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Commit | Line | Data |
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1da177e4 LT |
1 | # |
2 | # ACPI Configuration | |
3 | # | |
4 | ||
3f2c48c9 | 5 | menuconfig ACPI |
355ee5eb | 6 | bool "ACPI (Advanced Configuration and Power Interface) Support" |
1da177e4 LT |
7 | depends on !IA64_HP_SIM |
8 | depends on IA64 || X86 | |
1300124f | 9 | depends on PCI |
243b66e7 | 10 | select PNP |
1da177e4 | 11 | default y |
1c48aa36 | 12 | help |
1da177e4 | 13 | Advanced Configuration and Power Interface (ACPI) support for |
1c48aa36 | 14 | Linux requires an ACPI-compliant platform (hardware/firmware), |
1da177e4 LT |
15 | and assumes the presence of OS-directed configuration and power |
16 | management (OSPM) software. This option will enlarge your | |
17 | kernel by about 70K. | |
18 | ||
19 | Linux ACPI provides a robust functional replacement for several | |
20 | legacy configuration and power management interfaces, including | |
21 | the Plug-and-Play BIOS specification (PnP BIOS), the | |
22 | MultiProcessor Specification (MPS), and the Advanced Power | |
23 | Management (APM) specification. If both ACPI and APM support | |
1c48aa36 | 24 | are configured, ACPI is used. |
1da177e4 | 25 | |
1c48aa36 | 26 | The project home page for the Linux ACPI subsystem is here: |
aaf3d29f | 27 | <https://01.org/linux-acpi> |
1da177e4 LT |
28 | |
29 | Linux support for ACPI is based on Intel Corporation's ACPI | |
1c48aa36 BH |
30 | Component Architecture (ACPI CA). For more information on the |
31 | ACPI CA, see: | |
32 | <http://acpica.org/> | |
1da177e4 | 33 | |
c7f5220d HG |
34 | ACPI is an open industry specification originally co-developed by |
35 | Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba. Currently, | |
36 | it is developed by the ACPI Specification Working Group (ASWG) under | |
37 | the UEFI Forum and any UEFI member can join the ASWG and contribute | |
38 | to the ACPI specification. | |
1c48aa36 | 39 | The specification is available at: |
1da177e4 | 40 | <http://www.acpi.info> |
c7f5220d | 41 | <http://www.uefi.org/acpi/specs> |
1da177e4 | 42 | |
3e11c3ce LB |
43 | if ACPI |
44 | ||
8a1664be GG |
45 | config ACPI_LEGACY_TABLES_LOOKUP |
46 | bool | |
47 | ||
673d5b43 LB |
48 | config ACPI_SLEEP |
49 | bool | |
5d1e072b | 50 | depends on SUSPEND || HIBERNATION |
673d5b43 LB |
51 | default y |
52 | ||
e2a7c3d7 LT |
53 | config ACPI_PROCFS_POWER |
54 | bool "Deprecated power /proc/acpi directories" | |
55 | depends on PROC_FS | |
56 | help | |
57 | For backwards compatibility, this option allows | |
58 | deprecated power /proc/acpi/ directories to exist, even when | |
59 | they have been replaced by functions in /sys. | |
60 | The deprecated directories (and their replacements) include: | |
61 | /proc/acpi/battery/* (/sys/class/power_supply/*) | |
62 | /proc/acpi/ac_adapter/* (sys/class/power_supply/*) | |
63 | This option has no effect on /proc/acpi/ directories | |
64 | and functions, which do not yet exist in /sys | |
65 | This option, together with the proc directories, will be | |
3afcb96f | 66 | deleted in the future. |
e2a7c3d7 LT |
67 | |
68 | Say N to delete power /proc/acpi/ directories that have moved to /sys/ | |
69 | ||
1195a098 TR |
70 | config ACPI_EC_DEBUGFS |
71 | tristate "EC read/write access through /sys/kernel/debug/ec" | |
500de3dd | 72 | default n |
1195a098 TR |
73 | help |
74 | Say N to disable Embedded Controller /sys/kernel/debug interface | |
75 | ||
500de3dd TR |
76 | Be aware that using this interface can confuse your Embedded |
77 | Controller in a way that a normal reboot is not enough. You then | |
25cb1bfd | 78 | have to power off your system, and remove the laptop battery for |
500de3dd | 79 | some seconds. |
1195a098 TR |
80 | An Embedded Controller typically is available on laptops and reads |
81 | sensor values like battery state and temperature. | |
500de3dd TR |
82 | The kernel accesses the EC through ACPI parsed code provided by BIOS |
83 | tables. This option allows to access the EC directly without ACPI | |
84 | code being involved. | |
1195a098 TR |
85 | Thus this option is a debug option that helps to write ACPI drivers |
86 | and can be used to identify ACPI code or EC firmware bugs. | |
87 | ||
1da177e4 LT |
88 | config ACPI_AC |
89 | tristate "AC Adapter" | |
5527c8be | 90 | depends on X86 |
1b3d4c3b | 91 | select POWER_SUPPLY |
07fefe4c | 92 | default y |
1da177e4 | 93 | help |
1c48aa36 BH |
94 | This driver supports the AC Adapter object, which indicates |
95 | whether a system is on AC or not. If you have a system that can | |
07fefe4c | 96 | switch between A/C and battery, say Y. |
1da177e4 | 97 | |
1c48aa36 BH |
98 | To compile this driver as a module, choose M here: |
99 | the module will be called ac. | |
100 | ||
1da177e4 LT |
101 | config ACPI_BATTERY |
102 | tristate "Battery" | |
5527c8be | 103 | depends on X86 |
1b3d4c3b | 104 | select POWER_SUPPLY |
07fefe4c | 105 | default y |
1da177e4 LT |
106 | help |
107 | This driver adds support for battery information through | |
108 | /proc/acpi/battery. If you have a mobile system with a battery, | |
109 | say Y. | |
110 | ||
1c48aa36 BH |
111 | To compile this driver as a module, choose M here: |
112 | the module will be called battery. | |
113 | ||
1da177e4 LT |
114 | config ACPI_BUTTON |
115 | tristate "Button" | |
c0968f0e | 116 | depends on INPUT |
07fefe4c | 117 | default y |
1da177e4 | 118 | help |
1c48aa36 | 119 | This driver handles events on the power, sleep, and lid buttons. |
7d13f94c KM |
120 | A daemon reads events from input devices or via netlink and |
121 | performs user-defined actions such as shutting down the system. | |
122 | This is necessary for software-controlled poweroff. | |
1c48aa36 BH |
123 | |
124 | To compile this driver as a module, choose M here: | |
125 | the module will be called button. | |
1da177e4 LT |
126 | |
127 | config ACPI_VIDEO | |
128 | tristate "Video" | |
9f380fc5 | 129 | depends on X86 && BACKLIGHT_CLASS_DEVICE |
03e2bf26 | 130 | depends on INPUT |
63c4ec90 | 131 | select THERMAL |
1da177e4 | 132 | help |
1c48aa36 | 133 | This driver implements the ACPI Extensions For Display Adapters |
1da177e4 | 134 | for integrated graphics devices on motherboard, as specified in |
1c48aa36 BH |
135 | ACPI 2.0 Specification, Appendix B. This supports basic operations |
136 | such as defining the video POST device, retrieving EDID information, | |
137 | and setting up a video output. | |
138 | ||
139 | To compile this driver as a module, choose M here: | |
140 | the module will be called video. | |
1da177e4 LT |
141 | |
142 | config ACPI_FAN | |
143 | tristate "Fan" | |
63c4ec90 | 144 | select THERMAL |
07fefe4c | 145 | default y |
1da177e4 | 146 | help |
1c48aa36 | 147 | This driver supports ACPI fan devices, allowing user-mode |
1da177e4 LT |
148 | applications to perform basic fan control (on, off, status). |
149 | ||
1c48aa36 BH |
150 | To compile this driver as a module, choose M here: |
151 | the module will be called fan. | |
152 | ||
c8f7a62c | 153 | config ACPI_DOCK |
898b054f | 154 | bool "Dock" |
c8f7a62c | 155 | help |
1c48aa36 BH |
156 | This driver supports ACPI-controlled docking stations and removable |
157 | drive bays such as the IBM Ultrabay and the Dell Module Bay. | |
01b57e73 | 158 | |
1da177e4 LT |
159 | config ACPI_PROCESSOR |
160 | tristate "Processor" | |
63c4ec90 | 161 | select THERMAL |
a4084c14 | 162 | select CPU_IDLE |
07fefe4c | 163 | default y |
1da177e4 | 164 | help |
1c48aa36 BH |
165 | This driver installs ACPI as the idle handler for Linux and uses |
166 | ACPI C2 and C3 processor states to save power on systems that | |
07fefe4c | 167 | support it. It is required by several flavors of cpufreq |
1c48aa36 BH |
168 | performance-state drivers. |
169 | ||
170 | To compile this driver as a module, choose M here: | |
171 | the module will be called processor. | |
4b88e330 | 172 | |
e92b297c ZY |
173 | config ACPI_IPMI |
174 | tristate "IPMI" | |
4b88e330 | 175 | depends on IPMI_SI |
e92b297c ZY |
176 | default n |
177 | help | |
178 | This driver enables the ACPI to access the BMC controller. And it | |
179 | uses the IPMI request/response message to communicate with BMC | |
180 | controller, which can be found on on the server. | |
181 | ||
182 | To compile this driver as a module, choose M here: | |
183 | the module will be called as acpi_ipmi. | |
1da177e4 LT |
184 | |
185 | config ACPI_HOTPLUG_CPU | |
cbfc1bae | 186 | bool |
f756f28b | 187 | depends on ACPI_PROCESSOR && HOTPLUG_CPU |
1da177e4 | 188 | select ACPI_CONTAINER |
cbfc1bae | 189 | default y |
1da177e4 | 190 | |
8e0af514 SL |
191 | config ACPI_PROCESSOR_AGGREGATOR |
192 | tristate "Processor Aggregator" | |
193 | depends on ACPI_PROCESSOR | |
d91f79eb | 194 | depends on X86 |
8e0af514 SL |
195 | help |
196 | ACPI 4.0 defines processor Aggregator, which enables OS to perform | |
c4c4e2a5 | 197 | specific processor configuration and control that applies to all |
8e0af514 SL |
198 | processors in the platform. Currently only logical processor idling |
199 | is defined, which is to reduce power consumption. This driver | |
c4c4e2a5 | 200 | supports the new device. |
8e0af514 | 201 | |
1da177e4 LT |
202 | config ACPI_THERMAL |
203 | tristate "Thermal Zone" | |
204 | depends on ACPI_PROCESSOR | |
3f655ef8 | 205 | select THERMAL |
07fefe4c | 206 | default y |
1da177e4 | 207 | help |
1c48aa36 | 208 | This driver supports ACPI thermal zones. Most mobile and |
1da177e4 LT |
209 | some desktop systems support ACPI thermal zones. It is HIGHLY |
210 | recommended that this option be enabled, as your processor(s) | |
211 | may be damaged without it. | |
212 | ||
1c48aa36 BH |
213 | To compile this driver as a module, choose M here: |
214 | the module will be called thermal. | |
215 | ||
1da177e4 LT |
216 | config ACPI_NUMA |
217 | bool "NUMA support" | |
218 | depends on NUMA | |
762834e8 | 219 | depends on (X86 || IA64) |
1da177e4 LT |
220 | default y if IA64_GENERIC || IA64_SGI_SN2 |
221 | ||
7ce9573e RD |
222 | config ACPI_CUSTOM_DSDT_FILE |
223 | string "Custom DSDT Table file to include" | |
224 | default "" | |
1da177e4 | 225 | depends on !STANDALONE |
1da177e4 | 226 | help |
d89e9d6b LB |
227 | This option supports a custom DSDT by linking it into the kernel. |
228 | See Documentation/acpi/dsdt-override.txt | |
229 | ||
c30fe7f7 UZ |
230 | Enter the full path name to the file which includes the AmlCode |
231 | declaration. | |
1da177e4 | 232 | |
7ce9573e RD |
233 | If unsure, don't enter a file name. |
234 | ||
235 | config ACPI_CUSTOM_DSDT | |
236 | bool | |
237 | default ACPI_CUSTOM_DSDT_FILE != "" | |
238 | ||
53aac44c | 239 | config ACPI_INITRD_TABLE_OVERRIDE |
565d956a TR |
240 | bool "ACPI tables override via initrd" |
241 | depends on BLK_DEV_INITRD && X86 | |
53aac44c TR |
242 | default n |
243 | help | |
244 | This option provides functionality to override arbitrary ACPI tables | |
245 | via initrd. No functional change if no ACPI tables are passed via | |
246 | initrd, therefore it's safe to say Y. | |
247 | See Documentation/acpi/initrd_table_override.txt for details | |
248 | ||
1da177e4 LT |
249 | config ACPI_DEBUG |
250 | bool "Debug Statements" | |
1da177e4 LT |
251 | default n |
252 | help | |
a0d84a92 BH |
253 | The ACPI subsystem can produce debug output. Saying Y enables this |
254 | output and increases the kernel size by around 50K. | |
255 | ||
256 | Use the acpi.debug_layer and acpi.debug_level kernel command-line | |
257 | parameters documented in Documentation/acpi/debug.txt and | |
258 | Documentation/kernel-parameters.txt to control the type and | |
259 | amount of debug output. | |
1da177e4 | 260 | |
8344b568 | 261 | config ACPI_PCI_SLOT |
ab1a2e03 | 262 | bool "PCI slot detection driver" |
268a03a4 | 263 | depends on SYSFS |
8344b568 AC |
264 | default n |
265 | help | |
1c48aa36 BH |
266 | This driver creates entries in /sys/bus/pci/slots/ for all PCI |
267 | slots in the system. This can help correlate PCI bus addresses, | |
268 | i.e., segment/bus/device/function tuples, with physical slots in | |
269 | the system. If you are unsure, say N. | |
270 | ||
1da177e4 | 271 | config X86_PM_TIMER |
6a108a14 | 272 | bool "Power Management Timer Support" if EXPERT |
1da177e4 | 273 | depends on X86 |
07fefe4c | 274 | default y |
1da177e4 LT |
275 | help |
276 | The Power Management Timer is available on all ACPI-capable, | |
277 | in most cases even if ACPI is unusable or blacklisted. | |
278 | ||
c73a668c | 279 | This timing source is not affected by power management features |
1da177e4 LT |
280 | like aggressive processor idling, throttling, frequency and/or |
281 | voltage scaling, unlike the commonly used Time Stamp Counter | |
282 | (TSC) timing source. | |
283 | ||
e78256b8 AK |
284 | You should nearly always say Y here because many modern |
285 | systems require this timer. | |
1da177e4 LT |
286 | |
287 | config ACPI_CONTAINER | |
06991c28 | 288 | bool "Container and Module Devices" |
ea6a4581 | 289 | default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU) |
1c48aa36 BH |
290 | help |
291 | This driver supports ACPI Container and Module devices (IDs | |
292 | ACPI0004, PNP0A05, and PNP0A06). | |
45b1b196 | 293 | |
1c48aa36 BH |
294 | This helps support hotplug of nodes, CPUs, and memory. |
295 | ||
296 | To compile this driver as a module, choose M here: | |
297 | the module will be called container. | |
1da177e4 LT |
298 | |
299 | config ACPI_HOTPLUG_MEMORY | |
0a347644 | 300 | bool "Memory Hotplug" |
bc02af93 | 301 | depends on MEMORY_HOTPLUG |
1da177e4 | 302 | help |
1c48aa36 BH |
303 | This driver supports ACPI memory hotplug. The driver |
304 | fields notifications on ACPI memory devices (PNP0C80), | |
305 | which represent memory ranges that may be onlined or | |
306 | offlined during runtime. | |
1da177e4 | 307 | |
1c48aa36 BH |
308 | If your hardware and firmware do not support adding or |
309 | removing memory devices at runtime, you need not enable | |
310 | this driver. | |
1da177e4 | 311 | |
1c48aa36 BH |
312 | To compile this driver as a module, choose M here: |
313 | the module will be called acpi_memhotplug. | |
3f86b832 RT |
314 | |
315 | config ACPI_SBS | |
94f6c086 | 316 | tristate "Smart Battery System" |
b4150fc4 | 317 | depends on X86 |
1b3d4c3b | 318 | select POWER_SUPPLY |
3f86b832 | 319 | help |
1c48aa36 | 320 | This driver supports the Smart Battery System, another |
94f6c086 | 321 | type of access to battery information, found on some laptops. |
3f86b832 | 322 | |
1c48aa36 BH |
323 | To compile this driver as a module, choose M here: |
324 | the modules will be called sbs and sbshc. | |
325 | ||
801eab81 HY |
326 | config ACPI_HED |
327 | tristate "Hardware Error Device" | |
328 | help | |
329 | This driver supports the Hardware Error Device (PNP0C33), | |
330 | which is used to report some hardware errors notified via | |
331 | SCI, mainly the corrected errors. | |
332 | ||
526b4af4 TR |
333 | config ACPI_CUSTOM_METHOD |
334 | tristate "Allow ACPI methods to be inserted/replaced at run time" | |
335 | depends on DEBUG_FS | |
336 | default n | |
337 | help | |
bd1b2a55 | 338 | This debug facility allows ACPI AML methods to be inserted and/or |
526b4af4 TR |
339 | replaced without rebooting the system. For details refer to: |
340 | Documentation/acpi/method-customizing.txt. | |
341 | ||
342 | NOTE: This option is security sensitive, because it allows arbitrary | |
343 | kernel memory to be written to by root (uid=0) users, allowing them | |
344 | to bypass certain security measures (e.g. if root is not allowed to | |
345 | load additional kernel modules after boot, this feature may be used | |
346 | to override that restriction). | |
347 | ||
d1ff4b1c | 348 | config ACPI_BGRT |
2223af38 | 349 | bool "Boottime Graphics Resource Table support" |
e66cd537 | 350 | depends on EFI && X86 |
d1ff4b1c MG |
351 | help |
352 | This driver adds support for exposing the ACPI Boottime Graphics | |
353 | Resource Table, which allows the operating system to obtain | |
354 | data from the firmware boot splash. It will appear under | |
355 | /sys/firmware/acpi/bgrt/ . | |
356 | ||
af1ae78a AS |
357 | config ACPI_REDUCED_HARDWARE_ONLY |
358 | bool "Hardware-reduced ACPI support only" if EXPERT | |
359 | def_bool n | |
360 | depends on ACPI | |
361 | help | |
362 | This config item changes the way the ACPI code is built. When this | |
363 | option is selected, the kernel will use a specialized version of | |
364 | ACPICA that ONLY supports the ACPI "reduced hardware" mode. The | |
365 | resulting kernel will be smaller but it will also be restricted to | |
366 | running in ACPI reduced hardware mode ONLY. | |
367 | ||
368 | If you are unsure what to do, do not enable this option. | |
369 | ||
a643ce20 HY |
370 | source "drivers/acpi/apei/Kconfig" |
371 | ||
4b3db708 CG |
372 | config ACPI_EXTLOG |
373 | tristate "Extended Error Log support" | |
9ebddac7 | 374 | depends on X86_MCE && X86_LOCAL_APIC |
7ea6c6c1 | 375 | select UEFI_CPER |
4b3db708 CG |
376 | default n |
377 | help | |
378 | Certain usages such as Predictive Failure Analysis (PFA) require | |
379 | more information about the error than what can be described in | |
380 | processor machine check banks. Most server processors log | |
381 | additional information about the error in processor uncore | |
382 | registers. Since the addresses and layout of these registers vary | |
383 | widely from one processor to another, system software cannot | |
384 | readily make use of them. To complicate matters further, some of | |
385 | the additional error information cannot be constructed without | |
386 | detailed knowledge about platform topology. | |
387 | ||
388 | Enhanced MCA Logging allows firmware to provide additional error | |
389 | information to system software, synchronous with MCE or CMCI. This | |
390 | driver adds support for that functionality. | |
391 | ||
1da177e4 | 392 | endif # ACPI |