Commit | Line | Data |
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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 |
04662bac | 14 | select CRC32 |
a103f466 | 15 | select FIRMWARE_TABLE |
2c870e61 | 16 | default y if X86 |
1c48aa36 | 17 | help |
1da177e4 | 18 | Advanced Configuration and Power Interface (ACPI) support for |
1c48aa36 | 19 | Linux requires an ACPI-compliant platform (hardware/firmware), |
1da177e4 LT |
20 | and assumes the presence of OS-directed configuration and power |
21 | management (OSPM) software. This option will enlarge your | |
22 | kernel by about 70K. | |
23 | ||
24 | Linux ACPI provides a robust functional replacement for several | |
25 | legacy configuration and power management interfaces, including | |
26 | the Plug-and-Play BIOS specification (PnP BIOS), the | |
27 | MultiProcessor Specification (MPS), and the Advanced Power | |
28 | Management (APM) specification. If both ACPI and APM support | |
1c48aa36 | 29 | are configured, ACPI is used. |
1da177e4 | 30 | |
1da177e4 | 31 | Linux support for ACPI is based on Intel Corporation's ACPI |
1c48aa36 BH |
32 | Component Architecture (ACPI CA). For more information on the |
33 | ACPI CA, see: | |
4ce77966 | 34 | <https://acpica.org/> |
1da177e4 | 35 | |
c7f5220d HG |
36 | ACPI is an open industry specification originally co-developed by |
37 | Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba. Currently, | |
38 | it is developed by the ACPI Specification Working Group (ASWG) under | |
39 | the UEFI Forum and any UEFI member can join the ASWG and contribute | |
40 | to the ACPI specification. | |
1c48aa36 | 41 | The specification is available at: |
0585c1c0 | 42 | <https://uefi.org/specifications> |
1da177e4 | 43 | |
3e11c3ce LB |
44 | if ACPI |
45 | ||
8a1664be GG |
46 | config ACPI_LEGACY_TABLES_LOOKUP |
47 | bool | |
48 | ||
46ba51ea HG |
49 | config ARCH_MIGHT_HAVE_ACPI_PDC |
50 | bool | |
51 | ||
d8f4f161 LP |
52 | config ACPI_GENERIC_GSI |
53 | bool | |
54 | ||
6e0a0ea1 GG |
55 | config ACPI_SYSTEM_POWER_STATES_SUPPORT |
56 | bool | |
57 | ||
d0562674 SS |
58 | config ACPI_CCA_REQUIRED |
59 | bool | |
60 | ||
f64bd790 DW |
61 | config ACPI_TABLE_LIB |
62 | bool | |
63 | ||
f4750798 RW |
64 | config ACPI_THERMAL_LIB |
65 | depends on THERMAL | |
66 | bool | |
67 | ||
4d946f79 | 68 | config ACPI_DEBUGGER |
8cfb0cdf | 69 | bool "AML debugger interface" |
4d946f79 LZ |
70 | select ACPI_DEBUG |
71 | help | |
836d0830 LZ |
72 | Enable in-kernel debugging of AML facilities: statistics, |
73 | internal object dump, single step control method execution. | |
4d946f79 LZ |
74 | This is still under development, currently enabling this only |
75 | results in the compilation of the ACPICA debugger files. | |
76 | ||
836d0830 LZ |
77 | if ACPI_DEBUGGER |
78 | ||
79 | config ACPI_DEBUGGER_USER | |
c117dfff | 80 | tristate "Userspace debugger accessibility" |
836d0830 LZ |
81 | depends on DEBUG_FS |
82 | help | |
83 | Export /sys/kernel/debug/acpi/acpidbg for userspace utilities | |
84 | to access the debugger functionalities. | |
85 | ||
86 | endif | |
87 | ||
ad1696f6 | 88 | config ACPI_SPCR_TABLE |
0231d000 PB |
89 | bool "ACPI Serial Port Console Redirection Support" |
90 | default y if X86 | |
91 | help | |
92 | Enable support for Serial Port Console Redirection (SPCR) Table. | |
93 | This table provides information about the configuration of the | |
94 | earlycon console. | |
ad1696f6 | 95 | |
d1eb86e5 ZR |
96 | config ACPI_FPDT |
97 | bool "ACPI Firmware Performance Data Table (FPDT) support" | |
c2465f95 | 98 | depends on X86_64 || ARM64 |
d1eb86e5 ZR |
99 | help |
100 | Enable support for the Firmware Performance Data Table (FPDT). | |
101 | This table provides information on the timing of the system | |
102 | boot, S3 suspend and S3 resume firmware code paths. | |
103 | ||
eeb2d80d SP |
104 | config ACPI_LPIT |
105 | bool | |
106 | depends on X86_64 | |
107 | default y | |
108 | ||
673d5b43 LB |
109 | config ACPI_SLEEP |
110 | bool | |
5d1e072b | 111 | depends on SUSPEND || HIBERNATION |
6e0a0ea1 | 112 | depends on ACPI_SYSTEM_POWER_STATES_SUPPORT |
673d5b43 LB |
113 | default y |
114 | ||
18d78b64 | 115 | config ACPI_REV_OVERRIDE_POSSIBLE |
9165dabb | 116 | bool "Allow supported ACPI revision to be overridden" |
18d78b64 RW |
117 | depends on X86 |
118 | default y | |
119 | help | |
120 | The platform firmware on some systems expects Linux to return "5" as | |
121 | the supported ACPI revision which makes it expose system configuration | |
122 | information in a special way. | |
123 | ||
124 | For example, based on what ACPI exports as the supported revision, | |
125 | Dell XPS 13 (2015) configures its audio device to either work in HDA | |
126 | mode or in I2S mode, where the former is supposed to be used on Linux | |
127 | until the latter is fully supported (in the kernel as well as in user | |
128 | space). | |
129 | ||
130 | This option enables a DMI-based quirk for the above Dell machine (so | |
131 | that HDA audio is exposed by the platform firmware to the kernel) and | |
132 | makes it possible to force the kernel to return "5" as the supported | |
133 | ACPI revision via the "acpi_rev_override" command line switch. | |
134 | ||
1195a098 TR |
135 | config ACPI_EC_DEBUGFS |
136 | tristate "EC read/write access through /sys/kernel/debug/ec" | |
1195a098 TR |
137 | help |
138 | Say N to disable Embedded Controller /sys/kernel/debug interface | |
139 | ||
500de3dd TR |
140 | Be aware that using this interface can confuse your Embedded |
141 | Controller in a way that a normal reboot is not enough. You then | |
25cb1bfd | 142 | have to power off your system, and remove the laptop battery for |
500de3dd | 143 | some seconds. |
1195a098 TR |
144 | An Embedded Controller typically is available on laptops and reads |
145 | sensor values like battery state and temperature. | |
500de3dd TR |
146 | The kernel accesses the EC through ACPI parsed code provided by BIOS |
147 | tables. This option allows to access the EC directly without ACPI | |
148 | code being involved. | |
1195a098 TR |
149 | Thus this option is a debug option that helps to write ACPI drivers |
150 | and can be used to identify ACPI code or EC firmware bugs. | |
151 | ||
1da177e4 LT |
152 | config ACPI_AC |
153 | tristate "AC Adapter" | |
1b3d4c3b | 154 | select POWER_SUPPLY |
07fefe4c | 155 | default y |
1da177e4 | 156 | help |
1c48aa36 BH |
157 | This driver supports the AC Adapter object, which indicates |
158 | whether a system is on AC or not. If you have a system that can | |
07fefe4c | 159 | switch between A/C and battery, say Y. |
1da177e4 | 160 | |
1c48aa36 BH |
161 | To compile this driver as a module, choose M here: |
162 | the module will be called ac. | |
163 | ||
1da177e4 LT |
164 | config ACPI_BATTERY |
165 | tristate "Battery" | |
1b3d4c3b | 166 | select POWER_SUPPLY |
07fefe4c | 167 | default y |
1da177e4 LT |
168 | help |
169 | This driver adds support for battery information through | |
170 | /proc/acpi/battery. If you have a mobile system with a battery, | |
171 | say Y. | |
172 | ||
1c48aa36 BH |
173 | To compile this driver as a module, choose M here: |
174 | the module will be called battery. | |
175 | ||
1da177e4 LT |
176 | config ACPI_BUTTON |
177 | tristate "Button" | |
c0968f0e | 178 | depends on INPUT |
07fefe4c | 179 | default y |
1da177e4 | 180 | help |
1c48aa36 | 181 | This driver handles events on the power, sleep, and lid buttons. |
7d13f94c KM |
182 | A daemon reads events from input devices or via netlink and |
183 | performs user-defined actions such as shutting down the system. | |
184 | This is necessary for software-controlled poweroff. | |
1c48aa36 BH |
185 | |
186 | To compile this driver as a module, choose M here: | |
187 | the module will be called button. | |
1da177e4 | 188 | |
a1b93e89 JT |
189 | config ACPI_TINY_POWER_BUTTON |
190 | tristate "Tiny Power Button Driver" | |
191 | depends on !ACPI_BUTTON | |
192 | help | |
193 | This driver provides a tiny alternative to the ACPI Button driver. | |
194 | The tiny power button driver only handles the power button. Rather | |
195 | than notifying userspace via the input layer or a netlink event, this | |
196 | driver directly signals the init process to shut down. | |
197 | ||
198 | This driver is particularly suitable for cloud and VM environments, | |
199 | which use a simulated power button to initiate a controlled poweroff, | |
200 | but which may not want to run a separate userspace daemon to process | |
201 | input events. | |
202 | ||
203 | config ACPI_TINY_POWER_BUTTON_SIGNAL | |
204 | int "Tiny Power Button Signal" | |
205 | depends on ACPI_TINY_POWER_BUTTON | |
206 | default 38 | |
207 | help | |
208 | Default signal to send to init in response to the power button. | |
209 | ||
210 | Likely values here include 38 (SIGRTMIN+4) to power off, or 2 | |
211 | (SIGINT) to simulate Ctrl+Alt+Del. | |
212 | ||
1da177e4 LT |
213 | config ACPI_VIDEO |
214 | tristate "Video" | |
038275d2 | 215 | depends on BACKLIGHT_CLASS_DEVICE |
03e2bf26 | 216 | depends on INPUT |
fe7aebb4 | 217 | depends on ACPI_WMI || !X86 |
63c4ec90 | 218 | select THERMAL |
1da177e4 | 219 | help |
1c48aa36 | 220 | This driver implements the ACPI Extensions For Display Adapters |
1da177e4 | 221 | for integrated graphics devices on motherboard, as specified in |
1c48aa36 BH |
222 | ACPI 2.0 Specification, Appendix B. This supports basic operations |
223 | such as defining the video POST device, retrieving EDID information, | |
224 | and setting up a video output. | |
225 | ||
226 | To compile this driver as a module, choose M here: | |
227 | the module will be called video. | |
1da177e4 LT |
228 | |
229 | config ACPI_FAN | |
230 | tristate "Fan" | |
d8054749 | 231 | depends on THERMAL |
07fefe4c | 232 | default y |
1da177e4 | 233 | help |
1c48aa36 | 234 | This driver supports ACPI fan devices, allowing user-mode |
1da177e4 LT |
235 | applications to perform basic fan control (on, off, status). |
236 | ||
1c48aa36 BH |
237 | To compile this driver as a module, choose M here: |
238 | the module will be called fan. | |
239 | ||
95c513ec RW |
240 | config ACPI_TAD |
241 | tristate "ACPI Time and Alarm (TAD) Device Support" | |
242 | depends on SYSFS && PM_SLEEP | |
243 | help | |
244 | The ACPI Time and Alarm (TAD) device is an alternative to the Real | |
245 | Time Clock (RTC). Its wake timers allow the system to transition from | |
246 | the S3 (or optionally S4/S5) state to S0 state after a time period | |
247 | elapses. In comparison with the RTC Alarm, the TAD provides a larger | |
248 | scale of flexibility in the wake timers. The time capabilities of the | |
249 | TAD maintain the time of day information across platform power | |
250 | transitions, and keep track of time even when the platform is turned | |
251 | off. | |
252 | ||
c8f7a62c | 253 | config ACPI_DOCK |
898b054f | 254 | bool "Dock" |
c8f7a62c | 255 | help |
1c48aa36 BH |
256 | This driver supports ACPI-controlled docking stations and removable |
257 | drive bays such as the IBM Ultrabay and the Dell Module Bay. | |
01b57e73 | 258 | |
239708a3 AC |
259 | config ACPI_CPU_FREQ_PSS |
260 | bool | |
239708a3 | 261 | |
35ae7133 SH |
262 | config ACPI_PROCESSOR_CSTATE |
263 | def_bool y | |
239ed06d | 264 | depends on ACPI_PROCESSOR |
cf8e8658 | 265 | depends on X86 |
35ae7133 | 266 | |
5f05586c AC |
267 | config ACPI_PROCESSOR_IDLE |
268 | bool | |
269 | select CPU_IDLE | |
270 | ||
935c760e TN |
271 | config ACPI_MCFG |
272 | bool | |
273 | ||
337aadff AC |
274 | config ACPI_CPPC_LIB |
275 | bool | |
276 | depends on ACPI_PROCESSOR | |
337aadff AC |
277 | select MAILBOX |
278 | select PCC | |
279 | help | |
280 | If this option is enabled, this file implements common functionality | |
281 | to parse CPPC tables as described in the ACPI 5.1+ spec. The | |
282 | routines implemented are meant to be used by other | |
283 | drivers to control CPU performance using CPPC semantics. | |
284 | If your platform does not support CPPC in firmware, | |
285 | leave this option disabled. | |
286 | ||
1da177e4 LT |
287 | config ACPI_PROCESSOR |
288 | tristate "Processor" | |
359df7c5 | 289 | depends on X86 || ARM64 || LOONGARCH || RISCV |
8fc85c6a | 290 | select ACPI_PROCESSOR_IDLE |
cf8e8658 | 291 | select ACPI_CPU_FREQ_PSS if X86 || LOONGARCH |
7fdc74da | 292 | select THERMAL |
07fefe4c | 293 | default y |
1da177e4 | 294 | help |
239708a3 AC |
295 | This driver adds support for the ACPI Processor package. It is required |
296 | by several flavors of cpufreq performance-state, thermal, throttling and | |
297 | idle drivers. | |
1c48aa36 BH |
298 | |
299 | To compile this driver as a module, choose M here: | |
300 | the module will be called processor. | |
4b88e330 | 301 | |
e92b297c ZY |
302 | config ACPI_IPMI |
303 | tristate "IPMI" | |
50121beb | 304 | depends on IPMI_HANDLER |
e92b297c ZY |
305 | help |
306 | This driver enables the ACPI to access the BMC controller. And it | |
307 | uses the IPMI request/response message to communicate with BMC | |
a8ab8ef4 | 308 | controller, which can be found on the server. |
e92b297c ZY |
309 | |
310 | To compile this driver as a module, choose M here: | |
311 | the module will be called as acpi_ipmi. | |
1da177e4 LT |
312 | |
313 | config ACPI_HOTPLUG_CPU | |
cbfc1bae | 314 | bool |
f756f28b | 315 | depends on ACPI_PROCESSOR && HOTPLUG_CPU |
1da177e4 | 316 | select ACPI_CONTAINER |
1da177e4 | 317 | |
8e0af514 SL |
318 | config ACPI_PROCESSOR_AGGREGATOR |
319 | tristate "Processor Aggregator" | |
320 | depends on ACPI_PROCESSOR | |
d91f79eb | 321 | depends on X86 |
8e0af514 SL |
322 | help |
323 | ACPI 4.0 defines processor Aggregator, which enables OS to perform | |
c4c4e2a5 | 324 | specific processor configuration and control that applies to all |
8e0af514 SL |
325 | processors in the platform. Currently only logical processor idling |
326 | is defined, which is to reduce power consumption. This driver | |
c4c4e2a5 | 327 | supports the new device. |
8e0af514 | 328 | |
1da177e4 LT |
329 | config ACPI_THERMAL |
330 | tristate "Thermal Zone" | |
331 | depends on ACPI_PROCESSOR | |
3f655ef8 | 332 | select THERMAL |
f4750798 | 333 | select ACPI_THERMAL_LIB |
07fefe4c | 334 | default y |
1da177e4 | 335 | help |
1c48aa36 | 336 | This driver supports ACPI thermal zones. Most mobile and |
1da177e4 LT |
337 | some desktop systems support ACPI thermal zones. It is HIGHLY |
338 | recommended that this option be enabled, as your processor(s) | |
339 | may be damaged without it. | |
340 | ||
1c48aa36 BH |
341 | To compile this driver as a module, choose M here: |
342 | the module will be called thermal. | |
343 | ||
a2ff95e0 | 344 | config ACPI_PLATFORM_PROFILE |
21f05a43 | 345 | tristate |
a2ff95e0 | 346 | |
7ce9573e RD |
347 | config ACPI_CUSTOM_DSDT_FILE |
348 | string "Custom DSDT Table file to include" | |
349 | default "" | |
1da177e4 | 350 | depends on !STANDALONE |
1da177e4 | 351 | help |
d89e9d6b | 352 | This option supports a custom DSDT by linking it into the kernel. |
d89e9d6b | 353 | |
c30fe7f7 | 354 | Enter the full path name to the file which includes the AmlCode |
82e4eb4e | 355 | or dsdt_aml_code declaration. |
1da177e4 | 356 | |
7ce9573e RD |
357 | If unsure, don't enter a file name. |
358 | ||
359 | config ACPI_CUSTOM_DSDT | |
360 | bool | |
361 | default ACPI_CUSTOM_DSDT_FILE != "" | |
362 | ||
91dda51a AM |
363 | config ARCH_HAS_ACPI_TABLE_UPGRADE |
364 | def_bool n | |
365 | ||
5d881327 LZ |
366 | config ACPI_TABLE_UPGRADE |
367 | bool "Allow upgrading ACPI tables via initrd" | |
91dda51a | 368 | depends on BLK_DEV_INITRD && ARCH_HAS_ACPI_TABLE_UPGRADE |
5d881327 | 369 | default y |
53aac44c | 370 | help |
5d881327 | 371 | This option provides functionality to upgrade arbitrary ACPI tables |
53aac44c TR |
372 | via initrd. No functional change if no ACPI tables are passed via |
373 | initrd, therefore it's safe to say Y. | |
cb1aaebe | 374 | See Documentation/admin-guide/acpi/initrd_table_override.rst for details |
53aac44c | 375 | |
98a455d9 SY |
376 | config ACPI_TABLE_OVERRIDE_VIA_BUILTIN_INITRD |
377 | bool "Override ACPI tables from built-in initrd" | |
378 | depends on ACPI_TABLE_UPGRADE | |
d2cbbf1f | 379 | depends on INITRAMFS_SOURCE!="" && INITRAMFS_COMPRESSION_NONE |
98a455d9 SY |
380 | help |
381 | This option provides functionality to override arbitrary ACPI tables | |
382 | from built-in uncompressed initrd. | |
383 | ||
cb1aaebe | 384 | See Documentation/admin-guide/acpi/initrd_table_override.rst for details |
98a455d9 | 385 | |
1da177e4 LT |
386 | config ACPI_DEBUG |
387 | bool "Debug Statements" | |
1da177e4 | 388 | help |
a0d84a92 BH |
389 | The ACPI subsystem can produce debug output. Saying Y enables this |
390 | output and increases the kernel size by around 50K. | |
391 | ||
392 | Use the acpi.debug_layer and acpi.debug_level kernel command-line | |
cb1aaebe | 393 | parameters documented in Documentation/firmware-guide/acpi/debug.rst and |
8c27ceff | 394 | Documentation/admin-guide/kernel-parameters.rst to control the type and |
a0d84a92 | 395 | amount of debug output. |
1da177e4 | 396 | |
8344b568 | 397 | config ACPI_PCI_SLOT |
ab1a2e03 | 398 | bool "PCI slot detection driver" |
5c6a1177 | 399 | depends on SYSFS && PCI |
8344b568 | 400 | help |
1c48aa36 BH |
401 | This driver creates entries in /sys/bus/pci/slots/ for all PCI |
402 | slots in the system. This can help correlate PCI bus addresses, | |
403 | i.e., segment/bus/device/function tuples, with physical slots in | |
404 | the system. If you are unsure, say N. | |
405 | ||
1da177e4 | 406 | config ACPI_CONTAINER |
06991c28 | 407 | bool "Container and Module Devices" |
ea6a4581 | 408 | default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU) |
1c48aa36 BH |
409 | help |
410 | This driver supports ACPI Container and Module devices (IDs | |
411 | ACPI0004, PNP0A05, and PNP0A06). | |
45b1b196 | 412 | |
1c48aa36 BH |
413 | This helps support hotplug of nodes, CPUs, and memory. |
414 | ||
1da177e4 | 415 | config ACPI_HOTPLUG_MEMORY |
0a347644 | 416 | bool "Memory Hotplug" |
bc02af93 | 417 | depends on MEMORY_HOTPLUG |
1da177e4 | 418 | help |
1c48aa36 BH |
419 | This driver supports ACPI memory hotplug. The driver |
420 | fields notifications on ACPI memory devices (PNP0C80), | |
421 | which represent memory ranges that may be onlined or | |
422 | offlined during runtime. | |
1da177e4 | 423 | |
1c48aa36 BH |
424 | If your hardware and firmware do not support adding or |
425 | removing memory devices at runtime, you need not enable | |
426 | this driver. | |
1da177e4 | 427 | |
c183619b JL |
428 | config ACPI_HOTPLUG_IOAPIC |
429 | bool | |
430 | depends on PCI | |
431 | depends on X86_IO_APIC | |
432 | default y | |
433 | ||
3f86b832 | 434 | config ACPI_SBS |
94f6c086 | 435 | tristate "Smart Battery System" |
b4150fc4 | 436 | depends on X86 |
1b3d4c3b | 437 | select POWER_SUPPLY |
3f86b832 | 438 | help |
1c48aa36 | 439 | This driver supports the Smart Battery System, another |
94f6c086 | 440 | type of access to battery information, found on some laptops. |
3f86b832 | 441 | |
1c48aa36 BH |
442 | To compile this driver as a module, choose M here: |
443 | the modules will be called sbs and sbshc. | |
444 | ||
801eab81 HY |
445 | config ACPI_HED |
446 | tristate "Hardware Error Device" | |
447 | help | |
448 | This driver supports the Hardware Error Device (PNP0C33), | |
449 | which is used to report some hardware errors notified via | |
450 | SCI, mainly the corrected errors. | |
451 | ||
d1ff4b1c | 452 | config ACPI_BGRT |
2223af38 | 453 | bool "Boottime Graphics Resource Table support" |
6e7300cf | 454 | depends on EFI && (X86 || ARM64) |
feb17406 | 455 | help |
d1ff4b1c MG |
456 | This driver adds support for exposing the ACPI Boottime Graphics |
457 | Resource Table, which allows the operating system to obtain | |
458 | data from the firmware boot splash. It will appear under | |
459 | /sys/firmware/acpi/bgrt/ . | |
460 | ||
af1ae78a AS |
461 | config ACPI_REDUCED_HARDWARE_ONLY |
462 | bool "Hardware-reduced ACPI support only" if EXPERT | |
af1ae78a | 463 | help |
99a33ffc HG |
464 | This config item changes the way the ACPI code is built. When this |
465 | option is selected, the kernel will use a specialized version of | |
466 | ACPICA that ONLY supports the ACPI "reduced hardware" mode. The | |
467 | resulting kernel will be smaller but it will also be restricted to | |
468 | running in ACPI reduced hardware mode ONLY. | |
af1ae78a | 469 | |
99a33ffc | 470 | If you are unsure what to do, do not enable this option. |
af1ae78a | 471 | |
bdf97013 | 472 | source "drivers/acpi/nfit/Kconfig" |
c710fcc5 | 473 | source "drivers/acpi/numa/Kconfig" |
a643ce20 | 474 | source "drivers/acpi/apei/Kconfig" |
6256ebd5 | 475 | source "drivers/acpi/dptf/Kconfig" |
a643ce20 | 476 | |
058dfc76 MW |
477 | config ACPI_WATCHDOG |
478 | bool | |
479 | ||
4b3db708 CG |
480 | config ACPI_EXTLOG |
481 | tristate "Extended Error Log support" | |
9613916b | 482 | depends on X86_MCE && X86_LOCAL_APIC && EDAC |
7ea6c6c1 | 483 | select UEFI_CPER |
4b3db708 CG |
484 | help |
485 | Certain usages such as Predictive Failure Analysis (PFA) require | |
486 | more information about the error than what can be described in | |
487 | processor machine check banks. Most server processors log | |
488 | additional information about the error in processor uncore | |
489 | registers. Since the addresses and layout of these registers vary | |
490 | widely from one processor to another, system software cannot | |
491 | readily make use of them. To complicate matters further, some of | |
492 | the additional error information cannot be constructed without | |
493 | detailed knowledge about platform topology. | |
494 | ||
495 | Enhanced MCA Logging allows firmware to provide additional error | |
496 | information to system software, synchronous with MCE or CMCI. This | |
2dfb7d51 CG |
497 | driver adds support for that functionality with corresponding |
498 | tracepoint which carries that information to userspace. | |
4b3db708 | 499 | |
4cf841e3 TL |
500 | config ACPI_ADXL |
501 | bool | |
502 | ||
0bf54fcd OP |
503 | config ACPI_CONFIGFS |
504 | tristate "ACPI configfs support" | |
505 | select CONFIGFS_FS | |
506 | help | |
507 | Select this option to enable support for ACPI configuration from | |
508 | userspace. The configurable ACPI groups will be visible under | |
509 | /config/acpi, assuming configfs is mounted under /config. | |
510 | ||
0db89fa2 CY |
511 | config ACPI_PFRUT |
512 | tristate "ACPI Platform Firmware Runtime Update and Telemetry" | |
513 | depends on 64BIT | |
514 | help | |
515 | This mechanism allows certain pieces of the platform firmware | |
516 | to be updated on the fly while the system is running (runtime) | |
517 | without the need to restart it, which is key in the cases when | |
518 | the system needs to be available 100% of the time and it cannot | |
519 | afford the downtime related to restarting it, or when the work | |
520 | carried out by the system is particularly important, so it cannot | |
521 | be interrupted, and it is not practical to wait until it is complete. | |
522 | ||
523 | The existing firmware code can be modified (driver update) or | |
524 | extended by adding new code to the firmware (code injection). | |
525 | ||
b0013e03 CY |
526 | Besides, the telemetry driver allows user space to fetch telemetry |
527 | data from the firmware with the help of the Platform Firmware Runtime | |
528 | Telemetry interface. | |
529 | ||
530 | To compile the drivers as modules, choose M here: | |
531 | the modules will be called pfr_update and pfr_telemetry. | |
0db89fa2 | 532 | |
88ef16d8 TN |
533 | if ARM64 |
534 | source "drivers/acpi/arm64/Kconfig" | |
f6f0c9a7 | 535 | endif |
0ce82232 JL |
536 | |
537 | config ACPI_PPTT | |
538 | bool | |
88ef16d8 | 539 | |
77e2a047 SH |
540 | config ACPI_PCC |
541 | bool "ACPI PCC Address Space" | |
542 | depends on PCC | |
543 | default y | |
544 | help | |
545 | The PCC Address Space also referred as PCC Operation Region pertains | |
546 | to the region of PCC subspace that succeeds the PCC signature. | |
547 | ||
548 | The PCC Operation Region works in conjunction with the PCC Table | |
549 | (Platform Communications Channel Table). PCC subspaces that are | |
550 | marked for use as PCC Operation Regions must not be used as PCC | |
551 | subspaces for the standard ACPI features such as CPPC, RASF, PDTT and | |
552 | MPST. These standard features must always use the PCC Table instead. | |
553 | ||
554 | Enable this feature if you want to set up and install the PCC Address | |
555 | Space handler to handle PCC OpRegion in the firmware. | |
556 | ||
e81c782c SH |
557 | config ACPI_FFH |
558 | bool "ACPI FFH Address Space" | |
559 | default n | |
560 | help | |
561 | The FFH(Fixed Function Hardware) Address Space also referred as FFH | |
562 | Operation Region allows to define platform specific opregion. | |
563 | ||
564 | Enable this feature if you want to set up and install the FFH Address | |
565 | Space handler to handle FFH OpRegion in the firmware. | |
566 | ||
fa870509 AS |
567 | source "drivers/acpi/pmic/Kconfig" |
568 | ||
3cf48554 JPB |
569 | config ACPI_VIOT |
570 | bool | |
571 | ||
e3435fff SH |
572 | config ACPI_PRMT |
573 | bool "Platform Runtime Mechanism Support" | |
5894cf57 | 574 | depends on EFI_RUNTIME_WRAPPERS && (X86_64 || ARM64) |
e3435fff SH |
575 | default y |
576 | help | |
577 | Platform Runtime Mechanism (PRM) is a firmware interface exposing a | |
578 | set of binary executables that can be called from the AML interpreter | |
579 | or directly from device drivers. | |
580 | ||
581 | Say Y to enable the AML interpreter to execute the PRM code. | |
582 | ||
583 | While this feature is optional in principle, leaving it out may | |
584 | substantially increase computational overhead related to the | |
585 | initialization of some server systems. | |
586 | ||
1da177e4 | 587 | endif # ACPI |
87e65d05 JK |
588 | |
589 | config X86_PM_TIMER | |
590 | bool "Power Management Timer Support" if EXPERT | |
591 | depends on X86 && (ACPI || JAILHOUSE_GUEST) | |
592 | default y | |
593 | help | |
594 | The Power Management Timer is available on all ACPI-capable, | |
595 | in most cases even if ACPI is unusable or blacklisted. | |
596 | ||
597 | This timing source is not affected by power management features | |
598 | like aggressive processor idling, throttling, frequency and/or | |
599 | voltage scaling, unlike the commonly used Time Stamp Counter | |
600 | (TSC) timing source. | |
601 | ||
602 | You should nearly always say Y here because many modern | |
603 | systems require this timer. |