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56 | they have been replaced by functions in /sys.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