Commit | Line | Data |
---|---|---|
8c2c3df3 CM |
1 | config ARM64 |
2 | def_bool y | |
92980405 | 3 | select ARCH_BINFMT_ELF_RANDOMIZE_PIE |
8c2c3df3 | 4 | select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE |
308c09f1 | 5 | select ARCH_HAS_SG_CHAIN |
1f85008e | 6 | select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST |
c63c8700 | 7 | select ARCH_USE_CMPXCHG_LOCKREF |
4badad35 | 8 | select ARCH_SUPPORTS_ATOMIC_RMW |
9170100e | 9 | select ARCH_WANT_OPTIONAL_GPIOLIB |
6212a512 | 10 | select ARCH_WANT_COMPAT_IPC_PARSE_VERSION |
b6f35981 | 11 | select ARCH_WANT_FRAME_POINTERS |
25c92a37 | 12 | select ARM_AMBA |
1aee5d7a | 13 | select ARM_ARCH_TIMER |
c4188edc | 14 | select ARM_GIC |
875cbf3e | 15 | select AUDIT_ARCH_COMPAT_GENERIC |
021f6537 | 16 | select ARM_GIC_V3 |
adace895 | 17 | select BUILDTIME_EXTABLE_SORT |
db2789b5 | 18 | select CLONE_BACKWARDS |
7ca2ef33 | 19 | select COMMON_CLK |
166936ba | 20 | select CPU_PM if (SUSPEND || CPU_IDLE) |
7bc13fd3 | 21 | select DCACHE_WORD_ACCESS |
d4932f9e | 22 | select GENERIC_ALLOCATOR |
8c2c3df3 | 23 | select GENERIC_CLOCKEVENTS |
1f85008e | 24 | select GENERIC_CLOCKEVENTS_BROADCAST if SMP |
3be1a5c4 | 25 | select GENERIC_CPU_AUTOPROBE |
bf4b558e | 26 | select GENERIC_EARLY_IOREMAP |
8c2c3df3 CM |
27 | select GENERIC_IOMAP |
28 | select GENERIC_IRQ_PROBE | |
29 | select GENERIC_IRQ_SHOW | |
65cd4f6c | 30 | select GENERIC_SCHED_CLOCK |
8c2c3df3 | 31 | select GENERIC_SMP_IDLE_THREAD |
12a0ef7b WD |
32 | select GENERIC_STRNCPY_FROM_USER |
33 | select GENERIC_STRNLEN_USER | |
8c2c3df3 | 34 | select GENERIC_TIME_VSYSCALL |
a1ddc74a | 35 | select HANDLE_DOMAIN_IRQ |
8c2c3df3 | 36 | select HARDIRQS_SW_RESEND |
5284e1b4 | 37 | select HAVE_ALIGNED_STRUCT_PAGE if SLUB |
875cbf3e | 38 | select HAVE_ARCH_AUDITSYSCALL |
9732cafd | 39 | select HAVE_ARCH_JUMP_LABEL |
9529247d | 40 | select HAVE_ARCH_KGDB |
8c2c3df3 | 41 | select HAVE_ARCH_TRACEHOOK |
e54bcde3 | 42 | select HAVE_BPF_JIT |
af64d2aa | 43 | select HAVE_C_RECORDMCOUNT |
c0c264ae | 44 | select HAVE_CC_STACKPROTECTOR |
5284e1b4 | 45 | select HAVE_CMPXCHG_DOUBLE |
9b2a60c4 | 46 | select HAVE_DEBUG_BUGVERBOSE |
b69ec42b | 47 | select HAVE_DEBUG_KMEMLEAK |
8c2c3df3 CM |
48 | select HAVE_DMA_API_DEBUG |
49 | select HAVE_DMA_ATTRS | |
6ac2104d | 50 | select HAVE_DMA_CONTIGUOUS |
bd7d38db | 51 | select HAVE_DYNAMIC_FTRACE |
50afc33a | 52 | select HAVE_EFFICIENT_UNALIGNED_ACCESS |
af64d2aa | 53 | select HAVE_FTRACE_MCOUNT_RECORD |
819e50e2 AT |
54 | select HAVE_FUNCTION_TRACER |
55 | select HAVE_FUNCTION_GRAPH_TRACER | |
8c2c3df3 | 56 | select HAVE_GENERIC_DMA_COHERENT |
8c2c3df3 | 57 | select HAVE_HW_BREAKPOINT if PERF_EVENTS |
8c2c3df3 | 58 | select HAVE_MEMBLOCK |
55834a77 | 59 | select HAVE_PATA_PLATFORM |
8c2c3df3 | 60 | select HAVE_PERF_EVENTS |
2ee0d7fd JP |
61 | select HAVE_PERF_REGS |
62 | select HAVE_PERF_USER_STACK_DUMP | |
5e5f6dc1 | 63 | select HAVE_RCU_TABLE_FREE |
055b1212 | 64 | select HAVE_SYSCALL_TRACEPOINTS |
8c2c3df3 | 65 | select IRQ_DOMAIN |
fea2acaa | 66 | select MODULES_USE_ELF_RELA |
8c2c3df3 CM |
67 | select NO_BOOTMEM |
68 | select OF | |
69 | select OF_EARLY_FLATTREE | |
9bf14b7c | 70 | select OF_RESERVED_MEM |
8c2c3df3 | 71 | select PERF_USE_VMALLOC |
aa1e8ec1 CM |
72 | select POWER_RESET |
73 | select POWER_SUPPLY | |
8c2c3df3 CM |
74 | select RTC_LIB |
75 | select SPARSE_IRQ | |
7ac57a89 | 76 | select SYSCTL_EXCEPTION_TRACE |
6c81fe79 | 77 | select HAVE_CONTEXT_TRACKING |
8c2c3df3 CM |
78 | help |
79 | ARM 64-bit (AArch64) Linux support. | |
80 | ||
81 | config 64BIT | |
82 | def_bool y | |
83 | ||
84 | config ARCH_PHYS_ADDR_T_64BIT | |
85 | def_bool y | |
86 | ||
87 | config MMU | |
88 | def_bool y | |
89 | ||
ce816fa8 | 90 | config NO_IOPORT_MAP |
d1e6dc91 | 91 | def_bool y if !PCI |
8c2c3df3 CM |
92 | |
93 | config STACKTRACE_SUPPORT | |
94 | def_bool y | |
95 | ||
96 | config LOCKDEP_SUPPORT | |
97 | def_bool y | |
98 | ||
99 | config TRACE_IRQFLAGS_SUPPORT | |
100 | def_bool y | |
101 | ||
c209f799 | 102 | config RWSEM_XCHGADD_ALGORITHM |
8c2c3df3 CM |
103 | def_bool y |
104 | ||
105 | config GENERIC_HWEIGHT | |
106 | def_bool y | |
107 | ||
108 | config GENERIC_CSUM | |
109 | def_bool y | |
110 | ||
111 | config GENERIC_CALIBRATE_DELAY | |
112 | def_bool y | |
113 | ||
19e7640d | 114 | config ZONE_DMA |
8c2c3df3 CM |
115 | def_bool y |
116 | ||
29e56940 SC |
117 | config HAVE_GENERIC_RCU_GUP |
118 | def_bool y | |
119 | ||
8c2c3df3 CM |
120 | config ARCH_DMA_ADDR_T_64BIT |
121 | def_bool y | |
122 | ||
123 | config NEED_DMA_MAP_STATE | |
124 | def_bool y | |
125 | ||
126 | config NEED_SG_DMA_LENGTH | |
127 | def_bool y | |
128 | ||
129 | config SWIOTLB | |
130 | def_bool y | |
131 | ||
132 | config IOMMU_HELPER | |
133 | def_bool SWIOTLB | |
134 | ||
4cfb3613 AB |
135 | config KERNEL_MODE_NEON |
136 | def_bool y | |
137 | ||
92cc15fc RH |
138 | config FIX_EARLYCON_MEM |
139 | def_bool y | |
140 | ||
8c2c3df3 CM |
141 | source "init/Kconfig" |
142 | ||
143 | source "kernel/Kconfig.freezer" | |
144 | ||
1ae90e79 CM |
145 | menu "Platform selection" |
146 | ||
28f7420d RMC |
147 | config ARCH_THUNDER |
148 | bool "Cavium Inc. Thunder SoC Family" | |
149 | help | |
150 | This enables support for Cavium's Thunder Family of SoCs. | |
151 | ||
1ae90e79 CM |
152 | config ARCH_VEXPRESS |
153 | bool "ARMv8 software model (Versatile Express)" | |
154 | select ARCH_REQUIRE_GPIOLIB | |
155 | select COMMON_CLK_VERSATILE | |
aa1e8ec1 | 156 | select POWER_RESET_VEXPRESS |
1ae90e79 CM |
157 | select VEXPRESS_CONFIG |
158 | help | |
159 | This enables support for the ARMv8 software model (Versatile | |
160 | Express). | |
8c2c3df3 | 161 | |
15942853 VK |
162 | config ARCH_XGENE |
163 | bool "AppliedMicro X-Gene SOC Family" | |
164 | help | |
165 | This enables support for AppliedMicro X-Gene SOC Family | |
166 | ||
8c2c3df3 CM |
167 | endmenu |
168 | ||
169 | menu "Bus support" | |
170 | ||
171 | config ARM_AMBA | |
172 | bool | |
173 | ||
d1e6dc91 LD |
174 | config PCI |
175 | bool "PCI support" | |
176 | help | |
177 | This feature enables support for PCI bus system. If you say Y | |
178 | here, the kernel will include drivers and infrastructure code | |
179 | to support PCI bus devices. | |
180 | ||
181 | config PCI_DOMAINS | |
182 | def_bool PCI | |
183 | ||
184 | config PCI_DOMAINS_GENERIC | |
185 | def_bool PCI | |
186 | ||
187 | config PCI_SYSCALL | |
188 | def_bool PCI | |
189 | ||
190 | source "drivers/pci/Kconfig" | |
191 | source "drivers/pci/pcie/Kconfig" | |
192 | source "drivers/pci/hotplug/Kconfig" | |
193 | ||
8c2c3df3 CM |
194 | endmenu |
195 | ||
196 | menu "Kernel Features" | |
197 | ||
e41ceed0 JL |
198 | choice |
199 | prompt "Page size" | |
200 | default ARM64_4K_PAGES | |
201 | help | |
202 | Page size (translation granule) configuration. | |
203 | ||
204 | config ARM64_4K_PAGES | |
205 | bool "4KB" | |
206 | help | |
207 | This feature enables 4KB pages support. | |
208 | ||
8c2c3df3 | 209 | config ARM64_64K_PAGES |
e41ceed0 | 210 | bool "64KB" |
8c2c3df3 CM |
211 | help |
212 | This feature enables 64KB pages support (4KB by default) | |
213 | allowing only two levels of page tables and faster TLB | |
214 | look-up. AArch32 emulation is not available when this feature | |
215 | is enabled. | |
216 | ||
e41ceed0 JL |
217 | endchoice |
218 | ||
219 | choice | |
220 | prompt "Virtual address space size" | |
221 | default ARM64_VA_BITS_39 if ARM64_4K_PAGES | |
222 | default ARM64_VA_BITS_42 if ARM64_64K_PAGES | |
223 | help | |
224 | Allows choosing one of multiple possible virtual address | |
225 | space sizes. The level of translation table is determined by | |
226 | a combination of page size and virtual address space size. | |
227 | ||
228 | config ARM64_VA_BITS_39 | |
229 | bool "39-bit" | |
230 | depends on ARM64_4K_PAGES | |
231 | ||
232 | config ARM64_VA_BITS_42 | |
233 | bool "42-bit" | |
234 | depends on ARM64_64K_PAGES | |
235 | ||
c79b954b JL |
236 | config ARM64_VA_BITS_48 |
237 | bool "48-bit" | |
04f905a9 | 238 | depends on !ARM_SMMU |
c79b954b | 239 | |
e41ceed0 JL |
240 | endchoice |
241 | ||
242 | config ARM64_VA_BITS | |
243 | int | |
244 | default 39 if ARM64_VA_BITS_39 | |
245 | default 42 if ARM64_VA_BITS_42 | |
c79b954b | 246 | default 48 if ARM64_VA_BITS_48 |
e41ceed0 | 247 | |
abe669d7 CM |
248 | config ARM64_PGTABLE_LEVELS |
249 | int | |
250 | default 2 if ARM64_64K_PAGES && ARM64_VA_BITS_42 | |
383c2799 | 251 | default 3 if ARM64_64K_PAGES && ARM64_VA_BITS_48 |
abe669d7 CM |
252 | default 3 if ARM64_4K_PAGES && ARM64_VA_BITS_39 |
253 | default 4 if ARM64_4K_PAGES && ARM64_VA_BITS_48 | |
c79b954b | 254 | |
a872013d WD |
255 | config CPU_BIG_ENDIAN |
256 | bool "Build big-endian kernel" | |
257 | help | |
258 | Say Y if you plan on running a kernel in big-endian mode. | |
259 | ||
8c2c3df3 CM |
260 | config SMP |
261 | bool "Symmetric Multi-Processing" | |
8c2c3df3 CM |
262 | help |
263 | This enables support for systems with more than one CPU. If | |
264 | you say N here, the kernel will run on single and | |
265 | multiprocessor machines, but will use only one CPU of a | |
266 | multiprocessor machine. If you say Y here, the kernel will run | |
267 | on many, but not all, single processor machines. On a single | |
268 | processor machine, the kernel will run faster if you say N | |
269 | here. | |
270 | ||
271 | If you don't know what to do here, say N. | |
272 | ||
f6e763b9 MB |
273 | config SCHED_MC |
274 | bool "Multi-core scheduler support" | |
275 | depends on SMP | |
276 | help | |
277 | Multi-core scheduler support improves the CPU scheduler's decision | |
278 | making when dealing with multi-core CPU chips at a cost of slightly | |
279 | increased overhead in some places. If unsure say N here. | |
280 | ||
281 | config SCHED_SMT | |
282 | bool "SMT scheduler support" | |
283 | depends on SMP | |
284 | help | |
285 | Improves the CPU scheduler's decision making when dealing with | |
286 | MultiThreading at a cost of slightly increased overhead in some | |
287 | places. If unsure say N here. | |
288 | ||
8c2c3df3 | 289 | config NR_CPUS |
e3672649 RR |
290 | int "Maximum number of CPUs (2-64)" |
291 | range 2 64 | |
8c2c3df3 | 292 | depends on SMP |
15942853 | 293 | # These have to remain sorted largest to smallest |
e3672649 | 294 | default "64" |
8c2c3df3 | 295 | |
9327e2c6 MR |
296 | config HOTPLUG_CPU |
297 | bool "Support for hot-pluggable CPUs" | |
298 | depends on SMP | |
299 | help | |
300 | Say Y here to experiment with turning CPUs off and on. CPUs | |
301 | can be controlled through /sys/devices/system/cpu. | |
302 | ||
8c2c3df3 CM |
303 | source kernel/Kconfig.preempt |
304 | ||
305 | config HZ | |
306 | int | |
307 | default 100 | |
308 | ||
309 | config ARCH_HAS_HOLES_MEMORYMODEL | |
310 | def_bool y if SPARSEMEM | |
311 | ||
312 | config ARCH_SPARSEMEM_ENABLE | |
313 | def_bool y | |
314 | select SPARSEMEM_VMEMMAP_ENABLE | |
315 | ||
316 | config ARCH_SPARSEMEM_DEFAULT | |
317 | def_bool ARCH_SPARSEMEM_ENABLE | |
318 | ||
319 | config ARCH_SELECT_MEMORY_MODEL | |
320 | def_bool ARCH_SPARSEMEM_ENABLE | |
321 | ||
322 | config HAVE_ARCH_PFN_VALID | |
323 | def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM | |
324 | ||
325 | config HW_PERF_EVENTS | |
326 | bool "Enable hardware performance counter support for perf events" | |
327 | depends on PERF_EVENTS | |
328 | default y | |
329 | help | |
330 | Enable hardware performance counter support for perf events. If | |
331 | disabled, perf events will use software events only. | |
332 | ||
084bd298 SC |
333 | config SYS_SUPPORTS_HUGETLBFS |
334 | def_bool y | |
335 | ||
336 | config ARCH_WANT_GENERAL_HUGETLB | |
337 | def_bool y | |
338 | ||
339 | config ARCH_WANT_HUGE_PMD_SHARE | |
340 | def_bool y if !ARM64_64K_PAGES | |
341 | ||
af074848 SC |
342 | config HAVE_ARCH_TRANSPARENT_HUGEPAGE |
343 | def_bool y | |
344 | ||
a41dc0e8 CM |
345 | config ARCH_HAS_CACHE_LINE_SIZE |
346 | def_bool y | |
347 | ||
8c2c3df3 CM |
348 | source "mm/Kconfig" |
349 | ||
aa42aa13 SS |
350 | config XEN_DOM0 |
351 | def_bool y | |
352 | depends on XEN | |
353 | ||
354 | config XEN | |
c2ba1f7d | 355 | bool "Xen guest support on ARM64" |
aa42aa13 | 356 | depends on ARM64 && OF |
83862ccf | 357 | select SWIOTLB_XEN |
aa42aa13 SS |
358 | help |
359 | Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64. | |
360 | ||
d03bb145 SC |
361 | config FORCE_MAX_ZONEORDER |
362 | int | |
363 | default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE) | |
364 | default "11" | |
365 | ||
1b907f46 WD |
366 | menuconfig ARMV8_DEPRECATED |
367 | bool "Emulate deprecated/obsolete ARMv8 instructions" | |
368 | depends on COMPAT | |
369 | help | |
370 | Legacy software support may require certain instructions | |
371 | that have been deprecated or obsoleted in the architecture. | |
372 | ||
373 | Enable this config to enable selective emulation of these | |
374 | features. | |
375 | ||
376 | If unsure, say Y | |
377 | ||
378 | if ARMV8_DEPRECATED | |
379 | ||
380 | config SWP_EMULATION | |
381 | bool "Emulate SWP/SWPB instructions" | |
382 | help | |
383 | ARMv8 obsoletes the use of A32 SWP/SWPB instructions such that | |
384 | they are always undefined. Say Y here to enable software | |
385 | emulation of these instructions for userspace using LDXR/STXR. | |
386 | ||
387 | In some older versions of glibc [<=2.8] SWP is used during futex | |
388 | trylock() operations with the assumption that the code will not | |
389 | be preempted. This invalid assumption may be more likely to fail | |
390 | with SWP emulation enabled, leading to deadlock of the user | |
391 | application. | |
392 | ||
393 | NOTE: when accessing uncached shared regions, LDXR/STXR rely | |
394 | on an external transaction monitoring block called a global | |
395 | monitor to maintain update atomicity. If your system does not | |
396 | implement a global monitor, this option can cause programs that | |
397 | perform SWP operations to uncached memory to deadlock. | |
398 | ||
399 | If unsure, say Y | |
400 | ||
401 | config CP15_BARRIER_EMULATION | |
402 | bool "Emulate CP15 Barrier instructions" | |
403 | help | |
404 | The CP15 barrier instructions - CP15ISB, CP15DSB, and | |
405 | CP15DMB - are deprecated in ARMv8 (and ARMv7). It is | |
406 | strongly recommended to use the ISB, DSB, and DMB | |
407 | instructions instead. | |
408 | ||
409 | Say Y here to enable software emulation of these | |
410 | instructions for AArch32 userspace code. When this option is | |
411 | enabled, CP15 barrier usage is traced which can help | |
412 | identify software that needs updating. | |
413 | ||
414 | If unsure, say Y | |
415 | ||
416 | endif | |
417 | ||
8c2c3df3 CM |
418 | endmenu |
419 | ||
420 | menu "Boot options" | |
421 | ||
422 | config CMDLINE | |
423 | string "Default kernel command string" | |
424 | default "" | |
425 | help | |
426 | Provide a set of default command-line options at build time by | |
427 | entering them here. As a minimum, you should specify the the | |
428 | root device (e.g. root=/dev/nfs). | |
429 | ||
430 | config CMDLINE_FORCE | |
431 | bool "Always use the default kernel command string" | |
432 | help | |
433 | Always use the default kernel command string, even if the boot | |
434 | loader passes other arguments to the kernel. | |
435 | This is useful if you cannot or don't want to change the | |
436 | command-line options your boot loader passes to the kernel. | |
437 | ||
f4f75ad5 AB |
438 | config EFI_STUB |
439 | bool | |
440 | ||
f84d0275 MS |
441 | config EFI |
442 | bool "UEFI runtime support" | |
443 | depends on OF && !CPU_BIG_ENDIAN | |
444 | select LIBFDT | |
445 | select UCS2_STRING | |
446 | select EFI_PARAMS_FROM_FDT | |
e15dd494 | 447 | select EFI_RUNTIME_WRAPPERS |
f4f75ad5 AB |
448 | select EFI_STUB |
449 | select EFI_ARMSTUB | |
f84d0275 MS |
450 | default y |
451 | help | |
452 | This option provides support for runtime services provided | |
453 | by UEFI firmware (such as non-volatile variables, realtime | |
3c7f2550 MS |
454 | clock, and platform reset). A UEFI stub is also provided to |
455 | allow the kernel to be booted as an EFI application. This | |
456 | is only useful on systems that have UEFI firmware. | |
f84d0275 | 457 | |
d1ae8c00 YL |
458 | config DMI |
459 | bool "Enable support for SMBIOS (DMI) tables" | |
460 | depends on EFI | |
461 | default y | |
462 | help | |
463 | This enables SMBIOS/DMI feature for systems. | |
464 | ||
465 | This option is only useful on systems that have UEFI firmware. | |
466 | However, even with this option, the resultant kernel should | |
467 | continue to boot on existing non-UEFI platforms. | |
468 | ||
8c2c3df3 CM |
469 | endmenu |
470 | ||
471 | menu "Userspace binary formats" | |
472 | ||
473 | source "fs/Kconfig.binfmt" | |
474 | ||
475 | config COMPAT | |
476 | bool "Kernel support for 32-bit EL0" | |
477 | depends on !ARM64_64K_PAGES | |
478 | select COMPAT_BINFMT_ELF | |
af1839eb | 479 | select HAVE_UID16 |
84b9e9b4 | 480 | select OLD_SIGSUSPEND3 |
51682036 | 481 | select COMPAT_OLD_SIGACTION |
8c2c3df3 CM |
482 | help |
483 | This option enables support for a 32-bit EL0 running under a 64-bit | |
484 | kernel at EL1. AArch32-specific components such as system calls, | |
485 | the user helper functions, VFP support and the ptrace interface are | |
486 | handled appropriately by the kernel. | |
487 | ||
488 | If you want to execute 32-bit userspace applications, say Y. | |
489 | ||
490 | config SYSVIPC_COMPAT | |
491 | def_bool y | |
492 | depends on COMPAT && SYSVIPC | |
493 | ||
494 | endmenu | |
495 | ||
166936ba LP |
496 | menu "Power management options" |
497 | ||
498 | source "kernel/power/Kconfig" | |
499 | ||
500 | config ARCH_SUSPEND_POSSIBLE | |
501 | def_bool y | |
502 | ||
503 | config ARM64_CPU_SUSPEND | |
504 | def_bool PM_SLEEP | |
505 | ||
506 | endmenu | |
507 | ||
1307220d LP |
508 | menu "CPU Power Management" |
509 | ||
510 | source "drivers/cpuidle/Kconfig" | |
511 | ||
52e7e816 RH |
512 | source "drivers/cpufreq/Kconfig" |
513 | ||
514 | endmenu | |
515 | ||
8c2c3df3 CM |
516 | source "net/Kconfig" |
517 | ||
518 | source "drivers/Kconfig" | |
519 | ||
f84d0275 MS |
520 | source "drivers/firmware/Kconfig" |
521 | ||
8c2c3df3 CM |
522 | source "fs/Kconfig" |
523 | ||
c3eb5b14 MZ |
524 | source "arch/arm64/kvm/Kconfig" |
525 | ||
8c2c3df3 CM |
526 | source "arch/arm64/Kconfig.debug" |
527 | ||
528 | source "security/Kconfig" | |
529 | ||
530 | source "crypto/Kconfig" | |
2c98833a AB |
531 | if CRYPTO |
532 | source "arch/arm64/crypto/Kconfig" | |
533 | endif | |
8c2c3df3 CM |
534 | |
535 | source "lib/Kconfig" |