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1 | source "arch/powerpc/platforms/Kconfig.cputype" | |
2 | ||
3 | config PPC32 | |
4 | bool | |
5 | default y if !PPC64 | |
6 | ||
7 | config 32BIT | |
8 | bool | |
9 | default y if PPC32 | |
10 | ||
11 | config 64BIT | |
12 | bool | |
13 | default y if PPC64 | |
14 | ||
15 | config WORD_SIZE | |
16 | int | |
17 | default 64 if PPC64 | |
18 | default 32 if !PPC64 | |
19 | ||
20 | config ARCH_PHYS_ADDR_T_64BIT | |
21 | def_bool PPC64 || PHYS_64BIT | |
22 | ||
23 | config ARCH_DMA_ADDR_T_64BIT | |
24 | def_bool ARCH_PHYS_ADDR_T_64BIT | |
25 | ||
26 | config MMU | |
27 | bool | |
28 | default y | |
29 | ||
30 | config HAVE_SETUP_PER_CPU_AREA | |
31 | def_bool PPC64 | |
32 | ||
33 | config NEED_PER_CPU_EMBED_FIRST_CHUNK | |
34 | def_bool PPC64 | |
35 | ||
36 | config NR_IRQS | |
37 | int "Number of virtual interrupt numbers" | |
38 | range 32 32768 | |
39 | default "512" | |
40 | help | |
41 | This defines the number of virtual interrupt numbers the kernel | |
42 | can manage. Virtual interrupt numbers are what you see in | |
43 | /proc/interrupts. If you configure your system to have too few, | |
44 | drivers will fail to load or worse - handle with care. | |
45 | ||
46 | config STACKTRACE_SUPPORT | |
47 | bool | |
48 | default y | |
49 | ||
50 | config HAVE_LATENCYTOP_SUPPORT | |
51 | def_bool y | |
52 | ||
53 | config TRACE_IRQFLAGS_SUPPORT | |
54 | bool | |
55 | default y | |
56 | ||
57 | config LOCKDEP_SUPPORT | |
58 | bool | |
59 | default y | |
60 | ||
61 | config RWSEM_GENERIC_SPINLOCK | |
62 | bool | |
63 | ||
64 | config RWSEM_XCHGADD_ALGORITHM | |
65 | bool | |
66 | default y | |
67 | ||
68 | config GENERIC_LOCKBREAK | |
69 | bool | |
70 | default y | |
71 | depends on SMP && PREEMPT | |
72 | ||
73 | config ARCH_HAS_ILOG2_U32 | |
74 | bool | |
75 | default y | |
76 | ||
77 | config ARCH_HAS_ILOG2_U64 | |
78 | bool | |
79 | default y if 64BIT | |
80 | ||
81 | config GENERIC_HWEIGHT | |
82 | bool | |
83 | default y | |
84 | ||
85 | config GENERIC_GPIO | |
86 | bool | |
87 | help | |
88 | Generic GPIO API support | |
89 | ||
90 | config PPC | |
91 | bool | |
92 | default y | |
93 | select BINFMT_ELF | |
94 | select OF | |
95 | select OF_EARLY_FLATTREE | |
96 | select HAVE_FTRACE_MCOUNT_RECORD | |
97 | select HAVE_DYNAMIC_FTRACE | |
98 | select HAVE_FUNCTION_TRACER | |
99 | select HAVE_FUNCTION_GRAPH_TRACER | |
100 | select SYSCTL_EXCEPTION_TRACE | |
101 | select ARCH_WANT_OPTIONAL_GPIOLIB | |
102 | select VIRT_TO_BUS if !PPC64 | |
103 | select HAVE_IDE | |
104 | select HAVE_IOREMAP_PROT | |
105 | select HAVE_EFFICIENT_UNALIGNED_ACCESS | |
106 | select HAVE_KPROBES | |
107 | select HAVE_ARCH_KGDB | |
108 | select HAVE_KRETPROBES | |
109 | select HAVE_ARCH_TRACEHOOK | |
110 | select HAVE_MEMBLOCK | |
111 | select HAVE_MEMBLOCK_NODE_MAP | |
112 | select HAVE_DMA_ATTRS | |
113 | select HAVE_DMA_API_DEBUG | |
114 | select USE_GENERIC_SMP_HELPERS if SMP | |
115 | select HAVE_OPROFILE | |
116 | select HAVE_DEBUG_KMEMLEAK | |
117 | select HAVE_SYSCALL_WRAPPERS if PPC64 | |
118 | select GENERIC_ATOMIC64 if PPC32 | |
119 | select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE | |
120 | select HAVE_PERF_EVENTS | |
121 | select HAVE_REGS_AND_STACK_ACCESS_API | |
122 | select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 | |
123 | select HAVE_GENERIC_HARDIRQS | |
124 | select ARCH_WANT_IPC_PARSE_VERSION | |
125 | select SPARSE_IRQ | |
126 | select IRQ_DOMAIN | |
127 | select GENERIC_IRQ_SHOW | |
128 | select GENERIC_IRQ_SHOW_LEVEL | |
129 | select IRQ_FORCED_THREADING | |
130 | select HAVE_RCU_TABLE_FREE if SMP | |
131 | select HAVE_SYSCALL_TRACEPOINTS | |
132 | select HAVE_BPF_JIT if PPC64 | |
133 | select HAVE_ARCH_JUMP_LABEL | |
134 | select ARCH_HAVE_NMI_SAFE_CMPXCHG | |
135 | select GENERIC_SMP_IDLE_THREAD | |
136 | select GENERIC_CMOS_UPDATE | |
137 | select GENERIC_TIME_VSYSCALL_OLD | |
138 | select GENERIC_CLOCKEVENTS | |
139 | select GENERIC_STRNCPY_FROM_USER | |
140 | select GENERIC_STRNLEN_USER | |
141 | select HAVE_MOD_ARCH_SPECIFIC | |
142 | select MODULES_USE_ELF_RELA | |
143 | select CLONE_BACKWARDS | |
144 | select ARCH_USE_BUILTIN_BSWAP | |
145 | select OLD_SIGSUSPEND | |
146 | select OLD_SIGACTION if PPC32 | |
147 | ||
148 | config EARLY_PRINTK | |
149 | bool | |
150 | default y | |
151 | ||
152 | config COMPAT | |
153 | bool | |
154 | default y if PPC64 | |
155 | select COMPAT_BINFMT_ELF | |
156 | select ARCH_WANT_OLD_COMPAT_IPC | |
157 | select COMPAT_OLD_SIGACTION | |
158 | ||
159 | config SYSVIPC_COMPAT | |
160 | bool | |
161 | depends on COMPAT && SYSVIPC | |
162 | default y | |
163 | ||
164 | # All PPC32s use generic nvram driver through ppc_md | |
165 | config GENERIC_NVRAM | |
166 | bool | |
167 | default y if PPC32 | |
168 | ||
169 | config SCHED_OMIT_FRAME_POINTER | |
170 | bool | |
171 | default y | |
172 | ||
173 | config ARCH_MAY_HAVE_PC_FDC | |
174 | bool | |
175 | default !PPC_PSERIES || PCI | |
176 | ||
177 | config PPC_OF | |
178 | def_bool y | |
179 | ||
180 | config PPC_UDBG_16550 | |
181 | bool | |
182 | default n | |
183 | ||
184 | config GENERIC_TBSYNC | |
185 | bool | |
186 | default y if PPC32 && SMP | |
187 | default n | |
188 | ||
189 | config AUDIT_ARCH | |
190 | bool | |
191 | default y | |
192 | ||
193 | config GENERIC_BUG | |
194 | bool | |
195 | default y | |
196 | depends on BUG | |
197 | ||
198 | config SYS_SUPPORTS_APM_EMULATION | |
199 | default y if PMAC_APM_EMU | |
200 | bool | |
201 | ||
202 | config EPAPR_BOOT | |
203 | bool | |
204 | help | |
205 | Used to allow a board to specify it wants an ePAPR compliant wrapper. | |
206 | default n | |
207 | ||
208 | config DEFAULT_UIMAGE | |
209 | bool | |
210 | help | |
211 | Used to allow a board to specify it wants a uImage built by default | |
212 | default n | |
213 | ||
214 | config REDBOOT | |
215 | bool | |
216 | ||
217 | config ARCH_HIBERNATION_POSSIBLE | |
218 | bool | |
219 | default y | |
220 | ||
221 | config ARCH_SUSPEND_POSSIBLE | |
222 | def_bool y | |
223 | depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ | |
224 | (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \ | |
225 | || 44x || 40x | |
226 | ||
227 | config PPC_DCR_NATIVE | |
228 | bool | |
229 | default n | |
230 | ||
231 | config PPC_DCR_MMIO | |
232 | bool | |
233 | default n | |
234 | ||
235 | config PPC_DCR | |
236 | bool | |
237 | depends on PPC_DCR_NATIVE || PPC_DCR_MMIO | |
238 | default y | |
239 | ||
240 | config PPC_OF_PLATFORM_PCI | |
241 | bool | |
242 | depends on PCI | |
243 | depends on PPC64 # not supported on 32 bits yet | |
244 | default n | |
245 | ||
246 | config ARCH_SUPPORTS_DEBUG_PAGEALLOC | |
247 | def_bool y | |
248 | ||
249 | config ARCH_SUPPORTS_UPROBES | |
250 | def_bool y | |
251 | ||
252 | config PPC_ADV_DEBUG_REGS | |
253 | bool | |
254 | depends on 40x || BOOKE | |
255 | default y | |
256 | ||
257 | config PPC_ADV_DEBUG_IACS | |
258 | int | |
259 | depends on PPC_ADV_DEBUG_REGS | |
260 | default 4 if 44x | |
261 | default 2 | |
262 | ||
263 | config PPC_ADV_DEBUG_DACS | |
264 | int | |
265 | depends on PPC_ADV_DEBUG_REGS | |
266 | default 2 | |
267 | ||
268 | config PPC_ADV_DEBUG_DVCS | |
269 | int | |
270 | depends on PPC_ADV_DEBUG_REGS | |
271 | default 2 if 44x | |
272 | default 0 | |
273 | ||
274 | config PPC_ADV_DEBUG_DAC_RANGE | |
275 | bool | |
276 | depends on PPC_ADV_DEBUG_REGS && 44x | |
277 | default y | |
278 | ||
279 | config PPC_EMULATE_SSTEP | |
280 | bool | |
281 | default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT | |
282 | ||
283 | source "init/Kconfig" | |
284 | ||
285 | source "kernel/Kconfig.freezer" | |
286 | ||
287 | source "arch/powerpc/sysdev/Kconfig" | |
288 | source "arch/powerpc/platforms/Kconfig" | |
289 | ||
290 | menu "Kernel options" | |
291 | ||
292 | config HIGHMEM | |
293 | bool "High memory support" | |
294 | depends on PPC32 | |
295 | ||
296 | source kernel/Kconfig.hz | |
297 | source kernel/Kconfig.preempt | |
298 | source "fs/Kconfig.binfmt" | |
299 | ||
300 | config HUGETLB_PAGE_SIZE_VARIABLE | |
301 | bool | |
302 | depends on HUGETLB_PAGE | |
303 | default y | |
304 | ||
305 | config MATH_EMULATION | |
306 | bool "Math emulation" | |
307 | depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 | |
308 | ---help--- | |
309 | Some PowerPC chips designed for embedded applications do not have | |
310 | a floating-point unit and therefore do not implement the | |
311 | floating-point instructions in the PowerPC instruction set. If you | |
312 | say Y here, the kernel will include code to emulate a floating-point | |
313 | unit, which will allow programs that use floating-point | |
314 | instructions to run. | |
315 | ||
316 | config PPC_TRANSACTIONAL_MEM | |
317 | bool "Transactional Memory support for POWERPC" | |
318 | depends on PPC_BOOK3S_64 | |
319 | depends on SMP | |
320 | default n | |
321 | ---help--- | |
322 | Support user-mode Transactional Memory on POWERPC. | |
323 | ||
324 | config 8XX_MINIMAL_FPEMU | |
325 | bool "Minimal math emulation for 8xx" | |
326 | depends on 8xx && !MATH_EMULATION | |
327 | help | |
328 | Older arch/ppc kernels still emulated a few floating point | |
329 | instructions such as load and store, even when full math | |
330 | emulation is disabled. Say "Y" here if you want to preserve | |
331 | this behavior. | |
332 | ||
333 | It is recommended that you build a soft-float userspace instead. | |
334 | ||
335 | config IOMMU_HELPER | |
336 | def_bool PPC64 | |
337 | ||
338 | config SWIOTLB | |
339 | bool "SWIOTLB support" | |
340 | default n | |
341 | select IOMMU_HELPER | |
342 | ---help--- | |
343 | Support for IO bounce buffering for systems without an IOMMU. | |
344 | This allows us to DMA to the full physical address space on | |
345 | platforms where the size of a physical address is larger | |
346 | than the bus address. Not all platforms support this. | |
347 | ||
348 | config HOTPLUG_CPU | |
349 | bool "Support for enabling/disabling CPUs" | |
350 | depends on SMP && HOTPLUG && (PPC_PSERIES || \ | |
351 | PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC)) | |
352 | ---help--- | |
353 | Say Y here to be able to disable and re-enable individual | |
354 | CPUs at runtime on SMP machines. | |
355 | ||
356 | Say N if you are unsure. | |
357 | ||
358 | config ARCH_CPU_PROBE_RELEASE | |
359 | def_bool y | |
360 | depends on HOTPLUG_CPU | |
361 | ||
362 | config ARCH_ENABLE_MEMORY_HOTPLUG | |
363 | def_bool y | |
364 | ||
365 | config ARCH_HAS_WALK_MEMORY | |
366 | def_bool y | |
367 | ||
368 | config ARCH_ENABLE_MEMORY_HOTREMOVE | |
369 | def_bool y | |
370 | ||
371 | config KEXEC | |
372 | bool "kexec system call" | |
373 | depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) | |
374 | help | |
375 | kexec is a system call that implements the ability to shutdown your | |
376 | current kernel, and to start another kernel. It is like a reboot | |
377 | but it is independent of the system firmware. And like a reboot | |
378 | you can start any kernel with it, not just Linux. | |
379 | ||
380 | The name comes from the similarity to the exec system call. | |
381 | ||
382 | It is an ongoing process to be certain the hardware in a machine | |
383 | is properly shutdown, so do not be surprised if this code does not | |
384 | initially work for you. It may help to enable device hotplugging | |
385 | support. As of this writing the exact hardware interface is | |
386 | strongly in flux, so no good recommendation can be made. | |
387 | ||
388 | config CRASH_DUMP | |
389 | bool "Build a kdump crash kernel" | |
390 | depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) | |
391 | select RELOCATABLE if PPC64 || 44x | |
392 | select DYNAMIC_MEMSTART if FSL_BOOKE | |
393 | help | |
394 | Build a kernel suitable for use as a kdump capture kernel. | |
395 | The same kernel binary can be used as production kernel and dump | |
396 | capture kernel. | |
397 | ||
398 | config FA_DUMP | |
399 | bool "Firmware-assisted dump" | |
400 | depends on PPC64 && PPC_RTAS && CRASH_DUMP | |
401 | help | |
402 | A robust mechanism to get reliable kernel crash dump with | |
403 | assistance from firmware. This approach does not use kexec, | |
404 | instead firmware assists in booting the kdump kernel | |
405 | while preserving memory contents. Firmware-assisted dump | |
406 | is meant to be a kdump replacement offering robustness and | |
407 | speed not possible without system firmware assistance. | |
408 | ||
409 | If unsure, say "N" | |
410 | ||
411 | config IRQ_ALL_CPUS | |
412 | bool "Distribute interrupts on all CPUs by default" | |
413 | depends on SMP && !MV64360 | |
414 | help | |
415 | This option gives the kernel permission to distribute IRQs across | |
416 | multiple CPUs. Saying N here will route all IRQs to the first | |
417 | CPU. Generally saying Y is safe, although some problems have been | |
418 | reported with SMP Power Macintoshes with this option enabled. | |
419 | ||
420 | config NUMA | |
421 | bool "NUMA support" | |
422 | depends on PPC64 | |
423 | default y if SMP && PPC_PSERIES | |
424 | ||
425 | config NODES_SHIFT | |
426 | int | |
427 | default "8" if PPC64 | |
428 | default "4" | |
429 | depends on NEED_MULTIPLE_NODES | |
430 | ||
431 | config MAX_ACTIVE_REGIONS | |
432 | int | |
433 | default "256" if PPC64 | |
434 | default "32" | |
435 | ||
436 | config ARCH_SELECT_MEMORY_MODEL | |
437 | def_bool y | |
438 | depends on PPC64 | |
439 | ||
440 | config ARCH_FLATMEM_ENABLE | |
441 | def_bool y | |
442 | depends on (PPC64 && !NUMA) || PPC32 | |
443 | ||
444 | config ARCH_SPARSEMEM_ENABLE | |
445 | def_bool y | |
446 | depends on PPC64 | |
447 | select SPARSEMEM_VMEMMAP_ENABLE | |
448 | ||
449 | config ARCH_SPARSEMEM_DEFAULT | |
450 | def_bool y | |
451 | depends on (SMP && PPC_PSERIES) || PPC_PS3 | |
452 | ||
453 | config SYS_SUPPORTS_HUGETLBFS | |
454 | bool | |
455 | ||
456 | source "mm/Kconfig" | |
457 | ||
458 | config ARCH_MEMORY_PROBE | |
459 | def_bool y | |
460 | depends on MEMORY_HOTPLUG | |
461 | ||
462 | # Some NUMA nodes have memory ranges that span | |
463 | # other nodes. Even though a pfn is valid and | |
464 | # between a node's start and end pfns, it may not | |
465 | # reside on that node. See memmap_init_zone() | |
466 | # for details. | |
467 | config NODES_SPAN_OTHER_NODES | |
468 | def_bool y | |
469 | depends on NEED_MULTIPLE_NODES | |
470 | ||
471 | config PPC_HAS_HASH_64K | |
472 | bool | |
473 | depends on PPC64 | |
474 | default n | |
475 | ||
476 | config STDBINUTILS | |
477 | bool "Using standard binutils settings" | |
478 | depends on 44x | |
479 | default y | |
480 | help | |
481 | Turning this option off allows you to select 256KB PAGE_SIZE on 44x. | |
482 | Note, that kernel will be able to run only those applications, | |
483 | which had been compiled using binutils later than 2.17.50.0.3 with | |
484 | '-zmax-page-size' set to 256K (the default is 64K). Or, if using | |
485 | the older binutils, you can patch them with a trivial patch, which | |
486 | changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. | |
487 | ||
488 | choice | |
489 | prompt "Page size" | |
490 | default PPC_4K_PAGES | |
491 | help | |
492 | Select the kernel logical page size. Increasing the page size | |
493 | will reduce software overhead at each page boundary, allow | |
494 | hardware prefetch mechanisms to be more effective, and allow | |
495 | larger dma transfers increasing IO efficiency and reducing | |
496 | overhead. However the utilization of memory will increase. | |
497 | For example, each cached file will using a multiple of the | |
498 | page size to hold its contents and the difference between the | |
499 | end of file and the end of page is wasted. | |
500 | ||
501 | Some dedicated systems, such as software raid serving with | |
502 | accelerated calculations, have shown significant increases. | |
503 | ||
504 | If you configure a 64 bit kernel for 64k pages but the | |
505 | processor does not support them, then the kernel will simulate | |
506 | them with 4k pages, loading them on demand, but with the | |
507 | reduced software overhead and larger internal fragmentation. | |
508 | For the 32 bit kernel, a large page option will not be offered | |
509 | unless it is supported by the configured processor. | |
510 | ||
511 | If unsure, choose 4K_PAGES. | |
512 | ||
513 | config PPC_4K_PAGES | |
514 | bool "4k page size" | |
515 | ||
516 | config PPC_16K_PAGES | |
517 | bool "16k page size" if 44x | |
518 | ||
519 | config PPC_64K_PAGES | |
520 | bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 | |
521 | select PPC_HAS_HASH_64K if PPC_STD_MMU_64 | |
522 | ||
523 | config PPC_256K_PAGES | |
524 | bool "256k page size" if 44x | |
525 | depends on !STDBINUTILS | |
526 | help | |
527 | Make the page size 256k. | |
528 | ||
529 | As the ELF standard only requires alignment to support page | |
530 | sizes up to 64k, you will need to compile all of your user | |
531 | space applications with a non-standard binutils settings | |
532 | (see the STDBINUTILS description for details). | |
533 | ||
534 | Say N unless you know what you are doing. | |
535 | ||
536 | endchoice | |
537 | ||
538 | config FORCE_MAX_ZONEORDER | |
539 | int "Maximum zone order" | |
540 | range 9 64 if PPC64 && PPC_64K_PAGES | |
541 | default "9" if PPC64 && PPC_64K_PAGES | |
542 | range 13 64 if PPC64 && !PPC_64K_PAGES | |
543 | default "13" if PPC64 && !PPC_64K_PAGES | |
544 | range 9 64 if PPC32 && PPC_16K_PAGES | |
545 | default "9" if PPC32 && PPC_16K_PAGES | |
546 | range 7 64 if PPC32 && PPC_64K_PAGES | |
547 | default "7" if PPC32 && PPC_64K_PAGES | |
548 | range 5 64 if PPC32 && PPC_256K_PAGES | |
549 | default "5" if PPC32 && PPC_256K_PAGES | |
550 | range 11 64 | |
551 | default "11" | |
552 | help | |
553 | The kernel memory allocator divides physically contiguous memory | |
554 | blocks into "zones", where each zone is a power of two number of | |
555 | pages. This option selects the largest power of two that the kernel | |
556 | keeps in the memory allocator. If you need to allocate very large | |
557 | blocks of physically contiguous memory, then you may need to | |
558 | increase this value. | |
559 | ||
560 | This config option is actually maximum order plus one. For example, | |
561 | a value of 11 means that the largest free memory block is 2^10 pages. | |
562 | ||
563 | The page size is not necessarily 4KB. For example, on 64-bit | |
564 | systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep | |
565 | this in mind when choosing a value for this option. | |
566 | ||
567 | config PPC_SUBPAGE_PROT | |
568 | bool "Support setting protections for 4k subpages" | |
569 | depends on PPC_STD_MMU_64 && PPC_64K_PAGES | |
570 | help | |
571 | This option adds support for a system call to allow user programs | |
572 | to set access permissions (read/write, readonly, or no access) | |
573 | on the 4k subpages of each 64k page. | |
574 | ||
575 | config SCHED_SMT | |
576 | bool "SMT (Hyperthreading) scheduler support" | |
577 | depends on PPC64 && SMP | |
578 | help | |
579 | SMT scheduler support improves the CPU scheduler's decision making | |
580 | when dealing with POWER5 cpus at a cost of slightly increased | |
581 | overhead in some places. If unsure say N here. | |
582 | ||
583 | config PPC_DENORMALISATION | |
584 | bool "PowerPC denormalisation exception handling" | |
585 | depends on PPC_BOOK3S_64 | |
586 | default "n" | |
587 | ---help--- | |
588 | Add support for handling denormalisation of single precision | |
589 | values. Useful for bare metal only. If unsure say Y here. | |
590 | ||
591 | config CMDLINE_BOOL | |
592 | bool "Default bootloader kernel arguments" | |
593 | ||
594 | config CMDLINE | |
595 | string "Initial kernel command string" | |
596 | depends on CMDLINE_BOOL | |
597 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
598 | help | |
599 | On some platforms, there is currently no way for the boot loader to | |
600 | pass arguments to the kernel. For these platforms, you can supply | |
601 | some command-line options at build time by entering them here. In | |
602 | most cases you will need to specify the root device here. | |
603 | ||
604 | config EXTRA_TARGETS | |
605 | string "Additional default image types" | |
606 | help | |
607 | List additional targets to be built by the bootwrapper here (separated | |
608 | by spaces). This is useful for targets that depend of device tree | |
609 | files in the .dts directory. | |
610 | ||
611 | Targets in this list will be build as part of the default build | |
612 | target, or when the user does a 'make zImage' or a | |
613 | 'make zImage.initrd'. | |
614 | ||
615 | If unsure, leave blank | |
616 | ||
617 | config ARCH_WANTS_FREEZER_CONTROL | |
618 | def_bool y | |
619 | depends on ADB_PMU | |
620 | ||
621 | source kernel/power/Kconfig | |
622 | ||
623 | config SECCOMP | |
624 | bool "Enable seccomp to safely compute untrusted bytecode" | |
625 | depends on PROC_FS | |
626 | default y | |
627 | help | |
628 | This kernel feature is useful for number crunching applications | |
629 | that may need to compute untrusted bytecode during their | |
630 | execution. By using pipes or other transports made available to | |
631 | the process as file descriptors supporting the read/write | |
632 | syscalls, it's possible to isolate those applications in | |
633 | their own address space using seccomp. Once seccomp is | |
634 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
635 | and the task is only allowed to execute a few safe syscalls | |
636 | defined by each seccomp mode. | |
637 | ||
638 | If unsure, say Y. Only embedded should say N here. | |
639 | ||
640 | endmenu | |
641 | ||
642 | config ISA_DMA_API | |
643 | bool | |
644 | default PCI | |
645 | ||
646 | menu "Bus options" | |
647 | ||
648 | config ISA | |
649 | bool "Support for ISA-bus hardware" | |
650 | depends on PPC_PREP || PPC_CHRP | |
651 | select PPC_I8259 | |
652 | help | |
653 | Find out whether you have ISA slots on your motherboard. ISA is the | |
654 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
655 | inside your box. If you have an Apple machine, say N here; if you | |
656 | have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If | |
657 | you have an embedded board, consult your board documentation. | |
658 | ||
659 | config ZONE_DMA | |
660 | bool | |
661 | default y | |
662 | ||
663 | config NEED_DMA_MAP_STATE | |
664 | def_bool (PPC64 || NOT_COHERENT_CACHE) | |
665 | ||
666 | config NEED_SG_DMA_LENGTH | |
667 | def_bool y | |
668 | ||
669 | config GENERIC_ISA_DMA | |
670 | bool | |
671 | depends on ISA_DMA_API | |
672 | default y | |
673 | ||
674 | config PPC_INDIRECT_PCI | |
675 | bool | |
676 | depends on PCI | |
677 | default y if 40x || 44x | |
678 | default n | |
679 | ||
680 | config EISA | |
681 | bool | |
682 | ||
683 | config SBUS | |
684 | bool | |
685 | ||
686 | config FSL_SOC | |
687 | bool | |
688 | select HAVE_CAN_FLEXCAN if NET && CAN | |
689 | select PPC_CLOCK | |
690 | ||
691 | config FSL_PCI | |
692 | bool | |
693 | select PPC_INDIRECT_PCI | |
694 | select PCI_QUIRKS | |
695 | ||
696 | config FSL_PMC | |
697 | bool | |
698 | default y | |
699 | depends on SUSPEND && (PPC_85xx || PPC_86xx) | |
700 | help | |
701 | Freescale MPC85xx/MPC86xx power management controller support | |
702 | (suspend/resume). For MPC83xx see platforms/83xx/suspend.c | |
703 | ||
704 | config PPC4xx_CPM | |
705 | bool | |
706 | default y | |
707 | depends on SUSPEND && (44x || 40x) | |
708 | help | |
709 | PPC4xx Clock Power Management (CPM) support (suspend/resume). | |
710 | It also enables support for two different idle states (idle-wait | |
711 | and idle-doze). | |
712 | ||
713 | config 4xx_SOC | |
714 | bool | |
715 | ||
716 | config FSL_LBC | |
717 | bool "Freescale Local Bus support" | |
718 | depends on FSL_SOC | |
719 | help | |
720 | Enables reporting of errors from the Freescale local bus | |
721 | controller. Also contains some common code used by | |
722 | drivers for specific local bus peripherals. | |
723 | ||
724 | config FSL_IFC | |
725 | bool | |
726 | depends on FSL_SOC | |
727 | ||
728 | config FSL_GTM | |
729 | bool | |
730 | depends on PPC_83xx || QUICC_ENGINE || CPM2 | |
731 | help | |
732 | Freescale General-purpose Timers support | |
733 | ||
734 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any | |
735 | config MCA | |
736 | bool | |
737 | ||
738 | # Platforms that what PCI turned unconditionally just do select PCI | |
739 | # in their config node. Platforms that want to choose at config | |
740 | # time should select PPC_PCI_CHOICE | |
741 | config PPC_PCI_CHOICE | |
742 | bool | |
743 | ||
744 | config PCI | |
745 | bool "PCI support" if PPC_PCI_CHOICE | |
746 | default y if !40x && !CPM2 && !8xx && !PPC_83xx \ | |
747 | && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON | |
748 | default PCI_PERMEDIA if !4xx && !CPM2 && !8xx | |
749 | default PCI_QSPAN if !4xx && !CPM2 && 8xx | |
750 | select ARCH_SUPPORTS_MSI | |
751 | select GENERIC_PCI_IOMAP | |
752 | help | |
753 | Find out whether your system includes a PCI bus. PCI is the name of | |
754 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
755 | your box. If you say Y here, the kernel will include drivers and | |
756 | infrastructure code to support PCI bus devices. | |
757 | ||
758 | config PCI_DOMAINS | |
759 | def_bool PCI | |
760 | ||
761 | config PCI_SYSCALL | |
762 | def_bool PCI | |
763 | ||
764 | config PCI_QSPAN | |
765 | bool "QSpan PCI" | |
766 | depends on !4xx && !CPM2 && 8xx | |
767 | select PPC_I8259 | |
768 | help | |
769 | Say Y here if you have a system based on a Motorola 8xx-series | |
770 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
771 | ||
772 | config PCI_8260 | |
773 | bool | |
774 | depends on PCI && 8260 | |
775 | select PPC_INDIRECT_PCI | |
776 | default y | |
777 | ||
778 | config 8260_PCI9 | |
779 | bool "Enable workaround for MPC826x erratum PCI 9" | |
780 | depends on PCI_8260 && !8272 | |
781 | default y | |
782 | ||
783 | source "drivers/pci/pcie/Kconfig" | |
784 | ||
785 | source "drivers/pci/Kconfig" | |
786 | ||
787 | source "drivers/pcmcia/Kconfig" | |
788 | ||
789 | source "drivers/pci/hotplug/Kconfig" | |
790 | ||
791 | config HAS_RAPIDIO | |
792 | bool | |
793 | default n | |
794 | ||
795 | config RAPIDIO | |
796 | bool "RapidIO support" | |
797 | depends on HAS_RAPIDIO || PCI | |
798 | help | |
799 | If you say Y here, the kernel will include drivers and | |
800 | infrastructure code to support RapidIO interconnect devices. | |
801 | ||
802 | config FSL_RIO | |
803 | bool "Freescale Embedded SRIO Controller support" | |
804 | depends on RAPIDIO && HAS_RAPIDIO | |
805 | default "n" | |
806 | ---help--- | |
807 | Include support for RapidIO controller on Freescale embedded | |
808 | processors (MPC8548, MPC8641, etc). | |
809 | ||
810 | source "drivers/rapidio/Kconfig" | |
811 | ||
812 | endmenu | |
813 | ||
814 | config NONSTATIC_KERNEL | |
815 | bool | |
816 | default n | |
817 | ||
818 | menu "Advanced setup" | |
819 | depends on PPC32 | |
820 | ||
821 | config ADVANCED_OPTIONS | |
822 | bool "Prompt for advanced kernel configuration options" | |
823 | help | |
824 | This option will enable prompting for a variety of advanced kernel | |
825 | configuration options. These options can cause the kernel to not | |
826 | work if they are set incorrectly, but can be used to optimize certain | |
827 | aspects of kernel memory management. | |
828 | ||
829 | Unless you know what you are doing, say N here. | |
830 | ||
831 | comment "Default settings for advanced configuration options are used" | |
832 | depends on !ADVANCED_OPTIONS | |
833 | ||
834 | config LOWMEM_SIZE_BOOL | |
835 | bool "Set maximum low memory" | |
836 | depends on ADVANCED_OPTIONS | |
837 | help | |
838 | This option allows you to set the maximum amount of memory which | |
839 | will be used as "low memory", that is, memory which the kernel can | |
840 | access directly, without having to set up a kernel virtual mapping. | |
841 | This can be useful in optimizing the layout of kernel virtual | |
842 | memory. | |
843 | ||
844 | Say N here unless you know what you are doing. | |
845 | ||
846 | config LOWMEM_SIZE | |
847 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
848 | default "0x30000000" | |
849 | ||
850 | config LOWMEM_CAM_NUM_BOOL | |
851 | bool "Set number of CAMs to use to map low memory" | |
852 | depends on ADVANCED_OPTIONS && FSL_BOOKE | |
853 | help | |
854 | This option allows you to set the maximum number of CAM slots that | |
855 | will be used to map low memory. There are a limited number of slots | |
856 | available and even more limited number that will fit in the L1 MMU. | |
857 | However, using more entries will allow mapping more low memory. This | |
858 | can be useful in optimizing the layout of kernel virtual memory. | |
859 | ||
860 | Say N here unless you know what you are doing. | |
861 | ||
862 | config LOWMEM_CAM_NUM | |
863 | depends on FSL_BOOKE | |
864 | int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL | |
865 | default 3 | |
866 | ||
867 | config DYNAMIC_MEMSTART | |
868 | bool "Enable page aligned dynamic load address for kernel" | |
869 | depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) | |
870 | select NONSTATIC_KERNEL | |
871 | help | |
872 | This option enables the kernel to be loaded at any page aligned | |
873 | physical address. The kernel creates a mapping from KERNELBASE to | |
874 | the address where the kernel is loaded. The page size here implies | |
875 | the TLB page size of the mapping for kernel on the particular platform. | |
876 | Please refer to the init code for finding the TLB page size. | |
877 | ||
878 | DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE | |
879 | kernel image, where the only restriction is the page aligned kernel | |
880 | load address. When this option is enabled, the compile time physical | |
881 | address CONFIG_PHYSICAL_START is ignored. | |
882 | ||
883 | This option is overridden by CONFIG_RELOCATABLE | |
884 | ||
885 | config RELOCATABLE | |
886 | bool "Build a relocatable kernel" | |
887 | depends on ADVANCED_OPTIONS && FLATMEM && 44x | |
888 | select NONSTATIC_KERNEL | |
889 | help | |
890 | This builds a kernel image that is capable of running at the | |
891 | location the kernel is loaded at, without any alignment restrictions. | |
892 | This feature is a superset of DYNAMIC_MEMSTART and hence overrides it. | |
893 | ||
894 | One use is for the kexec on panic case where the recovery kernel | |
895 | must live at a different physical address than the primary | |
896 | kernel. | |
897 | ||
898 | Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address | |
899 | it has been loaded at and the compile time physical addresses | |
900 | CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START | |
901 | setting can still be useful to bootwrappers that need to know the | |
902 | load address of the kernel (eg. u-boot/mkimage). | |
903 | ||
904 | config RELOCATABLE_PPC32 | |
905 | def_bool y | |
906 | depends on PPC32 && RELOCATABLE | |
907 | ||
908 | config PAGE_OFFSET_BOOL | |
909 | bool "Set custom page offset address" | |
910 | depends on ADVANCED_OPTIONS | |
911 | help | |
912 | This option allows you to set the kernel virtual address at which | |
913 | the kernel will map low memory. This can be useful in optimizing | |
914 | the virtual memory layout of the system. | |
915 | ||
916 | Say N here unless you know what you are doing. | |
917 | ||
918 | config PAGE_OFFSET | |
919 | hex "Virtual address of memory base" if PAGE_OFFSET_BOOL | |
920 | default "0xc0000000" | |
921 | ||
922 | config KERNEL_START_BOOL | |
923 | bool "Set custom kernel base address" | |
924 | depends on ADVANCED_OPTIONS | |
925 | help | |
926 | This option allows you to set the kernel virtual address at which | |
927 | the kernel will be loaded. Normally this should match PAGE_OFFSET | |
928 | however there are times (like kdump) that one might not want them | |
929 | to be the same. | |
930 | ||
931 | Say N here unless you know what you are doing. | |
932 | ||
933 | config KERNEL_START | |
934 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
935 | default PAGE_OFFSET if PAGE_OFFSET_BOOL | |
936 | default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL | |
937 | default "0xc0000000" | |
938 | ||
939 | config PHYSICAL_START_BOOL | |
940 | bool "Set physical address where the kernel is loaded" | |
941 | depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
942 | help | |
943 | This gives the physical address where the kernel is loaded. | |
944 | ||
945 | Say N here unless you know what you are doing. | |
946 | ||
947 | config PHYSICAL_START | |
948 | hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL | |
949 | default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL | |
950 | default "0x00000000" | |
951 | ||
952 | config PHYSICAL_ALIGN | |
953 | hex | |
954 | default "0x04000000" if FSL_BOOKE | |
955 | help | |
956 | This value puts the alignment restrictions on physical address | |
957 | where kernel is loaded and run from. Kernel is compiled for an | |
958 | address which meets above alignment restriction. | |
959 | ||
960 | config TASK_SIZE_BOOL | |
961 | bool "Set custom user task size" | |
962 | depends on ADVANCED_OPTIONS | |
963 | help | |
964 | This option allows you to set the amount of virtual address space | |
965 | allocated to user tasks. This can be useful in optimizing the | |
966 | virtual memory layout of the system. | |
967 | ||
968 | Say N here unless you know what you are doing. | |
969 | ||
970 | config TASK_SIZE | |
971 | hex "Size of user task space" if TASK_SIZE_BOOL | |
972 | default "0x80000000" if PPC_PREP || PPC_8xx | |
973 | default "0xc0000000" | |
974 | ||
975 | config CONSISTENT_SIZE_BOOL | |
976 | bool "Set custom consistent memory pool size" | |
977 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
978 | help | |
979 | This option allows you to set the size of the | |
980 | consistent memory pool. This pool of virtual memory | |
981 | is used to make consistent memory allocations. | |
982 | ||
983 | config CONSISTENT_SIZE | |
984 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
985 | default "0x00200000" if NOT_COHERENT_CACHE | |
986 | ||
987 | config PIN_TLB | |
988 | bool "Pinned Kernel TLBs (860 ONLY)" | |
989 | depends on ADVANCED_OPTIONS && 8xx | |
990 | endmenu | |
991 | ||
992 | if PPC64 | |
993 | config RELOCATABLE | |
994 | bool "Build a relocatable kernel" | |
995 | select NONSTATIC_KERNEL | |
996 | help | |
997 | This builds a kernel image that is capable of running anywhere | |
998 | in the RMA (real memory area) at any 16k-aligned base address. | |
999 | The kernel is linked as a position-independent executable (PIE) | |
1000 | and contains dynamic relocations which are processed early | |
1001 | in the bootup process. | |
1002 | ||
1003 | One use is for the kexec on panic case where the recovery kernel | |
1004 | must live at a different physical address than the primary | |
1005 | kernel. | |
1006 | ||
1007 | config PAGE_OFFSET | |
1008 | hex | |
1009 | default "0xc000000000000000" | |
1010 | config KERNEL_START | |
1011 | hex | |
1012 | default "0xc000000000000000" | |
1013 | config PHYSICAL_START | |
1014 | hex | |
1015 | default "0x00000000" | |
1016 | endif | |
1017 | ||
1018 | source "net/Kconfig" | |
1019 | ||
1020 | source "drivers/Kconfig" | |
1021 | ||
1022 | source "fs/Kconfig" | |
1023 | ||
1024 | source "arch/powerpc/sysdev/qe_lib/Kconfig" | |
1025 | ||
1026 | source "lib/Kconfig" | |
1027 | ||
1028 | source "arch/powerpc/Kconfig.debug" | |
1029 | ||
1030 | source "security/Kconfig" | |
1031 | ||
1032 | config KEYS_COMPAT | |
1033 | bool | |
1034 | depends on COMPAT && KEYS | |
1035 | default y | |
1036 | ||
1037 | source "crypto/Kconfig" | |
1038 | ||
1039 | config PPC_CLOCK | |
1040 | bool | |
1041 | default n | |
1042 | select HAVE_CLK | |
1043 | ||
1044 | config PPC_LIB_RHEAP | |
1045 | bool | |
1046 | ||
1047 | source "arch/powerpc/kvm/Kconfig" |