 | help | |
610 | This option allows you to set the maximum amount of memory which | |
611 | will be used as "low memory", that is, memory which the kernel can | |
612 | access directly, without having to set up a kernel virtual mapping. | |
613 | This can be useful in optimizing the layout of kernel virtual | |
614 | memory. | |
615 | ||
616 | Say N here unless you know what you are doing. | |
617 | ||
618 | config LOWMEM_SIZE | |
619 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
620 | default "0x30000000" | |
621 | ||
622 | config KERNEL_START_BOOL | |
623 | bool "Set custom kernel base address" | |
624 | depends on ADVANCED_OPTIONS | |
625 | help | |
626 | This option allows you to set the kernel virtual address at which | |
627 | the kernel will map low memory (the kernel image will be linked at | |
628 | this address). This can be useful in optimizing the virtual memory | |
629 | layout of the system. | |
630 | ||
631 | Say N here unless you know what you are doing. | |
632 | ||
633 | config KERNEL_START | |
634 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
635 | default "0xc0000000" | |
636 | ||
637 | config TASK_SIZE_BOOL | |
638 | bool "Set custom user task size" | |
639 | depends on ADVANCED_OPTIONS | |
640 | help | |
641 | This option allows you to set the amount of virtual address space | |
642 | allocated to user tasks. This can be useful in optimizing the | |
643 | virtual memory layout of the system. | |
644 | ||
645 | Say N here unless you know what you are doing. | |
646 | ||
647 | config TASK_SIZE | |
648 | hex "Size of user task space" if TASK_SIZE_BOOL | |
4d9e5510 KG |
649 | default "0x80000000" if PPC_PREP || PPC_8xx |
650 | default "0xc0000000" | |
14cf11af PM |
651 | |
652 | config CONSISTENT_START_BOOL | |
653 | bool "Set custom consistent memory pool address" | |
654 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
655 | help | |
656 | This option allows you to set the base virtual address | |
4b3f686d | 657 | of the consistent memory pool. This pool of virtual |
14cf11af PM |
658 | memory is used to make consistent memory allocations. |
659 | ||
660 | config CONSISTENT_START | |
661 | hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL | |
ccf0d68e | 662 | default "0xfd000000" if (NOT_COHERENT_CACHE && 8xx) |
14cf11af PM |
663 | default "0xff100000" if NOT_COHERENT_CACHE |
664 | ||
665 | config CONSISTENT_SIZE_BOOL | |
666 | bool "Set custom consistent memory pool size" | |
667 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
668 | help | |
4b3f686d | 669 | This option allows you to set the size of the |
14cf11af PM |
670 | consistent memory pool. This pool of virtual memory |
671 | is used to make consistent memory allocations. | |
672 | ||
673 | config CONSISTENT_SIZE | |
674 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
675 | default "0x00200000" if NOT_COHERENT_CACHE | |
676 | ||
677 | config BOOT_LOAD_BOOL | |
678 | bool "Set the boot link/load address" | |
679 | depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM | |
680 | help | |
681 | This option allows you to set the initial load address of the zImage | |
682 | or zImage.initrd file. This can be useful if you are on a board | |
683 | which has a small amount of memory. | |
684 | ||
685 | Say N here unless you know what you are doing. | |
686 | ||
687 | config BOOT_LOAD | |
688 | hex "Link/load address for booting" if BOOT_LOAD_BOOL | |
689 | default "0x00400000" if 40x || 8xx || 8260 | |
690 | default "0x01000000" if 44x | |
691 | default "0x00800000" | |
692 | ||
693 | config PIN_TLB | |
694 | bool "Pinned Kernel TLBs (860 ONLY)" | |
695 | depends on ADVANCED_OPTIONS && 8xx | |
696 | endmenu | |
697 | ||
cabb5587 SR |
698 | if PPC64 |
699 | config KERNEL_START | |
700 | hex | |
eeb2d218 | 701 | default "0xc000000000000000" |
cabb5587 SR |
702 | endif |
703 | ||
14cf11af PM |
704 | source "net/Kconfig" |
705 | ||
706 | source "drivers/Kconfig" | |
707 | ||
708 | source "fs/Kconfig" | |
709 | ||
710 | # XXX source "arch/ppc/8xx_io/Kconfig" | |
711 | ||
712 | # XXX source "arch/ppc/8260_io/Kconfig" | |
713 | ||
98658538 LY |
714 | source "arch/powerpc/sysdev/qe_lib/Kconfig" |
715 | ||
14cf11af PM |
716 | source "lib/Kconfig" |
717 | ||
14cf11af PM |
718 | source "arch/powerpc/Kconfig.debug" |
719 | ||
720 | source "security/Kconfig" | |
721 | ||
722 | config KEYS_COMPAT | |
723 | bool | |
724 | depends on COMPAT && KEYS | |
725 | default y | |
726 | ||
727 | source "crypto/Kconfig" | |
6f668280 DP |
728 | |
729 | config PPC_CLOCK | |
730 | bool | |
731 | default n | |
1088a209 SM |
732 | |
733 | config PPC_LIB_RHEAP | |
734 | bool | |
735 |