1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 source "arch/powerpc/platforms/Kconfig.cputype !! 2 config M68K
3 <<
4 config CC_HAS_ELFV2 <<
5 def_bool PPC64 && $(cc-option, -mabi=e <<
6 <<
7 config CC_HAS_PREFIXED <<
8 def_bool PPC64 && $(cc-option, -mcpu=p <<
9 <<
10 config CC_HAS_PCREL <<
11 # Clang has a bug (https://github.com/ <<
12 # where pcrel code is not generated if <<
13 # -mno-vsx options are also given. Wit <<
14 # instructions are generated from regu <<
15 # do pcrel yet. <<
16 def_bool PPC64 && CC_IS_GCC && $(cc-op <<
17 <<
18 config 32BIT <<
19 bool <<
20 default y if PPC32 <<
21 <<
22 config 64BIT <<
23 bool <<
24 default y if PPC64 <<
25 <<
26 config LIVEPATCH_64 <<
27 def_bool PPC64 <<
28 depends on LIVEPATCH <<
29 <<
30 config MMU <<
31 bool <<
32 default y <<
33 <<
34 config ARCH_MMAP_RND_BITS_MAX <<
35 # On Book3S 64, the default virtual ad <<
36 # is 2^47 (128TB). As a maximum, allow <<
37 # 32T of address space (2^45), which s <<
38 # between bottom-up and top-down alloc <<
39 # consume "normal" amounts of address <<
40 # and 4K page sizes. <<
41 default 29 if PPC_BOOK3S_64 && PPC_64K <<
42 default 33 if PPC_BOOK3S_64 <<
43 # <<
44 # On all other 64-bit platforms (curre <<
45 # address space is 2^46 (64TB). Allow <<
46 # of address space (2^44). Only 4K pag <<
47 default 32 if 64BIT # 32 = 44 (16T <<
48 # <<
49 # For 32-bit, use the compat values, a <<
50 default ARCH_MMAP_RND_COMPAT_BITS_MAX <<
51 <<
52 config ARCH_MMAP_RND_BITS_MIN <<
53 # Allow randomisation to consume up to <<
54 default 14 if 64BIT && PPC_64K_PAGES <<
55 default 18 if 64BIT <<
56 # <<
57 # For 32-bit, use the compat values, a <<
58 default ARCH_MMAP_RND_COMPAT_BITS_MIN <<
59 <<
60 config ARCH_MMAP_RND_COMPAT_BITS_MAX <<
61 # Total virtual address space for 32-b <<
62 # Allow randomisation to consume up to <<
63 default 11 if PPC_256K_PAGES # 11 = <<
64 default 13 if PPC_64K_PAGES # 13 = <<
65 default 15 if PPC_16K_PAGES # 15 = <<
66 default 17 # 17 = <<
67 <<
68 config ARCH_MMAP_RND_COMPAT_BITS_MIN <<
69 # Total virtual address space for 32-b <<
70 # Allow randomisation to consume up to <<
71 default 5 if PPC_256K_PAGES # 5 = <<
72 default 7 if PPC_64K_PAGES # 7 = <<
73 default 9 if PPC_16K_PAGES # 9 = <<
74 default 11 # 11 = <<
75 <<
76 config NR_IRQS <<
77 int "Number of virtual interrupt numbe <<
78 range 32 1048576 <<
79 default "512" <<
80 help <<
81 This defines the number of virtual i <<
82 can manage. Virtual interrupt number <<
83 /proc/interrupts. If you configure y <<
84 drivers will fail to load or worse - <<
85 <<
86 config NMI_IPI <<
87 bool 3 bool
88 depends on SMP && (DEBUGGER || KEXEC_C <<
89 default y 4 default y
90 !! 5 select ARCH_32BIT_OFF_T
91 config PPC_WATCHDOG !! 6 select ARCH_HAS_BINFMT_FLAT
92 bool !! 7 select ARCH_HAS_CPU_FINALIZE_INIT if MMU
93 depends on HARDLOCKUP_DETECTOR_ARCH <<
94 default y <<
95 help <<
96 This is a placeholder when the power <<
97 watchdog is selected (arch/powerpc/k <<
98 selected via the generic lockup dete <<
99 have no standalone config option for <<
100 <<
101 config STACKTRACE_SUPPORT <<
102 bool <<
103 default y <<
104 <<
105 config LOCKDEP_SUPPORT <<
106 bool <<
107 default y <<
108 <<
109 config GENERIC_LOCKBREAK <<
110 bool <<
111 default y <<
112 depends on SMP && PREEMPTION && !PPC_Q <<
113 <<
114 config GENERIC_HWEIGHT <<
115 bool <<
116 default y <<
117 <<
118 config PPC <<
119 bool <<
120 default y <<
121 # <<
122 # Please keep this list sorted alphabe <<
123 # <<
124 select ARCH_32BIT_OFF_T if PPC32 <<
125 select ARCH_DISABLE_KASAN_INLINE <<
126 select ARCH_DMA_DEFAULT_COHERENT <<
127 select ARCH_ENABLE_MEMORY_HOTPLUG <<
128 select ARCH_ENABLE_MEMORY_HOTREMOVE <<
129 select ARCH_HAS_COPY_MC <<
130 select ARCH_HAS_CURRENT_STACK_POINTER 8 select ARCH_HAS_CURRENT_STACK_POINTER
131 select ARCH_HAS_DEBUG_VIRTUAL !! 9 select ARCH_HAS_DMA_PREP_COHERENT if HAS_DMA && MMU && !COLDFIRE
132 select ARCH_HAS_DEBUG_VM_PGTABLE !! 10 select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA
133 select ARCH_HAS_DEBUG_WX !! 11 select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
134 select ARCH_HAS_DEVMEM_IS_ALLOWED !! 12 select ARCH_MIGHT_HAVE_PC_PARPORT if ISA
135 select ARCH_HAS_DMA_MAP_DIRECT !! 13 select ARCH_NO_PREEMPT if !COLDFIRE
136 select ARCH_HAS_DMA_OPS !! 14 select ARCH_USE_MEMTEST if MMU_MOTOROLA
137 select ARCH_HAS_FORTIFY_SOURCE <<
138 select ARCH_HAS_GCOV_PROFILE_ALL <<
139 select ARCH_HAS_KCOV <<
140 select ARCH_HAS_KERNEL_FPU_SUPPORT <<
141 select ARCH_HAS_MEMBARRIER_CALLBACKS <<
142 select ARCH_HAS_MEMBARRIER_SYNC_CORE <<
143 select ARCH_HAS_MEMREMAP_COMPAT_ALIGN <<
144 select ARCH_HAS_MMIOWB <<
145 select ARCH_HAS_NON_OVERLAPPING_ADDRES <<
146 select ARCH_HAS_PHYS_TO_DMA <<
147 select ARCH_HAS_PMEM_API <<
148 select ARCH_HAS_PTE_DEVMAP <<
149 select ARCH_HAS_PTE_SPECIAL <<
150 select ARCH_HAS_SCALED_CPUTIME <<
151 select ARCH_HAS_SET_MEMORY <<
152 select ARCH_HAS_STRICT_KERNEL_RWX <<
153 select ARCH_HAS_STRICT_KERNEL_RWX <<
154 select ARCH_HAS_STRICT_MODULE_RWX <<
155 select ARCH_HAS_SYSCALL_WRAPPER <<
156 select ARCH_HAS_TICK_BROADCAST <<
157 select ARCH_HAS_UACCESS_FLUSHCACHE <<
158 select ARCH_HAS_UBSAN <<
159 select ARCH_HAVE_NMI_SAFE_CMPXCHG <<
160 select ARCH_HAVE_EXTRA_ELF_NOTES <<
161 select ARCH_KEEP_MEMBLOCK <<
162 select ARCH_MHP_MEMMAP_ON_MEMORY_ENABL <<
163 select ARCH_MIGHT_HAVE_PC_PARPORT <<
164 select ARCH_MIGHT_HAVE_PC_SERIO <<
165 select ARCH_OPTIONAL_KERNEL_RWX <<
166 select ARCH_OPTIONAL_KERNEL_RWX_DEFAUL <<
167 select ARCH_SPLIT_ARG64 <<
168 select ARCH_STACKWALK <<
169 select ARCH_SUPPORTS_ATOMIC_RMW <<
170 select ARCH_SUPPORTS_DEBUG_PAGEALLOC <<
171 select ARCH_USE_BUILTIN_BSWAP <<
172 select ARCH_USE_CMPXCHG_LOCKREF <<
173 select ARCH_USE_MEMTEST <<
174 select ARCH_USE_QUEUED_RWLOCKS <<
175 select ARCH_WANT_DEFAULT_BPF_JIT <<
176 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_ <<
177 select ARCH_WANT_IPC_PARSE_VERSION 15 select ARCH_WANT_IPC_PARSE_VERSION
178 select ARCH_WANT_IRQS_OFF_ACTIVATE_MM !! 16 select BINFMT_FLAT_ARGVP_ENVP_ON_STACK
179 select ARCH_WANT_LD_ORPHAN_WARN !! 17 select DMA_DIRECT_REMAP if HAS_DMA && MMU && !COLDFIRE
180 select ARCH_WANT_OPTIMIZE_DAX_VMEMMAP !! 18 select GENERIC_ATOMIC64
181 select ARCH_WANTS_MODULES_DATA_IN_VMAL !! 19 select GENERIC_CPU_DEVICES
182 select ARCH_WEAK_RELEASE_ACQUIRE !! 20 select GENERIC_IOMAP
183 select BINFMT_ELF <<
184 select BUILDTIME_TABLE_SORT <<
185 select CLONE_BACKWARDS <<
186 select CPUMASK_OFFSTACK <<
187 select DCACHE_WORD_ACCESS <<
188 select DMA_OPS_BYPASS <<
189 select DYNAMIC_FTRACE <<
190 select EDAC_ATOMIC_SCRUB <<
191 select EDAC_SUPPORT <<
192 select FTRACE_MCOUNT_USE_PATCHABLE_FUN <<
193 select FUNCTION_ALIGNMENT_4B <<
194 select GENERIC_ATOMIC64 <<
195 select GENERIC_CLOCKEVENTS_BROADCAST <<
196 select GENERIC_CMOS_UPDATE <<
197 select GENERIC_CPU_AUTOPROBE <<
198 select GENERIC_CPU_VULNERABILITIES <<
199 select GENERIC_EARLY_IOREMAP <<
200 select GENERIC_GETTIMEOFDAY <<
201 select GENERIC_IDLE_POLL_SETUP <<
202 select GENERIC_IOREMAP <<
203 select GENERIC_IRQ_SHOW 21 select GENERIC_IRQ_SHOW
204 select GENERIC_IRQ_SHOW_LEVEL <<
205 select GENERIC_PCI_IOMAP <<
206 select GENERIC_PTDUMP <<
207 select GENERIC_SMP_IDLE_THREAD <<
208 select GENERIC_TIME_VSYSCALL <<
209 select GENERIC_VDSO_TIME_NS <<
210 select HAS_IOPORT <<
211 select HAVE_ARCH_AUDITSYSCALL <<
212 select HAVE_ARCH_HUGE_VMALLOC <<
213 select HAVE_ARCH_HUGE_VMAP <<
214 select HAVE_ARCH_JUMP_LABEL <<
215 select HAVE_ARCH_JUMP_LABEL_RELATIVE <<
216 select HAVE_ARCH_KASAN <<
217 select HAVE_ARCH_KASAN <<
218 select HAVE_ARCH_KASAN <<
219 select HAVE_ARCH_KASAN_VMALLOC <<
220 select HAVE_ARCH_KCSAN <<
221 select HAVE_ARCH_KFENCE <<
222 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS <<
223 select HAVE_ARCH_WITHIN_STACK_FRAMES <<
224 select HAVE_ARCH_KGDB <<
225 select HAVE_ARCH_MMAP_RND_BITS <<
226 select HAVE_ARCH_MMAP_RND_COMPAT_BITS <<
227 select HAVE_ARCH_NVRAM_OPS <<
228 select HAVE_ARCH_SECCOMP_FILTER <<
229 select HAVE_ARCH_TRACEHOOK <<
230 select HAVE_ASM_MODVERSIONS 22 select HAVE_ASM_MODVERSIONS
231 select HAVE_CONTEXT_TRACKING_USER !! 23 select HAVE_DEBUG_BUGVERBOSE
232 select HAVE_C_RECORDMCOUNT !! 24 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_HAS_NO_UNALIGNED
233 select HAVE_DEBUG_KMEMLEAK <<
234 select HAVE_DEBUG_STACKOVERFLOW <<
235 select HAVE_DYNAMIC_FTRACE <<
236 select HAVE_DYNAMIC_FTRACE_WITH_ARGS <<
237 select HAVE_DYNAMIC_FTRACE_WITH_REGS <<
238 select HAVE_EBPF_JIT <<
239 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
240 select HAVE_GUP_FAST <<
241 select HAVE_FTRACE_MCOUNT_RECORD <<
242 select HAVE_FUNCTION_ARG_ACCESS_API <<
243 select HAVE_FUNCTION_DESCRIPTORS <<
244 select HAVE_FUNCTION_ERROR_INJECTION <<
245 select HAVE_FUNCTION_GRAPH_TRACER <<
246 select HAVE_FUNCTION_TRACER <<
247 select HAVE_GCC_PLUGINS <<
248 select HAVE_GENERIC_VDSO <<
249 select HAVE_HARDLOCKUP_DETECTOR_ARCH <<
250 select HAVE_HARDLOCKUP_DETECTOR_PERF <<
251 select HAVE_HW_BREAKPOINT <<
252 select HAVE_IOREMAP_PROT <<
253 select HAVE_IRQ_TIME_ACCOUNTING <<
254 select HAVE_KERNEL_GZIP <<
255 select HAVE_KERNEL_LZMA <<
256 select HAVE_KERNEL_LZO <<
257 select HAVE_KERNEL_XZ <<
258 select HAVE_KPROBES <<
259 select HAVE_KPROBES_ON_FTRACE <<
260 select HAVE_KRETPROBES <<
261 select HAVE_LD_DEAD_CODE_DATA_ELIMINAT <<
262 select HAVE_LIVEPATCH <<
263 select HAVE_MOD_ARCH_SPECIFIC 25 select HAVE_MOD_ARCH_SPECIFIC
264 select HAVE_NMI !! 26 select HAVE_UID16
265 select HAVE_OPTPROBES !! 27 select MMU_GATHER_NO_RANGE if MMU
266 select HAVE_OBJTOOL !! 28 select MODULES_USE_ELF_REL
267 select HAVE_OBJTOOL_MCOUNT <<
268 select HAVE_PERF_EVENTS <<
269 select HAVE_PERF_EVENTS_NMI <<
270 select HAVE_PERF_REGS <<
271 select HAVE_PERF_USER_STACK_DUMP <<
272 select HAVE_RETHOOK <<
273 select HAVE_REGS_AND_STACK_ACCESS_API <<
274 select HAVE_RELIABLE_STACKTRACE <<
275 select HAVE_RSEQ <<
276 select HAVE_SETUP_PER_CPU_AREA <<
277 select HAVE_SOFTIRQ_ON_OWN_STACK <<
278 select HAVE_STACKPROTECTOR <<
279 select HAVE_STACKPROTECTOR <<
280 select HAVE_STATIC_CALL <<
281 select HAVE_SYSCALL_TRACEPOINTS <<
282 select HAVE_VIRT_CPU_ACCOUNTING <<
283 select HAVE_VIRT_CPU_ACCOUNTING_GEN <<
284 select HOTPLUG_SMT <<
285 select SMT_NUM_THREADS_DYNAMIC <<
286 select HUGETLB_PAGE_SIZE_VARIABLE <<
287 select IOMMU_HELPER <<
288 select IRQ_DOMAIN <<
289 select IRQ_FORCED_THREADING <<
290 select KASAN_VMALLOC <<
291 select LOCK_MM_AND_FIND_VMA <<
292 select MMU_GATHER_PAGE_SIZE <<
293 select MMU_GATHER_RCU_TABLE_FREE <<
294 select MMU_GATHER_MERGE_VMAS <<
295 select MMU_LAZY_TLB_SHOOTDOWN <<
296 select MODULES_USE_ELF_RELA 29 select MODULES_USE_ELF_RELA
297 select NEED_DMA_MAP_STATE !! 30 select NO_DMA if !MMU && !COLDFIRE
298 select NEED_PER_CPU_EMBED_FIRST_CHUNK !! 31 select OLD_SIGACTION
299 select NEED_PER_CPU_PAGE_FIRST_CHUNK !! 32 select OLD_SIGSUSPEND3
300 select NEED_SG_DMA_LENGTH !! 33 select UACCESS_MEMCPY if !MMU
301 select OF !! 34 select ZONE_DMA
302 select OF_EARLY_FLATTREE <<
303 select OLD_SIGACTION <<
304 select OLD_SIGSUSPEND <<
305 select PCI_DOMAINS <<
306 select PCI_MSI_ARCH_FALLBACKS <<
307 select PCI_SYSCALL <<
308 select PPC_DAWR <<
309 select RTC_LIB <<
310 select SPARSE_IRQ <<
311 select STRICT_KERNEL_RWX if STRICT_MOD <<
312 select SYSCTL_EXCEPTION_TRACE <<
313 select THREAD_INFO_IN_TASK <<
314 select TRACE_IRQFLAGS_SUPPORT <<
315 select VDSO_GETRANDOM <<
316 # <<
317 # Please keep this list sorted alphabe <<
318 # <<
319 <<
320 config PPC_BARRIER_NOSPEC <<
321 bool <<
322 default y <<
323 depends on PPC_BOOK3S_64 || PPC_E500 <<
324 <<
325 config PPC_HAS_LBARX_LHARX <<
326 bool <<
327 <<
328 config EARLY_PRINTK <<
329 bool <<
330 default y <<
331 <<
332 config PANIC_TIMEOUT <<
333 int <<
334 default 180 <<
335 <<
336 config COMPAT <<
337 bool "Enable support for 32bit binarie <<
338 depends on PPC64 <<
339 default y if !CPU_LITTLE_ENDIAN <<
340 select ARCH_WANT_OLD_COMPAT_IPC <<
341 select COMPAT_OLD_SIGACTION <<
342 <<
343 config SCHED_OMIT_FRAME_POINTER <<
344 bool <<
345 default y <<
346 <<
347 config ARCH_MAY_HAVE_PC_FDC <<
348 bool <<
349 default PCI <<
350 <<
351 config PPC_UDBG_16550 <<
352 bool <<
353 <<
354 config GENERIC_TBSYNC <<
355 bool <<
356 default y if PPC32 && SMP <<
357 <<
358 config AUDIT_ARCH <<
359 bool <<
360 default y <<
361 <<
362 config GENERIC_BUG <<
363 bool <<
364 default y <<
365 depends on BUG <<
366 35
367 config GENERIC_BUG_RELATIVE_POINTERS !! 36 config CPU_BIG_ENDIAN
368 def_bool y 37 def_bool y
369 depends on GENERIC_BUG <<
370 <<
371 config SYS_SUPPORTS_APM_EMULATION <<
372 default y if PMAC_APM_EMU <<
373 bool <<
374 38
375 config EPAPR_BOOT !! 39 config ARCH_HAS_ILOG2_U32
376 bool 40 bool
377 help <<
378 Used to allow a board to specify it <<
379 41
380 config DEFAULT_UIMAGE !! 42 config ARCH_HAS_ILOG2_U64
381 bool 43 bool
382 help <<
383 Used to allow a board to specify it <<
384 44
385 config ARCH_HIBERNATION_POSSIBLE !! 45 config GENERIC_HWEIGHT
386 bool 46 bool
387 default y 47 default y
388 48
389 config ARCH_SUSPEND_POSSIBLE !! 49 config GENERIC_CALIBRATE_DELAY
390 def_bool y <<
391 depends on ADB_PMU || PPC_EFIKA || PPC <<
392 (PPC_85xx && !PPC_E500MC) | <<
393 || 44x <<
394 <<
395 config ARCH_SUSPEND_NONZERO_CPU <<
396 def_bool y <<
397 depends on PPC_POWERNV || PPC_PSERIES <<
398 <<
399 config ARCH_HAS_ADD_PAGES <<
400 def_bool y <<
401 depends on ARCH_ENABLE_MEMORY_HOTPLUG <<
402 <<
403 config PPC_DCR_NATIVE <<
404 bool <<
405 <<
406 config PPC_DCR_MMIO <<
407 bool 50 bool
408 <<
409 config PPC_DCR <<
410 bool <<
411 depends on PPC_DCR_NATIVE || PPC_DCR_M <<
412 default y <<
413 <<
414 config PPC_PCI_OF_BUS_MAP <<
415 bool "Use pci_to_OF_bus_map (deprecate <<
416 depends on PPC32 <<
417 depends on PPC_PMAC || PPC_CHRP <<
418 help <<
419 This option uses pci_to_OF_bus_map t <<
420 restricts the system to only having <<
421 the "pci-OF-bus-map" property to be <<
422 <<
423 If unsure, say "N". <<
424 <<
425 config PPC_PCI_BUS_NUM_DOMAIN_DEPENDENT <<
426 depends on PPC32 <<
427 depends on !PPC_PCI_OF_BUS_MAP <<
428 bool "Assign PCI bus numbers from zero <<
429 default y 51 default y
430 help <<
431 By default on PPC32 were PCI bus num <<
432 So system could have only 256 PCI bu <<
433 PCI domains. When this option is ena <<
434 PCI domain dependent and each PCI co <<
435 256 PCI buses, like it is on other L <<
436 52
437 config PPC_OF_PLATFORM_PCI !! 53 config GENERIC_CSUM
438 bool 54 bool
439 depends on PCI <<
440 depends on PPC64 # not supported on 32 <<
441 <<
442 config ARCH_SUPPORTS_UPROBES <<
443 def_bool y <<
444 55
445 config PPC_ADV_DEBUG_REGS !! 56 config TIME_LOW_RES
446 bool 57 bool
447 depends on BOOKE <<
448 default y 58 default y
449 59
450 config PPC_ADV_DEBUG_IACS !! 60 config NO_IOPORT_MAP
451 int <<
452 depends on PPC_ADV_DEBUG_REGS <<
453 default 4 if 44x <<
454 default 2 <<
455 <<
456 config PPC_ADV_DEBUG_DACS <<
457 int <<
458 depends on PPC_ADV_DEBUG_REGS <<
459 default 2 <<
460 <<
461 config PPC_ADV_DEBUG_DVCS <<
462 int <<
463 depends on PPC_ADV_DEBUG_REGS <<
464 default 2 if 44x <<
465 default 0 <<
466 <<
467 config PPC_ADV_DEBUG_DAC_RANGE <<
468 bool <<
469 depends on PPC_ADV_DEBUG_REGS && 44x <<
470 default y <<
471 <<
472 config PPC_DAWR <<
473 bool <<
474 <<
475 config PGTABLE_LEVELS <<
476 int <<
477 default 2 if !PPC64 <<
478 default 4 <<
479 <<
480 source "arch/powerpc/sysdev/Kconfig" <<
481 source "arch/powerpc/platforms/Kconfig" <<
482 <<
483 menu "Kernel options" <<
484 <<
485 config HIGHMEM <<
486 bool "High memory support" <<
487 depends on PPC32 <<
488 select KMAP_LOCAL <<
489 <<
490 source "kernel/Kconfig.hz" <<
491 <<
492 config MATH_EMULATION <<
493 bool "Math emulation" <<
494 depends on 44x || PPC_8xx || PPC_MPC83 <<
495 select PPC_FPU_REGS <<
496 help <<
497 Some PowerPC chips designed for embe <<
498 a floating-point unit and therefore <<
499 floating-point instructions in the P <<
500 say Y here, the kernel will include <<
501 unit, which will allow programs that <<
502 instructions to run. <<
503 <<
504 This is also useful to emulate missi <<
505 such as fsqrt on cores that do have <<
506 them (such as Freescale BookE). <<
507 <<
508 choice <<
509 prompt "Math emulation options" <<
510 default MATH_EMULATION_FULL <<
511 depends on MATH_EMULATION <<
512 <<
513 config MATH_EMULATION_FULL <<
514 bool "Emulate all the floating point i <<
515 help <<
516 Select this option will enable the k <<
517 all the floating point instructions. <<
518 a FPU, you should select this. <<
519 <<
520 config MATH_EMULATION_HW_UNIMPLEMENTED <<
521 bool "Just emulate the FPU unimplement <<
522 help <<
523 Select this if you know there does h <<
524 SoC, but some floating point instruc <<
525 <<
526 endchoice <<
527 <<
528 config PPC_TRANSACTIONAL_MEM <<
529 bool "Transactional Memory support for <<
530 depends on PPC_BOOK3S_64 <<
531 depends on SMP <<
532 select ALTIVEC <<
533 select VSX <<
534 help <<
535 Support user-mode Transactional Memo <<
536 <<
537 config PPC_UV <<
538 bool "Ultravisor support" <<
539 depends on KVM_BOOK3S_HV_POSSIBLE <<
540 depends on DEVICE_PRIVATE <<
541 default n <<
542 help <<
543 This option paravirtualizes the kern <<
544 supports the Protected Execution Fac <<
545 the ultravisor firmware runs at a pr <<
546 hypervisor. <<
547 <<
548 If unsure, say "N". <<
549 <<
550 config LD_HEAD_STUB_CATCH <<
551 bool "Reserve 256 bytes to cope with l <<
552 depends on PPC64 <<
553 help <<
554 Very large kernels can cause linker <<
555 code in head_64.S, which moves the h <<
556 specified location. This option can <<
557 <<
558 If unsure, say "N". <<
559 <<
560 config MPROFILE_KERNEL <<
561 depends on PPC64_ELF_ABI_V2 && FUNCTIO <<
562 def_bool $(success,$(srctree)/arch/pow <<
563 def_bool $(success,$(srctree)/arch/pow <<
564 <<
565 config ARCH_USING_PATCHABLE_FUNCTION_ENTRY <<
566 depends on FUNCTION_TRACER && (PPC32 | <<
567 depends on $(cc-option,-fpatchable-fun <<
568 def_bool y if PPC32 <<
569 def_bool $(success,$(srctree)/arch/pow <<
570 def_bool $(success,$(srctree)/arch/pow <<
571 <<
572 config HOTPLUG_CPU <<
573 bool "Support for enabling/disabling C <<
574 depends on SMP && (PPC_PSERIES || \ <<
575 PPC_PMAC || PPC_POWERNV || FSL <<
576 help <<
577 Say Y here to be able to disable and <<
578 CPUs at runtime on SMP machines. <<
579 <<
580 Say N if you are unsure. <<
581 <<
582 config INTERRUPT_SANITIZE_REGISTERS <<
583 bool "Clear gprs on interrupt arrival" <<
584 depends on PPC64 && ARCH_HAS_SYSCALL_W <<
585 default PPC_BOOK3E_64 || PPC_PSERIES | <<
586 help <<
587 Reduce the influence of user registe <<
588 syscalls through clearing user state <<
589 the exception. <<
590 <<
591 config PPC_QUEUED_SPINLOCKS <<
592 bool "Queued spinlocks" if EXPERT <<
593 depends on SMP <<
594 default PPC_BOOK3S_64 <<
595 help <<
596 Say Y here to use queued spinlocks w <<
597 fairness on large SMP and NUMA syste <<
598 performance. <<
599 <<
600 config ARCH_CPU_PROBE_RELEASE <<
601 def_bool y 61 def_bool y
602 depends on HOTPLUG_CPU <<
603 <<
604 config PPC64_SUPPORTS_MEMORY_FAILURE <<
605 bool "Add support for memory hwpoison" <<
606 depends on PPC_BOOK3S_64 <<
607 default "y" if PPC_POWERNV <<
608 select ARCH_SUPPORTS_MEMORY_FAILURE <<
609 62
610 config ARCH_SUPPORTS_KEXEC !! 63 config HZ
611 def_bool PPC_BOOK3S || PPC_E500 || (44 <<
612 <<
613 config ARCH_SUPPORTS_KEXEC_FILE <<
614 def_bool PPC64 <<
615 <<
616 config ARCH_SUPPORTS_KEXEC_PURGATORY <<
617 def_bool y <<
618 <<
619 config ARCH_SELECTS_KEXEC_FILE <<
620 def_bool y <<
621 depends on KEXEC_FILE <<
622 select KEXEC_ELF <<
623 select HAVE_IMA_KEXEC if IMA <<
624 <<
625 config PPC64_BIG_ENDIAN_ELF_ABI_V2 <<
626 # Option is available to BFD, but LLD <<
627 # always true there. <<
628 prompt "Build big-endian kernel using <<
629 def_bool y <<
630 depends on PPC64 && CPU_BIG_ENDIAN <<
631 depends on CC_HAS_ELFV2 <<
632 help <<
633 This builds the kernel image using t <<
634 V2 ABI Specification", which has a r <<
635 function calls. This internal kernel <<
636 userspace compatibility. <<
637 <<
638 The V2 ABI is standard for 64-bit li <<
639 it is less well tested by kernel and <<
640 build userspace this way, and it can <<
641 <<
642 config RELOCATABLE <<
643 bool "Build a relocatable kernel" <<
644 depends on PPC64 || (FLATMEM && (44x | <<
645 select NONSTATIC_KERNEL <<
646 help <<
647 This builds a kernel image that is c <<
648 location the kernel is loaded at. Fo <<
649 alignment restrictions, and this fea <<
650 DYNAMIC_MEMSTART and hence overrides <<
651 16k-aligned base address. The kernel <<
652 position-independent executable (PIE <<
653 which are processed early in the boo <<
654 <<
655 One use is for the kexec on panic ca <<
656 must live at a different physical ad <<
657 kernel. <<
658 <<
659 Note: If CONFIG_RELOCATABLE=y, then <<
660 it has been loaded at and the compil <<
661 CONFIG_PHYSICAL_START is ignored. H <<
662 setting can still be useful to bootw <<
663 load address of the kernel (eg. u-bo <<
664 <<
665 config RANDOMIZE_BASE <<
666 bool "Randomize the address of the ker <<
667 depends on PPC_85xx && FLATMEM <<
668 depends on RELOCATABLE <<
669 help <<
670 Randomizes the virtual address at wh <<
671 loaded, as a security feature that d <<
672 relying on knowledge of the location <<
673 <<
674 If unsure, say Y. <<
675 <<
676 config RELOCATABLE_TEST <<
677 bool "Test relocatable kernel" <<
678 depends on (PPC64 && RELOCATABLE) <<
679 help <<
680 This runs the relocatable kernel at <<
681 loaded at, which tends to be non-zer <<
682 relocation code. <<
683 <<
684 config ARCH_SUPPORTS_CRASH_DUMP <<
685 def_bool PPC64 || PPC_BOOK3S_32 || PPC <<
686 <<
687 config ARCH_SELECTS_CRASH_DUMP <<
688 def_bool y <<
689 depends on CRASH_DUMP <<
690 select RELOCATABLE if PPC64 || 44x || <<
691 <<
692 config ARCH_SUPPORTS_CRASH_HOTPLUG <<
693 def_bool y <<
694 depends on PPC64 <<
695 <<
696 config FA_DUMP <<
697 bool "Firmware-assisted dump" <<
698 depends on CRASH_DUMP && PPC64 && (PPC <<
699 help <<
700 A robust mechanism to get reliable k <<
701 assistance from firmware. This appro <<
702 instead firmware assists in booting <<
703 while preserving memory contents. Fi <<
704 is meant to be a kdump replacement o <<
705 speed not possible without system fi <<
706 <<
707 If unsure, say "y". Only special ker <<
708 need to say "N" here. <<
709 <<
710 config PRESERVE_FA_DUMP <<
711 bool "Preserve Firmware-assisted dump" <<
712 depends on PPC64 && PPC_POWERNV && !FA <<
713 help <<
714 On a kernel with FA_DUMP disabled, t <<
715 crash data from a previously crash'e <<
716 memory preserving kernel boot would <<
717 Petitboot kernel is the typical usec <<
718 <<
719 config OPAL_CORE <<
720 bool "Export OPAL memory as /sys/firmw <<
721 depends on PPC64 && PPC_POWERNV <<
722 help <<
723 This option uses the MPIPL support i <<
724 ELF core of OPAL memory after a cras <<
725 as /sys/firmware/opal/core file whic <<
726 OPAL crashes using GDB. <<
727 <<
728 config IRQ_ALL_CPUS <<
729 bool "Distribute interrupts on all CPU <<
730 depends on SMP <<
731 help <<
732 This option gives the kernel permiss <<
733 multiple CPUs. Saying N here will r <<
734 CPU. Generally saying Y is safe, al <<
735 reported with SMP Power Macintoshes <<
736 <<
737 config NUMA <<
738 bool "NUMA Memory Allocation and Sched <<
739 depends on PPC64 && SMP <<
740 default y if PPC_PSERIES || PPC_POWERN <<
741 select USE_PERCPU_NUMA_NODE_ID <<
742 help <<
743 Enable NUMA (Non-Uniform Memory Acce <<
744 <<
745 The kernel will try to allocate memo <<
746 local memory controller of the CPU a <<
747 NUMA awareness to the kernel. <<
748 <<
749 config NODES_SHIFT <<
750 int 64 int
751 default "8" if PPC64 !! 65 default 1000 if CLEOPATRA
752 default "4" !! 66 default 100
753 depends on NUMA <<
754 <<
755 config HAVE_MEMORYLESS_NODES <<
756 def_bool y <<
757 depends on NUMA <<
758 <<
759 config ARCH_SELECT_MEMORY_MODEL <<
760 def_bool y <<
761 depends on PPC64 <<
762 <<
763 config ARCH_FLATMEM_ENABLE <<
764 def_bool y <<
765 depends on (PPC64 && !NUMA) || PPC32 <<
766 <<
767 config ARCH_SPARSEMEM_ENABLE <<
768 def_bool y <<
769 depends on PPC64 <<
770 select SPARSEMEM_VMEMMAP_ENABLE <<
771 <<
772 config ARCH_SPARSEMEM_DEFAULT <<
773 def_bool y <<
774 depends on PPC_BOOK3S_64 <<
775 <<
776 config ILLEGAL_POINTER_VALUE <<
777 hex <<
778 # This is roughly half way between the <<
779 # of kernel space, which seems about a <<
780 default 0x5deadbeef0000000 if PPC64 <<
781 default 0 <<
782 <<
783 config ARCH_MEMORY_PROBE <<
784 def_bool y <<
785 depends on MEMORY_HOTPLUG <<
786 <<
787 choice <<
788 prompt "Page size" <<
789 default PPC_64K_PAGES if PPC_BOOK3S_64 <<
790 default PPC_4K_PAGES <<
791 help <<
792 Select the kernel logical page size. <<
793 will reduce software overhead at eac <<
794 hardware prefetch mechanisms to be m <<
795 larger dma transfers increasing IO e <<
796 overhead. However the utilization of <<
797 For example, each cached file will u <<
798 page size to hold its contents and t <<
799 end of file and the end of page is w <<
800 <<
801 Some dedicated systems, such as soft <<
802 accelerated calculations, have shown <<
803 <<
804 If you configure a 64 bit kernel for <<
805 processor does not support them, the <<
806 them with 4k pages, loading them on <<
807 reduced software overhead and larger <<
808 For the 32 bit kernel, a large page <<
809 unless it is supported by the config <<
810 <<
811 If unsure, choose 4K_PAGES. <<
812 <<
813 config PPC_4K_PAGES <<
814 bool "4k page size" <<
815 select HAVE_ARCH_SOFT_DIRTY if PPC_BOO <<
816 select HAVE_PAGE_SIZE_4KB <<
817 <<
818 config PPC_16K_PAGES <<
819 bool "16k page size" <<
820 depends on 44x || PPC_8xx <<
821 select HAVE_PAGE_SIZE_16KB <<
822 <<
823 config PPC_64K_PAGES <<
824 bool "64k page size" <<
825 depends on 44x || PPC_BOOK3S_64 <<
826 select HAVE_ARCH_SOFT_DIRTY if PPC_BOO <<
827 select HAVE_PAGE_SIZE_64KB <<
828 <<
829 config PPC_256K_PAGES <<
830 bool "256k page size (Requires non-sta <<
831 depends on 44x && !PPC_47x <<
832 select HAVE_PAGE_SIZE_256KB <<
833 help <<
834 Make the page size 256k. <<
835 <<
836 The kernel will only be able to run <<
837 compiled with '-zmax-page-size' set <<
838 binutils later than 2.17.50.0.3, or <<
839 definition from 0x10000 to 0x40000 i <<
840 <<
841 endchoice <<
842 <<
843 config THREAD_SHIFT <<
844 int "Thread shift" if EXPERT <<
845 range 13 15 <<
846 default "15" if PPC_256K_PAGES <<
847 default "15" if PPC_PSERIES || PPC_POW <<
848 default "14" if PPC64 <<
849 default "13" <<
850 help <<
851 Used to define the stack size. The d <<
852 want. Only change this if you know w <<
853 <<
854 config DATA_SHIFT_BOOL <<
855 bool "Set custom data alignment" <<
856 depends on ADVANCED_OPTIONS <<
857 depends on STRICT_KERNEL_RWX || DEBUG_ <<
858 depends on (PPC_8xx && !PIN_TLB_DATA & <<
859 PPC_BOOK3S_32 || PPC_85xx <<
860 help <<
861 This option allows you to set the ke <<
862 RAM is mapped by blocks, the alignme <<
863 number of possible blocks. The defau <<
864 <<
865 Say N here unless you know what you <<
866 <<
867 config DATA_SHIFT <<
868 int "Data shift" if DATA_SHIFT_BOOL <<
869 default 24 if STRICT_KERNEL_RWX && PPC <<
870 range 17 28 if (STRICT_KERNEL_RWX || D <<
871 range 19 23 if (STRICT_KERNEL_RWX || D <<
872 range 20 24 if (STRICT_KERNEL_RWX || D <<
873 default 22 if STRICT_KERNEL_RWX && PPC <<
874 default 18 if (DEBUG_PAGEALLOC || KFEN <<
875 default 23 if (STRICT_KERNEL_RWX || DE <<
876 (PIN_TLB_DATA || PIN_TLB <<
877 default 19 if (STRICT_KERNEL_RWX || DE <<
878 default 24 if STRICT_KERNEL_RWX && PPC <<
879 default PAGE_SHIFT <<
880 help <<
881 On Book3S 32 (603+), DBATs are used <<
882 Smaller is the alignment, greater is <<
883 <<
884 On 8xx, large pages (512kb or 8M) ar <<
885 memory. Aligning to 8M reduces TLB m <<
886 in that case. If PIN_TLB is selected <<
887 8M pages will be pinned. <<
888 <<
889 config ARCH_FORCE_MAX_ORDER <<
890 int "Order of maximal physically conti <<
891 range 7 8 if PPC64 && PPC_64K_PAGES <<
892 default "8" if PPC64 && PPC_64K_PAGES <<
893 range 12 12 if PPC64 && !PPC_64K_PAGES <<
894 default "12" if PPC64 && !PPC_64K_PAGE <<
895 range 8 10 if PPC32 && PPC_16K_PAGES <<
896 default "8" if PPC32 && PPC_16K_PAGES <<
897 range 6 10 if PPC32 && PPC_64K_PAGES <<
898 default "6" if PPC32 && PPC_64K_PAGES <<
899 range 4 10 if PPC32 && PPC_256K_PAGES <<
900 default "4" if PPC32 && PPC_256K_PAGES <<
901 range 10 12 <<
902 default "10" <<
903 help <<
904 The kernel page allocator limits the <<
905 contiguous allocations. The limit is <<
906 defines the maximal power of two of <<
907 allocated as a single contiguous blo <<
908 overriding the default setting when <<
909 large blocks of physically contiguou <<
910 <<
911 The page size is not necessarily 4KB <<
912 systems, 64KB pages can be enabled v <<
913 this in mind when choosing a value f <<
914 <<
915 Don't change if unsure. <<
916 <<
917 config PPC_SUBPAGE_PROT <<
918 bool "Support setting protections for <<
919 default n <<
920 depends on PPC_64S_HASH_MMU && PPC_64K <<
921 help <<
922 This option adds support for system <<
923 to set access permissions (read/writ <<
924 on the 4k subpages of each 64k page. <<
925 <<
926 If unsure, say N here. <<
927 <<
928 config PPC_PROT_SAO_LPAR <<
929 bool "Support PROT_SAO mappings in LPA <<
930 depends on PPC_BOOK3S_64 <<
931 help <<
932 This option adds support for PROT_SA <<
933 inside LPARs on supported CPUs. <<
934 <<
935 This may cause issues when performin <<
936 a CPU that supports SAO to one that <<
937 <<
938 If unsure, say N here. <<
939 <<
940 config PPC_COPRO_BASE <<
941 bool <<
942 <<
943 config SCHED_SMT <<
944 bool "SMT (Hyperthreading) scheduler s <<
945 depends on PPC64 && SMP <<
946 help <<
947 SMT scheduler support improves the C <<
948 when dealing with POWER5 cpus at a c <<
949 overhead in some places. If unsure s <<
950 <<
951 config PPC_DENORMALISATION <<
952 bool "PowerPC denormalisation exceptio <<
953 depends on PPC_BOOK3S_64 <<
954 default "y" if PPC_POWERNV <<
955 help <<
956 Add support for handling denormalisa <<
957 values. Useful for bare metal only. <<
958 <<
959 config CMDLINE <<
960 string "Initial kernel command string" <<
961 default "" <<
962 help <<
963 On some platforms, there is currentl <<
964 pass arguments to the kernel. For th <<
965 some command-line options at build t <<
966 most cases you will need to specify <<
967 <<
968 choice <<
969 prompt "Kernel command line type" <<
970 depends on CMDLINE != "" <<
971 default CMDLINE_FROM_BOOTLOADER <<
972 <<
973 config CMDLINE_FROM_BOOTLOADER <<
974 bool "Use bootloader kernel arguments <<
975 help <<
976 Uses the command-line options passed <<
977 the boot loader doesn't provide any, <<
978 string provided in CMDLINE will be u <<
979 67
980 config CMDLINE_EXTEND !! 68 config PGTABLE_LEVELS
981 bool "Extend bootloader kernel argumen !! 69 default 2 if SUN3 || COLDFIRE
982 help !! 70 default 3
983 The command-line arguments provided <<
984 appended to the default kernel comma <<
985 <<
986 config CMDLINE_FORCE <<
987 bool "Always use the default kernel co <<
988 help <<
989 Always use the default kernel comman <<
990 loader passes other arguments to the <<
991 This is useful if you cannot or don' <<
992 command-line options your boot loade <<
993 <<
994 endchoice <<
995 <<
996 config EXTRA_TARGETS <<
997 string "Additional default image types <<
998 help <<
999 List additional targets to be built <<
1000 by spaces). This is useful for tar <<
1001 files in the .dts directory. <<
1002 <<
1003 Targets in this list will be build <<
1004 target, or when the user does a 'ma <<
1005 'make zImage.initrd'. <<
1006 <<
1007 If unsure, leave blank <<
1008 <<
1009 config ARCH_WANTS_FREEZER_CONTROL <<
1010 def_bool y <<
1011 depends on ADB_PMU <<
1012 <<
1013 source "kernel/power/Kconfig" <<
1014 <<
1015 config PPC_MEM_KEYS <<
1016 prompt "PowerPC Memory Protection Key <<
1017 def_bool y <<
1018 depends on PPC_BOOK3S_64 <<
1019 depends on PPC_64S_HASH_MMU <<
1020 select ARCH_USES_HIGH_VMA_FLAGS <<
1021 select ARCH_HAS_PKEYS <<
1022 help <<
1023 Memory Protection Keys provides a m <<
1024 page-based protections, but without <<
1025 page tables when an application cha <<
1026 <<
1027 For details, see Documentation/core <<
1028 <<
1029 If unsure, say y. <<
1030 <<
1031 config ARCH_PKEY_BITS <<
1032 int <<
1033 default 5 <<
1034 <<
1035 config PPC_SECURE_BOOT <<
1036 prompt "Enable secure boot support" <<
1037 bool <<
1038 depends on PPC_POWERNV || PPC_PSERIES <<
1039 depends on IMA_ARCH_POLICY <<
1040 imply IMA_SECURE_AND_OR_TRUSTED_BOOT <<
1041 select PSERIES_PLPKS if PPC_PSERIES <<
1042 help <<
1043 Systems with firmware secure boot e <<
1044 policies to extend secure boot to t <<
1045 to enable OS secure boot on systems <<
1046 it. If in doubt say N. <<
1047 71
1048 config PPC_SECVAR_SYSFS !! 72 config MMU
1049 bool "Enable sysfs interface for POWE !! 73 bool "MMU-based Paged Memory Management Support"
1050 default y 74 default y
1051 depends on PPC_SECURE_BOOT <<
1052 depends on SYSFS <<
1053 help 75 help
1054 POWER secure variables are managed !! 76 Select if you want MMU-based virtualised addressing space
1055 These variables are exposed to user !! 77 support by paged memory management. If unsure, say 'Y'.
1056 read/write operations on these vari <<
1057 secure boot enabled and want to exp <<
1058 <<
1059 endmenu <<
1060 78
1061 config ISA_DMA_API !! 79 config MMU_MOTOROLA
1062 bool 80 bool
1063 default PCI <<
1064 <<
1065 menu "Bus options" <<
1066 81
1067 config ISA !! 82 config MMU_COLDFIRE
1068 bool "Support for ISA-bus hardware" <<
1069 depends on PPC_CHRP <<
1070 select PPC_I8259 <<
1071 help <<
1072 Find out whether you have ISA slots <<
1073 name of a bus system, i.e. the way <<
1074 inside your box. If you have an Ap <<
1075 have an IBM RS/6000 or pSeries mach <<
1076 embedded board, consult your board <<
1077 <<
1078 config GENERIC_ISA_DMA <<
1079 bool 83 bool
1080 depends on ISA_DMA_API <<
1081 default y <<
1082 84
1083 config PPC_INDIRECT_PCI !! 85 config MMU_SUN3
1084 bool 86 bool
1085 depends on PCI !! 87 depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE
1086 default y if 44x <<
1087 88
1088 config SBUS !! 89 config KEXEC
1089 bool !! 90 bool "kexec system call"
>> 91 depends on M68KCLASSIC && MMU
>> 92 select KEXEC_CORE
>> 93 help
>> 94 kexec is a system call that implements the ability to shutdown your
>> 95 current kernel, and to start another kernel. It is like a reboot
>> 96 but it is independent of the system firmware. And like a reboot
>> 97 you can start any kernel with it, not just Linux.
1090 98
1091 config FSL_SOC !! 99 The name comes from the similarity to the exec system call.
1092 bool <<
1093 100
1094 config FSL_PCI !! 101 It is an ongoing process to be certain the hardware in a machine
1095 bool !! 102 is properly shutdown, so do not be surprised if this code does not
1096 select ARCH_HAS_DMA_SET_MASK !! 103 initially work for you. As of this writing the exact hardware
1097 select PPC_INDIRECT_PCI !! 104 interface is strongly in flux, so no good recommendation can be
1098 select PCI_QUIRKS !! 105 made.
1099 106
1100 config FSL_PMC !! 107 config BOOTINFO_PROC
1101 bool !! 108 bool "Export bootinfo in procfs"
1102 default y !! 109 depends on KEXEC && M68KCLASSIC
1103 depends on SUSPEND && (PPC_85xx || PP <<
1104 help 110 help
1105 Freescale MPC85xx/MPC86xx power man !! 111 Say Y to export the bootinfo used to boot the kernel in a
1106 (suspend/resume). For MPC83xx see p !! 112 "bootinfo" file in procfs. This is useful with kexec.
1107 113
1108 config PPC4xx_CPM !! 114 menu "Platform setup"
1109 bool <<
1110 default y <<
1111 depends on SUSPEND && 44x <<
1112 help <<
1113 PPC4xx Clock Power Management (CPM) <<
1114 It also enables support for two dif <<
1115 and idle-doze). <<
1116 115
1117 config FSL_LBC !! 116 source "arch/m68k/Kconfig.cpu"
1118 bool "Freescale Local Bus support" <<
1119 help <<
1120 Enables reporting of errors from th <<
1121 controller. Also contains some com <<
1122 drivers for specific local bus peri <<
1123 117
1124 config FSL_GTM !! 118 source "arch/m68k/Kconfig.machine"
1125 bool <<
1126 depends on PPC_83xx || QUICC_ENGINE | <<
1127 help <<
1128 Freescale General-purpose Timers su <<
1129 119
1130 config FSL_RIO !! 120 source "arch/m68k/Kconfig.bus"
1131 bool "Freescale Embedded SRIO Control <<
1132 depends on RAPIDIO = y && HAVE_RAPIDI <<
1133 default "n" <<
1134 help <<
1135 Include support for RapidIO control <<
1136 processors (MPC8548, MPC8641, etc). <<
1137 121
1138 endmenu 122 endmenu
1139 123
1140 config NONSTATIC_KERNEL !! 124 menu "Kernel Features"
1141 bool <<
1142 <<
1143 menu "Advanced setup" <<
1144 depends on PPC32 <<
1145 125
1146 config ADVANCED_OPTIONS !! 126 endmenu
1147 bool "Prompt for advanced kernel conf <<
1148 help <<
1149 This option will enable prompting f <<
1150 configuration options. These optio <<
1151 work if they are set incorrectly, b <<
1152 aspects of kernel memory management <<
1153 <<
1154 Unless you know what you are doing, <<
1155 <<
1156 comment "Default settings for advanced config <<
1157 depends on !ADVANCED_OPTIONS <<
1158 <<
1159 config LOWMEM_SIZE_BOOL <<
1160 bool "Set maximum low memory" <<
1161 depends on ADVANCED_OPTIONS <<
1162 help <<
1163 This option allows you to set the m <<
1164 will be used as "low memory", that <<
1165 access directly, without having to <<
1166 This can be useful in optimizing th <<
1167 memory. <<
1168 <<
1169 Say N here unless you know what you <<
1170 <<
1171 config LOWMEM_SIZE <<
1172 hex "Maximum low memory size (in byte <<
1173 default "0x30000000" <<
1174 <<
1175 config LOWMEM_CAM_NUM_BOOL <<
1176 bool "Set number of CAMs to use to ma <<
1177 depends on ADVANCED_OPTIONS && PPC_85 <<
1178 help <<
1179 This option allows you to set the m <<
1180 will be used to map low memory. Th <<
1181 available and even more limited num <<
1182 However, using more entries will al <<
1183 can be useful in optimizing the lay <<
1184 <<
1185 Say N here unless you know what you <<
1186 <<
1187 config LOWMEM_CAM_NUM <<
1188 depends on PPC_85xx <<
1189 int "Number of CAMs to use to map low <<
1190 default 3 if !STRICT_KERNEL_RWX <<
1191 default 9 if DATA_SHIFT >= 24 <<
1192 default 12 if DATA_SHIFT >= 22 <<
1193 default 15 <<
1194 <<
1195 config DYNAMIC_MEMSTART <<
1196 bool "Enable page aligned dynamic loa <<
1197 depends on ADVANCED_OPTIONS && FLATME <<
1198 select NONSTATIC_KERNEL <<
1199 help <<
1200 This option enables the kernel to b <<
1201 physical address. The kernel create <<
1202 the address where the kernel is loa <<
1203 the TLB page size of the mapping fo <<
1204 Please refer to the init code for f <<
1205 <<
1206 DYNAMIC_MEMSTART is an easy way of <<
1207 kernel image, where the only restri <<
1208 load address. When this option is e <<
1209 address CONFIG_PHYSICAL_START is ig <<
1210 <<
1211 This option is overridden by CONFIG <<
1212 <<
1213 config PAGE_OFFSET_BOOL <<
1214 bool "Set custom page offset address" <<
1215 depends on ADVANCED_OPTIONS <<
1216 help <<
1217 This option allows you to set the k <<
1218 the kernel will map low memory. Th <<
1219 the virtual memory layout of the sy <<
1220 <<
1221 Say N here unless you know what you <<
1222 <<
1223 config PAGE_OFFSET <<
1224 hex "Virtual address of memory base" <<
1225 default "0xc0000000" <<
1226 <<
1227 config KERNEL_START_BOOL <<
1228 bool "Set custom kernel base address" <<
1229 depends on ADVANCED_OPTIONS <<
1230 help <<
1231 This option allows you to set the k <<
1232 the kernel will be loaded. Normall <<
1233 however there are times (like kdump <<
1234 to be the same. <<
1235 <<
1236 Say N here unless you know what you <<
1237 <<
1238 config KERNEL_START <<
1239 hex "Virtual address of kernel base" <<
1240 default PAGE_OFFSET if PAGE_OFFSET_BO <<
1241 default "0xc2000000" if CRASH_DUMP && <<
1242 default "0xc0000000" <<
1243 <<
1244 config PHYSICAL_START_BOOL <<
1245 bool "Set physical address where the <<
1246 depends on ADVANCED_OPTIONS && FLATME <<
1247 help <<
1248 This gives the physical address whe <<
1249 127
1250 Say N here unless you know what you !! 128 if !MMU
>> 129 menu "Power management options"
1251 130
1252 config PHYSICAL_START !! 131 config PM
1253 hex "Physical address where the kerne !! 132 bool "Power Management support"
1254 default "0x02000000" if PPC_BOOK3S && <<
1255 default "0x00000000" <<
1256 <<
1257 config PHYSICAL_ALIGN <<
1258 hex <<
1259 default "0x04000000" if PPC_85xx <<
1260 help <<
1261 This value puts the alignment restr <<
1262 where kernel is loaded and run from <<
1263 address which meets above alignment <<
1264 <<
1265 config TASK_SIZE_BOOL <<
1266 bool "Set custom user task size" <<
1267 depends on ADVANCED_OPTIONS <<
1268 help 133 help
1269 This option allows you to set the a !! 134 Support processor power management modes
1270 allocated to user tasks. This can <<
1271 virtual memory layout of the system <<
1272 <<
1273 Say N here unless you know what you <<
1274 <<
1275 config TASK_SIZE <<
1276 hex "Size of user task space" if TASK <<
1277 default "0x80000000" if PPC_8xx <<
1278 default "0xb0000000" if PPC_BOOK3S_32 <<
1279 default "0xc0000000" <<
1280 <<
1281 config MODULES_SIZE_BOOL <<
1282 bool "Set custom size for modules/exe <<
1283 depends on EXECMEM && ADVANCED_OPTION <<
1284 help <<
1285 This option allows you to set the s <<
1286 space dedicated for modules/execmem <<
1287 For the time being it is only for 8 <<
1288 platform share it with vmalloc spac <<
1289 <<
1290 Say N here unless you know what you <<
1291 <<
1292 config MODULES_SIZE <<
1293 int "Size of modules/execmem area (In <<
1294 range 1 256 if EXECMEM <<
1295 default 64 if EXECMEM && PPC_BOOK3S_3 <<
1296 default 32 if EXECMEM && PPC_8xx <<
1297 default 0 <<
1298 135
1299 endmenu 136 endmenu
1300 <<
1301 if PPC64 <<
1302 # This value must have zeroes in the bottom 6 <<
1303 config PAGE_OFFSET <<
1304 hex <<
1305 default "0xc000000000000000" <<
1306 config KERNEL_START <<
1307 hex <<
1308 default "0xc000000000000000" <<
1309 config PHYSICAL_START <<
1310 hex <<
1311 default "0x00000000" <<
1312 endif 137 endif
1313 138
1314 config PPC_LIB_RHEAP !! 139 source "arch/m68k/Kconfig.devices"
1315 bool <<
1316 <<
1317 source "arch/powerpc/kvm/Kconfig" <<
1318 <<
1319 source "kernel/livepatch/Kconfig" <<
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