lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | # |
| 2 | # ACPI Configuration |
| 3 | # |
| 4 | |
| 5 | menuconfig ACPI |
| 6 | bool "ACPI (Advanced Configuration and Power Interface) Support" |
| 7 | depends on !IA64_HP_SIM |
| 8 | depends on IA64 || X86 |
| 9 | depends on PCI |
| 10 | select PNP |
| 11 | default y |
| 12 | help |
| 13 | Advanced Configuration and Power Interface (ACPI) support for |
| 14 | Linux requires an ACPI-compliant platform (hardware/firmware), |
| 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 |
| 24 | are configured, ACPI is used. |
| 25 | |
| 26 | The project home page for the Linux ACPI subsystem is here: |
| 27 | <http://www.lesswatts.org/projects/acpi/> |
| 28 | |
| 29 | Linux support for ACPI is based on Intel Corporation's ACPI |
| 30 | Component Architecture (ACPI CA). For more information on the |
| 31 | ACPI CA, see: |
| 32 | <http://acpica.org/> |
| 33 | |
| 34 | ACPI is an open industry specification co-developed by |
| 35 | Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba. |
| 36 | The specification is available at: |
| 37 | <http://www.acpi.info> |
| 38 | |
| 39 | if ACPI |
| 40 | |
| 41 | config ACPI_SLEEP |
| 42 | bool |
| 43 | depends on SUSPEND || HIBERNATION |
| 44 | default y |
| 45 | |
| 46 | config ACPI_PROCFS |
| 47 | bool "Deprecated /proc/acpi files" |
| 48 | depends on PROC_FS |
| 49 | help |
| 50 | For backwards compatibility, this option allows |
| 51 | deprecated /proc/acpi/ files to exist, even when |
| 52 | they have been replaced by functions in /sys. |
| 53 | |
| 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/ |
| 58 | |
| 59 | config ACPI_PROCFS_POWER |
| 60 | bool "Deprecated power /proc/acpi directories" |
| 61 | depends on PROC_FS |
| 62 | help |
| 63 | For backwards compatibility, this option allows |
| 64 | deprecated power /proc/acpi/ directories to exist, even when |
| 65 | they have been replaced by functions in /sys. |
| 66 | The deprecated directories (and their replacements) include: |
| 67 | /proc/acpi/battery/* (/sys/class/power_supply/*) |
| 68 | /proc/acpi/ac_adapter/* (sys/class/power_supply/*) |
| 69 | This option has no effect on /proc/acpi/ directories |
| 70 | and functions, which do not yet exist in /sys |
| 71 | This option, together with the proc directories, will be |
| 72 | deleted in 2.6.39. |
| 73 | |
| 74 | Say N to delete power /proc/acpi/ directories that have moved to /sys/ |
| 75 | |
| 76 | config ACPI_EC_DEBUGFS |
| 77 | tristate "EC read/write access through /sys/kernel/debug/ec" |
| 78 | default n |
| 79 | help |
| 80 | Say N to disable Embedded Controller /sys/kernel/debug interface |
| 81 | |
| 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 |
| 84 | have to power off your system, and remove the laptop battery for |
| 85 | some seconds. |
| 86 | An Embedded Controller typically is available on laptops and reads |
| 87 | sensor values like battery state and temperature. |
| 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. |
| 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 | |
| 94 | config ACPI_PROC_EVENT |
| 95 | bool "Deprecated /proc/acpi/event support" |
| 96 | depends on PROC_FS |
| 97 | default y |
| 98 | help |
| 99 | A user-space daemon, acpid, typically reads /proc/acpi/event |
| 100 | and handles all ACPI-generated events. |
| 101 | |
| 102 | These events are now delivered to user-space either |
| 103 | via the input layer or as netlink events. |
| 104 | |
| 105 | This build option enables the old code for legacy |
| 106 | user-space implementation. After some time, this will |
| 107 | be moved under CONFIG_ACPI_PROCFS, and then deleted. |
| 108 | |
| 109 | Say Y here to retain the old behaviour. Say N if your |
| 110 | user-space is newer than kernel 2.6.23 (September 2007). |
| 111 | |
| 112 | config ACPI_AC |
| 113 | tristate "AC Adapter" |
| 114 | depends on X86 |
| 115 | select POWER_SUPPLY |
| 116 | default y |
| 117 | help |
| 118 | This driver supports the AC Adapter object, which indicates |
| 119 | whether a system is on AC or not. If you have a system that can |
| 120 | switch between A/C and battery, say Y. |
| 121 | |
| 122 | To compile this driver as a module, choose M here: |
| 123 | the module will be called ac. |
| 124 | |
| 125 | config ACPI_BATTERY |
| 126 | tristate "Battery" |
| 127 | depends on X86 |
| 128 | select POWER_SUPPLY |
| 129 | default y |
| 130 | help |
| 131 | This driver adds support for battery information through |
| 132 | /proc/acpi/battery. If you have a mobile system with a battery, |
| 133 | say Y. |
| 134 | |
| 135 | To compile this driver as a module, choose M here: |
| 136 | the module will be called battery. |
| 137 | |
| 138 | config ACPI_BUTTON |
| 139 | tristate "Button" |
| 140 | depends on INPUT |
| 141 | default y |
| 142 | help |
| 143 | This driver handles events on the power, sleep, and lid buttons. |
| 144 | A daemon reads /proc/acpi/event and perform user-defined actions |
| 145 | such as shutting down the system. This is necessary for |
| 146 | software-controlled poweroff. |
| 147 | |
| 148 | To compile this driver as a module, choose M here: |
| 149 | the module will be called button. |
| 150 | |
| 151 | config ACPI_VIDEO |
| 152 | tristate "Video" |
| 153 | depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL |
| 154 | depends on INPUT |
| 155 | select THERMAL |
| 156 | help |
| 157 | This driver implements the ACPI Extensions For Display Adapters |
| 158 | for integrated graphics devices on motherboard, as specified in |
| 159 | ACPI 2.0 Specification, Appendix B. This supports basic operations |
| 160 | such as defining the video POST device, retrieving EDID information, |
| 161 | and setting up a video output. |
| 162 | |
| 163 | To compile this driver as a module, choose M here: |
| 164 | the module will be called video. |
| 165 | |
| 166 | config ACPI_FAN |
| 167 | tristate "Fan" |
| 168 | select THERMAL |
| 169 | default y |
| 170 | help |
| 171 | This driver supports ACPI fan devices, allowing user-mode |
| 172 | applications to perform basic fan control (on, off, status). |
| 173 | |
| 174 | To compile this driver as a module, choose M here: |
| 175 | the module will be called fan. |
| 176 | |
| 177 | config ACPI_DOCK |
| 178 | bool "Dock" |
| 179 | depends on EXPERIMENTAL |
| 180 | help |
| 181 | This driver supports ACPI-controlled docking stations and removable |
| 182 | drive bays such as the IBM Ultrabay and the Dell Module Bay. |
| 183 | |
| 184 | config ACPI_PROCESSOR |
| 185 | tristate "Processor" |
| 186 | select THERMAL |
| 187 | select CPU_IDLE |
| 188 | default y |
| 189 | help |
| 190 | This driver installs ACPI as the idle handler for Linux and uses |
| 191 | ACPI C2 and C3 processor states to save power on systems that |
| 192 | support it. It is required by several flavors of cpufreq |
| 193 | performance-state drivers. |
| 194 | |
| 195 | To compile this driver as a module, choose M here: |
| 196 | the module will be called processor. |
| 197 | config ACPI_IPMI |
| 198 | tristate "IPMI" |
| 199 | depends on EXPERIMENTAL && IPMI_SI && IPMI_HANDLER |
| 200 | default n |
| 201 | help |
| 202 | This driver enables the ACPI to access the BMC controller. And it |
| 203 | uses the IPMI request/response message to communicate with BMC |
| 204 | controller, which can be found on on the server. |
| 205 | |
| 206 | To compile this driver as a module, choose M here: |
| 207 | the module will be called as acpi_ipmi. |
| 208 | |
| 209 | config ACPI_HOTPLUG_CPU |
| 210 | bool |
| 211 | depends on ACPI_PROCESSOR && HOTPLUG_CPU |
| 212 | select ACPI_CONTAINER |
| 213 | default y |
| 214 | |
| 215 | config ACPI_PROCESSOR_AGGREGATOR |
| 216 | tristate "Processor Aggregator" |
| 217 | depends on ACPI_PROCESSOR |
| 218 | depends on EXPERIMENTAL |
| 219 | depends on X86 |
| 220 | help |
| 221 | ACPI 4.0 defines processor Aggregator, which enables OS to perform |
| 222 | specific processor configuration and control that applies to all |
| 223 | processors in the platform. Currently only logical processor idling |
| 224 | is defined, which is to reduce power consumption. This driver |
| 225 | supports the new device. |
| 226 | |
| 227 | config ACPI_THERMAL |
| 228 | tristate "Thermal Zone" |
| 229 | depends on ACPI_PROCESSOR |
| 230 | select THERMAL |
| 231 | default y |
| 232 | help |
| 233 | This driver supports ACPI thermal zones. Most mobile and |
| 234 | some desktop systems support ACPI thermal zones. It is HIGHLY |
| 235 | recommended that this option be enabled, as your processor(s) |
| 236 | may be damaged without it. |
| 237 | |
| 238 | To compile this driver as a module, choose M here: |
| 239 | the module will be called thermal. |
| 240 | |
| 241 | config ACPI_NUMA |
| 242 | bool "NUMA support" |
| 243 | depends on NUMA |
| 244 | depends on (X86 || IA64) |
| 245 | default y if IA64_GENERIC || IA64_SGI_SN2 |
| 246 | |
| 247 | config ACPI_CUSTOM_DSDT_FILE |
| 248 | string "Custom DSDT Table file to include" |
| 249 | default "" |
| 250 | depends on !STANDALONE |
| 251 | help |
| 252 | This option supports a custom DSDT by linking it into the kernel. |
| 253 | See Documentation/acpi/dsdt-override.txt |
| 254 | |
| 255 | Enter the full path name to the file which includes the AmlCode |
| 256 | declaration. |
| 257 | |
| 258 | If unsure, don't enter a file name. |
| 259 | |
| 260 | config ACPI_CUSTOM_DSDT |
| 261 | bool |
| 262 | default ACPI_CUSTOM_DSDT_FILE != "" |
| 263 | |
| 264 | config ACPI_BLACKLIST_YEAR |
| 265 | int "Disable ACPI for systems before Jan 1st this year" if X86_32 |
| 266 | default 0 |
| 267 | help |
| 268 | Enter a 4-digit year, e.g., 2001, to disable ACPI by default |
| 269 | on platforms with DMI BIOS date before January 1st that year. |
| 270 | "acpi=force" can be used to override this mechanism. |
| 271 | |
| 272 | Enter 0 to disable this mechanism and allow ACPI to |
| 273 | run by default no matter what the year. (default) |
| 274 | |
| 275 | config ACPI_DEBUG |
| 276 | bool "Debug Statements" |
| 277 | default n |
| 278 | help |
| 279 | The ACPI subsystem can produce debug output. Saying Y enables this |
| 280 | output and increases the kernel size by around 50K. |
| 281 | |
| 282 | Use the acpi.debug_layer and acpi.debug_level kernel command-line |
| 283 | parameters documented in Documentation/acpi/debug.txt and |
| 284 | Documentation/kernel-parameters.txt to control the type and |
| 285 | amount of debug output. |
| 286 | |
| 287 | config ACPI_DEBUG_FUNC_TRACE |
| 288 | bool "Additionally enable ACPI function tracing" |
| 289 | default n |
| 290 | depends on ACPI_DEBUG |
| 291 | help |
| 292 | ACPI Debug Statements slow down ACPI processing. Function trace |
| 293 | is about half of the penalty and is rarely useful. |
| 294 | |
| 295 | config ACPI_PCI_SLOT |
| 296 | tristate "PCI slot detection driver" |
| 297 | depends on SYSFS |
| 298 | default n |
| 299 | help |
| 300 | This driver creates entries in /sys/bus/pci/slots/ for all PCI |
| 301 | slots in the system. This can help correlate PCI bus addresses, |
| 302 | i.e., segment/bus/device/function tuples, with physical slots in |
| 303 | the system. If you are unsure, say N. |
| 304 | |
| 305 | To compile this driver as a module, choose M here: |
| 306 | the module will be called pci_slot. |
| 307 | |
| 308 | config X86_PM_TIMER |
| 309 | bool "Power Management Timer Support" if EXPERT |
| 310 | depends on X86 |
| 311 | default y |
| 312 | help |
| 313 | The Power Management Timer is available on all ACPI-capable, |
| 314 | in most cases even if ACPI is unusable or blacklisted. |
| 315 | |
| 316 | This timing source is not affected by power management features |
| 317 | like aggressive processor idling, throttling, frequency and/or |
| 318 | voltage scaling, unlike the commonly used Time Stamp Counter |
| 319 | (TSC) timing source. |
| 320 | |
| 321 | You should nearly always say Y here because many modern |
| 322 | systems require this timer. |
| 323 | |
| 324 | config ACPI_CONTAINER |
| 325 | tristate "Container and Module Devices (EXPERIMENTAL)" |
| 326 | depends on EXPERIMENTAL |
| 327 | default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO) |
| 328 | help |
| 329 | This driver supports ACPI Container and Module devices (IDs |
| 330 | ACPI0004, PNP0A05, and PNP0A06). |
| 331 | |
| 332 | This helps support hotplug of nodes, CPUs, and memory. |
| 333 | |
| 334 | To compile this driver as a module, choose M here: |
| 335 | the module will be called container. |
| 336 | |
| 337 | config ACPI_HOTPLUG_MEMORY |
| 338 | tristate "Memory Hotplug" |
| 339 | depends on MEMORY_HOTPLUG |
| 340 | default n |
| 341 | help |
| 342 | This driver supports ACPI memory hotplug. The driver |
| 343 | fields notifications on ACPI memory devices (PNP0C80), |
| 344 | which represent memory ranges that may be onlined or |
| 345 | offlined during runtime. |
| 346 | |
| 347 | If your hardware and firmware do not support adding or |
| 348 | removing memory devices at runtime, you need not enable |
| 349 | this driver. |
| 350 | |
| 351 | To compile this driver as a module, choose M here: |
| 352 | the module will be called acpi_memhotplug. |
| 353 | |
| 354 | config ACPI_SBS |
| 355 | tristate "Smart Battery System" |
| 356 | depends on X86 |
| 357 | select POWER_SUPPLY |
| 358 | help |
| 359 | This driver supports the Smart Battery System, another |
| 360 | type of access to battery information, found on some laptops. |
| 361 | |
| 362 | To compile this driver as a module, choose M here: |
| 363 | the modules will be called sbs and sbshc. |
| 364 | |
| 365 | config ACPI_HED |
| 366 | tristate "Hardware Error Device" |
| 367 | help |
| 368 | This driver supports the Hardware Error Device (PNP0C33), |
| 369 | which is used to report some hardware errors notified via |
| 370 | SCI, mainly the corrected errors. |
| 371 | |
| 372 | config ACPI_CUSTOM_METHOD |
| 373 | tristate "Allow ACPI methods to be inserted/replaced at run time" |
| 374 | depends on DEBUG_FS |
| 375 | default n |
| 376 | help |
| 377 | This debug facility allows ACPI AML methods to be inserted and/or |
| 378 | replaced without rebooting the system. For details refer to: |
| 379 | Documentation/acpi/method-customizing.txt. |
| 380 | |
| 381 | NOTE: This option is security sensitive, because it allows arbitrary |
| 382 | kernel memory to be written to by root (uid=0) users, allowing them |
| 383 | to bypass certain security measures (e.g. if root is not allowed to |
| 384 | load additional kernel modules after boot, this feature may be used |
| 385 | to override that restriction). |
| 386 | |
| 387 | config ACPI_BGRT |
| 388 | tristate "Boottime Graphics Resource Table support" |
| 389 | default n |
| 390 | help |
| 391 | This driver adds support for exposing the ACPI Boottime Graphics |
| 392 | Resource Table, which allows the operating system to obtain |
| 393 | data from the firmware boot splash. It will appear under |
| 394 | /sys/firmware/acpi/bgrt/ . |
| 395 | |
| 396 | source "drivers/acpi/apei/Kconfig" |
| 397 | |
| 398 | endif # ACPI |