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