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Commit | Line | Data |
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8c2c3df3 CM |
1 | config ARM64 |
2 | def_bool y | |
3 | select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE | |
308c09f1 | 4 | select ARCH_HAS_SG_CHAIN |
1f85008e | 5 | select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST |
c63c8700 | 6 | select ARCH_USE_CMPXCHG_LOCKREF |
4badad35 | 7 | select ARCH_SUPPORTS_ATOMIC_RMW |
9170100e | 8 | select ARCH_WANT_OPTIONAL_GPIOLIB |
6212a512 | 9 | select ARCH_WANT_COMPAT_IPC_PARSE_VERSION |
b6f35981 | 10 | select ARCH_WANT_FRAME_POINTERS |
25c92a37 | 11 | select ARM_AMBA |
1aee5d7a | 12 | select ARM_ARCH_TIMER |
c4188edc | 13 | select ARM_GIC |
875cbf3e | 14 | select AUDIT_ARCH_COMPAT_GENERIC |
021f6537 | 15 | select ARM_GIC_V3 |
adace895 | 16 | select BUILDTIME_EXTABLE_SORT |
db2789b5 | 17 | select CLONE_BACKWARDS |
7ca2ef33 | 18 | select COMMON_CLK |
166936ba | 19 | select CPU_PM if (SUSPEND || CPU_IDLE) |
7bc13fd3 | 20 | select DCACHE_WORD_ACCESS |
8c2c3df3 | 21 | select GENERIC_CLOCKEVENTS |
1f85008e | 22 | select GENERIC_CLOCKEVENTS_BROADCAST if SMP |
3be1a5c4 | 23 | select GENERIC_CPU_AUTOPROBE |
bf4b558e | 24 | select GENERIC_EARLY_IOREMAP |
8c2c3df3 CM |
25 | select GENERIC_IOMAP |
26 | select GENERIC_IRQ_PROBE | |
27 | select GENERIC_IRQ_SHOW | |
65cd4f6c | 28 | select GENERIC_SCHED_CLOCK |
8c2c3df3 | 29 | select GENERIC_SMP_IDLE_THREAD |
12a0ef7b WD |
30 | select GENERIC_STRNCPY_FROM_USER |
31 | select GENERIC_STRNLEN_USER | |
8c2c3df3 CM |
32 | select GENERIC_TIME_VSYSCALL |
33 | select HARDIRQS_SW_RESEND | |
875cbf3e | 34 | select HAVE_ARCH_AUDITSYSCALL |
9732cafd | 35 | select HAVE_ARCH_JUMP_LABEL |
9529247d | 36 | select HAVE_ARCH_KGDB |
8c2c3df3 | 37 | select HAVE_ARCH_TRACEHOOK |
af64d2aa | 38 | select HAVE_C_RECORDMCOUNT |
c0c264ae | 39 | select HAVE_CC_STACKPROTECTOR |
9b2a60c4 | 40 | select HAVE_DEBUG_BUGVERBOSE |
b69ec42b | 41 | select HAVE_DEBUG_KMEMLEAK |
8c2c3df3 CM |
42 | select HAVE_DMA_API_DEBUG |
43 | select HAVE_DMA_ATTRS | |
6ac2104d | 44 | select HAVE_DMA_CONTIGUOUS |
bd7d38db | 45 | select HAVE_DYNAMIC_FTRACE |
50afc33a | 46 | select HAVE_EFFICIENT_UNALIGNED_ACCESS |
af64d2aa | 47 | select HAVE_FTRACE_MCOUNT_RECORD |
819e50e2 AT |
48 | select HAVE_FUNCTION_TRACER |
49 | select HAVE_FUNCTION_GRAPH_TRACER | |
8c2c3df3 | 50 | select HAVE_GENERIC_DMA_COHERENT |
8c2c3df3 | 51 | select HAVE_HW_BREAKPOINT if PERF_EVENTS |
8c2c3df3 | 52 | select HAVE_MEMBLOCK |
55834a77 | 53 | select HAVE_PATA_PLATFORM |
8c2c3df3 | 54 | select HAVE_PERF_EVENTS |
2ee0d7fd JP |
55 | select HAVE_PERF_REGS |
56 | select HAVE_PERF_USER_STACK_DUMP | |
055b1212 | 57 | select HAVE_SYSCALL_TRACEPOINTS |
8c2c3df3 | 58 | select IRQ_DOMAIN |
fea2acaa | 59 | select MODULES_USE_ELF_RELA |
8c2c3df3 CM |
60 | select NO_BOOTMEM |
61 | select OF | |
62 | select OF_EARLY_FLATTREE | |
9bf14b7c | 63 | select OF_RESERVED_MEM |
8c2c3df3 | 64 | select PERF_USE_VMALLOC |
aa1e8ec1 CM |
65 | select POWER_RESET |
66 | select POWER_SUPPLY | |
8c2c3df3 CM |
67 | select RTC_LIB |
68 | select SPARSE_IRQ | |
7ac57a89 | 69 | select SYSCTL_EXCEPTION_TRACE |
6c81fe79 | 70 | select HAVE_CONTEXT_TRACKING |
8c2c3df3 CM |
71 | help |
72 | ARM 64-bit (AArch64) Linux support. | |
73 | ||
74 | config 64BIT | |
75 | def_bool y | |
76 | ||
77 | config ARCH_PHYS_ADDR_T_64BIT | |
78 | def_bool y | |
79 | ||
80 | config MMU | |
81 | def_bool y | |
82 | ||
ce816fa8 | 83 | config NO_IOPORT_MAP |
8c2c3df3 CM |
84 | def_bool y |
85 | ||
86 | config STACKTRACE_SUPPORT | |
87 | def_bool y | |
88 | ||
89 | config LOCKDEP_SUPPORT | |
90 | def_bool y | |
91 | ||
92 | config TRACE_IRQFLAGS_SUPPORT | |
93 | def_bool y | |
94 | ||
c209f799 | 95 | config RWSEM_XCHGADD_ALGORITHM |
8c2c3df3 CM |
96 | def_bool y |
97 | ||
98 | config GENERIC_HWEIGHT | |
99 | def_bool y | |
100 | ||
101 | config GENERIC_CSUM | |
102 | def_bool y | |
103 | ||
104 | config GENERIC_CALIBRATE_DELAY | |
105 | def_bool y | |
106 | ||
19e7640d | 107 | config ZONE_DMA |
8c2c3df3 CM |
108 | def_bool y |
109 | ||
110 | config ARCH_DMA_ADDR_T_64BIT | |
111 | def_bool y | |
112 | ||
113 | config NEED_DMA_MAP_STATE | |
114 | def_bool y | |
115 | ||
116 | config NEED_SG_DMA_LENGTH | |
117 | def_bool y | |
118 | ||
119 | config SWIOTLB | |
120 | def_bool y | |
121 | ||
122 | config IOMMU_HELPER | |
123 | def_bool SWIOTLB | |
124 | ||
4cfb3613 AB |
125 | config KERNEL_MODE_NEON |
126 | def_bool y | |
127 | ||
92cc15fc RH |
128 | config FIX_EARLYCON_MEM |
129 | def_bool y | |
130 | ||
8c2c3df3 CM |
131 | source "init/Kconfig" |
132 | ||
133 | source "kernel/Kconfig.freezer" | |
134 | ||
1ae90e79 CM |
135 | menu "Platform selection" |
136 | ||
137 | config ARCH_VEXPRESS | |
138 | bool "ARMv8 software model (Versatile Express)" | |
139 | select ARCH_REQUIRE_GPIOLIB | |
140 | select COMMON_CLK_VERSATILE | |
aa1e8ec1 | 141 | select POWER_RESET_VEXPRESS |
1ae90e79 CM |
142 | select VEXPRESS_CONFIG |
143 | help | |
144 | This enables support for the ARMv8 software model (Versatile | |
145 | Express). | |
8c2c3df3 | 146 | |
15942853 VK |
147 | config ARCH_XGENE |
148 | bool "AppliedMicro X-Gene SOC Family" | |
149 | help | |
150 | This enables support for AppliedMicro X-Gene SOC Family | |
151 | ||
8c2c3df3 CM |
152 | endmenu |
153 | ||
154 | menu "Bus support" | |
155 | ||
156 | config ARM_AMBA | |
157 | bool | |
158 | ||
159 | endmenu | |
160 | ||
161 | menu "Kernel Features" | |
162 | ||
e41ceed0 JL |
163 | choice |
164 | prompt "Page size" | |
165 | default ARM64_4K_PAGES | |
166 | help | |
167 | Page size (translation granule) configuration. | |
168 | ||
169 | config ARM64_4K_PAGES | |
170 | bool "4KB" | |
171 | help | |
172 | This feature enables 4KB pages support. | |
173 | ||
8c2c3df3 | 174 | config ARM64_64K_PAGES |
e41ceed0 | 175 | bool "64KB" |
8c2c3df3 CM |
176 | help |
177 | This feature enables 64KB pages support (4KB by default) | |
178 | allowing only two levels of page tables and faster TLB | |
179 | look-up. AArch32 emulation is not available when this feature | |
180 | is enabled. | |
181 | ||
e41ceed0 JL |
182 | endchoice |
183 | ||
184 | choice | |
185 | prompt "Virtual address space size" | |
186 | default ARM64_VA_BITS_39 if ARM64_4K_PAGES | |
187 | default ARM64_VA_BITS_42 if ARM64_64K_PAGES | |
188 | help | |
189 | Allows choosing one of multiple possible virtual address | |
190 | space sizes. The level of translation table is determined by | |
191 | a combination of page size and virtual address space size. | |
192 | ||
193 | config ARM64_VA_BITS_39 | |
194 | bool "39-bit" | |
195 | depends on ARM64_4K_PAGES | |
196 | ||
197 | config ARM64_VA_BITS_42 | |
198 | bool "42-bit" | |
199 | depends on ARM64_64K_PAGES | |
200 | ||
c79b954b JL |
201 | config ARM64_VA_BITS_48 |
202 | bool "48-bit" | |
203 | depends on BROKEN | |
204 | ||
e41ceed0 JL |
205 | endchoice |
206 | ||
207 | config ARM64_VA_BITS | |
208 | int | |
209 | default 39 if ARM64_VA_BITS_39 | |
210 | default 42 if ARM64_VA_BITS_42 | |
c79b954b | 211 | default 48 if ARM64_VA_BITS_48 |
e41ceed0 | 212 | |
abe669d7 CM |
213 | config ARM64_PGTABLE_LEVELS |
214 | int | |
215 | default 2 if ARM64_64K_PAGES && ARM64_VA_BITS_42 | |
383c2799 | 216 | default 3 if ARM64_64K_PAGES && ARM64_VA_BITS_48 |
abe669d7 CM |
217 | default 3 if ARM64_4K_PAGES && ARM64_VA_BITS_39 |
218 | default 4 if ARM64_4K_PAGES && ARM64_VA_BITS_48 | |
c79b954b | 219 | |
a872013d WD |
220 | config CPU_BIG_ENDIAN |
221 | bool "Build big-endian kernel" | |
222 | help | |
223 | Say Y if you plan on running a kernel in big-endian mode. | |
224 | ||
8c2c3df3 CM |
225 | config SMP |
226 | bool "Symmetric Multi-Processing" | |
8c2c3df3 CM |
227 | help |
228 | This enables support for systems with more than one CPU. If | |
229 | you say N here, the kernel will run on single and | |
230 | multiprocessor machines, but will use only one CPU of a | |
231 | multiprocessor machine. If you say Y here, the kernel will run | |
232 | on many, but not all, single processor machines. On a single | |
233 | processor machine, the kernel will run faster if you say N | |
234 | here. | |
235 | ||
236 | If you don't know what to do here, say N. | |
237 | ||
f6e763b9 MB |
238 | config SCHED_MC |
239 | bool "Multi-core scheduler support" | |
240 | depends on SMP | |
241 | help | |
242 | Multi-core scheduler support improves the CPU scheduler's decision | |
243 | making when dealing with multi-core CPU chips at a cost of slightly | |
244 | increased overhead in some places. If unsure say N here. | |
245 | ||
246 | config SCHED_SMT | |
247 | bool "SMT scheduler support" | |
248 | depends on SMP | |
249 | help | |
250 | Improves the CPU scheduler's decision making when dealing with | |
251 | MultiThreading at a cost of slightly increased overhead in some | |
252 | places. If unsure say N here. | |
253 | ||
8c2c3df3 CM |
254 | config NR_CPUS |
255 | int "Maximum number of CPUs (2-32)" | |
256 | range 2 32 | |
257 | depends on SMP | |
15942853 | 258 | # These have to remain sorted largest to smallest |
62aceb8f | 259 | default "8" |
8c2c3df3 | 260 | |
9327e2c6 MR |
261 | config HOTPLUG_CPU |
262 | bool "Support for hot-pluggable CPUs" | |
263 | depends on SMP | |
264 | help | |
265 | Say Y here to experiment with turning CPUs off and on. CPUs | |
266 | can be controlled through /sys/devices/system/cpu. | |
267 | ||
8c2c3df3 CM |
268 | source kernel/Kconfig.preempt |
269 | ||
270 | config HZ | |
271 | int | |
272 | default 100 | |
273 | ||
274 | config ARCH_HAS_HOLES_MEMORYMODEL | |
275 | def_bool y if SPARSEMEM | |
276 | ||
277 | config ARCH_SPARSEMEM_ENABLE | |
278 | def_bool y | |
279 | select SPARSEMEM_VMEMMAP_ENABLE | |
280 | ||
281 | config ARCH_SPARSEMEM_DEFAULT | |
282 | def_bool ARCH_SPARSEMEM_ENABLE | |
283 | ||
284 | config ARCH_SELECT_MEMORY_MODEL | |
285 | def_bool ARCH_SPARSEMEM_ENABLE | |
286 | ||
287 | config HAVE_ARCH_PFN_VALID | |
288 | def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM | |
289 | ||
290 | config HW_PERF_EVENTS | |
291 | bool "Enable hardware performance counter support for perf events" | |
292 | depends on PERF_EVENTS | |
293 | default y | |
294 | help | |
295 | Enable hardware performance counter support for perf events. If | |
296 | disabled, perf events will use software events only. | |
297 | ||
084bd298 SC |
298 | config SYS_SUPPORTS_HUGETLBFS |
299 | def_bool y | |
300 | ||
301 | config ARCH_WANT_GENERAL_HUGETLB | |
302 | def_bool y | |
303 | ||
304 | config ARCH_WANT_HUGE_PMD_SHARE | |
305 | def_bool y if !ARM64_64K_PAGES | |
306 | ||
af074848 SC |
307 | config HAVE_ARCH_TRANSPARENT_HUGEPAGE |
308 | def_bool y | |
309 | ||
a41dc0e8 CM |
310 | config ARCH_HAS_CACHE_LINE_SIZE |
311 | def_bool y | |
312 | ||
8c2c3df3 CM |
313 | source "mm/Kconfig" |
314 | ||
aa42aa13 SS |
315 | config XEN_DOM0 |
316 | def_bool y | |
317 | depends on XEN | |
318 | ||
319 | config XEN | |
320 | bool "Xen guest support on ARM64 (EXPERIMENTAL)" | |
321 | depends on ARM64 && OF | |
83862ccf | 322 | select SWIOTLB_XEN |
aa42aa13 SS |
323 | help |
324 | Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64. | |
325 | ||
d03bb145 SC |
326 | config FORCE_MAX_ZONEORDER |
327 | int | |
328 | default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE) | |
329 | default "11" | |
330 | ||
8c2c3df3 CM |
331 | endmenu |
332 | ||
333 | menu "Boot options" | |
334 | ||
335 | config CMDLINE | |
336 | string "Default kernel command string" | |
337 | default "" | |
338 | help | |
339 | Provide a set of default command-line options at build time by | |
340 | entering them here. As a minimum, you should specify the the | |
341 | root device (e.g. root=/dev/nfs). | |
342 | ||
343 | config CMDLINE_FORCE | |
344 | bool "Always use the default kernel command string" | |
345 | help | |
346 | Always use the default kernel command string, even if the boot | |
347 | loader passes other arguments to the kernel. | |
348 | This is useful if you cannot or don't want to change the | |
349 | command-line options your boot loader passes to the kernel. | |
350 | ||
f4f75ad5 AB |
351 | config EFI_STUB |
352 | bool | |
353 | ||
f84d0275 MS |
354 | config EFI |
355 | bool "UEFI runtime support" | |
356 | depends on OF && !CPU_BIG_ENDIAN | |
357 | select LIBFDT | |
358 | select UCS2_STRING | |
359 | select EFI_PARAMS_FROM_FDT | |
e15dd494 | 360 | select EFI_RUNTIME_WRAPPERS |
f4f75ad5 AB |
361 | select EFI_STUB |
362 | select EFI_ARMSTUB | |
f84d0275 MS |
363 | default y |
364 | help | |
365 | This option provides support for runtime services provided | |
366 | by UEFI firmware (such as non-volatile variables, realtime | |
3c7f2550 MS |
367 | clock, and platform reset). A UEFI stub is also provided to |
368 | allow the kernel to be booted as an EFI application. This | |
369 | is only useful on systems that have UEFI firmware. | |
f84d0275 | 370 | |
8c2c3df3 CM |
371 | endmenu |
372 | ||
373 | menu "Userspace binary formats" | |
374 | ||
375 | source "fs/Kconfig.binfmt" | |
376 | ||
377 | config COMPAT | |
378 | bool "Kernel support for 32-bit EL0" | |
379 | depends on !ARM64_64K_PAGES | |
380 | select COMPAT_BINFMT_ELF | |
af1839eb | 381 | select HAVE_UID16 |
84b9e9b4 | 382 | select OLD_SIGSUSPEND3 |
51682036 | 383 | select COMPAT_OLD_SIGACTION |
8c2c3df3 CM |
384 | help |
385 | This option enables support for a 32-bit EL0 running under a 64-bit | |
386 | kernel at EL1. AArch32-specific components such as system calls, | |
387 | the user helper functions, VFP support and the ptrace interface are | |
388 | handled appropriately by the kernel. | |
389 | ||
390 | If you want to execute 32-bit userspace applications, say Y. | |
391 | ||
392 | config SYSVIPC_COMPAT | |
393 | def_bool y | |
394 | depends on COMPAT && SYSVIPC | |
395 | ||
396 | endmenu | |
397 | ||
166936ba LP |
398 | menu "Power management options" |
399 | ||
400 | source "kernel/power/Kconfig" | |
401 | ||
402 | config ARCH_SUSPEND_POSSIBLE | |
403 | def_bool y | |
404 | ||
405 | config ARM64_CPU_SUSPEND | |
406 | def_bool PM_SLEEP | |
407 | ||
408 | endmenu | |
409 | ||
1307220d LP |
410 | menu "CPU Power Management" |
411 | ||
412 | source "drivers/cpuidle/Kconfig" | |
413 | ||
52e7e816 RH |
414 | source "drivers/cpufreq/Kconfig" |
415 | ||
416 | endmenu | |
417 | ||
8c2c3df3 CM |
418 | source "net/Kconfig" |
419 | ||
420 | source "drivers/Kconfig" | |
421 | ||
f84d0275 MS |
422 | source "drivers/firmware/Kconfig" |
423 | ||
8c2c3df3 CM |
424 | source "fs/Kconfig" |
425 | ||
c3eb5b14 MZ |
426 | source "arch/arm64/kvm/Kconfig" |
427 | ||
8c2c3df3 CM |
428 | source "arch/arm64/Kconfig.debug" |
429 | ||
430 | source "security/Kconfig" | |
431 | ||
432 | source "crypto/Kconfig" | |
2c98833a AB |
433 | if CRYPTO |
434 | source "arch/arm64/crypto/Kconfig" | |
435 | endif | |
8c2c3df3 CM |
436 | |
437 | source "lib/Kconfig" |