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.\" $DragonFly: src/share/man/man9/firmware.9,v 1.2 2008/01/10 12:45:10 sephe Exp $
.\"
.Dd January 10, 2008
.Dt FIRMWARE 9
.Os
.Sh NAME
.Nm firmware_image_load ,
.Nm firmware_image_unload
.Nd firmware support
.Sh SYNOPSIS
.In sys/firmware.h
.Ft struct fw_image *
.Fn firmware_image_load "const char *image_name" "bus_dma_tag_t parent_tag"
.Ft void
.Fn firmware_image_unload "struct fw_image *img"
.Sh DESCRIPTION
The
.Nm firmware
interface provides functions for loading and unloading of firmware images.
.Pp
The
.Fn firmware_image_load
function loads the firmware
.Fa image_name
into the kernel and returns a pointer to a
.Vt struct fw_image.
If
.Fa parent_tag
is not NULL,
firmware will be loaded into contiguous physical memory
according to it.
The
.Fn firmware_image_unload
function unloads the image associated with
.Fa img
(obtained with a previous call to
.Fn firmware_image_load ) .
.Pp
Images have to reside in
.Pa /etc/firmware
in order for these functions to work.
This requires the root partition being mounted.
.Sh HISTORY
The
.Nm firmware
framework first appeared in
.Dx 1.1 .
.Sh AUTHORS
.An Johannes Hofmann
.An Joerg Sonnenberger