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b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
1da177e4 LT |
2 | # |
3 | # ACPI Configuration | |
4 | # | |
5 | ||
f5d707ed AB |
6 | config ARCH_SUPPORTS_ACPI |
7 | bool | |
8 | ||
3f2c48c9 | 9 | menuconfig ACPI |
355ee5eb | 10 | bool "ACPI (Advanced Configuration and Power Interface) Support" |
2c870e61 | 11 | depends on ARCH_SUPPORTS_ACPI |
243b66e7 | 12 | select PNP |
2e61069b | 13 | select NLS |
2c870e61 | 14 | default y if X86 |
1c48aa36 | 15 | help |
1da177e4 | 16 | Advanced Configuration and Power Interface (ACPI) support for |
1c48aa36 | 17 | Linux requires an ACPI-compliant platform (hardware/firmware), |
1da177e4 LT |
18 | and assumes the presence of OS-directed configuration and power |
19 | management (OSPM) software. This option will enlarge your | |
20 | kernel by about 70K. | |
21 | ||
22 | Linux ACPI provides a robust functional replacement for several | |
23 | legacy configuration and power management interfaces, including | |
24 | the Plug-and-Play BIOS specification (PnP BIOS), the | |
25 | MultiProcessor Specification (MPS), and the Advanced Power | |
26 | Management (APM) specification. If both ACPI and APM support | |
1c48aa36 | 27 | are configured, ACPI is used. |
1da177e4 | 28 | |
1c48aa36 | 29 | The project home page for the Linux ACPI subsystem is here: |
aaf3d29f | 30 | <https://01.org/linux-acpi> |
1da177e4 LT |
31 | |
32 | Linux support for ACPI is based on Intel Corporation's ACPI | |
1c48aa36 BH |
33 | Component Architecture (ACPI CA). For more information on the |
34 | ACPI CA, see: | |
4ce77966 | 35 | <https://acpica.org/> |
1da177e4 | 36 | |
c7f5220d HG |
37 | ACPI is an open industry specification originally co-developed by |
38 | Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba. Currently, | |
39 | it is developed by the ACPI Specification Working Group (ASWG) under | |
40 | the UEFI Forum and any UEFI member can join the ASWG and contribute | |
41 | to the ACPI specification. | |
1c48aa36 | 42 | The specification is available at: |
0585c1c0 | 43 | <https://uefi.org/specifications> |
1da177e4 | 44 | |
3e11c3ce LB |
45 | if ACPI |
46 | ||
8a1664be GG |
47 | config ACPI_LEGACY_TABLES_LOOKUP |
48 | bool | |
49 | ||
46ba51ea HG |
50 | config ARCH_MIGHT_HAVE_ACPI_PDC |
51 | bool | |
52 | ||
d8f4f161 LP |
53 | config ACPI_GENERIC_GSI |
54 | bool | |
55 | ||
6e0a0ea1 GG |
56 | config ACPI_SYSTEM_POWER_STATES_SUPPORT |
57 | bool | |
58 | ||
d0562674 SS |
59 | config ACPI_CCA_REQUIRED |
60 | bool | |
61 | ||
4d946f79 | 62 | config ACPI_DEBUGGER |
8cfb0cdf | 63 | bool "AML debugger interface" |
4d946f79 LZ |
64 | select ACPI_DEBUG |
65 | help | |
836d0830 LZ |
66 | Enable in-kernel debugging of AML facilities: statistics, |
67 | internal object dump, single step control method execution. | |
4d946f79 LZ |
68 | This is still under development, currently enabling this only |
69 | results in the compilation of the ACPICA debugger files. | |
70 | ||
836d0830 LZ |
71 | if ACPI_DEBUGGER |
72 | ||
73 | config ACPI_DEBUGGER_USER | |
74 | tristate "Userspace debugger accessiblity" | |
75 | depends on DEBUG_FS | |
76 | help | |
77 | Export /sys/kernel/debug/acpi/acpidbg for userspace utilities | |
78 | to access the debugger functionalities. | |
79 | ||
80 | endif | |
81 | ||
ad1696f6 | 82 | config ACPI_SPCR_TABLE |
0231d000 PB |
83 | bool "ACPI Serial Port Console Redirection Support" |
84 | default y if X86 | |
85 | help | |
86 | Enable support for Serial Port Console Redirection (SPCR) Table. | |
87 | This table provides information about the configuration of the | |
88 | earlycon console. | |
ad1696f6 | 89 | |
d1eb86e5 ZR |
90 | config ACPI_FPDT |
91 | bool "ACPI Firmware Performance Data Table (FPDT) support" | |
92 | depends on X86_64 | |
93 | help | |
94 | Enable support for the Firmware Performance Data Table (FPDT). | |
95 | This table provides information on the timing of the system | |
96 | boot, S3 suspend and S3 resume firmware code paths. | |
97 | ||
eeb2d80d SP |
98 | config ACPI_LPIT |
99 | bool | |
100 | depends on X86_64 | |
101 | default y | |
102 | ||
673d5b43 LB |
103 | config ACPI_SLEEP |
104 | bool | |
5d1e072b | 105 | depends on SUSPEND || HIBERNATION |
6e0a0ea1 | 106 | depends on ACPI_SYSTEM_POWER_STATES_SUPPORT |
673d5b43 LB |
107 | default y |
108 | ||
18d78b64 | 109 | config ACPI_REV_OVERRIDE_POSSIBLE |
9165dabb | 110 | bool "Allow supported ACPI revision to be overridden" |
18d78b64 RW |
111 | depends on X86 |
112 | default y | |
113 | help | |
114 | The platform firmware on some systems expects Linux to return "5" as | |
115 | the supported ACPI revision which makes it expose system configuration | |
116 | information in a special way. | |
117 | ||
118 | For example, based on what ACPI exports as the supported revision, | |
119 | Dell XPS 13 (2015) configures its audio device to either work in HDA | |
120 | mode or in I2S mode, where the former is supposed to be used on Linux | |
121 | until the latter is fully supported (in the kernel as well as in user | |
122 | space). | |
123 | ||
124 | This option enables a DMI-based quirk for the above Dell machine (so | |
125 | that HDA audio is exposed by the platform firmware to the kernel) and | |
126 | makes it possible to force the kernel to return "5" as the supported | |
127 | ACPI revision via the "acpi_rev_override" command line switch. | |
128 | ||
1195a098 TR |
129 | config ACPI_EC_DEBUGFS |
130 | tristate "EC read/write access through /sys/kernel/debug/ec" | |
1195a098 TR |
131 | help |
132 | Say N to disable Embedded Controller /sys/kernel/debug interface | |
133 | ||
500de3dd TR |
134 | Be aware that using this interface can confuse your Embedded |
135 | Controller in a way that a normal reboot is not enough. You then | |
25cb1bfd | 136 | have to power off your system, and remove the laptop battery for |
500de3dd | 137 | some seconds. |
1195a098 TR |
138 | An Embedded Controller typically is available on laptops and reads |
139 | sensor values like battery state and temperature. | |
500de3dd TR |
140 | The kernel accesses the EC through ACPI parsed code provided by BIOS |
141 | tables. This option allows to access the EC directly without ACPI | |
142 | code being involved. | |
1195a098 TR |
143 | Thus this option is a debug option that helps to write ACPI drivers |
144 | and can be used to identify ACPI code or EC firmware bugs. | |
145 | ||
1da177e4 LT |
146 | config ACPI_AC |
147 | tristate "AC Adapter" | |
1b3d4c3b | 148 | select POWER_SUPPLY |
07fefe4c | 149 | default y |
1da177e4 | 150 | help |
1c48aa36 BH |
151 | This driver supports the AC Adapter object, which indicates |
152 | whether a system is on AC or not. If you have a system that can | |
07fefe4c | 153 | switch between A/C and battery, say Y. |
1da177e4 | 154 | |
1c48aa36 BH |
155 | To compile this driver as a module, choose M here: |
156 | the module will be called ac. | |
157 | ||
1da177e4 LT |
158 | config ACPI_BATTERY |
159 | tristate "Battery" | |
1b3d4c3b | 160 | select POWER_SUPPLY |
07fefe4c | 161 | default y |
1da177e4 LT |
162 | help |
163 | This driver adds support for battery information through | |
164 | /proc/acpi/battery. If you have a mobile system with a battery, | |
165 | say Y. | |
166 | ||
1c48aa36 BH |
167 | To compile this driver as a module, choose M here: |
168 | the module will be called battery. | |
169 | ||
1da177e4 LT |
170 | config ACPI_BUTTON |
171 | tristate "Button" | |
c0968f0e | 172 | depends on INPUT |
07fefe4c | 173 | default y |
1da177e4 | 174 | help |
1c48aa36 | 175 | This driver handles events on the power, sleep, and lid buttons. |
7d13f94c KM |
176 | A daemon reads events from input devices or via netlink and |
177 | performs user-defined actions such as shutting down the system. | |
178 | This is necessary for software-controlled poweroff. | |
1c48aa36 BH |
179 | |
180 | To compile this driver as a module, choose M here: | |
181 | the module will be called button. | |
1da177e4 | 182 | |
a1b93e89 JT |
183 | config ACPI_TINY_POWER_BUTTON |
184 | tristate "Tiny Power Button Driver" | |
185 | depends on !ACPI_BUTTON | |
186 | help | |
187 | This driver provides a tiny alternative to the ACPI Button driver. | |
188 | The tiny power button driver only handles the power button. Rather | |
189 | than notifying userspace via the input layer or a netlink event, this | |
190 | driver directly signals the init process to shut down. | |
191 | ||
192 | This driver is particularly suitable for cloud and VM environments, | |
193 | which use a simulated power button to initiate a controlled poweroff, | |
194 | but which may not want to run a separate userspace daemon to process | |
195 | input events. | |
196 | ||
197 | config ACPI_TINY_POWER_BUTTON_SIGNAL | |
198 | int "Tiny Power Button Signal" | |
199 | depends on ACPI_TINY_POWER_BUTTON | |
200 | default 38 | |
201 | help | |
202 | Default signal to send to init in response to the power button. | |
203 | ||
204 | Likely values here include 38 (SIGRTMIN+4) to power off, or 2 | |
205 | (SIGINT) to simulate Ctrl+Alt+Del. | |
206 | ||
1da177e4 LT |
207 | config ACPI_VIDEO |
208 | tristate "Video" | |
9f380fc5 | 209 | depends on X86 && BACKLIGHT_CLASS_DEVICE |
03e2bf26 | 210 | depends on INPUT |
63c4ec90 | 211 | select THERMAL |
1da177e4 | 212 | help |
1c48aa36 | 213 | This driver implements the ACPI Extensions For Display Adapters |
1da177e4 | 214 | for integrated graphics devices on motherboard, as specified in |
1c48aa36 BH |
215 | ACPI 2.0 Specification, Appendix B. This supports basic operations |
216 | such as defining the video POST device, retrieving EDID information, | |
217 | and setting up a video output. | |
218 | ||
219 | To compile this driver as a module, choose M here: | |
220 | the module will be called video. | |
1da177e4 LT |
221 | |
222 | config ACPI_FAN | |
223 | tristate "Fan" | |
d8054749 | 224 | depends on THERMAL |
07fefe4c | 225 | default y |
1da177e4 | 226 | help |
1c48aa36 | 227 | This driver supports ACPI fan devices, allowing user-mode |
1da177e4 LT |
228 | applications to perform basic fan control (on, off, status). |
229 | ||
1c48aa36 BH |
230 | To compile this driver as a module, choose M here: |
231 | the module will be called fan. | |
232 | ||
95c513ec RW |
233 | config ACPI_TAD |
234 | tristate "ACPI Time and Alarm (TAD) Device Support" | |
235 | depends on SYSFS && PM_SLEEP | |
236 | help | |
237 | The ACPI Time and Alarm (TAD) device is an alternative to the Real | |
238 | Time Clock (RTC). Its wake timers allow the system to transition from | |
239 | the S3 (or optionally S4/S5) state to S0 state after a time period | |
240 | elapses. In comparison with the RTC Alarm, the TAD provides a larger | |
241 | scale of flexibility in the wake timers. The time capabilities of the | |
242 | TAD maintain the time of day information across platform power | |
243 | transitions, and keep track of time even when the platform is turned | |
244 | off. | |
245 | ||
c8f7a62c | 246 | config ACPI_DOCK |
898b054f | 247 | bool "Dock" |
c8f7a62c | 248 | help |
1c48aa36 BH |
249 | This driver supports ACPI-controlled docking stations and removable |
250 | drive bays such as the IBM Ultrabay and the Dell Module Bay. | |
01b57e73 | 251 | |
239708a3 AC |
252 | config ACPI_CPU_FREQ_PSS |
253 | bool | |
254 | select THERMAL | |
255 | ||
35ae7133 SH |
256 | config ACPI_PROCESSOR_CSTATE |
257 | def_bool y | |
239ed06d | 258 | depends on ACPI_PROCESSOR |
35ae7133 SH |
259 | depends on IA64 || X86 |
260 | ||
5f05586c AC |
261 | config ACPI_PROCESSOR_IDLE |
262 | bool | |
263 | select CPU_IDLE | |
264 | ||
935c760e TN |
265 | config ACPI_MCFG |
266 | bool | |
267 | ||
337aadff AC |
268 | config ACPI_CPPC_LIB |
269 | bool | |
270 | depends on ACPI_PROCESSOR | |
337aadff AC |
271 | select MAILBOX |
272 | select PCC | |
273 | help | |
274 | If this option is enabled, this file implements common functionality | |
275 | to parse CPPC tables as described in the ACPI 5.1+ spec. The | |
276 | routines implemented are meant to be used by other | |
277 | drivers to control CPU performance using CPPC semantics. | |
278 | If your platform does not support CPPC in firmware, | |
279 | leave this option disabled. | |
280 | ||
1da177e4 LT |
281 | config ACPI_PROCESSOR |
282 | tristate "Processor" | |
b1121e2a | 283 | depends on X86 || IA64 || ARM64 || LOONGARCH |
8fc85c6a | 284 | select ACPI_PROCESSOR_IDLE |
b1121e2a | 285 | select ACPI_CPU_FREQ_PSS if X86 || IA64 || LOONGARCH |
07fefe4c | 286 | default y |
1da177e4 | 287 | help |
239708a3 AC |
288 | This driver adds support for the ACPI Processor package. It is required |
289 | by several flavors of cpufreq performance-state, thermal, throttling and | |
290 | idle drivers. | |
1c48aa36 BH |
291 | |
292 | To compile this driver as a module, choose M here: | |
293 | the module will be called processor. | |
4b88e330 | 294 | |
e92b297c ZY |
295 | config ACPI_IPMI |
296 | tristate "IPMI" | |
50121beb | 297 | depends on IPMI_HANDLER |
e92b297c ZY |
298 | help |
299 | This driver enables the ACPI to access the BMC controller. And it | |
300 | uses the IPMI request/response message to communicate with BMC | |
301 | controller, which can be found on on the server. | |
302 | ||
303 | To compile this driver as a module, choose M here: | |
304 | the module will be called as acpi_ipmi. | |
1da177e4 LT |
305 | |
306 | config ACPI_HOTPLUG_CPU | |
cbfc1bae | 307 | bool |
f756f28b | 308 | depends on ACPI_PROCESSOR && HOTPLUG_CPU |
1da177e4 | 309 | select ACPI_CONTAINER |
cbfc1bae | 310 | default y |
1da177e4 | 311 | |
8e0af514 SL |
312 | config ACPI_PROCESSOR_AGGREGATOR |
313 | tristate "Processor Aggregator" | |
314 | depends on ACPI_PROCESSOR | |
d91f79eb | 315 | depends on X86 |
8e0af514 SL |
316 | help |
317 | ACPI 4.0 defines processor Aggregator, which enables OS to perform | |
c4c4e2a5 | 318 | specific processor configuration and control that applies to all |
8e0af514 SL |
319 | processors in the platform. Currently only logical processor idling |
320 | is defined, which is to reduce power consumption. This driver | |
c4c4e2a5 | 321 | supports the new device. |
8e0af514 | 322 | |
1da177e4 LT |
323 | config ACPI_THERMAL |
324 | tristate "Thermal Zone" | |
325 | depends on ACPI_PROCESSOR | |
3f655ef8 | 326 | select THERMAL |
07fefe4c | 327 | default y |
1da177e4 | 328 | help |
1c48aa36 | 329 | This driver supports ACPI thermal zones. Most mobile and |
1da177e4 LT |
330 | some desktop systems support ACPI thermal zones. It is HIGHLY |
331 | recommended that this option be enabled, as your processor(s) | |
332 | may be damaged without it. | |
333 | ||
1c48aa36 BH |
334 | To compile this driver as a module, choose M here: |
335 | the module will be called thermal. | |
336 | ||
a2ff95e0 | 337 | config ACPI_PLATFORM_PROFILE |
21f05a43 | 338 | tristate |
a2ff95e0 | 339 | |
7ce9573e RD |
340 | config ACPI_CUSTOM_DSDT_FILE |
341 | string "Custom DSDT Table file to include" | |
342 | default "" | |
1da177e4 | 343 | depends on !STANDALONE |
1da177e4 | 344 | help |
d89e9d6b | 345 | This option supports a custom DSDT by linking it into the kernel. |
cb1aaebe | 346 | See Documentation/admin-guide/acpi/dsdt-override.rst |
d89e9d6b | 347 | |
c30fe7f7 | 348 | Enter the full path name to the file which includes the AmlCode |
82e4eb4e | 349 | or dsdt_aml_code declaration. |
1da177e4 | 350 | |
7ce9573e RD |
351 | If unsure, don't enter a file name. |
352 | ||
353 | config ACPI_CUSTOM_DSDT | |
354 | bool | |
355 | default ACPI_CUSTOM_DSDT_FILE != "" | |
356 | ||
91dda51a AM |
357 | config ARCH_HAS_ACPI_TABLE_UPGRADE |
358 | def_bool n | |
359 | ||
5d881327 LZ |
360 | config ACPI_TABLE_UPGRADE |
361 | bool "Allow upgrading ACPI tables via initrd" | |
91dda51a | 362 | depends on BLK_DEV_INITRD && ARCH_HAS_ACPI_TABLE_UPGRADE |
5d881327 | 363 | default y |
53aac44c | 364 | help |
5d881327 | 365 | This option provides functionality to upgrade arbitrary ACPI tables |
53aac44c TR |
366 | via initrd. No functional change if no ACPI tables are passed via |
367 | initrd, therefore it's safe to say Y. | |
cb1aaebe | 368 | See Documentation/admin-guide/acpi/initrd_table_override.rst for details |
53aac44c | 369 | |
98a455d9 SY |
370 | config ACPI_TABLE_OVERRIDE_VIA_BUILTIN_INITRD |
371 | bool "Override ACPI tables from built-in initrd" | |
372 | depends on ACPI_TABLE_UPGRADE | |
d2cbbf1f | 373 | depends on INITRAMFS_SOURCE!="" && INITRAMFS_COMPRESSION_NONE |
98a455d9 SY |
374 | help |
375 | This option provides functionality to override arbitrary ACPI tables | |
376 | from built-in uncompressed initrd. | |
377 | ||
cb1aaebe | 378 | See Documentation/admin-guide/acpi/initrd_table_override.rst for details |
98a455d9 | 379 | |
1da177e4 LT |
380 | config ACPI_DEBUG |
381 | bool "Debug Statements" | |
1da177e4 | 382 | help |
a0d84a92 BH |
383 | The ACPI subsystem can produce debug output. Saying Y enables this |
384 | output and increases the kernel size by around 50K. | |
385 | ||
386 | Use the acpi.debug_layer and acpi.debug_level kernel command-line | |
cb1aaebe | 387 | parameters documented in Documentation/firmware-guide/acpi/debug.rst and |
8c27ceff | 388 | Documentation/admin-guide/kernel-parameters.rst to control the type and |
a0d84a92 | 389 | amount of debug output. |
1da177e4 | 390 | |
8344b568 | 391 | config ACPI_PCI_SLOT |
ab1a2e03 | 392 | bool "PCI slot detection driver" |
5c6a1177 | 393 | depends on SYSFS && PCI |
8344b568 | 394 | help |
1c48aa36 BH |
395 | This driver creates entries in /sys/bus/pci/slots/ for all PCI |
396 | slots in the system. This can help correlate PCI bus addresses, | |
397 | i.e., segment/bus/device/function tuples, with physical slots in | |
398 | the system. If you are unsure, say N. | |
399 | ||
1da177e4 | 400 | config ACPI_CONTAINER |
06991c28 | 401 | bool "Container and Module Devices" |
ea6a4581 | 402 | default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU) |
1c48aa36 BH |
403 | help |
404 | This driver supports ACPI Container and Module devices (IDs | |
405 | ACPI0004, PNP0A05, and PNP0A06). | |
45b1b196 | 406 | |
1c48aa36 BH |
407 | This helps support hotplug of nodes, CPUs, and memory. |
408 | ||
1da177e4 | 409 | config ACPI_HOTPLUG_MEMORY |
0a347644 | 410 | bool "Memory Hotplug" |
bc02af93 | 411 | depends on MEMORY_HOTPLUG |
1da177e4 | 412 | help |
1c48aa36 BH |
413 | This driver supports ACPI memory hotplug. The driver |
414 | fields notifications on ACPI memory devices (PNP0C80), | |
415 | which represent memory ranges that may be onlined or | |
416 | offlined during runtime. | |
1da177e4 | 417 | |
1c48aa36 BH |
418 | If your hardware and firmware do not support adding or |
419 | removing memory devices at runtime, you need not enable | |
420 | this driver. | |
1da177e4 | 421 | |
c183619b JL |
422 | config ACPI_HOTPLUG_IOAPIC |
423 | bool | |
424 | depends on PCI | |
425 | depends on X86_IO_APIC | |
426 | default y | |
427 | ||
3f86b832 | 428 | config ACPI_SBS |
94f6c086 | 429 | tristate "Smart Battery System" |
b4150fc4 | 430 | depends on X86 |
1b3d4c3b | 431 | select POWER_SUPPLY |
3f86b832 | 432 | help |
1c48aa36 | 433 | This driver supports the Smart Battery System, another |
94f6c086 | 434 | type of access to battery information, found on some laptops. |
3f86b832 | 435 | |
1c48aa36 BH |
436 | To compile this driver as a module, choose M here: |
437 | the modules will be called sbs and sbshc. | |
438 | ||
801eab81 HY |
439 | config ACPI_HED |
440 | tristate "Hardware Error Device" | |
441 | help | |
442 | This driver supports the Hardware Error Device (PNP0C33), | |
443 | which is used to report some hardware errors notified via | |
444 | SCI, mainly the corrected errors. | |
445 | ||
526b4af4 TR |
446 | config ACPI_CUSTOM_METHOD |
447 | tristate "Allow ACPI methods to be inserted/replaced at run time" | |
448 | depends on DEBUG_FS | |
526b4af4 | 449 | help |
bd1b2a55 | 450 | This debug facility allows ACPI AML methods to be inserted and/or |
526b4af4 | 451 | replaced without rebooting the system. For details refer to: |
cb1aaebe | 452 | Documentation/firmware-guide/acpi/method-customizing.rst. |
526b4af4 TR |
453 | |
454 | NOTE: This option is security sensitive, because it allows arbitrary | |
455 | kernel memory to be written to by root (uid=0) users, allowing them | |
456 | to bypass certain security measures (e.g. if root is not allowed to | |
457 | load additional kernel modules after boot, this feature may be used | |
458 | to override that restriction). | |
459 | ||
d1ff4b1c | 460 | config ACPI_BGRT |
2223af38 | 461 | bool "Boottime Graphics Resource Table support" |
6e7300cf | 462 | depends on EFI && (X86 || ARM64) |
feb17406 | 463 | help |
d1ff4b1c MG |
464 | This driver adds support for exposing the ACPI Boottime Graphics |
465 | Resource Table, which allows the operating system to obtain | |
466 | data from the firmware boot splash. It will appear under | |
467 | /sys/firmware/acpi/bgrt/ . | |
468 | ||
af1ae78a AS |
469 | config ACPI_REDUCED_HARDWARE_ONLY |
470 | bool "Hardware-reduced ACPI support only" if EXPERT | |
471 | def_bool n | |
af1ae78a | 472 | help |
99a33ffc HG |
473 | This config item changes the way the ACPI code is built. When this |
474 | option is selected, the kernel will use a specialized version of | |
475 | ACPICA that ONLY supports the ACPI "reduced hardware" mode. The | |
476 | resulting kernel will be smaller but it will also be restricted to | |
477 | running in ACPI reduced hardware mode ONLY. | |
af1ae78a | 478 | |
99a33ffc | 479 | If you are unsure what to do, do not enable this option. |
af1ae78a | 480 | |
bdf97013 | 481 | source "drivers/acpi/nfit/Kconfig" |
c710fcc5 | 482 | source "drivers/acpi/numa/Kconfig" |
a643ce20 | 483 | source "drivers/acpi/apei/Kconfig" |
6256ebd5 | 484 | source "drivers/acpi/dptf/Kconfig" |
a643ce20 | 485 | |
058dfc76 MW |
486 | config ACPI_WATCHDOG |
487 | bool | |
488 | ||
4b3db708 CG |
489 | config ACPI_EXTLOG |
490 | tristate "Extended Error Log support" | |
9613916b | 491 | depends on X86_MCE && X86_LOCAL_APIC && EDAC |
7ea6c6c1 | 492 | select UEFI_CPER |
4b3db708 CG |
493 | help |
494 | Certain usages such as Predictive Failure Analysis (PFA) require | |
495 | more information about the error than what can be described in | |
496 | processor machine check banks. Most server processors log | |
497 | additional information about the error in processor uncore | |
498 | registers. Since the addresses and layout of these registers vary | |
499 | widely from one processor to another, system software cannot | |
500 | readily make use of them. To complicate matters further, some of | |
501 | the additional error information cannot be constructed without | |
502 | detailed knowledge about platform topology. | |
503 | ||
504 | Enhanced MCA Logging allows firmware to provide additional error | |
505 | information to system software, synchronous with MCE or CMCI. This | |
2dfb7d51 CG |
506 | driver adds support for that functionality with corresponding |
507 | tracepoint which carries that information to userspace. | |
4b3db708 | 508 | |
4cf841e3 TL |
509 | config ACPI_ADXL |
510 | bool | |
511 | ||
0bf54fcd OP |
512 | config ACPI_CONFIGFS |
513 | tristate "ACPI configfs support" | |
514 | select CONFIGFS_FS | |
515 | help | |
516 | Select this option to enable support for ACPI configuration from | |
517 | userspace. The configurable ACPI groups will be visible under | |
518 | /config/acpi, assuming configfs is mounted under /config. | |
519 | ||
88ef16d8 TN |
520 | if ARM64 |
521 | source "drivers/acpi/arm64/Kconfig" | |
0ce82232 JL |
522 | |
523 | config ACPI_PPTT | |
524 | bool | |
88ef16d8 TN |
525 | endif |
526 | ||
fa870509 AS |
527 | source "drivers/acpi/pmic/Kconfig" |
528 | ||
3cf48554 JPB |
529 | config ACPI_VIOT |
530 | bool | |
531 | ||
1da177e4 | 532 | endif # ACPI |
87e65d05 JK |
533 | |
534 | config X86_PM_TIMER | |
535 | bool "Power Management Timer Support" if EXPERT | |
536 | depends on X86 && (ACPI || JAILHOUSE_GUEST) | |
537 | default y | |
538 | help | |
539 | The Power Management Timer is available on all ACPI-capable, | |
540 | in most cases even if ACPI is unusable or blacklisted. | |
541 | ||
542 | This timing source is not affected by power management features | |
543 | like aggressive processor idling, throttling, frequency and/or | |
544 | voltage scaling, unlike the commonly used Time Stamp Counter | |
545 | (TSC) timing source. | |
546 | ||
547 | You should nearly always say Y here because many modern | |
548 | systems require this timer. | |
cefc7ca4 EK |
549 | |
550 | config ACPI_PRMT | |
551 | bool "Platform Runtime Mechanism Support" | |
552 | depends on EFI && X86_64 | |
553 | default y | |
9b52363b RW |
554 | help |
555 | Platform Runtime Mechanism (PRM) is a firmware interface exposing a | |
556 | set of binary executables that can be called from the AML interpreter | |
557 | or directly from device drivers. | |
558 | ||
559 | Say Y to enable the AML interpreter to execute the PRM code. | |
560 | ||
561 | While this feature is optional in principle, leaving it out may | |
562 | substantially increase computational overhead related to the | |
563 | initialization of some server systems. |