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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 BH |
26 | The project home page for the Linux ACPI subsystem is here: |
27 | <http://www.lesswatts.org/projects/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fb804714 | 52 | they have been replaced by functions in /sys.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 | |
fdcedbba | 59 | config ACPI_PROCFS_POWER |
9e527971 | 60 | bool "Deprecated power /proc/acpi directories" |
fdcedbba | 61 | depends on PROC_FS |
1c48aa36 | 62 | help |
fdcedbba | 63 | For backwards compatibility, this option allows |
9e527971 | 64 | deprecated power /proc/acpi/ directories to exist, even when |
fdcedbba | 65 | they have been replaced by functions in /sys. |
9e527971 | 66 | The deprecated directories (and their replacements) include: |
fdcedbba AS |
67 | /proc/acpi/battery/* (/sys/class/power_supply/*) |
68 | /proc/acpi/ac_adapter/* (sys/class/power_supply/*) | |
9e527971 | 69 | This option has no effect on /proc/acpi/ directories |
fdcedbba | 70 | and functions, which do not yet exist in /sys |
6d855fcd ZR |
71 | This option, together with the proc directories, will be |
72 | deleted in 2.6.39. | |
b981c591 | 73 | |
9e527971 AC |
74 | Say N to delete power /proc/acpi/ directories that have moved to /sys/ |
75 | ||
1195a098 TR |
76 | config ACPI_EC_DEBUGFS |
77 | tristate "EC read/write access through /sys/kernel/debug/ec" | |
500de3dd | 78 | default n |
1195a098 TR |
79 | help |
80 | Say N to disable Embedded Controller /sys/kernel/debug interface | |
81 | ||
500de3dd TR |
82 | Be aware that using this interface can confuse your Embedded |
83 | Controller in a way that a normal reboot is not enough. You then | |
25cb1bfd | 84 | have to power off your system, and remove the laptop battery for |
500de3dd | 85 | some seconds. |
1195a098 TR |
86 | An Embedded Controller typically is available on laptops and reads |
87 | sensor values like battery state and temperature. | |
500de3dd TR |
88 | The kernel accesses the EC through ACPI parsed code provided by BIOS |
89 | tables. This option allows to access the EC directly without ACPI | |
90 | code being involved. | |
1195a098 TR |
91 | Thus this option is a debug option that helps to write ACPI drivers |
92 | and can be used to identify ACPI code or EC firmware bugs. | |
93 | ||
1da177e4 LT |
94 | config ACPI_AC |
95 | tristate "AC Adapter" | |
5527c8be | 96 | depends on X86 |
1b3d4c3b | 97 | select POWER_SUPPLY |
07fefe4c | 98 | default y |
1da177e4 | 99 | help |
1c48aa36 BH |
100 | This driver supports the AC Adapter object, which indicates |
101 | whether a system is on AC or not. If you have a system that can | |
07fefe4c | 102 | switch between A/C and battery, say Y. |
1da177e4 | 103 | |
1c48aa36 BH |
104 | To compile this driver as a module, choose M here: |
105 | the module will be called ac. | |
106 | ||
1da177e4 LT |
107 | config ACPI_BATTERY |
108 | tristate "Battery" | |
5527c8be | 109 | depends on X86 |
1b3d4c3b | 110 | select POWER_SUPPLY |
07fefe4c | 111 | default y |
1da177e4 LT |
112 | help |
113 | This driver adds support for battery information through | |
114 | /proc/acpi/battery. If you have a mobile system with a battery, | |
115 | say Y. | |
116 | ||
1c48aa36 BH |
117 | To compile this driver as a module, choose M here: |
118 | the module will be called battery. | |
119 | ||
1da177e4 LT |
120 | config ACPI_BUTTON |
121 | tristate "Button" | |
c0968f0e | 122 | depends on INPUT |
07fefe4c | 123 | default y |
1da177e4 | 124 | help |
1c48aa36 | 125 | This driver handles events on the power, sleep, and lid buttons. |
07fefe4c LB |
126 | A daemon reads /proc/acpi/event and perform user-defined actions |
127 | such as shutting down the system. This is necessary for | |
1c48aa36 BH |
128 | software-controlled poweroff. |
129 | ||
130 | To compile this driver as a module, choose M here: | |
131 | the module will be called button. | |
1da177e4 LT |
132 | |
133 | config ACPI_VIDEO | |
134 | tristate "Video" | |
23b0f015 | 135 | depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL |
03e2bf26 | 136 | depends on INPUT |
63c4ec90 | 137 | select THERMAL |
1da177e4 | 138 | help |
1c48aa36 | 139 | This driver implements the ACPI Extensions For Display Adapters |
1da177e4 | 140 | for integrated graphics devices on motherboard, as specified in |
1c48aa36 BH |
141 | ACPI 2.0 Specification, Appendix B. This supports basic operations |
142 | such as defining the video POST device, retrieving EDID information, | |
143 | and setting up a video output. | |
144 | ||
145 | To compile this driver as a module, choose M here: | |
146 | the module will be called video. | |
1da177e4 LT |
147 | |
148 | config ACPI_FAN | |
149 | tristate "Fan" | |
63c4ec90 | 150 | select THERMAL |
07fefe4c | 151 | default y |
1da177e4 | 152 | help |
1c48aa36 | 153 | This driver supports ACPI fan devices, allowing user-mode |
1da177e4 LT |
154 | applications to perform basic fan control (on, off, status). |
155 | ||
1c48aa36 BH |
156 | To compile this driver as a module, choose M here: |
157 | the module will be called fan. | |
158 | ||
c8f7a62c | 159 | config ACPI_DOCK |
898b054f | 160 | bool "Dock" |
c8f7a62c | 161 | help |
1c48aa36 BH |
162 | This driver supports ACPI-controlled docking stations and removable |
163 | drive bays such as the IBM Ultrabay and the Dell Module Bay. | |
01b57e73 | 164 | |
1da177e4 LT |
165 | config ACPI_PROCESSOR |
166 | tristate "Processor" | |
63c4ec90 | 167 | select THERMAL |
a4084c14 | 168 | select CPU_IDLE |
07fefe4c | 169 | default y |
1da177e4 | 170 | help |
1c48aa36 BH |
171 | This driver installs ACPI as the idle handler for Linux and uses |
172 | ACPI C2 and C3 processor states to save power on systems that | |
07fefe4c | 173 | support it. It is required by several flavors of cpufreq |
1c48aa36 BH |
174 | performance-state drivers. |
175 | ||
176 | To compile this driver as a module, choose M here: | |
177 | the module will be called processor. | |
e92b297c ZY |
178 | config ACPI_IPMI |
179 | tristate "IPMI" | |
f756f28b | 180 | depends on IPMI_SI && IPMI_HANDLER |
e92b297c ZY |
181 | default n |
182 | help | |
183 | This driver enables the ACPI to access the BMC controller. And it | |
184 | uses the IPMI request/response message to communicate with BMC | |
185 | controller, which can be found on on the server. | |
186 | ||
187 | To compile this driver as a module, choose M here: | |
188 | the module will be called as acpi_ipmi. | |
1da177e4 LT |
189 | |
190 | config ACPI_HOTPLUG_CPU | |
cbfc1bae | 191 | bool |
f756f28b | 192 | depends on ACPI_PROCESSOR && HOTPLUG_CPU |
1da177e4 | 193 | select ACPI_CONTAINER |
cbfc1bae | 194 | default y |
1da177e4 | 195 | |
8e0af514 SL |
196 | config ACPI_PROCESSOR_AGGREGATOR |
197 | tristate "Processor Aggregator" | |
198 | depends on ACPI_PROCESSOR | |
d91f79eb | 199 | depends on X86 |
8e0af514 SL |
200 | help |
201 | ACPI 4.0 defines processor Aggregator, which enables OS to perform | |
c4c4e2a5 | 202 | specific processor configuration and control that applies to all |
8e0af514 SL |
203 | processors in the platform. Currently only logical processor idling |
204 | is defined, which is to reduce power consumption. This driver | |
c4c4e2a5 | 205 | supports the new device. |
8e0af514 | 206 | |
1da177e4 LT |
207 | config ACPI_THERMAL |
208 | tristate "Thermal Zone" | |
209 | depends on ACPI_PROCESSOR | |
3f655ef8 | 210 | select THERMAL |
07fefe4c | 211 | default y |
1da177e4 | 212 | help |
1c48aa36 | 213 | This driver supports ACPI thermal zones. Most mobile and |
1da177e4 LT |
214 | some desktop systems support ACPI thermal zones. It is HIGHLY |
215 | recommended that this option be enabled, as your processor(s) | |
216 | may be damaged without it. | |
217 | ||
1c48aa36 BH |
218 | To compile this driver as a module, choose M here: |
219 | the module will be called thermal. | |
220 | ||
1da177e4 LT |
221 | config ACPI_NUMA |
222 | bool "NUMA support" | |
223 | depends on NUMA | |
762834e8 | 224 | depends on (X86 || IA64) |
1da177e4 LT |
225 | default y if IA64_GENERIC || IA64_SGI_SN2 |
226 | ||
7ce9573e RD |
227 | config ACPI_CUSTOM_DSDT_FILE |
228 | string "Custom DSDT Table file to include" | |
229 | default "" | |
1da177e4 | 230 | depends on !STANDALONE |
1da177e4 | 231 | help |
d89e9d6b LB |
232 | This option supports a custom DSDT by linking it into the kernel. |
233 | See Documentation/acpi/dsdt-override.txt | |
234 | ||
c30fe7f7 UZ |
235 | Enter the full path name to the file which includes the AmlCode |
236 | declaration. | |
1da177e4 | 237 | |
7ce9573e RD |
238 | If unsure, don't enter a file name. |
239 | ||
240 | config ACPI_CUSTOM_DSDT | |
241 | bool | |
242 | default ACPI_CUSTOM_DSDT_FILE != "" | |
243 | ||
53aac44c | 244 | config ACPI_INITRD_TABLE_OVERRIDE |
565d956a TR |
245 | bool "ACPI tables override via initrd" |
246 | depends on BLK_DEV_INITRD && X86 | |
53aac44c TR |
247 | default n |
248 | help | |
249 | This option provides functionality to override arbitrary ACPI tables | |
250 | via initrd. No functional change if no ACPI tables are passed via | |
251 | initrd, therefore it's safe to say Y. | |
252 | See Documentation/acpi/initrd_table_override.txt for details | |
253 | ||
1da177e4 | 254 | config ACPI_BLACKLIST_YEAR |
2eb1bdba | 255 | int "Disable ACPI for systems before Jan 1st this year" if X86_32 |
1da177e4 LT |
256 | default 0 |
257 | help | |
1c48aa36 | 258 | Enter a 4-digit year, e.g., 2001, to disable ACPI by default |
1da177e4 LT |
259 | on platforms with DMI BIOS date before January 1st that year. |
260 | "acpi=force" can be used to override this mechanism. | |
261 | ||
262 | Enter 0 to disable this mechanism and allow ACPI to | |
263 | run by default no matter what the year. (default) | |
264 | ||
265 | config ACPI_DEBUG | |
266 | bool "Debug Statements" | |
1da177e4 LT |
267 | default n |
268 | help | |
a0d84a92 BH |
269 | The ACPI subsystem can produce debug output. Saying Y enables this |
270 | output and increases the kernel size by around 50K. | |
271 | ||
272 | Use the acpi.debug_layer and acpi.debug_level kernel command-line | |
273 | parameters documented in Documentation/acpi/debug.txt and | |
274 | Documentation/kernel-parameters.txt to control the type and | |
275 | amount of debug output. | |
1da177e4 | 276 | |
8344b568 | 277 | config ACPI_PCI_SLOT |
ab1a2e03 | 278 | bool "PCI slot detection driver" |
268a03a4 | 279 | depends on SYSFS |
8344b568 AC |
280 | default n |
281 | help | |
1c48aa36 BH |
282 | This driver creates entries in /sys/bus/pci/slots/ for all PCI |
283 | slots in the system. This can help correlate PCI bus addresses, | |
284 | i.e., segment/bus/device/function tuples, with physical slots in | |
285 | the system. If you are unsure, say N. | |
286 | ||
1da177e4 | 287 | config X86_PM_TIMER |
6a108a14 | 288 | bool "Power Management Timer Support" if EXPERT |
1da177e4 | 289 | depends on X86 |
07fefe4c | 290 | default y |
1da177e4 LT |
291 | help |
292 | The Power Management Timer is available on all ACPI-capable, | |
293 | in most cases even if ACPI is unusable or blacklisted. | |
294 | ||
c73a668c | 295 | This timing source is not affected by power management features |
1da177e4 LT |
296 | like aggressive processor idling, throttling, frequency and/or |
297 | voltage scaling, unlike the commonly used Time Stamp Counter | |
298 | (TSC) timing source. | |
299 | ||
e78256b8 AK |
300 | You should nearly always say Y here because many modern |
301 | systems require this timer. | |
1da177e4 LT |
302 | |
303 | config ACPI_CONTAINER | |
06991c28 | 304 | bool "Container and Module Devices" |
ea6a4581 | 305 | default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU) |
1c48aa36 BH |
306 | help |
307 | This driver supports ACPI Container and Module devices (IDs | |
308 | ACPI0004, PNP0A05, and PNP0A06). | |
45b1b196 | 309 | |
1c48aa36 BH |
310 | This helps support hotplug of nodes, CPUs, and memory. |
311 | ||
312 | To compile this driver as a module, choose M here: | |
313 | the module will be called container. | |
1da177e4 LT |
314 | |
315 | config ACPI_HOTPLUG_MEMORY | |
0a347644 | 316 | bool "Memory Hotplug" |
bc02af93 | 317 | depends on MEMORY_HOTPLUG |
1da177e4 | 318 | help |
1c48aa36 BH |
319 | This driver supports ACPI memory hotplug. The driver |
320 | fields notifications on ACPI memory devices (PNP0C80), | |
321 | which represent memory ranges that may be onlined or | |
322 | offlined during runtime. | |
1da177e4 | 323 | |
1c48aa36 BH |
324 | If your hardware and firmware do not support adding or |
325 | removing memory devices at runtime, you need not enable | |
326 | this driver. | |
1da177e4 | 327 | |
1c48aa36 BH |
328 | To compile this driver as a module, choose M here: |
329 | the module will be called acpi_memhotplug. | |
3f86b832 RT |
330 | |
331 | config ACPI_SBS | |
94f6c086 | 332 | tristate "Smart Battery System" |
b4150fc4 | 333 | depends on X86 |
1b3d4c3b | 334 | select POWER_SUPPLY |
3f86b832 | 335 | help |
1c48aa36 | 336 | This driver supports the Smart Battery System, another |
94f6c086 | 337 | type of access to battery information, found on some laptops. |
3f86b832 | 338 | |
1c48aa36 BH |
339 | To compile this driver as a module, choose M here: |
340 | the modules will be called sbs and sbshc. | |
341 | ||
801eab81 HY |
342 | config ACPI_HED |
343 | tristate "Hardware Error Device" | |
344 | help | |
345 | This driver supports the Hardware Error Device (PNP0C33), | |
346 | which is used to report some hardware errors notified via | |
347 | SCI, mainly the corrected errors. | |
348 | ||
526b4af4 TR |
349 | config ACPI_CUSTOM_METHOD |
350 | tristate "Allow ACPI methods to be inserted/replaced at run time" | |
351 | depends on DEBUG_FS | |
352 | default n | |
353 | help | |
bd1b2a55 | 354 | This debug facility allows ACPI AML methods to be inserted and/or |
526b4af4 TR |
355 | replaced without rebooting the system. For details refer to: |
356 | Documentation/acpi/method-customizing.txt. | |
357 | ||
358 | NOTE: This option is security sensitive, because it allows arbitrary | |
359 | kernel memory to be written to by root (uid=0) users, allowing them | |
360 | to bypass certain security measures (e.g. if root is not allowed to | |
361 | load additional kernel modules after boot, this feature may be used | |
362 | to override that restriction). | |
363 | ||
d1ff4b1c | 364 | config ACPI_BGRT |
2223af38 | 365 | bool "Boottime Graphics Resource Table support" |
e66cd537 | 366 | depends on EFI && X86 |
d1ff4b1c MG |
367 | help |
368 | This driver adds support for exposing the ACPI Boottime Graphics | |
369 | Resource Table, which allows the operating system to obtain | |
370 | data from the firmware boot splash. It will appear under | |
371 | /sys/firmware/acpi/bgrt/ . | |
372 | ||
a643ce20 HY |
373 | source "drivers/acpi/apei/Kconfig" |
374 | ||
1da177e4 | 375 | endif # ACPI |