Commit | Line | Data |
---|---|---|
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 | |
1c48aa36 BH |
34 | ACPI is an open industry specification co-developed by |
35 | Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba. | |
36 | The specification is available at: | |
1da177e4 LT |
37 | <http://www.acpi.info> |
38 | ||
3e11c3ce LB |
39 | if ACPI |
40 | ||
673d5b43 LB |
41 | config ACPI_SLEEP |
42 | bool | |
5d1e072b | 43 | depends on SUSPEND || HIBERNATION |
673d5b43 LB |
44 | default y |
45 | ||
b981c591 | 46 | config ACPI_PROCFS |
fb804714 LB |
47 | bool "Deprecated /proc/acpi files" |
48 | depends on PROC_FS | |
1c48aa36 | 49 | help |
fb804714 | 50 | For backwards compatibility, this option allows |
405bbe9f | 51 | deprecated /proc/acpi/ files to exist, even when |
fb804714 | 52 | they have been replaced by functions in /sys. |
fb804714 | 53 | |
fb804714 LB |
54 | This option has no effect on /proc/acpi/ files |
55 | and functions which do not yet exist in /sys. | |
56 | ||
57 | Say N to delete /proc/acpi/ files that have moved to /sys/ | |
1c48aa36 | 58 | |
1195a098 TR |
59 | config ACPI_EC_DEBUGFS |
60 | tristate "EC read/write access through /sys/kernel/debug/ec" | |
500de3dd | 61 | default n |
1195a098 TR |
62 | help |
63 | Say N to disable Embedded Controller /sys/kernel/debug interface | |
64 | ||
500de3dd TR |
65 | Be aware that using this interface can confuse your Embedded |
66 | Controller in a way that a normal reboot is not enough. You then | |
25cb1bfd | 67 | have to power off your system, and remove the laptop battery for |
500de3dd | 68 | some seconds. |
1195a098 TR |
69 | An Embedded Controller typically is available on laptops and reads |
70 | sensor values like battery state and temperature. | |
500de3dd TR |
71 | The kernel accesses the EC through ACPI parsed code provided by BIOS |
72 | tables. This option allows to access the EC directly without ACPI | |
73 | code being involved. | |
1195a098 TR |
74 | Thus this option is a debug option that helps to write ACPI drivers |
75 | and can be used to identify ACPI code or EC firmware bugs. | |
76 | ||
1da177e4 LT |
77 | config ACPI_AC |
78 | tristate "AC Adapter" | |
5527c8be | 79 | depends on X86 |
1b3d4c3b | 80 | select POWER_SUPPLY |
07fefe4c | 81 | default y |
1da177e4 | 82 | help |
1c48aa36 BH |
83 | This driver supports the AC Adapter object, which indicates |
84 | whether a system is on AC or not. If you have a system that can | |
07fefe4c | 85 | switch between A/C and battery, say Y. |
1da177e4 | 86 | |
1c48aa36 BH |
87 | To compile this driver as a module, choose M here: |
88 | the module will be called ac. | |
89 | ||
1da177e4 LT |
90 | config ACPI_BATTERY |
91 | tristate "Battery" | |
5527c8be | 92 | depends on X86 |
1b3d4c3b | 93 | select POWER_SUPPLY |
07fefe4c | 94 | default y |
1da177e4 LT |
95 | help |
96 | This driver adds support for battery information through | |
97 | /proc/acpi/battery. If you have a mobile system with a battery, | |
98 | say Y. | |
99 | ||
1c48aa36 BH |
100 | To compile this driver as a module, choose M here: |
101 | the module will be called battery. | |
102 | ||
1da177e4 LT |
103 | config ACPI_BUTTON |
104 | tristate "Button" | |
c0968f0e | 105 | depends on INPUT |
07fefe4c | 106 | default y |
1da177e4 | 107 | help |
1c48aa36 | 108 | This driver handles events on the power, sleep, and lid buttons. |
7d13f94c KM |
109 | A daemon reads events from input devices or via netlink and |
110 | performs user-defined actions such as shutting down the system. | |
111 | This is necessary for software-controlled poweroff. | |
1c48aa36 BH |
112 | |
113 | To compile this driver as a module, choose M here: | |
114 | the module will be called button. | |
1da177e4 LT |
115 | |
116 | config ACPI_VIDEO | |
117 | tristate "Video" | |
23b0f015 | 118 | depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL |
03e2bf26 | 119 | depends on INPUT |
63c4ec90 | 120 | select THERMAL |
1da177e4 | 121 | help |
1c48aa36 | 122 | This driver implements the ACPI Extensions For Display Adapters |
1da177e4 | 123 | for integrated graphics devices on motherboard, as specified in |
1c48aa36 BH |
124 | ACPI 2.0 Specification, Appendix B. This supports basic operations |
125 | such as defining the video POST device, retrieving EDID information, | |
126 | and setting up a video output. | |
127 | ||
128 | To compile this driver as a module, choose M here: | |
129 | the module will be called video. | |
1da177e4 LT |
130 | |
131 | config ACPI_FAN | |
132 | tristate "Fan" | |
63c4ec90 | 133 | select THERMAL |
07fefe4c | 134 | default y |
1da177e4 | 135 | help |
1c48aa36 | 136 | This driver supports ACPI fan devices, allowing user-mode |
1da177e4 LT |
137 | applications to perform basic fan control (on, off, status). |
138 | ||
1c48aa36 BH |
139 | To compile this driver as a module, choose M here: |
140 | the module will be called fan. | |
141 | ||
c8f7a62c | 142 | config ACPI_DOCK |
898b054f | 143 | bool "Dock" |
c8f7a62c | 144 | help |
1c48aa36 BH |
145 | This driver supports ACPI-controlled docking stations and removable |
146 | drive bays such as the IBM Ultrabay and the Dell Module Bay. | |
01b57e73 | 147 | |
1da177e4 LT |
148 | config ACPI_PROCESSOR |
149 | tristate "Processor" | |
63c4ec90 | 150 | select THERMAL |
a4084c14 | 151 | select CPU_IDLE |
07fefe4c | 152 | default y |
1da177e4 | 153 | help |
1c48aa36 BH |
154 | This driver installs ACPI as the idle handler for Linux and uses |
155 | ACPI C2 and C3 processor states to save power on systems that | |
07fefe4c | 156 | support it. It is required by several flavors of cpufreq |
1c48aa36 BH |
157 | performance-state drivers. |
158 | ||
159 | To compile this driver as a module, choose M here: | |
160 | the module will be called processor. | |
4b88e330 | 161 | |
e92b297c ZY |
162 | config ACPI_IPMI |
163 | tristate "IPMI" | |
4b88e330 | 164 | depends on IPMI_SI |
e92b297c ZY |
165 | default n |
166 | help | |
167 | This driver enables the ACPI to access the BMC controller. And it | |
168 | uses the IPMI request/response message to communicate with BMC | |
169 | controller, which can be found on on the server. | |
170 | ||
171 | To compile this driver as a module, choose M here: | |
172 | the module will be called as acpi_ipmi. | |
1da177e4 LT |
173 | |
174 | config ACPI_HOTPLUG_CPU | |
cbfc1bae | 175 | bool |
f756f28b | 176 | depends on ACPI_PROCESSOR && HOTPLUG_CPU |
1da177e4 | 177 | select ACPI_CONTAINER |
cbfc1bae | 178 | default y |
1da177e4 | 179 | |
8e0af514 SL |
180 | config ACPI_PROCESSOR_AGGREGATOR |
181 | tristate "Processor Aggregator" | |
182 | depends on ACPI_PROCESSOR | |
d91f79eb | 183 | depends on X86 |
8e0af514 SL |
184 | help |
185 | ACPI 4.0 defines processor Aggregator, which enables OS to perform | |
c4c4e2a5 | 186 | specific processor configuration and control that applies to all |
8e0af514 SL |
187 | processors in the platform. Currently only logical processor idling |
188 | is defined, which is to reduce power consumption. This driver | |
c4c4e2a5 | 189 | supports the new device. |
8e0af514 | 190 | |
1da177e4 LT |
191 | config ACPI_THERMAL |
192 | tristate "Thermal Zone" | |
193 | depends on ACPI_PROCESSOR | |
3f655ef8 | 194 | select THERMAL |
07fefe4c | 195 | default y |
1da177e4 | 196 | help |
1c48aa36 | 197 | This driver supports ACPI thermal zones. Most mobile and |
1da177e4 LT |
198 | some desktop systems support ACPI thermal zones. It is HIGHLY |
199 | recommended that this option be enabled, as your processor(s) | |
200 | may be damaged without it. | |
201 | ||
1c48aa36 BH |
202 | To compile this driver as a module, choose M here: |
203 | the module will be called thermal. | |
204 | ||
1da177e4 LT |
205 | config ACPI_NUMA |
206 | bool "NUMA support" | |
207 | depends on NUMA | |
762834e8 | 208 | depends on (X86 || IA64) |
1da177e4 LT |
209 | default y if IA64_GENERIC || IA64_SGI_SN2 |
210 | ||
7ce9573e RD |
211 | config ACPI_CUSTOM_DSDT_FILE |
212 | string "Custom DSDT Table file to include" | |
213 | default "" | |
1da177e4 | 214 | depends on !STANDALONE |
1da177e4 | 215 | help |
d89e9d6b LB |
216 | This option supports a custom DSDT by linking it into the kernel. |
217 | See Documentation/acpi/dsdt-override.txt | |
218 | ||
c30fe7f7 UZ |
219 | Enter the full path name to the file which includes the AmlCode |
220 | declaration. | |
1da177e4 | 221 | |
7ce9573e RD |
222 | If unsure, don't enter a file name. |
223 | ||
224 | config ACPI_CUSTOM_DSDT | |
225 | bool | |
226 | default ACPI_CUSTOM_DSDT_FILE != "" | |
227 | ||
53aac44c | 228 | config ACPI_INITRD_TABLE_OVERRIDE |
565d956a TR |
229 | bool "ACPI tables override via initrd" |
230 | depends on BLK_DEV_INITRD && X86 | |
53aac44c TR |
231 | default n |
232 | help | |
233 | This option provides functionality to override arbitrary ACPI tables | |
234 | via initrd. No functional change if no ACPI tables are passed via | |
235 | initrd, therefore it's safe to say Y. | |
236 | See Documentation/acpi/initrd_table_override.txt for details | |
237 | ||
1da177e4 LT |
238 | config ACPI_DEBUG |
239 | bool "Debug Statements" | |
1da177e4 LT |
240 | default n |
241 | help | |
a0d84a92 BH |
242 | The ACPI subsystem can produce debug output. Saying Y enables this |
243 | output and increases the kernel size by around 50K. | |
244 | ||
245 | Use the acpi.debug_layer and acpi.debug_level kernel command-line | |
246 | parameters documented in Documentation/acpi/debug.txt and | |
247 | Documentation/kernel-parameters.txt to control the type and | |
248 | amount of debug output. | |
1da177e4 | 249 | |
8344b568 | 250 | config ACPI_PCI_SLOT |
ab1a2e03 | 251 | bool "PCI slot detection driver" |
268a03a4 | 252 | depends on SYSFS |
8344b568 AC |
253 | default n |
254 | help | |
1c48aa36 BH |
255 | This driver creates entries in /sys/bus/pci/slots/ for all PCI |
256 | slots in the system. This can help correlate PCI bus addresses, | |
257 | i.e., segment/bus/device/function tuples, with physical slots in | |
258 | the system. If you are unsure, say N. | |
259 | ||
1da177e4 | 260 | config X86_PM_TIMER |
6a108a14 | 261 | bool "Power Management Timer Support" if EXPERT |
1da177e4 | 262 | depends on X86 |
07fefe4c | 263 | default y |
1da177e4 LT |
264 | help |
265 | The Power Management Timer is available on all ACPI-capable, | |
266 | in most cases even if ACPI is unusable or blacklisted. | |
267 | ||
c73a668c | 268 | This timing source is not affected by power management features |
1da177e4 LT |
269 | like aggressive processor idling, throttling, frequency and/or |
270 | voltage scaling, unlike the commonly used Time Stamp Counter | |
271 | (TSC) timing source. | |
272 | ||
e78256b8 AK |
273 | You should nearly always say Y here because many modern |
274 | systems require this timer. | |
1da177e4 LT |
275 | |
276 | config ACPI_CONTAINER | |
06991c28 | 277 | bool "Container and Module Devices" |
ea6a4581 | 278 | default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU) |
1c48aa36 BH |
279 | help |
280 | This driver supports ACPI Container and Module devices (IDs | |
281 | ACPI0004, PNP0A05, and PNP0A06). | |
45b1b196 | 282 | |
1c48aa36 BH |
283 | This helps support hotplug of nodes, CPUs, and memory. |
284 | ||
285 | To compile this driver as a module, choose M here: | |
286 | the module will be called container. | |
1da177e4 LT |
287 | |
288 | config ACPI_HOTPLUG_MEMORY | |
0a347644 | 289 | bool "Memory Hotplug" |
bc02af93 | 290 | depends on MEMORY_HOTPLUG |
1da177e4 | 291 | help |
1c48aa36 BH |
292 | This driver supports ACPI memory hotplug. The driver |
293 | fields notifications on ACPI memory devices (PNP0C80), | |
294 | which represent memory ranges that may be onlined or | |
295 | offlined during runtime. | |
1da177e4 | 296 | |
1c48aa36 BH |
297 | If your hardware and firmware do not support adding or |
298 | removing memory devices at runtime, you need not enable | |
299 | this driver. | |
1da177e4 | 300 | |
1c48aa36 BH |
301 | To compile this driver as a module, choose M here: |
302 | the module will be called acpi_memhotplug. | |
3f86b832 RT |
303 | |
304 | config ACPI_SBS | |
94f6c086 | 305 | tristate "Smart Battery System" |
b4150fc4 | 306 | depends on X86 |
1b3d4c3b | 307 | select POWER_SUPPLY |
3f86b832 | 308 | help |
1c48aa36 | 309 | This driver supports the Smart Battery System, another |
94f6c086 | 310 | type of access to battery information, found on some laptops. |
3f86b832 | 311 | |
1c48aa36 BH |
312 | To compile this driver as a module, choose M here: |
313 | the modules will be called sbs and sbshc. | |
314 | ||
801eab81 HY |
315 | config ACPI_HED |
316 | tristate "Hardware Error Device" | |
317 | help | |
318 | This driver supports the Hardware Error Device (PNP0C33), | |
319 | which is used to report some hardware errors notified via | |
320 | SCI, mainly the corrected errors. | |
321 | ||
526b4af4 TR |
322 | config ACPI_CUSTOM_METHOD |
323 | tristate "Allow ACPI methods to be inserted/replaced at run time" | |
324 | depends on DEBUG_FS | |
325 | default n | |
326 | help | |
bd1b2a55 | 327 | This debug facility allows ACPI AML methods to be inserted and/or |
526b4af4 TR |
328 | replaced without rebooting the system. For details refer to: |
329 | Documentation/acpi/method-customizing.txt. | |
330 | ||
331 | NOTE: This option is security sensitive, because it allows arbitrary | |
332 | kernel memory to be written to by root (uid=0) users, allowing them | |
333 | to bypass certain security measures (e.g. if root is not allowed to | |
334 | load additional kernel modules after boot, this feature may be used | |
335 | to override that restriction). | |
336 | ||
d1ff4b1c | 337 | config ACPI_BGRT |
2223af38 | 338 | bool "Boottime Graphics Resource Table support" |
e66cd537 | 339 | depends on EFI && X86 |
d1ff4b1c MG |
340 | help |
341 | This driver adds support for exposing the ACPI Boottime Graphics | |
342 | Resource Table, which allows the operating system to obtain | |
343 | data from the firmware boot splash. It will appear under | |
344 | /sys/firmware/acpi/bgrt/ . | |
345 | ||
a643ce20 HY |
346 | source "drivers/acpi/apei/Kconfig" |
347 | ||
4b3db708 CG |
348 | config ACPI_EXTLOG |
349 | tristate "Extended Error Log support" | |
9ebddac7 | 350 | depends on X86_MCE && X86_LOCAL_APIC |
7ea6c6c1 | 351 | select UEFI_CPER |
4b3db708 CG |
352 | default n |
353 | help | |
354 | Certain usages such as Predictive Failure Analysis (PFA) require | |
355 | more information about the error than what can be described in | |
356 | processor machine check banks. Most server processors log | |
357 | additional information about the error in processor uncore | |
358 | registers. Since the addresses and layout of these registers vary | |
359 | widely from one processor to another, system software cannot | |
360 | readily make use of them. To complicate matters further, some of | |
361 | the additional error information cannot be constructed without | |
362 | detailed knowledge about platform topology. | |
363 | ||
364 | Enhanced MCA Logging allows firmware to provide additional error | |
365 | information to system software, synchronous with MCE or CMCI. This | |
366 | driver adds support for that functionality. | |
367 | ||
1da177e4 | 368 | endif # ACPI |