ae7f7ebcb
Mike Frysinger
2007-06-28
Subject
document firmware support
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docs/mdev.txt+12 -0
| @@ -66,3 +66,15 @@ command to the shell), so make sure you have a shell installed at /bin/sh. | |
| For your convenience, the shell env var $MDEV is set to the device name. So if | |
| the device 'hdc' was matched, MDEV would be set to "hdc". | |
| + | |
| + | ---------- |
| + | FIRMWARE |
| + | ---------- |
| + | |
| + | Some kernel device drivers need to request firmware at runtime in order to |
| + | properly initialize a device. Place all such firmware files into the |
| + | /lib/firmware/ directory. At runtime, the kernel will invoke mdev with the |
| + | filename of the firmware which mdev will load out of /lib/firmware/ and into |
| + | the kernel via the sysfs interface. The exact filename is hardcoded in the |
| + | kernel, so look there if you need to want to know what to name the file in |
| + | userspace. |