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| author | Mike Frysinger | 2007-06-28 17:13:51 +0000 |
|---|---|---|
| committer | Mike Frysinger | 2007-06-28 17:13:51 +0000 |
| commit | ae7f7ebcb767714e4d294025e432638329f2948d (patch) | |
| tree | d6cb4b84504a961897c4e2ebd2c12cb40a74b504 /docs/mdev.txt | |
| parent | 12d2129d500ed93a331c5a9863dd56f5dd0235e9 (diff) | |
| download | busybox-ae7f7ebcb767714e4d294025e432638329f2948d.zip busybox-ae7f7ebcb767714e4d294025e432638329f2948d.tar.gz | |
document firmware support
Diffstat (limited to 'docs/mdev.txt')
| -rw-r--r-- | docs/mdev.txt | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/docs/mdev.txt b/docs/mdev.txt index 51c3f0e..0b2c37d 100644 --- a/docs/mdev.txt +++ b/docs/mdev.txt @@ -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. |