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Commit | Line | Data |
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a0ae9c7c | 1 | source "arch/powerpc/platforms/Kconfig.cputype" |
17e638bc | 2 | |
14cf11af PM |
3 | config PPC32 |
4 | bool | |
5 | default y if !PPC64 | |
6 | ||
234a71a7 | 7 | config 32BIT |
8 | bool | |
9 | default y if PPC32 | |
10 | ||
14cf11af PM |
11 | config 64BIT |
12 | bool | |
13 | default y if PPC64 | |
14 | ||
600715dc JF |
15 | config ARCH_PHYS_ADDR_T_64BIT |
16 | def_bool PPC64 || PHYS_64BIT | |
17 | ||
787d44ca FT |
18 | config ARCH_DMA_ADDR_T_64BIT |
19 | def_bool ARCH_PHYS_ADDR_T_64BIT | |
20 | ||
14cf11af PM |
21 | config MMU |
22 | bool | |
23 | default y | |
24 | ||
9fea59bd ME |
25 | config ARCH_MMAP_RND_BITS_MAX |
26 | # On Book3S 64, the default virtual address space for 64-bit processes | |
27 | # is 2^47 (128TB). As a maximum, allow randomisation to consume up to | |
28 | # 32T of address space (2^45), which should ensure a reasonable gap | |
29 | # between bottom-up and top-down allocations for applications that | |
30 | # consume "normal" amounts of address space. Book3S 64 only supports 64K | |
31 | # and 4K page sizes. | |
32 | default 29 if PPC_BOOK3S_64 && PPC_64K_PAGES # 29 = 45 (32T) - 16 (64K) | |
33 | default 33 if PPC_BOOK3S_64 # 33 = 45 (32T) - 12 (4K) | |
34 | # | |
35 | # On all other 64-bit platforms (currently only Book3E), the virtual | |
36 | # address space is 2^46 (64TB). Allow randomisation to consume up to 16T | |
37 | # of address space (2^44). Only 4K page sizes are supported. | |
38 | default 32 if 64BIT # 32 = 44 (16T) - 12 (4K) | |
39 | # | |
40 | # For 32-bit, use the compat values, as they're the same. | |
41 | default ARCH_MMAP_RND_COMPAT_BITS_MAX | |
42 | ||
43 | config ARCH_MMAP_RND_BITS_MIN | |
44 | # Allow randomisation to consume up to 1GB of address space (2^30). | |
45 | default 14 if 64BIT && PPC_64K_PAGES # 14 = 30 (1GB) - 16 (64K) | |
46 | default 18 if 64BIT # 18 = 30 (1GB) - 12 (4K) | |
47 | # | |
48 | # For 32-bit, use the compat values, as they're the same. | |
49 | default ARCH_MMAP_RND_COMPAT_BITS_MIN | |
50 | ||
51 | config ARCH_MMAP_RND_COMPAT_BITS_MAX | |
52 | # Total virtual address space for 32-bit processes is 2^31 (2GB). | |
53 | # Allow randomisation to consume up to 512MB of address space (2^29). | |
54 | default 11 if PPC_256K_PAGES # 11 = 29 (512MB) - 18 (256K) | |
55 | default 13 if PPC_64K_PAGES # 13 = 29 (512MB) - 16 (64K) | |
56 | default 15 if PPC_16K_PAGES # 15 = 29 (512MB) - 14 (16K) | |
57 | default 17 # 17 = 29 (512MB) - 12 (4K) | |
58 | ||
59 | config ARCH_MMAP_RND_COMPAT_BITS_MIN | |
60 | # Total virtual address space for 32-bit processes is 2^31 (2GB). | |
61 | # Allow randomisation to consume up to 8MB of address space (2^23). | |
62 | default 5 if PPC_256K_PAGES # 5 = 23 (8MB) - 18 (256K) | |
63 | default 7 if PPC_64K_PAGES # 7 = 23 (8MB) - 16 (64K) | |
64 | default 9 if PPC_16K_PAGES # 9 = 23 (8MB) - 14 (16K) | |
65 | default 11 # 11 = 23 (8MB) - 12 (4K) | |
66 | ||
c2a7e818 | 67 | config HAVE_SETUP_PER_CPU_AREA |
e74e3962 TH |
68 | def_bool PPC64 |
69 | ||
c2a7e818 | 70 | config NEED_PER_CPU_EMBED_FIRST_CHUNK |
b32ef636 | 71 | def_bool PPC64 |
72 | ||
551b81f2 ME |
73 | config NR_IRQS |
74 | int "Number of virtual interrupt numbers" | |
859aefc5 | 75 | range 32 32768 |
551b81f2 ME |
76 | default "512" |
77 | help | |
78 | This defines the number of virtual interrupt numbers the kernel | |
79 | can manage. Virtual interrupt numbers are what you see in | |
80 | /proc/interrupts. If you configure your system to have too few, | |
81 | drivers will fail to load or worse - handle with care. | |
82 | ||
ddd703ca NP |
83 | config NMI_IPI |
84 | bool | |
85 | depends on SMP && (DEBUGGER || KEXEC_CORE) | |
86 | default y | |
87 | ||
fd3e0bbc CH |
88 | config STACKTRACE_SUPPORT |
89 | bool | |
90 | default y | |
91 | ||
945feb17 BH |
92 | config TRACE_IRQFLAGS_SUPPORT |
93 | bool | |
945feb17 BH |
94 | default y |
95 | ||
96 | config LOCKDEP_SUPPORT | |
97 | bool | |
98 | default y | |
99 | ||
14cf11af PM |
100 | config RWSEM_GENERIC_SPINLOCK |
101 | bool | |
102 | ||
103 | config RWSEM_XCHGADD_ALGORITHM | |
104 | bool | |
105 | default y | |
106 | ||
95c354fe NP |
107 | config GENERIC_LOCKBREAK |
108 | bool | |
109 | default y | |
110 | depends on SMP && PREEMPT | |
111 | ||
f0d1b0b3 DH |
112 | config ARCH_HAS_ILOG2_U32 |
113 | bool | |
ef55d53c | 114 | default y |
f0d1b0b3 DH |
115 | |
116 | config ARCH_HAS_ILOG2_U64 | |
117 | bool | |
ef55d53c | 118 | default y if 64BIT |
f0d1b0b3 | 119 | |
e779b2f9 AM |
120 | config GENERIC_HWEIGHT |
121 | bool | |
122 | default y | |
123 | ||
817820b0 BH |
124 | config ARCH_HAS_DMA_SET_COHERENT_MASK |
125 | bool | |
126 | ||
14cf11af PM |
127 | config PPC |
128 | bool | |
129 | default y | |
a7d2475a ME |
130 | # |
131 | # Please keep this list sorted alphabetically. | |
132 | # | |
133 | select ARCH_HAS_DEVMEM_IS_ALLOWED | |
134 | select ARCH_HAS_DMA_SET_COHERENT_MASK | |
135 | select ARCH_HAS_ELF_RANDOMIZE | |
136 | select ARCH_HAS_GCOV_PROFILE_ALL | |
137 | select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE | |
138 | select ARCH_HAS_SG_CHAIN | |
139 | select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST | |
140 | select ARCH_HAS_UBSAN_SANITIZE_ALL | |
141 | select ARCH_HAVE_NMI_SAFE_CMPXCHG | |
b7e7c37b | 142 | select ARCH_MIGHT_HAVE_PC_PARPORT |
c74e6d3d | 143 | select ARCH_MIGHT_HAVE_PC_SERIO |
a7d2475a ME |
144 | select ARCH_SUPPORTS_ATOMIC_RMW |
145 | select ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT | |
146 | select ARCH_USE_BUILTIN_BSWAP | |
147 | select ARCH_USE_CMPXCHG_LOCKREF if PPC64 | |
148 | select ARCH_WANT_IPC_PARSE_VERSION | |
77e58496 | 149 | select ARCH_WEAK_RELEASE_ACQUIRE |
d812c0e1 | 150 | select BINFMT_ELF |
a7d2475a ME |
151 | select BUILDTIME_EXTABLE_SORT |
152 | select CLONE_BACKWARDS | |
153 | select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN | |
154 | select EDAC_ATOMIC_SCRUB | |
155 | select EDAC_SUPPORT | |
156 | select GENERIC_ATOMIC64 if PPC32 | |
157 | select GENERIC_CLOCKEVENTS | |
158 | select GENERIC_CLOCKEVENTS_BROADCAST if SMP | |
159 | select GENERIC_CMOS_UPDATE | |
160 | select GENERIC_CPU_AUTOPROBE | |
161 | select GENERIC_IRQ_SHOW | |
162 | select GENERIC_IRQ_SHOW_LEVEL | |
163 | select GENERIC_SMP_IDLE_THREAD | |
164 | select GENERIC_STRNCPY_FROM_USER | |
165 | select GENERIC_STRNLEN_USER | |
166 | select GENERIC_TIME_VSYSCALL_OLD | |
167 | select HAVE_ARCH_AUDITSYSCALL | |
a7d2475a ME |
168 | select HAVE_ARCH_JUMP_LABEL |
169 | select HAVE_ARCH_KGDB | |
9fea59bd ME |
170 | select HAVE_ARCH_MMAP_RND_BITS |
171 | select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT | |
a7d2475a ME |
172 | select HAVE_ARCH_SECCOMP_FILTER |
173 | select HAVE_ARCH_TRACEHOOK | |
174 | select HAVE_CBPF_JIT if !PPC64 | |
175 | select HAVE_CONTEXT_TRACKING if PPC64 | |
176 | select HAVE_DEBUG_KMEMLEAK | |
177 | select HAVE_DEBUG_STACKOVERFLOW | |
178 | select HAVE_DMA_API_DEBUG | |
2b79d696 | 179 | select HAVE_DYNAMIC_FTRACE |
a7d2475a ME |
180 | select HAVE_DYNAMIC_FTRACE_WITH_REGS if MPROFILE_KERNEL |
181 | select HAVE_EBPF_JIT if PPC64 | |
182 | select HAVE_EFFICIENT_UNALIGNED_ACCESS if !(CPU_LITTLE_ENDIAN && POWER7_CPU) | |
183 | select HAVE_FTRACE_MCOUNT_RECORD | |
60ce8f72 | 184 | select HAVE_FUNCTION_GRAPH_TRACER |
a7d2475a | 185 | select HAVE_FUNCTION_TRACER |
65c059bc | 186 | select HAVE_GCC_PLUGINS |
a7d2475a ME |
187 | select HAVE_GENERIC_RCU_GUP |
188 | select HAVE_HW_BREAKPOINT if PERF_EVENTS && (PPC_BOOK3S || PPC_8xx) | |
ec7748b5 | 189 | select HAVE_IDE |
a1f242ff | 190 | select HAVE_IOREMAP_PROT |
a7d2475a ME |
191 | select HAVE_IRQ_EXIT_ON_IRQ_STACK |
192 | select HAVE_KERNEL_GZIP | |
3f550096 | 193 | select HAVE_KPROBES |
ead514d5 | 194 | select HAVE_KPROBES_ON_FTRACE |
9edddaa2 | 195 | select HAVE_KRETPROBES |
a7d2475a | 196 | select HAVE_LIVEPATCH if HAVE_DYNAMIC_FTRACE_WITH_REGS |
95f72d1e | 197 | select HAVE_MEMBLOCK |
1d7cfe18 | 198 | select HAVE_MEMBLOCK_NODE_MAP |
a7d2475a ME |
199 | select HAVE_MOD_ARCH_SPECIFIC |
200 | select HAVE_NMI if PERF_EVENTS | |
4e491d14 | 201 | select HAVE_OPROFILE |
a7d2475a | 202 | select HAVE_OPTPROBES if PPC64 |
cdd6c482 | 203 | select HAVE_PERF_EVENTS |
a7d2475a | 204 | select HAVE_PERF_EVENTS_NMI if PPC64 |
ed4a4ef8 | 205 | select HAVE_PERF_REGS |
17ed7c38 | 206 | select HAVE_PERF_USER_STACK_DUMP |
a7d2475a | 207 | select HAVE_RCU_TABLE_FREE if SMP |
359e4284 | 208 | select HAVE_REGS_AND_STACK_ACCESS_API |
a7d2475a ME |
209 | select HAVE_SYSCALL_TRACEPOINTS |
210 | select HAVE_VIRT_CPU_ACCOUNTING | |
cc79ca69 | 211 | select IRQ_DOMAIN |
e8d2c473 | 212 | select IRQ_FORCED_THREADING |
786d35d4 | 213 | select MODULES_USE_ELF_RELA |
10239733 | 214 | select NO_BOOTMEM |
a7d2475a ME |
215 | select OF |
216 | select OF_EARLY_FLATTREE | |
217 | select OF_RESERVED_MEM | |
218 | select OLD_SIGACTION if PPC32 | |
219 | select OLD_SIGSUSPEND | |
220 | select SPARSE_IRQ | |
221 | select SYSCTL_EXCEPTION_TRACE | |
222 | select VIRT_TO_BUS if !PPC64 | |
223 | # | |
224 | # Please keep this list sorted alphabetically. | |
225 | # | |
14cf11af | 226 | |
7a332b0c | 227 | config GENERIC_CSUM |
d4fde568 | 228 | def_bool n |
7a332b0c | 229 | |
14cf11af PM |
230 | config EARLY_PRINTK |
231 | bool | |
51d3082f | 232 | default y |
14cf11af | 233 | |
b71d47c1 JB |
234 | config PANIC_TIMEOUT |
235 | int | |
236 | default 180 | |
237 | ||
14cf11af PM |
238 | config COMPAT |
239 | bool | |
240 | default y if PPC64 | |
01e31dba | 241 | select COMPAT_BINFMT_ELF |
48b25c43 | 242 | select ARCH_WANT_OLD_COMPAT_IPC |
09a4d5d0 | 243 | select COMPAT_OLD_SIGACTION |
14cf11af PM |
244 | |
245 | config SYSVIPC_COMPAT | |
246 | bool | |
247 | depends on COMPAT && SYSVIPC | |
248 | default y | |
249 | ||
250 | # All PPC32s use generic nvram driver through ppc_md | |
251 | config GENERIC_NVRAM | |
252 | bool | |
253 | default y if PPC32 | |
254 | ||
ae1e9130 | 255 | config SCHED_OMIT_FRAME_POINTER |
14cf11af PM |
256 | bool |
257 | default y | |
258 | ||
259 | config ARCH_MAY_HAVE_PC_FDC | |
260 | bool | |
3484a31f | 261 | default PCI |
14cf11af | 262 | |
08264cbc KG |
263 | config PPC_UDBG_16550 |
264 | bool | |
265 | default n | |
266 | ||
08264cbc KG |
267 | config GENERIC_TBSYNC |
268 | bool | |
269 | default y if PPC32 && SMP | |
270 | default n | |
271 | ||
e65e1fc2 AV |
272 | config AUDIT_ARCH |
273 | bool | |
274 | default y | |
275 | ||
73c9ceab JF |
276 | config GENERIC_BUG |
277 | bool | |
278 | default y | |
279 | depends on BUG | |
280 | ||
b3028878 | 281 | config SYS_SUPPORTS_APM_EMULATION |
58da10bb | 282 | default y if PMAC_APM_EMU |
b3028878 JB |
283 | bool |
284 | ||
6c5b59b9 DG |
285 | config EPAPR_BOOT |
286 | bool | |
287 | help | |
288 | Used to allow a board to specify it wants an ePAPR compliant wrapper. | |
289 | default n | |
290 | ||
f4fc4a5b KG |
291 | config DEFAULT_UIMAGE |
292 | bool | |
293 | help | |
294 | Used to allow a board to specify it wants a uImage built by default | |
295 | default n | |
296 | ||
801e4062 JB |
297 | config ARCH_HIBERNATION_POSSIBLE |
298 | bool | |
543b9fd3 JB |
299 | default y |
300 | ||
f4cb5700 JB |
301 | config ARCH_SUSPEND_POSSIBLE |
302 | def_bool y | |
4ffd6952 | 303 | depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ |
d0832a75 ZC |
304 | (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \ |
305 | || 44x || 40x | |
f4cb5700 | 306 | |
4c75a6f4 BH |
307 | config PPC_DCR_NATIVE |
308 | bool | |
309 | default n | |
310 | ||
311 | config PPC_DCR_MMIO | |
312 | bool | |
313 | default n | |
314 | ||
315 | config PPC_DCR | |
316 | bool | |
317 | depends on PPC_DCR_NATIVE || PPC_DCR_MMIO | |
318 | default y | |
319 | ||
4c9d2800 BH |
320 | config PPC_OF_PLATFORM_PCI |
321 | bool | |
373a6da1 | 322 | depends on PCI |
4c9d2800 BH |
323 | depends on PPC64 # not supported on 32 bits yet |
324 | default n | |
325 | ||
6a11f75b | 326 | config ARCH_SUPPORTS_DEBUG_PAGEALLOC |
ce614c3c | 327 | depends on PPC32 || PPC_STD_MMU_64 |
6a11f75b AM |
328 | def_bool y |
329 | ||
8b7b80b9 AM |
330 | config ARCH_SUPPORTS_UPROBES |
331 | def_bool y | |
332 | ||
172ae2e7 DK |
333 | config PPC_ADV_DEBUG_REGS |
334 | bool | |
335 | depends on 40x || BOOKE | |
336 | default y | |
337 | ||
338 | config PPC_ADV_DEBUG_IACS | |
339 | int | |
340 | depends on PPC_ADV_DEBUG_REGS | |
341 | default 4 if 44x | |
342 | default 2 | |
343 | ||
344 | config PPC_ADV_DEBUG_DACS | |
345 | int | |
346 | depends on PPC_ADV_DEBUG_REGS | |
347 | default 2 | |
348 | ||
349 | config PPC_ADV_DEBUG_DVCS | |
350 | int | |
351 | depends on PPC_ADV_DEBUG_REGS | |
352 | default 2 if 44x | |
353 | default 0 | |
354 | ||
355 | config PPC_ADV_DEBUG_DAC_RANGE | |
356 | bool | |
357 | depends on PPC_ADV_DEBUG_REGS && 44x | |
358 | default y | |
359 | ||
5e249d45 SP |
360 | config PPC_EMULATE_SSTEP |
361 | bool | |
362 | default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT | |
363 | ||
1c98025c SW |
364 | config ZONE_DMA32 |
365 | bool | |
366 | default y if PPC64 | |
367 | ||
06ef42a1 KS |
368 | config PGTABLE_LEVELS |
369 | int | |
370 | default 2 if !PPC64 | |
368ced78 | 371 | default 3 if PPC_64K_PAGES && !PPC_BOOK3S_64 |
06ef42a1 KS |
372 | default 4 |
373 | ||
14cf11af PM |
374 | source "init/Kconfig" |
375 | ||
dc52ddc0 MH |
376 | source "kernel/Kconfig.freezer" |
377 | ||
a2d2e1ec | 378 | source "arch/powerpc/sysdev/Kconfig" |
4330f5da | 379 | source "arch/powerpc/platforms/Kconfig" |
14cf11af | 380 | |
14cf11af PM |
381 | menu "Kernel options" |
382 | ||
383 | config HIGHMEM | |
384 | bool "High memory support" | |
385 | depends on PPC32 | |
386 | ||
387 | source kernel/Kconfig.hz | |
388 | source kernel/Kconfig.preempt | |
389 | source "fs/Kconfig.binfmt" | |
390 | ||
ba72cb8c MG |
391 | config HUGETLB_PAGE_SIZE_VARIABLE |
392 | bool | |
393 | depends on HUGETLB_PAGE | |
394 | default y | |
395 | ||
14cf11af PM |
396 | config MATH_EMULATION |
397 | bool "Math emulation" | |
4e63f8ed | 398 | depends on 4xx || 8xx || PPC_MPC832x || BOOKE |
14cf11af PM |
399 | ---help--- |
400 | Some PowerPC chips designed for embedded applications do not have | |
401 | a floating-point unit and therefore do not implement the | |
402 | floating-point instructions in the PowerPC instruction set. If you | |
403 | say Y here, the kernel will include code to emulate a floating-point | |
404 | unit, which will allow programs that use floating-point | |
405 | instructions to run. | |
406 | ||
4e63f8ed BH |
407 | This is also useful to emulate missing (optional) instructions |
408 | such as fsqrt on cores that do have an FPU but do not implement | |
409 | them (such as Freescale BookE). | |
410 | ||
e05c0e81 KH |
411 | choice |
412 | prompt "Math emulation options" | |
413 | default MATH_EMULATION_FULL | |
414 | depends on MATH_EMULATION | |
415 | ||
416 | config MATH_EMULATION_FULL | |
417 | bool "Emulate all the floating point instructions" | |
418 | ---help--- | |
419 | Select this option will enable the kernel to support to emulate | |
420 | all the floating point instructions. If your SoC doesn't have | |
421 | a FPU, you should select this. | |
422 | ||
423 | config MATH_EMULATION_HW_UNIMPLEMENTED | |
424 | bool "Just emulate the FPU unimplemented instructions" | |
425 | ---help--- | |
426 | Select this if you know there does have a hardware FPU on your | |
427 | SoC, but some floating point instructions are not implemented by that. | |
428 | ||
429 | endchoice | |
430 | ||
3d72bbc4 MN |
431 | config PPC_TRANSACTIONAL_MEM |
432 | bool "Transactional Memory support for POWERPC" | |
433 | depends on PPC_BOOK3S_64 | |
434 | depends on SMP | |
7b37a123 MN |
435 | select ALTIVEC |
436 | select VSX | |
3d72bbc4 MN |
437 | default n |
438 | ---help--- | |
439 | Support user-mode Transactional Memory on POWERPC. | |
440 | ||
8c50b72a TD |
441 | config DISABLE_MPROFILE_KERNEL |
442 | bool "Disable use of mprofile-kernel for kernel tracing" | |
443 | depends on PPC64 && CPU_LITTLE_ENDIAN | |
444 | default y | |
445 | help | |
446 | Selecting this options disables use of the mprofile-kernel ABI for | |
447 | kernel tracing. That will cause options such as live patching | |
448 | (CONFIG_LIVEPATCH) which depend on CONFIG_DYNAMIC_FTRACE_WITH_REGS to | |
449 | be disabled also. | |
450 | ||
451 | If you have a toolchain which supports mprofile-kernel, then you can | |
496e9cb5 AB |
452 | disable this. Otherwise leave it enabled. If you're not sure, say |
453 | "Y". | |
8c50b72a TD |
454 | |
455 | config MPROFILE_KERNEL | |
456 | depends on PPC64 && CPU_LITTLE_ENDIAN | |
457 | def_bool !DISABLE_MPROFILE_KERNEL | |
458 | ||
43c9127d NP |
459 | config USE_THIN_ARCHIVES |
460 | bool "Build the kernel using thin archives" | |
461 | default n | |
462 | select THIN_ARCHIVES | |
463 | help | |
464 | Build the kernel using thin archives. | |
465 | If you're unsure say N. | |
466 | ||
fb3475e9 FT |
467 | config IOMMU_HELPER |
468 | def_bool PPC64 | |
469 | ||
ec3cf2ec BB |
470 | config SWIOTLB |
471 | bool "SWIOTLB support" | |
472 | default n | |
473 | select IOMMU_HELPER | |
474 | ---help--- | |
475 | Support for IO bounce buffering for systems without an IOMMU. | |
476 | This allows us to DMA to the full physical address space on | |
477 | platforms where the size of a physical address is larger | |
478 | than the bus address. Not all platforms support this. | |
479 | ||
14cf11af PM |
480 | config HOTPLUG_CPU |
481 | bool "Support for enabling/disabling CPUs" | |
40b31360 | 482 | depends on SMP && (PPC_PSERIES || \ |
2f4f1f81 | 483 | PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE) |
14cf11af PM |
484 | ---help--- |
485 | Say Y here to be able to disable and re-enable individual | |
486 | CPUs at runtime on SMP machines. | |
487 | ||
488 | Say N if you are unsure. | |
489 | ||
12633e80 NF |
490 | config ARCH_CPU_PROBE_RELEASE |
491 | def_bool y | |
492 | depends on HOTPLUG_CPU | |
493 | ||
cc57637b YG |
494 | config ARCH_ENABLE_MEMORY_HOTPLUG |
495 | def_bool y | |
496 | ||
a99824f3 BP |
497 | config ARCH_HAS_WALK_MEMORY |
498 | def_bool y | |
499 | ||
1482471d BP |
500 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
501 | def_bool y | |
502 | ||
f2296a3d MS |
503 | config PPC64_SUPPORTS_MEMORY_FAILURE |
504 | bool "Add support for memory hwpoison" | |
505 | depends on PPC_BOOK3S_64 | |
506 | default "y" if PPC_POWERNV | |
507 | select ARCH_SUPPORTS_MEMORY_FAILURE | |
508 | ||
14cf11af | 509 | config KEXEC |
642e56ff | 510 | bool "kexec system call" |
96eea642 | 511 | depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) || PPC_BOOK3E |
2965faa5 | 512 | select KEXEC_CORE |
14cf11af PM |
513 | help |
514 | kexec is a system call that implements the ability to shutdown your | |
515 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 516 | but it is independent of the system firmware. And like a reboot |
14cf11af PM |
517 | you can start any kernel with it, not just Linux. |
518 | ||
1f1332f7 | 519 | The name comes from the similarity to the exec system call. |
14cf11af PM |
520 | |
521 | It is an ongoing process to be certain the hardware in a machine | |
522 | is properly shutdown, so do not be surprised if this code does not | |
bf220695 GU |
523 | initially work for you. As of this writing the exact hardware |
524 | interface is strongly in flux, so no good recommendation can be | |
525 | made. | |
14cf11af | 526 | |
80f60e50 TJB |
527 | config KEXEC_FILE |
528 | bool "kexec file based system call" | |
529 | select KEXEC_CORE | |
467d2782 | 530 | select HAVE_IMA_KEXEC |
80f60e50 TJB |
531 | select BUILD_BIN2C |
532 | depends on PPC64 | |
533 | depends on CRYPTO=y | |
534 | depends on CRYPTO_SHA256=y | |
535 | help | |
536 | This is a new version of the kexec system call. This call is | |
537 | file based and takes in file descriptors as system call arguments | |
538 | for kernel and initramfs as opposed to a list of segments as is the | |
539 | case for the older kexec call. | |
540 | ||
4c91bd6e KH |
541 | config RELOCATABLE |
542 | bool "Build a relocatable kernel" | |
084a275e | 543 | depends on PPC64 || (FLATMEM && (44x || FSL_BOOKE)) |
4c91bd6e | 544 | select NONSTATIC_KERNEL |
71810db2 | 545 | select MODULE_REL_CRCS if MODVERSIONS |
4c91bd6e KH |
546 | help |
547 | This builds a kernel image that is capable of running at the | |
548 | location the kernel is loaded at. For ppc32, there is no any | |
549 | alignment restrictions, and this feature is a superset of | |
550 | DYNAMIC_MEMSTART and hence overrides it. For ppc64, we should use | |
551 | 16k-aligned base address. The kernel is linked as a | |
552 | position-independent executable (PIE) and contains dynamic relocations | |
553 | which are processed early in the bootup process. | |
554 | ||
555 | One use is for the kexec on panic case where the recovery kernel | |
556 | must live at a different physical address than the primary | |
557 | kernel. | |
558 | ||
559 | Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address | |
560 | it has been loaded at and the compile time physical addresses | |
561 | CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START | |
562 | setting can still be useful to bootwrappers that need to know the | |
563 | load address of the kernel (eg. u-boot/mkimage). | |
564 | ||
70839d20 NP |
565 | config RELOCATABLE_TEST |
566 | bool "Test relocatable kernel" | |
567 | depends on (PPC64 && RELOCATABLE) | |
568 | default n | |
569 | help | |
570 | This runs the relocatable kernel at the address it was initially | |
571 | loaded at, which tends to be non-zero and therefore test the | |
572 | relocation code. | |
573 | ||
e8625d46 | 574 | config CRASH_DUMP |
22bd0177 | 575 | bool "Build a dump capture kernel" |
47da4219 | 576 | depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) |
084a275e | 577 | select RELOCATABLE if PPC64 || 44x || FSL_BOOKE |
e8625d46 | 578 | help |
22bd0177 | 579 | Build a kernel suitable for use as a dump capture kernel. |
54622f10 MK |
580 | The same kernel binary can be used as production kernel and dump |
581 | capture kernel. | |
e8625d46 | 582 | |
eb39c880 MS |
583 | config FA_DUMP |
584 | bool "Firmware-assisted dump" | |
22bd0177 HB |
585 | depends on PPC64 && PPC_RTAS |
586 | select CRASH_CORE | |
587 | select CRASH_DUMP | |
242f271c | 588 | help |
eb39c880 MS |
589 | A robust mechanism to get reliable kernel crash dump with |
590 | assistance from firmware. This approach does not use kexec, | |
22bd0177 | 591 | instead firmware assists in booting the capture kernel |
eb39c880 MS |
592 | while preserving memory contents. Firmware-assisted dump |
593 | is meant to be a kdump replacement offering robustness and | |
594 | speed not possible without system firmware assistance. | |
242f271c MA |
595 | |
596 | If unsure, say "N" | |
597 | ||
14cf11af PM |
598 | config IRQ_ALL_CPUS |
599 | bool "Distribute interrupts on all CPUs by default" | |
6cf09b9d | 600 | depends on SMP |
14cf11af PM |
601 | help |
602 | This option gives the kernel permission to distribute IRQs across | |
603 | multiple CPUs. Saying N here will route all IRQs to the first | |
604 | CPU. Generally saying Y is safe, although some problems have been | |
605 | reported with SMP Power Macintoshes with this option enabled. | |
606 | ||
ffa27b6b AW |
607 | config NUMA |
608 | bool "NUMA support" | |
609 | depends on PPC64 | |
610 | default y if SMP && PPC_PSERIES | |
611 | ||
c80d79d7 YG |
612 | config NODES_SHIFT |
613 | int | |
ea55bf29 | 614 | default "8" if PPC64 |
c80d79d7 YG |
615 | default "4" |
616 | depends on NEED_MULTIPLE_NODES | |
617 | ||
8c272261 NA |
618 | config USE_PERCPU_NUMA_NODE_ID |
619 | def_bool y | |
620 | depends on NUMA | |
621 | ||
64bb80d8 NA |
622 | config HAVE_MEMORYLESS_NODES |
623 | def_bool y | |
624 | depends on NUMA | |
625 | ||
14cf11af PM |
626 | config ARCH_SELECT_MEMORY_MODEL |
627 | def_bool y | |
628 | depends on PPC64 | |
629 | ||
630 | config ARCH_FLATMEM_ENABLE | |
9100b205 AW |
631 | def_bool y |
632 | depends on (PPC64 && !NUMA) || PPC32 | |
14cf11af | 633 | |
45fb6cea | 634 | config ARCH_SPARSEMEM_ENABLE |
14cf11af | 635 | def_bool y |
9100b205 | 636 | depends on PPC64 |
d29eff7b | 637 | select SPARSEMEM_VMEMMAP_ENABLE |
14cf11af | 638 | |
45fb6cea | 639 | config ARCH_SPARSEMEM_DEFAULT |
14cf11af | 640 | def_bool y |
7b3912f4 | 641 | depends on PPC_BOOK3S_64 |
14cf11af | 642 | |
5a1eb5c4 | 643 | config SYS_SUPPORTS_HUGETLBFS |
41151e77 | 644 | bool |
5a1eb5c4 | 645 | |
f6853eb5 ME |
646 | config ILLEGAL_POINTER_VALUE |
647 | hex | |
648 | # This is roughly half way between the top of user space and the bottom | |
649 | # of kernel space, which seems about as good as we can get. | |
650 | default 0x5deadbeef0000000 if PPC64 | |
651 | default 0 | |
652 | ||
c67c3cb4 | 653 | source "mm/Kconfig" |
14cf11af | 654 | |
7e9191da MK |
655 | config ARCH_MEMORY_PROBE |
656 | def_bool y | |
657 | depends on MEMORY_HOTPLUG | |
658 | ||
75167957 AW |
659 | # Some NUMA nodes have memory ranges that span |
660 | # other nodes. Even though a pfn is valid and | |
661 | # between a node's start and end pfns, it may not | |
662 | # reside on that node. See memmap_init_zone() | |
663 | # for details. | |
664 | config NODES_SPAN_OTHER_NODES | |
665 | def_bool y | |
666 | depends on NEED_MULTIPLE_NODES | |
667 | ||
e1240122 YT |
668 | config STDBINUTILS |
669 | bool "Using standard binutils settings" | |
670 | depends on 44x | |
671 | default y | |
672 | help | |
673 | Turning this option off allows you to select 256KB PAGE_SIZE on 44x. | |
674 | Note, that kernel will be able to run only those applications, | |
675 | which had been compiled using binutils later than 2.17.50.0.3 with | |
676 | '-zmax-page-size' set to 256K (the default is 64K). Or, if using | |
677 | the older binutils, you can patch them with a trivial patch, which | |
678 | changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. | |
679 | ||
ca9153a3 IY |
680 | choice |
681 | prompt "Page size" | |
682 | default PPC_4K_PAGES | |
3c726f8d | 683 | help |
ca9153a3 IY |
684 | Select the kernel logical page size. Increasing the page size |
685 | will reduce software overhead at each page boundary, allow | |
686 | hardware prefetch mechanisms to be more effective, and allow | |
687 | larger dma transfers increasing IO efficiency and reducing | |
688 | overhead. However the utilization of memory will increase. | |
689 | For example, each cached file will using a multiple of the | |
690 | page size to hold its contents and the difference between the | |
691 | end of file and the end of page is wasted. | |
692 | ||
693 | Some dedicated systems, such as software raid serving with | |
694 | accelerated calculations, have shown significant increases. | |
695 | ||
696 | If you configure a 64 bit kernel for 64k pages but the | |
697 | processor does not support them, then the kernel will simulate | |
698 | them with 4k pages, loading them on demand, but with the | |
699 | reduced software overhead and larger internal fragmentation. | |
700 | For the 32 bit kernel, a large page option will not be offered | |
701 | unless it is supported by the configured processor. | |
702 | ||
703 | If unsure, choose 4K_PAGES. | |
704 | ||
705 | config PPC_4K_PAGES | |
706 | bool "4k page size" | |
19f97c98 | 707 | select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64 |
ca9153a3 IY |
708 | |
709 | config PPC_16K_PAGES | |
55f8b5b8 ME |
710 | bool "16k page size" |
711 | depends on 44x || PPC_8xx | |
ca9153a3 IY |
712 | |
713 | config PPC_64K_PAGES | |
55f8b5b8 ME |
714 | bool "64k page size" |
715 | depends on !PPC_FSL_BOOK3E && (44x || PPC_STD_MMU_64 || PPC_BOOK3E_64) | |
19f97c98 | 716 | select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64 |
ca9153a3 | 717 | |
e1240122 | 718 | config PPC_256K_PAGES |
55f8b5b8 ME |
719 | bool "256k page size" |
720 | depends on 44x && !STDBINUTILS | |
e1240122 YT |
721 | help |
722 | Make the page size 256k. | |
723 | ||
724 | As the ELF standard only requires alignment to support page | |
725 | sizes up to 64k, you will need to compile all of your user | |
726 | space applications with a non-standard binutils settings | |
727 | (see the STDBINUTILS description for details). | |
728 | ||
729 | Say N unless you know what you are doing. | |
730 | ||
ca9153a3 | 731 | endchoice |
3c726f8d | 732 | |
47613407 HM |
733 | config THREAD_SHIFT |
734 | int "Thread shift" if EXPERT | |
735 | range 13 15 | |
736 | default "15" if PPC_256K_PAGES | |
737 | default "14" if PPC64 | |
738 | default "13" | |
739 | help | |
740 | Used to define the stack size. The default is almost always what you | |
741 | want. Only change this if you know what you are doing. | |
742 | ||
53bcddb9 SR |
743 | config FORCE_MAX_ZONEORDER |
744 | int "Maximum zone order" | |
a7ee5395 | 745 | range 8 9 if PPC64 && PPC_64K_PAGES |
066c4b87 | 746 | default "9" if PPC64 && PPC_64K_PAGES |
d5a1e42c | 747 | range 13 13 if PPC64 && !PPC_64K_PAGES |
066c4b87 BH |
748 | default "13" if PPC64 && !PPC_64K_PAGES |
749 | range 9 64 if PPC32 && PPC_16K_PAGES | |
750 | default "9" if PPC32 && PPC_16K_PAGES | |
751 | range 7 64 if PPC32 && PPC_64K_PAGES | |
752 | default "7" if PPC32 && PPC_64K_PAGES | |
753 | range 5 64 if PPC32 && PPC_256K_PAGES | |
754 | default "5" if PPC32 && PPC_256K_PAGES | |
ebe40c5c | 755 | range 11 64 |
53bcddb9 SR |
756 | default "11" |
757 | help | |
758 | The kernel memory allocator divides physically contiguous memory | |
759 | blocks into "zones", where each zone is a power of two number of | |
760 | pages. This option selects the largest power of two that the kernel | |
761 | keeps in the memory allocator. If you need to allocate very large | |
762 | blocks of physically contiguous memory, then you may need to | |
763 | increase this value. | |
764 | ||
765 | This config option is actually maximum order plus one. For example, | |
766 | a value of 11 means that the largest free memory block is 2^10 pages. | |
767 | ||
768 | The page size is not necessarily 4KB. For example, on 64-bit | |
769 | systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep | |
770 | this in mind when choosing a value for this option. | |
771 | ||
fa28237c PM |
772 | config PPC_SUBPAGE_PROT |
773 | bool "Support setting protections for 4k subpages" | |
ca9153a3 | 774 | depends on PPC_STD_MMU_64 && PPC_64K_PAGES |
fa28237c PM |
775 | help |
776 | This option adds support for a system call to allow user programs | |
777 | to set access permissions (read/write, readonly, or no access) | |
778 | on the 4k subpages of each 64k page. | |
779 | ||
e83d0169 IM |
780 | config PPC_COPRO_BASE |
781 | bool | |
782 | default n | |
783 | ||
14cf11af PM |
784 | config SCHED_SMT |
785 | bool "SMT (Hyperthreading) scheduler support" | |
786 | depends on PPC64 && SMP | |
14cf11af PM |
787 | help |
788 | SMT scheduler support improves the CPU scheduler's decision making | |
789 | when dealing with POWER5 cpus at a cost of slightly increased | |
790 | overhead in some places. If unsure say N here. | |
791 | ||
b92a66a6 MN |
792 | config PPC_DENORMALISATION |
793 | bool "PowerPC denormalisation exception handling" | |
794 | depends on PPC_BOOK3S_64 | |
4e90a2a7 | 795 | default "y" if PPC_POWERNV |
b92a66a6 MN |
796 | ---help--- |
797 | Add support for handling denormalisation of single precision | |
798 | values. Useful for bare metal only. If unsure say Y here. | |
799 | ||
14cf11af PM |
800 | config CMDLINE_BOOL |
801 | bool "Default bootloader kernel arguments" | |
14cf11af PM |
802 | |
803 | config CMDLINE | |
804 | string "Initial kernel command string" | |
805 | depends on CMDLINE_BOOL | |
806 | default "console=ttyS0,9600 console=tty0 root=/dev/sda2" | |
807 | help | |
808 | On some platforms, there is currently no way for the boot loader to | |
809 | pass arguments to the kernel. For these platforms, you can supply | |
810 | some command-line options at build time by entering them here. In | |
811 | most cases you will need to specify the root device here. | |
812 | ||
eb3b80f6 SS |
813 | config CMDLINE_FORCE |
814 | bool "Always use the default kernel command string" | |
815 | depends on CMDLINE_BOOL | |
816 | help | |
817 | Always use the default kernel command string, even if the boot | |
818 | loader passes other arguments to the kernel. | |
819 | This is useful if you cannot or don't want to change the | |
820 | command-line options your boot loader passes to the kernel. | |
821 | ||
c356aa45 GL |
822 | config EXTRA_TARGETS |
823 | string "Additional default image types" | |
824 | help | |
825 | List additional targets to be built by the bootwrapper here (separated | |
826 | by spaces). This is useful for targets that depend of device tree | |
827 | files in the .dts directory. | |
828 | ||
829 | Targets in this list will be build as part of the default build | |
830 | target, or when the user does a 'make zImage' or a | |
831 | 'make zImage.initrd'. | |
832 | ||
833 | If unsure, leave blank | |
834 | ||
b28f5081 JB |
835 | config ARCH_WANTS_FREEZER_CONTROL |
836 | def_bool y | |
837 | depends on ADB_PMU | |
838 | ||
14cf11af | 839 | source kernel/power/Kconfig |
14cf11af PM |
840 | |
841 | config SECCOMP | |
842 | bool "Enable seccomp to safely compute untrusted bytecode" | |
843 | depends on PROC_FS | |
844 | default y | |
845 | help | |
846 | This kernel feature is useful for number crunching applications | |
847 | that may need to compute untrusted bytecode during their | |
848 | execution. By using pipes or other transports made available to | |
849 | the process as file descriptors supporting the read/write | |
850 | syscalls, it's possible to isolate those applications in | |
851 | their own address space using seccomp. Once seccomp is | |
852 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
853 | and the task is only allowed to execute a few safe syscalls | |
854 | defined by each seccomp mode. | |
855 | ||
856 | If unsure, say Y. Only embedded should say N here. | |
857 | ||
858 | endmenu | |
859 | ||
860 | config ISA_DMA_API | |
861 | bool | |
3d066d77 | 862 | default PCI |
14cf11af PM |
863 | |
864 | menu "Bus options" | |
865 | ||
866 | config ISA | |
867 | bool "Support for ISA-bus hardware" | |
933ee711 | 868 | depends on PPC_CHRP |
f9bd170a | 869 | select PPC_I8259 |
14cf11af PM |
870 | help |
871 | Find out whether you have ISA slots on your motherboard. ISA is the | |
872 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
873 | inside your box. If you have an Apple machine, say N here; if you | |
933ee711 PB |
874 | have an IBM RS/6000 or pSeries machine, say Y. If you have an |
875 | embedded board, consult your board documentation. | |
14cf11af | 876 | |
5ac6da66 CL |
877 | config ZONE_DMA |
878 | bool | |
879 | default y | |
880 | ||
af407c6d FT |
881 | config NEED_DMA_MAP_STATE |
882 | def_bool (PPC64 || NOT_COHERENT_CACHE) | |
883 | ||
e32205eb FT |
884 | config NEED_SG_DMA_LENGTH |
885 | def_bool y | |
886 | ||
14cf11af PM |
887 | config GENERIC_ISA_DMA |
888 | bool | |
1927445a | 889 | depends on ISA_DMA_API |
14cf11af PM |
890 | default y |
891 | ||
25635c71 PM |
892 | config PPC_INDIRECT_PCI |
893 | bool | |
894 | depends on PCI | |
63dafe57 | 895 | default y if 40x || 44x |
25635c71 PM |
896 | default n |
897 | ||
14cf11af PM |
898 | config EISA |
899 | bool | |
900 | ||
901 | config SBUS | |
902 | bool | |
903 | ||
08264cbc KG |
904 | config FSL_SOC |
905 | bool | |
906 | ||
55c44991 RZ |
907 | config FSL_PCI |
908 | bool | |
909 | select PPC_INDIRECT_PCI | |
d0839118 | 910 | select PCI_QUIRKS |
55c44991 | 911 | |
4ffd6952 AV |
912 | config FSL_PMC |
913 | bool | |
914 | default y | |
915 | depends on SUSPEND && (PPC_85xx || PPC_86xx) | |
916 | help | |
917 | Freescale MPC85xx/MPC86xx power management controller support | |
918 | (suspend/resume). For MPC83xx see platforms/83xx/suspend.c | |
919 | ||
d164f6d4 VG |
920 | config PPC4xx_CPM |
921 | bool | |
922 | default y | |
923 | depends on SUSPEND && (44x || 40x) | |
924 | help | |
925 | PPC4xx Clock Power Management (CPM) support (suspend/resume). | |
926 | It also enables support for two different idle states (idle-wait | |
927 | and idle-doze). | |
928 | ||
2a706919 SR |
929 | config 4xx_SOC |
930 | bool | |
931 | ||
acaa7aa3 | 932 | config FSL_LBC |
3ab8f2a2 | 933 | bool "Freescale Local Bus support" |
acaa7aa3 | 934 | help |
3ab8f2a2 RZ |
935 | Enables reporting of errors from the Freescale local bus |
936 | controller. Also contains some common code used by | |
937 | drivers for specific local bus peripherals. | |
acaa7aa3 | 938 | |
83ff9dcf AV |
939 | config FSL_GTM |
940 | bool | |
941 | depends on PPC_83xx || QUICC_ENGINE || CPM2 | |
942 | help | |
943 | Freescale General-purpose Timers support | |
944 | ||
14cf11af PM |
945 | # Yes MCA RS/6000s exist but Linux-PPC does not currently support any |
946 | config MCA | |
947 | bool | |
948 | ||
b500563b JR |
949 | # Platforms that what PCI turned unconditionally just do select PCI |
950 | # in their config node. Platforms that want to choose at config | |
951 | # time should select PPC_PCI_CHOICE | |
952 | config PPC_PCI_CHOICE | |
953 | bool | |
954 | ||
14cf11af | 955 | config PCI |
b500563b JR |
956 | bool "PCI support" if PPC_PCI_CHOICE |
957 | default y if !40x && !CPM2 && !8xx && !PPC_83xx \ | |
bcc48591 | 958 | && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON |
14cf11af | 959 | default PCI_QSPAN if !4xx && !CPM2 && 8xx |
335b8cf7 | 960 | select GENERIC_PCI_IOMAP |
14cf11af PM |
961 | help |
962 | Find out whether your system includes a PCI bus. PCI is the name of | |
963 | a bus system, i.e. the way the CPU talks to the other stuff inside | |
964 | your box. If you say Y here, the kernel will include drivers and | |
965 | infrastructure code to support PCI bus devices. | |
966 | ||
967 | config PCI_DOMAINS | |
36e23590 MW |
968 | def_bool PCI |
969 | ||
970 | config PCI_SYSCALL | |
971 | def_bool PCI | |
14cf11af | 972 | |
14cf11af PM |
973 | config PCI_QSPAN |
974 | bool "QSpan PCI" | |
975 | depends on !4xx && !CPM2 && 8xx | |
f9bd170a | 976 | select PPC_I8259 |
14cf11af PM |
977 | help |
978 | Say Y here if you have a system based on a Motorola 8xx-series | |
979 | embedded processor with a QSPAN PCI interface, otherwise say N. | |
980 | ||
981 | config PCI_8260 | |
982 | bool | |
983 | depends on PCI && 8260 | |
25635c71 | 984 | select PPC_INDIRECT_PCI |
14cf11af PM |
985 | default y |
986 | ||
14cf11af PM |
987 | source "drivers/pci/Kconfig" |
988 | ||
989 | source "drivers/pcmcia/Kconfig" | |
990 | ||
f1f389d5 ZW |
991 | config HAS_RAPIDIO |
992 | bool | |
993 | default n | |
994 | ||
995 | config RAPIDIO | |
56abde72 | 996 | tristate "RapidIO support" |
388b78ad | 997 | depends on HAS_RAPIDIO || PCI |
f1f389d5 ZW |
998 | help |
999 | If you say Y here, the kernel will include drivers and | |
1000 | infrastructure code to support RapidIO interconnect devices. | |
1001 | ||
388b78ad AB |
1002 | config FSL_RIO |
1003 | bool "Freescale Embedded SRIO Controller support" | |
56abde72 | 1004 | depends on RAPIDIO = y && HAS_RAPIDIO |
388b78ad AB |
1005 | default "n" |
1006 | ---help--- | |
1007 | Include support for RapidIO controller on Freescale embedded | |
1008 | processors (MPC8548, MPC8641, etc). | |
1009 | ||
f1f389d5 ZW |
1010 | source "drivers/rapidio/Kconfig" |
1011 | ||
14cf11af PM |
1012 | endmenu |
1013 | ||
0f890c8d SP |
1014 | config NONSTATIC_KERNEL |
1015 | bool | |
1016 | default n | |
1017 | ||
14cf11af PM |
1018 | menu "Advanced setup" |
1019 | depends on PPC32 | |
1020 | ||
1021 | config ADVANCED_OPTIONS | |
1022 | bool "Prompt for advanced kernel configuration options" | |
1023 | help | |
1024 | This option will enable prompting for a variety of advanced kernel | |
1025 | configuration options. These options can cause the kernel to not | |
1026 | work if they are set incorrectly, but can be used to optimize certain | |
1027 | aspects of kernel memory management. | |
1028 | ||
1029 | Unless you know what you are doing, say N here. | |
1030 | ||
1031 | comment "Default settings for advanced configuration options are used" | |
1032 | depends on !ADVANCED_OPTIONS | |
1033 | ||
14cf11af PM |
1034 | config LOWMEM_SIZE_BOOL |
1035 | bool "Set maximum low memory" | |
1036 | depends on ADVANCED_OPTIONS | |
1037 | help | |
1038 | This option allows you to set the maximum amount of memory which | |
1039 | will be used as "low memory", that is, memory which the kernel can | |
1040 | access directly, without having to set up a kernel virtual mapping. | |
1041 | This can be useful in optimizing the layout of kernel virtual | |
1042 | memory. | |
1043 | ||
1044 | Say N here unless you know what you are doing. | |
1045 | ||
1046 | config LOWMEM_SIZE | |
1047 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
1048 | default "0x30000000" | |
1049 | ||
96051465 TP |
1050 | config LOWMEM_CAM_NUM_BOOL |
1051 | bool "Set number of CAMs to use to map low memory" | |
1052 | depends on ADVANCED_OPTIONS && FSL_BOOKE | |
1053 | help | |
1054 | This option allows you to set the maximum number of CAM slots that | |
1055 | will be used to map low memory. There are a limited number of slots | |
1056 | available and even more limited number that will fit in the L1 MMU. | |
1057 | However, using more entries will allow mapping more low memory. This | |
1058 | can be useful in optimizing the layout of kernel virtual memory. | |
1059 | ||
1060 | Say N here unless you know what you are doing. | |
1061 | ||
1062 | config LOWMEM_CAM_NUM | |
9b71dbd3 | 1063 | depends on FSL_BOOKE |
96051465 TP |
1064 | int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL |
1065 | default 3 | |
1066 | ||
0f890c8d | 1067 | config DYNAMIC_MEMSTART |
642e56ff KC |
1068 | bool "Enable page aligned dynamic load address for kernel" |
1069 | depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) | |
0f890c8d SP |
1070 | select NONSTATIC_KERNEL |
1071 | help | |
1072 | This option enables the kernel to be loaded at any page aligned | |
1073 | physical address. The kernel creates a mapping from KERNELBASE to | |
1074 | the address where the kernel is loaded. The page size here implies | |
1075 | the TLB page size of the mapping for kernel on the particular platform. | |
1076 | Please refer to the init code for finding the TLB page size. | |
1077 | ||
1078 | DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE | |
1079 | kernel image, where the only restriction is the page aligned kernel | |
1080 | load address. When this option is enabled, the compile time physical | |
1081 | address CONFIG_PHYSICAL_START is ignored. | |
1082 | ||
9c5f7d39 SP |
1083 | This option is overridden by CONFIG_RELOCATABLE |
1084 | ||
37dd2bad KG |
1085 | config PAGE_OFFSET_BOOL |
1086 | bool "Set custom page offset address" | |
1087 | depends on ADVANCED_OPTIONS | |
1088 | help | |
1089 | This option allows you to set the kernel virtual address at which | |
1090 | the kernel will map low memory. This can be useful in optimizing | |
1091 | the virtual memory layout of the system. | |
1092 | ||
1093 | Say N here unless you know what you are doing. | |
1094 | ||
1095 | config PAGE_OFFSET | |
1096 | hex "Virtual address of memory base" if PAGE_OFFSET_BOOL | |
1097 | default "0xc0000000" | |
1098 | ||
14cf11af PM |
1099 | config KERNEL_START_BOOL |
1100 | bool "Set custom kernel base address" | |
1101 | depends on ADVANCED_OPTIONS | |
1102 | help | |
1103 | This option allows you to set the kernel virtual address at which | |
37dd2bad KG |
1104 | the kernel will be loaded. Normally this should match PAGE_OFFSET |
1105 | however there are times (like kdump) that one might not want them | |
1106 | to be the same. | |
14cf11af PM |
1107 | |
1108 | Say N here unless you know what you are doing. | |
1109 | ||
1110 | config KERNEL_START | |
1111 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
37dd2bad | 1112 | default PAGE_OFFSET if PAGE_OFFSET_BOOL |
0f890c8d | 1113 | default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL |
14cf11af PM |
1114 | default "0xc0000000" |
1115 | ||
37dd2bad KG |
1116 | config PHYSICAL_START_BOOL |
1117 | bool "Set physical address where the kernel is loaded" | |
1118 | depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE | |
1119 | help | |
1120 | This gives the physical address where the kernel is loaded. | |
1121 | ||
1122 | Say N here unless you know what you are doing. | |
1123 | ||
1124 | config PHYSICAL_START | |
1125 | hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL | |
0f890c8d | 1126 | default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL |
37dd2bad KG |
1127 | default "0x00000000" |
1128 | ||
1129 | config PHYSICAL_ALIGN | |
1130 | hex | |
c8f3570b | 1131 | default "0x04000000" if FSL_BOOKE |
37dd2bad KG |
1132 | help |
1133 | This value puts the alignment restrictions on physical address | |
1134 | where kernel is loaded and run from. Kernel is compiled for an | |
1135 | address which meets above alignment restriction. | |
1136 | ||
14cf11af PM |
1137 | config TASK_SIZE_BOOL |
1138 | bool "Set custom user task size" | |
1139 | depends on ADVANCED_OPTIONS | |
1140 | help | |
1141 | This option allows you to set the amount of virtual address space | |
1142 | allocated to user tasks. This can be useful in optimizing the | |
1143 | virtual memory layout of the system. | |
1144 | ||
1145 | Say N here unless you know what you are doing. | |
1146 | ||
1147 | config TASK_SIZE | |
1148 | hex "Size of user task space" if TASK_SIZE_BOOL | |
933ee711 | 1149 | default "0x80000000" if PPC_8xx |
4d9e5510 | 1150 | default "0xc0000000" |
14cf11af | 1151 | |
84532a0f BH |
1152 | config CONSISTENT_SIZE_BOOL |
1153 | bool "Set custom consistent memory pool size" | |
1154 | depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE | |
1155 | help | |
1156 | This option allows you to set the size of the | |
1157 | consistent memory pool. This pool of virtual memory | |
1158 | is used to make consistent memory allocations. | |
1159 | ||
1160 | config CONSISTENT_SIZE | |
1161 | hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL | |
1162 | default "0x00200000" if NOT_COHERENT_CACHE | |
1163 | ||
14cf11af PM |
1164 | config PIN_TLB |
1165 | bool "Pinned Kernel TLBs (860 ONLY)" | |
1166 | depends on ADVANCED_OPTIONS && 8xx | |
62f64b49 CL |
1167 | |
1168 | config PIN_TLB_IMMR | |
1169 | bool "Pinned TLB for IMMR" | |
1170 | depends on PIN_TLB | |
1171 | default y | |
14cf11af PM |
1172 | endmenu |
1173 | ||
cabb5587 | 1174 | if PPC64 |
bdbc29c1 | 1175 | # This value must have zeroes in the bottom 60 bits otherwise lots will break |
37dd2bad KG |
1176 | config PAGE_OFFSET |
1177 | hex | |
1178 | default "0xc000000000000000" | |
cabb5587 SR |
1179 | config KERNEL_START |
1180 | hex | |
eeb2d218 | 1181 | default "0xc000000000000000" |
37dd2bad KG |
1182 | config PHYSICAL_START |
1183 | hex | |
37dd2bad | 1184 | default "0x00000000" |
cabb5587 SR |
1185 | endif |
1186 | ||
a4da0d50 ME |
1187 | config ARCH_RANDOM |
1188 | def_bool n | |
1189 | ||
14cf11af PM |
1190 | source "net/Kconfig" |
1191 | ||
1192 | source "drivers/Kconfig" | |
1193 | ||
1194 | source "fs/Kconfig" | |
1195 | ||
14cf11af PM |
1196 | source "lib/Kconfig" |
1197 | ||
14cf11af PM |
1198 | source "arch/powerpc/Kconfig.debug" |
1199 | ||
1200 | source "security/Kconfig" | |
1201 | ||
14cf11af | 1202 | source "crypto/Kconfig" |
6f668280 | 1203 | |
1088a209 SM |
1204 | config PPC_LIB_RHEAP |
1205 | bool | |
1206 | ||
bbf45ba5 | 1207 | source "arch/powerpc/kvm/Kconfig" |
85baa095 ME |
1208 | |
1209 | source "kernel/livepatch/Kconfig" |