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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 | |||
7 | config PPC64 | ||
8 | bool "64-bit kernel" | ||
9 | default n | ||
10 | help | ||
11 | This option selects whether a 32-bit or a 64-bit kernel | ||
12 | will be built. | ||
13 | |||
14 | config PPC32 | ||
15 | bool | ||
16 | default y if !PPC64 | ||
17 | |||
18 | config 64BIT | ||
19 | bool | ||
20 | default y if PPC64 | ||
21 | |||
22 | config PPC_MERGE | ||
23 | def_bool y | ||
24 | |||
25 | config MMU | ||
26 | bool | ||
27 | default y | ||
28 | |||
29 | config UID16 | ||
30 | bool | ||
31 | |||
32 | config GENERIC_HARDIRQS | ||
33 | bool | ||
34 | default y | ||
35 | |||
36 | config RWSEM_GENERIC_SPINLOCK | ||
37 | bool | ||
38 | |||
39 | config RWSEM_XCHGADD_ALGORITHM | ||
40 | bool | ||
41 | default y | ||
42 | |||
43 | config GENERIC_CALIBRATE_DELAY | ||
44 | bool | ||
45 | default y | ||
46 | |||
47 | config PPC | ||
48 | bool | ||
49 | default y | ||
50 | |||
51 | config EARLY_PRINTK | ||
52 | bool | ||
53 | default y if PPC64 | ||
54 | |||
55 | config COMPAT | ||
56 | bool | ||
57 | default y if PPC64 | ||
58 | |||
59 | config SYSVIPC_COMPAT | ||
60 | bool | ||
61 | depends on COMPAT && SYSVIPC | ||
62 | default y | ||
63 | |||
64 | # All PPC32s use generic nvram driver through ppc_md | ||
65 | config GENERIC_NVRAM | ||
66 | bool | ||
67 | default y if PPC32 | ||
68 | |||
69 | config SCHED_NO_NO_OMIT_FRAME_POINTER | ||
70 | bool | ||
71 | default y | ||
72 | |||
73 | config ARCH_MAY_HAVE_PC_FDC | ||
74 | bool | ||
75 | default y | ||
76 | |||
77 | menu "Processor support" | ||
78 | choice | ||
79 | prompt "Processor Type" | ||
80 | depends on PPC32 | ||
81 | default 6xx | ||
82 | |||
83 | config 6xx | ||
84 | bool "6xx/7xx/74xx" | ||
85 | select PPC_FPU | ||
86 | help | ||
87 | There are four families of PowerPC chips supported. The more common | ||
88 | types (601, 603, 604, 740, 750, 7400), the Motorola embedded | ||
89 | versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC | ||
90 | embedded versions (403 and 405) and the high end 64 bit Power | ||
91 | processors (POWER 3, POWER4, and IBM PPC970 also known as G5). | ||
92 | |||
93 | Unless you are building a kernel for one of the embedded processor | ||
94 | systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx. | ||
95 | Note that the kernel runs in 32-bit mode even on 64-bit chips. | ||
96 | |||
97 | config PPC_52xx | ||
98 | bool "Freescale 52xx" | ||
99 | |||
100 | config PPC_82xx | ||
101 | bool "Freescale 82xx" | ||
102 | |||
103 | config PPC_83xx | ||
104 | bool "Freescale 83xx" | ||
105 | |||
106 | config 40x | ||
107 | bool "AMCC 40x" | ||
108 | |||
109 | config 44x | ||
110 | bool "AMCC 44x" | ||
111 | |||
112 | config PPC64BRIDGE | ||
113 | select PPC_FPU | ||
114 | bool "POWER3, POWER4 and PPC970 (G5)" | ||
115 | |||
116 | config 8xx | ||
117 | bool "Freescale 8xx" | ||
118 | |||
119 | config E200 | ||
120 | bool "Freescale e200" | ||
121 | |||
122 | config E500 | ||
123 | bool "Freescale e500" | ||
124 | endchoice | ||
125 | |||
126 | config POWER4_ONLY | ||
127 | bool "Optimize for POWER4" | ||
128 | depends on PPC64 || PPC64BRIDGE | ||
129 | default n | ||
130 | ---help--- | ||
131 | Cause the compiler to optimize for POWER4/POWER5/PPC970 processors. | ||
132 | The resulting binary will not work on POWER3 or RS64 processors | ||
133 | when compiled with binutils 2.15 or later. | ||
134 | |||
135 | config POWER3 | ||
136 | bool | ||
137 | depends on PPC64 || PPC64BRIDGE | ||
138 | default y if !POWER4_ONLY | ||
139 | |||
140 | config POWER4 | ||
141 | depends on PPC64 || PPC64BRIDGE | ||
142 | def_bool y | ||
143 | |||
144 | config PPC_FPU | ||
145 | bool | ||
146 | default y if PPC64 | ||
147 | |||
148 | config BOOKE | ||
149 | bool | ||
150 | depends on E200 || E500 | ||
151 | default y | ||
152 | |||
153 | config FSL_BOOKE | ||
154 | bool | ||
155 | depends on E200 || E500 | ||
156 | default y | ||
157 | |||
158 | config PTE_64BIT | ||
159 | bool | ||
160 | depends on 44x || E500 | ||
161 | default y if 44x | ||
162 | default y if E500 && PHYS_64BIT | ||
163 | |||
164 | config PHYS_64BIT | ||
165 | bool 'Large physical address support' if E500 | ||
166 | depends on 44x || E500 | ||
167 | default y if 44x | ||
168 | ---help--- | ||
169 | This option enables kernel support for larger than 32-bit physical | ||
170 | addresses. This features is not be available on all e500 cores. | ||
171 | |||
172 | If in doubt, say N here. | ||
173 | |||
174 | config ALTIVEC | ||
175 | bool "AltiVec Support" | ||
176 | depends on 6xx || POWER4 | ||
177 | ---help--- | ||
178 | This option enables kernel support for the Altivec extensions to the | ||
179 | PowerPC processor. The kernel currently supports saving and restoring | ||
180 | altivec registers, and turning on the 'altivec enable' bit so user | ||
181 | processes can execute altivec instructions. | ||
182 | |||
183 | This option is only usefully if you have a processor that supports | ||
184 | altivec (G4, otherwise known as 74xx series), but does not have | ||
185 | any affect on a non-altivec cpu (it does, however add code to the | ||
186 | kernel). | ||
187 | |||
188 | If in doubt, say Y here. | ||
189 | |||
190 | config SPE | ||
191 | bool "SPE Support" | ||
192 | depends on E200 || E500 | ||
193 | ---help--- | ||
194 | This option enables kernel support for the Signal Processing | ||
195 | Extensions (SPE) to the PowerPC processor. The kernel currently | ||
196 | supports saving and restoring SPE registers, and turning on the | ||
197 | 'spe enable' bit so user processes can execute SPE instructions. | ||
198 | |||
199 | This option is only useful if you have a processor that supports | ||
200 | SPE (e500, otherwise known as 85xx series), but does not have any | ||
201 | effect on a non-spe cpu (it does, however add code to the kernel). | ||
202 | |||
203 | If in doubt, say Y here. | ||
204 | |||
205 | config PPC_STD_MMU | ||
206 | bool | ||
207 | depends on 6xx || POWER3 || POWER4 || PPC64 | ||
208 | default y | ||
209 | |||
210 | config PPC_STD_MMU_32 | ||
211 | def_bool y | ||
212 | depends on PPC_STD_MMU && PPC32 | ||
213 | |||
214 | config SMP | ||
215 | depends on PPC_STD_MMU | ||
216 | bool "Symmetric multi-processing support" | ||
217 | ---help--- | ||
218 | This enables support for systems with more than one CPU. If you have | ||
219 | a system with only one CPU, say N. If you have a system with more | ||
220 | than one CPU, say Y. Note that the kernel does not currently | ||
221 | support SMP machines with 603/603e/603ev or PPC750 ("G3") processors | ||
222 | since they have inadequate hardware support for multiprocessor | ||
223 | operation. | ||
224 | |||
225 | If you say N here, the kernel will run on single and multiprocessor | ||
226 | machines, but will use only one CPU of a multiprocessor machine. If | ||
227 | you say Y here, the kernel will run on single-processor machines. | ||
228 | On a single-processor machine, the kernel will run faster if you say | ||
229 | N here. | ||
230 | |||
231 | If you don't know what to do here, say N. | ||
232 | |||
233 | config NR_CPUS | ||
234 | int "Maximum number of CPUs (2-32)" | ||
235 | range 2 128 | ||
236 | depends on SMP | ||
237 | default "32" if PPC64 | ||
238 | default "4" | ||
239 | |||
240 | config NOT_COHERENT_CACHE | ||
241 | bool | ||
242 | depends on 4xx || 8xx || E200 | ||
243 | default y | ||
244 | endmenu | ||
245 | |||
246 | source "init/Kconfig" | ||
247 | |||
248 | menu "Platform support" | ||
249 | depends on PPC64 || 6xx | ||
250 | |||
251 | choice | ||
252 | prompt "Machine type" | ||
253 | default PPC_MULTIPLATFORM | ||
254 | |||
255 | config PPC_MULTIPLATFORM | ||
256 | bool "Generic desktop/server/laptop" | ||
257 | help | ||
258 | Select this option if configuring for an IBM pSeries or | ||
259 | RS/6000 machine, an Apple machine, or a PReP, CHRP, | ||
260 | Maple or Cell-based machine. | ||
261 | |||
262 | config PPC_ISERIES | ||
263 | bool "IBM Legacy iSeries" | ||
264 | depends on PPC64 | ||
265 | |||
266 | config EMBEDDED6xx | ||
267 | bool "Embedded 6xx/7xx/7xxx-based board" | ||
268 | depends on PPC32 | ||
269 | |||
270 | config APUS | ||
271 | bool "Amiga-APUS" | ||
272 | depends on PPC32 && BROKEN | ||
273 | help | ||
274 | Select APUS if configuring for a PowerUP Amiga. | ||
275 | More information is available at: | ||
276 | <http://linux-apus.sourceforge.net/>. | ||
277 | endchoice | ||
278 | |||
279 | config PPC_PSERIES | ||
280 | depends on PPC_MULTIPLATFORM && PPC64 | ||
281 | bool " IBM pSeries & new (POWER5-based) iSeries" | ||
282 | default y | ||
283 | |||
284 | config PPC_CHRP | ||
285 | bool " Common Hardware Reference Platform (CHRP) based machines" | ||
286 | depends on PPC_MULTIPLATFORM && PPC32 | ||
287 | default y | ||
288 | |||
289 | config PPC_PMAC | ||
290 | bool " Apple PowerMac based machines" | ||
291 | depends on PPC_MULTIPLATFORM | ||
292 | default y | ||
293 | |||
294 | config PPC_PMAC64 | ||
295 | bool | ||
296 | depends on PPC_PMAC && POWER4 | ||
297 | default y | ||
298 | |||
299 | config PPC_PREP | ||
300 | bool " PowerPC Reference Platform (PReP) based machines" | ||
301 | depends on PPC_MULTIPLATFORM && PPC32 | ||
302 | default y | ||
303 | |||
304 | config PPC_MAPLE | ||
305 | depends on PPC_MULTIPLATFORM && PPC64 | ||
306 | bool " Maple 970FX Evaluation Board" | ||
307 | select U3_DART | ||
308 | select MPIC_BROKEN_U3 | ||
309 | default n | ||
310 | help | ||
311 | This option enables support for the Maple 970FX Evaluation Board. | ||
312 | For more informations, refer to <http://www.970eval.com> | ||
313 | |||
314 | config PPC_BPA | ||
315 | bool " Broadband Processor Architecture" | ||
316 | depends on PPC_MULTIPLATFORM && PPC64 | ||
317 | |||
318 | config PPC_OF | ||
319 | bool | ||
320 | depends on PPC_MULTIPLATFORM # for now | ||
321 | default y | ||
322 | |||
323 | config XICS | ||
324 | depends on PPC_PSERIES | ||
325 | bool | ||
326 | default y | ||
327 | |||
328 | config U3_DART | ||
329 | bool | ||
330 | depends on PPC_MULTIPLATFORM && PPC64 | ||
331 | default n | ||
332 | |||
333 | config MPIC | ||
334 | depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE | ||
335 | bool | ||
336 | default y | ||
337 | |||
338 | config MPIC_BROKEN_U3 | ||
339 | bool | ||
340 | depends on PPC_MAPLE | ||
341 | default y | ||
342 | |||
343 | config BPA_IIC | ||
344 | depends on PPC_BPA | ||
345 | bool | ||
346 | default y | ||
347 | |||
348 | config IBMVIO | ||
349 | depends on PPC_PSERIES || PPC_ISERIES | ||
350 | bool | ||
351 | default y | ||
352 | |||
353 | source "drivers/cpufreq/Kconfig" | ||
354 | |||
355 | config CPU_FREQ_PMAC | ||
356 | bool "Support for Apple PowerBooks" | ||
357 | depends on CPU_FREQ && ADB_PMU && PPC32 | ||
358 | select CPU_FREQ_TABLE | ||
359 | help | ||
360 | This adds support for frequency switching on Apple PowerBooks, | ||
361 | this currently includes some models of iBook & Titanium | ||
362 | PowerBook. | ||
363 | |||
364 | config PPC601_SYNC_FIX | ||
365 | bool "Workarounds for PPC601 bugs" | ||
366 | depends on 6xx && (PPC_PREP || PPC_PMAC) | ||
367 | help | ||
368 | Some versions of the PPC601 (the first PowerPC chip) have bugs which | ||
369 | mean that extra synchronization instructions are required near | ||
370 | certain instructions, typically those that make major changes to the | ||
371 | CPU state. These extra instructions reduce performance slightly. | ||
372 | If you say N here, these extra instructions will not be included, | ||
373 | resulting in a kernel which will run faster but may not run at all | ||
374 | on some systems with the PPC601 chip. | ||
375 | |||
376 | If in doubt, say Y here. | ||
377 | |||
378 | config TAU | ||
379 | bool "Thermal Management Support" | ||
380 | depends on 6xx | ||
381 | help | ||
382 | G3 and G4 processors have an on-chip temperature sensor called the | ||
383 | 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die | ||
384 | temperature within 2-4 degrees Celsius. This option shows the current | ||
385 | on-die temperature in /proc/cpuinfo if the cpu supports it. | ||
386 | |||
387 | Unfortunately, on some chip revisions, this sensor is very inaccurate | ||
388 | and in some cases, does not work at all, so don't assume the cpu | ||
389 | temp is actually what /proc/cpuinfo says it is. | ||
390 | |||
391 | config TAU_INT | ||
392 | bool "Interrupt driven TAU driver (DANGEROUS)" | ||
393 | depends on TAU | ||
394 | ---help--- | ||
395 | The TAU supports an interrupt driven mode which causes an interrupt | ||
396 | whenever the temperature goes out of range. This is the fastest way | ||
397 | to get notified the temp has exceeded a range. With this option off, | ||
398 | a timer is used to re-check the temperature periodically. | ||
399 | |||
400 | However, on some cpus it appears that the TAU interrupt hardware | ||
401 | is buggy and can cause a situation which would lead unexplained hard | ||
402 | lockups. | ||
403 | |||
404 | Unless you are extending the TAU driver, or enjoy kernel/hardware | ||
405 | debugging, leave this option off. | ||
406 | |||
407 | config TAU_AVERAGE | ||
408 | bool "Average high and low temp" | ||
409 | depends on TAU | ||
410 | ---help--- | ||
411 | The TAU hardware can compare the temperature to an upper and lower | ||
412 | bound. The default behavior is to show both the upper and lower | ||
413 | bound in /proc/cpuinfo. If the range is large, the temperature is | ||
414 | either changing a lot, or the TAU hardware is broken (likely on some | ||
415 | G4's). If the range is small (around 4 degrees), the temperature is | ||
416 | relatively stable. If you say Y here, a single temperature value, | ||
417 | halfway between the upper and lower bounds, will be reported in | ||
418 | /proc/cpuinfo. | ||
419 | |||
420 | If in doubt, say N here. | ||
421 | endmenu | ||
422 | |||
423 | source arch/powerpc/platforms/embedded6xx/Kconfig | ||
424 | source arch/powerpc/platforms/4xx/Kconfig | ||
425 | source arch/powerpc/platforms/85xx/Kconfig | ||
426 | source arch/powerpc/platforms/8xx/Kconfig | ||
427 | |||
428 | menu "Kernel options" | ||
429 | |||
430 | config HIGHMEM | ||
431 | bool "High memory support" | ||
432 | depends on PPC32 | ||
433 | |||
434 | source kernel/Kconfig.hz | ||
435 | source kernel/Kconfig.preempt | ||
436 | source "fs/Kconfig.binfmt" | ||
437 | |||
438 | # We optimistically allocate largepages from the VM, so make the limit | ||
439 | # large enough (16MB). This badly named config option is actually | ||
440 | # max order + 1 | ||
441 | config FORCE_MAX_ZONEORDER | ||
442 | int | ||
443 | depends on PPC64 | ||
444 | default "13" | ||
445 | |||
446 | config MATH_EMULATION | ||
447 | bool "Math emulation" | ||
448 | depends on 4xx || 8xx || E200 || E500 | ||
449 | ---help--- | ||
450 | Some PowerPC chips designed for embedded applications do not have | ||
451 | a floating-point unit and therefore do not implement the | ||
452 | floating-point instructions in the PowerPC instruction set. If you | ||
453 | say Y here, the kernel will include code to emulate a floating-point | ||
454 | unit, which will allow programs that use floating-point | ||
455 | instructions to run. | ||
456 | |||
457 | config IOMMU_VMERGE | ||
458 | bool "Enable IOMMU virtual merging (EXPERIMENTAL)" | ||
459 | depends on EXPERIMENTAL && PPC64 | ||
460 | default n | ||
461 | help | ||
462 | Cause IO segments sent to a device for DMA to be merged virtually | ||
463 | by the IOMMU when they happen to have been allocated contiguously. | ||
464 | This doesn't add pressure to the IOMMU allocator. However, some | ||
465 | drivers don't support getting large merged segments coming back | ||
466 | from *_map_sg(). Say Y if you know the drivers you are using are | ||
467 | properly handling this case. | ||
468 | |||
469 | config HOTPLUG_CPU | ||
470 | bool "Support for enabling/disabling CPUs" | ||
471 | depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) | ||
472 | ---help--- | ||
473 | Say Y here to be able to disable and re-enable individual | ||
474 | CPUs at runtime on SMP machines. | ||
475 | |||
476 | Say N if you are unsure. | ||
477 | |||
478 | config KEXEC | ||
479 | bool "kexec system call (EXPERIMENTAL)" | ||
480 | depends on PPC_MULTIPLATFORM && EXPERIMENTAL | ||
481 | help | ||
482 | kexec is a system call that implements the ability to shutdown your | ||
483 | current kernel, and to start another kernel. It is like a reboot | ||
484 | but it is indepedent of the system firmware. And like a reboot | ||
485 | you can start any kernel with it, not just Linux. | ||
486 | |||
487 | The name comes from the similiarity to the exec system call. | ||
488 | |||
489 | It is an ongoing process to be certain the hardware in a machine | ||
490 | is properly shutdown, so do not be surprised if this code does not | ||
491 | initially work for you. It may help to enable device hotplugging | ||
492 | support. As of this writing the exact hardware interface is | ||
493 | strongly in flux, so no good recommendation can be made. | ||
494 | |||
495 | config EMBEDDEDBOOT | ||
496 | bool | ||
497 | depends on 8xx || 8260 | ||
498 | default y | ||
499 | |||
500 | config PC_KEYBOARD | ||
501 | bool "PC PS/2 style Keyboard" | ||
502 | depends on 4xx || CPM2 | ||
503 | |||
504 | config PPCBUG_NVRAM | ||
505 | bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC | ||
506 | default y if PPC_PREP | ||
507 | |||
508 | config IRQ_ALL_CPUS | ||
509 | bool "Distribute interrupts on all CPUs by default" | ||
510 | depends on SMP && !MV64360 | ||
511 | help | ||
512 | This option gives the kernel permission to distribute IRQs across | ||
513 | multiple CPUs. Saying N here will route all IRQs to the first | ||
514 | CPU. Generally saying Y is safe, although some problems have been | ||
515 | reported with SMP Power Macintoshes with this option enabled. | ||
516 | |||
517 | source "arch/powerpc/platforms/pseries/Kconfig" | ||
518 | |||
519 | config ARCH_SELECT_MEMORY_MODEL | ||
520 | def_bool y | ||
521 | depends on PPC64 | ||
522 | |||
523 | config ARCH_FLATMEM_ENABLE | ||
524 | def_bool y | ||
525 | depends on PPC64 && !NUMA | ||
526 | |||
527 | config ARCH_DISCONTIGMEM_ENABLE | ||
528 | def_bool y | ||
529 | depends on SMP && PPC_PSERIES | ||
530 | |||
531 | config ARCH_DISCONTIGMEM_DEFAULT | ||
532 | def_bool y | ||
533 | depends on ARCH_DISCONTIGMEM_ENABLE | ||
534 | |||
535 | config ARCH_FLATMEM_ENABLE | ||
536 | def_bool y | ||
537 | depends on PPC64 | ||
538 | |||
539 | config ARCH_SPARSEMEM_ENABLE | ||
540 | def_bool y | ||
541 | depends on ARCH_DISCONTIGMEM_ENABLE | ||
542 | |||
543 | source "mm/Kconfig" | ||
544 | |||
545 | config HAVE_ARCH_EARLY_PFN_TO_NID | ||
546 | def_bool y | ||
547 | depends on NEED_MULTIPLE_NODES | ||
548 | |||
549 | # Some NUMA nodes have memory ranges that span | ||
550 | # other nodes. Even though a pfn is valid and | ||
551 | # between a node's start and end pfns, it may not | ||
552 | # reside on that node. | ||
553 | # | ||
554 | # This is a relatively temporary hack that should | ||
555 | # be able to go away when sparsemem is fully in | ||
556 | # place | ||
557 | |||
558 | config NODES_SPAN_OTHER_NODES | ||
559 | def_bool y | ||
560 | depends on NEED_MULTIPLE_NODES | ||
561 | |||
562 | config NUMA | ||
563 | bool "NUMA support" | ||
564 | default y if DISCONTIGMEM || SPARSEMEM | ||
565 | |||
566 | config SCHED_SMT | ||
567 | bool "SMT (Hyperthreading) scheduler support" | ||
568 | depends on PPC64 && SMP | ||
569 | default off | ||
570 | help | ||
571 | SMT scheduler support improves the CPU scheduler's decision making | ||
572 | when dealing with POWER5 cpus at a cost of slightly increased | ||
573 | overhead in some places. If unsure say N here. | ||
574 | |||
575 | config PROC_DEVICETREE | ||
576 | bool "Support for Open Firmware device tree in /proc" | ||
577 | depends on PPC_OF && PROC_FS | ||
578 | help | ||
579 | This option adds a device-tree directory under /proc which contains | ||
580 | an image of the device tree that the kernel copies from Open | ||
581 | Firmware. If unsure, say Y here. | ||
582 | |||
583 | source "arch/powerpc/platforms/prep/Kconfig" | ||
584 | |||
585 | config CMDLINE_BOOL | ||
586 | bool "Default bootloader kernel arguments" | ||
587 | depends on !PPC_ISERIES | ||
588 | |||
589 | config CMDLINE | ||
590 | string "Initial kernel command string" | ||
591 | depends on CMDLINE_BOOL | ||
592 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | ||
593 | help | ||
594 | On some platforms, there is currently no way for the boot loader to | ||
595 | pass arguments to the kernel. For these platforms, you can supply | ||
596 | some command-line options at build time by entering them here. In | ||
597 | most cases you will need to specify the root device here. | ||
598 | |||
599 | if !44x || BROKEN | ||
600 | source kernel/power/Kconfig | ||
601 | endif | ||
602 | |||
603 | config SECCOMP | ||
604 | bool "Enable seccomp to safely compute untrusted bytecode" | ||
605 | depends on PROC_FS | ||
606 | default y | ||
607 | help | ||
608 | This kernel feature is useful for number crunching applications | ||
609 | that may need to compute untrusted bytecode during their | ||
610 | execution. By using pipes or other transports made available to | ||
611 | the process as file descriptors supporting the read/write | ||
612 | syscalls, it's possible to isolate those applications in | ||
613 | their own address space using seccomp. Once seccomp is | ||
614 | enabled via /proc/<pid>/seccomp, it cannot be disabled | ||
615 | and the task is only allowed to execute a few safe syscalls | ||
616 | defined by each seccomp mode. | ||
617 | |||
618 | If unsure, say Y. Only embedded should say N here. | ||
619 | |||
620 | endmenu | ||
621 | |||
622 | config ISA_DMA_API | ||
623 | bool | ||
624 | default y | ||
625 | |||
626 | menu "Bus options" | ||
627 | |||
628 | config ISA | ||
629 | bool "Support for ISA-bus hardware" | ||
630 | depends on PPC_PREP || PPC_CHRP | ||
631 | help | ||
632 | Find out whether you have ISA slots on your motherboard. ISA is the | ||
633 | name of a bus system, i.e. the way the CPU talks to the other stuff | ||
634 | inside your box. If you have an Apple machine, say N here; if you | ||
635 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If | ||
636 | you have an embedded board, consult your board documentation. | ||
637 | |||
638 | config GENERIC_ISA_DMA | ||
639 | bool | ||
640 | depends on PPC64 || POWER4 || 6xx && !CPM2 | ||
641 | default y | ||
642 | |||
643 | config EISA | ||
644 | bool | ||
645 | |||
646 | config SBUS | ||
647 | bool | ||
648 | |||
649 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any | ||
650 | config MCA | ||
651 | bool | ||
652 | |||
653 | config PCI | ||
654 | bool "PCI support" if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES) | ||
655 | default y if !40x && !CPM2 && !8xx && !APUS && !83xx && !85xx | ||
656 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS | ||
657 | default PCI_QSPAN if !4xx && !CPM2 && 8xx | ||
658 | help | ||
659 | Find out whether your system includes a PCI bus. PCI is the name of | ||
660 | a bus system, i.e. the way the CPU talks to the other stuff inside | ||
661 | your box. If you say Y here, the kernel will include drivers and | ||
662 | infrastructure code to support PCI bus devices. | ||
663 | |||
664 | config PCI_DOMAINS | ||
665 | bool | ||
666 | default PCI | ||
667 | |||
668 | config MPC83xx_PCI2 | ||
669 | bool " Supprt for 2nd PCI host controller" | ||
670 | depends on PCI && MPC834x | ||
671 | default y if MPC834x_SYS | ||
672 | |||
673 | config PCI_QSPAN | ||
674 | bool "QSpan PCI" | ||
675 | depends on !4xx && !CPM2 && 8xx | ||
676 | help | ||
677 | Say Y here if you have a system based on a Motorola 8xx-series | ||
678 | embedded processor with a QSPAN PCI interface, otherwise say N. | ||
679 | |||
680 | config PCI_8260 | ||
681 | bool | ||
682 | depends on PCI && 8260 | ||
683 | default y | ||
684 | |||
685 | config 8260_PCI9 | ||
686 | bool " Enable workaround for MPC826x erratum PCI 9" | ||
687 | depends on PCI_8260 && !ADS8272 | ||
688 | default y | ||
689 | |||
690 | choice | ||
691 | prompt " IDMA channel for PCI 9 workaround" | ||
692 | depends on 8260_PCI9 | ||
693 | |||
694 | config 8260_PCI9_IDMA1 | ||
695 | bool "IDMA1" | ||
696 | |||
697 | config 8260_PCI9_IDMA2 | ||
698 | bool "IDMA2" | ||
699 | |||
700 | config 8260_PCI9_IDMA3 | ||
701 | bool "IDMA3" | ||
702 | |||
703 | config 8260_PCI9_IDMA4 | ||
704 | bool "IDMA4" | ||
705 | |||
706 | endchoice | ||
707 | |||
708 | source "drivers/pci/Kconfig" | ||
709 | |||
710 | source "drivers/pcmcia/Kconfig" | ||
711 | |||
712 | source "drivers/pci/hotplug/Kconfig" | ||
713 | |||
714 | endmenu | ||
715 | |||
716 | menu "Advanced setup" | ||
717 | depends on PPC32 | ||
718 | |||
719 | config ADVANCED_OPTIONS | ||
720 | bool "Prompt for advanced kernel configuration options" | ||
721 | help | ||
722 | This option will enable prompting for a variety of advanced kernel | ||
723 | configuration options. These options can cause the kernel to not | ||
724 | work if they are set incorrectly, but can be used to optimize certain | ||
725 | aspects of kernel memory management. | ||
726 | |||
727 | Unless you know what you are doing, say N here. | ||
728 | |||
729 | comment "Default settings for advanced configuration options are used" | ||
730 | depends on !ADVANCED_OPTIONS | ||
731 | |||
732 | config HIGHMEM_START_BOOL | ||
733 | bool "Set high memory pool address" | ||
734 | depends on ADVANCED_OPTIONS && HIGHMEM | ||
735 | help | ||
736 | This option allows you to set the base address of the kernel virtual | ||
737 | area used to map high memory pages. This can be useful in | ||
738 | optimizing the layout of kernel virtual memory. | ||
739 | |||
740 | Say N here unless you know what you are doing. | ||
741 | |||
742 | config HIGHMEM_START | ||
743 | hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL | ||
744 | default "0xfe000000" | ||
745 | |||
746 | config LOWMEM_SIZE_BOOL | ||
747 | bool "Set maximum low memory" | ||
748 | depends on ADVANCED_OPTIONS | ||
749 | help | ||
750 | This option allows you to set the maximum amount of memory which | ||
751 | will be used as "low memory", that is, memory which the kernel can | ||
752 | access directly, without having to set up a kernel virtual mapping. | ||
753 | This can be useful in optimizing the layout of kernel virtual | ||
754 | memory. | ||
755 | |||
756 | Say N here unless you know what you are doing. | ||
757 | |||
758 | config LOWMEM_SIZE | ||
759 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | ||
760 | default "0x30000000" | ||
761 | |||
762 | config KERNEL_START_BOOL | ||
763 | bool "Set custom kernel base address" | ||
764 | depends on ADVANCED_OPTIONS | ||
765 | help | ||
766 | This option allows you to set the kernel virtual address at which | ||
767 | the kernel will map low memory (the kernel image will be linked at | ||
768 | this address). This can be useful in optimizing the virtual memory | ||
769 | layout of the system. | ||
770 | |||
771 | Say N here unless you know what you are doing. | ||
772 | |||
773 | config KERNEL_START | ||
774 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | ||
775 | default "0xc0000000" | ||
776 | |||
777 | config TASK_SIZE_BOOL | ||
778 | bool "Set custom user task size" | ||
779 | depends on ADVANCED_OPTIONS | ||
780 | help | ||
781 | This option allows you to set the amount of virtual address space | ||
782 | allocated to user tasks. This can be useful in optimizing the | ||
783 | virtual memory layout of the system. | ||
784 | |||
785 | Say N here unless you know what you are doing. | ||
786 | |||
787 | config TASK_SIZE | ||
788 | hex "Size of user task space" if TASK_SIZE_BOOL | ||
789 | default "0x80000000" | ||
790 | |||
791 | config CONSISTENT_START_BOOL | ||
792 | bool "Set custom consistent memory pool address" | ||
793 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | ||
794 | help | ||
795 | This option allows you to set the base virtual address | ||
796 | of the the consistent memory pool. This pool of virtual | ||
797 | memory is used to make consistent memory allocations. | ||
798 | |||
799 | config CONSISTENT_START | ||
800 | hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL | ||
801 | default "0xff100000" if NOT_COHERENT_CACHE | ||
802 | |||
803 | config CONSISTENT_SIZE_BOOL | ||
804 | bool "Set custom consistent memory pool size" | ||
805 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | ||
806 | help | ||
807 | This option allows you to set the size of the the | ||
808 | consistent memory pool. This pool of virtual memory | ||
809 | is used to make consistent memory allocations. | ||
810 | |||
811 | config CONSISTENT_SIZE | ||
812 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | ||
813 | default "0x00200000" if NOT_COHERENT_CACHE | ||
814 | |||
815 | config BOOT_LOAD_BOOL | ||
816 | bool "Set the boot link/load address" | ||
817 | depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM | ||
818 | help | ||
819 | This option allows you to set the initial load address of the zImage | ||
820 | or zImage.initrd file. This can be useful if you are on a board | ||
821 | which has a small amount of memory. | ||
822 | |||
823 | Say N here unless you know what you are doing. | ||
824 | |||
825 | config BOOT_LOAD | ||
826 | hex "Link/load address for booting" if BOOT_LOAD_BOOL | ||
827 | default "0x00400000" if 40x || 8xx || 8260 | ||
828 | default "0x01000000" if 44x | ||
829 | default "0x00800000" | ||
830 | |||
831 | config PIN_TLB | ||
832 | bool "Pinned Kernel TLBs (860 ONLY)" | ||
833 | depends on ADVANCED_OPTIONS && 8xx | ||
834 | endmenu | ||
835 | |||
836 | source "net/Kconfig" | ||
837 | |||
838 | source "drivers/Kconfig" | ||
839 | |||
840 | source "fs/Kconfig" | ||
841 | |||
842 | # XXX source "arch/ppc/8xx_io/Kconfig" | ||
843 | |||
844 | # XXX source "arch/ppc/8260_io/Kconfig" | ||
845 | |||
846 | source "arch/powerpc/platforms/iseries/Kconfig" | ||
847 | |||
848 | source "lib/Kconfig" | ||
849 | |||
850 | source "arch/powerpc/oprofile/Kconfig" | ||
851 | |||
852 | source "arch/powerpc/Kconfig.debug" | ||
853 | |||
854 | source "security/Kconfig" | ||
855 | |||
856 | config KEYS_COMPAT | ||
857 | bool | ||
858 | depends on COMPAT && KEYS | ||
859 | default y | ||
860 | |||
861 | source "crypto/Kconfig" | ||