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 <<
88 depends on SMP && (DEBUGGER || KEXEC_C <<
89 default y <<
90 <<
91 config PPC_WATCHDOG <<
92 bool <<
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 3 bool
120 default y 4 default y
121 # !! 5 select ARCH_32BIT_OFF_T
122 # Please keep this list sorted alphabe !! 6 select ARCH_HAS_BINFMT_FLAT
123 # !! 7 select ARCH_HAS_CPU_FINALIZE_INIT if MMU
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 M68K_NONCOHERENT_DMA && !COLDFIRE
132 select ARCH_HAS_DEBUG_VM_PGTABLE !! 10 select ARCH_HAS_SYNC_DMA_FOR_DEVICE if M68K_NONCOHERENT_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 M68K_NONCOHERENT_DMA && !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 !! 22 select GENERIC_LIB_ASHLDI3
205 select GENERIC_PCI_IOMAP !! 23 select GENERIC_LIB_ASHRDI3
206 select GENERIC_PTDUMP !! 24 select GENERIC_LIB_LSHRDI3
207 select GENERIC_SMP_IDLE_THREAD !! 25 select HAS_IOPORT if PCI || ISA || ATARI_ROM_ISA
208 select GENERIC_TIME_VSYSCALL !! 26 select HAVE_ARCH_SECCOMP
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 27 select HAVE_ARCH_SECCOMP_FILTER
229 select HAVE_ARCH_TRACEHOOK <<
230 select HAVE_ASM_MODVERSIONS 28 select HAVE_ASM_MODVERSIONS
231 select HAVE_CONTEXT_TRACKING_USER !! 29 select HAVE_DEBUG_BUGVERBOSE
232 select HAVE_C_RECORDMCOUNT !! 30 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 31 select HAVE_MOD_ARCH_SPECIFIC
264 select HAVE_NMI !! 32 select HAVE_UID16
265 select HAVE_OPTPROBES !! 33 select MMU_GATHER_NO_RANGE if MMU
266 select HAVE_OBJTOOL !! 34 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 35 select MODULES_USE_ELF_RELA
297 select NEED_DMA_MAP_STATE !! 36 select NO_DMA if !MMU && !COLDFIRE
298 select NEED_PER_CPU_EMBED_FIRST_CHUNK !! 37 select OLD_SIGACTION
299 select NEED_PER_CPU_PAGE_FIRST_CHUNK !! 38 select OLD_SIGSUSPEND3
300 select NEED_SG_DMA_LENGTH !! 39 select UACCESS_MEMCPY if !MMU
301 select OF !! 40 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 41
336 config COMPAT !! 42 config CPU_BIG_ENDIAN
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 <<
367 config GENERIC_BUG_RELATIVE_POINTERS <<
368 def_bool y 43 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 44
375 config EPAPR_BOOT !! 45 config ARCH_HAS_ILOG2_U32
376 bool 46 bool
377 help <<
378 Used to allow a board to specify it <<
379 47
380 config DEFAULT_UIMAGE !! 48 config ARCH_HAS_ILOG2_U64
381 bool 49 bool
382 help <<
383 Used to allow a board to specify it <<
384 50
385 config ARCH_HIBERNATION_POSSIBLE !! 51 config GENERIC_HWEIGHT
386 bool 52 bool
387 default y 53 default y
388 54
389 config ARCH_SUSPEND_POSSIBLE !! 55 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 <<
408 <<
409 config PPC_DCR <<
410 bool 56 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 57 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 58
437 config PPC_OF_PLATFORM_PCI !! 59 config GENERIC_CSUM
438 bool 60 bool
439 depends on PCI <<
440 depends on PPC64 # not supported on 32 <<
441 <<
442 config ARCH_SUPPORTS_UPROBES <<
443 def_bool y <<
444 61
445 config PPC_ADV_DEBUG_REGS !! 62 config TIME_LOW_RES
446 bool 63 bool
447 depends on BOOKE <<
448 default y 64 default y
449 65
450 config PPC_ADV_DEBUG_IACS !! 66 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 <<
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 <<
610 config ARCH_SUPPORTS_KEXEC <<
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 67 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 68
749 config NODES_SHIFT !! 69 config HZ
750 int 70 int
751 default "8" if PPC64 !! 71 default 1000 if CLEOPATRA
752 default "4" !! 72 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 73
938 If unsure, say N here. !! 74 config PGTABLE_LEVELS
939 !! 75 default 2 if SUN3 || COLDFIRE
940 config PPC_COPRO_BASE !! 76 default 3
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 <<
980 config CMDLINE_EXTEND <<
981 bool "Extend bootloader kernel argumen <<
982 help <<
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 77
1048 config PPC_SECVAR_SYSFS !! 78 config MMU
1049 bool "Enable sysfs interface for POWE !! 79 bool "MMU-based Paged Memory Management Support"
1050 default y 80 default y
1051 depends on PPC_SECURE_BOOT <<
1052 depends on SYSFS <<
1053 help 81 help
1054 POWER secure variables are managed !! 82 Select if you want MMU-based virtualised addressing space
1055 These variables are exposed to user !! 83 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 84
1059 endmenu !! 85 config MMU_MOTOROLA
1060 <<
1061 config ISA_DMA_API <<
1062 bool 86 bool
1063 default PCI <<
1064 <<
1065 menu "Bus options" <<
1066 <<
1067 config ISA <<
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 <<
1080 depends on ISA_DMA_API <<
1081 default y <<
1082 87
1083 config PPC_INDIRECT_PCI !! 88 config MMU_COLDFIRE
1084 bool 89 bool
1085 depends on PCI <<
1086 default y if 44x <<
1087 90
1088 config SBUS !! 91 config MMU_SUN3
1089 bool 92 bool
>> 93 depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE
1090 94
1091 config FSL_SOC !! 95 config ARCH_SUPPORTS_KEXEC
1092 bool !! 96 def_bool M68KCLASSIC && MMU
1093 <<
1094 config FSL_PCI <<
1095 bool <<
1096 select ARCH_HAS_DMA_SET_MASK <<
1097 select PPC_INDIRECT_PCI <<
1098 select PCI_QUIRKS <<
1099 97
1100 config FSL_PMC !! 98 config BOOTINFO_PROC
1101 bool !! 99 bool "Export bootinfo in procfs"
1102 default y !! 100 depends on KEXEC && M68KCLASSIC
1103 depends on SUSPEND && (PPC_85xx || PP <<
1104 help 101 help
1105 Freescale MPC85xx/MPC86xx power man !! 102 Say Y to export the bootinfo used to boot the kernel in a
1106 (suspend/resume). For MPC83xx see p !! 103 "bootinfo" file in procfs. This is useful with kexec.
1107 104
1108 config PPC4xx_CPM !! 105 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 106
1117 config FSL_LBC !! 107 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 108
1124 config FSL_GTM !! 109 source "arch/m68k/Kconfig.machine"
1125 bool <<
1126 depends on PPC_83xx || QUICC_ENGINE | <<
1127 help <<
1128 Freescale General-purpose Timers su <<
1129 110
1130 config FSL_RIO !! 111 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 112
1138 endmenu 113 endmenu
1139 114
1140 config NONSTATIC_KERNEL !! 115 menu "Kernel Features"
1141 bool <<
1142 <<
1143 menu "Advanced setup" <<
1144 depends on PPC32 <<
1145 116
1146 config ADVANCED_OPTIONS !! 117 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 118
1250 Say N here unless you know what you !! 119 if !MMU
>> 120 menu "Power management options"
1251 121
1252 config PHYSICAL_START !! 122 config PM
1253 hex "Physical address where the kerne !! 123 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 124 help
1269 This option allows you to set the a !! 125 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 126
1299 endmenu 127 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 128 endif
1313 129
1314 config PPC_LIB_RHEAP !! 130 source "arch/m68k/Kconfig.devices"
1315 bool <<
1316 <<
1317 source "arch/powerpc/kvm/Kconfig" <<
1318 <<
1319 source "kernel/livepatch/Kconfig" <<
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