19 lines
775 B
ReStructuredText
19 lines
775 B
ReStructuredText
|
=====================
|
||
|
|
Firmware lookup order
|
||
|
|
=====================
|
||
|
|
|
||
|
|
Different functionality is available to enable firmware to be found.
|
||
|
|
Below is chronological order of how firmware will be looked for once
|
||
|
|
a driver issues a firmware API call.
|
||
|
|
|
||
|
|
* The ''Built-in firmware'' is checked first, if the firmware is present we
|
||
|
|
return it immediately
|
||
|
|
* The ''Firmware cache'' is looked at next. If the firmware is found we
|
||
|
|
return it immediately
|
||
|
|
* The ''Direct filesystem lookup'' is performed next, if found we
|
||
|
|
return it immediately
|
||
|
|
* If no firmware has been found and the fallback mechanism was enabled
|
||
|
|
the sysfs interface is created. After this either a kobject uevent
|
||
|
|
is issued or the custom firmware loading is relied upon for firmware
|
||
|
|
loading up to the timeout value.
|